CN102606642A - Pull-type self-aligning hydraulic release bearing sub-pump unit - Google Patents
Pull-type self-aligning hydraulic release bearing sub-pump unit Download PDFInfo
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- CN102606642A CN102606642A CN2012101040613A CN201210104061A CN102606642A CN 102606642 A CN102606642 A CN 102606642A CN 2012101040613 A CN2012101040613 A CN 2012101040613A CN 201210104061 A CN201210104061 A CN 201210104061A CN 102606642 A CN102606642 A CN 102606642A
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Abstract
The invention relates to a pull-type self-aligning hydraulic release bearing sub-pump unit, which is used for heavy-duty trucks and applicable to heavy-duty commercial vehicles and passenger vehicles with D430 pull-type clutches and belongs to the technical field of automobile bearings. The pull-type self-aligning hydraulic release bearing sub-pump unit comprises a mounting connection mechanism, an aligning mechanism, a bearing mechanism, a hydraulic sub-pump mechanism, a dustproof mechanism and an auxiliary mechanism. The mounting connection mechanism consists of a clutch connecting part and a gearbox connecting part and comprises a separation pull ring, a hoop, a fixing ring and a spiral compression spring. The aligning mechanism comprises an aligning spring plate, an aligning spring plate supporting ring and an aligning spring plate fixing ring. The bearing mechanism comprises an outer ring, an inner ring, a retainer, a steel ball and a bearing seal ring. The hydraulic sub-pump mechanism comprises a cylinder block, a piston, a first leather ring, a second leather ring, a piston ring and a cylinder block ring. The dustproof mechanism comprises an outer dust cover and an inner dust cover, and the auxiliary mechanism comprises an oil inlet screw, a pressure plate and an outer cover.
Description
Technical field
The present invention is pull-type, and what relate to from aligning hydraulic pressure release bearing wheel cylinder unit is a kind of pull-type self-aligning separable bearing of clutch wheel cylinder unit that heavy-duty car is used.This pull-type heavy-duty commercial vehicle, passenger car that uses the D430 pull type clutch that be applicable to from aligning hydraulic pressure release bearing wheel cylinder unit.Belong to the automobile bearing technical field.
Background technique
Traditional automobile clutch working principle is divided into two kinds; A kind of is the mechanical type brace agency: let slip the clutch, and through tie rod pulling shift fork, shift fork promotes or the pulling release bearing separates clutch driven plate; Cut off the power output of motor, thereby realize clutch function.Another kind is to adopt fluid drive mechanism: let slip the clutch, and power is sent to clutch master cylinder, and the master cylinder output oil pressure is given wheel cylinder; Wheel cylinder promotes shift fork; Shift fork promotes or the pulling release bearing separates clutch driven plate, cuts off the power output of motor, thereby realizes clutch function.
But no matter be mechanical type or hydraulic type transmission, release bearing all plays and holds the effect that removes, and all realizes transmission through shift fork in the gearbox.The transmission that the shift fork structure adopts lever principle to come realizable force, shortcoming such as because pull type clutch is used for in-between car and heavy goods vehicles mostly, the shift fork driving torque is big, and impact noise is bigger, and sensitivity is bad, difficult installation, comfort are bad.
Summary of the invention
The objective of the invention is provides a kind of pull-type from aligning hydraulic pressure release bearing wheel cylinder unit to above-mentioned deficiency, for heavy-duty commercial vehicle, the passenger car that uses pull type clutch provides a kind of special release bearing.This release bearing is pull-type from aligning hydraulic pressure release bearing wheel cylinder unit, can effectively realize the clutch function of clutch, and self-adjustable bearing gyration center and the concentric rotation synchronously of clutch cover and plate assembly.This is pull-type from aligning hydraulic pressure release bearing wheel cylinder unit and the use of pull type clutch coupling, can be along with clutch abrasion, and adjustment separates stroke automatically.Possess the function of tradition from the pull-type release bearing of aligning; Gearbox upper shift fork mechanism, axle sleeve and wheel cylinder have been cancelled simultaneously; Directly be installed on the gearbox from aligning hydraulic pressure release bearing wheel cylinder unit pull-type; The oil pressure of clutch master cylinder is sent to clutch, thereby has service behaviour efficiently, strengthened working life.
