A linear motor load test bench

Abstract

The present application discloses a linear motor load test bench, belonging to the technical field of linear motors. It mainly includes a test bench; a guide rail, on the top of the guide rail, a driving part is installed, and tension sensors are arranged on both sides of the driving part; a hanging rope, which is arranged on both sides of the driving part; a column, on which a track is arranged, a connecting frame is installed on the column, a load-bearing box is installed on one side of the connecting frame, and a hanging buckle is also arranged on the top of the connecting frame; a support rod, which is installed on one side of the bottom of the test bench, a load-bearing rod is arranged on the top of the support rod, a sliding table is slidably installed on the top of the load-bearing rod, and a counterweight block is installed on the sliding table; a grasping part, which includes a first sliding rail obliquely arranged on the bottom side of the test bench, and a mechanical claw is slidably installed in the first sliding rail; a falling channel. The linear motor load test bench of the present application is provided with a test component to facilitate continuous testing of the load of the linear motor, and realizes the rapid, stable loading, unloading and recycling of the counterweight block.

Description

Technical Field

[0001] This application relates to the technical field of linear motors, and specifically to a linear motor load test bench. Background Art

[0002] The working principle of a linear motor is to directly convert electrical energy into linear motion mechanical energy through electromagnetic force, without going through an intermediate conversion mechanism (such as a rotary motor and a lead screw drive). This direct drive method reduces the losses during the energy transfer process and significantly improves the accuracy and dynamic performance of the system. Existing linear motors are often used to move materials in lathe machining. For example, a material handling manipulator is installed on top of the linear motor, enabling it to move heavier materials or workpieces during machine tool machining to ensure the stability and reliability of the machining process;

[0003] Furthermore, in order to deeply understand and evaluate the operating characteristics and performance of a linear motor when moving materials in lathe machining, it is particularly important to conduct a linear motor load test. This not only helps to reveal the dynamic response, efficiency change, and stability performance of the motor under different load conditions but also provides valuable data support for the optimized design, fault prediction, and maintenance of the motor.

[0004] For example, the patent with the publication number CN213932919U specifically discloses a thrust test device for the constant-load reciprocating motion of a linear motor. By setting up guy wires and water buckets at both ends of the linear motor, water can be injected into the water buckets through a water injection pipe and drained through a water faucet according to requirements to increase or decrease the weight, and the weight data can be displayed through a tension sensor and a display;

[0005] In the above patent, the device realizes the free control of the load of the linear motor by setting two groups of water buckets with freely controllable weights at both ends of the linear motor. However, since it takes a certain amount of time for the water in the water buckets to enter and flow out, when it is necessary to adjust the load during the test, it is necessary to wait for the water volume in the water buckets to reach the required level. In test scenarios with high continuity requirements, such as those that require rapid and frequent load adjustment to simulate actual working conditions, this design will not meet the requirements. Therefore, it is necessary to provide a linear motor load test bench to solve the above problems.

[0006] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application, and therefore, it may include information that does not constitute prior art. Summary of the Invention

[0007] Based on the above problems existing in the prior art, the problem to be solved by this application is: to provide a linear motor load test bench that can achieve the effect of quickly loading and unloading the load blocks during testing.

[0008] The technical solution adopted by this application to solve its technical problems is as follows: A linear motor load test bench, including an experimental bench; a guide rail, which is installed on the experimental bench, a driving part is installed on the top of the guide rail, and the driving part is adapted to reciprocate on the top of the guide rail under the action of electromagnetic induction. Tensile sensors are arranged on both sides of the driving part; a hanging rope, which is arranged on both sides of the driving part, a fixed seat is arranged on one side of the guide rail, a pulley is installed on the top of the fixed seat, the hanging rope is in contact with the pulley, and the side of the hanging rope away from the driving part penetrates through the experimental bench and freely hangs down at the bottom of the experimental bench; a column, on which a track is arranged, a connecting frame is installed on the column, a load-bearing box is installed on one side of the connecting frame, and a hanging buckle is also arranged on the top of the connecting frame, and the hanging buckle is adapted to be connected to the hanging end of the hanging rope; a support rod, which is installed on one side of the bottom of the experimental bench, a load-bearing rod is arranged on the top of the support rod, a sliding table is slidably installed on the top of the load-bearing rod, and a counterweight is installed on the sliding table; a grasping part, which includes a first sliding rail obliquely arranged on the bottom side of the experimental bench, a mechanical claw is slidably installed in the first sliding rail, and the mechanical claw is adapted to grasp the counterweight; a falling channel, the top and bottom of which have openings, and the position of the top opening is adapted to the position of the end of the first sliding rail, and the position of the bottom opening is adapted to the position of the sliding table.

