Closed-loop control hydraulic system, crimping system, control method, equipment and medium

Abstract

The present application relates to a closed-loop control hydraulic system, a crimping system, a control method, a device and a medium. The method includes: a servo motor, a pressure sensor and a control system, wherein the pressure sensor is arranged on the oil circuit of the closed-loop control hydraulic system. The above-mentioned closed-loop control hydraulic system can adopt a closed-loop control method, and the current pressure signal applied to the crimping machine by the closed-loop control hydraulic system is collected in real time through the internally arranged pressure sensor, and the pressure applied to the crimping machine by the hydraulic system is dynamically and flexibly adjusted according to the working characteristics of the closed-loop control hydraulic system and the current pressure signal, so that the crimping machine is in a target crimping state, thereby improving the crimping quality of the crimping machine.

Description

Technical Field

[0001] The present application relates to the field of security technology, and in particular to a closed-loop control hydraulic system, a crimping system, a control method, a device and a medium. Background Art

[0002] With the development of power electronics technology, the quality requirements for power lines are getting higher and higher. Among them, the quality of power lines will affect the controllability and reliability of power transmission in the power grid system, thereby affecting the normal and safe operation of the power system.

[0003] In the related art, the crimping machine is mainly controlled by manually operating the execution system in the hydraulic system to tightly connect the power line with the terminal blocks, connectors, etc., so as to ensure the controllability and reliability of power transmission in the power grid system.

[0004] However, in the related art, the crimping machine may have a problem of poor crimping quality during the crimping process. Summary of the invention

[0005] Based on this, it is necessary to provide a closed-loop control hydraulic system, crimping system, control method, equipment and medium to address the above technical problems, and to control the pressure applied to the hydraulic press through the closed-loop control hydraulic system to improve the crimping quality of the crimping machine.

[0006] In a first aspect, an embodiment of the present application provides a closed-loop control hydraulic system, the closed-loop control hydraulic system comprising: a servo motor, a pressure sensor and a control system, the pressure sensor being arranged on an oil circuit of the closed-loop control hydraulic system;

[0007] A pressure sensor is used to collect the current pressure signal applied to the crimping machine by the closed-loop control hydraulic system;

[0008] A control system, used for generating an adjustment electric signal for the servo motor according to the working characteristics of the closed-loop control hydraulic system and the current pressure signal, and sending the adjustment electric signal to the servo motor;

[0009] The servo motor is used to respond to the adjustment electric signal and adjust the pressure signal applied to the crimping machine by the closed-loop control hydraulic system to control the crimping machine to be in a target crimping state.

[0010] In one of the embodiments, the closed-loop control hydraulic system further comprises: a double pump;

[0011] The servo motor is specifically used to respond to the adjustment electrical signal, adjust the rotation speed of the double pump to control the flow of hydraulic oil in the double pump, so as to adjust the pressure signal applied to the crimping machine by the closed-loop control hydraulic system.

[0012] In one embodiment, the double pump includes a hydraulic pump; the closed-loop control hydraulic system also includes an integrated valve group, the integrated valve group includes an internal pipeline, a relief valve and a reversing valve;

[0013] The servo motor is also used to drive the hydraulic pump, adjust the volume of the oil suction chamber in the hydraulic pump, and control the output of hydraulic oil in the pump body of the hydraulic pump through the oil suction chamber;

[0014] The control system is also used to control the flow direction, pressure and flow of the hydraulic oil according to the internal pipeline, relief valve and reversing valve to adjust the pressure signal of the closed-loop control hydraulic system.

[0015] In one of the embodiments, the integrated valve group further includes a low-pressure relief valve and an unloading valve;

[0016] The control system is also used to control the low-pressure relief valve to adjust the pressure signal of the closed-loop control hydraulic system to be within a preset pressure signal range; and to control the unloading valve to reduce the pressure of the closed-loop control hydraulic system.

[0017] In one of the embodiments, the closed-loop control hydraulic system further comprises: an oil tank, an oil gauge, and a pressure measuring joint;

[0018] An oil tank is used to store hydraulic oil for suction by the pump body of the hydraulic pump in the duplex pump, and to store hydraulic oil flowing back from the closed-loop control hydraulic system;

[0019] Oil mark, used to show the level of hydraulic oil in the tank;

[0020] The pressure measuring joint is connected to the pressure sensor, and when the pressure sensor measures the pressure of a corresponding point in the hydraulic system, the pressure measuring joint is connected to a corresponding pipeline in the closed-loop control hydraulic system.

[0021] In a second aspect, an embodiment of the present application provides a crimping system, which includes: a closed-loop controlled hydraulic system and a crimping machine provided in any embodiment of the first aspect; the closed-loop controlled hydraulic system is connected to the crimping machine.

