Welding part surface treatment equipment after welding of steel structure

Abstract

The surface treatment equipment comprises a rectangular bottom frame, rotating rods are transversely and rotationally connected to the upper portions of the front side and the rear side of the interior of the bottom frame, and a plurality of supporting rollers of the same specification are fixedly connected to the outer surfaces of the two rotating rods; and fixing seats are fixedly connected to the two ends of the rear side of the outer surface of the bottom frame correspondingly, and a threaded rod is transversely and rotationally connected between the two fixing seats. According to the surface treatment equipment for the welding part of the welded steel structure, by arranging the bottom frame and the two rotating rods, when the equipment is used, the tubular steel structure is hoisted to the position above the equipment through hoisting equipment and then directly placed between the two rotating rods of the equipment, then the steel structure can be supported through supporting rollers on the rotating rods, and the welding part of the welded steel structure is subjected to surface treatment; and the tubular steel structure can be driven to rotate along with the continuous rotation of the two rotating rods, so that the welding seam of the steel structure can be conveniently treated, and the overall operation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of weld processing equipment, in particular to a surface processing equipment for a welded part after welding of a steel structure. Background Art

[0002] Welding, also known as fusion, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. There are many sources of energy for modern welding, including gas flame, arc, laser, electron beam, friction and ultrasound. In addition to being used in factories, welding can also be performed in a variety of environments, such as outdoors, underwater and in space. No matter where it is, welding may be dangerous to the operator, so appropriate protective measures must be taken when welding. The possible harm caused by welding to the human body includes burns, electric shock, visual impairment, inhalation of toxic gases, excessive ultraviolet radiation, etc.

[0003] Welds will appear at the welding parts of steel structures, and the welds need to be treated, otherwise they are very likely to rust. There are multiple stages in the treatment of welds, and the tools used in each stage are also different. Therefore, the current weld treatment is generally performed manually in steps. However, some large tubular steel structures need to be turned over during treatment, and manual operation is inconvenient and inefficient. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a surface treatment device for the welding parts of steel structures after welding, which solves the problem that the current weld treatment is generally performed manually in steps, but some large tubular steel structures need to be turned over during treatment, and manual operation is inconvenient and inefficient.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a surface treatment device for welding parts of steel structures after welding, comprising a rectangular bottom frame, wherein the upper parts of the front and rear sides of the bottom frame are both rotatably connected with rotating rods, and the outer surfaces of the two rotating rods are both fixedly connected with a plurality of supporting rollers of the same specifications, and both ends of the rear side of the outer surface of the bottom frame are both fixedly connected with fixed seats, and a threaded rod is rotatably connected between the two fixed seats, and the outer surface of the threaded rod is threadedly connected with a threaded sleeve, and the outer surface of the threaded sleeve is fixedly connected with a sliding seat slidably connected to the rear side surface of the bottom frame;

[0006] A plurality of hydraulic rods are vertically fixedly connected to the top of the sliding seat, and a horizontal cross frame whose inner end extends toward the center line of the bottom frame is transversely fixedly connected to the top of the plurality of hydraulic rods. A mounting groove is provided on the upper surface of the other end of the horizontal cross frame, and an adjusting motor is transversely fixedly connected to the inside of the mounting groove, and a rotating disk is fixedly connected to the outer end of the output shaft of the adjusting motor, and a processing structure is provided on the outer surface of the rotating disk.

[0007] Furthermore, the processing structure includes a plurality of fixed plates fixedly connected to the outer surface of the rotating disk, the plurality of fixed plates are evenly spaced along the circumferential direction of the outer surface of the rotating disk, and the outer surfaces of the plurality of fixed plates are respectively fixedly connected with the first cylinder, the second cylinder, the water pipe and the third cylinder.

[0008] Furthermore, the other end of the movable rod of the first cylinder is fixedly connected to the first processing motor, and the output shaft surface of the first processing motor is fixedly connected to a steel wire ball. The other end of the movable rod of the second cylinder is fixedly connected to a connecting plate perpendicular to the center line, and the other end of the outer surface of the connecting plate is fixedly connected to the second processing motor arranged in the same direction as the second processing motor, and the outer end of the output shaft of the second processing motor is fixedly connected to a polishing grinding wheel.

