Segmented lifting assembly device and method for upper pipe installation

Abstract

The present invention discloses a segmented lifting assembly device and method for installing a pipeline. The segmented lifting assembly device comprises at least two groups of lifting work platforms, each group of lifting work platforms comprises a connecting top plate (1), a transmission assembly (2), a column (3), a lifting crossarm (4), a lifting crossarm (5) and a connecting piece (6); the lifting end of the transmission assembly is connected to the end of the lifting crossarm, so that the lifting crossarm is lifted up and down along a transmission groove (31) through the transmission assembly in a pair of columns, and the pipeline (8) is suspended below the lifting crossarm; the lifting end of the transmission assembly is connected to the end of the lifting crossarm, so that the lifting crossarm is lifted up and down along the transmission groove through the transmission assembly, the lifting crossarm is higher than the ground, and the pipeline is placed on the lifting crossarm. The present invention adopts an assembly method of three operation stages and two liftings, transfers a large amount of high-altitude work to the ground, is conducive to improving the efficiency and quality of pipeline installation, and is suitable for assembly operations of various electromechanical pipelines.

Description

Technical Field

[0001] The present invention relates to a pipeline installation device and method, and in particular to a segmented lifting assembly device and method for upper installation of pipelines. Background Art

[0002] During the construction of buildings and indoor facilities, the assembly of electromechanical (EM) piping is a common process. Pipeline assembly includes rust removal, cutting, machining, boring, connecting branch pipes, butting pipes, connecting pipe fittings and accessories, painting, hoisting, installing pipe clamps, insulation, and the general installation of components such as bevels, flanges, and grooves. While the assembly process for above-ground or underground piping is relatively straightforward, elevated piping requires extensive hoisting and overhead work. Due to the large size, wide spans, and heavy weight of EEM piping, this task presents significant challenges and operational risks. Summary of the Invention

[0003] The purpose of the present invention is to provide a segmented lifting assembly device and method for upper pipe installation, which adopts an assembly method with three operation stages and two liftings, transferring a large amount of high-altitude work to the ground, which is beneficial to improving the efficiency and quality of pipeline upper installation and is suitable for the assembly operations of various electromechanical pipelines.

[0004] The present invention is achieved in that:

[0005] The lifting mechanism is a kind of lifting and lowering device of the present invention, and its lifting effect is excellent.

[0006] Each group of transmission components includes a transmission member, a lifting chain, a lifting piston and a lifting piston; the upper end of the lifting chain is connected to the transmission member, the lower end of the lifting chain is connected to the lifting piston, and the lifting piston is electrically connected to the transmission member; crossarm sockets are formed in the lifting piston and the lifting piston, so that the end of the lifting crossarm can be inserted into the lifting piston through the crossarm socket, and the end of the lifting crossarm can be inserted into the lifting piston through the crossarm socket.

[0007] The bottom of the lifting piston is formed with a slot, and the top of the jacking piston is formed with a socket. The slot and the socket are matched and plugged together, so that the lifting piston can be coaxially arranged on the top of the jacking piston.

[0008] Scale lines are formed on the outer wall of the column along the length direction of the column, and a limiting piece is provided on the top of the transmission groove, and the limiting piece is located below the bottom of the transmission assembly.

[0009] A plurality of loading and unloading holes are formed at intervals on the other side of the column, and the loading and unloading holes are communicated with the transmission groove.

[0010] The bottom of each column is sleeved with an anti-skid base.

[0011] The middle of the lifting crossarm is formed with a clamp groove, and the lower part of the inverted U-shaped clamp is installed on the lifting crossarm through the clamp groove, so that the pipeline can be fixed on the lifting crossarm through the upper part of the clamp.

[0012] A segmented lifting assembly method for upper pipe installation includes the following steps:

[0013] Step 1: Install at least two sets of lifting platforms on the structural columns and beams;

[0014] Step 2: Place several sections of pipe on the ground between a pair of columns of a lifting platform. Each section of pipe should have at least two sets of lifting platforms within its length.

