669 results about "Motor testing" patented technology

The invention relates to the technical field of motor testing, in particular to an online monitoring method and system for the health state of a carbon brush of a motor, and the method comprises the steps: determining a target operation load environment cluster of a target carbon brush at the current moment according to the pre-obtained load condition and operation environment condition of the target carbon brush in the current operation time period; screening out a reference operation time period; determining an abnormal loss factor and a potential abnormal wear feature vector of the target carbon brush at the current moment; according to the Lyapunov index of the vibration signal of the target carbon brush in the current operation time period and the temperature change and the current change of the target carbon brush in the current operation time period, determining a wear fault display possible feature vector; therefore, the health state of the target carbon brush at the current moment is determined. According to the invention, the potential abnormal wear condition of the target carbon brush at the current moment is considered, the health state of the carbon brush is monitored, and the timeliness of abnormal health state monitoring of the carbon brush is improved.

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 discloses a method for detecting a motor based on a Transformer model of a UMAP, relates to the technical field of motor testing, and particularly aims at motor sound data with a low signal-to-noise ratio. The method comprises the following steps: obtaining a shape (nframe, nmfcc) feature matrix; k kinds of UMAPs are obtained; splitting the feature matrix into nframe feature vectors of shapes (nmfcc, 1); respectively inputting each UMAP to obtain K * nframe trained UMAPs (Universal Matrix Access Points); all the feature vectors are input into each trained UMAP to obtain nframe shape (numapdim, 1) feature vectors, and the nframe shape (numapdim * K) feature vectors are spliced into a shape (nframe, numapdim * K) feature matrix; after mean value normalization, a classification result is obtained through a Transform model; redundant information in the features is removed through K UMAPs, and the precision is improved.

The invention discloses a motor comprehensive performance testing device and testing method, and relates to the technical field of motor testing, the motor comprehensive performance testing device comprises a motor clamping assembly, a testing assembly, a lifting assembly and an electrical cabinet, the motor clamping assembly is used for clamping and fixing a testing motor, the testing assembly is used for carrying out load and torque testing on the testing motor, and the lifting assembly is used for lifting the testing motor. The lifting assembly is arranged below the testing assembly and used for adjusting the position of the testing assembly when the testing motor is connected with a load, and a processing terminal used for receiving and processing testing data and a control terminal used for controlling the motors are arranged in the electrical cabinet. An alignment camera is arranged in the testing assembly to perform center shaft alignment on the output end of the testing motor and the coupler, the height difference is compensated through the lifting assembly, so that the output shaft of the testing motor is aligned with the center shaft of the coupler, the alignment speed is increased, the load mounting module can automatically increase or reduce the load, and the load is automatically locked during rotation. Special fixing is not needed, and convenience and rapidness are achieved.

The invention relates to the technical field of motor testing, and discloses an intelligent diagnosis system and method for a brushless motor of a vehicle water pump, and the method comprises the steps: collecting an actually-measured first vibration mean value, and obtaining an estimated second vibration mean value of a brushless motor to be tested at the r + v rotating speed based on the actually-measured first vibration mean value; acquiring an actually measured second vibration mean value of the brushless motor to be measured at the r + v rotating speed, and judging whether the brushless motor to be measured has abnormal performance according to the estimated second vibration mean value and the actually measured second vibration mean value; the process is repeated until abnormal performance occurs or r is equal to R, circulation is ended, the temperature reference value, the temperature mean value and the electrical measurement value are input into a first machine learning model, and an electrical correction value is obtained; intercepting an abnormal wave band in the actual electrical oscillogram, and inputting the abnormal wave band into a second machine learning model in an image form to obtain a fault type of the brushless motor to be tested; according to the invention, the fault type of the brushless motor can be diagnosed with high accuracy.

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 an industrial robot motor fault early warning method, and relates to the technical field of motor testing and state monitoring, and the method comprises the steps: introducing a kurtosis-based real-time statistical feature to adaptively adjust the noise amplitude and the decomposition frequency, enabling noise-added empirical mode decomposition to dynamically reconfigure parameters along with the working condition of a motor, and enabling the noise-added empirical mode decomposition to be more accurate. Stable intrinsic mode function components can still be obtained when the impact load frequently changes; a screening coefficient formed by three types of sub-indexes of correlation, an energy ratio and impact sensitivity is utilized to realize automatic elimination of noise dominant components, and the problems of modal aliasing and residual noise are effectively relieved; on this basis, target components are reconstructed and fractal box dimensions are extracted, so that the features still have strong distinguishing ability in the face of transient abrupt change and multi-scale roughness, and the sensitivity to early weak faults is enhanced; and vibration signal dynamic time warping with current as a time reference is further combined with multi-sensor feature fusion.

