Device and method for installing a winding shaft of a vertically opening roller door and such a roller door

Abstract

The invention relates to a device for installing a winding shaft (12) of a vertically opening roller door (10), comprising a bearing block (14) arranged on the winding shaft (12) and a bearing block receptacle (16) arranged on a door frame (18) of the roller door (10). To simplify the installation of the winding shaft (12) and thereby reduce the risk of accidents, the bearing block receptacle (16) is provided with an inclined sliding section (20) and an end stop (22) for defining an end position for the bearing block (14). Furthermore, the invention includes a method for installing a winding shaft (12) of a vertically opening roller door, as well as a roller door (10) with the device described above.

Description

[0001] The present invention relates to a device for installing a winding shaft of a vertically opening roller door, comprising a bearing block that can be arranged on the winding shaft and a bearing block receptacle that can be arranged on a frame of the roller door. Furthermore, the present invention relates to a method for installing a winding shaft of a vertically opening roller door, as well as to such a roller door.

[0002] The first step in installing a vertically opening roller door is usually to install the frames. These are the vertical parts of the door frame that contain the guide rails for the door curtain. Depending on the installation situation, the frames are either mounted on or in a building opening, or they are attached to a floor surface and protrude vertically without any additional attachment points. The cross connection is then installed, usually involving the installation of a profile to connect the upper ends of the previously installed door frames. If the roller door is used to close a building opening, it is also possible to attach the cross connection to building elements. In a third step, the winding shaft is installed, usually with the door curtain wound up.This is done by securing the bearing blocks pre-mounted on the winding shaft to the door frame, usually using screws. In the final step, depending on the individual case, covers are attached to the door frame and / or the cross connection. These serve both as protection against dirt and to prevent improper handling of the roller door and its components.

[0003] The most complex and therefore most critical step in roller door installation is the installation of the winding shaft. Since the door curtain is often already wound onto the winding shaft, the shaft can weigh up to several hundred kilograms. For this reason, the rough positioning of the winding shaft is usually carried out using a forklift. The precise alignment and fastening using screws is then carried out manually. This step is not only made more difficult by working at height but also often carries a significant risk of accidents. For this reason, the option for fine adjustment, which is often provided by the elongated holes in the frame, is generally not taken advantage of.

[0004] An example of such a roller door known from the prior art is disclosed in DE 197 11 311 A1. Another example from the prior art is disclosed in DE 10 2007 015602 A1. DE 10 2007 015602 A1 also discloses a method for installing a winding shaft of a vertically opening roller door, comprising the steps of: pre-assembling a bearing block to a winding shaft; pre-assembling a bearing block receptacle to a door frame of a roller door, wherein the bearing block receptacle has an inclined sliding section; subsequently placing the bearing block onto the bearing block receptacle; and subsequently sliding the bearing block down along the sliding section of the bearing block receptacle using gravity.

[0005] The present invention is therefore based on the object of describing a device that simplifies the installation of a winding shaft of a vertically opening roller door. A roller door with such a device and a method for installing a winding shaft of a vertically opening roller door are further aspects of the invention.

[0006] The above-mentioned object and the further aspects are achieved by a device according to claim 1, a roller shutter according to claim 4 and a method according to claim 5. Advantageous further developments are the subject of the dependent claims.

[0007] A device according to the invention comprises a bearing block and a bearing block holder. The bearing block is already arranged or pre-assembled on the winding shaft to be installed. This can be either an axially closed bearing block if it is mounted on one axial end of the winding shaft, or an axially continuous bearing block if additional components, such as a drive motor, are arranged on the winding shaft on the side of the bearing block facing away from the door curtain. The bearing block has a rectangular shape, at least in sections, viewed in the axial direction of the winding shaft. Its depth is selected such that it can accommodate a bearing sufficiently dimensioned for the forces introduced by the roller door.

[0008] The bearing block holder represents the counterpart to the bearing block described above. It essentially consists of three sections. The fastening section rests on the side of a door frame facing the door curtain, which, in the context of the present application, includes both the vertical guide and the head plate located above it. The fastening section is attached to the door frame, i.e., the vertical guide and / or the head plate, using a suitable fixing device. This can be done either via detachable fasteners, such as screws, or via a permanent connection, such as a welded joint.

[0009] The sliding section of the bearing block holder extends at right angles to the fastening section and thus towards the door curtain. As the name suggests, this is the section over which the bearing block slides into its final position in a manner described later. To enable and facilitate this sliding, the sliding section is arranged at an angle. At the lower end of this incline is the end stop. Just like the sliding section, this extends towards the door curtain, perpendicularly away from the head plate of the door frame. Together with the sliding section, the end stop describes an angle which, in its initial state, i.e. before the winding shaft is installed, is less than 90°. The flexibility of the transition area between the sliding section and the end stop is selected such that this angle is increased by the force exerted by the dead weight of the winding shaft with the curtain wound up.At an angle of 90°, the geometry of the sliding section and end stop essentially corresponds to the shape of the bearing block, thus defining the end position for the latter. The connection between the winding shaft and the bearing block thus also defines the closing plane of the door curtain through the design and positioning of the bearing block mount.

