A robot joint component strength detection device

Abstract

This invention relates to the field of component testing, and more particularly to a strength testing device for robot joint components. Existing strength testing devices are not convenient for gradually applying increasing pressure to the inner contact surface of the joint ring during testing, and it is difficult to test the wear resistance of the joint ring under different operating pressures. This results in insufficient and incomplete testing, failing to accurately reflect reality and leading to poor testing results for the joint ring. A robot joint component strength testing device includes: an outer frame with an inlet and outlet; and a support plate with three evenly spaced grooves fixed within the outer frame. An electric slide rail drives an electric slider to rotate a rotating plate via a ball bearing and a positioning ring, causing a clamping rubber block to clamp the joint ring, ensuring stability during testing. A motor drives a rotating frame, a sliding frame, and a testing roller to rotate around the inner side of the joint ring, thereby simulating the actual state of the robot joint during operation and performing fatigue testing on the joint ring.

Description

Technical Field

[0001] This invention relates to the field of component testing, and more particularly to a strength testing device for robot joint components. Background Technology

[0002] Robot joints are one of the important components of robots. Among them, the joint ring is the most important component of the robot joint. The wear of the joint ring will directly affect the use of the robot joint. After the joint ring is produced, it needs to be tested for strength. The traditional testing method is to first clamp the joint ring to be tested, and then use multiple test rollers to continuously roll on the inner contact surface of the joint ring to test the fatigue strength of the joint ring.

[0003] Because the pressure on the joint ring changes constantly during robot joint operation, existing strength testing devices cannot easily apply increasing pressure to the inner contact surface of the joint ring when performing strength testing, resulting in insufficient testing. Furthermore, friction inevitably occurs in the joint ring during robot joint operation, making it difficult for existing strength testing devices to test the wear resistance of the joint ring under different operating pressures. Consequently, the testing is not comprehensive or realistic, leading to poor testing results for the joint ring. Summary of the Invention

[0004] To overcome the above-mentioned shortcomings, the present invention provides a robot joint component strength testing device, which can gradually apply greater pressure to the inner contact surface of the joint ring and can test the wear resistance of the joint ring under different pressures, making the test more thorough, comprehensive and realistic, and significantly improving the testing effect of the joint ring.

[0005] The technical solution of the present invention is: a strength testing device for robot joint components, comprising:

[0006] The outer frame has an entrance / exit point;

[0007] A support plate with three evenly spaced grooves is fixed inside the outer frame;

[0008] The joint ring is placed on the support plate;

[0009] An electric slide rail is installed on the inner wall of one side of the outer frame, and an electric slider is slidably connected to the electric slide rail.

[0010] A fixed plate is attached to the electric slider;

[0011] The positioning component is mounted on the support plate;

[0012] The clamping mechanism is located between the support plate and the positioning component;

[0013] The testing facility is located on a fixed plate.

[0014] Preferably, the positioning assembly includes: three limiting rods fixed to the bottom of the support plate; a positioning ring slidably connected between the three limiting rods and extending out of the support plate, the upper outer part of the positioning ring contacting the lower inner contact surface of the joint ring; and three tension springs respectively connected between the three limiting rods and the lower part of the positioning ring.

[0015] Preferably, the clamping mechanism includes: three clamping blocks that are slidably connected to three grooves and evenly distributed around the joint ring; three rubber blocks that are respectively disposed on the sides of the three clamping blocks that are close to each other; three sliding rods that are respectively fixed to the bottom of the three clamping blocks and slidably connected to the bottom of the support plate; a rotating shaft that is rotatably connected to the bottom of the outer frame and has two spiral grooves on its upper part; a rotating plate that is fixed to the middle of the rotating shaft and has three arc-shaped grooves, with the ends of the three sliding rods that are close to each other slidably connected to the three arc-shaped grooves; and a pressing frame that is fixed to the middle of the positioning ring and has two protrusions symmetrically arranged on its inner side, with the two protrusions slidably connected to the two spiral grooves respectively.

