CN203020075U - Differential lock and rear axle assembly of light-duty engineering truck - Google Patents
Differential lock and rear axle assembly of light-duty engineering truck Download PDFInfo
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- CN203020075U CN203020075U CN 201220642251 CN201220642251U CN203020075U CN 203020075 U CN203020075 U CN 203020075U CN 201220642251 CN201220642251 CN 201220642251 CN 201220642251 U CN201220642251 U CN 201220642251U CN 203020075 U CN203020075 U CN 203020075U
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- fixed engagement
- shift fork
- cylinder
- engagement cover
- engaging sleeve
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Abstract
The utility model discloses a differential lock and a rear axle assembly of a light-duty engineering truck. The rear axle assembly comprises a half axle, a main speed reducer, a differential mechanism, a main speed reducer shell body, a differential mechanism shell body and a differential lock. The differential lock comprises a poking fork, a sliding meshing sleeve, a fixed meshing sleeve, a driving device and a return spring, wherein the driving device is used for driving the poking fork to move. The sliding meshing sleeve is arranged on the half axle. The fixed meshing sleeve is connected with the differential mechanism shell body. The poking fork pokes the sliding meshing sleeve to move towards the fixed meshing sleeve under the action of the driving device to enable the sliding meshing sleeve to be meshed with the fixed meshing sleeve so as to limit the half axle to rotate relative to the differential mechanism shell body. The poking fork is driven by the return spring to poke the sliding meshing sleeve to break away from the fixed meshing sleeve and move towards the direction far from the fixed meshing sleeve. The rear axle assembly of the light-duty engineering truck is capable of enabling vehicles to better adapt to various types of complex road conditions.
Description
Technical field
The utility model relates to field of automobile, is specifically related to a kind of differential locking-device and a kind of Lightweight project car back axle assembly.
Background technology
Engineering truck is the trunk strength of a building engineering, is generally used for the work such as delivery, excavation, repairing of engineering.Common engineering truck has: heavy goods vehicle, large-scale crane, excavating machine, bulldozer, roller, load wagon, electric power rush-repair vehicle, breakdown lorry, cross-country engineering truck, electric welding engineering truck, oxidizer sewage treatment project car etc.
Due to the restriction of working environment, make the engineering truck road conditions complicated, often can run into empty recessed, muddy, ice and snow road, cause can not passing through on Special Road, affect production efficiency.in the prior art, Lightweight project car rear-axle differential adopts left and right diff gear symmetrical structure usually, left and right diff transmitting ratio equates, this structures shape under various road conditions, the engine torque that two drive wheels distribute is mean allocation, this allocation scheme is all rational for straight line or the enforcement of turning, but work as muddy, on ice and snow road, single wheel enters adhesion value little road surface, tractive force is reduced greatly, although opposite side has good cohesive resistance with the road surface, but tractive force also must not and then reduce, potential tractive force can not be brought into play and halt.
Summary of the invention
The utility model provides a kind of differential locking-device on the one hand, can not bring into play the problem of driving effect to solve in prior art when single wheel skids opposite side wheel.
The utility model provides a kind of Lightweight project car back axle assembly on the other hand, to solve traditional Lightweight project car back axle above shortcomings, makes the Lightweight project car adapt to better various complex road conditions.
For this reason, the utility model provides following technical scheme:
A kind of differential locking-device comprises: shift fork, slip engaging sleeve, fixed engagement cover and drive actuating device and the return spring that described shift fork moves; Described slip engaging sleeve overlaps on relative end face with described fixed engagement and is respectively equipped with engaging tooth; Described shift fork is stirred described slip engaging sleeve and is moved to the direction of described fixed engagement cover under described actuating device effect, and the engaging tooth on described slip engaging sleeve end face is meshed with the engaging tooth that described fixed engagement is overlapped on end face; Described shift fork is stirred described slip engaging sleeve and is broken away from described fixed engagement cover under the driving of described return spring, and moves to the direction away from described fixed engagement cover.
Preferably, described differential locking-device also comprises: jump ring is used for limiting described fixed engagement cover axially mobile.
Preferably, described actuating device comprises: cylinder and master cock, and described master cock is used for controlling described cylinder charge or venting; When cylinder charge, cylinder piston promotes shift fork and moves; When cylinder was exitted, described return spring promoted shift fork and moves.
