EP2925655B1 - Device for catching a cabin in a lift assembly - Google Patents
Device for catching a cabin in a lift assembly Download PDFInfo
- Publication number
- EP2925655B1 EP2925655B1 EP13798965.3A EP13798965A EP2925655B1 EP 2925655 B1 EP2925655 B1 EP 2925655B1 EP 13798965 A EP13798965 A EP 13798965A EP 2925655 B1 EP2925655 B1 EP 2925655B1
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- European Patent Office
- Prior art keywords
- brake
- braking
- rail
- guide rail
- control plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000009434 installation Methods 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 11
- 230000003993 interaction Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/20—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of rotatable eccentrically-mounted members
Definitions
- the invention relates to a safety gear and a method for on-demand braking and holding a driving body of an elevator installation by means of the safety gear according to the preamble of the independent claims and an elevator installation with such a safety gear.
- Elevator systems are installed in buildings and usually consist inter alia of an elevator car, which is held with a support device.
- the elevator car By means of a drive, the elevator car is in an upward direction, that is, substantially opposite to the action of gravity or in a downward direction, that is, substantially in the direction of the action of gravity, movable to transport people and / or goods.
- the movement of the elevator car also called a running body, takes place essentially in the vertical direction.
- Such known elevator systems often include safety gears in order to secure them in the event of failure of the drive or the support device or to protect against unwanted drifting or crashes.
- a safety device which comprises an eccentrically formed brake body.
- the brake body is arranged in a housing.
- the housing is moved with the brake body so that the brake body bears against a brake rail and is pivoted by the relative movement between the brake body and the brake rail.
- braking regions of the brake body are positioned on the brake rail, so that the driving body is decelerated.
- a counter-brake plate is arranged in the housing for adjusting the braking force.
- WO 2012/080104 A1 discloses a safety gear with a pivoting driving body for the operation of the safety gear in contact with a brake rail by the relative movement between the driving body and the brake rail.
- a device and a method of the type mentioned in the introduction should be provided, with which braking and holding of the driving body of an elevator installation can reliably take place.
- the safety gear should be structurally simple.
- the safety gear for an elevator installation with at least one drive body which is arranged so as to be movable along a guide rail and / or a brake rail in an elevator shaft, is suitable for demand-based braking and holding of the drive body on the guide rail and / or on a brake rail.
- the safety gear comprises a carrier for receiving a brake body and a control or base plate for positioning the brake body relative to the guide rail and / or the brake rail.
- the brake body is formed at least in two pieces and comprises a first brake element and a second brake element. The two brake elements are substantially independently movable.
- the first brake element is designed substantially only for braking and holding in process of the driving body along the guide rail and / or brake rail in an upward direction.
- the second brake element is designed substantially only for braking and holding in process of the driving body along the guide rail and / or the brake rail in a downward direction.
- the control plate may also be referred to as a base plate, since it is designed to hold the brake elements in a basic position. These terms are synonymous in this context.
- the two brake elements can be brought into contact with the guide rail and / or the brake rail, or delivered to this.
- the direction of travel of the driving body is inevitably, due to a frictional engagement between the brake body and guide rail and / or the brake rail, taken along the corresponding brake element and placed in a final or second braking position.
- the brake body is easily adaptable to the respective requirements for braking force for the upward direction and / or downward direction, which makes the operation of the device reliable and also less expensive. It is for example possible, with appropriate wear of a brake element to replace only this, if the wear of the brake elements of the brake body is different for the different directions.
- the operation of the safety gear is possibly cheaper than prior art safety gears.
- a footprint of the safety gear can be optimized because the required brake element can be moved independently of the other brake element.
- the device comprises a counter-brake body, which is arranged such that the guide rail and / or the brake rail between the brake body and the counter-brake body can be clamped to produce a braking effect.
- the braking force can be adjusted inter alia by the force applied by the counter-brake body on the guide notes and / or brake rail force.
- the counter-brake body can be configured with disc springs, with which the acting braking force is adjustable.
- the control plate is positionable in a rest position and a braking position.
- the positioning can be done in particular by means of a linear movement and / or a pivoting movement of the control plate.
- the control plate can be positioned from the rest position to the braking position by means of a linear movement, a pivoting movement or a combination of linear movement and pivotal movement.
- the positioning of the control plate from the Braking position back into the rest position can also be carried out by linear movement, pivoting movement or a combination of linear movement and pivoting movement.
- the control plate by means of a particular turn-off electromagnet in the rest position preserved.
- a particular turn-off electromagnet in the rest position preserved.
- the electromagnet is switched off, as a result of which a braking effect of the safety gear is triggered, which makes it possible to operate the safety gear as an emergency brake.
- emergency power supplies such as a battery or a capacitor may be provided to bridge short-term power interruptions. Such emergency power supplies are of course included in a safety or control concept of the elevator system.
- control plate is movable by means of a compression spring in the braking position.
- the positioning can also be effected by means of a hydraulic, pneumatic or electric drive, as these are known in the art.
- a tension spring is conceivable.
- the first brake element and / or the second brake element are pivotable.
- the first brake element and / or the second brake element are pivotable about a common axis, preferably arranged in or on the carrier, in particular in opposite directions.
- This has the advantage that the positioning of the control plate and a corresponding pivoting of the brake elements, these can be brought into contact with the guide rail and / or brake rail.
- This is structurally simple, reliable and inexpensive to implement, since no complex facilities for positioning the safety gear are needed.
- the necessary for actuating the brake elements initial forces are low, since in each case only the individual brake elements are pivoted.
- the first brake element and / or the second brake element are pivotable from a basic position to a first brake position such that the first brake element and / or the second brake element is in contact with the guide rail and / or the brake rail.
- substantially no braking and holding takes place when the first brake element and / or the second brake element is in the first braking position in contact with the guide rail and / or the brake rail.
- the first brake element and / or the second brake element by friction with the guide rail and / or the brake rail from the first braking position in a second braking position can be pivoted.
- a release of the safety gear can take place by pivoting back of the first brake element and / or the second brake element by frictional engagement with the guide rail and / or the brake rail from the second braking position to the first braking position.
- This corresponds in particular to an opposite relative movement relative to the relative movement during pivoting of the corresponding brake element from the first braking position to the second braking position.
- This has the advantage that the release of the safety gear by pivoting the corresponding brake element from the second braking position to the first braking position can be structurally simple and reliable, since, for example, no additional return device is necessary. From the first braking position, the corresponding brake element can be brought into the home position by a corresponding pivoting back.
- control plate is movable from the braking position to the rest position by pivoting the first braking element and / or the second braking element from the first braking position to the second braking position.
- the control plate is moved back from the braking position to the rest position.
- the first and / or the second brake element by the positioning of the control plate from its rest position to the braking position, in the first braking position to be moved.
- the control plate is moved back from its braking position to the rest position.
- the control plate can be held again, for example by means of the locking device.
- the locking device may be formed, for example, as a disconnectable solenoid.
- the solenoid holds the control plate in the rest position.
- the solenoid is turned off and the control plate is moved to the braking position, wherein it moves the brake elements in the first braking position.
- the corresponding braking element is moved to the second braking position, whereby the guide or brake rail clamped and the vehicle body is braked.
- the control plate can be moved back to the electromagnet. This is particularly advantageous, since now only the electromagnet can be switched on to hold the control plate in the rest position. He needs no further return energy, which further simplifies the structural design of the safety gear and makes this cheaper.
- the first brake element and / or the second brake element is designed as an eccentric disc. This advantageously allows a compact and simple construction of the safety gear.
- an eccentric disc is understood to mean a disc having an arbitrary outer contour, which is mounted pivotably about an axis outside the geometric center point.
- a correspondingly mounted cam may be an eccentric disc in the sense of the present application.
- the eccentric disk is curved in sections on the side facing the guide rail and / or the brake rail.
- the portion which is in contact with the guide rail and / or the brake rail in the first braking position is curved.
- the radius of the eccentric disc is increasingly based on the direction of the pivoting from the first to the second braking position. This has the advantage that due to the frictional engagement between the eccentric disc in the curved area and the guide rail and / or brake rail, the eccentric disc is reliably pivotable in the second braking position to achieve the desired braking effect.
- the portion is flat, which is in the second braking position with the guide rail and / or the brake rail in contact.
- the eccentric disc has a first curved portion and a second planar portion. Over the region of the first curved portion, the safety gear can be tensioned and on reaching the second, flat portion of the largest possible contact surface for braking is available. At the same time further rotation of the eccentric disc can be stopped by the flat surface.
- a continuously curved eccentric disc can be used.
- the braking position may be defined by a stop which prevents further rotation of the eccentric disc. This alternative may be advantageous for small loads or at low speeds because a braking load corresponding to the small load or a small braking distance is small.
- the eccentric disc on the guide rail and / or the brake rail side facing away configured such that by pivoting, in particular from the first braking position to the second braking position, the eccentric a restoring force on the control plate is exercised for moving the control plate in the rest position.
- control plate on such a contact surface, that when moving the control plate in the braking position, the eccentric disc is pivotable in the first braking position and the restoring force on the control plate during pivoting of the eccentric disc in the second braking position can be exercised.
- This embodiment of eccentric disc and control plate has the advantage that the provision of the control plate in the rest position during pivoting of the eccentric disc in the second braking position by mechanical interactions between the eccentric disc and the control plate can be achieved.
- the outer surface of the eccentric disc in the second braking position starting from the pivot axis on the side facing the guide rail and / or brake rail side have a greater distance than on the side facing away from the guide rail and / or brake rail.
- the opposite side of the eccentric presses on the control plate.
- the wedge-shaped surface of the control plate is designed for each brake element so that a desired pivoting can take place in the first braking position of the first and second brake element.
- the wedge-shaped surface for the first brake element may be arranged in a first direction and for the second brake element in a second direction, which is substantially opposite to the first direction.
- the safety device preferably has a first brake surface of the first brake element smaller than a second brake surface of the second brake element.
- the braking surface of the first braking element is at most 75% and more particularly at most 60% of the second braking surface.
- the first brake element has a first brake surface corresponding to approximately 50% of the second brake surface of the second brake element.
- the braking surface of the brake elements is formed by the flat portion of the eccentric discs.
- the braking surface is determined by the thickness of the brake elements and in particular the eccentric discs.
- the thickness of the first brake element may amount to 50% of the thickness of the second brake element, as a result of which the first brake surface is 50% of the second brake surface.
