CN110094478A - A kind of engineering machinery differential lock differential mechanism - Google Patents
A kind of engineering machinery differential lock differential mechanism Download PDFInfo
- Publication number
- CN110094478A CN110094478A CN201910326327.0A CN201910326327A CN110094478A CN 110094478 A CN110094478 A CN 110094478A CN 201910326327 A CN201910326327 A CN 201910326327A CN 110094478 A CN110094478 A CN 110094478A
- Authority
- CN
- China
- Prior art keywords
- differential mechanism
- platen
- transition sleeve
- end cap
- friction plate
- 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
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 53
- 230000007704 transition Effects 0.000 claims abstract description 60
- 239000003921 oil Substances 0.000 claims description 13
- 230000004323 axial length Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000010720 hydraulic oil Substances 0.000 claims description 5
- 230000037452 priming Effects 0.000 claims description 3
- 230000035939 shock Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a kind of engineering machinery differential lock differential mechanism, including spline housing, platen, friction plate group, transition sleeve, return spring assembly, end cap and the piston that is axially movable being located on the one of semiaxis of differential mechanism；Spline housing inner surface can be meshed with semiaxis, and outer surface can be meshed with friction plate group；End cap is set on the outside of platen, and end cap is fixedly connected with differential mechanism shell；The center of end cap has an inner hole for accommodating semiaxis and transition sleeve；One end face of transition sleeve is adjacent with platen, and other end can be pushed by piston and is axially moved along semiaxis；There are multiple stepped holes for installing return spring assembly, corresponding position is respectively provided with through-hole on the platen and transition sleeve of the axial direction of stepped hole on end cap.This programme is ingenious to utilize housing cavity space, is laid out part, compact-sized；It is engaged by friction plate group with spline housing, rigid shock when avoiding locking.So that transition sleeve and bar is driven platen and friction plate quick separating by reset spring, realizes quick release.
Description
Technical field
The present invention relates to a kind of engineering machinery differential lock differential mechanisms, belong to loading machine technical field.
Background technique
Differential mechanism is housed in the drive axle of loading machine, it can permit left and right sides wheel and is rotated with friction speed, but
When wherein single wheel dallies, wheel of the other side in good road surface also cannot get torque, and loading machine just loses traveling
Power.In this case differential mechanism is ineffective.In order to improve handling capacity of the loading machine on the road surface for being easy to skid, need
Differential mechanism is locked, drive axle two sides wheel can be made to become being rigidly connected, most of torque even all torsion torque can be passed
To the wheel not trackslipped, so that so that machine is generated enough tractive force can continue to travel.
Summary of the invention
For problem described above, the present invention provides a kind of engineering machinery differential lock differential mechanism, is beaten by wet braking
Sliding side axle shaft gear makes driving torque reassign to the other side, and another side wheel side obtains power, to enable the machine to continue
Traveling.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of engineering machinery differential lock differential mechanism, including spline housing, the platen, friction plate being located on the one of semiaxis of differential mechanism
The piston that group, transition sleeve, return spring assembly, end cap and one are axially movable；
Spline housing inner surface has the internal spline that can be meshed with the external splines of semiaxis outer surface, and spline housing outer surface has can be with
The external splines that friction plate group is meshed；
Spline housing, friction plate group are surrounded wherein by the space between platen and differential mechanism shell；End cap, end cap are set on the outside of platen
It is fixedly connected with differential mechanism shell；The center of end cap has an inner hole that can accommodate semiaxis and transition sleeve；
One of end face of transition sleeve is adjacent with platen, and other end can be pushed by piston and is axially moved along semiaxis；
There is multiple stepped holes for installing return spring assembly, the platen and transition sleeve of the axial direction of stepped hole on end cap
Upper corresponding position is respectively provided with through-hole；
Return spring assembly includes bar and covers the reset spring on bar, and the both ends of bar are each passed through platen and the same axis of transition sleeve
Upward through-hole, and be limited in the space between platen and friction plate group by limiting section respectively and the space of transition sleeve and piston space
In.
