BG1989U1 - Platform for the transportation of people in wheelchairs on stairs - Google Patents

Abstract

The utility model relates to a compact platform for the transportation of people in wheelchairs on stairs, applicable in residential and office buildings, consisting of fixed guideways (1), movable carriage (2) and a separate and positioned near the ceiling of the stairwell driving unit (3), transferring the movement of the movable carriage (2) by means of a driving unstretchable flexible element (4). Advantages of the solution are the compact construction due to the compartments and the driving unit positioned near the ceiling of the stairwell, the absence of power supply and current conductors in the accessible area, the easy manual rotation of the movable base of the carriage, due to the approximate static equilibrium through a torsion shaft, the guaranteed safety in the use of the platform, provided by the synchronized movement of the movable barrier and the limiters at both ends of the movable base and the fully mechanical system for emergency blocking of the movable carriage at the event of a rupture of the driving flexible element, the manufacturability and low cost of construction, high reliability, easy maintenance and low operating costs.

Description

(54) WHEELCHAIR TRANSPORT PLATFORM

Field of technology

The utility model refers to a compact platform for transport on stairs for people in wheelchairs, which will find application in residential and office buildings in cases where it is necessary to overcome stairs by people with limited mobility in wheelchairs.

BACKGROUND OF THE INVENTION

Wheelchair transport platforms are increasingly used to overcome stairs indoors or outdoors. There are different designs, with the predominance of those with hydraulic drive [1], due to the easier transformation of the movement into linear compared to those with electromechanical drive. All 20 of them usually contain an electric motor, a volumetric hydraulic pump, a hydraulic cylinder (cylinders), a control system, pipelines, a platform and safety systems.

The lifting of the platform takes place at the expense of the energy of the compressed fluid (oil). The pressure and flow of the fluid is realized by a volumetric pump (piston or gear), driven by an electric motor.

Electromechanical systems are built θ mainly by rack or rope systems [2], [3], [4], associated with the use of drums, ropes, mechanical brakes, gearboxes, etc.

The lifting of the platform is at the expense of electric drive by electric motor / reducer.

Characteristic of all known solutions is the large side size of the systems, their complex construction and respectively the low reliability and high cost.

The lowering of the platform is at the expense of gravitational forces, and its speed is regulated by throttling the fluid, or by the same propulsion system as in 45 lifting in the case of an electromechanical solution. The control is performed by an electrical / electronic system by the attendant or directly by the person in the stroller in the presence of a remote control system.

Technical essence of the utility model

The aim is to create a compact platform 5 for transporting people on stairs in wheelchairs, which during the time when not in use, creates minimal inconvenience when going up the stairs, while characterized by technological construction, high reliability and low operating costs.

The task is solved by means of a movable carriage moving on guides, fixed to the wall of the staircase. The movable carriage is driven by means of an inextensible flexible element (rope, cord, chain, belt), as the drive block is separate and extended directly to the ceiling of the staircase, where it does not create inconveniences when passing the stairs. The movable carriage, performing a rectilinear motion, is mounted by means of a system of support rollers rolling on the fixed guides. A movable base is attached to the carriage, which can be rotated 90 degrees relative to the carriage, moving from vertical to horizontal position and vice versa, and approximately static balancing of the movable base is achieved by means of a torsion shaft built into the hinge. At both ends, the movable base terminates with stoppers which rotate relative to their axes synchronously with the lowering of the movable barrier by means of a geometric connection between the movements, realized by an inextensible flexible element and a system of rollers. In the event of an emergency, when the flexible element breaks, the movable carriage remains guaranteed to be stationary in its current state by means of a locking emergency system consisting of a system of pins and a movable arm. In cases where the wall of the staircase ends at the base of the staircase, the guides along which the carriage moves consist of two parts connected to each other by a hinge. One part of the guides is fixed to the wall of the staircase, and the other is fixed in the same plane in the working position of the platform and in a perpendicular plane when parking the platform.

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are the compact construction due to the compartment and external to the ceiling of the staircase drive unit, where the overall size does not exceed 100 mm creates minimal inconvenience when 5 going up the stairs during the time when the platform is not in use, the lack of power and current in the accessible zone, easy rotation of the movable base by hand due to the approximate static 10 balancing by means of a torsion shaft, guaranteed safety when using the platform provided by the synchronized movement of the movable barrier and the stops at both ends of the movable base and the fully mechanical emergency locking system of the mobile carriage in case of rupture of the flexible element, manufacturability and low cost of construction, high reliability, easy maintenance and low operating costs.

