Double-power-flow power differential steering mechanism for tracked vehicle

Abstract

The invention relates to a differential steering mechanism of a tracked vehicle, in particular to a double-power-flow power differential steering mechanism for a tracked vehicle. A symmetric bevel gear differential mechanism, a first planet row and a second planet row are arranged in a steering mechanism shell (10); a left end output shaft (6), a right end output shaft (18), two half axle gears ofthe symmetric bevel gear differential mechanism, a sun wheel axle of the first planet row and a sun wheel axle of the second planet row are positioned on the same axis; a first gear (1) on a shaft ofa driving motor (2) is fixed on a main speed reducer driven gear (8) on a differential mechanism shell (11) in an engagement transmission manner; the left end output shaft (6) is connected with the first half axle gear (5); the right end output shaft (18) is connected with the second half axle gear (20) and a second sun wheel (17) of the second planet row; and a second gear (25) on an output shaft of a steering motor (24) is in engagement transmission with a large cylindrical gear (12). A mechanical structure is simplified, and the use performance of the machinery is improved. The differential steering mechanism can steer in situ around the center of the differential steering mechanism, meets different steering requirements, has a function of averagely distributing torque, and has functions of a differential lock.

Description

technical field [0001] The invention relates to a differential steering mechanism of a crawler vehicle, in particular to a dual power flow differential steering mechanism which can enable a crawler vehicle or a balanced rocker chassis vehicle to turn in situ or turn according to any radius. Background technique [0002] There are many obvious disadvantages in the single-power steering mechanism of traditional crawler vehicles or balanced rocker chassis vehicles: the vehicle has only a few fixed turning radii, and when turning according to non-specified turning radii, it must be realized by the sliding of friction elements. It is difficult to obtain a stable and accurate steering radius; during the steering process, the severe sliding of the friction elements will cause heat and wear, which will reduce the transmission efficiency and make the steering unstable and unreliable, especially in the high-power steering working state. There is a large power loss, so it is often nece...

AI Technical Summary

Problems solved by technology

[0002] There are many obvious disadvantages in the single-power steering mechanism of traditional crawler vehicles or balanced rocker chassis vehicles: the vehicle has only a few fixed turning radii, and when turning according to non-specified turning radii, it must be realized by the sliding of friction elements. It is difficult to obtain a stable and accurate steering radius; during the steering process, the severe sliding of the friction elements will cause heat and wear, which will reduce the transmission efficiency and make the steering unstable and unreliable, especially in the high-power steering working state. There is a large power loss, so it is often necessary to slow down the steering; the severe friction also makes the mechanism easy to damage, resulting in poor reliability and shortened life.

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