JP2013066429A - Threshing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent resonance of a grain sieve occurred when swingably moving a sieve case for selecting grains.SOLUTION: A threshing device includes the sieve case 6 supported freely swingably moving in a vertical direction and a front and back direction, wherein the grain sieve 24 is fixed so as to cover attachment parts 30 and 31 provided on a right and left side walls 6a and 6b of the sieve case 6, respectively. The threshing device includes frame members 35 and 36 over the right and left side walls 6a and 6b of the sieve case 6 are provided and the grain sieve 24 is connected to the frame members 35 and 36.

Description

  The present invention relates to a mounting structure for a grain sheave in a sheave case.

  As a conventional combine threshing device, for example, the one shown in Patent Document 1 is known. Here, the front part of the sheave case is pivotally supported by a pair of left and right swing arms suspended from the threshing side plate, and is supported so as to be swingable in a substantially front-rear direction. It is configured to move up and down and back and forth. This threshing device includes a sheave case supported so as to be swingable and movable in the vertical direction and the front-rear direction, and the grain sheave is fixed so as to extend over attachment portions provided on the right and left side walls of the sheave case. .

JP 2002-58328 A (FIG. 1)

In the above combine threshing device, a mixture of grains, swarf, etc. supplied from the threshing part is received by a sheave case, and the sheave case is swung in the vertical direction and the front-rear direction to select the mixture. However, at this time, in the grain sieve, the cerealized grains are mainly leaked, and the grains are sorted out from other branches and cereals.
However, when swinging the sheave case, when the specific frequency is reached, the Glen sheave starts to resonate and begins to bend in the vertical direction, which causes stress to concentrate on the connecting part of the sheave case with the right and left side walls. That part could be damaged.

  An object of the present invention is to prevent the resonance of the Glen sheave that occurs when the sheave case is swung in order to select the grain.

  1st characteristic structure of the threshing apparatus which concerns on this invention is equipped with the sheave case supported so that rocking movement was possible in the up-down direction and the front-back direction, and extended to the attachment part provided in each of the right and left side wall of this sheave case. A threshing device in which the grain sheave is fixed as described above, comprising a frame member that extends over the left and right side walls of the sheave case, and is connected to the frame sheave.

[Action and effect]
As in this configuration, by connecting the frame members across the left and right side walls of the sheave case to the glenshave, it is possible to improve the rigidity of the glenshave, thereby effectively suppressing the vertical deflection caused by the glenshave resonance. be able to. As a result, the stress concentration on the connecting portion of the sheave case with the right and left side walls of the Glen sheave is alleviated and damage is prevented.

  The second characteristic configuration is that the frame member is provided at a front end or a rear end of the Glen sheave.

[Action and effect]
According to this configuration, since the frame member is provided at the front end or the rear end of the Glen sheave that is more easily bent in the vertical direction, the vertical deflection due to the resonance of the Glen sheave can be more effectively suppressed.

  The third characteristic configuration is that the right and left end portions of the frame member are connected to the attachment portions of the right and left side walls of the sheave case, respectively.

[Action and effect]
According to this configuration, the mounting portion can be shared when the frame member and the Glen sheave are attached to the sheave case, so that the number of parts can be reduced and the cost can be reduced.

  The fourth characteristic configuration is that the Glen sheave is fixed so as to be sandwiched from above and below by the frame member and the mounting portion.

[Action and effect]
According to this configuration, since the grain sheave is more firmly fixed to the sheave case by the frame member and the mounting portion, the rigidity of the grain sheave is further improved.

It is a whole left view of the self-decomposing combine. It is a whole top view of a self-detaching combine. It is a vertical side view of a threshing apparatus. It is a top view of a sheave case. It is a longitudinal cross-sectional view of the grain sheave part in a sheave case. It is a top view of the grain sheave part in a sheave case. It is a longitudinal cross-sectional view of the grain sieve part which concerns on another embodiment of a frame member. It is a top view of the grain sheave part concerning another embodiment of a frame member. It is a longitudinal cross-sectional view of the grain sieve part which concerns on another embodiment of a frame member. It is a top view of the grain sheave part concerning another embodiment of a frame member. It is explanatory drawing which shows a part of transmission system in another embodiment.

