Composite intermediate jacking station

Abstract

The utility model discloses a composite intermediate jacking station in the technical field of pipe jacking construction, a slag removal groove is formed in the surface of a pipe body of the intermediate jacking station, a first blocking piece and a second blocking piece are arranged to block a first opening and a second opening of the slag removal groove respectively, and the slag removal groove is blocked through cooperation of the first blocking piece, the second blocking piece and the slag removal groove. Sediments outside a pipe body are cleaned, friction force borne by a pipe joint in the pipeline jacking process is reduced, meanwhile, the friction force difference borne by the surface of the pipe joint is reduced, normal pipe jacking construction is ensured, the efficiency of pipe jacking construction is improved, the surface of the pipe joint is prevented from being extruded by broken stones, and the construction quality of the pipe joint is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking construction, in particular to a composite relay jacking section. Background Art

[0002] With the increasing saturation of urban development in China, the demand for underground space development is constantly increasing, and the pipe jacking method is becoming more and more common for various water conservancy and power pipelines.

[0003] During the process of pipe jacking construction, soil residues and crushed stone residues will fall on the circumferential surface of the excavated tunnel. With the vibration generated during the jacking of the pipe section, these soil residues and crushed stone residues will slowly gather in the gap between the bottom end of the pipe section and the bottom end of the tunnel, making the friction at the bottom end of the pipe section much greater than the friction at the top end during the jacking process of the pipe section, resulting in uneven friction on the pipe section. At the same time, during the jacking process of the pipe section, the crushed stones at the bottom end of the pipe section will roll. Since the shapes of the crushed stones are irregular, the pipe section may be lifted upward during the rolling of the crushed stones, causing the axis of the pipe section to shift or external damage.

[0004] Based on this, the utility model designs a composite relay jacking section to solve the above problems. Content of the Utility Model

[0005] To achieve the above object, the utility model provides the following technical solution: a composite relay jacking section, including a pipe body and a plugging assembly; a slag cleaning groove is formed on the surface of the pipe body, and the slag cleaning groove penetrates through the inner surface and the outer surface of the pipe body for collecting sediment. The opening of the slag cleaning groove on the inner surface of the pipe body is the first opening, and the opening on the outer surface of the pipe body is the second opening; the plugging assembly includes a first plugging member and a second plugging member. The first plugging member is used for plugging the first opening, and the second plugging member is used for plugging the second opening when the first opening is open.

[0006] As a further solution of the utility model, the first plugging member is a sealing plate, and the sealing plate is detachably installed on the inner surface of the pipe body through a fixing member.

[0007] As a further solution of the utility model, a step groove for installing the sealing plate is formed around the first opening on the inner surface of the pipe body, and a sealing gasket is arranged in the step groove.

[0008] As a further solution of the utility model, the second plugging member is two air bags, the air bags are arranged annularly on the outer surface of the pipe body, and the slag cleaning groove is located between the two air bags, so that the slag cleaning groove is located in the plugging area of the air bags.

[0009] As a further solution of the utility model, an air inlet for inflating the air bags is fixedly installed on the side wall of the pipe body. The first end of the air inlet extends into the pipe body, and the second end extends out of the outer surface of the pipe body and is communicated with the air bags.

[0010] As a further solution of the present utility model, the positions of the two air bags in the axial direction of the pipe body are respectively close to the front end face and the rear end face of the pipe body.

[0011] As a further solution of the present utility model, a pressure relief device is further included, and the pressure relief device is used to release the pressure of the liquid or / and gas in the slag cleaning tank before the first opening is released.

[0012] As a further solution of the present utility model, the pressure relief device is a pressure relief port, and the pressure relief port is arranged on the first plugging member or on the inner surface of the pipe body.

[0013] As a further solution of the present utility model, the axial projection of the pipe body is the same as the axial projection of the pipe joint.

[0014] As a further solution of the present utility model, the opening shape of the slag cleaning tank is rectangular.

[0015] The present utility model has the following beneficial effects:

[0016] By opening a slag cleaning tank on the surface of the pipe body in the relay chamber, and arranging a first plugging member and a second plugging member to respectively plug the first opening and the second opening of the slag cleaning tank, through the cooperation of the first plugging member, the second plugging member and the slag cleaning tank, the cleaning of the sediment outside the pipe body is realized, the friction force received by the pipe joint during the pipe jacking process is reduced, and at the same time, the friction force difference received by the surface of the pipe joint is reduced, ensuring the normal progress of the pipe jacking construction, increasing the efficiency of the pipe jacking construction, preventing the crushed stones from squeezing the surface of the pipe joint, and improving the construction quality of the pipe joint.

