Building fire-fighting pipeline replacement construction method

Abstract

The invention relates to the technical field of fire-fighting pipeline installation construction, and provides a building fire-fighting pipeline replacement construction method aiming at the situation that construction is difficult when a traditional fire-fighting air pipe is replaced and installed, the building fire-fighting pipeline replacement construction method comprises the following steps that S1, a plurality of pipe sections are spliced to form pipeline sections, and supporting hangers are installed on the pipeline sections; s2, the installation position of a fire-fighting air pipe is calibrated on the building roof according to the design position of the construction drawing; s3, the lifting equipment is moved to the position below the installation position of the pipeline section; s4, the pipeline sections are jacked to the corresponding installation positions through lifting equipment, and the supporting and hanging frames on the pipeline sections are fixed to a building top plate; s5, the lifting equipment is moved to the position below the installation position of the next pipeline section; s6, repeating the step S4; s7, the flange structures of the pipe joints at the ends, close to each other, of the adjacent pipeline sections are connected and fixed; and S8, the steps from S5 to S7 are repeated till installation of the remaining pipeline sections is completed. The fire-fighting air pipe has the effect of reducing the replacement and installation difficulty of the fire-fighting air pipe.

Description

Technical Field

[0001] This application relates to the technical field of fire protection pipeline installation and construction, and in particular to a method for replacing building fire protection pipelines. Background Technology

[0002] Fire-fighting ventilation ducts are used to quickly remove dense smoke and toxic gases from buildings and to provide ventilation during a fire. They are widely used in various types of buildings, including residential buildings, commercial complexes, industrial plants, and high-rise buildings.

[0003] After prolonged use, the materials of fire ducts will gradually age, especially in humid or corrosive environments, where they are more prone to rust and damage, affecting airflow and failing to meet ventilation and smoke extraction efficiency requirements during a fire. Therefore, it is necessary to regularly inspect fire ducts and replace damaged ones in a timely manner.

[0004] Currently, fire-fighting ducts are usually assembled from several pipe sections, which are mostly made of galvanized steel plates or stainless steel plates. The pipe sections are usually equipped with flange structures at both ends for splicing, fixing and sealing.

[0005] When replacing and installing fire ducts, the main method is to use ceiling-mounted supports and hangers. Specifically, the supports and hangers are first fixed on the top of the building according to the duct design and installation height. Then, several pipe sections are assembled to form a pipe segment. Finally, the assembled pipe segment is sent as a whole to the support beam of the corresponding support and hanger. After adjusting the position, the pipe segment is fixed to the support beam of the support and hanger using connectors to complete the installation.

[0006] Regarding the aforementioned related technologies, such as Figure 1 Due to the limitations imposed by the two hangers 12 of the support 1, the overall installation area of ​​the support 1 is narrow and the operating space is extremely limited. The assembled pipe segment 2 is large in volume and heavy in weight. In actual construction, after the initial movement is made into place by a lifting vehicle, the position needs to be adjusted multiple times with manual assistance before the pipe segment 2 can be moved between the two hangers 12 of the support 1. The operation efficiency is low, and the operators need to work at height for a long time, which poses certain safety hazards. Therefore, there is room for improvement. Summary of the Invention

[0007] To further reduce the difficulty of replacing and installing fire protection ducts, this application provides a construction method for replacing building fire protection pipes.

[0008] This application provides a construction method for replacing building fire protection pipelines, which adopts the following technical solution: A method for replacing building fire protection pipes includes the following steps: S1: Pipe segment assembly: Several pipe sections are spliced ​​together to form a pipe segment, and supports and hangers are installed on the pipe segment; S2: Measurement and layout: Mark the installation position of the fire duct on the roof of the building according to the design position on the construction drawings; S3: Lifting equipment in place: Move the lifting equipment to below the installation position of the pipe section; S4: Pipe segment installation: The pipe segment is lifted to the corresponding installation position using a lifting device, and the supports and hangers on the pipe segment are fixed to the building roof. S5: Lifting Equipment Relocation: Move the lifting equipment to below the installation position of the next pipe section; S6: Repeat step S4; S7: Pipe segment connection and fixing: Connect and fix the flange structure of the pipe segment at the nearest end of the adjacent pipe segment; S8: Repeat steps S5 to S7 until the installation of the remaining pipe sections is completed.