[0022] In a third aspect, an embodiment of the present application provides a control method for a crimping machine, which is applied to a control system in a closed-loop control hydraulic system, and the method includes:

[0023] Obtain the current pressure signal of the closed-loop control hydraulic system;

[0024] Generate an adjustment electrical signal for a servo motor in a closed-loop control hydraulic system according to the working characteristics of the closed-loop control hydraulic system and a current pressure signal;

[0025] An adjustment electrical signal is sent to the servo motor to instruct the servo motor to respond to the adjustment electrical signal and adjust the pressure signal applied to the crimping machine by the closed-loop control hydraulic system to control the crimping machine to be in a target crimping state.

[0026] In a fourth aspect, an embodiment of the present application provides a control device for a crimping machine, the device comprising:

[0027] An acquisition module, used for acquiring a current pressure signal of a closed-loop control hydraulic system;

[0028] A signal generating module, used for generating an adjustment electric signal of the servo motor according to the working characteristics of the closed-loop control hydraulic system and the current pressure signal;

[0029] The sending module is used to send an adjustment electrical signal to the servo motor, instructing the servo motor to respond to the adjustment electrical signal and adjust the pressure signal applied to the crimping machine by the closed-loop control hydraulic system to control the crimping machine to be in a target crimping state.

[0030] In a fifth aspect, an embodiment of the present application further provides a computer device, the computer device comprising a memory and a control system, the memory storing a computer program, and the control system implementing the steps of the method of any embodiment in the third aspect when executing the computer program.

[0031] In a sixth aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a control system, the steps of the method of any embodiment in the third aspect above are implemented.

[0032] In a seventh aspect, an embodiment of the present application further provides a computer program product, the computer program product comprising a computer program, which, when executed by a control system, implements the steps of the method of any embodiment in the third aspect above.

[0033] The embodiments of the present application provide a closed-loop controlled hydraulic system, a crimping system, a control method, an equipment and a medium. The closed-loop controlled hydraulic system of the crimping machine includes a servo motor, a pressure sensor and a control system. The pressure sensor is arranged in the oil circuit of the closed-loop controlled hydraulic system. The pressure sensor is used to collect the current pressure signal applied to the crimping machine by the closed-loop controlled hydraulic system. The control system is used to generate an adjustment electric signal for the servo motor according to the working characteristics of the closed-loop controlled hydraulic system and the current pressure signal and send the adjustment electric signal to the servo motor. The servo motor is used to adjust the pressure signal applied to the crimping machine by the closed-loop controlled hydraulic system in response to the adjustment electric signal so as to control the crimping machine to be in a target crimping state. The above-mentioned closed-loop controlled hydraulic system can adopt a closed-loop control mode, and collect the current pressure signal applied to the crimping machine by the closed-loop controlled hydraulic system in real time through the internally arranged pressure sensor, and Control the working characteristics of the hydraulic system and the current pressure signal dynamically, and flexibly adjust the pressure applied to the crimping machine by the closed-loop control hydraulic system to put the crimping machine in the target crimping state, thereby improving the crimping quality of the crimping machine; at the same time, the above-mentioned closed-loop control hydraulic system controls the crimping machine to perform crimping operations without the need for manual participation of the user, thereby not only avoiding the phenomenon of pressure leakage and under-pressure of the crimping machine, improving the accuracy of the closed-loop control hydraulic system in controlling the crimping machine, but also improving the crimping efficiency of the crimping machine; in addition, the control system in the above-mentioned closed-loop control hydraulic system can flexibly adjust the speed of the servo motor to match different torques based on the working characteristics of the closed-loop control hydraulic system and the current pressure signal dynamics, so that the servo motor can perfectly fit the working characteristics of the closed-loop control hydraulic system, which can not only ensure the crimping efficiency of the crimping machine, but also reduce the energy consumption of the crimping machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 An internal structural diagram of an execution system in a closed-loop control hydraulic system in one embodiment;

[0035] Figure 2 A schematic diagram of the working principle of a partial component of a closed-loop control hydraulic system in one embodiment;

[0036] Figure 3 is a structural block diagram of a crimping system in one embodiment;

[0037] Figure 4 A schematic flow chart of a control method for a crimping machine in another embodiment;

[0038] Figure 5 is a structural block diagram of a control device of a crimping machine in one embodiment;

[0039] Figure 6 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment.

[0040] Description of reference numerals:

[0041] 10. Closed-loop control hydraulic system; 11. Servo motor;

[0042] 12. Pressure sensor; 13. Double pump;

[0043] 14. Integrated valve group; 141. Overflow valve;

[0044] 142. Directional valve; 143. Low-pressure relief valve;

[0045] 144. Unloading valve; 15. Fuel tank;

[0046] 16. Oil mark; 17. Pressure measuring joint. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] In the field of power electronics, the quality requirements for power lines are getting higher and higher. Among them, the quality of power lines will affect the controllability and reliability of power transmission in the power grid system, thereby affecting the normal and safe operation of the power system. In the related art, the execution system in the hydraulic system of the crimping machine is mainly controlled by manually operating the execution system to control the crimping machine to tightly connect the power lines with the wiring terminals, connectors, etc., so as to ensure the controllability and reliability of power transmission in the power grid system. However, in the process of crimping performed by the crimping machine in the related art, there is a problem of poor wire crimping quality. Based on this, an embodiment of the present application provides a hydraulic system, which controls the pressure applied to the hydraulic press by a closed-loop control hydraulic system to control and improve the wire crimping quality of the crimping machine.

