Connecting structure of ventilation hose for tunnel construction

Abstract

The utility model discloses a connecting structure of ventilation hoses for tunnel construction, which belongs to the technical field of ventilation equipment for tunnel construction and comprises a plurality of ventilation hoses, a welding rod is spirally wound on a hose body of each ventilation hose, and each ventilation hose penetrates through a double-strand iron wire to be hoisted through a plurality of hoisting rings above. A connecting structure is arranged between every two adjacent ventilation hoses in the multiple ventilation hoses, each connecting structure comprises an annular partition plate, the two sides of each annular partition plate communicate with stretching sleeves, and the stretching sleeves stretch into pipelines of the ventilation hoses on the two sides correspondingly; a spiral groove is formed in the outer side face of the extending sleeve in the axial direction of the extending sleeve. The connection structure extends into the ventilation hoses on the two sides to achieve binding connection, the sealing performance is good, meanwhile, a special hanging frame assembly is arranged, the connection structure can be hung on a double-strand iron wire and serves as a middle stable hanging ring structure, connection continuity of the two ventilation hoses is guaranteed, and safety and stability are better.

Description

Technical Field

[0001] This utility model relates to the technical field of ventilation equipment for tunnel construction, and more specifically, to a connection structure for a ventilation hose used in tunnel construction. Background Technology

[0002] During tunnel construction, it is necessary to extract dusty air from the working area inside the tunnel to ensure the safety of the working environment for the workers inside. Spiral ventilation hoses are often used, connected to external exhaust fans for ventilation. Spiral ventilation hoses have a simple structure, with tightly welded spiral areas on the hose body. The spiral seams are not easy to tear and form clamps, which control the expansion of the coated fabric under stress, resulting in uniform airflow and less resistance and leakage.

[0003] In the actual installation of ventilation hoses, when the tunnel construction distance is long, the length of a single ventilation hose is insufficient to extend into the internal working area. In this case, it is necessary to connect two or more ventilation hoses to meet the ventilation needs of tunnel construction. The existing ventilation hose connection structure has the following problems: First, the connection sealing is not good enough, and air leakage is prone to occur at the connection point, causing the hoses on both sides to bulge. Second, the connector at the connection point is far from the lifting rings of the ventilation hoses on both sides, and there is no special hanging bracket component designed, resulting in large shaking in the connection area and insufficient safety and stability. Utility Model Content

[0004] The purpose of this utility model is to provide a connection structure for ventilation hoses used in tunnel construction. This connection structure achieves a tight connection by extending into the ventilation hoses on both sides, resulting in good sealing. It also features a special hanging bracket assembly that can be hung on a double-strand iron wire, acting as a stable hanging ring structure in the middle to ensure the continuity of the connection between the two ventilation hoses and improve safety and stability.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A connection structure for ventilation hoses used in tunnel construction includes several ventilation hoses, each with a welding rod spirally wound around its body and each hose suspended by a double-strand iron wire through several lifting rings at the top. Adjacent ventilation hoses are connected by a connection structure, which includes an annular partition. Both sides of the annular partition are connected to insert sleeves that extend into the interior of the ventilation hoses on both sides. The outer surface of each insert sleeve is machined with a spiral groove along its axial direction.

[0007] As a further optimization of this solution, the upper ends of both sides of the annular partition are provided with mounting rods extending outwards. The length of the mounting rods is the same as the length of the sleeve. The surface of the mounting rods is provided with several spaced through holes, and a sealing steel wire rope passes through the inside of the several spaced through holes. The sealing steel wire rope is wound downwards and aligned to enter the spiral groove, pressing the ventilation hose into the spiral groove to achieve a spiral seal at the connection position of the ventilation hose.

[0008] As a further optimization of this solution, both ends of the sealing wire rope are threaded and tightened by screwing nuts into the threads. Anti-slip pads are nested on the threads of the sealing wire rope inside the nuts.

[0009] As a further optimization of this solution, the top surface of the annular partition is machined with two symmetrical sliding groove plates. The sliding groove inside the sliding groove plate is inserted into the inverted concave lifting top frame. The inverted concave lifting top frame is limited by the locking bolts on the outer side of the two sliding groove plates. The upper end of the inverted concave lifting top frame is pushed into the bottom of the double iron wire.

[0010] As a further optimization of this solution, the upper surface of the inverted concave lifting top frame is machined with two wire holes, and steel wires pass through the two wire holes. The upper part of the steel wire is wrapped with double strand iron wire, and the lower ends of the steel wire are fixed by welding plates.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0012] In this invention, the sleeves are designed to extend into the ventilation hoses on both sides, and the sealing steel wire rope is wound downwards into the spiral groove to press the ventilation hose into the spiral groove, thus achieving a spiral seal at the connection point of the ventilation hose. The sealing effect is good and air leakage is not likely to occur.

[0013] This invention utilizes a sliding groove plate, an inverted concave lifting top frame, and steel wires to achieve mutual limiting connection between the annular partition and the double-strand iron wire, serving as a stable lifting ring structure in the middle. This ensures the continuity of the connection between the two ventilation hoses, resulting in better safety and stability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram showing the disassembled connection structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the extension sleeve structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the mounting rod connection structure of this utility model;

[0017] Figure 4This is a schematic diagram of the inverted concave lifting top frame connection structure of this utility model;

[0018] In the diagram: 1. Ventilation hose; 2. Welding rod; 3. Lifting ring; 4. Double-strand iron wire; 5. Annular partition; 6. Insertion sleeve; 7. Spiral groove; 8. Mounting rod; 9. Through hole; 10. Sealing steel wire rope; 11. Anti-slip pad; 12. Nut; 13. Thread; 14. Slide plate; 15. Inverted concave lifting top frame; 16. Locking bolt; 17. Steel wire; 18. Welding sheet. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0020] To address the issue of insufficient sealing in existing connections, which leads to air leakage at the connection points and causes the hoses on both sides to bulge;

[0021] like Figure 1 As shown, this application includes several ventilation hoses 1, wherein each ventilation hose 1 is spirally wound with welding rods 2 and each ventilation hose 1 is hoisted by passing through several lifting rings 3 above and double-strand iron wires 4. A connecting structure is provided between adjacent ventilation hoses 1.

