CN111872815A

CN111872815A - Polishing antirust device for machining steel structure

Info

Publication number: CN111872815A
Application number: CN202010510126.9A
Authority: CN
Inventors: 高健; 王争; 周志红; 杨天玺
Original assignee: Lu'an Weihong Steel Structure Co ltd
Current assignee: Lu'an Weihong Steel Structure Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-11-03

Abstract

The invention discloses a polishing antirust device for steel structure processing, and relates to the technical field of steel structure processing; the problem that a steel structure cannot be effectively polished is solved; the device comprises a base and a supporting platform which is fixed at the top end of the base, plays a supporting role and inclines upwards, wherein a pretreatment frame is fixed at one side of the top end of the base through a screw, a through hole with an H-shaped structure is formed in the side wall of the pretreatment frame, and more than two groups of balls are rotatably connected to the top end and the bottom end of the through hole; the lateral wall of base is provided with the mount of portal frame structure, and the bottom of mount is provided with the inlayer and is the dull polish frame of dull polish structure. According to the invention, the pretreatment frame provided with the balls is arranged, and the balls can roll under the friction of the H-shaped steel structure to give certain vibration to the H-shaped steel structure, so that large-particle rust chips adhered to the surface layer of the pretreatment frame can be shaken to reduce the pressure of subsequent grinding and chip removal, and the phenomenon of incomplete grinding of the rust chips hidden and fastened below the pretreatment frame is avoided.

Description

Polishing antirust device for machining steel structure

Technical Field

The invention relates to the technical field of steel structure processing, in particular to a polishing and rust preventing device for steel structure processing.

Background

In the production and processing of steel structures, burrs or unevenness of the surface of a workpiece are inevitably generated, or when rust, dirt, and the like on the surface of the workpiece are cleaned, the workpiece needs to be polished. Today steel sanding is often done by manually holding a sander or using a sanding device.

Through retrieval, the patent with the Chinese patent application number of 201920070052.4 discloses a polishing device for steel structure processing, which comprises a workbench and a supporting frame; the supporting frame is fixed on the upper part of the workbench; a polishing assembly is arranged on the bottom surface of the supporting frame; the polishing assembly comprises a first slide rail, a second slide rail, a motor and a polishing sheet; the first sliding rail is fixedly connected to the lower surface of the supporting frame; the motor is arranged below the second sliding rail; the output end of the motor is connected with the rotating shaft through a coupler. In the above-mentioned patent, a grinding device for steel construction processing has following not enough: when the steel construction rust cleaning of polishing, the device though can use the motor to drive the buffing piece and polish to the steel construction top layer, but the diameter of its buffing piece is limited, when H shaped steel structure polishes, because its unique appearance structure and top layer rust generally have some rust fillings that are more not hard up, single buffing piece can only rotate the steel construction of polishing local, leads to the steel construction to polish rust cleaning in-process to appear the steel construction top layer mar more and inhomogeneous easily, the rust under the loose rust fillings can not effectively polish clean problem.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a polishing antirust device for machining a steel structure.

In order to achieve the purpose, the invention adopts the following technical scheme:

a polishing antirust device for machining a steel structure comprises a base and a supporting table which is fixed at the top end of the base, plays a supporting role and inclines upwards, wherein a pretreatment frame is fixed at one side of the top end of the base through a screw, a through hole with an H-shaped structure is formed in the side wall of the pretreatment frame, and more than two groups of balls are rotatably connected to the top end and the bottom end of the through hole; the side wall of the base is provided with a fixing frame of a portal frame structure, the bottom end of the fixing frame is provided with a grinding frame of which the inner layer is of a grinding structure, the side edge of the grinding frame is provided with a second through hole of an H-shaped structure, and one end of the fixing frame is also provided with a top rust removal mechanism; the top of the supporting table is provided with a bracket, and the inner wall of the bracket is rotationally connected with more than ten groups of first grinding frames.

Preferably: the top rust cleaning mechanism comprises two longitudinal beam top cleaning assemblies and a cross beam top cleaning assembly, the longitudinal beam top cleaning assemblies comprise two second connecting frames and a second polishing frame connected between the two second connecting frames in a rotating mode, a connecting rod is arranged on the outer wall of the second connecting frame located on the outer side, a fastening sliding block sliding on the side wall of the fixing frame is arranged at one end of the connecting rod, and one end of the fastening sliding block is connected with a fastening bolt through threads.