[0049] The embodiment of the present application provides a closed-loop control hydraulic system 10, which includes: a servo motor 11, a pressure sensor 12 and a control system, wherein the pressure sensor 12 is arranged on the oil circuit of the closed-loop control hydraulic system 10; Figure 1 The figure shows the internal structure of the closed-loop control hydraulic system 10 except the control system (i.e. the execution system);

[0050] The pressure sensor 12 is used to collect the current pressure signal applied by the closed-loop control hydraulic system 10 to the crimping machine 20;

[0051] A control system, for generating an adjustment electric signal for the servo motor 11 according to the working characteristics of the closed-loop control hydraulic system 10 and the current pressure signal, and sending the adjustment electric signal to the servo motor 11;

[0052] The servo motor 11 is used to respond to the adjustment electric signal and adjust the pressure signal applied to the crimping machine 20 by the closed-loop control hydraulic system 10 to control the crimping machine 20 to be in a target crimping state.

[0053] In the embodiment of the present application, the other structures in the closed-loop control hydraulic system 10 of the crimping machine 20 except the control system are mainly responsible for converting hydraulic energy into mechanical energy so that the crimping machine 20 can perform the crimping task; the control system is the command center of the closed-loop control hydraulic system 10, which is mainly used to control the actions of other structures, including parameters such as pressure, speed, and direction, so as to ensure the accuracy, stability and safety of the crimping operation performed by the crimping machine 20.

[0054] Specifically, after the servo motor 11 receives the electrical signal sent by the control system, the control circuit inside the servo motor 11 can accurately adjust the current and magnetic field of the servo motor 11 according to the electrical signal, thereby driving the shaft of the servo motor 11 to rotate as required. Optionally, the electrical signal may include information such as the target position, speed or torque that the servo motor 11 needs to achieve.

[0055] Optionally, the pressure sensor 12 may be a strain gauge pressure sensor, a piezoresistive pressure sensor, a capacitive pressure sensor, a piezoelectric pressure sensor, etc. In practical applications, through the pressure sensor 12, the control system can monitor the pressure change of the closed-loop control hydraulic system 10 in real time, thereby accurately controlling other hydraulic components (such as the overflow valve, the servo motor 11, etc.) according to the pressure conditions.

[0056] In one implementation, the control system may pre-train an algorithm model, and then input the working characteristics of the closed-loop control hydraulic system 10 and the current pressure signal collected by the pressure sensor 12 into the algorithm model, and the algorithm model outputs the adjustment electrical signal of the servo motor 11. In another implementation, the control system may also search the working characteristics of the closed-loop control hydraulic system 10 and the current pressure signal collected by the pressure sensor 12 in a mapping relationship table, and determine the corresponding electrical signal in the mapping relationship table that matches the working characteristics of the closed-loop control hydraulic system 10 and the current pressure signal collected by the pressure sensor 12 as the adjustment electrical signal of the servo motor 11. The above-mentioned mapping relationship table may include the correspondence between different working characteristics of the closed-loop control hydraulic system 10, different pressure signals, and different electrical signals of the servo motor 11 in the closed-loop control hydraulic system 10.

[0057] In the embodiment of the present application, the working characteristics of the closed-loop control hydraulic system 10 may include pressure transmission characteristics, flow characteristics, power characteristics, load characteristics, etc. At the same time, the adjustment electric signal of the servo motor 11 may include information such as the position, speed or torque that the servo motor 11 needs to achieve; the adjustment electric signal may be the same as or different from the electric signal initially received by the servo motor 11.

[0058] It should be noted that the servo motor 11 can adjust its own position, speed or torque and other information after responding to the adjustment electrical signal, thereby adjusting the pressure signal applied to the crimping machine 20 by the closed-loop control hydraulic system 10 to control the crimping machine 20 to be in the target crimping state. The crimping machine 20 is in the target crimping state, indicating that the crimping machine 20 can achieve a higher crimping quality after performing the crimping operation on the crimping object.

[0059] In addition, in the embodiment of the present application, the control system can control and adjust the rotational speed of the servo motor 11 according to the working conditions of the crimping machine, so that the crimping machine 20 can not only be in the target crimping state, but also enable the closed-loop control hydraulic system 10 to achieve energy-saving effects, that is, when necessary, by controlling the servo motor 11 to be in a standby state or even automatically shutting down the servo motor 11 when it is not working for a long time.

[0060] In one embodiment, the closed-loop control hydraulic system 10 further includes: a double pump 13;

[0061] The servo motor 11 is specifically used to respond to the adjustment electrical signal, adjust the rotation speed of the double pump to control the flow of hydraulic oil in the double pump 13, so as to adjust the pressure signal applied by the closed-loop control hydraulic system 10 to the crimping machine 20.

