A working cycle of the crane includes: the picking device lifts the item from the picking place, then moves horizontally to the designated place to lower the item, and then performs a reverse movement to return the picking device to the original position for the next cycle. Generally, the lifting machinery consists of a lifting mechanism (to move the item up and down), a running mechanism (to move the lifting machine), a luffing mechanism and a slewing mechanism (to move the item horizontally), plus a metal mechanism, power device, and control And necessary auxiliary equipment. Multi-action hoisting machinery that vertically lifts and transports heavy objects within a certain range is also called a crane. It is mainly used for lifting and transporting finished items. It can also transport bulk and liquid materials when equipped with proper spreaders. The working characteristics of the crane are intermittent movements, that is, the corresponding mechanisms of taking, moving, unloading and other actions in a working cycle work alternately. Each mechanism is often in the working state of starting, braking and running in forward and reverse directions.
What are the crane accessories
Lifting accessories
LD wheels, wheel sets, drum sets, hook sets, pulley sets, couplings, wire ropes, cable pulleys, running motors, brakes, reducers, cable drums, overload limiters, standard parts.
Lifting appliances
Inverter, remote control, resistor, control panel, explosion-proof motor, explosion-proof electrical appliance, control cable, overload limiter, protection cabinet, explosion-proof limiter, limit switch, rail clamp, current collector.
Electric hoist accessories
Explosion-proof hoist accessories, metallurgical hoist accessories, running motor, high temperature resistant cable, high temperature resistant motor, handle button, lifting motor, rope guide, running sports car device, hoist speed change assembly, drum
Lifting accessories
Electric hoist, metallurgical hoist, chain hoist, hand hoist, monorail, grab, electric flat car, lifting electromagnet, lever hoist, sling, jack, hoist, bearing.
Common Crane Accessories Products
1. Wire rope.
Check that the wire rope specifications, model and slip drum match are in accordance with the design requirements. Whether the fixed end clamps of steel wire ropes, rope clamps, deeds, etc. are fixed to meet the requirements. Whether the wear, broken wires, kinks, squashed, bent, broken strands and corrosion of the steel wire rope exceed the standard.
2. Crane hook
Check whether the crane hook and anti-off device meet the requirements, whether the hook has cracks, peeling cracks and other defects; the hook cross section wears, the increase in opening degree, torsional deformation, whether it exceeds the standard; fatigue deformation and cracks on the neck and surface of the hook Pin and sleeve wear.
3. Coupling.
Whether the coupling parts are damaged or not, the connection is loose, and the impact is running. Whether the wear of the coupling, pin shaft, pin hole, buffer rubber ring exceeds the standard. Whether the coupling is concentric with the two parts being connected.
4. Reel.
Whether there are fatigue cracks or damage on the drum body and drum edge; whether the wear of the rope groove and the drum wall exceeds the standard; whether the height of the drum rim matches the winding layer of the steel rope; whether the working conditions of the rope guide and the rope row are in accordance Claim;
5. Braking device.
The setting of the brake, whether the type of the brake meets the design requirements, whether the brake rod and spring of the brake have fatigue deformation, cracks and other defects; whether the pin shaft, mandrel, brake wheel and brake friction plate are worn beyond the standard, and whether the hydraulic brake leaks oil ; Whether the braking clearance adjustment and braking ability can meet the requirements.
6. Pulley.
Whether the pulley is equipped with an anti-rope groove device; whether the pulley rope groove and rim have cracks, broken edges, excessive wear and other conditions, and whether the pulley rotates flexibly.
7. Wheels.
Are there any fatigue cracks on the treads and axles of the wheels, and whether the wear on the axles of the treads on the wheels exceeds the standard. Is there any biting phenomenon during operation?
8. Reducer.
Are there any abnormal sounds such as severe metal friction sound, vibration, shell radiation, etc. during the operation of the reducer; whether the shaft end is well sealed, whether the fixing bolts are loose or defective; the lubricating oil selection of the reducer, the oil level, and the vertical reducer lubrication Whether the operation of the oil pump and the lubrication of the open gear transmission meet the requirements.
Lifting equipment classification
Lifting equipment can be divided into light and small lifting equipment, elevators, cranes and overhead monorail systems according to different structures. Light and small lifting equipment mainly includes lifting pulleys, spreaders, jacks, manual hoists, electric hoists and ordinary winches, most of which are small in size, light in weight and easy to use. Except for electric hoist and winch, most of them are driven by manpower, which is suitable for occasions where the work is not heavy. They can be used alone, and some can also be used as a lifting mechanism for cranes. Some light and small lifting equipment has a great lifting capacity. For example, the lifting capacity of hydraulic jacks has reached 750 tons. The elevator is mainly used for vertical or near-vertical lifting movement, and has a fixed lifting route, including elevators, lifting platforms, mine elevators and hopper elevators. A crane is a multi-action lifting device that lifts vertically and transports heavy objects horizontally within a certain range.
