A cladding apparatus and method for building steel members

Abstract

The application discloses a film covering equipment and method for building steel components, and relates to the technical field of steel component film covering.The equipment comprises a fixing frame for supporting an I-shaped steel, a film covering mechanism for covering the I-shaped steel is slidably arranged on the fixing frame;the film covering mechanism comprises a roller frame with a film roller, a moving piece, a sleeve ring, a circumferential driving mechanism, an outer gear ring and a transverse moving mechanism;the two sleeve rings are slidably connected with the fixing frame through the moving piece;the two outer gear rings are coaxially installed on the opposite sides of the two sleeve rings;the roller frame is installed between the two outer gear rings;the circumferential driving mechanism is installed between the roller frame and the sleeve ring;the circumferential driving mechanism is used for driving the outer gear ring to rotate;the transverse moving mechanism is installed between the outer gear ring and the moving piece.The film roller on the roller frame can be conveniently horizontally moved in the process of circumferential revolution along the I-shaped steel, so that the I-shaped steel can be continuously and comprehensively covered, the film covering efficiency is effectively improved, and the film covering quality is improved.

Description

Technical Field

[0001] This invention relates to the field of steel component coating technology, and specifically to a coating device and method for building steel components. Background Technology

[0002] In recent years, I-beams, as core load-bearing components in steel structure buildings, have been widely used in industrial plants, large-span stadiums, and other projects due to their unique bending resistance advantages caused by their H-sections. However, the protection against rust and corrosion during transportation and on-site storage of these profiles still faces significant challenges. Traditional coating processes often involve manually applying elastic membranes to the surface of steel components, but this approach reveals significant defects when dealing with non-flat sections like I-beams.

[0003] Because of the continuous angular structure at the junction of the web and flange of the I-beam, the membrane material is prone to stress concentration at these angles due to uneven stretching during manual coating, leading to localized thinning or even cracking of the membrane layer and affecting coating quality. A more significant problem is that when the I-beam is laid flat on the transport support, the contact surface between the lower flange and the support forms a closed area, making it difficult for operators to completely embed the membrane material into this interface. This makes this area a high-risk location for corrosion initiation. Such blind spots caused by structural characteristics often require repeated adjustments to the component position for secondary membrane application, significantly reducing construction efficiency. Furthermore, the already coated area often experiences wear due to mechanical contact during component repositioning, resulting in secondary loss of protective performance. Summary of the Invention

[0004] This invention provides a film coating device and method for building steel components, which can solve the problem in the prior art that the position of I-beam steel components needs to be adjusted and manually re-applied during the film coating process, thus affecting the film coating quality and efficiency.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] The first aspect of the present invention provides a film coating device for building steel components, including a fixing frame for supporting I-beams, and a film coating mechanism for coating the I-beams is slidably sleeved on the fixing frame.

[0007] The coating mechanism includes a roller frame with a film roller, a movable component, a collar, a circumferential drive mechanism, an outer gear ring, and a lateral movement mechanism. Both collars are slidably connected to the fixed frame via the movable component. The two outer gear rings are coaxially mounted on opposite sides of the two collars. The roller frame is mounted between the two outer gear rings. The circumferential drive mechanism is mounted between the roller frame and the collar, and is used to drive the outer gear ring to rotate. The lateral movement mechanism is mounted between the outer gear ring and the movable component. When the outer gear ring rotates, it drives the movable component to move through the lateral movement mechanism.

[0008] As a further embodiment of the present invention: the fixing frame includes a T-shaped guide rail and a "7"-shaped support frame, the side of the support frame near the bottom is connected to the end of the T-shaped guide rail, and the horizontal part of the support frame is used to support the I-shaped steel.

[0009] As a further embodiment of the present invention: the moving part includes a support plate, a T-shaped slot and a traveling wheel. The top of the support plate has an arc-shaped structure, and the top of the support plate is connected to the bottom arc surface of the collar. The T-shaped slot is opened through the side wall of the support plate near the bottom. The support plate is slidably connected to the T-shaped guide rail through the T-shaped slot. The traveling wheel is symmetrically installed on the bottom of the support plate.

[0010] As a further embodiment of the present invention: the roller frame includes a U-shaped plate, a partition plate and a convex plate. The U-shaped plate is installed between two external toothed rings, and the two convex plates are symmetrically installed at the bottom of the U-shaped plate. The partition plate is installed between the opposing side walls on both sides of the U-shaped plate. The film roller is located above the partition plate and is detachably connected to the U-shaped plate.