[0009] Furthermore, the other end of the water supply pipe is connected to a water outlet pipe through a rotating joint, the outer end of the water outlet pipe is fixedly connected to a sponge brush head, the outer surface of the rotating disk and located between the multiple fixed plates is fixedly connected to a water tank, a liquid pump is provided on the water tank, a first water pipe is connected between the inlet of the liquid pump and the water tank, a second water pipe is connected between the outlet of the liquid pump and the water supply pipe, a driven gear is fixedly connected to the outer surface of the water outlet pipe, a third processing motor is fixedly connected to the outer surface of the water outlet pipe, and a driving gear meshing with the driven gear is fixedly connected to the output shaft surface of the third processing motor.

[0010] Furthermore, the outer end of the movable rod of the third cylinder is fixedly connected to a mounting plate which is arranged perpendicular to its center line, the middle part of the outer end surface of the mounting plate is fixedly connected to a connecting seat, the outer end of the connecting seat is hinged to a fourth processing motor, the outer end of the output shaft of the fourth processing motor is fixedly connected to a polishing sand disk, the two side surfaces of the fourth processing motor and the two sides of the outer end of the mounting plate are fixedly connected to hinged seats, and the first electrically-controlled telescopic rod is hinged between the two hinged seats on the same side.

[0011] Furthermore, one end of the two rotating rods can be rotatably passed through one side of the bottom frame and extend outward, the outer surfaces of the two rotating rods and located on the outer side of the bottom frame are fixedly connected with pulleys, the two pulleys are connected by belt transmission, and the other side surface of the bottom frame is laterally fixedly connected with a first servo motor, and the output shaft of the first servo motor can be rotatably passed through the bottom frame and fixedly connected to one end of one of the rotating rods.

[0012] Furthermore, a plurality of guide rods are transversely fixedly connected to the lower part between the two fixed seats, and a sliding hole corresponding to and adapted to the plurality of guide rods is transversely penetrated through a surface of one side of the sliding seat, and the sliding seat is slidably connected to the outer surfaces of the plurality of guide rods through the plurality of sliding holes, and a second servo motor is fixedly connected to the outer surface of one of the fixed seats, and the output shaft of the second servo motor rotatably penetrates the fixed seat and is fixedly connected to one end of the threaded rod.

[0013] Furthermore, a second electrically-controlled telescopic rod is laterally fixedly connected to the lower surface of the inner end of the horizontal cross frame, a latch is fixedly connected to the outer end of the movable rod of the second electrically-controlled telescopic rod, and a plurality of pin holes corresponding to the plurality of fixed plates and matching the outer diameter of the latch are laterally opened on the inner surface of the rotating disk.

[0014] Furthermore, a plurality of supporting pads are fixedly connected to the bottom end of the bottom frame, and reinforcing ribs are fixedly connected between the lower surface of the horizontal cross frame and the outer surface of the movable rod of the hydraulic rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the surface treatment equipment for the welded parts of the steel structure after welding is provided with a bottom frame and two rotating rods. When the device is in use, the tubular steel structure is lifted to the top of the device by a lifting device and then directly placed between the two rotating rods of the device. Then, the steel structure can be supported by the support rollers on the rotating rods, and with the continuous rotation of the two rotating rods, the tubular steel structure can be driven to rotate, which is convenient for the processing operation of the weld of the steel structure, thereby improving the overall operation efficiency.

[0016] (2) The surface treatment equipment for the welded parts of the steel structure after welding is provided with a treatment structure. The treatment structure of the device is controlled by adjusting the motor. The adjusting motor drives the rotating disk to rotate so that multiple different units in the treatment structure move to the treatment position. Different steps of treatment are performed on the tubular steel structure weld by different units. The whole process does not require manual intervention, which reduces labor costs and can also ensure its own efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the processing structure of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the bottom frame of the present invention;

[0019] Figure 3 It is a schematic diagram of the installation structure of the movable seat of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the horizontal cross frame of the present invention.

