JP3746459B2 - Threshing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chaff sheave swinging structure in a threshing apparatus.
[0002]
[Prior art]
As for the sorts supplied on the chaff sheave, the sorts on the upper transport side generally have a large grain ratio, while the sorts on the lower transport side have a small grain ratio and the majority of the sorts. Straw scraps occupy. Therefore, if all the gaps between the chaff plates are the same, swinging the chaff plate to make the grain on the upper transport side sufficiently leaked will increase the gap on the lower transport side. If the gap between adjacent chaff plates is reduced to prevent leakage of straw waste on the lower transport side, the grain on the upper transport side will be reduced. As a result, there was a problem that the amount of spillage was reduced and the grains could not be recovered sufficiently.
[0003]
For this reason, conventionally, in order to increase the amount of leakage of the sorting material in the upper part of the transport of the chaff sheave than the lower part of the transport, the angle of the chaff plate provided in the same width is configured differently, In some cases, the distance between adjacent chaff plates is set wider than the distance between adjacent chaff plates in the lower conveyance section. As the configuration, it is configured to individually swing the transport upper part and the transport lower part, or to allow the shift of the chaff plate of the lower transport part with respect to the chaff plate of the upper transport part (For example, JP-A-2001-095360) is considered.
[0004]
[Problems to be solved by the invention]
However, in the case of the above-described conventional configuration, the two sets of chaff sheaves must be provided with a rocking structure, respectively. As a result, the structure for attaching the lower part of the conveyance to the connecting rod on the chaff plate becomes complicated, and both of them have a complicated structure for changing the gap and may increase the cost.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a chaff sheave structure in which the gap between adjacent chaff plates is set wider than the lower conveyance part by simply changing the structure and providing it at low cost.
[0006]
[Means for Solving the Problems]
〔Constitution〕
According to the first aspect of the present invention, a chaff sheave is configured by including a large number of chaff plates that can swing around an upper fulcrum, and the lower portion of the chaff plate is connected by a connecting rod to make all the chaff plates The distance between the upper and lower support shafts is equal, and all the chaff plates are configured to swing together while maintaining a parallel state, and the distance between the chaff plates in the upper portion of the chaff sheave is set to the lower chaff sheave. Set the front and rear installation range of the upper part of the conveyance wider than the gap between the chaff plates in the part and wider between the chaff plates than the front and rear installation range of the lower conveyance part where the distance between the chaff plates is narrow and the distance between the chaff plates is Grenshi where most of the wide transport upper part is positioned above the grain pan, and the start end of the transport lower part where the gap between the chaff plates is narrow is connected to the rear of the grain pan. Lies in that is is positioned above the drive.
[0007]
[Action]
According to the above configuration, the separation between the chaff plates is wide at the upper conveyance portion, and the sorted material is likely to leak, and the leakage of the separated separation material is dropped on the gren pan. Since the grains are narrow and the grains are allowed to flow down on the grain sieve, it is difficult for the sawdust mixed in the selections to leak, so that the selection performance can be improved . In addition, even if the chaff plates are swung, the relationship that the distance between the chaff plates in the upper conveyance portion is wider than the interval between the chaff plates in the lower conveyance portion does not collapse, and the upper conveyance portion and the lower conveyance portion Since the movement direction and movement distance of the lower part of the chaff plate are the same in the upper conveyance part and the lower conveyance part, the link structure is the same in the upper conveyance part and the lower conveyance part. Can be configured.
[0008]
〔effect〕
Accordingly, while the ease of leakage differs between the upper transport part and the lower transport part, the link structure of the upper transport part and the lower transport part can be similarly configured to simplify the structure. Can be configured at low cost.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a threshing apparatus for loading a combine to which the present invention is applied. This threshing device pivotally supports a handling cylinder 3 for threshing the harvested cereals that have been nipped and transported by the feed chain 1 to the handling chamber 2, and receives the cerealed product that has been threshed below the handling cylinder 3. A threshing section A that stretches the net 4 and a sieve sorting and wind sorting process while moving the sorting back and forth, and sorting to collect the sorting into the first (grain) and the second sorting. Part B is configured.
[0010]