[0011] As a further embodiment of the present invention: the circumferential driving mechanism includes an arc-shaped sliding plate, a T-shaped slider, an internal gear ring, a first gear, a rotating shaft, and a transmission mechanism. The arc-shaped sliding plate is fitted to the outer ring of the collar, and the T-shaped slider is connected to the side of the arc-shaped sliding plate near the collar. The outer ring of the collar has a T-shaped groove for the T-shaped slider to slide in. The internal gear ring is coaxially disposed on the inner sidewall of the collar. The rotating shaft passes through the convex plate and is rotatably connected to the convex plate. The first gear is installed at one end of the rotating shaft and meshes with the internal gear ring. The transmission mechanism is installed between the rotating shaft and the U-shaped plate and is used to drive the rotating shaft to rotate.

[0012] As a further embodiment of the present invention: the transmission mechanism includes a motor, a first pivot pin, a second pivot pin, a second gear, a driving bevel gear, a driven bevel gear, a first sprocket, and a first chain. The motor is installed between the partition plate and the bottom of the U-shaped plate, and the output end of the motor is coaxially connected to one of the first pivot pins. The other first pivot pin is rotatably installed on the bottom of the U-shaped plate. The two second gears are respectively mounted on the two first pivot pins and are meshed. The two second pivot pins are rotatably installed on the bottom of the U-shaped plate. The first sprocket is respectively mounted on the first pivot pin and the second pivot pin and connected by the first chain. The driving bevel gear is installed at the bottom end of the second pivot pin, and the driven bevel gear is installed at the end of the rotating shaft and is meshed with the driving bevel gear.

[0013] As a further embodiment of the present invention: the lateral movement mechanism includes a third gear, a third pivot pin, a second sprocket, a second chain, a threaded drum, and a lead screw. The threaded drum is disposed between two support plates and is rotatably connected to the support plates. The lead screw is installed on the side wall of the support frame near the bottom end. The threaded drum is threadedly connected to the lead screw. The third pivot pin is located above the threaded drum and is rotatably connected to the support plate. Two second sprockets are respectively mounted on the threaded drum and the third pivot pin. The two second sprockets on the same side are connected by a second chain. The third gear is coaxially disposed at the end of the third pivot pin and meshes with an external gear ring.

[0014] As a further embodiment of the present invention: a convex ring is coaxially mounted on the side of the collar near the outer gear ring, and an annular groove corresponding to the convex ring is opened on one side of the outer gear ring, the convex ring extends into the annular groove, and the convex ring and the annular groove are rotatably connected.

[0015] As a further aspect of the present invention: the distance between the outer wall of the arc-shaped sliding plate and the center of the collar is less than the radius of the outer gear ring.

[0016] A second aspect of the present invention provides a coating method for building steel components, applied to the aforementioned coating equipment for building steel components, comprising the following steps:

[0017] Step 1: Place the I-beam with one side of the slot facing down on the fixed frame, and push the I-beam to adjust its position on the fixed frame so that one end of the I-beam is between the two collars;

[0018] Step 2: Pull the plastic film on the film roller to stick one end to the outer wall of the I-shaped steel near one end. Then start the circumferential drive mechanism to drive the two external gear rings to rotate synchronously along the collar. During the rotation of the external gear rings, the roller frame moves circumferentially along the collar, thereby wrapping the plastic film on the film roller around the outside of the I-shaped steel.

[0019] Step 3: During the rotation of the outer gear ring, the linkage lateral movement mechanism drives the moving parts to slide along the fixed frame, so that the roller frame moves along the length of the I-shaped steel during the circumferential movement, thereby evenly wrapping the plastic film around the outside of the I-shaped steel, thus completing the film coating of the I-shaped steel.

[0020] Step 4: After the I-shaped steel is coated, cut it and push it away from the coating mechanism until it separates from the fixing frame. Then the coated I-shaped steel can be removed.