[0022] like Figure 2 As shown, the connection structure includes an annular partition 5, and both sides of the annular partition 5 are connected to insert sleeves 6, which are inserted into the pipes of the ventilation hoses 1 on both sides respectively.

[0023] like Figure 3 As shown, a spiral groove 7 along the axial direction of the sleeve 6 is machined on the outer side of the sleeve 6. An installation rod 8 is provided on the upper side of both sides of the annular partition 5. The length of the installation rod 8 is the same as the length of the sleeve 6. Several spaced through holes 9 are opened on the surface of the installation rod 8, and a sealing steel wire rope 10 is passed through the several spaced through holes 9. The sealing steel wire rope 10 is wound downward and aligned into the spiral groove 7 to press the ventilation hose 1 into the spiral groove 7 to achieve a spiral seal at the connection position of the ventilation hose 1. Both ends of the sealing steel wire rope 10 are machined with threads 13 and are screwed into the threads 13 by nuts 12 for tightening. Anti-slip pads 11 are nested on the threads 13 of the sealing steel wire rope 10 inside the nuts 12.

[0024] Specifically, the sleeve 6 extends into the ventilation hoses 1 on both sides to form a spiral sealing base. Combined with the sealing wire rope 10, it winds downward into the spiral groove 7 to press the ventilation hose 1 into the spiral groove 7, thus achieving a spiral seal at the connection position of the ventilation hose 1. There are multiple continuous spiral sealing annular areas, resulting in a good sealing effect and reducing the likelihood of air leakage.

[0025] To address the issue that the existing connection points are too far from the hanging rings of the ventilation hoses on both sides, and there is no dedicated hanging bracket component, resulting in significant shaking in the connection area and insufficient safety and stability;

[0026] like Figure 3 and Figure 4 As shown, the top surface of the annular partition 5 is machined with two symmetrical sliding plates 14. The sliding groove inside the sliding plate 14 is inserted into the inverted concave lifting top frame 15. The inverted concave lifting top frame 15 is limited by the locking bolts 16 on the outer side of the two sliding plates 14. The upper end of the inverted concave lifting top frame 15 is pushed into the lower part of the double-strand iron wire 4. The upper end of the inverted concave lifting top frame 15 is machined with two wire holes and steel wire 17 passes through the two wire holes. The double-strand iron wire 4 is wrapped and tied tightly above the steel wire 17, and both ends below the steel wire 17 are welded and fixed by welding pieces 18.

[0027] Specifically, based on the height of the double-strand iron wire 4, the relative positions of the inverted concave lifting top frame 15 and the two sliding plates 14 are adjusted so that the upper surface of the inverted concave lifting top frame 15 pushes into the lower part of the double-strand iron wire 4, and the double-strand iron wire 4 is tightly wrapped and bound at the top by the steel wire 17, and fixed at the bottom by welding plates 18. This can realize the mutual limiting connection between the annular partition 5 and the double-strand iron wire 4, which acts as a stable lifting ring structure in the middle. When the connecting part is far away from the lifting ring 3 of the ventilation hose 1 on both sides, the continuity of the connection of the two ventilation hoses 1 is ensured, and the safety and stability are better.

[0028] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0029] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A connection structure for ventilation hoses used in tunnel construction, comprising a plurality of ventilation hoses, wherein each ventilation hose has a welding rod spirally wound around its body and each ventilation hose is hoisted by passing through a plurality of lifting rings above and threading a double strand of iron wire, characterized in that: The ventilation hoses are provided with a connecting structure between adjacent ventilation hoses. The connecting structure includes an annular partition. Both sides of the annular partition are connected to an insert sleeve. The insert sleeves extend into the pipes of the ventilation hoses on both sides. The outer side of the insert sleeve is machined with a spiral groove along the axial direction of the insert sleeve.

2. The connection structure of a ventilation hose for tunnel construction according to claim 1, characterized in that: The annular partition has mounting rods on both sides of the upper end facing outwards. The length of the mounting rods is the same as the length of the sleeve. The mounting rods have several spaced through holes, and a sealing steel wire rope passes through the inside of the several spaced through holes. The sealing steel wire rope is wound downwards and aligned into the spiral groove, pressing the ventilation hose into the spiral groove to achieve a spiral seal at the connection position of the ventilation hose.

3. The connection structure of a ventilation hose for tunnel construction according to claim 2, characterized in that: Both ends of the sealing wire rope are threaded and tightened by screwing nuts into the threads. Anti-slip pads are nested on the threads of the sealing wire rope inside the nuts.

4. The connection structure of a ventilation hose for tunnel construction according to claim 3, characterized in that: The top surface of the annular partition plate is machined with two symmetrical sliding groove plates. The sliding groove inside the sliding groove plate is inserted into the inverted concave lifting top frame. The inverted concave lifting top frame is limited by the locking bolts on the outer side of the two sliding groove plates. The upper end of the inverted concave lifting top frame is pushed into the bottom of the double iron wire.

5. The connection structure of a ventilation hose for tunnel construction according to claim 4, characterized in that: The upper surface of the inverted concave lifting frame is machined with two wire holes, and steel wires pass through the two wire holes. The upper part of the steel wire is wrapped with two strands of iron wire, and the lower ends of the steel wire are fixed by welding plates.

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