Preferably: crossbeam top clearance subassembly is including rotating the fixed axle of connecting in two inboard second link outer walls, and the outer wall of fixed axle has cup jointed the brush cleaner, the brush cleaner is cylinder column structure, and the both ends of brush cleaner all bond the side brush that has the ball form, and the both sides inner wall of brace table rotates and is connected with same crossbeam bottom clearance subassembly that constitutes the same with crossbeam top clearance subassembly, and crossbeam bottom clearance subassembly is located crossbeam top clearance subassembly under.

Preferably: the first polishing frame is of an H-shaped structure, clamping grooves are formed in the inner walls of the two sides of the first polishing frame and are of a three-quarter circular ring structure, a hairbrush is arranged on the side wall of the first polishing frame, the hairbrush and the clamping grooves form a circular ring, and the first polishing frame and the second polishing frame are identical in specification.

Preferably: the inner wall of the supporting table is provided with a fixing table, the inner wall of the fixing table is connected with a sleeve in a rotating mode, the inner wall of the sleeve is connected with a threaded rod through threads, and one end of the threaded rod is connected with a clamping mechanism through a connecting assembly.

Preferably: the clamping mechanism comprises a clamping plate, the side wall of the clamping plate is provided with an H-shaped clamping groove, the top end and the bottom end of the H-shaped clamping groove are provided with clamping pieces with springs, threaded through holes are formed in two sides of the clamping plate, the two ends of each clamping piece are provided with inclined platforms, the surface layer of each clamping piece is of a sawtooth structure, and the top end of each sawtooth structure is arc-shaped.

Preferably: the connecting assembly comprises a connecting platform and a connecting rod fixed at the top end of the connecting platform, a first connecting frame is arranged at the top end of the connecting rod, the other end of the first connecting frame is arranged on the side wall of the clamping plate, the clamping plate is connected to the supporting platform in a sliding mode, and a push-pull assembly is arranged at one end of the first connecting frame.

Preferably: the push-and-pull assembly comprises a side sliding groove and a rotating wheel rolling on the inner wall of the side sliding groove, the side wall of the rotating wheel is rotatably connected with a Z-shaped rod, and the outer wall of the other side of the rotating wheel is rotatably connected with a rod body connected with the first connecting frame.

Preferably: one side of the supporting table is provided with a dust collection mechanism, the dust collection mechanism comprises a dust collection box, a dust collection driving assembly and a fan cover, the dust collection driving assembly is arranged in the dust collection box, the fan cover is communicated with the dust collection box through a dust collection pipe, the fan cover is arranged on the side wall of the fixing frame, the fan cover inclines downwards, the dust collection driving assembly comprises a transmission shaft and an auxiliary shaft, the auxiliary shaft is in transmission fit with the transmission shaft through a bevel gear, the top end of the auxiliary shaft is rotatably connected with a dust collection fan assembly, one end of a sleeve is provided with a driving shaft; the dust collection mechanism further comprises a dust filter bag fixed at the top in the dust collection box and an air inlet filter disc fixed on the side wall of the dust collection box, and an air outlet is formed in one side of the dust collection box.

As a further technical scheme of the invention: the one end sliding connection of base has the collection sediment box, and two slag receiving openings have been seted up on the top of collection sediment box, and slag receiving opening is located the below of preliminary treatment frame both sides, and collection sediment box inboard penetrates the base and is located the mount under, the base top is provided with the cushion table with a supporting bench low side junction, and the cushion table is smooth arc plastic construction.

The invention has the beneficial effects that:

1. through setting up the preliminary treatment frame of installing the ball, the through-hole of the H type structure on the preliminary treatment frame can be polished to the unique appearance of H shaped steel structure, and sets up the ball and can roll under the friction of H shaped steel structure and give the certain vibration of H shaped steel structure to the large granule rust dust that can tremble its top layer adhesion reduces the pressure of follow-up dull polish antidandruff, and avoids hiding the rust dust incomplete phenomenon of polishing that fastens below it and taking place.

