Construction method for pipeline lifting

Abstract

The invention relates to the technical field of pipeline installation, in particular to a construction method for pipeline lifting, which optimizes the installation steps of a bracket: firstly installing a hoisting assembly of the bracket, and then installing a supporting assembly of the bracket after the pipelines to be installed are lifted, so as to ensure that a plurality of pipelines to be installed can be flatly installed on the bracket. The problem that in existing construction steps, due to the fact that a floor slab is not flat, supports are not flat in installation is solved, and meanwhile the length of a to-be-installed pipeline can not be limited by the interval between adjacent supports. The to-be-installed pipelines are fixed to the lifting frame, then the lifting frame is lifted through the forklift, large-span overall lifting of the to-be-installed pipelines in rows can be achieved, the lifting efficiency of the to-be-installed pipelines is improved, and the safety of the to-be-installed pipelines in the lifting process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline installation, and particularly relates to a construction method for pipeline lifting. Background Art

[0002] Welded pipelines are mainly used to connect various parts of an air conditioning system, such as cold and heat source equipment, air handling equipment, conveying equipment, and terminal devices, etc. In civil building design, steel pipes are generally welded and connected, and the construction process flow of the pipelines to be installed includes: setting out and positioning, bracket fabrication and installation, processing of the pipelines to be installed, hoisting of the pipelines to be installed, butt welding of the pipelines to be installed, flushing and pressure testing, anti-corrosion and heat insulation.

[0003] In traditional construction steps, the following problems exist: Bracket installation is generally perpendicular to the floor surface. Before hoisting the pipelines to be installed, the bracket installed on the floor surface is a bracket with the hoisting component and the supporting component installed integrally. If the floor surface is uneven, the bracket installation will be inclined accordingly, affecting the flatness of the installation; In the hoisting operation of the pipelines to be installed, commonly used hoisting tools are electric or manual hoists. These hoist tools are usually fixed on the building structure by expansion bolts. If the strength of the building structure is insufficient, there is a risk of loosening or even falling off of the expansion bolts during hoisting; The length of the pipelines to be installed hoisted is affected by the bracket spacing. For pipelines to be installed with too long a length, they need to be hoisted into place obliquely, with great construction difficulty; Traditional construction methods usually can only hoist the pipelines to be installed one by one, etc. These problems lead to low pipeline installation efficiency and relatively high safety risks during the construction process. Summary of the Invention

[0004] Aiming at the deficiencies existing in the prior art, the purpose of the present invention is to provide a construction method for pipeline lifting, which can lift multiple pipelines synchronously and improve the efficiency and safety of pipeline installation.

[0005] The technical solution of the present invention provides a construction method for pipeline lifting, including:

[0006] S1. Determine the installation height of the bracket according to the installation height of the pipelines to be installed, and install the hoisting component of the bracket on the structural beam according to the determined installation height. The hoisting component of the bracket includes two hoisting rods, and the two hoisting rods are arranged on the structural beam at intervals along the first direction;

[0007] S2. Use a forklift to transport the lifting frame to one side along the second direction below the hoisting component of the bracket;

[0008] S3. Transport one or more of the pipelines to be installed onto the lifting frame located on the forklift, and the pipelines are arranged along the second direction;

[0009] S4. Lift the lifting frame and the pipeline to be installed thereon by the forklift to a position between the two lifting rods. At this time, the pipeline to be installed is higher than its installation height.

[0010] S5. Install the support assembly of the bracket. The support assembly includes a supporting plate, and connect the two ends of the supporting plate to the bottom of one of the lifting rods respectively.

[0011] S6. Adjust the position of the lifting frame and the pipeline to be installed thereon by the forklift, and roll the pipeline to be installed from the lifting frame onto the supporting plate.

[0012] Wherein, the first direction is perpendicular to the second direction.

[0013] Preferably, the lifting frame includes a handling part. The handling part includes two hollow tubes for the forklift forks to pass through and at least two connecting tubes arranged at intervals. The hollow tubes extend along the first direction, and the two ends of the connecting tubes are respectively fixedly connected to the peripheral side of one of the hollow tubes.

