Electric drilling and bolting device
US11078790B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2017 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Oct 9, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/027
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drilling and bolting device for driving a drill element into a rock surface includes a frame, a drive unit supported for movement relative to the frame, and an actuator for moving the drive unit relative to the frame. The drive unit includes a motor and a chuck for engaging the drill element. The chuck is driven by the motor. In some aspects, the actuator includes a magnet exerting a magnetic force on the block to provide magnetic coupling between the actuator and a block supporting the motor. In some aspects, the actuator is positioned at least partially within an elongated member of the frame. In some aspects, the drive unit includes a switched reluctance motor including a stator and a rotor supported for rotation relative to the stator, and the rotor is directly coupled to the chuck.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.