CN1991212A - Composite differential device for four-drive transmission system - Google Patents

Composite differential device for four-drive transmission system Download PDF

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Publication number
CN1991212A
CN1991212A CN 200510097333 CN200510097333A CN1991212A CN 1991212 A CN1991212 A CN 1991212A CN 200510097333 CN200510097333 CN 200510097333 CN 200510097333 A CN200510097333 A CN 200510097333A CN 1991212 A CN1991212 A CN 1991212A
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CN
China
Prior art keywords
differential
differential mechanism
viscous coupling
composite
rear axle
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 200510097333
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Chinese (zh)
Inventor
张庆义
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN 200510097333 priority Critical patent/CN1991212A/en
Publication of CN1991212A publication Critical patent/CN1991212A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a differential mechanism in transmission system of four wheel driving vehicle, comprising compound differential mechanism and rear axle differential mechanism. The compound differential mechanism comprises inter-axle differential mechanism and front-bridge differential mechanism. The rear axle differential mechanism adopts no-slip differential mechanism. In the technological scheme of invention the whole compound differential mechanism takes a place of separated inter-axle differential mechanism and front-bridge differential mechanism. The technological scheme provided in the invention is set in vehicle gearbox so as to make the chassis structure of four wheel driving vehicle compact. Viscous coupling is set in independent box and the viscous coupling is mated with compound differential mechanism to use. Before dynamic distribution the power of driving bridge can improve the cross-country performance of four wheel driving vehicle.

Description

A kind of composite differential device that is used for four-drive transmission system
Technical field
The present invention relates to four-drive transmission system manufacturing technology field, relate to a kind of composite differential device that is used for four-drive transmission system in particular.
Technical background
At present the open differential that adopted of four-wheel driven car is mainly by cross axle, differential gear, bevel planet gear, compositions such as differential carrier.This differential mechanism is " differential is not poor to be turned round " only, and the characteristic of " differential is not poor to be turned round " is brought adverse effect to vehicle driving, when being absorbed in mire as single wheel, because adhesion is not enough, will produces and skid.At this moment the driving force of opposite side wheel not only can not increase, and reduces on the contrary, causes the tractive force of complete machine greatly to reduce.
In order to improve the performance of passing through of four-wheel driven car, between propons, back axle and front and back bridge, differential mechanism is installed all, and preceding rear axle differential is a limited slip differential, effectively solved " differential is not poor to be turned round " phenomenon, but this structural dynamic transmission structure complexity, it is big to take up room, and influences the arrangement space of chassis system; And when the propons differential mechanism adopted limited slip differential, if vehicle side front-wheel loses adhesion, this kind limited slip differential will be locked with differential mechanism, and in a single day differential mechanism temporarily locked, and vehicle has just lost and turned to function, will lead to a disaster when serious.
Summary of the invention
The objective of the invention is to overcome above-mentioned technical deficiency, a kind of compact structure is provided, safe and reliable composite differential device
Technical conceive of the present invention is: a kind of composite differential device that is used for four-drive transmission system, comprise composite differential,, rear axle differential, composite differential comprises mean differential and front axle differential, rear axle differential adopts limited slip differential.
Described composite differential is made up of differential carrier, differential cover, planetary pinion, left side gear, right side gear, differential gear, pad and retainer.
Above-mentioned composite differential is placed in the gearbox, can play the left and right differential of taking turns and play the front and back wheels differential action again.
Be provided with viscous coupling in the above-mentioned transfer case, described viscous coupling one end is connected with gearbox, and the other end is connected with back driving axle, and this differential mechanism and viscous coupling mating reaction can be played the function of dynamic assignment moment of torsion.
The technical solution adopted in the present invention has replaced the mean differential and the front axle differential that separate with the integrated type composite differential, and technological scheme provided by the invention is arranged in the gearbox, can make four-wheel driven car chassis structure compactness like this.Be provided with viscous coupling in the transfer case, viscous coupling and composite differential are used, and the power of ransaxle before and after the dynamic assignment can improve the cross-country ability of four-wheel driven car.
Description of drawings
Fig. 1 is a composite differential structural configuration schematic representation;
Fig. 2 is back driving axle power plant schematic representation;
Fig. 3 is the viscous coupling structural representation.
Among the figure: 1, gearbox, 2, motor, 3, composite differential, 4, viscous coupling, 5, accurate double sided gear, 6, transfer case, 7, rear axle housing, 8, the back axle hypoid gear, 9, rear axle differential, 20, viscous coupling housing, 21, viscous coupling lid, 22, the external splines sheet, 23, internal spline sheet, 24, wire spring, 25, interior hub, 26, oil sealing.
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment
A kind of composite differential device that is used for four-drive transmission system comprises composite differential 3, rear axle differential 9 among the embodiment, and rear axle differential adopts limited slip differential.Accurate double sided gear 5 lumps together with viscous coupling 4 and is placed in the transfer case 6, and composite differential 3 is located in the gearbox 1.
Motor 2 gearbox 1 that is in transmission connection, gearbox 1 composite differential 3 that is in transmission connection, composite differential 3 viscous coupling 4 that is in transmission connection, hub is connected with the front axle differential shell of composite differential 3 the insides in the viscous coupling 4, viscous coupling 4 shells are connected with hypoid gear, the rear drive sprocket thereby connection rear axle differential 9, rear axle differential 9 are in transmission connection.Viscous coupling 4 cooperates the speed discrepancy between the composite differential 3 adjusting front and back driving wheels.
Viscous coupling 4 is internal spline sheets 23 of alternately arranging by in the seal space that housing 21 and interior hub 25 constitute, external splines sheet 22 and the wire spring 24 that is clipped between the interior external splines sheet are formed, inject in the cavity and have the silicone oil of good physicochemical properties as working medium, on the internal spline sheet 23 internal spline is arranged, link to each other with the external splines on the interior hub 25, external splines sheet 22 has external splines, link to each other with the internal spline on the housing 21, internal spline sheet 23, the gap that the external splines sheet is 22 is guaranteed by the wire spring between the external splines sheet in being clipped in 24, process porose or groove separately on the interior external splines sheet, moment of torsion by composite differential 3 outputs, a part drives viscous coupling housing 21, and a part drives the front axle differential of composite differential the inside.Viscous coupling housing 21 connects the gear ring of accurate double sided gear 5 again, the gear ring of accurate double sided gear 5 drives driven gear shaft, driven gear shaft is connected with the gear shaft of the accurate double sided gear 8 of back axle on being arranged on rear axle housing 7 by a transmission shaft, the gear shaft of the accurate double sided gear 8 of back axle drives gear ring, the gear ring rear axle differential 9 that is in transmission connection.Hub 25 connects front axle differential again in the viscous coupling.Shell covers 21 cappings by the viscous coupling of press fit, and interior hub has rubber seal oil sealing 26 sealings in two " X " cross sections, can relatively rotate between interior hub 25 and the housing 21, thus the dynamic assignment of realization moment of torsion.

