Device and method for detecting anti-fatigue performance of spiral bevel gear

Abstract

The invention relates to the technical field of spiral bevel gear anti-fatigue detection, and discloses a spiral bevel gear anti-fatigue performance detection device and a spiral bevel gear anti-fatigue performance detection method. The top of a rotary drum extends out of a detection table and then is sleeved with a to-be-detected spiral bevel gear; clamping jaw assemblies are symmetrically arranged on the upper side in the rotary drum, a jacking assembly which is driven by an electric telescopic cylinder to move up and down is arranged on the lower side in the rotary drum, and the bottoms of the clamping jaw assemblies are supported on the surface of the upper end of the jacking assembly. According to the invention, the spiral bevel gear to be detected can be rapidly clamped and disassembled; after the jacking assembly drives the clamping jaw assembly to clamp and fix the to-be-detected spiral bevel gear at the top of the rotating drum, the jacking assembly drives the lifting seat to move downwards through the rack and gear mechanism, so that a driven gear on the lifting seat is engaged with the upper end of the to-be-detected spiral bevel gear. And then the driving assembly drives the to-be-detected spiral bevel gear through the rotary drum to transmit the driven gear so as to simulate the working state of the to-be-detected spiral bevel gear.

Description

Technical Field

[0001] The invention relates to the technical field of spiral bevel gear anti-fatigue detection, and in particular to a spiral bevel gear anti-fatigue performance detection device and method. Background Art

[0002] The quality of the gear surface has an important influence on its anti-fatigue performance, that is, the flatness of the gear surface is an important indicator of its anti-fatigue performance. Therefore, after the anti-fatigue test, the flatness detection of the gear surface is an important method for anti-fatigue performance detection. During the anti-fatigue test, it is necessary to simulate the working state of the spiral bevel gear to be detected and the gear meshing with it. However, the clamping and fixing operation of the spiral bevel gear to be detected is very cumbersome. After the spiral bevel gear to be detected is clamped and fixed, it must be meshed with another gear to simulate the working state of the rotation of the two. However, due to the meshing of the two, the disassembly of the spiral bevel gear to be detected is hindered after the anti-fatigue test is completed, which is not conducive to improving the efficiency of the anti-fatigue test. For this reason, we introduce a spiral bevel gear anti-fatigue performance detection device and method. Summary of the invention

[0003] The object of the present invention is to provide a device and method for detecting fatigue resistance of spiral bevel gears, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A spiral bevel gear anti-fatigue performance testing device comprises a testing platform, on which a rotating drum is vertically arranged, and the top of the rotating drum extends out of the testing platform and is sleeved with a spiral bevel gear to be tested;

[0006] A clamping claw assembly is symmetrically arranged on the upper side of the drum, and a lifting assembly driven by an electric telescopic cylinder to move up and down is arranged on the lower side of the drum, and the bottom of the clamping claw assembly is supported on the upper end surface of the lifting assembly;

[0007] A limit frame is provided on one side of the upper end of the detection platform, a lifting seat is slidably connected inside the limit frame, and the bottom of the lifting assembly is connected to the lifting seat by a rack and pinion mechanism;

[0008] After the electric telescopic cylinder drives the lifting assembly to move upward, the clamping claw assembly rotates and opens, and the top of the clamping claw assembly extends out of the side wall of the rotating drum and is pressed against the inner upper end surface of the spiral bevel gear to be tested, thereby pressing and fixing the spiral bevel gear to be tested;

[0009] At the same time, the lifting assembly drives the lifting seat to move downward through the rack and pinion mechanism, so that the driven gear on the lifting seat is engaged with the upper end of the spiral bevel gear to be tested;

[0010] The rotating drum is driven by the driving assembly to rotate, so that the rotating drum transmits the driven gear through the spiral bevel gear to be detected.

[0011] Preferably, a bottom limiting ring seat is fixedly sleeved on the upper part of the rotating drum, the bottom limiting ring seat is seated on the upper end surface of the detection platform, the bottom of the spiral bevel gear to be detected is seated on the upper end surface of the bottom limiting ring seat, and a snap-in protrusion is also provided on the upper side of the rotating drum, which is snapped into the keyway inside the spiral bevel gear to be detected.

