Vehicle complete fluid pressure turning drive bridge

Abstract

The invention relates to a vehicle whole hydraulic pressure turn driving axle comprising vehicle bridge shell, knuckle hinged with the two ends of the vehicle bridge shell, hydraulic motor coupled with the knuckle, bicycle brake and packing brake, characterized in that the two ends of vehicle bridge shell are hinged with the knuckle by the up and down free bearing, wherein the up free bearing is hinged with the knuckle by the high pressure rotating joint, a double-piston rod hydraulic cylinder is mounted in the middle of the vehicle bridge shell, wherein the cylinder body of the double-piston rod hydraulic cylinder is coupled with the vehicle bridge shell and the two rod ends of the piston rod of the double-piston rod hydraulic cylinder are hinged with the steering arms of left and right end and the other end of the steering arm is respectively hinged with the two ends of the knuckle, and the knuckle is driven to sway along the up and down free bearing of the vehicle bridge shell. The invention has features of simplicity, reasonableness, high power density ratio, big starting torque, slow running, small turning radius, good performance, more reliable linkup of the hydraulic piping, better usage and sealing performance.

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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