EP2295696B1 - Sectional gate - Google Patents

Description

THE iNVENTION field

The invention relates to the construction of devices that cover breakthroughs in building structures.

State of the art

• einem Torblatt aus aneinander angelenkten Platten, deren Stirnflächen in L-Führungsschienen angeordnet sind,
• einer im oberen Teil des Tors angeordneten Welle, die parallel zu den Plattenebenen liegt, durch Endtragkonsolen unterstützt wird und mit einem Antrieb verbunden ist, und
• mindestens eine Drehstabvorrichtung mit Torsionsfedern bekannt,
  wobei:
• die Torsionsfedern auf die Antriebswelle an den Wellenstumpfen aufgeschoben sind,
• die Torsionsfedern mit jeweils einem ihrer Enden an der Antriebswelle befestigt sind,
• die Welle mit Seiltrommeln ausgerüstet ist, die an Wellenstümpfen mittels Übergangsstücken befestigt sind,
• die Seile mit der unteren und/oder der oberen Torplatte verbunden sind, und
• die Antriebswelle als Hohlzylinderwelle ausgebildet ist.

By WO 03/091529 A1 is a sectional door with:

• a door leaf of plates hinged to one another, whose end faces are arranged in L guide rails,
• arranged in the upper part of the door shaft, which is parallel to the plate planes, is supported by Endtragkonsolen and connected to a drive, and
• at least one torsion bar device with torsion springs known
  in which:
• the torsion springs are pushed onto the drive shaft at the stub shaft,
• the torsion springs are fastened to the drive shaft at one of their ends,
• the shaft is equipped with cable drums attached to stub shafts by means of transition pieces,
• the ropes are connected to the lower and / or the upper gate plate, and
• the drive shaft is designed as a hollow cylinder shaft.

A sectional door is also known, which contains a door leaf of plates hinged to each other. The faces of these plates are used in L-guides (rails). The upper plate is hinged to a spindle. The spindle is attached to a handlebar that is perpendicular to the plane of the plate. This construction of the sectional door requires an increased overall height of the building at the door mounting point. It also causes the off-center Load transfer to the handlebar increased wear of the spindle-nut pair. The stroke speed of this gate is quite low.

From the patent CN 1646785, 2005 , another construction of a sectional door is known. It contains hinged plates, L-rails and an adjustment drive of the plates. At the end face of the drive shaft a Seilaufwickeltrommel is constructed, which is coupled to a locking gear.

Another known sectional door includes a door leaf of hinged plates. The plate end faces are arranged in vertical or horizontal guide rails. The drive shaft is arranged in the upper part of the door. It has symmetrically arranged torsion springs. The drive shaft is connected to cable drums. The cable drum is formed on the drive side of two sections. One of the sections is used to wind up the rope strand and the other to unwind the rope ( US 4472910, 1984 ).

Among the known sectional doors is also the sectional door from the PCT Application WO 99/64706, 1999 that comes closest to the present invention. It contains a door leaf of panels hinged to each other. The faces of the plates are arranged in vertical or horizontal guide rails. A hollow shaft is arranged in the upper part of the door parallel to the plate planes. It is supported by consoles. The hollow shaft is connected to a drive. The hollow shaft contains cable drums, which are connected to the lower gate plate. The hollow shaft also contains torsion springs (torsion bars), which are mounted on the stub shafts and secured by coupling halves.

The known sectional doors reveal no solution to a major problem that usually arises in the operation of sectional doors, namely the deflection of the shaft under the emphasis of the spring and the slack of the spring itself.

These deformations cause frictional phenomena. This causes a substantial increase in the force that must be used to open or close the door leaf. The wear of the entire device is also greatly increased.

• einem Torblatt aus aneinander angelenkten Platten, deren Stirnflächen in Führungsschienen angeordnet sind,
• einer im oberen Teil des Tors angeordneten Welle, die parallel zu den Plattenebenen liegt, durch Endtragkonsolen unterstützt wird und mit einem Antrieb verbunden ist, und
• mindestens eine Drehstabvorrichtung mit Torsionsfedern bekannt, wobei:
• die Torsionsfedern auf die Antriebswelle an den Wellenstumpfen aufgeschoben sind,
• die Torsionsfedern mit jeweils einem ihrer Enden an der Antriebswelle befestigt sind,
• die Welle mit Seiltrommeln ausgerüstet ist, die an Wellenstümpfen befestigt sind,
• die Seile mit dem Tor verbunden sind,
• die Antriebswelle als Hohlzylinderwelle ausgebildet ist, und
• die Welle im Querschnitt einen nicht runden oder einen polygonalen, beispielsweise sechseckigen Außenumfang aufweist.

