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Bridge cranes are widely used in indoor and outdoor warehouses, factories, docks and open storage yards. Bridge cranes can be divided into ordinary bridge cranes, simple girder bridge cranes and metallurgical bridge cranes.
Ordinary bridge cranes generally consist of lifting trolleys, bridge operating mechanisms, and bridge metal structures. The lifting trolley is composed of a lifting mechanism, a trolley running mechanism and a trolley frame. Hoisting mechanisms include electric motors, brakes, retarders, reels, and pulley blocks. The motor drives the drum through the reducer to rotate the rope around the drum or down from the drum to lift the weight. A small frame is a frame that holds and installs components such as a lifting mechanism and a trolley running mechanism, and is usually a welded structure.
The driving mechanism of the crane operating mechanism can be divided into two categories: one is centralized driving, that is, one motor is used to drive the long drive shaft to drive the active wheels on both sides; the other is to drive the two wheels respectively. Motor drive. In medium and small bridge cranes, the three-in-one drive mode in which the brake, reducer and electric motor are combined into one body is widely used. In order to facilitate the installation and adjustment of large-capacity common bridge cranes, the drive unit often uses a universal joint. .
The crane operating mechanism generally uses only four active and driven wheels. If the lifting weight is large, the method of adding wheels is commonly used to reduce the wheel pressure. When the number of wheels exceeds four, a hinged and equalized frame device must be used so that the load of the crane is evenly distributed on each wheel.
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A bridge crane is a kind of bridge type crane, also known as a crane, which runs on an elevated track. The bridge crane's bridge runs longitudinally along the rails laid on both sides of the elevated road, and the lifting trolley runs transversely along the track laid on the bridge, forming a rectangular working area, and can fully utilize the space under the bridge to lift the materials. Obstructed by ground equipment.