Hydraulic oil way balancing device in gas-liquid linkage actuating mechanism

Abstract

The invention relates to the technical field of pipeline valve control, and particularly discloses a hydraulic oil way balancing device in a gas-liquid linkage actuating mechanism, which comprises a shell assembly, valve control assemblies are arranged above the shell assembly, and an oil way balancing assembly is arranged between the valve control assemblies. According to the double-oil-tank device, the piston moving cavity and the reset spring are arranged, and the combined structure of the spring and the piston is utilized, so that oil can automatically conduct an oil way under the pressure, and the problem that the oil level is unbalanced after the double-oil-tank device is used for a long time is solved; secondly, a one-way valve and an impact buffering cavity are arranged, and the combination of the valve and a pipeline is utilized, so that when hydraulic impact is generated, the impact force of liquid can be weakened through buffering, the liquid temporarily stays in the device, the influence of the hydraulic impact on the device structure is weakened, and the problem of device loss caused by the hydraulic impact when the valve is closed is solved.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline valve control, and more specifically to a hydraulic oil circuit balancing device in a gas-liquid linkage actuator. Background Art

[0002] The gas-hydraulic actuator is a mechatronic device that uses air pressure or hydraulic pressure as a power source and achieves force transmission and execution through the conversion of gas-hydraulic transmission mode. The balancing device of the hydraulic oil circuit plays a vital role in the gas-hydraulic actuator, which can ensure the stable operation of the actuator, protect the components of the actuator, improve system safety, and reduce maintenance costs.

[0003] The existing hydraulic oil circuit balancing device has the following main structures: hydraulic cylinder, hydraulic energy storage chamber, hydraulic integrated block and a series of connecting mechanisms and brackets. Its working method mainly includes the following steps: when the system starts working, the hydraulic pump delivers hydraulic oil to the hydraulic cylinder to build up a certain pressure; during the operation of the system, the hydraulic balancing device realizes the balance control of the actuator by adjusting the pressure and flow in the hydraulic cylinder. When the actuator is subjected to external force, the hydraulic cylinder will generate a corresponding reaction force to resist the influence of the external force, thereby maintaining the balance state of the system; when the system has pressure fluctuations or energy loss, the hydraulic accumulator will release the stored hydraulic energy in time to compensate for the deficiency of the system; in special circumstances, such as leakage of the hydraulic oil circuit or system failure, it provides safety protection function. The above structure and working method basically meet the needs of oil circuit balance, but there are still some shortcomings.

[0004] Through observation and research on existing hydraulic oil circuit balancing devices, it can be found that traditional hydraulic control components have the following problems: First, the oil tank structure will cause oil level differences inside the double oil tanks and pressure differences between the oil tanks due to the hysteresis of the oil and the airtightness of the device itself under long-term repeated opening and closing. This will affect the overall operation stability of the device and pose potential risks; in addition, at the moment the valve is closed, due to the inertia of the fluid, the liquid will quickly change its motion state in the pipeline, and the kinetic energy of the fluid will quickly be converted into pressure energy, thereby forming a very high instantaneous pressure peak in the pipeline. This pressure wave will propagate in the pipeline and may cause damage to the system if not handled. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a hydraulic oil circuit balancing device in a gas-liquid linkage actuator to solve the problems existing in the above-mentioned background technology.

[0006] The present invention provides the following technical solution: a hydraulic oil circuit balancing device in a gas-liquid linkage actuator, comprising a housing assembly, a valve control assembly is installed above the housing assembly, the number of valve control assemblies is two, an oil circuit balancing assembly is installed between the two valve control assemblies, a controlled pipeline is installed below the housing assembly, buffer assemblies are installed on both sides of the controlled pipeline, the upper end of the buffer assembly is connected to the bottom of the housing assembly, and the housing assembly includes a protective top cover; Furthermore, an open end oil chamber and a closed end oil chamber are provided below the protective top cover, the open end oil chamber and the closed end oil chamber are located at both ends of the outer shell assembly and are symmetrically distributed, a first lower oil pipeline is installed above the open end oil chamber, an open oil tank is installed above the first lower oil pipeline, a second lower oil pipeline is installed above the closed end oil chamber, a closed oil tank is installed above the second lower oil pipeline, air pumps are installed above both the open oil tank and the closed oil tank, a driving rack is installed between the open end oil chamber and the closed end oil chamber, and sealing plates are installed at both ends of the driving rack.

[0007] Furthermore, a locking assembly is installed on the side of the open end oil chamber close to the interior of the shell assembly, and a rack displacement chamber is provided on the side of the locking assembly away from the open end oil chamber. A driven rack is installed inside the rack displacement chamber, and driving teeth are provided on the inner sides of the driving rack and the driven rack. A valve gear is installed between the driving teeth, and the valve gear is meshed with the driving rack and the driven rack. A valve control shaft is installed at the central axis of the valve gear, and the lower end of the valve control shaft is connected to the interior of the controlled pipeline.

