Auxiliary fixing tool for circumferential blind pipe

Abstract

The utility model provides an annular blind pipe auxiliary fixing tool which comprises a cross rod, two ends of the cross rod are connected with a pair of clamping rings capable of clamping an annular blind pipe, the two pairs of clamping rings located at the two ends are arranged in parallel, two ends of the clamping rings are connected with supporting feet in the radial direction, the supporting feet located on the two sides are symmetrically arranged along the central axis of the clamping rings, and the supporting feet and the cross rod are arranged perpendicularly. The device is convenient to operate, can achieve auxiliary fixing of the annular blind pipe according to the actual situation of a construction site, can be well suitable for fixing annular blind pipes of different specifications, is good in fixing effect and convenient to machine, and can well achieve tight attachment of the annular blind pipe and a secondary lining waterproof plate.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to a circumferential blind pipe auxiliary fixing tool. Background Technology

[0002] Circular blind pipes are geosynthetic materials used in tunnel drainage systems, typically placed behind the tunnel lining. Their main function is to divert groundwater or seepage water into the longitudinal drainage system, thereby preventing water accumulation and leakage within the tunnel. Circular blind pipes are usually made of materials such as synthetic fibers, plastics, or synthetic rubber, and have high surface permeability and internal water permeability.

[0003] Circular blind pipes are mainly used in tunnel engineering, especially in areas with abundant groundwater or significant seepage. By installing circumferential blind pipes, groundwater can be effectively drained, reducing the hydrostatic pressure behind the lining and preventing lining leakage. Circumferential blind pipes are generally arranged circumferentially along the surface of the initial tunnel support, with the spacing determined based on geological conditions and seepage. During construction, the blind pipes need to be wrapped with geotextile and fixed to the initial support using methods such as nailing. However, this construction method cannot ensure good adhesion between the circumferential blind pipes and the secondary lining waterproofing membrane, thus affecting drainage and pipe fixation. Utility Model Content

[0004] To address the problems existing in the prior art, a circumferential blind pipe auxiliary fixing tool is provided. This device is easy to operate and can achieve auxiliary fixing of circumferential blind pipes according to the actual conditions of the construction site. It is also well-suited for fixing circumferential blind pipes of different specifications, providing good fixing effect, easy processing, and achieving a good tight fit between the circumferential blind pipe and the secondary waterproof lining membrane.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] This utility model proposes an auxiliary fixing tool for circumferential blind pipes, including a crossbar. The two ends of the crossbar are connected to a pair of retaining rings that can clamp the circumferential blind pipe. The two pairs of retaining rings at both ends are arranged in parallel. The two ends of the retaining rings are connected to support feet in the radial direction. The support feet on both sides are symmetrically arranged along the central axis of the retaining rings. The support feet are perpendicular to the crossbar.

[0007] Preferably, the retaining ring and the crossbar are rotatably connected, and a pair of retaining rings cooperate to form a clamping hole for clamping the circumferential blind tube.

[0008] Preferably, a rack that is slidably connected to the crossbar is provided between a pair of retaining rings, and a gear is coaxially fixedly connected to the retaining rings, with the two sides of the rack meshing with two gears respectively.

[0009] Preferably, the lower end of the rack is located inside the clamping hole. When the rack moves upward, it can drive the retaining rings on both sides to rotate inward, thereby clamping the circumferential blind tube.

[0010] Preferably, the rack has a locking hole, the crossbar is fixedly connected to a vertical bar, and the vertical bar has several insertion holes.

[0011] Preferably, it also includes a telescopic rod, one end of which is connected to an upper locking rod that can slide into a locking hole, and the other end of which is connected to a lower locking rod that can slide into an insertion hole.

[0012] Preferably, the shortest length of the telescopic rod is greater than the shortest distance from the insertion hole to the rack.

[0013] Preferably, the crossbar includes an outer cylinder and an inner cylinder, the outer cylinder is rotatably connected to a nut, and the nut and the nut are threaded together.

[0014] Preferably, a sliding rod is fixedly connected inside the inner cylinder, the sliding rod is located inside the outer cylinder, the sliding rod and the outer cylinder are slidably connected, and the sliding rod can freely pass through the nut.

