CN219776959U - High-precision bolt connection pair final twisting torque detection device - Google Patents

Abstract

The utility model discloses a high-precision bolt connection pair final-screwing torque detection device, which relates to the technical field of engineering fasteners and comprises a multi-specification threaded sleeve and an angle indication disc, wherein grooves for being connected with bolts are formed in the threaded sleeve, a connecting part for being connected with a torque wrench is arranged at the top of the threaded sleeve, the angle indication disc is axially and slidably connected with the threaded sleeve through an adjusting ring, a plurality of angled scribing grooves are formed in the edge of the surface of the angle indication disc, and different marks for distinguishing the scribing grooves are arranged beside the scribing grooves. The utility model provides a high-precision bolt connection auxiliary final twisting torque detection device which has higher accuracy, is easy to observe and greatly reduces visual errors.

Description

High-precision bolt connection pair final twisting torque detection device

Technical Field

The utility model relates to the technical field of engineering fasteners, in particular to a high-precision bolt connection auxiliary final-screwing torque detection device.

Background

Steel structure connection is commonly welded, bolted or riveted. The bolt connection is divided into common bolt connection and high-strength bolt connection. The high-strength bolt connection pair consists of a bolt, a nut and a gasket, and in the use process of steel structure connection construction, the high-strength bolt is screwed by a special spanner, and a specified pretension force is applied to the high-strength bolt connection pair, so that the related specification requirements are met. The final twisting torque of the high-strength bolt connection pair is an item which needs to be checked after the steel structure connection construction is finished, and the quality of the checking result directly influences the safety performance of the steel structure. At present, the method adopted for detecting the final twisting torque of the high-strength bolt connection pair of the steel structure is the technical standard for detecting the field of the steel structure (GB/T50621-2010) and the quality inspection standard for construction quality of the steel structure engineering (GB 50205-2020), and the relevant information for detecting the final twisting torque of the high-strength bolt connection pair can be obtained according to the two specifications: (1) The detection of the final twisting torque of the high-strength bolt is carried out after the appearance inspection or the small hammer strike inspection is qualified; (2) The relative positions of the screw tail end and the nut are marked firstly, then the nut is unscrewed for 60 degrees, and then the torque wrench is used for screwing again for 60 degrees to 62 degrees (or the two lines on the screw tail end and the nut are overlapped), and the torque value at the moment is used as the actual measurement value of the final screwing torque of the high-strength bolt. In summary, how to realize the accuracy of the rotation angle of the nut when the final screwing torque of the steel structure high-strength bolt connection pair is detected is an important step for ensuring the accuracy of the final screwing torque detection result of the steel structure high-strength bolt connection pair. The existing scheme is that on a steel structure high-strength bolt connection pair with construction completed, a marker pen is used for scribing at the relative position of a screw tail end and a nut, the nut is unscrewed by a final-screwing torque wrench and returned by 60 degrees, then the nut is screwed by the torque wrench by 60-62 degrees, and the torque value measured by the torque wrench is an actual measurement value of the final-screwing torque of the high-strength bolt. In the actual detection process, the rotation angle is generally determined by the position of a mark line or a moment arm of the nut. The main defects are as follows: the torque wrench mainly comprises a force arm and a sleeve, and after the torque wrench is used for a period of time, the sleeve, a measured nut, the force arm of the torque wrench and the sleeve can generate a larger movable gap, and the gap can influence the accuracy of observing the rotation angle; when the sleeve is sleeved on the nut, the marks of the marker pen are covered, so that the marker pen cannot be directly observed, and if the rotation angle is determined by the rotation angle of the torque wrench, the accuracy of observing the rotation angle can be influenced when the arm of force of the torque wrench is slightly bent and deformed in the nut screwing process; in the process of screwing or unscrewing the nut, as the mark on the nut is covered by the sleeve, the torque wrench cannot accurately grasp the moment of stopping the application of force after the application of force, and if the rotation angle of the nut is too small, the nut needs to be screwed for multiple times, and the result is affected; if the rotation angle of the nut is too large, the result is invalid; the marking lines drawn by the marker pen are thicker, and a detection person can observe the marking lines on the nut and the screw tail by vision alone in the alignment process, so that larger visual errors exist.

Disclosure of Invention

1. Technical problem to be solved by the utility model

Aiming at the technical problems that the existing steel structure high-strength bolt connection auxiliary final twisting torque detection accuracy is insufficient, observation is difficult and larger visual errors exist, the utility model provides the high-precision bolt connection auxiliary final twisting torque detection device which has higher accuracy, is easy to observe and greatly reduces the visual errors.