[0009] Further, the top of the load-bearing rod has a first end and a second end, the first end is close to the column, and the sliding table is arranged on the top of the second end.

[0010] Further, a support column is arranged below the load-bearing rod at the bottom of the experimental bench, and the support column is arranged on one side of the support rod.

[0011] Further, a blocking door is rotatably installed on one side of the load-bearing box close to the sliding table. The blocking door is only adapted to open towards the inner side of the load-bearing box, and a torsion spring is arranged at the connection between the blocking door and the load-bearing box.

[0012] Further, a convex block is arranged on the top of the sliding table, the size of the convex block is smaller than the size of the counterweight, a through connection groove is opened at the bottom of the load-bearing box, the width of the connection groove is smaller than the width of the load-bearing rod, and the size of the connection groove is adapted to the size of the convex block.

[0013] Further, a spring is installed on one side of the mechanical claw, and the end of the spring away from the mechanical claw is connected to the first sliding rail.

[0014] Further, two groups of second sliding rails are arranged inside the falling channel, a support plate is installed on the second sliding rails, a spring is installed between the support plate and the top end of the second sliding rails, and an electrically controllable hinge is arranged at the center of the support plate.

[0015] Further, a track is arranged on the column, and a plurality of groups of rotating wheels are rotatably installed on one side of the connecting frame close to the column, and the rotating wheels are adapted to move in the track.

[0016] Further, a simulation component is provided between the connecting frame and the load-bearing box. The simulation component includes an upper fixing block installed on the outer side of the connecting frame. A lower fixing block is installed below the upper fixing block, and a rotating groove is provided at the center of the lower fixing block. A spring is installed at the bottom of the upper fixing block, and a semi-circular rotating block is installed at the bottom of the spring. One end of the rotating block away from the connecting frame is fixedly connected to the load-bearing box. A plug rod is provided at the top of the rotating block, and a jack is provided at the bottom of the upper fixing block corresponding to the position of the plug rod.

[0017] Further, multiple groups of infrared sensors are also provided on the connecting frame.

[0018] The beneficial effects of the present application are as follows: A linear motor load test bench provided by the present application is convenient for continuously testing the load of the linear motor by setting a test component, realizing the rapid, stable loading, unloading and recycling of the counterweight block, and providing strong support for the performance test of the driving part.

[0019] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The following will refer to the drawings to make a further detailed description of the present application. Description of the Drawings

[0020] The specification drawings constituting a part of the present application are used to provide a further understanding of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0021] Figure 1 is an overall schematic diagram of a linear motor load test bench in the present application;

[0022] Figure 2 is Figure 1 an enlarged schematic diagram of part A in

[0023] Figure 3 is Figure 1 an installation schematic diagram of the counterweight assembly in

[0024] Figure 4 is Figure 3 a structural schematic diagram of the counterweight assembly in

[0025] Figure 5 is Figure 4 an internal structural schematic diagram of the load-bearing box in

[0026] Figure 6 is Figure 1 a structural schematic diagram of the grasping part in

[0027] Figure 7 is Figure 1 a structural schematic diagram of the falling channel in

[0028] Figure 8 Schematic diagram of the position of the simulation component;

[0029] Figure 9 is Figure 8 Schematic diagram of the structure of the simulation component in;

[0030] Figure 10 is Figure 9 Enlarged schematic diagram at position B in;

[0031] Among them, each reference numeral in the figure:

[0032] 1. Test bench;

