JP7397231B1 - Tank weld line inspection pretreatment equipment - Google Patents

Abstract

[Purpose] Tank weld line inspection can significantly streamline the work of polishing or cleaning the surface side of weld lines, which is performed as a pretreatment for inspection of weld lines on the tank floor or inner circumference of the tank. Provides a pretreatment device. [Structure] The surface side of the one edge side area is rotated or vibrated in contact with an area on the one edge side of the weld line that is at least half in the width direction of the weld line. a first brush that polishes or cleans the weld line; An inspection pretreatment device comprising: a second brush that polishes or cleans the surface side of the other edge region by rotating or vibrating; and a moving section that moves each of the brushes along the welding line. . [Selection diagram] Figure 1

Description

The present invention relates to a tank weld line inspection pretreatment device for performing inspection pretreatment on weld lines on a tank floor surface or an inner circumferential edge of a tank.

Conventionally, for tanks installed in factories, etc., as shown in FIG. For example, when a weld line 23 on the inner peripheral edge of a circular tank is inspected by magnetic particle testing or the like, the surface of each weld line 22, 23 is polished or polished as a pretreatment for the inspection. Cleaning is performed to remove dirt, etc. Conventionally, such processing has been carried out by, for example, an operator holding a polishing tool (see FIG. 8(a)) and applying a brush (see FIG. 8(b)) attached to the polishing tool to the weld lines 22, 23. This was done by applying it to the surface and polishing or cleaning it.

Japanese Patent Application Publication No. 5-68917

However, the method in which the operator holds a polishing tool in his hand and applies a brush to the surfaces of the weld lines 22 and 23 to polish or clean the surfaces is extremely inefficient.

The present invention has been made by focusing on the problems of the prior art as described above, and is aimed at improving the surface side of the weld line, which is performed as a pretreatment for inspection of the weld line on the tank floor or the inner peripheral edge of the tank. An object of the present invention is to provide a tank weld line inspection pretreatment device that can greatly improve the efficiency of polishing or cleaning work.

The tank weld line inspection pre-treatment device according to the present invention to solve such problems is a weld line inspection pre-treatment device that performs pre-treatment for inspecting the weld line present on the tank floor or the inner peripheral edge of the tank. By rotating or vibrating while moving along the welding line and contacting an area on one edge side of the welding line that is at least half or more in the width direction of the welding line. a first brush that polishes or cleans the surface side of the one edge side region, and moving along the welding line while maintaining a constant distance from the first brush behind the first brush; An area on the other edge side of the weld line that is opposite to the one edge and is at least half or more in the width direction of the weld line (partially the area that the first brush polishes or cleans) a second brush that polishes or cleans the surface side of the other edge side area by rotating or vibrating in contact with the first brush and the first brush; and a moving part that moves the second brush along the welding line.

Further, in the tank weld line inspection pretreatment device according to the present invention, the first brush and the second brush polish or clean the weld line formed between the plurality of flat plates forming the tank floor surface. Each angle is approximately 10 to 45 degrees to the tank floor so that the closer you get to the center of the weld line in the width direction (the center between both edges of the weld line in the width direction), the closer you get to the tank floor when viewed from the side. may be arranged so as to be inclined by

Further, in the tank weld line inspection pretreatment device according to the present invention, the first brush and the second brush polish or clean the weld line formed at the inner peripheral edge of the tank between the tank floor surface and the tank side surface. The moving part includes a first moving frame that moves the first brush while facing the welding line and the tank floor surface (furthermore, while maintaining a constant distance from these); a second movable frame for moving the second brush while facing the welding line and the side surface of the tank (while maintaining a constant distance therefrom); and the first movable frame and the second movable frame. and a connection part that connects them so that the angle between them in a direction parallel to the tank floor surface can be changed (adjusted).

Further, in the present invention, the first movable frame and the second movable frame may each be provided with a wheel that rotates while contacting a side surface of the tank.

