A new energy automobile motor performance test tool

Abstract

The utility model discloses a new energy automobile motor performance test frock relates to new energy automobile motor performance test technical field, including bottom plate, first mobile unit and second mobile unit, the right part fixedly connected with control cabinet in bottom plate upper end rear side, and the first mobile unit is installed on the bottom plate upper end, and the second mobile unit contains moving platform, installation slot, dovetail type sliding seat no.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle motor performance testing technology, specifically a new energy vehicle motor performance testing fixture. Background Technology

[0002] New energy vehicles refer to automobiles that use unconventional vehicle fuels as a power source (or use conventional vehicle fuels and adopt new on-board power devices), and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include four major types: hybrid electric vehicles (HEV), pure electric vehicles (BEV, including solar-powered vehicles), fuel cell electric vehicles (FCEV), and other new energy vehicles (such as supercapacitors, flywheels, and other high-efficiency energy storage devices). Among the existing technologies, the new energy vehicle motor performance testing fixture proposed in the authorization announcement number CN112305420A includes a drive mechanism, which is fixedly connected to the right side of the top surface of the testing fixture. Existing technologies cannot fix test motors of different sizes, and when test motors need to be moved, they cannot be moved with high precision by the device. Therefore, we propose a new energy vehicle motor performance testing fixture. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a new energy vehicle motor performance testing fixture that can fix test motors of different sizes and can drive the test motor to move with high precision when it needs to be moved, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a performance testing fixture for a new energy vehicle motor, comprising a base plate, a first moving unit, and a second moving unit; Base plate: A control console is fixedly connected to the upper rear right side, and the first moving unit is installed on the upper part of the base plate; The second moving unit includes a moving platform, a mounting groove, a dovetail-shaped slide block 1, a dovetail-shaped slider 2, a connecting block, a connecting strip, a moving block, a fixing plate 1, an anti-slip rubber pad 1, an adjusting threaded rod 1, and a self-locking motor 2. The upper center of the base plate has a mounting groove. The lower inner side of the mounting groove is fixedly connected to the dovetail-shaped slide block 1. The dovetail-shaped slider 2 is slidably connected to the inner side of the dovetail-shaped slide block 1. The lower end of the dovetail-shaped slider 2 is fixedly connected to the connecting block. The inner side of the mounting groove is rotatably connected to the adjusting threaded rod 1. The inner side of the moving block is threadedly connected to the adjusting threaded rod 1. Both ends of the connecting strip are rotatably connected to one end of the connecting block and the moving block, respectively. The upper outer side of the dovetail-shaped slider 2 is slidably connected to the moving platform. The upper end of the dovetail-shaped slider 2 is fixedly connected to the fixing plate 1. The inner side of the fixing plate 1 is fixedly connected to the anti-slip rubber pad 1 by bolts. The middle rear end of the moving platform is fixedly connected to the self-locking motor 2, which is fixedly connected to the adjusting threaded rod 1. The self-locking motor 2 drives the adjusting threaded rod 1 to rotate, which in turn moves the moving block. Through the connecting strip, the dovetail slider 2 slides along the dovetail slide seat 1, so that the fixing plate 1 clamps the motor. The anti-slip rubber pad 1 increases friction to prevent displacement. The dovetail slide seat 1 and the slider 2 provide high-precision lateral positioning. The self-locking motor 2 ensures clamping stability. The adjusting threaded rod 1 achieves stepless adjustment. The anti-slip rubber pad 1 can fix motors of different sizes.

[0005] Furthermore, the second moving unit also includes a dovetail-shaped slide and a rack. The dovetail-shaped slide is fixedly connected to both ends of the moving platform, and a rack is fixedly connected to the right side of the right dovetail-shaped slide. The dovetail-shaped slide and the rack are fixed to one side of the moving platform. The rack meshes with a gear, and longitudinal fine-tuning of the moving platform is achieved through gear transmission. The meshing of the rack and gear provides high transmission accuracy, and the dovetail-shaped slide enhances the longitudinal stability of the moving platform.

