CN112605742B

CN112605742B - Device capable of polishing bent building steel pipe and fastener on bent building steel pipe

Info

Publication number: CN112605742B
Application number: CN202110017225.8A
Authority: CN
Inventors: 王进分
Original assignee: Guangdong Zhongsheng Construction Engineering Co ltd
Current assignee: Guangdong Zhongsheng Construction Engineering Co ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2023-07-04
Anticipated expiration: 2041-01-07
Also published as: CN112605742A

Abstract

The invention discloses a device capable of polishing a curved building steel pipe and a fastener on the steel pipe, which consists of an upper part and a lower part, can be sleeved outside a pipeline to be derusted and polished during working and can walk along the outer surface of the pipeline without manual operation.

Description

Device capable of polishing bent building steel pipe and fastener on bent building steel pipe

Technical Field

The invention relates to a device capable of polishing a bent building steel pipe and a fastener on the bent building steel pipe, and mainly relates to the technical field of building steel pipes.

Background

The steel pipe for the building can be divided into a seamless steel pipe and a seamless steel pipe according to the seam, the seamless steel pipe is divided into a spiral steel pipe and a straight-seam steel pipe according to the difference of welding seams, the spiral steel pipe and the straight-seam steel pipe are very commonly applied to the aspects of building piling, structures, steel structures, bearing, drainage and the like, a large amount of rust can be generated on the outer surface of the steel pipe for a long time after the steel pipe for the building is used, the using effect is influenced, if the steel pipe needs to be continuously used, rust removal and polishing treatment is needed, the connecting part of the pipeline at the present stage contains a fastener, if the steel pipe cannot be polished, if the steel pipe is not detached, the workload of workers is increased, the steel pipe needs to be reloaded after the fastener is detached, time and labor are wasted, the pipeline is provided with a bending part, and rust removal and polishing treatment can not be well carried out on the bending part of the steel pipe at the present stage.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a device capable of polishing a bent building steel pipe and a fastener on the steel pipe, so that the problems are overcome.

The invention is realized by the following technical scheme.