[0021] The beneficial effects of this invention are:

[0022] 1. In this invention, the coordinated design of the fixed frame and the coating mechanism enables efficient coating of building steel components. The combination of the circumferential drive mechanism and the external gear ring in the coating mechanism gives the roller frame the ability to rotate circumferentially. When the circumferential drive mechanism drives the external gear ring to rotate, it is linked to the transverse moving mechanism, which facilitates the conversion of rotational motion into axial displacement of the moving parts, forming a composite motion mode of "rotational coating + synchronous feeding". This allows the film roller to achieve full circumferential coverage and continuous axial advancement during the process of wrapping the surface of the I-shaped steel, effectively solving the coating blind spot problem of traditional equipment. In addition, it facilitates continuous coating of I-shaped steel by the film roller. This structural design avoids the cumbersome process of manually adjusting the position or segmented operation in traditional coating equipment, greatly shortens the coating time, and helps to improve coating efficiency.

[0023] 2. In this invention, the web of the I-shaped steel component is supported by a fixing frame, so that after the I-shaped steel component is continuously coated, it can be separated from the fixing frame simply by pushing the I-shaped steel component. This not only facilitates the full coating of the I-shaped steel component, but also facilitates its unloading after coating.

[0024] 3. In this invention, the threaded engagement between the threaded drum and the lead screw in the transverse moving mechanism enables precise positioning of the moving parts. The setting of the traveling wheels further reduces the resistance during equipment operation and improves the moving efficiency. In addition, the film roller in the roller frame is detachably connected to the U-shaped plate, which facilitates the disassembly and replacement of the film roller as needed. During the film coating process, the uniform spreading and precise bonding of the film material not only effectively improves the film coating quality of the steel components, but also effectively reduces the waste of film material. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a perspective view of a coating device for building steel components according to the present invention;

[0027] Figure 2 This is a front view of a coating device for building steel components according to the present invention;

[0028] Figure 3 This is a perspective view of a film-coating device for building steel components according to the present invention during the film-coating process;

[0029] Figure 4 This is a perspective view of the coating mechanism in a coating equipment for building steel components according to the present invention;

[0030] Figure 5 This is a cross-sectional view of the coating mechanism in a coating device for building steel components according to the present invention;

[0031] Figure 6 yes Figure 5Enlarged view of section A;

[0032] Figure 7 This is a perspective view of the connection between the transmission mechanism and the roller frame in a film coating device for building steel components according to the present invention;

[0033] Figure 8 This is a perspective view of the connection between the lateral moving mechanism and the external gear ring in a film coating device for building steel components according to the present invention.

[0034] Figure 9 This is a perspective view of the connection between the arc-shaped sliding plate and the T-shaped slider in a film coating device for building steel components according to the present invention;

[0035] Figure 10 This is a perspective view of the connection between the collar and the moving part in a film coating device for building steel components according to the present invention.

[0036] In the diagram: 1. I-beam; 2. Fixed frame; 21. T-shaped guide rail; 22. Support frame; 3. Coating mechanism; 31. Film roller; 32. Roller frame; 321. U-shaped plate; 322. Partition plate; 323. Convex plate; 33. Moving part; 331. Support plate; 332. T-slot; 333. Traveling wheel; 34. Collar; 341. T-slot; 342. Convex ring; 35. Circumferential drive mechanism; 351. Arc-shaped sliding plate; 352. T-slide block; 353. Internal gear ring; 354. First gear; 55. Rotating shaft; 356. Transmission mechanism; 3561. Motor; 3562. First pivot pin; 3563. Second pivot pin; 3564. Second gear; 3565. Driving bevel gear; 3566. Driven bevel gear; 3567. First sprocket; 3568. First chain; 36. External gear ring; 361. Annular groove; 37. Lateral movement mechanism; 371. Third gear; 372. Third pivot pin; 373. Second sprocket; 374. Second chain; 375. Threaded drum; 376. Lead screw. Detailed Implementation

[0037] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0038] like Figures 1-10As shown, the present invention is a film coating device for building steel components, including a fixed frame 2 for supporting I-beams 1, and a film coating mechanism 3 for coating the I-beams 1 is slidably sleeved on the fixed frame 2. The film coating mechanism 3 includes a roller frame 32 with a film roller 31, a moving part 33, a collar 34, a circumferential drive mechanism 35, an outer gear ring 36, and a transverse movement mechanism 37. The two collars 34 are slidably connected to the fixed frame 2 through the moving part 33. The two outer gear rings 36 are coaxially installed on the opposite sides of the two collars 34. The roller frame 32 is installed between the two outer gear rings 36. The circumferential drive mechanism 35 is installed between the roller frame 32 and the collars 34, and the circumferential drive mechanism 35 is used to drive the outer gear ring 36 to rotate. The transverse movement mechanism 37 is installed between the outer gear ring 36 and the moving part 33. When the outer gear ring 36 rotates, it drives the moving part 33 to move through the transverse movement mechanism 37.

