CN105042018A - Hydraulic drive friction locking direct connection type differential mechanism with damping structures - Google Patents
Hydraulic drive friction locking direct connection type differential mechanism with damping structures Download PDFInfo
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- CN105042018A CN105042018A CN201510368725.0A CN201510368725A CN105042018A CN 105042018 A CN105042018 A CN 105042018A CN 201510368725 A CN201510368725 A CN 201510368725A CN 105042018 A CN105042018 A CN 105042018A
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- central siphon
- oil
- differential mechanism
- damping structure
- differential gear
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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
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
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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
- F16H48/24—Arrangements for suppressing or influencing the differential action, e.g. locking devices using positive clutches or brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/32—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using fluid pressure actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
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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
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
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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
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
- F16H57/0483—Axle or inter-axle differentials
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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
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H2048/204—Control of arrangements for suppressing differential actions
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Retarders (AREA)
Abstract
The invention relates to an automobile differential mechanism. A hydraulic drive friction locking direct connection type differential mechanism with damping structures comprises a planet carrier with a fixed friction plate, a first half shaft gear with a first shaft pipe, a second half shaft gear with a second shaft pipe, and a sliding cylinder. The first shaft pipe is provided with an oil inlet hole of a first one-way valve. The second shaft pipe is provided with a push plug and a flow limiting hole. The push plug is connected with a movable friction plate matched with the fixed friction plate. The sliding cylinder penetrates the first shaft pipe and the second shaft pipe in a sliding manner. The sliding cylinder is provided with a second one-way valve, a tooth-shaped ring groove and a long-strip-shaped groove which are opened towards the interior of the second shaft pipe. The second shaft pipe is provided with a first drive block matched with the tooth-shaped annular groove. The second shaft pipe is provided with a second drive block matched with the long-strip-shaped groove. The half shaft gears are provided with the damping structures. The automobile differential mechanism has the beneficial effects that the damping effect is good, when the differential speed of two half shafts is larger than the set value, the two half shafts can synchronously rotate, and the problem that an existing differential mechanism affects the passing capability of an automobile is solved.
Description
Technical field
The present invention relates to automobile differential, particularly relate to a kind of direct-connected differential mechanism of hydraulic driving friction locking being provided with vibration damping structure.
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: road vibration is large to the amount of differential mechanism through the axle journal transmission of semiaxis, and namely effectiveness in vibration suppression is poor; When automobile travels on bad road, passing capacity can be had a strong impact on.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 a kind of good damping result, the direct-connected differential mechanism of hydraulic driving friction locking being provided with vibration damping structure of two semiaxis synchronous axial system can be made when the differential of two semiaxis is greater than setting value, solve existing differential shock weak effect, the problem of passing capacity can be had a strong impact on when automobile travels on bad road.
Above technical problem is solved by following technical proposal: a kind of direct-connected differential mechanism of hydraulic driving friction locking being provided with vibration damping structure, comprise planetary wheel carrier, first differential gear, second differential gear and sliding cylinder, described planetary pinion all meshes together with described first differential gear and the second differential gear, described planetary wheel carrier is provided with determines friction plate, described first differential gear is provided with the first central siphon, described first central siphon is provided with oil inlet hole, described oil inlet hole is provided with the first one-way valve opened towards the first central siphon inside, described second differential gear is provided with the second central siphon, described second central siphon is provided with plunger and metering hole, described metering hole and oil inlet hole link together, described plunger is connected with the described movable friction plate determined friction plate and coordinate, described sliding cylinder slides and is located in described first central siphon and the second central siphon, described sliding cylinder is provided with the second one-way valve opened towards the second central siphon inside, the profile of tooth annular groove extended along sliding cylinder circumference and the axially extended rectangular groove along sliding cylinder, described first central siphon is provided with first driving block of sliding plug in described profile of tooth annular groove, described second central siphon is provided with second driving block of sliding plug in described rectangular groove, described first differential gear and the second differential gear are all provided with axle journal, the outer circumferential face of described axle journal is provided with some vibration damping structures along the distribution of axle journal circumference.In the first central siphon, the second central siphon and sliding cylinder, hydraulic oil is all filled during use, when differential mechanism produces difference phenomenon, first central siphon and the second central siphon can produce speed discrepancy, this speed discrepancy make under the mating reaction of profile of tooth chute and the first driving block sliding cylinder along with the second central siphon rotate while also move axially.When sliding cylinder 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 first central siphon makes the hydraulic oil in the second central siphon reflux 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 movable friction plate together with determining friction plate and being pushed against, 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 the second tubular axis flows out through metering hole after synchronous axial system, movable friction plate and determine friction plate disengagement, make two semiaxis (not only the first semiaxis and the second semiaxis) but also can normal differential.When sliding cylinder 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 cylinder 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.Axle journal arranges shock-damping structure, vibration can be reduced through axle journal transmission to the amount of differential mechanism inside, so good damping result.
