CN112555299A - Double-control electromagnetic valve and hydraulic clutch system - Google Patents

Double-control electromagnetic valve and hydraulic clutch system Download PDF

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Publication number
CN112555299A
CN112555299A CN202011397038.9A CN202011397038A CN112555299A CN 112555299 A CN112555299 A CN 112555299A CN 202011397038 A CN202011397038 A CN 202011397038A CN 112555299 A CN112555299 A CN 112555299A
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China
Prior art keywords
valve
coil
oil outlet
cavity
oil
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Granted
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CN202011397038.9A
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Chinese (zh)
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CN112555299B (en
Inventor
孔庆乐
温华明
杨士先
姚萌
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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Priority to CN202011397038.9A priority Critical patent/CN112555299B/en
Publication of CN112555299A publication Critical patent/CN112555299A/en
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Publication of CN112555299B publication Critical patent/CN112555299B/en
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/008—Valve failure
    • 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
    • F16D2500/1027—Details about the hydraulic valves
    • 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
    • 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
    • F16D2500/11—Application
    • F16D2500/1107—Vehicles
    • 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
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/501—Relating the actuator

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The invention discloses a double-control electromagnetic valve which comprises a shell, a first control valve and a second control valve, wherein a driving device is arranged in the shell; the first control valve is provided with a first valve sleeve, a first valve cavity and a first valve core, the second control valve is provided with a second valve sleeve, a second valve cavity and a second valve core, the first valve core and the second valve core are respectively connected with a driving device, and the driving device is used for driving the first valve core to move in the first valve cavity or driving the second valve core to move in the second valve cavity. A first flow channel for allowing a medium to flow from a first oil inlet to a first oil outlet is arranged in the first valve cavity, and a second flow channel for allowing the medium to flow from a second oil inlet to a second oil outlet is arranged in the second valve cavity. The invention also discloses a hydraulic clutch system comprising the double-control electromagnetic valve, which ensures that the control of the clutch is continuously completed through the valve core on the other side when the valve core on one side is blocked, thereby realizing the double control of the clutch.

Description

Double-control electromagnetic valve and hydraulic clutch system
Technical Field
The invention relates to the technical field of electric control valves, in particular to a double-control electromagnetic valve and a hydraulic clutch system.
Background
At present, the electromagnetic valves used for controlling the DCT clutch are mainly single-control electromagnetic valves and double-control electromagnetic valves. In the process of clutch engagement, once a mechanical valve of a single-control electromagnetic valve is stuck or stuck, pressure abnormity occurs in the process of clutch engagement, and the whole vehicle stops or enters a creeping state due to the fact that the clutch cannot be well controlled. The dual control solenoid valve differs from the single control solenoid valve in that the dual control solenoid valve has two coils and the single control solenoid valve has only one coil. Therefore, no matter the single-control electromagnetic valve or the double-control electromagnetic valve, once the mechanical valve of the electromagnetic valve is stuck or stuck, the pressure abnormality occurs in the clutch engaging process, and the whole vehicle stops or enters a creeping state. The solenoid valve in the prior art cannot guarantee normal engagement, disengagement and friction of the clutch when an abnormality occurs.
Disclosure of Invention
The invention mainly aims to provide a double-control electromagnetic valve and a hydraulic clutch system, and aims to solve the problem that when a mechanical valve of the electromagnetic valve is stuck or stuck, the pressure is abnormal in the clutch engaging process.
In order to achieve the purpose, the double-control electromagnetic valve provided by the invention comprises a shell, a first control valve and a second control valve, wherein a driving device is arranged in the shell; the first control valve is provided with a first valve sleeve, a first valve cavity and a first valve core, the first valve sleeve is internally provided with the first valve cavity, and the first valve cavity is internally provided with the first valve core; the second control valve is provided with a second valve sleeve, a second valve cavity and a second valve core, the second valve cavity is arranged in the second valve sleeve, and the second valve core is arranged in the second valve cavity; the first valve sleeve and the second valve sleeve are connected to two ends of the shell, the first valve core and the second valve core are respectively connected with a driving device, and the driving device is used for driving the first valve core to move in the first valve cavity or driving the second valve core to move in the second valve cavity. A first valve cavity is formed in the valve body, and a first valve cavity is formed in the valve body; and a second oil inlet and a second oil outlet are formed in the second valve sleeve, and a second flow channel for allowing a medium to flow from the second oil inlet to the second oil outlet is formed in the second valve cavity.
Preferably, the driving device comprises a movable armature, a fixed armature, a first coil and a second coil, the fixed armature is arranged between the first valve cavity and the second valve cavity, the first coil is arranged on the outer side face of the fixed armature in the direction close to the first valve cavity in a surrounding manner, the second coil is arranged on the outer side face of the fixed armature in the direction close to the second valve cavity in a surrounding manner, and the first coil and the second coil generate opposite acting forces when electrified; the movable armature moves towards the first opening or the second opening when the first coil or the second coil is electrified so as to drive the first valve core or the second valve core to move in the first valve cavity or the second valve cavity.
