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水平臂架的塔机如能减少自身重量相对可增大起重能力。本文提出改进原加工工艺，并推荐新的工装，采用变截面水平臂架，可说是一种新的尝试。
Horizontal jib tower crane if it can reduce the relative weight of their own lifting capacity. This paper proposes to improve the original processing technology, and recommend new tooling, the use of variable cross-section boom, can be said to be a new attempt.