Ship section closure weld surface treatment device

Abstract

This invention discloses a surface treatment device for welded seams in ship section closures. The device includes a main body with a weld grinding disc. Two surface grinding discs are located on either side of the weld grinding disc, and a coating grinding disc is located on the side of each surface grinding disc furthest from the weld grinding disc. As the main body moves along the welded section area of ​​the ship, the weld grinding disc faces the weld section, the coating grinding disc faces the coating on the ship wall, and the surface grinding disc faces the surface between the weld and the coating. The grinding areas of the weld grinding disc and the coating grinding disc partially cover the surface between the weld and the coating. The coating grinding disc is inclined, with the side closer to the coating higher than the side closer to the weld. After the coating grinding disc grinds the edge of the ship wall coating, the edge of the ship wall coating is sloped. This invention provides excellent surface treatment for the welded sections of a ship.

Description

Technical Field

[0001] This invention relates to the field of ship surface treatment, and more particularly to a device for surface treatment of weld seams at the joint of ship sections. Background Technology

[0002] When constructing ships in sections, the sections themselves are painted, but the welds between sections must be left unpainted at a certain distance. Generally, only a weldable shop primer is applied. After the sections are joined and welded together, the welds and surrounding areas are then surface-treated. However, because the welding area of ​​the sections is small, sandblasting can damage the surrounding normal coating, and traditional grinding equipment is not effective at grinding the welding area. Therefore, a new surface treatment device for the welds at the joint of ship sections is needed. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the prior art, the present invention provides a surface treatment device for the weld seam of ship section closure, which has a good surface treatment effect on the welded area of ​​ship sections.

[0004] Technical solution: To achieve the above objectives, the surface treatment device for weld seams of ship section closure of the present invention includes a device body, a weld seam grinding disc is provided on the device body, a ship surface grinding disc is provided on both sides of the weld seam grinding disc, and a coating grinding disc is provided on the side of the two ship surface grinding discs away from the weld seam grinding disc. As the device moves along the segmented welding areas of the ship, the weld grinding disc faces the segmented weld, the coating grinding disc faces the coating on the ship's wall, and the ship surface grinding disc faces the ship surface between the weld and the coating. The grinding areas of the weld grinding disc and the coating grinding disc partially cover the ship surface between the weld and the coating. The coating grinding disc is tilted, with the side closer to the coating higher than the side closer to the weld. The coating grinding disc rotates to perform grinding. The coating grinding disc is driven to rotate by an inclined shaft, maintaining its tilt during rotation. The device body is equipped with a rotating base, and the inclined shaft is mounted on the rotating base. The rotating base can reciprocate to change the tilt of the inclined shaft and the coating grinding disc. The angle is such that the edge of the ship wall coating forms a sloping edge with an undulating surface after being polished by the coating polishing disc; the weld polishing disc rotates for polishing; the rotating shaft of the weld polishing disc is mounted on a rotating seat, and when the rotating seat rotates back and forth, it drives the weld polishing disc to oscillate back and forth on the weld, and during the oscillation of the weld polishing disc, the polishing area of ​​the weld polishing disc always covers the weld; the ship surface polishing disc rotates for polishing, and the edge of the ship surface polishing disc is close to the weld and the coating but does not contact them; the weld polishing disc is placed in front of the ship surface polishing disc, and the coating polishing disc is placed behind the ship surface polishing disc, so that the ship surface between the weld and the coating is polished by the weld polishing disc, the ship surface polishing disc, and the coating polishing disc in sequence.

[0005] Furthermore, the two aforementioned ship deck grinding discs are symmetrically arranged on both sides of the weld grinding disc, and the two aforementioned coating grinding discs are symmetrically arranged on both sides of the weld grinding disc.

[0006] Furthermore, the device body is a wall-climbing trolley with magnetic wheels. The device body is attracted to the ship wall by the magnetic wheels and moves along the segmented welding area of ​​the ship.

[0007] Furthermore, the weld grinding disc is a wire disc, the ship deck grinding disc is a red steel paper sanding disc, and the coating grinding disc is a paper sanding disc.

