A worm gear reducer performance test device

Abstract

The present invention relates to the technical field of worm gear reducer testing, specifically a worm gear reducer performance test device, comprising a base plate, four corners of the top surface of the base plate are vertically fixedly connected with columns, the top ends of the four columns are fixedly connected with the same top plate, the inner top surface of the top plate is rotatably connected with a transmission rod, the end of the transmission rod is coaxially fixedly connected with a driving spur gear, the driving spur gear is meshed with four driven spur gears, and the four driven spur gears are distributed in a circular array with the transmission rod as the reference axis. This worm gear reducer performance test device, through the transmission sleeve moving downward, the sleeve rod synchronously moves downward, the sleeve rod drives the cross plate to move downward, at this time the pressure plate will contact with the worm gear reducer to be tested, clamping it, facilitating the installation of the worm gear reducer to be tested and completing the fixation and vibration detection of the worm gear reducer to be tested without other driving elements.

Description

Technical Field

[0001] The invention relates to the technical field of worm gear reducer testing, in particular to a worm gear reducer performance testing device. Background Art

[0002] The main structure of the worm gear reducer is composed of transmission parts such as worm gear, shaft, bearing, housing and its accessories. It uses a gear speed converter to reduce the number of revolutions of the motor to the required number of revolutions and obtain a larger torque. Its main functions include reducing speed while increasing output torque, reducing load inertia, and accurately controlling angle transmission.

[0003] A Chinese patent (authorization announcement number CN104390779B) discloses a reducer test system. In order to solve the shortcomings of the existing reducer test, such as high cost and long test cycle, the present invention provides a reducer test system, which includes a test bench, a rotating gear ring installed on the test bench, at least two reducers, and a drive motor. The output end gears of each reducer are meshed with the rotating gear ring, and the input end of each reducer is connected through a synchronous transmission device. The drive motor drives the input shaft of the reducer to rotate. An offset torque loading mechanism is provided on the input shaft of one of the reducers to load and adjust the torque of the reducer input end. The manufacturing cost and test cost of the above reducer test system are relatively low; at least two reducers are tested at the same time during the test, and the input and output torques during the test can be increased by the offset torque loading mechanism, so as to realize accelerated life test and shorten the test cycle. However, there is a problem that the installation of the reducer to be tested is relatively troublesome.

[0004] Another example is a Chinese patent (CN116625676B) which discloses a universal reducer test device, which relates to the field of reducer testing technology, including a test frame device and a vibration detection device. In the test frame device, a driving motor drives the reducer to rotate through a motor driving gear, a driven large gear and a driven small gear, controls the torque load given by the magnetic powder brake, and displays the torque value of the reducer to be tested through the torque tester. When the vibration detection in the vibration detection device is working, the extension cylinder is extended to contact the magnet support with the outer cylindrical surface of the reducer to be tested, and the electromagnet is energized to adsorb the magnet support and the vibration detector on the outer cylindrical surface of the reducer to be tested. The clamping cylinder drives the conical clamping jaw to loosen. After the vibration detection is completed, the clamping cylinder drives the conical boss on the conical clamping jaw to cooperate and position the conical hole on the magnet support. The driven small gears of the above device can be evenly distributed in multiple arrays on the upper surface of the lower fixed plate, so that multiple groups of reducers to be tested can be tested simultaneously. However, the fixing of the reducer to be tested and the vibration detection process require the cooperation of multiple cylinders, which undoubtedly increases the manufacturing cost of the device.

