CN103939570A - Hydraulic antiskid self-locking differential mechanism - Google Patents
Hydraulic antiskid self-locking differential mechanism Download PDFInfo
- Publication number
- CN103939570A CN103939570A CN201410169988.4A CN201410169988A CN103939570A CN 103939570 A CN103939570 A CN 103939570A CN 201410169988 A CN201410169988 A CN 201410169988A CN 103939570 A CN103939570 A CN 103939570A
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- China
- Prior art keywords
- differential
- differential mechanism
- piston rod
- skid
- piston
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16H48/22—Arrangements for suppressing or influencing the differential action, e.g. locking devices using friction clutches or brakes
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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
- 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
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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
- F16H2048/204—Control of arrangements for suppressing differential actions
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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 discloses a hydraulic antiskid self-locking differential mechanism, and belongs to the technical field of differential mechanisms. The hydraulic antiskid self-locking differential mechanism comprises a differential mechanism body and a hydraulic differential lock matched with the differential mechanism body, and the hydraulic differential lock comprises a differential lock hub, a piston rod, a pressure plate and a spline sleeve arranged on a left half shaft inside the differential mechanism body. A driving friction plate and a driven friction plate are arranged outside the spline sleeve. When a tire skids, a piston pushes the piston rod under the action of pressure oil and then pushes the pressure plate to compress the friction plates, a driven spiral bevel gear directly transfers power to the half shaft through a differential mechanism shell, and the differential mechanism body does not work at this moment. The hydraulic antiskid self-locking differential mechanism has the advantages that the structure is simple, manufacturing is easy, and the differential and torque-differential-free function of a common differential mechanism is achieved; when a vehicle skids or falls into mud, the common differential mechanism can be completely locked through the antiskid self-locking function, all torque can be transferred, the vehicle is prevented from skidding, and the trafficability characteristic of the vehicle is improved.
Description
Technical field
The present invention relates to a kind of differential mechanism, specifically a kind of hydraulic type anti-skid no-spin lockup.
Background technique
Open differential has the torsion pass characteristic of " differential is poor turning round not ", and it allows both sides semiaxis with different rotating speed rotations, reduces the friction on tire and ground, if disregard friction torque, can think that the moment of giving left and right semiaxis equates.But this " differential is poor turning round not " characteristic of open differential, can travel and bring adverse effect to machinery, in the time that vehicle is got down hopeless in a quagmire, because adhesion is inadequate, will skid.At this moment the driving force of another wheel not only can not increase, and can reduce on the contrary the same with slip wheel, causes the tractive force of complete machine to greatly reduce.If tractive force can not overcome running resistance, the wheel now skidding is to double the rotational speed of differential carrier.And opposite side does not rotate, before now complete machine stops not.
In order to overcome this shortcoming of open differential, having substantially at present two class methods, a class is both at home and abroad to adopt differential lock that differential mechanism was lost efficacy, and another kind of is the internal drag that increases differential mechanism, limit slippage.In prior art, limited-slip differential can increase the driving force of a side at a slow speed automatically, especially while being uneven or taking a sudden turn on road surface, the excessive friction torque of this automatic increase will affect differential performance, cause tire wear aggravation, the adverse consequencess such as fuel consume increases, hard steering, and this problem is more serious along with the increase of clutch frictional torque.
Summary of the invention
The object of this invention is to provide a kind of simple in structure and there is the differential mechanism of hydraulic type anti-skid auto-lock function, the present invention had both had the characteristic of open differential " differential is poor turning round not ", and can overcome when needed this specific character adverse effect, can avoid again limited-slip differential automatically to increase the caused adverse consequences of friction torque.
