Novel remotely and locally controlled hydraulic shifting fork type executing mechanism

Abstract

The invention relates to the field of executing mechanisms, in particular to a novel remotely and locally controlled hydraulic shifting fork type executing mechanism which comprises an executing body, a base, an oil inlet pipeline and a pressure reducing assembly, the executing body is connected to the surface of the base, one end of the oil inlet pipeline is connected to the oil inlet end of the executing body, and the other end of the oil inlet pipeline is connected to the surface of the base; the pressure reduction assembly comprises a pressure reducer, an overflow valve and a backflow pipeline, the pressure reducer and the overflow valve are connected to the oil inlet pipeline at intervals, one end of the backflow pipeline is connected to the oil outlet end of the overflow valve, and the other end of the backflow pipeline is connected to the surface of the base. Through the arrangement of the pressure reducer, the overflow valve and the backflow pipeline, overpressure oil does not need to flow back into the oil tank from the oil inlet pipeline to pollute the oil tank and other parts in the system, the operation stability of the hydraulic shifting fork type executing mechanism is guaranteed, and therefore the service life of the hydraulic shifting fork type executing mechanism is prolonged.

Description

Technical Field

[0001] The present application relates to the field of actuators, and in particular to a novel remotely and locally controlled hydraulic scotch yoke actuator. Background Art

[0002] The hydraulic scotch fork actuator is an actuator that uses hydraulic oil as its power source. It is mainly composed of spring cylinder components, hydraulic cylinder components, a housing, an output shaft, a crank, a slider, and a scotch fork. When the hydraulic oil enters the inner cavity of the hydraulic cylinder, it pushes the piston to move linearly. The movement of the piston is transmitted to the scotch fork through the rod, and the scotch fork then drives the output shaft to rotate. At the same time, the spring in the spring cylinder component provides a reset force when needed to ensure the smooth operation of the actuator. During the execution process, the oil pressure of the hydraulic cylinder acts on the piston and generates thrust or pulling force, thereby driving the actuator to complete the predetermined action.

[0003] The hydraulic power system in the hydraulic scotch yoke actuator is mainly used to supply oil to the inner cavity of the hydraulic cylinder. Usually, the hydraulic power system is equipped with a pressure reducing device. When the pressure reducing device detects that the hydraulic power system is over-pressured, it drives the oil back to the oil tank to reduce the system pressure, thereby protecting the system from damage; however, in the process of flowing back to the oil tank, the oil may carry rust attached to the inner wall of the pipe, impurities at the pipe connection and particulate matter in the inner cavity of the valve, causing pollution to the oil tank and other components in the system. The accumulation of pollutants may cause the system performance to decline, thereby shortening the service life of the hydraulic scotch yoke actuator. Summary of the invention

[0004] In order to improve the problem that the returned oil may pollute the oil tank and other components in the system, the present application provides a novel remote and local controlled hydraulic scotch yoke actuator.

[0005] The present application provides a novel remote and local controlled hydraulic scotch yoke actuator, which adopts the following technical solution: A novel remote and locally controlled hydraulic scotch fork actuator comprises an actuator body, a base, an oil inlet pipeline and a pressure reducing assembly, wherein the actuator body is connected to the base surface, one end of the oil inlet pipeline is connected to the oil inlet end of the actuator body, and the other end of the oil inlet pipeline is connected to the base surface, and oil enters the oil inlet end of the actuator body through the oil inlet pipeline, and the pressure reducing assembly comprises a pressure reducer, a relief valve and a return pipeline, the pressure reducer and the relief valve are connected to the oil inlet pipeline at intervals, the relief valve is located on the side of the oil inlet pipeline close to the actuator body, the pressure reducer can limit the flow of oil in the oil inlet pipeline, one end of the return pipeline is connected to the oil outlet end of the relief valve, and the other end of the return pipeline is connected to the base surface, when the pressure reducer detects that the oil in the oil inlet pipeline is over-pressured, the relief valve is activated to drive the over-pressure oil in the oil inlet pipeline to be discharged from the return pipeline.

[0006] By adopting the above technical scheme, when the hydraulic scotch yoke actuator is in operation, the oil enters the oil inlet end of the actuator body through the oil inlet pipe, thereby realizing stable oil supply to the actuator body; the pressure reducer and the relief valve are connected to the oil inlet pipe at intervals, and when the pressure reducer detects that the oil pressure in the oil inlet pipe is overpressured, the relief valve is activated to drive the overpressure oil in the oil inlet pipe to be discharged from the return pipe, so that the overpressure oil does not need to flow back from the oil inlet pipe to the oil tank to pollute the oil tank and other components in the system, thereby ensuring the stability of the operation of the hydraulic scotch yoke actuator and extending the service life of the hydraulic scotch yoke actuator.

[0007] Optionally, the pressure reducing assembly further comprises pressure gauge 1 and pressure gauge 2, wherein pressure gauge 1 and pressure gauge 2 are connected to the oil inlet pipe at intervals, and pressure gauge 1 and pressure gauge 2 are located on both sides of the pressure reducer, and pressure gauge 2 is located on the side of the pressure reducer close to the actuator body, and pressure gauge 1 can detect the oil pressure in the oil inlet pipe before pressure reduction, and pressure gauge 2 can detect the oil pressure in the oil inlet pipe after pressure reduction.

[0008] By adopting the above technical solution, pressure gauge 1 and pressure gauge 2 are located on both sides of the pressure reducer. Pressure gauge 1 is used to detect the oil pressure in the oil inlet pipeline before pressure reduction, and pressure gauge 2 is used to detect the oil pressure in the oil inlet pipeline after pressure reduction. This allows the staff to directly observe the real-time changes of the oil in the oil inlet pipeline, making it difficult for the oil in the oil inlet pipeline to be damaged by overpressure, thereby ensuring the stability of the operation of the hydraulic scotch yoke actuator.

[0009] Optionally, the pressure reducing assembly further includes a speed regulating valve and a pressure gauge three, wherein the speed regulating valve is connected to the oil inlet pipeline and is located on a side of the pressure gauge two close to the actuator body, and the speed regulating valve is capable of adjusting and controlling the oil flow in the oil inlet pipeline, and the pressure gauge three is connected to the oil inlet pipeline and is located on a side of the speed regulating valve close to the actuator body, and the pressure gauge three is capable of detecting the oil pressure in the oil inlet pipeline.

[0010] By adopting the above technical solution, the speed regulating valve is connected to the oil inlet pipeline, and the speed regulating valve is located on the side of the pressure gauge 2 close to the actuator body. The speed regulating valve can accurately adjust and control the oil flow channel in the oil inlet pipeline, so as to achieve accurate control of the oil flow entering the oil inlet end of the actuator body, thereby improving the execution accuracy of the hydraulic scotch fork actuator; at the same time, the pressure gauge 3 is located on the side of the speed regulating valve close to the actuator body. The pressure gauge 3 can detect the oil pressure entering the actuator, so that the staff can timely understand the working status of the hydraulic scotch fork actuator. When the hydraulic pressure is too high or too low, the pressure gauge can quickly reflect the abnormal situation, thereby reminding the staff to take corresponding measures to make adjustments in time.