2. Through setting up the dull polish frame, and the dull polish side is provided with the second through-hole of H type structure, through setting up first frame of polishing, second frame of polishing and top rust cleaning mechanism, the bottom edge iron fillings of H type steel structure can be got rid of in the friction to first frame of polishing, the second frame of polishing can polish and get rid of H type steel structure top edge iron fillings, the brush cleaner of roll shape can rotate the rust dust and the collocation side brush cleaner on brush H type steel structure crossbeam surface under the effect of frictional force and can carry out the brush cleaner to longeron side surface and interior turning, the chip cleaner is more comprehensive.

3. Be provided with the draw-in groove in first grinding frame and the second grinding frame, can put the slice sand brush card at first grinding frame skin, and the design of brush and draw-in groove one-tenth closed loop circle, can rub and brush surperficial rust comprehensively, the design of brush has compensatied the space of sand brush junction, the edges and corners that can avoid forming behind the winding ring at slice sand brush both ends produce the scratch wearing and tearing to the steel construction top layer, play the effect of protection steel construction, and the iron fillings on clearance its top layer that can be quick.

4. Through setting up fixture, the grip block peripheral hardware H type centre gripping groove adaptation H shaped steel structure sets up the clamping piece that has the spring simultaneously, and the H shaped steel structure of adaptable more specification is polished and is derusted, and the clamping piece top layer sets up to top for circular-arc sawtooth structure, and unevenness's clamping face has increased frictional force, and can avoid the wearing and tearing on sharp-pointed point pair surface.

5. Through setting up the Z type pole that has the runner, can be through manual or electric push rod, fixed steel construction is dragged to driven modes such as hydraulic stem, the pulling degree of difficulty has been reduced, need not to climb along the slope of a supporting bench is too high, the degree of difficulty of steel construction push-and-pull has been reduced, promote threaded rod and the sleeve that the subassembly is connected simultaneously, turn into the circular rotation with linear motion, can be through the transmission of transmission shaft and auxiliary shaft, the accent dust absorption fan subassembly rotates, the motor that the traditional dust catcher of replacing completely used, equipment cost and electric power cost have been reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure proposed by the present invention;

FIG. 2 is a top view of the overall structure proposed by the present invention;

FIG. 3 is a schematic view of the overall side structure proposed by the present invention;

FIG. 4 is an enlarged view of the fixing frame according to the present invention;

FIG. 5 is a schematic structural view of a push-pull assembly according to the present invention;

FIG. 6 is a schematic structural view of a first polishing frame according to the present invention;

FIG. 7 is a schematic structural view of a dust suction mechanism according to the present invention;

FIG. 8 is a schematic structural diagram of a clamping mechanism according to the present invention;

fig. 9 is a schematic structural diagram of a top rust removing mechanism provided by the invention.

In the figure: the device comprises a base 1, a support platform 2, a side chute 3, a bracket 4, a first connecting frame 5, a clamping mechanism 6, a clamping plate 601, a spring 602, an inclined table 603, a clamping piece 604, a top rust removal mechanism 7, a sweeping brush 701, a sweeping brush 702, a second polishing frame 703, a connecting rod 704, a second connecting frame 705, a fastening bolt 706, a fastening sliding block 707, a fixing frame 8, a pretreatment frame 9, a ball bearing 10, a slag collecting box 11, a slag receiving port 12, a buffer platform 13, a 14Z-shaped rod 15, a dust suction box 16, a fixing platform 16, a driving shaft 17, a driving shaft 18, a connecting platform 19, a connecting rod 20, a threaded rod 21, a sand grinding frame 22, a wind cover 23, a rotating wheel 24, a first grinding frame 25, a clamping groove 26, a brush 27, an auxiliary shaft 28, a dust suction fan assembly 29, a dust outlet 30, a filter bag 31, a dust suction pipe 32.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1:

a polishing antirust device for machining a steel structure is shown in figures 1-9 and comprises a base 1 and a support platform 2 which is fixed at the top end of the base 1 to play a supporting role and inclines upwards, wherein a pretreatment frame 9 is fixed at one side of the top end of the base 1 through a screw, a through hole with an H-shaped structure is formed in the side wall of the pretreatment frame 9, and more than two groups of balls 10 are rotatably connected to the top end and the bottom end of the through hole; the number of the balls 10 is not limited, in the embodiment, preferably, the number of the balls 10 is two, the through holes of the H-shaped structure can polish the unique appearance of the H-shaped steel structure, and the balls 10 can roll under the friction of the H-shaped steel structure to give certain vibration to the H-shaped steel structure, so that large-particle rust chips adhered to the surface layer of the balls can be shaken to reduce the pressure of subsequent sanding and chip removal; the side wall of the base 1 is welded with a fixing frame 8 of a portal frame structure, the bottom end of the fixing frame 8 is fixedly provided with a grinding frame 22 of which the inner layer is of a grinding structure through bolts, the side edge of the grinding frame 22 is provided with a second through hole of an H-shaped structure, one end of the fixing frame 8 is also provided with a top rust removing mechanism 7, and when the steel structure of the H-shaped structure passes through the second through hole, the grinding frame 22 rubs the surface layer of the steel structure to remove iron rust on the surface; the welding of the top of brace table 2 has bracket 4, and the inner wall of bracket 4 rotates and is connected with ten first polishing framves 25 more than organizing, and first polishing frame 25 can rub the bottom edge iron fillings of getting rid of the H shaped steel structure, and the rust on steel construction top layer can all-roundly be clear away to collocation top rust cleaning mechanism 7.

The problem of incomplete cleaning of the H-shaped steel structure is solved; as shown in fig. 9, the top rust removing mechanism 7 includes two longitudinal beam top cleaning assemblies and a cross beam top cleaning assembly, the longitudinal beam top cleaning assembly includes two second connecting frames 705 and a second polishing frame 703 rotatably connected between the two second connecting frames 705, a connecting rod 704 is welded on the outer wall of the second connecting frame 705 located on the outer side, a fastening slider 707 sliding on the side wall of the fixing frame 8 is welded on one end of the connecting rod 704, a fastening bolt 706 is connected on one end of the fastening slider 707 through a thread, the fastening slider 707 is slidably arranged on the side edge of the fixing frame 8, so that the top rust removing mechanism 7 can be adjusted up and down to adapt to the position of a steel structure, the flexibility is high, and the second polishing frame 703 can be matched with the first polishing frame 25 to polish and remove rust of the longitudinal beam; crossbeam top clearance subassembly is including rotating the fixed axle of connecting in two inboard second link 705 outer walls, and the outer wall of fixed axle has cup jointed brush cleaner 701, and not additional the injecing to brush cleaner 701's specification, in this embodiment, it is preferred, brush cleaner 701 is cylinder column structure, and brush cleaner 701's both ends all bond the side brush 702 that has the ball form, and the brush cleaner 701 of cylinder form can rotate the rust dust on brush H shaped steel structure crossbeam surface and collocation side brush 702 and can carry out the brush to longeron side surface and internal corner under the effect of frictional force, and the chip removal is more comprehensive, and the both sides inner wall of brace table 2 rotates and is connected with same crossbeam bottom clearance subassembly that constitutes the same with crossbeam top clearance subassembly, crossbeam bottom clearance subassembly is located crossbeam top clearance subassembly under, can clear up the rust dust of the inboard crossbeam bottom of H shaped steel.

In order to facilitate the replacement of the sand brushes on the first polishing frame 25 and the second polishing frame 703, as shown in fig. 6, the first polishing frame 25 is of an H-shaped structure, the inner walls of the two sides of the first polishing frame 25 are both provided with a clamping groove 26, the clamping groove 26 is of a three-quarter circular structure, the side wall of the first polishing frame 25 is bonded with a brush 27, the brush 27 and the clamping groove 26 form a circular ring, the clamping groove 26 is arranged to clamp the sheet sand brush on the outer layer of the first polishing frame 25, and the design that the brush 27 and the clamping groove 26 form a closed-loop circle can prevent edges formed after the two ends of the sheet sand brush are wound around the circular ring from generating scratch abrasion on the surface layer of the steel structure, thereby protecting the steel structure and rapidly cleaning iron chips on the surface layer; meanwhile, the first sanding frame 25 and the second sanding frame 703 have the same specifications.