Technological scheme of the present invention is: a kind of hydraulic type anti-skid no-spin lockup, the differential lock that comprises differential mechanism and coordinate with differential mechanism, described differential mechanism comprises the left shell of the differential mechanism being connected as one by bolt, differential right casing and bevel driven, also comprises by straight pin and bearing pin and is fixed on bevel gear and the differential gear in differential mechanism;
Described differential lock is hydraulic type differential lock, and it comprises the differential lock hub body that is built-in with hydraulic pressure oil duct, and differential lock hub body is sleeved on left half axle and by bearings on the left shell of differential mechanism;
Between the left shell of differential mechanism and left half axle, be provided with hollow slidably piston rod, piston rod cooperation is arranged on left half axle, is provided with the dish spring that piston rod is moved to the left between the left shell of piston rod and differential mechanism; Described piston rod left end is fixed with the piston with the sliding connection of differential lock hub body, between piston and differential lock hub body, is provided with sealing cavity volume, and sealing cavity volume is communicated with described hydraulic pressure oil duct; Described piston rod right-hand member is installed with platen;
On the left half axle of differential mechanism inner volume, be installed with spline housing; Described spline housing is externally connected with active friction plate; Be arranged at intervals with successively driven friction disk with described active friction plate, the outer of driven friction disk is connected with the left shell of differential mechanism; Being describedly provided with right bearing plate from, active friction plate right side, left side is provided with left bearing plate; Described left bearing plate left side is near described platen.
It is further: between described bevel gear and differential right casing, be provided with spherical pad, spherical pad is enclosed within on bearing pin, on spherical pad external diameter, has projection, the groove that differential right casing is provided with and spherical pad projection coordinates.
Between described differential gear and differential right casing, there is differential gear pad.
Described differential lock hub body medial extremity is provided with vertically first shaft shoulder extending, first shaft shoulder by bearings on the left shell of differential mechanism; Between bearing and differential lock hub body, there is bearing shim.
Between described piston left end outer surface and differential lock hub body inwall, be provided with piston packing I, between piston right-hand member outer surface and differential lock hub body inwall, be provided with piston packing II.
Described piston rod right-hand member is provided with second shaft shoulder, and described platen is sleeved on piston rod, and platen left surface is near second shaft shoulder, and platen right flank is provided with the first back-up ring that compresses platen; Described the first back-up ring is fixed on the outer surface of piston rod.
Described spline housing internal surface is connected with left half axle by spline, and spline housing outer surface is connected with the internal tooth of active friction plate by spline.
The outer of described driven friction disk is connected with slide key with the left shell of differential mechanism.
Described right bearing plate snaps between differential gear and differential right casing, is provided with pad at right bearing plate with between the differential gear on right bearing plate right side, and right bearing plate left side is provided with the second back-up ring that the right bearing plate of restriction moves; The second described back-up ring is fixed on spline housing left end outer surface.
Vehicle is in normal running process, the present invention only plays open differential " differential is poor turning round not " effect, when tyre slip, promote piston rod and then promote platen pressing friction sheet at pressure oil effect lower piston, bevel driven directly passes to semiaxis by power through differential carrier, and open differential is not worked.Compared with prior art, the present invention is simple in structure, easy to manufacture, can transmit when needed whole torques, makes two wheel forced synchronizing, can solve the characteristic adverse effect of open differential " differential is poor turning round not ", improves the passing ability of vehicle.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
In figure: 1, differential lock hub body; 1.1, first shaft shoulder; 1.2, hydraulic pressure oil duct; 1.3, sealing cavity volume; 2, bearing; 3, bearing shim; 4, piston packing I; 5, piston; 6, piston packing II; 7, piston rod; 7.1, second shaft shoulder; 8, dish spring; 9, the first back-up ring; 10, platen; 11, spline housing; 12, the left shell of differential mechanism; 13, left bearing plate; 14, bolt; 15, driven friction disk; 16, active friction plate; 17, bevel driven; 18, right bearing plate; 19, the second back-up ring; 20, pad; 21, straight pin; 22, bearing pin; 23, spherical pad; 24, bevel gear; 25, differential gear pad; 26, differential gear; 27, differential right casing.
Embodiment
Core of the present invention is to provide a kind of hydraulic type anti-skid no-spin lockup, and when its hydraulic type anti-skid auto-lock function lost efficacy the driving force of single wheel, opposite side wheel still can provide driving force, improves the passing ability of vehicle.Be below a specific embodiment of the present invention, existing the invention will be further described by reference to the accompanying drawings.
