Control system and method for storing energy and releasing high-flow pressure oil

Abstract

The invention relates to the field of hydraulic systems, in particular to a control system and method for storing energy and releasing high-flow pressure oil. Comprising a power source unit, a pressure oil control unit, an energy storage control unit, an energy release control unit, an execution unit, a first oil way, a system oil way, an energy storage oil way, an execution oil way and an energy accumulator. The power source unit is connected with the energy accumulator through a first oil way, a system oil way and an energy storage oil way, and a pressure oil control unit, an energy storage control unit, an energy release control unit and an execution unit which are used for controlling the flow direction of pressure oil are correspondingly arranged on the first oil way, the energy storage oil way, the energy release oil way and the execution oil way. And the power source unit, the pressure oil control unit, the energy storage control unit, the energy release control unit and the execution unit are controlled. The purpose of controlling storage and release of pressure oil can be achieved, and the requirement for providing high-flow pressure oil for an execution unit is met.

Description

Technical Field

[0001] The present invention relates to the field of hydraulic systems, and in particular to a control system and method for storing and releasing large-flow pressure oil. Background Art

[0002] Due to the rapid development of industrial machinery, accumulators are also widely used in hydraulic systems. In order to adapt to different working conditions, the control of accumulators has also become crucial. Some accumulator applications are only suitable for hydraulic systems with small flows and are not suitable for large flow scenarios. Ordinary accumulators are directly connected in parallel to the system. The accumulator is directly connected to the system oil circuit. There is no valve group to control the storage and release of the accumulator, which cannot meet the needs of large flows; and some hydraulic systems with accumulators have two independent oil circuits for energy storage and release, resulting in more pipeline layouts in the hydraulic system.

[0003] Therefore, in response to the defects of the above-mentioned technology, the present invention proposes a control system and method for storing and releasing large-flow pressure oil, which can not only achieve the purpose of controlling the storage and release of pressure oil and provide large-flow pressure oil to the actuator, but also reduce the pipeline layout, thereby reducing production costs. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a control system and method for storing and releasing large-flow pressure oil.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A control system for storing and releasing high-flow pressure oil, comprising a hydraulic transmission system: the hydraulic transmission system comprises a power source unit, a pressure oil control unit, an energy storage control unit, an energy release control unit, an execution unit, a first oil circuit, a system oil circuit, an energy storage oil circuit, an execution oil circuit and an accumulator; The power source unit is connected to the accumulator via the first oil circuit, the system oil circuit, the energy storage oil circuit and the accumulator to provide pressure oil for the accumulator. The first oil circuit, the energy storage oil circuit, the energy release oil circuit and the execution oil circuit are respectively provided with a pressure oil control unit, an energy storage control unit, an energy release control unit and an execution unit for controlling the flow direction of the pressure oil. The pressure oil control unit, the energy storage control unit, the energy release control unit and the execution unit are all provided with an electromagnetic reversing valve and a valve core; wherein the energy storage control unit and the energy release control unit share the energy storage oil circuit; It also includes a controller, which controls the power source unit, the pressure oil control unit, the energy storage control unit, the energy release control unit and the execution unit.

[0006] Furthermore, the power source unit includes a motor, an oil pump group and an oil tank, the output shaft of the motor is connected to the oil pump group, and the inlet of the oil pump group is connected to the oil tank to provide power for the entire hydraulic transmission system; The pressure oil control unit is connected by the first oil circuit, and includes an electromagnetic reversing valve 1 and a valve core 1. The inlet of the valve core 1 is connected to the outlet of the oil pump group, and the outlet of the valve core 1 is connected to the T port of the electromagnetic reversing valve 1; the valve core 1 is controlled by the electromagnetic reversing valve 1; A valve core 2 is connected between the first oil circuit and the system oil circuit; the system oil circuit is connected to the energy storage oil circuit. The energy storage control unit is connected by an energy storage oil circuit, and includes a second electromagnetic reversing valve, a third valve core, and a fourth valve core. The second electromagnetic reversing valve and the energy accumulator are connected to the third valve core and the fourth valve core in sequence, and the third valve core is controlled by the second electromagnetic reversing valve; The energy release control unit is connected by an energy storage oil circuit, and includes an electromagnetic reversing valve 3, a valve core 3, and a valve core 4. The accumulator is connected to the valve core 4. An electromagnetic reversing valve 3 is connected between the valve core 4 and the accumulator. The valve core 4 is controlled by the electromagnetic reversing valve 3. The execution unit is connected by an execution oil circuit, and the execution oil circuit is connected to the system oil circuit, including an electromagnetic reversing valve four, a valve core five and a valve core six. The electromagnetic reversing valve four is connected to the valve core five, and the valve core five is connected to the valve core six. The valve core five is controlled by the electromagnetic reversing valve four.

