Crawler-type chassis for agricultural machine

Abstract

The invention discloses a crawler-type chassis for an agricultural machine. A left annular crawler structure and a right annular crawler structure are respectively connected to two sides of a chassis rack, wherein each of the left annular crawler structure and the right annular crawler structure comprises an annular crawler; a driven wheel set which consists of a front pulley, a rear pulley, bottom pulleys and two top pulleys is arranged in each annular crawler, and the top pulleys are positioned at the top of the inner side of each annular crawler and support each annular crawler upwards; a driving wheel is arranged at the top of the outer side of each annular crawler in a meshing manner, and the driving wheel is positioned between supporting positions of the two top pulleys and compresses the annular crawler from top to bottom, so that a circular arc is formed at the top of each annular crawler, and requirements for the transmission wrap angle of external teeth of the driving wheel are met; two support legs are respectively arranged on two sides of the chassis rack so as to support the two top pulleys of the left annular crawler structure and the two top pulleys of the right annular crawler structure; when the height of the support legs is adjusted, the height of the chassis rack above the ground can be adjusted; a speed change gear box is arranged between the left annular crawler structure and the right annular crawler structure; output shafts of the speed change gear box are respectively connected with the driving wheel of the left annular crawler structure and the driving wheel of the right annular crawler structure. The agricultural machine with the crawler-type chassis can turn by 90 degrees in situ or turn round by 180 degrees in situ.

Description

technical field [0001] The invention relates to a crawler-type mechanical chassis, in particular to a crawler-type paddy field, dry soil cultivator, crawler-type rotary tiller, crawler-type tractor, and crawler-type combine harvester which are suitable for use in rural areas. Background technique [0002] The existing known crawler paddy fields, dry soil tillage machines, crawler rotary tillers, crawler tractors, crawler combine harvesters and other agricultural machinery (hereinafter referred to as agricultural machinery) all use ring-shaped rubber crawlers, and the supporting driving wheels The drive structure is all crawler internal tension type front or rear drive structure. The "track internal tension type front or rear drive structure" mentioned here means that the output shaft of the transmission gearbox and the driving wheel are installed at the front or rear position of the inner ring of the track, and the track is driven by the driving wheel to achieve the purpose ...

AI Technical Summary

Problems solved by technology

[0005] Second, in response to the problems mentioned in one of the above, there is a structure with a middle-drive triangular track configuration, but this structure is also an internal tension structure of the driving wheel, that is, the driving wheel is installed on the upper side of the track in the middle of the chassis frame to drive the track , although the chassis frame can properly raise some heights from the ground, but in addition to the common defects of the known front (or rear) internal drive type, there are also defects: The installation position of other components is limited, the center of gravity of the machine must be raised, the stability is relatively poor, which brings unsafe factors, and it still cannot meet the needs of the height of the machine chassis from the ground for paddy fields with deep mud feet

[0010] Seventh, according to my country's national conditions, grain production in hills and mountainous areas is absolutely indispensable at present, and small-sized wheeled harvesters are also needed for planting one-season rice and wheat. If the crawler walking is replaced by rubber wheels, loading and unloading is very difficult and quite troublesome

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