[0008] Furthermore, gas-liquid barrier plugs are installed inside the open oil tank and the closed oil tank, oil transfer pipes are installed on the side of the first lower oil pipeline close to the closed oil tank and the side of the second lower oil pipeline close to the open oil tank, two oil accumulation chambers are installed between the two oil transfer pipes, return springs are installed inside the oil accumulation chambers, and the return springs are in a naturally stretched state, piston moving chambers are installed between the oil accumulation chambers, and a conducting piston is installed inside the piston moving chamber. The conducting piston can move inside the piston moving chamber, and a connecting pipeline is opened inside the connecting piston. There are two connecting pipelines and they are arranged in parallel.

[0009] Furthermore, a locking chamber is provided between the open end oil chamber and the rack displacement chamber, a back impact pipe is installed below the locking chamber, and the upper end of the back impact pipe is located inside the locking chamber, an impact buffer chamber is provided on the side of the closed end oil chamber close to the inside of the shell assembly, a collecting pipe is installed between the locking chamber and the impact buffer chamber, the collecting pipe connects the locking chamber and the impact buffer chamber, the bottom of the locking chamber is inclined, an impact liquid pipe is installed below the impact buffer chamber, the upper end of the impact liquid pipe is connected to one end of the impact buffer chamber close to the driven rack, a leakage funnel is installed inside the impact buffer chamber, a leakage pipe is installed below the leakage funnel, and the upper end of the leakage pipe is connected to the center position of the leakage funnel.

[0010] Furthermore, a liquid discharge switch is installed at the bottom end of the discharge pipe, and the liquid discharge switch is connected to the controlled pipe. A one-way valve is installed at the bottom end of the impact liquid pipe, and the one-way valve is connected to the controlled pipe.

[0011] Furthermore, an impact liquid passage chamber is provided inside the one-way valve, a sealing round shell is installed inside the impact liquid passage chamber, a longitudinal through hole is provided in the sealing round shell, a sealing spring is installed on the side of the sealing round shell away from the controlled pipeline, a through plate is installed on the end of the sealing spring away from the sealing round shell, and a through hole is provided in the center of the through plate.

[0012] Furthermore, the locking assembly includes an electromagnetic fixing block, pulling springs are installed on both sides of the electromagnetic fixing block, and a main locking block and a secondary locking block are installed on one end of the two pulling springs away from the electromagnetic fixing block. A restraining cross bar is installed on the side of the main locking block and the secondary locking block close to the dorsal impact pipe, and the two restraining cross bars are vertically staggered. A locking through hole is opened on the end of the two restraining cross bars close to the dorsal impact pipe, and the position of the locking through hole is directly above the dorsal impact pipe. A locking spring is installed below the protective top cover, and the locking spring is located directly above the dorsal impact pipe. A locking strip is installed on the lower end of the locking spring, and the locking strip can move up and down inside the locking through hole.

[0013] Technical effects and advantages of the present invention: 1. The present invention is provided with a piston moving chamber and a return spring, which is beneficial to utilizing the combined structure of the spring and the piston, so that when the pressure difference between the double oil tanks exceeds a certain range, the oil circuit can be automatically opened, thereby adjusting the balance of the oil circuit, and solving the problem of oil level imbalance caused by the double oil tank device after long-term use.

[0014] 2. The present invention is provided with a one-way valve and an impact buffer chamber, which is conducive to the use of valve components and pipeline combinations, so that when hydraulic shock occurs around the valve, the liquid can be buffered by the one-way valve to reduce the impact force, and the gushing liquid is temporarily retained inside the locking chamber and the impact buffer chamber, thereby reducing the impact of the hydraulic shock on the valve peripheral structure and solving the problem of device loss caused by the hydraulic shock when the valve is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the device state when the valve of the present invention is closed.

[0018] Figure 4 It is a schematic diagram of the position of the oil circuit balancing component of the present invention.

[0019] Figure 5 It is a schematic diagram of the internal structure of the oil circuit balancing component of the present invention.

[0020] Figure 6 It is a schematic diagram of the impact buffer cavity structure and its installation according to the present invention.

[0021] Figure 7 The diagram is a schematic diagram of the impact liquid pipeline structure and its installation according to the present invention.

[0022] Figure 8 It is a schematic diagram of the internal structure of the one-way valve of the present invention.

[0023] Fig. 9 It is a structural schematic diagram of the locking assembly of the present invention in the unlocked state.

[0024] Fig.10 It is a structural schematic diagram of the locking state of the locking assembly of the present invention.

