CN103807405A - Helical tooth limited slip differential with automatic locking function - Google Patents
Helical tooth limited slip differential with automatic locking function Download PDFInfo
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- CN103807405A CN103807405A CN201410078917.3A CN201410078917A CN103807405A CN 103807405 A CN103807405 A CN 103807405A CN 201410078917 A CN201410078917 A CN 201410078917A CN 103807405 A CN103807405 A CN 103807405A
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- centrifugal
- housing
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- end cap
- helical tooth
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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
- F16H48/22—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
- F16H48/06—Differential gearings with gears having orbital motion
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- General Engineering & Computer Science (AREA)
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Abstract
The invention relates to a helical tooth limited slip differential with an automatic locking function, which comprises a shell. A left half axle gear and a right half axle gear are laterally symmetrically arranged in the shell; the left half axle gear and the right half axle gear are respectively meshed with planetary gears; the shell is provided with a locking device. The helical tooth limited slip differential with the automatic locking function, which is disclosed by the invention, makes up the defect that a locking differential is equivalent to a common open differential under the nonlimiting condition and cannot limit sliding of wheels. A helical tooth limited slip functional part of the helical tooth limited slip differential can automatically work, does not need to be artificially interfered and transfers the torque in real time, can well inhibit the wheels from sliding on ice and snow, muddy, sloppy and gravel pavements and ensures that a vehicle safely runs. The differential also has a function of locking the wheels in the limit state that the wheels at one side of the vehicle are suspended in the air and completely lose the adhesive force.
Description
Technical field
The present invention relates to a kind of auto parts and components, specifically, relate to a kind of helical tooth limited-slip differential with automatic locking function.
Background technique
When Vehicle Driving Cycle, left and right wheels at one time in, the stroke of rolling is often not identical, be that both sides wheel exists speed discrepancy, especially Ackermann steer angle, both sides vehicle wheel rotational speed is poor more obvious, differential mechanism is applied on various vehicles, and object allows both sides vehicle wheel rotational speed inconsistent exactly.
The common open type differential mechanism generally using now, mainly formed by housing, planet pin, planetary pinion, differential gear, differential gear is by semiaxis and drive wheel to connect, while travelling on good road surface, its performance can meet Vehicle Driving Cycle requirement completely, but in the time that Vehicle Driving Cycle is on bad road surface, especially on ice and snow, muddy, wet and slippery, gravel, rugged severe road surface, the adhesion of both sides wheel there will be very large difference, the side that often adhesion is little there will be skids, dallies, cause vehicle not travel, even occur that whipping is out of control.The part vehicle of some auto vendors at present, choosing has filled the locking differential of import, although it is unsettled to have solved vehicle single wheel, thoroughly lose under the limit case of adhesion, the problem of Vehicle Driving Cycle, but can not solve under non-limit case, this differential mechanism is equal to common open type differential mechanism, there will be slippage, transmission efficiency is not high, even whipping problem out of control.
Summary of the invention
For above-mentioned deficiency of the prior art, the invention provides a kind of helical tooth limited-slip differential with automatic locking function that prevents wheel-slip, idle running.
The technical solution used in the present invention is:
A helical tooth limited-slip differential with automatic locking function, comprises housing, is symmetrically set with left half axle gear and right axle shaft gear in housing; Left half axle gear with
threeleft planetary pinion engagement; Three left planetary pinions are arranged in three left side planet gear holes of housing left side and housing shaft line parallel; Right axle shaft gear engages with three right planetary pinions; Three right planetary pinions are arranged in the planetary pinion hole, three right sides of housing right side and housing shaft line parallel; Three left planetary pinions engage between two with three right planetary pinions respectively, and housing is provided with Locking Device.
