CN2552756Y

CN2552756Y - Vehicular friction plate self-locking antiskid differential

Info

Publication number: CN2552756Y
Application number: CN 02275824
Authority: CN
Inventors: 洪桓桓; 卢斌; 张宝森; 王运成
Original assignee: Sichuan Jian'an Industrial Ltd
Current assignee: China Southern Industrial automobile Limited by Share Ltd
Priority date: 2002-07-22
Filing date: 2002-07-22
Publication date: 2003-05-28
Anticipated expiration: 2012-07-22

Abstract

The utility model relates to a self locked anti-slip differential in a friction disk for vehicle, comprising a differential casing with a circular groove intracavity, a planetary gear, a gear transmission device and a press device of a decompressed friction disk. The utility model is provided with a differential casing [1] comprising two relative and separating unifications and an axle gear [6] is arranged symmetrically. An anti-thrust washer [2], a preloaded spring, master-slave friction disks with alternative installation, a pressure ring [8] with symmetric installation inner sphere of which is combined with back of a planetary gear [9] and then combined with a gear shaft [7] are arranged on the external cylindrical surface of the utility model. The passing ability is improved notably when the automobile runs on pavement with bad adhering condition and double adhesion coefficient, and the anti-slip torque is increased along with the input torque increasing. Same installation form and size of the isotyped common differential are adopted, so versatility and interchangeability of the utility model is good. Anti-slip operation can be carried out automatically by the utility model according to pavement condition and the driver needs not control when working. The utility model has the advantages of compact and simple internal structure, good making craft and moderate cost.

Description

Automobile-used friction lining self-locking type anti-skid final drive

Technical field

The utility model relates to a kind of automobile-used diff, particularly can realize the anti-skid final drive that left and right sides semiaxis torque difference is distributed.

Background technology

At present, widely used in the automobile is symmetrical bevel differential.This diff adopts sun and planet gear, can realize the differential of left and right sides semiaxis.The diff of this structure, can only mean allocation torque between the semiaxis of the left and right sides, thereby can't realize poor power between the semiaxis of the left and right sides making automobile on the bad road surface of the condition of adhering to, particularly the crossing ability on two adhesion valuies road surface is very poor, has a strong impact on the car opertion performance.

Another kind of use more widely that the anti-slip differential device is a differential locking-device, when automobile one side drive wheel is trackslipped, can utilize differential locking-device to make the diff locking, do not play differential action and realize anti-skidding.It needs to stop just can carry out usually, and bad manipulation is also inconvenient.

Also having a kind of more widely used anti-slip differential device in addition is friction disk type conical gear anti-skid final drive, this diff is when transmitting torque, differential gear box compresses the two ends of two compensating-gear shafts respectively by the inclined-plane, the latter is moved together with planetary wheel is little to the left and right respectively, and press to thrust disc and principal and subordinate's movable friction plate by the cylinder shoulder at planetary wheel back, principal and subordinate's movable friction plate is compressed, when rotating with different rotating speeds, left and right sides semiaxis can produce friction moment, and be delivered on the semiaxis of the left and right sides by axle side gear, realize anti-skidding.Its shortcoming is that fabrication properties is bad, and interchangeablity is poor, and manufacture difficulty is big, and preloading spring is not set, and antiskid capability has very big limitation.

In addition, anti-skid final drives such as dental formula differential that adopts on military-designed vehicle and the overland vehicle and worm-gear differential.Though realizing antiskid function in varying degrees, complicated version and higher manufacturing cost factor, field of application has been subjected to certain limitation.

Summary of the invention

The utility model is the further improvement to existing open differential.

For overcoming the deficiency of existing open differential, the utility model provides a kind of semiaxis torque transferred that realizes, and the size that shifts torque is directly proportional with input torque, can significantly improve automobile on the bad road surface of the condition of adhering to, particularly the friction lining self-locking type anti-skid final drive of crossing ability on two adhesion valuies road surface and driving safety good stability.

