Invention Grant
- Patent Title: Dragline bucket dump compensator
- Patent Title (中): 拖拉桶倾倒补偿器
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Application No.: US900351Application Date: 1997-07-25
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Publication No.: US5992061APublication Date: 1999-11-30
- Inventor: Robert S. Fleck , Charles G. Ollinger, IV
- Applicant: Robert S. Fleck , Charles G. Ollinger, IV
- Applicant Address: OR Portland
- Assignee: Esco Corporation
- Current Assignee: Esco Corporation
- Current Assignee Address: OR Portland
- Main IPC: E02F3/58
- IPC: E02F3/58
Abstract:
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.
Public/Granted literature
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