By WO 90 / 15216A1 is a sectional door with:

• a door leaf of plates hinged to one another, whose end faces are arranged in guide rails,
• arranged in the upper part of the door shaft, which is parallel to the plate planes, is supported by Endtragkonsolen and connected to a drive, and
• at least one torsion bar device with torsion springs is known, wherein:
• the torsion springs are pushed onto the drive shaft at the stub shaft,
• the torsion springs are fastened to the drive shaft at one of their ends,
• the shaft is equipped with cable drums attached to stub shafts,
• the ropes are connected to the gate,
• the drive shaft is designed as a hollow cylinder shaft, and
• the shaft in cross section has a non-round or a polygonal, for example, hexagonal outer periphery.

Disclosure of the invention

The technical object of the present invention is to increase its reliability in a sectional door, and in that in the construction of the torsion bar device, an octagonal shaft is used, which has a high rigidity. The increased strength and stiffness of the octagonal shaft compared to the conventional, structural design even prevents their sagging in wide openings. Consequently, intermediate support brackets, connection couplings, or installation of steel tubing for high and vertical low shaft assembly strokes are eliminated. Also, no mounting of a system of mounting brackets at a low stroke of the drum from the rear is required. The entire assembly time is reduced. The assembly of the torsion bar device in height is also no longer required.

In addition, the proposed construction of the torsion bar device can be assembled both at the factory and at the construction site. This is possible because the torsion springs, spring break guards and rope drums are mounted on the shaft. As a result, the mounting security is significantly increased. It also becomes possible to accurately align the shaft with the springs, regardless of the opening curvature and unevenness of the stop. The torsion bar device no longer needs a connection to the guide rail system. This makes it possible to adjust both the torsion bar device and the rails independently. The reworking of the opening on the site for the purpose of attaching additional consoles and springs deleted.

The Asked technical problem is solved with the features of claim 1.

The sectional door contains a door leaf of plates hinged to each other. Their faces are used in L-guide rails. The sectional door also has a shaft in the upper part of the door. The shaft lies parallel to the plate planes and is supported by Endtragkonsolen. The shaft is connected to a drive. The shaft is equipped with cable drums attached to stub shafts by means of transition pieces. The ropes are connected to the bottom plate of the gate. The sectional door further includes torsion bar torsion bar devices. The torsion springs are pushed onto the drive shaft at their stumps. The ends of the torsion springs are attached to the drive shaft. The drive shaft is designed as a solid shaft with a round cross-section. It has keyways in places for attachment of transition pieces for the drums. The center of the shaft is octagonal in cross-section of cold-rolled steel construction profile. The torsion angle of the spring groove to ensure a uniform rope tension during the door movement is max. 10 ° over the entire length of the torsion bar device. The slack between any two support points of the shaft does not exceed 1/600 of the length of the torsion bar device. In addition, the drive shaft on the walls with max. two brackets (straps) attached. In this case, bearing groups are used to ensure their axial alignment during the shaft rotation. The octagonal part of the wave is formed in several parts over the wavelength. It is provided with a shaft coupling. The coupling is formed from two or four sheet metal sections, which are screwed together at the crimping points. At least one of the pieces of each of these plate sections adjoining the shaft is screwed to the shaft in the region between the flanges. The sectional door is equipped with Endtragkonsolen to rearrange the shaft. The Endtragkonsolen have two attachment points for attachment to the ceiling. Here are these attachment points each other at an angle of 90 ° to distribute the resulting transverse and longitudinal loads evenly. The torsion bar device is completely mounted on the Endtragkonsolen. The safety devices are attached to the end support brackets. Each Endtragkonsole has some fixed positions for attachment of the shaft. The sectional door is provided with Endtragkonsolen for frontal arrangement of the shaft. To ensure the attachment of the end support brackets to the installation site, their design provides for the possibility of free deployment, including vertical or lateral displacement of the end support brackets without the need to move other door components.