[0062] Among them, the servo motor 11 in the closed-loop control hydraulic system 10 is used to drive the double pump 13. In practical applications, the double pump 13 in the closed-loop control hydraulic system 10 may include two pump bodies; the double pump 13 can provide two hydraulic oils of different pressures or flows simultaneously or separately. Among them, one pump in the double pump 13 can be used to provide high-pressure and high-flow hydraulic oil, which can quickly drive the actuator (such as a hydraulic cylinder, a hydraulic motor, etc.) to move; such as in the initial stage of crimping by the crimping machine 20, the hydraulic cylinder is quickly pushed to make the crimping die approach the workpiece (such as a power line and a terminal, etc.). In addition, another pump in the double pump 13 can be used to provide high-pressure and low-flow hydraulic oil, which is used in the final stage of crimping when the pressure needs to be precisely controlled to ensure the crimping quality.

[0063] According to the technical solution in the embodiment of the present application, the closed-loop control hydraulic system 10 of the crimping machine 20 includes a servo motor 11, a pressure sensor 12 and a control system. The pressure sensor 12 is arranged on the outer surface of the integrated valve group 14, wherein the pressure sensor 12 is used to collect the current pressure signal applied by the closed-loop control hydraulic system 10 to the crimping machine 20, and the control system is used to generate an adjustment electrical signal of the servo motor 11 according to the working characteristics of the closed-loop control hydraulic system 10 and the current pressure signal and send the adjustment electrical signal to the servo motor 11, and the servo motor 11 is used to adjust the pressure signal applied by the closed-loop control hydraulic system 10 to the crimping machine 20 in response to the adjustment electrical signal to control the crimping machine 20 to be in a target crimping state; the above-mentioned closed-loop control hydraulic system 10 can adopt a closed-loop control method, and the current pressure signal applied by the closed-loop control hydraulic system 10 to the crimping machine 20 is collected in real time by the internally arranged pressure sensor 12, and the pressure signal is adjusted according to the working characteristics of the closed-loop control hydraulic system 10. The closed-loop control hydraulic system 10 can dynamically and flexibly adjust the pressure applied to the crimping machine 20 by the closed-loop control hydraulic system 10 according to the working characteristics and the current pressure signal, so that the crimping machine 20 is in the target crimping state, thereby improving the crimping quality of the crimping machine 20; at the same time, in the process of the closed-loop control hydraulic system 10 controlling the crimping machine 20 to perform the crimping operation, there is no need for manual participation of the user, which can not only avoid the phenomenon of pressure leakage and under-pressure of the crimping machine, improve the accuracy of the closed-loop control hydraulic system 10 in controlling the crimping machine 20, but also improve the crimping efficiency of the crimping machine 20; in addition, the control system in the closed-loop control hydraulic system 10 can dynamically and flexibly adjust the speed of the servo motor 11 to match different torques according to the working characteristics of the closed-loop control hydraulic system 10 and the current pressure signal, so that the servo motor 11 can perfectly fit the working characteristics of the closed-loop control hydraulic system 10, which can not only ensure the crimping efficiency of the crimping machine 20, but also reduce the energy consumption of the crimping machine 20.

[0064] The internal structure of the integrated valve group 14 in the closed-loop control hydraulic system 10 is described below. Figure 1 As shown, the double pump 13 in the closed-loop control hydraulic system 10 includes a hydraulic pump, and the closed-loop control hydraulic system 10 also includes an integrated valve group 14, and the integrated valve group 14 includes an internal pipeline, a relief valve 141 and a reversing valve 142; wherein:

[0065] The servo motor 11 is also used to drive the hydraulic pump, adjust the volume of the oil suction chamber in the hydraulic pump, and control the output of the hydraulic oil in the pump body of the hydraulic pump through the oil suction chamber;

[0066] The control system is also used to control the flow direction, pressure and flow rate of the hydraulic oil according to the internal pipeline, the relief valve 141 and the reversing valve 142 to adjust the pressure signal of the closed-loop control hydraulic system 10.

[0067] In the embodiment of the present application, the double pump 13 in the closed-loop control hydraulic system 10 may be a hydraulic pump composed of two pump bodies; the integrated valve group 14 may include an internal pipeline, a relief valve 141 and a reversing valve 142 .

[0068] Specifically, the hydraulic pump can be driven by a servo motor 11, and its internal gears, blades or plungers and other components rotate to increase the volume of the oil suction chamber, suck the hydraulic oil into the pump body under the action of atmospheric pressure, and then output the hydraulic oil at a certain pressure through the oil pressure chamber.

[0069] At the same time, in actual applications, the control system can also control the flow direction, pressure and flow of the hydraulic oil according to the internal pipeline, overflow valve 141 and reversing valve 142 in the hydraulic pump to adjust the pressure signal of the closed-loop control hydraulic system 10.