- the second brake element comprises two brake parts with in particular substantially the same braking surface, wherein the first brake element has a first braking surface substantially equal to one of the brake parts of the second brake element.
- This has the advantage that, for example, identical brake parts can be used for braking in the upward and downward direction and that in each case only the number of brake parts for the corresponding direction is to be selected. This simplifies the handling and also the storage is simplified because the same brake parts are used, which is more cost-effective.
- the brake parts may be formed as eccentric discs or other brake discs.
- the first brake element is arranged between the two brake parts of the second brake element.
- At least one sensor for position monitoring and / or condition monitoring of at least the first brake element, the second brake element or the control plate or any combinations thereof is preferably arranged on and / or in the safety gear. This has the advantage that, for example, a wear or an occurrence of malfunctions can be seen at the outset, which makes the operation even more reliable.
- the "condition monitoring” serves inter alia to monitor the wear of the brake elements, the braking forces occurring as well as the speed of the pivoting of the brake elements or any combination thereof.
- the first brake element and / or the second brake element are biased in the direction of the control plate.
- the bias takes place by means of at least one spring.
- the spring may be designed as a tension spring, which biases the first brake element and / or the second brake element in the direction of the basic position. Instead of the tension spring also spiral springs or magnetic retraction system are possible.
- Another aspect relates to an elevator installation comprising a safety gear as described above.
- An additional aspect relates to a method for demand-based braking and holding a driving body of a lift system by means of a safety gear.
- a safety device is preferably used as described above.
- the safety gear has a control plate for positioning the brake body relative to the guide rail and / or the brake rail.
- the brake body comprises a first brake element and a second brake element.
- the first brake element is designed substantially only for braking during movement of the driving body along the guide rail in an upward direction.
- the second brake element is designed substantially only for braking during movement of the driving body along the guide rail in a second, the upward direction opposite downward direction.
- the method comprises the step of braking and / or holding the drive body by positioning the first and / or second brake element on the guide rail and / or the brake rail.
- the first brake element and the second brake element is preferably delivered by means of the control plate to the guide rail or to the brake rail and brought into a first braking position.
- the first brake element regardless of the second brake element, from the first braking position brought into a second braking position.
- the traveling body is moved along the guide rail in a downward direction, the second brake element, independently of the first brake element, is brought from the first brake position to the second brake position.
- such a safety gear is used for upgrading and / or retrofitting an elevator installation. This includes the step of installing a safety gear as described above and / or in the elevator installation for the production of an elevator installation as described above.
- FIG. 1 is a schematic representation of an elevator system 2 with a drive body 3 comprising a safety gear according to the invention 1 for demand-based braking and holding the carriage body 3 shown.
- the elevator installation 2 comprises a lift shaft 5, in which a guide rail 4 is arranged, along which the drive body 3 is movable in an upward direction a or a downward direction b.
- the driving body 3 is suspended in the elevator shaft 5 by means of a carrying device 16 formed from cables.
- a drive 15 which is operatively connected by the support means 16 with the drive body 3, a movement of the driving body 3 in the upward direction a and / or the downward direction b is possible.
- the drive body 3 in many cases an elevator car, is fully supported by the drive 15.
- there is another carriage in the elevator shaft which is opposite moved to the color body 3 and which is attached according to the opposite end of the support means 16.
- the mounted on the drive body 3 safety gear 1 is designed so that when needed such as a failure of the support means 16 or in case of power failure, the vehicle body can be braked and held. For this purpose, a braking effect is achieved by the safety gear 1 in interaction with the guide rail 4. If appropriate, the guide rail 4 can also be designed as a brake rail.
- an additional brake rail to the guide rail is conceivable, for example, to decelerate the drive body 3 only in certain sections in the elevator shaft 5 by means of the safety gear 1.
- a sensor 12 for position monitoring and / or condition monitoring of the safety gear 1 is arranged.
- the braking effect of the safety gear 1 can be compared, for example, with a desired value, whereby a condition monitoring of the safety gear can be achieved.
- the sensor 12 can of course also be arranged elsewhere on the drive body.
- the sensor 12 may also be merely a switching element which monitors a working position of the safety gear and, for example, stops the elevator system when the safety gear is actuated.
- the safety gear 1 has a carrier 22.
- the carrier 22 forms a housing-like, load-bearing structure for receiving clamping forces of the safety gear.
- An axle 9 is fixedly arranged in the carrier 22.
- the safety gear 1 includes a two-story brake body, comprising a first brake element 7 and a second Brake element 8.
- the two brake elements are designed as eccentric discs and arranged pivotably on the common axis 9.
- a control plate 6 is slidably disposed between a rest position r and a braking position e, in or on the carrier 22.
- the control plate 6 has a surface 19 as an outer contact surface.
- the surface 19 is in an interaction with the brake elements 7, 8.
- an electromagnet 17 and compression springs 18 are further arranged.
- the electromagnet 17 holds the control plate 6, against a force of the compression springs 18, in the rest position r. Next pulls a spring 23, the second brake element 8 elastically against the control plate 6, or against the surface 19 of the control plate 6.
- the second brake element 8 is thus in the basic position g.
- the first brake element 7 is likewise held in the basic position g by a spring (not shown).
- a counter-brake body 13 is arranged on or in the carrier 22.
- the counter-brake body 13 is supported by means of disc springs 14 in the carrier 22 and pressed against the guide rail 4, so that a braking action by the safety gear 1 can be achieved.
- a contact force of the brake body 13 to the guide rail 4 is adjustable for example by selecting the bias of the disc springs.
- the first brake element 7 has a first braking surface 10 and is in the basic position g.
- the second brake element 8 has a second braking surface 11 and is also located in the basic position g.
- the braking surface 11 is larger than the braking surface 10, but in the Figures 2-6 is not visible.
- the arrow marked b denotes the relative movement between the drive body on which the safety gear 1 is arranged and the guide rail 4.
- the drive body is moved in the downward direction b, which in the Figures 2-6 is shown as movement of the guide rail 4. So it has been chosen relative to the safety gear 1 fixed coordinate system.
- the control plate 6 is located in Fig. 2 in the rest position r and is held by means of the turn-off electromagnet 17 in the rest position r.
- the compression springs 18 are arranged on the control plate 6, by means of which after switching off the Electromagnet 17, the control plate 6 is movable to a braking position s.
- the brake elements 7, 8 and also the counter-brake body 13 have a gap to the guide rail 4, so that the drive body is freely movable along the guide rails.
- FIG. 3 the safety gear 1 is shown in a first operating state, in which the electromagnet 17 is turned off and the control plate 6 was brought by means of the compression springs 18 in the braking position e. Due to the interaction of the wedge-shaped surface portions of the surface 19 of the control plate 6 and a rear-side shape of the first brake element 7 and the second brake element 8, the two brake elements 7, 8 pivoted counter to the axis 9. As a result, a respective curved region of the brake elements 7, 8 designed as eccentric disks is brought into contact with the guide rail 4. The two brake elements 7, 8 are now in a first braking position s. They are pressed against the guide rails with a contact pressure determined by the compression springs 18.
- FIG. 5 the pivoting of the second braking element is completed in a second braking position z, whereby the second braking surface 11 has been brought into contact with the guide rail 4.
- the brake element 8 has, during tensioning in the second braking position z, pulled the carrier 22 together with the counter brake lining 13 to the guide rail and tensioned the plate springs 14, so that a desired braking force could be built up.
- the brake elements 7, 8 are preferably provided by means of end stops to the carrier 22, so that further rotation of the brake elements 7, 8 is prevented upon reaching the second braking position z.
- the control plate 6 has been moved to the rest position r and is again in contact with the electromagnet 17.
- the compression springs 18 are again pre-tensioned.
- the electromagnet 17 is arranged to be yielding substantially parallel to the action of the restoring force u, so that an overpressure is made possible in order to ensure contact between the control plate 6 and the electromagnet 17 during the return.
- the second brake element 8 is pivoted back to the basic position g, which is achieved by the spring 23.
- the safety gear is back to its original position, according to the FIG. 2 , deferred.
- FIG. 8 is a section of the safety gear 1 shown in a sectional view through the axis.
- the axis 9 is designed as part of the carrier 22.
- the first brake element 7 and the second brake element 8 are arranged.
- the two brake elements 7, 8 are multi-level, held by means of a mounting plate 21 on the axis 9.
- the first brake element 7 has a first braking surface 10 which is approximately 50% of the second braking surface 11 of the second braking element 8.
- the first brake element 7 is arranged between the two brake parts of the second brake element 8.
- the brake parts all have a thickness w of 9 to 12 mm.
- the axis 9 is dimensioned to take over the clamping forces arising during clamping of the brake elements 7, 8 in the second braking position.
- the safety gear 1 also has plain bearings 20, by means of which the brake elements are pivotable as described above.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
- Emergency Lowering Means (AREA)
Description
Die Erfindung betrifft eine Fangvorrichtung und ein Verfahren zum bedarfsgemässen Abbremsen und Festhalten eines Fahrkörpers einer Aufzugsanlage mittels der Fangvorrichtung gemäss dem Oberbegriff der unabhängigen Ansprüche sowie eine Aufzugsanlage mit einer derartigen Fangvorrichtung.The invention relates to a safety gear and a method for on-demand braking and holding a driving body of an elevator installation by means of the safety gear according to the preamble of the independent claims and an elevator installation with such a safety gear.
Aufzugsanlagen sind in Gebäude einbaut und bestehen üblicherweise unter anderem aus einer Aufzugskabine, die mit einer Trageinrichtung gehalten wird. Mittels eines Antriebs ist die Aufzugskabine in einer Aufwärtsrichtung, das heisst im Wesentlichen entgegengesetzt der Wirkung der Schwerkraft oder in einer Abwärtsrichtung, das heisst im Wesentlichen in Richtung der Wirkung der Schwerkraft, bewegbar zum Transport von Personen und/oder Gütern. Die Bewegung der Aufzugskabine, auch Fahrkörper genannt, erfolgt im Wesentlichen in vertikaler Richtung.Elevator systems are installed in buildings and usually consist inter alia of an elevator car, which is held with a support device. By means of a drive, the elevator car is in an upward direction, that is, substantially opposite to the action of gravity or in a downward direction, that is, substantially in the direction of the action of gravity, movable to transport people and / or goods. The movement of the elevator car, also called a running body, takes place essentially in the vertical direction.
