Rust removal device for inner wall and outer wall of large-diameter steel pipe

Abstract

The invention provides a large-diameter steel pipe inner and outer wall rust removal device and belongs to the technical field of material rust removal equipment. The large-diameter steel pipe inner and outer wall rust removal device comprises a base, a placing mechanism is arranged at one end of the base, and a rust removal mechanism is slidably arranged at the other end; the rust removal mechanism comprises a mounting disc, a plurality of rotating seats are circumferentially distributed on the mounting disc, rotating shafts are arranged in the centers of the rotating seats and rotationally arranged on the mounting disc, supporting rods are fixedly arranged at the edge positions of the rotating seats, and a mounting seat is arranged at the end, away from the mounting disc, of each supporting rod; a polishing assembly is slidably arranged on the mounting base in the length direction of the mounting base. An inner adjusting assembly used for driving the multiple sets of grinding assemblies to abut against the inner wall of the steel pipe at the same time is arranged in the center of the mounting disc, and an outer adjusting assembly used for driving the multiple sets of grinding assemblies to abut against the outer wall of the steel pipe at the same time is arranged on the edge of the mounting disc. The large-diameter steel pipe derusting device can efficiently complete derusting operation on a large-diameter steel pipe, and meanwhile, the labor intensity of workers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of material rust removal equipment, and in particular to a device for removing rust from inner and outer walls of a large-diameter steel pipe. Background Art

[0002] With the rapid development of my country's highway transportation, the design of highway bridge structures has become more and more advanced, and various novel bridges have emerged. Large-diameter steel pipes are widely used in bridge engineering due to their excellent mechanical properties. Steel tube concrete arch bridge is a bridge structure that combines the advantages of steel tubes and concrete. Large-diameter steel pipes are used as the main load-bearing components of the arch ribs; in addition, large-diameter steel pipes may also be used in other types of bridge structures, such as cable-stayed bridges, suspension bridges, etc., as load-bearing components of main towers, main cable anchorage points or other key parts.

[0003] At present, most construction steel pipes are directly piled up on construction sites. They are not used for a long time and are exposed to wind and sun, which easily forms rust and other impurities and pollutants on the surface of the steel pipes, greatly affecting the use of the construction steel pipes. Therefore, rust removal is very important.

[0004] For some small-diameter steel pipes, there are currently special rust removal equipment that can remove rust by inserting a grinding roller into the steel pipe; while for large-diameter steel pipes, rust removal is currently mostly done manually with handheld tools, which has high labor intensity and low rust removal efficiency. Summary of the invention

[0005] The object of the present invention is to provide a device for removing rust from the inner and outer walls of a large-diameter steel pipe, which can efficiently complete the rust removal operation on the large-diameter steel pipe and reduce the labor intensity of manual labor.

[0006] The present invention is realized by the following technical scheme: a device for removing rust from the inner and outer walls of a large-diameter steel pipe, comprising a base, one end of the base is provided with a placing mechanism, and the other end of the base is provided with a rust removing mechanism which is slidably provided along its length direction; the placing mechanism comprises a placing seat, a placing sheet is detachably installed on the placing seat, a driving assembly for driving the steel pipe to rotate is arranged on the placing seat and below the placing sheet, and a through opening for the driving assembly to contact the steel pipe is opened on the placing sheet; the rust removing mechanism comprises a mounting plate, a plurality of support rods are arranged on the mounting plate, and the length directions of the plurality of support rods are all consistent with the length direction of the base and are evenly distributed along the circumferential direction of the mounting plate. A mounting seat is provided at one end of each of the support rods away from the mounting disk, and a grinding assembly is slidably provided on the mounting seat along its own length direction; a plurality of rotating seats are distributed circumferentially on the mounting disk, a rotating shaft is provided at the center of the rotating seat and is rotatably arranged on the mounting disk, a plurality of the support rods are fixedly arranged at the edge positions of the rotating seats in a one-to-one correspondence, and a rotating assembly for driving the rotating shaft to rotate is provided on a side of the mounting disk away from the support rod; an inner adjusting assembly for driving multiple groups of grinding assemblies to simultaneously press against the inner wall of the steel pipe is provided at the center position of the mounting disk, and an outer adjusting assembly for driving multiple groups of grinding assemblies to simultaneously press against the outer wall of the steel pipe is provided at the edge position of the mounting disk.

