SU1584014A1 - Trolley for moving along wires of split phase of aerial power transmission line - Google Patents

Abstract

The invention relates to the field of electric power industry and can be used in the repair of overhead power lines. The purpose of the invention is to simplify the design, increase safety and productivity when performing repair work on the wires of power lines. The cart has a frame 2 with vertical posts 3, 4 on which rollers 7 are fixed on axles through consoles 5, 6. Consoles 5, 6 are connected by a removable cross bar 9. For crossing over obstacles on wires of 1 line, for example, a supporting clip The crosspiece 9 is dismantled and the cart with the ropes 15, 16 moves freely along the wires 1, allowing the insulating suspension to pass between the brackets 5, 6. 2 Cp. f-ly, 3 ill.

Description

1

7. Consoles 5, 6 are connected by a detachable crossbeam 9. To pass through obstacles on wires of the first line, for example, the supporting clamp of the cross member 9 is dismantled and

the cart with the ropes 15, 16 freely moves along the wires 1, allowing the insulating suspension to pass between the brackets 5, 6. 2 Cp. f-ly, 3 ill.

The invention relates to electric power industry, and more specifically to trolleys for moving over the wires of the split phases of overhead power lines.

The purpose of the invention is to simplify the design, increase safety and productivity when performing repair work on the wires of power lines.

FIG. 1, a trolley for moving along the wires of the split phase of an overhead transmission line, front view (along the wires of the split phase); FIG. 2 is the same side view (perpendicular to the wires of the split phase); FIG. 3 - the same, at the moment of the beginning of transition through the supporting clip.

A trolley for moving along wires 1 of a split phase overhead transmission line contains a welded tubular frame (frame) 2, with racks 3 and 4 attached to it, the second rack 4 can be pulled out of frame 2 and rotated around its axis to racks 3 and 4 with consoles 5 and 6, the axes of the rollers 7 are attached to move along the upper wires of the 1 phase. In the extended position, the support 4 is held by the clamp 8. To create rigidity of the structure and prevent the trolley from falling when the rollers 7 slide off the wire, the tubular axes of the arms 5 and 6 are fastened with a removable cross-member 9 (it is prevented from falling out of the clamp). At the time of transition through the supporting clamp 11, the yoke 9 is dismantled, and to prevent the cart from falling when the rollers 7 slide off the wire, it is attached to the supporting clamp 11 by safety ropes 12 and 13. The cart is lifted to the wires by the loop 14 on the rack 3. To move the cart ropes 15 and 16 serve along the wires. When working under tension, these ropes must be insulating, withstanding the operating voltage of the transmission line. The majority of obstacles on the wire in the form of protruding parts are overcome by rolling rollers through them without stopping the trolley, for this

The radius of the support surfaces of the rollers 7 is greater than the height of such obstacles. Such a roll over the wire nipples at the installation site of the supporting clip 11 would result in an excessive increase in the diameter of the rollers 7, and also during the rolling, shock loads would be applied to the carriage.

The optimal dimensions of the rollers 7, the unevenness of the supporting clips are smoothed by overlaying them and the wire 1 on both sides of the clamp 11 of the inclined plates 17.

5The sequence of operations when mounting the trolley on the wires 1 is as follows: the trolley with the crosshead 9 to be disassembled and with the pivot stand 4 lowered (position I, fig 1) is located on the ground under

0 by wires 1 of the power line, devices for lifting the cart to the wires (not shown) are attached to the loop 14, an electrician is placed in the cart. The cart goes up to the wires. The console 5 of the fixed rack 3 is driven by one upper wire, the rack 4 is extended to its full height, the trolley is aligned with ropes 15 and 16 so that rollers 7 are higher than the wires (position I, fig. 1), the rack 4 is turned around with the lock 8, the stop 4 is fixed. The console 6 is mounted on the wire (position III, Fig. 1), the cross bar 9 is inserted into the hollow axis of the console 6 and secured with the lock 10. After

5 of this, the lift system is disconnected from the loop 14. The movement of the trolley along the wires is provided by electricians from the ground by means of ropes 15 and 16,

To go through supporting

0 clamp 11, the trolley is fed by the consoles 5 and 6 close to it, the safety cables 12 and 13 are fastened behind the supporting clamp, the pad is attached to the boat of the supporting clamp 11 and the wire on both sides

5 17, the yoke 9 is removed, the tension of the ropes 15 and 16 moves the cart through the supporting clamp 5, while the rollers 7 roll over the plates 17, and the fastener 18 of the supporting clamp 11 extends between the ends of the arms 5 and 6.

The yoke 9 is installed, the safety ropes 12 and 13 are disconnected from the supporting clip 11. The device is ready to move along the wires in the transmission line span.

Using the proposed carriage design, by eliminating the alternate removal of the rollers from the wire, the structure itself is simplified, which means that its weight and cost are reduced, and the process of passing through obstacles on the wire, including through the supporting clamp, is reduced, it increases productivity during installation and dismantling of the cart, as well as when crossing over the obstacle on the wires of the power line, the safety of the passage through the supporting clamp is improved by eliminating the operation of dismantling the rollers with waters,

Claims (3)

1. Trolley for moving along the wires of a split phase overhead line transmission, containing a frame designed for installation on wires, rollers mounted on it on axles, and a cradle for an electrician in it, characterized in that, in order to simplify the design, improve safety and labor productivity when performing repair work on the wires the power lines, the axes of the rollers, pre-assigned to move along the upper wires of the split phase, are fixed by means of consoles to the vertical side posts of the frame, rigidly interconnected in their lower part. five 2. A trolley according to claim 1, characterized in that it is provided with a removable cross member fixed between the vertical uprights of the frame and the safety cables, the ends of which are attached to the trolley. 0 3. A trolley according to claim 1, characterized in that one of the vertical posts of the frame is pivoted and adjustable in height. Phage 2 O / Tin editor (rig J Compiled by K. Grigoriev Tehred M. Morgentalkorrektor S.Shekmar