KOVAI ENG

KOVAI ENGINEERING WORKS (P) LTD.,
An ISO Certified Company

Automatic Laser Guided Land Leveler

KEW make Automatic Laser Guided Land Leveler is suitable to level the agricultural land accurately (Table-Top Leveling, Slope Setting any side) as according to our needs of cultivation. A significant (25 - 30%) amount of irrigation water is saved due to this type of farming and evenness of the field.

The unit consists of laser transmitter, laser receiver, survey receiver, control box, twin hydraulic control system, tripod & scale, remote and bucket scraper.

Working:

The laser transmitter transmits a rotating laser beam, which is used as the reference datum by the laser receiver mounted on the leveling bucket.

The control panel mounted on the tractor interprets the signal from the receiver and opens or closes the hydraulic control valve, which raises or lowers the bucket for making the required soil to be shifted from the high points of the field to the low points in the most cost effective way.

Field need to be ploughed and a topographic survey had to be undertaken before leveling commences.

Steps to follow:

» Plough the field. Use rotary tillers, disc harrows or cultivators as appropriate.
» Remove all the surface residues / roots etc., so as the aid soil flow from the bucket.
» Conduct a topographic survey to record the high and low spots in the field.
» From the surveyed readings establish the main height of the field by taking the sum of all the readings and dividing by the number of readings taken.
» Then using a field diagram and the main height of the field, determine a strategy to effectively move soil from the high to low areas.
» Position the laser-controlled bucket at a point that represents the main height of the field.
» Set the cutting blade slightly above ground level (1-2 cm).
» Drive the tractor in a circular direction from the high areas in the field.
» Laser leveler controller automatically raises or lower bucket scraper as required.
» However during initial leveling it may sometime be necessary to move away from circular path and turn the tractor towards lower area of the field, as soon as the bucket is near filled with soil.
» Similarly as soon as the bucket is near empty the tractor should be turned and driven back to the higher areas.
» When the whole field has been covered in this circular manner, the tractor and bucket should then do a final leveling pass in long runs from the high end of the field to the lower end.
» The field should then be re-surveyed to make sure that the desired level of precision has been attained.
» In wet areas where there is a poor traction or a chance of bogging the tractor, care needs to be taken to fill the wet areas in a circular motion.

Features:

» 25-30% saving of water. Saving of Water is equivalent to saving of Money.
» Cultivating area is increased due to no need to make bunds & channels for irrigation.
» Increases yield by 15 -20% due to even crop stands & full area of land usage.
» Energy is saved due to less requirement of water and tractor time for leveling.
» Improvement in nutrient use efficiencies.
» Weed Control, Labour Saving, Time Saving, Land Saving, Water Saving and Money Saving etc.,

Specification :

Power requirement

45 HP above Tractor

Controls & Specification :

	Transmitter ASL 800 DSD Laser wavelength 635 nm Laser class II/III Output range Diameter – 800 m Rotation speed 600 RPM to 1100 RPM Horizontal accuracy : ± 0.05 mm/m Grade Accuracy :± 0.3mm/m Grade range X axis : -10% ~ +10% Grade range Y axis : -10% ~ +10% Double axis : \|X\| + \|Y\| = 15% Leveling range : ± 5° Operating Temperature : -20°C to ~ +60°C Storage Temperature : -20°C to ~ +70°C IP : IP66, Size 220x200x280mm Weight 4Kg (without batteries)
	Transmitter ASL 800 DS Automatic Self Leveling Transmitter with Dual slope control with remote control with case. Laser Type : Infrared diode; 635 nm; Class 1; 5 mW max Self Leveling range : ± 5° Range : 800 m diameter Accuracy : ± 4.5 mm @ 100 m Slope Control : ± 6% Dual Axis setting: through Remote Control Operating Temperature : -20°C to ~ +60°C Storage Temperature : -20°C to ~ +70°C
	Remote Two Way Remote with display which help and displays slope.
	Remote For switching On / Off Laser Transmitter and for setting slope .
	Survey Receiver Rod Eye Reception : 180° Capture Height : 2” / 50 mm Body : Moulded Plastic Operating Temperature : -20°C to ~ +60°C Storage Temperature : -20°C to ~ +70°C Clamp Capacity : 70mm
	Mast Receiver (LR 360) 360° Laser Receiver with case & clamp for mounting Reception : 360° Capture Height : 8” / 203 mm, Coarse / Fine Accuracy Power Options : 10-24 VDC from Control Box Body : Shock Resistant, Polycarbonate / Die-cast Aluminium Operating Temperature : -20°C to ~ +60°C Storage Temperature : -20°C to ~ +70°C Clamp Capacity : 25 – 45 mm
	Control Panel Power Input : 12V/24VDC, 10 Amp. Max Power Output : 12V/24VDC, 10 Amp. Max, Coarse / Fine Selection Operating Temperature : -20°C to ~ +60°C Storage Temperature : -20°C to ~ +70°C Display : Day visible LEDs Charging circuit : for charging Battery
	Tripod and Scale Combo with carry case Open Tripod Height : 2650 mm Collapsed Tripod Length : 2000 mm Telescopic Scale : 4m Combo Weight : 7.5 kg
	Battery Pack for Transmitter 2 Nos. Rechargeable Lead acid UPS batteries and 1 battery case
	Battery Charger 12 VDC Charger from Control Box
	Power Mast Electric operated Power Mast, 12 VDC Power Supply from Control Box used for initial setting of Mast Receiver for auto operation of Laser Leveler.
	Power / Solenoid / Control Cables PVC multi core with Military grade screw couplers
	Hydraulic Control System Consisting of 12V Solenoid operated direction Control Valve, Pressure relief and Flow Control Valves & Hoses.
	Hydraulic Cylinder Double acting 2.2 ton Capacity @ 50 bar
	Drag / Box Scraper 2m WIDE, 0.6 Cu m CAPACITY Overall Dimension : L 3480mm x W 2185mm x H 2600-3400mm Transportation Unit : Axle with Pneumatic Wheels 4 Nos. (600 x 16.0 Tyre, Tube and Disc).

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