[0014] In step S2, pass the forklift forks through the hollow tubes and lift the lifting frame, and use the forklift to transport the lifting frame to one side along the second direction below the lifting assembly of the bracket.

[0015] Preferably, between step S3 and step S4, there is also a step: set a detachable guardrail around the lifting frame.

[0016] Before rolling the pipeline to be installed from the lifting frame onto the supporting plate, there is also a step: remove the guardrail on one side in the first direction.

[0017] Preferably, the lifting frame further includes a protection part. The protection part includes a plurality of protection tubes. The bottom ends of the protection tubes are fixedly connected above the handling part. At least two protection tubes are spaced and connected to each hollow tube. A cavity for inserting the guardrail is provided in the protection tube.

[0018] The step of setting a detachable guardrail around the lifting frame is specifically: insert the guardrail into the cavity of the lifting frame.

[0019] The step of removing the guardrail on one side in the first direction is specifically: take out the guardrail on one side in the first direction from the cavity.

[0020] Preferably, the lifting frame further includes a fixing part. The fixing part is spaced above the handling part and is fixedly connected to the protection tube. A backstop is provided on the fixing part.

[0021] In the step S3, one or more of the pipes to be installed are transported to the lifting frame on the forklift, and the pipes to be installed are fixed on the anti-retreat device.

[0022] Preferably, the hoisting rod includes a steel plate and a channel steel. The channel steel is fixedly connected to one side of the steel plate. The steel plate is provided with oblong punching holes, and the oblong punching holes extend along the first direction.

[0023] In the step S1, the steel plate and the channel steel are connected. The hoisting rod is installed on the structural beam by fixing expansion bolts in the oblong punching holes.

[0024] Preferably, the bottom of the channel steel is provided with an inclined cut.

[0025] In the step S5, both ends of the supporting plate are respectively connected to the inclined cuts of one of the channel steels.

[0026] Preferably, before the step S3, there is also a step: bending the painted bent pipe of the moon toothbrush into a radian that fits the outer surface of the pipe to be installed, winding the painted bent pipe of the moon toothbrush with a paint cloth, and holding the operating rod of the moon toothbrush to suck the paint on the painted bent pipe of the moon toothbrush to complete the painting of the pipe to be installed.

[0027] Preferably, after the step S6, there is also a step: arranging supplementary frames at intervals along the second direction of the bracket. The structure of the supplementary frame is the same as that of the bracket. The hoisting rod of the supplementary frame is fixedly connected to the floor slab, and the supporting plate of the supplementary frame is located at the bottom end of the pipe to be installed.

[0028] Preferably, each pipe to be installed includes multiple pipe segments arranged along the second direction.

[0029] In the step S1, the hoisting assemblies of multiple brackets are installed on the structural beam according to the determined installation height.

[0030] In the step S2, a forklift is used to transport multiple lifting frames to one side along the second direction below the hoisting assembly of the bracket. The number of forklifts corresponds to the number of lifting frames one by one.

[0031] In the step S3, the pipe segments are transported to the lifting frames on the forklift. One pipe segment of the pipe to be installed is placed on each lifting frame, and the ports of adjacent pipe segments of the same pipe to be installed are connected.

[0032] In the step S4, the lifting frames and the pipe segments thereon are synchronously lifted to the position between the two hoisting rods by multiple forklifts.

[0033] In step S5, the extending direction of the supporting plate is the first direction, and a plurality of the supporting plates are arranged at intervals in the second direction;

[0034] In step S6, the positions of the lifting frame and the pipe section located thereon are synchronously adjusted by a plurality of forklifts, and the pipe section is rolled from the lifting frame onto the supporting plate;

[0035] After step S6, there is also a step: automatically welding a circumferential seam around the port of the pipe section by a welding trolley.

