Detachable intermediate jacking station

Abstract

The utility model relates to the technical field of pipe jacking construction, in particular to a detachable intermediate jacking station which comprises a first shell, a second shell and an intermediate jacking station oil cylinder, the first shell is arranged in a socket steel ring of a first pipe joint, the second shell is connected with a second pipe joint and inserted into the socket steel ring, the second shell is connected with the socket steel ring in a sliding mode, and the intermediate jacking station oil cylinder is connected with the intermediate jacking station oil cylinder. An intermediate jacking station oil cylinder is arranged between the first shell and the second shell and used for achieving jacking of the first pipe joint or the second pipe joint. Each of the first shell and the second shell comprises a plurality of annular sub-blocks, and the annular sub-blocks are spliced to form a circular ring structure; the arc length of an outer ring arc of at least one annular block is smaller than that of an inner ring arc. The intermediate jacking station provided by the embodiment is simple in structure and convenient to disassemble, the intermediate jacking station does not perform supporting operation in a tunnel pipe joint, all components are detachable and convenient to recycle or reuse, and the construction cost is reduced.

Description

Technical Field

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

[0002] A pipe jacking machine is a tunnel excavation equipment that uses the pipe jacking method. In recent years, with the increasing number of urban subways, highways, railway tunnels, water diversion shield tunnels, etc., pipe jacking machines and their supporting technologies have been widely used in underground tunnel construction. The relay room is an important equipment of the pipe jacking machine. When the construction of the pipe jacking machine is completed, it is often necessary to dismantle the relay room and leave the relay room shell in the tunnel as a permanent structure, so that the relay room shell cannot be reused or recycled, increasing construction costs.

[0003] Based on the above, there is an urgent need to design a detachable relay room to solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of this utility model is to provide a detachable relay room, and the specific technical solution is as follows:

[0005] A detachable relay chamber comprises a first housing, a second housing and a relay chamber oil cylinder. The first housing is disposed in a socket steel ring of a first pipe section. The second housing is connected to the second pipe section and inserted into the socket steel ring. The second housing is slidably connected to the socket steel ring. A relay chamber oil cylinder is disposed between the first and second housings for jacking the first or second pipe section.

[0006] The first shell and the second shell both include a plurality of annular blocks, which are spliced ​​together to form a circular ring structure; the arc length of the outer circle of at least one annular block is smaller than the arc length of the inner circle.

[0007] Furthermore, a plurality of the relay oil cylinders are evenly distributed along the circumference of the first shell, the fixed end of the relay oil cylinder abuts against the end surface of the first pipe section, and the telescopic end of the relay oil cylinder abuts against the second shell.

[0008] Furthermore, the first shell and the second shell each include 6 annular blocks, namely 1 top annular block, 2 upper annular blocks, 2 side annular blocks and 1 bottom annular block, and adjacent annular blocks are detachably connected by connecting pieces.

[0009] Furthermore, the arc length of the outer circle of the top annular block is smaller than the arc length of the inner circle.

[0010] Furthermore, three relay oil cylinders are evenly distributed on the top annular block and the upper annular block, and five relay oil cylinders are evenly distributed on the side annular block and the bottom annular block.

[0011] Furthermore, a sealing assembly is provided along the circumferential outer side of the second shell, and the sealing assembly is used to achieve sealing between the second shell and the socket steel ring of the first pipe joint.

[0012] Furthermore, the sealing assembly includes a first sealing member and a second sealing member, the cross-sectional shape of the first sealing member is rectangular, and the cross-sectional shape of the second sealing member is tooth-shaped.

[0013] The application of the technical solution of the utility model has the following beneficial effects:

[0014] (1) The utility model provides a detachable relay room, comprising a first shell, a second shell and a relay room oil cylinder, wherein the first shell is arranged in the socket steel ring of the first pipe section, the second shell is connected to the second pipe section and inserted into the socket steel ring, the second shell is slidably connected to the socket steel ring, and a relay room oil cylinder is arranged between the first shell and the second shell for realizing the jacking of the first pipe section or the second pipe section; the first shell and the second shell each comprise a plurality of annular blocks, the plurality of annular blocks being spliced ​​together to form a circular ring structure; the arc length of the outer circle of at least one annular block is less than the arc length of the inner circle. The relay room provided in this embodiment only comprises the first shell, the second shell and the relay room oil cylinder, and the first shell and the second shell are both detachable annular block structures, which are simple in structure and easy to disassemble, especially the arc length of the outer circle of at least one annular block is less than the arc length of the inner circle, making it easier to disassemble the first shell and the second shell in the tunnel; the relay room provided in this embodiment does not perform support operations in the tunnel pipe section, and all components are detachable, which is convenient for recycling or reuse, thereby reducing construction costs.