[0016] Preferably, the detection mechanism includes: a motor mounted on a fixed plate, with the bottom end of the motor's output shaft passing through the fixed plate; a rotating frame fixed to the bottom end of the motor's output shaft; a plurality of ball bearings embedded in the bottom surface of the rotating frame; a plurality of sliding frames slidably connected to the outside of the rotating frame, forming an independent cavity within the rotating frame; a solenoid valve mounted on one side of the top of the rotating frame and communicating with the cavity inside the rotating frame; a plurality of compression springs respectively connected between each sliding frame and the rotating frame; and a plurality of detection rollers rotatably connected to the sides of the sliding frames that are far apart from each other.

[0017] Preferably, the system also includes a strength mechanism located between the fixed plate and the rotating frame. The strength mechanism includes: a limiting frame fixed to the bottom of the fixed plate and having a ring of undulating grooves on its outer side; piston cylinders fixed to the top two sides of the rotating frame, each piston cylinder having two right-angle grooves symmetrically arranged on its upper part that communicate with the outside; two piston rods slidably connected to the bottom of the two piston cylinders; two rollers rotatably connected to the top of the two piston rods, with the ends of the two rollers close to each other located on both sides of the undulating grooves; and a pressure-applying component located between the rotating frame and the piston cylinders.

[0018] Preferably, the undulating groove is formed by four horizontal grooves and four inclined grooves that are connected in an alternating manner.

[0019] Preferably, the pressure application assembly includes: two one-way valves 1 and two one-way valves 2 respectively located on four right-angle slots, with one one-way valve 1 and one one-way valve 2 on each piston cylinder; two pressure airbags are installed inside the rotating frame, and both pressure airbags are connected to the cavity inside the rotating frame; two T-connectors are connected between the two one-way valves 2 and the two pressure airbags on both sides.

[0020] Preferably, the system further includes a friction mechanism disposed between the rotating roller, the sliding frame, the piston cylinder, and the piston rod. The friction mechanism includes: a plurality of toothed posts fixedly connected to the top of each rotating roller; a plurality of locking rods slidably connected to the top of each sliding frame, with the locking rods positioned directly above the toothed posts; compression springs connected between the locking rods and the sliding frames; a plurality of balls embedded in the top of each locking rod; a compression ring slidably connected between the outer sides of the two piston cylinders and with its bottom surface in contact with each ball; and four push-pull rods fixedly connected to the tops of the two piston rods on both sides, with the bottom of each push-pull rod slidably connected to the compression ring.

[0021] Preferably, each lever has a groove at its bottom that is the same shape as the toothed post.

[0022] The beneficial effects of this invention are as follows: 1. The electric slide rail drives the electric slider to move the fixed plate and the detection mechanism downwards together by a certain distance. Several balls will press the positioning ring downwards, while several detection rollers will contact the inner contact surface of the joint ring. The downward movement of the positioning ring will press the rotating shaft and the rotating plate to rotate, so that the three clamping blocks will clamp the joint ring at three points through the three rubber blocks, effectively preventing the joint ring from rotating or displacing during subsequent detection, thereby ensuring stability during the detection process. The motor drives the rotating frame, the sliding frame and the detection rollers to rotate around the inner side of the joint ring. Under the action of the inner contact surface of the joint ring and the compression spring, the detection rollers always remain in contact with the inner contact surface of the joint ring and rotate accordingly, thereby simulating the actual state of the robot joint during operation. Thus, the operator can perform fatigue detection on the joint ring by observing the changes in the joint ring.

[0023] 2. The rotating frame drives the strength mechanism (excluding the limit frame) and the pressure application components to revolve together. While the roller revolves, it generates a reciprocating up-and-down movement trend due to the connection between the flat and inclined grooves of the undulating groove. This, in turn, drives the piston rod to reciprocate up and down intermittently. The reciprocating up and down movement of the piston rod intermittently fills the pressure bladder with external air through the three-way pipe via one-way valve one, one-way valve two, and the piston cylinder. This process causes the detection roller to gradually apply greater pressure to the inner contact surface of the joint ring, simulating the fatigue resistance performance of the joint ring under different operating pressure conditions, making the detection more thorough and improving the detection effect of the joint ring.

[0024] 3. The piston rod reciprocates up and down, driving the compression ring to move intermittently up and down via the push-pull rod. This, in turn, causes the clamping rod to reciprocate once during each period of stable air pressure within the rotating frame cavity and the pressure bladder. Simultaneously, the clamping rod's groove reciprocates up and down, temporarily locking the toothed column. This prevents the detection roller from rotating for a period of time under stable pressure, thus rubbing against the inner contact surface of the joint ring. This process effectively simulates the wear resistance of robot joints under different operating pressure conditions, making the detection more comprehensive and realistic, further enhancing the accuracy and effectiveness of joint ring detection. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention.

