JPH04333369A - Column welding equipment in structures - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding device used in constructing columns of high-rise structures such as buildings.

0002

[Prior Art] In high-rise buildings such as buildings,
Columns are constructed by sequentially joining them together, but in this case, the welding of the joints between columns was mainly left to manual work by workers.

0003

[Problems to be Solved by the Invention] However, manual joint welding does not improve workability, and there is a limit to the improvement in welding quality even if it relies on skilled workers. In particular, in the case of round columns, the worker had to go around the circumference of the column while welding, making the work extremely inefficient and resulting in unstable quality.

The present invention has been made in view of the above circumstances, and provides a welding device for columns in a structure that can improve the efficiency of welding work and the quality of welding by using a welding robot. The purpose is to

[0005]

[Means for Solving the Problems] In order to achieve the above object, a column welding device for a structure according to the present invention is divided into a plurality of parts in the circumferential direction and configured to be able to surround a steel frame column. a ring-shaped guide rail, a rail opening/closing drive mechanism for displacing at least one segment of the guide rail between a closed position surrounding the column and an open position separated from each other; The robot moving mechanism moves the robot along the guide rail.

[0006]

[Operation] In the above structure, the divided guide rail is driven by the rail opening/closing drive mechanism so that the guide rail surrounds the column. In this state, by moving the welding robot along the guide rail, the welding robot can fully automatically weld the joint portion of the column. As a result, it is possible to improve efficiency due to unmanned welding work and to achieve uniformity of welding quality.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a plurality of outer circumferential columns that form the framework of the building, and are made of round steel columns. 2
are the multiple inner peripheral columns that form the framework of the building, and are made of square steel columns. Reference numeral 3 denotes a beam installed between each of the outer circumferential column 1 and the inner circumferential column 2. 4 is a horizontally movable overhead crane prepared for constructing columns, and 5 is a floor fireproof coating device. Reference numeral 6 denotes a welding device for welding the joint of the outer circumferential column 1, and is movably supported on a work floor 7 provided so as to go around the outside of the outer circumferential column 1.

Details of the welding device 6 will be explained based on FIGS. 3 and 4. 3 and 4, 31, 31 are a pair of rails fixed to the work floor 7;
Reference numeral 2 denotes a truck having running wheels 33 that runs on the rails 31. 34 is a welding robot, which includes a base 35 that can rotate around a vertical axis, a body 36 that can move back and forth with respect to this base 35, and a body that can move in the vertical direction and around the vertical axis with respect to this body 36. , and an arm 37 configured to be swingable, and a torch 38 is attached to this arm 37. Reference numeral 39 denotes a rotation shaft portion that supports the base portion 35.

A ring-shaped guide rail 41 is supported on the truck 32 via a support 40, and this guide rail 41 is set at a position concentric with and surrounding the outer peripheral column 1. has been done. Reference numeral 42 denotes an annular body fitted to the outer peripheral column 1; 43 a support arm member rotatably supported by the annular body 41 to support the guide rail 41;
1 is stably fixed. A welding power source 44, a control panel 45 (FIG. 7), and the like are installed on the cart 32. Further, on the work floor 7, a drive control cable 46 is provided.
, a welding control cable 47, gas piping 48, etc. are installed. 50 is a fume hood, and 51 is a cable carrier. This cable carrier 51 has an arc-shaped movable member 51A that can move along the guide rail 41, as shown in FIG. 5, for example.

The rotating shaft portion 39 of the welding robot 34 is supported by the guide rail 41 via a rail receiving member 52. 53 is a gear that receives the rotational driving force on the rotating shaft portion 39 side, and the gear 5 that meshes with this gear 53
4, etc., the robot 34 is moved to the guide rail 41.
It constitutes a robot movement mechanism 55 that causes the robot to travel along.

The guide rail 41 is divided into a plurality of parts, for example three parts, in the circumferential direction, and these divided parts 41A, 4
Of 1B and 41C, the divided bodies 41A and 41B are configured to be driven to open and close by a rail opening/closing drive mechanism 56 shown in FIG. has been done.

In FIG. 6, 57 is a cylinder device pivotably supported on the support 40 in a horizontal plane, and 58 is a connection fixed to one end of each of the divided bodies 41A and 41B of the guide rail 41. This connecting body 58 is supported via a pivot 60 by a bracket 59 fixed to the truck 32 side. The connecting body 58 and the distal end side of the piston rod 61 of the cylinder device 57 are connected by a first link 62, and the bracket 63 fixed to the divided body 41C and the distal end side of the piston rod 61 are connected together. are connected by a second link 64, and the pushing operation of the piston rod 61 by this cylinder device 57 drives the divided bodies 41A, 41B to the closed position, and the retracting operation of the piston rod 61 drives the divided bodies 41A, 41B.
is configured to drive to an open position.

