Linear motor load test bench

Abstract

The invention discloses a linear motor load test bench, and belongs to the technical field of linear motors. The device mainly comprises an experiment table; a driving part is installed at the top of the guide rail, and tension sensors are arranged on the two sides of the driving part; the hanging ropes are arranged on the two sides of the driving part; a rail is arranged on the stand column, a connecting frame is installed on the stand column, a bearing box is installed on one side of the connecting frame, and a hanging buckle is further arranged on the top of the connecting frame; the supporting rod is installed on one side of the bottommost part of the experiment table, a bearing rod is arranged on the top of the supporting rod, a sliding table is installed on the top of the bearing rod in a sliding mode, and a balancing weight is installed on the sliding table; the grabbing part comprises a first sliding rail which is obliquely arranged on the bottom side of the experiment table, and a mechanical claw is installed in the first sliding rail in a sliding mode; and a falling channel. According to the linear motor load test bench, the test assembly is arranged so that the load of the linear motor can be continuously tested, and rapid and stable loading, unloading and recovery of the balancing weight are realized.

Description

Technical Field

[0001] The present application relates to the technical field of linear motors, and in particular 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 loss during energy transfer and significantly improves the accuracy and dynamic performance of the system. Existing linear motors are often used to move materials in lathe processing. For example, a material handling robot can be installed on the top of the linear motor so that it can be used to move heavier materials or workpieces during machine tool processing, ensuring the stability and reliability of the processing process. Furthermore, in order to deeply understand and evaluate the operating characteristics and performance of linear motors in moving materials during lathe processing, it is particularly important to conduct linear motor load tests, which not only helps to reveal the dynamic response, efficiency changes and stability performance of the motor under different load conditions, but also provides valuable data support for the optimal design, fault prediction and maintenance of the motor.

[0003] For example, the patent with publication number CN213932919U specifically discloses a thrust test device for constant load reciprocating motion of a linear motor. By setting a pull line and a water bucket on the water buckets at both ends of the linear motor, the weight can be increased or decreased by injecting water into the water bucket through a water injection pipe and draining water from a tap according to demand. The weight data can be displayed through a tension sensor and a display. In the above patent, the device realizes free control of the load of the linear motor by setting two groups of buckets with freely controllable weight at both ends of the linear motor. However, since it takes a certain amount of time for the water in the bucket to enter and flow out, when the load needs to be adjusted during the test, it is necessary to wait for the water level in the bucket to reach the required level. In test scenarios with high continuity requirements, such as fast and frequent load adjustments to simulate actual working conditions, this design will not be able to meet the needs. Therefore, it is necessary to provide a linear motor load test bench to solve the above problems.

[0004] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0005] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a linear motor load test bench to achieve the effect of quickly loading and unloading the load block during the test.

[0006] The technical solution adopted by the present application to solve its technical problems is: a linear motor load test bench, including a test bench; a guide rail, which is installed on the test bench, a driving part is installed on the top of the guide rail, the driving part is suitable for reciprocating on the top of the guide rail under the action of electromagnetic induction, 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 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 passes through the test bench and freely hangs at the bottom of the test bench; a column, on which a track is arranged, a connecting frame is installed on the column, and one side of the connecting frame is connected to the connecting frame. A load-bearing box is installed on the side, and a hanging buckle is also arranged on the top of the connecting frame, which is suitable for connecting with one end of the hanging rope; a support rod, which is installed on the bottom side of the experimental table, and a load-bearing rod is arranged on the top of the support rod, and a slide is slidably installed on the top of the load-bearing rod, and a counterweight block is installed on the slide; a grasping part, which includes a first slide rail obliquely arranged on the bottom side of the experimental table, and a mechanical claw is slidably installed in the first slide rail, and the mechanical claw is suitable for grasping the counterweight block; a falling channel, the top and bottom of the falling channel are both provided with openings, and the position of the top opening is adapted to the tail end position of the first slide rail, and the position of the bottom opening is adapted to the position of the slide.

[0007] Furthermore, 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 slide is arranged on the top of the second end.

[0008] Furthermore, a support column is provided at the bottom of the experimental platform below the load-bearing rod, and the support column is provided on one side of the support rod.

[0009] Furthermore, a blocking door is rotatably installed on one side of the load-bearing box close to the slide, and the blocking door is only suitable for opening toward the inner side of the load-bearing box. A torsion spring is provided at the connection between the blocking door and the load-bearing box.

[0010] Furthermore, a protrusion is provided on the top of the slide, the size of the protrusion is smaller than the size of the counterweight block, and a through connecting groove is opened at the bottom of the load-bearing box, the width of the connecting groove is smaller than the width of the load-bearing rod, and the size of the connecting groove is adapted to the size of the protrusion.

