Narrow pipeline plugging template structure and rapid pipeline plugging method

Abstract

The invention discloses a narrow pipeline plugging template structure and a rapid pipeline plugging method, the narrow pipeline plugging template structure comprises two oppositely arranged circular templates, the outer edges of the two circular templates are connected with a supporting ring plate, and a containing ring groove is formed between the circumferential surface of the supporting ring plate and the outer edges of the two circular templates; the expansion air bag ring is contained in the containing ring groove; a plurality of assembling holes are formed in the circumferential surfaces of the locking rods and the circular template, the assembling holes are formed in the circumferential direction of the circular template at intervals, the locking rods are elastically installed in the assembling holes, sealing pins are detachably installed at orifices of the assembling holes, and after the sealing pins are detached, the locking rods extend out of the assembling holes and abut against the inner wall of the narrow and small pipeline to lock the narrow and small pipeline. After the locking rod locks the narrow pipeline, the expansion air bag ring is inflated and expanded and abuts against the inner wall of the narrow pipeline so as to block a gap between the outer edge of the circular template and the inner wall of the narrow pipeline. The problem that when the pipe opening of the rainwater or sewage pipe is plugged through concrete pouring, formwork erecting in the pipe is difficult is solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a narrow pipeline plugging template structure and a pipeline rapid plugging method. Background Art

[0002] In municipal road projects and road renewal projects, there are some deep-buried rainwater or sewage pipes that need to be abandoned. The abandoned deep-buried rainwater or sewage pipes usually do not need to be completely crushed. It is only necessary to lay bricks under each inspection well to seal the pipe opening. However, the masonry sealing effect is extremely poor, and there are serious leakages. Therefore, the best method is to use impermeable concrete to cast and seal, but it is a small space operation, and it is difficult to support the formwork inside the circular (special-shaped) pipe, and the formwork is difficult to seal. Summary of the invention

[0003] In order to overcome the defects of the prior art, a narrow pipe plugging template structure and a pipe rapid plugging method are provided to solve the problem of difficulty in supporting the formwork inside the pipe when using concrete pouring to plug the pipe opening of the rainwater or sewage pipe.

[0004] In order to achieve the above-mentioned purpose, a narrow pipeline plugging template structure is provided, comprising:

[0005] Two circular templates are arranged opposite to each other, the outer diameter of the circular templates is smaller than the inner diameter of the narrow pipe, the outer edges of the two circular templates are connected with supporting ring plates, and an accommodating ring groove is formed between the circumferential surface of the supporting ring plate and the outer edges of the two circular templates;

[0006] An expansion airbag ring is accommodated in the accommodating ring groove;

[0007] A locking rod, a plurality of assembly holes are formed on the circumferential surface of the circular template, and the plurality of assembly holes are spaced apart along the circumferential direction of the circular template. The locking rod is elastically installed in the assembly hole, and a sealing pin is detachably installed at the orifice of the assembly hole. After the sealing pin is removed, the locking rod extends to the outside of the assembly hole and presses against the inner wall of the narrow pipe to lock the narrow pipe. After the locking rod locks the narrow pipe, the expansion airbag ring is inflated and pressed against the inner wall of the narrow pipe to seal the gap between the outer edge of the circular template and the inner wall of the narrow pipe.

[0008] Furthermore, the circular template is coaxially arranged with the supporting ring plate.

[0009] Furthermore, the supporting ring plate is provided with a first through hole, a circular template is provided with a second through hole, air pipes are passed through the first through hole and the second through hole, and the air pipes are connected to the expansion airbag ring.

[0010] Furthermore, a push spring is connected between the locking rod and the bottom of the assembly hole.

[0011] Furthermore, the locking rod and the push spring are coaxially arranged.

[0012] Furthermore, the circular template is provided with a through hole, the through hole is connected to the assembly hole, the sealing pin is passed through the through holes of the two circular templates, and the end plate of the locking rod is supported by the sealing pin.

[0013] Furthermore, an insertion hole is provided on the inner wall of the narrow pipe, and after the sealing pin is removed, the locking rod extends to the outside of the assembly hole and is inserted into the insertion hole.

[0014] The present invention provides a pipeline rapid plugging method using a narrow pipeline plugging template structure, comprising the following steps:

[0015] The two circular templates are coaxially arranged in the pipe opening of the narrow pipe, so that the notch of the accommodating annular groove is arranged toward the inner wall of the narrow pipe;

[0016] Removing the sealing pin at the opening of the assembly hole of the circular template so that the locking rod extends to the outside of the assembly hole and presses against the inner wall of the narrow pipe to lock the narrow pipe;

[0017] After the locking rod locks the narrow pipe, the expansion airbag ring is inflated and pressed against the inner wall of the narrow pipe to block the gap between the outer edge of the circular template and the inner wall of the narrow pipe, so that a casting space is formed between a circular template facing the pipe opening and the inner wall of the narrow pipe;

[0018] Using an outer formwork to seal the opening of the narrow pipe to seal the casting space;

[0019] Concrete is poured into the pouring space to block the pipe opening of the narrow pipe.