Further, return spring assembly remains that transition sleeve is fitted closely with thrust bearing.Return spring assembly begins
Platen is kept to fit closely with transition sleeve eventually.
Further, friction plate group includes spaced driven disc and friction plate；
Further, being in contact with differential mechanism shell is driven disc, and being in contact with platen side end face is friction plate.
Further, it is connected between the transition sleeve other end and piston by thrust bearing.One end face of thrust bearing
Always it is bonded with piston end surface, other end is bonded with transition sleeve end face always.
Further, the piston is hermetically mounted in shell by piston oil seal.
Further, hydraulic oil is entered in the gap between piston and shell by the oil duct being arranged on shell.
Further, oil groove is provided on the transition sleeve.
Further, a bearing is respectively set on end cap and differential mechanism shell, support differential mechanism rotates under power effect.
Further, a thrust bearing is set between piston and transition sleeve, and axial gap 0 can guarantee piston essence
Quasi- impulse stroke.Meet transition sleeve simultaneously as differential casing rotates demand.
Further, differential mechanism left housing is fixed as one with after differential right casing pairing by connector, interior space dress
There are cross axle, planetary gear and axle shaft gear.
Further, there is following size relationship between transition sleeve and end cap, platen:
L >=L1+ piston priming stroke,
In formula, L is the axis between the face being in contact on the identity distance transition sleeve towards end cap on transition sleeve where through-hole with platen
To length dimension；L1 is the axial length dimension of the stepped hole on end cap.
Advantageous effects of the invention:
Hydraulic oil enters promotion piston by the oil duct opened on shell, pushes thrust bearing, transition sleeve, platen, pressure by piston
Friction-tight piece, to make spline housing and axle shaft gear stop operating, so that other side axle shaft gear be made to obtain torque.Ingenious utilization
Housing cavity space is laid out part, compact-sized.It is engaged by driven disc 12 and friction plate 11 with spline housing, when avoiding locking
Rigid shock.So that transition sleeve and bar is driven platen and friction plate quick separating by reset spring, realizes quick release.Using pushing away
Power bearing can effectively transmit the axial displacement of piston and assist the rotation needs of differential mechanism.
Detailed description of the invention
Fig. 1 is a kind of engineering machinery differential lock differential mechanism diagrammatic cross-section of the invention.
Fig. 2 is the diagrammatic cross-section of return spring assembly in a kind of engineering machinery differential lock differential mechanism of the invention.
Fig. 3 is the schematic diagram of the bar in a kind of engineering machinery differential lock differential mechanism of the invention.
Fig. 4 is the transition sleeve schematic diagram in a kind of engineering machinery differential lock differential mechanism of the invention.
Fig. 5 is the end cap schematic diagram in a kind of engineering machinery differential lock differential mechanism of the invention.
Fig. 6 is transition sleeve, transition sleeve size relationship schematic diagram in a kind of engineering machinery differential lock differential mechanism of the invention.
In figure: 1, shell, 2, piston oil seal, 3, piston, 4, thrust bearing, 5, transition sleeve, 6, bolt II, 7, bearing I,
8, return spring assembly, 9, end cap, 10, platen, 11, friction plate, 12, driven disc, 13 spline housings, 14, differential mechanism left housing, 15,
Cross axle, 16, planetary gear, 17, planetary gear gasket, 18, bolt I, 19, axle shaft gear, 20, axle shaft gear gasket, 21, differential mechanism
Right shell, 22, bearing I I, 23, inner hole, 24, stepped hole, 25, Flange Plane, 26, reset spring, 27, bar, 28, split pin, 29,
Through-hole.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Fig. 1 to Fig. 4, a kind of engineering machinery differential lock differential mechanism of the invention, including it is located at differential mechanism wherein one
Spline housing 13, platen 10, friction plate 11, driven disc 12, transition sleeve 5, return spring assembly 8 and end cap 9 on a semiaxis.
