Wheel retracting and extending device for amphibious vehicle

Abstract

The invention belongs to a wheel retracting and extending device for an amphibious vehicle. The wheel retracting and extending device comprises chain transmission boxes (2) mounted on the inner sides of wheels (1); the upper ends of the chain transmission boxes (2) are hinged to two four-connecting-rod mechanisms, and each of the four-connecting-rod mechanisms consists of a lower connecting rod (3), a wheel rim rocker arm (5), an upper connecting rod (6) and an inner side rocker arm (8) which are hinged to each other. The wheel retracting and extending device is characterized in that a hinge connection point B at the upper end on the inner side of the four-connecting-rod mechanism on the right side is driven by an oil cylinder (11); the hinge connection points B of the four-connecting-rod mechanisms are hinged to one end of each of synchronous connecting rods (10); the other ends of the synchronous connecting rods (10) are hinged to rocker arms (12); and the centers of the rocker arms (12) are connected with a synchronous rotating shaft (9). The wheel retracting and extending device disclosed by the invention is compact in structure, large in wheel retracting range, easy to form self-locking when the wheels are extended, and smooth in traveling; and besides, the oil cylinder is functionally separated from a shock absorber, the service life is long, the structure is simple, the processing is easy, and the cost is low.

Description

technical field [0001] The invention belongs to components of an amphibious vehicle, in particular to a retractable wheel device for an amphibious vehicle. Background technique [0002] Water navigation speed is an important indicator of amphibious vehicles. Compared with boats, amphibious vehicles have a complex structure, heavy weight and deep water draft; the streamlined body is damaged by wheels and wheel suspensions; resulting in high navigation resistance. Therefore, most amphibious vehicles adopt a retractable wheel structure, and when driving in water, the wheels are retracted above the water surface to reduce resistance. To achieve the purpose of increasing the speed of the vehicle. And the quality of retractable wheel device design directly affects the size of land driving performance and water navigation resistance. [0003] At present, relatively mature amphibious vehicle products include Humingda, Gibbs Humdinga and Gibbs Quadski of the British Gibbs Company,...

AI Technical Summary

Problems solved by technology

Domestic research and development of amphibious vehicles started relatively late, and there is a big gap compared with foreign countries

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