[0017] In addition to the purposes, features and advantages described above, the present utility model has other purposes, features and advantages. The following will refer to the drawings to make a further detailed description of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0020] Figure 2 is a front view schematic diagram of the present utility model.

[0021] Figure 3 is Figure 2 an enlarged schematic diagram of part A of

[0022] Figure 4 is a top view schematic diagram of the present utility model.

[0023] Legend Explanation:

[0024] 1. Pipe body; 11. Slag removal groove; 12. Step groove; 2. Sealing plate; 3. Airbag; 31. Inflation port; 4. Pressure relief port. Specific Embodiment

[0025] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. However, the present utility model can be implemented in many different ways defined and covered by the following.

[0026] Please refer to Figures 1-4 , the present utility model provides a composite relay chamber, including a pipe body 1 and a plugging assembly. A slag removal groove 11 penetrating the inner surface and the outer surface of the pipe body 1 is provided on the pipe body 1. During use, the slag removal groove 11 can communicate the inside and outside of the pipe body 1 to realize the cleaning of the sediment outside the pipe body 1 inside the pipe body 1. However, since muddy water will seep out from the excavation surface during the excavation process, in order to prevent the muddy water from entering the pipe body 1 through the slag removal groove 11, a first plugging member is provided to plug the first opening of the slag removal groove 11. However, when cleaning the slag, the first opening must be opened. Therefore, a second plugging member is provided to plug the second opening of the slag removal groove 11. In this way, when it is necessary to clean the sediment, first block the second opening of the slag removal groove 11 through the second plugging assembly, and then open the first plugging member to open the first opening of the slag removal groove 11, so as to clean the slag removal groove 11 inside the pipe body 1, clean the sediment outside the pipe body 1, reduce the friction force received during the pipe jacking process, ensure the normal progress of the pipe jacking construction, and increase the efficiency of the pipe jacking construction.

[0027] Specifically, the opening of the slag removal groove 11 on the inner surface of the pipe body 1 is the first opening, and the opening on the outer surface of the pipe body 1 is the second opening.

[0028] Figures 1-3 An example of the first plugging member is shown. In this example, the first plugging member is a sealing plate 2. The first opening is plugged by directly covering the sealing plate 2 on the surface of the first opening to prevent muddy water from entering the inner cavity of the pipe body 1 through the slag removal groove 11 during the jacking process. At the same time, the sealing plate 2 is installed in the inner cavity of the pipe body 1 through bolts to realize the detachable installation of the sealing plate 2, which is convenient for disassembling the sealing plate 2 when it is necessary to clean the sediment;

[0029] A step groove 12 for installing the sealing plate 2 is provided around the first opening on the inner surface of the pipe body 1. A sealing gasket is provided in the step groove 12. When the sealing plate 2 seals the first opening, the sealing gasket will be squeezed between the sealing plate 2 and the step groove 12. The cooperation of the step groove 12 and the sealing gasket increases the sealing effect of the sealing plate 2 on the first opening and improves the use safety.

[0030] Figures 1-2An example of the second plugging member is shown. In this example, the second plugging member is two air bags 3. The two air bags 3 are arranged around the outer surface of the pipe body 1, and the two air bags 3 are respectively located on the front side and the rear side of the slag cleaning groove 11, so that the slag cleaning groove 11 is in the area between the two air bags 3. After the air bags 3 expand and closely fit the excavation face, an area isolated from the outside will be formed between the two air bags 3. The slag cleaning groove 11 located between the two air bags 3 can also be isolated from the outside. After the air bags 3 are retracted, it will not affect the normal pipe jacking. It is simple and convenient to use. At the same time, the air bags 3 can better fit the excavation face and improve the isolation effect;

[0031] When it is necessary to clean the sediment outside the pipe body 1, first inflate one of the two air bags 3 to fit the excavation face to form a partition. Next, flush the sediment at the bottom of the pipe body 1 through the circulating pipeline of the mud system. The sediment is collected at the position of the air bag 3 that expands at the bottom between the pipe bodies 1 under the action of pressure. Then, inflate the other air bag 3, and the two air bags 3 expand to form a relatively sealed chamber, realizing the collection of the sediment at the bottom of the pipe body 1 and improving the efficiency of sediment cleaning;

[0032] Specifically, the installation positions of the two air bags 3 on the pipe body 1 are respectively close to the front end face and the rear end face of the pipe body 1 to increase the distance between the two air bags 3 in the axial direction of the pipe body 1 and improve the space between the air bags 3. When opening the first opening to clean the sediment, the area between the slag cleaning groove 11 and the two air bags 3 is connected as a whole. That is to say, the larger the distance between the two air bags 3, the larger the range of sediment that can be cleaned at one time, improving the sediment cleaning effect of a single sediment cleaning and the overall sediment cleaning efficiency.

