CN105156632A - Drive axle self-locking differential - Google Patents
Drive axle self-locking differential Download PDFInfo
- Publication number
- CN105156632A CN105156632A CN201510610142.4A CN201510610142A CN105156632A CN 105156632 A CN105156632 A CN 105156632A CN 201510610142 A CN201510610142 A CN 201510610142A CN 105156632 A CN105156632 A CN 105156632A
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- China
- Prior art keywords
- locking
- movable sheath
- locking movable
- differential casing
- gear
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Classifications
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a drive axle self-locking differential, belonging to the technical field of mechanical transmission. The drive axle self-locking differential comprises a differential housing and a transmission gear, wherein a left half shaft gear, a right half shaft gear and a planetary gear are arranged in the differential housing, and the transmission gear is connected with an input gear shaft in a transmitting manner; a locking activity set is arranged on the right side of the right half shaft gear, and a thrust structure used for controlling the axial movement of the locking activity set is connected to the locking activity set; the thrust structure comprises a shifting fork and a linear actuator capable of realizing self-locking after power failure, and the shifting fork comprises a shifting fork shaft and a shifting fork body; two shifting fork arms of the shifting fork body are connected to the locking activity set, and the shifting fork is connected to the push rod of the linear actuator; the middle of the shifting fork is hinged to the shifting fork shaft, and a torsional spring is arranged at the hinging position; the shifting fork arms can shift the locking activity set to move left under the action force of the torsional spring, and the linear actuator can overcome the action force of the torsional spring to enable the shifting fork arms to shift the locking activity set to move right. The drive axle self-locking differential has the advantages of being low in power consumption, good in self-locking effect and long in service life.
Description
Technical field
The present invention relates to technical field of mechanical transmission, specifically a kind of differential mechanism, especially a kind of ransaxle no-spin lockup.
Background technique
Differential mechanism is a kind of device with transmission of power and power distribution function, its effect is in the process of moving, when vehicle runs into turning, automatically the rotating speed of inside and outside wheel can be regulated, to ensure that foreign steamer can not drag on road surface, avoid the wearing and tearing of tire to aggravate, thus ensure the safety coefficient of moving vehicle, improve the service life of retarder.Common differential mechanism, when running into more severe road conditions, when a certain bridge as beach buggy or farmer's car runs into muddy wet and slippery road surface, because adhesion is inadequate, will produce skidding.
For preventing the generation of skidding, Chinese patent discloses a kind of electromagnetic push no-spin lockup on June 17th, 2015, Authorization Notice No. is CN204403312U, it comprises differential casing, differential mechanism end cap, planetary pinion, left half axle gear and right axle shaft gear, right axle shaft gear has axially extended extension part, extension part is arranged with the locking movable sheath be connected with extension part circumference, the right-hand member of differential mechanism end cap has end tooth one, the left end of locking movable sheath has the end tooth two matched with end tooth one, the right side of locking movable sheath is provided with for promoting the electromagnetic push structure of locking movable sheath along extension part to left movement, Returnning spring is provided with between right axle shaft gear and locking movable sheath.After energising, electromagnetic push structure promotes locking movable sheath along extension part to left movement, end tooth two is engaged with end tooth one, realizes locking.
This electromagnetic push no-spin lockup can prevent vehicle from skidding on muddy road surface, improves trafficability, and long service life, but when lockup state, electromagnetic push structure needs continued power, and power consumption is relatively large.
Summary of the invention
Technical problem to be solved by this invention is to overcome the problems referred to above, and provides that a kind of power consumption is little, self-locking is effective, the ransaxle no-spin lockup of long service life.
Technological scheme of the present invention is:
A kind of ransaxle no-spin lockup, comprise the differential casing that can be rotated to support in ransaxle casing, be connected in the driving gear on differential casing, the left half axle gear coaxially arranged with driving gear is provided with in described differential casing, right axle shaft gear and respectively with a left side, the planetary pinion that right axle shaft gear engages simultaneously, described driving gear is connected with the input gear shaft drive be arranged in ransaxle casing, it is characterized in that: be coaxially provided with locking movable sheath on the right side of right axle shaft gear, this locking movable sheath is set to: move axially the clutch that can realize right axle shaft gear and differential casing by it, thus locking or unblock differential gear, locking movable sheath is connected with the thrust structure moved axially for controlling locking movable sheath, described thrust structure comprises shift fork and the electric pushrod that can realize cutting off self-lock, shift fork comprises declutch shift shaft, shift fork body, one end of described shift fork body is two shift fork arms, be connected on locking movable sheath, the other end is driving lever, be connected on the push rod of electric pushrod, the middle part of shift fork body is hinged on described declutch shift shaft, driving lever swings around declutch shift shaft under the effect of electric pushrod, shift fork arm also synchronous hunting, thus stirs locking movable sheath and move left and right vertically.
