A cable tunnel jacking pipe

Abstract

The utility model discloses a cable tunnel top pipe, including top pipe main part, and top pipe main part includes steel pipe, inner layer concrete layer and outer layer concrete layer, and the inside of steel pipe is provided with inner layer concrete layer, and the outside is provided with outer layer concrete layer, and inner layer concrete layer is provided with embedded steel sheet, and one end of embedded steel sheet is welded on the inner wall of steel pipe, and the other end is worn and comes out inner layer concrete layer, and is provided with mounting hole to the brim, and one end of top pipe main part is provided with spigot ring, and the other end of top pipe main part is provided with socket ring, and the surface of spigot ring is provided with a plurality of butt joint recess, and the inner wall of socket ring is provided with the butt joint recess corresponding to butt joint recess. The utility model steel pipe and concrete layer composite structure not only solve the problem of electromagnetic interference through the metal shielding effect, but also enhance the compression strength of pipe body, and the steel pipe and embedded steel sheet constitute fixed part, and the cable support is detachably connected with embedded steel sheet through bolt, and the water expansion adhesive tape and butt joint recess form waterproof barrier, and improve waterproof effect.

Description

Technical Field

[0001] This utility model relates to the technical field of power tunnel jacking pipes, and more particularly to a cable tunnel jacking pipe. Background Technology

[0002] In the construction of urban power tunnels, pipe jacking technology is widely used due to its trenchless nature, but existing technologies have the following shortcomings:

[0003] Traditional pipe jacking connections have rudimentary waterproofing structures, making them prone to leakage and affecting cable operation safety. Cable support installation often involves on-site drilling, which damages the pipe section structure and has insufficient pressure resistance. The electromagnetic radiation generated by high-voltage cables can easily interfere with surrounding electronic equipment. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a cable tunnel jacking pipe.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cable tunnel jacking pipe includes a jacking pipe body, which comprises a steel pipe, an inner concrete layer, and an outer concrete layer. The inner concrete layer is disposed on the inner side of the steel pipe, and the outer concrete layer is disposed on the outer side. An embedded steel plate is disposed in the inner concrete layer. One end of the embedded steel plate is welded to the inner wall of the steel pipe, and the other end extends through the inner concrete layer. An installation hole is provided at the edge of the embedded steel plate. A spigot ring is disposed at one end of the jacking pipe body, and a socket ring is disposed at the other end of the jacking pipe body. The surface of the spigot ring is provided with multiple mating grooves, and the inner wall of the socket ring is provided with a receiving groove corresponding to the mating grooves.

[0007] The outer diameter of the spigot ring is smaller than the inner diameter of the socket ring, so that during installation, the spigot ring of one jacking pipe body can be inserted into the socket ring of another jacking pipe body for connection and fixation.

[0008] The docking groove is equipped with a water-swellable rubber strip. When the jacking pipe is exposed to water, the water-swellable rubber strip quickly expands and fills the docking groove, thereby achieving a sealing effect.

[0009] Cable brackets are installed on the pre-embedded steel plate through mounting holes.

[0010] The jacking pipe body is provided with a pair of pre-embedded steel plates corresponding to the top and bottom and two pairs of pre-embedded steel plates corresponding to the left and right. The pre-embedded steel plates corresponding to the top and bottom are set in the middle of the jacking pipe body, and the pre-embedded steel plates corresponding to the left and right are set at both ends of the jacking pipe body. The cable bracket can be suspended, supported, or installed on both sides, which is flexible and convenient.

[0011] Preferably, the steel pipe is made of Q345 steel, with a diameter of 40-100cm, a wall thickness of 3.5-5.0cm, and a length of 300-800cm.

[0012] Preferably, the embedded steel plate is an arc-shaped Q345 steel plate with a thickness of 3.5-5.0cm, coated with an electrical insulation layer, and the mounting holes are evenly arranged along the arc-shaped surface.

[0013] The beneficial effects of this utility model are as follows:

[0014] The composite structure of steel pipe and concrete layer not only solves the electromagnetic interference problem through the metal shielding effect, but also enhances the compressive strength of the pipe body; the steel pipe and the pre-embedded arc steel plate form a fixing part, and the cable bracket is detachably connected to the pre-embedded steel plate by bolts, avoiding damage to the pipe section by on-site drilling and improving installation efficiency; the water-swellable rubber strip and the receiving groove form a waterproof barrier, which greatly improves the waterproof effect. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a front cross-sectional view of the present invention;

[0018] Figure 4 This is a diagram of the docking structure of this utility model;

