Large-diameter PCCP (prestressed concrete cylinder pipe) drawing device

Abstract

The utility model discloses a large-diameter PCCP (prestressed concrete cylinder pipe) pipe drawing device which comprises a first hanging frame hung at the end of an installed pipe, a second hanging frame hung at the end of a pipe to be drawn out and a plurality of hydraulic jacks arranged between the first hanging frame and the second hanging frame, the first hanging frame comprises a plurality of first Z-shaped plates, and the second hanging frame comprises a plurality of second Z-shaped plates. The first hanging frame comprises a plurality of first Z-shaped plates which are connected into a whole through first arc-shaped connecting steel plates, and the second hanging frame comprises a plurality of second Z-shaped plates which are connected into a whole through second arc-shaped connecting steel plates. The pipeline pulling-out device is reasonable in structural design, wide in application range and convenient to recycle, the first hanging frame is hung at the end of an installed pipeline, the second hanging frame is hung at the end of a pipeline to be pulled out, the hydraulic jacks are arranged between the first hanging frame and the second hanging frame, and the pipeline to be pulled out is pulled out by starting the hydraulic jacks. The pipeline pulling-out device is convenient and fast to operate, and anti-corrosion materials on the surface of the pipeline cannot be damaged in the pipeline pulling-out process.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline installation and construction, and specifically relates to a large-diameter PCCP pipeline pipe puller. Background Art

[0002] The installation of large-diameter PCCP pipes is mainly through the socket connection. After the pipe socket is in place, the interface pressure test needs to be carried out to ensure the good sealing of the connection. Large-diameter pipes are heavy and difficult to install. During the installation process, the pressure test may fail. At this time, the pipe needs to be pulled out and checked for problems before reinstalling. The traditional method of pulling out the pipe is to use the crane boom to rotate and pull out the pipe. However, due to the heavy weight of the pipe, the process stability is difficult to control, and the pipe socket sealing rubber ring is often damaged, the steel socket is damaged, and the pipe anti-coating is damaged. Therefore, it is necessary to propose a large-diameter PCCP pipe puller to solve the above problems. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a large-diameter PCCP pipe puller in view of the deficiencies in the above-mentioned prior art. The utility model has a reasonable structural design, a wide range of applications, and is easy to use. A first hanger is hung at the end of the installed pipe, a second hanger is hung at the end of the pipe to be pulled out, and a plurality of hydraulic jacks are arranged between the first hanger and the second hanger. By starting the hydraulic jack, the pipe to be pulled out can be evenly and slowly pushed out by the hydraulic jack. The operation is convenient, and during the pipe pulling process, the end face of the pipe is always stressed, and the anti-corrosion material on the surface of the pipe will not be damaged.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a large-diameter PCCP pipe puller, characterized in that it includes a first hanger hung on the end of the installed pipe, a second hanger hung on the end of the pipe to be pulled out, and a plurality of hydraulic jacks arranged between the first hanger and the second hanger, wherein the hydraulic jacks are arranged along the axial direction of the installed pipe;

[0005] The first hanger comprises a plurality of first Z-shaped plates hung at the ends of the installed pipes and for the hydraulic jacks to be installed, the plurality of first Z-shaped plates being connected as a whole by a first arc-shaped connecting steel plate, and the first arc-shaped connecting steel plate being arranged closely against the outer wall of the installed pipes;

[0006] The second hanger includes a plurality of second Z-shaped plates hung on the end of the pipe to be pulled out and supported by the hydraulic jack. The plurality of second Z-shaped plates are connected as a whole by a second arc-shaped connecting steel plate, and the second arc-shaped connecting steel plate is arranged close to the outer wall of the pipe to be pulled out.

[0007] The above-mentioned large-diameter PCCP pipe puller is characterized in that: the first Z-shaped plate includes a first inner vertical plate, a first outer vertical plate and a first horizontal plate connected between the first inner vertical plate and the first outer vertical plate, the first inner vertical plate is arranged close to the end face of the installed pipe close to the end of the pipe to be pulled out, the first horizontal plate is arranged close to the outer wall of the installed pipe, and the first outer vertical plate is connected to the first arc-shaped connecting steel plate by bolts.

