Anti-rust duct piece bolt

Abstract

The utility model provides an anti-rust segment bolt, and relates to the technical field of segment bolts, the anti-rust segment bolt comprises a bolt head and a bolt bar, the bolt bar is located at the bottom end of the bolt head, the surface of the bolt head is provided with a receding groove, the inner wall of the receding groove is provided with a clamping groove, the top surface of the bolt bar is provided with a connecting groove, and the connecting groove is connected with the clamping groove. A groove is formed in the inner wall of the connecting groove, a limiting rod is inserted into the groove, the surface of the limiting rod is sleeved with a tension spring, a limiting block is fixedly installed at one end of the limiting rod, a pulling plate is fixedly installed at the other end of the limiting rod, and a limiting piece is fixedly installed on the surface of the limiting rod; the surface of the bolt rod is provided with threads, a clamping block is fixedly installed on the top face of the limiting block, and the clamping block, the clamping groove, the limiting block, the limiting rod, the tension spring, the limiting piece, the pulling plate, the receding groove and the groove are arranged, so that the bolt head and the bolt rod are convenient to disassemble, and disassembly and replacement can be conducted only by pressing the pulling plate.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe segment bolts, in particular to a corrosion-resistant pipe segment bolt. Background Art

[0002] In the construction of pipeline corridors, there is a machine engaged in starting and excavating called a shield machine, which has the functions of excavating and cutting soil, transporting soil and assembling tunnel linings, etc.; but when the shield machine is lining the tunnel, it is assembled with several segments, and there is a screw that plays a connecting and fastening role. The assembly forms a cylindrical pipe, and the segment is the cylindrical wall; during excavation, it can effectively control ground settlement, reduce the impact on ground buildings, and does not affect surface traffic during underwater excavation. The segments are combined together to form a pipeline. This fastening connector designed as a straight line or with a certain arc is the segment bolt. The segment bolt is provided with an external thread, which needs to be used in conjunction with the internal thread in the threaded sleeve on the segment to play the role of fastening the segment.

[0003] Chinese patent publication number CN211343641U discloses a subway segment bolt structure, including a bolt head and a fixing nut, the right side of the bolt head is connected with a bolt rod through a mechanical process, the outer surface of the bolt rod is sleeved with a metal gasket, the outer surface of the bolt rod is coated with an antistatic coating layer, the outer surface of the antistatic coating layer and the side away from the bolt rod are coated with an insulating foam layer, the surface of the insulating foam layer and the side away from the antistatic coating layer are coated with a guide rubber layer, the surface of the guide rubber layer and the side away from the insulating foam layer are coated with a polyvinylidene fluoride layer, and the surface of the polyvinylidene fluoride layer and the side away from the guide rubber layer are coated with an epoxy antistatic coating Material layer, although the segment bolt can be coated with an insulating foam layer on the outer surface of the antistatic coating layer away from the bolt rod, the surface of the insulating foam layer and the side away from the antistatic coating layer are coated with a guide rubber layer, the surface of the guide rubber layer and the side away from the insulating foam layer are coated with a polyvinylidene fluoride layer, and the surface of the polyvinylidene fluoride layer and the side away from the guide rubber layer are coated with an epoxy antistatic coating layer, which has an antistatic effect, but when the segment bolt is used for a long time, it is easy to rust and the like, affecting normal use. At the same time, most common segment bolts are integrated. When the bolt head is damaged, the entire segment bolt needs to be discarded, which is not convenient for maintenance, so it needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0005] The utility model adopts the following technical scheme: a rust-proof segment bolt, comprising a bolt head and a bolt rod, the bolt rod is located at the bottom end of the bolt head, a clearance groove is provided on the surface of the bolt head, a clamping groove is provided on the inner wall of the clearance groove, a connecting groove is provided on the top surface of the bolt rod, a groove is provided on the inner wall of the connecting groove, a limiting rod is inserted inside the groove, a tension spring is sleeved on the surface of the limiting rod, a limiting block is fixedly installed on one end of the limiting rod, a pulling plate is fixedly installed on the other end of the limiting rod, a limiting plate is fixedly installed on the surface of the limiting rod, a thread is provided on the surface of the bolt rod, and a clamping block is fixedly installed on the top surface of the limiting block.

