A lifting and hoisting system for utility tunnel installation

Abstract

The utility model discloses a kind of lifting and hoisting system for pipe gallery comprehensive pipeline installation, the lifting and hoisting system includes pipeline lifting structure and pipeline hanger structure, pipeline lifting structure includes base, lifting platform, several groups lifting mechanism, pipeline fixed component, several groups lifting mechanism are sequentially connected from top to bottom, pipeline fixed component is set to the top of lifting platform, every group lifting mechanism includes support assembly and hydraulic cylinder, the telescopic rod of hydraulic cylinder is connected with support assembly, one end of support assembly is pivotally connected with base, the other end of support assembly is pivotally connected with lifting platform, pipeline hanger structure includes hanger body and pipeline fastening mechanism, the top end of hanger body is installed in pipe gallery concrete roof, pipeline fastening mechanism is detachably installed on hanger body.The utility model uses hydraulic cylinder to lift lifting platform, ensure the stability of lifting process, setting pipeline fixed component on lifting platform, prevent sliding or overturning during lifting process.

Description

Technical Field

[0001] This utility model relates to the field of pipeline installation and construction technology in utility tunnels, specifically to a lifting and hoisting system for hoisting equipment used in the equipment floor of a building. Background Technology

[0002] With the booming economy and the rapid development of urban construction, large exhibition halls and conference centers, as landmark buildings of the city, have become an important force driving urban progress. The installation of electromechanical pipelines in straight pipe corridors, as an indispensable infrastructure of these large buildings, carries the core task of integrated electromechanical pipelines, and its importance is self-evident.

[0003] In integrated pipeline installation projects in utility tunnels, it is typically necessary to install a large number of drainage pipes, fire-fighting pipes, air conditioning water pipes, cables, and other conduits at high altitudes. Currently, pipeline hoisting often employs simple lifting equipment (such as manual hoists or small winches) in conjunction with temporary supports. However, existing pipeline hoisting methods have the following shortcomings:

[0004] 1) Existing lifting equipment is mostly single-point force-bearing. During the lifting process, the pipeline is prone to shaking and tilting, and may also collide with other structures in the pipe gallery, resulting in pipeline damage or safety hazards.

[0005] 2) Temporary fixing often uses steel wire rope binding, which can easily scratch the outer wall of the pipe due to the high rigidity of the steel wire rope, and the tension is difficult to control, resulting in a high risk of loosening.

[0006] 3) Traditional pipe gallery hangers are mostly fixed-size structures, and the connection position between the lifting crossbar and the column is not adjustable. They cannot be flexibly adjusted according to the spacing and height of the pipelines. When adapting to different specifications of pipelines, they need to be reprocessed, which increases construction costs and extends the construction period. Utility Model Content

[0007] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a lifting and hoisting system that uses a hydraulic cylinder to lift the platform, ensures the stability of the lifting process, and sets up pipe fixing components on the lifting platform to firmly fix the pipes during the lifting process, preventing them from sliding or overturning. This system can realize lifting and hoisting operations during the installation of pipelines in pipe corridors, significantly improving construction efficiency and hoisting quality.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A lifting and hoisting system for integrated pipeline installation in a utility tunnel includes a pipeline lifting structure and a pipeline hanger structure installed below the concrete roof slab of the utility tunnel. The pipeline lifting structure includes a base, a lifting platform, several sets of lifting mechanisms, and pipeline fixing components. The several sets of lifting mechanisms are connected sequentially from top to bottom and are located between the base and the lifting platform. The pipeline fixing components are located above the lifting platform for fixing the pipeline to be installed.

[0010] Each lifting mechanism includes a support assembly and a hydraulic cylinder. The telescopic rod of the hydraulic cylinder is connected to the support assembly to drive the support assembly to move. One end of the support assembly is pivotally connected to the base, and the other end of the support assembly is pivotally connected to the lifting platform.

[0011] The pipe hanger structure includes a hanger body and a pipe fastening mechanism. The top of the hanger body is installed on the concrete roof of the pipe gallery to hoist the pipe to be installed. The pipe fastening mechanism is detachably installed on the hanger body.