[0036] The beneficial effects of the present invention compared with the prior art are as follows: the installation steps of the support are optimized. First, the hoisting assembly of the support is installed, and then the supporting assembly of the support is installed after the pipe to be installed is lifted. This avoids the inclination of the whole support caused by the uneven floor surface at the installation location, ensures that multiple pipes to be installed can be installed flatly on the support, solves the problem of uneven support installation caused by uneven floor in the existing construction steps, and at the same time, the length of the pipe to be installed can be unrestricted by the interval between adjacent supports; the pipe to be installed is fixed on the lifting frame, and then the lifting frame is lifted by a forklift, which can realize the large-span overall lifting of the rows of pipes to be installed, improve the lifting efficiency of the pipes to be installed and improve the safety of the lifting process of the pipes to be installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Schematic diagram of the installation of the hoisting assembly of the present application and the transportation of the pipe to be installed by a forklift;

[0038] Figure 2 For the present application Figure 1 View in the first direction;

[0039] Figure 3 Schematic diagram of the lifting of the pipe to be installed in the present application;

[0040] Figure 4 For the present application Figure 3 View in the first direction;

[0041] Figure 5 Schematic diagram of the completion of the installation of the supporting assembly in the present application;

[0042] Figure 6 Schematic diagram of the rolling of the pipe to be installed in the present application;

[0043] Figure 7 Schematic diagram of the completion of the installation of the pipe to be installed in the present application;

[0044] Figure 8 Schematic diagram of the installation of the supplementary frame and the welding of the welding trolley in the present application;

[0045] Figure 9 Schematic diagram of the structure of the hoisting rod in the present application;

[0046] Figure 10 Front view of the monthly toothbrush of this application

[0047] Figure 11 Side view of the monthly toothbrush of this application

[0048] Figure 12 Top view of the lifting frame of this application

[0049] In the figure

[0050] 1. Pipe to be installed; 11. Pipe section; 2. Lifting frame; 21. Guardrail; 22. Handling part; 221. Hollow pipe; 222. Connecting pipe; 23. Protection part; 231. Protection pipe; 2311. Cavity; 24. Fixing part; 241. Backstop; 3. Bracket; 31. Hoisting assembly; 311. Hoisting rod; 3111. Steel plate; 31111. Oblong punching; 3112. Channel steel; 31121. Oblique cut; 32. Support assembly; 321. Supporting plate; 322. Pipe support; 4. Monthly toothbrush; 41. Painted bent pipe; 42. Pipe clamp; 43. Operating rod; 5. Structural beam; 6. Floor slab; 7. Forklift; 8. Welding trolley; 9. Supplementary frame

[0051] X - First direction; Y - Second direction Specific embodiments

[0052] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application

[0053] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance

[0054] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a replaceable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0055] Combined with Figure 1-11 As shown, a construction method for pipeline lifting includes:

[0056] S1. Determine the installation height of the support 3 according to the installation height of the pipeline 1 to be installed, and install the hoisting assembly 31 of the support 3 on the structural beam 5 according to the determined installation height. The hoisting assembly 31 of the support 3 includes two hoisting rods 311, and the two hoisting rods 311 are arranged on the structural beam 5 at intervals along the first direction X;

[0057] S2. Use the forklift 7 to transport the lifting frame 2 to one side along the second direction Y below the hoisting assembly 31 of the support 3;

[0058] S3. Transport one or more of the pipelines 1 to be installed onto the lifting frame 2 located on the forklift 7, and the pipelines are arranged along the second direction Y;

[0059] S4. Lift the lifting frame 2 and the pipelines 1 to be installed thereon by the forklift 7 to a position between the two hoisting rods 311. At this time, the pipeline 1 to be installed is higher than its own installation height;

[0060] S5. Install the support assembly 32 of the support 3. The support assembly 32 includes a bearing plate 321, and connect the two ends of the bearing plate 321 to the bottom of one of the hoisting rods 311 respectively;

[0061] S6. Adjust the position of the lifting frame 2 and the pipelines 1 to be installed thereon by the forklift 7, and roll the pipeline 1 to be installed from the lifting frame 2 onto the bearing plate 321;

[0062] Wherein, the first direction X is perpendicular to the second direction Y.