As shown in Figure 1, bevel driven 17 is linked together by bolt 14 with the left shell 12 of differential mechanism, differential right casing 27.Four bearing pins 22 are embedded in the circular hole of differential right casing 27, and are fixed by straight pin 21.Spherical pad 23, bevel gear 24 are enclosed within on bearing pin 22 successively, on spherical pad 23 external diameters, have projection, are placed in the groove of differential right casing 27 when installation, prevent that spherical pad 23 from rotating.Differential gear 26 is bored tooth with bevel gear 24 by straight-tooth and is connected, and is provided with differential gear pad 25 abrasionproofs between differential gear 26 and differential right casing 27.Under normal state, the power of bevel driven 17 passes to semiaxis through differential right casing 27, bearing pin 22, bevel gear 24, differential gear 26, and at this moment, anti-skidding auto-lock function is inoperative.
Differential lock hub body 1 is arranged on left half axle, and its medial extremity has first shaft shoulder 1.1, the first shaft shoulders 1.1 that extend vertically and is supported on the left shell 12 of differential mechanism by bearing 2.Between bearing 2 and differential lock hub body 1, have bearing shim 3, its thickness is used for adjusting bearing preload.
Between the left shell 12 of differential mechanism and left half axle, be provided with hollow slidably piston rod 7, piston rod 7 cooperations are arranged on left half axle, between the left shell 12 of piston rod 7 and differential mechanism, are provided with the dish spring 8 to piston rod 7 one left pressure; Piston rod 7 left ends are fixed with the piston 5 with 1 sliding connection of differential lock hub body, piston 5 closes cavity volume 1.3 with differential lock hub body 1 mineralization pressure oil sealing, the built-in hydraulic pressure oil duct 1.2 of differential lock hub body 1, hydraulic oil enters in sealing cavity volume by hydraulic pressure oil duct 1.2, promotes piston 5 and is shifted; Between piston 5 outer surfaces and differential lock hub body 1 inwall, be provided with piston packing I4 and piston packing II6, prevent the leakage of hydraulic oil; Between the left shell 12 of piston rod 7 and differential mechanism, be provided with the dish spring 8 to piston rod 7 one left pressure, piston rod 7 right-hand members are installed with platen 10, platen 10 is placed in the left shell 12 of differential mechanism, second shaft shoulder 7.1 of one side contacts piston rod 7, piston rod 7 promotes platen 10 by second shaft shoulder 7.1 and is shifted, platen 10 is fixing by the first back-up ring 9 that is enclosed within piston rod 7, after oil pressure disappears, with piston rod 7 returns.
Some active friction plates 16 and driven friction disk 15 are arranged at intervals in the inner volume of the left shell 12 of differential mechanism successively, and the internal tooth of active friction plate 16 is connected with spline housing 11 external spliness, and the outer of its driven friction disk 15 is connected with left shell 12 slide keys of differential mechanism.
Between friction plate 15,16 and differential right casing 27, be provided with right bearing plate 18, right bearing plate 18, by the second back-up ring 19 moving-limitings that are enclosed within on spline housing 11, is provided with pad 20 between right bearing plate 18 and differential gear 26.Spline housing 11 internal splines are connected with Formation of Axle Shaft Spline, are provided with left bearing plate 13 between friction plate and platen 10.
When wheel-slip or while getting down hopeless in a quagmire, hydraulic oil is entered by the hydraulic pressure oil duct 1.2 of differential lock hub body 1 in the sealing cavity volume 1.3 forming with piston 5, under oil pressure effect, piston 5 promote piston rod 7 overcome dish spring 8 elastic force occur axially displaced, piston rod 7 promotes platen 10 pressing friction sheets 15,16 by second shaft shoulder 7.1.The power that bevel driven 17 is transmitted is directly passed to left and right semiaxis through differential carrier 12,27, and differential mechanism does not play differential action, has played the effect of skidding of preventing.Cross and skid after muddy road surface, discharge after the hydraulic oil in sealing cavity volume 1.3, dish spring 8 makes platen 10 move to left with piston rod 7, separates with friction plate 15,16, and differential mechanism recovers differential function.