Further, in the tank weld line inspection pretreatment device according to the present invention, the first brush and the second brush polish or clean the weld line formed at the inner peripheral edge of the tank between the tank floor surface and the tank side surface. The first brush contacts at least a half or more area in the width direction of the weld line on the tank floor side in the weld line, and is in contact with at least half of the weld line in the width direction, and The second brush is arranged at an angle of about 10 to 45 degrees with respect to the tank floor so that the closer it gets to the center in the width direction, the closer it gets to the tank floor. about 10 to 45 cm with respect to the tank side surface, so that the area contacts at least half or more of the widthwise area of the weld line, and approaches the tank side surface as it approaches the widthwise center of the weld line in side view. It may be arranged so as to be inclined by a degree.

In the present invention, the first brush rotates or vibrates in contact with an area on one edge side of the weld line and is at least half of the area in the width direction of the weld line; A region on the other edge side opposite to the one edge, which is at least half or more in the width direction of the weld line (an area that partially overlaps with the area polished or cleaned by the first brush) ) is moved along the welding line, so that the first brush and the second brush are moved along the welding line. The weld line can now be polished or cleaned simply by moving it along the surface of the tank, and can be used to polish or clean the surface side of the weld line, which is performed as a pre-inspection treatment for the weld line on the tank floor or the inner periphery of the tank. Efficiency will be greatly improved.

Further, in the present invention, when polishing or cleaning a weld line formed between a plurality of flat plates constituting a tank floor surface by the first brush and the second brush, the first brush and the second brush The closer the brushes are to the widthwise center of the weld line (the center between both edges of the weld line in the width direction), the closer they are to the tank floor. When arranged so as to be inclined, the tips of the rotating or vibrating brushes come into strong contact with the surface of the weld line, so that the brushes formed between the plurality of flat plates that make up the tank floor are The entire weld line can be polished or cleaned efficiently and reliably.

Further, in the present invention, the angle between the first movable frame and the second movable frame can be changed (adjusted) by the connecting portion in a direction parallel to the tank floor surface. When the tank is connected to the tank, the weld line formed on the inner peripheral edge of the circular tank, for example, between the tank floor and the tank side is polished or cleaned by the first brush and the second brush. In this case, when the first movable frame moves the first brush while maintaining a constant distance from the welding line and the tank floor, the second movable frame also moves the second brush. Since it can be moved while maintaining a certain distance from the weld line and the side of the tank, polishing or cleaning of the weld line formed on the inner peripheral edge of the tank between the tank face and the tank side can be done by polishing or cleaning the entire weld line. This makes it possible to perform the process uniformly and accurately over the entire range.

Further, in the present invention, when the first movable frame and the second movable frame are each provided with a wheel that rotates while abutting against a side surface of the tank, the first movable frame and the second movable frame Since the distance between the second movable frame and the side surface of the tank can be maintained constant, each of the brushes can be applied accurately to the weld line on the inner peripheral edge of the tank for polishing or cleaning.

Furthermore, in the present invention, when polishing or cleaning a weld line formed on the inner peripheral edge of the tank between the tank floor surface and the tank side surface using the first brush and the second brush, the first brush contact an area on the tank floor side in the weld line that is at least half of the weld line in the width direction, and the closer it gets to the center of the weld line in the width direction, the closer it gets to the tank floor. The second brush is arranged so as to be inclined by about 10 to 45 degrees with respect to the tank floor surface when viewed from the side, and the second brush is disposed in an area on the tank side side in the weld line at least in the width direction of the weld line. When the welding line is in contact with more than half of the area and is inclined at an angle of about 10 to 45 degrees with respect to the tank side surface when viewed from the side, the closer to the center of the width direction of the weld line, the closer to the tank side surface. The tip of each rotating or vibrating brush will come into strong contact with the surface of the weld line, making it easy to polish or clean the entire weld line formed on the inner periphery of the tank between the tank floor and tank side. It can be done efficiently and reliably.

