Large-diameter pipeline small-space transferring and butting construction system and method

Abstract

The invention relates to the technical field of sewage treatment pipeline erection, in particular to a large-diameter pipeline small-space transferring and butt-joint construction system and method.The large-diameter pipeline small-space transferring and butt-joint construction system comprises a frame body laid on a cross beam and a notch frame arranged on the frame body, and the cross beam is provided with a vertical part connected with a building; the notch frame is connected with the vertical part of the cross beam so that the frame body can be stably located above the cross beam. Two groups of conveying rollers are arranged on the frame body, and the bottom of the pipeline is supported and conveyed through the two groups of conveying rollers; according to the pipeline conveying device, the frame body is erected on the cross beams, a pipeline is arranged between the two sets of rolling wheels at the feeding end of the frame body, the pipeline is transferred through the two sets of rolling wheels to stretch across the upper portions of the multiple cross beams, and finally the rolling wheels located on the two sides of the frame body are separated from the pipeline to achieve conveying of the pipeline. And finally, the frame body is pulled out to complete laying work of the section of pipeline, and the problem that due to the fact that the site space is limited, the hoisting pipeline transferring process is slow is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment pipeline erection, and in particular to a large-diameter pipeline small-space transfer and docking construction system and method. Background Art

[0002] During the construction of a sewage treatment plant, it is necessary to lay the connecting pipes required for the operation of the treatment plant. The diameter of such pipes is relatively large and generally has a diameter of two to three meters. The laying of the pipes is basically carried out in the basement, such as Figure 1 As shown, the pipes need to be built on the beams.

[0003] In a space with a supporting beam, and when the beam is low and the pipe diameter is large, a pallet truck will not be able to carry out the transfer work in such a small space. Currently, it can only be hoisted and gradually moved to the top of the designated beam for docking. However, due to the limited space, the movable space between the pipe and the roof will be very narrow during the hoisting and transfer process. Therefore, the hoisting process needs to ensure stability during the movement and ensure that the height fluctuation during the transfer process is not too large, which leads to the problem of a very slow hoisting process. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a large-diameter pipe small-space transfer and docking construction system and method to solve the technical problem that the lifting and pipe transfer process is relatively slow due to limited site space.

[0005] Based on the above purpose, the present invention provides a large-diameter pipeline small-space transfer and docking construction system, which is used to install the pipeline on the beam, including a frame laid on the beam and a notch frame arranged on the frame, the beam has a vertical part connected to the building, and the notch frame is connected to the vertical part of the beam so that the frame is stably located above the beam; Two sets of conveying rollers are arranged on the frame, and the bottom of the pipeline is supported and conveyed by the two sets of conveying rollers; The frame is also provided with a pipe unloading control mechanism, which is used to drive two groups of conveying rollers to move so that the pipe is placed above the crossbeam.

[0006] Preferably, the frame is U-shaped, the opening direction of the U-shaped structure is the conveying direction of the pipeline, and a plurality of wheels are arranged at the bottom of the frame, and the wheels are distributed on both sides of the opening direction of the U-shaped structure.

[0007] Preferably, the pipe unloading control mechanism includes a movable frame, which is stacked and arranged along the opening direction of the U-shaped structural frame, and the movable frame is located on the inner side of the U-shaped structural frame; A top plate is correspondingly arranged above the movable frame, a guide cylinder is arranged on the top of the movable frame, a guide rod is arranged at the bottom of the top plate, and the top plate is slidably connected to the guide cylinder through the guide rod; A slide groove is provided on the top of the sliding frame, a slider is provided in the slide groove and slidably connected thereto, a connecting rod is provided between the movable frame and the top plate, one end of the connecting rod is hinged to the top plate, and the other end of the connecting rod is hinged to the slider; The movable frame is provided with a threaded rod, which penetrates through the slider and is threadedly connected thereto. The movable frame is also provided with a first servo motor, and the output shaft of the first servo motor is drivingly connected to the threaded rod.