[0006] Furthermore, the second moving unit also includes sliding blocks and second limiting slots. Two second limiting slots are formed on the upper front side of the moving platform, and four sliding blocks are fixedly connected to the four corners of the lower end of the moving platform. The second limiting slots slide in engagement with the sliding blocks to prevent displacement during motor testing. The second limiting slots are adapted to the arched mounting bracket to enhance structural rigidity.

[0007] Furthermore, the first moving unit also includes a self-locking hydraulic press, a protective cover, a dovetail-shaped slider, a limiting groove, a limiting rod, and an electromagnetic device. A self-locking hydraulic press is fixedly connected to the upper left front end of the base plate. A corner of the protective cover is fixedly connected to the upper end of the self-locking hydraulic press. Dovetail-shaped sliders are fixedly connected to the lower inner side of the protective cover, and are slidably connected to dovetail-shaped slide blocks. Limiting grooves are correspondingly formed on the left and right sides of the upper middle part of the base plate. Electromagnetic devices are fixedly connected to the remaining triangular sections of the protective cover. A limiting rod is slidably connected to the inner side of the electromagnetic device, and the lower end of the limiting rod is fixedly connected to the moving platform. The self-locking hydraulic press pushes the protective cover up and down. The dovetail-shaped slider slides along the dovetail-shaped slide block, and the electromagnetic device attracts the limiting rod to lock the height of the protective cover. The self-locking hydraulic press provides powerful lifting and lowering, the electromagnetic device quickly locks the protective cover, and the dovetail-shaped slider ensures precise lifting and lowering trajectory.

[0008] Furthermore, the first moving unit also includes a gear, a self-locking motor, and a motor mounting bracket. The motor mounting bracket is fixedly connected to the right inner side of the protective cover, and the self-locking motor is fixedly connected to the upper end of the motor mounting bracket. A gear is rotatably connected to the right inner side of the protective cover, and the output shaft of the self-locking motor is fixedly connected to the gear. The self-locking motor drives the gear to mesh with the rack, causing the protective cover to move longitudinally along the moving platform. The meshing of the gear and rack enables micro-distance movement. The self-locking motor self-locks when powered off to prevent accidental displacement, and the motor mounting bracket enhances transmission stability.

[0009] Furthermore, it also includes an arched mounting bracket, a second fixed plate, a second adjusting threaded rod, a telescopic rod, a second anti-slip rubber pad, a threaded rod, and a bottom fixed plate. The arched mounting bracket is fixedly connected to the front upper side of the bottom plate. The arched mounting bracket is slidably connected to the inner side of the second limiting groove. An adjusting threaded rod is threadedly connected to the middle of the upper end of the arched mounting bracket. Another adjusting threaded rod is threadedly connected to the moving platform. The rear end of the second fixed plate is rotatably connected to one end of the second adjusting threaded rod. One end of the telescopic rod is fixedly connected to the rear end of the second fixed plate. The arched mounting bracket and the moving platform are respectively fixedly connected to the other end of the telescopic rod. An anti-slip rubber pad is fixedly connected to the front end of the second fixed plate by bolts. The front end of the moving platform is slidably connected to the bottom fixed plate. The threaded rod is rotatably connected to the moving platform and threadedly connected to the bottom fixed plate. The adjustment threaded rod rotates to push the fixed plate 2 to move, the telescopic rod keeps the fixed plate 2 horizontal, the threaded rod drives the bottom fixed plate to slide and clamp the motor, the anti-slip rubber pad 2 prevents slippage, and the anti-slip rubber pad 2 can be replaced to fix motors of different sizes. The adjustment threaded rod 2 and the telescopic rod work together to achieve multi-directional adjustment, and the bottom fixed plate and the anti-slip rubber pad 2 form a bottom fixation, which can be adapted to motors of different sizes.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This new energy vehicle motor performance testing fixture has the following advantages: 1. This new energy vehicle motor performance testing fixture uses a motor mounting bracket to drive a gear to rotate. The gear meshes with a rack and pinion to control the movement of the moving platform. The motor drives automated adjustment, and the gear and rack transmission has high precision, reducing manual intervention, improving testing efficiency, and accelerating the replacement efficiency of the test motor. The hydraulic power achieves stable lifting and lowering, and the height of the test motor is moved by a hydraulic press. The device can drive the test motor to move with high precision when it needs to be moved.