[0007] Furthermore, the mounting seat includes an outer seat body, a limited sliding groove is provided in the outer seat body along its own length direction, an inner seat body and an abutment are slidably arranged in the limited sliding groove, and a mounting rod is provided on the side of the inner seat body facing the outer body of the outer seat, and the grinding assembly is arranged at the end of the mounting rod away from the inner seat body, and the abutment is used to drive the inner seat body to move in the direction close to the inner wall or outer wall of the steel pipe so that the grinding assembly is tightly pressed against the pipe wall of the steel pipe; the grinding assembly includes a grinding motor, a grinding roller and a support plate, the support plate is fixedly arranged on the mounting rod, the grinding motor is arranged at one end of the support plate close to the mounting seat, and the grinding roller is arranged at one end of the support plate away from the mounting seat and is coaxially connected to the output shaft of the grinding motor; the abutment includes an abutment plate, which is slidably connected in the limited sliding groove, and an elastic pressure sheet is provided on the side of the abutment plate facing the inner seat body.

[0008] Furthermore, the inner adjustment component includes a center column, the length direction of the center column is consistent with the length direction of the base and is fixedly connected to the mounting plate through a connecting rod, and multiple telescopic rods are circumferentially distributed on the center column, and the multiple telescopic rods correspond one-to-one to the multiple mounting seats, and the telescopic rods can extend into the limiting slide groove of the outer seat body and drive the abutment to press against the inner seat body; the telescopic rod includes an outer rod body fixedly set on the center column and an inner rod body slidably set in the outer rod body, and a pressing component for driving multiple inner rod bodies to extend out of the outer rod body at the same time is provided on the center column.

[0009] Furthermore, the pressing assembly includes a fixed plate, a sliding plate, a driving electric cylinder and multiple driving rods, the fixed plate is fixedly set on the central column, the sliding plate is slidably sleeved on the outside of the central column, the driving electric cylinder is set between the fixed plate and the sliding plate, and one end of the driving rod is hinged on the outer circumference of the sliding plate, and the other end is hinged on the inner rod body.

[0010] Furthermore, the outer adjustment component includes a fixed ring, a rotating ring and a plurality of pressure rods, the fixed ring is arranged around the outside of the plurality of mounting seats and is fixedly connected to the mounting plate through a plurality of fixing rods, an annular groove is provided on the outer circumferential surface of the fixed ring, the rotating ring is rotatably arranged in the annular groove, the plurality of pressure rods are all slidably arranged in the annular groove along the radial direction of the fixed ring and correspond one to one to the positions of the plurality of mounting seats, a plurality of pressure grooves are distributed on the inner circumferential surface of the rotating ring, when the rotating ring rotates in the annular groove, the pressure groove can press the pressure rod so that the pressure rod extends into the limiting sliding groove of the outer seat body, and a magnetic sheet that can engage with the pressure rod is provided on the bottom wall of the pressure groove.

[0011] Furthermore, a rotating member for driving the rotating ring to rotate in the annular groove is provided on one side of the fixed ring, and the rotating member includes a servo motor and a driving gear. The servo motor is fixed on the fixed ring through a motor seat, and the driving gear is coaxially connected to the output shaft of the servo motor. The rotating ring is a gear ring meshing with the driving gear.

[0012] Furthermore, the rotating assembly includes a support, a rotating motor, a worm wheel, a worm, a chain and multiple sprockets, the multiple sprockets are coaxially connected to multiple rotating shafts in a one-to-one manner, the chain is wound between the multiple sprockets and can drive the multiple sprockets to rotate synchronously, the support is fixedly arranged on the mounting plate and is located outside one of the rotating shafts, two support blocks are arranged on the support, the worm is rotatably connected between the two support blocks, the rotating motor is fixedly arranged on one of the support blocks and the output shaft of the rotating motor is fixedly connected to the worm, and the worm wheel is coaxially connected to the rotating shaft and meshes with the worm.

[0013] Furthermore, a plurality of sliding rollers are distributed on the inner circumference of the placement sheet, guide strips are arranged on both sides of the bottom of the placement sheet along its length direction, and guide grooves for the guide strips to slide into are opened on both sides of the placement seat along its length direction.

[0014] Furthermore, the placement seat includes a vertical section and a transverse section, the vertical section is fixedly arranged at an end of the base away from the rust removal mechanism, one end of the transverse section is fixedly connected to the top of the vertical section, and the other end extends to an end close to the rust removal mechanism; the driving assembly includes two sliding plates, one of the sliding plates is slidably arranged at the top of the vertical section, and the other sliding plate is slidably arranged at an end of the transverse section away from the vertical section, and pins are provided at ends of the vertical section and the transverse section away from the vertical section, and a plurality of sockets for inserting the pins are distributed along the vertical direction on the two sliding plates, and an installation shaft is rotatably arranged between the two sliding plates, and a plurality of driving wheels are coaxially arranged on the installation shaft, and the plurality of driving wheels are located in the through opening in a one-to-one correspondence, and a driving motor for driving the installation shaft to rotate is provided on one of the sliding plates.

[0015] Furthermore, a motor screw assembly for driving the mounting plate to move is disposed on one side of the base, and a guide assembly for guiding the mounting plate is disposed on the other side of the base.

