Underground large diameter pipeline installation and laying construction method and system

Abstract

The present invention relates to the technical field of pipeline installation and laying, and in particular to an underground large-diameter pipeline installation and laying construction method and system, including a horizontally arranged pipeline transverse displacement mechanism, wherein a vertical support and guide mechanism is respectively installed at the bottom of both sides of the pipeline transverse displacement mechanism, and the bottoms of the two vertical support and guide mechanisms are supported on the ground at both sides of the excavated trench; a lifting and leveling device is fixedly connected to the bottom of the adjustment slider. This underground large-diameter pipeline installation and laying construction system can effectively ensure the hoisting and positioning of the large-diameter pipeline when cooperating with the laying of the underground large-diameter pipeline, and can realize the adjustment in the horizontal width direction, front-back direction and height direction along the excavated trench during the hoisting and positioning. The horizontal state of the large-diameter pipeline can be adjusted in the process of lifting and lowering the large-diameter pipeline, and the multi-directional adjustment effectively ensures the adjustment effect of the entire large-diameter pipeline, which is convenient for improving the effect of the subsequent horizontal laying of the pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline installation and laying, and in particular to a new system suitable for laying and installing large-diameter concrete underground sewage pipelines with large size and heavy weight, especially a construction method and system for laying underground large-diameter pipelines. Background Art

[0002] Concrete drainage and sewage pipes are the main load-bearing pipes in the city's underground drainage system. When installing the pipes, due to their large diameter and overall weight, they usually require the assistance of lifting equipment to complete the lowering of the pipes when installing them into the excavated ground trenches. At the same time, after lowering, the centering and end face alignment between adjacent pipes need to be considered.

[0003] At present, in the prior art, the above-mentioned pipeline hoisting, lowering and installation and laying work is generally carried out using pipeline hoisting equipment.

[0004] For example, in the patent document with patent publication number CN219449062U, a water supply and drainage pipe laying and lifting equipment that is easy to move and construct is disclosed. Its main structure includes an installation frame with two sets of fixed plates fixedly installed on the top; a moving mechanism, which is arranged above the installation frame, and the moving mechanism includes a rack and a gear. Two sets of racks are fixedly installed on the top of the installation frame, and two sets of gears are arranged on the top of the rack; an installation component, including a lifting mechanism and a clamping mechanism. The lifting mechanism is arranged above the installation frame and located above the moving mechanism, and the clamping mechanism is arranged above the installation frame and located below the lifting mechanism.

[0005] It can be seen from the contents recorded in the above-mentioned prior art patent that it mainly realizes the lateral displacement of the pipeline through the coordinated use of a rack, a gear, a rotating rod, a mounting frame, a first pulley, a first belt and a first motor. During the overall lifting and lowering process, the pipeline positioning effect after lowering is prone to poor and the rapid docking and installation of two adjacent pipelines cannot be effectively guaranteed, resulting in poor overall installation effect and poor stability after installation. At the same time, serious leakage is prone to occur at the docking site after the subsequent installation is completed.

[0006] To this end, the present invention optimizes and improves the problems existing in the laying and installation process of concrete drainage pipes in the prior art, and hereby proposes an underground large-diameter pipe installation and construction method and system suitable for the laying and installation of large-diameter concrete underground sewage pipes with large size and heavy weight, so as to better solve the problems existing in the prior art. Summary of the invention

[0007] The present invention solves one of the above technical problems, and the technical solution adopted is: an underground large-diameter pipeline installation and laying construction system, including a horizontally arranged pipeline transverse displacement mechanism, and a vertical support guide mechanism is respectively installed at the bottom of both sides of the pipeline transverse displacement mechanism, and the bottoms of the two vertical support guide mechanisms are supported on the ground on both sides of the excavated trench;

[0008] The pipeline transverse displacement mechanism includes a horizontally arranged installation frame, and a horizontal positioning screw is installed in the inner frame of the installation frame. The two ends of the horizontal positioning screw respectively interact and penetrate through the through holes on the end surface of the installation frame at corresponding positions through the stepped shaft sections at the ends thereof. A positioning slider is threadedly screwed on the outer side wall of the horizontal positioning screw, and the front and rear sides of the positioning slider are respectively abutted against the inner frame side walls of the installation frame. A positioning drive component is fixedly installed on the left end of the installation frame, and a lifting and leveling device is fixedly connected to the bottom of the positioning slider, and the bottom of the lifting and leveling device cooperates with the large-diameter pipeline to be laid and installed thereunder.

[0009] In any of the above schemes, it is preferred that the positioning drive component includes a positioning motor frame fixedly mounted on the left end of the mounting frame, a horizontal positioning motor is fixedly mounted inside the positioning motor frame, and the motor shaft of the horizontal positioning motor is connected to the stepped shaft section at the left end of the horizontal positioning screw.

[0010] In any of the above schemes, it is preferred that the vertical supporting and guiding mechanism includes two lifting cylinders which are spaced apart and vertically arranged on the front and rear sides of the corresponding ends of the mounting frame, the tops of the piston rods of the two lifting cylinders are respectively installed on the bottom of the mounting frame, the bottom of the cylinder barrel of each lifting cylinder is respectively fixedly installed on the top of a horizontal base, and two ground supporting wheel groups are respectively installed on the bottom of the horizontal base along the front and rear ends thereof, and the bottom of each ground supporting wheel group is supported on the ground and rotates with it when the entire construction system is pulled.

[0011] In any of the above schemes, it is preferred that the lifting and leveling device includes a horizontal welding box arranged along the length direction of the excavated trench, the top of the middle section of the horizontal welding box is fixed to the bottom of the positioning slider, and a double-hook lifting and leveling mechanism is symmetrically installed at the front and rear ends of the horizontal welding box, and the bottoms of the two double-hook lifting and leveling mechanisms are respectively matched with the pipe locking and positioning mechanisms at the corresponding positions, and the two pipe locking and positioning mechanisms are both matched with the sleeves on the corresponding end outer walls of the large-diameter pipes to be installed and laid, and the inner ends of the two double-hook lifting and leveling mechanisms are connected and matched with the corresponding output ends of the driving clutch unit installed inside the installation bin of the horizontal welding box. When the driving clutch unit is working, it drives at least one of the double-hook lifting and leveling mechanisms at the corresponding position to be in a working state, and brakes are respectively installed at the corresponding ends of the installation bin, and each of the brakes is used in conjunction with the double-hook lifting and leveling mechanisms at the corresponding positions and is used to brake the double-hook lifting and leveling mechanisms.

[0012] In any of the above schemes, it is preferred that the driving clutch unit includes a dual-output shaft motor fixedly mounted on the middle section of the mounting bin, and a clutch is connected to the motor shafts on the front and rear sides of the dual-output shaft motor respectively through a coupling, and the output end of each clutch is used to drive the double-hook lifting and leveling mechanism at the corresponding position.

[0013] Preferably, in any of the above schemes, a mounting seat fixedly installed in the mounting bin is provided between the clutch and the double-hook lifting and leveling mechanism at the corresponding position, and two horizontally arranged telescopic electric cylinders are fixedly installed at intervals between the two mounting seats, and the inner ends of the two telescopic electric cylinders are respectively connected to the output end of the clutch through internal connecting seats, and the ends of the piston rods of the two telescopic electric cylinders are respectively movable through the mounting seats at the corresponding positions and connected to the ends of the double-hook lifting and leveling mechanism passing through the brake fixedly installed at the corresponding positions through external connecting seats. The spacing between the two double-hook lifting and leveling mechanisms is adjusted by controlling the extension and retraction of the telescopic electric cylinders at both ends, thereby realizing the adjustment of the stability of the currently lifted large-diameter pipeline.

