近来,国外制造了大量起重力距为1—10吨米,供低层建筑用的轻型轮胎塔式起重机(见附表)。这些起重机的行走机架采用了型钢和钢板焊接成十字形或矩形的平面机架(见图1.a、б),有时在机架中注入混凝土,起中央平衡重的作用,用以增加起重机的稳定性和提高行走机架的强度。 Recently, a large number of light-duty tire tower cranes have been manufactured abroad for low-rise buildings with a gravity distance of 1-10 tons (see attached table). The crane’s walking frame uses a plane frame (see Figure 1.a, b) welded with steel and steel plate into a cross or rectangular shape. Sometimes the concrete is injected into the frame to act as a central counterweight to increase the crane. Stability and increased walking rack strength.