[0008] The above-mentioned large-diameter PCCP pipe puller is characterized in that: the second Z-shaped plate includes a second inner vertical plate, a second outer vertical plate and a second horizontal plate connected between the second inner vertical plate and the second outer vertical plate, the second inner vertical plate is arranged close to the end face of the pipe to be pulled out close to the installed pipe, the second horizontal plate is arranged close to the outer wall of the pipe to be pulled out, and the second outer vertical plate is connected to the second arc-shaped connecting steel plate by bolts.

[0009] The above-mentioned large-diameter PCCP pipe pulling device is characterized in that: the width of the first inner vertical plate is greater than the width of the first outer vertical plate, the width of the second inner vertical plate is greater than the width of the second outer vertical plate, and the widths of the first outer vertical plate, the first horizontal plate, the second outer vertical plate and the second horizontal plate are all equal.

[0010] The above-mentioned large-diameter PCCP pipe pulling device is characterized in that the cylinder of the hydraulic jack is fixed on the first outer vertical plate, and the head of the hydraulic jack is provided with a top plate for pressing against the second outer vertical plate.

[0011] The above-mentioned large-diameter PCCP pipe pulling device is characterized in that: two first stiffening plates are connected between the first Z-shaped plate and the first arc-shaped connecting steel plate, and the two first stiffening plates are symmetrically arranged on both sides of the hydraulic jack;

[0012] Two second stiffening plates are connected between the second Z-shaped plate and the second arc-shaped connecting steel plate, and the two second stiffening plates are symmetrically arranged on both sides of the hydraulic jack.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The utility model hangs a first hanger on the end of the installed pipe, hangs a second hanger on the end of the pipe to be pulled out, and sets a plurality of hydraulic jacks between the first hanger and the second hanger. By starting the hydraulic jack, the pipe to be pulled out can be evenly and slowly pushed out by the hydraulic jack, which is convenient to operate. During the pipe pulling process, the end face of the pipe is always stressed, and the anti-corrosion material on the surface of the pipe will not be damaged.

[0015] 2. The utility model is convenient for installation and disassembly by setting the first hanging bracket and the second hanging bracket. For pipes with different diameters, only the corresponding first arc-shaped connecting steel plate and the second arc-shaped connecting steel plate need to be replaced. The utility model has a wide range of applications and is convenient for turnover.

[0016] To sum up, the utility model has reasonable structural design, wide application range, and is easy to use. A first hanger is hung at the end of the installed pipe, a second hanger is hung at the end of the pipe to be pulled out, and multiple hydraulic jacks are arranged between the first hanger and the second hanger. By starting the hydraulic jack, the pipe to be pulled out can be evenly and slowly pushed out by the hydraulic jack. The operation is convenient, and during the pipe pulling process, the end face of the pipe is always subjected to force, and the anti-corrosion material on the surface of the pipe will not be damaged.

[0017] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the connection relationship between the first hanging bracket, the second hanging bracket and the hydraulic jack of the utility model.

[0020] Figure 3 for Figure 2 Top view of the .

[0021] Description of reference numerals:

[0022] 1—Installed pipe; 2—Pipeline to be pulled out; 3—Hydraulic jack;

[0023] 4—top plate; 5—first Z-shaped plate; 6—first arc-shaped connecting steel plate;

[0024] 7—second Z-shaped plate; 8—second arc-shaped connecting steel plate; 9—first stiffening plate;

[0025] 10—Second stiffening plate. DETAILED DESCRIPTION

[0026] like Figures 1 to 3 As shown, the utility model comprises a first hanger mounted on the end of the installed pipe 1, a second hanger mounted on the end of the pipe 2 to be pulled out, and a plurality of hydraulic jacks 3 arranged between the first hanger and the second hanger, wherein the hydraulic jacks 3 are arranged along the axial direction of the installed pipe 1;

[0027] The first hanger includes a plurality of first Z-shaped plates 5 hung at the end of the installed pipeline 1 and for the hydraulic jack 3 to be installed, and the plurality of first Z-shaped plates 5 are connected as a whole by a first arc-shaped connecting steel plate 6, and the first arc-shaped connecting steel plate 6 is arranged closely against the outer wall of the installed pipeline 1;

[0028] The second hanger includes a plurality of second Z-shaped plates 7 hung on the end of the pipe 2 to be pulled out and supported by the hydraulic jack 3. The plurality of second Z-shaped plates 7 are connected as a whole by a second arc-shaped connecting steel plate 8, and the second arc-shaped connecting steel plate 8 is arranged close to the outer wall of the pipe 2 to be pulled out.

