RU141068U1 - DISABLED STROLLER - LIFT "VECTOR - ESK -1" WITH OPPORTUNITY TO OPERATE ON MOBILE AND ESCALATOR STAIRS - Google Patents

Abstract

1. Wheelchair-lift with the possibility of operation on fixed and escalator stairs, containing a chair with a back and armrests to accommodate a disabled person, a telescopically sliding frame with handles for an accompanying-control person - an assistant at the ends of the extendable part of the frame and with a telescopic latch interconnections, coaxial main wheels, forward wheels extended forward, a device for moving along the steps of the stairs, which includes those connected with the reverse lever electromechanical drive and a source of autonomous power supply, lever-walking propellers spaced along the axis of the wheels, displaced from it in the transverse directions within the radius of the wheels, protruding beyond the outer circumference of the wheels with their ends for interaction with steps and the possibility of force rotation in planes parallel to the planes of rotation of the wheels , and brakes, characterized in that it further comprises at least one remote into the space behind the seatback from its idle fixed position tions support with elastic fifth friction at the free end, wherein the fixed operating position in contact with the heel of the step corresponds to the stable static equilibrium wheelchair of a disabled person, at least for the escalator stairs without retention assistentom.2. The wheelchair-hoist according to claim 1, characterized in that the elastic frictional heel of the support is made in the cross section Τ-shaped with the possibility of partial elastically deformable penetration with a narrow plate-like end into the longitudinal grooves of a standard escalator

Description

The utility model relates to land vehicles - rehabilitation equipment, specifically to wheelchairs - stair lifts, designed to move a disabled person along fixed and, mainly, escalator stairs, while maintaining the possibility of transportation outside the stairs.

The most significant, urgent problem on the way of creating mobile technical rehabilitation equipment (TCP) is the problem of moving people with limited physical abilities (hereinafter - the disabled) up stairs and overcoming other specialized obstacles such as a curb.

There is world experience (Germany, the USA and other technically developed states) in the creation and operation of wheelchairs and staircases, moved by an assistant [Elektrische Treppensteiger. Hersteller / Manufacturer SANO Trasportgeraete GmbH. - Am Holzpoldigut 22 4040 Linz / Lichtenberg. AUSTRIA. (Catalog of the Austrian company SANO. - 15 pp. - Product of the Internet: http://www.sano-stair-climber.com; www.sano-treppensteighilfe.com); S-max - der Treppensteiger fur Ihren Rollstuhl. AAT Alber Antriebstechnik GmbH / Postfach 100560 D-72426 Albstadt. (S-MAX catalog of the German company AAT. - 8 pp. - Internet product: http://www.aat-online.de); S-max - der universalle Treppensteiger. AAT Alber Antriebstechnik GmbH / Postfach 100560 D-72426 Albstadt. (S-MAX catalog of the German company AAT. - 8 pp. - Internet product: http://www.aat-online.de)].

For all their undoubted usefulness, they do not have a stable position on the stairs and, moreover, dynamically stable transportation of a disabled person on escalators (including metro escalators) without having to be temporarily held by an assistant.

Known as an analogue is a wheelchair-lift ("Vehicle, primarily for moving a person on stairs") with the possibility of operation on fixed and escalator stairs, containing a chair with a back for accommodating a moving person - a disabled person, a telescopically sliding frame with handles for accompanying a control person - an assistant at the ends of the extendable part of the frame and with a lock of the indicated telescopic relationship, coaxial main wheels, additional wheels extended forward, your movement along the steps of a ladder, which includes lever-walking propellers (“support levers”) connected with the electric drive and an autonomous power source, spaced along the axis of the wheels, displaced from it in the transverse directions within the radius of the wheels, protruding beyond the outer circumferences of the wheels ends for interacting with steps and the possibility of force turning in planes parallel to the planes of rotation of the wheels and the brake [RU 2304952 C1, A61G 5/06, B62B 11/00, 08/27/2007].

