CN105003618A - Hydraulic driving indirect friction locking differential mechanism - Google Patents
Hydraulic driving indirect friction locking differential mechanism Download PDFInfo
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- CN105003618A CN105003618A CN201510231985.3A CN201510231985A CN105003618A CN 105003618 A CN105003618 A CN 105003618A CN 201510231985 A CN201510231985 A CN 201510231985A CN 105003618 A CN105003618 A CN 105003618A
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- oil
- central siphon
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- differential
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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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- 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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
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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
- F16H2700/00—Transmission housings and mounting of transmission components therein; Cooling; Lubrication; Flexible suspensions, e.g. floating frames
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention relates to a car differential mechanism. A hydraulic driving indirect friction locking differential mechanism has the beneficial effect that when the differential of two axle shafts is larger than a set value, the two axle shafts can synchronously rotate; and the problem that as for an existing differential mechanism, when a car runs on a bad road, the passing capacity will be seriously influenced is solved. The hydraulic driving indirect friction locking differential mechanism comprises a planet carrier, a first axle shaft gear, a second axle shaft gear, a sliding sleeve, a first shaft pipe and a second shaft pipe; the sliding sleeve is provided with a second one-way valve, a tooth-shaped annular groove and a strip-shaped groove, the first shaft pipe is provided with an oil inlet hole and a first driving block inserted into the tooth-shaped annular groove in a sliding connected manner, the oil inlet hole is provided with a first one-way valve, the second shaft pipe is provided with an oil outlet hole and a second driving block inserted into the strip-shaped groove in a sliding connecting manner, and the planet carrier is provided with a fixed friction plate; and the second axle shaft gear is provided with a hydraulic cylinder, the hydraulic cylinder is provided with a pushing plug, a flow limiting hole and a connecting hole, the pushing plug is connected with a movable friction plate matched with the fixed friction plate, the flow limiting hole and the oil inlet hole are connected together, and the connecting hole and the oil outlet hole are connected together.
Description
Technical field
The present invention relates to automobile differential, particularly relate to a kind of hydraulic driving and indirectly to rub locking differential.
Background technique
Differential mechanism is that one can make rotary motion reach two axles from an axle, and makes the differential attachment that the latter can rotate with different rotating speeds each other.Chinese Patent Application No. 2011800533570, publication date be August 21 in 2013 day, be called the automobile differential namely disclosing an existing structure in the patent document of " locking differential electrically triggered ", automobile differential comprises planetary wheel carrier and is positioned at two differential gears of planetary wheel carrier.During use, the left and right semiaxis (when for being then antero posterior axis during center differential) of automobile stretches into through semiaxis mounting hole after in planetary wheel carrier and links together with two differential gears correspondingly, is driven and rotate by differential gear.In using process, need to inject lubricant oil to lubricate differential mechanism with life-saving.
Existing difference device has the following disadvantages: when automobile travels on bad road, can have a strong impact on passing capacity.Such as when a driving wheel of automobile is absorbed in muddy road surface, although another driving wheel is in good road surface, automobile often can not advance (being commonly called as skidding).Trackslip in driving wheel original place now on muddy road surface, the but transfixion of the wheel in good road surface.This is because wheel on muddy road surface and the adhesion between road surface less, the moment of reaction less to semiaxis effect can only be taken turns by this in road surface, therefore to distribute to this torque taken turns also less for differential mechanism, although the adhesion between another driving wheel and good road surface is larger, but because of the feature of mean allocation torque, make this driving wheel also can only assign to the torque with slipping drive wheel equivalent, so that driving force is not enough to overcome running resistance, automobile can not advance, and power then consumes on slipping drive wheel.Now open the throttle and automobile not only can not be made to advance, waste fuel oil on the contrary, accelerate component wear, especially make tire wear aggravate.
Summary of the invention
The invention provides and the hydraulic driving of two semiaxis synchronous axial system when a kind of differential when two semiaxis is greater than setting value, can be made indirectly to rub locking differential, solve existing differential mechanism can have a strong impact on passing capacity problem when automobile travels on bad road.