[0008] Preferably, the notch frame is symmetrically arranged along the opening direction of the U-shaped structure frame body, and a plurality of slide grooves are arranged on the frame body, the direction of the slide grooves is perpendicular to the opening direction of the U-shaped structure frame body, and the notch frame is slidably connected to the frame body through the slide grooves; A plurality of balls are distributed at the bottom of the movable frame, and a limit rod is arranged on the inner side of the U-shaped structure frame, and the limit rod penetrates the movable frame and is slidably connected with the movable frame; The transfer and docking construction system also includes a bidirectional driver. A plurality of slot frames on one side of the frame are connected by a connecting frame. The bidirectional driver is used to control the distance between the connecting frame and the movable frame.

[0009] Preferably, the bidirectional driver comprises a dual-axis stepper motor, and the dual-axis stepper motor is installed at the closed end of the U-shaped structural frame; A driving rod is arranged between the movable frame and the connecting frame, and the driving rod is rotatably connected to the frame body. The driving rod is provided with two sections of opposing threads, and the two sections of threads arranged on the driving rod are respectively threadedly connected to the movable frame and the connecting piece through nuts; the output shaft of the dual-axis stepper motor is transmission-connected to the driving rod through a synchronous pulley set.

[0010] Preferably, the notch in the notch frame is a trapezoidal structure, and the bottom of the trapezoidal structure is an insertion opening of the notch and faces the vertical portion of the crossbeam.

[0011] Preferably, the conveying rollers are arranged and distributed on the top plate, and the conveying rollers include a wheel frame arranged on the top plate, and rollers are arranged on the wheel frame, and the radial surfaces of the rollers are inclined toward the opening direction of the U-shaped structural frame.

[0012] Preferably, a universal joint is provided on the wheel frame, a worm gear is provided at one end of the universal joint, a first bevel gear is provided at the other end of the universal joint, a second bevel gear is provided on the axle of the roller, and the first bevel gear and the second bevel gear are meshed; A worm is arranged on the top plate and is rotatably connected thereto. The worm is meshed with worm wheels of a plurality of conveying rollers. A second servo motor for driving the worm is also arranged on the top plate.

[0013] Preferably, a large diameter pipeline small space transfer and docking construction method includes the following steps: Step 1: The staff lifts the frame by crane and sets it on the beam. The closed end of the U-shaped frame can be pushed to make the frame gradually span across multiple beams. Step 2: The closed end of the frame is the feeding end. The pipe is placed between two sets of rollers at the feeding end of the frame by hoisting. Step 3: The output shaft of the second servo motor drives the worm to rotate, and the worm will drive the worm wheel in each conveying roller to rotate. The worm wheel drives the first bevel gear to rotate through the universal joint, and the first bevel gear drives the roller to rotate through the second bevel gear. The rotation direction of the roller is toward the opening direction of the U-shaped frame. Under the joint drive of the rollers on both sides of the frame, the pipeline is driven to cross over multiple beams. Step 4: Next, the pipeline needs to be removed and installed above multiple beams. The output shaft of the first servo motor drives the threaded rod to rotate, and the threaded rod drives the slider to move along the slide groove opened in the length direction of the movable frame. During the movement of the slider, the top plate will be pushed down through the connecting rod. At this time, the bottom of the pipeline contacts the beam; Step 5: The two output ends of the dual-axis stepper motor drive the driving rods on both sides of the frame to rotate through the synchronous pulley set. When the driving rods rotate, the movable frames on both sides of the frame will move away from the middle of the frame, and the rollers on both sides of the frame will be out of contact with the outer wall of the pipeline. The pipeline is completely placed above multiple beams. At the same time, the notch frames on both sides of the frame will be driven by the connecting frame to be out of the plug-in connection with the vertical part of the beam. Finally, the staff can pull out the frame by hoisting, thereby completing the laying of this section of the pipeline.

[0014] Beneficial effects of the present invention: The present invention sets up a frame on a beam, places the pipeline between two sets of rollers at the feeding end of the frame, and transfers the pipeline through the two sets of rollers to make it span over multiple beams, finally making the rollers on both sides of the frame break away from the contact with the pipeline to achieve the transfer of the pipeline, and finally pulling out the frame to complete the laying of this section of the pipeline, thereby solving the problem of slow transfer process of hoisting pipeline due to limited site space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of pipeline and site status; Figure 2It is a front view of the present invention; Figure 3 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ; Figure 4 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ; Figure 5 for Figure 4 A magnified image of point A; Figure 6 It is a structural schematic diagram of the pipe unloading control mechanism of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the notch frame of the present invention; Figure 8 It is a top view of the present invention.