Preferably, the first valve core comprises a first extending piece arranged at the first opening, and the first extending piece penetrates through the first opening and is abutted against one end of the movable armature; the second valve core comprises a second extending piece arranged at the second opening, and the second extending piece penetrates through the second opening to abut against the other end of the movable armature.
Preferably, a first spring and a first feedback pin are further arranged in the first valve cavity, one end of the first spring is connected to one end, away from the driving device, of the first valve cavity, and the other end of the first spring is connected with one end of the first feedback pin; the other end of the first feedback pin is in abutting connection with the first valve core; the second valve cavity is internally provided with a second spring and a second feedback pin, one end of the second spring is connected to one end of the second valve cavity, which is away from the driving device, the other end of the second spring is connected with one end of the second feedback pin, and the other end of the second feedback pin is abutted against the second valve core.
Preferably, the housing is further provided with a first oil drainage port and a second oil drainage port, the first oil drainage port is arranged on one side of the first oil outlet, which is far away from the driving device, and the second oil drainage port is arranged on one side of the second oil outlet, which is far away from the driving device; and a third flow passage for allowing a medium to flow from the first oil outlet to the first oil drainage port is arranged in the first valve cavity, and a fourth flow passage for allowing the medium to flow from the second oil outlet to the second oil drainage port is arranged in the second valve cavity.
Preferably, the driving device further includes a first coil support and a second coil support, the first coil support is disposed between the stationary armature and the first coil, and the second coil support is disposed between the stationary armature and the second coil.
Preferably, a current control unit is arranged between the first coil and the second coil of the static armature, the current control unit is respectively connected with the first coil and the second coil, and the current control unit is used for controlling current to alternately connect the first coil and the second coil.
The invention also provides a hydraulic clutch system which comprises a clutch, a one-way valve and the double-control electromagnetic valve, wherein the double-control electromagnetic valve is connected with the one-way valve through a first oil outlet and a second oil outlet, and the clutch is provided with a clutch control branch connected with the one-way valve.
Preferably, a steel ball is arranged in the one-way valve, the steel ball is arranged between the first oil outlet and the second oil outlet, the first oil outlet and the second oil outlet are symmetrically arranged on two sides of the one-way valve, and the diameter of the steel ball is larger than the opening sizes of the first oil outlet and the second oil outlet.
Preferably, a spring type accumulator for adjusting oil pressure and a pressure sensor for monitoring pressure are arranged on the clutch control branch.
In the technical scheme of the invention, when a medium enters the double-control electromagnetic valve through the oil inlet, the driving device can be an electromagnet, when the electromagnet is installed, the electromagnet is electrified to start working, the electromagnet can generate magnetic attraction under the action of current of the gearbox by controlling the joint between the first coil and the gearbox, the first coil generates magnetic attraction force under the action of the current of the gearbox, the movable armature moves towards the first opening along the length direction of the cavity under the action of the magnetic attraction force, the movable armature pushes the first valve core to move in the moving process, the first valve core moves along the first valve cavity towards the direction departing from the electromagnet in the moving process together with the movable armature, a first flow channel for the medium to flow is arranged between the middle length direction of the first valve core and the first valve cavity, the first flow channel is communicated with the first oil inlet, one end of the first flow channel is gradually close to the first oil outlet in the moving process of the first valve, the medium can enter from the first oil inlet, then flow out through the first flow channel and then flow out from the first oil outlet, and then the medium flows to the clutch from the first oil outlet. When faults such as jamming or jamming occur at the position of the first valve core, the current supply of the first coil and the current of the gearbox is disconnected, the current is converted into the connection between the second coil and the gearbox, the second coil generates magnetic attraction force under the action of the current of the gearbox, the movable armature moves towards the second opening along the length direction of the cavity under the action of the magnetic attraction force of the second coil, the movable armature pushes the second valve core to move in the moving process, the second valve core and the movable armature move along the direction of the second valve cavity away from the electromagnet in the moving process, a second flow channel for a medium to flow is arranged between the length direction of the middle part of the second valve core and the second valve cavity, the second flow channel is communicated with a second oil inlet, one end of the second flow channel is gradually close to the second oil outlet in the moving process of the second valve core, when one end of the second flow channel is communicated with the second oil outlet, the medium can enter from the second oil inlet and then, then the medium flows from the second oil outlet to the clutch, so that the second valve core replaces the failed first valve core to continue to complete the work, and the clutch is ensured. The double-control electromagnetic valve solves the problem that the whole vehicle stops or enters a creeping state when a mechanical valve core on one side fails by arranging the electromagnet and the two mechanical valves, thereby ensuring the normal engagement, disengagement and sliding friction of the clutch and ensuring the normal running of the vehicle.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of the dual-control solenoid valve of the present invention at an angle;
FIG. 2 is a schematic cross-sectional view of the dual-control solenoid valve of the present invention at an angle;
FIG. 3 is a hydraulic schematic of the hydraulic clutch system of the present invention;
the reference numbers illustrate:
Figure BDA0002814165750000041
Figure BDA0002814165750000051
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a double-control electromagnetic valve.