[0039] It should be noted that during use, the I-shaped steel 1 is placed on the fixed frame 2, with the web of the I-shaped steel 1 in contact with the top of the fixed frame 2, and one end of the I-shaped steel 1 positioned between the two collars 34. Then, one end of the plastic film wound on the film roller 31 is attached to the outer wall of the I-shaped steel 1 near one end. The circumferential drive mechanism 35 is activated to drive the outer gear ring 36 to rotate coaxially along the collar 34, thereby driving the roller frame 32 and the film roller 31 to revolve around the I-shaped steel 1. During the revolution, the plastic film can be circumferentially wrapped around the outside of the I-shaped steel 1. At the same time, the outer gear ring 36 is linked to the lateral movement mechanism 37 during rotation, driving the moving part 33 to slide along the fixed frame 2, thereby causing the collar 34 to move along the length of the I-shaped steel 1, so that the roller frame 32 moves laterally during the revolution, thus uniformly wrapping the plastic film around the outside of the I-shaped steel 1 to complete the film coating.

[0040] like Figures 2-3 As shown, the fixing frame 2 includes a T-shaped guide rail 21 and a "7"-shaped support frame 22. The side of the support frame 22 near the bottom is connected to the end of the T-shaped guide rail 21, and the horizontal part of the support frame 22 is used to support the I-shaped steel 1.

[0041] It should be noted that, in order to ensure the load-bearing capacity of the support frame 22, the support frame 22 in this embodiment is made of Q345 steel. The support frame 22 includes a horizontal part and a vertical part. The horizontal part of the support frame 22 not only facilitates the support of the I-shaped steel 1 to be coated, but also makes it easy for the I-shaped steel 1 to slide away from the vertical part of the support frame 22 after the coating is completed, so that it can slide off the horizontal part of the support frame 22, which is convenient for unloading. The T-shaped guide rail 21 facilitates the sliding guidance of the moving part 33 and improves stability.

[0042] like Figures 3-4As shown, the movable component 33 includes a support plate 331, a T-slot 332, and a traveling wheel 333. The top of the support plate 331 has an arc-shaped structure, and the top of the support plate 331 is connected to the bottom arc surface of the collar 34. The T-slot 332 is opened through the side wall of the support plate 331 near the bottom. The support plate 331 is slidably connected to the T-shaped guide rail 21 through the T-slot 332. The traveling wheel 333 is symmetrically installed at the bottom of the support plate 331.

[0043] It should be noted that the T-slot 332 not only facilitates the sliding of the support plate 331 along the T-shaped guide rail 21, but also makes it less likely for the support plate 331 to detach from the T-shaped guide rail 21 during the sliding process, which helps to improve the stability of the sliding. The traveling wheel 333 facilitates the bearing of the weight of the support plate 331, avoiding the generation of large friction due to the weight of the support plate 331 acting on the T-shaped guide rail 21, which helps to reduce the resistance encountered by the support plate 331 during the movement and improve the flexibility of movement.

[0044] like Figure 4 and Figure 8 As shown, the roller frame 32 includes a U-shaped plate 321, a partition plate 322, and a convex plate 323. The U-shaped plate 321 is installed between two external toothed rings 36, and the two convex plates 323 are symmetrically installed at the bottom of the U-shaped plate 321. The partition plate 322 is installed between the two opposing side walls of the U-shaped plate 321. The film roller 31 is located above the partition plate 322, and the film roller 31 is detachably connected to the U-shaped plate 321.

[0045] It should be noted that in this embodiment, a plastic film for coating (not shown in the figure) is wound on the film roller 31. When the plastic film on the film roller 31 is used up, the film roller 31 can be removed from the U-shaped plate 321. This application does not limit the disassembly method.

