CN215659337U

CN215659337U - Inner wall rust cleaning device suitable for different diameter steel pipes

Info

Publication number: CN215659337U
Application number: CN202120754388.XU
Authority: CN
Inventors: 关学斌
Original assignee: Shanghai Yuncheng Plate Making Co ltd
Current assignee: Shanghai Yuncheng Plate Making Co ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2022-01-28
Anticipated expiration: 2031-04-14

Abstract

The utility model relates to an inner wall rust removing device suitable for steel pipes with different diameters, which comprises a chain pipe, a transmission shaft, a rotary driving assembly, a transmission shaft mounting frame and a base, wherein the rotary driving assembly is mounted on the base; the outside spiral ground winding of chain pipe has the chain mounting bar, and the vertical direction in the chain pipe outside is followed to the chain mounting bar and is distributed, and the chain mounting bar is connected with a plurality of chains. Compared with the prior art, the utility model has the advantages of being suitable for the rust removal of steel pipes with different diameters, good in rust removal effect, small in occupied space, high in working stability and the like.

Description

Inner wall rust cleaning device suitable for different diameter steel pipes

Technical Field

The utility model relates to the field of steel pipe inner wall rust removal devices, in particular to an inner wall rust removal device suitable for steel pipes with different diameters.

Background

Carbon dust can be separated out from the steel pipe in the hot forming process and is attached to the inner wall of the steel pipe; meanwhile, the steel pipe can form rust when meeting rainwater or being placed in an outdoor wet place in the transportation process. When the steel pipe is machined, carbon dust and iron rust fall off and enter a transmission mechanism of a machine tool, the precision of the machine tool is damaged, and meanwhile, manual work and time are required to be invested in cleaning pollution. In addition, due to the existence of carbon dust and iron rust, the workshop environment is influenced, and the workshop 5S management requirements are not met.

The utility model with the publication number of CN104723223B discloses a pipeline inner wall rust removing device, which comprises a first end cover and a second end cover which are hermetically arranged at two ends of a pipeline, wherein a rust removing vehicle is arranged in the pipeline, the rust removing vehicle comprises a pneumatic motor with double output shafts, a plurality of support shafts are arranged on a shell of the pneumatic motor, the end part of each support shaft is provided with a roller, a sanding disc is fixedly arranged on an output shaft of the pneumatic motor, which is close to the first end cover, a plurality of radially arranged support rods are arranged on the sanding disc, the end part of each support rod is provided with a grinding disc, and the output shaft of the pneumatic motor, which is close to the second end cover, is in transmission connection with a shot-blasting machine; the end part of the polishing disc is connected with a traction rope, the traction rope extends out of the first end cover, one end of the shot blasting machine, which is close to the second end cover, is connected with a shot inlet pipe, the pneumatic motor is connected with an air inlet pipe, and the shot inlet pipe and the air inlet pipe both extend out of the second end cover.

This solution has the following drawbacks:

1. when the steel pipes with different diameters are derusted, components such as a supporting shaft, a supporting rod and the like need to be readjusted, the adjustment process is complex, and the application range is small;

2. the rust powder after rust removal is still easy to adhere to the pipeline wall to cause secondary pollution, and the rust removal effect has defects;

3. the structure is complicated, the installation of the steel pipe to be derusted is inconvenient, and the derusting efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide the inner wall rust removing device suitable for steel pipes with different diameters in order to overcome the defects of easy secondary pollution, complex structure and small application range in the prior art.

The purpose of the utility model can be realized by the following technical scheme:

the inner wall rust removing device comprises a chain pipe, a transmission shaft, a rotary driving assembly, a transmission shaft mounting frame and a base, wherein the rotary driving assembly is mounted on the base, the chain pipe and the transmission shaft are both vertically arranged, one end of the transmission shaft is rotatably connected with the transmission shaft mounting frame and supported by the transmission shaft mounting frame, the chain pipe is sleeved at the other end of the transmission shaft, the output end of the rotary driving assembly is connected with the transmission shaft and used for driving the transmission shaft to rotate, and the transmission shaft mounting frame is further connected with the base; the outer side of the chain pipe is connected with a plurality of chains.

