RU2812375C1 - Wheel-walking chassis - Google Patents

Abstract

FIELD: off-road vehicles.

SUBSTANCE: invention can be used as a chassis for wheelchairs. The wheel-walking chassis consists of three satellite rollers driven by a central wheel. The pneumatic central wheel for movement in wheeled mode has three levers with satellite rollers at the ends of the levers in the upper part of the pneumatic wheel, which are equipped with mechanisms for rotating the levers around the axis of rotation of the central wheel and fixing them relative to each other through 120°, providing frictional connection of satellite rollers with the central wheel for movement in wheel-walking mode.

EFFECT: simplification and unification of the technology for manufacturing wheelchair chassis for overcoming obstacles.

3 cl, 3 dwg

Description

The invention relates to transport engineering, in particular to off-road vehicles, and can be used as a chassis for wheelchairs to overcome public staircases.

A wheeled-walking type chassis is known/see. Pat. USA No. 3348518 dated 10.24.1967/, consisting of two onboard pairs of propulsors, each of which consists of three low-pressure pneumatic satellite rollers located at the ends of one of the three radial brackets of the assembly, and a sun gear of the satellite roller drive mechanism in wheel mode ; To move the chassis in wheel-walking mode, there is an additional drive.

With all the advantages of the design scheme of the well-known prototype chassis, which can be used as a wheelchair chassis for movement on hard surfaces (asphalt, concrete, etc.) with obstacles in the form of ditches, thresholds, curbs, scarps, including flights of stairs for general use, it can be improved with the aim of simplifying and unifying the manufacturing technology of wheelchair chassis for overcoming obstacles in the form of ditches, thresholds, curbs, scarps, including public staircases.

The stated goal is achieved by the fact that in a wheel-walking type chassis, consisting of three side satellite rollers driven into rotation by a central wheel, the central pneumatic wheel for movement in wheeled mode has three levers with satellite rollers at the ends of the levers in the upper part of the pneumatic wheels, which are equipped with mechanisms for turning the levers around the axis of rotation of the central wheel and fixing them relative to each other through 120°, ensuring frictional connection of the satellite rollers with the central wheel for movement in wheel-walking mode. In this case, the mechanism for turning the levers with satellite rollers at the ends of the levers can be made according to an antiparallelogram scheme. In this case, satellite rollers can be pneumatic or frame, as shown in Fig. 3, execution.

The technical solution proposed by the invention is illustrated in Fig. 1 (side view of the chassis for movement in wheeled mode), FIG. 2 (side view of the chassis for movement in wheel-walking mode) and FIG. 3 (a variant of the frame version of the satellite skating rink - the author's know-how).

The wheel-walking type chassis proposed by the invention consists of three side satellite rollers, driven into rotation by a central wheel. In this case, the central pneumatic wheel for movement in wheeled mode has three levers with satellite rollers at the ends of the levers in the upper part of the pneumatic wheel, which are equipped with mechanisms for rotating (not shown in the figure) the levers around the axis of rotation of the central wheel and fixing them relative to each other through 120°, providing frictional connection of satellite rollers with the central wheel for movement in wheel-walking mode. In this case, the mechanism for turning the levers with satellite rollers at the ends of the levers can be made according to an antiparallelogram scheme. In this case, satellite rollers can be pneumatic or frame, as shown in Fig. 3, execution.

Frame-made satellite rollers (see Fig. 3) can be the author's know-how, which does not require an explanation of the manufacturing technology and an indication of the best or optimal material for implementation.

The central pneumatic wheel can be, for example, a sixteen-inch Smart Eco Koleso wheel.

A wheelchair with the proposed chassis of a wheeled-walking type is capable of moving back and forth, repeating the movements of wheelchairs on wheels, tracked and wheeled-tracked, and is capable of turning and turning along the track in wheeled mode; in the wheel-walking mode, a wheelchair with the proposed chassis is capable of overcoming obstacles in the form of ditches, thresholds, curbs, scarps, including public staircases, which is clear to a specialist from Fig. 2.

Thus, in the opinion of the applicant, the technical solution proposed by the invention is new, has an inventive step and is industrially applicable, simplifies and unifies the technology for manufacturing wheelchair chassis for overcoming obstacles in the form of ditches, thresholds, curbs, scarps, including public staircases .

Claims (3)

1. A chassis of a wheel-walking type, consisting of three side satellite rollers driven by a central wheel, characterized in that the central pneumatic wheel for movement in wheeled mode has three levers with satellite rollers at the ends of the levers in the upper part of the pneumatic wheel , which are equipped with mechanisms for turning the levers around the axis of rotation of the central wheel and fixing them relative to each other through 120°, providing frictional connection of the satellite rollers with the central wheel for movement in wheel-walking mode. 2. Chassis according to claim 1, characterized in that the mechanism for turning the levers with satellite rollers at the ends of the levers can be made according to an anti-parallelogram pattern. 3. Chassis according to claim 1 or 2, characterized in that the satellite rollers can be pneumatic or frame.

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