[0046] like Figures 4-8 As shown, the circumferential drive mechanism 35 includes an arc-shaped sliding plate 351, a T-shaped slider 352, an internal gear ring 353, a first gear 354, a rotating shaft 355, and a transmission mechanism 356. The arc-shaped sliding plate 351 is fitted to the outer ring of the collar 34. The T-shaped slider 352 is connected to the side of the arc-shaped sliding plate 351 near the collar 34. The outer ring of the collar 34 has a T-shaped groove 341 for the T-shaped slider 352 to slide. The internal gear ring 353 is coaxially disposed on the inner side wall of the collar 34. The rotating shaft 355 passes through the convex plate 323 and is rotatably connected to the convex plate 323. The first gear 354 is installed at one end of the rotating shaft 355 and meshes with the internal gear ring 353. The transmission mechanism 356 is installed between the rotating shaft 355 and the U-shaped plate 321 and is used to drive the rotating shaft 355 to rotate.

[0047] It should be noted that in this embodiment, the rotating shaft 355 and the convex plate 323 are rotatably connected by the first bearing. The T-shaped slider 352 and the T-shaped annular groove 341 are used to make the arc-shaped sliding plate 351 fit against the outer ring of the collar 34 for circumferential sliding. Moreover, under the cooperation of the T-shaped annular groove 341 and the T-shaped slider 352, the arc-shaped sliding plate 351 will not detach from the collar 34. In order to avoid the arc-shaped sliding plate 351 being obstructed during the circumferential sliding along the collar 34, in this embodiment, the top of the support plate 331 is connected to the bottom of the side of the collar 34 away from the outer toothed ring 36. That is to say, the plane where the support plate 331 is located will not intersect with the plane of the collar 34 circumferentially rotating.

[0048] The transmission mechanism 356 on the roller frame 32 is activated to facilitate the synchronous and unidirectional rotation of the rotating shafts 355 on the two protruding plates 323. When the rotating shafts 355 rotate, they drive the first gear 354, which meshes with the internal gear ring 353, to rotate. Since the rotational freedom of the internal gear ring 353 is restricted by the collar 34, it cannot rotate. Therefore, when the first gear 354 rotates, it will drive the roller frame 32 as a whole to revolve around the internal gear ring 353. In other words, the film roller 31 on the roller frame 32 can move around the I-shaped steel 1. During film coating, one end of the plastic film wound on the film roller 31 is attached to the outer wall of the I-shaped steel 1. As the film roller 31 moves around the I-shaped steel 1, the plastic film can adaptively wrap around the outer side of the I-shaped steel 1.

[0049] like Figure 5 and Figure 8 As shown, the transmission mechanism 356 includes a motor 3561, a first pivot pin 3562, a second pivot pin 3563, a second gear 3564, a driving bevel gear 3565, a driven bevel gear 3566, a first sprocket 3567, and a first chain 3568. The motor 3561 is mounted between the partition plate 322 and the bottom of the U-shaped plate 321, and the output end of the motor 3561 is coaxially connected to one of the first pivot pins 3562. The other first pivot pin 3562 is rotatably mounted on the bottom of the U-shaped plate 321. Two second gears 3564 are also present. 64 is respectively fitted on two first pivot pins 3562, and two second gears 3564 are meshed together. Two second pivot pins 3563 are rotatably mounted on the bottom of U-shaped plate 321. First sprockets 3567 are respectively fitted on the first pivot pins 3562 and the second pivot pins 3563, and are connected by a first chain 3568. The driving bevel gear 3565 is mounted on the bottom end of the second pivot pin 3563, and the driven bevel gear 3566 is mounted on the end of the rotating shaft 355, and the driven bevel gear 3566 is meshed with the driving bevel gear 3565.

[0050] It should be noted that in this embodiment, the first pivot pin 3562, which is not connected to the motor 3561, and the two second pivot pins 3563 are rotatably connected to the bottom of the U-shaped plate 321 via bearing seats. When the motor 3561 starts and drives the first pivot pin 3562, which is coaxially connected to its output end, to rotate, since two adjacent first pivot pins 3562 are equipped with meshing second gears 3564, the other first pivot pin 3562 will rotate synchronously in the opposite direction. That is to say, when the motor 3561 is running, the two first pivot pins 3562 will rotate synchronously in the opposite direction, and each first pivot pin 3562 and its corresponding second pivot pin 3563 will rotate in the opposite direction. The first sprocket 3567 and the first chain 3568 drive the two second pivot pins 3563 to rotate synchronously in opposite directions when the motor 3561 moves. When the second pivot pins 3563 rotate, the driving bevel gear 3565 drives the shaft 355 connected to the driven bevel gear 3566 to rotate. Since the two driven bevel gears 3566 at the ends of the two shafts 355 are symmetrically distributed, when the two second pivot pins 3563 rotate synchronously in opposite directions, they can drive the two shafts 355 to rotate synchronously in the same direction. The shafts 355 drive the first gear 354 to revolve around the internal gear ring 353, thus realizing the circumferential movement of the roller frame 32.