[0012] Preferably, the upper side of the drum is symmetrically provided with slots, and the inner side of the slots is connected with a raised plate;

[0013] The clamping jaw assembly includes a rotating jaw movably connected between two corresponding groups of raised plates by a pin shaft, a pressing block provided on the outer side of the top of the rotating jaw, and a ball movably connected on the outer side of the bottom of the rotating jaw;

[0014] The lifting assembly includes a lifting plate slidably connected to the inner side of the lower part of the rotating drum, a lifting rod fixed at the middle part of the lower end of the lifting plate, a bracket fixed at the bottom of the detection table, and a lifting plate fixed after the bottom of the lifting rod extends out of the rotating drum;

[0015] The balls are supported on the upper surface of the lifting plate;

[0016] The electric telescopic cylinder is fixed at the bottom of the bracket, and the piston rod at the output end of the electric telescopic cylinder penetrates the bracket and is connected to the lower end of the lifting plate.

[0017] Preferably, a connecting tube is fixed to the outer side of the bottom of the rotating claw, and the ball is connected to the bottom of the connecting tube by a clamping flange ring seat.

[0018] Preferably, the upper end of the bottom of the rotating claw supports a lower pressing block, and semicircular limiting blocks are fixed in the middle of both sides of the lower pressing block, and the side edges of the semicircular limiting blocks are closely attached to the inner wall surface of the rotating drum;

[0019] The middle part of the upper end of the lower pressing block is connected with an end cover by a first return spring, and the end cover is fixed on the top of the rotating drum.

[0020] Preferably, the rack and pinion mechanism comprises a vertical rack fixed at the other end of the lifting plate, a winding gear movably connected to the bottom of the testing platform by a vertical plate, and a pull rope wound in an annular groove in the middle of the winding gear;

[0021] The winding gear is meshed with the outer side wall of the vertical rack;

[0022] The top of the pull rope extends into the limiting frame and is connected to the middle of the lower end of the lifting seat. The bottom of the lifting seat is also provided with a second return spring, which is sleeved on the outer side of the top of the pull rope.

[0023] Preferably, the driving assembly includes a motor fixed to the bottom of the testing platform and a driving gear and a driven outer gear ring arranged in a gear cavity inside the testing platform;

[0024] The output end of the motor is extended into the gear cavity and then connected to the middle of the driving gear. The driving gear is meshed with the driven outer gear ring, and the driven outer gear ring is sleeved and fixed on the outer side of the rotating drum.

[0025] Preferably, a protective inspection plate for protecting the gear cavity is provided on the lower side of the detection platform, and legs are provided at the four corners of the lower end of the detection platform. Two sets of upper and lower bearings are embedded in the top of the gear cavity, and the bearings are sleeved on the rotating drum.

[0026] The present invention also provides a detection method for a spiral bevel gear anti-fatigue performance detection device, which specifically comprises the following steps:

[0027] S1, the spiral bevel gear to be tested is sleeved on the top of the drum;

[0028] S2, the electric telescopic cylinder drives the lifting assembly to move upward, so that after the clamping claw assembly rotates, the top of the clamping claw assembly extends out of the side wall of the rotating drum and presses on the inner upper end surface of the spiral bevel gear to be tested, thereby pressing and fixing the spiral bevel gear to be tested;

[0029] S3. At the same time, the lifting assembly drives the lifting seat to move downward through the rack and pinion mechanism, so that the driven gear on the lifting seat is engaged with the upper end of the spiral bevel gear to be tested;

[0030] S4. The driving assembly drives the drum to rotate, so that the drum transmits the power to the driven gear through the spiral bevel gear to be detected.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can realize the rapid clamping and disassembly of the spiral bevel gear to be tested through the arrangement of the jacking assembly and the clamping claw assembly, which is beneficial to improving the efficiency of the fatigue resistance testing of the spiral bevel gear; after the jacking assembly drives the clamping claw assembly to clamp and fix the spiral bevel gear to be tested on the top of the rotating drum, the jacking assembly drives the lifting seat to move downward through the rack and pinion mechanism, so that the driven gear on the lifting seat engages with the upper end of the spiral bevel gear to be tested, and then the driving assembly drives the spiral bevel gear to be tested through the rotating drum to transmit the driven gear to simulate the working state of the spiral bevel gear to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention in the initial state;