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 utility model relates to the technical field of motor testing, and discloses a testing platform convenient for fixing a motor, which comprises a base, a fixing structure is arranged in a testing frame, and the fixing structure comprises a cavity, an opening, a supporting plate, a bottom plate, a moving rod, a reset spring, a fixing plate, a first air bag, a second air bag and a breather pipe. Then, a bottom plate is driven to move downwards under the extrusion of the weight of a motor, and at the moment, a pressing plate moves downwards to extrude the upper end of a second air bag, so that the upper end of the second air bag is extruded and deformed, and air in the second air bag is introduced into two groups of first air bags through two groups of ventilation pipes; the two sides of the motor are fixed through expansion of the two first air bags, so that the device is convenient to use, the situation that when the motor is clamped, a motor shell is prone to being damaged by friction due to excessive movement is avoided, and anti-slip strips are arranged on the side walls of the first air bags, so that the supporting stability of the side walls of the motor is further improved.

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 utility model is suitable for the technical field of motor testing, and provides a motor simulation testboard, which comprises a base, the top surface of which is provided with a test box; the fixing assembly comprises a support, a lifting seat is slidably arranged at the support, a top pressing plate is elastically connected to the lower portion of the lifting seat, two sliding seats are slidably arranged on the bottom face of the lifting seat, first connecting rods are rotatably arranged between the sliding seats and the top pressing plate, gears are rotatably arranged below the lifting seat, racks are arranged on the sliding seats, and rotating shafts are rotatably arranged at the two ends of the support. Sleeves are rotatably arranged at the two ends of the lifting base and slidably arranged on rotating shafts in a sleeving mode, driving bases are arranged on the rotating shafts, driven bases are elastically connected to the lower portions of the driving bases, two side pressing plates are slidably arranged on the base at the bottom end of the support, and second connecting rods are rotatably arranged between the side pressing plates and the driven bases. Therefore, according to the utility model, the motor can be fixed in multiple directions, a good fixing effect is ensured, the motor fixing device can be suitable for various motors with different sizes, and the use cost can be reduced.

The present invention relates to the field of motor testing technology, and proposes an intelligent comprehensive performance testing platform for magnetic levitation high-speed permanent magnet synchronous motors, including: an electrical performance index testing module for detecting the electrical performance of magnetic levitation motors; a dynamic characteristic index testing module for detecting the corresponding change capability during the operation of magnetic levitation motors; a process control module for controlling the detection equipment and automatically switching the test links; a data analysis and diagnosis module for analyzing and diagnosing the data obtained from the electrical performance index test and the dynamic characteristic index test, wherein the dynamic characteristic index is analyzed and diagnosed by a nonlinear autoregressive neural network model with external input. Through the above technical solution, the problem of complicated test items in the prior art, which requires frequent changes and connections to multiple test equipment, is solved. This process is not only time-consuming and labor-intensive, but also greatly increases the workload of testers.

The invention relates to the technical field of leather detection, and discloses simulated leather wear resistance testing equipment which comprises a bottom plate, a servo motor; testing the leather; the regulation and control assembly is used for regulating and controlling the contact pressure of the tested leather; the positioning assembly is used for positioning the pressure of the tested leather; the testing assembly is used for carrying out cyclic fatigue wear resistance testing on the tested leather; and the circulating assembly is used for driving the regulation and control assembly to do circulating friction motion on the tested leather. According to the simulated leather wear resistance testing equipment, through mutual combination of the arranged circulating assembly and the regulating assembly, circulating left-right contact type friction on leather can be achieved, so that the wear resistance of the leather is simulated and tested, and the whole device achieves dual-environment testing on the leather through linkage of the testing assembly, so that comparison testing can be achieved, and the testing efficiency is improved. Synchronous difference testing is realized, so that wear resistance testing of the leather in a trial production stage is realized, the complex environment of testing is improved, and the accuracy of testing data of the leather is improved from the side.

