CN102606642B - 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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- CN102606642B CN102606642B CN2012101040613A CN201210104061A CN102606642B CN 102606642 B CN102606642 B CN 102606642B CN 2012101040613 A CN2012101040613 A CN 2012101040613A CN 201210104061 A CN201210104061 A CN 201210104061A CN 102606642 B CN102606642 B CN 102606642B
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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
What the pull-type Self-aligning hydraulic pressure separating of the present invention bearing wheel cylinder unit related to is a kind of pull-type self-aligning separable bearing of clutch wheel cylinder unit that heavy-duty car is used.This pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder unit is applicable to use heavy-duty commercial vehicle, the passenger car of D430 pull type clutch.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, pull shift fork by tie rod, and shift fork promotes or pulls release bearing that clutch driven plate is separated, 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 to wheel cylinder, wheel cylinder promotes shift fork, shift fork promotes or pulls release bearing that clutch driven plate is separated, and 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 removed, and all by shift fork, realizes transmission in gearbox.Shifting fork structure adopts lever principle to carry out the transmission of realizable force, due to pull type clutch mostly for in-between car and heavy goods vehicles, the shortcoming such as the shift fork driving torque is large, and impact noise is larger, and sensitivity is bad, installation is difficult, comfort is bad.
Summary of the invention
The objective of the invention is provides a kind of pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder unit for 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 Self-aligning hydraulic pressure separating bearing wheel cylinder unit, can effectively realize the clutch function of clutch, and self-adjustable bearing gyration center and the concentric synchronous rotary of clutch cover and plate assembly.This pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder unit and pull type clutch coupling are used, and can, along with clutch abrasion, automatically adjust release travel.The function that possesses the pull-type release bearing of traditional Self-aligning, gearbox upper shift fork mechanism, axle axle sleeve and a wheel cylinder have been cancelled simultaneously, directly by pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder cellular installation on gearbox, the oil pressure of clutch master cylinder is sent to clutch, thereby there is efficient service behaviour, strengthened working life.
Pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder unit takes following technological scheme to realize: pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder unit comprises installs bindiny mechanism, core-regulating mechanism, gear mechanism, hydraulic shunt pump mechanism, dust-proof mechanism and assisting agency; Bindiny mechanism is installed and is formed by clutch connected element and gearbox connected element, comprise and separate draw ring, clip, retaining ring and spiral compression spring; 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, aligning function carrys out homeostasis by the axial force of the compressed rear generation of this part, and aligning spring retaining ring and aligning spring sheet bracing ring have been mainly fixing effects; Gear mechanism comprises outer ring, inner ring, retainer, steel ball and bearing sealed ring, adopts the angle contacting design; Hydraulic shunt pump mechanism comprises cylinder body, piston, the first apron, the second apron, piston ring and cylinder body ring; Dust-proof mechanism comprises outer dust-proof cover and interior dust-proof cover, stops outside greasy dirt, foul to enter pull-type hydraulic pressure separating bearing wheel cylinder inside, causes the abnormal damage of parts, thereby improves the working life of product; Assisting agency comprises filler opening screw, platen and outer cover, during for pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder cellular installation, provides efficient and convenient used, thereby avoiding the user to install not mating causes product extremely to lose efficacy.
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 is used without adding grease again.
Bearing is arranged on the internal piston of hydraulic shunt pump mechanism, and cycle surface coordinates with the aligning spring sheet, and aligning spring retaining ring is fixed on aligning spring sheet bracing ring in 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 internal piston internal diameter, realize radially center adjusting value.Inner ring will separate draw ring by clip to be fixed, and clip is stuck in the inner ring draw-in groove, with separating draw ring, links together, and an end that separates draw ring is fixed on inner ring by clip, and the other end that separates draw ring is fixed on clutch separation by aligning spring retaining ring and refers to; Near after the inner ring draw-in groove, being provided with sipes, the spiral compression spring is installed in sipes, the spiral compression spring produces pretightening force to separating draw ring, and the spiral compression spring makes and separates draw ring, clip, bearing inner race draw-in groove in Pre strained state, and pull-type hydraulic pressure separating bearing unit is connected on clutch; Pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder unit, by the mounting hole on cylinder body, is screwed on gearbox cover.
