Method, device and working machine for durability testing of a workpiece

Abstract

The application provides a kind of durable test method, device and working machine of workpiece, workpiece includes motor, pump and valve.Motor, pump and valve are installed on working machine, method includes: control high-low voltage on working machine;When high-low voltage on working machine is successful, gear of working machine is switched to target gear, and pilot handle is opened, and working mode selection instruction is received;When working mode selection instruction indicates test mode, motor, pump and valve are tested for durability;After durability test is completed, determine whether to meet the next high-low voltage condition, if meet, control working machine to lower high-low voltage, by installing motor, pump and valve on working machine to test durability, can make test result more close to actual working condition of working machine, and can test durability of motor, pump and valve on whole machine, compared with single static test, test result is more accurate and reliable.

Description

Technical Field

[0001] This invention relates to the field of durability testing technology, and in particular to a method, apparatus and machinery for durability testing of workpieces. Background Technology

[0002] Currently, when performing durability tests on pumps and valves using heavy machinery such as electric excavators, nationally recognized testing standards are typically adopted. Various test benches are built, and these benches primarily connect the components under test into a testing system via piping to perform tests on various parameters, including independent impact durability tests on individual components such as pumps and valves. Each test requires reconnecting the piping to establish the testing system.

[0003] However, the test bench can only test individual components such as pumps and valves, and can only perform static tests, which cannot meet the needs of dynamic testing, resulting in a certain gap between the test results and actual applications. Summary of the Invention

[0004] This invention provides a method, apparatus, and machinery for durability testing of workpieces, which solves the shortcomings of existing technologies that cannot perform real-time dynamic durability testing on motors, pumps, valves, and the entire machine.

[0005] This invention provides a durability testing method for a workpiece, the workpiece comprising a motor, a pump, and a valve, wherein the motor, the pump, and the valve are mounted on a working machine, and the durability testing method for the workpiece includes:

[0006] Control the high and low voltage electrical circuits on the operating machinery;

[0007] Once the high and low voltage power supply to the machine is successfully completed, switch the machine to the target gear and open the pilot handle to receive the working mode selection command.

[0008] When the operating mode selection command indicates the test mode, a durability test is performed on the motor, the pump, and the valve.

[0009] After the durability test is completed, it is determined whether the conditions for lowering the high and low voltage are met. If they are met, the high and low voltage of the working machinery is controlled to be lowered.

[0010] According to a durability testing method for a workpiece provided by the present invention, the durability test of the motor, the pump, and the valve includes:

[0011] The machine is controlled to perform operations based on preset power supply mode and preset speed supply mode;

[0012] During the operation of the controlled machinery, the performance parameters of the motor, the pump, and the valve are detected.

[0013] Based on the performance parameters, the durability test results of the motor, the pump, and the valve are determined.

[0014] According to the present invention, a method for testing the durability of a workpiece, wherein controlling the operating machinery to perform operations based on a preset power supply mode includes:

[0015] The operating machinery is controlled to operate without movement at a first preset power level;

[0016] After the inactive operation reaches a first duration, the operating machinery is controlled to increase or decrease power according to a preset time interval, and the operating machinery is controlled to work after the power increase or decrease.

[0017] After repeating the power increase and decrease preset number of times, the operating machinery is controlled to reduce its power to the first preset power, and the operating machinery is controlled to operate without movement at the first preset power.

[0018] According to a durability testing method for a workpiece provided by the present invention, the step of controlling the working machine to increase and decrease power according to a preset time interval, and controlling the working machine to operate after the increase or decrease of power, includes:

[0019] The operating machinery is controlled to increase its power to a second preset power within a second preset time period, and the operating machinery is controlled to work at the second preset power.

[0020] After the working machine operates at the second preset power for a third preset time, the working machine is controlled to reduce its power to the third preset power within a fourth preset time, and then the working machine is controlled to operate at the third preset power.

[0021] According to a durability testing method for a workpiece provided by the present invention, the step of controlling the working machine to perform operations based on a preset rotation speed supply mode includes:

[0022] The operating machinery is controlled to operate without movement at a first preset speed.