In it, the rotation drive of the lever-stepper mover is made non-reversible, without the possibility of a force turn in the direction of descent from the stage. But, in order to ensure the possibility of this descent, a specialized device is provided to ensure smooth descent from the step (from the ladder) - in the form of a damper with movable and fixed links and an additional support arm oriented backward from the wheel axis, one end of which is pivotally mounted on the frame and the other pivotally connected to the movable link of the damper, and the fixed link of the damper is fixed on the frame. In private versions of the device, the damper is made hydraulic, and the ends of the additional support arm are equipped with non-figured, in a vertical cross section, friction elements-heels.

The advantage of such a device is the energy-efficient descent from the steps (saving energy in an autonomous source - the battery): the damper with an additional support lever provides support for the stroller to the stage for the period of wheel transfer to the lower stage and, at the same time, smoothness (low speed) of this transfer.

But in this case, too, the problem of stability (including dynamic) on the stairs in cases of non-retention by an assistant remains unresolved.

Closest to the claimed utility model for the purpose and combination of design features (prototype) is a wheelchair-lift ("Vehicle, mainly for moving people on stairs") with the possibility of operation on fixed and escalator stairs, containing a chair with a back for accommodating a moving person - a disabled person, a telescopically sliding frame with handles for an accompanying-managing person - an assistant at the ends of the extendable part of the frame and with a latch of the indicated t interconnection, coaxial main wheels, additional wheels spaced forward, a device for moving along the steps of a ladder, which includes lever-walking propellers (“support arms”) connected with a reversible electromechanical drive and an autonomous power supply source, spaced apart along the wheel axis, offset from it in the transverse directions within the radius of the wheels, protruding beyond the outer circumference of the wheels with their ends for interaction with the steps and the possibility of power rotation in the planes, parallel to the planes of rotation of the wheels, and brakes [RU 2368366 C1, A61G 5/06, 09/27/2009].

The reversibility of the lever-walking propeller allowed to abandon the specialized device for smooth descent from the steps (on the basis of the shock absorber).

However, the following disadvantages are also characteristic of such a device. Firstly, as with the analogues described above, the possibility of reliable fixation on the stairs (first of all, on the escalator stairs) in the position of stable equilibrium without an assistant for the time of ascent and / or descent on the escalator (according to the technical requirements of the Metro) is not ensured. Secondly, a similar opportunity is not provided, if necessary or desirable, to arrange a break during the ascent / or descent of a fixed staircase on the flight of stairs (at the subway passages and outside it). Thirdly, in cases of “hard” tipping of the lift carriage back with the frame falling onto the supporting surface due to the principally possible accidental (“human factor”) incontinence (release) of the handles by the assistant, or when the frame is quickly and, moreover, carelessly lowered steps (or other supporting surface), as well as under any other dynamic influences, such as sudden braking / starting the escalator, dynamic loads on the wheelchair-lift, and therefore on the disabled person sitting in the chair, can be significant, unacceptable. All this, accordingly, determines the insufficiently high technical and operational characteristics of the lift carriage.

The task to which the claimed utility model is directed is to improve the technical and operational characteristics of a wheelchair-lift by ensuring the possibility of reliable fixation on the stairs (primarily on the escalator stairs) in a stable position without an assistant for the duration of the ascent and / or descent to escalator (according to the technical requirements of the Metropolitan) or a break during the ascent / descent on the stairwell of the stationary staircase, and the amortization of dynamic effects in this on a wheelchair lift from the side of the stairs.

The solution to this problem is achieved by the fact that a wheelchair-lift with the ability to operate on fixed and escalator stairs, containing a chair with a back and armrests to accommodate a displaced person - a disabled person, a telescopically sliding frame with handles for an accompanying-control person - an assistant at the ends of the extendable part of the frame and with a lock of the indicated telescopic relationship, coaxial main wheels, additional wheels extended forward, a device for moving along the stairs s, which includes lever-walking propellers (“support arms”) connected with a reversible electromechanical drive and an autonomous power source, spaced along the axis of the wheels, displaced from it in the transverse directions within the radius of the wheels, protruding beyond the outer circumferences of the wheels with their ends for interacting with steps and the possibility of power turning in planes parallel to the planes of rotation of the wheels, and the brake, further comprises at least one remote into the space behind the back of the seat from its inoperative position fixed, an elastic support with a friction-fifth at the free end, wherein the fixed operating position (foot in contact with the heel stage) corresponds to the stable static equilibrium wheelchair of a disabled person, at least for the escalator stairs without retaining assistant.

