A powertrain for a crawler tractor

Abstract

A power assembly for a crawler tractor, comprising an engine, a steering pump driving device, a steering pump, a clutch, a shuttle gear device, a main transmission device, an auxiliary transmission device, a power output, and a main reduction gear composed of a small bevel gear and a large bevel gear device, a differential steering device group composed of a first differential steering device and a second differential steering device, and a driving wheel; the present invention adopts the auxiliary transmission device and the main transmission device staggered; the main transmission device and the auxiliary transmission can be realized. The common gears between the devices reduces the number of transmission gears and shortens the axial distance of the gearbox; the dual power confluence technology of the planetary gear train and the idler and three-stage gear reduction; the steering process is precise and can be continuously changed. The controllability is good, the left and right wheels can rotate in opposite directions, and the in-situ steering can be realized; the pump drive device is set before the main clutch; the steering action is not affected by the main clutch cut off, and the steering safety of the tractor is high when shifting gears.

Description

technical field [0001] The invention belongs to the technical field of tractors, and in particular relates to a power assembly for a crawler tractor. Background technique [0002] At present, on various types of crawler tractors produced in China, there are many gearbox shafts, shaft-on-shaft structures, gear shafts, and multiple gears, which are difficult to process; the vertical dimension is large, the structure quality is large, and the center of gravity In addition, the steering mechanism of general crawler tractors in my country mainly adopts steering clutch type steering mechanism, which has rough steering and poor controllability; some commonly used differential steering crawler tractors, steering pump It is often fixed after the clutch and the power is cut off, which will cause the steering to lose power and the action to fail. SUMMARY OF THE INVENTION [0003] In view of this, in order to solve the above-mentioned deficiencies of the prior art, the purpose of the p...

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Problems solved by technology

[0002] At present, on various types of crawler tractors produced in China, there are many transmission shaft sleeve shafts, shaft-on-shaft structures, gear shafts, and multiple gears, which are difficult to process; the vertical dimension is large, the structural mass is large, and the center of gravity high, poor driving stability, and poor passability in paddy fields; in addition, the steering mechanism of general crawler tractors in my country mainly adopts steering clutch steering mechanism, which is rough in steering and poor in controllability; some commonly used crawler tractors with differential steering, steering pump Often fixed behind the clutch, the power is cut off, which will cause the steering to lose power and the action will fail

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