[0011] Optionally, a control component is also included, which includes a control pipeline, a solenoid valve and a pilot valve, the pilot valve is connected to the oil inlet pipeline, the pilot valve is located between pressure gauge 2 and the speed regulating valve, one end of the control pipeline is connected to the pilot valve signal port, the other end of the control pipeline is connected to the oil inlet pipeline, the control pipeline is located between the pilot valve and the overflow valve, the solenoid valve is connected to the control pipeline, the solenoid valve can control the on and off of the control pipeline, when the solenoid valve is disconnected, the oil in the control pipeline stops supplying oil to the pilot valve signal port, and the pilot valve disconnects and closes the oil inlet pipeline.

[0012] By adopting the above technical scheme, when it is necessary to supply oil to the oil inlet end of the actuator body, the control solenoid valve is energized and opened, and the oil in the oil inlet pipeline enters the pilot valve signal port through the control pipeline. When oil enters the pilot valve signal port and the oil pressure reaches the opening requirement of the pilot valve, the pilot valve is changed to a normally open state and the oil inlet pipeline is opened. The oil in the oil inlet pipeline enters the oil inlet end of the actuator body after the flow rate is adjusted by the speed control valve; when it is necessary to stop supplying oil to the oil inlet end of the actuator body, the control solenoid valve is powered off and closed, and the oil in the control pipeline stops supplying oil to the pilot valve signal port. The pilot valve signal port is free of oil and is changed to a normally closed state and the oil inlet pipeline is closed. The oil in the oil inlet pipeline stops supplying oil to the oil inlet end of the actuator body, thereby realizing remote control of the hydraulic sled actuator.

[0013] Optionally, the control component further comprises a hand valve, which is connected to the control pipeline and is located on a side of the solenoid valve close to the pilot valve, and the hand valve can control the on-off of the control pipeline.

[0014] By adopting the above technical solution, the hand valve is located on the side of the solenoid valve close to the pilot valve, and the hand valve can control the on-off of the control pipeline. When the network or system fails and cannot control the operation of the solenoid valve, the staff only needs to turn the hand valve handle to achieve precise control of the on-off of the oil in the control pipeline, so that the hydraulic scotch fork actuator has both remote control and local control. Local control provides the advantages of instant response, intuitive operation and reduced dependence, while remote control provides the advantages of high flexibility, centralized management, data recording and analysis, etc., which jointly improve the operating efficiency and reliability of the equipment, reduce the maintenance cost and safety risks of the hydraulic scotch fork actuator, increase the use scenarios of the hydraulic scotch fork actuator, and thus improve the versatility of the hydraulic scotch fork actuator.

[0015] Optionally, the oil outlet end of the pilot valve, the oil outlet end of the pressure reducer, the oil outlet end of the manual valve and the oil outlet end of the solenoid valve are all connected to the oil return pipeline.

[0016] By adopting the above technical solution, when the pilot valve, the pressure reducer, the hand valve and the solenoid valve are in the normally off state, the oil in the pilot valve, the oil in the pressure reducer, the oil in the hand valve and the oil in the solenoid valve are all discharged from the return pipe, so that the oil is not easily accumulated in the pilot valve, the pressure reducer, the hand valve and the solenoid valve, thereby reducing the wear of the oil on these components, thereby extending the service life of the hydraulic scotch fork actuator.

[0017] Optionally, the oil inlet pipeline is connected to a filter, and the filter is located on a side of the pressure gauge away from the pressure reducer. The filter can filter impurities in the oil in the oil inlet pipeline.

[0018] By adopting the above technical solution, the filter can filter impurities in the oil in the oil inlet pipeline, so that the oil is not easy to carry impurities into other components to cause wear, thereby extending the service life of the hydraulic scotch yoke actuator.

[0019] The cover body is provided with an oil outlet, and the surface of the cover body is provided with an oil outlet, and the oil outlet is provided with an oil outlet.

[0020] By adopting the above technical scheme, when the filter is installed, the filter element is embedded in the installation cavity, the cover body is embedded in the sealing cavity, the outer peripheral surface of the cover body is pressed against the inner wall of the sealing cavity and closes the installation cavity, and at the same time, the fixing hole corresponds to the fixing groove one by one and is connected, the end of the fixing rod slides along the inner wall of the fixing hole toward the fixing groove, the end of the fixing rod is embedded in the fixing groove, and the outer wall of the fixing rod is pressed against the inner wall of the fixing groove to form a limit, so that the cover body is not easy to separate from the shell, thereby realizing the assembly of the filter; at the same time, the oil in the oil tank enters the installation cavity from the oil inlet through the oil inlet pipe, and the filter element enters the oil inlet pipe from the oil outlet after filtering the oil, thereby realizing the filtration of the oil in the oil inlet pipe, so that the oil is not easy to carry impurities to interfere with the operation of other components, thereby extending the service life of the hydraulic scotch fork actuator.

[0021] Optionally, the fixing assembly further includes a fixing ring and a plurality of elastic members, the outer peripheral surface of the shell is coaxially provided with a fixing cavity for sliding of the fixing ring, the fixing cavity is connected to a plurality of fixing holes, the elastic member corresponds to the fixing rod one by one, one end of the elastic member in the elastic force direction is connected to the rod surface of the fixing rod, and the other end of the elastic member in the elastic force direction is connected to the inner wall of the fixing hole, the elastic member has the elastic force to drive the fixing rod to slide in the direction close to the fixing cavity, and the end of the fixing rod protrudes from the inner wall of the fixing cavity, and a guide surface is provided at the end of the fixing rod protruding from the fixing cavity, and the guide surface is in the shape of a circular arc protrusion, and the guide surface can abut against the inner wall of the fixing ring and guide the fixing rod to slide in the direction close to the fixing groove.

[0022] By adopting the above technical solution, when the cover body is embedded in the sealing cavity and the fixing hole corresponds to the fixing groove one by one, the fixing ring slides along the inner wall of the fixing cavity toward the direction close to the guide surface, the guide surface abuts the inner ring wall of the fixing ring and guides the fixing rod to slide toward the direction close to the fixing groove, the end of the fixing rod is embedded in the fixing groove, the outer wall of the fixing rod abuts against the inner wall of the fixing groove to form a limit, and the inner wall of the fixing groove and the inner ring wall of the fixing ring abut against both sides of the fixing rod to form a limit, so that the fixing rod is not easy to deviate in the fixing hole, thereby improving the connection stability between the cover body and the shell.

