New energy multifunctional ultrahigh pressure hydraulic pump

Abstract

The invention belongs to the technical field of electric power tools, and discloses a new-energy multifunctional ultrahigh-pressure hydraulic pump which comprises a motor, a hydraulic clamp, a hydraulic pump body, an electromagnetic reversing valve, a pressure sensor, a master control module, a manual switching valve and a high-pressure oil pipe. The control system is characterized by further comprising operation keys, a liquid crystal display module, a motor driver, an air switch, a battery bin, a battery and a remote controller, the electromagnetic directional valve comprises a high-pressure electromagnetic valve and a low-pressure electromagnetic valve, and the pressure sensors comprise a high-pressure pressure sensor and a low-pressure pressure sensor. The master control module comprises a core control unit MCU, an AD analog sampling module and an I / O driving amplification module. The high-altitude crimping system has the following main beneficial technical effects that during high-altitude crimping operation, the control sight is clear, the noise is low, no tail gas is discharged basically, the crimping quality is controllable and visible, the control modes are diversified, and construction data can be stored for a long time so as to be convenient for subsequent calling and use.

Description

Technical Field

[0001] The invention belongs to the technical field of electric tools, and in particular relates to a new energy multifunctional ultra-high pressure hydraulic pump. Background Art

[0002] In the prior art, when crimping power transmission line cables, conventional hydraulic pumps use fuel engines as power. Fuel engines have the disadvantages of being unable to start frequently, making loud noises, causing exhaust pollution, unclear control vision during high-altitude crimping operations, and being unable to operate in cable tunnels.

[0003] CN116954106A discloses an intelligent crimping tool and a control method. The circuit and function of the intelligent crimping tool are highly integrated. Tool operation and remote data transmission do not require the addition of external transfer equipment such as mobile phones, so remote communication and crimping can be achieved. At the same time, each intelligent crimping tool is equivalent to a mobile phone and can be directly connected to a server. The chip in the intelligent crimping tool associates the unique identification code, global positioning coordinates and work operation data of the intelligent crimping tool, and sends them to the central server, which permanently stores the data to achieve traceability of the work data, enhance the construction party's control over the project progress, and further control the project time. On the basis of filling the gap in the domestic market for portable hydraulic tools, the real-time nature of the work data is improved, thereby improving work efficiency.

[0004] CN211320537U discloses a crimping machine for electric power engineering, comprising a crimping machine housing, a hydraulic mechanism, and a hydraulic power mechanism. The hydraulic mechanism is arranged inside the crimping machine housing, and the hydraulic power mechanism is connected to the outside of the crimping machine housing. The crimping machine housing comprises a crimping ring, one end of the crimping ring is arranged with a crimping block, a crimping machine handle is arranged at the lower part of the crimping machine housing, a crimping ring die is connected inside the crimping ring, a crimping block die is connected inside the crimping block, and a crimping block guide rail is connected to the lower part of the crimping block. The wire body is extruded and connected through the arrangement of the hydraulic mechanism, the crimping ring and the crimping block, and the overall structure is simple through the integrated design of the crimping machine housing, and automatic crimping is achieved through the hydraulic pump and the hydraulic pump battery. The crimping machine is easy to operate, which improves the convenience of use and is convenient for outdoor operations.

[0005] The above-mentioned prior art cannot solve the technical problems existing in the traditional hydraulic pump in the above-mentioned prior art. Summary of the invention

[0006] To solve the above problems, the purpose of the present invention is to disclose a new energy multifunctional ultra-high pressure hydraulic pump, which is realized by adopting the following technical solutions.

