Automatic depth limiter of peanut combine harvester

Abstract

The invention relates to an auxiliary mechanism of a peanut combine harvester, in particular to an automatic depth limiter of the peanut combine harvester. The automatic depth limiter is characterized in that a ground-contour-following device (2) is arranged closely to the ground, an ultrasonic transducer (1) is disposed above the ground-contour-following device (2), an ultrasonic ranging module (3) of the ultrasonic transducer (1) is arranged aiming for a measurement datum plate (12), signals acquired by the ultrasonic ranging module (3) are transmitted and back fed to a controller (4), control signals of the controller are transmitted to a magnetic valve (5), and digging depth of a digging shovel is adjusted through a hydraulic tubing and a double-acting hydraulic cylinder (6); a guide tube component, formed by a lower guide tube (17) and an upper guide tube (15) with opposed openings, is vertically fixed onto an axle of a land wheel (9), a pressure spring (10) is arranged in the guide tubes, and a welded plate (14) and the horizontal measurement datum plate (12) are fixed onto the top of the upper guide tube (15). Through design of the ground-contour-following device, ultrasonic waves are prevented from being transmitted directly to the ground, ranging accuracy is improved, anti-interference performance is high, depth limiting accuracy is high, and breakage rate of peanut harvest is greatly reduced.

Description

technical field [0001] The invention relates to an auxiliary mechanism of a peanut combine harvester, in particular to an automatic depth-limiting device of the peanut combine harvester. Background technique [0002] Subsoil fruit is an important economic crop in my country. There are many kinds of crops, mainly including more than 20 kinds of peanuts, sweet potatoes, garlic, beets, carrots, potatoes, etc., and the output and area of ​​various crops rank among the top in the world. Depth limiting device is a very important operating part of the underground fruit harvesting machine. At present, depth limiting wheels, depth limiting plates and other profiling mechanisms are usually used, which cannot respond quickly when the ground changes continuously. During the harvesting process, the digging depth is unstable and the fruit Leakage and damage are serious. Precise control of the excavation depth is also very important for energy saving, emission reduction, and cost reductio...

AI Technical Summary

Problems solved by technology

[0003] Among the commonly used ranging methods at present, the infrared sensor has strong penetrating ability, but poor anti-interference

Continuous wave radar is suitable for environments with low visibility, but the cost of electromagnetic equipment is high

LiDAR has short measurement time, limited volume and high power consumption

Moreover, they all use infrared rays or radar to directly detect the ground surface to determine the depth, the representativeness of the sampling points is poor, the error is large, and the effect is not good

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