KR102355413B1 - Welding traveling rail autonomous transfer device - Google Patents

Abstract

The present invention relates to an apparatus for autonomously transferring a driving rail for membrane welding. The apparatus includes: a rail (10); first, second and third transfer units (20, 30, 40) installed in both end parts and a middle part of the rail (10), respectively; first and second legs (50, 60) installed in the first and second transfer units (20, 30), respectively; a first support (70) installed on the rail (10) to be placed between the first and second legs (50, 60); and welding equipment (80) installed on the third transfer unit (40) to weld a planar part (A) and a curved part (B) of a membrane sheet (1). In accordance with the present embodiment, since the apparatus performs welding while automatically moving along a welding section, the apparatus can solve difficulty and inconvenience in which a worker has to carry a workpiece to a next working section upon the completion of work after welding, and, thus, there can be advantages of considerably improving convenience in work as well as safely protecting workers from the risk of musculoskeletal injuries which can occur during transportation procedures.

Description

{Welding traveling rail autonomous transfer device}

The present invention relates to an autonomous traveling rail transport device for membrane welding, and more particularly, to an autonomous driving rail transport device for membrane welding that performs welding while automatically moving along a welding section.

The LNG cargo hold of the carrier stores the liquefied natural gas cooled to about -163℃, so it is made of materials that can withstand cryogenic temperatures, is strong against thermal stress and thermal contraction, and has an insulation structure that can block heat intrusion. is done

The cargo hold is provided with a primary barrier, an upper insulating board, a secondary barrier and a lower insulating board from the inside to the outside, and is coupled to the inner hull.

Here, the primary barrier (membrane) has long corrugations (also called corrugations) formed to cross each other in a protruding curved shape, and the long corrugations are deformed by a certain amount when heat shrinkage occurs, thereby reducing thermal stress at the welding site. The larger the cross-sectional size of the long wrinkles to accommodate the shrinkage in the cryogenic environment, the better.

In the case of the primary barrier of an LNG cargo hold, welding is performed after overlapping 1.2T panels.

The existing work method was to perform welding using a 3m rail, and after 3m welding, two workers dismantled the rail to weld another weld seam, and then moved and installed it again.

Accordingly, due to the process of repeating dismantling after work, work productivity is greatly reduced, and as dismantling, moving, and reinstalling are repeated, the work is cumbersome and there is a problem of causing injuries to the musculoskeletal system of the worker.

Accordingly, it is necessary to develop an autonomous transporting device for traveling rails for membrane welding that can perform welding while moving the welding section automatically without the need for an operator to transport and reinstall until the work is completed.

1. Republic of Korea Patent Publication No. 10-2020-0060133 (2020.05.29)

An object of the present invention is to provide an autonomous transporting device for a traveling rail for membrane welding that automatically moves along a welding section and performs welding.

The present invention for achieving the above object,

rail;

a first transfer unit comprising a transfer member movably installed at one end of the rail, a transfer screw coupled to the transfer member to move the transfer member forward and backward, and a driving motor for rotating the transfer screw;

a second transfer unit comprising a transfer member movably installed at the other end of the rail, a transfer screw coupled to the transfer member to move the transfer member forward and backward, and a driving motor for rotating the transfer screw;

A third comprising a transfer member movably installed on the rail to be disposed between the first and second transfer units, a transfer screw coupled to the transfer member to move the transfer member forward and backward, and a drive motor rotating the transfer screw transfer unit;

a first leg which is installed to be elevating on the transfer member of the first transfer unit with the rail interposed therebetween and selectively restricts movement of the first transfer unit while supporting the rail through the first transfer unit;

a second leg that is installed to be elevating on the transfer member of the second transfer unit with the rail interposed therebetween and selectively restricts movement of the second transfer unit while supporting the rail through the second transfer unit;

A first supporter that is installed so as to be elevating on the rail to be disposed between the first and second transfer units and selectively supports the rail so that the transfer member of the first transfer unit and the transfer member of the second transfer unit can be moved along the rail ;

and welding equipment installed on the transfer member of the third transfer unit to be disposed on the opposite side of the first supporter and weld the flat portion and the curved portion of the overlapping membrane sheet.

In the present invention,

At both ends of the rail, a second support for selectively supporting the rail together with the first support so that the transfer member of the first transfer unit and the transfer member of the second transfer unit can be moved together along the rail is further provided It is characterized in that it is provided with reinforcement.

In the present invention,

A fixing means is further provided on the lower surface of the leg and the support,

The fixing means is characterized in that any one of a vacuum pad or an electromagnet that is detachably fixed to the bottom surface.

