What is the working principle of a crane? thank you
Operation organization The job organization consists of four major organizations, called the crane, that rise, run, change, and rotate. (1) lifting organization, is used to complete the material straight lift organization, is any crane hoisting machinery no shortage of some, it is the most basic and the most primary organization crane. (2) working group, is a crane or lifting the car running to complete transfer of material organization, has the branch of trackless and rail operation operation, according to its drive to different divided into self-propelled and traction type two kinds.
Metal layout Metal layout is a metal rolling steel (e.g., Angle steel, channel steel, i-steel, steel pipe, etc.) and steel plate as a basic component, through the way such as welding, riveting, bolts to connect, according to the rules of cohesion, accept the gravity and load of the crane steel layout. The metal layout is about 40% to 70% of the unit's components, and the heavy crane can reach 90%. It accounts for more than 30% of the total cost of the machine. Metal layout according to the layout can be divided into the solid-web (made of steel plate, also known as box layout) and lattice (usually made from steel, common root and lattice column has two kinds, the fundamental mechanical components of crane metal layout. These fundamental mechanical components have column (axial force component), beam (flexural member) and boom (hydraulic components), different combinations of various components function of different crane. Stress and disorderly, the serious, consumables and more overall mobility is crane operation feature of layout.
The fetch equipment The equipment is the equipment of hoisting, grasping, sucking, clamping, holding or otherwise, connecting materials to cranes. Depending on the variety, shape and volume of the material, different kinds of equipment are chosen. For example, a piece of goods is used for hanging hooks and rings; (such as grain, ore, etc.) commonly used in the bucket and hopper; The liquid material is used for holding cylinder and can etc. Also has the special sling for special material, such as lifting long material lifting overhead monorail system Lifting beam, lifting guide magnetic materials magnetic chuck, specifically for metallurgical parts, such as using rotating hook, and spiral discharge and fetch equipment such as bucket wheel unloading, as well as the special container spreader, etc. Suitable fetching equipment can reduce the labor intensity of the workers and greatly improve the efficiency of the work. Avoid falling objects, make sure that the safety and safety of the personnel are not damaged, which is the basic requirement for the safety of the equipment.
3) the change of the organization is the operation organization of the arm crane. The variable structure changes the length and elevation of the arm frame to alter the operating ups and downs. (4) the rotating organization is a straight axis for the arm frame around the crane, moving the material in the circular space. A crane moves through an organization's solo or multi-organizational movement to reach the purpose of transferring material
Lifting lifting or lifting and moving heavy lifting machine through lifting hook or other fetching equipment. The process of lifting machinery is usually involved in the process of raising, running, lowering and returning. Lifting organization after picking up equipment, weight from the fetch address after the operation, reverse shift weight or range of organizations, in the specified address down the weight come back to the in situ. Drive equipment The drive device is used to drive the power equipment of the job organization. Common drivers are power driven, internal combustion engines and human drivers. Power is the power of clean, economic, electric drive is the primary drive type, modern crane operation over a limited range of rail crane, elevator, the elevator choose electric drive. The use of an internal combustion engine for moving cranes, such as car cranes, tyre cranes and caterpillar cranes, can be moved remotely. Manual drive is suitable for small lifting equipment, as well as temporary power for auxiliary, spare and unexpected (or incident) of some equipment.
