JP2008228650A - Thresher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thresher preventing waste straw scattered from a waste straw-treating device from flying into a selection chamber, and enabling good selection to be carried out without blocking the flow of selection wind. <P>SOLUTION: The thresher is constituted as follows. Grain culms fed and sent by a feed chain 2 are threshed at a threshing cylinder 12 in a threshing chamber 10, and the threshed product is selected by a swinging selector 21 installed in the lower part of the threshing chamber 10, and a blasting fan 35. The selected waste dust is discharged from a waste dust opening 57 through a waste dust chamber 37 arranged at the upper part of the swinging selector 21. The waste straw from the feed chain 2 is cut by a cutter 43. A flexible cover body 51 for preventing the cut waste straw from invading into the selection chamber from the waste dust opening 57 is arranged between the cutter 43 and the waste dust chamber 37 so that the lower part may be turnable. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a threshing machine mounted on a harvester such as a combine, and more particularly to a threshing machine provided with a waste processing device that cuts waste after threshing finely and discharges it to a field.

  A threshing machine installed in a combine or the like is provided with a handling cylinder with a plurality of teeth handling teeth, a handling room for threshing grains from cereal straws, and selecting grains from threshing threshed in the handling room. Sorting room, grain tank for temporarily storing the selected grain, a pair of cutters with multiple rotating blades that rotate at high speed, and a waste processing device that shreds the waste and discharges it to the field. It has. Straw debris cut by the waste processing apparatus is discharged downward, but part of it is scattered at high speed toward the swing sorter and the Glen tank.

  When the straw scraps shredded by the waste processing device jump into the sorting chamber, the grain sorting efficiency by the swing sorting body decreases, so a guide is provided between the sorting chamber and the waste processing device. There has been known a threshing machine in which a plate is arranged to prevent waste from entering the sorting chamber (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2003-18913 (page 3, FIG. 3)

  However, since the guide plate disposed between the sorting chamber and the waste disposal apparatus is formed of an iron plate or the like, when the guide plate is disposed close to the sorting chamber, the sorting plate The flow of the sorting wind from the room is obstructed, and the sorting efficiency of threshing is reduced. Further, when the guide plate is mounted at a position that does not hinder the flow of the sorting air, there is a problem that the gap between the cutter and the straw becomes narrow and the straw dust is easily clogged.

  In view of the above circumstances, the present invention is a threshing machine capable of preventing the waste of dust scattered from the waste processing apparatus from jumping into the sorting chamber and performing good sorting without hindering the flow of the sorting wind. The purpose is to provide.

In order to achieve the object, the present invention according to claim 1 threshs cereals fed by a feed chain (2) in a handling cylinder (12) in a handling chamber (10), and is threshed. The cereals are sorted by a swinging sorter (21) and a blower fan (35) provided below the handling chamber (10), and the sorted dust is disposed above the swinging sorter (21). In the threshing machine (1), which is discharged from the dust discharge port (57) through the dust discharge chamber (37) disposed in the cutter and the waste from the feed chain (2) is cut by the cutter (43). ,
A cover body (51) for preventing the straw cut by the cutter (43) from entering the dust outlet (57) is disposed between the cutter (43) and the dust chamber (37). And
The cover body (51) is made of a flexible body and is supported so as to be able to swing downward.
The threshing machine is characterized by that.

In the present invention according to claim 2, the lower end of the cover body (51) is suspended up to the vicinity of the upper end position of the swing sorting body (21).
A threshing machine according to claim 1.

The present invention according to claim 3 has a space in which the dust can be dropped between the cover body (51) and the rear end of the swing sorting body (21).
It exists in the threshing machine of Claim 1 or 2.

  The reference numerals in the parentheses are for reference to the drawings and do not limit the present invention.

  According to the first aspect of the present invention, the cover body that prevents the waste cut by the cutter from entering the dust outlet is disposed between the cutter and the dust chamber, and the cover body includes: Since it is made of a flexible body and supported so as to be able to swing downward, it is possible to reliably prevent the straw waste scattered from the waste treatment apparatus from jumping into the sorting chamber. Moreover, the fall space of the straw waste cut | judged with the waste disposal apparatus can be ensured. Furthermore, since the lower part of the cover body is swung by the sorting air from the sorting chamber and the flow of the sorting air can be secured, good sorting can be performed.

  According to the second aspect of the present invention, since the lower end of the cover body is suspended to the vicinity of the upper end position of the swing sorter, the cover body is prevented from entering the sorting chamber while preventing the entry of straw debris. The lower part can be easily swung to ensure the flow of the sorting wind.