Described Locking Device comprises the connecting plate and the right end cap that are arranged on housing right-hand member outside; In the cavity that connecting plate and right end cap form, be provided with the right axle shaft gear extended end with external splines, on right axle shaft gear extended end, be provided with the cam ring with internal spline, cam ring its right end face arranges three cam ring spirality projections; The right side of cam ring is provided with external cam, and external cam left side is provided with three external cam spirality projections; Cam ring spirality projection matches with external cam spirality projection; External cam inner hole sleeve is contained on the cylindrical of cam ring right side.
The right side of external cam is provided with locking friction plate assembly, and locking friction plate assembly comprises internal toothed friction plate with internal spline and the external tooth friction plate with outer process; Described internal toothed friction plate and external tooth friction plate are arranged alternately; Described internal toothed friction plate and external tooth friction plate match with the extended end of right axle shaft gear and the internal recess of right end cap respectively, and right end cap is fitted on connecting plate.
Described surface of shell is along housing shaft to being provided with locking trigger mechanism and locking cancel system.
Described trigger mechanism comprises centrifugal gear shaft, and is arranged on upper centrifugal-block and lower centrifugal-block on centrifugal gear shaft, and upper centrifugal-block and lower centrifugal-block both sides are provided with left centrifugal end cap and right centrifugal end cap; Inside left centrifugal end cap and right centrifugal end cap, on centrifugal gear shaft, be set with Compress Spring; Left end cap is connected by pin with lower centrifugal-block with right end cap and upper centrifugal-block; Pin middle part is set with the torsion spring for limiting upper centrifugal-block and lower centrifugal-block position; Described locking cancel system comprises removing to get rid of piece axle and be sleeved on to remove and gets rid of releasing on piece axle and get rid of piece and get rid of piece torsion spring.
Described centrifugal gear shaft left end is arranged in the supported hole of housing left side, and centrifugal gear shaft right-hand member is arranged in the supported hole of right end cap right side.
The centrifugal end cap in a described left side and right centrifugal end cap are provided with cone shape hole, and cone shape hole coordinates with the tapered portion being fitted on cover of wedge and the centrifugal gear shaft on gear shaft respectively.
Described releasing is got rid of piece axle and is parallel to centrifugal gear shaft; Releasing is got rid of piece axle left end and is arranged in housing left positioner hole, and right-hand member is arranged in housing right-hand member positioning hole.
The beneficial effect of the relative prior art of the present invention:
The present invention has the helical tooth limited-slip differential of automatic locking function, has made up locking differential and under non-limit case, has been equal to common open type differential mechanism, the shortcoming of can not limiting wheel sliding.The sliding funtion part of its helical tooth limit, energy automatic operation, without human intervention, shifts moment of torsion in real time, in ice and snow, muddy, wet and slippery, road surfaces, can well suppress wheel and slide, and guarantees vehicle safe driving.This differential mechanism has also possessed at vehicle single wheel unsettled, thoroughly loses under the ultimate state of adhesion the function of locking wheel.
Accompanying drawing explanation
Fig. 1 is the helical tooth limited-slip differential decomposition texture schematic diagram that the present invention has automatic locking function;
Fig. 2 is the housing left side perspective view of the present invention's helical tooth limited-slip differential with automatic locking function;
Fig. 3 is the housing right side perspective view of the present invention's helical tooth limited-slip differential with automatic locking function;
Fig. 4 is that the present invention has the perspective view that piece is got rid of in the releasing of the helical tooth limited-slip differential of automatic locking function;
Fig. 5 is the locking trigger mechanism of the present invention's helical tooth limited-slip differential with automatic locking function and locking cancel system in the structural representation of lockup state not;
Fig. 6 is the structural representation of the present invention's locking trigger mechanism of helical tooth limited-slip differential with automatic locking function and the centrifugal-block of the locking cancel system locking cancel system while being rotated counterclockwise in lockup state;
Fig. 7 is the structural representation of the present invention's locking trigger mechanism of helical tooth limited-slip differential with automatic locking function and the centrifugal-block of the locking cancel system locking cancel system while turning clockwise in lockup state;
Fig. 8 is the local enlarged diagram of Fig. 1.
