Device for lifting, lowering and leveling booms of strip mining equipment
US5890304A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1996 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Oct 25, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A level boom is provided for a piece of strip mining equipment traveling on caterpillar-type chassis, which piece of equipment is temporarily moved on oblique roadways during operation. The position of the boom in relation to the skeletal structure is corrected with simple means. A piece of strip mining equipment with a boom, which can be lifted and lowered and at the free end of which, e.g., a bucket wheel for picking up a load is arranged, is connected to the substructure of the piece of equipment in a pivot axis. The lifting movement is brought about by a lifting cylinder. A tilting support, which carries the boom, is arranged in the pivot axis for lifting and lowering the boom. A bolt connection is provided on one side in the pivot axis for leveling between the tilting support and the boom, and the actuating element for leveling as well as a step bearing for absorbing lateral forces which the actuating element is unable to absorb, are located on the other side. Since the actuating element for lifting and lowering the boom is arranged in the pivot axis for leveling, no additional support elements are needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.