The spiral winding of the outside of chain pipe has the chain mounting bar, the chain mounting bar is followed the vertical direction in the chain pipe outside distributes, a plurality of chains are installed on the chain mounting bar.

Furthermore, one side of the chain mounting bar is connected with the chain pipe, the other side of the chain mounting bar is opened towards the outer side of the chain pipe, the chain mounting bar is provided with a plurality of chain mounting holes, the chain comprises a connecting ring and a plurality of chain rings which are sequentially connected, and the connecting ring penetrates through the connecting mounting holes.

Further, one side of the chain mounting bar, which is far away from the chain pipe, inclines towards the lower part of the chain pipe.

Furthermore, the inner wall rust removing device also comprises a first transmission shaft fixing seat, a second transmission shaft fixing seat and a third transmission shaft fixing seat;

the one end of transmission shaft is installed specifically do on the transmission shaft mounting bracket:

the transmission shaft mounting frame comprises a mounting bottom plate and a side plate, one end of the side plate is connected with the periphery of the mounting bottom plate, the other end of the side plate is connected with a base mounting bar, and the mounting bottom plate is provided with a first through hole for the transmission shaft to pass through; the base comprises a first bottom plate, a connecting pin and a second bottom plate which are sequentially connected from top to bottom, the base mounting bar is arranged on the first bottom plate, and the first bottom plate is provided with a second through hole for the transmission shaft to pass through;

install mounting plate's upside first transmission shaft fixing base, downside are installed the secondary drive axle fixing base, install the upside of first bottom plate third transmission shaft fixing base, downside are installed the rotation driving subassembly, first transmission shaft fixing base, secondary drive shaft fixing base and tertiary transmission shaft fixing base all are equipped with the transmission shaft fixed orifices, the lower extreme of transmission shaft connects gradually first transmission shaft fixing base, secondary drive shaft fixing base, tertiary transmission shaft fixing base and rotation driving subassembly's output, the diameter of the lower extreme of transmission shaft is cascaded reduction.

Further, the inner wall rust removing device further comprises an inner sleeve, the inner sleeve is arranged between the chain pipe and the transmission shaft, the length of the inner sleeve is smaller than that of the chain pipe, and the inner sleeve is located at one end, close to the rotary driving assembly, of the chain pipe.

Further, the diameter of the area of the transmission shaft sleeve where the chain tube is sleeved is reduced in a stepped manner or continuously.

Further, the rotary driving assembly comprises a first driving wheel, a synchronous belt, a second driving wheel, a motor and a motor mounting seat, the first driving wheel is fixedly connected with the transmission shaft, the motor is installed on the motor mounting seat, the output end of the motor is connected with the second driving wheel, and the synchronous belt is respectively connected with the first driving wheel and the second driving wheel.

Further, the inner wall rust removing device further comprises a protective cover and a protective cover support, the protective cover is located on the outer side of the chain pipe, a through hole is formed in the bottom surface of the protective cover, the transmission shaft penetrates through the through hole, a ventilation opening is formed in the side face of the bottom end of the protective cover, the bottom end of the protective cover support is connected with the base, and the protective cover support is connected with the outer wall of the protective cover.

Furthermore, the shield is provided with openings distributed from the upper end to the middle part of the shield, and the openings are used for placing the steel pipe into the mechanical arm.

Further, the inner wall rust removing device further comprises a limiting support, a telescopic cylinder and a limiting shaft, wherein the limiting shaft is rotatably connected with the limiting support, the fixed end of the telescopic cylinder is fixedly connected with the limiting support, one end of the limiting shaft is connected with the output end of the telescopic cylinder, the other end of the limiting shaft is provided with a chain pipe fixing groove, and the chain pipe fixing groove is matched with the shape and the size of the top end of the chain pipe.

