Self-adaptive variable circulation hydraulic power system

Abstract

The invention belongs to the technical field of hydraulic control, and particularly relates to a self-adaptive variable circulation hydraulic power system which comprises a power unit, a first electromagnetic direction valve, an overflow valve, a one-way valve, a second electromagnetic direction valve, a proportional direction valve, an auxiliary unit, an execution unit and a programmable controller. According to the self-adaptive variable-cycle hydraulic power system, the hydraulic system is built, sensor data are collected and transmitted to the controller for logical operation, the controller can perform operation through scientific data, automatically integrate an energy storage value and generate a preset flow-time curve, PID fine adjustment is assisted, and the control accuracy and stability of the system are improved; through matching with hardware including various output ranges of servo pump set output flow, energy accumulator feedback pressure and the like, a pressure working range, an energy storage range and a pump set output curve of an energy accumulator are generated, and through comparison between an actual operation curve and an initialized preset curve, loss caused by instant failure in the working process is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic control, and in particular relates to an adaptive variable cycle hydraulic power system. Background Art

[0002] There are many types of hydraulic power systems. The present invention mainly describes a self-adaptive, variable-cycle energy storage hydraulic power system.

[0003] In the traditional plastic machinery industry, hydraulic systems are mostly used as power to transmit mechanical energy, thereby achieving high-load and high-speed execution of actions. In some high-speed equipment, due to the need to achieve large-displacement output in a short period of time, if an oil pump motor unit is used to directly drive the output power, a high-power and high-displacement oil pump motor unit will be required. In addition, there is a certain speed climbing time during the startup process, which will increase the dry cycle time of the execution action. The use of an energy storage hydraulic system can avoid this disadvantage.

[0004] The energy storage hydraulic system is a system that uses hydraulic accumulators to store and release energy. This system can effectively manage the energy in the hydraulic system and improve the efficiency and performance of the system. In the traditional energy storage hydraulic system, the oil pump motor is used as the output power source to store hydraulic potential energy in the accumulator. When the hydraulic system needs to work, its accumulator will instantly output hydraulic kinetic energy to complete high-speed, high-response and high-load execution. The general design of the hydraulic energy storage system is based on the product molding cycle and the output of the actuator to select the oil pump motor and accumulator configuration. Its operating principle is to complete the oil pump motor energy storage once within the cycle according to the product molding cycle to ensure the hydraulic kinetic energy required for the normal operation of the next product. The closer the molding time is to the energy storage time, the more energy-saving the power system is. If the energy storage cycle is less than the molding cycle, the system will output a switch quantity to cut off the output of the oil pump motor to the accumulator to prevent the system from overloading and excessive energy consumption. However, since the equipment needs to adapt to various molds, the sizes and action requirements of different molds will affect the actual output value of the energy storage system. If no manual proofreading is done, it will cause performance overflow, resulting in energy waste, and unnecessary losses such as increased product costs for the manufacturer. In addition, the adjustment of the hydraulic system requires professional factory personnel to perform, and the manufacturer will be very passive in this adjustment link. In addition, in the traditional energy storage device power control system, due to hardware and control conditions, it is impossible to obtain the actual efficiency of the current operation of the power system, and it cannot be compared with its initial efficiency, so it is impossible to predict the potential failure information of the system in advance. This hydraulic system can effectively solve this problem. Summary of the invention

[0005] The purpose of the present invention is to provide an adaptive variable cycle hydraulic power system, aiming to solve the technical problems of excessive energy consumption, performance overflow, and energy waste in the prior art, and to provide early feedback of potential failure risk information of the hydraulic system.

