Harmonic speed reducer return stroke back clearance test platform

Abstract

The utility model discloses a harmonic speed reducer return stroke back clearance test platform, which relates to the technical field of harmonic speed reducers and comprises a test platform, a pressing mechanism, a fixing mechanism, a swing assembly and an auxiliary supporting mechanism. The right side of the harmonic speed reducer is an output end, the left side of the harmonic speed reducer is an input end, the right side of the harmonic speed reducer is provided with a fixing mechanism, the left side of the harmonic speed reducer is provided with a swing assembly, and the left side of the swing assembly is provided with an auxiliary supporting mechanism; the pressing mechanism comprises a supporting table, a pressing block, a guide assembly, arc-shaped limiting grooves, threaded holes, screws and a driving motor, the supporting table is fixed to the middle of the upper side of the testing platform through fastening bolts, the pressing block is arranged on the upper side of the supporting table, and the arc-shaped limiting grooves are formed in the middle of the upper side of the supporting table and the middle of the lower side of the pressing block. And more equipment is not required, the operation is relatively simple and convenient, the test cost is relatively low, and the practicability is relatively high.

Description

Technical Field

[0001] The utility model relates to the technical field of harmonic reducers, in particular to a return backlash testing platform for harmonic reducers. Background Art

[0002] Harmonic reducer is an important transmission component, usually connected between the motor and the applied load. It realizes transmission through the cooperation between gears and has the advantages of high rigidity, high precision, high transmission efficiency and high torque. The return clearance is an important performance parameter for measuring the reducer. When measuring, the input end is fixed and rotated clockwise and counterclockwise. When the output end is subjected to ±2% torque, there is a small angular displacement at the output end. This angular displacement is the return clearance, also known as "backlash".

[0003] When testing the return clearance of the reducer, first lock the reducer housing and the input shaft, load external force on the output shaft through a push-pull dynamometer, make the output shaft rotate clockwise and counterclockwise, then measure the offset of the output shaft with a micrometer and calculate the approximate return clearance value through the trigonometric function relationship. The measurement process is cumbersome.

[0004] The existing harmonic reducer return backlash test platform has a complex structure, occupies a large area, requires a large number of sensors and measuring equipment, is difficult to operate, and has high testing costs. Therefore, we propose a harmonic reducer return backlash test platform. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a harmonic reducer return backlash test platform, which has a relatively simple structure, occupies a small area, does not require a large number of equipment, is relatively easy to operate, has a low test cost, and is highly practical, and can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A harmonic reducer return backlash test platform includes a test platform, a clamping mechanism, a fixing mechanism, a swing assembly and an auxiliary support mechanism;

[0007] A clamping mechanism is provided in the middle of the upper side of the test platform, a harmonic reducer is provided in the middle of the clamping mechanism, the right side of the harmonic reducer is the output end, the left side of the harmonic reducer is the input end, a fixing mechanism is provided on the right side of the harmonic reducer, a swing assembly is provided on the left side of the harmonic reducer, and an auxiliary supporting mechanism is provided on the left side of the swing assembly;

[0008] The clamping mechanism includes a support platform, a clamping block, a guide assembly, an arc-shaped limit groove, a threaded hole, a screw and a drive motor. The support platform is fixed to the middle part of the upper side of the test platform by fastening bolts. A clamping block is provided on the upper side of the support platform. Arc-shaped limit grooves are provided in the middle part of the upper side of the support platform and in the middle part of the lower side of the clamping block. The support platform is connected to the clamping block through the guide assembly. A threaded hole is provided in the middle part of the upper side of the clamping block. The screw is threadedly connected to the threaded hole. The upper side of the screw passes through the mounting plate and is fixedly connected to the output shaft of the drive motor. The screw is rotatably connected to the inside of the mounting plate, and the drive motor is fixed to the mounting plate.