[0023] After the inactive operation reaches the fourth preset time, the rotation speed of the working machine is controlled to be increased to the second preset speed, and the working machine is controlled to work at the second preset speed.

[0024] After controlling the working machine to operate at the second preset speed for a fifth preset time, the working machine is controlled to reduce its speed to the third preset speed within a sixth preset time.

[0025] According to the present invention, a durability testing method for a workpiece is provided, wherein the performance parameters include motor performance parameters and pump / valve performance parameters;

[0026] The motor performance parameters include: the state of charge of the motor's battery module, battery temperature, discharge current, maximum cell voltage, minimum cell voltage, insulation resistance, discharge capacity, charging capacity, motor control unit input voltage, motor control unit input current, motor control unit output current, motor control unit output speed, motor control unit output torque, and motor temperature.

[0027] The pump and valve performance parameters include rotary pressure and hydraulic oil temperature.

[0028] According to a durability testing method for a workpiece provided by the present invention, determining whether the lower high and lower voltage electrical conditions are met includes:

[0029] The state of charge of the motor's battery module and the temperature of the hydraulic oil are detected.

[0030] When the state of charge is less than a preset percentage, and / or the hydraulic oil temperature is higher than a preset temperature, it is determined that the working machinery meets the low and high voltage electrical conditions.

[0031] According to the durability testing method for a workpiece provided by the present invention, after receiving the working mode selection instruction, the method further includes:

[0032] When the working mode selection instruction indicates a manual operation mode, the machine is controlled to perform operations according to the operator's instructions.

[0033] The present invention also provides a durability testing device for a workpiece, the workpiece including a motor, a pump, and a valve, the motor, the pump, and the valve being mounted on a working machine, the durability testing device for the workpiece comprising:

[0034] The high-voltage module is used to control the high and low voltage electricity on the operating machinery;

[0035] The testing module is used to switch the gear of the working machine to the target gear after the high and low voltage electricity is successfully connected, and to open the pilot handle to receive the working mode selection command; when the working mode selection command indicates the test mode, it performs a durability test on the motor, the pump and the valve.

[0036] The high-voltage module is used to determine whether the conditions for switching between high and low voltage are met after the durability test is completed. If the conditions are met, the module controls the operating machinery to switch between high and low voltage.

[0037] The present invention also provides a working machine for performing a durability test method for a workpiece as described in any of the preceding claims.

[0038] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement a durability testing method for any of the workpieces described above.

[0039] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a durability testing method for a workpiece as described above.

[0040] This invention provides a method, apparatus, and working machinery for durability testing of a workpiece. The workpiece includes a motor, a pump, and a valve, which are mounted on the working machinery. The method includes: controlling high and low voltage electricity on the working machinery; after successful high and low voltage electricity connection, switching the working machinery to the target gear and opening the pilot handle to receive a working mode selection command; when the working mode selection command indicates a test mode, performing a durability test on the motor, pump, and valve; after the durability test is completed, determining whether the conditions for lowering the high and low voltage electricity are met; if so, controlling the working machinery to lower the high and low voltage electricity. By mounting the motor, pump, and valve on the working machinery for durability testing, the test results are closer to the actual working conditions of the working machinery. Furthermore, durability testing can be performed on the entire machine, including the motor, pump, and valve, resulting in more accurate and reliable test results compared to a single static test. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 This is a flowchart illustrating the durability testing method for workpieces provided by the present invention.

[0043] Figure 2 This is a flowchart illustrating the components of the test module;

[0044] Figure 3 This is one of the schematic diagrams illustrating the power supply method provided in the embodiments of the present invention;

[0045] Figure 4 This is the second schematic diagram of the power supply method provided in the embodiment of the present invention;

[0046] Figure 5 This is a schematic diagram illustrating the principle of the rotational speed supply method provided in an embodiment of the present invention;

[0047] Figure 6This is a schematic diagram of the workpiece durability testing device provided by the present invention;

[0048] Figure 7 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0050] The following is combined with Figures 1 to 7 This invention describes a method, apparatus, and machinery for testing the durability of a workpiece.

