Device for quickly disassembling and assembling air duct belt in tunnel and air duct belt fixing structure

Abstract

The utility model discloses a quick dismounting and mounting device for an air duct belt in a tunnel and an air duct belt fixing structure. The rapid dismounting and mounting device for the air duct belt in the tunnel comprises a first rapid dismounting and mounting part and a second rapid dismounting and mounting part which are made of nylon materials, a first bolt lantern ring is arranged at one end of the first rapid dismounting and mounting part, a strip-shaped belt is arranged at the other end of the first rapid dismounting and mounting part, and a plurality of sawteeth are arranged on a belt body of the strip-shaped belt. A second bolt lantern ring is arranged at one end of the second quick disassembly and assembly part, a claw buckle capable of being matched and locked with the sawteeth on the first quick disassembly and assembly part is arranged at the other end of the second quick disassembly and assembly part, and a strip-shaped belt is arranged between the second bolt lantern ring and the claw buckle. Self-locking connection can be quickly formed by the first quick disassembly and assembly part and the second quick disassembly and assembly part, quick installation can be achieved when the air duct belt is fixed, tripping is not prone to occurring after connection, construction is simple, nuts of duct piece bolts do not need to be disassembled again when the air duct belt is disassembled, and the labor intensity of workers is reduced. And only the first quick disassembly and assembly part and the second quick disassembly and assembly part need to be disassembled or cut off.

Description

Technical Field

[0001] The utility model relates to a quick disassembly and assembly device for a ventilation duct belt in a tunnel, which is mainly used for the installation of a multi-fixed-point ventilation belt in long-distance tunnel construction and belongs to the technical field of tunnel construction ventilation facilities. The utility model also relates to a fixing structure of a ventilation duct belt adopting the quick disassembly and assembly device for the ventilation duct belt in the tunnel. Background Art

[0002] With the continuous development of urban rail transit, shield tunneling construction has been widely applied. In shield tunnels to meet the limited space operation, tunnel ventilation facilities are an essential part of the construction. In long-distance tunnel construction, the construction period is long, the ventilation distance is long, the installation distance of the circulating ventilation belt is long, and there are many fixing points for the ventilation belt. Due to the limitation of the tunnel space environment, the ventilation belt in the tunnel is generally arranged on the tunnel roof, and is usually fixed by tying iron wires to the segment bolts on the tunnel roof. During the construction process, the operators need to disassemble the segment bolts and tie the iron wires, which is inconvenient to operate and not easy to tie firmly. Under the action of wind pressure and the humid tunnel environment, the tied iron wires are easy to rust, loosen, and have poor durability, and the ventilation duct belt is easy to fall off, posing a safety hazard. Moreover, during the later stage of tunnel completion and removal of the ventilation belt, the segment bolts need to be removed first, and then the ventilation duct belt is removed. The bolts need to be reinstalled and tightened, the operation is cumbersome, affecting the construction period, and the construction personnel need to work at heights for a long time during the operation process, posing a safety hazard. Summary of the Utility Model

[0003] Aiming at the above defects existing in the prior art, the utility model provides a quick disassembly and assembly device for a ventilation duct belt in a tunnel with good durability, high safety and convenient operation.

[0004] The utility model is realized by the following technical solutions: A quick disassembly and assembly device for a ventilation duct belt in a tunnel, characterized in that: it includes a first quick disassembly and assembly part and a second quick disassembly and assembly part. Both the first quick disassembly and assembly part and the second quick disassembly and assembly part are made of nylon. One end of the first quick disassembly and assembly part is provided with a first bolt sleeve, and the other end of the first quick disassembly and assembly part is a strip-shaped belt, and a plurality of sawteeth are arranged on the belt body of the strip-shaped belt. One end of the second quick disassembly and assembly part is provided with a second bolt sleeve, and the other end of the second quick disassembly and assembly part is provided with a claw buckle that can cooperate with the sawteeth on the first quick disassembly and assembly part to lock. A strip-shaped belt is between the second bolt sleeve and the claw buckle.

