JP5088214B2 - Rope brake unit for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rope brake unit for an elevator capable of obtaining proper braking force according to a situation of load in a car, putting a brake with a proper braking distance, and reducing inertia force acting on a passenger in the car being braked. <P>SOLUTION: This rope brake unit for the elevator disposed between a driving sheave of a driving machine and a deflector sheave, and obtaining braking force by gripping a rope hung between the driving sheave and the deflector sheave, comprises a plurality of brake blocks having rope brake main bodies, and the rope brake body of the brake block can be individually independently operated regardless of an operating state of the rope brake body of the other brake block. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an elevator rope brake unit.

In recent years, each law and user has become aware of the use of multiple brake devices for the safety of the users in the car when the car is moving upward. As one of such brake devices, there is a rope brake device that directly grips a rope such as a main rope and stops the car.
In a conventional elevator rope brake unit, a driving device having a driving sheave and a driving device main body for rotating the driving sheave, a main rope wound around the driving sheave, and one side with respect to the driving sheave The car is suspended in the hoistway by the main rope, and is lifted and lowered in the hoistway by the driving force of the driving device, and on the other side of the drive sheave by the main rope in the hoistway. A balance weight that is suspended and lifted up and down in the hoistway by the drive force of the drive device, at a position between the drive sheave and the sorase wheel on the balance weight side of the drive sheave, A rope brake that prevents the car from being lifted by the driving device by gripping the main rope when the counterweight moves below the normal lifting stroke. What location is provided it is known (e.g., see Patent Document 1).
An elevator provided with a rope brake between the drive sheave and the drive wheel, wherein the drive sheave is rotationally driven and fixed on a machine bed, and the winder and the drive wheel are installed in a machine room. And a support for supporting the hoisting machine so that the machine bed is separated from the solar wheel. It is known (see, for example, Patent Document 2).

International Publication No. WO 2004/073325 JP 2007-204238 A

However, in conventional elevator rope brake units, as shown in Patent Literature 1 and Patent Literature 2, the main rope wound around the drive sheave is gripped by one braking device (rope brake). Because the structure prevents the car from rising, the force with which the braking device grips the main rope is the same regardless of the load condition in the car, and it depends on the load balance with the car and the balance weight. There is a problem that the braking force and the inertial force acting on passengers in the car at the time of braking differ.
In other words, under a condition where the braking force of the braking device is constant, if the load balance between the car and the counterweight is large, there is a risk that the braking distance will be increased due to insufficient braking force. If the load balance between the car and the counterweight is small, the braking force is too large, and a large inertial force may be applied to the car during braking.

  Also, in a conventional elevator, during maintenance work, replacement is performed in the state in which the main rope such as a sheave and a gear is wound around the sheave during the maintenance work. When exchanging difficult parts, etc., fix the car or counterweight so that it does not move up and down, remove the hanging load on the main rope, remove the main rope from winding, Since it is necessary to perform maintenance work, there is a problem that the work takes a long time.

The present invention has been made to solve the above-described problems. A first object of the present invention is to obtain an appropriate braking force depending on the load state in the car, and to perform braking with an appropriate braking distance. It is possible to obtain an elevator rope brake unit that can reduce the inertial force acting on passengers in the car during braking.
In addition, the second purpose is an elevator rope that can also be used as a jig that can improve the efficiency of work when it is necessary to unwind the main rope during maintenance work. Get the brake unit.

  In the elevator rope brake unit according to the present invention, a braking force is provided by gripping a rope that is disposed between the drive sheave of the drive machine and the wheel of the driving wheel, and is wound around the drive sheave and the wheel of the driving wheel. A rope brake unit comprising a plurality of brake blocks having a rope brake body, wherein the rope brake body of the brake block is independently independent of the operating state of the rope brake body of other brake blocks. To be operable.

  The present invention relates to a rope brake unit for an elevator, which is disposed between a drive sheave of a drive machine and a wheel of a driving wheel, and obtains a braking force by gripping a rope wound around the driving sheave and the wheel of the driving wheel. A brake unit comprising a plurality of brake blocks having a rope brake body, wherein the rope brake body of the brake block operates independently and independently of the operating state of the rope brake body of other brake blocks By adopting such a configuration, it is possible to obtain an appropriate braking force depending on the load condition in the car, it is possible to brake at an appropriate braking distance, and to passengers in the car at the time of braking. There is an effect that the working inertial force can be reduced.

