Construction device and construction method for hoisting rectangular pipe joints in pipe gallery foundation pit

Abstract

The invention relates to the field of municipal engineering construction, in particular to a construction device and method for hoisting a rectangular pipe joint in a pipe gallery foundation pit, and the construction device for hoisting the rectangular pipe joint in the pipe gallery foundation pit comprises a lifting hook of a crawler crane, a hoisting beam and a plurality of hoisting ropes; each hoisting rope is fixedly connected with a hoisting hook of the crawler crane, the hoisting beam is fixedly connected with the pipe joint, a connecting device is arranged between each hoisting rope and the hoisting beam and used for adjusting the position of the hoisting rope on the hoisting beam, and the hoisting hook of the crawler crane transports the pipe joint to move in a foundation pit through the hoisting rope and the hoisting beam; the connecting device comprises a connecting ring and a connecting hole, the connecting hole comprises an edge hole and a middle hole, the edge hole and the middle hole are both formed in the hoisting beam, the hoisting rope is detachably and fixedly connected with the edge hole and the middle hole through the connecting ring, the position of the pipe joint can be rapidly adjusted, and therefore the pipe joint is installed. The effects of improving the construction efficiency and shortening the construction period of the pipe gallery are achieved.

Description

Technical Field

[0001] The present application relates to the field of municipal engineering construction, and in particular to a construction device and a construction method for hoisting rectangular pipe sections in a pipe gallery foundation pit. Background Art

[0002] At present, with the continuous advancement of urbanization, the application of underground pipe corridors in urban municipal construction is increasingly favored by urban planners and designers. Pipe corridor construction includes open-cut cast-in-place method, open-cut prefabrication method, shallow buried dark excavation method, shield method, etc., which are suitable for the corresponding construction environment and have their own advantages and disadvantages. Among them, the open-cut prefabrication method is an advanced technology that has emerged in recent years, which can greatly speed up the construction progress and reduce construction investment.

[0003] The existing open-cut prefabrication method is to install prefabricated pipe segments in deep foundation pits. After the deep foundation pits are excavated, support structures are required to prevent the pits from collapsing. The support structures are often equipped with cross braces for support. Therefore, when installing pipe segments in the foundation pits, the cross braces affect the lifting ropes, so the pipe segments cannot be directly lifted to the designed position. A winch is required to pull the pipe segments to the designed position.

[0004] The above-mentioned prior art solutions have the following defects: due to the influence of the cross brace, the construction efficiency of using a winch to pull the pipe segment is low, resulting in a long overall construction period of the pipeline corridor. Summary of the invention

[0005] In order to improve construction efficiency and shorten the construction period of a pipe gallery, the present application provides a construction device and a construction method for hoisting rectangular pipe sections in a foundation pit of a pipe gallery.

[0006] The above technical objectives of this application are achieved through the following technical solutions:

[0007] In a first aspect, the present application provides a construction device for hoisting a rectangular pipe section in a pipe gallery foundation pit, comprising a hook of a crawler crane, a hoisting beam and a hoisting rope, wherein a plurality of hoisting ropes are provided, each hoisting rope is fixedly connected to the hook of the crawler crane, the hoisting beam is fixedly connected to the pipe section, a connecting device is provided between each hoisting rope and the hoisting beam, the connecting device is used to adjust the position of the hoisting rope on the hoisting beam, and the hook of the crawler crane transports the pipe section through the hoisting rope and the hoisting beam and moves in the foundation pit;

[0008] The connecting device comprises a connecting ring and a connecting hole, wherein the connecting hole comprises an edge hole and a middle hole, both the edge hole and the middle hole are arranged on the lifting beam, and the lifting rope is detachably and fixedly connected with the edge hole and the middle hole through the connecting ring.

[0009] By adopting the above scheme, the lifting beam is first fixedly connected to the pipe segment, and then the hook of the crawler crane is moved to the top of the lifting beam, and the two ends of the lifting rope are respectively fixedly connected to the connecting ring and the hook of the crawler crane, and the connecting ring is fixedly connected to the edge hole of the lifting beam. Then the crawler crane is started to drive the pipe segment to be slowly placed in the foundation pit through the hook, the lifting rope and the lifting beam, and then the pipe segment is moved in the foundation pit toward the direction of the installed pipe segment to ensure that the lifting rope does not collide with the cross brace during the movement. When the lifting rope is close to the cross brace to the maximum extent, the connecting ring is separated from the edge hole and then the connecting ring is connected. The ring is connected and fixed to the middle hole, and then the crawler crane is used to continue to lift the pipe segment and move it in the foundation pit, so that the lifting rope continues to approach the cross brace. When the lifting rope approaches the cross brace again, the edge hole of the lifting beam has passed through the cross brace from under the cross brace, and then the pipe segment is dropped into the foundation pit, the connecting ring is separated from the middle hole and then fixedly connected to the edge hole. At this time, the cross brace is located between the two lifting ropes, which can make the pipe segment move laterally in the foundation pit to the maximum extent, and the position of the pipe segment can be adjusted quickly, thereby completing the installation of the pipe segment, achieving the purpose of improving construction efficiency and shortening the construction period of the pipe gallery.

