JPH0126824B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for manufacturing a truss structure.

As shown in FIG. 1, a pipe truss structure in which three main pipes 1, 9, and 10 are used as main members and branch pipes 2, 11, and 12 are used as branch members is lightweight but difficult to manufacture.

In conventional manufacturing, as shown in Figure 2, each main pipe 1,
Jigs 3, 4, 5, and 6 are used to support the pipes 9 and 10 and the branch pipes 2, 11, and 12 during assembly. In particular, the jigs 5 and 6 are inserted inside the truss structure.

Therefore, as shown in Figure 2, there are many receiving jigs inside the truss, so after assembly is completed, the various receiving jigs are dismantled, the assembled truss is lifted out, and the next truss structure is assembled. In this case, there was a drawback that the truss structure could not be assembled unless the various receiving jigs were reassembled. For this reason, it took time and effort to manufacture the truss structure.

An object of the present invention is to easily assemble a truss structure having a triangular shape when viewed from the front.

The main point of the present invention is that when assembling a triangular truss structure, by assembling it upside down, various receiving jigs are provided outside the truss, and the receiving jigs do not have to be assembled or dismantled after the truss structure is assembled. be.

An embodiment of the present invention will be described below with reference to FIGS. 3, 4, and 5.

A method for assembling a truss structure having a triangular shape when viewed from the front in an inverted manner is to place one main pipe 1 on a receiving jig 3, and then place branch pipes 2 on receiving jigs 7 and 8. Next, the main pipe 9 and the main pipe 10 are placed on the receiving jig 8. Furthermore, the branch pipes 11 and 12 are placed on the receiving jig 8, and the respective pipes are joined to complete the assembly.

Examples of jigs 7 and 8 for receiving various types of pipes will be explained.
FIG. 4 shows a receiving jig 7 that receives the lower side of the branch pipe 2, and the V-groove portion supports the branch pipe 2.
receive. FIG. 5 shows the receiving jig 8, and its configuration will be described below. Platform 1 on top of pillar 13
4, on the stand 14 there is a main pipe receiving part 15, a branch pipe 2
The branch pipe receiving part 16 supports the upper part of the pipe, the branch pipe receiving part 17 receives the branch pipe 11, and the branch pipe receiving part 18 receives the branch pipe 12. Branch pipe receiving part 18
has a hinge mechanism using a pin 19, and a stopper 20 supports this branch pipe receiving portion 18. When taking out the pipe truss structure upward from the receiving jig after pipe truss assembly is completed, if there is a branch pipe receiving part 18 above the branch pipe 2, the branch pipe 2 will be removed from the branch pipe receiving part 1.
8, but since the branch pipe receiving part 18 rotates upward around the pin 19 and escapes, it can be taken out without any obstruction. That is, after assembly is completed, by vertically lifting the assembled pipe truss structure using an overhead crane or the like, it becomes possible to take out various receiving jigs without dismantling it.

As described above, according to the present invention, a truss structure having a triangular shape when viewed from the front is assembled upside down, each truss structure member is supported from the outside, and each support can be large-sized without disassembling and reassembling each support. This makes it possible to significantly reduce the number of man-hours and produce the truss structure without much effort.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a pipe truss structure, Fig. 2 is a view of the manufacturing state of a conventional pipe truss structure as seen from the front of the pipe truss structure, and Fig. 3 is a fabrication of a pipe truss structure according to an embodiment of the present invention. The state is viewed from the front of the pipe truss structure, Fig. 4 is an enlarged view of the receiving jig 7 portion shown in Fig. 3, and Fig. 5 is an enlarged view of the receiving jig 7 shown in Fig. 3.
It is an enlarged perspective view of the receiving jig 8 shown in the figure. 1, 9, 10... Main pipe, 2, 11, 12... Branch pipe, 3, 7, 8... Receiving jig, 13... Pillar, 19
...Pin, 20...stopper.

Claims (1)

[Claims] 1. A main member is located at the apex of a triangle, branch members connecting each main member are arranged between each main member, and each branch member is connected to the main member at predetermined intervals in the axial direction. In a manufacturing device for a truss structure in which a plurality of branch members are connected at each connection position, the main member receiving portions of the three main members are provided in an inverted triangular arrangement, and the main member receiving portions are A plurality of branch member receiving portions for a plurality of branch members are provided near the above-mentioned inverted triangle, and a main member receiving portion and a branch member receiving portion at two points on the upper side of the inverted triangle are provided at the upper part of the pillar erected near the respective connection positions. , the pillar is provided outside the inverted triangle, and among the branch member receiving parts attached to the pillar, a branch member receiving part located at a position vertically overlapping with a lower branch member is provided so as to be movable in the vertical direction by a hinge mechanism. A truss structure manufacturing device, characterized in that a stopper is provided to support the branch member receiving portion from below.