[0014] In any of the above schemes, preferably, the double-hook lifting and leveling mechanism includes a horizontally arranged horizontal suspension shaft, the inner end of the horizontal suspension shaft moves through the brake at the corresponding position and extends into the interior of the installation bin, and the rotation or braking of the horizontal suspension shaft is controlled by the cooperation of the driving clutch unit, the clutch and the brake. Two wire rope drum assemblies are fixedly installed at intervals on the outer wall of the horizontal suspension shaft, and a lifting wire rope is wound on the outer wall of each wire rope drum assembly. A lifting hook is fixedly installed at the bottom of each lifting wire rope, and each lifting hook is used to hook the pipe locking and positioning mechanism at a corresponding position.

[0015] In any of the above schemes, it is preferred that the pipe locking and positioning mechanism includes two semicircular rigid clamps symmetrically arranged from top to bottom, and the two semicircular rigid clamps cooperate to achieve clamping and covering of the outer wall of the large-diameter pipe to be lifted at the current position, and the horizontal sections on both sides of the lower part of the two semicircular rigid clamps are respectively fixedly connected by alloy ground bolts, and a locking nut is screwed on the outer wall of each alloy ground bolt, and the two locking nuts at corresponding positions cooperate to achieve locking and positioning of the horizontal sections of the two semicircular rigid clamps, and a locking alloy chain is installed between the two relatively arranged alloy ground bolts, and the two ends of the dual-purpose locking alloy chain are respectively fixedly installed on the outer wall of the central axis section integrally formed at the top of the alloy ground bolts at the corresponding positions.

[0016] The present invention also provides an underground large-diameter pipeline installation and laying construction method implemented by using an underground large-diameter pipeline installation and laying construction system, wherein the underground large-diameter pipeline installation and laying construction system is the underground large-diameter pipeline installation and laying construction system as described above; the underground large-diameter pipeline installation and laying construction method comprises the following steps:

[0017] S1: Ground leveling: Pre-level the ground according to the pipeline laying design route. In addition, in the process of designing the route, it is necessary to mark the surrounding buildings and underground structures to avoid construction interference;

[0018] S2: Trench excavation: trenching is completed on the flattened road surface according to the preset route. When encountering groundwater during trench excavation, precipitation treatment must be carried out first. After precipitation is completed and waiting for 72-96 hours, excavation can continue;

[0019] S3: Backfill cushion: When excavating close to the bottom of the trench, a soil layer of at least 20 cm must be retained at the bottom of the trench and removed manually. After removal, backfill with plain soil and graded gravel and compact it multiple times to form a gravel cushion;

[0020] S4: Pipeline foundation construction: After the gravel cushion is formed, concrete is poured to form a concrete pipeline foundation, and the pipeline foundation is waited for to solidify and take shape;

[0021] S5: While waiting for the pipeline foundation to be solidified, corresponding pipeline locking and positioning mechanisms are installed at both ends of each large-diameter pipeline to be laid and installed respectively for standby use;

[0022] S6: After the pipeline foundation is solidified, an external traction machine is used to pull the underground large-diameter pipeline installation and laying construction system into place;

[0023] S7: The underground large-diameter pipeline installation and laying construction system is started, the pipeline lateral displacement mechanism is controlled to drive the adjustment slider and the lifting and leveling device at the bottom to be in place, the clutch unit is controlled to operate and drive the double-hook lifting and leveling mechanisms at both ends to adjust the spacing and lifting and leveling mechanisms to be in place, and then the lifting hooks at the bottom of the double-hook lifting and leveling mechanisms at the corresponding positions are hooked on the corresponding pipeline locking and positioning mechanisms;

[0024] S8: Control the lifting and leveling device to lift and drive the large-diameter pipeline to lift horizontally, and keep it stable after it reaches a certain height;

[0025] S9: Continue to control the external traction machine to pull the underground large-diameter pipeline installation and laying construction system with the large-diameter pipeline suspended thereon to move along the length direction of the dug trench to the position where the laying is required, lower the suspended large-diameter pipeline, and control the horizontal state of the large-diameter pipeline in sequence and at the same time until the large-diameter pipeline is laid flat on the pipeline foundation in the trench after excavation;

[0026] S10: Repeat the above steps to continue to complete the lifting and laying of the next large-diameter pipe, and control the adjacent large-diameter pipe end faces to be pressed tightly and pour concrete to fill the gaps, and repeat this process to complete the entire pipeline construction operation inside the excavated trench.

[0027] In any of the above schemes, it is preferred that in step S9, after the large-diameter pipeline is laid flat on the pipeline foundation in the excavated trench, the hanging hook is removed, and then the corresponding alloy ground bolts on each pipeline locking and positioning mechanism are drilled into the corresponding pipeline foundation using drilling equipment in turn to achieve clamping and fixing of the large-diameter pipeline.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The underground large-diameter pipeline installation and laying construction system of the present invention can effectively ensure the lifting and positioning of the large-diameter pipeline when cooperating with the laying of the underground large-diameter pipeline. At the same time, it can realize the adjustment in the horizontal width direction, front-back direction (cooperating with the external traction machine) and height direction along the excavated trench during the lifting and positioning. At the same time, the horizontal state of the large-diameter pipeline can be adjusted in the process of lifting and lowering the large-diameter pipeline. The multi-directional adjustment effectively ensures the adjustment effect of the entire large-diameter pipeline, which is convenient for improving the effect of the subsequent horizontal laying of the pipeline.

[0030] 2. The operation of the double-hook lifting and leveling mechanism configured on the lifting and leveling device set in the local underground large-diameter pipeline installation and laying construction system can be kept synchronous or asynchronous. The control of the driving clutch unit can drive the two double-hook lifting and leveling mechanisms at the corresponding two ends to lift the two ends of the large-diameter pipeline, thereby controlling the horizontal effect or inclination amplitude of the entire large-diameter pipeline according to the current installation needs, which can meet the installation requirements under a small slope state and ensure the installation effect under multiple working conditions.

[0031] 3. The pipe locking and positioning mechanism configured on each large-diameter pipe can cooperate with the double-hook lifting and leveling mechanism in the corresponding state to achieve hooking coordination, thereby ensuring the stability of the entire large-diameter pipe during lifting and hooking. In addition, two lifting hooks are set at the corresponding ends of each large-diameter pipe to better cooperate to prevent the problem of unhooking caused by operation shaking during lifting, and the overall lifting safety is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn according to the actual scale.

[0033] Figure 1 It is a schematic diagram of the structure of the underground large-diameter pipeline installation and laying construction system of the present invention in use state.

[0034] Figure 2 It is a structural schematic diagram of the underground large-diameter pipeline installation and laying construction system of the present invention.

[0035] Figure 3 It is a structural schematic diagram of the pipeline locking and positioning mechanism of the present invention in the installation state.

