CN218991631U - Starting well opening water stopping device for pipe jacking construction - Google Patents

Abstract

The utility model relates to the technical field of pipe jacking construction and discloses an originating well opening water stop device for pipe jacking construction. According to the utility model, the leakage of groundwater from between the originating well and the outer steel sleeve can be prevented through the rubber anti-seepage disc and the expansion ring; the first water-stop rubber plug and the second water-stop rubber plug can form a closed structure between the outer wall of the pipe joint and the inner sleeve assembly, so that the ground water is effectively prevented from flowing into the originating well from a gap between the pipe joint and the inner sleeve assembly to cause a safety accident; the annular air bag expands from the inner side of the fixing frame, so that a closed state is formed between the pipe joint and the fixing frame, excessive water flow can be effectively prevented from rushing out, and the safety of pipe jacking construction is improved.

Description

A water stop device for the opening of the originating shaft for pipe jacking construction

technical field

The utility model relates to the technical field of pipe jacking construction, in particular to a water stop device for the opening of an originating well for pipe jacking construction.

Background technique

In the pipe jacking project, in order to make the pipe energy-saving and smoothly go out from the originating shaft, the hole reserved in the working well is generally slightly larger than the outer diameter of the pipe joint. Effective measures must be taken to seal the gap during jacking, otherwise the groundwater and mud will be damaged. It will flow into the working well from the gap, which will affect the operation of the working well in the slightest, and cause the surface of the upper part of the hole to subside, or even cause accidents, endangering the safety of surrounding buildings and underground pipelines.

The Chinese patent discloses a water-stop structure for the opening of the pipe jacking origin shaft (authorized announcement number CN205778938U). This patented technology can effectively prevent groundwater and sediment from pouring into the origin shaft, and ensure the stability of the soil in the pipe jacking direction. It does not collapse to ensure construction safety; it can be constructed on multiple working faces at the same time according to needs, and the construction speed is fast; the size can be adjusted according to the diameter of the jacking pipe, which is flexible and reliable; the process is simple, easy to process and manufacture, and the construction cost is low, but when water flows through When it is large, it cannot effectively prevent water from gushing out of the gap and entering to cause a safety accident.

Utility model content

The purpose of the utility model is to provide a water stop device for the opening of the originating shaft for pipe jacking construction, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A water-stopping device for the opening of a launching shaft for pipe jacking construction, comprising an outer steel sleeve and sealing discs fixed on the left and right ends of the outer steel sleeve, an inner sleeve assembly is installed inside the outer steel sleeve, and the outer steel sleeve is equipped with an inner sleeve assembly. The left and right ends of the outer side of the steel sleeve are fixedly connected with flanges, a rubber anti-seepage disc is arranged between the flange and the sealing disc, and an expansion ring is fixedly connected to the outer side of the rubber anti-seepage disc; The inner sleeve assembly includes an inner steel sleeve and positioning plates located on the left and right sides of the inner steel sleeve. The left and right ends of the outer side of the inner steel sleeve are fixedly connected with support plates, and the support plate and the positioning plate are installed There is a fixed frame, the inner side of the fixed frame is installed with an annular air bag, and the left and right sides of the fixed frame are respectively provided with a second water-stop rubber plug and a first water-stop rubber plug.

As a further solution of the utility model: the sealing disc, the rubber anti-seepage disc and the flange are fixedly connected by bolts, one end of the sealing disc is fixedly connected with an inner bayonet, and the inner bayonet is embedded on the inside of the outer steel sleeve.

As a further solution of the utility model: one end of the positioning disc is fixedly connected with an outer bayonet, and the inner side of the positioning disc is provided with a trachea hole near the outer side of the outer bayonet, and one side of the annular airbag is fixedly connected with a trachea. The trachea runs through the inside of the trachea hole.

As a further solution of the utility model: the outer bayonet is embedded inside the corresponding inner bayonet, one end of the second water-stop rubber plug is embedded inside the outer bayonet, the first water-stop rubber plug is One end is embedded inside the inner steel sleeve.

As a further solution of the utility model: the fixing frame includes a first fixing piece and a second fixing piece located on one side of the first fixing piece, and the outer sides of the first fixing piece and the second fixing piece are jointly fixedly connected with several A U-shaped connecting block, the left and right sides of the U-shaped connecting block are provided with screw holes.

As a further solution of the present invention: a cavity is provided between the first fixing piece, the second fixing piece and the U-shaped connecting block, and the annular airbag is located in the cavity.

As a further solution of the utility model: one end of the U-shaped connecting block is fixedly connected to the corresponding positioning plate through bolts, and the other end of the U-shaped connecting block is fixedly connected to the corresponding supporting plate through bolts, and the second stop The water rubber stopper is fixed between the second fixed piece and the corresponding positioning plate, and the first water-stop rubber stopper is fixed between the first fixed piece and the corresponding support plate.