According to this embodiment, as the welding proceeds while automatically moving along the welding section, when the post-welding work is completed, the inconvenience and inconvenience of having to be transported by the operator to the next work section can be eliminated at once, so the convenience of work This greatly improved, of course, has the advantage of safely protecting the operator from the risk of musculoskeletal injuries that may occur during the transport process.

In addition, when the first supporter is operated, the second support installed at both ends of the rail is operated together to support the middle and both ends of the rail. Since there is no need to support the rail with one of the first leg and the second leg installed in the second transfer unit, the transfer member of the first transfer unit and the transfer member of the second transfer unit are transferred together along the longitudinal direction of the rail. Therefore, it is possible to break away from the method of the previous embodiment, which was sequentially transferred, and accordingly, the transfer time can be dramatically shortened, so there is an advantage that can be expected to improve the working efficiency compared to the working time compared to the previous embodiment.

1 is a partial perspective view and a front view showing an overlapping membrane sheet;
Figure 2 is a perspective view of the traveling rail autonomous transfer device for membrane welding according to the present invention.
3 is a plan view of the traveling rail autonomous transfer device for membrane welding according to the present invention.
4A to 4F are views for explaining the operation relationship of the traveling rail autonomous transport device for membrane welding according to the present invention.

Hereinafter, it will be described in detail based on the accompanying drawings.

1 is a partial perspective view and a front view of overlapping membrane sheets, FIG. 2 is a perspective view of an autonomous traveling rail transport device for membrane welding according to the present invention, and FIG. 3 is a traveling rail autonomous transport device for membrane welding according to the present invention is a plan view of

The traveling rail autonomous transport device for membrane welding according to the present invention is disposed adjacent to the overlapping membrane sheet 1 and is autonomously transported while welding the flat part A and the curved part B through the welding equipment 80. .

2 and 3 , the rail 10 is a rectangular member having a predetermined width and thickness, and three long holes penetrating vertically along the longitudinal direction are integrally formed on the upper surface of the rail 10 . In this long hole, the transfer screws 22, 32 and 42 of the first, second, and third transfer units 20, 30, 40 are rotatably accommodated, respectively.

Subsequently, the first transfer unit 20 is composed of a transfer member 21 , a transfer screw 22 , and a driving motor 23 , and is installed at one end of the rail 10 in this embodiment.

The transfer member 21 is a member having an approximately 'C' shape in plan view, and is installed on the rail 10 to move forward and backward.

The transfer screw 22 is rotatably installed on the rail 10 , is coupled to the transfer member 21 , and is rotated by receiving power (rotation force) to move the transfer member 21 in the longitudinal direction of the rail 10 . It plays a role in moving forward and backward.

The driving motor 23 is a normal servo motor, and in the present embodiment, it is installed on the rail 10 and serves to rotate the transfer screw 22 in the forward or reverse direction.

Subsequently, the second transfer unit 30 is composed of a transfer member 31 , a transfer screw 32 , and a driving motor 33 , and is installed at the other end of the rail 10 in this embodiment.

The transfer member 31 is a member having an approximately 'C' shape in plan view, and is installed on the rail 10 to move forward and backward.

The transfer screw 32 is rotatably installed on the rail 10 , is coupled to the transfer member 31 , and is rotated by receiving power (rotation force) to move the transfer member 31 in the longitudinal direction of the rail 10 . It plays a role in moving forward and backward.

The driving motor 33 is a normal servo motor, and in this embodiment, is installed on the rail 10 and serves to rotate the transfer screw 32 in the forward or reverse direction.

Subsequently, the third transfer unit 40 is installed on the rail 10 to be disposed between the first and second transfer units 20 and 30 to move the welding equipment 80 forward and backward along the longitudinal direction of the rail 10 . It serves to move.

The third transfer unit 40 includes a transfer member 41 , a transfer screw 42 , and a driving motor 43 .

The transfer member 41 is a plate material having a substantially rectangular shape when viewed in a plan view, and is installed on the rail 10 to move forward and backward, and on the upper surface of the transfer member 41, a flat portion (A) of the membrane sheet (1). And a welding equipment 80 for welding the curved portion (B) is installed.

The transfer screw 42 is rotatably installed on the rail 10 , is coupled to the transfer member 41 , and is rotated by receiving power (rotation force) to move the transfer member 41 in the longitudinal direction of the rail 10 . It plays a role in moving forward and backward.

The drive motor 43 is a normal servo motor, and in this embodiment, is installed on the rail 10 and serves to rotate the transfer screw 42 in the forward or reverse direction.