[0051] Figure 1 This is a flowchart illustrating the durability testing method for workpieces provided by the present invention.

[0052] like Figure 1 As shown in the illustration, this invention provides a durability testing method for a workpiece, wherein the workpiece includes a motor, a pump, and a valve. The motor, pump, and valve are mounted on a working machine, meaning the durability test is performed on the entire machine. Taking an electric excavator as an example, the durability testing method mainly includes the following steps:

[0053] 101. Control the high and low voltage electricity on the operating machinery.

[0054] In a specific implementation, the durability testing method of this embodiment is conducted on the operating machinery, which is completely different from the traditional method of disassembling components and conducting separate static tests. Therefore, after successfully installing the motor, pump, and valve on the operating machinery, it is necessary to simulate the real working environment to ensure that the durability testing of the motor, pump, and valve is more accurate and reliable.

[0055] After preparation, the high and low voltage electricity is switched on to the operating machinery. This is done by detecting the one-button start signal. If the signal lasts for a first duration, the low voltage is switched on; if it lasts for a second duration, the high voltage is switched on, with the second duration being longer than the first. In other words, a short press of the start button switches on the low voltage, and a long press switches on the high voltage, thus switching the machinery to both high and low voltage. The high voltage primarily provides power to the machinery, while the low voltage supplies power to the low-voltage equipment within it.

[0056] 102. After the high and low voltage power is successfully supplied to the working machine, switch the machine to the target gear and open the pilot handle to receive the working mode selection command.

[0057] After the operating machinery has completed the connection of high and low voltage electricity, it is necessary to control the machinery to switch to the target gear, such as S10, and open the pilot handle. The method of controlling the gear switching to the target gear and opening the pilot handle can be completed automatically or manually.

[0058] Then, the system receives a working mode selection command, which determines whether to perform a durability test on the motor, pump, and valve, or to perform routine operations. The working mode selection command is input by the operator through a human-machine interface, which can be selected via a display screen. The operator selects the durability test mode for the motor, pump, and valve through the display screen.

[0059] 103. When the working mode selection command indicates the test mode, perform durability tests on the motor, pump, and valve.

[0060] Upon receiving the notification that a test mode is to be executed, it indicates that the operator intends to perform a durability test on the motor, pump, and valve. Therefore, the machine needs to be controlled to enter the test mode and perform a pressure-holding action according to a preset procedure. Various parameters are collected by different onboard sensors, including those from the battery module, electric drive module, motor module, and hydraulic module. By analyzing the parameters from these sensors, the performance of the motor, pump, and valve can be effectively determined.

[0061] Figure 2 This is a flowchart illustrating the test module structure. The test parameters differ for different test modules, and the workflow between different modules is as follows: Figure 2 As shown, the battery module provides voltage and current to the electric drive module, which in turn provides voltage and current to the motor module. The motor module provides torque and speed to the hydraulic module. The hydraulic module includes a main pump and a main valve; the main pump provides pressure and flow to the main valve. All modules work together with the entire machine to perform performance tests on each component of each subsystem, thereby completing the durability test of the motor, pump, and valve.

[0062] For the battery module, the main test and monitoring parameters include state of charge, battery temperature, discharge current, maximum cell voltage, minimum cell voltage, insulation resistance, discharge capacity, and charging capacity. For the electric drive module, the main test and monitoring parameters include motor control unit input voltage, motor control unit input current, motor control unit output current, motor control unit output speed, and motor control unit output torque. For the motor module, the main test and monitoring parameter is motor temperature. For the hydraulic module, the main test and monitoring parameters include rotational pressure and hydraulic oil temperature.

[0063] By using sensors or other methods, the parameter changes of various modules during the operation of the whole machine are acquired, thereby enabling durability testing of motors, pumps, and valves. Real-time monitoring of multiple parameters makes it easier to accurately understand the performance of each component.