The solution of this problem is also achieved due to additional structural features (with the above main set of features):

- the elastic frictional heel of the support can be made in the cross section Τ-shaped, with the possibility of partial elastically deformable penetration of the narrowed plate-like end into the longitudinal grooves of the standard escalator stage under the influence of the reaction force on the weight of the stroller, at least without a wheelchair;

- with the previous set of signs, the thickness of the narrowed plate-shaped end of the elastic friction foot of the support can be commensurate with the width of the longitudinal groove of the escalator step, and its length can exceed the depth of the latter by the value of the longitudinal elastic deformation under the influence of the reaction force on the weight of the stroller without a wheelchair, with the possibility of power strut the walls of the longitudinal groove of the stage and the subsequent manual extraction from it at full payload of the stroller;

- an elastic friction heel can be mounted telescopically on the support through a compression spring, with the possibility of shock absorption by the spring of the dynamic interaction of the heel with the step;

- the support can be made hinged from a non-working person, removed along the frame behind the back of the seat, in a tilted working position;

- with the previous set of signs, in the tilted working position, the support can be perpendicular to the frame at the site of their connection;

- the support can be mounted on the frame with the ability to adjust the reference base distance between the line connecting the contact spots of the main wheels and the contact patch of the foot of the support, respectively, with the steps of the stairs;

- with the previous set of features, the support can be mounted on the frame with the possibility of changing either the connection point with the frame in height or the angle of inclination of the support to the frame, in its working position, in the sector from the side of the main wheels;

- the support can be made in the form of two identical rods spaced across the width of the stroller, commensurate with the armrests, attached to the frame directly at the rear ends of the armrests and in an inoperative position located equidistant below them;

- with the previous set of features, the support can be mounted on the frame with the possibility of changing the angle of its inclination to the frame, in its working position, in the sector from the side of the main wheels;

- the support can be made in the form of additional handles for an assistant spaced across the width of the stroller;

- the support and handles of a carriage can be structurally combined.

Among the known devices and methods, no such combination of essential features would coincide with the declared one. At the same time, it is due to the latter that a new technical result is achieved in accordance with the task.

The drawings show, as examples of the feasibility (industrial applicability) of the claimed utility model, options for its specific structural implementation.

in FIG. 1 shows a general view of a wheelchair-lift (with a disabled person transported) on a subway escalator in an unstoppable assistant (not shown), stationary with respect to the steps of the escalator, with an additional locking support in one of the constructive versions of the latter, side view (left), where α is the angle between the support and the frame in the working tilted position of the support;

in FIG. 2 - a fragment of the device in the section Α-A with a demonstration of the static interaction of the friction foot of the support, the first option (with a non-deformable plate end);

in FIG. 3 - the same, the second option (with a deformable plate end), before the action (A) and after the action (B) of the longitudinal load on the plate end of the friction foot of the support;

in FIG. 4 is a fragment of the device, a rear view of the frame behind the seatback, with a demonstration of the inoperative (retracted, transport) position of the support according to the embodiment of Figure 1 and the possibility of adjusting the basic reference distance between the contact spots of the main wheel and the foot of the support, respectively, with the steps of the escalator, where the h-range regulation of the position of the base of the support;

in FIG. 5 is a fragment of a support in longitudinal section, an option with the installation of the friction heel on the support telescopically through a compression spring;

in FIG. 6 - a variant of the spatial and structural alignment of the support with the armrests, in non-working (under the armrests - dotted line) and working (reclined) positions, side view (left).

A wheelchair-lift with the possibility of operation on fixed and escalator stairs contains (see Fig. 1) a chair 1 with a back 2 and armrests 3, 4 (located in Fig. 1 "paired elements are hereinafter designated by positions in brackets) for placement displaced person - disabled person 5. Chair 1 is mounted on a telescopically sliding frame 6 with handles 7, 8 for an accompanying control person - an assistant (not shown) at the ends of the extendable part of the frame bis with a latch 9 of the indicated telescopic relationship. The lift carriage also contains coaxial main wheels 10, 11 and additional wheels 12, 13 that are carried forward. There is a device for moving along the steps of the stairs, which includes lever-walking propulsors (“support arms”) connected with a reversible electromechanical drive 14 and an autonomous power source 15 ") 16, 17 spaced along the axis of the wheels 10 and 11, respectively, offset from it in the transverse directions within the radii of the wheels 10, 11, protruding beyond the outer circumference of the wheels 10, 11 with their ends to interact with steps 18 and the possibility of power rotation in planes parallel to the planes of rotation of the wheels 10, 11. Brakes are also provided - automatic 19, 20 and parking manual 21, 22.

