JPH0226278Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a swing sorting device in a threshing section of a combine harvester.

In other words, in the threshing section of a combine that is constructed by extending a swinging sorter from the bottom of the handling chamber toward the dust exhaust side, it is possible to improve the sorting performance of the chaff sheave in the swinger, and to The present invention is to provide a system that allows selection to be carried out reliably and with good performance in accordance with the situation, and to be carried out suitably.

Next, the embodiment shown in the drawings will be described.

FIG. 1 shows a side view of the combine harvester.
The structure is similar to the conventional structure, with a threshing section B equipped with a threshing section B, and a reaping section C installed in front of the threshing section B.

The threshing section B includes a handling chamber 1, a handling barrel 9, and a supply port 1.
0, Crimp net 11, No. 4 port 12, Dust sorting room 1
3, Exit 3 14, Karachi 15, Conveyor 1 16,
It has the same structure as the conventional type equipped with a No. 2 conveyor 17, a dust inlet 18, a suction inlet 19, etc.

A swinging sorting body A is swingably installed from the bottom of the handling chamber 1 to the bottom of the waste sorting room 13, and the starting end of the swinging sorting body A, which is the lower side of the supply port 10 and the handling room 1, is The feed pan 2 is stretched, and the oscillating sorter A
A grain sheep 21 connected to the lower part of the flow grain board 20 is stretched below the center of the grain board 20.

A large number of chaf sieve fins 3 made of elongated plates are installed horizontally in the middle part of the swinging sorter A from the crimp net 11 to the lower part of the dust inlet 18. The interval L ₁ between _{the rear sheave fins 3, 3 is} narrow as shown in FIG. The interval L _{3 between the plurality of chaf sheave fins 3, 3} is made slightly wider than the interval L ₂ , and all the chaf sheave fins 3 are inclined in the front-rear direction and arranged side by side at intervals in the front-rear direction. On the back of the rearmost chaff sieve fin 3, there are a large number of sieve lines 2 extending in the front-rear direction and arranged in parallel at intervals in the lateral direction.
The front parts of the sieve wires 22 are connected and fixed by a mounting fitting 23, and each sieve wire 22 is installed so that its terminal end side extends to the rear of the swing sorting body A.

A large number of holes 26 are formed at intervals in the longitudinal direction in the lower portions of both support frame plates 25, which are installed with a gap between both side plates 24 on both sides of the swing sorting body A. Hole 2 is diagonally above the
6 are respectively drilled, and support pins 28a protruding from both ends of the lower edge of each chaf sheave fin 3 are inserted into both holes 26, and above each chaf sheave fin 3. Support pins 29a protruding from both ends of the edge are fitted into both elongated holes 27, and each chaf sheave fin 3 is installed so that it can rotate around the support pin 29a and change its inclination. Only in the sheave fin 3, the rotation shaft 28 on the lower edge side and the support pin 29 on the upper edge side are connected to the support pin 2.
8a and support pin 29a.

In addition, a large number of holes 31 are bored at intervals in the long interlocking rods 30, 30 that interpose the side plates 24 between the support frame plates 25, and the holes 31 are formed outwardly from the long holes 27 of the support frame plates 25. Connect the tips of the support pins 29a, 29 of the respective chaff sheave fins 3 that protrude to the respective holes 3 of both interlocking rods 30.
1 and 31, respectively, one end of the rotating shaft 28 is fitted freely in the hole 32 bored in one side plate 24, and a bolt is attached to the tip of the rotating shaft 28. An adjustment lever D extends orthogonally from a support shaft 34 fixed by a support shaft 33, and the adjustment lever D is formed so that its base side becomes a spring plate 35 and its tip side becomes an engagement part 36 having a U-shaped cross section. , side plate 24
A large number of engagement recesses 38, into which the engagement portions 36 engage, are arranged and formed at the end of a locking plate 37 fixedly provided on the outer surface of the locking plate 37.

An opening 40 is formed in the portion of the outer plate 39 of the threshing section B that faces the adjustment lever D, etc., and an opening/closing lid 41 is installed in the opening 40 so as to be openable and closable.

However, when working with a combine harvester, the crimp net 1
The objects to be sorted that have fallen into the feed pan 2 from the feed pan 1 are sent onto the respective chafe sieve fins 3 and are fed, and the objects to be sorted that have fallen from the crimp net 11 or the dust inlet 18 are also fed by the respective chafe sieve fins 3. However, since the space between the front chaff sheave fins 3 and 3 on the feed pan 2 side is narrow, and the gap at the rear is wide, the material to be sorted becomes uniform on the chaff sheave and can be fed. Therefore, the grain sheave 2 below from the chaff sheave
Fewer pieces of culm, etc. fall onto the No. 1 conveyor 17, and the materials to be sorted that are fed by the chaff sieve are sent onto the sieve line 22, and due to the swinging, the No. 2 materials fall onto the No. 2 conveyor 17 below. Exhaust material is sieve line 2
It is discharged from above 2 to the 3rd port 14 side.

