A comprehensive performance test system for a reducer transmission shaft

Abstract

The present application relates to the technical field of transmission shaft performance detection, in particular to a kind of comprehensive performance test system of speed reducer transmission shaft, including bottom frame, bottom frame inside is sequentially provided with preliminary measurement mechanism and dynamic measurement mechanism from right to left, wherein, preliminary measurement mechanism includes the cylinder one of being set in the center of bottom frame one side inner wall, the output end of cylinder one is fixedly connected with recessed frame by push rod, and recessed frame inside is clamped with the vertical frame of rectangle, motor one is arranged in the center of vertical frame one side, and the output end of motor one is fixedly installed with long frame, motor two is arranged in the inner wall of long frame one side, the output end of motor two is sequentially connected with two groups of spiral guide rods, and two groups of spiral guide rods are oppositely threaded arrangement;The present application is integrated to the multidimensional test function of basic rotating speed, shock resistance, axial resistance, rotational resistance and other of transmission shaft, realizes the accurate evaluation of comprehensive performance of speed reducer transmission shaft under complex working condition, provides reliable basis for design optimization and quality control.

Description

Technical Field

[0001] This invention relates to the field of transmission shaft performance testing technology, specifically a comprehensive performance testing system for a speed reducer transmission shaft. Background Technology

[0002] As a core component of mechanical transmission systems, speed reducers are widely used in fields such as engineering machinery, automobile manufacturing, wind power generation, and industrial robots. Their technical performance directly affects the reliability, operating efficiency, and service life of the equipment.

[0003] As a key component in a speed reducer that transmits power and torque, the drive shaft must withstand complex mechanical loads, dynamic excitations, and environmental factors. Its comprehensive performance is the core indicator for evaluating the overall performance of the speed reducer.

[0004] Currently, the industry mainly relies on single-function testing equipment for the performance testing of drive shafts, such as the runout detection equipment for reducer drive shafts disclosed in CN216432835U. Although it can detect the runout of reducer drive shafts, it is difficult to simulate complex actual loads, the test conditions are limited, and the test results are prone to significant discrepancies with actual engineering requirements, making it impossible to accurately assess the reliability of drive shafts. Therefore, a solution is proposed. Summary of the Invention

[0005] The purpose of this invention is to integrate multi-dimensional testing functions for the basic speed, vibration resistance, axial resistance, and rotational resistance of the drive shaft, so as to achieve a comprehensive and accurate evaluation of the drive shaft's performance under complex working conditions, and provide a reliable basis for design optimization and quality control.

[0006] The objective of this invention can be achieved through the following technical solution: a comprehensive performance testing system for a speed reducer drive shaft, comprising a base frame, wherein a preliminary testing mechanism and a dynamic testing mechanism are arranged sequentially from right to left inside the base frame;

[0007] The initial measurement mechanism includes a cylinder 1 located at the center of the inner wall on one side of the bottom frame. The output end of the cylinder 1 is fixedly connected to a concave frame via a push rod, and a rectangular vertical frame is clamped inside the concave frame. A motor 1 is located at the center of one side of the vertical frame, and a long frame is fixedly installed at the output end of the motor 1.

[0008] A second motor is installed on the inner wall of one side of the long frame. Two sets of spiral guide rods are sequentially connected to the output end of the second motor. The two sets of spiral guide rods are arranged with opposite threads. A sliding frame is spirally sleeved on the outside of the two sets of spiral guide rods. The end of the sliding frame extends to the outside of the long frame and is fixedly installed with a clamping frame. Semi-cylindrical grooves are provided on the opposite sides of the two sets of clamping frames.

[0009] The inner wall of the rear end of the bottom frame is provided with a corrugated groove, and transverse grooves are provided at both ends of the corrugated groove.

[0010] Furthermore, a round shaft fixedly installed at the center of the rear end of the vertical frame moves inside one of the horizontal grooves. A sliding shaft is fixedly installed on one side wall of the vertical frame at the upper and lower ends of the motor. The two sets of sliding shafts are respectively engaged in the slots set at the upper and lower ends of the concave frame. A spring damping shock absorber is provided between the sliding shaft and the inner wall of the slot.