Referring to fig. 1 to 2, in a first embodiment of the present invention, the dual-control electromagnetic valve includes a housing 1, a first control valve 2 and a second control valve 3, wherein a driving device is disposed in the housing 1; the first control valve 2 is provided with a first valve sleeve 8, a first valve cavity 5 and a first valve core 7, the first valve sleeve 8 is internally provided with the first valve cavity 5, and the first valve cavity 5 is internally provided with the first valve core 7; the second control valve 3 is provided with a second valve housing 10, a second valve cavity 6 and a second valve core 9, the second valve cavity 6 is arranged in the second valve housing 10, and the second valve core 9 is arranged in the second valve cavity 6; the first valve housing 8 and the second valve housing 10 are connected to two ends of the housing 1, and the first valve spool 7 and the second valve spool 9 are respectively connected to a driving device, which is used for driving the first valve spool 7 to move in the first valve chamber 5 or driving the second valve spool 9 to move in the second valve chamber 6. A first oil inlet 17 and a first oil outlet 19 are formed in the first valve pocket 8, and a first flow channel 31 for allowing a medium to flow from the first oil inlet 17 to the first oil outlet 19 is arranged in the first valve cavity 5; a second oil inlet 18 and a second oil outlet 20 are formed in the second valve pocket 10, and a second flow channel 32 for allowing a medium to flow from the second oil inlet 18 to the second oil outlet 20 is arranged in the second valve chamber 6.
In the first embodiment, as shown in fig. 1, the double control electromagnetic valve is mainly composed of a left first control valve 2, a middle housing 1, and a left second control valve 3, the first control valve 2 and the second control valve 3 are connected to the left and right ends of the housing 1, and the first control valve 2, the housing 1, and the second control valve 3 may be cylinders. As shown in fig. 2, the first control valve 2 is respectively a first valve sleeve 8, a first valve cavity 5 and a first valve core 7 from outside to inside, a first opening on the first valve sleeve 8 from right to left is a first oil inlet 17, a second opening is a first oil outlet 19, and a first flow channel 31 for allowing a medium to flow from the first oil inlet 17 to the first oil outlet 19 is arranged between the first valve core 7 and the first valve sleeve 8. The second control valve 3 is respectively a second valve sleeve 10, a second valve cavity 6 and a second valve spool 9 from outside to inside, a first opening on the second valve sleeve 10 from right to left is a second oil inlet 18, a second opening is a second oil outlet 20, and a second flow passage 32 for medium to flow from the second oil inlet 18 to the second oil outlet 20 is arranged between the second valve spool 9 and the second valve sleeve 10. The first valve sleeve 8 and the second valve sleeve 10 are connected to two ends of the housing 1, a hollow cavity is arranged in the housing 1, the cavity is communicated with the first valve cavity 5 and the second valve cavity 6, a driving device is arranged in the cavity, the first valve core 7 and the second valve core 9 are respectively connected with the driving device, and the first valve core 7 moves in the first valve cavity 5 or the second valve core 9 moves in the second valve cavity 6 under the driving of the driving device. In other embodiments, the driving device comprises a movable armature 11, a fixed armature 12, a first coil 13 and a second coil 14, the fixed armature 12 is arranged between the first valve chamber 5 and the second valve chamber 6, the first coil 13 is arranged around the outer side face of the fixed armature 12 in the direction close to the first valve chamber 5, the second coil 14 is arranged around the outer side face of the fixed armature 12 in the direction close to the second valve chamber 6, and the first coil 13 and the second coil 14 generate opposite acting forces when electrified; the static armature 12 is internally provided with a cavity for the movable armature 11 to move along the length direction of the shell 1, a first opening 15 is formed at the communication position of the cavity and the first valve cavity 5, a second opening 16 is formed at the communication position of the cavity and the second valve cavity 6, and the movable armature 11 moves towards the first opening 15 or the second opening 16 when the first coil 13 or the second coil 14 is electrified so as to drive the first valve core 7 or the second valve core 9 to move in the first valve cavity 5 or the second valve cavity 6. In other embodiments, the driving device may be an electromagnet 4, the electromagnet 4 includes a moving armature 11, a static armature 12, a first coil 13 and a second coil 14, the static armature 12 may be configured as a cylinder matching with the cavity of the housing 1, the left end of the static armature 12 is connected to the first valve cavity 5, the right end of the static armature 12 is connected to the second valve cavity 6, a cavity with left and right openings is formed in the static armature 12, the left opening of the static armature 12 is a first opening 15, the right opening of the static armature 12 is a second opening 16, and the moving armature 11 capable of moving between the first opening 15 and the second opening 16 is matingly disposed in the cavity. The left side of the outer side face of the static armature 12 surrounds the first coil 13, the right side of the outer side face of the static armature 12 surrounds the second coil 14, the first coil 13 and the second coil 14 are respectively provided with current by a transmission, the first coil 13 and the second coil 14 can generate opposite magnetic attraction under the action of the current, the first coil 13 can generate left magnetic attraction to the moving armature 11, the second coil 14 can generate right magnetic attraction to the moving armature 11, and the moving armature 11 can move left or right under the action of the magnetic attraction. In other embodiments, the driving device may also be a hydraulic system, and the hydraulic system may control the first valve spool 7 and the second valve spool 9 to move left or right, so as to realize the communication between the first oil inlet 17 and the first oil outlet 19 and the communication between the second oil inlet 18 and the second oil outlet 20.