Derartige bekannte Aufzugsanlagen umfassen häufig Fangvorrichtungen, um im Falle des Versagens des Antriebs oder der Trageinrichtung diese zu sichern oder auch vor ungewolltem Wegdriften oder Abstürzen zu bewahren.Such known elevator systems often include safety gears in order to secure them in the event of failure of the drive or the support device or to protect against unwanted drifting or crashes.
Aus der
Auch die
Es ist ein Bedürfnis, die Positionierung des Bremskörpers zur Bremsschiene und/oder einer Führungsschiene des Fahrkörpers zuverlässiger zu gestalten und konstruktiv zu vereinfachen. Zudem ist es ein Bedürfnis, die Rückstellung der Fangvorrichtung aus einer Bremsposition in eine Ruheposition, in der die Fangvorrichtung keine Bremswirkung ausübt, ebenfalls konstruktiv zu vereinfachen und zuverlässiger auszugestalten.There is a need to make the positioning of the brake body to the brake rail and / or a guide rail of the vehicle more reliable and constructive simplify. In addition, there is a need to simplify the design of the safety gear from a braking position in a rest position in which the safety gear has no braking effect, constructively and more reliably.
Es ist daher eine Aufgabe der vorliegenden Erfindung, die Nachteile des Bekannten zu vermeiden. Es soll insbesondere eine Vorrichtung und ein Verfahren der eingangs genannten Art bereit gestellt werden, mit der ein Abbremsen und Festhalten des Fahrkörpers einer Aufzugsanlage zuverlässig erfolgen kann. Auch soll die Fangvorrichtung konstruktiv einfach sein. Zudem ist es insbesondere eine Aufgabe, eine zuverlässige und kostengünstige Ausgestaltung der Einrichtung zur Rückstellung der Fangvorrichtung in die Ruheposition, in der keine Bremswirkung ausgeübt wird, zu gewährleisten.It is therefore an object of the present invention to avoid the disadvantages of the known. In particular, a device and a method of the type mentioned in the introduction should be provided, with which braking and holding of the driving body of an elevator installation can reliably take place. Also, the safety gear should be structurally simple. In addition, it is a particular object to ensure a reliable and inexpensive design of the device for returning the safety gear in the rest position in which no braking effect is exercised.
Zumindest einzelne dieser Aufgaben werden mit einer Fangvorrichtung und einem Verfahren mit den Merkmalen der unabhängigen Ansprüche gelöst.At least some of these objects are achieved with a safety gear and a method having the features of the independent claims.
Die Fangvorrichtung für eine Aufzugsanlage mit mindestens einem Fahrkörper, welcher entlang einer Führungsschiene und/oder einer Bremsschiene in einem Aufzugsschacht verfahrbar angeordnet ist, ist geeignet zum bedarfsgemässen Abbremsen und Festhalten des Fahrkörpers an der Führungsschiene und/oder an einer Bremsschiene. Die Fangvorrichtung umfasst einen Träger zur Aufnahme eines Bremskörpers und eine Steuer- oder Grundplatte zur Positionierung des Bremskörpers relativ zu der Führungsschiene und/oder der Bremsschiene. Der Bremskörper ist zumindest zweistückig ausgebildet und umfasst ein erstes Bremselement und ein zweites Bremselement. Die beiden Bremselemente sind im Wesentlichen unabhängig voneinander bewegbar. Das erste Bremselement ist im Wesentlichen nur für ein Abbremsen und Festhalten bei Verfahren des Fahrkörpers entlang der Führungsschiene und/oder Bremsschiene in einer Aufwärtsrichtung ausgestaltet. Das zweite Bremselement ist im Wesentlichen nur für ein Abbremsen und Festhalten bei Verfahren des Fahrkörpers entlang der Führungsschiene und/oder der Bremsschiene in einer Abwärtsrichtung ausgestaltet. Die Steuerplatte kann auch als Grundplatte bezeichnet werden, da sie ausgeführt ist, um die Bremselemente in einer Grundposition zu halten. Diese Begriffe sind in diesem Zusammenhang gleichbedeutend.The safety gear for an elevator installation with at least one drive body, which is arranged so as to be movable along a guide rail and / or a brake rail in an elevator shaft, is suitable for demand-based braking and holding of the drive body on the guide rail and / or on a brake rail. The safety gear comprises a carrier for receiving a brake body and a control or base plate for positioning the brake body relative to the guide rail and / or the brake rail. The brake body is formed at least in two pieces and comprises a first brake element and a second brake element. The two brake elements are substantially independently movable. The first brake element is designed substantially only for braking and holding in process of the driving body along the guide rail and / or brake rail in an upward direction. The second brake element is designed substantially only for braking and holding in process of the driving body along the guide rail and / or the brake rail in a downward direction. The control plate may also be referred to as a base plate, since it is designed to hold the brake elements in a basic position. These terms are synonymous in this context.
Die beiden Bremselemente können im Bedarfsfall miteinander in Kontakt mit der Führungsschiene und/oder der Bremsschiene gebracht, bzw. zu dieser zugestellt werden. Abhängig von der Verfahrrichtung des Fahrkörpers wird zwangsläufig, bedingt durch einen Reibschluss zwischen Bremskörper und Führungsschiene und/oder der Bremsschiene, das entsprechende Bremselement mitgenommen und in eine endgültige, bzw. zweite Bremsposition gebracht.If necessary, the two brake elements can be brought into contact with the guide rail and / or the brake rail, or delivered to this. Depending on the direction of travel of the driving body is inevitably, due to a frictional engagement between the brake body and guide rail and / or the brake rail, taken along the corresponding brake element and placed in a final or second braking position.
Dies hat den Vorteil, dass der Bremskörper einfach an die jeweiligen Anforderungen zur Bremskraft für die Aufwärtsrichtung und/oder Abwärtsrichtung anpassbar ist, was den Betrieb der Vorrichtung zuverlässiger und auch kostengünstiger macht. Es ist beispielsweise möglich, bei entsprechendem Verschleiss eines Bremselements nur dieses auszutauschen, wenn der Verschleiss der Bremselemente des Bremskörpers für die unterschiedlichen Richtungen unterschiedlich ist. Somit ist der Betrieb der Fangvorrichtung gegebenenfalls kostengünstiger gegenüber vorbekannten Fangvorrichtungen. Auch kann ein Platzbedarf der Fangvorrichtung optimiert werden, da das benötigte Bremselement unabhängig vom anderen Bremselement bewegt werden kann.This has the advantage that the brake body is easily adaptable to the respective requirements for braking force for the upward direction and / or downward direction, which makes the operation of the device reliable and also less expensive. It is for example possible, with appropriate wear of a brake element to replace only this, if the wear of the brake elements of the brake body is different for the different directions. Thus, the operation of the safety gear is possibly cheaper than prior art safety gears. Also, a footprint of the safety gear can be optimized because the required brake element can be moved independently of the other brake element.
Insbesondere umfasst die Vorrichtung einen Gegenbremskörper, der derartig angeordnet ist, dass die Führungsschiene und/oder die Bremsschiene zwischen dem Bremskörper und dem Gegenbremskörper einklemmbar ist zur Erzeugung einer Bremswirkung. Die Bremskraft kann dabei unter anderem durch die durch den Gegenbremskörper auf die Führungsscheine und/oder Bremsschiene aufgebrachte Kraft eingestellt werden. Beispielsweise kann der Gegenbremskörper mit Tellerfedern ausgestaltet sein, mit denen die wirkende Bremskraft einstellbar ist. Durch die Zustellung der Bremselemente zur Führungs-, bzw. Bremsschiene wird vorzugsweise der Träger zusammen mit dem Gegenbremskörper derart verschoben, dass die Führungs-, bzw. die Bremsschiene zwischen dem Bremskörper und dem Gegenbremskörper geklemmt wird.In particular, the device comprises a counter-brake body, which is arranged such that the guide rail and / or the brake rail between the brake body and the counter-brake body can be clamped to produce a braking effect. The braking force can be adjusted inter alia by the force applied by the counter-brake body on the guide notes and / or brake rail force. For example, the counter-brake body can be configured with disc springs, with which the acting braking force is adjustable. By the delivery of the brake elements to the guide, or brake rail, the carrier is preferably moved together with the counter-brake body such that the guide, and the brake rail between the brake body and the counter-brake body is clamped.
Bevorzugt ist die Steuerplatte in einer Ruheposition und einer Bremsposition positionierbar. Die Positionierung kann insbesondere mittels einer linearen Bewegung und/oder einer Schwenkbewegung der Steuerplatte erfolgen. Beispielsweise kann also die Steuerplatte von der Ruheposition in die Bremsposition mittels einer linearen Bewegung, einer Schwenkbewegung oder einer Kombination aus linearer Bewegung und Schwenkbewegung positioniert werden. Auch die Positionierung der Steuerplatte aus der Bremsposition zurück in die Ruheposition kann sinngemäss ebenso mittels linearer Bewegung, Schwenkbewegung oder einer Kombination aus linearer Bewegung und Schwenkbewegung erfolgen.Preferably, the control plate is positionable in a rest position and a braking position. The positioning can be done in particular by means of a linear movement and / or a pivoting movement of the control plate. For example, so the control plate can be positioned from the rest position to the braking position by means of a linear movement, a pivoting movement or a combination of linear movement and pivotal movement. Also, the positioning of the control plate from the Braking position back into the rest position can also be carried out by linear movement, pivoting movement or a combination of linear movement and pivoting movement.
Dies hat den Vorteil, dass zum Zweck der Betätigung der Fangvorrichtung nur die Steuerplatte im Träger positioniert wird, wodurch sie den Bremskörper in eine erste Bremsposition bewegt, bzw. zur Schiene zustellt. So kann eine Betätigung der Fangvorrichtung unabhängig einer Verfahrrichtung erfolgen und zum Zweck der Betätigung muss beispielsweise nicht das gesamte Gehäuse der Fangvorrichtung verschoben werden. Dies macht die Konstruktion der Fangvorrichtung, insbesondere deren Betätigungseinrichtung einfacher und kostengünstiger gegenüber dem Stand der Technik. Zudem ist eine lineare Bewegung oder auch eine Schwenkbewegung lediglich der Steuerplatte von der Ruheposition in die Bremsposition und umgekehrt konstruktiv einfach und zuverlässig realisierbar.This has the advantage that, for the purpose of actuating the safety gear, only the control plate is positioned in the carrier, whereby it moves the brake body in a first braking position, or delivered to the rail. Thus, an actuation of the safety gear can be made independently of a travel direction and for the purpose of the operation, for example, not the entire housing of the safety gear must be moved. This makes the construction of the safety gear, in particular the actuator easier and cheaper than the prior art. In addition, a linear movement or a pivoting movement of the control plate only from the rest position to the braking position and vice versa structurally simple and reliable realized.
