481 results about "Motor test" patented technology

The invention relates to the technical field of motor state monitoring and intelligent fault diagnosis, in particular to a motor test and diagnosis system and method based on multi-data acquisition, and the system comprises a multi-mode sensing array module, a heterogeneous data fusion module, a coupling feature mining module and a migration diagnosis decision module. Wherein the multi-mode sensing array module is used for collecting mechanical vibration time domain signals, temperature field space distribution data and near-field electromagnetic radiation spectrums of a motor; the heterogeneous data fusion module is used for generating a time-frequency matrix, a thermal field characteristic matrix and fundamental frequency harmonic energy distribution characteristics; the coupling feature mining module is used for generating a comprehensive diagnosis factor; and the migration diagnosis decision module is used for constructing a feature mapping network based on meta-learning and outputting a fault type and a confidence score. According to the invention, through multi-modal feature fusion and a metalearning-based migration diagnosis mechanism, high-precision identification and cross-model adaptive diagnosis of multi-source fault information under a complex working condition of the motor are realized.

The invention relates to the technical field of motor test equipment, in particular to a high-efficiency noise reduction and shock absorption soundproof box, two supporting and lifting mechanisms are arranged on a machine table, and a test box main body is arranged on the two supporting and lifting mechanisms; a test base is arranged below the test box main body, and the test base can horizontally move on the machine table; a motor test frame is arranged on the test base, the motor test frame is used for placing a motor and electrifying the motor for operation, the support lifting mechanism can lift the test base in parallel, so that the test base and the test box main body form a sound insulation test space, and the running motor completes noise and vibration tests in the sound insulation test space. Compared with the prior art, the high-efficiency noise reduction and shock absorption soundproof box can realize seamless joint with an automatic production line, the test efficiency is improved, the labor can be saved, and the higher automation degree is realized.

The invention discloses a variable frequency motor load testing device and method, and relates to the technical field of variable frequency motor testing, and the device comprises a motor testing installation platform, a fastening T-shaped bolt, two variable frequency speed regulation asynchronous motors of the same model, a drum-shaped coupler, two inverters, a rectifier, a three-phase voltage regulator, a frequency converter and an intermediate DC link. According to the invention, two frequency conversion speed regulation asynchronous motors of the same model are coaxially connected, and the power generation electric energy of the accompanying test motor is fed back to an intermediate direct current link through an inverter, so that the cyclic utilization of the electric energy and the dual-motor structural design are realized, complex load equipment does not need to be configured, and the fixed asset investment is reduced; for motors of different models, only corresponding accompanying test motors need to be replaced, the universality is improved, through voltage and current monitoring in an intermediate direct current link and motor rotating speed and torque parameter collection, and by combining a multi-dimensional performance evaluation model, precise evaluation of the motor load performance is achieved, the test efficiency is improved, and the strict test requirements are met.

The invention discloses a bearing voltage simulator for a motor bearing electro-corrosion test and an operation method, belongs to the technical field of motor bearing electro-corrosion, and solves the problems that the measurement precision is interfered by stray parameters, the bearing voltage is difficult to flexibly adjust, a motor test platform is complex to operate and low in efficiency, and the test cost is high in the prior art in a bearing electro-corrosion experiment method. And the deep research of the bearing electro-corrosion mechanism is restricted. The invention provides a bearing voltage simulator for a motor bearing electrocorrosion test, which is formed by sequentially and electrically connecting a Boost voltage regulating circuit, a three-phase bridge type inverter circuit and a bearing voltage high-frequency model, and can accurately reproduce the voltage waveform of a motor bearing through a specific operation method, realize on-line adjustability of parameters and assist in bearing electrocorrosion research. According to the invention, the voltage waveform of the motor bearing can be accurately reproduced, parameters are adjustable on line, and the electric stress of the bearing under different working conditions can be flexibly simulated. A reliable platform is provided for bearing electrocorrosion research, and research cost and experiment complexity are reduced.

The invention discloses a motor test bench system, which comprises a hardware system architecture and a software system architecture, wherein the hardware system architecture comprises a mechanical load and sensing unit, a centralized power supply and excitation unit, a data acquisition and control center and an upper computer system; the software system architecture comprises a unified data layer, an automatic control layer, a dynamic load regulation layer, a full-automatic test sequence layer, a man-machine interaction layer, a data analysis and report layer and a collaborative development interface; the problems that an existing test bench is single in signal collection, incomplete in information collection and poor in data synchronism; the load cannot be dynamically changed in real time; and high-order test data results are poor in visualization and cannot be directly converted into test reports.