The lift carriage further comprises at least one extension, into the space behind the back 2 of the seat 1 from its idle fixed position, a support 23 with an elastic friction heel 24 at the free end. The fixed working position of the support 23 in contact of the heel 24 with the step 18 corresponds to a stable static balance of the wheelchair with a disabled person 5, at least on the escalator ladder, without being held by an assistant.

The elastic friction heel 24 of the support 23 can be made in a cross-section Τ-shaped (outside the main metal body of the support 23, i.e., without taking into account the mounting legs inserted into its cavity), with the possibility of partial elastically deformable penetration with a narrowed plate-like end into the longitudinal grooves 25 of the standard escalator stage 18 under the influence of the reaction force on the weight of the stroller, at least without a disabled person 5 (see Fig. 2).

In a preferred embodiment, the thickness of the narrowed plate-like end of the elastic heel 24 can be proportional (sliding fit to the free stop of the end in the bottom of the groove 25) with the width of the groove 25, and its length exceed the depth of the groove 25 by the longitudinal elastic deformation of the plate-shaped end under the action of the reaction force the weight of the stroller without a disabled person, with the possibility of power thrust of the side walls of the groove 25 and subsequent manual removal from it at full payload of the stroller (see Fig. 3).

The heel 24 can be mounted on the support 23 telescopically through the compression spring 26, with the possibility of shock absorption by the spring 26 of the dynamic interaction of the heel 24 with the stage 18 (see Fig. 5).

The support 23, according to the first embodiment, can be hinged out of a non-working position, taken along the frame 6 behind the backrest 2 of the seat 1, of the position in the tilted working position (see Fig. 1, 5). Moreover, in the tilted working position, the support 23 can be perpendicular to the frame 6 at the site of their connection (α = 90 °). There is a “double” support 23 in the frame 6 in the working (tilted) position - the main 27, which is used as a transverse profile element of the frame 6, and an additional 28, “included in the work” due to the initial bending under load.

The support 23 can be mounted on the frame 6 with the possibility of adjusting the reference base distance between the line connecting the contact spots of the main wheels 10, 11, and the contact spot of the heel 24 of the support 23, respectively, with the steps 18 of the escalator or stationary stairs. This can be ensured by the fact that the support 23 can be mounted on the frame with the possibility of changing either the connection point with the frame 6 in height (range h of adjusting the position of the base of the support 23 - see Fig. 4), or the angle α of inclination of the support 23 to the frame 6 , in its working position, in the sector from the side of the main wheels 10, 11. Angular regulation is provided by the corresponding shape and / or arrangement of the stops 27, 28.

The support 23 can be made, according to the second embodiment, in the form of two identical rods 29, 30 spaced across the width of the stroller, commensurate with the armrests 3, 4, attached to the frame 6 directly at the rear ends of the armrests 3, 4 and located in an inoperative position equidistant under them (see Fig. 6 - dotted line). In this case, the spaced support 29-30 can be mounted on the frame 6 with the possibility of changing the angle a, in its working position, in the sector from the side of the main wheels 10, 11 (adjustable emphasis 28).

The support 23 can be made, according to the third embodiment (it is not shown in the figures due to the sufficiency of the verbal description for understanding), in the form of additional handles 7, 8 spaced across the width of the stroller for the assistant.

According to another possible particular embodiment of the device, the support 23 (double) and the carriage handles 7, 8 can be structurally combined (it is also not shown in the figures due to the sufficiency of verbal description for understanding).

The described example of a specific design option does not exclude other possible device options within the scope of the claimed combination of essential design features (see utility model formula).

The inventive device operates as follows.