[0015] Step 3: Hoist the pipeline under the lifting crossarm and lift the pipeline through the lifting crossarm through the transmission assembly;

[0016] Step 4: Install the lifting crossbar between the pair of columns of each lifting workbench, and the lifting crossbar is located below the pipe;

[0017] Step 5: Use the transmission assembly to lower the pipe onto the lifting crossarm via the lifting crossarm;

[0018] Step 6: Carry out ground assembly of the pipeline, install the assembly frame on the pipeline, and install the assembly plate on the structural beam;

[0019] Step 7: Fix the pipe on the lifting crossarm;

[0020] Step 8: Hoist the pipeline under the lifting crossarm and lift the pipeline through the lifting crossarm through the transmission assembly;

[0021] Step 9: Fix the assembly frame to the assembly plate, assemble the pipes on the structural beam, and complete the assembly connection between the pipes;

[0022] Step 10: Remove all lifting platforms and move to the next work section until all pipe top assembly is completed.

[0023] In the step 1, at least two sets of lifting work platforms are installed at intervals along the length direction of the pipe to be assembled, and no lifting cross arm is installed between a pair of columns of the lifting work platform.

[0024] In the step 3, the lifting height of the pipeline is higher than the installation height of the lifting cross arm.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention adopts a segmented construction method with three stages and two hoisting operations, completing most of the pipeline assembly work on the ground, greatly reducing the content and time of aerial work, effectively reducing the incidence of high-altitude work safety accidents, and at the same time, it is also beneficial to improve the construction efficiency and construction quality of pipeline assembly operations, ensuring construction progress.

[0027] 2. The present invention transfers a large amount of aerial work to the ground, reduces the difficulty and workload of pipeline assembly, saves manpower, reduces the waste caused by ineffective installation, and is conducive to the standardization, standardization and industrialization of electromechanical pipeline assembly technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of the lifting work platform in the segmented lifting assembly device for upper pipe installation of the present invention;

[0029] Figure 2 It is a perspective view of the transmission assembly in the segmented lifting assembly device for upper pipe installation of the present invention;

[0030] Figure 3 It is a cross-sectional view of a jacking cross arm in a segmented lifting assembly device for upper pipe installation according to the present invention;

[0031] Figure 4 This is a schematic diagram of the installation of a clamp in a segmented lifting assembly device for upper pipe installation according to the present invention;

[0032] Figure 5 1. It is a construction diagram of step 4 in the segmented lifting assembly method for upper pipe installation of the present invention;

[0033] Figure 61. It is a construction diagram of step 5 in the segmented lifting assembly method for upper pipe installation of the present invention;

[0034] Figure 7 1. It is a construction schematic diagram of step 8 in the segmented lifting assembly method for upper pipe installation of the present invention;

[0035] Figure 8 1. It is a construction schematic diagram of step 9 in the segmented lifting assembly method for upper pipe installation of the present invention;

[0036] Figure 9 yes Figure 8 Enlarged view of the connection between the assembly bracket and the assembly plate.

[0037] In the figure, 1 connects the top plate, 2 transmission assembly, 21 transmission parts, 22 lifting chain, 23 lifting piston, 24 lifting piston, 25 cross arm socket, 26 socket, 3 column, 31 transmission groove, 32 scale line, 33 limit part, 34 loading and unloading hole, 35 anti-slip base, 4 lifting cross arm, 5 lifting cross arm, 6 connecting parts, 7 clamp, 71 clamp slot, 8 pipe, 81 assembly frame, 82 lifting parts, 9 structural column, 10 structural beam, 101 assembly plate. DETAILED DESCRIPTION

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] Please see the attached Figure 1 and attached Figure 7A segmented lifting assembly device for installing pipes includes at least two sets of lifting work platforms, each of which includes a connecting top plate 1, a transmission assembly 2, a column 3, a lifting cross arm 4, a lifting cross arm 5 and a connecting piece 6; the column 3 is vertically arranged on the ground and is located next to the structural column 9, the connecting piece 6 is installed on the top of the column 3, and the connecting piece 6 is fixed to the structural beam 10 by connecting the top plate 1; the transmission assembly 2 is arranged in the connecting piece 6 and the column 3, and a transmission groove 31 is formed on one side of the column 3 along the length direction of the column 3; the two ends of the lifting cross arm 5 are respectively Inserted into the transmission slots 31 of the pair of columns 3, the lifting end of the transmission assembly 2 is connected to the end of the lifting crossarm 5, allowing the lifting crossarm 5 to be raised and lowered along the transmission slots 31 via the transmission assembly 2 within the pair of columns 3, allowing the pipeline 8 to be hoisted below the lifting crossarm 5. The two ends of the connecting member 6 are respectively inserted into the transmission slots 31 of the pair of columns 3, and the lifting end of the transmission assembly 2 is connected to the end of the lifting crossarm 4, allowing the lifting crossarm 4 to be raised and lowered along the transmission slots 31 via the transmission assembly 2 within the pair of columns 3. The lifting crossarm 4 is slightly above the ground, allowing the pipeline 8 to rest on the lifting crossarm 4. When the pipeline 8 is placed on the lifting crossarm 4, it can be lifted by the lifting crossarm 4 under the drive of the transmission assembly 2, which also facilitates the assembly of the pipeline 8 on the lifting crossarm 4. This allows the pipeline 8 to be assembled on the ground, reducing the need for high-altitude work, improving work efficiency and quality, and reducing the difficulty and risk of the work. When the pipeline 8 is placed under the lifting crossarm 5, the pipeline 8 can be lifted to the designed height through the lifting crossarm 5 under the drive of the transmission component 2 and the final assembly of the pipeline 8 is completed.

