JPS6043927B2 - Threshing machine handling room - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a handling chamber of a thresher that is configured so that processing conditions can be adjusted in accordance with the conditions of the culm.

Inside the handling chamber of the threshing machine, a cylindrical handling cylinder with a large number of handling teeth spirally arranged around its circumferential surface is mounted on a shaft, and the lower side of this handling cylinder and the rear side which is the tip side of the threshing husk culm A receiving net formed in an arc shape concentric with the handling barrel is stretched over the handle.

Further, the upper part of the handling cylinder is covered by a handling cylinder cover having an arcuate inner peripheral surface substantially concentric with the handling cylinder. The culm, which is inserted into the handling chamber by the tip and conveyed in the axial direction of the handling cylinder, is threshed by the handling teeth of the rotating handling cylinder, and as a result, several threshed grains are placed in the handling chamber. It is filled with straw waste generated during threshing, ear cuts, persimmons, and other processed materials. These are carried around by the handling teeth along the inner circumferential surface of the receiving net and the handling barrel cover, and are transported in the axial direction of the handling barrel by the spiral action of the handling teeth. It is then massaged and processed between. As a result of this treatment, several grains are separated and fall through the mesh of the receiving net, and the treated material is discharged together with some grains from the dust exhaust port at the end of the handling chamber and separated by a sorting device. They are then sorted. In the processing and preliminary sorting carried out in this way in the handling room, it is desirable to separate and drop as many grains as possible during transfer and to subdivide the material to be processed. However, because the resistance of the receiving net was small, satisfactory processing and sorting performance could not be expected.

Therefore, in order to increase the resistance of the wall surface of the handling chamber, it has been proposed to provide a step surface facing the handling teeth in the circumferential direction.
However, this works effectively when the culm is damp, but when the culm is dry, it often damages the tip and reduces threshing performance. Katta. The present invention has been made in view of the above points, and includes forming a step surface on the back side wall surface and providing an adjustment member for adjusting the area of the step surface to be large or small.
By doing so, it is possible to adjust the transfer resistance of the processed material to be transferred along the wall surface according to the difficulty of sorting and processing, and to always perform the sorting and processing work in the best possible manner regardless of the state of the culm. Some provide a handling room for the threshing machine configured to maintain the conditions. Hereinafter, its configuration and the like will be explained in detail with reference to embodiments shown in the drawings.

1 to 3 show the handling chamber of the threshing machine according to the present invention, FIG. 1 is a cross-sectional view of a combine threshing machine implementing this, and FIG. 2 is a cross-sectional view of the main parts of the handling chamber and an explanation of its operation. 3 are perspective views of the main parts.

In these figures, a frame 3 of a threshing machine 2 whose legs are supported by left and right running crawlers 1 is integrally formed with a handling chamber 4 and a sorting chamber 5 extending from below in the width direction of the machine. In the handling chamber 4, a handling cylinder 7 having a large number of extracted teeth 6 spirally arranged on its circumferential surface is mounted on a shaft, and the tip of the culm 8 is positioned below the handling cylinder 7. In the bottom handling type threshing machine 2 for threshing, the handling barrel 7 rotates in the direction shown by arrow A in the figure. In addition, a feed chain 9 is stretched along the front side of the handling chamber 4, and below the feed chain 9, a clamping member is biased toward the feed chain 9 by a compression coil spring 10. A rod 11 is supported along the running end. A receiving net 12 formed in an arc shape concentric with the handling barrel 7 is stretched over a net frame 13 below the handling barrel 7 and on the tip side of the culm 8, that is, on the back side of the handling chamber 4. A dust removal plate 14 extending in the cutting line direction of the receiving net 12 is provided on the rear side of the terminal end.

Further, the upper part of the handling cylinder 7 is covered by a handling cylinder cover 15 which is formed into a double structure by an outer plate 15a joined to the frame 3 and an arcuate inner plate 15b joined to this. It's covered. The inner plate 15b of the handling trunk cover 15 and the upper end of the receiving net 12 are connected by a bonding material 16, and by forming the bonding material 16 vertically, an arc-shaped The lower end of the inner plate 15b and the bonding material 16
The upper end of! A stepped surface 15c facing the circumferential direction of the handling tooth 6 is formed between the two. Furthermore, a rectangular window 17 extending almost the entire length of the receiving net 12 is opened in the bonding material 16, and the arc trunk shaft 18, which is mounted along the lower edge of the window 17, is provided with a rectangular window 17 that extends in a side view. A barrel 19, which is a shaped adjustment member, is pivoted at the lower end.