[0023] Optionally, the fixing assembly further includes connecting rod 1, connecting rod 2, a rotating rod, a fixing block, elastic member 2, a connecting rope and a limit block, wherein one end of the connecting rod 1 is rotatably connected to the inner wall of the fixing cavity away from the fixing hole, the other end of the connecting rod 1 is rotatably connected to the surface of the fixing block, one end of the connecting rod 2 is rotatably connected to the surface of the fixing block, the other end of the connecting rod 2 is rotatably connected to the surface of the fixing ring, the surface of the fixing block is provided with a limit cavity for the limit block to slide, the sliding direction of the limit block and the sliding direction of the fixing ring are perpendicular to each other, the inner wall of the fixing cavity is provided with a limit groove for the end of the limit block to be embedded, when the connecting rod 1 and the connecting rod 2 rotate in a direction away from each other, and the connecting rod 1 When the rod surface is flush with the rod surface of the second connecting rod, the inner ring wall of the fixing ring is pressed against the guide surface, and the limit groove is connected to the limit cavity; one end of the second elastic force direction of the elastic member is connected to the surface of the limit block, and the other end of the second elastic force direction of the elastic member is connected to the inner wall of the limit cavity. The second elastic member has the elastic force to drive the limit block to slide in the direction close to the limit groove, and the end of the limit block has the tendency to embed into the limit groove. The rotating rod is rotatably connected to the inner wall of the limit cavity, and the axis of the rotating rod is perpendicular to the axis of the shell body. One end of the connecting rope is connected to the surface of the limit block, and the other end of the connecting rope is wrapped around the outer wall of the rotating rod, and the connecting rope between the rotating rod and the limit block is in a taut state.

[0024] By adopting the above technical scheme, when the cover body is embedded in the sealing cavity and the fixing hole and the fixing groove correspond to each other and are connected, the rotating rod is rotated to drive the connecting rope to wrap around the outer wall of the rotating rod, the connecting rope pulls the limit block and drives the limit block to overcome the elastic force of the second elastic member and slide in the direction close to the limit cavity, the end face of the limit block is flush with the end face of the fixed block, the fixed block is pressed, and the connecting rod one and the connecting rod two are driven to rotate in the direction away from each other, the end face of the connecting rod one and the end face of the connecting rod two are flush, and the limiting groove is connected to the limiting cavity, the rotating rod is released, and the elastic force of the second elastic member drives the limit block to slide in the direction close to the fixing groove, the end of the limit block is embedded in the fixing groove, the outer wall of the limit block abuts the inner wall of the fixing groove to form a limit, and at the same time the fixing ring slides along the inner wall of the fixing cavity toward the fixing hole, the guide surface abuts the inner ring wall of the fixing ring and guides the fixing rod to slide along the inner wall of the fixing hole toward the fixing groove, the end of the fixing rod is embedded in the fixing groove, and the fixing The outer wall of the fixed rod abuts the inner wall of the fixing groove to form a limit, so that the cover body is fixed on the shell, and no tools are required for installation, thereby improving the installation efficiency of the filter; when the filter element needs to be replaced, the rotating rod is driven to rotate, driving the connecting rope to wrap around the outer peripheral surface of the rotating rod, and the connecting rope drives the limit block to overcome the elastic force of the second elastic member and slide in the direction close to the limit cavity, and the end face of the limit block is flush with the surface of the fixing block, and the limiting effect of the fixing block on the inner wall of the fixing cavity disappears, driving the fixing block away from the fixing cavity, driving the connecting rod one and the connecting rod two to rotate in the direction of approaching each other, pushing the fixing ring along the inner wall of the fixing cavity away from the fixing hole, and the tightening effect of the inner ring wall of the fixing ring on the rod surface of the fixing rod disappears, and the elastic force of the first elastic member drives the fixing rod to slide along the inner wall of the fixing hole in the direction away from the fixing groove, and the end of the fixing rod is separated from the fixing groove, so that the cover body and the shell can be quickly disassembled and installed, thereby improving the ease of use of the filter.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The setting of pressure gauge 1 and pressure gauge 2 enables the staff to directly observe the real-time changes of the oil in the oil inlet pipeline, so that the oil in the oil inlet pipeline is not easily damaged by overpressure, thereby ensuring the stability of the operation of the hydraulic scotch yoke actuator; 2. The setting of pressure gauge 1 and pressure gauge 2 enables the staff to directly observe the real-time changes of the oil in the oil inlet pipeline, so that the oil in the oil inlet pipeline is not easily damaged by overpressure, thereby ensuring the stability of the operation of the hydraulic scotch yoke actuator; 3. The setting of the speed control valve and the pressure gauge enables the staff to timely understand the working status of the hydraulic scotch yoke actuator. When the hydraulic pressure is too high or too low, the pressure gauge can quickly reflect the abnormal situation, thereby reminding the staff to take corresponding measures to make adjustments in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is the hydraulic principle diagram in Example 1 of the present application.

[0027] Figure 2 It is a schematic diagram of the overall structure of the present application in 1.

[0028] Figure 3 It is a schematic diagram of the overall structure in Example 1 of the present application, mainly showing the pressure reducing assembly.

[0029] Figure 4 It is a cross-sectional view of the execution body in Example 1 of the present application.

[0030] Figure 5 It is a cross-sectional view of the filter in Example 2 of the present application.

[0031] Figure 6 It is a schematic diagram of the partial structure of the fixing component in Example 2 of the present application.

[0032] Figure 7 yes Figure 5 Enlarged view of point A in the middle.

[0033] Figure 8 It is a partial cross-sectional view of the shell in Example 2 of the present application, mainly showing the limiting groove.

[0034] Description of the accompanying drawings: 1. actuator; 11. push-pull hole; 2. base; 3. oil inlet pipeline; 4. pressure reducing assembly; 41. pressure reducer; 42. overflow valve; 43. return pipeline; 44. pressure gauge 1; 45. pressure gauge 2; 46. pressure gauge 3; 47. speed regulating valve; 5. control assembly; 51. control pipeline; 52. solenoid valve; 53. pilot valve; 54. hand valve; 6. stop valve; 7. filter; 71. filter element; 72. housing; 721. sealing chamber; 722. installation chamber; 723. oil inlet; 724. fixing chamber; 725. fixing hole; 726. positioning groove; 727. limit groove; 73. cover body; 731 , oil outlet; 732, fixing groove; 74, fixing assembly; 741, fixing ring; 742, connecting rod one; 743, connecting rod two; 744, rotating rod; 745, fixing block; 7451, limiting cavity; 746, elastic part two; 747, connecting rope; 748, limiting block; 749, fixing rod; 7491, guide surface; 7410, elastic part one; 8, manual assembly; 81, spring cylinder; 811, push-pull cavity; 812, sliding hole; 82, reset spring; 83, push-pull rod; 84, handwheel; 85, nut; 86, screw; 9, positioning block; 10, sealing assembly; 101, sealing ring capsule; 102, oil suction expansion ring. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-8 This application is described in further detail.

[0036] The embodiment of the present application discloses a novel remotely and locally controlled hydraulic scotch yoke actuator.

[0037] Example 1 Reference Figure 1 and Figure 2 A novel remote and local controlled hydraulic scotch fork actuator comprises an actuator body 1, a base 2, an oil inlet pipeline 3, a pressure reducing assembly 4 and a control assembly 5. The bottom of the base 2 abuts against the ground to form a support. The actuator body 1 is fixed to the surface of the base 2 by bolts. One end of the oil inlet pipeline 3 is connected to the oil inlet end of the actuator body 1, and the other end of the oil inlet pipeline 3 is connected to the surface of the base 2 and installed in the oil tank. The oil in the oil tank enters the oil inlet end of the actuator body 1 through the oil inlet pipeline 3. The pressure reducing assembly 4 and the control assembly 5 are both installed on the oil inlet pipeline 3 at intervals. The control assembly 5 can control the on and off of the oil inlet pipeline 3. The pressure reducing assembly 4 can control the size of the oil pressure in the oil inlet pipeline 3 and drive the overpressure oil to be discharged, so that the overpressure oil does not need to flow back from the oil inlet pipeline 3 to the oil tank to pollute the oil tank and other components in the system, thereby ensuring the stability of the operation of the hydraulic scotch fork actuator, thereby extending the service life of the hydraulic scotch fork actuator.