The invention relates to a device capable of polishing a curved building steel pipe and a fastener on the curved building steel pipe, which comprises a curved pipe polishing box and curved pipe polishing cavities arranged in the curved pipe polishing box, wherein the curved pipe polishing box is symmetrically arranged up and down and is semicircular, a curved pipeline is arranged between the curved pipe polishing boxes, a plurality of fasteners are arranged on the curved pipeline, the devices in the curved pipe polishing box are identical and can be attached to the surface of the curved pipeline up and down, each curved pipe polishing cavity is fixedly provided with an arc-shaped electric guide rail which is arranged front and back, each arc-shaped electric guide rail is provided with a sliding block capable of moving along the track, each sliding block is fixedly provided with a supporting telescopic rod, each supporting telescopic rod is fixedly provided with a curved pipe polishing motor, each curved pipe polishing motor is rotationally provided with a curved pipe polishing shaft, each curved pipe polishing plate is fixedly arranged on each curved pipe polishing shaft, the bent pipe polishing sheets can polish the surface of the bent pipe, each sliding block is fixedly provided with a front-back symmetrical fixing rod, each fixing rod is fixedly provided with a supporting rod, each supporting rod is elastically provided with a compression spring, the other ends of the compression springs are fixedly connected with a friction sensor, the left side of a bent pipe polishing cavity is provided with a moving cavity, the moving cavity is positioned inside the bent pipe polishing box, the moving cavity is fixedly provided with a pushing telescopic rod, the pushing telescopic rod is fixedly connected with a meshing rack, the left side of the bent pipe polishing box is rotationally provided with a hinge shaft, the hinge shaft is fixedly provided with a hinge gear, the hinge gear extends to the inside of the moving cavity and can be meshed with the meshing rack for transmission, the rear side of the hinge gear is fixedly provided with a rotary hinge, the left end of the rotary hinge is fixedly provided with a transverse telescopic rod, the transverse telescopic rod can rotate along the rotating hinge and the hinge shaft, the transverse telescopic rod is fixedly provided with a longitudinal telescopic rod, the longitudinal telescopic rod is fixedly provided with a sucker, the sucker can be adsorbed on the outer surface of the bent pipeline, the left end of the longitudinal telescopic rod is fixedly provided with a transverse bracket, the left side of the transverse bracket is elastically provided with an extrusion spring, the left end of the extrusion spring is fixedly connected with a collision sensor, the collision sensor can collide with the fastener to induce the existence of the fastener, the extrusion spring is used for buffering collision force and preventing collision damage, the right end of the bent pipe polishing box is fixedly provided with a fastener polishing box, the fastener polishing box is internally provided with a fastener polishing cavity, the fastener polishing cavity is fixedly provided with a front-rear electric guide rail, the front-rear electric guide rail is provided with a front-rear slider capable of moving back and forth, the front sliding block and the rear sliding block are elastically provided with supporting springs, the other ends of the supporting springs are fixedly provided with rotary polishing motors, rotary shafts are rotatably arranged on the rotary polishing motors, rotary bevel gears are fixedly arranged on the rotary shafts, fastener polishing blocks are fixedly arranged at the top ends of the rotary shafts, symmetrical fixing baffles are fixedly arranged on the front side and the rear side of the rotary polishing motors, supporting baffles are fixedly arranged on the fixing baffles, rotating shafts are rotatably arranged on the supporting baffles, meshing bevel gears are fixedly arranged on the rotating shafts, the meshing bevel gears can mesh with the rotary bevel gears for transmission, side polishing shafts are rotatably arranged above the rotating shafts and are supported by the supporting baffles, side polishing shafts corresponding to the lower sides of the rotating shafts are connected through transmission belts, side polishing discs are fixedly arranged on the side polishing shafts, the fastener polishing block and the side polishing disc can simultaneously carry out rust removal friction on the surface and the side surface of the fastener, so that polishing is more complete and has higher efficiency, the existence of the supporting spring enables the fastener polishing block and the side polishing disc to synchronously move and be always attached to the surface of the fastener, the electric hinge is characterized in that the electric hinge is convenient to polish, the right end of the fastener polishing box is provided with an electric hinge which can rotate, the electric hinge is provided with a hinged manipulator, the manipulator can move along the electric hinge, the manipulator is fixedly provided with a laminating disc, and the laminating disc can be attached to the outer surface of the bent pipeline for adsorption.

Further, the bent pipe polishing piece is not contacted with the bent pipe at the beginning, after the friction sensor is attached to the bent pipe, the supporting telescopic rod is started to drive the bent pipe polishing piece to extend to be attached to the bent pipe, the friction sensor is electrically connected with the arc-shaped electric guide rail, when the friction sensor senses that friction force is still generated, the surface of the bent pipe on the front side and the rear side is not polished completely, and therefore the sliding block can move to the arc-shaped electric guide rail to polish the bent pipe for many times completely.

Further, the upper side of the bent pipe polishing box and the inside of the fastener polishing box are respectively fixedly provided with an electromagnet which is symmetrical in front-back direction, the lower side of the bent pipe polishing box and the inside of the fastener polishing box are respectively fixedly provided with a magnet which is symmetrical in front-back direction, and the electromagnets are in one-to-one correspondence with the magnets and can attract each other.

Further, each transverse support is fixedly provided with an oblique support, each oblique support is fixedly provided with a connection sensor, after the collision sensor collides with the corresponding fastener, the extrusion spring is extruded, and meanwhile the oblique support moves leftwards for a small distance to enable the connection sensor to be in contact with the corresponding fastener, so that the connection sensor can continuously contact with the corresponding fastener when the longitudinal telescopic rod stretches, and the bent pipe polishing box can move leftwards continuously through the corresponding fastener.

