JP2922840B2 - Work table for horizontal welding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding worktable for welding a connection member or the like to a columnar body having a box-shaped cross section as a building box structure, and more particularly, to a horizontal and rotatable worktable. The present invention relates to an improvement of a work table for welding a connection member to a columnar body supported by a work.

[0002]

2. Description of the Related Art A columnar body having a box-shaped cross section is manufactured by assembling and welding a long steel plate for a flange and a steel sheet for a web into a box-shaped cross section on a manufacturing line of a factory. Is manufactured as a structure having a simple box-shaped cross section before a connection member or the like is finally attached to the side surface. For example, a continuous box structure manufacturing apparatus disclosed in JP-A-2-268968 Can be efficiently produced on a dedicated production line such as

A columnar body having a box-shaped cross section manufactured by the continuous manufacturing apparatus as described above becomes a final product by attaching a plurality of connection members to a side surface as a final step. In the work of welding the connection member to the side of the columnar body with a box-shaped cross section, the columnar body itself is manufactured in a horizontal horizontal state on a production line such as a continuous manufacturing apparatus, so the columnar body remains in a horizontal horizontal state A method in which the connection member is horizontally applied to the side surface of the column in a direction perpendicular to the axis of the column, and a worker welds a contact surface between one end of the connection member and the column. Depending on.

[0004] Since the connection member welded to the columnar body may protrude equally in the periphery of the cross section of the columnar body, that is, in the direction of 360 degrees, the columnar body is partially welded. In a state in which both ends are sandwiched by a pair of rotatable left and right circular positioners so that the connection member may protrude downward, the connection member is supported horizontally at a predetermined height from the ground and in a horizontal state. After welding the connecting member vertically on the surface, the positioner is rotated, so that another connecting member is welded to another surface of the columnar body.

[0005] As described above, the conventional work of welding a connecting member to a columnar body is such that even when the columnar body is rotated, the connecting member having a predetermined length welded to a part of the columnar body faces downward. Since the pillars are supported horizontally by the positioner at a predetermined height from the ground so that they can protrude,
As a matter of course, the worker for welding the connection member must also perform the welding work at a predetermined height where the columnar body is arranged horizontally, and therefore, assemble pipes on both sides of the columnar body. A plurality of sets of movable work scaffolds made as described above are arranged, and while the scaffold is moved in accordance with the attachment position of the connection member, a worker performs welding work on the scaffold.

[0006]

However, since the condition of the column, such as the number, shape, and mounting position of the connecting members, differs depending on the design of the building to be constructed, the height of the column is as described above. In the method in which a work scaffold is provided at the position and the worker gets on the scaffold and welds the joint member, the work is performed every time the welding work conditions such as the shape and mounting position of the joint member of the columnar body differ. The work scaffold must be frequently moved or reassembled in some cases, resulting in poor workability and no improvement in production efficiency.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to efficiently perform a conventional welding operation of a connecting member to a columnar body. A workbench for welding a plurality of connection members and the like to the side surfaces of the columnar body while horizontally supporting the columnar body having a box-shaped cross section. On both sides of the column supported so as to be rotatable around the center, the columns are arranged so that they can approach or separate from each other in a direction perpendicular to the length direction of the column. A pair of decks having a height so as to be located on both side portions of the columnar body are provided so as to be movable along the length direction of the deck in a state of protruding toward the columnar body inside the upper surface of the deck. Multiple supported work platforms For example, characterized in that is.

According to a second aspect of the present invention, the decks arranged on both sides of the column each move on a rail in a direction perpendicular to the longitudinal direction of the column, and from both sides of the base from the base. A plurality of working scaffolds, each of which has an upper surface provided at a height so as to be located at a portion thereof, and which projects inside the upper surface of the deck, has an upper end engaged with an inner groove of the upper surface of the deck, and a lower end formed of the deck. It is movably supported on a rail provided along the length direction of the inner base.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of a welding worktable according to the present invention will be described with reference to an embodiment shown in the drawings. FIG. 1 is a plan view of a horizontal welding worktable according to the present invention, and FIG. A-
FIG. 3 is a side view of a horizontal welding worktable, which is supported in a horizontal state with both ends sandwiched by circular positioners 2 as shown in FIGS. 1 and 3. Pair of decks 3 arranged on both sides of the columnar body 1
a and 3b.

