CN110005731B - Hydraulic release bearing with displacement self-checking function - Google Patents
Hydraulic release bearing with displacement self-checking function Download PDFInfo
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- CN110005731B CN110005731B CN201910236226.4A CN201910236226A CN110005731B CN 110005731 B CN110005731 B CN 110005731B CN 201910236226 A CN201910236226 A CN 201910236226A CN 110005731 B CN110005731 B CN 110005731B
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- release bearing
- displacement
- hydraulic release
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 81
- 238000001514 detection method Methods 0.000 claims abstract description 45
- 230000006698 induction Effects 0.000 claims abstract description 22
- 239000003381 stabilizer Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 26
- 238000007789 sealing Methods 0.000 description 11
- 239000010720 hydraulic oil Substances 0.000 description 9
- 230000009471 action Effects 0.000 description 6
- 230000005684 electric field Effects 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Classifications
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/066—Control of fluid pressure, e.g. using an accumulator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/102—Actuator
- F16D2500/1026—Hydraulic
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/104—Clutch
- F16D2500/10406—Clutch position
- F16D2500/10412—Transmission line of a vehicle
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/104—Clutch
- F16D2500/10443—Clutch type
- F16D2500/1045—Friction clutch
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a hydraulic release bearing with a displacement self-checking function, which comprises a hydraulic release bearing, wherein one side of the hydraulic release bearing is provided with a displacement detection device for detecting axial displacement of the bearing, the displacement detection device adopts a passive Hall displacement detection device, the Hall displacement detection device comprises a magnetic movable part, a fixed induction part and a connector which is in circuit connection with the fixed induction part, which are oppositely arranged, and one end of the fixed induction part, which is provided with a threaded boss, is fastened on the outer side of a cylinder body of the hydraulic release bearing through a fixing screw; the magnetic movable part and the bearing shaft keep moving synchronously; the connector is connected with the oil pipe joint in parallel. The invention realizes the real-time acquisition and monitoring of the clutch engagement state by the manual-automatic integrated or automatic vehicle-stopping type upper transmission system control unit. Meanwhile, the invention has no influence on the structural space of the transmission system and is beneficial to accurately controlling the end surface position of the hydraulic release bearing.
Description
Technical Field
The invention relates to a vehicle clutch control mechanism component, in particular to a hydraulic release bearing with a displacement self-checking function.
Background
The manual transmission type is generally characterized in that the clutch is controlled by manpower to be engaged and disengaged, the clutch pedal is controlled for a long time to cause fatigue of a driver, and the power transmission is controlled by a manual-automatic integrated or automatic transmission type hydraulic release bearing through a transmission system control unit to perform automatic mechanical action. The hydraulic release bearing with the displacement self-checking function can provide real-time travel of the release bearing and transmission torque of the clutch for the control unit, and the hydraulic release bearing contributes to comprehensive evaluation of the running state of the vehicle by the control unit, so that the transmission system control unit reasonably controls the power transmission of the vehicle, stable starting of the vehicle is realized, gear shifting is smooth, transition of acceleration and deceleration and gear shifting is stable, and the driving comfort of the vehicle is improved.
Disclosure of Invention
In view of the above technical problems, the present invention aims to provide a hydraulic release bearing which can be used for detecting the displacement of the end face of the bearing in a manual-automatic integrated or automatic transmission type. The displacement detection device can be located at the correct installation position through the fixing screws, the grids extending out of the support legs and the oil pipe joints and the buckles, the installation process is convenient and fast, the positioning is accurate, and the self-checking response is fast.
The invention is realized by adopting the following technical scheme:
a hydraulic release bearing with a displacement self-checking function comprises a hydraulic release bearing, wherein one side of the hydraulic release bearing is provided with a displacement detection device for detecting axial displacement of the bearing, the displacement detection device adopts a passive Hall displacement detection device, the Hall displacement detection device comprises a magnetic movable part, a fixed induction part and a connector in circuit connection with the fixed induction part, which are oppositely arranged, and one end of the fixed induction part, which is provided with a threaded boss, is fastened on the outer side of a cylinder body of the hydraulic release bearing through a fixing screw; the magnetic movable part and the bearing shaft keep moving synchronously; the connector is connected with the oil pipe joint in parallel through a buckle and a part, provided with a grid, on the oil pipe joint of the hydraulic release bearing, and the position of the connector is adjusted through a sliding groove in the grid.
