JPH10248370A - Thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a thresher improving re-selectability by providing a fan hitting a second processing matter returned to a carrying starting tip part and generating an air flow flowing along a carrying direction on a crocking and selecting device so as to reduce a grain loss. SOLUTION: The thresher reselecting the second processing matter by returning to the carrying starting tip part of the rocking and selecting part 7 is provided with the fan 21 such as a crossing flow fan hitting the second processing matter returned to the carrying starting tip part and generating the air flow flowing along the carrying direction on the rocking and selecting device 7. In addition it is desirable to divide the carrying upper-side part of the device 7 into a main selecting part for select-processing a processing object leaking down through a receiving net from a treating room and a sub-selecting part select-processing the second processing object from the fan 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing machine mounted on a combine or the like, and more particularly to a threshing machine which is configured to return a second processed material to a transport start end of an oscillating sorting device and re-sort the same. About.

[0002]

2. Description of the Related Art In this type of conventional threshing machine, the second processed material is returned directly to the transport start end of an oscillating sorter.

[0003]

However, according to the above conventional technique, when the second processed material contains a large amount of water (hereinafter referred to as a high water content), it is possible to perform the re-sorting satisfactorily. It was difficult. That is, as a mode of returning the second processed product to the transport start end, a mode in which the second processed product is lifted upward from the second processed product recovery unit, and the lifted second processed product is flipped forward and returned to the transport start end. is there. In the case of this return mode, if the second processed material is a high moisture substance, when the repelled second processed material hits the front wall of the threshing machine, it bounces back and does not fall to the transport start end, and the front wall does not fall. To the front wall of the second processed material, which accumulates on the front wall, and when the accumulation progresses into a large lump, it falls to the transport start end. Will be. In addition, since the water acts synergistically to adhere the second processed products to each other, in the rocking sorting, it is not possible to disperse such a massive second processed product efficiently and disperse well. Although the second processed product was returned to the transport start end, it could not be sufficiently sorted, and as a result, the amount of grain loss that the grain was discharged outside the machine was likely to increase. .

[0004] It is an object of the present invention to reduce grain loss even when the second processed product is a high moisture substance.

[0005]

The features, functions and effects of the first aspect of the present invention are as follows.

[Features] A threshing machine configured to return the second processed material to the transport start end of the swing sorting apparatus and re-sort the same, wherein the second processed material returned to the transport start end is hit. And a fan that generates an airflow that flows along the transport direction is provided on the swing sorting device.

[0007] According to the first aspect of the present invention, the second processed material returned to the transport start end is hit by a fan, so that the second processed material is a high-moisture material and the second processed materials have a high water content. Even if it adheres, the second processed material is dispersed and returned to the transport start end, and since it is prevented from adhering and depositing on the front wall, the intended re-sorting is performed efficiently and reliably be able to.

[0008] In addition, simultaneously with applying a blow to the second processed material, an airflow flowing along the conveying direction is generated on the rocking sorting device, and the second processed material returned to the rocking sorting device is returned. Since light straw debris is blown off, that is, airflow sorting is performed, the re-sorting performance can be further improved.

[Effects] Therefore, according to the first aspect of the present invention, even if the second processed product is a high-moisture material, the re-sorting performance for the second processed product is improved, and the grain loss is reduced. Now you can do it.

According to the second aspect of the present invention, the features, actions,
The effects are as follows.

[Features] In the features of the first invention,
In that the fan is a cross flow fan.

[Operation] The cross-flow fan sucks and discharges the gas over substantially the entire width in the axial direction. Focusing on the above points, in the second aspect of the present invention, since a cross flow fan is provided as a fan, by setting the axial direction of the cross flow fan to the left and right direction with respect to the feed direction by the swing sorting device, Even if the return position of the second processed product returned to the transport start end varies in the left-right direction, the second processed product can be reliably taken into the fan and hit.

[Effects] Therefore, according to the second aspect of the present invention, it is possible to improve the dispersion performance of the second processed material.

According to the third aspect of the present invention, the features, actions,
The effects are as follows.

[Features] In the features of the first and second aspects of the present invention, the main sorting portion of the swing sorting device, which sorts the processed material that has leaked from the receiving net from the handling room, to the upper side of the transporting device. And a sub-selection unit that sorts the second processed product from the fan.

[Operation] As a mode of returning the second processed material to the transport start end, a mode of returning the second processed product to a portion of the transport start end where the processed material leaking from the receiving net from the handling chamber falls may fall. It is considered possible, but in this case, the processed material from the handling room with a large amount of grain is mixed with the second processed material with a lot of straw waste, and the sorting performance for the processed material is reduced, and the overall sorting performance is reduced. descend. Paying attention to the above points, according to the third aspect of the present invention, the upper hand side portion of the swing sorting device is divided into a main sorting portion and a sub sorting portion, and the receiving net is leaked from the handling room. The processed material is sorted in the main sorting unit, and the second processed material from the fan is sorted separately in the sub-sorting unit separately from the processed material. In addition to preventing a decrease in the sorting performance of the processed material, the sub-selecting unit can have a structure suitable for reprocessing the second processed material.

[Effects] Therefore, according to the third aspect of the present invention, the second sorting object is returned to the transport start end of the swing sorting device and re-sorted, but the leakage from the handling room through the receiving net is achieved. It is possible to maintain good sorting performance for the processed material, and to further improve re-sorting performance for the second processed material.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A threshing machine mounted on a combine or the like, as shown in FIG. 1 and FIG. 3, drives and rotates a grain stem conveyed backward by a feed chain 1 around a longitudinal axis P. A handling room 3 for handling using the handling cylinder 2 is provided, and below the handling room 3, processing objects leaking from a receiving net 4 provided on an outer peripheral portion of the handling cylinder 2 are sorted out. It has a structure in which the sorting unit 5 is arranged.