Bevorzugt ist die Steuerplatte mittels eines insbesondere abschaltbaren Elektromagneten in der Ruheposition haltbar. Dies hat den Vorteil, dass eine derartige Konstruktion einfach realisierbar und damit kostengünstig ist. Zudem kann sichergestellt werden, dass beispielsweise bei einem Stromausfall der Elektromagnet abgeschaltet wird, wodurch eine Bremswirkung der Fangvorrichtung ausgelöst wird, was den Betrieb der Fangvorrichtung als Notbremse ermöglicht. Selbstverständlich können Notstromversorgungen, beispielsweise eine Batterie oder ein Kondensator, vorgesehen sein, um kurzzeitige Stromunterbrüche zu überbrücken. Derartige Notstromversorgungen sind dann natürlich in ein Sicherheits- oder Ansteuerkonzept der Aufzugsanlage einbezogen.Preferably, the control plate by means of a particular turn-off electromagnet in the rest position preserved. This has the advantage that such a construction is easy to implement and therefore inexpensive. In addition, it can be ensured that, for example, in the event of a power failure, the electromagnet is switched off, as a result of which a braking effect of the safety gear is triggered, which makes it possible to operate the safety gear as an emergency brake. Of course, emergency power supplies, such as a battery or a capacitor may be provided to bridge short-term power interruptions. Such emergency power supplies are of course included in a safety or control concept of the elevator system.
Alternativ zur Verwendung eines insbesondere abschaltbaren Elektromagneten zum Halten der Steuerplatte in der Ruheposition ist auch die Verwendung einer mechanischen Arretiervorrichtung wie eines Greifers oder eines Bolzens denkbar. Diese können lösbar mit der Steuerplatte verbunden sein, sodass die Steuerplatte von der Ruheposition in die Bremsposition bewegbar ist.Alternatively to the use of a particular turn-off electromagnet for holding the control plate in the rest position and the use of a mechanical locking device such as a gripper or a bolt is conceivable. These may be releasably connected to the control plate, so that the control plate is movable from the rest position to the braking position.
Bevorzugt ist die Steuerplatte mittels einer Druckfeder in die Bremsposition bewegbar. Dies hat den Vorteil, dass die Steuerplatte zuverlässig beispielsweise bei einem Stromausfall von der Ruheposition in die Bremsposition bewegbar ist, durch Ausübung einer Kraft auf die Steuerplatte durch die zumindest eine Druckfeder in Richtung der Bremsposition.Preferably, the control plate is movable by means of a compression spring in the braking position. This has the advantage that the control plate is reliably movable, for example, in a power failure from the rest position to the braking position, by exercise a force on the control plate by the at least one compression spring in the direction of the braking position.
Alternativ zur Verwendung einer Druckfeder zur Positionierung der Steuerplatte von der Ruheposition in die Bremsposition kann die Positionierung auch mittels eines hydraulischen, pneumatischen oder elektrischen Antriebs erfolgen, wie diese dem Fachmann bekannt sind. Zudem ist auch beispielsweise die Verwendung einer Zugfeder denkbar.Alternatively to the use of a compression spring for positioning the control plate from the rest position to the braking position, the positioning can also be effected by means of a hydraulic, pneumatic or electric drive, as these are known in the art. In addition, for example, the use of a tension spring is conceivable.
Bevorzugt sind das erste Bremselement und/oder das zweite Bremselement schwenkbar. Insbesondere sind das erste Bremselement und/oder das zweite Bremselement um eine, vorzugsweise im oder am Träger angeordnete gemeinsame Achse schwenkbar, insbesondere in entgegengesetzten Richtungen. Dies hat den Vorteil, dass durch die Positionierung der Steuerplatte und ein entsprechendes Schwenken der Bremselemente, diese in Kontakt mit der Führungsschiene und/oder Bremsschiene bringbar sind. Dies ist konstruktiv einfach, zuverlässig und kostengünstig realisierbar, da keine aufwendigen Einrichtungen zur Positionierung der Fangvorrichtung benötigt werden. Zudem sind vorteilhaft die zum Betätigen der Bremselemente notwendigen Initialkräfte gering, da jeweils nur die einzelnen Bremselemente geschwenkt werden.Preferably, the first brake element and / or the second brake element are pivotable. In particular, the first brake element and / or the second brake element are pivotable about a common axis, preferably arranged in or on the carrier, in particular in opposite directions. This has the advantage that the positioning of the control plate and a corresponding pivoting of the brake elements, these can be brought into contact with the guide rail and / or brake rail. This is structurally simple, reliable and inexpensive to implement, since no complex facilities for positioning the safety gear are needed. In addition, the necessary for actuating the brake elements initial forces are low, since in each case only the individual brake elements are pivoted.
Bevorzugt sind das erste Bremselement und/oder das zweite Bremselement aus einer Grundposition in eine erste Bremsposition derart schwenkbar, dass das erste Bremselement und/oder das zweite Bremselement in Kontakt mit der Führungsschiene und/oder der Bremsschiene steht.Preferably, the first brake element and / or the second brake element are pivotable from a basic position to a first brake position such that the first brake element and / or the second brake element is in contact with the guide rail and / or the brake rail.
Im Sinne der vorliegenden Anmeldung findet im Wesentlichen kein Abbremsen und Festhalten statt, wenn das erste Bremselement und/oder das zweite Bremselement in der ersten Bremsposition in Kontakt mit der Führungsschiene und/oder der Bremsschiene steht.For the purposes of the present application substantially no braking and holding takes place when the first brake element and / or the second brake element is in the first braking position in contact with the guide rail and / or the brake rail.
Bevorzugt sind das erste Bremselement und/oder das zweite Bremselement durch Reibschluss mit der Führungsschiene und/oder der Bremsschiene aus der ersten Bremsposition in eine zweite Bremsposition schwenkbar.Preferably, the first brake element and / or the second brake element by friction with the guide rail and / or the brake rail from the first braking position in a second braking position can be pivoted.
Dies hat den Vorteil, dass mittels einer einfachen Schwenkbewegung zumindest eines Bremselements, welches in Kontakt mit der Führungsschiene und/oder der Bremsschiene steht, dieses aus der ersten Bremsposition in eine zweite Bremsposition bringbar ist, was konstruktiv einfach realisierbar ist. Durch die Relativbewegung zwischen Führungsschiene und/oder Bremsschiene und dem entsprechenden Bremselement kann nun ein weiteres Schwenken des Bremselements erfolgen, wodurch die Bremswirkung der Fangvorrichtung vergrössert wird. Besonders vorteilhaft ist hierbei, dass dieses weitere Schwenken direkt abhängig von der Richtung der Relativbewegung ist. Diese Richtung entscheidet also, welches der beiden Bremselemente in die finale zweite Bremsposition geschwenkt wird. Damit kann mittels der Formgebung der Bremselemente eine Bremskraft für Abwärts- und Aufwärtsfahrt individuell vorgegeben werden.This has the advantage that by means of a simple pivoting movement of at least one braking element, which is in contact with the guide rail and / or the brake rail, this can be brought from the first braking position to a second braking position, which is structurally easy to implement. By the relative movement between the guide rail and / or brake rail and the corresponding brake element, a further pivoting of the brake element can now take place, whereby the braking effect of the safety gear is increased. It is particularly advantageous here that this further pivoting is directly dependent on the direction of the relative movement. This direction thus decides which of the two brake elements is pivoted to the final second braking position. Thus, by means of the shaping of the brake elements, a braking force for downward and upward travel can be individually specified.
Insbesondere kann ein Lösen der Fangvorrichtung durch ein Zurückschwenken des ersten Bremselements und/oder des zweiten Bremselements durch Reibschluss mit der Führungsschiene und/oder der Bremsschiene aus der zweiten Bremsposition in die erste Bremsposition erfolgen. Dies entspricht insbesondere einer entgegengesetzten Relativbewegung bezüglich der Relativbewegung beim Schwenken des entsprechenden Bremselements aus der ersten Bremsposition in die zweite Bremsposition. Dies hat den Vorteil, dass das Lösen der Fangvorrichtung durch Schwenken des entsprechenden Bremselements aus der zweiten Bremsposition in die erste Bremsposition konstruktiv einfach und zuverlässig erfolgen kann, da beispielsweise keine zusätzliche Rückstelleinrichtung notwendig ist. Aus der ersten Bremsposition kann das entsprechende Bremselement in die Grundposition durch ein entsprechendes Zurückschwenken gebracht werden.In particular, a release of the safety gear can take place by pivoting back of the first brake element and / or the second brake element by frictional engagement with the guide rail and / or the brake rail from the second braking position to the first braking position. This corresponds in particular to an opposite relative movement relative to the relative movement during pivoting of the corresponding brake element from the first braking position to the second braking position. This has the advantage that the release of the safety gear by pivoting the corresponding brake element from the second braking position to the first braking position can be structurally simple and reliable, since, for example, no additional return device is necessary. From the first braking position, the corresponding brake element can be brought into the home position by a corresponding pivoting back.
Bevorzugt ist die Steuerplatte aus der Bremsposition in die Ruheposition durch Schwenken des ersten Bremselements und/oder des zweiten Bremselements aus der ersten Bremsposition in die zweite Bremsposition bewegbar. Mit anderen Worten wird durch ein Schwenken eines der Bremselemente von der ersten Bremsposition in die zweite Bremsposition die Steuerplatte aus der Bremsposition in die Ruheposition zurückbewegt.Preferably, the control plate is movable from the braking position to the rest position by pivoting the first braking element and / or the second braking element from the first braking position to the second braking position. In other words, by pivoting one of the brake elements from the first braking position to the second braking position, the control plate is moved back from the braking position to the rest position.
