Combined harvester conveying trough with forward rotation conveying function and reverse rotation grass discharge function

Abstract

The invention provides a combined harvester conveying trough with a forward rotation conveying function and a reverse rotation grass discharge function. The conveying trough comprises a conveying trough shell, a chain harrow, a supporting plate, a transmission mechanism and a tensioning mechanism. By means of a tension wheel mechanism, power between a power output shaft of a combined harvester threshing cylinder and a power input shaft of the conveying trough is cut and connected, the power is transmitted in the mode that a bevel gear in a forward rotation transmission box and a bevel gear in a reverse rotation transmission box are always meshed, reversing operation of power connection shafts in the forward rotation transmission box and in the reverse rotation transmission box is controlled in the mode that a driver pulls a handle on a driving console, a transmission system of the forward rotation and reverse rotation conveying trough of a combined harvester is simplified, the grass blocking problem in the conveying trough can be quickly solved, and obstacle removal difficulty of grass blocking of the conveying trough in the combined harvester during harvesting is reduced. The conveying trough is simple in structure, convenient to operate and capable of greatly improving efficiency and safety when applied to the combined harvester.

Description

technical field [0001] The invention relates to the technical field of a rice and wheat conveying trough device on a combine harvester, in particular to a combine harvester conveying trough with the function of forward rotation, reverse rotation and reverse weed removal, which can be widely used in high-performance harvesting of rice and wheat. Background technique [0002] Most of the conveying troughs of the existing domestic and foreign combine harvesters with the function of forward-rotating grass feeding and reverse-reversing grass-removing are provided with a forward clutch and a reverse clutch on the transmission input shaft, for example, the invention patent of application number 201110037073.4 (combined harvester) A bevel gear transmission box is designed, and the box input shaft is protruded on the left and right sides of the transmission box. The direction of the two box input shafts is opposite. The box input shaft in the reverse direction is linked with the harv...

AI Technical Summary

Problems solved by technology

[0002] Most of the conveying troughs of the existing domestic and foreign combine harvesters with the function of forward-rotating grass feeding and reverse-reversing grass-removing are provided with a forward clutch and a reverse clutch on the transmission input shaft, for example, the invention patent of application number 201110037073.4 (combined harvester) A bevel gear transmission box is designed, and the box input shaft is protruded on the left and right sides of the transmission box. The direction of the two box input shafts is opposite. The box input shaft in the reverse direction is linked with the harvesting input shaft to transmit the driving force in the forward and reverse directions, realizing the function of the combine harvester conveying trough forwardly rotating grass to transport grass and reversely returning grass, but the arrangement of two power transmission routes makes The structure is more complex, the forward and reverse clutches and the input shafts of the forward and reverse boxes work alternately, and the probability of failure increases; Chinese patent CN201420466525. The transmission shaft is equipped with a reverse gear box mechanism, including the transmission gear set on the main drive shaft of the conveying trough, the transition shaft, and the shift fork and sliding gear set on the transition shaft. The reverse gear box mechanism is moved by the shift fork The sliding gear on the transition shaft meshes with the transmission gear on the main drive shaft of the conveying trough, changing the direction of the main drive shaft of the conveying trough, and realizes the function of the combine harvester conveying trough forward and reverse grass delivery, but also uses the conveying Two sets of tensioning devices are installed between the main drive shaft of the trough and the threshing drum shaft. The structure is complex and the probability of failure increases. Tooth skipping phenomenon, power transmission is unstable; the driver needs to get off the car to switch the shift fork, and the efficiency is low

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