CN110260025B - Proportional electromagnetic valve for controlling clutch - Google Patents
Proportional electromagnetic valve for controlling clutch Download PDFInfo
- Publication number
- CN110260025B CN110260025B CN201910469944.6A CN201910469944A CN110260025B CN 110260025 B CN110260025 B CN 110260025B CN 201910469944 A CN201910469944 A CN 201910469944A CN 110260025 B CN110260025 B CN 110260025B
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- valve core
- valve
- annular groove
- groove
- supporting sleeve
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- 239000007788 liquid Substances 0.000 claims description 29
- 238000010992 reflux Methods 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000004512 die casting Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000979 retarding effect Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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
- F16D48/02—Control by fluid pressure
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
Abstract
The present invention relates to a clutch control device, and more particularly, to a proportional solenoid valve for controlling a clutch; the technical problems of high requirement on the die casting precision of the valve plate in the existing proportional electromagnetic valve, complex manufacturing process for forming an oil groove on the valve plate and high cost are solved. The invention relates to a proportional electromagnetic valve for controlling a clutch, which comprises an electromagnetic driving device and a valve assembly; the electromagnetic driving device comprises an armature, an armature tie rod, a reset spring element and at least two magnetic coils; the valve assembly comprises a valve plate, a valve core supporting sleeve and a valve core which are sequentially sleeved from outside to inside; a reset spring is arranged between the right end of the valve core and the valve plate; the outer circle of the valve core supporting sleeve is matched with the inner hole of the valve plate, and the inner hole of the valve core supporting sleeve is matched with the outer circle of the valve core; the valve core supporting sleeve is sequentially provided with a first annular groove, a second annular groove, a third annular groove and a fourth annular groove along the axial direction; the bottom of the first annular groove is provided with a backflow hole, and the outer wall of the valve core supporting sleeve is provided with a backflow channel communicated with the third annular groove and the backflow hole.
Description
Technical Field
The present invention relates to a clutch control device, and more particularly, to a proportional solenoid valve for controlling a clutch.
Background
With the popularity of automatic transmission vehicles, the application of control clutches is becoming more and more widespread. The clutch is controlled to be opened or closed by an electrohydraulic system to realize automatic speed change or automatic gear shifting. The electrohydraulic system generally controls the opening or closing of the clutch by controlling the oil quantity of an oil way through a proportional electromagnetic valve.
Existing proportional solenoid valves generally include a solenoid drive device and a valve assembly, wherein the solenoid drive device includes a solenoid coil, an armature tie rod; the valve assembly comprises a valve plate, a valve core arranged in the valve plate and a reset spring arranged at the bottom of the valve core.
The valve plate is provided with a liquid inlet, a liquid outlet and an oil duct, wherein the oil duct is arranged in the side wall of the valve plate; the liquid inlet hole is communicated with an external hydraulic station and the inner cavity of the valve plate, the liquid outlet is communicated with the inner cavity of the valve plate and the outer part of the valve plate, and the oil duct is communicated with the inner cavity of the valve plate and the liquid inlet of the clutch.
When the electromagnetic valve works, the electromagnetic coil is electrified to generate electromagnetic force, and the electromagnetic force acts on the armature to enable the armature to move, so that the armature tie rod is driven to push the valve core, and the reset spring connected to the valve core is compressed. Because the electromagnetic force pushing the armature to move is in direct proportion to the current passing through the electromagnetic coil, the current can directly control the stroke of the valve core, thereby controlling the flow of the oil liquid passage in the valve body and the opening and closing state of the oil passage.
Because valve plates in the existing proportional solenoid valve are mostly cast, the requirement on die casting precision is high, a plurality of oil grooves are formed in the valve plates, and the manufacturing process is complex and high in cost.
Disclosure of Invention
The invention provides a proportional electromagnetic valve for controlling a clutch, which aims to solve the technical problems of high requirement on valve plate die casting precision in the existing proportional electromagnetic valve, complex manufacturing process and high cost caused by the fact that an oil groove is formed in a valve plate.