[0025] The accompanying drawings are marked as follows: 1. Shell assembly; 101. Protective top cover; 102. Open end oil chamber; 103. Close end oil chamber; 104. Rack displacement chamber; 105. Locking chamber; 106. Impact buffer chamber; 2. Valve control assembly; 201. Air pump; 2011. Air-liquid barrier plug; 202. Open oil tank; 203. Close oil tank; 204. First oil pipeline; 205. Second oil pipeline; 206. Drive rack; 2061. Sealing plate; 2062. Drive tooth pattern; 207. Valve gear; 208. Valve control shaft; 209. Driven rack; 3. Oil balance assembly; 301. Oil transfer pipeline; 302. Oil accumulation chamber; 303. Piston displacement Dynamic chamber; 304, conducting piston; 3041, connecting pipeline; 305, reset spring; 4, locking assembly; 401, main locking block; 402, secondary locking block; 403, restraining bar; 4031, locking through hole; 404, electromagnetic fixing block; 405, pulling spring; 406, locking bar; 407, locking spring; 5, controlled pipeline; 6, buffer assembly; 601, leakage funnel; 602, leakage pipeline; 6021, liquid discharge switch; 603, impact liquid pipeline; 604, back impact pipeline; 605, one-way valve; 6051, sealing round shell; 6052, sealing spring; 6053, circulation plate; 6054, impact liquid through chamber; 606, collecting pipeline. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The hydraulic oil circuit balancing device in a gas-liquid linkage actuator involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0027] Reference Figure 1 The present invention provides a hydraulic oil circuit balancing device in a gas-liquid linkage actuator, comprising a housing component 1, a valve control component 2 is installed above the housing component 1, the number of the valve control components 2 is two, an oil circuit balancing component 3 is installed between the two valve control components 2, a controlled pipeline 5 is installed below the housing component 1, buffer components 6 are installed on both sides of the controlled pipeline 5, the upper end of the buffer component 6 is connected to the bottom of the housing component 1, and the housing component 1 includes a protective top cover 101; In this embodiment, it is necessary to specifically explain that: the controlled pipeline 5 is a controlled liquid delivery pipeline, a valve is installed inside the controlled pipeline 5, and the controlled pipeline 5 is opened and closed by the valve. The valve control component 2 applies downward pressure to the oil through the gas source power, so that the oil is transferred, thereby driving the valve to open or close. At the moment when the controlled pipeline 5 is closed, due to the initial kinetic energy of the liquid and its own inertia, the liquid will produce a hydraulic shock phenomenon at the valve. The buffer component 6 plays a role in buffering the hydraulic shock. A part of the liquid will enter the inside of the housing component 1 for buffering. When the liquid inside the controlled pipeline 5 is flat, the buffering liquid will be discharged back to the inside of the controlled pipeline 5, thereby protecting the internal structure of the device. After the hydraulic oil tank has undergone multiple hydraulic actions, the inside of the valve control component 2 will have an uneven oil level problem. When the pressure difference exceeds a specific range, the oil circuit balance component 3 will be turned on, so that the oil circuit inside the valve control component 2 is restored to balance under the action of gravity, thereby solving the problem of uneven oil circuit of the hydraulic oil tank after long-term use.

[0028] The main difference between this embodiment and the prior art is that this embodiment uses a piston and spring structure to adjust the oil circuit balance, and opens additional space and pipelines to reduce the impact force of the liquid, specifically in the oil circuit balance component 3 and the buffer component 6; The above structure is the main structure of this embodiment, which solves the problem of unbalanced oil levels in the double oil tanks and also solves the problem of damage to the device caused by hydraulic shock when the valve is closed.

[0029] Reference Figure 2 and Figure 3An open end oil chamber 102 and a closed end oil chamber 103 are provided below the protective top cover 101. The open end oil chamber 102 and the closed end oil chamber 103 are located at both ends of the housing component 1 and are symmetrically distributed. A first oil lowering pipeline 204 is installed above the open end oil chamber 102. An open oil tank 202 is installed above the first oil lowering pipeline 204. A second oil lowering pipeline 205 is installed above the closed end oil chamber 103. A closed oil tank 203 is installed above the second oil lowering pipeline 205. Air pumps 201 are installed above both the open oil tanks 202 and the closed oil tanks 203. A driving rack 206 is installed between the open end oil chamber 102 and the closed end oil chamber 103. The driving rack Sealing plates 2061 are installed at both ends of 206, a locking assembly 4 is installed on the side of the open end oil chamber 102 close to the inside of the housing assembly 1, a rack displacement chamber 104 is provided on the side of the locking assembly 4 away from the open end oil chamber 102, a driven rack 209 is installed inside the rack displacement chamber 104, driving teeth 2062 are provided on the inner sides of the driving rack 206 and the driven rack 209, a valve gear 207 is installed between the driving teeth 2062, the valve gear 207 is meshed with the driving rack 206 and the driven rack 209, a valve control shaft 208 is installed at the center axis of the valve gear 207, and the lower end of the valve control shaft 208 is connected to the inside of the controlled pipeline 5.

