JPH0442997Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a threshing machine in which an oscillating main swinging transfer sorting plate is disposed in the sorting air passage below the handling barrel chamber. This relates to the machine's sorting device.

[Prior art]

The sorting device in the conventional thresher installed in this type of combine harvester, etc. is located below the handling barrel.
A main rocking transfer sorting plate that extends rearward beyond the handling barrel room from below the starting end of the handling barrel room, and a secondary rocking plate that is located above the main rocking transfer sorting plate and extends rearward from below the terminal end of the handling barrel room. A swinging transfer and sorting mechanism including a dynamic transfer and sorting plate is provided.

However, the sorting wind force generated by the main winnowing machine that blows through the main sorting air passage in which this oscillating transfer sorting mechanism is installed has a distribution that tends to be strongest at the center in the width direction and gradually weaken toward the outer sides. Therefore, in order to perform good sorting by the oscillating transfer sorting mechanism using this main Karakin wind force as it is, it is necessary to
It is conceivable that the layer distribution of the threshed grain leaking from the handling net on the main swinging transfer sorting plate is thick in the center and thinner towards both sides.

For this reason, when a plurality of guiding guide plates for guiding threshing to the center are installed directly on the transfer surface of the upper surface of the main oscillating transfer sorting plate as in the past, the main oscillating transfer sorting plate Since all the upper layers of grain threshing are regulated within the opposing spacing between the guide plates, which gradually become narrower toward the rear, the free agitation movement of grain threshing performed on the main oscillating transfer sorting plate is prevented. On the other hand, the grains in the lower layer cannot be separated from the straw waste in the upper layer by utilizing the difference in specific gravity by the agitation sorting action performed on the main oscillating transfer sorting plate. There was a problem in that good oscillating sorting by the dynamic transfer sorting plate was not possible.

Further, when the guide plate is directly fixed to the transfer surface of the upper surface of the main swinging transfer sorting plate, there is a problem in that awns and debris in the processed material are caught in the adhesive gap and accumulated, causing the processed material to remain.

[Purpose of invention]

The present invention was devised in consideration of the above-mentioned conventional situation in order to solve the problems, and its object is to provide a sorting device for a thresher which can effectively guide the upper layer of straw waste to the center of the sorting duct where the sorting wind force is stronger without impeding the original agitation sorting action of the main oscillating transport sorting plate, thereby improving the sorting performance of the main oscillating transport sorting plate.

[Structure of the idea]

The sorting device for a threshing machine according to the present invention that achieves the above object includes a main swinging transfer sorting plate that is located below the handling barrel and extends rearward beyond the handling barrel from below the starting end of the handling barrel. In the installed threshing machine, a plurality of guidance guide plates are transferred to the back surface of the starting end side of the sub-oscillating transfer sorting plate which is arranged above the main shaking transfer sorting plate and extends rearward from near the end of the handling barrel chamber. It is characterized by hanging obliquely from both outer sides toward the center so that the facing interval on the upper side is wide and the facing interval on the lower side is narrower.

〔Example〕

Hereinafter, the drawings showing the present invention as an embodiment will be explained.

As shown in Figs. 1 to 3, a threshing machine 1 of the type that is mounted on a combine harvester or the like of this type is provided with a handling barrel chamber 5 in which a handling barrel 3 having a large number of handling teeth 2 embedded therein is housed. A handling net 4 is stretched over a predetermined range around the handling barrel 3 in the handling barrel chamber 5 to allow the threshing produced by the handling barrel 3 to leak through the mesh.

A handling trunk shaft 6 is installed in the machine body below the handling trunk chamber 5 of the threshing machine 1.
A pressure-type main winch wheel 8 is provided which rotates around the axis of the main winch shaft 7, which is arranged in a direction perpendicular to the axial direction of the main winch shaft 7. It is branched into a main sorting port 11 and a sub-sorting port 12 by a flow plate 13 facing toward the machine, and a suction impeller 10 located on one side of the machine body is arranged in the upper rear part of the machine body so as to be rotatable around its suction shaft 9. Between this suction impeller 10 and the main winch impeller 8,
a main sorting air passage 16 that blows from the main sorting port 11 above the first spiral 14 and further passes through a swinging sorting mechanism 15 to be described later to reach the suction impeller 10;
A sub-selection air path 18 is formed which blows from the sub-selection port 12 above the second product reduction spiral 17 and further passes through the swinging selection mechanism 15 to reach the suction impeller 10.