[0038] Reference Figure 2 and Figure 3 A stop valve 6 is installed on the surface of the oil inlet pipeline 3 close to the oil tank. The stop valve 6 can manually control the on and off of the oil inlet pipeline 3. A filter 7 is installed on the oil inlet pipeline 3. The filter 7 is located on the side of the stop valve 6 close to the actuator body 1. The filter 7 can filter impurities in the oil in the oil inlet pipeline 3, so that the oil in the oil inlet pipeline 3 is not easy to carry impurities to interfere with the stability of the operation of the pressure reducing component 4 and the control component 5, thereby extending the service life of the hydraulic scotch fork actuator.

[0039] Reference Figure 2 and Figure 3 The pressure reducing assembly 4 comprises a pressure reducer 41, a relief valve 42, a return pipe 43, a pressure gauge 1 44, a pressure gauge 2 45, a pressure gauge 3 46 and a speed regulating valve 47. The pressure reducer 41 and the relief valve 42 are installed at intervals on the oil inlet pipe 3. The pressure reducer 41 is located between the actuator body 1 and the filter 7. The pressure reducer 41 can limit the flow rate of the oil in the oil inlet pipe 3. The relief valve 42 is located on the side of the oil inlet pipe 3 away from the filter 7. One end of the return pipe 43 is connected to the oil outlet end of the relief valve 42, and the other end of the return pipe 43 is connected to the surface of the base 2. The relief valve 42 can drive the overpressure oil in the oil inlet pipe 3 to be discharged from the return pipe 43, so that the overpressure oil does not need to flow back from the oil inlet pipe 3 to the oil tank to pollute the oil tank and other components in the system, thereby ensuring the stability of the operation of the hydraulic scotch fork actuator, thereby extending the service life of the hydraulic scotch fork actuator.

[0040] Reference Figure 2 and Figure 3The speed regulating valve 47 is installed on the oil inlet pipeline 3. The speed regulating valve 47 is located on the side of the actuator close to the pressure reducer 41. The speed regulating valve 47 can adjust and control the oil flow in the oil inlet pipeline 3, so as to realize the precise control of the oil flow at the oil inlet end of the actuator body 1. The oil in the oil tank enters the oil inlet pipeline 3 and passes through the stop valve 6, the filter 7 and the pressure reducer 41 in sequence and enters the oil inlet end of the actuator body 1 from the speed regulating valve 47, so as to realize the stable supply to the oil inlet end of the actuator body 1. When the pressure reducer 41 detects that the oil in the oil inlet pipeline 3 is overpressured, the relief valve 42 is started and drives the overpressure oil in the oil inlet pipeline 3 to be discharged from the return pipeline 43, so that the overpressure oil does not need to flow back from the oil inlet pipeline 3 to the oil tank to pollute the oil tank and other components in the system, thereby ensuring the stability of the operation of the hydraulic scotch fork actuator, thereby extending the service life of the hydraulic scotch fork actuator.

[0041] Reference Figure 2 and Figure 3 , pressure gauge 1 44, pressure gauge 2 45 and pressure gauge 3 46 are connected to the oil inlet pipeline 3 at intervals, pressure gauge 1 44 is located between the filter 7 and the pressure reducer 41, pressure gauge 1 44 can detect the oil pressure in the oil inlet pipeline 3 before pressure reduction in real time, pressure gauge 2 45 is located between the speed regulating valve 47 and the pressure reducer 41, pressure gauge 2 45 can detect the oil pressure in the oil inlet pipeline 3 after pressure reduction in real time, pressure gauge 3 46 is located between the actuator body 1 and the speed regulating valve 47, pressure gauge 3 46 can detect the amount of oil entering the oil inlet end of the actuator body 1 in real time, so that the staff can timely understand the working status of the hydraulic fork actuator, when the hydraulic pressure is too high or too low, the pressure gauge can quickly reflect the abnormal situation, thereby reminding the staff to take corresponding measures to make adjustments in time.

[0042] Reference Figure 2 and Figure 3 The control component 5 includes a control pipeline 51, a solenoid valve 52, a pilot valve 53 and a hand valve 54. The pilot valve 53 is installed on the oil inlet pipeline 3. The pilot valve 53 is located between the pressure gauge 45 and the speed regulating valve 47. One end of the control pipeline 51 is installed on the inner wall of the signal port of the pilot valve 53. The other end of the control pipeline 51 is connected to the oil inlet pipeline 3. The control pipeline 51 is located between the relief valve 42 and the pilot valve 53. The solenoid valve 52 and the hand valve 54 are connected to the control pipeline 51 at intervals. The hand valve 54 is located between the pilot valve 53 and the solenoid valve 52. The hand valve 54 and the solenoid valve 52 can both control the on and off of the control pipeline 51.

[0043] Reference Figure 2 and Figure 3When the hydraulic scotch yoke actuator needs to be remotely controlled, the solenoid valve 52 is powered on and opened, and the oil in the oil inlet pipeline 3 enters the signal port of the pilot valve 53 through the control pipeline 51. The oil pressure in the signal port of the pilot valve 53 reaches the opening requirement of the pilot valve 53, and the pilot valve 53 is changed to a normally open state. The oil in the oil inlet pipeline 3 enters the oil inlet end of the actuator body 1 from the speed regulating valve 47 through the pilot valve 53.

[0044] Reference Figure 2 and Figure 3 When it is necessary to control the hydraulic scotch fork actuator locally, the staff turns the handle on the hand valve 54 and closes the hand valve 54 to close the control pipe 51, and the oil in the oil inlet pipe 3 stops entering the signal port of the pilot valve 53 through the control pipe 51. There is no oil pressure at the signal port of the pilot valve 53, and the pilot valve 53 is changed to a normally closed state. The oil in the oil inlet pipe 3 stops entering the oil inlet end of the actuator body 1 from the speed regulating valve 47, so that the hydraulic scotch fork actuator has both remote control and local control, which jointly improves the operating efficiency and reliability of the equipment, reduces the maintenance cost and safety risk of the hydraulic scotch fork actuator, increases the use scenarios of the hydraulic scotch fork actuator, and thus improves the versatility of the hydraulic scotch fork actuator.

[0045] Reference Figure 2 and Figure 3 The oil inlet end of the pilot valve 53, the oil outlet end of the pressure reducer 41, the oil outlet end of the hand valve 54 and the oil outlet end of the solenoid valve 52 are all connected to the oil return pipeline. When the pilot valve 53, the pressure reducer 41, the hand valve 54 and the solenoid valve 52 are closed, the oil in the pilot valve 53, the pressure reducer 41, the hand valve 54 and the solenoid valve 52 can be discharged from the return pipeline 43, so that the oil is not easily accumulated in these components, reducing the wear of the oil on these components, thereby extending the service life of the hydraulic scotch fork actuator.