[0008] Beneficial effects: The surface treatment device for the weld seam of the ship section joining of the present invention has the following beneficial effects:

[0009] 1) It is equipped with multiple grinding discs, which are used to perform targeted surface treatment on the welds, coatings, and the ship surface between the welds and coatings, thereby achieving better surface treatment results.

[0010] 2) The coating grinding disc is tilted, and the reciprocating rotation of the rotating seat can change the tilt angle of the tilting shaft and the coating grinding disc, so that the edge of the ship wall coating forms a sloping edge with undulating curved surface after being ground by the coating grinding disc; after the rust removal is completed in the welding area of ​​the ship section, the repaired coating is combined with the original coating through the sloping edge with undulating curved surface, so that the bonding surface between the new and old coatings is larger and the bonding effect is better.

[0011] 3) During the reciprocating rotation of the rotating seat, the weld grinding disc also oscillates back and forth on the weld. Compared with the weld grinding disc that moves straight forward, the reciprocating oscillation of the weld grinding disc will have a better grinding and cleaning effect on the weld. Attached Figure Description

[0012] Appendix Figure 1 A schematic diagram showing the relative positions of the ship's deck grinding disc and the welding areas of the ship sections.

[0013] Appendix Figure 2 A schematic diagram of the coating grinding disc and the weld grinding disc on the rotating base;

[0014] Appendix Figure 3 This is a schematic diagram showing the arrangement of coating grinding discs, ship deck grinding discs, and weld grinding discs. Detailed Implementation

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] As attached Figures 1 to 3The aforementioned surface treatment device for weld seams in ship section assembly includes a device body, on which a weld seam grinding disc 1 is mounted. A ship deck grinding disc 2 is mounted on each side of the weld seam grinding disc 1, and a coating grinding disc 3 is mounted on the side of each ship deck grinding disc 2 furthest from the weld seam grinding disc 1, as shown in the attached figure. Figure 3 As shown, the main body of the device is provided with a coating polishing disc 3, a ship surface polishing disc 2, a weld polishing disc 1, a ship surface polishing disc 2 and a coating polishing disc 3 in sequence from left to right.

[0017] The welded sections of the ship are shown in the attached figure. Figure 1 As shown, there is a transitional deck area between weld 4 and the coatings 5 ​​on both sides. This transitional deck area has no coating 5, or is only coated with a weldable shop primer. As the device moves along the segmented welding area of ​​the ship, the weld grinding disc 1 faces the segmented weld 4 and grinds the weld 4. The diameter of the weld grinding disc 1 is larger than the width of the weld 4, so that the grinding area of ​​the weld grinding disc 1 can completely cover the weld 4, and grind the edges of the uncoated areas adjacent to the weld 4 to a certain extent.

[0018] The coating polishing disc 3 is positioned opposite the coating 5 on the ship's wall, and it polishes the coating 5. During the application of coating 5 on ships, materials such as masking tape are typically used to protect the weld 4, leaving a portion of the area around the weld 4 without coating 5. Therefore, as shown in the attached... Figure 1 As shown, there is a gradient between the coating 5 and the ship surface around the weld 4, so the edge of the coating 5 needs to be ground. Otherwise, after the rust removal in the weld 4 area is completed, the subsequent repair coating 5 cannot be well bonded with the original coating 5.

[0019] The surface grinding disc 2 faces the surface between weld 4 and coating 5. It grinds the area between weld 4 and coating 5 where the coating 5 is not present, removing rust and grinding the steel to achieve a suitable roughness for stable bonding of the newly applied coating 5. Because the diameter of the weld grinding disc 1 is larger than the width of weld 4, its grinding area partially covers the surface between weld 4 and coating 5. Similarly, because the coating grinding disc 3 grinds the edges of coating 5, its grinding area also partially covers the surface between weld 4 and coating 5.

[0020] The coating polishing disc 3 is inclined, with the side of the coating polishing disc 3 closer to the coating 5 being slightly higher than the side closer to the weld 4. (See attached image) Figure 2As shown, after the coating polishing disc 3 polishes the edge of the ship wall coating 5, the edge of the ship wall coating 5 is sloped. After the edge of the old coating 5 is polished into a sloped shape, the new coating 5 that is subsequently repaired can be combined with the sloped edge of the old coating 5. Since the sloped edge has a larger bonding area, the bonding effect between the new coating 5 and the old coating 5 will be better.

