JPH06143162A - Working table device for box type block - Google Patents

Abstract

PURPOSE:To perform stable support of a working table by deeply inserting a working table for a work, such as welding and painting, even when a box type block is provided with a narrow part. CONSTITUTION:An elevatable and horizontally telescopic beam 4 is arranged to a revolving table 2 revolvable around a vertical axis through parallel link arms 3A and 3B. A working table 8 is disposed to an arm revolving table 6, arranged rotatably around the vertical axis to the tip part of the horizontally telescopic horizontal beams 4, through a vertically rotatable rotary arm 7. First and second support legs 16 and 22 to downward rotatably support the horizontally telescopic beam 4 to the tip side of the horizontal beam 4 are arranged containably in the horizontally telescopic beam 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box block workbench device for performing welding, painting and the like in a large box block such as a hull block or a bridge.

[0002]

2. Description of the Related Art Conventionally, as a scaffold for providing work for high places, large box-shaped structures, etc., there are straight type boom work vehicles and work vehicles with a lift function.

[0003]

In the case where a reinforcing member such as a diaphragm, a rib or a web is attached to an intermediate portion such as a hull block, for example, a narrow overflow portion is formed at the center and the inside thereof is widened. Therefore, in the above-described conventional work device, even if the workbench can be inserted from the narrow overflow portion, it is difficult to move the workbench so as to reach the inner wall surface.

The present invention solves the above-mentioned problems, and even if the box-shaped block has a narrow overflow portion, the workbench can be inserted deeply to approach the surrounding wall surface, and work such as welding and painting can be performed. It is an object of the present invention to provide a work table device for a box-shaped block that can be easily operated.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, a box-type block workbench device of the present invention is capable of moving up and down via a parallel link on a swivel base that can swivel around a vertical axis. In addition, a horizontal telescopic beam that can be extended and retracted is provided, and the arm swivel base that is swivelable around the vertical axis at the tip of this horizontal telescopic beam is attached to the work table via a swivel arm that can be swung vertically. Provided, on the tip side of the horizontal telescopic beam,
The support leg that pivots downward and supports the horizontal telescopic beam is provided so as to be accommodated in the horizontal telescopic beam.

[0006]

According to the above construction, the swivel base is arranged outside the opening of the box-shaped block, and the horizontal telescopic beam is extended to keep the workbench from a narrow overflow such as a diaphragm while the rotary arm is extended in the horizontal direction. After being inserted into the block from a portion and stopped at a predetermined position, the supporting leg is pivoted downward to contact the inner surface of the block to support the horizontal telescopic beam. Then, by rotating the arm swivel base and rotating the rotary arm to move the work table, it is possible to approach a wall surface around the inner part and easily perform a predetermined work.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a box-type block workbench apparatus according to the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an omnidirectional carriage having traveling wheels 1a and 1b on axles in directions orthogonal to each other. On the omnidirectional carriage 1, a swivel base rotatable about a vertical axis is provided. Two are provided. A horizontal telescopic beam 4 is supported on the swivel base 2 via parallel link arms 3A and 3B which are rotatable in a vertical plane and parallel to each other, and a piston rod of a lifting cylinder device 5 provided on the swivel base 2 is mounted on the swivel base 2. The horizontal telescopic beam 4 is connected to one of the parallel link arms 3A so that the horizontal telescopic beam 4 can be moved in parallel in the vertical direction and the front-back direction.

The horizontal telescopic beam 4 is a telescopic type telescopic beam which can be telescopically moved in three steps forward, and an arm swivel base 6 which is swivelable about a vertical axis is attached to the tip of the horizontal telescopic beam 4. A work table 8 is mounted on the arm swivel base 6 via a parallel link type rotary arm 7 which is rotatable in the vertical direction.
Is provided.

As shown in FIG. 2, the horizontal telescopic beam 4 has first U-shaped cross sections to which the parallel link arms 3A and 3B are connected. The guide elongated hole 11 is formed. The second beam frame 12 having an H-shaped cross section that is slidably fitted in the first beam frame 10 is provided with the first guide rollers 14 that fit into the first guide elongated holes 11, and is provided on both side surfaces. The second guide elongated hole 14 is formed along the length direction. And the first beam frame 1
The first telescopic cylinder device 15 connected between 0 and the second beam frame 12 can extend and contract the second beam frame 12 from the first beam frame 10. Further, at the lower part of the second beam frame 12, a pair of left and right first support legs 16 whose front end is rotatable in a vertical plane including the second beam frame 12 via a horizontal pin 16a is provided. By the first leg rotation cylinder device 17 connected to the rear end of the beam frame 12 and the intermediate portion of the first support leg 16, the accommodation position in the second beam frame 12 and
The lower end receiving roller 18 can be brought into contact with the skin plate P of the box-shaped block B and can be rotated in the directions of arrows L and M between the supporting position for supporting the horizontal telescopic beam 4.