The technical scheme of the invention is as follows:
a proportional solenoid valve for controlling a clutch, comprising a solenoid drive and a valve assembly; the electromagnetic driving device comprises an armature, an armature tie rod, a reset spring element and at least two magnetic coils; the special feature is that:
the valve assembly comprises a valve plate, a valve core supporting sleeve and a valve core which are sequentially sleeved from outside to inside; a reset spring is arranged between the right end of the valve core and the valve plate; the outer circle of the valve core supporting sleeve is matched with the inner hole of the valve plate, and the inner hole of the valve core supporting sleeve is matched with the outer circle of the valve core;
the inner wall of the valve core supporting sleeve is provided with a first annular groove, a second annular groove, a third annular groove and a fourth annular groove in sequence along the axial direction; the first annular groove is used as a reflux groove; the second ring groove is used as a supply groove; the third ring groove is used as a control groove; the fourth ring groove is used as a depressurization groove; the second annular groove, the third annular groove and the fourth annular groove are partially communicated with the side wall of the valve core supporting sleeve;
the first ring groove, the second ring groove, the third ring groove and the fourth ring groove can be sequentially arranged from left to right or from right to left, specifically:
the fourth annular groove is close to the right end of the valve core supporting sleeve; the valve core comprises a valve head and a three-section valve core; the diameter of the upper section of the valve core is smaller than that of the middle section of the valve core; a connecting part with the diameter smaller than that of the valve core is arranged between two adjacent sections of valve cores, wherein the connecting part between the middle section of the valve core and the lower section of the valve core is three sections, two sections positioned at two ends are cylinders, the middle transition section is a round table, and the diameter of the cylinder close to the middle section of the valve core is smaller than that of the cylinder at the other end;
or the fourth annular groove is close to the left end of the valve core supporting sleeve; the valve core comprises a valve head and a three-section valve core; the outer diameter of the lower section of the valve core is smaller than the diameter of the middle section of the valve core; a connecting part with the diameter smaller than that of the valve core is arranged between two adjacent valve cores, wherein the connecting part between the upper section of the valve core and the middle section of the valve core is three sections, two sections positioned at two ends are cylinders, the middle transition section is a round table, and the diameter of the cylinder close to the middle section of the valve core is smaller than that of the cylinder at the other end;
the bottom of the first annular groove is provided with a backflow hole, and the outer wall of the valve core supporting sleeve is provided with a backflow channel communicated with the third annular groove and the backflow hole;
the side wall of the valve plate is provided with a liquid inlet, a liquid outlet and an oil duct; the liquid inlet is communicated with the second annular groove; the liquid outlet is communicated with the fourth annular groove; the inlet of the oil duct is communicated with the third annular groove, and the outlet of the oil duct is communicated with the liquid inlet of the clutch;
when the valve core is positioned at the left limit position, the second annular groove is communicated with the third annular groove; after flowing through the second annular groove and the third annular groove in sequence, one part of oil passes through an oil duct in the valve plate and pushes the clutch, and the other part of oil enters the first annular groove through a backflow channel and a backflow hole;
when the valve core is at the right limit position, the third annular groove is communicated with the fourth annular groove; and part of oil in the third annular groove and the fourth annular groove flows out through the oil outlet of the valve plate, and the other part of oil enters the first annular groove through a backflow channel and a backflow hole.
Further, in order to balance the pressure of the inner cavity and the outer cavity of the valve core supporting sleeve and the pressure of the inner cavity and the outer cavity of the valve core, the stability of the valve core is improved, the left end of the valve core supporting sleeve is provided with a pressure discharge groove, and the right end of the valve core supporting sleeve is provided with a first pressure balance groove; the right end of the valve core is provided with a second pressure balance groove.
Further, in order to balance the pressure and increase the stability of the valve core, the transition surface of each cylinder and the valve core section is provided with a circular arc-shaped buffer groove; the depth of the slow flow groove is 3mm.
Further, in order to avoid the valve core from being offset due to uneven oil distribution or self gravity, a group of annular pressure reducing grooves are formed in the outer circular surfaces of the upper section, the middle section and the lower section of the valve core.
Further, the number of the annular pressure reducing grooves in each group is three, and the distance between two adjacent annular pressure reducing grooves is greater than or equal to 1mm.
Further, the first ring groove has a width of 14mm to 15mm and a depth of 3mm to 4mm.