[0027] Figure 3 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0028] Figure 4 This is a schematic diagram of the partially disassembled three-dimensional structure of the present invention.

[0029] Figure 5 This is a three-dimensional structural diagram of the positioning component and clamping mechanism of the present invention.

[0030] Figure 6 This is a schematic diagram of the disassembled three-dimensional structure of the positioning component of the present invention.

[0031] Figure 7 This is a three-dimensional structural diagram of the clamping mechanism of the present invention.

[0032] Figure 8 This is a three-dimensional structural diagram of the clamping mechanism of the present invention.

[0033] Figure 9 This is a three-dimensional structural diagram of the detection mechanism of the present invention.

[0034] Figure 10 This is a partial cross-sectional three-dimensional structural schematic diagram of the detection mechanism of the present invention.

[0035] Figure 11 This is a schematic diagram of the disassembled three-dimensional structure of the detection mechanism of the present invention.

[0036] Figure 12 This is a partial cross-sectional perspective view of the three-dimensional structure of the fixing plate, rotating frame, and strength mechanism of the present invention.

[0037] Figure 13 This is a partial cross-sectional perspective view of the rotating frame and strength mechanism of the present invention.

[0038] Figure 14 This is a partial cross-sectional three-dimensional structural schematic diagram of the strength mechanism of the present invention.

[0039] Figure 15 This is a partial cross-sectional perspective view of the piston cylinder and piston rod of the present invention.

[0040] Figure 16 This is a schematic diagram of the disassembled three-dimensional structure of the strength mechanism of the present invention.

[0041] Figure 17 This is a partial three-dimensional structural schematic diagram of the present invention.

[0042] Figure 18 This is a partially disassembled three-dimensional structural diagram of the strength mechanism and friction mechanism of the present invention.

[0043] Figure 19 This is a partial cross-sectional perspective view of the sliding frame, detection roller, and friction mechanism of the present invention.

[0044] In the attached diagram, the markings are: 0: joint ring, 11: outer frame, 12: support plate, 121: slide groove, 13: electric slide rail, 14: electric slider, 15: fixed plate, 21: limit rod, 22: positioning ring, 23: tension spring, 31: clamping block, 32: rubber block, 33: sliding rod, 34: rotating shaft, 341: spiral groove, 35: rotating plate, 351: arc groove, 36: extrusion frame, 361: protrusion, 41: motor, 42: rotating frame, 4 21: Solenoid valve; 43: Ball bearing 1; 44: Sliding frame; 45: Compression spring 1; 46: Detection roller; 51: Limiting frame; 511: Undulating groove; 52: Piston cylinder; 521: Right angle groove; 53: Piston rod; 54: Roller; 551: One-way valve 1; 552: One-way valve 2; 553: Pressure airbag; 554: Three-way pipe; 61: Toothed column; 62: Clamping rod; 63: Compression spring 2; 64: Ball bearing 2; 65: Extrusion ring; 66: Push-pull rod. Detailed Implementation

[0045] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0046] Example 1: A strength testing device for robot joint components, such as Figures 1-19 As shown, it includes:

[0047] An outer frame with one entrance / exit is provided;

[0048] A support plate 12 with three evenly spaced grooves 121 is welded inside the outer frame 11;

[0049] Joint ring 0 is placed on support plate 12;

[0050] An electric slide rail 13 is installed on the inner wall of one side of the outer frame 11, and an electric slider 14 is slidably connected to the electric slide rail 13.

[0051] The fixing plate 15 is connected to the electric slider 14 by bolts;

[0052] A positioning component, used to position the joint ring 0, is mounted on the support plate 12;

[0053] A clamping mechanism is used to clamp the positioned joint ring 0, and is located between the support plate 12 and the positioning component;

[0054] The testing mechanism, used to perform fatigue testing on the inner contact surface of the joint ring 0, is mounted on the fixed plate 15.