[0015] Preferably, the vertical rods on both sides are fixedly connected to handles, and the handles on both sides form notches.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model is equipped with retaining rings. The retaining rings on both sides cooperate with each other to fix the circumferential blind pipe. The handle part is provided with a notch, which facilitates the storage and use of auxiliary tools. The crossbar is made of steel bars, which has a good fixing effect and is easy to operate. It can be used to assist in fixing the circumferential blind pipe according to the actual conditions of the construction site. The retaining rings can be fixed to both sides of the crossbar by welding, which is convenient to process and can achieve a good tight fit between the circumferential blind pipe and the secondary waterproof membrane.

[0018] 2. In this utility model, the retaining ring and the crossbar can be rotatably connected. After the circumferential blind tube contacts the rack, the tool is pressed down further, and the rack can drive the retaining rings on both sides to rotate inward, thereby clamping the circumferential blind tube. It can be well applied to the fixing of circumferential blind tubes of different specifications. At the same time, the two ends of the telescopic rod are inserted into the insertion hole and the retaining hole, thereby limiting the position of the rack. It can very conveniently limit the rack without complicated operation, which is convenient for use on the construction site.

[0019] 3. This utility model adopts a combination of opening and telescopic rod, which is easy to process. Only the vertical rod and the rack need to be opened. The telescopic rod can increase the range of motion, making it easy for both ends of the telescopic rod to be inserted into the insertion hole and the locking hole, and it is not affected by the opening error. When fixing the waterproof plate at the blind pipe, it is easy for the secondary waterproof plate to be tightly attached to the circumferential blind pipe. After the tight attachment, the secondary waterproof plate and the circumferential blind pipe are welded firmly with the dense hot melt gasket. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a three-dimensional view of the entire utility model;

[0022] Figure 2 This is an overall side view of the present invention;

[0023] Figure 3 This is an overall side view of the present invention (in its working state);

[0024] Figure 4 yes Figure 1 Schematic diagram of the middle crossbar section.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Vertical rod; 2. Horizontal rod; 21. Outer cylinder; 22. Inner cylinder; 23. Nut; 3. Handle; 4. Snap ring; 5. Support foot; 6. Clamping hole; 7. Rack; 8. Gear; 9. Insertion hole; 10. Snap hole; 11. Telescopic rod; 12. Upper clamping rod; 13. Lower clamping rod; 14. Notch. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] Example 1

[0029] like Figure 1 As shown, this embodiment proposes an auxiliary fixing tool for circumferential blind pipes, including a crossbar 2. A pair of retaining rings 4 capable of clamping the circumferential blind pipe are connected to both ends of the crossbar 2. The two pairs of retaining rings 4 at both ends are arranged in parallel. Support legs 5 are connected to both ends of the retaining rings 4 radially. The support legs 5 on both sides are symmetrically arranged along the central axis of the retaining rings 4. The support legs 5 are perpendicular to the crossbar 2.

[0030] The two ends of the horizontal bar 2 are fixedly connected to the vertical bars 1. The vertical bars 1 on both sides are fixedly connected to the handles 3. The handles 3 on both sides form notches 14. The vertical bars 1 on both sides are arranged in parallel, and the handles 3 on both sides are located on the same horizontal line.

[0031] The two retaining rings 4 cooperate with each other to fix the circumferential blind tube. The handle 3 is provided with a notch 14, which facilitates the storage and use of auxiliary tools. The handle 3 and the vertical rod 1 can be welded together, and the vertical rod 1 and the horizontal rod 2 can be welded together. Alternatively, the handle 3, the vertical rod 1 and the horizontal rod 2 can be formed by bending steel bars.

[0032] All auxiliary tools are made of steel bars, which provides good fixation and is easy to operate. They can be processed according to the actual conditions of the construction site to achieve auxiliary fixation of the circumferential blind pipe. The retaining ring 4 can be fixed parallel to both sides of the crossbar 2 by welding, which is easy to process and can achieve a good tight fit between the circumferential blind pipe and the secondary waterproof membrane.

[0033] Example 2

[0034] Reference Appendix Figures 2-3 The other structures are the same as in Embodiment 1. The difference is that in this embodiment, the use of auxiliary tools for different specifications of circumferential blind tubes is taken into account.

