CN112594295B - Valve device with high-pressure low-rotation-speed oil injection and high-pressure high-rotation-speed oil drainage functions - Google Patents
Valve device with high-pressure low-rotation-speed oil injection and high-pressure high-rotation-speed oil drainage functions Download PDFInfo
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- CN112594295B CN112594295B CN202011567052.9A CN202011567052A CN112594295B CN 112594295 B CN112594295 B CN 112594295B CN 202011567052 A CN202011567052 A CN 202011567052A CN 112594295 B CN112594295 B CN 112594295B
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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
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
- F16D25/14—Fluid pressure control
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Abstract
The invention aims to provide a valve device with functions of high-pressure low-rotating-speed oil injection and high-pressure high-rotating-speed oil drainage. The left end face of the one-way valve body is provided with a rotary sealing movable ring, and a piston rod penetrates through the centers of the rotary sealing static ring and the movable ring. When the rotating speed is low, the electromagnetic valve of the actuator is electrified, the piston moves, the ejector rod pushes the one-way valve core, the oil injection electromagnetic valve is electrified, and high-pressure working oil flows into the one-way valve through the radial oil inlet hole of the adapter plate, the rotary seal and the radial gap of the piston rod to inject oil into the rotary oil cylinder. When the rotating speed is high, the electromagnetic valve of the actuator is electrified, the ejector rod pushes the one-way valve core, the oil injection electromagnetic valve is powered off, the oil inlet hole is communicated with the oil return channel of the electromagnetic valve, and oil drainage of the rotary oil cylinder at the high rotating speed can be realized. When high-pressure low-rotation-speed oil injection and high-pressure high-rotation-speed oil drainage are carried out, the PV value of the rotary seal is very small, and the service life of the rotary seal is long.
Description
Technical Field
The invention relates to a friction clutch, in particular to an oil valve of the friction clutch.
Background
At present, a method of communicating an oil source and an oil inlet channel through a rotary seal is generally adopted for oil injection and oil drainage of a rotary oil cylinder of a friction clutch, but with the improvement of the rotating speed and the oil supply pressure of the friction clutch, the design and processing difficulty of the rotary seal is more and more large, the common index for examining the difficulty of the rotary seal is a PV value, P is the oil supply pressure, V is the linear velocity of the rotary seal, and the oil injection and oil drainage of the rotary seal can not be realized even in certain occasions with large PV values.
Disclosure of Invention
The invention aims to provide a valve device with functions of high-pressure low-rotation-speed oil injection and high-pressure high-rotation-speed oil drainage, which can perform oil injection at high oil pressure and low rotation speed and oil drainage at high oil pressure and high rotation speed, avoids continuous oil supply by adopting a high-pressure high-speed rotary seal, and reduces the design and processing difficulties of an oil injection and oil drainage device.
The purpose of the invention is realized as follows:
the invention relates to a valve device with functions of high-pressure low-rotation-speed oil injection and high-pressure high-rotation-speed oil drainage, which is characterized in that: the rotary oil cylinder is connected with the connecting shaft and rotates along with the rotary oil cylinder, the connecting shaft is supported on the supporting shell through a bearing, the switching disc is connected to the supporting shell and is concentric with the connecting shaft, the actuator cylinder body is connected to the switching disc and is concentric with the connecting shaft, one part of the one-way valve body is positioned in the connecting shaft, the rest part of the one-way valve body is positioned in the switching disc, the end part of the one-way valve body is attached to the rotary sealing static ring, and the rotary sealing static ring is positioned in the switching disc;
the piston is positioned in the actuator cylinder body, the piston rod is positioned in the adapter disc, the ejector rod is positioned in the one-way valve body, one end of the piston rod extends out of the adapter disc and is connected with the piston, the other end of the piston rod extends out of the adapter disc and is connected with the ejector rod, a piston reset spring is sleeved on the piston rod in the actuator cylinder body, a rotary seal pressing spring is sleeved on the piston rod in the adapter disc, an actuator oil inlet is formed in the actuator cylinder body and is connected with an actuator electromagnetic valve, a rotary seal oil inlet hole is formed in the adapter disc, and the rotary seal oil inlet hole is connected with an oil injection electromagnetic valve;
the check valve comprises a check valve body, a check valve core and a check valve spring baffle, wherein a check valve spring is arranged between the check valve core and the check valve spring baffle, one end of the check valve core is a valve core top surface, the other end of the check valve core is a valve core concave surface, the valve core concave surface is connected with the valve core top surface and is a valve core sealing conical surface, the valve core reducing surface is connected with the valve core sealing conical surface and is a valve core guide surface, the valve core top surface is matched with an ejector rod, the valve core concave surface is provided with a valve core spring positioning hole, the check valve spring is matched with the valve core spring positioning hole, a valve core transverse hole and a valve core central hole are arranged in the check valve core, the valve core transverse hole is communicated with the valve core central hole, the end face of the valve core transverse hole is positioned on the valve core reducing surface, and the end face of the valve core central hole is positioned on the bottom surface of the valve core spring positioning hole.
