Safe and energy-saving shear blade replacement hydraulic system and control method thereof

Abstract

The invention discloses a safe and energy-saving shear blade replacement hydraulic system and a control method thereof, and relates to the technical field of industrial hydraulics, the system comprises a manual pump, a supercharger, a hydraulic valve group, an oil return filter, an oil tank and an execution element locking cylinder, the first liquid guide pipe extends into the oil tank through a liquid outlet of the oil tank, a first ball valve is arranged on the first liquid guide pipe, a liquid outlet of the manual pump is connected with a liquid inlet end of the supercharger, a liquid outlet end of the supercharger is connected with a liquid inlet of the hydraulic valve group, and a liquid outlet of the hydraulic valve group is connected with a liquid outlet of the oil tank. A liquid outlet of the hydraulic valve group is connected with the actuating element locking cylinder, a liquid inlet end of the oil return filter is connected with a backflow port of the hydraulic valve group, a liquid outlet end of the oil return filter is connected with a second liquid guide pipe, and the second liquid guide pipe extends into the oil tank through a liquid return port of the oil tank.

Description

Technical Field

[0001] The present application relates to the field of industrial hydraulic technology, and in particular to a safe and energy-saving shear blade replacement hydraulic system and a control method thereof. Background Art

[0002] In industrial production, metalworking, and other fields, shearing equipment (such as shears) is widely used to cut materials such as metal and steel. One of the core components of a shear is the blade. The sharpness and installation position of the blade directly affect the precision and effectiveness of the shearing. However, due to frequent use, the blade gradually wears out and requires regular replacement to ensure shear quality and proper operation of the equipment.

[0003] While the hydraulic systems used in shear blade replacement are relatively mature in structure and composition, they still present multiple challenges, including complex electrical wiring, high system pressure, and hazardous working environments. Existing shear blade replacement hydraulic systems typically consist of the following core components: a fuel tank, an electric motor, a radial piston pump, a relief valve, a check valve, a throttle valve, a solenoid ball valve, and a return oil filter. In practice, since the entire hydraulic system relies on the electric motor to continuously drive the radial piston pump, it also consumes a certain amount of electricity. This not only increases factory operating costs but also poses challenges to efficient energy utilization, hindering green production and energy conservation and emission reduction efforts. Furthermore, the operating pressure of the entire hydraulic system can reach 33 MPa. Leaks, aging seals, or failures can cause a high-velocity spray of hydraulic oil, damaging not only the equipment itself but also the operator. Furthermore, the high-pressure oil pipes and fittings in the hydraulic system are at risk of fatigue damage due to prolonged exposure to high pressure, increasing the frequency and difficulty of system maintenance. In the event of an accidental leak or rupture, the high-pressure spray of hydraulic oil can even cause serious accidents such as fires, compromising the safety environment on site. Summary of the Invention

[0004] In view of this, the patent of the present invention provides a safe and energy-saving shear blade replacement hydraulic system and its control method, which uses a manual pump to provide initial power for the system, and the output of the manual pump is directly connected to the booster to achieve low-pressure transmission. It not only effectively reduces the working pressure of the system in the initial stage, but also eliminates the energy consumption problem of long-term operation of the motor. In addition, through the action of the booster, the low-pressure hydraulic oil delivered from the manual pump is boosted to a high pressure that meets the requirements of the shear blade replacement operation, thereby achieving an efficient and safe shear blade replacement function while ensuring the working pressure required by the system. The design of the booster ensures that low pressure is maintained in the section from the manual pump to the booster, and is converted to high pressure that meets the operating requirements from the booster to the actuator, avoiding the full high-pressure operation of the system and significantly reducing the range of the high-pressure area. In addition, the hydraulic components in the high-pressure area are embodied in the system in the form of hydraulic valve groups, thereby improving overall safety.

[0005] On the one hand, the present application provides a safe and energy-saving hydraulic system for shear blade replacement, including: a manual pump, a booster, a hydraulic valve group, an oil return filter, a fuel tank, and an actuator locking cylinder;

[0006] Wherein, the liquid inlet of the manual pump is connected to a first liquid guide pipe, the first liquid guide pipe extends into the fuel tank through the liquid outlet of the fuel tank, a first ball valve is arranged on the first liquid guide pipe, the liquid outlet of the manual pump is connected to the liquid inlet end of the booster, the liquid outlet end of the booster is connected to the liquid inlet of the hydraulic valve group, the liquid discharge port of the hydraulic valve group is connected to the actuator locking cylinder, the liquid inlet end of the oil return filter is connected to the return port of the hydraulic valve group, the liquid discharge end of the oil return filter is connected to a second liquid guide pipe, and the second liquid guide pipe extends into the fuel tank through the liquid return port of the fuel tank.

