CN102126431A

CN102126431A - Front axle automatic meshing device of cross-country four-wheel-drive vehicle

Info

Publication number: CN102126431A
Application number: CN2011100387735A
Authority: CN
Inventors: 聂小勇; 黄斌; 熊和保; 赵开林; 胡婧
Original assignee: Jiangling Holdings Co Ltd
Current assignee: Jiangling Holdings Co Ltd
Priority date: 2011-02-16
Filing date: 2011-02-16
Publication date: 2011-07-20
Anticipated expiration: 2031-02-16
Also published as: CN102126431B

Abstract

The invention discloses a front axle automatic meshing device of a cross-country four-wheel-drive vehicle, comprising a power transmission part composed of a front wheel hub, a knuckle and a front axle half shaft. The front axle automatic meshing device is characterized by also comprising an automatic hub locking device composed of a shell, a base, a gear and a return spring, wherein the right end of the front axle half shaft is connected with the base by virtue of a spline, the outer wall of the gear is provided with a gear cam which can rotate and move in the cam slot of the base on the outer wall of the left end of the base, the outer wall of the middle part of the base is connected with the inner wall of the shell in a 'KAN' (a radical in Chinese characters) shape by virtue of the spline; the left end of the return spring props against between a stop washer and the inside wall of the shell; and the shell is fixed on the front wheel hub by a screw rod. The gear is provided with a gear stop block which can stretch into the groove of the knuckle. The device provided by the invention has the advantages that a purely mechanical automatic control mechanism is adopted, thus the control convenience and reliability of a four-wheel-drive system are improved, the fuel economy of a cross-country vehicle is improved, the whole vehicle is compact in arrangement, the weight is light and the like.

Description

4 off-road wheels drives car propons automatic engagement device

Technical field

The present invention relates to automobile equipment, especially relate to a kind of 4 off-road wheels and drive car propons automatic engagement device.

Background technology

Along with the development of automotive technology, the cross-country traveling ability of SUV car, fuel economy and control comfort are more and more paid attention to by people.At present, the wheel limit geared assembly of four-wheel drive vehicle all is manual control mechanism or electric operation mechanism, but when the SUV car travels on abominable road surface or cross-country operating mode following time, the manual switching mechanical brake ability of automobile-used spanner gear shift under the chaufeur of back makes and handles very inconvenience because manual control mechanism need stop; And electric operation mechanism owing to electric drive power not enough or reason such as electronic operation is not in place and electronic component itself is unreliable, gear shift in time, reliability is relatively poor.

Summary of the invention

The object of the present invention is to provide a kind of automatic controller of pure machinery, the comfort feature that promotes the manipulation of four-wheel drive system and reliability, the fuel economy of raising cross-country car, light weight, car load of adopting to arrange that compact 4 off-road wheels drives car propons automatic engagement device.

The object of the present invention is achieved like this:

A kind of 4 off-road wheels drives car propons automatic engagement device, comprise by front wheel hub, the motivation transfer motion part that steering swivel and propons semiaxis are formed, mounting of tyre is on front wheel hub, the outer wall of steering swivel is installed in the centre of front wheel hub by conical bearing, the axle drive shaft that links to each other with engine power is connected with the propons semiaxis, the left end of propons semiaxis is installed in the middle of the knuckle bores of steering swivel by coro bearng, feature is: also comprise by housing, base, the automatic hub mechanical brake that gear and pull back spring constitute, the right-hand member of propons semiaxis extend in the base aperture of base, link together by spline and base, on the left end outer wall of base, be processed with the base cam path of indent, gear is positioned over the left end of base, the cam that in the base cam path that is processed with on the outer wall of gear on can left end outer wall, rotates at base, the male splines that can make axial motion on base is installed on the outer wall of the middle part of base, inwall at the housing of " Qian " shape has the female splines that cooperates with male splines, and base links together by male splines and housing female splines; Be fixed with the packing ring that ends of annular on the outer wall of the middle part of base, be fixed with the back-up ring of annular on the right-hand member outer wall of base, the left end that is enclosed within the pull back spring on the base right-hand member outer wall withstands on and ends on the packing ring, and the right-hand member of pull back spring withstands on the back-up ring; Screw rod passes the housing side opening and the front wheel hub side opening is fixed on housing on the front wheel hub.

Lateral wall right-hand member at steering swivel is processed with the steering swivel groove, is processed with to extend into the gear stops that plays the role of positioning in the steering swivel groove on gear.

