A test device for motor commutation switching

Abstract

The application relates to the technical field of motor testing, and specifically discloses a motor rectification switching test equipment, which comprises a shell, a controller, a test mechanism, a test station mechanism, a wiring mechanism, a mechanical arm and a test power supply; the test mechanism is arranged at the top right side of the shell; the test station mechanism is arranged in the left groove of the shell; and a plurality of the wiring mechanisms are arranged at the top end of the shell from left to right at intervals and located at the front side of the test station mechanism. The automation and precision of the installation process are realized, the manual operation strength and skill dependence are reduced, the equipment has good multi-specification adaptation capability, can cope with the installation requirements of different types of motors, does not need to frequently adjust the equipment structure, and through automatic and rapid positioning and butt joint of the motor and the power supply line, the accurate butt joint of the test component and the motor is guaranteed from the installation link, the authenticity and reliability of subsequent test data are laid a foundation, and the test preparation period is shortened.

Description

Technical Field

[0001] This invention relates to the field of motor testing technology, specifically to a test device for motor rectification and switching. Background Technology

[0002] Motor rectification switching test is a core test to verify the reliability, stability and safety of motor rectification system mode switching under different operating conditions. It is widely applicable to various motor products that rely on rectification power supply or bidirectional energy conversion, such as DC motors, brushless DC motors, and AC variable frequency motors. Its core content is to drive the rectification system to switch between rectification mode and inverter mode by simulating complex operating conditions such as light load, rated load, and sudden load addition / removal in actual motor operation. Simultaneously, key parameters such as voltage, current harmonics, speed fluctuation, and torque pulsation during the switching process are collected and analyzed in real time. This is used to evaluate the rectification switching timing accuracy, load adaptability, protection mechanism effectiveness and energy conversion efficiency. Ultimately, it provides data support for optimizing the rectifier system control logic and improving the stability and reliability of motor operation, while ensuring the safe operation and long-term service of the motor in actual applications.

[0003] Currently, in the field of motor rectification and switching tests, the inconvenience of motor installation has long been a problem. Specifically, traditional installation methods rely on manual handling and alignment, the installation process is cumbersome and time-consuming, the compatibility of motors of different specifications is poor, the installation positioning accuracy is difficult to guarantee, and during the installation process, improper wiring operations can easily lead to motor damage or misalignment of test components, which in turn affects test efficiency and the reliability of results. Summary of the Invention

[0004] The purpose of this invention is to provide a test device for motor rectification and switching, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a test device for motor rectification and switching, comprising:

[0006] The outer casing has a groove on its left side;

[0007] The controller is fixedly mounted on the front right side of the outer surface of the housing via a bracket;

[0008] The testing mechanism is located on the top right side of the housing;

[0009] The test station mechanism is located inside the left-side recess of the outer casing;

[0010] A wiring mechanism, wherein there are several wiring mechanisms, which are spaced apart from left to right at the top of the housing and located in front of the test station mechanism;

[0011] A robotic arm is mounted on the top of the housing and located to the right of the wiring mechanism; the robotic arm is electrically connected to the controller.

[0012] The test power supply is installed at the top of the housing and on the left side of the wiring mechanism. The test power supply and the controller are electrically connected.

[0013] Preferably, the test station mechanism includes: a vertical frame, a second limiting component, a bracket, a first electric telescopic rod, and an electric scissor lift platform; the vertical frame is embedded in the rear side of the groove inner wall of the outer shell along the vertical direction; there are two second limiting components, which are respectively installed at the left and right ends of the front side of the vertical frame along the vertical direction; the bracket is fixedly installed in front of the limiting ends of the two second limiting components; the first electric telescopic rod is installed in the middle of the bottom end of the vertical frame along the vertical direction, and the telescopic end of the first electric telescopic rod is fixedly connected to the rear side of the bracket, and the first electric telescopic rod is electrically connected to the controller; the electric scissor lift platform is installed on the top of the bracket, and the electric scissor lift platform is electrically connected to the controller.

[0014] Preferably, the test station mechanism further includes: a base frame, roller frames, a transmission chain assembly, a track frame, limiting grooves, a rack, and a connecting pin; the base frame is fixedly installed on the top of the lifting end of the electric scissor lift platform in the left-right direction; there are two roller frames, which are respectively installed on the front and rear sides of the top of the base frame in the left-right direction; the transmission chain assembly is fixedly installed on the top of the base frame in the left-right direction via a mounting seat, and is located behind the inner side of the two roller frames; the track frame is engaged with the outer side of the two roller frames in the left-right direction; there are two limiting grooves, which are respectively opened on the front and rear sides of the outer side of the track frame in the left-right direction; the rack is fixedly installed behind the inner side of the track frame in the left-right direction; the connecting pin is fixedly installed in the middle of the rear side of the rack, and the rear end of the connecting pin is fixedly connected to the front side of the upper chain of the transmission chain assembly.

