A hexagonal nut internal thread detection device

Abstract

A hexagonal nut internal thread detection device comprises a nut coaxial drive device, a position adjustment component, the position adjustment component is arranged on the nut coaxial drive device, a plurality of toothed rings are arranged on the position adjustment component, and a plurality of nut clamping components are arranged on the toothed ring; the nut clamping component comprises a drive component, a nut clamping plate, a plurality of rollers and a plurality of pressure sensors, the drive component is arranged on the toothed ring, the nut clamping plate is arranged on the drive component, the plurality of rollers are respectively connected to the drive component through a plurality of pressure sensors, the pressure sensor is used to obtain the pressure value of the roller to detect whether the roller is in contact with the nut, and a laser distance measuring sensor is arranged on the roller; the drive component is used to drive the roller to roll on the nut to obtain the position of each corner of the nut, and the nut clamping plate can be driven to contact and connect with the corner of the nut. Thus, a plurality of nuts can be efficiently stacked neatly and fixed, and the efficiency of thread detection can be improved by detecting a plurality of nuts at a time.

Description

Technical Field

[0001] The invention relates to the technical field of fastener detection, and in particular to a hexagonal nut internal thread detection device. Background Art

[0002] The thread quality of the nut directly affects the strength and reliability of the threaded fastener connection. Large-sized nuts are often used in important applications such as heavy equipment, building structures, bridges, etc. Thread inspection can ensure that the nut is perfectly matched with the matching bolt or other connecting parts, avoiding the situation where the connection is not firm or cannot be installed due to size mismatch.

[0003] In the related art, after the nut is fixed with a clamp, a thread gauge is usually used to inspect the quality of the internal thread of the nut. However, this method can only inspect one nut at a time, has low inspection efficiency, and is not conducive to large-scale production of nuts. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the above-mentioned technology at least to some extent.

[0005] To this end, the purpose of the present invention is to provide a hexagonal nut internal thread detection device, which can efficiently stack and fix multiple nuts neatly, and improve the efficiency of thread detection by detecting multiple nuts at one time.

[0006] To achieve the above-mentioned purpose, the present invention proposes a hexagonal nut internal thread detection device, comprising: a nut coaxial driving device, used to drive multiple nuts to be on the same axis; a position adjustment component, the position adjustment component is arranged on the nut coaxial driving device, and multiple toothed rings are respectively arranged on the position adjustment component, and multiple nut clamping components are arranged on the toothed ring; the nut clamping component comprises: a driving component, a nut clamping plate, multiple rollers and multiple pressure sensors, wherein the driving component is arranged on the toothed ring, the nut clamping plate is arranged on the driving component, and the multiple rollers are respectively connected to the driving component through the pressure sensors, the pressure sensor is used to obtain the pressure value of the roller to detect whether the roller is in contact with the nut, and the roller is provided with a laser ranging sensor; the driving component is used to drive the roller to roll on the nut to obtain the position of each corner of the nut, and can drive the nut clamping plate to contact and connect with the corners of the nut; an electronically controlled thread gauge, the electronically controlled thread gauge is arranged on the nut coaxial driving device, and is used to detect the internal thread of the nut.

[0007] In one embodiment of the present invention, the driving assembly includes: a gear ring driving device, a horizontal driving device, a driving warehouse, a first motor, a driving wheel and two ball screw driving components, wherein the gear ring driving device is arranged on the gear ring, the horizontal driving device is arranged on the gear ring driving device, the driving warehouse is arranged on the horizontal driving device, the first motor is arranged in the driving warehouse, the driving wheel is arranged at the driving end of the first motor, the two ball screw driving components are respectively arranged in the driving warehouse, and the two ball screw driving components are respectively connected to the driving wheels.

[0008] In one embodiment of the present invention, the ball screw drive comprises: a first ball screw, a driven wheel, a first ball slider and a connecting piece, wherein the first ball screw is rotatably arranged in the driving chamber through a bearing, the driven wheel is arranged on the first ball screw, and the driven wheel is meshed with the driving wheel, the first ball slider is arranged on the first ball screw, and the connecting piece is arranged on the first ball slider.