In above-mentioned ransaxle no-spin lockup, torsion spring is provided with in the hinged place of shift fork, one end winding support of torsion spring, the other end is connected on shift fork arm, and active force is applied with to shift fork arm, the trend that this active force makes shift fork arm have to stir locking movable sheath and be moved to the left, makes right axle shaft gear and differential casing keep combining; Push rod and the driving lever of electric pushrod are that unidirectional drive is connected, and can overcome the active force of torsion spring and promote driving lever to left movement, making shift fork arm stir locking movable sheath and move right, to be separated right axle shaft gear and differential casing.
In above-mentioned ransaxle no-spin lockup, the annexation of a kind of locking movable sheath and differential casing is: described locking movable sheath is positioned at differential casing, and fixed by spline joint and differential casing circumference, be provided with circumferential limit structure between locking movable sheath and right axle shaft gear.
In this annexation, a kind of circumferential limit structure is: comprise the end tooth one be located on right axle shaft gear right side and the end tooth two arranged that matches with end tooth one be located on locking movable sheath left side, when locking movable sheath is moved to the left, end tooth two engages with end tooth one gradually, right axle shaft gear is combined with differential casing, realizes locking.
Another kind of circumferential limit structure is: right axle shaft gear has the extension part axially extended to the right, described circumferential limit structure comprises the spline one be located on this extension part outer circumferential face and the spline two arranged that matches with spline one be located on locking movable sheath inner peripheral surface, when locking movable sheath is moved to the left, spline two engages with spline one gradually, right axle shaft gear is combined with differential casing, realizes locking.
In above-mentioned ransaxle no-spin lockup, the annexation of another kind of locking movable sheath and differential casing is: described right axle shaft gear has and axially extends to the right and go deep into the extension part in locking movable sheath, locking movable sheath is fixed by spline joint and this extension part circumference, is provided with circumferential limit structure between locking movable sheath and differential casing.
In this annexation, a kind of circumferential limit structure is: locking movable sheath is positioned at the right side of differential casing, described circumferential limit structure comprises the end tooth four be equipped with end tooth three-phase be located at end tooth on differential casing right side three and be located on locking movable sheath left side, when locking movable sheath is moved to the left, end tooth four engages with end tooth three gradually, right axle shaft gear is combined with differential casing, realizes locking.
Another kind of circumferential limit structure is: comprise the spline three be located on differential casing inner peripheral surface and the spline four be equipped with spline three-phase be located on locking movable sheath outer circumferential face, when locking movable sheath is moved to the left, spline four engages with spline three gradually, right axle shaft gear is combined with differential casing, realizes locking.
In above-mentioned ransaxle no-spin lockup, the outer circumferential face of described locking movable sheath has an annular groove, two shift fork arms of shift fork ride in this annular groove.
The working principle of this ransaxle no-spin lockup is as follows:
When travelling in smooth-riding surface, the active force that electric pushrod overcomes torsion spring makes locking movable sheath throw off, and right axle shaft gear and differential casing are in separated state, and now differential mechanism realizes speed output and the differential function of left and right half.When vehicle runs into severe road conditions, start electric pushrod manually or automatically, push rod moves right, then driving lever moves right under the effect of torsion spring, shift fork arm flexibility stirs locking movable sheath to left movement, right axle shaft gear is combined with differential casing, realizes locking.After getting back to smooth-riding surface, start electric pushrod manually or automatically, push rod is to left movement, and the active force overcoming torsion spring makes locking movable sheath again throw off, and unties locking.
The invention has the beneficial effects as follows:
1, adopt and can realize the electric pushrod that the cuts off self-lock drive unit as shift fork, push rod moves to i.e. power-off behind precalculated position to the left or to the right, and push rod still can remain on this position to keep throwing off or lockup state, therefore substantially reduce power consumption, save electric energy.
2, torsion spring is set in the hinged place of shift fork, utilizes the active force flexibility of torsion spring to stir locking movable sheath, stopped motor derive by force cause beat the tooth even consequence of motor damage, extend the working life of differential mechanism.