Further, the diameter of the reflow hole is 0.6-1 mm.
Further, the included angle between the backflow channel and the axis of the valve core supporting sleeve is 45 degrees.
Further, a spring limiting seat is arranged in the valve plate.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the valve core supporting sleeve is arranged between the valve plate and the valve core, and the first annular groove, the second annular groove, the third annular groove and the fourth annular groove are formed on the valve core supporting sleeve, so that the requirement on the die casting precision of the valve plate is reduced, the manufacturing process of the valve plate is simplified, and the production cost is reduced.
2. The invention sets a reflux hole at the bottom of the reflux groove, and sets a reflux channel connecting the first reflux groove and the reflux hole at the outer wall of the valve core supporting sleeve, the valve core is divided into three sections, wherein the diameters of two valve core sections close to the reflux groove are different, and the force in the same direction as the thrust direction of the electromagnetic device or the same direction as the spring force can be provided according to the actual requirement.
3. The left end of the valve core supporting sleeve is provided with the pressure discharge groove, the right end of the valve core supporting sleeve is provided with the first pressure balancing groove, and the right end of the valve core is provided with the second pressure balancing groove, so that the pressures of the inner cavity and the outer cavity of the valve core supporting sleeve and the inner cavity and the outer cavity of the valve core can be balanced, the stability of the valve core is improved, and the noise is reduced.
4. According to the invention, the arc-shaped slow grooves are arranged on the transition surfaces of each cylinder of the valve core connecting part and the corresponding valve core section, so that the pressure of the valve core can be balanced, and the stability of the valve core is improved.
5. The valve core supporting sleeve and the valve core can be parts produced in the same batch, and the blanks are bar materials, so that the materials can be saved, the processing difficulty can be reduced, the processing time can be shortened, and the cost can be reduced.
Drawings
FIG. 1 is a block diagram (partial cross-sectional view) of embodiment 1 of the present invention;
FIG. 2 is a perspective view of the spool support sleeve of embodiment 1;
FIG. 3 is a cross-sectional view of the spool support sleeve of example 1;
FIG. 4 is a schematic structural view of the valve cartridge of example 1;
fig. 5 is a right limit position state diagram (partial sectional view) of the valve spool in embodiment 1;
FIG. 6 is an oil flow chart at operating pressure for example 1;
FIG. 7 is a block diagram of embodiment 2 of the present invention;
FIG. 8 is a schematic view (partially sectional view) of the spool support in embodiment 2;
the reference numerals are:
1-armature, 2-armature tie rod, 3-magnetic coil, 4-valve head, 5-valve core supporting sleeve, 6-valve core, 8-return spring, 9-return spring element, 10-annular relief groove, 11-first pressure balancing groove, 12-valve plate, 14-return hole, 17-second pressure balancing groove, 18-spring limit seat, 19-electromagnetic drive limit table, 21-accommodating chamber, 22-first annular groove (return groove), 23-second annular groove (supply groove), 24-third annular groove (control groove), 25-fourth annular groove (pressure reducing groove), 26-spring accommodating chamber, 28-positioning groove, 30-pressure discharge groove, 31-return passage, 32-valve core upper section, 33-valve core middle section, 34-valve core lower section, 35-liquid inlet, 36-liquid outlet, 37-oil duct.
Detailed Description
The invention is further described below with reference to the accompanying drawings and specific examples.
Example 1:
referring to FIG. 1, the proportional solenoid valve for controlling a clutch includes a solenoid driver and a valve assembly; the electromagnetic drive comprises an armature 1, an armature tie rod 2, a return spring element 9 and at least two magnetic coils 3.
The valve assembly comprises a valve plate 12, a valve core supporting sleeve 5 and a valve core 6 which are sleeved in sequence from outside to inside. The right end of the valve core 6 is provided with a spring accommodating cavity 26, a return spring 8 is arranged in the spring accommodating cavity 26, and a spring limiting seat 18 is arranged in the valve plate 12. The outer circle of the valve core supporting sleeve 5 is matched with the inner hole of the valve plate 12, and the inner hole of the valve core supporting sleeve 5 is matched with the outer circle of the valve core 12. The contact surface of the armature tie rod 2 and the valve core 6 is a plane, so that the valve core 6 can be pushed to axially move more effectively.