1 is a perspective view showing a tank weld line inspection pretreatment device according to Embodiment 1 of the present invention. FIG. 2 is a side view of the tank weld line inspection pretreatment device according to the first embodiment. (a) is a rear view of the tank weld line inspection pretreatment device according to the first embodiment, and (b) is a plan view thereof. FIG. 3 is a schematic diagram for explaining the position and operation of each brush with respect to a welding line and a tank floor surface in the first embodiment. FIG. 2 is a perspective view showing a tank weld line inspection pretreatment device according to a second embodiment of the present invention. FIG. 7 is a side view of a tank weld line inspection pretreatment device according to the second embodiment. (a) is a plan view of the tank weld line inspection pretreatment device according to the second embodiment, and (b) is a schematic cross-sectional view of the brush 15 and its surroundings in FIG. 5A when viewed from the right side of the brush 15 in FIG. 5A. It is. FIG. 7 is a schematic diagram showing the welding line, the position and operation of each brush with respect to the tank floor and the same side surface in the second embodiment. FIG. 2 is a schematic diagram for explaining weld lines that join flat plates that make up the floor of the tank, and weld lines that join the floor and side surfaces of the tank. (a) is a perspective view showing a conventional tank weld line inspection pretreatment tool, and (b) is a schematic diagram showing a brush attached to the lower surface side of the tool.

[Embodiment 1]
Hereinafter, a pretreatment device for inspection of weld lines on the tank floor side according to Embodiment 1 of the present invention will be described with reference to FIGS. 1-3. 1 is a perspective view showing the first embodiment, FIG. 2A is a side view thereof, FIG. 2B is a rear view and a plan view thereof, and FIG. 3 is a weld line 22 of each brush 3, 4 and the tank floor surface in the first embodiment. 21 is a schematic diagram for explaining the position and operation of the device 21. FIG.

In FIGS. 1, 2A, and 2B, reference numeral 1 indicates a movable frame that can be self-propelled by a total of four wheels 2 and a motor, and reference numerals 3 and 4 indicate a total of two brushes arranged on the lower surface side of the movable frame 1. (A brush similar to the one shown in FIG. 8(b), for example, which polishes or cleans the surface of the weld line by rotating or vibrating itself.) 5 is an operation panel and a power supply device for operating the first embodiment. It is an operation box equipped with the following. The two brushes 3 and 4 are located at shifted positions so as not to overlap with each other in the moving direction of the movable frame 1, and in a direction perpendicular to the moving direction (width direction of the welding line 22). They are arranged at shifted positions so that they only partially overlap each other and can cover the entire weld line 22 with both.

As a result, in the first embodiment, when the movable frame 1 moves along the welding line 22 (see FIG. 7), the two brushes 3 and 4 touch the upper surface of the welding line 22 at a predetermined distance from each other. It moves while rotating or vibrating at a different position (shifted position). That is, first, by moving one brush 3, at least half or more of the area on one edge side of the weld line 22 is polished, etc., and then the other brush 3, which is moved a certain small distance away from this one brush 3, is polished. By moving the brush 4 in the same direction, at least half of the area on the other edge side of the weld line 22 is polished. Therefore, as the two brushes 3 and 4 as described above rotate or vibrate while moving, the entire upper surface of the weld line 22 is polished or cleaned.

Further, in the first embodiment, as shown in FIG. 3, the two brushes 3 and 4 are arranged between a plurality of flat plates 21a (see FIG. 7) that constitute the tank floor surface 21. When polishing or cleaning the weld line 22 (see FIG. 7) formed in (see) so that the brushes 3 and 4 get closer to the tank floor 21 as they get closer to the tank floor 21 (as the brushes 3 and 4 get farther from the center 22c between the edges 22a and 22b in the width direction of the welding line 22, the farther they get away from the tank floor 21) , is arranged so as to be inclined by about 10 to 45 degrees (more preferably about 20 to 35 degrees) with respect to the tank floor 21 when viewed from the side. Therefore, in the first embodiment, the tips of the bristles of the rotating or vibrating brushes 3, 4 come to strongly hit the center 22c in the width direction of the welding line 22 and the surface of the area near the center 22c in the width direction. , polishing or cleaning of the entire weld line 22 formed between the plurality of flat plates 21a constituting the tank floor surface 21 is performed efficiently and reliably.

As described above, according to the first embodiment, the area on the one edge 22a (see FIG. 3) side of the weld line 22 and at least half of the area in the width direction of the weld line 22 is contacted. a brush 3 that rotates or vibrates; and a region of the welding line 22 on the other edge 22b (see FIG. 3) opposite to the one edge 22a, which is at least half of the welding line 22 in the width direction. The brush 4, which rotates or vibrates in contact with the above areas (including areas that partially overlap with the areas to be polished or cleaned by the brush 3), is moved along the weld line 22. Therefore, the entire weld line 22 can be polished or cleaned simply by moving the brushes 3 and 4 along the weld line 22, and the weld line 22 can be polished or cleaned as a pre-inspection treatment for the weld line 22 on the tank floor 21. The efficiency of polishing or cleaning the surface side of the can be greatly improved.