[0019] In the diagram: 1. Main body of the jacking pipe; 11. Steel pipe; 12. Inner concrete layer; 13. Outer concrete layer; 2. Socket ring; 21. Butt groove; 3. Socket ring; 31. Socket groove; 4. Embedded steel plate; 41. Mounting hole; 5. Cable bracket. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0021] Example 1

[0022] like Figure 1-4As shown, this utility model provides a cable tunnel jacking pipe, the structure of which includes a jacking pipe body 1, the jacking pipe body 1 including a steel pipe 11, an inner concrete layer 12 and an outer concrete layer 13. The inner concrete layer 12 is provided on the inner side of the steel pipe 11 and the outer concrete layer 13 is provided on the outer side. The inner concrete layer 12 is provided with a pre-embedded steel plate 4. One end of the pre-embedded steel plate 4 is welded to the inner wall of the steel pipe 11, and the other end passes through the inner concrete layer 12. An installation hole 41 is provided at the edge. One end of the jacking pipe body 1 is provided with a spigot ring 2 and the other end of the jacking pipe body 1 is provided with a socket ring 3. The surface of the spigot ring is provided with a plurality of mating grooves 21. The inner wall of the socket ring 3 is provided with a receiving groove 31 corresponding to the mating grooves 21.

[0023] The spigot ring 2 and the socket ring 3 on the main body 1 of the jacking pipe are set to correspond in size;

[0024] A water-swellable rubber strip is installed in the docking groove 21. After the jacking pipe is exposed to water, the water-swellable rubber strip quickly expands and fills the receiving groove 31. The cable bracket 5 is installed on the pre-embedded steel plate 4 through the mounting hole 41 and bolts.

[0025] A jacking pipe body 1 is provided with a pair of pre-embedded steel plates 4 corresponding to the top and bottom and two pairs of pre-embedded steel plates 4 corresponding to the left and right. The pre-embedded steel plates 4 corresponding to the top and bottom are set in the middle of the jacking pipe body 1, and the pre-embedded steel plates 4 corresponding to the left and right are set at both ends of the jacking pipe body 1.

[0026] Steel pipe 11 is made of Q345 steel, with a diameter of 40-100cm, a wall thickness of 3.5-5.0cm, and a length of 300-800cm.

[0027] The embedded steel plate 4 is an arc-shaped Q345 steel plate with a thickness of 3.5-5.0cm, coated with an electrical insulation layer, and the mounting holes 41 are evenly arranged along the arc surface.

[0028] Specifically, during installation, the pipe sections are pushed forward one by one using a jacking device. After the socket ring 3 on one jacking pipe body is connected to the spigot ring 2 on another jacking pipe body, the water-swellable rubber strip in the docking groove 21 expands and fills the receiving groove 31 to form a sealing ring. The cable bracket 5 is installed through the mounting holes 41 on the pre-embedded steel plate 4 and bolts.

Claims

1. A cable tunnel jacking pipe, characterized in that: The device includes a jacking pipe body, which comprises a steel pipe, an inner concrete layer, and an outer concrete layer. The inner concrete layer is located on the inner side of the steel pipe, and the outer concrete layer is located on the outer side. An embedded steel plate is installed in the inner concrete layer. One end of the embedded steel plate is welded to the inner wall of the steel pipe, and the other end extends out of the inner concrete layer. An installation hole is provided at the edge of the embedded steel plate. A spigot ring is provided at one end of the jacking pipe body, and a socket ring is provided at the other end. The surface of the spigot ring is provided with multiple mating grooves, and the inner wall of the socket ring is provided with a receiving groove corresponding to the mating grooves.

2. The cable tunnel jacking pipe according to claim 1, characterized in that: The docking groove is provided with a water-swellable rubber strip.

3. The cable tunnel jacking pipe according to claim 1, characterized in that: Cable brackets are installed on the pre-embedded steel plate through mounting holes.

4. A cable tunnel jacking pipe according to claim 1, characterized in that: The jacking pipe body is provided with a pair of pre-embedded steel plates corresponding to the top and bottom and two pairs of pre-embedded steel plates corresponding to the left and right. The pre-embedded steel plates corresponding to the top and bottom are set in the middle of the jacking pipe body, and the pre-embedded steel plates corresponding to the left and right are set at both ends of the jacking pipe body.

5. A cable tunnel jacking pipe according to claim 1, characterized in that: The steel pipe is made of Q345 steel, with a diameter of 40-100cm, a wall thickness of 3.5-5.0cm, and a length of 300-800cm.

6. A cable tunnel jacking pipe according to claim 1, characterized in that: The embedded steel plate is an arc-shaped Q345 steel plate with a thickness of 3.5-5.0cm, coated with an electrical insulation layer, and the mounting holes are evenly arranged along the arc-shaped surface.

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