A building pipe rust removal device and method

Abstract

The application discloses a building pipeline rust removal device, relates to the field of pipeline rust removal, and comprises a main body, two rust removal components are rotationally connected to the main body, the two rust removal components are rotationally connected to form a rust removal ring for pipeline penetration, and a high-pressure spray head is arranged on the rust removal ring; a climbing assembly for driving the main body to advance on the pipeline is further arranged on the main body; the application further discloses a pipeline rust removal method, which comprises installation, climbing and rust removal; through the arrangement of the main body, the climbing assembly and the rust removal ring, the main body and the rust removal ring can advance along the pipeline and will not slide off; therefore, when the pipeline is rust removed, the rust removal ring can automatically move to a position with rust to complete rust removal, manpower is saved, and the safety of operators is ensured when facing high pipelines.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pipeline renovation, in particular to a building pipeline rust removal device and method. BACKGROUND

[0002] With the increase of service life, the building pipeline usually needs to be renovated, and the pipeline renovation usually includes multiple steps such as rust removal and paint spraying. The common pipeline rust removal device includes a shot blasting machine and the like. However, the rust removal device such as the shot blasting machine needs to be transported and fixed to the rust removal device when rust removal is performed, so the installed pipeline needs to be disassembled, which is undoubtedly not suitable for the renovation of the installed building pipeline.

[0003] The existing pipeline rust removal and renovation is usually performed manually, which is time-consuming and labor-intensive, and is not conducive to the overall renovation progress. In particular, when rust removal is performed on a vertically arranged and high pipeline, safety protection needs to be performed on the operator, otherwise there is a safety risk. SUMMARY

[0004] In order to perform fast rust removal work on the pipeline without disassembling the pipeline to save manpower, the present application provides a pipeline rust removal device and method.

[0005] In a first aspect, the present application provides a pipeline rust removal device, which adopts the following technical solution:

[0006] A building pipeline rust removal device, comprising a main body, two rust removal components are rotatably connected to the main body, the two rust removal components are rotated to be spliced to form a rust removal ring through which the pipeline passes, and a high-pressure spray head is arranged on the rust removal ring; the main body is also provided with a climbing assembly for driving the main body to move forward on the pipeline.

[0007] By adopting the above technical solution, when the pipeline needs to be renovated and rust removed, the main body is attached to the pipeline, the two rust removal components are rotated to be spliced into a rust removal ring, and the rust removal ring surrounds the pipeline. Then, the main body and the rust removal ring are moved on the pipeline by the climbing assembly. When the rust removal ring reaches the position of the pipeline with rust, high-pressure water flow is sprayed from the high-pressure spray head to remove the rust from the pipeline. Without the need for rust removal, personnel do not need to climb when facing vertical and high pipeline rust removal, which reduces the danger of rust removal work.

[0008] Optionally, the climbing assembly comprises two clamping assemblies; the two clamping assemblies are arranged on the main body in a length direction of the pipeline; the clamping assembly comprises a mounting block, a cylinder and two clamping arms, the mounting block is slidably connected to the main body in the length direction of the pipeline; the two clamping arms are rotatably connected to the mounting block, and the two clamping arms are rotated to clamp or release the pipeline; the cylinder is used to drive the mounting block to slide; the main body is also provided with a driving assembly for driving the clamping arms to rotate.

[0009] By adopting the technical scheme, when the normal main body is fixed on the pipeline, the two clamping arms clamp and fix on the pipeline, and the main body is fixed on the clamping arms by the air cylinder; when the main body needs to move along the length direction of the pipeline, one pair of clamping arms is no longer clamped on the pipeline by the driving assembly; then the relaxed clamping arms are moved by the air cylinder, and when reaching a certain position, the clamping arms are clamped on the pipeline again to be fixed on the pipeline by the driving assembly; then, the other pair of clamping arms is changed in position on the pipeline by the driving assembly and the air cylinder; when the two clamping arms are both moved, the relative position relationship between the main body and the clamping arms is changed by the two air cylinders, so that the main body can be moved relative to the pipeline.

[0010] Optionally, the driving assembly comprises a sliding block and a pull rope; the two clamping arms are rotationally connected after being crossed; the clamping arm comprises a clamping portion and a rotating portion, the clamping portion and the rotating portion are fixedly connected, and the rotating portion is rotationally connected to the mounting block at one end close to the clamping portion; the sliding block is fixedly connected to the air cylinder, two bosses are arranged on the sliding block at intervals, and the two bosses are arranged on the two sides of the mounting block along the length direction of the pipeline; one end of the pull rope is fixedly connected to a section of the sliding block away from the air cylinder; and the other end of the pull rope is fixedly connected to one end of the rotating portion away from the clamping portion.