Pull-typely take following technological scheme to realize from aligning hydraulic pressure release bearing wheel cylinder unit: pull-typely to comprise that from aligning hydraulic pressure release bearing wheel cylinder unit bindiny mechanism, core-regulating mechanism, gear mechanism, hydraulic pressure are installed divides pump mechanism, dust-proof mechanism and assisting agency; Bindiny mechanism is installed forms, comprise and separate draw ring, clip, retaining ring and spiral holddown spring by clutch connected element and gearbox connected element; Core-regulating mechanism comprises aligning spring sheet, aligning spring sheet bracing ring and aligning spring sheet retaining ring; The aligning spring sheet is the core-regulating mechanism critical piece; It is fixed that the axial force that the aligning function produces after being compressed through this part weighs, and aligning spring retaining ring and aligning spring sheet bracing ring mainly have been fixing effects; Gear mechanism comprises outer ring, inner ring, retainer, steel ball and bearing sealed ring, adopts the angle contacting design; Hydraulic pressure divides pump mechanism to comprise cylinder body, piston, first apron, second apron, piston ring and cylinder body ring; Dust-proof mechanism comprises outer dust-proof cover and interior dust-proof cover, and it is inner to stop outside greasy dirt, foul to get into pull-type hydraulic pressure release bearing wheel cylinder, causes the unusual damage of parts, thereby improves the working life of product; Assisting agency comprises filler opening screw, platen and outer cover, provides efficient and convenient used for pull-type when installing from aligning hydraulic pressure release bearing wheel cylinder unit, thereby avoiding the user to install not matching causes product to lose efficacy unusually.
Inner ring, outer ring, retainer, steel ball and bearing sealed ring are assembled into bearing, at the inner high temperature-resistant grease of annotating of bearing, and disposable greasing during assembling, the later stage uses and need not to add grease again.
Bearing Installation is divided the internal piston of pump mechanism at hydraulic pressure, and cycle surface cooperates with the aligning spring sheet, and aligning spring retaining ring is fixed on aligning spring sheet bracing ring in the piston; Aligning spring retaining ring is fixed in the groove of internal piston, makes the aligning spring sheet become compressive state, and finally reaching the required power of bearing radial displacement (aligning force) is 120 ~ 250N; Radial clearance between outer ring external diameter and the internal piston internal diameter realizes radially center adjusting value.Inner ring will separate draw ring through clip to be fixed, and clip is stuck in the inner ring draw-in groove, links together with separating draw ring, and an end that separates draw ring is fixed on the inner ring through clip, and the other end that separates draw ring is fixed on clutch separation through aligning spring retaining ring and refers to; Near being provided with sipes behind the inner ring draw-in groove; The spiral holddown spring is installed in the sipes; The spiral holddown spring produces pretightening force to separating draw ring, and the spiral holddown spring makes separation draw ring, clip, bearing inner race draw-in groove be in the pretension state, and pull-type hydraulic pressure release bearing unit is connected on the clutch; Pull-type from aligning hydraulic pressure release bearing wheel cylinder unit through the mounting hole on the cylinder body, be screwed on gearbox cover.
Cylinder body and piston are formed hydraulic chamber; Form the hydraulic pressure pump structure, the sealability of pump guarantees that by apron first apron, piston ring, piston sleeve and piston stopper are installed on the piston; Piston stopper is stuck in the piston base groove, fixes the piston sleeve and first apron.Piston sleeve directly is enclosed within on the piston, becomes Spielpassung with piston, and first apron is contained between piston sleeve and the piston ring, and piston ring is stuck in second groove of piston base, forms the sealing configuration of piston region.
Second apron, cylinder body ring, cylinder sleeve and cylinder body back-up ring are installed in the cylinder head endoporus, and the cylinder body back-up ring is stuck in the cylinder head endoporus groove, fix the cylinder sleeve and second apron.Cylinder sleeve directly is contained in the cylinder inner bore, becomes Spielpassung with cylinder body, and second apron is contained between cylinder sleeve and the cylinder body ring, and the cylinder body ring is stuck in second groove of cylinder head, forms the sealing configuration at cylinder body position.
