JP2008178303A - Threshing apparatus for combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a threshing apparatus for a combine harvester, enabling efficient carrying out of a combine-harvesting work, without causing waste straw cloggings, even in a harvesting work for varieties producing a large quantity of waste straw or in their growing environment. <P>SOLUTION: The threshing apparatus for a combine harvester comprises a threshing section 2 that functions to thresh rearwardly conveyed reaped grain culms by a threshing cylinder 3; an exhaust dust treatment section 18 that functions to rearwardly convey a threshed product, while shredding it, after receiving it, by the shredding teeth 20 of an exhaust dust treatment cylinder 19 in parallel with the threshing cylinder 3; and a second tailings treatment section 25 that functions to treat the so-called "second tailings" that run through a winnower 9, after being subjected to the treatment teeth 28 of a second tailings treatment cylinder 26, integrated with the exhaust dust treatment cylinder 19. In this threshing apparatus, the exhaust dust treatment cylinder 19 has a constitution, wherein the diameter is equal to that of the second tailings treatment cylinder 26, and a treatment member 20 is arranged in a spiral form, where the outer diameter of the treatment member 20 is larger than that of the treatment teeth 28 of the second tailings treatment cylinder 26. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a combine threshing apparatus including a threshing unit, a dust removal processing unit, a wind selection unit, a second processing unit, and the like.

As shown in Patent Document 1, the threshing device for a combine that includes a threshing unit, a dust removal processing unit, a wind selection unit, and a second processing unit is configured to thresh the harvested cereal that is sent later by the threshing unit using its handling cylinder. Then, it is sent to the Glen tank through the wind selection unit, and during that time, the dust removal processing unit processes the post-threshing object to be processed and sends it later, and the second processing unit includes the reduced grains that have passed through the wind selection unit. Process the second thing.
Japanese Patent No. 3146924

  However, in the threshing section, depending on the variety and growth environment, a large amount of swarf may be generated. There is a problem that the work efficiency is lowered because it must be interrupted.

  The problem to be solved is a threshing device for a combine that can improve the work efficiency of the combine by avoiding the clogging of the waste, even when harvesting about varieties and growing environments that produce a large amount of the waste. It is to provide.

  The invention which concerns on Claim 1 is a threshing part (2) which thresh-processes the harvested cereal straw later sent by a handling cylinder (3), and the to-be-processed object after a threshing process from the rear-end part of this threshing part (2) And a dust removal processing part (18) which is processed and processed by the treatment member (20) of the dust removal treatment cylinder (19), and a second treatment cylinder (26) integrated with the dust removal treatment cylinder (19). In the threshing apparatus for a combine comprising a second processing unit (25) for processing the second product after sorting through the wind selection unit (9) by the processing member (28), the dust removal processing cylinder (19) is: The second processing cylinder (26) is formed to have the same diameter and the processing member (20) is arranged in a spiral shape. The outer diameter of the processing member (20) of the dust removal processing cylinder (19) is the second. It is characterized by being formed larger than the outer diameter of the processing member (28) of the processing cylinder (26).

  According to a second aspect of the present invention, in the configuration of the first aspect, the processing member (20) is formed by a continuous spiral plate.

  According to a third aspect of the present invention, in the configuration of the second aspect, the processing member (20) is a spiral plate body within a range facing the communication portion from the threshing portion (2) to the dust removal processing portion (18). The outer peripheral portion is formed in an uneven shape.

According to the first aspect of the present invention, transfer means having a large accommodation volume is formed by the processing teeth made of a transfer body having a large outer diameter of the dust removal processing cylinder. Therefore, even when a large amount of swarf is produced depending on the variety and growth conditions, it is possible to avoid clogging of the swarf and to harvest the stalk while running the combine at high speed, improving the efficiency of the harvesting and threshing work. Can be made.
It is possible to operate efficiently and secure the harvest quality.