[0011] Furthermore, a spring is installed on one side of the mechanical claw, and one end of the spring away from the mechanical claw is connected to the first slide rail.

[0012] Furthermore, two sets of second slide rails are arranged inside the falling channel, support plates are installed on the second slide rails, springs are installed between the support plates and the top ends of the second slide rails, and an electrically controllable hinge is arranged at the center of the support plates.

[0013] Furthermore, a track is arranged on the column, and a plurality of sets of rotating wheels are rotatably mounted on one side of the connecting frame close to the column, and the rotating wheels are suitable for moving in the track.

[0014] Furthermore, a simulation component is arranged between the connecting frame and the load-bearing box, and the simulation component includes an upper fixed block, which is installed on the outer side of the connecting frame, a lower fixed block is installed below the upper fixed block, and a rotating groove is arranged at the center of the lower fixed block; a spring is installed at the bottom of the upper fixed block, and a semicircular rotating block is installed at the bottom of the spring, and the end of the rotating block away from the connecting frame is fixedly connected to the load-bearing box, a plug rod is arranged on the top of the rotating block, and a socket is arranged at the bottom of the upper fixed block corresponding to the position of the plug rod.

[0015] Furthermore, a plurality of groups of infrared sensors are arranged on the connecting frame.

[0016] The beneficial effects of the present application are as follows: a linear motor load test bench provided by the present application, by setting up a test component, facilitates continuous testing of the load of the linear motor, realizes rapid and stable loading and unloading and recovery of the counterweight block, and provides strong support for the performance test of the drive unit.

[0017] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 This is an overall schematic diagram of a linear motor load test bench in this application; Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle; Figure 3 for Figure 1 Installation diagram of the middle counterweight assembly; Figure 4 for Figure 3 A schematic diagram of the structure of the middle counterweight assembly; Figure 5 for Figure 4 Schematic diagram of the internal structure of the middle load-bearing box; Figure 6 for Figure 1 The structural diagram of the middle grabbing part; Figure 7 for Figure 1 Structural schematic diagram of the middle and lower falling channels; Figure 8 It is a schematic diagram of the locations of the simulation components; Fig. 9 for Figure 8 Schematic diagram of the structure of the simulation components; Fig.10 for Fig. 9 The enlarged schematic diagram of point B in the middle; Among them, the reference numerals in the figure are: 1. Experimental bench; 2. Test assembly; 21. Guide rail; 211. Material taking end; 212. Material discharging end; 22. Driving unit; 23. Tension sensor; 24. Hanging rope; 25. Fixed seat; 26. Pulley; 3. Counterweight assembly; 31. Column; 32. Track; 33. Load-bearing part; 331. Connecting frame; 332. Load-bearing box; 333. Hook; 34. Rotating wheel; 35. Blocking door; 36. Connecting slot; 4. Assembly part; 41. Support rod; 42. Load-bearing rod; 421. First end; 422. Second end; 43. Slide; 431. Boss; 44. Counterweight; 45. Support column; 5. Grasping part; 51. First slide rail; 52. Mechanical claw; 6. Falling channel; 61. Second slide rail; 62. Support plate; 621. Hinge; 7. Simulation component; 71. Upper fixed block; 72. Lower fixed block; 73. Rotation slot; 74. Rotation block; 75. Insertion rod; 76. Infrared sensor. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution 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 part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0021] Embodiment 1: This embodiment specifically describes the basic structure and working principle of the linear motor load test bench, specifically: like Figure 1-Figure 2 As shown, the present application provides a linear motor load test bench, including a test bench 1, which is set in a motor processing plant and is used to perform sampling load tests on some linear motors after production. It aims to ensure that every linear motor leaving the factory can meet the established performance standards through a strict quality control process.

