CN215894262U - Torque coefficient testing machine for torsional shear type bolt - Google Patents
Torque coefficient testing machine for torsional shear type bolt Download PDFInfo
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- CN215894262U CN215894262U CN202121883759.0U CN202121883759U CN215894262U CN 215894262 U CN215894262 U CN 215894262U CN 202121883759 U CN202121883759 U CN 202121883759U CN 215894262 U CN215894262 U CN 215894262U
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Abstract
The utility model discloses a torque coefficient testing machine for torsional shear type bolts, which comprises a base, wherein the top of the base is sequentially provided with an adapter plate, a sliding plate and a mounting frame arranged on the outer side of the adapter plate, the mounting frame adopts a U-shaped structure with an opening at the front, a planetary gear speed reducer is arranged on the outer side of one end, close to the adapter plate, of the mounting frame, a servo motor is arranged at one end, far away from the mounting frame, of the planetary gear speed reducer, a main shaft reversing mechanism is arranged above the adapter plate, and one side, far away from the sliding plate, of the main shaft reversing mechanism is provided with an anti-rotating device for limiting the rotation of a torsional shear type bolt sample; the test method of the torsional shear type high-strength bolt connection pair for the steel structure by the national fastener standardization technical committee is met.
Description
Technical Field
The utility model belongs to the technical field of detection of torsional shear type high-strength bolt connection pairs for steel structures, and particularly relates to a torque coefficient testing machine for torsional shear type bolts.
Background
The 'GB/T3632-2008 torsion shear type high-strength bolt connecting pair for the steel structure' is a torsion shear type high-strength bolt connecting pair suitable for industrial and civil buildings, bridges, tower mast structures, boiler steel structures, hoisting machinery and other steel structures. When the bolt connecting pair is used, a small head needs to be fixed, and the assembly is finished when the nut is rotated until the small head is broken. The important index for detecting whether the torsional shear type high-strength bolt connection pair for the steel structure is qualified is a clamping force value generated between a bolt and a nut and a torque value applied to the nut at the moment when the small end is broken.
When the torsional shear type high-strength bolt connection pair for the steel structure is detected at present, one method is to fix a nut and rotate a small head of the bolt to break the bolt to determine a corresponding clamping force value and torque, which is abandoned by a file of 'national tightening standard committee secret word (2019) No. 003' issued by 'national fastener standardization technical committee'; the second method is that a tester rotates a hollow socket torque wrench by hand to apply torque to a nut sample, an external rotation-proof device limits a small head of a torsional shear type bolt to prevent the small head from rotating, and a clamping force value and torque which are measured by an axial force load sensor combination.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a torque coefficient testing machine for a torsional shear type bolt.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a torque coefficient testing machine for torsional shear type bolts comprises a base, wherein an adapter plate, a sliding plate and a mounting frame arranged on the outer side of the adapter plate and the sliding plate are sequentially arranged at the top of the base, the mounting frame is of a U-shaped structure with an opening in the front face, a planetary gear speed reducer is arranged on the outer side of one end, close to the adapter plate, of the mounting frame, a servo motor is arranged at one end, away from the mounting frame, of the planetary gear speed reducer, a main shaft reversing mechanism is arranged above the adapter plate, and an anti-rotating device is arranged on one side, away from the sliding plate, of the main shaft reversing mechanism and used for limiting rotation of a torsional shear type bolt sample;
the slide top is provided with load cell, the slide with be provided with the location direction key between the load cell, load cell is close to one side of anti-rotating device is provided with the mounting panel, load cell keeps away from one side of anti-rotating device is provided with No. two anti-rotating plates, the mounting panel outside is provided with the panel, the panel outside is provided with the hard backing plate for provide the loading end for the sample nut, the sample nut top spin has connect the sample bolt.