Further, the magnetic movable part comprises a magnetic sliding block, the fixed induction part comprises an induction surface, and the magnetic sliding block and the induction surface are kept parallel and synchronously move along the bearing along the direction parallel to the sliding axis of the bearing.
Furthermore, vertical through grooves are symmetrically formed in two sides of the magnetic sliding block, slots parallel to the induction surface are formed in the outer wall of the cylinder body, and the magnetic sliding block is in sliding fit with the slots through the through grooves.
Furthermore, the upper end of the magnetic slider is provided with an arc-shaped hanging ring, a first check ring is arranged between a bearing and a spring in the hydraulic release bearing, the outer peripheral wall of the first check ring is provided with an outer circumferential groove, and the arc-shaped hanging ring is embedded into the outer circumferential groove to drive the magnetic slider and the bearing to synchronously move.
Further, the moving range of the magnetic slider is consistent with the moving range of the bearing.
Furthermore, four needles are arranged at the output end of the connector, wherein two needles are used for collecting analog signals, and the other two needles are used for connecting an external 5V power supply to supply power to the device.
Further, the voltage range of the output characteristic curve of the Hall displacement detection device is 0.5-4.5V, and the corresponding displacement measurement range is larger than 25 mm.
Further, the bottom of response face is provided with the first stabilizer blade that stretches out and the stabilizer blade is stretched out to the second, the cylinder body is provided with and is located the first stabilizer blade that stretches out with the second stretches out between the stabilizer blade and with the first extension that stretches out the mutual embedding of stabilizer blade, be used for guaranteeing mutually perpendicular between detection device's installation error and the mount pad plane of response face and cylinder body.
Furthermore, convex and concave parts which are embedded into each other are arranged between the connector and the oil pipe joint, so that looseness is prevented.
Compared with the prior art, the invention has the following beneficial effects:
the displacement detection device and the hydraulic release bearing provided by the invention can be well integrated with each other, the installation is convenient, the displacement detection device is accurate in positioning and quick in self-checking response, and the displacement detection device has the characteristics of high precision, low time delay, good linearity and the like, and meanwhile, the measurement process is contactless, has no abrasion, has clear output waveform, and has a wider working temperature range due to compensation and protection measures. The displacement detection device does not additionally occupy other spaces in the gearbox, and is favorable for accurately controlling the end face position of the hydraulic release bearing. In addition, the output waveform can be displayed by an oscilloscope for detection or debugging. The clutch engagement state real-time acquisition and monitoring of the transmission system control unit on the manual-automatic integrated or automatic car-stopping type are realized.
Drawings
The present invention will be described in detail with reference to the embodiments shown in fig. 1 to 10. The figures show:
FIG. 1 is an isometric view of a hydraulic release bearing with a self-checking function for displacement according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at F;
FIG. 3 is an isometric view from the reverse side of FIG. 1;
FIG. 4 is a top view of an end face side of a hydraulic release bearing according to an embodiment of the invention;
FIG. 5 is a cross-sectional view taken along section line A-A of FIG. 4;
FIG. 6 is a cross-sectional view taken along section line B-B of FIG. 4;
FIG. 7 is a cross-sectional view taken along section line C-C of FIG. 4;
FIG. 8 is a schematic view of a displacement detecting device according to an embodiment of the present invention;
FIG. 9 is a schematic view of a magnetic slider according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a characteristic curve of the output voltage of the displacement detecting device according to the embodiment of the invention, which varies with the displacement input signal.
