JPH0246487Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hanger fixing device on a suspension bridge or the like.

Is it possible to establish bridge piers between straits, etc.?
Alternatively, suspension bridges are generally used as bridges spanning terrain where it is extremely difficult to establish piers.

However, as is well known, in a lever suspension bridge, main towers are established on land on both sides of a river, the sea, or a valley, and the main cable, with both ends anchored to the ground, is stretched through the top of the main tower. A stiffening girder is suspended by a hanger suspended from the main cable, and road or railway tracks are installed on the stiffening girder to form a bridge.

When the above-mentioned stiffening girder is suspended and installed on the main cable in this manner, the unit stiffening girder is formed in advance on land to a predetermined length, is carried to a hanging position, and is hung on a hanger.

Therefore, a large number of hangers are suspended at predetermined intervals from the main cable stretched from one main tower to the other.The hangers are composed of bands and wires, and the bands are The main cable is held between both sides by a pair of flat parts and curved central parts, and the upper and lower parts are fixed with bolts or other tightening means, and the lower flat part is further held by a bifurcated metal fitting. It is tightened with bolts, and the upper part of the wire is fixed to the lower part of the bifurcated metal fitting, so that the lower part of the wire is connected to the stiffening girder.

With this kind of structure, even if the upper and lower parts of the band are initially firmly tightened with bolts to prevent loosening, the main cable is installed at the highest point on both main towers, and gradually descends as it reaches the middle. Because the band that is attached to the main cable has a tendency to loosen due to long-term use, the band tends to move downward on the main cable. This caused all of the wires connected to the band to move toward the center, which was extremely dangerous.

In view of this, the present invention is designed to insert a hugging piece into the center of a plurality of child rope groups that make up the main cable, to enlarge the diameter of the main cable in this part, and to hug this swollen part. The purpose of this invention is to provide a hanger fixing device for a suspension bridge or the like to which a band can be attached, thereby solving the problems of the prior art.

Hereinafter, the present invention will be explained with reference to an embodiment shown in the drawings.

Generally, a suspension bridge has a main cable 2 installed between main towers 1 and 1, and a large number of hangers 3 as shown in Figure 1.
A stiffening girder 4 is suspended from the lower end of the hanger 3, and a road or railway track is installed on the stiffening girder 4.

The present invention involves inserting a holding piece 5 into the main cable 2 at the part where the hanger 3 is attached in a suspension bridge as shown in FIG. A band 6 portion constituting the hanger 3 is fixed to the hanger 3.

In other words, the main cable 2 usually has a plurality of child ropes 2.
It is composed of group a, and the holding piece 5 is inserted into the center of this group.

The holding piece 5 is a symmetrical round bar material of a predetermined length, which is formed into a tapered cylindrical shape that is thick at the center and becomes thinner toward both ends. The length and thickness are selected.

By partially inserting this piece 5 in the middle of the main cable 2, the main cable 2 becomes thickest at the point where the thick part in the longitudinal center of the piece 5 is inserted, and gradually becomes thinner on the left and right sides thereof.

The hanger 3 is made up of a band 6 and a wire 7. The band 6 is made up of a pair of left and right plate-shaped materials whose upper and lower sides are flat and whose middle part has a curved surface. When attached to the main cable 2, a plurality of bolt holes are bored in the upper and lower parts in parallel to the longitudinal direction of the main cable 2.

Therefore, the main cable 2 is held from both sides on the curved surface of the middle part of the band 6, and the band 6 is fixed to the main cable 2 by tightening means using bolts 8 and nuts 9 in the upper and lower bolt holes, and then The lower two plate parts of the band 6 are held between the forked parts of a forked socket 10, and bolts 11 are passed through both parts to fix the socket 10 to the band 6. At that time, there is a screw hole drilled at the bottom of the socket 10,
A screw threaded onto the upper part of the wire 7 is screwed into this hole, and the hanger 3 is suspended from the main cable 2.

A suspension bridge is then formed by suspending the stiffening girder 4 from the lower end of the wire 7 as described above.

In this process, when the hanger 3 suspended from the main cable 2 suspends the stiffening girder 4 and the hanging load increases, it attempts to move lower on the main cable 2, but the band The main cable 2 part of the attachment part 6 is attached to the holding piece 5 as described above.
Since the belt 6 of the hanger 3 is partially thickened, the attachment part of the band 6 of the hanger 3 is prevented from moving at this part, and cannot be moved downward even if the main cable 2 is inclined.

Therefore, the hanger 3 suspended in the conventional manner
The problem of moving on the main cable 2 is completely eliminated.

As explained above, the present invention involves inserting a tapered holding piece at both ends into the center of a group of multiple child ropes that make up the main cable, and using the swollen part to attach the main cable to a hanger or other strap. Because the band is clamped and suspended, the bulging part becomes an obstacle and prevents the band from moving on the main cable, allowing for stable installation.Although it has a simple structure, it solves the problems of conventional methods. It has an extremely excellent effect of eliminating the problem.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of a known suspension bridge, Figure 2a is a side view of the holding piece of the present invention, Figure 2b is a front view of the hanger fixing device of the present invention, and Figure 2c is Figure 2b. FIG. 1... Main tower, 2... Main cable, 2a... Child rope, 3... Hanger, 4... Stiffening girder, 5... Enclosing piece, 6... Band, 7... Wire.

Claims (1)

[Scope of utility model registration request] In a suspension bridge, etc., in which a number of hangers made of bands and wires are suspended on a main cable stretched between a plurality of main towers, and a stiffening girder is suspended from the lower part of the wires, the hanger At each part of the main cable to which the band is fixed, a tapered holding piece with both ends tapered is inserted into a plurality of child rope groups constituting the main cable, and the band is attached to the main cable. 1. A hanger fixing device for a suspension bridge or the like, characterized in that the thickness of the section is enlarged, and the band of the hanger is fixed onto the main cable by the enlarged section.