The invention discloses a motor testing device and a calibration method, a testing method and equipment thereof, and relates to the technical field of motor performance tests.A control assembly of the motor testing device is in communication connection with a torsion calibration device under the conditions that the motor testing device is in communication connection with the torsion calibration device, and a test calibration end is in transmission connection with the torsion calibration device; controlling the torque calibration device to output torque to the test calibration end, acquiring a torque value detected by the torque detection piece when the output torque of the torque calibration device reaches target calibration torque, and calibrating the torque detection piece according to a difference value between the detected torque value and the target calibration torque; under the condition that the motor testing device is electrically connected with the to-be-tested motor and the testing calibration end is in transmission connection with the to-be-tested motor, the controllable load part is controlled to output preset load torque to the torsion shaft and output preset electrical parameters to the to-be-tested motor, and torques detected by the torque detection part under different preset electrical parameters are obtained; according to the invention, the precision of motor small torque testing can be improved.

The utility model provides an engine test section assembly welding fixture, and relates to the technical field of welding fixtures, the engine test section assembly welding fixture comprises a base, one side of the base is provided with a positioning device, one side of the base is provided with an adjusting device, the positioning device comprises a mandrel screw, the mandrel screw is fixedly connected with the base, and the adjusting device is connected with the mandrel screw. The positioning device comprises a base, a mandrel screw is arranged on the base, the surface of the mandrel screw is in threaded connection with a nut, the surface of the mandrel screw is sleeved with a conical ring, the surface of the nut is larger than the inner wall of the conical ring, and the side, close to the mandrel screw, of the base is fixedly connected with a limiting frame. The situation that positioning is difficult due to the fact that the parts are irregular in shape and complex in combination structure is reduced, convenience and adaptability are improved when personnel position the parts of different sizes and shapes, and then production efficiency is improved, production cost is reduced, and the part production cycle is shortened.

The present invention relates to a whole motor testing device, comprising a bearing platform, a detection platform and a rotating platform; the detection platform is telescopically installed below the bearing platform, the detection platform and the bearing platform are distributed in parallel, a through hole is provided at the center of the bearing platform, wherein the through hole is used for the telescopic movement of the rotating platform and the scanning probe, so as to facilitate the testing of the inside of the motor body, and a limiting groove is milled around the bearing platform near the through hole, and the motor body is placed on the limiting groove. The whole motor testing device controls the guide column to retract the detection platform, and under the action of the vertical plate, the connecting rod, the transmission plate, the second tooth and the first tooth, the scanning probe rotates while the lifting movement is performed, so as to more comprehensively scan and detect the inner edge of the motor body, thereby improving the detection efficiency and comprehensiveness of the motor body.

The utility model discloses a vertical motor test tool platform, which belongs to the technical field of test platforms and comprises an upper platform plate, a plurality of supporting plates are arranged at the bottom of the upper platform plate, a lower platform plate is arranged on one side of each supporting plate, a storage mechanism is arranged at the top of each lower platform plate, and a through hole is formed in the surface of each upper platform plate. A clamping mechanism is arranged in the through hole, and a first connecting mechanism is arranged at the top of the upper platform plate. The first electric telescopic rods in the through holes drive the arc-shaped plates to clamp the shaft extension sizes of the vertical motors of different sizes, so that the platform can be suitable for the vertical motors of different sizes, and then the clamping blocks are installed on the surface of the upper platform and the surface of the baffle through the bolts. And then an electric telescopic rod II in a clamping block drives a clamping plate to clamp the vertical motors with different sizes, so that the vertical motors can be tested more stably on the platform.

The invention relates to the technical field of motor test equipment, in particular to a multifunctional motor test operation system and method, and the method comprises the steps: a parameter detection module synchronously collects voltage, current, frequency, temperature, vibration, insulation resistance and DC resistance parameters, and converts the parameters into electric signals; the data processing module carries out amplification, filtering and analog-to-digital conversion on the electric signal to obtain a measured value; the storage module stores the measured value; and the report generation module automatically generates a test run report containing parameter analysis and qualification conclusions through a preset template based on the stored value. The parameter detection module synchronously collects various parameters and converts the parameters into electric signals, the data processing module processes the signals to obtain accurate measured values, the storage module stores data, and the report generation module automatically generates a test run report containing analysis and conclusion based on the stored values. The problems that the function is single, data integration is difficult and report generation is tedious are solved, the testing efficiency and accuracy are remarkably improved, and manual errors are avoided.