[0012] Furthermore, the hanger body includes a lifting column, a lifting beam, and a beam fixing device. The top of the lifting column is installed on the concrete roof of the pipe gallery. The left and right ends of the lifting beam are adjustablely installed on the lower end of the lifting column through the beam fixing device. The pipe fastening mechanism is detachably installed on the lifting beam for fixing the pipe.

[0013] Furthermore, the beam fixing device includes beam fastening bolts and beam fastening nuts. The hoisting column is provided with several vertically arranged threaded holes. The end of the hoisting beam is provided with movable holes that match the beam fastening bolts. The beam fastening bolts pass through the movable holes of the hoisting beam and the threaded holes of the hoisting column in sequence and are then locked by the beam fastening nuts to achieve the adjustment of the height of the hoisting beam.

[0014] Furthermore, the pipe fixing component includes a polyester binding strap and a ratchet tensioner. After the polyester binding strap is wrapped around the pipe to be installed, its end is locked by the ratchet tensioner so that the pipe to be installed is fixed on the lifting platform.

[0015] Furthermore, the support assembly includes a first support arm and a second support arm that are pivotally connected, and the telescopic rod of the hydraulic cylinder is connected to the first support arm of the lifting mechanism.

[0016] Furthermore, a traveling wheel is fixed to the lower end face of the base, and a braking device is installed on the traveling wheel.

[0017] Furthermore, the pipe fixing component includes several wooden supports, which are spaced apart on the lifting platform to support the pipe to be installed.

[0018] Furthermore, the pipe fastening mechanism includes a U-shaped clamp, a clamp bolt, and a clamp nut. The clamp bolt passes through both ends of the U-shaped clamp and the lifting beam, and is locked onto the lifting beam by the clamp nut.

[0019] Furthermore, the top of the hoisting column is provided with a column base and expansion bolts. The column base is welded to the top of the hoisting column, and the column base at the top of the hoisting column is fixed to the concrete roof of the pipe gallery by expansion bolts.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1) The lifting and hoisting system of this utility model includes a pipeline lifting structure and a pipeline hanger structure installed below the concrete roof slab of the pipe gallery. The pipeline lifting structure includes a base, a lifting platform, several sets of lifting mechanisms, and pipeline fixing components. The several sets of lifting mechanisms are connected sequentially from top to bottom and are located between the base and the lifting platform. The pipeline fixing components are located above the lifting platform. Each set of lifting mechanisms includes a support component and a hydraulic cylinder. The telescopic rod of the hydraulic cylinder is connected to the support component to drive the support component to move. One end of the support component is pivotally connected to the base, and the other end of the support component is pivotally connected to the lifting platform. The pipeline hanger structure includes a hanger body and a pipeline fastening mechanism. The top of the hanger body is installed on the concrete roof slab of the pipe gallery to hoist the pipeline to be installed. The pipeline fastening mechanism is detachably installed on the hanger body. This utility model uses a hydraulic cylinder to lift the lifting platform to ensure the stability of the lifting process. Pipeline fixing components are set on the lifting platform to firmly fix the pipeline during the lifting process and prevent it from sliding or overturning. This enables lifting and hoisting operations during the installation of pipelines in the pipe gallery, significantly improving construction efficiency and hoisting quality.

[0022] 2) The pipe fixing component of this utility model adopts polyester binding straps and ratchet tensioners. After wrapping around the pipe to be installed, the ratchet structure enables quick locking and releasing, preventing the pipe from shaking during the lifting process. The polyester binding straps are highly flexible and strong, which can not only avoid scratching the outer wall of the pipe, but also precisely control the tension through the ratchet tensioner, significantly improving the fixing reliability, and the disassembly and assembly operations are simple. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the lifting and hoisting system of this utility model;

[0024] Figure 2 This is a schematic diagram showing the relationship between the pipe lifting structure and the pipe fixing components in Embodiment 1 of this utility model;

[0025] Figure 3 This is a schematic diagram of the pipe fixing component on the lifting platform fixing the pipe to be installed according to Embodiment 1 of this utility model;

[0026] Figure 4 This is a schematic diagram showing the relationship between the lifting platform and the wooden support in Embodiment 1 of this utility model;

[0027] Figure 5 This is a schematic diagram showing the relationship between the pipe hanger structure of this utility model and the concrete roof slab of the pipe gallery;

[0028] Figure 6 This is a schematic diagram of the pipe fastening mechanism of this utility model;

[0029] Figure 7 This is a side view of the connection between the hoisting column, the hoisting beam, and the beam fixing device of this utility model.

