A bolt fastening abnormality intelligent monitoring device

Abstract

The utility model provides a kind of bolt fastening abnormal intelligence monitoring device, it is related to bolt fastening monitoring technical field, bolt includes screw and nut, monitoring device includes tension sensor and wear rod, the through-hole is set in the screw stud side surface close to tail end position, by setting tension sensor and pull rope, utilize pull rope to pass through connecting hole upward and tie up straightening, record the value of tension sensor, when bolt loosens, namely screw rotates or nut rotates, nut will slide upward on screw surface, nut will move to wear rod direction at this time, the distance between them shortens, pull rope will loosen at this time, therefore the value of tension sensor will reduce, it is convenient for personnel remote observation, and the tension sensor used is not dependent on optical imaging, not by dust, water vapor, light and other environmental factors, even in the industrial scene of more dust, tension sensor can still monitor tension change stably, avoid the misjudgment caused by image blur.

Description

Technical Field

[0001] This utility model relates to the field of bolt fastening monitoring technology, and in particular to an intelligent monitoring device for bolt fastening abnormalities. Background Technology

[0002] Bolt tightening monitoring is a key aspect of ensuring the safety and stable operation of equipment and structures. Therefore, an existing sensor alarm device for detecting loose bolts on wind turbine towers, with publication number CN220487774U, operates as follows: In the initial state, the centers of the emitting device, the slot, and the display device are on the same horizontal line, and a complete image is displayed on the display device. At this time, the controller activates the emitting device, and the light emitted by the emitting device is projected onto the display device through the slot. The controller then controls the camera to capture the image on the display device and transmits the image to the controller. The controller sends the image to a large screen in the ground control center, where staff can view the image to determine if the bolts are loose. If the bolts on the wind turbine tower are loose, the bolts and screws have undergone relative displacement, and the centers of the emitting device, the slot, and the display device are no longer on the same horizontal line. The controller then activates a micro motor, whose counterclockwise rotation drives the slot to rotate. The angle detection sensor rotates along with the micro motor until the emitting device projects a complete image onto the display device. The micro motor is then turned off, and the angle detection sensor also stops moving. The angle detection sensor can detect the angle of rotation of the micro motor, thus indicating the angle of rotation of the bolt and determining the degree of looseness of the bolt.

[0003] However, when dust in the air adheres to the surface of the camera, it will directly interfere with the image acquisition quality, resulting in a decrease in image clarity. Dust will also block the camera lens, making the image on the display device blurry and unable to accurately identify key information such as the area and shape of the light, making it difficult to determine whether the bolts are loose. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing an intelligent monitoring device for abnormal bolt tightening.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an intelligent monitoring device for abnormal bolt tightening, wherein the bolt includes a screw and a nut, the monitoring device includes a tension sensor and a through rod, a through hole is opened on the side of the screw stud near the tail end, the central axis of the through hole is perpendicular to the central axis of the screw and passes through the center of the screw, the through rod passes through the through hole and spring pins are installed on both sides of the through rod surface located on both sides of the screw, the tension sensor housing is fixedly mounted with a rotating ring that is rotatably connected to the end face of the nut and distributed coaxially with the lead screw, a retaining ring is detachably installed on the rotating ring, the retaining ring has two symmetrically arranged retaining grooves on the end away from the nut that are respectively inserted into the two ends of the through rod, the measuring end of the tension sensor is connected to a pull rope, the through rod surface has a connecting hole, the connecting hole is distributed coaxially with the tension sensor and is used for the pull rope to pass through.

[0006] Preferably, the inner edge of the rotating ring extends upward to form an annular protrusion, and the bottom end of the retaining ring has an annular groove that engages with the annular protrusion of the rotating ring.

[0007] Preferably, the annular protrusion on the inner edge of the swivel ring has a plurality of threaded holes, and the outer edge of the retaining ring has a mating hole that corresponds one-to-one with the plurality of mating holes and passes through the annular groove. The threaded hole is threaded with a screw that passes through the corresponding mating hole.