Referring to fig. 2 and 3, the inner wall of the spool support sleeve 5 is provided with a return groove 22, a supply groove 23, a control groove 24, and a depressurization groove 25 in this order in the axial direction. The depressurization groove 25 is near the right end of the spool support sleeve 5. The supply groove 23, the control groove 24, and the depressurization groove 25 partially penetrate the side wall of the spool support sleeve 5. The interval between the reflux groove 22 and the supply groove 23 is 2.8mm, the interval between the supply groove 23 and the control groove 24 is 8.5mm to 8.9mm, the interval between the control groove 24 and the pressure reducing groove 25 is 2.8mm, the width of the reflux groove 22 is 14mm to 15mm, and the depth is 3mm to 4mm, so that enough oil can be ensured in the reflux groove 22.
The bottom of the reflux groove 22 is provided with a reflux hole 14, and the outer wall of the valve core supporting sleeve 5 is provided with a reflux passage 31 which is communicated with the control groove 24 and the reflux hole 14. The diameter of the return hole 14 is 0.6 to 1mm. The angle between the return channel 31 and the axis of the spool support sleeve 5 is 45 deg..
Referring to fig. 4, the spool 6 includes a valve head 4, a spool upper section 32, a spool middle section 33, a spool lower section 34; the diameter of the upper section 32 of the valve core is smaller than the diameter of the middle section 33 of the valve core; a connecting part with the diameter smaller than that of the valve core is arranged between two adjacent valve cores, wherein the connecting part between the middle section 33 of the valve core and the lower section 34 of the valve core is three sections, two sections at two ends are cylinders, the middle transition section is a round table, and the diameter of the cylinder close to the middle section 33 of the valve core is smaller than that of the cylinder at the other end. When the supply tank 23 is communicated with the control tank 24, when oil passes through an overflow section formed between the connecting part between the middle section 33 of the valve core and the lower section 34 of the valve core and the valve core supporting sleeve 5, the flowing direction of the oil is converged at a point position on the valve core 6, the connecting part between the middle section 33 of the valve core and the lower section 34 of the valve core is three sections, two sections at two ends are cylinders, the middle transition section is a circular table, and the diameter of the cylinder close to the middle section 33 of the valve core is smaller than that of the cylinder at the other end.
The transition surfaces of the two cylinders and the valve core section are provided with circular arc-shaped slow grooves 16; the depth of the flow retarding groove 16 is 3mm, the distance between the two flow retarding grooves is 9.2mm to 9.6mm, when oil flows to the control groove 24 through the supply groove 23 or flows to the depressurization groove 25 from the control groove 24, the flow retarding groove 16 can increase the area of the flow cross section, and the impact pressure of the oil can be reduced while the flow is increased, so that the vibration amplitude and frequency of the valve core 6 are reduced, and the stability of a control system is improved.
In order to avoid the phenomenon that the valve core 6 is unstable in the whole control system and noise is increased due to uneven oil distribution or offset caused by self gravity, the outer circular surfaces of the valve core upper section 32, the valve core middle section 33 and the valve core lower section 34 are all provided with a group of annular pressure reducing grooves 10. The number of the annular pressure relief grooves 10 in each group is three, and the distance between two adjacent annular pressure relief grooves 10 is 1mm or more. When oil in the annular cavity between the valve core 6 and the valve core supporting sleeve 5 passes through the annular pressure reducing groove 10, a flow-around effect can be generated, so that the pressure at two ends of the annular oil duct is reduced and balanced.
Referring to fig. 1 and 2, a positioning groove 28 is provided on the outer wall of the valve core supporting sleeve 5, and a positioning pin of a columnar electromagnetic valve can be inserted into the positioning groove to limit the valve core 6. The left end of the valve core supporting sleeve 5 is provided with an annular electromagnetic driving device limiting table 19 and a pressure discharge groove 30. The electromagnetic drive has a hollow receiving chamber 21 therein for receiving and connecting the valve head 4. When the system operates, a closed space filled with negative pressure oil is formed in the accommodating cavity 21, so that axial movement of the valve core 6 is blocked, and the negative pressure of the accommodating cavity 21 can be discharged by the pressure discharge groove 30, so that control difficulty of the control system is reduced.