[0030] Figure 8 This is a front view of the pipe lifting structure and pipe fixing components according to Embodiment 2 of this utility model;

[0031] Figure 9 This is a side view of the pipe lifting structure and pipe fixing components according to Embodiment 2 of this utility model.

[0032] In the diagram, the components include: pipe lifting structure 1, base 11, lifting platform 12, lifting mechanism 13, support assembly 131, first support arm 1311, second support arm 1312, hydraulic cylinder 132, traveling wheel 14, pipe fixing component 2, polyester binding strap 21, ratchet tensioner 22, wooden support 23, pipe limiting component 24, limiting fixing seat 241, limiting connecting bolt 242, first limiting plate 243, pipe tightening component 25, tightening base 251, lead screw 252, and nut 25. 3. Second limiting plate 254. Pipe hanger structure 3. Hanger body 31. Lifting column 311. Threaded hole 3111. Lifting crossbeam 312. Moving hole 3121. Crossbeam fixing device 313. Crossbeam fastening bolt 3131. Crossbeam fastening nut 3132. Pipe fastening mechanism 32. U-shaped clamp 321. Clamp bolt 322. Clamp nut 323. Column base 33. Expansion bolt 34. Fixed pipe to be installed 4. Installed pipe 5. Concrete roof of pipe gallery 6. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] like Figures 1-4As shown, Embodiment 1 of this utility model provides a lifting and hoisting system for integrated pipeline installation in a utility tunnel. This lifting and hoisting system includes a pipeline lifting structure 1 and a pipeline hanger structure 3 installed below the concrete roof slab 6 of the utility tunnel. The pipeline lifting structure 1 includes a base 11, a lifting platform 12, several sets of lifting mechanisms 13, and a pipeline fixing component 2. The several sets of lifting mechanisms 13 are connected sequentially from top to bottom and are positioned between the base 11 and the lifting platform 12. The pipeline fixing component 2 is positioned above the lifting platform 12 for fixing the pipeline 4 to be installed. Each lifting mechanism 13 includes a support component 131 and a hydraulic cylinder 132. The hydraulic cylinder 132 extends and retracts... The rod is connected to the support assembly 131 to drive the support assembly 131 to move. One end of the support assembly 131 is pivotally connected to the base 11, and the other end of the support assembly 131 is pivotally connected to the lifting platform 12. Specifically, one end of the support assembly 131 of the lifting mechanism 13 located at the top of the base 11 is pivotally connected to the base 11, and the support assembly 131 of the lifting mechanism 13 located at the bottom of the lifting platform 12 is pivotally connected to the lifting platform 12. The pipe hanger structure 3 includes a hanger body 31 and a pipe fastening mechanism 32. The top end of the hanger body 31 is installed on the concrete roof slab 6 of the pipe gallery to hoist the pipe 4 to be installed. The pipe fastening mechanism 32 is detachably installed on the hanger body 31. This utility model uses a hydraulic cylinder 132 to drive the support assembly 131 to move, so as to realize the smooth lifting and lowering of the pipeline on the lifting platform 12. It has high adjustment accuracy, strong load-bearing capacity, avoids the safety hazards of manual operation, and greatly reduces labor intensity and safety hazards. The lifting platform 12 is stable. By setting the pipeline fixing component 2 on the lifting platform 12, the pipeline to be installed 4 can be firmly fixed during the lifting process to prevent it from sliding or overturning. A detachable pipeline fastening mechanism 32 is set on the hanger body 31 to adapt to pipelines of different diameters. The lifting and hoisting system set by this utility model can realize the lifting and hoisting operation during the pipeline installation process in the pipe gallery, significantly improving construction efficiency and hoisting quality, and has broad practical value.

[0035] In the utility model embodiment, the lifting mechanism 13 is provided in three groups, namely the first lifting mechanism 13, the second lifting mechanism 13, and the third lifting mechanism 13, which are hinged together from top to bottom.