[0007] Optionally, the hydraulic valve group includes a relief valve, a throttle valve, and a manual two-way two-position directional valve. Wherein, the first end of the relief valve is connected to the liquid outlet end of the booster, the first end of the relief valve is connected to the first end of the manual two-way two-position directional valve through the throttle valve, the second end of the manual two-way two-position directional valve is connected between the liquid inlet end of the oil return filter and the second end of the relief valve, the liquid discharge port of the hydraulic valve group is arranged between the relief valve and the throttle valve, and the return port of the hydraulic valve group is arranged at the connection between the second end of the manual two-way two-position directional valve and the second end of the relief valve.

[0008] Optionally, it further includes a pressure gauge, and the pressure gauge is arranged between the throttle valve and the manual two-way two-position directional valve.

[0009] Optionally, it further includes an air filter, and the air filter is arranged on the fuel tank.

[0010] Optionally, it further includes a liquid level gauge, and the liquid level gauge is arranged on the fuel tank.

[0011] On the other hand, the present application provides a control method for a safe and energy-saving hydraulic system for shear blade replacement, including:

[0012] Obtain a control instruction for the safe and energy-saving hydraulic system for shear blade replacement;

[0013] When the control instruction is used to control the actuator locking cylinder in the safe and energy-saving hydraulic system for shear blade replacement to rise, based on the first valve group state data in the control instruction, control the first ball valve and the second ball valve in the safe and energy-saving hydraulic system for shear blade replacement to remain open, and control the manual two-way two-position directional valve in the safe and energy-saving hydraulic system for shear blade replacement to close;

[0014] controlling the actual pressure of the manual pump in the safety and energy-saving shear blade replacement hydraulic system based on the pressure data in the control instruction until the actual pressure is equal to the pressure data;

[0015] When the actual pressure is equal to the pressure data, the booster in the safety and energy-saving shear blade replacement hydraulic system is controlled based on the boost data in the control instruction to deliver the hydraulic oil in the oil tank of the safety and energy-saving shear blade replacement hydraulic system to the actuator locking cylinder, so that the actuator locking cylinder rises;

[0016] When the control instruction is used to control the lowering of the actuator locking cylinder in the safe and energy-saving shear blade replacement hydraulic system, the manual pump and the booster are controlled to stop working based on the control instruction;

[0017] Based on the second valve group status data in the control instruction, the second ball valve and the manual two-position two-way directional valve are controlled to open, so that the hydraulic oil in the actuator locking cylinder passes through the second ball valve, the throttle valve in the safety and energy-saving shear blade replacement hydraulic system, the manual two-position two-way directional valve and the return oil filter in the safety and energy-saving shear blade replacement hydraulic system and returns to the oil tank.

[0018] Optionally, it also includes:

[0019] Acquiring the sealing state data of the safe and energy-saving shear blade replacement hydraulic system;

[0020] When the sealing state data of the safety and energy-saving shear blade replacement hydraulic system is not completely sealed, the booster is controlled based on the sealing state data to transport the hydraulic oil in the oil tank of the safety and energy-saving shear blade replacement hydraulic system to the actuator locking cylinder.

[0021] Optionally, it also includes:

[0022] When the control instruction is used to control the upward movement of the actuator locking cylinder in the safe and energy-saving shear blade replacement hydraulic system, the actual position of the actuator locking cylinder is obtained;

[0023] When the actual position matches the preset position in the control instruction, controlling the manual pump to stop working;

[0024] When the control instruction is used to control the lowering of the actuator locking cylinder in the safe and energy-saving shear blade replacement hydraulic system, the actual position of the actuator locking cylinder is obtained;

[0025] When the actual position matches the preset position in the control instruction, the manual two-position two-way directional valve is controlled to close.

[0026] Optionally, it also includes:

[0027] Obtain the pressure value of the hydraulic valve group in the safe and energy-saving shear blade replacement hydraulic system;

[0028] When the pressure value is greater than or equal to the pressure threshold, control the opening of the relief valve.

