Stepless speed regulation transmission of harvester

Abstract

The invention discloses a stepless speed regulation transmission of a harvester, which comprises an input shaft of the transmission, wherein the input shaft of the transmission is connected with an engine through a belt wheel at the outer end, a first gear is arranged on the input shaft of the transmission, the first gear is meshed with outer teeth of a gear ring, and inner teeth of the gear ring are meshed with a planetary gear. The stepless speed regulation transmission has the beneficial effects that the transmission is compact in structure and high in practicability, the planetary gear rotates around the center of the planetary gear and revolves around the center of a planetary mechanism through meshing between the planetary gear and the inner gear ring of the gear ring, a planetary carrier is driven by a planetary shaft to rotate, the two parts of mechanical energy are synthesized and then transmitted to the shaft to drive the gear to rotate, and follow-up transmission is connected through the gear. The output rotating speed and direction of a motor of a hydraulic speed regulation mechanism can be adjusted and changed, so that the rotating speed and direction of the planetary carrier also change correspondingly, and the purposes of advancing and backing of the whole vehicle and adjustment of the running speed are achieved.

Description

technical field [0001] The invention relates to a speed changer, in particular to a stepless speed regulation speed changer for a harvester, and belongs to the technical field of speed changers. Background technique [0002] With the development of science and technology, more and more mechanized equipment is used in agricultural production. In the process of harvesting crops, harvesters are mainly used for harvesting. Present harvesters mainly use gasoline engine or diesel engine as the power mechanism, which drives the harvester to walk and cultivate through the gearbox. [0003] The walking gearbox of the harvester in the prior art is all shifted through the shift fork. There has always been a problem in the industry about how to organically combine the hydraulic unit HST with stepless speed regulation function with the stepped gear transmission with high transmission efficiency. At the same time, it has always been an engineering technical problem to form a gearbox for ...

AI Technical Summary

Problems solved by technology

Although stepless speed regulation can be realized through the combination of hydraulic variable pump and hydraulic motor, the conversion efficiency of hydraulic variable pump and hydraulic motor is difficult to reach 80%. The efficiency of the combination of the two is generally less than 60%. The efficiency is low and the hydraulic oil generates heat. , high oil temperature requires heat dissipation is its biggest shortcoming; although the belt can be continuously variable by changing the diameter of the continuously variable transmission wheel belt, there are problems such as belt slippage, bulky size, narrow speed range, and low service life.

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