In addition, the sectional door can be provided with end support brackets for deep shaft assembly. The carrying capacity of each Endtragkonsolen is at least 600kg. The possibility of arranging the end support brackets in pairs is provided to secure the multi-roll turntable device. It is also the possibility of a vertical arrangement of the consoles provided to each other, so that their mutual support is ensured in a plane by means of a dovetail connection and thus positioning in the center distance is secured with an accuracy of ± 1mm. The torsion springs of the torsion bar devices have a movable conclusion. The degree consists of two components, namely: an actual end piece and a shaft lock. The shaft lock can reduce the internal stresses and the friction between the turns and has the ability to limit the free displacement along the shaft without rotation. The actual, movable end piece is locked to the shaft lock by means of grooves with an accuracy of ¼ turn to ensure the possibility of adjusting the torsion bar device for gate compensation at any time, the number of revolutions is changed in the spring tension. An additional securing of the movable end of the shaft lock takes place by means of adjusting screws. In addition to grooving, this avoids the possibility that the closure will be torn off the shaft lock.

Brief description of the drawings

• Fig. 1 ein Übersichtsbild (Transportschema) der Vormontage einer Ausführungsform der erfindungsgemäßen Oktagonalwelle,
• Fig. 2 ein Detail der Oktagonalwelle mit einer Längsnut über die gesamte Länge für den Längskeil,
• Fig. 3 einen Verbinder für die Oktagonalwelle,
• Fig. 4 eine Endtragkonsole für eine frontale Wellenanordnung,
• Fig. 5 eine Endtragkonsole für eine hintere Wellenanordnung,
• Fig. 6 eine Endtragkonsole für eine tiefe Wellenanordnung,
• Fig. 7 einen beweglichen Abschluss und
• Fig. 8 einen beweglichen Abschluss komplett auf der Welle.

The invention will now be explained in more detail with reference to exemplary embodiments. Show it:

• Fig. 1 an overview image (transport scheme) of the pre-assembly of an embodiment of the octagonal wave according to the invention,
• Fig. 2 a detail of the octagonal wave with a longitudinal groove over the entire length for the longitudinal wedge,
• Fig. 3 a connector for the octagonal wave,
• Fig. 4 an end support bracket for a frontal shaft assembly,
• Fig. 5 an end support bracket for a rear shaft assembly,
• Fig. 6 an end support bracket for a deep shaft assembly,
• Fig. 7 a mobile degree and
• Fig. 8 a movable conclusion completely on the shaft.

Best embodiment of the invention

The sectional door contains a door leaf of plates hinged to each other (not shown). The plate end faces are arranged in L-guide rails (not shown). The sectional door also includes a located in the upper part of the gate Drive shaft 2. The drive shaft 2 is parallel to the plate planes, is supported by Endtragkonsolen 1 and is connected to a drive. The shaft 2 is equipped with cable drums 4 which are fixed to stub shafts by means of transition pieces 3. The ropes are connected to the lower and / or upper gate plate. The sectional door also has torsion bar devices 5 with a torsion spring which are slid onto the drive shaft 2 at the stub shafts and fixed to the shaft with one of their ends at a time. The drive shaft 2 is formed as a hollow cylinder shaft, each with a spring groove 6 at the attachment points of the transition pieces 3 for drums 4. The middle of the shaft 2 is formed in its cross section octagonal cold-rolled steel construction profile. The torsion angle of the spring groove 6 to ensure a uniform cable tension during door movement is max.10 ° over the entire length of the torsion bar device. The slack between any two support points of the shaft does not exceed 1/600 of the length of the torsion bar device. The drive shaft 2 is connected to the walls by means of max. two supports 1 with bearing groups 7 attached to ensure their axial alignment during rotation of the shaft. The octagonal. Part of the shaft is formed in several parts along its length ( Fig. 1 ). It is provided with a shaft coupling 8. The shaft coupling 8 is formed from two or four sheet sections, which are bolted together at crimping points. At least one of the pieces adjacent to the shaft of each of these sheet metal sections is in the area between the flanges ( Fig. 3 ) screwed to the shaft 2. The sectional door with Endtragkonsolen 9 and 10 ( Fig. 5 ) for the rear shaft assembly. The Endtragkonsolen 9 and 10 each have two attachment points for attachment to the ceiling. These attachment points are rotated by 90 ° to each other to distribute the resulting transverse and longitudinal loads evenly. The torsion bar device is completely mounted on the Endtragkonsolen. Safety devices 11 are attached to the Endtragkonsolen. Each Endtragkonsole has some fixed positions for the shaft attachment. The sectional door is equipped with end support brackets for a frontal shaft arrangement. To ensure the Attachment of the end support brackets to a suitable mounting site provides for the design of the consoles the possibility of a freestanding, including a vertical displacement or a side shift of Endtragkonsolen without other door components must be moved. In addition, the sectional door may be provided with end support brackets for a deep shaft assembly 15 (FIG. Fig. 6 ). The load capacity of each Endtragkonsole is at least 600kg. In this case, the possibility of a pair arrangement of the Endtragkonsolen is provided to fasten a Mehrwalzendrehstabvorrichtung. It is also the possibility of a vertical arrangement of the consoles provided to each other so that their mutual support in a plane by means of dovetail connections 12 (FIG. Fig. 6 ) and the positioning in the center distance is ensured with an accuracy of ± 1mm. The torsion springs of the torsion bar devices have a movable conclusion. The conclusion consists of two components, namely an actual end piece 13 and a shaft lock 14. The shaft lock can reduce the internal stresses and the friction between turns and has the ability to limit the free displacement along the shaft without rotation. The movable end 13 is secured to the shaft lock 14 by means of grooves with an accuracy of ¼ revolution in order to ensure the possibility of adjusting the torsion bar device for gate compensation at all times, wherein the number of revolutions is changed in the spring tension. An additional securing of the movable end of the shaft lock takes place by means of adjusting screws. In addition to groove engagement, this avoids the possibility of demolishing the shaft lock completion.