[0005] In order to solve the above problems, we made improvements and proposed a worm gear reducer performance test device. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] The present invention provides a worm gear reducer performance test device, comprising a base plate, four corners of the top surface of the base plate are vertically fixedly connected with columns, the top ends of the four columns are fixedly connected with the same top plate, the inner top surface of the top plate is rotatably connected with a transmission rod, the end of the transmission rod is coaxially fixedly connected with a driving spur gear, the driving spur gear is meshed with four driven spur gears, and the four driven spur gears are distributed in a circumferential array with the transmission rod as a reference axis, and the driven spur gears are coaxially fixedly installed on the output shaft of the worm gear reducer to be tested;

[0008] A downward movement mechanism is installed on the outside of the transmission rod, and the downward movement mechanism includes a transmission sleeve, and the transmission sleeve is slidably mounted on the outer wall of the transmission rod. A T-shaped arc groove is opened inside the transmission sleeve, and the inner wall of the T-shaped arc groove inside the transmission sleeve is rotatably connected with a resistance cylinder, and the top surface of the resistance cylinder is coaxially fixedly connected with a ratchet. The outer wall of the transmission rod is provided with a threaded portion, and the threaded portion of the transmission rod is threadedly connected to the resistance cylinder and the ratchet. A first limiting mechanism and a second limiting mechanism are installed inside the transmission sleeve, and the first limiting mechanism is used to limit the rotation of the resistance cylinder, and the second limiting mechanism is used to limit the rotation of the ratchet.

[0009] As a preferred technical solution of the present invention, four corners of the top surface of the base plate are vertically fixedly connected with upright plates, the top surfaces of the four upright plates are fixedly connected with the same supporting circular plate, and the center of the supporting circular plate is rotatably connected with the outer wall of the transmission rod;

[0010] Four docking grooves are opened on the outer side of the supporting circular plate, and four worm gear reducers to be tested are placed on the top surface of the supporting circular plate through the docking grooves in a circular array with the transmission rod as the reference axis. Four vibration detection mechanisms are installed on the top surface of the supporting circular plate, and the four vibration detection mechanisms are distributed in a circular array with the transmission rod as the reference axis.

[0011] As a preferred technical solution of the present invention, the vibration detection mechanism includes a limited slide rail, a mounting slider is slidably connected to the limited slide rail, a spring rod is fixedly installed on the outer side of the mounting slider, the other end of the spring rod is fixedly connected to an arc plate, and a vibration sensor is installed on the arc inner wall of the arc plate;

[0012] A connecting rod is hinged on the inner side of the installation sliding block, and the other end of the connecting rod is hinged on the outer wall of the transmission sleeve.

[0013] As a preferred technical solution of the present invention, the top surface of the transmission sleeve is coaxially fixedly connected with a sleeve rod, the sleeve rod is slidably connected to the outer wall of the transmission rod, the outer wall of the sleeve rod is fixedly connected with a cross plate, the bottom surfaces of the four arms of the cross plate are fixedly connected with spring rods, the bottom end of the spring rod is fixedly connected with a pressure plate, and the pressure plate is located directly above the worm gear reducer to be tested.

[0014] As a preferred technical solution of the present invention, a limited telescopic rod is fixedly connected between the top surfaces of the four supporting arms of the cross plate and the bottom surface of the top plate.

[0015] As a preferred technical solution of the present invention, a driving motor is installed on the top surface of the top plate, and the output shaft of the driving motor is coaxially fixedly connected to the transmission rod.

[0016] As a preferred technical solution of the present invention, the first limiting mechanism includes a horizontal sliding circular groove and a vertical sliding circular groove, the horizontal sliding circular groove is arranged at the lower part of the inner wall of the T-shaped arc groove of the transmission sleeve, the interior of the horizontal sliding circular groove is slidably connected with a clamping cylinder, and a plurality of clamping holes that can be clamped with the clamping cylinder are arranged in a circumferential array on the outer wall of the contact cylinder, the inner wall of the horizontal sliding circular groove is fixedly connected with a limiting sliding bar that is slidably connected with the clamping cylinder, a first spring is fixedly connected between the clamping cylinder and the inner wall of the horizontal sliding circular groove, a contact groove is arranged on the clamping cylinder, and the side surface of the contact groove is set to a right-angle trapezoid;

