CN202560953U

CN202560953U - Front and rear drive transfer case of tractor

Info

Publication number: CN202560953U
Application number: CN2012201545914U
Authority: CN
Inventors: 张柱芬
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-10
Filing date: 2012-04-10
Publication date: 2012-11-28
Anticipated expiration: 2022-04-10

Abstract

A front and rear drive transfer case of a tractor comprises a power input shaft 1, a change gear 4 which is provided with a shifting fork groove, a shifting fork 6, a rear drive output shaft 9, a rear drive output gear 5, a front drive transition gear 3, a gap bridge shaft 11, a gap bridge gear 10, a front drive output shaft 13 whose left end is a cone gear, a front drive output gear 12 and a case body 7. Through operating the shifting fork 6, the change gear 4 is stirred so as to select a driving force. When the change gear 4 is engaged with the front drive output gear 12, the tractor is in a front drive state. When the change gear 4 is engaged with the rear drive output gear 5, the tractor is in a rear drive state. When the change gear 4 is engaged with the front drive output gear 12 and the rear drive output gear 5 simultaneously, the tractor is in a front and rear drive state. By using the transfer case of the utility model, according to different road condition working requirements, the suitable working driving force can be selected; and overall performance and applicability of the tractor are increased. The transfer case has the following advantages that: the structure is simple and compact; a noise is low; transmission efficiency is high and cost is low.

Description

A kind of front and back of tractor drive transfer case

One, technical field

The front and back that the utility model relates to a kind of driving mechanism of tractor, particularly a kind of tractor drive the transfer case assembly.

Two, background technique

Present domestic front and back drive the tractor system architecture; All be to constitute mostly by motor, gearbox, transfer case and ransaxle; Motor is input to gearbox with power, outputs to the forerunner and front and back are driven through transfer case, can only realize that single front wheel driving or front and back drive simultaneously; As outputing to rear-guard through transfer case and front and back are driven, can only realize that also single rear driving or front and back drive simultaneously.Can not accomplish that forerunner, rear-guard and front and back drive the requirement that can both drive, can't satisfy various road conditions and select different driving force requirements.

Three, model utility content

The purpose of the utility model is in order to overcome the existing technology deficiency, provides the front and back of a kind of compact structure, advantages of simple, a kind of tractor that cost is low to drive transfer case.

The front and back of a kind of tractor of the utility model drive transfer case, and it is characterized in that: it comprises power input shaft, is provided with the speed change gear of fork slot; Shift fork, rear-guard output shaft, rear-guard output gear; Forerunner's transition gear, the axle of passing a bridge, carrier gear; Left end is forerunner's output shaft of cone gear, forerunner's output gear and casing; Speed change gear is enclosed within on the power input shaft; Power input shaft passes through Bearing Installation on casing; The fork slot of speed change gear is provided with shift fork, and the rear-guard output gear is enclosed within on the rear-guard output shaft, and the left end of rear-guard output shaft is installed in forerunner's transition gear through needle bearing; The left end of forerunner's transition gear and rear-guard output shaft cooperate with power input shaft through bearing and are installed on the casing, and speed change gear can be meshing with each other with forerunner's transition gear and rear-guard output gear; Carrier gear is enclosed within on the axle of passing a bridge, and the axle of passing a bridge cooperates with forerunner's transition gear and rear-guard output shaft through bearing and is installed on the casing, and forerunner's transition gear can be meshing with each other with carrier gear; Forerunner's output gear is enclosed within on forerunner's output shaft, and forerunner's output shaft cooperates with the axle of passing a bridge and is installed on the casing, and forerunner's output gear can be meshing with each other with carrier gear.

The utility model simple and compact for structure, noise is little, transmission efficiency is high, the cost cost is low; Can accomplish that front wheel driving, rear driving and front and back drive several kinds of driving forces and select requirement; Can be according to different road conditions job requirements; The operation driving force that selection is more suitable for has improved the overall performance and the applicability of tractor, is applicable to that various tractors use.

Four, description of drawings

Accompanying drawing is the structural representation that the front and back of a kind of tractor of the utility model drive transfer case.

