A pipe installation apparatus and method

Abstract

The pipeline installation device and method belong to the technical field of building machinery, and the device comprises a working platform A, a working platform B, an adjustable height supporting leg, a sliding trolley A, a sliding trolley B, an arc positioning plate, a guide rod, a guide hole, a flexible guide, a fixing mechanism and a butt joint mechanism. The use method of the pipeline installation device and method simplifies the complex pipeline butt joint procedure into two simple steps, the first step is accurate positioning between the pipeline to be installed and the sliding trolley A or the sliding trolley B, and the second step is accurate butt joint between the two pipelines to be installed through accurate positioning between the sliding trolley A and the sliding trolley B. Through the above setting, the difficulty of pipeline butt joint installation is effectively reduced, and the quality of butt joint installation is improved.

Description

Technical Field

[0001] This invention belongs to the field of construction machinery technology, specifically relating to a pipeline installation device and method. Background Technology

[0002] Pipeline installation involves connecting adjacent pipes using methods such as heat fusion or welding. Due to the weight of the pipes, common connection methods often rely on lifting equipment, such as the pipeline installation equipment based on BIM technology disclosed in patent application CN202411342630. This equipment includes a lifting mechanism detachably suspended from a tower crane hook. The lifting mechanism comprises two lifting platforms, each with an electric hoist installed internally at both ends. A first rope is driven by the outer side of each electric hoist, and a second rope is detachably fixed below two adjacent first ropes. Multiple steel balls are connected in series on the outer side of each second rope. In this invention, the level bubble on the traction rope is observed to determine if the two pipes are at the same height, allowing construction personnel to quickly identify the installation position. The two electric hoists respectively wind up and release the first rope, allowing the second rope, carrying the steel balls, to support the pipe at the gap between the bottom of the pipe and the bottom of the underground trench. This prevents the pipe joint from tilting due to the lower elevation of one end of the pipe, thus ensuring the safety of the pipe joint after connection.

[0003] The drawback of this type of technology is that:

[0004] 1. Not only is the structure complex, but the operation is also cumbersome. When the lifting equipment lifts the pipeline, the pipeline inevitably shakes, making it extremely difficult to find the connection point during the lifting process. Especially when it involves the hot melting and welding of the pipeline, even slight shaking can damage the effect of hot melting or welding at the joint.

[0005] 2. Although the equipment can be moved to a new installation location after the connection of one end of the pipeline is completed, the lack of continuity between the previous and subsequent installation work makes it impossible to truly realize a pipeline installation assembly line operation. Summary of the Invention

[0006] In view of the problems described in prior art 1 and 2, the present invention discloses a pipeline installation device and method.

[0007] To achieve the above objectives, the technical solution of this invention is as follows:

[0008] A pipeline installation device includes a working platform A and a working platform B. The bottom of each working platform A and working platform B is equipped with adjustable-height support legs. Each working platform A and working platform B contains a sliding trolley A and a sliding trolley B, respectively. Multiple arc-shaped positioning plates are arranged along the length of each sliding trolley A and sliding trolley B. These arc-shaped positioning plates have identical structures and are coaxially arranged. The curvature of each arc-shaped positioning plate is less than the curvature of the pipeline to be installed. When the pipeline is placed within the multiple arc-shaped positioning plates, due to gravity, the generatrix at the bottom end of the pipeline contacts the generatrix at the bottom end of the inner surface of the arc-shaped positioning plate, achieving preliminary positioning of the pipeline relative to sliding trolley A or sliding trolley B. Two of the generatrixes are parallel to the center line of the base plate of sliding trolley A or sliding trolley B and the side walls on both sides of the base plate. The top of the side wall is provided with multiple guide rods along the longitudinal direction. The top of the guide rods is provided with guide holes. The inner diameter of each guide hole of the sliding trolley A and the sliding trolley B is the same, and the vertical distance between the center of the hole and the bottom upper surface of the working platform A or the working platform B is the same. The guide holes on the same side of the sliding trolley A or the sliding trolley B are coaxial. The guide holes on both sides of the sliding trolley A and the sliding trolley B are connected in series by flexible guide members. When the flexible guide members are straightened, the two pipes to be installed are coaxially aligned. The coaxial alignment has an error within the control range due to the elasticity of the flexible guide members. The inner side of the sliding trolley A and the sliding trolley B is provided with a fixing mechanism for further fixing the pipes to be installed. The opposite ends of the sliding trolley A and the sliding trolley B are provided with a docking mechanism for connecting and tightening the two pipes and finally accurately positioning them.

