Portal sealing flange for pipe jacking construction

Abstract

The utility model provides a portal sealing flange for pipe jacking construction, belongs to the technical field of pipe jacking construction, and solves the problem that water and soil flow out when a conventional pipe jacking machine enters and exits a portal in the construction process. The portal sealing flange comprises a first flange plate and a second flange plate, and the first flange plate and the second flange plate are fixedly connected through a plurality of flange bolts. Flange convex edges are arranged on the first edges of the first flange plate and the second flange plate; when the first flange plate and the second flange plate are fixedly connected, the joint and the flange convex edge form a groove; and the steel pressing plate is arranged in the groove. The cutter head of the pipe jacking machine improves the sealing effect when the pipe jacking machine enters and exits a tunnel portal in the construction process, and avoids the problem that water and soil flow out.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking construction, in particular to a tunnel door sealing flange used for pipe jacking construction. Background Art

[0002] Pipe jacking construction is a trenchless construction method that is widely used in the laying and maintenance of underground pipelines for urban water supply and drainage, electricity, communications, etc. This method avoids the damage to the ground caused by traditional excavation construction by jacking the pipe between the working well and the receiving well. It has the advantages of fast construction speed and small environmental impact. However, in the process of the pipe jacking machine entering and exiting the tunnel portal, the problem of poor sealing of the tunnel portal has always been a problem that has plagued the construction team. In the existing pipe jacking construction technology, the tunnel portal sealing mainly adopts traditional water-stopping materials and methods, such as rubber water-stopping plates, cement sealing, etc. However, in the actual construction process, there are still problems such as unstable sealing effect and high construction difficulty. Summary of the Invention

[0003] The utility model provides a tunnel door sealing flange for pipe jacking construction, which solves the problem of water and soil flowing out when the existing pipe jacking machine enters and exits the tunnel door during the construction process.

[0004] In order to solve the above technical problems, the technical solutions of the present utility model are as follows:

[0005] A tunnel door sealing flange for pipe jacking construction, comprising:

[0006] a first flange and a second flange, wherein the first flange and the second flange are fixedly connected by a plurality of flange bolts;

[0007] The first edges of the first flange and the second flange are provided with flange ridges, and when the first flange and the second flange are fixedly connected, a groove is formed at the connection point and the flange ridges;

[0008] A steel pressing plate is arranged in the groove.

[0009] Optionally, the first flange and the second flange have the same appearance.

[0010] Optionally, a plurality of flange bolt holes are evenly distributed along the axis on the first surface of the first flange and the second flange, and the plurality of flange bolts pass through the plurality of flange bolt holes to fix the first flange and the second flange together.

[0011] Optionally, the steel pressing plate includes:

[0012] a first pressing plate and a second pressing plate;

[0013] The ends of the first pressing plate and the second pressing plate are provided with pressing plate strips, and a pressing plate strip bolt hole is provided at the center position of the pressing plate strip. The first pressing plate and the second pressing plate are fixedly connected by a steel pressing plate bolt passing through the pressing plate strip bolt hole.

[0014] Optionally, the first pressing plate and the second pressing plate have the same outer shape, both being semi-circular rings.

[0015] Optionally, a washer is provided between the first flange and the second flange, and the first surface of the washer has the same outer shape as the first surface of the first flange.

[0016] Optionally, the washer is provided with a plurality of washer holes, and a plurality of flange bolts pass through the plurality of flange bolt holes and the plurality of washer holes to fixedly connect the first flange and the second flange.

[0017] Optionally, the first flange, the second flange and the steel pressing plate are made of metal materials, and the washer is made of rubber materials. Description of the Drawings

[0018] Figure 1 is an exploded schematic view of the portal sealing flange according to an embodiment of the present invention;

[0019] Figure 2 is a three-dimensional schematic view of the portal sealing flange according to an embodiment of the present invention;

[0020] Figure 3 is a structural schematic view of the first flange of the portal sealing flange according to an embodiment of the present invention;

[0021] Figure 4 is a structural schematic view of the washer of the portal sealing flange according to an embodiment of the present invention;

[0022] Figure 5 is a connection schematic view of the first flange and the second flange of the portal sealing flange according to an embodiment of the present invention;

[0023] Wherein, 1, the first flange; 11, the flange convex edge; 12, the flange bolt hole; 2, the second flange; 3, the steel pressing plate; 31, the first pressing plate; 32, the second pressing plate; 33, the pressing plate strip; 4, the flange bolt; 5, the steel pressing plate bolt; 6, the channel; 7, the washer; 71, the washer hole. Detailed Embodiments

[0024] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be completely conveyed to those skilled in the art.

