Automatic tension compensator for overhead contact systems for electrified railways using disc springs

Abstract

The invention relates to an automatic tension compensator for overhead contact systems for electrified railways using disc springs. The automatic tension compensator comprises a barrel, a plurality of disc springs arranged in the barrel, a load rod, a gland, a force transformation mechanism arranged on the lower part of the barrel and connected with the load rod, a connecting nut, a lug 1 and a lug 2. At least three guide rods which are on the same circumference and are parallel to the axis of the barrel are arranged in the barrel near the wall of the barrel. Holes corresponding to the guide rods are arranged on the gland which can move axially relative to the guide rods. The diameter of the incircle of the profile formed by the cross sections of the three guide rods is slightly more than the diameters of the disc springs. The tension compensator combining the disc springs and the force transformation mechanism has the characteristics of large compensation quantity and constant and sufficient tension. Compared with the gravity compensation devices in the prior art, the tension compensator employs the force transformation mechanism to directly transfer the elastic force of the disc springs, without employing the transmission components, and has high efficiency and reliability.

Description

technical field [0001] The invention relates to an automatic tension elastic compensator for an electrified railway catenary, in particular to an automatic tension elastic compensator for an electrified railway catenary (carrying cable) with a disc spring with a large compensation amount. Background technique [0002] In 1961, my country built the first electrified railway, the Baoji-Fengzhou section of the Baocheng Railway. After the advent of electrified railways, it has developed rapidly. France, Japan, Germany and other countries have become the railway transportation industry dominated by electrified railways, and most of the freight volume is completed by electric railways. Its electricity is provided by the railway power supply system. The system consists of traction substation and catenary. The high-voltage electricity from the high-voltage transmission line is stepped down and rectified by the traction substation, and then sent to the overhead railway catenary. Th...

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Problems solved by technology

[0005] 1. The gravity of the cement block is small, and the length of the wire that can be balanced is limited. On average, a device needs to be loaded for every three columns;

[0006] 2. A conversion mechanism is required, and there are certain requirements for installation space and location, so it is difficult to solve the need for catenary tension in railway tunnels;

[0007] 3. The pulley mechanism needs manual refueling, and the cement blocks need to be adjusted according to seasonal changes;

[0008] 4. The cement blocks may shake to a certain extent under the influence of strong winds, and the force on the tensioning device is unbalanced

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