  The present invention will be described with reference to the accompanying drawings. Throughout the drawings, the same reference numerals indicate the same or corresponding parts, and redundant description thereof will be simplified or omitted as appropriate.

Embodiment 1 FIG.
FIGS. 1 to 9 relate to Embodiment 1 of the present invention. FIG. 1 is a schematic diagram showing the entire hoistway and machine room. FIG. 2 is a front view of a rope brake unit, a drive unit, and a solar car. 3 is a side view of the rope brake unit, the drive unit, and the wheel drive vehicle, FIG. 4 is a plan view of a brake block constituting the rope brake unit, FIG. 5 is a cross-sectional view cut along a section AA in FIG. FIG. 7 is a plan view of the rope brake unit, FIG. 8 is a sectional view cut along a section BB in FIG. 7, and FIG. 9 is a side view of the rope brake unit. .
In the figure, a machine room 2 is provided on the elevator hoistway 1, and a drive machine 4 is placed on a pair of drive machine bases 3 provided in the machine room 2.
The drive sheave 5 of the drive machine 4 has a gear case 6 that transmits the rotational drive of the drive machine 4 to the drive sheave 5 and one end of the rotational shaft of the drive sheave 5 above the pair of drive machine bases 3. It arrange | positions so that it may be located between the bearing stands 7 supported rotatably.
A rope 8 is wound around the drive sheave 5 of the drive machine 4, and one end of the rope 8 passes between the pair of drive machine bases 3 and can be raised and lowered in the hoistway 1. Is connected to the car 9. Then, the other end of the rope 8 is passed between the pair of drive machine bases 3 and is wound around a solar wheel 10 which is rotatably disposed between the pair of drive machine bases 3. Above, a counterweight 11 is connected in the hoistway 1 so as to be movable up and down. A scale device 9 a for detecting a load in the car 9 is attached under the floor in the car 9.

A rope brake unit 15 for braking by gripping the rope 8 when necessary is disposed between the drive sheave 5 and the wheel 10, and this rope brake unit 15 is shown in FIGS. 4 to 6. A plurality of brake blocks 16 having the same shape and configuration as shown are connected.
The brake block 16 includes a rope brake main body 17 having a pair of brake shoes 17a for gripping the rope 8 when necessary, and the rope 8 is passed between the pair of brake shoes 17a when installed. The force of gripping the rope 8 of the brake shoe 17a is constant.
On both sides of the rope brake body 17, first connecting plates 18 a arranged in parallel with the longitudinal direction of the rope 8 that is passed through the pair of brake shoes 17 a are attached. Here, these first connecting plates 18a are attached in a state where each protrudes from one side in the longitudinal direction of the rope 8 passed through the pair of brake shoes 17a. A protrusion 19a is formed. The first protrusion 19a is provided with a first connecting hole 20a.
Further, on the side of the first connecting plate 18a opposite to the rope brake body, a second connecting plate 18b disposed in parallel with the longitudinal direction of the rope 8 passed through the pair of brake shoes 17a is attached. ing. And these 2nd connection plates 18b are attached in the state which each protruded in the other side of the longitudinal direction of the said rope 8 penetrated by a pair of said brake shoes 17a, and this protrusion part is 2nd protrusion. It becomes part 19b. A second connection hole 20b is formed in the second protrusion 19b.

The brake blocks 16 are provided on the first protrusion 19a provided on the first connection plate 18a of one brake block 16 and the second connection plate 18b of the other brake block 16. In addition, the second protrusions 19b are overlapped with each other, and the first connecting hole 20a and the second connecting hole 20b are connected to each other so as to be rotatable by passing the connecting pin 21. The rope brake unit 15 is configured (FIGS. 7 to 9).
Here, the first projecting portion 19a and the second projecting portion 19b are formed in a substantially trapezoidal shape in which the upper bottom is disposed on the tip side and the lower bottom is disposed on the rope brake body 17 side, The center positions of the first connecting hole 20a and the second connecting hole 20b are respectively one end of the tips of the first projecting portion 19a and the second projecting portion 19b (that is, the upper base side of the substantially trapezoidal shape). It is arrange | positioned in the same height position as the vertex position which forms a part.
When the brake blocks 16 connected to each other are arranged in a substantially straight line, the tip of the first protrusion 19a is on the side opposite to the first protrusion of the first connection plate 18a. The tip of the second protrusion 19b abuts against the second protrusion on the side of the second connecting plate 18b, so that the brake blocks 16 rotate only in one direction from a substantially linear shape. The brake blocks 16 are restricted from rotating from the substantially straight shape to the other direction.
The rope brake main body 17 provided on the brake blocks 16 is controlled to operate independently regardless of the operation status of the rope brake main bodies 17 provided on the other brake blocks 16. Can do.

