CN116787338A

CN116787338A - Building pipeline rust removing device and method

Info

Publication number: CN116787338A
Application number: CN202310685011.7A
Authority: CN
Inventors: 徐磊; 王少纯; 陈彦孜; 李子乔; 余光远
Original assignee: Shanghai Construction No 1 Group Co Ltd
Current assignee: Shanghai Construction No 1 Group Co Ltd
Priority date: 2023-06-09
Filing date: 2023-06-09
Publication date: 2023-09-22

Abstract

The application discloses a building pipeline rust removing device, which relates to the field of pipeline rust removing, and comprises a main body, wherein two rust removing parts are rotatably connected to the main body, the two rust removing parts rotate to splice and form a rust removing ring for a pipeline to pass through, and a high-pressure spray head is arranged on the rust removing ring; the main body is also provided with a climbing assembly for driving the main body to advance on the pipeline; the application also discloses a pipeline rust removing method, which comprises the steps of mounting, climbing and rust removing; according to the application, through the arrangement of the main body, the climbing assembly and the rust removing ring, the main body and the rust removing ring can advance along the pipeline without sliding off; therefore, when the pipeline is used for removing rust, the rust removing ring can automatically move to the position with rust to remove the rust, labor is saved, and meanwhile, the safety of operators is guaranteed for the pipeline with higher height.

Description

Building pipeline rust removing device and method

Technical Field

The application relates to the field of pipeline renovation, in particular to a rust removing device and method for a building pipeline.

Background

Building pipelines generally need to be renovated with the increase of service life, and pipeline renovation generally comprises a plurality of steps such as rust removal, paint spraying and the like; common pipeline rust removing devices include shot blasting machines and the like, but when the rust removing devices such as the shot blasting machines remove rust, the pipeline is required to be transported and fixed to the rust removing devices, and therefore the installed pipeline is required to be detached, and the mode is definitely not suitable for renewing the installed building pipeline.

The existing pipeline rust removal and renovation is usually carried out by adopting manual operation, which is time-consuming and labor-consuming, is unfavorable for the overall renovation progress, and especially when the pipeline which is vertically arranged and has higher height is subjected to rust removal, the pipeline also needs to be subjected to safety protection for operators, otherwise, the safety risk exists.

Disclosure of Invention

In order to save labor by performing quick rust removal on the pipeline without disassembling the pipeline, the application provides a pipeline rust removal device and a pipeline rust removal method.

In a first aspect, the present application provides a pipeline rust removing device, which adopts the following technical scheme:

the rust removing device for the building pipeline comprises a main body, wherein two rust removing parts are rotatably connected to the main body, the two rust removing parts rotate to be spliced to form a rust removing ring for the pipeline to pass through, and a high-pressure spray head is arranged on the rust removing ring; the main body is also provided with a climbing assembly for driving the main body to advance on the pipeline.

By adopting the technical scheme, when the pipeline is required to be retreaded and derusted, the main body is attached to the pipeline, so that the two derusting parts rotate to be spliced into the derusting ring, and the derusting ring surrounds the pipeline; then the main body and the rust removing ring are driven to move on the pipeline through the climbing assembly; when the rust removing ring reaches the position of the pipeline with rust, high-pressure water flow is sprayed out of the high-pressure spray head to remove rust from the pipeline; need not to be fixed in the sun for rust removal, and when just facing vertical setting and higher pipeline rust removal, personnel need not ascend a height, have reduced rust removal work's danger.

Optionally, the climbing assembly comprises two clamping assemblies; the two clamping assemblies are arranged on the main body at intervals along the length direction of the pipeline; the clamping assembly comprises a mounting block, an air cylinder and two clamping arms, and the mounting block is connected to the main body in a sliding manner along the length direction of the pipeline; the two clamping arms are rotatably connected to the mounting block and rotate to clamp or loosen the pipeline; the air cylinder is used for driving the mounting block to slide; the main body is also provided with a driving component for driving the clamping arm to rotate.

By adopting the technical scheme, when the normal main body is fixed on the pipeline, the two clamping arms clamp the pipeline and are fixed on the pipeline, and the main body is fixed on the clamping arms through the air cylinder; when the main body needs to move along the length direction of the pipeline, the driving assembly enables one pair of clamping arms not to clamp the pipeline any more; then the loose clamping arm is driven to move through the air cylinder, and after a certain position is reached, the loose clamping arm clamps the pipeline through the driving assembly again so as to be fixed on the pipeline; subsequently, the position of the other pair of clamping arms on the pipeline is similarly changed by the driving assembly and the air cylinder; after the two clamping arms are moved, the relative position relation between the main body and the clamping arms is changed through the two air cylinders, so that the main body can move relative to the pipeline.