[0010] Furthermore, an abutment plate is fixedly connected to one side of the hoisting beam close to the pipe segment.

[0011] Furthermore, baffles are fixedly connected to both ends of the lifting beam.

[0012] Furthermore, a plurality of stiffening plates are arranged between the abutment plate and the hoisting beam, and two sides of the stiffening plates are fixedly connected to the abutment plate and the hoisting beam respectively.

[0013] By adopting the above solution and providing abutment plates, baffles and stiffening plates, the bending resistance of the hoisting beam is improved, thereby ensuring the stability of the hoisting beam during use.

[0014] Furthermore, an installation device is arranged between the abutment plate and the pipe section, and the installation device includes a mounting bolt, a mounting ring, a mounting plate and a mounting pin. A mounting hole is opened on the abutment plate, and a mounting groove is opened on the lifting beam. The mounting groove is connected with the mounting hole, and the mounting bolt is fixedly connected with the pipe section. The mounting ring is fixedly connected with the mounting plate and the mounting bolt respectively. The mounting plate passes through the mounting hole and is plugged into the mounting groove. A through hole is opened on the mounting plate, and the mounting pin is plugged into the through hole. The mounting pin is used to fix the mounting plate in the mounting groove.

[0015] By adopting the above scheme, when installing the lifting beam and the pipe section, first connect and fix the mounting bolts to the pipe section, then move the lifting beam to the top of the pipe section, align the mounting hole of the lifting beam with the mounting plate, pass the mounting plate of the lifting beam through the mounting ring and plug it into the mounting groove, and when the abutment plate abuts against the pipe section, move the mounting pin through the through hole on the mounting plate to fix the mounting plate in the mounting groove, thereby completing the installation of the lifting beam and the pipe section.

[0016] Furthermore, two lifting ropes are provided, and the two lifting ropes are fixedly connected to the edge holes on the lifting beam through a connecting ring.

[0017] Furthermore, it also includes an auxiliary rope, one end of which is fixedly connected to the middle hole of the lifting beam through a connecting device, and the other end of the auxiliary rope is fixedly connected to the hook of the crawler crane. The auxiliary rope is used to temporarily replace the lifting rope to bear the load of the pipe section.

[0018] By adopting the above scheme, two lifting ropes are provided to be connected and fixed to the edge holes respectively, and then the two ends of the auxiliary rope are provided to be fixed to the middle holes of the lifting hook and the lifting beam respectively. When the lifting rope is about to abut against the cross brace, the lifting rope and the lifting beam are separated by the connecting ring, so that the auxiliary rope bears the load borne by the lifting rope, and then the pipe section is driven to continue to move in the foundation pit by the crawler hoist, so that when the auxiliary rope approaches the cross brace, the edge hole of the lifting beam has passed through the cross brace from under the cross brace. At this time, the connecting ring on the lifting rope is connected and fixed to the lifting beam, and the connection between the auxiliary rope and the lifting beam is loosened by the connecting ring. At this time, the cross brace is located between the two lifting ropes, so that the pipe section can move laterally in the foundation pit to the maximum extent, and the adjustment of the position of the pipe section can be completed quickly, thereby completing the installation of the pipe section, so that the construction device can prevent the pipe section from falling to the ground during the installation of the pipe section, thereby further improving the installation efficiency of the pipe section.

[0019] Furthermore, the auxiliary rope includes a first section, a second section and a tensioning device, one end of the first section is fixedly connected to the hook of the crawler crane, and the other end is fixedly connected to the tensioning device, one end of the second section is fixedly connected to the lifting beam, and the other end is fixedly connected to the tensioning device, and the tensioning device is used to tighten the second section to bear the load of the pipe section.

