Heavy-duty steel pile lifting clamp of cutter-suction dredge

Abstract

The invention discloses a heavy-duty steel pile lifting clamp of a cutter-suction dredge in the field of engineering lifting technology. The heavy-duty steel pile lifting clamp comprises two clamping components with a symmetrical structure, the heads and the tails of the two clamping components are fixed by pin shafts and radially arranged on the outside circumference of steel piles of the dredge, and the clamping components comprise a first main lifting arm, a second main lifting arm, a first auxiliary lifting arm, a second auxiliary lifting arm, a first crank arm and a second crank arm, wherein the first main lifting arm, the second main lifting arm, the first auxiliary lifting arm and the second auxiliary lifting arm are symmetrically pinned on the first crank arm and the second crank arm which are arranged oppositely respectively. While quickly generating a clamping force when the steel piles are lifted, the heavy-duty steel pile lifting clamp makes the contact forces of the clamp and the steel piles evenly distributed; and when the clamp is opened, the even opening degree is large enough, so that the lifting clamp can freely ascend and descend to avoid the friction with the steel piles.

Description

technical field [0001] The invention relates to a device in the technical field of hoisting machinery, in particular to a heavy-duty steel pile lifting fixture of a cutter suction dredger. Background technique [0002] The steel piles of modern large-scale cutter suction dredgers that adopt steel pile positioning weigh more than 100 tons, and most of them are equipped with command rope lifting systems. The steel piles are all seriously worn, which affects the service life of the commander rope and the steel piles; the second is that the friction between the commander rope and the steel piles should not be controlled, slipping will occur, and the operating efficiency is not high. Therefore, there is a need for a heavy-duty steel pile lifting fixture with uniform clamping force, sufficient friction, durability and high efficiency. [0003] After searching the literature of the prior art, it was found that Zhang Zhixue published "New Splinting Pile Lifting System—Elaboration o...

AI Technical Summary

Problems solved by technology

[0002] The steel piles of modern large-scale cutter suction dredgers that adopt steel pile positioning weigh more than 100 tons, and most of them are equipped with command rope lifting systems. The steel piles are all severely worn, which affects the service life of the commander rope and the steel piles; second, the friction between the commander rope and the steel piles is not suitable for control, and slippage will occur, and the operating efficiency is not high

Its disadvantages are: the contact part between the ring plate and the steel pile is a fixed clamping plate and an adjustable clamping plate, the contact surface is small and uneven, resulting in serious wear of the steel pile and the clamping plate; when the steel pile is lifted, the ring plate is tightened It is still in contact with the steel pile, which also causes the wear of the steel pile and the clamping plate; the friction force is generated by the inclination of the locking ring plate, and it is prone to slipping due to insufficient friction force

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