Rice seed metering device

Abstract

A rice seed metering device comprises a seeding amount control mechanism, a seed unloading mechanism, a seed clearing height adjusting mechanism, a seed protecting mechanism, a transmission system, aseed unloading flow guide body and a seed box which are installed on a shell. The seeding amount control mechanism transversely penetrates through a cavity of the shell through a pair of end face bearing supports. The seed unloading mechanism is arranged below the front end of the shell, the seed clearing height adjusting mechanism is arranged above the shell and nested on the left side face of the shell to slide up and down, and the seed box is arranged above the seed clearing height adjusting mechanism. The seed protecting mechanism is hung at the rear end of the shell and is in concentric fit friction transmission with the seeding amount control mechanism, and the seed unloading flow guide body is arranged at the bottom of the shell. According to the device, the shell serves as the mainbody, other parts are nested and installed, disassembly and assembly are convenient, parameters are convenient to adjust, the universality is high, the device can well adapt to various machine matched hanging frames, and the device has extensibility. Meanwhile, the seeding amount control mechanism can make the depth of holes quickly adjustable, breaks through the length-width ratio limitation ofseeds, and realizes multi-variety-level seeding amount stepless adjustment.

Description

technical field [0001] The invention relates to the technical field of agricultural mechanized rice direct seeding, in particular to a rice metering device. Background technique [0002] my country has a vast area of ​​arable land, and there are many types of arable land. Among them, the area of ​​paddy field arable land accounts for about a quarter of the total arable land area in the country. Rice is the main planting area. The annual planting area is about 450 million mu, and the annual total rice output is nearly 210 million tons. , accounting for 36% of the country's total grain output. The mechanization level of rice planting exceeds 38%. In recent years, with the rapid development of rice mechanized direct seeding technology, the planting method of arranging rice seeds in "rows and holes" in the field through the seed metering device saves money and increases Efficient and increasingly popular with farmers. [0003] Due to the wide variety of varieties and large diff...

AI Technical Summary

Problems solved by technology

[0003] Due to the wide variety of varieties and large differences in physical and mechanical characteristics in the double-cropping rice area, the existing seed metering devices are difficult to meet the requirements of precise sowing of different grain types of rice seeds, and there are common problems such as inconvenient adjustment of sowing rate, inconvenient unloading of seeds, and poor or clear seeding. difficult problem

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