SU1457037A2 - Device for moving along the wires a carriage for maintenance of overhead power lines - Google Patents

Abstract

) .. The invention relates to electric power industry and can be used when servicing overhead lines Type of transmission. The goal is to further reduce the laboriousness of servicing the cart and improving its performance by providing automatic control of tractive effort and speed depending on the angle of wire lifting. Under the ropes of the device, there are rollers 12 on the axles 13 of the levers 14 mounted with hinges 17 on the upper shaft 16. Spring 19 of the hinge etc between the eccentric and the brackets 20. This allows you to automatically adjust the pulling force and speed of the trolley, reducing the labor intensity the process of its movement along the power line wires. 5 il. A sh (L

Description

F1 / G3

The invention relates to electric power industry, namely, devices for moving carriages for servicing overhead transmission lines by wire, can be used to control the speed of movement of the actuator (or feed amount) depending on the resistance to movement in various cutting machines, drilling rigs, bar feed mechanisms and is an improvement on the auth. No. 1309137.

The purpose of the invention is to further reduce the laboriousness of servicing the cart and improving its operational qualities by providing automatic control of the tractive effort and speed depending on the angle of the lifting wires.

Figure 1 shows the proposed device, a General view; figure 2 is the same, view CBeipxyj in fig.Z - view A in figure 2; Fig. 4 shows a sliding clamp of the device, a general view; Fig. 3 is a section through the brackets and the upper pinion shaft of the device.

The device for moving the trolley for servicing an overhead transmission line by wire consists of a frame 1 and 2 rollers 3 mounted on the wires. The latter are fixed on the frame 1 by a hinge. Sliding clips 4 are installed on wires 2, in the gap between the front and rear walls of the frame 1. In the case 5 of the clamp, the hinge 6 is reinforced with the x-ray trick 7 clamped to the wire 2 by the spring 8. The case 5 of the clamp 4 is connected by tension spring 9 the front wall of the frame 1 and the flexible connection (rope) 10 with the rear wall of the frame 1 of the trolley. Under the cables 10 there is a flexible coupling deflection mechanism 11 made in the form of rollers 12 mounted on axles 13 of two eccentric levers 14 mounted on flange 15 of upper shaft 6 with

In 19, the hub of the bracket 20 is located on the splines of the shaft 16 with the possibility of rotation around its axis and fixed from the end with a nut. The device is equipped with a chain-drive 21 with pedals 22, and the upper sprocket 23 of the chain-drive 21 is mounted on the upper half of the frame 1 under the flexible coupling 10 on the shaft 16. The cart is also equipped with a seat 24 and a latching brake (not shown).

The device works as follows.

In a downward branch, the trolley is moved by gravity. Before climbing up the upright branch, the clips 4 plant on the wires 2 through the opening in the housing 5 of the clamp 4. At the same time, the eccentric 7 is pressed by the monter. After mounting on the wire, the eccentric 7 under the action of the spring 8 presses the housing 5 of the clamp 4 to the wire 2. The installer has on the seat 24, rotates the pedals 22, the movement of which is transmitted by the chain transmission 21 to the upper sprocket 23 and shaft 16 with the flange 15, the levers 14 and the brackets 20. The rollers 12, acting on the flexible link 10 in its middle part, deflect it from neutral tension setting, creating a force in g bkoy communication 10

equal to

2 sinoi.

 where P is the force applied to the flexible coupling, and about the angle of deviation of the flexible coupling from the shortest distance between the clamp 4 and the rear wall of the frame 1.

This force moves the dolly to the clamp 4, stretching the spring 9. After the roller 12 descends from the flexible coupling 10, it is released and the resulting slack selects the supper 9 by moving the clamp forward. After which the trolley movement cycle is repeated.

From this formula, it is clear that

hinges 17. Each lever 14 extending the maximum is drawn in chalk at the two stops 18 of the flanks (the greatest reduction) is obtained at the lowest angles — the deviation of the flexible connection from the tensioned position 15, limiting its movement in the extreme positions, and is pressed from the shaft: a 16 (i.e. pressed against the wire 2) by the spring 19.

The spring 19 is stretched by one end of the reinforcement on the eccentric 14, and the other on the brackets 20. To adjust the stiffness of the pruni, which corresponds to the lowest 55 travel speeds. The tension springs 19, by rotating the arms 20, adjust to the stiffness corresponding to the greatest displacement. per cycle (hence.

nor, which corresponds to the lowest 55 travel speeds. The tension springs 19, by rotating the arms 20, adjust to the stiffness corresponding to the largest displacement in one cycle (hence.

highest movement speed) with optimal effort on the pedal,

In the process of moving the trolley in flight, the angle of inclination of the wires varies from 0 to 20 °. The required pulling force is also changed accordingly.

When the trolley moves on gentle slopes of the transmission line, the eccentric rollers 12 deflect the ropes 10 by the greatest amount equal to the eccentricity of the brackets 20. As the trolley approaches the support, the elevation angle of the wires 2 required to move the trolley. At the same time, the springs 19, when interacting with the rope 10, are stretched by a large amount (in proportion to the increased load), as a result of which the maximum deviation of the ropes 10 decreases, the minimum reduction of the cycle increases in accordance with the formula, the speed of the trolley decreases, and the pedal load x remains unchanged.

In this way, an automatic regulation of the magnitude of the tractive effort and the speed of movement of the cart, depending on the angle of the wires, occurs.

The design of the proposed trolley allows the installer to rotate the pedals with a constant circle force, not exceeding the standard value, when

varying external load, which reduces the installer's fatigue and thereby reduces the laboriousness of the process of moving along the wires. As an embodiment, the eccentric can deflect the rope 10 by means of a roller 12 fixed on a spring-loaded pusher, interacting with the eccentric and performing reciprocating movements in the body mounted on the frame of the cart.

Claims (1)

Invention Formula A trolley travel device for servicing an overhead transmission line by wire through. auth. No. 1309137.0, in order to further reduce the labor intensity of servicing the trolley and improve its operation by providing automatic control of the tractive effort and speed depending on the angle of the wires, the eccentric, deflecting flexible coupling, made in the form of levers hinged on the shaft of the upper sprocket, while the device is equipped with brackets fixed on the specified shaft and connected by stiffness adjustable release springs with levers, and the shaft is made with stops and, serving to limit the movement of the levers to the extreme positions. Editor A. Shandor Compiled by K. Grigoriev Tehred M.DidykKorrektor V.Girn to 16 2lt nineteen Faye. five