[0011] 2. This new energy vehicle motor performance testing fixture uses an adjustable threaded rod to rotate and drive a moving block. The moving block moves laterally along the dovetail-shaped slide block 1 via a connecting strip, causing the dovetail-shaped slider 2 to slide against the fixed plate. The fixed plate clamps the motor with anti-slip rubber pads. The threaded adjustment precisely controls the clamping position, the dovetail structure ensures movement stability, and the anti-slip rubber pads prevent damage to the motor surface. It is compatible with motors of different sizes and can fix test motors of different sizes.

[0012] The hydraulic press is required to synchronously lift the protective cover, driving the dovetail-shaped slider one to rise and fall vertically along the dovetail-shaped slide two. The hydraulic power achieves stable lifting and lowering. The protective cover protects the internal mechanism. Multiple hydraulic presses can be used synchronously to avoid uneven load. The height of the test motor can be moved by the hydraulic press, so that the rotor height of the test motor can be kept at the same height when testing different motors. It can fix different test motors, and the rotation shaft of motors of different sizes can be coaxial with the test equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the inner structure of this utility model; Figure 3 This is a schematic diagram of a partial inner structure of the present invention.

[0014] In the diagram: 1. Base plate, 2. Control console, 3. First moving unit, 31. Self-locking hydraulic press, 32. Protective cover, 33. Dovetail slider I, 34. Gear, 35. Self-locking motor I, 36. Motor mounting bracket, 37. Limiting groove, 38. Limiting rod, 39. Electromagnetic device, 4. Second moving unit, 41. Moving platform, 42. Mounting groove, 43. Dovetail slide I, 44. Dovetail slider II, 45. Connecting block, 46. Connecting strip, 47. Moving block, 48. Fixed plate I, 49. Anti-slip rubber pad I, 410. Dovetail slide II, 411. Rack, 412. Sliding block, 413. Second limiting groove, 414. Adjusting threaded rod I, 415. Self-locking motor II, 5. Arched mounting bracket, 6. Fixed plate II, 7. Adjusting threaded rod II, 8. Telescopic rod, 9. Anti-slip rubber pad II, 10. Threaded rod, 11. Bottom fixed plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-3 This embodiment provides a technical solution: a new energy vehicle motor performance testing fixture, including a base plate 1, a first moving unit 3, and a second moving unit 4; Base plate 1: A control console 2 is fixedly connected to the upper rear right side. A first moving unit 3 is installed on the upper end of the base plate 1. The first moving unit 3 also includes a self-locking hydraulic press 31, a protective cover 32, a dovetail slider 33, a limiting groove 37, a limiting rod 38, and an electromagnetic device 39. A self-locking hydraulic press 31 is fixedly connected to the upper front left side of the base plate 1. A corner of the protective cover 32 is fixedly connected to the upper end of the self-locking hydraulic press 31. A dovetail slider 33 is fixedly connected to the lower inner side of the protective cover 32. The dovetail slider 33 is slidably connected to the dovetail slide 410. A limiting groove 37 is opened on the upper middle part of the base plate 1. The electromagnetic device 39 is fixedly connected to the remaining triangles of the protective cover 32. A limiting rod 38 is slidably connected to the inner side of the electromagnetic device 39. The lower end of the limiting rod 38 is fixedly connected to the moving platform 41. The self-locking hydraulic press 31 pushes the protective cover 32 up and down. The dovetail-shaped slider 33 slides along the dovetail-shaped slide block 410 for guidance. The electromagnetic device 39 attracts the limit rod 38 to lock the height of the protective cover 32. The self-locking hydraulic press 31 provides powerful lifting and lowering. The electromagnetic device 39 quickly locks the protective cover 32. The dovetail-shaped slider 33 ensures accurate lifting and lowering trajectory.