Claims (4)

1, the differential mechanism in a kind of four-wheel driven car power train, comprise composite differential,, rear axle differential, it is characterized in that: composite differential comprises mean differential and front axle differential, rear axle differential adopts limited slip differential.
2, differential mechanism according to claim 1 is characterized in that: described composite differential is made up of differential carrier, differential cover, planetary pinion, left side gear, right side gear, differential gear, pad and retainer.
3, differential mechanism according to claim 2 is characterized in that: above-mentioned composite differential is placed in the gearbox, can play the left and right differential of taking turns and play the front and back wheels differential action again.
4, differential mechanism according to claim 3, it is characterized in that: be provided with viscous coupling in the above-mentioned transfer case, described viscous coupling one end is connected with gearbox, and the other end is connected with back driving axle, and this differential mechanism and viscous coupling mating reaction can be played the function of dynamic assignment moment of torsion.
CN 200510097333 2005-12-31 2005-12-31 Composite differential device for four-drive transmission system Pending CN1991212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200510097333 CN1991212A (en) 2005-12-31 2005-12-31 Composite differential device for four-drive transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200510097333 CN1991212A (en) 2005-12-31 2005-12-31 Composite differential device for four-drive transmission system

Publications (1)

Publication Number Publication Date
CN1991212A true CN1991212A (en) 2007-07-04

Family

ID=38213653

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200510097333 Pending CN1991212A (en) 2005-12-31 2005-12-31 Composite differential device for four-drive transmission system

Country Status (1)

Country Link
CN (1) CN1991212A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102374288A (en) * 2010-08-12 2012-03-14 Zf腓德烈斯哈芬股份公司 Operation method of a transmission device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102374288A (en) * 2010-08-12 2012-03-14 Zf腓德烈斯哈芬股份公司 Operation method of a transmission device
CN102374288B (en) * 2010-08-12 2016-03-30 Zf腓德烈斯哈芬股份公司 For running the method for transmission device

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