JPH0582170B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a second reduction structure for reducing and reprocessing second grains sorted and collected in a threshing machine.

[Conventional technology]

The second grains collected by the threshing machine are generally thrown and returned to a handling chamber, a swinging sorting section, or a processing chamber via a thrower cylinder equipped with an oblique discharge path. be. (Unexamined Japanese Patent Publication No. 59-175818,
(Refer to Utility Model Application Publication No. 170431/1983 and Publication No. 121739/1988).

[Problem to be solved by the invention]

In this structure in which the second material is reduced using a thrower device, the flow reduction path in an oblique position is formed by the thrower tube, so when the amount of the second material is large or the water content of the second material is When there are many and heavy objects, the second object adheres and accumulates on the inner surface of the lower side of the path in the latter half of the feed path of the thrower cylinder, which tends to stall and cause clogging.

As a means to reduce such problems, it is effective to strengthen the throwing action of the second object by the thrower device. For example, increase the outer diameter of the thrower blade or increase the thrower rotation speed to increase the blade circumferential speed. However, if the circumferential speed of the thrower blade is increased, another problem will occur in which there is a greater possibility that excessive impact will be applied to the shedding contained in the secondary material and damage it. There was also a limit to increasing the circumferential speed.

The present invention has been made in view of the above-mentioned circumstances, and makes it possible to throw and return the second object with less occurrence of clogging without unnecessarily increasing the circumferential speed of the thrower blade. It is an object of the present invention to efficiently and reliably reprocess the second product during the above-mentioned reduction, thereby facilitating subsequent processing.

[Means to solve the problem]

The characteristic configuration according to the present invention is that the thrower cylinder for reducing the second material is provided with a processing material guide surface along the discharge locus by the thrower device for reducing the second material, and the second material is processed by forced rotation. A processing rotating body is provided, and processing teeth are provided protrudingly on the processing rotating body, and processing teeth are provided on the side wall of the thrower cylinder on the side provided with the guiding surface, and the processing teeth are provided on the side wall of the thrower cylinder on the side provided with the guiding surface, radially outward of the processing rotating body from the guiding surface. A bulging portion is formed and the outer end rotation locus of the processing tooth is located at a point where it intersects with an extended imaginary line of the processing object guiding surface.

[Effect]

According to the configuration of the present invention, by providing the processing rotating body that is forcibly driven and rotated in the middle of the thrower cylinder, the outer circumferential surface of the processing rotating body and the inner circumferential surface of the thrower cylinder corresponding to this outer circumferential surface are connected. A kneading action can be applied to the second reduced product, making it possible to perform a granulation process, and the driving rotational force of the processing rotor applies strong conveying force again to the second reduced product during reduction transportation. As a result, the second product is smoothly conveyed even at the end of the return path.

In addition, the processing rotor is expanded outward in the radial direction of the processing rotor than the processing object guide surface along the discharge locus where the second object is guided while sliding in contact with the processing rotor disposed portion of the thrower cylinder due to the throwing action of the thrower device. By forming a protruding bulge and positioning the processing teeth of the processing rotary body in a state that intersects with the extension line of the guide surface, the processing material is guided along the processing material guide surface and on the extension line thereof. The treated tooth acts reliably on the second material being ejected, and the second material slips through the gap between the inner peripheral surface of the thrower cylinder and the tip of the treated tooth of the processing rotor in an untreated state. can be prevented.

〔Effect of the invention〕

Therefore, the processing rotating body installed in the middle of the thrower cylinder not only performs the second granulation process, but also assists the throwing conveyance force by using the thrower blades at the bottom of the thrower cylinder. without giving excessive throwing action, with less clogging, and
Smooth and good second grain reduction treatment can be performed without damaging the grains.

Moreover, by rationally configuring the shape of the thrower cylinder, an appropriate gap (4 to 7 mm) is created between the inner circumferential surface of the throat cylinder and the tip of the processing tooth of the processing rotor, taking into account manufacturing and assembly errors, etc. ), but this will reduce the possibility that the second material will pass through the processing rotating body through this gap, and the second material will be able to act reliably on the second material to be loosened or single-grained. can be done efficiently.

〔Example〕

The second material processing structure of the threshing machine mounted on the combine harvester will be explained below. As shown in FIGS. 3 and 4, a reaping preprocessing section 1 and a control section 2 are installed side by side at the front of the machine, and a feed chain 3 and a handling barrel 4 are provided at the rear of the reaping preprocessing section 1. A threshing section 5 is provided, and a swing sorting section 7 is provided below the threshing section 5 for wind selection using the sorting wind from a winnowing machine 6.
The first grain conveying device 9 transports the grains from the oscillating sorting section 7 to the grain tank 8, and the second grain conveying device 10 returns the second grains from the oscillating sorting section 7 to the oscillating sorting section 7. A combine harvester is constructed by providing the following.

The second object processing structure will be explained. A thrower device 11 for flipping up the second product is provided at the conveyance end of the screw conveyor-type second product traversal device 10, and a grain pan 7A of the swing sorting section 7 removes the second product thrown up by the thrower device 11. A thrower tube 12 is provided to induce reduction. As shown in FIG. 1, this thrower cylinder 12 has a vertical position portion 12A above the thrower device 11 and a horizontal position portion 12A toward the swinging sorting unit 7.
B, and the thrower device 11 in the vertical position part 12A.
An upward route R1 is formed upward from the lateral position portion 12B, and a lateral route R2 is formed laterally from the terminal end of the upward route R1 at the lateral position portion 12B.

