JP2010263851A - Threshing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the risk of causing the clogging by waste straws at the periphery of a discharging opening, caused by the hooking of the terminal parts of the waste straws at the ear sides on the upper edge of the discharging opening or one terminal edge remotest from a nipping and conveying mechanism. <P>SOLUTION: The threshing apparatus is constituted so that the ear sides of reaped grain culms may be fed by a nipping and conveying mechanism 26 arranged at one side part of a threshing part 22, from a feeding opening 30 of the threshing part 22 to a space between a threshing cylinder 28 and a receiving net 29, and discharged from the discharging opening 31 of the threshing part 22. The discharging opening 31 is formed so that the height position of one terminal side part 31a positioned at the side remote from the nipping and conveying mechanism 26 at the upper edge 31A of the discharging opening 31 may be positioned at the upper side of the height position of one terminal side part 30a positioned at the side remote from the nipping and conveying mechanism 26 at the upper edge 30A of the feeding opening 30, and the one-terminal edge 31B remotest from the nipping and conveying mechanism 26 at the discharging opening 31 may be positioned at the position remote from the nipping and conveying mechanism 26 than the receiving net 29. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is provided with a holding conveyance mechanism that holds the stock side of the harvested cereal cocoon on one side portion of the threshing unit and conveys the harvested cereal rice cake in a sideways posture, and the sandwiched conveyance inside the threshing unit A handling cylinder that rotates with a support shaft along the conveyance direction of the mechanism as a fulcrum and a receiving net that covers the lower side of the handling cylinder. It is related with the threshing apparatus comprised so that it may supply between the said handling cylinder and the said receiving net from the supply port formed in, and may discharge | emit from the discharge port formed in the rear-end part of the said threshing part.

  In the threshing device, the supply port and the discharge port of the threshing unit are arranged at the height position of one end side portion located on the side away from the sandwiching conveyance mechanism at the upper edge thereof, or at the one end edge farthest from the sandwiching conveyance mechanism. The positions are formed so as to be the same or substantially the same (for example, refer to Patent Documents 1 and 2).

JP-A-11-275935 JP 2009-5610 A

  The supply port of the threshing part is formed in a substantially arc shape substantially along the receiving net from the nipping part of the threshing part so as to be recessed toward the side away from the nipping part. And, the shape of the supply port is such that the upper edge thereof has a lower right end portion located on the side away from the nipping and conveying mechanism, and its lower edge is not positioned below the surface of the receiving net. Furthermore, by setting the one end edge farthest from the holding and conveying mechanism so as not to be located on the side farther from the holding and conveying mechanism than the receiving net, the tip side of the harvested cereal culm is placed between the handling cylinder and the receiving net from the supply port. It moves smoothly.

  The upper edge of the supply port thus formed is discharged so that the height position of the one end side portion located on the side away from the nipping and conveying mechanism, the position of the one end edge farthest from the nipping and conveying mechanism, and the like are the same or substantially the same. When the outlet is formed, if the handling depth in the threshing part is set to a depth handling that increases the length of the tip of the harvested cereal pod supplied to the inside of the threshing part, it moves between the handling cylinder and the receiving net. If the tip side of the harvested cereal culm (the tip side of the waste straw) comes out from between the handle cylinder and the receiving net in an arcuate posture along the receiving net, the end on the tip side is discharged. When it is easy to get caught on the upper edge of the exit, and when it comes out from between the handling cylinder and the receiving net and returns to its side position from the arcuate position along the receiving net by its own weight, the end on the tip side However, it becomes easy to be caught by the one end edge most distant from the clamping conveyance mechanism in a discharge port.

  As a result, in the vicinity of the discharge port, clogging of the discharge wall is likely to occur due to the end of the tip of the discharge wall being caught on the upper edge of the discharge port or the one end edge farthest from the holding and conveying mechanism.