[0007] Furthermore, a pressure sensor 1 is connected to the system oil circuit, and the pressure sensor 1 is connected to an external display screen.

[0008] Furthermore, a safety overflow valve 1 is connected between the valve core 1 and the electromagnetic reversing valve, and an outlet of the safety overflow valve 1 is connected to the oil tank.

[0009] Furthermore, a pressure sensor 2 is connected between the accumulator and the electromagnetic reversing valve 3, and the pressure sensor 2 is connected to a controller.

[0010] Furthermore, a second safety relief valve is connected between the second pressure sensor and the accumulator, and an outlet of the second safety relief valve is connected to the oil tank.

[0011] Furthermore, a pressure relief valve is connected between the accumulator and the electromagnetic reversing valve, and an outlet of the pressure relief valve is connected to an oil tank.

[0012] Furthermore, an adjusting rod is also provided at the tail of the valve core 4 for adjusting the flow rate of the pressure oil.

[0013] Furthermore, a control method, including the above-mentioned control system for storing energy and releasing high-flow pressure oil, comprises the following steps: Step 1: The motor drives the oil pump group to start, and the pressure oil enters the pressure oil control unit through the first oil circuit; Step 2: The controller controls the electromagnetic reversing valve to be energized and the valve core to be locked, thereby establishing a stable system pressure; Step 3: The pressure oil flows into the system oil circuit and enters the actuator through the actuator oil circuit.

[0014] Furthermore, the step three also includes: Step 31: The controller controls the electromagnetic reversing valve 2 to lose power, controls the electromagnetic reversing valve 4 to gain power, and the pressure oil flows into the system oil circuit, flows to the execution oil circuit, and then enters the execution element; Step 32: the controller controls the electromagnetic reversing valve 2 to be energized, and the pressure oil enters the accumulator through the valve core 3 and the valve core 4 to store energy. After the pressure sensor 2 detects that the pressure reaches the set value, the controller controls the electromagnetic reversing valve 2 to lose power, and the pressure oil will no longer flow into the accumulator, and the energy storage is completed; the controller controls the electromagnetic reversing valve 3 and the electromagnetic reversing valve 4 to be energized, and the pressure oil in the accumulator flows into the system oil circuit, flows to the execution oil circuit, and then enters the execution element; Step 33: The controller controls the electromagnetic reversing valve 1, the electromagnetic reversing valve 3 and the electromagnetic reversing valve 4 to be energized, and the pressure oil in the accumulator and the oil tank flows into the system oil circuit, flows to the execution oil circuit, and then enters the execution element; The step 32 also includes: When the pressure in the accumulator is too high, it can be released through the pressure relief valve; When the actuator requires less pressure oil, the flow rate of the pressure oil is adjusted by the adjusting rod on the valve core four.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The accumulator stores energy and releases pressure oil by using an electromagnetic reversing valve to control the opening and closing of the valve core; 2. The energy storage oil circuit and the energy release oil circuit are the same oil circuit, which reduces the layout of the pipeline; 3. The accumulator can store pressure oil to meet the large flow requirements of the actuator; 4. There are three oil supply modes: accumulator oil supply alone, oil pump group oil supply alone, accumulator and oil pump group oil supply together to meet the diverse needs of actuators. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is the hydraulic control principle diagram of the present invention; DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Embodiment 1, as Figure 1 As shown, a control system for storing and releasing large-flow pressure oil is characterized in that it includes a hydraulic transmission system: the hydraulic transmission system includes a power source unit 1, a pressure oil control unit, an energy storage control unit, an energy release control unit, an execution unit, a first oil circuit, a system oil circuit, an energy storage oil circuit, an execution oil circuit and an accumulator 4; The power source unit 1 is connected to the accumulator 4 via the first oil circuit, the system oil circuit, the energy storage oil circuit, and the energy accumulator 4 to provide pressure oil for the accumulator 4. The first oil circuit, the energy storage oil circuit, the energy release oil circuit, and the execution oil circuit are correspondingly provided with a pressure oil control unit, an energy storage control unit, an energy release control unit, and an execution unit for controlling the flow direction of the pressure oil. The pressure oil control unit, the energy storage control unit, the energy release control unit, and the execution unit are all provided with an electromagnetic reversing valve and a valve core; wherein the energy storage control unit and the energy release control unit share the energy storage oil circuit; It also includes a controller, which controls the power source unit 1, the pressure oil control unit, the energy storage control unit, the energy release control unit and the execution unit.