Further, the fastener polishing block is of a spherical design, the fastener is of a middle bulge type, the supporting spring and the matched movement of the fastener polishing block enable the fastener polishing block to be more complete when cleaning the surface of the fastener, and the fastener polishing block cannot be damaged due to collision with the bulge of the fastener.

The invention has the beneficial effects that: the invention is composed of an upper part and a lower part, can be sleeved outside a pipeline to be derusted and polished during working and can walk along the outer surface of the pipeline without manual operation, the invention can derusting and polishing the outer surface of the pipeline simultaneously when walking along the surface of the pipeline, can be separated from an adsorption state up and down when meeting the blocking of a fastener, thereby stretching across the fastener, and can derusting and polishing the surface and the side surface of the fastener together when moving above the fastener, thereby greatly facilitating the polishing and derusting treatment of the outer side of the pipeline, reducing the workload of a user, and being capable of turning to walk along the pipeline continuously when meeting the bent pipeline, leading the derusting and polishing effect to be better.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art.

The invention will be further described with reference to the drawings and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the structure of A-A in fig. 1.

Fig. 3 is a schematic diagram of the structure of B-B in fig. 1.

Fig. 4 is an enlarged schematic view of the structure of fig. 1C.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, wherein for convenience of description, the orientations described below are now defined as follows: the vertical, horizontal, front-rear directions described below are identical to the vertical, horizontal, front-rear directions of the projection relationship of fig. 1 itself.