[0017] A sliding plate is slidably connected to the inner wall of the vertical sliding circular groove, and a rectangular contact plate is fixedly connected to the center of the sliding plate. A chamfer is provided on one side of the top surface of the rectangular contact plate, and the inclination angle of the chamfer of the rectangular contact plate is the same as the inclination angle of the lower oblique side of the side of the contact groove. The top end of the rectangular contact plate extends into the interior of the horizontal sliding circular groove, and the bottom end of the rectangular contact plate slides through to the outside of the transmission sleeve. A second spring is fixedly connected between the top surface of the sliding plate and the top surface of the vertical sliding circular groove, and the second spring is sleeved on the outside of the rectangular contact plate.

[0018] As a preferred technical solution of the present invention, the second limiting mechanism includes a sliding cavity, which is opened on the upper part of the inner wall of the T-shaped arc groove of the transmission sleeve, and the interior of the sliding cavity is slidably connected with a limiting rod that can be engaged with the ratchet, one end of the limiting rod extends to the inside of the T-shaped arc groove of the transmission sleeve, and a third spring is fixedly connected between the other end of the limiting rod and the inner wall of the sliding cavity.

[0019] The beneficial effects of the present invention are:

[0020] 1. This worm gear reducer performance test device starts the drive motor and controls the drive motor to start slowly through an external controller, driving the transmission rod to rotate. The threaded part of the transmission rod drives the interference cylinder and the ratchet to move downward, and the transmission sleeve moves downward accordingly. The sleeve rod moves downward synchronously, and the sleeve rod drives the cross plate to move downward. At this time, the pressure plate will contact the worm gear reducer to be tested and clamp it, which facilitates the installation of the worm gear reducer to be tested.

[0021] 2. In this worm gear reducer performance test device, the transmission sleeve drives the installation slider to move through the connecting rod, and the arc plate finally contacts the arc surface of the worm gear reducer. No other driving elements are required to complete the fixation and vibration detection of the worm gear reducer to be tested.

[0022] 3. This worm gear reducer performance test device can perform durability and vibration tests on four worm gear reducers to be tested at the same time, thereby improving the test efficiency of the worm gear reducers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a three-dimensional schematic diagram of a worm gear reducer performance test device of the present invention;

[0025] Figure 2 It is a front view schematic diagram of a worm gear reducer performance test device of the present invention;

[0026] Figure 3 The invention relates to a worm gear reducer performance test device. Figure 2 AA section view;

[0027] Figure 4 The invention relates to a worm gear reducer performance test device. Figure 3 A magnified schematic diagram;

[0028] Figure 5 It is a partial three-dimensional schematic diagram of a worm gear reducer performance test device of the present invention;

[0029] Figure 6 It is a three-dimensional schematic diagram of the meshing of a driving spur gear and a driven spur gear of a worm gear reducer performance test device of the present invention;

[0030] Figure 7 It is a three-dimensional schematic diagram of a conflicting cylinder and a ratchet wheel of a worm gear reducer performance test device of the present invention;

[0031] In the figure: 1. base plate; 2. column; 3. top plate; 4. transmission rod; 5. driving spur gear; 6. driven spur gear; 7. transmission sleeve; 8. abutment cylinder; 9. ratchet; 10. vertical plate; 11. supporting circular plate; 12. mounting slider; 13. arc plate; 14. connecting rod; 15. sleeve rod; 16. cross plate; 17. pressure plate; 18. driving motor; 19. horizontal sliding circular groove; 20. clamping cylinder; 21. vertical sliding circular groove; 22. sliding plate; 23. rectangular abutment plate; 24. sliding cavity; 25. limiting rod. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0033] Example: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 6 A worm gear reducer performance test device comprises a base plate 1, four corners of the top surface of the base plate 1 are vertically fixedly connected with columns 2, the top ends of the four columns 2 are fixedly connected with the same top plate 3, the inner top surface of the top plate 3 is rotatably connected with a transmission rod 4, the end of the transmission rod 4 is coaxially fixedly connected with a driving spur gear 5, the driving spur gear 5 is meshed with four driven spur gears 6, and the four driven spur gears 6 are distributed in a circumferential array with the transmission rod 4 as a reference axis, and the driven spur gears 6 are coaxially fixedly installed on the output shaft of the worm gear reducer to be tested;

