290HC Mast Sectioneach part of the tower crane will be introduced in detail.
according to the structural characteristics of each part of the tower crane, it is mainly composed of five parts, this article will separately make the detailed introduction to the tower crane each constituent. To learn more about the role and characteristics of accessories, please refer to the column: Tower Crane Accessories. 1. The metal structure and the Derrick working mechanism are composed of a lifting mechanism, a luffing (trolley traction) mechanism, a rotating mechanism and a running mechanism. In addition, the sauce-producing hip ten-tower machine has hydraulic lifting mechanism, walking tower machine has cart running mechanism. 2. Electrical System, derrick electrical system consists of electric power equipment, tower crane specifications and cable drum, electrical switch box, electrical control devices, protection devices, low-voltage appliances, auxiliary electrical equipment and other parts. 3. The working mechanism, the Derrick metal structure is composed of the base frame, the tower body, the tower cap, the slewing support, the top of the tower, the balance arm, the lifting arm, the cab, the ladder and the platform, the lifting sleeve and the cross beam. Exposed parts of the derrick structure, usually in-20 °c-40 °c environment work, and withstand rain, snow and other severe weather erosion. Therefore, in the design and selection of materials, welding must take into account the low-temperature Brittleness, corrosion resistance, ice expansion damage, to ensure that it has a reliable impact toughness.
290HC Mast Section
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4. The auxiliary device is composed of weight and weight, foundation and track, hauling device, attachment device, climbing frame, rope arrangement and rope dragging device, maintenance device and so on. Of these, the first four parts are required for Derrick. The weights, weights, rails, foundations, attachment rods, etc. in the attachment are arranged according to the type and purpose of the Derrick. 5. Safety devices, safety devices are essential to the Derrick, the utility model is composed of a lifting height limiter, a travel limiter, an amplitude limiter, an overload limiter, a stop and buffer, a steel wire rope escape prevention device, a wind speed meter, an emergency safety switch, a safety protection audio signal, an emergency alarm and a display and recording device.