Referring to fig. 2, in another embodiment of the present invention, the first valve element 7 includes a first extending member disposed at the first opening 15, and the first extending member penetrates through the first opening 15 and abuts against one end of the movable armature 11; the second spool 9 includes a second extension piece provided at the second opening 16, the second extension piece interfering with the other end of the movable armature 11 through the second opening 16.
In other embodiments, a first extending member extends rightwards from the right end of the first valve core 7, the first extending member penetrates through the first opening 15, the right end of the first valve core abuts against the left end of the movable armature 11, a second extending member extends leftwards from the left end of the second valve core 9, the second extending member penetrates through the second opening 16, the left end of the second valve core abuts against the right end of the movable armature 11, and the abutting positions of the first extending member and the second extending member with the movable armature 11 can be designed into a thimble structure. When the first coil 13 and the second coil 14 are not energized, the first valve core 7 and the second valve core 9 may be in interference connection with both ends of the stationary armature 12. When the electromagnetic valve works, hydraulic oil enters the electromagnetic valve from the first material opening and the second oil inlet 18, meanwhile, the first coil 13 can be electrified firstly, the movable armature 11 moves leftwards under the action of magnetic attraction generated by the first coil 13, the movable armature 11 pushes the first valve core 7 to move leftwards when moving, at the moment, the second valve core 9 does not move, and hydraulic oil at the second oil inlet 18 cannot flow. A first flow channel 31 for medium to flow is arranged between the middle part of the first valve core 7 and the wall of the first valve cavity 5, the first flow channel 31 is communicated with the first oil inlet 17, the first oil inlet 17 can be connected to the left side of the first flow channel 31 before the first coil 13 is electrified, and after the first coil 13 is electrified, the first oil inlet 17 is gradually deviated to the right side of the first flow channel 31 in the process that the first valve core 7 moves leftwards. The first oil outlet 19 is arranged on the left side of the first oil inlet 17, the left end of the first flow channel 31 is gradually close to the first oil outlet 19 in the leftward movement process of the first valve core 7, when the left end of the first flow channel 31 is communicated with the first oil outlet 19, hydraulic oil can enter from the first oil inlet 17, then flows out through the flow channel and then flows out from the first oil outlet 19, and finally, the hydraulic oil flows to the clutch 35 from the first oil outlet 19. The size of the motion track of the movable armature 11 can be controlled by controlling the current of the first coil 13, so that the size of the leftward movement displacement of the first valve core 7 is controlled, then the size of the first oil outlet 19 is controlled, and finally the size control of the flow rate and the flow speed of the hydraulic oil is realized. When faults such as clamping stagnation or clamping pause occur at the position of the first valve core 7, the supply of current is switched, the second coil 14 is connected with the current, the second coil 14 generates magnetic attraction force under the action of the current of the gearbox, the magnetic attraction force on the left side of the movable armature 11 disappears, then the second coil 14 moves rightwards under the action of the magnetic attraction force, the movable armature 11 pushes the second valve core 9 to move leftwards when moving, and hydraulic oil at the first oil inlet 17 cannot flow from the first oil outlet 19 due to the faults of the first valve core 7. A second flow passage 32 for medium to flow is arranged between the middle part of the second valve core 9 and the second valve cavity 6, the second flow passage 32 is communicated with the second oil inlet 18, the second oil inlet 18 can be connected to the right side of the second flow passage 32 before the second coil 14 is electrified, and the second oil inlet 18 gradually deflects towards the left side of the second flow passage 32 in the process that the second valve core 9 moves rightwards after the second coil 14 is electrified. The second oil outlet 20 is arranged on the right side of the second oil inlet 18, the right end of the second flow passage 32 is gradually close to the second oil outlet 20 in the process that the second valve spool 9 moves rightwards, when the right end of the second flow passage 32 is communicated with the second oil outlet 20, hydraulic oil can enter from the second oil inlet 18, then flows out through the second flow passage 32 and then flows out through the second oil outlet 20, and finally flows to the clutch 35 from the second oil outlet 20. Similarly, the size of the motion track of the movable armature 11 can be controlled by controlling the current of the second coil 14, so as to control the left movement displacement of the second valve spool 9, then control the size of the second oil outlet 20, and finally realize the size control of the flow rate and the flow velocity of the hydraulic oil. The movable armature 11 moves towards the second opening 16 along the length direction of the cavity under the action of the magnetic attraction of the second coil 14, the movable armature 11 pushes the second valve core 9 to move in the moving process, the second valve core 9 moves along the second valve cavity 6 in the direction away from the electromagnet 4 in the moving process together with the movable armature 11, a second flow passage 32 for a medium to flow is arranged between the length direction of the middle part of the second valve core 9 and the wall of the second valve cavity 6, the second flow passage 32 is communicated with the second oil inlet 18, the right end of the second flow passage 32 is