[0036] Figure 4 It is a structural schematic diagram of the pipeline locking and positioning mechanism of the present invention in a locking state for a large-diameter pipeline.

[0037] Figure 5 It is a side structural schematic diagram of the lifting and leveling device of the present invention.

[0038] Figure 6 It is a schematic diagram of the internal structure of the lifting and leveling device of the present invention in a side view.

[0039] In the figure, 1. Pipeline lateral displacement mechanism; 101. Installation frame; 102. Inner frame; 103. Horizontal adjustment screw; 104. Adjustment slide block; 2. Excavation of trench; 3. Ground; 4. Large diameter pipeline; 5. Adjustment motor frame; 6. Horizontal adjustment motor;

[0040] 7. Lifting cylinder; 8. Horizontal base; 9. Ground support wheel set; 10. Horizontal welding box; 11. Double hook lifting and leveling mechanism;

[0041] 12. Brake; 13. Mounting bin; 14. Dual output shaft motor; 15. Clutch; 16. Mounting stand; 17. Telescopic electric cylinder; 18. Internal connecting stand; 19. External connecting stand; 20. Horizontal suspension shaft; 21. Wire rope drum assembly; 22. Lifting wire rope; 23. Lifting hook; 24. Pipeline locking and positioning mechanism; 25. Semicircular rigid clamp; 2501, horizontal section; 26. Alloy ground bolt; 27. Locking nut; 28. Locking alloy chain; 29. ​​Center shaft section; 30. Pipeline foundation. DETAILED DESCRIPTION

[0042] The following is a detailed description of the embodiments of the technical solution of the present invention in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present invention. Figure 1-Figure 6 as shown in .

[0043] Embodiment 1: An underground large-diameter pipeline installation and laying construction system, comprising a horizontally arranged pipeline transverse displacement mechanism 1, wherein a vertical support and guide mechanism is respectively installed at the bottom of both sides of the pipeline transverse displacement mechanism 1, and the bottoms of the two vertical support and guide mechanisms are supported on the ground 3 on both sides of the excavated trench 2; the pipeline transverse displacement mechanism 1 comprises a horizontally arranged installation frame 101, wherein a horizontal adjustment screw 103 is installed in an inner frame 102 of the installation frame 101, and the two ends of the horizontal adjustment screw 103 are respectively connected by the end The stepped shaft segments of the horizontal adjustment screw 103 are interactively passed through the through holes at the end face of the installation frame 101 at the corresponding positions. A positioning slider 104 is screwed on the outer wall of the horizontal adjustment screw 103. The front and rear sides of the positioning slider 104 are respectively abutted against the side walls of the inner frame 102 of the installation frame 101. A positioning drive component is fixedly installed at the left end of the installation frame 101. A lifting and leveling device is fixedly connected to the bottom of the positioning slider 104. The bottom of the lifting and leveling device cooperates with the large-diameter pipeline 4 to be laid and installed below it. The underground large-diameter pipeline installation and laying construction system of the present invention is mainly used in the process of underground large-diameter pipeline 4 installation and laying construction to lift, transfer, lower and lay the large-diameter pipeline 4, reducing the difficulty of the large-diameter pipeline 4 transfer process. After the large-diameter pipeline 4 is hooked, the horizontal displacement of the entire lifting and leveling device can be realized by starting the pipeline transverse displacement mechanism 1. In addition, the lifting and lowering of the entire large-diameter pipeline 4 on it can be driven by controlling the lifting and lowering of the vertical support guide mechanism.

[0044] In any of the above schemes, it is preferred that the positioning drive component includes a positioning motor frame 5 fixedly mounted on the left end of the installation frame 101, and a horizontal positioning motor 6 is fixedly mounted inside the positioning motor frame 5, and the motor shaft of the horizontal positioning motor 6 is connected to the stepped shaft section at the left end of the horizontal positioning screw 103. When it is necessary to control the operation of the pipeline transverse displacement mechanism 1, the corresponding horizontal positioning motor 6 can be started to operate, thereby driving the horizontal positioning screw 103 to operate. When the horizontal positioning screw 103 operates, it will drive the positioning slider 104 connected thereto to achieve horizontal movement in the left and right directions, and finally achieve the purpose of driving the corresponding lower lifting and leveling device to shift horizontally.

[0045] In any of the above schemes, it is preferred that the vertical support and guide mechanism includes two lifting cylinders 7 spaced and vertically arranged along the front and rear sides of the corresponding ends of the installation frame 101, the tops of the piston rods of the two lifting cylinders 7 are respectively installed on the bottom of the installation frame 101, and the bottoms of the cylinder barrels of each lifting cylinder 7 are respectively fixedly installed on the top of a horizontal base 8, and two ground support wheel groups 9 are respectively installed at the bottom of the horizontal base 8 along its front and rear ends, and the bottoms of each ground support wheel group 9 are supported on the ground 3 and rotate with the whole construction system when it is pulled. When the vertical support and guide mechanism is working, it can control the lifting and lowering of the pipeline lateral displacement mechanism 1 above it by controlling the lifting and lowering of the corresponding lifting cylinder 7, so as to control it to move to the corresponding height position as needed. In addition, the main function of the ground support wheel group 9 installed at the bottom of each horizontal base 8 is to support and realize the guide displacement under passive traction state.

[0046] In any of the above schemes, it is preferred that the lifting and leveling device includes a horizontal welding box 10 arranged along the length direction of the excavated trench 2, the top of the middle section of the horizontal welding box 10 is fixed to the bottom of the positioning slider 104, and a double-hook lifting and leveling mechanism 11 is symmetrically installed at the front and rear ends of the horizontal welding box 10, and the bottoms of the two double-hook lifting and leveling mechanisms 11 are respectively matched with the pipeline locking and positioning mechanisms 24 at the corresponding positions, and the two pipeline locking and positioning mechanisms 24 are matched with the sleeves at the corresponding ends of the large-diameter pipeline 4 to be installed and laid. On the outer wall, the inner ends of the two double-hook lifting and leveling mechanisms 11 are connected and cooperated with the corresponding output ends of the driving clutch unit installed inside the installation bin 13 of the horizontal welding box 10. When the driving clutch unit is working, it drives at least one of the double-hook lifting and leveling mechanisms 11 at the corresponding position to be in a working state. Brakes 12 are respectively installed at the corresponding ends of the installation bin 13. Each brake 12 is used in conjunction with the double-hook lifting and leveling mechanism 11 at the corresponding position and is used to brake the double-hook lifting and leveling mechanism 11. The main driving part of the lifting and leveling device is installed in the installation bin 13 inside the horizontal welding box 10. When working, the driving clutch unit inside the installation bin 13 is started to realize the regulation of the corresponding double-hook lifting and leveling mechanisms 11 on both sides thereof. By controlling the opening of the clutch 15 and the brake 12 on the corresponding side, it is possible to drive only the double-hook lifting and leveling mechanism 11 on one side to realize operation, while the double-hook lifting and leveling mechanism 11 on the other side remains in a static braking state, thereby realizing the control of the lifting and lowering amplitude of both ends of the large-diameter pipeline 4 currently in a hanging state, and controlling the large-diameter pipeline 4 to be in an inclined or horizontal state according to specific laying requirements.

