Extractor counterweight device and arranging method thereof

The invention discloses an extractor counterweight device and an arranging method of the extractor counterweight device. Whole machine gravity center is determined through a weighing method and according to a moment equilibrium principle, so that the whole machine gravity center is located inside a turning bearing all the time, and a bolt arranged on the turning bearing is better in the stress effect. On the premise that any part is not detached and a bucket is empty, unilateral weighing is conducted on the extractor of different postures on a wagon balance, so that the ideal counterweight is obtained, the whole machine gravity center is located inside the turning bearing all the time, and the whole machine is better in stability.