CN113478308B

CN113478308B - Efficient steel pipe polishing and rust removing device for building construction

Info

Publication number: CN113478308B
Application number: CN202110892100.XA
Authority: CN
Inventors: 李金凯
Original assignee: Rongtai Construction Group Co ltd
Current assignee: Rongtai Construction Group Co ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2023-12-19
Anticipated expiration: 2041-08-04
Also published as: CN113478308A

Abstract

The invention discloses a high-efficiency steel pipe polishing and rust removing device for building construction, which comprises a base, wherein supporting rods are respectively fixed at four corners of the top surface of the base, the top ends of the four supporting rods are fixed with the same fixing plate, and a first disc is fixed on the top surface of the base through a plurality of connecting rods. According to the invention, through the arrangement of the second cylinder body, the fourth cylinder body, the first arc-shaped mounting plate and the second arc-shaped mounting plate can be separated from the second cylinder body and the fourth cylinder body which rotate independently, and at the moment, the replacement and mounting work of the steel pipes between the first arc-shaped mounting plates and the second arc-shaped mounting plates can be realized under the condition that the polishing and rust removal work of the steel pipes between the first arc-shaped mounting plates and the second arc-shaped mounting plates is not influenced, and the normal operation of the device is not required to be stopped in the replacement process of the steel pipes, so that the polishing and rust removal work efficiency of the device on the steel pipes is effectively improved.

Description

Efficient steel pipe polishing and rust removing device for building construction

Technical Field

The invention relates to the field of building construction, in particular to a steel pipe efficient polishing and rust removing device for building construction.

Background

After the steel pipe is produced, the steel pipe needs to occupy a large goods yard because of large volume, is not timely shipped, needs to be temporarily stored in an outdoor open warehouse for a long time, is easy to rust, causes dissatisfaction of customers, and simultaneously causes the problems that the steel pipe cannot be sprayed when being sprayed with paint because the surface of the steel pipe is rusted or has residual oxide layers to influence the accuracy of flaw detection, and the like, so that rust removal treatment needs to be carried out on the surface of the steel pipe before shipping and loading or before flaw detection and paint spraying treatment of the steel pipe. At present, the surface of a steel pipe is mostly derusted by adopting a manual angle grinder, the derusting efficiency is low, the labor intensity of workers is high, the working environment is poor, and the physical health of operators is affected. How to improve the rust removal working efficiency of the steel pipe, improve the rust removal working environment of workers and reduce the labor intensity of the workers is a problem to be solved.

Disclosure of Invention

In order to solve the problems, the invention provides a steel pipe efficient polishing and rust removing device for building construction.

The invention is realized by the following technical scheme:

the utility model provides a steel pipe high-efficient rust cleaning device that polishes for construction, includes the base, base top surface four corners department is fixed with branch respectively, and four branch tops are fixed with same fixed plate, be fixed with first disc through a plurality of connecting rod on the base top surface, first disc bottom surface one side fixed mounting has first motor, the output shaft of first motor pierces through first disc and is fixed with first gear, the output shaft and the first disc contact department swivelling joint of first motor, first disc top surface is fixed with first barrel, the axial lead of first barrel matches with the axial lead of first disc, first through groove that supplies first gear to place is seted up to first barrel bottom one side, evenly be fixed with multiunit first fixed block on the first barrel inner circle face, every group first fixed block comprises two second fixed blocks, a first shaft is fixedly connected between two second fixing blocks of each group of first fixing blocks, a first sleeve is sleeved on the first shaft, the first sleeve is rotationally connected with the first shaft, a first pressing plate is fixed on the outer ring surface of the first sleeve, a plurality of first balls are uniformly embedded and fixed on the other end of the first pressing plate, the contact part of the first balls and the first pressing plate is rotationally connected, a first arc-shaped rod is fixed on one side of the first pressing plate, the other end of the first arc-shaped rod penetrates through the inner wall of the first cylinder and is fixedly provided with a first limit ring, the contact part of the first arc-shaped rod and the first cylinder is slidingly connected, a first spring is sleeved on the first arc-shaped rod between the first pressing plate and the inner wall of the first cylinder, a first toothed ring is sleeved in the first cylinder, the first toothed ring is meshed with a first gear, the bottom surface of the first toothed ring is attached to the top surface of the first disc, the first disc bottom surface is fixed with first forked tail ring, first forked tail ring inlays on first disc top surface and rather than contact department swivelling joint, first toothed ring top surface is fixed with the second barrel, the second barrel sets up in first barrel, even a plurality of first mounting groove of seting up on the second barrel outer lane face, all be equipped with a first arc mounting panel in every first mounting groove, first arc mounting panel and first mounting groove sliding connection, first arc mounting panel top surface central authorities department is fixed to inlay and is had first bearing, the inner ring inner fixed sleeve of first bearing has the second axle, the second axle top is fixed with the second gear, second gear top surface central part fixed mounting has first spring barrel, first spring barrel sliding is equipped with first slider, be fixed to be equipped with the third spring between first slider bottom and the first spring barrel inner bottom, the third spring sets up in first spring barrel, first slider top is fixed with first slide bar top and is equipped with first cambered surface and stretches out first fixed cylinder and first cambered surface and first diameter of first arc cylinder and first barrel and first outer lane top surface and first diameter of connecting rod, first cambered surface and first barrel diameter of first cambered surface and first barrel top surface are equipped with first end, first diameter of the first guide bar is equipped with first guide bar, first end and first barrel diameter of the first guide bar is equipped with first cambered surface, first side wall top surface and first barrel top surface is fixed to be connected with first side wall, the axial lead of the outer cambered surface of the first arc-shaped mounting plate is matched with the axial lead of the second cylinder body, a plurality of second balls are uniformly embedded on the inner cambered surface of the first arc-shaped mounting plate, the contact part of the second balls and the first arc-shaped mounting plate is rotationally connected, a first push plate is arranged between the inner cambered surface of the first arc-shaped mounting plate and the inner wall of the first mounting groove, the first push plate is arranged in the first mounting groove, the first push plate is an arc-shaped surface towards one side of the inner cambered surface of the first arc-shaped mounting plate, the diameter of the arc-shaped surface of the first push plate is matched with the diameter of the outer ring surface of the second cylinder body, a plurality of first magnet blocks transversely penetrate through the first push plate, the contact part of the first magnet blocks is in sliding connection with the first push plate, one end of each first magnet block is fixedly connected with the inner wall of the first mounting groove, the other end of each first magnet block is attached to the inner cambered surface of the first arc-shaped mounting plate, a trapezoid block is fixed on the side wall of each first push plate, the other end of each trapezoid block penetrates through the inner wall of the corresponding first mounting groove and is in sliding connection with the contact position of the second cylinder body, first guide rods are symmetrically arranged at the two ends of each trapezoid block, one end of each first guide rod is fixedly connected with the first push plate, the other end of each first guide rod penetrates through the inner wall of the corresponding first mounting groove and is fixedly provided with a second limit ring, the contact position of each first guide rod and the second cylinder body is in sliding connection, a second spring is sleeved on the first guide rod between the second limit ring and the inner ring surface of the second cylinder body, a plurality of trapezoid blocks are arranged at equal intervals from top to bottom, one side of each inclined plane of each trapezoid block is attached with a first pressure plate, the outer ring of the first pressure plate is in a cone shape, a plurality of fifth balls are uniformly embedded on the outer ring surface of the first pressure plate, the fifth balls are in rotary connection with the contact position of the first pressure plate, the first pressing plates are arranged at equal intervals from top to bottom, the axial leads of the first pressing plates are matched, the axial center of the first pressing plates vertically penetrates through first pressing plates at the positions, which are in contact with the first pressing plates, of the first pressing plates, the bottom ends of the first pressing plates are fixedly connected with the center of the top surface of the first circular disc, the first pressing plates are in sliding connection with the contact position of the first pressing plates, the top ends of the first pressing plates are fixedly connected with the bottom of the first push-pull rods, the first pressing plates are meshed with the second gear, the bottom surface of each first pressing plate is fixedly provided with a first push-pull rod, the first push-pull rods fixed on each first pressing plate sequentially penetrate through the other first pressing plates at the lower ends of the first pressing plates and are in sliding connection with the contact position of the first pressing plates, the bottom ends of each first push-pull rod penetrate through the first circular disc and are in sliding connection with the contact position of the first pressing plates, the bottom ends of each first electric telescopic rod are fixedly connected with the bottom of the first pressing plates, the first electric telescopic rods are fixedly arranged at the bottoms of the first push-pull rods, the first electric telescopic rods are fixedly arranged on the top surfaces of the first telescopic rods are fixedly connected with the first push-pull rods, the top surfaces of the first push-pull rods are fixedly arranged on the top surfaces of the first cylinder, the first push-pull plates are fixedly arranged on the top surfaces of the first pressing plates, the first push-pull plates are fixedly connected with the first push-pull plates, the first push plates are fixedly arranged on the first push plates, the first push plates are fixedly penetrate through the first top plates, the first push plates and pass through the first top plates and are fixedly connected with the first top plates, and pass through the first connecting plates and are fixedly arranged on the first top plates, and are fixedly arranged on the first top plate, and are respectively, the second motor is fixedly arranged on one side of the top surface of the second disc, a third gear is fixedly arranged on an output shaft of the second motor penetrating through the second disc, the output shaft of the second motor is rotationally connected with a contact part of the second disc, a third cylinder body is fixedly arranged on the bottom surface of the second disc, the axial lead of the third cylinder body is matched with that of the second disc, a second through groove for placing the third gear is formed on one side of the bottom end of the third cylinder body, a plurality of groups of third fixing blocks are uniformly fixed on the inner ring surface of the third cylinder body, each group of third fixing blocks consists of two fourth fixing blocks, a third shaft is fixedly connected between the two fourth fixing blocks of each group of third fixing blocks, a second sleeve is sleeved on the third shaft and rotationally connected with the third shaft, a second pressing plate is fixedly arranged on the outer ring surface of the second sleeve, a plurality of third balls are uniformly embedded and fixed on the other end of the second pressing plate, the contact part of the third balls and the second pressing plate is rotationally connected, a second arc-shaped rod is fixed on one side of the second pressing plate, the other end of the second arc-shaped rod penetrates through the inner wall of a third cylinder body and is fixedly provided with a third limit ring, the contact part of the second arc-shaped rod and the third cylinder body is slidingly connected, a fifth spring is sleeved on the second arc-shaped rod between the second pressing plate and the inner wall of the third cylinder body, a second toothed ring is sleeved in the third cylinder body and meshed with a third gear, the top surface of the second toothed ring is attached to the bottom surface of a second disc, a second dovetail ring is fixed on the top surface of the second disc, the second dovetail ring is embedded on the bottom surface of the second disc and is rotationally connected with the contact part of the second disc, a fourth cylinder body is fixed on the bottom surface of the second toothed ring, the fourth cylinder body is arranged in the third cylinder body, a plurality of second mounting grooves are uniformly formed in the outer ring surface of the fourth cylinder body, a second arc-shaped mounting plate is arranged in each second mounting groove, the second arc-shaped mounting plates are in sliding connection with the second mounting grooves, the number of the plurality of second arc-shaped mounting plates is equal to that of the plurality of first arc-shaped mounting plates, each second arc-shaped mounting plate is relatively arranged with the corresponding first arc-shaped mounting plate, a second bearing is fixedly inlaid at the center of the bottom surface of the second arc-shaped mounting plate, a fourth shaft is fixedly sleeved in the inner ring of the second bearing, a fourth gear is fixed at the bottom end of the fourth shaft, a second conical block is fixedly arranged at the center of the bottom surface of the fourth gear, the diameter of the outer arc-shaped mounting plate is matched with the diameter of the outer ring surface of the fourth cylinder body, the diameter of the inner arc-shaped mounting plate is also matched with the diameter of the outer ring surface of the fourth cylinder body, a plurality of fourth balls are uniformly inlaid on the inner arc-shaped mounting plate, the fourth balls are fixedly inlaid on the inner arc-shaped mounting plate, the fourth balls are in contact with the inner side of the second push plate, the second push plate is in sliding connection with the inner side of the second magnetic push plate, the second magnetic push plate is in contact with the inner side of the second arc-shaped mounting plate, the inner side of the second magnetic push plate is fixedly arranged at the inner side of the second arc-shaped mounting plate, and the magnetic push plate is in contact with the inner side of the second arc-shaped magnetic push plate, a first trapezoid block is fixed on the side wall of each second push plate, the other end of each first trapezoid block penetrates through the inner wall of the corresponding second mounting groove and is in sliding connection with the contact part of the fourth cylinder body, second guide rods are symmetrically arranged at the two ends of each first trapezoid block, one end of each second guide rod is fixedly connected with the second push plate, the other end of each second guide rod penetrates through the inner wall of the second mounting groove and is fixedly provided with a fourth limit ring, the contact part of each second guide rod and the fourth cylinder body is in sliding connection, a seventh spring is sleeved on the second guide rod between the fourth limit ring and the inner ring surface of the fourth cylinder body, a plurality of first trapezoid blocks are arranged at equal intervals from top to bottom, one side of an inclined plane of each first trapezoid block is attached with a second pressure plate, the outer ring surface of the second pressure plate is in a conical shape, a plurality of sixth balls are uniformly embedded on the outer ring surface of the second pressure plate, the sixth ball is rotationally connected with the contact part of the second pressing plates, the second pressing plates are arranged at equal intervals from top to bottom, the axial leads of the second pressing plates are matched, the axial leads of the second pressing plates vertically penetrate through second vertical rods, the bottom ends of the second vertical rods are fixedly connected with the center of the bottom surface of the second disc, the contact part of the second pressing plates and the second vertical rods is slidingly connected, the bottom ends of the second vertical rods are fixedly provided with second fluted discs, the second fluted discs are positioned at the lower end of the fourth cylinder body, the second fluted discs are meshed with fourth gears, the top surface of each second pressing plate is fixedly provided with a second push-pull rod, the second push-pull rods fixed on each second pressing plate sequentially penetrate through the other second pressing plates at the upper end of each second pressing plate and are slidingly connected with the contact part of each second push-pull rod, the top end of each second push-pull rod penetrates through the second disc and is slidingly connected with the contact part of each second push-pull rod, and each second push-pull rod is provided with a second electric telescopic rod at the right upper end, the telescopic end of each second electric telescopic rod is fixedly connected with the top of a second push-pull rod at the right lower end of each second electric telescopic rod, each second electric telescopic rod is fixedly arranged on the bottom surface of a fixed plate, a second vertical plate is fixedly arranged on one side of the bottom surface of each second disc, two second transverse rods transversely penetrate through each second vertical plate, the contact parts of the second transverse rods and the second vertical plates are slidably connected, the two second transverse rods are fixedly provided with the same second plugboard towards one end of a third cylinder, the other ends of the second plugboards penetrate through the outer wall of the third cylinder and extend into the outer ring surface of the third cylinder to be attached to the outer ring surface of the fourth cylinder, the second plugboards are slidably connected with the contact parts of the third cylinder, the other ends of the two second transverse rods are fixedly provided with the same second connecting plates, eighth springs are sleeved on the second transverse rods between the second vertical plates and the second vertical plates, a third connecting plate is fixedly connected between the bottom ends of the second connecting plates and the top ends of the second vertical plates, a U-shaped handle is fixedly arranged on the third side wall, the second connecting plates are fixedly connected with a polishing center shaft, a plurality of polishing shafts are fixedly connected with a polishing shaft sleeve between the polishing shaft and the polishing shaft, and the polishing shaft sleeve, and the polishing shaft is fixedly connected with the polishing shaft sleeve, and the polishing shaft sleeve.

Preferably, the first motor, the second motor, the first electric telescopic rod and the second electric telescopic rod are respectively and electrically connected with an external power supply through wires.

Preferably, the first electric telescopic rod and the second electric telescopic rod are electric push rods of LX700 model.