Shown in the figure:
1-a bushing; 2-cylinder body; 3-a third O-ring; 4-a first O-ring; 5-rotating the oil seal; 6-a spring; 7-a hydraulic working chamber; 8-a first collar; 9-a second retainer ring; 10-T type sliding sleeves; 11-a second O-ring; 12-a first snap spring; 13-tubing joints; 14-buckling; 15-rubber plugging; 16-clamping a second clamp spring; 17-a protective cover; 18-a set screw; 19-a bearing; 20-sliding axis; 21-a first snap ring; 22-a second snap ring; 23-a sealing ring; 24-hydraulic oil gallery; 25-displacement detection means; 26-a threaded boss; 27-a first projecting foot; 28-a second projecting foot; 29-a connector; 30-a sensing surface; 31-a magnetic slider; 311-arc suspension loop; 312-through slot.
Detailed Description
The invention is further described below with reference to corresponding and specific examples.
As shown in fig. 1, a hydraulic release bearing with a displacement self-checking function comprises a hydraulic release bearing and is characterized in that one side of the hydraulic release bearing is provided with a displacement detection device 25 for detecting axial displacement of the bearing, the displacement detection device 25 adopts a passive hall displacement detection device, the hall displacement detection device comprises a magnetic movable part, a fixed induction part and a connector in circuit connection with the fixed induction part, which are oppositely arranged, and one end of the fixed induction part, which is provided with a threaded boss, is fastened on the outer side of a cylinder body of the hydraulic release bearing through a fixing screw; the magnetic movable part and the bearing shaft keep moving synchronously; the connector is connected side by side with the oil pipe joint by means of the snap 14 and the part of the oil pipe joint with the grid of the hydraulic release bearing, and the position of the connector is adjusted by means of the sliding grooves on the grid.
The end face of the hydraulic release bearing is the upper surface of the bearing 19 at the position shown in the figure, and the hydraulic release bearing is mainly composed of the self-aligning bearing 19, the cylinder block 2, the oil pipe joint 13, and the displacement detecting device 25 including the magnetic slider 31, and when the hydraulic release bearing is assembled, the allowable radial play limit of the bearing 19 is within r0.4mm, and the inner and outer walls of the cylinder block 2 must be lubricated by sufficient grease.
The cylinder block 2 is constructed so that other parts of the hydraulic release bearing can be properly mounted. The mounting seat of the cylinder body 2 is provided with three through holes, and each through hole is provided with a bushing 1 to facilitate the positioning and mounting of the hydraulic release bearing in the gearbox. The displacement detecting device 25 is fixed on the mounting seat of the cylinder 2 by the fixing screw 18 through the screw boss 26 on one end of the sensing surface 30.
As shown in fig. 2, the displacement detecting device 25 is in contact with the cylinder 2 at the other end of the sensing surface 30 in the circle of the two-dot chain line, and the extending portion of the cylinder 2 at this position is located between the first extending support 27 and the second extending support 28 of the displacement detecting device 25, and is embedded into the first extending support 27, so that the displacement detecting device 25 can be correctly positioned outside the cylinder 2 by means of the two extending supports, and the mounting error of the detecting device and the mutual perpendicularity between the sensing surface 30 and the mounting seat plane of the cylinder 2 are ensured, so that the detecting device is located at the correct mounting position, and the mounting accuracy is ensured.
As shown in FIG. 3, in another isometric view of a hydraulic release bearing with a self-checking function for displacement, a second extending leg 28 of the displacement detection device 25 contacts with the bottom surface of the cylinder body 2, a sensing surface 30 of a sensor of the displacement detection device is opposite to an opening on the wall surface of the cylinder body 2, a connector 29 of the displacement detection device 25 is connected with the grid section of the oil pipe joint 13 side by side through a buckle 14, and a rubber plug 15 is arranged outside the connector 29 and the oil pipe joint 13.