[0009] Preferably, the working platform A and working platform B have the same structural dimensions, both including a first support body with a U-shaped cross-section and open front and rear ends. The four corners of the bottom end of the first support body are provided with adjustable height support legs. The bottom end of the adjustable height support legs is provided with a first universal wheel with a brake. A level is installed on the first support body. The sliding trolley A and sliding trolley B have the same structure. Their bottom plate and side walls form a second support body with a U-shaped structure. The four corners of the bottom end of the bottom plate are provided with second universal wheels for sliding trolley A and sliding trolley B on the inner surface of the bottom of the first support body. The length of the second support body is greater than the width of the first support body. The inner surface of the bottom plate of the second support body is parallel to the inner surface of the bottom of the first support body.

[0010] Preferably, the flexible guide is a rope passing through the guide hole, with the outer surface of the rope and the inner surface of the guide hole having a clearance fit. Two ropes are connected at one end facing the work platform B to a first U-shaped clamp, which engages with the outer end of the top of the work platform B. The other ends of the two ropes are connected to a second U-shaped clamp, which engages with the outer end of the top of the work platform A. Limiting blocks are provided on the top of the two side walls of the work platform A or work platform B where the first and second U-shaped clamps are located, to restrict the first or second U-shaped clamp from sliding inwards. Pulling cylinders are provided on both sides of the top of the second U-shaped clamp, arranged along the direction of rope straightening and connected to the rope ends on the same side. After the two ropes are straightened, they provide guidance for the opposing movement of the sliding trolley A and sliding trolley B.

[0011] Preferably, the fixing mechanism comprises multiple sets, each set including two electric cylinders horizontally oppositely arranged on the inner surfaces of the side walls of the second support body. The fixed ends of the electric cylinders are fixedly connected to the mounting plates pre-set on the inner surfaces of the side walls of the second support body by bolts. The mounting plates have a plurality of threaded holes arranged in a matrix, which are used to adjust the position of the electric cylinders in the up, down, forward, and backward directions. The telescopic ends of the electric cylinders are detachably connected to arc-shaped pressure plates, and two opposing arc-shaped pressure plates are used to clamp the pipe to be installed. The arc-shaped pressure plates are available in various models according to the size of the pipe to be installed.

[0012] Preferably, the docking mechanism includes two threaded holes on the side walls of the sliding trolley A facing the middle of one end of the sliding trolley B. The axis of the threaded holes is parallel to the bottom plate of the second support and extends into the side wall. A cast iron rod is screwed into the threaded hole, and the end of the cast iron rod is provided with a frustum-shaped guide head. The docking mechanism also includes two docking holes on the side walls of the sliding trolley B facing the middle of one end of the sliding trolley A. An electromagnet is provided at the bottom of the docking hole. The sliding trolley B is provided with a power socket for supplying power to the electromagnet and an adjustment button for controlling the power of the electromagnet.

[0013] Preferably, the inner surface of the arc-shaped positioning plate has a plurality of ball grooves arranged in a matrix, and a ball is rolled in the ball groove, with the top of the ball protruding from the upper end of the ball groove.

[0014] Preferably, when the rope is taut by the traction cylinder, its elasticity satisfies the condition that the displacement range of the frustum-shaped guide head is always within the range projected from the docking hole toward the sliding trolley A.

[0015] Preferably, four laser rangefinders are respectively provided at one end of the working platform A and the working platform B facing the same direction, and a detection plate is respectively provided at the other end of the working platform A and the working platform B to cooperate with the four laser rangefinders. When the distance detected by the four laser rangefinders is consistent, it means that the working platform A and the working platform B are facing each other.

[0016] A streamlined installation method for pipeline installation equipment includes the following steps:

[0017] Step 1: Set up work platform A and work platform B relative to each other, and adjust the adjustable height support feet to make the bottom upper surfaces of the two first supports be in a horizontal coplanar position. At the same time, make the distances detected by the four laser rangefinders consistent. This completes the preparation work.

[0018] Step 2: Place the sliding trolley A inside work platform A and the sliding trolley B inside work platform B. Use the lifting equipment to place the first section of pipe to be installed on the multiple arc-shaped positioning plates on the sliding trolley B to achieve the initial positioning of the first section of pipe relative to the sliding trolley B. Then, use the lifting equipment to place the second section of pipe to be installed on the multiple arc-shaped positioning plates on the sliding trolley A to achieve the initial positioning of the second section of pipe relative to the sliding trolley A.

