JP2006348740A - Long-sized member assembling method and assembling tool for use in the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a long-sized member assembling method and an assembling tool for use in the method for inexpensively constructing an assembled structure with a fine joint part by joining the end faces of long-sized members in the mutually butting state even in the case of using pipe members as the long-sized members. <P>SOLUTION: The long-sized member assembling method and the assembling tool are provided for assembling a plurality of long-sized members 3 intersecting at predetermined angles, by joining them in the mutually butting state of the end faces. In the assembling method, the plurality of long-sized members 3 are supported by the assembling tool J capable of supporting them at the predetermined angles, and the assembling tool J is swung in vertical and lateral directions to adjust the attitudes of the long-sized members 3 and to butt-join the mutual end faces of the long-sized members 3. The tool comprises a tool body 10 having a support part 11 capable of supporting the plurality of long-sized members 3 at the predetermined angles, and a swing means Y for swinging the tool body 10 in the vertical and lateral directions. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for assembling a long material that is assembled by joining end surfaces of a plurality of long materials that intersect at a predetermined angle in a state of being attached to each other, and an assembling jig used in the method.

As such a long material, for example, there is a truss member, which can be implemented when assembling a building truss structure with the truss member, but a pipe material is often used as a truss member at a predetermined angle. Conventionally, it has been considered very difficult to join end surfaces of a plurality of intersecting pipe members in a state of being brought into contact with each other.
That is, in order to bring the end faces of pipe materials that intersect at a predetermined angle to each other, it is necessary to cut the end faces of the pipe material with three-dimensionally complicated shapes and angles. However, as an actual problem, it is very difficult to cut the end face of the pipe material with a complicated shape and angle as desired, and conventionally, an alternative means to replace the butt joint of the pipe material has been adopted.

For example, conventionally, using a hollow joint member in which two plate-like members having a circular plan view and a semi-elliptical front view are welded on top of each other, one end of a pipe member is welded to the joint member, That is, an alternative means is known in which a special joint member is used and pipe members are joined by welding via the joint member (see, for example, Patent Document 1).
In addition, a special holding member that has a slit-shaped insertion window or insertion notch around it is used, and the end of the pipe material is crushed into a flat plate portion. The flat plate portion is held from the insertion window or the insertion cut-out. An alternative means for joining the flat plate portions of the pipe material by electroslag welding in a state of being inserted into the pipe is also known (for example, see Patent Document 2).

Japanese Patent Laid-Open No. 6-200562 JP 2001-173090 A

However, any of the above-described conventional techniques has various problems because the end faces of the pipe material are not directly joined to each other.
For example, in the prior art disclosed in Patent Document 1, a special joint member is required, and the weld length for joining is increased due to the intervention of the joint member, resulting in higher costs. However, since the joint member is exposed, there is a disadvantage that the appearance is inferior.
Moreover, in the prior art disclosed in Patent Document 2, in addition to requiring a special holding member, it is necessary to crush the end portion of the pipe material into a flat plate portion, and further, welding for joining is also performed. Since it is limited to special ones such as electroslag welding, there is a disadvantage that the cost is considerably increased and the appearance is inferior.

  The present invention has been completed by paying attention to such conventional problems and the high performance of machine tools in recent years, and its purpose is long even when a pipe material is used as a long material. To provide an assembling method for a long material and an assembling jig to be used for the method, which can be joined in a state where end surfaces of the length materials are brought into contact with each other, and an assembled structure with a beautiful joining portion can be constructed at low cost. It is in.

  A first characteristic configuration of the present invention is a method for assembling a long material in which end faces of a plurality of long materials intersecting at a predetermined angle are joined and assembled together, and the plurality of long materials are assembled. The material is supported by an assembly jig that can be supported at the predetermined angle, and the posture of the long material is adjusted by swinging the assembly jig in the vertical direction and the horizontal direction, and the end surfaces of the long material are adjusted. It is in the place where it joins together.