[0033] 2. Test component; 21. Guide rail; 211. Feeding end; 212. Discharging end; 22. Driving part; 23. Tensile sensor; 24. Hanging rope; 25. Fixed seat; 26. Pulley;

[0034] 3. Counterweight component; 31. Column; 32. Track; 33. Load-bearing part; 331. Connecting frame; 332. Load-bearing box; 333. Hanging buckle; 34. Runner; 35. Blocking door; 36. Connecting groove;

[0035] 4. Assembly part; 41. Support rod; 42. Load-bearing rod; 421. First end; 422. Second end; 43. Slide table; 431. Protrusion; 44. Counterweight block; 45. Support column;

[0036] 5. Gripping part; 51. First slide rail; 52. Mechanical claw;

[0037] 6. Falling channel; 61. Second slide rail; 62. Support plate; 621. Hinge;

[0038] 7. Simulation component; 71. Upper fixing block; 72. Lower fixing block; 73. Rotating groove; 74. Rotating block; 75. Insert rod; 76. Infrared sensor. Detailed implementation manners

[0039] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present application in detail with reference to the drawings and in combination with the embodiments.

[0040] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0041] Embodiment 1: This embodiment specifically elaborates on the basic structure and working principle of a linear motor load test bench. Specifically:

[0042] As Figure 1 - Figure 2 shown, this application provides a linear motor load test bench, including an experimental bench 1, which is set in a motor processing factory and is used for sampling load testing of some linear motors after production. The aim is to ensure that each linear motor leaving the factory can meet the established performance standards through a strict quality control process.

[0043] A test component 2 is arranged on the top of the experimental bench 1. The test component 2 includes a guide rail 21, which is fixedly installed on the experimental bench 1. At the same time, a driving part 22 is installed on the top of the guide rail 21. The driving part 22 is adapted to reciprocate on the top of the guide rail 21 under the action of electromagnetic induction, so that the driving part 22 can simulate the moving performance of taking and feeding materials in the actual working scenario after a manipulator is installed on a traditional linear motor, thereby comprehensively evaluating its dynamic performance;

[0044] At the same time, tension sensors 23 are fixedly installed on both sides of the driving part 22. These sensors can not only capture tension data in real time, but also ensure the accuracy and reliability of the test results. And a hanging rope 24 is arranged on the tension sensor 23, and the hanging rope 24 is used to hang weights to facilitate simulating the load of the driving part 22 during operation;

[0045] At the same time, a fixed seat 25 is arranged on one side of the guide rail 21. A pulley 26 is fixedly installed on the top of the fixed seat 25, and a receiving groove is arranged at the center of the pulley 26. The size of the receiving groove is adapted to the size of the hanging rope 24. The pulley 26 is adapted to contact the hanging rope 24 and provides assistance for the subsequent movement of the hanging rope 24, which is used to reduce the friction and wear of the hanging rope 24, improve the efficiency and accuracy of the test, and the side of the hanging rope 24 away from the driving part 22 will penetrate through the experimental bench 1 and freely hang down at the bottom of the experimental bench 1;

[0046] As Figure 3 shown, in order to simulate the actual load of the motor during operation, a counterweight system is also set in this application. The counterweight system includes counterweight components 3 arranged on both sides of the bottom of the experimental bench 1. The counterweight components 3 include columns 31 fixedly installed below the experimental bench 1. A track 32 is arranged on the columns 31. At the same time, a load-bearing part 33 is installed on the columns 31. The load-bearing part 33 includes a connecting frame 331, and a bearing box 332 is fixedly installed on one side of the connecting frame 331. The bearing box 332 is used to place counterweights. At the same time, a plurality of rotating wheels 34 are rotatably installed on the side of the connecting frame 331 close to the column 31. The rotating wheels 34 are adapted to move in the track 32, so that the load-bearing part 33 is adapted to move linearly on the column 31 under the cooperation of the rotating wheels 34 and the track 32 and will not deviate from the track 32;

[0047] Meanwhile, a hanging buckle 333 is also provided on the top of the connecting frame 331. The hanging buckle 333 is adapted to be fixedly connected to one end of the hanging rope 24 that hangs down. Thus, when the driving part 22 moves on the guide rail 21, it will drive the load part 33 to move on the column 31, so as to simulate the load conditions of the motor during actual operation.

