Double-end arc-shaped duct piece bolt

Abstract

The utility model provides a double-end arc segment bolt, which relates to the technical field of segment bolts, and comprises a segment bolt body, the surface of the segment bolt body is provided with a thread groove, the surface of the thread groove is provided with a gasket, the surface of the thread groove is in threaded connection with a nut, and the surface of the thread groove is provided with a baffle plate. A cover cap is placed on the surface of the nut, a connecting ring is fixedly connected to the surface of the cover cap, a fixing strip is fixedly installed in the cover cap, the pipe piece bolt body, the threaded groove, the nut, the cover cap, the connecting ring and the fixing strip are arranged, the fixing strip is located in the cover cap, and the six sets of fixing strips exactly correspond to the six edges of the nut. During installation, the cover can be just attached to the surface of the nut, so that the whole cover can seal the nut and the thread groove, moisture in air is effectively prevented from being attached to the surface of the nut, the bolt is prevented from rusting, and the service life of the whole bolt is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of segment bolts, in particular to a double-headed arc-shaped segment bolt. Background Art

[0002] In the construction of subway tunnels and various large underwater tunnel projects, the shield construction method is widely used for its advantages of high mechanization, fast construction speed, and small environmental impact. When using the shield method for construction, prefabricated pipe segments need to be spliced ​​and connected on site to control ground settlement and reduce the impact on ground buildings. Segment bolts are commonly used to connect these prefabricated pipe segments. They are usually divided into two categories: circumferential connection and longitudinal connection. Hexagonal arc segment bolts are often used for circumferential connection between pipe segments. Publication No. CN218582029U A new type of double-headed arc-shaped segment bolt has been developed, including a bolt column, threaded columns are provided at both ends of the bolt column, fixing holes are provided in the middle of the threaded column, fixing nails are engaged in the fixing holes, and oil filling grooves are transversely provided on the outer wall of the bolt column, and annular grooves are provided on the outer wall of the bolt column from left to right. In the actual application of the above technology, the underground air is relatively humid, and the moisture in the air is easy to adhere to the surface of the nut and the thread groove, causing the surface of the nut or the thread groove to rust, thereby causing its aging or even falling off, which greatly increases the risk of segment collapse and needs to be improved. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0004] The utility model adopts the following technical scheme: a double-headed arc-shaped segment bolt, comprising a segment bolt body, a thread groove is opened on the surface of the segment bolt body, a washer is placed on the surface of the thread groove, a nut is threadedly connected to the surface of the thread groove, a baffle is placed on the surface of the thread groove, a cover is placed on the surface of the nut, a connecting ring is fixedly connected to the surface of the cover, and a fixing strip is fixedly installed inside the cover.

[0005] Preferably, the baffle is located between the washer and the nut. Here, when the arc segment bolt is used, the two segments are connected by using the bolt, and then the nut is used to twist and squeeze the baffle, and the baffles on both sides are squeezed at the same time, so that the two segments are fixed. The washer can seal the gap between the segment opening and the bolt to prevent moisture in the air from entering the inside of the sheath, causing the bolt to rust, thereby reducing the service life.

[0006] Preferably, the surface of the cover is fixedly installed with anti-skid patterns. Here, when using bolts, the underground air is relatively humid, and the moisture in the air is easy to adhere to the surface of the nut and the thread groove, causing the surface of the nut or the thread groove to rust, thereby causing it to age or even fall off, greatly increasing the risk of collapse of the pipe segment. The cover can seal the nut and the thread groove, effectively preventing moisture in the air from adhering to the surface of the nut, and the anti-skid patterns can increase the friction between the cover and the hands of the personnel, making it more time-saving and labor-saving for the personnel during installation.

[0007] Preferably, the number of the fixing strips is six groups, and the six groups of the fixing strips correspond to the six planes of the nut. Here, the fixing strips are located inside the cover, and the six groups of fixing strips just correspond to the six sides of the nut. When installed, they can just fit on the surface of the nut, thereby improving the use efficiency of the cover.

[0008] Preferably, the number of washers is two groups, and the two groups of washers are symmetrically distributed on the surface of the segment bolt body. Here, the position where the bolt is used in the segment is open, and the two groups of washers just seal the openings on both sides, effectively preventing moisture in the air from entering the surface of the bolt and preventing the arc surface of the bolt from rusting.