Preferably, the axial lines of the first disc, the second disc, the first cylinder, the third cylinder, the first toothed ring, the second cylinder, the fourth cylinder, the first pressure plate and the second pressure plate are all consistent.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, through the arrangement of the second cylinder body, the fourth cylinder body, the first arc-shaped mounting plate and the second arc-shaped mounting plate, a corresponding group of first electric telescopic rods and second electric telescopic rods are controlled, and the corresponding group of first arc-shaped mounting plates and second arc-shaped mounting plates are pushed out of the first mounting grooves and the second mounting grooves, so that the first arc-shaped mounting plates and the second arc-shaped mounting plates can be separated from the rotating second cylinder body and the rotating fourth cylinder body independently, and at the moment, the replacement and mounting work of the steel pipes between the group of first arc-shaped mounting plates and the second arc-shaped mounting plates can be realized under the condition that the polishing and rust removal work of the steel pipes between the remaining groups of first arc-shaped mounting plates and the second arc-shaped mounting plates is not influenced, and the normal operation of the device is not required to be stopped in the replacement process of the steel pipes, so that the polishing and rust removal work efficiency of the device on the steel pipes is effectively improved.

Drawings

FIG. 1 is a block diagram of the structure of the present invention;

FIG. 2 is an enlarged partial view of A of the structure of FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of part B of FIG. 1 of the structure of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 1 illustrating the structure of the present invention;

FIG. 5 is a sectional view B-B of the structure of FIG. 1 according to the present invention.

In the figure: base 1, strut 2, fixed plate 3, connecting rod 4, first connecting rod 4-1, first disk 5, second disk 5-1, first motor 6, second motor 6-1, first gear 7, third gear 7-1, first cylinder 8, third cylinder 8-1, first fixed block 9, second fixed block 9-1, third fixed block 9-2, fourth fixed block 9-3, first shaft 10, third shaft 10-1, first sleeve 11, second sleeve 11-1, first platen 12, second platen 12-1, first ball 13, third ball 13-1, first arc rod 14, second arc rod 14-1, first limit ring 15, third limit ring 15-1, first spring 16, fifth spring 16-1, first toothed ring 17, second toothed ring 17-1 the first dovetail ring 18, the second dovetail ring 18-1, the second cylinder 19, the fourth cylinder 19-1, the first mounting groove 20, the second mounting groove 20-1, the first arc mounting plate 21, the second arc mounting plate 21-1, the second ball 22, the fourth ball 22-1, the first push plate 23, the second push plate 23-1, the trapezoid block 24, the first trapezoid block 24-1, the first pressure plate 25, the second pressure plate 25-1, the first vertical rod 26, the second vertical rod 26-1, the first fluted disc 27, the second fluted disc 27-1, the first magnet block 28, the second magnet block 28-1, the first guide rod 29-1, the second limit ring 30, the fourth limit ring 30-1, the second spring, the seventh spring 31-1, the first rod 32, the second push-pull rod 32-1, the second push-pull rod 31-pull rod, the first electric telescopic rod 33, the second electric telescopic rod 33-1, the first bearing 34, the second shaft 34-1, the second bearing 34-2, the fourth shaft 34-3, the second gear 35, the fourth gear 35-1, the first spring cylinder 36, the first slider 37, the third spring 38, the first slide bar 39, the first tapered block 40, the second tapered block 40-1, the first positioning cylinder 41, the first lock bolt 42, the first compression bar 43, the first grip 44, the first sliding groove 45, the first riser 46, the second riser 46-1, the first cross bar 47, the second cross bar 47-1, the first insert plate 48, the second insert plate 48-1, the first connecting plate 49, the second connecting plate 49-1, the fourth spring 50, the eighth spring 50-1, the third connecting plate 51, the U-shaped handle 52, the center shaft 53, the grinding cylinder 54, the second connecting rod 55, the fifth ball 56, the sixth ball 56-1, the first through groove 57, the second through groove 57-1.

Detailed Description

The invention is described in further detail below with reference to the attached drawings and detailed description:

as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, a steel pipe high-efficiency grinding and rust removing device for construction comprises a base 1, supporting rods 2 are respectively fixed at four corners of the top surface of the base 1, the same fixing plate 3 is fixed at the top ends of the four supporting rods 2, a first disc 5 is fixed on the top surface of the base 1 through a plurality of connecting rods 4, a first motor 6 is fixedly arranged at one side of the bottom surface of the first disc 5, an output shaft of the first motor 6 penetrates through the first disc 5 to be fixed with a first gear 7, an output shaft of the first motor 6 is rotationally connected with a contact part of the first disc 5, a first cylinder 8 is fixed on the top surface of the first disc 5, a shaft axis of the first cylinder 8 is matched with a shaft axis of the first disc 5, a first through groove 57 for placing the first gear 7 is arranged at one side of the bottom end of the first cylinder 8, a plurality of groups of first fixing blocks 9 are uniformly fixed on the inner ring surface of the first cylinder 8, each group of first fixing blocks 9 consists of two second fixing blocks 9-1, a first shaft 10 is fixedly connected between the two second fixing blocks 9-1 of each group of first fixing blocks 9, a first sleeve 11 is sleeved on the first shaft 10, the first sleeve 11 is rotationally connected with the first shaft 10, a first pressing plate 12 is fixed on the outer ring surface of the first sleeve 11, a plurality of first balls 13 are uniformly embedded and fixed on the other end of the first pressing plate 12, the contact part of the first balls 13 and the first pressing plate 12 is rotationally connected, a first arc-shaped rod 14 is fixed on one side of the first pressing plate 12, the other end of the first arc-shaped rod 14 penetrates through the inner wall of the first cylinder 8 and is fixedly provided with a first limit ring 15, the contact part of the first arc-shaped rod 14 and the first cylinder 8 is slidingly connected, the first spring 16 is sleeved on the first arc-shaped rod 14 between the first pressing plate 12 and the inner wall of the first barrel 8, the first barrel 8 is internally sleeved with the first toothed ring 17, the first toothed ring 17 is meshed with the first gear 7, the bottom surface of the first toothed ring 17 is attached to the top surface of the first disc 5, the bottom surface of the first disc 5 is fixedly provided with the first dovetail ring 18, the first dovetail ring 18 is inlaid on the top surface of the first disc 5 and is rotationally connected with the contact part of the first dovetail ring 18, the top surface of the first toothed ring 17 is fixedly provided with the second barrel 19, the second barrel 19 is arranged in the first barrel 8, a plurality of first mounting grooves 20 are uniformly formed on the outer ring surface of the second barrel 19, a first arc-shaped mounting plate 21 is arranged in each first mounting groove 20, the first arc-shaped mounting plate 21 is slidably connected with the first mounting groove 20, the first bearing 34 is fixedly inlaid in the center of the top surface of the first arc-shaped mounting plate 21, the second shaft 34-1 is fixedly sleeved in the inner ring of the first bearing 34, the top end of the second shaft 34-1 is fixedly provided with a second gear 35, a first spring cylinder 36 is fixedly arranged in the center of the top surface of the second gear 35, a first sliding block 37 is arranged in the first spring cylinder 36 in a sliding manner, a third spring 38 is fixedly arranged between the bottom end of the first sliding block 37 and the inner bottom end of the first spring cylinder 36, the third spring 38 is arranged in the first spring cylinder 36, the top end of the first sliding block 37 is fixedly provided with a first sliding rod 39, the top end of the first sliding rod 39 extends out of the first spring cylinder 36 and is fixedly provided with a first conical block 40, a first positioning cylinder 41 is sleeved on the first sliding rod 39, the contact part of the first sliding rod 39 and the first positioning cylinder 41 is in sliding connection, the bottom end of the first positioning cylinder 41 is fixedly connected with the top end of the first spring cylinder 36, the first locking bolt 42 is screwed on the side wall of the first positioning cylinder 41, a first compression bar 43 is fixed on one side of the first sliding block 37, the first compression bar 43 penetrates through the side wall of the first spring cylinder 36 and is fixed with a first handle 44, a first sliding groove 45 for sliding the first compression bar 43 is arranged on the side wall of the first spring cylinder 36, the diameter of the outer arc surface of the first arc-shaped mounting plate 21 is matched with the diameter of the outer ring surface of the second cylinder 19, the diameter of the inner arc surface of the first arc-shaped mounting plate 21 is also matched with the diameter of the outer ring surface of the second cylinder 19, the axial lead of the outer arc-shaped mounting plate 21 is matched with the axial lead of the second cylinder 19, a plurality of second balls 22 are uniformly embedded on the inner arc-shaped mounting plate 21, the contact part of the second balls 22 and the first arc-shaped mounting plate 21 is rotationally connected, a first push plate 23 is arranged between the inner arc-shaped mounting plate 21 and the inner wall of the first mounting groove 20, the first push plate 23 is arranged in the first mounting groove 20, one side of the first push plate 23 facing the inner cambered surface of the first arc-shaped mounting plate 21 is an arc surface, the diameter of the arc surface of the first push plate 23 is matched with the diameter of the outer ring surface of the second cylinder 19, a plurality of first magnet blocks 28 transversely penetrate through the first push plate 23, the contact part of the first magnet blocks 28 and the first push plate 23 is in sliding connection, one end of each first magnet block 28 is fixedly connected with the inner wall of the first mounting groove 20, the other end of each first magnet block 28 is attached to the inner cambered surface of the first arc-shaped mounting plate 21, a trapezoid block 24 is fixed on the side wall of each first push plate 23, the other end of each trapezoid block 24 penetrates through the inner wall of the corresponding first mounting groove 20 and is in sliding connection with the contact part of the second cylinder 19, first guide rods 29 are symmetrically arranged at the two ends of each trapezoid block 24, one end of the first guide rod 29 is fixedly connected with the first push plate 23, the other end of the first guide rod 29 penetrates through the inner wall of the first mounting groove 20 and is fixedly provided with a second limit ring 30, the contact part of the first guide rod 29 and the second cylinder 19 is in sliding connection, a second spring 31 is sleeved on the first guide rod 29 between the second limit ring 30 and the inner ring surface of the second cylinder 19, a plurality of trapezoid blocks 24 are arranged at equal intervals from top to bottom, one side of the inclined plane of each trapezoid block 24 is adhered with a first pressing plate 25, the outer ring of the first pressing plate 25 is cone-shaped, a plurality of fifth balls 56 are uniformly embedded on the outer ring surface of the first pressing plate 25, the contact part of the fifth balls 56 and the first pressing plate 25 is in rotary connection, a plurality of first pressing plates 25 are arranged at equal intervals from top to bottom, the axes of the first pressing plates 25 are matched, the axes of the first pressing plates 25 are vertically penetrated and provided with first vertical rods 26, the bottom end of the first vertical rod 26 is fixedly connected with the center of the top surface of the first disc 5, the contact part of the first pressing plate 25 and the first vertical rod 26 is in sliding connection, the top end of the first vertical rod 26 is fixedly provided with a first fluted disc 27, the first fluted disc 27 is positioned at the upper end of the second cylinder 19, the first fluted disc 27 is meshed with a second gear 35, the bottom surface of each first pressing plate 25 is fixedly provided with a first push-pull rod 32, the first push-pull rods 32 fixed on each first pressing plate 25 sequentially penetrate through the rest of the first pressing plates 25 at the lower end and are in sliding connection with the contact part, the bottom end of each first push-pull rod 32 penetrates through the first disc 5 and is in sliding connection with the contact part, the right lower end of each first push-pull rod 32 is provided with a first electric telescopic rod 33, the telescopic end of each first electric telescopic rod 33 is fixedly connected with the bottom of one first push-pull rod 32 at the right upper end, the first electric telescopic rod 33 is fixedly arranged on the top surface of the base 1, one side of the top surface of the first disc 5 is fixedly provided with a first vertical plate 46, two first cross rods 47 transversely penetrate through the first vertical plate 46, the contact part of the first cross rods 47 and the first vertical plate 46 is in sliding connection, one end of each first cross rod 47 faces the first cylinder 8, the other end of each first cross rod 48 penetrates through the outer wall of the first cylinder 8 and stretches into the first cross rod to be attached to the outer ring surface of the second cylinder 19, the contact part of each first cross rod 48 and the first cylinder 8 is in sliding connection, the other end of each first cross rod 47 is fixedly provided with the same first connecting plate 49, a fourth spring 50 is sleeved on the first cross rod 47 between each first vertical plate 46 and each first cross rod 48, a second disc 5-1 is fixed on the bottom surface of the fixed plate 3 through