The invention discloses a nanocrystalline relay withstand voltage test device, and relates to the technical field of relay detection. The conveying device comprises a conveying frame, gear shafts are rotationally arranged at the two ends of the conveying frame, a gear belt is wound around the two gear shafts in a transmission mode, and the end of one gear shaft is connected with a first motor arranged on the conveying frame; the testing mechanism comprises a mounting frame fixedly arranged on the transmission frame, and a withstand voltage tester is arranged on the mounting frame; the relay performs assembly line type transmission detection through the toothed belt, the probe rod, the first spring and the sleeve form an elastically telescopic probe structure, and the probe structure ascends and descends through the electric push rod, so that the probe rod can be effectively contacted with the relay for detection, the probe rod can be prevented from being broken, and meanwhile, the detection efficiency is improved. Through the protection of the quick-separating vibration-preventing mechanism, the feeler lever can be quickly lifted and separated after the detection is completed, vibration caused by elastic stretching and retracting is avoided, electric arc is avoided, and smooth continuous detection is ensured.

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 invention discloses a load simulation test device for a permanent magnet motor, which belongs to the technical field of motor testing and comprises a test board, a mounting table is mounted on the test board, the permanent magnet motor is mounted on the mounting table, and a load test box is mounted at the top, close to the permanent magnet motor, of the test board. A controller is installed at the top, close to the load test box, of the test board, an air cylinder is arranged to drive a movable rod to move, and when the movable rod moves, an end cover plate can be driven to rotate through cooperation of a longitudinal limiting groove, a spiral limiting groove, a fourth gear, a second tooth groove, a limiting block and other parts; when the end cover plate rotates, a guide rod can be driven to move through cooperation of an inclined extrusion groove and a sliding groove, when the guide rod moves, a first magnet can be driven to be close to or away from a second magnet to adjust the loading force of the permanent magnet motor, and the loading force of the permanent magnet motor can be conveniently adjusted according to needs.

The utility model relates to the technical field of motor testing, in particular to a motor durability testing device which comprises a shell and a rotation resistance adjusting assembly, the rotation resistance adjusting assembly is arranged in the shell, and the rotation resistance adjusting assembly comprises a friction block, an extrusion block, a guide rod, a threaded sleeve, a supporting plate, a threaded rod and a first gear. The sides, close to the left wall and the right wall of the shell, of the friction blocks are connected with extrusion blocks, the middles of the sides, away from the friction blocks, of the extrusion blocks are connected with elastic blocks, and the sides, away from the extrusion blocks, of the elastic blocks are connected with threaded sleeves. According to the technical scheme, the load of the motor during working can be adjusted, so that the durability of the motor under different loads can be conveniently detected by equipment, meanwhile, the cooling structure is arranged, the load structure can be cooled, and the situation that the detection effect of the equipment is affected due to the fact that the load is excessively abraded in the high-temperature state is prevented.

The utility model discloses a thermal protector temperature testing device which comprises a testing assembly, a control panel and a wind wheel motor, the testing assembly comprises a wind barrel, a barrel cover assembly, an air duct basin, a centrifugal wind wheel and a socket frame, the socket frame is provided with conductive clamping pieces used for being electrically connected with a thermal protector, and the conductive clamping pieces are uniformly distributed in the circumferential direction. The barrel cover assembly covers the air barrel, the centrifugal wind wheel is arranged on the lower side of the air duct basin, a heating pipe is arranged on the outer side of the centrifugal wind wheel, the wind wheel motor is in driving connection with the centrifugal wind wheel, the conductive clamping piece is arranged above the air supply duct correspondingly, a ventilation opening is formed in the bottom of the air duct basin, and the position of the air suction end of the centrifugal wind wheel corresponds to the ventilation opening. A temperature sensor is arranged on the lower side of the socket frame, on-off indicating lamps are arranged on the control panel, the conductive clamping pieces are electrically connected with the corresponding on-off indicating lamps respectively, and the control circuit is electrically connected with the temperature sensor and the heating tube. The temperature testing device for the thermal protector is beneficial to improving the working efficiency and improving the effectiveness of quality inspection.

The invention relates to the technical field of frameless motor testing, and discloses a frameless motor torque test bench which comprises a supporting platform, a rotating pipe is rotatably arranged on the supporting platform, a magnetic powder brake and a torque measuring instrument are arranged on the rotating pipe, one end of the rotating pipe is fixedly connected with a first electric push rod, and the other end of the rotating pipe is fixedly connected with a second electric push rod. The output end of the first electric push rod is fixedly connected with a flange; the first clamp mechanism is used for clamping and fixing the inner rotor frameless motor and can transmit torque generated when a rotor of the inner rotor frameless motor rotates to the rotating pipe. The adjusting mechanism is used for driving the first clamp mechanism to slide along the supporting platform; the second clamp mechanism is arranged on the supporting platform and located on the side, away from the rotating pipe, of the first clamp mechanism, and the second clamp mechanism is used for clamping and fixing the outer rotor frameless motor and can transmit torque generated when a rotor of the outer rotor frameless motor rotates to the rotating pipe. And the flexibility requirements of different scenes are met.