[0015] Preferably, the test station mechanism further includes: a tank frame, driven gears, transmission gears, a second motor, a drive gear, a linear groove, a support frame, a miniature electric telescopic rod, a connecting bracket, and a motor mounting base; the tank frame is fixedly installed on the upper inner side of the base frame in the left-right direction; there are two driven gears, which are rotatably installed on the left and right ends of the inner side of the tank frame via rotating shafts, and the upper parts of the two driven gears mesh with the lower left and right sides of the rack respectively; the transmission gear is rotatably installed on the inner side of the tank frame via rotating shafts, and the left and right sides of the transmission gear mesh with the left and right driven gears respectively; the second motor is installed on the outer left rear side of the tank frame, and the rotating end of the second motor extends into the inner side of the tank frame, and the second motor and the controller are electrically connected; the drive gear is installed on the rotating end of the second motor. At the front end, the drive gear and the left driven gear mesh; a straight groove is formed vertically through the top rear side of the track frame; a support frame is positioned above the outside of the connecting pin, and the inner front and rear rollers of the support frame are respectively inserted into the inner cavities of the front and rear limiting grooves in the left and right directions; there are two miniature electric telescopic rods, which are respectively embedded vertically at the left and right ends of the top rear side of the straight groove, and the miniature electric telescopic rods are electrically connected to the controller; there are two connecting brackets, which are respectively installed at the bottom of the telescopic ends of the left and right miniature electric telescopic rods, and the two connecting brackets can pass through the left and right sides of the inner cavity of the straight groove and engage with the top gap of the chain of the transmission chain assembly; the motor mounting base is fixedly installed in the middle of the upper surface of the straight groove.

[0016] Preferably, the second motor drives the drive gear to rotate, and the driven gears on both sides drive the rack and track frame to move horizontally along the roller frame through the transmission gear; in conjunction with the micro electric telescopic rod drive connecting card seat and transmission chain assembly alternately docking, so as to realize the extension / reset of the motor mounting base.

[0017] Preferably, the wiring mechanism includes: a housing, a connector, a heat sink, a cable restraint tube, and a plug holder; the housing is fixedly installed on the top of the outer casing in the front-to-back direction; the connector is embedded in the bottom rear side of the housing, and the connector is electrically connected to the test power supply; the heat sink is embedded in the top rear side of the housing, and the heat sink is electrically connected to the controller; the cable restraint tube is embedded in the rear inner side of the housing in the front-to-back direction; there are two plug holders, and the two plug holders are respectively installed at the upper and lower ends of the rear inner side of the housing.

[0018] Preferably, the lower insert holder has a bottom connecting component inside, and the upper insert holder has a top connecting component inside.

[0019] Preferably, the bottom connecting component includes: a first connector seat, a fixed seat, a first micro motor, a rotating seat, and a first connecting rod; the first connector seat is inserted into the inner cavity of the lower insert holder, and the first connector seat is electrically connected to the connecting plug; the fixed seat is fixedly installed at the inner bottom end of the housing and located on the rear side of the lower insert holder; the first micro motor is installed on the outer right side of the fixed seat, the rotating end of the first micro motor extends into the inner side of the fixed seat, and the first micro motor is electrically connected to the controller; the rotating seat is rotatably installed on the inner upper side of the fixed seat via a rotating shaft, the axis of the rotating seat is fixedly connected to the rotating end of the first micro motor, and the rotating seat is U-shaped; one end of the first connecting rod is rotatably installed on the inner upper side of the rotating seat via a bearing, and the other end of the first connecting rod extends into the interior of the lower insert holder and is rotatably connected to the inner bottom end of the first connector seat via a rotating shaft.

[0020] Preferably, the top connecting component includes: a second connector seat, a slot frame, a plug rod, a second micro motor, a second connecting rod, and a drive rod; the second connector seat is inserted into the inner cavity of the upper plug frame, and the second connector seat and the connecting plug are electrically connected; the slot frame is fixedly installed inside the upper part of the housing and located on the rear side of the upper plug frame; the plug rod is inserted into the interior of the slot frame, and the bottom end of the plug rod is fixedly connected to the top end of the second connector seat; the second micro motor is installed on the upper rear side of the slot frame, and the second micro motor and the controller are electrically connected; one end of the second connecting rod is rotatably installed on the inner side of the top end of the plug rod via a rotating shaft; one end of the drive rod is fixedly installed on the left side of the rotating end of the second micro motor, and the other end of the drive rod is rotatably connected to the left side of the other end of the second connecting rod via a rotating shaft.

[0021] Preferably, the robotic arm feeds the motor cable end into the cable constraint cylinder of the wiring mechanism along a preset path. The controller simultaneously starts the first micro motor and the second micro motor. The first micro motor pushes the lower first connector seat to rise along the insertion cylinder frame through the rotating seat and the first connecting rod. The second micro motor pulls the upper second connector seat to fall along the insertion cylinder frame through the drive rod and the second connecting rod. The two motors clamp the cable end in opposite directions and form a stable electrical connection path.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The second motor drives the drive gear to rotate. The left driven gear rotates synchronously under the rotational force of the drive gear, and the right driven gear rotates synchronously under the transmission gear. The rack moves to the left or right under the action of the driven gears on both sides. The rack drives the limiting groove to move horizontally to the left or right along the outer side of the front and rear roller frames. At the same time, the rack drives the connecting pin, and with the cooperation of the connecting pin, drives the chain inside the transmission chain assembly to move to the left or right. The chain inside the connecting pin rotates circumferentially under the action of the sprocket. The two miniature electric telescopic rods on both sides drive the corresponding positions of the connecting brackets to insert into the chain gap of the transmission chain assembly. The internal chain of the transmission chain assembly, in cooperation with the connecting bracket and the miniature electric telescopic rod at the corresponding position, drives the support frame, causing the internal rollers of the support frame to move horizontally to the left or right along the inner cavity of the limiting groove. This allows the support frame drive motor mounting base to extend from the track frame to the left or right. After the operator installs the motor to be tested inside the motor mounting base, the first electric telescopic rod drives the bracket to move upward to the designated height position. The electric scissor lift platform raises itself to lift the upper base frame and the motor to be tested to the same horizontal height position as the test mechanism. The track frame and support frame extend horizontally to the right to the designated position and dock with the test mechanism.

