Center Pivot Irrigation

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Product Overview

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The center pivot sprinkler system, also known as the pointer-type sprinkler or electric circular sprinkler, consists of a central tower, a span section (including a sprinkler truss and tower frame), a cantilever arm, and an optional end gun system. The central tower is fixed on a central base, and during operation, the spans rotate around the central tower, irrigating a circular or fan-shaped area. Depending on the size of the irrigated land, the span section of the center pivot sprinkler can be configured as a single span or a combination of multiple spans. Different span sizes, in conjunction with the cantilever pipe, allow for the assembly of machines of various lengths. Each machine can control an area of 8 to 100 hectares, meeting the irrigation needs of different plot sizes. Sprinkler heads can be configured according to local climate conditions and crop requirements, with irrigation intensities ranging from 4mm to 50mm.

Equipment Dimensions
	Span Dimensions	Supervisor Specifications	Span length	A	B	C	D	E
		Φ168mm	41.1m	3.91m	41.47m	2.95m	4.52m	41.15m
		Φ168mm	47.8m	3.91m	48.18m	3.02m	4.52m	47.88m
		Φ168mm	54.5m	3.91m	54.91m	2.90m	4.60m	54.53m
		Φ168mm	61.3m	3.91m	61.64m	2.97m	4.62m	61.34m
		Φ219mm	41.1m	3.91m	41.47m	2.92m	4.54m	41.15m
		Φ219mm	47.8m	3.91m	48.18m	3.00m	4.55m	47.88m
		Φ219mm	54.5m	3.91m	54.91m	2.90m	4.63m	54.53m
	Cantilever dimensions	Supervisor Specifications	Cantilever length	F	G	H	Note: 1. All values are based on operations without water. 2. In water-involved operations, the above values may vary due to terrain and tire sinking.
		Φ141mm	6.7m	7.62m	5.33m	3.48m
		Φ141mm	13.4m	14.32m	5.33m	3.48m
		Φ141mm	20.1m	21.02m	6.70m	3.48m
		Φ141mm	26.8m	27.74m	6.70m	3.48m

Product Features

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1.Long Service Life: The main structure has a service life of over 20 years, providing benefits from a single investment for many years.

2.High Structural Strength: The materials used for the span are solid (see technical parameters for details), and the structural design is reasonable with strong overall rigidity.

3. Corrosion Resistance: All steel components are treated with a hot-dip galvanizing process, with a galvanizing layer thickness of 0.08 mm.

4. Uniform Watering: Standard with NELSON R3000 nozzles, other nozzles can be selected based on planting needs, achieving a watering uniformity of over 95%.

5. Simple and Convenient Structure: The central pivot irrigation system has a straightforward structure, is easy to operate and maintain, and has a high degree of automation with no manual intervention required during operation; one person can control the irrigation of up to 15 machines.

6. High Degree of Intensification: Low investment cost per unit area, no need for land leveling, can handle slopes up to 25%.

7. Wide Applicability: Suitable for irrigation of all crops in open-field cultivation, can be used on sandy, loamy, and clay soils, and is applicable in both plain and hilly areas.

Technical Specifications

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Span structure	1.Pipeline	Main Pipe Diameter ø219 (±2 mm), ø168 (±2 mm), Wall Thickness 3 mm, Length 6.706 m
	2.Truss Support	The central tower angle steel is 100×100×10 mm; the tower frame angle steel is 100×80×8 mm, with 4 vertical members and double "V" shape truss bracing; all truss angle steel is 5×5×4 mm or above; tower leg diagonal bracing is 75×75×6 mm.

	3.Truss bracing	Use 45# high-strength round steel with a diameter of 20mm or more, hot forged in one go to avoid cracking.

	4.Fastener	Key components of the equipment use GB standard Grade 10.9 high-strength alloy bolts for fastening, while bolts for secondary components are all GB standard Grade 8.8 high-strength bolts. All nuts are metal self-locking nuts.

	5.Cross connection	The connections between spans use external A38 aluminum protective covers, which are equipped with internal rubber waterproof gaskets. This design is not only aesthetically pleasing but also provides dual protection

Walking Mechanism	1.Power Requirements	380 Volts, 50Hz (for diesel generators or industrial and agricultural use)
	2.Cable	716 AWG + 412 AWG, aluminum sheath, UV-resistant
	3.Motor cable	4*14 AWG, aluminum sheath, UV-resistant
	4.Motor reducer	0.75HP，40：1//1.5HP，40：1
	5.Wheel reducer	50:1
	6.Tire	14.9–24, low-speed, irrigation-specific
	7.Sprinkler spacing	2.23m
Control system	control cabinet	1. Displays operating status, monitors in real time, and provides fault alarms throughout the entire process.
		2.Features automatic shutdown and reverse rotation functions, enabling sector irrigation (optional).
		3.Adjustable walking speed for the tail span of the sprinkler.
		4.The enclosure has dual dustproof and waterproof functions.
		5. A lightning protection device can be installed as needed.
		6. The linkage function between the sprinkler system and the water pump can be implemented as needed.
		7.The cumulative timer can display the operating time of the sprinkler system.
	Tower box	1.The three types of tower boxes together form the control system for the span. The time relay in the terminal tower box can automatically cut off power to stop the machine, preventing accidents caused by tire slippage or obstacles in the tail span or other spans.

		2.Omron safety switch (micro switch): has a lifespan of over 5 million operations.
		3.The isolating switch and contactor have a minimum heating current of 16 amps under a rated voltage of 600V.

Product Detail