[0009] In one embodiment of the present invention, the thread directions of the two first ball screws are opposite, and the nut clamping plate is provided on one of the connecting parts. The nut clamping plate is a bent plate, and the nut clamping plate is clamped on the corner of the nut. The other connecting part is connected to the roller through the pressure sensor.

[0010] In one embodiment of the present invention, the roller comprises: a wheel body and a wheel frame, wherein the wheel body is rotatably arranged on the wheel frame, the wheel frame is connected to a pressure sensor, and the laser ranging sensor is arranged on the wheel frame.

[0011] In one embodiment of the present invention, the gear ring drive device includes: a moving block, a limiting slide block, a second motor and a driving wheel, wherein a limiting slide groove is provided on the gear ring, a mounting groove is provided on the moving block, the moving block is slidably connected to the gear ring, the limiting slide block is arranged in the mounting groove, and the limiting slide block is slidably connected to the limiting slide groove, the second motor is arranged in the mounting groove, the driving wheel is arranged at the driving end of the second motor, and the driving wheel is meshed with the gear ring.

[0012] In one embodiment of the present invention, the position adjustment component includes: a tube body, a third motor, a second ball screw, a plurality of second ball sliders and a plurality of first connecting plates, the plurality of second ball sliders, the plurality of first connecting plates and the plurality of gear rings corresponding to each other one by one, wherein the tube body is arranged on the nut coaxial drive device, a groove is provided on the inner wall of the tube body, the third motor is arranged in the groove, the second ball screw is arranged at the driving end of the third motor, a plurality of second ball sliders are respectively arranged on the second ball screw, and the second ball slider is connected to the gear ring through the first connecting plate.

[0013] In one embodiment of the present invention, an electromagnet rod is provided on the tube body, a plurality of iron pipes are slidably provided on the electromagnet rod, the iron pipes are connected to the gear ring via a second connecting plate, and the iron pipes are magnetically connected to the electromagnet rod.

[0014] In one embodiment of the present invention, the nut coaxial driving device includes: an installation bin, a vertical driving device, a circular ring plate, a plurality of electric telescopic rods and a plurality of resisting rods, wherein the position adjustment assembly is arranged on the upper part of the installation bin, the vertical driving device is arranged in the installation bin, the circular ring plate is arranged on the vertical driving device, the plurality of electric telescopic rods are arranged on the inner wall of the circular ring plate at equal intervals around the central axis of the circular ring plate, the plurality of resisting rods are respectively arranged on the telescopic ends of the plurality of electric telescopic rods, and the resisting rods are in contact with the inner threaded wall of the nut.

[0015] In one embodiment of the present invention, the electrically controlled thread gauge comprises: a hydraulic lifting device, a fourth motor and a thread gauge body, wherein the hydraulic lifting device is arranged on the nut coaxial driving device, the fourth motor is arranged at the telescopic end of the hydraulic lifting device, and the thread gauge body is arranged at the driving end of the fourth motor.

[0016] Beneficial effects of the present invention:

[0017] The driving component can drive the roller to move to a suitable working position (in this working position, the roller is perpendicular to and abuts against a side wall of the nut) through the pressure value detected in real time by the pressure sensor and the distance value detected in real time by the laser distance sensor. The driving component positions the corners of the nut by driving multiple rollers to roll on a side wall of the nut. After positioning the corners, the driving component can drive the nut clamp to abut against the nut. The nut is fixed under the limit of multiple nut clamps, so that multiple nuts can be inspected at one time, thereby improving the inspection efficiency of the nuts.

[0018] The multiple driving components on the gear ring can drive the corresponding nut clamps to move, and the nuts are rotated by the nut clamps to align the multiple nuts with each other, in order to facilitate material retrieval (for example, manual retrieval, robot retrieval, etc.) and storage.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 It is a schematic diagram of the overall structure of a hexagonal nut internal thread detection device according to an embodiment of the present invention;

[0022] Figure 2 is a schematic cross-sectional structural diagram of a position adjustment component according to an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the connection structure of a gear ring and a nut clamping assembly according to an embodiment of the present invention;

[0024] Figure 4 is a schematic cross-sectional structural diagram of a nut clamping assembly according to an embodiment of the present invention;

[0025] Figure 5 is a schematic cross-sectional structural diagram of a horizontal driving device according to an embodiment of the present invention;

[0026] Figure 6 is a schematic cross-sectional structural diagram of a position adjustment component according to another embodiment of the present invention;

[0027] Figure 7 is a schematic cross-sectional structural diagram of a nut coaxial driving device according to an embodiment of the present invention;

[0028] Figure 8 A diagram showing a nut clamping assembly in use according to an embodiment of the present invention;

[0029] Fig. 9 A diagram showing a nut clamping assembly in use according to another embodiment of the present invention;

[0030] Fig.10 for Figure 4 A partial enlarged view of area A in the middle.

