Metal structural member fatigue damage detection device

Abstract

The utility model discloses a metal structural member fatigue damage detection device which comprises a center frame and a middle bottom frame, the middle bottom frame is installed at the center position of the top end of the center frame, a side base is installed at the top end of the center frame on one side of the middle bottom frame, and a mechanical arm is installed at the top end of the side base. A rotating disc is arranged at the top end of the center frame on one side of the manipulator, and an annular groove is formed in the top end of the center frame below the rotating disc. According to the utility model, not only are convenient reciprocating movement extrusion of the metal structural member and transverse movement adjustment of the detection position realized, the metal structural member can be conveniently and automatically taken for multi-position detection, and the detection device can be conveniently and rapidly rotated to replace the next group of metal structural member, but also the detection efficiency of the detection device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a fatigue damage detection device for metal structural parts. Background Art

[0002] Metal fatigue refers to a process in which metal parts of machinery, vehicles or aircraft slowly weaken under repeated stresses less than the actual stress required to destroy the material, and eventually break down under stresses much weaker than the fatigue limit. The cause of metal fatigue is closely related to the microstructure of the metal material. There are defects such as grain boundaries, twin boundaries, dislocations, and inclusions in metal crystals, which are all causes of metal fatigue. When the metal material is subjected to external loads, stress concentration occurs at the defects, which easily leads to the formation of cracks. As the load cycles, the cracks gradually expand and eventually lead to material fracture.

[0003] For example, a steel structure fatigue damage detection device disclosed in authorization announcement number CN220751595U includes a frame device for supporting, moving, and detecting fatigue damage of the steel structure, and also includes a power device installed at the bottom of the frame device for adsorbing and rotating the steel structure. A cleaning device for rotating and cleaning the surface of the steel structure is installed in the middle of the frame device. The power device includes two symmetrically arranged walking wheels, the surfaces of the walking rollers are evenly distributed with a plurality of magnetic strips, and a sprocket is installed behind each of the two walking spokes.

[0004] Although it realizes the setting of moving by rotating magnetic attraction, ensuring the overall automatic movement along the surface of the steel structure for detection, the setting of suction and dust removal with negative pressure suction increases the overall adsorption force on the surface of the steel structure, and the dust on the surface of the steel structure is cleaned by rotation, which increases the accuracy of fatigue damage detection of steel structures;

[0005] However, it does not solve the problem that the existing detection device is not conducive to convenient reciprocating movement and extrusion of metal structural parts, horizontal movement to adjust the detection position, automatic removal of metal components for multi-position detection, and rapid rotation of the detection device to replace the next group of metal structural parts, which greatly affects the detection efficiency of the detection device. Utility Model Content

[0006] The purpose of the present utility model is to provide a fatigue damage detection device for metal structural parts, so as to solve the problem proposed in the above background technology that the detection device is not convenient for convenient reciprocating movement to extrude metal structural parts, horizontal movement to adjust the detection position, is not conducive to automatic picking up metal components for multi-position detection, is not conducive to rapid rotation of the detection device to replace the next group of metal structural parts, and affects the detection efficiency of the detection device.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a fatigue damage detection device for metal structural parts, comprising a center frame and a middle frame, the middle frame being installed at the center position of the top end of the center frame, a side base being installed at the top end of the center frame on one side of the middle frame, a manipulator being installed at the top end of the side base, a rotating disk being provided at the top end of the center frame on one side of the manipulator, an annular groove being provided at the top end of the center frame below the rotating disk, a plurality of groups of limiting shafts being installed at equal intervals at the bottom end of the rotating disk above the annular groove, and the limiting shafts being slidably connected to the annular groove, six groups of placing frames being installed at equal intervals at the top end of the rotating disk, a bending frame being installed on the side wall of the middle frame on one side of the rotating disk, a longitudinal metal fatigue detector being installed on the side wall of the bending frame, a transverse metal fatigue detector being slidably installed on the side wall of the middle frame on one side of the longitudinal metal fatigue detector, an oblique metal fatigue detector being installed inside the middle frame on one side of the transverse metal fatigue detector, a left frame being installed on the side wall of the center frame, and a fixed frame being installed on the top end of the left frame.