[0022] A test assembly 2 is provided on the top of the experimental table 1. The test assembly 2 includes a guide rail 21, which is fixedly mounted on the experimental table 1. A driving unit 22 is installed on the top of the guide rail 21. The driving unit 22 is suitable for reciprocating on the top of the guide rail 21 under the action of electromagnetic induction, so that the driving unit 22 can simulate the movement performance of the traditional linear motor in picking up and feeding materials in the actual working scene after the manipulator is installed, so as to comprehensively evaluate its dynamic performance; 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. A hanging rope 24 is arranged on the tension sensor 23. The hanging rope 24 is used to hang a counterweight to simulate the load of the driving part 22 when working. At the same time, a fixing seat 25 is provided on one side of the guide rail 21, a pulley 26 is fixedly installed on the top of the fixing seat 25, and a receiving groove is provided 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 suitable for contacting with the hanging rope 24, and providing assistance for the subsequent movement of the hanging rope 24, so as to reduce the friction and wear of the hanging rope 24, thereby improving the efficiency and accuracy of the test, and the side of the hanging rope 24 away from the driving part 22 will penetrate the experimental table 1 and freely hang down at the bottom of the experimental table 1; like Figure 3 As shown, in order to simulate the actual load of the motor when working, a counterweight system is also provided in the present application, and the counterweight system includes a counterweight assembly 3 arranged on both sides of the bottom of the experimental table 1, and the counterweight assembly 3 includes a column 31 fixedly installed below the experimental table 1, and a track 32 is arranged on the column 31, and a load-bearing part 33 is installed on the column 31, and the load-bearing part 33 includes a connecting frame 331, and a load-bearing box 332 is fixedly installed on one side of the connecting frame 331, and the load-bearing box 332 is used to place the counterweight, and at the same time, a plurality of groups of rotating wheels 34 are rotatably installed on one side of the connecting frame 331 close to the column 31, and the rotating wheels 34 are suitable for moving in the track 32, so that the load-bearing part 33 is suitable for moving 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; At the same time, a hook 333 is provided on the top of the connecting frame 331, and the hook 333 is suitable for being fixedly connected to one end of the hanging rope 24, so that when the driving part 22 moves on the guide rail 21, it will drive the load-bearing part 33 to move on the column 31, thereby simulating the load condition of the motor in actual work.

[0023] When it is necessary to perform a load test on the driving unit 22, the tester will first place counterweights that are compatible with the test conditions inside the two sets of load-bearing boxes 332 according to the test requirements. After the counterweights are placed, the tester will start the driving unit 22. At this time, the driving unit 22 will drive the two sets of 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. In this process, the tension sensor 23 will capture and record the tension data that the driving unit 22 is borne during the movement in real time. The tester will pay close attention to the operating status of the test bench 1, including the moving speed of the driving unit 22, the stability of the load-bearing box 332, and the data changes of the tension sensor 23, so as to comprehensively evaluate its performance and provide strong data support for subsequent product optimization and quality control.

[0024] Embodiment 2: Since it is necessary to add a counterweight before testing the driving unit 22, and the conventional method of adding a counterweight mostly requires manual loading and unloading of the counterweight, which is inefficient. Therefore, improvements are made to the counterweight assembly 3, specifically: like Figure 1 , Figure 4 and Figure 5 As shown, an assembly part 4 is provided on one side close to the bottom of the column 31, and 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 experimental table 1, and a load-bearing rod 42 is provided on the top of the support rod 41, and the load-bearing rod 42 and the support rod 41 are rotatably connected by a connecting rod, so that 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, wherein the first end 421 is close to the column 31, and a slide 43 is slidably installed on the top of the second end 422, and a flexible buffer pad is provided on the top of the slide 43, and a counterweight block 44 is placed and installed on the buffer pad, and a handle suitable for external carrying is provided on the top of the counterweight block 44, and when the counterweight block 44 is installed on the load-bearing rod 42, the load-bearing rod 42 will tilt toward the direction of the second end 422 due to gravity; At the same time, a support column 45 is provided at the bottom of the experimental table 1 below the load-bearing rod 42. The support column 45 is provided on one side of the support rod 41. At the same time, a rubber pad is provided on the top of the support column 45. The pad is in contact with the bottom of the load-bearing rod 42 near the second end 422, so that the load-bearing rod 42 remains in a horizontal state. When the counterweight 44 is placed on the top of the load-bearing rod 42, the load-bearing rod 42 will tilt toward 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.

[0025] At the same time, in order to allow the counterweight 44 to quickly enter 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 slide 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, and the blocking door 35 is only suitable for opening toward the inner side of the load-bearing box 332; At the same time, a protrusion 431 is also arranged on the top of the slide 43. The protrusion 431 is also made of a flexible material, and the size of the protrusion 431 is smaller than the size of the counterweight 44. A through connecting groove 36 is opened at 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 adapted to the size of the protrusion 431.

[0026] In order to simulate the actual operation of the driving unit 22, in this embodiment, the two ends of the guide rail 21 are set as the material taking end 211 and the material discharging end 212 from right to left, thereby simulating the weight change of the driving unit 22 in actual application, and the driving unit 22 is located at the center of the material taking end 211 and the material discharging end 212 when it is in the initial position; At the same time, since this test is used to simulate the mobility of the driving unit 22 after a manipulator is installed on the top of the driving unit 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; When a test is required, first place a counterweight 44 that meets the experimental requirements on the top of the slide 43, then start the drive unit 22, and the drive unit 22 will move toward the material-collecting end 211, and then drive the load-bearing box 332 to move toward 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 slide 43 located at the top of the second end 422 will move together with the counterweight 44 toward the first end 421, and when the counterweight 44 contacts the blocking door 35, the slide 43 will move toward the first end 421. When the cam 431 is touched, the blocking door 35 is pushed to open inward, and the protrusion 431 enters the connecting groove 36 at the same time. Since the counterweight 44 is arranged on the top of the protrusion 431, a certain gap is generated between the counterweight 44 and the slide 43, and then 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 loses its thrust and is reset under the drive of the torsion spring, so that it closes the load-bearing box 332 again. At this time, the assembly of the counterweight 44 is completed. Then, after the driving part 22 finishes picking up the materials, it will move toward 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 block 44 and drive the counterweight block 44 to be lifted upward, so that the counterweight block 44 is separated from the protrusion 431, and then the load-bearing box 332 is separated from the slide 43, and then the load-bearing rod 42 will return to a horizontal position, and under the influence of gravity, the slide 43 slidably installed above it will move to the second end 422.

