A double-flow steering tracked vehicle speed change transmission device

Abstract

A double-flow steering crawler vehicle speed change transmission device, including a speed change transmission assembly installed in a box assembly, a differential steering assembly, a double-flow drive assembly, a left drive assembly, a reversing operation assembly, and a right drive assembly, wherein the speed change transmission assembly It is connected with the differential steering assembly, the differential steering assembly is connected with the dual-flow drive assembly, the dual-flow drive assembly is connected with the left drive assembly and the right drive assembly, and the left drive assembly and the right drive assembly are connected with the reversing operation assembly, using HST stepless steering and Mechanical multi-speed driving forms power dual-flow input to realize differential steering on both sides of the track, the steering radius can be continuously changed, and the steering is precise; under the condition of coaxial differential power steering input, the left and right steering input power speeds are the same and the steering is opposite , compact structure, and reliable operation; and the left and right shift fork shafts of the reversing operation assembly are arranged symmetrically around the support seat, realizing one-lever operation switching between forward and backward, and the operation is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of speed change transmission, in particular to a double-flow steering tracked vehicle speed change transmission device. Background technique [0002] For a tracked vehicle running on two tracks, when there is a speed difference between the left track and the right track, the tracked vehicle can turn. At present, the commonly used driving schemes include electric transmission, hydraulic transmission and mechanical transmission. Due to the high efficiency of mechanical transmission, it is widely used. In the mechanical transmission scheme, there are mainly single-flow transmission and double-flow transmission. ) tracked vehicle transmission with input power, usually two sets of planetary gear mechanisms are used to make the power input by the transmission mechanism and the power input by the steering mechanism parallel and then converge. The power input by the transmission mechanism is input by the ring gear o...

AI Technical Summary

Problems solved by technology

In the dual-flow transmission scheme, if the steering input power adopts continuously variable speed input, the steering is flexible, the steering radius can be continuously changed, the steering angular speed is proportional to the rotational speed input by the steering mechanism, the steering is precise, and the performance is superior; In the dual-flow transmission scheme, the steering operation direction of the steering operating mechanism (steering wheel or steering rod) remains unchanged (for example, for the steering wheel type steering operating mechanism, the steering wheel is biased to the left or right when moving forward and backward), Take operating the steering mechanism to the left as an example. When moving forward, operate the steering mechanism to the left. After the power is converging, the left crawler decelerates and the right crawler accelerates, and the tracked vehicle turns to the left. , the shift input power is reversed, but the direction of the steering input power remains unchanged. Although the tracked vehicle is running backwards, the deflection direction of the steering mechanism remains unchanged, so the change law between the left track and the right track remains unchanged, that is: left The side crawler decelerates relative to the forward direction, and the right crawler accelerates relative to the forward direction (ie: the left crawler accelerates and reverses, and the right crawler decelerates and reverses), and the tracked vehicle reverses to the right; Steering to the right when turning back, causing operational difficulties and even safety accidents

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