[0019] Step 3: Engage the second U-shaped clamp with the outer end of the top of the work platform A at the set position, and engage the first U-shaped clamp with the outer end of the top of the work platform B at the set position. Pass the ropes through the guide holes on their respective sides and connect them to the corresponding traction cylinders. Under the pulling force of the traction cylinders, the ropes are tightened, and the sliding trolleys A and B drive the second section of the pipe to be installed and the first section of the pipe to be installed to be coaxially aligned. Push the opposite ends of the first section of the pipe to be installed and the second section of the pipe to be installed inward until the bottom of the joint of the first section of the pipe to be installed and the second section of the pipe to be installed are aligned with the inner end of the sliding trolley B or the sliding trolley A, respectively.

[0020] Step 4: In order to overcome the defect of uneven mass distribution on the outer wall caused by the manufacturing process of the pipe to be installed, the fixing mechanism is activated. The two electric cylinders in the same group extend to the same length and fix the first and second sections of the pipe to be installed relative to the sliding trolley B or sliding trolley A through the two arc-shaped pressure plates. At this time, the generatrix of the pipe to be installed is aligned with the generatrix of the arc-shaped positioning plate.

[0021] Step 5: Guided by the rope, move the sliding trolleys A and B in opposite directions and rotate the cast iron rod out to a set length. The set length refers to the length that matches the insertion depth of the joint of the first and second sections of the pipe to be installed under hot-melt conditions. When hot-melt is required, the hot-melt operation of the joint is completed before the cast iron rod is inserted into the mating hole. Then, the cast iron rod is inserted into the mating hole, and the electromagnet with gradually increasing power tightens the cast iron rod to insert the joint tightly, completing the entire hot-melt process. Under welding conditions, the set length refers to the tight abutment of the joint of the first and second sections of the pipe to be installed when the cast iron rod is attracted to the electromagnet.

[0022] Step Six: After the first and second sections of the pipe to be installed are connected and installed, release the fixing mechanism and move the working platform A and working platform B to the side of the second section of the pipe to be installed, so that the first section of the pipe to be installed is exposed. Support it with a temporary support frame, adjust the height and level of the working platform A and working platform B so that they are facing each other, and place the second section of the pipe to be installed on the arc-shaped positioning plate of the sliding trolley B. The lifting equipment places the third section of the pipe to be installed on the arc-shaped positioning plate of the sliding trolley A. Repeat the above steps to connect and install the third section of the pipe to be installed with the second section of the pipe to be installed. Continue in this manner until all pipes are installed. After all pipes are installed, the working platform A and working platform B, together with the sliding trolleys A and B, are moved out of the outside of all pipes.

[0023] Step 7: With the help of lifting equipment, remove the temporary support frame and place the installed pipe in the designated location on the construction site.

[0024] The beneficial effects of the pipeline installation equipment and method of the present invention are as follows:

[0025] 1. This invention greatly reduces the difficulty of placing pipes using lifting equipment. Only the position of sliding trolley A or sliding trolley B needs to be adjusted to place the pipe to be installed on the arc-shaped positioning plate. At the same time, the arc-shaped positioning plate achieves the initial positioning between the pipe to be installed and sliding trolley A or sliding trolley B.

[0026] 2. This invention simplifies the complex pipe connection process into two simple steps. The first is the precise positioning between the pipe to be installed and sliding trolley A or B. Initial positioning is achieved by placing the pipe on an arc-shaped positioning plate using lifting equipment, followed by precise positioning between the pipe and sliding trolley A or B through the equal extension of an electric cylinder. The second step, through the precise positioning of sliding trolleys A and B, achieves precise connection between the two pipes. Specifically, rope tension is used to achieve relative positioning between sliding trolleys A and B within a certain error range, followed by precise positioning between the cast iron rod and the connection hole. Because precise positioning is achieved between the pipe and sliding trolley A or B, precise positioning between the two pipe interfaces is indirectly achieved. This design effectively reduces the difficulty of pipe connection installation and improves the quality of the connection installation.

[0027] 3. This invention enables a streamlined production line operation for continuous pipeline installation. After two pipelines are installed, work platform B can be moved to the bottom of the last pipeline, while work platform A is used to receive new pipelines to be installed. Only the relative positions of work platform A and work platform B need to be adjusted before the pipeline connection and installation can continue. During installation, other workers can also level the ground at the location where the pipeline will be installed, for example, by laying down mats, thereby reducing the difficulty of adjusting work platform A and work platform B. Attached Figure Description

[0028] Figure 1 This is a front view structural diagram of the pipe connection of the present invention.

