RU1783327C - Device for testing current collectors - Google Patents

Abstract

Usage: electrical equipment, transport vehicle, electrotoy. SUMMARY OF THE INVENTION: the device includes a section of a contact network with a measuring system located thereon, divided into several groups, each of which contains a number of spring-loaded slots connected electrically to each other and to a test current source. When driving under groups of devices of electric rolling stock through the current collectors and roof equipment of the latter, a closed test circuit is formed. 1 C.p. f-ls, 3 ill.

Description

FIELD: transport equipment, in particular, current collectors of main electric transport.

Electric rolling stock collectors (EPS) are designed to transfer traction current from track devices (contact network) to EPS, to power traction motors and auxiliary equipment.

Operation in extreme EPS modes - driving trains of critical mass, frequent acceleration, movement on long hikes, icy phenomena and the presence of weakened current collector assemblies that appear during operation (poor attachment of contact pads (inserts) to runners, cuts and punctures of pads, weakening of fasteners and breaks of individual branches of the shunt jumpers between the elements of the current collector structure)

can cause foci of burns, electric arc erosion (bearing assemblies and cotter pins), thermal softening and weakening of the mechanical properties of metal structures and frames. Therefore, practical experience and theoretical studies require taking into account the thermal and arc effects of the passage of the traction current on the conductive elements of the current collector during operation.

A known method of supplying traction current to a current collector during the movement of EPS. In this case, a current of 2200 A can be passed. The disadvantage of this method is the impossibility of passing such a large current on the stand due to the rapid heating of the contact wires, as well as possible damage to the design of the current collector skid.

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Diagnostic systems for EPS current collectors are known under linear conditions (UKT-78 in the Moscow railway depot of the West Siberian Railway). They include a measuring system consisting of sensors mounted by means of insulators on the contact network, including a spring-loaded contact runner parallel to the contact wire and located below the latter. The skid is in contact with the skid of the current collector. The disadvantage of these diagnostic systems is that only the mechanical characteristics of the current collectors are monitored.

The purpose of the invention is to increase the reliability of measurements by ensuring uniform distribution of contact areas over the surface of the current collector skid to diagnose its load capacity.

This goal is achieved by the fact that several special measuring systems are installed on the contact network, each of which has a main and additional contact spring-loaded skids connected electrically to each other and to a test current source.

The proposed device prevents thermal damage to the pads and burn-through of the skeleton of the current collector under test with high load currents exceeding the operating current.

The device operates as follows.

Upon entry of the ESR current collectors under the skid system design, adjacent to the current collector run, multiple contact pairs are created to spread the test current throughout the runner structure and further along the connecting shunts and current collector frames.

Figure 1 shows a diagram of a system device; figure 2 - test circuit; Fig. 3 is an arrangement of measuring systems.

The device (see Fig. 1) includes a measuring system consisting of a frame 1, to which a series of copper skids 3 are suspended through spring elements 2. The skids are bent at the ends for smooth entry of the runner of the tested current collector. The design of the system is mounted on the contact suspension through insulated inserts 4 on the working contact wire. The slides are interconnected by current-carrying connections (electric shunts) 5 in a single electrical structure. A loop 6 connects the measuring system to a test current source 9. The system is suspended from the supporting cable of the contact network by brackets 7 with insulators 8,

The test circuit (see Fig. 2) consists of a current source 9, a measuring system 10, as well as EPS equipment, including current collectors 11 and roof equipment 12.

The arrangement of the measuring systems (see FIG. 3) includes a current source 9, measuring systems 10, a switch 13, and disconnectors 14.

In order to ensure the diagnosis of several (simultaneously two) current collectors, additional measuring systems are located on the contact network at a certain distance so that they are in contact with the runners of the two current collectors of the EPS unit (electric locomotive, electric train). During testing, the current collectors must be permanently connected electrically through the roof equipment. At the entrance of the EMC, the test current circuit is closed with current collector slots (see FIG. 2): current source 8, measuring system 9, current collector EPS 10, roof equipment 11, current collector 10, measuring system 9, Test current, consecutively designed both current collectors, heats them.

For each type of EPS there is its own arrangement of measuring systems (si.Fig.Z). In this beam, upon arrival of the EPS in the working circuit, the first system closes in the direction of travel and one of the subsequent systems.

In order to ensure self-propulsion of the EPS under the measuring systems, the extreme (first along the direction of travel) system is connected electrically to the contact network.

Claims (2)

The claims 1, A device for testing current collectors, comprising a measuring system fixed through insulators on the contact network and including a spring-loaded contact slide located parallel to the contact wire and below the latter, characterized in that, in order to increase the reliability of measurements by ensuring uniform distribution of the contact sections over the surface current collector runner, it is equipped with a test current source and additional spring-loaded runners connected electrically to each other and with a test current source. 2. The device according to claim 1, characterized in that in order to ensure the diagnosis of several current collectors, it is equipped with additional measuring systems 517833276 spacers located at a distance, equal to one of the measuring systems, with the distance between the current collectors, being aware of the contact network electrically. (ris. / ri & & YU about at