[0005] When the utility model is in use, the first quick disassembly and assembly part and the second quick disassembly and assembly part are used in combination. The bolt sleeves of the first quick disassembly and assembly part and the second quick disassembly and assembly part can be respectively sleeved on the segment bolts on the tunnel top and fixed on the segment bolts on the tunnel top through nuts. The strip part of the first quick disassembly and assembly part and the claw of the second quick disassembly and assembly part can be connected together and self-locked and fastened. The air duct belt can be connected to the quick disassembly and assembly device at each fixed point through the top buckle thereof, so as to fix the air duct belt. In the later stage of tunnel construction, when the air duct belt is removed, the first quick disassembly and assembly part and the second quick disassembly and assembly part are disassembled, and then the air duct belt can be removed.

[0006] Further, for the convenience of the quick connection between the first quick disassembly and assembly part and the second quick disassembly and assembly part, the width of the end of the strip of the first quick disassembly and assembly part gradually becomes narrower.

[0007] Further, the width of the strip of the first quick disassembly and assembly part with a serrated part is 10 mm, and the length is 340 mm; the length of the strip part of the second quick disassembly and assembly part is 140 mm, and the width is 10 mm; the thickness of the strip part of the first quick disassembly and assembly part and the thickness of the strip part of the second quick disassembly and assembly part are both 3 mm. The strip has a width of 10 mm and a thickness of 3 mm, with good durability, and the breaking tensile force can reach 55 kg, which can fully meet the requirements for fixing the air duct belt.

[0008] Further, the claw is a releasable structure. The claw adopts a releasable structure, and when disassembling, the strip of the first quick disassembly and assembly part can be loosened from the claw of the second quick disassembly and assembly part.

[0009] The utility model also provides a fixing structure for the air duct belt in the tunnel, which adopts the above-mentioned quick disassembly and assembly device for the air duct belt in the tunnel. The first bolt sleeve of the first quick disassembly and assembly part and the second bolt sleeve of the second quick disassembly and assembly part are respectively sleeved on both ends of the segment bolts on the tunnel arch top. The first bolt sleeve of the first quick disassembly and assembly part and the second bolt sleeve of the second quick disassembly and assembly part are respectively sleeved on both ends of the segment bolts on the tunnel arch top, and are respectively fixed together with the segment bolts and the segments through nuts. The strip of the first quick disassembly and assembly part passes through the metal buckle ring at the top of the air duct belt and then passes through the claw of the second quick disassembly and assembly part and is connected thereto.

[0010] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple. The first quick disassembly and assembly part and the second quick disassembly and assembly part can quickly form a self-locking connection, which is convenient to use. When fixing the air duct belt, quick installation can be achieved, and it is not easy to become unfastened after connection. The quick disassembly and assembly device is made of nylon material, which is acid-resistant, corrosion-resistant, has good insulation, is not easy to age, is light in weight, non-toxic and safe, has good durability, and strong bearing capacity. It is not easy to be damaged and has good durability in the wind pressure and tunnel wet environment, and the air duct belt is not easy to fall off. The present utility model uses the quick disassembly and assembly device to fix the air duct belt, which not only has simple construction and quick installation of the air duct belt, but also when removing the air duct belt, it is not necessary to remove the nuts of the segment bolts again. It only needs to disassemble or cut the first quick disassembly and assembly part and the second quick disassembly and assembly part, which is convenient to remove, can reduce the working time of construction workers climbing high, greatly reduce potential safety hazards, and can shorten the construction period. Compared with the traditional construction method of wire binding, in the case of more fixing points of the ventilation belt in the long-distance ventilation tunnel, the present utility model not only has low material cost, but also can reduce labor costs, and can effectively reduce construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is the front view schematic diagram of the first quick disassembly and assembly part in the present utility model;

