JPH0314915Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a vibration suppression damper, in particular, for suppressing the vibration of the overhead line, which is one of the causes of noise generated by the overhead line, by attaching it to the overhead line. The present invention relates to a vibration suppression damper.

[Conventional technology]

Conventional methods for preventing noise from overhead lines include attaching preformed armor rods to the overhead lines, or installing rigid or plastic rings at multiple locations on the overhead lines. This prevents noise by preventing the Karman vortices that would otherwise occur.

In addition, as a vibration suppression damper for suppressing the vibration of overhead lines, each chamber of a divided metal body with multiple internal compartments of different sizes is used for wide-range high-frequency and low-frequency vibration isolation. It is already known that elastic bodies are housed symmetrically in each case (see Utility Model Publication No. 12118/1973). Considering that this is due to the generation of Karman vortices, the method used to exclusively prevent the generation of Karman vortices was to install preformed armor rods or rings as described above. . However, the noise caused by overhead lines is caused by the generation of Karman vortices and the vibrations of the overhead lines induced by it.
I discovered that it makes a lot of noise.

However, conventionally, there is no means to suppress the vibration of the overhead line itself, and furthermore,
With preformed armor rods, the anti-vibration effect decreases due to snow accumulation, increases in wind pressure, difficulty in processing and installation, and difficulty in responding to frequency characteristics.Furthermore, there are problems with corona characteristics. In addition, plastic rings have the problem that the area exposed to the wind is too small, making them less effective in preventing the generation of Karman vortices.

In addition, the conventional vibration suppressing damper that is attached to the overhead line by sandwiching the line between elastic bodies does not use weights, has a complicated structure, and is difficult to install. The problem was that it was difficult.

The purpose of this invention is to solve these problems and provide a vibration suppressing damper that is simple in structure and installation, and has a vibration suppressing effect using an elastic body using weights.

[Means for solving problems]

In order to achieve the above object, this invention sandwiches an overhead wire between a damper member made of an elastic body divided into at least two parts, and in a ring-shaped vibration suppressor attached to the overhead wire, a weight member is installed inside the elastic body. are buried evenly around the surrounding area.

[Effect]

Since the weight member is embedded evenly around the inside of the elastic body that constitutes the damper member, the elastic action of the elastic body between the weight and the overhead line absorbs and suppresses the vibration energy of the overhead line, and the vibration energy of the overhead line is suppressed. The generation of noise due to vibration can be prevented. In addition,
This vibration suppression damper has a variety of weight members and elastic bodies with different weights, materials (elasticity), and dimensions, and selectively uses those that have frequency characteristics and energy absorption characteristics suitable for the overhead line. It is.

〔Example〕

This invention will be explained below based on the drawings showing one embodiment of the invention.

In FIGS. 1 and 2, reference numeral 1 denotes this vibration suppressing damper, and the vibration suppressing damper 1 is divided into a plurality of damper members 1a, 1 divided into two parts, for example.
b, and is formed in a ring shape, for example, a circular ring shape.

The damper members 1a, 1b are weight members 2a,
2b, and elastic bodies 3a and 3b made of rubber or plastic are provided on the outer periphery of the elastic bodies 3a and 3b.
are fixedly attached to each other. The elastic bodies 3a, 3b may be fixed to the weight members 2a, 2b by adhering the elastic bodies 3a, 3b previously formed to the weight members 2a, 2b with an adhesive or the like; , weight members 2a, 2b
It may also be provided by molding.

Damper members 1a and 1b configured in this way
has engaging portions 5 and 6 on both sides of the divided portion so that the opposing ends engage with each other.
For example, on the left side in the figure, the engaging portions are constructed of elastic bodies 3a and 3b that are engaged by a pin 4 and rotated with each other to open the other end sides of the damper members 1a and 1b. A pin engaging portion 5 is provided on the right side, and a protruding portion 6 provided on the elastic body 3a of either one of the damper members 1a, 1b is provided on the right side.
a, and a protrusion 6a provided on the other elastic body 3b.
A groove-shaped engaging portion 6 is provided, which is formed by a groove portion 6b formed so as to fit and lock by being pushed into the groove portion 6b.