Further, in the first embodiment, when polishing or cleaning the weld line 22 formed between the plurality of flat plates 21a forming the tank floor surface 21 using the brushes 3 and 4, the brushes 3 and 4 are used to The closer the brushes 3 and 4 are to the center 22c of the weld line 22 in the width direction (see FIG. 3), the closer it gets to the tank floor 21. (the further away from the tank floor 21), and the arrangement is such that it is inclined at an angle of about 10 to 45 degrees (preferably about 20 to 35 degrees) with respect to the tank floor 21 when viewed from the side. The tips of the rotating or vibrating brushes 3 and 4 come into strong contact with the surface of the weld line 22 (see FIG. 3), and as a result, a gap is formed between the plurality of flat plates 21a that make up the tank floor 21. Polishing or cleaning of the entire weld line 22 can be performed efficiently and reliably.

[Embodiment 2]
Next, a pretreatment device for inspection of a weld line on the inner peripheral edge of a tank according to a second embodiment of the present invention will be described with reference to FIGS. 4-6. FIG. 4 is a perspective view showing a tank weld line inspection pretreatment device according to the second embodiment, FIG. 5A is a side view of the tank weld line inspection pretreatment device according to the second embodiment, and FIG. 5B(a) is the present embodiment. FIG. 6 is a plan view of the tank weld line inspection pretreatment device according to No. 2, FIG. 6 is a schematic cross-sectional view of the brush 15 and its surroundings in FIG. FIG. 2 is a schematic diagram showing the positions and operations of the brushes 14 and 15 with respect to the welding line 23, the tank floor surface 21, and the same side surface 24 in FIG.

4, FIG. 5A, and FIG. 5B, 10 is an operation box that houses an operation panel, a power supply device, etc., 11 is a first movable frame that can move by itself using a total of four wheels 18a, 18b and a motor, and 12 is a total A second movable frame 13, which is equipped with two wheels 19 and is connected to the first movable frame 11 and runs while being pulled by the first movable frame 11, is connected to the first movable frame 11 and the second movable frame 12. This is a connecting portion 13 that connects these so that the angle between them in a direction parallel to the tank floor 21 can be changed (adjusted). The first movable frame 11 and the second movable frame 12 are each provided with at least one positioning wheel 20a and 20b that rotates while contacting the tank side surface 24 side.

Further, in FIGS. 4, 5A, and 5B, reference numeral 14 denotes a brush arranged on a portion of the first movable frame 11 facing the tank floor 21 so that the bristles of the brush mainly extend toward the tank floor 21 side. , 15 is a brush arranged on a portion of the second movable frame 12 facing the tank side surface 24 so that the bristles of the brush mainly extend toward the tank side surface 24 side. The brush 14 is used to polish or clean at least half of the area on the tank floor 21 side in the tank inner peripheral edge side weld line 23 (see FIG. 5B(b), FIG. 6, and FIG. 7). (see 6). Further, the brush 15 is used to polish or clean at least half of the tank inner circumferential weld line 23 on the tank side surface 24 side (see FIG. 6).

In the second embodiment, the above-mentioned connecting portion 13 allows the first moving frame 11 and the second moving frame 12 to be changed in the direction in which the angle between them is parallel to the tank floor surface 21 ( Adjustment) When the brushes 14 and 15 are used to polish or clean the weld line 23 formed on the inner peripheral edge of the tank between the floor surface 21 and side surface 24 of the tank. , the second movable frame 12 pulled (driven) by the first movable frame 11 moves the brush 15 to the inner peripheral edge of the tank while keeping a constant distance from the welding line 23 and the tank side surface 24. Since it is possible to move in a circular shape along the tank, it is possible to polish or clean, for example, a circular weld line 23 formed on the inner peripheral edge of the tank between the floor surface 21 and the side surface 24 of the tank. It becomes possible to perform the process uniformly and accurately over the entire area 23.