Compared with the prior art, the utility model has the following advantages:

(1) when the rust removal device is used for removing rust on the inner wall of the steel pipe, the chains spirally distributed along the chain mounting strip can be in full contact with the inner wall of the steel pipe, so that the steel pipe is clear and thorough; due to the characteristic that the chain can be deformed randomly, the chain of the chain pipe can adapt to the rust removal of steel pipes with different diameters, and the opening angle of the chain is different by controlling the rotating speed of the chain pipe, the larger the rotating speed is, the larger the opening angle is, the better the rust removal effect is, and various rust removal requirements can be met; the time consumption of the rust removal process is short, the gripper of the shaft joint robot can not leave in the rust removal process, the next procedure is directly carried out after the rust removal is finished, the working efficiency is high, and the automatic production can be realized;

the chain pipe and the transmission shaft are both vertically arranged, and the steel pipe is also vertically arranged, so that the rust powder can conveniently fall off, and the phenomenon of accumulation or secondary pollution can not be generated;

the utility model discloses a still have simple structure on the whole, the convenient manufacturing, occupation space is little, and advantages such as job stabilization nature height.

(2) The chain mounting bar opens to the outside of chain pipe for chain on the chain mounting bar can not depend on the chain pipe, is difficult for taking place winding phenomenon.

(3) One side that the chain pipe was kept away from to the chain mounting bar inclines to the below of chain pipe, presses close to the chain more in the direction that opens at the during operation for the pulling force of chain during operation is mostly offset by the viscous force of chain mounting bar and chain union coupling department, and other component forces are littleer, and the chain mounting bar is difficult for droing.

(4) Through the structure of first drive wheel, hold-in range and second drive wheel, external with the motor, leave the rotation region, reduce the influence of motor vibrations to rust cleaning work, the mounted position of motor is also more nimble simultaneously.

(5) In order to solve the problem of shaking of the chain tube during rotation, the utility model provides a plurality of guarantee measures, for example, the chain tube made of the quenching stainless steel is selected, so that the density is higher, and the stability during rotation is better; a thinner inner sleeve is nested at the inner side of the chain pipe, so that the overall weight is increased, and the stability during rotation is improved; the chain pipe and the transmission shaft keep a sufficient common contact area and are reinforced by bolts, so that the stability is improved; a rotatable limiting shaft is arranged above the chain tube, and the chain tube is fixed from the upper side in the rotating process, so that the shaking is reduced.

Drawings

FIG. 1 is a schematic structural diagram of an inner wall rust removing device suitable for steel pipes with different diameters in the embodiment of the utility model;

FIG. 2 is a schematic view of the connection between the chain tube and the chain according to the embodiment of the present invention;

FIG. 3 is a schematic view of the structure of a chain tube in an embodiment of the present invention;

FIG. 4 is a schematic view of the structure of a chain in an embodiment of the present invention;

FIG. 5 is an exploded view of an inner wall rust removing apparatus in an embodiment of the present invention;

FIG. 6 is a schematic bottom structure view of an inner wall rust removing apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a rotary drive assembly according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of an inner wall rust removing device with a shield connected thereto according to an embodiment of the present invention;

FIG. 9 is a schematic view of the structure of a shield in an embodiment of the present invention;

FIG. 10 is a first structural view of an inner wall rust removing apparatus to which a restricting shaft is attached in the embodiment of the present invention;

FIG. 11 is a second structural view of an inner wall rust removing device to which a restricting shaft is attached in the embodiment of the present invention;

FIG. 12 is a schematic view showing the working state of the inner wall rust removing apparatus in the embodiment of the present invention;

in the figure, 1, a chain pipe, 2, a transmission shaft, 3, a rotary driving assembly, 301, a first transmission wheel, 302, a synchronous belt, 303, a second transmission wheel, 304, a motor, 305, a motor mounting seat, 4, a transmission shaft mounting frame, 401, a mounting bottom plate, 402, a side plate, 403, a base mounting strip, 5, a base, 501, a first bottom plate, 502, a connecting pin, 503, a second bottom plate, 6, a chain mounting strip, 601, a chain mounting hole, 7, a chain, 701, a connecting ring, 702, a chain ring, 8, an inner sleeve, 9, a shield, 901, a vent, 902, an opening, 10, a shield support, 11, a first transmission shaft fixing seat, 12, a second transmission shaft fixing seat, 13, a third transmission shaft fixing seat, 14, a limiting support, 15, a telescopic cylinder, 16, a limiting shaft, 161, a chain pipe fixing groove, 17, a steel pipe, 18, and a shaft joint robot.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example 1