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 discloses a motor testing device for a robot, and relates to the technical field of motor testing for robots, and the motor testing device comprises a control cabinet, a testing platform, a locking device, a torque rotating speed sensor, a shaking simulation part, a load testing group and an adjusting part. Efficient detection of the motor for the robot with the body is achieved through cooperation of the shaking simulation component, the load testing assembly and the adjusting component, the shaking simulation component drives the motor to shake, the amplitude is changed under the action of the adjusting component, the stability of the motor is detected by simulating the bumping state, and the load testing assembly applies variable friction resistance. Loads are increased or decreased through the adjusting part, the actual use condition is flexibly simulated, the adjusting part can synchronously or separately adjust the shaking amplitude and the resistance application size, the complex environment is accurately simulated, shaking and load testing are fused, the testing convenience and accuracy are improved, the motor quality is efficiently controlled, and potential safety hazards of the motor for the robot are found in advance.

The invention relates to the technical field of motor testing devices, and provides a propeller motor load characteristic simulation testing device, which comprises a bracket (10), a turntable (20), a plurality of electromagnets, a load motor (50) and a detector (40), the turntable (20) is arranged in the bracket (10), and the propeller motor (100) can drive the turntable (20) to rotate; the electromagnets are used for providing radial force load, axial force load and unbalanced bending moment load for the output shaft; the load motor (50) is used for applying torque to the output shaft; the detector (40) is used for detecting the radial force load, the axial force load, the unbalanced bending moment load and the torque of the output shaft. The propeller motor load characteristic simulation test device can simultaneously, independently or compositely test the radial force load, the axial force load, the unbalanced bending moment load and the torque of the output shaft of the propeller motor (100), and multi-dimensional simulation of the load of the propeller motor is realized.

The utility model discloses automatic motor parameter testing equipment, which comprises a testing rack, an instrument rack and a tested motor, and is characterized in that the testing rack is provided with a power mechanism, a power transmission mechanism, a shaft tail bearing seat and a jig mandrel; the power mechanism comprises a power shaft and a power assembly. The power transmission mechanism comprises a transmission shaft and an electromagnetic brake. One end of the jig mandrel is rotationally connected with the shaft tail bearing seat, and the other end of the jig mandrel is connected with the transmission shaft; a jig mounting seat is arranged on the outer side of the jig core shaft, and a tested rotor is connected with the jig core shaft; an industrial control computer, an instrument assembly and a printer are arranged on the test rack, and the instrument assembly comprises a gauss meter, an LCR tester, a digital oscilloscope, a power analyzer and an alternating current programming power supply. According to the utility model, parameters such as inductance, induced voltage, magnetic flux and the like of the motor can be tested and recorded automatically, reports are generated, the production cost is reduced, the detection speed and precision are improved, and the detection result is accurate and reliable.

The utility model provides a rotary transformer simulation device, which is applied to the technical field of motor testing, and comprises a main controller and an input signal conditioning module, the input end of the main controller is connected with a first input signal, and the output end of the main controller outputs a first output signal through a first output signal module; outputting a second output signal through a second output signal module; the first output signal module comprises a digital-to-analog converter I and an output signal conditioning module I, and the second output signal module comprises a digital-to-analog converter II and an output signal conditioning module II; the input signal conditioning module receives a second input signal and then processes the second input signal, the processed signal is respectively transmitted to the main controller, the digital-to-analog converter I and the digital-to-analog converter II, and the second input signal is an excitation signal EXC output by the motor control driving unit. The device is small in size, light in weight and low in cost, can be suitable for a large-scale production environment, does not have the problems of mechanical wear, aging and the like, and is relatively low in maintenance cost.

The invention relates to the technical field of motor testing, in particular to an electromechanical equipment fault diagnosis system and method based on machine learning, and the system comprises a high-frequency signal injection module which injects a high-frequency signal in the range of 10 kHz to 50 kHz into a motor through a power supply line, analyzes the electromagnetic response of the signal, and obtains electromagnetic parameter monitoring data; and based on the electromagnetic parameter monitoring data, statistical characteristics are extracted and pattern recognition is carried out, and an early fault characteristic signal is generated. According to the invention, through high-frequency signal injection and differential signal amplification, early recognition and accurate positioning of motor faults are realized. By injecting high-frequency signals, changes in electromagnetic parameters can be captured, which often occur prior to physical fault performance. Differential amplification further enhances the ability to extract useful signals from these small changes, which can be identified and responded before the fault develops to a more serious stage.