  The purpose of the present invention is that the tip of the waste straw tip side is caught by the upper edge of the discharge port or the one end edge farthest from the holding and conveying mechanism, which may cause clogging of the discharge wall around the discharge port. It is to suppress.

The first problem solving means in the present invention is:
On one side of the threshing unit, a holding conveyance mechanism is provided that holds the stock side of the harvested cereal rice cake and conveys the harvested cereal rice cake in a lying position,
Inside the threshing section, a handling cylinder that rotates around a support shaft along the conveyance direction of the clamping conveyance mechanism and a receiving net that covers the lower side of the treatment cylinder,
By the holding and conveying mechanism, the tip side of the harvested cereal pod is supplied between the handling cylinder and the receiving net from a supply port formed at the front end of the threshing portion, and is formed at the rear end of the threshing portion. In the threshing device configured to discharge from the outlet,
The height position of the one end side portion located on the side away from the holding and conveying mechanism at the upper edge of the discharge port is the height position of the one end side portion located on the side away from the holding and conveying mechanism at the upper edge of the supply port. The discharge port is formed so that one end edge of the discharge port that is farthest from the holding and transporting mechanism is positioned at a position farther from the holding and transporting mechanism than the receiving net. is there.

  According to this problem solving means, the opening area of the one end located at the tip end side of the harvested grain culm at the discharge port is expanded upward and in the direction away from the holding and conveying mechanism. As a result, the tip side (the tip side of the waste straw) of the harvested cereal rice cake that has moved between the handling cylinder and the receiving net slips out between the handling cylinder and the receiving net in an arcuate posture along the receiving net. Even if the tip ends, the end on the tip side will not be easily caught on the upper edge of the discharge port, and it will come out between the handling cylinder and the receiving net, and will also change from an arcuate attitude along the receiving net to a sideways attitude. Even if it returns due to its own weight, the end on the tip side is less likely to be caught on the one end edge farthest from the pinch transport mechanism at the discharge port.

  Therefore, it is possible to suppress the possibility of clogging of the waste straw around the discharge port due to the tip end of the waste straw being caught by the upper edge of the discharge port or the one end edge farthest from the holding and conveying mechanism. it can.

The second problem solving means in the present invention is the above first problem solving means,
The side wall on the side of the other side where the sandwiching and conveying mechanism is not provided in the threshing unit is erected in a vertical posture, and the one end edge of the discharge port is formed by the inner surface of the side wall.

  According to this problem solving means, the opening area of the one end located on the tip end side of the harvested cereal rice cake at the discharge port can be made larger in the direction away from the holding and conveying mechanism. As a result, the tip side of the harvested cereal rice cake (the tip side of the waste straw) that has moved between the handling cylinder and the receiving net comes out from between the handling cylinder and the receiving net, and the arc shape along the receiving net Even if the weight returns from the posture to the sideways posture due to its own weight, the end on the tip side is not caught by the one end edge farthest from the holding and conveying mechanism at the discharge port.

  Therefore, it is possible to more effectively prevent the clogging of the waste straw from occurring around the discharge port due to the tip end of the waste straw being caught on the upper edge of the discharge port or the one end edge farthest from the holding and conveying mechanism. Can be suppressed.

The third problem solving means in the present invention is the above first or second problem solving means,
A support frame for supporting the receiving net;
Equipped with a guide plate so as to span one end side portion located on the side away from the holding and conveying mechanism at the rear end portion of the support frame and the one end edge of the discharge port,
The posture of the guide plate is set to a rearwardly spread inclined posture located on the rear side of the threshing portion toward the one end edge side of the discharge port in the guide plate.

  According to this problem solving means, when the tip side of the waste straw that has come out between the handling cylinder and the receiving net returns to the lying down position from the arcuate attitude along the receiving net by its own weight, the guide plate is Then, while receiving the end portion on the tip side, it gradually guides in a direction away from the holding and conveying mechanism. As a result, it is possible to suppress the possibility of the occurrence of cracking on the tip side of the waste straw as the tip side of the waste straw suddenly returns from the arcuate posture to the sideways posture.

