An intelligent gasket for monitoring bolt loosening

Abstract

The utility model provides a kind of for monitoring bolt loosening intelligent gasket, it is related to bolt loosening monitoring technical field, including screw and nut, gasket includes two half-arc shell, the arc shell mouth is towards nut and two half-arc shell one pair of opposite end articulates, two half-arc shell inner shell bottom both ends are threadedly connected with screw rod, the screw rod is arranged in parallel with bolt center axis and arc shell is arranged with piezoelectric ceramic piece being set on two screw rods, two half-arc shell combination forms complete ring and is set in screw rod portion and acts as the role of gasket, rotating installation nut, utilize nut to compress two arc shells, arc shell compresses screw head, articulated installation two half-arc shell when needing to be removed, just rotate nut, so that the pressure of nut to arc shell reduces, and need not be taken off from screw surface, it is convenient and fast.

Description

Technical Field

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

[0002] Bolts are commonly used connecting parts, and loosening or falling bolts increases the accident rate. Therefore, a smart washer for monitoring bolt loosening, disclosed in CN213239424U, includes a top seat and a shielding shell, which are detachably connected by threads. A buffer plate and a piezoelectric ceramic plate are also provided between the top seat and the shielding shell, disposed inside the shielding shell. The bottom surface of the top seat contacts the buffer plate, which is positioned above the piezoelectric ceramic plate and fixedly connected to it with epoxy resin. The bottom surface of the piezoelectric ceramic plate is fixedly connected to the inner wall of the bottom end of the shielding shell with epoxy resin. A signal transmitter is connected to the piezoelectric ceramic plate via a wire, passing through the shielding shell. A through hole is opened in the center of the top seat, sequentially penetrating the top seat, buffer plate, piezoelectric ceramic plate, and the bottom surface of the shielding shell. By using the piezoelectric ceramic plate, when loosening occurs between the screw and the washer, the force on the piezoelectric ceramic plate changes. Due to the piezoelectric effect, an electrical signal is generated and transmitted to the signal transmitter, allowing real-time monitoring of the screw's condition.

[0003] However, existing technologies use a complete circular washer, which requires unscrewing the entire nut off the bolt when disassembling it. This may require turning the nut multiple times, especially when the nut is very tight or the threads are corroded, making disassembly more difficult and consuming a lot of time and effort. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing an intelligent gasket for monitoring bolt loosening.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a smart washer for monitoring bolt loosening, comprising a screw and a nut. The washer includes two semi-arc-shaped shells, the openings of which face the nut, and one pair of opposite ends of the two semi-arc-shaped shells are hinged together. Both ends of the bottom of the inner shells of the two semi-arc-shaped shells are threaded with lead rods. The lead rods are arranged parallel to the central axis of the bolt, and piezoelectric ceramic plates are sleeved on the two lead rods inside the arc-shaped shells. A pressure block is also provided inside the arc-shaped shells, sleeved on the two lead rods and in contact with the surface of the piezoelectric ceramic plates. A waterproof gasket is provided at the opening of the arc-shaped shell. One side of the waterproof gasket extends downward to form an extension block and is used to contact the upper surface of the pressure block. Arc-shaped inserts are provided on the outer sides of the two half-arc shells at the other pair of opposite ends. The inner arc surface of the arc-shaped inserts is inserted into the outer sides of the two half-arc shells, and insert rods are inserted at both ends of the side of the arc-shaped inserts facing the nut. An arc-shaped pressure ring is fixedly installed at one end of the two insert rods and overlaps with one pair of opposite ends of the upper surface of the two waterproof gaskets. An annular groove is opened on the surface of the nut and rotates with the surface of the arc-shaped pressure ring.

[0006] Preferably, the lead screw is threaded with a threaded pressure ring for pressing the piezoelectric ceramic sheet.

[0007] Preferably, the pressure block is located between two lead screws within the same arc-shaped shell, and the two ends of the top edge of the pressure block away from the piezoelectric ceramic sheet extend horizontally and are sleeved on the lead screw.

[0008] Preferably, the outer edge of the waterproof pad is interference-fitted with the outer edge of the arc-shaped shell, and the four sides of the extension block are slidably connected to the inner walls of the arc-shaped shell and have through holes on their surfaces for fitting onto the surface of the lead screw.

[0009] Preferably, the upper surface of the pressure block is provided with insertion holes at both ends, and the bottom surface of the extension block within the same arc-shaped shell is fixedly installed with a cylinder that is inserted into the insertion hole.

[0010] Preferably, each of the bottom surfaces of the waterproof pad is fixedly equipped with a post near the swing edge of each half-arc plate, and the two posts are respectively inserted into the swing ends of the two arc-shaped shell openings.