The right end of the valve core supporting sleeve 5 is provided with a first pressure balancing groove 11, and the right end of the valve core 6 is provided with a second pressure balancing groove 17. The two balancing grooves can balance the pressure between the reset spring accommodating cavity and the outside of the valve plate 12, so that the force which can prevent the valve core 6 from moving normally is avoided to be formed in the reset spring accommodating cavity, and the control difficulty of the proportional electromagnetic adjustment is reduced.
Referring to fig. 1, the sidewall of valve plate 12 is provided with a liquid inlet 35, a liquid outlet 36, and an oil passage 37. The liquid inlet 35 is communicated with the supply groove 23; the liquid outlet 36 is communicated with the depressurization groove 25; the inlet of the oil duct 37 communicates with the control groove 24, and the outlet communicates with the inlet of the clutch.
Referring to fig. 1, 5 and 6, the operation principle of the proportional solenoid valve for controlling a clutch is as follows:
when the clutch needs to be opened or closed, the power supply of the electromagnetic driving device is disconnected, the magnetic coil 3 is powered off, the electromagnetic force acting on the armature 1 disappears, the return spring 8 pushes the valve core 6, the armature 1, the armature tie rod 2 and the return spring element 9 to move leftwards, and at the moment, the proportional electromagnetic valve for controlling the clutch is opened, and the supply groove 23 is communicated with the control groove 24; after the oil flows in from the liquid inlet 35 of the valve plate 12 and flows through the supply groove 23 and the control groove 24 in sequence, one part of the oil pushes the clutch to be closed after passing through the oil duct 37 in the valve plate 12, and the other part of the oil enters the return groove 22 through the return channel 31 and the return hole 14, and the pressure of the liquid in the return groove 22 is used for buffering the elastic force of the return spring 8.
When the state of the clutch needs to be changed, the power supply of the electromagnetic driving device is restored, the magnetic coil 3 is electrified, the electromagnetic force generated by the magnetic coil 3 acts on the armature 1, the armature 1 drives the armature tie rod 2 and the return spring element 9 to move rightwards, the armature tie rod 2 pushes the valve core 6 to move rightwards, the valve core 6 compresses the return spring 8 and then contacts with the bottom of the valve hole of the valve plate 12, at the moment, the proportional electromagnetic valve for controlling the clutch is closed, and the supply groove 23 and the control groove 24 are disconnected. Part of the oil in the control tank 24 and the depressurization tank 25 enters the recirculation tank 22 through the recirculation passage 31 and the recirculation hole 14, and the liquid in the recirculation tank 22 pushes the valve core 6 to move to the right side because the diameter of the valve core middle section 33 on the right side of the recirculation tank 22 is larger than the diameter of the valve core upper end 32 on the left side of the recirculation tank 22, and at this time, the force pushing the valve core 6 is equal to the sum of the electromagnetic force and the oil pressure in the recirculation tank 22. The other part of oil in the control groove 24 and the depressurization groove 25 flows out through the oil outlet of the valve plate 12.
The electromagnetic driving device in the proportional electromagnetic valve for controlling the clutch can generate the closing form of each oil liquid passage under the condition of providing high frequency, thereby indirectly controlling the trend of oil liquid and finally completing the effect of controlling the closing of the clutch.
Example 2:
referring to fig. 7 and 8, embodiment 2 is similar in structure to embodiment 1, except that:
the pressure reducing groove 25 is close to the left end of the valve core supporting sleeve 5; the valve core 6 comprises a valve head 4 and a three-section valve core; the outer diameter of the lower valve core section 34 is smaller than the diameter of the middle valve core section 33; a connecting part with the diameter smaller than that of the valve core is arranged between two adjacent valve cores, wherein the connecting part between the upper valve core section 32 and the middle valve core section 33 is three sections, the two sections at the two ends are cylinders, the middle transition section is a circular table, and the diameter of the cylinder close to the middle valve core section 33 is smaller than that of the cylinder at the other end. Since the diameter of the spool middle section 33 on the left side of the return groove 22 is larger than the diameter of the spool lower end 4 on the right side of the return groove 22, the force pushing the spool 6 is equal to the difference between the electromagnetic force and the oil pressure in the return groove 22.