As shown in fig. 1 and 2, the present embodiment provides an inner wall rust removing device suitable for steel pipes with different diameters, including a chain pipe 1, a transmission shaft 2, a rotary driving assembly 3, a transmission shaft mounting bracket 4 and a base 5, where the rotary driving assembly 3 is mounted on the base 5, the chain pipe 1 and the transmission shaft 2 are both vertically arranged, one end of the transmission shaft 2 is rotatably connected to the transmission shaft mounting bracket 4 and is supported by the transmission shaft mounting bracket 4, the other end of the transmission shaft 2 is sleeved with the chain pipe 1, an output end of the rotary driving assembly 3 is connected to the transmission shaft 2 and is used for driving the transmission shaft 2 to rotate, and the transmission shaft mounting bracket 4 is further connected to the base 5; a plurality of chains 7 are connected to the outside of the chain tube 1, preferably, the plurality of chains 7 are evenly distributed on the outside of the chain tube 1.

In order to facilitate the installation of the chain and ensure the reliability of the chain connection, as a preferred embodiment, the chain installation strip 6 is spirally and circularly wound on the outer side of the chain pipe 1, the chain installation strip 6 is distributed along the vertical direction of the outer side of the chain pipe 1, and a plurality of chains 7 are installed on the chain installation strip 6.

As shown in fig. 12, in use, the steel pipe 17 is driven to move downwards from the upper end of the chain pipe 1 by a driving part, such as a mechanical arm, an axis joint robot 18, etc., until the inner side of the steel pipe 17 corresponds to the chain of the chain pipe 1, the transmission shaft 2 is driven to rotate by the rotary driving assembly 3, and then the chain pipe 1 is driven to rotate, in the rotating process, each chain of the chain pipe 1 is gradually opened to contact the inner wall of the steel pipe 17, and carbon dust and iron rust on the inner wall of the steel pipe 17 are scraped.

When the scheme is adopted for removing rust on the inner wall of the steel pipe, the chains spirally distributed along the chain mounting strip 6 can be in full contact with the inner wall of the steel pipe, so that the steel pipe is clear and thorough; due to the characteristic that the chain can be deformed randomly, the chain 7 of the chain pipe 1 can adapt to the rust removal of steel pipes with different diameters, and the opening angle of the chain is different by controlling the rotating speed of the chain pipe 1, the larger the rotating speed is, the larger the opening angle is, the better the rust removal effect is, and various rust removal requirements can be met; and the rust removing process of the scheme is short in time consumption, the gripper of the shaft joint robot can not leave in the rust removing process, the next procedure is directly carried out after the rust removing is finished, the working efficiency is high, and the automatic production can be realized.

Chain pipe 1 and the equal vertical setting of transmission shaft 2, the steel pipe is also vertical to be placed, can also make things convenient for the rust powder to drop, can not produce the phenomenon of piling up or secondary pollution.

The scheme has the advantages of simple structure, convenience in manufacturing, small occupied space and high working stability.

The thickness of the chain 7 is in the range of 1 mm to 2 mm, preferably 1.5 mm.

As shown in fig. 3, as a preferred embodiment, one side of the chain installation bar 6 is connected to the chain pipe 1, and the other side is opened to the outside of the chain pipe 1, the chain installation bar 6 is provided with a plurality of chain installation holes 601, the chain 7 comprises a connection ring 701 and a plurality of chain rings 702 which are connected in sequence, and the connection ring 701 passes through the connection installation holes. The chain mounting holes 601 on the chain mounting strip 6 are preferably uniformly arranged, so that the rust removing effect of the inner wall of the steel pipe is better and uniform.

As shown in fig. 4, in the present embodiment, each chain 7 includes one connecting ring 701 and three chain rings 702.

The chain mounting bar 6 is opened towards the outer side of the chain pipe 1, so that a chain on the chain mounting bar 6 cannot be attached to the chain pipe 1, and the winding phenomenon is not easy to occur; the chain 7 is installed through the chain installation hole 601 on the chain installation strip 6, and production and manufacturing are facilitated.