[0031] As shown in the figure: 1. nut coaxial drive device; 2. position adjustment component; 3. gear ring; 4. nut clamping component; 5. drive component; 6. nut clamping plate; 7. roller; 8. pressure sensor; 9. laser ranging sensor; 10. gear ring drive device; 11. horizontal drive device; 12. drive compartment; 13. first motor; 14. driving wheel; 15. ball screw drive; 16. first ball screw; 17. driven wheel; 18. first ball slider; 19. connecting piece; 20. moving block; 21. limit slider; 22. second motor; 23. Driving wheel; 24. Limiting slide groove; 25. Mounting groove; 26. Tube body; 27. Third motor; 28. Second ball screw; 29. ​​Second ball slider; 30. First connecting plate; 31. Groove; 32. Electromagnetic iron rod; 33. Iron pipe; 34. Second connecting plate; 35. Mounting bin; 36. Vertical driving device; 37. Circular plate; 38. Electric telescopic rod; 39. Push rod; 40. Electric-controlled thread gauge; 41. Hydraulic lifting device; 42. Fourth motor; 43. Thread gauge body; 44. Wheel body; 45. Wheel frame; 46. Control console. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] The following describes a hexagonal nut internal thread detection device according to an embodiment of the present invention with reference to the accompanying drawings.

[0034] The hexagonal nut internal thread detection equipment provided in the embodiment of the present invention can be used in the production line of medium and large hexagonal nuts to perform internal thread detection on the produced products, ensure the quality of the internal threads, improve the safety of use, and effectively avoid safety hazards caused by thread problems.

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the hexagonal nut internal thread detection device according to an embodiment of the present invention may include: a nut coaxial driving device 1, a position adjustment component 2 and an electronically controlled thread gauge 40.

[0036] The nut coaxial driving device 1 is used to drive multiple nuts on the same axis. The position adjustment component 2 is arranged on the nut coaxial driving device 1. Multiple gear rings 3 are respectively arranged on the position adjustment component 2, and multiple nut clamping components 4 are arranged on the gear rings 3.

[0037] The nut clamping assembly 4 may include: a driving assembly 5, a nut clamping plate 6, multiple rollers 7 and multiple pressure sensors 8, and the multiple rollers 7 and the multiple pressure sensors 8 correspond one to one, wherein the driving assembly 5 is arranged on the gear ring 3, the nut clamping plate 6 is arranged on the driving assembly 5, the roller 7 is connected to the driving assembly 5 through the pressure sensor 8, and the roller 7 is provided with a laser ranging sensor 9.

[0038] The pressure sensor 8 is used to obtain the pressure value of the roller 7 to detect whether the roller 7 is in contact with the nut.

[0039] It can be understood that the pressure sensor 8 described in this embodiment can detect the pressure exerted on the roller 7 in real time, and detect the working position of the roller 7 through the change of the pressure value.

[0040] The driving assembly 5 is used to drive the roller 7 to roll on the nut to obtain the position of each corner of the nut, and can drive the nut clamping plate 6 to contact and connect with the corner of the nut. The electric control thread gauge 40 is arranged on the nut coaxial driving device to detect the internal thread of the nut.

[0041] It should be noted that the driving assembly 5 described in this embodiment can adjust the working position of the roller 7 so that it rolls on a side wall of the nut, and the position of the nut corner is determined by the rolling distance. After the nut corner is determined, the nut clamping plate 6 can be driven to abut against the nut corner, and the nut can be clamped and fixed by multiple nut clamping plates 6, and the nut can be rotated by moving the driving assembly 5 on the gear ring 3, so that multiple nuts are aligned with each other, which is convenient for taking out and storing the nuts after detection.