[0029] Figure 2 This is a side view of the pipe connection structure of the present invention.

[0030] Figure 3 This is a top view of the structure when the pipes of this invention are connected.

[0031] Figure 4 This is a schematic diagram illustrating the operational principle of the pipeline connection and installation assembly line of the present invention.

[0032] The diagram shows: 1-Working platform A, 2-Working platform B, 3-Second U-shaped clamping plate, 4-First U-shaped clamping plate, 5-Limiting block, 6-Pull cylinder, 7-Connecting block at the front end of the first U-shaped clamping plate, 8-Rope, 9-Guide rod, 10-Guide hole, 11-Adjustable height support leg, 12-Sliding trolley A, 13-Arc-shaped positioning plate, 14-Ball bearing, 15-Pipe to be installed, 16-Electric cylinder, 17-Mounting plate, 18-Arc-shaped pressure plate, 19-Detection plate, 20-Second universal wheel, 21-Second section of pipe to be installed, 22-First section of pipe to be installed, 23-Cast iron rod, 24-Mating hole, 25-Electromagnet, 26-Exposed first section of pipe to be installed, 27-Temporary support frame. Detailed Implementation

[0033] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0034] The following embodiments can be understood as illustrating a part of the structure or method of the present invention individually, or as combining the embodiments to explain the broader structure or method of the present invention.

[0035] In the initial embodiment, the present invention provides a pipe installation device, such as... Figure 1-4As shown, the system includes a working platform A1 and a working platform B2. Adjustable height support legs 11 are provided at the bottom of each working platform A1 and B2. Sliding trolleys A12 and B (not marked in the figure) are respectively installed inside each working platform A1 and B2. Multiple arc-shaped positioning plates 13 are arranged along the length direction at the bottom of each sliding trolley A12 and sliding trolley B. These arc-shaped positioning plates 13 have identical structures and are coaxially arranged. The curvature of each arc-shaped positioning plate 13 is less than the curvature of the pipe 15 to be installed. The pipe 15 is placed inside the multiple arc-shaped positioning plates 13. Due to gravity, the generatrix at the bottom end of the pipe 15 contacts the generatrix at the bottom end of the inner surface of the arc-shaped positioning plate 13, achieving preliminary positioning of the pipe 15 relative to the sliding trolley A12 or sliding trolley B. The generatrix is ​​parallel to the center line of the bottom plate of the sliding trolley A or sliding trolley B and the side lines on both sides of the bottom plate. The side wall has multiple guide rods 9 longitudinally arranged at the top, and guide holes 10 are provided at the top of the guide rods 9. The inner diameter of each guide hole 10 of the sliding trolley A12 and the sliding trolley B is the same, and the vertical distance between the center of the hole and the bottom upper surface of the working platform A1 or the working platform B2 is the same. The guide holes 10 on the same side of the sliding trolley A12 or the sliding trolley B are coaxial. The guide holes 10 on both sides of the sliding trolley A12 and the sliding trolley B are connected in series by flexible guide members. When the flexible guide members are straightened, the two pipes to be installed are coaxially aligned. The coaxial alignment has an error within the control range due to the elasticity of the flexible guide members. The inner side of the sliding trolley A12 and the sliding trolley B is provided with a fixing mechanism for further fixing the pipes to be installed 15. The opposite ends of the sliding trolley A12 and the sliding trolley B are provided with a docking mechanism for connecting and tightening the two pipes and finally accurately positioning them.

[0036] In a further embodiment, such as Figure 1-4 As shown, the working platforms A1 and B2 have the same structural dimensions, both including a first support body with a U-shaped cross-section and open front and rear ends. Adjustable height support legs 11 are located at the four corners of the bottom of the first support body. Each adjustable height support leg 11 has a first universal wheel with a brake at its bottom. A level (not shown in the figure) is installed on the first support body. The sliding trolleys A12 and B have the same structure, with their base plate and side walls forming a U-shaped second support body. Second universal wheels 20 are located at the four corners of the bottom of the base plate to allow sliding trolleys A12 and B to slide on the inner surface of the bottom of the first support body. The length of the second support body is greater than the width of the first support body, and the inner surface of the base plate of the second support body is parallel to the inner surface of the bottom of the first support body. Because the trolleys can slide, the difficulty of placing the pipes on the lifting equipment is greatly reduced. Simultaneously, placing the pipes on the arc-shaped positioning plate also achieves preliminary positioning between the pipes to be installed and sliding trolley A or sliding trolley B.