Dies hat den Vorteil, dass einerseits das erste und /oder das zweite Bremselement, durch die Positionierung der Steuerplatte von ihrer Ruheposition in die Bremsposition, in die erste Bremsposition bewegt werden. Andererseits wird, durch die anschliessende durch den Reibschluss mit der Führungsschiene und/oder der Bremsschiene bewirkte Weiterbewegung des ersten Bremselements oder des zweiten Bremselements, die Steuerplatte von ihrer Bremsposition in die Ruheposition zurückbewegt. In der Grundposition kann die Steuerplatte beispielsweise mittels der Arretiereinrichtung wieder gehalten werden. Die Arretiereinrichtung kann beispielsweise als abschaltbarer Elektromagnet ausgebildet sein. Somit hält der Elektromagnet die Steuerplatte in der Ruheposition. Im Bedarfsfall wird der Elektromagnet abgeschaltet und die Steuerplatte wird in die Bremsposition verschoben, wobei sie die Bremselemente in die erste Bremsposition bewegt. Abhängig von der Verfahrrichtung des Fahrkörpers wird das entsprechende Bremselement in die zweite Bremsposition bewegt, wodurch die Führungs- oder Bremsschiene geklemmt und der Fahrkörper abgebremst wird. Gleichzeitig, beim Verschieben des entsprechenden Bremselements von der ersten in die zweite Bremsposition kann wie beschrieben die Steuerplatte zurück zum Elektromagnet bewegt werden. Dies ist besonders vorteilhaft, da nun zum Halten der Steuerplatte in der Ruheposition lediglich der Elektromagnet eingeschaltet werden kann. Er benötigt keine weitere Rückholenergie, was die konstruktive Ausgestaltung der Fangvorrichtung weiter vereinfacht und diese kostengünstiger macht.This has the advantage that on the one hand the first and / or the second brake element, by the positioning of the control plate from its rest position to the braking position, in the first braking position to be moved. On the other hand, by the subsequent continued by the frictional engagement with the guide rail and / or the brake rail further movement of the first brake element or the second brake element, the control plate is moved back from its braking position to the rest position. In the basic position, the control plate can be held again, for example by means of the locking device. The locking device may be formed, for example, as a disconnectable solenoid. Thus, the solenoid holds the control plate in the rest position. If necessary, the solenoid is turned off and the control plate is moved to the braking position, wherein it moves the brake elements in the first braking position. Depending on the direction of travel of the driving body, the corresponding braking element is moved to the second braking position, whereby the guide or brake rail clamped and the vehicle body is braked. At the same time, when shifting the corresponding braking element from the first to the second braking position, as described, the control plate can be moved back to the electromagnet. This is particularly advantageous, since now only the electromagnet can be switched on to hold the control plate in the rest position. He needs no further return energy, which further simplifies the structural design of the safety gear and makes this cheaper.
Bevorzugt ist das erste Bremselement und/oder das zweite Bremselement als Exzenterscheibe ausgebildet. Dies ermöglicht vorteilhaft eine kompakte und einfache Bauweise der Fangvorrichtung.Preferably, the first brake element and / or the second brake element is designed as an eccentric disc. This advantageously allows a compact and simple construction of the safety gear.
Unter einer Exzenterscheibe wird im Sinne der vorliegenden Anmeldung eine Scheibe mit beliebiger äusserer Kontur verstanden, die schwenkbar um eine Achse ausserhalb des geometrischen Mittelpunkts gelagert ist. Beispielsweise kann eine entsprechend gelagerte Kurvenscheibe eine Exzenterscheibe im Sinne der vorliegenden Anmeldung sein.For the purposes of the present application, an eccentric disc is understood to mean a disc having an arbitrary outer contour, which is mounted pivotably about an axis outside the geometric center point. For example, a correspondingly mounted cam may be an eccentric disc in the sense of the present application.
Bevorzugt ist die Exzenterscheibe auf der der Führungsschiene und/oder der Bremsschiene zugewandten Seite abschnittsweise gekrümmt. Insbesondere ist der Abschnitt gekrümmt, der in der ersten Bremsposition mit der Führungsschiene und/oder der Bremsschiene in Kontakt steht. Besonders bevorzugt ist der Radius der Exzenterscheibe zunehmend bezogen auf die Richtung der Schwenkung von der ersten in die zweite Bremsposition. Dies hat den Vorteil, dass durch den Reibschluss zwischen Exzenterscheibe im gekrümmten Bereich und der Führungsschiene und/oder Bremsschiene die Exzenterscheibe zuverlässig in die zweite Bremsposition schwenkbar ist zur Erzielung der gewünschten Bremswirkung.Preferably, the eccentric disk is curved in sections on the side facing the guide rail and / or the brake rail. In particular, the portion which is in contact with the guide rail and / or the brake rail in the first braking position is curved. Particularly preferably, the radius of the eccentric disc is increasingly based on the direction of the pivoting from the first to the second braking position. This has the advantage that due to the frictional engagement between the eccentric disc in the curved area and the guide rail and / or brake rail, the eccentric disc is reliably pivotable in the second braking position to achieve the desired braking effect.
Bevorzugt ist die Exzenterscheibe auf der der Führungsschiene und/oder der Bremsschiene zugewandten Seite abschnittsweise eben. Insbesondere ist der Abschnitt eben, der in der zweiten Bremsposition mit der Führungsschiene und/oder der Bremsschiene in Kontakt steht. Dies hat den Vorteil, dass eine möglichst grosse Kontaktfläche zwischen Exzenterscheibe und Führungsschiene und/oder Bremsschiene ermöglicht wird zur Erzielung einer hohen Bremswirkung durch die Fangvorrichtung.Preferably, the eccentric disk on the guide rail and / or the brake rail side facing just in sections. In particular, the portion is flat, which is in the second braking position with the guide rail and / or the brake rail in contact. This has the advantage that the largest possible contact surface between eccentric and guide rail and / or brake rail is made possible to achieve a high braking effect by the safety gear.
Insbesondere weist die Exzenterscheibe einen ersten gekrümmten Abschnitt und einen zweiten ebenen Abschnitt auf. Über den Bereich des ersten gekrümmten Abschnitts kann die Fangvorrichtung gespannt werden und bei Erreichen des zweiten, ebenen Abschnitts steht die möglichst grosse Kontaktfläche zum Bremsen zur Verfügung. Gleichzeitig kann durch die ebene Fläche ein Weiterdrehen der Exzenterscheibe gestoppt werden. Alternativ kann natürlich auch eine durchgehend gekrümmte Exzenterscheibe verwendet werden. Hierbei kann die Bremsposition durch einen Anschlag definiert sein, der ein Weiterdrehen der Exzenterscheibe verhindert. Diese Alternative kann bei kleinen Lasten oder bei kleinen Geschwindigkeiten von Vorteil sein, da eine Bremsbelastung entsprechend der kleinen Last oder eines geringen Bremswegs gering ist.In particular, the eccentric disc has a first curved portion and a second planar portion. Over the region of the first curved portion, the safety gear can be tensioned and on reaching the second, flat portion of the largest possible contact surface for braking is available. At the same time further rotation of the eccentric disc can be stopped by the flat surface. Alternatively, of course, a continuously curved eccentric disc can be used. Here, the braking position may be defined by a stop which prevents further rotation of the eccentric disc. This alternative may be advantageous for small loads or at low speeds because a braking load corresponding to the small load or a small braking distance is small.
Bevorzugt ist die Exzenterscheibe auf der der Führungsschiene und/oder der Bremsschiene abgewandten Seite derart ausgestaltet, dass durch ein Schwenken, insbesondere von der ersten Bremsposition in die zweite Bremsposition, der Exzenterscheibe eine Rückstellkraft auf die Steuerplatte ausübbar ist zur Bewegung der Steuerplatte in die Ruheposition.Preferably, the eccentric disc on the guide rail and / or the brake rail side facing away configured such that by pivoting, in particular from the first braking position to the second braking position, the eccentric a restoring force on the control plate is exercised for moving the control plate in the rest position.
Bevorzugt weist die Steuerplatte eine derartige Kontaktfläche auf, dass beim Bewegen der Steuerplatte in die Bremsposition die Exzenterscheibe in die erste Bremsposition schwenkbar ist und die Rückstellkraft auf die Steuerplatte beim Schwenken der Exzenterscheibe in die zweite Bremsposition ausübbar ist.Preferably, the control plate on such a contact surface, that when moving the control plate in the braking position, the eccentric disc is pivotable in the first braking position and the restoring force on the control plate during pivoting of the eccentric disc in the second braking position can be exercised.
Diese Ausgestaltung von Exzenterscheibe und Steuerplatte hat den Vorteil, dass die Rückstellung der Steuerplatte in die Ruheposition beim Schwenken der Exzenterscheibe in die zweite Bremsposition durch mechanische Interaktionen zwischen Exzenterscheibe und Steuerplatte erzielbar ist.This embodiment of eccentric disc and control plate has the advantage that the provision of the control plate in the rest position during pivoting of the eccentric disc in the second braking position by mechanical interactions between the eccentric disc and the control plate can be achieved.
Beispielsweise kann die Aussenfläche der Exzenterscheibe in der zweiten Bremsposition ausgehend von der Schwenkachse auf der der Führungsschiene und/oder Bremsschiene zugewandten Seite einen grösseren Abstand haben als auf der der Führungsschiene und/oder Bremsschiene abgewandten Seite. Die abgewandte Seite der Exzenterscheibe drückt dabei auf die Steuerplatte. Dadurch lässt sich vorteilhaft eine kompakte Bauweise der Fangvorrichtung erreichen. Durch entsprechende Ausgestaltung der Kontur der Steuerplatte, die mit der Exzenterscheibe wechselwirkt, kann die Bewegung der Steuerplatte in die Ruheposition erreicht werden. Als Kontaktfläche kann die Steuerplatte auf der der Exzenterscheibe zugewandten Seite beispielsweise eine keilförmige Oberfläche aufweisen, mit der die der Führungsschiene und/oder Bremsschiene abgewandte Seite der Exzenterseite zusammenwirken kann. Dadurch wird beim Schwenken der Exzenterscheibe in die zweite Bremsposition die Steuerplatte entsprechend in die Ruheposition bewegt.For example, the outer surface of the eccentric disc in the second braking position, starting from the pivot axis on the side facing the guide rail and / or brake rail side have a greater distance than on the side facing away from the guide rail and / or brake rail. The opposite side of the eccentric presses on the control plate. This makes it advantageous to achieve a compact design of the safety gear. By appropriate design of the contour of the control plate, which interacts with the eccentric, the movement of the control plate can be achieved in the rest position. As a contact surface, the control plate on the eccentric disk facing side, for example, have a wedge-shaped surface, with which the guide rail and / or brake rail remote from the side of the eccentric side can cooperate. As a result, when the eccentric disk is pivoted into the second braking position, the control plate is correspondingly moved into the rest position.