Differential mechanism left housing 14 is fixed as one with after 21 pairing of differential right casing by bolt I 18, and interior space is equipped with ten
Word axis 15, planetary gear 16, planetary gear gasket 17, axle shaft gear 19, axle shaft gear gasket 20.Half be arranged in differential mechanism left housing 14
On axis, it is arranged a spline housing 13 that can be meshed with the external splines on semiaxis, 13 outer surface of spline housing has external splines.
Driven disc 12 and friction plate 11 that interval is assemblied in external splines gap, 12 He of driven disc are arranged outside spline housing 13
Friction plate 11 is surrounded wherein by the space between platen 10 and differential mechanism left housing 14.Wherein, with 14 outer end face phase of differential mechanism left housing
Contact is driven disc 12, and being in contact with 10 side end face of platen is driven disc 12.Driven disc 12 and the assembly of the interval of friction plate 11,
7 driven discs, 6 friction plates are equipped in the present embodiment altogether, rigid shock when avoiding locking.Platen 10 is arranged in end cap 9
Portion, end cap 9 are linked together by bolt II6 with differential mechanism left housing 14, driven disc 12 and friction plate 11, spline housing 13, platen
10 are limited in the space formed between end cap 9 and differential mechanism left housing 14.The center of end cap 9 has an inner hole 23, makes end cap
Axis thereon is not arranged with it to be in contact.Transition sleeve 5 is in end cap inner hole 23, one end close neighbour platen 10, other end
Close neighbour's thrust bearing 4 may be axially movable transition sleeve 5, radial to be limited by 9 inner hole 23 of end cap.4 axial gap of thrust bearing begins
Eventually it is 0, can guarantee the accurate impulse stroke of piston 3.Meet transition sleeve 5 simultaneously as differential casing rotates demand.
With multiple for installing the stepped hole 24 of return spring assembly 8, axial direction side corresponding with stepped hole 24 on end cap 9
To platen 10 and transition sleeve 5 on be correspondingly arranged through-hole.Every set return spring assembly 8 includes bar 27, covers answering on bar 27
Position spring 26, split pin 28, one end of bar 27 have a Flange Plane 25, the other end be provided with can fitting opening pin 28 small through hole.
Split pin 28 and Flange Plane 25 be for alloing the both ends of bar 27 be defined do not depart from it is logical on transition sleeve 5 and platen 10
Hole 29, in other embodiments, split pin 28 and Flange Plane 25 can also using the limiting section of other structures or component come
Instead of.
Bar 27 passes through corresponding through-hole 29 on stepped hole and platen 10 and transition sleeve 5 in end cap 9, makes with Flange Plane
In space between platen 10 and friction plate 11, the other end with small through hole passes through the hole on transition sleeve 5 for 25 one end
It is fixed by split pin 28.The reset spring 26 being arranged on bar 27 can be compressed in stepped hole by transition sleeve 5, and in transition sleeve 5
Transition sleeve 5 pushes platen 10 to move to friction plate 11 when compression reseting spring 26 moves, or will by the restoring force of reset spring 26
Transition sleeve 5 pops up outward, and the card of Flange Plane 25 that transition sleeve 5 is further driven on bar 27 drags platen 10 to far from friction plate 11
Direction movement, make platen 10 and 11 quick separating of friction plate.
Bearing I 7 and bearing I I 22 are attached separately to the both ends of end cap 9 and differential right casing 21, support differential mechanism in power
The lower rotation of effect.3 both ends of piston are equipped with piston oil seal 2, are hermetically mounted in shell 1 by piston oil seal 2.In piston 3 and mistake
It crosses between set 5 equipped with thrust bearing 4, relatively rotates transition sleeve 5 with piston 3.Use thrust bearing 4, axial gap
It is 0, guarantees accurate 3 impulse stroke of piston.
In conjunction with shown in Fig. 5 and Fig. 6, transition sleeve 5 and end cap 9, platen 10 have following size relationship:
L >=L1+ piston priming stroke,
In formula, L is the identity distance towards end cap where the through-hole 29 on transition sleeve 5 from being in contact on transition sleeve 5 with platen 10
Axial length dimension between face；L1 is the axial length dimension of the stepped hole 24 on end cap 9.