Become the interference fit state respectively between second apron, first apron and cylinder body and the piston, form the hydraulic chamber of sealing between second apron and first apron.Cylinder body remains state of rest during work, and piston slides in cylinder inner bore.The position of second apron on the cylinder body also remains state of rest, and the inner lip of second apron cooperates with piston outer wall, when piston slides, is dynamic seal (packing); The outer lip of second apron cooperates with cylinder inner bore, remains state of rest, is static sealing.And effect is just in time opposite during the work of first apron on the piston and second apron on the cylinder body, and the inner lip of first apron cooperates with piston outer wall, and the maintenance state of rest is static sealing; The outer lip of first apron cooperates with inboard wall of cylinder block, when piston slides, is dynamic seal (packing).
Distance is these work theory total kilometres from the pull-type fluid bearing wheel cylinder of aligning unit between cylinder body ring and the piston ring.When Bearing Installation onboard the time, the initial state piston drives apron and moves to the cylinder head position, and near cylinder head 1/3 place, oil pressure gets into and promotes piston in the hydraulic chamber and drive internal bearings toward the cylinder base motion; Bearing is connected clutch separation and refers to, separates to refer to drive the clutch active friction plate and combine from movable friction plate, produces clutch action.
Internal piston is equipped with interior dust-proof cover, and interior dust-proof cover retaining ring is fixed on interior dust-proof cover one end in the groove of internal piston bottom, and base is pressed in the other end of interior dust-proof cover in the cylinder base inside groove; The base external diameter becomes interference fit with the cylinder base internal diameter, and it is to stop outside greasy dirt and dust to get in the hydraulic chamber that interior dust-proof cover mainly acts on; Piston crown has the interior and platen assembling of the groove of cone angle, and platen is riveted in the groove; Outer dust guard holder and outer dust-proof cover are housed on the getting out of a predicament or an embarrassing situation of piston crown.One end of outer dust-proof cover is fixed in the outer dust guard holder opening slot, and the other end of outer dust-proof cover is fixed in the cylinder head water jacket, and outer dust-proof cover effect is to stop outside greasy dirt, dust to get into bearing and hydraulic chamber inside.
The fuel inlet fitting round section joint ring is contained in the fuel inlet fitting groove, and fuel inlet fitting is fixed on through being threaded in the cylinder body oil inlet hole, and the fuel inlet fitting round section joint ring seals up filler opening joint on fuel inlet fitting and the cylinder body, guarantees the sealability that hydraulic chamber is inner.
Two elastic cylindrical pins are pressed into respectively in the boss hole of cylinder body both sides.When entrucking, earlier pull-type hydraulic pressure release bearing wheel cylinder unit is installed on the gearbox cover; When gearbox and motor are installed, promote gearbox and lean on the pretightening force of two elastic cylindrical pins to promote platen, drive piston and bearing are assemblied in clutch separation and refer to; After the clip that bearing is referred to by clutch separation is fixing, gearbox is fixed on the motor; Be connected to the clutch master cylinder oil pipe pull-type in aligning fluid bearing wheel cylinder unit through fuel inlet fitting again; Discharge the air of hydraulic pressure inside cavity; Brake fluid is filled with oil pipe and hydraulic chamber, and let slip the clutch, oil pressure import in the hydraulic pressure cavity of fluid bearing unit; Through release the clutch pedal behind inner ring pulling clutch compressing disc, drive elastic cylindrical pin to the clutch actual separation stroke place; The elastic force self-return that release bearing refers to separation, but elastic cylindrical pin is not followed the platen return, accomplishes to this elastic cylindrical pin function.
Described bearing maximum radial center adjusting value is 1.2～2.2mm.
Described hydraulic pressure divides sealability design accord with Q C/T 77 " the hydraulic vehicle braking wheel cylinder technical specifications " of pump mechanism.The low pressure seal performance: with the positive and negative 7Kp hydraulic pressure of feeding 140Kp in the assembly, pressurize 30 seconds, pressure drop must not be greater than 7Kpa; High pressure sealing performance: feed Maximum operating pressure in the assembly, pressurize 30 seconds, pressure drop is not more than 0.3Mpa; Withstand voltage properties: assembly is fed 130% hydraulic pressure of Maximum operating pressure, keep-uped pressure 10 ~ 20 seconds, assembly does not have leakage.
