There are many models of cranes, and we often say that driving is also a branch of the crane. Let the port crane main host explain to us the characteristics of different cranes:
Port Crane Expert: First we understand how the crane works:
Crane operating principle:
The crane operating mechanism generally only uses four active and driven wheels. If the lifting weight is large, it is common to increase the wheel to reduce the wheel pressure. When the number of wheels exceeds four, the articulated equalization frame device must be used to evenly distribute the load of the crane on each wheel.
Our factory specializes in lifting and driving production:
The main beam is rigidly connected to the end beam, and the ends of the end beam are provided with wheels for supporting the bridge to run on the elevated frame. The main beam is welded with a track for the lifting trolley to run. The main types of the main girder of the bridge are more typical of box-shaped structure, four-truss structure and hollow truss structure.
The metal structure of the bridge consists of main beam and end beam, which are divided into two types: single main beam bridge and double girder bridge. The single main girder bridge consists of a single main beam and end beams on both sides of the span. The double girder bridge consists of two main beams and end beams.
Features of beam cranes:
Beam cranes mainly include single girder bridge cranes and double girder bridge cranes.
The main beam of the single-girder bridge crane bridge adopts the combination section of I-shaped steel or steel type and steel plate. Lifting trolleys are often assembled with chain hoists, electric hoists or hoists as components of the hoisting mechanism.
According to the bridge support type and suspension type. The former bridge runs along the crane track on the vehicle beam; the latter bridge runs along the crane track suspended under the factory roof. Single girder bridge cranes are divided into manual and electric. Manual single-girder bridge cranes have lower working speed and smaller lifting capacity, but their own quality is small, which is easy to organize production and low in cost. When used without power supply, the amount of transportation is small, and the speed and productivity are not high. The occasion. The manual single girder bridge crane adopts the manual monorail trolley as the running trolley, and the chain hoist is used as the hoisting mechanism. The bridge frame is composed of the main beam and the end beam. The main beam is usually made of single I-beam, and the end beam is welded with steel or bent steel.
The electric single-girder bridge crane has higher working speed and productivity than manual ones, and its lifting capacity is also large. The electric single girder bridge crane is composed of a bridge frame, a cart running mechanism, an electric hoist and electrical equipment.
What is a gantry crane:
The horizontal bridge is a kind of bridge type crane which is arranged on the two legs to form the shape of the gantry. The cranes operate on ground tracks and are used for handling and installation operations in open storage yards, docks, power stations, ports and railway freight stations. The hoisting mechanism, trolley running mechanism and bridge structure of the gantry crane are basically the same as the bridge crane. Due to the large span, the crane operating mechanism mostly adopts separate driving methods to prevent the crane from running skew and increase the resistance and even accidents.
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