[0009] Preferably, the surface of the segment bolt body is slidably connected with a sheath, and an extension ring is fixedly installed on the surface of the sheath. Here, the sheath can protect the arc surface of the bolt from damage during installation. During the production process of the segment, many irregular cement protrusions will be generated inside the bolt connection. When the extension ring on the surface of the sheath is used again, the impurities inside the opening can be scraped clean to prevent the arc bolt from being damaged. At the same time, the installation of the sheath can also isolate the moisture flowing between the segments to prevent the internal bolts from rusting.

[0010] Preferably, the surface of the gasket is provided with a groove, and the extension ring is adapted to the groove. Here, the extension ring can fit with the gasket through the groove, which can not only fix the position of the sheath to prevent the sheath from sliding, but also improve the sealing performance to prevent moisture from entering the interior of the sheath and causing the bolt to rust.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, by setting the segment bolt body, thread groove, nut, cover, connecting ring, and fixing strip structure, the fixing strip is located inside the cover, and the six groups of fixing strips just correspond to the six sides of the nut. When installed, they can just fit on the surface of the nut, so that the entire cover can seal the nut and the thread groove, effectively preventing moisture in the air from adhering to the surface of the nut and preventing the bolt from rusting, thereby improving the overall service life of the bolt. By setting the washer and the baffle structure, the baffles on both sides are squeezed at the same time, so that the two segments are fixed, and the washer can seal the gap between the segment opening and the bolt to prevent moisture in the air from entering the interior of the sheath.

[0013] 2. In the utility model, by providing a sleeve, an extension ring and a groove structure, the sleeve can protect the arc surface of the bolt from damage during installation. During the production process of the pipe segment, many irregular cement protrusions will be generated inside the bolt connection. When the extension ring on the surface of the sleeve is used again, the internal impurities of the opening can be scraped clean to avoid damage to the arc-shaped bolt. At the same time, the installation of the sleeve can also isolate the moisture flowing between the pipe segments to avoid rusting of the internal bolts. The extension ring can fit with the gasket through the groove, which can not only fix the position of the sleeve and prevent the sleeve from sliding, but also improve the sealing to prevent moisture from entering the interior of the sleeve and causing rusting of the bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of a double-headed arc-shaped segment bolt is provided for the utility model;

[0015] Figure 2 A schematic diagram of a baffle of a double-headed arc-shaped segment bolt is provided for the utility model;

[0016] Figure 3 The utility model proposes a double-headed arc segment bolt Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 The utility model provides a schematic diagram of a cover for a double-headed arc-shaped segment bolt.

[0018] Legend:

[0019] 1. Segment bolt body; 2. Sleeve; 3. Thread groove; 4. Washer; 5. Groove; 6. Baffle; 7. Nut; 8. Extension ring; 9. Cover; 10. Connecting ring; 11. Fixing strip; 12. Anti-slip pattern. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] Embodiment 1

[0023] See also Figure 1-4 The utility model provides a technical solution: a double-headed arc segment bolt, comprising a segment bolt body 1, a thread groove 3 is provided on the surface of the segment bolt body 1, a washer 4 is placed on the surface of the thread groove 3, a nut 7 is threadedly connected to the surface of the thread groove 3, a baffle 6 is placed on the surface of the thread groove 3, a cover 9 is placed on the surface of the nut 7, a connecting ring 10 is fixedly connected to the surface of the cover 9, a fixing strip 11 is fixedly installed inside the cover 9, the baffle 6 is located between the washer 4 and the nut 7, when the arc segment bolt is in use, two segments are connected by using a bolt, and then the nut 7 is used to twist and squeeze the baffle 6, and the baffles 6 on both sides are squeezed at the same time, so that the two segments are fixed, the washer 4 can seal the gap between the segment opening and the bolt, and prevent moisture in the air from entering the interior of the sheath 2, causing the nut 7 to rust, thereby reducing the service life, and the surface of the cover 9 is fixedly installed with anti-slip grooves 12, when the bolt is used, the underground air is relatively humid, and the moisture content in the air is relatively high. It is easy to adhere to the surface of the nut 7 and the thread groove 3, causing the surface of the nut 7 or the thread groove 3 to rust, thereby causing it to age or even fall off, greatly increasing the risk of collapse of the pipe segment. The cover 9 can seal the nut 7 and the thread groove 3, effectively preventing moisture in the air from adhering to the surface of the nut 7. The anti-slip pattern 12 can increase the friction between the cover 9 and the hands of the personnel, making it more time-saving and labor-saving for the personnel during installation. The number of fixing strips 11 is six groups, and the six groups of fixing strips 11 correspond to the six planes of the nut 7. The fixing strips 11 are located inside the cover 9, and the six groups of fixing strips 11 just correspond to the six sides of the nut 7. During installation, they can be placed on the surface of the nut 7, improving the use efficiency of the cover 9. The number of washers 4 is two groups, and the two groups of washers 4 are symmetrically distributed on the surface of the pipe segment bolt body 1. The position where the bolts are used in the pipe segment is open, and the two groups of washers 4 just seal the openings on both sides, effectively preventing moisture in the air from entering the surface of the bolts and preventing the arc surface of the bolts from rusting.

