Self-locking differential track steering drive system

Abstract

The invention discloses a self-locking differential type caterpillar band steering drive system. The self-locking differential type caterpillar band steering drive system comprises a rack, a power input shaft installed on the rack, and a spindle installed on the rack. The two ends of the spindle are each provided with a planetary gear type output mechanism. The power input shaft is connected with the spindle through a first transmission mechanism. Each planetary gear type output mechanism comprises a sun wheel, an inner gear ring, a planetary rack and a planetary wheel, wherein an output shaft is connected to the planetary rack. The caterpillar band steering drive system further comprises a self-locking steering drive device for driving the inner gear rings of the two planetary gear type output mechanisms to rotate synchronously and reversely. The self-locking differential type caterpillar band steering drive system has the advantages of being simple in structure, easy to manufacture, stable and reliable in operation, good in steering performance, high in maneuverability and flexibility, and the like.

Description

technical field [0001] The invention relates to the technical field of crawler-type traveling equipment, in particular to a self-locking differential crawler steering drive system. Background technique [0002] At present, the common crawler steering mechanism can be divided into three categories: pure mechanical drive steering mechanism, pure hydraulic drive steering mechanism and hydraulic-mechanical combined drive steering mechanism. [0003] Purely mechanically driven steering mechanisms mainly include steering clutch brake steering mechanisms, single-stage planetary gear steering mechanisms, single differential steering mechanisms, and double differential steering mechanisms. Among them, 1. Steering clutch brake type steering mechanism When the steering clutch on a certain side is partially or completely disengaged, it can cut off or reduce the force and torque transmitted by the driving wheel on this side to steer the vehicle. The degree of clutch disengagement determ...

AI Technical Summary

Problems solved by technology

This mechanism has high wear resistance, compact size, no maintenance, and only one degree of freedom, which can improve the straight-line driving ability of tracked vehicles, but because of its complex structure, it is only used on high-power heavy-duty vehicles

3. The structure of the single differential steering mechanism is simple and wear-resistant, but the power required for steering will be very large, exceeding the power limit of conventional engines, and it will stall if you are not careful

The traditional mechanical steering mechanism has shortcomings such as large power loss during steering and difficult control of the steering trajectory. The pure hydraulic steering mechanism has shortcomings such as low efficiency and cannot meet its use requirements.

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