[0009] The support table is used to support the harmonic reducer, the clamping block is used to clamp the harmonic reducer, the guide assembly is used to guide the clamping block to move vertically upward and downward, the arc-shaped limit groove is used to place the harmonic reducer, the threaded hole is used to cooperate with the screw, and the drive motor is used to provide power. By starting the drive motor, the screw can be driven to rotate, thereby causing the threaded clamping block to move downward, and the harmonic reducer in the arc-shaped limit groove is clamped and fixed, which is convenient for subsequent testing.

[0010] Furthermore, the guide assembly includes circular hole one, circular hole two, a guide rod and a cylindrical compression spring. Circular hole one is symmetrically opened on the top of the support table, and circular hole two is symmetrically opened on the bottom of the clamping block. The centers of circular hole one and circular hole two are on a straight line, the radius of circular hole one is smaller than the radius of circular hole two, the radius of the bottom of the guide rod is the same as that of circular hole one, the bottom of the guide rod is fixedly connected to the bottom of circular hole one, the middle part of the guide rod passes through circular hole two, the clamping block and the mounting plate are fixedly connected to the limit plate, and a cylindrical compression spring is fixedly sleeved inside circular hole two, and the cylindrical compression spring is sleeved on the outside of the guide rod.

[0011] Round hole one and round hole two are used for guide rod limiting and keep the clamping block in a vertical position to the ground when it falls and is clamped, so as to provide accuracy during testing. The guide rod is used to guide the clamping block, and the cylindrical compression spring is used to buffer the extrusion impact generated during clamping.

[0012] Furthermore, the fixing mechanism includes a guide rail 1, a slide rail 1, a mounting seat, a fixed shaft and a cylinder. A symmetrically distributed guide rail 1 is fixedly installed on the upper right end of the test platform, and a guide rail 1 is slidably provided on the upper side of each guide rail 1. A mounting seat is fixedly connected to the upper side of guide rail 1, and a fixed shaft is fixedly connected to the side of the mounting seat close to the harmonic reducer. The fixed shaft has the same inner diameter as the output end of the right side of the harmonic reducer, and the side of the mounting seat away from the harmonic reducer is fixedly connected to the output shaft of the cylinder.

[0013] Guide rail one is used to guide slide rail one to slide, slide rail one supports mounting seat, mounting seat is used to fix fixed shaft, fixed shaft is used to limit harmonic reducer, cylinder is used to provide power for horizontal movement, starting cylinder can push mounting seat to move horizontally, and slide rail one slides horizontally on guide rail one at the same time, fixed shaft is inserted into the right output end of harmonic reducer to fix the output end of harmonic reducer.

[0014] Furthermore, the swing assembly includes a fixed plate, a swing part, a fastening bolt, a fixed sleeve and a connecting shaft. There are two fixed plates symmetrically distributed, a swing part is fixedly connected between the two fixed plates, the two fixed plates and the swing part are fixedly connected by fastening bolts, a fixed sleeve is fixedly connected to the right side of the right fixed plate, the fixed sleeve is fixedly connected to the left output end of the harmonic reducer, and the connecting shaft passes through the two fixed plates and the swing part to the outside.

[0015] The fixing plate is used to fix the swinging part, which is used to better present the tiny angular displacement of the input end of the harmonic reducer, so as to facilitate the testing of the return backlash. The fastening bolts are used to fix the fixing plate and the swinging part together. The fixing sleeve is used to connect the input end of the reducer, and the connecting shaft is used to connect to the auxiliary support mechanism.

[0016] Furthermore, the auxiliary support mechanism includes guide rail 2, slide rail 2, a fixed seat, a support sleeve and a hydraulic cylinder. Guide rail 2 is fixedly installed on the upper side of the left end of the test platform, slide rail 2 is slidably provided on the upper side of guide rail 2, a fixed seat is fixedly connected to the upper side of slide rail 2, a support sleeve is fixedly provided on the end of the fixed seat close to the swinging component, the inner diameter of the support sleeve is the same as the outer diameter of the connecting shaft, the end of the fixed seat away from the swinging component is fixedly connected to the output shaft of the hydraulic cylinder, and the hydraulic cylinder is fixed on the test platform.