[0024] 2. The robotic arm sequentially grips and picks up the internal connecting cables of the motor under test, inserting the ends of the cables into the cable constraint cylinders of the wiring mechanism. The cables then pass through the cable constraint cylinders into the housing. At the corresponding positions, the first micro motor in the wiring mechanism drives the rotating seat to rotate upwards inside the fixed seat. The rotating seat, in conjunction with the first connecting rod, drives the first connector seat, causing it to move upwards along the lower insert frame. The second micro motor drives the drive rod to rotate, which in turn drives one end of the second connecting rod downwards, while the other end of the second connecting rod drives the insert rod, causing the insert rod to move along the inside of the slot frame. Moving downwards, the insertion rod drives the second connector to move downwards along the inside of the insertion sleeve. The first and second connectors clamp the connection cable terminals from below and above, respectively, forming an electrical connection path. The controller controls the test power supply to switch the test motor between rectification mode and inverter mode according to the preset test procedure. At the same time, it monitors the voltage, current harmonics, and power of the test motor. The speed sensor collects the rotation status of the test motor in different modes and states. With the cooperation of the speed sensor, the brake controls the speed and torque of the test motor's rotating end, thereby simulating the actual load conditions of the motor.

[0025] In summary, this invention automates and refines the installation process, reduces the intensity of manual operation and skill dependence, possesses excellent multi-specification adaptability, can meet the installation requirements of different motor models, eliminates the need for frequent adjustments to the equipment structure, and ensures precise connection between the test components and the motor through automatic and rapid positioning and docking of the motor and power cord. This lays the foundation for the authenticity and reliability of subsequent test data, shortens the test preparation cycle, and improves the efficiency of batch testing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 for Figure 1 Exploded view of the testing facility;

[0028] Figure 3 for Figure 1 Exploded view of the test station mechanism;

[0029] Figure 4 for Figure 3 Enlarged view of point A;

[0030] Figure 5 for Figure 1 Exploded view of the wiring mechanism;

[0031] Figure 6 for Figure 5 Enlarged view of point B;

[0032] Figure 7 for Figure 5 Enlarged view of point C.

[0033] In the diagram: 1. Outer casing; 2. Controller; 3. Test mechanism; 31. First limit assembly; 32. Lead screw assembly; 33. First motor; 34. Mounting base plate; 35. Rotation sensor; 36. Brake; 4. Test station mechanism; 41. Vertical frame; 42. Second limit assembly; 43. Bracket; 44. First electric telescopic rod; 45. Electric scissor lift; 46. Base frame; 47. Roller frame; 48. Transmission chain assembly; 49. Track frame; 410. Limit groove; 411. Rack; 412. Connecting pin; 413. Groove frame; 414. Driven gear; 415. Transmission gear; 416. Second electric... 417. Drive gear; 418. Straight groove; 419. Support frame; 420. Miniature electric telescopic rod; 421. Connecting card seat; 422. Motor mounting base; 5. Wiring mechanism; 51. Housing; 52. Connecting plug; 53. Radiator; 54. Cable restraint tube; 55. Insert tube frame; 56. First connector seat; 57. Fixed seat; 58. First miniature motor; 59. Rotating seat; 510. First connecting rod; 511. Second connector seat; 512. Slot frame; 513. Insert rod; 514. Second miniature motor; 515. Second connecting rod; 516. Drive rod; 6. Robotic arm; 7. Test power supply. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1-7This invention provides a technical solution: a test device for motor rectification and switching, comprising: a housing 1, a controller 2, a test mechanism 3, a test station mechanism 4, a wiring mechanism 5, a robotic arm 6, and a test power supply 7; a groove is provided on the left side of the housing 1; the controller 2 is fixedly installed on the front right side of the outer surface of the housing 1 by a bracket, the controller 2 is an industrial-grade PLC controller with detachable adjustment function for easy maintenance and repair, the controller 2 internally stores multiple sets of rectification and switching test programs for different types of motors, supports multi-channel digital and analog signal acquisition, can receive feedback signals in real time, and accurately output control commands to each execution component, the controller 2 is equipped with a touch screen display, supports real-time viewing of test parameters, program editing and fault alarm prompts, ensuring the automated and accurate operation of the test process; the test mechanism 3 is located on the top right side of the housing 1; the test station mechanism 4 is located inside the groove on the left side of the housing 1; the number of wiring mechanisms 5 is several, which are spaced from left to right at the top of the housing 1 and located in front of the test station mechanism 4; the robotic arm 6 is installed on the top of the housing 1 and located to the right of the wiring mechanism 5, the robotic arm 6 and the controller 2 are electrically connected. The connection mechanism 6 uses a small industrial collaborative robotic arm that can cover the entire operating area of ​​the wiring mechanism 5. It supports multi-joint collaborative movement and is equipped with an adaptive clamping fixture. It can automatically adjust the clamping force according to the different specifications of motor connection cables to avoid damaging the cables, thereby realizing automated wiring in the test process. It can clamp and grab the connection cables of the motor to be tested in sequence according to the preset program of the controller 2, and accurately insert the cable end into the cable constraint cylinder 54 of the wiring mechanism 5, replacing manual tedious wiring operations and improving test efficiency and wiring accuracy. The test power supply 7 is installed on the top of the housing 1 and is located on the left side of the wiring mechanism 5. The test power supply 7 is electrically connected to the controller 2. The test power supply 7 is a programmable AC / DC dual-use power supply with good heat dissipation performance and electrical isolation effect. The test power supply 7 is precisely controlled by the controller 2 and can accurately output AC or DC power of different amplitudes and frequencies according to the test requirements to provide the power conditions required for the test of the motor. It can smoothly switch between rectification mode and inverter mode according to the preset test process of the controller 2, and has voltage and current harmonic monitoring functions, which can feed back the monitoring data to the controller 2 in real time.

[0036] As a preferred option, further, such as Figure 2As shown, the test mechanism 3 includes: a first limiting component 31, a lead screw assembly 32, a first motor 33, a mounting base plate 34, a rotation sensor 35, and a brake 36. The first limiting component 31 is fixedly installed on the upper surface of the housing 1 in the left-right direction and is located at the upper right of the test station mechanism 4. The first limiting component 31 is a heavy-duty linear guide rail assembly, which can provide stable guidance and limiting support for the lead screw assembly 32 and the mounting base plate 34. The lead screw assembly 32 is rotatably installed on the inner side of the first limiting component 31 in the left-right direction through a bearing seat. The lead screw assembly 32 is a high-precision ball screw, which converts the rotational motion of the first motor 33 into the linear motion of the mounting base plate 34 through the meshing transmission of the lead screw and nut. The first motor 33 is installed on the upper surface of the housing 1 and is located on the right side of the lead screw assembly 32. The rotating end of the first motor 33 is fixedly connected to the lead screw shaft of the lead screw assembly 32. The first motor 33 is electrically connected to the controller 2. The first motor 33 is a high-precision servo motor and is regulated by the controller 2. The controller 2 can adjust the speed and direction of rotation according to the test requirements, thereby controlling the translation speed and displacement of the mounting base 34 to achieve precise control of the docking position of the test components. The speed sensor 35 is installed on the middle left side of the upper surface of the mounting base 34. The speed sensor 35 and the controller 2 are electrically connected. The speed sensor 35 is an incremental photoelectric encoder, which can collect the speed, rotation angle and rotation stability data of the motor under test in rectifier mode, inverter mode and different load conditions in real time. The brake 36 is installed on the middle right side of the upper surface of the mounting base 34. The internal rotating end of the brake 36 and the speed sensor 35 are connected by a coupling. The brake 36 and the controller 2 are electrically connected. The brake 36 is an electromagnetic braking servo brake. The input end of the brake 36 is coaxially connected to the internal rotating end of the speed sensor 35 through a flexible coupling. With the data feedback from the speed sensor 35, the controller 2 can accurately adjust the control torque to achieve stable speed control and load simulation of the rotating end of the test motor.

[0037] As a preferred option, further, such as Figure 3 and Figure 4As shown, the test station mechanism 4 includes: a vertical frame 41, a second limiting component 42, a bracket 43, a first electric telescopic rod 44, an electric scissor lift 45, a base frame 46, a roller frame 47, a transmission chain assembly 48, a track frame 49, a limiting groove 410, a rack 411, a connecting pin 412, a groove frame 413, a driven gear 414, a transmission gear 415, a second motor 416, a drive gear 417, a straight groove 418, a support frame 419, a miniature electric telescopic rod 420, a connecting bracket 421, and a motor mounting base 422; the vertical frame 41 is embedded in the rear side of the groove inner wall of the outer casing 1 along the vertical direction; there are two second limiting components 42, which are respectively positioned along the vertical direction. The first electric telescopic rod 44 is installed at the front left and right ends of the vertical frame 41. The second limiting component 42 is a high-precision linear guide slider assembly. The guide rail is fixedly installed at the front left and right ends of the vertical frame 41 by bolts along the vertical direction. The guide rail is fitted with a slider as a limiting end, providing precise guidance and limiting for the lifting and lowering movement of the bracket 43. The bracket 43 is fixedly installed in front of the limiting ends of the two second limiting components 42. The first electric telescopic rod 44 is installed at the bottom middle of the vertical frame 41 along the vertical direction. The telescopic end of the first electric telescopic rod 44 is fixedly connected to the rear side of the bracket 43. The first electric telescopic rod 44 is electrically connected to the controller 2. The first electric telescopic rod 44 is an industrial-grade electric push rod. It drives the bracket 43 along the vertical direction by its own extension and retraction. The guide rail of the two limit components 42 moves up and down to adjust the height of the workstation. When lowering, it facilitates the loading and unloading of the motor by the operator; when rising, it moves the motor closer to the test mechanism 3, preparing for subsequent fine-tuning of the height. The electric scissor lift 45 is installed on top of the bracket 43 and is electrically connected to the controller 2. The electric scissor lift 45 is a high-precision electric scissor lift, capable of finely adjusting the height of the test motor. It precisely lifts the base frame 46 and the motor under test to the same horizontal level as the speed sensor 35 and brake 36 of the test mechanism 3, ensuring coaxiality when they are connected. The base frame 46 is fixedly installed on the top of the lifting end of the electric scissor lift 45 along the left-right direction. The number of roller frames 47... There are two roller frames 47, which are respectively installed on the front and rear sides of the top of the base frame 46 in the left and right directions. The roller frames 47 are heavy-duty roller assemblies, with several rollers spaced apart from left to right. The roller surfaces are made of polyurethane material, which can provide rolling support for the track frame 49, so that the track frame 49 can move smoothly in the left and right directions and reduce friction during movement. The transmission chain assembly 48 is fixedly installed on the top of the base frame 46 in the left and right directions through the mounting base, and is located inside and behind the two roller frames 47. The transmission chain assembly 48 is a roller chain assembly, which includes a sprocket and a chain, and plays the role of transmitting power. The circumferential rotation of the chain drives the connecting pin 412 to move, thereby driving the support frame 419 to move left and right.The track frame 49 is engaged with the outer sides of the front and rear roller frames 47 in the left-right direction, and the inner sliding groove of the track frame 49 fits against the rollers of the roller frame 47; there are two limiting grooves 410, which are respectively opened on the front and rear sides of the track frame 49 in the left-right direction. The limiting grooves 410 provide guidance and limitation for the support frame 419, so that the support frame 419 can move smoothly along its own groove cavity, while limiting the vertical movement of the track frame 49 and ensuring the horizontal stability of the track frame during movement; the rack 411 is fixedly installed on the inner rear side of the track frame 49 in the left-right direction; the connecting pin 412 is fixedly installed. At the rear center of the rack 411, the rear end of the connecting pin 412 is fixedly connected to the front side of the upper chain of the transmission chain assembly 48; the slot frame 413 is fixedly installed on the upper inner side of the base frame 46 in the left-right direction; there are two driven gears 414, which are rotatably installed on the left and right ends of the inner side of the slot frame 413 via rotating shafts. The upper parts of the two driven gears 414 mesh with the lower left and right sides of the rack 411, respectively. The driven gears 414 can transmit the power of the transmission gear 415. Through the symmetrical meshing of the two driven gears 414 with the rack 411, the rack 411 is subjected to force. While moving evenly, the rack 411, after disengaging from one driven gear 414, can still maintain engagement with the other driven gear 414. The transmission gear 415 is rotatably mounted inside the tank frame 413 via a rotating shaft. The left and right sides of the transmission gear 415 mesh with the left and right driven gears 414 respectively, enabling the transmission gear 415 to achieve synchronous linkage between the two driven gears 414, ensuring that the rotational speed and direction of the left and right driven gears 414 are completely consistent, thereby driving the rack 411 to move smoothly. The second motor 416 is mounted on the outer left rear side of the tank frame 413, with its rotating end extending into the tank. Inside the frame 413, the second motor 416 and the controller 2 are electrically connected. The second motor 416 is a servo motor equipped with an absolute encoder, which can provide a power source for the translation of the track frame 49. The drive gear 417 is installed on the front side of the rotating end of the second motor 416, and the drive gear 417 meshes with the left driven gear 414. The straight groove 418 is opened on the rear side of the top of the track frame 49, which runs through the left and right directions. The support frame 419 is set above the outside of the connecting pin 412, and the rollers at the front and rear ends of the inner side of the support frame 419 are inserted into the inner cavities of the front and rear limit grooves 410 in the left and right directions, respectively.Two miniature electric telescopic rods 420 are provided, each embedded vertically into the top rear left and right ends of the straight groove 418. The miniature electric telescopic rods 420 are electrically connected to the controller 2. Each miniature electric telescopic rod 420 uses a small electric push rod to drive the connecting bracket 421 up and down, enabling engagement or disengagement with the transmission chain assembly 48. When the track frame 49 moves, one side of the miniature electric telescopic rod 420 extends, causing the connecting bracket 421 to engage with the chain gap inside the transmission chain assembly 48, thus achieving connection. The other side retracts to disengage. This alternating action ensures the accuracy and stability of the support frame 419's translation. Two connectors 421 are provided, each installed at the bottom of the telescopic ends of the left and right miniature electric telescopic rods 420. These connectors 421 pass through the left and right sides of the inner cavity of the straight groove 418 and engage with the top gap of the chain in the transmission chain assembly 48. A motor mounting base 422 is fixedly installed in the middle of the upper surface of the straight groove 418. This adjustable motor mounting base is equipped with rubber shock-absorbing pads and positioning pins. The rubber shock-absorbing pads reduce vibration transmission during motor operation, and the positioning pins ensure coaxiality after motor installation. The adjustable design adapts to different specifications of motors under test, improving the equipment's versatility.

[0038] As a preferred option, further, such as Figure 5 , Figure 6 and Figure 7As shown, the wiring mechanism 5 includes: a housing 51, a connector 52, a heat sink 53, a cable restraint sleeve 54, and a plug holder 55. The housing 51 is fixedly installed on the top of the outer casing 1 along the front-to-back direction. The housing 51 is made of die-cast aluminum alloy, which has good dustproof and electromagnetic interference prevention capabilities, preventing dust and debris from affecting the stability of the electrical connection, while isolating electromagnetic interference during the test and ensuring accurate signal transmission. The connector 52 is embedded in the bottom rear side of the housing 51 and is electrically connected to the test power supply 7. The connector 52 can form a power transmission channel between the test power supply 7 and the wiring mechanism 5. The heat sink 53 is embedded in the top rear side of the housing 51 and is electrically connected to the controller 2. The heat sink 53 is made of small... The fan radiator has heat sinks that fit against the heat-generating components inside the housing, effectively dissipating heat generated at electrical connection points during wiring and testing. A cable restraint sleeve 54 is embedded in the rear interior of the housing 51, ensuring precise alignment of the cable end with the insertion sleeve 55, providing accurate guidance for subsequent connector docking. Two insertion sleeves 55 are installed at the upper and lower ends of the rear interior of the housing 51, respectively. These sleeves are made of insulated, flame-retardant plastic and provide sliding guide channels for the first connector 56 and the second connector 511, preventing short circuits and ensuring smooth, linear movement of the upper and lower first and second connectors 56 and 511, achieving precise clamping of the cable end.

[0039] More specifically, the lower insert holder 55 has a bottom connecting component inside, which includes: a first connector 56, a fixed base 57, a first micro motor 58, a rotating base 59, and a first connecting rod 510. The first connector 56 is inserted into the inner cavity of the lower insert holder 55 and is electrically connected to the connecting plug 52. The first connector 56 is made of copper conductive material and can work with the upper second connector 511 to clamp the cable end. At the same time, the copper conductive material enables electrical conduction between the test power supply and the motor cable, ensuring stable power transmission. The fixed base 57 is fixedly installed at the bottom of the inner cavity of the housing 51 and is located on the rear side of the lower insert holder 55. The first micro motor 58 is installed on the outer right side of the fixed base 57, and the rotating end of the first micro motor 58 extends into the inner side of the fixed base 57. The motor 58 and controller 2 are electrically connected. The first micro motor 58 is a small, high-precision stepper motor, which can provide a power source for the lifting and lowering of the first connector seat 56. The rotating seat 59 is rotatably mounted on the inner side of the fixed seat 57 via a rotating shaft. The axis of the rotating seat 59 is fixedly connected to the rotating end of the first micro motor 58. The rotating seat 59 is U-shaped. The rotating seat 59 converts the rotational motion of the first micro motor 58 into the swing motion of the first connecting rod 510. The U-shaped structure of the rotating seat 59 can provide a stable installation space for the first connecting rod 510, ensuring the continuity and stability of power transmission. One end of the first connecting rod 510 is rotatably mounted on the inner side of the rotating seat 59 via a bearing. The other end of the first connecting rod 510 extends into the interior of the lower insert frame 55 and is rotatably connected to the inner bottom end of the first connector seat 56 via a rotating shaft.

[0040] More specifically, the upper socket holder 55 has a top connecting component inside, which includes: a second connector 511, a slot holder 512, a plug rod 513, a second micro motor 514, a second connecting rod 515, and a drive rod 516. The second connector 511 is inserted into the inner cavity of the upper socket holder 55, and the second connector 511 is electrically connected to the connecting plug 52. The second connector 511 is a copper conductive connector of the same type as the first connector 56, and can clamp the cable end opposite to the lower first connector 56. The head forms a stable electrical connection path; the slot frame 512 is fixedly installed inside the upper part of the housing 51 and is located behind the upper insert frame 55; the insert rod 513 is inserted into the inside of the slot frame 512, and the bottom end of the insert rod 513 is fixedly connected to the top end of the second connector seat 511; the second micro motor 514 is installed on the upper rear side of the slot frame 512, and the second micro motor 514 is electrically connected to the controller 2. The second micro motor 514 is a small high-precision stepper motor of the same model as the first micro motor 58, which can provide the second micro motor 514 with the controller 2. The descent of the dual connector 511 provides precise power, and the movement distance is precisely controlled by stepping. It works in coordination with the first micro motor 58 to ensure that the first connector 56 and the second connector 511 clamp the cable end synchronously with uniform clamping force. One end of the second connecting rod 515 is rotatably mounted on the inner side of the top of the plug rod 513 via a rotating shaft. The second connecting rod 515 converts the rotational motion of the drive rod 516 into the linear motion of the plug rod 513, realizing the conversion of power direction and ensuring that the driving force of the second micro motor 514 can be efficiently transmitted to the second connector 511, driving it to descend smoothly. One end of the drive rod 516 is fixedly mounted on the left side of the rotating end of the second micro motor 514, and the other end of the drive rod 516 is rotatably connected to the left side of the other end of the second connecting rod 515 via a rotating shaft. The drive rod 516 transmits the rotational power of the second micro motor 514, and through leverage, drives the second connecting rod 515 to swing, thereby driving the plug rod 513 to slide downward along the slot frame 512, ultimately realizing the upper clamping action of the second connector 511 on the cable end.

[0041] The work steps are as follows:

[0042] Step 1: The operator starts the controller 2 via the operating terminal. The controller 2 then executes the internal preset program, simultaneously activating the first electric telescopic rod 44, the second motor 416, the mini electric telescopic rod 420, the electric scissor lift 45, and the first motor 33, among other actuators. The first electric telescopic rod 44 shortens, causing the bracket 43 to descend smoothly to the preset low position under the guidance and constraint of the second limit component 42. The second motor 416 drives the drive gear 417 at its output end to rotate clockwise or counterclockwise. The left driven gear 414 engages with the drive gear 417. The transmission drives the gears to rotate synchronously. Simultaneously, through the linkage of the transmission gear 415, the right driven gear 414 rotates synchronously and in the same direction. The rack 411, meshing with the driven gears 414 on both sides, moves left and right under the driving force of the gears, thereby causing the track frame 49 to move smoothly horizontally along the outer sides of the front and rear roller frames 47. When the track frame 49 moves to the left and extends out of the equipment housing, the right miniature electric telescopic rod 420 extends, pushing the corresponding connecting bracket 421 into the chain gap of the transmission chain assembly 48 to achieve docking. Simultaneously, the left miniature electric telescopic rod 420... The shortening of the track frame 49 causes the left connecting bracket 421 to disengage from the chain gap. When the track frame 49 moves to the right and resets, the left and right miniature electric telescopic rods 420 move in opposite directions, achieving bidirectional movement of the support frame 419 through alternating docking. Under the coordinated drive of the transmission chain assembly 48 and the support frame 419, the motor mounting base 422 extends to the left outside the outer casing 1 along with the track frame 49. The operator installs the motor to be tested inside the motor mounting base 422. The controller 2 controls the track frame 49 to reset in the reverse direction, and at the same time, the first electric telescopic rod 44 extends, causing the bracket 43 to rise. Upon reaching the preset height, the electric scissor lift platform 45 starts to rise, lifting the upper base frame 46 and the motor under test to the same horizontal height as the rotation sensor 35 of the test mechanism 3. The track frame 49 and support frame 419 continue to extend to the right to the designated docking position. At the same time, the first motor 33 starts, driving the lead screw of the lead screw assembly 32 to rotate, causing the lead screw nut to drive the mounting base plate 34 to move horizontally to the left under the constraint of the first limit assembly 31, driving the rotation sensor 35 on the mounting base plate to dock with the rotating end of the motor under test, completing the mechanical docking preparation before the test.

[0043] Step 2: After docking is completed, controller 2 continues to execute the preset program, starting robotic arm 6, first micro motor 58, second micro motor 514, test power supply 7, speed sensor 35, and brake 36, entering the wiring and testing stage. Robotic arm 6 moves along the preset path, sequentially clamping and grabbing the connecting cable of the motor under test, accurately inserting the cable end into the cable constraint tube 54 of the wiring mechanism 5, and guiding it to the wiring area inside the housing 51 through the cable constraint tube. In the corresponding position, the first micro motor 58 in the wiring mechanism 5 drives the rotating seat 59 in the fixed seat 57 to rotate upward. The rotating seat 59 pushes the first connector seat 56 to move upward along the lower insertion tube frame 55 through the first connecting rod 510. At the same time, the second micro motor 514 starts, driving the drive rod 516 to rotate clockwise. The drive rod 516 pulls the insertion rod 513 downward along the slot frame 512 through the second connecting rod 515, thereby driving the second connector... The seat 511 moves downward along the upper insert frame 55, and the first connector seat 56 and the second connector seat 511 clamp the cable end from the upper and lower sides, forming a stable electrical connection path to prepare for test power supply and data transmission. The controller 2 controls the test power supply 7 to automatically switch between rectification mode and inverter mode of the motor under test according to the preset test plan. During the test, the controller 2 monitors the core electrical parameters of the test motor in real time, such as voltage, current harmonics, and power, through the test power supply 7 to judge the stability of mode switching. At the same time, the speed sensor 35 continuously collects data such as rotation speed and rotation stability of the motor under test under different modes and load conditions, and feeds the data back to the controller 2 in real time. The brake 36 accurately adjusts the braking torque on the rotating end of the test motor according to the feedback data of the speed sensor 35, simulating different load conditions in the actual operation of the motor, and ensuring that the test conditions are consistent with the actual application scenario.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A test device for motor rectification and switching, characterized in that, include: The outer casing (1) has a groove on its left side; The controller (2) is fixedly mounted on the right front of the outer surface of the housing (1) by a bracket; The test mechanism (3) is located on the top right side of the outer casing (1); The test station mechanism (4) is located inside the left groove of the outer casing (1); Wiring mechanism (5), the number of wiring mechanisms (5) is several, the several wiring mechanisms (5) are arranged at intervals from left to right on the top of the outer shell (1) and located in front of the test station mechanism (4); A robotic arm (6) is mounted on the top of the housing (1) and located to the right of the wiring mechanism (5). The robotic arm (6) is electrically connected to the controller (2). The test power supply (7) is installed at the top of the housing (1) and located on the left side of the wiring mechanism (5). The test power supply (7) and the controller (2) are electrically connected. The test station mechanism (4) includes: A vertical frame (41) is embedded in the rear side of the groove inner wall of the outer casing (1) in the vertical direction; The second limiting component (42) has two components, and the two second limiting components (42) are respectively installed on the left and right ends of the front side of the vertical frame (41) in the vertical direction; The bracket (43) is fixedly installed on the front side of the limiting ends of the two second limiting components (42) on the left and right sides. The first electric telescopic rod (44) is installed in the middle of the bottom end of the vertical frame (41) in the vertical direction. The telescopic end of the first electric telescopic rod (44) is fixedly connected to the rear side of the bracket (43). The first electric telescopic rod (44) and the controller (2) are electrically connected. An electric scissor lift (45) is installed on top of the bracket (43), and the electric scissor lift (45) is electrically connected to the controller (2); The base frame (46) is fixedly installed on the top of the lifting end of the electric scissor lift (45) in the left-right direction; Roller frame (47), there are two roller frames (47), and the two roller frames (47) are respectively installed on the front and rear sides of the top of the base frame (46) in the left and right direction; The drive chain assembly (48) is fixedly mounted on the top of the base frame (46) in the left-right direction via a mounting bracket, and is located behind the inner side of the two front and rear roller frames (47). The track frame (49) is snapped onto the outside of the front and rear roller frames (47) in the left and right directions; The limiting groove (410) has two grooves, which are respectively opened on the front and rear sides of the outer side of the track frame (49) in the left and right directions. A rack (411) is fixedly installed on the inner rear side of the track frame (49) in the left-right direction; A connecting pin (412) is fixedly installed in the middle of the rear side of the rack (411), and the rear end of the connecting pin (412) is fixedly connected to the front side of the upper chain of the transmission chain assembly (48). The trough frame (413) is fixedly installed on the upper inner side of the base frame (46) in the left-right direction; Driven gear (414), there are two driven gears (414), the two driven gears (414) are respectively rotatably installed on the left and right ends of the inner side of the slot frame (413) through a rotating shaft, and the upper part of the two driven gears (414) respectively meshes with the lower left and right sides of the rack (411); The transmission gear (415) is rotatably mounted on the inner side of the slot frame (413) via a rotating shaft, and the left and right sides of the transmission gear (415) mesh with the left and right driven gears (414) respectively. The second motor (416) is installed on the outer left rear side of the tank frame (413). The rotating end of the second motor (416) extends into the inner side of the tank frame (413). The second motor (416) and the controller (2) are electrically connected. A drive gear (417) is installed on the front side of the rotating end of the second motor (416), and the drive gear (417) meshes with the left driven gear (414); A straight groove (418) is formed on the rear side of the top of the track frame (49) and runs vertically in the left-right direction; The support frame (419) is located above the outside of the connecting pin (412), and the rollers at the front and rear ends of the inner side of the support frame (419) are respectively inserted into the inner cavities of the front and rear limiting grooves (410) in the left and right directions. The miniature electric telescopic rod (420) has two parts. The two miniature electric telescopic rods (420) are respectively embedded in the top rear left and right ends of the straight groove (418) in the vertical direction. The miniature electric telescopic rod (420) and the controller (2) are electrically connected. Connecting bracket (421), there are two connecting brackets (421), the two connecting brackets (421) are respectively installed at the bottom of the telescopic ends of the left and right miniature electric telescopic rods (420), the two connecting brackets (421) can pass through the left and right sides of the inner cavity of the straight groove (418) and engage with the top gap of the chain of the transmission chain assembly (48); The motor mounting base (422) is fixedly installed in the middle of the upper surface of the linear groove (418); The second motor (416) drives the drive gear (417) to rotate, and the transmission gear (415) drives the driven gears (414) on both sides to drive the rack (411) and the track frame (49) to move horizontally along the roller frame (47). The micro electric telescopic rod (420) drives the connecting card seat (421) to alternately dock with the transmission chain assembly (48). When the track frame (49) moves to the left and extends out of the equipment shell, the right micro electric telescopic rod extends and pushes the corresponding connecting card seat (421) to insert into the chain gap of the transmission chain assembly (48) to achieve docking. At the same time, the left micro electric telescopic rod shortens and drives the left connecting card seat (421) to disengage from the chain gap. When the track frame (49) moves to the right and resets, the left and right micro electric telescopic rods move in opposite directions to realize the extension and reset of the motor mounting base (422).

2. The test equipment for motor rectification and switching according to claim 1, characterized in that, The wiring mechanism (5) includes: The housing (51) is fixedly installed on the top of the outer shell (1) in the front-back direction; A connector (52) is embedded in the bottom rear side of the housing (51), and the connector (52) is electrically connected to the test power supply (7); A heat sink (53) is embedded in the top rear side of the housing (51), and the heat sink (53) is electrically connected to the controller (2); The cable restraint tube (54) is embedded in the rear side of the housing (51) along the front-back direction; Insert holder (55), there are two insert holders (55), and the two insert holders (55) are respectively installed at the upper and lower ends of the rear side inside the housing (51).

3. The test equipment for motor rectification and switching according to claim 2, characterized in that, The lower insert holder (55) has a bottom connecting component inside, and the upper insert holder (55) has a top connecting component inside.

4. The test equipment for motor rectification and switching according to claim 3, characterized in that, The bottom connecting component includes: The first connector (56) is inserted into the inner cavity of the lower insert holder (55), and the first connector (56) and the connector plug (52) are electrically connected. The fixing seat (57) is fixedly installed at the bottom inside of the housing (51) and located on the rear side of the lower insert bracket (55); The first micro motor (58) is installed on the outside right side of the fixed base (57), the rotating end of the first micro motor (58) extends into the inside of the fixed base (57), and the first micro motor (58) is electrically connected to the controller (2). The rotating seat (59) is rotatably mounted on the inner side of the fixed seat (57) via a rotating shaft. The axis of the rotating seat (59) is fixedly connected to the rotating end of the first micro motor (58). The rotating seat (59) is U-shaped. The first connecting rod (510) is rotatably mounted on the inner side of the rotating seat (59) via a bearing at one end, and the other end of the first connecting rod (510) extends into the interior of the lower insert holder (55) and is rotatably connected to the inner bottom end of the first connector seat (56) via a rotating shaft.

5. The test equipment for motor rectification and switching according to claim 4, characterized in that, The top connecting component includes: The second connector (511) is inserted into the inner cavity of the above-mentioned insert holder (55), and the second connector (511) and the connecting plug (52) are electrically connected. The slot holder (512) is fixedly installed inside the housing (51) and located on the rear side of the upper insert holder (55); Insert rod (513) is inserted into the inside of the slot frame (512), and the bottom end of the insert rod (513) is fixedly connected to the top end of the second connector seat (511); The second micro motor (514) is mounted on the upper rear side of the slot frame (512), and the second micro motor (514) is electrically connected to the controller (2); The second connecting rod (515) is rotatably mounted on the inner side of the top end of the insert rod (513) via a pivot. One end of the drive rod (516) is fixedly installed on the left side of the rotating end of the second micro motor (514), and the other end of the drive rod (516) is rotatably connected to the left side of the other end of the second connecting rod (515) via a rotating shaft.

6. The test equipment for motor rectification and switching according to claim 5, characterized in that, The robotic arm (6) sends the end of the motor cable into the cable constraint tube (54) of the wiring mechanism (5) according to a preset path. The controller (2) simultaneously starts the first micro motor (58) and the second micro motor (514). The first micro motor (58) pushes the lower first connector seat (56) to rise along the insert frame (55) through the rotating seat (59) and the first connecting rod (510). The second micro motor (514) pulls the upper second connector seat (511) to fall along the insert frame (55) through the drive rod (516) and the second connecting rod (515). The two clamp the cable end in opposite directions and form a stable electrical connection path.

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