The utility model discloses a motor twin trawling test structure with angle compensation, which comprises a test loading table, a loading motor is fixedly mounted on the test loading table, a position-adjustable support plate is mounted on the test loading table, and a tested motor is mounted on the support plate; an output shaft of the loading motor is provided with a first half coupling and a second half coupling connected to the first half coupling, and a torque sensor is arranged between the first half coupling and the second half coupling; an output shaft of the tested motor is inserted with an outer spline shaft, the outer spline shaft is connected with a third half coupling, the second half coupling and the third half coupling are both provided with switching structures, and a universal coupling is installed between the two switching structures; the device can be suitable for motor testing of the internal spline shaft and has certain angle compensation.

The invention relates to the technical field of linear motor testing, in particular to a double-lead-screw synchronous driving type linear motor testing platform which comprises a testing table, a dispatching rack is arranged at the upper end of the testing table, a touch display screen controller is arranged at the front end of the dispatching rack, and a to-be-tested linear motor is arranged between the testing table and the dispatching rack. A connector is arranged below the dispatching rack, one end of a tension and pressure sensor is fixedly installed on the side face of the connector, a slide carriage is fixedly installed at the other end of the tension and pressure sensor, the testing platform further comprises a multi-testing mechanism and a switching connecting mechanism, and the multi-testing mechanism further comprises a magnetomotive testing assembly, a double-lead-screw testing assembly and a pneumatic testing assembly. The loading force provided by the magnetomotive test assembly is used for testing the linear motor to be tested, the influence of friction force can be effectively reduced, but the thrust is not stable enough, and the method is suitable for testing the linear motor for conveying light goods.

The invention relates to the technical field of oil and gas resource drilling tools, in particular to a variable-diameter intelligent underground turbine generator test board which comprises a generator fixing module, a magnetic ring clamping module and a driving digital display module. The generator fixing module comprises a generator, a fixing support, a pushing and clamping sliding block, a lead screw motor and a pushing and clamping lead screw nut. The magnetic ring clamping module comprises a magnetic ring, a clamping sliding block, a clamping lead screw nut, a clamping lead screw, a large bevel gear, a small bevel gear, a bevel gear transmission shaft, a transmission gear, a driving gear ring, a hexagonal stud, a hollow gear motor, a hollow connecting shaft, a tapered roller bearing set, a bearing upper base, a large nut, a bearing lower base, a hollow belt wheel, a rear bearing, a front bearing and a middle shell. The device comprises a thin bearing pack, a clamping base body, an outer bearing, an outer bearing base body, an inner bearing and a rack, and the driving digital display module comprises a belt wheel motor, a controller, a power supply and a power analyzer. Through the intelligent variable-diameter clamping device, underground turbine generators of different sizes and powers can be tested, the application range is wider, and the working performance is more stable.

A motor prototype testing tool comprises a base, an adjustable clamping mechanism and a driving connection assembly. 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, and the driving connection assembly comprises a universal coupling and a torque sensor mounting seat; a detachable cooling system is arranged at the bottom of the base and comprises a heat dissipation fan and a flow guide cover, and the outlet direction of the flow guide cover faces heat dissipation holes of the motor prototype. According to the motor prototype testing tool, rapid positioning is achieved through the symmetrical clamping jaws driven by the two-way lead screw, the universal coupling and the testing interface module are matched, and the compatibility problem of multi-model motor testing is effectively solved.

The utility model relates to the technical field of motor testing, in particular to a motor axial force eccentricity testing device, which comprises a base, a stator assembly, an end cover, a bushing, a rotor assembly, a rotating shaft and an axial force eccentricity sensing assembly, the base is provided with a cavity, the rotor assembly is arranged in the cavity, the end cover is provided with a placement cavity, and the placement cavity is opposite to the cavity. The axial force eccentric induction assembly is arranged on the containing cavity, a through hole is formed in the containing cavity, the lining is arranged on the through hole and connected with the axial force eccentric induction assembly, the rotor assembly is arranged in the stator assembly, one end of the rotating shaft is connected with the rotor assembly, the other end of the rotating shaft penetrates through the lining, the lining is provided with a bearing, and the rotating shaft is rotationally arranged on the bearing. According to the utility model, the rotating shaft rotates at a high speed to provide axial eccentric force for the axial force eccentric sensing assembly, so that the force test of axial eccentricity is realized. The eccentric force under different rotating speed conditions is sensed through the gravity sensor, and the testing precision is high.