A self-balancing pay-off block and traction plate for tension stringing

Abstract

The invention relates to power transmission and transformation wire construction equipment and specifically relates to a tension stringing self-balancing wire paying-out tackle and a towing plate. The tension stringing self-balancing wire paying-out tackle comprises a dual-yoke plate, parallel hanging plates and a wire paying-out tackle for an odd number of conductive wires. The two ends of the lower portion of the dual-yoke plate are both connected to the wire paying-out tackle for the odd number of conductive wires through the parallel hanging plate. The wire paying-out tackle for the odd number of conductive wires comprises eccentric yoke plates, bilaterally-door opening mechanisms, pulleys and rack bodies. The upper portions of the eccentric yoke plates are connected with the parallel hanging plates. One end of the lower portion of each eccentric yoke plate is connected to a corresponding rack body, and the other end of the lower portion of each eccentric yoke plate is connected to the rack body via a corresponding bilaterally-door opening mechanism. An odd number of pulleys are arranged in the rack bodies. A hauling rope passes through the pulley in the middle position in each wire paying-out tackle for the odd number of conductive wires. One end of each hauling rope is connected to a traction machine, and the other end of the hauling rope is connected to one end of a corresponding eccentric yoke plate. The other end of each eccentric yoke plate is connected to conductive wires. The conductive wires pass through the pulleys positioned on the two sides of the middle pulleys. In a whole wire paying-out process of the tension stringing self-balancing wire paying-out tackle of the invention, phenomena of turnover, offset and imbalance will not occur, and conductive wire paying-out is balanced and smooth.

Description

technical field [0001] The invention relates to construction equipment for power transmission and transformation lines, in particular to a self-balancing pay-off pulley and a traction plate for tension stringing. Background technique [0002] UHV DC transmission line projects mostly use six-split conductors. As the cross-section of conductors becomes larger and larger, the existing construction scheme mainly adopts the construction technology of "3 × one lead two". This "3×one pull two" construction technology has the disadvantages of requiring more equipment, more suspension blocks, more wire ropes, more time-consuming construction, and is not conducive to the operation of tightening lines and accessories. [0003] There is also the construction technology of "one lead two + one lead four", this construction technology has a relatively large traction, high mountains, large spans or 1000mm 2 When the above-mentioned large cross-section conductors are erected, it is difficul...

AI Technical Summary

Problems solved by technology

This "3×one pull two" construction technology has the disadvantages of requiring more equipment, more suspension blocks, using more steel wire ropes, and more time-consuming construction, which is not conducive to the operation of tightening lines and accessories.

[0003] There is also the construction technology of "one lead two + one lead four", this construction technology has a relatively large traction, high mountains, large spans or 1000mm 2 When the above-mentioned large cross-section conductors are erected, it is difficult to meet the construction needs with the existing 28-diameter traction rope and 28-ton traction machine, and it is necessary to purchase large-scale construction equipment, which increases costs; at the same time, due to excessive traction tension, safety risks increase.

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