[0009] By adopting the above technical solution, the pipe supports are pre-installed on the pipe segments, and then the pipe segments are lifted into place and the supports are fixed using lifting equipment to complete the installation and fixing of the pipe segments. Compared with the traditional construction method of fixing the supports first and then inserting the pipe segments into the support rods, this method avoids the need to insert and adjust the pipe segments between the two rods of the supports, effectively improving the overall construction efficiency. At the same time, it eliminates the need for long-term high-altitude work, effectively reducing the safety hazards of high-altitude work.

[0010] Preferably, the lifting device includes a base, a support seat and a lifting drive component are provided on the base, the support seat is used for placing pipe segments, and the lifting drive component is used to drive the support seat to move vertically up and down; In step S4, when the pipe segment is raised by the lifting device, the pipe segment is placed on the support base; then the support base is moved upward by the lifting drive until the pipe segment is lifted into place.

[0011] By adopting the above technical solution, the pipe segment is smoothly moved to the designated height using the lifting drive component and the support base, which facilitates the installation of the pipe segment. At the same time, the pipe segment can be temporarily supported to limit the displacement of the pipe segment when it is fixed.

[0012] Preferably, the support frame includes a support beam, and the two ends of the support beam are vertically connected to hangers; The top of the support base is provided with two parallel limiting rods corresponding to the support beam, and the two limiting rods form a receiving groove for the support beam to be embedded. In step S1, when installing the supports and hangers, the support beam of the supports and hangers is fixed at the bottom of the middle position of the pipe segment; In step S3, when placing the pipe segment to the support seat of the lifting equipment, the support beam of the pipe segment's support bracket is embedded into the receiving groove formed by the two limiting rods, and the bottom of the pipe segment abuts against the two limiting rods.

[0013] By adopting the above technical solution, the receiving groove formed by the two limiting rods on the support seat is used to lock and limit the support beam of the support and hanger, which helps to improve the placement stability of the pipe segment on the support seat and avoid the situation where the pipe segment is unstable when placed on the support seat due to the support beam of the support and hanger. This also helps the lifting equipment to move the pipe segment upward more stably.

[0014] Preferably, the base is equipped with several casters at its bottom.

[0015] By adopting the above technical solution, the base of the lifting equipment can be moved flexibly by the casters, which makes it easy to quickly move the lifting equipment from under the installed pipe segment to the installation position of the next pipe segment during the construction process, saving the time of moving the lifting equipment and further improving construction efficiency.

[0016] Preferably, the support base is further provided with a positioning component, which includes two positioning rods and two positioning drive members; the two positioning rods are respectively supported on opposite sides of the support base, and the two positioning drive members are respectively used to drive the two positioning rods to move in opposite directions. In step S3, after the pipe segment is placed on the support seat of the lifting equipment, the two positioning rods are driven by two positioning drive components to abut against both sides of the pipe segment to clamp and position the pipe segment.

[0017] By adopting the above technical solution, the positioning components are used to clamp and position the pipe segments in both directions. This effectively limits the pipe segments from shifting forward and backward and rotating on the support base, further improving the stability of the pipe segments during placement and lifting. It avoids safety hazards such as displacement or detachment of the pipe segments during upward movement. At the same time, it ensures that the flange structures of adjacent pipe segments are aligned after the pipe segments are lifted into place, which facilitates the connection of the flange structures of adjacent pipe segments and helps to improve the accuracy and efficiency of pipe connection.

