CN106678329A - Sleeve shaft type differential locking mechanism - Google Patents
Sleeve shaft type differential locking mechanism Download PDFInfo
- Publication number
- CN106678329A CN106678329A CN201611248937.6A CN201611248937A CN106678329A CN 106678329 A CN106678329 A CN 106678329A CN 201611248937 A CN201611248937 A CN 201611248937A CN 106678329 A CN106678329 A CN 106678329A
- Authority
- CN
- China
- Prior art keywords
- chain wheel
- piston
- blocking mechanism
- differential
- mechanism according
- Prior art date
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/32—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using fluid pressure actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
- F16H48/40—Constructional details characterised by features of the rotating cases
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Retarders (AREA)
Abstract
The invention provides a sleeve shaft type differential locking mechanism. The locking mechanism is arranged on a half shaft in a drive axle and connected with a differential shell, and comprises a spring, a chain wheel, a chain wheel bracket for fixing the chain wheel, a slide block, a piston, a bearing base and a steel sleeve arranged on the outer sides of the parts, which are arranged in the same one axial direction in sequence; and the chain wheel and the piston, the piston and the bearing base, and the piston and the steel sleeve are all coaxial. The locking mechanism adopts a more compact structure to realize a differential locking function, prevents the structure of projecting such devices as a poking fork on the side surface of an output end, reduces the total size of the drive axle, radially positions the piston and the steel sleeve through dowel pins, and prevents the piston from rotating in the working process to cause abnormal wear.
Description
Technical field：
The present invention relates to a kind of blocking mechanism, and in particular to a kind of sleeve shaft-type differential mechanism blocking mechanism.
Background technology：
The drive axle of vehicle is located at the end of power train, and its basic training is with being increased by power transmission shaft or directly by variator biography
The torque for coming, by torque left and right driving wheel is distributed to, and drives running car.
Drive axle is mainly made up of main reducing gear, differential mechanism, axle housing and left and right half assembly.Main reducing gear is by a pair
Bevel gear set into, its effect be by power transmission shaft transmit motion and torque carry out reduction of speed and increase moment of torsion, pass to differential mechanism, and
The Plane of rotation of power transmission shaft is turned into 90 ° of angles.Bevel-gear sett in main reducing gear, is supported respectively by a pair of cone bearings.Differential mechanism
Effect be to separate on the wheel shaft of left and right wheelses, it is allowed to left and right wheelses with different rotating speeds rotation, with meet left and right wheelses traveling speed
The requirement that degree is not waited, it is to avoid relative slip is produced between wheel tyre and base plate road surface, so as to slow down the abrasion of tire；Work as side
When the phenomenons such as skidding occurs in tire, need to drive both sides tire simultaneously, by locking differential lock, it is ensured that enough pull strengths make car
Normal walking.The effect of semiaxis is that the power of differential mechanism is reached into wheel side power transmission shaft, realizes the power output of drive axle.Drive
Axle shell is the support member of whole drive axle, and each part in drive axle is played a supportive role.
Differential mechanism is divided into common symmetric formula cone planetary gear differential mechanism and limited slip differential, common symmetric formula circular cone planet
It is poor by property when road surface is met difficulty without differential lock in gear differential mechanism, therefore it is preferable to be generally used for various road surfaces
In on-highway vehicle.Limited slip differential is mostly adopted by the ability of ice and snow, muddy and soft terrain in order to improve.Anti-slip differential
Device is divided into locking differential and differential gear with self-locking device.Differential gear with self-locking device realizes closing for differential mechanism according to the situation on road surface
Lock and separate, not by manual control, the phenomenon of locking occurs in some occasions for being not required to locking, bring to manual control vehicle
Certain impact.Locking differential can go to control the locking of differential mechanism according to artificial wish, realize the normal of vehicle
Traveling.
At present, in order to improve vehicle by property, the drive axle of most of vehicles all adopts forced blocking formula differential mechanism.I.e.
Be machined with end-tooth in one end of differential casing, when run into the difficult road surface such as skid when, in order to improve vehicle by property, lead to
Artificial control realization locking differential mechanism is crossed, one end is covered by tooth and is connected with differential casing, one end is connected with semiaxis, a realization left side,
The output completely of right axle shaft two ends power.
Forced blocking formula differential mechanism mostly adds the structure of tooth set, piston to cover not coaxial with tooth, so exist using piston, shift fork
The output shaft line side face of drive axle can project the structure of piston and shift fork so that the volume increase of drive axle, be unfavorable for drive axle
In the arrangement of car load.