[0017] The first moving unit 3 also includes a gear 34, a self-locking motor 35, and a motor mounting bracket 36. The motor mounting bracket 36 is fixedly connected to the right inner side of the protective cover 32, and the self-locking motor 35 is fixedly connected to the upper end of the motor mounting bracket 36. The gear 34 is rotatably connected to the right inner side of the protective cover 32, and the output shaft of the self-locking motor 35 is fixedly connected to the gear 34. The self-locking motor 35 drives the gear 34 to mesh with the rack 411, thereby moving the protective cover 32 longitudinally along the moving platform 41. The meshing of the gear 34 and the rack 411 enables micro-distance movement. The self-locking motor 35 self-locks when powered off to prevent accidental displacement, and the motor mounting bracket 36 enhances transmission stability.

[0018] The second moving unit 4 includes a moving platform 41, a mounting groove 42, a dovetail-shaped slide block 43, a dovetail-shaped slider 44, a connecting block 45, a connecting strip 46, a moving block 47, a fixing plate 48, an anti-slip rubber pad 49, an adjusting threaded rod 414, and a self-locking motor 415. The upper center of the base plate 1 has a mounting groove 42. The lower inner side of the mounting groove 42 is fixedly connected to the dovetail-shaped slide block 43. The inner side of the dovetail-shaped slide block 43 is slidably connected to the dovetail-shaped slider 44. The lower end of the dovetail-shaped slider 44 is fixedly connected to the connecting block 45. The inner side of the mounting groove 42... The device is rotatably connected to an adjusting threaded rod 414. The inner side of the moving block 47 is threadedly connected to the adjusting threaded rod 414. The two ends of the connecting strip 46 are rotatably connected to one end of the connecting block 45 and the moving block 47, respectively. The upper outer side of the dovetail slider 44 is slidably connected to the moving platform 41. The upper end of the dovetail slider 44 is fixedly connected to a fixing plate 48. The inner side of the fixing plate 48 is fixedly connected to an anti-slip rubber pad 49 by bolts. The middle rear end of the moving platform 41 is fixedly connected to a self-locking motor 415. The self-locking motor 415 is fixedly connected to the adjusting threaded rod 414.

[0019] The self-locking motor 415 drives the adjusting threaded rod 414 to rotate, which in turn moves the moving block 47. Through the connecting strip 46, the dovetail slider 44 slides along the dovetail slide block 43, allowing the fixing plate 48 to clamp the motor. The anti-slip rubber pad 49 increases friction to prevent displacement. The dovetail slide block 43 and the slider 44 provide high-precision lateral positioning. The self-locking motor 415 ensures clamping stability. The adjusting threaded rod 414 achieves stepless adjustment. The anti-slip rubber pad 49 can fix motors of different sizes.

[0020] The second moving unit 4 also includes a dovetail-shaped slide 410 and a rack 411. The dovetail-shaped slide 410 is fixedly connected to both ends of the moving platform 41, and the rack 411 is fixedly connected to the right side of the right dovetail-shaped slide 410. The dovetail-shaped slide 410 and the rack 411 are fixed to one side of the moving platform 41. The rack 411 meshes with the gear 34, and the longitudinal fine adjustment of the moving platform 41 is achieved through gear transmission. The meshing of the rack 411 and the gear 34 results in high transmission accuracy, and the dovetail-shaped slide 410 enhances the longitudinal stability of the moving platform 41.

[0021] The second moving unit 4 also includes a sliding block 412 and a second limiting groove 413. Two second limiting grooves 413 are provided on the upper front side of the moving platform 41, and four sliding blocks 412 are fixedly connected to the four corners of the lower end of the moving platform 41. The second limiting grooves 413 slide in cooperation with the sliding blocks 412 to prevent the motor from shifting during testing. The second limiting grooves 413 are adapted to the arched mounting bracket 5 to enhance the structural rigidity.