[0008] Preferably, a support frame is movably installed at the bottom end of the fixing frame, and a limiting sleeve is symmetrically installed on the top end of the fixing frame above the support frame. Limiting rods are slidably installed inside the limiting sleeves, and the bottom ends of the limiting rods are connected to the supporting frame.

[0009] Preferably, a stepper motor is installed on the side wall of the support frame on one side of the limit rod, a main gear is installed on the output end of the stepper motor, and a support shaft is symmetrically and movably installed on the side wall of the support frame on one side of the stepper motor, and the support shaft extends to the outside of the support frame.

[0010] Preferably, the outer wall of the support shaft on one side of the main gear is provided with a secondary gear, and the secondary gears are all meshed with the main gear, the outer wall of the support shaft on one side of the secondary gear is provided with a semicircular gear, a fixing seat is installed on the outer wall of the support frame below the main gear, a pressure strip is slidably installed inside the fixing seat, a rack is installed on the top of the pressure strip, and the racks are all meshed with the semicircular gears, and the tooth length of the rack is equal to the annular tooth length of the semicircular gear.

[0011] Preferably, an upper cylinder is installed at the bottom end of the fixed frame above the support frame, and the output end of the upper cylinder is connected to the support frame. A lower cylinder is installed at the top end of the fixed frame below the upper cylinder, and a push block frame is installed at the output end of the lower cylinder.

[0012] Preferably, an annular gear disc is installed at the bottom end of the rotating disk, a right-angle motor is installed at the top end of the center frame on one side of the annular gear disc, a lower gear is installed at the output end of the right-angle motor, and the lower gear is meshed with the annular gear disc.

[0013] Preferably, a servo motor is installed at the top of the middle base frame below the bending frame, and a threaded sleeve is slidably installed at the top of the middle base frame on one side of the servo motor. The internal thread of the threaded sleeve is connected to a servo threaded rod, and the servo threaded rod extends to the outside of the threaded sleeve, and the servo threaded rod is connected to the output end of the servo motor.

[0014] Preferably, a remote controller is installed on the top of the left side frame on one side of the fixed frame, and the output end of the remote controller is electrically connected to the input end of the longitudinal metal fatigue detector, the transverse metal fatigue detector, the oblique metal fatigue detector, the manipulator, the stepper motor, the upper cylinder, the lower cylinder, the servo motor, and the right-angle motor.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the detection device not only realizes the convenient reciprocating movement and extrusion of metal structural parts, and the lateral movement and adjustment of the detection position, but also facilitates the automatic picking up of metal components for multi-position detection, and facilitates the rapid rotation of the detection device to replace the next group of metal structural parts, but also improves the detection efficiency of the detection device;

[0016] (1) The support frame is driven downward by the upper cylinder, and the support frame drives the limit rod to move downward. The limit sleeve supports the limit rod. The stepper motor drives the main gear to rotate. Under the meshing action of the main gear and the secondary gear, one set of secondary gears is driven to rotate clockwise, and the other set of secondary gears is driven to rotate counterclockwise. One set of secondary gears drives the semicircular gear to rotate clockwise through the support shaft, and the other set of secondary gears drives the semicircular gear to rotate counterclockwise through the support shaft. At this time, the outer teeth of one set of semicircular gears just contact the bottom of the rack. Under the meshing action of the semicircular gear and the rack, the rack is driven to move downward, and the rack drives the pressure strip to move downward, and the fixed seat The pressure bar is supported by sliding, and the pressure bar is lowered to contact and squeeze the metal structure inside the placement rack. Since the outer teeth of the semicircular gear just match the outer teeth of the rack, and the semicircular gear is a 120-degree sector gear, when one set of semicircular gears just disengages from the rack, the outer teeth of the other set of semicircular gears just contact the top outer teeth of the rack. At this time, the other set of semicircular gears drives the rack to move upward, and the rack drives the pressure bar to move upward. In this way, the pressure bar moves back and forth under the drive of the stepper motor, and the pressure bar moves back and forth to stamp the metal component. At this time, the metal structure inside the placement rack is deformed or cracked;