  According to the third aspect of the present invention, since there is a space where dust can fall from between the lower end position of the cover body and the rear end of the swinging sorting body, the waste generated in the sorting chamber is removed. Dust can be discharged without stagnation, and good sorting can be performed even when the cereal is wet.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 4 show an embodiment of the present invention. FIG. 1 is a perspective view of a threshing machine as viewed from the waste disposal apparatus side, and FIG. 2 is a side view showing the configuration of the threshing machine. 3 is a plan view showing the configuration of the threshing machine, and FIG. 4 is an enlarged view showing an attachment state of the cover body according to the present invention.

  As shown in FIG. 1, the threshing machine 1 includes a handling chamber 10 for threshing cereals transferred by the feed chain 2 on the machine frame 1 a, and a process disposed rearward from the side of the handling chamber 10. Chamber 15, sorting chamber 20 that sorts grains from the thresh that has been threshed in handling chamber 10 and processing chamber 15, waste transport chain 3 that transports the waste from which the grains have been threshed, and the waste A waste treatment device 40 that shreds waste conveyed by the conveyance chain 3, a grain tank 5 that temporarily stores the grain selected in the sorting chamber 20, and the grain tank 5 that stores the grain. And an auger 6 for discharging the grains. In FIG. 1, the waste disposal device 40 is shown rotated around the cutter support frame 41.

  As shown in FIGS. 2 and 3, in the handling chamber 10, a handling cylinder 12 in which a plurality of handling teeth 11 are erected is rotatably arranged, and threshing of cereals transferred by the feed chain 2 is performed. Do. A receiving net 13 is disposed below the handling cylinder 12 and configured to allow a part of the threshing threshed by the handling cylinder 12 to leak.

  In the processing chamber 15, a processing cylinder 16 having a plurality of blades standing upright is rotatably arranged to process cereals remaining in the waste transported by the feed chain 2 and the waste transporting chain 3. Do. A processing net (not shown) is arranged from the side of the processing cylinder 16 on the side of the sorting chamber 20 to the lower side, and a part of the cereal falling from the waste is allowed to leak. A part of the cereals processed by the processing cylinder 16 falls into the sorting chamber 20 from a dust feed port 17 formed on the processing chamber 15 side of the processing chamber 15. Further, a discharge port 15a formed at the rear end portion of the processing chamber 15 opens toward the dust chamber 37, and discharges dust such as straw dust. Dust discharged from the discharge port 15 a is discharged outside the machine through a drop space formed between the rear end portion of the swinging sorter 21 of the dust discharge port 57 and the cover body 51.

  The sorting chamber 20 has a rocking sorter 21, and the rocking sorter 21 has a non-hole transfer plate 23 fixed between a pair of rocking side plates 22 arranged at a predetermined interval. It is composed of a chaff sheave 25 composed of a plurality of fins that are swingably supported by the swing side plate 22 at a predetermined interval, and a plurality of racks arranged at a predetermined interval between the swing side plates 22. A Strollac 26 and a Glen Sheave 27 disposed on the swing side plate 22 so as to be positioned below the Chaff Sheave 25 are provided.

  Below the grain sheave 27, the most ridge 30 that accommodates the grain that has leaked the grain sheave 27 is disposed. The first screw 30 is provided with a first screw 31 for conveying the stored grain to the Glen tank 5 via a whipping screw (not shown). A second basket 32 is disposed below the Strollac 26 to accommodate the cereal grains that have leaked through the Strollack 26. A second screw 33 for reducing the stored cereal grains onto the non-hole transfer plate 23 is disposed in the second basket 32.

  A blower fan (a tang fan) 35 is disposed below the non-hole transfer plate 23 and blows a selection wind toward the grain sheave 27 and the chaff sheave 25. In addition, a blower fan 36 is disposed between the first rod 30 and the second rod 32 and blows the selected air toward the strolac 26. Note that the air volume of the sorting air blown out from the blower fan 35 and the blower fan 36 is automatically adjusted according to the amount of cereals thrown on the swinging sorter 21.

  A dust discharge chamber 37 is formed above the Strollac 26, and a suction dust discharge fan 38 is attached to the side surface thereof to suck in fine dust generated at the rear of the sorting and sorting body 21 and to remove the threshing machine. 1 is discharged to the rear of the blower. Relatively large straw waste is discharged out of the machine from the dust outlet 57 by the sorting air from the blower fans 35 and 36.

  The waste disposal device 40 is swingably supported via a support shaft 42 by a cutter support frame 41 erected on the rear part of the machine body frame 1a. A pair of cutters 43 are rotatably disposed inside the waste disposal apparatus 40, and a plurality of disc-shaped cutting blades 43a are disposed at predetermined intervals in the cutter 43. A switching plate 44 is rotatably disposed above the waste disposal device 40. When the switching plate 44 is rotated and the upper portion of the waste disposal device 40 is opened, waste can be thrown into the waste treatment device 40.