[0021] In the figure: 1- bottom frame, 2- rotating rod, 3- supporting roller, 4- pulley, 5- first servo motor, 6- fixed seat, 7- threaded rod, 8- threaded sleeve, 9- sliding seat, 10- second servo motor, 11- guide rod, 12- hydraulic rod, 13- horizontal cross frame, 14- reinforcing rib, 15- mounting groove, 16- adjusting motor, 17- rotating disk, 18- fixed plate, 19- first cylinder, 20- first processing motor, 21- steel ball, 22- second cylinder, 23- Connecting plate, 24-second processing motor, 25-polishing grinding wheel, 26-water tank, 27-liquid pump, 28-water pipe, 29-water outlet pipe, 30-sponge brush head, 31-driven gear, 32-third processing motor, 33-driving gear, 34-third cylinder, 35-mounting plate, 36-connecting seat, 37-fourth processing motor, 38-polishing sand disc, 39-articulated seat, 40-first electrically controlled telescopic rod, 41-second electrically controlled telescopic rod, 42-pin hole, 43-support pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-4 The present invention provides a technical solution: a surface treatment device for welding parts after welding of a steel structure, comprising a rectangular bottom frame 1, wherein the upper parts of the front and rear sides of the bottom frame 1 are both rotatably connected with a rotating rod 2, and the outer surfaces of the two rotating rods 2 are both fixedly connected with a plurality of supporting rollers 3 of the same specification, and the two ends of the rear side of the outer surface of the bottom frame 1 are both fixedly connected with a fixing seat 6, and a threaded rod 7 is rotatably connected between the two fixing seats 6, and the outer surface of the threaded rod 7 is threadedly connected with a threaded sleeve 8, and the outer surface of the threaded sleeve 8 is fixedly connected with a sliding seat 9 slidably connected to the rear side surface of the bottom frame 1;

[0024] The top of the sliding seat 9 is vertically fixedly connected to a plurality of hydraulic rods 12, and the tops of the plurality of hydraulic rods 12 are transversely fixedly connected to a horizontal cross frame 13 whose inner ends extend toward the center line direction of the bottom frame 1, and a mounting groove 15 is provided on the upper surface of the other end of the horizontal cross frame 13, and an adjusting motor 16 is transversely fixedly connected to the inside of the mounting groove 15, and a rotating disk 17 is fixedly connected to the outer end of the output shaft of the adjusting motor 16, and a processing structure is provided on the outer surface of the rotating disk 17.

[0025] When the device is in use, the tubular steel structure is lifted to the top of the device by a lifting device and then placed directly between the two rotating rods 2 of the device. The steel structure can then be supported by the support rollers 3 on the rotating rods 2, and the continuous rotation of the two rotating rods 2 can drive the tubular steel structure to rotate, making it convenient to process the welds of the steel structure, thereby improving the efficiency of the overall operation.

[0026] The processing structure of the device is controlled by adjusting the motor 16, and the adjusting motor 16 drives the rotating disk 17 to rotate so that multiple different units in the processing structure move to the processing positions. Different steps of processing are performed on the tubular steel structure welds through different units. The entire process does not require manual intervention, which reduces labor costs and can also ensure its own efficiency.

[0027] By controlling the rotation of the threaded rod 7, the threaded sleeve 8 and the sliding seat 9 fixedly connected to the threaded sleeve 8 can be driven to move in the horizontal direction, so as to adjust the structure thereon to move synchronously. In this way, when placing the steel structure, there is no need to consider the specific placement position of the steel structure, as long as its stability is ensured. After the placement is completed, the processing structure can be driven to move to the welding position by controlling the movement of the sliding seat 9, so that the operation can be carried out, which can also improve the overall work efficiency.

[0028] The processing structure includes a plurality of fixed plates 18 fixedly connected to the outer surface of the rotating disk 17. The plurality of fixed plates 18 are evenly spaced along the circumferential direction of the outer surface of the rotating disk 17. The outer surfaces of the plurality of fixed plates 18 are respectively fixedly connected with the first cylinder 19, the second cylinder 22, the water pipe 28 and the third cylinder 34.

[0029] The other end of the movable rod of the first cylinder 19 is fixedly connected to the first processing motor 20, and the output shaft surface of the first processing motor 20 is fixedly connected to a steel wire ball 21. The other end of the movable rod of the second cylinder 22 is fixedly connected to a connecting plate 23 which is perpendicular to its center line, and the other end of the outer surface of the connecting plate 23 is fixedly connected to the second processing motor 24 which is arranged in the same direction as the second processing motor 24, and the outer end of the output shaft of the second processing motor 24 is fixedly connected to a polishing grinding wheel 25.