[0007] A new energy multifunctional ultra-high pressure hydraulic pump comprises a motor, a hydraulic clamp, a hydraulic pump, an electromagnetic reversing valve, a pressure sensor, a master control module, a manual switching valve, and a high-pressure oil pipe; the pump is characterized in that it also has an operation button, a liquid crystal display module, a motor driver, an air switch, a battery compartment, a battery, and a remote control; the electromagnetic reversing valve comprises a high-pressure electromagnetic valve and a low-pressure electromagnetic valve; the pressure sensor comprises a high-pressure pressure sensor and a low-pressure pressure sensor; the master control module comprises a core control unit MCU, an AD analog sampling module, and an I / O drive amplifier module; the battery compartment is located in a groove at the top of the new energy multifunctional ultra-high pressure hydraulic pump, and the battery is located in the battery compartment, and the battery supplies power to the electrical components in the new energy multifunctional ultra-high pressure hydraulic pump; the signals received by the high-pressure pressure sensor and the low-pressure pressure sensor are sent to the AD analog sampling module, the operation button, the liquid crystal display module, the motor driver, the AD analog sampling module, and the I / O drive amplifier module are connected to the core control unit MCU, the output end of the I / O drive amplifier module is respectively connected to the control input end of the high-pressure electromagnetic valve and the low-pressure electromagnetic valve, and the control output end of the high-pressure electromagnetic valve and the low-pressure electromagnetic valve is connected to the valve control end of the hydraulic pump, The output end of the motor driver is connected to the control end of the motor, and the output end of the motor is connected to the control end of the hydraulic pump. The hydraulic pump controls the action of the hydraulic pliers; the air switch is used to control the on and off of the battery power, and the remote control is used to receive and send instructions and status information of the new energy multifunctional ultra-high pressure hydraulic pump.

[0008] The above-mentioned new energy multifunctional ultra-high pressure hydraulic pump is characterized in that the method for crimping the cable connector is as follows: The crimping process is as follows: the high-pressure solenoid valve is opened through the core control unit MCU, and the hydraulic pump pumps hydraulic oil into the high-pressure hydraulic cylinder. The hydraulic cylinder drives the hydraulic clamp to rise and start crimping the cable. After the cable is squeezed, the pressure of the hydraulic cylinder rises rapidly and is fed back to the core control unit MCU through the high-pressure pressure sensor. When the pressure detected by the high-pressure pressure sensor reaches the set pressure, the crimping pressure holding timer starts. When the pressure holding time is reached, the machine stops crimping, the high-pressure solenoid valve is closed, the low-pressure solenoid valve is opened, and the hydraulic clamp starts to descend and retreat; The backing process is as follows: after switching to the low-pressure solenoid valve, hydraulic oil is pumped into the low-pressure hydraulic cylinder through the hydraulic pump, and the hydraulic cylinder drives the hydraulic clamp to descend rapidly. At this time, the pressure of the low-pressure hydraulic cylinder is relatively small, usually less than 5Mpa. When the hydraulic cylinder retreats to the bottom, the hydraulic cylinder cannot continue to descend because the hydraulic pump continues to deliver oil to the low-pressure hydraulic cylinder, causing the low-pressure pressure sensor pressure to rise instantly, from less than 5Mpa to more than 10Mpa. The low-pressure pressure sensor is used for detection. When the low-pressure pressure sensor is greater than 10Mpa, it is judged that the backing process has been in place, and the high-pressure solenoid valve and the low-pressure solenoid valve are switched, and the hydraulic pump motor is turned off at the same time, and the backing process is completed and ended.

[0009] The present application has the following major beneficial technical effects: clear control vision, low noise, basically no exhaust emissions during high-altitude crimping operations, controllable and visible crimping quality, various control methods, and construction data that can be stored for a long time for easy subsequent retrieval and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of this application.

[0011] Figure 2 for Figure 1 Enlarged left view structural diagram.

[0012] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction.

[0013] Figure 4 for Figure 1 Schematic diagram of the top view structure.

[0014] Figure 5 This is a schematic diagram of the composition of this application.

[0015] Figure 6 This is a control flow diagram of this application.

[0016] In the figure, the names of the figures corresponding to the figure numbers are: 1-operation button, 2-liquid crystal display module, 3-motor driver, 4-motor, 5-hydraulic pump, 6-hydraulic clamp, 7-solenoid reversing valve, 71-high-pressure solenoid valve, 72-low-pressure solenoid valve, 8-high-pressure pressure sensor, 9-low-pressure pressure sensor, 10-master control module, 101-core control unit MCU, 102-AD analog sampling module, 103-I / O drive amplifier module, 11-air switch, 12-communication module, 13-manual switching valve, 14-battery compartment, 15-battery. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand and implement this patent, the specific implementation methods of this application are now described in detail in conjunction with the drawings in the specification.

