Micro tillers are an important force for spring and autumn planting among farmers. They have become a new favorite for farmers due to their lightweight, flexibility, versatility, and low price. However, micro tiller operators generally report a high failure rate of micro tillers, and many farmers do not know how to choose. In fact, the high failure rate of micro tillers is caused by improper use and maintenance. Just pay attention to it in daily life. Below is an analysis of the advantages and disadvantages of two models for your reference and selection.
Direct drive micro tiller
The general structure is that the engine is directly connected to the gearbox through a flange, and power is directly transmitted to the gearbox through a wet friction clutch or a conical friction clutch. The gearbox and the walking gearbox are integrated, and there are three types of shafts in the gearbox: the main shaft, the secondary shaft, and the reverse shaft. By shifting the position of the dual spur gears on the main shaft and reverse shaft, fast, slow, and reverse gears can be achieved, and then power output can be achieved by reversing and decelerating through two sets of bevel gears.
1、 Advantages of the model
1. Compact structure.
2. The speed parameters for fast, slow, and reverse gears are relatively reasonable.
3. Generally, F178 and F186 air-cooled diesel engines are used as power sources, and the power itself has good reliability.
4. The overall weight of the machine is moderate, generally around 100Kg, and it has good farming effects, high operational efficiency, and a wide range of applications.
5. This model is currently the most popular and best-selling model in the market, widely accepted by users. If it enters the market, it can save a lot of promotion and publicity costs.
6. This model has significant advantages in operating in hard terrain, large fields, shallow water fields, and water soaked fields.
2、 Insufficient models
1. If powered by a general-purpose gasoline engine, the power is prone to damage. If powered by a water-cooled diesel engine, the overall weight of the machine is heavy and transportation is difficult. Therefore, it is generally best to choose F178 and F186 air-cooled diesel engines as power matching options for this type of model.
2. The secondary shaft and reverse shaft in the gearbox are both cantilever beam structures with poor rigidity, and the gears are prone to damage due to uneven stress.
3. Due to the use of two sets of straight bevel gears for reversing, deceleration, and the use of tapered bearings to overcome the axial force of the bevel gears, the manufacturing cost of the chassis part is relatively high.
Belt driven micro tiller
The engine power is transmitted to the gearbox through a belt, and the clutch of the power is achieved by tensioning the belt. The gearbox is mostly an integral structure, with the upper part being the transmission part and the lower part being the power output part. Chain transmission is generally used between the power output shaft and the transmission part.
1、 Advantages of the model
1. It is generally powered by a general-purpose gasoline engine or a small water-cooled diesel engine, with a light weight and convenient transportation.
2. Low manufacturing cost.
3. Due to the use of belt transmission, it can reduce the impact force on the power mechanism and provide certain protection for the engine.
4. This model has significant advantages in operating in areas such as greenhouses, loose dry land, deep paddy fields, and small fields, and is also one of the most popular best-selling models in the market.
2、 Insufficient models
1. If powered by a universal gasoline engine, there are shortcomings such as high fuel consumption, low revenue, and poor reliability of the power itself. Therefore, most manufacturers choose to use a 6-horsepower small water-cooled diesel engine as the power source, except for export.
2. Due to the use of belt tension clutch, the belt keeps folding and tightening, and the continuous heating of the belt is prone to aging and fracture.
3. The maximum output speed of this type of aircraft is generally around 150-180 revolutions per minute. Due to the higher output speed, the output torque decreases, and it is easy to exceed the maximum output torque of the engine during use. Therefore, during operation, there are often phenomena such as engine stalling or rapid decrease in engine output speed, which can cause significant damage to the engine. Especially, many manufacturers arbitrarily widen the plowing range, increase the tool diameter, and increase the output speed, resulting in frequent power failures. The sales of micro tillers powered by general gasoline engines in the market have seriously declined.
4. Due to the use of chain transmission at the output end, the chain is prone to elongation and breakage.
5. Due to the relatively light weight of these models, which is generally around 45-70kg, the effect of hard and flat soil penetration is poor, making cultivation difficult.
Price and cost-effectiveness analysis
There are mainly two models of cultivators produced and sold in China: one is powered by an air-cooled gasoline engine or water-cooled diesel engine, with a belt or chain gearbox as the transmission device, and equipped with rotary tillage tools with a cultivation width of 500-1200mm. The price is generally between 300-500 US dollars, with good economic performance, but limited multi-purpose expansion ability, and a relatively simple structure, suitable for use in areas with poor economic conditions and relatively simple uses.
The other model is powered by an air-cooled diesel engine or a high horsepower air-cooled gasoline engine, with a full shaft full gear gearbox as the transmission device, and is equipped with rotary tillage tools with a cultivation width of 800-1350mm. The price is generally between 600 and 1000 yuan. The whole machine adopts gear transmission, with no damage to power, wide cultivation width, deep cultivation, strong adaptability, and can adapt to various soil types. The components have good rigidity and long service life.
Post time: Feb-27-2024