[0012] Figure 2 is Figure 1 the top view schematic diagram of;

[0013] Figure 3 is the front view schematic diagram of the second quick disassembly and assembly part in the present utility model;

[0014] Figure 4 is Figure 3 the top view schematic diagram of;

[0015] Figure 5 is the fixed structure schematic diagram of the air duct belt in the present utility model;

[0016] In the figure, 1, the first quick disassembly and assembly part; 2, the second quick disassembly and assembly part; 3, the air duct belt; 4, the segment bolt; 5, the segment; 6, the segment; 7, the metal snap ring; 8, the nut;

[0017] 1.1, the first bolt collar; 1.2, the belt body; 1.3, the serrations;

[0018] 2.1, the claw buckle; 2.2, the belt body; 2.3, the second bolt collar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be further described below through non-limiting embodiments in conjunction with the drawings:

[0020] As shown in the attached Figures 1-4As shown in the figure, a quick disassembly and assembly device for a ventilation duct belt in a tunnel includes a first quick disassembly and assembly part 1 and a second quick disassembly and assembly part 2. Both the first quick disassembly and assembly part 1 and the second quick disassembly and assembly part 2 are made of nylon material, injection molded with UL-approved nylon-66 material, and have a fire rating of 94V-2. One end of the first quick disassembly and assembly part 1 is provided with a first bolt collar 1.1, and the other end of the first quick disassembly and assembly part 1 is a strip-shaped belt. A number of saw teeth 1.3 are provided on the belt body 1.2 of the strip-shaped belt, and the saw teeth 1.3 are wedge-shaped teeth. One end of the second quick disassembly and assembly part 2 is provided with a second bolt collar 2.3, and the other end of the second quick disassembly and assembly part 2 is provided with a claw buckle 2.1 that can cooperate with the saw teeth 1.3 on the first quick disassembly and assembly part 1 for locking. The strip-shaped belt is between the second bolt collar 2.3 and the claw buckle 2.1. The width of the strip-shaped belt of the first quick disassembly and assembly part 1 with saw teeth is 10 mm, and the length is 340 mm; the length of the strip-shaped belt part of the second quick disassembly and assembly part 2 is 140 mm, and the width is 10 mm; the thickness of the strip-shaped belt part of the first quick disassembly and assembly part 1 and the thickness of the strip-shaped belt part of the second quick disassembly and assembly part 2 are both 3 mm. In the present utility model, the belt body 1.2 of the first quick disassembly and assembly part 1 can be inserted into the claw buckle 2.1 of the second quick disassembly and assembly part 2, and self-locking is achieved through the cooperation of the saw teeth 1.3 on the belt body 1.2 and the claw buckle 2.1 of the second quick disassembly and assembly part 2. The structure of the claw buckle 2.1 in the present utility model is prior art, and it can adopt the claw buckle used on the existing cable ties, that is, a through-hole for the belt is provided on the claw buckle 2.1, and a locking tongue that can cooperate with the saw teeth 1.3 on the belt body of the first quick disassembly and assembly part 1 is provided in the through-hole for the belt.

[0021] The claw buckle 2.1 in the present utility model can adopt either the non-loosening type claw buckle in the prior art or the loosening type claw buckle. When the non-loosening type claw buckle is adopted, when removing the ventilation duct belt, the quick disassembly and assembly device can be disassembled by cutting. When the loosening type claw buckle is adopted, when removing the ventilation duct belt, the claw buckle of the quick disassembly and assembly device is loosened, and the first quick disassembly and assembly part 1 and the second quick disassembly and assembly part 2 can be disengaged.