[0015] (2) In the present invention, a plurality of relay cylinders are evenly distributed along the circumference of the first shell, the fixed end of the relay cylinder abuts against the end face of the first pipe section, and the telescopic end of the relay cylinder abuts against the second shell. The first shell provides installation support for the relay cylinder, and the relay cylinder extends to transmit the jacking force to the second shell and the second pipe section, thereby realizing the jacking of the first pipe section.

[0016] (3) In the present invention, a sealing assembly is provided along the circumferential outer side of the second shell, and the sealing assembly includes a first seal and a second seal. The first seal and the second seal form two sealing structures to ensure the sealing performance between the second shell and the socket steel ring of the first pipe section, thereby ensuring the smooth advancement of the pipe section.

[0017] (4) In the present invention, the cross-sectional shape of the second sealing member is a tooth shape, which can increase the deformation range of the second sealing member and improve the sealing performance.

[0018] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the detachable relay room;

[0021] Figure 2 This is a schematic diagram of the detachable relay room after installation in the embodiment of the present utility model;

[0022] Figure 3 is a structural schematic diagram of the first shell;

[0023] Figure 4 is a schematic diagram of the second shell;

[0024] Figure 5 It is a schematic diagram of the connection between the ring blocks;

[0025] Figure 6 is a schematic diagram of the sealing assembly;

[0026] Figure 7 The diagram is a working principle diagram of a detachable relay room, wherein (a) is a schematic diagram of the relay room in its initial state, (b) is a schematic diagram of the relay room when the oil cylinder is extended, and (c) is a schematic diagram of the connection state of the first pipe section and the second pipe section after the relay room is dismantled;

[0027] Among them, 1. First shell, 2. Second shell, 3. Relay cylinder, 4. First pipe section, 5. Second pipe section, 6. Sealing assembly, 6.1. First seal, 6.2. Second seal, 7. Connector, A. Socket steel ring. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0031] Example

[0032] See also Figure 1 and Figure 2 This embodiment provides a detachable relay room, including a first shell 1, a second shell 2 and a relay room cylinder 3. The first shell 1 is arranged in the socket steel ring A of the first pipe section 4 (the socket steel ring A is sleeved on the outside of the first pipe section 4), the second shell 2 is connected to the end face of the second pipe section 5 and inserted into the socket steel ring A, the second shell 2 is slidably connected to the socket steel ring A, and a relay room cylinder 3 is arranged between the first shell 1 and the second shell 2 to realize the jacking of the first pipe section 4 or the second pipe section 5; in this embodiment, the axial dimension of the socket steel ring A must meet the requirement that when the relay room cylinder 3 is extended to the limit state, the end of the second shell 2 and / or the second pipe section 5 is still located in the socket steel ring A.

[0033] The first shell 1 and the second shell 2 both include multiple annular blocks, which are spliced ​​to form a circular ring structure; the outer arc length of at least one annular block is smaller than the inner arc length, making it easier to disassemble the first shell 1 and the second shell 2 in the tunnel.

[0034] The relay room provided in this embodiment only includes a first shell 1, a second shell 2 and a relay room cylinder 3. The first shell 1 and the second shell 2 are both detachable annular block structures with a simple structure and easy disassembly. In particular, the outer arc length of at least one annular block is smaller than the inner arc length, making it easier to disassemble the first shell 1 and the second shell 2 in the tunnel; the relay room provided in this embodiment does not perform support operations in the tunnel pipe section, and all components are detachable, which is convenient for recycling or reuse, thereby reducing construction costs.

[0035] In this embodiment, the first pipe section 4 is a pipe section pushed in the relay room, and the second pipe section 5 is a pipe section pushed in by the main push cylinder of the pipe jacking machine.

[0036] See also Figure 1-Figure 3 The relay oil cylinder 3 is evenly distributed along the circumference of the first shell 1 in multiple arrangements. The fixed end of the relay oil cylinder 3 abuts against the end face of the first pipe section 4, and the telescopic end of the relay oil cylinder 3 abuts against the second shell 2. When the detachable relay is in operation, the telescopic end of the relay oil cylinder 3 extends to transmit the jacking force to the second shell 2 and the second pipe section 5. Since the second pipe section 5 is fixed by the main push oil cylinder, the jacking force is reversely transmitted to the first pipe section 4, thereby achieving the jacking of the first pipe section 4. In long-distance pipe jacking construction, the detachable relay effectively transmits the propulsion force by jacking in sections, solving the problem of increased construction difficulty caused by insufficient jacking force due to the increase in the length of the construction tunnel.

[0037] See also Figure 3-Figure 5 The first shell 1 and the second shell 2 each include 6 annular blocks, namely 1 top annular block, 2 upper annular blocks, 2 side annular blocks and 1 bottom annular block. Adjacent annular blocks are detachably connected by connecting members 7, and the connecting members 7 are preferably bolts and nuts for easy disassembly and assembly.