Optionally, the driving assembly comprises a sliding block and a pull rope; the two clamping arms are rotatably connected after crossing; the clamping arm comprises a clamping part and a rotating part, the clamping part is fixedly connected with the rotating part, and one end of the rotating part, which is close to the clamping part, is rotationally connected with the mounting block; the sliding block is fixedly connected with the air cylinder, two bosses are arranged on the sliding block at intervals, and the two bosses are arranged on two sides of the mounting block along the length direction of the pipeline; one end of the pull rope is fixedly connected with a section of the sliding block, which is far away from the air cylinder; the other end of the pull rope is fixedly connected with one end of the rotating part, which is far away from the clamping part.

By adopting the technical scheme, when the clamping arm is required to be driven to loosen the pipeline, the air cylinder drives the sliding block to move upwards, in the process, the boss is not abutted against the lower end surface of the mounting block, and the pull rope is not tightened any more, so that the clamping force on the pipeline is not maintained by the two clamping parts, and meanwhile, the falling of the mounting block under the action of gravity can be prevented by the friction force between the mounting block and the main body; when the boss is abutted against the lower end face of the mounting block, the upward movement of the air cylinder can drive the mounting block to move upwards; when the mounting block and the clamping part move to a preset position, the air cylinder moves downwards, and in the process, the friction force between the mounting block and the main body prevents the mounting block from falling down under the action of gravity; then, the sliding block drives the pull rope to gradually get away from the installation block, and the clamping part rotates and clamps the pipeline again; when the main body is required to be driven to slide upwards in the vertical direction through the air cylinder, the air cylinder continuously moves downwards, then the boss is abutted to the upper surface of the mounting block, at the moment, the clamping part clamps and is fixed on the pipeline, and at the moment, the main body can be supported by the downward movement of the air cylinder, so that the movement along the length direction of the pipeline is completed.

Optionally, the driving assembly further comprises a roller, the roller is rotationally connected to the main body, the rotation axis of the roller is arranged along the thickness direction of the main body, and the pull rope is erected on the roller.

Through adopting above-mentioned technical scheme, change the stay cord and at the motion path of removal, thereby make the centre gripping arm can receive the more accurate power of direction pivoted more smooth and easy, also guaranteed simultaneously that two clamping parts are to the clamp force of pipeline.

Optionally, the two bosses are slidably connected to the sliding block along the length direction of the pipeline, a tightening bolt for limiting the sliding of the bosses is further arranged on the sliding block, and one end of the tightening bolt is threaded through the boss and abuts against the sliding block.

By adopting the technical scheme, the boss can be released by rotating the abutting bolt so that the abutting bolt does not abut against the sliding block any more, and the boss can slide on the sliding block freely; the abutting bolt abuts against the sliding block, so that the sliding of the boss can be limited by friction force; the sliding boss can change the distance between the two bosses, so that the telescopic range of the air cylinder under the condition that the installation block is not driven is changed, the rotatable range of the clamping part is changed, and the clamping part can be clamped on pipelines with different diameters.

Optionally, the mounting block is slidably connected with a clamping block along 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 also provided with a spring for driving the clamping block to be inserted into the ratchet groove; the sliding block is also provided with an unlocking piece for driving the clamping block to be far away from the ratchet groove.

By adopting the technical scheme, the falling caused by gravity when the clamping arms do not clamp the pipeline is further prevented, and the limiting is not performed in a friction mode; thereby make the holistic use of device more stable, avoid later stage because of wearing and tearing to lead to the frictional force between installation piece and the main part to reduce.

Optionally, the unlocking piece comprises a plug rod, and the plug rod is fixedly connected to a boss close to the air cylinder; the clamping block is provided with a groove for the insertion rod to insert, and the insertion rod is provided with a guide surface for the side wall of the groove to abut against so as to drive the clamping block to be far away from the ratchet groove.

By adopting the technical scheme, when the inserted link is not inserted into the groove, the clamping block is far away from the ratchet groove under the action of the spring, and the mounting block can only move upwards along the vertical direction; when the inserted bar is inserted into the groove, the clamping arm is in a state of clamping the pipeline, the clamping arm is fixed on the pipeline, and when the main body is required to be upwards supported through the air cylinder, the installation block can move downwards relative to the main body due to the fact that the inserted bar is inserted into the groove.