Working principle: pull-type from aligning hydraulic pressure release bearing wheel cylinder unit in use; Work as let slip the clutch; The clutch master cylinder oil pressure gets into and produces the pull strap dynamic bearing in the pull-type hydraulic pressure release bearing wheel cylinder; Bearing Installation separates the master of clutch, driven friction on clutch separation refers to, cuts off the power transmission of motor and gearbox.Realize vehicle starting, gearshift function.Work as release the clutch pedal, master cylinder pressure disappears, and pull-type hydraulic pressure release bearing wheel cylinder also loses pulling force thereupon, and the master in the clutch, driven friction combine.Recover the power transmission in motor and the gearbox.
The pull-type self-aligning separable hydraulic pressure of the present invention release bearing wheel cylinder unit requires to link with pull type clutch, is a kind ofly to refer to normal contacting structure form, the impact noise in the time of can avoiding clutch on-off with clutch separation.Pull-type hydraulic pressure release bearing can use less Separating force to realize big dynamic torque, and separation effect is high, and operation easily.Because pull-type hydraulic pressure release bearing adopts the inner ring rotation, greasy property is good, adapts to high rotating speed, can effectively reduce noise and improve working life.In order to overcome decentraction that exists with clutch installation back of gearbox; Adopt the self-aligning device; Can effectively adjust alignment error automatically; Solved clutch separation and referred to contact circumferential fricative noise and the wearing and tearing that end face causes because of the decentraction rotation, and reduced bearing to receive the effect of alternating stress radially and the fatigue damage that produces, prolonged the working life of release bearing with release bearing.
Pull-typely clutch slave cylinder and release bearing are combined as a whole, adopt fastening screw trip bolt to be connected with gearbox cover from aligning hydraulic pressure release bearing wheel cylinder unit.Simplify the structure of gearbox, cancelled parts such as shifting fork mechanism in the gearbox, axle sleeve, clutch slave cylinder.Saved the gearbox space, avoided noise that shift fork and release bearing bump produces, install do not match, release bearing sleeve and an axle sleeve friction make problems such as noise.Make that gearbox and clutch work are more firm, the moment loss is littler, and the cut-out engine power is more thorough, operates more easily comfortable.
The supporting use of the present invention and pull type clutch is on heavy-duty commercial vehicle, passenger car.Change the linkage structure of traditional gearbox and release bearing, cancellation shifting fork mechanism, clutch slave cylinder, axle sleeve, saved the gearbox space, alleviated the weight of car load, improved the clutch separation performance simultaneously; It is more simply firm to install; Release bearing changes hydraulic pressure into by mechanical transmission and rotates, make cut off more thorough, the soft noise free of engine power, operation is more easily comfortable.
Bearing of the present invention is the ball bearing structure form, and the carrying of bearing is main to bear axial force, can bear suitable radial force again simultaneously, adapts to high-speed rotation.Bearing is pressed angular contact ball bearing and is carried design, and satisfying axial carrying is main requirement; Pull-typely changed original automobile variable speed box structure, cancelled parts such as disengaging yoke, axle sleeve, clutch slave cylinder, simplified separating mechanism, made transmission, become hydraulic transmission by the mechanical lever transmission from aligning hydraulic pressure release bearing unit.It is more firm to use, safety and comfort; Pull-type do not have original release bearing sleeve from aligning hydraulic pressure release bearing unit, need not to cooperate with axle sleeve, so there has not been the sliding friction of release bearing sleeve and axle sleeve in the past, just do not have defectives such as noise, interference less than rubbing yet.Increasing working life, is 2 to 3 times of general release bearing working life.Pull-typely be installed on the gearbox more fast from aligning hydraulic pressure release bearing unit, and fixing is installed is strengthened.The tradition release bearing is installed and to be received the shift fork position effects, causes installing problems such as not in place, assembling back abnormal work, influences the normal use of release bearing.Hydraulic pressure release bearing wheel cylinder unit only needs cylinder body is fixed on the gearbox cover, refers to be connected with separating, and only needs the gearbox promotion is put in place, just can be with bearing fixing.Pull-type have bigger use stroke from aligning hydraulic pressure release bearing unit, generally is 5～6 times of travel of clutch.So can fully satisfy the usage requirement of clutch.Avoided causing separating the not enough phenomenon of stroke because of design error between gearbox and engine air.Simultaneously it has automatic adjusting and separates the change of stroke because of the clutch separation back that refers to wear and tear.Pull-type have sealability efficiently from aligning hydraulic pressure release bearing unit, can effectively transmit the pressure from clutch master cylinder, and the separating action sensitivity is soft; Noise free; Operate more comfortable convenience, motor and gearbox are had the certain protection effect, improved vehicle performance.