[0040] Preferably, the connecting top plate 1 can be made of a rectangular steel plate and connected and fixed to the structural beam 10 through multiple screw rods and nuts to ensure the setting stability of the column 3, thereby ensuring the stability and safety of the pipeline 8 lifting process.

[0041] Please see the attached Figure 2 Each group of the transmission assembly 2 includes a transmission member 21, a lifting chain 22, a lifting piston 23 (i.e., a lifting end), and a lifting piston 24 (i.e., a lifting end); the upper end of the lifting chain 22 is connected to the transmission member 21, the lower end of the lifting chain 22 is connected to the lifting piston 23, and the lifting piston 24 is electrically connected to the transmission member 21; a crossarm socket 25 is formed in the lifting piston 23 and the lifting piston 24, so that the end of the lifting crossarm 5 can be inserted into the lifting piston 23 through the crossarm socket 25, and the end of the lifting crossarm 4 can be inserted into the lifting piston 24 through the crossarm socket 25. Preferably, the transmission member 21 can be an electric hoist, winch, etc. used in construction projects, and the lifting functions of the lifting chain 22 and the lifting piston 24 can be realized through its actuator, thereby meeting the lifting function of the lifting crossarm 4 and the lifting crossarm 5 on the pipeline 8.

[0042] The bottom of the lifting piston 23 is formed with a slot (not shown in the figure), and the top of the lifting piston 24 is formed with a socket 26. The slot and the socket 26 are matched and plugged into each other, so that the lifting piston 23 can be coaxially arranged on the top of the lifting piston 24. The lifting piston 23 can be separated from the lifting piston 24 when it is working, and can be combined with the lifting piston 24 when it is not working.

[0043] Scale lines 32 are formed along the length of the column 3 on its outer wall. A limiter 33 is provided at the top of the transmission slot 31, located below the bottom of the transmission assembly 2. Scale lines 32 allow for intuitive and precise control of the rise and fall of the pipe 8. Limiter 33 is used to limit the upward travel of the lifting crossarm 5 to ensure safe travel. Limiter 33 can be positioned as needed.

[0044] Several loading and unloading holes 34 are formed at intervals on the other side of the column 3. These holes 34 communicate with the transmission slot 31. Inserting latches into the loading and unloading holes 34 establishes a position-limiting connection between the lifting crossarm 4, the lifting piston 24, and the column 3, preventing the lifting crossarm 4 from accidentally falling. Inserting latches into the loading and unloading holes 34 establishes a position-limiting connection between the lifting crossarm 5, the lifting piston 24, and the column 3, preventing the lifting crossarm 5 from accidentally falling. The number and spacing of the loading and unloading holes 34 can be adjusted according to actual needs.

[0045] The bottom of each column 3 is sleeved with an anti-skid base 35, which can play an anti-skid role, ensure the stable support of the column 3 on the ground, and prevent damage to the ground or the bottom working surface. Preferably, the anti-skid base 35 can be made of rubber material, which has good anti-skid and wear-resistant properties.

[0046] Please see the attached Figure 3 The cross-sections of the lifting cross-arm 4 and the lifting cross-arm 5 are both I-shaped. The lifting cross-arm 4 and the lifting cross-arm 5 can be made of vertically symmetrical and bilaterally symmetrical steel beams to ensure uniform force on the lifting cross-arm 4 and the lifting cross-arm 5 and prevent deformation and other problems during the lifting process.