gradually close to the second oil outlet 20 in the moving process of the second valve core 9, when the right end of the second flow passage 32 is communicated with the second oil outlet 20, hydraulic oil can enter from the second oil inlet 18 and then flow out through the second flow passage 32 and then flow out through the second oil outlet 20, and then flows from the second oil outlet 20 to the clutch 35, so that the second valve core 9 replaces the failed first valve core 7, the clutch 35 is secured. In other embodiments, the drive device further comprises a first coil support 27 and a second coil support 28, the first coil support 27 being disposed between the stationary armature 12 and the first coil 13, the second coil support 28 being disposed between the stationary armature 12 and the second coil 14. In other embodiments, a first coil support 27 and a second coil support 28 are disposed between the stationary armature 12 and the first coil 13 and between the stationary armature 12 and the second coil 14 to support and protect the first coil 13 and the second coil 14. The double-control electromagnetic valve solves the problem that the whole vehicle stops or enters a creeping state when a mechanical valve core on one side fails by arranging the electromagnet 4 and the two mechanical valves, thereby ensuring the normal engagement, disengagement and sliding friction of the clutch 35 and ensuring the normal running of the vehicle. In other embodiments, a hollow cavity 30 may be disposed inside the moving armature 11, and the hollow cavity 30 may reduce the weight of the moving armature 11, so that the reaction of the moving armature 11 is more sensitive. The double-control electromagnetic valve solves the problem that the whole vehicle stops or enters a creeping state due to the failure of the mechanical valve core by arranging the electromagnet 4 to connect the two mechanical valve cores, ensures the normal connection, disconnection and sliding friction of the clutch 35 and ensures the normal running of the vehicle.
Referring to fig. 2, in another embodiment of the present invention, a first spring 21 and a first feedback pin 22 are further disposed in the first valve chamber 5, one end of the first spring 21 is connected to one end of the first valve chamber 5 away from the driving device, and the other end of the first spring 21 is connected to one end of the first feedback pin 22; the other end of the first feedback pin 22 is connected with the first valve core 7 in an abutting mode; still be provided with second spring 23 and second feedback pin 24 in the second valve chamber 6, the one end that deviates from drive arrangement is connected at second valve chamber 6 to second spring 23 one end, the second spring 23 other end is connected with second feedback pin 24 one end, the second feedback pin 24 other end is contradicted with second valve core 9 and is connected.
In other embodiments, the first valve chamber 5 is provided with the first valve core 7 on the right, the first valve chamber 5 is provided with the first spring 21 and the first feedback pin 22 on the left, the left end of the first spring 21 is connected to the left end of the first valve chamber 5, and the left end of the first feedback pin 22 can be sleeved in the first spring 21 or connected to the right end of the first spring 21. The first feedback pin 22 is arranged on the left side of the first valve core 7, the first spring 21 can be in a natural straightening state or a slightly compressed state in a state that the first coil 13 is not electrified, the right end of the first feedback pin 22 abuts against the left end of the first valve core 7, when the first coil 13 is electrified, the first valve core 7 is pushed by the movable armature 11 to move leftwards, the first feedback pin 22 is pushed leftwards, the first spring 21 is compressed in the pushing process until the first oil outlet 19 is opened, the circulation of the first flow passage 31 is completed, when the first valve core 7 fails, the first coil 13 is powered off, the movable armature 11 does not provide pushing force for the first valve core 7, and at the moment, the restoring force of the first spring 21 can push the first feedback pin 22 to move rightwards, so that the first valve core 7 is pushed to move rightwards to the original position. The arrangement of the first spring 21 and the first feedback pin 22 provides the first spool 7 with a thrust force of rightward movement so that the first flow passage 31 can be closed in time. The left side of the second valve cavity 6 is provided with a second valve core 9, the right side of the second valve cavity 6 is provided with a second spring 23 and a second feedback pin 24, the right end of the second spring 23 is connected to the right end of the second valve cavity 6, and the right end of the second feedback pin 24 can be sleeved in the second spring 23 or connected to the left end of the second spring 23. The second feedback pin 24 is arranged on the right side of the second valve spool 9, when the second coil 14 is not electrified, the second spring 23 can be in a natural straightening state or a slightly compressed state, the left end of the second feedback pin 24 is abutted against the right end of the second valve spool 9, when the second coil 14 is electrified, the second valve spool 9 is pushed by the movable armature 11 to move rightwards, the second feedback pin 24 is pushed rightwards, the second spring 23 is compressed in the pushing process until the second oil outlet 20 is opened, the circulation of the second flow passage 32 is completed, when the second valve spool 9 is in a fault, the second coil 14 is powered off, the movable armature 11 does not provide pushing force for the second valve spool 9 any more, and at the moment, the restoring force of the second spring 23 can push the second feedback pin 24 to move leftwards, so that the second valve spool 9 is pushed to move leftwards to the original position. The arrangement of the second spring 23 and the second feedback pin 24 provides the second spool 9 with a thrust moving leftward so that the second flow passage 32 can be closed in time.