  Therefore, it is possible to suppress the possibility of clogging of the waste straw around the outlet due to the occurrence of the folding of the straw on the tip side of the waste straw.

It is a whole side view of a self-desorption type combine. It is a whole top view of a self-detaching combine. It is a vertical side view of a threshing apparatus and a waste straw processing apparatus. It is a vertical front view of a threshing apparatus. It is a vertical rear view of a threshing apparatus. It is a cross-sectional top view which shows structures, such as a threshing apparatus and a waste straw conveying apparatus. It is a vertical side view which shows the structure of a waste straw conveying apparatus and a waste straw processing apparatus. It is a perspective view of the principal part which shows the position and shape of a guide plate and a flow-down control rod. It is a vertical back view of the principal part which shows the position and shape of a guide plate and a flow control rod. It is XX sectional drawing in FIG. It is a cross-sectional top view of the principal part which shows the position and shape of a guide plate and a flow-down control rod. It is a vertical side view of the principal part which shows the shape of a guide plate and a control member. It is a vertical side view of the principal part which shows the fixed structure of the movable guide in a guide rod.

Hereinafter, an embodiment in which the present invention is applied to a threshing device for a self-decomposing combine machine will be described with reference to the drawings as an example of an embodiment for carrying out the present invention.

  As shown in FIGS. 1 and 2, the self-removing combine exemplified in this embodiment has a boarding operation unit 2 formed on the front right side of the traveling vehicle body 1. On the left side of the front part of the traveling vehicle body 1, a cutting and conveying unit 3 that harvests and conveys crop cereals such as paddy rice and wheat during work traveling is connected to be swingable up and down. The left half of the traveling vehicle body 1 receives the harvested corn straw (hereinafter abbreviated as the harvested corn straw) conveyed by the harvesting and conveying section 3, and performs the threshing process on the harvested corn straw. A threshing device 4 for performing a sorting process on the processed product is mounted. The rear portion of the threshing device 4 is connected to a waste straw processing device 5 that discharges the waste straw that is the cereal flour after the threshing processing to the outside. On the right side of the rear part of the traveling vehicle body 1 is mounted a bagging device 7 for storing single-grained grains from the threshing device 4 conveyed by the lifting screw 6 and for bagging the stored single-sized grains. It is.

  The traveling vehicle body 1 includes a hydrostatic continuously variable transmission (not shown) in which power from an engine (not shown) mounted on a vehicle body frame 8 is integrally provided in a transmission case (hereinafter abbreviated as T / M case) 9. 1) or a traveling transmission system (not shown) provided inside the T / M case 9 and the like, and is transmitted to a pair of left and right crawler type traveling devices 10 provided at the lower part of the body frame 8. It is.

  The cutting and conveying unit 3 includes a cutting frame 11 connected to the front left side of the body frame 8 so as to be able to swing up and down, three weed members 12, a pair of left and right pulling devices 13, a clipper-type cutting device 14, and a pair of right and left. , The feeding and conveying device 15, and the like. Then, the three weeding members 12 are arranged at predetermined intervals in the left-right direction, and the corresponding pulling device 13 on either the left or right side is arranged between two adjacent ones of the weeding members 12. A pair of left and right pulling frames 17 are formed in the front part of the cutting and conveying unit 3.

