Small potato combine harvester

Abstract

The invention provides a small potato combine harvester. The small potato combine harvester is composed of a machine frame, a soil cutting disc device, an excavating device, a six-stage potato conveying and separating device and a potato collecting device. A first-stage conveying and separating device utilizes a quincunx-imitated vibration driver to enable a potato-soil mixture conveyed by the excavating device to slightly shake at high frequency, large soil blocks are crushed, meanwhile, front-back rolling and collision of potatoes are avoided, and damage to the potatoes is reduced; a second-stage conveying and separating device grabs small soil blocks through a finger-shaped claw type conveying device, meanwhile, the potatoes are prevented from directly falling onto a second-stage rod conveying device to bounce, mutual collision between the potatoes and between the potatoes and rods is reduced, and damage to the potatoes is further reduced; a third-stage conveying and separating device has a soil discharging function; a fourth-stage conveying and separating device uses a roller brush to brush off potato skin covering soil; and a disc-type rotating shaft of a fifth-stage conveying and separating device enables the potatoes to roll forwards, and residual soil is further removed to become clean potatoes. According to the small potato combine harvester, automatic operation of digging, separating, conveying and harvesting of the potatoes is achieved, and the harvesting efficiency and the harvesting quality of the potatoes are improved.

Description

technical field [0001] The invention relates to farmland harvesting machinery, in particular to a small potato combine harvester. Background technique [0002] At present, there are mainly two harvesting methods for potato harvesters. One is to use a large-scale potato combine harvester to harvest. After sieving the potatoes excavated from the soil through a 1-2 stage conveying and screening device, the potatoes that are excavated from the soil are screened and then used in parallel. Collecting machinery completes the collection and transportation of potatoes. This harvesting method, because model is bigger, energy consumption is also bigger. Another kind is to adopt various small potato combine harvesters to harvest. Among them, the simplest small-scale potato combine harvester is only equipped with a common bar conveying sieve device (the conveying sieve does not vibrate), and the excavated potatoes are simply screened on the straight running conveying sieve, and then di...

AI Technical Summary

Problems solved by technology

The disadvantages of this one-stage conveying and separating device are that the rolling frequency of the potato-soil mixture is low with the wave-like movement of the bar conveying device, and the soil clods are not completely broken, and some unbroken small soil clods are sent to the ground with the operation of the bar conveying device. to the next level of conveying and separating device, which reduces the potato-soil separation effect of the first stage conveying and separating device, and increases the burden of the next stage conveying and separating device; Roll back and forth, and the potatoes will collide with each other, causing damage to the potato skin, affecting the quality of the harvested potatoes and the market price

[0004] In addition, the potatoes separated by the first-stage conveying and separating device will inevitably carry a small amount of small clods and be transported to the next-stage conveying device that mainly performs the conveying function. Finally, they will be exported together with the potatoes because they cannot be effectively removed, affecting Harvested Potato Quality

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