[0018] Preferably, the base is further provided with a limiting travel component at its tail end; The limiting travel assembly includes a limiting seat; both ends of the limiting seat are provided with limiting guide portions; each limiting guide portion includes a support rod, both ends of which extend out from both sides of the limiting seat, and both ends of the support rod are supported with limiting guide wheels; the limiting guide wheels at both ends of the support rod form snap-fit ​​grooves for the pipe section to be embedded. The end of the support rod is provided with a limit drive component corresponding to the limit guide wheel component, and the limit drive components at both ends of the support rod are used to cooperate to drive the two limit guide wheel components to move relative to each other. In step S5, when the lifting device is moved from the initial pipe segment to the installation position of the next pipe segment, the limiting seat at the tail end of the base of the lifting device is moved to the bottom of the initial pipe segment, and the two limiting guide wheels of the limiting guide part of the limiting seat abut against both sides of the pipe segment of the initial pipe segment. During the movement of the lifting equipment, the limit seat moves along the pipe segment by abutting against two limit guide wheels on both sides of the pipe segment through the limit guide part; During the movement of the lifting equipment, when the two limiting guide wheels of the limiting guide part at one end of the limiting seat approach the flange structure of the pipe segment or the lifting rod of the support, the limiting drive part of the limiting guide part at that end drives the corresponding limiting guide wheel away from the pipe segment; at the same time, the limiting guide wheel of the limiting guide part at the other end remains in contact with the pipe segment.

[0019] By adopting the above technical solution, the limiting guide wheels at both ends of the limiting seat abut against the pipe sections of the installed pipeline segment, ensuring that the lifting equipment can always move along the designed route of the pipeline segment during relocation. This eliminates the need for repeated positioning adjustments when the lifting equipment moves to the next pipeline segment installation position, effectively reducing positioning time and improving construction efficiency. Furthermore, the limiting guide wheels at both ends of the limiting seat allow the lifting equipment to avoid obstacles such as flange structures or lifting rods during movement. When one end of the limiting guide wheel approaches an obstacle, the limiting drive at that end can drive the corresponding limiting guide wheel away from the pipeline segment, thus avoiding the obstacle. Simultaneously, the limiting guide wheel at the other end remains in contact with the pipeline segment to maintain limiting and guiding the lifting equipment, ensuring that the lifting equipment does not deviate from the pipeline segment installation route during relocation.

[0020] Preferably, the limiting travel assembly further includes a limiting bracket, which is located at the bottom of the limiting seat. An adjustment drive is provided on the top of the limiting bracket corresponding to the limiting seat, and the adjustment drive is used to drive the limiting seat to move vertically.

[0021] By adopting the above technical solution, the limit seat is moved vertically by adjusting the drive component. On the one hand, the height of the limit seat can be flexibly adjusted to adapt to pipe sections of different diameters. On the other hand, after construction is completed, when the lifting equipment does not need to be moved, the limit seat can be moved down by adjusting the drive component, so that the limit guide wheel can be disengaged from the pipe section, making it easy for the lifting equipment to be removed from the pipe section.

[0022] Preferably, a connecting rod is provided between the support rods of the two limiting guide portions.

[0023] By adopting the above technical solution, the support rods of the two limiting guide parts are connected by a connecting rod, which helps to improve the overall structural strength of the limiting travel component and prevents the limiting guide parts from deforming or shifting due to force during the movement of the lifting equipment.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The method of installing pipe sections in stages and pre-installing supports and hangers replaces the traditional method of fixing supports and hangers first and then hoisting pipe sections to the two hangers of the supports and hangers. This eliminates the need to install and adjust the position of pipe sections in narrow spaces, effectively reducing the difficulty of replacing fire ducts, reducing the amount of high-altitude work, and reducing construction safety hazards.

[0025] 2. By setting two limiting rods on the support base, the two limiting rods form a receiving groove. When placing the pipe segment, the support beam at the bottom of the pipe segment can be embedded into the receiving groove, which is conducive to the stable placement of the pipe segment.