[0017] Guide rail two is used for horizontal sliding of slide rail two, slide rail two is used to fix and drive the fixed seat to move, the fixed seat is used to fix the support sleeve, the support sleeve is used to connect the swing assembly, the hydraulic cylinder is used to provide power for horizontal sliding, and starting the hydraulic cylinder can push the fixed seat to move horizontally. At the same time, slide rail two can slide horizontally on guide rail two, so that guide rail two is sleeved on the outside of the connecting shaft to support the swing assembly, and the swing assembly no longer rotates at this time.

[0018] Furthermore, it also includes a counterweight block and a test device. A hook is fixedly connected to the upper side of the counterweight block, and the hook is movably connected to the hanging part on the right side of the swing component. There are two test devices and they are symmetrically arranged on the front and rear sides of the auxiliary support mechanism. The front of the test device corresponds to the hanging part of the swing component.

[0019] Place a counterweight of appropriate weight on the right hanging part of the swing assembly, remove the auxiliary support mechanism, and rotate the right side of the swing assembly clockwise. At this time, the test device records the angle at this moment. Similarly, record the angle of rotation on the left side. This value is a negative value. The difference between the two values ​​is the return backlash value.

[0020] Compared with the prior art, the beneficial effects of the utility model are: the harmonic reducer return backlash test platform has the following advantages:

[0021] 1. The support table is used to support the harmonic reducer, the clamping block is used to clamp the harmonic reducer, the guide assembly is used to guide the clamping block to move vertically upward and downward, the arc limit groove is used to place the harmonic reducer, the threaded hole is used to cooperate with the screw, and the drive motor is used to provide power. By starting the drive motor, the screw can be driven to rotate, so that the threaded clamping block moves downward, and the harmonic reducer in the arc limit groove is clamped and fixed, which is convenient for subsequent testing.

[0022] 2. Guide rail 1 is used to guide slide rail 1 to slide, slide rail 1 supports mounting seat, mounting seat is used to fix fixed shaft, fixed shaft is used to limit harmonic reducer, cylinder is used to provide power for horizontal movement, starting cylinder can push mounting seat to move horizontally, at the same time slide rail 1 slides horizontally on guide rail 1, fixed shaft is inserted into the right output end of harmonic reducer to fix the output end of harmonic reducer.

[0023] 3. Place a counterweight of appropriate weight on the right hanging part of the swing assembly, remove the auxiliary support mechanism, and rotate the right side of the swing assembly clockwise. At this time, the test device records the angle at this moment. Similarly, record the angle of rotation on the left side. This value is a negative value. The difference between the two values ​​is the return backlash value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model.

[0025] Figure 2 It is a schematic diagram of the clamping mechanism of the utility model structure.

[0026] Figure 3 It is a schematic diagram of the front section of the structure of the utility model.

[0027] Figure 4 It is a schematic diagram of the structural swing component of the utility model.

[0028] In the figure: 1 test platform, 2 clamping mechanism, 21 support table, 22 clamping block, 23 guide assembly, 231 circular hole 1, 232 circular hole 2, 233 guide rod, 234 cylindrical compression spring, 24 arc limit groove, 25 threaded hole, 26 screw, 27 drive motor, 3 harmonic reducer, 4 fixing mechanism, 41 guide rail 1, 42 slide rail 1, 43 mounting seat, 44 fixed shaft, 45 cylinder, 5 swing assembly, 51 fixed plate, 52 swing member, 53 fastening bolt, 54 fixing sleeve, 55 connecting shaft, 6 auxiliary supporting mechanism, 61 guide rail 2, 62 slide rail 2, 63 fixing seat, 64 supporting sleeve, 65 hydraulic cylinder, 7 counterweight, 8 test device. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-4 , This embodiment provides a technical solution: A harmonic reducer return backlash test platform includes a test platform 1, a clamping mechanism 2, a fixing mechanism 4, a swing assembly 5 and an auxiliary support mechanism 6;