The device capable of polishing the curved building steel pipe and the fasteners on the curved building steel pipe comprises a curved polishing box 10 and curved polishing cavities 11 which are arranged in the curved polishing box 10, wherein the curved polishing box 10 is vertically symmetrically arranged and is semicircular, a curved pipeline 32 is arranged between the curved polishing boxes 10, a plurality of fasteners 33 are arranged on the curved pipeline 32, devices in the curved polishing box 10 are identical and can be vertically attached to the surfaces of the curved pipeline 32, each curved polishing cavity 11 is fixedly provided with an arc-shaped electric guide rail 12 which is arranged in front of and behind, a sliding block 13 which can move along a track is arranged on the arc-shaped electric guide rail 12, a supporting telescopic rod 14 is fixedly arranged on the sliding block 13, a curved polishing motor 15 is fixedly arranged on the supporting telescopic rod 14, a curved polishing plate 17 is fixedly arranged on the curved polishing shaft 16, the curved pipeline 32 can be polished, a curved pipeline 32 surface is completely the same and can be vertically attached to the curved pipeline 32, a curved pipeline is fixedly provided with a spring rod 46 which is fixedly arranged on the left side of the curved pipeline 18, a sliding block 46 is fixedly arranged on the sliding block 13, a sliding rod 45 is fixedly arranged on the left side of the curved pipeline 18, a sliding rod 46 is fixedly arranged on the sliding rod 18, a sliding rod 45 is fixedly arranged on the sliding rod 46, a sliding rod 45 is fixedly arranged on the sliding rod 18, a sliding rod 45 is fixedly arranged on the sliding rod, and the sliding rod is fixedly arranged on the sliding rod 18, a sliding rod is fixedly arranged on the sliding rod 18, and a sliding rod is fixedly arranged on the sliding rod 18 is fixedly arranged 45, a sliding rod is fixedly arranged 45 and a sliding rod is fixedly arranged and a sliding rod 18. The hinge gear 22 extends into the movement cavity 18 and can be meshed with the meshing rack 20 for transmission, a rotary hinge 23 is fixedly arranged at the rear side of the hinge gear 22, a transverse telescopic rod 24 is fixedly arranged at the left end of the rotary hinge 23, the transverse telescopic rod 24 can rotate along the rotary hinge 23 and the hinge shaft 21, a longitudinal telescopic rod 25 is fixedly arranged on the transverse telescopic rod 24, a sucker 26 is fixedly arranged on the longitudinal telescopic rod 25, the sucker 26 can be adsorbed on the outer surface of the curved pipeline 32, a transverse bracket 27 is fixedly arranged at the left end of the longitudinal telescopic rod 25, a pressing spring 28 is elastically arranged at the left side of the transverse bracket 27, a collision sensor 29 is fixedly connected at the left end of the pressing spring 28, the collision sensor 29 can collide with the fastener 33 to sense the existence of the fastener 33, the extrusion spring 28 is used for buffering collision force and preventing collision damage, the right end of the bent pipe polishing box 10 is fixedly provided with a fastener polishing box 34, the fastener polishing box 34 is internally provided with a fastener polishing cavity 35, the fastener polishing cavity 35 is internally fixedly provided with a front-back electric guide rail 36, the front-back