Basic parameters:
Engine model: 1E4 1F-8 engine type: air-cooled two-stroke engine power: 1.47kw/6500-7000r/min engine displacement: 40.2cc carburetor type: floating machine weight: 9.5KG Packing size: 41min. 130* 130 mm mode of transportation: side tank volume: 1.2L net weight: 7.5kg tool diameter: 250mm productivity: 0.8mu/h fuel consumption: 0.6L/h total loss rate: m.
trait
1, harvested cleanly, laid neatly, and can be laid or stacked. 2, adapt to the plains, hills, terraces, triangles and other large and small fields and muddy fields. 3. It can be used to harvest wheat, rice, highland barley, hemp, beans and other crops. Put on the corresponding knives, and install the upper and lower trays and safety covers. 4. You can also harvest shrubs, grasses and reeds, prune the branches of the tea garden and rest the flower beds. 5. Simple operation and convenient maintenance. Function expansion: it can be used to harvest crops such as wheat, rice, highland barley, hemp and beans. Put on corresponding knives, install upper and lower trays and safety shields, and harvest shrubs, grasses, reeds, tea garden branches, flower beds, etc. It is used for clearing forest land such as cutting shrubs and weeds, pruning, cutting small-diameter trees and bamboo, tending young forests, transforming secondary forests and tending and cutting forests. Install some replaceable additional devices or equipment on the brush cutter, which can also be used for harvesting crops such as rice and wheat, pumping water, drilling holes in buildings and spraying pesticides. The development of brush cutter is closely related to the development of low-power machinery. After World War II, chain saw manufacturers in the Federal Republic of Germany, the United States, Sweden and other countries used the transmission shaft and cutting parts as accessories for mowing grass and shrubs. On this basis, Japan introduced and developed automatic harvesters.
Three kinds of automatic harvesters and their development.
Portable automatic harvesters are divided into two types: side-hung automatic harvesters are driven by hard shafts, which are mainly composed of engines, transmission systems, clutches, working parts, control devices and side-hung belts. One end of the transmission shaft is provided with a single-cylinder two-stroke air-cooled gasoline engine and a 0.75-2kW centrifugal friction clutch; The other end is provided with a working part consisting of a reducer and a cutter. There are many kinds of working parts, such as circular saw blades, blades or nylon wires. When working, hang the hook ring on the aluminum alloy sleeve of the transmission shaft on the shoulder strap under the operator's shoulder, hold the handle, and swing the hard shaft laterally to finish the work of mowing grass and shrubs. The weight of the machine is about 6 ~ 12kg, and the rotating speed is about 4500 ~ 5000rpm. ② Backpack automatic harvester. Driven by a flexible shaft, the general structure is similar to that of a side-hanging brush cutter, except that the engine is carried on the back of the operator, and the cutting part is driven by the flexible shaft, and the engine power is generally 0.75 ~ 1.2 kW. The engine and the rear frame are connected at two points, and special rubber parts are equipped to isolate vibration. The flexible shaft is a steel wire flexible shaft sheathed in a hose to transmit torque. The hose is a threaded pipe wrapped with steel belt, and the steel belt is wrapped with metal woven net and rubber protective sleeve to prevent dust from invading the shaft and keep the lubricating oil on the shaft surface. The cutting width is generally between1.5 ~ 2m. Walking automatic harvester is supported by walking wheels, pushed forward by people, and driven by engine to cut and irrigate working parts. Its structure and working principle are similar to those of portable brush cutter. The hanging automatic harvester is hung behind the tractor and driven by the power output shaft to rotate, which is suitable for large-area cutting and irrigation operations. It mainly consists of a frame, a saw blade, a transmission device, a suspension device and a push plate. During the cutting and irrigation operations, the tractor travels backwards at a working speed of 5 km/h, and can saw shrubs with a diameter of 10 cm.