It is provided with oil groove in the outer circle of transition sleeve 5, is lubricated conducive to oil film is generated during the motion.
When having skidded, hydraulic oil is entered by 1 oil duct of shell, pushes piston 3.Piston 3 is pushed by thrust bearing 4
Transition sleeve 5, transition sleeve 5 push platen 10 to compress driven disc 12 and friction plate 11.Due on spline housing 13 external splines and friction
Piece 11 is meshed, and internal spline is meshed with the external splines on semiaxis, and when 11 stress of friction plate, spline housing 13 and semiaxis are limited,
Left and right half gear no longer differential, becomes being rigidly connected, and is achieved in differential locking.
When releasing is locked, hydraulic oil carries out emptying, and piston 3 loses thrust, and transition sleeve 5 is returned reset spring 26
The multiple lower pop-up outward of power effect is separated with platen 10, so that platen 10 is no longer pressed to friction plate 11, transition sleeve 5 is further driven to bar 27
On Flange Plane 271 block and drag platen 10 and move to far from the direction of friction plate 11, divide platen 10 and friction plate 11 quickly
From.Friction plate 11 is no longer engaged with the external splines on spline housing 13, and spline housing 13 lifts restrictions with semiaxis, left and right half gear
Realize unlock.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of engineering machinery differential lock differential mechanism, characterized in that including be located on the one of semiaxis of differential mechanism spline housing,
The piston that platen, friction plate group, transition sleeve, return spring assembly, end cap and one are axially movable；
Spline housing inner surface has the internal spline that can be meshed with the external splines of semiaxis outer surface, and spline housing outer surface has can be with
The external splines that friction plate group is meshed；
Spline housing, friction plate group are surrounded wherein by the space between platen and differential mechanism shell；End cap, end cap are set on the outside of platen
It is fixedly connected with differential mechanism shell；The center of end cap has an inner hole that can accommodate semiaxis and transition sleeve；
One of end face of transition sleeve is adjacent with platen, and other end can be pushed by piston and is axially moved along semiaxis；
There is multiple stepped holes for installing return spring assembly, the platen and transition sleeve of the axial direction of stepped hole on end cap
Upper corresponding position is respectively provided with through-hole；
Return spring assembly includes bar and covers the reset spring on bar, and the both ends of bar are each passed through platen and the same axis of transition sleeve
Upward through-hole, and be limited in the space between platen and friction plate group by limiting section respectively and the space of transition sleeve and piston space
In.
2. engineering machinery differential lock differential mechanism according to claim 1, characterized in that friction plate group includes spaced
Driven disc and friction plate.
3. engineering machinery differential lock differential mechanism according to claim 2, characterized in that driven disc and friction plate interval are arranged
Column, being in contact with differential mechanism shell is driven disc, and being in contact with platen side end face is driven disc.
4. engineering machinery differential lock differential mechanism according to claim 1, characterized in that the transition sleeve other end and work
Thrust bearing is set between plug.
5. engineering machinery differential lock differential mechanism according to claim 1, characterized in that the piston is sealed by piston oil
Feud is in shell.
6. engineering machinery differential lock differential mechanism according to claim 1, characterized in that hydraulic oil is by being arranged on shell
Oil duct enters in the gap between piston and shell.
7. engineering machinery differential lock differential mechanism according to claim 1, characterized in that be provided with oil groove on the transition sleeve.
8. engineering machinery differential lock differential mechanism according to claim 1, characterized in that on end cap and differential mechanism shell respectively
One bearing is set, and support differential mechanism rotates under power effect.
9. engineering machinery differential lock differential mechanism according to claim 1, characterized in that differential mechanism left housing and differential right casing
It is fixed as one after pairing by connector, interior space is equipped with cross axle, planetary gear and axle shaft gear.