[0011] By adopting the technical scheme, when the clamping arms need to be driven to release the pipeline, the air cylinder drives the sliding block to move upward, in this process, first, the bosses do not abut against the lower end face of the mounting block, at this time, the pull rope is no longer taut, so that the two clamping portions no longer maintain the clamping force on the pipeline, and the friction between the mounting block and the main body can prevent the mounting block from falling under the action of gravity; when the bosses abut against the lower end face of the mounting block, the upward movement of the air cylinder drives the mounting block to move upward; when the mounting block moves to a predetermined position together with the clamping portion, the air cylinder moves downward, in this process, the friction between the mounting block and the main body prevents the mounting block from falling under the action of gravity; then, the sliding block drives the pull rope to gradually move away from the mounting block, at this time, the clamping portion rotates and clamps the pipeline again; when the main body needs to be driven by the air cylinder to slide upward along the vertical direction, the air cylinder continues to move downward, and then the bosses abut against the upper surface of the mounting block, at this time, since the clamping portion clamps and fixes on the pipeline, the downward movement of the air cylinder lifts the main body to complete the movement along the length direction of the pipeline.

[0012] Optionally, the driving assembly further comprises a roller, the roller is rotationally connected to the main body, and the rotation axis of the roller is arranged along the thickness direction of the main body.

[0013] By adopting the technical scheme, the moving path of the pull rope is changed, the clamping arm can receive more accurate force in the direction and rotate more smoothly, and the clamping force of the two clamping parts on the pipeline is ensured.

[0014] Optionally, the two bosses are slidably connected to the sliding block in the length direction of the pipeline, and the sliding block is further provided with a abutting bolt for limiting the sliding of the boss, one end of the abutting bolt is threaded through the boss and abuts against the sliding block.

[0015] By adopting the technical scheme, the boss can be released by rotating the abutting bolt to make it no longer abut against the sliding block, and the boss can freely slide on the sliding block; the boss can be limited in sliding by the friction force when the abutting bolt abuts against the sliding block; the distance between the two bosses can be changed by sliding the boss, so that the range of the cylinder in the extending and retracting state without the mounting block can be changed, and the range of the clamping part in the rotating state can be changed, so that the clamping part can clamp the pipeline with different diameters.

[0016] Optionally, the mounting block is slidably connected with a clamping block in the radial direction of the pipeline, and the main body is provided with a ratchet groove for inserting the clamping block; the mounting block is further provided with a spring for driving the clamping block to insert into the ratchet groove; and the sliding block is further provided with an unlocking member for driving the clamping block to move away from the ratchet groove.

[0017] By adopting the technical scheme, the clamping arm is prevented from falling due to gravity when the clamping arm does not clamp the pipeline, and the limiting is no longer in the form of friction; so that the use process of the device as a whole is more stable, and the friction between the mounting block and the main body is prevented from being reduced due to wear in the later period.

[0018] Optionally, the unlocking member includes an insertion rod, the insertion rod is fixedly connected to the boss close to the cylinder; the clamping block is provided with a groove for inserting the insertion rod, and the insertion rod is provided with a guide surface for abutting against the side wall of the groove to drive the clamping block to move away from the ratchet groove.

[0019] By adopting the technical scheme, when the insertion rod is not inserted into the groove, the clamping block moves away from the ratchet groove under the action of the spring, and at this time the mounting block can only move upward in the vertical direction; when the insertion rod is inserted into the groove, the clamping arm is in the state of clamping the pipeline, and the clamping arm is fixed to the pipeline, and when the cylinder is needed to lift the main body upward, since the insertion rod has been inserted into the groove at this time, the mounting block can move downward relative to the main body, so that the main body can be smoothly lifted.

[0020] In a second aspect, the application also provides a method for rust removal of a building pipeline, which adopts the following technical scheme:

[0021] A method for rust removal of a building pipeline, which includes the following steps:

[0022] Step one: installation; first move the main body to the pipeline position, rotate the rust removal component to splice it to form the rust removal ring; drive the clamping part to rotate by the driving member, so as to clamp the pipeline.