In a second aspect, the application also provides a rust removing method for building pipelines, which adopts the following technical scheme:

a method for rust removal of building pipes, comprising the steps of:

step one: installing; firstly, moving the main body to the pipeline position, and rotating the rust removing component to splice the rust removing component to form the rust removing ring; the clamping part is driven to rotate through the driving piece, so that the clamping part clamps the pipeline.

Step two: climbing, intermittently driving the air cylinder to enable the clamping arm to intermittently clamp the pipeline, and driving the main body and the rust removing ring to slide to a rust position along the length direction of the pipeline through the air cylinder.

Step three: and (3) rust removal: and high-pressure water flushing is carried out on the pipeline through a high-pressure spray nozzle on the rust removing ring so as to remove rust.

Through the technical scheme, the rust removing device for the pipeline can automatically remove rust on the pipeline.

In summary, the application has the following beneficial technical effects:

according to the application, through the arrangement of the main body, the climbing assembly and the rust removing ring, the main body and the rust removing ring can advance along the pipeline without sliding off; therefore, when the pipeline is used for removing rust, the rust removing ring can automatically move to the position with rust to remove the rust, labor is saved, and meanwhile, the safety of operators is guaranteed for the pipeline with higher height.

Drawings

FIG. 1 is an overall construction diagram of a building pipe rust removal device of the present application;

FIG. 2 is a partial block diagram highlighting the climbing assembly of FIG. 1;

FIG. 3 is a partial block diagram highlighting another state of the climbing assembly of FIG. 1;

fig. 4 is a sectional view showing a part of the structure of the unlocking member in fig. 3.

Reference numerals illustrate:

11. a pipe; 12. a main body; 13. a ratchet groove; 14. a supply vehicle; 2. a rust removing ring; 21. a rust removing part; 22. a high pressure nozzle; 23. splicing bolts; 3. a clamping assembly; 31. a mounting block; 32. a cylinder; 33. a clamping arm; 331. a clamping part; 332. a rotating part; 333. an anti-slip soft pad; 41. a sliding block; 411. a boss; 412. abutting the bolt; 42. a pull rope; 43. a roller; 51. a clamping block; 52. a groove; 53. a spring; 54. a rod; 55. a guide surface.

Detailed Description

The application is described in further detail below with reference to fig. 1-4.

The embodiment of the application discloses a pipeline 11 rust removing device. Referring to fig. 1 and 2, the device comprises a main body 12 and a supply vehicle 14, wherein two rust removing parts 21 are rotatably connected to the main body 12, the two rust removing parts 21 rotate and can be spliced to form a rust removing ring 2 after being fixed by splicing bolts 23, and a high-pressure spray head 22 is arranged on one side of the rust removing ring 2, which is close to a pipeline 11; meanwhile, a climbing component for climbing on the pipeline 11 is arranged on the main body 12; supply cart 14 is responsible for providing a source of water to high pressure spray head 22 and also for providing energy to the climbing assembly.

In this embodiment, the climbing assembly comprises two clamping assemblies 3, and the two clamping assemblies 3 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, an air cylinder 32 and two clamping arms 33; the mounting block 31 is connected to the main body 12 in a sliding manner along the length direction of the pipeline 11, and the air cylinder 32 is used for driving the mounting block 31 to slide; the two clamping arms 33 are rotatably connected to the mounting block 31, the two clamping arms 33 are oppositely arranged, the two clamping arms 33 can clamp the pipeline 11 or loosen the pipeline 11 after rotating, and the side surface, close to the pipeline 11, of the clamping arms 33 is provided with an anti-slip soft cushion 333; and a driving assembly for driving the clamping arm 33 to rotate is also provided on the main body 12.

When the pipeline 11 needs to be derusted, the main body 12 and the derusting ring 2 are fixed on the pipeline 11 through the clamping arms 33; the drive assembly then causes one of the pairs of gripping arms 33 to no longer grip the pipe 11; the loose clamping arm 33 is then moved by the air cylinder 32, and when a certain position is reached, the pipe 11 is clamped again by the driving assembly to be fixed on the pipe 11; subsequently, the position of the other pair of gripping arms 33 on the pipe 11 is changed similarly by the driving assembly and the air cylinder 32; when the two clamping arms 33 are moved and clamped on the pipeline 11, the relative position relationship between the main body 12 and the clamping arms 33 is changed through the two air cylinders 32, so that the main body 12 can move relative to the pipeline 11; when the main body 12 moves to the position with rust removing ring 2, the rust is treated cleanly by spraying high pressure water flow through the high pressure nozzle.

