Folding arm overhead cranes Introduction

Folding arm overhead cranes Introduction

Knuckle boom  lift hoist  is lifting height plus one, is a for loop, intermittent motion machinery. A work cycle include: extract extract means to put items from the lift, and then move to the designated place lower level items, followed by a reverse movement, so extract unit returns to original position for the next cycle
Usually by a crane hoisting mechanism (the items up and down movement), operating agencies (the lifting movement), luffing and slewing mechanism (the article for horizontal movement), plus the metal body, power units, steering control and the necessary combination of auxiliary devices.
     Knuckle boom cranes including  lift hoist   operation mechanism, luffing mechanism, slewing mechanism and metal structures.
     Crane hoisting mechanism is the basic work of institutions, mostly by hanging system and winch components, there are also lifting heavy objects through the hydraulic system.
     Operating agencies to transport heavy loads or adjust the level of vertical crane working position, usually by the motor, speed reducer, brake and wheel components. Luffing jib crane in only with, the amplitude decreases when the jib looked up, bent over when the amplitude increases, the amplitude of balanced and unbalanced luffing two kinds.
     Rotating mechanism for rotating the boom is driven by the device and the rotary bearing device component.
Hoist and trolley metal structure is the skeleton, the main carrier such as bridge, boom and mast for box-shaped structure or truss structure, but also for the web structure, and some can be used as a steel support beam.