JPH0513152Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention uses a grain sieve and a grain pan for waste leakage, which shake feed and sort out leakage from a handling room that has passed through a receiving net. This invention relates to a swing sorting device for a threshing machine provided with a grain sieve located behind a grain pan.

[The problem that the idea attempts to solve]

However, with the conventional structure described above, there is a possibility that the following problems may occur, and there is room for improvement.

In other words, when the amount leaking from the receiving net is small, it is possible to separate the treated material into upper and lower parts by gravity sorting with a grain pan, but the amount leaking from the receiving net is large. In some cases, the processed material tends to accumulate in the grain pan, and there is a high risk that the processed material will be sent to the grain sieve with insufficient specific gravity sorting.For this reason, especially when the amount of processed material is large, sufficient specific gravity separation may not be performed. Since the processed material is transferred to the grain sieve, there is a high risk that fine foreign matter such as straw waste may be mixed into the processed material leaking from the leakage hole of the grain sieve, so it is necessary to further improve the sorting accuracy. was desirable.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a swinging sorting device for a threshing machine that can perform a highly accurate sorting process when there is a large amount of material leaking from the receiving net. shall be.

[Means to solve the problem]

In order to achieve the above object, the swing sorting device for a threshing machine according to the present invention has the above-mentioned structure, and a chaff sheave is disposed between the receiving net and the grain pan located below the receiving net. At the same time, a plurality of fixing members are installed between the left and right swing frames of the chaff sheave at appropriate intervals in the swing feeding direction so as to form slit-shaped leakage passage paths, and each of the above-mentioned A rotary member is installed at the lower end of the fixed member so that the rotating member elastically rotates depending on the weight of the leaked material, thereby opening each of the leaked material passing paths in accordance with the weight of the leaked material. It is characterized in that it is attached in a state where it is elastically biased toward the side.

The functions and effects of this characteristic configuration are as follows.

[Effect]

That is, since the chaff sieve is provided between the receiving net and the grain pan, the oscillating sorting is also performed in the chaff sieve, and the processed material that leaks from the chaf sieve to the grain pan is carried out in the grain pan. In the chaff sheave, the straw waste is mainly separated into relatively large straw waste and relatively small grains with high specific gravity, and as the chaff sheave swings, the large straw waste is attached to the upper edge of the slit-shaped fixing member. The grains will be transported backwards while riding on top of the tank, and the grains will leak into the grain pan through the leakage path of the chaff sieve. Therefore, we decided to use a chaff sieve to separate the leakage from the receiving net into relatively large pieces of straw and other waste, and then send each of them backwards using the chaff sieve itself, while sorting them by specific gravity using a grain pan. As a result, even when the amount of material leaking from the receiving net is large, the amount of material leaking into the grain pan can be reduced, and therefore specific gravity separation in the grain pan can be performed satisfactorily.

Then, the processed material is transferred to the grain sieve after being subjected to specific gravity separation in the grain pan, so the grain layer is mainly exposed to the leakage surface of the grain sieve, and the straw waste etc. transferred to the rear by the chaff sieve is transferred to the grain sieve. This prevents the straw waste from coming into contact with the leakage surface of the grain sieve when it falls onto the processed material transferred from the grain sieve to the grain sieve, thereby suppressing the straw waste from being mixed into the leakage material.

Furthermore, leakage from the receiving net is temporarily prevented from leaking in the leakage material passage path of the chaff sheave by a rotary member that is elastically biased to block the path, so it shakes in the blocked state. As a result of the dynamic sorting force, relatively large pieces of straw tend to run over the upper edge of the fixed member and be transported, and are easily separated, and when the amount of leakage increases, the load from the leakage causes the waste to be recycled. The movable member swings to open the leakage passage, allowing the processed material containing a large amount of grain to leak into the grain pan.

[Effect of idea]

Therefore, the treated material from the receiving net is separated into comparatively large straw waste and other materials by the chaff sieve, and the former is transported to the rear by the chaff sieve, while the latter leaks into the grain pan and is collected by this grain pan. Even if there is a large amount of material to be processed as it is transported to the rear while being sorted by specific gravity, the amount of leakage into the grain pan can be reduced by the amount transferred by the chaff sieve. We have made it possible to perform sufficient sorting, and the processed material transferred from the grain pan to the grain sieve faces the leakage surface, so the sorting accuracy is even higher, and even when the amount of processed material increases, it can be sorted with high precision. I was able to do this.