As a preferred embodiment, the chain tube 1 and the transmission shaft 2 are of a separated structure, the assembly position of the chain tube and the transmission shaft has a partial nesting contact area, and the chain tube and the transmission shaft are connected and reinforced through a plurality of bolts; the length of the nesting contact area of the chain tube 1 and the transmission shaft 2 is 250 mm in the embodiment, and four bolts are uniformly and fixedly arranged along the outer side of the chain tube 1.

As a preferable embodiment, one side of the chain mounting bar 6, which is far away from the chain pipe 1, inclines to the lower part of the chain pipe 1 and is closer to the opening direction of the chain in work, so that most of the pulling force of the chain in work is offset by the adhesive force at the joint of the chain mounting bar 6 and the chain pipe 1, other component forces are smaller, and the chain mounting bar 6 is not easy to fall off.

As shown in fig. 5 and 6, as a preferred embodiment, the inner wall rust removing device further includes a first transmission shaft fixing seat 11, a second transmission shaft fixing seat 12, and a third transmission shaft fixing seat 13;

the one end of transmission shaft 2 is installed and is specifically do on transmission shaft mounting bracket 4:

the transmission shaft mounting frame 4 comprises a mounting bottom plate 401 and a side plate 402, one end of the side plate 402 is connected to the periphery of the mounting bottom plate 401, the other end of the side plate 402 is connected with a base mounting bar 403, and the mounting bottom plate 401 is provided with a first through hole 404 for the transmission shaft 2 to pass through; the base 5 comprises a first bottom plate 501, a connecting pin 502 and a second bottom plate 503 which are sequentially connected from top to bottom, the base mounting bar 403 is installed on the first bottom plate 501, and the first bottom plate 501 is provided with a second through hole for the transmission shaft 2 to pass through;

first transmission shaft fixing base 11 is installed to mounting plate 401's upside, second transmission shaft fixing base 12 is installed to the downside, third transmission shaft fixing base 13 is installed to first bottom plate 501's upside, rotary drive subassembly 3 is installed to the downside, first transmission shaft fixing base 11, second transmission shaft fixing base 12 and third transmission shaft fixing base 13 all are equipped with the transmission shaft fixed orifices, first transmission shaft fixing base 11 is connected gradually to transmission shaft 2's lower extreme, second transmission shaft fixing base 12, third transmission shaft fixing base 13 and rotary drive subassembly 3's output, the diameter of transmission shaft 2's lower extreme is cascaded reduction.

The first transmission shaft fixing seat 11, the second transmission shaft fixing seat 12 and the third transmission shaft fixing seat 13 all provide powerful support and horizontal limiting for the transmission shaft, and the transmission shaft is stable in rotation due to the design of three bearings and long in service life; the diameter of the lower end of the transmission shaft 2 is reduced in a step mode, so that the transmission shaft 2 can be supported by the third transmission shaft fixing seat 13, and the transmission shaft can be driven to rotate conveniently.

As shown in fig. 2, as a preferred embodiment, the inner wall rust removing device further includes an inner bushing 8, the inner bushing 8 is disposed between the chain pipe 1 and the transmission shaft 2, the length of the inner bushing 8 is smaller than that of the chain pipe 1, and the inner bushing 8 is located at one end of the chain pipe 1 close to the rotary driving assembly 3.

The weight of the whole lower end of the chain tube 1 and the transmission shaft 2 is increased by the arrangement of the inner sleeve 8, so that the center of gravity moves downwards, the chain tube 1 is not easy to shake, and the whole rotating process of the device is more stable.

As a preferred embodiment, the chain tube 1 is made of a quenched stainless steel round tube, so that the shaking problem is reduced.

As a preferred embodiment, the diameter of the area where the transmission shaft 2 is sleeved with the chain tube 1 is reduced in a stepped manner or continuously, so that the center of gravity is also moved downwards, the chain tube 1 is not easy to shake, and the whole rotating process of the device is more stable.