  In addition to the effect of the invention of the first aspect, the invention of claim 2 improves the transfer capability and the processing capability of the object to be processed by making the processing member 20 a continuous spiral plate, and harvesting and threshing The work efficiency can be improved.

  In addition to the effect of the invention of claim 2, the invention of claim 3 transports swarf entangled in the irregularities on the outer periphery of the spiral plate provided in the dust removal treatment cylinder 19, so that threshing The object to be processed can be effectively drawn into the dust removal processing unit 18 from the unit 2, and the clogging in the threshing unit 2 can be reduced, and the ability of the mowing and threshing operation can be improved.

Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.
First, an outline of the threshing apparatus will be described. 1 to 3 are a longitudinal sectional view of a threshing device according to a threshing portion axis position, a horizontal sectional view of the threshing device according to a threshing portion axis position and a dust discharging portion axis position, and a rear view of the threshing device.
The threshing apparatus 1 includes a feed chain 1a (FIG. 2) that feeds the harvested cereal rice cake along one side of the combine (left side in the illustrated example), and appropriately stores the grains stored by the harvesting operation on the other side. A hopper 1b to be packed is arranged, and a hook cutter 1c is attached to the rear end portion to constitute the rear part of the combine body. The structure of the threshing apparatus 1 is provided with the threshing unit 2 provided with the feed chain 1 a on the upper side, the wind selection unit 9 on the lower side, and the second processing unit 25 and the dust processing unit 18 on the other side of the threshing unit 2. Etc. are arranged.

  In the threshing part 2, a handling cylinder 3 is mounted by a handling cylinder shaft 4. The handling cylinder shaft 4 is mounted on the start side plate 5 and the threshing end side plate 6. The lower side of the handling cylinder 3 is surrounded by a handling net. 8 is an air blower, 9 is a wind selector, 10 is a swing selector that swings in the air blowing direction of the fan 8, 11 is a transfer shelf at the start of the swing selector 10, and 13 is grains and sawdust. 14 is a stroller for transporting sawdust, 15 is a first conveyor, and 16 is a second conveyor.

  The end of the threshing unit 2 is provided with a dust processing unit 18 in communication therewith. The dust removal processing unit 18 is provided with dust treatment teeth (processing members) 20 on the outer peripheral surface of the dust removal treatment cylinder 19 parallel to the handling cylinder 3, and the lower side of the dust treatment cylinder 19 is surrounded by a treatment net 21. By doing so, a dust disposal chamber is formed. This dust removal processing chamber has its start end faced to the side of the terminal end of the threshing portion 2 in plan view and communicates with the communication port 23. A dust exhaust port 24 is formed at the end of the dust exhaust processing chamber, and the dust exhaust port 24 faces the position above the end of the sheave 13 of the swing sorting unit 10. A discharge guide bar 21a is provided from the rear end of the processing net 21 so as to protrude obliquely rearward on the dust outlet 24 side.

  Further, the second processing cylinder 26 of the second processing unit 25 is integrally provided on the same axis as the dust removal processing cylinder 19. The second processing unit 25 processes the second product collected and supplied by the second lifting cylinder 27 for returning the second product connected to the terminal end of the second conveyor 16. The dust processing cylinder 19 is formed to have a smaller diameter, and a second processing tooth (processing member) 28 is provided on the outer peripheral surface of the second processing cylinder 26. To form a second object processing chamber.

  About the whole operation | movement of the said threshing apparatus 1, if a grain mash is supplied to the threshing part 2 by the feed chain 1a, it will be threshed by the rotating barrel 3 in the threshing part 2, and the threshed grain will be rocked and sorted from the handling net. It falls on the transfer shelf 11 of the unit 10, is transferred by the transfer protrusion of the transfer shelf 11, reaches the sheave 13 of the swing sorting unit 10, and is debris generated by the swinging sheave 13 and the air blown from the air blower 8. The grain is separated, and the grain falls from the gap between the sheaves 13 and is taken out from the conveyor 15 to the outside of the machine. Further, the threshing object to be processed that does not fall from the handling net enters the dust disposal chamber of the dust disposal section 18 through the communication port 23 at the end of the threshing section 2 and is collected by the dust disposal teeth 20 of the rotating dust collection cylinder 19. The processed grains fall below the processing net 21 and reach the sheave 13. The shavings and the like that are wind-selected by the sheave 13 and the wind selection unit 9 and do not fall from the processing net 21 are discharged. It falls from the dust mouth 24, is wind-selected on the Strollac 14, and the grains in the sawdust fall, and the sawdust is discharged out of the machine.