[0031] A clamping mechanism 2 is provided in the middle of the upper side of the test platform 1, a harmonic reducer 3 is provided in the middle of the clamping mechanism 2, the right side of the harmonic reducer 3 is the output end, the left side of the harmonic reducer 3 is the input end, a fixing mechanism 4 is provided on the right side of the harmonic reducer 3, a swing assembly 5 is provided on the left side of the harmonic reducer 3, and an auxiliary supporting mechanism 6 is provided on the left side of the swing assembly 5;

[0032] The clamping mechanism 2 includes a support platform 21, a clamping block 22, a guide assembly 23, an arc-shaped limit groove 24, a threaded hole 25, a screw 26 and a drive motor 27. The support platform 21 is fixed to the middle of the upper side of the test platform 1 by fastening bolts. A clamping block 22 is provided on the upper side of the support platform 21. An arc-shaped limit groove 24 is provided in the middle of the upper side of the support platform 21 and the middle of the lower side of the clamping block 22. The support platform 21 is connected to the clamping block 22 through the guide assembly 23. A threaded hole 25 is provided in the middle of the upper side of the clamping block 22. The screw 26 is threadedly connected to the threaded hole 25. The upper side of the screw 26 passes through the mounting plate and is fixedly connected to the output shaft of the drive motor 27. The screw 26 is rotatably connected to the inside of the mounting plate, and the drive motor 27 is fixed to the mounting plate.

[0033] The support platform 21 is used to support the harmonic reducer 3, the clamping block 22 is used to clamp the harmonic reducer 3, the guide assembly 23 is used to guide the clamping block 22 to move vertically upward and downward, the arc-shaped limit groove 24 is used to place the harmonic reducer 3, the threaded hole 25 is used in conjunction with the screw 26, and the drive motor 27 is used to provide power. By starting the drive motor 27, the screw 26 can be driven to rotate, so that the threaded clamping block 22 moves downward, and the harmonic reducer 3 in the arc-shaped limit groove 24 is clamped and fixed, which is convenient for subsequent testing.

[0034] Among them, the guide assembly 23 includes a circular hole 1 231, a circular hole 232, a guide rod 233 and a cylindrical compression spring 234. The support platform 21 is symmetrically provided with a circular hole 1 231 on the top, and the clamping block 22 is symmetrically provided with a circular hole 232 at the bottom. The centers of the circular holes 1 231 and 232 are on a straight line, the radius of the circular hole 1 231 is smaller than the radius of the circular hole 232, the bottom radius of the guide rod 233 is the same as that of the circular hole 1 231, the bottom of the guide rod 233 is fixedly connected to the bottom of the circular hole 1 231, the middle part of the guide rod 233 passes through the circular hole 232, the clamping block 22 and the mounting plate are fixedly connected to the limit plate, and a cylindrical compression spring 234 is fixedly sleeved inside the circular hole 232, and the cylindrical compression spring 234 is sleeved on the outside of the guide rod 233.

[0035] The circular hole 1 231 and the circular hole 232 are used to limit the guide rod 233 and keep the clamping block 22 vertical to the ground when it falls and is clamped, thereby providing accuracy during testing. The guide rod 233 is used to guide the clamping block 22, and the cylindrical compression spring 234 is used to buffer the extrusion impact generated during clamping.

[0036] The fixing mechanism 4 includes a guide rail 41, a slide rail 42, a mounting seat 43, a fixed shaft 44 and a cylinder 45. A symmetrically distributed guide rail 41 is fixedly installed on the upper right end of the test platform 1. A guide rail 41 is slidably provided on the upper side of each guide rail 41. A mounting seat 43 is fixedly connected to the upper side of the guide rail 41. A fixed shaft 44 is fixedly connected to the side of the mounting seat 43 close to the harmonic reducer 3. The fixed shaft 44 has the same inner diameter as the output end of the right side of the harmonic reducer 3. The side of the mounting seat 43 away from the harmonic reducer 3 is fixedly connected to the output shaft of the cylinder 45.