Insbesondere ist die keilförmige Oberfläche der Steuerplatte für jedes Bremselement so ausgestaltet, dass eine gewünschte Schwenkung in die erste Bremsposition des ersten und zweiten Bremselements erfolgen kann. Beispielsweise kann die keilförmige Oberfläche für das erste Bremselement in einer ersten Richtung angeordnet sein und für das zweite Bremselement in einer zweiten Richtung, die der ersten Richtung im Wesentlichen entgegengesetzt ist.In particular, the wedge-shaped surface of the control plate is designed for each brake element so that a desired pivoting can take place in the first braking position of the first and second brake element. For example, the wedge-shaped surface for the first brake element may be arranged in a first direction and for the second brake element in a second direction, which is substantially opposite to the first direction.
Bevorzugt weist die Fangvorrichtung eine erste Bremsfläche des ersten Bremselements kleiner als eine zweite Bremsfläche des zweiten Bremselements auf. Insbesondere beträgt die Bremsfläche des ersten Bremselements höchstens 75% und weiter insbesondere höchstens 60% der zweiten Bremsfläche. Insbesondere weist das erste Bremselement eine erste Bremsfläche entsprechend etwa 50% der zweiten Bremsfläche des zweiten Bremselements auf.The safety device preferably has a first brake surface of the first brake element smaller than a second brake surface of the second brake element. In particular, the braking surface of the first braking element is at most 75% and more particularly at most 60% of the second braking surface. In particular, the first brake element has a first brake surface corresponding to approximately 50% of the second brake surface of the second brake element.
Dies hat den Vorteil einer kostengünstigen Ausgestaltung der Fangvorrichtung, da bei einer Abbremsung des Fahrkörpers in einer Aufwärtsrichtung kleinere Bremskräfte als bei einer Abbremsung in Abwärtsrichtung benötigt werden. Das ist durch entsprechende Anpassung der Bremsflächen des ersten Bremselements und des zweiten Bremselements realisierbar.This has the advantage of a cost-effective design of the safety gear, since at a deceleration of the vehicle body in an upward direction smaller braking forces than in a deceleration in the downward direction are needed. This can be realized by appropriate adaptation of the braking surfaces of the first brake element and the second brake element.
Insbesondere wird die Bremsfläche der Bremselemente durch den ebenen Abschnitt der Exzenterscheiben gebildet.In particular, the braking surface of the brake elements is formed by the flat portion of the eccentric discs.
Bevorzugt wird die Bremsfläche durch die Dicke der Bremselemente und insbesondere der Exzenterscheiben bestimmt. Beispielsweise kann die Dicke des ersten Bremselements 50% der Dicke des zweiten Bremselements betragen, wodurch die erste Bremsfläche 50% der zweiten Bremsfläche beträgt.Preferably, the braking surface is determined by the thickness of the brake elements and in particular the eccentric discs. By way of example, the thickness of the first brake element may amount to 50% of the thickness of the second brake element, as a result of which the first brake surface is 50% of the second brake surface.
Bevorzugt umfasst das zweite Bremselement zwei Bremsteile mit insbesondere im Wesentlichen gleicher Bremsfläche, wobei das erste Bremselement eine erste Bremsfläche im Wesentlichen gleich einem der Bremsteile des zweiten Bremselements aufweist. Dies hat den Vorteil, dass beispielsweise identische Bremsteile für das Abbremsen in Aufwärtsrichtung und Abwärtsrichtung verwendbar sind und dass jeweils nur die Anzahl der Bremsteile für die entsprechende Richtung zu wählen ist. Das vereinfacht die Handhabung und zudem wird die Lagerhaltung vereinfacht, da gleiche Bremsteile verwendbar sind, was weiter kostengünstig ist. Beispielsweise können die Bremsteile als Exzenterscheiben oder andere Bremsscheiben ausgebildet sein.Preferably, the second brake element comprises two brake parts with in particular substantially the same braking surface, wherein the first brake element has a first braking surface substantially equal to one of the brake parts of the second brake element. This has the advantage that, for example, identical brake parts can be used for braking in the upward and downward direction and that in each case only the number of brake parts for the corresponding direction is to be selected. This simplifies the handling and also the storage is simplified because the same brake parts are used, which is more cost-effective. For example, the brake parts may be formed as eccentric discs or other brake discs.
Insbesondere ist das erste Bremselement zwischen den zwei Bremsteilen des zweiten Bremselements angeordnet. Dies hat den Vorteil, dass die Stabilität und Bremswirkung der Fangvorrichtung verbessert wird, was die Fangvorrichtung zuverlässiger im Betrieb macht.In particular, the first brake element is arranged between the two brake parts of the second brake element. This has the advantage that the stability and braking effect of the safety gear is improved, which makes the safety gear more reliable in operation.
Bevorzugt ist an und/oder in der Fangvorrichtung zumindest ein Sensor zur Positionsüberwachung und/oder Zustandsüberwachung zumindest des ersten Bremselements, des zweiten Bremselement oder der Steuerplatte oder beliebigen Kombinationen daraus angeordnet. Dies hat den Vorteil, dass beispielsweise ein Verschleiss oder ein Auftreten von Fehlfunktionen führzeitig erkennbar ist, was den Betrieb noch zuverlässiger macht. Die "Zustandsüberwachung" dient unter anderem zur Überwachung des Verschleisses der Bremselemente, der auftretenden Bremskräfte sowie auch der Geschwindigkeit der Schwenkung der Bremselemente oder beliebigen Kombinationen daraus.At least one sensor for position monitoring and / or condition monitoring of at least the first brake element, the second brake element or the control plate or any combinations thereof is preferably arranged on and / or in the safety gear. This has the advantage that, for example, a wear or an occurrence of malfunctions can be seen at the outset, which makes the operation even more reliable. The "condition monitoring" serves inter alia to monitor the wear of the brake elements, the braking forces occurring as well as the speed of the pivoting of the brake elements or any combination thereof.
Bevorzugt sind das erste Bremselement und/oder das zweite Bremselement in Richtung der Steuerplatte vorgespannt. Insbesondere erfolgt die Vorspannung mittels zumindest einer Feder. Dies hat den Vorteil, dass in der Ruheposition der Steuerplatte gewährleistet wird, dass die Bremselemente nicht ungewollt in Richtung der Führungsschiene und/oder Bremsschiene geschwenkt werden und ungewollt die Fangvorrichtung ausgelöst wird. Die Feder kann als Zugfeder ausgeführt sein, welche das erste Bremselement und/oder das zweite Bremselement in Richtung der Grundposition vorspannt. Anstelle der Zugfeder sind auch Spiralfedern oder magnetische Rückzugsystem möglich.Preferably, the first brake element and / or the second brake element are biased in the direction of the control plate. In particular, the bias takes place by means of at least one spring. This has the advantage that is ensured in the rest position of the control plate that the brake elements are not inadvertently pivoted in the direction of the guide rail and / or brake rail and unintentionally the safety gear is triggered. The spring may be designed as a tension spring, which biases the first brake element and / or the second brake element in the direction of the basic position. Instead of the tension spring also spiral springs or magnetic retraction system are possible.
Ein weiterer Aspekt betrifft eine Aufzugsanlage umfassend eine Fangvorrichtung, wie vorstehend beschrieben.Another aspect relates to an elevator installation comprising a safety gear as described above.
Ein zusätzlicher Aspekt betrifft ein Verfahren zum bedarfsgemässen Abbremsen und Festhalten eines Fahrkörpers einer Aufzugsanlage mittels einer Fangvorrichtung. Insbesondere wird vorzugsweise eine Fangvorrichtung wie oben beschrieben verwendet. Die Fangvorrichtung weist eine Steuerplatte zur Positionierung des Bremskörpers relativ zu der Führungsschiene und/oder der Bremsschiene auf. Der Bremskörper umfasst ein erstes Bremselement und ein zweites Bremselement. Das erste Bremselement ist im Wesentlichen nur für ein Abbremsen bei Verfahren des Fahrkörpers entlang der Führungsschiene in einer Aufwärtsrichtung ausgestaltet. Das zweite Bremselement ist im Wesentlichen nur für ein Abbremsen bei Verfahren des Fahrkörpers entlang der Führungsschiene in einer zweiten, der Aufwärtsrichtung entgegengesetzten Abwärtsrichtung ausgestaltet. Das Verfahren umfasst den Schritt des Abbremsens und/oder Festhaltens des Fahrkörpers durch Positionieren des ersten und/oder zweiten Bremselements an der Führungsschiene und/oder der Bremsschiene. Dabei wird vorzugsweise das erste Bremselement und das zweite Bremselement mittels der Steuerplatte zur Führungs- bzw. zur Bremsschiene zugestellt und in eine erste Bremsposition gebracht. Beim Verfahren des Fahrkörpers entlang der Führungsschiene in der Aufwärtsrichtung wird das erste Bremselement, unabhängig vom zweiten Bremselement, von der ersten Bremsposition in eine zweite Bremsposition gebracht. Umgekehrt wird beim Verfahren des Fahrkörpers entlang der Führungsschiene in einer Abwärtsrichtung das zweite Bremselement, unabhängig vom ersten Bremselement, von der ersten Bremsposition in die zweite Bremsposition gebracht.An additional aspect relates to a method for demand-based braking and holding a driving body of a lift system by means of a safety gear. In particular, a safety device is preferably used as described above. The safety gear has a control plate for positioning the brake body relative to the guide rail and / or the brake rail. The brake body comprises a first brake element and a second brake element. The first brake element is designed substantially only for braking during movement of the driving body along the guide rail in an upward direction. The second brake element is designed substantially only for braking during movement of the driving body along the guide rail in a second, the upward direction opposite downward direction. The method comprises the step of braking and / or holding the drive body by positioning the first and / or second brake element on the guide rail and / or the brake rail. In this case, the first brake element and the second brake element is preferably delivered by means of the control plate to the guide rail or to the brake rail and brought into a first braking position. When moving the carriage along the guide rail in the upward direction, the first brake element, regardless of the second brake element, from the first braking position brought into a second braking position. Conversely, when the traveling body is moved along the guide rail in a downward direction, the second brake element, independently of the first brake element, is brought from the first brake position to the second brake position.