The technical scheme that its technical matters that solves the utility model adopts is: comprise the diff shell that has the circular groove inner chamber, planetary wheel and gear drive, and pine is pressed the mechanism of suppressing of friction lining, its special character is: at two a minute unification constituted back sedan-chair axle side gear 6 is housed in the diff shell 1 formed housing inner cylinder cavity symmetrically, symmetry is equipped with thrust washer 2 on the axial outer cylinder of back sedan-chair axle side gear 6, preloading spring and the master who alternately installs, from movable friction plate, and the pressure ring 8 that Internal Spherical Surface matches with planetary wheel 9 backs and the symmetry that matches with gear wheel shaft [7] is installed.When the back axle left and right sides semiaxis in being contained in back sedan-chair axle side gear 6 axis holes did not have speed discrepancy, torque mean allocation on the semiaxis of the back axle left and right sides of diff shell 1 was passed in planetary wheel 9 not rotations by driving system by driving engine.Torque this moment is to pass to back axle left and right sides semiaxis through compensating-gear shaft 7, planetary wheel 9, rear axle shaft gear 6; When there is speed discrepancy in back axle left and right sides semiaxis, planetary wheel 9 rotations, the torque of passing to diff shell 1 passes to back axle left and right sides semiaxis by two lines.One tunnel process compensating-gear shaft 7, planetary wheel 9, rear axle shaft gear 6 pass to rear axle shaft; Another road is then passed through active friction plate 4, is passed to rear axle shaft from movable friction plate 5, rear axle shaft gear 6.Because the active friction plate 4 that matches with diff shell 1 and what match with rear axle shaft gear 6 must be that rotating speed is different from movable friction plate 5, and compensating-gear shaft 7 matches with the v profile of pressure ring 8, therefore there is in relative rotation active friction plate 4 and compressed by pressure ring 8 and disk spring 3 from movable friction plate 5, produce friction moment, pass on the semiaxis of the back axle left and right sides by rear axle shaft gear 6.This friction moment direction is opposite with the fast rear axle shaft hand of rotation that changes, and is identical with the rear axle shaft hand of rotation of slow-speed.The torque that is in the slow-speed wheel will realize safe, reliable and stable self-locking skidproof greater than the fast wheel torque that changes.

The utility model symmetry is assemblied on the outer cylinder of the pressure ring 8 in diff shell [1] half slot can be provided with flange, and its end also offers the v type groove of being determined by concrete vehicle and usage condition with contacted its angle of release of compensating-gear shaft [7].

Active friction plate 4 of the present utility model can be shaped on the outer lug 10 that matches with diff shell 1 inner chamber, also is shaped on the aplysia punctata oil line that oily line distributes different on its two anchor rings.

Of the present utility modelly be shaped on the internal lobes 11 that matches with rear axle shaft gear 6 axial first arc grooves of outer cylinder, also be shaped on the ring-type oil line that oily line distributes different on its two anchor rings from movable friction plate 5.

The utility model compared with prior art has following beneficial effect:

The pressure ring 8 of being set up is with the active friction plate of alternately installing 4, from movable friction plate 5 and disk spring 3, when there is speed discrepancy in back axle left and right sides semiaxis, rear axle shaft torque meeting is shifted, realize the self-locking skidproof of diff stability and safety, improved the crossing ability of automobile on the bad road surface of the condition of adhering to and two adhesion value road surface significantly.And anti-skidding torque increases with the increase of input torque.Next is installation form and the installation dimension that has adopted the homotype open differential identical, can realize the choosing dress, thereby have good commonality and interchangeability.Do not need the manipulation of chaufeur during work, can carry out non-slip operation automatically according to condition of road surface voluntarily.Integral structure is very compact succinct, and anufacturability is good, and cost is moderate.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the elevation profile constructional drawing of first embodiment of the utility model.

Fig. 2 is the cross section view of the utility model pressure ring [8].

Fig. 3 is the cross section view of the utility model compensating-gear shaft [7].

Fig. 4 is the axial section of Fig. 3.

Fig. 5 is the section-drawing of the utility model axle side gear [6].

Fig. 6 is the lateral plan of Fig. 5.

Fig. 7 is the constructional drawing of the utility model active friction plate [4].

Fig. 8 is that the utility model is from movable friction plate [5] outside drawing.

Fig. 9 is the vertical section structure figure of second embodiment of the utility model.

In the accompanying drawing: 1. differential gear box, 2. thrust washer, 3. disk spring, 4. active friction plate, 5. from movable friction plate, 6. rear axle shaft gear, 7. compensating-gear shaft, 8. pressure ring, 9. planetary wheel.

