CN202629017U

CN202629017U - Farm truck transfer case

Info

Publication number: CN202629017U
Application number: CN 201220299245
Authority: CN
Inventors: 龙林
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-21
Filing date: 2012-06-21
Publication date: 2012-12-26
Anticipated expiration: 2022-06-21

Abstract

The utility model discloses a farm truck transfer case which comprises a case body, a normally moving gear sleeved on a transmission case input shaft, and a rear axle fixing flange, and further comprises a bridge gear, an intermediate axle, an gear-engaging gear, a front axle output shaft fixedly sleeved to the gear-engaging gear, an output gear at an outer end of a front axle output shaft, a front axle fixing flange and bearings mounted on all shafts, wherein the transfer case is provided with two blind holes corresponding to a main transmission case bearing; the two blind holes can be respectively correspondingly sleeved to two projecting parts on a housing of the gearbox case body; and a shift fork device is sleeved to a gear-shifting gear. The farm truck transfer case provided by the utility model has the advantages that as the transfer case is sleeved to the main transmission case, the transfer case moves in relative rest to the transmission case; as the transmission case input shaft directly drives the transfer case to rotate, to form single-shaft output, the length of the front axle output shaft is reduced, and the resonance side effect generated due to a too long shaft is reduced; and through the shift fork device, shift between rear axle driving and front and rear axle driving is achieved, and stable travel of the farm truck on various ground surfaces is ensured.

Description

A kind of agricultural vehicle transfer case

Technical field

The utility model relates to the agricultural vehicle drive mechanism, is meant the agricultural vehicle transfer case especially.

Background technique

Rear Double drove twin shaft transfer case structure before general agricultural vehicle transfer case structure mainly contained at present; The shifting fork device of its gearshift internal gear by fit on casing, input shaft, the input shaft, power shift gear fit, the jack shaft that gear is meshed with front and back gear on the input shaft before and after it, the preceding output gear that is meshed with the jack shaft backgear, the back output gear that is meshed with preceding output gear, and the bearing fixedly installed on the front and back output shaft, each root axle of fit of output gear stretch out the rear and front end output flange composition that the output shaft on casing both sides is fixed.

It is that motor provides power to pass through the rotation of gearbox drive transfer case input shaft that preceding Rear Double drives the agricultural vehicle kind of drive; The transfer case output shaft is a twin shaft; The flange plate of rear axle propeller shaft end rotated before the flange plate of double output shaft front end and back end drove and is fixed on; Rotate thereby drive forward and backward transmission shaft, the other end of forward and backward transmission shaft is connected with the input shaft of forward and backward deceleration assembly again, thereby makes forward and backward bridge realize two the driving.Because transfer case is installed on the agricultural vehicle crossbeam; Make transfer case in the time of motor racing and gearbox be in the relative movement state, input shaft and double output shaft produce loss in transmitting dynamic process; Input and output shaft itself is prone to cause damage, thereby shortens the working life of transfer case.

Summary of the invention

The purpose of the utility model is to overcome above-mentioned defective, and a kind of agricultural vehicle transfer case is provided.

The scheme of the utility model is: a kind of agricultural vehicle transfer case; Comprise casing, be enclosed within normal moving gear and back axle fastening flange on the gearbox input shaft, also comprise carrier gear, jack shaft, engage a gear gear, the bearing fixedly installed on propons output shaft, propons output shaft outer end output gear, propons fastening flange and each the root axle of fit with the engage a gear gear; Two blind holes corresponding with the main-gear box bearing are arranged on the transfer case; Two projections corresponding fit respectively on two blind holes and the gearbox casing shell, the design of blind hole makes transfer case follow gearbox to fuse; Power shift gear is sheathed with shifting fork device, and shifting fork device is by declutch shift shaft, the shift fork head; Shift fork moves button and forms; Shift fork head and declutch shift shaft interlock, declutch shift shaft and shift fork move the button interlock, and shift fork moves button and the interlock of engage a gear gear; The engage a gear gear is with the carrier gear interlock or separate the conversion of realization rear bridge driven and preceding rear bridge driven.

Said transfer gear can be changed corresponding normal moving gear based on gearbox-type.