[0048] When a load test needs to be carried out on the driving part 22, first, the tester will place weights adapted to the test conditions inside the two load-bearing boxes 332 according to the test requirements. After the weights are placed, the tester will start the driving part 22. At this time, the driving part 22 will drive the two load-bearing boxes 332 to move along the track 32 through connecting components such as the hanging rope 24, the pulley 26, and the hanging buckle 333. And during this process, the tension sensor 23 will capture and record in real time the tension data borne by the driving part 22 during the movement. And the tester will closely monitor the operating state of the test bench 1, including the moving speed of the driving part 22, the stability of the load-bearing box 332, and the data change of the tension sensor 23, etc., so as to comprehensively evaluate its performance and provide strong data support for subsequent product optimization and quality control.

[0049] Embodiment 2: Since weights need to be added before testing the driving part 22, and most of the traditional ways of adding weights require manual loading and unloading of the weights, the efficiency of this loading and unloading method is relatively low. Therefore, improvements are made to the weight assembly 3. Specifically:

[0050] As Figure 1 、 Figure 4 and Figure 5 shown, an assembly part 4 is provided on one side close to the bottom of the column 31. The assembly part 4 includes a support rod 41, and the support rod 41 is fixedly installed on one side of the bottom of the test bench 1. Meanwhile, a load-bearing rod 42 is provided on the top of the support rod 41, and the load-bearing rod 42 is rotatably connected to the support rod 41 through a connecting rod. Thus, the load-bearing rod 42 and the support rod 41 form a lever structure, and the top of the load-bearing rod 42 has a first end 421 and a second end 422. Among them, the first end 421 is close to the column 31, and a sliding table 43 is slidably installed on the top of the second end 422. A flexible buffer pad is provided on the top of the sliding table 43, and a weight block 44 is placed and installed on the buffer pad. A handle suitable for external handling is provided on the top of the weight block 44. When the weight block 44 is installed on the load-bearing rod 42, the load-bearing rod 42 will tilt towards the direction of the second end 422 due to gravity;

[0051] Meanwhile, a support column 45 is also provided below the load-bearing rod 42 at the bottom of the test bench 1. The support column 45 is arranged on one side of the support rod 41. At the same time, a cushion block made of rubber is provided at the top of the support column 45. The cushion block contacts the bottom of the load-bearing rod 42 near the second end 422, so that the load-bearing rod 42 remains horizontal. Thus, when the counterweight 44 is placed at the top of the load-bearing rod 42, the load-bearing rod 42 will tilt towards the second end 422 due to gravity. At this time, the support column 45 will lift the load-bearing rod 42 and keep it horizontal.

[0052] Meanwhile, in order to enable the counterweight 44 to quickly enter the inside of the load-bearing box 332 and not slide out of the load-bearing box 332, a blocking door 35 is rotatably installed on one side of the load-bearing box 332 close to the sliding table 43. And a torsion spring is also provided at the connection between the blocking door 35 and the load-bearing box 332, so that the blocking door 35 can close the load-bearing box 332 in time when not in use. The blocking door 35 is only suitable for opening towards the inner side of the load-bearing box 332;

[0053] At the same time, a convex block 431 is also provided on the top of the sliding table 43. The convex block 431 is also made of a flexible material, and the size of the convex block 431 is smaller than the size of the counterweight 44. And a through connection groove 36 is opened at the bottom of the load-bearing box 332. The width of the connection groove 36 is smaller than the width of the load-bearing rod 42, and the size of the connection groove 36 is adapted to the size of the convex block 431.

