A bolt axial force torque testing machine

Abstract

The present invention belongs to the technical field of bolt performance testing, and discloses a bolt axial force torque testing machine; it includes a housing, a driving assembly is fixedly connected to the housing through a bracket plate, and a rotating shaft is arranged at the output end of the driving assembly. The present invention sets a thrust assembly, and in the process of the bolt being screwed into the screw sleeve, in order to test the influence of the screw sleeve on the axial force and torque under the action of horizontal thrust, the first motor is started to drive the first circular gear to rotate, and the first circular gear drives the first rotating shaft and the second rotating shaft to rotate through the second circular gear, and the rotation of the second rotating shaft can make the threaded column detach from the second rotating shaft, and the threaded column drives the sleeve to move, and the movement of the sleeve makes one end of the moving column abut against the inner wall of the column sleeve, thereby driving the moving column to move, and the moving column applies horizontal thrust to the screw sleeve through the connecting ball and the connecting block, and the second pressure sensor can test the magnitude of the applied horizontal thrust, so as to realize the test of the axial force and torque of the screw sleeve under the action of horizontal thrust in the process of the bolt being screwed into the screw sleeve.

Description

Technical Field

[0001] The present invention relates to the technical field of bolt performance testing, and more specifically, to a bolt axial force torque testing machine. Background Art

[0002] Bolts, as mechanical connectors, are widely used in various mechanical equipment, building structures, transportation vehicles and other fields. The tightening performance of bolts directly affects the stability and safety of the entire system. Bolts generate corresponding axial force and torque parameters during the tightening process. These parameters can be tested by a special bolt testing machine. These parameters can evaluate key indicators such as the tightening performance, fatigue life, and preload retention capacity of bolts, providing a scientific basis for the selection, use and maintenance of bolts.

[0003] Existing bolt testing machines usually drive the bolt to be tested to be screwed into the nut through a driving assembly, and set pressure sensors and torque sensors at appropriate positions to test the axial force and torque during the screwing-in process. However, the testing process of the current bolt testing machine is based on an ideal state, that is, the bolt can only be simply screwed into the nut, and the various parameters obtained are also parameters under the ideal state, and it is impossible to test the various parameters in a real environment. In the process of screwing the bolt into the nut in a real environment, the nut may be subjected to a horizontal force, which will affect the screwing-in of the bolt, and then affect the actual axial force and torque of the bolt. However, the current bolt testing machine cannot test the axial force and torque of the bolt when the nut is subjected to a horizontal force. Summary of the invention

[0004] The present invention proposes a bolt axial force and torque testing machine to solve the problem that the current bolt testing machine in the background technology cannot test the axial force and torque of the bolt when the nut is subjected to horizontal force.

[0005] To achieve the above object, the present invention provides the following technical solutions: a bolt axial force torque testing machine, comprising a housing, a driving assembly is fixedly connected to the housing through a bracket plate, a rotating shaft is arranged at the output end of the driving assembly, a torque sensor is arranged in the middle of the rotating shaft, a first pressure sensor is fixedly connected to the bottom end of the rotating shaft, a connecting sleeve for clamping the bolt to be tested is fixedly connected to the bottom of the first pressure sensor, and further comprising:

[0006] A plurality of screw sleeves, the top screw sleeve is located directly below the bolt to be tested, and a thrust assembly is provided on one side of the screw sleeve, the thrust assembly is used to apply horizontal thrust to the screw sleeve, and an angle adjustment assembly is provided on the housing, the angle adjustment assembly is used to adjust the direction in which the thrust assembly applies thrust to the screw sleeve;

[0007] The smearing component is arranged at the bottom of the shell and is located directly below the lowest screw sleeve. The smearing component is used to smear lubricating material into the lowest screw sleeve.

[0008] Further, the thrust assembly includes a first motor, an output shaft of the first motor is fixedly connected to a first circular gear, a first rotating shaft and a second rotating shaft are provided on one side of the first motor, one end of the first rotating shaft is rotatably connected to one end of the second rotating shaft, the other end of the first rotating shaft is fixedly connected to a second circular gear meshing with the first circular gear, a threaded column is internally threadedly connected to the second rotating shaft, one end of the threaded column is rotatably connected to a sleeve, a moving column is slidably inserted in the sleeve, one end of the moving column is fixedly connected to a connecting ball, one end of the moving column is provided with a connecting block, a second pressure sensor in contact with one of the screw sleeves is fixedly connected to the connecting block, the connecting ball rotates universally in the connecting block, an annular plate is sleeved on the outer side of the screw sleeve, and a spring is fixedly connected between the inner wall of the annular plate and the screw sleeve.

[0009] Furthermore, the angle adjustment assembly includes a connection box arranged below the first motor, a support plate rotatably connected to the first rotating shaft and the second rotating shaft is fixedly connected to the connection box, one end of the threaded column is fixedly connected to an L-shaped telescopic rod fixedly connected to the support plate, an arc plate is fixedly connected to the inner wall of the shell through a mounting column, an arc-shaped rack passing through the connection box is fixedly connected to the arc-shaped plate, a third circular gear located in the connection box is meshed with one side of the arc-shaped rack, a third rotating shaft rotatably connected to the connection box is fixedly connected to the middle part of the third circular gear, and the connection box is rotatably connected to the third rotating shaft. There is a fourth rotating shaft, one end of the fourth rotating shaft and the outer wall of the third rotating shaft are fixedly connected with mutually meshing bevel gears, the other end of the fourth rotating shaft is fixedly connected with a fourth circular gear, a first electric push rod is fixedly connected in the connecting box, the output end of the first electric push rod is fixedly connected with a moving plate slidably connected to the connecting box, the moving plate is fixedly connected to the first motor, the outer walls of the screw sleeves are fixedly connected with connecting arc plates, the connecting block is located between two of the connecting arc plates, two rubber pads are fixedly connected to the screw sleeves, and the two rubber pads are respectively in contact with the top and bottom of the annular plate.