[0020] The beneficial effect of the present invention is that the template structure for plugging narrow pipes of the present invention adopts a prefabricated three-layer template, the middle supporting ring plate is relatively small, the diameter of the circular templates on both sides is relatively large, and the outer side thereof is left with space to form a ring groove with the two circular templates to install an inflatable rubber expansion bag ring. The template structure for plugging narrow pipes of the present invention can be quickly installed and fixed, and the expansion bag ring is used to increase the sealing and stability of the template, ensuring anti-seepage after pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 It is a structural schematic diagram of a narrow pipe plugging template structure according to an embodiment of the present invention.

[0023] Figure 2 It is a perspective view of a narrow pipe plugging template structure according to an embodiment of the present invention.

[0024] Figure 3 Schematic diagram of the structure of a locking rod according to an embodiment of the present invention.

[0025] Figure 4 1 is a top view of a locking rod according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] Reference Figures 1 to 4 As shown, the present invention provides a narrow pipe plugging template structure, including: a circular template 1, an expansion airbag ring 2 and a locking rod 3.

[0029] In this embodiment, there are two circular templates. The two circular templates 1 are arranged opposite to each other. The outer diameter of the circular template 1 is smaller than the inner diameter of the narrow pipe. Specifically, the outer diameter of the circular template is adapted to the inner diameter of the narrow pipe. The outer edges of the two circular templates 1 are connected with a supporting ring plate 11. An accommodating ring groove is formed between the circumferential surface of the supporting ring plate 11 and the outer edges of the two circular templates 1.

[0030] The expansion airbag ring 2 is accommodated in the accommodating ring groove.

[0031] A plurality of assembly holes are formed on the circumferential surface of the circular template 1. The plurality of assembly holes are arranged at intervals along the circumferential direction of the circular template 1. In this embodiment, the plurality of assembly holes are arranged at equal intervals along the circumferential direction of the circular template. Specifically, four assembly holes are arranged on each circular template.

[0032] The locking rod 3 is elastically mounted in the assembly hole. A sealing pin 31 is detachably mounted on the opening of the assembly hole.

[0033] After the sealing pin 31 is removed, the locking rod 3 extends to the outside of the assembly hole and presses against the inner wall of the narrow pipe to lock the narrow pipe. After the locking rod 3 locks the narrow pipe, the expansion airbag ring 2 is inflated and presses against the inner wall of the narrow pipe to block the gap between the outer edge of the circular template 1 and the inner wall of the narrow pipe.

[0034] As a preferred embodiment, the circular template 1 and the supporting ring plate 11 are coaxially arranged.

[0035] See also Figure 4 As shown, the supporting ring plate 11 is provided with a first through hole. A circular template 1 is provided with a second through hole. An air delivery pipe 33 is passed through the first through hole and the second through hole. The air delivery pipe 33 is connected to the expansion airbag ring 2.

[0036] Continue reading Figure 3 and Figure 4 As shown, a push spring 32 is connected between the lock rod 3 and the bottom of the assembly hole. The push spring is a spiral spring. The lock rod 3 and the push spring 32 are coaxially arranged.

[0037] The circular template 1 is provided with a through hole, which is connected to the assembly hole. The sealing pin 31 is inserted into the through holes of the two circular templates 1. The end plate of the locking rod 3 is supported on the sealing pin 31.

[0038] In some embodiments, the inner wall of the narrow pipe is provided with an insertion hole. After the sealing pin 31 is removed, the locking rod 3 extends to the outside of the assembly hole and is inserted into the insertion hole.

[0039] The present invention provides a pipeline rapid plugging method using a narrow pipeline plugging template structure, comprising the following steps:

[0040] S1. Coaxially arrange two circular templates 1 in the pipe opening of a narrow pipe so that the notch of the accommodating annular groove faces the inner wall of the narrow pipe.

[0041] S2. Remove the sealing pin 31 at the opening of the assembly hole of the circular template 1, so that the locking rod 3 extends to the outside of the assembly hole and presses against the inner wall of the narrow pipe to lock the narrow pipe.

[0042] S3. After the locking rod 3 locks the narrow pipe, the expansion bag ring 2 is inflated and pressed against the inner wall of the narrow pipe to block the gap between the outer edge of the circular template 1 and the inner wall of the narrow pipe, so that a casting space is formed between the circular template 1 facing the pipe opening and the inner wall of the narrow pipe.

[0043] S4. Use the outer formwork to seal the pipe opening of the narrow pipe to close the pouring space.

[0044] S5. Pour concrete into the pouring space to seal the opening of the narrow pipe.