[0064] 104. After the durability test is completed, determine whether the conditions for switching between high and low voltage are met. If they are met, control the machine to switch between high and low voltage.

[0065] After the endurance test is completed, it is necessary to determine whether to power off and whether the conditions for powering off high and low voltage are met. If they are met, control the machine to power off high and low voltage and restore the machine to normal operation.

[0066] The method to determine whether the operating machinery meets the high / low voltage electrical conditions is to detect the state of charge (SBC) of the motor's battery module and the hydraulic oil temperature. If the SBC is less than a preset percentage (e.g., less than 10%) and / or the hydraulic oil temperature is higher than a preset temperature (e.g., greater than 87 degrees Celsius), then the operating machinery is determined to meet the high / low voltage electrical conditions. At this point, the high / low voltage procedure is initiated to process the operating machinery under high / low voltage conditions. This completes the endurance test of the operating machinery's motor, pump, and valves.

[0067] This embodiment provides a durability testing method for a workpiece, comprising: controlling high and low voltage electricity on a working machine; after the high and low voltage electricity is successfully applied to the working machine, switching the machine's gear to the target gear and opening the pilot handle to receive a working mode selection command; when the working mode selection command indicates a test mode, performing durability testing on the motor, pump, and valve; after the durability test is completed, determining whether the conditions for applying high and low voltage electricity are met; if so, controlling the working machine to apply high and low voltage electricity. By installing the motor, pump, and valve on the working machine for durability testing, the test results can be more closely approximating the actual working conditions of the working machine, and durability testing can be performed on the entire machine, including the motor, pump, and valve. Compared with a single static test, the test results are more accurate and reliable.

[0068] Furthermore, based on the above embodiments, the durability test of the motor, pump, and valve in this embodiment includes: controlling the operating machinery to perform operations based on a preset power supply mode and a preset speed supply mode; detecting the performance parameters of the motor, pump, and valve during the operation of the operating machinery; and determining the durability test results of the motor, pump, and valve based on the performance parameters.

[0069] Specifically, the durability test method mainly involves applying different power and speed to simulate actual working conditions of the machinery, and then collecting the performance parameters of the motor, pump, and valve under the simulated conditions. These performance parameters include the motor performance parameters and pump / valve performance parameters mentioned in the above embodiments. Motor performance parameters include: the state of charge of the motor's battery module, battery temperature, discharge current, maximum cell voltage, minimum cell voltage, insulation resistance, discharge capacity, charging capacity, motor control unit input voltage, motor control unit input current, motor control unit output current, motor control unit output speed, motor control unit output torque, and motor temperature. Pump / valve performance parameters include rotational pressure and hydraulic oil temperature.

[0070] By collecting performance parameters of motors, pumps, and valves at different power and speeds, the operating status of these components can be determined, enabling more accurate testing of their durability. Compared to static testing by disassembling individual components, durability testing on the entire machine, which can be conducted under varying power and speed conditions, ensures that the final test results better reflect actual needs and are more reliable.

[0071] Furthermore, based on the above embodiments, the method of controlling the working machinery to perform operations based on a preset power supply mode in this embodiment includes: controlling the working machinery to operate without movement at a first preset power; after the inactive operation reaches a first duration, controlling the working machinery to increase and decrease power according to a preset time interval, and controlling the working machinery to work after increasing or decreasing power; after repeating the increase and decrease of power a preset number of times, controlling the working machinery to decrease power to the first preset power, and controlling the working machinery to operate without movement at the first preset power.

[0072] The method of controlling the operating machinery to increase and decrease power according to a preset time interval, and controlling the operating machinery to work after increasing or decreasing power, includes: controlling the operating machinery to increase power to a second preset power within a second preset time period, and controlling the operating machinery to work at the second preset power; after the operating machinery works at the second preset power for a third preset time period, controlling the operating machinery to decrease power to a third preset power within a fourth preset time period, and controlling the operating machinery to work at the third preset power.

[0073] Figure 3This is one of the schematic diagrams of the power supply method provided in this embodiment.