[0017] (2) The push block rack is driven upward by the lower cylinder to push the metal structure inside the placement rack out of the placement rack, and the manipulator is used to clamp and transport the pushed metal structure to the top of the middle bottom rack. The longitudinal metal fatigue detector performs X-ray penetration detection on the longitudinal cracks of the metal structure, the transverse metal fatigue detector performs X-ray penetration detection on the transverse cracks of the metal structure, and the oblique metal fatigue detector performs X-ray penetration detection on the oblique cracks of the metal structure. When the metal component inspection is completed, the manipulator grabs the metal component and transports it to the inside of the placement rack. The right-angle motor drives the lower gear to rotate, and the lower gear and the annular gear disc are engaged to drive the metal component. The annular gear disk rotates, and the annular gear disk drives the rotating disk to rotate, and the rotating disk drives the placement rack and the metal structure inside it to rotate synchronously. When the rotating disk rotates, the rotating disk drives the limit shaft to rotate synchronously. In this way, fatigue damage detection of the next group of metal structures is facilitated, and the metal structure fatigue damage detection device realizes convenient reciprocating movement and extrusion of metal structures, facilitates automatic removal of metal components for multi-position detection, and facilitates rapid rotation of the detection device to replace the next group of metal structures, shortens the switching time between each group of metal components, speeds up the detection frequency of the detection device, reduces the participation of personnel, and improves the detection efficiency of the detection device;

[0018] (3) The servo motor drives the servo threaded rod to rotate, and the threaded sleeve is driven to move under the cooperation of the threads of the threaded rod and the threaded sleeve. The threaded sleeve drives the lateral metal fatigue detector to move synchronously to facilitate lateral multi-position detection of metal structural parts, realizing the convenient lateral movement and adjustment of the detection position of the fatigue damage detection device of the metal structural parts, and facilitating the lateral multi-position movement of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the placement rack of the present utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the oblique metal fatigue detector of the present utility model;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the fixing frame of the present invention;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the semicircular gear of the present invention;

[0024] Figure 6 This is a schematic diagram of the front cross-sectional structure of the main gear of the present utility model;

[0025] Figure 7 This is a schematic diagram of the three-dimensional structure of the mid-frame of the present invention;

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the annular gear disc of the present invention;

[0027] Figure 9 This is a schematic diagram of the three-dimensional structure of the lower gear of the present invention.

[0028] In the figure: 1. Center frame; 2. Side base; 3. Manipulator; 4. Rotating disk; 5. Placement frame; 6. Middle bottom frame; 7. Bending frame; 8. Longitudinal metal fatigue tester; 9. Horizontal metal fatigue tester; 10. Oblique metal fatigue tester; 11. Left side frame; 12. Fixed frame; 13. Stepper motor; 14. Main gear; 15. Support shaft; 16. Secondary gear; 17. Rack; 18. Support frame; 19. Pressure strip; 20. Upper cylinder; 21. Lower cylinder; 22. Push block frame; 23. Annular gear disc; 24. Right angle motor; 25. Lower gear; 26. Servo motor; 27. Threaded rod; 28. Threaded sleeve frame; 29. ​​Remote controller; 30. Semicircular gear; 31. Limit rod; 32. Limit sleeve; 33. Fixed seat; 34. Limit shaft; 35. Annular groove. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-9 The present invention provides an embodiment of a fatigue damage detection device for a metal structural part, comprising a center frame 1 and a middle base frame 6, wherein the middle base frame 6 is installed at the center position of the top of the center frame 1, a side base 2 is installed at the top of the center frame 1 on one side of the middle base frame 6, a manipulator 3 is installed at the top of the side base 2, a rotating disk 4 is provided at the top of the center frame 1 on one side of the manipulator 3, an annular groove 35 is provided at the top of the center frame 1 below the rotating disk 4, and a plurality of groups of limiting shafts 34 with equal spacing are installed at the bottom of the rotating disk 4 above the annular groove 35, and the limiting shafts 34 are provided at the bottom of the rotating disk 4. Slidingly connected to the annular groove 35, six sets of placement racks 5 are installed at equal intervals on the top of the rotating disk 4. A curved rack 7 is installed on the side wall of the middle bottom rack 6 on one side of the rotating disk 4. A longitudinal metal fatigue detector 8 is installed on the side wall of the curved rack 7. A transverse metal fatigue detector 9 is slidably installed on the side wall of the middle bottom rack 6 on the side of the longitudinal metal fatigue detector 8. An oblique metal fatigue detector 10 is installed inside the middle bottom rack 6 on the side of the transverse metal fatigue detector 9. A left side rack 11 is installed on the side wall of the center rack 1, and a fixed rack 12 is installed on the top of the left side rack 11.