[0047] In any of the above schemes, it is preferred that the driving clutch unit includes a dual-output shaft motor 14 fixedly mounted on the middle section of the mounting bin 13, and a clutch 15 is connected to the motor shafts on the front and rear sides of the dual-output shaft motor 14 through a coupling, and the output ends of each of the clutches 15 are respectively used to drive the dual-hook lifting and leveling mechanism 11 at the corresponding position. When the dual-output shaft motor 14 is in operation, it can transmit power to the dual-hook lifting and leveling mechanism 11 at the corresponding end through the corresponding clutch 15, thereby driving the operation of the dual-hook lifting and leveling mechanism 11 to lift or lower the end of the large-diameter pipe 4 at the current end; similarly, when the clutch 15 stops, the transmission power will be cut off, thereby realizing the truncation of the power at the current end, and at this time, the brake 12 at the corresponding position is used to brake the dual-hook lifting and leveling mechanism 11, thereby preventing it from falling.

[0048] In any of the above schemes, it is preferred that a mounting seat 16 fixedly installed in the mounting bin 13 is further provided between the clutch 15 and the double-hook lifting and leveling mechanism 11 at the corresponding position, and two horizontally arranged telescopic electric cylinders 17 are fixedly installed at intervals between the two mounting seats 16, and the inner ends of the two telescopic electric cylinders 17 are respectively connected to the output end of the clutch 15 through an internal connecting seat 18, and the ends of the piston rods of the two telescopic electric cylinders 17 are respectively movable through the mounting seats 16 at the corresponding positions and connected to the ends of the double-hook lifting and leveling mechanism 11 passing through the brake 12 fixedly installed at the corresponding positions through an external connecting seat 19, and the spacing between the two double-hook lifting and leveling mechanisms 11 is adjusted by controlling the extension and retraction of the telescopic electric cylinders 17 at both ends to achieve the adjustment of the stability of the lifting of the current large-diameter pipeline 4. Taking into account that pipes with the same outer diameter have different lengths due to different batches, when lifting a large-diameter pipe 4 with a longer length, it is necessary to control the relative spacing distance between the two double-hook lifting and leveling mechanisms 11 to expand. Therefore, at this time, it is necessary to control the extension of the telescopic electric cylinder 17 to drive the corresponding double-hook lifting and leveling mechanisms 11 away from each other, so as to facilitate the cooperation with the two pipe locking and positioning mechanisms 24 installed on the large-diameter pipes 4 with relatively large spacing to achieve the purpose of lifting the current large-diameter pipe 4, thereby ensuring the stability of the entire lifting process.

[0049] In any of the above schemes, it is preferred that the double-hook lifting and leveling mechanism 11 includes a horizontally arranged horizontal suspension shaft 20, the inner end of the horizontal suspension shaft 20 moves through the brake 12 at the corresponding position and extends into the installation bin 13, and the rotation or braking of the horizontal suspension shaft 20 is controlled by the cooperation of the driving clutch unit, the clutch 15 and the brake 12. Two wire rope winding drum assemblies 21 are fixedly installed at intervals on the outer wall of the horizontal suspension shaft 20, and a lifting wire rope 22 is wound on the outer wall of each wire rope winding drum assembly 21. A lifting hook 23 is fixedly installed at the bottom of each lifting wire rope 22, and each lifting hook 23 is used to hook the pipe locking and positioning mechanism 24 at the corresponding position. After the double-hook lifting and leveling mechanism 11 is adjusted to the proper length, the lifting wire rope 22 at the lower end can be lowered by controlling the operation of the driving clutch unit, thereby achieving the purpose of driving the corresponding lifting hook 23 to move downward, and the positioning hook operation before hanging can be achieved by hooking the corresponding lifting hook 23 on the corresponding pipe locking and positioning mechanism 24. When the double-hook lifting and leveling mechanism 11 is in operation, it will drive the corresponding horizontal suspension shaft 20 to rotate, thereby mobilizing the lifting wire rope 22 wound thereon to operate, thereby achieving the purpose of lowering the lifting hook 23, and achieving the purpose of controlling the position of the lifting hook 23 as needed.

[0050] The present invention also provides an underground large-diameter pipeline 4 installation and laying construction method implemented by using an underground large-diameter pipeline installation and laying construction system, wherein the underground large-diameter pipeline installation and laying construction system is the underground large-diameter pipeline installation and laying construction system as described above; the underground large-diameter pipeline 4 installation and laying construction method comprises the following steps:

[0051] S1: Leveling the ground 3: Pre-level the ground 3 of the rock and soil according to the pipeline laying design route. In addition, in the process of designing the route, it is necessary to mark the surrounding buildings and underground structures to avoid construction interference;

[0052] S2: Excavation of trench 2: The trench is completed on the flattened road surface according to the preset route. When groundwater is encountered during the excavation of trench 2, precipitation treatment must be carried out first. After precipitation is completed and waiting for 72-96 hours, excavation can continue;

[0053] After the precipitation operation is completed, the purpose of waiting is to allow the inside of the trench to dry to a certain extent to ensure the stability of the foundation.

[0054] S3: Backfill cushion: When excavating close to the bottom of the trench, a soil layer of at least 20 cm must be retained at the bottom of the trench and removed manually. After removal, backfill with plain soil and graded gravel and compact it multiple times to form a gravel cushion;

[0055] S4: Pipeline foundation construction: After the gravel cushion is formed, concrete is poured to form a concrete pipeline foundation, and the pipeline foundation is waited for to solidify and take shape;

[0056] S5: While waiting for the pipeline foundation to be solidified, corresponding pipeline locking and positioning mechanisms 24 are installed at both ends of each large-diameter pipeline 4 to be laid and installed, respectively, for use;

[0057] Before lifting each large-diameter pipeline, each pipeline locking and positioning mechanism 24 needs to be manually installed in place in sequence. The specific spacing between two pipeline locking and positioning mechanisms 24 is adjusted and controlled according to the lifting requirements and the current length of the pipeline to achieve stable lifting.

[0058] S6: After the pipeline foundation is solidified, an external traction machine is used to pull the underground large-diameter pipeline installation and laying construction system into place;

[0059] S7: The underground large-diameter pipeline installation and laying construction system is started, the pipeline lateral displacement mechanism 1 is controlled to drive the adjustment slider 104 and the lifting and leveling device at the bottom thereof to be in place, the driving clutch unit is controlled to operate and drive the double-hook lifting and leveling mechanisms 11 at both ends to adjust the spacing and lifting and leveling mechanisms 11 to be in place, and then the lifting hooks 23 at the bottom of the double-hook lifting and leveling mechanisms 11 at the corresponding positions are hooked on the corresponding pipeline locking and positioning mechanisms 24;

[0060] When the underground large-diameter pipeline installation and laying construction system is working, it is possible to control the operation of the corresponding components of the entire system to adjust the large-diameter pipeline 4 in the suspended state to move along the horizontal width direction. At the same time, it can move along the laying length direction by following the action of the external traction machine. In addition, the large-diameter pipeline 4 in the suspended state will be controlled to be in a horizontal state or an inclined state according to the laying requirements, so as to achieve the control of the pipeline according to specific needs to achieve accurate pre-adjustment before laying.