[0011] Furthermore, the dynamic measurement mechanism includes a positioning frame disposed in a concave structure, and a connecting rod is rotatably disposed at the center of one side of the positioning frame, with one end of the connecting rod extending to the outside of the positioning frame and a clamping cylinder fixedly installed thereon.

[0012] Furthermore, the inner wall of the clamping cylinder is provided with several sets of slots at equal intervals, and several sets of inclined abutments are provided inside the slots. The bottom of the abutments is hinged to an abutment shaft. Several sets of abutments extend to one end of the outside of the clamping cylinder and are hinged to a rotating ring. A positioning ring is fixedly sleeved on the outside of the clamping cylinder adjacent to the rotating ring. An inclined cylinder two is provided at the top of the positioning ring near the rotating ring. The output end of the cylinder two is hinged to the side wall of the rotating ring through an inclined push rod.

[0013] Furthermore, a storage rod is fixedly installed at the center of the inner wall of the positioning frame on the side away from the string rod, and several sets of counterweight rings are sleeved on the outside of the storage rod. Each set of counterweight rings has a ring magnetic sheet fixedly installed on both sides. The two sets of ring magnetic sheets on the left and right are symmetrical and have opposite magnetic poles. Vertical grooves are provided on one side of the inner wall of the positioning frame and at the upper and lower ends of the storage rod. Lifting rods are horizontally arranged through the two sets of vertical grooves.

[0014] Furthermore, one end of each of the two sets of lifting rods extends into the interior of the positioning frame and is fixedly installed with a wedge-shaped lever on the opposite side. The upper and lower sets of wedge-shaped levers are mirror-symmetrical. The other end of each of the two sets of lifting rods extends into the outer wall of the positioning frame and is fitted with a push plate. The upper and lower ends of the push plate are provided with slots. The bottom of the lifting rod passes through the slot. The outside of the lifting rod and the two sides of the slot are fixedly fitted with collars. A cylinder three is installed at the center of the side of the push plate away from the positioning frame through a push rod. The cylinder three is installed on the inner side wall of the bottom frame through a base.

[0015] Furthermore, two sets of lifting rods are respectively fixedly sleeved with rings on the outside of the two sets and located on one side of the positioning frame, and a spiral sleeve frame is fixedly installed at the front end of the rings. The spiral rotating rods are respectively spirally sleeved inside the upper and lower sets of spiral sleeve frames. The threads of the upper and lower sets of spiral rotating rods are arranged in opposite directions, and a dual-axis motor is arranged between them. The dual-axis motor is fixedly connected to the outer wall of the positioning frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention is achieved by setting up a preliminary testing mechanism. First, the spiral guide rod with two sets of reverse threads is rotated to realize the opposite movement of the sliding frame, which drives the clamping frame to adaptively clamp the transmission shaft. On this basis, rotation test and vibration test are carried out. Rotation test: Motor 1 drives the long frame to make circular motion, which drives the spiral guide rod, clamping frame and transmission shaft to rotate synchronously, realizing the dynamic parameter acquisition at the basic speed.

[0018] Vibration test: The cylinder pushes the concave frame to move horizontally, and the round shaft of the vertical frame slides in the corrugated groove of the bottom frame, simulating the up and down floating of the transmission shaft in actual operation.

[0019] 2. The present invention also achieves axial resistance testing and rotational resistance composite recording testing by setting a dynamic testing mechanism. Axial ballast simulation: When the drive shaft is rotating, the end is inserted into the clamp, the cylinder drives the rotating ring to rotate, and the traction plate retracts to clamp the end of the drive shaft. When rotating, the drive shaft and the plate continuously press against each other, generating axial resistance, simulating axial preload or impact conditions, and evaluating the compressive and impact resistance performance of the drive shaft.