[0006] To achieve the above-mentioned purpose, an adaptive variable cycle hydraulic power system provided by an embodiment of the present invention includes:

[0007] A power unit, the power unit includes an oil pump connected to a servo motor, the oil pump is used to output hydraulic oil, driven by the servo motor, and can provide variable flow conditions to provide power for the entire system;

[0008] A first electromagnetic directional valve, wherein the first electromagnetic directional valve is provided with an oil inlet P, an oil return port T, a working oil port A and a working oil port B. The P port and the A port of the first electromagnetic directional valve are connected to the outlet of the oil pump, and the T port and the B port of the first electromagnetic directional valve are connected to the low-pressure pipeline of the oil return tank. The valve is controlled by a hydraulic sensor. When the energy storage system is lower than or higher than a set value, the hydraulic sensor transmits a signal to switch the working state of the first electromagnetic directional valve;

[0009] A relief valve, which is connected to the branch of the oil pump outlet. When the system pressure exceeds the set value, the oil is unloaded back to the oil tank, providing pressure safety protection for the entire hydraulic system;

[0010] A one-way valve, which is arranged in the oil circuit and is used to isolate the oil pump outlet pressure from the accumulator pressure;

[0011] The second solenoid directional valve has an oil inlet P, an oil return port T and a working oil port A. The valve is used to release pressure from the accumulator pressure pipeline after the system stops working;

[0012] A proportional directional valve, wherein the proportional directional valve is provided with an oil inlet P, an oil return port T, a working oil port A and a working oil port B, and the oil inlet P of the proportional directional valve is connected to the hydraulic oil;

[0013] an auxiliary unit, the auxiliary unit comprising an accumulator and a hydraulic pressure sensor and a hydraulic pressure sensor, the hydraulic pressure sensor and the hydraulic pressure sensor being used to monitor the charging pressure, the minimum working pressure, the maximum working pressure and the supplementary pressure of the accumulator;

[0014] The execution unit includes an oil cylinder, which is connected to the working oil port A and the working oil port B of the proportional directional valve, and realizes the telescopic action through the control of the proportional directional valve, and is used for clamping work.

[0015] As an optional solution of the present invention, the motor is a servo motor, which can adjust the rotation speed of the oil pump according to system requirements, thereby adjusting the output flow of the hydraulic oil.

[0016] As an optional solution of the present invention, the first electromagnetic directional valve is an electromagnetic reversing valve, which detects the current accumulator pressure through the sensor B1, and transmits an electrical signal -Y102 to control the state of the electromagnetic reversing valve after judging the conditions.

[0017] As an optional solution of the present invention, the set pressure value of the relief valve can be manually adjusted according to actual working requirements.

[0018] As an optional solution of the present invention, the one-way valve ensures the one-way flow of oil under specific pressure conditions.

[0019] As an optional solution of the present invention, the second electromagnetic directional valve realizes switching through a control signal -Y103, and the second electromagnetic directional valve is used for depressurizing the energy storage device when shutting down.

[0020] As an optional solution of the present invention, the proportional directional valve is proportionally controlled by the control signal -Y201, and can accurately adjust the output flow according to the size of the input analog signal, thereby controlling the movement speed of the cylinder.

[0021] As an optional solution of the present invention, the hydraulic sensor is used to monitor the minimum working pressure, the maximum working pressure, and the supplementary pressure of the accumulator, and the hydraulic sensor is used to monitor the air bag pressure of the accumulator.

[0022] As an optional solution of the present invention, it also includes an oil pipeline and a joint. The oil pipeline adopts a high-pressure oil-resistant rubber tube, and the joint is a quick joint, which is easy to install and disassemble.

[0023] Based on the same inventive concept, the present application also provides an adaptive variable cycle hydraulic power device, including an adaptive variable cycle hydraulic power system.

[0024] The above one or more technical solutions in the adaptive variable cycle hydraulic power system provided by the embodiment of the present invention have at least one of the following technical effects:

[0025] The adaptive variable cycle hydraulic power system provided by the present application is achieved by building a hydraulic system, adding sensors and controllers to the hydraulic system. After the sensors collect data, they are transmitted to the controller for logical operations. The controller performs operations through scientific data, integrates the energy storage value by itself, generates a preset flow curve, and is assisted by PID fine-tuning to increase its control accuracy. Pressure closed-loop control is performed at the pressure end. The process is an open-loop to closed-loop control mode. Through the above control mode, the hydraulic energy required by the required actuator is collected, and the required value is automatically matched with the system storage energy. This process can directly correct the hydraulic working range of the accumulator, and adaptively adjust the oil pump output curve for precise control to achieve the purpose of energy saving and consumption reduction. The controller will monitor the power output value in real time, compare it with its initial value, and present the actual efficiency of the current hydraulic system. When the efficiency is reduced, it will prompt equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 A schematic diagram of an adaptive variable cycle hydraulic power system provided in an embodiment of the present invention.