[0016] The technical solution of the present invention has at least the following advantages and beneficial effects: 1. The present invention places the steel pipe by setting a placement mechanism and can drive the steel pipe to rotate, grinds the pipe wall of the steel pipe by multiple groups of grinding components on the rust removal mechanism, and drives the rust removal mechanism to move as a whole by the motor screw assembly, so that the rust removal process of the large-diameter steel pipe can be completed, and no manual hand-held tools are required for rust removal, which reduces the labor intensity and improves the rust removal efficiency.

[0017] 2. The present invention drives the rotating seat to rotate through the rotating component, that is, the grinding component can be switched from being located inside the steel pipe to being located outside the steel pipe; when the grinding component is located inside the steel pipe, the internal adjustment component drives the mounting seat to drive the grinding component to move, that is, the grinding component can be pressed against the inner wall of the steel pipe with different diameters; when the grinding component is located outside the steel pipe, the external adjustment component drives the mounting seat to drive the grinding component to move, that is, the grinding component can be pressed against the outer wall of the steel pipe with different diameters, thereby adapting to the grinding operation of the inner and outer walls of steel pipes with different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the present invention will be briefly introduced below. It should be understood that the following accompanying drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the use status of the rust removal device for the inner and outer walls of a large-diameter steel pipe provided by the present invention; Figure 2 It is a schematic diagram of the overall structure of the rust removal device for the inner and outer walls of a large-diameter steel pipe of the present invention; Figure 3 It is a structural schematic diagram of the rust removal mechanism of the present invention; Figure 4 It is a structural schematic diagram of the rotating assembly of the present invention; Figure 5 It is a structural schematic diagram of the internal adjustment component and the mounting seat of the present invention; Figure 6 It is a schematic diagram of the structure of the grinding assembly and the mounting seat of the present invention; Figure 7 It is a structural schematic diagram of the external adjustment component and the mounting seat of the present invention; Figure 8 It is a schematic diagram of the internal structure of the external adjustment component of the present invention; Fig. 9 for Figure 8 A magnified view of part A; Fig.10 It is a structural schematic diagram of the placement mechanism of the present invention; Fig.11 It is a schematic diagram of the structure of the driving assembly of the present invention; Icon: 1-base, 11-motor screw assembly, 111-first support plate, 112-driving screw, 113-stepping motor, 12-guide assembly, 121-second support plate, 122-guide rod, 2-placing mechanism, 21-placing seat, 211-vertical section, 212-horizontal section, 2121-guide groove, 213-pin, 22-placing sheet, 221-through port, 222-slide roller, 223-guide strip, 23- Driving assembly, 231-sliding plate, 2311-socket, 232-mounting shaft, 233-driving wheel, 234-driving motor, 3-rust removal mechanism, 31-mounting plate, 32-support rod, 33-mounting seat, 331-outer seat body, 3311-limiting slide groove, 332-inner seat body, 333-abutment member, 3331-abutment plate, 3332-elastic pressure piece, 334-mounting rod, 34-grinding assembly, 341- Grinding motor, 342-grinding roller, 343-support plate, 35-rotating seat, 351-rotating shaft, 36-rotating assembly, 361-support, 362-rotating motor, 363-worm gear, 364-worm, 365-chain, 366-sprocket, 367-support block, 37-inner adjustment assembly, 371-center column, 372-connecting rod, 373-telescopic rod, 3731-outer rod body, 3732-inner rod body, 37 4-pressure assembly, 3741-fixed plate, 3742-sliding plate, 3743-driving electric cylinder, 3744-driving rod, 38-external adjustment assembly, 381-fixing ring, 3811-annular groove, 382-rotating ring, 3821-pressure groove, 3822-magnetic sheet, 383-pressure rod, 384-fixed rod, 385-rotating part, 3851-servo motor, 3852-driving gear, 3853-motor seat. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1 The following reference Figure 1-Figure 11As shown, combined with a specific embodiment, the present invention is a device for removing rust from the inner and outer walls of a large diameter steel pipe, referring to Figure 1 , Figure 2 As shown, it includes a base 1, one end of the base 1 is provided with a placement mechanism 2, and the other end of the base 1 is provided with a rust removal mechanism 3 which is slidably provided along its length direction; the placement mechanism 2 includes a placement seat 21, on which a placement sheet 22 is detachably installed, and a driving assembly 23 for driving the steel pipe to rotate is provided on the placement seat 21 and below the placement sheet 22, and a through hole 221 for the driving assembly 23 to contact the steel pipe is provided on the placement sheet 22. According to the diameter of the steel pipe to be rusted, a placement sheet 22 of suitable specifications is selected, the placement sheet 22 is installed on the placement seat 21, and then the steel pipe is placed on the placement sheet 22; the rust removal mechanism 3 is started to grind the inner wall or outer wall of the steel pipe to achieve rust removal, and the steel pipe is driven to rotate by the driving assembly 23 during the rust removal process. After rust removal of a section of the steel pipe of a specified length is completed, the rust removal mechanism 3 is moved as a whole to a distance in the direction close to the steel pipe so that the next section of the steel pipe can be rusted, until the rust removal process of the entire steel pipe is completed.