[0025] As Figure 1 and Figure 2 shown, the portal seal flange for pipe jacking construction proposed in the embodiment of the present utility model includes:

[0026] A first flange 1 and a second flange 2, wherein the first flange 1 and the second flange 2 are fixedly connected by a plurality of flange bolts 4; a flange convex edge 11 is provided at the first edge of the first flange 1 and the second flange 2; when the first flange 1 and the second flange 2 are fixedly connected, a groove 8 is formed at the connection and the flange convex edge 11; a steel pressing plate 3 is provided in the groove 8.

[0027] In this embodiment, the portal seal flange for pipe jacking construction is specially designed for pipe jacking construction to ensure the sealing and stability at the portal. It mainly consists of the following key parts: The first flange 1 is usually made of high-strength material, preferably iron, and its surface is coated with anti-rust paint to ensure its performance and durability in a harsh construction environment; the shape and size of the first flange 1 are usually customized according to specific construction requirements and pipe specifications; the second flange 2 is similar to the first flange 1 and is also made of high-strength material. As a preferred solution, the second flange 2 can have the same outer shape as the first flange 1; it is connected to the first flange 1 by flange bolts 4 to form a tight and stable sealing structure. Among them, the flange bolts 4 are components for connecting the first flange 1 and the second flange 2. These bolts are usually made of high-strength alloy steel to ensure that they can withstand sufficient pressure and tension during the connection process; by passing the flange bolts 4 through a plurality of flange bolt holes 12 on the two flanges and using nuts for fastening, the two flanges can be firmly connected together. Among them, the plurality of flange bolt holes 12 are evenly distributed along the axis of the first surface of the first flange 1 and the second flange 2, as Figure 3As shown in the figure; the flange convex edge 11 is located at the edge of the first flange and the second flange, and is an edge that forms a raised circle. When the two flanges are fixedly connected by bolts, these convex edges will form a groove 8 at the connection; the groove 8 has a certain depth and width for accommodating the steel pressing plate 3, thereby enhancing the sealing performance of the sealed flange; the steel pressing plate 3 is made of high-strength steel plate, and its shape and size match the groove 8; when the steel pressing plate 3 is placed in the groove 8, it can effectively fill the voids in the groove and further compress and seal the connection between the two flanges. The technical solution of the present utility model improves the ability of the cutter head of the pipe jacking machine to cut concrete and enhances the efficiency of pipe jacking construction.

[0028] As Figure 1 shown, for the portal sealing flange for pipe jacking construction proposed in the embodiment of the present utility model, the steel pressing plate 3 includes:

[0029] A first pressing plate 31 and a second pressing plate 32; pressing strips 33 are provided at the ends of the first pressing plate 31 and the second pressing plate 32, and a pressing strip bolt hole is provided at the central position of the pressing strips 33. The first pressing plate 31 and the second pressing plate 32 are fixedly connected by a steel pressing plate bolt 5 passing through the pressing strip bolt hole;

[0030] The outer shapes of the first pressing plate 31 and the second pressing plate 32 are the same, both being semi-circular rings;

[0031] In this embodiment, the steel pressing plate 3 consists of two main parts: the first pressing plate 31 and the second pressing plate 32; the outer shapes of the first pressing plate 31 and the second pressing plate 32 are the same as the outer shape of the connection between the first flange 1 and the second flange 2. When the connection between the first flange 1 and the second flange 2 is a cylinder, as a preferred solution, the outer shapes of the first pressing plate 31 and the second pressing plate 32 can be designed to be exactly the same, both being semi-circular rings; pressing strips 33 are provided at the ends of both the first pressing plate 31 and the second pressing plate 32; at the central position of the pressing strips 33, a pressing strip bolt hole is provided. The steel pressing plate bolt 5 passing through the pressing strip bolt hole can fix and connect the first pressing plate 31 and the second pressing plate 32, and the two pressing plates are closely combined together to form a stable and reliable structure.

[0032] As Figure 4 shown, for the portal sealing flange for pipe jacking construction proposed in the embodiment of the present utility model, a gasket 7 is provided between the first flange 1 and the second flange 2, and the first surface of the gasket 7 has the same outer shape as the first surface of the first flange 1; a plurality of gasket holes 71 are provided on the gasket 7, and the plurality of flange bolts 4 pass through the plurality of flange bolt holes 12 and the plurality of gasket holes 71 to fixedly connect the first flange 1 and the second flange 2.

