SU755635A1 - Weight-type compensator for wire tension - Google Patents

Description

The invention relates to electrified rail transport and can be used for those wires of contact hangers, which are anchored by means of cargo compensators.

Designs of cargo compensators are known, which provide constant tension of the contact network wires anchored with their help over the whole range of heating temperatures.

Supporting structures for compensator weights are also known, which keep them from falling to the ground when the wires of the contact network are broken, containing a stackable load suspended on cables and insulators connected to a support and wires, and a bar with load-holding projections is installed along the supports [1] .

However, these compensators are unreliable in operation.

The closest in technical essence to the invention is a cargo strain relief of wires, which contains wedge clamps for gripping the wire, a system of blocks connected via insulators with compensatory cables with a support and wires 2

mi contact suspension, typesetting weight, placed on the anchor rod associated with a cable pull [2].

However, this compensator is not effective enough, especially with sudden changes in ambient temperature.

The purpose of the invention is to increase the efficiency by changing the tension of the wires of the contact suspension.

To do this, in the compensator the type-setting load consists of upper and lower parts, between which there is a dividing strip with protrusions, and on the support there is a locking plug, the distance between the branches of which is greater than the diameter of the load, but less than the distance between the tabs of the dividing strip, and the weight of the lower part of the load the magnitude of the critical tension of the wires of the contact suspension.

FIG. 1 shows the structural layout of the cargo compensator; in fig. 2 - section A — A in FIG. one.

Cargo compensator contains bracket 1, wedge clamps 2, in which cables 3 compensators are fixed, system of 4 blocks of compensator, elongated in comparison with other cargo compensators,

3

755635

four

rod 5, composing loads 6, which are separated by a partition with retaining lugs 7, a locking plug 8 with braces 9 and a bracket 10, with a collar 11 and a cable 12 fixed on the support and limiting the oscillations of the load. ί

The device works as follows.

To ensure safe operation conditions in contact superheat pendants over the maximum permissible temperature sufficient to remove a part rastyagi- ¹⁰ vayuschey load wires. Thus, reducing the tension of unworn contact wires of the type MF-100 to 150 kg allows them to operate when heated to 200 ° C, while at a tension of 1000 kg the maximum allowable temperature does not exceed 120 ° C. Thus, the decrease in tension allows you to push the lower temperature limit of the creep mode of the wires. At temperatures less than 120 ° conductors C must be under full tension of ^20. For this, the load 6 of compensated anchoring of the contact wire in the case of a semi-compensated chain suspension or contact wire and carrying cable in the case of a compensated chain suspension ₂ $ is divided into two parts by a partition with retaining lugs 7, and a support fork 8 with braces 9 is mounted on the support at that height, so that when the wires are heated up to the maximum permissible temperature and when they receive the appropriate extension 40, the partition with the retaining lugs rests on the support plug. The rod 5, on which the cargo is placed, is extended so that with further increase in temperature and extension _{of the} wires, part of the load lying on the plate, moving relative to the rod, does not reach its attachment point with a compensator cable.

In this case, part of the loads under the plate are involved in the tension of the wires, as a result of which automatic

chesky, step, tension-dependent tension control.

The use of automatic, depending on the temperature, the tension of the wires of the contact suspension allows you to increase the maximum allowable temperature of the wires and to refuse to strengthen the cross section of the contact network or its conversion to receiving-sending and other secondary paths, which saves copper wire and other materials. It is also possible to increase the capacity of those areas where the heating of the contact suspension wires is limiting.

Claims (1)

Claim Cargo strain relief wire containing wedge clamps for gripping the wire, a system of blocks connected through insulators compensatory cables with support and wires of the contact suspension, typesetting weight placed on the anchor rod associated with a cable stretch, characterized in that, with the aim of improving efficiency by changing the tension force of the catenary wires in the compensator, the composing load consists of the upper and lower parts, between which there is a dividing strip with protrusions, and on the support is installed detecting the locking fork, the distance between the branches is larger than the diameter of the load, but less than the distance between the projections of the separation strips, the bottom of the cargo weight is proportional to the magnitude of the critical tension catenary wires.