Electric control poppet valve of tractor

Abstract

The invention provides a tractor electric control lift valve which comprises an electric control assembly and a lift assembly, the electric control assembly comprises a valve body and a valve element, the lift assembly comprises a hydraulic cylinder and a hydraulic pipe, an inlet and outlet assembly is installed on the valve body, the inlet and outlet assembly comprises an inlet and an outlet, and a switch assembly is installed on the valve body. The electric control lift valve of the tractor is characterized in that the top and the bottom of the valve element can be kept in hydraulic balance through a middle hole, the valve element is arranged in the middle hole, the valve element is arranged in the middle hole, and the valve element is arranged in the middle hole. Therefore, the movement of the piston and the valve core is not interfered by the oil pressure of hydraulic oil, the electric control lift valve can be effectively ensured to stably open and close under high pressure, the piston and the valve core are locked, the valve core is prevented from moving when being impacted by the hydraulic oil and vibrated, the sealing effect during closing is ensured, and the service life of the electric control lift valve is prolonged. The hydraulic lifting device is suitable for hydraulic lifting control of tractors.

Description

Technical Field

[0001] The invention relates to the technical field of electronically controlled lifting valve equipment, in particular to an electronically controlled lifting valve for a tractor. Background Art

[0002] When the tractor is working, it is often necessary to use an electric-controlled lifting valve device to perform hydraulic control of the tractor lifting system. The invention patent with patent application number CN201910291527.7 discloses an electric-controlled lifting priority integrated valve for tractors. The electric-controlled lifting priority integrated valve uses an electric-controlled lifting valve block with a pressure feedback signal, and superimposes a priority valve block integrated with a priority valve and a safety valve. It is not only compact in structure, convenient in layout, and simple in system piping, but also has perfect lifting system functions and reliable performance. Moreover, under the condition of meeting the lifting priority, the hydraulic output and lifting can work at the same time. According to the disclosed technical solution, when the existing electric-controlled lifting valve equipment is in use, on the one hand, when opening and closing the hydraulic management, it is easy for the electric-controlled lifting valve to be unable to overcome the hydraulic pressure to be fixed due to excessive hydraulic pressure, which is not conducive to stable operation under high pressure. On the other hand, when connecting the pipelines, it is easy for the connection to leak due to the large hydraulic pressure, which is not conducive to ensuring the sealing of the pipeline connection. On the other hand, after the electric-controlled lifting valve is closed, the valve core is easy to move due to hydraulic shock or equipment vibration, which is not conducive to ensuring the sealing effect when closed. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an electronically controlled lifting valve for a tractor to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure and various functions and is suitable for use in the hydraulic lifting control of tractors.

[0004] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: a tractor electronically controlled lifting valve, comprising an electronically controlled component and a lifting component, the electronically controlled component comprising a valve body and a valve core, the lifting component comprising a hydraulic cylinder and a hydraulic pipe, an inlet and outlet component is installed on the valve body, the inlet and outlet component comprises an inlet and an outlet, a switch component is installed on the valve body, the switch component comprises an electromagnet 1 and a piston, a sealing component is installed on the inlet and the outlet, the sealing component comprises a sleeve and a rubber ring, a pressure relief component is installed on the valve core, the pressure relief component comprises a middle hole and a side hole, a locking component is installed on the valve body, the locking component comprises an electromagnet 2 and a bayonet.

[0005] Furthermore, the inlet is welded to the bottom of the valve body, the outlet is welded to one side of the valve body, and both the inlet and the outlet are connected to the inner side of the valve body.

[0006] Furthermore, the piston is integrally formed on the top of the valve core, the outer diameter of the valve core is equal to the inner diameter of the top of the valve body, and the outer diameter of the piston is equal to the inner diameter of the top of the valve body.

[0007] Furthermore, the middle hole is respectively opened at the center of the valve core and the piston, the top of the valve body is connected to the bottom of the valve body through the middle hole, the side holes are opened around the piston, and the top of the piston is connected to the bottom of the piston through the side holes.

[0008] Furthermore, the seals are welded to the bottom and one side of the valve body respectively, and are respectively sleeved on the outside of the inlet and the outlet. An annular groove is provided on the inside of the seal, and the rubber ring is bonded to the inside of the annular groove.

[0009] Furthermore, the inlet, the outlet and the inner side of the sealing sleeve are all provided with connecting pipes, and the rubber ring is respectively connected with the inlet or the outlet through the connecting pipes.