[0010] Furthermore, a connecting rod is fixedly connected to the first motor, one end of the connecting rod is fixedly connected to a connecting ring, the inner wall of the connecting ring is rotatably connected to a rotating ring, the rotating ring is fixedly connected to a connecting block slidably connected to the first rotating shaft, one end of the connecting block is fixedly connected to a hexagonal prism slidably inserted into one end of the first rotating shaft, one end of the second rotating shaft is fixedly connected to a hexagonal groove, and the hexagonal prism is inserted in the hexagonal groove.

[0011] Furthermore, two connecting columns are fixedly connected to the first motor, one end of each connecting column is fixedly connected to an insert column, two L-shaped arc plates are fixedly connected to the arc plate, a plurality of insert holes are formed on the L-shaped arc plate, and the insert columns are inserted into corresponding insert holes.

[0012] Furthermore, a switching assembly for switching different screw sleeves is provided in the shell, and the switching assembly includes a fixed column rotatably connected to the inner wall of the shell, the outer wall of the fixed column is rotatably connected to a rotating sleeve, a plurality of connecting columns are fixedly connected to the rotating sleeve, one end of the connecting columns is respectively fixedly connected to the corresponding annular plates, a gear ring is fixedly connected to the outer wall of the rotating sleeve, a second motor is fixedly connected to the fixed column through a mounting block, and the output shaft of the second motor is fixedly connected to a fifth circular gear meshing with the gear ring.

[0013] Furthermore, the application assembly includes an electric telescopic rod fixedly connected to the bottom inner wall of the shell, the output end of the electric telescopic rod is fixedly connected to a U-shaped plate, the U-shaped plate is rotatably connected to a fifth rotating shaft, one end of the fifth rotating shaft is fixedly connected to a rubber ring in contact with the U-shaped plate, the outer wall of the fifth rotating shaft is rotatably connected to a fixed shaft, the outer wall of the fixed shaft is fixedly connected to a sponge block, the bottom inner wall of the shell is fixedly connected to a storage barrel, the storage barrel is filled with lubricating oil, and the sponge block is located in the storage barrel, the outer wall of the fifth rotating shaft is fixedly connected to a half gear, the bottom inner wall of the shell is fixedly connected to a first spur rack through an L-shaped column, and the teeth of the first spur rack are located directly above the rightmost teeth of the half gear.

[0014] Furthermore, a second electric push rod is fixedly connected to the inner wall of the housing, a second spur rack is fixedly connected to the output end of the second electric push rod, and a gear sleeve is fixedly connected to the outer wall of the fixed shaft.

[0015] The technical effects and advantages of the bolt axial force torque testing machine of the present invention are as follows:

[0016] (1) By setting a thrust assembly, in order to test the influence of horizontal thrust on the axial force and torque of the screw sleeve during the process of screwing the bolt into the screw sleeve, the first motor is started to drive the first circular gear to rotate, and the first circular gear drives the first rotating shaft and the second rotating shaft to rotate through the second circular gear. The rotation of the second rotating shaft can make the threaded column disengage from the second rotating shaft, and the threaded column drives the sleeve to move. The movement of the sleeve makes one end of the moving column abut against the inner wall of the column sleeve, thereby driving the moving column to move. The moving column applies horizontal thrust to the screw sleeve through the connecting ball and the connecting block. The second pressure sensor can test the size of the applied horizontal thrust, so as to realize the test of the axial force and torque of the screw sleeve under the action of horizontal thrust during the process of screwing the bolt into the screw sleeve.

[0017] (2) By setting up a coating component, under different lubrication conditions, the axial force and torque during the process of screwing the bolt into the screw sleeve are different. Screw sleeves with different lubrication conditions can be set for testing. When it is necessary to apply lubricating oil to the inside of the lowest screw sleeve, start the electric telescopic rod to drive the U-shaped plate and the sponge block to move upward, so that the sponge block continues to move upward after leaving the storage barrel. The half gear will mesh with the first straight rack, and the half gear and the fifth rotating shaft will rotate. The fifth rotating shaft drives the fixed shaft and the sponge block to rotate, so that the sponge block just rotates 180 degrees to face upward, and the electric telescopic rod continues to drive the sponge block to move upward, so that the sponge block extends into the lowest screw sleeve to apply lubricating oil to the inside of the screw sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic cross-sectional view of the housing in the present invention;

[0020] Figure 3 It is a schematic diagram of a first partial three-dimensional structure in the present invention;

[0021] Figure 4 It is a schematic diagram of the separation structure of the nut and the annular plate in the present invention;

[0022] Figure 5 It is a cross-sectional schematic diagram of the first rotating shaft and the second rotating shaft in the present invention;

[0023] Figure 6 It is a schematic diagram of a second partial three-dimensional structure in the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the third circular gear and the fourth circular gear in the present invention;

[0025] Figure 8 It is a schematic diagram of the separation structure of the first rotating shaft and the second rotating shaft in the present invention;

[0026] Fig. 9 It is a schematic diagram of a third partial three-dimensional structure in the present invention;

[0027] Fig.10 It is a schematic diagram of the fourth partial three-dimensional structure in the present invention.