  Hereinafter, an embodiment in which the threshing apparatus of the present invention is applied to a self-removing combine will be described with reference to the drawings.

  FIG. 1 shows the entire side of the combine, and FIG. 2 shows the entire plane of the combine. In this combine, a cutting unit C is connected to a front part of a traveling machine body B traveling by a pair of left and right crawler type traveling apparatuses A, and a threshing device D and a Glen tank G are mounted on the traveling machine body B. It is comprised by forming the boarding operation part F with a cabin in the front location of G.

  As shown in FIG. 3, the threshing apparatus D has a threshing unit D1 and a threshing unit D1 that perform a threshing process on the tip side of the harvested cereal rice bran that is held and conveyed by the feed chain 1 arranged on the left side thereof. A sorting unit D2 that performs a sorting process on the processed material from the first and a collection unit D3 that collects the first and second products out of the processed materials sorted by the sorting unit D2. Yes. Note that the left side of FIG. 3 is the front side of the machine, and the right side of the page is the rear side of the machine. In addition, the front side, the rear side, the right side, and the left side of each component described below correspond to the front side, the rear side, the right side, and the left side of the aircraft.

  The threshing portion D1 includes a handling cylinder 2 that is rotationally driven around the front and rear horizontal axis X1, a receiving net 3 that is disposed on the lower side of the handling cylinder 2, and a dust feeding port that is formed behind the receiving net 3 4 and the like, and the handling cylinder 2 is separated into single grains from the harvested cereal mash that is held and conveyed by the feed chain 1, and the cereal grains and cut straws are received by the receiving net 3 From the dust delivery port 4 to the sorting unit D2. The grain and the cut straw that have not leaked from the receiving net 3 are discharged to the sorting unit D2.

  The sorting portion D2 is located below the receiving net 3 in a state where the left and right sides of the front side are suspended and supported by a swing arm (not shown) that can swing back and forth around a horizontal axis (not shown) facing left and right. An eccentric crank mechanism in which the sheave case 6 is disposed at the rear portion thereof, and the sheave case 6 disposed at the front lower portion of the sheave case 6. The processed product from the threshing part D1 is subjected to sieving by being driven to swing by the operation of No. 8, and the tang 7 is sieved by the sheave case 6 by supplying the sorting air toward the sheave case 6. Wind sorting is added to the processed material to be sorted.

  And by these selection operation | movement, the processed material from the threshing part D1 is a mixture of the grain as the 1st thing, the grain as the 2nd thing, and the cut straw, etc., and the cut straw as the 3rd thing And so on.

  The collection part D3 includes a first thing collection part 9 formed below the front part of the sheave case 6, a second thing collection part 10 formed below the rear part of the sheave case 6, and the like.

  The 1st thing collection | recovery part 9 is the 1st screw arrange | positioned in the bottom part at the bottom while collecting the 1st thing of the processed materials sorted by the selection part D2. 11 is configured to convey toward the lifting screw 12 (see FIG. 1) connected to the right end thereof.

  The second product collection unit 10 collects the second product out of the processed products sorted by the sorting unit D2, and the second screw collected in the left and right direction at the bottom of the collected second product. 13 is configured to convey toward a second reduction screw (not shown) connected to the right end thereof.

  The lifting screw 12 is configured to lift the first item conveyed by the first screw 11 and supply it to the Glen tank G arranged in parallel on the right side of the threshing device D from above. Yes. The second reduction screw (not shown) is configured to lift the second item conveyed by the second screw 13 and reduce it to the sheave case 6.

  As shown in FIG. 3, the sheave case 6 includes a first gren pan 15 disposed at an upper front end of the sheave case 6, a chaff sheave 17 disposed in a state of extending rearward from the lower side of the first pan, and an upper portion of the rear half of the chaff sheave 17. The second Glen pan 18 disposed in the first strollac 19 disposed above the chaff sheave 17, the second Strollac 22 disposed behind the chaff sheave 17, and the first strut rack disposed below the front of the chaff sheave 17. The 3 grain pan 23 and the grain sheave 24 arranged in a state of being connected to the rear end of the third grain pan 23 are provided.