On one side of the machine, there is a first grain lifting tube 19 for taking out the sorted grains out of the machine, and a second grain return thrower 20 for returning the second product to the swing sorting mechanism 15. The first grain lifting cylinder 19 is connected to the transfer end of the first spiral 14, and the second grain reducing thrower 20 is connected to the second grain reducing spiral 17. .

Further, on the other side of the fuselage, an upper handling type handling port 21 communicating with the handling trunk chamber 5 is opened along the axial direction of the handling trunk shaft 6, and outside of this handling port 21 is located on the lower side. A feed chain 22 is wound around the feed chain 22, and a pinch rail 23 is provided oppositely above the conveyance surface of the feed chain 22. While being held between the rails 23 and moved through the handling port 21 to the terminal end, the grain tip side is threshed, and the discharged grain culm after threshing is transferred to a discharge culm disposed at the terminal end of the feed chain 22. It is transferred to the starting end side of the discharge chain 24 and discharged outside the machine.

The aforementioned oscillating sorting mechanism 15 includes a main oscillating transfer sorting plate 25 disposed on the lower side below the handling net 4.
and a sub-oscillating transfer sorting plate 35 disposed on the upper side.
The oscillating sorting mechanism 15 consisting of 5 and 35 is oscillated in the front and back direction by a oscillating mechanism (not shown), thereby imparting stirring motion to the grain threshing mainly at the flat portion 26 on the oscillating transfer sorting plate 25. The main swinging transfer sorting plate 2
5 is as follows.

In other words, this main swing transfer sorting plate 25
The main oscillating transfer sorting plate 25 is extended from below the starting end to beyond the handling barrel chamber 5 to approximately below the rear suction blade chamber. A downwardly sloping flat part 26 that receives the grain and transfers it rearward while imparting a stirring motion to the threshing, a transfer protrusion 27 continuous with an upward incline behind this flat part 26, and further this transfer protrusion 27. A sorting net section 2 continuous with an upward slope behind the
8 and a sorting net 28 located behind this sorting net 28.
It is composed of a sorting flow plate 30 that is steeply inclined upward with a drop port 29 between it and the rear end, and a chaff sheave 31 that is arranged at an upward slope behind the sorted flow plate 30.

Further, as shown in detail in FIGS. 4 and 5, below the sorting net section 28, sorting sections are arranged in parallel at a predetermined pitch in the width direction with a predetermined interval between them and the back side of the sorting net section 28. Spokes 37 are arranged, and the base ends of the sorting spokes 37 are fixed to the rear surface on the front end side of the wind direction plate 38, and the tips thereof are close to the sorting flow plate 30. Utilizing the fact that the sorting spokes 37 resonate with the oscillations of the oscillating transfer sorting mechanism 15, the vibrating sorting spokes 37 can remove the grains even when there is straw waste attached to the grains. The straw waste is allowed to fall from between the resonating sorting spokes 37, and can be carried on the main sorting wind that passes between the sorting spokes 37, so that the sorting can be performed particularly well during raw threshing when wet grain culms are threshed. It's getting old.

A sub-oscillating transfer-selecting plate 35 is disposed above the main-swinging transfer-selecting plate 25 and extends rearward from below the substantially terminal end of the handling barrel chamber 5. , a predetermined length for transferring the threshed grains discharged from the open dust outlet 32 of the handling net 4 at the end of the handling barrel chamber 5 rearward without dropping directly onto the main swinging transfer sorting plate 25 below. Transfer protrusion 33
and a chaff sheave 34 connected to the rear of the transfer protrusion 33 with an upward slope.
The tip of the chaff sheave 34 extends below the suction impeller 10.

In the present invention, a plurality of guide plates 36 are formed to have a length that guides the upper layer of threshed grain transferred by the main oscillating transfer sorting plate 25 to the center in the width direction. It hangs down from above on the upper side of the sorting net portion 28 of the sorting plate 25, and in the embodiment, it is the back surface on the starting end side of the sub-oscillating transfer sorting plate 35 disposed above the main swinging transfer sorting plate 25, that is. , the base end portions of a plurality of guiding guide plates 36 are respectively fixed to the rear surface of the transfer protrusion 33, and the lower ends of the plural guiding guide plates 36 are positioned below. The guiding guide plate 3 is suspended over a predetermined length on the upper side of the sorting net portion 28 extending from near the end of the flat portion 26 on the main swing transfer sorting plate 25 to near the start end of the transfer protrusion 27.
Reference numeral 6 may be fixed using a mounting plate provided separately from the transfer protrusion 33 on the sub-oscillating transfer-selecting plate 35 located above the main-oscillating transfer-selecting plate 25.