Then, the vertical posture portion 12A and the horizontal posture portion 12B
The processing rotary body 13
It is equipped with and configured. The rotating body 13 may be a simple drum-shaped member, but as shown in FIG. A rod-shaped receiving tooth 15 is provided on the inner surface of the thrower cylinder 12,
The treatment tooth 14 and the receiving tooth 15 have a structure that applies a strong treatment action. Note that the tip trajectories of the treated tooth 14 and the receiving tooth 15 overlap when viewed from the side. Further, the rotation speed of the thrower device 11 is 1200 rpm (circumferential speed 20 m/S), whereas the rotation speed of the processing rotor 13 is 800 rpm (circumferential speed 8 m/S). The treated tooth 14 may be a rod-shaped treated tooth 14a as shown in FIG.
It is also possible to take a form in which the rod-shaped treatment teeth 14a are used to loosen the lumps of straw, and the blade-shaped treatment teeth 14b are used to release the straw by alternately planting them on the treatment rotating body 13. The gap between the tip trajectory and the inner circumferential surface of the thrower cylinder 12 is kept at 4 to 7 mm.

Furthermore, the processing rotating body 13 is connected to the dust inlet 16 of the handling chamber 16.
It is coaxially provided at the end of the drive rotating body 17 that is rotationally driven via a drive mechanism (not shown) provided corresponding to A, and is connected to the respective rotating shafts 13A, 1.
Along with 7A, the rotating drum itself is also fixed together,
Drive sources can be shared. On the other hand, the drive rotating body 1
7 acts to improve the sorting performance in the swing sorting section 7 by adding a loosening effect to the waste straw discharged from the dust feeding port 16A.

As shown in FIG. 1, the storage portion 12C of the thrower cylinder 12 relative to the processing rotary body 13 has a bulge in which a part of the inner circumferential surface on the side of the processing object throwing trajectory by the thrower device 11 bulges outward. A portion 12a is provided, and the processing rotary body 13 is installed and configured such that the processing tooth tip locus of the processing rotary body 13 is located within this bulged portion 12a. That is, the processed material guiding surface 12b is attached to the side wall on the side provided with the processed material guiding surface 12b on the outside of the vertical position portion 12A of the thrower cylinder 12 where the second material is conveyed and guided by the throwing action of the thrower device 11. The bulging portion 12a is formed by bulging outward in the radial direction of the processing rotating body 13 beyond the extended imaginary line L of the processing tooth 13, so that the outer end rotation locus of the processing tooth 13 is aligned with the extended imaginary line L of the guiding surface 12b. They are located at an intersection.

Therefore, by directing the tip trajectory of the processing tooth 14 into the bulged portion 12a with respect to the second object sent along the inner circumferential surface of the thrower cylinder 12 in accordance with the rotational direction of the thrower device 11, The processing teeth 14 and the second object conveyance locus can be overlapped, and the processing action of the processing teeth 14 can be effectively utilized.

[Another example]

(a) As shown in FIG. 5, instead of the receiving teeth 15, the inner circumferential surface of the thrower cylinder 12 is formed into a rough surface 12b with unevenness, and together with the processed teeth 14, a kneading action is applied to the second material. Good too.

(B) As shown in Fig. 6 A and B, both the receiving teeth 15 and the processing teeth 14 are made into long plate shapes in the direction of conveying the second material, so that the kneading and kneading action area of both 15 and 14 can be lengthened. It is also possible to have a configuration that does this. The length of the receiving tooth 15 is the length of the plurality of treated teeth 14
Any material that can perform processing operations at the same time may be used.

(C) As shown in Figure 7 A, B, and C, the treated teeth 14
Alternatively, a plurality of them may be attached to the L-shaped base 18 and formed integrally.

[Brief explanation of the drawing]

The drawings show an embodiment of the second reduction structure of a threshing machine according to the present invention, FIG. 1 is a longitudinal cross-sectional side view showing a processing rotating body installed in the thrower cylinder, and FIG. Vertical rear view showing the processing rotor, 3rd
The figure is a schematic side view of the threshing machine, FIG. 4 is a plan view of the combine harvester, FIG.
B shows another embodiment of the treated tooth and the receiving tooth, respectively, A is a longitudinal side view showing the state in which they are attached to the processing rotor, B is an enlarged longitudinal sectional back view of the main part corresponding to A, and FIG. A, B, and C show different embodiments of the treated tooth, respectively. A is a longitudinal sectional side view showing the state in which it is attached to a processing rotating body, B is an enlarged vertical sectional rear view of the main part corresponding to A, and C is an enlarged vertical sectional rear view of the main part corresponding to A. It is a perspective view of a treated tooth. 11...Thrower device, 12...Thrower tube, 12
a...Bulging part, 12b... Processing material guiding surface, 13...
...Processing rotating body, 14...Processing tooth, L...Extended imaginary line.

Claims (1)

[Claims] 1 Processing rotation for processing the second material by forced rotation in the middle of the thrower cylinder 12 for second material reduction, which is equipped with a processing material guide surface 12b along the discharge locus by the second material reduction thrower device 11. A body 13 is provided, processing teeth 14 are provided protruding from the processing rotating body 13, and a processing material guiding surface 1 is provided on the side wall of the thrower cylinder 12 on the side provided with the processing material guiding surface 12b.
2b is formed to bulge outward in the radial direction of the processing rotary body 13, and the outer end rotation locus of the processing tooth 14 intersects with the extended imaginary line L of the processing object guide surface 12b. The second reduction structure of the threshing machine located.