The invention provides a test system for a permanent magnet electric roller, and relates to the technical field of motor test. The system comprises a power supply subsystem, a measurement subsystem, a control subsystem and a special test bed for the permanent magnet electric roller, the power supply subsystem adopts a three-phase 380V power supply to supply power; the measuring subsystem forms a local area network by an industrial control computer, a server and various measuring instruments and meters; the control subsystem is composed of an industrial control computer and a controlled part, and centralized control and decentralized management are achieved through the industrial control computer. According to the invention, hardware measurement and control capabilities of equipment such as a computer and instruments and meters are combined together, and test control and data operation, analysis, processing and the like are realized through software, so that the performance detection capability of the permanent magnet electric roller is improved; whether the tested product meets the design requirement, the quality and the improvement target and direction can be judged according to the test result.

The invention discloses a high-power motor durability test bench, and particularly relates to the technical field of motor testing, and the high-power motor durability test bench comprises a test platform, an electric cylinder, a limiting roller and a vertical eccentric load test mechanism, wherein the vertical eccentric load testing mechanism comprises a guide sleeve disc, a guide groove, a raised line sleeve column, a hinge block, a connecting shaft, a sleeve shaft, a hinge shaft, a concave block, a sleeving sliding block and a sliding frame; a transverse eccentric load testing mechanism is arranged on one side of the sleeving slide block; and one side of the test platform is provided with a positioning butt joint assembly. Through the vertical eccentric load testing mechanism, the vertical eccentric load testing mechanism has the advantages that vertical eccentric load testing of different positions can be performed on the guide sleeve disc according to actual needs, and the testing application range is wider, so that the problem that eccentric load positions have different transverse positions and vertical positions in the actual use process is solved; therefore, the eccentric load test of different positions of the high-power motor is difficult to carry out according to actual needs, and the test limitation is large.

The utility model provides a motor test system. The motor test system comprises a Canon upper computer, a motor controller and a motor simulation machine. The Canon upper computer is connected with the motor controller, the motor controller is connected with the input end of the motor simulation machine, and the output end of the motor simulation machine is connected with at least one of the Canon upper computer and the motor controller; wherein the Canon upper computer is in communication connection with the motor controller, and the motor controller is connected with the motor simulation machine through a wire; and the motor simulation machine is in communication connection with the Canon upper computer. The Canon upper computer obtains a test result of the motor according to data in the control information module and the working information module, and a motor load rack does not need to be built, so that the detection cost is reduced; and meanwhile, the detection efficiency is improved through automatic testing of the Canon upper computer.

The invention discloses a motor test method, which comprises the steps that a target product is installed on a positioning carrying table, a forward rotation or reverse rotation excitation signal is provided for the target product, a pushing assembly abuts against a first sliding table, a damping part is connected between a bottom plate and a carrying plate, and at least two clamping parts are separated from the carrying plate; starting an audio acquisition assembly to detect noise, and abutting an accelerometer against the target product to detect vibration; controlling the accelerometer to stop vibration detection, and abutting against the carrier plate through at least two clamping pieces; abutting a displacement sensor against a rotating shaft of the target product, so as to detect the deflection of the shaft through the displacement sensor; a second sliding table is driven to move through a sliding table driving mechanism, so that the torque sensor is connected with a rotating shaft of the target product, and the hysteresis brake provides zero load; the torque is detected through the torque sensor, and the rotating speed is detected through the photoelectric sensor and the coded disc. According to the invention, multiple functions of the motor can be continuously detected.

The utility model discloses a new energy motor test bench, which belongs to the technical field of new energy motor test, and comprises a translation platform, a lifting platform, a lifting regulator, a clamping mechanism and a base, and a three-jaw chuck used for being sleeved on an output shaft of a motor product is arranged between the translation platform and the lifting platform. The axis of the three-jaw chuck and the axis of the butt joint end of the test equipment are parallel and located in the same vertical plane, and the three-jaw chuck is connected to the base in a lifting mode; an infrared emitter is fixedly installed on the outer side face of the three-jaw chuck, an infrared receiver located in the same vertical plane with the infrared emitter is arranged beside the butt joint end of the testing device, and the distance between the infrared receiver and the axis of the butt joint end of the testing device is equal to the distance between the infrared emitter and the axis of the three-jaw chuck. According to the utility model, the coaxiality standard is effectively provided, and the accurate butt joint of the new energy motor and the test equipment can be ensured; and a stroke control standard is provided for electric driving equipment such as a lifting regulator, and the control is simple and convenient.