Compared with the prior art, the utility model has the beneficial effects:

The utility model can prevent groundwater from leaking between the originating shaft and the outer steel sleeve through the rubber anti-seepage plate and the expansion ring; through the first water-stop rubber plug and the second water-stop rubber plug, the outer wall and the inner An airtight structure is formed between the sleeve components, which effectively prevents groundwater from flowing into the launch shaft from the gap between the pipe joint and the inner sleeve components, causing safety accidents; the annular air bag expands from the inner side of the fixing frame, making the pipe An airtight state is formed between the joint and the fixed frame, which can effectively prevent excessive water flow from gushing out and improve the safety of pipe jacking construction.

Description of drawings

Fig. 1 is a structural schematic diagram of a water stop device for an originating shaft hole for pipe jacking construction;

Fig. 2 is a schematic diagram of an exploded structure of a water stop device at the mouth of an originating shaft for pipe jacking construction;

Fig. 3 is a structural schematic diagram of the inner sleeve assembly in the water stop device for the opening of the origin shaft for pipe jacking construction;

Fig. 4 is a schematic structural view of the fixed frame in the water stop device for the opening of the origin shaft for pipe jacking construction;

Fig. 5 is a working schematic diagram of a water stop device for the opening of the originating shaft for pipe jacking construction.

In the figure: 1. Outer steel sleeve; 11. Flange; 2. Inner sleeve assembly; 21. Inner steel sleeve; 211. Support plate; 22. First water-stop rubber plug; 23. Annular airbag; 231 , air pipe; 24, second water-stop rubber plug; 25, positioning plate; 251, outer bayonet; 252, air pipe hole; 26, fixed frame; 261, first fixed piece; 262, second fixed piece; 263, screw Hole; 264, U-shaped connecting block; 3, rubber anti-seepage plate; 31, expansion ring; 4, sealing plate; 41, inner bayonet;

Detailed ways

Please refer to Figures 1 to 5. In an embodiment of the present utility model, a water stop device for the opening of the originating shaft for pipe jacking construction includes an outer steel sleeve 1 and sealing discs 4 fixed on the left and right ends of the outer steel sleeve 1. The inner sleeve assembly 2 is installed inside the steel sleeve 1, and the left and right ends of the outer steel sleeve 1 are fixedly connected with flanges 11, and a rubber anti-seepage plate is arranged between the flange 11 and the sealing plate 4 3. When making the originating shaft 5, reserve a hole at the position of the pipe jacking, install the device in the hole, and two of the sealing discs 4 are respectively attached to both sides of the inner and outer walls of the originating shaft 5, and the rubber anti-corrosion The outer side of the seepage plate 3 is fixedly connected with an expansion ring 31, and the expansion ring 31 can prevent groundwater from leaking between the originating well 5 and the outer steel sleeve 1; the inner sleeve assembly 2 includes an inner steel sleeve 21 and a The positioning discs 25 on the left and right sides of the sleeve 21, the left and right ends of the outer side of the inner steel sleeve 21 are fixedly connected with a support disc 211, a fixed frame 26 is installed between the support disc 211 and the positioning disc 25, and the inner side of the fixed frame 26 is installed There is an annular air bag 23, and the left and right sides of the fixing frame 26 are respectively provided with a second water-stop rubber plug 24 and a first water-stop rubber plug 22. During the pipe jacking process, the pipe joint 6 enters the inner sleeve from one end of the sealing plate 4 In the cylinder assembly 2, the pipe joint 6 squeezes the first water-stop rubber plug 22 and the second water-stop rubber plug 24, and the first water-stop rubber plug 22 and the second water-stop rubber plug 24 are deformed, so that the outer wall of the pipe joint 6 There is an airtight structure between the first water-stop rubber plug 22 and the second water-stop rubber plug 24, which can effectively prevent groundwater from flowing into the originating shaft 5 from the gap between the pipe joint 6 and the inner sleeve assembly 2, cause safety accidents.

In Fig. 1 and Fig. 2, the sealing disc 4, the rubber anti-seepage disc 3 and the flange 11 are fixedly connected by bolts, one end of the sealing disc 4 is fixedly connected with an inner bayonet 41, and the inner bayonet 41 is embedded in the outer On the inside of the steel sleeve 1, the inner sleeve assembly 2 is fixed inside the outer steel sleeve 1 through the left and right inner bayonets 41 without sliding.

In Fig. 3 and Fig. 5, one end of the positioning plate 25 is fixedly connected with an outer bayonet 251, and the inner side of the positioning plate 25 close to the outside of the outer bayonet 251 is provided with a trachea hole 252, and one side of the annular airbag 23 is fixedly connected with a trachea 231 , the air pipe 231 runs through the inner side of the air pipe hole 252, so that the air pipe 231 can be easily connected with an external air pump, the outer bayonet 251 is embedded in the inner side of the corresponding inner bayonet 41, and one end of the second water-stop rubber plug 24 is embedded in the outer bayonet On the inside of the port 251, one end of the first water-stop rubber plug 22 is embedded in the inside of the inner steel sleeve 21, thereby fixing the first water-stop rubber plug 22 and the second water-stop rubber plug 24 on both sides of the fixing frame 26, When the pipe section 6 passes through the fixing frame 26 , the outer wall of the pipe section 6 can be in close contact with the first water-stop rubber plug 22 and the second water-stop rubber plug 24 .