[0028] In the figure:

[0029] 1. Housing; 2. Drive assembly; 3. Rotating shaft; 4. Torque sensor; 5. First pressure sensor; 6. Connecting sleeve; 7. Screw sleeve; 8. First motor; 9. First circular gear; 10. First rotating shaft; 11. Second circular gear; 12. Second rotating shaft; 13. Threaded column; 14. Sleeve; 15. Moving column; 16. Connecting ball; 17. Connecting block; 18. Annular plate; 19. Spring; 20. Connecting box; 21. Support plate; 22. Arc plate; 23. Arc rack; 24. Third circular gear; 25. Third rotating shaft; 26. Fourth rotating shaft; 27. Bevel gear; 28. Fourth circular gear; 29. ​​First electric push rod; 30. Moving plate; 3 1. Connecting arc plate; 32. Rubber pad; 33. Connecting rod; 34. Connecting ring; 35. Rotating ring; 36. Connecting block; 37. Hexagonal prism; 38. Hexagonal groove; 39. Connecting column; 40. Inserting column; 41. L-shaped arc plate; 42. Inserting hole; 43. Fixed column; 44. Rotating sleeve; 45. Connecting column; 46. Gear ring; 47. Second motor; 48. Fifth circular gear; 49. Electric telescopic rod; 50. U-shaped plate; 51. Fifth rotating shaft; 52. Rubber ring; 53. Fixed shaft; 54. Sponge block; 55. Half gear; 56. First straight rack; 57. Second electric push rod; 58. Second straight rack; 59. Gear sleeve; 60. Second pressure sensor. DETAILED DESCRIPTION

[0030] 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.

[0031] Reference Figure 1 - Fig.10 A bolt axial force torque tester comprises a housing 1, a driving assembly 2 is fixedly connected to the housing 1 through a bracket plate, a rotating shaft 3 is arranged at the output end of the driving assembly 2, a torque sensor 4 is arranged in the middle of the rotating shaft 3, a first pressure sensor 5 is fixedly connected to the bottom end of the rotating shaft 3, a connecting sleeve 6 for clamping the bolt to be tested is fixedly connected to the bottom of the first pressure sensor 5, and further comprises:

[0032] A plurality of screw sleeves 7, the top screw sleeve 7 is located directly below the bolt to be tested, and a thrust assembly is provided on one side of the screw sleeve 7, the thrust assembly is used to apply a horizontal thrust to the screw sleeve 7, and an angle adjustment assembly is provided on the housing 1, the angle adjustment assembly is used to adjust the direction in which the thrust assembly applies the thrust to the screw sleeve 7;

[0033] A coating component is arranged at the bottom of the housing 1 and is located directly below the bottom screw sleeve 7. The coating component is used to apply lubricating material to the bottom screw sleeve 7;

[0034] During use, the bolt to be tested is set in the connecting sleeve 6, and the driving component 2 is started. The driving component 2 drives the bolt to be tested to move downward. When the bolt to be tested is about to enter the screw sleeve 7, the driving component 2 rotates the bolt to be tested and moves downward, and screws the bolt to be tested into the screw sleeve 7. During the process of screwing into the screw sleeve 7, the axial force can be measured by the first pressure sensor 5, and the torque can be measured by the torque sensor 4. When it is necessary to test the axial force and torque under the condition of horizontal thrust of the screw sleeve 7, during the process of screwing the bolt to be tested into the screw sleeve 7, a horizontal thrust is applied to the screw sleeve 7 by the thrust component, and the axial force and torque are measured. The angle of the thrust component can also be adjusted by the angle adjustment component to tilt the thrust acting on the screw sleeve 7, so that the axial force and torque under different conditions can be measured. By setting a coating component, lubricating oil is coated in the screw sleeve 7, and the axial force and torque in this case are measured, so as to evaluate the influence of lubrication conditions on the axial force and torque of the bolt.

[0035] Reference Figure 3 , Figure 4 and Figure 5The thrust assembly includes a first motor 8, the output shaft of the first motor 8 is fixedly connected to a first circular gear 9, a first rotating shaft 10 and a second rotating shaft 12 are arranged on one side of the first motor 8, one end of the first rotating shaft 10 is rotatably connected to one end of the second rotating shaft 12, the other end of the first rotating shaft 10 is fixedly connected to a second circular gear 11 meshing with the first circular gear 9, a threaded column 13 is internally threadedly connected to the second rotating shaft 12, one end of the threaded column 13 is rotatably connected to a sleeve 14, a moving column 15 is slidably inserted in the sleeve 14, one end of the moving column 15 is fixedly connected to a connecting ball 16, one end of the moving column 15 is provided with a connecting block 17, a second pressure sensor 60 in contact with one of the screw sleeves 7 is fixedly connected to the connecting block 17, the connecting ball 16 is universally rotated in the connecting block 17, an annular plate 18 is sleeved on the outer side of the screw sleeve 7, a spring 19 is fixedly connected between the inner wall of the annular plate 18 and the screw sleeve 7; in the process of the bolt to be tested being screwed into the screw sleeve 7, When it is necessary to apply horizontal thrust to the screw sleeve 7, the first motor 8 is started, the first motor 8 drives the first circular gear 9 to rotate, the first circular gear 9 drives the second circular gear 11 to rotate, the second circular gear 11 drives the first rotating shaft 10 to rotate, the first rotating shaft 10 drives the second rotating shaft 12 to rotate, the rotation of the second rotating shaft 12 can make the threaded column 13 extend out of the second rotating shaft 12, the threaded column 13 drives the sleeve 14 to move, the movement of the sleeve 14 can make the moving column 15 gradually enter the sleeve 14 until one end of the moving column 15 is against the inner wall of the sleeve 14, the sleeve 14 continues to move forward to apply pressure to the moving column 15, the moving column 15 applies pressure to the connecting block 17 through the connecting ball 16, the connecting block 17 applies horizontal thrust to the screw sleeve 7 through the second pressure sensor 60, the second pressure sensor 60 can measure the size of the specific thrust, by providing the annular plate 18, there is no restriction on the screw sleeve 7 in the horizontal direction, so that the thrust can effectively act on the screw sleeve 7, and the spring 19 can keep the screw sleeve 7 on the other side of the annular plate 18 at all times.

