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| Illustration 1 | g01166666 |
Drag Conveyor and Auger Conveyor System
General Information
The material feed system transfers the mix from the hopper to the screed. Components which move the conveyors and augers make up the material feed system.
The material feed system contains an electrical portion, a hydraulic portion, and a mechanical portion. The electrical portion contains an ECM with associated input devices and output devices.
The hydraulic portion of the material feed system consists of the following:
- Two tandem hydraulic pumps which are of the variable displacement piston type
- A charge pump (gear type pump)
- Four hydraulic motors (single speed)
Each tandem hydraulic pump contains two rotating groups which are inside a single housing. The rotating groups that are inside one of the pumps provide flow to the right conveyor motor and the rotating groups provide flow to the left auger motor. The rotating groups that are inside the other pump provide flow to the left conveyor motor and the rotating groups provide flow to the right auger motor. A single charge pump provides charge oil to both material feed pumps.
The material feed system consists of a mechanical portion. The mechanical portion contains two driven drag conveyors and two chain driven augers.