[0017] The numbers in the figure are: 1-frame; 11-wheel body; 12-limiting rod; 2-notch frame; 21-connecting frame; 3-conveying roller; 31-wheel frame; 32-roller; 33-universal joint; 34-worm gear; 35-first bevel gear; 36-second bevel gear; 4-pipe unloading control mechanism; 41-movable frame; 411-guide cylinder; 412-ball; 42-top plate; 421-guide rod; 43-slider; 44-connecting rod; 45-threaded rod; 46-first servo motor; 5-bidirectional drive; 51-dual-axis stepping motor; 52-driving rod; 53-synchronous pulley set; 6-worm; 61-second servo motor. DETAILED DESCRIPTION

[0018] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0019] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] The first aspect of the present invention provides a large diameter pipeline small space transfer and docking construction system, such as Figures 1 to 4 and Figure 8 As shown, it is used to install the pipeline on the beam, including a frame 1 laid on the beam and a notch frame 2 arranged on the frame 1, the beam has a vertical part connected to the building, and the notch frame 2 is connected to the vertical part of the beam so that the frame 1 is stably placed above the beam; Two groups of conveying rollers 3 are arranged on the frame 1, and the bottom of the pipeline is supported and conveyed by the two groups of conveying rollers 3; The frame 1 is also provided with a pipe unloading control mechanism 4, which is used to drive the two groups of conveying rollers 3 to move so that the pipe is placed above the crossbeam.

[0021] like Figure 3 and Figure 8 As shown, further: The frame 1 is U-shaped, and the opening direction of the U-shaped structure is the conveying direction of the pipeline. A plurality of wheels 11 are arranged at the bottom of the frame 1, and the wheels 11 are distributed along both sides of the opening direction of the U-shaped structure.

[0022] like Figure 6 As shown, further: The pipe unloading control mechanism 4 includes a movable frame 41, which is stacked along the opening direction of the U-shaped structure frame 1, and the movable frame 41 is located on the inner side of the U-shaped structure frame 1; A top plate 42 is correspondingly disposed above the movable frame 41, a guide cylinder 411 is disposed on the top of the movable frame 41, a guide rod 421 is disposed at the bottom of the top plate 42, and the top plate 42 is slidably connected to the guide cylinder 411 through the guide rod 421; A slide groove is provided on the top of the sliding frame, a slider 43 is provided in the slide groove and slidably connected thereto, a connecting rod 44 is provided between the movable frame 41 and the top plate 42, one end of the connecting rod 44 is hinged to the top plate 42, and the other end of the connecting rod 44 is hinged to the slider 43; The movable frame 41 is provided with a threaded rod 45 , which penetrates through the slider 43 and is threadedly connected thereto. The movable frame 41 is also provided with a first servo motor 46 , and the output shaft of the first servo motor 46 is drivingly connected to the threaded rod 45 .

[0023] like Figure 4 and Figure 5 As shown, further: The notch frame 2 is symmetrically arranged along the opening direction of the U-shaped structure frame 1, and a plurality of slide grooves are arranged on the frame 1, and the direction of the slide grooves is perpendicular to the opening direction of the U-shaped structure frame 1, and the notch frame 2 is slidably connected to the frame 1 through the slide grooves; A plurality of balls 412 are distributed at the bottom of the movable frame 41, and a limit rod 12 is arranged on the inner side of the U-shaped structure frame 1, and the limit rod 12 penetrates the movable frame 41 and is slidably connected thereto; The transfer and docking construction system also includes a bidirectional driver 5 . The multiple slot frames 2 on one side of the frame 1 are connected via a connecting frame 21 . The bidirectional driver 5 is used to control the distance between the connecting frame 21 and the movable frame 41 .

[0024] like Figure 4 and Figure 5 As shown, further: The bidirectional driver 5 includes a biaxial stepping motor 51, and the biaxial stepping motor 51 is installed at the closed end of the U-shaped structural frame 1; A driving rod 52 is arranged between the movable frame 41 and the connecting frame 21. The driving rod 52 is rotatably connected to the frame body 1. The driving rod 52 is provided with two sections of opposing threads. The two sections of threads provided on the driving rod 52 are respectively threadedly connected to the movable frame 41 and the connecting piece through nuts; the output shaft of the dual-axis stepper motor 51 is transmission-connected to the driving rod 52 through a synchronous pulley set 53.