Explanation of the attached figures

Figure 1 shows an exemplary embodiment of the platform for transporting people 25 in wheelchairs on stairs.

Figure 2 shows a section of the movable carriage with the torsion shaft, by means of which approximately static balancing of the movable base is achieved. 3 θ

Figure 3 shows the locking emergency system by means of which, in the event of an emergency, in the event of a rupture of the flexible element, the movable carriage remains guaranteed to be stationary in its current state. 35

Figure 4 shows the construction of the movable fixed guides.

Figure 5 shows the sequence of manipulations when boarding a person in a wheelchair from the lower to the upper 49 of the staircase.

Figure 6 shows the sequence of manipulations when a person in a wheelchair descends from the upper to the lower landing of the staircase. 45

Example of implementation of the utility model

The platform for transporting people in wheelchairs on stairs (Fig. 1) consists of movable fixed guides 1, movable carriage 2 and not connected to fixed rails 1 and located near the ceiling of the stair drive unit 3, transmitting the movement of the movable carriage 2 by means of an actuating non-extensible flexible element 4 passing through a deflection roller 5. The fixed guides 1 are fixed to the stair wall by means of bolt pins 6 and bolts 7. The absence of access to the flexible element is ensured by protective covers 8 and 9. performing a rectilinear motion, is mounted by means of a system of support rollers 16 (Fig. 3), rolling on the fixed guides 1. To the carriage 2 is attached a movable base 10, which can rotate 90 degrees relative to the carriage 2, whereby passes from vertically in a horizontal position and vice versa, and approximately static balancing of the movable base is achieved and by means of a torsion shaft 15 built into the hinge between the movable carriage 2 and the movable base 10 (fig. 2). At both ends, the movable base ends with stops 12, which rotate relative to their axes synchronously with the lowering of the movable barrier 11 by means of a geometric connection between the movements realized by an inextensible flexible element 13 and rollers 14 (Fig. 2). In case of emergency, in case of rupture of the flexible drive element 4, the movable carriage 2 remains guaranteed stationary in its current state by means of a locking emergency system consisting of a system of bolt pins 6 and movable arm 17 (Fig. 3), as in case of rupture of the flexible drive element 4. , the movable lever 17, hinged to the movable carriage 2, rotates around its axis under the action of gravity until it reaches the stop 18 and meeting the butt pin of the bolt-pin system 6 blocks the movement of the movable carriage 2 (Fig. 3). . In cases where the wall 0 of the staircase ends at the base of the staircase, the fixed guides 1 along which the carriage 2 moves consist of two parts connected to each other by a hinge 19 (Fig. 4). The stationary part of the guides 1 is fixed to the wall of the staircase 0, and the other part 1-1 is fixed by means of a pin 20 (Fig. 4) in the same plane in the operating position of the platform (Fig. 56) and in a perpendicular plane when parking the platform (Fig. 5a).

In FIG. 5 shows the sequence of manipulations when boarding a person in a wheelchair from the lower to the upper landing of the staircase. Initially, the platform is in a parked state (Fig. 5a). After rotating 90 degrees of the lower part 1-1 of the sliding guides together with the movable carriage 2 and fixing it to the upper fixed part 1 of the sliding guides by means of the pin 20, the platform moves to the initial position (Fig. 56). The movable base 10 is then rotated 90 degrees relative to the movable carriage 2 so that it occupies a horizontal position (Fig. 5c). The front part of the barrier 11 is lowered, at the same time the front stop 12 in the lower part of the movable base 10 is rotated upwards (Fig. 5d). In this position, the wheelchair moves so that it stands in the middle of the movable base (Fig. 5e). The rear part of the barrier 11 is lowered, at the same time the rear stop 12 in the lower part of the movable base 10 is raised, by means of which the wheelchair is fixed relative to the movable base 10 (Fig. 5f). The wheelchair is then transported from the lower to the 30 steps of the staircase by remote actuation of the drive unit 3, and when the movable base 10 is lowered, its activation is possible only when the movable barrier 11, resp. raised stops 35 The movement continues until the drive unit 3 receives a stop signal from the upper limit switch (Fig. 5g). The front movable barrier 11 is then raised, synchronously rotating down 40 the front stop 12 at the bottom of the movable base 10 (Fig. 5h). The wheelchair moves on the upper staircase, located at the level of the movable base (Fig. 5i). Then the rear movable barrier 11 and the movable base 10 are rotated by hand to a vertical position (Fig. 5j). By means of remote actuation of the drive unit 3, the movable carriage 2 moves downwards, the movement continuing,

