Novel double-end arc-shaped duct piece bolt

Abstract

The utility model relates to the technical field of pipe piece bolts, and provides a novel double-end arc-shaped pipe piece bolt which comprises a first bolt body, connecting pipes are fixedly connected to the two sides of the first bolt body, second bolt bodies are attached to the surfaces of the two connecting pipes, and meshing threads are arranged on the surfaces of the two second bolt bodies and the surface of the first bolt body. Insertion holes are formed in the two sets of connecting pipes, the first bolts and the second bolts can be fixed together by arranging the fixing screws, when one set of second bolts need to be detached to adjust the overall length of the segment bolt, the fixing screws are screwed out of the fixing grooves, and then the second bolts can be pulled out of the first bolts, so that the segment bolt is convenient to disassemble. And the reinforcing ribs are arranged, the reinforcing ribs are made of carbon steel, the overall bending resistance of the first bolt and the second bolt can be enhanced, the reinforcing ribs are hidden in the hidden grooves, and the integrity of the segment bolt cannot be affected.

Description

Technical Field

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

[0002] With the development of the times, people's pursuit of quality of life has gradually improved. In order to facilitate people's travel, tunnels have been built one after another. The strength and durability of each tunnel depends on the innermost shield segments of the tunnel. Since the segments are responsible for supporting the tunnel and resisting soil pressure, their quality is directly related to the safety of the entire tunnel. Segment bolts are needed to combine such important segments.

[0003] An existing patent (publication number CN 206874624 U) discloses a new double-headed curved segment bolt. The bolt comprises a main body comprising a first bolt, a second bolt, and an intermediate bolt. Each of the first, second, and intermediate bolts is curved. One end of the first bolt has a first external thread, and the other end has a first connecting lug. The second bolt has one end with a second external thread, and the other end has a second connecting lug. Nuts are threaded onto each of the first and second external threads, and each nut has a washer on one side. The intermediate bolt has a second connecting lug and a first connecting lug on its left and right ends, respectively. The end of the first bolt near the first connecting lug is rotatably connected to the intermediate bolt via a pin. The intermediate bolts are rotatably connected to each other via a pin. The end of the intermediate bolt is rotatably connected to the side of the second bolt near the second connecting lug via a pin. This design is suitable for widespread promotion.

[0004] However, when the above-mentioned segment bolts are in use, the two sets of bolts are connected by pins. This connection method may be unstable. When the bolts are in use and bear a large gravity, the joints between the bolts may break, thereby affecting the overall use of the bolts. Utility Model Content

[0005] The purpose of the utility model is to provide a new type of double-headed arc-shaped pipe segment bolt, which solves the problem that two groups of bolts are connected by pins in the related art. This connection method is not firm. When the bolts are in use and bear a large gravity, the connection between the bolts may break, thereby affecting the overall use of the bolts.

[0006] The technical solution of the utility model is as follows:

[0007] A new type of double-headed arc-shaped segment bolt, including a first bolt, both sides of the first bolt are fixedly connected with connecting pipes, the surfaces of the two connecting pipes are both attached with second bolts, and meshing threads are arranged on the surfaces of the two second bolts and the first bolt. Jack holes are arranged inside the two connecting pipes, grooves are arranged at the tops of the two second bolts, and fixing screws embedded into the jack holes are threadedly connected inside the two grooves. An oil injection hole is arranged on one side of the groove and located inside the second bolt, and an oil outlet hole is connected to the bottom of the oil injection hole and located inside the second bolt. Hidden grooves are arranged on the surfaces of the first bolt and the second bolt, and reinforcing ribs are fixedly connected inside the hidden grooves.

[0008] Preferably, a nut is threadedly connected to the surface of the meshing thread, a side plate is fixedly connected to one side of the nut, a screw rod is threadedly connected inside the side plate, an embedding rod is fixedly connected to the tail of the screw rod, and a fixing groove is arranged on the surface of the second bolt at one end of the embedding rod.

[0009] Preferably, the connecting pipe and the second bolt have the same bending arc, and the connecting pipe and the second bolt are in a tightly attached state.

[0010] Preferably, the top of the fixing screw is lower than the top of the groove, and the connecting pipe and the fixing screw form a fixed structure inside the second bolt through the jack hole.

[0011] Preferably, the oil injection hole and the oil outlet hole are designed to be interconnected, and the oil injection hole is designed to face vertically downward.

[0012] Preferably, the oil outlet hole is located at the position of the meshing thread.

[0013] Preferably, the reinforcing ribs are designed in an arc shape along the surfaces of the first bolt and the second bolt, and the reinforcing ribs are made of carbon steel.

[0014] Preferably, the reinforcing ribs are completely hidden inside the hidden grooves.

[0015] Preferably, after the nut is tightened, the fixing groove is located on the movement track of the embedding rod, and the embedding rod forms a movement structure through the screw rod.