[0006] Preferably, the surfaces of the bolt head and the bolt rod are coated with an anti-rust coating, and the anti-rust coating is red lead anti-rust paint. Here, the anti-corrosion performance can be improved.

[0007] Preferably, the shape and size of the clamping slot and the clamping block match, and the shape and size of the groove and the limiting block match. Here, it is convenient to limit and fix the bolt head and the bolt rod.

[0008] Preferably, one end of the tension spring is fixedly connected to the inner wall of the groove, and the other end of the tension spring is fixedly connected to the surface of the limiting plate. Here, the tension spring can be easily restored to drive the limiting plate to move.

[0009] Preferably, the bolt head and the bolt rod are connected to each other via a stop block and a clearance groove, which facilitates disassembly and maintenance.

[0010] Preferably, a rubber ring is fixedly mounted on the top surface of the bolt rod, and an anti-skid pad is fixedly mounted on the surface of the pull plate. Here, practicality can be improved.

[0011] Preferably, the rubber ring is located on the surface of the connection groove. Here, it is convenient to protect the connection between the bolt head and the bolt rod.

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

[0013] 1. In the utility model, the surfaces of the bolt rod and the bolt head are coated with an anti-rust coating, which can effectively protect the metal surface from erosion by oxygen, moisture and other corrosive media, prolong the service life, and can also be used for a long time in outdoor environments. It has good weather resistance and can prevent the bolt head and the bolt rod from serious rust to a certain extent. The utility model, by setting a waterproof coating, the anti-rust coating is a red lead anti-rust paint, which can effectively protect the metal surface from erosion by oxygen, moisture and other corrosive media, prolong the service life, and has good weather resistance. Blocks, card slots, limit blocks, limit rods, tension springs, limit sheets, pull plates, give way grooves and grooves are also provided to facilitate the disassembly of the bolt head and the bolt rod. When any of the components is damaged, it only needs to press the pull plate to disassemble and replace it, so as to avoid affecting normal use. At the same time, it can also save materials and reduce the cost of use.

[0014] 2. In the utility model, when the pull plate is pressed, the staff's hand first contacts the anti-skid pad. Since the anti-skid pad is made of natural rubber, the friction between the hand and the pull plate can be increased to prevent the staff's hand from slipping when pressing the pull plate and to prevent the hand from being scratched. When pressing the bolt head, the hand presses the bolt head and then presses it downward. The rubber ring can increase the elasticity between the bolt head and the bolt rod to prevent the bolt head from being damaged by excessive force when installing the bolt head. The utility model is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a rust-proof segment bolt is provided for the utility model;

[0016] Figure 2 A cross-sectional view of a rust-proof segment bolt is provided for the utility model;

[0017] Figure 3 The utility model proposes a kind of anti-corrosion segment bolt Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 An exploded diagram of a rust-proof segment bolt is provided for the utility model.

[0019] Legend:

[0020] 1. Bolt head; 2. Bolt rod; 3. Make way groove; 4. Clamping groove; 5. Connecting groove; 6. Groove; 7. Limit rod; 8. Tension spring; 9. Limit block; 10. Pull plate; 11. Limit sheet; 12. Thread; 13. Clamping block; 14. Rubber ring; 15. Anti-slip pad. DETAILED DESCRIPTION

[0021] 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.

[0022] 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.

