A pipe joint pulling and closing device

Abstract

The present invention discloses a pipe joint pulling and closing device, which belongs to the technical field of submarine immersed tube tunnel installation, and comprises a first support, a second support, a jack, a pulling assembly and a hydraulic cylinder, wherein the first support is fixedly installed on the movable pipe joint; the second support is fixedly installed on the fixed pipe joint; the jack is fixedly installed on the first support, and is used to apply axial tension to the first support, and the jack comprises a first piston rod; the pulling and closing assembly comprises a rotating pull rod and an abutment, one end of the rotating pull rod is rotatably connected to one end of the first piston rod through a hinge shaft, and the abutment is detachably arranged on the other end of the rotating pull rod, and when the rotating pull rod is passed through the second support, the abutment can abut against one end of the second support away from the first support; the hydraulic cylinder is rotatably and obliquely arranged on the first support, and one end of the hydraulic cylinder is a lifting end, and the lifting end is connected to the rotating pull rod. The pipe joint pulling and closing device is quick and simple to install and labor-saving to use.

Description

Technical Field

[0001] The invention relates to the technical field of submarine immersed tube tunnel installation, and in particular to a pipe joint pulling and closing device. Background Art

[0002] The subsea immersed tube tunnel is connected by several pipe sections. When two pipe sections are connected, a jack is used to pull the two pipe sections close to each other. When the end of the pipe section with the GINA waterstop 1001 is compressed, a preliminary fastening connection is achieved.

[0003] The existing pull-and-close system includes a first support and a second support, the first support is installed on the movable pipe section, the second support is installed on the fixed pipe section, the jack is installed on the first support, a pull-and-close connector is set at one end of the jack, and a hook member is provided on the second support, the pull-and-close connector and the hook member overlap each other, so that the jack is connected to the second support, and when the jack is working, the movable pipe section is pulled close to the fixed pipe section to achieve docking. The specific structure of the above-mentioned pull-and-close system is complex, and the connection operation of the pull-and-close connector and the hook member is complex and difficult. When pulling a heavy movable pipe section, the connection between the pull-and-close connector and the hook member may become loose or even separate from each other. Summary of the invention

[0004] The object of the present invention is to provide a pipe joint pulling and closing device to solve the problems of complex structure and complex connection operation of the existing pulling and closing system, and to conveniently and efficiently connect and fix the jack and the second support stably.

[0005] As conceived above, the technical solution adopted by the present invention is:

[0006] A pipe joint pulling and closing device, used for butting a movable pipe joint and a fixed pipe joint, comprises:

[0007] A first support, fixedly mounted on the movable pipe joint;

[0008] A second support, fixedly mounted on the fixed pipe section;

[0009] A jack, fixedly mounted on the first support, for applying an axial tension to the first support, comprising a first piston rod;

[0010] A pulling assembly, comprising a rotating pull rod and an abutment member, wherein one end of the rotating pull rod is rotatably connected to one end of the first piston rod through a hinge shaft, and the abutment member is detachably provided at the other end of the rotating pull rod, and when the rotating pull rod is passed through the second support, the abutment member can abut against one end of the second support away from the first support, so that one end of the first piston rod is fixed relative to the second support; and

[0011] The hydraulic cylinder is rotatably and obliquely arranged on the first support, one end of which is a lifting end, and the lifting end is connected to the rotating pull rod and is used to lift the rotating pull rod to rotate the rotating pull rod around the hinge shaft.

[0012] Optionally, the hydraulic cylinder includes a cylinder body and a second piston rod with one end movably inserted into the cylinder body, the first position of the cylinder body is hinged to the first support, and the other end of the second piston rod serves as the lifting end.

[0013] Optionally, the abutment member is sleeved and screwed onto the outside of the rotating pull rod.

[0014] Optionally, the abutment member includes an integrally formed sleeve and an abutment plate, the rotating pull rod is simultaneously passed through the sleeve and the abutment plate, the sleeve and the abutment plate are penetrated by a threaded channel, and one end of the rotating pull rod is provided with an external thread that cooperates with the threaded channel.

[0015] Optionally, the first support and the second support are detachably connected to the movable pipe section and the fixed pipe section, respectively.