U1 until a control stop signal is received from the lower limit switch (Fig. 5k). This is followed by releasing the lock by pulling up the pin 20 and rotating the lower part of the guides 1 -1 together with the carriage 2 at 90 degrees, whereby the platform goes into the parked state (Fig. 5l). In cases when the wall of the staircase does not end at its base, 10 the construction of the guides consists only of the fixed rails 1, where the initial and final parked condition of the platform correspond to those shown in fig. 56 and FIG. 5k, with the exception of 15 rotation of the lower part 1 -1 of the movable fixed guides 1, the other manipulations are analogous.

In FIG. 6 shows the sequence of manipulations when a person in a wheelchair 20 descends from the upper to the lower landing of the staircase. Initially, the platform is in a parked state (Fig. 6a). After rotating 90 degrees of the lower part 1-1 of the sliding guides 25 together with the movable carriage 2 and fixing it to the upper fixed part 1 of the sliding guides by means of the pin 20, the platform moves to the initial position (Fig. 66). The movable carriage 2 is then moved from the lower to the upper landing of the staircase by remote actuation of the drive unit 3. The movement continues until the drive unit receives a stop signal from the upper limit switch (Fig. 6c). Then, the movable base 10 is rotated 90 degrees relative to the movable carriage 2 so that it occupies a horizontal position (Fig. 6d). The front part of the barrier 11 is lowered, at the same time the front stop 12 is rotated upwards in the lower part of the movable base 10 (Fig. 6e). In this position, the wheelchair moves so that it stands in the middle of the movable base (Fig. Be). The rear part of the barrier 11 is lowered, at the same time the rear stop 12 is rotated upwards in the lower part of the movable base 10, by means of which the wheelchair is fixed relative to the movable base 10 50 (Fig. 6g). Transports are then performed5

1989 UI the wheelchair from the upper to the lower landing of the staircase by remote actuation of the drive unit 3, and when the movable base 10 is lowered, its activation is possible only when the movable barrier 11 is lowered, resp. raised stops 12. The movement continues until the drive unit 3 receives a stop signal from the lower limit switch (Fig. 6h). Then, the front part of the movable barrier 11 is raised, while the front stop 12 is synchronously rotated downwards in the lower part of the movable base 10 (Fig. B). The wheelchair moves on the lower landing (Fig. 6j). Then the rear part of the barrier 11 and the movable base 10 are rotated by hand to a vertical position (Fig. 6k). This is followed by releasing the lock by pulling up the pin 20 and rotating the lower part of the guides 1-1 together with the carriage 2 at 90 degrees, whereby the platform goes into the parked state (Fig. 6l). In cases where the wall of the staircase does not end at its base, the construction of the guides consists only of the fixed rails 1, where the initial and final parked condition of the platform corresponds to those shown in fig. 66 and FIG. 6k, with the exception of the rotation of the lower part 1-1 of the movable fixed guides 1, the other manipulations are analogous.

Claims (2)

Claims A platform for transporting people in wheelchairs on stairs, consisting of fixed to the wall of the staircase by means of bolts-pins (6) and bolts (7) fixed guides (1), on which by means of a system of support rollers (16) is bearing translationally moving movable carriage (2), driven by a drive unit (3), characterized in that the drive unit (3) is fixed to the wall to the ceiling of the staircase, and the movable carriage (2) is driven by a connected it is driven by a non-extensible flexible element (4) passing through a deflection roller (5), and a manually driven movable base (10) is hinged to the movable carriage (2) with a balancing torsion shaft (15) built into the hinge, whereby the synchronization of the position of the stops (12) hinged to the movable base (10) and fixing the wheelchair to the movable base (10) of the movable carriage (2), and the movable barrier (11) hinged to the movable carriage (2), exists geometrically by means of an inextensible flexible element (13) and a system of rollers (14), such as the lever (17) hinged to the movable carriage (2), the end positions of which are determined by its contact with the actuating non-extensible flexible element (4) and stop ( 18), and the bolt-pin system (6) is a mechanical gravity-driven locking system in case of rupture of the driving non-extensible flexible element (4). Platform for transporting people in wheelchairs on stairs according to claim 1, characterized in that movable guides (1-1) are connected to the fixed guides (1) by means of a hinge (19), which are fixed by means of a pin (20). ) in the plane of the fixed guides (1) when the platform is in working position and in a plane perpendicular when the platform is parked.