The rope brake unit 15 configured by connecting a plurality of the brake blocks 16 having the same shape and configuration in this manner is disposed between the drive sheave 5 and the solar wheel 10 as follows. The
That is, an attachment beam support portion 6a is provided on the drive sheave 5 side of the gear case 6, and an upper attachment beam 12 extends toward the solar vehicle 10 side on the attachment beam support portion 6a. It is installed. Further, an upper mounting beam 12 extends from the bearing stand 7 toward the side of the solar wheel 10. Then, after the first projecting portion 19a of the brake block 16 forming one end of the rope brake unit 15 is superimposed on the end portion of the upper wheel 10 of the upper mounting beam 12, the connecting pin 21 It is pivotally connected.
Further, a lower mounting beam 13 is provided near the side of the wheel 10 on the upper surfaces of the pair of drive bases 3, and the second of the brake block 16 that forms the other end of the rope brake unit 15. The protruding portion 19b is rotatably connected to the lower mounting beam 13 via the mounting portion 14.
The rope 8 is passed between the brake shoes 17 a of all the brake blocks 16 constituting the rope brake unit 15 and is then wound around the drive sheave 5 and the wheel 10.
The rope brake unit 15 is restricted so that the side on which the brake blocks 16 can rotate from a substantially linear shape is downward, and the brake blocks 16 cannot rotate from a substantially linear shape. It arrange | positions so that the side may be located in an upper side.
That is, when viewed from one of the adjacent brake blocks 16, the other brake block 16 can rotate only from the position along the rope 8 to the lower side, and one of the adjacent brake blocks 16 can be rotated. When viewed from the side, the other brake block 16 cannot rotate upward from the position along the rope 8.

  In the elevator rope brake unit configured as described above, for example, when an elevator control panel (not shown) detects an abnormality or the like of the car 9, the scale device 9 a of the car 9 causes the car 9 to move inside the car 9. Detect the load. When the load in the car 9 is the maximum load, the rope brake main bodies 17 of all the brake blocks 16 constituting the rope brake unit 15 are operated, and the load in the car 9 is When the load is less than the maximum load, among the brake blocks 16 constituting the rope brake unit 15, the rope brake main bodies 17 of the number of the brake blocks 16 corresponding to the load in the car 9 are operated. Let

In the elevator rope brake unit configured as described above, in order to appropriately change the number of brake blocks that operate the rope brake body, among the brake blocks that constitute the rope brake unit, according to the load in the car. Appropriate braking force can be obtained depending on the load condition in the car, it is possible to brake at an appropriate braking distance, and the inertial force acting on passengers in the car during braking can be reduced. .
In addition, since the rope brake unit is configured by connecting a plurality of brake blocks having the same shape and configuration, by increasing or decreasing the number of brake blocks to be connected, it is possible to connect between various drive sheaves and Solace vehicles. It is possible to accommodate distance dimensions.
Furthermore, the rope brake unit is provided with a protrusion on the connecting plate so that the brake blocks can be rotated only in one direction from a substantially linear shape and cannot be rotated in the other direction. By disposing the block so that the blocks are prevented from rotating from a substantially straight line so that the side that is regulated is positioned on the upper side, the brake block disposed at the center portion of the rope brake unit is caused by its own weight. It is possible to prevent the rope brake unit from being disposed in a bow shape as a whole by dropping downward.

In addition, since the rope brake unit is configured by connecting brake blocks having the same shape and the same configuration, when a failure occurs in some brake blocks, only the brake block in which the failure occurs is replaced. This is advantageous in that it can be handled, and the rope brake unit can be easily disassembled into brake blocks, so that it can be easily transported and transported during installation and dismantling operations.
Further, since the brake block has the same shape and the same configuration, it is advantageous in that it is possible to improve efficiency in the production process of the rope brake unit.