a plurality of first connecting rods 4-1, a second motor 6-1 is fixedly arranged on one side of the top surface of the second disc 5-1, a third gear 7-1 is fixed on an output shaft of the second motor 6-1 penetrating through the second disc 5-1, the output shaft of the second motor 6-1 is rotationally connected with the contact part of the second disc 5-1, a third cylinder 8-1 is fixed on the bottom surface of the second disc 5-1, the axial lead of the third cylinder 8-1 is matched with the axial lead of the second disc 5-1, a second through groove 57-1 for placing the third gear 7-1 is formed on one side of the bottom end of the third cylinder 8-1, a plurality of groups of third fixed blocks 9-2 are uniformly fixed on the inner ring surface of the third cylinder 8-1, each group of third fixed blocks 9-2 consists of two fourth fixed blocks 9-3, a third shaft 10-1 is fixedly connected between two fourth fixing blocks 9-3 of each group of third fixing blocks 9-2, a second sleeve 11-1 is sleeved on the third shaft 10-1, the second sleeve 11-1 is rotationally connected with the third shaft 10-1, a second pressing plate 12-1 is fixed on the outer ring surface of the second sleeve 11-1, a plurality of third balls 13-1 are uniformly embedded and fixed on the other end of the second pressing plate 12-1, the contact part of the third balls 13-1 and the second pressing plate 12-1 is rotationally connected, a second arc-shaped rod 14-1 is fixed on one side of the second pressing plate 12-1, the other end of the second arc-shaped rod 14-1 penetrates through the inner wall of the third cylinder 8-1 and is fixedly provided with a third limit ring 15-1, the contact part of the second arc-shaped rod 14-1 and the third cylinder 8-1 is in sliding connection, a fifth spring 16-1 is sleeved on the second arc-shaped rod 14-1 between the second pressing plate 12-1 and the inner wall of the third cylinder 8-1, a second toothed ring 17-1 is sleeved in the third cylinder 8-1, the second toothed ring 17-1 is meshed with the third gear 7-1, the top surface of the second toothed ring 17-1 is attached to the bottom surface of the second disc 5-1, a second dovetail ring 18-1 is fixed on the top surface of the second disc 5-1, the second dovetail ring 18-1 is inlaid on the bottom surface of the second disc 5-1 and is in rotary connection with the contact part of the second dovetail ring, a fourth cylinder 19-1 is fixed on the bottom surface of the second toothed ring 17-1, the fourth cylinder 19-1 is arranged in the third cylinder 8-1, a plurality of second mounting grooves 20-1 are uniformly formed on the outer ring surface of the fourth cylinder 19-1, a second arc mounting plate 21-1 is arranged in each second mounting groove 20-1, the second arc mounting plates 21-1 are in sliding connection with the second mounting grooves 20-1, the number of the second arc mounting plates 21-1 is equal to that of the first arc mounting plates 21, each second arc mounting plate 21-1 is opposite to that of the corresponding first arc mounting plate 21, a second bearing 34-2 is fixedly embedded in the center of the bottom surface of the second arc mounting plate 21-1, a fourth shaft 34-3 is fixedly sleeved in the inner ring of the second bearing 34-2, a fourth gear 35-1 is fixedly arranged at the bottom end of the fourth shaft 34-3, a second conical block 40-1 is fixedly arranged at the center of the bottom surface of the fourth gear 35-1, the diameter of the outer arc surface of the second arc-shaped mounting plate 21-1 is matched with the diameter of the outer ring surface of the fourth cylinder 19-1, the diameter of the inner arc surface of the second arc-shaped mounting plate 21-1 is also matched with the diameter of the outer ring surface of the fourth cylinder 19-1, the axial lead of the outer arc surface of the second arc-shaped mounting plate 21-1 is matched with the axial lead of the fourth cylinder 19-1, a plurality of fourth balls 22-1 are uniformly embedded on the inner arc surface of the second arc-shaped mounting plate 21-1, the contact part of the fourth balls 22-1 and the second arc-shaped mounting plate 21-1 is rotationally connected, a second push plate 23-1 is arranged between the inner arc surface of the second arc-shaped mounting plate 21-1 and the inner wall of the second mounting groove 20-1, the second push plate 23-1 is arranged in the second mounting groove 20-1, one side of the second push plate 23-1 facing the inner cambered surface of the second arc mounting plate 21-1 is an arc surface, the diameter of the arc surface of the second push plate 23-1 is matched with the diameter of the outer ring surface of the fourth cylinder 19-1, a plurality of second magnet blocks 28-1 transversely penetrate through the second push plate 23-1, the contact part of the second magnet blocks 28-1 and the second push plate 23-1 is in sliding connection, one end of each second magnet block 28-1 is fixedly connected with the inner wall of the second mounting groove 20-1, the other end of each second magnet block 28-1 is attached to the inner cambered surface of the second arc mounting plate 21-1, a first trapezoid block 24-1 is fixedly arranged on the side wall of each second push plate 23-1, the other end of each first trapezoid block 24-1 penetrates through the inner wall of the corresponding second installation groove 20-1 and is in sliding connection with the contact part of the fourth cylinder 19-1, second guide rods 29-1 are symmetrically arranged at the two ends of each first trapezoid block 24-1, one end of each second guide rod 29-1 is fixedly connected with the second push plate 23-1, the other end of each second guide rod 29-1 penetrates through the inner wall of the corresponding second installation groove 20-1 and is fixedly provided with a fourth limit ring 30-1, the contact part of each second guide rod 29-1 and the fourth cylinder 19-1 is in sliding connection, a seventh spring 31-1 is sleeved on each second guide rod 29-1 between the fourth limit ring 30-1 and the inner ring surface of the fourth cylinder 19-1, a plurality of first trapezoid blocks 24-1 are arranged at equal intervals from top to bottom, one side of the inclined plane of each first trapezoid block 24-1 is adhered with a second pressing plate 25-1, the outer ring of the second pressing plate 25-1 is in a cone shape, a plurality of sixth balls 56-1 are uniformly embedded on the outer ring of the second pressing plate 25-1, the contact parts of the sixth balls 56-1 and the second pressing plate 25-1 are rotationally connected, a plurality of second pressing plates 25-1 are arranged at equal intervals from top to bottom, the axial lead of the plurality of second pressing plates 25-1 is matched, a second vertical rod 26-1 vertically penetrates through the axial lead of the plurality of second pressing plates 25-1, the bottom end of the second vertical rod 26-1 is fixedly connected with the center of the bottom surface of the second circular plate 5-1, the contact parts of the second pressing plates 25-1 and the second vertical rod 26-1 are in sliding connection, the bottom end of the second vertical rod 26-1 is fixedly provided with a second fluted disc 27-1, the second fluted disc 27-1 is positioned at the lower end of the fourth cylinder 19-1, the second fluted disc 27-1 is meshed with the fourth gear 35-1, the top surface of each second pressure disc 25-1 is fixedly provided with a second push-pull rod 32-1, the second push-pull rods 32-1 fixed on each second pressure disc 25-1 sequentially penetrate through the other second pressure discs 25-1 at the upper end and are in sliding connection with the contact parts of the second pressure discs, the top end of each second push-pull rod 32-1 penetrates through the second disc 5-1 and is in sliding connection with the contact parts of the second push-pull rods, the right upper end of each second push-pull rod 32-1 is provided with a second electric telescopic rod 33-1, the telescopic end of each second electric telescopic rod 33-1 is fixedly connected with the top of one second push-pull rod 32-1 at the right lower end of the second electric telescopic rod, the second electric telescopic rod 33-1 is fixedly arranged on the bottom surface of the fixed plate 3, one side of the bottom surface of the second disc 5-1 is fixedly provided with a second vertical plate 46-1, two second cross rods 47-1 transversely penetrate through the second vertical plate 46-1, the contact part of the second cross rods 47-1 and the second vertical plate 46-1 is in sliding connection, one end of the two second cross rods 47-1, facing the third cylinder 8-1, is fixedly provided with the same second plugboard 48-1, the other end of the second plugboard 48-1 penetrates through the outer wall of the third cylinder 8-1 and stretches into the outer ring surface of the fourth cylinder 19-1 to be attached to the outer ring surface of the fourth cylinder 8-1, the contact part of the second plugboard 48-1 and the third cylinder 8-1 is in sliding connection, the other ends of the two second cross rods 47-1 are fixedly provided with the same second connecting board 49-1, the second cross rod 47-1 between the second vertical plate 46-1 and the second plugboard 48-1 is sleeved with an eighth spring 50-1, a third connecting plate 51 is fixedly connected between the bottom end of the second connecting plate 49-1 and the top end of the first connecting plate 49, a U-shaped handle 52 is fixedly installed on the side wall of the third connecting plate 51, a central shaft 53 is fixedly connected between the first fluted disc 27 and the second fluted disc 27-1, the axis of the central shaft 53 is matched with the axes of the first fluted disc 27 and the second fluted disc 27-1, a polishing cylinder 54 is sleeved on the central shaft 53, the inner wall of the polishing cylinder 54 is fixedly connected with the central shaft 53 through a plurality of second connecting rods 55, and a sand layer is fixedly arranged on the outer ring surface of the polishing cylinder 54.