The specific embodiment

Fig. 1 shows first embodiment of the present utility model.This diff by to minute the unification diff shell 1, planetary wheel 9, compensating-gear shaft 7, rear axle shaft gear 6, pressure ring 8, an active friction plate 4, form from movable friction plate 5, disk spring 3 and thrust washer 2.Wherein have the circular groove inner chamber on diff shell 1 inner cylinder.During installation, minute diff shell 1 of unification is assembled compensating-gear shaft 7, planetary wheel 9 symmetrically with pressure ring 8, rear axle shaft gear 6, thrust washer 2, disk spring 3 and active friction plate 4, from movable friction plate 5 by two.Described to give tight spring be disk spring 3, and be provided with outer lug, and the cone angle of disk spring generally is not more than 9 degree.The outer cylinder of the pressure ring 8 shown in Fig. 2 is provided with the flange that matches with diff shell 1 circular groove inner chamber.Its Internal Spherical Surface should match with planetary wheel 9 backs, and the end offers angular dimension according to vehicle and usage condition and definite v type groove.Fig. 3 compensating-gear shaft 7 illustrated in fig. 4 position of should matching with the v type groove of pressure ring 8 is the v type conical surface, and conical surface angle is identical with pressure ring v type groove angle of release angle.Have the half slot of assembling on Fig. 5 rear axle shaft gear 6 axial outer cylinders illustrated in fig. 6 from movable friction plate 5.Active friction plate 4 among Fig. 7 is provided with outer lug 10, two anchor rings that match with diff shell 1 circular groove inner chamber and offers the aplysia punctata oil line that distributes different.Being provided with internal lobes 11, two anchor rings that match with rear axle shaft gear 6 axial outer cylinder upper half-round slots from movable friction plate 5 and offering the ring-type oil line that distributes different among Fig. 8.

In first embodiment shown in Fig. 1, active friction plate 4 and alternately install from movable friction plate 5 also as a friction face, and adopts two disk springs with pressure ring 8 back sides.

In second embodiment shown in Fig. 9, active friction plate 4 and alternately install from movable friction plate 5, but the back side of pressure ring 8 is not re-used as friction face, only adopts a slice disk spring.

Claims

1. automobile-used anti-skid final drive, particularly automobile-used friction lining self-locking skidproof differential mechanism, comprise the diff shell that has the circular groove inner chamber, planetary wheel and gear drive, and pine is pressed the mechanism of suppressing of friction lining, it is characterized in that: at two a minute unification constituted back sedan-chair axle side gear [6] is housed in the formed housing inner cylinder of diff shell [1] cavity symmetrically, symmetry is equipped with thrust washer [2] on the axial outer cylinder of back sedan-chair axle side gear [6], preloading spring and the master who alternately installs, from movable friction plate, and the pressure ring [8] that Internal Spherical Surface matches with planetary wheel [9] back and the symmetry that matches with gear wheel shaft [7] is installed.

2. by the described anti-skid final drive of claim 1, it is characterized in that the outer cylinder that described symmetry is assemblied in the pressure ring [8] in diff shell [1] cavity is provided with flange, its end also offers the v type groove of being determined by concrete vehicle and usage condition with the contacted angle of release of compensating-gear shaft [7].

3. by claim 1 or 2 described anti-skid final drives, it is characterized in that described active friction plate [4] is shaped on the outer lug that matches with diff shell [1] cavity, also be shaped on the aplysia punctata oil line that oily line distributes different on its two anchor rings.

4. by claim 1 or 2 described anti-skid final drives, it is characterized in that describedly being shaped on and rear axle shaft gear [6] internal lobes that axially arc groove matches on the outer cylinder, also be shaped on the ring-type oil line that oily line distributes different on its two ring-like from movable friction plate [5].

5. by claim 1 or 2 described anti-skid final drives, it is characterized in that described preloading spring is that cone angle is not more than 9 degree and is provided with the disk spring [3] of outer lug.

6. by the described anti-skid final drive of claim 1 to 5, its feature is two on chip at the described disk spring [3] that is assemblied in diff shell [1] inner chamber both sides in symmetry, simultaneously with pressure ring [8] back side as a friction face.

7. by the described anti-skid final drive of claim 1 to 5, it is characterized in that disk spring [3] that described symmetry is assemblied in the interior both sides of diff shell [1] is one on chip, pressure ring [8] back side is not as a friction face.

8. by claim 1 or 2 described anti-skid final drives, it is identical with pressure ring [8] v type groove angle of release angle to it is characterized in that described gear wheel shaft [7] and pressure ring [8] v type groove contact site are the conical surface angle of the v type conical surface.