[0037] In a further embodiment, such as Figure 1-4 As shown, the flexible guide is a rope 8 that passes through the guide hole 10, such as a rope 8 with a wear-resistant nitrile rubber layer on its outer surface. The outer surface of the rope 8 is clearance-fitted with the inner surface of the guide hole 10. One end of the two ropes 8 facing the work platform B2 is connected to a first U-shaped clamping plate 4, which is used to engage with the outer end of the top of the work platform B2. The other end of the two ropes 8 is connected to a second U-shaped clamping plate 3, which engages with the outer end of the top of the work platform A1. The following measures are implemented: Limiting blocks 5 are provided on the top of the two side walls of the working platform A1 or working platform B2, where the first U-shaped clamp 4 and the second U-shaped clamp 3 are located at their opposite ends, to restrict the sliding of the first U-shaped clamp 4 or the second U-shaped clamp 3 inward. Pulling cylinders 6 are provided on both sides of the top of the second U-shaped clamp 3, arranged along the direction of rope straightening and connected to the ends of ropes 8 on the same side. When the two ropes 8 are straightened, they guide the relative movement of the sliding trolleys A12 and B. It should be emphasized that the straightening of the ropes 8 is not for tightening and connecting the pipes, but for positioning and guiding the relative positions of the sliding trolleys A12 and B.

[0038] In a further embodiment, such as Figure 1-4 As shown, there are multiple sets of fixing mechanisms. Each set of fixing mechanisms includes two electric cylinders 16 horizontally arranged on the inner surfaces of the side walls of the second support. The fixed ends of the electric cylinders 16 are fixedly connected to the mounting plates 17 pre-set on the inner surfaces of the side walls of the second support by bolts. The mounting plates 17 have a number of threaded holes (not shown in the figure) arranged in a matrix. The threaded holes are used to adjust the position of the electric cylinders 16 in the up, down, forward, and backward directions. The telescopic ends of the electric cylinders 16 are detachably connected to arc-shaped pressure plates 18. Two opposing arc-shaped pressure plates 18 are used to clamp the pipe 15 to be installed. The arc-shaped pressure plates 18 are available in various models according to the size of the pipe 15 to be installed.

[0039] In a further embodiment, such as Figure 1-4 As shown, the docking mechanism includes two threaded holes on the side walls of the sliding trolley A12 facing the middle of one end of the sliding trolley B. The axis of the threaded holes is parallel to the bottom plate of the second support and extends into the side wall. A cast iron rod 23 is screwed into the threaded hole. The end of the cast iron rod 23 is provided with a frustum-shaped guide head. The docking mechanism also includes two docking holes 24 on the side walls of the sliding trolley B facing the middle of one end of the sliding trolley A. An electromagnet 25 is provided at the bottom of the docking hole 24. The sliding trolley B is provided with a power socket for supplying power to the electromagnet and an adjustment button for controlling the power of the electromagnet.

[0040] In a further embodiment, such as Figure 1-4As shown, the inner surface of the arc-shaped positioning plate 13 has a number of ball grooves (not marked in the figure) arranged in a matrix. Balls 14 are rolled in the ball grooves, and the top of the ball 14 protrudes from the upper port of the ball groove to facilitate the movement of the pipeline.

[0041] In a further embodiment, such as Figure 1-4 As shown, when the rope 8 is taut by the traction cylinder 6, its elasticity satisfies the condition that the displacement range of the frustum-shaped guide head is always within the range projected by the docking hole 24 toward the sliding trolley A. That is, tautness of the rope is the initial positioning between the trolleys, and within this range, further precise positioning between the trolleys can be achieved.

[0042] In a further embodiment, such as Figure 1-4 As shown, four laser rangefinders (not shown in the figure) are respectively provided at one end of the working platform A1 and the working platform B2 facing the same direction. At the other end of the working platform A1 and the working platform B2, a detection plate 19 is respectively provided to cooperate with the four laser rangefinders. When the distance detected by the four laser rangefinders is consistent, it means that the working platform A1 and the working platform B2 are facing each other.