Subsequently, the first leg 50 is installed so as to be elevating on the transfer member 21 of the first transfer unit 20 with the rail 10 interposed therebetween, and the rail ( 10) serves to selectively limit the movement of the first transfer unit 20 while supporting.

The first leg 50 is a conventional pneumatic (hydraulic) pressure cylinder, and the first transfer unit 20 is operated according to the receiving power source and the rod protruding toward the bottom surface to support the transfer member 21. In this case, rather than moving the transfer member 21 , the rail 10 moves along the longitudinal direction of the transfer screw 22 .

Conversely, when the first leg 50 is supplied with a power source and the load is raised and drawn into the inside, the force supporting the transfer member 21 disappears, so when the first transfer unit 20 is operated, the rail 10 Rather than moving along the longitudinal direction of the transfer screw 22 , the transfer member 21 moves along the longitudinal direction of the transfer screw 22 .

Subsequently, the second leg 60 is installed so as to be elevating on the transfer member 31 of the second transfer unit 20 with the rail 10 interposed therebetween and the rail ( 10) serves to selectively limit the movement of the second transfer unit 30 while supporting.

The second leg 60 is a conventional pneumatic (hydraulic) cylinder, and the rod protrudes toward the bottom surface by receiving a power source so that the second transfer unit 30 is operated according to the support of the transfer member 31. Rather than moving the transfer member 31 , the rail 10 moves along the longitudinal direction of the transfer screw 32 .

Conversely, when the second leg 60 is supplied with a power source and the load is raised and drawn into the inside, the force supporting the transfer member 31 disappears, so when the second transfer unit 30 is operated, the rail 10 Instead of moving along the longitudinal direction of the transfer screw 32 , the transfer member 31 moves along the longitudinal direction of the transfer screw 32 .

As described above, due to the above action of the first leg 50 and the second leg 60, the operator can move autonomously without carrying it for the next process, so the operation is convenient and the working time can be greatly reduced. And there is an advantage that can safely protect the operator from the risk of injury to the musculoskeletal system.

Subsequently, the first supporter 70 is installed so as to be elevating on the rail 10 to be disposed between the first and second transfer units 20 and 30 , and the transfer member 21 of the first transfer unit 20 and The second transfer unit 30 serves to selectively support the rail 10 so that the transfer member 31 can move along the rail 10 .

The first supporter 70 has the same structure as the first and second legs 50 and 60, and is a normal pneumatic (hydraulic) cylinder.

For example, when a power source is supplied to the first supporter 70 , the rod drawn in therein protrudes toward the bottom surface and the transfer member 21 of the first transfer unit 20 according to the support of the rail 10 . ) or the transfer member 31 of the second transfer unit 30 can be moved along the longitudinal direction of the rail 10 .

Subsequently, the welding equipment 80 is installed on the transfer member 41 of the third transfer unit 40 and serves to weld the flat portion A and the curved portion B of the membrane sheet 1 .

Since the welding equipment 80 is a well-known technique in the relevant field, a detailed description thereof will be omitted.

Meanwhile, in the autonomous transfer device according to the present invention, the transfer member 21 or the second transfer unit 30 of the first transfer unit 20 is transferred in a state where the rail 10 is supported by the first support 70 . In order to transfer the member 31, any one of the rods of the first leg 50 installed in the first transfer unit 20 or the second leg 60 installed in the second transfer unit 30 is in contact with the floor surface. Since the transfer member 21 of the first transfer unit 20 or the transfer member 31 of the second transfer unit 30 can be transferred only when there is a problem, it is difficult to reduce the transfer time.

Therefore, in this embodiment, please note that the above problems are solved by installing the second supports 90 at both ends of the rail 10, respectively.

The second support 90 is installed to be elevating at both ends of the rail 10 so that the transfer member 21 of the first transfer unit 20 and the transfer member 31 of the second transfer unit 30 are mounted on the rail ( 10) serves to selectively support the rail 10 together with the first support 70 so that it can be moved together.

The second supporter 90 has the same structure as the first supporter 70 and is a normal pneumatic (hydraulic) cylinder.

For example, when a power source is supplied to the first supporter 70 and the second supporter 90 , the rod drawn into the interior protrudes toward the floor to support both ends and the middle of the rail 10 . .

Accordingly, for the transfer of the first transfer unit 20 or the second transfer unit 30, the first leg 50 installed in the first transfer unit 20 and the second leg installed in the second transfer unit 30 ( 60), since there is no need to support the rail 10, the transfer member 21 of the first transfer unit 20 and the transfer member 31 of the second transfer unit 30 are mounted together on the rail 10. Since it is possible to transport along the longitudinal direction, it is possible to break away from the method of the previous embodiment, which was sequentially transported, and accordingly, the transport time can be dramatically shortened, so that compared to the previous embodiment, an improvement in working efficiency compared to the working time can be expected. there is an advantage

On the other hand, only the rods of the first and second legs 50 and 60 and the first support 70 and the second support 90 may have a somewhat inferior fixation problem (slip generation).