Preferably, a T-shaped sleeve is arranged at the center of the load sensor and comprises a transverse end and a vertical end, the fixed end of the sample bolt is clamped in the vertical end, an inner sleeve and an outer sleeve are arranged on the outer side of the transverse end of the T-shaped sleeve, a needle roller bearing without an inner ring is arranged in the load sensor, a hub inner support sleeve is arranged in the needle roller bearing without the inner ring, a cylindrical thrust roller bearing is arranged in the hub inner support sleeve, and the cylindrical thrust roller bearing is completely attached to the bearing surface of the load sensor.
Preferably, the sliding plate is connected with the base in a sliding mode, and a limiting device used for positioning is arranged on the sliding plate.
Preferably, the main shaft reversing mechanism comprises a gear box mounting seat arranged at the top of the adapter plate and a gear box arranged at the top of the gear box mounting seat.
Preferably, one side of the gear box, which is close to the planetary gear reducer, is connected with a dynamic torque sensor, and one end of the dynamic torque sensor, which is far away from the gear box, is connected with a coupler, so as to connect the planetary gear reducer with the dynamic torque sensor.
Preferably, the anti-rotation device comprises an anti-rotation part arranged on one side of the gear box mounting seat and a first anti-rotation plate used for fixing the anti-rotation part.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
according to the utility model, the small-head spline of the tested torsional shear type bolt is fixed, the tested nut is rotated to generate a clamping force between the tested nut and the tested torsional shear type bolt until the small-head spline of the tested torsional shear type bolt is partially broken, and the torque value applied to the tested nut and the clamping force generated between the tested nut and the torsional shear type bolt are measured.
The detection method realizes the consistency of the detection state of the torsional shear type high-strength bolt connection pair for the steel structure and the actual use state;
the utility model meets the test method of the national technical committee on the torsional shear type high-strength bolt connection pair for the steel structure by the fastener standardization.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a torque coefficient testing machine for torsional shear bolts according to the present invention;
FIG. 2 is a cross-sectional view of a torque coefficient testing machine for a torsional shear bolt of the present invention;
FIG. 3 is an enlarged view of the structure at the position A in the torque coefficient testing machine for the torsional shear type bolt according to the present invention;
fig. 4 is a schematic diagram of an overall structure of a torque coefficient testing machine for a torsional shear bolt according to the present invention.
Reference numerals: 1. a base; 2. a mounting frame; 3. a planetary gear reducer; 4. a servo motor; 5. a slide plate; 6. a load sensor; 7. mounting a plate; 8. a hard backing plate; 9. a panel; 10. a sample nut; 11. a sample bolt; 12. an adapter plate; 13. a gear box mounting seat; 14. a gear case; 15. a coupling; 16. a dynamic torque sensor; 17. a first rotation prevention plate; 18. an anti-rotation member; 19. a T-shaped sleeve; 20. a hub inner support sleeve; 21. A second rotation prevention plate; 22. the needle roller bearing is fully assembled without an inner ring; 23. a thrust cylindrical roller bearing; 24. positioning a guide key; 25. an inner and an outer sleeve.
Detailed Description
The following further describes a specific embodiment of a torque coefficient testing machine for a torsional shear bolt according to the present invention with reference to fig. 1. A torque coefficient testing machine for a torsional shear type bolt of the present invention is not limited to the description of the following embodiments.
Example 1:
the embodiment provides a concrete structure of a torque coefficient testing machine for torsional shear type bolts, as shown in fig. 1, the structure comprises a base 1, wherein an adapter plate 12 and a sliding plate 5 are sequentially arranged at the top of the base 1, and an installation frame 2 is arranged on the outer side of the base, the installation frame 2 adopts a U-shaped structure with an opening in the front face, a planetary gear reducer 3 is arranged on the outer side of one end, close to the adapter plate 12, of the installation frame 2, a servo motor 4 is arranged at one end, away from the installation frame 2, of the planetary gear reducer 3, a main shaft reversing mechanism is arranged above the adapter plate 12, and an anti-rotation device is arranged on one side, away from the sliding plate 5, of the main shaft reversing mechanism and used for limiting rotation of a torsional shear type bolt sample;
the top of the sliding plate 5 is provided with a load sensor 6, a positioning guide key 24 is arranged between the sliding plate 5 and the load sensor 6, one side, close to the anti-rotation device, of the load sensor 6 is provided with a mounting plate 7, one side, far away from the anti-rotation device, of the load sensor 6 is provided with a second anti-rotation plate 21, the outer side of the mounting plate 7 is provided with a panel 9, the outer side of the panel 9 is provided with a hard backing plate 8 for providing a bearing surface for a sample nut 10, and the sample nut 10 is screwed with a sample bolt 11.
