Lifting machinery classification
There are four categories of light and small lifting equipment, bridge type lifting machinery and boom type cranes, and cable cranes. Light and small lifting equipment such as: jacks, pneumatic hoist, electric hoist, balance hoist (also known as balance crane), hoist and so on. Bridge type lifting machinery such as beam cranes, etc. Boom type cranes such as fixed slewing cranes, tower cranes, truck cranes, tire cranes, crawler cranes, etc. Cable cranes such as lifts.
According to the lifting nature: mobile crane, tower crane, mast crane.
Divided by driving mode: one type is centralized drive, that is, a motor drives a long drive shaft to drive the active wheels on both sides; the other type is separately driven, that is, the active wheels on both sides are driven by a motor. Medium and small bridge cranes mostly use the "three-in-one" drive method in which brakes, speed reducers and motors are integrated. For ordinary bridge cranes with large lifting weights, to facilitate installation and adjustment, universal couplings are often used as the drive .
According to the structure, the crane is mainly divided into light and small lifting equipment, bridge type (bridge type, gantry crane), boom type (self-propelled, tower type, gantry type, railway type, pontoon type, mast type crane), Cable style.
The characteristics of light and small lifting equipment are light weight, compact structure, simple operation, and the projection of the working range is mainly dots and lines. Light and small lifting equipment generally have only one lifting mechanism, which can only make a single lifting movement of heavy objects. Those that fall into this category include: jacks, tackles, hand (pneumatic, electric) hoists, winches, etc. Electric hoists are often equipped with running trolleys and metal frames to expand the scope of work.