[0042] In order to clearly explain the above embodiment, in one embodiment of the present invention, as Figure 3 , Figure 4 , Figure 5 , Figure 8 ,and Fig. 9 As shown, the driving assembly 5 may include: a gear ring driving device 10, a horizontal driving device 11, a driving bin 12, a first motor 13, a driving wheel 14 and two ball screw driving members 15.

[0043] The gear ring drive device 10 is arranged on the gear ring 3, the horizontal drive device 11 is arranged on the gear ring drive device 10, a drive bin 12 is arranged on the horizontal drive device 11, a first motor 13 is arranged in the drive bin 12, a driving wheel 14 is arranged at the driving end of the first motor 13, two ball screw drive components 15 are respectively arranged in the drive bin 12, and the two ball screw drive components 15 are respectively connected to the driving wheel 14.

[0044] The ball screw drive 15 may include: a first ball screw 16, a driven wheel 17, a first ball slider 18 and a connecting piece 19. The first ball screw 16 is rotatably arranged in the driving compartment 12 through a bearing. The driven wheel 17 is arranged on the first ball screw 16, and the driven wheel 17 is meshed with the driving wheel 14. The first ball slider 18 is arranged on the first ball screw 16, and the connecting piece 19 is arranged on the first ball slider 18.

[0045] The two first ball screws 16 have opposite screw directions, a nut clamping plate 6 is provided on one connecting member 19, the nut clamping plate 6 is a bent plate, the nut clamping plate 6 is clamped on the corner of the nut, and the other connecting member 19 is connected to the roller 7 through the pressure sensor 8. It should be noted that the two connecting members 19 can be adaptively adjusted according to actual conditions, for example, the connecting member 19 connected to the nut clamping plate 6 can be a rod body, and the connecting member 19 connected to the pressure sensor 8 can be multiple rod bodies, and the multiple rod bodies correspond to the multiple pressure sensors 8 one by one.

[0046] It can be understood that the gear ring drive device 10 described in this embodiment can drive the horizontal drive device 11 to move along the gear ring 3, and the horizontal drive device 11 can drive the drive bin 12 to move horizontally, and when the first motor 13 drives the two ball screw drive members 15 through the driving wheel 14, the two ball screw drive members 15 will simultaneously drive the nut clamping plate 6 and the roller 7 to move in the opposite direction. That is, the nut clamping plate 6 and the roller 7 will not contact the nut at the same time.

[0047] Further, such as Figure 3 , Figure 4 , Figure 8 , Fig. 9 and Fig.10 As shown, the roller 7 may include: a wheel body 44 and a wheel frame 45. The wheel body 44 is rotatably arranged on the wheel frame 45, the wheel frame 45 is connected to the pressure sensor 8, and the laser distance sensor 9 is arranged on the wheel frame 45.

[0048] It should be noted that the laser ranging sensor 9 described in this embodiment is used to detect the distance value between itself and the nut. The preset value of the distance value is the distance value obtained by the laser ranging sensor 9 when the wheel body 44 is perpendicular to one side wall of the nut.

[0049] The gear ring drive device 10 may include: a moving block 20, a limiting slide block 21, a second motor 22 and a driving wheel 23, wherein a limiting slide groove 24 is provided on the gear ring 3, a mounting groove 25 is provided on the moving block 20, the moving block 20 is slidingly connected to the gear ring 3, the limiting slide block 21 is arranged in the mounting groove 25, and the limiting slide block 21 is slidingly connected to the limiting slide groove 24, the second motor 22 is arranged in the mounting groove 25, the driving wheel 23 is arranged at the driving end of the second motor 22, and the driving wheel 23 is meshed with the gear ring 3.

[0050] It can be understood that the limiting groove 24 described in this embodiment is an annular groove with a T-shaped cross section, the limiting slider 21 is a fan-shaped slider with a T-shaped cross section, and the limiting groove 24 plays a limiting support role for the limiting slider 21.

[0051] Specifically, the relevant personnel can stack the multiple nuts on the nut coaxial driving device 1 in sequence by hand or with the help of tools. The nut coaxial driving device 1 makes the stacked multiple nuts on the same axis, and the position adjustment component 2 adjusts the working positions of the multiple gear rings 3 according to the size of the nuts, so that the multiple gear rings 3 correspond to the multiple nuts respectively (if the size of the nut is large, more than two gear rings 3 can also correspond to one nut).