[0063] In this embodiment, in step S1, according to the comprehensive pipeline layout result, the installation height of the pipeline 1 to be installed is determined. Using a laser level, the elevation line and the center line of the pipeline 1 to be installed are determined and marked. Different from the prior art where the installed bracket 3 is directly set below the floor slab 6 as a whole, this application optimizes the installation steps. First, the hoisting component 31 of the bracket 3 is installed on the structural beam 5, so the length of the pipeline 1 to be installed lifted at one time can be unrestricted by the spacing of the brackets 3. The number of installed brackets 3 is determined according to factors such as the actual length and weight of the pipeline 1 to be installed. If multiple brackets 3 are installed, the multiple brackets 3 are arranged at intervals along the second direction Y. In this embodiment, two brackets 3 are installed as an example. In step S2, the forklift 7 transports the lifting frame 2 between the hoisting components 31 of the two installed brackets 3. In step S3, one or more pipelines 1 to be installed are transported to above the lifting frame 2 one by one. To lift the pipeline 1 to be installed more safely, the center position of the pipeline 1 to be installed is located above the lifting frame 2. In step S4, the forklift 7 slowly lifts the lifting frame 2 and the pipeline 1 to be installed thereon. For the pipeline 1 to be installed with too long length, multiple forklifts 7 can be used corresponding to multiple lifting frames 2 one by one to achieve the synchronous overall lifting of the pipeline 1 to be installed. Therefore, the length of the pipeline 1 to be installed lifted at one time can be unrestricted. In step S5, a supporting plate 321 is welded using a hydraulic lifting platform. For the case where the pipeline 1 to be installed is a pipeline that needs thermal insulation, after the supporting plate 321 is welded, a pipe support 322 is installed above it. The number of pipe supports 322 is the same as the number of pipelines 1 to be installed. Exemplarily, the pipeline 1 to be installed is an air-conditioning chilled water pipe, and the pipe support 322 is a wooden pipe support 322 that plays a role in thermal insulation. After the pipe support 322 is set, it should be ensured that when the pipeline 1 to be installed is installed on the pipe support 322, the distance between adjacent pipelines 1 to be installed is not less than 300 mm. In step S6, the forklift 7 lowers the pipeline 1 to be installed, for example, to the elevation of the top surface of the pipe support 322. For the case where there are multiple pipelines 1 to be installed, first, the first pipeline 1 to be installed on one side in the first direction X is rolled onto the supporting plate 321 or the corresponding pipe support 322. The forklift 7 moves to the other side in the first direction X and rolls the second pipeline 1 to be installed onto the supporting plate 321 or the corresponding pipe support 322, and so on, until all the pipelines 1 to be installed on the lifting frame 2 are rolled onto the supporting plate 321 or the corresponding pipe supports 322.

[0064] Through the pipeline lifting construction method of the present application, the installation steps of the bracket 3 are optimized. The lifting component 31 of the bracket 3 is installed first, and the supporting component 32 of the bracket 3 is installed after the pipeline 1 to be installed is lifted, ensuring that multiple pipelines 1 to be installed can be installed flatly on the bracket 3, solving the problem of uneven installation of the bracket 3 due to the uneven floor 6 in the existing construction steps; the pipeline 1 to be installed is fixed on the lifting frame 2, and then the lifting frame 2 is lifted by a forklift 7, which can realize the overall lifting of a row of pipelines with a large span, improve the lifting efficiency of the pipeline 1 to be installed, and improve the safety of the lifting process of the pipeline 1 to be installed.

[0065] Further, the lifting frame 2 includes a transporting portion 22, the transporting portion 22 includes two hollow tubes 221 for the forks of the forklift 7 to pass through and at least two spaced connecting tubes 222, the hollow tubes 221 extend along the first direction X, and the two ends of the connecting tubes 222 are respectively fixedly connected to the circumference of one of the hollow tubes 221;

[0066] In the step S2 , the fork of the forklift 7 is passed through the hollow tube 221 and the lifting frame 2 is lifted, and the lifting frame 2 is transported to one side along the second direction Y below the lifting assembly 31 of the bracket 3 by the forklift 7 .

[0067] In this embodiment, the lifting frame 2 is welded by steel pipes, the diameter of the hollow pipe 221 is compatible with the fork of the forklift 7, the manufacturing materials of the lifting frame 2 are easy to obtain, and the manufacturing method is simple; the forklift 7 lifts the pipeline 1 to be installed through the lifting frame 2, which is conducive to improving the lifting efficiency of the pipeline 1 to be installed and reducing safety risks.