[0036] In practice, the base 11 of the pipeline lifting structure 1 is welded from Q235 steel plate and has a rectangular plate structure. The lifting platform 12 is a rectangular frame structure, which is spliced ​​from aluminum alloy profiles. It is lightweight and has high strength. The two are set in parallel. The extension and retraction of the telescopic rod is driven by the hydraulic cylinder 132, which drives the support component 131 to open and close, thereby realizing the lifting of the lifting platform 12.

[0037] The support assembly 131 of this utility model includes a first support arm 1311 and a second support arm 1312 that are pivotally connected. The telescopic rod of the hydraulic cylinder 132 is connected to the first support arm 1311 of the lifting mechanism 13. In specific implementation, the first support arms 1311 of two adjacent sets of lifting mechanisms 13 are hinged together, and the second support arms 1312 of two adjacent sets of lifting mechanisms 13 are connected together. The first support arm 1311 of the lowermost lifting mechanism 13 is hinged to the base 11, and the second support arm 1312 of the lowermost lifting mechanism 13 is pivotally connected to the base 11. The first support arm 1311 of the uppermost lifting mechanism 13 is pivotally connected to the lifting platform 12, and the second support arm 1312 of the uppermost lifting mechanism 13 is pivotally connected to the lifting platform 12. In a specific implementation, a through hole can be provided at the midpoint of the first support arm 1311 and the second support arm 1312, and a bushing can be inserted through the through hole and a connecting shaft can be inserted through the bushing to realize the pivot connection between the first support arm 1311 and the second support arm 1312.

[0038] The present invention has a traveling wheel 14 fixed on the lower end face of the base 11, and a braking device is installed on the traveling wheel 14.

[0039] In practice, the pipe fixing component 2 includes several wooden supports 23, which are spaced apart on the lifting platform 12 to support the pipe 4 to be installed. The size of the wooden supports 23 is adapted to the diameter of the pipe 4 to be installed. The arc-shaped structure of the wooden supports 23 corresponding to different pipe diameters fits the outer wall of the pipe 4 to be installed, and the thickness of the wooden supports 23 is 5cm.

[0040] like Figures 5-7As shown, the hanger body 31 of this utility model includes a lifting column 311, a lifting beam 312, and a beam fixing device 313. The top of the lifting column 311 is installed on the concrete roof slab 6 of the pipe gallery. The left and right ends of the lifting beam 312 are adjustablely installed on the lower end of the lifting column 311 through the beam fixing device 313. The pipe fastening mechanism 32 is detachably installed on the lifting beam 312 for fixing the pipe. The lifting beam 312, with the beam fixing device 313, is easy to install and operate, and can meet the needs of different heights of the lifting beam 312 on the lifting column 311. The mechanical connection method ensures reliable fastening and can withstand the self-weight of the pipe and external loads for a long time, ensuring the safe operation of the pipe gallery. The beam fixing device 313 includes a beam fastening bolt 3131 and a beam fastening nut 3132. The hoisting column 311 is provided with several vertically arranged threaded holes 3111. The end of the hoisting beam 312 is provided with a movable hole 3121 that matches the beam fastening bolt 3131. The beam fastening bolt 3131 passes through the movable hole 3121 of the hoisting beam 312 and the threaded hole 3111 of the hoisting column 311 in sequence and is then locked by the beam fastening nut 3132 to realize the adjustment of the height of the hoisting beam 312. In practice, the hoisting column 311 is made of Φ89mm seamless steel pipe. The crossbeam fixing device 313 includes M10 crossbeam fastening bolts 3131 and crossbeam fastening nuts 3132. The end of the hoisting crossbeam 312 has an elongated movable hole 3121. During installation, a suitable threaded hole 3111 is selected according to the pipe design height. The crossbeam fastening bolt 3131 is then passed through the movable hole 3121 and the selected threaded hole 3111 in sequence, and the crossbeam fastening nut 3132 is tightened to achieve fixation. The adjustment accuracy can reach 100mm. The use of threaded holes 3111 and crossbeam fastening bolts 3131 for screw connection is simple to operate, highly stable, and facilitates the installation of the hoisting column 311 and the hoisting crossbeam 312. Furthermore, the movable hole 3121 and the crossbeam fastening bolt 3131 are matched, and after being moved to the desired position, they are fixed by bolt connection. This method is simple, practical, and highly stable. This utility model provides threaded holes 3111 inside the hoisting column 311 and bolt movable holes 3121 on the hoisting beam 312. By selecting threaded holes 3111 at different heights on the hoisting column 311, the installation height of the hoisting beam 312 can be flexibly adjusted to adapt to different pipeline hoisting layout requirements and accommodate different pipeline height requirements. This eliminates the need to reprocess the pipeline hanger structure 3, significantly improving the practicality of the pipeline hanger structure 3.