A kind of Lightweight project car back axle assembly, comprise: semiaxis, main reduction gear, diff, bevel housing and differential casing, also comprise differential locking-device, described differential locking-device comprises: shift fork, slip engaging sleeve, fixed engagement cover and drive actuating device and the return spring that described shift fork moves; Described slip engaging sleeve is arranged on described semiaxis, and described fixed engagement cover connects with described differential casing; Described shift fork is stirred described slip engaging sleeve and is moved to the direction of described fixed engagement cover under described actuating device effect, and described slip engaging sleeve is meshed with described fixed engagement cover, to limit described semiaxis and described differential casing relatively rotates; Described shift fork is stirred described slip engaging sleeve and is broken away from described fixed engagement cover under the driving of described return spring, and moves to the direction away from described fixed engagement cover.
Preferably, be processed with respectively suitable spline on described semiaxis and described slip engaging sleeve, described slip engaging sleeve is arranged on described semiaxis by described spline.
Preferably, be processed with spline on described differential casing axle journal, described fixed engagement cover connects with described differential casing by described spline.
Preferably, described differential locking-device also comprises: jump ring is used for limiting described fixed engagement cover axially mobile.
Preferably, described actuating device comprises: cylinder and master cock, and described master cock is used for controlling described cylinder charge or venting; When cylinder charge, cylinder piston promotes shift fork and moves; When cylinder was exitted, described return spring promoted shift fork and moves.
Preferably, described back axle assembly also comprises: the cylinder mount pad, be arranged on described bevel housing, and be used for installing described cylinder.
Preferably, described return spring is arranged in described cylinder mount pad.
The differential locking-device that the utility model provides is simple in structure, control comfort, safe and reliable, this differential locking-device is set on Lightweight project car back axle can effectively solves when single wheel skids opposite side wheel and can not bring into play the problem that drives effect, thereby can make the Lightweight project car adapt to better various complex road conditions.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment, apparently, the accompanying drawing that the following describes is only some embodiment that put down in writing in the present invention, for those of ordinary skills, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of slip engaging sleeve in the utility model differential locking-device;
Fig. 2 is the end view of slip engaging sleeve shown in Figure 1;
Fig. 3 is the structural representation of fixed engagement cover in the utility model differential locking-device;
Fig. 4 is the end view of fixed engagement cover shown in Figure 3;
Fig. 5 is the structural representation of shift fork body in the utility model differential locking-device;
Fig. 6 is the structural representation of shifting fork bar in the utility model differential locking-device;
Fig. 7 is the structural representation of the utility model Lightweight project car back axle assembly;
Fig. 8 is the view when in the utility model Lightweight project car back axle assembly, differential locking-device closes;
Fig. 9 is the view when in the utility model Lightweight project car back axle assembly, differential locking-device is thrown off.
Drawing reference numeral:
10 slip engaging sleeves; 20 fixed engagement covers; 11,21 engaging tooths; 12,22 splines;
30 shift forks; 31 shift fork bodies; 32 shifting fork bars; 33 mounting holes; 40 jump rings; 50 cylinders;
71 semiaxis; 710 splines; 72 bevel housings; 73 differential casings; 730 splines;
74 cylinder mount pads; 75 adjust circular nut; 76 differential bearings.
The specific embodiment
In order to make those skilled in the art person understand better the scheme of the embodiment of the present invention, below in conjunction with drawings and embodiments, the embodiment of the present invention is described in further detail.
The utility model provides a kind of differential locking-device, comprising: shift fork, slip engaging sleeve, fixed engagement cover and drive actuating device and the return spring that described shift fork moves.
Fig. 1 is the structural representation of slip engaging sleeve in the utility model differential locking-device, and Fig. 2 is the end view of slip engaging sleeve shown in Figure 1.
Fig. 3 is the structural representation of fixed engagement cover in the utility model differential locking-device, and Fig. 4 is the end view of fixed engagement cover shown in Figure 3.
Be provided with engaging tooth 11 on slip engaging sleeve 10 end face relative with fixed engagement cover 20, same, be provided with engaging tooth 21 on fixed engagement cover 20 end face relative with slip engaging sleeve 10, engaging tooth 21 is suitable with engaging tooth 11.
In the utility model, described shift fork can comprise shift fork body 31 and shifting fork bar 32, and Fig. 5 is the structural representation of shift fork body 31 in the utility model differential locking-device, and Fig. 6 is the structural representation of shifting fork bar 32 in the utility model differential locking-device.