[0028] Figure 2 A control logic diagram of an adaptive variable cycle hydraulic power system provided in an embodiment of the present invention.

[0029] Among them, the reference numerals in the figure are:

[0030] M1, motor; P, oil pump; V1, first solenoid directional valve; V2, overflow valve; V3, check valve; V4, second solenoid directional valve; V5, proportional directional valve; B1, hydraulic sensor; B2, hydraulic sensor; A1, oil cylinder. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0035] In one embodiment of the present invention, Figures 1-2 As shown, an adaptive variable cycle hydraulic power system is provided, including:

[0036] The power unit includes a motor M1 and an oil pump P connected to the motor M1. The oil pump P is used to output hydraulic oil to provide power for the entire system. The power unit is composed of a pump P connected to the motor M1. The motor M1 is preferably a servo motor, which can adjust the speed of the oil pump P according to system requirements. When the system requires a larger flow of hydraulic oil, the motor increases the speed so that the oil pump P outputs more hydraulic oil; conversely, when the system requires a smaller flow, the motor reduces the speed and reduces the output flow of the oil pump P. This not only meets the power requirements under different working conditions, but also effectively saves energy. The oil pump P is a gear pump, and its working principle is to convert mechanical energy into hydraulic energy through the meshing and separation of gears, providing a stable hydraulic oil output for the entire system. The pump group is constructed by a servo motor M1 + a quantitative pump, which can achieve flow conversion by modifying the speed of the servo motor M1, and is a necessary execution part of the adaptive variable cycle.

[0037] The first solenoid directional valve V1 is provided with an oil inlet P, an oil return port T, a working oil port A and a working oil port B. The oil inlet P of the first solenoid directional valve V1 is connected to the outlet of the oil pump P. The oil inlet P, the oil return port T, the working oil port A and the working oil port B of the first solenoid directional valve V1 are used to control the flow direction of the hydraulic oil. The first solenoid directional valve V1 adopts a solenoid reversing valve. Its oil inlet P is connected to the outlet of the oil pump P, and the oil return port T, the working oil port A and the working oil port B are used to control the flow direction of the hydraulic oil. The solenoid reversing valve realizes the reversing action through the solenoid control signal -Y102. When -Y102 applies a positive current, the reversing valve switches to a working position, and the hydraulic oil flows from the oil inlet P to the working oil port A or the working oil port B; when -Y102 is disconnected, the reversing valve switches to another working position, changing the flow direction of the hydraulic oil, thereby realizing the preliminary control of the subsequent oil circuit. The purpose of the first solenoid directional valve V1 is to start the pump station stamping or implement the pressure relief function, or when the electronic components are aged and fail, the pressure value exceeds the control range, it will be forcibly closed to protect the oil pump servo motor M1.

[0038] Overflow valve V2, overflow valve V2 is connected to the branch road of the oil pump P outlet. When the system pressure exceeds the set value, the oil is unloaded back to the oil tank, which plays a role of pressure limiting protection. Overflow valve V2 is connected to the branch road of the pump outlet. An adjustable overflow valve is selected, and its set pressure value can be manually adjusted according to actual work requirements. For example, in this system, when the system pressure exceeds the set safety pressure value, such as 10MPa, the overflow valve opens, and the oil is unloaded back to the oil tank through the overflow valve to prevent the system pressure from being too high and causing damage to the components, which plays a role of pressure limiting protection.