[0033] Figure 2 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0034] Figure 3 For the present invention Figure 1 A schematic diagram of the cross-sectional structure of the middle part;

[0035] Figure 4 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0036] Figure 5 It is a schematic diagram of the three-dimensional structure of the spiral bevel gear to be tested when the driven gear is driven by the present invention;

[0037] Figure 6 For the present invention Figure 5 Schematic diagram of the cross-section structure at CC in the middle;

[0038] Figure 7 It is a schematic diagram of the three-dimensional structure of the connection between the lifting plate, the rotating claw and the lower pressing block of the present invention;

[0039] Figure 8 It is a schematic diagram of the three-dimensional structure of the connection between the pressing block, the ball and the rotating claw of the present invention;

[0040] Fig. 9 For the present invention Figure 5 Schematic diagram of the three-dimensional structure from another perspective;

[0041] Fig.10 For the present invention Fig. 9 Schematic diagram of the side structure.

[0042] In the figure: 1. test table; 2. protective inspection plate; 3. vertical plate; 4. winding gear; 5. vertical rack; 6. lifting plate; 7. bracket; 8. electric telescopic cylinder; 9. motor; 10. outrigger; 11. bottom limit ring seat; 12. driven gear; 13. limit frame; 14. clamping flange ring seat; 15. second reset spring; 16. lifting seat; 17. rotating drum; 18. end cover; 19. clamping protrusion; 20. clamping block; 21. rotating claw; 22. slot; 23. lifting rod; 24. driven outer gear ring; 25. driving gear; 26. bearing; 27. lifting plate; 28. pin; 29. ​​ball; 30. lower pressure block; 31. raised plate; 32. first reset spring; 33. spiral bevel gear to be tested; 34. pull rope; 35. semicircular limit block; 36. connecting cylinder. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Example:

[0045] See also Figure 1-10 , the present invention provides a technical solution:

[0046] A device for testing the fatigue resistance of spiral bevel gears comprises a testing platform 1, on which a rotating drum 17 is vertically arranged, a protective inspection plate 2 for protecting a gear cavity is arranged on the lower side of the testing platform 1, legs 10 are arranged at the four corners of the lower end of the testing platform 1, and two sets of upper and lower bearings 26 are embedded in the top of the gear cavity, and the bearings 26 are sleeved on the rotating drum 17.

[0047] The arrangement of the upper and lower sets of bearings 26 makes the rotation of the drum 17 smoother and more stable.

[0048] The driving assembly includes a motor 9 fixed to the bottom of the test bench 1 and a driving gear 25 and a driven outer gear ring 24 arranged in a gear cavity inside the test bench 1;

[0049] The output end of the motor 9 extends into the gear cavity and is connected to the middle of the driving gear 25 . The driving gear 25 is meshed with the driven outer gear ring 24 , and the driven outer gear ring 24 is sleeved and fixed on the outer side of the rotating drum 17 .

[0050] The top of the rotating drum 17 extends out of the testing platform 1 and is sleeved with the spiral bevel gear 33 to be tested;

[0051] A bottom limiting ring seat 11 is sleeved and fixed on the upper part of the rotating drum 17, and the bottom limiting ring seat 11 is located on the upper end surface of the detection platform 1. The bottom of the spiral bevel gear 33 to be detected is located on the upper end surface of the bottom limiting ring seat 11. A clamping protrusion 19 is also provided on the upper side of the rotating drum 17, and the clamping protrusion 19 is clamped into the keyway inside the spiral bevel gear 33 to be detected.

[0052] Such an arrangement enables the spiral bevel gear 33 to be accurately sleeved on the top of the rotating drum 17, and when the rotating drum 17 rotates, the spiral bevel gear 33 to be synchronously driven to rotate.

[0053] The motor 9 is controlled by a PLC, and the model of the motor 9 is a Mitsubishi HC-SF202B motor, a Mitsubishi HG-SR702B motor, a Mitsubishi HK-KT7M3UWBJ motor, or other models that meet the use requirements.

[0054] After the spiral bevel gear 33 to be detected is fixed on the top of the drum 17, the motor 9 starts to work and drives the driven outer gear ring 24 to rotate through the driving gear 25, so that the driven outer gear ring 24 drives the drum 17 to rotate, so that the drum 17 transmits the driven gear 12 through the spiral bevel gear 33 to be detected to simulate the working state of the spiral bevel gear 33 to be detected.