[0047] Please see the attached Figure 3 and attached Figure 4, a clamp groove 71 is formed in the middle of the lifting crossarm 4, and the lower part of the clamp 7 of the inverted U-shaped structure is installed on the lifting crossarm 4 through the clamp groove 71, so that the pipe 8 can be fixed on the lifting crossarm 4 through the upper part of the clamp 7. After the pipe 8 is fixed by the clamp 7, it can prevent displacement during the lifting process. Preferably, mounting holes can be opened on the top and bottom wing plates of the steel beam for passing the lower part of the clamp 7, and the lower part of the clamp 7 is fixed to the steel beam through a nut through a thread. The upper part of the clamp 7 forms a ring structure on the top of the steel beam for passing the pipe 8, and stably combines the pipe 8 with the steel beam. The clamp 7 can be made of round steel and bent, and the height of the clamp 7 can be adjusted according to the outer diameter of the pipe 8 and the height adaptability of the steel beam.

[0048] A segmented lifting assembly method for upper pipe installation includes the following steps:

[0049] Please see the attached Figure 1 , Attachment Figure 5 and attached Figure 6 Step 1: Install the lifting work platform on the structural column 9 and the structural beam 10. At least two sets of lifting work platforms are installed at intervals along the length direction of the pipe 8 to be assembled, and the lifting crossbeam 4 is not installed between a pair of columns 3 of the lifting work platform.

[0050] Based on the layout plan for each section of pipeline 8 and referring to the structural beams 10 and columns 10 of the working surface, lay out the horizontal and vertical lines and segment interface lines. Determine the planar positions of the lifting platform's columns 3, anti-slip base 35, and connecting top plate 1, and determine the planar range for the pipeline 8 placement.

[0051] According to the planning and design of the main electromechanical pipeline and the characteristics of the building structure (beams, slabs, columns and walls), the pipeline 8 can be divided into several sections, and the length of each section varies from 6 to 50 meters. The number and spacing of the lifting work platforms can be adaptively adjusted according to the length of each section of the pipeline 8 to ensure that the lifting work platform provides reliable support for each section of the pipeline 8. The spacing of the lifting work platforms is preferably 6 to 9 meters.

[0052] The lifting workbench can be made of round steel, square steel, steel section and other materials, and can meet the lifting operation requirements of pipeline 8 weighing no more than 8000kg. If the mass of pipeline 8 is large, the number of lifting workbenches can be increased according to the weight calculation.

[0053] When installing the lifting workbench, attention should be paid to: ① The position of the workbench unit should be conducive to load balance, safety and stability; ② The position of the workbench unit should facilitate the operation of the transmission component 2; ③ The position of the workbench unit should not affect the installation of the pipeline 8; ④ The position of the column 3 should be close to the end of each section of the pipeline 8.

[0054] The spacing between the pair of columns 3 is determined based on the laying width of the pipeline 8 and the spacing between the structural columns 9. The lengths of the jacking crossarm 4 and the lifting crossarm 5 are adaptively adjusted based on the spacing between the pair of columns 3 to ensure that both ends of the jacking crossarm 4 and the lifting crossarm 5 can be inserted into the transmission slots 31 of the pair of columns 3 and raised and lowered. The length of the columns 3 is determined based on the height of the structural beam 10 and the installation height of the pipeline 8. The column 3 length is preferably 5m, which allows the bottom travel of the pipeline 8 to reach 4.3m, meeting the installation travel requirements of most pipelines 8.

[0055] The above completes the first phase of construction, namely the ground operation phase.

[0056] Step 2: Place several sections of pipes 8 on the ground and between a pair of columns 3 of the lifting work platform. At least two sets of lifting work platforms are set within the length of each section of pipe 8.

[0057] The number of pipes 8 is based on the number of pipes to be assembled. When setting up each section of pipe 8, the end faces of the radially laid pipes 8 should be aligned, and the axially laid pipes 8 should maintain coaxiality. This will make it easier for operators to perform operations such as alignment, leveling, and connection during subsequent aerial work. At the same time, pipe fittings such as reducers, tees, and elbows, as well as flexible joint valves and other pipe accessories, should be located between adjacent axially laid pipes 8 to facilitate assembly. Equipment installation locations, hoisting parts 82 installation locations, and assembly locations where aerial work is more difficult (such as smaller Z-shaped pipe sections, cross-pipe intersections, T-shaped pipe intersections, etc.) should be within the length of each section of pipe 8.

[0058] In order to facilitate the ground assembly operation, the spacing between each section of pipeline 8 can be 3-5mm. The assembly form of each section of pipeline 8 can be a broken line, a straight line, a curve, etc. to meet different pipeline 8 assembly requirements.