[0043] Based on the above embodiments, this embodiment discloses: a streamlined installation method for pipeline installation equipment, such as... Figure 1-4 As shown, it includes the following steps:

[0044] Step 1: Set up work platforms A1 and B2 opposite each other, and adjust the adjustable height support feet 11 so that the bottom upper surfaces of the two first supports are on the same horizontal plane. At the same time, make the distances detected by the four laser rangefinders consistent. This completes the preparation work. It can be understood that the opposite ends of work platforms A1 and B2 can be abutted or made into one piece.

[0045] Step 2: Place the sliding trolley A12 inside the working platform A1 and the sliding trolley B inside the working platform B2. Using the lifting equipment (not shown in the figure), place the first section of pipe 22 to be installed onto the multiple arc-shaped positioning plates 13 on the sliding trolley B to achieve the initial positioning of the first section of pipe 22 relative to the sliding trolley B. Then, using the lifting equipment, place the second section of pipe 21 to be installed onto the multiple arc-shaped positioning plates 13 on the sliding trolley A12 to achieve the initial positioning of the second section of pipe 21 relative to the sliding trolley A12.

[0046] Step 3: Engage the second U-shaped clamp 3 with the outer end of the top of the work platform A1 at the designated position, and engage the first U-shaped clamp 4 with the outer end of the top of the work platform B2 at the designated position. Pass the rope 8 sequentially through the guide hole 10 on its respective side and connect it to the corresponding pulling cylinder 6. Under the pulling force of the pulling cylinder 6, the rope 8 is tightened. The sliding trolleys A12 and B drive the second section of the pipe to be installed 21 and the first section of the pipe to be installed 22 to be coaxially aligned. Push the opposite ends of the first section of the pipe to be installed 22 and the second section of the pipe to be installed 21 inwards until the bottom of the joints of the first section of the pipe to be installed 22 and the second section of the pipe to be installed 21 are aligned with the inner end of the sliding trolley B or the sliding trolley A12, respectively. Figure 3 As shown, this is to avoid interference during the docking process;

[0047] Step 4: In order to overcome the defect of uneven mass distribution on the outer wall caused by the manufacturing process of the pipe to be installed, the fixing mechanism is activated. The two electric cylinders 16 in the same group extend to the same length and fix the first section of pipe 22 and the second section of pipe 21 to be installed relative to the sliding trolley B or the sliding trolley A through the two arc-shaped pressure plates 18. At this time, the generatrix of the pipe to be installed is aligned with the generatrix of the arc-shaped positioning plate 13.

[0048] Step 5: Guided by rope 8, slide trolleys A12 and B move towards each other, and rotate cast iron rod 23 to a set length. The set length refers to the length that matches the insertion depth of the joint of the first section of pipe 22 and the second section of pipe 21 to be installed under hot-melt conditions. When hot-melt is required, the hot-melt operation of the joint is completed before the cast iron rod 23 is inserted into the mating hole 24. Then, the cast iron rod 23 is inserted into the mating hole 24, and the electromagnet 25 with gradually increasing power tightens the cast iron rod to insert the joint tightly, completing the entire hot-melt process. Under welding conditions, the set length refers to the joint of the first section of pipe 22 and the second section of pipe 21 to be installed being tightly abutted when the cast iron rod 23 and the electromagnet 25 are attracted together, at which point welding is performed.

[0049] Step Six: After completing the connection and installation of the first section of pipe 22 and the second section of pipe 21, release the fixing mechanism and move the working platform A1 and working platform B2 towards the second section of pipe 21. Figure 4As shown, the first section of pipe to be installed is exposed and supported by temporary support frame 27. The height and level of working platform A1 and working platform B2 are adjusted so that they are facing each other. The second section of pipe to be installed is placed on the arc-shaped positioning plate 13 of sliding trolley B2. The lifting equipment places the third section of pipe to be installed on the arc-shaped positioning plate 13 of sliding trolley A12. The above steps are repeated to connect the third section of pipe to be installed with the second section of pipe. This process is repeated until all pipes are installed. After all pipes are installed, working platform A1 and working platform B2, along with sliding trolley A12 and sliding trolley B, are moved out of the outside of all pipes.

[0050] Step 7: With the help of lifting equipment, remove the temporary support frame 27 and place the installed pipe in the designated position on the construction ground.