Critical piece symbol description in accompanying drawing:
In figure:
1, housing 2, connecting plate
3, left end cap 4, left half axle gear
5, right axle shaft gear 6, left planetary pinion
7, right planetary pinion 8, cam ring
9, external cam 10, internal toothed friction plate
11, light face friction plate 12, external tooth friction plate
13, centrifugal end cap 14, centrifugal-block
15, torsion spring 16, centrifugal gear shaft
17, pin 18, cover of wedge
19, piece is got rid of in Compress Spring 20, releasing
21, get rid of piece torsion spring 22, remove and get rid of piece axle
23, E type back-up ring 24, right end cap
25, Corrugation pad 26, bolt
27, left side planet gear hole 28, planetary pinion hole, right side.
Embodiment
Referring to drawings and Examples, the present invention will be described in detail:
Accompanying drawing 1 to 7 is known, and a kind of helical tooth limited-slip differential with automatic locking function, comprises housing 1, is symmetrically set with left half axle gear 4 and right axle shaft gear 5 in housing 1; Left half axle gear 4 with
threeleft planetary pinion 6 engages; Three left planetary pinions 6 are arranged in three left side planet gear holes 27 of housing 1 left side and housing shaft line parallel; Right axle shaft gear 5 engages with three right planetary pinions 7; Three right planetary pinions 7 are arranged in the planetary pinion hole, three right sides 28 of housing 1 right side and housing shaft line parallel; Three left planetary pinions 6 engage between two with three right planetary pinions 7 respectively, and housing 1 is provided with Locking Device.
Described Locking Device comprises the connecting plate 2 and the right end cap 24 that are arranged on housing 1 right-hand member outside; In the cavity that connecting plate 2 and right end cap 24 form, be provided with right axle shaft gear 5 extended ends with external splines, be provided with the cam ring 8 with internal spline on right axle shaft gear 5 extended ends, cam ring 8 its right end face arrange three cam ring spirality projections; The right side of cam ring is provided with external cam 9, and external cam 9 left sides are provided with three external cam spirality projections; Cam ring 8 spirality projections match with external cam 9 spirality projections; External cam 9 inner hole sleeves are contained on cam ring 8 right side cylindricals.
The right side of external cam 9 is provided with locking friction plate assembly, and locking friction plate assembly comprises internal toothed friction plate with internal spline 10 and the external tooth friction plate 12 with outer process; Described internal toothed friction plate 10 and external tooth friction plate 12 are arranged alternately; Described internal toothed friction plate 10 and external tooth friction plate 12 match with the extended end of right axle shaft gear 5 and the internal recess of right end cap 24 respectively, and right end cap 24 is fitted on connecting plate 2.
Described housing 1 surface is along housing shaft to being provided with locking trigger mechanism and locking cancel system.
Described trigger mechanism comprises centrifugal gear shaft 16, and is arranged on upper centrifugal-block 14 and lower centrifugal-block 14 on centrifugal gear shaft 16, and upper centrifugal-block 14 and lower centrifugal-block 14 both sides are provided with left centrifugal end cap 13 and right centrifugal end cap 13; On left centrifugal end cap 13 and the right centrifugal end cap 13 centrifugal gear shafts 16 in inner side, be set with Compress Spring 19; Left centrifugal end cap 13 is connected by pin 17 with lower centrifugal-block 14 with right centrifugal end cap 13 and upper centrifugal-block 14; Pin 17 middle parts are set with the torsion spring 15 for limiting upper centrifugal-block 14 and lower centrifugal-block 14 positions; Described locking cancel system comprises removing to get rid of piece axle 22 and be sleeved on to remove and gets rid of releasing on piece axle 22 and get rid of piece 20 and get rid of piece torsion spring 21.
Described centrifugal gear shaft 16 left ends are arranged in housing 1 left side supported hole, and centrifugal gear shaft 16 right-hand members are arranged in the supported hole of right end cap right side.