[0026] 3. With the setting of limit guide parts at both ends of the limit seat, when the lifting equipment moves, the limit guide wheels of the limit guide parts can abut against both sides of the installed pipe segment to guide and limit the lifting equipment. This helps the lifting equipment to move quickly and accurately to the next installation position of the pipe segment. When the limit guide parts are close to obstacles such as flanges and hangers of the pipe segment, the limit guide wheels of one end of the limit guide parts can be disengaged from the pipe segment, while the limit guide wheels of the other end of the limit guide parts continue to abut against the pipe segment fittings. This achieves obstacle avoidance while maintaining the guidance and limitation of the lifting equipment. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram used in this application to illustrate an existing support and hanger.

[0028] Figure 2 This is a schematic diagram used in this application to illustrate the connection between pipe segments and supports.

[0029] Figure 3 This is a schematic diagram used in this application to illustrate the installation status of pipe segments.

[0030] Figure 4 This is a schematic diagram used in this application to illustrate the state of a pipe segment being moved up and down via a lifting device.

[0031] Figure 5 This is a structural schematic diagram used in this application to illustrate the lifting equipment.

[0032] Figure 6 This is a structural schematic diagram used in this application to illustrate the support base.

[0033] Figure 7This is a schematic diagram of the limiting and guiding structure used in this application.

[0034] Figure 8 yes Figure 7 Enlarged schematic diagram of part A in the middle.

[0035] Explanation of reference numerals in the attached figures: 1. Support bracket; 11. Support beam; 12. Hanger rod; 2. Pipe section; 3. Lifting equipment; 31. Base; 311. Casters; 32. Support seat; 320. Limiting rod; 321. Positioning rod; 322. Positioning drive component; 33. Lifting drive component; 34. Limiting travel assembly; 340. Limiting bracket; 3401. Adjustment drive component; 341. Limiting seat; 342. Limiting guide part; 3421. Support rod; 3422. Connecting rod; 3423. Mounting seat; 3424. Limiting guide wheel component; 3425. Limiting drive component. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0037] In this embodiment, refer to Figure 1 The support frame 1 includes a support beam 11, and the two ends of the support beam 11 are vertically fixed with hangers 12 by bolts.

[0038] This application discloses a construction method for replacing building fire protection pipes, referring to... Figure 1 This includes the following steps: S1: Pipe segment 2 assembly: Refer to Figure 1 and Figure 2 The specific steps are as follows: S1.1: The three pipe sections are spliced ​​together to form pipe section 2. The flanges at the nearest ends of adjacent pipe sections are connected and fixed with bolts and nuts. Before connecting adjacent pipe sections, a sealing ring is applied to the flange contact surface to ensure the connection between adjacent pipe sections is airtight. When tightening the bolts, a diagonal and even tightening method is used to ensure that the bolt tightening force is consistent and to avoid gaps at the flange interface.

[0039] S1.2: Install support bracket 1: Fix the support beam 11 of support bracket 1 to the bottom of the middle pipe section 2 with angle iron; and make the two hangers 12 of support bracket 1 located on opposite sides of the corresponding pipe section.

[0040] S2: Measurement and Layout: Mark the installation positions of the fire ducts on the building roof according to the design locations on the construction drawings. (Refer to...) Figure 2 and Figure 3 The specific steps are as follows: S2.1: Positioning reference: Based on the design direction and installation height of the fire duct in the fire duct replacement construction drawings, determine the measurement reference point on the building roof. Use a level and a theodolite to mark the installation center line of pipe segment 2 and the fixed position line of support 1. The fixed position line of support 1 should correspond to the position of the hanger rod 12 of support 1 on pipe segment 2. Each hanger rod 12 corresponds to a fixed point.

[0041] S2.2: Marking and calibration: Clearly mark the installation center line of pipe segment 2 and the fixing points of support rod 12 on the building roof with ink lines, and mark the installation elevation line of pipe segment 2 at the same time; at each fixing point of support rod 12, drill expansion bolt installation holes with an impact drill. The diameter of the installation holes is 22mm and the depth is 100mm. After drilling, clean the dust and debris in the holes to ensure that the expansion bolts can be firmly installed later.

