Application characteristics and precautions of combined ground preparation machine

Application characteristics and precautions of combined ground preparation machine

Machines such as joint land preparation machines are simply "lazy" weapons in the agricultural world. The little braid will show you the style of the combined land preparation machine. development history.


In 1831, the American farmer inventor designed and manufactured two horse-drawn combined land preparation machines, with a harvesting efficiency of more than 30 people, which was a major breakthrough in the development of combined land preparation machines. Since then, McCormick has been working to improve and manufacture combined combined land preparation machines that are in short supply. By 1870, he built a large joint joint ground preparation machine hauled by 40 horses and reached a width of 30 meters. The combined land preparation machine is also equipped with a baling device for wheat and oranges.

Tillage preparation in agricultural production is mainly the process of using machinery and tools to cultivate and crush the soil. In this process, the soil structure is loose and the surface is smooth, which effectively optimizes the physical properties of the plough layer and creates a good foundation for further planting. condition.

Traditional mechanized farming and land preparation mainly rely on tractor plow, bottom shovel or rotary tiller and other agricultural machinery for a number of operations. Compaction problems in the soil layer lead to the destruction of the aggregate structure in the soil layer, which affects the yield and quality of crops.

A new type of agricultural land preparation. It has the advantages of high efficiency and low energy consumption. It can significantly reduce the soil consolidation caused by the repeated entry of traditional mechanized agricultural machinery, which is conducive to optimizing the structure of cultivated land and increasing agricultural production.. Through the analysis of the application characteristics of the combined ground preparation machine, the operating advantages of the combined ground preparation machine are expounded, and the matters needing attention in the mechanized combined ground preparation operation are summarized.

The combined soil preparation machine has become an indispensable agricultural machinery for field operations. Using it to harvest wheat, compared with general artificial harvesting, threshing loss can be reduced by 5-8%, saving a lot of labor. A large grain joint land preparation machine can harvest 400-500 mu of wheat a day.

Modern combined combined land preparation machines can harvest more than 120,000 square meters of grain in one working day. In each operation across the field, a bale of grain about 5.5 meters wide is cut.

Why the joint ground preparation machine first appeared in the United States and Australia, there are the following reasons to explain. First, the agricultural scale of the two countries is large. The fields are endless, so farmers who harvest fast have an advantage over their peers. In addition, early combined combined land preparation machines were more suitable for dry climates than wet climates. Machines for drying grain were developed before the success of the combined land preparation machine in the UK, because the harvested grain was not dry enough to be stored immediately.

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Defects in castings and forgings

The defects produced in the casting and forging process are similar to the defects produced in the ingot, but they are still process defects, including pores, inclusions, shrinkage holes, loose holes, cracks, etc.

Production of castings and forgings

Castings and forgings must be melted by electric furnaces, mainly electric arc furnaces and induction furnaces. According to the different lining materials and slag system, can be divided into acidic furnace and alkaline furnace. Carbon steel and low alloy steel can be smelted in any furnace, but high alloy steel can only be smelted in alkaline furnaces.

Inspection of Casting and Forging

The complex information system management interface of casting and forging, such as poor ultrasonic penetration, coarse grain, uneven organization, etc., all enhance the scattering of an ultrasonic wave by students, and the energy can be effectively attenuated, so that the detectable thickness is smaller than that of forgings.

What are the advantages and disadvantages of casting and forging

One of the advantages of casting and forging is the flexibility of design. Personnel design has a large degree of freedom of design choice for the shape and size of castings, especially for parts with complex shapes and hollow sections. Steel castings can be manufactured using a unique process known as core assembly.