3, compact structure, miniaturization, locking speed is responsive, locked power is large, effectively can improve the driveability of car load, be applicable to all-terrain vehicle, duck, go-anywhere vehicle, loading vehicle, engineering truck, agricultural vehicle and other refitted cars, can be used for manual gear and automatic catch vehicle, both can be arranged on the right side of car body, also can be arranged on the left side of car body, applied widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of the ransaxle no-spin lockup released state of embodiment 1.
Fig. 2 is the structural representation of the ransaxle no-spin lockup lockup state of embodiment 1.
Fig. 3 is the erection drawing of shift fork and locking movable sheath.
Embodiment
Now the present invention is further illustrated in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to these embodiments.
In describing the invention, it will be appreciated that, orientation indicated by the terms such as "left", "right" or position relationship are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description, instead of indicate or imply that the device of indication or original paper must have specific orientation, therefore can not be interpreted as limitation of the present invention.
(embodiment 1)
As shown in Figure 1, the ransaxle no-spin lockup of the present embodiment comprises differential casing 1, driving gear 2, left half axle gear 3, right axle shaft gear 4 and planetary pinion 5.Differential casing 1 can be rotated to support in ransaxle casing 6, and driving gear 2 is large curved tooth, is connected on differential casing 1, and is in transmission connection with the input gear axle 7 be arranged in ransaxle casing 6.Left half axle gear 3, right axle shaft gear 4 and planetary pinion 5 are all positioned at differential casing 1, and wherein, left and right half gear 3,4 and driving gear 2 are coaxially arranged, and planetary pinion 5 engages with left and right half gear 3,4 respectively simultaneously.
Coaxially be provided with locking movable sheath 8 on the right side of right axle shaft gear 4, this locking movable sheath 8 is positioned at differential casing 1, and is fixed by spline joint and differential casing 1 circumference, is provided with circumferential limit structure between locking movable sheath 8 and right axle shaft gear 4.This circumferential limit structure comprises the end tooth 1 be located on right axle shaft gear 4 right side and the end tooth 2 81 be located on locking movable sheath 8 left side, and end tooth one matches with 41 end teeth 2 81 and arranges.When locking movable sheath 8 is moved to the left, end tooth 2 81 engages with end tooth 1 gradually, right axle shaft gear 4 is combined with differential casing 1, realizes locking.Locking movable sheath 8 is connected with the thrust structure moved axially for controlling locking movable sheath 8.
Thrust structure comprises shift fork 9 and the electric pushrod 10 that can realize cutting off self-lock.Shift fork 9 comprises declutch shift shaft 91, shift fork body, and as shown in Figure 3, one end of shift fork body is two shift fork arms 92, ride in an annular groove 82 that locking movable sheath 8 outer circumferential face is offered, the other end is driving lever 93, is connected on the push rod of electric pushrod 10, and the middle part of shift fork body is hinged on declutch shift shaft 91.Driving lever 93 swings around declutch shift shaft 91 under the effect of electric pushrod 10, shift fork arm 92 also synchronous hunting, thus stirs locking movable sheath 8 and move left and right vertically.
Torsion spring 94 is provided with in the hinged place of shift fork 9, one end winding support of torsion spring 94 is connected on the inwall of ransaxle casing 6, the other end is connected on shift fork arm 92, and active force is applied with to shift fork arm 92, the trend that this active force makes shift fork arm 92 have to stir locking movable sheath 8 and be moved to the left, makes right axle shaft gear 4 and differential casing 1 keep combining.The push rod of electric pushrod 10 is with driving lever 93 for unidirectional drive is connected, and push rod promotes driving lever 93 to left movement to overcoming the active force of torsion spring 94 during left movement, and unclamp driving lever 93 when push rod moves right, driving lever 93 moves right under the active force of torsion spring 94.
When travelling in smooth-riding surface, as shown in Figure 1, the active force that electric pushrod 10 overcomes torsion spring 94 makes locking movable sheath 8 throw off, and right axle shaft gear 4 and differential casing 1 are in separated state, and now differential mechanism realizes speed output and the differential function of left and right half.When vehicle runs into severe road conditions, start electric pushrod 10 manually or automatically, push rod moves right, then driving lever 93 moves right under the effect of torsion spring 94, and shift fork arm 92 flexibility stirs locking movable sheath 8 to left movement, as shown in Figure 2, the end tooth 2 81 of locking movable sheath 8 is engaged with the end tooth 1 of right axle shaft gear 4, thus right axle shaft gear 4 is combined with differential casing 1, realize locking, effectively prevent wheel-slip.