[0023] Reference Figure 2 , Figure 3 As shown, the rust removal mechanism 3 includes a mounting plate 31, on which are arranged a plurality of support rods 32, the length directions of the plurality of support rods 32 are consistent with the length direction of the base 1 and are evenly distributed along the circumferential direction of the mounting plate 31, and a mounting seat 33 is arranged at one end of each support rod 32 away from the mounting plate 31, and a grinding assembly 34 is slidably arranged on the mounting seat 33 along its own length direction; a plurality of rotating seats 35 are circumferentially distributed on the mounting plate 31, a rotating shaft 351 is arranged at the center of the rotating seat 35 and is rotatably arranged on the mounting plate 31, a plurality of support rods 32 are fixedly arranged at the edge positions of the rotating seats 35 in a one-to-one correspondence, and a rotating assembly 36 for driving the rotating shaft 351 to rotate is arranged on the side of the mounting plate 31 away from the support rod 32. By driving the rotating shaft 351 to rotate through the driving component 23, the rotating seat 35 can rotate synchronously to change the relative position of the support rod 32 and the mounting disk 31. When the projection of the support rod 32 on the mounting disk 31 is located close to the center of the mounting disk 31, the mounting seat 33 and the grinding component 34 are located inside the steel pipe, and the inner wall of the steel pipe can be derusted; when the projection of the support rod 32 on the mounting disk 31 is located away from the center of the mounting disk 31, the mounting seat 33 and the grinding component 34 are located outside the steel pipe, and the outer wall of the steel pipe can be derusted.

[0024] Reference Figure 2 , Figure 3As shown, an inner adjustment component 37 for driving multiple groups of grinding components 34 to press against the inner wall of the steel pipe at the same time is provided at the center position of the mounting plate 31. When the grinding components 34 are located inside the steel pipe, the mounting seat 33 is driven by the inner adjustment component 37 to drive the grinding components 34 to press against the inner wall of the steel pipe, which can adapt to the grinding operation on the inner wall of the steel pipe with different diameters; an outer adjustment component 38 for driving multiple groups of grinding components 34 to press against the outer wall of the steel pipe at the edge position of the mounting plate 31 is provided. When the grinding components 34 are located outside the steel pipe, the mounting seat 33 is driven by the outer adjustment component 38 to drive the grinding components 34 to press against the outer wall of the steel pipe, which can adapt to the grinding operation on the outer wall of the steel pipe with different diameters.

[0025] Reference Figure 2 As shown, a motor screw assembly 11 for driving the installation disk 31 to move is provided on one side of the base 1, and a guide assembly 12 for guiding the installation disk 31 is provided on the other side of the base 1. The motor screw assembly 11 includes a stepper motor 113, a driving screw 112 and two first support plates 111, the driving screw 112 is rotatably connected between the two first support plates 111, the stepper motor 113 is fixedly arranged on one of the first support plates 111 and can drive the driving screw 112 to rotate, a threaded hole is provided on one side of the bottom of the installation disk 31 and is threadedly connected to the driving screw 112; the guide assembly 12 includes a guide rod 122 and two second support plates 121, the two ends of the guide rod 122 are respectively welded to the sides of the two second support plates 121 close to each other, and a through hole is provided on the other side of the bottom of the installation disk 31 and is slidably connected to the guide rod 122. Start the stepper motor 113 to drive the driving screw 112 to rotate. Under the guidance of the guide rod 122, the mounting plate 31 can slide along the length direction of the base 1, thereby driving the rust removal mechanism 3 as a whole to move towards the direction close to the steel pipe to achieve the grinding operation on the steel pipe.

[0026] Reference Figure 3 , Figure 4As shown, the rotating assembly 36 includes a support 361, a rotating motor 362, a worm wheel 363, a worm 364, a chain 365 and multiple sprockets 366. The multiple sprockets 366 are coaxially connected to the multiple rotating shafts 351 one by one. The chain 365 is wound between the multiple sprockets 366 and can drive the multiple sprockets 366 to rotate synchronously. The support 361 is fixedly mounted on the mounting plate 31 and is located outside one of the rotating shafts 351. Two support blocks 367 are provided on the support 361. The worm 364 is rotatably connected between the two support blocks 367. The rotating motor 362 is fixedly set on one of the support blocks 367 and the output shaft of the rotating motor 362 is fixedly connected to the worm 364. The worm wheel 363 is coaxially connected to the rotating shaft 351 and meshes with the worm 364. By rotating the motor 362 to drive the worm 364 to rotate, the worm wheel 363 can drive one of the rotating shafts 351 to rotate under the meshing action of the worm 364, and the remaining rotating shafts 351 can rotate synchronously under the transmission action of the sprocket 366 and the chain 365, so that the multiple rotating seats 35 can rotate synchronously, thereby changing the relative position of the support rod 32 and the mounting plate 31.