[0036] Reference Figure 3 , Figure 4 , Figure 6 and Figure 7The angle adjustment assembly includes a connection box 20 arranged below the first motor 8, a support plate 21 rotatably connected to the first rotating shaft 10 and the second rotating shaft 12 is fixedly connected to the connection box 20, one end of the threaded column 13 is fixedly connected to an L-shaped telescopic rod fixedly connected to the support plate 21, an arc plate 22 is fixedly connected to the inner wall of the housing 1 through a mounting column, an arc rack 23 passing through the connection box 20 is fixedly connected to the arc plate 22, a third circular gear 24 located in the connection box 20 is meshed on one side of the arc rack 23, a third rotating shaft 25 rotatably connected to the connection box 20 is fixedly connected to the middle of the third circular gear 24, a fourth rotating shaft 26 is rotatably connected to the connection box 20, one end of the fourth rotating shaft 26 and The outer wall of the third rotating shaft 25 is fixedly connected with a bevel gear 27 that meshes with each other, and the other end of the fourth rotating shaft 26 is fixedly connected with a fourth circular gear 28. A first electric push rod 29 is fixedly connected in the connecting box 20, and the output end of the first electric push rod 29 is fixedly connected with a moving plate 30 that is slidably connected to the connecting box 20, and the moving plate 30 is fixedly connected to the first motor 8. The outer wall of the screw sleeve 7 is fixedly connected with a connecting arc plate 31, and the connecting block 17 is located between two connecting arc plates 31. Two rubber pads 32 are fixedly connected to the screw sleeve 7, and the two rubber pads 32 are respectively in contact with the top and bottom of the annular plate 18; when it is necessary to adjust the thrust direction of the thrust assembly on the screw sleeve 7, the first electric push rod 29 is started, and the first electric push rod 29 is started. The rod 29 drives the first motor 8 to move on the connecting box 20 through the moving plate 30, and the first motor 8 drives the first circular gear 9 to move until the first circular gear 9 is meshed with the fourth circular gear 28, and the first motor 8 is started. The first motor 8 drives the fourth rotating shaft 26 to rotate through the first circular gear 9 and the fourth circular gear 28, and the fourth rotating shaft 26 drives the third rotating shaft 25 to rotate through two bevel gears 27, and the third rotating shaft 25 drives the third circular gear 24 to rotate. The third circular gear 24 moves on the arc rack 23, thereby driving the connecting box 20 and the first motor 8 to move along the arc rack 23, and the walking trajectory of the connecting box 20 and the first motor 8 is an arc, and the center of the arc is the connecting ball 16, that is, the connecting box 20 and the first motor 8 revolve around As the connecting ball 16 moves, the connecting ball 16 rotates in the connecting block 17. When the connecting box 20 and the first motor 8 move to the appropriate position, the moving column 15 is at a certain angle to the horizontal plane. The first motor 8 is driven to reset by the first electric push rod 29, so that the first circular gear 9 is re-engaged with the second circular gear 11, and the first motor 8 is started. The first motor 8 can connect the ball 16 and the connecting block 17 to apply thrust to the screw sleeve 7. The direction of the thrust is at a certain angle to the horizontal plane along the direction of the moving column 15. The connecting block 17 can transmit the oblique thrust to the screw sleeve 7 through the connecting arc plate 31. By setting two rubber pads 32, the screw sleeve 7 can have movable space in the vertical direction to prevent the oblique thrust from failing to effectively act on the screw sleeve 7.

[0037] Reference Figure 5 and Figure 8The first motor 8 is fixedly connected with a connecting rod 33, one end of the connecting rod 33 is fixedly connected with a connecting ring 34, the inner wall of the connecting ring 34 is rotatably connected with a rotating ring 35, the rotating ring 35 is fixedly connected with a connecting block 36 slidably connected to the first rotating shaft 10, one end of the connecting block 36 is fixedly connected with a hexagonal prism 37 slidably inserted at one end of the first rotating shaft 10, one end of the second rotating shaft 12 is fixedly connected with a hexagonal groove 38, the hexagonal prism 37 is inserted in the hexagonal groove 38; when the first motor 8 drives the first rotating shaft 10 to drive the second rotating shaft 12 to rotate, the first rotating shaft 10 can drive the second rotating shaft 12 to rotate only through the cooperation of the hexagonal prism 37 and the hexagonal groove 38, when the thrust angle needs to be adjusted, the first motor 8 is driven to move through the first electric push rod 29, the first motor 8 can drive the connecting ring 34 to move through the connecting rod 33, and the connecting ring 34 can rotate The ring 35 and the connecting block 36 drive the hexagonal prism 37 to move, so that the hexagonal prism 37 leaves the hexagonal groove 38 and enters the first rotating shaft 10, so that the first rotating shaft 10 and the second rotating shaft 12 can rotate freely. Due to the lack of the first circular gear 9 to restrict the second circular gear 11 and the first rotating shaft 10, the first rotating shaft 10 and the second circular gear 11 may rotate at will. The free rotation between the first rotating shaft 10 and the second rotating shaft 12 can prevent the first rotating shaft 10 from driving the second rotating shaft 12 to rotate, thereby preventing the moving column 15 from applying pressure to the screw sleeve 7. The rotation of the first rotating shaft 10 drives the hexagonal prism 37 to rotate, and the hexagonal prism 37 drives the rotating ring 35 to rotate in the connecting ring 34 through the connecting block 36. When the angle adjustment is completed, the first motor 8 is driven to reset by the first electric push rod 29, and the hexagonal prism 37 is reinserted into the hexagonal groove 38, so that the first rotating shaft 10 can continue to drive the second rotating shaft 12 to rotate.