[0070] Specifically, the integrated valve group 14 in the closed-loop control hydraulic system 10 can be understood as a combination device in which multiple hydraulic valves (such as overflow valves, reversing valves, etc.) are integrated together. Among them, the overflow valve here can control the pressure of the closed-loop control hydraulic system 10; when the pressure of the closed-loop control hydraulic system 10 rises to the set pressure of the overflow valve, the valve core of the overflow valve will be pushed open, and the hydraulic oil will flow back to the oil tank 15 through the overflow port of the overflow valve. For example, during the operation of the crimping machine 20, if the pressure of the closed-loop control hydraulic system 10 exceeds the set value of the overflow valve due to a sudden increase in load, the control system can control the overflow valve to open and discharge the excess hydraulic oil back to the oil tank 15, thereby ensuring that the pressure of the closed-loop control hydraulic system 10 is not too high and protecting other components (such as pumps, valves and actuators) in the closed-loop control hydraulic system 10 from damage. At the same time, the control system can control the reversing valve to change the flow direction of the hydraulic oil in the closed-loop control hydraulic system 10.

[0071] In practical applications, the above-mentioned integrated valve group 14 can comprehensively control the flow direction, pressure and flow rate of the hydraulic oil through the internal channels and valve body structure. Taking the integrated valve group 14 including the reversing valve and the relief valve as an example, when the movement direction of the actuator (such as the hydraulic cylinder) needs to be changed, the control system can control the operation of the reversing valve to make the hydraulic oil flow into or out of the hydraulic cylinder in the required direction, thereby realizing the extension or retraction of the hydraulic cylinder. At the same time, when the pressure of the closed-loop control hydraulic system 10 is too high, the control system can control the relief valve to open and guide the excess hydraulic oil back to the oil tank 15 through the channel in the integrated valve group 14 to ensure the pressure stability of the closed-loop control hydraulic system 10.

[0072] According to the technical solution in the embodiment of the present application, the control system in the above-mentioned closed-loop control hydraulic system 10 can automatically control the integrated valve group 14 and indirectly control the hydraulic pump drive, so that during the crimping operation of the crimping machine 20, no manual intervention of the user is required, thereby not only avoiding the phenomenon of pressure leakage and under-pressure of the crimping machine, but also improving the accuracy of the closed-loop control hydraulic system 10 in controlling the crimping machine 20, and also improving the crimping efficiency of the crimping machine 20.

[0073] In one embodiment, please continue to see Figure 1 As shown, the above-mentioned integrated valve group 14 also includes a low-pressure relief valve 143 and a unloading valve 144; wherein, the control system is also used to control the low-pressure relief valve 143 to adjust the pressure signal of the closed-loop control hydraulic system 10 to be within a preset pressure signal range, and to control the unloading valve 144 to reduce the pressure of the closed-loop control hydraulic system 10.

[0074] It should be noted here that the integrated valve group 14 in the closed-loop control hydraulic system 10 may also include a low-pressure relief valve 143 and an unloading valve 144. Among them, the control system can control the low-pressure relief valve 143 to control the preload or cooling circuit of a specific hydraulic component in the closed-loop control hydraulic system 10, that is, the low-pressure relief valve 143 can control the pressure in the lower-pressure auxiliary circuit in the closed-loop control hydraulic system 10 within a lower safety range. For example, when the pressure of the auxiliary circuit exceeds the set value, the control system can control the opening of the low-pressure relief valve 143 to guide the excess hydraulic oil back to the oil tank 15 to prevent the pressure in the low-pressure auxiliary circuit from being too high.

[0075] At the same time, the control system can control the unloading valve 144 to reduce the pressure of the closed-loop control hydraulic system 10. Specifically, the unloading valve 144 is used to control the opening of the unloading valve 144 to directly guide the hydraulic oil output by the hydraulic pump back to the oil tank 15 when the closed-loop control hydraulic system 10 does not need pressure oil or needs to reduce the pressure of the closed-loop control hydraulic system 10.

[0076] Specifically, when the unloading valve 144 is opened, the output oil of the hydraulic pump can bypass other working circuits in the closed-loop control hydraulic system 10 and directly flow back to the oil tank 15, so that the hydraulic pump is in an unloading state. For example, when the crimping machine 20 is in a standby state or in an operation process that does not require pressure, the control system can control the unloading valve 144 to open, which can reduce the energy loss of the hydraulic pump, extend the service life of the hydraulic pump, and also avoid excessive pressure in the closed-loop control hydraulic system 10.

[0077] In one embodiment, please continue to see Figure 1 As shown, the closed-loop control hydraulic system 10 may further include: an oil tank 15, an oil gauge 16 and a pressure measuring joint 17;

[0078] The oil tank 15 is used to store hydraulic oil for suction by the pump body of the hydraulic pump in the double pump 13, and to store hydraulic oil flowing back from the closed-loop control hydraulic system 10;

[0079] An oil mark 16 is used to display the liquid level of the hydraulic oil in the oil tank 15;

[0080] The pressure measuring joint 17 is connected to the pressure sensor 12 , and when the pressure sensor 12 measures the pressure of a corresponding point in the closed-loop control hydraulic system 10 , the pressure measuring joint 17 is connected to a corresponding pipeline in the closed-loop control hydraulic system 10 .

