Specifications

It is intended for irrigation of greater agriculture areas.The irrigation ratio can be 99%.over 7 spans system is ecomacial.

agriculture machinery irrigation system lateral move

It is intended for irrigation of the greater agriculture areas.

The structure consists of a metal truss spans and overhangs, which based on moving towers with wheels, which are driven by central electric gear motors through cardan transmission gear wheel and on the wheels with tires 14.9×24 inches. Galvanized rims.

Electricity is produced by the included to machine power generator and transmitted by included to the machine electrical cables through the tower control boxes.

Machine structure is fully galvanized. Powerful and very stable, which provides machine job for many years.

The structure consists of two wings: the main and secondary. Main wing includes a main tower.

The main tower includes also:

l  Energy power unit comprising: horizontal centrifugal pump+diesel motor+alternator;

l  Main panel for machine operation electronic control;

l  Suction & Pressure kits, main water supply riser, other parts for filling the machine by water;

l  Elements of movement direction tracking;

l  Main tower light;

l  Flowmeter, water gauge.

Filling the machine by the water is done from canal (concrete ditch), rivers and pond. The machine operation without water is not allowed.

For the process of irrigation the machine makes reciprocating linear movement moving along the field driven by machine movement direction system.

When the machine comes to the end of the field due to the security system and in case when switch <stop> or <stop & reverse> function the machine is possible to irrigate in automatically by the control of operator.

For exact and careful irrigation on all length of structure on height 1.8-2.2m over the ground uniformly allocated circular continuous action sprinklers D12-16m. They are ideal for all kinds of crops, and as close in size to the natural drop of rain.

l  Fixed to the spans pipes on top with the help of “Gooseneck” and flexible hose by clamp.

l  Have an individual pressure-regulator on 1.5 bars, position stabilizer, jet nozzle and revolving from flow of water sprinkling “plate”.

The machine includes also system:

l  Move management,

l  A provision to straight linearities,

l  An ensuring the flow rate,

l  Against-emergency situation,

l  Stop/reverse system at the end of the field including barriers,

l  Dry track system equipped with sprinklers sector actions with pressure regulators and manual cocks.

Machine operation in time of irrigation process is realizes by the operator by means of a main panel electronic control system.

Valves for water draining at each span in case of low water pressure. At the end of each wing located devices for dirt gathering and end light.

The specification of the Rainfine Center Pivot
Items	Specification	Items	Specification
Pivot length	41.1-791.2m	Land covered	0.53-196.7ha
Qty.of spans	1-16	Span length choice	41.1/47.8/54.4/61.3m
Overhang length	6.7/13.4/20.1/26.8m	Pivot clearance	2.91-3.75m
Span dia.	141/168/203mm	Pivot height	4.62-5.46m
Span thickness	3mm	Surface	Hot dip galvanization
Flow rate	15-1080m3/hr	Water pressure at pivot base	1-7.5Bar
Friction Loss	0-2.5bar	Tire	14.9×24 tubeless tire with hot dip galvanized 8×24 rim irrigation special
Max speed	142m/hr	Sprinkler	Nelson/Senninger
Regulator	10/15psi	Type of drops	Flex 5.5-ft drops
Gear box	50:1 heavy duty	Gear motor	33rpm(full loaded) at 380V.3/4HP 40:1 Ratio. Over-heating protection
Control panel	Standard	Required run power	0.7-11.5kw
Power supply	415V 50HZ	Irrigation Hours/Day	0-24hr/day
Daily applicationrate	0-50mm/day	Pressure gage	0-60psi

Truss design is the most important parts on pivot parts on pivot irrigation system. The structural mechanics are precise calculated by computer and tested in tough road. It can stand 20 years long lasting work without any bending or breakings. The quality of the truss structure can’t be judged by eyes of the people but by the longer life of working field.

All welded steel parts are international standards and confirm to high performance and durability.

The high yield strength overhang cable is used in longer overhang. This design can help farmers to increase yield with less investment.

Truss rods are the key parts for holding the total weight of pivot like the bridge sling. The way of processing is very important because if the process is not correct, the truss rods would be broken when the pivots is working and cause the falling down of the complete machines.

We use high frequency electric heating system to heat the end of the steel rods and use head punching machine to punch both end of the steel rods.

When the rod being cut as the picture below, you can find that the steel rod and the headed part are exactly the same molecular.The quality standard is that this truss rod can stand 60,000psi yield strength.We use 22mm diameter rods instead of 19mm to make it stronger than American manufactures.

All the steel parts are galvanized by hot dip galvanized in the top leading galvanizing plant in China. The thickness is 2.0 – 2.5 mil, which is the USA galvanization standards of pivot manufactures ASTM A 123/123m-02.

We use automatically controlled welding Robot to do the welding for pipes to ensure the quality. The welding line is in perfect quality for the span pipe welded by Robot.

We introduce F drill technology from German and use it in our pipe drill processing system.

This technology can help the gooseneck to have a maximum connection to the pipe outlet holes and reduce the gooseneck damages during the sprinklers vibrating.

This hard but flexible joint design can support all the strength of the pivot and maximum the flexibility of the pivot joint in case that the pivot system can walk properly in waving land.

This aluminum coupler can be broken when the spans are not in proper alignment. This will case the water leak and the water pressure loses. The control panel will switch off the system when the water pressure is low and stop the machine. This is good design to protect the system being damaged when no people keep eyes on the machine.

The rubber boots inside the aluminum couplers can help to reduce the water friction and resistance and reduce the electric power consumptions.

Rainfine Heavy duty gearbox:

Special designed for Sudan market where the pivot can be used 300 days per year.

The gearbox we use:

    a  The worm consists of high strength forged steel with a Brinell hardness of 210 while the wrong gear is manufactured from ductile cast iron with a relatively wide variation of hardness. This is totally different from other manufactures who make it by grey pig iron.

    b  The worm and gear pressure angle have been designed at 14-1/2 degrees. This angle was selected based upon review of extensive engineering information and has been borne out by extensive testing and proven field result. The 4-1/2 degree pressure angle exceeds the necessary strength requirement while providing a greater efficiency than would be possible with large angle.

    c  The output shaft is a full 2-1/4” diameter shaft. Although  large shaft can be used, the actual strength is determined by the load applied and physical properties of the shaft material. The gearbox overhung load point is relatively small at 1-1/2” from the bearing to the wheel mounting flange. The shaft material is high-strength, forged steel.

    d  The worm end caps made from cast iron held by 4 bolts to reduce the possibility of working loose in the field – unlike system using a threaded nut design.

    e  Ratio: 50:1