2. Technical proposal

In order to solve the problems, the technical scheme provided by the utility model is as follows:

the utility model provides a vice torque detection device that twists eventually of high accuracy bolted connection, includes screw thread sleeve and the angle indication disc of many specifications, be equipped with in the screw thread sleeve be used for with bolted connection's groove, screw thread sleeve top is equipped with the connecting portion that are used for connecting torque wrench, the angle indication disc with screw thread sleeve passes through adjusting ring axial sliding connection, the edge on angle indication disc surface is equipped with a plurality of score line grooves of angulation, the score line inslot is other to be equipped with different marks that are used for distinguishing the score line groove.

Optionally, the circumference of the threaded sleeve is provided with threads, the inner side of the adjusting ring is provided with threads matched with the threaded sleeve, and the adjusting ring is buckled with the angle indicating disc.

Optionally, an annular notch is formed in the inner side of the adjusting ring, an annular protrusion is formed in the surface of the annular notch, the top of the angle indicating disc is in embedded fit with the annular notch, and an annular groove matched with the annular protrusion is formed in the top surface of the angle indicating disc.

Optionally, grease is arranged in a gap between the annular notch and the angle indicating disc.

Alternatively, the angle indicating disc is horn-shaped, the circumference of the angle indicating disc is concave inwards, and the bottom of the angle indicating disc is a plane extending outwards.

Alternatively, the circumference of the angle indicating disc is a curved surface recessed inward.

Alternatively, the number of the scribing grooves is 6, the angle of the 2 scribing grooves is 60 degrees, and the number of the scribing grooves is 6.

Alternatively, the connecting portion is of a hexagonal bolt structure.

Optionally, a limit post groove is arranged at the opposite surface of the threaded sleeve and the angle indicating disc, and the limit post groove is parallel to the axial line of the threaded sleeve.

Alternatively, the threaded sleeve and the angle indicating disc are integrally formed.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

the technical scheme provided by the utility model is provided with the threaded sleeve and the angle indicating disc which are axially and slidably connected, and the edge of the surface of the angle indicating disc is provided with a plurality of angled scribing grooves for positioning, so that the rotating angle of the steel structure high-strength bolt connecting auxiliary nut can be accurately indicated, the installation is simple and convenient, the angle indication is accurate and reliable, and the observation is convenient.

Drawings

Fig. 1 is a schematic diagram of an actual operation of a high-precision bolting auxiliary final-screwing torque detection device according to an embodiment of the utility model.

Fig. 2 is a schematic structural diagram of a high-precision bolting auxiliary final-screwing torque detection device according to an embodiment of the utility model.

Fig. 3 is a top view of a high-precision bolting sub-final-screwing torque detection device according to an embodiment of the utility model.

Fig. 4 is a rotation schematic diagram of a high-precision bolting pair final-screwing torque detection device according to an embodiment of the utility model.

1. A threaded sleeve; 2. adjusting the circular ring; 3. an angle indicating disc; 4. scribing grooves; 5. a torque wrench; 6. a steel structure; 7. a bolt; 8. a nut; 9. a gasket; 10. and a limit column groove.

Detailed Description

For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples.

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings. The first, second, etc. words are provided for convenience in describing the technical scheme of the present utility model, and have no specific limitation, and are all generic terms, and do not constitute limitation to the technical scheme of the present utility model. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. The technical schemes in the same embodiment and the technical schemes in different embodiments can be arranged and combined to form a new technical scheme without contradiction or conflict, which is within the scope of the utility model.

Examples

The utility model provides a vice torque detection device that twists eventually of high accuracy bolted connection, includes screw thread sleeve 1 and the angle indication disc 3 of many specifications, be equipped with in the screw thread sleeve 1 be used for with the groove of bolt 7 connection, screw thread sleeve 1 top is equipped with the connecting portion that is used for connecting torque wrench 5, the angle indication disc 3 with screw thread sleeve 1 is through adjusting ring 2 axial sliding connection, the edge on angle indication disc 3 surface is equipped with a plurality of scribing groove 4 of angulation, the other mark that is used for distinguishing the scribing groove 4 that is equipped with of scribing groove 4. The inner side of the adjusting ring 2 is provided with an annular notch, the surface of the annular notch is provided with an annular bulge, the top of the angle indicating disc 3 is in embedded fit with the annular notch, and the top surface of the angle indicating disc 3 is provided with an annular groove matched with the annular bulge. The angle indicating disc 3 is horn-shaped, and the circumference side of the angle indicating disc 3 is a plane which is concave inwards and the bottom of the angle indicating disc is extended outwards. The thread sleeve 1 and the angle indicating disc 3 are provided with limit post grooves 10 on opposite surfaces, and the limit post grooves 10 are parallel to the axis of the thread sleeve 1 and are used for preventing the angle indicating disc 3 and the thread sleeve 1 from relative rotation. The limit post slots 10 are symmetrically arranged to provide a more stable limit. The circumference side of the angle indicating disc 3 is a curved surface which is concave inwards, so that the edge of the angle indicating disc 3 is flat, and the observation is convenient.

The threaded sleeve 1 and the angle indicating disc 3 are of an integrated structure, so that the structural strength of the device is improved.

The device shifts the mark, displays the mark which is not easy to observe originally in a disc pointer type mode, is convenient for a detector to observe the rotation angle of the nut 8, can be screwed in place once, and does not need repeated operation; the rotation angle of the nut 8 is accurate, and the detection result is reliable; the movable gap between the torque wrench 5 and the nut 8 can be eliminated, and the influence of bending deformation of the arm of force of the torque wrench 5 is avoided. The device can accurately control the rotation angle of the high-strength bolt 7 of the steel structure 6 and the auxiliary nut 8, thereby achieving the purpose of improving the precision of the final twisting torque detection result. As shown in fig. 1, the device comprises a threaded sleeve 1, a horn-shaped angle indicating disc 3 and an adjusting ring 2. The threaded sleeve 1 in the device is used for screwing and unscrewing the auxiliary hexagonal nut 8 connected with the bolt 7, the size of the threaded sleeve is matched with the type of the hexagonal nut 8, and according to the type of the hexagonal bolt 7, M12, M16, M20, M22, M24, M27, M30 and the like are usually selected, and an adaptive sleeve is selected; the angle indicating disc 3 is provided with 6 scribing grooves 4 which are respectively numbered a, b, c, d, e, f, the angle interval of each scribing groove 4 is 60 degrees, the direction of each scribing groove 4 is parallel to the diagonal line of the edge of the sleeve 6, and the scribing grooves are positioned at two ends of 3 diagonal line extension lines; the positions of the scribing grooves 4 are in one-to-one correspondence with six corners of the inner wall of the sleeve, and when the sleeve is sleeved on the hexagonal nut 8, the six corners of the nut 8 can be corresponded, and the six corners are used for indicating the rotating angle of the nut 8; the lower end of the adjusting ring 2 is sleeved on the small opening of the angle indicating disc 3, and the upper end is matched with the threads of the threaded sleeve 1 and can rotate; the inner side of the adjusting ring 2 is provided with an annular notch, the surface of the annular notch is provided with an annular bulge, the top of the angle indicating disc 3 is in embedded fit with the annular notch, and the top surface of the angle indicating disc 3 is provided with an annular groove matched with the annular bulge. Optionally, grease is arranged in the gap between the annular notch and the angle indicating disc 3 for lubrication; by rotating the adjustment ring 2, it is achieved that the angle indication disc 3 slides up and down relative to the threaded sleeve 1, but no relative rotation takes place. The scribing grooves 4 are evenly distributed in 6, and the angle of 2 scribing grooves 4 is 60 degrees. The circumference of the threaded sleeve 1 is provided with threads, the inner side of the adjusting ring 2 is provided with threads matched with the threaded sleeve 1, and the adjusting ring 2 is buckled with the angle indicating disc 3.

When the final screwing torque of the high-strength bolt 7 of the steel structure 6 is measured, the following steps are carried out: (1) Selecting a bolt 7 to be detected on site, checking whether the bolt is qualified through appearance check or small hammer strike check, selecting a device matched with the nut 8, and sleeving a sleeve on the nut 8; (2) The circular ring 2 is rotated and adjusted, and the position of the angle indicating disc 3 is adjusted to be close to the surface of the steel structure 6, but the angle indicating disc is not in direct contact with the surface of the steel structure 6, so that the whole device is ensured not to rub with the surface of the steel structure 6 in the subsequent rotation process; (3) The force arm of the torque wrench 5 is installed, a certain force is applied to the unscrewing direction of the nut 8, the nut 8 is prevented from rotating, the sleeve is ensured to be in close contact with the surface of the nut 8, the force arm is in close contact with the sleeve, and the existing movable gap is eliminated; (4) Two adjacent scribing grooves 4 are selected according to the field condition, a marker pen penetrates through the scribing grooves 4 to mark the surface of the steel structure 6, and the surface mark of the steel structure 6 in the range of the scribing grooves 4 is full, for example: as shown in fig. 4, the positions of the scribing grooves 4a are marked with blue, and the positions of the scribing grooves 4f are marked with red; (6) Arranging a person to observe on the front of the bolt 7, continuously applying force to the direction of unscrewing the nut 8 by the detection person by using the torque wrench 5 until the position of the scribing groove 4a reaches the position of the red mark from the original blue mark position, namely the original position of the scribing groove 4f, stopping applying the force when the red mark lines are all displayed in the scribing groove 4a, and enabling the angle indication disc 3 to rotate by 60 degrees just at the moment, namely the nut 8 is unscrewed by 60 degrees; (7) Then a certain force is applied to the screwing direction of the nut 8, but the nut 8 is not rotated, so that the sleeve is ensured to be in close contact with the surface of the nut 8, the force arm is in close contact with the sleeve, and the existing movable gap is eliminated; (7) The detecting personnel continuously applies force to the direction of tightening the nut 8 by the torque wrench 5 until the scribing groove 4a returns to the blue mark from the red mark, namely, the original initial position, when the blue mark lines are all displayed in the scribing groove 4a and the red mark lines are all displayed in the scribing groove 4f, the angle indicating disc 3 just rotates by 60 degrees, namely, the nut 8 is tightened by 60 degrees, and the torque value measured at this time is the actual measurement value of the auxiliary final tightening torque of the high-strength bolt 7.