[0033] In this embodiment, the gasket 7 is arranged between the first flange 1 and the second flange 2 to enhance the sealing performance between the flanges and prevent groundwater, mud, etc. from leaking from the flange connection during the construction process; the first surface of the gasket 7 is exactly the same in shape as the first surface of the first flange 1, which can ensure that the gasket 7 can closely fit between the flanges and form an effective sealing barrier; at the same time, the gasket 7 is usually made of elastic materials such as rubber and polytetrafluoroethylene, and these materials have good corrosion resistance, wear resistance and sealing performance, and can maintain their performance in a harsh construction environment; the gasket 7 is provided with a plurality of gasket holes 71, and these holes correspond one by one to the flange bolt holes 12 on the first flange 1, so that a plurality of flange bolts 4 can pass through these holes to firmly fix and connect the first flange 1 and the second flange 2 together. When the bolts pass through the flange bolt holes 12 and the gasket holes 71 and are tightened, the two flanges can be tightly pressed together, and at the same time the gasket 7 is compressed, thus realizing the close fit and effective sealing between the flanges, preventing fluid leakage during the construction process. At the same time, the elastic material of the gasket 7 can absorb the vibration and impact during the construction process and extend the service life of the flange. Finally, this connection method is simple and reliable, easy to install and maintain, and reduces the construction cost and time; as a preferred solution, as Figure 5 shown, the first pressing plate 31, the second pressing plate 32 and the gasket 7 can be used in combination to enhance the sealing effect of the portal flange. Specifically, during the construction operation of the pipe jacking machine, the channel 6 is filled with high-pressure slurry, which easily causes the gasket 7 to turn out from the connection due to being unable to bear the pressure, resulting in fluid leakage at the connection of the two flanges and sealing failure; by arranging the first pressing plate 31 and the second pressing plate 32 at the connection of the two flanges and fixing and connecting the first pressing plate 31 and the second pressing plate 32 through the steel pressing plate bolts 5 passing through the pressing plate strip bolt holes, the two pressing plates are tightly combined together to form a stable and reliable structure, which can prevent the gasket 7 from turning out from the connection due to being unable to bear the pressure; at the same time, since the first pressing plate 31 and the second pressing plate 32 are arranged in the groove 8, the groove 8 can play a limiting role on the first pressing plate 31 and the second pressing plate 32 to prevent the first pressing plate 31 and the second pressing plate 32 from translating due to vibration during the construction operation of the pipe jacking machine, resulting in the gasket 7 turning out from the connection due to being unable to bear the pressure.

[0034] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle described in the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A portal seal flange for pipe jacking construction, characterized in that, Comprising: A first flange (1) and a second flange (2), wherein the first flange (1) and the second flange (2) are fixedly connected by a plurality of flange bolts (4); A flange convex edge (11) is provided at a first edge of the first flange (1) and the second flange (2); when the first flange (1) and the second flange (2) are fixedly connected, a groove (8) is formed at the connection and the flange convex edge (11); A steel pressing plate (3), and the steel pressing plate (3) is arranged in the groove (8).

2. The portal sealing flange according to claim 1, characterized in that, The first flange (1) and the second flange (2) have the same outer shape.

3. The portal sealing flange according to claim 2, wherein, A plurality of flange bolt holes (12) are evenly distributed along the axis on a first surface of the first flange (1) and the second flange (2), and the plurality of flange bolts (4) pass through the plurality of flange bolt holes (12) to fixedly connect the first flange (1) and the second flange (2).

4. The portal seal flange according to claim 1, characterized in that, The steel pressing plate (3) comprises: A first pressing plate (31) and a second pressing plate (32); Pressing strips (33) are provided at ends of the first pressing plate (31) and the second pressing plate (32), a pressing strip bolt hole is provided at a central position of the pressing strips (33), and the first pressing plate (31) and the second pressing plate (32) are fixedly connected by steel pressing plate bolts (5) passing through the pressing strip bolt holes.

5. The portal sealing flange according to claim 4, characterized in that The first pressing plate (31) and the second pressing plate (32) have the same outer shape, both being semi-circular rings.

6. The portal sealing flange according to claim 3, wherein A washer (7) is provided between the first flange (1) and the second flange (2), and a first surface of the washer (7) has the same outer shape as a first surface of the first flange (1).

7. The portal sealing flange according to claim 6, characterized in that, A plurality of washer holes (71) are provided on the washer (7), and the plurality of flange bolts (4) pass through the plurality of flange bolt holes (12) and the plurality of washer holes (71) to fixedly connect the first flange (1) and the second flange (2).

8. The portal sealing flange according to claim 6, characterized in that, The first flange (1), the second flange (2) and the steel pressing plate (3) are made of metal materials, and the washer (7) is made of rubber materials.

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