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意大利GRU-EDILMAC-E60.26型自升上旋式塔机臂长60m,最大起吊高度60m,两索提升能力2.6t。我局从1986年初至今在各工地连续使用了一年多的时间,认为其性能基本达到要求。起升及行走部分的电气传动是整体电气传动中最复杂、操作最频繁的部位,运行中最常用的两速接触器故障率较高,本文仅就这一部分的电气传动做一介绍。一、主要特点 1.起升电机采用双绕组2/4/16三极性三速马达以及2/4极双极性双速马达(也有采用单速双极马达的)来进行吊钩的升降变速,与采用线绕式转子串电阻调速相比较,
Italy GRU-EDILMAC-E60.26 self-elevating rotary tower crane arm length 60m, the maximum lifting height of 60m, two cable lift capacity of 2.6t. From the beginning of 1986 till now, our bureau has been using the site continuously for more than a year and considered its performance basically met the requirements. The electric drive of hoisting and walking part is the most complicated and most frequent part of the whole electric drive. The most common two-speed contactor in operation has a high failure rate. This article only introduces the electric drive in this part. First, the main features 1. Hoisting motor using double-winded 2/4/16 tri-polar three-speed motor and 2/4 pole bipolar two-speed motor (also used single-speed bipolar motor) to lift the hook Variable speed, compared with the use of wire wound rotor resistor string speed control,