Claims (9)
1. a hydraulic type anti-skid no-spin lockup, the differential lock that comprises differential mechanism and coordinate with differential mechanism, described differential mechanism comprises the left shell of differential mechanism (12), differential right casing (27) and the bevel driven (17) that are connected as one by bolt (14), also comprises by straight pin (21) and bearing pin (22) and is fixed on bevel gear (24) and the differential gear (25) in differential mechanism;
It is characterized in that:
Described differential lock is hydraulic type differential lock, and it comprises the differential lock hub body (1) that is built-in with hydraulic pressure oil duct (1.2), and differential lock hub body (1) is sleeved on left half axle and is supported on the left shell of differential mechanism (12) by bearing (2);
Between the left shell of differential mechanism (12) and left half axle, be provided with hollow slidably piston rod (7), piston rod (7) cooperation is arranged on left half axle, is provided with the dish spring (8) that piston rod (7) is moved to the left between piston rod (7) and the left shell of differential mechanism (12); Described piston rod (7) left end is fixed with the piston (5) with differential lock hub body (1) sliding connection, between piston (5) and differential lock hub body (1), be provided with sealing cavity volume (1.3), sealing cavity volume (1.3) is communicated with described hydraulic pressure oil duct (1.2); Described piston rod (7) right-hand member is installed with platen (10);
On the left half axle of differential mechanism inner volume, be installed with spline housing (11); Described spline housing (11) is externally connected with active friction plate (16); Be arranged at intervals with successively driven friction disk (15) with described active friction plate (16), the outer of driven friction disk (15) is connected with the left shell of differential mechanism (12); Being describedly provided with right bearing plate (18) from, active friction plate (15,16) right side, left side is provided with left bearing plate (13); Described left bearing plate (13) left side is near described platen (10).
2. hydraulic type anti-skid no-spin lockup according to claim 1, it is characterized in that: between described bevel gear (24) and differential right casing (27), be provided with spherical pad (23), spherical pad (23) is enclosed within on bearing pin (22), on spherical pad (23) external diameter, have projection, differential right casing (27) is provided with the groove coordinating with spherical pad (23) projection.
3. hydraulic type anti-skid no-spin lockup according to claim 1, is characterized in that: between described differential gear (26) and differential right casing (27), have differential gear pad (25).
4. hydraulic type anti-skid no-spin lockup according to claim 1, it is characterized in that: described differential lock hub body (1) medial extremity is provided with first shaft shoulder (1.1) extending vertically, and first shaft shoulder (1.1) is supported on the left shell of differential mechanism (12) by bearing (2); Between bearing (2) and differential lock hub body (1), there is bearing shim (3).
5. hydraulic type anti-skid no-spin lockup according to claim 1, it is characterized in that: between described piston (5) left end outer surface and differential lock hub body (1) inwall, be provided with piston packing I(4), between piston (5) right-hand member outer surface and differential lock hub body (1) inwall, be provided with piston packing II(6).
6. hydraulic type anti-skid no-spin lockup according to claim 1, it is characterized in that: described piston rod (7) right-hand member is provided with second shaft shoulder (7.1), described platen (10) is sleeved on piston rod, platen (10) left surface is near second shaft shoulder (7.1), and platen (10) right flank is provided with the first back-up ring (9) that compresses platen (10); Described the first back-up ring (9) is fixed on the outer surface of piston rod (7).
7. hydraulic type anti-skid no-spin lockup according to claim 1, is characterized in that: described spline housing (11) internal surface is connected with left half axle by spline, and spline housing (11) outer surface is connected with the internal tooth of active friction plate (16) by spline.
8. hydraulic type anti-skid no-spin lockup according to claim 1, is characterized in that: the outer of described driven friction disk (15) is connected with slide key with the left shell of differential mechanism (12).