[0041] In this embodiment of the invention, the pipe fixing component 2 includes two polyester binding straps 21 and a ratchet tensioner 22. The two polyester binding straps 21 are symmetrically arranged on both sides of the upper end face of the lifting platform 12. After the polyester binding straps 21 are wrapped around the pipe 4 to be installed, their ends are locked by the ratchet tensioner 22 so that the pipe 4 to be installed is fixed on the lifting platform 12. Specifically, the two polyester binding straps 21 are symmetrically arranged on both sides of the upper end face of the lifting platform 12 (150mm from the edge). Each polyester binding strap 21 corresponds to one ratchet tensioner 22. In use, the polyester binding straps 21 are wrapped around the outer wall of the pipe 4 to be installed, and both ends are connected to the input end of the ratchet tensioner 22. By rotating the handle of the ratchet tensioner 22, the polyester binding straps 21 are tightened, and the pipe is firmly fixed on the lifting platform 12. The pipe fixing component 2 of this utility model uses a polyester binding strap 21 and a ratchet tensioner 22. The ratchet tensioner 22 tightens the binding strap, which is simple to operate and has a strong binding force, and is suitable for pipes of different diameters. The selected polyester binding strap 21 is 50mm wide and has the characteristics of wear resistance and high strength. After being wrapped around the pipe 4 to be installed, it is quickly locked and released through the ratchet structure, which prevents the pipe from shaking during the lifting process. The polyester binding strap 21 is highly flexible and strong, which can not only avoid scratching the outer wall of the pipe, but also allows for precise control of the tension force through the ratchet tensioner 22, which significantly improves the fixing reliability. Moreover, the disassembly and assembly are simple and can be completed by a single person.

[0042] In a specific implementation, the pipe fastening mechanism 32 of this utility model includes a U-shaped clamp 321, a clamp bolt 322, and a clamp nut 323. The clamp bolt 322 passes through both ends of the U-shaped clamp 321 and the hoisting beam 312 and is locked onto the hoisting beam 312 by the clamp nut 323. The opening of the U-shaped clamp 321 faces the pipe, and bolt holes are provided at both ends. The clamp bolt 322 passes through the bolt holes and connects with the lifting beam 312, and then screws into the clamp nut 323 to fix the pipe. The clamp bolt 322 and clamp nut 323 are used to fix the U-shaped clamp 321. During installation, the pipe fastening mechanism 32 first lifts the horizontal position of the pipe to be installed 4 to the hanger body 31 through the lifting platform 12, aligns the pipe opening of the pipe to be installed 4 with the pipe opening of the already installed pipe 5, and then installs the U-shaped clamp 321. The U-shaped clamp 321 achieves the connection and fixation between pipes and can play a very good fastening role. Only tightening the U-shaped clamp nut 323 is required to complete the fastening. The operation steps are few, the fastening method is simple, and it is convenient to operate. The U-shaped clamp can fit tightly to the pipe opening, ensuring the sealing and connection strength. The U-shaped clamp 321 is made of 8mm thick steel plate and its inner surface is pasted with a rubber pad to protect the outer surface of the pipe.

[0043] This utility model features a column base 33 welded to the top of the hoisting column 311. The column base 33 is fixed to the concrete roof slab 6 of the pipe rack using expansion bolts 34. The top of the hoisting column 311 has a square column base 33 measuring 150×150×10mm, with four mounting holes. It is fixed to the concrete roof slab 6 of the pipe rack using M12 expansion bolts 34. The hanger structure is connected to the concrete roof slab 6 of the pipe rack via expansion bolts 34, resulting in strong overall rigidity and ensuring the stability of the pipe after hoisting. The column base 33 increases the contact area between the top of the hoisting column 311 and the concrete roof slab 6 of the pipe rack, further enhancing the stability of the pipe hanger structure 3.

