Crane is a lifting and handling machine widely used in ports, workshops, electric power, construction sites and other places. The name of crane is the unified title of lifting machinery. below Huai'an Crane Rental We will introduce the equipment structure of the crane to you.
The frequent cranes are mainly truck cranes, crawler cranes and tire cranes. The crane is used for hoisting equipment, rescue, hoisting, machinery and rescue. Crane is the common name of crane. Crane is a kind of lifting machinery, which is a kind of machinery for cyclic and intermittent movement. One working cycle includes: the picking device lifts the object from the picking place, then moves horizontally to the designated place to lower the object, and then moves in the opposite direction to make the picking device return to the original position for the next cycle. Such as fixed slewing cranes, tower cranes, truck cranes, tires, crawler cranes, etc. Multi action hoisting machinery that can vertically lift and horizontally transport heavy objects within a certain range. It is also called crane. It belongs to material handling machinery. The working feature of the crane is intermittent movement, that is, the corresponding mechanism of reclaiming, migration, unloading and other actions in a working cycle works alternately.
The crane mainly includes lifting mechanism, running mechanism, luffing mechanism, slewing mechanism and metal structure. The hoisting mechanism is the basic working mechanism of a crane, which is mostly composed of a hoisting system and a winch. It also lifts heavy objects through a hydraulic system. The running mechanism is used to move the weight vertically and horizontally or adjust the working position of the crane. It is generally composed of motor, reducer, brake and wheel. The luffing mechanism is only equipped on the jib crane. When the jib is raised, the amplitude decreases, and when the jib is lowered, the amplitude increases. There are two types of luffing: balanced luffing and unbalanced luffing. The slewing mechanism is used to rotate the boom, and is composed of a driving device and a slewing bearing device.
The metal structure is the skeleton of the crane, and the main bearing parts such as bridge, boom and gantry can be box structure or truss structure, or web structure, and some can use section steel as the support beam. Widely used in ports, workshops
Lifting and handling machinery at the construction site and other places. Cranes are used for lifting equipment, rescue, lifting, machinery and rescue. Type of crane:
A. Mobile: truck crane, crawler crane, traveling crane, etc.
B. Fixed type: dock crane, tower crane, gantry crane, etc.
Crane is a unified name. Generally speaking, cranes refer to truck cranes, crawler cranes and tire cranes. Good maintenance is not only directly related to the safety of crane machinery, but also determines whether the crane machinery can maintain its subsequent vitality and extend its service life, thus creating more economic benefits. During the long-term use of cranes, some parts and connectors will inevitably become loose, corroded, aged, damaged, etc. due to vibration, friction and other factors. In order to extend the service life of the crane, reduce the failure rate of equipment, reduce and eliminate potential safety hazards, it is very necessary and important to regularly maintain the crane.
Only by regularly inspecting, maintaining and maintaining the crane, lubricating the parts to be lubricated, fastening the parts to be tightened, repairing and replacing the vulnerable parts, can the hidden trouble of equipment be eliminated in time, the accident rate be reduced, the crane operate more safely, and better economic benefits be created. Check the status of the hydraulic system, replace the worn, deformed, cracked and corroded parts, and check the reliability of the feed device, controller, overload protection and safety protection device for the electrical control system. Check the fault signs caused by leakage, pressure, temperature, vibration, noise and other reasons of the crane through test operation. Through observation, subjectively inspect the structure, support and transmission parts of the crane, understand the technical status of the crane, and check and determine the fault source of the abnormal phenomenon.
The driver is responsible for the routine maintenance items, mainly including cleaning, lubrication of transmission parts, adjustment and fastening. Test the sensitivity and reliability of the safety device through operation, and monitor whether there is abnormal sound during operation. The crane user unit shall regularly check and maintain the crane tools in use, and develop a regular inspection management system, including daily inspection, weekly inspection, monthly inspection and annual inspection. The dynamic monitoring of the crane shall be carried out. Any abnormal situation shall be found at any time and handled in a timely manner, so as to ensure the safe operation of the crane tools. When the steel wire rope keeps passing through the pulley groove and drum, the steel wire rope shall be checked on schedule. For untwisted steel wire rope, because of its special structure, the fixed pitch between the original strands must not be damaged or interfered with when winding, so as to prevent the rope core from sliding or the outer strand from loosening to form a bird cage shape. The steel wire rope is an important part of the hoisting mechanism. Under the condition of ensuring the manufacturing quality, the service factors have a great impact on the service life of the steel wire rope. Otherwise, the wire rope will diverge during winding on the drum, thus reducing the service life of the wire rope.