[0010] Furthermore, a sealing ring is installed on the inner wall of the valve body, and the sealing ring is sleeved on the outer side of the valve core. The bottom of the valve body is integrally formed with an insert ring, and the bottom of the valve core is provided with a socket, and the socket is sleeved on the outer side of the insert ring.

[0011] Furthermore, an inner groove is provided on the inner wall on the other side of the valve body, the second electromagnet is welded to the inner side of the inner groove, and a bayonet is provided on the other side of the piston, one end of the bayonet pin is clamped on the inner side of the inner groove, and the other end of the bayonet pin passes through the inner groove and extends to the inner side of the bayonet, and the bayonet pin is connected to the second electromagnet through a second spring.

[0012] Furthermore, the electromagnet 1 is welded to the inner wall of the top of the valve body, and the piston is connected to the electromagnet 1 through a spring 1.

[0013] Furthermore, the valve bodies are respectively installed on both sides of the hydraulic cylinder, and the valve bodies are respectively connected to the inner sides of the top and bottom of the hydraulic cylinder through hydraulic pipes, and the valve bodies are connected to each other through the hydraulic pipes.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. When the tractor's electronically controlled lifting valve is in use, when it is necessary to open the electronically controlled lifting valve, the electromagnet is energized to generate magnetic force, which attracts the piston upward, and the piston drives the valve core to move upward, so that the inlet and outlet are connected to each other through the valve body, so that the hydraulic oil can flow smoothly. After closing, the spring pushes the piston downward, and the piston drives the valve core to move downward. The inlet and outlet are isolated by the valve core, and the top and bottom of the valve core maintain hydraulic balance through the middle hole, and the top and bottom of the piston maintain hydraulic balance through the side hole, so that the movement of the piston and the valve core will not be disturbed by the oil pressure of the hydraulic oil, thereby effectively ensuring that the electronically controlled lifting valve can perform stable opening and closing operations under high pressure.

[0016] 2. When the tractor electronically controlled lifting valve is in use, when the inlet and outlet are connected to the hydraulic pipe, the hydraulic pipe is arranged on the outer side of the inlet or outlet through a threaded sleeve, and the sealing sleeve is clamped on the outer side of the hydraulic pipe. The hydraulic oil in the hydraulic pipe flows into the inner side of the inlet and outlet, and then the hydraulic oil enters the inner side of the rubber ring through the connecting pipe, so that the rubber ring expands under the pressure of the hydraulic pressure and seals the outer side of the hydraulic pipe, thereby effectively ensuring the connection firmness and sealing of the inlet and outlet. The valve core is sealed by the sealing ring in the closed state, and the bottom of the valve core is sealed on the outer side of the plug ring through the socket, thereby effectively ensuring the sealing effect between the inlet and outlet and avoiding hydraulic leakage.

[0017] 3. When the tractor's electronically controlled lifting valve is in use, when the electromagnet 1 is closed, the spring 1 pushes the piston downward, and the piston first pushes the bayonet pin to the inner side of the inner groove. Then, when the piston drives the valve core to be completely clamped at the bottom of the valve body, the bayonet pin and the bayonet port are aligned, and the spring 2 pushes the bayonet pin to the inner side of the bayonet port, thereby effectively locking the piston and the valve core to prevent the valve core from moving when subjected to hydraulic shock and vibration, thereby effectively ensuring the sealing effect of the electronically controlled lifting valve when it is closed. When the electronically controlled lifting valve needs to be opened, the electromagnet 2 is opened synchronously, and the electromagnet 2 pulls the bayonet pin out from the inner side of the bayonet port through magnetic force, so that the piston and the valve core can move smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of an electronically controlled lifting valve for a tractor according to the present invention;

[0019] Figure 2 A cross-sectional view of an electronically controlled lifting valve for a tractor according to the present invention;

[0020] Figure 3 It is a planed schematic diagram of a valve body of an electric-controlled lifting valve for a tractor according to the present invention;

[0021] Figure 4 It is a structural schematic diagram of a valve core of an electronically controlled lifting valve for a tractor according to the present invention;

[0022] Figure 5 This is a schematic diagram of the working connection principle of an electronically controlled lifting valve for a tractor according to the present invention;

