High-performance hook free falling hoisting mechanism

Abstract

In the prior art, hoisting mechanisms with the hook free falling function have two structures, wherein one structure is achieved by directly adding a sleeve outside a hoisting gear box and controlling the sleeve and a reel through a clutch, and the other structure is achieved by controlling high speed gear ring of the gear box through the clutch; non of the two structures has the wire rope anti-slip function, the wire rope is easy to detach and the rope is at mess; moreover, the conventional hoisting mechanisms have the designing problems of low work efficiency, high energy consumption, incomplete and loose structure, difficulty in manufacturing, high cost, and the like. According to the invention, a dry clutch is used to directly control the reel, so as to achieve the function of hook free falling; when the free falling hook is at work, non of a planet reduction gear, a wet multi-sheet brake, and a driving hydraulic motor is at work; the high-performance hook free falling hoisting mechanism is high in efficiency, low in energy consumption, and simple in structure, realizes wire rope anti-slip and protection function by controlling through a caliper disc brake; the high-performance hook free falling hoisting mechanism solves the congenital deficits of a conventional product in aspects of scheme, structure, and technology, and can excellently meet the requirement of a user in the particular aspect of energy conservation and emission reduction.

Description

technical field [0001] The invention relates to a hoisting mechanism for lifting equipment. Background technique [0002] The free-falling hook hoisting mechanism is more and more widely used in construction machinery lifting equipment, which can greatly shorten the time for lowering the empty hook and improve work efficiency, especially in the use of dynamic compaction machines. At present, there are two types at home and abroad: the first type: Chinese patent 201120037986.1 discloses a new hoisting mechanism with free-falling hook function, as attached figure 1 shown. This structure directly adds the coupling cylinder 5 outside the existing winch reducer 4, and realizes the free decoupling function by connecting the shaft 6, the internal expansion clutch 10, the bearing 81 with the winch 7, the left bracket 1, and the right bracket 2. An extra coupling bearing and shaft are added outside the reducer, which has a huge and uncompact structure, which is difficult to manufac...

AI Technical Summary

Problems solved by technology

In this structure, the reel 4 is directly connected to the shell of the reducer 3, and is realized by controlling the inner ring gear of the winch reducer 3 through the clutch 5. Although the structure is relatively compact, when the free-falling hook is realized, the reducer 3 ring gear and its internal gears The transmission system rotates at high speed, with low efficiency and high energy consumption; the drum control is completely dependent on the clutch 5, which has poor reliability, and the wire rope is easy to detach and mess up the rope; Existence loss

[0003] These two structures have problems such as low work efficiency, high energy consumption, imperfect and compact structure, difficult manufacturing, and high cost.

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