28-35 horsepower wheeled tractor transmission case

Abstract

The invention relates to a 28-35 horsepower wheel tractor wheel box which comprises a box body, a main drive bevel gear shaft, a central transmission drive bevel gear, a central transmission driven bevel gear, a differential assembly, a left half-axle gear, a right half-axle gear and a half axle gear, a final transmission drive gear, a final transmission driven gear and a power output assembly, wherein, power is inputted into the wheel box body through the main drive bevel gear shaft, and the central transmission drive bevel gear; the central transmission drive bevel gear and the central transmission driven bevel gear are meshed with each other; a planet gear shaft of the differential assembly is arranged on a differential carrier; a planet gear is hollowly sleeved on the planet gear shaft and meshed with the left half-axle gear and the right half-axle gear; the final transmission drive gear is meshed with the final transmission driven gear. The invention is characterized in that: the central transmission driven bevel gear is fixed on a transversely arranged gear shaft which supports the wheel box body through a bearing; the final transmission drive gear is arranged on the gear shaft; the final transmission driven gear is fixedly connected with the differential carrier. The invention has the advantages of simple structure, high drive efficiency, low churning loss and easy formation of mass production.

Description

technical field [0001] The invention relates to a transmission box in which a transmission device is installed, especially a 28-35 horsepower wheeled tractor transmission box. Background technique [0002] The supporting power of the 28-35 horsepower tractor is a two-cylinder or three-cylinder vertical, in-line, water-cooled, four-stroke, direct-injection combustion chamber diesel engine. Through the rigid connection between the engine flywheel housing, the gearbox and the transmission box, the torque of the engine is input to the first shaft of the gearbox through the clutch, and then transmitted to the central drive in the transmission box through the multi-stage gears in the gearbox to change the torque. The rotating plane, after the differential transmission, realizes the torque output through the final drive. Therefore, the main function of the transmission box is to further change the transmission ratio, increase the torque, and reduce the speed of the power transmitt...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages in the prior art that the transmission box uses many parts, complex structure, high manufacturing cost, low transmission efficiency, and large oil churning loss of gears, the present invention provides a transmission box for a 28-35 horsepower wheeled tractor. The transmission box is not only simple in structure, low in cost, high in transmission efficiency, and small in oil churning loss, but also has good processability in parts processing and assembly, and is easy to form mass production

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