Asphalt Spreading System (Feed)
MATERIAL FEED SYSTEM
The feed system is arranged to give the operator
good control of material movement and distribution.
From his seat almost directly over the spread-screws,
the operator has an unobstructed view of material
distribution ahead of the screed.
Electric Clutches - R.H. Walkway Removed
Material Flow Diagram
The two hinged hopper wings which can be raised and
lowered hydraulically to permit complete emptying of
the large hopper should be operated after each supply
truck has pulled away and cleared the hopper area.
They should never be raised when a truck is at the
Electric Clutches - L.H. Walkway Removed
paver. (See Figure 2)
The hydraulic cylinders which raise each of the
hopper wings are powered from the same hydraulic
pressure line and one will normally preceed the other
in reaching the fully raised and fully lowered attitude.
The two slat conveyors and the two screw conveyors
which combine functions to move asphalt from the
hopper to the area ahead of the trailing screed, are
operated by means of two electromagnetic clutches.
Each clutch starts or stops the movement of one side of
the feed system (Right hand or Left hand). By chain and
sprocket connection, one slat conveyor and one screw
conveyor operate simultaneously to feed one side.
(See Figures 3 and 4) Each clutch is operated by
means of a toggle switch on the operator's console, or
by an auxiliary switch on the paver deck beneath the
(The auxiliary switch is for the
convenience of the screed man when he chooses to
control the feed manually for some special
Complete information on the care and adjustment of
Tilting Hopper Wings
electric clutches is contained in the Mechanical
Maintenance Section 11)