JPH0448662Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an onion harvesting machine, and more particularly to a harvesting machine equipped with an onion stem and leaf cutting device.

(Prior Art) A harvesting machine that transports onions dug from a field with the stems and leaves facing downward, and cuts the stems and leaves with a cutter installed at the end of the conveyance device, is known in the art. A device constructed of a disk that rotates in the vertical direction is described in Japanese Utility Model Application Publication No. 52-54451 and Japanese Patent Application Publication No. 53-44320.

In all of these prior examples, a screw conveyor is provided with a pair of two parallel rotating cylinders, and a spiral feeding body made of an elastic material is formed on the surface of each rotating cylinder, and the onion is controlled in its posture during conveyance. It is a harvesting machine that conveys the foliage so that the foliage is aligned downward, and the cutter is designed to rotate to cut the foliage.

Onions are left in the field until harvest time.
When dug up from the field, the stems and leaves are half dead. For this reason, even if the onion is brought close to the cutter during transportation, there is a problem in that when the onion's dying stems and leaves come into contact with the cutter that rotates at high speed, the part escapes and cannot be cut reliably.

In order to solve the above-mentioned conventional problems, the inventor of the present invention proposed Japanese Patent Application Nos. 60-225526 and 61-83884.
In these prior examples, a plurality of pairs of screw conveyors each consisting of a pair of rotating tubes are installed, and a cutter for cutting the foliage portion is provided at the end of each conveyor. The reason why a plurality of pairs of the above-mentioned screw conveyors are provided is so that a number of rows corresponding to the number of installed conveyors can be harvested in one run.
Also, to supply onions to the screw conveyor,
First, onions in the field are dug up with a scraper and then fed to a soil separation conveyor to remove the soil attached to the onions.
Pebbles, etc. are removed and then conveyed to the screw conveyor.

By the way, if multiple rows of onions are dug at the same time, the onions will mix on the soil separation conveyor, and when they are conveyed to the screw conveyor via the lifting conveyor, an average amount of onions will be supplied to each screw conveyor. I can't do that. On the other hand, the rotation speed of the screw conveyor must be set at a high speed in the part where a large amount of onions are fed, otherwise onions will clog, but since it is not possible to change the rotation speed according to the amount of onions being fed, the operator It was time consuming to monitor the work status and prevent onions from clogging.

(Problems to be solved by the invention) The invention solves the problems of the prior art, and
This invention is an improvement on the invention previously proposed by the inventor of the present application, in which multiple ridges are dug at the same time and onions in the dug ridges are fed to a screw conveyor so as not to be confused with onions in other ridges. The purpose is to provide harvesting machines.

(Means for solving the problem) The means for solving the problem in this invention are as follows:
A scraper is provided at the front lower part of the vehicle body, a soil separation conveyor is provided adjacent to the scraper, and a lifting conveyor is provided adjacent to the soil separation conveyor. A cutter is installed at the end of each screw conveyor,
In a harvesting machine, onions that have been dug out from the field with a scraper are conveyed through a soil separation conveyor to a lifting conveyor, and from the lifting conveyor to a screw conveyor, and the stems and leaves of the onions are cut off at the end of the screw conveyor. The present invention is characterized in that a guide rod is provided that divides the conveyance path of the soil separation conveyor into a number corresponding to the number of ridges of the onions to be harvested from the intake section to the vicinity of the terminal end.

(Example) Fig. 1 is a side view of the entire harvester, Fig. 2 is a perspective view of the onion guiding mechanism of the present invention attached to the soil separation conveyor, Fig. 3 is a plan view of the screw conveyor of the harvester, Figure 4 is a longitudinal sectional view of the same.

The harvester has an engine 2 mounted on a vehicle body 1, crawlers 3 connected to a drive shaft of the engine 2 and rotationally driven on both sides of the vehicle body 1, and running wheels 4 in front.

A scraper 5 is provided at the front lower part of the vehicle body 1, and a soil separation conveyor 6 is provided adjacent to the scraper 5, and a lifting conveyor 7 is further provided for conveying onions to the upper part of the vehicle body. A plurality of pairs of screw conveyors 8 made of cylindrical book bodies are provided (FIG. 3), and a cutter 9 for cutting the stems and leaves of onions is provided at the end of each screw conveyor 8.

The scraper 5 is provided on a frame 11 whose front part can be raised and lowered by a lifting mechanism 10,
The soil separation conveyor 6 has rods 62, 62 disposed at appropriate intervals on chains attached to sprockets 61, 61 which are mounted on the front, rear, left and right sides of the frame 11.
As the chain rotates, the scraper 5 separates the onions from soil, pebbles, etc., and transports only the onions toward the rear of the vehicle.