[0027] Reference Figure 5 , Figure 6 As shown, the mounting seat 33 includes an outer seat body 331, and a limited sliding groove 3311 is provided in the outer seat body 331 along its length direction. An inner seat body 332 and abutment member 333 are slidably installed in the limited sliding groove 3311. A mounting rod 334 is provided on the side of the inner seat body 332 facing the outer side of the outer seat body 331, and the grinding assembly 34 is installed on the end of the mounting rod 334 away from the inner seat body 332. By applying a force to the abutment member 333 through the inner adjustment assembly 37 or the outer adjustment assembly 38, the abutment member 333 can drive the inner seat body 332 to move toward the inner wall or outer wall of the steel pipe, so that the grinding assembly 34 is pressed against the inner wall or outer wall of the steel pipe, so that the grinding operation can be carried out smoothly.

[0028] Reference Figure 6As shown, the grinding assembly 34 includes a grinding motor 341, a grinding roller 342 and a support plate 343. The support plate 343 is fixedly arranged on the mounting rod 334. The grinding motor 341 is arranged at one end of the support plate 343 close to the mounting seat 33. The grinding roller 342 is arranged at one end of the support plate 343 away from the mounting seat 33 and is coaxially connected with the output shaft of the grinding motor 341. The grinding motor 341 is started and the output shaft of the grinding motor 341 drives the grinding roller 342 to rotate, so that the pipe wall of the steel pipe can be polished. The abutment member 333 includes an abutment plate 3331, which is slidably connected in the limiting slide groove 3311, and an elastic abutment sheet 3332 is arranged on the side of the abutment plate 3331 facing the inner seat body 332. When the inner adjustment component 37 or the outer adjustment component 38 drives the abutment plate 3331 to move toward the side close to the inner seat body 332, the elastic pressing sheet 3332 can be pressed tightly against the inner seat body 332, so that the grinding roller 342 abuts against the inner wall or outer wall of the steel pipe.

[0029] Reference Figure 3 , Figure 5 As shown, the inner adjustment component 37 includes a center column 371, the length direction of the center column 371 is consistent with the length direction of the base 1 and is fixedly connected to the mounting plate 31 through a connecting rod 372, and a plurality of telescopic rods 373 are distributed circumferentially on the center column 371, and the plurality of telescopic rods 373 correspond one to one with the plurality of mounting seats 33, and the telescopic rods 373 can extend into the limiting slide groove 3311 of the outer seat body 331 and drive the abutment member 333 to press against the inner seat body 332; the telescopic rod 373 includes an outer rod body 3731 fixedly set on the center column 371 and an inner rod body 3732 slidably set in the outer rod body 3731, and a pressing component 374 is arranged on the center column 371. Through the pressing assembly 374, multiple inner rod bodies 3732 are driven to extend outward from the outer rod body 3731 at the same time, and the end of the inner rod body 3732 located outside the outer rod body 3731 can be inserted into the limiting slide groove 3311 of the outer seat body 331. During the process of the inner rod body 3732 continuing to extend, a thrust force can be applied to the abutment 333, so that the abutment 333 drives the inner seat body 332 to move and drive the grinding roller 342 of the grinding assembly 34 to press against the inner wall of the steel pipe, thereby realizing the grinding operation of the inner wall of the steel pipe.

[0030] Reference Figure 5As shown, the pressing assembly 374 includes a fixed plate 3741, a sliding plate 3742, a driving electric cylinder 3743 and a plurality of driving rods 3744. The fixed plate 3741 is fixedly arranged on the central column 371, the sliding plate 3742 is slidably sleeved on the outside of the central column 371, the driving electric cylinder 3743 is arranged between the fixed plate 3741 and the sliding plate 3742, and one end of the driving rod 3744 is hingedly arranged on the outer circumference of the sliding plate 3742, and the other end is hingedly arranged on the inner rod body 3732. Starting the driving electric cylinder 3743 and moving the piston rod of the driving electric cylinder 3743 outward from the cylinder barrel can drive the sliding plate 3742 to move along the length direction of the center column 371 in the direction away from the mounting plate 31. During the movement of the sliding plate 3742, the plurality of driving rods 3744 can be driven to move synchronously, thereby driving the plurality of inner rod bodies 3732 to move outward from the outer rod body 3731 at the same time, so that the inner rod body 3732 can be inserted into the limiting slide groove 3311.