The present invention may further comprise:
1. a one-way valve spring baffle center hole is formed in the one-way valve spring baffle, an oil duct is formed in the connecting shaft, and the oil duct is respectively communicated with the one-way valve spring baffle center hole and the rotary oil cylinder.
2. The terminal surface that the switching dish links to each other with the actuator cylinder body sets up the protruding ring of left end, and the protruding ring of left end stretches into in the actuator cylinder body to provide spacing for the piston.
3. The static ring of rotary seal and piston rod complex position are the static ring hole of rotary seal, and check valve body and piston rod complex position are the rotary seal rotating ring hole, have the clearance that supplies working oil, lubricating oil to flow through between piston rod and the static ring hole of rotary seal and the rotary seal rotating ring hole, and there is the clearance that supplies working oil, lubricating oil to flow through ejector pin and check valve body cooperation department.
4. An isolation one-way valve is bypassed on an oil way of the oil injection electromagnetic valve communicated with the rotary seal oil inlet hole, an outlet of the isolation one-way valve is communicated with the rotary seal oil inlet hole, an inlet of the isolation one-way valve is communicated with lubricating oil, when the oil injection electromagnetic valve is electrified, working oil is communicated with the rotary seal oil inlet hole, the outlet pressure of the isolation one-way valve is increased, the one-way valve is automatically closed under the action of the working oil pressure, and the lubricating oil way is stopped; when the oil injection electromagnetic valve is powered off, the pressure of the outlet of the isolating one-way valve is lowered, the isolating one-way valve is opened under the action of the pressure of lubricating oil, the lubricating oil is divided into two paths, one path of the lubricating oil leads to the rotary seal oil inlet hole, and the other path of the lubricating oil flows back to the oil tank through the oil injection electromagnetic valve.
5. When an oil inlet of the actuator is communicated with control oil of the actuator, the piston moves rightwards, the ejector rod is contacted with the top surface of the valve core of the one-way valve core and pushes the valve core to move rightwards, and the one-way valve is opened; when the oil inlet of the actuator is disconnected with the control oil of the actuator, the piston moves leftwards under the pushing of the piston return spring, meanwhile, the check valve spring pushes the valve element to move leftwards, and the check valve is closed.
The invention has the advantages that: the invention solves the problem of realizing oil injection and oil drainage of the high-pressure and high-speed rotary oil cylinder, avoids adopting high-pressure and high-speed rotary seal for continuous oil supply, and reduces the design and processing difficulty of the oil injection and oil drainage device.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a check valve core;
FIG. 3 is a schematic view of the check valve and piston rod configuration;
FIG. 4 is a schematic view of the oiling state of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4;
FIG. 6 shows the piston rod retreating and the one-way valve closing state during the oil injection process;
FIG. 7 is a state of oil drainage by the piston rod extending, the check valve opening, and the rotary cylinder during oil drainage;
fig. 8 is a partially enlarged view of fig. 7.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
referring to fig. 1 to 8, a friction clutch rotary cylinder having a micro-leakage or zero-leakage characteristic is rigidly mounted on a connecting shaft 200, the connecting shaft 200 is supported on a support housing 300 through a bearing, and the connecting shaft 200 rotates following the rotary cylinder. The core part of the connecting shaft 200 is an oil passage 210, and the oil passage 210 is communicated with the rotary cylinder. At the end of the connecting shaft 200, the actuator cylinder 10, the piston 20, the piston rod 23, the ejector rod 24, the adapter plate 30, the sealing spring, the rotary sealing stationary ring, the check valve body 60, the check valve core 70, the check valve spring 80, and the check valve spring baffle 90 are concentrically arranged and mechanically connected in sequence.