[0061] S8: Control the lifting and leveling device to lift and drive the large-diameter pipeline 4 to lift horizontally, and keep it stable after it reaches a certain height;

[0062] S9: Continue to control the external traction machine to pull the underground large-diameter pipeline installation and laying construction system with the large-diameter pipeline 4 suspended thereon to move along the length direction of the dug trench to the position where the laying is required, lower the suspended large-diameter pipeline 4, and sequentially and simultaneously control the horizontal state of the large-diameter pipeline 4 until the large-diameter pipeline 4 is placed flat on the pipeline foundation in the trench after excavation;

[0063] When laying down the large-diameter pipeline 4, the state of the pipeline is pre-adjusted according to the current situation of the pipeline foundation, and the pipeline is laid down smoothly to reduce the difficulty of laying down and laying.

[0064] S10: Repeat the above steps to continue to complete the lifting and laying of the next large-diameter pipe 4, and control the end faces of the adjacent large-diameter pipes 4 to be pressed tightly and pour concrete to fill the gaps, and repeat this process to complete the entire pipeline construction operation inside the excavated trench 2.

[0065] In any of the above schemes, it is preferred that in step S9, after the large-diameter pipe 4 is placed flat on the pipe foundation in the excavated trench, the hook is removed, and then the corresponding alloy ground bolts 26 on each pipe locking and positioning mechanism 24 are drilled into the corresponding pipe foundation by drilling equipment in turn to achieve the clamping and fixing of the large-diameter pipe 4. After the large-diameter pipe 4 is placed on the concrete pipe foundation inside the excavated trench 2, the corresponding alloy ground bolts 26 are controlled to be drilled into the concrete pipe foundation and the tensioning effect of the alloy ground bolts 26 at both ends of the locking alloy chain 28 is used to achieve the current locking alloy chain 28 to press down and lock the upper part of the large-diameter pipe 4.

[0066] Embodiment 2: An underground large-diameter pipeline installation and laying construction system, comprising a horizontally arranged pipeline transverse displacement mechanism 1, wherein a vertical support guide mechanism is respectively installed at the bottom of both sides of the pipeline transverse displacement mechanism 1, and the bottoms of the two vertical support guide mechanisms are supported on the ground 3 on both sides of the excavated trench 2; the pipeline transverse displacement mechanism 1 comprises a horizontally arranged installation frame 101, wherein a horizontal adjustment screw 103 is installed in an inner frame 102 of the installation frame 101, and the two ends of the horizontal adjustment screw 103 are respectively connected by the end The stepped shaft segments interactively pass through the through holes on the end face of the installation frame 101 at the corresponding positions, and a positioning slider 104 is threadedly screwed on the outer wall of the horizontal positioning screw 103, and the front and rear sides of the positioning slider 104 are respectively abutted against the side walls of the inner frame 102 of the installation frame 101, and a positioning drive component is fixedly installed on the left end of the installation frame 101, and a lifting and leveling device is fixedly connected to the bottom of the positioning slider 104, and the bottom of the lifting and leveling device cooperates with the large-diameter pipeline 4 to be laid and installed thereunder.

[0067] The underground large-diameter pipeline installation and laying construction system of the present invention is mainly used in the installation and laying construction process of the underground large-diameter pipeline 4 to lift, transfer, lower and install the large-diameter pipeline 4, thereby reducing the difficulty of the transfer process of the large-diameter pipeline 4. After the large-diameter pipeline 4 is hooked, the horizontal displacement mechanism 1 of the pipeline can be started to realize the horizontal displacement of the entire lifting and leveling device. In addition, the lifting and lowering of the entire large-diameter pipeline 4 on it can be driven by controlling the lifting and lowering of the vertical support guide mechanism.

[0068] In any of the above schemes, it is preferred that the positioning drive component includes a positioning motor frame 5 fixedly mounted on the left end of the mounting frame 101, and a horizontal positioning motor 6 is fixedly mounted inside the positioning motor frame 5, and the motor shaft of the horizontal positioning motor 6 is connected to the stepped shaft section at the left end of the horizontal positioning screw 103.

[0069] When it is necessary to control the operation of the pipeline lateral shift mechanism 1, the corresponding horizontal adjustment motor 6 can be started to drive the horizontal adjustment screw 103 to operate. When the horizontal adjustment screw 103 operates, it will drive the adjustment slider 104 connected thereto to achieve horizontal movement along the left and right directions, ultimately achieving the purpose of driving the corresponding lower lifting and leveling device to shift horizontally.

[0070] In any of the above schemes, it is preferred that the vertical supporting and guiding mechanism includes two lifting cylinders 7 which are spaced apart and vertically arranged on the front and rear sides of the corresponding ends of the mounting frame 101, the tops of the piston rods of the two lifting cylinders 7 are respectively installed on the bottom of the mounting frame 101, and the bottom of the cylinder barrel of each lifting cylinder 7 is respectively fixedly installed on the top of a horizontal base 8, and two ground supporting wheel groups 9 are respectively installed on the bottom of the horizontal base 8 along the front and rear ends thereof, and the bottom of each ground supporting wheel group 9 is supported on the ground 3 and rotates with it when the entire construction system is pulled.

[0071] When the vertical support guide mechanism is in operation, the lifting and lowering of the corresponding lifting cylinder 7 can be controlled to realize the lifting and lowering of the pipeline transverse displacement mechanism 1 above it, so as to control it to move to the corresponding height position as needed.

[0072] In addition, the ground support wheel set 9 installed at the bottom of each horizontal base 8 mainly functions to support and realize guided displacement under passive traction state.

[0073] In any of the above schemes, it is preferred that the lifting and leveling device includes a horizontal welding box 10 arranged along the length direction of the excavated trench 2, the top of the middle section of the horizontal welding box 10 is fixed to the bottom of the positioning slider 104, and a double-hook lifting and leveling mechanism 11 is symmetrically installed at the front and rear ends of the horizontal welding box 10, and the bottoms of the two double-hook lifting and leveling mechanisms 11 are respectively matched with the pipeline locking and positioning mechanisms 24 at the corresponding positions, and the two pipeline locking and positioning mechanisms 24 are matched with the sleeves at the corresponding ends of the large-diameter pipeline 4 to be installed and laid. On the outer wall, the inner ends of the two double-hook lifting and leveling mechanisms 11 are connected and cooperated with the corresponding output ends of the driving clutch unit installed inside the installation bin 13 of the horizontal welding box 10. When the driving clutch unit is working, it drives at least one of the double-hook lifting and leveling mechanisms 11 at the corresponding position to be in a working state. Brakes 12 are respectively installed at the corresponding ends of the installation bin 13. Each brake 12 is used in conjunction with the double-hook lifting and leveling mechanism 11 at the corresponding position and is used to brake the double-hook lifting and leveling mechanism 11.

[0074] The main driving part of the lifting and leveling device is installed in the installation bin 13 inside the horizontal welding box 10. When working, the driving clutch unit inside the installation bin 13 is started to realize the regulation of the corresponding double-hook lifting and leveling mechanisms 11 on both sides thereof. By controlling the opening of the clutch 15 and the brake 12 on the corresponding side, it is possible to drive only the double-hook lifting and leveling mechanism 11 on one side to realize operation, while the double-hook lifting and leveling mechanism 11 on the other side remains in a static braking state, thereby realizing the control of the lifting and lowering amplitude of both ends of the large-diameter pipeline 4 currently in a hanging state, and controlling the large-diameter pipeline 4 to be in an inclined or horizontal state according to specific laying requirements.