[0031] Reference Figure 7 , Figure 8 As shown, the external adjustment component 38 includes a fixed ring 381, a rotating ring 382 and a plurality of pressure rods 383. The fixed ring 381 is arranged around the outside of the plurality of mounting seats 33 and is fixedly connected to the mounting plate 31 through a plurality of fixed rods 384. An annular groove 3811 is provided on the outer circumferential surface of the fixed ring 381. The rotating ring 382 is rotatably arranged in the annular groove 3811. The plurality of pressure rods 383 are all slidably arranged in the annular groove 3811 along the radial direction of the fixed ring 381 and correspond one by one to the positions of the plurality of mounting seats 33. The inner circumferential surface of the rotating ring 382 is distributed with a plurality of pressure grooves 3821. After the rust on the inner wall of the steel pipe is removed, the relative position of the support rod 32 and the mounting plate 31 is adjusted by the rotating assembly 36 to move the grinding assembly 34 to the outside of the steel pipe, and then the rotating ring 382 is rotated in the annular groove 3811. The pressing groove 3821 can press the pressing rod 383 so that the pressing rod 383 extends into the limiting sliding groove 3311 of the outer seat body 331, thereby applying a resistance force to the abutment 333 and causing the abutment 333 to drive the inner seat body 332 to move toward the outer wall of the steel pipe, thereby making the grinding assembly 34 press against the outer wall of the steel pipe to realize the grinding operation of the outer wall of the steel pipe.

[0032] Reference Figure 7 , Figure 8As shown, a rotating member 385 for driving the rotating ring 382 to rotate in the annular groove 3811 is provided on one side of the fixed ring 381. The rotating member 385 includes a servo motor 3851 and a driving gear 3852. The servo motor 3851 is fixedly disposed on the fixed ring 381 through a motor seat 3853. The driving gear 3852 is coaxially connected to the output shaft of the servo motor 3851. The rotating ring 382 is a gear ring meshing with the driving gear 3852. The servo motor 3851 is started to rotate the driving gear 3852. The rotating ring 382 can rotate synchronously under the meshing action of the driving gear 3852, thereby changing the contact position between the pressure groove 3821 and the pressure rod 383, and applying downward pressure to the pressure rod 383 so that the pressure rod 383 is inserted into the limiting slide groove 3311 of the outer seat body 331. Refer to Fig. 9 As shown, a magnetic sheet 3822 capable of engaging with the pressure rod 383 is provided on the bottom wall of the pressure groove 3821. Under the action of the magnetic sheet 3822, one end of the pressure rod 383 can be adsorbed on the bottom wall of the pressure groove 3821, thereby preventing the pressure rod 383 from moving under the action of its own gravity and affecting the positioning process.

[0033] Reference Fig.10 As shown, a plurality of sliding rollers 222 are distributed on the inner circumference of the placement sheet 22. When the steel pipe is placed on the placement sheet 22, the sliding rollers 222 can reduce the driving force required for the steel pipe to rotate, thereby making the rotation process smoother. Guide strips 223 are provided on both sides of the bottom of the placement sheet 22 along its own length direction, and guide grooves 2121 for the guide strips 223 to slide into are provided on both sides of the placement seat 21 along its own length direction. The placement sheet 22 is detachably mounted on the placement seat 21 through the guide strips 223, so that the placement sheet 22 can be replaced according to steel pipes of different diameters without replacing the placement mechanism 2 as a whole.

[0034] Reference Fig.10 , Fig.11As shown, the placement seat 21 includes a vertical section 211 and a transverse section 212. The vertical section 211 is fixedly arranged at one end of the base 1 away from the rust removal mechanism 3. One end of the transverse section 212 is fixedly connected to the top of the vertical section 211, and the other end extends to the end close to the rust removal mechanism 3. The driving assembly 23 includes two sliding plates 231, one of which is slidably set on the top of the vertical section 211, and the other sliding plate 231 is slidably set on the end of the transverse section 212 away from the vertical section 211. The vertical section 211 and the end of the transverse section 212 away from the vertical section 211 are both provided with a latch 213. A plurality of sockets 2311 for inserting the latch 213 are distributed along the vertical direction on the two sliding plates 231. A mounting shaft 232 is rotatably set between the two sliding plates 231. A plurality of driving wheels 233 are coaxially arranged on the mounting shaft 232. The plurality of driving wheels 233 are located in the through opening 221 in a one-to-one correspondence. A driving motor 234 for driving the mounting shaft 232 to rotate is provided on one of the sliding plates 231. The installation shaft 232 is driven to rotate by the driving motor 234, which can drive multiple driving wheels 233 to rotate synchronously. Under the friction force of the driving wheel 233, the steel pipe can rotate, so that the grinding component 34 can realize the grinding operation of the entire circumferential surface, and multiple grinding components 34 can perform a grinding operation at multiple positions during the process of one rotation of the steel pipe, so as to improve the rust removal effect on the inner wall of the steel pipe.