Wherein, shift fork body 31 can be the assembly that separates with shifting fork bar 32, and shift fork body 31 bottoms are provided with mounting hole 33, and shifting fork bar 32 passes mounting hole 33 and is connected with shift fork body 31.Certainly, shift fork body 31 and shifting fork bar 32 can be also one-body molded, and embodiment does not do restriction to this utility model.
In actual applications, slip engaging sleeve 10 need to be arranged on rear axle shaft, fixed engagement cover 20 is connected with differential casing.Shift fork body 31 is enclosed within on slip engaging sleeve 10.Like this, described shift fork is under described actuating device effect, stirring slip engaging sleeve 10 moves to the direction of fixed engagement cover 20, engaging tooth 21 on engaging tooth 11 and fixed engagement cover 20 end faces on slip engaging sleeve 10 end faces is meshed, thereby limits described semiaxis and described differential casing relatively rotates.Described shift fork is stirred slip engaging sleeve 10 and is broken away from fixed engagement cover 20, and move to the direction away from fixed engagement cover 20 under the driving of described return spring.
In order to make fixed engagement cover 20 more firm with connecting of differential casing, differential locking-device of the present utility model also can further comprise: jump ring is used for restriction fixed engagement cover 20 and moves axially.
In the utility model, described actuating device can comprise: cylinder and master cock, and described master cock is used for controlling described cylinder charge or venting; When cylinder charge, cylinder piston promotes shift fork and moves; When cylinder was exitted, described return spring promoted shift fork and moves.
In actual applications, described master cock can be arranged in operator's compartment, described cylinder is arranged on bevel housing, described master cock is controlled described cylinder charge or venting by control circuit.
The differential locking-device that the utility model provides is simple in structure, control comfort, safe and reliable, can effectively solve when single wheel skids opposite side wheel and can not bring into play the problem that drives effect this differential locking-device is set on vehicle rear axle, thereby can make the Lightweight project car adapt to better various complex road conditions.
This differential locking-device is a kind of forced locking, can design on common light duty engineering truck rear-axle differential basis.
Back axle is the rear drive shaft component part that vehicle power transmits.It is comprised of two half-bridges, can implement the half-bridge differential motion.Simultaneously, it is also support wheel and the device that is connected rear wheel.If the vehicle that propons drives, back axle is only just follow-up bridge so, only plays the effect of carrying.If propons is not drive axle, back axle is exactly drive axle so, at this time also plays to drive and slow down except the carrying effect to also have the effect of differential.
For this reason, the utility model also provides a kind of Lightweight project car back axle assembly that comprises above-mentioned differential locking-device, below in conjunction with accompanying drawing, back axle assembly of the present utility model is described in detail.
As shown in Figure 7, be the structural representation of the utility model Lightweight project car back axle assembly.
This back axle assembly comprises: semiaxis 71, main reduction gear (in bevel housing), diff (in differential casing), bevel housing 72 and differential casing 73.
Diff is drive mechanism, device common, indispensable in vehicle.Usually, differential casing is contained on a big gear wheel, and along with big gear wheel is rotated.With big gear wheel, differential gear box center of turn concentric be two axle side gears (sun wheel); Planetary installation, rotation center is vertical and by the axle side gear axle center, its revolution center is exactly the center of turn of big gear wheel, differential gear box, axle side gear.Axle side gear and planetary wheel all are arranged in differential casing.
The utility model Lightweight project car back axle assembly also comprises differential locking-device, and described differential locking-device comprises: shift fork 30, slip engaging sleeve 10, fixed engagement cover 20 and drive actuating device and the return spring that described shift fork moves.
Unlike the prior art be, be processed with spline 710 on described semiaxis 71, and the end to lengthen than the existing semiaxis that does not install differential locking-device additional, such as, lengthen 70mm, other geometric properties remain unchanged.Equally, as shown in Figure 1, be processed with on described slip engaging sleeve 10 with semiaxis 71 on suitable spline 12, described slip engaging sleeve 10 is connected on semiaxis 71 by described spline housing.
More unlike the prior art be, be processed with spline 730 on differential casing 73 axle journals, and axle journal is longer than the existing axle journal that does not install differential locking-device additional, other geometric properties remain unchanged.Equally, as shown in Figure 3, be processed with on described fixed engagement cover 20 with differential casing 73 axle journals on suitable spline 22, described fixed engagement cover 20 connects with described differential casing 73 by described spline.Particularly, fixed engagement cover 20 is sleeved on differential casing 73 axle journal splines 730, is enclosed within and adjusts in circular nut 75, and lean against on differential bearing 76 inner rings, but do not contact with adjustment circular nut 75.Described adjustment circular nut 75 is sleeved on the differential casing axle journal equally, is assemblied on bevel housing 72 by outside thread, and withstands on differential bearing 76 outer rings.Described adjustment circular nut 75 is for adjustment active and passive gear back lash.