[0038] Reference Figure 3 and Figure 6 , two connecting columns 39 are fixedly connected to the first motor 8, one end of the connecting column 39 is fixedly connected to a plug column 40, and two L-shaped arc plates 41 are fixedly connected to the arc plate 22, and a plurality of plug holes 42 are opened on the L-shaped arc plate 41, and the plug column 40 is inserted into the corresponding plug hole 42; when the thrust angle needs to be adjusted, the first electric push rod 29 is started to drive the first motor 8 to move, and the first motor 8 can drive the plug column 40 to move through the connecting column 39, so that the plug column 40 leaves the plug hole 42, at this time, the first circular gear 9 just meshes with the fourth circular gear 28, and the first motor 8 is started to drive the connection box 20 and the first motor 8 to move on the arc rack 23. After moving to the appropriate position, the first motor 8 is driven to reset by the first electric push rod 29, and the first motor 8 drives the plug column 40 to be inserted into the corresponding plug hole 42 through the connecting column 39, so as to lock and limit the connection box 20 and the first motor 8.

[0039] Reference Figure 2 and Fig. 9, the housing 1 is provided with a switching assembly for switching different screw sleeves 7, the switching assembly includes a fixed column 43 rotatably connected to the inner wall of the housing 1, the outer wall of the fixed column 43 is rotatably connected to a rotating sleeve 44, a plurality of connecting columns 45 are fixedly connected to the rotating sleeve 44, one end of the connecting column 45 is respectively fixedly connected to the corresponding annular plate 18, a gear ring 46 is fixedly connected to the outer wall of the rotating sleeve 44, a second motor 47 is fixedly connected to the fixed column 43 through a mounting block, and the output shaft of the second motor 47 is fixedly connected to a fifth circular gear 48 meshing with the gear ring 46; the screw sleeves 7 in the housing 1 are all made of different materials, which can be measured by The bolt is matched with the threaded sleeve 7 of different materials to evaluate the influence of the threaded sleeve 7 of different materials on the axial force pitch and connection performance of the bolt. When it is necessary to replace the threaded sleeve 7 of different materials for testing, the second motor 47 is started, and the second motor 47 drives the fifth circular gear 48 to rotate, and the fifth circular gear 48 drives the gear ring 46 to rotate, and the gear ring 46 drives the rotating sleeve 44 to rotate on the surface of the fixed column 43, and the rotating sleeve 44 drives the annular plate 18 to rotate through the connecting column 45, and the annular plate 18 drives the threaded sleeve 7 to rotate, so that the threaded sleeve 7 of different materials faces directly upward and is located directly below the bolt to be tested, thereby achieving the purpose of switching threaded sleeves 7 of different materials.

[0040] Reference Figure 2 and Fig.10The smearing assembly includes an electric telescopic rod 49 fixedly connected to the inner wall of the bottom of the shell 1, the output end of the electric telescopic rod 49 is fixedly connected to a U-shaped plate 50, a fifth rotating shaft 51 is rotatably connected to the U-shaped plate 50, one end of the fifth rotating shaft 51 is fixedly connected to a rubber ring 52 in contact with the U-shaped plate 50, the outer wall of the fifth rotating shaft 51 is rotatably connected to a fixed shaft 53, the outer wall of the fixed shaft 53 is fixedly connected to a sponge block 54, the bottom inner wall of the shell 1 is fixedly connected to a storage bucket, the storage bucket is filled with lubricating oil, and the sponge block 54 is located in the storage bucket, the outer wall of the fifth rotating shaft 51 is fixedly connected to a half gear 55, the bottom inner wall of the shell 1 is fixedly connected to a first straight rack 56 through an L-shaped column, and the teeth of the first straight rack 56 are located directly above the rightmost teeth of the half gear 55; when it is necessary to apply lubricating oil to the screw sleeve 7, the electric telescopic rod 49 is started, and the electric telescopic rod 49 drives the U-shaped plate 50 upward The sponge block 54 is moved upward by the U-shaped plate 50. The sponge block 54 absorbs lubricating oil in the storage barrel. The fifth rotating shaft 51 drives the half gear 55 to move upward. When the sponge block 54 completely leaves the storage barrel, the half gear 55 meshes with the first straight rack 56. The half gear 55 drives the fifth rotating shaft 51, the fixed shaft 53 and the sponge block 54 to rotate. When the half gear 55 completely passes through the first straight rack 56, the fixed shaft 53 and the sponge block 54 rotate exactly one hundred and eighty degrees. The sponge block 54 is aligned with the inside of the screw sleeve 7 directly below, and the sponge block 54 continues to move upward, so that the sponge block 54 can enter the inside of the screw sleeve 7 and apply lubricating oil to the inside of the screw sleeve 7. After the application is completed, the sponge block 54 is driven back into the storage barrel by the electric telescopic rod 49. The fifth rotating shaft 51 can be prevented from rotating at will by setting the rubber ring 52, thereby preventing the sponge block 54 from rotating at will.