[0035] The crossbar 2 is rotatably connected to a rotating shaft, and the rotating shaft is fixedly connected to a retaining ring 4. A pair of retaining rings 4 cooperate to form a clamping hole 6 for clamping the circumferential blind tube. A rack 7 that is slidably connected to the crossbar 2 is provided between the pair of retaining rings 4. A gear 8 is fixedly connected to the rotating shaft, and the two sides of the rack 7 are respectively meshed with the two gears 8.

[0036] The rack 7 can only slide vertically. The rack 7 can be slidably connected to the vertical rod 1. The lower end of the rack 7 is located in the clamping hole 6. When the rack 7 moves upward, it can drive the retaining rings 4 on both sides to rotate inward, thereby clamping the circumferential blind tube. This allows the auxiliary tool to fall into the circumferential blind tube and automatically fix the circumferential blind tube, making the operation more convenient.

[0037] The rack 7 has a locking hole 10, the crossbar 2 is fixedly connected to the vertical bar 1, the vertical bar 1 has several insertion holes 9, and also includes a telescopic rod 11. One end of the telescopic rod 11 is fixedly connected to an upper locking rod 12 that can slide into the locking hole 10, and the other end of the telescopic rod 11 is fixedly connected to a lower locking rod 13 that can slide into the insertion hole 9.

[0038] The shortest length of the telescopic rod 11 is greater than the shortest distance from the insertion hole 9 to the rack 7. Therefore, the rack 7 will not jump over the insertion hole 9 where the lower locking rod 13 is inserted. The telescopic rod 11 is provided for two main purposes. Firstly, the telescopic rod 11 can extend and retract to a certain extent, which makes it easier for both ends of the telescopic rod 11 to slide into the insertion hole 9 and the locking hole 10. This allows for fixing the rack 7 at any position without considering the height of the locking hole 10 or the opening error of the insertion hole 9, and is not affected by the opening error.

[0039] On the other hand, when fixing the waterproof membrane at the blind pipe, it is convenient for the secondary waterproof membrane to be tightly attached to the circumferential blind pipe. After the tight attachment, the secondary waterproof membrane and the circumferential blind pipe are promptly welded together with the dense hot melt gasket. The setting of the telescopic rod 11 can provide a certain amount of movement for the circumferential blind pipe, so as not to damage the circumferential blind pipe due to construction errors, and to give the circumferential blind pipe a certain amount of movement space. At the same time, it should be noted that the extension range of the telescopic rod 11 is limited, and it can only move within a small range, so as not to affect the normal welding work.

[0040] After the circumferential blind tube comes into contact with the rack 7, the tool is pressed down further. The rack 7 can drive the retaining rings 4 on both sides to rotate inward, thereby clamping the circumferential blind tube. This method is suitable for fixing circumferential blind tubes of different specifications. At the same time, the two ends of the telescopic rod 11 are inserted into the insertion hole 9 and the retaining hole 10, thereby limiting the position of the rack 7. This method can easily limit the position of the rack 7 without complicated operations, making it convenient for use on the construction site.

[0041] Conventional methods, such as using a ratchet and pawl combination, are difficult to process and install. The pawl also cannot effectively connect to the vertical rod 1, and relying solely on the pawl to limit the ratchet's position provides poor fixation of the rack. In contrast, this application uses a method of opening holes and using a telescopic rod 11, which facilitates processing. Only opening holes in the vertical rod 1 and the rack 7 is required, making processing very convenient and eliminating the need to consider fit issues. Furthermore, the telescopic rod 11 provides a certain degree of error in the opening, further facilitating processing and making it suitable for on-site applications.

[0042] Example 3

[0043] Reference Appendix Figure 4 The other structures are the same as in Embodiment 1, except that the adjustment of the crossbar length is taken into account in this embodiment.

[0044] The crossbar 2 includes an outer cylinder 21 and an inner cylinder 22. The outer cylinder 21 is rotatably connected to a nut 23. The nuts 23 are threaded together. By rotating the nut 23, the inner cylinder 22 can be moved, thereby adjusting the length of the crossbar 2. One pair of retaining rings 4 are connected to the outer cylinder 21, and the other pair of retaining rings 4 are connected to the inner cylinder 22.