Cylinder body and piston form hydraulic chamber, form the hydraulic pressure pump structure, the sealability of pump guarantees by apron, on the first apron, piston ring, piston sleeve and piston stopper installation piston, piston stopper is stuck in the piston base groove, fixes piston sleeve and the first apron.Piston sleeve directly is enclosed within on piston, with piston, becomes Spielpassung, and the first apron is contained between piston sleeve and piston ring, and piston ring is stuck in second groove of piston base, forms the sealing configuration of piston region.
The second apron, cylinder body ring, cylinder sleeve and cylinder body back-up ring are arranged in the cylinder head endoporus, and the cylinder body back-up ring is stuck in cylinder head endoporus groove, fix cylinder sleeve and the second apron.Cylinder sleeve directly is contained in cylinder inner bore, with cylinder body, becomes Spielpassung, and the second apron is contained between cylinder sleeve and 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 respectively the interference fit state between the second apron, the first apron and cylinder body and piston, form the hydraulic chamber of sealing between the second apron and the first apron.During work, cylinder body remains state of rest, and piston slides in cylinder inner bore.The position of the second apron on cylinder body also remains state of rest, and the inner lip of the second apron coordinates with piston outer wall, when piston slides, is dynamic seal (packing); The outer lip of the second apron coordinates with cylinder inner bore, remains state of rest, is static sealing.And the first apron on piston is just in time contrary with the second apron when work effect on cylinder body, the inner lip of the first apron coordinates with piston outer wall, and the maintenance state of rest, be static sealing; The outer lip of the first apron coordinates with inboard wall of cylinder block, when piston slides, is dynamic seal (packing).
Between cylinder body ring and piston ring, distance is the work theory total kilometres of the pull-type fluid bearing wheel cylinder of this Self-aligning unit.When bearing is installed onboard, initial state piston driving apron moves to the cylinder head position, approaches cylinder head 1/3 place, and oil pressure enters in hydraulic chamber and promotes the piston driving internal bearings toward the cylinder base motion; Bearing is connected to clutch separation and refers to, separation finger drives active friction plate of clutch and is combined with driven friction disk, 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 interior dust-proof cover Main Function is to stop outside greasy dirt and dust to enter in hydraulic chamber; Piston crown has in the groove of cone angle and the platen assembling, and platen is riveted in groove; On the getting out of a predicament or an embarrassing situation of piston crown, outer dust guard holder and outer dust-proof cover are housed.One end of outer dust-proof cover is fixed in 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 enter 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 threaded connection and is fixed 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 cylinder body, guarantees the sealability of hydraulic chamber inside.
Two elastic cylindrical pins are pressed into respectively in the boss hole of cylinder body both sides.When entrucking, first by pull-type hydraulic pressure separating bearing wheel cylinder cellular installation on gearbox cover; When gearbox and motor are installed, promote the pretightening force promotion platen of gearbox by two elastic cylindrical pins, drive piston and bearing assemble on clutch separation refers to; After the clip that bearing is referred to by clutch separation is fixing, gearbox is fixed on motor; Again the clutch master cylinder oil pipe is connected in pull-type Self-aligning fluid bearing wheel cylinder unit by fuel inlet fitting; Discharge the air of hydraulic chamber inside, brake fluid is filled with oil pipe and hydraulic chamber, let slip the clutch, oil pressure imports in the hydraulic pressure cavity of fluid bearing unit, pull clutch compressing disc, drive elastic cylindrical pin to release the clutch pedal behind clutch actual separation stroke place by inner ring, release bearing is with the elastic force self-return of separation finger, but elastic cylindrical pin is not followed the platen return, to this elastic cylindrical pin function, completes.
Described bearing maximum radial center adjusting value is 1.2～2.2mm.
The sealability design of described hydraulic shunt pump mechanism meets QC/T 77 " hydraulic vehicle braking wheel cylinder technical specifications ".The low pressure seal performance: will pass into the positive and negative 7Kp hydraulic pressure of 140Kp in assembly, pressurize 30 seconds, pressure drop must not be greater than 7Kpa; High pressure sealing performance: pass into Maximum operating pressure in assembly, pressurize 30 seconds, pressure drop is not more than 0.3Mpa; Withstand voltage properties: assembly is passed into to 130% hydraulic pressure of Maximum operating pressure, keep pressure 10 ~ 20 seconds, assembly is without leakage.