Embodiment 2. FIG.
FIGS. 10 to 12 relate to the second embodiment of the present invention, FIG. 10 is a front view showing a state before the rope is lifted using the rope brake unit, and FIG. 11 is a rope lifting using the rope brake unit. FIG. 12 is a main part enlarged view showing a state of a plurality of ropes suspended using a rope brake unit.
In the second embodiment described here, in addition to the configuration of the first embodiment described above, a detachable suspension bolt is provided on the brake block.
That is, each brake block 16 constituting the rope brake unit 15 is provided with a suspension bolt screw hole 23 that is screwed with a thread portion threaded on the other end of the suspension bolt 22 having an annular portion at one end. It has been. Here, the suspension bolt screw hole 23 is provided on the side where the brake blocks 16 are restricted so that they cannot rotate from a substantially linear shape.
Other configurations are the same as those in the first embodiment.

When performing an operation that requires unwinding of the main rope during maintenance work, first, the suspension bolt 22 is screwed into the suspension bolt screw hole 23 provided in each brake block 16. (FIG. 10).
Next, the rope brake main body 17 is operated and the rope 8 is gripped by the brake shoe 17a, thereby fixing the rope brake unit 15 and the rope 8.
Then, after releasing the connection between the rope brake unit 15 and the upper mounting beam 12 and the lower mounting beam 13, for example, by using the annular portion of the suspension bolt 22 by a hanging tool 24 such as a chain block, The rope 8 is lifted together with the rope brake unit 15, and the rope 8 is unwound from the drive sheave 5.

Note that when the rope brake unit 15 and the rope 8 are fixed by operating the rope brake body 17 and gripping the rope 8 by the brake shoes 17a, all the rope brake units 15 are configured. The rope brake main body 17 of the brake block 16 may be operated, and a part of the number of the brake blocks necessary for lifting the rope 8 out of the brake blocks 16 constituting the rope brake unit 15. After operating only the 16 rope brake main bodies 17 and lifting the rope 8 by the lifting device 24, the rope brake main bodies 17 of all the brake blocks 16 constituting the rope brake unit 15 are used as a safety measure. Can also be activated
The suspension bolts 22 are provided on the side where the brake blocks 16 are restricted so that they cannot rotate from a substantially straight shape, and the brake blocks 16 are moved from a substantially straight shape to the opposite suspension bolt side. When the rope 8 is lifted, as shown in FIGS. 11 and 12, the rope 8 is lifted with the rope brake unit 15 as a whole bent gently.

In the elevator rope brake unit configured as described above, in addition to being able to achieve the same effects as in the first embodiment, a suspension bolt is detachably provided on the brake block. It can also be used as a jig that can improve the efficiency of work that requires unwinding of the main rope.
In addition, the brake blocks can rotate from the substantially straight shape to the anti-suspending bolt side, and when the rope is lifted, the rope is lifted with the rope brake unit being bent gently as a whole, so the lifted rope is the rope It is possible to prevent the brake unit from being broken at the end of the brake unit.
In addition, the lifting tool used in the lifting work of the rope is not limited to one, and a lifting tool such as a plurality of chain blocks can be used as shown in FIG.

Embodiment 3 FIG.
FIG. 13 relates to Embodiment 3 of the present invention, and is a front view of a rope brake unit, a driving machine, and a sorase vehicle.
In the third embodiment described here, in addition to the configuration of the first or second embodiment described above, a cover is provided at the connecting portion between the brake blocks constituting the rope brake unit. .
That is, the connecting portion between the brake blocks 16 constituting the rope brake unit 15 includes the first projecting portion 19a of the first connecting plate 18a and the second connecting portion of the second connecting plate 18b. A cover 25 is attached so as to cover the protrusion 19b to prevent the entry of foreign matter, and the other configurations are the same as those in the first or second embodiment.

  In the elevator rope brake unit configured as described above, the same effects as those of the first embodiment or the second embodiment can be obtained. Since the cover is provided at the connecting portion, it is possible to prevent foreign matters from being caught in the connecting portion between the brake blocks when each brake block is rotated.