[0016] Preferably, the sizes of the embedding rod and the fixing groove are adapted to each other.

[0017] The beneficial effects of the present utility model:

[0018] 1. By setting the fixing screw, the first bolt and the second bolt can be fixed together. When it is necessary to disassemble the next set of second bolts to adjust the overall length of the segment bolt, the fixing screw is screwed out from the inside of the fixing groove, and then the second bolt can be pulled out from the inside of the first bolt to achieve the purpose of disassembly. By setting the reinforcing rib, which is made of carbon steel, it can enhance the overall bending resistance of the first bolt and the second bolt, and the reinforcing rib is hidden inside the hidden groove without affecting the integrity of the segment bolt.

[0019] 2. By setting the embedding rod, in order to prevent the nut from loosening at the meshing thread, after the nut is tightened, the screw rod can be rotated to control the horizontal descent of the embedding rod and make the embedding rod embed into the inside of the fixing groove. Through the mutual engagement of the embedding rod and the fixing groove, the nut can be fastened. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following further elaborates on the present utility model in detail in conjunction with the drawings and specific embodiments.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 It is a schematic diagram of the connecting pipe structure of the present utility model;

[0023] Figure 3 It is a schematic diagram of the embedding rod structure of the present utility model;

[0024] Figure 4 It is a schematic diagram of the fixing groove structure of the present utility model.

[0025] In the figure: 1. First bolt; 2. Connecting pipe; 3. Second bolt; 4. Meshing thread; 5. Jack; 6. Groove; 7. Fixing screw; 8. Oil injection hole; 9. Oil outlet hole; 10. Hidden groove; 11. Reinforcing rib; 12. Nut; 13. Side plate; 14. Screw rod; 15. Embedding rod; 16. Fixing groove. [[ID= / / 28]] DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0027] As Figures 1-4As shown in the figure, this embodiment proposes a new type of double-headed arc-shaped segment bolt, which includes a first bolt 1. Both sides of the first bolt 1 are fixedly connected with connecting pipes 2. The surfaces of the two groups of connecting pipes 2 are both attached with second bolts 3. Meshing threads 4 are arranged on the surfaces of the two groups of second bolts 3 and the first bolt 1. Jacks 5 are arranged inside the two groups of connecting pipes 2. Grooves 6 are arranged at the tops of the two groups of second bolts 3. Fixed screws 7 inserted into the jacks 5 are threadedly connected inside the two groups of grooves 6. An oil injection hole 8 located inside the second bolt 3 is arranged on one side of the groove 6. The bottom of the oil injection hole 8 is connected with an oil outlet hole 9 located inside the second bolt 3. Hidden grooves 10 are arranged on the surfaces of the first bolt 1 and the second bolt 3. Reinforcing ribs 11 are fixedly connected inside the hidden grooves 10. Nuts 12 are threadedly connected to the surfaces of the meshing threads 4. A side plate 13 is fixedly connected to one side of the nut 12. A screw rod 14 is threadedly connected inside the side plate 13. An embedding rod 15 is fixedly connected to the tail of the screw rod 14. A fixing groove 16 is arranged on the surface of the second bolt 3 at one end of the embedding rod 15. The bending arc of the connecting pipe 2 is the same as that of the second bolt 3, and the connecting pipe 2 and the second bolt 3 are in a tightly attached state. By setting the connecting pipe 2, it is convenient to insert the connecting pipe 2 into the second bolt 3, so as to facilitate the clamping of the first bolt 1 and the second bolt 3. The top of the fixed screw 7 is lower than the top of the groove 6. The connecting pipe 2 and the fixed screw 7 form a fixed structure inside the second bolt 3 through the jack 5. When it is necessary to disassemble a group of second bolts 3 to adjust the overall length of the segment bolt, the fixed screw 7 is screwed out from the inside of the fixing groove 16, and the second bolt 3 can be pulled out from the inside of the first bolt 1 to achieve the purpose of disassembly. The oil injection hole 8 and the oil outlet hole 9 are designed to be interconnected, and the oil injection hole 8 is designed to face vertically downward. By setting the oil injection hole 8, lubricating oil can be injected from the inside of the oil injection hole 8, so that the lubricating oil overflows from the inside of the oil outlet hole 9. The oil outlet hole 9 is located at the position of the meshing thread 4, which can play a role in lubricating the connection between the nut 12 and the meshing thread 4. The reinforcing ribs 11 are designed in an arc shape along the surfaces of the first bolt 1 and the second bolt 3. The reinforcing ribs 11 are made of carbon steel. By setting the reinforcing ribs 11, the reinforcing ribs 11 are made of carbon steel, which can enhance the overall bending resistance of the first bolt 1 and the second bolt 3. The reinforcing ribs 11 are completely hidden inside the hidden grooves 10. The reinforcing ribs 11 are hidden inside the hidden grooves 10 and will not affect the integrity of the segment bolt. After the nut 12 is tightened, the fixing groove 16 is located on the movement track of the embedding rod 15. The embedding rod 15 forms a movement structure through the screw rod 14. After the nut 12 is tightened, the screw rod 14 can be rotated to control the horizontal descent of the embedding rod 15 and control the embedding rod 15 to be embedded into the fixing groove 16. The sizes of the embedding rod 15 and the fixing groove 16 are adapted to each other. By the mutual clamping of the embedding rod 15 and the fixing groove 16, it can play a role in fastening the nut 12 and prevent the nut 12 from loosening at the meshing thread 4.

