Vehicle complete fluid pressure turning drive bridge

Abstract

The invention relates to a vehicle full-hydraulic steering drive axle, which includes an axle housing, and steering knuckles are hinged at both ends of the axle housing. The steering knuckle is connected with a hydraulic motor, and a service brake and a parking brake are installed on the hydraulic motor. , which is characterized in that the two ends of the axle housing are hinged with the steering knuckle through the upper and lower hinge seats, wherein the upper hinge seat is hinged with the steering knuckle by installing a high-pressure rotary joint, and a double Piston rod hydraulic cylinder, the cylinder body of the double piston rod hydraulic cylinder is fixedly connected with the axle housing, the two piston rod ends of the double piston rod hydraulic cylinder are hinged with the steering rocker arms at the left and right ends, and the other end of the steering rocker arm One end is respectively hinged with the steering knuckles at both ends, and the steering knuckle is driven to swing left and right around the upper and lower hinge seats of the axle housing. The invention has the advantages of simple and reasonable structural arrangement, high power density ratio, large starting torque, stable low-speed operation, small turning radius and good performance; the connection of hydraulic pipelines is more reliable, and the use and sealing performance are better.

Description

technical field [0001] The invention relates to a vehicle full-hydraulic steering drive axle, which is especially suitable for steering and driving of special wheeled lifting transport vehicles. Background technique [0002] Special wheeled lifting transport machinery works in the environment of airports, ports, warehouses, ships, etc., loaded with precision and valuable equipment, requires stable operation, small turning radius to adapt to flexible movement in narrow venues, and must have sufficient climbing ability , to improve its passability, and to be able to self-drive on the transport plane through the boarding bridge during transfer transport. [0003] The drive axles used in this type of machinery are found in the literature in the following three situations: [0004] 1. Mechanical transmission steering drive axle. This method mainly has the following problems: [0005] 1. The structure of the system is complicated. The multi-stage gear shifting and shifting mech...

AI Technical Summary

Problems solved by technology

These requirements make the main reducer of the mechanical transmission drive axle bulky, large in mass, and large in inertia, which greatly reduces the ground clearance of the bridge and reduces the trafficability of the machinery.

[0007] 3. The gears are limited, the speed is limited, the output force is limited, the shifting is not smooth, and the impact is large

Compared with the mechanical transmission type drive axle, this kind of full hydraulic drive axle has the characteristics of high power density ratio, light weight, simple structure and convenient operation, but the motor reducer is slightly larger and it is difficult to realize the steering function.

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