[0051] like Figure 3 and Figure 9 As shown, the lateral movement mechanism 37 includes a third gear 371, a third pivot pin 372, a second sprocket 373, a second chain 374, a threaded drum 375, and a lead screw 376. The threaded drum 375 is disposed between two support plates 331 and is rotatably connected to the support plates 331. The lead screw 376 is installed on the side wall of the support frame 22 near the bottom end. The threaded drum 375 is threadedly connected to the lead screw 376. The third pivot pin 372 is located above the threaded drum 375 and is rotatably connected to the support plate 331. Two second sprockets 373 are respectively fitted on the threaded drum 375 and the third pivot pin 372. The two second sprockets 373 on the same side are connected by the second chain 374. The third gear 371 is coaxially disposed at the end of the third pivot pin 372 and meshes with the external gear ring 36.

[0052] It should be noted that in this embodiment, the third pivot pin 372 is rotatably connected to the support plate 331 via the second bearing. When the roller frame 32 moves circumferentially, it drives the outer gear ring 36 to rotate coaxially along the collar 34. Since the outer gear ring 36 meshes with the third gear 371 at the end of the third pivot pin 372, the rotation of the outer gear ring 36 drives the third pivot pin 372 connected to the third gear 371 to rotate. Through the transmission action of the second sprocket 373 and the second chain 374, the third pivot pin 372... It will drive the threaded drum 375 to rotate synchronously. Since the rotational freedom of the lead screw 376 is limited, the threaded drum 375 will move along the length of the lead screw 376 when it rotates. When the threaded drum 375 moves, it will drive the moving part 33 to travel along the length of the T-shaped guide rail 21, thereby causing the collar 34 to drive the outer toothed ring 36 and the roller frame 32 to move horizontally. In conjunction with the circumferential movement of the roller frame 32, the plastic film can be evenly wrapped on the outer surface of the I-shaped steel 1.

[0053] It should be added that, in this embodiment, the transmission ratio between the external gear ring 36 and the third gear 371 needs to meet the film coating requirements. That is, when the external gear ring 36 drives the roller frame 32 to rotate once, the displacement generated by the third gear 371 driving the threaded drum 375 to rotate during this process cannot be greater than the width of the plastic film on the film roller 31. This ensures that the outer surface of the I-shaped steel 1 can be fully wrapped during the film coating process. In addition, during the film coating process, some plastic film can be reserved at both ends of the I-shaped steel 1. After the outer surface of the I-shaped steel 1 is covered, pressure is applied to the plastic film extending from both ends of the I-shaped steel 1 so that both ends of the I-shaped steel 1 can also be covered by the plastic film. Finally, the plastic film after the pressure is applied to both ends is bound with film. This not only ensures that the I-shaped steel 1 can be fully wrapped by the plastic film, but also makes the plastic film after film coating less likely to fall off.

[0054] like Figures 9-10 As shown, a convex ring 342 is coaxially mounted on the side of the collar 34 near the outer gear ring 36. An annular groove 361 corresponding to the convex ring 342 is opened on one side of the outer gear ring 36. The convex ring 342 extends into the annular groove 361 and is rotatably connected to the annular groove 361.

[0055] It should be noted that in this embodiment, the annular groove 361 and the outer gear ring 36 are coaxially arranged, and the convex ring 342 and the annular groove 361 are rotatably connected by a ball bearing. This not only does not affect the rotation of the outer gear ring 36, but also helps to improve the stability of the rotation of the outer gear ring 36.

[0056] like Figure 4 and Figure 9 As shown, the distance between the outer wall of the arc-shaped slide plate 351 and the axis of the collar 34 is less than the radius of the outer gear ring 36.

[0057] It should be noted that since the arc-shaped slide plate 351 slides along the outer ring of the collar 34, when the distance between the outer wall of the arc-shaped slide plate 351 and the axis of the collar 34 is less than the radius of the outer gear ring 36, it can be ensured that the arc-shaped slide plate 351 will not collide with the third pivot pin 372 when it slides to the bottom of the collar 34, thereby ensuring the normal operation of the equipment. In addition, in this embodiment, the vertical distance between the top of the roller frame 32 and the axis of the outer gear ring 36 is less than the vertical distance between the threaded drum 375 and the axis of the outer gear ring 36. That is to say, the roller frame 32 will not collide with the threaded drum 375 when it is circumferentially revolving.

