CN203784513U - Connection device of grouting pipe and sleeve - Google Patents

Abstract

The utility model provides a connection device between a grouting pipe and a casing, which includes a hoop, a rubber stopper and a flange, the hoop is set on the casing, and the flange is set On the grouting pipe, the rubber plug is axially provided with a through hole, which is sleeved on the grouting pipe through the through hole, and the rear end of the rubber plug is in contact with the flange. Adjacent, the front end of which is inserted into the casing and seals the port of the casing, and the ferrule and the flange are connected by a pull bolt. The connection device between the grouting pipe and the casing of the utility model can not only realize the sealed connection between the casing and the grouting pipe by setting the ferrule, the rubber plug and the flange, but also facilitate assembly and disassembly, which overcomes the existing technical deficiencies.

Description

A connection device for grouting pipe and casing

technical field

The utility model belongs to the field of tunnel construction, and in particular relates to a connection device between a grouting pipe and a sleeve pipe.

Background technique

Conduit grouting is a very commonly used support method in tunnel construction. It is a technological method in the process of tunnel engineering excavation. It is mainly used for weak broken zones with short self-stabilization time, shallow buried sections, tunnel opening bias sections, Pre-support for sand section, sand pebble section, fault fracture zone, karst and other sections. The reinforcement mechanism of conduit grouting is that the grout flows, spreads, fills, and consolidates in the rock cracks and soil voids, forming concretions with a certain strength and low water permeability, filling rock cracks, cutting off water flow channels, and consolidating broken rocks and The surrounding soil forms a hard arch. The grouting pipe generally adopts a steel pipe with a diameter of 30-50mm, which is used for pouring the grouting liquid. The grouting liquid generally adopts cement slurry, cement mortar or cement and water glass double liquid slurry.

As shown in Figure 1, it is a schematic diagram of the connection between the existing casing 11 and the grouting pipe 12, which is to insert the casing 11 in the wall 10 in advance, and set a fixed baffle at one end of the grouting pipe 12 13. Then cover the baffle 13 at the port of the casing 11, and weld it to the casing 11, and then connect the other end of the grouting pipe 12 to the grouting pipeline 15 by closing the valve 14, and the grouting can be performed. pulp work. However, due to the use of welding, the connection structure requires spot welding, which increases the difficulty of construction. During construction, two workers are required to operate at the same time, which not only wastes manpower, material resources, welding materials and electricity, but also takes a long time to construct, and slows down construction progress; due to the need for power welding, a major source of danger in construction is increased; after the grouting operation is completed, in order to reuse the grouting pipe, it is necessary to cut the casing and the grouting pipe to remove the baffle, which virtually increases the artificial.

In view of this, the designer has developed a connection device for grouting pipes and casings based on years of experience in production design in this field and related fields, in order to solve the problems existing in the prior art.

Utility model content

The purpose of this utility model is to provide a connection device between the grouting pipe and the casing. By setting ferrules, rubber plugs, flanges and other components, not only the sealing connection between the casing and the grouting pipe can be realized, but also the assembly and disassembly It is convenient and overcomes the defects of the prior art.

For this reason, the utility model proposes a connection device between a grouting pipe and a casing, which includes a ferrule, a rubber stopper and a flange, and the ferrule is set on the casing. The blue sleeve is set on the grouting pipe, and the rubber plug is provided with a through hole in the axial direction, which is sleeved on the grouting pipe through the through hole, and the rear end of the rubber plug is connected to the The flanges are adjacent to each other, and their front ends are inserted into the casing to seal the ports of the casing, and the ferrule and the flange are connected by a pull bolt.

The connection device between the grouting pipe and the casing as described above, wherein the rubber stopper is in the shape of a truncated cone, and the diameter of its rear end is larger than the diameter of its front end.