[0042] S3: Lifting equipment 3 in place: Refer to Figure 4 and Figure 5 The mobile lifting device 3 is installed below the pipe section 2.

[0043] Reference Figure 4 and Figure 5 The lifting device 3 includes a base 31, a support 32, and a lifting drive 33. The support 32 is mounted on top of the base 31 and is located at one end of the base 31. The support 32 is used to place the pipe segment 2. The lifting drive 33 is located at the bottom of the support 32 and is drivenly connected to the support 32 to drive the support 32 to move vertically. In this embodiment, the lifting drive 33 adopts an electric scissor mechanism; in other embodiments, the lifting drive 33 may also adopt a hydraulic cylinder.

[0044] Reference Figure 4 and Figure 5 The base 31 is equipped with several casters 311 at its bottom, allowing for flexible movement of the base 31 and facilitating quick position adjustment of the lifting equipment 3 during construction. Specifically, the casters 311 are casters 311 with brakes.

[0045] Reference Figure 4 and Figure 5 Two parallel limiting rods 320 are welded to the middle of the support base 32, corresponding to the support beam 11 of the support bracket 1. The two limiting rods 320 have a gap to form a receiving groove for the support beam 11 to be embedded. The limiting rods 320 are made of square tube profile.

[0046] Reference Figure 5 and Figure 6The support base 32 is also equipped with positioning components. Two positioning components are located at opposite ends of the support base 32. Each positioning component includes two positioning rods 321 and two positioning drive members 322. The two positioning rods 321 are respectively supported on opposite sides of the support base 32 and are made of metal square tubing. The two positioning drive members 322 are used to cooperate in driving the two positioning rods 321 to move in opposite directions. Each positioning drive member 322 includes a positioning drive cylinder mounted on the bottom side of the support base 32, with the piston rod of the positioning drive cylinder connected and fixed to the bottom end of the corresponding positioning rod 321.

[0047] Reference Figure 5 and Figure 7 The base 31 is also provided with a limiting travel component 34. The limiting travel component 34 and the support base 32 are located at the two ends of the base 31 respectively. When the pipe segment 2 is placed on the support base 32, the limiting travel component 34 is staggered from the pipe segment 2 located on the support base 32.

[0048] Reference Figure 5 and Figure 7 The limiting travel component 34 includes a limiting bracket 340, a limiting seat 341, and a limiting guide 342.

[0049] Reference Figure 5 and Figure 7 The bottom end of the limiting bracket 340 is welded and fixed to the base 31. The limiting seat 341 is supported on the top end of the limiting bracket 340. An adjusting drive component 3401 is provided on the top of the limiting bracket 340 corresponding to the limiting seat 341. The adjusting drive component 3401 is used to drive the limiting seat 341 to move vertically. The adjusting drive component 3401 includes an adjusting cylinder, and the piston rod of the adjusting cylinder is drivenly connected to the top end of the limiting seat 341. Several guide rods are vertically connected to the bottom end of the limiting seat 341. Linear bearings are installed on the limiting bracket 340 corresponding to the guide rods, and the guide rods pass through the corresponding linear bearings.

[0050] Reference Figure 7 and Figure 8 Two limiting guide portions 342 are provided, and the two limiting guide portions 342 are located at both ends of the limiting seat 341. The limiting guide portion 342 includes a support rod 3421, with both ends of the support rod 3421 extending out from both sides of the limiting seat 341. The two ends of the support rod 3421 are vertically connected to the mounting seats 3423 at both ends of the support rod 3421, and each end of the mounting seats 3423 at both ends of the support rod 3421 is supported on an opposite side by a limiting guide wheel 3424. The guide wheel of the limiting guide wheel 3424 is vertically arranged, and the limiting guide wheel 3424 at both ends of the support rod 3421 forms a snap-fit ​​groove for the pipe section 2 to be inserted.