Above technical problem is solved by following technical proposal: a kind of hydraulic driving rubs locking differential indirectly, comprise planetary wheel carrier, first differential gear, second differential gear, sliding sleeve, be set in being driven by described first differential gear of sliding sleeve one end and the first central siphon rotated and the second central siphon rotated by described second differential gear driving being set in the sliding sleeve the other end, described planetary pinion all meshes together with described first differential gear and the second differential gear, described sliding sleeve is provided with the second one-way valve opened towards the second central siphon inside, the profile of tooth annular groove extended along sliding sleeve circumference and the axially extended rectangular groove along sliding sleeve, described first central siphon is provided with oil inlet hole and first driving block of sliding plug in described profile of tooth annular groove, described oil inlet hole is provided with the first one-way valve opened towards the first central siphon inside, described second central siphon is provided with oil outlet and second driving block of sliding plug in described rectangular groove, described planetary wheel carrier is connected with determines friction plate, described second differential gear is provided with oil hydraulic cylinder, described oil hydraulic cylinder is provided with plunger, metering hole and attachment hole, described plunger is connected with the described movable friction plate determined friction plate and coordinate, described metering hole and described oil inlet hole link together, described attachment hole links together with described oil outlet.In the first central siphon, the second central siphon, oil hydraulic cylinder and sliding sleeve, all fill hydraulic oil during use, when the rotating speed of two differential gears is identical, the first central siphon is also identical with the rotating speed of the second central siphon, and sliding sleeve only rotates.When namely the rotating speed difference of two differential gears produces difference, the first central siphon and the second central siphon also produce speed discrepancy, this speed discrepancy make under the mating reaction of profile of tooth chute and the first driving block sliding sleeve along with the second central siphon rotate while also move axially.When sliding sleeve moves towards the second central siphon, effect first one-way valve due to pressure reduction opens and the second one-way valve is closed the door, pressure increase in second central siphon makes the hydraulic oil in the second central siphon flow to oil hydraulic cylinder through attachment hole, hydraulic oil in oil hydraulic cylinder refluxes to the first central siphon through metering hole, differential is larger, requires by the flow of metering hole larger, and due to the metering function of metering hole, plunger then can be made to move when flow reaches metering hole design peak value, plunger drives that movable friction plate is dynamic to be determined friction plate and push against and be locked at together, thus realize two semiaxis be fixed together and synchronous axial system to improve the passing capacity (also namely preventing skidding) of automobile, along with the hydraulic oil in oil hydraulic cylinder flows out through metering hole after synchronous axial system, movable friction plate and determine impacting force decline that friction plate is subject to and can produce relative rotation, make two differential gears (not only the first differential gear and the second differential gear) but also can normal differential.When sliding sleeve moves towards the first central siphon, due to effect first closed check valve of pressure reduction and the second one-way valve open, thus in make hydraulic oil add to space that the second central siphon and sliding sleeve surround, can plunger be driven when differential arrives setting value next time.Difference needs to control in how many scopes then to be limited by the peak rate of flow changing metering hole.Profile of tooth chute can be designed as the structural type only having a tooth.
As preferably, described first driving block is rotatably connected with described first central siphon.The first driving block can be reduced with the wearing and tearing between profile of tooth annular groove.
As preferably, described first driving block comprises linkage section and two driving sections linked together with linkage section, and described linkage section is rotatably connected with described first central siphon, and the sliding plug of described driving section is in described profile of tooth annular groove.Can reduce the vibration that the first driving block produces through tooth top and the tooth bottom of profile of tooth annular groove, stationarity when the present invention is run is better.
As preferably, described driving section is round structure, and described driving section is rotatably connected with described linkage section.Can reduce further vibration and the first driving block with the wearing and tearing between profile of tooth annular groove.
As preferably, oil-filling mechanism is provided with in described planetary pinion, described oil-filling mechanism comprises oil outlet, gas supplementing opening, sealing head, sealing head is driven to seal up the first spring of oil outlet, cylinder body and slipper seal are connected to the piston of cylinder body, described cylinder body is divided into air cavity and oil pocket by described piston, described piston is provided with the one-way valve opened towards air cavity, described piston is linked together with described sealing head by connecting rod, described oil outlet is connected with described oil pocket by oil duct, described gas supplementing opening is connected with described air cavity by air flue, described oil outlet is arranged at described planetary tooth top, the distance that described sealing head stretches out described planetary tooth top is greater than the tooth top gap between described planetary pinion and differential gear.During use, lubricant oil is loaded onto in oil pocket, planetary gear rotation is driven when planet wheel shaft rotates, when planetary gear rotation meshes together to the tooth being provided with oil outlet with differential gear, planetary teeth groove drives in sealing head indentation gear, is also moved towards oil pocket by connecting rod driven plunger and drive lubricant oil in oil pocket to flow to oil outlet through oil duct and flow to fueling cavity thus realize the lubrication to gear when Stamping Steel Ribbon inside contracts while making the first spring energy-storage; When sealing head staggers with teeth groove, oil outlet is sealed in nose heave Xinmi City of effect lower seal of the first spring, the proceduredriven piston of sealing head movement moves towards air cavity, now because the pressure in the part outflow of the oil in oil pocket, event oil pocket is less than the pressure of air cavity, one-way valve is opened and to make in replenish air to oil pocket and to reclaim in oil suction chamber by unnecessary having in fueling cavity, make next time piston press oil pocket time lubricant oil can reliably flow out.Achieve self oiling.Can overcome and can produce splash phenomena when lubricating in prior art and the deficiency causing lubrication effect to decline.