The center of the load sensor 6 is provided with a T-shaped sleeve 19 which comprises a transverse end and a vertical end, the fixed end of the sample bolt 11 is clamped in the vertical end, the outer side of the transverse end of the T-shaped sleeve 19 is provided with an inner sleeve 25, the load sensor 6 is internally provided with a needle bearing 22 which is full of inner rings, the needle bearing 22 which is full of inner rings is internally provided with an inner hub supporting sleeve 20, the inner hub supporting sleeve 20 is internally provided with a cylindrical thrust roller bearing 23, and the cylindrical thrust roller bearing 23 is completely attached to the bearing surface of the load sensor 6.
The sliding plate 5 is connected with the base 1 in a sliding mode, and a limiting device used for positioning is arranged on the sliding plate 5.
The main shaft reversing mechanism comprises a gear box mounting seat 13 arranged at the top of the adapter plate 12 and a gear box 14 arranged at the top of the gear box mounting seat 13.
One side of the gear box 14 close to the planetary gear reducer 3 is connected with a dynamic torque sensor 16, and one end of the dynamic torque sensor 16 far away from the gear box 14 is connected with a coupler 15 for connecting the planetary gear reducer 3 with the dynamic torque sensor 16.
The anti-rotation device comprises an anti-rotation part 18 arranged on one side of the gear box mounting seat 13 and a first anti-rotation plate 17 used for fixing the anti-rotation part 18.
Wherein:
the servo motor 4: the power source of the testing machine provides rotation torque;
planetary gear reducer 3: amplifying the output torque of the servo motor 4;
mounting plate 7: fixing a servo motor 4 and a planetary gear reducer 3 on a base 1;
base 1: a base of the testing machine;
the coupling 15: the dynamic torque sensor is used for connecting the output shaft of the planetary gear reducer 3 with the input shaft of the dynamic torque sensor 16;
dynamic torque sensor 16: the device is used for measuring the tightening torque of the sample nut 10;
gear case 14: for converting the solid shaft of the dynamic torque sensor 16 into a hollow sleeve;
first rotation prevention plate 17: for fixing the anti-rotation member 18;
the rotation preventing member 18: the small head is used for fixing the sample bolt 11;
a hollow sleeve: for applying torque to the sample nut;
the hard shim plate 8: for the sample nut 10 to act as a bearing surface;
panel 9: for fixing the hard shim plate 8;
the load sensor 6: the clamp force measuring device is used for measuring the clamp force between the sample bolt 11 and the sample nut 10;
t-shaped sleeve 19: for giving the sample bolt 11 as a mount;
also included are the following components: the device comprises a sliding plate 5, a linear guide rail, a table board, a manual operation box, an electric control box, a control computer, test software and the like;
the torque output solid shaft is converted into the hollow sleeve to be output, the small head of the tested torsional shear type bolt penetrates through the hollow sleeve, the small head of the tested torsional shear type bolt is fixed by the aid of the anti-rotation piece, and the hollow sleeve is used for applying torque to the tested nut.