[0051] Reference Figure 7 and Figure 8A limiting drive component 3425 is provided at the end of the support rod 3421 corresponding to the limiting guide wheel component 3424. The limiting drive components 3425 at both ends of the support rod 3421 are used to cooperate in driving the two limiting guide wheels 3424 to move relative to each other. Specifically, the limiting drive component 3425 includes a limiting cylinder, which is installed on the side of the mounting base 3423 away from the limiting guide wheel component 3424. The piston rod of the limiting cylinder passes through the mounting base 3423 and is connected to the corresponding limiting guide wheel component 3424.

[0052] Reference Figure 7 and Figure 8 A connecting rod 3422, made of metal square tubing, is welded between the support rods 3421 of the two limiting guide parts 342. The connecting rod 3422 connects the support rods 3421 of the two limiting guide parts 342, which helps improve the overall structural strength of the limiting travel assembly and prevents the limiting guide parts 342 from deforming or shifting due to force during the movement of the lifting device 3.

[0053] The specific steps of step S3 are as follows: Release the brakes on the universal wheels 311 of the base 31 of the lifting device 3, and move the lifting device 3 to the installation position below the initial pipe segment 2. During the movement, ensure that the center line of the support seat 32 of the lifting device 3 is aligned with the installation center line of the pipe segment 2.

[0054] S4: Installation of pipe segment 2: Refer to... Figures 4 to 8 The pipe segment 2 is lifted to the corresponding installation position using the lifting device 3, and the support bracket 1 on the pipe segment 2 is fixed to the building roof slab; the specific steps are as follows: S4.1: Move the pipe segment 2 with the support bracket 1 to the support base 32, so that the support beam 11 of the support bracket 1 on the pipe segment 2 is embedded into the receiving groove on the support base 32, and the bottom of the pipe segment 2 abuts against the two limiting rods 320. The receiving groove formed by the two limiting rods 320 is used to lock and limit the support beam 11, and at the same time avoid the situation where the pipe segment 2 is unstable due to the support beam 11 protruding below the pipe segment 2, which helps to improve the placement stability of the pipe segment 2 on the support base 32.

[0055] S4.2: Positioning of pipe segment 2: Two positioning drive components 322 at the positioning assembly of the support base 32 drive two positioning rods 321 to abut against both sides of the pipe segment 2 to clamp and position the pipe segment 2. This effectively restricts the pipe segment 2 from shifting forward and backward or rotating on the support base 32.

[0056] S4.3: The lifting drive 33 drives the support base 32 to move slowly upward, driving the pipe segment 2 to be lifted synchronously. The lifting speed is controlled at 0.1m / s. When the pipe segment 2 is lifted to near the design installation height (about 100mm away from the design height), the lifting speed is slowed down. The operator on the high-altitude work platform observes the installation position of the pipe segment 2, aligns the center line of the pipe segment 2 with the installation center line marked on the building roof, and aligns the top of the support rod 12 with the fixed point marked on the building roof. After calibrating the position, the lifting drive 33 is stopped, and the height of the support base 32 is kept unchanged, so that the pipe segment 2 is temporarily supported by the support base 32.

[0057] S4.4: Drive the expansion bolts at the top of the hanger rod 12 of the support bracket 1 into the mounting holes on the building roof slab. This secures the support bracket 1.

[0058] S5: Lifting equipment 3 shift: Refer to Figures 4 to 8 The moving lifting device 3 is positioned below the installation location of the next pipe segment 2; the specific steps are as follows: S5.1: Loosening of positioning components: After the support and hanger 1 is fixed, the positioning drive 322 is activated, which drives the two positioning rods 321 to move in opposite directions, disengaging from both sides of the pipe section 2 and releasing the clamping and positioning of the pipe section 2.

[0059] S5.2: Support seat 32 reset: Lifting drive component 33 drives support seat 32 to move down and reset.

[0060] S5.3: Move the lifting device 3 along the direction of the fire duct laying until the support base 32 is located below the installation position of the next pipe segment 2.