[0021] The coating polishing disc 3 rotates for polishing, resulting in a better polishing effect. The coating polishing disc 3 is driven to rotate by an inclined shaft 7, which is driven by a motor, so that the coating polishing disc 3 remains tilted during rotation.

[0022] The device body is equipped with a rotating base 6, which is hinged to the device body, allowing the rotating base 6 to rotate relative to the device body. An inclined rotating shaft 7 is mounted on the rotating base 6, and a motor driving the inclined rotating shaft 7 is also mounted on the rotating base 6. The motor driving the rotating base 6 allows it to reciprocate relative to the device body. Because the inclined rotating shaft 7 is mounted on the rotating base 6, the tilt angle of the inclined rotating shaft 7 and the coating polishing disc 3 continuously changes as the rotating base 6 reciprocates. This results in the edge of the ship wall coating 5 forming a sloping edge with undulating curves after polishing by the coating polishing disc 3. Compared to a flat surface, a sloping shape with undulating curves has a larger surface area, thus achieving a better bonding effect when the new coating 5 and the old coating 5 are combined through the sloping edge with undulating curves.

[0023] The weld grinding disc 1 rotates for grinding. The rotating shaft of the weld grinding disc 1 is mounted on a rotating base 6, and the motor driving the rotation of the weld grinding disc 1 is also mounted on the rotating base 6. As the rotating base 6 reciprocates, it causes the weld grinding disc 1 to oscillate back and forth on the weld 4. During this oscillation, the grinding area of ​​the weld grinding disc 1 always covers the weld 4, ensuring that the weld grinding disc 1 can continuously grind the weld 4 during the oscillation process. Compared to a weld grinding disc 1 that moves linearly forward, the reciprocating oscillating weld grinding disc 1 has an additional dimension of motion, resulting in a better grinding and cleaning effect on the weld 4.

[0024] In one embodiment, the line connecting the center of the weld grinding disc 1 and the centers of the two coating grinding discs 3 forms an isosceles triangle, and the rotation center of the rotating seat 6 is located at the center of the isosceles triangle.

[0025] The grinding disc 2 rotates for grinding. The rotating shaft and motor that drive the grinding disc 2 to rotate are directly mounted on the main body of the device, so the grinding disc 2 will not wobble with the rotation of the rotating seat 6. The edge of the grinding disc 2 is close to the weld 4 and the coating 5 but does not contact them. The weld 4 has a certain height, so the grinding disc 2 cannot touch the weld 4. When the grinding disc 2 touches the coating 5, it will completely remove the coating 5, rather than just creating a slope, so the grinding disc 2 cannot touch the coating 5.

[0026] As attached Figure 3 As shown, with the direction of travel of the device body as the front, the weld grinding disc 1 is positioned in front of the deck grinding disc 2, and the coating grinding disc 3 is positioned behind the deck grinding disc 2. The weld grinding disc 1, deck grinding disc 2, and coating grinding disc 3 are arranged in a V-shape, so that the deck between the weld 4 and the coating 5 is successively ground by the weld grinding disc 1, deck grinding disc 2, and coating grinding disc 3, resulting in a more detailed grinding of the deck between the weld 4 and the coating 5. Because the weld 4 has a certain height, under normal circumstances, the weld grinding disc 1 only has a slight grinding effect on the deck between the weld 4 and the coating 5.

[0027] As attached Figure 1 As shown, under normal circumstances, the uncoated areas 5 on both sides of the weld 4 are symmetrical. Correspondingly, the two surface grinding discs 2 are symmetrically arranged on both sides of the weld grinding disc 1, and the two coated grinding discs 3 are symmetrically arranged on both sides of the weld grinding disc 1. In practical applications, the positions of the coated grinding discs 3 and the surface grinding discs 2 on the device body can be finely adjusted to accommodate welds 4 of different widths and uncoated surfaces. The disc sizes of the coated grinding discs 3, the surface grinding discs 2, and the weld grinding discs 1 can also be replaced and adjusted accordingly.

