High-speed hoisting tackle

Abstract

The invention relates to a high-speed hoisting tackle belonging to electric power circuit construction equipment and comprising a first pulley yoke, a second pulley yoke, a pulley and a latching mechanism. The high-speed hoisting tackle is characterized in that the center of the pulley is provided with a bearing hole; a bearing is arranged in the bearing hole; the bearing is fixed on the middle part of a pivot; one end of the pivot is supported on the middle part of the first pulley yoke, and the other end is supported on the middle part of the second pulley yoke; the latching mechanism comprises a lifting hook and a hinge body which is formed by an upper hinge plate and a lower hinge plate; a pivot head extends at one side of the lifting hook; the pivot head is supported at the upper end of the first pulley yoke; a bolt shaft head extends at the other side of the lifting hook; the lower end of the upper hinge plate is hinged with the upper end of the lower hinge plate, and the upper end thereof is provided with a bolt hole; the bolt shaft head is matched with the bolt hole; and the middle part of the lower hinge plate is supported on the pivot, and the lower end thereof is supported on a connecting pin. The invention has the advantages that the pulley can be prevented from being jammed in the working process; the high-speed hoisting tackle has simple and practical structure, can ensure that the opening and locking operations are convenient and fast and does not need any tool.

Description

technical field [0001] The invention belongs to the technical field of power line construction equipment, and in particular relates to a high-speed lifting tackle. Background technique [0002] The high-speed lifting block, also referred to as block or pulley for short, is an indispensable construction equipment in the construction of power transmission and transformation lines. There have been related technical reports in Chinese patent literature. The utility model patent authorization announcement number CN201504051U recommends a wire pay-off pulley and a pulley using the wire pay-off pulley. The technical point of the scheme is on the rim of the pulley body A through hole is opened from one side to the other side, and rubber is lined on the pulley body. Due to the existence of the through hole, the rubber lining on both sides of the pulley body can be combined with each other through the through hole, that is to say, the rubber lining layer and the pulley body can be re...

AI Technical Summary

Problems solved by technology

In addition, the lifting block in the prior art generally has the technical problem that the latching of the left and right pulley frames is troublesome and the latching is unsafe and reliable, because if the pulled cable is to be placed on the pulley, it must be Open the latch mechanism first, and then lock the latch mechanism after the cable is placed on the pulley (latch)

However, because the opening and closing operation of the latching mechanism on the lifting block in the prior art needs tools such as a wrench to tighten or remove the nut, it takes a long time and the operation is cumbersome.

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