Electronic control pneumatic gear shifting device of tractor transmission

Abstract

An electronic control pneumatic gear shifting device of a tractor transmission comprises a whole vehicle air source, a gear shifting execution mechanism, a clutch operation mechanism and a controller. The whole vehicle air source comprises an air compressor, an air storage tank and an air filtration regulator. The gear shifting execution mechanism comprises a first three-position five-way pneumatic electromagnetic valve, a first two-position three-way pneumatic electromagnetic valve, a second three-position five-way pneumatic electromagnetic valve, a second two-position three-way pneumatic electromagnetic valve, a first gear shifting cylinder and a second gear shifting cylinder. The clutch operation mechanism comprises a third two-position three-way pneumatic electromagnetic valve, an assistance cylinder, a control valve and a pedal mechanical transmission device. The air compressor is connected with the pneumatic electromagnetic valves through an air conveying pipeline by means of the air storage tank and the air filtration regulator. All the pneumatic electromagnetic valves are connected with the controller. An air inlet of a control valve is connected with the whole vehicle air source through the air conveying pipeline. Electronic control pneumatic gear shifting and pneumatic assistance are adopted for the electronic control pneumatic gear shifting device, and therefore the operation comfort and the work efficiency of the transmission are improved, the fatigue strength is lowered, and the automation degree of a tractor is improved.

Description

technical field [0001] The invention relates to a shifting device, in particular to an electronically controlled pneumatic shifting device for a tractor transmission. Background technique [0002] my country is a large agricultural country, and it has the largest number of tractors in the world. In recent years, the country has continuously increased its investment in agricultural machinery, making tractors play an increasingly important role in agricultural production and the national economy. However, most domestic tractors use manual shifting, and most of the clutch separation is controlled by pedal mechanical transmission. The separation is relatively difficult, and there will be problems such as difficulty in shifting when shifting gears, and the transmission efficiency is low, and the operation stability and control are low. The performance is not good, and different driving levels will have a great impact on the tractor’s fuel economy and shifting smoothness. At the ...

AI Technical Summary

Problems solved by technology

However, most domestic tractors use manual shifting, and most of the clutch separation is controlled by pedal mechanical transmission. The separation is relatively difficult, and there will be problems such as difficulty in shifting when shifting gears, and the transmission efficiency is low, and the operation stability and control are low. The performance is not good, and different driving levels will have a great impact on the tractor’s fuel economy and shifting smoothness. At the same time, complicated shifting operations are likely to cause driver fatigue, which has become increasingly unable to meet the needs of modern agriculture.

Images