[0023] Step two: climbing; intermittently drive the air cylinder, so that the clamping arm intermittently clamps the pipeline, and the main body together with the rust removal ring is driven by the air cylinder to slide along the length direction of the pipeline to the rust position.

[0024] Step three: rust removal; high-pressure water flushing is performed on the pipeline by the high-pressure nozzle on the rust removal ring to remove rust.

[0025] By the above technical solution, the pipeline rust removal device can automatically remove the rust on the pipeline.

[0026] In summary, the present application has the following beneficial technical effects:

[0027] The present application sets the main body, the climbing assembly and the rust removal ring, so that the main body together with the rust removal ring can advance along the pipeline and will not slide off; thus, when the pipeline is rusted, the rust removal ring can automatically move to the position with rust to complete rust removal, saving manpower, and ensuring the safety of the operator when facing high pipelines. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the overall structure diagram of the building pipeline rust removal device of the present application;

[0029] Figure 2 is to highlight Figure 1 the partial structure diagram of the climbing assembly in the present application;

[0030] Figure 3 is to highlight Figure 1 the partial structure diagram of another state of the climbing assembly in the present application;

[0031] Figure 4 is to highlight Figure 3 the partial structure diagram of the unlocking member in the present application.

[0032] REFERENCE SIGNS:

[0033] 11, pipeline; 12, main body; 13, ratchet groove; 14, supply vehicle; 2, rust removal ring; 21, rust removal component; 22, high-pressure nozzle; 23, splicing bolt; 3, clamping assembly; 31, mounting block; 32, air cylinder; 33, clamping arm; 331, clamping part; 332, rotating part; 333, anti-skid soft pad; 41, sliding block; 411, boss; 412, abutting bolt; 42, pull rope; 43, roller; 51, clamping block; 52, groove; 53, spring; 54, insertion rod; 55, guide surface. DETAILED DESCRIPTION

[0034] The following description will be made in conjunction with the accompanying drawings Figures 1-4 The application is further described in detail.

[0035] The application discloses a pipeline rust removal device. Referring to Figure 1 and Figure 2 , the device comprises a main body 12 and a supply vehicle 14, two rust removal components 21 are rotationally connected to the main body 12, the two rust removal components 21 are rotationally connected and fixed by splice bolts 23 to form a rust removal ring 2, and the rust removal ring 2 is provided with high-pressure nozzles 22 on the side close to the pipeline 11; meanwhile, a climbing assembly for climbing on the pipeline 11 is arranged on the main body 12; the supply vehicle 14 is responsible for providing water source to the high-pressure nozzles 22 and also responsible for providing energy to the climbing assembly.

[0036] In the embodiment, the climbing assembly comprises two clamping assemblies 3, which are arranged on the main body 12 at intervals along the length direction of the pipeline 11; the clamping assembly 3 comprises a mounting block 31, a cylinder 32 and two clamping arms 33; the mounting block 31 is slidingly connected to the main body 12 along the length direction of the pipeline 11, and the cylinder 32 is used to drive the mounting block 31 to slide; the two clamping arms 33 are rotationally connected to the mounting block 31, the two clamping arms 33 are oppositely arranged, and the two clamping arms 33 can clamp or release the pipeline 11 after rotation, and the side of the clamping arm 33 close to the pipeline 11 is provided with an antiskid soft pad 333; meanwhile, a driving assembly for driving the clamping arm 33 to rotate is arranged on the main body 12.

[0037] When rust removal is needed on the pipeline 11, the main body 12 together with the rust removal ring 2 is fixed on the pipeline 11 by the clamping arms 33; then the driving assembly makes one pair of clamping arms 33 no longer clamp the pipeline 11; then the cylinder 32 drives the relaxed clamping arms 33 to move, and when reaching a certain position, the driving assembly is used to make the clamping arms 33 clamp the pipeline 11 again to be fixed on the pipeline 11; then, the driving assembly and the cylinder 32 are used to change the position of the other pair of clamping arms 33 on the pipeline 11; when the two clamping arms 33 complete the movement and clamp the pipeline 11, the cylinder 32 is used to change the relative position relationship between the main body 12 and the clamping arms 33, so that the main body 12 can complete the movement relative to the pipeline 11; when the main body 12 with the rust removal ring 2 moves to a position with rust, high-pressure water flow is sprayed by the high-pressure nozzles to clean the rust.