A check valve mounting hole 220 is formed at a free end of the connecting shaft 200, and the check valve mounting hole 220 is concentrically arranged with the oil passage 210 and the connecting shaft 200. The valve body outer cylindrical surface 69 at the right end of the check valve body 60 is tightly connected with the check valve mounting hole 220, and the check valve body seal 230 is in contact with the valve body outer cylindrical surface 69 to form a static seal.
The check valve core 70 is installed in the check valve core guide hole 68 to be slidable left and right. The check valve spring retainer 90 is mounted in the retainer locating hole 63 at the right end of the check valve body 60. A spool spring positioning hole 78 is located at the right end of the check spool 70 concentric with the spool guide surface 76. One end of the check valve spring 80 is tightly pressed in the valve core spring positioning hole 78, and the other end of the check valve spring 80 is tightly pressed on the check valve spring baffle 90, and the check valve spring 80 provides a reset force for the check valve core 70. The left end of the check valve body 60 is provided with a rotary seal moving ring sealing surface 64.
The adapter plate 30 is attached to the support housing 300 concentrically with the connection shaft 200. The cylindrical actuator cylinder 10 is connected to the adapter plate 30 concentrically with the connecting shaft 200, and the actuator cylinder 10 and the adapter plate 30 are sealed by an actuator cylinder seal 16.
The center of the actuator cylinder 10 is a cylindrical hollow structure, and the cylindrical piston 20 can slide left and right inside the actuator cylinder 10. The piston 20 and the actuator cylinder 10 form an actuator oil inlet chamber 14, and the left end surface of the actuator cylinder 10 is provided with an actuator oil inlet 12 communicated with the actuator oil inlet chamber 14.
The protruding ring at the left end of the adapter plate 30 provides a limit for the piston 20.
The piston rod 23 passes through a piston rod guide hole 32 in the center of the left end of the adapter plate 30, an annular piston rod seal 34 is arranged in the middle of the axial width of the piston rod guide hole 32, and the piston rod seal 34 and the piston rod 23 form a sliding seal.
The center of the right end of the adapter plate 30 is a cylindrical flat-bottomed blind hole: the rotary seal static ring positioning hole 36, the rotary seal static ring 50 can slide in the rotary seal static ring positioning hole 36, and the rotary seal pressing spring 40 is located between the rotary seal static ring 50 and the bottom edge of the rotary seal static ring positioning hole 36. The rotary seal pressing spring 40 pushes the rotary seal static ring 50 to press on the rotary seal moving ring sealing surface 64, and the rotary seal static ring sealing surface 54 of the rotary seal static ring 50 and the rotary seal moving ring sealing surface 64 form a rotary seal. The right end of the rotary seal static ring positioning hole 36 is provided with a static ring seal 38, and the static ring seal 38 and the rotary seal static ring 50 form sliding seal.
The center of the rotary sealing static ring 50 is provided with a through hole: the stationary ring inner bore 52 is sealed rotationally. The center of the rotary sealing movable ring sealing surface 64 at the left end of the one-way valve body 60 is provided with a through hole: the seal rotating ring inner bore 62 is rotated.
The piston rod 23 passes through the rotary seal stationary ring inner bore 52 and the rotary seal moving ring inner bore 62 with a clearance therebetween. The right end of the piston rod 23 is provided with a cylindrical carrier rod 24.
When the actuator oil inlet 12 is communicated with the actuator control oil, the piston 20 moves to the right, the ejector rod 24 contacts with the valve core top surface 72 of the check valve core 70 and pushes the valve core 70 to move to the right, and the check valve is opened. When the actuator control oil is disconnected from the actuator oil inlet 12, the piston 20 moves leftwards under the pushing of the piston return spring 22. At the same time, the check valve spring 80 pushes the valve element 70 to move leftward, and the check valve is closed.
The oil injection solenoid valve 400 is a 2-to-3 power-on solenoid valve and is provided with 1 electromagnet, and when the electromagnet of the oil injection solenoid valve 400 is powered off, the rotary seal oil inlet hole 37 is communicated with an oil return channel of the solenoid valve; when the electromagnet of the oil injection solenoid valve 400 is electrified, the rotary seal oil inlet hole 37 is communicated with the high-pressure working oil channel.