[0020] Adjustable rotational resistance loading: The reverse-threaded helical rod is driven by a dual-axis motor to control the movement of the upper and lower helical sleeves and rings, which drives the wedge-shaped pawls to insert or retract between adjacent ring magnetic plates, realizing the rapid separation and engagement of the counterweight clasps. By increasing or decreasing the number of counterweight clasps on the connecting rod, the rotational resistance of the drive shaft during rotation can be flexibly adjusted to simulate the performance under different load conditions and improve the comprehensiveness of the test data.

[0021] In summary, this test system, through the synergistic effect of adaptive clamping and multi-degree-of-freedom dynamic simulation, achieves accurate comprehensive performance evaluation of the reducer drive shaft under complex working conditions, providing a reliable basis for design optimization and quality control. Attached Figure Description

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a rear view showing the combination of a partial structure of the bottom frame and the preliminary measurement mechanism of the present invention.

[0025] Figure 3 This is a side view of the long frame structure of the present invention;

[0026] Figure 4 This is a three-dimensional schematic diagram of the combination of a partial structure of the bottom frame and the dynamic measurement mechanism of the present invention;

[0027] Figure 5 This is a partial schematic diagram of the dynamic measurement mechanism of the present invention;

[0028] Figure 6 This is a partial top view of the dynamic measurement mechanism of the present invention;

[0029] Figure 7 This is a partial three-dimensional schematic diagram of the dynamic measurement mechanism of the present invention.

[0030] In the diagram: 1. Base frame; 2. Initial measurement mechanism; 21. Cylinder 1; 22. Concave clamping frame; 23. Vertical frame; 24. Motor 1; 25. Long frame; 26. Motor 2; 27. Spiral guide rod; 271. Sliding frame; 28. Clamping frame; 29. ​​Round shaft; 210. Sliding shaft; 211. Spring damping shock absorber ring; 3. Dynamic measurement mechanism; 31. Positioning frame; 32. Stringing rod; 33. Clamping cylinder; 331. Abutment plate; 332. Abutment shaft; 333. Rotating ring; 334. Positioning ring; 335. Cylinder 2; 34. Material storage rod; 35. Counterweight clamping ring; 36. Ring magnetic plate; 37. Lifting rod; 371. Collar ring; 38. Wedge-shaped paddle; 39. Push plate; 310. Cylinder 3; 311. Circular ring; 312. Spiral collar frame; 313. Spiral rotating rod; 314. Dual-axis motor. Detailed Implementation

[0031] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figure 1 - Figure 3 As shown, a comprehensive performance testing system for a speed reducer drive shaft includes a base frame 1, inside which a preliminary testing mechanism 2 and a dynamic testing mechanism 3 are arranged sequentially from right to left.

[0033] The initial measurement mechanism 2 includes a cylinder 21 located at the center of the inner wall of one side of the bottom frame 1. The output end of the cylinder 21 is fixedly connected to a concave frame 22 via a push rod. A rectangular vertical frame 23 is clamped inside the concave frame 22. A motor 24 is located at the center of one side of the vertical frame 23. A long frame 25 is fixedly installed at the output end of the motor 24.

[0034] A second motor 26 is provided on the inner wall of one side of the long frame 25. Two sets of spiral guide rods 27 are sequentially connected to the output end of the second motor 26. The two sets of spiral guide rods 27 are arranged with reverse threads. A sliding frame 271 is spirally sleeved on the outside of the two sets of spiral guide rods 27. The end of the sliding frame 271 extends to the outside of the long frame 25 and is fixedly installed with a clamping frame 28. Semi-cylindrical grooves are provided on the opposite sides of the two sets of clamping frames 28.

[0035] The inner wall of the rear end of the bottom frame 1 is provided with a corrugated groove, and the two ends of the corrugated groove are provided with horizontal grooves. The round shaft 29 fixedly installed at the center of the rear end of the vertical frame 23 moves inside one of the horizontal grooves. The side wall of the vertical frame 23 and the upper and lower ends of the motor 24 are respectively fixedly installed with sliding shafts 210. The two sets of sliding shafts 210 are respectively engaged in the slots provided at the upper and lower ends of the side frame of the concave frame 22. A spring damping shock absorber ring 211 is provided between the sliding shaft 210 and the inner wall of the slot.