The invention discloses motor testing equipment and a testing method, relates to the field of motor testing, and solves the problem that a motor manufacturer cannot perform deep testing on a motor, and the motor testing equipment comprises a no-load testing unit which is used for calculating iron core loss and mechanical loss of a to-be-tested motor according to no-load data, judging whether the no-load test of the to-be-tested motor is qualified by combining the iron core loss and the mechanical loss, if not, generating a no-load abnormal signal, and if yes, generating a no-load normal signal and entering the next test link; the performance test unit is used for judging whether the performance test of the to-be-tested motor is qualified or not according to the performance test, generating a performance abnormal signal if the performance test is not qualified, and generating a performance normal signal if the performance test is qualified and entering a next test link; and the precision test unit is used for judging whether the precision test of the test motor is qualified or not according to the precision data, generating a precision abnormal signal if the precision test is not qualified, and generating a precision normal signal if the precision test is qualified.

A dust injection system for engine testing and related methods are provided. The system includes a carrier pipe that defines a fluid flow path between an inlet and an outlet and an injection nozzle disposed within the carrier pipe between the inlet and the outlet. The injection nozzle receives a slurry comprising dust particulates and a carrier liquid, and injects the dust particulates and the carrier liquid into the fluid flow path. The carrier liquid is atomized and evaporates in the fluid flow path prior to the outlet to enable dried version of the dust particulates to exit the outlet.

The utility model discloses a rolling brush motor testing tool, which relates to the technical field of motor testing, and adopts the technical scheme that the rolling brush motor testing tool comprises a motor testing table, a motor testing device is arranged at the top of the motor testing table, a testing fixing seat is fixedly arranged at the top of the motor testing table, and a middle ring is fixedly arranged in the testing fixing seat; the rolling brush motor testing tool has the beneficial effects that the to-be-tested rolling brush motor is clamped and fixed through the plurality of clamping plates, so that the clamped to-be-tested rolling brush motor is located at the central position of the plurality of clamping plates, and the output ends of the to-be-tested rolling brush motors with different sizes can be always located at the coaxial position of the motor testing device and the motor penetrating groove; the motor testing device can accurately test motors of different sizes, the clamping plates are clamped in the middle area of the to-be-tested rolling brush motor, the purpose of preventing the clamping area from being close to the edge area of the to-be-tested rolling brush motor can be achieved, the situation that the clamping face falls off due to the fact that the clamping face is close to the edge in the testing process is prevented, and the testing efficiency is improved. And the stability during testing is improved.

The utility model relates to the field of push rod motor test, put forward a kind of push rod motor life test equipment, including base, the top of base is fixedly connected with support, the top of base is fixedly connected with recessed plate, the inner wall bottom top of recessed plate is fixedly connected with spring, the utility model drives first clamping plate, second clamping plate, third clamping plate, fourth clamping plate, threaded rod, threaded block, fixed plate, limit rod, connecting plate, recessed block etc. Assembly mutual cooperation by the driving force of motor, realizes the motor that starts to penetrate in hollow plate positive side, to drive the threaded rod rotation fixed in output shaft, threaded rod rotation drives the linear motion of threaded block in the circumference of limit rod in the circumference, in the detection process to push rod motor, prevent push rod motor from happening to shake, avoid the damage to staff and detection equipment, and simultaneously can detect multi-rod push rod motor.

The invention discloses a high overload pulse type motor torque loading system, including a torque loading device, a torque measuring device and a timing device; the torque loading device includes a synchronous generator, a motor to be tested, a variable resistor, a rectifier bridge, a coupling No. 1 and a coupling No. 2; the motor to be tested is connected to the synchronous generator through two couplings; the synchronous generator is connected to the AC side of the rectifier bridge, and the DC side of the rectifier bridge is connected in series with a variable resistor and a timing device to form a torque loading loop; when the timing device works within the peak torque holding time or the load torque holding time, the torque loading loop is closed or disconnected, and the motor to be tested bears the peak load torque or the small load torque. The invention can provide a large load that can be adjusted with high precision for the motor, the loading time can be accurately controlled, the torque response time is extremely short, and the dynamic pulse type loading of the motor is realized, the efficiency of the motor load test is improved, and the reliability of the motor test is increased.