As shown in FIG. 5, the positioner 2 supporting both ends of the columnar body 1 is composed of an openable and closable semicircular member 4 mounted on a pair of drive rollers 5 and rotated. Then, the columnar body 1 manufactured by the adjacent non-illustrated manufacturing line was carried on one semicircular member 4 opened by a crane, and both ends of the columnar body 1 were respectively opened. After being correctly arranged at the center of the inside of one semicircular member 4, the other semicircular member 4 is closed to firmly clamp the center of both semicircular members 4 via the jack 6 or the like. When the driving roller 5 is rotated, the columnar body 1 rotates in a 360-degree direction about the axis.

On the other hand, the pair of decks 3a and 3b arranged on both sides of the columnar body 1 have a length substantially the same as the length of the columnar body 1, and each of the decks 3a and 3b A base 8 is moved on a rail 7 provided in a perpendicular direction so as to approach or separate from the columnar body 1 by wheels 23 rotated by a drive motor (not shown), and a column 9 on the base 8. And an upper surface 10 provided at a height so as to be positioned on both sides of the columnar body 1 supported by the positioner 2. These decks 3a, 3
b, projecting in the form of a bracket in the direction of the columnar body 1 inside the upper surface 10, respectively, and extending along the inner side of the upper surface 10.
A plurality of work scaffolds 11 each having a short width and supported so as to be movable along the length direction of the work are provided.

As shown in FIG. 4, the work scaffold 11 is provided with rollers 12 provided at the upper ends of the base ends thereof.
While being engaged with the concave groove 13 provided on the inner lower surface of the
A roller 14 at the lower end is movably supported on a rail 15 provided along the longitudinal direction of the deck above the base 8 inside the decks 3a and 3b. Work scaffold 11 according to mounting position
Is manually moved along the inside of the upper surface 10 to a position suitable for welding work, and then the lever-type locking device 17 is operated to press the locking projection 18 against the upper surface 10 to thereby obtain a predetermined pressure. It can be fixed in position.

An elevating ladder 19 is provided between the base 8 and the upper surface 10 of the decks 3a and 3b, and a handrail 20 is provided on the upper surface 10. Further, in this embodiment, the work scaffold 11 provided inside the upper surface 10 can be manually moved to a position suitable for the welding work, but the work scaffold 11 is, for example, as shown in FIG. A horizontal screw rod 21 is provided inside,
A nut 22 fixed to the lower surface of the work scaffold 11 may be screwed into the screw rod 21, and the screw scaffold 21 may be rotated by a motor (not shown) so that the work scaffold 11 can be automatically moved.

When welding the connection member 16, first, the columnar body 1 is clamped to the positioner 2 as described above while the decks 3a and 3b on both sides are moved along the rails 7 so as to widen the respective gaps. Support and then this positioner 2
To make the surface on which the connection member 16 is to be attached horizontal.

Next, the decks 3a and 3b on both sides are appropriately moved and adjusted so as to reduce the distance between the decks 3a and 3b.
After moving along the length direction of the deck so as to match the predetermined position of the connection member 16 to be attached from now on, the locking projection 18 is pressed against the upper surface 10 by the locking device 17 to firmly attach the work scaffold 11. After being fixed to the decks 3a and 3b, the connection member 16 is suspended by a crane at a predetermined position on the horizontal surface of the columnar body 1 and placed vertically.
An operator stands on the work platform 11 from the upper surface 10 and welds the lower end of the connection member 16 to the surface of the columnar body 1.