The arc barrel 19 is rotated together with the arc barrel shaft 18 by rotating an operating lever 20 provided at the externally projecting end of the arc barrel shaft 18, as shown in FIG. 2a. When it is rotated counterclockwise, its inner surface continues to the receiving net 12 and the inner plate 15b to form an arc-shaped handling chamber wall surface, and the step surface 15c is shielded.
Moreover, when this is rotated clockwise as shown in FIG. 2b, its inner surface recedes from the orbit of the handling tooth 6 shown by the chain line B and becomes flush with the bonding material 16, and the stepped surface 15c is exposed. Further, below the receiving net 12, grains that are oscillated by the rotation of the eccentric cam 21 and falling from the receiving net 12 and dust discharged from the dust outlet at the end of the receiving net 12 are collected. Swinging shelf 2 for sorting with sorting net 22 and stroke rack 23
4 is installed.

Further, below the swinging shelf 724, there is a winnower 25 that rotates in the direction shown by arrow c in the figure to raise and blow a sorting air, and a No. 1 spiral conveyor 26 that transfers the sorted grains. A second spiral conveyor 27 for transporting the second items remaining as a result of sorting is arranged in parallel with the axial direction. In addition, at the shaft end of the No. 2 spiral conveyor 27, there is a No. 2 grain lifting machine 29 that scoops up the transported No. 2 grains, lifts them up inside the No. 2 return cylinder 28, and returns them to the handling chamber 4. is provided. A suction fan 30 is attached to the side plate of the frame 3 diagonally above the stroke rack 23, and rotates in the direction shown by arrow D in the figure to suck up light straw waste, dust, etc. and discharge it to the outside of the machine.
In the threshing machine 2 configured as described above, the culm 8, whose root portion is held between the feed chain 9 and the clamping rod 11 and whose tip portion is inserted below the handling barrel 7, is treated to rotate in the direction of arrow A. The grain is threshed by teeth 6.

The threshed grains pass through the mesh of the receiving net 12 and are transferred to the sorting net 22.
After falling onto the top and being sorted by the swinging of the swinging shelf 24 and the air blowing from the winnower 25, it falls onto the No. 1 spiral conveyor 26, where it is transported and collected. On the other hand, the processed materials such as ear cuts generated during threshing are transferred while being processed in the handling chamber 4, and are discharged from the dust outlet onto the strorack 23 and sorted.
As a result of the sorting, grains are collected and light straw waste etc. are discharged out of the machine by a suction fan 30. The remaining waste becomes so-called second grains, and is returned to the handling chamber 4 through the second reducing cylinder 28 by the second grain lifting machine 29. The reduced second material is combined with the treated material and the above sorting is repeated. In the threshing and sorting work carried out in this way, in the case of normal work where threshing is easy and little processing material is generated, by rotating the arc barrel 19 counterclockwise as shown in Fig. 2a,
On the inner surface of the arc barrel 19, the receiving net 12 and the inner plate 15b form a continuous surface, and the step surface 15c is shielded, so that the processing material carried around by the handling teeth 6 circulating in the direction of arrow A and the processing material merging therewith. The second item is sent smoothly as shown by arrow E, and the processing capacity is not degraded.

In addition, when threshing is difficult and a large amount of processed material is generated, such as when threshing wet husks, so-called wet processing, etc., rotating the arc barrel 19 clockwise as shown in FIG. Since the surface 15c is exposed, the processing object and the second object, which are carried around by the handling teeth 6, are separated from each other by the step surface 15, as shown by the arrow F.
It collides with c and moves while being subjected to resistance. Therefore, the processing time in the handling chamber 4 can be extended, and the fragmentation of the processed material and the separation of grains are promoted. In addition, arc barrel 1
9 can be fixed at any position by positioning the operating lever 20, and the exposed area of the step surface 15c can be adjusted arbitrarily, so that it can correspond to the conditions of any culm. . As is clear from the above explanation,
According to the present invention, by forming a step surface on the back side wall surface of the handling chamber of the threshing machine and providing an adjustment member for adjusting the area of the step surface to a larger or smaller size, the processing material to be handled and the two Since the transfer resistance of the material can be adjusted according to the difficulty of the sorting process, it is possible to always maintain the best sorting and processing performance even if conditions such as culm varieties and dry/wet conditions vary. can.

[Brief explanation of the drawing]

1 to 3 show the handling chamber of the threshing machine according to the present invention, FIG. 1 is a cross-sectional view of a combine threshing machine implementing this, and FIG. 2 is a cross-sectional view of the main parts of the handling chamber and an explanation of its operation. 3 are perspective views of the main parts.

Claims (1)

[Claims] 1 A stepped surface facing the circumferential direction of the handling tooth is formed on the back side wall surface, and a surface forming a part of the wall surface is provided, and this surface is moved forward and backward with respect to the circumferential locus of the handling tooth to determine the area of the stepped surface. A handling chamber for a threshing machine characterized by being provided with an adjustment member for adjusting the size of the grain.