[0054] In order to simulate the situation of the driving part 22 during actual operation, in this embodiment, the two ends of the guide rail 21 are sequentially set as the material taking end 211 and the material discharging end 212 from right to left, so as to simulate the weight change of the driving part 22 during actual application. And when the driving part 22 is in the initial position, it is at the center of the material taking end 211 and the material discharging end 212;

[0055] At the same time, since this test is used to simulate the moving performance of the driving part 22 after installing a manipulator on the top of the driving part 22, the weight of the load-bearing box 332 is greater than the weight of the counterweight 44, so that the weight of the load-bearing box 332 matches the weight of the manipulator, and the counterweight 44 matches the weight of the transported material;

[0056] When testing is required, first place the counterweight 44 that meets the experimental requirements on the top of the sliding table 43. Then start the driving part 22. At this time, the driving part 22 will move towards the material taking end 211, and then drive the load-bearing box 332 to move towards the load-bearing rod 42 through the hanging rope 24, so that the load-bearing box 332 contacts the load-bearing rod 42 and drives the load-bearing rod 42 to tilt up. At this time, the sliding table 43 located at the top of the second end 422 will move towards the first end 421 together with the counterweight 44. When the counterweight 44 contacts the blocking door 35, it will push the blocking door 35 to open inward, and the convex block 431 will enter the connecting groove 36 at the same time. Since the counterweight 44 is arranged on the top of the convex block 431, there will be a certain gap between the counterweight 44 and the sliding table 43. Therefore, when the counterweight 44 enters the load-bearing box 332, it does not contact the bottom of the load-bearing box 332. When the counterweight 44 completely enters the load-bearing box 332, the blocking door 35 will lose the thrust and reset under the drive of the torsion spring, so that it closes the load-bearing box 332 again. At this time, the assembly work of the counterweight 44 is completed;

[0057] After the driving part 22 finishes taking materials, it will move towards the unloading end 212, and then drive the load-bearing box 332 to gradually move away from the load-bearing rod 42 through the hanging rope 24. At this time, the load-bearing box 332 will contact the counterweight 44 and drive the counterweight 44 to be lifted upward, so that the counterweight 44 is separated from the convex block 431, and then the load-bearing box 332 is separated from the sliding table 43. Then the load-bearing rod 42 will return to the horizontal position, and under the influence of gravity, the sliding table 43 slidably installed above it will move to the second end 422.

[0058] As Figure 6 shown, a grasping part 5 is also provided at the top of the bottom side of the experimental table 1. The grasping part 5 includes a first sliding rail 51 inclinedly arranged at the bottom side of the experimental table 1. A mechanical claw 52 is slidably installed in the first sliding rail 51. The mechanical claw 52 is used to grasp the counterweight 44. A spring is fixedly installed on one side of the mechanical claw 52. The end of the spring away from the mechanical claw 52 is fixedly connected to the first sliding rail 51;

[0059] When the driving part 22 moves to the unloading end 212, the load-bearing box 332 will synchronously reach the bottom of the grasping part 5. At this time, the mechanical claw 52 will grasp and fix the counterweight 44 inside the load-bearing box 332. Then the driving part 22 will move towards the material taking end 211 again. At this time, the counterweight 44 will be separated from the load-bearing box 332. And because the first sliding rail 51 is inclinedly arranged, the mechanical claw 52 will drive the counterweight 44 to move away from the column 31 under the action of gravity until it moves to the end of the first sliding rail 51;

[0060] As Figure 7As shown, a falling channel 6 is also provided on one side of the column 31. The falling channel 6 is used to send the counterweight 44 back to the initial position. Both the top and the bottom of the falling channel 6 have openings. The position of the top opening is adapted to the tail end position of the first slide rail 51, and the position of the bottom opening is adapted to the position of the slide table 43. At the same time, two groups of second slide rails 61 are arranged inside the falling channel 6. A support plate 62 is slidably mounted on the second slide rails 61, and a spring (not shown in the figure) is also mounted between the top end of the support plate 62 and the second slide rails 61. The support plate 62 is used to lift the bottom of the counterweight 44, and an electrically controllable hinge 621 is provided at the center of the support plate 62. When the counterweight 44 reaches the bottom of the falling channel 6, the hinge 621 will bend, causing the counterweight 44 to fall from the falling channel 6, and the support plate 62 will reset under the action of the spring;