[0011] Preferably, the bottom surface of the waterproof pad is fitted with the arc-shaped shell opening with a clearance.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the two semi-arc shells are combined to form a complete ring and are fitted onto the screw rod to act as a washer. The nut is rotated to install the screw, and the nut presses the two arc shells together. The arc shells press against the screw head. When the two semi-arc shells that are hinged together need to be removed, only the nut needs to be rotated to reduce the pressure of the nut on the arc shells, without having to remove the nut from the screw surface, which is convenient and quick.

[0014] 2. In this utility model, the insertion rod on the threaded pressure ring passes through the arc-shaped insertion block to facilitate the fixation of the arc-shaped insertion block's position. At the same time, the edge of the upper surface of the arc-shaped pressure ring is engaged with the annular groove on the surface of the nut to facilitate the fixation of the arc-shaped pressure ring's position, thereby fixing the position of the arc-shaped insertion block and the two halves of the arc-shaped shell. When the nut rotates, because the annular groove is rotatably connected to the arc-shaped pressure ring, the nut can rotate relative to the arc-shaped pressure ring. Furthermore, when the nut rotates and descends on the screw surface, the nut can also press the arc-shaped pressure ring to descend. The descent of the arc-shaped pressure ring causes the insertion rod to slide relative to the arc-shaped insertion block, thus not affecting the use of the piezoelectric ceramic sheet. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of an intelligent washer for monitoring bolt loosening is provided for this utility model;

[0016] Figure 2 This invention proposes an intelligent washer for monitoring bolt loosening. Figure 1 A schematic diagram of the structure viewed from below;

[0017] Figure 3 This invention proposes an intelligent washer for monitoring bolt loosening. Figure 1 A schematic diagram of the exploded structure;

[0018] Figure 4 This invention proposes an intelligent washer for monitoring bolt loosening. Figure 1 A cross-sectional structural diagram.

[0019] Legend: 1. Screw; 2. Nut; 3. Arc-shaped shell; 4. Arc-shaped insert; 5. Arc-shaped pressure ring; 6. Insert rod; 7. Piezoelectric ceramic sheet; 8. Pressure block; 9. Lead screw; 10. Waterproof gasket; 11. Insert post; 12. Annular groove; 13. Insert hole; 14. Through hole; 15. Extension block; 16. Threaded pressure ring; 17. Cylinder. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] like Figures 1-4As shown, a smart washer for monitoring bolt loosening includes a screw 1 and a nut 2. The washer includes two semi-arc shells 3. In use, the two semi-arc shells 3 are combined to form a complete ring and fitted onto the shank of the screw 1, acting as a washer. Then, the nut 2 is rotated to install, pressing the two semi-arc shells 3 together. The openings of the semi-arc shells 3 face the nut 2, and one pair of opposite ends of the two semi-arc shells 3 are hinged. When the hinged semi-arc shells 3 need to be removed, simply rotate the nut 2 to reduce the pressure of the nut 2 on the semi-arc shells 3, without needing to remove the nut 2 from the surface of the screw 1. After the nut 2 loses its pressure on the arc-shaped shell 3, the two halves of the arc-shaped shell 3 can be rotated open using the hinge and then removed directly from the surface of the screw 1. Both ends of the inner bottom of the two halves of the arc-shaped shell 3 are threaded with screw rods 9. The screw rods 9 are parallel to the central axis of the bolt, and piezoelectric ceramic plates 7 are sleeved on the two screw rods 9 inside the arc-shaped shell 3. Threaded pressure rings 16 are threaded onto the screw rods 9 to press the piezoelectric ceramic plates 7. The screw rods 9 prevent the piezoelectric ceramic plates 7 from wobbling inside the arc-shaped shell 3, while the threaded pressure rings 16 completely fix the position of the piezoelectric ceramic plates 7. Inside the shell 3, there is also a pressure block 8 that is sleeved on two lead screws 9 and abuts against the surface of the piezoelectric ceramic sheet 7. The pressure block 8 is located between the two lead screws 9 within the same arc-shaped shell 3, and the two ends of the side of the pressure block 8 away from the piezoelectric ceramic sheet 7 extend horizontally and are sleeved on the lead screws 9. Insertion holes 13 are provided at both ends of the upper surface of the pressure block 8. A cylindrical body 17 that is inserted into the insertion hole 13 is fixedly installed on the bottom surface of the extension block 15 within the same arc-shaped shell 3. Similarly, the lead screws 9 are used to ensure that the pressure block 8 can only move relative to the piezoelectric ceramic sheet 7 in one direction. Therefore, the nut 2 is used to extend the cylinder 17. When block 15 generates pressure, extension block 15 transmits the pressure to pressure block 8. Pressure block 8 moves along the surface of screw 9 toward piezoelectric ceramic sheet 7 until it presses the surface of piezoelectric ceramic sheet 7. That is, the pressure generated by nut 2 on extension block 15 is directly transmitted to piezoelectric ceramic sheet 7. Therefore, in actual use, when the pressure detected by piezoelectric ceramic sheet 7 decreases, it means that nut 2 is loose. In addition, the cylinder 17 set in this solution is inserted into the insertion hole 13 on the surface of pressure block 8. Therefore, when extension block 15 presses pressure block 8, it can ensure that the direction of pressure transmission is always toward piezoelectric ceramic sheet 7.