Next, a welding procedure for the outer peripheral column 1 having the above structure will be explained. First, the cart 32 is moved along the rail 31 on the work floor 7 side to the vicinity of a predetermined outer peripheral column 1. At this position, the rail opening/closing drive device 56 is driven. That is, when the piston rod 61 is retracted and actuated by the cylinder device 57, the first and second links 6
The divided body 41 in the guide rail 41 via 2 and 64
A, 41B are displaced to the open position shown by the chain line in FIG. After the outer peripheral column 1 is positioned concentrically with the guide rail 41, the piston rod 6 is moved by the cylinder device 57.
1 is pushed out, the divided bodies 41A, 41B are displaced to the closed position by an operation opposite to the above. As a result, Figure 7
The guide rail 41 is set so as to surround the outer peripheral column 1 as shown in FIG.

In this state, welding is started after the torch 38 attached to the welding robot 34 is directed toward the joint portion of the outer peripheral column 1, as shown in FIG. On the other hand, as the robot 34 starts the welding operation, the robot moving mechanism 55 operates, so the robot 55 moves along the guide rail 41. That is, the joint portion of the outer peripheral column 1 is welded all the way around. In this case, welding is performed by rotating the robot 34 in both forward and reverse directions, as shown in FIG. 8, so that the weld joint is located at only one circumferential position on the same surface.

By moving the welding robot 34 along the guide rail 41 in this manner, the entire circumference of the outer peripheral column 1 can be automatically welded, and uniform welding quality can be obtained. In particular, since the guide rail 41 is made up of three divided bodies 41A, 41B, and 41C that can be opened and closed, after welding one outer column 1, the carriage 32 can be moved to the next outer column 1. By moving the guide rails 41 through the guide rails 41, the guide rails 41 can be set so as to surround the outer peripheral columns 1, so that each outer peripheral column 1 can be welded in sequence, making the work more efficient.

Furthermore, in this embodiment, the guide rail 41 is supported from below by the support arm member 43 of the annular body 42, which stabilizes the running support state of the robot 34, which is useful for improving welding quality.

FIG. 9 shows a welding device applied when welding the outer circumferential column 2, which is a square column, and the guide rail 41 is
It is supported by a base plate 92 via a reinforcing plate 91, and this base plate 92 is adapted to be transported and moved by the above-mentioned overhead crane 4. Reference numeral 93 denotes a tensioning member for supporting the guide rail 41 against the outer surface of the inner peripheral column 2. Note that the robot 34 in this case uses a cable carrier 94 as shown in FIG.

When welding the outer peripheral column 2, FIG.
The operation of opening and closing the guide rail 41 as in No. 1 is the same as in the previous embodiment, so the explanation thereof will be omitted. In this case, welding by the robot 34 uses a copper tab, and the two robots perform the welding work symmetrically, thereby suppressing deformation of the outer peripheral column 2.

Note that the number of divisions of the guide rail 41,
The number of openings and closings can be selected arbitrarily.

Further, the robot moving mechanism 55 and the rail opening/closing mechanism 56 are not limited to the examples described above, and various driving means can be employed.

[0021]

[Effects of the Invention] As described above, according to the present invention, a guide rail that is divided into a plurality of parts in the circumferential direction surrounds a column in an openable and closable manner, and a welding robot can be moved along this guide rail. With this configuration, welding work can be performed efficiently and unmanned, and welding quality can be improved.

[Brief explanation of drawings]

FIG. 1 is a front view showing a construction site to which a column welding device according to an embodiment of the present invention is applied.

FIG. 2 is a plan view showing the arrangement of outer and inner columns at a construction site.

FIG. 3 is a configuration diagram showing an example in which the welding device is used for a peripheral column that is a round column.

FIG. 4 is a diagram showing a welding robot and its movement mechanism.

FIG. 5 is a plan view showing cable wires of the robot used for the inner peripheral column.

FIG. 6 is a plan view showing a ring-shaped guide rail and its opening/closing drive mechanism.

FIG. 7 is a plan view showing a state in which the outer peripheral column is surrounded by a guide rail.

FIG. 8 is an explanatory diagram of the procedure for welding the outer peripheral column.

FIG. 9 is a configuration diagram showing an example in which the welding device is used for an inner circumferential column that is a prismatic column.

FIG. 10 is a plan view showing cable wires of the robot used for the outer peripheral column.

FIG. 11 is a plan view showing a state in which the inner peripheral column is surrounded by a guide rail.

[Explanation of symbols]

1, 2 Pillar 34 Welding robot 41
Guide rail 41A, 41B, 41C
split body

Claims (1)

[Claims] Claim 1: A ring-shaped guide rail that is divided into a plurality of parts in the circumferential direction and configured to be able to surround a steel column; a rail opening/closing drive mechanism for displacing between a closed position surrounding and an open position separated;
A welding apparatus for a column in a structure, comprising: a robot moving mechanism for moving a welding robot for a joint portion of the column along the guide rail.