Novel cargo boom

Abstract

The invention discloses a novel cargo boom. The novel cargo boom comprises a base; a fixed seat is fixedly installed on the left side of the upper end of the base; a fixing shaft III is fixedly installed in the middle of the upper side in the fixed seat; the middle of the fixing shaft III is provided with an outer ring in a sleeved mode; rotary discs I are symmetrically and fixedly installed at the left end and the right end of the outer ring; limiting slots II are arranged at the middles of one sides, close to the outer sides, of the rotary discs I; a plurality of limiting blocks II are fixedly installed on the inner ring walls of the limiting slots II; the left end and the right end of the fixing shaft III are symmetrically provided with rotary discs II in a sleeved mode; a plurality oflimiting blocks I are fixedly installed on the two ring sides of the rotary discs II; and the limiting blocks I and the limiting blocks II are connected in a staggered and clamped mode; the rotary discs II and the limiting slots II are correspondingly arranged; a plurality of hydraulic cylinders II are annually arranged on one end faces of the outer sides of the rotary discs II; the other ends ofthe hydraulic cylinders II are fixedly installed on the fixed seat; a telescopic long arm is fixedly installed at the front end of the outer ring; and a fixing shaft I is fixedly installed in the middle of the front end of the telescopic long arm. When in use, a whole amplitude-change pole is pulled by using a motor, and the oblique angle amplitude is changed, so that pitching swing is carried out, and the usability is improved.

Description

technical field [0001] The invention relates to a boom, in particular to a novel boom. Background technique [0002] The boom is a very important device on the crane. The jib is used to support the lifting of the container, and to make the loading and unloading bridge have a certain lifting height and width. It is divided into front arm and rear arm. The front outrigger can be pitched or telescopically moved, which is convenient for docking when the ship is loading and unloading. According to the structure type, there are truss booms, box booms and so on. The jib is commonly known as the jib, boom. Bi-directionally bent metal structural parts supporting hoisting ropes, fetching devices or luffing trolleys. It is supported on the turntable or tower of the crane by connecting pins, wire ropes or hydraulic cylinders. For the boom that can be pitched and swung, its inclination angle is changed by the luffing mechanism to change the amplitude and lifting height of the crane...

AI Technical Summary

Problems solved by technology

According to different structures, it can be divided into lattice jib and box jib; according to different functions, it can be divided into crane jib, main jib, auxiliary jib, telescopic jib, folding jib, goose head, etc., but the existing The jib is on the luffing mechanism, simply changing the inclination angle will cause a large force on the front end of the device, which has high requirements on the load-carrying capacity of lifting objects. At the same time, the current jib is not good for the self-protection mechanism.

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