[0029] This application uses a manual pump to provide initial power for the system. The output of the manual pump is directly connected to a supercharger to achieve low-pressure transmission. This not only effectively reduces the working pressure of the system in the initial stage but also eliminates the energy consumption problem of long-term operation of the motor. In addition, through the action of the supercharger, the low-pressure hydraulic oil delivered from the manual pump is pressurized to a high pressure that meets the requirements of the shear blade replacement operation, so as to achieve an efficient and safe shear blade replacement function under the condition of ensuring the working pressure required by the system. The design of the supercharger ensures that the part from the manual pump to the supercharger remains at low pressure, and it is converted to high pressure that meets the operation requirements from the supercharger to the actuator, avoiding the full high-pressure operation of the system and significantly reducing the scope of the high-pressure area. In addition, the hydraulic components in the high-pressure area are embodied in the form of a hydraulic valve group in this system, thus improving the overall safety. In terms of control, by replacing the traditional electromagnetic ball valve and electrical control with a manual two-way two-position directional valve, not only the control structure of the system is simplified, but also the wiring difficulty and power consumption requirements brought by the overall electrical control of the system are eliminated. The manual two-way two-position directional valve has a simple structure and convenient operation, which is suitable for the switching requirement of the oil circuit direction in the shear blade replacement operation. It not only reduces the use of electrical components, reduces the complexity of the system, but also reduces the possibility of electrical faults, further improving the stability and safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Among them:

[0032] Figure 1 is the hydraulic schematic diagram of a safe and energy-saving shear blade replacement hydraulic system in an embodiment;

[0033] Figure 2 is the flowchart of the control method of a safe and energy-saving shear blade replacement hydraulic system in an embodiment;

[0034] 1. Manual pump, 2. Supercharger, 3. Relief valve, 4. Throttle valve, 5. Manual two-way two-position directional valve, 6. Second ball valve, 7. Pressure gauge, 8. Return oil filter, 9. Air filter, 10. First ball valve, 11. Liquid level gauge, 12. Fuel tank, 13. Actuator locking cylinder. Detailed implementation manners

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] In the following description, specific details such as specific system structures and technologies are proposed for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0037] It should be understood that when used in the specification of the present application and the appended claims, the term "comprising" indicates the presence of the described features, wholes, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0038] It should also be understood that the term "and / or" used in the specification of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0039] As used in the specification of the present application and the appended claims, the term "if" can be interpreted as "when", "once", "in response to determining", or "in response to detecting" according to the context. Similarly, the phrase "if determined" or "if [the described condition or event] is detected" can be interpreted as meaning "once determined", "in response to determining", "once [the described condition or event] is detected", or "in response to detecting [the described condition or event]" according to the context.

[0040] In addition, in the description of the specification of the present application and the appended claims, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0041] References to "one embodiment" or "some embodiments" etc. described in the specification of the present application mean that specific features, structures, or characteristics described in connection with that embodiment are included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0042] The present invention will be described in detail below through specific embodiments.

[0043] Please refer to Figure 1 , Figure 1 A safety and energy-saving shear blade replacement hydraulic system provided for an embodiment of the present invention includes: a manual pump 1, a booster 2, a hydraulic valve group, an oil return filter 8, a fuel tank 12, and an actuator locking cylinder 13;

[0044] Wherein, the liquid inlet of the manual pump 1 is connected to a first liquid guide pipe, the first liquid guide pipe extends into the fuel tank through the liquid outlet of the fuel tank 12, a first ball valve 10 is arranged on the first liquid guide pipe, the liquid outlet of the manual pump 1 is connected to the liquid inlet end of the booster 2, the liquid outlet end of the booster 2 is connected to the liquid inlet of the hydraulic valve group, the liquid discharge port of the hydraulic valve group is connected to the actuator locking cylinder 13, the liquid inlet end of the oil return filter 8 is connected to the return port of the hydraulic valve group, the liquid discharge end of the oil return filter 8 is connected to a second liquid guide pipe, and the second liquid guide pipe extends into the fuel tank through the liquid return port of the fuel tank 12.