Referring to fig. 2, in other embodiments of the present invention, the housing 1 is further provided with a first oil drainage port 25 and a second oil drainage port 26, the first oil drainage port 25 is disposed at a side of the first oil outlet 19 away from the driving device, and the second oil drainage port 26 is disposed at a side of the second oil outlet 20 away from the driving device; a third flow passage 33 for medium to flow from the first oil outlet 19 to the first oil drainage port 25 is arranged in the first valve cavity 5, and a fourth flow passage 34 for medium to flow from the second oil outlet 20 to the second oil drainage port 26 is arranged in the second valve cavity 6.
In other embodiments, the third opening of the left cylinder from right to left is a first oil drainage port 25, the outer side of the right end of the first feedback pin 22 abuts against the wall of the first valve chamber 5, the first feedback pin 22 can be provided with a sealing ring to complete sealing with the wall of the first valve chamber 5, a third flow passage 33 for a medium to flow is arranged between the middle of the first feedback pin 22 and the wall of the first valve chamber 5, the third flow passage 33 is communicated with the first oil drainage port 25, when the first coil 13 is powered off, the first oil drainage port 25 can be connected to the left side of the third flow passage 33, the first oil outlet 19 can be connected to the right side of the third flow passage 33, the first oil drainage port 25 is communicated with the first oil outlet 19 through the third flow passage 33, and the waste oil of the clutch 35 can flow into the third flow passage 33 through the first oil outlet 19 and then flow out of the first oil drainage port 25, so as to. The third opening of the right cylinder is a second oil drainage port 26 from left to right, the outer side of the left end of the second feedback pin 24 is abutted to the wall of the second valve cavity 6, the second feedback pin 24 can be provided with a sealing ring to complete sealing between the second feedback pin and the wall of the second valve cavity 6, a fourth flow passage 34 for medium flowing is arranged between the middle of the second feedback pin 24 and the wall of the second valve cavity 6, the fourth flow passage 34 is communicated with the second oil drainage port 26, when the second coil 14 is powered off, the second oil drainage port 26 can be connected to the right side of the fourth flow passage 34, the second oil outlet 20 can be connected to the left side of the fourth flow passage 34, the second oil drainage port 26 is communicated with the second oil outlet 20 through the fourth flow passage 34, waste oil of the clutch 35 can flow into the fourth flow passage 34 through the second oil outlet 20 and then flow out from the second oil drainage. . When the electromagnetic valve is not electrified, the two valve cores are closed, hydraulic oil in the clutch 35 can flow to the first oil outlet 19 and the second oil outlet 20 on the left side and the right side of the electromagnetic valve simultaneously, double-side oil drainage is realized through the first oil drainage port 25 and the second oil drainage port 26 on the two sides, and the oil drainage speed is twice of that of the original one-way control electromagnetic valve.
Referring further to fig. 2, in other embodiments of the present invention, the electromagnet 4 includes a first coil 13 support and a second coil 14 support, the first coil 13 support is disposed between the stationary armature 12 and the first coil 13, and the second coil 14 support is disposed between the stationary armature 12 and the second coil 14.
In other embodiments, a first coil 13 support is disposed between the static armature 12 and the first coil 13, and a second coil 14 support is disposed between the static armature 12 and the second coil 14, wherein the first coil 13 support and the second coil 14 support provide support and protection for the first coil 13 and the second coil 14 to extend the service life of the first coil 13 and the second coil 14. In other embodiments, the static armature 12 is provided with a current control unit 29 between the first coil 13 and the second coil 14, the current control unit 29 is respectively connected with the first coil 13 and the second coil 14, and the current control unit 29 is used for controlling current to alternately connect the first coil 13 and the second coil 14. In other embodiments, the static armature 12 is provided with a current control unit 29 between the first coil 13 and the second coil 14, the current control unit 29 is respectively connected with the first coil 13 and the second coil 14, and the current control unit 29 is used for controlling current to alternately connect the first coil 13 and the second coil 14. In other embodiments, the current control unit 29 is disposed on the outer side of the middle portion of the static armature 12, a through hole through which the current control unit 29 passes is disposed on the housing 1 in a matching manner, interfaces for connecting the first coil 13 and the second coil 14 are disposed on the left and right of the current control unit 29, an interface for connecting a transmission case is disposed on the upper portion of the current control unit 29, and the transmission case can control current to be supplied to the first coil 13 or the second coil 14 through the current control unit 29.