[0039] One-way valve V3 is set in the oil circuit and allows oil to flow in one direction to prevent oil backflow. One-way valve V3 is set in the oil circuit. When the pressure in the oil circuit reaches or exceeds the opening pressure and the oil flow direction conforms to the conduction direction of the one-way valve, the oil can pass through the one-way valve, effectively preventing oil backflow and ensuring the normal operation of the system oil circuit. Its actual function is to isolate the accumulator pressure area from the pump port pressure. When the pressure value exceeds the set value, it can be used to unload the pump port pressure. When the pump port pressure is 0, the one-way valve plays an isolation role.

[0040] The second electromagnetic directional valve V4 is a zero leakage electromagnetic ball valve, and its purpose is to allow the pressure at the accumulator end to be released through the valve when the equipment stops working.

[0041] Proportional directional valve V5, proportional directional valve V5 is provided with an oil inlet P, an oil return port T, a working oil port A and a working oil port B. The oil inlet P of the proportional directional valve V5 is connected to the hydraulic oil. The proportional directional valve V5 uses a high-precision proportional directional valve. Its oil inlet P is connected to the hydraulic oil, the oil return port T returns the oil, and the working oil port A and the working oil port B are connected to the actuator cylinder A1. The proportional directional valve V5 is proportionally controlled by the control signal -Y201, and can accurately adjust the output flow and pressure according to the size of the input signal. For example, when a smaller -Y201 signal is input, the proportional directional valve outputs a smaller flow and pressure, causing the cylinder A1 to move slowly; when a larger -Y201 signal is input, the proportional directional valve outputs a larger flow and pressure, causing the cylinder A1 to move quickly, thereby accurately controlling the movement speed and output force of the cylinder A1.

[0042] Auxiliary unit, the auxiliary unit includes accumulator and hydraulic sensor B1 and hydraulic sensor B2. Hydraulic sensor B1 and hydraulic sensor B2 are used to monitor the charging pressure, minimum working pressure, maximum working pressure and supplementary pressure of the accumulator. The accumulator is connected to the system, and its function is to store and release hydraulic oil to stabilize the system pressure. The oil pump stores enough hydraulic oil for the accumulator during the cycle; when the system needs additional hydraulic oil, the accumulator releases hydraulic oil to meet the instantaneous needs of the system. The B1 sensor is used to collect the oil pressure of the accumulator, and the sensor at B2 is used for the pressure inside the accumulator airbag.

[0043] The execution unit includes a cylinder A1, which is connected to the working oil port A and the working oil port B of the proportional directional valve V5. The telescopic action is realized through the control of the proportional directional valve V5 and is used for clamping. The hydraulic sensor B1 is used to monitor the working pressure of the accumulator, including P1, P2, and Pc. The hydraulic sensor B2 is used to monitor the bladder air pressure P0 of the accumulator. For example, when the pressure of the accumulator is lower than the supplementary pressure Pc, the hydraulic sensor B1 sends a signal, the Y102 signal is activated, and the pump group enters the energy storage operation; when the pressure of the accumulator reaches the maximum working pressure P2, the hydraulic sensor B2 sends a signal, Y102 is disconnected, and the pump group is unloaded to prevent the energy storage pressure from being too high, protect the system, and avoid problems such as excessive energy consumption.

[0044] The actuator unit includes a cylinder A1, which has a cylinder diameter of 220mm, a stroke of 1000mm, and can provide a maximum clamping force of 100KN. Cylinder A1 is connected to the A and B ports of the proportional directional valve V5, and its telescopic action is accurately controlled by the proportional directional valve to achieve clamping. In actual application, when the workpiece needs to be clamped, the proportional directional valve V5 controls the hydraulic oil to flow into the rodless chamber of the cylinder A1 according to the control signal -Y201, pushing the piston to extend, thereby clamping the workpiece; when the workpiece needs to be released, the proportional directional valve controls the hydraulic oil to flow into the rod chamber of the cylinder A1, causing the piston to retract and release the workpiece.

[0045] In another embodiment of the present invention, the motor M1 is a servo motor, which can adjust the rotation speed of the oil pump P according to system requirements, thereby adjusting the output flow of the hydraulic oil.