[0022] It also includes an arched mounting bracket 5, a second fixed plate 6, an adjusting threaded rod 7, a telescopic rod 8, a second anti-slip rubber pad 9, a threaded rod 10, and a bottom fixed plate 11. The arched mounting bracket 5 is fixedly connected to the front side of the upper end of the bottom plate 1. The arched mounting bracket 5 is slidably connected to the inner side of the second limiting groove 413. An adjusting threaded rod 7 is threadedly connected to the middle of the upper end of the arched mounting bracket 5. Another adjusting threaded rod 7 is threadedly connected to the moving platform 41. The rear end of the second fixed plate 6 is rotatably connected to one end of the adjusting threaded rod 7. One end of the telescopic rod 8 is fixedly connected to the rear end of the second fixed plate 6. The arched mounting bracket 5 and the moving platform 41 are respectively fixedly connected to the other end of the telescopic rod 8. The front end of the second fixed plate 6 is fixedly connected to the second anti-slip rubber pad 9 by bolts. The front end of the moving platform 41 is slidably connected to the bottom fixed plate 11. The threaded rod 10 is rotatably connected to the moving platform 41. The threaded rod 10 is threadedly connected to the bottom fixed plate 11. The adjusting threaded rod 7 rotates to push the fixed plate 6 to move, the telescopic rod 8 keeps the fixed plate 6 horizontal, the threaded rod 10 drives the bottom fixed plate 11 to slide and clamp the motor, and the anti-slip rubber pad 9 prevents slippage. At the same time, replacing the anti-slip rubber pad 9 can fix motors of different sizes. The adjusting threaded rod 7 and the telescopic rod 8 work together to achieve multi-directional adjustment. The bottom fixed plate 11 and the anti-slip rubber pad 9 form a bottom fixation, which can adapt to motors of different sizes.

[0023] The working principle of the new energy vehicle motor performance testing fixture provided by this utility model is as follows: The motor testing device achieves multi-directional positioning and clamping of the motor through the coordinated work of the first moving unit 3 and the second moving unit 4. The self-locking hydraulic press 31 pushes the protective cover 32 up and down along the dovetail slide 410, and the electromagnetic device 39 adsorbs the limiting rod 38 to lock the height. At the same time, the self-locking motor 35 drives the gear 34 to mesh with the rack 411, driving the protective cover 32 to move longitudinally along the moving platform 41, realizing lifting and fine adjustment of the longitudinal position. The self-locking motor 415 drives the adjusting threaded rod 414 to rotate, and pushes the dovetail slider 44 to slide laterally along the dovetail slide block 43 through the connecting bar 46. The fixing plate 48 and the anti-slip rubber pad 49 clamp the bottom of the motor. The adjusting threaded rod 7 drives the fixing plate 6 to press down, and cooperates with the bottom fixing plate 11 to slide and clamp the motor through the threaded rod 10. The anti-slip rubber pad 9 increases the friction and forms a two-way fixation. The protective cover 32 covers the motor test area during lifting and moving. The second limiting groove 413 and the sliding block 412 cooperate with the arched mounting bracket 5 to enhance the overall rigidity.

[0024] It is worth noting that, in the above embodiments, the input terminals of the self-locking hydraulic press 31, electromagnetic device 39, self-locking motor 2 415 and self-locking motor 1 35 are electrically connected to the output terminal of an external power supply through an external PLC controller. The external PLC controller controls the operation of the self-locking hydraulic press 31, electromagnetic device 39, self-locking motor 2 415 and self-locking motor 1 35 using methods commonly used in the prior art.

[0025] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A performance testing fixture for a new energy vehicle motor, characterized in that: It includes a base plate (1), a first moving unit (3), and a second moving unit (4); Base plate (1): The upper rear right side is fixedly connected to the control console (2), and the upper end of the base plate (1) is equipped with the first moving unit (3). The second moving unit (4) includes a moving platform (41), a mounting groove (42), a dovetail slide block one (43), a dovetail slider two (44), a connecting block (45), a connecting strip (46), a moving block (47), a fixing plate one (48), an anti-slip rubber pad one (49), an adjusting threaded rod one (414), and a self-locking motor two (415). The upper middle part of the base plate (1) is provided with a mounting groove (42). The lower inner side of the mounting groove (42) is fixedly connected to the dovetail slide block one (43). The dovetail slider two (44) is slidably connected to the inner side of the dovetail slide block one (43). The lower end of the dovetail slider two (44) is fixedly connected to the connecting block (45). The mounting groove (42) The inner side of the moving block (47) is rotatably connected to the adjusting threaded rod (414). The inner side of the moving block (47) is threadedly connected to the adjusting threaded rod (414). The two ends of the connecting strip (46) are rotatably connected to the connecting block (45) and the moving block (47) respectively. The upper outer side of the dovetail slider (44) is slidably connected to the moving platform (41). The upper end of the dovetail slider (44) is fixedly connected to the fixing plate (48). The inner side of the fixing plate (48) is fixedly connected to the anti-slip rubber pad (49) by bolts. The middle rear end of the moving platform (41) is fixedly connected to the self-locking motor (415). The self-locking motor (415) is fixedly connected to the adjusting threaded rod (414).