[0036] Pre-installation stage: First, place one end of the drive shaft between the two sets of clamping frames 28, then start the second motor 26 to drive the two sets of spiral guide rods 27 to rotate in the same direction. Since the external threads of the two sets of spiral guide rods 27 are set oppositely, the slide frame 271 is forced to move towards each other outside the spiral guide rods 27, which drives the two sets of clamping frames 28 to move towards each other until one end of the drive shaft is clamped.

[0037] Preliminary testing phase one: Start motor 24 to drive long frame 25 to make circular motion. Long frame 25 drives spiral guide rod 27 and clamping frame 28 to make circular motion. Clamping frame 28 drives transmission shaft to make circular motion. At this time, the basic speed of transmission shaft can be tested so as to record the basic dynamic parameters of transmission shaft under normal rotation.

[0038] Preliminary Test Phase Two: Based on Test Phase One, cylinder 21 is activated to drive the push rod to extend and retract. The push rod pushes the concave frame 22 and the vertical frame 23 to move horizontally in a straight line. The vertical frame 23 drives the round shaft 29 to move horizontally in a straight line inside the corrugated groove, which forces the vertical frame 23 and the clamped transmission shaft to float up and down. The vertical frame 23 also drives the sliding shaft 210 to slide inside the slot. At this time, the spring damping shock absorber ring 211 plays a shock absorption and buffering role on the sliding shaft 210. By conducting up and down floating tests on the transmission shaft under rotation, the vibration environment of the transmission shaft in actual operation is simulated, and the dynamic parameters of the transmission shaft under vibration are recorded to evaluate its vibration resistance performance.

[0039] Meanwhile, the circular shaft 29 stops oscillating up and down until it slides to the transverse groove on the other side of the corrugated groove, and the other end of the transmission shaft extends to the dynamic measurement mechanism 3 for the measurement stage.

[0040] Example 2: Please refer to Figure 4 - Figure 6 As shown, the dynamic measurement mechanism 3 includes a positioning frame 31 set in a concave structure, and a connecting rod 32 is rotatably set at the center of one side of the positioning frame 31. One end of the connecting rod 32 extends to the outside of the positioning frame 31 and is fixedly installed with a clamp 33.

[0041] Based on Example 1, cylinder 21 continuously pushes the dynamic measuring mechanism 3 of the transmission shaft to move, and the end of the transmission shaft is inserted into the inside of the clamp 33. The end of the transmission shaft in the self-rotating state continuously presses against the inner wall of the clamp 33, and applies a compressive load along the axis of the transmission shaft to simulate axial preload or impact conditions.

[0042] The inner wall of the clamping cylinder 33 is provided with several sets of slots at equal intervals, and several sets of inclined abutment pieces 331 are provided inside the slots. The bottom of the abutment piece 331 is hinged to the abutment shaft 332. Several sets of abutment pieces 331 extend to one end of the outside of the clamping cylinder 33 and are hinged to a rotating ring 333. A positioning ring 334 is fixedly sleeved on the outside of the clamping cylinder 33 at the position adjacent to the rotating ring 333. An inclined cylinder 335 is provided at the top of the positioning ring 334 near the rotating ring 333. The output end of the cylinder 335 is hinged to the side wall of the rotating ring 333 through an inclined push rod.

[0043] During this process, the starting cylinder 335 uses a push rod to drive the rotating ring 333 to rotate. The rotating ring 333 pulls several sets of abutment plates 331 to rotate around the abutment shaft 332. During the rotation, the several sets of abutment plates 331 gradually retract to the inner wall of the clamping cylinder 33 until the end of the drive shaft is tightly clamped inside the clamping cylinder 33. During the rotation of the drive shaft, the end of the drive shaft and the abutment plates 331 continuously press against each other. Therefore, the drive shaft will be subject to the resistance given by the abutment plates 331 during the rotation. At this time, the rotation state of the drive shaft under the resistance can be observed to judge the overall performance of the drive shaft.

