A pipe pusher device

Abstract

The utility model provides a pipeline jacking device, including foundation pit, the waste pipeline is disconnected by foundation pit, forms first pipe culvert and second pipe culvert, the wall surface of foundation pit corresponding first pipe culvert position is first wall surface, the wall body of foundation pit is opposite first pipe culvert and is provided, the back of wall body abuts against first wall surface, the wall body front is provided with the jack, the jack is supported in the pit bottom of foundation pit through support, two slides are symmetrically set in the pit inside left and right, two slides are supported in the pit bottom of foundation pit by support, the pipeline of waiting to wear is supported by two slides, opposite second pipe culvert. The utility model discloses simple structure, jack, jacking piece and several jacking pipes are combined operation, and the pipeline is stepped jacking, realizes the laying of several pipelines, construction under the environment of non full excavation, in the limited construction space.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline construction, and in particular relates to a pipeline jacking device. Background Technology

[0002] In urban water supply or drainage systems, leaks can occur in old pipes after prolonged use. Since these old pipes are often laid under main urban roads or near municipal construction sites, it is impossible to carry out full-excavation construction for new pipes. Therefore, how to utilize existing old pipes and how to complete the laying of new pipes within the limited construction space without full-excavation has become an urgent problem for existing pipeline construction teams. Utility Model Content

[0003] In view of this, the present invention aims to propose a pipeline jacking device to realize new pipeline jacking operations in a limited space without full excavation, so as to complete the laying of new pipelines.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A pipe jacking device includes a pit, which disconnects an old pipe to form a first culvert and a second culvert. The wall of the pit corresponding to the position of the first culvert is a first wall. A wall is set in front of the pit facing the first culvert, and the back of the wall is close to the first wall. A jack is set in front of the wall and is supported at the bottom of the pit by a bracket. Two sliding tracks are symmetrically arranged on the left and right sides in the pit and are supported at the bottom of the pit by a bracket. The pipe to be installed is supported by the two sliding tracks and faces the second culvert.

[0006] It also includes a jacking component and a jacking pipe that are sequentially installed between the jack and the pipe. Both the jacking component and the jacking pipe are supported by two slides, and the diameter of the jacking pipe is the same as that of the pipe.

[0007] The jacking pipe is provided in several parts. Each time the jack pushes the jacking component and drives the jacking pipe to move the pipeline one stroke distance in the direction of the second culvert, it retracts. Each time the jacking rod retracts, a jacking pipe is added between the existing jacking pipe and the jacking component before the next jacking operation is carried out, until the pipeline moves a distance greater than or equal to the length of one pipeline.

[0008] Furthermore, the jacking component is a U-shaped frame structure, which includes two U-shaped plates arranged opposite each other at the front and back, and a connecting plate connecting the two U-shaped plates. The connecting plate is located on the inner side of the edge of the U-shaped plate, and the two U-shaped plates are connected by several stiffeners on the outer side of the connecting plate.

[0009] Furthermore, the jacking component is equipped with a positioning sleeve for the corresponding jack. During jacking, the jack push rod extends into the positioning sleeve and abuts against the jacking component.

[0010] Furthermore, the insertion port of the positioning sleeve is a tapered insertion port.

[0011] Furthermore, there are two jacks arranged symmetrically on the left and right sides. The two jacks are positioned below and close to the center of the pipe, and axially upwards, the two jacks are directly opposite the pipe wall.

[0012] Furthermore, the outer circumferential surface of one end of the pusher pipe is provided with an outer conical surface structure corresponding to the conical socket of the pipe, and the inner circumferential surface of the other end of the pusher pipe is provided with a conical socket structure corresponding to the outer conical surface structure.

[0013] Furthermore, the wall is a square steel box structure, which is filled with concrete, or the steel box is connected between its front and rear side walls by several connecting ribs.

[0014] Compared with the prior art, the pipe jacking device of this utility model has the following advantages:

[0015] (1) This utility model has a simple structure. The jack, the jacking component and several jacking pipes work together to push the pipeline step by step, so as to complete the laying and construction of several pipelines in a limited construction space in a non-excavation environment.

[0016] (2) In this utility model, the jacking component adopts a U-shaped frame structure, and several stiffening plates are set between the front and rear U-shaped plates. Under the premise of ensuring the strength of the jacking component, the weight of the jacking component is reduced as much as possible, so as to facilitate the hoisting of the jacking component and the addition of the jacking pipe, and to facilitate the construction.