The first motor 6, the second motor 6-1, the first electric telescopic rod 33 and the second electric telescopic rod 33-1 are respectively and electrically connected with an external power supply through wires.

The first electric telescopic rod 33 and the second electric telescopic rod 33-1 are electric push rods of LX700 model.

The axial lines of the first disc 5, the second disc 5-1, the first cylinder 8, the third cylinder 8-1, the first toothed ring 17, the second toothed ring 17-1, the second cylinder 19, the fourth cylinder 19-1, the first pressure plate 25 and the second pressure plate 25-1 are all consistent.

Working principle: when the invention is used, as shown in figure 1, the first motor 6 and the second motor 6-1 are started firstly, at this time, the first motor 6 and the second motor 6-1 drive the first toothed ring 17 and the second toothed ring 17-1 to rotate in the same direction through the first gear 7 and the third gear 7-1 respectively, the output shafts of the first motor 6 and the second motor 6-1 synchronously rotate, the rotation speeds of the first toothed ring 17 and the second toothed ring 17-1 are consistent, when the first toothed ring 17 and the second toothed ring 17-1 rotate, the second cylinder 19 and the fourth cylinder 19-1 are respectively driven to synchronously rotate, thus after the second cylinder 19 and the fourth cylinder 19-1 start to rotate, a group of first electric telescopic rod 33 and second electric telescopic rod 33-1 which are correspondingly arranged are controlled, the telescopic ends of the two first electric telescopic rods 33 and the second electric telescopic rod 33-1 are retracted, the telescopic ends of the first electric telescopic rod 33 and the second electric telescopic rod 33-1 are synchronously operated, when the telescopic ends of the first electric telescopic rod 33 and the second electric telescopic rod 33-1 are retracted, the first pressure plate 25 and the second pressure plate 25-1 are synchronously driven to move in opposite directions, when a corresponding group of the first pressure plate 25 and the second pressure plate 25-1 are moved, inclined surfaces of the trapezoid block 24 and the first trapezoid block 24-1 attached to the side ends of the corresponding group of the first pressure plate 25 and the second pressure plate are respectively pressed, so that the trapezoid block 24 and the first trapezoid block 24-1 push the first arc-shaped mounting plate 21 and the second arc-shaped mounting plate 21-1 through the first push plate 23 and the second push plate 23-1 respectively, when the telescopic ends of the first electric telescopic rod 33 and the second electric telescopic rod 33-1 are retracted to the maximum, the first and second arc-shaped mounting plates 21 and 21-1 are pushed out from the corresponding first and second mounting grooves 20 and 20-1, respectively, and the arc surfaces of the first and second push plates 23 and 23-1 are respectively aligned with the outer circumferential surfaces of the second and fourth cylinders 19 and 19-1, thereby filling the empty portions of the first and second mounting grooves 20 and 20-1 on the outer circumferential surfaces of the first and third cylinders 8 and 8-1, so that the outer circumferential surfaces of the first and third cylinders 8 and 8-1 remain intact, due to the arrangement of the first and second pressure plates 12 and 12-1, the first and second pressure plates 12 and 12-1 are provided with one ends of the first and third balls 13-1 under the action of the first and fifth springs 16 and 16-1, respectively, to give a pressing action to the outer circumferential surfaces of the second and fourth cylinders 19-1, so that under the action of the plurality of first and second pressure plates 12-1, the first and 20-21 and the second magnet blocks 20-1 are always arranged in the first and second mounting grooves 20-1, and the first and second magnetic blocks 21-28 are firmly attached to the first and 28-1, and the first and second magnetic blocks 21-21 are firmly attached to the first and 28-1, and the first and second and 21-1, and the first and 28-and the first and second arc-shaped mounting plates 21-1 are firmly attached to the first and 21-and 28-and the first and 21-and the second arc-shaped mounting plates are fixed, the first arc-shaped mounting plate 21 and the second arc-shaped mounting plate 21-1 are more stably fixed in the first mounting groove 20 and the second mounting groove 20-1, and the first arc-shaped mounting plate 21 and the second arc-shaped mounting plate 21-1 pushed out from the first mounting groove 20 and the second mounting groove 20-1 are tightly attached to the outer ring surfaces of the first cylinder 8 and the third cylinder 8-1 on one side of the intrados of the first arc-shaped mounting plate 21 and the second arc-shaped mounting plate 21-1 under the thrust action of the first pressing plate 12 and the second pressing plate 12-1. At this time, with the rotation of the first cylinder 8 and the third cylinder 8-1, the first arc-shaped mounting plate 21 and the second arc-shaped mounting plate 21-1 pushed out from the inside of the first mounting groove 20 and the second mounting groove 20-1 move synchronously with the rotation of the first cylinder 8 and the third cylinder 8-1 until the first arc-shaped mounting plate 21 and the second arc-shaped mounting plate 21-1 respectively bear against the first inserting plate 48 and the second inserting plate 48-1, the first arc-shaped mounting plate 21 and the second arc-shaped mounting plate 21-1 do not move synchronously with the rotation of the first cylinder 8 and the third cylinder 8-1 any more, a static state is maintained, at this time, the first grip 44 on the first arc-shaped mounting plate 21 is pressed downwards by a worker in the static state, so that the first tapered block 40 moves downwards, the spacing between the corresponding first and second tapered blocks 40 and 40-1 on the first and second arc-shaped mounting plates 21 and 21-1 is enlarged in the rest state, at this time, the steel pipe to be derusted is placed between the corresponding first and second tapered blocks 40 and 40-1 so that the ports at both ends of the steel pipe are aligned with the first and second tapered blocks 40 and 40-1, respectively, at this time, the first grip 44 is released, so that the first tapered block 40 moves upward under the action of the third spring 38, and then the steel pipe is clamped and fixed between the corresponding first and second tapered blocks 40 and 40-1, and then the first locking bolt 42 is tightened, the first slide rod 39 is fixed in the first positioning cylinder 41, preventing the first tapered block 40 from moving, so that after the steel pipe to be derusted is fixed between the corresponding first and second tapered blocks 40-1, the corresponding first electric telescopic rod 33 and the corresponding second electric telescopic rod 33-1 are controlled again, so that the telescopic ends of the first electric telescopic rod 33 and the second electric telescopic rod 33-1 are synchronously stretched, at the moment, the first pressure plate 25 and the second pressure plate 25-1 move along the stretching opposite directions of the telescopic ends of the first electric telescopic rod 33 and the second electric telescopic rod 33-1, under the action of the second spring 31 and the seventh spring 31-1, the inclined surfaces of the corresponding first trapezoid block 24 and the corresponding first trapezoid block 24-1 are respectively attached to the first pressure plate 25 and the second pressure plate 25-1, the first push plate 23 and the second push plate 23-1 are respectively retracted into the first mounting groove 20-1 and the second mounting groove 20-1, so that the concave parts of the first mounting groove 20 and the second mounting groove 20-1 are leaked out on the outer ring surfaces of the first barrel 8 and the third barrel 8-1, when the concave parts are rotated to the first plugboard 48 and the second plugboard 48-1 along the first barrel 8-1, the second plugboard 48-1 are completely embedded into the first mounting groove 20-1 and the second mounting groove 20-1 when the first plugboard 48-1 is completely embedded into the first mounting groove 20-1 and the second mounting groove 20-1, the first installation groove 20-1 is completely embedded into the first mounting groove 20-1 and the second mounting groove 20-1, and the second installation groove 20-1 is completely embedded into the first mounting groove 1, and the second mounting groove 20-1, and the second installation groove 20-1 is completely and the first arc-embedded into the first mounting groove 1, respectively, the outer circumferential surfaces of the first and second arc-shaped mounting plates 21 and 21-1 are aligned with the outer circumferential surfaces of the first and third cylinders 8 and 8-1, respectively, and a corresponding set of steel pipes fixed between the first and second tapered blocks 40 and 40-1 is abutted against the outer circumferential surfaces of the grinding cylinder 54, and at this time, the second and fourth gears 35 and 35-1 on the first and second arc-shaped mounting plates 21 and 21-1 are engaged with the first and second toothed plates 27 and 27-1, respectively, so that the second and fourth gears 35 and 35-1 on the first and second arc-shaped mounting plates 21 and 21-1 are engaged with the first and second toothed plates 27 and 27-1, respectively, to be rotated synchronously with the rotation of the first and third cylinders 8 and 8-1, when a corresponding group of second gears 35 and fourth gears 35-1 rotate, the steel pipe is synchronously driven to rotate, the steel pipe is rubbed with a frosted layer on the outer ring surface of the polishing cylinder 54 when rotating, the purpose of polishing and derusting rust on the outer ring surface of the steel pipe is realized, after the rust on the steel pipe is polished, the corresponding group of first electric telescopic rods 33 and second electric telescopic rods 33-1 are controlled again, the telescopic ends of the two first electric telescopic rods 33 and the second electric telescopic rods 33-1 are retracted, the first arc-shaped mounting plate 21 and the second arc-shaped mounting plate 21-1 extend out of the first mounting groove 20 and the second mounting groove 20-1 again, so that the first arc-shaped mounting plate 21 and the second arc-shaped mounting plate 21-1 are intercepted to the positions of the first plugboard 48 and the second plugboard 48-1 again, at this time, the steel pipes fixed between the corresponding first taper block 40 and the second taper block 40-1 are removed, the steel pipe to be polished and derusted is replaced, and the steel pipe is polished and derusted continuously according to the above, so that the aim of polishing the steel pipe efficiently is achieved effectively. It should be noted that when the first and second arc-shaped mounting plates 21 and 21-1 are initially pushed out from the first and second mounting grooves 20 and 20-1, a worker needs to pull the first and second insertion plates 48 and 48-1 through the U-shaped handles 52 in advance so that the first and second insertion plates 48 and 48-1 are away from the outer circumferential surfaces of the first and third cylinders 8 and 8-1, and thus, when the first and second arc-shaped mounting plates 21 and 21-1 are not completely pushed out, the first and second arc-shaped mounting plates 21 and 21-1 are not brought into contact with the first and second insertion plates 48 and 48-1, and further, the first and second arc-shaped mounting plates 21 and 21-1 which are not completely pushed out are effectively prevented from being brought into contact with the first and second insertion plates 48-1, and when the first and second arc-shaped mounting plates 21-1 are completely pushed out, the U-shaped handles 52 can be released, so that the first and second insertion plates 48-1 are automatically reset under the action of the fourth and eighth springs 50-1.