[0074] Specifically, such as Figure 3 As shown, P represents power and t represents time. The power supply method for the operating machinery can be as follows: First, it operates without movement for a first preset time at a first preset power of 30 kW. Then, within a second preset time of 0.5 s, the power is increased to a second preset power of 93.5 kW, and it continues to work for a third working time of 3 s. Next, the operating machinery is controlled to reduce its power to a third preset power of 30 kW within 0.5 s for operation. This power increase and decrease operation is repeated for a long period of time. Finally, within a second preset time of 0.5 s, the power of the operating machinery is controlled to reduce to the first preset power of 30 kW. "Without movement" refers to the operating machinery not performing any operating actions, such as digging or rotating. "Without movement" is the opposite of the working state, meaning that the operating machinery remains inactive after starting.

[0075] Figure 4 This is the second schematic diagram of the power supply method provided in this embodiment.

[0076] like Figure 4 As shown, the power supply method can be to control the operating machinery to run at 30Kw without movement, then increase the power to 93.5Kw in 0.5s and continue to work for 3s; then reduce the power to 30Kw in 0.5s and continue to work for 3s; repeat the power increase and power decrease operation for a long time, and finally reduce the power to 30Kw in 0.5s.

[0077] By adjusting the power of the operating machinery according to a preset time pattern, different working conditions can be effectively simulated, thereby ensuring that the durability test is more accurate and reliable.

[0078] Furthermore, based on the above embodiments, the method of controlling the working machinery to perform operations based on the preset speed supply in this embodiment includes: controlling the working machinery to operate without movement at a first preset speed; after the inactive operation reaches a fourth preset time, controlling the speed of the working machinery to increase to a second preset speed, and controlling the working machinery to work at the second preset speed; after controlling the working machinery to work at the second preset speed for a fifth preset time, controlling the working machinery to reduce its speed to a third preset speed within a sixth preset time.

[0079] Figure 5 This is a schematic diagram illustrating the principle of the rotational speed supply method provided in this embodiment.

[0080] Specifically, such as Figure 5As shown, n represents rotational speed and t represents time. First, the machine is controlled to operate at a preset speed of 1000 rpm without any work. Then, the machine is controlled to increase to 1900 rpm within 0.5 seconds and operate at 1900 rpm for a fifth preset time, which can be maintained at 1900 rpm. Finally, after the durability test is completed, the machine's speed is controlled to decrease to 1000 rpm. By changing the rotational speed to simulate actual working conditions, the test results are closer to reality and more accurate and reliable compared to simply statically testing the components.

[0081] Furthermore, based on the above embodiments, after receiving the working mode selection instruction in this embodiment, it also includes: when the working mode selection instruction indicates a manual operation mode, controlling the working machinery to perform operations according to the operator's operation instructions.

[0082] Specifically, when the operator selects the manual operation mode, the machine will perform routine operations according to standard instructions and control procedures. The display screen allows for flexible switching between test mode and manual operation mode, facilitating both durability testing and normal machine operation. In manual operation mode, the operator can close the pilot handle, stopping the machine from outputting any work. Manual operation mode provides convenient control of the machine, while test mode facilitates durability testing of motors, pumps, and valves. The ability to switch freely between the two modes enhances operator convenience.

[0083] Based on the same general inventive concept, this invention also protects a workpiece durability testing device. The workpiece durability testing device provided by this invention will be described below. The workpiece durability testing device described below and the workpiece durability testing method described above can be referred to in correspondence.

[0084] Figure 6 This is a schematic diagram of the workpiece durability testing device provided by the present invention.

[0085] like Figure 6 As shown, this embodiment provides a workpiece durability testing device. The workpiece includes a motor, a pump, and a valve, which are mounted on a working machine. The workpiece durability testing device includes:

[0086] The high-voltage module 601 is used to control the high and low voltage electricity on the operating machinery.

[0087] The test module 602 is used to switch the gear of the working machine to the target gear after the high and low voltage electricity is successfully connected, and to open the pilot handle to receive the working mode selection command; when the working mode selection command indicates the test mode, it performs a durability test on the motor, pump and valve.