As preferably, described planetary wheel carrier is shell construction, and described planetary wheel carrier and differential gear surround Seal cage, is filled with inert gas in described Seal cage, and the air pressure in described Seal cage is greater than a standard atmospheric pressure.In time the heat loss produced during planetary gear rotation can be fallen, prevent temperature from rising too high and affecting the friction effect of connecting plate.
As preferably, described planetary pinion is linked together with planetary wheel carrier by planet wheel shaft, circular interior bar is equipped with rotationally in described planet wheel shaft, the outer circumferential face of described interior bar is provided with the first friction layer, the internal surface of described planet wheel shaft is provided with the second friction layer, together with described interior bar and planet wheel shaft to be connected to the second friction layer by described first friction layer.When planet wheel shaft produces distortion, planet wheel shaft can produce relative to interior bar and rotate, and during rotation, external friction layer and the second friction layer produce friction energy-absorbing and eliminate torque force, thus play the effect of the distortion resistance improving planet wheel shaft.
As preferably, described interior bar comprises left bar and right bar, the left end of described left bar is linked together with described planet wheel shaft by left energy-absorbing spring, the right side of described left bar is provided with some the first commutating tooths along the distribution of left bar circumference, the right-hand member of described right bar is linked together with described planet wheel shaft by right energy-absorbing spring, the left side of described right bar is provided with some the second commutating tooths along the distribution of right bar circumference, and described first commutating tooth and the second commutating tooth mesh together.When driving interior bar also to produce distortion when planet wheel shaft distortion, right bar and left bar can be driven circumferentially to separate under the effect of the first commutating tooth and the second commutating tooth, energy-absorbing camber of spring and energy-absorbing time separately, can be caused.Further by planet wheel shaft distortion resistance.
As preferably, between described planet wheel shaft and interior bar, be filled with rubbing agent.When in using process, the first friction layer and the second friction layer produce wearing and tearing and cause friction energy-absorbing effect to decline, rubbing agent can be filled between the first friction layer and the second friction layer and make the friction energy-absorbing effect that the first friction layer and the second friction layer still keep good, thus solves frictional force and decline and the abutting power that can not adjust easily between the first friction layer and the second friction layer and adjust the problem of frictional force.
The present invention also comprises outrigger, described first central siphon, second central siphon and the second differential gear are all rotationally connected with described outrigger, the entrance point of described oil inlet hole is positioned at the end face of described first central siphon, the outlet end of described oil outlet is positioned at the end face of described second central siphon, the position that the same described outrigger that described metering hole and attachment hole are positioned at described second differential gear is connected, described second differential gear is provided with the first circular groove and the second circular groove with the joint of described outrigger, first circular groove and the second circular groove all extend along the circumference of described second differential gear, described attachment hole is communicated with described first circular groove, described metering hole is communicated with described second circular groove, described outrigger is provided with the first flow and the second runner being communicated with the first circular groove and oil outlet that are communicated with described second circular groove and oil inlet hole.Reliably metering hole and oil inlet hole, oil outlet and attachment hole reliably can be linked together when producing difference.
The present invention has following advantage: the speed discrepancy of two differential gears can be limited in setting difference range, and when causing planetary pinion rotating speed too fast when exceeding setting value, two semiaxis can synchronous axial system, improve automobile passing capacity and can anti-slip; Drive shaft tube can be removed as required by after the transformation of speed of differential gear, more convenient when making to control sliding sleeve.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the enlarged diagram of the first central siphon, sliding sleeve and the second central siphon.
Fig. 3 is the perspective view of sliding sleeve.