Accordingly, in this embodiment, the fixing means 100 is further reinforced on the lower surfaces of the first and second legs 50 and 60 and the first support 70 and the second support 90 to solve the above problems.

The fixing means 100 is a member installed at the lower end of the rods of the first and second legs 50 and 60 and the first support 70 and the second support 90 to be detachably fixed to the bottom surface, and has a vacuum adsorption force. It is either a vacuum pad fixed to the floor surface via did

On the other hand, in the case of this embodiment, the first and second legs 50 and 60, the first support 70, and the second support 90 are shown and described as pneumatic (hydraulic) cylinders, but this is only one implementation. It is merely an example, and various well-known embodiments may be applied as long as it can perform the same function as necessary.

4A to 4F are diagrams for explaining the operation relationship of the traveling rail autonomous transport device for membrane welding according to the present invention, which will be described with reference to the following.

Referring to FIG. 4A , when the power button (not shown) is pressed in a state in which the traveling rail autonomous transfer device for membrane welding according to the present invention is disposed on the membrane sheet 1 first, the first transfer unit 20 and the first transfer unit 20 2 The rods are drawn out from the first leg 50 and the second leg 60 respectively installed in the transfer unit 30 and fixed to the floor surface via the fixing means 100 .

When the operation button (not shown) is pressed in the fixed state as described above, the driving motors 23 and 33 of the first and second transfer units 20 and 30 are supplied with power to rotate, and the driving motor 23 , 33) rotates the transfer screws 22 and 32 to transfer the transfer members 21 and 31.

However, the transfer members 21 and 31 of the first and second transfer units 20 and 30 are moved because the fixing means 100 connected via the first and second legs 50 and 60 is fixed to the bottom surface. This is impossible, and instead, the rail 10 moves along the flat portion A of the membrane sheet 1 .

In addition, when the first and second transfer units 20 and 30 are operated, the third transfer unit 40 is also operated together, and the driving motor 43 receives power to rotate the transfer screw 42 , and transfer By rotation of the screw 42, the transfer member 41 is moved along the longitudinal direction of the transfer screw 42, and the welding equipment 80 installed on the transfer member 41 is also moved.

The transfer member 41 of the third transfer unit 40 is moved in the opposite direction to the transfer members 21 and 32 of the first and second transfer units 20 and 30, for reference, the third transfer unit 40 The moving speed of the transfer member 41 is 1/2 of the moving speed of the transfer members 21 and 32 of the first and second transfer units 20 and 30, and can be appropriately controlled according to the object to be welded.

In the process of moving the transfer member 41 of the third transfer unit 40, the welding equipment 80 welds the flat portion A of the membrane sheet 1, as shown in FIG. 4B.

Meanwhile, the welding of the flat portion (A: see FIG. 1) of the membrane sheet 1 is completed, and the welding torch of the welding equipment 80 (see FIG. 3) is placed at the starting point b0 of the curved portion (B: see FIG. 1). ), the welding equipment 80 proceeds to weld the curved portion B according to the set program, which will be described in more detail as follows.

4C and 4D, the fixing means 100 installed on the rod is fixed to the bottom surface as the rod of the first support 70 protrudes toward the bottom surface according to a set program, and the first transfer unit 20 The first leg 50 installed on the pole allows the rod to be drawn in so that the fixing means 100 is separated from the bottom surface.

As described above, when the fixing means 100 installed on the first support 70 is fixed to the bottom surface, and the rod of the first leg 50 installed on the first transfer unit 20 is drawn in, the third transfer unit 40 ), the welding equipment 80 is moved (moved from left to right), and in the process of being transported, the welding equipment 80 performs welding from the start point b0 of the curved surface B to the top point b1.

In addition, in the process in which the welding equipment 80 is transferred by the third transfer unit 40 , the transfer member 21 of the first transfer unit 20 is moved by the driving motor 23 and the transfer screw 22 . (moved from left to right), and when the movement of the transfer member 21 is completed, the first leg 50 installed in the first transfer unit 20 is operated and the bottom surface through the fixing means 100 installed on the rod is fixed on

And when the first leg 50 is fixed to the floor surface through the fixing means 100, then the second leg 60 installed in the second transfer unit 30 allows the rod to be drawn in and the fixing means from the floor surface. Let (100) separate.