[0088] The high-voltage module 603 is used to determine whether the conditions for switching between high and low voltage are met after the endurance test is completed. If they are met, the module controls the machine to switch between high and low voltage.

[0089] This embodiment provides a durability testing device for a workpiece, which includes a motor, a pump, and a valve. The motor, pump, and valve are mounted on a working machine. High and low voltage electricity is controlled on the working machine. After successful high and low voltage electricity connection, the working machine's gear is switched to the target gear, and the pilot handle is opened to receive a working mode selection command. When the working mode selection command indicates a test mode, a durability test is performed on the motor, pump, and valve. After the durability test is completed, it is determined whether the conditions for lowering the high and low voltage are met. If so, the working machine is controlled to lower the high and low voltage. By mounting the motor, pump, and valve on the working machine for durability testing, the test results are more closely approximating the actual working conditions of the working machine. Furthermore, durability testing can be performed on the entire machine, including the motor, pump, and valve, resulting in more accurate and reliable test results compared to a single static test.

[0090] Furthermore, the test module 602 in this embodiment is specifically used for:

[0091] The machine is controlled to perform operations based on preset power supply mode and preset speed supply mode;

[0092] During the operation of the controlled machinery, the performance parameters of the motor, the pump, and the valve are detected.

[0093] Based on the performance parameters, the durability test results of the motor, the pump, and the valve are determined.

[0094] Furthermore, the test module 602 in this embodiment is specifically used for:

[0095] The operating machinery is controlled to operate without movement at a first preset power level;

[0096] After the inactive operation reaches a first duration, the operating machinery is controlled to increase or decrease power according to a preset time interval, and the operating machinery is controlled to work after the power increase or decrease.

[0097] After repeating the power increase and decrease preset number of times, the operating machinery is controlled to reduce its power to the first preset power, and the operating machinery is controlled to operate without movement at the first preset power.

[0098] Furthermore, the test module 602 in this embodiment is specifically used for:

[0099] The operating machinery is controlled to increase its power to a second preset power within a second preset time period, and the operating machinery is controlled to work at the second preset power.

[0100] After the working machine operates at the second preset power for a third preset time, the working machine is controlled to reduce its power to the third preset power within a fourth preset time, and then the working machine is controlled to operate at the third preset power.

[0101] Furthermore, the test module 602 in this embodiment is specifically used for:

[0102] The operating machinery is controlled to operate without movement at a first preset speed.

[0103] After the inactive operation reaches the fourth preset time, the rotation speed of the working machine is controlled to be increased to the second preset speed, and the working machine is controlled to work at the second preset speed.

[0104] After controlling the working machine to operate at the second preset speed for a fifth preset time, the working machine is controlled to reduce its speed to the third preset speed within a sixth preset time.

[0105] Furthermore, the performance parameters in this embodiment include motor performance parameters and pump / valve performance parameters;

[0106] The motor performance parameters include: the state of charge of the motor's battery module, battery temperature, discharge current, maximum cell voltage, minimum cell voltage, insulation resistance, discharge capacity, charging capacity, motor control unit input voltage, motor control unit input current, motor control unit output current, motor control unit output speed, motor control unit output torque, and motor temperature.

[0107] The pump and valve performance parameters include rotary pressure and hydraulic oil temperature.

[0108] Furthermore, the lower high-voltage module 603 in this embodiment is specifically used for:

[0109] The state of charge of the motor's battery module and the temperature of the hydraulic oil are detected.

[0110] When the state of charge is less than a preset percentage, and / or the hydraulic oil temperature is higher than a preset temperature, it is determined that the working machinery meets the low and high voltage electrical conditions.

[0111] Furthermore, this embodiment also includes a human operation module, used for:

[0112] When the working mode selection instruction indicates a manual operation mode, the machine is controlled to perform operations according to the operator's instructions.

[0113] Figure 7 This is a schematic diagram of the structure of the electronic device provided by the present invention.