[0022] As shown in the Figure 5 figure, a fixing structure for a ventilation duct belt in a tunnel uses the above-mentioned quick disassembly and assembly device for a ventilation duct belt in a tunnel to fix the ventilation duct belt. The first bolt collar 1.1 of the first quick disassembly and assembly part 1 and the second bolt collar 2.3 of the second quick disassembly and assembly part 2 are respectively sleeved on both ends of the segment bolt 4 on the tunnel crown, and are respectively fixed to the segment through nuts and the segment bolt 4. The strip-shaped belt of the first quick disassembly and assembly part passes through the metal buckle 7 at the top of the ventilation duct belt 3 and then is inserted into the claw buckle of the second quick disassembly and assembly part and connected thereto.

[0023] During construction, as the shield advances, quick-disassembly devices are arranged at intervals according to the longitudinal distance between the fixed points of the air duct belt 3. During the segment assembly process, quick-disassembly devices are set in advance at the top of the tunnel. When installing the segment bolts at the crown, the segment bolt 4 is first inserted into the first bolt collar 1.1 of the first quick-disassembly part 1, and then the segment bolt 4 passes through the segments 5 and 6. Before installing the nut of the segment bolt, the second bolt collar 2.3 of the second quick-disassembly part 2 is sleeved on the segment bolt 4, and then the nut 8 of the segment bolt is installed, and it is ensured that the gasket of the segment bolt is completely closely attached to the bolt collar of the quick-disassembly device. Finally, the bolt is tightened to meet the design requirements.

[0024] When installing the air duct belt 3, the belt body 1.2 of the first quick-disassembly part 1 penetrates into the metal snap ring 7 at the top of the air duct belt 3, and then the leading end of the belt body 1.2 of the first quick-disassembly part 1 penetrates into the claw buckle of the second quick-disassembly part 2, ensuring that the belt body is closely attached to the metal snap ring. The leading end of the belt body 1.2 is tightened for fixation, and finally the excess leading end is cut off to keep it tidy.

[0025] When removing the air duct belt 3, the quick-disassembly device can be disassembled or broken open, and there is no need to disassemble the segment bolts and nuts. After the air duct belt is removed, the excess belt body is cut off to complete.

[0026] Other parts in this embodiment are all prior arts and will not be elaborated here.

Claims

1. A tunnel air duct with a quick disassembly and assembly device, characterized by: It includes a first quick-detachable part and a second quick-detachable part, both of which are made of nylon, a first bolt collar is arranged at one end of the first quick-detachable part, the other end of the first quick-detachable part is a strip belt, a plurality of saw teeth are arranged on the strip belt, a second bolt collar is arranged at one end of the second quick-detachable part, a claw buckle which can be locked with the saw teeth on the first quick-detachable part is arranged at the other end of the second quick-detachable part, and a strip belt is arranged between the second bolt collar and the claw buckle.

2. The quick disassembly and assembly device of the air duct in the tunnel according to claim 1 is characterized in that: The width of the strip of the first quick-detachable component gradually narrows at the end thereof.

3. The quick disassembly and assembly device of the air duct in the tunnel according to claim 1 is characterized in that: The strip belt of the first quick-detachable component has a serrated portion with a width of 10 mm and a length of 340 mm; the strip belt portion of the second quick-detachable component has a length of 140 mm and a width of 10 mm; the thickness of the strip belt portion of the first quick-detachable component and the thickness of the strip belt portion of the second quick-detachable component are both 3 mm.

4. The quick disassembly and assembly device of the air duct in the tunnel according to claim 1, 2 or 3, characterized in that: The claw buckle is a releasable structure.

5. A tunnel air duct with a fixed structure, characterized by: A quick disassembly device for an air duct belt in a tunnel as described in any one of claims 1 to 4 is used, wherein a first bolt collar of a first quick disassembly component and a second bolt collar of a second quick disassembly component are respectively mounted on both ends of segment bolts of a tunnel vault, and are fixed together with the segment bolts and the segments by nuts, respectively; the strip belt of the first quick disassembly component passes through a metal buckle at the top of the air duct belt and then passes through a claw buckle of the second quick disassembly component and is connected thereto.

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