JPH0212877B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lifting device with a load accommodation device.

Lift devices of this type are used, for example, as lifts for disabled people and can be retrofitted into staircases. Chain, as a support or traction device
Lifts for disabled persons using ropes with racks or support members are already known. The guide rail on which the seat of such a lift slides is then incorporated into a box or passageway which requires a fixed installation on the staircase. Such a box occupies part of the width of the staircase and blocks the passage to the door of that floor at the landing of the staircase. For safety, such lifts must be equipped with holding devices or special brakes.
Therefore, twice the number of ropes or chains is required. Furthermore, the known lifts have a construction that requires a very complex manufacturing technology.

The object of the invention is to obtain a simply constructed lifting device that requires only space for a load storage device and has sufficient safety without narrowing the free width of the step and the landing space.

This object is achieved according to the invention by providing a load receiving device for supporting a platform or stool guided via guide rods along the steps, the load receiving device comprising teeth supported on the load receiving device. a lift device of the type that is driveable via a rotatable component, the component being fixed along a staircase and moving along teeth corresponding to the teeth of said component; the component comprises a worm connected to a drive spindle and the corresponding tooth comprises a worm wheel;
This problem was solved in that the teeth of the worm wheel were spread out and divided into a number of identical segment plates.

In the case of such a lifting device according to the invention, chains or ropes as support and traction devices are unnecessary, as well as additional braking or holding devices, since the drive with the worm and the worm wheel is self-locking. It's unnecessary. The speed of the load carrier can be varied as desired by varying the angle of inclination of the guide rod, so that it is reduced, for example, in the case of a curved journey through a spiral section of a staircase, thus keeping the centrifugal forces generated low. be able to. This reduction in running speed, which can be obtained by simple construction measures, serves the safety of the user.

Furthermore, the lifting device according to the invention is particularly suitable for long staircases. This is because an arbitrary number of segment plates can be arranged immovably on the side of the staircase at suitable intervals. Furthermore, it is not necessary to use a pipe or the like running continuously along the stairs as a guiding device. In this case, the guide rod can be used as a handrail for the stairs.

The thread pitch of the drive spindle and the thread pitch of the worm wheel as a guide device can also be varied. The structural height of the lift device can be reduced.

In this case, the angle of inclination of the drive spindle can also be changed arbitrarily with respect to the vertical. The drive spindle can also be arranged slidably in a horizontal position.

Further advantageous embodiments of the invention are described in the subclaims.

Next, the present invention will be explained with reference to the drawings.

Lifting devices are installed along the direct or spiral steps of the stair section.

In this case, the lifting device is suspended on a guide that simultaneously serves as a stair handrail. This guide includes a lower guide rod 52 (support rod) extending along the stairs 10 and an upper guide rod 53 (support rod) running parallel to this.
Consisting of This guide or support rod is a vertical post 5
4 is fixed to the top of the staircase 10 and to one side of this staircase. A number of small vertical rods 55 are fixed to the guide rods 52 and 53 equidistantly between the two columns 54 .

The load-accommodating device of the lifting device, in which the seat 56 is fixed laterally in the area of the stairs 10, is formed by two guide rods 5.
2 and 53 so that it can run along them. For this purpose, the guide rods 52 and 53 are formed from tubes with a circular cross section so that the support rollers 65, 66 can roll thereon. The load accommodation device includes vertical beams 57 on both sides, a lower transverse beam 58, an upper transverse beam 59,
It is formed as a frame with a lower combined beam 60 and an upper combined beam 61. The support of the frame to the guide bars 52 and 53 takes place via coupling beams 60 and 61, each of which supports a number of support rollers rolling along the guide bars.

A roller support plate 63 perpendicular to the support 62 with a horizontal axis fixed to each coupling beam 60 and 61
is rotatably supported. This roller support plate 63
Two lower support rollers 65 and one upper support roller 6 are attached to a fixed support shaft 64 that projects horizontally from the
6 is rotatably supported. In this case, an upper support roller 66 is supported on the upper side of its guide rod 52 or 53, and two lower support rollers 65 are supported on this rod below the guide rod 52 or 53, one behind the other in the direction of travel of the lifting device. . In this way, the load-accommodating device of the lifting device can be shifted slightly out of parallelism while running along the guide rods 52 and 53. This is because the support rollers 65 and 66 are each rotatably supported by a rotatable roller support plate 63.

A motor 68 with a belt drive 69 is arranged in a motor casing 67 on the frame for driving the lifting device. This drives a vertical drive spindle 70 which is rotatably supported in a lower spindle bearing 71 fixed to the lower transverse beam 58 and an upper spindle bearing 72 fixed to the upper transverse beam 59. be done.

The worm gear principle is used for drive torque transmission. A worm 73 is therefore arranged on the drive spindle 70. However, instead of meshing with the usual worm wheel of the teeth of the worm 73, the corresponding teeth are unfolded, i.e. the screw is divided into a number of segment plates 74 as guiding devices, two on each support column 54 and on each small rod 55. A segment plate 74 is fixed approximately midway between the two guide rods 52 and 53, for example with screws 75.

In the stationary state, the lifting device is guided by guide rods 52 and 53.
(support rod). The worm 73 meshes with the teeth of at least one segment plate 74 as a guide device, so that the load receiving device is supported via the worm gear arrangement. Self-locking occurs depending on the worm gear ratio. Therefore, it is impossible for the load accommodation device to rotate the worm 73 due to its weight. However, when the drive spindle 70 and the worm 73 rotate with it, the load receiving device necessarily moves through its support rollers 65 and 66 to the guide rod 52, since the teeth of the segment plate 74 of the load receiving device mesh with the worm 73. and move along 53.

The drive type of the motor 68 can be controlled by a switch board 77 by a user sitting on the stool 56 and supported by the footrest 76. Exceptionally, when the entire width of the staircase is required for further transport, the stool 56 can be easily removed and the footrest 76 and the switch board 77 can be easily pivoted upwards.

In this embodiment, the drive spindle 70 with the worm 73 is arranged vertically. However, embodiments in which the drive spindle is tilted in any other direction or arranged horizontally are also possible. Guide rods 52 and 53 as support rods are also arranged in arbitrary directions,
For example, it may run vertically or horizontally.

The lifting device of the present invention is a towing machine in which a large number of front and back load bearing devices such as platforms or seats are pulled along guide rods 52 and 53, and thus a large number of people and/or objects can be transported simultaneously. It can also be formed as

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view schematically showing a staircase with a lift device according to the invention attached, and Fig. 2 is a partial view of the lift device attached to the staircase. FIG. 3 is a schematic front view of the lift device mounted on a staircase, and FIG. 4 is a plan view of the worm meshing with the teeth of two adjacent segment plates. 52, 53... Guide rod (support rod), 57... Vertical beam, 58, 59... Horizontal beam, 60, 61
... Combined beam, 65, 66 ... Support roller, 6
2...Supporter, 63...Roller support plate, 68...
Motor, 70... Drive spindle, 73... Worm, 74... Segment plate.

Claims (1)

[Claims] 1 Lifting device, comprising a load-accommodating device for supporting a platform or a stool guided via guide rods along the steps, the load-accommodating device being supported by a toothed rotary device of the type in which the rotatable component is movable along teeth corresponding to the teeth of said component fixed along the staircase; It consists of a worm 73 connected to a drive spindle 70 and is characterized in that the corresponding teeth consist of a worm wheel, the teeth of which are unfolded and divided into a number of identical segment plates 74. Lifting equipment.