2. The performance testing fixture for a new energy vehicle motor according to claim 1, characterized in that: The second moving unit (4) also includes a dovetail slide two (410) and a rack (411). The left and right ends of the moving platform (41) are fixedly connected to the dovetail slide two (410), and the right side of the right dovetail slide two (410) is fixedly connected to the rack (411).

3. The performance testing fixture for a new energy vehicle motor according to claim 1, characterized in that: The second moving unit (4) also includes a sliding block (412) and a second limiting groove (413). Two second limiting grooves (413) are opened on the upper front side of the moving platform (41), and four sliding blocks (412) are fixedly connected to the four corners of the lower end of the moving platform (41).

4. The performance testing fixture for a new energy vehicle motor according to claim 2, characterized in that: The first moving unit (3) also includes a self-locking hydraulic press (31), a protective cover (32), a dovetail slider (33), a limiting groove (37), a limiting rod (38), and an electromagnetic device (39). A self-locking hydraulic press (31) is fixedly connected to the left side of the upper front end of the base plate (1). A corner of the protective cover (32) is fixedly connected to the upper end of the self-locking hydraulic press (31). A dovetail slider (33) is fixedly connected to the lower inner side of the protective cover (32) on the left and right. The dovetail slider (33) is slidably connected to the dovetail slide block (410). A limiting groove (37) is opened on the left and right sides of the upper middle part of the base plate (1). The electromagnetic device (39) is fixedly connected to the remaining triangles of the protective cover (32). A limiting rod (38) is slidably connected to the inner side of the electromagnetic device (39). The lower end of the limiting rod (38) is fixedly connected to the moving platform (41).

5. The performance testing fixture for a new energy vehicle motor according to claim 4, characterized in that: The first moving unit (3) also includes a gear (34), a self-locking motor (35) and a motor mounting bracket (36). The motor mounting bracket (36) is fixedly connected to the right side of the inner side of the protective cover (32). The self-locking motor (35) is fixedly connected to the upper end of the motor mounting bracket (36). The gear (34) is rotatably connected to the right side of the inner side of the protective cover (32). The output shaft of the self-locking motor (35) is fixedly connected to the gear (34).

6. The performance testing fixture for a new energy vehicle motor according to claim 1, characterized in that: It also includes an arched mounting bracket (5), a second fixed plate (6), a second adjusting threaded rod (7), a telescopic rod (8), a second anti-slip rubber pad (9), a threaded rod (10), and a bottom fixed plate (11). The arched mounting bracket (5) is fixedly connected to the front side of the upper end of the bottom plate (1). The arched mounting bracket (5) is slidably connected to the inner side of the second limiting groove (413). An adjusting threaded rod (7) is threadedly connected to the middle of the upper end of the arched mounting bracket (5). Another adjusting threaded rod (7) is threadedly connected to the moving platform (41). The second fixed plate (6) The rear end of the telescopic rod (8) is rotatably connected to one end of the adjusting threaded rod (7), one end of the telescopic rod (8) is fixedly connected to the rear end of the fixed plate (6), the arched mounting bracket (5) and the moving platform (41) are respectively fixedly connected to the other end of the telescopic rod (8), the front end of the fixed plate (6) is fixedly connected to the anti-slip rubber pad (9) by bolts, the front end of the moving platform (41) is slidably connected to the bottom fixed plate (11), the threaded rod (10) is rotatably connected to the moving platform (41), and the threaded rod (10) is threadedly connected to the bottom fixed plate (11).

Images