In the mode of movement on a flat surface (i.e., in the absence of profile obstacles such as stairs, curbs and escalators), a vehicle with a transportable person with a disability 5 moves the assistant, as a rule, in forward gear, resting on all wheels 10-13 or (less often) by two wheels - 10, 11. At the same time, he pre-sets the convenient height of the arms 7, 8 by unlocking (latch 9) and expanding the telescopic part of the frame 6 (extending its movable part) with fixing (the same latch 9) in a new position. This is the usual mode of movement for wheelchairs and freight trolleys. At the same time, the support 23 according to the first constructive variant thereof is in the inoperative (“retracted” position along the frame 6) position, and in the second, under the armrests 3, 4, practically “merging” with the latter.

In the mode of entry to the staircase or other type of escalator (this is primarily about the standard Metropolitan staircase escalator), an assistant (in this case, he may be a temporary full-time employee of the Metro), after transferring support 23 from a non-working position to a working one, rolls up a wheelchair with a disabled person or, in principle, without it), using the handles 7, 8 in the direction of movement for lifting or against the movement for lowering, onto the escalator and lowering it with the handles 7, 8 down to the power (mainly under the action of gravity of the corresponding part wheelchairs with a disabled person 5) contact with stage 18 (see Fig. 1).

In a constructive embodiment, characterized by the presence of a spring 26 in the support 23, the possible accidental premature release by the assistant of the arms 7, 8 will not lead to a sharp dynamic interaction of the lift carriage with the stage 18 due to the shock absorption by the spring 26 (see Fig. 5).

In a constructive embodiment, characterized by a T-shaped transverse profile of the heel 24, the plate-shaped “leg” of the latter is recessed into a sliding fit into one of the numerous grooves 25 of the standard escalator stage 18 and “sits” on the upstream thicker elastic part with deformation of the latter under the influence of the reaction force on the weight of the stroller (see Fig. 2).

When the device according to the embodiment of FIG. 3, due to the volume expansion, the plate-shaped end is jammed in the groove 25 (goes into a state of “disputes”)

In both cases, structural measures, due to increased rest friction, contribute to the retention (fixation) of the lift carriage (in addition to the efficiency of automatic and parking hand brakes 19-22, as well as other rest and friction forces of the wheels) on the escalator even case abrupt stop it.

This ensures a smooth transition of the lift carriage into the transport mode on the escalator in a stable position without the assistance of an assistant.

An angle α equal to or close to 90 ° is the most “stable” with respect to the support 23 and causes minimal bending moments, and the presence of two spaced apart, along the length of the support 23, stops 27, 28 provide effective fixation of the support 23 in the working position with the restriction bending stresses in it.

In the case of operation of the device on stairs with a different size of steps 18, the support 23 is mounted with the possibility of changing either the connection point with the frame 6 in height (the range of h adjusting the position of the base of the support 23 - see Fig. 3), or the angle α of inclination of the support 23 to the frame 6, in its working position, in the sector from the side of the main wheels 10, 11. In particular, the heel 24 can be set in the most stable position due to such adjustment, directly in the angle formed by adjacent steps 18 (see Fig. 6).

When supporting according to its second variant - in the form of two identical rods 29, 30 spaced across the width of the stroller, commensurate with the armrests 3, 4, they provide the greatest lateral stability of the lift carriage (due to the maximum possible base in the dimensions of the lift carriage), and in in the idle position, the support 29-30 is “perfectly” assembled under the armrests 3, 4 (see. Fig. 6).

When carrying out the support 23 according to its third variant - in the form of additional handles for the assistant spaced across the width of the stroller, their role as a double support is similar to the “specialized” double support 23, but they are two-functional: they combine the function of the handles 7, 8 for the assistant - the main or additional (for transportation of a wheelchair-lift outside the stairs).

With a constructive combination of the support 23 (double) and the handles 7, 8, the latter are also dual-functional and the support on the escalator is carried out by lowering the wheelchair-lift on them.

The operation of the device on stationary stairs in situations where the assistant needs to consciously temporarily release the handles 7, 8 or this will happen unexpectedly, is similar to that described, but, naturally, without additional friction of the ankles 24 due to the absence of grooves 25.