According to the first characteristic configuration of the present invention, a plurality of long materials are supported by an assembly jig that can be supported at a predetermined angle, and the assembly jig is swung in the vertical direction and the horizontal direction to make it long. Since the posture of the material is adjusted, even if the long material is a pipe material, it becomes possible to match the end surfaces of the long material as desired.
For example, even if the long material is a pipe material, the end face shape of a long material having a complicated shape or angle can be drawn as desired by using the rapidly developing 3D CAD in recent years. By using a high-performance 3D laser processing machine and cutting the long material based on the shape of the end face, it is possible to somehow match the long materials that have been considered difficult in the past. The long material is supported by an assembly jig that can be supported at a predetermined angle, and the jig is moved up and down and laterally to adjust the posture of the long material. Are joined together, and the end faces of the long material can be joined as desired.
As a result, when using various types of steel, including pipe materials, as long materials, assembly of beautiful long materials at the joints without the need for special joint members and holding members as in the past. The structure can be constructed at a low cost.

  According to a second characteristic configuration of the present invention, in the method according to the first characteristic configuration, the long material is a truss member, and the end surfaces of the truss member are joined together by welding to assemble the building truss structure. is there.

  According to the second characteristic configuration of the present invention, the long material is a truss member, and the end surfaces of the truss member are joined together by welding to assemble the building truss structure. A beautiful building truss with a welded portion can be constructed at low cost without the need for members.

  According to a third characteristic configuration of the present invention, in the method according to the second characteristic configuration, the truss member is a pipe material.

  According to the third characteristic configuration of the present invention, since the truss member is a pipe material, it has a cross-sectional performance in the same direction as that of a steel mold and the like. Can be built.

  A fourth characteristic configuration of the present invention is a long material assembling jig used to join and assemble end surfaces of a plurality of long materials intersecting each other at a predetermined angle, The assembling jig includes a jig main body having a support portion capable of supporting the plurality of long materials at the predetermined angle, and a swinging means for swinging the jig main body in the vertical direction and the horizontal direction. By the way.

  According to the fourth characteristic configuration of the present invention, there is provided a long material assembling jig used for joining and assembling in a state where end surfaces of a plurality of long materials intersecting at a predetermined angle are attached to each other. Since the jig main body having a support portion that can support a plurality of long materials at a predetermined angle and the swinging means for swinging the jig main body in the vertical direction and the horizontal direction are provided, the first characteristic configuration described above is provided. As mentioned above, a swinging means is formed by cutting a plurality of long materials using a three-dimensional CAD or a 3D laser processing machine, and supporting the long materials on the support portion of the jig body. By swinging the jig main body in the vertical direction and the horizontal direction, even if the long material is a pipe material, the end surfaces of the long material can be reliably brought together and joined as desired.

  According to a fifth characteristic configuration of the present invention, in the jig according to the fourth characteristic configuration, the jig main body is movable on a cart in a lateral direction via an elevating device that moves the jig main body up and down. The swinging means is constituted by the carriage and the lifting device.

  According to the fifth characteristic configuration of the present invention, the jig body is placed on a carriage that is movable in the lateral direction via an elevating device that raises and lowers the jig body in the vertical direction. Since it is constituted by the carriage and the lifting device, the end surfaces of the long materials can be reliably joined to each other by the swinging means having a relatively simple configuration including the lifting device and the carriage.

Embodiments of an assembling method for a long material according to the present invention and an assembling jig used in the method will be described with reference to the drawings.
This long material assembling method and jig are for constructing, for example, a roof truss, which is an example of a building truss structure. As shown in FIG. The upper chord material frame 1, the lower chord material 2 positioned below, and the pipe material 3 as a truss member that is an example of a long material that connects the upper chord material frame 1 and the lower chord material 2 to each other.
The upper chord material frame 1 is assembled by assembling a rectangular H-shaped steel 1a as a truss member, which is an example of a long material, by bolting or welding. If necessary, a reinforcing bar 1b is also joined by bolting or welding. The lower chord material 2 is composed of a rectangular pipe material having a rectangular cross section, and the pipe material 3 is composed of a round pipe material having a circular cross section.