[0018] Through this control system, the pressure oil in the oil tank is stored in the accumulator 4 through the power source unit 1 through the first oil circuit, the system oil circuit, and the energy storage oil circuit. When the actuator needs a large flow of pressure oil, the pressure oil in the accumulator 4 can be quickly released for the actuator to work.

[0019] In embodiment 2, the power source unit 1 includes a motor, an oil pump group and an oil tank. The output shaft of the motor is connected to the oil pump group, and the inlet of the oil pump group is connected to the oil tank. The power source unit 1 provides power for the entire hydraulic transmission system; the output shaft of the motor drives the oil pump group to work, outputs the oil in the oil tank, and flows into the accumulator 4 for energy storage.

[0020] The pressure oil control unit is connected by the first oil circuit, and includes an electromagnetic reversing valve 21 and a valve core 31. The inlet of the valve core 31 is connected to the outlet of the oil pump group, and the outlet of the valve core 31 is connected to the T port of the electromagnetic reversing valve 21; the tail of the valve core 31 is connected to the P port of the electromagnetic reversing valve 21, and the valve core 31 is controlled by the electromagnetic reversing valve 21.

[0021] The electromagnetic reversing valve 21 can control the on and off of the pressure oil in the power source unit 1. It is normally energized. When the oil pump group provides pressure oil, the pressure oil enters the pressure oil control unit. Since the electromagnetic reversing valve 21 is in the normal position, the P port, A port, and T port of the electromagnetic reversing valve 21 are connected, and the T port is the return oil port. Therefore, the control oil at the tail of the valve core 31 returns to the oil tank. At this time, the valve core 31 is affected by the pressure oil to overcome the spring force at the tail of the valve core 31, and the pressure oil is unloaded through the valve core 31 and returns to the oil tank.

[0022] When the electromagnetic reversing valve 1 21 is energized, the P port and the B port of the electromagnetic valve are connected, and the B port is blocked, so the pressure oil at the tail of the valve core 1 31 cannot be released, the valve core 1 31 is locked, and no pressure is released, and a stable system pressure is established. The system pressure is determined by the load (the system pressure can reach 31MPa). The pressure oil enters the system oil circuit through the valve core 2 32 or waits for the accumulator 4 to store energy. Therefore, the electromagnetic reversing valve 1 21 can establish a stable pressure after being energized.

[0023] A safety relief valve 61 is connected between the valve core 31 and the electromagnetic reversing valve 21, and the outlet of the safety relief valve 61 is connected to the oil tank.

[0024] When the system is working normally, the safety relief valve 61 is closed. Only when the load exceeds the specified limit (the system pressure exceeds the set pressure) will the overflow be opened for overload protection, so that excessive pressure oil flows into the oil tank and the system pressure no longer increases (usually the set pressure of the relief valve is 10% to 20% higher than the maximum working pressure of the system). The safety relief valve 61 plays a role in safety protection.

[0025] A second valve core 32 is connected between the first oil circuit and the system oil circuit; the system oil circuit is connected to the energy storage oil circuit; the second valve core 32 is used to cut off the pressure oil of the system oil circuit and prevent the pressure oil in the accumulator 4 from entering the oil pump and causing damage to the oil pump.

[0026] The system oil circuit is connected with a pressure sensor 51, which is connected to an external display screen. The pressure sensor 51 can monitor the size of the pressure oil in the system oil circuit, and the externally connected display screen can directly read the data.

[0027] The energy storage control unit is connected by an energy storage oil circuit, including an electromagnetic reversing valve 22, a valve core 33, and a valve core 4 34. The electromagnetic reversing valve 22, the valve core 33, and the valve core 4 34 are connected in sequence between the electromagnetic reversing valve 22 and the accumulator 4. The electromagnetic reversing valve 22 controls the opening and closing of the valve core 33.

[0028] In this embodiment, the electromagnetic reversing valve 22 is the accumulator valve of the accumulator 4 , which can control the opening and closing of the valve core 3 33 , and finally control whether the pressure oil in the system oil circuit flows into the accumulator 4 .