[0061] Furthermore, when the driving part 22 gradually moves towards the discharging end 212, the mechanical claw 52 will drive the counterweight 44 to move away from the column 31 under the action of gravity. When the mechanical claw 52 reaches the top of the falling channel 6, it will release the counterweight 44. At this time, the counterweight 44 will enter the inside of the falling channel 6 and contact the support plate 62. At this time, the mechanical claw 52 will reset under the action of the spring. Subsequently, the two counterweights 44 and the support plate 62 will move towards the bottom of the falling channel 6 under the influence of gravity. And when the counterweight 44 reaches the bottom of the falling channel 6, the hinge 621 will bend, causing the counterweight 44 to break away from the falling channel 6 and reach the top of the slide table 43 again. At this time, the two support plates 62 will reset under the action of the spring, facilitating subsequent continuous testing, realizing the rapid, stable loading, unloading and recycling of the counterweight 44, and providing strong support for the performance test of the driving part 22.

[0062] Embodiment 3: In actual use of the robotic arm, if it transports materials with a relatively high weight, its grasping end may shake slightly. To simulate this action, improvements are made to the load-bearing part 33. Specifically:

[0063] As Figure 8 - Figure 10 shown, a simulation component 7 is provided between the connecting frame 331 and the load-bearing box 332. The simulation component 7 includes an upper fixing block 71, which is fixedly installed on the outside of the connecting frame 331. At the same time, a lower fixing block 72 is fixedly installed below the upper fixing block 71. A rotating groove 73 is provided at the center of the lower fixing block 72, and the rotating groove 73 allows the load-bearing box 332 to have a certain rotating space when loading heavy objects. At the same time, a spring is fixedly installed at the bottom of the upper fixing block 71, and a semi-circular rotating block 74 is fixedly installed at the bottom of the spring. The spring plays a role of buffering and restoring, enabling the rotating block 74 to return to the initial position when not subjected to external forces.

[0064] The end of the rotating block 74 away from the connecting frame 331 is fixedly connected to the load-bearing box 332, and multiple groups of plug rods 75 are arranged on the top of the rotating block 74, and multiple groups of plug holes (not shown in the figure) are arranged at the bottom of the upper fixed block 71 corresponding to the positions of the plug rods 75;

[0065] The connecting frame 331 is also provided with a plurality of infrared sensors 76, which are used to detect the movement changes of the load-bearing box 332;

[0066] When the counterweight 44 is not loaded in the load-bearing box 332, the rotating block 74 will move away from the lower fixed block 72 under the action of the spring, and the insertion rod 75 will enter the inside of the insertion hole. When the counterweight 44 is loaded in the load-bearing box 332, the load-bearing box 332 will drive the rotating block 74 to enter the rotating groove 73. At this time, if the counterweight 44 is slightly displaced in the load-bearing box 332, the load-bearing box 332 will rotate around the rotating block 74. At this time, the rotation amplitude and rotation speed of the load-bearing box 332 will be recorded and uploaded by the infrared sensor 76, thereby more realistically simulating the shaking of the material-grabbing robot arm when taking out materials, transporting materials and putting down materials, helping to make improvements in subsequent product production and manufacturing.

[0067] To sum up, by setting up the simulation component 7, the shaking information of the driving unit 22 when transporting heavy objects after the mechanical arm is installed can be effectively simulated during the test, which helps to provide strong data support for subsequent improvements and optimizations. At the same time, the application of the infrared sensor 76 also enables the staff to accurately capture and record the movement data of the load-bearing box 332, providing reference information for the improvement of the driving unit 22.