The actuator electromagnetic valve 500 is a 2-position 3-way electromagnetic valve and is provided with 1 electromagnet, and when the electromagnet of the actuator electromagnetic valve 500 is powered off, an oil inlet hole of the actuator is communicated with an electromagnetic valve oil return channel; when the electromagnet of the actuator electromagnetic valve 500 is electrified, the oil inlet hole of the actuator is communicated with the control oil channel of the actuator. The outlet of the isolating one-way valve 600 is communicated with the rotary sealing oil inlet hole 37, and the inlet of the isolating one-way valve 600 is communicated with the lubricating oil. When the electromagnet of the oil injection electromagnetic valve 400 is electrified, the working oil is communicated with the rotary seal oil inlet 37, so that the outlet pressure of the isolation check valve 600 is increased, the check valve 600 is automatically closed under the action of the working oil pressure, the lubricating oil path is cut off, and the rotary seal is lubricated by the working oil at the moment.
When the electromagnet of the oil injection electromagnetic valve 400 is powered off, the pressure at the outlet of the isolating one-way valve 600 is lowered, the isolating one-way valve 600 is opened under the action of the pressure of lubricating oil, the lubricating oil is divided into two paths, one path of the lubricating oil is used for lubricating the rotary seal, and the other path of the lubricating oil flows back to the oil tank through the oil injection electromagnetic valve 400.
In fig. 2, the valve core 70 is a stepped cylinder, the diameter of the left end is small and is a valve core reducing surface 74, the diameter of the right end is large and is a valve core guiding surface 76, the valve core reducing surface 74 at the left end of the valve core 70 is made into a conical surface to form a valve core sealing conical surface 73, and the left end surface of the valve core 70 is a valve core top surface 72. The axial length middle part of the valve core reducing surface 74 is provided with a through transverse hole: a valve core transverse hole 75, a valve core central hole 77 is formed in the center of the right end of the valve core 70, and the valve core central hole 77 is communicated with the valve core transverse hole 75. The center of the right end face of the valve core 70 is provided with a valve core spring positioning hole 78, and the diameter of the valve core spring positioning hole 78 is larger than that of the valve core central hole 77, and the depth of the valve core spring positioning hole 78 is smaller. The diameter of the valve core guide surface 76 is d7, the diameter of the mandril through hole 66 is d6, d7> d6, so when the pressures on the two sides of the valve core are equal, the force applied to the right side of the valve core is larger, and the pressure is multiplied by the area, so that the valve core moves leftwards to close the one-way valve. The diameter of the piston 20 is d5, d5> d7, therefore, under the same pressure, the force generated by the piston 20 is larger than the force applied to the right side of the valve core 70, and the valve core can move to the right, so that the valve core is opened to fill oil or drain oil.
In fig. 3, the static rotary seal ring 50 is composed of a static rotary seal ring sealing surface 51, a static rotary seal ring inner hole 52 and a static rotary seal ring sealing surface 54, the outer diameter 55 of the static rotary seal ring sealing surface is d3, the inner diameter 53 of the static rotary seal ring sealing surface is d4, the inner hole 52 of the static rotary seal ring is d1, the diameter of the static rotary seal ring guiding surface 51 is d2,
the relationships d1, d2, d3 and d4 are as follows:
d3>d2>d4>d1
when the working oil pressure is P1, the contact pressure PS of the rotary seal stationary ring sealing surface 54 is:
PS＝P1(d22-d12)/(d32-d42)
it can be seen that PS < P1, by increasing d1 or decreasing d4, PS can be reduced under the condition that the working oil pressure is P1, that is, the contact pressure of the static ring sealing surface 54 of the rotary seal is reduced, so that when the working oil pressure is P1 too high, PS is prevented from being too high, and the service life of the static ring sealing surface 54 of the rotary seal is prolonged.