[0020] By adopting the above scheme, the tensioning device is fixedly connected to the hook through the first section, and the tensioning device is fixedly connected to the lifting beam through the second section. The position of the second section relative to the first section is adjusted by the tensioning device, so that the second section is used to replace the lifting rope to bear the load of the pipe section, so that the lifting rope does not bear the load, which facilitates the separation of the connecting ring on the lifting rope from the lifting beam; then when it is necessary to separate the auxiliary rope from the lifting beam, the tensioning device adjusts the second section, so that the second section does not bear the load of the pipe section, which facilitates the separation of the connecting ring on the auxiliary rope from the lifting beam.

[0021] Further, the tensioning device includes a fixed frame, a telescopic member and a lifting plate, the first section is fixedly connected to the fixed frame, the lifting plate and the telescopic member are arranged in the fixed frame, the lifting plate is fixedly connected to the second section, the two ends of the telescopic member are respectively fixedly connected to the fixed frame and the lifting plate, and the telescopic member is used to drive the lifting plate to slide in the fixed frame.

[0022] By adopting the above scheme, when using the tensioning device, the telescopic part is started to drive the lifting plate to rise or fall, so that the lifting plate drives one end of the second section to rise or fall with the lifting plate in the fixed frame, thereby adjusting whether the second section bears the load force, thereby realizing the separation of the connecting ring of the auxiliary rope and the lifting rope from the lifting beam.

[0023] In a second aspect, the present application provides a construction method for hoisting a rectangular pipe section in a pipe gallery foundation pit, comprising the following steps:

[0024] S1. Processing the hoisting beam: determine the positions of the installation holes and installation grooves according to the size of the pipe segment, open the installation holes on the abutment plate and the installation grooves on the hoisting beam, fix the abutment plate and the hoisting beam together, weld the baffles at both ends of the hoisting beam, weld the stiffening plate between the hoisting beam and the abutment plate, and complete the processing of the hoisting beam;

[0025] S2. Install the hoisting beam: first, fix the mounting bolts to the prefabricated pipe section, then fix one end of the hoisting rope to the hook of the crawler crane, and the other end to the edge hole of the hoisting beam, then move the hoisting beam to the top of the mounting plate, so that the mounting plate passes through the mounting hole and the mounting groove, and then pass the mounting pin through the through hole on the mounting plate to fix the mounting plate to the hoisting beam;

[0026] S3. Lift the pipe segment to the foundation pit: Start the hook of the crawler crane to drive the pipe segment to drop uniformly from between the two cross braces to the bottom of the foundation pit through the lifting beam;

[0027] S4. Move the connection position of the lifting rope for the first time: separate the connection ring on the lifting rope from the edge hole, and then connect and fix the connection ring to the middle hole;

[0028] S5. Move the pipe segment for the first time: Use the hook of the crawler crane to drive the pipe segment to move in the foundation pit towards the installed pipe segment, ensuring that the lifting rope does not collide with the cross brace during the movement. When the lifting rope is very close to the cross brace and is about to collide, use the hook of the crawler crane to slowly lower the pipe segment to the bottom of the foundation pit;

[0029] S6. Move the connection position of the lifting rope for the second time: separate the connection ring on the lifting rope from the middle hole, and then connect and fix the connection ring to the edge hole so that the cross brace is located between the two lifting ropes;

[0030] S7. Move the pipe segment for the second time: Use the hook of the crawler crane to drive the pipe segment to move in the foundation pit toward the installed pipe segment, ensuring that the lifting rope does not collide with the cross brace during the movement, so that the pipe segment can move horizontally in the foundation pit to the maximum extent, and the pipe segment is not affected by the cross brace within a certain distance during the lifting process, so that the position of the pipe segment can be adjusted quickly, thereby completing the installation of the pipe segment.

[0031] In summary, this application has the following technical effects:

[0032] 1. By setting up a lifting beam, a lifting rope and a connecting device, the two ends of the lifting rope are fixedly connected to the connecting ring and the hook of the crawler crane respectively, the connecting ring is fixedly connected to the edge hole of the lifting beam, the crawler crane is started to drive the pipe segment to be slowly placed in the foundation pit, and the mobile pipe segment moves in the foundation pit toward the installed pipe segment to ensure that the lifting rope does not collide with the cross brace during the movement. When the lifting rope is close to the cross brace to the maximum extent, the connecting ring is separated from the edge hole and then the connecting ring is connected and fixed to the middle hole. The crawler crane continues to lift the pipe segment and move it in the foundation pit, so that the lifting rope continues to approach the cross brace. When the lifting rope approaches the cross brace again, the edge hole of the lifting beam has passed through the cross brace from the bottom of the cross brace, and the pipe segment falls into the foundation pit. The connecting ring is separated from the middle hole and then fixedly connected to the edge hole. At this time, the cross brace is located between the two lifting ropes, so that the pipe segment can move horizontally in the foundation pit to the maximum extent, and the adjustment of the pipe segment position can be completed quickly, thereby completing the installation of the pipe segment, achieving the purpose of improving construction efficiency and shortening the construction period of the pipe gallery;