After the welding of the connection member 16 attached to the surface of the columnar member 1 is completed, the positioner 2 is rotated to level another surface of the columnar member 1 for mounting another connection member 16. Then, the connection member 16 is welded in the same manner as described above, and thereafter the connection member 16 is sequentially attached by the same procedure. After the welding of all the connection members 16 to the columnar body 1 is completed in this way, the decks 3a and 3b on both sides are moved so as to widen the gap, and the semicircular members 4 of the positioner 2 are moved.
Is opened to both sides, and the columnar body 1 is taken out of the machine by a crane.

[0017]

According to the workbench of the present invention, the upper surface 10 is positioned on both sides of the horizontally supported columnar body 1 so that the upper surface 10 is positioned on both sides of the columnar body 1 and is parallel to the columnar body 1. The pair of decks 3a and 3b are arranged so as to be able to approach or separate in a direction perpendicular to the longitudinal direction of the columnar body 1, so that when the columnar body 1 is taken in and out, the gap between the two decks 3a and 3b is opened. Thus, the operation of mounting and removing the columnar body 1 to and from the positioner 2 can be performed safely.

By moving the decks 3a and 3b so as to close the gap therebetween, the distance between the upper surface 10 and the columnar body 1 approaches the distance of about the length of the connection member 16, so that the worker can move the upper surface 10 down. Since the welding work can be performed while freely moving from one end to the other along the length direction of the columnar body 1 by using the work, the work can be performed in comparison with the conventional welding work in which the assembling scaffold is partially installed. Can be performed safely and efficiently.

Inside the upper surface 10 of each of the decks 3a and 3b, a plurality of supporters are provided so as to be movable along the length direction of the decks 3a and 3b in a state of protruding toward the columnar body 1. Since the work scaffold 11 is provided, the welded connection member 16 projects sideways from the columnar body 1, so that even if a predetermined interval exists between the deck upper surface 10 and the columnar body 1, By moving the work scaffold 11 projecting from the upper surface 10 in the direction of the columnar body 1 to a position near the attachment position of the connection member 16, the worker can freely move from the deck upper surface 10 onto the work scaffold 11. , This work scaffold 11
The welding work of the connection member 16 can be performed by using the work scaffold 11, so that the welding work can be performed in a preferable posture in which an appropriate welding effect can be obtained by the work scaffold 11, and it is possible to contribute to the production of high quality products. .

[Brief description of the drawings]

FIG. 1 is an overall plan view of a working table for horizontal welding according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is an overall side view.

FIG. 4 is a partially enlarged cross-sectional view showing a configuration of a deck upper surface and a work scaffold.

FIG. 5 when the columnar body is attached to the worktable for final welding.
Sectional drawing of the same part as.

FIG. 6 is a perspective view showing another embodiment of the configuration of the deck upper surface and the work platform.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields investigated (Int.Cl. ⁶ , DB name) B23K 37/00 B23K 9/00 501 B23K 37/047 501 B66F 9/00-11/04 E04G 1/00- 3/00

Claims (2)

(57) [Claims] 1. A work table for welding a plurality of connection members and the like to a side surface of a columnar body in a state where the columnar body having a box-shaped cross section is horizontally supported, and both ends of which are sandwiched by a positioner. On both sides of the columnar body supported so as to be rotatable about the axis in a horizontal state, the columnar bodies are arranged so that they can approach or separate from each other in a direction orthogonal to the length direction of the columnar body. A pair of decks having a height parallel to the body and positioned on both sides of the columnar body, and along the length direction of the deck protruding toward the columnar body inside the upper surface of the deck. A horizontal welding workbench comprising a plurality of work scaffolds movably supported. 2. The system according to claim 1, wherein the decks arranged on both sides of the columnar body move on rails perpendicular to the longitudinal direction of the columnar body, and are located on both sides of the columnar body from above the base. A plurality of working scaffolds, consisting of an upper surface provided at different heights and protruding inside the upper surface of this deck,
2. The horizontal welding worktable according to claim 1, wherein an upper end is engaged with an inner groove on the upper surface of the deck, and a lower end is movably supported on a rail provided along a length direction of the base inside the deck.