[0038] Referring to Figure 2 and Figure 3 , in the embodiment, the driving assembly comprises a sliding block 41, a roller 43 and two pull ropes 42, the sliding block 41 is fixed on the cylinder 32, as Figure 2As described above, the fixed end of the cylinder 32 is fixedly connected to the main body 12, and the telescopic end of the cylinder 32 is fixedly connected to the sliding block 41. The sliding block 41 is vertically mounted on the mounting block 31. Two protrusions 411 are spaced apart on the sliding block 41, and the two protrusions 411 are respectively located on both sides of the mounting block 31 in the vertical direction. Meanwhile, the clamping arm 33 includes a clamping part 331 and a rotating part 332. The clamping part 331 and the rotating part 332 are fixedly connected, and one end of the rotating part 332 near the clamping part 331 is rotatably connected to the mounting block 31. The two clamping arms 33 are arranged crosswise. The roller 43 is rotatably connected to the mounting block 31, and the rotation axis of the roller 43 is horizontally positioned. One end of each of the two pull ropes 42 is fixedly connected to the two rotating parts 332, and the other end of each pull rope 42 is fixedly connected to the end of the sliding block 41 away from the cylinder 32 (i.e.,...). Figure 2 The lower end of the pull rope 42 is mounted on the roller 43. The pull rope 42 has a certain elasticity. When the pull rope 42 is taut, it can continuously apply a force to the rotating part 332, thereby maintaining the friction between the rotating part 332 and the pipe 11.

[0039] When the clamping arm 33 needs to rotate to no longer clamp the pipe 11, the cylinder 32 slides upward in the vertical direction (i.e., Figure 2 (Above the middle), at this time, the sliding block 41 moves upward, and the pull rope 42 gradually loosens, and the clamping part 331 no longer tightens the pipe 11 (a spring can be added here to allow the clamping arm to release the pipe more quickly). At this time, due to the friction from the main body 12, the mounting block 31 will not fall under the action of gravity; the cylinder 32 continues to retract, and the sliding block 41 continues to move upward until the lower boss 411 abuts against the lower end face of the mounting block 31. The retraction of the cylinder 32 can drive the mounting block 31 and the clamping arm 33 to move upward; when the clamping arm 33 moves to the predetermined position After that, the cylinder 32 begins to extend and the sliding block 41 begins to move downward. During this process, the mounting block 31 will not fall due to gravity because of the friction between it and the main body 12. As the sliding block 41 moves downward, the lower end of the sliding block 41 gradually moves away from the rotating part 332, thereby causing the pull rope 42 to tighten. The tightening of the pull rope 42 can drive the rotating part 332 to rotate and drive the clamping part 331 to clamp the pipe 11. When the boss 411 on the top of the mounting block 31 abuts against the upper surface of the mounting block 31, the clamping part 331 should have completely clamped the pipe 11.

[0040] The process of releasing the pipe 11 by the two clamping components 3 should be carried out separately. After both clamping components 3 have completed the upward movement of the clamping arm 33, the cylinder 32 extends. Since the clamping arm 33 and the mounting block 31 are fixed on the pipe 11 at this time, the extension of the two cylinders 32 can support the main body 12 through the boss 411, so that the main body 12 and the rust removal ring 2 can move on the pipe 11.

[0041] In order to enable the clamping part 331 to clamp pipes 11 of different sizes, the boss 411 is slidingly connected to the sliding block 41 in the extension and retraction direction of the air cylinder 32, and the boss 411 is further provided with a abutting bolt 412 for limiting the sliding of the boss 411, one end of the abutting bolt 412 is threaded through the boss 411 in the horizontal direction and abuts on the sliding block 41 to limit the sliding of the boss 411; here, considering that the range in which the clamping arm 33 can finally retract is controlled by the distance between the lower end of the sliding block 41 and the mounting block 31, if the distance between the lower end of the sliding block 41 is farther, the pulling rope 42 will bring the clamping part 331 to rotate more, and then a smaller size pipe 11 can be clamped; and when adjusting the position of the boss 411, it is necessary to ensure that the boss 411 above the mounting block 31 abuts on the mounting block 31, and the pulling rope 42 is in a straight state.