  The three weeding members 12 can introduce up to two crop culms between two adjacent weeding members 12 at the left end, right end, and left and right intermediate portions of the cutting and conveying unit 3. In addition, at a predetermined interval in the left-right direction, at the time of work travel, a maximum of 4 crop culms to be harvested are divided for each pulling frame 17 as the machine travels. Each of the left and right pulling devices 13 can cause a maximum of two crop culms introduced between the corresponding weeding members 12 to be raked toward the left and right center side of the cutting and conveying unit 3. It is configured. The cutting device 14 is configured to cut the stock side of up to four crop culms caused by the left and right pulling devices 13. The left and right scraping and conveying devices 15 are configured to scrape and convey a maximum of four crop culms toward the left and right central part of the cutting and conveying unit 3. The supply conveyance device 16 receives the crop culm after cutting from the left and right scraping conveyance devices 15 and directs the cereal to the threshing device 4 while changing the posture from the standing posture at the time of receipt to the right-tilt posture for threshing. Are configured to be fed and conveyed.

  That is, the cutting and conveying unit 3 is configured to have a two-frame four-row cutting specification capable of cutting and conveying a maximum of four crops by the pair of left and right pulling frames 17. As a result, compared with a general three-frame four-line mowing specification cutting and conveying unit configured to cut and convey up to four crops with four weed members and three pulling devices. The configuration can be simplified and the cost can be reduced while being configured to have a wide working width.

  As shown in FIG. 2, the weeding member 12 located at the left end of the cutting and conveying unit 3 has a crawler type traveling on the left side in the left-right direction of the fuselage in the position of the weeding start of the divider 18 provided at the front end thereof. It is configured to coincide with the position of the left end portion in the device 10. Further, the weeding member 12 located at the right end of the cutting and conveying unit 3 has the right end of the crawler type traveling device 10 on the right side in the left-right direction of the machine body at the position of the weeding start of the divider 18 provided at the front end. The crawler type traveling device 10 on the right side is configured so as to substantially coincide with the position of the right end portion in a state slightly closer to the inside of the body than the position.

  That is, in the left and right crawler type traveling devices 10, the distance between the end portions on the laterally outer side of the fuselage becomes larger than the working width of the cutting and conveying unit 3 configured to enable the cutting and conveying of up to four items. In this way, they are arranged at a predetermined interval in the left-right direction. As a result, the distance between the left and right crawler type traveling devices 10 can be increased, and the wetland performance is improved without causing a decrease in turning performance by increasing the contact length of each crawler type traveling device 10. be able to.

  Further, the left crawler type traveling device 10 is arranged so that the position of the left end portion thereof coincides with the starting edge of the left divider 18 in the left-right direction so that it does not protrude from the starting edge of the grass to the left side of the machine body. . As a result, the left crawler type traveling is performed at the time of work traveling such as turning around where the uncut crop is present on the left outer side of the traveling vehicle body 1 or splitting where the uncut crop is present on both the left and right outer sides of the traveling vehicle body 1. Inconvenience such as stepping on an uncut crop located near the left outer side by the device 10 or mud approaching an uncut crop located near the left outer side by the left crawler type traveling device 10 Generation | occurrence | production can be prevented and the fall of the working efficiency resulting from the stepping and mud gathering can be avoided.

  On the other hand, the right crawler type traveling device 10 has its right end portion substantially coincided with the starting edge of the weed of the right divider 18 in the left-right direction, so that uncut crops exist on the left and right outer sides of the traveling vehicle body 1. During the operation such as middle splitting, the work width between the rightmost crop of the right divider 18 between the rightmost crop within the work width of the cutting and conveying unit 3 and the crop outside the work width adjacent to this crop. If it is set so that it passes through the side of the crop inside, it is possible to prevent the occurrence of inconvenience such as stepping on an uncut crop located near the right outside by the crawler type traveling device 10 on the right side. It is possible to avoid a decrease in work efficiency due to the above.

  That is, it is possible to configure a full-cutting specification that can prevent the left and right crawler type traveling devices 10 from stepping on uncut crops and mud approaching to the uncut crops during work traveling such as turning and middle cutting.