The centrifugal end cap 13 in a described left side and right centrifugal end cap 13 are provided with cone shape hole, and cone shape hole coordinates with the tapered portion being fitted on cover of wedge 18 and the centrifugal gear shaft 16 on gear shaft respectively.
Described releasing is got rid of piece axle 22 and is parallel to centrifugal gear shaft 16; Releasing is got rid of piece axle 22 left ends and is arranged in housing 1 left positioner hole, and right-hand member is arranged in housing 1 right-hand member positioning hole.
The present invention has the helical tooth limited-slip differential of automatic locking function, has made up locking differential and under non-limit case, has been equal to common open type differential mechanism, the shortcoming of can not limiting wheel sliding.The sliding funtion part of its helical tooth limit, energy automatic operation, without human intervention, shifts moment of torsion in real time, in ice and snow, muddy, wet and slippery, road surfaces, can well suppress wheel and slide, and guarantees vehicle safe driving.This differential mechanism has also possessed at vehicle single wheel unsettled, thoroughly loses under the ultimate state of adhesion the function of locking wheel.
The present invention has the helical tooth limited-slip differential structural configuration explanation of automatic locking function:
This differential mechanism is by left end cap, housing and connecting plate form the sliding functional zone of helical tooth limit in left side, inside, functional zone, prolong housing central axis, left half axle gear and right axle shaft gear are symmetrically arranged, three left planetary pinions are around left half axle gear, be disposed in three of housing left side with the planetary pinion hole of housing shaft line parallel in, and engage with left half axle gear, three right planetary pinions are around right axle shaft gear, be disposed in three of housing right side with the planetary pinion hole of housing shaft line parallel in, and engage with right axle shaft gear, three left planetary pinions and three right planetary pinion half that length of action is axial dimension between two simultaneously.
This differential mechanism forms latch functions district by connecting plate and right end cap, in the cavity that functional zone form, be furnished with the extended end of the right axle shaft gear with external splines, cam ring with internal spline is housed on extended end, cam ring can slide on right axle shaft gear extended end, three spirality projections of cam ring its right end face distribution, three spiralitys spirality projection protruding and cam ring right side in external cam left side matches, external cam inner hole sleeve is on the small end cylindrical of cam ring right side, external cam can horizontally slip on cam ring, locking friction plate assembly comprises internal toothed friction plate with internal spline and the external tooth friction plate with outer process, alternately be arranged in the right side of external cam, coordinate with the extended end of right axle shaft gear and the internal recess of right end cap respectively, right end cap is pressed on connecting plate, carry out fastening with bolt and housing.
Housing middle part is provided with the groove that holds locking trigger mechanism and locking cancel system.
The locking trigger mechanism of this differential mechanism and locking cancel system, axial arranged along housing, run through two functional zone, trigger mechanism comprises centrifugal gear shaft, upper and lower two centrifugal-blocks, two of left and right centrifugal mechanism end cap and Compress Spring, torsion spring and rivet.Centrifugal gear shaft left end is supported in the aperture in housing left side, and right-hand member is supported in the aperture on right end cap right side, and can freely rotate.
At the middle part of centrifugal gear shaft, between two the centrifugal mechanism end caps in left and right, a Compress Spring being enclosed within on gear shaft is housed, upper and lower two centrifugal-blocks are also installed between two the centrifugal mechanism end caps in left and right, symmetry is embraced Compress Spring, and by two of left and right centrifugal mechanism end cap, pin and torsion spring clamping.Two the centrifugal end caps in left and right all have cone-shaped inner hole, coordinate with the tapering part being fitted on cover of wedge and the gear shaft on gear shaft respectively, by Compress Spring, two centrifugal end caps are held out against on the conical surface coordinating separately, centrifugal mechanism is fixed with centrifugal gear shaft, and can rotate together with centrifugal gear shaft, after when high speed rotating, upper and lower two centrifugal-blocks overcome torsion spring elastic force, can open.The gear on centrifugal gear shaft right side is meshed with the gear of external cam cylindrical.