[0025] like Figure 7 As shown, further: The slots in the slot frame 2 are in a trapezoidal structure, and the bottom of the trapezoidal structure is an insertion opening of the slot and faces the vertical portion of the crossbeam.

[0026] like Figure 4 and Figure 5 As shown, further: The conveying rollers 3 are arranged and distributed on the top plate 42 . The conveying rollers 3 include a wheel frame 31 disposed on the top plate 42 . The wheel frame 31 is provided with rollers 32 . The radial surfaces of the rollers 32 are inclined toward the opening direction of the U-shaped structural frame 1 .

[0027] The angle at which the radial surface of the roller 32 is inclined toward the opening direction of the U-shaped structure frame 1 is preferably 45 degrees but is not limited thereto. like Figure 5 As shown, further: A universal joint 33 is provided on the wheel frame 31, a worm gear 34 is provided at one end of the universal joint 33, a first bevel gear 35 is provided at the other end of the universal joint 33, a second bevel gear 36 is provided on the axle of the roller 32, and the first bevel gear 35 and the second bevel gear 36 are meshed with each other; A worm 6 is disposed on the top plate 42 and is rotatably connected thereto. The worm 6 is meshed with the worm wheels 34 of the plurality of conveying rollers 3 . A second servo motor 61 for driving the worm 6 is also disposed on the top plate 42 .

[0028] In this embodiment, the staff lifts the frame 1 by a crane and sets it on the beam. A plurality of wheels 11 are distributed at the bottom of the frame 1. The frame 1 can be pushed at the closed end of the U-shaped frame 1 so that the frame 1 gradually crosses a plurality of beams. Then the bidirectional driving mechanism starts to work. The two output ends of the biaxial stepping motor 51 drive the driving rods 52 on both sides of the frame 1 to rotate through the synchronous pulley set 53. Since the two sections of threads provided on the driving rod 52 are respectively threadedly connected to the movable frame 41 and the connecting piece through nuts, when the driving rod 52 rotates, the movable frames 41 on both sides of the frame 1 will move closer to the middle thereof. At the same time, the notch frames 2 on both sides of the frame 1 will be driven by the connecting frame 21 to approach the vertical portion of the beam, and the vertical portion enters the notch. Since the interior of the notch is a trapezoidal structure, it will be continuously tightened during the gradual insertion of the notch, thereby completing the limitation that the control frame 1 will not move horizontally on the beam. The output shaft of the first servo motor 46 drives the threaded rod 45 to rotate, and the threaded rod 45 drives the slider 43 to move along the slide groove opened in the length direction of the movable frame 41. Since the top plate 42 is slidably connected with the guide cylinder 411 through the guide rod 421, the top plate 42 will be pushed up by the connecting rod 44 during the movement of the slider 43, and at this time, the closed end of the frame body 1 is the loading end; The pipeline is placed between the two groups of rollers 32 at the feeding end of the frame 1 by hoisting, and the output shaft of the second servo motor 61 drives the worm 6 to rotate, and the worm 6 drives the worm gear 34 in each conveying roller 3 to rotate, and the worm gear 34 drives the first bevel gear 35 to rotate through the universal joint 33. Since the first bevel gear 35 is meshed with the second bevel gear 36, the first bevel gear 35 drives the roller 32 to rotate through the second bevel gear 36. The rotation direction of the roller 32 is toward the opening direction of the U-shaped frame 1. Under the common drive of the rollers 32 on both sides of the frame 1, the pipeline is driven to cross over multiple beams; Next, the pipeline needs to be removed and installed above the multiple beams. The output shaft of the first servo motor 46 drives the threaded rod 45 to rotate, and the threaded rod 45 drives the slider 43 to move along the slide groove provided in the length direction of the movable frame 41. During the movement of the slider 43, the top plate 42 is pushed down through the connecting rod 44, and the bottom of the pipeline contacts the beam. The two output ends of the dual-axis stepper motor 51 drive the driving rod 52 on both sides of the frame 1 to rotate through the synchronous pulley set 53. When the driving rod 52 rotates, the movable frames 41 on both sides of the frame 1 will move away from the middle, and the rollers 32 on both sides of the frame 1 will be out of contact with the outer wall of the pipeline. The pipeline is completely placed above multiple beams. At the same time, the notch frames 2 on both sides of the frame 1 are driven by the connecting frame 21 to be out of the plug-in connection with the vertical part of the beam. Finally, the staff can pull out the frame 1 by hoisting, thereby completing the laying of this section of the pipeline.