[0037] The guide rail 41 is used to guide the slide rail 42 to slide, the slide rail 42 supports the mounting seat 43, the mounting seat 43 is used to fix the fixed shaft 44, the fixed shaft 44 is used to limit the harmonic reducer 3, the cylinder 45 is used to provide power for horizontal movement, and starting the cylinder 45 can push the mounting seat 43 to move horizontally. At the same time, the slide rail 42 slides horizontally on the guide rail 41, and the fixed shaft 44 is inserted into the right output end of the harmonic reducer 3 to fix the output end of the harmonic reducer 3.

[0038] The swing assembly 5 includes a fixed plate 51, a swing member 52, a fastening bolt 53, a fixed sleeve 54 and a connecting shaft 55. There are two fixed plates 51 that are symmetrically distributed. The swing member 52 is fixedly connected between the two fixed plates 51. The two fixed plates 51 and the swing member 52 are fixedly connected by the fastening bolts 53. The right side of the right fixed plate 51 is fixedly connected with a fixed sleeve 54. The fixed sleeve 54 is fixedly sleeved on the left output end of the harmonic reducer 3. The connecting shaft 55 passes through the two fixed plates 51 and the swing member 52 to the outside.

[0039] The fixing plate 51 is used to fix the swinging member 52, and the swinging member 52 is used to better present the tiny angular displacement of the input end of the harmonic reducer 3, so as to facilitate the testing of the return backlash. The fastening bolts 53 are used to fix the fixing plate 51 and the swinging member 52 together. The fixing sleeve 54 is used to connect the input end of the reducer 3, and the connecting shaft 55 is used to connect to the auxiliary support mechanism 6.

[0040] The auxiliary support mechanism 6 includes a guide rail 61, a slide rail 62, a fixed seat 63, a support sleeve 64 and a hydraulic cylinder 65. The guide rail 61 is fixedly installed on the upper side of the left end of the test platform 1. The slide rail 62 is slidably provided on the upper side of the guide rail 61. The fixed seat 63 is fixedly connected to the upper side of the slide rail 62. The end of the fixed seat 63 close to the swing component 5 is fixedly provided with a support sleeve 64. The inner diameter of the support sleeve 64 is the same as the outer diameter of the connecting shaft 55. The end of the fixed seat 63 away from the swing component 5 is fixedly connected to the output shaft of the hydraulic cylinder 65. The hydraulic cylinder 65 is fixed on the test platform 1.

[0041] The guide rail 61 is used for the horizontal sliding of the slide rail 62, the slide rail 62 is used to fix and drive the fixed seat 63 to move, the fixed seat 63 is used to fix the support sleeve 64, the support sleeve 64 is used to connect the swing assembly 5, and the hydraulic cylinder 65 is used to provide power for horizontal sliding. Starting the hydraulic cylinder 65 can push the fixed seat 63 to move horizontally. At the same time, the slide rail 62 can slide horizontally on the guide rail 61, so that the guide rail 61 is sleeved on the outside of the connecting shaft 55 to support the swing assembly 5. At this time, the swing assembly 5 no longer rotates.

[0042] It also includes a counterweight block 7 and a test device 8. A hook is fixedly connected to the upper side of the counterweight block 7, and the hook is movably connected to the right hanging part of the swing assembly 5. There are two test devices 8 and they are symmetrically arranged on the front and rear sides of the auxiliary support mechanism 6. The front of the test device 8 corresponds to the hanging part of the swing assembly 5.

[0043] A counterweight block 7 of appropriate weight is placed on the right hanging part of the swing component 5, the auxiliary support mechanism 6 is removed, and the right side of the swing component 5 is rotated clockwise. At this time, the testing device 8 records the angle at this moment. Similarly, the angle of rotation on the left side is recorded. This value is a negative value. The difference between the two values ​​is the return backlash value.