In Fig. 3 and Fig. 4, the fixing bracket 26 includes a first fixing piece 261 and a second fixing piece 262 located on one side of the first fixing piece 261, and the outer sides of the first fixing piece 261 and the second fixing piece 262 are jointly fixedly connected with Several U-shaped connecting blocks 264, the left and right sides of the U-shaped connecting block 264 are provided with screw holes 263, one end of the U-shaped connecting block 264 is fixedly connected with the corresponding positioning plate 25 by bolts, and the other end of the U-shaped connecting block 264 The bolts are fixedly connected with the corresponding support plate 211, the second water-stop rubber plug 24 is fixed between the second fixed piece 262 and the corresponding positioning plate 25, the first water-stop rubber plug 22 is fixed between the first fixed piece 261 and the corresponding Between the supporting discs 211.

In Fig. 4 and Fig. 5, a cavity is provided between the first fixed piece 261, the second fixed piece 262 and the U-shaped connecting block 264, and the annular air bag 23 is located in the cavity. During the pipe jacking process, when the groundwater pressure If it is too large, water will rush out from between the outer wall of the pipe joint 6 and the first water-stop rubber plug 22 and the second water-stop rubber plug 24, connect the air pipe 231 with an external air pump, and inflate the annular air bag 23 through the air pump. After the annular air bag 23 is inflated, it expands from the inside of the fixed frame 26, and is blocked between the pipe joint 6 and the fixed frame 26 to form an airtight state, which can effectively prevent water from gushing out.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Any equivalent replacement or change of the technical solution of the utility model and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (7)

1. The utility model provides a pipe jacking construction is with opening water stop device that originates from, includes outer steel sleeve (1) and fixes sealing disc (4) at the left and right sides of outer steel sleeve (1), its characterized in that, the internally mounted of outer steel sleeve (1) has inner sleeve assembly (2), the both ends all fixedly connected with ring flange (11) about the outside of outer steel sleeve (1), be provided with rubber impervious disc (3) between ring flange (11) and sealing disc (4), the outside fixedly connected with expansion ring (31) of rubber impervious disc (3); the inner sleeve assembly (2) comprises an inner steel sleeve (21) and positioning plates (25) positioned on the left side and the right side of the inner steel sleeve (21), support plates (211) are fixedly connected to the left end and the right end of the outer side of the inner steel sleeve (21), a fixing frame (26) is installed between the support plates (211) and the positioning plates (25), an annular air bag (23) is installed on the inner side of the fixing frame (26), and a second water stop rubber plug (24) and a first water stop rubber plug (22) are respectively arranged on the left side and the right side of the fixing frame (26).

2. The starting well opening water stop device for pipe jacking construction according to claim 1, wherein the sealing disc (4), the rubber anti-seepage disc (3) and the flange disc (11) are fixedly connected through bolts, one end of the sealing disc (4) is fixedly connected with an inner clamping opening (41), and the inner clamping opening (41) is embedded into the inner side of the outer steel sleeve (1).

3. The originating well opening water stop device for pipe jacking construction according to claim 1, wherein one end of the positioning disc (25) is fixedly connected with an outer clamping opening (251), an air pipe hole (252) is formed in the inner side of the positioning disc (25) close to the outer side of the outer clamping opening (251), an air pipe (231) is fixedly connected to one side of the annular air bag (23), and the air pipe (231) penetrates through the inner side of the air pipe hole (252).

4. A pipe-jacking construction initiation well opening water stop device according to claim 3, wherein the outer clamping opening (251) is embedded inside the corresponding inner clamping opening (41), one end of the second water stop rubber plug (24) is embedded inside the outer clamping opening (251), and one end of the first water stop rubber plug (22) is embedded inside the inner steel sleeve (21).

5. The originating well opening water stop device for pipe jacking construction according to claim 1, wherein the fixing frame (26) comprises a first fixing piece (261) and a second fixing piece (262) located at one side of the first fixing piece (261), a plurality of U-shaped connecting blocks (264) are fixedly connected to the outer sides of the first fixing piece (261) and the second fixing piece (262) together, and screw holes (263) are formed in the left side and the right side of each U-shaped connecting block (264).

6. The water stop device for the starting well opening for pipe jacking construction according to claim 5, wherein a cavity is arranged among the first fixing piece (261), the second fixing piece (262) and the U-shaped connecting block (264), and the annular air bag (23) is positioned in the cavity.

7. The starting well opening water stop device for pipe jacking construction according to claim 5, wherein one end of the U-shaped connecting block (264) is fixedly connected with the corresponding positioning disc (25) through a bolt, the other end of the U-shaped connecting block (264) is fixedly connected with the corresponding supporting disc (211) through a bolt, the second water stop rubber plug (24) is fixed between the second fixing sheet (262) and the corresponding positioning disc (25), and the first water stop rubber plug (22) is fixed between the first fixing sheet (261) and the corresponding supporting disc (211).

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