[0018] Please see Figures 1 to 6A new energy multifunctional ultra-high pressure hydraulic pump includes a motor 4, a hydraulic clamp 6, a hydraulic pump 5, an electromagnetic reversing valve 7, a pressure sensor, a master control module 10, a manual switching valve 13, and a high-pressure oil pipe; it is characterized in that it also has an operation button 1, a liquid crystal display module 2, a motor driver 3, an air switch 11, a battery compartment 14, a battery 15, and a remote control. The electromagnetic reversing valve 7 includes a high-pressure electromagnetic valve 71 and a low-pressure electromagnetic valve 72. The pressure sensor includes a high-pressure pressure sensor 8 and a low-pressure pressure sensor 9. The master control module 10 includes a core control unit MCU. 101, AD analog sampling module 102, I / O drive amplifier module 103; the battery compartment 14 is located in the groove at the top of the new energy multifunctional ultra-high pressure hydraulic pump, and the battery 15 is located in the battery compartment 14. The battery 15 supplies power to the electrical components in the new energy multifunctional ultra-high pressure hydraulic pump; the signals received by the high-pressure pressure sensor 8 and the low-pressure pressure sensor 9 are sent to the AD analog sampling module 102, the operation button 1, the liquid crystal display module 2, the motor driver 3, the AD analog sampling module 102, and the I / O drive amplifier module 103 are connected to the core control unit MCU 101, and the output end of the I / O drive amplifier module 103 is respectively connected to the control input end of the high-pressure solenoid valve 71 and the low-pressure solenoid valve 72, and the control output end of the high-pressure solenoid valve 71 and the low-pressure solenoid valve 72 is connected to the valve control end of the hydraulic pump 5, the output end of the motor driver 3 is connected to the control end of the motor 4, and the output end of the motor 4 is connected to the control end of the hydraulic pump 5, The hydraulic pump 5 controls the action of the hydraulic pliers 6; the air switch 11 is used to control the on and off of the power of the battery 15; the remote controller is used to receive and send instructions and status information of the new energy multifunctional ultra-high pressure hydraulic pump.

[0019] The new energy multifunctional ultra-high pressure hydraulic pump described above is characterized by: it also has a communication module 12, and the communication module 12 is connected to the core control unit MCU 101.

[0020] Furthermore, the above-mentioned new energy multifunctional ultra-high pressure hydraulic pump is characterized in that it also has a cloud data center, which is connected to the master control module 10.

[0021] The above-mentioned new energy multifunctional ultra-high pressure hydraulic pump is characterized in that the battery 15 is a power lithium battery.

[0022] The above-mentioned new energy multifunctional ultra-high pressure hydraulic pump is characterized in that the motor 4 is a permanent magnet synchronous motor.

[0023] The above-mentioned new energy multifunctional ultra-high pressure hydraulic pump is characterized in that the communication module 12 is a 4G module.

[0024] The above-mentioned new energy multifunctional ultra-high pressure hydraulic pump is characterized in that the voltage of the battery 15 is DC 48V and the capacity is 55AH.

[0025] The above-mentioned new energy multifunctional ultra-high pressure hydraulic pump is characterized in that: the rated power of the motor 4 is 4 kW, the working voltage is DC 48 V, the rated torque is 18 N·m, and the rated speed is 1410 r / min.

[0026] The above-mentioned new energy multifunctional ultra-high pressure hydraulic pump is characterized in that the low-pressure flow of the hydraulic pump 5 is 8.1L / min, the high-pressure flow is 1.6L / min, the low-pressure pressure is 20MPa, and the high-pressure pressure is 94MPa.

[0027] The new energy multifunctional ultra-high pressure hydraulic pump in this application has manual mode and automatic mode; the control modes include manual, wired control and wireless control modes, the wireless remote control distance is ≥50m, and in automatic mode, it has a 3-second pressure-maintaining function.

[0028] The new energy multifunctional ultra-high pressure hydraulic pump in this application adopts a two-stage oil inlet device, which feeds a large flow rate at low pressure and a small flow rate at high pressure, and automatically switches between high and low pressure.

[0029] The new energy multifunctional ultra-high pressure hydraulic pump in this application has a pressure overload protection device.

[0030] The new energy multifunctional ultra-high pressure hydraulic pump in this application has the following information displayed on the LCD: pressure, number of crimping times, battery voltage and power, and crimping wire information.