[0061] In step S5, after the initial pipe segment 2 is installed, the base 31 of the lifting device 3 is moved until the limiting travel component limiting seat 341 is located below the installed initial pipe segment 2 and the limiting seat 341 is opposite to the pipe segment 2. The adjusting drive 3401 of the limiting travel component 34 is activated to drive the limiting seat 341 to rise vertically until the limiting guide wheels 3424 at both ends of the limiting guide part 342 of the limiting seat 341 are opposite to the two sides of the pipe segment 2. The limiting drive 3425 at both ends of the limiting guide part 342 drives the two limiting guide wheels 3424 of the limiting guide part 342 to move relative to each other until the two limiting guide wheels 3424 are tightly abutted against the two sides of the pipe segment 2, forming a locking limit.

[0062] When the lifting equipment 3 is moved to the installation position of the next pipe segment 2, the limiting seat 341 on the lifting equipment 3 moves along the pipe segment 2 through the two limiting guide wheels 3424 of the limiting guide part 342 to guide and limit the lifting equipment 3, ensuring that the lifting equipment 3 always moves along the direction of the fire duct laying, without having to repeatedly adjust the position of the lifting equipment 3, which facilitates the rapid placement of the lifting equipment 3.

[0063] During the movement of the lifting device 3, when the limiting guide wheel 3424 of the limiting guide part 342 at one end of the limiting seat 341 approaches the flange structure of the installed pipe segment 2 or the lifting rod 12 of the support 1, the limiting drive part 3425 of the limiting guide part 342 at that end drives the corresponding limiting guide wheel 3424 away from the pipe segment 2 and disengages from the jamming state to avoid the flange structure or the lifting rod 12 of the support 1; at the same time, the limiting guide wheel 3424 of the limiting guide part 342 at the other end remains in contact with the pipe segment 2, and continues to guide and limit the lifting device 3 to prevent the lifting device 3 from deviating during the movement; after the lifting device 3 moves to avoid the obstacle, the limiting drive part 3425 of the limiting guide part 342 at that end drives the limiting guide wheel 3424 to reset and re-abut against both sides of the pipe segment 2.

[0064] S6: Repeat step S4; S7: Connection and fixing of pipe segment 2: The flange structure of the adjacent pipe segment 2 is connected and fixed by bolts and nuts.

[0065] S8: Repeat steps S5 to S7 until the installation of the remaining pipe segment 2 is completed.

[0066] This application avoids the need for pipe installation and adjustment between the support rods 1 and 12 of the support 1 by pre-installing the support 1 on the pipe segment 2 during construction. This solves the problem of narrow operating space and effectively reduces the difficulty of replacing the entire fire duct, significantly reducing the amount of manual operation and the time spent working at height.

[0067] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A construction method for replacing building fire protection pipes, characterized in that: Includes the following steps: S1: Pipe segment (2) assembly: Several pipe segments are spliced ​​together to form a pipe segment (2), and supports (1) are installed on the pipe segment (2); S2: Measurement and layout: Mark the installation position of the fire duct on the roof of the building according to the design position on the construction drawings; S3: Lifting equipment (3) in place: Move the lifting equipment (3) to below the installation position of the pipe segment (2); S4: Pipe segment (2) installation: The pipe segment (2) is lifted to the corresponding installation position by the lifting equipment (3), and the support (1) on the pipe segment (2) is fixed to the building roof; S5: Lifting equipment (3) relocation: Move the lifting equipment (3) below the installation position of the next pipe segment (2); S6: Repeat step S4; S7: Connection and fixing of pipe segment (2): Connect and fix the flange structure of the pipe segment with the closest end of the adjacent pipe segment (2); S8: Repeat steps S5 to S7 until the installation of the remaining pipe segment (2) is completed.

2. The construction method for replacing building fire protection pipelines according to claim 1, characterized in that: The lifting device (3) includes a base (31), a support seat (32) and a lifting drive (33) are provided above the base (31), the support seat (32) is used for placing the pipe segment (2), and the lifting drive (33) is used to drive the support seat (32) to move vertically. In step S4, when the pipe segment (2) is moved up by the lifting device (3), the pipe segment (2) is placed on the support seat (32); then the support seat (32) is moved up by the lifting drive (33) until the pipe segment (2) is lifted into place.