[0044] The working principle of a harmonic reducer return backlash test platform provided by the utility model is as follows: the support table 21 is used to support the harmonic reducer 3, the clamping block 22 is used to clamp the harmonic reducer 3, the guide assembly 23 is used to guide the clamping block 22 to move vertically upward and downward, the arc-shaped limit groove 24 is used to place the harmonic reducer 3, the threaded hole 25 is used in conjunction with the screw 26, and the drive motor 27 is used to provide power. By starting the drive motor 27, the screw 26 can be driven to rotate, so that the threaded clamping block 22 moves downward, and the harmonic reducer 3 in the arc-shaped limit groove 24 is clamped and fixed, which is convenient for subsequent testing. The first hole 231 and the second hole 232 are used for limiting the guide rod 233 and keeping the clamping block 22 in a vertical state with the ground when falling and clamping, so as to provide accuracy during testing. The guide rod 233 is used to guide the clamping block 22, and the cylindrical compression spring 234 is used to buffer the extrusion impact generated during clamping. The guide rail 41 is used to guide the slide rail 42 to slide, and the slide rail 42 supports the mounting seat 43. The mounting seat 43 is used to fix the fixed shaft 44, and the fixed shaft 44 is used to limit the harmonic reducer 3. The cylinder 45 is used to provide power for horizontal movement. Starting the cylinder 45 can push the mounting seat 43 to move horizontally, and at the same time, the slide rail 42 slides horizontally on the guide rail 41. The fixed shaft 44 is inserted into the right output end of the harmonic reducer 3 to fix the output end of the harmonic reducer 3. The fixed plate 51 is used to fix the swinging member 52. The swinging member 52 is used to better present the small angular displacement of the input end of the harmonic reducer 3, which is convenient for testing the return backlash. The fastening bolts 53 are used to fix the fixed plate 51 and the swinging member 52 together. The fixed sleeve 54 is used to connect the input end of the reducer 3. The connecting shaft 55 is used to be connected to the auxiliary support mechanism 6. The guide rail 61 is used for the horizontal sliding of the slide rail 62. The slide rail 62 is used to fix and drive the fixed seat 63 to move. The fixed seat 63 is used to fix the support sleeve 64. The support sleeve 64 is used Connect the swing assembly 5, and the hydraulic cylinder 65 is used to provide power for horizontal sliding. Starting the hydraulic cylinder 65 can push the fixed seat 63 to move horizontally. At the same time, the slide rail 62 can slide horizontally on the guide rail 61, so that the guide rail 61 is sleeved on the outside of the connecting shaft 55 to support the swing assembly 5. At this time, the swing assembly 5 no longer rotates, and a counterweight block 7 of appropriate weight is placed on the right hanging part of the swing assembly 5. The auxiliary support mechanism 6 is removed, and the right side of the swing assembly 5 rotates clockwise. At this time, the test device 8 records the angle at this moment. Similarly, the angle of rotation on the left side is recorded. This value is a negative value, and the difference between the two values ​​is the return backlash value.

[0045] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A harmonic reducer return backlash test platform, characterized by: It comprises a test platform (1), a clamping mechanism (2), a fixing mechanism (4), a swinging assembly (5) and an auxiliary supporting mechanism (6); A clamping mechanism (2) is provided in the middle of the upper side of the test platform (1), a harmonic reducer (3) is provided in the middle of the clamping mechanism (2), the right side of the harmonic reducer (3) is an output end, the left side of the harmonic reducer (3) is an input end, a fixing mechanism (4) is provided on the right side of the harmonic reducer (3), a swing assembly (5) is provided on the left side of the harmonic reducer (3), and an auxiliary supporting mechanism (6) is provided on the left side of the swing assembly (5); The clamping mechanism (2) comprises a support platform (21), a clamping block (22), a guide assembly (23), an arc-shaped limiting groove (24), a threaded hole (25), a screw rod (26) and a driving motor (27). The support platform (21) is fixed to the middle part of the upper side of the testing platform (1) by means of fastening bolts. A clamping block (22) is provided on the upper side of the support platform (21). An arc-shaped limiting groove (24) is provided in the middle part of the upper side of the support platform (21) and in the middle part of the lower side of the clamping block (22). The support platform (21) is connected to the clamping block (22) by means of the guide assembly (23). A threaded hole (25) is provided in the middle part of the upper side of the clamping block (22). The screw rod (26) is threadedly connected to the threaded hole (25). The upper side of the screw rod (26) passes through the mounting plate and is fixedly connected to the output shaft of the driving motor (27). The screw rod (26) is rotationally connected to the inside of the mounting plate. The driving motor (27) is fixed to the mounting plate.