The device is used for accurately and rapidly marking the rotation angle indication lines on the surface of the steel structure 6 in the process of detecting the final twisting torque of the connection pair of the high-strength bolts 7 of the steel structure 6, and the angle indication lines are spaced at 60 degrees; the rotating angle of the hexagonal nut 8 can be judged by observing the rotating angle of the angle indicating disc 3, the situation which is originally difficult to observe or difficult to observe is amplified, the rotating angle of the nut 8 is precisely controlled through the marking lines of two colors, and therefore the detection precision of the final screwing torque of the bolt 7 is improved. The device has a wider elastic working range, and can be suitable for detecting the final screwing torque of bolts 7 of different types by using corresponding sleeves according to the types of different nuts 8; when the device detects the final twisting torque of the steel structure 6 bolt 7, the device is very convenient to install and use, does not need to install an additional auxiliary device, has high working efficiency, and obviously improves the precision of the detection result.

In summary, the device can accurately indicate the rotation angle of the high-strength bolt 7 of the steel structure 6 connected with the auxiliary nut 8, is simple and convenient to install, has accurate and reliable angle indication, is convenient to observe, and can make up for a plurality of defects existing in the prior art.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims (10)

1. The utility model provides a vice torque detection device that twists eventually of high accuracy bolted connection, its characterized in that, screw thread sleeve and angle indication disc including many specifications, be equipped with in the screw thread sleeve be used for with bolted connection's groove, screw thread sleeve top is equipped with the connecting portion that are used for connecting torque wrench, angle indication disc with screw thread sleeve passes through adjusting ring axial sliding connection, the edge on angle indication disc surface is equipped with a plurality of scribing grooves of angulation, the other mark that is used for distinguishing the scribing groove that is equipped with of scribing groove.

2. The high-precision bolt connection auxiliary final-screwing torque detection device according to claim 1, wherein threads are arranged on the periphery of the threaded sleeve, threads matched with the threaded sleeve are arranged on the inner side of the adjusting ring, and the adjusting ring is buckled with the angle indicating disc.

3. The high-precision bolt connection auxiliary final-twisting torque detection device according to claim 2, wherein an annular gap is formed in the inner side of the adjusting ring, an annular protrusion is formed on the surface of the annular gap, the top of the angle indicating disc is in embedded fit with the annular gap, and an annular groove matched with the annular protrusion is formed in the top surface of the angle indicating disc.

4. The high-precision bolting auxiliary final-twisting torque detection device according to claim 3, wherein grease is arranged in a gap between the annular notch and the angle indicating disc.

5. The high-precision bolting subsidiary twisting torque detecting device according to claim 1, wherein said angle indicating disc is horn-shaped, and the peripheral side of said angle indicating disc is inwardly recessed and the bottom is outwardly extended flat.

6. The high-precision bolting subsidiary twisting torque detecting device according to claim 5, wherein the peripheral side of said angle indicating disc is a curved surface recessed inward.

7. The high-precision bolting subsidiary twisting torque detecting device according to claim 1, wherein the number of the scribing grooves is 6, the angle of 2 scribing grooves is 60 degrees, and the number of the scribing grooves is 6.

8. The high-precision bolting subsidiary twisting torque detecting device according to claim 1, wherein said connecting portion is of a hexagonal bolt structure.

9. The high-precision bolting sub final tightening torque detection device according to any one of claims 1-8, wherein a limit post groove is provided at opposite surfaces of said threaded sleeve and said angle indicating disc, said limit post groove being parallel to an axis of said threaded sleeve.

10. The high precision bolting sub-final torque detection device according to any one of claims 1-8, wherein said threaded sleeve and said angle indicating disc are of integral construction.