(embodiment 2)
The present embodiment is substantially the same manner as Example 1, difference is: in the present embodiment, right axle shaft gear has the extension part axially extended to the right, circumference limit structure comprises the spline one be located on this extension part outer circumferential face and the spline two be located on locking movable sheath inner peripheral surface, and spline one and spline two-phase are equipped with.When locking movable sheath is moved to the left, spline two engages with spline one gradually, right axle shaft gear is combined with differential casing, realizes locking.
(embodiment 3)
The present embodiment is substantially the same manner as Example 1, difference is: in the present embodiment, right axle shaft gear has and axially extends to the right and go deep into the extension part in locking movable sheath, locking movable sheath is fixed by spline joint and this extension part circumference, is provided with circumferential limit structure between locking movable sheath and differential casing.This circumferential limit structure comprises the end tooth three be located on differential casing right side and the end tooth four be located on locking movable sheath left side, and end tooth three matches with end tooth four and arranges.When locking movable sheath is moved to the left, end tooth four engages with end tooth three gradually, right axle shaft gear is combined with differential casing, realizes locking.
(embodiment 4)
The present embodiment is substantially the same manner as Example 3, difference is: in the present embodiment, circumference limit structure is comprise the spline three be located on differential casing inner peripheral surface and the spline four be located on locking movable sheath outer circumferential face, and spline three matches with spline four and arranges.When locking movable sheath is moved to the left, spline four engages with spline three gradually, right axle shaft gear is combined with differential casing, realizes locking.
Be understandable that, for the person of ordinary skill of the art, other various corresponding change and distortion can be made by technical conceive according to the present invention, and all these change the protection domain that all should belong to the claims in the present invention with distortion.
Claims (9)
1. a ransaxle no-spin lockup, comprise the differential casing that can be rotated to support in ransaxle casing, the driving gear be connected on differential casing, the left half axle gear, right axle shaft gear and the planetary pinion that simultaneously engages with left and right half gear respectively that coaxially arrange with driving gear is provided with in described differential casing, described driving gear is connected with the input gear shaft drive be arranged in ransaxle casing, it is characterized in that:
Coaxially be provided with locking movable sheath on the right side of right axle shaft gear, this locking movable sheath is set to: move axially the clutch that can realize right axle shaft gear and differential casing by it, thus locking or unblock differential gear;
Locking movable sheath is connected with the thrust structure moved axially for controlling locking movable sheath;
Described thrust structure comprises shift fork and the electric pushrod that can realize cutting off self-lock, shift fork comprises declutch shift shaft, shift fork body, one end of described shift fork body is two shift fork arms, be connected on locking movable sheath, the other end is driving lever, be connected on the push rod of electric pushrod, the middle part of shift fork body is hinged on described declutch shift shaft; Driving lever swings around declutch shift shaft under the effect of electric pushrod, shift fork arm also synchronous hunting, thus stirs locking movable sheath and move left and right vertically.
2. according to ransaxle no-spin lockup according to claim 1, it is characterized in that: be provided with torsion spring in the hinged place of shift fork, one end winding support of torsion spring, the other end is connected on shift fork arm, and active force is applied with to shift fork arm, the trend that this active force makes shift fork arm have to stir locking movable sheath and be moved to the left, makes right axle shaft gear and differential casing keep combining; Push rod and the driving lever of electric pushrod are that unidirectional drive is connected, and can overcome the active force of torsion spring and promote driving lever to left movement, making shift fork arm stir locking movable sheath and move right, to be separated right axle shaft gear and differential casing.
3. according to ransaxle no-spin lockup according to claim 2, it is characterized in that: described locking movable sheath is positioned at differential casing, and fixed by spline joint and differential casing circumference, be provided with circumferential limit structure between locking movable sheath and right axle shaft gear.
4. according to ransaxle no-spin lockup according to claim 3, it is characterized in that: described circumferential limit structure comprises the end tooth one be located on right axle shaft gear right side and the end tooth two arranged that matches with end tooth one be located on locking movable sheath left side, when locking movable sheath is moved to the left, end tooth two engages with end tooth one gradually, right axle shaft gear is combined with differential casing, realizes locking.
5. according to ransaxle no-spin lockup according to claim 3, it is characterized in that: right axle shaft gear has the extension part axially extended to the right, described circumferential limit structure comprises the spline one be located on this extension part outer circumferential face and the spline two arranged that matches with spline one be located on locking movable sheath inner peripheral surface, when locking movable sheath is moved to the left, spline two engages with spline one gradually, right axle shaft gear is combined with differential casing, realizes locking.