[0075] In any of the above schemes, it is preferred that the driving clutch unit includes a dual-output shaft motor 14 fixedly mounted on the middle section of the mounting bin 13, and a clutch 15 is connected to the motor shafts on the front and rear sides of the dual-output shaft motor 14 through a coupling, respectively, and the output end of each clutch 15 is used to drive the double-hook lifting and leveling mechanism 11 at the corresponding position.

[0076] When the dual-output shaft motor 14 is in operation, it can transmit power to the double-hook lifting and leveling mechanism 11 at the corresponding end through the corresponding clutch 15, thereby driving the operation of the double-hook lifting and leveling mechanism 11 to lift or lower the end of the large-diameter pipe 4 at the current end; similarly, when the clutch 15 stops, the transmission power will be cut off, thereby realizing the cut-off of the power at the current end. At this time, the brake 12 at the corresponding position is used to brake the double-hook lifting and leveling mechanism 11 to prevent it from falling.

[0077] In any of the above schemes, it is preferred that a mounting seat 16 fixedly installed in the mounting bin 13 is further provided between the clutch 15 and the double-hook lifting and leveling mechanism 11 at the corresponding position, and two horizontally arranged telescopic electric cylinders 17 are fixedly installed at intervals between the two mounting seats 16, and the inner ends of the two telescopic electric cylinders 17 are respectively connected to the output end of the clutch 15 through an internal connecting seat 18, and the ends of the piston rods of the two telescopic electric cylinders 17 are respectively movable through the mounting seats 16 at the corresponding positions and connected to the ends of the double-hook lifting and leveling mechanism 11 passing through the brake 12 fixedly installed at the corresponding positions through an external connecting seat 19, and the spacing between the two double-hook lifting and leveling mechanisms 11 is adjusted by controlling the extension and retraction of the telescopic electric cylinders 17 at both ends to achieve the adjustment of the stability of the lifting of the current large-diameter pipeline 4.

[0078] Taking into account that pipes with the same outer diameter have different lengths due to different batches, when lifting a large-diameter pipe 4 with a longer length, it is necessary to control the relative spacing distance between the two double-hook lifting and leveling mechanisms 11 to expand. Therefore, at this time, it is necessary to control the extension of the telescopic electric cylinder 17 to drive the corresponding double-hook lifting and leveling mechanisms 11 away from each other, so as to facilitate the cooperation with the two pipe locking and positioning mechanisms 24 installed on the large-diameter pipes 4 with relatively large spacing to achieve the purpose of lifting the current large-diameter pipe 4, thereby ensuring the stability of the entire lifting process.

[0079] In any of the above schemes, it is preferred that the double-hook lifting and leveling mechanism 11 includes a horizontally arranged horizontal suspension shaft 20, the inner end of the horizontal suspension shaft 20 moves through the brake 12 at the corresponding position and extends into the installation bin 13, and the rotation or braking of the horizontal suspension shaft 20 is controlled by the cooperation of the driving clutch unit, the clutch 15 and the brake 12. Two wire rope winding drum assemblies 21 are fixedly installed at intervals on the outer wall of the horizontal suspension shaft 20, and a lifting wire rope 22 is wound on the outer wall of each wire rope winding drum assembly 21. A lifting hook 23 is fixedly installed at the bottom of each lifting wire rope 22, and each lifting hook 23 is used to hook the pipe locking and positioning mechanism 24 at the corresponding position.

[0080] After the double-hook lifting and leveling mechanism 11 is adjusted to the extended length, the lifting wire rope 22 at its lower end can be lowered by controlling the operation of the driving clutch unit, thereby achieving the purpose of driving the corresponding lifting hook 23 to move downward. The positioning hook operation before hanging can be achieved by hooking the corresponding lifting hook 23 on the corresponding pipe locking and positioning mechanism 24.

[0081] When the double-hook lifting and leveling mechanism 11 is in operation, it will drive the corresponding horizontal suspension shaft 20 to rotate, thereby mobilizing the lifting wire rope 22 wound thereon to operate, thereby achieving the purpose of lowering the lifting hook 23 and realizing the control of the lifting hook 23 in place as needed.

[0082] In any of the above schemes, it is preferred that the pipe locking and positioning mechanism 24 includes two semicircular rigid clamps 25 symmetrically arranged from top to bottom, and the two semicircular rigid clamps 25 cooperate to achieve clamping and covering the outer wall of the large-diameter pipe 4 to be lifted at the current position, and the horizontal sections 2501 on both sides of the lower part of the two semicircular rigid clamps 25 are respectively fixedly connected by alloy ground bolts 26, and a locking nut 27 is screwed on the outer wall of each alloy ground bolt 26, and the two locking nuts 27 at the corresponding positions cooperate to achieve locking and positioning of the horizontal sections 2501 of the two semicircular rigid clamps 25, and a locking alloy chain 28 is installed between the two relatively arranged alloy ground bolts 26, and the two ends of the dual-purpose locking alloy chain 28 are respectively fixedly installed on the outer wall of the central shaft section 29 integrally formed at the top of the alloy ground bolts 26 at the corresponding position.

[0083] The pipe locking and positioning mechanism 24 is installed on the outer wall of the corresponding end of the corresponding large-diameter pipe 4 by manual installation before lifting. Under normal conditions, the alloy ground bolts 26 mainly serve to connect the two semicircular rigid clamps 25; at the same time, after the large-diameter pipe 4 is installed in place, each alloy ground bolt 26 will be drilled into the inside of the pipe foundation to achieve the fastening and positioning of the entire large-diameter pipe 4.

[0084] In addition, in any of the above solutions, preferably, the locking alloy chain 28 provided here has the following functions:

[0085] The first is: when it is necessary to use the corresponding double-hook lifting and leveling mechanism 11 to lift the large-diameter pipe 4 to be laid and installed, the locking alloy chain 28 and the lifting hook 23 at the corresponding position are hooked and used in coordination to realize the lifting operation of the large-diameter pipe 4 to be laid and installed, and serve as a temporary hook.

[0086] The second is: after the large-diameter pipe 4 is placed on the concrete pipe foundation inside the excavated trench 2, the corresponding alloy ground bolts 26 are controlled to be drilled into the concrete pipe foundation and the tensioning effect of the alloy ground bolts 26 at both ends of the locking alloy chain 28 is used to achieve the current locking alloy chain 28 to press down and lock the upper part of the large-diameter pipe 4.

[0087] Third, controlling the degree to which the multiple locking alloy chains 28 are tensioned can achieve reinforcement of the large-diameter pipeline 4 and slight leveling of the two ends.

[0088] Fourthly, each locking alloy chain 28 cooperates with the alloy ground bolts 26 at both ends thereof to realize double fastening of the large diameter pipeline 4, thereby improving the fastening effect.