The content of the invention：
To solve above-mentioned the deficiencies in the prior art, the invention discloses a kind of sleeve shaft-type differential mechanism blocking mechanism, described to close
Latch mechanism located at drive axle inside semiaxis on be connected with differential casing, including the spring, chain wheel for setting gradually along the same axis,
Fix chain wheel bearing, slide block, piston, bearing block and the steel bushing on the outside of above-mentioned part of chain wheel, it is characterised in that the tooth
Disk adopts coaxial configuration with piston, piston and bearing block, piston and steel bushing, and it is radially fixed that piston is carried out with steel bushing using alignment pin
Position.
First optimal technical scheme is that the spring supporting is fixed on the chain wheel in the chain wheel bearing, the chain wheel
On bearing, the chain wheel is provided with groove away from the spring one end, and the groove shapes are adapted with the slider shape.
Second optimal technical scheme is, it is characterised in that the piston is made up of stepped cylindrical, is provided with vertically more than institute
The through hole of half shaft diameter is stated, the stepped cylindrical the first cylindrical section end face is with the chain wheel groove away from the spring one end face
Ensure certain distance, and be provided with concentric with the chain wheel and with diameter greater than the hole of half shaft diameter vertically.
3rd optimal technical scheme is that the cylindrical section of the piston first is with diameter greater than the second cylindrical section, first cylinder
Section side and the second cylindrical section side distance between the surface are less than distance between the inner and outer surfaces of the bearing block relevant position, the axle
Circumferentially arranged with O-ring 1 at socketed inner surface and the second cylindrical section cooperation.
4th optimal technical scheme is that, circumferentially arranged with O-ring 2, the bearing block is near institute for the bearing block outer surface
The one end of O-ring 2 is stated circumferentially arranged with annular protrusion.
5th optimal technical scheme is that the steel bushing inner surface circumferentially sets with the first cylindrical section of piston coupling part
There is O-ring 3.
6th optimal technical scheme is that the differential casing is provided with and the chain wheel near the side end face of the spring one
The tooth being meshed.
7th optimal technical scheme is that the chain wheel is connected by spline with semiaxis, in the semiaxis and the differential mechanism
Axle shaft gear pass through spline connection.
8th optimal technical scheme is that the slide block is highly more than the depth of groove, its top and table in the steel bushing
Gap is provided between face.
With immediate prior art ratio, the present invention provide technical scheme there is following excellent effect：
1st, employing of the invention realizes the function of differential mechanism locking compared with compact structure, it is to avoid prominent in outfan side
Go out the structure of the devices such as shift fork, reduce the overall dimensions of drive axle.
The 2nd, alignment pin is set between piston and steel bushing, it is to avoid piston rotates cause improper mill in the course of the work
Damage.
3rd, the piston is fixed on the semiaxis by spline, and the semiaxis leads to the axle shaft gear in the differential mechanism
Cross spline connection so that semiaxis and the same speed rotation of differential casing and axle shaft gear, axle shaft gear is in differential
Only revolve round the sun without autobiography in device, two ends axle shaft gear rotating speed is identical, and vehicle is along straight-line travelling.
Description of the drawings
Fig. 1 is installation profile of the technical solution of the present invention in drive axle；
Fig. 2 is the steel bushing profile of the present invention；
Fig. 3 is the bearing block profile of the present invention.
Description of reference numerals：
1- springs；2- chain wheels；3- chain wheel bearings；4- slide blocks；5- pistons；6- bearing blocks；7- steel bushings；8- axle housings.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, with reference in the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is this
A part of embodiment in invention, rather than the embodiment of whole.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment of all acquisitions, belongs to protection scope of the present invention on the premise of creative work is not paid.
The technical scheme that the present invention is provided is elaborated below in conjunction with the accompanying drawings.