The electromagnetic driving device in the proportional electromagnetic valve for controlling the clutch can generate the closing form of each oil liquid passage under the condition of providing low electric frequency, thereby indirectly controlling the trend of oil liquid and finally completing the effect of controlling the closing of the clutch.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the present invention and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A proportional solenoid valve for controlling a clutch, comprising a solenoid drive and a valve assembly; the electromagnetic drive comprises an armature (1), an armature tie rod (2), a return spring element (9) and at least two magnetic coils (3);
the method is characterized in that:
the valve assembly comprises a valve plate (12), a valve core supporting sleeve (5) and a valve core (6) which are sequentially sleeved from outside to inside; a return spring (8) is arranged between the right end of the valve core (6) and the valve plate (12); the outer circle of the valve core supporting sleeve (5) is matched with the inner hole of the valve plate (12), and the inner hole of the valve core supporting sleeve (5) is matched with the outer circle of the valve core (12);
the inner wall of the valve core supporting sleeve (5) is sequentially provided with a first annular groove (22), a second annular groove (23), a third annular groove (24) and a fourth annular groove (25) along the axial direction; the first annular groove (22) is used as a reflux groove; a second ring groove (23) as a supply groove; the third ring groove (24) is used as a control groove; the fourth ring groove (25) is used as a depressurization groove; the second annular groove (23), the third annular groove (24) and the fourth annular groove (25) are partially communicated with the side wall of the valve core supporting sleeve (5);
the fourth annular groove (25) is close to the right end of the valve core supporting sleeve (5); the valve core (6) comprises a valve head (4) and a three-section valve core; the diameter of the valve core upper section (32) is smaller than that of the valve core middle section (33); a connecting part with the diameter smaller than that of the valve core is arranged between two adjacent valve cores, wherein the connecting part between the middle section (33) of the valve core and the lower section (34) of the valve core is three sections, two sections positioned at two ends are cylinders, the middle transition section is a round table, and the diameter of the cylinder close to the middle section (33) of the valve core is smaller than that of the cylinder at the other end;
or the fourth annular groove (25) is close to the left end of the valve core supporting sleeve (5); the valve core (6) comprises a valve head (4) and a three-section valve core; the outer diameter of the valve core lower section (34) is smaller than the diameter of the valve core middle section (33); a connecting part with the diameter smaller than that of the valve core is arranged between two adjacent valve cores, wherein the connecting part between the upper valve core section (32) and the middle valve core section (33) is three sections, two sections at two ends are cylinders, the middle transition section is a round table, and the diameter of the cylinder close to the middle valve core section (33) is smaller than that of the cylinder at the other end;
the bottom of the first annular groove (22) is provided with a backflow hole (14); the outer wall of the valve core supporting sleeve (5) is provided with a backflow channel (31) communicated with the third annular groove (24) and the backflow hole (14);
a liquid inlet (35), a liquid outlet (36) and an oil duct (37) are formed in the valve plate (12); the liquid inlet (35) is communicated with the second annular groove (23); the liquid outlet (36) is communicated with the fourth annular groove (25); the inlet of the oil duct (37) is communicated with the third annular groove (24), and the outlet of the oil duct is communicated with the liquid inlet of the clutch;
when the valve core (6) is positioned at the left limit position, the second annular groove (23) is communicated with the third annular groove (24); after flowing through the second annular groove (23) and the third annular groove (24) in sequence, one part of oil pushes the clutch after passing through an oil duct (37) in the valve plate (12), and the other part of oil enters the first annular groove (22) through a backflow channel (31) and a backflow hole (14);
when the valve core (6) is positioned at the right limit position, the third annular groove (24) is communicated with the fourth annular groove (25); and part of oil in the third annular groove (24) and the fourth annular groove (25) flows out through the oil outlet of the valve plate (12), and the other part of oil enters the first annular groove (22) through a backflow channel (31) and a backflow hole (14).
