Mechanical knowledge base: "tillage machine"

The tiller is powered by a small diesel engine or a gasoline engine. It features light weight, small size and simple structure. Tillers are widely used in the drylands, paddy fields, orchards in the plains, mountains and hills. Equipped with the corresponding equipment can be pumping, power generation, spraying, spraying and other operations, but also towing trailers for short-distance transport, the tiller can be freely exercised in the field, user-friendly use and storage, eliminating the need for large agricultural machinery can not enter The worries of the plots in the mountains are the best choice for farmers to replace the cattle.

Style

Currently, there are two types of micro tilling machines currently produced and sold in the country: one is powered by an air-cooled gasoline engine or a water-cooled diesel engine, and a belt or chain gear box is used as the transmission device, and the rotation is 500-1200mm. Tillage tools, the price is generally between 2000-3500 yuan, the economy is better, but the multi-purpose expansion capacity is limited, the structure is relatively simple, suitable for the economic conditions are poor, use a more simple area. Manufacturers are mainly concentrated in Shandong, Chongqing, Hunan, Hebei, Hubei, Sichuan and other places.

The other is powered by an air-cooled diesel engine or a high-powered air-cooled gasoline engine. The all-axle full-gear box acts as a transmission and is equipped with a rotary tillage tool with a tillage width of 800-1350mm. The price is generally between 4500-6000 yuan. The whole machine adopts the gear transmission, the power is not damaged, the width of ploughing is wide, the depth of cultivation is deep, the adaptability is strong, all kinds of soil quality can adapt, the parts have good steel properties and long service life. The gear box body is made of ductile cast iron and the blanks are machined to have higher strength and longer service life. Clutch type clutch is adopted as the clutch type, which can easily realize shifting, reverse gear and other functions. This type of machine has a higher price, but it has outstanding expansion capabilities. It can be equipped with corresponding agricultural implements to complete rotary ploughing, ploughing, sowing, threshing, pumping, spraying, power generation, and transportation. It can realize true multi-functional and multi-purpose use. Manufacturers are mainly concentrated in Chongqing, Hubei, Yunnan, Sichuan and other places.

Model selection

1, straight transmission model

Its general structure is: the engine and the transmission are directly connected through the flange, and the power is directly transmitted to the gearbox through the wet friction clutch or the friction clutch on the cone surface. The transmission and the walking box are all integrated, and the transmission has a spindle. Auxiliary shaft, reverse shaft, three kinds of shafts. By shifting the positions of double spur gears on the main shaft and reverse shaft, the fast gear, slow gear and reverse gear can be realized, and then the gears can be reversed and decelerated through two groups of straight bevel gears. Output power.

Model advantages

1. The structure is compact; 2. The parameters of fast, slow and reverse speeds are relatively reasonable; 3. The F178 and F186 air-cooled diesel engines are generally used as power, and the power itself has better reliability; 4. The weight of the whole machine is generally 100Kg. At the same time, the farming effect is good, the operation efficiency is high, and the scope of application is wide; 5. The model is the most popular best-selling model on the market and it is accepted by the general users. If it enters the market, it can save a lot of promotion and publicity expenses. 6 This model has great advantages in hard ground, large fields, shallow fields, and water fields.

Insufficient models

1. If a general gasoline engine is used as a power source, the power is easily damaged. If a water-cooled diesel engine is used as a power source, the weight of the entire engine is heavy and the transportation is difficult. Therefore, this type of model is generally better equipped with F178 and F186 air-cooled diesel engines for power comparison. 2. The two types of shafts in the gearbox, including the auxiliary shaft and the reverse shaft, are cantilever structures. The rigidity is poor and the gears are unevenly damaged. 3. The two sets of straight bevel gears are used to reverse, decelerate and use the taper. Bearings overcome the axial component of the bevel gears, so the chassis part is expensive to manufacture.

2, belt drive type

The engine power is transmitted to the transmission through the belt, and the clutch is used to realize the power clutch; the transmission body is mostly of an integral structure, and the transmission part is a transmission part, and the power output part and the power output shaft part and the transmission part are underneath. Chain transmission is generally used.

Model advantages

1. Generally, it is powered by a general gasoline engine or a small water-cooled diesel engine. The weight of the whole machine is light, and the transfer is convenient. 2. The manufacturing cost is low. 3. Because the belt transmission is adopted, the impact on the power mechanism can be reduced, and the engine has a certain degree of impact. The protection function; 4 the model in the greenhouse, loose dry land, deep-water fields, small fields and other fields have a greater advantage, is also one of the most popular best-selling models on the market.

Insufficient models

1. If a general gasoline engine is used as a power source, there are disadvantages such as high fuel consumption, low yield, and poor reliability of the power itself. Therefore, most manufacturers generally choose to use a 6-horsepower small-sized water-cooled diesel engine as a power source. Tightening the clutch, the belt has been rewinded and tensioned, and the belt is prone to heat aging and will be broken; 3, the maximum output speed of this type of model is generally about 150 rev / min -180 rev / min, due to the higher output speed, the output torque changes Small, in the process of use, it is easy to exceed the maximum output torque of the engine, so often when the engine is running out of flame or the engine output speed rapid decline and other phenomena, the engine damage is greater; especially in recent years, many manufacturers are willing to widen the plough width Increased tool diameter, increased output speed, resulting in frequent power failures. Sales of micro tillers powered by common gasoline engines have shrunk severely in the market. 4. Chains are prone to elongate and break due to chain transmission at the output end. 5, due to the lighter weight of this type of aircraft, generally about 45-70Kg, for hard, board to the soil effect is poor, farming sleepy .