[0030] In this embodiment, it is necessary to specifically explain that: in the initial state, the valve is closed, at this time, the oil levels inside the open oil tank 202 and the closed oil tank 203 are balanced, the space of the open end oil chamber 102 and the closed end oil chamber 103 is equal, the longitudinal symmetry axes of the driving rack 206 and the driven rack 209 coincide, and the locking component 4 plays a role in locking the positions of the driving rack 206 and the driven rack 209. When the air pump 201 above the open oil tank 202 is turned on, the air pump 201 generates downward air pressure to push the hydraulic oil inside the open oil tank 202 downward, and the locking component 4 is unlocked at the same time. At this time, the hydraulic oil inside the open oil tank 202 is pushed into the interior of the first lower oil pipeline 204, and a relatively small amount enters the oil circuit balancing component 3. The oil passes through the first lower oil pipeline. The oil pipeline 204 enters the interior of the open end oil chamber 102, and the pressure of the oil pushes the driving rack 206 to move in the direction of the closed oil tank 203, so that the space of the open end oil chamber 102 is expanded, and the sealing plate 2061 plays a sealing role to prevent the oil from leaking from the open end oil chamber 102 to the driving rack 206. With the movement of the driving rack 206, the space of the closed end oil chamber 103 is compressed, and the oil inside the closed end oil chamber 103 is pressed into the interior of the second lower oil pipeline 205, and enters the interior of the closed oil tank 203 through the second lower oil pipeline 205, and the oil level inside the closed oil tank 203 rises. The air pump 201 is an existing structure, and the specific structure and connection method of the air pump 201 are not described in detail in this embodiment; When the driving rack 206 moves in the direction of closing the oil tank 203, the sealing plate 2061 rubs against the valve gear 207 and drives the valve gear 207 to rotate. The rotation of the valve gear 207 drives the valve control shaft 208 to rotate, and the valve is opened. At the same time, the valve gear 207 drives the driven rack 209 to move in the direction of the locking component 4. The driven rack 209 and the driving rack 206 are meshed with the valve gear 207, which is beneficial to enhancing the stability of the device as a whole and the valve. When the air pump 201 above the closed oil tank 203 is started, the air pump 201 above the open oil tank 202 stops working, and the oil inside the closed oil tank 203 is pressed into the closed end oil chamber 103 through the second lower oil pipeline 205, and the oil pushes the driving rack 206 to move in the direction close to the open oil tank 202, and the driving rack 206 drives the driven rack 209 to move away from the locking component 4 through the valve gear 207. At the same time, the space of the open end oil chamber 102 is compressed, and a part of the oil in the open end oil chamber 102 is pressed back into the open oil tank 202, and the driving rack 206 returns to the initial position, and the valve is closed. Then the locking component 4 locks the positions of the driving rack 206 and the driven rack 209.

[0031] Reference Figure 4 and Figure 5 , gas-liquid barrier plugs 2011 are installed inside the open oil tank 202 and the closed oil tank 203, oil transfer pipes 301 are installed on the side of the first oil pipeline 204 close to the closed oil tank 203 and the side of the second oil pipeline 205 close to the open oil tank 202, two oil accumulation chambers 302 are installed between the two oil transfer pipes 301, and return springs 305 are installed inside the oil accumulation chambers 302, and the return springs 305 are in a naturally stretched state. Piston moving chambers 303 are installed between the oil accumulation chambers 302, and a conducting piston 304 is installed inside the piston moving chamber 303. The conducting piston 304 can move inside the piston moving chamber 303, and a connecting pipeline 3041 is opened inside the connecting piston 304. There are two connecting pipelines 3041 and they are arranged in parallel.

[0032] In this embodiment, it is necessary to specifically explain that: the gas-liquid barrier plug 2011 serves to isolate gas and oil. After the gas-liquid linkage device performs a long-term opening and closing action, the double oil tanks will form uneven oil levels due to the hysteresis of oil movement and the airtightness of the device, thereby causing potential operational risks to the entire device. Since there is a pressure difference between the open oil tank 202 and the closed oil tank 203 at this time, the oil will push the conducting piston 304 from the side with high pressure to the side with low pressure. At the same time, the return spring 305 on this side is stretched, and the return spring 305 on the other side is compressed. When this When the pressure difference exceeds a specific range, the movement distance of the conducting piston 304 causes the front end of the connecting pipe 3041 to connect with the oil accumulation chamber 302 on the other side, and the internal spaces of the two oil accumulation chambers 302 are connected. The oil is transferred under the drive of pressure, thereby alleviating the uneven oil level between the open oil tank 202 and the closed oil tank 203. When the oil on both sides is transferred spontaneously, the pressure difference between the open oil tank 202 and the closed oil tank 203 is reduced, and the reset spring 305 begins to shrink and pulls the conducting piston 304 back to the initial position, thereby disconnecting the connection between the two oil accumulation chambers 302 again.

[0033] Reference Figure 6 A locking chamber 105 is provided between the open end oil chamber 102 and the rack displacement chamber 104, a back impact pipe 604 is installed below the locking chamber 105, and the upper end of the back impact pipe 604 is located inside the locking chamber 105, and an impact buffer chamber 106 is provided on the side of the closed end oil chamber 103 close to the inside of the housing assembly 1, a collecting pipe 606 is installed between the locking chamber 105 and the impact buffer chamber 106, and the collecting pipe 606 connects the locking chamber 105 and the impact buffer chamber 106, and the bottom of the locking chamber 105 is designed to be inclined, and an impact liquid pipe 603 is installed below the impact buffer chamber 106, and the upper end of the impact liquid pipe 603 is connected to one end of the impact buffer chamber 106 close to the driven rack 209, and a leakage funnel 601 is installed inside the impact buffer chamber 106, and a leakage pipe 602 is installed below the leakage funnel 601, and the upper end of the leakage pipe 602 is connected to the center position of the leakage funnel 601.