Working principle: pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder unit in use, work as let slip the clutch, the clutch master cylinder oil pressure enters in pull-type hydraulic pressure separating bearing wheel cylinder and produces the pull strap dynamic bearing, bearing is arranged on clutch separation and refers to, master, the driven friction of clutch are separated, cut 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 separating bearing wheel cylinder also loses pulling force thereupon, the master in clutch, driven friction combination.Recover the power transmission in motor and gearbox.
The pull-type self-aligning separable hydraulic pressure separating of the present invention bearing wheel cylinder unit requires to link with pull type clutch, is a kind ofly with clutch separation, to refer to the normal structural type contacted, the impact noise in the time of can avoiding clutch on-off.Pull-type hydraulic pressure separating bearing can be realized larger dynamic torque with less Separating force, and separation effect is high, and operation easily.Because pull-type hydraulic pressure separating 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 after gearbox one axle and clutch are installed the decentraction existed, adopt automatic aligning device, can effectively automatically adjust alignment error, solve clutch separation and referred to contact with release bearing circumferential fricative noise and the wearing and tearing that end face causes because of the decentraction rotation, and reduce bearing to be subject to the effect of alternating stress radially and the fatigue damage that produces, extended the working life of release bearing.
Pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder unit is combined as a whole clutch slave cylinder and release bearing, adopts fastening screw trip bolt to be connected with gearbox cover.Simplify the structure of gearbox, cancelled the parts such as shifting fork mechanism in gearbox, an axle axle sleeve, clutch slave cylinder.Saved the gearbox space, the noise of having avoided shift fork and release bearing to clash into producing, install do not mate, separating bearing sleeve barrel and an axle axle sleeve rub problems such as making noise.Make gearbox and clutch work more firm, the moment loss is less, and the cut-out engine power is more thorough, operates more easily comfortable.
The present invention and pull type clutch support the use on heavy-duty commercial vehicle, passenger car.Change the linkage structure of traditional gearbox and release bearing, cancelled shifting fork mechanism, clutch slave cylinder, an axle axle sleeve, save 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 rotation into by mechanical transmission, makes and cut off more thorough, the soft noise free of engine power, operates more easily comfortable.
Bearing of the present invention is the ball bearing structure form, and the carrying of bearing be take and born axial force as main, can bear suitable radial force again, adapts to high speed rotating simultaneously.Bearing is pressed angular contact ball bearing carrying design, and meeting axial carrying is main requirement; Pull-type Self-aligning hydraulic pressure separating bearing unit has changed original automobile variable speed box structure, has cancelled the parts such as disengaging yoke, an axle axle sleeve, clutch slave cylinder, has simplified separating mechanism, makes transmission by the mechanical lever transmission, becomes hydraulic transmission.It is more firm to use, safety and comfort; Pull-type Self-aligning hydraulic pressure separating bearing unit does not have original separating bearing sleeve barrel, without coordinating with an axle axle sleeve, therefore there is no the sliding friction of separating bearing sleeve barrel and axle sleeve in the past, does not rub and just there is no the defects such as noise, interference yet.Increasing working life, is 2 to 3 times of general release bearing working life.Pull-type Self-aligning hydraulic pressure separating bearing unit is arranged on gearbox more quick, and the fixing enhancing is installed.The tradition release bearing is installed the impact be subject to the shift fork position, causes installing after not in place, assembling the problems such as abnormal work, affects the normal use of release bearing.Hydraulic pressure separating bearing wheel cylinder unit only need be fixed on cylinder body on gearbox cover, with separation finger, is connected, and only gearbox need be promoted to put in place, just bearing can be fixed.Pull-type Self-aligning hydraulic pressure separating bearing unit has larger use stroke, is generally 5～6 times of travel of clutch.So can fully meet the usage requirement of clutch.Avoided, because of design error between gearbox and engine air, causing the phenomenon that release travel is inadequate.Simultaneously it has automatic adjusting because of clutch separation refer to the to wear and tear change of rear release travel.Pull-type Self-aligning hydraulic pressure separating bearing unit has efficient sealability, can effectively transmit the pressure from clutch master cylinder, and separating action is sensitive soft; noise free; operate more comfort and convenient, motor and gearbox are had to certain protective action, improved vehicle performance.