Locking cancel system comprises that piece axle is got rid of in releasing, releasing is got rid of piece and got rid of piece torsion spring.Releasing is got rid of piece axle and is parallel to centrifugal gear shaft layout, left end is supported in the aperture in housing left side, right-hand member is supported in the aperture of housing right-hand member, middle installation is removed and is got rid of piece and torsion spring, when housing static state and the slow-speed of revolution, torsion spring presses to housing center getting rid of piece, when housing rotating speed reaches setting value, get rid of piece centrifugal force and overcome torsion spring elastic force, can radially throw away certain distance along housing.
The present invention has the helical tooth limited-slip differential working principle of automatic locking function:
One, vehicle straight-line travelling:
The moving housing 1 of back axle basin cingulum rotates, three left planetary pinions 6 and three right planetary pinions 7 in housing 1 revolve round the sun in company with housing 1, without rotation, drive so respectively left half axle gear 4 and right axle shaft gear 5 to rotate with differential casing 1, drive vehicle advance or retreat.
Two, turn inside diameter:
1, turn left: right axle shaft gear 5 rotating speeds exceed housing 1, three right planetary pinions 7 that engage with right axle shaft gear 5, in revolving round the sun with housing 1, there is reverse rotation, drive three left planetary pinions 6 that engage between two with it in revolving round the sun in company with housing 1, produce forward rotation, the rotation of their forwards causes left half axle gear 4 rotating speeds lower than differential casing 1, thereby realizes the turning of vehicle.
2, turn right: situation is identical with left-hand bend, and above-mentioned left and right gear is exchanged.
3, reversing is turned: identical with above-mentioned two situations, housing 1 and each gear sense of rotation are exchanged.
The helical tooth limited-slip differential that the present invention has automatic locking function has driving and the differential function the same with common open type differential mechanism.
Three, the sliding function of limit:
Vehicle is at muddy, ice and snow, wet and slippery road traveling, the adhesion on two driving wheels and road surface has very big difference, use the vehicle of common open type differential mechanism, the first skid of single wheel that adhesion is little, causes vehicle can not continue to travel, even whipping is out of control, use the vehicle of helical tooth limited-slip differential, by automatically reduce distribute to slip wheel moment of torsion, the torque axis of minimizing is moved on to the good side of adhesion, realize vehicle and get rid of poverty, guarantee driving safety.
The present invention has the helical tooth limited-slip differential of automatic locking function, and locking coefficient can be stabilized between 0.45-0.47, is far longer than the locking coefficient of common open type differential mechanism 0.03 left and right.The side that namely adhesion is good can realize the moment of torsion that distributes 70%, drives vehicle to get rid of poverty.
The present invention has the helical tooth limited-slip differential of automatic locking function, the sliding function operation process of limit:
1, skid in left side: now left half axle gear 4 rotating speeds are apparently higher than differential casing 1, three left planetary pinions 6 that are engaged with can produce higher reverse autobiography, drive three right planetary pinions 7 of engagement between two around right axle shaft gear 5 forward autobiographies simultaneously, because of the gear engagement pair of large helix angle, there is very large internal friction; The pressure angle that gear is larger also forces planetary pinion to press to the outer wall in planetary pinion hole in engagement process, spiral gear engagement also has very large axial force, engagement is interior 8 gears, capital has an end face to press to left end cap 3, housing 1 or connecting plate 2, making a concerted effort of these power, by the rotation of the whole epicyclic train of restriction, thereby restriction left half axle gear 4 rotating speeds are apparently higher than differential casing 1, and torque axis is moved on on right axle shaft gear 5, slide thereby reach restriction left side wheel, and wheel shifts the object of moment of torsion to the right.
2, skid in right side: above-mentioned left and right gear is exchanged.
3, reversing is skidded: above-mentioned two situations gear sense of rotation is exchanged.
