CN211729673U - Hierarchical telescopic end cap for preventing cement slurry from flowing backwards - Google Patents

Abstract

The utility model relates to a prevent hierarchical telescopic end cap of grout refluence, include: the pipe piece embedded part is arranged on the pipe piece embedded part. The utility model has the advantages that: the utility model prevents the cement paste from entering the through hole of the embedded part during pouring and affecting the use effect of the embedded part; the utility model can protect the internal thread of the embedded part and improve the use performance; the utility model can reduce the cleaning of the holes of the embedded parts, reduce the production cost and improve the production efficiency; the utility model adopts a threaded connection structure, the construction is efficient, and the difficulty is low; the utility model adopts the telescopic plugging rod to reduce the occupied space during pouring; the utility model adopts double-layer protection measures, and the plastic plug cover has the function of protecting the through hole and the plug of the embedded part; the utility model discloses well plastics blanking cover can protect the end cap surface not to receive cement to pour the influence, performance when having guaranteed the end cap secondary and using.

Description

Hierarchical telescopic end cap for preventing cement slurry from flowing backwards

Technical Field

The utility model relates to a hierarchical telescopic end cap, in particular to prefabricated shield constructs section of jurisdiction and pours hierarchical telescopic end cap that the in-process prevents grout refluence.

Background

When the shield constructs the prefabricated section of jurisdiction construction, for the convenience of follow-up hoist and mount transfer and construction arrangement, often be provided with the built-in fitting in the section of jurisdiction and be used for connecting external instrument. In the existing construction process, impurities such as cement paste can enter holes of the embedded part when the duct piece is poured, so that the embedded part is partially blocked by the cement paste, and the using effect of the embedded part is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the aforesaid not enough, provide a prefabricated shield constructs section of jurisdiction and pours hierarchical telescopic end cap that prevents the grout refluence of in-process.

The graded telescopic plug for preventing cement slurry from flowing backwards comprises a plug, a segment embedded part, an external steel pipe and a plastic plug cover; be equipped with the cylinder cavity in the end cap and cooperate and be equipped with the end cap pole, the symmetry is equipped with the buckle of a pair of spacing end cap pole rotation angle in the cylinder cavity, cylinder cavity bottom is equipped with the draw-in groove that can imbed the end cap pole, the end cap surface is equipped with the end cap external screw thread that matches with the built-in fitting internal thread of section of jurisdiction built-in fitting, be equipped with on the section of jurisdiction built-in fitting with end cap assorted through-hole, end cap and section of jurisdiction built-in fitting pass through the screw thread and closely combine, when plastics blanking cover lid is on the through-hole of section of jurisdiction built-in fitting, the end.

Preferably, the method comprises the following steps: the segment embedded part is arranged in a concrete shield segment.

Preferably, the method comprises the following steps: the plugging rod is a square head rod and is provided with an external steel pipe which is matched and connected.

Preferably, the method comprises the following steps: the surface of the plastic plug cover is provided with a breaking indication line.

The utility model has the advantages that:

1. the utility model discloses in grout gets into the built-in fitting through-hole when preventing to pour, influence the built-in fitting result of use.

2. The utility model discloses can protect the built-in fitting internal thread, improve performance.

3. The utility model discloses can reduce the built-in fitting hole clearance, reduction in production cost improves production efficiency.

4. The utility model discloses a threaded connection structure, the construction is high-efficient, and the degree of difficulty is low.

5. The utility model discloses a telescopic choke plug pole can reduce the space that occupies when pouring.

6. The utility model discloses a double-deck safeguard measure, plastics blanking cover have the function of protection built-in fitting through-hole and end cap concurrently.

7. The utility model discloses well plastics blanking cover can protect the end cap surface not to receive cement to pour the influence, performance when having guaranteed the end cap secondary and using.

Drawings

FIG. 1 is an isometric view of a plug device;

FIG. 2 is a side view of the plug device;

FIG. 3 is a cross-sectional view of the plug device;

FIG. 4 is a bottom view of the plug device;

FIG. 5 is a schematic view of a segment embedment;

FIG. 6 is an isometric view of the plastic blanking cover;

FIG. 7 is a top view of the plastic closure;

FIG. 8 is a schematic diagram of an installation position of an embedded part on a shield segment;

FIG. 9 is a schematic view of an installation process;

fig. 10 is a view of the finished product.

Description of reference numerals: 1-a plug rod, 2-a plug, 3-a segment embedded part, 4-an external steel pipe, 5-an embedded part internal thread, 6-a plug external thread, 7-a plastic plug cover, 8-a buckle, 9-a clamping groove, 10-a concrete shield segment and 11-a removal indication line.

Detailed Description

The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

The embodiment designs a plug for preventing cement slurry from flowing backwards in the pouring process of the prefabricated shield segment aiming at the current construction defects so as to protect the integrity and functionality of the hole of the embedded part. And the prefabricated plug can be repeatedly used, so that the utilization efficiency of resources is improved.