The oil pipe joint 13 is inserted into a corresponding position on an extending pipe part of the hydraulic working cavity 7 of the cylinder body 2 through the first clamp spring 12 and is connected and positioned with the extending pipe of the hydraulic working cavity 7, the input end of the oil pipe joint 13 is provided with a protective cover 17, and the protective cover is inserted into the corresponding position of the oil pipe joint 13 through the second clamp spring 16 and is sleeved on the oil pipe joint 13.
As shown in fig. 4, the displacement detecting device 25 and the hydraulic release bearing are positioned at a plurality of positions, the through groove 312 of the magnetic slider 31 is fitted into an open position corresponding to the through groove at one position on the wall surface of the cylinder 2, the open position is provided with a slot parallel to the sensing surface 30, and the magnetic slider 31 is slidably fitted into the slot through the through groove 312.
In the present embodiment, as shown in fig. 5, the cut-away portion is the arrangement of the cylinder inner part and the displacement detecting device 25 relative to the hydraulic release bearing, which is coupled with the seal ring 23 by the first snap ring 21 and the second snap ring 22 to form a whole, and slides along with the sliding of the seal ring, and the spring 6 is embedded in the annular groove provided on the cylinder body 2 and provides the necessary pre-thrust to the bearing 19 through the first retainer ring 8. The mounted position of bearing 19 is guaranteed by first snap ring 21, second snap ring 22, sealing washer 23, cylinder body 2, spring 6 and first retaining ring 8 jointly, T type sliding sleeve 10 arranges in the cylinder body inboard, through third O type circle 3, first O type circle 4 to its radial positioning, guarantees that the tip of T type sliding sleeve stretches out to bend and can block and die in the cylinder body bottom, and above bearing installation part makes bearing and T type sliding sleeve 10 have better axiality, ensures the centering performance of bearing.
The second snap ring 22 is embedded into the groove of the first snap ring 21 and abuts against the surface of the inner ring of the release bearing through the lower plane of the second snap ring, the first snap ring 21 is sleeved into the head of the sealing ring 23, wherein the tail part of the first snap ring is bent inwards along the radial direction by utilizing a ring groove with a wedge-shaped section at the head of the sealing ring and then is completely tightened on the T-shaped sliding sleeve, and a closed annular gap is formed between the two snap rings and the inner ring of the release bearing.
The sealing ring 23 can slide on the T-shaped sliding sleeve 10 smoothly along the axial direction, the cylinder body 2, the T-shaped sliding sleeve 10 and the sealing ring 23 form the hydraulic working cavity 7, and hydraulic oil is conveyed to the hydraulic working cavity through the hydraulic oil duct 24. The working volume of the hydraulic working chamber is changed correspondingly with the change of the position of the clutch pedal in the installation state of the hydraulic release bearing, and the position of the sealing ring under the combined action of the spring 6 and the hydraulic oil is also changed correspondingly. The head of the T-shaped sliding sleeve 10 is provided with an annular groove with a trapezoidal section, a second retaining ring 9 is embedded into the groove, the second retaining ring 9 is used for restricting the outward limit position of the sealing ring, and the oil in the hydraulic working cavity is prevented from leaking or overflowing at the limit position.
The spring 6 indirectly supports the lower end face of the inner ring of the bearing 19 through the first check ring 8, the lower end face of the inner ring of the bearing 19 is fixed together with a sealing ring 23 of a machined aluminum alloy part through two snap rings, and the second check ring 9 limits the outward limit position of the sealing ring 23 through a trapezoid ring groove located at the head of the T-shaped sliding sleeve. In practical implementation, the bearing 19 has an extreme compression height along the sliding axis 20 of greater than 40mm and a stroke of greater than 20 mm.
An arc-shaped hanging ring 311 is arranged at the upper end of the magnetic sliding block 31, the arc-shaped hanging ring 311 is embedded in the outer circumferential groove of the first retainer ring 8, and the sliding direction of the magnetic sliding block 31 is parallel to the induction surface 30. In addition, a rotary oil seal 5 is arranged at the bottom of the T-shaped sliding sleeve 10 to prevent hydraulic oil from leaking from the side.
