JPS6320726Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a purlin attachment device used for constructing a three-dimensional truss structure.

In a structure in which truss members are connected using a ball joint,
When attaching a purlin, a conventional structure has been used in which a thread is cut in the upper part of the ball joint, a bracket is bolted directly to this, and the purlin is fixed to this bracket. In this case, errors during installation are dealt with by making the mounting holes for bolt tightening drilled in the purlin material and the bracket long holes. However, this alone limited the range of adjustment and was difficult to install.

Therefore, in this invention, a countersunk head bolt with a metal fixing material interposed is fixed to the upper part of the truss ball joint, and a bracket for attaching the purlin material is fixed to the countersunk head bolt, thereby devising a purlin mounting device. This simplified construction and made it easier to deal with errors during installation.

Hereinafter, the purlin attachment device of this invention will be explained based on illustrated embodiments.

Fig. 1 shows an embodiment of the purlin mounting device of this invention, in which a countersunk bolt 2 is fixed to the upper part of a truss ball joint 1, and a bracket 3 having an L-shaped cross section is attached to the countersunk bolt 2 at the top and bottom. It is clamped and fixed with nuts 8 and 9.

As shown in FIG. 2, a metal fixing material 4 is fitted in advance to the outer periphery of the head of the countersunk bolt 2, and is pushed into the bolt insertion hole provided in the ball joint 1. Next, when the nut 6 screwed into the bolt is tightened through the washer 5, the head of the countersunk bolt 2 is pulled up relatively, and the tip of the metal fastening material 4 is deformed. The countersunk bolt 2 is mechanically fixed to the ball joint 1.

In addition, in order to help the deformation of the metal fixing material 4, as shown in FIGS. 3a and 3b, cut grooves 7a are provided in advance in the vertical direction, and grooves 7b are provided in the circumferential direction.
It is conceivable to set up

In the embodiment shown in FIG. 1, lip channel steel is used as the purlin material 10, and the retaining plate 11 inserted into the inner space and the bracket 3 are connected by retaining bolts 12.
The purlin material 10 is clamped by tightening with.

The stop plate 11 is a flat member having a bolt insertion hole, and is slidable in the longitudinal direction in the inner space of the purlin material 10. Therefore, the bracket 3 can be freely fixed at any position in the longitudinal direction of the purlin 10. Furthermore, if the corresponding bolt insertion hole of the bracket 3 is made into a long hole, the installation height can be adjusted to some extent even at the stop bolt 12 portion.

FIGS. 4 to 7 each show different embodiments.

In the embodiment shown in FIG. 4, a purlin member 13 is attached, which is made by joining two rib channel steel members back to back and tightened with bolts and nuts, and the other construction is the same as the embodiment shown in FIG. 1.

The embodiment shown in FIG. 5 has a bracket 14 having a U-shaped cross section.
This is a purlin material 15 made by joining two pieces of rip channel steel back to back.
be held between the brackets 14,
The main building material 15 is fixed by a longitudinally slidable stop plate 11 and a stop bolt 12 in the internal space.

The embodiment shown in FIG. 6 has upper and lower brackets 16 and 17.
The two members of the purlin material 18 are held together by the two members. A long nut 19 is attached to the upper bracket 16.
are fixed together, and a long countersunk head bolt 20
After fixing the upper bracket 16 to the upper bracket 16, it can be tightened with the lower nut 9.

In the embodiment shown in FIG. 7, the bolt mounting hole is connected to the spherical seat 22 for mounting the bracket 21 and the countersunk bolt.
It can be mounted at an angle in any direction on the outer circumference. Although not shown, in the embodiment shown in FIG. 1, a tapered washer may be used alone or two taper washers may be stacked between the nut 9 and the bracket 3 for inclined mounting.

Figures 10a and 10b schematically show the installation of roofing materials using the purlin attachment device of this invention, in which the rods 23 of the truss are connected with the ball joint 1, and the purlins 10 are attached. Then, the roofing material 24 is placed thereon. Further, if necessary, the purlin material 10 can be attached to the middle of the rod material 23 using the band hardware 25.

Figures 8, 9a and 9b show these details, and the band hardware 25 is made of two parts and is attached by inserting the truss rod 23 into the hollow part. . And band hardware 2
A bolt 26 is attached to the upper member of the bracket 5, and the bracket 3 can be fixed to the bolt 26 using nuts 8 and 9.

This invention consists of the above-mentioned structure, and it is possible to easily attach a countersunk head bolt to the head of a ball joint with one touch, and it is also possible to easily adjust the height of the bracket by operating the nut, and to securely fix it. .
Therefore, construction can be completed more quickly, unnecessary work is avoided, and safety in working at heights is improved.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the device of this invention, Fig. 2 is a longitudinal sectional view showing the state of the countersunk bolt before it is fixed to the ball joint, and Figs. 3a and 3b are the metal fixing materials. Front view (the left half is a vertical cross-sectional view), Figures 4 to 7 are vertical cross-sectional views showing other embodiments, and Figure 8 is a front view (partial vertical cross-sectional view) showing the mounting state of the ball joint part. , Fig. 9a is a front view (partial longitudinal sectional view) showing the installation state of the truss rod part, Fig. 9b is a side view thereof, and Figs. 10a and 10b are schematics of the installation of the roofing material. FIG. DESCRIPTION OF SYMBOLS 1... Ball joint, 2... Countersunk bolt, 3... Bracket, 4... Metal fixing material, 5... Washer, 6... Nut, 7a... Notch groove, 7b...
Concave groove, 8, 9... Nut, 10... Purlin material, 11
... Stopping plate, 12 ... Stopping bolt, 13 ... Purlin material, 14 ... Bracket, 15 ... Purlin material, 1
6, 17... Bracket, 18... Purlin material, 19
... Nut, 20 ... Countersunk bolt, 21 ... Bracket, 22 ... Spherical seat, 23 ... Rod material, 24 ...
...Roofing material, 25... Band hardware, 26... Bolt.

Claims (1)

[Scope of utility model registration request] A countersunk head bolt with a metal fixing material interposed on the outer periphery of the head is inserted into a bolt insertion hole drilled in the upper part of the truss ball joint, and the nut is tightened while restraining the rotation of the countersunk bolt, thereby removing the metal fixing material. A purlin attachment device characterized in that a countersunk head bolt is fixed to the upper part of a truss ball joint by deformation of the material, and a bracket for attaching the purlin material is secured to the flat head bolt by being clamped from both sides with nuts.