1 is power input shaft among the figure, the 2nd, and bearing, the 3rd, forerunner's transition gear, the 4th, speed change gear, the 5th, rear-guard output gear; The 6th, shift fork, the 7th, casing, the 8th, needle bearing, the 9th, rear-guard output shaft; The 10th, carrier gear, the 11st, the axle of passing a bridge, the 12nd, forerunner's output gear, the 13rd, forerunner's output shaft.

Five, embodiment

Below in conjunction with accompanying drawing the utility model is described further.

With reference to accompanying drawing, the front and back of a kind of tractor of the utility model drive transfer case, comprise power input shaft 1; Be provided with the speed change gear 4 of fork slot, shift fork 6, rear-guard output shaft 9; Rear-guard output gear 5, forerunner's transition gear 3, the axle 11 of passing a bridge; Carrier gear 10, left end are forerunner's output shaft 13 of cone gear, forerunner's output gear 12 and casing 7; Speed change gear 4 is enclosed within on the power input shaft 1; Power input shaft 1 is installed on the casing 7 through bearing 2; The fork slot of speed change gear 4 is provided with shift fork 6; Rear-guard output gear 5 is enclosed within on the rear-guard output shaft 9; The left end of rear-guard output shaft 9 is installed in forerunner's transition gear 3 through needle bearing 8, and the left end of forerunner's transition gear 3 and rear-guard output shaft 9 cooperate with power input shaft 1 through bearing 2 and be installed on the casing 7, and speed change gear 4 can be meshing with each other with forerunner's transition gear 3 and rear-guard output gear 5; Carrier gear 10 is enclosed within on the axle 11 of passing a bridge, and the axle 11 of passing a bridge cooperates with forerunner's transition gear 3 and rear-guard output shaft 9 through bearing 2 and is installed on the casing 7, and forerunner's transition gear 3 can be meshing with each other with carrier gear 10; Forerunner's output gear 12 is enclosed within on forerunner's output shaft 13, and forerunner's output shaft 13 cooperates with the axle 11 of passing a bridge and is installed on the casing 7, and forerunner's output gear 12 can be meshing with each other with carrier gear 10.

In motion, make shift fork 6 stir speed change gear 4 through operation and select driving force, when speed change gear 4 and forerunner's output gear 3 are meshing with each other; Tractor is front wheel driving; When speed change gear 4 meshed with rear-guard output gear 5, tractor was rear driving, when speed change gear 4 meshes with rear-guard output gear 5 with forerunner's output gear 3 simultaneously; Tractor is that front and back drive simultaneously; According to different job requirements, load and the walking requirement of various road surface, the operation driving force that the tractor selection is more suitable for, the overall performance and the applicability of raising tractor.

Claims

1. the front and back of a tractor drive transfer case, and it is characterized in that: it comprises power input shaft (1), is provided with the speed change gear (4) of fork slot; Shift fork (6), rear-guard output shaft (9), rear-guard output gear (5); Forerunner's transition gear (3), the axle (11) of passing a bridge, carrier gear (10); Left end is forerunner's output shaft (13) of cone gear, forerunner's output gear (12) and casing (7); Speed change gear (4) is enclosed within on the power input shaft (1); Power input shaft (1) is installed on the casing (7) through bearing (2); The fork slot of speed change gear (4) is provided with shift fork (6); Rear-guard output gear (5) is enclosed within on the rear-guard output shaft (9); The left end of rear-guard output shaft (9) is installed in forerunner's transition gear (3) through needle bearing (8), and the left end of forerunner's transition gear (3) and rear-guard output shaft (9) cooperate with power input shaft (1) through bearing (2) and be installed on the casing (7), and speed change gear (4) can be meshing with each other with forerunner's transition gear (3) and rear-guard output gear (5); Carrier gear (10) is enclosed within on the axle (11) of passing a bridge, and the axle (11) of passing a bridge cooperates with forerunner's transition gear (3) and rear-guard output shaft (9) through bearing (2) and is installed on the casing (7), and forerunner's transition gear (3) can be meshing with each other with carrier gear (10); Forerunner's output gear (12) is enclosed within on forerunner's output shaft (13), and forerunner's output shaft (13) cooperates with the axle (11) of passing a bridge and is installed on the casing (7), and forerunner's output gear (12) can be meshing with each other with carrier gear (10).