2. A harmonic reducer return backlash test platform according to claim 1, characterized in that: The guide assembly (23) comprises a circular hole 1 (231), a circular hole 2 (232), a guide rod (233) and a cylindrical compression spring (234). The top of the support platform (21) is symmetrically provided with the circular hole 1 (231), and the bottom of the pressing block (22) is symmetrically provided with the circular hole 2 (232). The centers of the circular hole 1 (231) and the circular hole 2 (232) are on a straight line, and the radius of the circular hole 1 (231) is smaller than that of the circular hole 2 (232). ), the radius of the bottom of the guide rod (233) is the same as that of the circular hole 1 (231), the bottom of the guide rod (233) is fixedly connected to the bottom of the circular hole 1 (231), the middle of the guide rod (233) passes through the circular hole 2 (232), the clamping block (22) and the mounting plate and is fixedly connected to the limit plate, the inside of the circular hole 2 (232) is fixedly sleeved with a cylindrical compression spring (234), and the cylindrical compression spring (234) is sleeved on the outside of the guide rod (233).

3. A harmonic reducer return backlash test platform according to claim 1, characterized in that: The fixing mechanism (4) comprises a guide rail (41), a slide rail (42), a mounting seat (43), a fixed shaft (44) and a cylinder (45); a symmetrically distributed guide rail (41) is fixedly mounted on the upper right end of the test platform (1); a guide rail (41) is slidably mounted on the upper side of each guide rail (41); a mounting seat (43) is fixedly connected to the upper side of the guide rail (41); a fixed shaft (44) is fixedly connected to the side of the mounting seat (43) close to the harmonic reducer (3); the fixed shaft (44) has the same inner diameter as the output end of the right side of the harmonic reducer (3); and a side of the mounting seat (43) away from the harmonic reducer (3) is fixedly connected to the output shaft of the cylinder (45).

4. A harmonic reducer return backlash test platform according to claim 1, characterized in that: The swing assembly (5) comprises a fixed plate (51), a swing member (52), a fastening bolt (53), a fixed sleeve (54) and a connecting shaft (55); the fixed plates (51) are provided with two symmetrically distributed ones; a swing member (52) is fixedly connected between the two fixed plates (51); the two fixed plates (51) and the swing member (52) are fixedly connected via the fastening bolt (53); the right side of the right fixed plate (51) is fixedly connected with a fixed sleeve (54); the fixed sleeve (54) is fixedly sleeved on the left output end of the harmonic reducer (3); and the connecting shaft (55) passes through the two fixed plates (51) and the swing member (52) to the outside.

5. The harmonic reducer return backlash test platform according to claim 1, characterized in that: The auxiliary support mechanism (6) comprises a second guide rail (61), a second slide rail (62), a fixed seat (63), a support sleeve (64) and a hydraulic cylinder (65); the second guide rail (61) is fixedly installed on the upper side of the left end of the test platform (1); the second slide rail (62) is slidably provided on the upper side of the second guide rail (61); the upper side of the second slide rail (62) is fixedly connected with a fixed seat (63); the end of the fixed seat (63) close to the swing assembly (5) is fixedly provided with a support sleeve (64); the inner diameter of the support sleeve (64) is the same as the outer diameter of the connecting shaft (55); the end of the fixed seat (63) away from the swing assembly (5) is fixedly connected to the output shaft of the hydraulic cylinder (65); and the hydraulic cylinder (65) is fixed on the test platform (1).

6. A harmonic reducer return backlash test platform according to claim 1, characterized in that: It also includes a counterweight (7) and a test device (8). A hook is fixedly connected to the upper side of the counterweight (7), and the hook is movably connected to the right hanging part of the swing assembly (5). There are two test devices (8) and they are symmetrically arranged on the front and rear sides of the auxiliary support mechanism (6). The front of the test device (8) corresponds to the hanging part of the swing assembly (5).

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