[0068] Furthermore, between the step S3 and the step S4, there is also a step of: providing a detachable guardrail 21 around the lifting frame 2;

[0069] Before rolling the pipeline 1 to be installed from the lifting frame 2 to the supporting plate 321 , the method further includes the step of removing the guardrail 21 located on one side of the first direction X.

[0070] In this embodiment, in order to prevent the pipeline 1 to be installed from accidentally rolling out of the lifting frame 2 during the lifting process, thereby posing a safety risk to the operator, a guardrail 21 is provided around the lifting frame 2 for easy installation and disassembly.

[0071] Furthermore, the lifting frame 2 further includes a protection portion 23, the protection portion 23 includes a plurality of protection tubes 231, the bottom ends of the protection tubes 231 are fixedly connected to the top of the transport portion 22, at least two protection tubes 231 are connected to each hollow tube 221 at intervals, and a cavity 2311 is provided in the protection tube 231 for inserting the guardrail 21;

[0072] The steps of arranging the detachable guardrail 21 around the lifting frame 2 are specifically as follows: inserting the guardrail 21 into the cavity 2311 of the lifting frame 2;

[0073] The step of removing the guardrail 21 located on one side of the first direction X is specifically as follows: taking the guardrail 21 located on one side of the first direction X out of the cavity 2311 .

[0074] In this embodiment, the protective tube 231 and the guardrail 21 are both steel tubes, which are easily available materials, and the diameter of the guardrail 21 is smaller than the diameter of the protective tube 231. When the guardrail 21 is inserted into the cavity 2311, the guardrail 21 is higher than the top of the protective tube 231. A guardrail 21 that is easy to install and disassemble can be made using simple materials.

[0075] Furthermore, the lifting frame 2 further includes a fixing portion 24, which is spaced apart above the transporting portion 22 and fixedly connected to the protection tube 231, and a stopper 241 is provided on the fixing portion 24;

[0076] In the step S3 , one or more pipes 1 to be installed are transported to the lifting frame 2 on the forklift 7 , and the pipes 1 to be installed are fixed on the backstop 241 .

[0077] In this embodiment, in order to ensure the lifting height of the pipe 1 to be installed in the subsequent steps, the height difference between the top of the fixing part 24 and the top of the transport part 22 is H, the installation height of the pipe 1 to be installed is h1, the maximum height lifted by the forklift 7 is h2, and H≥h1-h2. The stopper 241 provided on the fixing part 24 is a rubber stopper 241, and its bottom is in an arc shape that fits the outer periphery of the steel pipe of the fixing part 24. By providing the stopper 241, the pipe can be effectively prevented from rolling during the lifting process.

[0078] In the case where there are multiple pipes 1 to be installed, in step S6, after the guardrail 21 located on one side of the first direction X is taken out from the cavity 2311, the backstop 241 corresponding to the first pipe 1 to be installed is removed, and the first pipe 1 to be installed is rolled from the lifting frame 2 to the supporting plate 321, the forklift 7 is moved along the other side of the first direction X, and the backstop 241 of the second pipe 1 to be installed is removed, and then the second pipe 1 to be installed is rolled, and this process is repeated until all the pipes 1 to be installed on the lifting frame 2 are rolled onto the supporting plate 321.

[0079] Further, the hoisting rod 311 includes a steel plate 3111 and a channel steel 3112, the channel steel 3112 is fixedly connected to one side of the steel plate 3111, and the steel plate 3111 is provided with an oblong punching hole 31111, and the oblong punching hole 31111 extends along the first direction X;

[0080] In the step S1, the steel plate 3111 and the channel steel 3112 are connected, and the hoisting rod 311 is installed on the structural beam 5 by fixing expansion bolts in the oblong punching holes 31111.

[0081] In this embodiment, four oblong punching holes 31111 are reserved on the steel plate 3111. During the installation process, if the expansion bolts encounter steel bars in the building structure, the bracket 3 cannot be completely fixed. The oblong punching holes 31111 provide space for adjusting the installation position of the expansion bolts when encountering structural steel bars, ensuring that the steel plate 3111 is firmly stressed and facilitating the stable support of the pipeline by the bracket 3 on the building structure.