In the H-shaped steel 1a and the pipe material 3 as the truss members, the H-shaped steel 1a assembled in the shape of the “field” in a plan view, and the six pipe materials 3 arranged obliquely and the 1 arranged in the vertical direction A truss composed of a pipe material 3 is used as one unit truss T, and many of the unit trusses T are joined, or unit trusses T and flat trusses (not shown) are joined every other roof. Truss RT is configured.
In each unit truss T, a total of seven pipe members 3 of six pipe members 3 arranged obliquely and one pipe member 3 arranged in the vertical direction intersect at a predetermined angle. The lower ends of the pipe members 3 are in contact with each other and are also attached to the lower chord member 2, and the lower ends are joined together by welding. Even it is joined by welding.

In such a unit truss T, the lower ends of a total of seven pipe members 3 are joined together by butt welding, whereas the upper ends of each pipe member 3 are H-shaped steels that are other truss members. It is bolted to 1a. That is, as shown in detail in FIG. 7, a slit 4 is provided at the upper end of each pipe member 3, and a plate member 5 is inserted into the slit 4 and welded, while a plate member 6 is welded to the H-shaped steel 1a. In addition, a plurality of bolt holes 5a are formed in the plate material 5 on the pipe material side, and a plurality of bolt holes 6a are also formed in the plate material 6 on the H-shaped steel side.
Then, in a state where the two plate members 5 and 6 are put together, a pair of auxiliary plate members 7 extending between the two plate members 5 and 6 are arranged on both sides of the two plate members 5 and 6, and bolt holes 7 a drilled in both auxiliary plate members 7 and Bolts 8 are respectively inserted through the bolt holes 5 a of the plate material 5, the bolt holes 7 a of both the attached plates 7, and the bolt holes 6 a of the plate material 6, and are fastened by nuts 9 to be bolted.
Each bolt hole 5a, 6a, 7a has a relatively large diameter or a long hole with respect to the diameter of the bolt 8.

The lower end portion of the total seven pipe members 3 described above has a relatively complicated shape and angle for butt welding, but by using a three-dimensional CAD, the end face shape is set as desired. It is possible to draw, and by using a 3D laser processing machine, the lower end portion of each pipe member 3 can be easily cut along the shape of the end face. Furthermore, a special assembling jig J is used to assemble the unit truss T with the pipe material 3 and the H-shaped steel 1a.
As shown in FIG. 5, the assembling jig J includes six support portions 11 that can freely support six pipe members 3 arranged diagonally out of a total of seven pipe members 3 at a predetermined angle. As shown in FIG. 4, the jig body 10 is placed on a carriage 13 via an elevating device 12 configured to be movable up and down by a cylinder or the like (not shown). ing. A total of four wheels 14 are attached below the carriage 13 and placed on a pair of rails 15. The carriage 13 is configured to be movable along the rails 15 in the lateral direction. The carriage 13 constitutes swing means Y that swings the jig main body 10 in the vertical direction and the horizontal direction.

Next, a procedure for assembling the unit truss T using the assembling jig J will be described with reference to FIGS.
First, as shown in FIG. 2, the H-shaped steel 1a and the bar 1b are assembled and welded, the upper chord material frame 1 having a predetermined shape is grounded, and the lower chord material 2 is placed on the lower chord material frame 17, As shown in FIG. 3, the upper chord material frame 1 is placed on the upper chord material frame 16, and the assembly jig J is installed below the lower chord material 2 as shown in FIG. 4.
Thereafter, the ascending / descending device 12 of the assembling jig J is once lowered, the plate material 6 previously attached to the H-shaped steel 1a, the plate material 5 attached to the upper end portion of each pipe material 3, the accessory plate material 7, the bolt 8 and the nut 9 Are used to loosely temporarily fix the upper ends of the seven pipe members 3 to the H-shaped steel 1a of the upper chord member frame 1, and the six pipe members 3 and the lower chord member 2 that are arranged obliquely are shown in FIG. 5 (a) and 5 (b), the support unit 11 of the jig body 10 is supported.

