JPH03160923A - Threshing device - Google Patents

Abstract

PURPOSE:To make it possible to carry out good grading of grains regardless of kind of grain culms by linking means for detecting feed amount to threshing drum of grain culm with means for controlling grading air amount and providing a mechanism for changing and controlling increasing and decreasing degree of grading accompanied by increase and decrease of grain culms. CONSTITUTION:A means E for detecting feed amount to threshing drum of threshing grain culm based on displacement of holding rail 22A opposite arranged to feed chain and means F for controlling grading air amount are provided in a threshing device. Then the detection means E is linked with the means F for controlling grading air amount through a mechanical linking mechanism G in a state increasing and decreasing grading air amount in same direction according to increase and decrease of grain culms. A mechanism H for mechanically changing and controlling increasing or decreasing degree of grading air amount according to increase or decrease of grain culms is provided in a mechanical linking mechanism G.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a threshing device.

[Conventional technology]

The processed material that has been threshed by the handling barrel and leaked through the receiving net is sorted in the sorting section using grain pans, grain sieves, etc., and paddy with branches and dust particles that cannot pass through the receiving net are also collected through the dust outlet at the rear of the handling room. In other words, all the threshed material is subjected to the sorting action in the sorting section and is separated into those that leak to the collection section and those that are discharged, and the weight of grain to be threshed is As the number increases, naturally the amount of processed materials existing in the sorting section also increases.

Therefore, since the amount of processed materials leaking from the sorting section to the collection section is also influenced by the amount of culms, it would be preferable in terms of sorting performance if the sorting air in the collecting section could be changed according to the amount of processed materials. As an example of such a structure, one disclosed in Japanese Patent Application Laid-Open No. 1-206922 is known.

The above-mentioned known example is equipped with means for detecting the threshing weight and means for adjusting the selective air by changing the rotation speed of the winnowing machine.When the amount of culm increases or decreases, an electrical linkage mechanism via a control device is used to detect the threshing weight. The rotating speed of the winnowing machine was configured to be increased or decreased.

[Problem to be solved by the invention]

According to the prior art described above, the detection means is configured by detecting the thickness of the sandwiched grain culm layer in the feed chain, but it has been found that this causes the following disadvantages.

In other words, threshing equipment mainly threshes rice and wheat, but since the stalks of wheat are more easily crushed than rice, it is necessary to transport equal amounts of rice and wheat through a feed chain. Therefore, if the detection amount and sorting wind coordination adjustment is set for either rice or wheat, false detection will occur during the threshing of the other, and the sorting performance will be affected. It will fall.

The present invention aims to solve the above-mentioned disadvantages.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a means for detecting the amount of threshing husk sent to the handling barrel in a threshing device, and a means for adjusting the sorting air volume by a winnowing machine, and the amount of sorting air increases or decreases as the amount of husks increases or decreases. The detecting means and the sorting air adjusting means are linked to increase or decrease in the same direction, and a mechanism is provided to change and adjust the degree of increase or decrease of the sorting air as the grain weight increases or decreases. shall be.

[For production]

According to the above configuration, for example, when threshing wheat, the degree of increase or decrease of the sorting air relative to the amount detected by the detection means is adjusted to be greater than that when threshing rice, thereby corresponding to the actual amount of material to be processed in the sorting section. The degree of increase or decrease in the sorting air volume can be appropriately selected and set according to the type of the husk to be threshed, such that the sorting is performed at the selected air volume.

〔Effect of the invention〕

Therefore, according to the present invention, by configuring the change adjustment mechanism, it is possible to perform better sorting in a threshing device incorporating automatic sorting air control regardless of the type of culm.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 5, a threshing device (7) is mounted on the upper part of the fuselage (18) equipped with a crawler traveling device (17),
In addition, a reaping section (D) is attached to the front part of the machine body (l8), and a combine harvester is configured.