[0055] A clamping claw assembly is symmetrically arranged on the upper side of the rotating drum 17, and a lifting assembly driven by an electric telescopic cylinder 8 to move up and down is arranged on the lower side of the rotating drum 17, and the bottom of the clamping claw assembly is supported on the upper end surface of the lifting assembly;

[0056] The upper side of the drum 17 is symmetrically provided with slots 22, and the inner side of the slots 22 is connected with a raised plate 31;

[0057] The clamping claw assembly includes a rotating claw 21 movably connected between two corresponding groups of raised plates 31 by a pin 28, a pressing block 20 provided on the outer side of the top of the rotating claw 21, and a ball 29 movably connected to the outer side of the bottom of the rotating claw 21;

[0058] The clamping block 20 is made of rubber material. After the top of the rotating claw 21 rotates around the pin shaft 28 as the center and extends out of the rotating drum 17 through the slot 22, the clamping block 20 is pressed against the inner upper end surface of the spiral bevel gear 33 to be detected, thereby clamping and fixing the spiral bevel gear 33 to be detected.

[0059] The lifting assembly includes a lifting plate 27 slidably connected to the inner side of the lower part of the rotating drum 17, a lifting rod 23 fixed at the middle part of the lower end of the lifting plate 27, a bracket 7 fixed at the bottom of the detection platform 1, and a lifting plate 6 fixed after the bottom of the lifting rod 23 extends out of the rotating drum 17;

[0060] The electric telescopic cylinder 8 is fixed at the bottom of the bracket 7 , and the piston rod at the output end of the electric telescopic cylinder 8 passes through the bracket 7 and is connected to the lower end of the lifting plate 6 .

[0061] The electric telescopic cylinder 8 is controlled by PLC. The electric telescopic cylinder 8 adopts the Naifet servo electric cylinder series, the German FESTO servo electric cylinder series, the Japanese SMC servo electric cylinder series or other models that meet the use requirements.

[0062] In the initial state, the piston rod of the electric telescopic cylinder 8 retracts, causing the lifting plate 6 and the lifting rod 23 to descend. At this time, the lifting plate 27 is driven by the lifting rod 23 to descend along the inside of the rotating drum 17, causing the rotating claw 21 to rotate around the pin 28 as the center of the circle until the top of the rotating claw 21 retracts to the inside of the slot 22 (such as Figure 1 , 2 , 3 and 4);

[0063] In this way, the top of the rotating claw 21 no longer extends out of the rotating drum 17 via the slot 22 , thereby not hindering the spiral bevel gear 33 to be detected from being sleeved on the top of the rotating drum 17 .

[0064] The bottom upper end of the rotating claw 21 supports a lower pressing block 30, and semicircular limiting blocks 35 are fixed in the middle of both sides of the lower pressing block 30, and the side edges of the semicircular limiting blocks 35 are closely attached to the inner wall surface of the rotating drum 17;

[0065] The middle part of the upper end of the lower pressing block 30 is connected to the end cover 18 by a first return spring 32 , and the end cover 18 is fixed to the top of the rotating drum 17 .

[0066] Under the elastic force of the first return spring 32 on the lower pressing block 30, the lower pressing block 30 is always pressed on the upper end of the bottom of the rotating claw 21, so that when the lifting plate 27 is driven by the lifting rod 23 to descend along the inside of the rotating drum 17, the rotating claw 21 rotates around the pin shaft 28 as the center of the circle until the top of the rotating claw 21 retracts into the inside of the slot 22;

[0067] The piston rod of the electric telescopic cylinder 8 is extended, so that the lifting plate 6 drives the lifting rod 23 to rise in height. The lifting plate 27 rises along the inside of the rotating drum 17 under the drive of the lifting rod 23. The lifting plate 27 pushes the bottom of the rotating claw 21. The rotating claw 21 overcomes the pressure of the lower pressure block 30 and rotates around the pin 28 as the center until the top of the rotating claw 21 extends out of the rotating drum 17 through the slot 22. The clamping block 20 on the top of the rotating claw 21 is pressed against the inner upper end surface of the spiral bevel gear 33 to be detected, thereby achieving the clamping and fixation of the spiral bevel gear 33 to be detected.