6. according to ransaxle no-spin lockup according to claim 2, it is characterized in that: described right axle shaft gear has and axially extends to the right and go deep into the extension part in locking movable sheath, locking movable sheath is fixed by spline joint and this extension part circumference, is provided with circumferential limit structure between locking movable sheath and differential casing.
7. according to ransaxle no-spin lockup according to claim 6, it is characterized in that: locking movable sheath is positioned at the right side of differential casing, described circumferential limit structure comprises the end tooth four be equipped with end tooth three-phase be located at end tooth on differential casing right side three and be located on locking movable sheath left side, when locking movable sheath is moved to the left, end tooth four engages with end tooth three gradually, right axle shaft gear is combined with differential casing, realizes locking.
8. according to ransaxle no-spin lockup according to claim 6, it is characterized in that: described circumferential limit structure comprises the spline four be equipped with spline three-phase be located at spline on differential casing inner peripheral surface three and be located on locking movable sheath outer circumferential face, when locking movable sheath is moved to the left, spline four engages with spline three gradually, right axle shaft gear is combined with differential casing, realizes locking.
9. according to ransaxle no-spin lockup according to claim 1, it is characterized in that: the outer circumferential face of described locking movable sheath has an annular groove, two shift fork arms of shift fork ride in this annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510610142.4A CN105156632B (en) | 2015-09-23 | 2015-09-23 | Drive axle no-spin lockup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510610142.4A CN105156632B (en) | 2015-09-23 | 2015-09-23 | Drive axle no-spin lockup |
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| Publication Number | Publication Date |
|---|---|
| CN105156632A true CN105156632A (en) | 2015-12-16 |
| CN105156632B CN105156632B (en) | 2018-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510610142.4A Active CN105156632B (en) | 2015-09-23 | 2015-09-23 | Drive axle no-spin lockup |
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| Country | Link |
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| CN (1) | CN105156632B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339400A (en) * | 2017-07-21 | 2017-11-10 | 重庆鼎祥钢结构工程有限公司 | Differential lock, differential mechanism, drive axle and automobile based on split type semiaxis |
| 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 |
| CN114704607A (en) * | 2022-03-25 | 2022-07-05 | 蔚来动力科技(合肥)有限公司 | Disconnecting differential and electric drive transmission system with same |
| CN114962638A (en) * | 2021-08-03 | 2022-08-30 | 长城汽车股份有限公司 | Control method and device of front axle separator, electronic equipment and vehicle |
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| CN2053276U (en) * | 1989-09-02 | 1990-02-21 | 许长钰 | Driving bridge of car with differential lock |
| JP2000179650A (en) * | 1998-12-11 | 2000-06-27 | Tochigi Fuji Ind Co Ltd | Power free running differential gear |
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| CN102141132A (en) * | 2010-02-03 | 2011-08-03 | 本田技研工业株式会社 | Vehicle differential gear |
| CN104500686A (en) * | 2014-12-26 | 2015-04-08 | 温岭市华鑫机械制造有限公司 | Electronic differential rear axle of all-terrain vehicle |
| CN205001470U (en) * | 2015-09-23 | 2016-01-27 | 温岭市华鑫机械制造有限公司 | Transaxle no -spin lockup |
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| CN2053276U (en) * | 1989-09-02 | 1990-02-21 | 许长钰 | Driving bridge of car with differential lock |
| JP2000179650A (en) * | 1998-12-11 | 2000-06-27 | Tochigi Fuji Ind Co Ltd | Power free running differential gear |
| RU2165043C1 (en) * | 1999-08-09 | 2001-04-10 | Открытое акционерное общество "КАМАЗ" | Vehicle center differential positive interlocking mechanism |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339400A (en) * | 2017-07-21 | 2017-11-10 | 重庆鼎祥钢结构工程有限公司 | Differential lock, differential mechanism, drive axle and automobile based on split type semiaxis |
| CN114962638A (en) * | 2021-08-03 | 2022-08-30 | 长城汽车股份有限公司 | Control method and device of front axle separator, electronic equipment and vehicle |
| CN114962638B (en) * | 2021-08-03 | 2023-06-30 | 长城汽车股份有限公司 | Control method and device of front axle separator, electronic equipment and vehicle |
| 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 |
| CN114704607A (en) * | 2022-03-25 | 2022-07-05 | 蔚来动力科技(合肥)有限公司 | Disconnecting differential and electric drive transmission system with same |
| CN114704607B (en) * | 2022-03-25 | 2024-11-19 | 蔚来动力科技(合肥)有限公司 | Disconnect type differential and electric drive transmission system having the same |
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|---|---|
| CN105156632B (en) | 2018-08-10 |
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