JPH09275761A - Receiving net in thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receiving net in a thresher, improved in rigidity in the width direction, excellent in operability and handleability, so designed as to alternately provide mesh rows having level difference in the width direction of the net so as to conduct high-performance threshing operation while promoting grain dropping. SOLUTION: This receiving net is set up in a threshing chamber and along the outer periphery of the rotative locus 1p of each threshing tooth 1a in the threshing cylinder 1, and mesh rows 51, 52 having level difference in the width direction of the net are provided alternately. It is preferable that these mesh rows 51, 52 are provided along the rotative direction of the threshing cylinder 1 and slantly relatively to grain culm transfer direction.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an improved structure of a net for a thresher.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Publication No. 6-26123, there has been proposed a threshing machine net which is integrally molded with a synthetic resin which is provided in opposition to a handling cylinder in the threshing machine.

[0003]

However, in the receiving net disclosed in the above publication, since the net surface facing the handling cylinder is formed as a smooth surface, an appropriate number of partition plates are erected on this net surface. Set up,
Suppressing the early removal of grain removal from the end of the handling room,
Consideration is given so that the jam processing is performed in the threshing section handling room. Since this partition plate is a member that gives resistance to the movement of grain removal, it is easy for the wetting material to adhere to the mesh surface when threshing the wetting material between the treating teeth planted in the handling cylinder. In addition to clogging, the clogging easily grows and the mesh size is easily reduced, so that there is a drawback that the leakage net sorting performance is deteriorated. Further, the net having the above structure has a problem that the structure is complicated and the cost is increased because the net thickness and the reinforcing frame member are firmly formed and stretched.

[0004]

In order to solve the above conventional problems, the present invention is a threshing in which a net 5 is stretched in the handling chamber 6 along the outer circumference of the rotation path of the handling tooth 1a of the handling body 1. In the machine
Mesh rows 51, 52 having a height difference in the width direction of the receiving net 5
Are formed alternately. That is, in the mesh row, high and low surfaces are alternately formed in a striped pattern, and linear steps are formed at the boundary of both meshes. Also, both mesh rows 5
1, 52 are arranged obliquely along the rotation direction of the handling cylinder 1 toward the transfer direction of the grain culms.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. 1A is a thresher that can be mounted on a harvester such as a combine, and has a configuration similar to that of a conventional one, and is composed of front and rear side plates and a top plate that rotatably mount the handling barrel 1 internally. The body case 2 is provided so as to be vertically rotatable around a rotation shaft 4 provided on the main body frame 3 of the thresher A. Then, along the outer circumference of the rotation locus of the handling tooth 1a planted in the handling body 1, the receiving net 5 divided into the left net 5a and the right net 5b is formed.
The upper mounting frame 3a, the inner mounting frame 3b, the handle side mounting frame 3c
Is detachably attached to the handling chamber 6 and the handling chamber 6
A feed chain 7 is provided along the handle 6a side. In addition, an oscillating sorting body 8 is arranged below the receiving net 5 so as to be oscillating and sorting.

The receiving net 5 according to the present invention is made of a synthetic resin material having high wear resistance, high durability and high water repellency, such as high-density polyethylene, hard vinyl chloride, ABS resin, hard nylon, and fluororesin. It is used and molded by a molding die by a molding machine into the shape shown in FIG. This receiving network 5
As shown in FIG. 2 (B), adjacent mesh rows 51 and 52 are formed by mesh lines 53, which are composed of a left mesh 5a and a right mesh 5b which are formed by bending a plate-like surface having a large number of meshes 50. Are formed in a concavo-convex pattern or a striped pattern by the high mesh row 51 and the low mesh row 52 so that they have different heights alternately.

The corner line 5p of the mesh rows 51 and 52 along the direction of rotation of the handle cylinder is the rotation locus line 1p of the handle tooth 1a.
On the other hand, in the rotation direction of the handling cylinder 1, the angle is inclined from the upper hand side to the lower hand side toward the grain transfer direction of the feed chain 7 by the angle θ. Since the receiving net 5 is formed in this way, the mesh rows 51 and 52 are rib-shaped in comparison with the conventional receiving net formed on a flat surface to enhance the strength of the net.