[0023] A waterproof gasket 10 is provided at the opening of the arc-shaped shell 3. One side of the waterproof gasket 10 extends downward to form an extension block 15, which is used to contact the upper surface of the pressure block 8. The outer edge of the waterproof gasket 10 is interference-fitted with the outer edge of the arc-shaped shell 3. The four sides of the extension block 15 are slidably connected to the inner walls of the arc-shaped shell 3, and the surface of the extension block 15 is provided with through holes 14 for fitting onto the surface of the lead screw 9. The edge of the waterproof gasket 10 extends beyond the outer edge of the arc-shaped shell 3. Therefore, when the nut 2 is rotated, the nut 2 presses on the surface of the waterproof gasket 10, thereby generating pressure on the extension block 15. In addition, the waterproof gasket 10 is slidably connected to the inner wall of the arc-shaped shell 3 to prevent water leakage. A pin 11 is fixedly installed on the bottom surface of the waterproof gasket 10 near the swing edge of each half of the arc plate. The two pins 11 are respectively inserted into the swing ends of the openings of the two arc-shaped shells 3. The position of the waterproof gasket 10 can be fixed by inserting the pins 11 into the swing ends of the openings of the arc-shaped shells 3.

[0024] Arc-shaped inserts 4 are provided on the outer sides of the two semi-arc shells 3 at the opposite ends. The inner arc surface of the arc-shaped inserts 4 is inserted into the outer sides of the two semi-arc shells 3, and insert rods 6 are inserted into both ends of the side of the arc-shaped inserts 4 facing the nut 2. An arc-shaped pressure ring 5 is fixedly installed at one end of the two insert rods 6, which overlaps with one of the opposite ends of the upper surface of the two waterproof gaskets 10. The surface of the nut 2 has an annular groove 12 that rotatably connects with the surface of the arc-shaped pressure ring 5. In actual use, the position of the two semi-arc shells 3 can be fixed by inserting the arc-shaped inserts 4 into the opening and closing ends of the two semi-arc shells 3, and the arc-shaped pressure ring 5 can be easily installed by inserting the insert rods 6 into the arc-shaped inserts 4, overlapping the arc-shaped pressure ring 5 on one edge of the upper surface of the waterproof gasket 10. In addition, this solution The inner side of the arc-shaped pressure ring 5 fits against the side of the waterproof pad 10. Therefore, after the arc-shaped pressure ring 5 is fixed in position, the insertion post 11 on the waterproof pad 10 is inserted into the opening of the arc-shaped shell 3 to prevent the two waterproof pads 10 from rotating. After the arc-shaped pressure ring 5 is fixed in position, when installing the nut 2, the edge of the upper surface of the arc-shaped pressure ring 5 is inserted into the annular groove 12 on the surface of the nut 2. When the nut 2 rotates, because the annular groove 12 is rotatably connected to the arc-shaped pressure ring 5, the nut 2 can rotate relative to the arc-shaped pressure ring 5. When the nut 2 rotates and descends on the surface of the screw 1, the nut 2 can also press the arc-shaped pressure ring 5 to descend. The descent of the arc-shaped pressure ring 5 causes the insertion rod 6 to slide relative to the arc-shaped insertion block 4, so it will not affect the use of the piezoelectric ceramic sheet 7.

[0025] The bottom surface of the waterproof pad 10 is fitted with the opening of the arc-shaped shell 3 with a clearance. The clearance ensures that when the pressure generated by the nut 2 on the waterproof pad 10 is applied to the surface of the piezoelectric ceramic sheet 7 by the pressure block 8, the waterproof pad 10 will not come into contact with the opening of the arc-shaped shell 3.