[0029] In actual use, a first hanger is hung at the end of the installed pipe 1, a second hanger is hung at the end of the pipe 2 to be pulled out, and a plurality of hydraulic jacks 3 are arranged between the first hanger and the second hanger. By starting the hydraulic jacks 3, the pipe 2 to be pulled out can be evenly and slowly pushed out by the hydraulic jacks 3. The operation is convenient, and during the pipe pulling process, the end face of the pipe is always subjected to force, and the anti-corrosion material on the surface of the pipe will not be damaged.

[0030] It should be noted that by setting up the first hanging bracket and the second hanging bracket, the hanging method is convenient for installation and disassembly. For pipes of different diameters, it is only necessary to replace the corresponding first arc-shaped connecting steel plate 6 and the second arc-shaped connecting steel plate 8. It has a wide range of applications and is easy to use.

[0031] In this embodiment, the first Z-shaped plate 5 includes a first inner vertical plate, a first outer vertical plate and a first horizontal plate connected between the first inner vertical plate and the first outer vertical plate, the first inner vertical plate is arranged close to the end face of the installed pipe 1 close to the pipe 2 to be pulled out, the first horizontal plate is arranged close to the outer wall of the installed pipe 1, and the first outer vertical plate is connected to the first arc-shaped connecting steel plate 6 by bolts.

[0032] In actual use, the first Z-shaped plate 5 and the second Z-shaped plate 7 are both integrally die-casted from 12 mm thick steel plates.

[0033] In this embodiment, the second Z-shaped plate 7 includes a second inner vertical plate, a second outer vertical plate and a second horizontal plate connected between the second inner vertical plate and the second outer vertical plate. The second inner vertical plate is arranged close to the end face of the pipe 2 to be pulled out, close to the installed pipe 1, and the second horizontal plate is arranged close to the outer wall of the pipe 2 to be pulled out. The second outer vertical plate is connected to the second arc-shaped connecting steel plate 8 by bolts.

[0034] In this embodiment, the width of the first inner vertical plate is greater than that of the first outer vertical plate, the width of the second inner vertical plate is greater than that of the second outer vertical plate, and the widths of the first outer vertical plate, the first horizontal plate, the second outer vertical plate and the second horizontal plate are all equal.

[0035] In actual use, by widening both the first inner vertical plate and the second inner vertical plate, damage to the pipe body due to concentrated force during the pipe removal process can be effectively prevented.

[0036] In this embodiment, the cylinder of the hydraulic jack 3 is fixed on the first outer vertical plate, and the head of the hydraulic jack 3 is provided with a top plate 4 for pressing against the second outer vertical plate.

[0037] In actual use, the top plate 4 is made of a steel plate with a diameter of 200 mm and a thickness of 12 mm, and the top plate 4 is welded to the head of the hydraulic jack 3 .

[0038] In this embodiment, two first stiffening plates 9 are connected between the first Z-shaped plate 5 and the first arc-shaped connecting steel plate 6, and the two first stiffening plates 9 are symmetrically arranged on both sides of the hydraulic jack 3;

[0039] Two second stiffening plates 10 are connected between the second Z-shaped plate 7 and the second arc-shaped connecting steel plate 8 , and the two second stiffening plates 10 are symmetrically arranged on both sides of the hydraulic jack 3 .

[0040] In actual use, the first stiffening plate 9 and the second stiffening plate 10 are both made of isosceles right triangle steel plates with a waist length of 150 mm. The first stiffening plate 9 is welded to the first Z-shaped plate 5 and the first arc-shaped connecting steel plate 6, and the second stiffening plate 10 is welded to the second Z-shaped plate 7 and the second arc-shaped connecting steel plate 8.

[0041] During specific implementation, one right-angled side of the first stiffening plate 9 is welded to the first horizontal plate of the first Z-shaped plate 5, and the other right-angled side of the first stiffening plate 9 is welded to the first outer vertical plate of the first Z-shaped plate 5; one right-angled side of the second stiffening plate 10 is welded to the second horizontal plate of the second Z-shaped plate 7, and the other right-angled side of the second stiffening plate 10 is welded to the second outer vertical plate of the second Z-shaped plate 7.