[0046] Reference Figure 2 and Figure 3The actuator body 1 is equipped with a manual assembly 8, which can manually control the operation of the fork-type actuator. The manual assembly 8 includes a spring cylinder 81, a reset spring 82, a push-pull rod 83, a hand wheel 84, a nut 85 and a screw rod 86. The spring cylinder 81 is fixed to the surface of the actuator body 1 by bolts. The surface of the spring cylinder 81 facing the actuator body 1 is provided with a push-pull cavity 811 for the push-pull rod 83 to slide. The push-pull cavity 811 is connected to the inner cavity of the spring cylinder 81. The surface of the actuator body 1 facing the push-pull cavity 811 is provided with a push-pull cavity 811 for the push-pull rod 83 to slide. The push-pull hole 11 through which the pull rod 83 slides is connected to the inner cavity of the actuator body 1. One end of the push-pull rod 83 faces the fork on the actuator body 1, and the other end of the push-pull rod 83 is located in the inner cavity of the spring cylinder 81. One end of the return spring 82 in the direction of the elastic force is connected to the rod surface of the push-pull rod 83, and the other end of the return spring 82 in the direction of the elastic force is connected to the inner cavity wall of the spring cylinder 81. The return spring 82 has an elastic force that drives the push-pull rod 83 to slide in the direction away from the actuator body 1, and the rod surface of the push-pull rod 83 tends to move away from the fork on the actuator body 1.

[0047] Reference Figure 3 and Figure 4 The surface of the spring cylinder 81 away from the execution body 1 is provided with a sliding hole 812 for the screw rod 86 to slide. The sliding direction of the screw rod 86 and the sliding direction of the push-pull rod 83 are parallel to each other. The sliding hole 812 is connected to the inner cavity of the spring cylinder 81, and the push-pull rod 83 is located between the shift fork and the screw rod 86 on the execution body 1. The nut 85 is coaxially connected to the inner wall of the sliding hole 812. The inner wall of the nut 85 engages the outer peripheral surface of the screw rod 86. The axis of the nut 85 coincides with the axis of the screw rod 86, and the rotating shaft of the handwheel 84 is coaxially fixed to the outer peripheral surface of the nut 85. When it is necessary to drive the output shaft on the execution body 1 to rotate, the handwheel 84 is driven to rotate, and the handwheel 84 drives As the nut 85 rotates, the inner wall of the nut 85 engages with the outer surface of the screw rod 86 and drives the screw rod 86 to slide along the inner wall of the sliding hole 812 toward the push-pull rod 83. The surface of the screw rod 86 abuts against the surface of the push-pull rod 83 and drives the push-pull rod 83 to overcome the elastic force of the return spring 82 and slide along the inner wall of the push-pull cavity 811 toward the direction of the shift fork close to the actuator body 1. The screw rod 86 drives the output shaft on the actuator body 1 to rotate through the shift fork on the actuator body 1, thereby realizing manual control of the hydraulic shift fork actuator without the need for oil pressure drive, further increasing the use scenarios of the hydraulic shift fork actuator, thereby improving the versatility of the hydraulic shift fork actuator.

[0048] The implementation principle of a novel remote and locally controlled hydraulic scotch fork actuator of Example 1 of the present application is as follows: when the hydraulic scotch fork actuator is in operation, the stop valve is opened, and the oil in the oil tank enters the filter 7 through the stop valve 6 and is filtered before entering the pressure reducer 41. The pressure reducer 41 detects the oil pressure in the oil inlet pipe 3 in real time. When the pressure reducer 41 detects that the oil in the oil inlet pipe 3 is over-pressured, the relief valve 42 is activated and drives the over-pressure oil in the oil inlet pipe 3 to be discharged from the return pipe 43, so that the over-pressure oil does not need to flow back from the oil inlet pipe 3 to the oil tank to pollute the oil tank and other components in the system, thereby ensuring the hydraulic scotch fork actuator. The stability of the structure operation is improved, thereby extending the service life of the hydraulic scotch fork actuator; the oil after being reduced in pressure by the pressure reducer 41 enters the pilot valve 53, and the solenoid valve 52 is energized to open, and the oil in the oil inlet pipeline 3 enters the signal port of the pilot valve 53 through the control pipeline 51. The oil pressure in the signal port of the pilot valve 53 reaches the opening requirement of the pilot valve 53, and the pilot valve 53 is changed to a normally open state. The oil in the oil inlet pipeline 3 enters the speed regulating valve 47 through the pilot valve 53 for pressure regulation and then enters the oil inlet end of the actuator body 1, thereby realizing accurate control of the oil pressure in the actuator body 1, thereby improving the execution accuracy of the hydraulic scotch fork actuator.

[0049] Example 2 Reference Figure 5 and Figure 6 , the difference between embodiment 2 and embodiment 1 is that the filter 7 includes a filter element 71, a shell 72, a cover 73 and a fixing assembly 74, the shell 72 is fixed to the surface of the base 2 by bolts, the shell 72 has an installation cavity 722 for embedding the filter element 71, the inner wall of the installation cavity 722 is coaxially provided with a sealing cavity 721 for embedding the cover 73, the outer peripheral surface of the cover 73 can be pressed against the inner wall of the sealing cavity 721 to form a seal, and the end surface of the shell 72 in the axial direction away from the cover 73 is provided with a sealing cavity for installing the oil inlet pipeline 3 An oil inlet 723 is connected to the installation cavity 722. An oil outlet 731 for installing the oil inlet pipe 3 is provided on the surface of the cover body 73. The oil outlet 731 is connected to the installation cavity 722. The oil in the oil tank enters the installation cavity 722 from the oil inlet 723 through the oil inlet pipe 3. The filter element 71 in the installation cavity 722 filters the oil and then enters the oil inlet pipe 3 from the oil outlet 731, so that the oil is not easy to carry impurities and interfere with the operation of other components, thereby extending the service life of the hydraulic scotch fork actuator.

[0050] Reference Figure 6 and Figure 7The fixing assembly 74 is installed on the shell 72, and the fixing assembly 74 can limit the cover body 73 in the sealed cavity 721; the fixing assembly 74 includes a fixing ring 741, a connecting rod 1 742, a connecting rod 2 743, a rotating rod 744, a fixing block 745, an elastic member 2 746, a connecting rope 747, a limiting block 748, a plurality of fixing rods 749 and a plurality of elastic members 1 7410. The outer peripheral surface of the shell 72 is coaxially provided with a fixing cavity 724 for the sliding movement of the fixing ring 741, and the inner wall of the fixing cavity 724 is spaced apart with a plurality of fixing holes 725 for the sliding movement of the fixing rods 749. The sliding direction of the fixing rods 749 and the fixing ring 741 are The sliding directions are perpendicular to each other, and a plurality of fixing holes 725 are evenly spaced around the axis of the shell 72, and the fixing holes 725 are connected to the sealing cavity 721. A plurality of fixing grooves 732 for the ends of the fixing rods 749 to be embedded in are provided at intervals on the outer peripheral surface of the cover body 73. A positioning block 9 is fixed to the end surface of the cover body 73 facing the sealing cavity 721, and a positioning groove 726 for the positioning block 9 to be embedded in is provided on the inner wall of the sealing cavity 721. When the positioning block 9 is embedded in the positioning groove 726, the fixing holes 725 correspond to the fixing grooves 732 one by one and are connected, so that the user does not need to repeatedly rotate the angle of the cover body 73 in the sealing cavity 721, thereby improving the installation efficiency of the filter 7.

