Novel large-tonnage duplex luffing mechanism used for pile-surrounding type crane

Abstract

The invention discloses a novel large-tonnage duplex luffing mechanism used for an pile-surrounding type crane; the novel large-tonnage duplex luffing mechanism comprises two winches which are connected by a universal shaft joint; each winch comprises two welded additive bases and two common bases; each common base is provided with a main shaft bearing support; a winding drum is arranged between two main shaft bearing supports; one side of the winding drum is provided with an outside baffle and a brake hub, while the other side of the winding drum is provided with an inside baffle and a winding drum gear sleeve; a ratchet wheel is arranged on the part between the inside baffle and the winding drum gear sleeve; the back part of the upper surface of a cross plate is provided with a ratchet wheel stopper which corresponds to the ratchet wheel; a big gear wheel of an open-type transmission gear pair is sleeved in the winding drum gear sleeve; one side of the open-type transmission gear pair is provided with six planetary gear reducers; and each planetary gear reducer is connected with a hydraulic motor. The large-tonnage duplex luffing mechanism has the following advantages of compact structure, small overall dimension, light weight, steady quality and reliable property.

Description

technical field [0001] The invention relates to a large-tonnage duplex luffing mechanism used for a pile-encircling crane. Background technique [0002] At present, in order to increase the stability and lifting capacity of the crane operation on the offshore platform or crane ship operating on the sea, the platform or crane ship has added three or more jacking fixed platforms or crane ships. Since the pile occupies most of the space on the ship, in order to arrange it reasonably, the large-tonnage crane is directly designed and installed on the pile, and the crane rotates around the center of the pile, so the crane is called a slewing crane. Due to the large tonnage of the crane winch, generally 2×600KN, the luffing mechanism needs to be installed on the rear platform of the crane, that is, the boom or hook and the luffing mechanism are respectively arranged at the front and rear of the pile, and the luffing mechanism needs to pull out the rope from the pile. The arrangeme...

AI Technical Summary

Problems solved by technology

Due to the large tonnage of the crane winch, generally 2×600KN, the luffing mechanism needs to be installed on the rear platform of the crane, that is, the boom or hook and the luffing mechanism are respectively arranged at the front and rear of the pile, and the luffing mechanism needs to go out from the pile. The arrangement on both sides of the column, due to the influence of the pile, because the diameter of the pile is large, more than 6 meters, it brings great difficulties to the design of the mechanism, the layout of the rope and the rear platform

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