As shown in fig. 6, in the present embodiment, the cut-away portion is the arrangement of the hydraulic oil injection portion, the oil pipe joint 13 is inserted into the hydraulic oil passage 24 of the cylinder body 2, the oil pipe joint 13 and the cylinder body 2 are aligned for being inserted into the slot of the first clamp spring 12, and then the first clamp spring 12 is inserted to complete the connection between the oil pipe joint 13 and the cylinder body 2; and after the protective cover 17 is completely inserted into the oil pipe joint 13, the second clamp spring 16 is inserted to complete the connection between the protective cover 17 and the oil pipe joint 13, wherein the first clamp spring 12 and the second clamp spring 16 are both rubber pieces. Two second O-rings 11 are arranged at the insertion end of the oil pipe joint 13 and play a role in sealing and positioning. The hydraulic oil passage is communicated with the hydraulic working cavity 7.
In the present embodiment, as shown in fig. 7, the cut portion is a positional relationship between the connector 29 and the oil pipe joint 13, the two are fixed side by the snap 14, and the male and female portions are fitted into each other between the connector 29 and the oil pipe joint 13 to prevent looseness, and the rubber plug 15 is disposed outside the snap 14.
As shown in fig. 8, the displacement detecting device 25 is connected to the left connector 29 and the right stationary sensing member through four wires, and the stationary sensing member is screwed to the screw boss 26 through the fixing screw 18.
As shown in fig. 9, the magnetic slider 31 has two distinct characteristics of an arc-shaped hanging ring 311 and a through groove 312, after the magnetic slider 31 is inserted into the slot where the cylinder 2 is parallel to the sensing surface 30 of the detection device, the displacement of the bearing 19 when the displacement detection device 25 operates is reflected on the magnetic slider 31 through the first retaining ring 8, once the position of the magnetic slider 31 changes, the magnetic field generated by the magnetic slider also changes, and the output voltage of the corresponding displacement detection device 25 also changes accordingly.
As shown in fig. 10, the left half of the diagram is a characteristic curve of the output voltage and the positional relationship of the displacement detection device 25, the abscissa U is a voltage, the magnetic slider 31 has a magnet built therein, and the position of the pole of the magnet S, N is as shown in the diagram, and the output voltage of the displacement detection device 25 ranges from 0.5V to 4.5V in all the movement ranges corresponding to the magnet center line. The ordinate X is the displacement, which corresponds to the relative position of the magnet in the right half of the diagram with respect to the sensing surface of the sensing device 25, line a is the reference line, line A, B is a line between which the measurement range is greater than 25mm, line C is the center line of the relative A, B line, which is about 10mm from a reference plane D on the sensing device.
The voltage output by the Hall displacement detection device changes along with the magnetic field intensity change of the magnetic slide blocks at different positions at the inductor, the voltage is in direct proportion to the magnetic field intensity, and the Hall displacement detection device is suitable for occasions with medium and low frequency changes of the magnetic field intensity. The output voltage is usually of a small order of magnitude, typically a few millivolts, and is amplified by an amplifier in an integrated circuit to a size detectable by a conventional multimeter or the like.
The detection principle of the displacement detection device for detecting the end face displacement of the hydraulic bearing or the position of the magnetic slide block detected by the sensor is that Hall elements in the device are utilized to output voltage under certain magnetic field intensity, the Hall elements are provided with four leading-out terminals, two of the four leading-out terminals are input ends of bias current of the Hall elements, the other two are output ends of the Hall voltage, and the bias current is under the action of the magnetic field in the Hall elementsThe sub-charges will move to the polar plate at the side where the magnetic field force of the output end points, and the magnetic field force or Lorentz force F suffered by the electronsBAs described by the following formula:
FB＝q*B*v （1）
in the formula: q is the electron charge amount, B is the magnetic field strength, and v is the average velocity of charge movement.
