As the sales and usage season for rotary cultivators approaches, many farmers are looking to purchase and use these essential farming tools. Based on past issues and user experiences, there are four major hidden dangers associated with rotary cultivator products: first, inadequate safety protection; second, substandard blade hardness; third, poor overall quality; and fourth, non-compliant product labeling. To help farmers make informed choices and use their equipment safely, here are key points to consider when purchasing and operating a rotary cultivator.
**Purchase Tips:**
- **Reasonable Support:** Ensure the power consumption of the rotary cultivator is lower than the output power of the tractor it will be used with. The working width should match the tractor’s wheelbase to avoid any imbalance or stress on the tractor’s front and rear wheels.
- **Safety and Reliability:** The rotating parts must have sturdy safety guards. The machine should be stable when placed alone without external support. It should also feature clear warning signs and complete user manuals, including technical specs, safety instructions, assembly guides, maintenance tips, and troubleshooting advice.
- **Local Suitability:** The tillage depth should generally be at least 10 cm to meet local agricultural needs.
- **Good After-Sales Service:** Choose a reliable seller that offers maintenance and spare parts. Ensure the product comes with a valid “Three Guarantees†service card (repair, replacement, return) as required by agricultural machinery regulations.
- **Certified Products:** Prefer models that have obtained the Ministry of Agriculture’s agricultural machinery promotion permit and bear the corresponding certification.
**Usage Precautions:**
Rotary cultivators operate with high-speed rotating blades, so safety is crucial. Follow these guidelines:
- **Pre-Use Checks:** Inspect all components, especially the blades, bolts, and directional locks. If anything is loose or damaged, fix it before use.
- **Clutch Position:** Before starting the tractor, make sure the rotary cultivator clutch is disengaged.
- **Power Engagement:** Only engage power when the machine is raised and has reached the correct speed. Lower it slowly into the soil. Never start with the blades in contact with the ground.
- **Avoid Rapid Descent:** Do not lower the machine too quickly or reverse while it's in the soil. This can damage the blades and other parts.
- **Proper Speed and Handling:** When turning, keep the machine from being lifted too high. Limit the universal joint angle to 30 degrees and reduce engine speed if necessary. Always turn off and lock the machine when moving between fields.
- **Keep Safe Distance:** Never approach the rotating parts while the machine is running. No people or animals should be behind the cultivator to prevent injury from flying debris.
- **Maintenance Safety:** Always disconnect power before inspecting or replacing parts like blades. Turn off the tractor during any maintenance.
- **Control Speed:** First-time cultivation should be done at 2–3 km/h, and 5–7 km/h on previously tilled land. Avoid excessive speed to prevent overloading the PTO shaft.
- **Wheel Placement:** Drive the tractor on uncultivated land to avoid compacting the soil. Adjust the wheel spacing so it stays within the working range of the cultivator.
- **Clean Regularly:** Stop and remove grass or debris wrapped around the blades to avoid increasing the load on the machine.
- **No Passengers Allowed:** Never allow anyone to ride on the tractor or the cultivator while it's in operation.
**Maintenance Principles:**
The saying “prevention is better than cure†applies to rotary cultivators. Regular maintenance is essential for longevity and performance. Maintenance is divided into class-based and quarterly checks. After each use, check bolts, pins, and bearings, and lubricate as needed. At the end of the season, perform a full cleaning, replace oils, check blade wear, repair or replace damaged parts, and store the machine properly. If not in use, place the wheeled cultivator on level ground, not hanging from the tractor.
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