In order to facilitate moving of the steel structure, as shown in fig. 1-5, a fixed table 16 is welded on the inner wall of the support table 2, a sleeve is rotatably connected to the inner wall of the fixed table 16, the inner wall of the sleeve is connected with a threaded rod 21 through threads, one end of the threaded rod 21 is connected with a clamping mechanism 6 through a connecting assembly, the H-shaped steel structure can be clamped and fixed through the clamping mechanism 6 so as to facilitate moving of the H-shaped steel structure, and a push-pull assembly is arranged on one side of the connecting assembly so as to achieve a driving effect;

in the present embodiment, preferably, as shown in fig. 8, the clamping mechanism 6 includes a clamping plate 601, and the side wall of the clamping plate 601 is provided with an H-shaped clamping groove, the top end and the bottom end of the H-shaped clamping groove are both welded with clamping pieces 604 having springs 602, two sides of the clamping plate 601 are provided with threaded through holes, two ends of each clamping piece 604 are both welded with ramps 603, the surface layer of each clamping piece 604 is of a sawtooth structure, and the top end of each sawtooth structure is arc-shaped, the arrangement of the springs 602 can elastically adjust the distance between the two clamping pieces 604, the clamping pieces 604 of the sawtooth structure can increase the friction force between the steel structure and the steel structure, and the arc-shaped vertex angle reduces the abrasion of the steel structure;

the connecting assembly comprises a connecting table 19 and a connecting rod 20 fixed at the top end of the connecting table 19, a first connecting frame 5 is arranged at the top end of the connecting rod 20, the other end of the first connecting frame 5 is welded on the side wall of the clamping plate 601, the clamping plate 601 is connected to the supporting table 2 in a sliding mode, and a push-pull assembly is arranged at one end of the first connecting frame 5;

in order to facilitate the movement of the steel structure, as shown in fig. 5, the push-pull assembly includes a side sliding groove 3 and a rotating wheel 24 rolling on the inner wall of the side sliding groove 3, the side wall of the rotating wheel 24 is rotatably connected with a Z-shaped rod 14, the outer wall of the other side of the rotating wheel 24 is rotatably connected with a rod body connected with the first connecting frame 5, the friction between the push-pull assembly and the side sliding groove 3 can be reduced through the rolling of the rotating wheel 24, the fixed steel structure can be pulled through the Z-shaped rod 14 in a manual or electric push rod, hydraulic rod and other driving modes, the pulling difficulty is reduced, and the climbing along the slope of the supporting table.

In order to facilitate the residue cleaning at the upper end of the steel structure, as shown in fig. 2 and 7, a dust suction mechanism is welded at one side of the support table 2, members of the dust suction mechanism are not limited, and may be a dust collector or a dust suction fan, and in the present embodiment, preferably, the dust suction mechanism includes a dust suction box 15, a dust suction driving assembly arranged in the dust suction box 15, and a fan housing 23 communicated with the dust suction box 15 through a dust suction pipe 32, the fan housing 23 is welded at the side wall of the fixed frame 8, the fan housing 23 is inclined downward, the dust suction driving assembly includes a transmission shaft 18 and an auxiliary shaft 28 forming transmission fit with the transmission shaft 18 through a helical gear, the top end of the auxiliary shaft 28 is rotatably connected with a dust suction fan assembly 29, one end of the sleeve is welded with a driving shaft 17, and the other end of; when the Z-shaped rod 14 is pulled, the threaded rod 21 can be pulled out through the transmission of the first connecting frame 5, and the sleeve is driven to rotate by the transmission mode of the threads, so that the dust collection fan assembly 29 is driven to rotate by the transmission of the driving shaft 17 and the transmission shaft 18, a motor used by the traditional dust collector is completely replaced, and the equipment cost and the electric power cost are reduced; the dust collection mechanism further comprises a dust filter bag 31 fixed at the inner top of the dust collection box 15 and an air inlet filter sheet 33 fixed on the side wall of the dust collection box 15, an air outlet 30 is formed in one side of the dust collection box 15, a complete dust collector without power driving is formed, and scrap iron which cannot fall freely on the top surface layer of the steel structure can be effectively cleaned.