[0033] 2. By setting up the installation device, connect and fix the installation bolts with the pipe section, then move the lifting beam to the top of the pipe section, align the installation hole of the lifting beam with the installation plate, pass the installation plate of the lifting beam through the installation ring and plug it into the installation groove, and when the abutment plate abuts against the pipe section, move the installation pin through the through hole on the installation plate to fix the installation plate in the installation groove, and complete the quick installation of the lifting beam and the pipe section;

[0034] 3. By setting up an auxiliary rope, when the lifting rope is about to abut against the cross brace, the lifting rope and the lifting beam are separated through the connecting ring, so that the auxiliary rope bears the load borne by the lifting rope, and then the pipe segment is driven to continue to move in the foundation pit through the crawler hoist, so that when the auxiliary rope approaches the cross brace, the edge hole of the lifting beam has passed through the cross brace from under the cross brace. At this time, the connecting ring on the lifting rope is connected and fixed to the lifting beam, and the connection between the auxiliary rope and the lifting beam is loosened through the connecting ring, so that the construction device can prevent the pipe segment from falling to the ground during the installation of the pipe segment, thereby further improving the installation efficiency of the pipe segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of a construction device for hoisting rectangular pipe sections in a foundation pit of a pipe gallery in Example 1 of the present application;

[0036] Figure 2 It is a structural schematic diagram of the connection between the hoisting beam of the present application and the pipe segment through the installation device;

[0037] Figure 3 It is a schematic diagram of the structure of the installation device of the present application;

[0038] Figure 4 It is a schematic diagram showing the structure of the connection between the lifting rope and the edge hole;

[0039] Figure 5 It is a schematic diagram showing the structure of the fixed connection between the lifting rope and the middle hole;

[0040] Figure 6 It is a schematic diagram of the structure in which the lifting rope is fixedly connected to the edge hole again;

[0041] Figure 7 It is a schematic diagram of the structure in which an auxiliary rope is provided in the second embodiment of the present application;

[0042] Figure 8 This is a schematic diagram of the cross brace in the second embodiment passing through the lifting rope and being located between the auxiliary rope and the lifting rope.

[0043] In the figure, 1. hook; 2. lifting beam; 21. mounting groove; 3. lifting rope; 4. connecting device; 41. connecting ring; 42. connecting hole; 421. middle hole; 422. edge hole; 5. abutment plate; 51. mounting hole; 6. baffle; 7. stiffening plate; 8. mounting device; 81. mounting bolt; 82. mounting ring; 83. mounting plate; 84. mounting pin; 9. auxiliary rope; 91. first section; 92. second section; 93. tensioning device; 931. fixing frame; 932. telescopic member; 933. lifting plate; 10. pipe section; 20. foundation pit; 30. cross brace. DETAILED DESCRIPTION

[0044] The present application is further described in detail below in conjunction with the accompanying drawings.

[0045] Embodiment 1

[0046] Reference Figure 1 and Figure 2 The present embodiment provides a construction device for hoisting a rectangular pipe section in a pipe gallery foundation pit, comprising a hook 1 of a crawler crane, a hoisting beam 2 and a hoisting rope 3. A plurality of hoisting ropes 3 are provided. In the present embodiment, two hoisting ropes 3 are provided. The hoisting ropes 3 are preferably steel wire ropes. Each hoisting rope 3 is fixedly connected to the hook 1 of the crawler crane. The hoisting beam 2 is fixedly connected to the pipe section 10. A connecting device 4 is provided between each hoisting rope 3 and the hoisting beam 2. The connecting device 4 is used to adjust the position of the hoisting rope 3 on the hoisting beam 2. The hook of the crawler crane The pipe segment 10 is transported and moved in the foundation pit 20 through the lifting rope 3 and the lifting beam 2; the connecting device 4 includes a connecting ring 41 and a connecting hole 42. In this embodiment, the connecting ring 41 is preferably a U-shaped lifting ring. The connecting hole 42 includes an edge hole 422 and a middle hole 421. A plurality of edge holes 422 and a plurality of middle holes 421 are provided. All edge holes 422 and all middle holes 421 are opened on the lifting beam 2. The lifting rope 3 is detachably and fixedly connected with the edge hole 422 and the middle hole 421 through the connecting ring 41.

