Integrated comprehensive type hydrostatic driving stepless transmission mechanism for high-speed track-laying vehicle

Abstract

The invention relates to an integrated comprehensive type hydrostatic driving stepless transmission mechanism for a high-speed track-laying vehicle and belongs to the technical field of vehicle engineering. The mechanism utilizes elements of civil volume-adjustable hydraulic pumps and volume-adjustable hydraulic motors to enable two groups of the volume-adjustable hydraulic pump and motor mechanisms to be parallelly connected and integrated on an integrative box. Two hydraulic pump spline shafts are in parallel and synclastic arrangement, two hydraulic motor spline shafts are coaxially and reversely arranged, the hydraulic pump spline shaft and the hydraulic motor spline shaft of each group of the volume-adjustable hydraulic pump motor mechanism are in 90-degree arrangement, each group of the hydraulic pump motor mechanism drives a driving wheel on one side of the track-laying vehicle, synchronization and differential speed between driven wheels on two sides are realized by means of hydrostatic stepless speed-adjusting, and organic combination of a straight-driving speed-changing function and a hydraulic steering function of the vehicle are realized. Structurally reliable connection bodies and flow-allocation bodies are adopted to connect high-and-low oil ways of hydraulic pumps and hydraulic motors to form the integrated transmission mechanism to meet requirements on high integration level of engine compartment, convenience in quick maintaining and the like of the track-layer vehicle.

Description

technical field [0001] The invention relates to a hydrostatically driven stepless transmission mechanism for a high-speed crawler vehicle, in particular to an integrated and comprehensive hydrostatically driven stepless transmission mechanism, which belongs to the technical field of vehicle engineering. Background technique [0002] The vehicle transmission system is a key component to expand the limited speed and torque range of the engine to meet the needs of high-speed tracked vehicles on complex roads and other working conditions, and determines the maneuverability of the vehicle. How to maintain a reasonable match between the engine and the external load through the transmission system most simply and appropriately is one of the difficult problems in the field of vehicle engineering technology. The multi-gear stepped transmission device widely used at present cannot realize the most reasonable match between the engine and the external load, and the shifting operation ne...

AI Technical Summary

Problems solved by technology

However, the traditional arrangement of wheel-side hydraulic drive uses hydraulic components such as pumps and motors to be installed separately at the side drive. Although the advantages of flexible layout of hydraulic drive are used, it leads to low integration, especially not suitable for emergency situations. The rapid disassembly and replacement of the lower power cabin seriously restricts the application of hydrostatically driven stepless transmission technology on high-speed tracked vehicles

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