In the following, the main steps for the assembly of the shaft 2 will be described.

The octagonal wave 2 is arranged horizontally. The shaft locks 14 of the movable spring terminations and plastic rings are pushed onto the shaft 2. Transition pieces 3 are inserted at the end faces of the shaft 2 so that the disc wall of the transition piece with the end face of the shaft 2 is flush. Subsequently, a distance of 15-20mm to the edge of the shaft 2 must be marked to mark the location for mounting a first line of threaded elements, such as self-drilling screws. The metal drill screws are screwed into the shaft 2 so that they fit into the lobes of the disc of the transition piece 3. A first plastic ring is pushed through to the stop with the self-drilling screws. 255-260mm from the edge of shaft 2, a spot is marked to mark the location for mounting the second line of drilling screws. Metal drill screws are now screwed into the octagonal shaft 2. It follows a check whether the disc of the transition piece 3 has been hit. A second plastic ring is moved to the second line of self-drilling screws.

The plastic ring is fixed by means of self-drilling screws 3,8x11 for metal. All steps are repeated for the second half of the octagonal wave 2, and the coupling 8 is assembled on one half of the octagonal wave 2. The complete console has two places to attach to the ceiling. These attachment points are rotated by 90 ° to each other. This ensures a distribution of the transverse and longitudinal loads. The reliability of the attachment of the rear yardstick is ensured by two attachment points. One of them is a rectangular hole.

The arrangement of the drive shaft 2 with respect to the guide rails prevents the ropes from touching the door leaf when opening the door. The Endtragkonsolen have the ability to secure the safety devices 11. This eliminates additional consoles that would be required for the installation and attachment of the safety devices. The brackets also allow for easy installation of the entire assembled torsion bar assembly because the complete torsion bar assembly is placed on the consoles after assembly. Every console has some fixed positions for the shaft attachment. This will reduce the total number of Endtragkonsolen.

The Endtragkonsolen for a frontal shaft assembly have the possibility of free placement without any connection to other elements of the gate construction, namely, the console can be higher offset or moved to the side, without the function of the torsion bar device is affected. Thus, it is possible to attach the console to a suitable mounting site.

Each complete end support console ( Fig. 5 ) for a rear shaft assembly has two locations for attachment to the ceiling. These attachment points are rotated by 90 ° to each other. This ensures a distribution of the transverse and longitudinal loads. The reliability of the attachment of the rear yardstick is ensured by two attachment points. One of them is in the form of a rectangular hole. The arrangement of the axle shaft with respect to the guide rails, a contact between the cables and the door leaf when opening the gate is avoided.

The load capacity of the end support consoles ( Fig. 6 ) for a deep shaft arrangement is 600kg per console, so that when mounting the brackets at the edges of the openings, the torsion bar device together with the gate can reach up to 2400kg. The possibility of a vertical positioning of the brackets is ensured to each other in order to grow a multi-roll turntable device can. The consoles are clamped together by means of a dovetail joint. This prevents incorrect positioning and makes it possible to maintain the center distance with an accuracy of ± 1mm. The movable completion of the spring ( FIGS. 7 and 8 ) consists of two components, namely the actual termination and the shaft lock. The shaft lock is located on the shaft and can be moved in the longitudinal direction. However, the shaft lock can not turn on the shaft. This design is intended to reduce the internal stresses and friction between the turns that occur during operation of the torsion spring. This makes it possible to qualitatively improve the characteristics of the spring. The movable conclusion is reliably locked to the shaft by means of lock grooves with an accuracy of _1/4 of revolution. This makes it possible to easily change the number of revolutions when the spring is tensioned at any time. Thus, a fine adjustment of the torsion bar device is achieved for gate compensation.