Description of drawings
Below will combine accompanying drawing that the present invention is further specified:
Fig. 1 is the pull-type plan view from aligning hydraulic pressure release bearing wheel cylinder unit of the present invention.
Fig. 2 is the pull-type A-A view from aligning hydraulic pressure release bearing wheel cylinder unit of Fig. 1.
Among the figure: 1, outer ring, 2, inner ring, 3, retaining ring, 4, separate draw ring, 5, the spiral holddown spring, 6, bearing sealed ring, 7, steel ball; 8, retainer, 9, the cylinder body back-up ring, 10, cylinder sleeve, 11, piston, 12, the cylinder body ring, 13, the aligning spring sheet; 14, aligning spring sheet bracing ring, 15, aligning spring sheet retaining ring, 16, clip, 17, elastic cylindrical pin, 18, base, 19, interior dust-proof cover; 20, interior dust-proof cover retaining ring, 21, piston stopper, 22, piston sleeve, 23, first apron, 24, piston ring, 25, cylinder body; 26, fuel inlet fitting, 27, the fuel inlet fitting round section joint ring, 28, outer dust-proof cover, 29, outer dust guard holder, 30, platen, 31, second apron.
Embodiment
With reference to accompanying drawing 1～2, pull-type installation bindiny mechanism, core-regulating mechanism, gear mechanism, the hydraulic pressure of comprising from aligning hydraulic pressure release bearing wheel cylinder unit divides pump mechanism, dust-proof mechanism and assisting agency; Bindiny mechanism is installed forms, comprise and separate draw ring 4, clip 16, retaining ring 3 and spiral holddown spring 5 by clutch connected element and gearbox connected element; Core-regulating mechanism comprises aligning spring sheet 13, aligning spring sheet bracing ring 14 and aligning spring sheet retaining ring 15; The aligning spring sheet is the core-regulating mechanism critical piece; It is fixed that the axial force that the aligning function produces after being compressed through this part weighs, and aligning spring retaining ring 15 mainly has been fixing effect with aligning spring sheet bracing ring 14; Gear mechanism comprises outer ring 1, inner ring 2, retainer 8, steel ball 7 and bearing sealed ring 6, adopts the angle contacting design; Hydraulic pressure divides pump mechanism to comprise cylinder body 25, piston 11, first apron 23, second apron 31, piston ring 24 and cylinder body ring 12; Dust-proof mechanism comprises outer dust-proof cover 28 and interior dust-proof cover 19, and it is inner to stop outside greasy dirt, foul to get into pull-type hydraulic pressure release bearing wheel cylinder, causes the unusual damage of parts, thereby improves the working life of product; Assisting agency comprises filler opening screw, platen 30 and outer cover, provides efficient and convenient used for pull-type when installing from aligning hydraulic pressure release bearing wheel cylinder unit, thereby avoiding the user to install not matching causes product to lose efficacy unusually.
Inner ring 2, outer ring 1, retainer 8, steel ball 7 and bearing sealed ring 6 are assembled into bearing, at the inner high temperature-resistant grease of annotating of bearing, and disposable greasing during assembling, the later stage uses and need not to add grease again.
Bearing Installation is divided piston 11 inside of pump mechanism at hydraulic pressure, and outer ring 1 end face cooperates with aligning spring sheet 13, and aligning spring retaining ring 15 is fixed on aligning spring sheet bracing ring 14 in the piston 11; Aligning spring retaining ring 15 is fixed in the inner groove of piston 11, makes 13 one-tenth compressive states of aligning spring sheet, and finally reaching the required power of bearing radial displacement (aligning force) is 120 ~ 250N; Radial clearance between outer ring 1 external diameter and the piston 11 inner internal diameters realizes radially center adjusting value.It is fixing that inner ring 2 will separate draw ring 4 through clip 16; Clip 16 is stuck in inner ring 2 draw-in grooves; Link together with separating draw ring 4, an end that separates draw ring 4 is fixed on the inner ring 2 through clip 16, and the other end that separates draw ring 4 is fixed on clutch separation through aligning spring retaining ring 15 and refers to; Near being provided with sipes behind inner ring 2 draw-in grooves; Spiral holddown spring 5 is installed in the sipes; 5 pairs of spiral holddown springs separate draw ring and produce pretightening force; Spiral holddown spring 5 makes separation draw ring 4, clip 16, bearing inner race 2 draw-in grooves be in the pretension state, and pull-type hydraulic pressure release bearing unit is connected on the clutch; Pull-type from aligning hydraulic pressure release bearing wheel cylinder unit through the mounting hole on the cylinder body 25, be screwed on gearbox cover.