[0029] The present invention proposes a construction method for transferring and docking large-diameter pipelines in a small space, which includes the following steps: Step 1: The staff lifts the frame 1 by a crane and sets it on the beam. The frame 1 can be pushed at the closed end of the U-shaped frame 1 so that the frame 1 gradually spans across multiple beams; Step 2: The closed end of the frame 1 is the feeding end, and the pipe is placed between the two sets of rollers 32 at the feeding end of the frame 1 by hoisting; Step 3: The output shaft of the second servo motor 61 drives the worm 6 to rotate, and the worm 6 drives the worm gear 34 in each conveying roller 3 to rotate. The worm gear 34 drives the first bevel gear 35 to rotate through the universal joint 33. The first bevel gear 35 drives the roller 32 to rotate through the second bevel gear 36. The rotation direction of the roller 32 is toward the opening direction of the U-shaped frame 1. Under the common drive of the rollers 32 on both sides of the frame 1, the pipeline is driven to cross over multiple beams. Step 4: Next, the pipeline needs to be removed and installed above multiple beams. The output shaft of the first servo motor 46 drives the threaded rod 45 to rotate, and the threaded rod 45 drives the slider 43 to move along the slide groove provided in the length direction of the movable frame 41. During the movement of the slider 43, the top plate 42 is pushed down through the connecting rod 44, and the bottom of the pipeline contacts the beam at this time. Step 5: The two output ends of the dual-axis stepper motor 51 drive the driving rod 52 on both sides of the frame 1 to rotate through the synchronous pulley set 53. When the driving rod 52 rotates, the movable frames 41 on both sides of the frame 1 will move away from the middle, and the rollers 32 on both sides of the frame 1 will be out of contact with the outer wall of the pipeline. The pipeline is completely placed above multiple beams. At the same time, the notch frames 2 on both sides of the frame 1 are driven by the connecting frame 21 to be out of the plug-in connection with the vertical part of the beam. Finally, the staff can pull out the frame 1 by hoisting, thereby completing the laying of this section of the pipeline.

[0030] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0031] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, 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 large diameter pipeline small space transfer and docking construction system, used to install the pipeline on the beam, characterized in that: It includes a frame body laid on a beam and a notch frame arranged on the frame body, the beam has a vertical portion connected to the building, and the notch frame is connected to the vertical portion of the beam so that the frame body is stably located above the beam; Two sets of conveying rollers are arranged on the frame, and the bottom of the pipeline is supported and conveyed by the two sets of conveying rollers; The frame is also provided with a pipe unloading control mechanism, which is used to drive two groups of conveying rollers to move so that the pipe is placed above the crossbeam.

2. A large diameter pipeline small space transfer and docking construction system according to claim 1, characterized in that: The frame is U-shaped, the opening direction of the U-shaped structure is the conveying direction of the pipeline, and a plurality of wheels are arranged at the bottom of the frame, and the wheels are distributed on both sides of the opening direction of the U-shaped structure.

3. A large diameter pipeline small space transfer and docking construction system according to claim 2, characterized in that: The pipe unloading control mechanism includes a movable frame, which is stacked and arranged along the opening direction of the U-shaped structural frame, and the movable frame is located on the inner side of the U-shaped structural frame; A top plate is correspondingly arranged above the movable frame, a guide cylinder is arranged on the top of the movable frame, a guide rod is arranged at the bottom of the top plate, and the top plate is slidably connected to the guide cylinder through the guide rod; A slide groove is provided on the top of the sliding frame, a slider is provided in the slide groove and slidably connected thereto, a connecting rod is provided between the movable frame and the top plate, one end of the connecting rod is hinged to the top plate, and the other end of the connecting rod is hinged to the slider; The movable frame is provided with a threaded rod, which penetrates through the slider and is threadedly connected thereto. The movable frame is also provided with a first servo motor, and the output shaft of the first servo motor is drivingly connected to the threaded rod.