Present situation and development trend of automatic harvester in China
In recent years, wheat combine has developed rapidly, its technology has become more and more mature, and its structure has become more and more reasonable, but its further development is facing great challenges in applicability. Small combine has its own unique applicability, so it has its own market level. 1. Small combine harvester is an essential tool for farmers in mountainous areas to get rich. Jingxing County, Shijiazhuang City, Hebei Province is a mountainous county, planting wheat 10700 hm2 every year, mostly in mountainous areas, with small and irregular plots. For many years, there were only 100 combine harvesters in this county, but in 2000, small combine harvesters sold well in Jingxing mountain area. The reasons are as follows: ① Mountain terrain features are only applicable to minicomputers. (2) The reason why farmers in mountainous areas have purchasing power is because they have transferred their labor force and increased their income by mining, burning ash and engaging in transportation. ③ The price of mechanical harvesting of wheat is low, which makes users feel economical and practical, while organic users think that they can get rich, and small combine harvesters are attractive. In 2000, the average income of harvester can reach more than 8000 yuan under the condition of reducing operating expenses. (4) County agricultural machinery management department held training courses for machine maintenance personnel, organized machine harvesting services, and buyers had confidence in making good use of combine harvesters. ⑤ The combined harvest is faster than the segmented harvest, and the second crop of corn can be planted early in busy farming, and the yield can be increased by two crops a year, which is not affected by the cold climate in mountainous areas and delays the sowing of wheat. The mountainous area accounts for 62% of Hebei's land area, and small agricultural machinery market is full of vitality. With the development of mountainous areas and the gradual affluence of farmers, the market for small combine harvesters will become larger and larger. 2. Small combine harvester is a transitional product for farmers in plain areas to get rich. Taking Hebei Province as an example, the development of combine harvester can be roughly divided into the following situations: ① Exploratory development from low-cost small to medium and large. Xinji city, which started the earliest and fastest, started around Northeast Farm 1990. At that time, the price of a Beijing -2.5 harvester in Taipei was 60 thousand yuan, while an old Dongfeng -5 harvester in Northeast State Farm only needed about 1 10 thousand yuan. ② The rural economy in plain areas has further developed, but farmers are not rich enough. The combine harvester has not been used for a long time, and the small combine harvester has developed rapidly and has strong vitality. Suzhou City, Anhui Province, tanghe county City, Henan Province, Linyi City, Shandong Province, Cangzhou City, Hebei Province, east of 106 National Road, are very popular. ③ Some minicomputers have been gradually replaced by medium-sized self-propelled combine harvesters. Renqiu City, Hebei Province is a plain area, with an average annual planting of more than 30,000 hm2 of wheat. In 2000, 199 combine harvesters were added, of which self-propelled combine harvesters accounted for 82%, medium-sized backpack harvesters accounted for 14%, and the cutting width was less than 1.5m, accounting for 4%. Local machine operators and users said that self-propelled combine harvesters were quick, so they sold well. ④ Product quality is the key to guide sales. ⑤ The popularization of medium-sized self-propelled combine harvester is related to the reform of planting form. A few years ago, there were many wheat and corn intercropping, which was suitable for small combine harvesters. Now, more seeds are planted for summer corn stubble, which relaxes the restrictions and requirements on cutting width. In some areas, there is no intercropping of wheat and corn, and farmers have better economic conditions, so there are many medium-sized self-propelled sales. However, with the phenomenon that "Mike" earns less money becoming more and more serious, the harvesting of cross-regional operation will gradually become local harvesting. Where the development of small combine harvesters slows down or stops, it will be reborn. The reasons are as follows: ① High operating cost. (2) redundant machines and low cost. A few years ago, users cut off machines, stopped machines, held coins and other machines, and many machines were parked on the ground, competing for work, so the harvesting fee was getting lower and lower. ③ Severe drought, poor growth and low food prices. The above three aspects are inevitable in the future, which will dilute the concept of "buying machines to make money", but it is impossible to regress to the traditional sectional harvesting method without mechanical harvesting of wheat. So there will be a small combine harvester with less investment, quick effect and convenience. 3. The small combine harvester is an accessory product for intercropping and interplanting for more than one year. In order to make full use of light and heat resources and achieve high agricultural efficiency, intercropping and interplanting for more than one year is the development direction, and it is also a planting method gradually recognized by farmers. Especially in some cool areas with altitude 1500m and latitude greater than 42, the required accumulated temperature limit of crops can not be guaranteed, but it can be met by intercropping and interplanting. Zhongwei and Zhongning in Ningxia, Zhangye and Jinchang in Hexi Corridor in Gansu, Xinglong and Zunhua in Hebei, Jinzhou and Huludao in Liaoning, etc. Most of them are intercropped with wheat, corn, broad bean and sunflower. In order to give full play to local advantages, some areas advocate cotton-wheat intercropping and jujube-grain intercropping, such as jujube trees in Cangzhou and summer cotton in Handan. Due to the limitation of space and row spacing, small combine harvester has strong advantages in harvesting wheat in intercropping and interplanting fields. In Anyang and Xinxiang areas of Henan Province, there is also a wide-row planting method of corn, that is, before wheat harvest, corn is sown on the back of the border above 1m, thus prolonging the growth period of corn and improving its quality. In this field, a small combine will be selected to harvest wheat. The development trend of small harvester is to use new materials to further reduce weight; Adopt low vibration engine and advanced vibration reduction and isolation device, rationally configure parts and components, and reduce the harm of vibration to human body; Improve the machining and assembly accuracy of machinery, improve the suction and exhaust system to reduce noise; Add various safety protection devices to improve the safety of operation; Shrub chopping device is added to the hanging brush cutter, which simplifies the cleaning process of cutting shrubs.
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