Multi-mode composite steering chassis and engineering machinery vehicle

Abstract

The invention discloses a multi-mode composite steering chassis and an engineering machinery vehicle. The multi-mode composite steering chassis comprises a front vehicle frame, a rear vehicle frame, aplurality of wheels arranged on the front vehicle frame and the rear vehicle frame respectively, driving devices corresponding to the wheels, wheel steering devices corresponding to the wheels, and avehicle control unit. The multi-mode composite steering chassis has the advantages that high-speed and low-speed driving and various steering modes can be achieved, the universalization degree is high, the modular design is achieved, the design period of new products can be shortened to a certain extent, and the purchasing cost is reduced; a manual mode and an automatic mode are adopted to selecta steering mode so that a smaller turning radius at a low rotating speed and the steering running stability of the vehicle at a high rotating speed can be realized, and the steering capacity and thepassing capacity of the vehicle are improved; and meanwhile, mechanical limiting and sensor signal acquisition are added so that the driving safety is improved.

Description

technical field [0001] The invention relates to a multi-mode composite steering chassis and an engineering machinery vehicle, belonging to the technical field of engineering machinery. Background technique [0002] Existing construction machinery vehicle steering systems include Ackermann steering, articulated steering, rear wheel steering, and skid steering. Ackermann steering is inherited from the automobile steering system. The system structure is stable. In order to reduce the steering radius of the vehicle, four-wheel steering appeared later on the basis of two-wheel steering, which improved the mobility of the vehicle to a certain extent, but For construction machinery vehicles, the improvement of adhesion characteristics is limited. Articulated steering is mainly aimed at vehicles such as loaders and articulated trucks that require high adhesion characteristics on soft ground. It has a small turning radius, but the speed of the vehicle should not be too high, otherwi...

AI Technical Summary

Problems solved by technology

Ackermann steering is inherited from the automobile steering system. The system structure is stable. In order to reduce the steering radius of the vehicle, four-wheel steering appeared later on the basis of two-wheel steering, which improved the mobility of the vehicle to a certain extent, but For construction machinery vehicles, the improvement of adhesion characteristics is limited

Articulated steering is mainly aimed at vehicles such as loaders and articulated trucks that require high adhesion characteristics on soft ground. It has a small turning radius, but the speed of the vehicle should not be too high, otherwise it will affect the stability of the vehicle

Rear wheel steering is generally used for vehicles with large load on the front axle and low speed and narrow working conditions, such as forklifts and reach stackers, and cannot be widely used due to speed restrictions

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