[0034] In this embodiment, it is necessary to specifically explain that: when the valve is closed, due to the inertia of the liquid, a large amount of impact force is generated on both sides of the valve in a short time, and the impact liquid pipeline 603 and the back impact pipeline 604 are respectively connected to the positions on both sides of the valve of the controlled pipeline 5. Under the action of the impact force, a part of the liquid flows into the impact liquid pipeline 603 and the back impact pipeline 604, and enters the locking chamber 105 and the impact buffer chamber 106. The liquid with the impact force will stimulate the locking component 4. At the same time, since the bottom of the locking chamber 105 is inclined, the liquid flowing into the locking chamber 105 will flow to the inside of the collecting pipe 606 due to gravity, and will be collected into the inside of the impact buffer chamber 106 through the collecting pipe 606. The liquid in the impact buffer chamber 106 will be concentrated in the leakage funnel 601. When the liquid in the controlled pipeline 5 is transported smoothly, the switch at the bottom of the leakage pipe 602 can be opened to put the concentrated liquid in the leakage funnel 601 back into the controlled pipeline 5 through the leakage pipe 602.

[0035] Reference Figure 7 and Figure 8 A discharge switch 6021 is installed at the bottom end of the discharge pipe 602, and the discharge switch 6021 is connected to the controlled pipe 5. A one-way valve 605 is installed at the bottom end of the impact liquid pipe 603, and the one-way valve 605 is connected to the controlled pipe 5. An impact liquid passage chamber 6054 is provided inside the one-way valve 605. A blocking round shell 6051 is installed inside the impact liquid passage chamber 6054. The blocking round shell 6051 is provided with a longitudinal through hole. A blocking spring 6052 is installed on the side of the blocking round shell 6051 away from the controlled pipe 5. A circulation plate 6053 is installed on the end of the blocking spring 6052 away from the blocking round shell 6051, and a through hole is provided in the center of the circulation plate 6053.

[0036] In this embodiment, it is necessary to specifically explain that: at the moment when the valve is closed, the liquid on both sides of the valve in the controlled pipeline 5 generates impact force, the liquid on one side of the valve enters the impact liquid pipeline 603 through the buffer of the one-way valve 605, and the liquid on the other side enters the interior of the housing component 1 through the back impact pipeline 604, and at this time, the liquid discharge switch 6021 is in a closed state; When the liquid rushes out from the inside of the controlled pipeline 5, the impact force pushes the blocking shell 6051, the blocking spring 6052 is compressed by the blocking shell 6051, the impact liquid pipeline 603 and the impact liquid cavity 6054 are connected, the liquid enters the impact liquid cavity 6054, and enters the inside of the blocking shell 6051 through the longitudinal through hole of the blocking shell 6051, and then the liquid flows into the other side of the impact liquid pipeline 603 through the through hole in the center of the circulation plate 6053 and enters the inside of the outer shell assembly 1; when the liquid inside the controlled pipeline 5 is stable, the liquid release switch 6021 can be opened to discharge the liquid inside the leakage funnel 601 back to the inside of the controlled pipeline 5 through the leakage pipeline 602.

[0037] Reference Fig. 9 and Fig.10 The locking assembly 4 includes an electromagnetic fixing block 404, and pulling springs 405 are installed on both sides of the electromagnetic fixing block 404. The ends of the two pulling springs 405 away from the electromagnetic fixing block 404 are respectively installed with a main locking block 401 and a secondary locking block 402. The main locking block 401 and the secondary locking block 402 are installed with a restraining bar 403 on one side close to the dorsal impact pipe 604. The two restraining bars 403 are vertically staggered. The ends of the two restraining bars 403 close to the dorsal impact pipe 604 are both provided with locking through holes 4031, and the position of the locking through holes 4031 is located directly above the dorsal impact pipe 604. A locking spring 407 is installed below the protective top cover 101, and the locking spring 407 is located directly above the dorsal impact pipe 604. A locking bar 406 is installed at the lower end of the locking spring 407, and the locking bar 406 can move up and down inside the locking through hole 4031.