Fig. 4 is the schematic diagram of the first driving block.
Fig. 5 is planetary pinion in the embodiment of the present invention two and differential gear schematic diagram when meshing together.
Fig. 6 is the close-up schematic view at the A place of Fig. 5.
Fig. 7 is the close-up schematic view at the B place of Fig. 5.
Fig. 8 is the schematic diagram that the real the present invention of the present invention executes the planet wheel shaft in example three.
In figure: planetary wheel carrier 1, Returnning spring 11, driven gear 12, outrigger 2, first flow 21, second runner 22, first circular groove 23, second circular groove 24, determine friction plate 3, movable friction plate 4, planet wheel shaft 5, interior bar 51, left bar 511, right bar 512, external friction layer 513, first commutating tooth 514, second commutating tooth 515, interior friction layer 52, left energy-absorbing spring 53, right energy-absorbing spring 54, planetary pinion 6, tooth top 61, differential gear 7, first differential gear 7-1, second differential gear 7-2, axle journal 71, internal spline 72, first central siphon 73, oil inlet hole 731, first driving block 734, linkage section 7341, drive section 7342, first tooth sector 735, second tooth sector 736, first jack shaft 737, 3rd tooth sector 738, four fan-shaped gear 739, oil hydraulic cylinder 75, first one-way valve 76, second central siphon 77, metering hole 771, oil outlet 772, attachment hole 773, second driving block 774, 5th tooth sector 775, 6th tooth sector 776, second jack shaft 777, 7th tooth sector 778, 8th tooth sector 779, plunger 78, oil-filling mechanism 8, oil outlet 81, gas supplementing opening 82, sealing head 83, first spring 84, cylinder body 85, air cavity 851, oil pocket 852, piston 86, one-way valve 861, connecting rod 862, oil duct 87, air flue 88, sliding sleeve 9, profile of tooth annular groove 91, rectangular groove 92, second one-way valve 93, sealing head stretches out the distance L1 of planetary tooth top, tooth top gap L2 between planetary pinion and differential gear, the region S1 that two differential gears and planetary pinion surround, Seal cage S2.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
Embodiment one, and see Fig. 1, a kind of hydraulic driving rubs locking differential indirectly, comprises outrigger 2, planetary wheel carrier 1, first central siphon 73, second central siphon 77 and sliding sleeve 9.
Outrigger 2 is provided with first flow 21, second runner 22, first circular groove 23 and the second circular groove 24.
Planetary wheel carrier 1 is shell construction.Planetary wheel carrier 1 be externally connected to driven gear 12.Driven gear 12 is gear ring.The two ends, left and right of planetary wheel carrier 1 are respectively rotatably connected to a differential gear 7.Differential gear 7 is provided with axle journal 71.Differential gear 7 is rotationally connected with planetary wheel carrier 1 by axle journal 71.Axle journal 71 is tubular structure.Axle journal 71 is also rotationally connected with outrigger 2.Internal spline 72 is provided with in axle journal 71.Planetary wheel carrier 1 is also rotatably connected to two planet wheel shafts 5.Planet wheel shaft 5 is connected with planetary pinion 6.Planetary pinion 6 meshes together with two differential gears 7 all simultaneously.Planetary wheel carrier 1 is also connected with determines friction plate 3.Determine friction plate 3 to be positioned at outside the region S1 that two differential gears and planetary pinion surround.Determine friction plate 3 for loop configuration.Planetary wheel carrier 1 and differential gear 7 surround Seal cage S2.Inert gas is filled with in Seal cage S2.Air pressure in Seal cage S2 is greater than a standard atmospheric pressure.Seal cage S2 is also filled with lubricant oil.Two differential gears 7 are distributed as the first differential gear 7-1 and the second differential gear 7-2.
First circular groove 23 and the second circular groove 24 are positioned at the joint of the second differential gear 7-2 with outrigger 2.First circular groove 23 and the second circular groove 24 all extend along the circumference of the second differential gear 7-2.Second differential gear 7-2 is provided with oil hydraulic cylinder 75.Oil hydraulic cylinder 75 is provided with plunger 78, metering hole 771 and attachment hole 773.Plunger 78 is connected with movable friction plate 4.Movable friction plate 4 is positioned at outside the region S1 that two differential gears and planetary pinion surround.Attachment hole 773 is communicated with the first circular groove 23.Metering hole 771 is communicated with the second circular groove 24.