As preferably, the described shock-damping structure radial direction comprised along described axle journal is connected to adjusting nut together, core retainer plate, small end successively towards the butterfly spring of core retainer plate and mounting plate, described mounting plate be connected with through after described elastomeric spring and core retainer plate with the adjusting screw rod that described adjusting nut is threaded togather, described core retainer plate is externally connected with rubber ring, described rubber ring is externally connected with quality circles, and described rubber ring is provided with the taper type counterbore pushing down butterfly spring.The quality circles of shock-damping structure provide mass M for shock-damping structure, and rubber ring provides rigidity and damping for shock-damping structure, by the rubber ring of shock-damping structure, vibrational energy is converted to frictional heat energy and consumes.Can be adjusted rigidity and the damping of shock-damping structure by the weight of adjustment mass block circle and the hardness of rubber ring, the frequency when model frequency of shock-damping structure is resonated with automobile traveling is consistent; By the precompression of rotating adjusting nut adjustable elastic backing plate, the scope of adjustment shock-damping structure rigidity and damping can be expanded.
As preferably, in described core retainer plate, be provided with rubber bushing.The inner peripheral surface of core retainer plate and adjusting screw rod can be avoided to wipe and to touch generation vibration noise.
As preferably, the outer circumferential face of described core retainer plate is provided with several and stretches into core retainer plate portion connecting ring in rubber ring, and the inner peripheral surface of described quality circles is provided with several and stretches into quality circles portion connecting ring in described rubber ring.Connect more firm.
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 first central siphon sealed rotational is arranged with the first connecting sleeve, the first circular groove extended along the first central siphon circumference is provided with between described first connecting sleeve and the first central siphon, described filler opening is arranged at described first circular groove, described first connecting sleeve is provided with the through first interface to described first circular groove, described second central siphon sealed rotational is arranged with the second connecting sleeve, the second circular groove extended along the second central siphon circumference is provided with between described second connecting sleeve and the second central siphon, described metering hole is arranged at described second circular groove, described second connecting sleeve is provided with through the second interface to described second circular groove, described first interface and the second import are linked together by oil pipe.Reliably metering hole and oil inlet 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; Good damping result.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the perspective view of sliding cylinder.
Fig. 3 is the schematic diagram of the first driving block.
Fig. 4 is planetary pinion in the embodiment of the present invention two and differential gear schematic diagram when meshing together.
Fig. 5 is the close-up schematic view at the A place of Fig. 4.
Fig. 6 is the close-up schematic view at the B place of Fig. 4.
Fig. 7 is the cross-sectional schematic of this shock-damping structure.
In figure: planetary wheel carrier 1, driven gear 15, shock-damping structure 2, mounting plate 21, butterfly spring 22, core retainer plate 23, core retainer plate portion connecting ring 231, adjusting nut 24, locking nut 25, adjusting screw rod 26, rubber bushing 27, rubber ring 28, taper type counterbore 281, quality circles 29, quality circles portion connecting ring 291, determine friction plate 3, movable friction plate 4, planet wheel shaft 5, 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 circular groove 732, first driving block 734, linkage section 7341, drive section 7342, oil pipe 74, first connecting sleeve 75, first interface 751, first one-way valve 76, second central siphon 77, metering hole 771, second circular groove 772, relief hole 773, second driving block 774, plunger 78, second connecting sleeve 79, second interface 791, 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 cylinder 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 direct-connected differential mechanism of hydraulic driving friction locking being provided with vibration damping structure, comprises planetary wheel carrier 1 and sliding cylinder 9.Planetary wheel carrier 1 is shell construction.Planetary wheel carrier 1 be externally connected to driven gear 15.Driven gear 15 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.Axle journal 71 outer circumferential face is provided with several shock-damping structures 2 distributed along axle journal circumference.Shock-damping structure 2 comprises mounting plate 21 and quality circles 29.Mounting plate 21 and quality circles 29 are along the radially direct of axle journal 71.Differential gear 7 is rotationally connected with planetary wheel carrier 1 by axle journal 71.Axle journal 71 is tubular structure.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.Two differential gears 7 are the first differential gear 7-1 and the second differential gear 7-2.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.
