JPS6229555Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in joints for poles, such as concrete utility poles.

Conventional joints of this type are those in which one pole end and the other pole end to be connected are joined with metal fittings fixed respectively, or one pole end and the other pole end are respectively joined by welding. It has been proposed to connect fixed flanged metal fittings with bolts or nuts. However, all of these methods have drawbacks such as requiring a lot of complicated work on site, poor strength, and poor appearance.

The purpose of the present invention is to eliminate the drawbacks of the prior art,
To provide a pole joint that can be connected easily with little work on site and has excellent rigidity and appearance.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 to 4 show an embodiment of a joint according to the present invention, and this joint includes first and second mating fittings 5, 6 and a connecting fitting 16. As shown in FIG.

The first mating fitting 5 is provided with reinforcing bar through holes at intervals of 18 degrees on the circumference, as shown in FIG. 7 is formed, and the first pole 1 and the first mating fitting 5 are fixed by passing the reinforcing bars 3 through the reinforcing bar through holes 7, for example, by welding parts 9. Further, an annular protrusion 11 is integrally formed on the first mating fitting 5 on the mating surface with the second mating fitting 6, and a connecting fitting 16 is formed at the bottom of the annular protrusion 11 as shown in FIG. Screw holes 13 are formed at positions close to the first and second units 17, 18 and at positions spaced apart by about 50 degrees on the arc connecting these positions.
Further, a guide member 15 for alignment with the second mating metal fitting 6 is attached to the inside of the first mating metal fitting 5, and the guide member 15 is formed in an arc shape and is spaced at equal intervals on the circumference. It is welded with

On the other hand, the second mating fitting 6 has a circumferentially 18-inch metal fitting 6 that matches the arrangement of the reinforcing bars 4 of the second pole 2 to be connected, which is the upper column.
Reinforcing bar through holes 8 are formed at intervals of
The pole 2 and the second fitting 6 have reinforcing bar through holes 8.
The reinforcing bars 4 are passed through the steel plate 4 and fixed by a welded portion 10, for example. This second fitting 6 has an annular protrusion 12 integrally formed on its mating surface with the first fitting 5, and an annular protrusion 12 is formed on the upper part of the annular protrusion 12 in a phase-aligned manner with the screw hole 13 of the first fitting 5. A screw hole 14 is formed by combining the two.

The connecting fitting 16 is divided into two in the circumferential direction and has a structure in which first and second units 17 and 18 are combined in an annular shape. Each of the first and second units 17, 18 has a first,
A fitting groove 19 is formed to tightly fit into the annular protrusions 11 and 12 of the second mating fittings 5 and 6.
A bolt through hole 20 that matches the screw hole 13 of the first mating fitting 5 is provided at the lower part of the fitting groove 9, and a bolt through hole 20 that matches the screw hole 14 of the second fitting fitting 6 is provided at the upper part of the fitting groove 19. A hole 21 is provided.

When connecting the first and second poles 1 and 2 using each member of the above-mentioned configuration, the first mating fitting 5 fixed to the first pole 1 and the second pole 2 are connected.
The second fitting 6 fixed to the guide member 1
5, and are aligned as shown in FIG. 1 and joined as shown in FIG. 2.

Next, the first and second connecting fittings 16 are attached to the joined annular projections 11 and 12 of the first and second mating fittings 5 and 6, respectively.
Fit the second units 17 and 18, pass the bolt 22 through the set of the screw hole 13 of the first mating fitting 5 and the bolt through hole 20 of the connecting fitting 16, and screw it into the second unit.
The bolts 23 are passed through the set of the screw holes 14 of the mating fittings 6 and the bolt through holes 21 of the connecting fittings 16, and are screwed in as shown in FIG. 3 to connect them.

In addition, in the present invention, the means for fixing the first and second poles 1 and 2 and the first and second mating fittings 5 and 6 is not limited to fixation through welding to the reinforcing bars 3 and 4 shown in the drawings, but may also be, for example, screws. It may be twisted and fixed. Furthermore, the joined annular protrusions 11 and 12 and the fitting groove 19 may be formed into tapered surfaces with an upward slope toward the center.

According to the present invention, the first and second poles are aligned using the guide member and the first and second mating fittings are joined at the site, and then the first and second mating fittings are connected to the first and second fittings. , attach the second unit, pass the bolts through the bolt holes of the first and second units, and screw these bolts into the screw holes of the first and second mating fittings to connect the first pole and the second unit. The connection work is extremely simple, and the connection time can be significantly shortened.
Also, the first and second units are connected to the first and second units.
Since the first and second units and the first and second fittings are fixed by a plurality of bolts arranged so as to surround the outer periphery of the fittings, the first and second units and the first and second fittings are arranged around the connection part. This has the practical benefit of being able to be tightened evenly and therefore increasing the strength of the connection.

[Brief explanation of the drawing]

1 and 2 are partially enlarged cross-sectional views of an embodiment of the present invention during assembly, FIG. 3 is a partially enlarged cross-sectional view of the assembled state, and FIG. 4 is a bottom view of the same assembled state. 1, 2...first, second pole, 5,6...first, second fittings, 11,12...first, second
Annular projection of mating fitting, 13, 14... Same threaded hole, 16... Connection fitting, 17, 18... First, second unit, 19... Fitting groove, 20, 21...
Bolt through holes of connection fittings, 22, 23...bolts.

Claims (1)

[Scope of utility model registration request] A first mating metal fitting fixed to an end of a first pole, and a second mating metal fitting fixed to an end of a second pole to be connected to the first pole and abutting against the first mating metal fitting. 2 mating fittings and these first
a connecting fitting that is arranged so as to surround the outer periphery of the matching fitting and the second fitting fitting to connect these fitting fittings, and a connecting fitting that is fixed to the first fitting fitting and the first fitting fitting and the second fitting fitting. a guide member for guiding the coupling of the first and second
The mating fittings have an annular protrusion projecting outward on their abutting surfaces, and the connecting fittings consist of a first unit and a second unit that are substantially divided into halves, each of which is connected to the first and second units. It has a fitting groove in which the annular protrusions of the second mating fitting are fitted with the annular protrusions abutted against each other, and the first unit and the second unit are provided with an interval in the circumferential direction. the first and second mating fittings have screw holes provided opposite to the bolt through holes, and the first and second units have a plurality of bolt through holes formed in A pole joint, characterized in that it is fixed to the first and second fittings by a bolt that is screwed into the screw hole through a hole.