RU189171U1 - Link String Contact Suspension - Google Patents

Abstract

The invention relates to the field of electrification of railway transport and can be used in chain contact hangers of the contact network of electric railways. Each link of the link string (Figures 1 and 2) is made of round wire 1 and 2, at the ends of which one loop 3 or two is made loops 4 and 5. The string section adjacent to the loop is made in the form of coils 6 around the string body from its end portion or, as an option, straight 7 coupled to the string body. The loop and the adjacent area are covered with solid cast insulation 8, 9, for example, of polyamide-6. The string of string is mounted in such a way that preferably the insulated loops are installed in the clamps for the string on the contact wire and the supporting cable. In the process of assembling a link string, a link of a string with a non-insulated end is connected to an adjacent link having an insulated loop in the usual way, with the formation of a loop and turns on the non-insulated end of the string.

Description

The invention relates to the field of electrification of railway transport and can be used in chain contact hangers of the contact network of electric railways.

Known link string contact suspension, in one or more loop of the link to prevent the flow of current invest polymer insulating koush (SU 1799754 A1, dated 01.22.91, published 07.03.93). The disadvantage of the design of stringed strings with polymeric insulating sleeves is the complex installation of the strings and the large overall dimensions of the polymer tip.

Known link string contact suspension (RU 2139800 C1 from 10/30/1997, published 10/20/1997) containing a wire at the ends of which are made of a loop, covered with solid insulation.

Solid insulation, made in the form of a tube of flexible material (fluoroplastic) with an inner diameter equal to the diameter of the wire, does not have sufficient resistance to loads when exposed to a contact suspension with a current collector of rolling stock. The area of the hinge that is not protected by the insulation from electrical erosion of the metal wears out intensively. The laborious operation of connecting the string to the string clamping device.

The objective of the proposed utility model is to reduce the wear of solid insulation covering the loop loop of the string, reducing the complexity and increasing productivity during installation work. In addition, it is necessary to reduce the flow of current along the link string from the contact wire to the carrying cable.

The problem is solved due to the fact that the entire surface of the loop and the adjacent section of the link string of the contact suspension are covered with solid insulation. Solid insulation is made of molded polyamide-6.

Adjacent to the loop section of the string is made in the form of coils around the body of the string from its final section or straight, associated with the body of the string.

The use of this technical solution allows to reduce the wear of solid insulation, which is confirmed by the protocol of life tests simulating the passage of a current collector under a string for 100,000 cycles. At the point where the string touched the clip, the oval groove was 1.2 mm, and at the point where the string touched the string, the oval groove was 0.4 mm. In addition, the use of strings in factory readiness increases productivity during installation work.

The essence of the utility model is illustrated by drawings, where in FIG. 1 shows a link of a contact suspension string, with a slit along an insulated loop. The sections of the string adjacent to the loop are made in the form of coils around the body of the string from its final segment. FIG. 2 shows a link of a contact suspension string, with a slit along an insulated loop. The portion of the string adjacent to the loop is made rectilinear and conjugated with the string body.

Each link of the link string (Fig. 1 and 2) is made of round wire 1 and 2 at the ends of which one loop 3 or two loops 4 and 5 are made. The string section adjacent to the loop is made in the form of coils 6 around the string body from its end portion or alternatively, rectilinear 7 coupled with the body of the string. The loop and the adjacent area are covered with solid cast insulation 8, 9, such as polyamide-6.

The link string is mounted in such a way that preferably insulated loops are installed in the clamps for the string on the contact wire and the supporting cable. In the process of assembling a link string, a link of a string with an uninsulated end is connected to an adjacent link having an isolated loop in the usual way, forming a loop and turns.

Claims (4)

1. A chord string of a contact hanger, containing a wire with loops at the ends, covered with solid insulation, characterized in that the entire surface of the loop and the adjacent section of the string are covered with solid insulation. 2. The chord string contact suspension under item 1, characterized in that the solid insulation is made of molded polyamide-6. 3. The link string of the contact pendant according to claim 1, characterized in that the portion of the string adjacent to the loop contains the turns around the string body from its final portion. 4. The chord string of the contact hanger according to claim 1, characterized in that the end portion of the string adjacent to the loop is made straight-line, conjugated with the string body.

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