[0035] When grinding steel pipes of different diameters is required, the placement plates 22 of different specifications need to be replaced, and the height of the bottom of the steel pipe from the ground will change. By moving the positions of the two sliding plates 231 in the vertical direction and inserting the pins 213 into the corresponding positions of the plug holes 2311, the sliding plates 231 can be fixed at a specified height, so that the driving wheel 233 can contact the bottom of the steel pipes of different diameters and drive the steel pipes to rotate.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for removing rust from the inner and outer walls of a large diameter steel pipe, characterized in that: It comprises a base (1), one end of the base (1) is provided with a placement mechanism (2), and the other end of the base (1) is provided with a rust removal mechanism (3) which is slidable along its length direction; The placement mechanism (2) comprises a placement seat (21), a placement sheet (22) is detachably mounted on the placement seat (21), a driving assembly (23) for driving the steel pipe to rotate is arranged on the placement seat (21) and below the placement sheet (22), and a through opening (221) is provided on the placement sheet (22) for the driving assembly (23) to contact the steel pipe; The rust removal mechanism (3) comprises a mounting plate (31), on which a plurality of support rods (32) are arranged, the length directions of the plurality of support rods (32) are consistent with the length direction of the base (1) and are evenly distributed along the circumferential direction of the mounting plate (31), and a mounting seat (33) is arranged at one end of each support rod (32) away from the mounting plate (31), and a grinding assembly (34) is slidably arranged on the mounting seat (33) along its own length direction; A plurality of rotating seats (35) are circumferentially distributed on the mounting plate (31); a rotating shaft (351) is arranged at the center of the rotating seat (35) and is rotatably arranged on the mounting plate (31); a plurality of support rods (32) are fixedly arranged at the edge of the rotating seat (35) in a one-to-one correspondence; a rotating assembly (36) for driving the rotating shaft (351) to rotate is arranged on a side of the mounting plate (31) away from the support rods (32); an inner adjustment assembly (37) for driving a plurality of grinding assemblies (34) to simultaneously press against the inner wall of the steel pipe is arranged at the center of the mounting plate (31); an outer adjustment assembly (38) for driving a plurality of grinding assemblies (34) to simultaneously press against the outer wall of the steel pipe is arranged at the edge of the mounting plate (31).

2. The rust removal device for inner and outer walls of large diameter steel pipes according to claim 1, characterized in that: The mounting seat (33) comprises an outer seat body (331), a limiting slide groove (3311) is provided in the outer seat body (331) along its length direction, an inner seat body (332) and abutment (333) are slidably arranged in the limiting slide groove (3311), a mounting rod (334) is provided on a side of the inner seat body (332) facing the outside of the outer seat body (331), the grinding assembly (34) is arranged at an end of the mounting rod (334) away from the inner seat body (332), and the abutment (333) is used to drive the inner seat body (332) to move in a direction close to the inner wall or outer wall of the steel pipe so that the grinding assembly (34) is pressed against the pipe wall of the steel pipe; the grinding assembly (34) comprises a grinding rod (334) and a grinding rod (334). A grinding motor (341), a grinding roller (342) and a support plate (343), wherein the support plate (343) is fixedly arranged on the mounting rod (334), the grinding motor (341) is arranged at one end of the support plate (343) close to the mounting seat (33), and the grinding roller (342) is arranged at one end of the support plate (343) away from the mounting seat (33) and is coaxially connected to the output shaft of the grinding motor (341); the abutment member (333) comprises an abutment plate (3331), wherein the abutment plate (3331) is slidably connected in the limiting slide groove (3311), and an elastic abutment sheet (3332) is arranged on one side of the abutment plate (3331) facing the inner seat body (332).

3. The rust removal device for inner and outer walls of large diameter steel pipes according to claim 2, characterized in that: The inner adjustment assembly (37) comprises a central column (371), the length direction of the central column (371) is consistent with the length direction of the base (1) and is fixedly connected to the mounting plate (31) through a connecting rod (372), a plurality of telescopic rods (373) are circumferentially distributed on the central column (371), the plurality of telescopic rods (373) correspond to the plurality of mounting seats (33) one by one, and the telescopic rods (373) can extend into the outer seat body (331). The telescopic rod (373) comprises an outer rod body (3731) fixedly arranged on the central column (371) and an inner rod body (3732) slidably arranged in the outer rod body (3731); the central column (371) is provided with a pressing assembly (374) for driving a plurality of inner rod bodies (3732) to extend outward from the outer rod body (3731) at the same time.