[0010] According to a preferred embodiment, the inclination of the sliding section of the bearing block holder is selected such that the bearing block arranged on the winding shaft can slide down the sliding section and assume its final position solely by gravity. This depends largely on the material pairing present in the contact area between the bearing block holder and the bearing block. If the corresponding coefficient of static and / or sliding friction is higher, the inclination is selected to be somewhat steeper, whereas a lower coefficient of static and / or sliding friction requires a flatter inclination.

[0011] When operating roller doors, especially high-speed roller doors, considerable inertial forces occur. These result from the sometimes very large mass of the door curtain in combination with high acceleration forces when opening or closing the roller door. To prevent these inertial forces from causing the bearing block to move within the bearing block holder or even to jump out of the latter, a further preferred embodiment provides a mechanism for fixing the bearing block in the end position of the bearing block holder. A screw connection, for example, is suitable as such a mechanism, but other suitable fixings are also conceivable. Particularly preferably, two screws are provided for fastening the bearing block per bearing block holder. This represents a good compromise between additional installation effort and improved safety.

[0012] A roller shutter according to the invention comprises a device in one of the embodiments described above. Compared to prior art roller shutters, this roller shutter is characterized by significantly simpler installation. This significantly reduces the time required for installation. Furthermore, the safety of the personnel performing the installation is also improved, as the number and complexity of the work steps required at height are reduced.

[0013] The invention further comprises a method for installing a winding shaft of a vertically opening roller door. In a first step, which, depending on the specific circumstances, can be carried out at a time and / or location separate from the further assembly, a bearing block is mounted on a winding shaft. In many cases, it is expedient to mount a bearing block on either side of the door curtain. On the one hand, an axially closed bearing block can be considered if it is intended for mounting on one axial end of the winding shaft. On the other hand, this can also be an axially continuous bearing block if further components, such as a drive unit, are to be arranged on the winding shaft on the side of the bearing block facing away from the door curtain.

[0014] In a second step, which does not necessarily have to take place after the first step, but can also be performed before or during it, a bearing block holder is pre-mounted on a head plate of a roller shutter door frame. This bearing block holder corresponds to the bearing block holder described above, which means that it has, among other features, an inclined sliding section and an end stop. If two bearing blocks according to the invention were or are pre-mounted on the winding shaft in the first method step, then a bearing block holder is pre-mounted on each of the two door frames in the second method step.

[0015] The bearing block pre-assembled on the winding shaft is then placed onto the pre-assembled bearing block holder. If corresponding components are provided on both axial sides of a door curtain or on both door frames, both bearing blocks are placed onto the corresponding bearing block holders. In a final process step, the bearing block slides down the sliding section of the bearing block holder using gravity until it reaches the end stop and assumes the final position defined by it. Upon completion of this step, the winding shaft is also positioned precisely in its working position.

[0016] According to a preferred embodiment of the method, the gravity-based placement of the bearing block in the final position is assisted manually and / or mechanically. This makes it possible to compensate for inaccuracies when placing the bearing block on the bearing block holder with manageable effort. In particular, precise positioning of the bearing block in the bearing block holder can be achieved by manually and / or mechanically influencing the gravity-based sliding.

[0017] According to a further preferred embodiment, the bearing block is secured in the bearing block holder after it has reached its final position determined by the end stop of the bearing block holder. Various types of detachable and non-detachable fasteners are conceivable for this purpose. It has proven particularly effective to attach the bearing block to the bearing block holder using at least one screw, preferably two screws. This type of fixation supports the absorption of the inertial forces occurring during operation of the roller shutter and thus prevents the bearing block from slipping or jumping out of the bearing block holder.

[0018] The method described above significantly reduces the time required to install a roller shaft for a vertically opening roller door. At the same time, the number of manual steps, often performed at great heights, is reduced, thus significantly reducing the risk of accidents during roller shaft installation.

[0019] The device and method according to the invention are explained below with reference to the drawings, in which: Fig. 1 is an isometric view of a device known from the prior art for installing a winding shaft of a vertically opening roller door; Fig. 2 is a schematic view of a method for installing a winding shaft using the device according to Fig. 1; Fig. 3 is an isometric representation of a device according to the invention for installing a winding shaft of a vertically opening roller door; and Fig. 4 is a schematic representation of a method according to the invention for installing a winding shaft with the device according to Fig. 3 .