[0026] The method of using this utility model is as follows: During assembly, the two semi-arc shells 3 are fastened onto the screws 1, and the two semi-arc shells 3 are fixed using the arc-shaped inserts 4. Then, the two piezoelectric ceramic sheets 7 are respectively installed inside the two arc shells 3 and fitted onto the lead screws 9. The threaded pressure rings 16 are installed on the lead screws 9 to fix the position of the piezoelectric ceramic sheets 7. Then, the pressure blocks 8 are installed using the two lead screws 9. The two waterproof pads 10 are respectively installed at the openings of the two arc shells 3. The extension blocks 15 on the surface of the waterproof pads 10 enter the arc shells 3 and press the surface of the pressure blocks 8. At the same time, the inserts 1 on the waterproof pads 10... Insert the arc-shaped shell 3 into the shell opening, and use the insertion rod 6 to connect with the arc-shaped insertion block 4 to install the arc-shaped pressure ring 5. The arc-shaped pressure ring 5 is stuck on the sides of the two waterproof pads 10. Install the nut 2 on the nut 2 and rotate the nut 2. The annular groove 12 on the nut 2 fits on the surface of the arc-shaped pressure ring 5. Continuously rotate the nut 2 to press the arc-shaped pressure ring 5. The arc-shaped pressure ring 5 drives the insertion rod 6 to move relative to the arc-shaped insertion block 4. At the same time, the arc-shaped pressure ring 5 presses the waterproof pad 10. The waterproof pad 10 presses the extension block 15 down and applies pressure to the surface of the pressure block 8, so that the pressure block 8 presses the surface of the piezoelectric ceramic sheet 7.

[0027] The wiring diagram of the piezoelectric ceramic sheet 7 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 arrangement of the piezoelectric ceramic sheet 7 will not be explained in detail.

[0028] 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. A smart washer for monitoring bolt loosening, comprising a screw (1) and a nut (2), characterized in that: The gasket includes two semi-arc shells (3), the openings of which face the nut (2) and one pair of opposite ends of the two semi-arc shells (3) are hinged together. Both ends of the inner bottom of the two semi-arc shells (3) are threaded with screws (9). The screws (9) are parallel to the central axis of the bolt, and piezoelectric ceramic plates (7) are sleeved on the two screws (9) inside the arc shells (3). A pressure block (8) is also sleeved on the two screws (9) and contacts the surface of the piezoelectric ceramic plate (7) inside the arc shells (3). A waterproof gasket (10) is provided at the opening of the arc shells (3), with one side of the waterproof gasket (10) having a central... Extending downwards to form an extension block (15) and used to contact the upper surface of the pressure block (8), the outer sides of the two semi-arc shells (3) are provided with arc-shaped inserts (4) at the other pair of opposite ends, the inner arc surface of the arc-shaped inserts (4) is inserted into the outer sides of the two semi-arc shells (3), and the two ends of the arc-shaped inserts (4) facing the nut (2) are both inserted with insert rods (6), and one end of the two insert rods (6) is fixedly installed with an arc-shaped pressure ring (5) that overlaps with one pair of opposite ends of the upper surface of the two waterproof pads (10), and the surface of the nut (2) is provided with an annular groove (12) that is rotatably connected to the surface of the arc-shaped pressure ring (5).

2. The intelligent washer for monitoring bolt loosening according to claim 1, characterized in that: The lead screw (9) is threaded with a threaded pressure ring (16) for pressing the piezoelectric ceramic sheet (7).

3. The intelligent washer for monitoring bolt loosening according to claim 1, characterized in that: The pressure block (8) is located between two lead screws (9) within the same arc-shaped shell (3), and the two ends of the side of the pressure block (8) away from the piezoelectric ceramic sheet (7) extend horizontally and are sleeved on the lead screw (9).

4. The intelligent washer for monitoring bolt loosening according to claim 1, characterized in that: The outer edge of the waterproof pad (10) is interference-fitted with the outer edge of the arc shell (3), and the sides of the extension block (15) are slidably connected to the inner walls of the arc shell (3) and the surface is provided with through holes (14) for fitting onto the surface of the lead screw (9).

5. The intelligent washer for monitoring bolt loosening according to claim 1, characterized in that: The pressure block (8) has insertion holes (13) at both ends on its upper surface. The bottom surface of the extension block (15) in the same arc-shaped shell (3) is fixedly installed with a cylinder (17) that is inserted into the insertion hole (13).

6. The intelligent washer for monitoring bolt loosening according to claim 1, characterized in that: The bottom surface of the waterproof pad (10) is fixedly installed with a post (11) near the swing edge of each half arc plate, and the two posts (11) are respectively inserted into the swing end of the shell opening of the two arc shells (3).

7. The intelligent washer for monitoring bolt loosening according to claim 1, characterized in that: The bottom surface of the waterproof pad (10) is fitted with the opening of the arc-shaped shell (3) with a clearance.

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