[0031] The new energy multifunctional ultra-high pressure hydraulic pump in this application has the following alarm functions: A. Alarm when the power level is below 20%; B. Hydraulic pump leakage alarm, specifically, an alarm when the time required to reach 80MPa is exceeded for multiple times; C. Alarm when oil temperature>70°.

[0032] The above-mentioned new energy multifunctional ultra-high pressure hydraulic pump is characterized in that the method for crimping the cable connector is as follows: The crimping process is as follows: the high-pressure solenoid valve 71 is opened through the core control unit MCU, and the hydraulic pump 5 pumps hydraulic oil into the high-pressure hydraulic cylinder. The hydraulic cylinder drives the hydraulic clamp 6 to rise and start crimping the cable. After the cable is squeezed, the pressure of the hydraulic cylinder rises rapidly and is fed back to the core control unit MCU through the high-pressure pressure sensor 8. When the pressure detected by the high-pressure pressure sensor reaches the set pressure, the crimping pressure holding timer starts. When the pressure holding time is reached, the machine stops crimping, the high-pressure solenoid valve is closed, the low-pressure solenoid valve is opened, and the hydraulic clamp starts to descend and retreat; The backing process is as follows: after switching to the low-pressure solenoid valve, hydraulic oil is pumped into the low-pressure hydraulic cylinder through the hydraulic pump, and the hydraulic cylinder drives the hydraulic clamp to descend rapidly. At this time, the pressure of the low-pressure hydraulic cylinder is relatively small, usually less than 5Mpa. When the hydraulic cylinder retreats to the bottom, the hydraulic cylinder cannot continue to descend because the hydraulic pump continues to deliver oil to the low-pressure hydraulic cylinder, causing the low-pressure pressure sensor pressure to rise instantly, from less than 5Mpa to more than 10Mpa. The low-pressure pressure sensor is used for detection. When the low-pressure pressure sensor is greater than 10Mpa, it is judged that the backing process has been in place, and the high-pressure solenoid valve and the low-pressure solenoid valve are switched, and the hydraulic pump motor is turned off at the same time, and the backing process is completed and ended.

[0033] In the above-mentioned new energy multifunctional ultra-high pressure hydraulic pump, the high-pressure pressure sensor 8 can also be called the pressure sensor 1, and the low-pressure pressure sensor 9 can also be called the pressure sensor 2.

[0034] In the present application, manual setting and control can also be performed through the cooperation of the operation button 1 and the liquid crystal display module 2, so that manual operation can be achieved when the remote control is defective or has no power.

[0035] In this application, the new energy multifunctional ultra-high pressure hydraulic pump drives the hydraulic pump to work through the power of the motor. The hydraulic pump realizes the working processes such as crimping, pressure holding and retreat through the reversing valve, and the pressure sensor is used to determine the starting time of pressure holding and the retreat arrival position.

[0036] In this application, new energy batteries and permanent magnet synchronous motors are used as power. Statistical parameters such as pressure parameters, crimping time and cumulative crimping times in the hydraulic pump working process are uploaded to the cloud data center through the Internet of Things, thereby achieving a silent and environmentally friendly crimping process and permanent traceability analysis of crimping data.

[0037] In this application, it can be used in special environments such as forests and other working environments where gasoline cannot be used, and its low noise is also suitable for construction in cities.

[0038] In this application, for the model and line number of the wire, the model of the crimped cable is entered into the cable model selection menu through the setting button of the machine or remote control, and the model of the cable to be crimped is selected; during the crimping and changing process, the line changing button or button can be used to realize the selection and switching of 1 to 6 different line numbers.

[0039] Compared with the prior art, the main improvement of the present application is that electricity is used to replace the oil supply, and the corresponding control is also controlled by electricity, thereby adding an electronic control part.

[0040] Compared with the conventional fuel engine as the power source in the prior art, the present application has the following advantages: 1. The new energy multifunctional ultra-high pressure hydraulic pump uses power lithium batteries, motor drivers and motors to replace the power of traditional gasoline engines, solving the problem of fuel exhaust pollution. At the same time, through the digital control of the motor by the control module, it realizes frequent start and stop that the fuel engine cannot achieve, reduces the standby power consumption of the fuel engine, and can achieve zero power consumption during the non-crimping period.