In that state, the end surfaces of the lower end portions of the pipe members 3 are not necessarily in a state in which butt welding is possible, but rather in a state in which butt welding is impossible.
Therefore, the jig body 10 is moved up and down about 2 to 3 times by the lifting device 12. Since the upper end of each pipe member 3 is only loosely temporarily fixed to the H-shaped steel 1a during the vertical movement, each pipe member 3 is in a state in which the posture can be freely adjusted, and the jig body 10 is also moved by the carriage 13. The total of seven pipe members 3, particularly the six pipe members 3 arranged obliquely, as shown in FIG. 5B, are supported by the support portion of the jig body 10. 11 is adjusted so that the end faces of the pipe members 3 can be butt-welded.
Thereafter, if necessary, the pipe material 3 is temporarily fixed also to the adjacent upper chord material frame 1, and the end faces of the pipe materials 3 are butt-welded for the pipe material 3 adjusted so as to be able to mate. At the same time, the bolts 8 and the nuts 9 are firmly tightened, and the upper ends of the pipe members 3 are fixed to the H-shaped steel 1a and assembled into the unit truss T shown in FIG.

[Another embodiment]
(1) In the previous embodiment, the H-shaped steel 1a was shown as the truss member constituting the upper chord member frame 1, and the round pipe member 3 was shown as the truss member connecting the upper chord member frame 1 and the lower chord member 2. As the truss member, it is possible to implement various shapes of steel shapes and square pipe materials including H-shape steel and round pipe materials.
Moreover, although the example which constructed | assembled the roof truss RT which is a building truss structure using the truss member which is an example of a elongate material was shown, the object of this invention is construction truss structures especially for roof truss RT etc. The present invention is not limited to this, and can be carried out when assembling long materials in various fields other than architecture.

(2) In the previous embodiment, the example in which the swinging unit Y is configured by the lifting device 12 and the carriage 13 has been described. However, the swinging unit Y may be configured by various devices other than the lifting unit 12 and the carriage 13. Further, the lifting device 12 is not particularly limited to the cylinder, and the lifting device can be configured by a rack and a pinion, for example.

Perspective view of the building truss structure viewed from below Perspective view showing assembly process of building truss structure Perspective view showing assembly process of building truss structure Side view showing assembly process of building truss structure The perspective view which shows the effect | action in the assembly process of the truss structure for construction Perspective view showing assembly process of building truss structure Sectional view showing bolt connection of truss member

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a Truss member which is an example of elongate material 3 Pipe material as a truss member which is an example of elongate material 10 Jig body 11 Support part 12 Lifting device 13 Carriage J Assembly jig Y Swing means

Claims (5)

A method for assembling a long material that is assembled by joining and assembling end surfaces of a plurality of long materials intersecting each other at a predetermined angle,
The plurality of long materials are supported by an assembly jig that can be supported at the predetermined angle, and the posture of the long material is adjusted by swinging the assembly jig in the vertical direction and the horizontal direction, A method for assembling long materials in which the end surfaces of long materials are joined together.   The method for assembling a long material according to claim 1, wherein the long material is a truss member, and end faces of the truss member are joined together by welding to assemble the building truss structure.   The long material assembling method according to claim 2, wherein the truss member is a pipe material. A long material assembling jig used for joining and assembling in a state where end surfaces of a plurality of long materials intersecting each other at a predetermined angle are attached to each other,
The assembling jig includes a jig main body having a support portion capable of supporting the plurality of long materials at the predetermined angle, and a swinging means for swinging the jig main body in the vertical direction and the horizontal direction. Jig for assembling long materials.   The jig body is placed on a carriage that is movable in the lateral direction via a lifting device that raises and lowers the jig body in the vertical direction, and the swinging means is constituted by the carriage and the lifting device. The long material assembling jig according to claim 4.

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