Then, the plurality of guidance guide plates 36
As shown in the plan view of the figure, the opposing intervals on the upper side are wide in the transfer direction, and the opposing intervals on the lower side are narrower, so that they are arranged in an oblique manner from both outer sides toward the center. The guiding guide plates 36 are the second
As shown in the figure, the central part in the width direction is short and the flat part 26 on the main swing transfer sorting plate 25 is made to hang down so that it becomes longer as it goes to both outer sides.
The upper layer of threshed grain that is transferred can be guided to the center in the width direction, and in the upper straw layer guided to the center, the grains in the lower layer gradually leak out on the sorting net section 28. Possibly the sorting net section 28
The central part in the width direction, where the wind blows through, rides on the strong main sorting wind and is selected by the wind.

In this way, a plurality of hanging guide plates 3
6 guides the upper layer of threshed grain transferred on the main oscillating transfer sorting plate 25 to the center in the width direction. The agitation sorting action of threshing, which separates the grains from the straw waste in the upper layer, is not hindered in any way, and the lower grain layer is not forced to concentrate in the center, and the straw waste in the upper layer is separated. It is possible to effectively guide the material to the widthwise center of the sorting air channel where the sorting wind force is strong, and this further improves the sorting performance of the main swinging transfer sorting plate installed in this type of sorting air channel. can be done.

Since the guide plate 36 is fixed above and hung down, the fixed portion does not come into direct contact with the material to be treated, and the flow of the material to be treated is not obstructed by awns or the like inserted into the fixing gap.

In addition, in the case of a swinging transfer and sorting mechanism provided with a sub-swinging transfer and sorting plate 35, a plurality of guiding guides 36
It is also possible to attach it by directly utilizing the back surface of the sub-oscillating transfer-selecting plate 35 arranged above the main-oscillating transfer-selecting plate 25.

[Effect of idea]

In short, the sorting device for a threshing machine according to the present invention has a main swinging transfer sorting plate swingably arranged below the handling barrel chamber and extending rearward beyond the handling barrel chamber from below the starting end of the handling barrel chamber. In the threshing machine, on the back surface of the starting end side of the sub-oscillating transfer-selecting plate which is disposed above the main swing-transfer-selecting plate and extends rearward from near the end of the handling barrel chamber,
A plurality of guide plates are hung diagonally from both outer sides toward the center so that the facing interval on the upper side is wide and the facing interval on the lower side is narrower when facing the transfer direction. It does not interfere in any way with the agitation sorting action of threshing, which is carried out on the main oscillating transfer sorting plate to separate the grains in the lower layer and the straw waste in the upper layer. It is possible to effectively guide the upper layer of straw waste to the widthwise center of the sorting air passage where the wind force is strong, without concentrating it in the center. The sorting performance of the main swing transfer sorting plate can be further improved.

Therefore, without interfering with the original agitation sorting effect of the main swing transfer sorting plate, the straw waste in the upper layer is effectively guided to the center in the width direction of the sorting airway where the wind force is strong, and the straw waste inside the sorting airway is It is possible to improve the sorting performance by the main swing transfer sorting plate disposed in the main swing transfer sorting plate.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a side sectional view of the threshing machine, Figure 2 is a front sectional view taken along the line A-A in Figure 1, Figure 3 is a plan view of the main parts, and Figure 4 is an enlarged view of the sorting spoke. 5 is a front sectional view taken along the line B--B in FIG. 4. 1... Threshing machine, 4... Handling net, 5... Handling barrel room, 1
5... Rocking transfer and sorting mechanism, 25... Main swinging transfer and sorting plate, 35... Sub-swinging transfer and sorting plate, 36... Guidance guide plate.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A threshing machine in which a main rocking transfer sorting plate is swingably disposed below the handling barrel and extends from below the starting end of the handling barrel to the rear beyond the handling barrel. , a plurality of guide plates are arranged on the back surface of the starting end side of the sub-oscillating transfer-selecting plate, which is disposed above the main oscillating transfer-selecting plate and extends rearward from near the end of the handling barrel chamber, with a plurality of guiding guide plates facing in the transfer direction; A sorting device for a threshing machine, characterized in that the facing interval is wide, and the facing interval on the lower side is narrower, so that it hangs down obliquely from both outer sides toward the center. 2. The sorting device for a threshing machine according to claim 1, wherein a plurality of guide plates are suspended such that the guide plates are short at the center in the width direction and gradually become longer toward the outside.