The sorting section B sorts from the first gren pan 10a, the first gren pan 10a, and the receiving net 4 while moving the sorting leaked from the front part of the receiving net 4 to the grain and straw scraps while sorting the specific gravity. Chaff sheave 11 for sieving and sorting, the second gren pan 10b for transferring the spilled material leaked from the front part of chaff sheave 11 to cereal and straw scraps, and sorting the grain and sieving and sorting from grain 5 The sheave case 6 is provided with a grain sheave 12 that performs a wind sorting process using a sorting air of the type, a Strollac 13 that sorts a sorted product from the rear end of the handling chamber into straw waste and a collected sorted product, and the like. It is configured to swing back and forth with a fixed stroke. The grains that have been wind-selected by leaking from the grain sieve 12 are the first thing collection part 8a to be carried out to a storage tank (not shown), and two types of stabbed rice cake and branched rice cakes dropped from the rear end of the grain sieve 12. The picked goods are sorted and collected by the second picking-up unit 8b that returns the processed goods to the upper side of the sorting through the second-pickup reducing device 9 and reprocesses them. The dust floating on the sheave case 6 is discharged to the outside by the suction air from the dust blower 7.
[0011]
Next, the structure of the chaff sheave 11 will be described. As shown in FIG. 2, the chaff sheave 11 is configured by arranging a plurality of inclined chaff plates 11 a at predetermined intervals in the selected article transport direction, and the chaff plate 11 a is configured to be swingable. And a fixed chaff sheave 11B in which the chaff plate 11a is fixed to the sheave case 6. The structure of the swinging chaff sheave 11A is such that the upper part of each chaff plate 11a is pivotally connected to the supporting member 14 fixed to the sheave case 6 around the fulcrum P via the support shaft 16, and the lower part of the chaff plate 11a. Is pivotally supported by a connecting rod 15 via a support shaft 17. The chaff plate 11a is biased to the closing side by the spring 18, and the chaff plate 11a swings to the open side against the spring bias when the amount of the selection on the swinging chaff sheave 11A increases. When the amount of the selection on the swinging chaff sheave 11A decreases, it swings to the closed side by the spring bias, and therefore the angle of the chaff plate 11a of the swinging chaff sheave 11A corresponds to the amount of the selection on the swinging chaff sheave 11A. can do.
[0012]
The interval between the chaff plates 11a of the swinging chaff sheave 11A is set so that the interval a between the chaff plates 11a at the upper conveyance portion f is larger than the interval b between the chaff plates 11a at the lower conveyance portion r. The upper conveyance part f is configured to make it easier to leak the selection than the lower conveyance part r.
[0013]
The distance between the swing fulcrum P of the chaff plate 11a and the connection point with respect to the connecting rod 15 is set to be equal between the chaff plate 11a of the transport upper part f and the chaff plate 11a of the lower transport part r, and the chaff in the swing chaff sheave 11A is set. All of the plates 11a are connected so as to be always parallel. Therefore, when the chaff plate 11a is swung, the upper conveyance portion f and the lower conveyance portion r of the chaff plate 11a are continuously swung by the connecting rod 15 to maintain the magnitude relationship between the distances a and b. While changing the interval between the chaff plates 11a, even if the upper conveyance portion f and the lower conveyance portion r are swung in series, the upper conveyance portion f and the lower conveyance portion r can be separated from the lower portion of the chaff plate 11a. Since the movement direction and the movement distance are the same, there is no need for a structure that allows the misalignment of the connecting point in the lower portion of the chaff plate 11a in the lower conveyance portion r (or the upper conveyance portion f).
[0014]
[Another embodiment]
In the above-described embodiment, the interval between the chaff plates is set in two stages, that is, the upper conveyance part f and the lower conveyance part r of the swinging chaff sheave 11A, but may be set to three or more stages as necessary. . Further, the swing of the chaff plate 11a is not opened / closed by the weight of the selected material, but the amount of the selected material is detected by a sensor or the like, for example, the amount of the accumulated material on the chaff sheave is detected, and based on the detection result. The chaff sheave 11A may be swung. Further, in the above embodiment, the chaff sheave 11 is configured by the swinging chaff sheave 11A and the fixed chaff sheave 11B, but may be configured by only the swinging chaff sheave 11A.
[Brief description of the drawings]
[Fig. 1] A vertical side view of a threshing device [Fig. 2] A side view of a sheave case [Fig. 3] An enlarged side view of a main part of a swinging chaff sheave [Fig. 4] A vertical front view of a sheave case [Explanation of symbols]
11A Swing chaff sheave 11a Chaff plate 15 Connecting rod P Support point a Interval b Interval f Conveyance upper part r Conveyance lower part

Claims (1)

A number of chaff plates swingable around the upper fulcrum are provided to form a chaff sheave, and the lower portion of the chaff plate is connected by a connecting rod so that the distance between the upper and lower support shafts of all the chaff plates is equal, and all chaff plate is configured to integrally swing while maintaining a parallel state with each other, the distance between the chaff plates are in the transport good part of the chaff sieve, wider than the interval of chaff plates are in the conveying poor part of the chaff sieve, chaff plate Set the front / rear installation range of the upper part of the transport with a large gap between each other shorter than the front / rear installation range of the lower part of the transfer with the small distance between the chaff plates, and place the upper part of the upper part of the transport with a large gap between the chaff plates above the pan. A threshing device that is positioned and positioned above a Glen sheave in which the start end of the lower conveyance portion where the spacing between the chaff plates is narrow is connected to the rear of the Glen pan .

Images