The working principle is as follows: as shown in fig. 1-3, the experimental procedure is as follows:
1. inserting a shaft of a servo motor 4 into an input coupler 15 of a planetary gear speed reducer 3, and fixing the servo motor 4 on a flange at the input end of the planetary gear speed reducer 3 by adopting a bolt;
2. fixing a mounting plate of the planetary gear reducer 3 on the base 1 by adopting bolts;
3. fixedly mounting a planetary gear reducer 3 provided with a servo motor 4 on a reducer mounting plate by adopting bolts, and positioning by utilizing a large shaft shoulder at the output end of the planetary gear reducer 3;
4. a driving key is arranged on an output shaft of the planetary gear speed reducer 3, the rigid coupler 15 is sleeved on the output shaft of the planetary gear speed reducer 3, and the coupler 15 is fixed on the output shaft of the planetary gear speed reducer 3 by adopting a 6-M12 cone end set screw;
5. installing a driving key on an input shaft of the dynamic torque sensor 16, inserting the driving key into the coupler 15, fixing the input shaft of the dynamic torque sensor 16 on the coupler 15 by adopting a 6-M12 cone end set screw, and installing the driving key on an output shaft of the dynamic torque sensor 16;
6. the adapter plate 12 and the gear box mounting seat 13 are fixed together by bolts, and then the weight ratio of the adapter plate 1: 1, the gear box 14 is fixed on the gear box mounting seat 13 by bolts;
7. the assembly formed in step 6 is placed on the base 1 and the assembly is moved so that 1: 1, sleeving a circular hole with a keyway on an output shaft of a dynamic torque sensor 16 by a gear box 14, and adjusting the ratio of 1: 1, fixing the adapter plate 12 on the base 1 by bolts according to the distance between the shaft end of the gear box 14 and the dynamic torque sensor 16;
8. fixing a positioning guide key 24 on the sliding plate 5 by adopting a bolt, clamping a sensor mounting plate 7 on the positioning guide key 24 and fixing the sensor mounting plate on the sliding plate 5 by adopting the bolt, fixing a load sensor 6 on the sensor mounting plate 7 by adopting the bolt, and installing a needle roller bearing 22 without an inner ring in the load sensor 6;
9. mounting a thrust cylindrical roller bearing 23 on the hub inner support sleeve 20, and then mounting the whole into a needle roller bearing 22 without an inner ring, so that the thrust cylindrical roller bearing 23 is completely attached to the bearing surface of the load sensor 6;
10. 4 pieces of anti-rotation pins are arranged on the hub support sleeve 20, the hub inner support sleeve 20 is rotated to enable the connection line of two blind holes on the hub inner support sleeve to be parallel to the sliding plate 5, a second anti-rotation plate 21 is clamped on a positioning guide key 24, the anti-rotation pins on the hub inner support sleeve 20 are arranged in holes of the plate, and then the anti-rotation pins are fixed on the sliding plate 5 by bolts;
11. two sets of linear guide rails are arranged on the base 1, and the two linear guide rails are required to be parallel and perpendicular to the speed reducer mounting plate;
12. fixing the assembled transmission hub assembly on a linear guide rail sliding block by adopting a bolt, and requiring the transmission hub assembly to freely move on the linear guide rail;
13. fixing a first anti-rotation plate 17 in a groove of a gear box mounting seat 13 by adopting bolts;
14. installing the sample bolt 11 into the T-shaped sleeve 19 correspondingly, and then penetrating the T-shaped sleeve 19 from the right side of the second anti-rotation plate 21 to penetrate through the inner hub supporting sleeve 20;
15. screwing a sample nut 10 on a sample bolt 11 which passes through the hard backing plate 8;
16. installing a corresponding anti-rotation part 18 into the first anti-rotation plate 17 from the left side of the first anti-rotation plate 17, and adjusting the angle of the sample bolt 11 to enable the spline of the head of the sample bolt 11 to correspond to the anti-rotation part 18;
17. installing corresponding inner and outer sleeves 25 on the sample nut 10, pushing the sliding plate 5 to enable the spline at the head of the sample bolt 11 to be completely installed in the anti-rotation part 18, and enabling the inner and outer sleeves 25 to be installed in the position 1: 1, a hexagonal hole is formed in a gear box 14;
18. such that the inner and outer jackets 25, 1: 1, the inner hexagonal hollow shaft of the gear box 14 is completely attached, and the distance between the inner sleeve 25 and the outer sleeve 25 and the hard backing plate 8 is about 1 mm;
19. clicking a test software running button, starting a test, stopping the test when the spline at the head of the sample bolt 11 is broken, manually pressing a reversing button on the manual operation box to enable the sample nut 10 to rotate anticlockwise and loosen the sample bolt 11, and finishing the test.