[0034] Please refer to Figure 4 A driving motor 18 is installed on the top surface of the top plate 3, and the output shaft of the driving motor 18 is coaxially fixedly connected to the transmission rod 4, and the driving motor 18 needs to be electrically connected to an external controller. A downward movement mechanism is installed on the outside of the transmission rod 4, and the downward movement mechanism includes a transmission sleeve 7, and the transmission sleeve 7 is slidably mounted on the outer wall of the transmission rod 4. A T-shaped arc groove is opened inside the transmission sleeve 7, and the inner wall of the T-shaped arc groove inside the transmission sleeve 7 is rotatably connected with a resistance cylinder 8, and a ratchet 9 is coaxially fixedly connected to the top surface of the resistance cylinder 8. The outer wall of the transmission rod 4 is provided with a threaded portion, and the threaded portion of the transmission rod 4 is threadedly connected to the resistance cylinder 8 and the ratchet 9.

[0035] Four worm gear reducers to be tested are placed on the supporting circular plate 11, and the input shaft of the worm gear reducer passes through the docking groove on the supporting circular plate 11. The driven spur gear 6 on the input shaft of the worm gear reducer meshes with the driving spur gear 5, and then the driving motor 18 is started. The driving motor 18 is controlled by an external controller to start slowly first, driving the transmission rod 4 to rotate, and the threaded part of the transmission rod 4 drives the abutment cylinder 8 and the ratchet 9 to move downward, and the transmission sleeve 7 moves downward accordingly. On the one hand, the sleeve rod 15 moves downward synchronously, and the sleeve rod 15 drives the cross plate 16 to move downward. At this time, the pressure plate 17 will contact the worm gear reducer to be tested and clamp it. On the other hand, the transmission sleeve 7 drives the installation slider 12 to move through the connecting rod 14, and the arc plate 13 finally contacts the arc surface of the worm gear reducer. The vibration sensor located on the arc plate 13 can perform vibration detection on the worm gear reducer.

[0036] During the downward movement of the transmission sleeve 7 , the rotation of the ratchet wheel 9 will not be restricted by the limiting rod 25 , and the abutting cylinder 8 will be restricted by the clamping cylinder 20 .

[0037] Please refer to Figure 4 and Figure 7 , a first limiting mechanism and a second limiting mechanism are installed inside the transmission sleeve 7, the first limiting mechanism is used to limit the rotation of the interference cylinder 8, and the second limiting mechanism is used to limit the rotation of the ratchet 9. The first limiting mechanism includes a horizontal sliding groove 19 and a vertical sliding groove 21. The horizontal sliding groove 19 is arranged at the lower part of the inner wall of the T-shaped arc groove of the transmission sleeve 7, and the inside of the horizontal sliding groove 19 is slidably connected with a clamping cylinder 20, and a plurality of clamping holes that can be clamped with the clamping cylinder 20 are arranged in a circumferential array on the outer wall of the interference cylinder 8. A limiting slide bar slidably connected with the clamping cylinder 20 is fixedly connected to the inner wall of the horizontal sliding groove 19, and a first spring is fixedly connected between the clamping cylinder 20 and the inner wall of the horizontal sliding groove 19, and a conflict groove is arranged on the clamping cylinder 20, and the side surface of the conflict groove is set to a right-angle trapezoid;

[0038] The function of the limit slide bar is to limit the rotation of the clamping cylinder 20, and the function of the first spring is to make the clamping cylinder 20 return to its original position when the rectangular contact plate 23 is separated from the contact groove of the clamping cylinder 20.