[0044] In addition, after the dynamic test is completed, the push rod of cylinder 2 335 resets, causing the rotating ring 333 to rotate in the opposite direction. The rotating ring 333 causes the abutment 331 to gradually open. At this time, the drive shaft can be removed from the inside of the clamp 33. The operation is simple and quick, which facilitates the replacement of the drive shaft and the reset of the dynamic test mechanism.

[0045] Example 3: Please refer to Figures 4-7 As shown, a storage rod 34 is fixedly installed at the center of the inner wall of the positioning frame 31 on the side away from the string rod 32, and several sets of counterweight rings 35 are sleeved on the outside of the storage rod 34. Each set of counterweight rings 35 has a ring magnetic sheet 36 fixedly installed on both sides. The two sets of ring magnetic sheets 36 on the left and right are opposite magnetic poles and attract each other.

[0046] Vertical grooves are provided on one inner wall of the positioning frame 31 and at the upper and lower ends of the storage rod 34. Lifting rods 37 are horizontally inserted through the two sets of vertical grooves. One end of each lifting rod 37 extends into the interior of the positioning frame 31 and a wedge-shaped lever 38 is fixedly installed on the opposite side. The upper and lower sets of wedge-shaped levers 38 are mirror-symmetrical. The other end of each lifting rod 37 extends into the outer wall of the positioning frame 31 and is sleeved with a push plate 39. The upper and lower ends of the push plate 39 are provided with slots. The bottom of the lifting rod 37 passes through the slots, and collars 371 are fixedly sleeved on the outside of the lifting rod 37 on both sides of the slots.

[0047] A cylinder 310 is installed at the center of the push plate 39 away from the positioning frame 31 via a push rod, and the cylinder 310 is installed on the inner side wall of the bottom frame 1 via a base. Two sets of lifting rods 37 are respectively fixedly sleeved with rings 311 on the outside and on one side of the positioning frame 31, and a spiral sleeve 312 is fixedly installed at the front end of the rings 311. The upper and lower sets of spiral sleeves 312 are respectively spirally sleeved with spiral rotating rods 313. The threads of the upper and lower sets of spiral rotating rods 313 are arranged in opposite directions, and a dual-axis motor 314 is arranged between them. The dual-axis motor 314 is fixedly connected to the outer side wall of the positioning frame 31.

[0048] During the resistance detection stage, the connecting rod 32 and the clamping cylinder 33 rotate synchronously. The rotation resistance is increased by continuously clamping the heavy-duty clamping ring 35 on the connecting rod 32. The specific installation process is as follows: First, the starting cylinder 310 uses the push rod to pull the push plate 39 to move, and at the same time drives the lifting rod 37 and the wedge-shaped paddle 38 to move, so that the upper and lower sets of wedge-shaped paddles 38 move to the appropriate position and align with the interval of the two adjacent sets of ring magnetic plates 36.

[0049] Next, the dual-axis motor 314 is started to drive the upper and lower sets of spiral rods 313 to rotate relative to or in opposite directions. Since the threads of the upper and lower sets of spiral rods 313 are opposite, the spiral rods 313 drive the upper and lower sets of spiral sleeves 312 and the upper and lower sets of rings 311 to move relative to each other, and the upper and lower sets of lifting rods 37 also move closer to each other until the tips of the upper and lower sets of wedge-shaped paddles 38 are inserted into the gaps between the adjacent sets of ring magnetic plates 36, thereby realizing the separation of the adjacent sets of counterweight rings 35.

[0050] Subsequently, the cylinder 310 pushes the counterweight retaining ring 35 at the separation point to be sleeved on the outside of the string rod 32. When the lifting rod 37 moves, it drives the wedge-shaped paddle 38 to move synchronously. The tip of the wedge-shaped paddle 38 paddles the counterweight retaining ring 35, causing it to move along the outside of the storage rod 34 to the string rod 32 until the counterweight retaining ring 35 is sleeved on the outside of the string rod 32. Through this process, the installation of the counterweight retaining ring 35 is completed.

