JPH0436584Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an onion-transporting feed roller axis adjustment device for controlling the onion posture in an onion harvesting machine.

(Prior Art) An onion harvesting machine is conventionally known, which conveys onions dug up 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. A device composed of a disk rotating 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 onions are held in the correct position during conveyance. This is a harvesting machine that transports the foliage while arranging the foliage portion downward, and the cutter rotates to cut the foliage portion.

In some areas, stones are mixed in in the field, and stones may be thrown into the screw conveyor along with the onions that have been dug up. In this case, not only the harvested onions are damaged, but also the cutter and other harvesting machines may be damaged.For this reason, it is necessary to remove the stones thrown into the screw conveyor as soon as possible, but in the conventional technology, the screw conveyor Since the distance between the axes of the feed rollers used was fixed, it was not possible to remove the stones.

Also, if you can change the distance between the axes of the feed roller, you can obtain the distance between the axes that matches the size of the onion.
This makes it possible to improve the accuracy of onion adjustment work.

(Problem to be solved by the invention) The problem to be solved by the invention is to provide an adjustment device for adjusting the distance between the axes of the feed rollers for conveying onions, which makes it possible to adjust the distance between the axes of the feed rollers constituting the screw conveyor. It is.

(Means for solving the problem) The means for solving the problem in this invention are as follows:
In an onion harvester that aligns the stems and leaves of onions dug up from the field downward and cuts the stems and leaves, a plurality of pairs of cylindrical feed rollers installed horizontally along the front-rear direction are arranged, and each feed roller A screw conveyor is provided in which a spiral band made of an elastic material is wound around the surface of the cylindrical portion of the onion, and the onions are rotated inwardly to control the posture of the onions. A tightening bolt is provided protruding from the bearing box that serves as the starting end of onion conveyance, and the tightening bolt is formed on the frame and has a length in a direction perpendicular to the longitudinal direction of the feed roller. The bearing box, which is inserted into the hole and fixed to the frame with a nut, and serves as the end of the onion conveyance, is fixed to an L-shaped fitting provided on the frame, and is fixed to the L-shaped fitting provided on the frame.
It is characterized by a cutter installed in the mold fittings.

(Example) Fig. 1 is a plan view of a screw conveyor for conveying onions, Fig. 2 is a side view, and Fig. 3 is a side view of an onion harvester equipped with this device.

First, referring to FIG. 3, a traveling vehicle body 1 of an onion harvester has a crawler 2 serving as a driving wheel in the center and a control wheel 3 in the front. Further, a scraper 4 and a soil separation conveyor 5 connected to the scraper 4 are provided at the front lower part of the traveling vehicle body 1, and a lifting conveyor 6 is further provided for conveying the dug onions to the upper part of the vehicle body.

On the other hand, a plurality of pairs of screw conveyors 10 equipped with the present invention are provided on the upper surface of the traveling vehicle body 1, and the onions conveyed by the front lifting conveyor 6 are supplied onto the screw conveyor 10. . Then, the onion is transferred by the screw conveyor 10 to a cutter 30 provided at the end of the conveyance, and during this time,
Along the way, the stems and leaves are turned downward, and
The cutter 30 cuts the stems and leaves.

Next, the present apparatus will be explained with reference to FIGS. 1 and 2. The screw conveyor 10 is composed of a pair of parallel cylindrical feed rollers 11, and a spiral band 12 made of an elastic material is formed on the outer peripheral surface of the feed rollers 11.
is spirally wound at a predetermined pitch.
Note that the spiral band 12 is formed by feeding rollers 1 facing each other.
1, a gap 13 is formed between the two feed rollers 11. or,
In the vicinity of the conveyance end of the feed roller 11 (section B in FIG. 1), a protruding band 14 made of an elastic material is wound adjacent to the spiral band 12. The protrusion band 14 needs to be wrapped at least once around from the end of the conveyance, but the spiral band 12
It is not necessary to wrap it around the entire area, and it is sufficient to provide it only near the end of the conveyance.

