Wet type four-wheel drive transfer case structure and tractor

Abstract

The invention relates to a wet four-wheel drive transfer case structure and a tractor. The transfer case structure includes a housing, an input gear, an output gear, an output shaft, a tooth nest and a return spring. Both the input gear and the output gear are installed in the housing and Transmission meshing, the output shaft is rotatably connected to the housing and passed through the center of the output gear and is coaxially arranged with the output gear and has a clearance fit; the tooth nest is sleeved on the output shaft and is splined with it, and one end of the tooth nest is connected to the spline. One end face of the output gear meshes; the return spring is arranged along the axial direction of the output shaft, and one end of the return spring abuts against the tooth nest, and the other end abuts against the inner wall of the housing; an oil passage is opened in the output shaft, and the oil passage flows out The mouth is connected with the inner wall of the tooth nest; when the hydraulic oil is input into the oil passage, the hydraulic oil pushes the tooth nest to move axially and disengages from the output gear, and the return spring is compressed; when the hydraulic oil is lost in the oil passage, the tooth nest is reset under the action of the return spring . The present invention controls the engagement and disengagement of the four-wheel drive through hydraulic pressure, and the whole operation process is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of tractors, in particular to a wet four-wheel drive transfer case structure and the tractor. Background technique [0002] At present, four-wheel drive tractors have been widely used, but the existing four-wheel drive transfer case is generally by the rotation of the shift fork shaft, and the position of the passive gear on the four drive power output shafts is moved by the shift fork head, thereby It is more complicated to operate when it is engaged with the transfer case idler to transmit power. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a wet four-wheel drive transfer case structure and a tractor for the deficiencies of the prior art. [0004] The technical scheme of the present invention to solve the above-mentioned technical problems is as follows: a wet four-wheel drive transfer case structure, including a housing, an input gear, an ...

AI Technical Summary

Problems solved by technology

[0002] At present, four-wheel drive tractors have been widely used, but the existing four-wheel drive transfer case is generally by the rotation of the shift fork shaft, and the position of the passive gear on the four drive power output shafts is moved by the shift fork head, thereby Connecting with the transfer case idler to transmit power, the operation is more complicated

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