Zero-radius steering walking speed change box for combine harvester

Abstract

The invention discloses a zero-radius steering walking speed change box for a combine harvester, comprising a speed change mechanism, a steering mechanism and a speed reduction mechanism, wherein the speed change mechanism, the steering mechanism and the speed reduction mechanism are arranged in the speed change box body; the speed change mechanism drives the steering mechanism; the steering mechanism drives the combine harvester to walk via the speed reduction mechanism, and comprises a steering shaft; the steering shaft is provided with a central transmission gear with clutches at two sides; the left and right sides of the central transmission gear with clutches at two sides are respectively provided with symmetrical clutch gears, shift forks, pressure plates, tensioning springs, steering clutches and steering clutch gears; the clutch gears are movably connected with the central transmission gear under the driving of the shift forks; the shift forks push the pressure plates so that the steering clutches are combined with each other to realize power transmission; one end of each of the tensioning springs butts against the pressure plates, and the other end of each of the tensioning springs butts against the steering clutches; and the steering clutch gears drive the clutch gears via the combination of the steering clutches. The zero-radius steering walking speed change box in the invention realizes zero-radius steering of the combine harvester, improves the maneuverability of the combine harvester and reduces idle strokes and energy consumption.

Description

technical field [0001] The invention relates to a grain harvesting machine, which is applied to a half-feeding and full-feeding rice-wheat combine harvester, other crop harvesting machines and engineering machines. Background technique [0002] The traveling mechanism is the main functional part of the combine harvester, which affects the passability and operation quality of the machine. The semi-feeding rice and wheat combine harvesters all adopt rubber crawler type traveling mechanism, and its core is the traveling gearbox. Steering performance is one of the main signs for judging the quality of a walking gearbox. The steering mechanism of this type of transmission is composed of jaw clutch, friction plate steering clutch and operating device, and the steering is realized by cutting off the power of the unilateral jaw clutch or braking the steering clutch: when the machine is going straight, the jaw clutch The clutch is combined and the steering clutch is disengaged; whe...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a combine harvester with a zero-radius steering walking gearbox, which can effectively solve the problem of the existing combine harvester or two-side crawler belt turning at one fast and one slow speed, and increase the idle stroke and energy consumption of the combine harvester; or The crawler belts on both sides stop and turn in small turns, which will damage the soil

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