[0041] Reference Fig.10 A second electric push rod 57 is fixedly connected to the inner wall of the shell 1, and a second spur rack 58 is fixedly connected to the output end of the second electric push rod 57, and a gear sleeve 59 is fixedly connected to the outer wall of the fixed shaft 53; when the sponge block 54 enters the screw sleeve 7 for smearing, the second electric push rod 57 is started to drive the second spur rack 58 to move, and the second spur rack 58 can engage with the gear sleeve 59. The movement of the second spur rack 58 drives the gear sleeve 59 to rotate, and the gear sleeve 59 drives the fixed shaft 53 to rotate on the fifth rotating shaft 51, and the fixed shaft 53 drives the sponge block 54 to rotate inside the screw sleeve 7, so that the lubricating oil is applied more evenly.

[0042] Working principle: the bolt to be tested is set in the connecting sleeve 6, and the driving component 2 is started. The driving component 2 drives the bolt to be tested to move downward. When the bolt to be tested is about to enter the screw sleeve 7, the driving component 2 rotates the bolt to be tested and moves downward, and screws the bolt to be tested into the screw sleeve 7. In the process of screwing into the screw sleeve 7, the axial force can be measured by the first pressure sensor 5, and the torque can be measured by the torque sensor 4. When it is necessary to test the axial force and torque under the condition of horizontal thrust of the screw sleeve 7, in the process of screwing the bolt to be tested into the screw sleeve 7, a horizontal thrust is applied to the screw sleeve 7 by the thrust component, and the axial force and torque are measured. The angle of the thrust component can also be adjusted by the angle adjustment component to tilt the thrust acting on the screw sleeve 7, so that the axial force and torque under different conditions can be measured. By setting a coating component, lubricating oil is coated in the screw sleeve 7, and the axial force and torque in this case are measured, so as to evaluate the influence of lubrication conditions on the axial force and torque of the bolt;

[0043] When the bolt to be tested is screwed into the screw sleeve 7, when it is necessary to apply a horizontal thrust to the screw sleeve 7, the first motor 8 is started, the first motor 8 drives the first circular gear 9 to rotate, the first circular gear 9 drives the second circular gear 11 to rotate, the second circular gear 11 drives the first rotating shaft 10 to rotate, the first rotating shaft 10 drives the second rotating shaft 12 to rotate, the rotation of the second rotating shaft 12 can make the threaded column 13 extend out of the second rotating shaft 12, the threaded column 13 drives the sleeve 14 to move, the movement of the sleeve 14 can make the movable column 15 gradually enter the sleeve 14 until the movable column 15 moves. One end of the column 15 abuts against the inner wall of the sleeve 14, and the sleeve 14 continues to move forward to apply pressure to the movable column 15, and the movable column 15 applies pressure to the connecting block 17 through the connecting ball 16, and the connecting block 17 applies horizontal thrust to the screw sleeve 7 through the second pressure sensor 60. The second pressure sensor 60 can measure the size of the specific thrust. By setting the annular plate 18, there is no restriction on the screw sleeve 7 in the horizontal direction, so that the thrust can effectively act on the screw sleeve 7, and the spring 19 can keep the screw sleeve 7 on the other side of the annular plate 18 at all times;

[0044] When it is necessary to adjust the thrust direction of the thrust assembly on the screw sleeve 7, start the first electric push rod 29, the first electric push rod 29 drives the first motor 8 to move on the connecting box 20 through the moving plate 30, the first motor 8 drives the first circular gear 9 to move, until the first circular gear 9 is meshed with the fourth circular gear 28, start the first motor 8, the first motor 8 drives the fourth rotating shaft 26 to rotate through the first circular gear 9 and the fourth circular gear 28, the fourth rotating shaft 26 drives the third rotating shaft 25 to rotate through two bevel gears 27, the third rotating shaft 25 drives the third circular gear 24 to rotate, the third circular gear 24 moves on the arc rack 23, thereby driving the connecting box 20 and the first motor 8 to move along the arc rack 23, and the walking trajectory of the connecting box 20 and the first motor 8 is an arc, the center of the arc is the connecting box 20. The connecting ball 16, that is, the connecting box 20 and the first motor 8 move around the connecting ball 16, and the connecting ball 16 rotates in the connecting block 17. When the connecting box 20 and the first motor 8 move to a suitable position, the moving column 15 is at a certain angle to the horizontal plane. The first motor 8 is driven to reset by the first electric push rod 29, so that the first circular gear 9 is meshed with the second circular gear 11 again, and the first motor 8 is started. The first motor 8 can connect the ball 16 and the connecting block 17 to apply a thrust to the screw sleeve 7. The direction of the thrust is at a certain angle to the horizontal plane along the direction of the moving column 15. The connecting block 17 can transmit the oblique thrust to the screw sleeve 7 through the connecting arc plate 31. By setting two rubber pads 32, the screw sleeve 7 can have a movable space in the vertical direction to prevent the oblique thrust from being unable to effectively act on the screw sleeve 7.