[0051] Reference Figure 6 and Figure 7 The elastic member 7410 may be a compression spring or a tension spring. In the embodiment of the present application, the elastic member 7410 is a compression spring with a certain deformation capability. One end of the elastic member 7410 in the elastic direction is connected to the inner wall of the fixing hole 725, and the other end of the elastic member 7410 in the elastic direction is connected to the rod surface of the fixing rod 749. The elastic member 7410 has an elastic force to drive the fixing rod 749 to slide in the direction close to the fixing cavity 724. One end of the fixing rod 749 protrudes from the inner wall of the fixing cavity 724, and the other end of the fixing rod 749 tends to be flush with the inner wall of the sealing cavity 721. The end of the fixing rod 749 protruding from the fixing cavity 724 is provided with a guide surface 7491, and the guide surface 7491 is circular. The fixing ring 741 is in the shape of an arc bulge. When the fixing ring 741 slides along the inner wall of the fixing cavity 724 toward the direction close to the guide surface 7491, the guide surface 7491 abuts against the inner wall of the fixing ring 741 and guides the fixing rod 749 to slide along the inner wall of the fixing hole 725 toward the direction close to the fixing groove 732. The end of the fixing rod 749 is embedded in the fixing groove 732, and the outer wall of the fixing rod 749 abuts against the inner wall of the fixing groove 732 to form a limit. The inner wall of the fixing ring 741 and the inner wall of the fixing groove 732 clamp the two ends of the fixing rod 749, so that the fixing rod 749 is not easily offset on the inner wall of the fixing hole 725, thereby ensuring that the cover body 73 is not easily separated from the shell body 72, thereby improving the limit stability of the cover body 73 on the shell body 72.

[0052] Reference Figure 7 and Figure 8One end of the connecting rod 742 is rotatably connected to the inner wall of the fixing cavity 724 away from the fixing hole 725, and the other end of the connecting rod 742 is rotatably connected to the surface of the fixing block 745. One end of the connecting rod 743 is rotatably connected to the surface of the fixing block 745, and the other end of the connecting rod 743 is rotatably connected to the surface of the fixing ring 741. When the fixing block 745 is driven to approach the fixing cavity 724, the connecting rod 1 742 and the connecting rod 2 743 are driven to rotate in the direction away from each other, and the fixing ring 741 is pushed to slide along the inner wall of the fixing cavity 724 toward the direction close to the guide surface 7491; A limiting cavity 7451 is provided on the surface of block 745 for the limiting block 748 to slide, and the sliding direction of the limiting block 748 and the sliding direction of the fixing ring 741 are perpendicular to each other. A limiting groove 727 is provided on the inner wall of the fixing cavity 724 for the end of the limiting block 748 to be embedded. When the connecting rod 1 742 and the connecting rod 2 743 rotate in the directions away from each other and the rod surface of the connecting rod 1 742 is flush with the rod surface of the connecting rod 2 743, the inner ring wall of the fixing ring 741 and the inner wall of the fixing groove 732 clamp the two ends of the fixing rod 749 to form a limit, and the limiting groove 727 is connected to the limiting cavity 7451.

[0053] Reference Figure 7 and Figure 8The second elastic member 746 can be a compression spring or a tension spring. In the embodiment of the present application, the second elastic member 746 is a compression spring with a certain deformation ability. One end of the second elastic member 746 in the elastic direction is connected to the inner wall of the limiting cavity 7451, and the other end of the second elastic member 746 in the elastic direction is connected to the surface of the limiting block 748. The second elastic member 746 has an elastic force to drive the limiting block 748 to slide in the direction away from the limiting cavity 7451, and the end of the limiting block 748 has a tendency to protrude from the surface of the fixed block 745; the end of the rotating rod 744 is rotatably connected to the fixed block The rotation axis of the rotating rod 744 and the sliding direction of the limit block 748 are perpendicular to each other. One end of the connecting rope 747 is fixed to the surface of the limit block 748, and the other end of the connecting rope 747 is wound around the outer peripheral surface of the rotating rod 744. When the cover body 73 is fixed, the rotating rod 744 is driven to rotate, driving the connecting rope 747 to be wound around the outer peripheral surface of the rotating rod 744, pushing the limit block 748 to overcome the elastic force of the second elastic member 746 and slide towards the direction close to the limit cavity 7451. The end face of the limit block 748 is flush with the end face of the fixed block 745, and the fixed block 745 is pressed. The fixed block 745 drives the connecting rod 1 742 and the connecting rod 2 743 to rotate in the direction away from each other, and the end surface of the connecting rod 1 742 is flush with the end surface of the connecting rod 2 743. The inner ring wall of the fixing ring 741 and the inner wall of the fixing groove 732 are pressed against the two ends of the fixing rod 749 to form a limit, and the limit groove 727 is connected to the limit cavity 7451. The rotating rod 744 is loosened, and the elastic force of the elastic member 2 746 drives the limit block 748 to slide in the direction close to the fixing groove 732. The end of the limit block 748 is embedded in the fixing groove 732, and the outer wall of the limit block 748 abuts against the fixing groove 732. The inner wall of the fixing cavity 724 forms a limit, and at the same time, the fixing ring 741 slides along the inner wall of the fixing cavity 724 toward the direction close to the fixing hole 725, and the guide surface 7491 abuts against the inner wall of the fixing ring 741 and guides the fixing rod 749 to slide along the inner wall of the fixing hole 725 toward the direction close to the fixing groove 732, and the end of the fixing rod 749 is embedded in the fixing groove 732, and the outer wall of the fixing rod 749 abuts against the inner wall of the fixing groove 732 to form a limit, so that the cover body 73 is fixed on the housing 72, and no tools are required for installation, thereby improving the installation efficiency of the filter 7;When the filter element 71 needs to be replaced, the rotating rod 744 is driven to rotate, driving the connecting rope 747 to be wound around the outer peripheral surface of the rotating rod 744. The connecting rope 747 drives the limiting block 748 to overcome the elastic force of the elastic member 2 746 and slide toward the direction close to the limiting cavity 7451. The end face of the limiting block 748 is flush with the surface of the fixed block 745. The limiting effect of the fixed block 745 on the inner wall of the fixed cavity 724 disappears, driving the fixed block 745 away from the fixed cavity 724, driving the connecting rod 1 742 and the connecting rod 2 743 rotates in the direction of approaching each other, pushing the fixing ring 741 away from the fixing hole 725 along the inner wall of the fixing cavity 724, the tightening effect of the inner wall of the fixing ring 741 on the rod surface of the fixing rod 749 disappears, and the elastic force of the elastic member 1 7410 drives the fixing rod 749 to slide along the inner wall of the fixing hole 725 in the direction away from the fixing groove 732, and the end of the fixing rod 749 is separated from the fixing groove 732, realizing the quick disassembly and quick assembly between the cover body 73 and the shell body 72, thereby improving the convenience of using the filter 7. ;