[0008] Preferably, a limiting ring is fitted on the outer wall of the retaining ring, and the head of the screw is located outside the retaining ring and abuts against the inner wall of the limiting ring.

[0009] Preferably, an arc-shaped magnetic seat is fixedly installed on the outer wall of the retaining ring between two adjacent mating holes, and several of the arc-shaped magnetic seats are arranged in a ring array around the central axis of the retaining ring and are inserted into the bottom end of the limiting ring.

[0010] Preferably, the side of the retaining ring away from the nut and both sides of the retaining groove are threadedly connected to splicing rods, and the splicing rods are arranged parallel to the central axis of the retaining ring.

[0011] Preferably, the side of the splicing rod smoothly transitions to the inner wall of the adjacent slot and is on the same vertical plane, and the two splicing rods located at the same slot opening are used for sliding connection with the through rod.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, a tension sensor and a pull rope are set up. The pull rope is passed upward through the connecting hole and tightened to record the value of the tension sensor. When the bolt is loosened, that is, when the screw or nut is rotated, the nut will slide upward on the screw surface. At this time, the nut will move towards the rod, and the distance between the two will shorten. At this time, the pull rope will loosen, so the value of the tension sensor will decrease. This makes it convenient for personnel to observe remotely. Moreover, the tension sensor used does not rely on optical imaging and is not affected by environmental factors such as dust, water vapor, and light. Even in industrial scenes with a lot of dust, the tension sensor can still stably monitor the change of tension and avoid misjudgment caused by image blurring.

[0013] 2. In this utility model, by setting a splicing rod, when the distance between the nut installation position and the through rod is too large, causing the slot to be unable to limit the through rod, the splicing rod can effectively limit the through rod by extending the length of the slot, which is compatible with bolts of different installation depths and expands the applicable range of the device. Attached Figure Description

[0014] Figure 1 This utility model provides a three-dimensional structural schematic diagram of an intelligent monitoring device for abnormal bolt tightening. Figure 2 This utility model proposes an intelligent monitoring device for abnormal bolt tightening. Figure 1 A schematic diagram of the cross-sectional structure; Figure 3 This utility model proposes an intelligent monitoring device for abnormal bolt tightening. Figure 1 A schematic diagram of the exploded structure; Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0015] Legend: 1. Screw; 2. Nut; 3. Snap ring; 4. Splicing rod; 5. Through rod; 6. Pull rope; 7. Rotary ring; 8. Tension sensor; 9. Slot; 10. Through hole; 11. Screw; 12. Annular groove; 13. Connecting hole; 14. Limiting ring; 15. Arc-shaped magnetic base; 16. Spring pin; 17. Mating hole; 18. Threaded hole. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] like Figures 1-4 As shown, an intelligent monitoring device for bolt tightening abnormalities is disclosed. The bolt includes a screw 1 and a nut 2. The monitoring device includes a tension sensor 8 and a through rod 5. A through hole 10 is provided on the side of the screw 1 near the tail end. The central axis of the through hole 10 is perpendicular to the central axis of the screw 1 and passes through the center of the screw 1. The through rod 5 passes through the through hole 10, and spring pins 16 are installed on both sides of the through rod 5. The through rod 5 passes horizontally through the through hole 10 and, together with the two spring pins 16, can limit the two ends of the screw 1 to prevent the through rod 5 from slipping out of the through hole 10. A rotating ring 7 is fixedly installed on the housing of the tension sensor 8. It is rotatably connected to the end face of the nut 2 and is coaxial with the lead screw. A retaining ring 3 is detachably installed on the rotating ring 7. The retaining ring 3 has two symmetrically arranged retaining grooves 9 at the end away from the nut 2, which are respectively inserted into the two ends of the through rod 5. A pull rope 6 is connected to the measuring end of the tension sensor 8. The surface of the through rod 5... A connecting hole 13 is provided, which is coaxially distributed with the tension sensor 8 and is used for the pull rope 6 to pass through. After the object is tightened and fixed by the cooperation of the screw 1 and the nut 2, the rotating ring 7 is rotated to move the tension sensor 8 to directly below the connecting hole 13 on the rod 5. The pull rope 6 is then passed upward through the connecting hole 13 and tightened. At this time, the value of the tension sensor 8 is recorded. When the bolt is loosened, that is, when the screw 1 or the nut 2 is rotated, the nut 2 will slide upward on the surface of the screw 1. At this time, the nut 2 will move towards the rod 5, and the distance between them will shorten. At this time, the pull rope 6 will loosen, so the value of the tension sensor 8 will decrease. In addition, the retaining groove 9 set on the retaining ring 3 will cause the rod 5 to rotate when the screw 1 rotates and drives the rod 5 to rotate. The retaining ring 3 drives the rotating ring 7 and the pressure sensor to rotate synchronously, so the pull rope 6 will not tilt and will continue to be taut.