[0038] In this embodiment, it should be specifically explained that: the driving rack 206 and the driven rack 209 are both provided with a slot on the same side of the sealing plate 2061, the interior of the electromagnetic fixing block 404 and the upper end of the locking spring 407 are electrically connected to the air pump 201, and in the initial valve closing state, the main locking block 401 and the auxiliary locking block 402 are respectively fixed in the slots to limit the movement of the driving rack 206 and the driven rack 209 to prevent the valve from closing unstably. At this time, the two restraining horizontal bars 403 are separated, and when the air pump 201 above the oil tank 202 is opened and started, the electromagnetic fixing block 404 is also opened, and the magnetism of the electromagnetic fixing block 404 will pull the spring 405 back to a position close to the electromagnetic fixing block 404, thereby making the main locking block 401 The secondary locking block 402 leaves the slot, pulling the spring 405 in a compressed state, and the movement of the primary locking block 401 and the secondary locking block 402 drives the two restraining horizontal bars 403 to contract. At this time, the positions of the locking through holes 4031 overlap each other, and at the same time, the circuit at the upper end of the locking spring 407 is briefly connected. After briefly lifting the locking spring 407, the locking spring 407 is released downward, driving the locking bar 406 to move downward, and the locking bar 406 enters the interior of the two locking through holes 4031, so that the position of the restraining horizontal bar 403 is locked by the locking bar 406. At this time, the locking assembly 4 is in an unlocked state, and the valve is opened. When the air pump 201 above the oil tank 202 stops working, the control circuit in the electromagnetic fixing block 404 is also disconnected; When the air pump 201 above the closed oil tank 203 is turned on, the driving rack 206 and the driven rack 209 are reset, the valve is closed, and a hydraulic shock is generated at the valve. The gushing liquid enters from the upper end of the back impact pipe 604, and the liquid exerts an upward impact force on the locking bar 406. The locking spring 407 is compressed briefly, and the locking bar 406 is pushed out of the locking through hole 4031. At this time, the restraining cross bar 403 loses its restriction, and the pulling spring 405 stretches and pushes the main locking block 401 and the secondary locking block 402, so that the main locking block 401 and the secondary locking block 402 extend into the slots of the driving rack 206 and the driven rack 209 to lock them. The electromagnetic fixing block 404 is an existing structure. The specific structure and connection method of the electromagnetic fixing block 404 are not described in detail in this embodiment. In addition, the relevant circuit design of the locking spring 407 also belongs to the existing technology. Therefore, this application does not make detailed limitations.

[0039] Working principle of the present invention: The main problem solved by this embodiment is: by providing the piston moving chamber 303 and the return spring 305, and utilizing the combined structure of the spring and the piston, when the pressure difference between the double oil tanks exceeds a certain range, the spring support force can be overcome to automatically conduct the oil circuit, thereby adjusting the balance of the oil circuit, solving the problem of oil level imbalance caused by the double oil tank device after long-term use; Secondly, by providing a one-way valve 605 and an impact buffer chamber 106, and utilizing a combination of valve devices and pipelines, when a hydraulic shock occurs around the valve, the liquid can be buffered by the one-way valve 605 to reduce the impact force, and the gushing liquid can be temporarily retained inside the locking chamber 105 and the impact buffer chamber 106, thereby reducing the impact of the hydraulic shock on the structure around the valve and solving the problem of device loss caused by the hydraulic shock when the valve is closed.