  In addition, the position of the weeding start end of the divider 18 provided at the front end of the weeding member 12 positioned at the right end of the cutting and conveying unit 3 is the right end of the crawler traveling device 10 on the right side in the left-right direction of the machine body. The right end portion of the right crawler type traveling device 10 may be configured so that the right end portion of the right crawler type traveling device 10 is slightly closer to the outer side than the right end portion of the right crawler type traveling device 10. You may comprise so that it may correspond with the position of this. On the other hand, the position of the weeding start end of the divider 18 provided at the front end of the weeding member 12 positioned at the left end of the cutting and conveying unit 3 is the left end of the left crawler traveling device 10 in the left-right direction of the machine body. It may be configured so as to be substantially coincident with the position of the left end portion of the left crawler type traveling device 10 in a state slightly closer to the outside of the aircraft than the position of the left side. Within the range in which it is possible to prevent the uncut crop near the left outer side from being stepped and to suppress mud gathering with respect to the uncut crop, it is slightly closer to the body side than the position of the left end of the left crawler type traveling device 10. In the state, the left crawler traveling device 10 on the left side may be configured to substantially coincide with the position of the left end.

  As shown in FIG. 1, the cutting and conveying unit 3 swings up and down by the operation of an elevating cylinder 19 installed over the body frame 8 and the cutting frame 11. A single-acting hydraulic cylinder is adopted as the lifting cylinder 19.

  As shown in FIGS. 1-6, the threshing apparatus 4 connects the upper case 21 with the lower case 20 connected with the vehicle body frame 8 so that opening and closing is possible, and forms a processing space. Threshing unit 22 that performs threshing process on the tip of the head, sorting unit 23 that performs sorting processing on the processed product from the threshing unit 22, and recovery unit 24 that collects the first and second items from the sorting unit 23, etc. It is configured with.

  The lower case 20 includes a transmission shaft 25 facing front and rear at the upper right end thereof, and the upper case 21 is configured to swing open and close with the transmission shaft 25 as a fulcrum.

  The threshing unit 22 is provided with a holding and conveying mechanism 26 on the left side thereof, and a handling cylinder 28 that rotates counterclockwise as viewed from the rear with a support shaft 27 facing in the front-rear direction, or a lower side of the handling cylinder 28. It is configured to include a receiving net 29 that covers it. At the front end of the threshing unit 22, a supply port 30 that enables the supply of the harvested cereal meal to the inside of the threshing unit 22 is formed. At the rear end of the threshing unit 22, a dust discharge port 31 is formed as a discharge port that enables discharge of harvested cereal meal and the like from the inside of the threshing unit 22.

  The holding and conveying mechanism 26 includes a feed chain 32 formed of an endless rotating chain with a protrusion provided in the lower case 20, a holding rail 33 provided on the upper case 21 in the front-rear direction, and the like. Power from the engine is transmitted to the feed chain 32 via a threshing clutch (not shown). And by this transmission, the feed chain 32 rotates so that the upper side facing the clamping rail 33 moves from the front part of the threshing part 22 toward the rear part. The sandwiching rail 33 is sandwiched and biased toward the feed chain 32 by a plurality of push springs 34.

  With this configuration, the holding and conveying mechanism 26 receives the stocker side of the harvested cereal mash conveyed by the harvesting and conveying unit 3 as the feed chain 32 is rotated by the power from the engine, and feeds the stocker side to the feed chain. It clamps between 32 and the clamping rail 33, and it conveys toward back. And the tip side of the harvested cereal rice cake is supplied from the supply port 30 between the handling cylinder 28 and the receiving net 29 by this conveying action, and the space between them is formed behind the threshing portion 22 from the dust sending port 31. It is discharged to the waste straw conveying unit 35.

  As shown in FIGS. 3 to 6, the handling cylinder 28 is installed across the front wall 36 and the rear wall 37 of the upper case 21 via the support shaft 27, and swings open and close together with the upper case 21. Power from the engine is transmitted to the handling cylinder 28 via a threshing clutch (not shown), a belt-type transmission mechanism 38, and the like. And by this transmission, the handling cylinder 28 is rotated about the front and rear support shaft 27 as a fulcrum, and by this rotation, the threshing is performed with respect to the tip side of the harvested grain culm located between the handling cylinder 28 and the receiving net 29. Apply processing.