As shown in FIG. 2, the sorting section 5 reciprocates to sifter the processed material while oscillating and transferring the processed material to the rear, and removes the straw waste from the dust discharge port 6 at the rear end. Sorting device 7 for discharging to the hopper, Karamin 8 for supplying the sorting wind directed backward to the swing sorting device 7, and the first thing (cereal) that is sorted and leaked by the swing sorting device 7 is collected. And a screw-conveying first-item collecting section 9 for conveying to a tank (not shown);
A second processed material collection unit 10 for collecting the second processed material, a dust exhaust fan 11 for sucking dust from above the swing sorting device 7 and discharging the dust outside the machine, and a swing sorting of the collected second processed material A return means is provided at the transport start end of the device 7 for returning.

The swing sorting device 7 receives the processed material from the receiving net 4 and the second processed material from the reducing means and oscillates and transports them to separate the front grain pan 1 into grains and straw chips.
2, a chaff sheave 13 for roughly sorting while swingingly transferring the processed material from the front grain pan 12 and the receiving net 4;
A grain sieve 14 for sifting the sorted material leaked from the chaff sheave 13 into kernels and a second treated material while oscillating and transferring the swarf waste from the chaff sheave 13 to the dust outlet. A straw rack 15 for discharging from the machine 6 to the outside is provided in a swinging-driven sorting case 16.

The sorting case 16 is supported via a guide 16a and a roller 16b so as to be movable along a diagonal path in which the front portion is positioned rearward and upward, and the rear portion is supported via a drive crank mechanism 16c. Thus, the drive crank mechanism 16c is driven to swing. And the front grain pan 12, chaff sieve 1
3. The swing transfer by the grain sheave 14 and the straw rack 15 is performed by the drive swing of the sorting case 16.

The first object recovery unit 9 includes the grain sieve 1
4, that is, arranged so as to collect the grains filtered and filtered by the grain sieve 14, and the second product recovery unit 10 is configured to collect the second processed product from the grain sieve 14 and the second processed product from the straw rack 15. It is arranged to collect the second leaked material.

As shown in FIGS. 2 and 3, the sorting section 5 has a width that protrudes to one side of the left and right sides of the handling room 3, and the swing sorting device 7 is provided immediately below the handling room 3. A main sorting unit 7A for sorting and processing the processed material leaking from the receiving net 4 and a second processed material sent from the handling room 3 to one of the left and right sides and sent through the reducing means; It is divided in the left-right direction into a sub-sorting section 7B for re-sorting. A plurality of straw rack members 17 are provided on the front grain pan portion of the sub-sorting section 7B at intervals in the left-right direction.

The reduction means includes a screw-type transfer device 18 for transferring the second processed material in the second processed material recovery unit 10 to one of the left and right sides, and discharges the second processed material conveyed by the screw type transfer device 18. The screw-type lifting device 19, and the second processed material, which is attached to the upper end of the screw shaft 19a of the lifting device 19 and is integrally rotated with the screw shaft 19a, is transported by the sub-sorting section 7B. A supply blade 20 is provided at the start end to repel and supply.

The threshing machine applies a blow to the second processed material returned to the transport start end of the sub-sorting section 7B by the reducing means, and sorts and flows on the sub-sorting section 7B in the transport direction. And an auxiliary fan 22 that uses a cross flow fan to supply an air flow for sorting to the processed material roughly sorted by the chaff sheave 13. The fan 21 is a cross-flow fan having a length in the axial direction over the entire width of the sub-selection unit 7B, and as shown in FIG. 4, receives the second processed material repelled and supplied by the reducing means together with air. Inlet 21
a, and a discharge port 21b is formed so as to discharge an airflow downward and rearward, and the blade 21c of the impeller 21A strikes the second processed material passing with the air. The impeller 21 is supported over a side plate and a plate-shaped bracket connected to the front wall. The shaft of the impeller 21 protrudes outside the machine, and an input pulley 21B is mounted on the protruding shaft portion.

[Alternative Embodiment] In the above embodiment, the swing sorting device 7 is divided into the main sorting unit 7A and the sub-sorting unit 7B.

[Brief description of the drawings]

FIG. 1 is a longitudinal side view of a threshing machine.

FIG. 2 is a cross-sectional plan view of the threshing machine.

FIG. 3 is a longitudinal sectional front view of a main part of the threshing machine.

FIG. 4 is a longitudinal sectional side view of a main part of the threshing machine.

[Explanation of symbols]

 3 Handling Room 4 Receiving Net 7A Main Sorting Unit 7B Secondary Sorting Unit 7 Swing Sorting Device 21 Fan

Claims (3)

[Claims] 1. A threshing machine configured to return a second processed material to a transport start end of an oscillating sorting device and to re-sort the second processed material, wherein a blow is applied to the second processed material returned to the transport start end. A threshing machine provided with a fan that generates an airflow that flows along the conveying direction on the swing sorting device while being provided. 2. The threshing machine according to claim 1, wherein said fan is a cross flow fan. 3. The part on the upper side of conveyance of the swing sorting device,
The threshing machine according to claim 1 or 2, wherein the threshing machine is divided into a main sorting unit for sorting and processing the processed material leaking from the receiving net from the handling room and a sub-sorting unit for sorting and processing the second processed material from the fan. .