[0114] like Figure 7 As shown, the electronic device may include a processor 710, a communication interface 720, a memory 730, and a communication bus 740. The processor 710, communication interface 720, and memory 730 communicate with each other via the communication bus 740. The processor 710 can call logic instructions in the memory 730 to execute a durability test method for a workpiece. The workpiece includes a motor, a pump, and a valve, which are mounted on a working machine. The method includes: controlling high and low voltage power on the working machine; after successful high and low voltage power connection, switching the working machine to the target gear and opening the pilot handle to receive a working mode selection instruction; when the working mode selection instruction indicates a test mode, performing a durability test on the motor, the pump, and the valve; and after the durability test is completed, determining whether the conditions for lowering the high and low voltage power are met. If met, controlling the working machine to lower the high and low voltage power.

[0115] Furthermore, the logical instructions in the aforementioned memory 730 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0116] On the other hand, the present invention also provides a computer program product, the computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, wherein when the program instructions are executed by a computer, the computer is able to execute the durability testing method for the workpiece provided by the above methods, the workpiece comprising a motor, a pump and a valve, the motor, the pump and the valve being mounted on a working machine, the method comprising: controlling high and low voltage electricity on the working machine; after the high and low voltage electricity on the working machine is successfully applied, switching the gear of the working machine to the target gear and opening the pilot handle to receive a working mode selection instruction; when the working mode selection instruction indicates a test mode, performing a durability test on the motor, the pump and the valve; after the durability test is completed, determining whether the conditions for lowering high and low voltage electricity are met, and if so, controlling the working machine to lower high and low voltage electricity.

[0117] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements a durability testing method for the aforementioned workpieces, the workpieces including a motor, a pump, and a valve, the motor, pump, and valve being mounted on a working machine, the method comprising: controlling high and low voltage electricity on the working machine; after the high and low voltage electricity on the working machine is successfully applied, switching the gear of the working machine to the target gear and opening the pilot handle to receive a working mode selection command; when the working mode selection command indicates a test mode, performing a durability test on the motor, the pump, and the valve; after the durability test is completed, determining whether the conditions for lowering high and low voltage electricity are met, and if so, controlling the working machine to lower the high and low voltage electricity.

[0118] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0119] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A durability testing method for a workpiece, characterized in that, The workpiece includes a motor, a pump, and a valve, which are mounted on the working machinery. The durability testing method for the workpiece includes: Control the high and low voltage electrical circuits on the operating machinery; Once the high and low voltage power supply to the machine is successfully completed, switch the machine to the target gear and open the pilot handle to receive the working mode selection command. When the operating mode selection command indicates the test mode, a durability test is performed on the motor, the pump, and the valve. After the durability test is completed, it is determined whether the conditions for switching between high and low voltage are met. If they are met, the high and low voltage of the working machinery is controlled to switch between high and low voltage. The durability test performed on the motor, the pump, and the valve includes: The machine is controlled to perform operations based on preset power supply mode and preset speed supply mode; During the operation of the controlled machinery, the performance parameters of the motor, the pump, and the valve are detected. Based on the performance parameters, the durability test results of the motor, the pump, and the valve are determined. The control of the working machinery to perform operations based on preset power supply mode and preset speed supply mode includes: The operating machinery is controlled to operate without movement at a first preset power level; After the inactive operation reaches a first duration, the operating machinery is controlled to increase or decrease power according to a preset time interval, and the operating machinery is controlled to work after the power increase or decrease. After repeating the power increase and decrease preset number of times, the operating machinery is controlled to reduce its power to the first preset power, and the operating machinery is controlled to operate without movement at the first preset power. The operating machinery is controlled to operate without movement at a first preset speed. After the inactive operation reaches the fourth preset time, the rotation speed of the working machine is controlled to be increased to the second preset speed, and the working machine is controlled to work at the second preset speed. After controlling the working machine to operate at the second preset speed for a fifth preset time, the working machine is controlled to reduce its speed to the third preset speed within a sixth preset time. The specific method for controlling the high and low voltage electricity on the operating machinery is to detect the one-button start signal. If the one-button start signal is detected for a first duration, the low voltage electricity on the operating machinery is controlled. If the one-button start signal is detected for a second duration, the high voltage electricity on the operating machinery is controlled. The second duration is longer than the first duration.