Further, the inner circumferential surfaces 7a, 7b of the elastic bodies 3a, 3b have a diameter necessary to clamp and fix the attached overhead wire 8.

Furthermore, the materials, weights, and dimensions of the weight members 2a, 2b and elastic bodies 3a, 3b are selected in accordance with desired frequency characteristics, absorption energy characteristics, and the like.

Since this embodiment is configured as described above, the elastic bodies 3a, 3b between the weight members 2a, 2b and the overhead wire 8 are compressed in response to the vibrations of the overhead wire 8 in each direction, and the elastic bodies 3a, 3b are compressed according to the vibrations of the overhead wire 8 in each direction. absorbs the vibration energy of the overhead wire 8 and suppresses the vibration. In addition, the damper members 1a and 1b in which the weight members 2a and 2b are embedded have a considerable size for vibration suppression, and these vibration suppression dampers 1 installed in large numbers in the span prevent the generation of Karman vortices. It also has the effect of In addition, in order to attach this vibration suppressing damper 1 to the overhead line 8, the groove-shaped engagement part 6 is disengaged, and both damper members 1a, centering around the pin 4 of the pin engagement part 5, 1b is opened and placed so that its inner circumferential surfaces 7a, 7b are in contact with the overhead wire 8. Next, both damper members 1a, 1b
is closed, the overhead wire 8 is compressed by the inner circumferential surfaces 7a, 7b of the elastic bodies 3a, 3b, the groove-shaped engaging portion 6 is engaged, and the vibration suppressing damper 1 is fixed to the overhead wire 8.

In addition, in the above embodiment, the weight members 2a, 2
b and the elastic bodies 3a, 3b are divided into two parts, but the invention is not limited to this, and they may be divided into three or more parts, and the engaging part may also be a pin engaging part or a groove-shaped engaging part. Not limited to, any engagement means may be used,
The elastic bodies 3a and 3b may also be part of the outer periphery of the weight members 2a and 2b, rather than the combined surface thereof.Furthermore, the shapes of the weight members and the elastic bodies are not limited to circular shapes, but may be of any ring shape. Furthermore, in the above embodiment, the entire surfaces of the weight members 2a and 2b are covered with the elastic bodies 3a and 3b, and the engaging portions 5 and 6 are covered with the elastic bodies 3a and 3b.
a, 3b, but as shown in FIGS. 3 and 4, both ends of the weight members 11 and 12 are connected to the elastic body 1.
3 and 14, and the engaging portions 1 are provided at both ends thereof.
5 and 16 may be provided.

[Effect of idea]

According to this invention, in the ring-shaped vibration suppression damper, the weight member is embedded evenly around the inside of the elastic body constituting the damper member, so that the elastic action of the elastic body between the weight member and the overhead wire causes the overhead line to It is possible to absorb and suppress vibration energy and prevent the generation of noise due to the vibration of overhead lines. In addition, the simple structure makes it easy to manufacture.
Since it is ring-shaped, it also has the effect of preventing snow buildup.

[Brief explanation of drawings]

Fig. 1 is a plan view of one embodiment of the vibration suppression damper of this invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is a plan view of another embodiment of the vibration suppression damper of this invention. , and FIG. 4 is a cross-sectional view taken along the - line in FIG. 3. 1... Vibration suppression damper, 1a, 1b... Damper member, 2a, 2b, 11, 12... Weight member, 3a, 3b, 13, 14... Elastic body, 5, 1
5... Engaging part (pin engaging part), 6... Engaging part (grooved engaging part), 7a, 7b... Inner peripheral surface, 8... Overhead wire, 16... Engaging part.

Claims (1)

[Scope of utility model registration request] A ring-shaped vibration suppressing damper that is attached to an overhead wire by sandwiching an overhead wire between damper members made of an elastic body divided into at least two parts, characterized in that a weight member is embedded evenly around the circumference inside the elastic body. Vibration suppression damper.