[0082] Further, an inclined cut 31121 is provided at the bottom of the channel steel 3112;

[0083] In the step S5, both ends of the supporting plate 321 are respectively connected to the inclined cut 31121 of one of the channel steels 3112.

[0084] In this embodiment, the steel plate 3111 and the channel steel 3112 are welded into a whole. In order to increase the welding area between the supporting plate 321 and the channel steel 3112, a 45° inclined cut 31121 is reserved at the bottom of the channel steel 3112.

[0085] Further, before the step S3, there is also a step: bending the painted bend pipe 41 of the moon-shaped toothbrush 4 into a radian that fits the outer surface of the pipeline to be installed 1, winding the paint cloth around the painted bend pipe 41 of the moon-shaped toothbrush 4, and holding the operating rod 43 of the moon-shaped toothbrush 4 to suck the paint on the painted bend pipe 41 of the moon-shaped toothbrush 4 to complete the painting of the pipeline to be installed 1.

[0086] In this embodiment, before the step S3, the outer surface of the pipeline 1 to be installed needs to be painted by the monthly toothbrush 4. The monthly toothbrush 4 includes a painted elbow 41, a pipe clamp 42 and an operating rod 43. The painted elbow 41 is fixedly connected to the operating rod 43 through the pipe clamp 42. The monthly toothbrush 4 is mainly made of PVC wire pipes and PVC pipe clamps 42, and is overall lightweight. The PVC painted elbow 41 can be bent into any arc according to the radian of the pipeline 1 to be installed. After the painted elbow 41 is bent into an arc that fits the outer surface of the pipeline 1 to be installed, the paint cloth is evenly wound around the outer surface of the painted elbow 41 while maintaining the arc of the painted elbow 41. After the operator holds the operating rod 43 to make the paint cloth of the painted elbow 41 absorb the paint, the monthly toothbrush 4 is pushed along the axial direction of the pipeline 1 to be installed, and the painting of more than 1 / 3 of the area of the outer surface of the pipeline 1 to be installed is completed at one time. After one painting, the pipeline 1 to be installed is turned over to paint its unpainted outer surface until the outer surface of the pipeline 1 to be installed is completely painted. Operating the monthly toothbrush 4 in this way can easily complete the large-area painting work along the axial direction of the pipeline 1 to be installed at one time, reduce the number of turnovers of the pipeline 1 to be installed and the number of repeated painting times, ensure the uniformity of the coating, and improve the efficiency and quality of the painting treatment of the pipeline 1 to be installed.

[0087] Further, after the step S6, there is also a step: supplementary brackets 9 are arranged at intervals along the second direction Y of the bracket 3. The structure of the supplementary bracket 9 is the same as that of the bracket 3. The lifting rod 311 of the supplementary bracket 9 is fixedly connected to the floor slab 6, and the supporting plate 321 of the supplementary bracket 9 is located at the bottom end of the pipeline 1 to be installed.

[0088] In this embodiment, after all the pipelines 1 to be installed are installed, according to actual needs, on the basis of the existing brackets 3, supplementary brackets 9 are appropriately arranged in the intervals of the brackets 3 to ensure that the brackets 3 and the supplementary brackets 9 are reasonably stressed and jointly support the pipelines 1 to be installed that have been installed. For the case where the pipeline 1 to be installed is a heat-insulated pipeline, a pipe support 322 is also provided on the supporting plate 321 of the supplementary bracket 9, and the pipe support 322 is connected to the pipeline 1 to be installed in a one-to-one correspondence.

[0089] Further, each pipeline 1 to be installed includes a plurality of pipe segments 11 arranged along the second direction Y;

[0090] In the step S1, the hoisting components 31 of a plurality of brackets 3 are installed on the structural beam 5 according to the determined installation height;

[0091] In the step S2, a forklift 7 is used to transport a plurality of lifting frames 2 to one side along the second direction Y below the hoisting components 31 of the bracket 3, and the number of the forklifts 7 corresponds to the number of the lifting frames 2 one by one;

[0092] In the step S3, the pipe section 11 is transported to the lifting frame 2 located on the forklift 7, and one pipe section 11 of the pipeline 1 to be installed is placed on each lifting frame 2, and the ports of the adjacent pipe sections 11 of the same pipeline 1 to be installed are connected;