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a steel pipe high-efficient rust cleaning device that polishes for construction, includes base (1), its characterized in that; the four corners of the top surface of the base (1) are respectively fixed with a supporting rod (2), the top ends of the four supporting rods (2) are fixed with the same fixed plate (3), the top surface of the base (1) is fixed with a first disc (5) through a plurality of connecting rods (4), one side of the bottom surface of the first disc (5) is fixedly provided with a first motor (6), an output shaft of the first motor (6) penetrates through the first disc (5) to be fixed with a first gear (7), the contact part of the output shaft of the first motor (6) and the first disc (5) is rotationally connected, the top surface of the first disc (5) is fixed with a first cylinder (8), the axial lead of the first cylinder (8) is matched with the axial lead of the first disc (5), one side of the bottom end of the first cylinder (8) is provided with a first through groove (57) for placing the first gear (7), the inner ring surface of the first cylinder (8) is uniformly fixed with a plurality of groups of first fixed blocks (9), each group of first fixed blocks (9) is respectively connected with two second fixed blocks (9-1) in a contacting way, each group of first fixed blocks (9) is rotationally connected with a first sleeve (10), the first sleeve (10) is connected with the first sleeve (10), the novel dovetail gear comprises a first barrel (8), a first pressing plate (12) is fixed on the outer ring surface of the first barrel (11), a plurality of first balls (13) are uniformly embedded and fixed on the other end of the first pressing plate (12), the first balls (13) are rotatably connected with the contact position of the first pressing plate (12), a first arc-shaped rod (14) is fixed on one side of the first pressing plate (12), the other end of the first arc-shaped rod (14) penetrates through the inner wall of the first barrel (8) and is fixedly provided with a first limit ring (15), the contact position of the first arc-shaped rod (14) and the first barrel (8) is slidably connected, a first spring (16) is sleeved on the first arc-shaped rod (14) between the first pressing plate (12) and the inner wall of the first barrel (8), a first toothed ring (17) is sleeved in the first barrel (8), the first toothed ring (17) is meshed with the first gear (7), the bottom surface of the first toothed ring (17) is attached to the top surface of the first barrel (5), a first dovetail ring (18) is fixed on the bottom surface of the first barrel (5), a first dovetail ring (19) is fixedly connected with the first barrel (19), and the first barrel (19) is rotatably arranged on the top surface of the first barrel, a plurality of first mounting grooves (20) are uniformly formed in the outer ring surface of the second cylinder body (19), a first arc-shaped mounting plate (21) is arranged in each first mounting groove (20), the first arc-shaped mounting plates (21) are in sliding connection with the first mounting grooves (20), a first bearing (34) is fixedly inlaid at the center of the top surface of each first arc-shaped mounting plate (21), a second shaft (34-1) is fixedly sleeved in the inner ring of each first bearing (34), a second gear (35) is fixedly arranged at the top end of each second shaft (34-1), a first spring cylinder (36) is fixedly arranged at the center of the top surface of each second gear (35), a first sliding block (37) is arranged in the first spring cylinder (36) in a sliding mode, a third spring (38) is fixedly arranged between the bottom end of each first sliding block (37) and the inner bottom end of the first spring cylinder (36), a first sliding rod (39) is fixedly sleeved at the top end of each first sliding rod (39), a first positioning block (39) is fixedly arranged at the top end of each first sliding rod (39), and the first positioning block (41) is fixedly connected with the first positioning sliding rod (41), the bottom end of the first positioning cylinder (41) is fixedly connected with the top end of the first spring cylinder (36), a first locking bolt (42) is screwed on the side wall of the first positioning cylinder (41), a first compression rod (43) is fixed on one side of the first sliding block (37), the first compression rod (43) penetrates through the side wall of the first spring cylinder (36) and is fixedly provided with a first handle (44), a first sliding groove (45) for sliding the first compression rod (43) is formed in the side wall of the first spring cylinder (36), the diameter of the outer arc surface of the first arc-shaped mounting plate (21) is matched with the diameter of the outer ring surface of the second cylinder (19), the diameter of the inner arc surface of the first arc-shaped mounting plate (21) is also matched with the diameter of the outer ring surface of the second cylinder (19), a plurality of second balls (22) are uniformly embedded on the inner arc surface of the first arc-shaped mounting plate (21), the second balls (22) are in contact with the first arc-shaped mounting plate (21) and are rotatably connected with the first arc-shaped mounting plate (21), the first arc-shaped mounting plate (23) is arranged between the first arc-shaped mounting plate (23) and the first arc-shaped mounting plate (23), the diameter of the arc surface of the first push plate (23) is matched with the diameter of the outer ring surface of the second cylinder body (19), a plurality of first magnet blocks (28) transversely penetrate through the first push plate (23), the contact positions of the first magnet blocks (28) and the first push plate (23) are in sliding connection, one end of each first magnet block (28) is fixedly connected with the inner wall of the first mounting groove (20), the other end of each first magnet block (28) is attached to the inner arc surface of the first arc mounting plate (21), a trapezoid block (24) is fixed on the side wall of each first push plate (23), the other end of each trapezoid block (24) penetrates through the inner wall of the corresponding first mounting groove (20) and is in sliding connection with the contact position of the second cylinder body (19), first guide rods (29) are symmetrically arranged at the two ends of each trapezoid block (24), one end of each first guide rod (29) is fixedly connected with the first push plate (23), the other end of each first guide rod (29) penetrates through the inner wall of the first mounting groove (20) and is fixedly provided with a second ring (30), the first guide rod (29) is connected with the second ring (19) in a sliding connection position of the second cylinder body (19) from top to bottom, a plurality of trapezoid blocks (31) are arranged between the first guide rods (19) and the second cylinder body (31), one side of the inclined plane of each trapezoid block (24) is attached with a first pressing plate (25), the outer ring of the first pressing plate (25) is in a conical shape, a plurality of fifth balls (56) are evenly embedded on the outer ring of the first pressing plate (25), the fifth balls (56) are rotationally connected with the contact position of the first pressing plate (25), a plurality of first pressing plates (25) are arranged at equal intervals from top to bottom, the axial lead of the plurality of first pressing plates (25) is matched, a first vertical rod (26) vertically penetrates through the axial lead of the plurality of first pressing plates (25), the bottom end of the first vertical rod (26) is fixedly connected with the center of the top surface of the first disc (5), the contact position of the first pressing plate (25) and the first vertical rod (26) is in sliding connection, the top end of the first vertical rod (26) is fixedly provided with a first fluted disc (27), the first fluted disc (27) is positioned at the upper end of the second cylinder (19), the first fluted disc (27) is meshed with a second fluted disc (35), the bottom surface of each first pressing plate (25) is fixedly provided with a first vertical rod (26) penetrating through the center of the first pressing plate (25) and is in sliding connection with the first rod (32) at the contact position of the first pressing plate (32) in turn, the right lower end of each first push-pull rod (32) is provided with a first electric telescopic rod (33), the telescopic end of each first electric telescopic rod (33) is fixedly connected with the bottom of one first push-pull rod (32) at the right upper end of each first electric telescopic rod, each first electric telescopic rod (33) is fixedly arranged on the top surface of the base (1), one side of the top surface of each first disc (5) is fixedly provided with a first vertical plate (46), two first transverse rods (47) transversely penetrate through the first vertical plates (46), the first transverse rods (47) are in sliding connection with the contact positions of the first vertical plates (46), one end of each first transverse rod (47) faces one end of each first cylinder (8) and is fixedly provided with the same first inserting plate (48), the other end of each first inserting plate (48) penetrates through the outer wall of each first cylinder (8) and stretches into the outer ring surface of each first inserting plate to be attached to the outer ring surface of each second cylinder (19), the other contact positions of each first inserting plate (48) and the first cylinders (8), the other ends of the two first transverse rods (47) are fixedly provided with the same first transverse rods (47), the first connecting plates (4) are fixedly connected with the first connecting plates (4) through the first connecting plates (4), a second motor (6-1) is fixedly arranged on