electric guide rail 36 is provided with a front-back sliding block 37 capable of moving back and forth, the front-back sliding block 37 is elastically provided with a supporting spring 38, the other end of the supporting spring 38 is fixedly provided with a rotary polishing motor 49, the rotary polishing motor 49 is rotatably provided with a rotary shaft 50, the rotary shaft 50 is fixedly provided with a rotary bevel gear 52, the top end of the rotary shaft 50 is fixedly provided with a fastener polishing block 51, the front side and the rear side of the rotary polishing motor 49 are fixedly provided with symmetrical fixed baffles 53, the fixed baffles 53 are fixedly provided with supporting baffles 54, the supporting baffles 54 are rotatably provided with rotary shafts 55, the utility model discloses a fastener polishing device is characterized by comprising a rotating shaft 55, a rotating plate 54, a support baffle 54, a fastener polishing box 34, a clamp polishing block 51, a clamp polishing disc 60, a support spring 38, a clamp polishing disc 41, a clamp polishing disc 33, a clamp polishing disc 41, a clamp polishing box 34, a clamp polishing box 40 and a clamp polishing disc 41, wherein the rotating shaft 55 is fixedly provided with a meshing bevel gear 56, the meshing bevel gear 56 is fixedly arranged on the rotating shaft 55, the meshing bevel gear 56 can be meshed with the rotating bevel gear 52 for transmission, the side polishing shaft 58 is rotatably arranged above the rotating shaft 55, the clamp polishing disc 58 is also supported by the support baffle 54, the side polishing shaft 58 is in transmission connection with the rotating shaft 55 through a transmission belt 57, the clamp polishing disc 60 is fixedly arranged on the side polishing shaft 58, the clamp polishing block 51 can simultaneously carry out rust removal friction on the surface and the side of the clamp polishing disc 33, the clamp polishing disc 60 can synchronously move and always be attached to the surface of the clamp polishing disc 32, the clamp polishing disc 41 is conveniently polished, the right end of the clamp polishing box 34 is provided with a rotatable electric hinge 39, and the manipulator 40 is fixedly provided with an attaching disc 41 to the clamp polishing disc 41.

Advantageously, the bent pipe polishing sheet 17 is not in contact with the bent pipe 32 at the beginning, after the friction sensor 47 is attached to the bent pipe 32, the support telescopic rod 14 is started to drive the bent pipe polishing sheet 17 to extend so as to attach to the bent pipe 32, and the friction sensor 47 is electrically connected with the arc-shaped electric guide rail 12, when a certain friction sensor 47 on the front and rear sides senses that friction force is still generated, the surface of the bent pipe 32 on that side is not polished completely, so that the sliding block 13 can move along the arc-shaped electric guide rail 12 to that side to polish the bent pipe for many times completely.

Advantageously, electromagnets 42 which are symmetrical in front and back are fixed in the bent pipe grinding box 10 and the fastener grinding box 34 at the upper side, magnets 43 which are symmetrical in front and back are fixed in the bent pipe grinding box 10 and the fastener grinding box 34 at the lower side, and the electromagnets 42 and the magnets 43 are in one-to-one correspondence and can attract each other.