The rotary driving component 3 can be a rotary driving motor, and the output end of the rotary driving motor is connected with a transmission shaft to directly drive the transmission shaft to rotate. As shown in fig. 7, as a preferred embodiment, the rotary driving assembly 3 includes a first driving wheel 301, a timing belt 302, a second driving wheel 303, a motor 304 and a motor mounting base 305, the first driving wheel 301 is fixedly connected to the driving shaft 2, the motor 304 is mounted on the motor mounting base 305, an output end of the motor 304 is connected to the second driving wheel 303, and the timing belt 302 is respectively connected to the first driving wheel 301 and the second driving wheel 303.

Through the structure of first drive wheel 301, hold-in range 302 and second drive wheel 303, can be external with the motor, eliminated the influence of motor vibrations to the device working process, and motor mounted position is also more nimble.

As shown in fig. 8 and 9, as a preferred embodiment, the inner wall rust removing device further comprises a shield 9 and a shield support 10, the shield 9 is located outside the chain pipe 1, a through hole is formed in the bottom surface of the shield 9, the transmission shaft 2 passes through the through hole, a vent 901 is formed in the bottom end side surface of the shield 9, the bottom end of the shield support 10 is connected with the base 5, and the shield support 10 is connected with the outer wall of the shield 9. The setting of guard shield 9 realizes the effective protection to the work area, avoids unexpected risk. The ventilation opening 901 arranged on the side surface of the bottom end of the shield 9 is not easy to accumulate dust, and the ventilation opening 901 can be connected with an exhaust fan for dust removal.

Further, as a preferred embodiment, the shield 9 is provided with openings 902 distributed from the upper end to the middle for the robotic arm to insert the steel pipe. The upper end of the shield 9 is provided with a detection switch for detecting whether a steel pipe is put in or not, thereby automatically starting the rotation driving assembly 3.

As shown in fig. 10 and 11, as a preferred embodiment, the inner wall rust removing device further includes a limiting bracket 14, a telescopic cylinder 15 and a limiting shaft 16, the limiting shaft 16 is rotatably connected with the limiting bracket 14, the fixed end of the telescopic cylinder 15 is fixedly connected with the limiting bracket 14, one end of the limiting shaft 16 is connected with the output end of the telescopic cylinder 15, and the other end is provided with a chain pipe fixing groove 161, and the chain pipe fixing groove 161 is matched with the shape and size of the top end of the chain pipe 1.

During the use, after placing the steel pipe at the operating position, accessible telescoping cylinder 15 drives restriction axle 16 and rotates the top of chain pipe 1, makes the chain pipe fixed slot 161 of the restricted axle 16 in top of chain pipe 1 fixed, makes chain pipe 1 difficult emergence rock, further guarantees the stability of chain pipe 1 at the rotation in-process.

The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. The inner wall rust removing device suitable for steel pipes with different diameters is characterized by comprising a chain pipe (1), a transmission shaft (2), a rotary driving assembly (3), a transmission shaft mounting frame (4) and a base (5), wherein the rotary driving assembly (3) is installed on the base (5), the chain pipe (1) and the transmission shaft (2) are vertically arranged, one end of the transmission shaft (2) is rotatably connected with the transmission shaft mounting frame (4) and supported by the transmission shaft mounting frame (4), the other end of the transmission shaft (2) is sleeved with the chain pipe (1), the output end of the rotary driving assembly (3) is connected with the transmission shaft (2) and used for driving the transmission shaft (2) to rotate, and the transmission shaft mounting frame (4) is further connected with the base (5); the outer side of the chain pipe (1) is connected with a plurality of chains (7).

2. The inner wall rust removing device suitable for the steel pipes with different diameters is characterized in that chain mounting strips (6) are spirally and circumferentially wound on the outer sides of the chain pipes (1), the chain mounting strips (6) are distributed in the vertical direction of the outer sides of the chain pipes (1), and the plurality of chains (7) are mounted on the chain mounting strips (6).

3. The inner wall rust removing device suitable for the steel pipes with different diameters is characterized in that one side of the chain installation strip (6) is connected with the chain pipe (1), the other side of the chain installation strip is opened towards the outer side of the chain pipe (1), the chain installation strip (6) is provided with a plurality of chain installation holes (601), the chain (7) comprises a connection ring (701) and a plurality of chain rings (702) which are connected in sequence, and the connection ring (701) penetrates through the chain installation holes (601).