As shown in fig. 1, the graded telescopic plug for preventing cement slurry from flowing backwards in the pouring process of the prefabricated shield segment of the embodiment comprises a plug 2, a segment embedded part 3, an external steel pipe 4 and a plastic plug 7. A cylindrical cavity used for controlling the entering depth of the plug and blocking cement slurry from entering is arranged in the plug 2, and the plug rod 1 and the external square steel pipe 4 are used for installing and disassembling the plug 2.

As shown in fig. 2, the outer surface of the plug 2 is provided with a plug external thread 6 matched with the embedded part internal thread 5 of the segment embedded part 3, and is connected with the segment embedded part 3 through the plug external thread 6. The maximum outer diameter of the plug 2 is 60mm, the length is 35mm,

as shown in fig. 4, a pair of buckles 8 for limiting the rotation angle of the plug rod 1 is symmetrically arranged in the cylindrical cavity of the plug 2, a clamping groove 9 capable of being embedded into the plug rod 1 is arranged at the bottom of the cylindrical cavity, and the plug rod 1 can be lifted up and down and fixed with the buckles 8 after being rotated. The plugging rod 1 rotates clockwise by 90 degrees until the position of the buckle 8 is fixed.

As shown in fig. 7, the plastic closure 7 has a break-away line 11.

As shown in fig. 9, the choke plug rod 1 is 40mm long and is connected with the circumscribed steel pipe 4 through threads.

As shown in fig. 10, after the plug 2 is installed, the plug rod 1 descends to the clamping groove 9 and is covered by the plastic plug cover 5.

The use method of the grading telescopic plug for preventing cement slurry from flowing backwards in the pouring process of the prefabricated shield segment comprises the following steps:

1) prefabricating plugs and segment embedded parts 3 in a factory;

2) placing the segment embedded part 3 in the process of prefabricating the concrete shield segment 10;

3) the plug rod 1 is fixed on the buckle 8, and the plug is screwed into the segment embedded part 3 through the external steel pipe 4 to ensure tight connection;

4) in the duct piece pouring process, the plug rod 1 is placed from the buckle 8 to the clamping groove 9, then the plastic plug cover 7 is installed completely, the plug 2 and the duct piece embedded part 3 are guaranteed to be connected, and other impurities such as concrete grout are prevented from entering the duct piece embedded part 3 and the plug 2 to influence the respective use functions of the two parts;

5) after the construction of the duct piece is finished, the plastic plug cover 7 is broken along a breaking indication line 11, then the plug rod 1 is lifted to the buckle 8, and the plug 2 is screwed out through the external steel pipe 4;

6) cleaning sundries around the pipe sheet embedded part 3;

7) and hoisting and maintaining the finished concrete shield segment 10.

The plug 2 matched with the segment embedded part 3 can effectively prevent the holes of the segment embedded part 3 from being blocked by cement slurry. This end cap 2 adopts the metal end cap, can reuse, has slowed down the influence that external environment is ageing to the end cap, and the efficiency of construction is high. And the outer surface of the plug 2 is connected with the through hole of the segment embedded part 3 through mutually matched threads, so that better sealing performance is realized, and the expected effect is achieved.

Claims (5)

1. The utility model provides a prevent hierarchical telescopic end cap of grout refluence which characterized in that: comprises a plug (2), a segment embedded part (3), an external steel pipe (4) and a plastic plug cover (7); be equipped with the cylinder cavity in end cap (2) and cooperate and be equipped with end cap pole (1), the symmetry is equipped with buckle (8) of a pair of spacing end cap pole (1) rotation angle in the cylinder cavity, cylinder cavity bottom is equipped with draw-in groove (9) that can imbed end cap pole (1), end cap (2) surface is equipped with end cap external screw thread (6) that matches with built-in fitting internal thread (5) of section of jurisdiction built-in fitting (3), be equipped with on section of jurisdiction built-in fitting (3) with end cap (2) assorted through-hole, end cap (2) and section of jurisdiction built-in fitting (3) closely combine through the screw thread, when plastics blanking cover (7) lid is on the through-hole of section of jurisdiction built-in fitting (3), end cap pole (1) of end cap (2) stretch into embedding draw-in groove (9), end cap (2).

2. The graded telescopic plug for preventing cement slurry from flowing backwards as claimed in claim 1, wherein: the segment embedded part (3) is arranged in the concrete shield segment (10).

3. The graded telescopic plug for preventing cement slurry from flowing backwards as claimed in claim 1, wherein: the plugging rod (1) is a square head rod and is provided with an external steel pipe (4) which is connected in a matching way.

4. The graded telescopic plug for preventing cement slurry from flowing backwards as claimed in claim 1, wherein: the surface of the plastic plug cover (7) is provided with a breaking indication line (11).

5. The graded telescopic plug for preventing cement slurry from flowing backwards as claimed in claim 1, wherein: the plug (2) is a metal plug.

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