Embodiment one
As Figure 1-3, a kind of sleeve shaft-type differential mechanism blocking mechanism for providing for the present invention, the blocking mechanism is located at drive
It is connected with differential casing on the semiaxis of dynamic bridge inside, including the spring 1, chain wheel 2 for setting gradually along the same axis, fixed chain wheel 2
Chain wheel bearing 3, slide block 4, piston 5, bearing block 6 and the steel bushing on the outside of above-mentioned part 7, it is the chain wheel 2 and piston 5, living
Plug 5 adopts coaxial configuration, piston 5 to carry out radial positioning, the connection of the spring 1 institute using alignment pin with steel bushing 7 with bearing block 6
Chain wheel bearing 3 is stated, the chain wheel 2 is fixed on the chain wheel bearing 3, and the chain wheel 2 is provided with recessed away from the one end of the spring 1
Groove, the groove shapes are adapted with the shape of the slide block 4, and the piston 5 is made up of stepped cylindrical, is provided with vertically more than institute
The through hole of half shaft diameter is stated, the stepped cylindrical the first cylindrical section end face is with the groove of the chain wheel 2 away from the spring one end
Face ensures certain distance, and is provided with concentric with the chain wheel 2 and with diameter greater than the hole of half shaft diameter vertically, described the
One cylindrical section is less than institute with diameter greater than the second cylindrical section, the first cylindrical section side with the second cylindrical section side distance between the surface
Distance between bearing block inner and outer surfaces is stated, the bearing base inner surface is near described first cylindrical section one end circumferentially arranged with O-ring
1, away from described first cylindrical section one end circumferentially arranged with O-ring 2, the bearing block is near the O for the outer surface of the bearing block 6
, circumferentially arranged with annular protrusion, the inner surface of the steel bushing 7 is with the cylindrical section coupling part of the piston 5 first along week for the one end of type circle 2
To O-ring 3 is provided with, the differential casing is provided with the tooth being meshed with the chain wheel 2 near the side end face of the spring 1 one,
The chain wheel 2 is connected by spline with semiaxis, and the semiaxis passes through spline connection with the axle shaft gear in the differential mechanism.
Embodiment two
The present invention is achieved in that when differential mechanism locking is needed driver connects ventilation switch, with certain pressure
Gas by axle housing 8, steel bushing 7, bearing block 6, piston 5 is promoted with the compression springs such as movable chain wheel 21, to differential casing direction
Mobile, chain wheel 2 is combined with the end-tooth on differential casing, realizes differential mechanism locking, when differential mechanism locking is not needed, is disconnected
Source of the gas, the spring 1 of original compression is acted on self-return by elastic force, promotes piston 5, chain wheel bearing 3, chain wheel 2 to away from differential mechanism side
To motion, until piston 5 is pressed close to the end face of bearing block 6, the end-tooth of piston 5 is separated with differential casing end-tooth, works as differential mechanism
During locking, the end-tooth of piston 5 is meshed with differential casing end-tooth, and piston 5 is revolved with differential casing with same rotational speed
Turn, piston is connected with right axle shaft by spline, and right axle shaft is connected with the axle shaft gear in differential mechanism by spline so that semiaxis and
The identical rotating speed rotation of differential casing and axle shaft gear, axle shaft gear only revolves round the sun in differential mechanism, without rotation,
Two ends axle shaft gear rotating speed is identical, makes that the output speed of two ends semiaxis is identical, and vehicle is along straight-line travelling.
In differential mechanism locking, chain wheel 2 rotates with differential casing, but in the course of the work, piston 5 and chain wheel bearing
3 is geo-stationary, in order to avoid the irregular wear of the grade part of piston 5, static parts turn is prevented, in piston and chain wheel
Between employ slide block structure, the column part of slide block 4 is fixedly mounted between piston 5 and chain wheel bearing 6, and square head portion is arranged on
In the turning slot of chain wheel 2, when chain wheel 2 is rotated, the two sides of slide block 4 produce Relative friction with the cannelure of chain wheel 2.In order to prevent piston
There is rotation in the non-rotating parts such as 5, are installed with steel bushing 7 by piston alignment pin in the structure shown here, so as to limit piston and chain wheel
The rotary motion of support base.
The present invention is using realizing the function of differential mechanism locking compared with compact structure, it is to avoid projects in outfan side and dials
The structure of the devices such as fork, reduces the overall dimensions of drive axle so that arrangement is more convenient, and saves the space of car load.
While blocking function is realized, the non-rotating part such as piston is avoided by piston alignment pin rotate in the course of the work and lead
Cause heel and toe wear.
Finally it should be noted that：Above example is only to illustrate the technical scheme of the application rather than to its protection domain
Restriction, although being described in detail to the application with reference to above-described embodiment, those of ordinary skill in the art should
Understand：Those skilled in the art to read and still can carry out a variety of changes, modification to the specific embodiment applied after the application
Or equivalent, but these changes, modification or equivalent, applying within pending claims.
Claims (8)
1. a kind of sleeve shaft-type differential mechanism blocking mechanism, the blocking mechanism connects on the semiaxis of drive axle inside with differential casing
Connect, the spring that sets gradually along the same axis including just set and inside it, chain wheel, the chain wheel bearing of fixed chain wheel, slide block,
Piston and bearing block, it is characterised in that the chain wheel adopts coaxial configuration with piston, piston and bearing block, piston and steel bushing,
Piston carries out radial positioning with steel bushing using alignment pin.
2. blocking mechanism according to claim 1, it is characterised in that the spring supporting is described in the chain wheel bearing
Chain wheel is fixed on the chain wheel bearing, and the chain wheel is provided with groove away from the spring one end, the groove shapes with it is described
Slider shape is adapted.