Helical tooth limited-slip differential is because of its structural characteristics, for guaranteeing the working life of workpiece, locking coefficient can not be set too high, this causes vehicle for example thoroughly to lose at single wheel, under the ultimate state of adhesion (single wheel is unsettled), to lose the sliding function of limit, can be as open type differential mechanism, the wheel that thoroughly loses adhesion also can produce idle running, although at this moment artificial pulling the hand brake, or gently step on braking, the wheel that can dally applies resistance, moment of torsion is shifted to the good side of adhesion, single wheel drive is got rid of poverty vehicle, but need driver's proficiency in action, suitable operation, difficulty is larger.
At present a lot of vehicles are equipped with vehicle stabilization control system, in the time there is larger improper speed discrepancy in its perception two driving wheels, can initiatively brake high rotating speed wheel, helical tooth limited-slip differential can be realized moment of torsion transferance in any case completely under it coordinates, and realizes the sliding function of limit.But braking meeting consumption of power, sacrifices vehicle performance, in cross-country fan's eye, only has locking differential mechanism, be only real unyielding man's mark.
Four, latch functions:
The lockable mechanism of differential mechanism can thoroughly lose under the ultimate state of adhesion at single wheel, when the sliding disabler of limit, (be set as both sides wheel and occur more than 100 revs/min speed discrepancy), automatic locking, when the speed of a motor vehicle is higher than 20 kilometers/hour of automatic unlockings, working procedure is completely automatic, without manual control and intervention.Introduce respectively the locking process that left and right wheel hanging skids below.
1, left side skid:
When left side wheel idle running, right axle shaft gear 5 remains static, the cam ring 8 linking with it by spline also remains static, the external cam 9 being combined together by projection with cam ring 8, remain static equally, now housing 1 is in rotation, drive is assemblied in housing 1 centrifugal gear shaft 16 above, rotate around external cam 9, because the gear on external cam 9 gear and centrifugal gear shaft 16 is above meshed, and the two gear ratio is very large, centrifugal gear shaft 16 produces high-speed forward rotation, while reaching setting speed, the elastic force that upper and lower two locking centrifugal-blocks 14 overcome centrifugal torsion spring 15 is thrown away, upper locking centrifugal-block 14 withstands on to remove and gets rid of on the locking fulcrum of piece 20, centrifugal gear shaft 16 is braked, external cam 9 is centrifuged gear shaft 16 and drives, rotate with housing 1, and move right along the lead of screw of end cam, compress successively internal toothed friction plate 10, light face friction plate 11, external tooth friction plate 12, be pressed on right end cap 24, now power passes through housing 1 to right end cap 24 to friction plate 12, light face friction plate 11, then internal toothed friction plate 10 transmits to right axle shaft gear 5, force right axle shaft gear 5 raising speeds, and synchronous with housing 1, use right side wheels is got rid of poverty.
2, right side idle running:
When right side wheels idle running, left half axle gear 4 remains static, right axle shaft gear 5 is in rotation status, and rotating speed is higher than housing 1 twice, right axle shaft gear 5 drives cam ring 8 and the synchronized rotation of external cam 9, the reverse rotation of the centrifugal gear shaft 16 of gear drive in external cam 9, while reaching setting speed, the elastic force that upper and lower two locking centrifugal-blocks 14 overcome centrifugal torsion spring 15 is thrown away, lower locking centrifugal-block withstands on to remove and gets rid of on another locking strong point of piece 20, centrifugal gear shaft 16 is braked, external cam 9 is centrifuged gear shaft 16 and brakes, and move right along the lead of screw of end cam, compress successively internal toothed friction plate 10, light face friction plate 11, external tooth friction plate 12, be pressed on right end cap 24, now power passes through housing 1 to right end cap 24 to friction plate 12, light face friction plate 11, then internal toothed friction plate 10 transmits to right axle shaft gear 5, force right axle shaft gear 5 reductions of speed, and synchronous with housing 1, three left planetary pinions 6 and three right planetary pinions 7 stop autobiography, left half axle gear 4 raising speeds, and synchronous with housing 1, use left side wheel is got rid of poverty.