[0029] Under normal circumstances, the electromagnetic reversing valve 22 shall not be energized, and the pressure oil will flow back to the oil tank through the valve core 1 31 on the first oil circuit. When the electromagnetic reversing valve 22 is energized, the A port and T port of the electromagnetic valve are connected, and the control oil at the tail end of the valve core 33 returns to the oil tank, and the pressure oil overcomes the spring force at the tail end of the valve core 33. Because the pressure of the pressure oil is large enough, it can overcome the spring force at the tail end of the valve core 4 34, so the valve core 33 and the valve core 4 34 are opened, and the pressure oil enters the accumulator 4 through the valve core 33 and the valve core 4 34 for energy storage.

[0030] A pressure sensor 2 52 is connected between the accumulator 4 and the electromagnetic reversing valve 3 23 , and the pressure sensor 2 52 is connected to the controller.

[0031] When the pressure of the pressure sensor 2 52 reaches the set value, the pressure sensor 2 52 will send a signal to the controller, and the controller controls the electromagnetic reversing valve 2 22 to lose power, the electromagnetic valve port P and port A of the electromagnetic reversing valve 2 22 are connected, and the pressure oil flows into the tail end of the valve core 3 33 through the port A, and the valve core 3 33 is reset, and the pressure oil will no longer flow into the accumulator 4, and the energy storage is completed. When storing energy, if the flow rate of the pressure oil needs to be adjusted, the flow rate of the pressure oil can be changed by adjusting the speed of the motor.

[0032] A safety relief valve 62 is connected between the pressure sensor 52 and the accumulator 4, and the outlet of the safety relief valve 62 is connected to the oil tank.

[0033] When the pressure in the accumulator 4 is too high, the safety relief valve 2 62 will automatically open the valve for overload protection.

[0034] The energy release control unit is connected by the energy storage oil circuit, including the electromagnetic reversing valve three 23, the valve core three 33, and the valve core four 34. The accumulator 4 is connected to the valve core four 34. The electromagnetic reversing valve three 23 is connected between the valve core four 34 and the accumulator 4. The electromagnetic reversing valve three 23 controls the opening and closing of the valve core four 34. The energy release oil circuit and energy storage oil circuit in the energy release control unit are the same oil circuit. When the electromagnetic reversing valve 3 23 is energized, the T port and the A port in the electromagnetic valve are connected, and the control oil at the tail end of the valve core 4 34 returns to the oil tank. The pressure oil in the accumulator 4 passes through the energy storage oil circuit, overcomes the spring force of the valve core 3 33 and the valve core 4 34, opens the valve core 3 33 and the valve core 4 34, and the large flow of pressure oil in the accumulator 4 is merged into the system oil circuit, and the energy release is completed.

[0035] The execution unit is connected by an execution oil circuit, which is connected to the system oil circuit, and includes an electromagnetic reversing valve four 24, a valve core five 35 and a valve core six 36. The electromagnetic reversing valve four 24 is connected to the valve core five 35, and the valve core five 35 is connected to the valve core six 36. The valve core five 35 is controlled by the electromagnetic reversing valve four 24.

[0036] In this embodiment, when the electromagnetic reversing valve four 24 is energized, the T port and the A port in the electromagnetic reversing valve four 24 are connected, the control oil at the tail end of the valve core five 35 returns to the oil tank, and the pressure oil in the system oil circuit and the pressure oil released by the accumulator 4 overcome the spring force at the tail ends of the valve core five 35 and the valve core six 36, and enter the actuator unit, so that the actuator can achieve the purpose of rapid action.

[0037] In this embodiment, the valve core 6 36 is used to block the pressure oil of the actuator from entering the system oil circuit.

[0038] An adjusting rod 8 is also provided at the tail of the valve core 434 for adjusting the flow rate of the pressure oil.

[0039] A pressure relief valve 7 is connected between the accumulator 4 and the electromagnetic reversing valve 3 23, and an outlet of the pressure relief valve 7 is connected to the oil tank.

[0040] In this embodiment, the pressure relief valve 7 may be a manual pressure relief valve or an electric pressure relief valve, which can release the pressure oil in the accumulator 4 during power outage or maintenance.

[0041] Embodiment 3, a control method, including the above-mentioned control system for storing energy and releasing high-flow pressure oil, comprises the following steps: Step 1: The motor oil pump group is started, and the pressure oil enters the pressure oil control unit through the first oil circuit; Step 2: The controller controls the electromagnetic reversing valve 21 to be energized, and the valve core 31 is locked to establish a stable system pressure; In this embodiment, the system pressure is determined by the actuator. The pressure oil enters the system oil circuit through the valve core 2 32 and waits for the next action; Step 3: The pressure oil flows into the system oil circuit and enters the actuator through the execution oil circuit.