In order to make fixed engagement cover 20 more firm with connecting of differential casing 73, can overlap 20 the other end in fixed engagement a jump ring 40 is set, overlap 20 with the restriction fixed engagement and move axially.Jump ring 40 can be to be with C type jump ring jaggy.
In this embodiment, described actuating device comprises: cylinder and master cock, and described master cock is used for controlling described cylinder charge or venting; When cylinder charge, cylinder piston promotes shift fork and moves; When cylinder was exitted, described return spring promoted shift fork and moves.
In actual applications, described master cock can be arranged in operator's compartment, described cylinder is arranged on bevel housing, described master cock is controlled described cylinder charge or venting by control circuit.As shown in Figure 7, cylinder mount pad 74 is set on bevel housing 72, is used for installing cylinder 50.Above-mentioned return spring can be arranged in cylinder mount pad 74.
at work, shift fork 30 is under described actuating device effect, stirring described slip engaging sleeve 10 moves to the direction of described fixed engagement cover 20, described slip engaging sleeve 10 is meshed with described fixed engagement cover 20, thereby realize semiaxis 71, slip engaging sleeve 10, fixed engagement cover 20, differential casing 73 rigid attachment together, restriction semiaxis 71 relatively rotates with differential casing 73, thereby realize that the left and right axle side gear is locked, namely realize the function of differential locking-device, left and right semiaxis rotating speed equates, prevent that trackslipping from appearring in adhesive ability little wheel too early, potential tractive force is given full play to.
Described shift fork 30 is stirred described slip engaging sleeve 10 and is broken away from described fixed engagement cover 20, and move to the direction away from described fixed engagement cover 20 under the driving of described return spring.
Further illustrate the principle of work of Lightweight project car under different road conditions with this back axle assembly below in conjunction with Fig. 7.
When the Lightweight project car is absorbed in pit or enters wet-skid road surface, the cylinder master cock of closing, cylinder 50 inflations move to right, drive shift fork 30, stir differential locking-device and close, semiaxis 71 is locked with differential casing 73, and the left and right semiaxis temporarily is rigidly connected, thereby can prevent the wheel slipping of trackslipping, reduce the propulsive effort of the wheel that do not trackslip.As shown in Figure 8, be view when in the utility model engineering truck back axle assembly, differential locking-device closes.
After the Lightweight project car reaches good road surface, open the cylinder master cock, cylinder 50 venting, return spring promotes shift fork 30 and moves to left, and differential locking-device unclamps certain distance, and such as 5mm, semiaxis disengagement in left and right is rigidly connected, and recovers differential action.As shown in Figure 9, be view when in the utility model engineering truck back axle assembly, differential locking-device is thrown off.
This shows, utilize engineering truck back axle assembly of the present utility model, can effectively solve when single wheel skids opposite side wheel and can not bring into play the problem that drives effect, thereby can make engineering truck adapt to better various complex road conditions.
Need to prove, in the above embodiments, differential locking-device has been arranged on the left half axle of back axle, in actual applications, it can be arranged on right axle shaft, embodiment does not do restriction to this utility model yet.
Each embodiment in this specification sheets all adopts the mode of going forward one by one to describe, and between each embodiment, identical similar part is mutually referring to getting final product, and each embodiment stresses is difference with other embodiment.
Above the utility model embodiment is described in detail, has used the specific embodiment herein the utility model is set forth, the explanation of above embodiment just is used for helping to understand scheme of the present utility model; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (10)
1. a differential locking-device, is characterized in that, comprising: shift fork, slip engaging sleeve, fixed engagement cover and drive actuating device and the return spring that described shift fork moves; Described slip engaging sleeve overlaps on relative end face with described fixed engagement and is respectively equipped with engaging tooth; Described shift fork is stirred described slip engaging sleeve and is moved to the direction of described fixed engagement cover under described actuating device effect, and the engaging tooth on described slip engaging sleeve end face is meshed with the engaging tooth that described fixed engagement is overlapped on end face; Described shift fork is stirred described slip engaging sleeve and is broken away from described fixed engagement cover under the driving of described return spring, and moves to the direction away from described fixed engagement cover.
