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It is reported that the tower crane has completed the design of the pattern, the overall design calculation, the calculation of the main load-bearing steel structure, the tooling design, and the process estimation, and the preparation work before the trial production is underway.
Recently, in order to adapt to the market and meet the needs of different customers, the technical engineering department of Beijing Construction Engineering Machinery Factory has developed a new tower crane QTZl60 after more than three months of technical research. The tower crane has a boom arm length of 60 meters, an arm tip weight of 2 tons, and a rated lifting torque of 160 tons. The hoisting mechanism adopts the two-speed winding motor under the PLC programmable controller, which has higher control precision and stronger reliability than the original tower RCS mechanism; the slewing mechanism uses the torque motor, compared with the original tower series electromagnetic coupling The design has a low failure rate: the car uses frequency conversion technology to make the operation more stable. Its biggest advantage is that the working coverage is increased to meet the needs of mid-rise construction.