[0045] A sliding rod is fixedly connected inside the inner cylinder 22. The sliding rod is located inside the outer cylinder 21 and is slidably connected to the outer cylinder 21. The diameter of the sliding rod is smaller than the inner diameter of the nut 23, so the sliding rod can freely pass through the nut 23. The sliding rod is designed so that the inner cylinder 22 can only slide and will not rotate.

[0046] The specific working process is as follows: By rotating nut 23, the length of crossbar 2 is adjusted. The auxiliary tool is placed on the circumferential blind tube. By pressing down the auxiliary tool, rack 7 comes into contact with the circumferential blind tube. After pressing down the auxiliary tool, rack 7 slides upward relative to crossbar 2. Rack 7 drives circumferential ring 4 to rotate through gear 8. Circumferential ring 4 clamps the circumferential blind tube.

[0047] Insert the upper locking rod 12 of the telescopic rod 11 into the locking hole 10, and insert the lower locking rod 13 of the telescopic rod 11 into the insertion hole 9. When selecting the position of the insertion hole 9, ensure that the height of the upper locking rod 12 is higher than that of the lower locking rod 13, so that the telescopic rod 11 is set at an angle. Alternatively, the upper locking rod 12 can pass through the locking hole 10, and the lower locking rod 13 can pass through the insertion hole 9. At this time, the ends of the upper locking rod 12 and the lower locking rod 13 that are protruding are threaded with a locking nut. The locking nut prevents the upper locking rod 12 and the lower locking rod 13 from protruding. Then, by manually pressing down, use an auxiliary tool to tightly attach the circumferential blind pipe to the secondary waterproof lining membrane. After tightly attaching, promptly weld the secondary waterproof lining membrane and the circumferential blind pipe with a dense hot melt washer to secure them, thus achieving the connection between the secondary waterproof lining membrane and the circumferential blind pipe.

[0048] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A tool for assisting the fixing of a circumferential blind tube, comprising a crossbar (2), characterized in that, The crossbar (2) has a pair of retaining rings (4) at both ends that can clamp the circumferential blind tube. The two pairs of retaining rings (4) at both ends are arranged in parallel. The two ends of the retaining rings (4) are connected to support feet (5) in the radial direction. The support feet (5) on both sides are arranged symmetrically along the central axis of the retaining rings (4). The support feet (5) and the crossbar (2) are arranged perpendicularly.

2. The tool according to claim 1, wherein The retaining ring (4) and the crossbar (2) are rotatably connected, and a pair of retaining rings (4) cooperate with each other to form a clamping hole (6) for clamping the circumferential blind tube.

3. The tool according to claim 2, wherein A rack (7) is provided between a pair of retaining rings (4) and is slidably connected to the crossbar (2). The retaining rings (4) are coaxially fixedly connected to gears (8), and the two sides of the rack (7) are respectively meshed with the two gears (8).

4. The tool according to claim 3, wherein The lower end of the rack (7) is located inside the clamping hole (6). When the rack (7) moves upward, it can drive the retaining rings (4) on both sides to rotate inward, thereby clamping the circumferential blind tube.

5. The tool according to claim 3, wherein The rack (7) has a locking hole (10), the crossbar (2) is fixedly connected to the vertical bar (1), and the vertical bar (1) has several insertion holes (9).

6. The tool according to claim 5, wherein It also includes a telescopic rod (11), one end of which is connected to an upper locking rod (12) that can slide into the locking hole (10), and the other end of which is connected to a lower locking rod (13) that can slide into the insertion hole (9).

7. The tool according to claim 6, wherein The shortest length of the telescopic rod (11) is greater than the shortest distance from the insertion hole (9) to the rack (7).

8. The tool according to claim 1, wherein The crossbar (2) includes an outer cylinder (21) and an inner cylinder (22). The outer cylinder (21) is rotatably connected to a nut (23), and the nut (23) and the nut (22) are threaded together.

9. The tool according to claim 8, wherein A sliding rod is fixedly connected inside the inner cylinder (22). The sliding rod is located inside the outer cylinder (21). The sliding rod and the outer cylinder (21) are slidably connected. The sliding rod can freely pass through the nut (23).

10. The tool according to claim 5, wherein The vertical rods (1) on both sides are fixedly connected to handles (3), and the handles (3) on both sides form notches (14).

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