The reaping section (D) includes a triggering device (19), a cutting blade (20) that cuts the stock base of the culm, and a supply conveyance device (21) that conveys the harvested grain culm to the rear of the machine body. .

As shown in Fig. 4, the threshing device (Z) is connected to the threshing section (A).
, a sorting section (B), a recovery section (C), and a second product reduction section.

The threshing section (A) has a handling drum (2) mounted on a shaft in a handling room (1), and a receiving net (3) stretched along the lower side of the handling drum (2). The grain culm supported and conveyed by the chain (4A) is handled and processed by the handling cylinder (2), and the processed product is leaked and supplied onto the sorting section (B).

The sorting section (B) consists of a swinging sorting device (5) and a winnow (6) that sends sorting air to the swinging sorting device (5).

The swinging sorting device (5) has a frame (7) that can be driven swingingly.
Glen bread (8) and this grain bread (
8) A continuous grain sheave (9) is provided at the rear and lower part, as well as two upper and lower straw racks (to), (
11) are provided at the front and rear. Then, the treated material that leaked from the receiving net (3) and passed through the front grain pan (15) and the front straw rack (16) is collected in the grain pan (
8), and after being oscillatedly transferred to the rear grain sieve (9) while sorting by difference in specific gravity, it is oscillatedly transferred to the rear while being screened for leakage by the grain sieve (9), and released by falling from the rear end. On the other hand, the processed material discharged from the dust inlet (la) of the handling room (1>) is received by the upper straw rack (10),
While separating the leakage, it is oscillated to the rear and discharged to the lower straw rack (11).
The leakage is screened again and discharged from the rear end of the machine.
2) is a dust exhaust fan that discharges straw waste to the outside of the machine along with the sorting air.

The collection section (C) includes a top collection section (l3) that collects paddy that has leaked from the grain sieve (9), and a straw rack (13) that collects paddy that is released from the rear end of the grain sieve (9).
10). It consists of a secondary material collection section (14) that collects paddy with branches that leaked from (11).

The first product collecting section (13) is equipped with a first screw (13a) for conveying the collected first product to one side, and the second product collecting section (14) is equipped with a first screw (13a) for conveying the collected first product to one side. The bottom case (1
4b), and a second screw (14a) is provided at the bottom of the bottom case (14b) for conveying the collected second item to one side.

This threshing device has a feed chain (4A).
Means for detecting the amount of threshing husk sent to the handling cylinder (2) based on the displacement of the clamping rails (22A) arranged opposite to the
E), and a means (
F), and the detecting means (E) and the sorting air adjusting means (F) are connected through a mechanical linkage mechanism (G) so that the amount of screening air increases or decreases in the same direction as the amount of culm increases or decreases. A mechanism (H) is provided in the mechanical linkage mechanism (G) to mechanically change and adjust the degree of increase or decrease in sorting air as the amount of culm increases or decreases.

Here, the "amount fed to the handling cylinder" refers to the amount fed per unit time.

As shown in FIG. 1, the detection means (E) includes a guide pin (23) for supporting the support rail (22A) in a vertically movable manner, and converts the vertical movement of the guide pin (23) into a longitudinal movement. From the link to be converted (24), the selective air adjustment means (F) has an air outlet for discharging the selective air other than the sorting part (B) by the winnowing machine (6), that is, to the lower part of the fuselage (18). (25) and this exhaust port (25).
5) The lid body (26) that opens and closes is configured to be able to swing freely around a horizontal axis (P1) provided at its front part.

The linkage mechanism (G) connects the upper end of the link (24) and the lid 26) with a release wire (28) and a rod (29) via a spring (27), and a guide pin ( 23) rises, the lid body (26) also swings upward, and when the guide pin (23) descends, the lid body (26) also swings downward.

In other words, when the amount of shell culms increases, the amount of sorting air also increases, and when the amount of culms decreases, the amount of sorting air also decreases, and this is defined as an increase or decrease in the same direction.