[0052] When the clamping and positioning begins, the first motor 13 can simultaneously drive the two driven wheels 17 to rotate through the driving wheel 14, and the driven wheel 17 can drive the first ball screw 16 to rotate, and the first ball slider 18 moves on the corresponding first ball screw 16. Since the two first ball screws 16 have opposite screw directions, the two first ball screws 16 will move in opposite directions at the same time. The first ball slider 18 first drives the pressure sensor 8 and the roller 7 to move toward the nut through the connecting piece 19. After one of the multiple rollers 7 contacts the nut, if the distance value obtained by the laser distance sensor 9 is the preset value, the wheel body 44 reaches the target position (at this position, the wheel body 44 is perpendicular to a side wall of the nut).

[0053] If the distance value obtained by the laser ranging sensor 9 is not the preset value, it is necessary to adjust the position of the roller 7. The second motor 22 drives the driving wheel 23 to rotate. The driving wheel 23 drives the driving chamber 12 to move along the gear ring 3 by meshing with the gear ring 3. During the movement of the driving chamber 12, the first motor 13 drives the wheel body 44 to reciprocate through the ball screw drive 15 until multiple rollers 7 are in contact with the nuts and the distance values ​​obtained by the corresponding laser ranging sensors 9 are all preset values.

[0054] The horizontal drive device 11 can control the horizontal movement of the roller 7 by moving the drive bin 12. The reciprocating rolling of the roller 7 can position the angle of the nut. After positioning, the first motor 13 drives the wheel body 44 away from the nut through the ball screw drive 15, while driving the nut clamping plate 6 to clamp on the corner of the nut. After multiple nuts are clamped, the gear ring drive devices 10 on different gear rings 3 are started at the same time, driving the nuts to rotate and align them with each other. After the nut coaxial drive device 1 is separated from the nut, the internal thread of the nut can be inspected using a gauge.

[0055] In one embodiment of the present invention, Figure 2 and Figure 6As shown, the position adjustment component 2 may include: a tube body 26, a third motor 27, a second ball screw 28, multiple second ball sliders 29 and multiple first connecting plates 30, and the multiple second ball sliders 29, multiple first connecting plates 30 and multiple gear rings 3 correspond one to one.

[0056] The tube body 26 is arranged on the nut coaxial driving device 1, and a groove 31 is formed on the inner wall of the tube body 26. The third motor 27 is arranged in the groove 31. The second ball screw 28 is arranged at the driving end of the third motor 27. A plurality of second ball sliders 29 are respectively arranged on the second ball screws 28, and the second ball sliders 29 are connected to the gear ring 3 through the first connecting plate 30. An electromagnet rod 32 is arranged on the tube body 26, and a plurality of iron pipes 33 are slidably arranged on the electromagnet rod 32. The iron pipes 33 are connected to the gear ring 3 through the second connecting plate 34, and the iron pipes 33 are magnetically connected to the electromagnet rod 32.

[0057] It can be understood that the third motor 27 described in this embodiment can drive the second ball screw 28 to rotate, and the positions of the multiple gear rings 3 can be adjusted by moving the multiple second ball sliders 29 on the second ball screw 28.

[0058] It should be noted that there are multiple types of pitches on the second ball screw 28 described in this embodiment, and the multiple pitches correspond one-to-one to the multiple second ball sliders 29 .

[0059] In one embodiment of the present invention, Figure 7 As shown, the nut coaxial drive device 1 may include: a mounting chamber 35, a vertical drive device 36, a circular plate 37, a plurality of electric telescopic rods 38 and a plurality of abutment rods 39. The position adjustment assembly 2 is arranged on the upper part of the mounting chamber 35 (the tube body 26 is arranged on the upper part of the mounting chamber 35), the vertical drive device 36 is arranged in the mounting chamber 35, the circular plate 37 is arranged on the vertical drive device 36, a plurality of electric telescopic rods 38 are arranged on the inner wall of the circular plate 37 at equal intervals around the central axis of the circular plate 37, a plurality of abutment rods 39 are respectively arranged on the telescopic ends of the plurality of electric telescopic rods 38, and the abutment rods 39 are abutted and connected with the inner thread wall of the nut.

