SU1584015A1 - Device for displacement of trolley for maintenance of aerial power transmission line - Google Patents

Abstract

The invention relates to power engineering and can be used in the maintenance of overhead power lines. The purpose of the invention is to reduce the labor intensity during the movement and reduce the time of work on the line. The device has a drive in the form of two sliding clamps 4 on the wires 2, a flexible connection 10, 15, stored in blocks 9, 14 and 16, forming a tackle. I act through the handle 13 on the flexible link 10, with the help of sliding clamps 4, the installer advances the trolley along the wires 2 of the transmission line. The speed of movement of the trolley and the convenience of its maintenance are achieved. 3 il.

Description

(L

WITH

FIG. g

10 13 1C

SP

00

Ј. ABOUT

Ate

The invention relates to electric power industry, and more specifically to devices for moving carriages for servicing overhead transmission lines by wire,

The circuit of the invention is a reduction in labor-intensiveness when moving and a reduction in the time of work on the line.

Fig. 1 shows a trolley transfer device for servicing an overhead transmission line through wires, a view across the wires of the line; in fig. 2 - the same, top view; Fig. 3 shows the mechanism for moving the device.

The device for moving a trolley for servicing an overhead transmission line by wire consists of a frame 1 of a trolley and 2 rollers 3 mounted on wires 2 hinged on frame 1. On wires 2 in the gap between the front and rear walls of frame 1 sliding clamps are installed 4. In case 5 clamp on hinge 6 eccentric 7 is fixed, pressed to wire 2 by spring 8. On housing 5 of clamp 4, block 9 is fixed around the flexible connection (cable) 10. Link 10 is fixed to frame bracket 11 and through block 9 connects clip 4 s block 12, fortified n the rear wall of the frame 1. The coupling 10 connected with the frame 1 and blocks 9 and 12 forms a pulley block (in this case, twice). A handle 13 is located at the free end of the link 10. The free end of the link 10 is supported by a block 14, also mounted on the frame 1. Both bodies 5 and sliding clamps 4 are connected between the flexible elastic link 15 through the blocks 16 fixed on the front wall of the frame 1 trolley. The cart is also equipped with a seat 17 and a brake-lock (not shown). The trolley moving device for servicing an overhead transmission line by wire operates as follows.

On the downward branch of the line, the carriage moves under the force of gravity. Before climbing up the ascending branch, the clips 4 are moved to the wires 2 through the opening in the housing 5 of the clamp 4, and the eccentric 7 is pressed by the fitter. After being mounted on the wire 2, the eccentric 7 under the action of the spring 8 presses the body 5 of the clamp 4 to the wire 2. The installer, located on the seat 17, alternately hands one of the handles 13 (for example, right) alternately. The distance between blocks 9 and 12 of the right tackle is reduced. The back wall of the frame 1 of the trolley is pulled to the right sliding clamp 14. At the same time, the effective tackle increases the applied pulling force by a factor equal to the multiplicity of this tackle (twice in this case) . The second sliding clip (left) moves forward along the trolley link.

15, which rolls over the rollers of the block 16. Then, the installer pulls out the other (left) handle 13, and the left side of the chain hoist is activated. The frame 1 of the trolley is again pulled forward, but already to the left sliding clip 4. At the same time, the connection 15 pushes the right sliding clip forward by the amount of movement of the cart, again rolling over the rollers of the block 16, but in the opposite direction.

5 Thus, the trolley moves along gentle slopes of the span between the supports of the power line,

When moving on steeply inclined spans, large thrust forces are required. In this case, the fitter pulls both handles 13, while both of the chain pulleys operate at the same time, increasing the pulling force almost twice. The clips 4 are returned to their original position (relative to the cart) due to the spring properties of the flexible link 15, which is stretched as the cart moves forward. Handles 13 can be pulled out with their feet.

Thus, the regulation of the magnitude of the tractive effort and the speed of movement of the trolley, depending on the angle of elevation of the wires, takes place by a fairly simple means.

5 The proposed trolley design allows the installer to easily and quickly move it through the wires.

Claims (1)

Invention Formula 0 A trolley travel device for servicing an overhead power line by wire, comprising a braking system and a muscular travel drive, made in the form of two 5 sliding clamps for installation on wires, each of which contains a housing with a spring-loaded eccentric fixed on it on the axis, and a flexible connection fixed between the sliding housing 0 clamping and one of the sides of the cart, characterized in that, in order to reduce labor intensity during movement and reduce the time of work on the line, it is equipped with a system of blocks forming together with a flexible link a polyspast mounted on the body of each sliding clip and on one of the sides of the cart, additional blocks mounted on the opposite side of the cart, and the connection is flexible two branches, one of which is fixed between the sliding clamps and the stock. 16 3 I 8 7 w: it is put in additional blocks, and the friend in blocks of a polyspast. 1 / / 2 U