[0045] Optionally, the hydraulic valve group includes a relief valve 3, a throttle valve 4, and a manual two-position two-way directional valve 5. Among them, the first end of the relief valve 3 is connected to the liquid outlet end of the booster 2, the first end of the relief valve 3 is connected to the first end of the manual two-position two-way directional valve 5 through the throttle valve 4, the second end of the manual two-position two-way directional valve 5 is connected between the liquid inlet end of the oil return filter 8 and the second end of the relief valve 3, the liquid discharge port of the hydraulic valve group is arranged between the relief valve 3 and the throttle valve 4, and the return port of the hydraulic valve group is arranged at the connection between the second end of the manual two-position two-way directional valve 5 and the second end of the relief valve 3.

[0046] Optionally, it further includes a pressure gauge 7, and the pressure gauge 7 is arranged between the throttle valve 4 and the manual two-position two-way directional valve 5.

[0047] Optionally, it further includes an air filter 9, and the air filter 9 is disposed on the fuel tank 12.

[0048] Optionally, it further includes a liquid level gauge 11, and the liquid level gauge 11 is disposed on the fuel tank 12.

[0049] Optionally, the drain port of the hydraulic valve group is connected to the actuator locking cylinder 13 through a second ball valve 6.

[0050] A manual pump is used to provide initial power for the system. The output of the manual pump is directly connected to a supercharger to achieve low-pressure transmission. This not only effectively reduces the working pressure of the system in the initial stage but also eliminates the energy consumption problem of long-term operation of the motor. In addition, through the action of the supercharger, the low-pressure hydraulic oil delivered from the manual pump is boosted to a high pressure that meets the requirements of the shear blade replacement operation. Thus, under the condition of ensuring the working pressure required by the system, an efficient and safe shear blade replacement function is achieved. The design of the supercharger ensures that the part from the manual pump to the supercharger remains at low pressure, and it is converted to high pressure that meets the operation requirements from the supercharger to the actuator, avoiding the full high-pressure operation of the system, significantly reducing the scope of the high-pressure area. In addition, the hydraulic components in the high-pressure area are embodied in the form of a hydraulic valve group in this system, thereby enhancing the overall safety.

[0051] In a possible implementation manner, as Figure 2 shown, the present application provides a control method for a safe and energy-saving shear blade replacement hydraulic system, including:

[0052] S101. Obtain a control instruction for the safe and energy-saving shear blade replacement hydraulic system;

[0053] S102. When the control instruction is used to control the actuator locking cylinder in the safe and energy-saving shear blade replacement hydraulic system to rise, based on the first valve group status data in the control instruction, control the first ball valve and the second ball valve in the safe and energy-saving shear blade replacement hydraulic system to remain open, and control the manual two-way two-position directional valve in the safe and energy-saving shear blade replacement hydraulic system to close;

[0054] S103. Control the actual pressure of the manual pump in the safe and energy-saving shear blade replacement hydraulic system based on the pressure data in the control instruction until the actual pressure is equal to the pressure data;

[0055] S104. When the actual pressure is equal to the pressure data, control the supercharger in the safe and energy-saving shear blade replacement hydraulic system to deliver the hydraulic oil in the fuel tank of the safe and energy-saving shear blade replacement hydraulic system to the actuator locking cylinder based on the supercharging data in the control instruction, so that the actuator locking cylinder rises;

[0056] S105. When the control instruction is used to control the lowering of the locking cylinder of the actuator in the safe and energy-saving shear blade replacement hydraulic system, control the manual pump and the supercharger to stop working based on the control instruction;

[0057] S106. Control the opening of the second ball valve and the manual two-way two-position directional valve based on the second valve group status data in the control instruction, so that the hydraulic oil in the locking cylinder of the actuator returns to the fuel tank through the second ball valve, the throttle valve in the safe and energy-saving shear blade replacement hydraulic system, the manual two-way two-position directional valve, and the return oil filter in the safe and energy-saving shear blade replacement hydraulic system.

[0058] In terms of control, by replacing the traditional electromagnetic ball valve and electrical control with a manual two-way two-position directional valve, not only the control structure of the system is simplified, but also the wiring difficulty and power consumption requirements brought by the overall electrical control of the system are eliminated. The manual two-way two-position directional valve has a simple structure and convenient operation, and is suitable for the switching requirement of the oil circuit direction in the shear blade replacement operation. It not only reduces the use of electrical components, lowers the complexity of the system, but also reduces the possibility of electrical faults, further improving the stability and safety of the system.