[0089] The present invention also provides an underground large-diameter pipeline 4 installation and laying construction method implemented by using an underground large-diameter pipeline installation and laying construction system, wherein the underground large-diameter pipeline installation and laying construction system is the underground large-diameter pipeline installation and laying construction system as described above; the underground large-diameter pipeline 4 installation and laying construction method comprises the following steps:

[0090] S1: Leveling the ground 3: Pre-level the ground 3 of the rock and soil according to the pipeline laying design route. In addition, in the process of designing the route, it is necessary to mark the surrounding buildings and underground structures to avoid construction interference;

[0091] S2: Excavation of trench 2: The trench is completed on the flattened road surface according to the preset route. When groundwater is encountered during the excavation of trench 2, precipitation treatment must be carried out first. After precipitation is completed and waiting for 72-96 hours, excavation can continue;

[0092] After the precipitation operation is completed, the purpose of waiting is to allow the inside of the trench to dry to a certain extent to ensure the stability of the foundation.

[0093] S3: Backfill cushion: When excavating close to the bottom of the trench, a soil layer of at least 20 cm must be retained at the bottom of the trench and removed manually. After removal, backfill with plain soil and graded gravel and compact it multiple times to form a gravel cushion;

[0094] S4: Pipeline foundation construction: After the gravel cushion layer is formed, concrete is poured to form a concrete pipeline foundation 30, and the pipeline foundation is waited for to be solidified;

[0095] S5: While waiting for the pipeline foundation to be solidified, corresponding pipeline locking and positioning mechanisms 24 are installed at both ends of each large-diameter pipeline 4 to be laid and installed, respectively, for use;

[0096] Before lifting each large-diameter pipeline, each pipeline locking and positioning mechanism 24 needs to be manually installed in place in sequence. The specific spacing between two pipeline locking and positioning mechanisms 24 is adjusted and controlled according to the lifting requirements and the current length of the pipeline to achieve stable lifting.

[0097] S6: After the pipeline foundation is solidified, an external traction machine is used to pull the underground large-diameter pipeline installation and laying construction system into place;

[0098] S7: The underground large-diameter pipeline installation and laying construction system is started, the pipeline lateral displacement mechanism 1 is controlled to drive the adjustment slider 104 and the lifting and leveling device at the bottom thereof to be in place, the driving clutch unit is controlled to operate and drive the double-hook lifting and leveling mechanisms 11 at both ends to adjust the spacing and lifting and leveling mechanisms 11 to be in place, and then the lifting hooks 23 at the bottom of the double-hook lifting and leveling mechanisms 11 at the corresponding positions are hooked on the corresponding pipeline locking and positioning mechanisms 24;

[0099] When the underground large-diameter pipeline installation and laying construction system is working, it is possible to control the operation of the corresponding components of the entire system to adjust the large-diameter pipeline 4 in the suspended state to move along the horizontal width direction. At the same time, it can move along the laying length direction by following the action of the external traction machine. In addition, the large-diameter pipeline 4 in the suspended state will be controlled to be in a horizontal state or an inclined state according to the laying requirements, so as to achieve the control of the pipeline according to specific needs to achieve accurate pre-adjustment before laying.

[0100] S8: Control the lifting and leveling device to lift and drive the large-diameter pipeline 4 to lift horizontally, and keep it stable after it reaches a certain height;

[0101] S9: Continue to control the external traction machine to pull the underground large-diameter pipeline installation and laying construction system with the large-diameter pipeline 4 suspended thereon to move along the length direction of the dug trench to the position where the laying is required, lower the suspended large-diameter pipeline 4, and sequentially and simultaneously control the horizontal state of the large-diameter pipeline 4 until the large-diameter pipeline 4 is placed flat on the pipeline foundation in the trench after excavation;

[0102] When laying down the large-diameter pipeline 4, the state of the pipeline is pre-adjusted according to the current situation of the pipeline foundation, and the pipeline is laid down smoothly to reduce the difficulty of laying down and laying.

[0103] S10: Repeat the above steps to continue to complete the lifting and laying of the next large-diameter pipe 4, and control the end faces of the adjacent large-diameter pipes 4 to be pressed tightly and pour concrete to fill the gaps, and repeat this process to complete the entire pipeline construction operation inside the excavated trench 2.

[0104] In any of the above schemes, it is preferred that in step S9, after the large-diameter pipe 4 is placed flat on the pipe foundation in the excavated trench, the hook is removed, and then the corresponding alloy ground bolts 26 on each pipe locking and positioning mechanism 24 are drilled into the corresponding pipe foundation by drilling equipment in turn to achieve the clamping and fixing of the large-diameter pipe 4. After the large-diameter pipe 4 is placed on the concrete pipe foundation inside the excavated trench 2, the corresponding alloy ground bolts 26 are controlled to be drilled into the concrete pipe foundation and the tensioning effect of the alloy ground bolts 26 at both ends of the locking alloy chain 28 is used to achieve the current locking alloy chain 28 to press down and lock the upper part of the large-diameter pipe 4.

[0105] The underground large-diameter pipeline installation and laying construction system of the present invention can effectively ensure the lifting and positioning of the large-diameter pipeline 4 when cooperating with the laying of the underground large-diameter pipeline 4. At the same time, it can realize the adjustment along the horizontal width direction, front-to-back direction (in cooperation with the external traction machine) and height direction of the excavated trench 2 during the lifting and positioning. At the same time, the horizontal state of the large-diameter pipeline 4 can be adjusted in the process of lifting and lowering the large-diameter pipeline 4. The multi-directional adjustment effectively ensures the adjustment effect of the entire large-diameter pipeline 4, which is convenient for improving the effect of the subsequent horizontal laying of the pipeline in place; the operation of the double-hook lifting and leveling mechanism 11 configured on the lifting and leveling device arranged in the system can be kept synchronous or asynchronous, and the control of the driving clutch unit can be used to control the large-diameter pipeline 4. The two double-hook lifting and leveling mechanisms 11 at the corresponding two ends are driven to lift the two ends of the large-diameter pipeline 4, so as to control the horizontal effect or inclination amplitude of the entire large-diameter pipeline 4 according to the current installation needs, which can meet the installation needs under a small slope state and ensure the installation effect under multiple working conditions; the pipeline locking and positioning mechanism 24 configured on each large-diameter pipeline 4 can cooperate with the double-hook lifting and leveling mechanism 11 in the corresponding state to achieve hooking cooperation, thereby ensuring the stability of the lifting hook 23 of the entire large-diameter pipeline 4 when hanging, and two lifting hooks 23 are respectively arranged at the corresponding ends of the large-diameter pipelines 4 to better cooperate to prevent the problem of unhooking caused by operation shaking during the lifting process, and the overall lifting safety is higher.

[0106] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. For those skilled in the art, any replacement improvements or changes made to the implementation methods of the present invention fall within the protection scope of the present invention.