First differential gear 7-1 is provided with the first central siphon 73.First central siphon 73 is provided with oil inlet hole 731.First central siphon 73 sealed rotational is arranged with the first connecting sleeve 75.The first circular groove 732 extended along the first central siphon circumference is provided with between first connecting sleeve 75 and the first central siphon 73.Oil inlet hole 731 is arranged at the first circular groove 732.First connecting sleeve 75 is provided with the through first interface 751 to the first circular groove 732.Oil inlet hole 731 is provided with the first one-way valve 76 opened towards the first central siphon inside.Second differential gear 7-2 is provided with the second central siphon 77.Second central siphon 77 is provided with plunger 78, metering hole 771 and relief 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.Only when first connect tooth 31 to be connected with second tooth 41 be pushed against together time, plunger 78 ability staggers with relief hole 773.Second central siphon 77 sealed rotational is arranged with the second connecting sleeve 79.The second circular groove 772 extended along the second central siphon circumference is provided with between second connecting sleeve 79 and the second central siphon 77.Metering hole 771 is communicated with the second circular groove 772 with relief hole 773.Second connecting sleeve 79 is provided with through the second interface 791 to the second circular groove 772.First interface 751 and the second interface 791 are linked together by oil pipe 74.
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.
Sliding cylinder 9 slides simultaneously and is located in the first central siphon 73 and the second central siphon 77.The outer circumferential face of sliding cylinder 9 is provided with profile of tooth annular groove 91 and some rectangular grooves 92.Rectangular groove 92 extends along the axis of sliding cylinder 9.Rectangular groove 92 is along the circumference distribution of sliding cylinder 9.Drive section 7342 sliding plug in profile of tooth annular groove 91.Second driving block 774 sliding plug is in rectangular groove 92.Sliding cylinder 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).
See Fig. 2, profile of tooth annular groove 91 extends along sliding cylinder 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 is along the circumference distribution of sliding cylinder 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. 1) 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. 3, 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. 2) groove width equal or be less than less than 0.1 millimeter.
See Fig. 7, shock-damping structure 2 also comprises locking nut 25, adjusting nut 24, core retainer plate 23 and the small end butterfly spring 22 towards core retainer plate.Together with locking nut 25, adjusting nut 24, core retainer plate 23, butterfly spring 22 and mounting plate 21 are connected to successively along the radial direction of axle journal.Mounting plate 21 is connected with adjusting screw rod 26.Adjusting screw rod 26 is threaded togather with adjusting nut 24 and locking nut 25 through after butterfly spring 22 and core retainer plate 23.Rubber bushing 27 is provided with in core retainer plate 23.Core retainer plate 23 is externally connected with rubber ring 28.The outer circumferential face of core retainer plate 23 is provided with several and stretches into core retainer plate portion connecting ring 231 in rubber ring 28.Rubber ring 28 is provided with the taper type counterbore 281 pushing down butterfly spring 22.Quality circles 29 are connected to outside rubber ring 28.Quality circles 29 are made for steel.The inner peripheral surface of quality circles 29 is provided with several and stretches into quality circles portion connecting ring 291 in rubber ring 28.Shock-damping structure 2 links together with axle journal by being welded in journal surface by mounting plate 21.
See Fig. 1, during use, in the first central siphon 73, sliding cylinder 9, connecting tube 74 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 15 and drives planetary wheel carrier 1 one axle journal 71 for axle rotation, 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, 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, sliding cylinder 9 is also done axially to move around along with while the second central siphon 77 rotation.When sliding cylinder 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 through metering hole 771, oil cylinder 74 and refluxes to the first central siphon 73 through oilhole 731, when differential is in scope of design, hydraulic oil can flow out the second central siphon 77 in time, therefore plunger 78 can not make to determine together with friction plate 3 is pushed against with movable friction plate 4.When produce differential be greater than setting value namely skid time, hydraulic oil in second central siphon 77 can not flow out in time from metering hole 771, thus pressure plunger 78 is pushed away by the right side, plunger 78 drive movable friction plate 4 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 the second tubular axis 77 flows out through metering hole 771 after synchronous axial system, determine the extruding force that friction plate 3 and movable friction plate 4 receive to diminish, the two can produce relative sliding, makes two semiaxis 7(i.e. the first semiaxis 7-1 and the second semiaxis 7-2) again can normal differential.When sliding cylinder 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 cylinder 9 surround, can plunger be driven when differential arrives setting value next time.
Embodiment two, and the difference with embodiment one is:
See Fig. 4, 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. 5, 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. 6).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. 4 and Fig. 6, 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. 5, 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.
Claims (10)
1. one kind is provided with the direct-connected differential mechanism of hydraulic driving friction locking of vibration damping structure, 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 cylinder, described planetary wheel carrier is provided with determines friction plate, described first differential gear is provided with the first central siphon, described first central siphon is provided with oil inlet hole, described oil inlet hole is provided with the first one-way valve opened towards the first central siphon inside, described second differential gear is provided with the second central siphon, described second central siphon is provided with plunger and metering hole, described metering hole and oil inlet hole link together, described plunger is connected with the described movable friction plate determined friction plate and coordinate, described sliding cylinder slides and is located in described first central siphon and the second central siphon, described sliding cylinder is provided with the second one-way valve opened towards the second central siphon inside, the profile of tooth annular groove extended along sliding cylinder circumference and the axially extended rectangular groove along sliding cylinder, described first central siphon is provided with first driving block of sliding plug in described profile of tooth annular groove, described second central siphon is provided with second driving block of sliding plug in described rectangular groove, described first differential gear and the second differential gear are all provided with axle journal, the outer circumferential face of described axle journal is provided with some vibration damping structures along the distribution of axle journal circumference.