The accompanying drawing explanation
Below with reference to accompanying drawing, the present invention will be further described:
Fig. 1 is the plan view of the pull-type Self-aligning hydraulic pressure separating of the present invention bearing wheel cylinder unit.
Fig. 2 is the A-A view of the pull-type Self-aligning hydraulic pressure separating of Fig. 1 bearing wheel cylinder unit.
In figure: 1, outer ring, 2, inner ring, 3, retaining ring, 4, separate draw ring, 5, the spiral compression 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, the 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, the second apron.
Embodiment
With reference to accompanying drawing 1～2, pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder unit comprises installs bindiny mechanism, core-regulating mechanism, gear mechanism, hydraulic shunt pump mechanism, dust-proof mechanism and assisting agency; Bindiny mechanism is installed and is formed by clutch connected element and gearbox connected element, comprise and separate draw ring 4, clip 16, retaining ring 3 and spiral compression spring 5; 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, aligning function carrys out homeostasis by the axial force of the compressed rear generation of this part, and aligning spring retaining ring 15 and aligning spring sheet bracing ring 14 have been mainly fixing effects; 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 shunt pump mechanism comprises cylinder body 25, piston 11, the first apron 23, the 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, stops outside greasy dirt, foul to enter pull-type hydraulic pressure separating bearing wheel cylinder inside, causes the abnormal damage of parts, thereby improves the working life of product; Assisting agency comprises filler opening screw, platen 30 and outer cover, during for pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder cellular installation, provides efficient and convenient used, thereby avoiding the user to install not mating causes product extremely to lose efficacy.
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 is used without adding grease again.
Bearing is arranged on piston 11 inside of hydraulic shunt pump mechanism, and outer ring 1 end face coordinates with aligning spring sheet 13, and aligning spring retaining ring 15 is fixed on aligning spring sheet bracing ring 14 in piston 11; Aligning spring retaining ring 15 is fixed in the groove of piston 11 inside, 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 inner internal diameter of piston 11, realize radially center adjusting value.It is fixing that inner ring 2 will separate draw ring 4 by clip 16, clip 16 is stuck in inner ring 2 draw-in grooves, with separating draw ring 4, link together, an end that separates draw ring 4 is fixed on inner ring 2 by clip 16, and the other end that separates draw ring 4 is fixed on clutch separation by aligning spring retaining ring 15 and refers to; Near after inner ring 2 draw-in grooves, being provided with sipes, spiral compression spring 5 is installed in sipes, 5 pairs, spiral compression spring separates draw ring and produces pretightening force, spiral compression spring 5 makes and separates draw ring 4, clip 16, bearing inner race 2 draw-in grooves in Pre strained state, and pull-type hydraulic pressure separating bearing unit is connected on clutch; Pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder unit, by the mounting hole on cylinder body 25, is screwed on gearbox cover.
The second apron 31, cylinder body ring 12, cylinder sleeve 10 and cylinder body back-up ring 9 are arranged in cylinder body 25 head endoporus, and cylinder body back-up ring 9 is stuck in cylinder body 25 head endoporus grooves, fixes cylinder sleeve 10 and the second apron 31.Cylinder sleeve 10 directly is contained in cylinder body 25 endoporus, and with 25 one-tenth Spielpassung of cylinder body, the second apron 31 is contained between cylinder sleeve 10 and cylinder body ring 12, and cylinder body ring 12 is stuck in second groove of cylinder body 25 head, forms the sealing configuration at cylinder body position.