[0023] In the figure: 1. valve body; 2. inlet; 3. outlet; 4. electromagnet 1; 5. valve core; 6. piston; 7. spring 1; 8. sleeve; 9. rubber ring; 10. connecting pipe; 11. sealing ring; 12. plug ring; 13. socket; 14. middle hole; 15. side hole; 16. electromagnet 2; 17. bayonet; 18. bayonet pin; 19. spring 2; 20. hydraulic cylinder; 21. hydraulic pipe. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0025] See also Figures 1 to 5 The present invention provides a technical solution: a tractor electric control lifting valve, comprising an electric control component and a lifting component, the electric control component comprising a valve body 1 and a valve core 5, the lifting component comprising a hydraulic cylinder 20 and a hydraulic pipe 21, an inlet and outlet component is installed on the valve body 1, the inlet and outlet component comprises an inlet 2 and an outlet 3, a switch component is installed on the valve body 1, the switch component comprises an electromagnet 4 and a piston 6, the inlet 2 and the outlet 3 are both installed with a sealing component, the sealing component comprises a sleeve 8 and a rubber ring 9, a pressure relief component is installed on the valve core 5, the pressure relief component comprises a middle hole 14 and a side hole 15, a locking component is installed on the valve body 1, the locking component comprises an electromagnet 2 16 and a bayonet 18, the electromagnet 4 is welded on the inner wall of the top of the valve body 1, the piston 6 is connected to the electromagnet 4 through a spring 7, and the middle hole 14 is respectively opened at the center of the valve core 5 and the piston 6 , the top of the valve body 1 is connected with the bottom of the valve body 1 through the middle hole 14, and the side holes 15 are opened around the piston 6. The top of the piston 6 is connected with the bottom of the piston 6 through the side holes 15. In use, when the electric control lifting valve needs to be opened, the electromagnet 4 is energized to generate magnetic force, which attracts the piston 6 upward, and the piston 6 drives the valve core 5 to move upward, so that the inlet 2 and the outlet 3 are connected to each other through the valve body 1, so that the hydraulic oil can flow smoothly. After closing, the spring 7 pushes the piston 6 downward, and the piston 6 drives the valve core 5 to move downward, and the inlet 2 and the outlet 3 are isolated by the valve core 5. The top and bottom of the valve core 5 maintain hydraulic balance through the middle hole 14, and the top and bottom of the piston 6 maintain hydraulic balance through the side holes 15, so that the movement of the piston 6 and the valve core 4 will not be disturbed by the oil pressure of the hydraulic oil, thereby effectively ensuring that the electric control lifting valve can perform stable opening and closing operations under high pressure.

[0026] In this embodiment, the inlet 2 is welded to the bottom of the valve body 1, the outlet 3 is welded to one side of the valve body 1, the inlet 2 and the outlet 3 are both connected to the inner side of the valve body 1, the piston 6 is integrally formed at the top of the valve core 5, the outer diameter of the valve core 5 is equal to the inner diameter of the top of the valve body 1, the outer diameter of the piston 6 is equal to the inner diameter of the top of the valve body 1, the sleeve 8 is respectively welded to the bottom and one side of the valve body 1, the sleeve 8 is respectively sleeved on the outside of the inlet 2 and the outlet 3, an annular groove is provided on the inside of the sleeve 8, the rubber ring 9 is bonded to the inside of the annular groove, the inlet 2, the outlet 3 and the sleeve 8 are all provided with connecting pipes 10, the rubber ring 9 is respectively connected to the inlet 2 or the outlet 3 through the connecting pipe 10, and the inlet 2 and the outlet 3 are connected. When connected with the hydraulic pipe 21, the hydraulic pipe 21 is arranged on the outer side of the inlet 2 or the outlet 3 through a threaded sleeve, and the sleeve 8 is clamped on the outer side of the hydraulic pipe 21. The hydraulic oil in the hydraulic pipe 21 passes into the inner side of the inlet 2 and the outlet 3, and then the hydraulic oil enters the inner side of the rubber ring 9 through the connecting pipe 10, so that the rubber ring 9 expands under the pressure of the hydraulic pressure and seals the outer side of the hydraulic pipe 21, thereby effectively ensuring the connection firmness and sealing of the inlet 2 and the outlet 3. The valve core 5 is sealed by the sealing ring 11 in the closed state, and the bottom of the valve core 5 is sealed on the outer side of the plug ring 12 through the socket 13, thereby effectively ensuring the sealing effect between the inlet 2 and the outlet 3 and avoiding hydraulic leakage.