[0019] The inner edge of the rotating ring 7 extends upward to form an annular protrusion. The bottom end of the retaining ring 3 has an annular groove 12 that engages with the annular protrusion of the rotating ring 7. The annular groove 12 and the annular protrusion on the rotating ring 7 can initially fix the position of the retaining ring 3. The annular protrusion on the inner edge of the rotating ring 7 has several threaded holes 18. The outer edge of the retaining ring 3 has mating holes 17 that correspond one-to-one with several mating holes 17 and pass through the annular groove 12. Screws 11, threaded into the threaded holes 18 and passing through the corresponding mating holes 17, are threaded into the threaded holes 18. After the retaining ring 3 is initially fixed, rotating the rotating ring 7 aligns the tension sensor 8 with the connecting cylinder on the through rod 5. At this point, the threaded holes 18 on the annular protrusion of the rotating ring 7 will automatically align with the mating holes 17 on the retaining ring 3. Then, the screws 11... The screw 11 passes through the threaded hole 18 and the mating hole 17 and is threadedly connected to the threaded hole 18, thereby fixing the relative position of the retaining ring 3 and the rotating ring 7. A limiting ring 14 is sleeved on the outer wall of the retaining ring 3. The head of the screw 11 is located outside the retaining ring 3 and abuts against the inner wall of the limiting ring 14. An arc-shaped magnetic seat 15 is fixedly installed on the outer wall of the retaining ring 3 between two adjacent mating holes 17. Several arc-shaped magnetic seats 15 are arranged in a ring array around the central axis of the retaining ring 3 and are inserted into the bottom end of the limiting ring 14. After the screw 11 is installed, the limiting ring 14 descends under the action of gravity and is magnetically attracted to the arc-shaped magnetic seat 15 to fix the position of the limiting ring 14. At this time, the screw 11 can be prevented from loosening and falling off by the abutting of the inner side of the limiting ring 14 against the head of the screw 11.

[0020] The side of the retaining ring 3 away from the nut 2 and both sides of the groove 9 are threadedly connected to the splicing rod 4. The splicing rod 4 is set parallel to the central axis of the retaining ring 3. The side of the splicing rod 4 smoothly transitions with the inner wall of the adjacent groove 9 and is on the same vertical plane. The two splicing rods 4 located in the same groove 9 are used to slide with the through rod 5. When the nut 2 is installed on the screw 1 at a slightly lower position, causing the groove 9 on the retaining ring 3 to be unable to hold the two ends of the through rod 5, the splicing rod 4 of the corresponding length is installed on both sides of the groove 9. The pair of splicing rods 4 installed in the groove 9 replace the groove 9 to limit the through rod 5. That is, when the screw 1 drives the through rod 5 to rotate, the through rod 5 will push the splicing rod 4 to drive the retaining ring 3 to rotate. In addition, after the splicing rod 4 is installed, it can be reinforced by welding.