When the SUV car travel on the road surface preferably under the operating mode, during without four wheel drive because base separates with housing, front-wheel (being front wheel hub) and motivation transfer motion part are open circuited, do not have circulating of power, thereby can be fuel-efficient and energy-conservation.When the SUV car travel under abominable road surface or cross-country operating mode, when needing use four wheel drive, need only during pilot control part-time case is hung up the four wheel drive gear, axle drive shaft is given the propons semiaxis with the transmission of power of driving engine, the propons semiaxis makes the base rotation of automatic hub mechanical brake, base is pressed to left back by the base cam path on the base, base is automatic and housing engagement by spline, drives front wheel hub by housing and rotates, thereby drive front-wheel.Owing on the gear cam is installed, gear is connected with steering swivel by the gear stops, and gear does not rotate all the time.During release, part-time case does not have transmission of power to base, and base and housing do not have relative motion or movement tendency, and base is self-return under the effect of pull back spring.

Therefore, the present invention has the automatic controller that adopts pure machinery, promotes the advantage that comfort feature and reliability, the fuel economy of raising cross-country car, the car load that the four-wheel drive system handles arranged compactness, light weight, realized the structure lightweight requirements.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the enlarged drawing of base, gear and pull back spring;

Fig. 3 is an assembly drowing of the present invention.

The specific embodiment

Below in conjunction with embodiment and contrast accompanying drawing the present invention is described in further detail.

A kind of 4 off-road wheels drives car propons automatic engagement device, comprise by front wheel hub 4, the motivation transfer motion part 5 that steering swivel 1 and propons semiaxis 3 are formed, mounting of tyre is on front wheel hub 4, the outer wall of steering swivel 1 is fixedly mounted on the centre of front wheel hub 4 by conical bearing 17, the axle drive shaft that links to each other with engine power is connected with propons semiaxis 3, the left end of propons semiaxis 3 is installed in the middle of the knuckle bores 26 of steering swivel 1 by coro bearng 25, automatic hub mechanical brake 8 is by housing 13, base 14, gear 6 and pull back spring 9 constitute, the right-hand member of propons semiaxis 3 extend in the base aperture 10 of base 14, link together by spline 7 and base 14, on the left end outer wall 20 of base 14, be processed with the base cam path 19 of indent, gear 6 is positioned over the left end of base 14, the cam 24 of rotation in the base cam path 19 that is processed with on the outer wall of gear 6 on can left end outer wall 20 at base 14, the male splines 22 that can make axial motion on base 14 is arranged on the middle part of base 14 outer wall 21, inwall at the housing 13 of " Qian " shape has the female splines 27 that cooperates with male splines 22, and base 14 can link together with housing 13 by male splines 22 and female splines 27; On the middle part of base 14 outer wall 21, be fixed with the only packing ring 11 of annular, on the right-hand member outer wall of base 14, be fixed with the back-up ring 23 of annular, the left end that is enclosed within the pull back spring 9 on the base 14 right-hand member outer walls withstands on and ends on the packing ring 11, and the right-hand member of pull back spring 9 withstands on the back-up ring 23; Screw rod 15 passes housing 13 side openings 12 and front wheel hub side opening 16 is fixed on housing 12 on the front wheel hub 4.

Lateral wall right-hand member at steering swivel 1 is processed with steering swivel groove 2, is processed with to extend into the gear stops 18 that plays the role of positioning in the steering swivel groove 2 on gear 6.

Claims

1. a 4 off-road wheels drives car propons automatic engagement device, comprise by front wheel hub, the motivation transfer motion part that steering swivel and propons semiaxis are formed, tire sleeve is contained on the front wheel hub, the outer wall of steering swivel is fixedly mounted on the centre of front wheel hub by conical bearing, the axle drive shaft that links to each other with engine power is connected with the propons semiaxis, the left end of propons semiaxis is sleeved in the middle of the knuckle bores of steering swivel by coro bearng, it is characterized in that: also comprise by housing, base, the automatic hub mechanical brake that gear and pull back spring constitute, the right-hand member of propons semiaxis extend in the base aperture of base, link together by spline and base, on the left end outer wall of base, be processed with the base cam path of indent, gear is positioned over the left end of base, the cam that in the base cam path that is processed with on the outer wall of gear on can left end outer wall, rotates at base, the male splines that can make axial motion on base is installed on the outer wall of the middle part of base, inwall at the housing of " Qian " shape has the female splines that cooperates with male splines, and base links together by male splines and housing female splines; Be fixed with the packing ring that ends of annular on the outer wall of the middle part of base, be fixed with the back-up ring of annular on the right-hand member outer wall of base, the left end that is enclosed within the pull back spring on the base right-hand member outer wall withstands on and ends on the packing ring, and the right-hand member of pull back spring withstands on the back-up ring; Screw rod passes the housing side opening and the front wheel hub side opening is fixed on housing on the front wheel hub.

2. the 4 off-road wheels according to claim 1 drives car propons automatic engagement device, and it is characterized in that: the lateral wall right-hand member at steering swivel is processed with the steering swivel groove, is processed with on gear and can extend into the gear stops that plays the role of positioning in the steering swivel groove.