2. The durability testing method for a workpiece according to claim 1, characterized in that, The method of controlling the working machinery to increase or decrease power according to a preset time interval, and controlling the working machinery to operate after the power increase or decrease, includes: The operating machinery is controlled to increase its power to a second preset power within a second preset time period, and the operating machinery is controlled to work at the second preset power. After the working machine operates at the second preset power for a third preset time, the working machine is controlled to reduce its power to the third preset power within a fourth preset time, and then the working machine is controlled to operate at the third preset power.

3. The durability testing method for a workpiece according to claim 1, characterized in that, The performance parameters include motor performance parameters and pump / valve performance parameters; The motor performance parameters include: the state of charge of the motor's battery module, battery temperature, discharge current, maximum cell voltage, minimum cell voltage, insulation resistance, discharge capacity, charging capacity, motor control unit input voltage, motor control unit input current, motor control unit output current, motor control unit output speed, motor control unit output torque, and motor temperature. The pump and valve performance parameters include rotary pressure and hydraulic oil temperature.

4. The durability testing method for a workpiece according to claim 1, characterized in that, The determination of whether the lower high and lower voltage conditions are met includes: The state of charge of the motor's battery module and the temperature of the hydraulic oil are detected. When the state of charge is less than a preset percentage, and / or the hydraulic oil temperature is higher than a preset temperature, it is determined that the working machinery meets the low and high voltage electrical conditions.

5. The durability testing method for a workpiece according to any one of claims 1-4, characterized in that, After receiving the working mode selection instruction, the method further includes: When the working mode selection instruction indicates a manual operation mode, the machine is controlled to perform operations according to the operator's instructions.

6. A durability testing device for a workpiece, characterized in that, The workpiece includes a motor, a pump, and a valve, which are mounted on the working machinery. The durability testing device for the workpiece includes: The high-voltage module is used to control the high and low voltage electricity on the operating machinery; The testing module is used to switch the gear of the working machine to the target gear after the high and low voltage electricity is successfully connected, and to open the pilot handle to receive the working mode selection command; when the working mode selection command indicates the test mode, it performs a durability test on the motor, the pump and the valve. The high-voltage module is used to determine whether the conditions for switching between high and low voltage are met after the durability test is completed. If the conditions are met, the module controls the machine to switch between high and low voltage. The durability test performed on the motor, the pump, and the valve includes: The machine is controlled to perform operations based on preset power supply mode and preset speed supply mode; During the operation of the controlled machinery, the performance parameters of the motor, the pump, and the valve are detected. Based on the performance parameters, the durability test results of the motor, the pump, and the valve are determined. The control of the working machinery to perform operations based on preset power supply mode and preset speed supply mode includes: The operating machinery is controlled to operate without movement at a first preset power level; After the inactive operation reaches a first duration, the operating machinery is controlled to increase or decrease power according to a preset time interval, and the operating machinery is controlled to work after the power increase or decrease. After repeating the power increase and decrease preset number of times, the operating machinery is controlled to reduce its power to the first preset power, and the operating machinery is controlled to operate without movement at the first preset power. The operating machinery is controlled to operate without movement at a first preset speed. After the inactive operation reaches the fourth preset time, the rotation speed of the working machine is controlled to be increased to the second preset speed, and the working machine is controlled to work at the second preset speed. After controlling the working machine to operate at the second preset speed for a fifth preset time, the working machine is controlled to reduce its speed to the third preset speed within a sixth preset time. The specific method for controlling the high and low voltage electricity on the operating machinery is to detect the one-button start signal. If the one-button start signal is detected for a first duration, the low voltage electricity on the operating machinery is controlled. If the one-button start signal is detected for a second duration, the high voltage electricity on the operating machinery is controlled. The second duration is longer than the first duration.

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