[0058] This invention provides a method for coating steel structural members, comprising the following steps:

[0059] Step 1: Place the I-shaped steel 1 with one side slot facing down on the fixed frame 2, and push the I-shaped steel 1 to adjust its position on the fixed frame 2 so that one end of the I-shaped steel 1 is located between the two collars 34.

[0060] Step 2: Pull the plastic film on the film roller 31 to stick one end to the outer wall of the I-shaped steel 1 near one end. Then start the circumferential drive mechanism 35 to drive the two outer gear rings 36 to rotate synchronously along the collar 34. During the rotation of the outer gear rings 36, the roller frame 32 is driven to move circumferentially along the collar 34, thereby wrapping the plastic film on the film roller 31 circumferentially around the outside of the I-shaped steel 1.

[0061] Step 3: During the rotation of the outer gear ring 36, the linkage with the transverse moving mechanism 37 drives the moving part 33 to slide along the fixed frame 2, so that the roller frame 32 moves along the length direction of the I-shaped steel 1 during the circumferential movement, thereby evenly wrapping the plastic film around the outside of the I-shaped steel 1, thus completing the film coating of the I-shaped steel 1.

[0062] Step 4: After the I-shaped steel 1 is coated, cut it and push the I-shaped steel 1 away from the coating mechanism 3 until the I-shaped steel 1 is separated from the fixing frame 2. Then the coated I-shaped steel 1 can be removed.

[0063] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A film-coating device for building steel components, comprising a fixing frame (2) for supporting I-beams (1), characterized in that, The fixing frame (2) is slidably fitted with a film-coating mechanism (3) for coating the I-shaped steel (1). The film coating mechanism (3) includes a roller frame (32) with a film roller (31), a moving part (33), a collar (34), a circumferential drive mechanism (35), an outer gear ring (36), and a transverse moving mechanism (37). The two collars (34) are slidably connected to the fixed frame (2) through the moving part (33). The two outer gear rings (36) are coaxially installed on opposite sides of the two collars (34). The roller frame (32) is installed between the two outer gear rings (36). The circumferential drive mechanism (35) is installed between the roller frame (32) and the collar (34), and the circumferential drive mechanism (35) is used to drive the outer gear ring (36) to rotate. The transverse moving mechanism (37) is installed between the outer gear ring (36) and the moving part (33). When the outer gear ring (36) rotates, it drives the moving part (33) to move through the transverse moving mechanism (37). The circumferential drive mechanism (35) includes an arc-shaped sliding plate (351), a T-shaped slider (352), an internal gear ring (353), a first gear (354), a rotating shaft (355), and a transmission mechanism (356). The arc-shaped sliding plate (351) is fitted onto the outer ring of the collar (34). The T-shaped slider (352) is connected to the side of the arc-shaped sliding plate (351) near the collar (34). The outer ring of the collar (34) has a T-shaped groove (341) for the T-shaped slider (352) to slide. The internal gear ring... (353) is coaxially arranged on the inner side wall of the collar (34). The rotating shaft (355) passes through the convex plate (323) and is rotatably connected to the convex plate (323). The first gear (354) is installed at one end of the rotating shaft (355) and meshes with the internal gear ring (353). The transmission mechanism (356) is installed between the rotating shaft (355) and the U-shaped plate (321) and is used to drive the rotating shaft (355) to rotate. The lateral movement mechanism (37) includes a third gear (371), a third pivot pin (372), a second sprocket (373), a second chain (374), a threaded drum (375), and a lead screw (376). The threaded drum (375) is disposed between two support plates (331) and is rotatably connected to the support plates (331). The lead screw (376) is installed on the side wall of the support frame (22) near the bottom end. The threaded drum (375) and the lead screw (376) are threaded together. The third pivot pin (372) is located above the threaded drum (375) and is rotatably connected to the support plate (331). The two second sprockets (373) are respectively fitted on the threaded drum (375) and the third pivot pin (372). The two second sprockets (373) on the same side are connected by a second chain (374). The third gear (371) is coaxially arranged at the end of the third pivot pin (372) and is meshed with the external gear ring (36). A convex ring (342) is coaxially mounted on the side of the collar (34) near the outer gear ring (36). An annular groove (361) corresponding to the convex ring (342) is opened on one side of the outer gear ring (36). The convex ring (342) extends into the annular groove (361) and the convex ring (342) is rotatably connected to the annular groove (361).