Electrons are accumulated on the side polar plate, so that an electric field strength which is gradually enhanced is formed between the two polar plates at the output end, and the electric field force F borne by the electronsEAnd cell strength E is described by the following formula:
FE＝q*E （2）
E＝U/d （3）
in the formula: u is Hall voltage, and d is the distance between the two polar plates of the output end.
The formed electric field acts on the moving electrons at the same time, the direction of the electric field is always opposite to that of the magnetic field, when the electric field force and the magnetic field force applied to the electrons are the same, the electrons cannot continue to move towards the polar plate, and at the moment, stable electric field intensity is formed between the polar plate at the output end.
Further, equation (1) and equation (2) are made equal to obtain the relation between the hall voltage and the magnetic field strength:
U＝B*v*d （4）
according to the formula (4), the Hall voltage and the magnetic field intensity are in a linear relation, namely the Hall voltage changes in proportion to the magnetic field intensity, so that the magnetic field distribution is changed after the magnetic slider generates displacement, and the output voltage correspondingly changes.
The hydraulic release bearing is correctly arranged on a shaft in the gearbox, meanwhile, the hydraulic system is in a normal working state, the end face of the hydraulic release bearing is abutted against the small end of the diaphragm spring of the clutch, and the spring generates a certain pre-thrust to act on the release bearing through the first check ring. When the system sends a separation instruction, hydraulic oil in the cylinder pushes the separation bearing to separate the clutch inner pressure disc from the driven disc friction plate; when the system sends a joint command, the system hydraulic system releases pressure to return oil in the hydraulic working chamber to the oil tank, and accordingly the release bearing returns to the starting position under the action of the diaphragm spring. In this engagement-disengagement cycle, the displacement detecting device 25 constantly detects the displacement of the bearing, and feeds back the displacement data to the drive train control unit in real time, and the control unit performs corresponding displacement control of the hydraulic release bearing in accordance with the current driving state of the vehicle, the next desired driving state, and the displacement of the release bearing.
The displacement self-checking function of the invention is realized by the detection device which can be used for obtaining the displacement data of the end surface of the bearing, so that the obtained real-time data, the current running state of the vehicle and the judgment of the next action to be executed by the electronic control system on the vehicle are controlled properly by the control unit of the transmission system to execute the engaging and disengaging actions of the clutch, and the invention can be applied to the technologies such as automatic start and stop, etc.
The foregoing is only illustrative of the present invention. The scope of the invention is not limited thereto. Any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present disclosure are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides a hydraulic release bearing with displacement self-checking function which characterized in that: a displacement detection device for detecting the axial displacement of the bearing is arranged on one side of the hydraulic release bearing, the displacement detection device adopts a passive Hall displacement detection device, the Hall displacement detection device comprises a magnetic movable part, a fixed induction part and a connector in circuit connection with the fixed induction part, which are oppositely arranged, and one end of the fixed induction part, which is provided with a threaded boss, is fastened on the outer side of a cylinder body of the hydraulic release bearing through a fixing screw; the magnetic movable part and the bearing keep synchronous movement; the connector is connected with the oil pipe joint in parallel through a buckle and a part with a grid on the oil pipe joint of the hydraulic release bearing, and the position of the connector is adjusted through a sliding groove on the grid; the magnetic movable part comprises a magnetic sliding block, the fixed induction part comprises an induction surface, and the magnetic sliding block and the induction surface are kept parallel and synchronously move along the sliding axis direction parallel to the bearing along with the bearing; vertical through grooves are symmetrically formed in two sides of the magnetic sliding block, inserting grooves parallel to the induction surface are formed in the outer wall of the cylinder body, and the magnetic sliding block is in sliding fit with the inserting grooves through the through grooves; an arc-shaped hanging ring is arranged at the upper end of the magnetic sliding block, a first check ring is arranged between a bearing and a spring in the hydraulic separation bearing, an outer circumferential groove is formed in the outer circumferential wall of the first check ring, and the arc-shaped hanging ring is embedded in the outer circumferential groove to drive the magnetic sliding block and the bearing to move synchronously; the mounting seat of the cylinder body is provided with three through holes, and each through hole is provided with a bushing so as to facilitate the positioning and mounting of the hydraulic release bearing in the gearbox;
the thread boss on one end of the induction surface of the displacement detection device is fixed on the mounting seat of the cylinder body through a fixing screw; displacement detection device has the contact in response face other one end and cylinder body, the bottom of response face is provided with the first stabilizer blade and stretches out the stabilizer blade with the second, the cylinder body stretches out between the stabilizer blade at the first stabilizer blade that stretches out and the second that displacement detection device is in this position, and with the first stabilizer blade of stretching out imbeds each other, make displacement detection device can rely on two to stretch out the stabilizer blade and pinpoint in the cylinder body outside, guarantee mutually perpendicular between detection device's installation error and the mount pad plane of response face and cylinder body, make detection device be in exact mounted position, ensure the installation accuracy.