[0039] Please refer to Figure 4 The inner wall of the vertical sliding circular groove 21 is slidably connected with a sliding plate 22, and a rectangular contact plate 23 is fixedly connected at the center of the sliding plate 22. A chamfer is provided on one side of the top surface of the rectangular contact plate 23, and the inclination angle of the chamfer of the rectangular contact plate 23 is the same as the inclination angle of the lower oblique side of the side of the contact groove. The top end of the rectangular contact plate 23 extends to the inside of the horizontal sliding circular groove 19, and the bottom end of the rectangular contact plate 23 slides through to the outside of the transmission sleeve 7. A second spring is fixedly connected between the top surface of the sliding plate 22 and the inner top surface of the vertical sliding circular groove 21, and the second spring is sleeved on the outside of the rectangular contact plate 23.

[0040] The function of the second spring is to return the rectangular abutting plate 23 to its original position when the rectangular abutting plate 23 is separated from the supporting circular plate 11 , that is, the rectangular abutting plate 23 no longer abuts against the abutting groove of the clamping cylinder 20 .

[0041] When the slow start process is about to end, after the transmission sleeve 7 approaches the supporting circular plate 11, the supporting circular plate 11 abuts against the rectangular abutting plate 23, causing the rectangular abutting plate 23 to move upward relative to the transmission sleeve 7, and the top end of the rectangular abutting plate 23 abuts against the clamping cylinder 20, causing the clamping cylinder 20 to move outward, and further the clamping cylinder 20 is disengaged from the clamping with the abutting cylinder 8, and the abutting cylinder 8 and the ratchet 9 can rotate relative to the transmission sleeve 7.

[0042] Please refer to Figure 5 , the four corners of the top surface of the base plate 1 are vertically fixedly connected with upright plates 10, the top surfaces of the four upright plates 10 are fixedly connected with the same supporting circular plate 11, and the center of the supporting circular plate 11 is rotatably connected to the outer wall of the transmission rod 4;

[0043] Please refer to Figure 5 Four docking grooves are opened on the outer side of the supporting circular plate 11, and four worm gear reducers to be tested are placed on the top surface of the supporting circular plate 11 through the docking grooves in a circular array with the transmission rod 4 as the reference axis. Four vibration detection mechanisms are installed on the top surface of the supporting circular plate 11, and the four vibration detection mechanisms are distributed in a circular array with the transmission rod 4 as the reference axis.

[0044] Please refer to Figure 5 The vibration detection mechanism includes a limited slide rail, a mounting slide block 12 is slidably connected to the limited slide rail, a spring rod is fixedly installed on the outer side of the mounting slide block 12, an arc plate 13 is fixedly connected to the other end of the spring rod, and a vibration sensor is installed on the arc inner wall of the arc plate 13, and the vibration sensor is electrically connected to the external controller;

[0045] A connecting rod 14 is hinged on the inner side of the mounting slide 12, and the other end of the connecting rod 14 is hinged to the outer wall of the transmission sleeve 7. The transmission sleeve 7 moving downward drives the mounting slide 12 to move through the connecting rod 14, and the arc plate 13 finally contacts the arc surface of the worm gear reducer.

[0046] Please refer to Figure 5 The top surface of the transmission sleeve 7 is coaxially fixedly connected with a sleeve rod 15, and the sleeve rod 15 is slidably connected to the outer wall of the transmission rod 4. The outer wall of the sleeve rod 15 is fixedly connected with a cross plate 16, and the bottom surfaces of the four arms of the cross plate 16 are fixedly connected with spring rods. The bottom end of the spring rod is fixedly connected with a pressure plate 17, and the pressure plate 17 is located directly above the worm gear reducer to be tested. The sleeve rod 15 moves downward synchronously, and the sleeve rod 15 drives the cross plate 16 to move downward. At this time, the pressure plate 17 will contact the worm gear reducer to be tested and clamp it.