2. The coating equipment for building steel components according to claim 1, characterized in that, The fixing frame (2) includes a T-shaped guide rail (21) and a "7"-shaped support frame (22). The side of the support frame (22) near the bottom is connected to the end of the T-shaped guide rail (21). The horizontal part of the support frame (22) is used to support the I-shaped steel (1).

3. A film-coating device for building steel components according to claim 2, characterized in that, The moving part (33) includes a support plate (331), a T-slot (332) and a traveling wheel (333). The top of the support plate (331) is an arc-shaped structure, and the top of the support plate (331) is connected to the bottom arc surface of the collar (34). The T-slot (332) is opened through the side wall of the support plate (331) near the bottom. The support plate (331) is slidably connected to the T-shaped guide rail (21) through the T-slot (332). The traveling wheel (333) is symmetrically installed on the bottom of the support plate (331).

4. A film-coating device for building steel components according to claim 1, characterized in that, The roller frame (32) includes a U-shaped plate (321), a partition plate (322), and a convex plate (323). The U-shaped plate (321) is installed between two external toothed rings (36), and the two convex plates (323) are symmetrically installed at the bottom of the U-shaped plate (321). The partition plate (322) is installed between the two opposing side walls of the U-shaped plate (321). The film roller (31) is located above the partition plate (322), and the film roller (31) is detachably connected to the U-shaped plate (321).

5. A film-coating device for building steel components according to claim 1, characterized in that, The transmission mechanism (356) includes a motor (3561), a first pivot pin (3562), a second pivot pin (3563), a second gear (3564), a driving bevel gear (3565), a driven bevel gear (3566), a first sprocket (3567), and a first chain (3568). The motor (3561) is installed between the partition plate (322) and the bottom of the U-shaped plate (321), and the output end of the motor (3561) is coaxially connected to one of the first pivot pins (3562). The other first pivot pin (3562) is rotatably installed on the bottom of the U-shaped plate (321). The two second gears (3564) are connected to the first chain (3565). 4) The first sprocket (3567) is respectively mounted on the two first pivot pins (3562) and the two second gears (3564) are meshed. The two second pivot pins (3563) are rotatably mounted on the bottom of the U-shaped plate (321). The first sprocket (3567) is respectively mounted on the first pivot pin (3562) and the second pivot pin (3563) and connected by the first chain (3568). The driving bevel gear (3565) is mounted on the bottom end of the second pivot pin (3563). The driven bevel gear (3566) is mounted on the end of the rotating shaft (355) and the driven bevel gear (3566) is meshed with the driving bevel gear (3565).

6. A film-coating device for building steel components according to claim 1, characterized in that, The distance between the outer wall of the arc-shaped sliding plate (351) and the axis of the collar (34) is less than the radius of the outer gear ring (36).

7. A coating method for building steel components, applied to the coating equipment for building steel components according to any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Place the I-shaped steel (1) with one side slot facing down and place it on the fixed frame (2). Push the I-shaped steel (1) to adjust its position on the fixed frame (2) so that one end of the I-shaped steel (1) is between the two collars (34). Step 2: Pull the plastic film on the film roller (31) to stick one end to the outer wall of the I-shaped steel (1) near one end. Then start the circumferential drive mechanism (35) to drive the two external gear rings (36) to rotate synchronously along the collar (34). During the rotation of the external gear rings (36), the roller frame (32) is driven to move circumferentially along the collar (34), thereby wrapping the plastic film on the film roller (31) around the outside of the I-shaped steel (1). Step 3: During the rotation of the outer gear ring (36), the linkage lateral movement mechanism (37) is activated, which drives the moving part (33) to slide along the fixed frame (2), so that the roller frame (32) moves along the length direction of the I-shaped steel (1) during the circumferential movement, thereby uniformly wrapping the plastic film around the outside of the I-shaped steel (1) and completing the film coating of the I-shaped steel (1). Step 4: After the I-shaped steel (1) is coated, cut it and push the I-shaped steel (1) away from the coating mechanism (3) until the I-shaped steel (1) is separated from the fixing frame (2). Then the coated I-shaped steel (1) can be removed.

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