[0054] Reference Figure 7 and Figure 8 A sealing assembly 10 is connected between the shell body 72 and the cover body 73. The sealing assembly 10 includes a sealing ring capsule 101 and an oil absorption expansion ring 102. The material of the sealing ring capsule 101 can be rubber or silicone. In the embodiment of the present application, the material of the sealing ring capsule 101 is rubber, which has a certain deformation ability. The sealing ring capsule 101 is coaxially connected to the inner wall of the sealing cavity 721. In the embodiment of the present application, the material of the oil absorption expansion ring 102 is oil absorption expansion rubber. The oil absorption expansion ring 102 is fixed on the surface of the cover body 73 facing the sealing ring capsule 101. When the cover body 73 is embedded in the sealing cavity 721, the oil absorption expansion ring 102 squeezes the sealing ring capsule 101 to deform and form a seal. When the oil in the installation cavity 722 penetrates into the sealing cavity 721, the oil absorption expansion ring 102 absorbs oil and expands and squeezes the sealing ring capsule 101. The sealing ring capsule 101 is deformed under pressure and pressed tightly, so that the oil in the installation cavity 722 is not easy to leak from the sealing cavity 721, thereby improving the sealing performance of the filter 7.

[0055] The implementation principle of a novel remote and locally controlled hydraulic scotch fork actuator of Example 2 of the present application is as follows: when the cover body 73 is fixed, the rotating rod 744 is driven to rotate, driving the connecting rope 747 to wrap around the outer peripheral surface of the rotating rod 744, pushing the limit block 748 to overcome the elastic force of the elastic member 2 746 and slide in the direction close to the limit cavity 7451, the end face of the limit block 748 is flush with the end face of the fixed block 745, pressing the fixed block 745, driving the connecting rod 1 742 and the connecting rod 2 743 to rotate in the direction away from each other, the end face of the connecting rod 1 742 is flush with the end face of the connecting rod 2 743, and the inner wall of the fixing ring 741 and the fixing groove 745 are flush. The inner wall of 747a is pressed against the two ends of the fixing rod 749 to form a limit, and the limit groove 727 is connected to the limit cavity 7451. The rotating rod 744 is loosened, and the elastic force of the elastic member 746 drives the limit block 748 to slide in the direction close to the fixing groove 732. The end of the limit block 748 is embedded in the fixing groove 732, and the outer wall of the limit block 748 abuts against the inner wall of the fixing groove 732 to form a limit. At the same time, the fixing ring 741 slides along the inner wall of the fixing cavity 724 toward the fixing hole 725. The guide surface 7491 abuts against the inner wall of the fixing ring 741 and guides the fixing rod 749 to slide along the inner wall of the fixing hole 725 toward the fixing groove 732. The end of the fixing rod 749 is embedded in the fixing groove 732, and the outer wall of the fixing rod 749 abuts against the inner wall of the fixing groove 732 to form a limit, so that the cover body 73 is fixed on the shell body 72, and no tools are required for installation, thereby improving the installation efficiency of the filter 7; when the filter element 71 needs to be replaced, the rotating rod 744 is driven to rotate, driving the connecting rope 747 to wrap around the outer circumference of the rotating rod 744, and the connecting rope 747 drives the limiting block 748 to overcome the elastic force of the elastic member 2 746 and slide towards the direction close to the limiting cavity 7451, and the end face of the limiting block 748 is flush with the surface of the fixing block 745, and the fixing block 745 is in the fixing cavity. The limiting effect of the inner wall of 724 disappears, driving the fixing block 745 away from the fixing cavity 724, driving the connecting rod 1 742 and the connecting rod 2 743 to rotate in the direction of approaching each other, pushing the fixing ring 741 along the inner wall of the fixing cavity 724 away from the fixing hole 725, and the pressing effect of the inner circle wall of the fixing ring 741 on the rod surface of the fixing rod 749 disappears. The elastic force of the elastic member 1 7410 drives the fixing rod 749 to slide along the inner wall of the fixing hole 725 in the direction away from the fixing groove 732, and the end of the fixing rod 749 disengages from the fixing groove 732, realizing quick disassembly and assembly between the cover body 73 and the shell body 72, thereby improving the convenience of using the filter 7.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A new type of remote and local controlled hydraulic scotch yoke actuator, characterized by: The actuator (1) comprises an actuator body (1), a base (2), an oil inlet pipeline (3) and a pressure reducing assembly (4), wherein the actuator body (1) is connected to the surface of the base (2), one end of the oil inlet pipeline (3) is connected to the oil inlet end of the actuator body (1), and the other end of the oil inlet pipeline (3) is connected to the surface of the base (2), oil enters the oil inlet end of the actuator body (1) through the oil inlet pipeline (3), and the pressure reducing assembly (4) comprises a pressure reducer (41), a relief valve (42) and a return pipeline (43), wherein the pressure reducer (41) and the relief valve (42) are connected at intervals. On the oil inlet pipeline (3), the overflow valve (42) is located on a side of the oil inlet pipeline (3) close to the actuator body (1); the pressure reducer (41) can limit the flow rate of oil in the oil inlet pipeline (3); one end of the return pipeline (43) is connected to the oil outlet end of the overflow valve (42); the other end of the return pipeline (43) is connected to the surface of the base (2); when the pressure reducer (41) detects that the oil in the oil inlet pipeline (3) is over-pressured, the overflow valve (42) is activated to drive the over-pressure oil in the oil inlet pipeline (3) to be discharged from the return pipeline (43).

2. A novel remote and local controlled hydraulic scotch yoke actuator according to claim 1, characterized in that: The pressure reducing assembly (4) further comprises a pressure gauge 1 (44) and a pressure gauge 2 (45), wherein the pressure gauge 1 (44) and the pressure gauge 2 (45) are connected to the oil inlet pipeline (3) at intervals, and the pressure gauge 1 (44) and the pressure gauge 2 (45) are located on both sides of the pressure reducer (41), and the pressure gauge 2 (45) is located on the side of the pressure reducer (41) close to the actuator body (1), and the pressure gauge 1 (44) can detect the oil pressure in the oil inlet pipeline (3) before the pressure reduction, and the pressure gauge 2 (45) can detect the oil pressure in the oil inlet pipeline (3) after the pressure reduction.

3. A novel remote and local controlled hydraulic scotch yoke actuator according to claim 2, characterized in that: The pressure reducing assembly (4) further comprises a speed regulating valve (47) and a pressure gauge (46). The speed regulating valve (47) is connected to the oil inlet pipeline (3). The speed regulating valve (47) is located on a side of the pressure gauge (45) close to the actuator body (1). The speed regulating valve (47) is capable of regulating and controlling the oil flow in the oil inlet pipeline (3). The pressure gauge (46) is connected to the oil inlet pipeline (3). The pressure gauge (46) is located on a side of the speed regulating valve (47) close to the actuator body (1). The pressure gauge (46) is capable of detecting the oil pressure in the oil inlet pipeline (3).