  Further, the waste processing apparatus 40 is formed with a discharge port 40 a for discharging straw waste cut toward the sorting chamber 20 and the glen tank 5. Accordingly, when the waste is thrown in from the upper part while the cutter 43 is rotating, the waste can be cut finely by the cutting blade 43a, and the cut straw waste is discharged from the discharge port 40a. While being scattered toward the sorting chamber 20 and the glen tank 5, it is discharged to the field.

  The fuel tank 45 is arranged in a space behind the grain tank 5 on the machine body frame 1 a so that a rear portion of the fuel tank 45 protrudes below the waste treatment device 40. By disposing the fuel tank 45 using the space below the waste disposal device 40, the capacity of the fuel tank 45 can be increased, and the workability is improved by extending the interval of fuel supply. be able to.

  As shown in FIGS. 1 to 4, the cover body 51 that covers the rear end portion of the dust exhaust chamber 37 is formed of a synthetic resin having flexibility (for example, tarpaulin, vinyl, rubber, etc.). The upper end of the dust removal chamber 37 is configured by a round pipe so that the lower end thereof is suspended to the vicinity of the upper end (terminal) position of the swing sorter 21. It is fixed with a bolt 55 to a bracket 53 fixed to a frame 52 connecting the side plates. The cover body 51 may be attached to the front end surface of the waste disposal device 40.

  By disposing the cover body 51 so as to be suspended, it is possible to prevent the straw debris scattered from the waste processing device 40 from entering the sorting chamber 20. In addition, since the cover body 51 is shaken, a sufficient distance between the cutter 43 and the cover body 51 can be secured, and the clogging of the cutter 43 can be prevented. Further, since the lower part of the cover body 51 swings rearward and the sorting air in the dust removal chamber 37 can escape, good sorting is performed without hindering the flow of the sorting air in the sorting chamber 20. be able to. Furthermore, even when the rocking sorter 21 is pulled out of the apparatus for maintenance or the like, it can be pulled out without removing the cover body 51, and workability is not deteriorated.

  Between the lower end portion of the cover body 51 and the rear end portion of the swing sorter 21, a dust discharge port 57 is formed for dropping the dust discharged from the rear end of the Strollac 26. Therefore, the dust can be discharged smoothly through the dust outlet 57, and good sorting can be performed even when the cereal is a wet material. Further, dust waste such as straw dust discharged from the discharge port 15a of the processing chamber 15 is discharged out of the apparatus through the drop space formed in the dust discharge port 57. It does not fall on the moving sorter 21, and the sorting efficiency in the swing sorter 21 is not reduced.

  The cover 56 covering the lower part of the sorting chamber 20 is formed of a flexible synthetic resin, and is suspended from the lower surface of the swinging sorter 21 so as to be positioned below the Strollac 26. The upper end is fixed.

  By disposing the cover body 56 so as to be suspended from the swing sorting body 21, it is possible to prevent straw scraps scattered from the waste processing apparatus 40 from entering the lower portion of the sorting chamber 20.

  The cover body 60 that covers the fuel tank 45 is formed of a flexible synthetic resin, and a plurality of slits (button holes, not shown) are formed at predetermined intervals on the periphery thereof. On the other hand, a frame (including a cutter stay or the like, not shown) erected at the rear end portion of the machine body frame 1a has a flange portion formed at the rear end and a predetermined interval so as to protrude rearward. A plurality of pins (buttons) 61 are erected.

  The cover body 60 is attached by hanging the slit on the pin 61. Therefore, the attachment and detachment of the cover body 60 can be performed manually without using a tool, and workability can be improved. Further, by attaching the cover body 60, it is possible to prevent the straw debris scattered from the waste processing apparatus 40 from jumping into the space between the glen tank 5 and the fuel tank 45, and the accumulation of the straw debris. This can improve the workability of maintenance work.

It is a perspective view of the threshing machine seen from the waste processing apparatus side. It is a side view which shows the structure of a threshing machine. It is a top view which shows the structure of a threshing machine. It is an enlarged view which shows the attachment state of the cover body by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thresher 2 Feed chain 10 Handling chamber 12 Handling cylinder 21 Swing sorter 35 Blower fan 37 Dust removal chamber 43 Cutter 51 Cover body 57 Dust outlet

Claims (3)

The cereals fed by the feed chain are threshed by a handling cylinder in the handling chamber, and the threshed threshing is sorted by a swinging sorter provided below the handling chamber and a blower fan and sorted. In the threshing machine, wherein the dust is discharged from the dust outlet through the dust chamber disposed above the swing sorter, and the waste from the feed chain is cut with a cutter.
A cover body that prevents the straw cut by the cutter from entering the dust outlet is disposed between the cutter and the dust chamber,
The cover body is formed of a flexible body and is supported so as to be able to swing downward.
Thresher characterized by that. The lower end of the cover body hangs to the vicinity of the upper end position of the swing sorting body.
The threshing machine according to claim 1. Between the cover body and the rear end of the rocking sorter, there is a space where dust can fall.
The threshing machine according to claim 1 or 2.

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