Further, in the second embodiment, when polishing or cleaning the weld line 23 formed on the inner peripheral edge of the tank between the floor surface 21 and the side surface 24 of the tank, the brushes 14 (see FIG. (see reference numeral 14a, etc.) near the center 23a in the width direction of the weld line 23 (see FIG. (away from the side surface 21), and inclined by about 10 to 45 degrees (preferably about 20 to 35 degrees) with respect to the tank floor 21. In addition, when polishing or cleaning the weld line 23 formed on the inner peripheral edge of the tank between the floor surface 21 and the side surface 24 of the tank, each of the brushes 15 has bristles of the brush 15 (see reference numeral 15a in FIG. 6, etc.). ) approaches the side surface 21 of the tank as it approaches the center 23a in the width direction of the weld line 23 (see FIG. 6). ), and is arranged so as to be inclined by about 10 to 45 degrees (preferably about 20 to 35 degrees) with respect to the side surface 21 of the tank. Therefore, in the second embodiment, the tips of the rotating or vibrating brushes 14 and 15 come into strong contact with the surface of the weld line 23 (see FIG. 6), and as a result, the floor surface 21 and side surface of the tank 24 can be efficiently and reliably polished or cleaned entirely of the weld line 23 formed on the inner peripheral edge of the tank.

As described above, according to the second embodiment, the brush rotates or vibrates in contact with an area of the weld line 23 on the tank floor surface 21 side that is at least half of the area in the width direction of the weld line 23. 14, and an area in the weld line 23 on the side of the tank side surface 24 opposite to the side of the tank floor surface 21, which is at least half or more in the width direction of the weld line 23 (the area where the brush 14 polishes or cleans) The brush 15 that rotates or vibrates in contact with the welding line 23 is moved along the welding line 23, so the brush 14 and the brush 15 are moved along the welding line 23 The entire welding line 23 can now be polished or cleaned simply by moving it along the inner circumferential edge of the tank. Work efficiency can be greatly improved.

In addition, in the second embodiment, when polishing or cleaning the weld line 23 on the inner peripheral edge of the tank with the brush 14 and the brush 15, the brush 14 is moved to the center 23a between both edges of the weld line 23 in the width direction. The brush 15 is arranged so as to be inclined at an angle of 10 to 45 degrees with respect to the tank floor surface when viewed from the side so that the brush 15 approaches the tank floor surface 21 as it approaches the tank floor surface 21. The rotating or vibrating brushes are arranged so as to be inclined by 10 to 45 degrees with respect to the tank side surface when viewed from the side, so that the closer to the center 23a, the closer to the tank side surface 24 (see FIG. 6). The tips of 14 and 15 come into strong contact with the surface of the weld line 23 (see symbols 14a and 15a in FIG. 6), making it possible to efficiently and reliably polish or clean the entire weld line 23 at the inner peripheral edge of the tank. Be able to do it.

Further, in the second embodiment, the connecting portion 13 (see FIG. 5A) allows the first moving frame 11 and the second moving body 12 to be connected in a direction in which the angle between them is parallel to the tank floor surface 21. Since the connection is made so that it can be changed (adjusted), the weld line 23 formed on the inner peripheral edge of the tank between the tank floor surface 21 and the tank side surface 24 can be polished or polished by the brush 14 and the brush 15. In the case of cleaning, when the first movable frame 11 moves the brush 14 while keeping a constant distance from the welding line 23 and the tank floor 21, the second movable frame 12 also moves the brush 15. It is now possible to move while maintaining a certain distance from the welding line 23 (and the tank side 24), and polishing or It becomes possible to uniformly and accurately clean the entire weld line 23.

Further, in this embodiment, the first movable frame 11 and the second movable frame 12 are each provided with wheels 20a and 20b that rotate while contacting the tank side surface 24, so that the first movable frame 11 and the second movable frame 12 are The distance between the frame body 11 and the second movable frame body 12 from the tank side surface 24 can always be kept constant, and each of the brushes 14 and 15 can be accurately applied to the weld line 23 on the inner peripheral edge of the tank. Be able to polish or clean.