The angle θ depends on the diameter of the handling cylinder 1,
A normal one may be tilted at about 12 to 13 degrees, and this angle is changed in consideration of the property of the object to be processed, the size of the handling cylinder 1, the number of rotations, and the like. Although the corner wire 5p of the receiving net 5 shown in FIG. 2 (B) is formed to have a relatively square shape, it has a little roundness to prevent moisture and the like from adhering to it, and a leaked material such as a grain is It can be made easy to leak.

In addition, although the mesh 50 has a square shape in the above-mentioned illustrated example, the shape is not limited to this and a round shape can also be used. In the threshing work by the threshing machine A having the receiving net 5 configured as described above, when the grain culm is inserted from the handling mouth 6a and is nipped and conveyed by the feed chain 7, the threshing machine 1 rotates to thresh by the handling teeth 1a. The grain-removed grain is screen-sorted by the receiving net 5, and the grains and small debris that have leaked through the mesh 50 are sift-sorted by the rocking sorter 8, and the grain is collected outside the machine as the first product, and the debris is collected. Classes will be discharged outside the aircraft.

Further, the foreign matters accumulated in the handling room 6 are the nets 5
While being carried around by the handling cylinder 1 while being moved in the grain culm transfer direction, it is loosened. The grain thus threshed leaks through the mesh 50, and the debris such as straw is discharged from the end of the handling chamber 6 in the same manner as the conventional device, and the second sorting process is performed. It is discharged outside. At the time of such threshing work, the receiving net 5 having the mesh rows 51 and 52 formed in an uneven row so as to have the corner lines 5p with a height difference alternately has the high mesh row 51 with the handle teeth 1a. Close to, the grain ears of the grain culm are properly shredded, and the low mesh row 52 acts so as to temporarily separate the ears of the grain culvert from the tips of the handle teeth 1a. Therefore, between the tips of the handling teeth 1a and the net surface of the receiving net 5, the action of quickly and alternately striking and separating the grain culm has the effect of rotating the handling cylinder 1 on the mesh surface and transferring the grain culm. Is successfully repeated at.

As a result, the mesh 5 can be brought as close as possible to the handle tooth 1a to improve the threshing action, but the threshing load can be reduced without increasing the threshing resistance. At the same time, the mesh selection can be performed well. In addition, the mesh rows 51 and 52 having such an action are provided so as to be inclined toward the transfer direction of the grain stalks along the rotation direction of the handling cylinder 1, so that the corner lines 5p and the recessed low meshes are formed. When the grove of the row 52 carries the thrashes with the rotation of the handling cylinder 1 and threshes, it guides and discharges the threshing while appropriately controlling it toward the end side of the handling chamber 6. After being subjected to various threshing treatments, the nets 5 can be discharged to the outside of the machine after being properly screened without being clogged.

Therefore, it is possible to provide a thresher capable of improving the rigidity of the net with a simple structure and performing high-performance and highly efficient threshing work. The receiving net 5 is preferably formed of synthetic resin, but the present invention is not limited to this synthetic resin molded product, and can be similarly used for a perforated iron plate or the like.

[0013]

The present invention has the following effects by being configured as described above. According to the invention of claim 1, it is possible to perform a high-performance threshing operation while promoting threshing treatment of grain by appropriately performing threshing treatment by a mesh array having a height difference.

Further, the rigidity can be increased as compared with a flat receiving net, so that the net can be securely attached to the machine body. According to the invention of claim 2, the threshing carried around by the handling cylinder is properly threshed and discharged by the inclination of the mesh row so that the grain leaks well and the rigidity of the receiving net in the width direction is improved. can do.

[Brief description of drawings]

FIG. 1 is a front sectional view of a thresher.

FIG. 2A is a plan view showing a relationship between a handling cylinder and a net;
(B) is a cross-sectional view of the receiving net.

[Explanation of symbols]

 A Threshing machine 1 Handling cylinder 1a Handling tooth 1p Rotation locus line 5 Receiving net 6 Handling room 7 Feed chain 51,52 Mesh row 5p Corner line

Claims (2)

[Claims] 1. A threshing machine having a catching net 5 provided along a circumference of a rotation locus of a treating tooth 1a of a treating drum 1 in a catching chamber 6, wherein a mesh row 51 having a height difference in the width direction of the catching net 5, Threshing machine receiving net in which 52 is formed alternately. 2. The threshing net of the threshing machine according to claim 1, wherein the mesh rows 51, 52 are formed obliquely along the rotation direction of the handling cylinder 1 in the transfer direction of the grain culms.