4. The inner wall rust removing device suitable for the steel pipes with different diameters is characterized in that one side, away from the chain pipe (1), of the chain mounting strip (6) is inclined towards the lower part of the chain pipe (1).

5. The inner wall rust removing device suitable for the steel pipes with different diameters, which is disclosed by claim 1, is characterized by further comprising a first transmission shaft fixing seat (11), a second transmission shaft fixing seat (12) and a third transmission shaft fixing seat (13);

the one end of transmission shaft (2) is installed specifically be on transmission shaft mounting bracket (4):

the transmission shaft mounting frame (4) comprises a mounting bottom plate (401) and a side plate (402), one end of the side plate (402) is connected to the periphery of the mounting bottom plate (401), the other end of the side plate (402) is connected with a base mounting strip (403), and the mounting bottom plate (401) is provided with a first through hole (404) for the transmission shaft (2) to pass through; the base (5) comprises a first bottom plate (501), connecting pins (502) and a second bottom plate (503) which are sequentially connected from top to bottom, the base mounting strip (403) is mounted on the first bottom plate (501), and the first bottom plate (501) is provided with a second through hole for the transmission shaft (2) to pass through;

install the upside of mounting plate (401) first transmission shaft fixing base (11), downside are installed second transmission shaft fixing base (12), install the upside of first bottom plate (501) third transmission shaft fixing base (13), downside are installed rotary drive subassembly (3), first transmission shaft fixing base (11), second transmission shaft fixing base (12) and third transmission shaft fixing base (13) all are equipped with the transmission shaft fixed orifices, the lower extreme of transmission shaft (2) connects gradually the output of first transmission shaft fixing base (11), second transmission shaft fixing base (12), third transmission shaft fixing base (13) and rotary drive subassembly (3), the diameter of the lower extreme of transmission shaft (2) is cascaded reduction.

6. The inner wall rust removing device suitable for the steel pipes with different diameters is characterized by further comprising an inner sleeve (8), the inner sleeve (8) is arranged between the chain pipe (1) and the transmission shaft (2), the length of the inner sleeve (8) is smaller than that of the chain pipe (1), and the inner sleeve (8) is located at one end, close to the rotary driving assembly (3), in the chain pipe (1).

7. The inner wall rust removing device suitable for the steel pipes with different diameters is characterized in that the diameter of the area, where the transmission shaft (2) is sleeved with the chain pipe (1), is reduced in a stepped mode or continuously reduced.

8. The inner wall rust removing device suitable for steel pipes with different diameters is characterized in that the rotary driving assembly (3) comprises a first driving wheel (301), a synchronous belt (302), a second driving wheel (303), a motor (304) and a motor mounting seat (305), the first driving wheel (301) is fixedly connected with the transmission shaft (2), the motor (304) is mounted on the motor mounting seat (305), the output end of the motor (304) is connected with the second driving wheel (303), and the synchronous belt (302) is respectively connected with the first driving wheel (301) and the second driving wheel (303).

9. The inner wall rust removing device suitable for the steel pipes with different diameters is characterized by further comprising a shield (9) and a shield support (10), wherein the shield (9) is located on the outer side of the chain pipe (1), a through hole is formed in the bottom surface of the shield (9), the transmission shaft (2) penetrates through the through hole, a ventilation opening (901) is formed in the side surface of the bottom end of the shield (9), the bottom end of the shield support (10) is connected with the base (5), and the shield support (10) is connected with the outer wall of the shield (9).

10. The inner wall rust removing device suitable for the steel pipes with different diameters is characterized by further comprising a limiting support (14), a telescopic cylinder (15) and a limiting shaft (16), wherein the limiting shaft (16) is rotatably connected with the limiting support (14), the fixed end of the telescopic cylinder (15) is fixedly connected with the limiting support (14), one end of the limiting shaft (16) is connected with the output end of the telescopic cylinder (15), the other end of the limiting shaft is provided with a chain pipe fixing groove (161), and the chain pipe fixing groove (161) is matched with the shape and the size of the top end of the chain pipe (1).