The additional securing of the movable end of the lock is done by means of adjusting screws. In addition to the engagement in the groove thereby any possibility is avoided that the completion of the shaft lock is torn off.

Industrial Applicability

The proposed structural design has a high reliability and strength. In addition, eliminates the need to use intermediate support brackets at wide door openings. In addition, the construction is highly secure during assembly and ensures high accuracy during assembly.

Claims (7)

1. Sectional door comprising:

   - a door leaf composed of panels which are articulated to one another and the end faces of which are arranged in L-shaped guide rails,

   - a drive shaft (2) which is arranged in the upper part of the door and which lies parallel to the panel planes, is supported by end support brackets (1, 9, 10, 15) and is connected to a drive, and

   - at least one torsion bar device (5) with torsion springs,
   wherein:

   - the torsion springs are pushed onto the drive shaft (2) on the shaft stubs,

   - the torsion springs are fastened with in each case one of their ends to the drive shaft,

   - the drive shaft (2) is equipped with cable drums (4) which are fastened to the shaft stubs by means of transition pieces (3),

   - the cables are connected to the lower and/or the upper door panel, and

   - the drive shaft (2) is designed as a hollow-cylindrical shaft, characterized in that:

   - the drive shaft (2) is formed with in each case one spring groove (6) at the fastening points of the transition pieces (3) for the cable drums (4),

   - the centre piece of the drive shaft (2) is designed to be octagonal in cross section and consists of cold-rolled profiled structural steel,

   - the bending deflection between any two support points of the shaft is at most 1/600 of the length of the torsion bar device (5),

   - the octagonal shaft piece is of multi-part design over the length, wherein it is provided with a shaft coupling (8),

   - this shaft coupling (8) is formed from two or four sheet metal sections which are screwed to one another at the flange points, and

   - at least one of the pieces of each of these sheet metal sections that adjoins the drive shaft (2) is screwed to the drive shaft (2) in the region between the flanges.
2. Sectional door according to Claim 1,
   characterized in that
   the drive shaft (2) is fastened to the walls with a maximum of two brackets (1, 9, 10, 15), wherein bearing groups (7) for ensuring the axial alignment of the shaft during the rotary movement of the shaft are used.
3. Sectional door according to Claim 1,
   characterized in that
   it is provided with end support brackets (9, 10) for a rear shaft arrangement, wherein the end support brackets (9, 10) each have two fastening points for fastening to the ceiling and these fastening points are rotated with respect to one another by an angle of 90° in order to uniformly distribute the transverse and longitudinal loadings which occur.
4. Sectional door according to Claim 1,
   characterized in that
   the torsion bar device (5) is completely mounted on the end support brackets (1, 9, 10, 15), in that safety devices (11) are fastened to the end support brackets (1, 9, 10, 15), and in that each end support bracket (1, 9, 10, 15) has some fixed positions for fastening the drive shaft (2).
5. Sectional door according to Claim 4,
   characterized in that
   the door is equipped with end support brackets (1, 9, 10, 15) for a frontal shaft arrangement.
6. Sectional door according to Claim 1,
   characterized in that
   it is provided with end support brackets (1, 9, 10, 15) for a low shaft arrangement, wherein the load-bearing capacity of each end support bracket is at least 600 kg.
7. Sectional door according to Claim 1,
   characterized in that
   the torsion spring of the at least one torsion bar device (5) has a movable termination which is formed in two parts from an actual termination piece (13) and a shaft stop (14), wherein this shaft stop (14) reduces the internal stresses and the friction between the windings and limits the free displacement along the shaft (2) without rotation, and the actual, movable termination piece (13) is arrested on the shaft stop (14) by means of grooves with an accuracy of 1/4 of a revolution in order to ensure the possibility of setting the torsion bar device (5) for door balancing at any time, wherein the number of revolutions is changed during the spring loading, and wherein additional securing of the movable termination piece (13) on the shaft stop (14) is obtained by means of adjusting screws, wherein, in addition to the groove engagement, the possibility that the termination (13) of the shaft stop (14) is torn off is thereby avoided.

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