10. engineering machinery differential lock differential mechanism according to claim 1, characterized in that between transition sleeve and end cap, platen
With following size relationship:
L >=L1+ piston priming stroke,
In formula, L is on the identity distance transition sleeve towards end cap where the through-hole on transition sleeve between the face that is in contact with platen
Axial length dimension；L1 is the axial length dimension of the stepped hole on end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910326327.0A CN110094478A (en) | 2019-04-23 | 2019-04-23 | A kind of engineering machinery differential lock differential mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910326327.0A CN110094478A (en) | 2019-04-23 | 2019-04-23 | A kind of engineering machinery differential lock differential mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110094478A true CN110094478A (en) | 2019-08-06 |
Family
ID=67445514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910326327.0A Pending CN110094478A (en) | 2019-04-23 | 2019-04-23 | A kind of engineering machinery differential lock differential mechanism |
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| Country | Link |
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| CN (1) | CN110094478A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6168545B1 (en) * | 1999-05-26 | 2001-01-02 | Mclaren Automotive Group, Inc. | Limited slip differential with spring-loaded clutches |
| CN202100678U (en) * | 2011-06-03 | 2012-01-04 | 湘潭电机股份有限公司 | Forced locking differential mechanism |
| CN103939570A (en) * | 2014-04-25 | 2014-07-23 | 徐工集团工程机械股份有限公司 | Hydraulic antiskid self-locking differential mechanism |
| JP2015206394A (en) * | 2014-04-18 | 2015-11-19 | 株式会社ジェイテクト | Differential apparatus for vehicle |
| CN105240484A (en) * | 2015-10-14 | 2016-01-13 | 温岭市华鑫机械制造有限公司 | Electronic control multi-plate-type self-locking drive axle |
| CN105416045A (en) * | 2015-12-14 | 2016-03-23 | 徐州徐工传动科技有限公司 | Wheel edge with braking and torque transmission functions and drive axle with wheel edge |
| CN208487171U (en) * | 2018-04-09 | 2019-02-12 | 徐州美驰车桥有限公司 | Rub chip inter-wheel differential lockable mechanism more |
| CN208734834U (en) * | 2018-07-27 | 2019-04-12 | 徐州美驰车桥有限公司 | Hydraulic Lock differential design |
| CN210034328U (en) * | 2019-04-23 | 2020-02-07 | 徐州徐工传动科技有限公司 | Differential mechanism of differential lock of engineering machinery |
-
2019
- 2019-04-23 CN CN201910326327.0A patent/CN110094478A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6168545B1 (en) * | 1999-05-26 | 2001-01-02 | Mclaren Automotive Group, Inc. | Limited slip differential with spring-loaded clutches |
| CN202100678U (en) * | 2011-06-03 | 2012-01-04 | 湘潭电机股份有限公司 | Forced locking differential mechanism |
| JP2015206394A (en) * | 2014-04-18 | 2015-11-19 | 株式会社ジェイテクト | Differential apparatus for vehicle |
| CN103939570A (en) * | 2014-04-25 | 2014-07-23 | 徐工集团工程机械股份有限公司 | Hydraulic antiskid self-locking differential mechanism |
| CN105240484A (en) * | 2015-10-14 | 2016-01-13 | 温岭市华鑫机械制造有限公司 | Electronic control multi-plate-type self-locking drive axle |
| CN105416045A (en) * | 2015-12-14 | 2016-03-23 | 徐州徐工传动科技有限公司 | Wheel edge with braking and torque transmission functions and drive axle with wheel edge |
| CN208487171U (en) * | 2018-04-09 | 2019-02-12 | 徐州美驰车桥有限公司 | Rub chip inter-wheel differential lockable mechanism more |
| CN208734834U (en) * | 2018-07-27 | 2019-04-12 | 徐州美驰车桥有限公司 | Hydraulic Lock differential design |
| CN210034328U (en) * | 2019-04-23 | 2020-02-07 | 徐州徐工传动科技有限公司 | Differential mechanism of differential lock of engineering machinery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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