In einer Anwendung ist eine derartige Fangvorrichtung zum Aufrüsten und/oder Umrüsten einer Aufzugsanlage benutzt. Dies beinhaltet den Schritt des Installierens einer Fangvorrichtung wie oben beschrieben an und/oder in der Aufzugsanlage zur Herstellung einer Aufzugsanlage wie oben beschrieben.In one application, such a safety gear is used for upgrading and / or retrofitting an elevator installation. This includes the step of installing a safety gear as described above and / or in the elevator installation for the production of an elevator installation as described above.
Weitere Merkmale und Vorteile der Erfindung werden nachfolgend anhand von Ausführungsbeispielen zum besseren Verständnis näher erläutert, ohne dass die Erfindung auf die Ausführungsbeispiele zu beschränken ist. Es zeigen:
- Figur 1:
- Schematische Darstellung einer Aufzugsanlage mit einer erfindungsgemässen Fangvorrichtung;
- Figuren 2-7:
- schematische Darstellung einer erfindungsgemässen Fangvorrichtung in sequentiellen Betriebszuständen;
- Figur 8:
- geschnittene Seitenansicht eines Bremskörpers der erfindungsgemässen Fangvorrichtung.
- FIG. 1:
- Schematic representation of an elevator installation with a safety device according to the invention;
- Figures 2-7:
- schematic representation of a safety gear according to the invention in sequential operating states;
- FIG. 8:
- Sectional side view of a brake body of the inventive safety gear.
In
Die Aufzugsanlage 2 umfasst einen Aufzugsschacht 5, in dem eine Führungsschiene 4 angeordnet ist, entlang der der Fahrkörper 3 in einer Aufwärtsrichtung a oder einer Abwärtsrichtung b bewegbar ist. Der Fahrkörper 3 ist mittels einer aus Seilen gebildeten Trageinrichtung 16 im Aufzugsschacht 5 aufgehängt. Mittels eines Antriebs 15, der durch die Trageinrichtung 16 mit dem Fahrkörper 3 in Wirkverbindung steht, ist eine Bewegung des Fahrkörpers 3 in der Aufwärtsrichtung a und/oder der Abwärtsrichtung b möglich. Bei der dargestellten Aufzugsanlage 2 ist der Fahrkörper 3, vielfach eine Aufzugskabine, vollumfänglich vom Antrieb 15 getragen. In der Regel befindet sich, in der Form eines Gegengewichts, ein weiterer Fahrkörper im Aufzugsschacht, welcher sich entgegengesetzt zum Farbkörper 3 bewegt und welcher entsprechend am entgegengesetzten Ende der Trageinrichtung 16 befestigt ist.The
Die an dem Fahrkörper 3 angebrachte Fangvorrichtung 1 ist so ausgebildet, dass bei Bedarf wie beispielsweise einem Versagen der Trageinrichtung 16 oder bei Stromausfall der Fahrkörper abgebremst und festgehalten werden kann. Hierfür wird eine Bremswirkung durch die Fangvorrichtung 1 in Wechselwirkung mit der Führungsschiene 4 erzielt. Die Führungsschiene 4 kann gegebenenfalls auch als Bremsschiene ausgebildet sein.The mounted on the
Alternativ ist auch die Anordnung einer zusätzlichen Bremsschiene zur Führungsschiene denkbar, um beispielsweise den Fahrkörper 3 nur in bestimmten Abschnitten im Aufzugsschacht 5 mittels der Fangvorrichtung 1 abzubremsen.Alternatively, the arrangement of an additional brake rail to the guide rail is conceivable, for example, to decelerate the
An der Fangvorrichtung 1 ist ein Sensor 12 zur Positionsüberwachung und/oder Zustandsüberwachung der Fangvorrichtung 1 angeordnet. Mit dem Sensor 12 kann die Bremswirkung der Fangvorrichtung 1 beispielsweise mit einem Sollwert verglichen werden, womit sich eine Zustandsüberwachung der Fangvorrichtung erreichen lässt. Der Sensor 12 kann selbstverständlich auch an anderer Stelle am Fahrkörper angeordnet sein. Der Sensor 12 kann auch lediglich ein Schaltelement sein, welches eine Arbeitsstellung der Fangvorrichtung überwacht und beispielsweise die Aufzugsanlage stillsetzt, wenn die Fangvorrichtung betätigt ist.At the
Von hier an und im Folgenden werden gleiche Referenzzeichen für gleiche Merkmale in allen Figuren verwendet und werden deshalb nur bei Bedarf erneut erläutert.
In den
In the
Die Fangvorrichtung 1 weist einen Träger 22 auf. Der Träger 22 bildet eine gehäuseähnliche, tragfähige Struktur zur Aufnahme von Spannkräften der Fangvorrichtung. Eine Achse 9 ist fest im Träger 22 angeordnet. Weiter beinhaltet die Fangvorrichtung 1 einen zweistöckigen Bremskörper, umfassend ein erstes Bremselement 7 sowie ein zweites Bremselement 8. Die beiden Bremselemente sind als Exzenterscheiben ausgebildet und schwenkbar auf der gemeinsamen Achse 9 angeordnet. Eine Steuerplatte 6 ist verschiebbar, zwischen einer Ruheposition r und einer Bremsposition e, im oder am Träger 22 angeordnet. Die Steuerplatte 6 weist eine Oberfläche 19 als äussere Kontaktfläche auf. Die Oberfläche 19 steht in einer Wechselwirkung mit den Bremselementen 7, 8. Im Träger 22 sind weiter ein Elektromagnet 17 und Druckfedern 18 angeordnet. Der Elektromagnet 17 hält die Steuerplatte 6, gegen eine Kraft der Druckfedern 18, in der Ruheposition r. Weiter zieht eine Feder 23 das zweite Bremselement 8 elastisch gegen die Steuerplatte 6, bzw. gegen die Oberfläche 19 der Steuerplatte 6. Das zweite Bremselement 8 befindet sich so in der Grundposition g. Sinngemäss gleich ist ebenso das erste Bremselement 7 durch eine Feder (nicht dargestellt) in der Grundposition g gehalten.The
Auf der dem ersten und zweiten Bremselement 7, 8 abgewandten Seite der Führungsschiene 4 ist auf oder im Träger 22 ein Gegenbremskörper 13 angeordnet. Der Gegenbremskörper 13 ist mittels Tellerfedern 14 im Träger 22 abgestützt und gegen die Führungsschiene 4 pressbar, so dass eine Bremswirkung durch die Fangvorrichtung 1 erzielbar ist. Eine Anpresskraft des Bremskörpers 13 an die Führungsschiene 4 ist beispielsweise durch Auswahl der Vorspannung der Tellerfedern einstellbar.On the first and
Das erste Bremselement 7 weist eine erste Bremsfläche 10 auf und befindet sich in der Grundposition g. Das zweite Bremselement 8 weist eine zweite Bremsfläche 11 auf und befindet sich ebenfalls in der Grundposition g. Die Bremsfläche 11 ist grösser als die Bremsfläche 10, was jedoch in den
Der mit b gekennzeichnete Pfeil kennzeichnet die Relativbewegung zwischen dem Fahrkörper, an dem die Fangvorrichtung 1 angeordnet ist und der Führungsschiene 4. Der Fahrkörper wird in Abwärtsrichtung b bewegt, was in den
Die Steuerplatte 6 befindet sich in
In
Wie in
In
Zudem wurde während dem Spannen des zweiten Bremselements 8 in die zweite Bremsposition z die Steuerplatte 6 in die Ruheposition r bewegt und steht wieder in Kontakt mit dem Elektromagneten 17. Die Druckfedern 18 sind wieder vorgespannt. Der Elektromagnet 17 ist im Wesentlichen parallel zur Wirkung der Rückstellkraft u nachgiebig angeordnet, sodass ein Überdrücken ermöglicht wird, um einen Kontakt zwischen Steuerplatte 6 und Elektromagnet 17 bei der Rückstellung zu gewährleisten.In addition, during the tensioning of the
Wie in
Wie in
In
Die Fangvorrichtung 1 weist zudem Gleitlager 20 auf, mittels der die Bremselemente schwenkbar sind wie vorstehend beschrieben.The
Claims (15)
- Safety brake device (1) for a lift installation (2) with at least one travel body (3), which is arranged in a lift shaft (5) to be movable along a guide rail (4) and/or a brake rail, wherein the safety brake device (1) is provided for braking and holding the travel body (3) at the guide rail (4) and/or the brake rail when required, wherein the safety brake device (1) includes a brake body, which is of at least two-part construction and this brake body comprises a first brake element (7) and a second brake element (8), wherein the two brake elements (7, 8) are movable substantially independently of one another and the first brake element (7) is substantially designed substantially only for braking and holding in the case of movement of the travel body (3) along the guide rail (4) and/or the brake rail in an upward direction (a) and wherein the second brake element (8) is designed only for braking and holding in the case of movement of the travel body (3) along the guide rail (4) and/or the brake rail in a downward direction (b), characterised in that the safety brake device further includes a control plate (6) for positioning the brake body relative to the guide rail (4) and/or the brake rail so that the two brake elements (7, 8) can be adjusted together with respect to the guide rail (4) and/or the brake rail, wherein the control plate (6) is positionable in a rest position (r) and a braking position (e), particularly by means of a linear movement and/or a pivot movement.
- Safety brake device (1) according to claim 1, characterised in that the control plate (6) can be held in the rest position by means of an electromagnet which can, in particular, be switched off and that the control plate is movable into the braking position by means of a compression spring.
- Safety brake device (1) according to one of claims 1 and 2, characterised in that the first braking element (7) and/or the second brake element (8) is or are arranged at a support (22) of the safety brake device to be pivotable, in particular about a common axle (9) arranged at the support (22), and that the control plate (6) is arranged at the support (22) to be linearly or pivotably movable so that the control plate (6) can position the first brake element (7) and/or the second brake element (8) relative to the guide rail (4) and/or the brake rail.
- Safety brake device (1) according to claim 3, characterised in that the first brake element (7) and/or the second brake element (8) is or are pivotable from a basic position (g) into a first braking position (s) in such a way that the first brake element (7) and/or the second brake element (8) is or are in contact with the guide rail (4) and/or the brake rail.