Referring to fig. 2 and 3, in the present embodiment, the driving assembly includes a sliding block 41, a roller 43 and two pull ropes 42, the sliding block 41 is fixed on the air cylinder 32, as shown in fig. 2, the fixed end of the air cylinder 32 is fixedly connected to the main body 12, the telescopic end of the air cylinder 32 is fixedly connected to the sliding block 41, and the sliding block 41 is vertically penetrated on the mounting block 31; meanwhile, two bosses 411 are arranged on the sliding block 41 at intervals, and the two bosses 411 are respectively arranged on two sides of the mounting block 31 along the vertical direction; meanwhile, the clamping arms 33 comprise a clamping part 331 and a rotating part 332, the clamping part 331 is fixedly connected with the rotating part 332, one end of the rotating part 332, which is close to the clamping part 331, is rotationally connected with the mounting block 31, and the two clamping arms 33 are arranged in a crossing manner; the roller 43 is rotatably connected to the mounting block 31, the rotation axis of the roller 43 is arranged along the horizontal direction, one ends of the two pull ropes 42 are fixedly connected with the two rotating parts 332 respectively, and the other ends of the two pull ropes 42 are fixedly connected with one end of the sliding block 41 away from the air cylinder 32 (i.e. the lower end in fig. 2); the middle section of the pull rope 42 is arranged on the roller 43; at the same time, the pull rope 42 has a certain elasticity, when the pull rope 42 is tightened, the pull rope 42 can continuously apply a force to the rotating part 332, so that the rotating part 332 maintains a friction force with the pipeline 11.

When the clamping arm 33 needs to rotate to not clamp the pipeline 11 any more, the air cylinder 32 slides upwards in the vertical direction (i.e. upwards in fig. 2), the sliding block 41 moves upwards, the pull rope 42 is gradually loosened, the clamping part 331 is not clamping the pipeline 11 (a spring can be additionally arranged to enable the clamping arm to release the pipeline more quickly) and the mounting block 31 cannot fall down under the action of gravity due to friction from the main body 12; the air cylinder 32 continues to shrink, the sliding block 41 continues to move upwards until the lower boss 411 abuts against the lower end face of the mounting block 31, and the shrinkage of the air cylinder 32 can drive the mounting block 31 and the clamping arm 33 to move upwards; after the clamp arm 33 is moved to the predetermined position, the cylinder 32 starts to extend the slider 41 to start moving downward, and during this process, the mounting block 31 is not dropped by gravity due to friction with the main body 12; in the process of downward movement of the sliding block 41, the lower end of the sliding block 41 is gradually far away from the rotating part 332, so that the pull rope 42 is driven to tighten, and the pull rope 42 tightens to drive the rotating part 332 to rotate and drive the clamping part 331 to clamp the pipeline 11; when the boss 411 above the mounting block 31 abuts against the upper end surface of the mounting block 31, the clamping portion 331 should have completely clamped the pipe 11.

The process of loosening the pipeline 11 of the two clamping assemblies 3 should be separately performed, when the two clamping assemblies 3 complete the upward movement of the clamping arms 33, the air cylinders 32 are extended, and the two air cylinders 32 are extended to prop up the main body 12 through the boss 411, so that the main body 12 and the rust removing ring 2 move on the pipeline 11 because the clamping arms 33 are communicated with the mounting blocks 31 and are fixed on the pipeline 11.

In order to enable the clamping part 331 to clamp pipes 11 with different sizes, the boss 411 is slidably connected to the sliding block 41 along the expansion and contraction direction of the air cylinder 32, meanwhile, the boss 411 is further provided with a abutting bolt 412 for limiting the sliding of the boss 411, and one end of the abutting bolt 412 is threaded on the boss 411 along the horizontal direction and abuts against the sliding block 41 so as to limit the sliding of the boss 411; here, considering that the final contractible range of the clamping arm 33 is controlled by the distance between the lower end of the sliding block 41 and the mounting block 31, if the lower end of the sliding block 41 is further away, the pulling rope 42 will drive the clamping portion 331 to rotate more, so that the smaller-sized pipe 11 can be clamped; when the position of the boss 411 is adjusted, it is necessary to ensure that the pull rope 42 is in a straightened state after the boss 411 above the mounting block 31 abuts against the mounting block 31.