[0055] The positioning assembly includes: three evenly spaced limiting rods 21 welded to the bottom of the support plate 12; a positioning ring 22 slidably connected between the three limiting rods 21 and extending out of the support plate 12, the upper outer part of the positioning ring 22 contacting the lower inner contact surface of the joint ring 0, and the positioning ring 22 being used to position the joint ring 0; and three tension springs 23 respectively connected between the three limiting rods 21 and the lower part of the positioning ring 22.

[0056] The clamping mechanism includes: three clamping blocks 31 that are slidably connected to three sliding grooves 121 and evenly distributed around the joint ring 0, for clamping the outer side of the positioned joint ring 0; three rubber blocks 32 that are respectively provided on the side of the three clamping blocks 31 that are close to each other; three sliding rods 33 that are respectively bolted to the bottom of the three clamping blocks 31 and slidably connected to the bottom of the support plate 12; a rotating shaft 34 that is rotatably connected to the bottom of the outer frame 11 and has two spiral grooves 341 on the upper part; a rotating plate 35 that is connected to the middle of the rotating shaft 34 through a keyway and has three arc-shaped grooves 351 that are evenly spaced apart, and the ends of the three sliding rods 33 that are close to each other are slidably connected to the three arc-shaped grooves 351; and a pressing frame 36 that is welded to the middle of the positioning ring 22 and has two protrusions 361 symmetrically provided on the inner side, and the two protrusions 361 are slidably connected to the two spiral grooves 341 respectively.

[0057] The detection mechanism includes: a motor 41 mounted on a fixed plate 15, with the bottom end of the output shaft of the motor 41 passing through the fixed plate 15; a rotating frame 42 bolted to the bottom end of the output shaft of the motor 41; a plurality of balls 43 evenly spaced and embedded in the bottom surface of the rotating frame 42, which can contact the top of the positioning ring 22 to avoid excessive wear; a plurality of sliding frames 44 evenly spaced and slidably connected to the outside of the rotating frame 42, forming an independent cavity within the rotating frame 42; a solenoid valve 421 mounted on one side of the top of the rotating frame 42 and communicating with the internal cavity of the rotating frame 42; a plurality of compression springs 45 respectively connected between each sliding frame 44 and the rotating frame 42; and a plurality of detection rollers 46 rotatably connected to the sliding frames 44 on opposite sides for fatigue testing of the inner contact surface of the joint ring 0.

[0058] First, the operator places the joint ring 0 to be tested in the middle of the support plate 12, so that the lower part of the inner contact surface of the joint ring 0 contacts the upper part of the outer side of the positioning ring 22. The positioning ring 22 will position the joint ring 0 to be tested. After positioning, the operator drives the electric slider 14 to move downward a certain distance through the electric slide rail 13. The electric slider 14 drives the fixed plate 15 and the detection mechanism to move downward together. The downward movement of the rotating frame 42 will cause several balls 43 to squeeze the positioning ring 22 downward. The tension spring 23 is stretched. The contact between the balls 43 and the top of the positioning ring 22 can avoid excessive wear. At the same time, several detection rollers 46 will contact the joint ring 0. The inner contact surfaces make contact, and then the positioning ring 22 continues to move downwards and no longer contacts the joint ring 0. During the downward movement of the positioning ring 22, it will drive the compression frame 36 to move downwards. The downward movement of the compression frame 36 will cause the two protrusions 361 to squeeze the two spiral grooves 341 respectively, causing the rotating shaft 34 to drive the rotating plate 35 to rotate 120°. When the rotating plate 35 rotates, the three arc-shaped grooves 351 will pull the three sliding rods 33 respectively, causing the three clamping blocks 31 to move towards each other. The movement of the three clamping blocks 31 will cause the three rubber blocks 32 to contact the outer side of the joint ring 0 and be squeezed and deformed. In this way, the positioning ring 22 moves downwards and squeezes the rotating shaft 34 and the rotating plate 341. 5. Rotation causes the three clamping blocks 31 to clamp the joint ring 0 at three points via the three rubber blocks 32, effectively preventing the joint ring 0 from rotating or shifting during subsequent testing, thus ensuring stability during the testing process. When the joint ring 0 needs to be tested, the operator starts the motor 41. The output shaft of the motor 41 rotates, driving the rotating frame 42 to rotate, causing the sliding frame 44 and the detection roller 46 to revolve together. When the detection roller 46 revolves, it will rotate along the inner contact surface of the joint ring 0. At the same time, the inner contact surface of the joint ring 0 will first squeeze the detection roller 46, causing the sliding frame 44 to move closer to the rotating frame 42. The compression spring 45 is compressed, and then the detection roller 46... As the robot continues its revolution, the joint ring 0 stops pressing the detection roller 46. The compression spring 45 resets, causing the sliding frame 44 and the detection roller 46 to reset together. This process is repeated, and the inner contact surface of the joint ring 0 repeatedly presses the detection roller 46, causing the detection roller 46 to move back and forth. In this way, the motor 41 drives the rotating frame 42, the sliding frame 44, and the detection roller 46 to rotate around the inner side of the joint ring 0. Under the action of the inner contact surface of the joint ring 0 and the compression spring 45, the detection roller 46 always remains in contact with the inner contact surface of the joint ring 0 and rotates accordingly, thereby simulating the actual state of the robot joint during operation. As a result, the operator can perform fatigue testing on the joint ring 0 by observing the changes in the joint ring 0.After the test, the staff turns off the motor 41. Simultaneously, the electric slide rail 13 drives the electric slider 14, which in turn moves the fixed plate 15 and the testing mechanism upwards to reset. The ball bearing 43 no longer presses against the positioning ring 22. The tension spring 23 resets, causing the positioning ring 22 and the compression frame 36 to reset upwards. The two protrusions 361 press against the two spiral grooves 341, causing the rotating shaft 34 and the rotating plate 35 to rotate in the opposite direction and reset. The arc-shaped groove 351 pushes the three sliding rods 33, causing the three clamping blocks 31 and the three rubber blocks 32 to reset and no longer clamp the joint ring 0. Finally, the staff removes the tested joint ring 0.