Claims

1. A pipeline installation device, characterized in that: The system includes a work platform A and a work platform B. Each work platform A and work platform B has adjustable height support legs at its bottom. Each work platform A and work platform B contains a sliding trolley A and a sliding trolley B, respectively. Multiple arc-shaped positioning plates are arranged along the length of each sliding trolley A and sliding trolley B at their bottoms. These arc-shaped positioning plates have identical structures and are coaxially arranged. The curvature of each arc-shaped positioning plate is less than the curvature of the pipe to be installed. The pipe to be installed is placed within these arc-shaped positioning plates. Due to gravity, the generatrix at the bottom end of the pipe to be installed contacts the generatrix at the bottom end of the inner surface of the arc-shaped positioning plate, achieving initial positioning of the pipe relative to either sliding trolley A or sliding trolley B. Two of these generatrixes are parallel to the center line of the base plate of sliding trolley A or sliding trolley B and the side walls on both sides of the base plate. Multiple guide rods are provided longitudinally at the top, and guide holes are provided at the top of the guide rods. The inner diameter of each guide hole of sliding trolley A and sliding trolley B is the same, and the vertical distance between the center of the hole and the bottom upper surface of the working platform A or working platform B is the same. The guide holes on the same side of sliding trolley A or sliding trolley B are coaxial. The guide holes on both sides of sliding trolley A and sliding trolley B are connected in series by flexible guide members. When the flexible guide members are straightened, the two pipes to be installed are coaxially aligned. The coaxial alignment has an error within the control range due to the elasticity of the flexible guide members. The inner sides of sliding trolley A and sliding trolley B are respectively provided with fixing mechanisms for further fixing the pipes to be installed. The opposite ends of sliding trolley A and sliding trolley B are provided with docking mechanisms for connecting and tightening the two pipes and finally accurately positioning them. The work platforms A and B have the same structural dimensions and both include a first support body with a U-shaped cross-section and open front and rear ends. The four corners of the bottom of the first support body are provided with adjustable height support legs. The bottom of the adjustable height support legs is provided with first universal wheels with brakes. A level is installed on the first support body. The sliding trolleys A and B have the same structure. Their bottom plates and side walls form a second support body with a U-shaped structure. The four corners of the bottom of the bottom plate are provided with second universal wheels for sliding trolleys A and B on the inner surface of the bottom of the first support body. The length of the second support body is greater than the width of the first support body. The inner surface of the bottom plate of the second support body is parallel to the inner surface of the bottom of the first support body. The flexible guide is a rope that passes through a guide hole. The outer surface of the rope is clearance-fitted with the inner surface of the guide hole. One end of the two ropes facing the work platform B is connected to a first U-shaped clamp, which is used to engage with the outer end of the top of the work platform B. The other end of the two ropes is connected to a second U-shaped clamp, which is engaged with the outer end of the top of the work platform A. Limiting blocks are provided on the top of the two side walls of the work platform A or work platform B where the opposite ends of the first and second U-shaped clamps are located, to restrict the sliding of the first or second U-shaped clamp inward. Pulling cylinders are provided on both sides of the top of the second U-shaped clamp, which are arranged along the direction of rope straightening and are respectively connected to the rope ends on the same side. After the two ropes are straightened, they are used to guide the opposite movement of the sliding trolley A and the sliding trolley B.

2. The pipeline installation equipment as described in claim 1, characterized in that: The fixing mechanism consists of multiple sets, each set including two electric cylinders horizontally oppositely arranged on the inner surfaces of the side walls of the second support. The fixed ends of the electric cylinders are fixedly connected to the mounting plates pre-set on the inner surfaces of the side walls of the second support by bolts. The mounting plates have a number of threaded holes arranged in a matrix, which are used to adjust the position of the electric cylinders in the up, down, forward and backward directions. The telescopic ends of the electric cylinders are detachably connected to arc-shaped pressure plates. Two opposing arc-shaped pressure plates are used to clamp the pipe to be installed. The arc-shaped pressure plates are available in various models according to the size of the pipe to be installed.

3. The pipeline installation equipment as described in claim 2, characterized in that: The docking mechanism includes two threaded holes on the side walls of the sliding trolley A, facing the middle of one end of the sliding trolley B. The axis of the threaded holes is parallel to the bottom plate of the second support and extends into the side walls. A cast iron rod is screwed into the threaded hole, and the end of the cast iron rod is provided with a frustum-shaped guide head. The docking mechanism also includes two docking holes on the side walls of the sliding trolley B, facing the middle of one end of the sliding trolley A. An electromagnet is provided at the bottom of the docking hole. The sliding trolley B is provided with a power socket for supplying power to the electromagnet and an adjustment button for controlling the power of the electromagnet.