[0033] As Figures 1-2 shown, an air inlet 31 is fixedly installed on the side wall of the pipe body 1. One end of the air inlet 31 extends into the inner cavity of the pipe body 1, and the other end extends out of the pipe body 1 and is connected to the air bag 3 outside the pipe body 1. By connecting the air inlet 31 at one end inside the pipe body 1 through an inflation device, the inflation and deflation of the air bag 3 are realized. The inflation and deflation of the air bag 3 are realized inside the pipe body 1, and the operation is more convenient and simple.

[0034] Furthermore, the composite relay chamber further includes a pressure relief device. Before opening the first opening, it is necessary to release the pressure in the area between the two air bags 3 through the pressure relief device, including the pressure of the muddy water and the pressure of the air, to ensure safety when opening the first opening.

[0035] As Figure 2As shown, the pressure relief device is the pressure relief port 4. The pressure relief port 4 is installed on the sealing plate 2. Before disassembling the sealing plate 2 to open the first opening, first release the pressure in the area between the two air bags 3 through the pressure relief port 4 to ensure the safety of the staff when disassembling the sealing plate 2. Optionally, the pressure relief port 4 can also be installed on the inner surface of the pipe body 1 and communicated with the outer surface of the pipe body 1 through a pipeline, as long as the pressure in the area between the two air bags 3 can be released from the inside of the pipe body 1.

[0036] Furthermore, the axial projection of the pipe body 1 is the same as that of the pipe joint. When the pipe body 1 is coaxially arranged with the pipe joint, there will be no step at the connection between the outer surface of the pipe body 1 and the outer surface of the pipe joint, preventing the accumulation of sediment and reducing the frictional force during jacking.

[0037] As Figure 4 shown, the opening shape of the slag cleaning tank 11 is rectangular, and the opening size of the slag cleaning tank 11 is increased under the same opening width and length.

[0038] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A composite relay room, characterized in that: It includes a pipe body (1) and a plugging assembly; A slag cleaning groove (11) is formed on the surface of the pipe body (1). The slag cleaning groove (11) penetrates the inner surface and the outer surface of the pipe body (1) for collecting sediment. The opening of the slag cleaning groove (11) on the inner surface of the pipe body (1) is the first opening, and the opening on the outer surface of the pipe body (1) is the second opening; The plugging assembly includes a first plugging member and a second plugging member. The first plugging member is used to plug the first opening, and the second plugging member is used to plug the second opening when the first opening is open.

2. The composite relay chamber according to claim 1, wherein: The first plugging member is a sealing plate (2), and the sealing plate (2) is detachably installed on the inner surface of the pipe body (1) through a fixing member.

3. The composite relay chamber according to claim 2, wherein: A step groove (12) for installing the sealing plate (2) is formed around the first opening on the inner surface of the pipe body (1), and a sealing gasket is provided in the step groove (12).

4. A composite relay chamber according to claim 1, characterized in that: The second plugging member is two air bags (3). The air bags (3) are arranged around the outer surface of the pipe body (1). The slag cleaning groove (11) is located between the two air bags (3), so that the slag cleaning groove (11) is located in the plugging area of the air bags (3).

5. The composite relay chamber according to claim 4, wherein: An air inlet (31) for inflating the air bags (3) is fixedly installed on the side wall of the pipe body (1). The first end of the air inlet (31) extends into the pipe body (1), and the second end extends out of the outer surface of the pipe body (1) and is communicated with the air bags (3).

6. The composite relay room according to claim 4, characterized in that: The positions of the two air bags (3) in the axial direction of the pipe body (1) are respectively close to the front end face and the rear end face of the pipe body (1).

7. A composite relay room according to claim 1, characterized in that: It also includes a pressure relief device, which is used to release the pressure of the liquid or / and gas in the slag cleaning groove (11) before the first opening is opened.

8. A composite relay room according to claim 7, characterized in that: The pressure relief device is a pressure relief port (4), and the pressure relief port (4) is arranged on the first plugging member or on the inner surface of the pipe body (1).

9. A composite relay chamber according to claim 1, wherein: The axial projection of the pipe body (1) is the same as the axial projection of the pipe joint.

10. A composite relay room according to claim 1, characterized in that: The opening shape of the slag cleaning groove (11) is rectangular.

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