[0044] The operation procedure for installing pipelines using this utility model's lifting and hoisting system is as follows:

[0045] Step 1) Pre-installation of the hanger body 31: According to the design location of the pipeline in the pipe gallery, mark the fixing points of the hoisting column 311 on the concrete top slab 6 of the pipe gallery. Fix the column base 33 of the hoisting column 311 to the concrete top slab 6 of the pipe gallery with the crossbeam fastening bolts 3131. Then install the hoisting crossbeam 312 between the two hoisting columns 311 through the crossbeam fixing device 313. Adjust the height and horizontal position of the hoisting crossbeam 312 to the design value and tighten the crossbeam fastening nut 3132.

[0046] Step 2) Pipe fixing and lifting preparation: Place the pipe 4 to be installed on the lifting platform 12 of the pipe lifting structure 1, use the polyester binding strap 21 of the pipe fixing component 2 to wrap around the pipe, and tighten the binding strap through the ratchet tensioner 22;

[0047] Step 3) Pipe positioning and lifting: Start the hydraulic cylinder 132 to drive the support component 131 to unfold, and drive the lifting platform 12 to slowly rise to the design height. During the lifting process, first move slowly to keep the horizontal distance between the pipe to be installed 4 and the pipe 5 already installed on the pipe hanger structure 3 at 10cm, and the axes of the two are in the same straight line. During the lifting process, the operator observes in real time whether the pipe collides with the pipe gallery structure or the installed pipe 5. If a collision occurs, stop the lifting and adjust the position.

[0048] Step 4) Pipe Connection and Fastening: When the pipe opening of the pipe to be installed 4 is flush with the pipe opening of the pipe already installed 5, pause the lifting and lowering process. Adjust the position of the pipe lifting structure 1 by fine-tuning (achieved through the braking device on the universal wheel at the bottom of the pipe lifting structure 1) to make the two pipe openings completely aligned. Place the U-shaped clamp 321 on the outside of the pipe opening, pass the clamp bolt 322 through the U-shaped clamp 321 and the hoisting beam 312, tighten the clamp nut 323, and complete the pipe connection and fixing.

[0049] Step 5) Reset the pipe lifting structure 1: Loosen the ratchet tensioner 22 and the polyester binding strap 21, move the pipe lifting structure 1 to the next construction position, and repeat the above steps to complete the subsequent pipe installation.

[0050] like Figures 8-9 As shown, Embodiment 2 of this utility model provides a lifting and hoisting system for integrated pipeline installation in a utility tunnel. The lifting and hoisting system includes a pipeline lifting structure 1 and a pipeline hanger structure 3 installed below the concrete roof slab 6 of the utility tunnel. The pipeline lifting structure 1 includes a base 11, a lifting platform 12, several sets of lifting mechanisms 13, and a pipeline fixing component 2. The structure and connection method of the base 11, lifting platform 12, and several sets of lifting mechanisms 13 in the pipeline lifting structure 1 provided in Embodiment 2 of this utility model are the same as those in Embodiment 1. To save space, the following description mainly focuses on the pipeline fixing component 2, which has a different structure from that in Embodiment 1.

[0051] In this second embodiment of the utility model, the pipe fixing component 2 is fixed above the lifting platform 12 for limiting and tightening the pipe 4 to be installed. The pipe fixing component 2 includes a pipe limiting component 24 and a pipe tightening component 25. The pipe limiting component 24 and the pipe tightening component 25 are symmetrically fixed above the lifting platform 12, and a receiving area for storing the pipe 4 to be installed is formed between the pipe limiting component 24 and the pipe tightening component 25. The pipe limiting component 24 includes a limiting fixing seat 241, a limiting connecting bolt 242, and a first limiting plate 243. The limiting fixing seat 241 is configured with an L-shaped structure. The short side of the limiting fixing seat 241 is fixed to one side above the lifting platform 12 by the limiting connecting bolt 242. The first limiting plate 243 is fixed to the limiting fixing seat. The long side of 241; the pipe clamping component 25 includes a clamping base 251, a lead screw 252, a nut 253, and a second limiting plate 254. The lead screw 252 is rotatably mounted on the clamping base 251. The nut 253 is fixed on the clamping base 251 and threadedly connected to the lead screw 252. The second limiting plate 254 is fixed to the end of the lead screw 252 and is opposite to the first limiting plate 243 of the pipe limiting component 24. Rotation of the lead screw 252 can drive the nut 253 to move along the axial direction of the lead screw 252, thereby driving the second limiting plate 254 to move towards the pipe to be installed 4 and the first limiting plate 243, so that the second limiting plate 254 and the first limiting plate 243 cooperate to limit and clamp the pipe to be installed 4.