[0059] Example 2: Based on Example 1, such as Figure 2 , Figure 3 and Figures 12-18 As shown, it also includes a strength mechanism located between the fixed plate 15 and the rotating frame 42, used to intermittently increase the air pressure in the cavity of the rotating frame 42, thereby causing the detection roller 46 to intermittently apply higher pressure to the inner contact surface of the joint ring 0. The strength mechanism includes: a limiting frame 51 bolted to the bottom of the fixed plate 15 and having a ring of undulating grooves 511 on its outer side; piston cylinders 52 bolted to the top two sides of the rotating frame 42, each piston cylinder 52 having two right-angle grooves 521 symmetrically arranged on its upper part and communicating with the outside; two piston rods 53 slidably connected to the bottom of the two piston cylinders 52; two rollers 54 rotatably connected to the top of the two piston rods 53, with the ends of the two rollers 54 close to each other located on both sides of the undulating grooves 511; and a pressure application assembly located between the rotating frame 42 and the piston cylinders 52.

[0060] The undulating groove 511 is formed by four flat grooves and four inclined grooves that are connected in an alternating manner. The roller can move up and down in a reciprocating motion while revolving, thanks to the connection between the flat grooves and inclined grooves of the undulating groove 511.

[0061] The pressure application assembly includes: two one-way valves 551 and two one-way valves 552 respectively located on four right-angle slots 521, and one one-way valve 551 and one one-way valve 552 on each piston cylinder 52; two pressure airbags 553 are installed inside the rotating frame 42, and both pressure airbags 553 are connected to the cavity inside the rotating frame 42. The pressure airbags 553 are used to apply air pressure to the cavity inside the rotating frame 42; two three-way pipes 554 are connected between the two one-way valves 552 and the two pressure airbags 553 on both sides.