On the other hand, the feed roller 11 is provided with a rotating shaft 15 . The rotating shaft 15 is fixed to a connecting plate 16 provided on the inner wall of the feed roller 11, is constructed integrally with the feed roller 11, and is rotated by a drive mechanism (not shown). Further, each of the feed rollers 11 rotates inwardly, and the onions supplied to the conveyance start end A of the conveyor are conveyed toward the conveyance end B by the feeding action of the spiral band 12.

The rotating shaft 15 is mounted on bearing boxes 17 and 18 containing bearings, and among these bearing boxes, the bearing box 17 at the transport start end A has a tightening bolt 19 protruding downwardly, and is tightened. The attached bolt 19 is inserted into a horizontal elongated hole 21 formed in the frame 20, and is fixed to the frame 20 with a nut 22. Further, an L-shaped metal fitting 23 provided on the frame 20a is inserted into the conveyance end B of the feed roller 11, and the bearing box 18 is fixed to the L-shaped metal fitting 23 inserted into the feed roller 11.

A cutter 30 is provided at the conveyance end B of the screw conveyor 10, and the cutter 30 has a thick circular receiving plate 31 on one side and a disc blade 32 on the other side, and both are in pressure contact. Along with the installation, a bowl-shaped guide plate 3 is installed on the top surface of each
3 and 34, the circular receiving plate 3
1. A portion of the disc blade 32 is housed within the feed roller 11.

Since the present invention is as described above, the gap 13 between the feed rollers 11 constituting the screw conveyor 10
To adjust the bearing box 17 at the transport start end A, loosen the nut 22 of the tightening bolt 19 that attaches the bearing box 17 to the frame 20, move the tightening bolt 19 along the elongated hole 21, and adjust the feed. roller 11
The desired distance between the axes is set by changing and adjusting the pitch in the lateral direction.

As a result, for example, in fields with many stones,
The gap 13 of the feed roller 11 is widened at the start end of the conveyance to prevent stones from being ejected from the gap 13 and sent to the cutter 30. Also, in fields where there are few stones, the gap before and after the feed roller 11 is made equal. Adjust the distance between the feed roller axes according to the field conditions.

(Effect of the invention) In the present invention, the bearing box at the starting end of onion conveyance, which pivotally supports a pair of feed rollers with a spiral band formed on the outer periphery, is installed in a direction perpendicular to the longitudinal direction of the rollers. Since the position is adjustable, it is possible to select the most appropriate distance between the feed roller axes depending on the field conditions.

[Brief explanation of drawings]

FIG. 1 is a plan view of a screw conveyor equipped with the device of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a schematic diagram of an onion harvester. 10...Screw conveyor, 11...Feed roller, 12...Spiral band, 13...Gap, 14...
Protrusion attached, 15...Rotating shaft, 16...Connection board, 1
7, 18...Bearing box, 19...Tightening bolt, 20
...Frame, 21...Long hole, 22...Natsuto,
23...L-shaped metal fitting, 30...Cutter, 31...
Circular receiving plate, 32...Disc blade, 33, 34...Guide plate.

Claims (1)

[Scope of utility model registration request] In an onion harvester that aligns the stems and leaves of onions dug up from the field downward and cuts the stems and leaves, a plurality of pairs of cylindrical feed rollers installed horizontally along the front-rear direction are arranged, and each feed roller A screw conveyor is provided in which a spiral band made of an elastic material is wrapped around the cylindrical surface of the onion, and the onions are rotated inwardly to control their posture, and the rotating shaft of the feed roller of the screw conveyor has a built-in bearing. A tightening bolt is provided protruding from the bearing box that serves as the starting end of onion conveyance, and the tightening bolt is formed on the frame and has a length in the direction orthogonal to the longitudinal direction of the feed roller. The bearing box, which is inserted into the hole and fixed to the frame by a nut, and serves as the end of onion transportation, is fixed to an L-shaped fitting provided on the frame, and a cutter is installed in the L-shaped fitting. A device for adjusting the axis of the feed roller for conveying onions in an onion harvester.