Become the interference fit state respectively between second apron 31, first apron 23 and cylinder body 25 and the piston 11, form the hydraulic chamber of sealing between second apron 31 and first apron 23.Cylinder body 25 remains state of rest during work, and piston 11 slides in cylinder inner bore.The position of second apron 31 on the cylinder body 25 also remains state of rest, and the inner lip of second apron 31 cooperates with piston 11 outer walls, when piston 11 slides, is dynamic seal (packing); The outer lip of second apron 31 cooperates with cylinder inner bore, remains state of rest, is static sealing.And effect is just in time opposite during second apron, 31 work on first apron 23 on the piston 11 and the cylinder body 25, and the inner lip of first apron 23 cooperates with piston 11 outer walls, and the maintenance state of rest is static sealing; The outer lip of first apron 23 cooperates with cylinder body 25 inwalls, when piston 11 slides, is dynamic seal (packing).
Distance is these work theory total kilometres from the pull-type fluid bearing wheel cylinder of aligning unit between cylinder body ring 12 and the piston ring 24.When Bearing Installation onboard the time, initial state piston 11 drives aprons 23 and moves to cylinder body 25 head positions, and near cylinder body 25 heads 1/3 place, oil pressure gets into and promotes piston 11 in the hydraulic chamber and drive internal bearings motion toward cylinder body 25 bottoms; Bearing is connected clutch separation and refers to, separates to refer to drive the clutch active friction plate and combine from movable friction plate, produces clutch action.
Interior dust-proof cover 19 is equipped with in piston 11 inside, and interior dust-proof cover retaining ring 20 is fixed on interior dust-proof cover 19 1 ends in the groove of piston 11 inner bottom, and base 18 is pressed in the other end of interior dust-proof cover 19 in the cylinder body 25 bottom inside grooves; Base 18 external diameters become interference fit with cylinder body 25 bottom internal diameters, and interior dust-proof cover 19 main effects are to stop outside greasy dirt and dust to get in the hydraulic chamber; Piston 11 heads have interior and platen 30 assemblings of the groove of cone angle, and platen 30 is riveted in the groove; Outer dust guard holder 29 and outer dust-proof cover 28 are housed on the getting out of a predicament or an embarrassing situation of piston 11 heads.One end of outer dust-proof cover 28 is fixed in outer dust guard holder 29 opening slots, and the other end of outer dust-proof cover 28 is fixed in the cylinder body 25 head water jackets, and outer dust-proof cover 28 effects are to stop outside greasy dirt, dust to get into bearing and hydraulic chamber inside.
Fuel inlet fitting round section joint ring 27 is contained in fuel inlet fitting 26 grooves; Fuel inlet fitting 26 is fixed on through being threaded in cylinder body 25 oil inlet holes; Fuel inlet fitting round section joint ring 27 seals up filler opening joint on fuel inlet fitting 26 and the cylinder body 25, guarantees the sealability that hydraulic chamber is inner.
Two elastic cylindrical pins 17 are pressed into respectively in the cylinder body 25 both sides boss holes.When entrucking, earlier pull-type hydraulic pressure release bearing wheel cylinder unit is installed on the gearbox cover; When gearbox and motor are installed, promote gearbox and lean on the pretightening force of two elastic cylindrical pins 17 to promote platen 30, drive piston 11 is assemblied in clutch separation with bearing and refers to; After the clip 16 that bearing is referred to by clutch separation is fixed, gearbox is fixed on the motor; Be connected to the clutch master cylinder oil pipe pull-type in aligning fluid bearing wheel cylinder unit through fuel inlet fitting 26 again; Discharge the air of hydraulic pressure inside cavity; Brake fluid is filled with oil pipe and hydraulic chamber, and let slip the clutch, oil pressure import in the hydraulic pressure cavity of fluid bearing unit; Through release the clutch pedal behind inner ring 2 pulling clutch compressing discs, drive elastic cylindrical pin 17 to the clutch actual separation stroke place; The elastic force self-return that release bearing refers to separation, but elastic cylindrical pin 17 is not followed platen 30 returns, accomplishes to these elastic cylindrical pin 17 functions.