[0068] When the drum 17 rotates, the lifting plate 27 and the lifting rod 23 are stationary, that is, the lifting plate 27 and the lifting rod 23 do not rotate. At the same time, the clamping jaw assembly and the spiral bevel gear 33 to be detected will also rotate under the drive of the drum 17, that is, the clamping jaw assembly, the spiral bevel gear 33 to be detected and the drum 17 are relatively stationary. At this time, the ball 29 is supported on the upper end surface of the lifting plate 27. In this way, when the clamping jaw assembly, the spiral bevel gear 33 to be detected and the drum 17 rotate synchronously, the contact area between the bottom of the clamping jaw assembly and the upper end surface of the lifting plate 27 is reduced, thereby avoiding serious wear on the bottom of the clamping jaw assembly.

[0069] And because a connecting tube 36 is fixed to the outer side of the bottom of the rotating claw 21, the ball 29 is connected to the bottom of the connecting tube 36 by a clamping flange ring seat 14, so that the ball 29 can roll on the bottom of the rotating claw 21, thereby further reducing the wear on the bottom of the clamping jaw assembly when the clamping jaw assembly, the spiral bevel gear 33 to be detected and the rotating drum 17 rotate synchronously.

[0070] Since the clamping jaw assembly and the spiral bevel gear 33 to be detected will also rotate under the drive of the rotating drum 17, that is, the clamping jaw assembly, the spiral bevel gear 33 to be detected and the rotating drum 17 are relatively stationary, when the rotating drum 17 rotates, the clamping jaw assembly thereon can still clamp and fix the spiral bevel gear 33 to be detected.

[0071] A limit frame 13 is provided on one side of the upper end of the testing platform 1, a lifting seat 16 is slidably connected inside the limit frame 13, and the bottom of the lifting assembly is connected to the lifting seat 16 by a rack and pinion mechanism;

[0072] After the electric telescopic cylinder 8 drives the lifting assembly to move upward, the clamping claw assembly rotates and opens, and the top of the clamping claw assembly extends out of the side wall of the rotating drum 17 and is pressed against the inner upper end surface of the spiral bevel gear 33 to be tested, thereby pressing and fixing the spiral bevel gear 33 to be tested;

[0073] At the same time, the lifting assembly drives the lifting seat 16 to move downward through the rack and pinion mechanism, so that the driven gear 12 on the lifting seat 16 is engaged with the upper end of the spiral bevel gear 33 to be detected;

[0074] The drum 17 is driven by the driving assembly to rotate, so that the drum 17 transmits the drive gear 12 through the spiral bevel gear 33 to be detected.

[0075] The driven gear 12 is movably connected to the lifting seat 16 via a gear shaft.

[0076] The rack and pinion mechanism comprises a vertical rack 5 fixed at the other end of the lifting plate 6, a winding gear 4 movably connected to the bottom of the testing platform 1 by a vertical plate 3, and a pull rope 34 wound in an annular groove in the middle of the winding gear 4;

[0077] The winding gear 4 is meshed with the outer side wall of the vertical rack 5;

[0078] The top of the pull rope 34 extends into the limiting frame 13 and is connected to the middle of the lower end of the lifting seat 16 . The bottom of the lifting seat 16 is also provided with a second return spring 15 , which is sleeved on the outer side of the top of the pull rope 34 .

[0079] In the initial state, due to the retraction of the piston rod of the electric telescopic cylinder 8, the lifting plate 6 and the lifting rod 23 are lowered. At this time, the vertical rack 5 at the other end of the lifting plate 6 will drive the winding gear 4 to rotate counterclockwise, so that the winding gear 4 can release the pull rope 34.

[0080] Then, under the elastic force of the second return spring 15 on the lifting seat 16, the lifting seat 16 moves up to the highest position along the limit frame 13, so that the driven gear 12 on the lifting seat 16 is farthest from the upper end surface of the detection platform 1 (such as Figure 1 As shown), the driven gear 12 will not hinder the spiral bevel gear 33 to be detected from being sleeved on the top of the drum 17.