[0042] In Example 4, the actuator is a cylinder, and there are three different control methods to supply oil to the cylinder: The first one is that the power source unit 1 supplies oil separately. When the pressure oil flows into the system oil circuit, the solenoid reversing valve 22 is in the normal position, the P port and the A port in the solenoid reversing valve 22 are connected, and the valve core 33 is controlled to be locked. At the same time, the controller controls the solenoid reversing valve 4 24 to be energized, and the A port and the T port in the solenoid reversing valve 4 24 are connected. The pressure oil in the system oil circuit can only flow through the execution oil circuit, and then enter the oil cylinder from the execution oil circuit.

[0043] The second method is that the accumulator 4 supplies oil to the oil cylinder alone. When the pressure oil flows into the system oil circuit, the controller controls the electromagnetic reversing valve 22 to be energized, and the pressure oil enters the accumulator 4 through the valve core 33 and the valve core 4 34 for energy storage. After the pressure sensor 2 52 detects that the pressure reaches the set value, the pressure sensor will send a signal to the controller, and the electromagnetic reversing valve 22 will lose power, and the pressure oil will no longer flow into the accumulator 4, and the energy storage is completed; When energy needs to be released to supply oil to the cylinder, the controller controls the electromagnetic reversing valve three 23 to be energized, and the tail of the valve core four 34 releases the pressure oil. At the same time, the controller controls the electromagnetic reversing valve four 24 to be energized, and the A port and T port of the electromagnetic reversing valve four 24 are connected, and the pressure oil flows into the system oil circuit. Because the valve core two 32 is used to isolate the pressure oil of the system oil circuit from flowing into the oil tank, the pressure oil can only flow into the execution oil circuit and then into the cylinder.

[0044] The third type is that the power source unit 1 and the accumulator 4 supply oil to the cylinder together, the controller controls the electromagnetic reversing valve 1 21 to be energized, the electromagnetic reversing valve 3 23 to be energized and the electromagnetic reversing valve 4 24 to be energized, and the pressure oil in the accumulator 4 and the oil tank is merged into the system oil circuit. Because the pressure in the execution oil circuit is small, the pressure oil in the system oil circuit can only flow to the execution oil circuit and then enter the cylinder.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A control system for storing and releasing large flow pressure oil, characterized in that: Comprising a hydraulic transmission system: the hydraulic transmission system comprises a power source unit (1), a pressure oil control unit, an energy storage control unit, an energy release control unit, an execution unit, a first oil circuit, a system oil circuit, an energy storage oil circuit, an execution oil circuit and an accumulator (4); The power source unit (1) is connected via a first oil circuit, a system oil circuit, an energy storage oil circuit and an accumulator (4), and provides pressure oil for the accumulator (4); a pressure oil control unit, an energy storage control unit, an energy release control unit and an execution unit are respectively provided on the first oil circuit, the energy storage oil circuit, the energy release oil circuit and the execution oil circuit for controlling the flow direction of the pressure oil; the pressure oil control unit, the energy storage control unit, the energy release control unit and the execution unit are all provided with an electromagnetic reversing valve and a valve core; wherein the energy storage control unit and the energy release control unit share the energy storage oil circuit; It also includes a controller, which controls the power source unit (1), the pressure oil control unit, the energy storage control unit, the energy release control unit and the execution unit.