  The first grain pan 15 receives the processed material that has leaked from the front half of the receiving net 3 and moves it backward while sorting the specific gravity difference.

  The sorting air from the Chinese radish 7 is supplied toward the chaff sheave 17 through the air passage 25. The chaff sheave 17 is configured to transfer the remaining processed products backward while roughly selecting grains and the like from the processed products leaked from the rear part of the receiving net 3 and causing them to leak. The first Strollac 19 screens and removes grains and the like from the processed product discharged from the dust feed port 4 and transfers the remaining processed product backward.

  The second gren pan 18 is configured to transfer the processed material that has leaked through the first Strollac 19 toward the rear while sorting the specific gravity difference.

  The second Strollac 22 sifts and sorts grains and the like from the processed material transferred by the chaff sheave 17 and leaks it to the No. 2 collection unit 10, and directs the remaining lightly cut straw or the like to the rear. Are transported and discharged out of the machine.

  The third glen pan 23 is configured to transfer the processed material leaked from the front portion of the chaff sheave 17 toward the rear side while selecting the specific gravity difference. The grain sieve 24 finely sorts the grain from the processed product transferred by the third grain pan 23 and the processed product leaked from the rear side of the chaff sheave 17 and leaks it to the first product recovery unit 9 and the remaining processed product. Is transferred rearward and supplied to the second item recovery unit 10.

  As shown in FIGS. 3 and 4, first and second attachment members 30 and 31 (an example of an attachment portion) for fixing the Glen sheave 24 are respectively attached to the bottom portions of the right and left side walls 6 a and 6 b of the sheave case 6. ) Is provided along the longitudinal direction of the aircraft. Note that the left side, right side, upper side, and lower side of the sheet of FIG. 4 are the front side, rear side, right side, and left side of the machine body.

  As shown in FIGS. 5 and 6, the first attachment member 30 is a rear end portion of the third gren pan 23 and is formed across the right and left side walls 6 a and 6 b of the sheave case 6. The second mounting member 31 is longer than the first mounting member 30, and is provided on the rear side of the first mounting member 30 with a slight gap between the second mounting member 31 and the first mounting member 30. Moreover, the 2nd attachment member 31 is provided with the protrusion part 31a and the protrusion part 31b in each of the one end part and the intermediate part. Note that the left side of FIG. 5 is the front side of the machine, and the right side of the page is the rear side of the machine. Each of the left side, the right side, the upper side, and the lower side of the plane of FIG. 6 is the front side, the rear side, the right side, and the left side of the aircraft.

  The protrusions 31a and 31b of the second attachment member 31 are attached so as to protrude inside the sheave case 6, and through-holes (not shown) penetrating in the thickness direction are formed in the protrusions 31a and 31b. Has been.

  As shown in FIG. 6, the grain sieve 24 is configured by a rectangular crimp net or a resin-molded net having a fine mesh capable of leaking grain. Further, the width in the left-right direction (the vertical direction of the paper surface in FIG. 6) of the Glen sheave 24 is substantially the same as or slightly the inner width in the left-right direction of the sheave case 6 (distance between the right side wall 6a and the left side wall 6b). It is set smaller.

  In the present embodiment, the front end portion of the grain sheave 24 is disposed on the first mounting member 30, and the right and left ends of the grain sheave 24 are disposed below the second mounting member 31. Thereby, the Glen sheave 24 is installed along the bottom portion of the sheave case 6 so as to cover the first mounting member 30, the second mounting member 31 of the right side wall 6a, and the second mounting member 31 of the left side wall 6b.

  Further, the sheave case 6 in the present embodiment includes a first frame member 35 and a second frame member 36 each having an elongated L-shaped cross section at each of a rear end portion and a front end portion of the grain sheave 24.