[0081] The present invention also provides a detection method for a spiral bevel gear anti-fatigue performance detection device, which specifically comprises the following steps:

[0082] S1, the spiral bevel gear 33 to be detected is sleeved on the top of the drum 17;

[0083] S2, the electric telescopic cylinder 8 drives the lifting assembly to move upward, so that after the clamping claw assembly rotates, the top of the clamping claw assembly extends out of the side wall of the rotating drum 17 and presses on the inner upper end surface of the spiral bevel gear 33 to be tested, thereby pressing and fixing the spiral bevel gear 33 to be tested;

[0084] S3. At the same time, the lifting assembly drives the lifting seat 16 to move downward through the rack and pinion mechanism, so that the driven gear 12 on the lifting seat 16 is engaged with the upper end of the spiral bevel gear 33 to be detected;

[0085] S4. The driving assembly drives the drum 17 to rotate, so that the drum 17 transmits the power to the driven gear 12 through the spiral bevel gear 33 to be detected.

[0086] Specifically, when in use, while the spiral bevel gear 33 to be detected is clamped and fixed, the driven gear 12 is meshed with the upper end of the spiral bevel gear 33 to be detected, and then the motor 9 drives the rotating drum 17 to rotate, so that the rotating drum 17 transmits the driven gear 12 through the spiral bevel gear 33 to be detected, simulating the working state of the spiral bevel gear 33 to be detected;

[0087] After the preset time is reached, the motor 9 stops working;

[0088] Then, the micrometer gear probe is used to detect the flatness of the tooth surface of the spiral bevel gear 33 to be inspected;

[0089] The micrometer gear probe adopts the 124 series mechanical type or 324 series digital type of Mitutoyo brand of Japan or the 297-12-410 electronic gear micrometer of Qingliang brand or other models that meet the use requirements;

[0090] After the micrometer gear probe detects the flatness data of the tooth surface of the spiral bevel gear 33 to be detected, the piston rod of the electric telescopic cylinder 8 retracts, so that the lifting plate 6 and the lifting rod 23 are lowered. At this time, the lifting plate 27 is driven by the lifting rod 23 to descend along the inside of the rotating drum 17, so that the rotating claw 21 rotates around the pin shaft 28 as the center of the circle until the top of the rotating claw 21 retracts into the inside of the slot 22;

[0091] At the same time, the piston rod of the electric telescopic cylinder 8 retracts, causing the lifting plate 6 and the lifting rod 23 to drop in height. At this time, the vertical rack 5 at the other end of the lifting plate 6 will drive the winding gear 4 to rotate counterclockwise, causing the winding gear 4 to release the pull rope 34.

[0092] Then, under the elastic force of the second return spring 15 on the lifting seat 16, the lifting seat 16 moves up to the highest position along the limiting frame 13, so that the driven gear 12 on the lifting seat 16 is farthest from the upper end surface of the detection platform 1;

[0093] Finally, remove the spiral bevel gear 33 to be tested.

[0094] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spiral bevel gear anti-fatigue performance testing device, comprising a testing platform, characterized in that: A rotating drum is vertically arranged on the testing platform, and the top of the rotating drum extends out of the testing platform and is sleeved with the spiral bevel gear to be tested; A clamping claw assembly is symmetrically arranged on the upper side of the drum, and a lifting assembly driven by an electric telescopic cylinder to move up and down is arranged on the lower side of the drum, and the bottom of the clamping claw assembly is supported on the upper end surface of the lifting assembly; A limit frame is provided on one side of the upper end of the detection platform, a lifting seat is slidably connected inside the limit frame, and the bottom of the lifting assembly is connected to the lifting seat by a rack and pinion mechanism; After the electric telescopic cylinder drives the lifting assembly to move upward, the clamping claw assembly rotates and opens, and the top of the clamping claw assembly extends out of the side wall of the rotating drum and is pressed against the inner upper end surface of the spiral bevel gear to be tested, thereby pressing and fixing the spiral bevel gear to be tested; At the same time, the lifting assembly drives the lifting seat to move downward through the rack and pinion mechanism, so that the driven gear on the lifting seat is engaged with the upper end of the spiral bevel gear to be tested; The rotating drum is driven by the driving assembly to rotate, so that the rotating drum transmits the driven gear through the spiral bevel gear to be detected.

