RU113208U1 - BOLTLESS FIXING PRESSED CLAMP FOR CONTACT WIRES - Google Patents

Abstract

1. Boltless fixing clamp, characterized in that it contains two dies connected by rivets, and a pin located between them, while the dies are provided with a thread made on the surfaces installed in the grooves of the contact wire. ! 2. The clamp according to claim 1, characterized in that the rivets are made of bronze or cold-worked copper, while at the end of the cylindrical part a cone-shaped depression is made with a diameter of 4 mm to 8 mm and a depth of 5 mm to 10 mm, and the diameter of the rivets is from 10mm to 14mm, and rivet lengths from 20mm to 25mm. ! 3. A clamp according to claim 1 or 2, characterized in that the thread has a pitch of 1 mm to 1.5 mm and a height of the thread crest from 0.5 mm to 1 mm.

Description

The utility model relates to electrified railway transport and can be used in the installation of the contact network for suspension and fixing the contact wire at the supports of the contact network.

Known fixing clamp containing two dies, bolted to nuts, with which the dies are fixed by clamps on the contact wire (Catalog of fittings for the contact network of electrified railways, Moscow, 2000, p. 39).

A disadvantage of the known clamp is the presence of bolts with nuts, with which the dies are mounted on the contact wire. In operating conditions, the tightening of the bolts weakens, which may lead in some cases to failure of the fixing clip and damage to both the contact network and current collectors of the electric rolling stock, in addition, these bolts corrode and fail over time under operating conditions. In addition, a drawback of the design of the bolt fixing clamp is that during its installation the required force is required to tighten the bolts in order to exclude its possible slipping on the contact wire or during the drawing of the latter, as well as during temperature changes from the traction load or changes in the ambient temperature.

To fulfill the requirement for normative tightening of the fixing clamp bolts, it is necessary to use a calibration key, which increases the clamp mounting time. In some cases, the workers of both installation and maintenance departments do not always use this installation process, as a result of this, in some cases, the clamp bolts are under-tightened, slipped, and sometimes the clamp is broken from the contact wire with all the ensuing consequences, including a break the movement of electric trains.

The objective of the utility model is to expand the arsenal of technical means - fixing clamps.

The technical result of the proposal is to improve the quality of the connection of the clamp with the contact wire, in particular, the bending force increases by 2.2 times, and the breakdown force - by 2 times, thereby increasing the reliability of the fixing boltless clamp, eliminating the possibility of slipping on the contact wire . Clamp mounting time is reduced by 12% -15% compared with a bolt clamp. In general, the operational reliability of the clamp increases.

The technical result is achieved by the fact that the bolt-free fixing clip contains two dies connected by rivets and a pin located between them, while the dies are equipped with a thread made on surfaces installed in the grooves of the contact wire.

The rivets can be made of bronze or caged copper, while at the end of the cylindrical part, a recess is made in the shape of a cone with a diameter of 4 mm to 8 mm and a depth of 5 mm to 10 mm, the diameter of the rivets being from 10 mm to 14 mm, and the length rivets - from 20 mm to 25 mm.

The thread can have a pitch of 1 mm to 1.5 mm and a thread crest height of 0.5 mm to 1 mm.

It is experimentally proved that the technical result is achieved in the ranges of the above values.

Figure 1 presents a General view of the clamp.

Figure 2 shows a side view of the clamp.

Figure 3 - shows a view of the clamp in section along the rivet.

Figure 4 - notch on the die clamp.

The bolt-free fixing clip contains two dies 1 connected by rivets 2. A pin 3 is placed between the dies 1, equipped with a thread 4, made on the surfaces installed in the grooves 5 of the contact wire 6.

Rivets 2 can be made of bronze or caked copper. At the end of the cylindrical part, a recess 7 of the conical shape is made with a diameter of 4 mm to 8 mm and a depth of 5 mm to 10 mm. The diameter of the rivets 2 is from 10 mm to 14 mm, and the length of the rivets is from 20 mm to 25 mm. Thread 4 can have a pitch of 1 mm to 1.5 mm and a thread crest height of 0.5 mm to 1 mm.

The lower part of the clamp dies 1, located in the zone of the grooves 5 of the contact wire, has a thread 4 made in the entire length of the dies 1. The thread allows you to increase the slip force of the fixing clip on the contact wire 6 by 20-25%. The clamp is fixed using two rivets 2. For crimping rivets in a bolt-free fixing clamp, dies and punches have been developed. They allow them to be crimped depending on the diameter of the rivets with a force of 6 to 24 i.e. The installation time of the proposed clamp is from 18 seconds to 26 seconds.

Claims (3)

1. A bolt-free fixing clip, characterized in that it contains two dies connected by rivets, and a pin located between them, while the dies are equipped with a thread made on surfaces installed in the grooves of the contact wire. 2. The clamp according to claim 1, characterized in that the rivets are made of bronze or caged copper, while at the end of the cylindrical part, a recess is made in a conical shape with a diameter of 4 mm to 8 mm and a depth of 5 mm to 10 mm, the diameter of the rivets being from 10 mm to 14 mm, and the length of the rivets is from 20 mm to 25 mm. 3. The clamp according to claim 1 or 2, characterized in that the thread has a pitch of 1 mm to 1.5 mm and a thread crest height of 0.5 mm to 1 mm.