[0030] After the steel structure is placed, the processing structure can be driven to move to the position of the weld by controlling the height of the hydraulic rod 12 and adjusting the position of the sliding seat 9. Then the adjusting motor 16 is started, and its output shaft rotates to drive the rotating disk 17 to rotate until the steel wool 21 is rotated to the bottom position. Then the first cylinder 22 starts to run, and its movable rod extends to drive the steel wool 21 to descend, and the steel wool 21 will touch the surface of the weld. Then the first processing motor 20 is started, driving the steel wool 21 to rotate. At the same time, the steel structure will also be driven to rotate under the rotation of the rotating rod 21, so as to perform preliminary treatment on the surface of the weld and scrape off the slag and other particles on it.

[0031] After the preliminary processing is completed, the adjustment motor 16 is started again, driving the polishing wheel 25 to move to the bottom, and then the movable rod of the second cylinder 22 is extended, so that the polishing wheel 25 contacts the weld surface, and the second processing motor 24 starts to run, driving the polishing wheel 25 to rotate to perform preliminary polishing on the weld.

[0032] The other end of the water supply pipe 28 is connected to a water outlet pipe 29 through a rotating joint, and a sponge brush head 30 is fixedly connected to the outer end of the water outlet pipe 29. A water tank 26 is fixedly connected to the outer surface of the rotating disk 17 and located between multiple fixed plates 18. A liquid pump 27 is provided on the water tank 26. A first water pipe is connected between the inlet of the liquid pump 27 and the water tank 26, and a second water pipe is connected between the outlet of the liquid pump 27 and the water supply pipe 28. A driven gear 31 is fixedly connected to the outer surface of the water outlet pipe 29, and a third processing motor 32 is fixedly connected to the outer surface of the water outlet pipe 29. A driving gear 33 meshing with the driven gear 31 is fixedly connected to the output shaft surface of the third processing motor 32.

[0033] When the weld is initially polished, the adjustment motor 16 is started again, and the sponge brush head 30 is driven to the bottom. Then the liquid pump 27 pumps the cleaning liquid in the water tank 26 into the water pipe 28 through the pipeline thereon, and then enters the water outlet pipe 29 through the rotary joint. After that, it can be discharged through the fine holes on the sponge brush head 30. At the same time, the third processing motor 32 continues to run, and the driving gear 33 on the surface of its output shaft drives the driven gear 31 to rotate, and the water outlet pipe 29 and the sponge brush head 30 also rotate synchronously, and the weld is cleaned by it and the cleaning liquid to remove oil stains.

[0034] The outer end of the movable rod of the third cylinder 34 is fixedly connected to a mounting plate 35 which is arranged perpendicular to the center line thereof, a connecting seat 36 is fixedly connected to the middle part of the outer end surface of the mounting plate 35, a fourth processing motor 37 is hinged to the outer end of the connecting seat 36, a polishing sand disc 38 is fixedly connected to the outer end of the output shaft of the fourth processing motor 37, both side surfaces of the fourth processing motor 37 and both sides of the outer end of the mounting plate 35 are fixedly connected to articulated seats 39, and a first electrically-controlled telescopic rod 40 is hinged between the two articulated seats 39 on the same side.

[0035] After the oil stains are removed, the polishing sand table 38 is driven to the lowest end by the adjusting motor 16, and the fourth processing motor 37 drives it to rotate, through which the weld can be finely polished. The angle of the polishing sand table 38 can be changed by controlling the extension and retraction of the two first electrically-controlled telescopic rods 40, thereby improving the polishing fineness.

[0036] One end of the two rotating rods 2 can rotatably pass through one side of the bottom frame 1 and extend outward, the outer surfaces of the two rotating rods 2 and located on the outside of the bottom frame 1 are fixedly connected with pulleys 4, and the two pulleys 4 are connected by belt transmission. The other side surface of the bottom frame 1 is laterally fixedly connected with a first servo motor 5, and the output shaft of the first servo motor 5 can rotatably pass through the bottom frame 1 and is fixedly connected to one end of a rotating rod 2.

[0037] The two rotating rods 2 are connected via a pulley 4 and a belt transmission. One rotating rod 2 can be driven to rotate by a first servo motor 5, so that the two rotating rods 2 rotate synchronously.

