发明授权
- 专利标题: Dragline bucket dump compensator
- 专利标题(中): 拖拉桶倾倒补偿器
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申请号: US900351申请日: 1997-07-25
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公开(公告)号: US5992061A公开(公告)日: 1999-11-30
- 发明人: Robert S. Fleck , Charles G. Ollinger, IV
- 申请人: Robert S. Fleck , Charles G. Ollinger, IV
- 申请人地址: OR Portland
- 专利权人: Esco Corporation
- 当前专利权人: Esco Corporation
- 当前专利权人地址: OR Portland
- 主分类号: E02F3/58
- IPC分类号: E02F3/58
摘要:
A hoisting assembly for use with a dragline bucket that includes a compensator for generally stabilizing the attitude of the bucket. The compensator is operably coupled to the lift, hoist and dump lines. The connector for the lift line(s) defines a fulcrum about which the compensator turns during use. As the tension in the dump line increases relative to the tension of the hoist lines, the compensator turns about the fulcrum to lift the hoist lines and shift the sheave supporting the dump line forward. As the tension in the dump line decreases relative to the tension of the hoist lines, the compensator turns about the fulcrum in the opposite direction to lower the lift lines and shift the sheave supporting the dump line rearward.
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