3. blocking mechanism according to claim 2, it is characterised in that the piston is made up of stepped cylindrical, is set vertically
There is the through hole more than half shaft diameter, the stepped cylindrical the first cylindrical section end face is with the chain wheel groove away from the bullet
Spring end face ensures certain distance, and is provided with concentric with the chain wheel and with diameter greater than the hole of half shaft diameter vertically.
4. blocking mechanism according to claim 3, it is characterised in that the cylindrical section of the piston first is with diameter greater than the second circle
Shell of column, the first cylindrical section side is inside and outside less than the bearing block relevant position with the second cylindrical section side distance between the surface
Circumferentially arranged with O-ring 1 at distance between the surface, the bearing base inner surface and the second cylindrical section cooperation.
5. blocking mechanism according to claim 4, it is characterised in that the bearing block outer surface is circumferentially arranged with O-ring
2, the bearing block is near the one end of the O-ring 2 circumferentially arranged with annular protrusion.
6. blocking mechanism according to claim 1, it is characterised in that the steel bushing inner surface and the cylinder of the piston first
Section coupling part is circumferentially arranged with O-ring 3.
7. blocking mechanism according to claim 1, it is characterised in that the differential casing is near the side of the spring one
Face is provided with the tooth being meshed with the chain wheel.
8. blocking mechanism according to claim 1, it is characterised in that the chain wheel is connected by spline with semiaxis, described
Semiaxis passes through spline connection with the axle shaft gear in the differential mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611248937.6A CN106678329A (en) | 2016-12-29 | 2016-12-29 | Sleeve shaft type differential locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611248937.6A CN106678329A (en) | 2016-12-29 | 2016-12-29 | Sleeve shaft type differential locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106678329A true CN106678329A (en) | 2017-05-17 |
Family
ID=58873210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611248937.6A Pending CN106678329A (en) | 2016-12-29 | 2016-12-29 | Sleeve shaft type differential locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106678329A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029535A (en) * | 2021-02-26 | 2021-06-25 | 一汽解放汽车有限公司 | Differential lock cylinder wear test device |
| CN114087336A (en) * | 2021-11-10 | 2022-02-25 | 东风汽车集团股份有限公司 | Locking structure of differential mechanism and driving system with locking function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2059523A (en) * | 1979-09-26 | 1981-04-23 | Maschf Augsburg Nuernberg Ag | A Locking Differential Gear for the Driving Axle of a Motor Vehicle |
| JPS6045429A (en) * | 1983-08-23 | 1985-03-11 | Iseki & Co Ltd | Housing for brake apparatus and differential locking apparatus for agricultural tractor |
| CN201241946Y (en) * | 2008-08-19 | 2009-05-20 | 一拖(洛阳)开创装备科技有限公司 | Hydraulic differential lock for tractor |
| CN201526658U (en) * | 2009-11-11 | 2010-07-14 | 中国一拖集团有限公司 | Electrohydraulic-controlled castellated differential lock used for tractor |
| CN102537274A (en) * | 2010-11-29 | 2012-07-04 | 张惠杰 | Mechanical lock type differential mechanism |
-
2016
- 2016-12-29 CN CN201611248937.6A patent/CN106678329A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2059523A (en) * | 1979-09-26 | 1981-04-23 | Maschf Augsburg Nuernberg Ag | A Locking Differential Gear for the Driving Axle of a Motor Vehicle |
| JPS6045429A (en) * | 1983-08-23 | 1985-03-11 | Iseki & Co Ltd | Housing for brake apparatus and differential locking apparatus for agricultural tractor |
| CN201241946Y (en) * | 2008-08-19 | 2009-05-20 | 一拖(洛阳)开创装备科技有限公司 | Hydraulic differential lock for tractor |
| CN201526658U (en) * | 2009-11-11 | 2010-07-14 | 中国一拖集团有限公司 | Electrohydraulic-controlled castellated differential lock used for tractor |
| CN102537274A (en) * | 2010-11-29 | 2012-07-04 | 张惠杰 | Mechanical lock type differential mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029535A (en) * | 2021-02-26 | 2021-06-25 | 一汽解放汽车有限公司 | Differential lock cylinder wear test device |
| CN114087336A (en) * | 2021-11-10 | 2022-02-25 | 东风汽车集团股份有限公司 | Locking structure of differential mechanism and driving system with locking function |
| CN114087336B (en) * | 2021-11-10 | 2023-10-03 | 东风汽车集团股份有限公司 | Locking structure of differential mechanism and driving system with locking function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170517 |