2. A proportional solenoid valve for controlling a clutch according to claim 1, wherein: the left end of the valve core supporting sleeve (5) is provided with a pressure discharge groove (30), and the right end of the valve core supporting sleeve is provided with a first pressure balance groove (11); the right end of the valve core (6) is provided with a second pressure balance groove (17).
3. A proportional solenoid valve for controlling a clutch according to claim 2, wherein: the transition surfaces of the two cylinders and the valve core section are provided with circular arc-shaped slow grooves (16); the depth of the slow flow groove (16) is 3mm.
4. A proportional solenoid valve for controlling a clutch according to claim 1 or 3, wherein: the outer circular surfaces of the valve core upper section (32), the valve core middle section (33) and the valve core lower section (34) are respectively provided with a group of annular pressure reducing grooves (10).
5. A proportional solenoid valve for controlling a clutch as defined in claim 4, wherein: the number of the annular pressure reducing grooves (10) in each group is three, and the distance between two adjacent annular pressure reducing grooves (10) is more than or equal to 1mm.
6. A proportional solenoid valve for controlling a clutch as defined in claim 5, wherein: the first ring groove (22) has a width of 14mm to 15mm and a depth of 3mm to 4mm.
7. A proportional solenoid valve for controlling a clutch according to claim 6, wherein: the diameter of the backflow hole (14) is 0.6-1 mm.
8. A proportional solenoid valve for controlling a clutch as defined in claim 7, wherein: the included angle between the backflow channel (31) and the axis of the valve core supporting sleeve (5) is 45 degrees.
9. A proportional solenoid valve for controlling a clutch according to claim 8, wherein: a spring limit seat (18) is arranged in the valve plate (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910469944.6A CN110260025B (en) | 2019-05-31 | 2019-05-31 | Proportional electromagnetic valve for controlling clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910469944.6A CN110260025B (en) | 2019-05-31 | 2019-05-31 | Proportional electromagnetic valve for controlling clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110260025A CN110260025A (en) | 2019-09-20 |
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| CN110953361B (en) * | 2019-12-27 | 2022-07-22 | 一汽解放汽车有限公司 | Rotary flow control valve |
| EP3916184A1 (en) * | 2020-05-27 | 2021-12-01 | dormakaba Deutschland GmbH | Regulator valve for a door drive and door drive |
| CN116771958A (en) * | 2021-03-30 | 2023-09-19 | 陕西华诚领航电磁科技有限责任公司 | Overflow type proportional pressure reducing electromagnetic valve |
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| CN210566559U (en) * | 2019-05-31 | 2020-05-19 | 陕西法士特齿轮有限责任公司 | Proportional solenoid valve for controlling clutch |
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| GB1486851A (en) * | 1974-01-07 | 1977-09-28 | Caterpillar Tractor Co | Control valve having a pressure compensating spool |
| DE19643430A1 (en) * | 1996-10-22 | 1998-04-30 | Man B & W Diesel Gmbh | Control valve e.g. for large diesel engine |
| KR19990010175A (en) * | 1997-07-15 | 1999-02-05 | 서상기 | PRESSURE REDUCING VALVE |
| JP2004176895A (en) * | 2002-09-30 | 2004-06-24 | Toyoda Mach Works Ltd | Solenoid valve |
| JP2009174623A (en) * | 2008-01-24 | 2009-08-06 | Jtekt Corp | Solenoid valve |
| CN204284055U (en) * | 2014-11-19 | 2015-04-22 | 上海立新液压有限公司 | Plug-in type three-way type proportional pressure-reducing valve |
| CN205978687U (en) * | 2016-08-31 | 2017-02-22 | 宁波海宏液压有限公司 | Bayonet large -traffic tee bend ratio pressure reducing valve |
| CN106567944A (en) * | 2016-09-19 | 2017-04-19 | 北京精密机电控制设备研究所 | Multiple-step variable-cross-section slide valve pair for high-flow servo valve |
| CN107504213A (en) * | 2017-09-30 | 2017-12-22 | 中国第汽车股份有限公司 | The proportional overflow magnetic valve and its method of work of a kind of sliding valve structure |
| CN210566559U (en) * | 2019-05-31 | 2020-05-19 | 陕西法士特齿轮有限责任公司 | Proportional solenoid valve for controlling clutch |
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