Referring to fig. 3 and 4, in the above-described operation, the indelible condition is that the mounting block 31 cannot fall down due to the influence of gravity when the boss 411 below the mounting block 31 is not abutted on the mounting block 31; in the above description, this condition is provided by the frictional force between the main body 12 and the mounting block 31, but after a long period of operation of the device, wear between the main body 12 and the mounting block 31 may cause the frictional force to fail; therefore, in order to enable the device to stably run for a long time, the mounting block 31 is slidably connected with the clamping block 51 along the radial direction of the pipeline 11, the main body 12 is provided with the ratchet groove 13 for the clamping block 51 to be inserted, meanwhile, the mounting block 31 is provided with the spring 53 for driving the clamping block 51 to be inserted into the ratchet groove 13, when the spring 53 is in a natural state, the clamping block 51 is inserted into the ratchet groove 13, so that the mounting block 31 is limited to slide downwards (namely, in the gravity direction) relative to the main body 12, and when the air cylinder 32 drives the mounting block 31 to slide upwards, the ratchet groove 13 cannot limit the sliding of the mounting block 31; however, when the clamping arms 33 are moved relative to the pipe 11, the main body 12 is required to move upward, and in the process, the main body 12 moves upward, that is, the mounting block 31 moves downward relative to the main body 12, the ratchet grooves 13 and the clamping blocks 51 certainly block the movement of the main body 12; therefore, the sliding block 41 is provided with an unlocking member, and when the main body 12 needs to move upwards, the unlocking member drives the clamping block 51 to be separated from the ratchet groove 13, so that the main body 12 can move smoothly.

For further automation, a scanner that can scan the rust position may also be mounted on the body 12 so that the body 12 can be automatically moved to a position with rust.

In this embodiment, the unlocking member includes a plunger 54, the plunger 54 is fixedly connected to a boss 411 above the mounting block 31, a groove 52 for inserting the plunger 54 is provided on the clamping block 51, and a guiding surface 55 for abutting against a side wall of the groove 52 to drive the clamping block 51 away from the ratchet slot 13 is provided on the plunger 54; when the main body 12 needs to slide upwards, the boss 411 above the mounting block 31 should abut against the mounting block 31, and the insert rod 54 is inserted into the groove 52, and the clamp block 51 is gradually far away from the ratchet groove 13 during the process of inserting the insert rod 54 into the groove 52, so that the main body 12 can move upwards relative to the mounting block 31.

The embodiment of the application relates to a pipeline 11 rust removing device and a method, and the implementation principle is as follows: when the clamping arm 33 is clamped on the pipeline 11, the air cylinder 32 is in an extension state, and the pulling rope 42 provides a pulling force for the rotating part 332 so that the rotating part can clamp the pipeline 11; when the main body 12 needs to be moved, the moving process is divided into two steps, wherein the first step is to adjust the positions of the clamping assemblies 3 one by one; the driving cylinder 32 is contracted, so that the clamping arm 33 does not clamp the pipeline 11 any more and drives the clamping arm 33 to move along the direction of the pipeline 11, and the clamping arm 33 is moved to a preset position; the cylinder 32 is extended, so that the stay rope 42 is straightened again, and the clamping arm 33 clamps the pipeline 11 again; second, when the position adjustment of the two clamping assemblies 3 is completed, the rear cylinder 32 is extended again, and the boss 411 abuts against the mounting block 31 so as to prop up the main body 12; after the main body 12 and the rust removing ring 2 move to a position with rust along the pipeline 11, the high-pressure spray head 22 sprays high-pressure water flow to remove rust on the pipeline 11; meanwhile, if the actions such as paint spraying maintenance after rust removal are required to be synchronously carried out, the painted parts can be additionally arranged on the main body 12, even a millstone can be clamped on the main body 12, after the high-pressure water gun is washed, the pipeline 11 is brushed, and then paint is sprayed; the power source may also be provided by the supply vehicle 14.

The embodiment of the application also discloses a rust removing method for the pipeline 11, which comprises the following steps:

step one: the main body 12 is moved to the position of the pipeline 11, the two rust removing parts 21 are rotated and form the rust removing ring 2 by the splicing bolts 23, and then the clamping arms 33 are driven to clamp the pipeline 11 by the driving piece.

Step two: climbing, intermittently starting the two cylinders 32 to stretch and retract, so that the clamping arms 33 can not clamp the pipeline 11 any more when moving, and the clamping arms 33 can clamp the pipeline 11 when not moving; the body 12 is then braced by the cylinder 32 to move the body 12 lengthwise along the pipe 11 to the rust position.