Advantageously, each of the transverse brackets 27 is fixedly provided with a diagonal bracket 31, each diagonal bracket 31 is fixedly provided with a connection sensor 30, after the collision sensor 29 collides with the fastener 33, the extrusion spring 28 is extruded, and the diagonal brackets 31 are moved leftwards by a small distance to enable the connection sensor 30 to contact with the fastener 33, so that the connection sensor 30 can continuously contact with the fastener 33 when the longitudinal telescopic rod 25 is extended, and the bent pipe grinding box 10 can move leftwards continuously through the fastener 33.

Advantageously, the fastener sanding block 51 is of spherical design, the fastener 33 is of convex shape in the middle, the supporting spring 38 and the mating movement of the fastener sanding block 51 enable the fastener sanding block 51 to clean the surface of the fastener 33 more completely, and the fastener sanding block 51 is not damaged by collision with the convex part of the fastener 33.

The sequence of the mechanical actions of the whole device: the upper and lower side bent pipe grinding boxes 10 are attached to the outer surfaces of the bent pipe 32, the upper and lower side fastener grinding boxes 34 are also attached, the electromagnet 42 is started to absorb the magnet 43, so that the bent pipe grinding boxes 10 and the fastener grinding boxes 34 are changed into a closed whole, at the moment, the upper and lower side longitudinal telescopic rods 25 are extended to absorb the outer surfaces of the bent pipe 32 by the suckers 26, the mechanical arm 40 is started to rotate along the electric hinge 39 to absorb the bent pipe 32 by the attaching disc 41, after the positions of the bent pipe grinding boxes 10 and the fastener grinding boxes 34 are fixed, the friction sensor 47 abuts against the bent pipe 32 to squeeze the compression spring 46, the supporting telescopic rods 14 are extended to enable the bent pipe grinding disc 17 to be in contact with the surface of the bent pipe 32, meanwhile, the bent pipe grinding motor 15 is started to drive the bent pipe grinding shaft 16 and the bent pipe grinding disc 17 to rotate, so that the bent pipe grinding disc 17 can derusting and grind the outer surfaces of the bent pipe 32, the arc-shaped electric guide rail 12 starts to drive the sliding block 13 to rotate forwards and backwards along the semicircular track so that the bent pipe polishing sheet 17 can clear the surface of the bent pipe 32, the friction sensor 47 always detects the friction force on the other side so as to judge whether the other side is derusted, so that the semicircular motion of the sliding block 13 along the track is controlled, the more thorough polishing of the surface of the bent pipe 32 is ensured, the bent pipe polishing box 10 needs to continue to move leftwards after one section of bent pipe 32 is polished, the sucking disc 26 is not adsorbed, the transverse telescopic rod 24 starts to extend so that the sucking disc 26 is moved to the left side for a certain distance and then is adsorbed again, the transverse telescopic rod 24 retracts to drive the bent pipe polishing box 10 to move leftwards, the manipulator 40 rotates along the electric hinge 39 so as to assist in supporting and is adsorbed on the surface of the bent pipe 32 again through the attaching disc 41, repeating the above movement can remove rust and polish the surface of the straight bent pipeline 32, the collision sensor 29 collides with the fastener 33 and is extruded when moving, the connection sensor 30 contacts with the fastener 33, the longitudinal telescopic rod 25 stretches to enable the bent pipe polishing box 10 to stretch outwards, the connection sensor 30 stops after being separated from contact with the fastener 33, the suction cup 26 stops adsorbing, the longitudinal telescopic rod 25 retracts with the suction cup 26, the transverse telescopic rod 24 starts stretching to pass through the fastener 33, the longitudinal telescopic rod 25 re-stretches to enable the suction cup 26 to adsorb the bent pipeline 32 on the left side of the fastener 33, the attaching disc 41 stops adsorbing, the transverse telescopic rod 24 retracts to the original position, the bent pipe polishing box 10 is driven to move leftwards, the manipulator 40 drives the attaching disc 41 to move to re-adsorb the bent pipeline 32 when the fastening polishing box 34 is positioned above the fastener 33, the longitudinal telescopic rod 25 is shortened to enable the inside of the fastener polishing cavity 35 to be in contact with the fastener 33, the fastener polishing blocks 51 are in surface contact with the fastener 33, meanwhile, the side polishing plates 60 are arranged on two sides of the fastener 33, the rotary polishing motor 49 is started to drive the rotary shaft 50 and the fastener polishing blocks 51 to rotate, the fastener polishing blocks 51 polish the surface of the fastener 33, the rotary shaft 50 drives the rotary bevel gear 52 to rotate, the rotary bevel gear 52 drives the meshed bevel gear 56 to rotate, the meshed bevel gear 56 drives the rotary shaft 55 to rotate, the rotary shaft 55 drives the side polishing shafts 58 to rotate through the transmission belt 57, the side polishing shafts 58 drive the side polishing plates 60 to rotate, two sides of the fastener 33 can be polished, meanwhile, the front and rear electric guide rails 36 are started to enable the front and rear sliding blocks 37 to move forwards and backwards, so that the fastener 33 can be polished thoroughly, after polishing, the longitudinal telescopic rod 25 drives the bent pipe polishing box 10 to extend to the outer side of the fastener 33 and can not collide with the bent pipe polishing box, and then the bent pipe polishing box continues to move leftwards, when the collision sensor 29 at one end collides with the collision sensor 29 at the other end does not collide, the road bends, the sucking disc 26 is separated from adsorption, the transverse telescopic rod 24 drives the longitudinal telescopic rod 25 and the sucking disc 26 to extend, the telescopic rod 19 is pushed to start extending or shortening, the meshing rack 20 drives the hinge gear 22 to rotate, the hinge gear 22 drives the hinge shaft 21 and the hinge 23 to rotate, the transverse telescopic rod 24 can rotate to be better attached with the bent pipe 32, and the bent pipe polishing plate 17 and the bent pipe 32 can be always perpendicularly intersected by the bending angle when the bent pipe polishing box 10 moves, so that the purpose of polishing the bent part is achieved.