[0016] Optionally, the first support and the second support both include a mounting frame, a fixing plate is welded to the movable pipe joint and the fixed pipe joint, and the mounting frame is connected to the fixing plate via a fastener.

[0017] Optionally, the mounting frame of the first support includes an upper top plate and side legs connected to both sides of the upper top plate, the hydraulic cylinder is hinged to the upper top plate through a hinge seat arranged on the upper top plate, a connecting plate is horizontally arranged between the two side legs, and the cylinder body of the jack is fixed to the connecting plate.

[0018] Optionally, an extension portion extending obliquely upward is provided on one side of the upper top plate, the extension portion is provided with a through hole, and the hydraulic cylinder is passed through the through hole.

[0019] Optionally, the rotating pull rod is rotatably connected to the lifting end via a hinge component.

[0020] Optionally, the bottom of the first support and the bottom of the second support are both detachably provided with wooden pads.

[0021] Beneficial effects of the present invention:

[0022] In the pipe joint pulling and closing device proposed in the present invention, the pulling and connecting combination can connect the jack with the second support, and the structure is simple and the installation is convenient; the rotating pull rod can be arranged around the first piston rod through the hinge shaft, and not only when the rotating pull rod is installed on the second support, the upper and lower positions of the rotating pull rod relative to the second support can be adjusted to better perform the installation, but also the rotating pull rod can be turned to a working state that is on the same horizontal line as the first piston rod or a storage state where the two are close to being perpendicular to each other, and the adjustment flexibility is good, and the use and storage are convenient. In addition, the rotating pull rod is used and matched with the first piston rod to meet the stiffness requirements while having low cost; the lifting end of the hydraulic cylinder is matched with the rotating pull rod, which avoids the operator manually pulling the bulky rotating pull rod, saves manpower, and reduces the difficulty of work; the rotating pull rod is screwed with the abutment, and the lifting end of the hydraulic cylinder can lift the rotating pull rod so that the abutment abuts against one side of the second support, and the screwing and abutting methods make the installation convenient and quick, and the connection is firm. The pipe joint pulling and closing device provided by the present invention is quick and simple to install and saves labor in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a top view of a pipe joint pulling and closing device provided in an embodiment of the present invention;

[0024] Figure 2 It is a front view of the pipe joint pulling and closing device provided in an embodiment of the present invention.

[0025] In the figure:

[0026] 100, movable pipe joint; 200, fixed pipe joint;

[0027] 1001, GINA water stop;

[0028] 1. First support; 2. Second support; 3. Jack; 5. Hydraulic cylinder;

[0029] 11. upper top plate; 12. side legs; 31. first piston rod; 41. rotating pull rod; 42. abutment member; 51. lifting end;

[0030] 111. Extension portion; 421. Sleeve; 422. Abutment plate. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0035] This embodiment provides a pipe joint pulling and closing device, such as Figure 1 and Figure 2 As shown, it is used for docking the movable pipe section 100 and the fixed pipe section 200, and includes a first support 1, a second support 2, a jack 3, a pulling assembly and a hydraulic cylinder 5, wherein the first support 1 is fixedly installed on the movable pipe section 100; the second support 2 is fixedly installed on the fixed pipe section 200, the jack 3 is fixedly installed on the first support 1, and is used to apply axial tension to the first support 1, and the jack 3 includes a first piston rod 31; the pulling assembly includes a rotating rod 41 and an abutment 42, and one end of the rotating rod 41 is rotatably connected to the first through a hinge shaft. At one end of the piston rod 31, the abutment 42 is detachably arranged at the other end of the rotating rod 41. When the rotating rod 41 is inserted into the second support 2, the abutment 42 can abut against the end of the second support 2 away from the first support 1, so that one end of the first piston rod 31 is fixed relative to the second support 2, so that the first support 1 can be pulled axially; the hydraulic cylinder 5 is rotatably and tiltably arranged on the first support 1, and one end of it is a lifting end 51, which is connected to the rotating rod 41 and is used to lift the rotating rod 41 so that the rotating rod 41 rotates around the hinge axis. In this embodiment, the jack 3 is preferably a telescopic beam jack, and the telescopic beam jack and the hydraulic cylinder 5 are both existing devices, and their structures and principles are not repeated here.