[0042] Referring to Figure 3 and Figure 4 In the above action process, an indispensable condition is that when the boss 411 below the mounting block 31 does not abut on the mounting block 31, the mounting block 31 cannot descend due to the influence of gravity; in the above description, this condition is provided by the friction between the main body 12 and the mounting block 31, but after the device is operated for a long time, the wear between the main body 12 and the mounting block 31 may cause the friction to fail; therefore, in order to enable the device to operate stably for a long time, the clamping block 51 is slidingly connected to the mounting block 31 in the radial direction of the pipe 11, the main body 12 is provided with the ratchet groove 13 for inserting the clamping block 51, and the spring 53 for driving the clamping block 51 to insert into the ratchet groove 13 is arranged on the mounting block 31; when the spring 53 is in a natural state, the clamping block 51 is inserted into the ratchet groove 13, thereby limiting the downward sliding (i.e. the direction of gravity) of the mounting block 31 relative to the main body 12; when the air cylinder 32 drives the mounting block 31 to slide upward, the ratchet groove 13 cannot limit the sliding of the mounting block 31; however, after the clamping arm 33 completes the movement relative to the pipe 11, the main body 12 needs to move upward at this time, in this process, the main body 12 moves upward, i.e. the mounting block 31 moves downward relative to the main body 12, at this time, the ratchet groove 13 and the clamping block 51 undoubtedly hinder the movement of the main body 12; therefore, the unlocking piece is arranged on the sliding block 41, when the main body 12 needs to move upward, the unlocking piece drives the clamping block 51 to disengage from the ratchet groove 13, so that the main body 12 can move smoothly.

[0043] In order to further automate, a scanner that can scan the location of rust can also be installed on the main body 12, so that the main body 12 can automatically move to the location with rust.

[0044] In the embodiment, the unlocking member includes a plug rod 54 fixedly connected to the boss 411 above the mounting block 31, and the clamping block 51 is provided with a groove 52 for the plug rod 54 to be inserted into, and the plug rod 54 is provided with a guide surface 55 for the sidewall of the groove 52 to abut against to drive the clamping block 51 away from the ratchet groove 13; when the main body 12 needs to be upwardly slid, the boss 411 above the mounting block 31 should abut against the mounting block 31 at this time, and the plug rod 54 has been inserted into the groove 52, and the clamping block 51 has been gradually driven away from the ratchet groove 13 in the process of the plug rod 54 being inserted into the groove 52, so that the main body 12 can be upwardly moved relative to the mounting block 31.

[0045] The principle of the embodiment of the pipeline 11 rust removal device and method is that when the clamping arms 33 are clamped on the pipeline 11, the air cylinders 32 are in the elongated state, at this time, the pull ropes 42 provide a pulling force for the rotating part 332, so that the pipeline 11 can be clamped tightly; when the main body 12 needs to be moved, the moving process is divided into two steps, the first step is to adjust the positions of the clamping assemblies 3 one by one; the air cylinders 32 are driven to be contracted, so that the clamping arms 33 are no longer clamped on the pipeline 11 and drive the clamping arms 33 to move along the pipeline 11, so that the clamping arms 33 are moved to the predetermined positions; the air cylinders 32 are elongated, so that the pull ropes 42 are straightened again to clamp the pipeline 11 by the clamping arms 33 again; the second step is that when the positions of the two clamping assemblies 3 are adjusted, the air cylinders 32 are elongated again, the bosses 411 abut against the mounting blocks 31, so that the main body 12 is lifted up; after the main body 12 and the rust removal ring 2 are moved along the pipeline 11 to the position with rust, the high-pressure spray head 22 sprays the high-pressure water flow to remove the rust of the pipeline 11; at the same time, if it is needed to synchronously perform the paint spraying maintenance and the like after the rust removal, the paint spraying components can also be installed on the main body 12, and even the grinding disc can also be clamped on the main body 12, after the high-pressure water gun is washed, the pipeline 11 is ground and brushed, and then the pipeline 11 is painted; the power source can also be provided by the supply vehicle 14.

[0046] The embodiment of the application further discloses a pipeline 11 rust removal method, which includes the following steps.

[0047] Step one: installation, the main body 12 is moved to the position of the pipeline 11, the two rust removal components 21 are rotated and connected by the splicing bolts 23 to form the rust removal ring 2, and then the clamping arms 33 are driven by the driving member to clamp the pipeline 11.