[0107] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. Underground large diameter pipeline installation and laying construction system, characterized by: It comprises a horizontally arranged pipeline transverse displacement mechanism, wherein a vertical support and guide mechanism is respectively installed at the bottom of both sides of the pipeline transverse displacement mechanism, and the bottoms of the two vertical support and guide mechanisms are supported on the ground at both sides of the excavated trench; The pipeline transverse displacement mechanism comprises a horizontally arranged installation frame, a horizontal positioning screw is installed in the inner frame of the installation frame, and the two ends of the horizontal positioning screw respectively pass through the through holes on the end surface of the installation frame at corresponding positions through the stepped shaft sections at the ends thereof, and a positioning slider is screwed on the outer side wall of the horizontal positioning screw, and the front and rear sides of the positioning slider are respectively abutted against the inner frame side walls of the installation frame, and a positioning drive component is fixedly installed on the left end of the installation frame, and a lifting and leveling device is fixedly connected to the bottom of the positioning slider, and the bottom of the lifting and leveling device cooperates with the large-diameter pipeline to be laid and installed below it; The lifting and leveling device comprises a horizontal welding box arranged along the length direction of the excavated trench, the top of the middle section of the horizontal welding box is fixed to the bottom of the positioning sliding block, and a double-hook lifting and leveling mechanism is symmetrically installed at the front and rear ends of the horizontal welding box, and the bottoms of the two double-hook lifting and leveling mechanisms are respectively matched with the pipeline locking and positioning mechanisms at the corresponding positions, and the two pipeline locking and positioning mechanisms are both matched with the card sleeves on the corresponding end outer walls of the large-diameter pipeline to be installed and laid, and the inner ends of the two double-hook lifting and leveling mechanisms are connected and matched with the corresponding output ends of the driving clutch unit installed inside the installation bin of the horizontal welding box, and when the driving clutch unit is working, it drives at least one of the double-hook lifting and leveling mechanisms at the corresponding position to be in a working state, and brakes are respectively installed at the corresponding ends of the installation bin, and each of the brakes is used in conjunction with the double-hook lifting and leveling mechanism at the corresponding position and is used to realize the braking of the double-hook lifting and leveling mechanism; The driving clutch unit comprises a dual-output shaft motor fixedly mounted in the middle section of the mounting bin, and a clutch is connected to the motor shafts on the front and rear sides of the dual-output shaft motor through a coupling, and the output end of each clutch is used to drive the dual-hook lifting and leveling mechanism at the corresponding position; The double-hook lifting and leveling mechanism includes a horizontally arranged horizontal suspension shaft, the inner end of the horizontal suspension shaft moves through the brake at the corresponding position and extends into the interior of the installation bin, and the rotation or braking of the horizontal suspension shaft is controlled by the cooperation of the driving clutch unit, the clutch and the brake. Two wire rope drum assemblies are fixedly installed at intervals on the outer wall of the horizontal suspension shaft, and a lifting wire rope is wound on the outer wall of each wire rope drum assembly. A lifting hook is fixedly installed at the bottom of each lifting wire rope, and each lifting hook is used to hook the pipeline locking and positioning mechanism at the corresponding position.

2. The underground large-diameter pipeline installation and laying construction system according to claim 1 is characterized by: The positioning drive component includes a positioning motor frame fixedly installed on the left end of the installation frame, a horizontal positioning motor is fixedly installed inside the positioning motor frame, and the motor shaft of the horizontal positioning motor is connected to the stepped shaft section at the left end of the horizontal positioning screw.

3. The underground large-diameter pipeline installation and laying construction system according to claim 2 is characterized by: The vertical support and guide mechanism includes two lifting cylinders spaced apart and vertically arranged along the front and rear sides of the corresponding ends of the mounting frame, the tops of the piston rods of the two lifting cylinders are respectively mounted on the bottom of the mounting frame, the bottom of the cylinder barrel of each lifting cylinder is respectively fixedly mounted on the top of a horizontal base, and two ground support wheel groups are respectively mounted on the bottom of the horizontal base along the front and rear ends thereof, the bottom of each ground support wheel group is supported on the ground and rotates with the traction of the entire construction system.

4. The underground large-diameter pipeline installation and laying construction system according to claim 3 is characterized by: A mounting seat fixedly installed in the mounting bin is also provided between the clutch and the double-hook lifting and leveling mechanism at the corresponding position. Two horizontally arranged telescopic electric cylinders are fixedly installed at intervals between the two mounting seats. The inner ends of the two telescopic electric cylinders are connected to the output end of the clutch through internal connecting seats, respectively. The ends of the piston rods of the two telescopic electric cylinders are movably passed through the mounting seats at the corresponding positions and are connected to the ends of the double-hook lifting and leveling mechanism passing through the brake fixedly installed at the corresponding positions through external connecting seats. The spacing between the two double-hook lifting and leveling mechanisms is adjusted by controlling the extension and retraction of the telescopic electric cylinders at both ends, thereby realizing the adjustment of the stability of the currently lifted large-diameter pipeline.

5. The underground large-diameter pipeline installation and laying construction method implemented by using the underground large-diameter pipeline installation and laying construction system is characterized by: The underground large-diameter pipeline installation and laying construction system is the underground large-diameter pipeline installation and laying construction system as claimed in claim 4; the underground large-diameter pipeline installation and laying construction method comprises the following steps: S1: Ground leveling: Pre-level the ground according to the pipeline laying design route. In addition, in the process of designing the route, it is necessary to mark the surrounding buildings and underground structures to avoid construction interference; S2: Trench excavation: trenching is completed on the flattened road surface according to the preset route. When encountering groundwater during trench excavation, precipitation treatment must be carried out first. After precipitation is completed and waiting for 72-96 hours, excavation can continue; S3: Backfill cushion: When excavating close to the bottom of the trench, a soil layer of at least 20 cm must be retained at the bottom of the trench and removed manually. After removal, backfill with plain soil and graded gravel and compact it multiple times to form a gravel cushion; S4: Pipeline foundation construction: After the gravel cushion is formed, concrete is poured to form a concrete pipeline foundation, and the pipeline foundation is waited for to solidify and take shape; S5: While waiting for the pipeline foundation to be solidified, corresponding pipeline locking and positioning mechanisms are installed at both ends of each large-diameter pipeline to be laid and installed respectively for standby use; S6: After the pipeline foundation is solidified, an external traction machine is used to pull the underground large-diameter pipeline installation and laying construction system into place; S7: The underground large-diameter pipeline installation and laying construction system is started, the pipeline lateral displacement mechanism is controlled to drive the adjustment slider and the lifting and leveling device at the bottom to be in place, the clutch unit is controlled to operate and drive the double-hook lifting and leveling mechanisms at both ends to adjust the spacing and lifting and leveling mechanisms to be in place, and then the lifting hooks at the bottom of the double-hook lifting and leveling mechanisms at the corresponding positions are hooked on the corresponding pipeline locking and positioning mechanisms; S8: Control the lifting and leveling device to lift and drive the large-diameter pipeline to lift horizontally, and keep it stable after it reaches a certain height; S9: Continue to control the external traction machine to pull the underground large-diameter pipeline installation and laying construction system with the large-diameter pipeline suspended thereon to move along the length direction of the dug trench to the position where the laying is required, lower the suspended large-diameter pipeline, and control the horizontal state of the large-diameter pipeline in sequence and at the same time until the large-diameter pipeline is laid flat on the pipeline foundation in the trench after excavation; S10: Repeat the above steps to continue to complete the lifting and laying of the next large-diameter pipe, and control the adjacent large-diameter pipe end faces to be pressed tightly and pour concrete to fill the gaps, and repeat this process to complete the entire pipeline construction operation inside the excavated trench.

6. The underground large-diameter pipeline installation and laying construction method implemented by using the underground large-diameter pipeline installation and laying construction system according to claim 5 is characterized in that: In step S9, after the large-diameter pipeline is laid flat on the pipeline foundation in the excavated trench, the hook is removed, and then the corresponding alloy ground bolts on each pipeline locking and positioning mechanism are drilled into the corresponding pipeline foundation using drilling equipment in turn to clamp and fix the large-diameter pipeline.

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