In the embodiment, when the device is used, the device is fixed at a proper position, the H-shaped steel structure is inserted into the pretreatment frame 9 and passes through the grinding frame 22, and the device is inserted between the two clamping pieces 604 and can also pass through the threaded through holes on the two sides of the clamping plate 601 by using bolts to clamp and fix the H-shaped steel structure, so that the Z-shaped rod 14 can be pulled, in the pulling process, the rolling ball 10 rolls due to friction to cause the surface layer of the steel structure to vibrate, so that loose rust on the surface layer can be shaken off, the grinding frame 22 rubs the surface layer, meanwhile, the sand brushes on the surface layers of the first grinding frame 25 and the second grinding frame 703 perform auxiliary grinding and rust removal on the surface layer, the cleaning brush 701 rotates to clean the surface layer, and simultaneously the sleeve sleeved with the threaded rod 21 is driven to rotate by the pulling of the first connecting frame 5, at the moment, the driving shaft 17 is driven to rotate so as to drive the dust collection fan, and sucking the rust chips polished from the surface layer of the H-shaped steel structure into a dust filter bag 31 for collection.

Example 2:

a polishing antirust device for machining a steel structure is shown in figure 1 and aims to solve the problem of conveniently cleaning rust slag; the present embodiment is modified from embodiment 1 as follows: one end of the base 1 is connected with a slag collecting box 11 in a sliding mode, the top end of the slag collecting box 11 is provided with two slag receiving ports 12, the slag receiving ports 12 are located below two sides of the pretreatment frame 9, and the inner side of the slag collecting box 11 penetrates through the base 1 and is located right below the fixing frame 8 so as to receive rust slag; simultaneously, the welding of base 1 top and the low limit junction of brace table 2 has cushion table 13, and cushion table 13 is smooth arc plastic construction, can accept steel construction slope tie point, plays the effect of accepting steel construction slope inflection point.

This embodiment is when using, at the in-process of polishing, and the rust on H shaped steel structure top layer falls under the dead weight condition, and the rust that it dropped can be accepted to collection sediment box 11, and bracket 4 has certain gradient along with a supporting bench 2 to can clean the leading-in low limit one side of top layer rust gliding.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A polishing and rust preventing device for machining a steel structure comprises a base (1) and a supporting table (2) which is fixed at the top end of the base (1) to play a supporting role and inclines upwards, and is characterized in that a pretreatment frame (9) is fixed at one side of the top end of the base (1) through a screw, a through hole of an H-shaped structure is formed in the side wall of the pretreatment frame (9), and more than two groups of balls (10) are rotatably connected to the top end and the bottom end of the through hole; a fixing frame (8) of a portal frame structure is arranged on the side wall of the base (1), a sanding frame (22) with a frosted structure as an inner layer is arranged at the bottom end of the fixing frame (8), a second through hole of an H-shaped structure is arranged on the side edge of the sanding frame (22), and a top rust removal mechanism (7) is further arranged at one end of the fixing frame (8); the top end of the supporting platform (2) is provided with a bracket (4), and the inner wall of the bracket (4) is rotationally connected with more than ten groups of first grinding frames (25).

2. The grinding rust prevention device for machining the steel structure according to claim 1, wherein the top rust removal mechanism (7) comprises two longitudinal beam top cleaning assemblies and a cross beam top cleaning assembly, the longitudinal beam top cleaning assemblies comprise two second connecting frames (705) and a second grinding frame (703) rotatably connected between the two second connecting frames (705), a connecting rod (704) is arranged on the outer wall of the second connecting frame (705) located on the outer side, a fastening sliding block (707) sliding on the side wall of the fixing frame (8) is arranged at one end of the connecting rod (704), and a fastening bolt (706) is connected to one end of the fastening sliding block (707) through threads.

3. The polishing and rust preventing device for processing the steel structure as claimed in claim 2, wherein the beam top cleaning assembly comprises a fixed shaft rotatably connected to outer walls of two second connecting frames (705) at the inner side, a cleaning brush (701) is sleeved on the outer wall of the fixed shaft, the cleaning brush (701) is of a roller-shaped structure, spherical side cleaning brushes (702) are bonded to two ends of the cleaning brush (701), the inner walls at two sides of the supporting table (2) are rotatably connected with the same beam bottom cleaning assembly which is the same as the beam top cleaning assembly, and the beam bottom cleaning assembly is located under the beam top cleaning assembly.