[0047] Reference Figure 2 and Figure 3A side of the lifting beam 2 close to the pipe section 10 is fixedly connected with an abutment plate 5; both ends of the lifting beam 2 are fixedly connected with baffles 6; a plurality of stiffening plates 7 are arranged between the abutment plate 5 and the lifting beam 2, and the two sides of the stiffening plate 7 are fixedly connected with the abutment plate 5 and the lifting beam 2 respectively.

[0048] Reference Figure 2 and Figure 3 A mounting device 8 is provided between the abutment plate 5 and the pipe section 10, and the mounting device 8 includes a mounting bolt 81, a mounting ring 82, a mounting plate 83 and a mounting pin 84. A mounting hole 51 is provided on the abutment plate 5, and two mounting holes 51 are provided. A mounting groove 21 is provided on the lifting beam 2, and the mounting groove 21 is provided corresponding to the mounting hole 51. The mounting groove 21 is communicated with the mounting hole 51. The mounting bolt 81 is fixedly connected to the pipe section 10, and the mounting ring 82 is fixedly connected to the mounting plate 83 and the mounting bolt 81 respectively. The mounting plate 83 passes through the mounting hole 51 and is plugged into the mounting groove 21. A through hole is provided on the mounting plate 83, and the mounting pin 84 is plugged into the through hole. The mounting pin 84 is used to fix the mounting plate 83 in the mounting groove 21.

[0049] The implementation principle of a construction device for hoisting rectangular pipe sections in a tunnel foundation pit according to an embodiment of the present application is as follows: when using the construction device to install the pipe section 10 in the foundation pit 20, first move the mounting bolt 81 to fix the connection with the pipe section 10, then move the hoisting beam 2 to the top of the pipe section 10, align the mounting hole 51 of the hoisting beam 2 with the mounting plate 83, pass the mounting plate 83 of the hoisting beam 2 through the mounting ring 82 and plug it into the mounting groove 21, and when the abutment plate 5 abuts against the pipe section 10, move the mounting pin 84 through the through hole on the mounting plate 83, so that the mounting plate 83 is fixed in the mounting groove 21, and the installation of the hoisting beam 2 and the pipe section 10 is completed.

[0050] The two ends of the lifting rope 3 are fixedly connected to the connecting ring 41 and the hook 1 of the crawler crane respectively, and the connecting ring 41 is fixedly connected to the edge hole 422 of the lifting beam 2. Then, the crawler crane is started to drive the pipe section 10 to be slowly placed in the foundation pit 20 through the hook 1, the lifting rope 3 and the lifting beam 2. Then, the pipe section 10 is moved in the foundation pit 20 toward the direction of the installed pipe section 10 to ensure that the lifting rope 3 does not collide with the cross brace 30 during the movement. When the lifting rope 3 is as close to the cross brace 30 as possible, the connecting ring 41 is separated from the edge hole 422 and then the connecting ring 41 is fixedly connected to the middle hole 421. Then, the crawler crane is used to continue lifting the pipe. The section 10 moves in the foundation pit 20, so that the lifting rope 3 continues to approach the cross brace 30. When the lifting rope 3 approaches the cross brace 30 again, the edge hole 422 of the lifting beam 2 has passed through the cross brace 30 from below the cross brace 30. Then the pipe section 10 is dropped into the foundation pit 20, and the connecting ring 41 is separated from the middle hole 421 and then fixedly connected to the edge hole 422. At this time, the cross brace 30 is located between the two lifting ropes 3, which can make the pipe section 10 move laterally in the foundation pit 20 to the maximum extent. The position of the pipe section 10 can be adjusted quickly, thereby completing the installation of the pipe section 10, achieving the purpose of improving construction efficiency and shortening the construction period of the pipeline corridor.

[0051] Reference Figure 1-Figure 6 A construction method for hoisting a rectangular pipe section in a pipe gallery foundation pit comprises the following steps:

[0052] S1. Processing the hoisting beam 2: Determine the positions of the mounting hole 51 and the mounting groove 21 according to the size of the pipe segment 10, open the mounting hole 51 on the abutment plate 5, open the mounting groove 21 on the hoisting beam 2, fix the abutment plate 5 to the hoisting beam 2, and then weld the baffles 6 at both ends of the hoisting beam 2, and weld the stiffening plate 7 between the hoisting beam 2 and the abutment plate 5, and complete the processing of the hoisting beam 2;