  The receiving net 29 is formed in an arc shape that curves along the outer periphery of the handling cylinder 28, and is supported by an arc-shaped support frame 39 provided on the upper portion of the lower case 20. And while supporting the tip side of the harvested grain cocoon located between the handling cylinder 28 and the receiving net 29 from below, the processed material obtained by the above-mentioned threshing process is caused to leak toward the lower selection unit 23. The processed material that has not leaked from the receiving network 29 flows down from the rear end of the receiving network 29 toward the sorting unit 23.

  As shown in FIGS. 3 to 5, the sorting unit 23 is equipped with a swing sorting mechanism 40 in the lower case 20 so as to be able to swing back and forth. It is arranged and configured to rotate.

  Power from the engine is transmitted to the swing sorting mechanism 40 and the tang 41 through a threshing clutch or the like. And by this transmission, the rocking | swiveling selection mechanism 40 rocks | fluctuates in the front-back direction, and performs the sieve selection process with respect to the processed material from the threshing part 22. FIG. Further, the Kara 41 generates a sorting wind by rotating around the support shaft 42 as a fulcrum, and performs a wind sorting process on the processed product from the threshing unit 22 or the processed product in the sieve sorting process. And by these sort processing, the processed thing from the threshing part 22 is made into the 1st thing which is a single grain, the 2nd thing which is a mixture, such as a grain with a branch and a straw, and a piece of straw The first item is leaked from the upper side of the sorting direction of the swinging sorting mechanism 40, and the second item is leaked from the lower side of the sorting direction of the swinging sorting mechanism 40. Discharge No. 3 out of the machine.

  A dust exhaust fan 43 is arranged at a position above the swing sorting mechanism 40 at the rear part of the lower case 20 so as to rotate about a left and right support shaft 44 as a fulcrum. Power from the engine is transmitted to the dust exhaust fan 43 via a threshing clutch or the like. Due to this transmission, the dust exhaust fan 43 rotates about the left and right support shaft 44 as a fulcrum, and by this rotation, the third thing blown up by the sorting wind from the Kara 41 is sucked and discharged out of the machine.

  As shown in FIG. 3, the collection unit 24 includes a first collection unit 45 formed at a position below the upper side of the sorting direction of the swing sorting mechanism 40 in the lower case 20, and the lower side of the sorting direction of the swing sorting mechanism 40. It is comprised by the 2nd collection | recovery part 46 etc. which were formed in the position below.

  The No. 1 recovery part 45 has a No. 1 screw 47 arranged in the left-right direction at the bottom. Power from the engine is transmitted to the first screw 47 via a threshing clutch or the like. The lifting screw 6 is connected to the right end of the first screw 47 so as to interlock with and communicate with the first screw 47. With this configuration, the first collecting unit 45 collects the first thing leaking from the upper side in the sorting direction of the swing sorting mechanism 40, and the first screw 47 lifts the collected first thing. Carry toward 6. The lifting screw 6 lifts the first thing from the first screw 47 toward the bagging device 7 (see FIG. 1).

  The second recovery part 46 has a second screw 48 arranged in the left-right direction at the bottom. Power from the engine is transmitted to the second screw 48 via a threshing clutch or the like. A second reduction screw 49 is connected to the right end portion of the second screw 48 so as to interlock with and communicate with the second screw 48. With this configuration, the second collection unit 46 collects the second thing that leaks from the lower side of the sorting direction of the swing sorting mechanism 40, and reduces the collected second thing by the second screw 48. It is conveyed toward the screw 49. The second reduction screw 49 returns the second product from the second screw 48 to the swing sorting mechanism 40.