[0041] 2. In traditional fuel engine control, the gasoline engine cannot monitor the torque of the hydraulic pump in real time, and can only work at the maximum torque and power of the gasoline engine. If the hydraulic pump is blocked or other faults occur, the gasoline engine still cannot drive the hydraulic pump after outputting the maximum torque and power, that is, it will shut down. This mode will cause overload damage to both the hydraulic pump and the gasoline engine. Through new energy electronic control and motor control, the system torque and power can be monitored in real time. Through the preset protection value of the program, it can be realized that if an abnormal overload occurs, it can be stopped immediately, and the hydraulic cylinder and transmission system can be protected from damage at the first time. Both the remote control and the host have LCD screens to display the real-time parameters of the system, including hydraulic pump pressure, pressure holding time, cumulative crimping times, etc. The hydraulic pump pressure is an important parameter to ensure the quality of cable crimping. If the pressure is too low, it is easy to cause insufficient crimping extrusion force and insufficient bearing capacity at the cable crimping. Excessive pressure can easily cause excessive deformation and additional stress damage to the cable. Therefore, through the pressure display and control of pressure digitization, the crimping quality of the cable can be improved; the pressure holding time is also the second factor to ensure the quality of the press. The cumulative number of crimping times represents the number of times the crimping machine has worked. The crimping machine requires regular maintenance. The number of crimping times and the cumulative working time provide more detailed parameter basis for regular maintenance.

[0042] 3. The new energy multifunctional ultra-high pressure hydraulic pump adopts the core control unit as the central controller, realizes human-computer interaction through the LCD display and operation buttons, drives the motor to operate by controlling the motor driver, and the motor drives the hydraulic pump to work. The hydraulic pump controls the high and low pressure switching valves to realize the crimping and withdrawal of the hydraulic pliers. The pressure holding pressure during the crimping process is fed back by the high pressure pressure sensor, and the withdrawal of the crimping pliers is fed back by the low pressure pressure sensor.

[0043] 4. As a new type of electric machinery and equipment, the new energy multifunctional ultra-high pressure hydraulic pump has complex operating conditions. As the power project is used in the field for a long time or maintained and stored in different warehouses, the 4G module with dual positioning of GPS and base station can realize the positioning of the equipment throughout its life cycle, and report the positioning information to the cloud data center once a day through the 4G module. The data center can display the exact address of the equipment, judge the usage status of the equipment, improve equipment management and scheduling, and thus improve the utilization rate of the equipment.

[0044] This application solves problems such as fuel exhaust pollution. At the same time, through the digital control of the motor by the control module, it realizes frequent starting and stopping that cannot be achieved by the fuel engine, reduces the standby power consumption of the fuel engine, and achieves zero power consumption during the non-crimping period.

[0045] The present application has the following major beneficial technical effects: clear control vision, low noise, basically no exhaust emissions during high-altitude crimping operations, controllable and visible crimping quality, various control methods, and construction data that can be stored for a long time for easy subsequent retrieval and use.

[0046] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A new energy multifunctional ultra-high pressure hydraulic pump, comprising a motor, a hydraulic clamp, a hydraulic pump, an electromagnetic reversing valve, a pressure sensor, a master control module, a manual switching valve, and a high-pressure oil pipe; characterized in that: It also has operating buttons, a liquid crystal display module, a motor driver, an air switch, a battery compartment, a battery, a remote control, the electromagnetic reversing valve includes a high-pressure electromagnetic valve and a low-pressure electromagnetic valve, the pressure sensor includes a high-pressure pressure sensor and a low-pressure pressure sensor, and the master control module includes a core control unit MCU, an AD analog sampling module, and an I / O drive amplifier module; The battery compartment is located in the groove at the top of the new energy multifunctional ultra-high pressure hydraulic pump, and the battery is located in the battery compartment. The battery supplies power to the electrical components in the new energy multifunctional ultra-high pressure hydraulic pump; the signals received by the high-pressure pressure sensor and the low-pressure pressure sensor are sent to the AD analog sampling module, the operation buttons, the liquid crystal display module, the motor driver, the AD analog sampling module, and the I / O drive amplifier module are connected to the core control unit MCU, and the output end of the I / O drive amplifier module is respectively connected to the control input end of the high-pressure solenoid valve and the low-pressure solenoid valve, and the control output end of the high-pressure solenoid valve and the low-pressure solenoid valve is connected to the valve control end of the hydraulic pump, the output end of the motor driver is connected to the control end of the motor, and the output end of the motor is connected to the control end of the hydraulic pump, and the hydraulic pump controls the action of the hydraulic pliers; the air switch is used to control the on and off of the battery power, and the remote control is used to receive and send instructions and status information of the new energy multifunctional ultra-high pressure hydraulic pump.