Further, when the opening/closing lid 41 is opened and the adjustment lever D can be operated through the opening 40, and the engagement portion 36 of the adjustment lever D is engaged with the other engagement recess 38,
The supporting shaft 34 and the rotating shaft 28 rotate to change the inclination of the chaf sieve fins 3. At the same time, the inclination of each chaf sieve fin 3 is changed in the same way by the interlocking connection of both interlocking rods 30, and at the same time, the sieve line 22 also changes its inclination. By changing the inclination and adjusting the inclination according to the condition of the objects to be sorted, it is possible to carry out sorting that is suitable for each type of object.

The operation of the inclination changing mechanism of the chaff sheave fin 3 will be explained in detail.

(a) When the flow rate is low (when the amount of material to be sorted is small), adjust the chafing sieve fin in the closing direction (so that the angle the fin makes with the horizontal plane becomes smaller).

(b) Conversely, when the flow rate is high, adjust the chaff sheave fins in the opening direction (so that the angle the fins make with the horizontal plane becomes larger).

With the fin angle adjustment in (a) and (b) above, the amount of leakage from the fins and the amount of screening air acting on the fins change, but in the front and rear parts where the fin spacing is different,
The rate of these changes varies greatly.

(a) Front part. In the front part where the fin spacing is relatively narrow, there is a relatively large overlap margin between the fins in the vertical direction. Therefore, when the fins are adjusted in the closing direction, the vertical passage becomes considerably narrower, and the amount of leakage and the amount of air sorting become extremely smaller than before the adjustment.

The ratio of paddy is relatively high in the front part. Therefore, when the flow rate is low, it is desirable to improve the sorting by making the vertical passage width relatively small to reduce the sorting air volume and leakage amount. Furthermore, when the flow rate is high, it is desirable to reduce the No. 3 loss by relatively increasing the vertical passage width.

That is, in the front part, it is necessary to greatly change the sorting action when adjusting the fins according to the flow rate, and this configuration is ideal in that respect.

(a) Posterior part. On the other hand, in the rear portion where the fin spacing is relatively wide, the overlap margin between the fins in the vertical direction is relatively small. Therefore, even if the fins are adjusted in the closing direction, they will not become smaller by the same proportion as the front part compared to before adjustment.

In the rear part, the proportion of culms and dust is relatively higher than that of paddy. Therefore, it is desirable to always allow a sufficient amount of water to leak and to have a sufficient sorting air so that the second and third items can be reliably sorted.

In other words, in the rear part, even if the chaff is adjusted according to the flow rate, it is better not to have a significant change in the leakage amount or screening air volume (even if it exceeds the appropriate adjustment limit and reduces efficiency), and this configuration also has the advantage of ideal.

In this way, the present invention is designed to improve handling in the threshing section of a combine, in which the handling barrel is mounted on a shaft in the handling chamber parallel to the direction of movement of the machine, and the oscillating sorting body is extended from the bottom of the handling chamber toward the dust removal side. The inclination of the chaf sheave fins installed horizontally on the swinging sorter can be changed freely so that the interval between the chaf sheave fins behind the dust inlet at the end of the body is wider than the interval between the chaf sheave fins in front of the dust inlet. Since it is installed and configured, the following effects can be achieved.

(1) Since the material to be sorted that falls onto the chaff sheave can be fed in a uniform state, a large amount of culm pieces, etc. do not fall from between the chaff sheave fins, and the sorting performance of the chaff sheave is improved. Can be done.

(2) By changing the inclination of the chaff sieve fin according to the condition of the grain to be threshed, sorting that is adapted to the situation can be performed more reliably than performance.

(3) Moreover, as the inclination of the chaff sheave fin changes, the rate of change in the sorting action differs between the front part, where there is a lot of paddy, and the rear part, where there are many dust and culm breaks. Although the sorting action can be switched, a relatively stable sorting action can be performed at the rear part.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Figure 1 is a side view of the combine harvester, Figure 2 is a side sectional view of the threshing section, and Figure 3 is a side sectional view of the threshing section.
The figure is a side view of the oscillating sorter, and Figure 4 is its plan view.
Fig. 5 is a side sectional view of the same, Fig. 6 is a perspective view of a part of Fig. 3, Fig. 7 is a side view thereof, Fig. 8 is a partially enlarged view of Fig. 5, and Fig. 9 is a partial perspective view of Fig. Showing part of the figure, the first
Figure 0 is a side sectional view of each chaff sheave fin, No. 11.
The figure is an exploded perspective view of the main parts. 1...handling room, A...oscillating sorting body, 2...feed pan, 3...cheap feeder.

Claims (1)

[Scope of utility model registration request] In the threshing section of a combine, the handling drum is mounted on a shaft in a handling chamber parallel to the direction of movement of the machine, and a swinging sorter is extended from the bottom of the handling chamber toward the dust removal side. Constructed by installing chaff sheave fins horizontally on the swinging sorter so that the interval between the chaff sheave fins behind the mouth is wider than the interval between the chaff sheave fins in front of the dust inlet and the inclination can be changed freely. A swinging sorting device characterized by: