Three-fork connecting rod self-adjusting coil spreader

Abstract

The invention discloses a three-fork connecting rod self-adjusting type coil hoist. Hanging lugs are arranged on the hanging pan, and the hanging lugs are connected to the lifting chain through a D-shaped buckle. The center of the hanging pan is fixed with a guide sleeve; the ring wire The screw body of the rod passes through the guide sleeve and is sequentially set with a movable limit sleeve, an adjusting nut, a three-fork joint arm sleeve and a safety nut. The outer circumference of the three-fork joint arm sleeve is fixed with a connecting lug, and the connecting lug is connected to the movable joint through the bolt. Arm connection; the support arm is fixed under the hanging pan, the support arm is fixed with the first fixed arm, the first fixed arm is connected to one end of the boom through bolts, the other end of the boom is provided with a side hook, and the middle section of the boom The position is fixed with a second fixed arm, and the second fixed arm is connected with the movable arm through bolts. The invention has a simple structure, is easy to manufacture and is easy to operate. Lifting operators can operate remotely and quickly complete the lifting operation, effectively improving work efficiency and safety factor, improving the working environment and reducing labor intensity.

Description

technical field [0001] The invention relates to a sling for hoisting a coiled product with internal voids, in particular to a self-adjusting coiled sling with a three-fork link. Background technique [0002] With the development of modern economy and technology, large single heavy coils are gradually replacing straight round steel and widely used in transportation, equipment manufacturing, electronics industry, hardware and home appliances, light steel structure, construction and other industries. In order to reduce the development requirements of energy consumption, high-strength steel is gradually replacing medium-strength steel. Most high-strength steels require heat treatment (eg: spheroidizing annealing, stress relief annealing, etc.) before cold working (eg: drawing, upsetting, turning, etc.). At present, domestic coil heat treatment generally adopts well furnace , due to the special structure of the pit furnace, the weight of the coil (generally ≥ 2 tons / reel), and t...

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Problems solved by technology

[0004] The "three-claw spreader" disclosed by the Chinese patent (publication number: CN202107424U) is also used for lifting objects with internal voids, but it can be known from the structure of the patent that there must be radial steps at the bottom of the object to be lifted Or there is space for the boom to lift the object, and at the same time, the free end of the steel rope is designed to be manually pulled. Although the pulley labor-saving device is used, after all, the manpower is limited, so the weight of the lifting object is very limited; on the other hand, the lifting It is required that the person must be placed under the sling + the hoisted object to pull the free end of the steel rope for hoisting, which poses a major safety hazard

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