  In this case, since the dust removal processing part 18 is provided in the side part of the handling cylinder 3 below the handling cylinder axis | shaft 4, a dust discharged material will enter into the dust removal processing part 18 efficiently, and will be processed. That is, the threshing in the threshing section 2 tends to gather obliquely downward with respect to the handling cylinder shaft 4 due to the action of gravity and the centrifugal force that rotates together with the rotation of the handling cylinder 3. By arranging the dust removal processing unit 18 on the side of the body 3, the supply to the dust removal processing unit 18 is made smooth. Since sawdust does not fall through the gap of the sheave 13, it moves to the discharge side by swinging of the swing sorting unit 10 and blowing air by the blower 8 and sucks dust and wastes at the end side of the wind selector 9. The dust that is sucked out by the dust exhaust fan 61 and not sucked by the suction dust exhaust fan 61 reaches the Strollac 14, and the waste that does not fall from the Strollack 14 is discharged out of the machine.

  Further, the cut pieces of the ears, the branch leaf attached grains and the like that have fallen due to the swing of the swing sorting unit 10 are collected by the second conveyor 16, and the second processing unit 25 is moved from the terminal end of the second conveyor 16 by the second lifting cylinder 27. To the second product processing room. The second processing unit 25 sends the second product to the start end side of the threshing unit 2 by the second product processing tooth 28 of the rotating second processing cylinder 26 and processes it by the second product processing tooth 28 while feeding it. Of these grains, the grains fall below a second processing net (not shown), reach the swing sorting section 10, are wind-selected by the wind selection section 9, and do not fall from the second processing net. Falls from the discharge port 46 onto the transfer shelf 11 of the swing sorting unit 10 and is again sorted by swinging and wind. In this case, since the second processing unit 25 returns the second item to the transfer shelf 11 of the swing sorting unit 10, the sorting performance can be improved.

Next, the dust removal process part 18 of the threshing apparatus 1 of the said structure is demonstrated in detail.
The dust removal treatment cylinder 19 of the dust removal treatment unit 18 is formed to have the same diameter as the second treatment cylinder 26 and the transfer body in which the dust removal treatment teeth 20 are arranged in a spiral shape, and the outer diameter thereof is the second treatment unit. The outer diameter is larger than that of the 25 treatment teeth 28, for example, three times the outer dimensions. For the dust removal treatment teeth 20 as the transfer body, a substantially continuous spiral material is applied, and in this case, the outer diameter of the spiral plate body has a larger diameter than the others in the range facing the communication port 23 with the threshing section 2. The uneven-shaped different-diameter portion 20a is formed.

  In this manner, the dust removal treatment cylinder 19 is formed to have the same diameter as the second treatment cylinder 26, and a large storage volume is secured by the dust removal treatment teeth 20 having a large outer diameter on the outer periphery thereof. By arranging in a spiral, the maximum transportability can be ensured with a simple configuration. Therefore, even when a large amount of swarf is produced depending on the variety and growth conditions, the harvesting operation can proceed without causing clogging of the swarf, so that the combine operation can be performed efficiently. Moreover, the threshing part 2 is formed by forming the dust removal treatment teeth 20 of the dust removal treatment cylinder 19 into a spiral plate body, and forming a different diameter part 20 a having a large diameter and an uneven outer periphery from the threshing part 2. As a result, it is possible to reliably take in the waste dust supplied from the air and improve the transferability and prevent the dust disposal unit 18 from being clogged.