9. hydraulic type anti-skid no-spin lockup according to claim 1, it is characterized in that: described right bearing plate (18) snaps between differential gear (26) and differential right casing (27), at right bearing plate (18) be positioned between the differential gear (26) on right bearing plate (18) right side and be provided with pad (20), right bearing plate (18) left side is provided with mobile the second back-up ring (19) of the right bearing plate of restriction (18); Described the second back-up ring (19) is fixed on spline housing (11) left end outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410169988.4A CN103939570A (en) | 2014-04-25 | 2014-04-25 | Hydraulic antiskid self-locking differential mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410169988.4A CN103939570A (en) | 2014-04-25 | 2014-04-25 | Hydraulic antiskid self-locking differential mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN103939570A true CN103939570A (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410169988.4A Pending CN103939570A (en) | 2014-04-25 | 2014-04-25 | Hydraulic antiskid self-locking differential mechanism |
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| CN (1) | CN103939570A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385911A (en) * | 2014-11-24 | 2015-03-04 | 南京创捷和信汽车零部件有限公司 | Front steering drive axle for large tractor |
| CN105003619A (en) * | 2015-05-09 | 2015-10-28 | 陈学福 | Hydraulic driving meshing locking direct-connection-type differential mechanism |
| CN105003618A (en) * | 2015-05-09 | 2015-10-28 | 陈学福 | Hydraulic driving indirect friction locking differential mechanism |
| CN108621681A (en) * | 2018-05-14 | 2018-10-09 | 冯萍 | A kind of automobile device for lowering persons based on hydraulic stem control |
| CN110043583A (en) * | 2019-04-28 | 2019-07-23 | 浙江金道科技股份有限公司 | Drive axle and its brake assembly |
| CN110094478A (en) * | 2019-04-23 | 2019-08-06 | 徐州徐工传动科技有限公司 | A kind of engineering machinery differential lock differential mechanism |
| CN111043273A (en) * | 2019-11-19 | 2020-04-21 | 潍柴动力股份有限公司 | Differential mechanism, control method thereof and vehicle with differential mechanism |
| CN111788412A (en) * | 2018-08-16 | 2020-10-16 | 日立建机株式会社 | Vehicle axle device |
| CN113738845A (en) * | 2021-09-17 | 2021-12-03 | 山东临工工程机械有限公司 | Hydraulically controlled limited slip differential |
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| US4715248A (en) * | 1986-07-11 | 1987-12-29 | Gant Lawrence A | Manual differential lock-up |
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| CN102713358A (en) * | 2009-12-09 | 2012-10-03 | Zf腓德烈斯哈芬股份公司 | Motor vehicle transmission having a controllable differential |
| CN203098788U (en) * | 2013-02-02 | 2013-07-31 | 东风德纳车桥有限公司 | Differential mechanism anti-slipping gasket |
| CN203809638U (en) * | 2014-04-25 | 2014-09-03 | 徐工集团工程机械股份有限公司 | Hydraulic antiskid self-locking differential mechanism |
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2014
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Patent Citations (8)
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| US4715248A (en) * | 1986-07-11 | 1987-12-29 | Gant Lawrence A | Manual differential lock-up |
| JPS6383435A (en) * | 1986-09-24 | 1988-04-14 | Asano Haguruma Kosakusho:Kk | Differential gear with differential movement restriction mechanism |
| JPH04113931A (en) * | 1990-09-04 | 1992-04-15 | Hino Motors Ltd | Differential limiting device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385911A (en) * | 2014-11-24 | 2015-03-04 | 南京创捷和信汽车零部件有限公司 | Front steering drive axle for large tractor |
| CN104385911B (en) * | 2014-11-24 | 2017-03-15 | 南京创捷和信汽车零部件有限公司 | Large tractor front steering drive axle |
| CN105003619A (en) * | 2015-05-09 | 2015-10-28 | 陈学福 | Hydraulic driving meshing locking direct-connection-type differential mechanism |
| CN105003618A (en) * | 2015-05-09 | 2015-10-28 | 陈学福 | Hydraulic driving indirect friction locking differential mechanism |
| CN108621681A (en) * | 2018-05-14 | 2018-10-09 | 冯萍 | A kind of automobile device for lowering persons based on hydraulic stem control |
| CN111788412A (en) * | 2018-08-16 | 2020-10-16 | 日立建机株式会社 | Vehicle axle device |
| CN111788412B (en) * | 2018-08-16 | 2023-09-26 | 日立建机株式会社 | Axle device for vehicle |
| CN110094478A (en) * | 2019-04-23 | 2019-08-06 | 徐州徐工传动科技有限公司 | A kind of engineering machinery differential lock differential mechanism |
| CN110043583A (en) * | 2019-04-28 | 2019-07-23 | 浙江金道科技股份有限公司 | Drive axle and its brake assembly |
| CN110043583B (en) * | 2019-04-28 | 2024-05-24 | 浙江金道科技股份有限公司 | Driving axle and brake assembly thereof |
| CN111043273A (en) * | 2019-11-19 | 2020-04-21 | 潍柴动力股份有限公司 | Differential mechanism, control method thereof and vehicle with differential mechanism |
| CN113738845A (en) * | 2021-09-17 | 2021-12-03 | 山东临工工程机械有限公司 | Hydraulically controlled limited slip differential |
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Application publication date: 20140723 |
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