Said leading portion output shaft outer end is provided with the code table device, is used to write down mileage.

The advantage of the utility model is: transfer case makes transfer case follow gearbox to fuse through the design of blind hole; And make the static relatively motion of transfer case and gearbox; Make the transmission of torsion straight line, transmission efficiency, energy utilization rate improve and have protected the member of agricultural vehicle own not caused damage by torsion; With respect to other transfer cases; The gearbox input shaft directly drives transfer case and rotates, and has reduced transfer case input shaft and transfer case tail end output shaft, forms single shaft output; Shortened the length of propons output shaft; Can reduce because the resonance side effect of the long generation of axle has realized the conversion of rear bridge driven and preceding rear bridge driven having guaranteed that agricultural vehicle goes at the stable of each road surface through shifting fork device.

Description of drawings

Fig. 1 is the utility model internal structure schematic representation;

Fig. 2 is the utility model front schematic view;

Fig. 3 is the utility model schematic rear view.

Embodiment

Like Fig. 1～shown in Figure 3; A kind of agricultural vehicle transfer case; Comprise casing 1, be enclosed within normal moving gear 2 and back axle fastening flange 3 on the gearbox input shaft, also comprise carrier gear 4, jack shaft 5, engage a gear gear 6, the bearing fixedly installed on propons output shaft 8, propons output shaft outer end output gear 9, propons fastening flange 10 and each the root axle of fit with the engage a gear gear; Set up blind hole corresponding 11 and blind hole 12 on the transfer case with the main-gear box bearing; Two projections corresponding fit respectively on two blind holes and the gearbox casing shell, the design of blind hole makes transfer case follow gearbox to fuse;

Power shift gear is sheathed with shifting fork device 7; Shifting fork device is by declutch shift shaft 71, and shift fork head 72, shift fork move button 73 and form; Shift fork head 72 and declutch shift shaft 71 interlocks; Declutch shift shaft 71 moves button 73 interlocks with shift fork, and shift fork moves

button

73 and 6 interlocks of engage a gear gear, and engage a gear gear 6 is with carrier gear 4 interlocks or separate the conversion of accomplishing rear bridge driven and preceding rear bridge driven.Propons output shaft outer end is provided with code table device 13.

Transfer case makes and the static relatively motion of gearbox through being linked on the main-gear box, makes the transmission of torsion straight line, and transmission efficiency, energy utilization rate improve and protected the member of agricultural vehicle own not caused damage by torsion; With respect to other transfer cases; The gearbox input shaft directly drives transfer case and rotates, and has reduced transfer case input shaft and transfer case tail end output shaft, forms single shaft output; Shortened the length of propons output shaft; Can reduce because the resonance side effect of the long generation of axle has realized the conversion of rear bridge driven and preceding rear bridge driven having guaranteed that agricultural vehicle goes at the stable of each road surface through shifting fork device.

Claims

1. agricultural vehicle transfer case; Comprise casing, be enclosed within normal moving gear and back axle fastening flange on the gearbox input shaft, also comprise carrier gear, jack shaft, engage a gear gear, the bearing fixedly installed on propons output shaft, propons output shaft outer end output gear, propons fastening flange and each the root axle of fit with the engage a gear gear; It is characterized in that; Transfer case is provided with two blind holes corresponding with the main-gear box bearing; Two projections corresponding fit respectively makes transfer case follow gearbox to fuse on two blind holes and the gearbox casing shell.

2. a kind of agricultural vehicle transfer case according to claim 1 is characterized in that power shift gear is sheathed with shifting fork device; It is by declutch shift shaft, and shift fork head, shift fork move button and form; Shift fork head and declutch shift shaft interlock; Declutch shift shaft and shift fork move button interlock, and shift fork moves button and the interlock of engage a gear gear, and the engage a gear gear is with the carrier gear interlock or separate.

3. a kind of agricultural vehicle transfer case according to claim 1 is characterized in that, said transfer case can be changed corresponding normal moving gear according to gearbox-type.

4. a kind of agricultural vehicle transfer case according to claim 1 is characterized in that, said leading portion output shaft outer end is provided with the code table device, is used to write down mileage.