According to their functions and structural characteristics, hoisting machinery can be roughly divided into the following 4 categories.
1. Light and small lifting equipment
Lightweight and small lifting equipment are characterized by lightness, compact structure, and simple action. The projection of the working range is mainly dots and lines. Lightweight and small lifting equipment generally have only one lifting mechanism, which can only make a single lifting movement for heavy objects. It belongs to this category: jacks, pulleys, hand (pneumatic, electric) hoist, winches, etc. Electric hoists are often equipped with running trolleys and metal frames to expand the scope of operations.
2. Bridge crane
The characteristic of the bridge crane is that the heavy objects hanging on the hooks or other retrieval devices can be vertically lifted or moved horizontally in the space. Bridge cranes include: lifting mechanism, large and small vehicle operating mechanism. Relying on the coordinated actions of these agencies, heavy objects can be lifted and moved in a certain cubic space. Bridge cranes, gantry cranes, loading and unloading bridges, metallurgical bridge cranes, and cable cranes all fall into this category.
3. Boom crane
The characteristics of jib cranes are basically the same as those of bridge cranes.
Boom cranes include: lifting mechanism, luffing mechanism, and rotating mechanism. Relying on the coordinated actions of these mechanisms, heavy objects can be lifted and transported in a certain cylindrical space. Boom-mounted cranes are mostly installed on vehicles or other forms of transportation (mobile) tools, which constitute a running-boom rotary crane. Such as truck cranes, tire cranes, tower cranes, portal cranes, floating cranes, railway cranes, etc.
The feature of the elevator is that the heavy object or the retrieval device can only be raised and lowered along the guide rail. Although the elevator has only one lifting mechanism, there are many other auxiliary devices in the elevator, so it is a separate category, which includes: elevators, freight elevators, ship lifts, etc.
In addition, there are multiple classification methods for cranes. E.g:
Classified by picking device and purpose: hook crane, grab crane, electromagnetic crane, metallurgical crane, stacking crane, container crane and rescue crane, etc.
Classified according to the transportation method: there are fixed cranes, running cranes, self-propelled cranes, towed cranes, climbing cranes, portable cranes, truck-mounted cranes, etc.;
Classified by driving mode: supporting cranes, hanging cranes, etc.;
Classified by use occasion: there are workshop cranes, machine room cranes, warehouse cranes, storage yard cranes, construction cranes, engineering cranes, port cranes, shipyard cranes, dam crest cranes, ship cranes, etc.
Dotrum Machinery is a reliable crane supplier for global market. The main products are CD1 MD1 type 0.5t-16t electric hoist, HC type 16t-32t electric hoist, 1t-20t electric single beam overhead crane, 5t-320t electric double beam overhead crane,