Described pull-type maximum radial center adjusting value from aligning hydraulic pressure release bearing wheel cylinder unit is 1.2～2.2mm.
Described hydraulic pressure divides the sealability design accord with Q C/T77 " hydraulic vehicle braking wheel cylinder technical specifications " of pump mechanism, the low pressure seal performance: with the positive and negative 7Kp hydraulic pressure of feeding 140Kp in the assembly, and pressurize 30 seconds, pressure drop must not be greater than 7Kpa; High pressure sealing performance: feed Maximum operating pressure in the assembly, pressurize 30 seconds, pressure drop is not more than 0.3Mpa; Withstand voltage properties: assembly is fed 130% hydraulic pressure of Maximum operating pressure, keep-uped pressure 10 ~ 20 seconds, assembly does not have leakage.
Claims (5)
- One kind pull-type from aligning hydraulic pressure release bearing wheel cylinder unit, it is characterized in that: comprise that bindiny mechanism, core-regulating mechanism, gear mechanism, hydraulic pressure are installed divides pump mechanism, dust-proof mechanism and assisting agency; Bindiny mechanism is installed forms, comprise and separate draw ring, clip, retaining ring and spiral holddown spring by clutch connected element and gearbox connected element; Core-regulating mechanism comprises aligning spring sheet, aligning spring sheet bracing ring and aligning spring sheet retaining ring; Gear mechanism comprises outer ring, inner ring, retainer, steel ball and bearing sealed ring, adopts angle contacting; Hydraulic pressure divides pump mechanism to comprise cylinder body, piston, first apron, second apron, piston ring and cylinder body ring; Dust-proof mechanism comprises outer dust-proof cover and interior dust-proof cover; Assisting agency comprises filler opening screw, platen and outer cover;Inner ring, outer ring, retainer, steel ball and bearing sealed ring are assembled into bearing; Bearing Installation is divided the internal piston of pump mechanism at hydraulic pressure, and cycle surface cooperates with the aligning spring sheet, and aligning spring retaining ring is fixed on aligning spring sheet bracing ring in the piston; Aligning spring retaining ring is fixed in the groove of internal piston, makes the aligning spring sheet become compressive state; Radial clearance between outer ring external diameter and the internal piston internal diameter realizes radially center adjusting value; Inner ring will separate draw ring through clip to be fixed, and clip is stuck in the inner ring draw-in groove, links together with separating draw ring, and an end that separates draw ring is fixed on the inner ring through clip, and the other end that separates draw ring is fixed on clutch separation through aligning spring retaining ring and refers to; Near being provided with sipes behind the inner ring draw-in groove, the spiral holddown spring is installed in the sipes;Cylinder body and piston are formed hydraulic chamber, and first apron, piston ring, piston sleeve and piston stopper are installed on the piston, and piston stopper is stuck in the piston base groove, fixes the piston sleeve and first apron; Piston sleeve directly is enclosed within on the piston, becomes Spielpassung with piston, and first apron is contained between piston sleeve and the piston ring, and piston ring is stuck in second groove of piston base, forms the sealing configuration of piston region;Second apron, cylinder body ring, cylinder sleeve and cylinder body back-up ring are installed in the cylinder head endoporus, and the cylinder body back-up ring is stuck in the cylinder head endoporus groove, fix the cylinder sleeve and second apron; Cylinder sleeve directly is contained in the cylinder inner bore, becomes Spielpassung with cylinder body, and second apron is contained between cylinder sleeve and the cylinder body ring, and the cylinder body ring is stuck in second groove of cylinder head, forms the sealing configuration at cylinder body position;Internal piston is equipped with interior dust-proof cover, and interior dust-proof cover retaining ring is fixed on interior dust-proof cover one end in the groove of internal piston bottom, and base is pressed in the other end of interior dust-proof cover in the cylinder base inside groove; The base external diameter becomes interference fit with the cylinder base internal diameter; Piston crown has the interior and platen assembling of the groove of cone angle, and platen is riveted in the groove; Outer dust guard holder and outer dust-proof cover are housed on the getting out of a predicament or an embarrassing situation of piston crown, and an end of outer dust-proof cover is fixed in the outer dust guard holder opening slot, and the other end of outer dust-proof cover is fixed in the cylinder head water jacket;The fuel inlet fitting round section joint ring is contained in the fuel inlet fitting groove, and fuel inlet fitting is fixed in the cylinder body oil inlet hole through being threaded.