The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and implement it without limiting the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. The utility model provides a device that can polish to crooked building steel pipe and fastener on it, including return bend polish case and set up in return bend polish chamber in the return bend polish case, its characterized in that: the bending pipe polishing box is vertically symmetrically arranged and is semicircular, a bending pipe is placed between the bending pipe polishing boxes, a plurality of fasteners are arranged on the bending pipe, devices in the bending pipe polishing box are identical and can be vertically attached to the surface of the bending pipe, each bending pipe polishing cavity is internally and fixedly provided with an arc-shaped electric guide rail which is arranged front and back, the arc-shaped electric guide rail is provided with a sliding block capable of moving along the track, the sliding block is fixedly provided with a supporting telescopic rod, the supporting telescopic rod is fixedly provided with a bending pipe polishing motor, the bending pipe polishing motor is rotatably provided with a bending pipe polishing shaft, the bending pipe polishing shaft is fixedly provided with a bending pipe polishing sheet, the bending pipe polishing sheet can polish the surface of the bending pipe, each sliding block is fixedly provided with a front-back symmetrical fixed rod, the fixed rod is fixedly provided with a supporting rod, the supporting rod is elastically provided with a compression spring, the other end of the compression spring is fixedly connected with a friction sensor, the left side of the bending pipe polishing cavity is provided with a moving cavity, the bending pipe polishing motor is rotatably provided with a bending pipe polishing shaft, the bending pipe polishing shaft is rotatably provided with a bending pipe polishing blade, the left side of the bending pipe polishing cavity is rotatably provided with a fixing rod is rotatably provided with a fixing telescopic rod, the bending pipe is rotatably provided with a fixing telescopic rod, the fixing rod is rotatably meshed with a fixing telescopic rod, and the fixing telescopic rod is rotatably provided with a fixing telescopic rod, and the fixing telescopic rod is meshed with a sliding rod is rotatably arranged inside the bending pipe. The sucker can be adsorbed on the outer surface of the bent pipeline, the left end of the longitudinal telescopic rod is fixedly provided with a transverse bracket, the left side of the transverse bracket is elastically provided with an extrusion spring, the left end of the extrusion spring is fixedly connected with a collision sensor, the collision sensor can collide with the fastener to sense the existence of the fastener, the extrusion spring is used for buffering collision force and preventing collision damage, the right end of the bent pipe polishing box is fixedly provided with a fastener polishing box, the fastener polishing box is internally provided with a fastener polishing cavity, the fastener polishing cavity is fixedly provided with a front-rear electric guide rail, the front-rear electric guide rail is provided with a front-rear sliding block capable of moving forwards and backwards, the front-rear sliding block is elastically provided with a supporting spring, the other end of the supporting spring is fixedly provided with a rotary polishing motor, the rotary polishing motor is rotationally provided with a rotary shaft, the rotary bevel gear is fixedly arranged on the rotary shaft, the fastener polishing blocks are fixedly arranged at the top end of the rotary shaft, symmetrical fixing baffles are fixedly arranged on the front side and the rear side of the rotary polishing motor, supporting baffles are fixedly arranged on the fixing baffles, rotating shafts are rotatably arranged on the supporting baffles, meshing bevel gears are fixedly arranged on the rotating shafts, the meshing bevel gears can be meshed and driven with the rotary bevel gears, side polishing shafts are rotatably arranged above the rotating shafts, the side polishing shafts are supported by the supporting baffles, the side polishing shafts are correspondingly connected with the rotating shafts below through transmission belts, side polishing disks are fixedly arranged on the side polishing shafts, so that the fastener polishing blocks and the side polishing disks can simultaneously carry out rust removal friction on the surfaces and the side surfaces of the fasteners, the polishing is more complete and has higher efficiency, the support spring enables the fastener polishing block and the side polishing disc to synchronously move and always attach to the surface of the fastener, polishing is convenient, an electric hinge capable of rotating is arranged at the right end of the fastener polishing box, a hinged manipulator is arranged on the electric hinge, the manipulator can move along the electric hinge, an attaching disc is fixedly arranged on the manipulator, and the attaching disc can attach to the outer surface of the bent pipeline for adsorption; the friction sensor is electrically connected with the arc-shaped electric guide rail, and when a friction sensor on the front side and the rear side senses that friction force is still generated, the surface of the bent pipeline on the side is not polished completely, so that the sliding block can move to the side along the arc-shaped electric guide rail to polish the bent pipeline completely for a plurality of times; the upper side of the bent pipe polishing box and the inside of the fastener polishing box are respectively fixedly provided with an electromagnet which is symmetrical in front-back direction, the lower side of the bent pipe polishing box and the inside of the fastener polishing box are respectively fixedly provided with a magnet which is symmetrical in front-back direction, and the electromagnets are in one-to-one correspondence with the magnets and can attract each other.

2. A device for sanding a curved construction steel pipe and fasteners thereon as defined in claim 1 wherein: every all fixed be equipped with the slant support on the horizontal support, all fixed be equipped with on the slant support connect the inductor collision back with the fastener, extrusion spring is extrudeed, makes simultaneously the slant support left motion a short distance makes connect the inductor with the fastener contact, make when the extension of longitudinal extension pole connect the inductor can last with the fastener contact, thereby enable return bend grinding case can pass through the fastener left continuation motion.

3. A device for sanding a curved construction steel pipe and fasteners thereon as defined in claim 2 wherein: the fastener polishing block is of a spherical design, the fastener is of a middle bulge type, the supporting spring and the matched movement of the fastener polishing block enable the fastener polishing block to be more complete when cleaning the surface of the fastener, and the fastener polishing block cannot be damaged due to collision with the bulge of the fastener.