[0062] Initially, solenoid valve 421 is closed. While detecting the joint ring 0, rotating frame 42 rotates, causing the strength mechanism (excluding limit frame 51) and pressure application components to revolve together. As roller 54 revolves, it generates a reciprocating motion due to the connection between the flat and inclined grooves of undulating groove 511, which in turn causes piston rod 53 to intermittently reciprocate. When piston rod 53 moves downwards, it draws external air into piston cylinder 52 through one-way valve 551. Subsequently, when piston rod 53 moves upwards, it fills the pressure bladder 553 with the air drawn into piston cylinder 52 through one-way valve 552 and three-way pipe 554. Since pressure bladder 553 is connected to the cavity inside rotating frame 42, the elasticity of pressure bladder 553 causes rotating frame 42 to... The air pressure in the cavity and the pressure bladder 553 increases synchronously and steadily, thereby causing the extrusion frame 36 and the detection roller 46 to apply pressure to the inner contact surface of the joint ring 0. In this way, the piston rod 53 moves up and down reciprocally, intermittently filling the pressure bladder 553 with external air through the three-way pipe 554 via the one-way valve 551, the two-way valve 552 and the piston cylinder 52. This process causes the detection roller 46 to gradually apply greater pressure to the inner contact surface of the joint ring 0, simulating the fatigue resistance of the joint ring 0 under different operating pressure conditions, making the detection more thorough and improving the detection effect of the joint ring 0. After the detection is completed, the operator needs to open the solenoid valve 421 to balance the air pressure in the cavity of the rotating frame 42 and the pressure bladder 553 with the outside air, and then close the solenoid valve 421.

[0063] Example 3: Based on Example 2, such as Figure 2 , Figure 3 and Figures 17-19 As shown, it also includes a friction mechanism disposed between the rotating roller, the sliding frame 44, the piston cylinder 52 and the piston rod 53, used to limit the rotation of the detection roller 46 under stable pressure, thereby detecting the wear resistance of the joint ring 0 under different pressures. The friction mechanism includes: a plurality of toothed posts 61 respectively welded to the top of each rotating roller; a plurality of locking rods 62 slidably connected to the top of each sliding frame 44, the locking rods 62 being located directly above the plurality of toothed posts 61; compression springs 63 respectively connected between the plurality of locking rods 62 and the plurality of sliding frames 44; a plurality of ball bearings 64 embedded in the top of each locking rod 62; a compression ring 65 slidably connected between the outer sides of the two piston cylinders 52 and whose bottom surface contacts each ball bearing 64; and four push-pull rods 66 respectively welded to the top sides of the two piston rods 53, the bottom of the push-pull rods 66 being slidably connected to the compression rings 65.

[0064] Each locking bar 62 has a slot at its bottom that is the same shape as the toothed post 61. The slot of the locking bar 62 can lock the toothed post 61 so that the detection roller 46 cannot rotate.

[0065] As piston rod 53 moves downward, piston cylinder 52 is drawing in external air. This indicates that no gas is entering the cavity of rotating frame 42 or the pressure bladder 553 at this time, and the air pressure in both is stable. Simultaneously, the downward movement of piston rod 53 drives push-pull rod 66 downward. After moving downward a certain distance, push-pull rod 66 drives compression ring 65 downward. The downward movement of compression ring 65 compresses clamp rod 62, causing compression spring 63 to be compressed. Subsequently, piston rod 53 drives push-pull rod 66 upward, and compression spring 63 returns to its original position, causing clamp rod 62 to push compression ring 65 upward together. Thus, piston rod 53... The reciprocating motion of the push-pull rod 66 drives the compression ring 65 to move intermittently up and down. In turn, the compression spring 63 causes the clamping rod 62 to move up and down once during each period of stable air pressure within the cavity of the rotating frame 42 and the pressure airbag 553. At the same time, the reciprocating motion of the clamping rod 62 can temporarily clamp the toothed column 61, preventing the detection roller 46 from rotating for a period of time under stable pressure and thus rubbing against the inner contact surface of the joint ring 0. This process effectively simulates the wear resistance of the robot joint under different operating pressure conditions, making the detection more comprehensive and realistic, and further enhancing the accuracy and effect of the joint ring 0 detection.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A robot joint component strength detection device, characterized by: include: An outer frame with an entrance / exit (11) is provided; A support plate (12) with three evenly spaced grooves (121) is fixed inside the outer frame (11); The joint ring (0) is placed on the support plate (12); An electric slide rail (13) is installed on the inner wall of one side of the outer frame (11), and an electric slider (14) is slidably connected to the electric slide rail (13). The fixed plate (15) is fixed to the electric slider (14); The positioning component is located on the support plate (12); A clamping mechanism is located between the support plate (12) and the positioning component; The testing facility is located on a fixed plate (15); The positioning assembly includes: three limiting rods (21) fixed to the bottom of the support plate (12); a positioning ring (22) slidably connected between the three limiting rods (21) and extending out of the support plate (12), the upper outer part of the positioning ring (22) contacting the lower inner contact surface of the joint ring (0); and three tension springs (23) respectively connected between the three limiting rods (21) and the lower part of the positioning ring (22). The clamping mechanism includes: three clamping blocks (31) that are slidably connected to three sliding grooves (121) and evenly distributed around the joint ring (0); three rubber blocks (32) that are respectively located on the sides of the three clamping blocks (31) that are close to each other; three sliding rods (33) that are respectively fixed to the bottom of the three clamping blocks (31) and slidably connected to the bottom of the support plate (12); a rotating shaft (34) that is rotatably connected to the bottom of the outer frame (11) and has two spiral grooves (341) on the upper part; a rotating plate (35) that is fixed to the middle of the rotating shaft (34) and has three arc grooves (351), and the ends of the three sliding rods (33) that are close to each other are slidably connected to the three arc grooves (351); a pressing frame (36) that is fixed to the middle of the positioning ring (22) and has two protrusions (361) symmetrically arranged on the inner side, and the two protrusions (361) are slidably connected to the two spiral grooves (341) respectively; The detection mechanism includes: a motor (41) mounted on a fixed plate (15), the bottom end of the output shaft of the motor (41) passing through the fixed plate (15); a rotating frame (42) fixed to the bottom end of the output shaft of the motor (41); a plurality of ball bearings (43) embedded in the bottom surface of the rotating frame (42) and a plurality of sliding frames (44) slidably connected to the outside of the rotating frame (42), the plurality of sliding frames (44) and the rotating frame (42) forming an independent cavity based on the inside of the rotating frame (42); a solenoid valve (421) mounted on one side of the top of the rotating frame (42) and communicating with the cavity inside the rotating frame (42); a plurality of compression springs (45) respectively connected between each sliding frame (44) and the rotating frame (42); and a plurality of detection rollers (46) rotatably connected to the opposite side of the sliding frames (44).