[0020] Fig. 1 shows a device known from the prior art for installing a winding shaft 12 of a vertically opening roller door 10. The roller door 10 comprises a winding shaft 12, which in the illustration according to Fig. 1a door curtain is wound up. A bearing block 14 is arranged on the winding shaft 12, which serves to mount the winding shaft 12 and to absorb the forces acting on the winding shaft 12. For this purpose, the bearing block 14 is fixed in the axial direction to a door frame 18, which in the context of the present application comprises both a vertical guide and a head plate. In the embodiment shown, the door frame 18 is equipped with elongated holes for this purpose, which enable precise positioning of the bearing block 14 and thus of the winding shaft 12. The bearing block 14 is designed to be axially continuous, since a drive motor 24 including necessary additional components such as the control system and gear unit is arranged on the side of the bearing block 14 facing away from the door curtain.

[0021] A method for installing a winding shaft 12 using the device described above is described in Fig. 2schematically illustrated. In a first, upstream step, a bearing block 14 was pre-assembled to the winding shaft 12. The winding shaft 12 with the bearing block 14 arranged on it and the already wound-up door curtain is now roughly positioned at the later installation location. Due to the high weight and the often great height at which the installation takes place, this step is usually carried out with a forklift or another more or less suitable tool. The fine adjustment and fixing of the bearing block 14 to the door frame 18 is then carried out manually, whereby this work step poses a considerable risk of accident due to the height and weight of the winding shaft 12. This means that the possibility of precise positioning of the winding shaft 12, which is made possible by the elongated holes provided in the door frame 18, is often not noticed or cannot be noticed.

[0022] For this reason, the device according to the invention dispenses with such a possibility of fine adjustment and instead enables a method that allows faster installation with a reduced risk of accidents for the installation personnel.

[0023] Fig. 3 shows a roller door 10 according to the invention with such a device. As in Fig. 1In the prior art shown, an axially continuous bearing block 14 is arranged on a winding shaft 12. A drive motor 24, the peripheral components of which include a control system and a gear, is provided on the side of the bearing block 14 on the winding shaft 12 facing away from the door curtain. Instead of axially fixing the bearing block 14 to the head plate of the door frame 18, the device according to the invention now comprises a bearing block receptacle 16. This consists of a fastening section, via which the bearing block receptacle 16 is fixed to the door frame 18. In addition, the bearing block receptacle 16 comprises a sliding section 20, which is inclined, and an end stop 22, which extends from the lower end of the sliding section 20 at an acute angle in a substantially upward direction.

[0024] A method according to the invention for installing a winding shaft 12 of a vertically opening roller door 10 is to be explained with reference to the schematic illustration in Fig. 4 be presented. The rough placement of the winding shaft 12 is again carried out using a forklift or other suitable lifting device. During the rough placement, it is sufficient to position the bearing block 14 on the sliding section 20 of the bearing block holder 16. Due to gravity, the bearing block 14 slides down the sliding section 20 to the end stop 22. The high weight of the winding shaft 12, which is transferred via the bearing block 14 to the bearing block holder 16, causes the originally acute angle between the sliding section 20 and the end stop 22 to be deformed into a right angle. This gives the bearing block 14 a flat contact both on the sliding section 20 and on the end stop 22, which defines the end position of the bearing block 14. List of reference symbols

[0025] 10Rolling door 12Winding shaft 14Bearing block 16Bearing block holder 18Door frame 20Sliding section 22End stop 24Drive motor

Claims

1. Device for installing a winding shaft (12) of a vertically opening roller door (10), including a bearing block (14) which is capable of being arranged on the winding shaft (12) and a bearing block receptacle (16) which is capable of being arranged on a door frame (18) of the roller door (10), wherein said bearing block receptacle (16) has a sliding section (20) for the bearing block (14) which is inclined an installation position, characterized in that the bearing block receptable (16) has an end stop (22) for defining an end position for the bearing block (14).

2. Device according to claim 1, characterized in that the inclination of the sliding section (20) of the bearing block receptacle (16) is selected such that the bearing block (14) can slide into the end stop (22) of the bearing block receptacle (16) based on gravity and assume its end position.

3. Device according to claim 1 or 2, characterized by at least one provision for fixing the bearing block (14) in the end position of the bearing block receptacle (16).

4. Vertically opening roller door (10) having a device according to one of claims 1 to 3.

5. Method for installing a winding shaft (12) of a vertically opening roller door (10), comprising the steps of: - pre-assembling a bearing block (14) to a winding shaft (12); - pre-assembling a bearing block receptacle (16) to a top plate of a door frame (18) of a roller door (10), wherein the bearing block receptacle (16) has an inclined sliding section (20) and an end stop (22); - subsequent placing the bearing block (14) on the bearing block receptacle (16); and - subsequent gravity-based placing of the bearing block (14) along the sliding section (20) of the bearing block receptacle (16) in a downward direction and placing the bearing block (14) in an end position defined by the end stop (22) of the bearing block receptacle (16).

6. Method according to claim 5, wherein the steps of gravity-based placing of the bearing block (14) along the sliding section (20) of the bearing block receptacle (16) in a downward direction and placing of the bearing block (14) in the end position is assisted manually and / or mechanically.

7. Method according to claim 5 or 6, wherein the bearing block (14) is fixed in the end position defined by the end stop (22) of the bearing block receptacle (16).

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