Automatic protective device of soft ladder hook for high voltage power transmission line
A high-voltage transmission line, automatic protection technology, applied in the direction of overhead lines/cable equipment, ladders, buildings, etc., to achieve the effect of simple operation, clear process and flexible operation
Inactive Publication Date: 2011-09-21
西安供电局 +1
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Problems solved by technology
The traditional ladder hook insurance method is useless in this important link
Method used
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[0023] Such as figure 1 , figure 2 Shown, the present invention comprises the power source-extensor 6 installed between the ladder hooks, and its connection mode with the ladder hooks is: adopt positive and negative threaded buckles to connect. Before the operator boards the ladder, at first tighten the reasoning nut on the driving gear, so that the driving gear 10 and the passive gear 9 are engaged. Afterwards, as long as the operator boards the ladder and exceeds more than 25kg in weight, the telescopic device 6 will move downwards, and the wire rope at the top of the telescopic device 6 will drive the power transmission shaft 12 to rotate in the forward direction. The clockwork shrinks and stores energy. The rocking arm in the clutch guide part swings at this moment, drives safety pin 3 to safety position.
[0024] Wherein the rocker arm 2 assembly includes: the lower end of the rocker arm 2 is inlaid with the driven gear wheel 9 and is welded on the plane, and the driv...
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The invention discloses an automatic protective device of a soft ladder hook for a high voltage power transmission line. The device comprises a wall-combined type expansion piece installed in the middle of the soft ladder hook, wherein a steel wire rope is connected at the upper end of the expansion piece; the other end of the steel wire rope is fixed and wound on a transmission shaft; a return spring and a thrust bearing are installed at one end of the transmission shaft; a clutch guide part is arranged at the other end of the transmission shaft and is provided with a driving mesh gear; a nut is designed in the center of the driving mesh gear and moves by being matched with a screw designed on the transmission shaft; the lower end of a rocker arm is welded with a driven mesh gear in a plane; a support bearing is arranged in the rocker arm; an opening is arranged in the proper position of the upper end of the rocker arm; the upper end of the rocker arm is movably riveted with the upper end of a safety pin; a magnet is installed at the upper end of the rocker arm; and the safety pin is of a chute structure and is connected with the top end of the rocker arm through movable riveting. The device has the following advantages: the device is safe and reliable, flexible to operate, simple and practicable; the problem of deficiency of the safety protection technology of the soft ladder hook is solved; and automatic protection of the soft ladder hook in use is realized.
Description
technical field [0001] The invention relates to the technical field of live maintenance (construction) of high-voltage transmission lines, in particular to an automatic protection device for hooks of soft ladders of high-voltage transmission lines. Background technique [0002] In order to ensure the safe and stable operation of high-voltage transmission lines and improve the reliability of power supply of enterprises, soft ladders are often used in live maintenance (construction) of high-voltage transmission lines. Its advantages are: light and stable, easy to carry and widely applicable. It is an indispensable special tool in line live maintenance (construction). [0003] As a ladder hook for hanging wires and carrying loads, its safety device should be closed before the operator climbs the ladder, and the safety system will automatically open after the operator finishes working at heights and descends from the ladder to the ground, so as to ensure that the ladder hook is...
Claims
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IPC IPC(8): E06C7/48H02G1/02
Inventor 郑远锋王少敏王琨王连柱许阳
Owner 西安供电局