[0017] (3) In this utility model, a socket structure is provided between the jacking pipe and the pipe, and a socket structure is provided between two adjacent jacking pipes. The jacking position of the pipe is located at the pipe wall position, which improves the stability of the jacking operation. Attached Figure Description

[0018] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0019] Figure 1 This is a front view of a pipe jacking device according to an embodiment of the present utility model;

[0020] Figure 2 This is a top view of a pipe jacking device according to an embodiment of the present utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the jacking component in this embodiment;

[0022] Figure 4This is a front sectional view of the pusher tube in this embodiment;

[0023] Figure 5 This is a diagram showing the position of the jack pushing the pipe in this embodiment;

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-First culvert; 2-Wall; 4-Jack; 5-Foundation pit; 51-First wall surface; 6-Pushing component; 61-U-shaped plate; 62-Connecting plate; 63-Firming plate; 64-Positioning sleeve; 641-Insertion port; 7-Pushing pipe; 71-Outer conical surface structure; 72-Conical socket structure; 8-Pipe; 9-Slide rail; 10-Support; 12-Second culvert. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] like Figure 1 , Figure 2 As shown, a pipe jacking device includes an underground excavation pit 5. The pit 5 disconnects an old pipe, forming a first culvert 1 and a second culvert 12. The wall surface of the pit 5 at the location of the first culvert 1 is a first wall surface 51, which is a vertical wall perpendicular to the central axis of the old pipe. A wall 2 is set in the pit 5 directly opposite the first culvert 1, with the back of the wall 2 close to the first wall surface 51. The wall 2 is preferably a square steel box structure, filled with concrete, or connected between its front and rear side walls by several connecting stiffeners. The wall 2 is fixed to the bottom of the pit 5. For example, the wall 2 can be fixed by pre-embedded bolts, or by welding or screwing the wall 2 to a fixing plate pre-embedded in the bottom of the pit, or by directly fixing the wall to the first wall surface 51 through pre-embedded parts. The fixing of the wall 2 is a conventional technique and will not be described in detail here. Two jacks 4 are installed in front of the wall 2 facing the second culvert 12. Both jacks 4 are supported by brackets 10 at the bottom of the pit 5. The two jacks 4 are symmetrical about the central axis of the first culvert 1, and the two jacks 4 are located below and close to the central axis facilities.

[0028] At the bottom of pit 5, two sliding tracks 9 are also installed via supports 10. These tracks 9 are symmetrically positioned left and right about the central axis of the second culvert 12. The two tracks 9 support the new pipe 8 to be installed. The outer diameter of pipe 8 is smaller than the inner diameter of the second culvert 12 (i.e., the old pipe), allowing pipe 8 to be inserted into the second culvert 12. With pipe 8 facing the second culvert 12, under the action of jacks 4, pipe 8 can move axially upwards on the two tracks 9, ultimately pushing pipe 8 into the second culvert 12. The two jacks 4 are directly opposite the pipe wall of pipe 8 (axially, the jacks are directly opposite the pipe wall of pipe 8), meaning the central axis of jacks 4 and the generatrix of pipe 8 are collinear. The force applied to pipe 8 during the jacking process acts on its pipe wall. Figure 5 As shown, this is to ensure the stability of the jacking of pipe 8.

[0029] Two slides 9 are provided with a jacking component 6 and a jacking pipe 7 in sequence between the jack 4 and the pipe 8. Both the jacking component 6 and the jacking pipe 7 are supported by the two slides 9. The diameter of the jacking pipe 7 is the same as that of the pipe 8. Several jacking pipes 7 are provided. Each time the jack 4 pushes the jacking component 6, it drives the jacking pipe 7 to move the pipe 8 towards the second culvert 12 by a set stroke distance, and then retracts. Each time the jack 4 push rod retracts, the jacking component 6 is lifted away from the position where it abuts with the jacking pipe 7 using a crane. Then, a new jacking pipe 7 is added between the existing jacking pipe 7 and the jacking component 6. At this time, the newly added jacking pipe is aligned with and abuts the previous jacking pipe. The jacking component 6 is then lifted again to be aligned with and abuts the newly added jacking pipe 7. The jack 4 push rod operates again by a stroke distance, and so on, until the jack 4 moves the pipe 8 a distance greater than or equal to the length of one pipe 8. Then, the next pipe 8 can be laid. Then, the new pipe 8 is welded to the previous pipe, and the pipe pushing operation is repeated, finally realizing the jacking operation of several pipes.

[0030] In this utility model, the jack 4, the jacking component 6, and the jacking pipe 7 work together. The jack 4 pushes the rod back and forth, and the added jacking pipe 7 acts as a jacking medium, causing the pipe 8 on the slide 9 to move towards the second culvert 12. This process is repeated until the construction of several new pipes is completed. At this point, the first pipe 8 passes through the second culvert 12, realizing the laying of new pipes in a limited space without full excavation.

