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Overview of Nanjing crane
Nanjing crane, crane, and crown crane are all general names people give to cranes. Crane cranes are basically the same as what we call cranes now. There are basically two types: one is centralized drive, that is, one motor is used to drive the long transmission shaft to drive the driving wheels on both sides; the other is separate drive, that is, the driving wheels on both sides are driven by one motor each. Medium and small bridge cranes mostly use a three-in-one driving method that combines brakes, reducers and motors. For ordinary bridge cranes with large lifting capacity, universal couplings are often used as driving devices for easy installation and adjustment.
Nanjing crane classification
Lifting machinery can be roughly divided into the following categories according to its functions and structural characteristics
1. Light and small lifting equipment
Characteristics of light and small lifting equipment It is lightweight, compact in structure, simple in movement, and the projection of the working range is mainly dots and lines. Light and small lifting equipment generally only has one lifting mechanism, which can only make a single lifting movement of heavy objects. Belonging to this category are jacks, pulleys, hand (gas, electric) hoists, winches, etc. Electric hoists are often equipped with a running trolley and a metal frame to expand the operating range.
2. Overhead crane
The characteristic of overhead crane is that it can vertically lift or horizontally move heavy objects hung on hooks or other fetching devices in space. The bridge crane includes a hoisting mechanism and large and trolley operating mechanisms. Relying on the coordinated actions of these mechanisms, heavy objects can be lifted and transported within a certain cubic space. Bridge cranes, gantry cranes, loading and unloading bridges, metallurgical bridge cranes, cable cranes, etc. all fall into this category.
3. Jib crane
The characteristics of jib crane are basically the same as those of bridge crane.
The boom crane includes a hoisting mechanism, a luffing mechanism, and a rotating mechanism. Relying on the coordinated action of these mechanisms, heavy objects can be lifted and transported within a certain cylindrical space. Boom-type cranes are mostly installed on vehicles or other forms of transportation (mobile) tools, thus forming an operating boom-type rotating crane. Such as truck cranes, tire-type cranes, tower cranes, gantry cranes, floating cranes, railway cranes, etc.
4. Elevator
The characteristic of an elevator is that heavy objects or retrieval devices can only be lifted and lowered along the guide rails. Although the elevator has only one lifting mechanism, there are many other ancillary devices in the elevator, so it forms a separate category, including elevators, freight elevators, ship lifts, etc. In addition, there are many ways to classify cranes. For example, according to the retrieval device and purpose, there are hook cranes, grab cranes, electromagnetic cranes, metallurgical cranes, stacking cranes, container cranes and rescue cranes, etc. According to the transportation method, there are fixed cranes, running cranes, Self-propelled cranes, towed cranes, climbing cranes, portable cranes, truck-mounted cranes, etc. are classified according to the driving mode. There are support cranes, suspension cranes, etc. classified according to the use occasions, including workshop cranes, machine room cranes, warehouse cranes, and storage cranes. Field cranes, construction cranes, engineering cranes, port cranes, shipyard cranes, dam crest cranes, shipboard cranes, etc.
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