Hand-operated pulley for substation

Abstract

A hand-operated pulley for a substation comprises a pulley support. A supporting shaft is fixed in the middle of the pulley support, a pulley wheel is installed on the supporting shaft, a crank is installed on the pulley wheel, a safety hook head is installed at the lower end of the pulley support, the pulley wheel is provided with a through hole, two straight rods are arranged in the through hole, two ends of every straight rod are positioned on the outer portion of the through hole, the lower ends of the straight rods are provided with wedge-shaped heads, tips of the wedge-shaped heads are downwards, wedge blocks are arranged on the upper portions of the straight rods, tips of the wedge blocks are upwards, the upper portions of the two straight rods are connected with a cylinder block, the bottom of the cylinder block is provided with a blind hole, the straight rods are inserted in the blind hole, a hole wall of the blind hole is provided with a wedge block hole, the wedge blocks penetrate through the wedge block hole, the top of the cylinder block is connected with a pull rope, and a spring piece is arranged between the two straight rods. The pull rope is fixedly connected with the pulley wheel, slippage of the pull rope and the pulley wheel is avoided, a device lifts stably, the pull rope is stressed evenly, and safety in pull rope use is guaranteed; different pull ropes can be replaced conveniently according to the difference of transported devices, the pull rope and the pulley wheel are convenient to dismantle and install, and working efficiency is improved.

Description

technical field [0001] The invention relates to a substation equipment, in particular to a substation hand pulley. Background technique [0002] In the process of substation repairing, the hand block can pull the pull rope with less effort, but the pull rope and the pulley of the pulley are slidingly connected, so slipping between the pull rope and the pulley often occurs during the pulling process, resulting in the transmission of equipment Extremely fast descent, the tension on the pull rope body increases, and the setting causes the pull rope to break, the conveying equipment falls and is damaged, and the staff is seriously injured. Although adopting fixed connection between the stay rope and the pulley can overcome the above-mentioned shortcomings, but according to the size and weight of the pulling equipment, the length and thickness of the stay rope are selected differently, and the stay rope is frequently replaced. The stay rope is connected to the pulley by knottin...

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