[0045] When the first motor 8 drives the first rotating shaft 10 to drive the second rotating shaft 12 to rotate, the first rotating shaft 10 can drive the second rotating shaft 12 to rotate through the cooperation of the hexagonal prism 37 and the hexagonal groove 38. When the thrust angle needs to be adjusted, the first motor 8 is driven to move through the first electric push rod 29, and the first motor 8 can drive the connecting ring 34 to move through the connecting rod 33. The connecting ring 34 drives the hexagonal prism 37 to move through the rotating ring 35 and the connecting block 36, so that the hexagonal prism 37 leaves the hexagonal groove 38 and enters the first rotating shaft 10, so that the first rotating shaft 10 and the second rotating shaft 12 can rotate freely. Due to the lack of the first round gear 9 to the second round gear The first rotating shaft 10 and the first rotating shaft 10 are restricted, and the first rotating shaft 10 and the second circular gear 11 may rotate at will. The free rotation between the first rotating shaft 10 and the second rotating shaft 12 can prevent the first rotating shaft 10 from driving the second rotating shaft 12 to rotate, thereby preventing the moving column 15 from applying pressure to the screw sleeve 7. The rotation of the first rotating shaft 10 drives the hexagonal prism 37 to rotate, and the hexagonal prism 37 drives the rotating ring 35 to rotate in the connecting ring 34 through the connecting block 36. When the angle adjustment is completed, the first motor 8 is driven to reset through the first electric push rod 29, and the hexagonal prism 37 is reinserted into the hexagonal groove 38, so that the first rotating shaft 10 can continue to drive the second rotating shaft 12 to rotate;

[0046] When the thrust angle needs to be adjusted, the first electric push rod 29 is started to drive the first motor 8 to move. The first motor 8 can drive the plug column 40 to move through the connecting column 39, so that the plug column 40 leaves the plug hole 42. At this time, the first circular gear 9 is just meshed with the fourth circular gear 28. The first motor 8 is started to drive the connection box 20 and the first motor 8 to move on the arc-shaped rack 23. After moving to a suitable position, the first motor 8 is reset by the first electric push rod 29. The first motor 8 drives the plug column 40 to be inserted into the corresponding plug hole 42 through the connecting column 39, so as to lock and limit the connection box 20 and the first motor 8.

[0047] The screw sleeves 7 in the housing 1 are all made of different materials. The influence of screw sleeves 7 of different materials on the axial force pitch and connection performance of the bolt can be evaluated by matching the tested bolt with the screw sleeves 7 of different materials. When it is necessary to replace the screw sleeves 7 of different materials for testing, the second motor 47 is started, the second motor 47 drives the fifth circular gear 48 to rotate, the fifth circular gear 48 drives the gear ring 46 to rotate, the gear ring 46 drives the rotating sleeve 44 to rotate on the surface of the fixed column 43, the rotating sleeve 44 drives the annular plate 18 to rotate through the connecting column 45, and the annular plate 18 drives the screw sleeve 7 to rotate, so that the screw sleeves 7 of different materials face directly upward and are located directly below the bolt to be tested, so as to achieve the purpose of switching screw sleeves 7 of different materials;

[0048] When it is necessary to apply lubricating oil to the screw sleeve 7, the electric telescopic rod 49 is started, and the electric telescopic rod 49 drives the U-shaped plate 50 to move upward, and the U-shaped plate 50 drives the fifth rotating shaft 51, the fixed shaft 53 and the sponge block 54 to move upward, and the sponge block 54 absorbs lubricating oil in the storage barrel, and the fifth rotating shaft 51 drives the half gear 55 to move upward. When the sponge block 54 completely leaves the storage barrel, the half gear 55 meshes with the first straight rack 56, and the half gear 55 drives the fifth rotating shaft 51, the fixed shaft 53 and the sponge block 54 to rotate. After the half gear 55 completely passes through the first straight rack 56, the fixed shaft 53 and the sponge block 54 rotate exactly 180 degrees, and the sponge block 54 faces upward and is aligned with the inside of the screw sleeve 7 directly below. The sponge block 54 continues to move upward, so that the sponge block 54 can enter the inside of the screw sleeve 7 and apply lubricating oil to the inside of the screw sleeve 7. After the application is completed, the sponge block 54 is driven back to the storage barrel by the electric telescopic rod 49. The fifth rotating shaft 51 can be prevented from rotating at will by setting the rubber ring 52, thereby preventing the sponge block 54 from rotating at will;

[0049] When the sponge block 54 enters the screw sleeve 7 for smearing, the second electric push rod 57 is started to drive the second spur rack 58 to move. The second spur rack 58 can engage with the gear sleeve 59. The movement of the second spur rack 58 drives the gear sleeve 59 to rotate. The gear sleeve 59 drives the fixed shaft 53 to rotate on the fifth rotating shaft 51. The fixed shaft 53 drives the sponge block 54 to rotate inside the screw sleeve 7, so that the lubricating oil is applied more evenly.

[0050] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0051] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bolt axial force torque tester, comprising a housing (1), a driving assembly (2) being fixedly connected to the housing (1) via a bracket plate, a rotating shaft (3) being arranged at the output end of the driving assembly (2), a torque sensor (4) being arranged at the middle of the rotating shaft (3), a first pressure sensor (5) being fixedly connected to the bottom end of the rotating shaft (3), a connecting sleeve (6) for clamping a bolt to be tested being fixedly connected to the bottom of the first pressure sensor (5), characterized in that: Also includes: A plurality of screw sleeves (7), the topmost screw sleeve (7) being located directly below the bolt to be tested, and a thrust assembly being provided on one side of the screw sleeve (7), the thrust assembly being used to apply a horizontal thrust to the screw sleeve (7), and an angle adjustment assembly being provided on the housing (1), the angle adjustment assembly being used to adjust the direction in which the thrust assembly applies the thrust to the screw sleeve (7); A coating component, the coating component is arranged at the bottom of the housing (1) and is located directly below the bottom screw sleeve (7), and the coating component is used to apply a lubricating substance to the bottom screw sleeve (7); The thrust assembly comprises a first motor (8), the output shaft of the first motor (8) is fixedly connected to a first circular gear (9), a first rotating shaft (10) and a second rotating shaft (12) are arranged on one side of the first motor (8), one end of the first rotating shaft (10) is rotatably connected to one end of the second rotating shaft (12), the other end of the first rotating shaft (10) is fixedly connected to a second circular gear (11) meshing with the first circular gear (9), the second rotating shaft (12) is internally threadedly connected to a threaded column (13), one end of the threaded column (13) is rotatably connected to a sleeve (14), and the sleeve (14) is slidable therein. A movable column (15) is inserted, one end of the movable column (15) is fixedly connected to a connecting ball (16), one end of the movable column (15) is provided with a connecting block (17), a second pressure sensor (60) in contact with one of the screw sleeves (7) is fixedly connected to the connecting block (17), the connecting ball (16) is universally rotatable in the connecting block (17), an annular plate (18) is sleeved on the outer side of the screw sleeve (7), a spring (19) is fixedly connected between the inner wall of the annular plate (18) and the screw sleeve (7), and one end of the threaded column (13) is fixedly connected to an L-shaped telescopic rod fixedly connected to the support plate (21).