4. The grinding and rust preventing device for machining the steel structure according to claim 3, wherein the first grinding frame (25) is of an H-shaped structure, clamping grooves (26) are formed in inner walls of two sides of the first grinding frame (25), the clamping grooves (26) are of a three-quarter circular ring structure, a brush (27) is arranged on a side wall of the first grinding frame (25), the brush (27) and the clamping grooves (26) form a circular ring, and the first grinding frame (25) and the second grinding frame (703) are identical in specification.

5. The grinding and rust preventing device for machining the steel structure as claimed in claim 1, characterized in that the inner wall of the supporting platform (2) is provided with a fixed platform (16), the inner wall of the fixed platform (16) is rotatably connected with a sleeve, the inner wall of the sleeve is connected with a threaded rod (21) through threads, and one end of the threaded rod (21) is connected with the clamping mechanism (6) through a connecting component.

6. The grinding and rust-preventing device for machining the steel structure according to claim 5, wherein the clamping mechanism (6) comprises a clamping plate (601), the side wall of the clamping plate (601) is provided with an H-shaped clamping groove, clamping pieces (604) with springs (602) are arranged at the top end and the bottom end of the H-shaped clamping groove, threaded through holes are formed in two sides of the clamping plate (601), inclined platforms (603) are arranged at two ends of each clamping piece (604), the surface layer of each clamping piece (604) is of a sawtooth structure, and the top end of each sawtooth structure is arc-shaped.

7. The grinding and rust-preventing device for machining the steel structure according to claim 6, characterized in that the connecting assembly comprises a connecting table (19) and a connecting rod (20) fixed at the top end of the connecting table (19), the top end of the connecting rod (20) is provided with a first connecting frame (5), the other end of the first connecting frame (5) is arranged on the side wall of the clamping plate (601), the clamping plate (601) is slidably connected to the supporting table (2), and one end of the first connecting frame (5) is provided with a push-pull assembly.

8. The grinding and rust preventing device for machining the steel structure according to claim 7, wherein the push-pull assembly comprises a side sliding chute (3) and a rotating wheel (24) rolling on the inner wall of the side sliding chute (3), the side wall of the rotating wheel (24) is rotatably connected with a Z-shaped rod (14), and the outer wall of the other side of the rotating wheel (24) is rotatably connected with a rod body connected with the first connecting frame (5).

9. The polishing and rust-preventing device for machining the steel structure according to claim 8, wherein a dust suction mechanism is arranged on one side of the supporting table (2), the dust suction mechanism comprises a dust suction box (15), a dust suction driving assembly arranged in the dust suction box (15) and a fan cover (23) communicated with the dust suction box (15) through a dust suction pipe (32), the fan cover (23) is arranged on the side wall of the fixed frame (8), the fan cover (23) inclines downwards, the dust suction driving assembly comprises a transmission shaft (18) and an auxiliary shaft (28) in transmission fit with the transmission shaft (18) through a bevel gear, the top end of the auxiliary shaft (28) is rotatably connected with a dust suction fan assembly (29), one end of a sleeve is provided with a driving shaft (17), and the other end of the driving shaft (17) is in transmission fit with the transmission shaft (18) through the bevel gear; the dust collection mechanism further comprises a dust filter bag (31) fixed at the inner top of the dust collection box (15) and an air inlet filter sheet (33) fixed on the side wall of the dust collection box (15), and an air outlet (30) is formed in one side of the dust collection box (15).

10. The grinding and rust-preventing device for machining the steel structure according to any one of claims 1 to 9, wherein one end of the base (1) is slidably connected with a slag collection box (11), two slag receiving ports (12) are formed in the top end of the slag collection box (11), the slag receiving ports (12) are located below two sides of the pretreatment frame (9), the inner side of the slag collection box (11) penetrates through the base (1) and is located right below the fixing frame (8), a buffer table (13) is arranged at the joint of the top end of the base (1) and the lower edge of the supporting table (2), and the buffer table (13) is of a smooth arc-shaped plastic structure.