Become respectively the interference fit state between the second apron 31, the first apron 23 and cylinder body 25 and piston 11, form the hydraulic chamber of sealing between the second apron 31 and the first apron 23.During work, cylinder body 25 remains state of rest, and piston 11 slides in cylinder inner bore.The position of the second apron 31 on cylinder body 25 also remains state of rest, and the inner lip of the second apron 31 coordinates with piston 11 outer walls, when piston 11 slides, is dynamic seal (packing); The outer lip of the second apron 31 coordinates with cylinder inner bore, remains state of rest, is static sealing.And the first apron 23 on piston 11 during with the second apron 31 work on cylinder body 25 effect just in time contrary, the inner lip of the first apron 23 coordinates with piston 11 outer walls, the maintenance state of rest is static sealing; The outer lip of the first apron 23 coordinates with cylinder body 25 inwalls, when piston 11 slides, is dynamic seal (packing).
Between cylinder body ring 12 and piston ring 24, distance is the work theory total kilometres of the pull-type fluid bearing wheel cylinder of this Self-aligning unit.When bearing is installed onboard, initial state piston 11 drives apron 23 and moves to cylinder body 25 head positions, approaches cylinder body 25 head 1/3 places, and oil pressure enters in hydraulic chamber and promotes piston 11 drive internal bearings toward cylinder body 25 bottom motions; Bearing is connected to clutch separation and refers to, separation finger drives active friction plate of clutch and is combined with driven friction disk, 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 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 Functions are to stop outside greasy dirt and dust to enter in hydraulic chamber; Piston 11 heads have in the groove of cone angle and platen 30 assemblings, and platen 30 is riveted in groove; On the getting out of a predicament or an embarrassing situation of piston 11 heads, outer dust guard holder 29 and outer dust-proof cover 28 are housed.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 cylinder body 25 head water jackets, and outer dust-proof cover 28 effects are to stop outside greasy dirt, dust to enter 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 threaded connection and is fixed 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 cylinder body 25, guarantees the sealability of hydraulic chamber inside.
Two elastic cylindrical pins 17 are pressed into respectively in cylinder body 25 both sides boss holes.When entrucking, first by pull-type hydraulic pressure separating bearing wheel cylinder cellular installation on gearbox cover; When gearbox and motor are installed, promote the pretightening force promotion platen 30 of gearbox by two elastic cylindrical pins 17, drive piston 11 and bearing assemble on clutch separation refers to; After the clip 16 that bearing is referred to by clutch separation is fixing, gearbox is fixed on motor; Again the clutch master cylinder oil pipe is connected in pull-type Self-aligning fluid bearing wheel cylinder unit by fuel inlet fitting 26; Discharge the air of hydraulic chamber inside, brake fluid is filled with oil pipe and hydraulic chamber, let slip the clutch, oil pressure imports in the hydraulic pressure cavity of fluid bearing unit, pull clutch compressing disc, drive elastic cylindrical pin 17 to release the clutch pedal behind clutch actual separation stroke place by inner ring 2, release bearing is with the elastic force self-return of separation finger, but elastic cylindrical pin 17 is not followed platen 30 returns, to these elastic cylindrical pin 17 functions, completes.
The maximum radial center adjusting value of described pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder unit is 1.2～2.2mm.
The sealability design of described hydraulic shunt pump mechanism meets QC/T77 " hydraulic vehicle braking wheel cylinder technical specifications ", low pressure seal performance: will pass into the positive and negative 7Kp hydraulic pressure of 140Kp in assembly, and pressurize 30 seconds, pressure drop must not be greater than 7Kpa; High pressure sealing performance: pass into Maximum operating pressure in assembly, pressurize 30 seconds, pressure drop is not more than 0.3Mpa; Withstand voltage properties: assembly is passed into to 130% hydraulic pressure of Maximum operating pressure, keep pressure 10 ~ 20 seconds, assembly is without leakage.