[0021] The method of using this utility model is as follows: Insert the through rod 5 into the through hole 10 at the tail end of the screw 1. The spring pins 16 on both sides of the through rod 5 limit it to prevent it from slipping out. The retaining ring 3 is initially fixed by the annular protrusion of the rotating ring 7 and the annular groove 12 of the retaining ring 3. Move the rotating ring 7 to install the tension sensor 8 and adjust the rotating ring 7 so that the tension sensor 8 is aligned with the connection hole 13 of the through rod 5. Then, use the screw 11 to pass through the threaded hole 18 of the rotating ring 7 and fix it with the mating hole 17 of the retaining ring 3. The limiting ring 14 is lowered and fixed by the magnetic attraction of the arc-shaped magnetic seat 15 to prevent the screw 11 from loosening. After the bolt is tightened, the pull rope 6 of the tension sensor 8 is passed upward through the connecting hole 13 of the rod 5 and tied tightly. The initial value of the tension sensor 8 at this time (corresponding to the bolt tightening state) is recorded. When the bolt loosens, the nut 2 slides upward along the screw 1, shortening the distance with the rod 5, causing the pull rope 6 to loosen, and the value of the tension sensor 8 to decrease.

[0022] The wiring diagram of the tension sensor 8 in this utility model is common knowledge in the field. Its working principle is a well-known technology. The appropriate model is selected according to the actual use. Therefore, the control method and wiring layout of the tension sensor 8 will not be explained in detail.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An intelligent monitoring device for bolt tightening abnormalities, wherein the bolt includes a screw (1) and a nut (2), characterized in that: The monitoring device includes a tension sensor (8) and a through rod (5). A through hole (10) is provided on the side of the screw (1) near the tail end. The central axis of the through hole (10) is perpendicular to the central axis of the screw (1) and passes through the center of the screw (1). The through rod (5) passes through the through hole (10) and spring pins (16) are installed on both sides of the through rod (5). The housing of the tension sensor (8) is fixedly installed with a rotating ring (7) that is rotatably connected to the end face of the nut (2) and distributed coaxially with the lead screw. A retaining ring (3) is detachably installed on the rotating ring (7). The retaining ring (3) has two symmetrically arranged slots (9) at the end away from the nut (2) that are respectively inserted into the two ends of the through rod (5). The measuring end of the tension sensor (8) is connected to a pull rope (6). A connecting hole (13) is provided on the surface of the through rod (5). The connecting hole (13) is distributed coaxially with the tension sensor (8) and is used for the pull rope (6) to pass through.

2. The intelligent monitoring device for abnormal bolt tightening according to claim 1, characterized in that: The inner edge of the rotating ring (7) extends upward to form an annular protrusion, and the bottom end of the retaining ring (3) is provided with an annular groove (12) that is inserted into the annular protrusion of the rotating ring (7).

3. The intelligent monitoring device for abnormal bolt tightening according to claim 2, characterized in that: The inner edge of the swivel (7) has a number of threaded holes (18) on the annular protrusion. The outer edge of the retaining ring (3) has a mating hole (17) that corresponds to a number of mating holes (17) and passes through the annular groove (12). The threaded hole (18) is threaded with a screw (11) that passes through the corresponding mating hole (17).

4. The intelligent monitoring device for abnormal bolt tightening according to claim 3, characterized in that: The outer wall of the retaining ring (3) is fitted with a limiting ring (14), and the head of the screw (11) is located outside the retaining ring (3) and abuts against the inner wall of the limiting ring (14).

5. The intelligent monitoring device for abnormal bolt tightening according to claim 4, characterized in that: An arc-shaped magnetic seat (15) is fixedly installed on the outer wall of the retaining ring (3) between two adjacent mating holes (17). Several of the arc-shaped magnetic seats (15) are arranged in a ring array around the central axis of the retaining ring (3) and are inserted into the bottom end of the limiting ring (14).

6. The intelligent monitoring device for abnormal bolt tightening according to claim 1, characterized in that: The side of the retaining ring (3) away from the nut (2) and the side of the retaining groove (9) are threadedly connected to the splicing rod (4), and the splicing rod (4) is set parallel to the central axis of the retaining ring (3).

7. The intelligent monitoring device for abnormal bolt tightening according to claim 6, characterized in that: The side of the splicing rod (4) smoothly transitions with the inner wall of the adjacent slot (9) and is on the same vertical plane. The two splicing rods (4) located at the slot opening of the same slot (9) are used to slide with the through rod (5).

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