Four-connecting-rod steering device

Abstract

The invention discloses a four-connecting-rod steering device and aims at providing the four-connecting-rod steering device capable of realizing the 0 to 180-degree steering to realize various steering modes of vehicles and to adapt to small-field operation requirements. The four-connecting-rod steering device comprises a steering hydraulic cylinder, an arc-shaped steering arm, a rotating shaft, a rotary support arm, a steering shaft and a push rod, wherein the steering hydraulic cylinder is hinged with a hydraulic cylinder seat, a piston rod of the steering hydraulic cylinder, one end of the arc-shaped steering arm and one end of the push rod are hinged at one point, the other end of the arc-shaped steering arm is hinged with a vehicle frame through the rotating shaft, the other end of the push rod is hinged with the rotary support arm, the rotary support arm is connected with the steering shaft, the steering shaft is fixedly connected with a wheel support frame, and steering wheels are arranged on the wheel support frame. The steering device can ensure that wheels can realize the 0 to 180-degree steering, so the steering requirements in various steering modes of the vehicles can be met, and the operation adaptability in narrow and small fields is high.

Description

Technical field [0001] The invention relates to a four-link steering device. Background technique [0002] Due to the limitation of structure and size, ordinary steering devices will mechanically lock up when the wheels turn to a certain angle, and the steering angle is relatively small; while the conventional four-bar linkage mechanism will also have a similar mechanical lock-up phenomenon. Therefore, ordinary steering devices or conventional four-link steering devices will cause the steering angle of the vehicle to be small and the steering radius is large, which is not suitable for the needs of working in a narrow field. Summary of the invention [0003] In order to overcome the shortcomings in the prior art, the present invention provides a four-link steering device capable of realizing 0°-180° steering of wheels, enabling the vehicle to realize various steering functions, and adapting to the needs of narrow ground operations. [0004] The present invention is realized through ...

AI Technical Summary

Problems solved by technology

[0002] Due to the limitation of the structure and size of the ordinary steering device, when the wheels turn to a certain angle, mechanical lock will occur, and the steering angle is small; while the conventional four-bar linkage mechanism will also have a phenomenon similar to mechanical lock.

Therefore, the ordinary steering device or the conventional four-link steering device will cause the steering angle of the vehicle to be small and the steering radius to be large, which is not suitable for the needs of small and small sites.

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