Step three: the pipeline 11 is washed by high-pressure water flow through a high-pressure water gun on the rust removing ring 2 to remove rust.

And (3) repeating the second step and the third step to finish the rust removal of the whole pipeline 11.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. Building pipeline rust cleaning device, its characterized in that: the rust removing device comprises a main body (12), wherein two rust removing parts (21) are rotatably connected to the main body (12), the two rust removing parts (21) rotate to splice and form a rust removing ring (2) for a pipeline (11) to pass through, and a high-pressure spray head (22) is arranged on the rust removing ring (2); the main body (12) is also provided with a climbing component for driving the main body to advance on the pipeline (11).

2. A building pipe rust removal apparatus as defined in claim 1, wherein: the climbing assembly comprises two clamping assemblies (3); the two clamping assemblies (3) 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), an air cylinder (32) and two clamping arms (33), wherein the mounting block (31) is connected to the main body (12) in a sliding manner along the length direction of the pipeline (11); the two clamping arms (33) are rotatably connected to the mounting block (31), and the two clamping arms (33) rotate to clamp or unclamp the pipeline (11); the air cylinder (32) is used for driving the mounting block (31) to slide; the main body (12) is also provided with a driving component for driving the clamping arm (33) to rotate.

3. A building pipe rust removal apparatus as claimed in claim 2, wherein: the driving assembly comprises a sliding block (41) and a pull rope (42); the two clamping arms (33) are rotatably connected after crossing; the clamping arm (33) comprises a clamping part (331) and a rotating part (332), the clamping part (331) is fixedly connected with the rotating part (332), and one end, close to the clamping part (331), of the rotating part (332) is rotationally connected with the mounting block (31); the sliding block (41) is fixedly connected with the air cylinder (32), two bosses (411) are arranged on the sliding block (41) at intervals, and the two bosses (411) are arranged on two sides of the mounting block (31) along the length direction of the pipeline (11); one end of the pull rope (42) is fixedly connected with one section of the sliding block (41) far away from the air cylinder (32); the other end of the pull rope (42) is fixedly connected with one end of the rotating part (332) away from the clamping part (331).

4. A building pipe rust removal apparatus according to claim 3, wherein: the driving assembly further comprises a roller (43), the roller (43) is rotatably connected to the mounting block (31), the rotation axis of the roller (43) is arranged in the horizontal direction, and the pull rope (42) is erected on the roller (43).

5. A building pipe rust removal apparatus according to claim 3, wherein: the two bosses (411) are slidably connected to the sliding block (41) along the length direction of the pipeline (11), the sliding block (41) is further provided with a tightening bolt (412) for limiting the sliding of the bosses (411), and one end of the tightening bolt (412) is threaded on the bosses (411) in a penetrating mode and abuts against the sliding block (41).

6. The building pipe rust removing apparatus according to claim 5, wherein: a clamping block (51) is connected to the mounting block (31) in a sliding manner along the radial direction of the pipeline (11), and a ratchet groove (13) for the clamping block (51) to be inserted is formed in the main body (12); the mounting block (31) is also provided with a spring (53) for driving the clamping block (51) to be inserted into the ratchet groove (13); the sliding block (41) is also provided with an unlocking piece for driving the clamping block (51) to be far away from the ratchet groove (13).

7. The building pipe rust removing apparatus according to claim 6, wherein: the unlocking piece comprises a plug rod (54), and the plug rod (54) is fixedly connected to a boss (411) close to the air cylinder (32); the clamping block (51) is provided with a groove (52) for the insertion rod (54) to insert, and the insertion rod (54) is provided with a guide surface (55) for the side wall of the groove (52) to abut against so as to drive the clamping block (51) to be far away from the ratchet groove (13).

8. A method of building pipe rust removal, using a building pipe (11) rust removal device according to any one of claims 3 to 7, characterized in that: the method comprises the following steps:

step one: installing; firstly, moving the main body (12) to the position of the pipeline (11), and rotating the rust removing component (21) to splice the rust removing component to form the rust removing ring (2); the clamping part (331) is driven to rotate through a driving piece, so that the clamping part clamps the pipeline (11);

step two: climbing, namely intermittently driving the air cylinder (32) to enable the clamping arm (33) to intermittently clamp the pipeline (11), and driving the main body (12) and the rust removing ring (2) to slide to a rust position along the length direction of the pipeline (11) through the air cylinder (32);

step three: and (3) rust removal: and (3) flushing the pipeline (11) with high-pressure water through a high-pressure spray nozzle (22) on the rust removing ring (2) to remove rust.