At present, the representative models of silage corn harvesting machinery used in China mainly include 9265 and 926 self-propelled silage harvesters (Figure 5) produced by Modern Agricultural Equipment North (Beijing) Agricultural Machinery Co., Ltd., which can complete harvesting, shredding and throwing the shredded fodder into trailers at one time. They are precision shredded silage harvesters. It mainly consists of the header, feeding device, shredding device, throwing device, engine, chassis, cab, hydraulic system, and electrical system. The header is located directly in front of the machine and is used for cutting and conveying crops.  

   　　At the beginning of the 21st century, at the beginning of the development of silage, CAAMS introduced Italian FH1100 single row forage harvester and FH2100 two row traction forage harvester with working widths of 1.1 m and 2.1 m respectively. Since the operating efficiency could not meet the production requirements, CAAMS gradually withdrew from the market.

   　　The Type A self-propelled silage harvester can be equipped with two types of headers as required: short stalk full width header (forage header) and non branched tall stalk crop header. The forage cutting table can harvest short stalk silage crops such as barley, oats, and grasses and legumes, while the non branching high stalk crop cutting table can harvest high stalk silage crops such as green forage corn and sorghum.

   　　The Mushen 9QSZ-3000 self-propelled green (yellow) storage feed harvester (Figure 6) designed by Xinjiang Machinery Research Institute also has a certain representativeness. This machine is mainly used for non aligned harvesting of straw like feed crops such as silage corn, cotton stalks, sorghum, sugarcane, and oats. It can continuously complete multiple operations such as harvesting, chopping, kneading, and throwing and loading in one go. It mainly consists of the power part, terrain adaptation device, cylindrical finger feeding device, serration, cutting device, forced sequential feeding device, material cutting device, and adjustable throwing and loading device. The main features include non aligned harvesting, vertical disc cutting table, and saw blade cutting. The research institute also has 9QSD-2200, 9QSD-1800, and 9QSD-1200 models

   　　The 926 model can be optionally equipped with a small disc header, suitable for harvesting silage corn and other types of high stem crops. When harvesting different crops, the corresponding header can be replaced, and the host part is universal.

   　　Various models such as the Type I silage harvester have a certain market share.

   　　. Suspended silage harvester

   　　In terms of research on suspended silage harvesters, representative products mainly include the 4QX series corn silage harvesters from Heilongjiang Agricultural Machinery Engineering Science Research Institute. The harvester is a non branched silage harvester for high stalk crops. It is suitable for silage harvesting of high stalk crops such as corn, sorghum and sudanese grass. There are two models, 4QX-10 and 4QX-12. It is connected to the tractor by three-point suspension. The power output shaft speed is 540r/min, the header width is 0.8 and 1.2m, and the productivity is 30 and 40t/h. The machine can cut, feed, chop Multiple tasks such as throwing and loading. The 9080 hanging silage harvester produced by Modern Agricultural Equipment North (Beijing) Agricultural Machinery Co., Ltd., the 9QS-1300 forage chopper produced by Yanbei Animal Husbandry Machinery Group Co., Ltd., and the MB220 forage harvester produced by Heilongjiang Zhaoguang Machinery Factory are also representative.

   　　Existing problems and development trend of silage harvesting machinery

   　　The technology of silage harvesting machinery abroad has been very mature, and there are also many silage harvesting machinery in China, but from the overall situation, there are still three major problems in silage harvesting mechanization. One is the issue of equipment, mainly manifested in poor adaptability and high loss rate; The second issue is the integration of agronomy and agricultural machinery, mainly manifested in the need for agricultural machinery to serve agriculture, increase production, income, low consumption, and safety. However, currently, the integration of agronomy and agricultural machinery is poor; The third issue is the use of the machine, mainly reflected in the poor operation effect and low efficiency caused by improper manual operation. In the future, the development of animal husbandry will be faster and faster, which puts forward higher requirements for the operation quality and efficiency of silage machinery. silage harvesting machinery will also develop along this demand. From the type and use of machines and tools at home and abroad, the development of silage harvesting machinery presents the following trends.

   　　(1) The self-propelled rate multi-function silage harvester that can complete cutting, crushing, throwing and loading operations at one time is still the main development direction.

   　　(2) Multi function is another development trend of silage harvester. It should be suitable not only for corn silage, but also for harvesting wheat, cotton and other crop stalks, and also for harvesting all kinds of forage.

   　　(3) On the basis of digesting advanced technology, production enterprises should develop self-propelled green feed corn harvesters with independent intellectual property rights to improve the operational performance and efficiency of the machinery, especially in the field of cutting tables.

   　　(4) The design is gradually developing towards humanization, mainly reflected in the more comfortable seats in the driver's cab, more convenient control of various handles, and visualization of work effects.

   　　In order to improve the level of harvesting mechanization of silage in China, scientific research, design departments and manufacturers should go deep into rural areas to investigate and study, increase efforts to tackle key technical problems, meet agronomic requirements in design principles and structures, constantly improve product quality, and make certain contributions to the development of animal husbandry in China.

   　　The 9QZ-2600 green feed harvester produced by Shandong Runda Agriculture and Animal Husbandry Technology Co., Ltd. is equipped with a Weichai P6 engine, with strong power and stable and reliable operation; Direct cutting disc cutting table with two pairs of feeding rollers, smooth feeding and high harvesting efficiency; The drum type straw chopping device is equipped with a grain crushing mechanism, which has good chopping and feed crushing mixing effects; Powerful fan and extended throwing tube design, with strong feed throwing ability, perfectly suitable for following operations of various vehicle models; The three-speed mechanical stepless transmission and imported Danfoss hydraulic continuously variable transmission combination of the walking system solve the smooth coordination of harvesting and walking speed; Equipped with a 5 cubic meter self dumping box, convenient for operations on land and small plots; The dual oil dispersion design ensures the reliable operation of hydraulic working devices and hydraulic walking devices.

Article link: Intelligent Manufacturing Network