2. A control system for storing energy and releasing high-flow pressure oil according to claim 1, characterized in that: The power source unit (1) comprises a motor, an oil pump group and an oil tank, the output shaft of the motor is connected to the oil pump group, the inlet of the oil pump group is connected to the oil tank, and the power source unit (1) provides power for the entire hydraulic transmission system; The pressure oil control unit is connected by a first oil circuit, and comprises an electromagnetic reversing valve 1 (21) and a valve core 1 (31), wherein the inlet of the valve core 1 (31) is connected to the outlet of the oil pump group, and the outlet of the valve core 1 (31) is connected to the T port of the electromagnetic reversing valve 1 (21), and the valve core 1 (31) is controlled by the electromagnetic reversing valve 1 (21); A valve core 2 (32) is connected between the first oil circuit and the system oil circuit; the system oil circuit is connected to the energy storage oil circuit; The energy storage control unit is connected by an energy storage oil circuit, and comprises a second electromagnetic reversing valve (22), a third valve core (33), and a fourth valve core (34). The second electromagnetic reversing valve (22) and the energy accumulator (4) are connected to the third valve core (33) and the fourth valve core (34) in sequence, and the third valve core (33) is controlled by the second electromagnetic reversing valve (22); The energy release control unit is connected by an energy storage oil circuit, and comprises an electromagnetic reversing valve three (23), a valve core three (33), and a valve core four (34); the energy accumulator (4) is connected to the valve core four (34); an electromagnetic reversing valve three (23) is connected between the valve core four (34) and the energy accumulator (4); and the valve core four (34) is controlled by the electromagnetic reversing valve three (23); The execution unit is connected by an execution oil circuit, the execution oil circuit is connected to the system oil circuit, and includes an electromagnetic reversing valve four (24), a valve core five (35) and a valve core six (36). The electromagnetic reversing valve four (24) is connected to the valve core five (35), the valve core five (35) is connected to the valve core six (36), and the valve core five (35) is controlled by the electromagnetic reversing valve four (24).

3. A control system for storing energy and releasing large flow pressure oil according to claim 2, characterized in that: A pressure sensor 1 (51) is connected to the system oil circuit, and the pressure sensor 1 (51) is connected to an external display screen.

4. A control system for storing energy and releasing large flow pressure oil according to claim 2, characterized in that: A safety overflow valve (61) is connected between the valve core (31) and the electromagnetic reversing valve (21), and an outlet of the safety overflow valve (61) is connected to the oil tank.

5. A control system for storing energy and releasing high-flow pressure oil according to claim 1, characterized in that: A second pressure sensor (52) is connected between the accumulator (4) and the third electromagnetic reversing valve (23), and the second pressure sensor (52) is connected to the controller.

6. A control system for storing energy and releasing high-flow pressure oil according to claim 5, characterized in that: A second safety relief valve (62) is connected between the second pressure sensor (52) and the accumulator (4), and an outlet of the second safety relief valve (62) is connected to the oil tank.

7. A control system for storing energy and releasing high-flow pressure oil according to claim 1, characterized in that: A pressure relief valve (7) is connected between the accumulator (4) and the electromagnetic reversing valve three (23), and an outlet of the pressure relief valve (7) is connected to the oil tank.

8. A control system for storing energy and releasing high-flow pressure oil according to claim 2, characterized in that: The valve core 4 (34) is also provided with an adjusting rod (8) for adjusting the flow rate of the pressure oil.

9. A control method, comprising a control system for storing energy and releasing high-flow pressure oil as described in claims 1 to 7, characterized in that: The following steps are involved: Step 1: The motor drives the oil pump group to start, and the pressure oil enters the pressure oil control unit through the first oil circuit; Step 2: The controller controls the electromagnetic reversing valve 1 (21) to be energized, and the valve core 1 (31) is locked to establish a stable system pressure; Step 3: The pressure oil flows into the system oil circuit and enters the actuator through the actuator oil circuit.

10. A control method according to claim 9, wherein the step 3 further comprises: Step 31: The controller controls the electromagnetic reversing valve 2 (22) to lose power, and controls the electromagnetic reversing valve 4 (24) to gain power, so that the pressure oil flows into the system oil circuit, flows to the execution oil circuit, and then enters the execution element; Step 32: the controller controls the electromagnetic reversing valve 2 (22) to be energized, and the pressure oil enters the accumulator (4) through the valve core 3 (33) and the valve core 4 (34) to store energy. After the pressure sensor 2 (52) detects that the pressure reaches the set value, the controller controls the electromagnetic reversing valve 2 (22) to lose power, and the pressure oil no longer flows into the accumulator (4), and the energy storage is completed; the controller controls the electromagnetic reversing valve 3 (23) and the electromagnetic reversing valve 4 (24) to be energized, and the pressure oil in the accumulator (4) flows into the system oil circuit, flows to the execution oil circuit, and then enters the execution element; Step 33: The controller controls the electromagnetic reversing valve 1 (21), the electromagnetic reversing valve 3 (23) and the electromagnetic reversing valve 4 (24) to be energized, and the pressure oil in the accumulator (4) and the oil tank flows into the system oil circuit, flows to the execution oil circuit, and then enters the execution element; The step 32 also includes: When the pressure in the accumulator (4) is too high, the pressure can be released through the pressure relief valve (7); When releasing energy, when the actuator requires less pressure oil, the flow rate of the pressure oil is adjusted by the adjustment rod (8) on the valve core four (34).

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