2. The bolt axial force torque testing machine according to claim 1, characterized in that: The angle adjustment assembly comprises a connection box (20) arranged below the first motor (8); a support plate (21) is fixedly connected to the connection box (20) and is rotatably connected to the first rotating shaft (10) and the second rotating shaft (12); an arc plate (22) is fixedly connected to the inner wall of the housing (1) via a mounting column; an arc rack (23) is fixedly connected to the arc plate (22) and passes through the connection box (20); a third circular gear (24) located in the connection box (20) is meshed with one side of the arc rack (23); a third rotating shaft (25) rotatably connected to the connection box (20) is fixedly connected to the middle of the third circular gear (24); a fourth rotating shaft (26) is rotatably connected to the connection box (20); the fourth rotating shaft (26) One end of the third rotating shaft (25) and the outer wall of the third rotating shaft (25) are fixedly connected with a bevel gear (27) that meshes with each other, the other end of the fourth rotating shaft (26) is fixedly connected with a fourth circular gear (28), a first electric push rod (29) is fixedly connected in the connecting box (20), an output end of the first electric push rod (29) is fixedly connected with a moving plate (30) that is slidably connected to the connecting box (20), the moving plate (30) is fixedly connected to the first motor (8), the outer walls of the screw sleeve (7) are fixedly connected with connecting arc plates (31), the connecting block (17) is located between two connecting arc plates (31), and two rubber pads (32) are fixedly connected to the screw sleeve (7), and the two rubber pads (32) are respectively in contact with the top and bottom of the annular plate (18).

3. The bolt axial force torque testing machine according to claim 2, characterized in that: The first motor (8) is fixedly connected to a connecting rod (33), one end of the connecting rod (33) is fixedly connected to a connecting ring (34), the inner wall of the connecting ring (34) is rotatably connected to a rotating ring (35), the rotating ring (35) is fixedly connected to a connecting block (36) slidably connected to the first rotating shaft (10), one end of the connecting block (36) is fixedly connected to a hexagonal prism (37) slidably inserted into one end of the first rotating shaft (10), and one end of the second rotating shaft (12) is fixedly connected to a hexagonal groove (38), and the hexagonal prism (37) is inserted into the hexagonal groove (38).

4. The bolt axial force torque testing machine according to claim 3, characterized in that: The first motor (8) is fixedly connected to two connection columns (39), one end of the connection column (39) is fixedly connected to an insertion column (40), the arc plate (22) is fixedly connected to two L-shaped arc plates (41), the L-shaped arc plate (41) is provided with a plurality of insertion holes (42), and the insertion columns (40) are inserted into corresponding insertion holes (42).

5. The bolt axial force torque testing machine according to claim 4, characterized in that: A switching assembly for switching different screw sleeves (7) is provided in the housing (1), the switching assembly comprising a fixed column (43) rotatably connected to the inner wall of the housing (1), the outer wall of the fixed column (43) being rotatably connected to a rotating sleeve (44), a plurality of connecting columns (45) being fixedly connected to the rotating sleeve (44), one end of each connecting column (45) being fixedly connected to a corresponding annular plate (18), a gear ring (46) being fixedly connected to the outer wall of the rotating sleeve (44), a second motor (47) being fixedly connected to the fixed column (43) via a mounting block, and an output shaft of the second motor (47) being fixedly connected to a fifth circular gear (48) meshing with the gear ring (46).

6. The bolt axial force torque testing machine according to claim 5, characterized in that: The smearing assembly comprises an electric telescopic rod (49) fixedly connected to the inner wall of the bottom of the housing (1); the output end of the electric telescopic rod (49) is fixedly connected to a U-shaped plate (50); a fifth rotating shaft (51) is rotatably connected to the U-shaped plate (50); one end of the fifth rotating shaft (51) is fixedly connected to a rubber ring (52) in contact with the U-shaped plate (50); an outer wall of the fifth rotating shaft (51) is rotatably connected to a fixed shaft (53); a sponge block (54) is fixedly connected to the outer wall of the fixed shaft (53); a storage barrel is fixedly connected to the inner wall of the bottom of the housing (1); the storage barrel is filled with lubricating oil, and the sponge block (54) is located in the storage barrel; a half gear (55) is fixedly connected to the outer wall of the fifth rotating shaft (51); and a first spur rack (56) is fixedly connected to the inner wall of the bottom of the housing (1) via an L-shaped column; the teeth of the first spur rack (56) are located directly above the rightmost teeth of the half gear (55).

7. The bolt axial force torque testing machine according to claim 6, characterized in that: A second electric push rod (57) is fixedly connected to the inner wall of the housing (1), a second spur rack (58) is fixedly connected to the output end of the second electric push rod (57), and a gear sleeve (59) is fixedly connected to the outer wall of the fixed shaft (53).

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