[0031] A support frame 18 is movably mounted on the bottom end of the fixed frame 12, and a limit sleeve 32 is symmetrically mounted on the top end of the fixed frame 12 above the support frame 18. A limit rod 31 is slidably mounted inside the limit sleeve 32, and the bottom end of the limit rod 31 is connected to the support frame 18. A stepper motor 13 is mounted on the side wall of the support frame 18 on one side of the limit rod 31. The stepper motor 13 plays a role of power drive, and a main gear 14 is mounted on the output end of the stepper motor 13. A support shaft 15 is symmetrically and movably mounted on the side wall of the support frame 18 on one side of the stepper motor 13, and the support shaft 15 extends to the outside of the support frame 18;

[0032] A secondary gear 16 is mounted on the outer wall of the support shaft 15 on one side of the main gear 14, and the secondary gears 16 are all meshed with the main gear 14. A semicircular gear 30 is mounted on the outer wall of the support shaft 15 on one side of the secondary gear 16. A fixing seat 33 is mounted on the outer wall of the support frame 18 below the main gear 14. A pressure strip 19 is slidably mounted inside the fixing seat 33. A rack 17 is mounted on the top of the pressure strip 19, and the rack 17 is meshed with the semicircular gear 30. The tooth length of the rack 17 is equal to the annular tooth length of the semicircular gear 30.

[0033] By operating the remote controller 29 to open the upper cylinder 20, under the support of the fixed frame 12, the upper cylinder 20 drives the support frame 18 to move downward, and the support frame 18 drives the limit rod 31 to move downward, and the limit sleeve 32 supports the limit rod 31 in a limited manner. By operating the remote controller 29 to open the stepper motor 13, under the support of the support frame 18, the stepper motor 13 drives the main gear 14 to rotate, and under the meshing action of the main gear 14 and the secondary gear 16, drives one group of secondary gears 16 to rotate clockwise, and the other group of secondary gears 16 to rotate counterclockwise. One group of secondary gears 16 drives the semicircular gear 30 to rotate clockwise through the support shaft 15, and the other group of secondary gears 16 drives the semicircular gear 30 to rotate counterclockwise through the support shaft 15. At this time, the outer teeth of one group of semicircular gears 30 are rigid. The rack 17 is in good contact with the bottom of the rack 17. Under the meshing action of the semicircular gear 30 and the rack 17, the rack 17 is driven to move downward, and the rack 17 drives the pressure strip 19 to move downward. The fixed seat 33 slides and supports the pressure strip 19, and the pressure strip 19 drops to contact and squeeze the metal structure inside the placement rack 5. Since the outer teeth of the semicircular gear 30 just match the outer teeth of the rack 17, the semicircular gear 30 is a 120-degree sector gear. When one set of semicircular gears 30 is just disengaged from the rack 17, the outer teeth of the other set of semicircular gears 30 just contact the top outer teeth of the rack 17. At this time, the other set of semicircular gears 30 drives the rack 17 to move upward, and the rack 17 drives the pressure strip 19 to move upward. In the same way, the pressure strip 1 is driven by the stepper motor 13. 9 moves back and forth, and the pressure strip 19 moves back and forth to stamp the metal component. At this time, the metal structure inside the placement rack 5 is deformed or cracked. The manipulator 3 is opened by operating the remote controller 29. Under the support of the side base 2, the manipulator 3 clamps and conveys the pushed metal structure to the top of the middle bottom frame 6. The longitudinal metal fatigue detector 8, the transverse metal fatigue detector 9, and the oblique metal fatigue detector 10 are opened by operating the remote controller 29. The bending frame 7 supports the longitudinal metal fatigue detector 8. The models of the longitudinal metal fatigue detector 8, the transverse metal fatigue detector 9, and the oblique metal fatigue detector 10 are the same type of model chips as the metal fatigue detector TSC-3m-12 of Beijing Jushixin Trading Co., Ltd., which are composed of longitudinal metal The fatigue detector 8 performs X-ray penetration detection on the longitudinal cracks of the metal structure, the transverse metal fatigue detector 9 performs X-ray penetration detection on the transverse cracks of the metal structure, and the oblique metal fatigue detector 10 performs X-ray penetration detection on the oblique cracks of the metal structure. X-rays will be scattered or refracted at the cracks, and the X-rays will eventually be received by the sensors inside the longitudinal metal fatigue detector 8, the transverse metal fatigue detector 9 and the oblique metal fatigue detector 10. The internal logic processor transmits the received information to the external Internet to facilitate the staff to estimate the fatigue damage of the metal structure and determine the location and size of the cracks. When the metal component inspection is completed, the remote controller 29 is operated to open the manipulator 3 again.The manipulator 3 grabs the metal component and transports it to the inside of the placement rack 5. The right-angle motor 24 is turned on by operating the remote controller 29. The center frame 1 supports the right-angle motor 24. The right-angle motor 24 drives the lower gear 25 to rotate. Under the meshing action of the lower gear 25 and the annular gear plate 23, the annular gear plate 23 is driven to rotate. The annular gear plate 23 drives the rotating disk 4 to rotate, and the rotating disk 4 drives the placement rack 5 and the metal structure inside it to rotate synchronously. When the rotating disk 4 rotates, the rotating disk 4 drives the limiting shaft 34 to rotate synchronously. The limiting shaft 34 slides inside the annular groove 35 for limiting support. In this way, it is convenient for the next group of metal structural parts to be fatigue damaged. The metal structural part fatigue damage detection device realizes the convenient reciprocating movement and extrusion of the metal structural parts, facilitates the automatic removal of metal components for multi-position detection, and facilitates the detection device to quickly rotate and replace the next group of metal structural parts, shortens the switching time between each group of metal components, speeds up the detection frequency of the detection device, reduces the participation of personnel, and improves the detection efficiency of the detection device.