The onion guiding mechanism, which is the subject of the present invention, is provided on the soil separation conveyor 9. As described above, since the harvester is designed to simultaneously dig up multiple rows of onions, it is provided with a number of guiding mechanisms corresponding to the number of rows that can be harvested. In this example, four ridges are harvested at the same time, so in order to avoid mixing up the onions dug in each ridge on the soil separation conveyor, two ridges are placed at positions where the width of the frame 11, that is, the width of the scraper 5, is divided into four equal parts. Guide rods 12, 12 are provided respectively.

The guide rod 12 has one end fixed to the scraper 5 and stands up so as to cover the end of the soil separation conveyor 6, and its tip extends toward the end of the conveyor 6, and the free end is connected to the conveyor 6 and the frame. 11.
Further, the guide rod 12 is fixed to the scraper 5 in an inclined manner so that the width of the take-out part at the end of the conveyor is narrower than the width of the take-in part fixed to the scraper 5. For this reason, the onions dug out by the scraper 5 are transported to the next lifting conveyor 7 on the soil separating conveyor 6 in an orderly manner for each ridge without being confused with those from other ridges.

The lifting conveyor 7 is a conveyor that transports the onions supplied from the soil separation conveyor 6 toward the top of the vehicle body, and is arranged at appropriate intervals on chains attached to sprockets 72, 72 that are mounted on a frame 71. The rod 73 is further provided with a comb-shaped protrusion 7.
4 and 74 are provided, and the onion is conveyed upward while being held by the projections 74 and 74 by the rotation of the chain.

Furthermore, the screw conveyor 8 is composed of four pairs of rotating cylinders 81, 81, each of which has a spiral band 82, 82 wound around its outer periphery, and the rotating cylinders 81, 81 are arranged to rotate inwardly toward each other, so that the onions fed from the lifting conveyor 7 are transported toward the cutter 9 attachment portion, which is the end of the screw conveyor, and the onions are aligned downward. The cutter 9 cuts the stems and leaves of the onions transported to the end of the screw conveyor 8.

The above-mentioned screw conveyor 8 is provided with chevron-shaped guide plates 13, 13 at the boundary between each conveyor so that the onions supplied from the lifting conveyor 7 are not discharged to an adjacent conveyor.

Note that a guide body 14 is provided between the lifting conveyor 7 and the screw conveyor 8 to prevent the onions from falling.

In the present invention, with the above-described configuration, when the conveyor and other members are driven while traveling on the vehicle body 1, the onions dug out by the scraper 5 are supplied onto the soil separating conveyor 6, and the onions are removed by the soil separating conveyor 6. ,
After being separated from pebbles and the like, it is conveyed to a lifting conveyor 7, and further conveyed from the lifting conveyor 7 to a screw conveyor 8. On the soil separation conveyor 6, the guide rods 12, 12 transport the onions in a plurality of rows in an orderly manner for each row, so that the lifting conveyor 7 and the screw conveyor 8 are supplied with onions on average. Accidents caused by onions clogging on the screw conveyor can be prevented.

(Effects of the invention) In this invention, a guide rod is installed on the soil separation conveyor installed adjacent to the scraper to prevent the onions in each row from mixing with onions in other rows on the conveyor, so the posture of the onions can be adjusted. Onions can be fed evenly to the screw conveyor, which prevents accidents such as harvesting without cutting the stems and leaves due to onion clogging.

[Brief explanation of the drawing]

FIG. 1 is a side view of the harvester, FIG. 2 is a perspective view of the soil separation conveyor to which the onion guide mechanism of the present invention is attached, FIG. 3 is a plan view of the harvester's scraper conveyor, and FIG. 4 is a vertical sectional view of the same. 1... vehicle body, 2... engine, 3... crawler, 4... running wheel, 5... scraper, 6...
Soil separation conveyor, 7... lifting conveyor, 8... screw conveyor, 9... cutter, 10... lifting mechanism, 11... frame, 12... guide rod, 13... guide plate, 14... guide body, 61... sprocket, 62... rod, 7
1...frame, 72...sprocket, 73...
...rod, 74...projection, 81...rotating cylinder, 82
...Spiral belt.

Claims (1)

[Scope of utility model registration request] A scraper is provided at the front lower part of the vehicle body, a soil separation conveyor is provided adjacent to the scraper, and a lifting conveyor is provided adjacent to the soil separation conveyor. A cutter is installed at the end of each screw conveyor, and the onions dug out from the field with a scraper are conveyed to the lifting conveyor via the soil separation conveyor, and from the lifting conveyor to the screw conveyor, and then at the end of the screw conveyor. A harvesting machine for cutting the stems and leaves of onions, characterized in that a guide rod is provided that divides the conveyance path of the soil separation conveyor from the intake part to the vicinity of the terminal end into a number corresponding to the number of ridges of the onions to be harvested. Onion harvesting machine.