When welding is completed from the start point b0 to the top point b1 of the curved surface portion B, the welding equipment 80 is moved (moved from left to right) by the third transfer unit 40 according to a set program. Welding is performed from the top point (b1) of the part (B) to the end point (b2).

In the process in which the welding equipment 80 is transferred by the third transfer unit 40, the transfer member 31 of the second transfer unit 30 is moved (left) by the driving motor 33 and the transfer screw 32. to the right) and when the movement of the transfer member 31 is completed, the second leg 60 installed in the second transfer unit 30 is operated and fixed to the floor surface through the fixing means 100 installed on the rod as a medium do.

When the welding of the curved portion B is completed by the welding equipment 80, as shown in FIG. 4f, the rail 10 is advanced by the first and second transfer units 20 and 30, and the welding equipment (80) is retracted by the third transfer unit 40 to weld the flat portion (A) and the curved portion (B) of the next welding section.

Through the preceding series of processes, the autonomous transport device for membrane welding traveling rail according to the present invention automatically moves sequentially along the welding section (from the start point of the flat part to the end point of the curved part) while welding is performed. The convenience and convenience of work is greatly improved because the operator must transport to the next work section (the point where the flat part starts), so that the hassle and inconvenience can be resolved at once. There are advantages to being able to keep it safe.

In addition, the rail traveling device of the present invention can be manufactured in a small size, so it is economical.

Meanwhile, as shown in FIGS. 4A to 4F , when the second supports 90 are installed at both ends of the rail 10 , the second support 90 operates together when the first supporter 70 is operated. As it supports the middle and both ends of the rail 10, it is possible to secure stability with respect to the supporting force, and for the transfer of the first transfer unit 20 or the second transfer unit 30, the first transfer unit 20 Since there is no need to support the rail 10 with either one of the first leg 50 installed in the second transfer unit 30 and the second leg 60 installed in the second transfer unit 30, the transfer member of the first transfer unit 20 (21) and the transfer member 31 of the second transfer unit 30 can be transferred together along the longitudinal direction of the rail 10, so it is possible to break away from the method of the previous embodiment in which the transfer is sequentially carried out, and thus transfer Since the time can be remarkably shortened, there is an advantage that can be expected to improve the working efficiency compared to the working time compared to the previous embodiment.

Although the present invention has been described in detail only with respect to the specific embodiments described, it is natural for those skilled in the art that various changes and modifications can be made within the technical spirit of the present invention, and it is natural that such variations and modifications belong to the appended claims.

1: Membrane sheet A: Flat part B: Curved part
b0: start point b1: top point b2: end point
10: rail 20, 30, 40: first, second, third transfer unit
21,31,41: transfer member 22,32,42: transfer screw
23,33,43: drive motor 50,60: first and second legs
70, 90: first and second supporters 80: welding equipment

Claims (3)

rail;
a first transfer unit comprising a transfer member movably installed at one end of the rail, a transfer screw coupled to the transfer member to move the transfer member forward and backward, and a driving motor for rotating the transfer screw;
a second transfer unit comprising a transfer member movably installed at the other end of the rail, a transfer screw coupled to the transfer member to move the transfer member forward and backward, and a driving motor for rotating the transfer screw;
A third consisting of a transfer member movably installed on a rail to be disposed between the first and second transfer units, a transfer screw coupled to the transfer member to move the transfer member forward and backward, and a drive motor rotating the transfer screw transfer unit;
a first leg which is installed so as to be elevating on the transfer member of the first transfer unit with the rail interposed therebetween and selectively restricts movement of the first transfer unit while supporting the rail through the first transfer unit;
a second leg that is installed to be elevating on the transfer member of the second transfer unit with the rail interposed therebetween and selectively restricts movement of the second transfer unit while supporting the rail through the second transfer unit;
A first supporter that is installed on the rail to be elevated to be disposed between the first and second transfer units and selectively supports the rail so that the transfer member of the first transfer unit and the transfer member of the second transfer unit can be moved along the rail ;
and welding equipment installed on the transfer member of the third transfer unit to be disposed on the opposite side of the first supporter and weld the flat and curved portions of the overlapping membrane sheets.
The method of claim 1,
A second support is installed at both ends of the rail so as to be liftable and selectively supports the rail together with the first support so that the transfer member of the first transfer unit and the transfer member of the second transfer unit can move together along the rail. A traveling rail autonomous transport device for membrane welding, characterized in that it is reinforced.
3. The method of claim 2,
Fixing means are further provided on the lower surfaces of the first and second legs and the first and second supports,
The fixing means is a traveling rail autonomous transport device for membrane welding, characterized in that either a vacuum pad or an electromagnet that is detachably fixed to the floor surface.

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