4. A large diameter pipeline small space transfer and docking construction system according to claim 2, characterized in that: The notch frame is symmetrically arranged along the opening direction of the U-shaped structure frame body, and a plurality of slide grooves are arranged on the frame body, and the direction of the slide grooves is perpendicular to the opening direction of the U-shaped structure frame body, and the notch frame is slidably connected with the frame body through the slide grooves; A plurality of balls are distributed at the bottom of the movable frame, and a limit rod is arranged on the inner side of the U-shaped structure frame, and the limit rod penetrates the movable frame and is slidably connected with the movable frame; The transfer and docking construction system also includes a bidirectional driver. A plurality of slot frames on one side of the frame are connected by a connecting frame. The bidirectional driver is used to control the distance between the connecting frame and the movable frame.

5. A large diameter pipeline small space transfer and docking construction system according to claim 4, characterized in that: The bidirectional driver includes a dual-axis stepper motor, which is installed at the closed end of the U-shaped structure frame; A driving rod is arranged between the movable frame and the connecting frame, and the driving rod is rotatably connected to the frame body. The driving rod is provided with two sections of opposing threads, and the two sections of threads arranged on the driving rod are respectively threadedly connected to the movable frame and the connecting piece through nuts; the output shaft of the dual-axis stepper motor is transmission-connected to the driving rod through a synchronous pulley set.

6. The large-diameter pipeline small-space transfer and docking construction system according to claim 1 is characterized in that: The slots in the slot frame are in a trapezoidal structure, and the bottom of the trapezoidal structure is an insertion opening of the slot and faces the vertical portion of the crossbeam.

7. The large-diameter pipeline small-space transfer and docking construction system according to claim 3 is characterized in that: The conveying rollers are arranged and distributed on the top plate. The conveying rollers include a wheel frame arranged on the top plate. The wheel frame is provided with rollers. The radial surfaces of the rollers are inclined toward the opening direction of the U-shaped structural frame.

8. A large diameter pipeline small space transfer and docking construction system according to claim 7, characterized in that: A universal joint is arranged on the wheel frame, a worm gear is arranged at one end of the universal joint, a first bevel gear is arranged at the other end of the universal joint, a second bevel gear is arranged on the wheel shaft of the roller, and the first bevel gear and the second bevel gear are meshed; A worm is arranged on the top plate and is rotatably connected thereto. The worm is meshed with worm wheels of a plurality of conveying rollers. A second servo motor for driving the worm is also arranged on the top plate.

9. A method for transferring and docking a large-diameter pipeline in a small space, using the transfer and docking construction system according to any one of claims 1 to 8, characterized in that: The following steps are included: Step 1: The staff lifts the frame by crane and sets it on the beam. The closed end of the U-shaped frame can be pushed to make the frame gradually span across multiple beams. Step 2: The closed end of the frame is the feeding end. The pipe is placed between two sets of rollers at the feeding end of the frame by hoisting. Step 3: The output shaft of the second servo motor drives the worm to rotate, and the worm will drive the worm wheel in each conveying roller to rotate. The worm wheel drives the first bevel gear to rotate through the universal joint, and the first bevel gear drives the roller to rotate through the second bevel gear. The rotation direction of the roller is toward the opening direction of the U-shaped frame. Under the joint drive of the rollers on both sides of the frame, the pipeline is driven to cross over multiple beams. Step 4: Next, the pipeline needs to be removed and installed above multiple beams. The output shaft of the first servo motor drives the threaded rod to rotate, and the threaded rod drives the slider to move along the slide groove opened in the length direction of the movable frame. During the movement of the slider, the top plate will be pushed down through the connecting rod. At this time, the bottom of the pipeline contacts the beam; Step 5: The two output ends of the dual-axis stepper motor drive the driving rods on both sides of the frame to rotate through the synchronous pulley set. When the driving rods rotate, the movable frames on both sides of the frame will move away from the middle of the frame, and the rollers on both sides of the frame will be out of contact with the outer wall of the pipeline. The pipeline is completely placed above multiple beams. At the same time, the notch frames on both sides of the frame will be driven by the connecting frame to be out of the plug-in connection with the vertical part of the beam. Finally, the staff can pull out the frame by hoisting, thereby completing the laying of this section of the pipeline.

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