[0081] In practical applications, the oil tank 15 is mainly used to store hydraulic oil, and also has functions such as heat dissipation, precipitation of impurities, and separation of air. When the hydraulic oil flows back to the oil tank 15 from the closed-loop control hydraulic system 10, the oil tank 15 can dissipate the heat absorbed during the working process to the surrounding environment, playing a role in cooling the hydraulic oil. At the same time, some heavier impurities in the hydraulic oil can be precipitated at the bottom of the oil tank 15, thereby preventing these impurities from entering the closed-loop control hydraulic system 10 again.

[0082] In addition, the surface of the hydraulic oil in the oil tank 15 contacts the air, which can allow the air mixed in the hydraulic oil to escape, preventing the air from having adverse effects on the closed-loop control hydraulic system 10, such as reducing the rigidity of the closed-loop control hydraulic system 10 and causing the actuator to creep.

[0083] Meanwhile, the oil mark 16 can be used to display the level or height of the hydraulic oil in the oil tank 15, so that the operator can add or check the hydraulic oil in time. Optionally, the oil mark 16 can be a transparent pipe or window, which is connected to the inside of the oil tank 15.

[0084] It should be noted that the pressure measuring joint 17 can be used to connect the pressure sensor 12 and the components in the closed-loop control hydraulic system 10. There is a channel inside the pressure measuring joint 17. In practical applications, when it is necessary to measure the pressure at a specific point in the closed-loop control hydraulic system 10, the pressure measuring joint 17 can be connected to the corresponding pipeline of the closed-loop control hydraulic system 10. In addition, the pressure of the hydraulic oil can be transmitted to the connected pressure sensor 12 through the channel inside the pressure measuring joint 17. In the embodiment of the present application, Figure 2 Shown is a schematic diagram of the working principle of some components of the closed-loop control hydraulic system 10.

[0085] According to the technical solution in the embodiment of the present application, the control system in the closed-loop control hydraulic system 10 can automatically control the operation of each component in the execution system to control the crimping operation of the crimping machine 20 without manual participation of the user. This can not only improve the working accuracy of each component, and thus improve the accuracy of the closed-loop control hydraulic system 10 in controlling the crimping machine 20, but also improve the crimping efficiency of the crimping machine 20.

[0086] like Figure 3 The structure diagram of the crimping system provided in the embodiment of the present application is shown, and the crimping system includes: a closed-loop control hydraulic system 10 and a crimping machine 20 as provided in any of the above embodiments; the closed-loop control hydraulic system 10 is connected to the crimping machine 20.

[0087] In the embodiment of the present application, the above-mentioned crimping machine 20 can be understood as a device for connecting metal terminals or connectors to conductive materials such as wires and cables by pressure. It should be noted here that the connection method between the closed-loop control hydraulic system 10 and the crimping machine 20 can be a pipeline connection, an integrated valve block connection, a direct installation connection, etc. Among them, the above-mentioned crimping machine 20 can be a hydraulic crimping machine; the above-mentioned hydraulic crimping machine can be a cable crimping machine, a pipe crimping machine, a busbar crimping machine, a split hydraulic crimping machine, an integrated hydraulic crimping machine, an automatic hydraulic crimping machine, etc.

[0088] The crimping system provided in the embodiment of the present application has similar implementation principles and technical effects to the closed-loop control hydraulic system 10, which will not be described in detail here.

[0089] like Figure 4 As shown, it is a flow chart of the control method of the crimping machine 20 provided in the embodiment of the present application, which is applied to the control system in the closed-loop control hydraulic system 10. The method can be implemented by the following steps:

[0090] S100 , obtaining a current pressure signal of the closed-loop control hydraulic system 10 .

[0091] Specifically, the control system may obtain the current pressure signal of the closed-loop control hydraulic system 10 collected in real time by the pressure sensor 12 in the closed-loop control hydraulic system 10 .

[0092] S200 , generating an adjustment electrical signal for the servo motor 11 in the closed-loop control hydraulic system 10 according to the working characteristics of the closed-loop control hydraulic system 10 and the current pressure signal.

[0093] In one implementation, the control system may pre-train an algorithm model, and then input the working characteristics of the closed-loop control hydraulic system 10 and the current pressure signal collected by the pressure sensor 12 into the algorithm model, and the algorithm model outputs the adjustment electrical signal of the servo motor 11. In another implementation, the control system may also search the working characteristics of the closed-loop control hydraulic system 10 and the current pressure signal collected by the pressure sensor 12 in a mapping relationship table, and determine the corresponding electrical signal in the mapping relationship table that matches the working characteristics of the closed-loop control hydraulic system 10 and the current pressure signal collected by the pressure sensor 12 as the adjustment electrical signal of the servo motor 11. The above-mentioned mapping relationship table may include the correspondence between different working characteristics of the closed-loop control hydraulic system 10, different pressure signals, and different electrical signals of the servo motor 11 in the closed-loop control hydraulic system 10.

[0094] In the embodiment of the present application, the working characteristics of the closed-loop control hydraulic system 10 may include pressure transmission characteristics, flow characteristics, power characteristics, load characteristics, etc. At the same time, the adjustment electric signal of the servo motor 11 may include information such as the position, speed or torque that the servo motor 11 needs to achieve; the adjustment electric signal may be the same as or different from the electric signal initially received by the servo motor 11.