[0053] S2. Install the hoisting beam 2: first, fix the mounting bolt 81 to the prefabricated pipe section 10, and then fix one end of the hoisting rope 3 to the hook 1 of the crawler crane, and the other end to the edge hole 422 of the hoisting beam 2, and then move the hoisting beam 2 to the top of the mounting plate 83, so that the mounting plate 83 passes through the mounting hole 51 and the mounting groove 21, and then pass the mounting pin 84 through the through hole on the mounting plate 83, so that the mounting plate 83 is fixed to the hoisting beam 2;

[0054] S3, hoisting the pipe segment 10 to the foundation pit 20: starting the hook 1 of the crawler crane to drive the pipe segment 10 to descend at a uniform speed from between the two cross braces 30 to the bottom of the foundation pit 20 through the hoisting beam 2;

[0055] S4, moving the connection position of the lifting rope 3 for the first time: after separating the connection ring 41 on the lifting rope 3 from the edge hole 422, the connection ring 41 is connected and fixed to the middle hole 421;

[0056] S5, moving the pipe segment 10 for the first time: using the hook 1 of the crawler crane to drive the pipe segment 10 to move in the foundation pit 20 towards the installed pipe segment 10, ensuring that the lifting rope 3 does not collide with the cross brace 30 during the movement. When the lifting rope 3 is very close to the cross brace 30 and is about to collide, use the hook 1 of the crawler crane to slowly lower the pipe segment 10 to the bottom of the foundation pit 20;

[0057] S6, moving the connection position of the lifting rope 3 for the second time: after separating the connection ring 41 on the lifting rope 3 from the middle hole 421, the connection ring 41 is connected and fixed to the edge hole 422, so that the cross brace 30 is located between the two lifting ropes 3;

[0058] S7. Move the pipe segment 10 for the second time: Use the hook 1 of the crawler crane to drive the pipe segment 10 to move in the foundation pit 20 toward the installed pipe segment 10, ensuring that the lifting rope 3 does not collide with the cross brace 30 during the movement, so that the pipe segment 10 can move horizontally in the foundation pit 20 to the maximum extent, so that the pipe segment 10 is not affected by the cross brace 30 within a certain distance during the lifting process, and the position of the pipe segment 10 can be adjusted quickly, thereby completing the installation of the pipe segment 10.

[0059] Embodiment 2

[0060] Reference Figure 7 and Figure 8 The difference between Example 2 of the present application and Example 1 is that: in this embodiment, two lifting ropes 3 are provided, and the two lifting ropes 3 are fixedly connected to the edge hole 422 on the lifting beam 2 through a connecting ring 41, and two auxiliary ropes 9 are also provided between the two lifting ropes 3. In this embodiment, the auxiliary rope 9 is preferably a steel wire rope, one end of the auxiliary rope 9 is fixedly connected to the middle hole 421 of the lifting beam 2 through a connecting device 4, and the other end of the auxiliary rope 9 is fixedly connected to the hook 1 of the crawler crane, and the auxiliary rope 9 is used to temporarily replace the lifting rope 3 to bear the load of the pipe segment 10.

[0061] The auxiliary rope 9 includes a first section 91, a second section 92 and a tensioning device 93. One end of the first section 91 is fixedly connected to the hook 1 of the crawler crane, and the other end is fixedly connected to the tensioning device 93. One end of the second section 92 is fixedly connected to the lifting beam 2, and the other end is fixedly connected to the tensioning device 93. The tensioning device 93 is used to tighten the second section 92 to bear the load of the pipe section 10.

[0062] The tensioning device 93 includes a fixed frame 931, a telescopic member 932 and a lifting plate 933. The first section 91 is fixedly connected to the fixed frame 931. The lifting plate 933 and the telescopic member 932 are arranged in the fixed frame 931. The lifting plate 933 is fixedly connected to the second section 92. The two ends of the telescopic member 932 are respectively fixedly connected to the fixed frame 931 and the lifting plate 933. The telescopic member 932 is used to drive the lifting plate 933 to slide in the fixed frame 931.

[0063] The connection ring 41 in this embodiment is preferably a remote-controlled hook 1 that can be automatically unhooked, so as to achieve remote control connection and separation of the connection ring 41 and the lifting beam 2.