[0038] See also Figure 3 and Figure 4 In this embodiment, the arc length of the outer circle of the top annular block is smaller than the arc length of the inner circle, which facilitates the removal of the first annular block in the tunnel (in this embodiment, the top annular block is removed first).

[0039] In this embodiment, three relay cylinders 3 are evenly distributed on the top annular block and the upper annular block, and five relay cylinders 3 are evenly distributed on the side annular block and the bottom annular block, so as to evenly apply the jacking force to the pipe joint.

[0040] In this embodiment, a sealing assembly 6 is provided along the circumferential outer side of the second shell 2. The sealing assembly 6 is used to achieve sealing between the second shell 2 and the socket steel ring A of the first pipe segment 4 to prevent water, soil and slurry outside the pipe segment from pouring into the pipe segment and affecting the advancement of the pipe segment.

[0041] Preferably, see Figure 6The sealing assembly 6 includes a first sealing member 6.1 and a second sealing member 6.2. The first sealing member 6.1 is a rubber sealing ring with a rectangular cross-section, and is arranged in a sealing groove arranged along the circumferential outer side of the second shell 2; the second sealing member 6.2 is a rubber sealing ring with a tooth-shaped cross-section. The second sealing member 6.2 is arranged on the circumferential outer side of the second shell 2 near one end of the relay cylinder 3 through a pressure block. The tooth-shaped cross-section of the second sealing member 6.2 can increase the deformation range of the second sealing member 6.2 and improve the sealing performance.

[0042] In this embodiment, a two-stage sealing structure is formed by providing the first sealing member 6.1 and the second sealing member 6.2 to ensure the sealing performance between the second shell 2 and the socket steel ring A of the first pipe segment 4, thereby ensuring the smooth advancement of the pipe segment.

[0043] See also Figure 7 The working process of the detachable relay room is as follows: Initially, see Figure 7 (a), the relay room oil cylinder 3 is in the retracted state; when working, see Figure 7 (b), the intermediate oil cylinder 3 extends, and the thrust is transmitted to the second shell 2 and the second pipe section 5, thereby achieving the jacking of the first pipe section 4; after the construction is completed, see Figure 7 (c) Remove the first shell 1, the second shell 2 and the intermediate cylinder 3. The main push cylinder pushes the second pipe section 5 forward to fit it with the first pipe section 4, and fills the joint with concrete to ensure the integrity and sealing of the pipeline structure.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A detachable relay room, characterized in that: The invention comprises a first shell (1), a second shell (2) and a relay oil cylinder (3), wherein the first shell (1) is arranged in the socket steel ring of the first pipe section (4), the second shell (2) is connected to the second pipe section (5) and inserted into the socket steel ring, the second shell (2) is slidably connected to the socket steel ring, and a relay oil cylinder (3) is arranged between the first shell (1) and the second shell (2) for realizing the jacking of the first pipe section (4) or the second pipe section (5); The first shell (1) and the second shell (2) both comprise a plurality of annular blocks, which are spliced ​​together to form a circular ring structure; the arc length of the outer circle of at least one annular block is smaller than the arc length of the inner circle.

2. A detachable relay room according to claim 1, characterized in that: A plurality of the intermediate oil cylinders (3) are evenly distributed along the circumference of the first shell (1); the fixed end of the intermediate oil cylinder (3) abuts against the end surface of the first pipe section (4); and the telescopic end of the intermediate oil cylinder (3) abuts against the second shell (2).

3. A detachable relay room according to claim 2, characterized in that: The first shell (1) and the second shell (2) each comprise six annular blocks, namely one top annular block, two upper annular blocks, two side annular blocks and one bottom annular block, and adjacent annular blocks are detachably connected via connectors (7).

4. The detachable relay room according to claim 3, characterized in that: The arc length of the outer circle of the top annular block is smaller than the arc length of the inner circle.

5. The detachable relay room according to claim 4, characterized in that: Three relay oil cylinders (3) are evenly distributed on the top annular block and the upper annular block, and five relay oil cylinders (3) are evenly distributed on the side annular block and the bottom annular block.

6. The detachable relay room according to claim 1, characterized in that: The second shell (2) is provided with a sealing assembly (6) along the circumferential outer side, and the sealing assembly (6) is used to achieve sealing between the second shell (2) and the socket steel ring of the first pipe section (4).

7. The detachable relay room according to claim 6, characterized in that: The sealing assembly (6) comprises a first sealing member (6.1) and a second sealing member (6.2); the cross-sectional shape of the first sealing member (6.1) is rectangular, and the cross-sectional shape of the second sealing member (6.2) is tooth-shaped.

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