The piston rod 23 extends through the rotary seal stationary ring bore 52 and the rotary seal moving ring bore 62. A large clearance exists between the piston rod 23 and the rotary seal stationary ring inner bore 52 and the rotary seal moving ring inner bore 62, and working oil and lubricating oil can flow through the clearance. The mandril 24 passes through the mandril through hole 66 of the one-way valve body, a larger gap also exists between the mandril and the one-way valve body, and working oil and lubricating oil can flow through the gap to enter the valve core 70
In fig. 4 and 5, the connecting shaft 200 is at a standstill or rotates at a low speed, the coils of the oil injection solenoid valve 400 and the actuator solenoid valve 500 are both energized, the actuator control oil enters the actuator oil inlet chamber 14 through the actuator solenoid valve 500, the piston 20 is pushed to move leftwards and then limited by the support housing 300, and the ejector rod 24 ejects the check valve core 70. The working oil enters the oil channel 210 through the oil filling electromagnetic valve 400, the rotary seal oil inlet hole 37, the gap between the piston rod 23 and the rotary seal static ring inner hole 52 and the rotary seal moving ring inner hole 62 and the one-way valve core 70 to fill the friction clutch rotary oil cylinder with oil. Because the pressure of the working oil is greater than the pressure of the lubricating oil, the isolating check valve 600 automatically closes when the coil of the solenoid valve 400 is energized. During oil injection, although the working oil pressure is high, the rotary seal moving ring sealing surface 64 rotates at a low speed, and the PV value on the rotary seal moving ring sealing surface 64 is small.
In fig. 6, when the oil injection pressure is required, the coil of the oil injection solenoid valve 400 is kept energized, the coil of the actuator solenoid valve 500 is de-energized, and the piston 20 is retracted by the piston return spring 22. Meanwhile, the check valve core 70 moves leftward under the action of the check valve spring 80 and the internal working oil pressure, and the check valve is closed when the valve core sealing conical surface 73 contacts the check valve body sealing surface 67. The friction clutch rotating oil cylinder is a zero-leakage or micro-leakage oil cylinder, and the internal pressure of the friction clutch rotating oil cylinder is kept after the one-way valve is closed. After the low-speed oil injection is finished, the coil of the oil injection electromagnetic valve 400 is powered off, and the friction clutch and the connecting shaft 200 start to rotate at a high speed under the driving of the host machine. After the coil of the oil injection electromagnetic valve 400 is powered off, the pressure of lubricating oil enables the isolation one-way valve 600 to be opened, at the moment, although the rotary seal moving ring sealing surface 64 rotates at a high speed, the pressure of the lubricating oil is far lower than that of high-pressure working oil, and the PV value on the rotary seal moving ring sealing surface 64 is still small at the moment.
In fig. 7 and 8, when the connecting shaft 200 rotates at a high speed, the coil of the oil injection solenoid valve 400 is kept powered off, the coil of the actuator solenoid valve 500 is powered on, the piston 20 moves leftwards and then is limited by the support housing 300, and the push rod 24 pushes the one-way valve core 70 open. Oil in the friction clutch rotary oil cylinder flows out through the inlet oil passage 210, the one-way valve core 70, a gap between the piston rod 23 and the rotary seal stationary ring inner hole 52 and the rotary seal moving ring inner hole 62, the rotary seal oil inlet hole 37 and the oil injection electromagnetic valve 400, and oil drainage at a high rotating speed is realized.
Claims (6)
1. The utility model provides a valve gear with high-pressure low rotational speed oiling, high-pressure high rotational speed draining function, characterized by: the rotary oil cylinder is connected with the connecting shaft and rotates along with the rotary oil cylinder, the connecting shaft is supported on the supporting shell through a bearing, the switching disc is connected to the supporting shell and is concentric with the connecting shaft, the actuator cylinder body is connected to the switching disc and is concentric with the connecting shaft, one part of the one-way valve body is positioned in the connecting shaft, the rest part of the one-way valve body is positioned in the switching disc, the end part of the one-way valve body is attached to the rotary sealing static ring, and the rotary sealing static ring is positioned in the switching disc;
the piston is positioned in the actuator cylinder body, the piston rod is positioned in the adapter disc, the ejector rod is positioned in the one-way valve body, one end of the piston rod extends out of the adapter disc and is connected with the piston, the other end of the piston rod extends out of the adapter disc and is connected with the ejector rod, a piston reset spring is sleeved on the piston rod in the actuator cylinder body, a rotary seal pressing spring is sleeved on the piston rod in the adapter disc, an actuator oil inlet is formed in the actuator cylinder body and is connected with an actuator electromagnetic valve, a rotary seal oil inlet hole is formed in the adapter disc, and the rotary seal oil inlet hole is connected with an oil injection electromagnetic valve;
the check valve comprises a check valve body, a check valve core and a check valve spring baffle, wherein a check valve spring is arranged between the check valve core and the check valve spring baffle, one end of the check valve core is a valve core top surface, the other end of the check valve core is a valve core concave surface, the valve core concave surface is connected with the valve core top surface and is a valve core sealing conical surface, the valve core reducing surface is connected with the valve core sealing conical surface and is a valve core guide surface, the valve core top surface is matched with an ejector rod, the valve core concave surface is provided with a valve core spring positioning hole, the check valve spring is matched with the valve core spring positioning hole, a valve core transverse hole and a valve core central hole are arranged in the check valve core, the valve core transverse hole is communicated with the valve core central hole, the end face of the valve core transverse hole is positioned on the valve core reducing surface, and the end face of the valve core central hole is positioned on the bottom surface of the valve core spring positioning hole.