4. A novel remote and local controlled hydraulic scotch yoke actuator according to claim 3, characterized in that: The invention also comprises a control assembly (5), wherein the control assembly (5) comprises a control pipeline (51), a solenoid valve (52) and a pilot valve (53), wherein the pilot valve (53) is connected to the oil inlet pipeline (3), and the pilot valve (53) is located between the second pressure gauge (45) and the speed regulating valve (47). One end of the control pipeline (51) is connected to the signal port of the pilot valve (53), and the other end of the control pipeline (51) is connected to the oil inlet pipeline (3). The control pipeline (51) is located between the pilot valve (53) and the overflow valve (42), and the solenoid valve (52) is connected to the control pipeline (51). The solenoid valve (52) can control the on and off of the control pipeline (51). When the solenoid valve (52) is disconnected, the oil in the control pipeline (51) stops supplying oil to the signal port of the pilot valve (53), and the pilot valve (53) is disconnected and closes the oil inlet pipeline (3).

5. A novel remote and local controlled hydraulic scotch yoke actuator according to claim 4, characterized in that: The control assembly (5) further comprises a hand valve (54), wherein the hand valve (54) is connected to the control pipeline (51), and the hand valve (54) is located on a side of the solenoid valve (52) close to the pilot valve (53), and the hand valve (54) can control the on-off of the control pipeline (51).

6. A novel remote and local controlled hydraulic scotch yoke actuator according to claim 5, characterized in that: The oil outlet end of the pilot valve (53), the oil outlet end of the pressure reducer (41), the oil outlet end of the manual valve (54) and the oil outlet end of the solenoid valve (52) are all connected to the oil return pipeline.

7. A novel remote and local controlled hydraulic scotch yoke actuator according to claim 2, characterized in that: The oil inlet pipeline (3) is connected to a filter (7), and the filter (7) is located on a side of the pressure gauge (44) away from the pressure reducer (41). The filter (7) is capable of filtering impurities in the oil in the oil inlet pipeline (3).

8. A novel remote and local controlled hydraulic scotch yoke actuator according to claim 7, characterized in that: The filter (7) comprises a filter element (71), a shell (72), a cover (73) and a fixing assembly (74); the shell (72) has an installation cavity (722) for the filter element (71) to be embedded; the inner wall of the installation cavity (722) is provided with a sealing cavity (721) for the cover (73) to be embedded; the outer peripheral surface of the cover (73) can be pressed against the inner wall of the sealing cavity (721) and seal the installation cavity (722); the surface of the shell (72) is provided with an oil inlet (723) for the installation of an oil inlet pipeline (3); the oil inlet (723) is connected to the installation cavity (722); the surface of the cover (73) is provided with an oil outlet (731) for the installation of an oil inlet pipeline (3); the oil outlet (731) is connected to the installation cavity (722); the oil in the oil inlet pipeline (3) is discharged through the oil inlet (7 23) enters the installation cavity (722), the filter element (71) filters the oil and then enters the oil inlet pipe (3) from the oil outlet (731), the fixing assembly (74) includes a plurality of fixing rods (749), the outer peripheral surface of the shell (72) is provided with a plurality of fixing holes (725) for the fixing rods (749) to slide, and the outer peripheral surface of the cover body (73) is provided with a plurality of fixing grooves (732) for the ends of the fixing rods (749) to be embedded, when the fixing holes (725) are connected to the fixing grooves (732), the fixing rods (749) slide along the inner wall of the fixing holes (725) toward the fixing grooves (732), the ends of the fixing rods (749) are embedded in the fixing grooves (732), and the surfaces of the fixing rods (749) are pressed against the inner wall of the fixing grooves (732) to form a limit.

9. A novel remote and local controlled hydraulic scotch yoke actuator according to claim 8, characterized in that: The fixing assembly (74) further comprises a fixing ring (741) and a plurality of elastic members (7410); a fixing cavity (724) for sliding movement of the fixing ring (741) is coaxially opened on the outer peripheral surface of the shell (72); the fixing cavity (724) is connected to a plurality of fixing holes (725); the elastic members (7410) correspond to the fixing rods (749) one by one; one end of the elastic member (7410) in the elastic force direction is connected to the rod surface of the fixing rod (749); and the other end of the elastic member (7410) in the elastic force direction is connected to the fixing hole (725). 5) inner wall, the elastic member (7410) has elastic force driving the fixing rod (749) to slide in the direction close to the fixing cavity (724), and the end of the fixing rod (749) tends to protrude from the inner wall of the fixing cavity (724), and the end of the fixing rod (749) protruding from the fixing cavity (724) is provided with a guide surface (7491), and the guide surface (7491) is in the shape of a circular arc protrusion, and the guide surface (7491) can abut against the inner wall of the fixing ring (741) and guide the fixing rod (749) to slide in the direction close to the fixing groove (732).

10. A novel remote and local controlled hydraulic scotch yoke actuator according to claim 9, characterized in that: The fixing assembly (74) further comprises a connecting rod 1 (742), a connecting rod 2 (743), a rotating rod (744), a fixing block (745), a second elastic member (746), a connecting rope (747) and a limiting block (748), wherein one end of the connecting rod 1 (742) is rotatably connected to the inner wall of the fixing cavity (724) away from the fixing hole (725), the other end of the connecting rod 1 (742) is rotatably connected to the surface of the fixing block (745), and one end of the connecting rod 2 (743) is rotatably connected to the surface of the fixing block (745). The other end of the second connecting rod (743) is rotatably connected to the surface of the fixed ring (741); the surface of the fixed block (745) is provided with a limit cavity (7451) for the limit block (748) to slide; the sliding direction of the limit block (748) and the sliding direction of the fixed ring (741) are perpendicular to each other; the inner wall of the fixed cavity (724) is provided with a limit groove (727) for the end of the limit block (748) to be embedded; when the first connecting rod (742) and the second connecting rod (743) rotate in a direction away from each other, and the first connecting rod (742) and the second connecting rod (743) rotate in a direction away from each other, and the first connecting rod (745) When the rod surface of the first connecting rod (742) is flush with the rod surface of the second connecting rod (743), the inner ring wall of the fixing ring (741) is pressed against the guide surface (7491), and the limiting groove (727) is connected to the limiting cavity (7451); one end of the second elastic member (746) in the elastic direction is connected to the surface of the limiting block (748), and the other end of the second elastic member (746) in the elastic direction is connected to the inner wall of the limiting cavity (7451); the second elastic member (746) has an elastic force to drive the limiting block (748) to slide toward the limiting groove (727). The rotating rod (744) is rotatably connected to the inner wall of the limiting cavity (7451), and the axis of the rotating rod (744) is perpendicular to the axis of the shell (72). One end of the connecting rope (747) is connected to the surface of the limiting block (748), and the other end of the connecting rope (747) is wound around the outer wall of the rotating rod (744), and the connecting rope (747) between the rotating rod (744) and the limiting block (748) is in a taut state.

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