[0024] Embodiment 2

[0025] See also Figure 1-2The surface of the segment bolt body 1 is slidably connected with a sleeve 2, and an extension ring 8 is fixedly installed on the surface of the sleeve 2. The sleeve 2 can protect the arc surface of the bolt from damage during installation. During the production process of the segment, many irregular cement protrusions will be generated inside the bolt connection. The extension ring 8 on the surface of the sleeve 2 can scrape out the internal impurities of the opening to prevent the arc-shaped bolt from being damaged. At the same time, the installation of the sleeve 2 can also isolate the moisture flowing between the segments to prevent the internal bolts from rusting. A groove 5 is provided on the surface of the gasket 4, and the extension ring 8 is adapted to the groove 5. The extension ring 8 can fit with the gasket 4 through the groove 5, which can not only fix the position of the sleeve 2 and prevent the sleeve 2 from sliding, but also improve the sealing performance to prevent moisture from entering the interior of the sleeve 2 and causing the bolts to rust.

[0026] Working principle: After the two segments are placed in the appropriate position, first slide the sleeve 2 off the surface of the segment bolt body 1, and then insert the sleeve 2 along the opening inside the segment. When the extension ring 8 on the surface of the sleeve 2 is used again, the internal impurities of the opening can be scraped clean to prevent the arc bolt from being damaged. When the sleeve 2 is placed, the bolt is inserted along the sleeve 2, and then the two washers 4 are placed on the surface of the thread groove 3 of the bolt respectively. When the extension ring 8 fits with the groove 5 inside the washer 4, the baffle 6 is placed on the surface of the thread groove 3, and then the nut 7 is screwed in. Repeat the above operation on the other side, and then tighten the nuts 7 on both sides at the same time, so that the baffles 6 on both sides squeeze the segment until the two segments are stable, and then align the fixing strip 11 inside the cover 9 with the nut 7, slide and connect it to the connecting ring 10 to fit it to the surface of the baffle 6, and the cover 9 is installed. The cover 9 can close the nut 7 and the thread groove 3, effectively preventing moisture in the air from adhering to the surface of the nut 7 and preventing the bolt from rusting, thereby improving the overall service life of the bolt.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A double-headed arc-shaped segment bolt, comprising a segment bolt body (1), characterized in that: A thread groove (3) is provided on the surface of the segment bolt body (1), a washer (4) is placed on the surface of the thread groove (3), a nut (7) is threadedly connected to the surface of the thread groove (3), a baffle (6) is placed on the surface of the thread groove (3), a cover (9) is placed on the surface of the nut (7), a connecting ring (10) is fixedly connected to the surface of the cover (9), and a fixing strip (11) is fixedly installed inside the cover (9).

2. The double-headed curved segment bolt according to claim 1, characterized in that: The baffle (6) is located between the washer (4) and the nut (7).

3. The double-headed curved segment bolt according to claim 1, characterized in that: The surface of the cover (9) is fixedly provided with anti-slip grooves (12).

4. The double-headed curved segment bolt according to claim 1, characterized in that: The number of the fixing strips (11) is six groups, and the six groups of the fixing strips (11) correspond to the six planes of the nut (7).

5. The double-headed curved segment bolt according to claim 1, characterized in that: The washers (4) are provided in two groups, and the two groups of washers (4) are symmetrically distributed on the surface of the segment bolt body (1).

6. The double-headed curved segment bolt according to claim 1, characterized in that: The surface of the segment bolt body (1) is slidably connected with a sleeve (2), and the surface of the sleeve (2) is fixedly mounted with an extension ring (8).

7. The double-headed arc-shaped segment bolt according to claim 6, characterized in that: A groove (5) is provided on the surface of the gasket (4), and the extension ring (8) is adapted to the groove (5).

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