First central siphon 73 is rotationally connected with outrigger 2.First central siphon 73 is provided with the first tooth sector 735.First tooth sector 735 meshes together with the second tooth sector 736.Second tooth sector 736 is connected to one end of the first jack shaft 737.The other end of the first jack shaft 737 is connected with the 3rd tooth sector 738.3rd tooth sector 738 meshes together with four fan-shaped gear 739.Four fan-shaped gear 739 is connected to the axle journal of the first differential gear 7-1.First central siphon 73 is provided with oil inlet hole 731.The entrance point of oil inlet hole 731 is positioned at the end face of the first central siphon 73.Oil inlet hole 731 is communicated with the second circular groove 24 by first flow 21.Oil inlet hole 731 is provided with the first one-way valve 76 opened towards the first central siphon inside.
Second central siphon 77 is rotationally connected with outrigger 2.Second central siphon 77 is provided with the 5th tooth sector 775.5th tooth sector 775 meshes together with the 6th tooth sector 776.6th tooth sector 776 is connected to one end of the second jack shaft 777.The other end of the second jack shaft 777 is connected with the 7th tooth sector 778.7th tooth sector 778 meshes together with the 8th tooth sector 779.8th tooth sector 779 is connected to the axle journal of the second differential gear 7-2.Second central siphon 77 is provided with oil outlet 772.The outlet end of oil outlet 772 is positioned at the end face of the second central siphon 77.Oil outlet 772 is communicated with the first circular groove 23 by the second runner 22.
Sliding sleeve 9 slides simultaneously and is located in the first central siphon 73 and the second central siphon 77.Sliding sleeve 9 is provided with the second one-way valve 93(i.e. the second one-way valve 93 of opening towards the second central siphon 77 inside in figure towards right unlatching).
Planetary wheel carrier 1 is also provided with and makes movable friction plate 4 and determine the Returnning spring 11 that friction plate 3 separates.
See Fig. 2, the first central siphon 73 is provided with some first driving blocks 734.First driving block 734 distributes along the circumference of the first central siphon 73.First driving block 734 comprises linkage section 7341 and drives section 7342.Linkage section 7341 is rotatably connected with the first central siphon 73.Section 7342 is driven to be rotatably connected with linkage section 7341.The rotation axis of linkage section 7341 is parallel with driving the rotation axis of section 7342.Second central siphon 77 is provided with the second driving block 774.Second driving block 774 is rotatably connected with the second central siphon 77.The outer circumferential face of sliding sleeve 9 is provided with profile of tooth annular groove 91 and some rectangular grooves 92.Rectangular groove 92 extends along the axis of sliding sleeve 9.Rectangular groove 92 distributes along the circumference of sliding sleeve 9.First driving block 734 is by driving section 7342 sliding plug in profile of tooth annular groove 91.Second driving block 774 sliding plug is in rectangular groove 92.
See Fig. 3, profile of tooth annular groove 91 extends along sliding sleeve 9 circumference.Rectangular groove 92 has at least two (quantity of the second driving block is identical and be plugged on correspondingly in rectangular groove with rectangular groove quantity accordingly).Rectangular groove 92 distributes along the circumference of sliding sleeve 9.Section is driven to be plugged in described profile of tooth annular groove.Profile of tooth annular groove 91 groove width is everywhere equal.The section of profile of tooth annular groove 91 is rectangle.Drive section 7342(see Fig. 2) be all connected to together with the sidewall of profile of tooth annular groove 91 along the both sides of profile of tooth annular groove width direction.
See Fig. 4, drive section 7342 be round structure (in the present embodiment be cylindrical, other as ball, circular cone and frustoconic shape can).Section 7342 is driven to have two.Drive the diameter of section 7342 with profile of tooth annular groove 91(see Fig. 3) groove width equal or be less than less than 0.1 millimeter.