[0027] like Figure 6 As shown, a gripping portion 5 is also provided at the top of the bottom side of the experimental table 1, and the gripping portion 5 includes a first slide rail 51 obliquely provided at the bottom side of the experimental table 1, and a mechanical claw 52 is slidably installed in the first slide rail 51, and the mechanical claw 52 is used to grab the counterweight 44, and a spring is fixedly installed on one side of the mechanical claw 52, ​​and one end of the spring away from the mechanical claw 52 is fixedly connected to the first slide rail 51; When the driving part 22 moves to the discharge end 212, the load-bearing box 332 will synchronously reach the bottom of the grabbing part 5, and the mechanical claw 52 will grab and fix the counterweight 44 inside the load-bearing box 332, and then the driving part 22 will move toward the material-collecting end 211 again, and the counterweight 44 will be separated from the load-bearing box 332. Since the first slide rail 51 is inclined, 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 tail end of the first slide rail 51. like Figure 7 As shown, a falling channel 6 is also provided on one side of the column 31, and the falling channel 6 is used to return the counterweight 44 to the initial position. The top and bottom of the falling channel 6 are both provided with openings, and 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 43. At the same time, two sets of second slide rails 61 are provided inside the falling channel 6, and a support plate 62 is slidably installed on the second slide rail 61, and a spring (not shown in the figure) is also installed between the support plate 62 and the top of the second slide rail 61, and 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, so that the counterweight 44 falls from the falling channel 6, and the support plate 62 will be reset under the action of the spring; Then, when the driving part 22 gradually moves toward the unloading end 212, the mechanical claw 52 will drive the counterweight block 44 to move in the direction 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 block 44. At this time, the counterweight block 44 will enter the interior 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 groups of counterweight blocks 44 and the support plate 62 will move toward the bottom of the falling channel 6 under the influence of gravity. When the counterweight block 44 reaches the bottom of the falling channel 6, the hinge 621 will bend, so that the counterweight block 44 will detach from the falling channel 6 and reach the top of the slide 43 again. At this time, the two groups of support plates 62 will reset under the action of the spring to facilitate subsequent continuous testing, thereby realizing fast and stable loading and unloading and recovery of the counterweight block 44, providing strong support for the performance test of the driving part 22.

[0028] Embodiment 3: In actual use, when the robot arm is transporting heavy materials, its gripping end may shake slightly. In order to simulate this action, improvements are made to the load-bearing part 33, specifically: like Figure 8 - Fig.10 As shown, a simulation component 7 is provided between the connecting frame 331 and the load-bearing box 332, and the simulation component 7 includes an upper fixed block 71, which is fixedly installed on the outside of the connecting frame 331, and a lower fixed block 72 is fixedly installed below the upper fixed block 71, and a rotation groove 73 is provided at the center of the lower fixed block 72, and the rotation groove 73 allows the load-bearing box 332 to have a certain rotation space when loading heavy objects. At the same time, a spring is fixedly installed at the bottom of the upper fixed block 71, and a semicircular rotation block 74 is fixedly installed at the bottom of the spring. The spring plays a role of buffering and recovery, so that the rotation block 74 can return to the initial position when not subject to external force.

[0029] 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; 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; 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.

[0030] 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.

[0031] 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); A support rod (41), the support rod (41) being mounted on one side of the bottom of the experimental platform (1), a load-bearing rod (42) being arranged 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 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).

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 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 in the inner direction of the load-bearing box (332); and a torsion spring is provided at the connection between the blocking door (35) and the load-bearing box (332).

5. A linear motor load test bench according to claim 4, 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).

6. A 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).

7. The 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).

8. The linear motor load test bench according to claim 1, characterized in that: A track (32) is arranged on the column (31), and a plurality of sets of rotating wheels (34) are rotatably mounted on a side of the connecting frame (331) close to the column (31), wherein the rotating wheels (34) are suitable for moving within the track (32).

9. 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).

10. A linear motor load test bench according to claim 9, characterized in that: The connecting frame (331) is also provided with a plurality of groups of infrared sensors (76).

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