[0068] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A linear motor load test bench, characterized in that: include: Experimental bench (1); A guide rail (21), the guide rail (21) being mounted on the experimental table (1), and a driving unit (22) being mounted on the top of the guide rail (21), and tension sensors (23) being arranged on both sides of the driving unit (22); A hanging rope (24), the hanging rope (24) being arranged on both sides of the driving part (22), a fixing seat (25) being arranged on one side of the guide rail (21), a pulley (26) being installed on the top of the fixing seat (25), the hanging rope (24) being in contact with the pulley (26), and a side of the hanging rope (24) away from the driving part (22) passing through the experimental table (1) and hanging down at the bottom of the experimental table (1); A column (31), wherein a track (32) is arranged on the column (31), a connecting frame (331) is installed on the column (31), a load-bearing box (332) is installed on one side of the connecting frame (331), and a hanging buckle (333) is also arranged on the top of the connecting frame (331), and the hanging buckle (333) is suitable for connecting with one end of the hanging rope (24); An assembly portion (4) is provided on one side of the bottom of the column (31), the assembly portion (4) comprising a support rod (41), the support rod (41) being mounted on one side of the bottom of the experimental table (1), a load-bearing rod (42) being provided on the top of the support rod (41), a slide table (43) being slidably mounted on the top of the load-bearing rod (42), and a counterweight block (44) being mounted on the slide table (43); A gripping portion (5), the gripping portion (5) comprising a first slide rail (51) obliquely arranged on the bottom side of the experimental table (1), a mechanical claw (52) being slidably mounted in the first slide rail (51); A falling channel (6), the falling channel (6) having openings at the top and the bottom, wherein the position of the top opening matches the position of the tail end of the first slide rail (51), and the position of the bottom opening matches the position of the slide platform (43); A blocking door (35) is rotatably mounted on one side of the load-bearing box (332) close to the slide (43); the blocking door (35) is only suitable for opening toward the inner side of the load-bearing box (332); a torsion spring is provided at the connection between the blocking door (35) and the load-bearing box (332); A plurality of sets of rotating wheels (34) are rotatably mounted on one side of the connecting frame (331) close to the upright column (31), and the rotating wheels (34) are suitable for moving within the track (32).

2. A linear motor load test bench according to claim 1, characterized in that: The top of the load-bearing rod (42) comprises a first end (421) and a second end (422), the first end (421) is close to the column (31), and the slide (43) is arranged on the top of the second end (422).

3. A linear motor load test bench according to claim 2, characterized in that: A support column (45) is provided at the bottom of the experimental platform (1) below the load-bearing rod (42), and the support column (45) is provided on one side of the support rod (41).

4. A linear motor load test bench according to claim 3, characterized in that: A protrusion (431) is provided on the top of the slide (43), the size of the protrusion (431) is smaller than the size of the counterweight (44), a through connecting groove (36) is provided on the bottom of the load-bearing box (332), the width of the connecting groove (36) is smaller than the width of the load-bearing rod (42), and the size of the connecting groove (36) is matched with the size of the protrusion (431).

5. The linear motor load test bench according to claim 1, characterized in that: A spring is installed on one side of the mechanical claw (52), and one end of the spring away from the mechanical claw (52) is connected to the first slide rail (51).

6. A linear motor load test bench according to claim 1, characterized in that: Two sets of second slide rails (61) are arranged inside the falling channel (6), a support plate (62) is installed on the second slide rail (61), a spring is installed between the support plate (62) and the top end of the second slide rail (61), and an electrically controllable hinge (621) is arranged at the center of the support plate (62).

7. The linear motor load test bench according to claim 1, characterized in that: A simulation component (7) is provided between the connecting frame (331) and the load-bearing box (332), the simulation component (7) comprising an upper fixing block (71), the upper fixing block (71) being mounted on the outside of the connecting frame (331), a lower fixing block (72) being mounted below the upper fixing block (71), and a rotation groove (73) being provided at the center of the lower fixing block (72); A spring is installed at the bottom of the upper fixed block (71), and a semicircular rotating block (74) is installed at the bottom of the spring. The end of the rotating block (74) away from the connecting frame (331) is fixedly connected to the load-bearing box (332). An insertion rod (75) is arranged at the top of the rotating block (74), and a plug hole is arranged at the bottom of the upper fixed block (71) at a position corresponding to the insertion rod (75).

8. A linear motor load test bench according to claim 7, characterized in that: The connecting frame (331) is also provided with a plurality of groups of infrared sensors (76).

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