2. The valve device with the functions of high-pressure low-rotating-speed oil injection and high-pressure high-rotating-speed oil drainage as claimed in claim 1, which is characterized in that: a one-way valve spring baffle center hole is formed in the one-way valve spring baffle, an oil duct is formed in the connecting shaft, and the oil duct is respectively communicated with the one-way valve spring baffle center hole and the rotary oil cylinder.
3. The valve device with the functions of high-pressure low-rotating-speed oil injection and high-pressure high-rotating-speed oil drainage as claimed in claim 1, which is characterized in that: the terminal surface that the switching dish links to each other with the actuator cylinder body sets up the protruding ring of left end, and the protruding ring of left end stretches into in the actuator cylinder body to provide spacing for the piston.
4. The valve device with the functions of high-pressure low-rotating-speed oil injection and high-pressure high-rotating-speed oil drainage as claimed in claim 1, which is characterized in that: the static ring of rotary seal and piston rod complex position are the static ring hole of rotary seal, and check valve body and piston rod complex position are the rotary seal rotating ring hole, have the clearance that supplies working oil, lubricating oil to flow through between piston rod and the static ring hole of rotary seal and the rotary seal rotating ring hole, and there is the clearance that supplies working oil, lubricating oil to flow through ejector pin and check valve body cooperation department.
5. The valve device with the functions of high-pressure low-rotating-speed oil injection and high-pressure high-rotating-speed oil drainage as claimed in claim 1, which is characterized in that: an isolation one-way valve is bypassed on an oil way of the oil injection electromagnetic valve communicated with the rotary seal oil inlet hole, an outlet of the isolation one-way valve is communicated with the rotary seal oil inlet hole, an inlet of the isolation one-way valve is communicated with lubricating oil, when the oil injection electromagnetic valve is electrified, working oil is communicated with the rotary seal oil inlet hole, the outlet pressure of the isolation one-way valve is increased, the one-way valve is automatically closed under the action of the working oil pressure, and the lubricating oil way is stopped; when the oil injection electromagnetic valve is powered off, the pressure of the outlet of the isolating one-way valve is lowered, the isolating one-way valve is opened under the action of the pressure of lubricating oil, the lubricating oil is divided into two paths, one path of the lubricating oil leads to the rotary seal oil inlet hole, and the other path of the lubricating oil flows back to the oil tank through the oil injection electromagnetic valve.
6. The valve device with the functions of high-pressure low-rotating-speed oil injection and high-pressure high-rotating-speed oil drainage as claimed in claim 1, which is characterized in that: when an oil inlet of the actuator is communicated with control oil of the actuator, the piston moves rightwards, the ejector rod is contacted with the top surface of the valve core of the one-way valve core and pushes the valve core to move rightwards, and the one-way valve is opened; when the oil inlet of the actuator is disconnected with the control oil of the actuator, the piston moves leftwards under the pushing of the piston return spring, meanwhile, the check valve spring pushes the valve element to move leftwards, and the check valve is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011567052.9A CN112594295B (en) | 2020-12-25 | 2020-12-25 | Valve device with high-pressure low-rotation-speed oil injection and high-pressure high-rotation-speed oil drainage functions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011567052.9A CN112594295B (en) | 2020-12-25 | 2020-12-25 | Valve device with high-pressure low-rotation-speed oil injection and high-pressure high-rotation-speed oil drainage functions |
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| CN112594295A CN112594295A (en) | 2021-04-02 |
| CN112594295B true CN112594295B (en) | 2022-04-08 |
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| CN113483088B (en) * | 2021-07-22 | 2022-06-14 | 中国船舶重工集团公司第七0三研究所 | Marine gear box friction clutch input shaft assembly with oil supply device |
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