  The length of the first frame member 35 in the longitudinal direction is set to be substantially the same as the left and right widths of the grain sieve 24, and projecting portions 35a, 35b, and 35c are formed at both ends and an intermediate portion, respectively. . Each protrusion 35a, 35b, 35c is formed with a through hole (not shown) penetrating in the thickness direction. The second frame member 36 has the same shape as the first frame member 35. That is, protrusions 36a, 36b, and 36c are formed at both ends and an intermediate portion, and through holes (not shown) that penetrate in the thickness direction are formed in the protrusions 35a, 35b, and 35c. .

Glen sheave 24 and first and second frame members 35 and 36 are fixed in sheave case 6 as follows.
As shown in FIGS. 4 and 6, when the front end portion of the grain sheave 24 is placed on the first mounting member 30 and the right end and the left end of the grain sheave 24 are disposed below the second mounting member 31, the grain sheave 24 is moved to the sheave. It is installed along the bottom of the case 6.

  Next, as shown in FIG. 5, the first frame member 35 is disposed on the upper side of the front end portion of the grain sheave 24, and the second frame member 36 is disposed below the protruding portions 31 a of the left and right second mounting members 31. Arrange.

  First, the first frame member 35 is disposed on the front end portion of the grain sheave 24 and the first mounting member 30, and the connection bolt B is connected to the through holes of the projecting portions 35 a, 35 b, and 35 c of the first frame member 35, An appropriate mesh hole in the front end portion of the grain sheave 24, the through hole of the first mounting member 30, and the three contact plates 50 are inserted and fastened with nuts N. As a result, the first frame member 35 is coupled to the first mounting member 30 via the front end portion of the grain sheave 24 and the contact plate 50.

  In other words, the entire width of the front end portion of the grain sieve 24 is fixed by being sandwiched from above and below by the first frame member 35 and the first mounting member 30.

Next, the second frame member 36 is fixed.
First, the right end protrusion 36 a of the second frame member 36 is disposed below the protrusion 31 a of the second mounting member 31 on the right side wall 6 a of the sheave case 6, and the connecting bolt B is connected to the rear end portion of the grain sheave 24. Are inserted through the appropriate mesh hole, the through hole of the protrusion 31a of the second mounting member 31 of the right side wall 6a, and the through hole of the protrusion 36a of the second frame member 36, and fastened with a nut N. . Thereby, the right end of the second frame member 36 is connected to the protruding portion 31 a of the second attachment member 31 of the right side wall 6 a of the sheave case 6.

  Similarly, the protrusion 36b at the left end of the second frame member 36 is also arranged below the protrusion 31a of the second mounting member 31 on the left side wall 6b of the sheave case 6 so that the connecting bolt B is connected to the Glen sheave 24. The nut N is inserted through an appropriate mesh hole in the rear end portion, the through hole of the protruding portion 31a of the second mounting member 31 of the left side wall 6b, and the through hole of the protruding portion 36b of the second frame member 36. Conclude with. Thereby, the left end of the second frame member 36 is connected to the protruding portion 31 a of the second attachment member 31 of the left side wall 6 b of the sheave case 6.

  At this time, the right corner of the rear end portion of the grain sieve 24 is fixed so as to be sandwiched from above and below by the right end of the second frame member 36 and the protruding portion 31a of the second mounting member 31 of the right side wall 6a. The left corner portion of the rear end portion of the grain sieve 24 is fixed so as to be sandwiched from above and below by the left end of the second frame member 36 and the protruding portion 31a of the second mounting member 31 of the left side wall 6b. Further, the connecting bolt B is inserted and fastened with the nut N across the projecting portion 36 c of the intermediate portion of the second frame member 36 and the net hole of the intermediate portion of the rear end portion of the grain sheave 24.

  Finally, the connecting bolt B is inserted through an appropriate mesh hole in the right end portion of the grain sheave 24 and the protruding portion 31b of the intermediate portion of the second mounting member 31 of the right side wall 6a of the sheave case 6 to thereby remove the nut N And another connecting bolt B is inserted through an appropriate mesh hole in the left end portion of the grain sheave 24 and the protruding portion 31b in the middle portion of the second mounting member 31 of the left side wall 6b of the sheave case 6. And fasten with a nut N and fix.

