JPS638029Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for preventing swinging of a conductive pipe busbar used in a substation or the like due to wind pressure or the like.

Conventionally, in order to isolate pipe busbars from vibration, it has been done to insert electric wires into the pipes, or to run resonant rods along the pipes according to the natural frequency of the pipes.
However, sufficient effects cannot be obtained by either method.

This invention was devised to eliminate the inconveniences in conventional pipe busbar vibration isolators, and allows the receiving pipe and the friction rod, which are each inserted in the pipe in a cantilevered manner, to slide freely against each other within the pipe. It is characterized by resistance to vibration due to the sliding friction resistance between the fitting, the receiving pipe, and the friction rod due to deflection when the pipe vibrates.

An example will be described below with reference to the drawings. The pipe bus line P is supported at both ends between horizontal beams of a support frame in a substation or the like.

One end of the receiving pipe 1, which is inserted through almost its entire length into the pipe bus P, is fixed to the support 2 via a connecting rod 2a. The support 2 is screwed into the one end of the pipe bus P, so that the receiving pipe 1 is cantilevered at one end within the pipe bus P.

The friction rod 3 is inside the pipe bus line P, and the receiving pipe 1
It is inserted loosely along almost its entire length.
One end of the friction rod 3 is fixed to a support 4, and
is screwed into the other end of the pipe bus bar. Therefore, the friction rod 3 is also cantilevered at the other end within the pipe generatrix P.

The receiver tube 1 and the friction rod 3, which are each supported in a cantilever manner within the opposing ends of the pipe generatrix P, are bent slightly downward at the tip end side, so that they are fitted in contact with each other.

When the middle part of the pipe generatrix P is deflected due to wind pressure, etc., the friction rod 3 and the receiving tube 1 move in and out relative to each other while sliding against each other, and the frictional resistance at that time resists the deflection force of the pipe generatrix P, suppressing the vibration. It is something to stop.

In summary, the present invention consists of receiving pipes 1 that are cantilever-supported within both ends of the pipe bus bar P and fitted into each other.
Since the vibration of the pipe bus bar is prevented by the sliding frictional resistance between the friction rod 3 and the friction rod 3, a high vibration damping effect can be obtained, and the structure is simple, easy to incorporate, and can be obtained at a relatively low cost. .

[Brief explanation of drawings]

The drawing is a front view showing an embodiment of the present invention. 1... Receiving pipe, 2... Support body, 2a... Connection rod,
3...Friction rod, 4...Support, P...Pipe busbar.

Claims (1)

[Scope of utility model registration request] A receiving pipe that is supported in a cantilever manner at one end within the pipe bus bar and extends within the pipe, and a friction rod that is supported in a cantilever manner at the other end within the pipe bus bar, extends within the pipe, and is loosely inserted into the receiving pipe. A vibration prevention device for pipe busbars that limits the deflection of pipe busbars due to vibration by sliding friction rods and receiving pipes.