[0031] In this utility model, the structure of the pusher 6 is as follows: Figure 3 As shown, it is a U-shaped frame structure with the U-shaped opening facing upwards. The width of the jacking component 6 is greater than the outer diameter of the jacking pipe 7, and the opening width of its U-shaped opening is smaller than the inner diameter of the jacking pipe 7, ensuring that the jacking component 6 can abut against the left and right ends of the jacking pipe 7 to ensure that the jacking operation can be carried out. Specifically, the jacking component 6 includes two U-shaped plates 61 arranged front and back facing each other, and a connecting plate 62 connecting the two U-shaped plates 61. The connecting plate 62 is located on the inner side of the edge of the U-shaped plate 61, and the two U-shaped plates 61 are connected by several stiffening plates 63 on the outer side of the connecting plate 62. This structure improves the strength of the jacking component 6 and reduces its weight, making it easier to hoist and move the jacking component 6, and also facilitating the jacking operation of the jack 4.

[0032] Two symmetrical positioning sleeves 64 are arranged on the left and right sides of the jack 4 facing the jack 6. The insertion port 641 of the positioning sleeve 64 is a conical insertion port to facilitate the insertion of the jack push rod. During jacking, the jack 4 push rod extends into the positioning sleeve 64 and abuts against the jack 6. The positioning sleeve 64 defines the relative position between the jack 6 and the two jacks 4, thereby defining the position of the jack 6 relative to the jack tube 7, so that the jack 6 is stable on the two slide rails 9.

[0033] The structure of the jacking tube 7 is as follows Figure 4 As shown, the outer circumferential surface of one end of the jacking pipe 7 is provided with an outer conical surface structure 71 corresponding to the conical socket of the pipe 8, and the inner circumferential surface of the other end of the jacking pipe 7 is provided with a conical socket structure 72 corresponding to the outer conical surface structure 71. This structure ensures that a socket structure is formed between the jacking pipe 7 and the pipe 8, and between two adjacent jacking pipes 7, thus guaranteeing the stability of the pipe jacking.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipe jacking device, characterized in that: The foundation pit (5) is used to disconnect the old pipes and form the first culvert (1) and the second culvert (12). The wall of the foundation pit (5) corresponding to the position of the first culvert (1) is the first wall (51). A wall (2) is set in front of the first culvert (1) in the foundation pit (5). The back of the wall (2) is close to the first wall (51). A jack (4) is set in front of the wall (2). The jack (4) is supported at the bottom of the foundation pit (5) by a bracket (10). Two slides (9) are symmetrically set on the left and right sides in the foundation pit (5). The two slides (9) are supported at the bottom of the foundation pit (5) by the bracket (10). The pipe (8) to be installed is supported by the two slides (9) and is facing the second culvert (12). It also includes a jacking component (6) and a jacking pipe (7) arranged sequentially between the jack (4) and the pipe (8). Both the jacking component (6) and the jacking pipe (7) are supported by two slides (9), wherein the diameter of the jacking pipe (7) is the same as that of the pipe (8). Several jacking pipes (7) are provided. Each time the jack (4) pushes the jacking component (6) and drives the jacking pipe (7) to move the pipe (8) one stroke distance in the direction of the second culvert (12), it retracts. Each time the jack (4) push rod retracts, a jacking pipe (7) is added between the existing jacking pipe (7) and the jacking component (6) before the next jacking operation is carried out, until the jacking distance of the pipe (8) is greater than or equal to the length of one pipe (8).

2. The pipe jacking device according to claim 1, characterized in that: The jacking component (6) is a U-shaped frame structure, which includes two U-shaped plates (61) arranged in front and behind, and a connecting plate (62) connecting the two U-shaped plates (61). The connecting plate (62) is located on the inner side of the edge of the U-shaped plate (61), and the two U-shaped plates (61) are connected by several stiffeners (63) on the outer side of the connecting plate (62).

3. The pipe jacking device according to claim 1, characterized in that: The jacking component (6) is equipped with a positioning sleeve (64) corresponding to the jack (4). When jacking, the jack (4) push rod extends into the positioning sleeve (64) and abuts against the jacking component (6).

4. A pipe jacking device according to claim 3, characterized in that: The insertion port (641) of the positioning sleeve (64) is a conical insertion port.

5. A pipe jacking device according to claim 1, characterized in that: Two jacks (4) are arranged symmetrically on the left and right. The two jacks (4) are arranged below and close to the center of the pipe (8), and the push rods of the two jacks (4) are directly opposite the pipe wall of the pipe (8) in the axial direction.

6. A pipe jacking device according to claim 1, characterized in that: The outer circumferential surface of one end of the pusher pipe (7) is provided with an outer conical surface structure (71) corresponding to the conical socket of the pipe (8), and the inner circumferential surface of the other end of the pusher pipe (7) is provided with a conical socket structure (72) corresponding to the outer conical surface structure (71).

7. A pipe jacking device according to claim 1, characterized in that: The wall (2) is a square steel box structure, which is filled with concrete, or the steel box is connected between its front and rear side walls by several connecting ribs.

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