[0023] Embodiment 1

[0024] See also Figure 1-4 The utility model provides a technical solution: an anti-corrosion segment bolt, comprising a bolt head 1 and a bolt rod 2, wherein the bolt head 1 and the bolt rod 2 are clamped with a stopper 9 and a clearance groove 3, so that the bolt head 1 and the bolt rod 2 can be easily disassembled and replaced, and the surfaces of the bolt head 1 and the bolt rod 2 are coated with an anti-rust coating, which is a red lead anti-rust paint. The anti-rust coating is a red lead anti-rust paint, which is a commonly used anti-corrosion paint, mainly used for anti-rust and anti-corrosion protection of metal surfaces, and has excellent anti-rust properties. It can effectively protect the metal surface from erosion by oxygen, moisture and other corrosive media, and has good weather resistance. The bolt rod 2 is located at the bottom end of the bolt head 1. A clearance groove 3 is provided on the surface of the bolt head 1. A clamping groove 4 is provided on the inner wall of the clearance groove 3. The shape and size of the clamping groove 4 match those of the clamping block 13. The groove 6 matches the shape and size of the limit block 9, which facilitates the clamping of the clamping groove 4 and the clamping block 13, thereby fixing the bolt head 1 and the bolt rod 2. A connecting groove 5 is provided on the top surface of the bolt rod 2, and a groove 6 is provided on the inner wall of the connecting groove 5.

[0025] See also Figure 2-4 A limit rod 7 is inserted into the inside of the groove 6, and a tension spring 8 is sleeved on the surface of the limit rod 7. One end of the tension spring 8 is fixedly connected to the inner wall of the groove 6, and the other end of the tension spring 8 is fixedly connected to the surface of the limit plate 11, so that when the tension spring 8 is restored, the limit plate 11 is driven to move at the same time, so that the limit block 9 enters the yield groove 3. One end of the limit rod 7 is fixedly installed with the limit block 9, and the other end of the limit rod 7 is fixedly installed with a pull plate 10. The surface of the limit rod 7 is fixedly installed with the limit plate 11. The surface of the bolt rod 2 is provided with a thread 12, and the top surface of the limit block 9 is fixedly installed with a clamping block 13.

[0026] Embodiment 2

[0027] See also Figure 2-4A rubber ring 14 is fixedly installed on the top surface of the bolt rod 2, and an anti-skid pad 15 is fixedly installed on the surface of the pull plate 10. The material of the anti-skid pad 15 is natural rubber. The natural rubber material is soft and anti-skid, which can prevent accidents caused by hand slipping when pressing the pull plate 10. The rubber ring 14 is located on the surface of the connecting groove 5, which is convenient for improving the elasticity between the bolt head 1 and the bolt rod 2 to avoid damage to the bolt head 1 and the bolt rod 2.