The utility model relates to the technical field of test platforms, and discloses a servo motor test platform, which comprises a mounting seat, a storage groove is arranged at the upper part of the outer wall of the front end of the mounting seat, a servo motor is arranged at the bottom of the storage groove, and a temperature monitor is arranged at the upper part of the inner wall of the front end of the storage groove. When the servo motor test platform is used, the output end of the servo motor is connected with the coupling, the initial temperature and the end temperature are checked through the temperature monitor, and the servo motor is started to drive the coupling to rotate and drive the rotating column to rotate at the same time. A first load semi-ring and a second load semi-ring are placed on the outer wall of a connecting column, at the moment, a clamping block drives a limiting spring to compress under the action force, and when the clamping block coincides with a clamping groove, the limiting spring releases the action force to drive the clamping block to be clamped and matched with the clamping groove; and the first load semi-ring and the second load semi-ring can be conveniently and preliminarily limited.

The invention discloses a new energy motor test method based on temperature curve transformation, and the method comprises the steps: loading a new energy motor to a test bench, setting an environment control box corresponding to the new energy motor, and controlling the initial environment temperature; the new energy motor rotates to a rated rotating speed, the temperature in the environment control box is synchronously increased to 75-85 DEG C within 1-2 s, the temperature is kept for 2-3 s, simulation initial starting instant temperature rise is formed, and the rotating runout degree A of the motor is obtained through testing; reducing the temperature to 35-40 DEG C within 4-5 seconds, reaching a rated rotating speed, continuing for 2 hours to form simulated normal high-speed driving, and testing to obtain a motor run-out degree B; keeping 35-40 DEG C and 45-60% rated rotating speed for 10-15 seconds to form simulated decelerated driving, and testing to obtain a motor run-out degree C; the temperature is raised to 60-75 DEG C within 3-5 s, the rated rotating speed is 110-120%, simulated instantaneous acceleration is formed, and the motor runout degree D is obtained through testing; within 10-15 seconds, cooling to 25-35 DEG C, rotating the new energy motor to a rated rotating speed for 20-30 minutes, and after simulation acceleration is formed, running normally to obtain a motor runout degree E; and carrying out qualification judgment.

The utility model discloses an auxiliary tool for a motor test, which comprises a base and a cylinder, the cylinder is arranged in the base, connecting rods are arranged at two ends of the cylinder, a supporting rod is arranged at one end, far away from the cylinder, of each connecting rod, a pushing rod is arranged at one end, far away from the connecting rod, of each supporting rod, and a clamping block is arranged at one end, far away from the supporting rod, of each pushing rod. A rail block is arranged on the outer wall of the clamping block, a moving groove is formed in the position, corresponding to the clamping block, of the inner wall of the rail block, the rail block is fixedly connected with the top of the outer wall of the base, and the clamping block is slidably connected with the rail block. Through the arrangement of the air cylinder, the connecting rod, the supporting rod, the pushing rod and the clamping block, a worker can drive the air cylinder to drive the clamping block to move in the rail block, so that the motor is limited and fixed, the position of the clamping block is changed by driving the air cylinder, motors of different specifications can be clamped, and the working efficiency is improved. And the applicability of the product is enhanced.

The utility model relates to the technical field of motor testboards, and discloses a motor testboard with a buffer function, which comprises a workbench, a torque sensor and a load, a heat dissipation mechanism is fixedly arranged on one side of the upper end face of the workbench, and a buffer mechanism is fixedly arranged on one side of the middle of the upper end face of the workbench. A to-be-detected motor is clamped at the upper end of the buffer mechanism, the heat dissipation mechanism comprises a shell and a fence net, an upper groove is formed in the upper end face of the shell, and a wind shell is rotationally arranged between the inner wall of the front side and the inner wall of the rear side of the upper groove. According to the utility model, the rotating bidirectional threaded rod drives the two threaded blocks to get close to each other through threads, the two clamping arc plates clamp the motor to be detected, the motor to be detected is convenient to place, the support plate is arranged below the motor to be detected for supporting, and the spring damper is arranged below the support plate, so that the started motor to be detected can be buffered; and the to-be-detected motor can be placed more stably.