[0034] An upper cylinder 20 is installed at the bottom end of the fixed frame 12 above the support frame 18, and the output end of the upper cylinder 20 is connected to the support frame 18. A lower cylinder 21 is installed at the top end of the fixed frame 12 below the upper cylinder 20, and a push block frame 22 is installed at the output end of the lower cylinder 21. An annular gear disk 23 is installed at the bottom end of the rotating disk 4, and a right-angle motor 24 is installed at the top end of the center frame 1 on one side of the annular gear disk 23. The right-angle motor 24 plays a role of power drive. A lower gear 25 is installed at the output end of the right-angle motor 24, and the lower gear 25 is meshed with the annular gear disk 23;

[0035] By operating the remote controller 29 to open the lower cylinder 21, under the support of the fixed frame 12, the lower cylinder 21 drives the block pusher 22 to move upward, and the block pusher 22 pushes the metal structure inside the placement rack 5 out of the placement rack 5;

[0036] A servo motor 26 is installed at the top of the middle bottom frame 6 below the bending frame 7. The servo motor 26 plays the role of power drive. A threaded sleeve 28 is slidably installed at the top of the middle bottom frame 6 on one side of the servo motor 26. The internal thread of the threaded sleeve 28 is connected to a servo threaded rod 27, and the servo threaded rod 27 extends to the outside of the threaded sleeve 28. The servo threaded rod 27 is connected to the output end of the servo motor 26;

[0037] A remote controller 29 is mounted on the top of the left frame 11 on one side of the fixed frame 12, and the output end of the remote controller 29 is electrically connected to the input ends of the longitudinal metal fatigue detector 8, the transverse metal fatigue detector 9, the oblique metal fatigue detector 10, the manipulator 3, the stepper motor 13, the upper cylinder 20, the lower cylinder 21, the servo motor 26, and the right-angle motor 24;

[0038] By operating the remote controller 29 to turn on the servo motor 26, under the support of the middle base frame 6, the servo motor 26 drives the servo threaded rod 27 to rotate, and the threaded sleeve 28 is driven to move under the threaded cooperation between the threaded rod 27 and the threaded sleeve 28. The threaded sleeve 28 drives the lateral metal fatigue detector 9 to move synchronously to facilitate lateral multi-position detection of metal structural parts, realizing the convenient lateral movable adjustment detection position of the metal structural part fatigue damage detection device, and facilitating the detection device to move the detection position in multiple lateral positions.