[0047] Please refer to Figure 1 A limiting telescopic rod is fixedly connected between the top surfaces of the four supporting arms of the cross plate 16 and the bottom surface of the top plate 3, and the limiting telescopic rod is used to prevent the cross plate 16 from rotating.

[0048] After the slow start process is completed, the drive motor 18 is accelerated by the external controller, and the drive motor 18 drives the transmission rod 4 to rotate. The transmission rod 4 drives the four worm gear reducers to be tested to rotate through the driving spur gear 5 and the driven spur gear 6 for durability and vibration testing.

[0049] Please refer to Figure 4 The second limiting mechanism includes a sliding cavity 24, which is opened on the upper part of the inner wall of the T-shaped arc groove of the transmission sleeve 7. The interior of the sliding cavity 24 is slidably connected with a limiting rod 25 that can be engaged with the ratchet 9. One end of the limiting rod 25 extends to the inside of the T-shaped arc groove of the transmission sleeve 7, and a third spring is fixedly connected between the other end of the limiting rod 25 and the inner wall of the sliding cavity 24.

[0050] When the detection is completed, the drive motor 18 is controlled by an external controller to rotate in the opposite direction. During the reverse rotation process of the drive motor 18, the ratchet 9 will be restricted by the limit rod 25 and cannot rotate relative to the transmission sleeve 7. That is, the ratchet 9 and the abutting cylinder 8 act on the threaded portion of the transmission rod 4, and the transmission sleeve 7 moves upward, further releasing the fixation of the worm gear reducer to be tested and the contact with the arc plate 13.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A worm gear reducer performance test device, comprising a base plate (1), wherein four corners of the top surface of the base plate (1) are vertically fixedly connected to columns (2), and the top ends of the four columns (2) are fixedly connected to the same top plate (3), characterized in that: The inner top surface of the top plate (3) is rotatably connected to a transmission rod (4), the end of the transmission rod (4) is coaxially fixedly connected to a driving spur gear (5), the driving spur gear (5) is meshed with four driven spur gears (6), and the four driven spur gears (6) are distributed in a circular array with the transmission rod (4) as a reference axis, and the driven spur gears (6) are coaxially fixedly mounted on the output shaft of the worm gear reducer to be tested; The transmission rod (4) is provided with a downward movement mechanism on the outside thereof, the downward movement mechanism comprising a transmission sleeve (7), the transmission sleeve (7) being slidably mounted on the outer wall of the transmission rod (4), the transmission sleeve (7) being provided with a T-shaped arc groove inside thereof, the inner wall of the T-shaped arc groove inside the transmission sleeve (7) being rotatably connected to a resisting cylinder (8), the top surface of the resisting cylinder (8) being coaxially fixedly connected to a ratchet (9), the outer wall of the transmission rod (4) being provided with a threaded portion, and the threaded portion of the transmission rod (4) being threadedly connected to the resisting cylinder (8) and the ratchet (9), the transmission sleeve (7) being provided with a first limiting mechanism and a second limiting mechanism, the first limiting mechanism being used to limit the rotation of the resisting cylinder (8), and the second limiting mechanism being used to limit the rotation of the ratchet (9); Four corners of the top surface of the base plate (1) are vertically fixedly connected to upright plates (10), the top surfaces of the four upright plates (10) are fixedly connected to the same supporting circular plate (11), and the center of the supporting circular plate (11) is rotatably connected to the outer wall of the transmission rod (4); Four docking grooves are provided on the outer side of the supporting circular plate (11), and four worm gear reducers to be tested are placed on the top surface of the supporting circular plate (11) in a circular array distribution with the transmission rod (4) as a reference axis through the docking grooves. Four vibration detection mechanisms are installed on the top surface of the supporting circular plate (11), and the four vibration detection mechanisms are distributed in a circular array distribution with the transmission rod (4) as a reference axis. The vibration detection mechanism comprises a limit slide rail, a mounting slide block (12) is slidably connected to the limit slide rail, a spring rod is fixedly mounted on the outer side of the mounting slide block (12), an arc plate (13) is fixedly connected to the other end of the spring rod, and a vibration sensor is mounted on the arc-shaped inner wall of the arc plate (13); A connecting rod (14) is hingedly connected to the inner side of the installation slide block (12), and the other end of the connecting rod (14) is hingedly connected to the outer wall of the transmission sleeve (7).