[0036] In the pipe joint pulling and closing device proposed in this embodiment, the pulling and connecting assembly can connect the jack 3 with the second support 2, so that when the jack 3 is working, the first piston rod 31 retracts, pulling the movable pipe joint 100 toward the fixed pipe joint 200 and making the two pipe joints close to each other. The pulling and connecting assembly has a simple structure and is easy to install.

[0037] The rotating rod 41 is rotatably connected to the first piston rod 31 through a hinge shaft, which not only makes it possible to conveniently adjust the upper and lower positions of the rotating rod 41 relative to the second support 2 for better penetration and installation when the rotating rod 41 is installed on the second support 2, but also allows the rotating rod 41 to be rotated to a working state that is on the same horizontal line as the first piston rod 31 or a storage state that is nearly perpendicular to the first piston rod 31, which has good adjustment flexibility and is easy to use and store. In addition, the use of the rotating rod 41 and its coordination with the first piston rod 31 can meet the rigidity requirements while having low manufacturing costs.

[0038] The lifting end 51 of the hydraulic cylinder 5 is connected to the rotating rod 41. According to the working conditions, by operating the hydraulic cylinder 5, the lifting end 51 can turn the rotating rod 41 to the working state or the storage state. Since the length and width of each pipe section of the deep-sea tunnel are very large, the length of the GINA belt can reach 130m. When the GINA belt needs to be compressed, at least 400 to 500 tons of pulling force is required. Therefore, the weight of the rotating rod 41 is very heavy, and it takes a huge external force to pull the rotating rod 4. The provision of the hydraulic cylinder 5 avoids the operator's manual The pull rod 41 is pulled by the user, which saves manpower and reduces the difficulty of work. In addition, the rotating pull rod 41 is extended after being inserted into the second support 2, and the extended end is screwed with the abutment 42. The hydraulic cylinder 5 is tiltedly arranged on the first support 1, and the rotating pull rod 41 is pulled by gradually retracting the lifting end 51 along its own axial direction, so that the abutment 42 gradually approaches and abuts against the end of the second support 2, so that one end of the jack 3 is relatively fixed with the second support 2, and the screw connection and abutment method make the installation convenient and fast, and the connection is firm. In summary, the pipe joint pulling and closing device is quick and easy to install and labor-saving to use.

[0039] Furthermore, the hydraulic cylinder 5 includes a cylinder body and a second piston rod with one end movably inserted into the cylinder body, the first position of the cylinder body is hinged to the first support 1, and the other end of the second piston rod serves as a lifting end 51. Through the hinged manner, the position of the hydraulic cylinder 5 can be adjusted in a small range in the vertical plane, and the adjustment is flexible and convenient.

[0040] In this embodiment, the abutment member 42 is sleeved and screwed on the outside of the rotating rod 41. The screw connection method is simple to install and has a firm connection. Specifically, the abutment member 42 includes an integrally formed sleeve 421 and an abutment plate 422, the rotating rod 41 is penetrated by the sleeve 421 and the abutment plate 422, the sleeve 421 and the abutment plate 422 are penetrated by a threaded channel, and one end of the rotating rod 41 is provided with an external thread that matches the threaded channel. The abutment plate 422 can abut against one side of the second support 2, thereby firmly fixing the end of the rotating rod 41 to the second support 2.

[0041] Optionally, the first support 1 and the second support 2 are detachably connected to the movable pipe section 100 and the fixed pipe section 200, respectively, which is not only convenient to disassemble, but also will not cause damage to the supports when the first support 1 and the second support 2 are disassembled, so that they can be recycled. Specifically, the first support 1 and the second support 2 both include a mounting frame, and a fixing plate is welded on the movable pipe section 100 and the fixed pipe section 200, and the mounting frame is connected to the fixing plate by a fastener. The fastener is preferably a bolt.

[0042] Furthermore, the mounting frame of the first support 1 includes an upper plate 11 and side legs 12 connected to both sides of the upper plate 11, the hydraulic cylinder 5 is hinged to the upper plate 11 through a hinge seat provided on the upper plate 11, a connecting plate is horizontally provided between the two side legs 12, and the cylinder body of the jack 3 is fixed to the connecting plate. The first support 1 has a simple structure and a stable structure.