  In the above-described configuration, the first and second frame members 35 and 36 are fixed to the front end portion and the rear end portion of the grain sieve 24. However, the present invention is not limited to this configuration, and at least one frame member is used. Although it may be configured to be provided at any of the front end portion, the intermediate portion, and the rear end portion of the grain sheave 24, it is provided at the front end portion or the rear end portion of the grain sheave 24 in terms of more effectively preventing the resonance of the grain sheave 24. It is desirable.

  In addition, when the second frame member 36 is fixed to the grain sheave 24, the second frame member 36 may not necessarily be connected to the protruding portion 31 a of the second mounting member 31, and the through holes of the protruding portions 36 a, 36 b, and 36 c of the second frame member 36 may be used. And connecting the bolt B through the mesh hole of the grain sheave 24 and fastening it with a nut N so that the second frame member 36 is directly connected to the right and left side walls 6a and 6b of the grain sheave 24. Also good. Similarly, the first frame member 35 may be directly connected to the grain sieve 24 without being connected to the first mounting member 30.

[Another embodiment]
[1] The shape of the frame member is not limited to that formed by the angle members shown in the first and second frame members 35 and 36 of the above-described embodiment. 8 and FIG. 8, a round bar R is welded and integrated with a flat plate P having three protrusions to improve its rigidity, or as shown in FIG. 9 and FIG. The cost may be reduced as the shape of only the flat plate P having two protrusions.

[2] The mounting structure of the first and second mounting members 30, 31 and the first and second frame members 35, 36 of the above-described embodiment is not limited to the above-described embodiment. Even if the arrangement relationship between the first mounting member 30 and the first frame member 35 is reversed upside down, or the arrangement relationship between the protruding portion 31a of the second attachment member 31 and the second frame member 36 is upside down. good.

[3] The following configuration may be further added to the configuration of the above-described embodiment in order to prevent the resonance of the grain sieve 24. In the transmission system shown in FIG. 11, the driving force of the engine 40 is transmitted to each of the first driving shaft 42 and the second driving shaft 43 via the output shaft 41 and a belt transmission type transmission mechanism. Then, the driving force transmitted to the first drive shaft 42 is transmitted to the tang 7, and further, the first screw 11, the second screw 13, and the swing shaft 44 of the crank mechanism 8 through a belt transmission type transmission mechanism. It is transmitted to each of. The driving force transmitted to the second drive shaft 43 is transmitted to the handling cylinder 2.

  In this transmission system, a vibration sensor 45 such as an acceleration pickup that detects vibration of the swing shaft 44 of the crank mechanism 8 is provided on the right or left side walls 6a, 6b of the sheave case 6, and the rotational speed of the engine 40 can be controlled. When the vibration sensor 45 senses the resonance of the grain sieve 24, the control circuit 46 receives the signal from the vibration sensor 45 and controls the rotational speed of the engine 40 to avoid the resonance of the grain sieve 24. You may comprise so that it may do.

  The present invention is not limited to a self-removing combine, but can also be used for a normal combine or a fixed-type threshing apparatus.

D Threshing device 6 Sheave case 6a Right side wall 6b Left side wall 24 Glen sheave 30 First mounting member (mounting part)
31 Second mounting member (mounting part)
35 First frame member (frame member)
36 Second frame member (frame member)

Claims (4)

A threshing apparatus comprising a sheave case supported so as to be swingable and movable in the vertical direction and the front-rear direction, wherein the grain sheave is fixed so as to extend over attachment portions provided on the right and left side walls of the sheave case. ,
A threshing apparatus comprising a frame member extending on the left and right side walls of the sheave case, wherein the grain sheave is connected to the frame member.   The threshing apparatus according to claim 1, wherein the frame member is provided at a front end or a rear end of the Glen sheave.   The threshing apparatus according to claim 1 or 2, wherein the right and left end portions of the frame member are connected to attachment portions of the right and left side walls of the sheave case, respectively.   The threshing device according to claim 3, wherein the grain sieve is fixed so as to be sandwiched from above and below by the frame member and the attachment portion.

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