[0093] In the step S4, the lifting frame 2 and the pipe section 11 thereon are synchronously lifted to the position between the two lifting rods 311 by a plurality of forklifts 7;

[0094] In the step S5, the extending direction of the supporting plate 321 is the first direction X, and a plurality of supporting plates 321 are arranged at intervals in the second direction Y;

[0095] In the step S6, the positions of the lifting frame 2 and the pipe section 11 thereon are synchronously adjusted by a plurality of forklifts 7, and the pipe section 11 is rolled from the lifting frame 2 onto the supporting plate 321;

[0096] After the step S6, the following step is further included: an automatic circumferential welding is performed around the port of the pipe section 11 by a welding trolley 8.

[0097] In some embodiments, the pipe section 11 is a steel pipe with a diameter of DN200, the welding trolley 8 is a magnetic adsorption type welding trolley 8, and preferably an SCOWELD intelligent welder is adopted, and the welding qualification rate reaches 99.9%. After the step S6, the welding trolley 8 is used to automatically travel along the circumferential seam of the pipe section 11, and the welding of the pipeline 1 to be installed is completed through a preset program, and the welding speed adjustment range is 100-300 mm / min.

[0098] In some embodiments, this method can simultaneously lift multiple pipe sections 11 of one pipeline 1 to be installed, and improve the installation efficiency and welding efficiency of the pipe section 11.

[0099] In some embodiments, this method can simultaneously lift multiple pipe sections 11 of multiple pipelines 1 to be installed placed in a row. That is, in the step S3, one pipe section 11 of each pipeline 1 to be installed is placed on one lifting frame 2, which improves the lifting efficiency of the pipe section 11. And the neat arrangement and synchronous lifting of the pipe sections 11 also facilitate the welding trolley 8 to quickly perform welding work. There is a distance of not less than 300 mm between the pipe sections 11 of adjacent pipelines 1 to be installed, ensuring that the welding trolley 8 can smoothly perform automatic circumferential welding around the pipe section 11. Compared with manual welding, the welding trolley 8 can complete automatic welding at high altitude as long as the power is turned on, effectively reducing the high-altitude operation of construction workers, improving construction safety, welding quality and efficiency.

[0100] This specification discloses the present application with reference to the accompanying drawings, and also enables those skilled in the art to implement the present application, including manufacturing and using any device or system, adopting appropriate materials, and using any combined methods. The scope of the present application is defined by the claimed technical solution, and includes other examples that occur to those skilled in the art. As long as such other examples include structural elements that are not different from the literal language of the claimed technical solution, or such other examples contain equivalent structural elements that have no substantial difference from the literal language of the claimed technical solution, then such other examples should be considered to be within the scope of protection determined by the claimed technical solution of the present application.

Claims

1. A construction method for pipeline lifting, characterized in that, Including: S1. Determine the installation height of the bracket according to the installation height of the pipeline to be installed, and install the hoisting assembly of the bracket on the structural beam according to the determined installation height. The hoisting assembly of the bracket includes two hoisting rods, and the two hoisting rods are arranged on the structural beam at intervals in the first direction; S2. Use a forklift to transport the lifting frame to one side along the second direction below the hoisting assembly of the bracket; S3. Transport one or more of the pipelines to be installed onto the lifting frame located on the forklift, and the pipelines are arranged along the second direction; S4. Lift the lifting frame and the pipeline to be installed thereon by the forklift to a position between the two hoisting rods. At this time, the pipeline to be installed is higher than its own installation height; S5. Install the support assembly of the bracket. The support assembly includes a bearing plate, and connect the two ends of the bearing plate to the bottom of one of the hoisting rods respectively; S6. Adjust the position of the lifting frame and the pipeline to be installed thereon by the forklift, and roll the pipeline to be installed from the lifting frame onto the bearing plate; Wherein, the first direction is perpendicular to the second direction.