Referring to fig. 3, the present invention further provides a hydraulic clutch system, which includes a clutch 35, a one-way valve 36 and the above dual-control solenoid valve, wherein the dual-control solenoid valve is connected to the one-way valve 36 through the first oil outlet 19 and the second oil outlet 20, and the clutch 35 is provided with a clutch 35 control branch connected to the one-way valve 36.
In this embodiment, as shown in fig. 3, the upper side, the left side, and the right side of the check valve 36 are respectively provided with a valve port, the first oil outlet 19 is connected with the left valve port, the second oil outlet 20 is connected with the right valve port, a filter screen 40 is arranged between the first oil outlet 19 and the check valve 36, and between the second oil outlet 20 and the check valve 36, the valve port on the upper side of the check valve 36 is a main oil outlet, and the main oil outlet is connected with the clutch 35 through the control branch of the clutch 35. The hydraulic oil can enter the one-way valve 36 through the first oil outlet 19 and also through the second oil outlet 20, and flows to the clutch 35 under the control of the one-way valve 36. In other embodiments, a steel ball 39 is arranged in the check valve 36, the steel ball 39 is arranged between the first oil outlet 19 and the second oil outlet 20, the first oil outlet 19 and the second oil outlet 20 are symmetrically arranged on both sides of the check valve 36, and the diameter of the steel ball 39 is larger than the opening sizes of the first oil outlet 19 and the second oil outlet 20. In other embodiments, the steel ball 39 is disposed between the first oil outlet 19 and the second oil outlet 20, the steel ball 39 is larger than the left and right valve ports, when the pressure oil passes through the one-way valve 36 from the first oil outlet 19, the steel ball 39 is pushed to the right, the right valve port is blocked by the steel ball 39, the pressure oil can enter the control branch of the clutch 35 from the left side of the steel ball 39, and the pressure oil cannot be wasted when flowing to the second oil outlet 20, or vice versa. In other embodiments, a spring-loaded accumulator 37 for regulating the oil pressure and a pressure sensor 38 for monitoring the pressure are provided in the control branch of the clutch 35. In other embodiments, the pressure in the control branch of the clutch 35 can be regulated by the spring-loaded accumulator 37, ensuring a steady supply of pressurized oil to the clutch 35. When one side valve core is in fault, the pressure sensor 38 monitors that the pressure is abnormal and transmits a signal of the pressure abnormality to the gearbox, the automatic gearbox control unit changes current supply, the current supply of the first coil 13 is cut off through the current control unit 29, the first valve core 7 is closed under the action of the spring force and supplies power to the second coil 14 to control the second valve core 9 to be opened, the output pressure is controlled by controlling the current, pressure oil passes through the one-way valve 36 to push the steel ball 39 to the left, a valve port on the left side is blocked by the steel ball 39, and the pressure oil enters a control branch of the clutch 35 from the right side of the steel ball 39. When the electromagnet 4 is powered off, the first coil 13 and the second coil 14 do not generate magnetic attraction, the first valve core 7 and the second valve core 9 are respectively connected with the static armature 12 in an abutting mode, the dynamic armature 11 is located at the middle position of the static armature 12, the first flow passage 31 and the second flow passage 32 are closed, the one-way valve 36 is under the action of gravity, the steel ball 39 in the one-way valve 36 is located at the middle position, when waste oil in the clutch 35 flows to the one-way valve 36 through the control branch of the clutch 35, the waste oil flows to the first oil outlet 19 and the second oil outlet 20 from the left side and the right side of the one-way valve 36, and is discharged from the first oil drainage port 25 and the second oil drainage port 26 through the third flow passage 33 and the fourth flow passage 34 respectively, so that double-side simultaneous oil drainage is realized.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A double-control electromagnetic valve is characterized by comprising a shell, a first control valve and a second control valve, wherein a driving device is arranged in the shell;
the first control valve is provided with a first valve sleeve, a first valve cavity and a first valve core, the first valve sleeve is internally provided with the first valve cavity, and the first valve cavity is internally provided with the first valve core;
the second control valve is provided with a second valve sleeve, a second valve cavity and a second valve core, the second valve cavity is arranged in the second valve sleeve, and the second valve core is arranged in the second valve cavity;
the first valve sleeve and the second valve sleeve are connected to two ends of the shell, the first valve core and the second valve core are respectively connected with a driving device, and the driving device is used for driving the first valve core to move in the first valve cavity or driving the second valve core to move in the second valve cavity;
a first valve cavity is formed in the valve body, and a first valve cavity is formed in the valve body; and a second oil inlet and a second oil outlet are formed in the second valve sleeve, and a second flow channel for allowing a medium to flow from the second oil inlet to the second oil outlet is formed in the second valve cavity.
