SU1740295A2 - Wheelchair hoisting device - Google Patents

Abstract

The invention relates to lifting devices and can be used to raise a wheelchair along a flight of stairs. A device for raising a wheelchair consists of a guide element 1 rigidly attached to the wall of a building 2 parallel to a flight of stairs 3, which is laid out removable flooring 4 for moving the wheelchair 5. On the guiding element 1, a carriage 6 is installed, comprising a manual self-braking transmission, which is a planetary gearbox; The carriage is operated by a handle 9, complements a crankshaft mounted removably on the count sk, yl 8

Description

The invention relates to lifting devices and can be used to raise a wheelchair on a flight of stairs.

A device for raising a wheelchair is known, comprising three guide elements, one of which is fixedly mounted on the wall of the building, and the other two are laid on the flight of stairs and form a flooring for placing the wheelchair on it and the drive including the guide element mounted on the wall of the building is in the form of a rail and mounted on a wheel with the possibility of dismounting a gearbox consisting of a manual self-braking transmission and a kinematically associated wheel interacting with the rail

The wheel is brought into engagement with the guide element and is attached to the reducer of the wheel. The self-braking transmission can be performed on the worm gear.

However, with such an implementation of the device there are significant inconveniences during its operation

the weight of the actuator and the vertical position of the handle, which makes it particularly difficult for the device to be handicapped with a diseased spine.

The purpose of the invention is to improve ease of operation.

The goal is achieved by those. that the manual self-braking transmission is a planetary gearbox which, together with the wheel, forms a carriage mounted for movement on the rail and driven by a driving handle made in the form of a crankshaft mounted for dismounting at the wheel

FIG. 1 shows a device, a general view, in FIG. 2 is a section A-A in FIG. 1; FIG. 3 is a section bb of FIG. 2; in fig. 4 is an enlarged external drive element in FIG. 2, in FIG. 5 shows a section B-B in FIG. four; Fig 6

- kinematic drive circuit: in fig. 7

- cut of GG in FIG. 6: in FIG. 8 is a perspective view of the device, a general view.

The device consists of a guiding element 1, made in the form of a rail to (L

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The latter is rigidly fixed on the wall of building 2 parallel to the flight of stairs 3. Removable flooring 4 is laid on the flight of stairs 3. along which the wheelchair 5 moves. Carriage 6 is mounted on the guide element 1.

The carriage 6 comprises a manual self-locking transmission 7. for example, a planetary gear and a wheel 8. engaged with the guide element 1

The removable drive handle 9 is installed and fixed in the carriage 6. The handle locking mechanism 9 contains a cam 10 connected to the lever 11 by means of a flexible link 12 and a spring 13 interacting on the balls 14. The handle 9 is designed as a crankshaft

The device works as follows.

On the flight of stairs 3 is laid flooring 4. A wheelchair 5 with a removable driving handle 9 is installed on the platform in front of the flooring 4, then the handle 9 is installed and fixed in the carriage 6. To install the handle 9, turn off the lever 11 relative to its axis.

The force from the lever 11 is transmitted through the flexible coupling 12 and the spring 13 to the cam 10. which releases the balls 14. To fix the handle 9, the lever 11 is returned to

initial position. The spring 13 expands and moves the cam 10, which fixes the balls 14 in the slots of the carriage 6. Then the wheel 5 is attached to the handle 9. Rotate the handle 9 to lift the wheel 5 upwards along the floor 4. Torque from the handle 9 moves through the balls 14 and the manual self-locking transmission 7 to the carriage 6. Performing the handle in the form of a crankshaft significantly reduces the required effort, and performing the transmission in the form of a planetary gearbox allows the handle to be installed horizontally. After lifting, the handle is removed from the carriage 6 and

placed in a ring 5. The descent is made similarly.

Claims (1)

Claims of the Invention A device for raising a wheelchair according to aut. St. N 1632915, about tl and h a torn, e e with that. that, in order to improve ease of operation, the manual self-braking transmission is a planetary gearbox, forming together with wheel carriage mounted for movement along the rail and driven by a driving handle made in the form of a crankshaft mounted for dismounting at stake. 4A Fig / 12 ten L - A Fig 3 I Phiech ate t Sl e & N 1 I -five -j x o NJ Ј SYA i f FIG. at