Furthermore, in the second embodiment, when the brush 14 and the brush 15 polish or clean the weld line 23 formed on the inner peripheral edge of the tank between the floor surface 21 and the side surface 24 of the tank, the brush 14 is The area on the tank floor surface 21 side of the weld line 23 that contacts at least half or more of the area in the width direction of the weld line 23 and approaches the center 23a of the weld line 23 in the width direction, the tank floor surface 21 The brush 15 is placed so as to be inclined by 10 to 45 degrees with respect to the tank floor surface in side view (see FIG. 6), and the brush 15 is placed in the weld line 23 in an area on the tank side surface 24 side. It contacts at least half of the area in the width direction of the weld line 23 and is inclined by 10 to 45 degrees with respect to the tank side surface in side view so that the closer it gets to the center 23a of the weld line 23 in the width direction, the closer it gets to the tank side surface 24. (see FIG. 6), the tips of the rotating or vibrating brushes 14, 15 strongly contact the surface of the welding line 23 (see numerals 14a, 15a in FIG. 6). ), it becomes possible to efficiently and reliably polish or clean the entire weld line 23 formed on the inner peripheral edge of the tank between the floor surface 21 and side surface 24 of the tank.

Although each embodiment of the present invention has been described above, the present invention is not limited to these and various modifications can be made. For example, each of the brushes 3, 4, 14, 15 in each of the embodiments is generally rotated to polish the surfaces of the weld lines 22, 23; It is also possible to polish the surfaces of the welding lines 22 and 23 by finely vibrating the welding line 15.

1, 11, 12 Moving frame 2, 18a, 18b, 19, 20a, 20b Wheels 3, 4, 14, 15 Brushes 5, 10 Operation box 13 Connection part 21 Tank floor 22, 23 Welding line 22a, 22b Welding line Edges 22c, 23a Center part 24 in the width direction of the weld line Tank side surface

Claims (5)

A tank weld line inspection pre-treatment device for performing inspection pre-treatment on weld lines present on the tank floor or the inner peripheral edge of the tank, comprising:
While moving along the weld line, the one edge of the weld line is rotated or vibrated by contacting an area on the one edge side of the weld line that is at least half of the area in the width direction of the weld line. a first brush that polishes or cleans the surface side of the part side region;
While moving along the welding line while keeping a constant distance from the first brush behind the first brush, in a region on the other edge side opposite to the one edge in the welding line. a second brush that polishes or cleans the surface side of the other edge side area by rotating or vibrating in contact with at least half or more area in the width direction of the weld line;
a moving unit that moves the first brush and the second brush along the welding line;
Tank weld line inspection pre-treatment equipment equipped with The first brush and the second brush are for polishing or cleaning a weld line formed between a plurality of flat plates constituting the tank floor, and each brush cleans the weld line in the width direction of the weld line when viewed from the side. The tank weld line inspection pretreatment device according to claim 1, wherein the tank weld line inspection pretreatment device is arranged so as to be inclined at an angle of 10 to 45 degrees with respect to the tank floor so that the closer it gets to the center, the closer it gets to the tank floor. The first brush and the second brush are for polishing or cleaning a weld line formed on the inner peripheral edge of the tank between the tank floor and the tank side,
The moving unit includes a first moving frame that moves the first brush while facing the welding line and the tank floor surface, and a second moving frame that moves the second brush while facing the welding line and the tank side surface. and a connecting portion that connects the first moving frame and the second moving frame so that the angle between them in a direction parallel to the tank floor can be changed. The tank weld line inspection pretreatment device according to claim 1. 4. The tank weld line inspection pretreatment device according to claim 3, wherein the first moving frame and the second moving frame are each provided with a wheel that rotates while contacting a side surface of the tank. The first brush and the second brush are for polishing or cleaning a weld line formed on the inner peripheral edge of the tank between the tank floor and the tank side,
The first brush contacts at least half or more of a region of the weld line on the tank floor side in the width direction of the weld line, and approaches the center of the weld line in the width direction when viewed from the side. It is arranged so that it is inclined at an angle of 10 to 45 degrees with respect to the tank floor so that it approaches the tank floor,
The second brush contacts at least half or more of the area of the weld line on the side of the tank in the width direction of the weld line, and the second brush contacts the widthwise center of the weld line as it approaches the center of the weld line in the width direction. The tank weld line inspection pretreatment device according to claim 1, wherein the tank weld line inspection pretreatment device is arranged so as to be inclined by 10 to 45 degrees with respect to the tank side so as to approach the tank side.

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