JPS641148Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tension balancer that adjusts the tension of overhead wires such as power supply contact wires on electric railway lines by absorbing expansion and contraction due to temperature changes.

Conventional tension balancers include, for example, spring-type ones that absorb the expansion and contraction of overhead wires by compressing and restoring the springs. ,
It is used only within a certain range of tension change rate.
Therefore, it cannot be used for overhead wires where the tension changes significantly. In addition, since the spring is built-in, it is heavy and there is a problem in that it is dangerous to compress the coil during assembly.

The present invention was developed by focusing on the above-mentioned problems of conventional tension balancers, and aims to solve the above-mentioned problems by constructing a tension balancer using the repulsive force of a magnet. There is.

Embodiments of the present invention will be described below with reference to the figures. This tension balancer is constructed by connecting a large number of units 1.

Each unit 1 consists of a case 2 and a removable body 3. A handle 4a is attached to the lid 4 at one end of the cylindrical case 2.
The other end is provided with an annular lid 5, and an annular magnet 6 is fixed to the inside of this annular lid 5.

The small-diameter cylindrical entrance/exit body 3 has an annular lid 5 at one end.
It penetrates through the case 2 and is received in and out of the case 2. An annular lid 7 is provided at the inner end of the case 2 of the access body 3.
and a lid 8 with a handle 8a at the other end. An annular magnet 9 is fixed to the inner periphery of the annular lid 7, and its magnetic poles are set to have the same polarity as the opposing magnet 6 in the case 2 and to repel each other.

Each unit 1 constructed as described above can be connected in large numbers by connecting the pulls 4a, 8a with bolts and nuts 10.

This tension balancer has unit 1 at one end.
The handles 4a and 8a of the unit 1 are connected to the overhead wire, and the handles 8a and 4a of the unit 1 at the other end are connected to a structure such as an iron pole. Generally, overhead contact lines are constructed with a tension of 1000 kgf to 800 kgf. This expands and contracts repeatedly due to temperature changes, but the amount of expansion and contraction is
It is approximately 680mm with a temperature change of 50℃ for 800m.
Therefore, assuming that the stroke generated by each unit 1 is 100 mm, the balancer of the present invention by connecting the units 1 is about 1/2 the length and about 1/3 the weight of the conventional spring type balancer. It is possible to deal with this.

As explained above, the present invention constitutes a tension balancer by connecting a plurality of units 1 each consisting of a case 2 that can be moved in and out and a body 3 that can be moved in and out, each of which is equipped with a magnet that repels each other. Because of this, there are no built-in components such as springs, so the entire device is compact and lightweight, and is resistant to mechanical damage and durable. Furthermore, the rate of change in tension can be reduced by magnetic force, and it can also be used in locations where the extension/contraction stroke of overhead wires is relatively large. The required stroke can be easily adjusted by increasing or decreasing the number of units 1 to be connected.

[Brief explanation of the drawing]

FIG. 1 is a front view of the entire unit, and FIG. 2 is a plan view of the unit. 1... Unit, 2... Case, 3... Accessible body, 4... Lid, 4a... Pull, 5... Annular lid, 6... Magnet, 7... Flange-shaped lid, 8... Lid,
8a...Holder, 9...Magnet, 10...Bolt/Natsuto.

Claims (1)

[Scope of utility model registration request] A case that has a handle at one end and a magnet attached to the inside of the lid at the other end, and one end to which a magnet that repels the magnet of this case is fixed, penetrates the lid at the other end of the case and can be moved in and out of the case. A magnetic tension balancer characterized in that a plurality of units are connected to each other by connecting the handles to each other.