[0095] S300 , sending an adjustment electrical signal to the servo motor 11 , instructing the servo motor 11 to respond to the adjustment electrical signal and adjust the pressure signal applied to the crimping machine 20 by the closed-loop control hydraulic system 10 to control the crimping machine 20 to be in a target crimping state.

[0096] Specifically, the control system may send an adjustment electrical signal to the servo motor 11 to instruct the servo motor 11 to respond to the adjustment electrical signal and adjust the pressure signal applied to the crimping machine 20 by the closed-loop control hydraulic system 10 to control the crimping machine 20 to be in a target crimping state.

[0097] It should be noted that the servo motor 11 can adjust its own position, speed or torque and other information after responding to the adjustment electrical signal, thereby adjusting the pressure signal applied to the crimping machine 20 by the closed-loop control hydraulic system 10 to control the crimping machine 20 to be in the target crimping state. The crimping machine 20 is in the target crimping state, indicating that the crimping machine 20 can achieve a higher crimping quality after performing the crimping operation on the crimping object.

[0098] The technical solution in the embodiment of the present application is applied to the control system in the closed-loop control hydraulic system 10, obtains the current pressure signal of the closed-loop control hydraulic system 10, generates an adjustment electrical signal of the servo motor 11 in the closed-loop control hydraulic system 10 according to the working characteristics of the closed-loop control hydraulic system 10 and the current pressure signal, and sends the adjustment electrical signal to the servo motor 11, instructing the servo motor 11 to respond to the adjustment electrical signal and adjust the pressure signal applied by the closed-loop control hydraulic system 10 to the crimping machine 20 to control the crimping machine 20 to be in the target crimping state; the above method can obtain the current pressure signal applied by the closed-loop control hydraulic system 10 to the crimping machine 20 in real time, and dynamically and flexibly adjust the pressure signal applied by the closed-loop control hydraulic system 10 according to the working characteristics of the closed-loop control hydraulic system 10 and the current pressure signal The pressure is applied to the crimping machine 20 so that the crimping machine 20 is in the target crimping state, thereby improving the crimping quality of the crimping machine 20; at the same time, the above method does not require manual participation of the user during the process of the closed-loop control hydraulic system 10 controlling the crimping machine 20 to perform the crimping operation, thereby not only improving the accuracy of the closed-loop control hydraulic system 10 in controlling the crimping machine 20, but also improving the crimping efficiency of the crimping machine 20; in addition, the above method can dynamically and flexibly adjust the speed of the servo motor 11 to match different torques according to the working characteristics of the closed-loop control hydraulic system 10 and the current pressure signal, so that the servo motor 11 can perfectly fit the working characteristics of the closed-loop control hydraulic system 10, which can not only ensure the crimping efficiency of the crimping machine 20, but also reduce the energy consumption of the crimping machine 20.

[0099] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0100] Based on the same inventive concept, the embodiment of the present application also provides a control device for a crimping machine for implementing the control method for a crimping machine involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of the control device for one or more crimping machines provided below can refer to the limitations of the control method for a crimping machine above, and will not be repeated here.

[0101] In one embodiment, Figure 5 This is a schematic diagram of the structure of a control device for a crimping machine in one embodiment of the present application. The control device for a crimping machine provided in the embodiment of the present application can be applied to a control system in a hydraulic system. Figure 5 As shown, the control device of the crimping machine in the embodiment of the present application may include: an acquisition module 01, a signal generation module 02 and a sending module 03, wherein:

[0102] Acquisition module 01, used to acquire the current pressure signal of the hydraulic system;

[0103] The signal generating module 02 is used to generate an adjustment electric signal of the servo motor according to the working characteristics of the hydraulic system and the current pressure signal;

[0104] The sending module 03 is used to send an adjustment electrical signal to the servo motor, instructing the servo motor to respond to the adjustment electrical signal and adjust the pressure signal applied by the hydraulic system to the crimping machine to control the crimping machine to be in a target crimping state.

[0105] The control device of the crimping machine provided in the embodiment of the present application can be used to execute the technical solution in the control method embodiment of the crimping machine mentioned above in the present application. Its implementation principle and technical effect are similar and will not be repeated here.

[0106] The specific definition of the control device of the crimping machine can be found in the definition of the control method of the crimping machine mentioned above, which will not be repeated here. Each module in the control device of the crimping machine can be implemented in whole or in part by software, hardware and a combination thereof. The above modules can be embedded in or independent of the control system in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the control system can call and execute the operations corresponding to the above modules.

[0107] In one embodiment, a computer device is also provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Figure 6 As shown. The computer device includes a control system, a memory and a network interface connected through a system bus. Among them, the control system of the computer device is used to provide processing power. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store backup data of the logical disk. The network interface of the computer device is used to communicate with an external end point through a network connection. When the computer program is executed by the control system, a control method of a crimping machine is implemented.