Left and right centrifugal mechanism end cap 13 in locking trigger mechanism, relies on the elastic force of Compress Spring 19 to hold out against on cover of wedge 18 and centrifugal gear shaft 16, in the time that centrifugal gear shaft 16 surpasses moment of torsion rotation, can produce relatively and trackslip, with the safety of protection mechanism part.
Five, unlocking function:
This differential mechanism is after locking, when the speed of a motor vehicle is higher than 20 kilometers/hour, remove and get rid of piece 20, under the effect of centrifugal force, overcome the torsion that gets rid of piece torsion spring 21, stand away, locking centrifugal-block 14 resets under the effect of centrifugal torsion spring 15, and centrifugal gear shaft 16 is replied and freely rotated, external cam 9 is under the effect of Corrugation pad 25, again reset left, locking is removed, and waits for work cycle next time.
Introduction by unlocking function can be known, if car speed is higher than 20 kilometers/hour, piece 20 is got rid of in releasing, under the effect of centrifugal force, overcome the torsion of torsion spring 21, leave locking centrifugal-block 14 1 segment distances, no matter produce great speed discrepancy, locking centrifugal-block 14 is encountered never to remove and is got rid of the locking fulcrum of piece 20, and differential mechanism is never by locking, the Security while guaranteeing vehicle high-speed operation.
Claims (7)
1. a helical tooth limited-slip differential with automatic locking function, comprises housing, is symmetrically set with left half axle gear and right axle shaft gear in housing; Left half axle gear with
threeleft planetary pinion engagement; Three left planetary pinions are arranged in three left side planet gear holes of housing left side and housing shaft line parallel; Right axle shaft gear engages with three right planetary pinions; Three right planetary pinions are arranged in the planetary pinion hole, three right sides of housing right side and housing shaft line parallel; Three left planetary pinions engage between two with three right planetary pinions respectively, it is characterized in that: housing is provided with Locking Device.
2. according to the helical tooth limited-slip differential described in claims 1 with automatic locking function, it is characterized in that: described Locking Device comprises the connecting plate and the right end cap that are arranged on housing right-hand member outside; In the cavity that connecting plate and right end cap form, be provided with the right axle shaft gear extended end with external splines, on right axle shaft gear extended end, be provided with the cam ring with internal spline, cam ring its right end face arranges three cam ring spirality projections; The right side of cam ring is provided with external cam, and external cam left side is provided with three external cam spirality projections; Cam ring spirality projection matches with external cam spirality projection; External cam inner hole sleeve is contained on the cylindrical of cam ring right side;
The right side of external cam is provided with locking friction plate assembly, and locking friction plate assembly comprises internal toothed friction plate with internal spline and the external tooth friction plate with outer process; Described internal toothed friction plate and external tooth friction plate are arranged alternately; Described internal toothed friction plate and external tooth friction plate match with the extended end of right axle shaft gear and the internal recess of right end cap respectively, and right end cap is fitted on connecting plate.
3. according to the helical tooth limited-slip differential described in claims 2 with automatic locking function, it is characterized in that: described surface of shell is along housing shaft to being provided with locking trigger mechanism and locking cancel system.
4. according to the helical tooth limited-slip differential described in claims 3 with automatic locking function, it is characterized in that: described trigger mechanism comprises centrifugal gear shaft, and being arranged on upper centrifugal-block and the lower centrifugal-block on centrifugal gear shaft, upper centrifugal-block and lower centrifugal-block both sides are provided with left centrifugal end cap and right centrifugal end cap; Inside left centrifugal end cap and right centrifugal end cap, on centrifugal gear shaft, be set with Compress Spring; Left centrifugal end cap is connected by pin with lower centrifugal-block with right centrifugal end cap and upper centrifugal-block; Pin middle part is set with the torsion spring for limiting upper centrifugal-block and lower centrifugal-block position; Described locking cancel system comprises removing to get rid of piece axle and be sleeved on to remove and gets rid of releasing on piece axle and get rid of piece and get rid of piece torsion spring.
