SPRING 750/35 - ONIONS HARVESTER
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Spring 750/35 - Onions Harvester
System to harvest the onions already dig and placed in a central row.
The wide areas for selection (9,2 total sq) and the bunker capacity make this model suitable to harvest from 1 up to 2 ha a day.
Strong construction and supporting trapezium-shaped frame with low barycentre: hydraulic transmission independent from the tractor equipped with a pump flange-mounted on the pto; hydraulic movement of the shaft and steering tyres; two control boxes placed inside the tractor cab: one to manage all the operation during the harvest and the other one to control the download operations of the bunker with moving floor; 5 adjusting hydraulic valves give the operators the opportunity to rationally and efficiently control the rounds/minute of all the belts; two very wide platforms can accept up to 8 operators.
With this model carlotti company increased the productivity, keeping the full respect of the products. This model maintains all the characteristics of the Spring series, it is not aggressive to the soil and least of all with the potatoes.
The selecting and sorting areas have been widened and each station is separated, having a total autonomy on the belts speed.
Products are moved up from the harvesting belt to the hedgehog belt, where two rotating rollers (running to opposite sides) gently lift the products to the selecting belt, while soil in excess runs under the rollers and is eliminated. Some soil together with under size products goes up to the waste belt, where the operators proceed with a further selection.

Same characteristics as Spring 750/35 for potatoes.

Model ONION HARVESTER SPRING 750/35
Dimensions - Length: mt. 8,33
- Width: mt. 2,86
- Height: mt. 2,89
- Weight: kg. 4400
- Required power: HP 80
Transmission Hydraulic/electric with pump directly connected  the tractor PTO.
Connection  Towed-hydraulic shaft for placing it outside the row.
Digging device -Made of: No. 2 rods with levelling stirrups; No. 1 reel with three rubber paddles driven by hydraulic motor with valve to control the rotary speed.
Belts - Harvesting belt with straight and bent rods alternate, Width=mm. 740.
- Leaves detaching belt with 4 small belts, Width=mm.740.
- Rear cross hedgehog belt, Width=mm.700.
- Selection belt, Width=mm.690 + waste belt Width=mm.350, with finger bars at each mm.192.
- Swan neck belt Width=mm 690.
Speed of belt Independent by means of flux regulators and electro-valves groups.
Leaves separating devices - Leaves detaching belt placed on top of the harvesting belt.
- Rubber plates placed on top of the leaves detaching belt.
Soil separating device - Rubber shakers connected to the harvesting belt
- Hedgehog belt.
- Double rotary roller placed on top of the hedgehog belt.
- No. 4 groups of selecting disks, placed on top of the selection belt.
Axles Steering, hydraulic.
Products downloading In the hydraulic hopper (capacity 3,5 tons) with moving downloading belt, totally coated. Hydraulic speed, transmission and downloading height.
Maximum downloading height=mt. 3,8
No. of operators 2/3 + 1 tractor driver (max 8 persons + 1 tractor driver).
Production capacity 2/3 ha per day (8 working hours).
Safety systems Main control box for tractor driver, complete with: emergency stop, horn, control levers for belts speed and inclination. Flux regulators placed at the selection belt.
Micro-switches for swan neck movement, rise of the hopper and download operations.
Other available devices - Potatoes diging-harvesting system.
- Frame and curtain for shadow.
- Lights for street.
- Hydraulic belt for collecting under-size products.
- Big bags device with hooks.