[0064] When the construction device of this embodiment is used, the two lifting ropes 3 are respectively connected and fixed to the two edge holes 422 on the lifting beam 2, and then the two ends of the two auxiliary ropes 9 are respectively fixed to the hook 1 and the middle hole 421 of the lifting beam 2, and the pipe section 10 is lifted into the foundation pit 20 by the crawler crane. The pipe section 10 is moved in the foundation pit 20. When the lifting rope 3 is about to abut against the cross brace 30, the telescopic member 932 is started to drive the lifting plate 933 to rise in the fixing frame 931. The lifting plate 933 drives the second section 92 to be tightened, and the second section 92 gradually bears the load of the pipe section 10, so that the auxiliary rope 9 bears the load of the pipe section 10 borne by the lifting rope 3, and then the lifting rope 3 and the lifting beam 2 are separated through the connecting ring 41; then the pipe section 10 is driven to continue to move in the foundation pit 20 by the crawler crane. When the auxiliary rope 9 is close to the cross brace When the cross brace 30 is supported, the edge hole 422 of the lifting beam 2 has passed through the cross brace 30 from the bottom of the cross brace 30. At this time, the connecting ring 41 on the lifting rope 3 is connected and fixed to the lifting beam 2, and the telescopic member 932 is started to drive the lifting plate 933 to descend in the fixed frame 931. The lifting plate 933 drives the second section 92 to become loose, and the second section 92 gradually no longer bears the load of the pipe segment 10, so that the lifting rope 3 bears the load of the pipe segment 10, and then the connection between the auxiliary rope 9 and the lifting beam 2 is loosened through the connecting ring 41. At this time, the cross brace 30 is located between the two lifting ropes 3, which can make the pipe segment 10 move laterally in the foundation pit 20 to the maximum extent, and the position of the pipe segment 10 can be adjusted quickly, thereby completing the installation of the pipe segment 10, so that the construction device can prevent the pipe segment 10 from falling to the ground during the installation of the pipe segment 10, thereby further improving the installation efficiency of the pipe segment.

[0065] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A construction device for hoisting rectangular pipe sections in a pipe gallery foundation pit, characterized in that: The invention comprises a hook (1) of a crawler crane, a lifting beam (2) and a lifting rope (3), wherein a plurality of lifting ropes (3) are provided, each lifting rope (3) is fixedly connected to the hook (1) of the crawler crane, the lifting beam (2) is fixedly connected to a pipe section (10), a connecting device (4) is provided between each lifting rope (3) and the lifting beam (2), and the connecting device (4) is used to adjust the position of the lifting rope (3) on the lifting beam (2), and the hook (1) of the crawler crane transports the pipe section (10) through the lifting rope (3) and the lifting beam (2) and moves in a foundation pit (20); The connecting device (4) comprises a connecting ring (41) and a connecting hole (42); the connecting hole (42) comprises an edge hole (422) and a middle hole (421); the edge hole (422) and the middle hole (421) are both provided on the lifting beam (2); and the lifting rope (3) is detachably fixedly connected to the edge hole (422) and the middle hole (421) via the connecting ring (41).

2. A construction device for hoisting rectangular pipe sections in a pipe gallery foundation pit according to claim 1, characterized in that: A contact plate (5) is fixedly connected to one side of the lifting beam (2) close to the pipe section (10).

3. A construction device for hoisting rectangular pipe sections in a pipe gallery foundation pit according to claim 2, characterized in that: Both ends of the hoisting beam (2) are fixedly connected with baffles (6).

4. A construction device for hoisting rectangular pipe sections in a pipe gallery foundation pit according to claim 2, characterized in that: A plurality of stiffening plates (7) are arranged between the abutment plate (5) and the hoisting beam (2), and two sides of the stiffening plates (7) are respectively fixedly connected to the abutment plate (5) and the hoisting beam (2).

5. The construction device for hoisting rectangular pipe sections in a pipe gallery foundation pit according to claim 2 is characterized in that: A mounting device (8) is provided between the abutment plate (5) and the pipe section (10), the mounting device (88) comprising a mounting bolt (81), a mounting ring (82), a mounting plate (83) and a mounting pin (84); a mounting hole (51) is provided on the abutment plate (5); a mounting groove (21) is provided on the hoisting beam (2); the mounting groove (21) is communicated with the mounting hole (51); the mounting bolt (81) is fixedly connected to the pipe section (10); the mounting ring (82) is fixedly connected to the mounting plate (83) and the mounting bolt (81) respectively; the mounting plate (83) passes through the mounting hole (51) and is plugged into the mounting groove (21); a through hole is provided on the mounting plate (83); the mounting pin (84) is plugged into the through hole; the mounting pin (84) is used to fix the mounting plate (83) in the mounting groove (21).

6. The construction device for hoisting rectangular pipe sections in a pipe gallery foundation pit according to claim 1, characterized in that: Two lifting ropes (3) are provided, and the two lifting ropes (3) are fixedly connected to the edge holes (422) on the lifting beam (2) through a connecting ring (41).