[0039] Working principle: When in use, an external power supply is connected. First, the staff moves the detection device to the designated detection position. The staff places the prepared metal structural parts in the placement rack 5 in sequence. The upper cylinder 20 drives the support rack 18 to move downward, and the support rack 18 drives the limit rod 31 to move downward. The limit sleeve 32 supports the limit rod 31. The stepper motor 13 drives the main gear 14 to rotate. Under the meshing action of the main gear 14 and the secondary gear 16, a group of secondary gears 16 are driven to rotate clockwise, and the other group of secondary gears 16 are driven to rotate counterclockwise. One group of secondary gears 16 drives the semicircular gear 30 to rotate clockwise through the support shaft 15, and the other group of secondary gears 16 drives the semicircular gear 30 to rotate counterclockwise through the support shaft 15. At this time, the outer teeth of a group of semicircular gears 30 It just contacts with the bottom of the rack 17, and the rack 17 is driven to move downward under the meshing action of the semicircular gear 30 and the rack 17, and the rack 17 drives the pressure bar 19 to move downward, and the fixed seat 33 slides and supports the pressure bar 19, and the pressure bar 19 drops to contact and squeeze the metal structure inside the placement rack 5. Since the outer teeth of the semicircular gear 30 just match the outer teeth of the rack 17, the semicircular gear 30 is a 120-degree sector gear. When one group of semicircular gears 30 just disengages from the rack 17, the outer teeth of the other group of semicircular gears 30 just contact with the top outer teeth of the rack 17. At this time, the other group of semicircular gears 30 drives the rack 17 to move upward, and the rack 17 drives the pressure bar 19 to move upward. In the same way, the pressure bar 19 is pressed down by the drive of the stepping motor 13. The strip 19 moves back and forth, and the pressure strip 19 moves back and forth to stamp the metal component. At this time, the metal structure inside the placement rack 5 is deformed or cracked. The lower cylinder 21 drives the push block rack 22 to move upward, and the push block rack 22 pushes the metal structure inside the placement rack 5 out of the inside of the placement rack 5. The manipulator 3 clamps and transports the pushed-out metal structure to the top of the middle bottom rack 6. The longitudinal metal fatigue detector 8 performs X-ray penetration detection on the longitudinal cracks of the metal structure, the transverse metal fatigue detector 9 performs X-ray penetration detection on the transverse cracks of the metal structure, and the oblique metal fatigue detector 10 performs X-ray penetration detection on the oblique cracks of the metal structure. The X-rays will be scattered or refracted at the cracks, and the X-rays will eventually be detected by the longitudinal metal fatigue detector. The sensors inside the instrument 8, the transverse metal fatigue detector 9 and the oblique metal fatigue detector 10 receive X-rays, and the internal logic processor transmits the received information to the external Internet to facilitate the staff to estimate the fatigue damage of the metal structural parts and determine the location and size of the cracks. When the metal component inspection is completed, the manipulator 3 grabs the metal component and transports it to the inside of the placement rack 5. The right-angle motor 24 drives the lower gear 25 to rotate. Under the meshing action of the lower gear 25 and the annular gear disk 23, the annular gear disk 23 is driven to rotate. The annular gear disk 23 drives the rotating disk 4 to rotate. The rotating disk 4 drives the placement rack 5 and the metal structural parts inside it to rotate synchronously. When the rotating disk 4 rotates, the rotating disk 4 drives the limit shaft 34 to rotate synchronously.The limiting shaft 34 slides within the annular groove 35 to provide limited support. This facilitates fatigue damage testing of the next set of metal structural components. The servo motor 26 drives the servo threaded rod 27 to rotate. The threaded rod 27 and the threaded sleeve 28 cooperate to drive the threaded sleeve 28 to move. The threaded sleeve 28 drives the lateral metal fatigue detector 9 to move synchronously, facilitating lateral multi-position testing of metal structural components, completing the use of the testing device.