Upon overcoming profile obstacles in the form of an escalator or stationary stairs, the assistant relocates the specialized support 23 to the inoperative (retracted, folded) position (see Fig. 4). Moreover, the heel even in the second embodiment (see FIG. 3) is manually removed with a reasonably sufficient (ergonomically acceptable) effort from the assistant.

In other modes, including moving on a horizontal surface, the wheelchair-lift is operated similarly to the prototype and other analogues.

The use of the invention allows to improve the technical and operational characteristics of a wheelchair-lift due to the possibility of reliable fixation on the stairs (especially on the escalator stairs) in a stable position without an assistant for the time of ascent and / or descent on the escalator (according to the technical requirements of the Metro) or a break during the ascent / descent on the flight of stairs of the stationary staircase, and the dynamic impacts are damped while the lift carriage is on the side of the stairs tsy.

Claims (13)

1. Wheelchair-lift with the possibility of operation on fixed and escalator stairs, containing a chair with a back and armrests to accommodate a disabled person, a telescopically sliding frame with handles for an accompanying-control person - an assistant at the ends of the extendable part of the frame and with a telescopic latch interconnections, coaxial main wheels, forward wheels extended forward, a device for moving along the steps of the stairs, which includes those connected with the reverse lever electromechanical drive and a source of autonomous power supply, lever-walking propellers spaced along the axis of the wheels, displaced from it in the transverse directions within the radius of the wheels, protruding beyond the outer circumference of the wheels with their ends for interaction with steps and the possibility of force rotation in planes parallel to the planes of rotation of the wheels , and brakes, characterized in that it further comprises at least one remote into the space behind the seatback from its idle fixed position tions support with elastic fifth friction at the free end, wherein the fixed operating position in contact with the heel of the step corresponds to the stable static equilibrium wheelchair of a disabled person, at least for the escalator stairs without retaining assistant. 2. Wheelchair-lift according to claim 1, characterized in that the elastic frictional heel of the support is made in cross section Τ-shaped with the possibility of partial elastically deformable penetration with a narrow plate-like end into the longitudinal grooves of a standard escalator stage under the influence of the reaction force on the weight of the stroller, at least least without a disabled person. 3. The wheelchair-lift according to claim 2, characterized in that the thickness of the narrowed plate-shaped end of the elastic friction foot of the support is commensurate with the width of the longitudinal groove of the escalator step, and its length exceeds the depth of the latter by the amount of longitudinal elastic deformation under the influence of the reaction force on the weight of the stroller without a disabled person with the possibility of forceful expansion of the side walls of the longitudinal groove of the stage and subsequent manual extraction from it at full payload of the stroller. 4. The wheelchair-hoist according to claim 1, characterized in that the elastic friction heel is mounted telescopically on the support through the compression spring with the possibility of shock absorption by the spring of the dynamic interaction of the heel with the step. 5. The wheelchair-lift according to claim 1, characterized in that the support is hinged from a non-working person, removed along the frame behind the seat back of the position to the tilted working position. 6. Wheelchair-lift according to claim 5, characterized in that in the tilted working position, the support is perpendicular to the frame at the site of their connection. 7. Wheelchair-lift according to claim 1, characterized in that the support is mounted on the frame with the ability to adjust the reference base distance between the line connecting the contact spots of the main wheels and the contact patch of the foot of the support, respectively, with the steps of the stairs. 8. Wheelchair lift according to claim 7, characterized in that the support is mounted on the frame with the possibility of changing the place of its connection with the frame in height. 9. Wheelchair lift according to claim 7, characterized in that the support is mounted on the frame with the possibility of changing the angle of its inclination to the frame in the working position of the support in the sector from the side of the main wheels. 10. Wheelchair-lift according to claim 1, characterized in that the support is made in the form of two identical rods spaced across the width of the stroller, commensurate with the armrests attached to the frame directly at the rear ends of the armrests and in an inoperative position located equidistant under them. 11. Wheelchair-hoist according to claim 10, characterized in that the support is mounted on the frame with the possibility of changing the angle of inclination of the support to the frame in its working position in the sector from the side of the main wheels. 12. Wheelchair-lift according to claim 1, characterized in that the support is made in the form of additional handles for the assistant spaced across the width of the wheelchair. 13. Wheelchair lift according to claim 1, characterized in that the support and the handle of the stroller are structurally combined.

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