- 2. according to claim 1 pull-type from aligning hydraulic pressure release bearing wheel cylinder unit, it is characterized in that: through the mounting hole on the cylinder body, be screwed on gearbox cover from aligning hydraulic pressure release bearing unit.
- 3. according to claim 1 pull-type from aligning hydraulic pressure release bearing wheel cylinder unit; It is characterized in that: become the interference fit state respectively between described second apron, first apron and cylinder body and the piston, form the hydraulic chamber of sealing between second apron and first apron; Cylinder body remains state of rest during work, and piston slides in cylinder inner bore, and the position of second apron on the cylinder body also remains state of rest, and the inner lip of second apron cooperates with piston outer wall, when piston slides, is dynamic seal (packing); The outer lip of second apron cooperates with cylinder inner bore, remains state of rest, is static sealing; The inner lip of first apron cooperates with piston outer wall, keeps state of rest, is static sealing; The outer lip of first apron cooperates with inboard wall of cylinder block, when piston slides, is dynamic seal (packing).
- 4. according to claim 1 pull-type from aligning hydraulic pressure release bearing wheel cylinder unit, it is characterized in that: in the inner notes of described bearing high temperature-resistant grease, disposable greasing during assembling.
- 5. according to claim 1 pull-type from aligning hydraulic pressure release bearing wheel cylinder unit, it is characterized in that: described bearing maximum radial center adjusting value is 1.2～2.2mm.
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| CN2012101040613A CN102606642B (en) | 2012-04-11 | 2012-04-11 | Pull-type self-aligning hydraulic release bearing sub-pump unit |
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| CN2012101040613A CN102606642B (en) | 2012-04-11 | 2012-04-11 | Pull-type self-aligning hydraulic release bearing sub-pump unit |
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| CN103470653A (en) * | 2012-11-15 | 2013-12-25 | 芜湖聚达汽车零部件有限公司 | Improved clutch master cylinder |
| CN107725630A (en) * | 2017-11-02 | 2018-02-23 | 中国第汽车股份有限公司 | Carry the pull-type Self-aligning pneumatic clutch actuator of feedback |
| CN109973543A (en) * | 2019-02-18 | 2019-07-05 | 芜湖市中亚汽车制动元件有限公司 | With dust-proof and sealing device end face zigzag clutch |
| CN110219903A (en) * | 2019-05-31 | 2019-09-10 | 陕西法士特齿轮有限责任公司 | A kind of central type clutch actuating mechanism |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470653A (en) * | 2012-11-15 | 2013-12-25 | 芜湖聚达汽车零部件有限公司 | Improved clutch master cylinder |
| CN102996687A (en) * | 2012-12-04 | 2013-03-27 | 重庆市双桥区中帝汽车配件制造有限公司 | Freight car drum brake impulse welding bottom plate and forming process thereof |
| CN102996687B (en) * | 2012-12-04 | 2015-07-29 | 重庆中帝机械制造股份有限公司 | Wagon drum brake device punching weldering base plate and moulding process thereof |
| CN107725630A (en) * | 2017-11-02 | 2018-02-23 | 中国第汽车股份有限公司 | Carry the pull-type Self-aligning pneumatic clutch actuator of feedback |
| CN109973543A (en) * | 2019-02-18 | 2019-07-05 | 芜湖市中亚汽车制动元件有限公司 | With dust-proof and sealing device end face zigzag clutch |
| CN110219903A (en) * | 2019-05-31 | 2019-09-10 | 陕西法士特齿轮有限责任公司 | A kind of central type clutch actuating mechanism |
| CN110219903B (en) * | 2019-05-31 | 2024-06-04 | 陕西法士特齿轮有限责任公司 | Central clutch actuating mechanism |
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|---|---|
| CN102606642B (en) | 2013-12-11 |
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