one side of the top surface of the second disc (5-1), a third gear (7-1) is fixedly arranged on the output shaft of the second motor (6-1) penetrating through the second disc (5-1), the output shaft of the second motor (6-1) is rotationally connected with the contact part of the second disc (5-1), a third cylinder body (8-1) is fixedly arranged on the bottom surface of the second disc (5-1), the axial lead of the third cylinder body (8-1) is matched with the axial lead of the second disc (5-1), a second through groove (57-1) for placing the third gear (7-1) is formed in one side of the bottom end of the third cylinder body (8-1), a plurality of groups of third fixing blocks (9-2) are uniformly fixed on the inner ring surface of the third cylinder body (8-1), each group of third fixing blocks (9-2) is composed of two fourth fixing blocks (9-3), two fourth fixing blocks (9-3) of each group of third fixing blocks (9-2) are fixedly connected with a third sleeve (11-1) by a third sleeve (10-1), a second pressing plate (12-1) is fixed on the outer ring surface of the second sleeve (11-1), a plurality of third balls (13-1) are uniformly embedded and fixed on the other end of the second pressing plate (12-1), a contact part of the third balls (13-1) and the second pressing plate (12-1) is rotationally connected, a second arc-shaped rod (14-1) is fixed on one side of the second pressing plate (12-1), the other end of the second arc-shaped rod (14-1) penetrates through the inner wall of the third cylinder (8-1) and is fixedly provided with a third limit ring (15-1), a contact part of the second arc-shaped rod (14-1) and the third cylinder (8-1) is in sliding connection, a fifth spring (16-1) is sleeved on the second arc-shaped rod (14-1) between the second pressing plate (12-1) and the inner wall of the third cylinder (8-1), a second tooth ring (17-1) is arranged on the third cylinder (8-1), the second tooth ring (17-1) is meshed with the third tooth ring (7-1) and the second top surface (5-1) is meshed with the second top surface (5-1), the second dovetail ring (18-1) is embedded on the bottom surface of the second disk (5-1) and is rotationally connected with the contact part of the second dovetail ring, a fourth cylinder (19-1) is fixed on the bottom surface of the second tooth ring (17-1), the fourth cylinder (19-1) is arranged in the third cylinder (8-1), a plurality of second mounting grooves (20-1) are uniformly formed on the outer ring surface of the fourth cylinder (19-1), a second arc mounting plate (21-1) is arranged in each second mounting groove (20-1), the second arc mounting plate (21-1) is in sliding connection with the second mounting groove (20-1), the number of the second arc mounting plates (21-1) is equal to the number of the first arc mounting plates (21), each second arc mounting plate (21-1) is opposite to the corresponding first arc mounting plate (21), a second bearing (34-2) is fixedly embedded in the center of the bottom surface of the second arc mounting plate (21-1), a fourth conical gear (34-35) is fixedly arranged in the center of the second arc mounting plate (34-1), a fourth conical gear (35) is fixedly arranged at the bottom surface of the fourth gear (35), the diameter of the outer cambered surface of the second arc-shaped mounting plate (21-1) is matched with the diameter of the outer ring surface of the fourth cylinder body (19-1), the diameter of the inner cambered surface of the second arc-shaped mounting plate (21-1) is also matched with the diameter of the outer ring surface of the fourth cylinder body (19-1), the axial lead of the outer cambered surface of the second arc-shaped mounting plate (21-1) is matched with the axial lead of the fourth cylinder body (19-1), a plurality of fourth balls (22-1) are uniformly embedded on the inner cambered surface of the second arc-shaped mounting plate (21-1), the contact parts of the fourth balls (22-1) and the second arc-shaped mounting plate (21-1) are rotationally connected, a second push plate (23-1) is arranged between the inner cambered surface of the second arc-shaped mounting plate (21-1) and the inner wall of the second mounting groove (20-1), the second push plate (23-1) is arranged in the second mounting groove (20-1), one side of the second push plate (23-1) facing the inner cambered surface of the second arc-shaped mounting plate (21-1) is an arc-shaped surface, the diameter of the arc-shaped surface of the second push plate (23-1) is matched with the diameter of the outer ring surface of the fourth cylinder (19-1), a plurality of second magnet blocks (28-1) transversely penetrate through the second push plate (23-1), and the contact positions of the second magnet blocks (28-1) and the second push plate (23-1) are in sliding connection, one end of the second magnet block (28-1) is fixedly connected with the inner wall of the second mounting groove (20-1), the other end of the second magnet block (28-1) is fixedly connected with the inner cambered surface of the second arc mounting plate (21-1), a first trapezoid block (24-1) is fixedly arranged on the side wall of each second push plate (23-1), the other end of each first trapezoid block (24-1) penetrates through the inner wall of the corresponding second mounting groove (20-1) and is in sliding connection with the contact part of the fourth cylinder (19-1), second guide rods (29-1) are symmetrically arranged at the two ends of each first trapezoid block (24-1), one end of each second guide rod (29-1) is fixedly connected with the second push plate (23-1), the other end of each second guide rod (29-1) penetrates through the inner wall of the second mounting groove (20-1) and is fixedly provided with a fourth limit ring (30-1), the contact part of each second guide rod (29-1) is in sliding connection with the fourth cylinder (19-1), a plurality of limit rings (30-1) are arranged between the second guide rods (29-1) and the fourth cylinder (24-1) from top to bottom, a plurality of limit sleeves (31) are arranged on the first guide rods (24-1) from top to bottom, one side of the inclined plane of each first trapezoid block (24-1) is adhered with a second pressing plate (25-1), the outer ring of the second pressing plate (25-1) is in a conical shape, a plurality of sixth balls (56-1) are uniformly embedded on the outer ring surface of the second pressing plate (25-1), the contact parts of the sixth balls (56-1) and the second pressing plate (25-1) are rotationally connected, a plurality of second pressing plates (25-1) are arranged at equal intervals from top to bottom, the axial lines of the plurality of second pressing plates (25-1) are matched, a second vertical rod (26-1) is vertically arranged at the axial center of the plurality of second pressing plates (25-1) in a penetrating mode, the bottom end of the second vertical rod (26-1) is fixedly connected with the center of the bottom surface of the second disc (5-1), the bottom end of the second vertical rod (25-1) is fixedly provided with a second fluted disc (27-1), the bottom end of the second vertical rod (26-1) is fixedly provided with a second fluted disc (27-1), the second fluted disc (27-1) is positioned at the bottom of the fourth fluted disc (27-1) and is fixedly meshed with the bottom surface of the second fluted disc (25-1), the second push-pull rods (32-1) fixed on each second pressing plate (25-1) sequentially penetrate through the rest second pressing plates (25-1) at the upper ends of the second pressing plates and are in sliding connection with the contact positions of the second pressing plates, the top ends of each second push-pull rod (32-1) penetrate through the second disc (5-1) and are in sliding connection with the contact positions of the second disc, the right upper end of each second push-pull rod (32-1) is provided with a second electric telescopic rod (33-1), the telescopic ends of the second electric telescopic rods (33-1) are fixedly connected with the top of one second push-pull rod (32-1) at the right lower end of the second electric telescopic rod, the second electric telescopic rods (33-1) are fixedly installed on the bottom surface of the fixed plate (3), one side of the bottom surface of the second disc (5-1) is fixedly provided with a second vertical plate (46-1), two second cross rods (47-1) transversely penetrate through the second vertical plate (46-1), the positions of the second horizontal rods (47-1) and the second vertical plate (46-1) are in sliding connection with the top of one second push-pull rod, the second horizontal rods (47-1) are fixedly connected with the top of one second push-pull rod (32-1), the second horizontal rods (48-1) extend into the other end of the second cylinder (8-1) towards the second cylinder (8-1), the second cylinder (8-1) and the other end is fixedly connected with the second horizontal rod (48, the utility model discloses a sand mill for the surface of a sand mill, including first picture peg (48-1), second picture peg (48-1) and third barrel (8-1) contact department sliding connection, two second horizontal pole (47-1) other ends are fixed with same second connecting plate (49-1), cover is equipped with eighth spring (50-1) on second horizontal pole (47-1) between second riser (46-1) and second picture peg (48-1), fixedly connected with third connecting plate (51) between second connecting plate (49-1) bottom and first connecting plate (49) top, fixedly connected with U-shaped handle (52) on third connecting plate (51) lateral wall, fixedly connected with center pin (53) between first fluted disc (27) and second fluted disc (27-1), the axial lead of center pin (53) matches with the axial lead of first fluted disc (27-1), the cover is equipped with barrel (54) of polishing on center pin (53), fixedly connected with sand mill surface layer (54) through a plurality of second connecting rod (55) between barrel (54) inner wall and the center pin (53).

2. The efficient polishing and derusting device for steel pipes for building construction according to claim 1, wherein: the first motor (6), the second motor (6-1), the first electric telescopic rod (33) and the second electric telescopic rod (33-1) are respectively and electrically connected with an external power supply through wires.

3. The efficient polishing and derusting device for steel pipes for building construction according to claim 1, wherein: the first electric telescopic rod (33) and the second electric telescopic rod (33-1) are electric push rods of LX700 model.

4. The efficient polishing and derusting device for steel pipes for building construction according to claim 1, wherein: the axial leads of the first disc (5), the second disc (5-1), the first cylinder (8), the third cylinder (8-1), the first toothed ring (17), the second toothed ring (17-1), the second cylinder (19), the fourth cylinder (19-1), the first pressure plate (25) and the second pressure plate (25-1) are all consistent.