[0046] In another embodiment of the present invention, the first electromagnetic directional valve V1 is an electromagnetic reversing valve, and the reversing action is realized by the electromagnetic control signal -Y102.

[0047] In another embodiment of the present invention, the set pressure value of the relief valve V2 can be manually adjusted according to actual working requirements.

[0048] In another embodiment of the present invention, a non-return valve V3 ensures effective isolation of the motor pump unit from the accumulator pressure.

[0049] In another embodiment of the present invention, the second solenoid directional valve V4 is switched by the control signal -Y103 to relieve the accumulator pressure during shutdown.

[0050] In another embodiment of the present invention, the proportional directional valve V5 is proportionally controlled by the control signal -Y201, and can accurately adjust the output flow and pressure according to the size of the input signal, thereby controlling the movement speed and output force of the cylinder A1.

[0051] In another embodiment of the present invention, the hydraulic pressure sensor B1 is used to monitor the minimum working pressure P of the accumulator. 1 and maximum working pressure P 2 and replenishment pressure Pc, hydraulic sensor B2 is used to monitor the charging pressure P of the accumulator 0 .

[0052] In another embodiment of the present invention, it also includes an oil pipeline and a joint. The oil pipeline adopts a high-pressure oil-resistant rubber tube, and the joint is a quick joint, which is easy to install and disassemble. The oil pipeline adopts a high-pressure oil-resistant rubber tube, such as the Gates brand high-pressure oil-resistant rubber tube, which can withstand the high pressure of the system and has good flexibility, which is convenient for the layout and installation of the pipeline. The joint is a quick joint, which is easy to install and disassemble, and improves the maintenance efficiency of the system. In the actual installation process, according to the layout of the system and the position of the components, the oil pipeline is reasonably arranged to ensure that the oil can flow smoothly while reducing pressure loss.

[0053] Based on the same inventive concept, the present application also provides an adaptive variable cycle hydraulic power device, including an adaptive variable cycle hydraulic power system. The present application builds a hydraulic system, including hardware conditions such as a variable pump group and a sensor. The hardware only provides an environment that can be realized. The real adaptive variable cycle function can only be realized by writing a program on the controller and linear tuning.

[0054] The adaptive variable cycle hydraulic power system provided by the present application is constructed by adding sensors and controllers to the hydraulic system. After the sensors collect data, they are transmitted to the controller for logical operations. The controller performs operations based on scientific data, integrates the energy storage value by itself, generates a preset flow-time curve, and is supplemented by PID fine-tuning to increase its control accuracy and stability. The principle is a control mode that compares the actual motion curve with the preset motion curve at the millisecond level, calculates the difference, and then quickly calculates and corrects the subsequent motion curve. During initialization, the controller can collect various process parameters set in the system through the initialization mode, including the running speed, acceleration, distance of the execution action, and the working cycle of the whole machine, and other data to calculate the hydraulic energy required for a single cycle of the actuator. By matching with the hardware including the output flow of the servo pump group, the accumulator feedback pressure and other output ranges, the accumulator pressure working range, energy storage range, and pump group output curve can be self-generated. This is a variable process. Through the above logic, it can adapt to the best energy efficiency value of multiple working conditions, and enable the system to achieve more use and more discharge, less use and less discharge. In addition, the system is monitored in real time by the controller, and the actual operation curve can be compared with the initialization preset curve. If the difference is too large, the hydraulic system efficiency level can be used in advance to judge the failure of some functional parts in the hydraulic system, and the potential failure risk can be fed back in advance to reduce the loss caused by instantaneous failure during the working process.