2. The construction method for pipeline lifting according to claim 1, characterized in that, The lifting frame includes a handling part. The handling part includes two hollow tubes for the forklift forks to pass through and at least two connecting tubes arranged at intervals. The hollow tubes extend along the first direction, and the two ends of the connecting tube are respectively fixedly connected to the peripheral side of one of the hollow tubes; In step S2, pass the forklift forks through the hollow tubes and lift the lifting frame, and use the forklift to transport the lifting frame to one side along the second direction below the hoisting assembly of the bracket.

3. The construction method of pipeline lifting according to claim 2, characterized in that, Between step S3 and step S4, there is also a step: arrange a detachable guardrail around the lifting frame; Before rolling the pipeline to be installed from the lifting frame onto the bearing plate, there is also a step: remove the guardrail on one side in the first direction.

4. The construction method for pipeline lifting according to claim 3, characterized in that, The lifting frame further includes a protection part. The protection part includes multiple protection tubes. The bottom ends of the protection tubes are fixedly connected above the handling part. At least two protection tubes are connected to each hollow tube at intervals. A cavity for inserting the guardrail is provided in the protection tube; The step of arranging a detachable guardrail around the lifting frame is specifically: insert the guardrail into the cavity of the lifting frame; The step of removing the guardrail on one side in the first direction is specifically: take out the guardrail on one side in the first direction from the cavity.

5. The construction method of pipeline lifting according to claim 4, characterized in that, The lifting frame further includes a fixing part. The fixing part is arranged above the handling part at intervals and is fixedly connected to the protection tube. A backstop is provided on the fixing part; In step S3, transport one or more of the pipelines to be installed onto the lifting frame located on the forklift, and fix the pipeline to be installed on the backstop.

6. The construction method of pipeline lifting according to claim 1, characterized in that, The hoisting rod includes a steel plate and a channel steel. The channel steel is fixedly connected to one side of the steel plate. An oblong punching is provided on the steel plate, and the oblong punching extends along the first direction; In the step S1, the steel plate and the channel steel are connected, and the lifting rod is installed on the structural beam by fixing expansion bolts in the oblong punching holes.

7. The construction method of pipeline lifting according to claim 6, characterized in that, The bottom of the channel steel is provided with an inclined cut. In the step S5, both ends of the supporting plate are respectively connected to the inclined cuts of one of the channel steels.

8. The construction method of pipeline lifting according to claim 1, characterized in that, Before the step S3, there is also a step: bending the painted elbow of the moon-shaped toothbrush into a curvature that fits the outer surface of the pipeline to be installed, winding the painted elbow of the moon-shaped toothbrush with a paint cloth, and holding the operating rod of the moon-shaped toothbrush to suck paint with the painted elbow of the moon-shaped toothbrush to complete the painting of the pipeline to be installed.

9. The construction method for pipeline lifting according to any one of claims 1-8, characterized in that, After the step S6, there is also a step: arranging supplementary frames at intervals along the second direction of the bracket, the structure of the supplementary frame is the same as that of the bracket, the lifting rod of the supplementary frame is fixedly connected to the floor slab, and the supporting plate of the supplementary frame is located at the bottom end of the pipeline to be installed.

10. The construction method for pipeline lifting according to any one of claims 1-9, characterized in that, Each pipeline to be installed includes multiple pipe segments arranged along the second direction. In the step S1, the lifting assemblies of multiple brackets are installed on the structural beam according to the determined installation height. In the step S2, a forklift is used to transport multiple lifting frames to one side along the second direction below the lifting assemblies of the brackets, and the number of forklifts corresponds one-to-one to the number of lifting frames. In the step S3, the pipe segments are transported to the lifting frames located on the forklifts, and one pipe segment of the pipeline to be installed is placed on each lifting frame, and the ports of adjacent pipe segments of the same pipeline to be installed are connected. In the step S4, the forklifts are used to synchronously lift the lifting frames and the pipe segments located thereon to the position between the two lifting rods. In the step S5, the extending direction of the supporting plate is the first direction, and multiple supporting plates are arranged at intervals along the second direction. In the step S6, the forklifts are used to synchronously adjust the positions of the lifting frames and the pipe segments located thereon, and the pipe segments are rolled from the lifting frames onto the supporting plates. After the step S6, there is also a step: automatically performing circumferential seam welding around the ports of the pipe segments by a welding trolley.

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