[0052] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A lifting and hoisting system for integrated pipeline installation in utility tunnels, characterized in that: The lifting and hoisting system includes a pipe lifting structure and a pipe hanger structure installed below the concrete roof of the pipe gallery. The pipe lifting structure includes a base, a lifting platform, several sets of lifting mechanisms, and pipe fixing components. The several sets of lifting mechanisms are connected sequentially from top to bottom and are located between the base and the lifting platform. The pipe fixing components are located above the lifting platform for fixing the pipe to be installed. Each lifting mechanism includes a support assembly and a hydraulic cylinder. The telescopic rod of the hydraulic cylinder is connected to the support assembly to drive the support assembly to move. One end of the support assembly is pivotally connected to the base, and the other end of the support assembly is pivotally connected to the lifting platform. The pipe hanger structure includes a hanger body and a pipe fastening mechanism. The top of the hanger body is installed on the concrete roof of the pipe gallery to hoist the pipe to be installed. The pipe fastening mechanism is detachably installed on the hanger body.

2. The lifting and hoisting system for integrated pipeline installation in utility tunnels according to claim 1, characterized in that: The main body of the hanger includes a lifting column, a lifting beam, and a beam fixing device. The top of the lifting column is installed on the concrete roof of the pipe gallery. The left and right ends of the lifting beam are adjustablely installed on the lower end of the lifting column through the beam fixing device. The pipe fastening mechanism is detachably installed on the lifting beam for fixing the pipe.

3. The lifting and hoisting system for integrated pipeline installation in utility tunnels according to claim 1, characterized in that: The beam fixing device includes beam fastening bolts and beam fastening nuts. The hoisting column is provided with several vertically arranged threaded holes. The end of the hoisting beam is provided with movable holes that match the beam fastening bolts. The beam fastening bolts pass through the movable holes of the hoisting beam and the threaded holes of the hoisting column in sequence and are then locked by the beam fastening nuts to achieve the adjustment of the height of the hoisting beam.

4. The lifting and hoisting system for integrated pipeline installation in utility tunnels according to claim 1, characterized in that: The pipe fixing component includes two polyester binding straps and a ratchet tensioner. The two polyester binding straps are symmetrically arranged on both sides of the upper surface of the lifting platform. After the polyester binding straps are wrapped around the pipe to be installed, their ends are locked by the ratchet tensioner so that the pipe to be installed is fixed on the lifting platform.

5. The lifting and hoisting system for integrated pipeline installation in utility tunnels according to claim 1, characterized in that: The support assembly includes a first support arm and a second support arm that are pivotally connected, and the telescopic rod of the hydraulic cylinder is connected to the first support arm of the lifting mechanism.

6. The lifting and hoisting system for integrated pipeline installation in utility tunnels according to claim 1, characterized in that: The lower end face of the base is fixed with a walking wheel.

7. The lifting and hoisting system for integrated pipeline installation in utility tunnels according to claim 4, characterized in that: The pipe fixing components include several wooden supports, which are spaced apart on the lifting platform to support the pipe to be installed.

8. The lifting and hoisting system for integrated pipeline installation in utility tunnels according to claim 1, characterized in that: The pipe fastening mechanism includes a U-shaped clamp, clamp bolts, and clamp nuts. The clamp bolts pass through both ends of the U-shaped clamp and the lifting beam, and are locked onto the lifting beam by the clamp nuts.

9. The lifting and hoisting system for integrated pipeline installation in utility tunnels according to claim 2, characterized in that: The top of the hoisting column is provided with a column base and expansion bolts. The column base is welded to the top of the hoisting column, and the column base at the top of the hoisting column is fixed to the concrete roof of the pipe gallery by expansion bolts.

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