The connection device between the grouting pipe and the casing provided by the utility model can realize the sealed connection between the casing and the grouting pipe by setting the ferrule, the rubber plug and the flange, without welding, which not only saves materials, but also reduces the consumption of welding materials , and because there is no need for electricity, it also reduces the source of danger; when working, only one person can quickly operate, reducing labor, improving work efficiency, and speeding up the construction progress; assembly and disassembly are convenient, and the ferrule is connected by the pull bolt And the flange, the operation time is much shorter than welding, and there is no need to cut the casing and grouting pipe during disassembly, no damage to the casing and grouting pipe, and can be recycled.

Description of drawings

The following drawings are only intended to illustrate and explain the utility model schematically, and do not limit the scope of the utility model. in:

Fig. 1 is the connection schematic diagram of existing grouting pipe and casing;

Fig. 2 is a structural schematic diagram of the connection device between the grouting pipe and the casing of the present invention.

Explanation of main component labels:

21 ferrule 22 rubber stopper

221 through hole 23 flange

24 pull bolts

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation of the present utility model is now described with reference to the accompanying drawings, wherein the same components use the same reference numerals.

As shown in Figure 2, the connection device between the grouting pipe and the casing proposed by the utility model includes a ferrule 21, a rubber stopper 22 and a flange 23, and the ferrule 21 is sleeved with a solid on the ferrule. On the pipe 11, the flange 23 is sleeved on the grouting pipe 12, and the rubber plug 22 is provided with a through hole 221 along the axial direction, which is sleeved on the grouting pipe 12 through the through hole 221. , and the rear end of the rubber stopper 22 is adjacent to the flange 23, and its front end is inserted into the sleeve 11 to seal the port of the sleeve 11, thereby satisfying the requirement of grouting The communication between the pipe 12 and the casing 11 realizes the sealing of the port of the casing 11 to meet the requirements of use. In addition, the ferrule 21 and the flange 23 are connected by a pull bolt 24 . Wherein, the specific dimensions of the ferrule 21, the rubber plug 22 and the flange 23 are not specifically limited here, and may be determined according to actual needs in actual application, for example, according to the dimensions of casing pipes and grouting pipes.

Wherein, in order to provide a sealing effect, preferably, the rubber stopper 22 is in the shape of a truncated cone, and the diameter of its rear end is larger than the diameter of its front end. Therefore, by using the above-mentioned structural characteristics of the rubber stopper, the outer surface of the rubber stopper can be more fully contacted with the peripheral side of the port of the sleeve, and the sealing performance is improved.

The connection device between the grouting pipe and the casing proposed by the utility model, in the specific work, it is to set the ferrule 21 on the casing 11 first, and tighten it by screws. At the same time, the flange 23 and the rubber stopper 22 is set on one end of the grouting pipe 12, and then the rubber stopper 22 is inserted into the casing 11, so that the rubber stopper 22 and the casing 11 are tightly combined; the ferrule 21 and the flange 23 are connected by the pull bolt 24 to complete The casing pipe 11 and the grouting pipe 12 are fixedly connected, after that, the grouting pipe 12 is connected with the grouting pipeline 15 through the shut-off valve 14, and the grouting operation can be carried out;

After the grouting is completed, the ferrule 21 and the flange 23 are removed, and the grouting pipe 12 is pulled out from the casing 11, so that the grouting pipe can be recycled.

The above descriptions are only illustrative specific implementations of the present utility model, and are not intended to limit the scope of the present utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present utility model shall fall within the protection scope of the present utility model.

Claims (2)

1. the connection set of a slurry injection pipe and sleeve pipe, it is characterized in that, the connection set of described slurry injection pipe and sleeve pipe includes a cuff, a rubber stopper and a flange, the sheathed solid of described cuff is on described sleeve pipe, described flange is set in described slurry injection pipe, described rubber stopper is provided with a through hole vertically, it is set in described slurry injection pipe by described through hole, and the rear end of described rubber stopper is adjacent with described flange, its front end is inserted in described sleeve pipe, and seal the port of described sleeve pipe, between described cuff and flange, be connected by split bolt.

2. the connection set of slurry injection pipe as claimed in claim 1 and sleeve pipe, is characterized in that, described rubber stopper is frustoconic shape, and the diameter of its rear end is greater than the diameter of its front end.