[0040] The specific steps are as follows: First, the whole device is installed around the valve of the controlled pipeline 5. In the initial state, the valve is closed. At this time, the oil levels in the open oil tank 202 and the closed oil tank 203 are balanced, the spaces of the open end oil chamber 102 and the closed end oil chamber 103 are equal, the longitudinal symmetry axes of the driving rack 206 and the driven rack 209 coincide, the main locking block 401 and the secondary locking block 402 are respectively fixed in the card slot to limit the movement of the driving rack 206 and the driven rack 209, and the two restraining horizontal bars 403 are separated; When it is necessary to open the valve for discharging, the air pump 201 above the oil tank 202 is started to work, and the air pump 201 generates downward air pressure to push the gas-liquid barrier plug 2011 downward, thereby pushing the hydraulic oil in the oil tank 202 downward, and at the same time, the electromagnetic fixing block 404 is also opened, and the magnetism of the electromagnetic fixing block 404 will pull the spring 405 back to a position close to the electromagnetic fixing block 404, so that the main locking block 401 and the secondary locking block 402 leave the slot, and the pulling spring 405 is in a compressed state. The movement of the main locking block 401 and the auxiliary locking block 402 drives the two restraining horizontal bars 403 to contract. At this time, the positions of the locking through holes 4031 overlap each other. At the same time, the circuit at the upper end of the locking spring 407 is temporarily connected. After the locking spring 407 is briefly lifted, the locking spring 407 is released downward, driving the locking bar 406 to move downward. The locking bar 406 enters the interior of the two locking through holes 4031, so that the position of the restraining horizontal bar 403 is locked by the locking bar 406. At this time, the locking assembly 4 is in the unlocked state. At this time, the hydraulic oil in the open oil tank 202 is pushed into the first lower oil pipeline 204 by air pressure, and a relatively small amount of oil enters the oil transfer pipeline 301. The oil enters the open end oil chamber 102 through the first lower oil pipeline 204. The pressure of the oil pushes the drive rack 206 to move toward the closed oil tank 203, so that the space of the open end oil chamber 102 is expanded. With the movement of the drive rack 206, the space of the closed end oil chamber 103 is compressed, and the oil in the closed end oil chamber 103 is pressed into the second lower oil pipeline 205, and enters the closed oil tank 203 through the second lower oil pipeline 205, and the oil level in the closed oil tank 203 rises. When the driving rack 206 moves in the direction of closing the oil tank 203, the sealing plate 2061 rubs against the valve gear 207 and drives the valve gear 207 to rotate. The rotation of the valve gear 207 drives the valve control shaft 208 to rotate, and the valve is opened. At the same time, the valve gear 207 drives the driven rack 209 to move in the direction of the locking component 4. When the air pump 201 above the closed oil tank 203 is turned on, the air pump 201 above the open oil tank 202 stops working, the control circuit in the electromagnetic fixing block 404 is disconnected, and the oil inside the closed oil tank 203 is pressed into the closed end oil chamber 103 through the second lower oil pipeline 205, and the oil pushes the driving rack 206 to move in the direction close to the open oil tank 202, and the driving rack 206 drives the driven rack 209 to move away from the locking component 4 through the valve gear 207. At the same time, the space of the open end oil chamber 102 is compressed, and a part of the oil in the open end oil chamber 102 is pressed back into the open oil tank 202, and the driving rack 206 and the driven rack 209 return to the initial position, and the valve is closed; When the valve is closed, due to the inertia of the liquid, the kinetic energy will impact the surrounding area of ​​the valve, and the liquid on one side of the valve enters the one-way valve 605. The impact force will push the blocking shell 6051, so that the blocking spring 6052 is compressed by the blocking shell 6051, and the impact liquid pipeline 603 and the impact liquid through cavity 6054 are connected. The liquid enters the impact liquid through cavity 6054 and enters the interior of the blocking shell 6051 through the longitudinal through hole of the blocking shell 6051. Then, the liquid passes through the through hole in the center of the circulation plate 6053 and the impact liquid pipeline 603 into the interior of the impact buffer cavity 106. The liquid on the other side enters the interior of the locking cavity 105 through the back impact pipeline 604. The liquid flows into the locking cavity 105 from the upper end of the back impact pipe 604, and the liquid exerts an upward impact force on the locking strip 406, the locking spring 407 is compressed briefly, and the locking strip 406 is pushed out of the locking through hole 4031. At this time, the restraining horizontal strip 403 loses its restriction, and the pulling spring 405 stretches and pushes the main locking block 401 and the secondary locking block 402, so that the main locking block 401 and the secondary locking block 402 extend into the slots of the driving rack 206 and the driven rack 209, and the driving rack 206 and the driven rack 209 are locked; Since the bottom of the locking chamber 105 is designed to be inclined, the liquid flowing into the locking chamber 105 will flow to the inside of the collecting pipe 606 due to gravity, and will be collected into the inside of the impact buffer chamber 106 through the collecting pipe 606. The liquid in the impact buffer chamber 106 will be concentrated inside the leakage funnel 601. When the liquid in the controlled pipe 5 is stable, the liquid release switch 6021 can be opened to discharge the liquid in the leakage funnel 601 back to the inside of the controlled pipe 5 through the leakage pipe 602. After the gas-liquid linkage device has been opened and closed for a long time and repeatedly, the double oil tanks will form uneven oil levels due to the hysteresis of the oil movement and the airtightness of the device. There will be a certain pressure difference between the open oil tank 202 and the closed oil tank 203. The pressure causes the oil to push the conducting piston 304 from the side with high pressure to the side with low pressure. At the same time, the return spring 305 on this side is stretched, and the return spring 305 on the other side is compressed. When this pressure difference exceeds a specific range, the moving distance of the conducting piston 304 makes the front end of the connecting pipe 3041 It is connected to the oil accumulation chamber 302 on the other side, and the internal spaces of the two oil accumulation chambers 302 are connected. Driven by pressure, the oil is transferred between the oil accumulation chambers 302, thereby adjusting the oil levels of the open oil tank 202 and the closed oil tank 203. After the oil on both sides is transferred spontaneously, the pressure difference between the open oil tank 202 and the closed oil tank 203 is reduced. When the pulling force of the return spring 305 is greater than the pressure, the return spring 305 begins to pull the conduction piston 304 back to the initial position, thereby disconnecting the connection between the two oil accumulation chambers 302 again.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic oil circuit balancing device in a gas-liquid linkage actuator, comprising a housing assembly (1), characterized in that: A valve control assembly (2) is installed above the housing assembly (1), the number of the valve control assemblies (2) being two, an oil circuit balancing assembly (3) being installed between the two valve control assemblies (2), a controlled pipeline (5) being installed below the housing assembly (1), buffer assemblies (6) being installed on both sides of the controlled pipeline (5), the upper end of the buffer assembly (6) being connected to the bottom of the housing assembly (1), and the housing assembly (1) comprising a protective top cover (101).

2. The hydraulic oil circuit balancing device in a gas-liquid linkage actuator according to claim 1, characterized in that: An open end oil chamber (102) and a closed end oil chamber (103) are provided below the protective top cover (101); the open end oil chamber (102) and the closed end oil chamber (103) are located at two ends of the housing component (1) and are symmetrically distributed; a first oil lowering pipeline (204) is installed above the open end oil chamber (102); an open oil tank (202) is installed above the first oil lowering pipeline (204); a second oil lowering pipeline (205) is installed above the closed end oil chamber (103); a closed oil tank (203) is installed above the second oil lowering pipeline (205); an air pump (201) is installed above both the open oil tank (202) and the closed oil tank (203); a driving rack (206) is installed between the open end oil chamber (102) and the closed end oil chamber (103); sealing plates (2061) are installed at both ends of the driving rack (206).