[0028] The device body is a wall-climbing trolley with magnetic wheels. The device body is attracted to the ship wall by the magnetic wheels, which roll on the ship wall, allowing the device body to travel along the segmented welding areas of the ship.

[0029] In practical applications, experiments have shown that the preferred material for the weld grinding disc 1 is a wire disc, which can effectively remove the rust and pitting on the surface of the weld 4; the preferred material for the ship deck grinding disc 2 is a red steel paper sanding disc, which can grind the steel on the hull surface, remove the rust and ensure the roughness; and the preferred material for the coating grinding disc 3 is a paper sanding disc, which can grind a slope at the edge of the coating 5 when grinding the coating 5, so that the new coating 5 can bond well with the old coating 5.

[0030] When the ship section welding seam surface treatment device of the present invention is working, the device body moves along the section welding area of ​​the ship and grinds the coating 5, the weld 4 and the ship surface between the coating 5 and the weld 4 by passing the coating grinding disc 3, the weld grinding disc 1 and the ship surface grinding disc 2 respectively. It can grind the edge of the coating 5 to form a sloping edge with an undulating surface, which is beneficial to the bonding of the new coating 5 with the old coating 5.

[0031] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A surface treatment device for weld seams in the closure of ship sections, characterized in that: The device includes a main body, on which a weld grinding disc (1) is provided. A ship surface grinding disc (2) is provided on each side of the weld grinding disc (1), and a coating grinding disc (3) is provided on the side of the two ship surface grinding discs (2) away from the weld grinding disc (1). When the device body moves along the segmented welding area of ​​the ship, the weld grinding disc (1) is opposite to the segmented weld (4), the coating grinding disc (3) is opposite to the coating (5) on the ship wall, and the ship surface grinding disc (2) is opposite to the ship surface between the weld (4) and the coating (5). The grinding areas of the weld grinding disc (1) and the coating grinding disc (3) partially cover the ship surface between the weld (4) and the coating (5). The coating polishing disc (3) is inclined, with the side of the coating polishing disc (3) closer to the coating (5) higher than the side closer to the weld (4); the coating polishing disc (3) rotates for polishing; the coating polishing disc (3) is driven to rotate by the inclined rotating shaft (7), so that the coating polishing disc (3) remains inclined when rotating; the device body is provided with a rotating seat (6), and the inclined rotating shaft (7) is installed on the rotating seat (6); the rotating seat (6) can reciprocate to change the inclination angle of the inclined rotating shaft (7) and the coating polishing disc (3), so that the edge of the ship wall coating (5) forms a sloping edge with undulating curved surface after being polished by the coating polishing disc (3); The weld grinding disc (1) rotates and grinds; the rotating shaft of the weld grinding disc (1) is installed on the rotating seat (6). When the rotating seat (6) rotates back and forth, it drives the weld grinding disc (1) to shake back and forth on the weld (4). During the shaking process of the weld grinding disc (1), the grinding area of ​​the weld grinding disc (1) always covers the weld (4). The ship surface grinding disc (2) rotates and grinds, and the edge of the ship surface grinding disc (2) is close to but does not contact the weld (4) and the coating (5); the weld grinding disc (1) is set in front of the ship surface grinding disc (2), and the coating grinding disc (3) is set behind the ship surface grinding disc (2), so that the ship surface between the weld (4) and the coating (5) is successively ground by the weld grinding disc (1), the ship surface grinding disc (2) and the coating grinding disc (3).

2. The surface treatment device for the weld seam of ship section assembly according to claim 1, characterized in that: The two surface grinding discs (2) are symmetrically arranged on both sides of the weld grinding disc (1), and the two coating grinding discs (3) are symmetrically arranged on both sides of the weld grinding disc (1).

3. The surface treatment device for the weld seam of ship section assembly according to claim 1, characterized in that: The device body is a wall-climbing trolley with magnetic wheels. The device body is attracted to the wall of the ship by the magnetic wheels and moves along the section welding area of ​​the ship.

4. The surface treatment device for the weld seam of ship section assembly according to claim 1, characterized in that: The weld grinding disc (1) is a wire disc, the ship deck grinding disc (2) is a red steel paper sand disc, and the coating grinding disc (3) is a paper sand disc.

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