[0042] When the utility model is actually used, firstly, the first arc-shaped connecting steel plate 6 and the second arc-shaped connecting steel plate 8 are processed and manufactured according to the diameter of the pipeline, and then a plurality of first Z-shaped plates 5 are connected to the first arc-shaped connecting steel plate 6 by bolts to form a first hanger, a hydraulic jack 3 is installed on the first outer vertical plate of each first Z-shaped plate 5, and a plurality of second Z-shaped plates 7 are connected to the second arc-shaped connecting steel plate 8 by bolts to form a second hanger, and a hydraulic jack 3 is installed on the second outer vertical plate of each second Z-shaped plate 7, and the first hanger and the second hanger are respectively hung on the end of the installed pipeline 1 and the end of the pipeline 2 to be pulled out, and the plurality of hydraulic jacks 3 are started until the pipeline 2 to be pulled out is evenly and slowly pushed out by the hydraulic jacks 3.

[0043] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A large diameter PCCP pipe extractor, characterized by: It comprises a first hanger hung on the end of an installed pipe (1), a second hanger hung on the end of a pipe (2) to be pulled out, and a plurality of hydraulic jacks (3) arranged between the first hanger and the second hanger, wherein the hydraulic jacks (3) are arranged along the axial direction of the installed pipe (1); The first hanger comprises a plurality of first Z-shaped plates (5) hung at the end of the installed pipeline (1) and for mounting the hydraulic jack (3), the plurality of first Z-shaped plates (5) being connected as a whole via a first arc-shaped connecting steel plate (6), the first arc-shaped connecting steel plate (6) being arranged closely against the outer wall of the installed pipeline (1); The second hanger comprises a plurality of second Z-shaped plates (7) hung on the end of the pipe (2) to be pulled out and supported by the hydraulic jack (3); the plurality of second Z-shaped plates (7) are connected as a whole via a second arc-shaped connecting steel plate (8); and the second arc-shaped connecting steel plate (8) is arranged in close contact with the outer wall of the pipe (2) to be pulled out.

2. A large diameter PCCP pipe extractor according to claim 1, characterized in that: The first Z-shaped plate (5) comprises a first inner vertical plate, a first outer vertical plate and a first horizontal plate connected between the first inner vertical plate and the first outer vertical plate, the first inner vertical plate being arranged close to an end surface of the installed pipe (1) close to the pipe (2) to be pulled out, the first horizontal plate being arranged close to the outer wall of the installed pipe (1), and the first outer vertical plate being connected to the first arc-shaped connecting steel plate (6) by bolts.

3. A large diameter PCCP pipe extractor according to claim 2, characterized in that: The second Z-shaped plate (7) comprises a second inner vertical plate, a second outer vertical plate and a second horizontal plate connected between the second inner vertical plate and the second outer vertical plate, the second inner vertical plate is arranged close to an end surface of the pipe to be pulled out (2) close to the installed pipe (1), the second horizontal plate is arranged close to the outer wall of the pipe to be pulled out (2), and the second outer vertical plate is connected to the second arc-shaped connecting steel plate (8) by bolts.

4. A large diameter PCCP pipe extractor according to claim 3, characterized in that: The width of the first inner vertical board is greater than that of the first outer vertical board, the width of the second inner vertical board is greater than that of the second outer vertical board, and the widths of the first outer vertical board, the first horizontal board, the second outer vertical board and the second horizontal board are all equal.

5. A large diameter PCCP pipe extractor according to claim 3, characterized in that: The cylinder body of the hydraulic jack (3) is fixed on the first outer vertical plate, and the head of the hydraulic jack (3) is provided with a top plate (4) for pressing against the second outer vertical plate.

6. A large diameter PCCP pipe extractor according to claim 1, characterized in that: Two first stiffening plates (9) are connected between the first Z-shaped plate (5) and the first arc-shaped connecting steel plate (6), and the two first stiffening plates (9) are symmetrically arranged on both sides of the hydraulic jack (3); Two second stiffening plates (10) are connected between the second Z-shaped plate (7) and the second arc-shaped connecting steel plate (8), and the two second stiffening plates (10) are symmetrically arranged on both sides of the hydraulic jack (3).

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