3. The hydraulic oil circuit balancing device in a gas-liquid linkage actuator according to claim 2, characterized in that: A locking assembly (4) is installed on a side of the open end oil chamber (102) close to the inside of the housing assembly (1), and a rack displacement chamber (104) is provided on a side of the locking assembly (4) away from the open end oil chamber (102). A driven rack (209) is installed inside the rack displacement chamber (104). Driving teeth (2062) are provided on the inner sides of the driving rack (206) and the driven rack (209). A valve gear (207) is installed between the driving teeth (2062). The valve gear (207) meshes with the driving rack (206) and the driven rack (209). A valve control shaft (208) is installed at the center axis of the valve gear (207), and the lower end of the valve control shaft (208) is connected to the inside of the controlled pipeline (5).

4. The hydraulic oil circuit balancing device in a gas-liquid linkage actuator according to claim 2, characterized in that: The open oil tank (202) and the closed oil tank (203) are both installed with gas-liquid blocking plugs (2011); the first oil down pipe (204) is installed on one side close to the closed oil tank (203) and the second oil down pipe (205) is installed on one side close to the open oil tank (202); two oil accumulation chambers (302) are installed between the two oil transfer pipes (301); a return spring (305) is installed inside the oil accumulation chamber (302); the return spring (305) is in a naturally stretched state; a piston moving chamber (303) is installed between the oil accumulation chambers (302); a conducting piston (304) is installed inside the piston moving chamber (303); the conducting piston (304) can move inside the piston moving chamber (303); a connecting pipeline (3041) is opened inside the connecting piston (304); there are two connecting pipelines (3041) arranged in parallel.

5. The hydraulic oil circuit balancing device in a gas-liquid linkage actuator according to claim 3, characterized in that: A locking chamber (105) is provided between the open end oil chamber (102) and the rack displacement chamber (104); a back impact pipe (604) is installed below the locking chamber (105); the upper end of the back impact pipe (604) is located inside the locking chamber (105); an impact buffer chamber (106) is provided on a side of the closed end oil chamber (103) close to the inside of the housing assembly (1); a collecting pipe (606) is installed between the locking chamber (105) and the impact buffer chamber (106); the collecting pipe (606) connects the locking chamber (105) and the impact buffer chamber (106) to the back impact pipe (604). 5) is connected to the impact buffer chamber (106), the bottom of the locking chamber (105) is designed to be inclined, an impact liquid pipeline (603) is installed below the impact buffer chamber (106), the upper end of the impact liquid pipeline (603) is connected to an end of the impact buffer chamber (106) close to the driven rack (209), a leakage funnel (601) is installed inside the impact buffer chamber (106), a leakage pipeline (602) is installed below the leakage funnel (601), and the upper end of the leakage pipeline (602) is connected to the center position of the leakage funnel (601).

6. The hydraulic oil circuit balancing device in a gas-liquid linkage actuator according to claim 5, characterized in that: A liquid discharge switch (6021) is installed at the bottom end of the discharge pipe (602), and the liquid discharge switch (6021) is connected to the controlled pipe (5). A one-way valve (605) is installed at the bottom end of the impact liquid pipe (603), and the one-way valve (605) is connected to the controlled pipe (5).

7. The hydraulic oil circuit balancing device in a gas-liquid linkage actuator according to claim 6, characterized in that: The one-way valve (605) is provided with an impact liquid passage chamber (6054) inside, a sealing round shell (6051) is installed inside the impact liquid passage chamber (6054), the sealing round shell (6051) is provided with a longitudinal through hole, a sealing spring (6052) is installed on a side of the sealing round shell (6051) away from the controlled pipeline (5), a through plate (6053) is installed on an end of the sealing spring (6052) away from the sealing round shell (6051), and a through hole is provided at the center of the through plate (6053).

8. The hydraulic oil circuit balancing device in a gas-liquid linkage actuator according to claim 5, characterized in that: The locking assembly (4) comprises an electromagnetic fixing block (404), and pulling springs (405) are installed on both sides of the electromagnetic fixing block (404); a main locking block (401) and a secondary locking block (402) are installed on one end of the two pulling springs (405) away from the electromagnetic fixing block (404); a restraining cross bar (403) is installed on one side of the main locking block (401) and the secondary locking block (402) close to the back impact pipe (604); the two restraining cross bars (403) are vertically staggered, and the two restraining cross bars (403) are arranged to A locking through hole (4031) is provided at one end of the protective top cover (101) close to the back impact pipe (604), and the locking through hole (4031) is located directly above the back impact pipe (604). A locking spring (407) is installed below the protective top cover (101), and the locking spring (407) is located directly above the back impact pipe (604). A locking bar (406) is installed at the lower end of the locking spring (407), and the locking bar (406) can move up and down inside the locking through hole (4031).

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