The utility model relates to motor test frock technical field, concretely is a kind of warm air motor whole machine test clamping frock, two clamping assemblies are symmetrically arranged in the both sides of clamping table, the clamping assembly includes empty slot, locating seat and advancing assembly, the advancing assembly is fixed in the both sides of clamping table, the locating seat is located in the inside empty slot and is slidably connected with empty slot, the upper end of locating seat is equipped with guide rail, compared with the frequent replacement of traditional frock clamp or manual adjustment clamping position, this clamping frock can realize the automation operation of height adjustment, preliminary clamping and self-adapting clamping by operating controller. From placing motor to complete clamping, the whole process time consumption is greatly shortened, it is convenient to operate, and it is shorter in time.

The utility model discloses a motor testboard which comprises a motor testboard body, a multi-station rotation adjusting table is arranged above the motor testboard body, a motor positioning seat is arranged above the multi-station rotation adjusting table, a mounting bottom plate is arranged at the bottom of the motor positioning seat, a clamping piece is arranged on the inner wall of the motor positioning seat, and the motor testboard body is provided with a clamping groove. Supporting frames are arranged on the two sides of the lower portion of the motor testing table body, a rack is arranged at the rear end of the motor testing table body, a testing assembly is arranged on the upper portion of the interior of the rack, a testing connector is arranged at the bottom end of the testing assembly, an air cylinder is arranged on the top of the rack, and balance moving plates are arranged on the two sides of the testing assembly. The four motor positioning seats are arranged above the multi-station rotary adjusting table, the positions of the motor positioning seats can be easily replaced in a rotary mode, a plurality of motor positioning seats can be arranged, the space of each inch can be utilized to the maximum extent in a limited space, and the occupied space is saved.

The application discloses a kind of verification motor endurance test method and related equipment, it is related to vehicle motor test field, mainly to solve the lack of a more simple and real verification motor endurance method problem.The method comprises: based on the kind of target electric drive determines the high-low temperature drive endurance test parameter of target electric drive;Based on the high-low temperature drive endurance test parameter of the target electric drive determines the self-heating endurance test parameter in the self-heating process of target motor, wherein the self-heating process is the process that target motor is battery self-heating;In the process of carrying out high-low temperature drive endurance test to the target electric drive by the high-low temperature drive endurance test parameter, based on the self-heating endurance test parameter simultaneously carries out self-heating endurance test to the target motor.The application is used for verifying the test process of motor endurance.

The embodiment of the utility model discloses a motor testing fixture, and relates to the technical field of creepage distance detection. The motor testing fixture comprises a detection piece, the detection piece comprises a main body part and end parts which are connected with each other, the number of the end parts is multiple, the widths of at least two end parts are different, and the multiple end parts are used for detecting the distance. According to the motor testing fixture, through the arrangement of the plurality of end parts with different width dimensions, the end part matched with the position to be detected can be selected in a comparison mode, so that the creepage distance of the position to be detected can be obtained, the detection adaptability is high, time and labor are saved, and the production efficiency can be improved.

The invention discloses a test fixture for a motor prototype. The test fixture comprises a base, an adjustable clamping mechanism, a driving connection assembly and a test interface module, the base is provided with a transverse guide rail and a longitudinal positioning groove, the adjustable clamping mechanism is in sliding connection with the transverse guide rail through a sliding block, the driving connection assembly comprises a universal coupling and a torque sensor mounting seat, and the test interface module is integrated with an electrical quick-plug connector and a signal transmission port. According to the motor prototype test fixture, rapid positioning is achieved through the symmetrical clamping jaws driven by the bidirectional lead screws, and the universal coupling and the test interface module are matched, so that the compatibility problem of multi-model motor tests is effectively solved.

The utility model belongs to the field of motor test equipment, and provides a motor power torque test board which comprises a workbench, a plunger pump, a water tank, a detection assembly and a control system. Wherein the plunger pump is mounted on the workbench; the water tank is connected to the plunger pump and can form water circulation through the plunger pump; the detection assembly comprises a torque sensor used for detecting the torque and a first coupling and a second coupling which are connected to the two opposite sides of the torque sensor. The torque sensor is connected to the power input end of the plunger pump through the first coupling and connected with the power output end of the to-be-tested target motor through the second coupling. The control system is in communication connection with the torque sensor and the target motor and used for controlling the target motor.