JPS5845144Y2 - Urban transportation power collection line - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the improvement of current collection lines for urban transportation.

The overhead contact line used in the suspended type mole rail, etc. is a JISEI 103 (JIS light rail) solid iron 9Kv/m, 6Kirrl rail, etc. shown in FIG.

This kind of current collector line generates a sliding noise when the pantograph shoe slides on the surface of the current collector line, and this power level is 9.
It has the disadvantage that it can reach up to 0 dB/m, making it a target for noise pollution.

Therefore, in order to reduce the sliding noise, the inside of the current collector wire is made hollow and a vibration-absorbing material such as powder, granules, asphalt, rubber, plastic, etc., or concrete is enclosed in the hollow part. A current collector wire as shown in Figure 2 (01 is a conductor, 02 is a vibration absorbing material).

). However, in a current collecting wire in which the hollow portion of the conductor 04 is filled with the vibration absorbing material 02, a gap is created due to vibration caused by sliding between the current collecting wire and the pantograph shoe, vibration transmitted to the current collecting wire from the outside, etc., and the vibration is absorbed. Experiments have proven that the filling degree of the material decreases and the damping effect of the vibration absorbing material 02 is not fully utilized.

When filling the vibration absorbing material 02, it is very difficult to completely fill the cavity.

The purpose of this invention is not only to effectively damp the vibration of hollow overhead contact lines, but also to prevent the damping effect from decreasing. It is a conductive material that has a cross-sectional area and is hollow, into which a pipe 2 made of iron, aluminum or copper with a hollow cross-section is inserted, and a powder 3 such as sand is press-fitted into the entire cavity. and is enclosed.

As shown in FIG. 4, by expanding the pipe 2 in the cross-sectional direction using a hydraulic bulging method or the like, internal stress is generated between the particles of the granular material 3, and the granular material 3 is enclosed in the hollow part of the conductor ( It is possible to further reduce the gaps between the particles of the powder or granule material 3, which cannot be crushed only by press-fitting, and increase the degree of filling of the powder or granule material 3.

(Conversely speaking, the porosity can be reduced.) As mentioned above, the present invention makes the inside of the conductor hollow, inserts a pipe that is bulged after insertion into the hollow part, and encapsulates a vibration-absorbing material for urban transportation. Since this is an engine's current collector line, vibrations due to sliding with the pantograph shoe and vibrations transmitted to the current collector line from the outside (for example, vibrations caused by vehicle running) can create gaps in the vibration absorbing material sealed in the current collector line cavity. This has the effect of permanently maintaining the vibration damping effect without causing any damage.

This invention is widely used in orbital buses, suspended mole rails, subways, etc.
It is possible to implement J).

[Brief explanation of the drawing]

Figure 1 is a sectional view of a contact wire, Figure 2 is a sectional view of a conventional hollow conductive wire, and Figures 3 and 4 are examples of the present invention. The figure is a cross-sectional view after bulge processing. 1... Conductive material, 2... Pipe, 3... Powder.

Claims (1)

[Scope of utility model registration request] A power collection line for urban transportation, characterized in that the inside of the conductor is hollow, a pipe that is bulged after being inserted is inserted into the hollow part, and a vibration absorbing material is enclosed.