2. The hydraulic release bearing with displacement self-checking function according to claim 1, characterized in that: the moving range of the magnetic slide block is consistent with that of the bearing.
3. The hydraulic release bearing with displacement self-checking function according to claim 1, characterized in that: the output end of the connector is provided with four needles, wherein two needles are used for collecting analog signals, and the other two needles are used for connecting an external 5V power supply to supply power for the device.
4. The hydraulic release bearing with displacement self-checking function according to claim 1, characterized in that: the voltage range of the output characteristic curve of the Hall displacement detection device is 0.5-4.5V, and the corresponding displacement measurement range is larger than 25 mm.
5. The hydraulic release bearing with displacement self-checking function according to any one of claims 2 to 4, characterized in that: and convex and concave parts which are embedded into each other are arranged between the connector and the oil pipe joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236226.4A CN110005731B (en) | 2019-03-27 | 2019-03-27 | Hydraulic release bearing with displacement self-checking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236226.4A CN110005731B (en) | 2019-03-27 | 2019-03-27 | Hydraulic release bearing with displacement self-checking function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110005731A CN110005731A (en) | 2019-07-12 |
| CN110005731B true CN110005731B (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910236226.4A Expired - Fee Related CN110005731B (en) | 2019-03-27 | 2019-03-27 | Hydraulic release bearing with displacement self-checking function |
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| CN112013754B (en) * | 2020-09-01 | 2022-03-15 | 瑞立集团瑞安汽车零部件有限公司 | System and method for detecting main shaft displacement of non-contact clutch booster |
| CN112461109B (en) * | 2020-11-10 | 2022-04-05 | 中国北方车辆研究所 | On-line measuring device for abrasion loss of gear shifting sliding block of gear shifting control mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006014024U1 (en) * | 2006-09-08 | 2006-11-09 | Fte Automotive Gmbh | Clutch release bearing for hydraulically operated unit, comprises magnetic element positioned tolerance free but radial movable inside groove |
| DE102011102813A1 (en) * | 2010-06-21 | 2011-12-22 | Schaeffler Technologies Gmbh & Co. Kg | Kupplungszentralausrücker |
| DE102012212633A1 (en) * | 2011-08-03 | 2013-02-07 | Schaeffler Technologies AG & Co. KG | Hydraulic cylinder, in particular for a clutch actuator in a motor vehicle |
| DE102014208331A1 (en) * | 2014-05-05 | 2015-11-05 | Schaeffler Technologies AG & Co. KG | Release bearing assembly and clutch with a release bearing assembly |
| CN104180990B (en) * | 2014-09-19 | 2017-11-17 | 集瑞联合重工有限公司 | The release travel method of testing of clutch release bearing structure and clutch |
| FR3052832A3 (en) * | 2016-06-21 | 2017-12-22 | Renault Sas | CLUTCH CONTROL SYSTEM HAVING A HYDRAULIC CONCENTRIC RECEPTOR |
| DE102017117279B3 (en) * | 2017-07-31 | 2018-07-26 | Schaeffler Technologies AG & Co. KG | Sensor integration for a clutch release |
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