[0027] In this embodiment, a sealing ring 11 is installed on the inner wall of the valve body 1, and the sealing ring 11 is sleeved on the outer side of the valve core 5. An insert ring 12 is integrally formed at the bottom of the valve body 1. A socket 13 is provided at the bottom of the valve core 5, and the socket 13 is sleeved on the outer side of the insert ring 12. An inner groove is provided on the inner wall of the other side of the valve body 1, and the electromagnet 16 is welded to the inner side of the inner groove. A bayonet 17 is provided on the other side of the piston 6, and one end of the bayonet pin 18 is clamped on the inner side of the inner groove, and the other end of the bayonet pin 18 passes through the inner groove and extends to the inner side of the bayonet 17. The bayonet pin 18 is connected to the electromagnet 16 through a spring 19. The valve body 1 is respectively installed on both sides of the hydraulic cylinder 20, and the valve body 1 is respectively connected to the top and bottom of the hydraulic cylinder 20 through a hydraulic pipe 21. The inner sides of the parts are connected, and the valve bodies 1 are connected to each other through the hydraulic pipe 21. When the electromagnet 4 is closed, the spring 7 pushes the piston 6 downward, and the piston 6 first pushes the bayonet 18 to the inner side of the inner groove. Then, when the piston 6 drives the valve core 5 to be completely clamped at the bottom of the valve body 1, the bayonet 18 is aligned with the bayonet 17, and the spring 2 19 pushes the bayonet 18 to push the bayonet 18 to the inner side of the bayonet 17, thereby effectively locking the piston 6 and the valve core 5 to prevent the valve core 5 from moving when it is subjected to hydraulic shock and vibration, thereby effectively ensuring the sealing effect of the electric-controlled lifting valve when it is closed. When the electric-controlled lifting valve needs to be opened, the electromagnet 2 16 is opened synchronously, and the electromagnet 2 16 pulls the bayonet 18 out from the inner side of the bayonet 17 through magnetic force, so that the piston 6 and the valve core 5 can move smoothly.

[0028] The tractor's electronically controlled lifting valve provides power to all electrical equipment through an external power supply. When in use, when the electronically controlled lifting valve needs to be opened, the electromagnet 4 is energized to generate magnetic force, which attracts the piston 6 upward, and the piston 6 drives the valve core 5 to move upward, so that the inlet 2 and the outlet 3 are connected to each other through the valve body 1, thereby allowing the hydraulic oil to flow smoothly. After closing, the spring 7 pushes the piston 6 downward, and the piston 6 drives the valve core 5 to move downward, and the inlet 2 and the outlet 3 are isolated by the valve core 5. The top and bottom of the valve core 5 maintain hydraulic balance through the middle hole 14, and the top and bottom of the piston 6 are in a state of being ... The side hole 15 is used to maintain hydraulic balance, so that the movement of the piston 6 and the valve core 4 will not be disturbed by the oil pressure of the hydraulic oil, thereby effectively ensuring that the electronically controlled lifting valve can perform stable opening and closing operations under high pressure. When the inlet 2 and the outlet 3 are connected to the hydraulic pipe 21, the hydraulic pipe 21 is arranged on the outer side of the inlet 2 or the outlet 3 through a threaded sleeve, and the sleeve 8 is clamped on the outer side of the hydraulic pipe 21. The hydraulic oil in the hydraulic pipe 21 passes into the inner side of the inlet 2 and the outlet 3, so that the hydraulic oil enters the inner side of the rubber ring 9 through the connecting pipe 10, and then The rubber ring 9 expands under the pressure of the hydraulic pressure and seals the outer side of the hydraulic pipe 21, thereby effectively ensuring the connection firmness and sealing of the inlet 2 and the outlet 3. The valve core 5 is sealed by the sealing ring 11 in the closed state. At the same time, the bottom of the valve core 5 is sealed on the outer side of the plug ring 12 through the socket 13, thereby effectively ensuring the sealing effect between the inlet 2 and the outlet 3 to avoid hydraulic leakage. When the electromagnet 4 is closed, the spring 7 pushes the piston 6 downward, and the piston 6 first pushes the bayonet 18 to the inner side of the inner groove, and then when the piston 6 After the valve core 5 is completely clamped at the bottom of the valve body 1, the bayonet 18 is aligned with the bayonet port 17, and the spring 2 19 pushes the bayonet 18 to the inner side of the bayonet port 17, thereby effectively locking the piston 6 and the valve core 5 to prevent the valve core 5 from moving when subjected to hydraulic shock and vibration, thereby effectively ensuring the sealing effect of the electric-controlled lifting valve when it is closed. When the electric-controlled lifting valve needs to be opened, the electromagnet 2 16 is opened synchronously, and the electromagnet 2 16 pulls the bayonet 18 out from the inner side of the bayonet port 17 through magnetic force, so that the piston 6 and the valve core 5 can move smoothly.