〔Example〕

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

FIG. 2 shows a schematic configuration of the threshing machine. The thresher includes a handling chamber 1 and a sorting chamber 2 below the handling chamber 1. In the handling room 1, there is provided a rotary handling cylinder 4 that threshes grain culms supplied by the feed chain 3, and along the lower outer periphery of this handling cylinder 4, there is a receptacle for leakage of processed material. A net 5 is set up. In addition, in the sorting room 2, there is a first grain sieve 6 for shaking and sorting the leakage from the receiving net 5, and a grain sieve 6 for transporting the receiving net 5 to the end of the handling room without leaking. Two-stage stroke racks 7, 7 that oscillately feed and sort the processed material that falls from the opening 1a after the processing.
A swinging sorting device A is provided which is installed and fixed between a pair of left and right swinging frames 8, 8. At the bottom of the sorting chamber 2, there is a first material collection section 9 that collects and carries out the first material leaking from the grain sieve 6, and a straw rack 7 that collects and transports the first material leaking from the grain sieve 6, and a straw rack 7 that collects and transports the waste material that has fallen beyond the terminal end 6a of the grain sieve 6. A second object collecting section 10 is disposed at the front and rear for collecting fallen objects from the vehicle and returning them to the handling room 1. Further, in the sorting chamber 2 between the grain sieve 6 and the stroller rack 7 and both the collecting sections 9 and 10, there are provided a winnower 11 for blowing sorting air, a dust suction fan 12 for sucking and discharging floating garbage, etc.

As shown in FIG. 2, the grain sheave 6 is a grain pan 13 whose both ends are fixed to the left and right swing frames 8, 8.
It is installed at the end of the swing feed. and,
Between the receiving net 5 and the grain bread 13, the grain bread 1
A chaff sheave 14 is provided that covers the upper part of the grain pan 13 and spans the left and right swing frames 8, 8 to swing together with the grain pan 13.

As shown in FIG.
Plural pairs of plate-like members 1, with 4a and 14b as one pair
4a and 14b are arranged at appropriate intervals in the swing feeding direction. And one member 14
a is fixed to the swing frame 8 in an inclined state, and between these adjacent fixed members 14a, there is a receiving net 5.
A passage route R for leakage from the handling room 1 is formed. Further, the other plate-like member 14b is rotatable about the lower end P of each fixed member 14a between a position where the leakage passage route R is closed and a position where the route R is opened. It is installed. Furthermore, this rotating member 14b and the fixed member 14
A spring 14c that biases the rotating member 14b toward the closing side of the path R is provided between the rotary member 14a and the rotary member 14b.

In other words, if there is a large amount of leakage from the handling chamber 1 that has passed through the receiving net 5, the weight of the leakage will cause the rotating member 14 to
b is rotated in the direction to open the leakage passage route R, and on the other hand, when the amount of leakage is small, the rotating member 14b closes the leakage passage route R by the biasing force of the spring 14c. The leakage passage route R is automatically adjusted to the opening degree according to the weight of the leakage, and if the amount of leakage is large, the leakage will be rotated. The structure is such that dynamic feeding is performed by both the grain pan and the chaff sheave.

[Another example]

In implementing the present invention, the fixing member 14a
The number of rotating members 14b and their mounting structure can be changed as appropriate. For example, in the previous embodiment, a spring 14c was provided to urge the rotating members 14b toward the path R closing side. This spring may be omitted and the rotating member 14b itself may be formed from a plate spring. Further, the present invention can be applied to various types of threshing machines, such as a threshing machine mounted on a combine harvester and a stationary threshing machine.

[Brief explanation of drawings]

The drawings show an embodiment of the swing sorting device for a threshing machine according to the present invention, and FIG. 1 is a partially enlarged sectional view of a chaff sheave, and FIG. 2 is a schematic sectional view of a threshing machine to which the present invention is applied. 8... Swing frame, 14a... Fixed member, 14b...
...Rotating member, R...Leakage passage route.

Claims (1)

[Scope of Claim for Utility Model Registration] The first leakage grain sieve 6 and the grain pan 13, which oscillately feed and sort the leakage from the handling room 1 that has passed through the receiving net 5, and the grain pan 13 are connected to each other. In the swinging sorting device of a threshing machine located at the rear, a chaff sheave 14 is disposed between the receiving net 5 and the grain pan 13 located below the receiving net 5, and the chaff sheave 14 is , a plurality of fixing members 14a are installed between the left and right swing frames 8, 8 so as to form slit-shaped leakage passage paths R at appropriate intervals in the swing feeding direction, and each of the above-mentioned fixing members A rotary member 14b is provided at the lower end of the member 14a so that the leakage passage path R becomes an opening degree corresponding to the weight of the leakage by elastic rotation depending on the weight of the leakage. A rocking sorting device for a threshing machine that is installed with elastic bias on the route blockage side.