[0051] The wedge-shaped paddle 38 is used to press and limit the counterweight retaining ring 35 sleeved on the outside of the connecting rod 32 to prevent it from falling off when the clamp 33 rotates. During the installation process, the magnitude of the rotational resistance can be controlled by observing the number of counterweight retaining rings 35, thereby realizing the performance test of the reducer drive shaft under different resistance conditions and further improving the accuracy of the experimental data.

[0052] It is worth noting that after the counterweight test is completed, the above steps need to be repeated again. First, the wedge-shaped paddle 38 is raised, and then the cylinder 310 is used to push the push plate 39 to move to the appropriate position. Subsequently, the wedge-shaped paddle 38 sinks to the side of the counterweight retaining ring 35 outside the string rod 32, and the counterweight retaining ring 35 is forced to return to the storage rod 34 by the reset movement of the push plate 39.

[0053] Working principle:

[0054] Firstly, the opposing thread design of the two sets of spiral guide rods 27 enables the sliding frame 271 to move in opposite directions, driving the clamping frame 28 to adaptively clamp transmission shafts of different diameters, resulting in uniform and stable clamping force.

[0055] Self-rotation test: Motor 24 drives the long frame 25 to make circular motion, which drives the spiral guide rod 27, clamping frame 28 and transmission shaft to rotate synchronously, realizing dynamic parameter acquisition at the basic speed.

[0056] Vibration test: Cylinder 21 pushes the concave frame 22 to move horizontally, and the round shaft 29 of the vertical frame 23 slides in the corrugated groove of the bottom frame 1 to simulate the up and down floating of the transmission shaft in actual operation. The sliding shaft 210 cooperates with the spring damping shock absorber 211 in the groove of the concave frame 22 to buffer the floating impact and protect the transmission shaft and sensor.

[0057] Axial resistance test: When the drive shaft is rotating, the end is inserted into the clamp 33. The cylinder 335 drives the rotating ring 333 to rotate, and the pull plate 331 retracts to clamp the end of the drive shaft. During rotation, the drive shaft and the pull plate 331 continuously press against each other, generating axial resistance. This simulates axial preload or impact conditions to evaluate the compressive and impact resistance performance of the drive shaft.

[0058] Dynamic rotational resistance loading simulation: First, the dual-axis motor 314 drives the reverse-threaded spiral rod 313 to control the movement of the upper and lower spiral sleeves 312 and the ring 311, which drives the wedge-shaped pawl 38 to insert or retract from the interval of the adjacent ring magnetic plate 36, realizing the rapid separation and engagement of the counterweight retaining ring 35; the counterweight retaining ring 35 moves along the storage rod 34 to the outside of the string rod 32, and is fixed by the wedge-shaped pawl 38 to prevent it from falling off; then, by increasing or decreasing the number of counterweight retaining rings 35 on the string rod 32, the rotational resistance when the transmission shaft rotates is flexibly adjusted to simulate the performance under different load conditions and improve the comprehensiveness of the test data;

[0059] It integrates multi-dimensional testing functions such as basic speed test, vibration performance test, axial resistance test, and rotational resistance test to comprehensively evaluate the strength, fatigue life, and stability of the drive shaft.