2. the direct-connected differential mechanism of hydraulic driving friction locking being provided with vibration damping structure according to claim 1, its feature exists, the described shock-damping structure radial direction comprised along described axle journal is connected to adjusting nut together, core retainer plate, small end successively towards the butterfly spring of core retainer plate and mounting plate, described mounting plate be connected with through after described elastomeric spring and core retainer plate with the adjusting screw rod that described adjusting nut is threaded togather, described core retainer plate is externally connected with rubber ring, described rubber ring is externally connected with quality circles, and described rubber ring is provided with the taper type counterbore pushing down butterfly spring.
3. the direct-connected differential mechanism of hydraulic driving friction locking being provided with vibration damping structure according to claim 2, is characterized in that, be provided with rubber bushing in described core retainer plate.
4. the direct-connected differential mechanism of hydraulic driving friction locking being provided with vibration damping structure according to Claims 2 or 3, it is characterized in that, the outer circumferential face of described core retainer plate is provided with several and stretches into core retainer plate portion connecting ring in rubber ring, and the inner peripheral surface of described quality circles is provided with several and stretches into quality circles portion connecting ring in described rubber ring.
5. the direct-connected differential mechanism of hydraulic driving friction locking being provided with vibration damping structure according to claim 1 or 2 or 3, it is characterized in that, described first driving block is rotatably connected with described first central siphon.
6. the direct-connected differential mechanism of hydraulic driving friction locking being provided with vibration damping structure according to claim 5, 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.
7. the direct-connected differential mechanism of hydraulic driving friction locking being provided with vibration damping structure according to claim 6, it is characterized in that, described driving section is round structure, and described driving section is rotatably connected with described linkage section.
8. the direct-connected differential mechanism of hydraulic driving friction locking being provided with vibration damping structure according to claim 1 or 2 or 3, 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.
9. the direct-connected differential mechanism of hydraulic driving friction locking being provided with vibration damping structure according to claim 1 or 2 or 3, 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.
10. the direct-connected differential mechanism of hydraulic driving friction locking being provided with vibration damping structure according to claim 1 or 2 or 3, it is characterized in that, described first central siphon sealed rotational is arranged with the first connecting sleeve, the first circular groove extended along the first central siphon circumference is provided with between described first connecting sleeve and the first central siphon, described oil inlet hole is communicated with described first circular groove, described first connecting sleeve is provided with the through first interface to described first circular groove, described second central siphon sealed rotational is arranged with the second connecting sleeve, the second circular groove extended along the second central siphon circumference is provided with between described second connecting sleeve and the second central siphon, described metering hole is communicated with described second circular groove, described second connecting sleeve is provided with through the second interface to described second circular groove, described first interface and the second interface are linked together by oil pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510368725.0A CN105042018A (en) | 2015-06-30 | 2015-06-30 | Hydraulic drive friction locking direct connection type differential mechanism with damping structures |
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| CN201510368725.0A CN105042018A (en) | 2015-06-30 | 2015-06-30 | Hydraulic drive friction locking direct connection type differential mechanism with damping structures |
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| CN105042018A true CN105042018A (en) | 2015-11-11 |
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| CN201510368725.0A Pending CN105042018A (en) | 2015-06-30 | 2015-06-30 | Hydraulic drive friction locking direct connection type differential mechanism with damping structures |
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| CN106246861A (en) * | 2016-08-31 | 2016-12-21 | 重庆宝进机械制造有限公司 | Gear pump type based on magnetic flow liquid damping differential mechanism |
| CN107672448A (en) * | 2016-08-02 | 2018-02-09 | 舍弗勒技术股份两合公司 | Wheel hub driving device and motor vehicle |
| CN108330061A (en) * | 2018-05-14 | 2018-07-27 | 苏州大学张家港工业技术研究院 | Piezoelectric supersonic microinjection device based on flexure hinge mechanism |
| CN113294478A (en) * | 2021-06-17 | 2021-08-24 | 常州大学 | Damping force is directly proportional to liquid damper of displacement |
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| CN108330061B (en) * | 2018-05-14 | 2024-02-09 | 苏州大学张家港工业技术研究院 | Piezoelectric ultrasonic microinjection device based on flexible hinge mechanism |
| CN113294478A (en) * | 2021-06-17 | 2021-08-24 | 常州大学 | Damping force is directly proportional to liquid damper of displacement |
| CN113294478B (en) * | 2021-06-17 | 2022-04-22 | 常州大学 | Damping force is directly proportional to liquid damper of displacement |
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