[0108] Those skilled in the art will understand that Figure 6The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0109] In one embodiment, a computer device is also provided, including a memory and a control system, wherein a computer program is stored in the memory. When the control system executes the computer program, the technical solution in the control method embodiment of the crimping machine mentioned above in the present application is implemented. The implementation principle and technical effect are similar and will not be repeated here.

[0110] In one embodiment, a computer-readable storage medium is also provided, on which a computer program is stored. When the computer program is executed by the control system, the technical solution of the control method of the crimping machine mentioned above in the present application is implemented. The implementation principle and technical effect are similar and will not be repeated here.

[0111] In one embodiment, a computer program product is also provided, including a computer program, which, when executed by a control system, implements the technical solution of the control method of the crimping machine mentioned above in the present application. The implementation principle and technical effect are similar and will not be repeated here.

[0112] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0113] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0114] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A closed-loop control hydraulic system, characterized in that: The closed-loop control hydraulic system comprises: a servo motor, a pressure sensor and a control system, wherein the pressure sensor is arranged on the oil circuit of the closed-loop control hydraulic system; The pressure sensor is used to collect the current pressure signal applied to the crimping machine by the closed-loop control hydraulic system; The control system is used to generate an adjustment electric signal for the servo motor according to the working characteristics of the closed-loop control hydraulic system and the current pressure signal, and send the adjustment electric signal to the servo motor; The servo motor is used to respond to the adjustment electrical signal and adjust the pressure signal applied to the crimping machine by the closed-loop control hydraulic system to control the crimping machine to be in a target crimping state.

2. The closed-loop control hydraulic system according to claim 1, characterized in that: The closed-loop control hydraulic system further comprises: a double pump; The servo motor is specifically used to respond to the adjustment electrical signal, adjust the rotation speed of the double pump to control the flow of hydraulic oil in the double pump, so as to adjust the pressure signal applied to the crimping machine by the closed-loop control hydraulic system.

3. The system according to claim 2, characterized in that The double pump includes a hydraulic pump; the closed-loop control hydraulic system also includes an integrated valve group, and the integrated valve group includes an internal pipeline, a relief valve and a reversing valve; The servo motor is also used to drive the hydraulic pump, adjust the volume of the oil suction chamber in the hydraulic pump, and control the output of hydraulic oil in the pump body of the hydraulic pump through the oil suction chamber; The control system is also used to control the flow direction, pressure and flow rate of the hydraulic oil according to the internal pipeline, the overflow valve and the reversing valve, so as to adjust the pressure signal of the closed-loop control hydraulic system.

4. The closed-loop control hydraulic system according to claim 3, characterized in that: The integrated valve group also includes a low-pressure relief valve and an unloading valve; The control system is also used to control the low-pressure relief valve to adjust the pressure signal of the closed-loop control hydraulic system to be within a preset pressure signal range; and to control the unloading valve to reduce the pressure of the closed-loop control hydraulic system.

5. The closed-loop control hydraulic system according to any one of claims 1 to 4, characterized in that: The closed-loop control hydraulic system also includes: an oil tank, an oil gauge and a pressure measuring joint; The oil tank is used to store hydraulic oil for suction by the pump body of the hydraulic pump in the double pump, and to store hydraulic oil flowing back from the closed-loop control hydraulic system; The oil mark is used to display the liquid level of the hydraulic oil in the oil tank; Wherein, the pressure measuring joint is connected to the pressure sensor, and when the pressure sensor measures the pressure of a corresponding point in the closed-loop control hydraulic system, the pressure measuring joint is connected to a corresponding pipeline in the closed-loop control hydraulic system.

6. A crimping system, characterized in that: The crimping system comprises: a closed-loop controlled hydraulic system and a crimping machine as described in any one of claims 1 to 5; the closed-loop controlled hydraulic system is connected to the crimping machine.

7. A control method for a crimping machine, characterized in that: A control system applied to a closed-loop control hydraulic system, the method comprising: Acquiring a current pressure signal of the closed-loop control hydraulic system; generating an adjustment electrical signal for a servo motor in the closed-loop control hydraulic system according to the working characteristics of the closed-loop control hydraulic system and the current pressure signal; The adjustment electrical signal is sent to the servo motor to instruct the servo motor to respond to the adjustment electrical signal and adjust the pressure signal applied to the crimping machine by the closed-loop control hydraulic system to control the crimping machine to be in a target crimping state.

8. A control device for a crimping machine, characterized in that: The device comprises: An acquisition module, used for acquiring a current pressure signal of a closed-loop control hydraulic system; A signal generating module, used for generating an adjustment electric signal of the servo motor according to the working characteristics of the closed-loop control hydraulic system and the current pressure signal; The sending module is used to send the adjustment electrical signal to the servo motor, instructing the servo motor to respond to the adjustment electrical signal and adjust the pressure signal applied to the crimping machine by the closed-loop control hydraulic system to control the crimping machine to be in a target crimping state.

9. A computer device comprising a memory and a control system, wherein the memory stores a computer program, characterized in that: When the control system executes the computer program, the steps of the method according to claim 7 are implemented.

10. A readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a control system, the steps of the method according to claim 7 are implemented.

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