See Fig. 1 and Fig. 2, during use, in the first central siphon 73, sliding sleeve 9, oil hydraulic cylinder 75 and the second central siphon 77, all fill hydraulic oil.Mesh together with internal spline 72 and link together with the present invention in the axle journal 71 that two semiaxis (for left and right semiaxis or antero posterior axis) stretch into two differential gears 7.Driving gear on power input shaft meshes together with driven gear 12 and drives planetary wheel carrier 1 with axle journal 71 for axle rotates, and planetary wheel carrier 1 pulls differential gear 7 with axle journal 71 for axle rotates by planetary pinion 6.Differential gear 7 drives two semiaxis to rotate.First differential gear 7-1 also drives the first central siphon 73 to rotate by the first jack shaft 737, second differential gear 7-2 also drives the second central siphon 77 to rotate by the second jack shaft 777, and the first central siphon equals the rotating ratio of the second central siphon with the second differential gear with the rotating ratio of the first differential gear.When two differential gears produce rotating speeds inconsistent time, planetary pinion 6 also carries out oneself with planet wheel shaft 5 for axle while revolving round the sun then realizes differential.When producing difference, the first central siphon 73 and the second central siphon 77 also produce difference, and during generation difference, sliding sleeve 9 is also done axially to move around along with while the second central siphon 77 rotation.When sliding sleeve 9 moves towards the second central siphon 77, effect first one-way valve 76 due to pressure reduction is opened and the second one-way valve 93 is closed the door, pressure increase in second central siphon 77 makes the hydraulic oil in the second central siphon enter in oil hydraulic cylinder 75 through the second runner 22 and attachment hole 773, hydraulic oil in oil hydraulic cylinder 75 refluxes to the first central siphon 73 through metering hole 771, first flow 21 and oil inlet hole 731, when differential is in scope of design, hydraulic oil can efflux cylinder pressure 75 in time, therefore plunger 78 can not make movable friction plate 4 realize locking together with determining friction plate 3 and being pushed against.When produce differential be greater than setting value namely skid time, hydraulic oil in oil hydraulic cylinder 75 can not flow out in time from metering hole 771, thus plunger 78 is pushed away by a left side, plunger 78 drive movable friction plate 4 and make movable friction plate 4 realize locking together with determining friction plate 3 and being pushed against thus realize two semiaxis 7 be fixed together and synchronous axial system to improve the passing capacity (also namely preventing skidding) of automobile.Along with the hydraulic oil in oil hydraulic cylinder 75 flows out through metering hole 771 after synchronous axial system, movable friction plate 4, together with determining extruding force that friction plate 3 receives and diminish and can not being locked at, makes two semiaxis 7(i.e. the first semiaxis 7-1 and the second semiaxis 7-2) again can normal differential.When sliding sleeve 9 moves towards the first central siphon 73, effect first one-way valve 76 due to pressure reduction is closed and the second one-way valve 93 is opened, thus in hydraulic oil is added to space that the second central siphon 77 and sliding sleeve 9 surround, can plunger be driven when differential arrives setting value next time.
Embodiment two, and the difference with embodiment one is:
See Fig. 5, in planetary pinion 6, be provided with oil-filling mechanism 8.The number of oil-filling mechanism 8 is equal with the number of teeth of planetary pinion 6.
See Fig. 6, oil-filling mechanism 8 comprises oil outlet 81, gas supplementing opening 82, sealing head 83, first spring 84, cylinder body 85 and piston 86.The oil outlet 81 of same oil-filling mechanism and gas supplementing opening 82 are arranged on the tooth top 61 of the same tooth of planetary pinion 6, the tooth top of same tooth only arranges oil outlet and the gas supplementing opening of an oil-filling mechanism, and namely in the present embodiment, the tooth of oil-filling mechanism and planetary pinion 6 is arranged correspondingly.Sealing head 83 and the first spring 84 are arranged in oil outlet 81, stretch out tooth top 61 at the effect lower seal head 83 of the first spring 84 and seal up oil outlet.The distance L1 that sealing head stretches out planetary tooth top is greater than tooth top gap L2(between planetary pinion and differential gear see Fig. 7).Cylinder body 85 is formed in planetary pinion 6 in the mode of integrative-structure, is the chamber in planetary pinion 6.Piston 86 slipper seal is connected to cylinder body 85.Cylinder body 85 is divided into air cavity 851 and oil pocket 852 by piston 86.Piston 86 is provided with the one-way valve 861 opened towards air cavity 851.Piston 86 is linked together with sealing head 83 by connecting rod 862.Connecting rod 862 links together with slipper seal between planetary pinion 6, and oil outlet 81 is disconnected with air cavity 851.Oil outlet 81 is connected with oil pocket 852 by oil duct 87.Gas supplementing opening 82 is connected with air cavity 851 by air flue 88.Oil duct 87 and air flue 88 are all be formed in planetary pinion 6 in the mode of integrative-structure, are the hole in planetary pinion 6.