[0059] In a possible implementation manner, it further includes:

[0060] Obtain the airtight state data of the safe and energy-saving shear blade replacement hydraulic system;

[0061] When the airtight state data of the safe and energy-saving shear blade replacement hydraulic system is not completely airtight, control the supercharger to convey the hydraulic oil in the fuel tank of the safe and energy-saving shear blade replacement hydraulic system to the locking cylinder of the actuator based on the airtight state data.

[0062] In a possible implementation manner, it further includes:

[0063] When the control instruction is used to control the rising of the locking cylinder of the actuator in the safe and energy-saving shear blade replacement hydraulic system, obtain the actual position of the locking cylinder of the actuator;

[0064] When the actual position matches the preset position in the control instruction, control the manual pump to stop working;

[0065] When the control instruction is used to control the lowering of the locking cylinder of the actuator in the safe and energy-saving shear blade replacement hydraulic system, obtain the actual position of the locking cylinder of the actuator;

[0066] When the actual position matches the preset position in the control instruction, control the manual two-way two-position directional valve to close.

[0067] In a possible implementation manner, it further includes:

[0068] Obtain the pressure value of the hydraulic valve group in the safe and energy-saving shearing blade replacement hydraulic system;

[0069] When the pressure value is greater than or equal to the pressure threshold, control the opening of the relief valve.

[0070] Exemplarily, open the first ball valve 10, open the second ball valve 6, operate the manual two-position two-way directional valve 5 to the closed working position, and provide hydraulic oil for the system by operating the manual pump 1. At this time, the hydraulic oil passes from the oil tank 12 through the first ball valve 10 and the booster 2 to the actuator locking cylinder 13, and the oil is supplied to the entire system. When the pressure of the pump reaches the set value, the piston of the booster 2 starts to move and continuously presses the oil into the system until the high-pressure set pressure is reached and the piston stops moving. When there is a leak in the pipeline or the oil volume is consumed, the piston continues to move. The system continuously supplies high-pressure oil, and at this time, the actuator locking cylinder 13 starts to rise; stop operating the manual pump 1. Since the check valve inside the booster 2 and the manual two-position two-way directional valve 5 are in the closed working position, the system is in a pressure-holding state, and at this time, the actuator locking cylinder 13 stops moving; continue to operate the manual pump 1 until the actuator locking cylinder 13 rises to the highest position and stop operating the manual pump; operate the manual two-position two-way directional valve 5 to the open working position, and the actuator starts to descend under the action of the external pressure of the actuator locking cylinder 13 and the spring inside the locking cylinder, and the hydraulic oil is pressed back into the system. At this time, the hydraulic oil passes through the second ball valve 6, the throttle valve 4, the manual two-position two-way directional valve 5, and the return oil filter 8 and returns to the oil tank 12; at this time, operate the manual two-position two-way directional valve 5 to the closed working position, and the actuator locking cylinder 13 stops descending, and the system is in a pressure-holding state. If the system pressure exceeds the set value of the relief valve 3, the relief valve 3 opens and relieves pressure; at this time, operate the manual two-position two-way directional valve 5 to the open working position, and the actuator locking cylinder 13 continues to descend until it descends to the lowest position. At this time, if the system pressure exceeds the set value of the relief valve 3, the relief valve 3 opens and relieves pressure; during operation, if the system pressure exceeds the set value of the relief valve 3, the relief valve 3 opens and relieves pressure, and the relieved oil returns to the oil tank 12 through the return oil filter 8.

[0071] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the above-mentioned division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above.

[0072] The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A hydraulic system for safely and energy-efficiently replacing cutting blades, characterized in that, Comprising: A manual pump, a supercharger, a hydraulic valve group, an oil return filter, a fuel tank, and an actuator locking cylinder; Wherein, the liquid inlet of the manual pump is connected to a first liquid guide pipe, the first liquid guide pipe extends into the fuel tank through the liquid outlet of the fuel tank, a first ball valve is arranged on the first liquid guide pipe, the liquid outlet of the manual pump is connected to the liquid inlet end of the supercharger, the liquid outlet end of the supercharger is connected to the liquid inlet of the hydraulic valve group, the liquid discharge port of the hydraulic valve group is connected to the actuator locking cylinder, the liquid inlet end of the oil return filter is connected to the return port of the hydraulic valve group, the liquid discharge end of the oil return filter is connected to a second liquid guide pipe, and the second liquid guide pipe extends into the fuel tank through the liquid return port of the fuel tank.