4. The rust removal device for inner and outer walls of large diameter steel pipes according to claim 3, characterized in that: The pressing assembly (374) comprises a fixed disk (3741), a sliding disk (3742), a driving electric cylinder (3743) and a plurality of driving rods (3744); the fixed disk (3741) is fixedly arranged on the central column (371); the sliding disk (3742) is slidably sleeved on the outside of the central column (371); the driving electric cylinder (3743) is arranged between the fixed disk (3741) and the sliding disk (3742); one end of the driving rod (3744) is hingedly arranged on the outer circumference of the sliding disk (3742), and the other end is hingedly arranged on the inner rod body (3732).

5. The rust removal device for inner and outer walls of large diameter steel pipes according to claim 2, characterized in that: The outer adjustment component (38) comprises a fixed ring (381), a rotating ring (382) and a plurality of pressure rods (383); the fixed ring (381) is arranged around the outside of the plurality of mounting seats (33) and is fixedly connected to the mounting plate (31) through a plurality of fixed rods (384); an annular groove (3811) is provided on the outer circumferential surface of the fixed ring (381); the rotating ring (382) is rotatably arranged in the annular groove (3811); and the plurality of pressure rods (383) are all slidably arranged in the radial direction of the fixed ring (381). The rotating ring (382) is provided with a plurality of pressing grooves (3821) arranged in the annular groove (3811) and corresponding to the positions of the plurality of mounting seats (33). When the rotating ring (382) rotates in the annular groove (3811), the pressing groove (3821) can press the pressing rod (383) so that the pressing rod (383) extends into the limiting sliding groove (3311) of the outer seat body (331). A magnetic sheet (3822) capable of being attracted to the pressing rod (383) is provided on the bottom wall of the pressing groove (3821).

6. The rust removal device for inner and outer walls of large diameter steel pipes according to claim 5, characterized in that: A rotating member (385) for driving the rotating ring (382) to rotate in the annular groove (3811) is provided on one side of the fixed ring (381), and the rotating member (385) comprises a servo motor (3851) and a driving gear (3852), wherein the servo motor (3851) is fixedly arranged on the fixed ring (381) via a motor seat (3853), and the driving gear (3852) is coaxially connected to the output shaft of the servo motor (3851), and the rotating ring (382) is a gear ring meshing with the driving gear (3852).

7. The rust removal device for inner and outer walls of large diameter steel pipes according to claim 1, characterized in that: The rotating assembly (36) comprises a support (361), a rotating motor (362), a worm wheel (363), a worm (364), a chain (365) and a plurality of sprocket wheels (366). The plurality of sprocket wheels (366) are coaxially connected to the plurality of rotating shafts (351) in a one-to-one correspondence. The chain (365) is wound between the plurality of sprocket wheels (366) and can drive the plurality of sprocket wheels (366) to rotate synchronously. The support (361) is fixedly arranged on the mounting plate (31). The support (361) is provided with two support blocks (367), the worm (364) is rotatably connected between the two support blocks (367), the rotating motor (362) is fixedly provided on one of the support blocks (367), and the output shaft of the rotating motor (362) is fixedly connected to the worm (364), and the worm wheel (363) is coaxially connected to the rotating shaft (351) and meshes with the worm (364).

8. The rust removal device for inner and outer walls of large diameter steel pipes according to claim 1, characterized in that: A plurality of sliding rollers (222) are distributed on the inner circumferential surface of the placement sheet (22), guide strips (223) are arranged on both sides of the bottom of the placement sheet (22) along its length direction, and guide grooves (2121) for the guide strips (223) to slide into are opened on both sides of the placement seat (21) along its length direction.

9. The rust removal device for inner and outer walls of large diameter steel pipes according to claim 8, characterized in that: The placement seat (21) comprises a vertical section (211) and a transverse section (212); the vertical section (211) is fixedly arranged at an end of the base (1) away from the rust removal mechanism (3); one end of the transverse section (212) is fixedly connected to the top of the vertical section (211), and the other end extends toward an end close to the rust removal mechanism (3); The driving assembly (23) comprises two sliding plates (231), wherein one of the sliding plates (231) is slidably arranged at the top of the vertical section (211), and the other sliding plate (231) is slidably arranged at an end of the transverse section (212) away from the vertical section (211); a latch (213) is arranged at one end of the vertical section (211) and the transverse section (212) away from the vertical section (211); a plurality of insertion holes (2311) for inserting the latch (213) are distributed along the vertical direction on the two sliding plates (231); a mounting shaft (232) is rotatably arranged between the two sliding plates (231); a plurality of driving wheels (233) are coaxially arranged on the mounting shaft (232); the plurality of driving wheels (233) are located in a one-to-one correspondence in the through opening (221); and a driving motor (234) for driving the mounting shaft (232) to rotate is arranged on one of the sliding plates (231).

10. The rust removal device for inner and outer walls of large diameter steel pipe according to claim 1, characterized in that: A motor screw assembly (11) for driving the mounting plate (31) to move is disposed on one side of the base (1), and a guide assembly (12) for guiding the mounting plate (31) is disposed on the other side of the base (1).

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