And, in the linkage mechanism (G), specifically, the change adjustment mechanism (
H) is provided.

As shown in Figures 2 and 3, the change adjustment mechanism (H) is provided with an arm (30) that is rotatable around the fulcrum (P2) of the horizontal axis, and the end of this arm (3o) on the side opposite to the fulcrum. Rod (29
), and a spring ( 2
7) are pivotally connected at their lower ends.

The rotary piece (32) is rotatable about 180 degrees around the pin (3l) in a downwardly convex path, and is divided into a first position and a second position along the longitudinal direction of the arm (3o). ? 10 It is possible to change. In other words, the arm (30) is made up of two arm plates (30) that sandwich the rotating piece (32) from the left and right sides.
a), (30a) and a boss (30b), and the rotating piece (32) is bent on the opposite rotation fulcrum side in plan view U.
It is made of a letter-shaped plate material, and a pivot pin (33) fixed to the lower end of the spring (27) is removably pivoted to the pivot piece (32).

The pivot pin (33) is connected to both arm plates (30a), (3
It has a width that interferes with the arm plate (30
a) and (30a) are formed with two recesses (34) into which the pivot pin (33) is inserted.
When the user enters the recess (34A) on the distal end of the arm (30), the rotating piece (32) assumes the first position, and the pivot pin (33) engages the recess (34B) on the proximal end of the arm (30). When it comes to humans, it becomes the second posture.

In addition, the span (L) from the axis of the fulcrum (P2) of the arm (30) to the center of the pivot pin (33) is set so that it is 173 in the first posture in the second posture. This is in line with the fact that the compressive strength of the stems of rice is about 1/3 that of rice.

10 Therefore, when threshing rice, operate the rotating piece (32) to
At the same time, when threshing wheat, the rotary piece is operated to set the first position.

Note that by rotating the rotating piece (32) in a downward convex shape, the spring (27) functions as a so-called toggle spring, so the rotating piece (32) can be moved between the first and second positions without any separate parts. There is an advantage that it can be locked and maintained in both the second postures.

[Another example]

As shown in FIG. 6, the culm amount detection means (E) may be configured by taking out the swinging position of the supply conveyance device (2). That is, the supply conveyance chain (4B)
The displacement of the supply supporting rail (22B) that is paired with the clamping rail (22B) is converted into the amount of swing of the supply guide (35) to which the clamping rail (22B) is fixed.

The bracket (36) fixed to the swing fulcrum side of the lid (26) may be operated by the release wire (28).

Further, the detection means (E) may be a means for detecting the load using the rotation 14 torque of the handling cylinder (2) and estimating the culm amount from this, and the change adjustment mechanism (H) may be It may also be installed at certain locations.

Alternatively, the selected air volume may be changed and adjusted by changing the area of the suction port or changing the rotation speed of the winnowing machine.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the threshing device according to the present invention, and FIG. 1 is a configuration diagram showing a mechanical linkage mechanism, and FIGS. 2 and 3 are a cross-sectional side view and a partial cross-section showing the change adjustment mechanism, respectively. FIG. 4 is a bottom view, FIG. 4 is a side view of the threshing device, FIG. 5 is a side view of the combine harvester, and FIG. 6 is a structural diagram showing another embodiment of the mechanical linkage mechanism. (2)... Handling trunk, (6)... Karawini, (
E)...detection means, (F)...selective air adjustment means, (G)...mechanical linkage mechanism, (H)...
...Change adjustment mechanism.

Claims (1)

[Claims] Means for detecting the amount of threshing husk fed into the handling cylinder (2) (
E), and a means (
F), the detecting means (E) and the sorting air adjusting means (F) are linked so that the screening air volume increases or decreases in the same direction as the culm amount increases or decreases; Mechanism (H) that changes and adjusts the degree of increase/decrease in sorting air due to increase/decrease
A threshing device equipped with