5. according to the helical tooth limited-slip differential described in claims 4 with automatic locking function, it is characterized in that: described centrifugal gear shaft left end is arranged in the supported hole of housing left side, and centrifugal gear shaft right-hand member is arranged in the supported hole of right end cap right side.
6. according to the helical tooth limited-slip differential described in claims 4 with automatic locking function, it is characterized in that: the centrifugal end cap in a described left side and right centrifugal end cap are provided with cone shape hole, cone shape hole coordinates with the tapered portion being fitted on cover of wedge and the centrifugal gear shaft on gear shaft respectively.
7. according to the helical tooth limited-slip differential described in claims 4 with automatic locking function, it is characterized in that: described releasing is got rid of piece axle and is parallel to centrifugal gear shaft; Releasing is got rid of piece axle left end and is arranged in housing left positioner hole, and right-hand member is arranged in housing right-hand member positioning hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410078917.3A CN103807405B (en) | 2014-03-06 | 2014-03-06 | There is the helical tooth limited-slip differential of automatic locking function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410078917.3A CN103807405B (en) | 2014-03-06 | 2014-03-06 | There is the helical tooth limited-slip differential of automatic locking function |
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| CN103807405A true CN103807405A (en) | 2014-05-21 |
| CN103807405B CN103807405B (en) | 2016-03-30 |
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| CN104141767A (en) * | 2014-07-25 | 2014-11-12 | 湖南农业大学 | Planetary-gear type centrifugal friction-slipping-limiting inter-axle differential mechanism for vehicle |
| CN104565277A (en) * | 2014-12-30 | 2015-04-29 | 东风汽车公司 | Planetary differential structure of electronically-controlled transfer case |
| CN105276125A (en) * | 2014-07-18 | 2016-01-27 | 伊顿公司 | Differential assembly with helical pinion gear having protuberance |
| CN106438916A (en) * | 2016-12-03 | 2017-02-22 | 唐山爱特精密机器制造有限公司 | Electronically controlled locking screw tooth limited slip differential |
| CN106481777A (en) * | 2016-11-16 | 2017-03-08 | 郑州日产汽车有限公司 | There is the rear axle assy of the sliding latch functions of limit |
| CN107387714A (en) * | 2017-06-16 | 2017-11-24 | 湖北航天技术研究院特种车辆技术中心 | A kind of limited-slip differential assembly and main reducing gear |
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| CN113958681A (en) * | 2021-09-28 | 2022-01-21 | 东风汽车零部件(集团)有限公司刃量具分公司 | Large helical angle gear type limited slip differential |
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| CN105276125A (en) * | 2014-07-18 | 2016-01-27 | 伊顿公司 | Differential assembly with helical pinion gear having protuberance |
| CN105276125B (en) * | 2014-07-18 | 2021-10-29 | 伊顿智能动力有限公司 | Differential assembly having helical pinion gear with lobes |
| CN104141767A (en) * | 2014-07-25 | 2014-11-12 | 湖南农业大学 | Planetary-gear type centrifugal friction-slipping-limiting inter-axle differential mechanism for vehicle |
| CN104565277A (en) * | 2014-12-30 | 2015-04-29 | 东风汽车公司 | Planetary differential structure of electronically-controlled transfer case |
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| CN106438916A (en) * | 2016-12-03 | 2017-02-22 | 唐山爱特精密机器制造有限公司 | Electronically controlled locking screw tooth limited slip differential |
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| CN113958681A (en) * | 2021-09-28 | 2022-01-21 | 东风汽车零部件(集团)有限公司刃量具分公司 | Large helical angle gear type limited slip differential |
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