2. A spiral bevel gear anti-fatigue performance detection device according to claim 1, characterized in that: A bottom limiting ring seat is fixedly sleeved on the upper part of the rotating drum, and the bottom limiting ring seat is seated on the upper end surface of the detection platform. The bottom of the spiral bevel gear to be detected is seated on the upper end surface of the bottom limiting ring seat. A clamping protrusion is also provided on the upper side of the rotating drum, and the clamping protrusion is clamped into the keyway inside the spiral bevel gear to be detected.

3. The device for detecting fatigue resistance of spiral bevel gears according to claim 1, characterized in that: The upper side of the drum is symmetrically provided with slots, and the inner side of the slots is connected with a raised plate; The clamping jaw assembly includes a rotating jaw movably connected between two corresponding groups of raised plates by a pin shaft, a pressing block provided on the outer side of the top of the rotating jaw, and a ball movably connected on the outer side of the bottom of the rotating jaw; The lifting assembly includes a lifting plate slidably connected to the inner side of the lower part of the rotating drum, a lifting rod fixed at the middle part of the lower end of the lifting plate, a bracket fixed at the bottom of the detection table, and a lifting plate fixed after the bottom of the lifting rod extends out of the rotating drum; The balls are supported on the upper surface of the lifting plate; The electric telescopic cylinder is fixed at the bottom of the bracket, and the piston rod at the output end of the electric telescopic cylinder penetrates the bracket and is connected to the lower end of the lifting plate.

4. A spiral bevel gear anti-fatigue performance detection device according to claim 3, characterized in that: A connecting cylinder is fixed on the outer side of the bottom of the rotating claw, and the ball is connected to the bottom of the connecting cylinder by a clamping flange ring seat.

5. The spiral bevel gear anti-fatigue performance detection device according to claim 3, characterized in that: The bottom upper end of the rotating claw supports a lower pressing block, and semicircular limiting blocks are fixed in the middle of both sides of the lower pressing block, and the side edges of the semicircular limiting blocks are closely attached to the inner wall surface of the rotating drum; The middle part of the upper end of the lower pressing block is connected with an end cover by a first return spring, and the end cover is fixed on the top of the rotating drum.

6. The spiral bevel gear anti-fatigue performance detection device according to claim 3, characterized in that: The rack and pinion mechanism includes a vertical rack fixed at the other end of the lifting plate, a winding gear movably connected to the bottom of the testing platform by a vertical plate, and a pull rope wound in an annular groove in the middle of the winding gear; The winding gear is meshed with the outer side wall of the vertical rack; The top of the pull rope extends into the limiting frame and is connected to the middle of the lower end of the lifting seat. The bottom of the lifting seat is also provided with a second return spring, which is sleeved on the outer side of the top of the pull rope.

7. The device for detecting fatigue resistance of spiral bevel gears according to claim 1, characterized in that: The driving assembly includes a motor fixed to the bottom of the testing platform and a driving gear and a driven outer gear ring arranged in a gear cavity inside the testing platform; The output end of the motor is extended into the gear cavity and then connected to the middle of the driving gear. The driving gear is meshed with the driven outer gear ring, and the driven outer gear ring is sleeved and fixed on the outer side of the rotating drum.

8. The device for detecting fatigue resistance of spiral bevel gears according to claim 7, characterized in that: A protective inspection plate for protecting the gear cavity is provided on the lower side of the detection platform, and legs are provided at the four corners of the lower end of the detection platform. Two sets of upper and lower bearings are embedded in the top of the gear cavity, and the bearings are sleeved on the rotating drum.

9. A detection method based on the spiral bevel gear anti-fatigue performance detection device according to any one of claims 1 to 8, characterized in that: The specific steps include: S1, the spiral bevel gear to be tested is sleeved on the top of the drum; S2, the electric telescopic cylinder drives the lifting assembly to move upward, so that after the clamping claw assembly rotates, the top of the clamping claw assembly extends out of the side wall of the rotating drum and presses on the inner upper end surface of the spiral bevel gear to be tested, thereby pressing and fixing the spiral bevel gear to be tested; S3. At the same time, the lifting assembly drives the lifting seat to move downward through the rack and pinion mechanism, so that the driven gear on the lifting seat is engaged with the upper end of the spiral bevel gear to be tested; S4. The driving assembly drives the drum to rotate, so that the drum transmits the power to the driven gear through the spiral bevel gear to be detected.

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