[0045] The narrow pipe plugging template structure of the present invention adopts a prefabricated three-layer template, the middle supporting ring plate is relatively small, and the diameter of the circular templates on both sides is relatively large, and there is space on the outside to form a ring groove with the two circular templates to install an inflatable rubber expansion bag ring. The narrow pipe plugging template structure of the present invention can be quickly installed and fixed, and the expansion bag ring is used to increase the sealing and stability of the template to ensure anti-seepage after pouring.

[0046] After the ventilation test of the narrow space is qualified, the construction personnel transport the narrow pipe plugging template structure of the present invention into the narrow pipe and start the operation.

[0047] First clean the position of the narrow pipe that needs to be blocked, and pay attention to the position of the inflation port of the air pipe of the narrow pipe blocking template structure of the present invention. After the narrow pipe blocking template structure of the present invention is set in place, pull out the sealing pin, and the top spring extends the locking rod to fix it on the inner wall of the narrow pipe (the inner wall of the pipe is generally rough and can be fixed well. If the roughness is not enough, you can first grind out a little groove to form a slot). After the narrow pipe blocking template structure of the present invention is fixed in position, inflate the expansion airbag ring to seal the outer edge gap of the circular template.

[0048] The outer formwork needs to be cut with grouting ports of corresponding sizes on the upper part according to the needs of the site, so as to facilitate the internal grouting after the formwork is installed. According to the required pouring thickness, the outer formwork is installed outside the pipe mouth of the narrow pipe. The outer formwork can also adopt the narrow pipe plugging formwork structure of the present invention, and the installation method is the same. After the inner and outer formworks are installed, pouring can begin. The construction is completed by pouring the micro-expansion anti-seepage concrete (or micro-expansion anti-seepage mortar).

[0049] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A narrow pipe plugging template structure, characterized in that: include: Two circular templates are arranged opposite to each other, the outer diameter of the circular templates is smaller than the inner diameter of the narrow pipe, the outer edges of the two circular templates are connected with supporting ring plates, and an accommodating ring groove is formed between the circumferential surface of the supporting ring plate and the outer edges of the two circular templates; An expansion airbag ring is accommodated in the accommodating ring groove; A locking rod, a plurality of assembly holes are formed on the circumferential surface of the circular template, and the plurality of assembly holes are spaced apart along the circumferential direction of the circular template. The locking rod is elastically installed in the assembly hole, and a sealing pin is detachably installed at the orifice of the assembly hole. After the sealing pin is removed, the locking rod extends to the outside of the assembly hole and presses against the inner wall of the narrow pipe to lock the narrow pipe. After the locking rod locks the narrow pipe, the expansion airbag ring is inflated and pressed against the inner wall of the narrow pipe to seal the gap between the outer edge of the circular template and the inner wall of the narrow pipe.

2. The narrow pipe plugging template structure according to claim 1 is characterized in that: The circular template is coaxially arranged with the supporting ring plate.

3. The narrow pipe plugging template structure according to claim 1 is characterized in that: The supporting ring plate is provided with a first through hole, and a circular template is provided with a second through hole. Air pipes are passed through the first through hole and the second through hole, and the air pipes are connected to the expansion airbag ring.

4. The narrow pipe plugging template structure according to claim 1 is characterized in that: A push spring is connected between the locking rod and the bottom of the assembly hole.

5. The narrow pipe plugging template structure according to claim 4 is characterized in that: The locking rod is coaxially arranged with the pushing spring.

6. The narrow pipe plugging template structure according to claim 1 is characterized in that: The circular template is provided with a through hole, the through hole is communicated with the assembly hole, the sealing pin is passed through the through holes of the two circular templates, and the end plate of the locking rod is supported by the sealing pin.

7. The narrow pipe plugging template structure according to claim 1 is characterized in that: An inserting hole is provided on the inner wall of the narrow pipe. After the sealing pin is removed, the locking rod extends to the outside of the assembly hole and is inserted into the inserting hole.

8. A method for rapid pipe plugging using the narrow pipe plugging template structure according to any one of claims 1 to 7, characterized in that: The following steps are involved: The two circular templates are coaxially arranged in the pipe opening of the narrow pipe, so that the notch of the accommodating annular groove is arranged toward the inner wall of the narrow pipe; Removing the sealing pin at the opening of the assembly hole of the circular template so that the locking rod extends to the outside of the assembly hole and presses against the inner wall of the narrow pipe to lock the narrow pipe; After the locking rod locks the narrow pipe, the expansion airbag ring is inflated and pressed against the inner wall of the narrow pipe to block the gap between the outer edge of the circular template and the inner wall of the narrow pipe, so that a casting space is formed between a circular template facing the pipe opening and the inner wall of the narrow pipe; Using an outer formwork to seal the opening of the narrow pipe to seal the casting space; Concrete is poured into the pouring space to block the pipe opening of the narrow pipe.

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