[0048] Step two: climbing, the air cylinders 32 are intermittently driven to be contracted and elongated, so that the clamping arms 33 do not clamp the pipeline 11 when the clamping arms 33 are moved, and the clamping arms 33 can clamp the pipeline 11 when the clamping arms 33 do not need to be moved; then the main body 12 is lifted by the air cylinders 32, so that the main body 12 moves along the length direction of the pipeline 11 to the rusted position.

[0049] Step three: rust removal, the high-pressure water gun on the rust removal ring 2 is used to wash the pipeline 11 by the high-pressure water flow, so that the rust removal is completed.

[0050] The rust removal of the whole pipeline 11 can be completed by repeating steps two and three.

[0051] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A rust removal device for building pipes, characterized in that: The device includes a main body (12), on which two rust-removing components (21) are rotatably connected. The two rust-removing components (21) rotate to splice together to form a rust-removing ring (2) through which the pipe (11) passes. The rust-removing ring (2) is provided with a high-pressure nozzle (22). The main body (12) is also provided with a climbing component for propelling itself forward on the pipe (11). The climbing assembly includes two clamping assemblies (3); the two clamping assemblies (3) are spaced apart on the main body (12) along the length of the pipe (11); each clamping assembly (3) includes a mounting block (31), a cylinder (32) and two clamping arms (33); the mounting block (31) is slidably connected to the main body (12) along the length of the pipe (11); the two clamping arms (33) are rotatably connected to the mounting block (31), and the two clamping arms (33) rotate to clamp or release the pipe (11); the cylinder (32) is used to drive the mounting block (31) to slide; the main body (12) is also provided with a drive assembly for driving the clamping arms (33) to rotate; The drive assembly includes a sliding block (41) and a pull rope (42); the two clamping arms (33) are rotatably connected after crossing; the clamping arm (33) includes a clamping part (331) and a rotating part (332), the clamping part (331) and the rotating part (332) are fixedly connected, and the end of the rotating part (332) near the clamping part (331) is rotatably connected to the mounting block (31); the sliding block (41) is fixedly connected to the cylinder (32), and two bosses (411) are spaced apart on the sliding block (41), the two bosses (411) are located on both sides of the mounting block (31) along the length of the pipe (11); one end of the pull rope (42) is fixedly connected to a section of the sliding block (41) away from the cylinder (32); the other end of the pull rope (42) is fixedly connected to the end of the rotating part (332) away from the clamping part (331); A locking block (51) is slidably connected to the mounting block (31) along the radial direction of the pipe (11). A ratchet groove (13) is provided on the main body (12) for the locking block (51) to be inserted. A spring (53) is also provided on the mounting block (31) to drive the locking block (51) into the ratchet groove (13). An unlocking component is also provided on the sliding block (41) to drive the locking block (51) away from the ratchet groove (13).

2. The rust removal device for building pipes according to claim 1, characterized in that: The drive assembly also includes a roller (43), which is rotatably connected to the mounting block (31). The axis of rotation of the roller (43) is set in the horizontal direction, and the pull rope (42) is mounted on the roller (43).

3. The rust removal device for building pipes according to claim 1, characterized in that: The two bosses (411) are slidably connected to the sliding block (41) along the length of the pipe (11). The sliding block (41) is also provided with a clamping bolt (412) for limiting the sliding of the bosses (411). One end of the clamping bolt (412) is threaded through the bosses (411) and abuts against the sliding block (41).

4. The rust removal device for building pipes according to claim 1, characterized in that: The unlocking component includes a rod (54) which is fixedly connected to a boss (411) near the cylinder (32); the locking block (51) is provided with a groove (52) for inserting the rod (54), and the rod (54) is provided with a guide surface (55) for the side wall of the groove (52) to abut against, thereby driving the locking block (51) away from the ratchet (13).

5. A method for removing rust from building pipes, using a rust removal device for building pipes (11) as described in any one of claims 1 to 4, characterized in that: Includes the following steps: Step 1: Installation; First, move the main body (12) to the position of the pipe (11), rotate the rust removal component (21) to splice it to form the rust removal ring (2); drive the clamping part (331) to rotate through the driving component to clamp the pipe (11); Step 2: Climbing, intermittently driving the cylinder (32) to intermittently clamp the pipe (11) with the clamping arm (33), and through the cylinder (32) driving the main body (12) together with the rust removal ring (2) to slide along the length of the pipe (11) to the rust position; Step 3: Rust removal: The pipe (11) is flushed with high-pressure water through the high-pressure nozzle (22) on the rust removal ring (2) to remove rust.

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