The process of the present invention's lubrication is:
See Fig. 5 and Fig. 7, in the process that planetary pinion 6 rotates, bottom surface crush seal 83 contraction in planetary pinion 6 of the teeth groove of differential gear 7, sealing head 83 shrinks and oil outlet 81 is opened and makes the first spring 84 energy storage.
See Fig. 6, also moved towards oil pocket 852 by connecting rod 862 driven plunger 86 when sealing head 83 shrinks, the pressure increase in oil pocket 852 is closed by one-way valve 861 and lubricant oil in oil pocket 852 flows to oil outlet 81 through oil duct 87 and flows out from oil outlet 81 and realize lubrication.
When differential gear loses the squeezing action to sealing head 83, move outside the effect lower seal head 83 of the first spring 84 and oil outlet 81 is sealed up, moved towards air cavity 851 by connecting rod 862 driven plunger 86 when sealing head 83 stretches out, pressure drop in oil pocket 852 and pressure increase in air cavity 851, one-way valve 861 is opened, oil unnecessary in air and fueling cavity 56 is through gas supplementing opening 82, air flue 88 and one-way valve 861 and flow to oil pocket 852, the air pressure that pressure in oil pocket 852 can be maintained in same gear exterior is equal, so that lubricant oil can squeeze out by piston 86 when oil pocket 852 moves next time.
Therefore do not need in the present embodiment to add lubricant oil in planetary wheel carrier, achieve the dry-type working of connecting plate.
Embodiment three, and the difference with embodiment two is:
See Fig. 8, in planet wheel shaft 5, be equipped with circular interior bar 51.Interior bar 51 is tubular structure.The internal surface of planet wheel shaft 5 is provided with interior friction layer 52.Interior bar 51 comprises left bar 511 and right bar 512.The outer circumferential face of left bar 511 and right bar 512 is all provided with external friction layer 513.External friction layer 513 is covered with interior bar 51 along the circumference of interior bar 51.The left end of left bar 511 is linked together with planet wheel shaft 5 by left energy-absorbing spring 53.The right side of left bar 511 is provided with some the first commutating tooths 514 along the distribution of left bar circumference.The right-hand member of right bar 512 is linked together with planet wheel shaft 5 by right energy-absorbing spring 54.The left side of right bar 512 is provided with some the second commutating tooths 515 along the distribution of right bar circumference.First commutating tooth 514 and the second commutating tooth 515 mesh together.Be rotatably connected together with planet wheel shaft 5 together with left bar 511 and right bar 512 to be also all connected to interior friction layer 52 by external friction layer 513.Liquid rubbing agent is filled with in planet wheel shaft 5.
When planet wheel shaft 5 produces distortion, planet wheel shaft 5 can produce relative rotation relative to interior bar 51, and movement process China and foreign countries' friction layer 513 and interior friction layer 52 rub and consume energy and play the effect stoping twisting.If the moment of torsion of planet wheel shaft 5 and result in interior bar 51 also together produce twisting time, now left bar 511 and right bar 512 can separate vertically under the leading role of the first commutating tooth 514 and the second commutating tooth 515, separation process not only can make external friction layer 513 produce friction and energy-absorbing with interior friction layer 52, left energy-absorbing spring 53 and right energy-absorbing spring 54 can also be impelled to be out of shape and energy-absorbing, play energy-absorbing and prevent from reversing the effect produced, thus realizing the distortion resistance improving planet wheel shaft.And right energy-absorbing spring 54 and left energy-absorbing spring 53 can also play the effect of repairing planet wheel shaft 5.
Claims (10)
1. a hydraulic driving rubs locking differential indirectly, comprise planetary wheel carrier, first differential gear and the second differential gear, described planetary pinion all meshes together with described first differential gear and the second differential gear, it is characterized in that, also comprise sliding sleeve, be set in being driven by described first differential gear of sliding sleeve one end and the first central siphon rotated and the second central siphon rotated by described second differential gear driving being set in the sliding sleeve the other end, described sliding sleeve is provided with the second one-way valve opened towards the second central siphon inside, the profile of tooth annular groove extended along sliding sleeve circumference and the axially extended rectangular groove along sliding sleeve, described first central siphon is provided with oil inlet hole and first driving block of sliding plug in described profile of tooth annular groove, described oil inlet hole is provided with the first one-way valve opened towards the first central siphon inside, described second central siphon is provided with oil outlet and second driving block of sliding plug in described rectangular groove, described planetary wheel carrier is connected with determines friction plate, described second differential gear is provided with oil hydraulic cylinder, described oil hydraulic cylinder is provided with plunger, metering hole and attachment hole, described plunger is connected with the described movable friction plate determined friction plate and coordinate, described metering hole and described oil inlet hole link together, described attachment hole links together with described oil outlet.