[0055] 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adaptive variable cycle hydraulic power system, characterized in that: include: A power unit, the power unit comprising an oil pump (P) connected to a servo motor (M1), the oil pump (P) being used to output hydraulic oil, driven by the servo motor (M1), and being able to provide variable flow conditions, thereby providing power for the entire system; A first electromagnetic directional valve (V1), the first electromagnetic directional valve (V1) is provided with an oil inlet P, an oil return port T, a working oil port A and a working oil port B, the P port and the A port of the first electromagnetic directional valve (V1) are connected to the outlet of the oil pump (P), the T port and the B port of the first electromagnetic directional valve (V1) are connected to the low-pressure pipeline of the oil return tank, the valve is controlled by a hydraulic sensor (B1), when the energy storage system is lower than or higher than a set value, the hydraulic sensor (B1) transmits a signal to switch the working state of the first electromagnetic directional valve (V1); A relief valve (V2), the relief valve (V2) is connected to the branch line at the outlet of the oil pump (P), and when the system pressure exceeds a set value, the oil is unloaded back to the oil tank, thereby providing pressure safety protection for the entire hydraulic system; A one-way valve (V3), the one-way valve (V3) being arranged in the oil circuit and used for isolating the oil pump outlet pressure and the accumulator pressure; The second solenoid directional valve (V4) has an oil inlet P, an oil return port T and a working oil port A. The valve is used to release the pressure of the accumulator pressure pipeline after the system stops working; A proportional directional valve (V5), wherein the proportional directional valve (V5) is provided with an oil inlet P, an oil return port T, a working oil port A and a working oil port B, and the oil inlet P of the proportional directional valve (V5) is connected to hydraulic oil; An auxiliary unit, the auxiliary unit comprising an accumulator and a hydraulic sensor (B1) and a hydraulic sensor (B2), the hydraulic sensor (B1) and the hydraulic sensor (B2) being used to monitor the charging pressure, the minimum working pressure, the maximum working pressure and the supplementary pressure of the accumulator; An execution unit comprises an oil cylinder (A1), wherein the oil cylinder (A1) is connected to a working oil port A and a working oil port B of the proportional directional valve (V5), and a telescopic action is realized through the control of the proportional directional valve (V5) for clamping work.

2. The adaptive variable cycle hydraulic power system according to claim 1, characterized in that: The motor (M1) is a servo motor, which can adjust the rotation speed of the oil pump (P) according to system requirements, thereby adjusting the output flow of the hydraulic oil.

3. The adaptive variable cycle hydraulic power system according to claim 1, characterized in that: The first electromagnetic directional valve (V1) is an electromagnetic reversing valve, which detects the current accumulator pressure through the sensor B1, and transmits an electrical signal -Y102 to control the state of the electromagnetic reversing valve after judging the conditions.

4. The adaptive variable cycle hydraulic power system according to claim 1, characterized in that: The set pressure value of the relief valve (V2) can be manually adjusted according to actual working requirements.

5. The adaptive variable cycle hydraulic power system according to claim 1, characterized in that: The one-way valve (V3) ensures that the oil flows in one direction under specific pressure conditions.

6. The adaptive variable cycle hydraulic power system according to claim 1, characterized in that: The second electromagnetic directional valve (V4) is switched by a control signal -Y103, and the second electromagnetic directional valve (V4) is used for depressurizing the energy storage device when it is shut down.

7. The adaptive variable cycle hydraulic power system according to claim 1, characterized in that: The proportional directional valve (V5) is proportionally controlled by the control signal -Y201, and can accurately adjust the output flow according to the size of the input analog signal, thereby controlling the movement speed of the cylinder (A1).

8. The adaptive variable cycle hydraulic power system according to claim 1, characterized in that: The hydraulic sensor (B1) is used to monitor the minimum working pressure (P1), the maximum working pressure (P2), and the supplementary pressure (Pc) of the accumulator, and the hydraulic sensor (B2) is used to monitor the air bag pressure (P0) of the accumulator.

9. The adaptive variable cycle hydraulic power system according to claim 1, characterized in that: It also includes an oil pipeline and a joint. The oil pipeline adopts a high-pressure oil-resistant rubber tube, and the joint is a quick joint, which is easy to install and disassemble.

10. An adaptive variable cycle hydraulic power device, characterized in that: It includes the adaptive variable cycle hydraulic power system as described in claims 1-9.

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