It is a schematic diagram which shows the whole hoistway and machine room in Embodiment 1 of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a rope brake unit, a drive machine, and a wheel drive vehicle according to Embodiment 1 of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a rope brake unit, a drive machine, and a wheel drive vehicle according to Embodiment 1 of the present invention. It is a top view of the brake block which comprises the rope brake unit in Embodiment 1 of this invention. It is sectional drawing cut | disconnected by the cross section AA in FIG. 4 in Embodiment 1 of this invention. It is a side view of the brake block which comprises the rope brake unit in Embodiment 1 of this invention. It is a top view of the rope brake unit in Embodiment 1 of this invention. It is sectional drawing cut | disconnected by the cross section BB in FIG. 7 in Embodiment 1 of this invention. It is a side view of the rope brake unit in Embodiment 1 of this invention. It is a front view which shows the state before lifting of the rope which uses the rope brake unit in Embodiment 2 of this invention. It is a front view which shows the state during the lifting of the rope which uses the rope brake unit in Embodiment 2 of this invention. It is a principal part enlarged view which shows the state of multiple suspension of the rope which uses the rope brake unit in Embodiment 2 of this invention. It is a front view of a rope brake unit, a drive machine, and a solar wheel in Embodiment 3 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Machine room 3 Drive machine base 4 Drive machine 5 Drive sheave 6 Gear case 6a Mounting beam support part 7 Bearing stand 8 Rope 9 Car 9a Weighing device 10 Solenoid car 11 Balance weight 12 Upper mounting beam 13 Lower mounting beam 14 Installation Part 15 Rope brake unit 16 Brake block 17 Rope brake body 17a Brake shoe 18a First connection plate 18b Second connection plate 19a First projection 19b Second projection 20a First connection hole 20b Second connection Hole 21 Connection pin 22 Suspension bolt 23 Suspension bolt screw hole 24 Suspension tool 25 Cover

Claims (9)

A rope brake unit disposed between a drive sheave of a drive machine and a wheel drive wheel to obtain a braking force by gripping a rope wound around the drive sheave and the wheel drive wheel,
A plurality of brake blocks having a rope brake body;
The rope brake unit for an elevator, wherein the rope brake main body of the brake block can be operated independently and independently of the operating state of the rope brake main body of the other brake block.   Of the rope brake bodies of the plurality of brake blocks, the number of the rope brake bodies to be operated depends on the load situation in the car that is connected to one end of the rope and can be raised and lowered in the elevator hoistway. It changes, The rope brake unit for elevators of Claim 1 characterized by the above-mentioned.   The elevator brake according to claim 1, wherein the plurality of brake blocks are connected to each other and arranged along the rope between the drive sheave and the solar wheel. Rope brake unit.   The elevator brake brake unit according to any one of claims 1 to 3, wherein the plurality of brake blocks have the same shape and the same configuration. The brake block is
A first connecting plate attached to each side of the rope brake body;
A first protrusion formed at one end of the first connecting plate;
A first connecting hole formed in the first protrusion,
A second connecting plate attached to each of the first connecting plates on the side opposite to the rope brake body;
A second protrusion formed on an end of the second connection plate opposite to the side on which the first protrusion is formed on the first connection plate;
A second connecting hole formed in the second protrusion,
The plurality of brake blocks are configured such that the first protrusion of one of the brake blocks and the second protrusion of the other brake block are overlapped, and the first connection hole and the first The elevator rope brake unit according to claim 4, wherein the elevator rope brake units are connected to each other by passing a connecting pin through the two connecting holes. The brake blocks constituting both ends of the brake unit are connected to a fixed body in the hoistway,
4. The plurality of brake blocks, wherein the brake blocks are non-rotatably connected to each other upward in a state where the brake blocks are disposed between the drive sheave and the solar wheel. The rope brake unit for elevators in any one of Claims 5.   7. The brake block according to claim 1, further comprising a suspension bolt having an annular portion at one end on an upper side in a state where the brake block is disposed between the drive sheave and the solar wheel. The elevator rope brake unit according to any one of the above.   The plurality of brake blocks are connected to each other so that the brake blocks can rotate downward from a position along the rope in a state where the brake blocks are disposed between the drive sheave and the solar wheel. The elevator rope brake unit according to claim 7.   The elevator rope brake unit according to any one of claims 1 to 8, wherein a cover is provided between each of the brake blocks.

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