Further, the third beam frame 19 having a U-shaped cross section which is slidably fitted in the upper part of the second beam frame 12 is fitted with the second guide elongated hole 14.
A guide roller 20 is provided. The second telescopic cylinder device 21 connected between the second beam frame 12 and the third beam frame 19 can extend and shorten the third beam frame 19 from within the second beam frame 12. Further, the third beam frame 19 is provided with a pair of left and right second support legs 22 whose front end is rotatable in a vertical plane including the third beam frame 19 via a horizontal pin 22a. The second leg rotation cylinder device 23 connected to the rear end portion of the first support leg 19 and the intermediate portion of the second support leg 22 allows the second support leg 22 to be housed in the third beam frame 19 and the lower end receiving roller 24. It can be rotated in the directions of arrows N and O between the skin block P of the box-shaped block B and the supporting position for supporting the horizontal telescopic beam 4.

Air hoses for compressed air used in the workbench 8 and hoses such as power cables and signal cables 25
Is a cable drum (not shown) provided on the swivel base 2.
Is introduced to the rear end of the horizontal telescopic beam 4, and further introduced from the arm swivel base 6 to the workbench 8 through the horizontal telescopic arm 4. Air hose 2 of these hoses 25
5a, as shown in FIG. 3, a plurality of branch joints 26 are provided in the third beam frame 19, and the branch joints 26 have openings 19a of the third beam frame 19.
It is arranged to face. As a result, in the work I in the box-shaped block B other than the workbench 8, by using the branch joint 26, it is possible to perform the scouring work and the painting work without using the air hose which is conventionally drawn from the outside.

In the above construction, when performing work in the box block B, the omnidirectional carriage 1 is first stopped in front of the opening of the box block B, and the lifting cylinder device 5 and the swivel base 2 are operated. The extension direction of the horizontal telescopic beam 4 is adjusted, and the rotating arm 7 is positioned in the direction continuous with the horizontal telescopic beam 4. Then, the first and second telescopic cylinder devices 15 and 21 are advanced to the second and third beam frames 1
2 and 19 are extended forward, and the workbench 8, the swing arm 7, and the arm swivel base 6 are inserted into the box-shaped block b from the narrow overflow portion d of the diaphragm D. Next, the first and second leg rotation cylinder devices 17 and 23 are advanced to rotate the first and second support legs 16 and 22 downward to receive the receiving rollers 18 and 2.
4 are landed on the bottom skin plate P to support the moment in the falling direction applied to the horizontal telescopic beam 4.

[0014]

As described above, according to the present invention, since the horizontal telescopic beam is provided on the swivel base through the parallel link, the height of the horizontal telescopic beam is adjusted and the horizontal telescopic beam is moved backward. When used, the horizontal telescopic beam can be balanced and the horizontal telescopic beam can be stably supported. In addition, since the support leg that can support the horizontal telescopic beam is rotatably provided at the tip side of the horizontal telescopic beam, it can be placed parallel to the horizontal telescopic beam at the time of insertion, so that a narrow overflow of a narrower diaphragm or the like will occur. Even when the horizontal telescopic beam is long, the horizontal telescopic beam can be supported from below by the support legs, and the workbench can be stably supported.

[Brief description of drawings]

FIG. 1 is an overall side view showing an embodiment of a box type workbench device according to the present invention.

FIG. 2 is a cross-sectional view of the workbench apparatus when the horizontal telescopic beam is telescopic.

FIG. 3 is a partial cross-sectional view of a third beam frame of the workbench device.

[Explanation of symbols]

 1 Omnidirectional trolley 2 Swivels 3A, 3B Parallel link arm 4 Horizontal telescopic beam 5 Lifting cylinder device 6 Arm swivel 7 Swiveling arm 8 Working platform 10 1st beam frame 12 2nd beam frame 15 1st telescopic cylinder device 16 1st support leg 17 1st leg rotating cylinder device 19 3rd beam frame 21 2nd telescopic cylinder device 22 2nd support leg 23 2nd leg rotating cylinder device 25a Air hose 26 Branch joint

Claims (1)

[Claims] 1. A swivel that can swivel about a vertical axis,
A horizontal telescopic beam that can be raised and lowered and expanded and contracted via parallel links is provided, and an arm swivel installed at the tip of this horizontal telescopic beam so as to be rotatable around the vertical axis is vertically rotatable. A workbench is provided via a rotating arm, and a support leg that pivots downward and supports the horizontal telescopic beam is provided on the tip side of the horizontal telescopic beam so as to be accommodated in the horizontal telescopic beam. Box type workbench device.