2. differential locking-device as claimed in claim 1, is characterized in that, described differential locking-device also comprises: jump ring is used for limiting described fixed engagement cover axially mobile.
3. differential locking-device as claimed in claim 1 or 2, is characterized in that, described actuating device comprises: cylinder and master cock, and described master cock is used for controlling described cylinder charge or venting; When cylinder charge, cylinder piston promotes shift fork and moves; When cylinder was exitted, described return spring promoted shift fork and moves.
4. Lightweight project car back axle assembly, comprise: semiaxis, main reduction gear, diff, bevel housing and differential casing, it is characterized in that, also comprise differential locking-device, described differential locking-device comprises: shift fork, slip engaging sleeve, fixed engagement cover and drive actuating device and the return spring that described shift fork moves; Described slip engaging sleeve is arranged on described semiaxis, and described fixed engagement cover connects with described differential casing; Described shift fork is stirred described slip engaging sleeve and is moved to the direction of described fixed engagement cover under described actuating device effect, and described slip engaging sleeve is meshed with described fixed engagement cover, to limit described semiaxis and described differential casing relatively rotates; Described shift fork is stirred described slip engaging sleeve and is broken away from described fixed engagement cover under the driving of described return spring, and moves to the direction away from described fixed engagement cover.
5. Lightweight project car back axle assembly as claimed in claim 4, is characterized in that, is processed with respectively suitable spline on described semiaxis and described slip engaging sleeve, and described slip engaging sleeve is arranged on described semiaxis by described spline.
6. Lightweight project car back axle assembly as claimed in claim 4, is characterized in that, is processed with spline on described differential casing axle journal, and described fixed engagement cover connects with described differential casing by described spline.
7. Lightweight project car back axle assembly as claimed in claim 4, is characterized in that, described differential locking-device also comprises: jump ring is used for limiting described fixed engagement cover axially mobile.
8. Lightweight project car back axle assembly as described in claim 4 to 7 any one, is characterized in that, described actuating device comprises: cylinder and master cock, and described master cock is used for controlling described cylinder charge or venting; When cylinder charge, cylinder piston promotes shift fork and moves; When cylinder was exitted, described return spring promoted shift fork and moves.
9. Lightweight project car back axle assembly as claimed in claim 8, is characterized in that, also comprises: the cylinder mount pad, be arranged on described bevel housing, and be used for installing described cylinder.
10. Lightweight project car back axle assembly as claimed in claim 9, is characterized in that, described return spring is arranged in described cylinder mount pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642251 CN203020075U (en) | 2012-11-29 | 2012-11-29 | Differential lock and rear axle assembly of light-duty engineering truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642251 CN203020075U (en) | 2012-11-29 | 2012-11-29 | Differential lock and rear axle assembly of light-duty engineering truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203020075U true CN203020075U (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220642251 Expired - Fee Related CN203020075U (en) | 2012-11-29 | 2012-11-29 | Differential lock and rear axle assembly of light-duty engineering truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203020075U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104002665A (en) * | 2014-04-25 | 2014-08-27 | 宁波莱姆格迪童车科技有限公司 | Automobile for children |
| CN107345566A (en) * | 2017-08-22 | 2017-11-14 | 卢华清 | Slidingtype differential locking-device |
| CN110206865A (en) * | 2019-05-29 | 2019-09-06 | 郭放 | A kind of differential lock |
-
2012
- 2012-11-29 CN CN 201220642251 patent/CN203020075U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104002665A (en) * | 2014-04-25 | 2014-08-27 | 宁波莱姆格迪童车科技有限公司 | Automobile for children |
| CN104002665B (en) * | 2014-04-25 | 2017-01-04 | 宁波市胜源技术转移有限公司 | A kind of juvenile automobile |
| CN107345566A (en) * | 2017-08-22 | 2017-11-14 | 卢华清 | Slidingtype differential locking-device |
| CN110206865A (en) * | 2019-05-29 | 2019-09-06 | 郭放 | A kind of differential lock |
| CN112703335A (en) * | 2019-05-29 | 2021-04-23 | 郭放 | Differential locking mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171205 Address after: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee after: Beiqi Futian Automobile Co., Ltd. Address before: 262200 Shandong city of Weifang Province Zhucheng City Longyuan Street No. 1 Co-patentee before: Beiqi Futian Automobile Co., Ltd. Patentee before: Feitian, Zhucheng auto technology development corporation, Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20181129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |