Load simulation test device for permanent magnet motor

Abstract

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.

Description

Technical Field

[0001] The present invention relates to the technical field of motor testing, and in particular to a load simulation testing device for a permanent magnet motor. Background Art

[0002] The load test of a permanent magnet motor is a key link for evaluating the performance, reliability and efficiency of the motor, mainly used to verify the output characteristics of the motor under actual operating conditions. During the test, the motor drives a simulated load at rated voltage and frequency, and different working conditions are simulated by adjusting the load torque, and parameters such as its speed, current, power, and temperature rise are measured. The risk of permanent magnet demagnetization needs to be concerned during the test, especially under high temperature or overcurrent conditions. The load test of a permanent magnet motor can test its load force through a load simulation testing device.

[0003] Patent No. CN118731688B discloses a motor testing device for new energy vehicles, which relates to the technical field of new energy motor testing; it includes a base, a top plate is arranged on the top of the base, a deflection mounting table is rotatably mounted on the base, and a support oil cylinder I for supporting the deflection mounting table is arranged at the bottom of the base; a sliding table is slidably arranged on the deflection mounting table, and a vibration convex part is arranged on the deflection mounting table; buffer mechanisms are arranged at both ends of the deflection mounting table for buffering the sliding table; a limiting oil cylinder is arranged on the deflection mounting table for positioning the sliding table; a positioning mechanism is arranged on the sliding table for positioning and fixing the motor to be tested; a temperature control device is arranged on the top plate, and a load adjustment structure is arranged on the top plate for adjusting the load; this invention adjusts the load of the motor to be tested by assembling counterweight blocks onto the load drum in a clamping manner, but when assembling the counterweight blocks, the test work needs to be paused for the assembly operation, which is very time-consuming for the test and will also greatly reduce the test efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a load simulation testing device for a permanent magnet motor. When the cylinder works to drive the movable rod and the sleeve simultaneously, the load can be adjusted when the movable rod moves, and the sleeve will move along the surface of the rotating shaft when it moves, so that the load force of the permanent magnet motor can be adjusted without stopping the machine, greatly improving the testing efficiency of the permanent magnet motor.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A load simulation testing device for a permanent magnet motor, comprising: a test bench, an installation table is installed on the test bench, a permanent magnet motor is installed on the installation table, a load test box is installed on the top of the test bench close to the permanent magnet motor, and a controller is installed on the top of the test bench close to the load test box;

[0006] The mounting table includes a rotating plate for changing the position of the permanent magnet motor, a mounting bracket for mounting the permanent magnet motor, and a fixing seat for docking the permanent magnet motor with the load test box;

[0007] A rotating plate is rotatably mounted on the top of the mounting table, and a mounting bracket is movably mounted on the rotating plate;

[0008] A fixing seat is fixedly mounted inside the mounting table;

[0009] The load test box includes a counterweight for testing the rotational load of the permanent magnet motor, and an end cover plate for adjusting the load force of the counterweight;

[0010] A counterweight is arranged inside the load test box, and end cover plates are rotatably mounted at both ends of the load test box.

[0011] Preferably, the rotating plate includes a first tooth groove and a first gear for the rotation of the rotating plate, and a driving motor for providing the driving force for the rotation of the first gear;

[0012] A number of groups of first tooth grooves are arranged on the outer surface of the rotating plate in a circular array, and a driving motor is fixedly mounted on the outer surface of the mounting table;

[0013] A first gear is fixedly mounted at the output end of the driving motor, and the side of the first gear passes through a through hole in the mounting table and is connected to the first tooth groove.

[0014] Preferably, the mounting bracket includes a mounting groove for positioning the permanent magnet motor, and a clamping plate for fixing the permanent magnet motor;

[0015] A mounting groove is formed on the mounting bracket, and a permanent magnet motor is movably connected inside the mounting groove;

[0016] One side of the top of the mounting bracket is rotatably mounted with a clamping plate through a hinge, and the other end of the clamping plate is fixedly mounted on the other side of the top of the mounting bracket through a bolt.

[0017] Preferably, the fixing seat includes a push plate and a moving plate for pushing the mounting bracket to move, a slider for limiting the mounting bracket, and a sleeve, a plug and a slot for docking the permanent magnet motor with the load test box;

[0018] A push plate is movably mounted on the side of the fixing seat through an assembly groove, and a moving plate is fixedly mounted at the bottom of the mounting bracket;

[0019] The bottom of the moving plate passes through an assembly groove on the surface of the rotating plate and is connected to the inside of the mounting table, and a slider is fixedly mounted at the bottom of the moving plate;

[0020] The bottom of the slider passes through the assembly groove on the surface of the rotating plate and is connected to the inside of the mounting table;

[0021] The output end of the permanent magnet motor is fixedly installed with a sleeve through bolts, and an insertion block is fixedly installed inside the sleeve;

[0022] One end of the load test box close to the permanent magnet motor is provided with a slot, and two insertion rods are symmetrically and fixedly installed on the outer surface of the sleeve;

[0023] One end of the load test box close to the slot is fixedly installed with a correction cylinder, and two extrusion inclined surfaces are axially symmetrically arranged on the inner wall of the correction cylinder;

[0024] Two docking grooves are axially symmetrically arranged on the inner wall of the correction cylinder close to the extrusion inclined surface.

[0025] Preferably, the fixed seat further includes a sliding rod for guiding the slider, a positioning plate for fixing the sliding rod, and a spring for resetting the slider;

[0026] The surface of the slider is connected through the assembly groove with a sliding rod, and a positioning plate is fixedly installed at one end of the sliding rod;

[0027] The top of the positioning plate is fixedly installed at the bottom of the rotating plate, and a spring is sleeved on the outer surface of the sliding rod;

[0028] Both ends of the spring are respectively fixedly connected to the surfaces of the slider and the positioning plate.

[0029] Preferably, the fixed seat further includes a rotating rod, a second gear, and a third gear for pushing the first rack and the second rack, and for driving the first rack and the second rack to move towards each other or in opposite directions;

[0030] A first rack is fixedly installed on one side of the push plate, and a second rack is movably installed on the outer surface of the fixed seat away from the first rack through an assembly groove;

[0031] A rotating rod is rotatably installed at the axial center of the fixed seat through a bearing, and a second gear matched with the first rack is fixedly installed on the outer surface of the rotating rod;

[0032] A third gear matched with the second rack is fixedly installed on the outer surface of the rotating rod.

[0033] Preferably, the fixed seat further includes a mounting plate for fixing the second rack, and a cylinder for applying a driving force to the mounting plate;

[0034] A cylinder is fixedly installed on the surface of the fixed seat through an assembly groove, and a mounting plate is fixedly installed at the output end of the cylinder;

[0035] One end of a second rack is fixedly mounted on the surface of the mounting plate.

[0036] Preferably, the counterweight includes a rotating shaft for rotation, a box cover for overhauling the counterweight, and a bearing seat for mounting the rotating shaft;

[0037] Two bearing seats are fixedly mounted on the top of the test bench near both ends of the load test box, and the inside of the counterweight is fixedly mounted on the outer surface of the rotating shaft through an assembly hole;

[0038] A slot is provided at one end of the rotating shaft close to the permanent magnet motor, and a correction cylinder is fixedly mounted on the outer surface of the rotating shaft close to the slot;

[0039] Both ends of the rotating shaft pass through the inside of the load test box and the bearing seat for rotational connection;

[0040] A box cover is rotatably mounted on the outer surface of the load test box through a hinge.

[0041] Preferably, the end cover plate includes a first magnet and a second magnet for adjusting the load force of the counterweight, and a chute, an inclined extrusion groove and a guide rod for adjusting the position of the first magnet;

[0042] A second magnet is fixedly mounted on the outer surface of the counterweight through an assembly groove, and chutes are provided at both ends of the load test box;

[0043] An inclined extrusion groove is penetrated and provided on the surface of the end cover plate close to the chute, and the outer surface of the guide rod is penetrated and movably connected inside the chute and the inclined extrusion groove;

[0044] A first magnet is fixedly mounted at one end of the guide rod.

[0045] Preferably, the end cover plate further includes a second tooth groove and a fourth gear for the rotation of the end cover plate, and a movable rod, a longitudinal limiting groove, a spiral limiting groove and a limiting block for the rotation of the fourth gear, and a rotating member for mounting the fourth gear;

[0046] A second tooth groove is provided on the outer surface of the end cover plate, and a rotating member is fixedly mounted on the test bench;

[0047] A fourth gear matched with the second tooth groove is rotatably mounted on the rotating member, and a movable rod is movably connected inside the fourth gear through an assembly hole;

[0048] The left end of the movable rod penetrates through the surface of the mounting table and is fixedly mounted with a mounting plate, and a longitudinal limiting groove is provided on the surface of the movable rod;

[0049] A spiral limiting groove is formed on the surface of the movable rod close to the longitudinal limiting groove, and a limiting block is movably connected inside the spiral limiting groove;

[0050] The end of the limiting block is fixedly connected to the inner wall of the fourth gear assembly hole.

[0051] Compared with the prior art, the beneficial effects of the present invention are as follows: The load simulation test device for the permanent magnet motor:

[0052] 1. A cylinder is provided to drive the movable rod to move. When the movable rod moves, it can drive the end cover plate to rotate through the cooperation of components such as the longitudinal limiting groove, the spiral limiting groove, the fourth gear, the second tooth groove and the limiting block. When the end cover plate rotates, it can drive the guide rod to move through the cooperation of the oblique extrusion groove and the sliding groove. When the guide rod moves, it can drive the first magnet to approach or move away from the second magnet to adjust the load force of the permanent magnet motor, which is convenient to adjust the load force of the permanent magnet motor as needed;

[0053] 2. A movable rod is provided. While adjusting the load force of the permanent magnet motor, the cylinder can drive the permanent magnet motor, the sleeve and the insertion block to move through the cooperation of components. When the sleeve moves, it can slide on the surface of the rotating shaft. When the insertion block slides, it can slide inside the insertion slot. While the sleeve and the insertion block are sliding, the permanent magnet motor can work for load testing, which is convenient to adjust the load force when the permanent magnet motor is not shut down, thereby greatly improving the testing efficiency of the permanent magnet motor;

[0054] 3. When the driving motor works, it drives the rotating plate to rotate through the cooperation of the first gear and the first tooth groove. When the rotating plate rotates, it can drive multiple groups of mounting brackets on the upper surface and the permanent magnet motors on the mounting brackets to exchange positions. When the mounting brackets adjust positions, the permanent magnet motors can be tested. At the same time, the tested permanent magnet motors can be disassembled and the permanent magnet motors to be tested can be installed and fixed, which is convenient to greatly improve the testing efficiency of the permanent magnet motor and reduce the construction time for disassembling and installing the permanent magnet motor;

[0055] 4. When the cylinder works, it can drive the pushing mounting plate to move. When the mounting plate moves, it drives the second rack to move. When the second rack moves, it can drive the first rack to move through the cooperation of the third gear, the second gear and the rotating rod. When the first rack moves, it can drive the push plate and the moving plate to move. When the moving plate moves, it can drive the mounting bracket to move. When the mounting bracket moves, it can drive the permanent magnet motor, the sleeve and the rotating shaft to be docked, which is convenient for the permanent magnet motor to be automatically docked with the rotating shaft for load testing;

[0056] 5. When the permanent magnet motor moves, it can drive the sleeve, the insertion block and the insertion rod at the output end to move. When the sleeve, the insertion block and the insertion rod move, they can be inserted into the interior of the correction cylinder. When the insertion rod enters the interior of the correction cylinder, it will squeeze the extrusion inclined surface. When the extrusion inclined surface is squeezed, it can correct the angle between the rotating shaft and the slot. When the insertion rod is inserted into the bottom of the extrusion inclined surface, the slot and the insertion block can have the same angle for docking, which facilitates the automatic docking angle when the permanent magnet motor is docked with the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0058] Figure 2 is a schematic three-dimensional sectional structure diagram of the mounting table of the present invention;

[0059] Figure 3 is a schematic three-dimensional exploded view structure diagram of the mounting table of the present invention from a first perspective;

[0060] Figure 4 is a schematic three-dimensional exploded view structure diagram of the mounting table of the present invention from a second perspective;

[0061] Figure 5 is a schematic three-dimensional sectional structure diagram of the load test box of the present invention;

[0062] Figure 6 is a schematic three-dimensional sectional structure diagram of the correction cylinder of the present invention;

[0063] Figure 7 is a schematic enlarged sectional structure diagram of a partial part of the movable rod of the present invention;

[0064] Figure 8 is the present invention Figure 1 is a schematic enlarged structure diagram of part A in the figure.

[0065] In the figure: 100, test bench;

[0066] 200, mounting table;

[0067] 210, rotating plate; 211, first tooth groove; 212, driving motor; 213, first gear;

[0068] 220, mounting bracket; 221, mounting groove; 222, clamping plate;

[0069] 230. Fixed seat; 231. Pusher plate; 232. Movable plate; 233. Positioning plate; 234. Slide bar; 235. Slide block; 236. Spring; 237. First rack; 238. Rotating rod; 239. Second gear; 2310. Third gear; 2311. Second rack; 2312. Mounting plate; 2313. Cylinder; 2314. Sleeve; 2315. Insert block; 2316. Insert slot; 2317. Insert rod; 2318. Correction cylinder; 2319. Extrusion inclined plane; 2320. Docking groove;

[0070] 300. Permanent magnet motor;

[0071] 400. Load test box;

[0072] 410. Counterweight; 411. Rotating shaft; 412. Box cover; 413. Bearing seat;

[0073] 420. End cover plate; 421. Slide groove; 422. Oblique extrusion groove; 423. Guide rod; 424. First magnet; 425. Second magnet; 426. Second tooth groove; 427. Movable rod; 428. Longitudinal limit groove; 429. Spiral limit groove; 4210. Fourth gear; 4211. Limit block; 4212. Rotating part;

[0074] 500. Controller. Detailed implementation manner

[0075] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0076] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of this application described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or vehicle that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or vehicles.

[0077] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "liquid level", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0078] Moreover, in addition to being used to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0079] In addition, the terms "installed", "set up", "equipped with", "connected", "linked", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0080] Please refer to Figures 1 - 5 , the present invention provides an embodiment: a load simulation test device for a permanent magnet motor, including: a test bench 100, an installation table 200 is installed on the test bench 100, a permanent magnet motor 300 is installed on the installation table 200, a load test box 400 is installed near the top of the permanent magnet motor 300 on the test bench 100, and a controller 500 is installed near the top of the load test box 400 on the test bench 100;

[0081] It should be understood that the permanent magnet motor 300 is installed on the installation table 200. After the installation of the permanent magnet motor 300 is completed, the installation table 200 can be made to work through the controller 500. When the installation table 200 works, the permanent magnet motor 300 can be rotated to one side of the load test box 400, and the output end of the permanent magnet motor 300 can be docked with the load test box 400. When the permanent magnet motor 300 is docked with the load test box 400, a load test can be carried out.

[0082] Such as Figures 1 - 5As shown, the mounting table 200 includes a rotating plate 210 for changing the position of the permanent magnet motor 300, a mounting frame 220 for mounting the permanent magnet motor 300, and a fixing seat 230 for docking the permanent magnet motor 300 with the load test box 400. The rotating plate 210 is rotatably mounted on the top of the mounting table 200, the mounting frame 220 is movably mounted on the rotating plate 210, and the fixing seat 230 is fixedly mounted inside the mounting table 200;

[0083] It can be imagined that the permanent magnet motor 300 is respectively installed inside the mounting frame 220 on the mounting table 200. After the permanent magnet motor 300 is installed, the rotating plate 210 rotates through the work of components. When the rotating plate 210 rotates, it can drive the permanent magnet motor 300 on the mounting frame 220 to rotate to the side of the load test box 400. At this time, the components on the fixing seat 230 work to dock and test the output end of the permanent magnet motor 300 with the load test box 400.

[0084] As Figures 1 - 3 、 Figure 5 and Figure 8 shown, the load test box 400 includes a counterweight 410 for testing the rotational load of the permanent magnet motor 300, and an end cover plate 420 for adjusting the load force of the counterweight 410. The counterweight 410 is arranged inside the load test box 400, and end cover plates 420 are rotatably mounted at both ends of the load test box 400;

[0085] It should be noted that when the output end of the permanent magnet motor 300 rotates during testing, it can drive the counterweight 410 inside the load test box 400 to rotate through components. When the counterweight 410 rotates, the load force of the permanent magnet motor 300 can be tested, and the load force of the counterweight 410 can also be adjusted by rotating the end cover plate 420 through the work of components.

[0086] As Figures 1 - 4 shown, the rotating plate 210 includes a first tooth groove 211 and a first gear 213 for the rotation of the rotating plate 210, and a driving motor 212 for providing the driving force for the rotation of the first gear 213. A number of groups of first tooth grooves 211 are formed on the outer surface of the rotating plate 210 in a circular array. The driving motor 212 is fixedly mounted on the outer surface of the mounting table 200, the output end of the driving motor 212 is fixedly mounted with the first gear 213, and the side of the first gear 213 passes through the through hole of the mounting table 200 and is connected to the first tooth groove 211;

[0087] It can be conceived that when the drive motor 212 operates, it can drive the first gear 213 to rotate. When the first gear 213 rotates, it can drive the first tooth groove 211 to engage and rotate. When the first tooth groove 211 engages and rotates, it can drive the rotating plate 210 to rotate. When the rotating plate 210 rotates, it can drive multiple mounting brackets 220 on the upper surface and the permanent magnet motors 300 on the mounting brackets 220 to exchange positions. When the mounting brackets 220 adjust their positions, the permanent magnet motors 300 can be tested. At the same time, the tested permanent magnet motors 300 can be disassembled and the permanent magnet motors 300 to be tested can be installed and fixed.

[0088] As Figures 1 - 4 shown, the mounting bracket 220 includes a mounting groove 221 for positioning the permanent magnet motor 300 and a clamping plate 222 for fixing the permanent magnet motor 300. A mounting groove 221 is formed on the mounting bracket 220, and the permanent magnet motor 300 is movably connected inside the mounting groove 221. One side of the top of the mounting bracket 220 is rotatably mounted through a hinge with a clamping plate 222, and the other end of the clamping plate 222 is fixedly mounted with the other side of the top of the mounting bracket 220 through a bolt;

[0089] It should be understood that the front end plate of the permanent magnet motor 300 is inserted into the mounting groove 221 of the mounting bracket 220. After the permanent magnet motor 300 is inserted, the clamping plate 222 can be rotated. When the clamping plate 222 rotates, it can be flipped with the top of the mounting bracket 220 through the hinge. When the clamping plate 222 is flipped to a specified position, the permanent magnet motor 300 can be clamped and fixed. After the permanent magnet motor 300 is clamped and fixed, the clamping plate 222 can be locked with the mounting bracket 220 through a bolt.

[0090] As Figures 1 - 6As shown, the fixed seat 230 includes a push plate 231 and a moving plate 232 for pushing the mounting bracket 220 to move, a slider 235 for limiting the mounting bracket 220, and a sleeve 2314, a plug 2315 and a slot 2316 for docking the permanent magnet motor 300 and the load test box 400. The side of the fixed seat 230 is movably installed with the push plate 231 through an assembly groove. The bottom of the mounting bracket 220 is fixedly installed with the moving plate 232. The bottom of the moving plate 232 passes through the assembly groove on the surface of the rotating plate 210 and is connected to the inside of the mounting table 200. The bottom of the moving plate 232 is fixedly installed with the slider 235. The bottom of the slider 235 passes through the assembly groove on the surface of the rotating plate 210 and is connected to the inside of the mounting table 200. The output end of the permanent magnet motor 300 is fixedly installed with the sleeve 2314 through bolts. The inner side of the sleeve 2314 is fixedly installed with the plug 2315. One end of the load test box 400 close to the permanent magnet motor 300 is provided with the slot 2316. Two insertion rods 2317 are symmetrically and fixedly installed on the outer surface of the sleeve 2314. One end of the load test box 400 close to the slot 2316 is fixedly installed with a correction cylinder 2318. Two extrusion inclined surfaces 2319 are axially symmetrically formed on the inner wall of the correction cylinder 2318. Two docking grooves 2320 are axially symmetrically formed on the inner wall of the correction cylinder 2318 close to the extrusion inclined surface 2319;

[0091] It should be noted that when the push plate 231 moves, it can slide in the assembly groove of the fixed seat 230. When the push plate 231 slides to the side of the moving plate 232, it can be pushed. When the moving plate 232 is pushed, it can drive the mounting bracket 220 to move. When the mounting bracket 220 moves, it can drive the slider 235 to slide in the assembly groove on the rotating plate 210. When the mounting bracket 220 moves, it can drive the permanent magnet motor 300 to move. When the permanent magnet motor 300 moves, it can drive the sleeve 2314, the plug 2315 and the insertion rod 2317 at the output end to move. When the sleeve 2314, the plug 2315 and the insertion rod 2317 move, they can be inserted into the inside of the correction cylinder 2318. When the insertion rod 2317 enters the inside of the correction cylinder 2318, it will extrude the extrusion inclined surface 2319. When the extrusion inclined surface 2319 is extruded, it can drive the correction cylinder 2318, the rotating shaft 411 and the slot 2316 to rotate. When the insertion rod 2317 is inserted into the bottom of the extrusion inclined surface 2319, it can drive the slot 2316 to be docked with the plug 2315. At this time, the sleeve 2314, the plug 2315 and the insertion rod 2317 continue to move. The sleeve 2314 will be sleeved on the end of the rotating shaft 411. The plug 2315 will be inserted into the inside of the slot 2316. The insertion rod 2317 will be inserted into the inside of the docking groove 2320. When the plug 2315 is inserted into one end of the slot 2316, the permanent magnet motor 300 works and can drive the sleeve 2314 to rotate through the output end. The rotation of the sleeve 2314 can drive the rotating shaft 411 to rotate through the cooperation of the plug 2315 and the slot 2316.

[0092] Such asFigures 1 - 4 As shown in the figure, the fixed seat 230 further includes a slide bar 234 for guiding the slider 235, a positioning plate 233 for fixing the slide bar 234, and a spring 236 for actively resetting the slider 235. The surface of the slider 235 is connected through an assembly groove with the slide bar 234. One end of the slide bar 234 is fixedly installed with a positioning plate 233, the top of the positioning plate 233 is fixedly installed at the bottom of the rotating plate 210, the outer surface of the slide bar 234 is sleeved with a spring 236, and both ends of the spring 236 are respectively fixedly connected to the surfaces of the slider 235 and the positioning plate 233;

[0093] It can be understood that when the slider 235 slides inside the assembly groove of the rotating plate 210, the slider 235 itself can slide on the surface of the slide bar 234 through its own assembly hole. When the slider 235 slides on the surface of the slide bar 234, it can squeeze one end of the spring 236. When the permanent magnet motor 300 finishes the test and the push plate 231 moves backward, the slider 235 can be reset by the self-elastic force of the spring 236. When the slider 235 is reset, it can drive the moving plate 232 and the mounting bracket 220 to be reset.

[0094] As Figure 3 shown in the figure, the fixed seat 230 further includes a component for pushing the first rack 237 and the second rack 2311, and a rotating rod 238, a second gear 239, and a third gear 2310 for driving the first rack 237 and the second rack 2311 to move towards each other or in opposite directions. One side of the push plate 231 is fixedly installed with a first rack 237. The outer surface of the fixed seat 230 away from the first rack 237 is movably installed with a second rack 2311 through an assembly groove. The axial center of the fixed seat 230 is rotatably installed with a rotating rod 238 through a bearing. The outer surface of the rotating rod 238 is fixedly installed with a second gear 239 that cooperates with the first rack 237, and the outer surface of the rotating rod 238 is fixedly installed with a third gear 2310 that cooperates with the second rack 2311;

[0095] It should be noted that when the second rack 2311 moves, it can drive the third gear 2310 to mesh and rotate. When the third gear 2310 meshes and rotates, it drives the rotating rod 238 to rotate inside the fixed seat 230. When the rotating rod 238 rotates, it drives the second gear 239 to rotate. When the second gear 239 rotates, it can drive the first rack 237 to mesh and move. When the first rack 237 meshes and moves, it can drive the push plate 231 to move.

[0096] As Figure 2 and Figure 3As shown, the fixed seat 230 further includes a mounting plate 2312 for fixing the second rack 2311, and a cylinder 2313 for applying a driving force to the mounting plate 2312. The cylinder 2313 is fixedly mounted on the surface of the fixed seat 230 through an assembly groove. The output end of the cylinder 2313 is fixedly mounted with the mounting plate 2312, and one end of the second rack 2311 is fixedly mounted on the surface of the mounting plate 2312;

[0097] It should be understood that when the cylinder 2313 works, it can drive the mounting plate 2312 to move. When the mounting plate 2312 moves, it can drive the second rack 2311 to move. When the second rack 2311 moves, it can slide in the assembly groove of the fixed seat 230.

[0098] As Figures 1 - 3 、 Figure 5 and Figure 6 shown, the counterweight 410 includes a rotating shaft 411 for rotation, a box cover 412 for overhauling the counterweight 410, and a bearing seat 413 for mounting the rotating shaft 411. Two bearing seats 413 are fixedly mounted on the top of the test bench 100 near both ends of the load test box 400. The counterweight 410 is fixedly mounted on the outer surface of the rotating shaft 411 through an assembly hole. A slot 2316 is provided at one end of the rotating shaft 411 close to the permanent magnet motor 300. A correction cylinder 2318 is fixedly mounted on the outer surface of the rotating shaft 411 close to the slot 2316. Both ends of the rotating shaft 411 pass through the load test box 400 and are rotatably connected to the inside of the bearing seat 413. The outer surface of the load test box 400 is rotatably mounted with a box cover 412 through a hinge;

[0099] It can be imagined that when the rotating shaft 411 rotates, it rotates inside the bearing seat 413 and the load test box 400. When the rotating shaft 411 rotates, it can drive the counterweight 410 to rotate. When maintenance is required inside the load test box 400, the surface box cover 412 can be opened for repair.

[0100] As Figure 1 、 Figure 5 and Figure 8 shown, the end cover plate 420 includes a first magnet 424 and a second magnet 425 for adjusting the load force of the counterweight 410, and a sliding groove 421, an inclined extrusion groove 422 and a guide rod 423 for adjusting the position of the first magnet 424. The second magnet 425 is fixedly mounted on the outer surface of the counterweight 410 through an assembly groove. Sliding grooves 421 are provided at both ends of the load test box 400. An inclined extrusion groove 422 is penetrated and provided on the surface of the end cover plate 420 close to the sliding groove 421. The outer surface of the guide rod 423 is penetrated and movably connected inside the sliding groove 421 and the inclined extrusion groove 422. One end of the guide rod 423 is fixedly mounted with the first magnet 424;

[0101] It should be understood that when the end cover plate 420 rotates, it can drive the oblique extrusion groove 422 to rotate. When the oblique extrusion groove 422 rotates, it can push the surface of the guide rod 423. When the guide rod 423 is pushed, it can slide in the sliding groove 421. When the guide rod 423 slides, it can drive the first magnet 424 to move away from or close to the second magnet 425. When the first magnet 424 moves away from the second magnet 425, the suction force between them can be increased, thereby increasing the load force of the counterweight 410. When the first magnet 424 approaches the second magnet 425, the suction force between them can be reduced, thereby reducing the load force of the counterweight 410.

[0102] As Figures 1 - 3 and Figures 5 - 8 shown, the end cover plate 420 further includes a second tooth groove 426 for the rotation of the end cover plate 420 and a fourth gear 4210, as well as a movable rod 427, a longitudinal limit groove 428, a spiral limit groove 429 and a limit block 4211 for the rotation of the fourth gear 4210, and a rotating member 4212 for mounting the fourth gear 4210. A second tooth groove 426 is provided on the outer surface of the end cover plate 420. The test bench 100 is fixedly installed with a rotating member 4212. A fourth gear 4210 that cooperates with the second tooth groove 426 is rotatably installed on the rotating member 4212. The inside of the fourth gear 4210 is movably connected to a movable rod 427 through an assembly hole. The left end of the movable rod 427 penetrates the surface of the mounting table 200 and is fixedly installed with a mounting plate 2312. A longitudinal limit groove 428 is provided on the surface of the movable rod 427. A spiral limit groove 429 is provided on the surface of the movable rod 427 near the longitudinal limit groove 428. A limit block 4211 is movably connected inside the spiral limit groove 429. The end of the limit block 4211 is fixedly connected to the inner wall of the assembly hole of the fourth gear 4210;

[0103] It can be conceived that when the cylinder 2313 extends and works, it can drive the mounting plate 2312 to move leftward. When the mounting plate 2312 moves leftward, it can drive the movable rod 427 to move. When the movable rod 427 moves, it can slide in the assembly grooves of the mounting table 200, the load test box 400 and the fourth gear 4210. When the movable rod 427 slides, it can drive the longitudinal limiting groove 428 and the spiral limiting groove 429 to move. When the longitudinal limiting groove 428 moves, it can slide with the limiting block 4211. Here, it should be noted that when the longitudinal limiting groove 428 slides on the surface of the limiting block 4211, the sleeve 2314 at the output end of the permanent magnet motor 300 will gradually approach the end of the rotating shaft 411. When one end of the sleeve 2314 is sleeved on the end of the rotating shaft 411, one end of the insertion block 2315 will be inserted into the inside of the insertion slot 2316. At this time, when the permanent magnet motor 300 works, it can drive the rotating shaft 411 and the counterweight 410 to rotate through the cooperation of the sleeve 2314, the insertion block 2315 and the insertion slot 2316. At the same time, one end of the spiral limiting groove 429 will move to the side of the limiting block 4211. The spiral limiting groove 429 can push the limiting block 4211 through its own spiral groove. When the limiting block 4211 is pushed, it can drive the fourth gear 4210 to rotate. When the fourth gear 4210 rotates, it drives the second tooth groove 426 to engage and rotate. When the second tooth groove 426 engages and rotates, it can drive the end cover plate 420 to rotate. When the end cover plate 420 rotates, it can drive the first magnet 424 to approach the second magnet 425 through the cooperation of the chute 421, the oblique extrusion groove 422 and the guide rod 423 to increase the load of the permanent magnet motor 300;

[0104] When the cylinder 2313 contracts and works, it can drive the mounting plate 2312 and the movable rod 427 to move rightward. When the movable rod 427 moves rightward, it can drive the spiral limiting groove 429 to move rightward. When the spiral limiting groove 429 moves rightward, it can drive the first magnet 424 to move away from the second magnet 425 through the cooperation of relevant parts to reduce the load of the permanent magnet motor 300.

[0105] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered within the protection scope of the present invention.

Claims

1. A load simulation test device for a permanent magnet motor, comprising: Test bench, on which an installation table is installed, a permanent magnet motor is installed on the installation table, a load test box is installed near the top of the permanent magnet motor on the test bench, and a controller is installed near the top of the load test box on the test bench. It is characterized in that; The installation table includes a rotating plate for converting the position of the permanent magnet motor, an installation frame for installing the permanent magnet motor, and a fixing seat for docking the permanent magnet motor with the load test box; A rotating plate is rotatably installed on the top of the installation table, and an installation frame is movably installed on the rotating plate; A fixing seat is fixedly installed inside the installation table; The load test box includes a counterweight block for testing the rotational load of the permanent magnet motor, and an end cover plate for adjusting the load force of the counterweight block; A counterweight block is arranged inside the load test box, and end cover plates are rotatably installed at both ends of the load test box.

2. The load simulation test device for a permanent magnet motor according to claim 1, characterized in that: The rotating plate includes a first tooth groove and a first gear for the rotation of the rotating plate, and a driving motor for providing the driving force for the rotation of the first gear; A number of groups of first tooth grooves are arranged on the outer surface of the rotating plate in an annular array, and a driving motor is fixedly installed on the outer surface of the installation table; The output end of the driving motor is fixedly installed with a first gear, and the side of the first gear passes through the through hole of the installation table and is connected to the first tooth groove.

3. The load simulation test device for a permanent magnet motor according to claim 1, characterized in that: The installation frame includes an installation groove for positioning the permanent magnet motor, and a clamping plate for fixing the permanent magnet motor; An installation groove is formed on the installation frame, and a permanent magnet motor is movably connected inside the installation groove; One side of the top of the installation frame is rotatably installed with a clamping plate through a hinge, and the other end of the clamping plate is fixedly installed with the other side of the top of the installation frame through a bolt.

4. A load simulation test device for a permanent magnet motor according to claim 1, characterized in that: The fixing seat includes a push plate and a moving plate for pushing the installation frame to move, a slider for limiting the installation frame, and a sleeve, an insertion block, an insertion slot, an insertion rod, a correction cylinder, an extrusion inclined surface, and a docking groove for docking the permanent magnet motor with the load test box; The push plate is movably installed on the side of the fixing seat through an assembly groove, and the moving plate is fixedly installed at the bottom of the installation frame; The bottom of the moving plate passes through the assembly groove on the surface of the rotating plate and is connected to the inside of the installation table, and a slider is fixedly installed at the bottom of the moving plate; The bottom of the slider passes through the assembly groove on the surface of the rotating plate and is connected to the inside of the installation table; The output end of the permanent magnet motor is fixedly installed with a sleeve through a bolt, and an insertion block is fixedly installed inside the sleeve; One end of the load test box close to the permanent magnet motor is provided with an insertion slot, and two insertion rods are symmetrically and fixedly installed on the outer surface of the sleeve; A correction cylinder is fixedly installed at one end of the load test box close to the insertion slot, and two extrusion inclined surfaces are axially symmetrically formed on the inner wall of the correction cylinder; Two docking grooves are axially symmetrically formed on the inner wall of the correction cylinder close to the extrusion inclined surface.

5. The load simulation test device for a permanent magnet motor according to claim 4, characterized in that: The fixing seat further includes a sliding rod for guiding the slider, a positioning plate for fixing the sliding rod, and a spring for resetting the slider movably; The surface of the slider is connected with a sliding rod through an assembly groove, and a positioning plate is fixedly installed at one end of the sliding rod; The top of the positioning plate is fixedly installed at the bottom of the rotating plate, and a spring is sleeved on the outer surface of the sliding rod; Two ends of the spring are respectively fixedly connected to the surfaces of the slider and the positioning plate.

6. The load simulation test device for a permanent magnet motor according to claim 5, characterized in that: The fixed seat further includes a rotating rod, a second gear, and a third gear for pushing the first rack and the second rack, and for driving the first rack and the second rack to move towards each other or in opposite directions; One side of the push plate is fixedly installed with a first rack, and a second rack is movably installed on the outer surface of the fixed seat away from the first rack through an assembly groove; A rotating rod is rotatably installed at the axial center of the fixed seat through a bearing, and a second gear matched with the first rack is fixedly installed on the outer surface of the rotating rod; A third gear matched with the second rack is fixedly installed on the outer surface of the rotating rod.

7. The load simulation test device for a permanent magnet motor according to claim 6, wherein: The fixed seat further includes a mounting plate for fixing the second rack, and a cylinder for applying a driving force to the mounting plate; A cylinder is fixedly installed on the surface of the fixed seat through an assembly groove, and an output end of the cylinder is fixedly installed with a mounting plate; One end of the second rack is fixedly installed on the surface of the mounting plate.

8. A load simulation test device for a permanent magnet motor according to claim 1, characterized in that: The counterweight includes a rotating shaft, a box cover for inspecting the counterweight, and a bearing seat for installing the rotating shaft; Two bearing seats are fixedly installed at the tops of both ends of the test bench close to the load test box, and the inside of the counterweight is fixedly installed on the outer surface of the rotating shaft through an assembly hole; A slot is opened at one end of the rotating shaft close to the permanent magnet motor, and a correction cylinder is fixedly installed on the outer surface of the rotating shaft close to the slot; Both ends of the rotating shaft respectively pass through the inside of the load test box and the bearing seat for rotational connection; A box cover is rotatably installed on the outer surface of the load test box through a hinge.

9. A load simulation test device for a permanent magnet motor according to claim 1, characterized in that: The end cover plate includes a first magnet and a second magnet for adjusting the load force of the counterweight, and a chute, an inclined extrusion groove, and a guide rod for adjusting the position of the first magnet; A second magnet is fixedly installed on the outer surface of the counterweight through an assembly groove, and chutes are opened at both ends of the load test box; An inclined extrusion groove is penetrated and opened on the surface of the end cover plate close to the chute, and the outer surface of the guide rod is movably connected through the inside of the chute and the inclined extrusion groove; One end of the guide rod is fixedly installed with a first magnet.

10. A load simulation test device for a permanent magnet motor according to claim 9, characterized in that: The end cover plate further includes a second tooth groove and a fourth gear for rotating the end cover plate, and a movable rod, a longitudinal limiting groove, a spiral limiting groove, a limiting block for rotating the fourth gear, and a rotating part for installing the fourth gear; A second tooth groove is opened on the outer surface of the end cover plate, and a rotating part is fixedly installed on the test bench; A fourth gear matched with the second tooth groove is rotatably installed on the rotating part, and a movable rod is movably connected to the inside of the fourth gear through an assembly hole; The left end of the movable rod penetrates through the surface of the mounting table and is fixedly installed with a mounting plate, and a longitudinal limiting groove is opened on the surface of the movable rod; A spiral limiting groove is opened on the surface of the movable rod close to the longitudinal limiting groove, and a limiting block is movably connected to the inside of the spiral limiting groove; The end of the limiting block is fixedly connected to the inner wall of the assembly hole of the fourth gear.

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