[0060] It can be understood that the vertical drive device 36 described in this embodiment can drive the circular ring plate 37 to move vertically, and the moving circular ring plate 37 drives the push rod 39 to be inserted into the internal threaded holes of multiple nuts through the electric telescopic rod 38. The electric telescopic rod 38 can push the push rod 39 to abut against the internal threaded holes, and multiple push rods 39 can align the internal threaded holes of multiple nuts.

[0061] It should be noted that the vertical drive device 36 and the horizontal drive device 11 described in this embodiment both use ball screw pair drivers.

[0062] In one embodiment of the present invention, Figure 7As shown, the electric-controlled thread gauge 40 may include: a hydraulic lifting device 41, a fourth motor 42 and a thread gauge body 43, wherein the hydraulic lifting device 41 is arranged on the nut coaxial driving device 1, the fourth motor 42 is arranged at the telescopic end of the hydraulic lifting device 41, and the thread gauge body 43 is arranged at the driving end of the fourth motor 42.

[0063] It can be understood that the hydraulic lifting device 41 described in this embodiment can drive the thread gauge body 43 to move vertically through the fourth motor 42, and can drive the thread gauge body 43 to rotate through the fourth motor 42 to detect multiple stacked nuts.

[0064] In one embodiment of the present invention, Figure 1 As shown, it may also include: a control console 46, which is arranged on the nut coaxial driving device 1, and the control console 46 is electrically connected to the nut coaxial driving device 1, the position adjustment component 2, the nut clamping component 4, the hydraulic lifting device 41, and the fourth motor 42 respectively.

[0065] It should be noted that the motors mentioned in the above embodiments (for example, the first motor 13, the second motor 22, and the third motor 27) are equipped with brakes, which can be used to quickly stop the motors. A reduction gearbox is provided on the driving end of the motor, and the driving end of the motor is connected to the input end of the reduction gearbox. The output end of the reduction gearbox constitutes the driving end of the motor, and the speed of the motor output is adjusted by the reduction gearbox.

[0066] In summary, the hexagonal nut internal thread detection device of the embodiment of the present invention can efficiently stack and fix multiple nuts neatly, and improve the efficiency of thread detection by detecting multiple nuts at one time.

[0067] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0069] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A hexagonal nut internal thread detection device, characterized in that: include: A nut coaxial driving device (1) is used to drive a plurality of nuts on the same axis; A position adjustment component (2), the position adjustment component (2) being arranged on the nut coaxial driving device (1), the position adjustment component (2) being respectively provided with a plurality of toothed rings (3), and the toothed rings (3) being provided with a plurality of nut clamping components (4); The nut clamping assembly (4) comprises: a driving assembly (5), a nut clamping plate (6), a plurality of rollers (7) and a plurality of pressure sensors (8), wherein the driving assembly (5) is arranged on the gear ring (3), the nut clamping plate (6) is arranged on the driving assembly (5), the plurality of rollers (7) are respectively connected to the driving assembly (5) via the pressure sensors (8), the pressure sensors (8) are used to obtain the pressure value of the rollers (7) to detect whether the rollers (7) are in contact with the nut, the rollers (7) are provided with laser distance measuring sensors (9), the driving assembly (5) is used to drive the rollers (7) to roll on the nut to obtain the positions of the corners of the nut, and can drive the nut clamping plate (6) to be in contact with the corners of the nut, and the electric-controlled thread gauge (40) is arranged on the nut coaxial driving device (1) to detect the internal threads of the nut; The position adjustment component (2) comprises: a tube body (26), a third motor (27), a second ball screw (28), a plurality of second ball sliders (29) and a plurality of first connecting plates (30), wherein the plurality of second ball sliders (29), the plurality of first connecting plates (30) and the plurality of gear rings (3) correspond to each other in a one-to-one manner, wherein the tube body (26) is arranged on the nut coaxial drive device (1), a groove (31) is formed on the inner wall of the tube body (26), the third motor (27) is arranged in the groove (31), the second ball screw (28) is arranged at the driving end of the third motor (27), the plurality of second ball sliders (29) are respectively arranged on the second ball screw (28), and the second ball sliders (29) are connected to the gear ring (3) via the first connecting plate (30); The nut coaxial drive device (1) comprises: a mounting bin (35), a vertical drive device (36), a circular plate (37), a plurality of electric telescopic rods (38) and a plurality of abutment rods (39), wherein the position adjustment assembly (2) is arranged on the upper part of the mounting bin (35), the vertical drive device (36) is arranged in the mounting bin (35), the circular plate (37) is arranged on the vertical drive device (36), the plurality of electric telescopic rods (38) are arranged on the inner wall of the circular plate (37) at equal intervals around the central axis of the circular plate (37), the plurality of abutment rods (39) are respectively arranged on the telescopic ends of the plurality of electric telescopic rods (38), and the abutment rods (39) are abuttingly connected with the inner thread wall of the nut.