[0059] Step 3: Hoist the pipe 8 below the lifting crossarm 5 of all lifting work platforms through the lifting parts 82, and lift the pipe 8 through the lifting crossarm 5 through the transmission assembly 2.

[0060] In the step 3, the lifting height of the pipe 8 should be higher than the installation height of the lifting cross arm 4. Preferably, the lifting height of the pipe 8 is higher than the installation height of the lifting cross arm 4 by more than 100 mm to ensure the installation of the lifting cross arm 4.

[0061] Preferably, the lifting member 81 can be a flexible flat lifting belt to meet the binding and lifting requirements of the pipeline 8.

[0062] Step 4: Install a lifting cross arm 4 between a pair of columns 3 of each lifting work platform, and the lifting cross arm 4 is located below the pipe 8.

[0063] Please see the attached Figure 6, Step 5: Use the transmission assembly 2 to drop the pipe 8 onto the lifting crossarm 5 via the lifting crossarm 4, and remove the lifting crossarm 5.

[0064] When the lifting function is not needed temporarily, the lifting cross arm 5 is removed to facilitate the ground assembly operation of the pipeline 8.

[0065] Step 6: Perform ground assembly work on the pipeline 8 , install the assembly frame 81 on the pipeline 8 , and install the assembly plate 101 on the structural beam 10 .

[0066] The ground assembly operations of pipeline 8 include rust removal, cutting, processing, digging holes, connecting branch pipe sections, pipe docking, pipe fitting connection, pipe accessory connection, painting, hoisting, pipe clamp installation, insulation operations, and conventional installation of components such as bevels, flanges and grooves, etc., to form a finished pipeline component. The assembly operations are all completed on the ground, reducing the content of high-altitude operations and greatly improving work efficiency and safety.

[0067] Step 7: Fix the pipe 8 to the lifting crossarm 4 with the clamp 7. Each connection node between the pipe 8 and the lifting crossarm 4 is reinforced by the clamp 7 to prevent the pipe 8 from displacement and instability during the lifting process.

[0068] The above completes the second phase of construction, namely the ground assembly phase.

[0069] Please see the attached Figure 7 , Step 8: Install the lifting crossarm 5 between a pair of columns 3 of each lifting work platform, and hoist the pipe 8 under the lifting crossarm 5 of all lifting work platforms through the lifting parts 82, and lift the pipe 8 through the lifting crossarm 5 through the transmission assembly 2.

[0070] When the pipeline 8 is hoisted to the designed height, the final assembly operation of the pipeline 8 can be carried out. There are fewer assembly operations at high altitude, the difficulty is low, the construction is easy, and the construction progress and quality are guaranteed.

[0071] Since the ground may be uneven, the installation heights of the columns 3 are different. The strokes of the lifting crossarm 4 and the hoisting crossarm 5 are based on the contour lines provided by the civil engineering survey, and the transmission parts 21 of all lifting work platforms operate synchronously to ensure the overall and synchronous lifting of the multiple radially arranged pipes 8.

[0072] Please see the attached Figure 8 and attached Figure 9 , Step 9: Fix the assembly frame 81 to the assembly plate 101, assemble the pipe 8 on the structural beam 10, and complete the assembly connection between the pipes 8, such as alignment and leveling of adjacent pipes 8, component connection, insulation, etc.

[0073] The above completes the third phase of construction, i.e. the aerial work phase. Most of the construction of pipeline 8 is completed in the first two construction phases, so the aerial work phase has less content.

[0074] Step 10: Remove all lifting work platforms and move to the next work section until all pipes 8 are assembled. The lifting work platforms can be reused to reduce construction costs.