[0028] In this embodiment, during use, by setting the fixing screw 7, the first bolt 1 and the second bolt 3 can be fixed together. When it is necessary to disassemble the next set of second bolts 3 to adjust the overall length of the segment bolt, the fixing screw 7 is screwed out from the inside of the fixing groove 16, and then the second bolt 3 can be pulled out from the inside of the first bolt 1 to achieve the purpose of disassembly. By setting the reinforcing rib 11, which is made of carbon steel, the overall bending resistance of the first bolt 1 and the second bolt 3 can be enhanced. Moreover, the reinforcing rib 11 is hidden inside the hidden groove 10 without affecting the integrity of the segment bolt. By setting the oil injection hole 8, lubricating oil can be injected from the inside of the oil injection hole 8 so that the lubricating oil overflows from the inside of the oil outlet hole 9, thereby achieving the effect of lubricating the connection between the nut 12 and the meshing thread 4. By setting the embedding rod 15, in order to prevent the nut 12 from loosening at the meshing thread 4, after the nut 12 is tightened, the screw rod 14 can be rotated to control the horizontal descent of the embedding rod 15 and make the embedding rod 15 embed into the inside of the fixing groove 16. Through the mutual engagement of the embedding rod 15 and the fixing groove 16, the nut 12 can be fastened.

[0029] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A novel double-headed arc-shaped segment bolt, characterized in that, It includes a first bolt (1), both sides of the first bolt (1) are fixedly connected with connecting pipes (2), the surfaces of the two groups of connecting pipes (2) are both attached to a second bolt (3), and meshing threads (4) are arranged on the surfaces of the two groups of second bolts (3) and the first bolt (1). Jack holes (5) are arranged inside the two groups of connecting pipes (2), grooves (6) are arranged at the tops of the two groups of second bolts (3), and fixing screws (7) embedded into the jack holes (5) are threadedly connected inside the two groups of grooves (6). An oil injection hole (8) located inside the second bolt (3) is arranged on one side of the groove (6), and an oil outlet hole (9) located inside the second bolt (3) is connected to the bottom of the oil injection hole (8). Hidden grooves (10) are arranged on the surfaces of the first bolt (1) and the second bolt (3), and reinforcing ribs (11) are fixedly connected inside the hidden grooves (10).

2. The novel double-headed arc-shaped segment bolt according to claim 1, characterized in that, A nut (12) is threadedly connected to the surface of the meshing thread (4), a side plate (13) is fixedly connected to one side of the nut (12), a screw rod (14) is threadedly connected inside the side plate (13), an embedding rod (15) is fixedly connected to the tail of the screw rod (14), and a fixing groove (16) is arranged on the surface of the second bolt (3) at one end of the embedding rod (15).

3. A novel double-headed arc-shaped segment bolt according to claim 1, characterized in that, The connecting pipe (2) and the second bolt (3) have the same bending arc, and the connecting pipe (2) and the second bolt (3) are in a tightly attached state.

4. A novel double-headed arc-shaped segment bolt according to claim 1, characterized in that, The top of the fixing screw (7) is lower than the top of the groove (6), and the connecting pipe (2) and the fixing screw (7) form a fixing structure inside the second bolt (3) through the jack hole (5).

5. A novel double-headed arc-shaped segment bolt according to claim 1, characterized in that, The oil injection hole (8) and the oil outlet hole (9) are designed to be interconnected, and the oil injection hole (8) is designed to face vertically downward.

6. A novel double-headed arc-shaped segment bolt according to claim 1, characterized in that, The oil outlet hole (9) is located at the position of the meshing thread (4).

7. A novel double-headed arc-shaped segment bolt according to claim 1, characterized in that, The reinforcing rib (11) is designed in an arc shape along the surfaces of the first bolt (1) and the second bolt (3), and the reinforcing rib (11) is made of carbon steel.

8. A novel double-headed arc-shaped segment bolt according to claim 1, characterized in that, The reinforcing rib (11) is completely hidden inside the hidden groove (10).

9. The novel double-headed arc-shaped segment bolt according to claim 2, wherein, After the nut (12) is tightened, the fixing groove (16) is located on the movement track of the embedding rod (15), and the embedding rod (15) forms a movement structure through the screw rod (14).

10. A novel double-headed arc-shaped segment bolt according to claim 2, characterized in that, The embedding rod (15) and the fixing groove (16) are adapted in size.

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