2. The hexagonal nut internal thread detection device according to claim 1, characterized in that The drive assembly (5) comprises: a gear ring drive device (10), a horizontal drive device (11), a drive bin (12), a first motor (13), a driving wheel (14) and two ball screw drive members (15), wherein the gear ring drive device (10) is arranged on the gear ring (3), the horizontal drive device (11) is arranged on the gear ring drive device (10), the drive bin (12) is arranged on the horizontal drive device (11), the first motor (13) is arranged in the drive bin (12), the driving wheel (14) is arranged at the driving end of the first motor (13), and the two ball screw drive members (15) are respectively arranged in the drive bin (12), and the two ball screw drive members (15) are respectively connected to the driving wheel (14).

3. The hexagonal nut internal thread detection device according to claim 2, characterized in that: The ball screw driving member (15) comprises: a first ball screw (16), a driven wheel (17), a first ball slider (18) and a connecting member (19), wherein: The first ball screw (16) is rotatably arranged in the driving chamber (12) via a bearing, the driven wheel (17) is arranged on the first ball screw (16), and the driven wheel (17) and the driving wheel (14) are meshed with each other, the first ball slider (18) is arranged on the first ball screw (16), and the connecting member (19) is arranged on the first ball slider (18).

4. The hexagonal nut internal thread detection device according to claim 3, characterized in that The two first ball screws (16) have opposite thread directions, one of the connecting members (19) is provided with the nut clamping plate (6), the nut clamping plate (6) is a bent plate, the nut clamping plate (6) is clamped on the corner of the nut, and the other connecting member (19) is connected to the roller (7) via the pressure sensor (8).

5. The hexagonal nut internal thread detection device according to claim 2, characterized in that: The roller (7) comprises a wheel body (44) and a wheel frame (45), wherein the wheel body (44) is rotatably arranged on the wheel frame (45), the wheel frame (45) is connected to a pressure sensor (8), and the laser distance sensor (9) is arranged on the wheel frame (45).

6. The hexagonal nut internal thread detection device according to claim 2, characterized in that: The gear ring drive device (10) comprises: a moving block (20), a limiting slide block (21), a second motor (22) and a driving wheel (23), wherein the gear ring (3) is provided with a limiting slide groove (24), the moving block (20) is provided with a mounting groove (25), the moving block (20) is slidably connected to the gear ring (3), the limiting slide block (21) is arranged in the mounting groove (25), and the limiting slide block (21) is slidably connected to the limiting slide groove (24), the second motor (22) is arranged in the mounting groove (25), the driving wheel (23) is arranged at the driving end of the second motor (22), and the driving wheel (23) and the gear ring (3) are meshed with each other.

7. The hexagonal nut internal thread detection device according to claim 1, characterized in that The tube body (26) is provided with an electromagnet rod (32), and a plurality of iron tubes (33) are slidably provided on the electromagnet rod (32). The iron tubes (33) are connected to the gear ring (3) via a second connecting plate (34), and the iron tubes (33) are magnetically connected to the electromagnet rod (32).

8. The hexagonal nut internal thread detection device according to claim 1, characterized in that The electric-controlled thread gauge (40) comprises: a hydraulic lifting device (41), a fourth motor (42) and a thread gauge body (43), wherein the hydraulic lifting device (41) is arranged on the nut coaxial driving device (1), the fourth motor (42) is arranged at the telescopic end of the hydraulic lifting device (41), and the thread gauge body (43) is arranged at the driving end of the fourth motor (42).

Images