[0043] Furthermore, an extension portion 111 extending obliquely upward is provided on one side of the upper top plate 11 , and a through hole is opened in the extension portion 111 , and the hydraulic cylinder 5 is passed through the through hole, and the through hole can limit the movement of the hydraulic cylinder 5 .

[0044] Optionally, the rotating rod 41 and the lifting end 51 are rotatably connected through a hinge component, so that the relative position between the hydraulic cylinder 5 and the rotating rod 41 can be more flexibly adjusted. In this embodiment, a pin seat is provided at one end of the rotating rod 41 close to the first piston rod 31, and a pin mounting hole is provided at the lifting end 51. The pin is penetrated through the pin seat and the pin mounting hole at the same time to hinge the rotating rod 41 with the lifting end 51.

[0045] In order to avoid wear on the bottom of the supports when the first support 1 and the second support 2 are carried and placed, wooden blocks are detachably provided on the bottom of the first support 1 and the second support 2.

[0046] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pipe joint pulling and closing device, used for butting a movable pipe joint (100) and a fixed pipe joint (200), characterized in that: include: A first support (1) fixedly mounted on the movable pipe joint (100); A second support (2) is fixedly mounted on the fixed pipe section (200); A jack (3) fixedly mounted on the first support (1) and used for applying an axial tension to the first support (1), comprising a first piston rod (31); A pulling assembly, comprising a rotating pull rod (41) and an abutment member (42), one end of the rotating pull rod (41) being rotatably connected to one end of the first piston rod (31) via a hinge shaft, and the abutment member (42) being detachably arranged on the other end of the rotating pull rod (41), and when the rotating pull rod (41) is inserted into the second support (2), the abutment member (42) can abut against one end of the second support (2) away from the first support (1), so that one end of the first piston rod (31) is fixed relative to the second support (2); and A hydraulic cylinder (5) is rotatably and tiltably disposed on the first support (1), one end of which is a lifting end (51), and the lifting end (51) is connected to the rotating pull rod (41) and is used to lift the rotating pull rod (41) so that the rotating pull rod (41) rotates around the hinge axis; The rotating pull rod (41) and the lifting end (51) are rotatably connected via a hinge component; The bottoms of the first support (1) and the second support (2) are both detachably provided with wooden pads.

2. The pipe joint pulling and closing device according to claim 1, characterized in that: The hydraulic cylinder (5) comprises a cylinder body and a second piston rod with one end movably inserted into the cylinder body; the first position of the cylinder body is hinged to the first support (1), and the other end of the second piston rod serves as the lifting end (51).

3. The pipe joint pulling and closing device according to claim 1, characterized in that: The abutment member (42) is sleeved and threadedly connected to the outside of the rotating pull rod (41).

4. The pipe joint pulling and closing device according to claim 3, characterized in that: The abutment member (42) includes an integrally formed sleeve (421) and an abutment plate (422); the rotating pull rod (41) is simultaneously passed through the sleeve (421) and the abutment plate (422); a threaded channel is passed through the sleeve (421) and the abutment plate (422); one end of the rotating pull rod (41) is provided with an external thread that matches the threaded channel.

5. The pipe joint pulling and closing device according to claim 1, characterized in that: The first support (1) and the second support (2) are detachably connected to the movable pipe section (100) and the fixed pipe section (200), respectively.

6. The pipe joint pulling and closing device according to any one of claims 1 to 5, characterized in that: The first support (1) and the second support (2) both comprise a mounting frame, a fixing plate is welded to the movable pipe section (100) and the fixed pipe section (200), and the mounting frame is connected to the fixing plate via a fastener.

7. The pipe joint pulling and closing device according to claim 6, characterized in that: The mounting frame of the first support (1) comprises an upper top plate (11) and side legs (12) connected to both sides of the upper top plate (11); the hydraulic cylinder (5) is hinged to the upper top plate (11) via a hinge seat provided on the upper top plate (11); a connecting plate is horizontally provided between the two side legs (12); and the cylinder body of the jack (3) is fixedly mounted on the connecting plate.

8. The pipe joint pulling and closing device according to claim 7, characterized in that: An extension portion (111) extending obliquely upward is provided on one side of the upper top plate (11), the extension portion (111) being provided with a through hole, and the hydraulic cylinder (5) is passed through the through hole.

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