Crawler self-propelled dry type water chestnut harvester

Abstract

The invention discloses a crawler self-propelled dry type water chestnut harvester. The crawler self-propelled dry type water chestnut harvester adopts a double-layer shovel excavating harvesting mode, and a soil layer of a planting area is divided into a non-fruit surface soil layer body and a fruit soil layer body with fruits; an upper shovel is used for removing the surface soil layer body without water chestnuts and rapidly discharging the surface soil layer body to the side edge of the machine, a lower shovel is used for shoveling the fruit soil layer body, and the fruit soil layer body is conveyed to the rear end for fruit and soil separation; a conveying mechanism conveys the soil with the fruits to a separation mechanism in a non-segmented continuous-strip-shaped mode, and the strip-shaped fruit soil body is extruded and divided into large mud pellets by means of soil pre-smashing roller mechanisms which are adjustable in interval and provided with concave-convex double rollers; then the large mud pellets are primarily smashed and torn into small mud pellets through a soil tearing comb tooth roller mechanism; finally, the small mud pellets enter a fine smashing roller set for fine smashing, the fruits and the soil are primarily separated step by step, and sufficient preparation is made for later screening and sorting. Meanwhile, measures are taken in the aspect of structure to prevent the water chestnuts from being damaged as much as possible.

Description

technical field [0001] The invention relates to the technical field of crop harvesting, in particular to a crawler self-propelled dry horseshoe harvester. Background technique [0002] Horseshoe is a crop planted in shallow moist soil. The tip of the stolon growing underground expands into a corm. This bulb is widely eaten as a fruit or vegetable because of its high nutritional content; China's annual horseshoe About 600,000 to 800,000 tons, most of the horseshoe bulbs grow 20-25cm below the surface. The current method of planting and harvesting horseshoes is still very backward, mainly using manual methods, which are inefficient, time-consuming and costly. In the harvesting process alone, an average of 20-30 people are required to harvest manually per mu. The cost of light harvesting is about 2,000 yuan / mu, accounting for about 1 / 5 of the income of horseshoes. Backward production methods have seriously restricted the large-scale development of the horseshoe industry, and ...

AI Technical Summary

Problems solved by technology

However, this technology has the following disadvantages: (1) The horseshoe damage caused by the high-pressure water gun washing and separating the soil is acceptable for a small amount of fresh horseshoe harvest, but the demand for batch harvesting that requires secondary processing such as canning production is the main drawback. Fatal damage; (2) horseshoe damage, perishable after soaking in water, not resistant to storage

But this technology has the following disadvantages: (1) the rotary tiller at the front end of the fuselage can easily damage the horseshoe fruit when harvesting

(2) After the shovel mechanism scoops up the soil and horseshoes, it cannot be smoothly transported to the screen

(3) Since a lot of horseshoes are still mixed in the lumps of soil during harvesting, it is difficult to separate the horseshoes from the soil only by using a sieve

However, this technology has the following disadvantages: (1) the distance between the upper and lower shoveling boards cannot be adjusted, which may cause the horseshoe to be easily shoveled when the fruit soil layer is too thin, and the efficiency of the subsequent screening will be affected if the fruit soil layer is too thick; (2) the topsoil layer passes through The fixed guide groove at the back of the upper shovel is discharged to the fixed side and cannot be reversed. There is a 50% probability that it will be discharged to the unharvested row, which will obviously increase the resistance of the machine. Moreover, the fixed guide groove has a long lead and high friction. If the soil is not in time, it is easy to block the soil; (3) due to the use of the fixed guide trough to discharge the soil, the walking speed of the harvester must be very slow, otherwise it is easy to block, which seriously affects the harvesting efficiency; (4) the back of the lower shovel The conveyor cuts the belt-shaped fruit soil layer into sections of mud strips for transportation. Although the transportation distance can be shortened, it also increases the chance of horseshoes being cut

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