- Safety brake device (1) according to claim 4, characterised in that the first brake element (7) and/or the second brake element (8) is or are pivotable from the first braking position (s) into a second braking position (z) by friction couple with the guide rail (4) and/or the brake rail.
- Safety brake device (1) according to any one of claims 1 to 5, characterised in that the control plate (6) is movable from the braking position (e) into the rest position (r) by pivotation of the first brake element (7) and/or the second brake element (8) from the first braking position (s) into the second braking position (z).
- Safety brake device (1) according to any one of claims 1 to 6, characterised in that the first brake element (7) and/or the second brake element (8) is constructed or are each constructed as an eccentric disc.
- Safety brake device (1) according to claim 7, characterised in that the eccentric disc is curved in a section on the side facing the guide rail (4) and/or the brake rail, in particular the section which in the first braking position (s) is in contact with the guide rail (4) and/or the brake rail, and that the eccentric disc is flat in a section on the side facing the guide rail (4) and/or the brake rail, in particular the section which in the second braking position (z) is in contact with the guide rail (4) and/or the brake rail.
- Safety brake device (1) according to one of claims 7 and 8, characterised in that the eccentric disc is designed in such a way on the side remote from the guide rail (4) and/or the brake rail that through pivotation of the eccentric disc, particularly from the first braking position (s) into the second braking position (z), a restoring force (u) can be exerted on the control plate (6) so that the control plate (6) is movable into the rest position (r) and/or that the control plate (6) has a contact surface of such a kind that on movement of the control plate (6) into the braking position (e) the eccentric disc is pivotable into the first braking position (s) and the restoring force (u) can be exerted on the control plate (6) when the eccentric disc is pivoted into the second braking position (z).
- Safety brake device (1) according to any one of claims 1 of 9, characterised in that a first brake area (10) of the first brake element (7) is smaller than a second brake area (11) of the second brake element (8), wherein, in particular, the first brake area (10) is at most 75% and, more particularly, at most 60% of the second brake area (11).
- Safety brake device (1) according to claim 10, characterised in that the second brake element (8) comprises two brake parts, particularly eccentric discs, with, in particular, substantially the same brake area, wherein the first brake element (7) has a first brake area substantially equal to one of the brake parts of the second brake element (8) and wherein, in particular, the first brake element (7) is arranged between the two brake parts of the first brake element (8).
- Safety brake device (1) according to any one of claims 1 to 11, characterised in that at least one sensor for positional monitoring and/or state monitoring of at least the first brake element (8), the second brake element (8), the control plate (6) or any combinations thereof is arranged at and/or in the safety brake device (1).
- Safety brake device (1) according to any one of claims 1 to 12, characterised in that the first brake element (7) and/or the second brake element (8) is or are biased in the direction of the control plate (6), particularly by means of at least one spring (23).
- Lift installation (2) comprising a safety brake device (1) according to any one of the preceding claims.
- Method for braking and holding, when required, a travel body (3) of a lift installation (2) by means of a safety brake device (1), wherein the safety brake device (1) includes a control plate (6) for positioning an at least two-part brake body relative to a guide rail (4) and/or a brake rail, wherein when required for braking and holding the travel body (3) as needed:- a first brake element (7) and a second brake element (8) of the brake body are adjusted by means of the control plate (6) with respect to the guide rail (4) and/or a brake rail and are brought into a first braking position (s) and- in the case of movement of the travel body (3) along the guide rail (4) in an upward direction (a) the first brake element (7) is brought independently of the second brake element (8) from the first braking position (s) into a second braking position (z) and in the case of movement of the travel body (3) along the guide rail (4) in a downward direction (b) the second brake element (8) is brought independently of the first brake element (7) from the first braking position (s) into the second braking position (z).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP13798965.3A EP2925655B1 (en) | 2012-11-27 | 2013-11-15 | Device for catching a cabin in a lift assembly |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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EP12194422 | 2012-11-27 | ||
PCT/EP2013/073990 WO2014082877A1 (en) | 2012-11-27 | 2013-11-15 | Safety catch for a traveling body of an elevator system |
EP13798965.3A EP2925655B1 (en) | 2012-11-27 | 2013-11-15 | Device for catching a cabin in a lift assembly |
Publications (2)
Publication Number | Publication Date |
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EP2925655A1 EP2925655A1 (en) | 2015-10-07 |
EP2925655B1 true EP2925655B1 (en) | 2017-01-11 |
Family
ID=47355829
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13792363.7A Active EP2925654B1 (en) | 2012-11-27 | 2013-11-15 | Device for catching a cabin in a lift assembly |
EP13798965.3A Active EP2925655B1 (en) | 2012-11-27 | 2013-11-15 | Device for catching a cabin in a lift assembly |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13792363.7A Active EP2925654B1 (en) | 2012-11-27 | 2013-11-15 | Device for catching a cabin in a lift assembly |
Country Status (14)
Country | Link |
---|---|
US (2) | US9663326B2 (en) |
EP (2) | EP2925654B1 (en) |
JP (1) | JP6181768B2 (en) |
KR (2) | KR102128638B1 (en) |
CN (2) | CN104936882B (en) |
AU (2) | AU2013351430B2 (en) |
BR (2) | BR112015011997B1 (en) |
CA (2) | CA2891747C (en) |
ES (2) | ES2711448T3 (en) |
HK (2) | HK1210453A1 (en) |
MX (2) | MX358850B (en) |
PH (2) | PH12015501107B1 (en) |
RU (1) | RU2643078C2 (en) |
WO (2) | WO2014082877A1 (en) |
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CN104936882B (en) * | 2012-11-27 | 2017-02-22 | 因温特奥股份公司 | Catching device for a traveling body of an elevator system |
CN107000994B (en) * | 2014-12-17 | 2020-10-09 | 因温特奥股份公司 | Buffer unit for elevator |
WO2017149968A1 (en) * | 2016-03-04 | 2017-09-08 | 三菱電機株式会社 | Elevator brake device |
US10569993B2 (en) * | 2017-03-29 | 2020-02-25 | Otis Elevator Company | Safety brake actuation mechanism for a hoisted structure |
US10562739B2 (en) * | 2017-08-25 | 2020-02-18 | Otis Elevator Company | Synchronized electronic safety actuator |
CN107416638A (en) * | 2017-09-19 | 2017-12-01 | 西继迅达(许昌)电梯有限公司 | A kind of lift brake safety clamp |
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CN110356944B (en) * | 2018-03-26 | 2021-08-03 | 上海三菱电梯有限公司 | Elevator brake device |
CN110356945B (en) * | 2018-03-26 | 2021-03-16 | 上海三菱电梯有限公司 | Wear detection device for linear motion assembly and elevator brake device |
CN111170114B (en) * | 2018-11-13 | 2021-05-25 | 上海三菱电梯有限公司 | Quick response elevator arresting gear and elevator |
US12134543B2 (en) * | 2018-12-21 | 2024-11-05 | Inventio Ag | Elevator system arrangement having an elevator brake device |
DE202019101479U1 (en) * | 2019-03-15 | 2020-06-18 | Inventio Ag | Safety brake device |
WO2021063631A1 (en) * | 2019-09-30 | 2021-04-08 | Inventio Ag | Brake device |
CN110733954A (en) * | 2019-10-16 | 2020-01-31 | 镇江朝阳机电科技有限公司 | high-stability elevator safety tongs |
RU2718706C1 (en) * | 2019-11-07 | 2020-04-14 | Акционерное общество "Щербинский Лифтостроительный Завод" | Catcher |
EP3831759A1 (en) * | 2019-12-02 | 2021-06-09 | Inventio AG | Device for guiding and braking a vehicle body of a lift system to be displaced along a guide rail |
NL2025442B1 (en) * | 2020-04-28 | 2021-11-09 | Otolift Trapliften B V | Overspeed governor for a stairlift |
EP3995431A1 (en) * | 2020-11-06 | 2022-05-11 | Otis Elevator Company | Adjustable force safety brakes |
CN114084769A (en) * | 2021-12-08 | 2022-02-25 | 陕西省特种设备检验检测研究院 | Elevator load test safety protection device and method |
CN115092789B (en) * | 2022-08-25 | 2022-11-11 | 河南起升智能科技有限公司 | Accidental movement prevention device, accidental movement prevention assembly and elevator |
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-
2013
- 2013-11-15 CN CN201380071050.2A patent/CN104936882B/en active Active
- 2013-11-15 JP JP2015543397A patent/JP6181768B2/en not_active Expired - Fee Related
- 2013-11-15 ES ES13792363T patent/ES2711448T3/en active Active
- 2013-11-15 CN CN201380061300.4A patent/CN104812689B/en active Active
- 2013-11-15 BR BR112015011997-2A patent/BR112015011997B1/en active IP Right Grant
- 2013-11-15 CA CA2891747A patent/CA2891747C/en not_active Expired - Fee Related
- 2013-11-15 AU AU2013351430A patent/AU2013351430B2/en not_active Ceased
- 2013-11-15 WO PCT/EP2013/073990 patent/WO2014082877A1/en active Application Filing
- 2013-11-15 KR KR1020157017130A patent/KR102128638B1/en active IP Right Grant
- 2013-11-15 WO PCT/EP2013/073997 patent/WO2014082878A1/en active Application Filing
- 2013-11-15 EP EP13792363.7A patent/EP2925654B1/en active Active
- 2013-11-15 KR KR1020157017129A patent/KR102113895B1/en active IP Right Grant
- 2013-11-15 MX MX2015006593A patent/MX358850B/en active IP Right Grant
- 2013-11-15 MX MX2015006627A patent/MX363590B/en unknown
- 2013-11-15 CA CA2892539A patent/CA2892539C/en not_active Expired - Fee Related
- 2013-11-15 EP EP13798965.3A patent/EP2925655B1/en active Active
- 2013-11-15 US US14/647,546 patent/US9663326B2/en active Active
- 2013-11-15 BR BR112015012174-8A patent/BR112015012174B1/en active IP Right Grant
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- 2013-11-15 AU AU2013351429A patent/AU2013351429B2/en active Active
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2015
- 2015-05-19 PH PH12015501107A patent/PH12015501107B1/en unknown
- 2015-05-25 PH PH12015501158A patent/PH12015501158A1/en unknown
- 2015-11-11 HK HK15111114.1A patent/HK1210453A1/en not_active IP Right Cessation
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2016
- 2016-02-15 HK HK16101617.3A patent/HK1213538A1/en unknown
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