[0060] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A comprehensive performance testing system for a speed reducer drive shaft, comprising a base frame (1), characterized in that: The bottom frame (1) is provided with a preliminary measurement mechanism (2) and a dynamic measurement mechanism (3) arranged from right to left inside. The initial measurement mechanism (2) includes a cylinder (21) located at the center of the inner wall of one side of the bottom frame (1). The output end of the cylinder (21) is fixedly connected to a concave frame (22) via a push rod. A rectangular vertical frame (23) is clamped inside the concave frame (22). A motor (24) is located at the center of one side of the vertical frame (23). A long frame (25) is fixedly installed at the output end of the motor (24). A second motor (26) is provided on the inner wall of one side of the long frame (25). Two sets of spiral guide rods (27) are sequentially connected to the output end of the second motor (26). The two sets of spiral guide rods (27) are arranged with reverse threads. A sliding frame (271) is spirally sleeved on the outside of the two sets of spiral guide rods (27). The end of the sliding frame (271) extends to the outside of the long frame (25) and is fixedly installed with a clamping frame (28). Semi-cylindrical grooves are provided on the opposite sides of the two sets of clamping frames (28). The inner wall of the rear end of the bottom frame (1) is provided with a corrugated groove, and transverse grooves are provided at both ends of the corrugated groove. The round shaft (29) fixedly installed at the center of the rear end of the vertical frame (23) moves inside one of the horizontal slots. The vertical frame (23) has a sliding shaft (210) fixedly installed on one side wall and at the upper and lower ends of the motor (24). The two sets of sliding shafts (210) are respectively engaged in the slots set at the upper and lower ends of the concave frame (22). A spring damping shock absorber (211) is provided between the sliding shaft (210) and the inner wall of the slot. The dynamic measurement mechanism (3) includes a positioning frame (31) set in a concave structure, and a connecting rod (32) is rotatably set at the center of one side of the positioning frame (31). One end of the connecting rod (32) extends to the outside of the positioning frame (31) and a clamp (33) is fixedly installed thereon. The inner wall of the clamp (33) is provided with several sets of slots at equal intervals, and several sets of inclined abutments (331) are provided inside the slots. The bottom of the abutments (331) is hinged to an abutment shaft (332). Several sets of abutments (331) extend to one end of the outside of the clamp (33) and are hinged to a rotating ring (333). A positioning ring (334) is fixedly sleeved on the outside of the clamp (33) adjacent to the rotating ring (333). An inclined cylinder (335) is provided at the top of the positioning ring (334) near the rotating ring (333). The output end of the cylinder (335) is hinged to the side wall of the rotating ring (333) through an inclined push rod.

2. The comprehensive performance testing system for a reducer drive shaft according to claim 1, characterized in that, A storage rod (34) is fixedly installed at the center of the inner wall of the positioning frame (31) away from the string rod (32), and several sets of counterweight rings (35) are sleeved on the outside of the storage rod (34). A ring magnetic sheet (36) is fixedly installed on both sides of each set of counterweight rings (35). The two sets of ring magnetic sheets (36) are symmetrical and have opposite magnetic poles. A vertical groove is provided on one side of the inner wall of the positioning frame (31) and at the upper and lower ends of the storage rod (34). A lifting rod (37) is horizontally inserted through the two sets of vertical grooves.

3. The comprehensive performance testing system for a reducer drive shaft according to claim 2, characterized in that, One end of each of the two sets of lifting rods (37) extends into the interior of the positioning frame (31) and is fixedly installed with a wedge-shaped paddle (38) on the opposite side. The two sets of wedge-shaped paddles (38) are mirror symmetrical. The other end of each of the two sets of lifting rods (37) extends into the outer wall of the positioning frame (31) and is fitted with a push plate (39). The push plate (39) has a slot at both the upper and lower ends.

4. The comprehensive performance testing system for a reducer drive shaft according to claim 3, characterized in that, The bottom of the lifting rod (37) passes through the inside of the slot, and the lifting rod (37) is fixedly sleeved with collars (371) on both sides of the slot. The center of the push plate (39) away from the positioning frame (31) is equipped with a cylinder three (310) through the push rod, and the cylinder three (310) is installed on the inner side wall of the bottom frame (1) through the base.

5. The comprehensive performance testing system for a reducer drive shaft according to claim 4, characterized in that, Two sets of lifting rods (37) are respectively fixedly sleeved with rings (311) on the outside and on one side of the positioning frame (31), and a spiral frame (312) is fixedly installed at the front end of the rings (311). The spiral rotating rods (313) are respectively spirally sleeved inside the upper and lower sets of spiral frames (312). The threads of the upper and lower sets of spiral rotating rods (313) are arranged in opposite directions, and a dual-axis motor (314) is arranged between them. The dual-axis motor (314) is fixedly connected to the outer wall of the positioning frame (31).

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