2. A worm gear reducer performance test device according to claim 1, characterized in that: The top surface of the transmission sleeve (7) is coaxially fixedly connected to a sleeve rod (15), the sleeve rod (15) is slidably connected to the outer wall of the transmission rod (4), the outer wall of the sleeve rod (15) is fixedly connected to a cross plate (16), the bottom surfaces of four support arms of the cross plate (16) are fixedly connected to spring rods, the bottom ends of the spring rods are fixedly connected to a pressure plate (17), and the pressure plate (17) is located directly above the worm gear reducer to be tested.

3. A worm gear reducer performance test device according to claim 2, characterized in that: A limited telescopic rod is fixedly connected between the top surfaces of the four supporting arms of the cross plate (16) and the bottom surface of the top plate (3).

4. A worm gear reducer performance test device according to claim 1, characterized in that: A drive motor (18) is mounted on the top surface of the top plate (3), and an output shaft of the drive motor (18) is coaxially fixedly connected to the transmission rod (4).

5. A worm gear reducer performance test device according to claim 1, characterized in that: The first limiting mechanism comprises a horizontal sliding circular groove (19) and a vertical sliding circular groove (21), the horizontal sliding circular groove (19) being provided at the lower part of the inner wall of the T-shaped circular arc groove of the transmission sleeve (7), the interior of the horizontal sliding circular groove (19) being slidably connected with a clamping cylinder (20), and a plurality of clamping holes which can be clamped with the clamping cylinder (20) are provided in a circumferential array on the outer wall of the abutting cylinder (8), the inner wall of the horizontal sliding circular groove (19) being fixedly connected with a limiting sliding bar which is slidably connected with the clamping cylinder (20), a first spring being fixedly connected between the clamping cylinder (20) and the inner wall of the horizontal sliding circular groove (19), and a clamping groove being provided on the clamping cylinder (20), the side surface of the clamping groove being set as a right-angle trapezoid; A sliding plate (22) is slidably connected to the inner wall of the vertical sliding circular groove (21), and a rectangular contact plate (23) is fixedly connected to the center of the sliding plate (22). A chamfer is provided on one side of the top surface of the rectangular contact plate (23), and the chamfer inclination angle of the rectangular contact plate (23) is the same as the inclination angle of the lower oblique side of the side surface of the contact groove. The top end of the rectangular contact plate (23) extends into the interior of the horizontal sliding circular groove (19), and the bottom end of the rectangular contact plate (23) slides through the exterior of the transmission sleeve (7). A second spring is fixedly connected between the top surface of the sliding plate (22) and the inner top surface of the vertical sliding circular groove (21), and the second spring is sleeved on the exterior of the rectangular contact plate (23).

6. A worm gear reducer performance test device according to claim 1, characterized in that: The second limiting mechanism comprises a sliding cavity (24), the sliding cavity (24) being arranged at the upper part of the inner wall of the T-shaped arc groove of the transmission sleeve (7), the interior of the sliding cavity (24) being slidably connected with a limiting rod (25) which can be engaged with the ratchet (9), one end of the limiting rod (25) extending into the interior of the T-shaped arc groove of the transmission sleeve (7), and a third spring being fixedly connected between the other end of the limiting rod (25) and the inner wall of the sliding cavity (24).

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