[0028] Working principle: The surfaces of the bolt rod 2 and the bolt head 1 are coated with an anti-rust coating, which can effectively protect the metal surface from erosion by oxygen, moisture and other corrosive media, prolong the service life, and can also be used for a long time in outdoor environments. It has good weather resistance and can prevent the bolt head 1 and the bolt rod 2 from serious rust to a certain extent. When removing the bolt head 1, manually press the pull plate 10, and the pull plate 10 drives the limit rod 7 to move inward. At the same time, the limit rod 7 drives the limit plate 11 and the limit block 9 to move. When the limit plate 11 moves inward, it drives the tension spring 8 to move inward. At the same time, the limit block 9 drives the block 13 to move. At this time, the block 13 is separated from the slot 4, and then the bolt head 1 is pulled upward, and the bolt The head 1 moves upward in the connecting groove 5, and the clearance groove 3 also moves therewith, until the bottom surface of the limit block 9 touches the bottom end of the clearance groove 3. At this time, the hand pressing the pull plate 10 is released, and the tension spring 8 loses the external force. Driven by the tension of the tension spring 8 itself, the limit piece 11 moves outward, and at the same time, the limit piece 11 drives the limit rod 7 to move, and the limit rod 7 further drives the limit block 9 and the pull plate 10 to move until the spring is completely restored. At this time, the limit block 9 moves to the inside of the groove 6. At this time, the bolt head 1 is released from the limit, and the bolt head 1 is pulled upward again to disengage the bolt head 1 from the connecting groove 5, and the bolt head 1 can be removed from the bolt rod 2. When a new bolt head 1 is replaced, the clearance groove 3 is opened on the surface of the bolt head 1. The position is opposite to the limit block 9, and then the bolt head 1 is pushed into the connecting groove 5, and the bolt head 1 moves downward in the connecting groove 5 until the making way groove 3 is opposite to the limit block 9. At this time, the pull plate 10 is pushed inward, and the pull plate 10 drives the limit rod 7 to move inward again. At the same time, the limit rod 7 drives the limit plate 11 to move, and the limit plate 11 pulls the tension spring 8 inward until the limit block 9 enters the making way groove 3. At this time, the bolt head 1 is pushed downward again to make the card block 13 stick to the top of the card slot 4. At this time, the hand pressing the pull plate 10 is released again. Due to the tension of the tension spring 8 itself, the tension spring 8 drives the limit plate 11 to move outward, the limit plate 11 drives the limit rod 7 to move, the limit rod 7 drives the limit block 9 to move outward, and the limit block 9 drives the card The block 13 moves outward, and the clamping block 13 moves in the clamping groove 4 and is clamped with the clamping groove 4. At this time, the bolt head 1 can be fixed inside the connecting groove 5, and the bolt head 1 and the bolt rod 2 are assembled. When pressing the pull plate 10, the staff's hand first contacts the anti-skid pad 15. Since the anti-skid pad 15 is made of natural rubber, the friction between the hand and the pull plate 10 can be increased to prevent the staff from slipping when pressing the pull plate 10 and to prevent the hand from being scratched. When pressing the bolt head 1, the hand presses the bolt head 1 and then presses it downward. The rubber ring 14 can increase the elasticity between the bolt head 1 and the bolt rod 2 to prevent the bolt head 1 from being damaged by excessive force when installing the bolt head 1.

[0029] 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 corrosion-resistant segment bolt, comprising a bolt head (1) and a bolt shank (2), characterized in that: The bolt rod (2) is located at the bottom end of the bolt head (1), the surface of the bolt head (1) is provided with a clearance groove (3), the inner wall of the clearance groove (3) is provided with a clamping groove (4), the top surface of the bolt rod (2) is provided with a connecting groove (5), the inner wall of the connecting groove (5) is provided with a groove (6), a limiting rod (7) is inserted inside the groove (6), the surface of the limiting rod (7) is sleeved with a tension spring (8), one end of the limiting rod (7) is fixedly installed with a limiting block (9), the other end of the limiting rod (7) is fixedly installed with a pulling plate (10), the surface of the limiting rod (7) is fixedly installed with a limiting plate (11), the surface of the bolt rod (2) is provided with a thread (12), and the top surface of the limiting block (9) is fixedly installed with a clamping block (13).

2. The anti-corrosion segment bolt according to claim 1, characterized in that: The surfaces of the bolt head (1) and the bolt rod (2) are both coated with an anti-rust coating, and the anti-rust coating is red lead anti-rust paint.

3. The anti-corrosion segment bolt according to claim 1, characterized in that: The shape and size of the clamping slot (4) match those of the clamping block (13), and the shape and size of the groove (6) match those of the limiting block (9).

4. The anti-corrosion segment bolt according to claim 1, characterized in that: One end of the tension spring (8) is fixedly connected to the inner wall of the groove (6), and the other end of the tension spring (8) is fixedly connected to the surface of the limiting plate (11).

5. The anti-corrosion segment bolt according to claim 1, characterized in that: The bolt head (1) and the bolt rod (2) are clamped with the clearance groove (3) via a limiting block (9).

6. The anti-corrosion segment bolt according to claim 1, characterized in that: A rubber ring (14) is fixedly mounted on the top surface of the bolt rod (2), and an anti-slip pad (15) is fixedly mounted on the surface of the pull plate (10).

7. The anti-corrosion segment bolt according to claim 6, characterized in that: The rubber ring (14) is located on the surface of the connecting groove (5).

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