[0038] A plurality of guide rods 11 are transversely fixedly connected to the lower part between the two fixed seats 6, and a side surface of the sliding seat 9 is transversely penetrated with sliding holes corresponding to and adapted to the plurality of guide rods 11. The sliding seat 9 is slidably connected to the outer surfaces of the plurality of guide rods 11 through the plurality of sliding holes, and a second servo motor 10 is fixedly connected to the outer surface of a fixed seat 6, and the output shaft of the second servo motor 10 rotatably penetrates the fixed seat 6 and is fixedly connected to one end of the threaded rod 7.

[0039] The guide rod 11 plays a guiding and limiting role to ensure that the movement of the sliding seat 9 will not cause deviation or skew. The second servo motor 10 drives the threaded rod 7 to rotate.

[0040] A second electrically-controlled telescopic rod 41 is laterally fixedly connected to the lower surface of the inner end of the horizontal cross frame 13, and a latch is fixedly connected to the outer end of the movable rod of the second electrically-controlled telescopic rod 41. A plurality of pin holes 42 corresponding to the plurality of fixed plates 18 and matching the outer diameter of the latch are laterally opened on the inner surface of the rotating disk 17.

[0041] After each unit of the processing structure is rotated to the working position, the second electrically-controlled telescopic rod 41 will extend, and the pin at its outer end will be inserted into the corresponding pin hole 42 to limit and fix the rotating disk 16 to prevent the rotating disk 16 from rotating at will during operation.

[0042] A plurality of support pads 43 are fixedly connected to the bottom end of the bottom frame 1 , and a reinforcing rib 14 is fixedly connected between the lower surface of the horizontal cross frame 13 and the outer surface of the movable rod of the hydraulic rod 12 .

[0043] The reinforcing ribs 14 serve to strengthen the connection and improve the stability between the two structures, and the supporting pads 43 support the entire device.

[0044] During operation, the processing structure of the device is controlled by adjusting the motor 16, and the adjusting motor 16 drives the rotating disk 17 to rotate so that multiple different units in the processing structure move to the processing position, and different units are used to process the tubular steel structure welds in different steps. The entire process does not require manual intervention, which reduces labor costs and ensures its own efficiency. By controlling the rotation of the threaded rod 7, the threaded sleeve 8 and the sliding seat 9 fixedly connected to the threaded sleeve 8 can be driven to move horizontally, so as to adjust the structure thereon to move synchronously. In this way, when placing the steel structure, there is no need to consider the specific placement position of the steel structure, as long as its stability is ensured. After the placement is completed, the sliding seat 9 is controlled to move to drive the processing structure to the weld position to carry out the operation, which can also improve the overall work efficiency.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A surface treatment device for welding parts after welding of steel structures, characterized in that: The invention comprises a rectangular bottom frame (1), wherein the upper parts of the front and rear sides of the bottom frame (1) are both laterally rotatably connected to rotating rods (2), the outer surfaces of the two rotating rods (2) are both fixedly connected to a plurality of supporting rollers (3) of the same specification, the two ends of the rear side of the outer surface of the bottom frame (1) are both fixedly connected to fixing seats (6), a threaded rod (7) is laterally rotatably connected between the two fixing seats (6), the outer surface of the threaded rod (7) is threadedly connected to a threaded sleeve (8), and the outer surface of the threaded sleeve (8) is fixedly connected to a sliding seat (9) slidably connected to the rear side surface of the bottom frame (1); The top end of the sliding seat (9) is vertically fixedly connected to a plurality of hydraulic rods (12), and the top ends of the plurality of hydraulic rods (12) are transversely fixedly connected to a horizontal cross frame (13) whose inner ends extend in the direction of the center line of the bottom frame (1). A mounting groove (15) is provided on the upper surface of the other end of the horizontal cross frame (13), and an adjusting motor (16) is transversely fixedly connected inside the mounting groove (15). The outer end of the output shaft of the adjusting motor (16) is fixedly connected to a rotating disk (17), and a processing structure is provided on the outer surface of the rotating disk (17).

2. The surface treatment equipment for welding parts of steel structures after welding according to claim 1 is characterized in that: The processing structure comprises a plurality of fixed plates (18) fixedly connected to the outer surface of the rotating disk (17); the plurality of fixed plates (18) are evenly spaced along the circumferential direction of the outer surface of the rotating disk (17); and the outer surfaces of the plurality of fixed plates (18) are respectively fixedly connected to a first cylinder (19), a second cylinder (22), a water pipe (28) and a third cylinder (34).