The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.
Claims (6)
1. The utility model provides a torque coefficient testing machine to torsional shear type bolt which characterized in that: the torsion shear bolt test bed comprises a base (1), wherein an adapter plate (12) and a sliding plate (5) are sequentially arranged at the top of the base (1), and an installation frame (2) is arranged on the outer side of the base, the front surface of the installation frame (2) is of an open U-shaped structure, a planetary gear reducer (3) is arranged on the outer side of one end, close to the adapter plate (12), of the installation frame (2), a servo motor (4) is arranged at one end, away from the installation frame (2), of the planetary gear reducer (3), a main shaft reversing mechanism is arranged above the adapter plate (12), and an anti-rotation device is arranged on one side, away from the sliding plate (5), of the main shaft reversing mechanism and used for limiting a torsion shear bolt test sample to rotate;
slide (5) top is provided with load cell (6), slide (5) with be provided with location direction key (24) between load cell (6), load cell (6) are close to one side of anti-rotating device is provided with mounting panel (7), load cell (6) are kept away from one side of anti-rotating device is provided with No. two anti-rotating plate (21), the mounting panel (7) outside is provided with panel (9), the panel (9) outside is provided with hard backing plate (8) for provide the loading end for sample nut (10), sample nut (10) top spin has connect sample bolt (11).
2. A torque coefficient testing machine for a torsional shear type bolt according to claim 1, wherein: the center of the load sensor (6) is provided with a T-shaped sleeve (19) which comprises a transverse end and a vertical end, the fixed end of the sample bolt (11) is clamped in the vertical end, the outer side of the transverse end of the T-shaped sleeve (19) is provided with an inner sleeve (25), a non-inner-ring full-complement needle bearing (22) is arranged in the load sensor (6), a hub inner support sleeve (20) is arranged in the non-inner-ring full-complement needle bearing (22), a thrust cylindrical roller bearing (23) is arranged in the hub inner support sleeve (20), and the thrust cylindrical roller bearing (23) is completely attached to the bearing surface of the load sensor (6).
3. A torque coefficient testing machine for a torsional shear type bolt according to claim 2, wherein: the sliding plate (5) is connected with the base (1) in a sliding mode, and a limiting device used for positioning is arranged on the sliding plate (5).
4. A torque coefficient testing machine for a torsional shear type bolt according to claim 3, wherein: the main shaft reversing mechanism comprises a gear box mounting seat (13) arranged at the top of the adapter plate (12) and a gear box (14) arranged at the top of the gear box mounting seat (13).
5. A torque coefficient testing machine for torsional shear bolts as claimed in claim 4, wherein: one side of the gear box (14) close to the planetary gear speed reducer (3) is connected with a dynamic torque sensor (16), one end, far away from the gear box (14), of the dynamic torque sensor (16) is connected with a coupler (15) and used for connecting the planetary gear speed reducer (3) with the dynamic torque sensor (16).
6. A torque coefficient testing machine for torsional shear bolts as claimed in claim 5, wherein: the anti-rotation device comprises an anti-rotation part (18) arranged on one side of the gear box mounting seat (13) and an anti-rotation plate (17) used for fixing the anti-rotation part (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121883759.0U CN215894262U (en) | 2021-08-12 | 2021-08-12 | Torque coefficient testing machine for torsional shear type bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121883759.0U CN215894262U (en) | 2021-08-12 | 2021-08-12 | Torque coefficient testing machine for torsional shear type bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215894262U true CN215894262U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121883759.0U Active CN215894262U (en) | 2021-08-12 | 2021-08-12 | Torque coefficient testing machine for torsional shear type bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215894262U (en) |
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2021
- 2021-08-12 CN CN202121883759.0U patent/CN215894262U/en active Active
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