  On the inner peripheral surface of the casing of the dust removal processing section 18, as shown in FIG. 4, an enlarged perspective view taken in the direction of arrow D in FIG. 22a is set up. The inclined guide plates 22a are arranged in parallel at a plurality of positions at a fixed inclination angle β so as to guide a transfer object such as sawdust backward by the rotation operation of the dust removal processing teeth 20.

  By forming the inclination angle β to be larger than the spiral feed angle α of the dust disposal teeth 20, it is possible to improve the conveying ability and speed up the discharge. Moreover, the inclination angle β is made smaller than the spiral feed angle α, and the increase in resistance increases leakage from the processing net 21, thereby preventing the dust disposal unit 18 from being clogged. In addition, by setting the inclination angle β and the spiral feed angle α to the same level, it is possible to speed up the discharging of the sawdust.

  Moreover, the processing net | network 21 of the dust removal process part 18 can improve a filtration rate by forming the scale of the rear part side gradually along the process of the dust removal process part 18. FIG.

  Next, with respect to the support part of the dust removal treatment cylinder 19, as shown in FIG. 5, an enlarged longitudinal view of the main part, the inner periphery of the dust removal treatment cylinder 19 by the pipe shaft is sealed so as to seal the inside of the bearing 71. The support metal 72 is fitted to the part. The support metal 72 forms a labyrinth with a gap G adjacent to the end surface of the dust removal treatment cylinder 19 and its inner peripheral surface, and a gap H adjacent to the outer peripheral surface of the center support shaft 73 of the dust removal treatment cylinder 19. As a result, it is possible to improve the durability of the bearing 71 by preventing the entangled chips from being wound. Further, by sealing the outside of the bearing 71 with the cover plate 74, it is possible to eliminate mainly dust from the scissor cutter 1c, so that the durability of the bearing 71 can be improved.

It is a longitudinal cross-sectional view of the threshing apparatus by a threshing part axis line position. It is a horizontal sectional view of the threshing apparatus by a threshing part axis line position and a dust removal part axis line position. It is a rear view of a threshing apparatus. FIG. 3 is an enlarged view of an internal view seen in an arrow D in FIG. About the support part of the dust removal process cylinder 19, it is a principal part longitudinal cross-sectional enlarged view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Threshing apparatus 1a Feed chain 2 Threshing part 3 Handling cylinder 6 Termination side plate 9 Wind selection part 18 Dust removal process part 19 Dust removal process cylinder 20 Processing member 21 Processing net 22a Inclination guide plate 23 Communication port 24 Dust removal port 25 2nd Processing unit 26 No. 2 processing cylinder 28 Processing member

Claims (3)

A threshing part (2) for threshing the harvested cereals that are sent later by a handling cylinder (3), and a waste-removing cylinder (2) that receives the processed material after the threshing process from the rear end of the threshing part (2). 19) the dust removal processing part (18) to be fed later while being treated by the treatment member (20), and the treatment member (28) of the second treatment cylinder (26) integral with the dust removal treatment cylinder (19). In the threshing apparatus for a combine equipped with the 2nd process part (25) which processes the 2nd thing after the selection which passed through the selection part (9),
The dust removal treatment cylinder (19) is formed to have the same diameter as the second treatment cylinder (26), and the treatment member (20) is arranged in a spiral shape, and the dust removal treatment cylinder (19) is treated. A threshing device for a combine, wherein the outer diameter of the member (20) is larger than the outer diameter of the processing member (28) of the second processing cylinder (26).   The threshing apparatus for a combine according to claim 1, wherein the processing member (20) is formed by a continuous spiral plate.   The said processing member (20) forms the outer peripheral part of a spiral board | plate in uneven | corrugated shape in the range which faces the communication part from a threshing part (2) to a dust removal process part (18), It is characterized by the above-mentioned. The combine threshing device according to claim 2.

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