3. The construction method for replacing building fire protection pipelines according to claim 2, characterized in that: The support frame (1) includes a support beam (11), and the two ends of the support beam (11) are vertically connected to the hangers (12); The top of the support base (32) is provided with two parallel limiting rods (320) corresponding to the support beam (11), and the two limiting rods (320) form a receiving groove for the support beam (11) to be embedded. In step S1, when installing the support (1), the support beam (11) of the support (1) is fixed at the bottom of the middle position of the pipe segment (2); In step S3, when placing the pipe segment (2) to the support seat (32) of the lifting device (3), the support beam (11) of the support bracket (1) of the pipe segment (2) is embedded into the receiving groove formed by the two limiting rods (320), and the bottom of the pipe segment (2) abuts against the two limiting rods (320).

4. The construction method for replacing building fire protection pipelines according to claim 2, characterized in that: The base (31) is equipped with several casters (311) at its bottom.

5. The construction method for replacing building fire protection pipelines according to claim 3, characterized in that: The support base (32) is also provided with a positioning component, which includes two positioning rods (321) and two positioning drive members (322); the two positioning rods (321) are respectively supported on opposite sides of the support base (32), and the two positioning drive members (322) are respectively used to drive the two positioning rods (321) to move in opposite directions; In step S3, after placing the pipe segment (2) onto the support seat (32) of the lifting device (3), the two positioning rods (321) are driven by the two positioning drive members (322) to abut against both sides of the pipe segment (2) to clamp and position the pipe segment (2).

6. The construction method for replacing building fire protection pipelines according to claim 2, characterized in that: The base (31) is also provided with a limit walking component (34) at its tail end. The limiting travel assembly (34) includes a limiting seat (341); both ends of the limiting seat (341) are provided with limiting guide portions (342); the limiting guide portion (342) includes a support rod (3421), both ends of the support rod (3421) extend out from both sides of the limiting seat (341), and both ends of the support rod (3421) are supported with limiting guide wheels (3424); the limiting guide wheels (3424) at both ends of the support rod (3421) form snap-fit ​​grooves for the pipe section (2) to be embedded; The end of the support rod (3421) is provided with a limit drive (3425) corresponding to the limit guide wheel (3424). The limit drive (3425) at both ends of the support rod (3421) is used to cooperate in driving the two limit guide wheels (3424) to move relative to each other. In step S5, when the lifting device (3) is moved from the initial pipe segment (2) to the installation position of the next pipe segment (2), the limiting seat (341) at the tail end of the base (31) of the lifting device (3) is moved to the bottom of the initial pipe segment (2), and the two limiting guide wheels (3424) of the limiting guide part (342) of the limiting seat (341) abut against the two sides of the pipe segment of the initial pipe segment (2); During the movement of the lifting equipment (3), the limiting seat (341) abuts against two limiting guide wheels (3424) on both sides of the pipe section (2) through the limiting guide part (342) and moves along the pipe section (2); During the movement of the lifting device (3), when the two limiting guide wheels (3424) of the limiting guide part (342) at one end of the limiting seat (341) approach the flange structure of the pipe segment (2) or the lifting rod (12) of the support (1), the limiting drive part (3425) of the limiting guide part (342) at that end drives the corresponding limiting guide wheel (3424) away from the pipe segment (2); at the same time, the limiting guide wheel (3424) of the limiting guide part (342) at the other end remains in contact with the pipe segment (2).

7. A construction method for replacing building fire protection pipelines according to claim 6, characterized in that: The limiting walking assembly also includes a limiting bracket (340), which is located at the bottom of the limiting seat (341). The top of the limiting bracket (340) is provided with an adjustment drive (3401) corresponding to the limiting seat (341). The adjustment drive (3401) is used to drive the limiting seat (341) to move vertically.

8. A construction method for replacing building fire protection pipelines according to claim 7, characterized in that: A connecting rod (3422) is provided between the support rods (3421) of the two limiting guide parts (342).

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