2. The safety and energy-saving shear blade replacement hydraulic system according to claim 1, wherein, The hydraulic valve group includes a relief valve, a throttle valve, and a manual two-position two-way directional valve. Among them, the first end of the relief valve is connected to the liquid outlet end of the supercharger, the first end of the relief valve is connected to the first end of the manual two-position two-way directional valve through the throttle valve, the second end of the manual two-position two-way directional valve is connected between the liquid inlet end of the oil return filter and the second end of the relief valve, the liquid discharge port of the hydraulic valve group is arranged between the relief valve and the throttle valve, and the return port of the hydraulic valve group is arranged at the connection between the second end of the manual two-position two-way directional valve and the second end of the relief valve.

3. The safety and energy-saving shear blade replacement hydraulic system according to claim 2, characterized in that, It further includes a pressure gauge, and the pressure gauge is arranged between the throttle valve and the manual two-position two-way directional valve.

4. The safety and energy-saving shear blade replacement hydraulic system according to claim 1, characterized in that It further includes an air filter, and the air filter is arranged on the fuel tank.

5. The safety and energy-saving shear blade replacement hydraulic system according to claim 1, characterized in that, It further includes a liquid level gauge, and the liquid level gauge is arranged on the fuel tank.

6. A control method for a hydraulic system for replacing a safety and energy-saving cutting blade, characterized in that, Comprising: Obtaining a control instruction for a safety and energy-saving shearing blade replacement hydraulic system; When the control instruction is used to control the actuator locking cylinder in the safety and energy-saving shearing blade replacement hydraulic system to rise, based on the first valve group state data in the control instruction, controlling the first ball valve and the second ball valve in the safety and energy-saving shearing blade replacement hydraulic system to remain open, and controlling the manual two-position two-way directional valve in the safety and energy-saving shearing blade replacement hydraulic system to close; Based on the pressure data in the control instruction, controlling the actual pressure of the manual pump in the safety and energy-saving shearing blade replacement hydraulic system until the actual pressure is equal to the pressure data; When the actual pressure is equal to the pressure data, based on the boosting data in the control instruction, controlling the supercharger in the safety and energy-saving shearing blade replacement hydraulic system to convey the hydraulic oil in the fuel tank of the safety and energy-saving shearing blade replacement hydraulic system to the actuator locking cylinder, so that the actuator locking cylinder rises; When the control instruction is used to control the actuator locking cylinder in the safety and energy-saving shearing blade replacement hydraulic system to descend, controlling the manual pump and the supercharger to stop working based on the control instruction; Based on the second valve group state data in the control instruction, controlling the second ball valve and the manual two-position two-way directional valve to open, so that the hydraulic oil in the actuator locking cylinder returns to the fuel tank through the second ball valve, the throttle valve in the safety and energy-saving shearing blade replacement hydraulic system, the manual two-position two-way directional valve, and the oil return filter in the safety and energy-saving shearing blade replacement hydraulic system.

7. The control method of a safety and energy-saving shear blade replacement hydraulic system according to claim 6, characterized in that, It further includes: Obtain the airtight state data of the safety and energy-saving shear blade replacement hydraulic system; When the airtight state data of the safety and energy-saving shear blade replacement hydraulic system is not completely airtight, control the supercharger to deliver the hydraulic oil in the fuel tank of the safety and energy-saving shear blade replacement hydraulic system to the actuator locking cylinder based on the airtight state data.

8. A control method for a hydraulic system for replacing a safety and energy-saving cutting blade according to claim 6, characterized in that, It further includes: When the control instruction is used to control the actuator locking cylinder in the safety and energy-saving shear blade replacement hydraulic system to rise, obtain the actual position of the actuator locking cylinder; When the actual position matches the preset position in the control instruction, control the manual pump to stop working; When the control instruction is used to control the actuator locking cylinder in the safety and energy-saving shear blade replacement hydraulic system to descend, obtain the actual position of the actuator locking cylinder; When the actual position matches the preset position in the control instruction, control the manual two-position two-way directional valve to close.

9. The control method of a hydraulic system for replacing a safety and energy-saving cutting blade according to claim 6, characterized in that, It further includes: Obtain the pressure value of the hydraulic valve group in the safety and energy-saving shear blade replacement hydraulic system; When the pressure value is greater than or equal to the pressure threshold, control the overflow valve to open.

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