3. The surface treatment equipment for welding parts of steel structures after welding according to claim 2 is characterized in that: The other end of the movable rod of the first cylinder (19) is fixedly connected to a first processing motor (20), and the surface of the output shaft of the first processing motor (20) is fixedly connected to a steel ball (21). The other end of the movable rod of the second cylinder (22) is fixedly connected to a connecting plate (23) perpendicular to the center line thereof, and the other end of the outer surface of the connecting plate (23) is fixedly connected to a second processing motor (24) arranged in the same direction as the connecting plate, and the outer end of the output shaft of the second processing motor (24) is fixedly connected to a polishing grinding wheel (25).

4. The equipment for surface treatment of welded parts of steel structures after welding according to claim 2, characterized in that: The other end of the water delivery pipe (28) is connected to a water outlet pipe (29) through a rotating joint, and the outer end of the water outlet pipe (29) is fixedly connected to a sponge brush head (30). The outer surface of the rotating disk (17) is fixedly connected to a water tank (26) located between the plurality of fixed plates (18). A liquid pump (27) is provided on the water tank (26). A first water pipe is connected between the inlet of the liquid pump (27) and the water tank (26), and a second water pipe is connected between the outlet of the liquid pump (27) and the water delivery pipe (28). A driven gear (31) is fixedly connected to the outer surface of the water outlet pipe (29), and a third processing motor (32) is fixedly connected to the outer surface of the water outlet pipe (29). A driving gear (33) meshing with the driven gear (31) is fixedly connected to the output shaft surface of the third processing motor (32).

5. The equipment for surface treatment of welded parts of steel structures after welding according to claim 2, characterized in that: The outer end of the movable rod of the third cylinder (34) is fixedly connected to a mounting plate (35) which is arranged perpendicular to the center line thereof, the middle part of the outer end surface of the mounting plate (35) is fixedly connected to a connecting seat (36), the outer end of the connecting seat (36) is hinged to a fourth processing motor (37), the outer end of the output shaft of the fourth processing motor (37) is fixedly connected to a polishing sand disk (38), the two side surfaces of the fourth processing motor (37) and the two sides of the outer end of the mounting plate (35) are fixedly connected to an articulated seat (39), and the first electrically controlled telescopic rod (40) is hinged between the two articulated seats (39) on the same side.

6. The equipment for surface treatment of welded parts of steel structures after welding according to claim 1, characterized in that: One end of the two rotating rods (2) can rotatably pass through one side of the bottom frame (1) and extend outwardly; the outer surfaces of the two rotating rods (2) and located outside the bottom frame (1) are fixedly connected to pulleys (4); the two pulleys (4) are connected via a belt transmission; the other side surface of the bottom frame (1) is laterally fixedly connected to a first servo motor (5); the output shaft of the first servo motor (5) can rotatably pass through the bottom frame (1) and is fixedly connected to one end of one of the rotating rods (2).

7. The equipment for surface treatment of welded parts of steel structures after welding according to claim 1, characterized in that: A plurality of guide rods (11) are transversely fixedly connected to the lower part between the two fixed seats (6); a side surface of the sliding seat (9) is transversely penetrated with sliding holes corresponding to and matching the plurality of guide rods (11); the sliding seat (9) is slidably connected to the outer surfaces of the plurality of guide rods (11) through the plurality of sliding holes; a second servo motor (10) is fixedly connected to the outer surface of one of the fixed seats (6); an output shaft of the second servo motor (10) rotatably penetrates the fixed seat (6) and is fixedly connected to one end of the threaded rod (7).

8. The equipment for surface treatment of welded parts of steel structures after welding according to claim 1, characterized in that: A second electrically-controlled telescopic rod (41) is fixedly connected to the lower surface of the inner end of the horizontal cross frame (13), and a latch is fixedly connected to the outer end of the movable rod of the second electrically-controlled telescopic rod (41). A plurality of pin holes (42) corresponding to the plurality of fixed plates (18) and matching the outer diameter of the latch are formed laterally on the inner surface of the rotating disk (17).

9. The equipment for surface treatment of welded parts of steel structures after welding according to claim 1, characterized in that: A plurality of support pads (43) are fixedly connected to the bottom end of the bottom frame (1), and reinforcing ribs (14) are fixedly connected between the lower surface of the horizontal cross frame (13) and the outer surface of the movable rod of the hydraulic rod (12).

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