2. hydraulic driving according to claim 1 rubs locking differential indirectly, and it is characterized in that, described first driving block is rotatably connected with described first central siphon.
3. hydraulic driving according to claim 2 rubs locking differential indirectly, it is characterized in that, described first driving block comprises linkage section and two driving sections linked together with linkage section, described linkage section is rotatably connected with described first central siphon, and the sliding plug of described driving section is in described profile of tooth annular groove.
4. hydraulic driving according to claim 3 rubs locking differential indirectly, and it is characterized in that, described driving section is round structure, and described driving section is rotatably connected with described linkage section.
5. the hydraulic driving according to claim 1 or 2 or 3 or 4 rubs locking differential indirectly, it is characterized in that, oil-filling mechanism is provided with in described planetary pinion, described oil-filling mechanism comprises oil outlet, gas supplementing opening, sealing head, sealing head is driven to seal up the first spring of oil outlet, cylinder body and slipper seal are connected to the piston of cylinder body, described cylinder body is divided into air cavity and oil pocket by described piston, described piston is provided with the one-way valve opened towards air cavity, described piston is linked together with described sealing head by connecting rod, described oil outlet is connected with described oil pocket by oil duct, described gas supplementing opening is connected with described air cavity by air flue, described oil outlet is arranged at described planetary tooth top, the distance that described sealing head stretches out described planetary tooth top is greater than the tooth top gap between described planetary pinion and differential gear.
6. the hydraulic driving according to claim 1 or 2 or 3 or 4 rubs locking differential indirectly, it is characterized in that, described planetary wheel carrier is shell construction, described planetary wheel carrier and differential gear surround Seal cage, be filled with inert gas in described Seal cage, the air pressure in described Seal cage is greater than a standard atmospheric pressure.
7. the hydraulic driving according to claim 1 or 2 or 3 or 4 rubs locking differential indirectly, it is characterized in that, described planetary pinion is linked together with planetary wheel carrier by planet wheel shaft, circular interior bar is equipped with rotationally in described planet wheel shaft, the outer circumferential face of described interior bar is provided with the first friction layer, the internal surface of described planet wheel shaft is provided with the second friction layer, together with described interior bar and planet wheel shaft to be connected to the second friction layer by described first friction layer.
8. hydraulic driving according to claim 7 rubs locking differential indirectly, it is characterized in that, described interior bar comprises left bar and right bar, the left end of described left bar is linked together with described planet wheel shaft by left energy-absorbing spring, the right side of described left bar is provided with some the first commutating tooths along the distribution of left bar circumference, the right-hand member of described right bar is linked together with described planet wheel shaft by right energy-absorbing spring, the left side of described right bar is provided with some the second commutating tooths along the distribution of right bar circumference, and described first commutating tooth and the second commutating tooth mesh together.
9. hydraulic driving according to claim 7 rubs locking differential indirectly, it is characterized in that, is filled with rubbing agent between described planet wheel shaft and interior bar.
10. the hydraulic driving according to claim 1 or 2 or 3 or 4 rubs locking differential indirectly, it is characterized in that, also comprise outrigger, described first central siphon, second central siphon and the second differential gear are all rotationally connected with described outrigger, the entrance point of described oil inlet hole is positioned at the end face of described first central siphon, the outlet end of described oil outlet is positioned at the end face of described second central siphon, the position that the same described outrigger that described metering hole and attachment hole are positioned at described second differential gear is connected, described second differential gear is provided with the first circular groove and the second circular groove with the joint of described outrigger, first circular groove and the second circular groove all extend along the circumference of described second differential gear, described attachment hole is communicated with described first circular groove, described metering hole is communicated with described second circular groove, described outrigger is provided with the first flow and the second runner being communicated with the first circular groove and oil outlet that are communicated with described second circular groove and oil inlet hole.
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| CN201510231985.3A CN105003618A (en) | 2015-05-09 | 2015-05-09 | Hydraulic driving indirect friction locking differential mechanism |
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| CN109185421A (en) * | 2018-11-23 | 2019-01-11 | 湖北科技学院 | A kind of differential mechanism with adaptive latch functions |
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