2. A new energy multifunctional ultra-high pressure hydraulic pump according to claim 1, characterized in that The method used to crimp cable connectors is as follows: The crimping process is as follows: the high-pressure solenoid valve is opened through the core control unit MCU, and the hydraulic pump pumps hydraulic oil into the high-pressure hydraulic cylinder. The hydraulic cylinder drives the hydraulic clamp to rise and start crimping the cable. After the cable is squeezed, the pressure of the hydraulic cylinder rises rapidly and is fed back to the core control unit MCU through the high-pressure pressure sensor. When the pressure detected by the high-pressure pressure sensor reaches the set pressure, the crimping pressure holding timer starts. When the pressure holding time is reached, the machine stops crimping, the high-pressure solenoid valve is closed, the low-pressure solenoid valve is opened, and the hydraulic clamp starts to descend and retreat; The backing process is as follows: after switching to the low-pressure solenoid valve, hydraulic oil is pumped into the low-pressure hydraulic cylinder through the hydraulic pump, and the hydraulic cylinder drives the hydraulic clamp to descend rapidly. At this time, the pressure of the low-pressure hydraulic cylinder is relatively small, usually less than 5Mpa. When the hydraulic cylinder retreats to the bottom, the hydraulic cylinder cannot continue to descend because the hydraulic pump continues to deliver oil to the low-pressure hydraulic cylinder, causing the low-pressure pressure sensor pressure to rise instantly, from less than 5Mpa to more than 10Mpa. The low-pressure pressure sensor is used for detection. When the low-pressure pressure sensor is greater than 10Mpa, it is judged that the backing process has been in place, and the high-pressure solenoid valve and the low-pressure solenoid valve are switched, and the hydraulic pump motor is turned off at the same time, and the backing process is completed and ended.

3. A new energy multifunctional ultra-high pressure hydraulic pump according to claim 1 or claim 2, characterized in that: The device also has a communication module which is connected to the core control unit MCU.

4. The new energy multifunctional ultra-high pressure hydraulic pump according to claim 3 is characterized in that: It also has a cloud data center which is connected to the master control module.

5. The new energy multifunctional ultra-high pressure hydraulic pump according to claim 4 is characterized in that: The battery is a power lithium battery.

6. The new energy multifunctional ultra-high pressure hydraulic pump according to claim 5 is characterized in that: The motor is a permanent magnet synchronous motor.

7. The new energy multifunctional ultra-high pressure hydraulic pump according to claim 6 is characterized in that: The communication module is a 4G module.

8. The new energy multifunctional ultra-high pressure hydraulic pump according to claim 7, characterized in that: The battery voltage is DC 48V and the capacity is 55AH.

9. The new energy multifunctional ultra-high pressure hydraulic pump according to claim 8, characterized in that: The rated power of the motor is 4kW, the working voltage is DC 48V, the rated torque is 18 N·m, and the rated speed is 1410r / min; the low-pressure flow of the hydraulic pump is 8.1L / min, the high-pressure flow is 1.6L / min, the low-pressure pressure is 20MPa, and the high-pressure pressure is 94MPa; the new energy multifunctional ultra-high-pressure hydraulic pump has manual mode and automatic mode; the control methods include manual, wire control, and wireless control mode, and the wireless remote control distance is ≥50m. In automatic mode, it has a 3-second pressure-maintaining function; the oil pump adopts a two-stage oil inlet device, with a large flow feed at low pressure and a small flow feed at high pressure, and automatic switching between high and low pressures; the LCD displays the following information: pressure, number of crimping times, battery voltage and power, and crimping wire information.

10. The new energy multifunctional ultra-high pressure hydraulic pump according to claim 9, characterized in that It has the following alarm functions: A. Alarm when the power level is below 20%; B. Hydraulic pump leakage alarm, specifically, an alarm when the time required to reach 80MPa is exceeded for multiple times; C. Alarm when oil temperature>70°.

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