Silo unloader leveling apparatus
US4329105A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1979 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | Apr 30, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01F25/2009
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A top unloading silo unloader pendantly supported in a tower silo. The unloader has a material collector moved around the silo with drive structure. An impeller receives material from the collector and throws the material into an out chute which directs the material to a doorway leading to an upright passageway. The drive structure mounted on the outer end of the collector has leading and trailing drive wheels connected with movable mounts to a leveling apparatus. Power is applied to both wheels by separate drive shafts connected to the power transmission for the augers of the collector. The leveling apparatus has a base secured to the collector. Supports pivotally mounted on opposite ends of the base are attached to the mounts for the wheels. A linear actuator connected to the supports operates to concurrently pivot the supports in opposite directions so that the outer end of the collector can be raised or lowered and held in a selected position. A lost motion connector attaches the linear actuator to one support to allow the linear actuator to have limited contraction without raising the drive wheels. The linear actuator has a reversible electric motor coupled to a motor controll…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.