2. The double control electromagnetic valve according to claim 1, wherein the driving device comprises a movable armature, a static armature, a first coil and a second coil, the static armature is arranged between the first valve chamber and the second valve chamber, the first coil is arranged around the outer side surface of the static armature in the direction close to the first valve chamber, the second coil is arranged around the outer side surface of the static armature in the direction close to the second valve chamber, and the first coil and the second coil generate opposite acting forces when being electrified; the movable armature moves towards the first opening or the second opening when the first coil or the second coil is electrified so as to drive the first valve core or the second valve core to move in the first valve cavity or the second valve cavity.
3. The dual control solenoid valve of claim 2 wherein the first spool includes a first extension disposed at the first opening, the first extension abutting an end of the movable armature through the first opening; the second valve core comprises a second extending piece arranged at the second opening, and the second extending piece penetrates through the second opening to abut against the other end of the movable armature.
4. The dual control electromagnetic valve according to claim 3, wherein a first spring and a first feedback pin are further disposed in the first valve chamber, one end of the first spring is connected to one end of the first valve chamber facing away from the driving device, and the other end of the first spring is connected to one end of the first feedback pin; the other end of the first feedback pin is in abutting connection with the first valve core; the second valve cavity is internally provided with a second spring and a second feedback pin, one end of the second spring is connected to one end of the second valve cavity, which is away from the driving device, the other end of the second spring is connected with one end of the second feedback pin, and the other end of the second feedback pin is abutted against the second valve core.
5. The dual-control electromagnetic valve as claimed in claim 3, wherein the housing is further provided with a first oil drainage port and a second oil drainage port, the first oil drainage port is arranged at one side of the first oil outlet, which is far away from the driving device, and the second oil drainage port is arranged at one side of the second oil outlet, which is far away from the driving device; and a third flow passage for allowing a medium to flow from the first oil outlet to the first oil drainage port is arranged in the first valve cavity, and a fourth flow passage for allowing the medium to flow from the second oil outlet to the second oil drainage port is arranged in the second valve cavity.
6. The dual control solenoid valve of claim 2 wherein the drive means further comprises a first coil support disposed between the stationary armature and the first coil and a second coil support disposed between the stationary armature and the second coil.
7. The dual control solenoid valve as claimed in claim 6, wherein the static armature is provided with a current control unit between the first coil and the second coil, the current control unit is connected with the first coil and the second coil respectively, and the current control unit is used for controlling current to alternately connect the first coil and the second coil.
8. A hydraulic clutch system, characterized in that the hydraulic clutch system comprises a clutch, a one-way valve and a double control solenoid valve according to any one of claims 1 to 7, the double control solenoid valve is connected with the one-way valve through a first oil outlet and a second oil outlet, and the clutch is provided with a clutch control branch connected with the one-way valve.
9. The hydraulic clutching system of claim 8, wherein a steel ball is disposed within the one-way valve, the steel ball is disposed between the first oil outlet and the second oil outlet, the first oil outlet and the second oil outlet are symmetrically disposed on both sides of the one-way valve, and a diameter of the steel ball is greater than an opening size of the first oil outlet and the second oil outlet.
10. The hydraulic clutch system according to claim 8, wherein a spring-type accumulator for regulating oil pressure and a pressure sensor for monitoring pressure are provided on the clutch control branch.
CN202011397038.9A 2020-12-02 2020-12-02 Double-control electromagnetic valve and hydraulic clutch system Active CN112555299B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN112555299B CN112555299B (en) 2022-06-14

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CN111075789A (en) * 2020-01-06 2020-04-28 北京瑞赛长城航空测控技术有限公司 Hydraulic protection device with redundancy for electro-hydraulic servo control system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040250861A1 (en) * 2003-06-12 2004-12-16 Schnell Richard E. Redundant valve system
US20050150554A1 (en) * 2004-01-13 2005-07-14 Schnell Richard E. Redundant valve system
CA2458099A1 (en) * 2004-02-19 2005-08-19 Cdk Services Ltd. Linear fluid drive system with detent
CN101542133A (en) * 2006-11-15 2009-09-23 罗伯特.博世有限公司 Hydraulic two-circuit system and interconnecting valve arrangement
DE102010009085B3 (en) * 2010-02-24 2011-03-10 Parker Hannifin Gmbh Hydraulic control valve for controlling double-action operating cylinder, has recess laid out in collar on fluid flow squeezed out of small volume of cylinder during slow movement and exhibiting dimension smaller than remaining recesses
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