[0001] The invention refers to a discharge winnowing device for concrete automixers, to
be brought from the transport position to the settling one as a prosecution of the
discharging channel of the fixed part on the means by operating by manual traction
only with side rotating travel. ,
[0002] The solidarily operating condition between the parts can be obtained by means of
a quick engaging part. When the contrivance is disactivated, the divece can be brought
again in transport position, which permits the shape return, by acting in the inversed
sense by bearing it, up to the travel limit, to lay on a support held by the relevant
splash board. For discharging the auto-mixers, at present, an additional duct lenght
is foreseen articulated with a discharging channel fitted on a plane, to be brought
by hand in lowering position. The mobility of this part is required to bring the product
on the discharging point: on the floor, into formwork shuttering or anything else,
and in a non-employ phase the return in shape for transport.
[0003] The employ of the mobile part requires a manual alternate movement on a vertical
plane; when lowering to get settling and when rising to return to shape, it turns
out to be particularly wearing and dangerous. For a sudden overturning or any movement
whatever which should unbalance the catch settling, this part falls like a scissor
motion on the operator. The invention enables to solve the problems by means of the
connection of the initial articulated part to the plane frame of the winnowing device
on rotating knuckle with side setting, to permit the movement in only one sidewise
trip. This avoids the effort for supporting the part and, consequently, the dangerousness
of the motion.
[0004] From the transport position, where the end part of the winnowing contrivance lies
on the support held by the relevant splash board, the winnowing part is brought by
rotation with side trip into employ position, and the duct assembly is made solidarily
operating by means of a quick engaging device. For transport the bound is disactivated
and the device is brought again on the splash board support by a side trip in the
inverted sense.
[0005] A not limiting execution version is illustrated by the drawings of Tables 1 and 2,
where Fig. 1 is the side view of the duct assembly in employ position and showing
its supporting contrivance enabling its rotation as well as the inclination variability.
Fig. 2 is the side view of the only duct of the winnowing device. Fig. 3 is the schematic
view in correspondence of the two conduit components. Fig. 4 is the view of the duct
assembly in employ condition. Fig. 5 is the view of the same assembly with unbound
components and showing the discharging opening for the pro duct. Fig. 6 is the view
of the conduit component assembly. The esecution form foresees the initial duct'with'converse
1 into which hopper 2 discharges the product: this part is stabilized on the frame
with the concrete mixer. Duct 1 is supported with rotating knuckle which allows the
variability of the discharging point on an arc beyond 180°, on two arms lying on a
vertical plane; each arm is articulated on one of the ends of the vertical pin 3 in
coaxial seat on the vertex of bracket 4 with isosceles sides and integral with the
frame. Pivots 3 bears on its top crown 5 integral with a corresponding part 6 to operate
altogether as a rotation plane of arm 7 supporting duct 1 on knuckle 8.Below, pin
3 is articulated in 9 to arm 10 that can be extended to lifting jack 10 supporting,
on the other point, duct 1 in knuckle 11.
[0006] By adjusting the duct assembly inclination, the height of the discharging opening
can be changed according to the different requirements, such as: discharging on the
floor, into formwork shut terings or else. The winnowing device 12 is supported on
a side rotating knuckle 13 on the discharging opening 14 of duct 1, and above channel
15 is foreseen which, in employ condition is set as a longitudinal prosecution for
the duct. From the transport position, in which the lower end of 12 lies on arched
support 16 held by splash board 17 which retains it, it is possible to bring opening
20 of the device on opening 14 by traction only on handles 18 e 19 in side trip and
to compose thus the canalization. To make the conduit components integral, hook with
quick engagement is applied. Duct 15 brings the products on winnowing net 21 which
keeps back the exceedingly large grains, permitting the pro duct discharge into the
lower duct 22 from which it falls through opening 23. The winnowing device is equipped
with net 21 supported on the four frame top points by elastic shock absorbers 24 that
transmit the vibration effect of the vibrating assembly 25. This permits to increase
the discharging speed. The material kept back, scrap of the discharge product, is
discharged by opening door 27 on hinge 26 fitted on the top, by acting on tension
rod 28.
[0007] The devices are singularly variable and, if necessary, alternatively fitted on the
two components.
1) Discharging assembly for concrete auto-mixer with side rotating shift winnowing
device, characterized by the fact that a starting unloading duct is foreseen supported
on two arms lying on a vertical plane and sustained in rotating articulation, one
of which arms can be extended to allow different unloading point and height. On the
opening side part, this holds a selecting device to let it reach a non-employ position,
by hand traction only, on a support of the relevant mud-guard and, with an inverted
movement, to bring it as a prosecution of the beginning duct stabilizing its settling
by means of quick insertion hook. In comparison with the present unloading ducts,
which can be settled by lowering, the invented system permits to avoid the risks arising
from a possible scissor-like fall of the part, to limit the physical effort and to
increase the discharging speed.
2) Discharging assembly for concrete auto-mixer with side rotating shift winnowing
device, according to the previous claim, characterized by the fact that foresees the
initial duct with converse 1 into which hopper 2 discharges the-product: this part
is stabilized on the frame with the concrete mixer. Duct 1 is supported with rotating
knuckle which allows the variability of the discharging point on an arc beyond 180°,
on two arms lying on a vertical plane; each arm is articulated on one of the ends
of the vertical pin 3 in coaxial seat on the vertex of bracket 4 with isosceles sides
and integral with the frame. Pivot 3 bears on its top crown 5 integral with a corresponding
part 6 to operate altogether as rotation plane of arm"7 supporting duct 1 on knuckle
8. Below, pin 3 is articulated in 9 to arm 10 that can be extended to lifting jack
10 supporting, on the other point, duct 1 in knuckle 11. By adjusting the duct assembly
inclination, the height of the discharging opening can be changed according to the
different requirements, such as: discharging on the floor, into formwork shutte- ringsor
else.
3) Discharging assembly for concrete auto-mixer with side rotating shift winnowing
device, according to the previous claims, characterized by the fact that the winnowing
device 12 is supported on a side rotating knuckle 13 on the discharging opening 14
of duct 1, and above channel 15 is foreseen which, in employ condition is set as a
longitudinal prosecution for the duct. From the transport position, in which the lower
end of 12 lies on arched support 16 held by splash board 17 which retains it, it is
possible to bring opening 20 of the device on opening 14 by traction only on handles
18 and 19 in side trip and to compose thus the canalization: To make the conduit components
integral, hook with quick engagement is applied.
4) Discharging assembly for concrete auto-mixer with side rotating shift winnowing
device, according to the previous claims, characterized by the fact that duct 15 brings
the products on winnowing net 21 which keeps back the exceedingly large grains, permitting
the product discharge into the lower duct 22 from which it falls through opening 23.
The winnowing device is equipped with net 21 supported on the four frame top points
by elastic shock absorbers 24 that transmit the vibration effect of the vibrating assembly 25. This permits to
increase the discharging speed. The material kept back, scrap of the discharge product,
is discharged by opening door 27 on hinge 26 fitted on the top, by acting on tension
rod 28.