[0075] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A segmented lifting assembly device for upper pipe installation, characterized by: The invention comprises at least two groups of lifting work platforms, each group of lifting work platforms comprises a connecting top plate (1), a transmission assembly (2), a column (3), a lifting cross arm (4), a lifting cross arm (5) and a connecting piece (6); the column (3) is vertically arranged on the ground and located beside the structural column (9); the connecting piece (6) is installed on the top of the column (3), and the connecting piece (6) is fixed to the structural beam (10) through the connecting top plate (1); the transmission assembly (2) is arranged in the connecting piece (6) and the column (3), and a transmission groove (31) is formed on one side of the column (3) along the length direction of the column (3); the two ends of the lifting cross arm (5) are respectively plugged into the transmission grooves of a pair of columns (3). In the movable groove (31), the lifting end of the transmission component (2) is connected to the end of the lifting cross arm (5), so that the lifting cross arm (5) is lifted up and down along the transmission groove (31) through the transmission component (2) in the pair of columns (3), and the pipeline (8) can be hoisted below the lifting cross arm (5); the two ends of the jacking cross arm (4) are respectively inserted into the transmission groove (31) of the pair of columns (3), and the lifting end of the transmission component (2) is connected to the end of the jacking cross arm (4), so that the jacking cross arm (4) is lifted up and down along the transmission groove (31) through the transmission component (2) in the pair of columns (3), and the jacking cross arm (4) is higher than the ground, and the pipeline (8) can be placed on the jacking cross arm (4); Each group of the transmission components (2) includes a transmission member (21), a lifting chain (22), a lifting piston (23) and a lifting piston (24); the upper end of the lifting chain (22) is connected to the transmission member (21), the lower end of the lifting chain (22) is connected to the lifting piston (23), and the lifting piston (24) is connected to the transmission member (21); a cross arm insertion hole (25) is formed in the lifting piston (23) and the lifting piston (24), so that the end of the lifting cross arm (5) can be inserted into the lifting piston (23) through the cross arm insertion hole (25), and the end of the lifting cross arm (4) can be inserted into the lifting piston (24) through the cross arm insertion hole (25); The bottom of the lifting piston (23) is formed with a slot, and the top of the jacking piston (24) is formed with a socket (26). The slot and the socket (26) are matched and plugged together, so that the lifting piston (23) can be coaxially arranged on the top of the jacking piston (24).

2. The segmented lifting assembly device for upper pipe installation according to claim 1 is characterized in that: A scale line (32) is formed on the outer wall of the column (3) along the length direction of the column (3), and a limiter (33) is provided on the top of the transmission groove (31), and the limiter (33) is located below the bottom of the connecting member (6).

3. The segmented lifting assembly device for upper pipe installation according to claim 1 is characterized in that: A plurality of loading and unloading holes (34) are formed at intervals on the other side of the upright column (3), and the loading and unloading holes (34) are communicated with the transmission groove (31).

4. The segmented lifting assembly device for upper pipe installation according to any one of claims 1 to 3, characterized in that: The bottom of each of the upright posts (3) is sleeved with an anti-skid base (35).

5. The segmented lifting assembly device for upper pipe installation according to claim 1 is characterized in that: The middle portion of the lifting cross arm (4) is formed with a clamp groove (71), and the lower portion of the inverted U-shaped clamp (7) is installed on the lifting cross arm (4) through the clamp groove (71), so that the pipe (8) can be fixed on the lifting cross arm (4) through the upper portion of the clamp (7).

6. A segmented lifting assembly method using the segmented lifting assembly device for upper pipe installation according to claim 1, characterized in that: The following steps are involved: Step 1: Install at least two sets of lifting work platforms on the structural columns (9) and the structural beams (10); Step 2: placing several sections of pipes (8) on the ground and between a pair of uprights (3) of a lifting workbench, with at least two sets of lifting workbench being provided within the length of each section of pipes (8); Step 3: Hoist the pipe (8) below the lifting crossarm (5), and lift the pipe (8) via the lifting crossarm (5) through the transmission assembly (2); Step 4: Install a lifting cross arm (4) between a pair of columns (3) of each lifting work platform, and the lifting cross arm (4) is located below the pipe (8); Step 5: lower the pipe (8) onto the lifting crossarm (4) via the transmission assembly (2) and the lifting crossarm (5); Step 6: Perform ground assembly work on the pipeline (8), install the assembly frame (81) on the pipeline (8), and install the assembly plate (101) on the structural beam (10); Step 7: Fix the pipe (8) on the lifting cross arm (4); Step 8: The pipeline (8) is hoisted below the lifting crossarm (5), and the pipeline (8) is lifted via the lifting crossarm (5) through the transmission assembly (2); Step 9: Fix the assembly frame (81) and the assembly plate (101) together to assemble the pipe (8) on the structural beam (10), and complete the assembly connection between the pipes (8); Step 10: Remove all lifting work platforms and move to the next work section until all pipes (8) are assembled.

7. The segmented lifting assembly method according to claim 6, characterized in that: In the step 1, at least two sets of lifting work platforms are installed at intervals along the length direction of the pipe (8) to be assembled, and no lifting crossbar (4) is installed between a pair of columns (3) of the lifting work platform.

8. The segmented lifting assembly method according to claim 6, characterized in that: In the step 3, the lifting height of the pipeline (8) is higher than the installation height of the lifting cross arm (4).

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