4. The pipeline installation equipment as described in claim 3, characterized in that: The inner surface of the arc-shaped positioning plate has several ball grooves arranged in a matrix, and a ball is rolled in the ball groove, with the top of the ball protruding from the upper end of the ball groove.

5. The pipeline installation equipment as described in claim 4, characterized in that: When the rope is taut by the traction cylinder, its elasticity satisfies the condition that the displacement range of the frustum-shaped guide head is always within the range projected from the docking hole to the sliding trolley A side.

6. The pipeline installation equipment as described in claim 5, characterized in that: The working platform A and the working platform B are respectively equipped with four laser rangefinders at one end facing the same direction. The working platform A and the working platform B are respectively equipped with a detection plate that works in conjunction with the four laser rangefinders. When the distance detected by the four laser rangefinders is the same, it means that the working platform A and the working platform B are facing each other.

7. The assembly line installation method for pipeline installation equipment as described in claim 6, characterized in that: Includes the following steps: Step 1: Set up work platform A and work platform B relative to each other, and adjust the adjustable height support feet to make the bottom upper surfaces of the two first supports be in a horizontal coplanar position. At the same time, make the distances detected by the four laser rangefinders consistent. This completes the preparation work. Step 2: Place the sliding trolley A inside work platform A and the sliding trolley B inside work platform B. Use the lifting equipment to place the first section of pipe to be installed on the multiple arc-shaped positioning plates on the sliding trolley B to achieve the initial positioning of the first section of pipe relative to the sliding trolley B. Then, use the lifting equipment to place the second section of pipe to be installed on the multiple arc-shaped positioning plates on the sliding trolley A to achieve the initial positioning of the second section of pipe relative to the sliding trolley A. Step 3: Engage the second U-shaped clamp with the outer end of the top of the work platform A at the set position, and engage the first U-shaped clamp with the outer end of the top of the work platform B at the set position. Pass the ropes through the guide holes on their respective sides and connect them to the corresponding traction cylinders. Under the pulling force of the traction cylinders, the ropes are tightened, and the sliding trolleys A and B drive the second section of the pipe to be installed and the first section of the pipe to be installed to be coaxially aligned. Push the opposite ends of the first section of the pipe to be installed and the second section of the pipe to be installed inward until the bottom of the joint of the first section of the pipe to be installed and the second section of the pipe to be installed are aligned with the inner end of the sliding trolley B or the sliding trolley A, respectively. Step 4: In order to overcome the defect of uneven mass distribution on the outer wall caused by the manufacturing process of the pipe to be installed, the fixing mechanism is activated. The two electric cylinders in the same group extend to the same length and fix the first and second sections of the pipe to be installed relative to the sliding trolley B or sliding trolley A through the two arc-shaped pressure plates. At this time, the generatrix of the pipe to be installed is aligned with the generatrix of the arc-shaped positioning plate. Step 5: Guided by the rope, move the sliding trolleys A and B in opposite directions and rotate the cast iron rod out to a set length. The set length refers to the length that matches the insertion depth of the joint of the first and second sections of the pipe to be installed under hot-melt conditions. When hot-melt is required, the hot-melt operation of the joint is completed before the cast iron rod is inserted into the mating hole. Then, the cast iron rod is inserted into the mating hole, and the electromagnet with gradually increasing power tightens the cast iron rod to insert the joint tightly, completing the entire hot-melt process. Under welding conditions, the set length refers to the tight abutment of the joint of the first and second sections of the pipe to be installed when the cast iron rod is attracted to the electromagnet. Step Six: After the first and second sections of the pipe to be installed are connected and installed, release the fixing mechanism and move the working platform A and working platform B to the side of the second section of the pipe to be installed, so that the first section of the pipe to be installed is exposed. Support it with a temporary support frame, adjust the height and level of the working platform A and working platform B so that they are facing each other, and place the second section of the pipe to be installed on the arc-shaped positioning plate of the sliding trolley B. The lifting equipment places the third section of the pipe to be installed on the arc-shaped positioning plate of the sliding trolley A. Repeat the above steps to connect and install the third section of the pipe to be installed with the second section of the pipe to be installed. Continue in this manner until all pipes are installed. After all pipes are installed, the working platform A and working platform B, together with the sliding trolleys A and B, are moved out of the outside of all pipes. Step 7: With the help of lifting equipment, remove the temporary support frame and place the installed pipe in the designated location on the construction site.

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