2. The robot joint component strength detection apparatus according to claim 1, characterized by: It also includes a strength mechanism located between the fixed plate (15) and the rotating frame (42), the strength mechanism including: a limiting frame (51) fixed to the bottom of the fixed plate (15) and having a ring of undulating grooves (511) on the outside; piston cylinders (52) fixed to the top two sides of the rotating frame (42), each piston cylinder (52) having two right-angle grooves (521) symmetrically opened on the upper part of each piston cylinder (52) communicating with the outside; two piston rods (53) slidably connected to the bottom of the two piston cylinders (52); two rollers (54) rotatably connected to the top of the two piston rods (53), the ends of the two rollers (54) being close to each other being located on both sides of the undulating grooves (511); and a pressure application component located between the rotating frame (42) and the piston cylinders (52).

3. The robot joint component strength testing device according to claim 2, characterized in that: The undulating groove (511) is formed by four horizontal grooves and four inclined grooves intersecting and connecting.

4. The robot joint component strength testing device according to claim 2, characterized in that: The pressure application assembly includes: two one-way valves (551) and two one-way valves (552) respectively located on four right-angle slots (521), and each piston cylinder (52) has one one-way valve (551) and one one-way valve (552); two pressure airbags (553) are installed in the rotating frame (42), and both pressure airbags (553) are connected to the cavity in the rotating frame (42); two three-way pipes (554) are connected between the two one-way valves (552) and the two pressure airbags (553).

5. The robot joint component strength testing device according to claim 4, characterized in that: It also includes a friction mechanism disposed between the rotating roller, the sliding frame (44), the piston cylinder (52) and the piston rod (53). The friction mechanism includes: a plurality of toothed posts (61) respectively fixed to the top of each rotating roller; a plurality of locking rods (62) slidably connected to the top of each sliding frame (44), with the locking rods (62) all located directly above the plurality of toothed posts (61); compression springs (63) respectively connected between the plurality of locking rods (62) and the plurality of sliding frames (44); a plurality of ball bearings (64) embedded in the top of each locking rod (62); a compression ring (65) slidably connected between the outer sides of the two piston cylinders (52) and whose bottom surface contacts each ball bearing (64); and four push-pull rods (66) respectively fixed to the top sides of the two piston rods (53), with the bottom of each push-pull rod (66) slidably connected to the compression ring (65).

6. The robot joint component strength testing device according to claim 5, characterized in that: Each lever (62) has a groove at its bottom that is the same shape as the toothed post (61).

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