[0029] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A tractor electric control lifting valve, comprising an electric control component and a lifting component, wherein the electric control component comprises a valve body (1) and a valve core (5), the lifting component comprises a hydraulic cylinder (20) and a hydraulic pipe (21), an inlet and outlet component is mounted on the valve body (1), the inlet and outlet component comprises an inlet (2) and an outlet (3), a switch component is mounted on the valve body (1), the switch component comprises an electromagnet (4) and a piston (6), and is characterized in that: The inlet (2) and the outlet (3) are both provided with sealing assemblies, the sealing assemblies comprising a sleeve (8) and a rubber ring (9); the valve core (5) is provided with a pressure relief assembly, the pressure relief assembly comprising a center hole (14) and a side hole (15); the valve body (1) is provided with a locking assembly, the locking assembly comprising an electromagnet (16) and a bayonet (18).

2. The tractor electronically controlled lifting valve according to claim 1, characterized in that: The inlet (2) is welded to the bottom of the valve body (1), and the outlet (3) is welded to one side of the valve body (1); both the inlet (2) and the outlet (3) are connected to the inner side of the valve body (1).

3. The tractor electronically controlled lifting valve according to claim 2, characterized in that: The piston (6) is integrally formed on the top of the valve core (5), the outer diameter of the valve core (5) is equal to the inner diameter of the top of the valve body (1), and the outer diameter of the piston (6) is equal to the inner diameter of the top of the valve body (1).

4. The tractor electronically controlled lifting valve according to claim 3, characterized in that: The center hole (14) is respectively formed at the center of the valve core (5) and the piston (6); the top of the valve body (1) is connected to the bottom of the valve body (1) through the center hole (14); the side holes (15) are formed around the piston (6); the top of the piston (6) is connected to the bottom of the piston (6) through the side holes (15).

5. The tractor electronically controlled lifting valve according to claim 1, characterized in that: The sealing sleeve (8) is welded to the bottom and one side of the valve body (1), respectively. The sealing sleeve (8) is sleeved on the outside of the inlet (2) and the outlet (3), respectively. An annular groove is provided on the inside of the sealing sleeve (8), and the rubber ring (9) is bonded to the inside of the annular groove.

6. The tractor electronically controlled lifting valve according to claim 5, characterized in that: The inlet (2), the outlet (3) and the inner side of the sealing sleeve (8) are all provided with connecting pipes (10), and the rubber ring (9) is respectively connected with the inlet (2) or the outlet (3) through the connecting pipe (10).

7. The tractor electronically controlled lifting valve according to claim 6, characterized in that: A sealing ring (11) is installed on the inner wall of the valve body (1), and the sealing ring (11) is sleeved on the outer side of the valve core (5). An insert ring (12) is integrally formed at the bottom of the valve body (1), and a socket (13) is provided at the bottom of the valve core (5), and the socket (13) is sleeved on the outer side of the insert ring (12).

8. The tractor electronically controlled lifting valve according to claim 1, characterized in that: An inner groove is provided on the inner wall of the other side of the valve body (1), and the second electromagnet (16) is welded to the inner side of the inner groove. A bayonet (17) is provided on the other side of the piston (6), and one end of the bayonet pin (18) is clamped on the inner side of the inner groove, and the other end of the bayonet pin (18) passes through the inner groove and extends to the inner side of the bayonet (17). The bayonet pin (18) is connected to the second electromagnet (16) via a second spring (19).

9. The tractor electronically controlled lifting valve according to claim 8, characterized in that: The electromagnet (4) is welded to the inner wall of the top of the valve body (1), and the piston (6) is connected to the electromagnet (4) via a spring (7).

10. The tractor electronically controlled lifting valve according to claim 9, characterized in that: The valve bodies (1) are respectively installed on both sides of the hydraulic cylinder (20); the valve bodies (1) are respectively connected to the inner sides of the top and bottom of the hydraulic cylinder (20) through hydraulic pipes (21); and the valve bodies (1) are connected to each other through the hydraulic pipes (21).

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