Claims

1. A fatigue damage detection device for metal structural parts, comprising a center frame (1) and a mid-base frame (6), characterized in that: A middle base frame (6) is installed at the center position of the top of the center frame (1), a side base (2) is installed at the top of the center frame (1) on one side of the middle base frame (6), a manipulator (3) is installed at the top of the side base (2), a rotating disk (4) is provided at the top of the center frame (1) on one side of the manipulator (3), an annular groove (35) is provided at the top of the center frame (1) below the rotating disk (4), multiple groups of limiting shafts (34) with equal spacing are installed at the bottom of the rotating disk (4) above the annular groove (35), and the limiting shafts (34) are slidably connected to the annular groove (35), and the top of the rotating disk (4) is provided with a plurality of limiting shafts (34) with equal spacing. Six groups of placement racks (5) are installed at equal intervals, a curved frame (7) is installed on the side wall of the middle bottom frame (6) on one side of the rotating disk (4), a longitudinal metal fatigue detector (8) is installed on the side wall of the curved frame (7), a transverse metal fatigue detector (9) is slidably installed on the side wall of the middle bottom frame (6) on one side of the longitudinal metal fatigue detector (8), an oblique metal fatigue detector (10) is installed inside the middle bottom frame (6) on one side of the transverse metal fatigue detector (9), a left side frame (11) is installed on the side wall of the center frame (1), and a fixed frame (12) is installed on the top of the left side frame (11).

2. A metal structural component fatigue damage detection device according to claim 1, characterized in that: The bottom end of the fixing frame (12) is movably mounted with a support frame (18), and a limiting sleeve (32) is symmetrically mounted on the top end of the fixing frame (12) above the support frame (18). The limiting sleeve (32) is slidably mounted with a limiting rod (31) inside, and the bottom end of the limiting rod (31) is connected to the support frame (18).

3. The fatigue damage detection device for metal structural parts according to claim 2, characterized in that: A stepper motor (13) is mounted on the side wall of the support frame (18) on one side of the limiting rod (31), a main gear (14) is mounted on the output end of the stepper motor (13), and a support shaft (15) is symmetrically and movably mounted on the side wall of the support frame (18) on one side of the stepper motor (13), and the support shaft (15) extends to the outside of the support frame (18).

4. The fatigue damage detection device for metal structural parts according to claim 3, characterized in that: The outer wall of the support shaft (15) on one side of the main gear (14) is equipped with a secondary gear (16), and the secondary gear (16) is meshed with the main gear (14). The outer wall of the support shaft (15) on one side of the secondary gear (16) is equipped with a semicircular gear (30). A fixing seat (33) is installed on the outer wall of the support frame (18) below the main gear (14). A pressure strip (19) is slidably installed inside the fixing seat (33). A rack (17) is installed on the top of the pressure strip (19), and the rack (17) is meshed with the semicircular gear (30), and the tooth length of the rack (17) is equal to the annular tooth length of the semicircular gear (30).

5. The fatigue damage detection device for metal structural parts according to claim 2, characterized in that: An upper cylinder (20) is installed at the bottom end of the fixed frame (12) above the support frame (18), and the output end of the upper cylinder (20) is connected to the support frame (18). A lower cylinder (21) is installed at the top end of the fixed frame (12) below the upper cylinder (20), and a push block frame (22) is installed at the output end of the lower cylinder (21).

6. The fatigue damage detection device for metal structural parts according to claim 1, characterized in that: An annular gear disc (23) is installed at the bottom end of the rotating disk (4), a right-angle motor (24) is installed at the top end of the center frame (1) on one side of the annular gear disc (23), a lower gear (25) is installed at the output end of the right-angle motor (24), and the lower gear (25) is meshed with the annular gear disc (23).

7. The metal structural component fatigue damage detection device according to claim 1, characterized in that: A servo motor (26) is installed on the top of the middle bottom frame (6) below the bending frame (7), and a threaded sleeve (28) is slidably installed on the top of the middle bottom frame (6) on one side of the servo motor (26). The internal thread of the threaded sleeve (28) is connected to a servo threaded rod (27), and the servo threaded rod (27) extends to the outside of the threaded sleeve (28), and the servo threaded rod (27) is connected to the output end of the servo motor (26).

8. The metal structural component fatigue damage detection device according to claim 1, characterized in that: A remote controller (29) is installed at the top of the left side frame (11) on one side of the fixed frame (12), and the output end of the remote controller (29) is electrically connected to the input ends of the longitudinal metal fatigue detector (8), the transverse metal fatigue detector (9), the oblique metal fatigue detector (10), the manipulator (3), the stepping motor (13), the upper cylinder (20), the lower cylinder (21), the servo motor (26), and the right-angle motor (24).

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