7. A construction device for hoisting rectangular pipe sections in a pipe gallery foundation pit according to claim 6, characterized in that: It also includes an auxiliary rope (9), one end of which is fixedly connected to the middle hole (421) of the lifting beam (2) through a connecting device (4), and the other end of the auxiliary rope (9) is fixedly connected to the hook (1) of the crawler crane. The auxiliary rope (9) is used to temporarily replace the lifting rope (3) to bear the load of the pipe section (10).

8. The construction device for hoisting rectangular pipe sections in a pipe gallery foundation pit according to claim 7, characterized in that: The auxiliary rope (9) comprises a first section (91), a second section (92) and a tensioning device (93); one end of the first section (91) is fixedly connected to the hook (1) of the crawler crane, and the other end is fixedly connected to the tensioning device (93); one end of the second section (92) is fixedly connected to the lifting beam (2), and the other end is fixedly connected to the tensioning device (93); the tensioning device (93) is used to tighten the second section (92) to bear the load of the pipe section (10).

9. A construction device for hoisting rectangular pipe sections in a pipe gallery foundation pit according to claim 8, characterized in that: The tensioning device (93) comprises a fixed frame (931), a telescopic member (932) and a lifting plate (933); the first section (91) is fixedly connected to the fixed frame (931); the lifting plate (933) and the telescopic member (932) are arranged in the fixed frame (931); the lifting plate (933) is fixedly connected to the second section (92); two ends of the telescopic member (932) are respectively fixedly connected to the fixed frame (931) and the lifting plate (933); and the telescopic member (932) is used to drive the lifting plate (933) to slide in the fixed frame (931).

10. A construction method for hoisting rectangular pipe sections in a pipe gallery foundation pit, characterized in that: The following steps are involved: S1, processing the hoisting beam (2): determine the positions of the mounting hole (51) and the mounting groove (21) according to the size of the pipe section (10), open the mounting hole (51) on the abutment plate (5), open the mounting groove (21) on the hoisting beam (2), fix the abutment plate (5) and the hoisting beam (2) together, then weld the baffle plates (6) at both ends of the hoisting beam (2), and weld the stiffening plate (7) between the hoisting beam (2) and the abutment plate (5), thus completing the processing of the hoisting beam (2); S2, installing the hoisting beam (2): first, fix the mounting bolt (81) to the prefabricated pipe section (10), then fix one end of the hoisting rope (3) to the hook (1) of the crawler crane, and fix the other end to the edge hole (422) of the hoisting beam (2), then move the hoisting beam (2) to the top of the mounting plate (83), so that the mounting plate (83) passes through the mounting hole (51) and the mounting groove (21), and then pass the mounting pin (84) through the through hole on the mounting plate (83), so that the mounting plate (83) and the hoisting beam (2) are fixed; S3, hoisting the pipe section (10) to the foundation pit (20): starting the hook (1) of the crawler crane to drive the pipe section (10) to descend at a uniform speed from between the two cross braces (30) to the bottom of the foundation pit (20) via the hoisting beam (2); S4, moving the connection position of the lifting rope (3) for the first time: after separating the connection ring (41) on the lifting rope (3) from the edge hole (422), the connection ring (41) is connected and fixed to the middle hole (421); S5, moving the pipe segment (10) for the first time: using the hook (1) of the crawler crane to drive the pipe segment (10) to move in the foundation pit (20) in the direction of the installed pipe segment (10), ensuring that the lifting rope (3) does not collide with the cross brace (30) during the movement. When the lifting rope (3) and the cross brace (30) are very close and about to collide, the hook (1) of the crawler crane is used to slowly lower the pipe segment (10) to the bottom of the foundation pit (20); S6, moving the connection position of the lifting rope (3) for the second time: after separating the connection ring (41) on the lifting rope (3) from the middle hole (421), the connection ring (41) is connected and fixed to the edge hole (422) so that the cross brace (30) is located between the two lifting ropes (3); S7, moving the pipe segment (10) for the second time: the hook (1) of the crawler crane drives the pipe segment (10) to move in the foundation pit (20) toward the installed pipe segment (10), ensuring that the lifting rope (3) does not collide with the cross brace (30) during the movement, so that the pipe segment (10) can move horizontally in the foundation pit (20) to the maximum extent, so that the pipe segment (10) is not affected by the cross brace (30) within a certain distance during the lifting process, and the position of the pipe segment (10) can be adjusted quickly, thereby completing the installation of the pipe segment (10).

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