Claims (5)
1. a pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder unit, is characterized in that: comprise bindiny mechanism, core-regulating mechanism, gear mechanism, hydraulic shunt pump mechanism, dust-proof mechanism and assisting agency are installed; Bindiny mechanism is installed and is formed by clutch connected element and gearbox connected element, comprise and separate draw ring, clip, retaining ring and spiral compression spring; 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 shunt pump mechanism comprises cylinder body, piston, the first apron, the 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 is arranged on the internal piston of hydraulic shunt pump mechanism, and cycle surface coordinates with the aligning spring sheet, and aligning spring retaining ring is fixed on aligning spring sheet bracing ring in 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 internal piston internal diameter, realize radially center adjusting value; Inner ring will separate draw ring by clip to be fixed, and clip is stuck in the inner ring draw-in groove, with separating draw ring, links together, and an end that separates draw ring is fixed on inner ring by clip, and the other end that separates draw ring is fixed on clutch separation by aligning spring retaining ring and refers to; Near after the inner ring draw-in groove, being provided with sipes, the spiral compression spring is installed in sipes;
Cylinder body and piston form hydraulic chamber, and the first apron, piston ring, piston sleeve and piston stopper are installed on piston, and piston stopper is stuck in the piston base groove, fixes piston sleeve and the first apron; Piston sleeve directly is enclosed within on piston, with piston, becomes Spielpassung, and the first apron is contained between piston sleeve and piston ring, and piston ring is stuck in second groove of piston base, forms the sealing configuration of piston region;
The second apron, cylinder body ring, cylinder sleeve and cylinder body back-up ring are arranged in the cylinder head endoporus, and the cylinder body back-up ring is stuck in cylinder head endoporus groove, fix cylinder sleeve and the second apron; Cylinder sleeve directly is contained in cylinder inner bore, with cylinder body, becomes Spielpassung, and the second apron is contained between cylinder sleeve and 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 in the groove of cone angle and the platen assembling, and platen is riveted in groove; On the getting out of a predicament or an embarrassing situation of piston crown, outer dust guard holder and outer dust-proof cover are housed, an end of outer dust-proof cover is fixed in 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 threaded connection and is fixed in the cylinder body oil inlet hole.
2. pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder according to claim 1 unit, it is characterized in that: Self-aligning hydraulic pressure separating bearing unit, by the mounting hole on cylinder body, is screwed on gearbox cover.
3. pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder according to claim 1 unit, it is characterized in that: become respectively the interference fit state between described the second apron, the first apron and cylinder body and piston, form the hydraulic chamber of sealing between the second apron and the first apron; During work, cylinder body remains state of rest, and piston slides in cylinder inner bore, and the position of the second apron on cylinder body also remains state of rest, and the inner lip of the second apron coordinates with piston outer wall, when piston slides, is dynamic seal (packing); The outer lip of the second apron coordinates with cylinder inner bore, remains state of rest, is static sealing; The inner lip of the first apron coordinates with piston outer wall, keeps state of rest, is static sealing; The outer lip of the first apron coordinates with inboard wall of cylinder block, when piston slides, is dynamic seal (packing).
4. pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder according to claim 1 unit, is characterized in that: in the inner notes of described bearing high temperature-resistant grease, disposable greasing during assembling.
5. pull-type Self-aligning hydraulic pressure separating bearing wheel cylinder according to claim 1 unit, it is characterized in that: described bearing maximum radial center adjusting value is 1.2～2.2mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN102606642A CN102606642A (en) | 2012-07-25 |
| CN102606642B true CN102606642B (en) | 2013-12-11 |
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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 |
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| 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 |
| 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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| JP3728481B2 (en) * | 1997-01-31 | 2005-12-21 | 光洋精工株式会社 | Hydraulic clutch breaker |
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| GB1277128A (en) * | 1968-11-25 | 1972-06-07 | Hermann E Mueller | Pressure member for clutches |
| CN2786354Y (en) * | 2005-01-05 | 2006-06-07 | 南京轴承有限公司 | Self-aligning pull-type clutch release bearing unit |
| CN201696521U (en) * | 2010-06-12 | 2011-01-05 | 杭州三江轴承有限公司 | Hydraulic clutch separation bearing on automobile clutch |
| CN202012584U (en) * | 2011-04-19 | 2011-10-19 | 常州光洋轴承股份有限公司 | Self-aligning hydraulic clutch release bearing assembly used for motor vehicles |
| CN202510583U (en) * | 2012-04-11 | 2012-10-31 | 南京轴承有限公司 | Pull-type self-aligning hydraulic release bearing wheel cylinder unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102606642A (en) | 2012-07-25 |
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