  As shown in FIGS. 3, 6, and 7, a waste straw transporting device 50 is provided in the waste straw transporting unit 35, and the waste straw transporting device 50 is connected to the waste straw holding and transporting mechanism 51 and the waste straw locking transport. The mechanisms 52 are arranged side by side in an inclined posture that is located on the right side of the machine as the rear side thereof. The waste straw holding and transporting mechanism 51 receives a guide base 53 of the harvested grain straw transported by the feed chain 32 and guides it toward the right rear side of the machine body so as to guide the guide straw 53 or the guide straw 53 And an endless rotating chain 54 with a protrusion that rotates along the axis. The drainer locking / conveying mechanism 52 includes an endless rotating chain 56 including a plurality of locking claws 55. Engine power branched from the belt-type transmission mechanism 38 is transmitted to the endless rotation chain 54 and the endless rotation chain 56 with projections via the transmission shaft 25 and the chain-type transmission mechanism 57.

  With this configuration, the waste straw holding and conveying mechanism 51 is configured such that the endless rotating chain 54 with projections is rotated by the power from the engine, so that the stocker side of the harvested cereal rice cake received by the guide basket 53 from the feed chain 32 is controlled. Then, it is sandwiched between the guide rod 53 and the endless rotating chain 54 with a projection, and is conveyed toward the waste brazing apparatus 5. When the endless rotating chain 56 is rotated by the power from the engine, the waste wall locking and conveying mechanism 52 is engaged with each locking claw on the tip side of the harvested cereal culm that has passed through the dust feed port 31 by the conveyance of the feed chain 32. 55 is locked, and the tip side is conveyed toward the waste straw treatment apparatus 5.

  The guide rod 53 is constituted by a fixed guide 58 made of a round pipe material, a movable guide 59 made of a round bar material slidably fitted in the fixed guide 58, and the like. Then, a supply state in which the stock source side of the harvested cereal grains conveyed by the waste straw holding and transporting mechanism 51 is caused to flow down toward the waste straw processing apparatus 5 by an operation of moving the movable guide 59 with respect to the fixed guide 58, and the waste straw processing apparatus It is possible to switch to a non-supply state in which the upper part of 5 is passed.

  The waste straw processing apparatus 5 includes a shredding mechanism 60 therein. The shredding mechanism 60 is configured by mounting a plurality of disc cutters 63, 64 at a predetermined interval on a pair of front and rear rotating shafts 61, 62 installed in the left-right direction. Power from the engine is transmitted to the shredding mechanism 60 via a threshing clutch or the like. At the upper part of the waste straw processing apparatus 5, an open posture that enables the supply of the waste straw to the front and rear shredding mechanisms 60, and a closed posture that prevents the supply and guides the waste straw to the rear of the aircraft. Is provided with a lid 65 configured to be switchable in posture.

  With the above configuration, by switching the guide rod 53 to the supply state and switching the cover body 65 to the open position, the discharge state of the discharge wall is cut into the cut discharge state in which the discharge wall is cut and released to the outside of the machine. Can be. Further, by switching the guide rod 53 to the non-supply state and switching the lid 65 to the closed posture, the discharge state of the discharge wall can be changed to a long wall discharge state in which the discharge wall is discharged outside the machine. it can.

  As shown in FIG. 4, the supply port 30 of the threshing unit 22 is located between the front wall 66 of the lower case 20 and the front wall 36 of the upper case 21, and the end of the front walls 66, 36 on the side of the holding and conveying mechanism. From the left end portions 66A and 36A, which are portions, are formed in a substantially arc shape substantially along the receiving net 29 and recessed toward the right side wall 67 of the lower case 20 located on the opposite side of the holding and conveying mechanism 26. is there. The shape of the supply port 30 is such that the upper edge 30A has a lower right end portion 30a located on the side away from the holding and conveying mechanism 26, and the lower edge 30B is lower than the surface 29A of the receiving net 29. Further, by setting the right edge 30C farthest from the holding and conveying mechanism 26 so as not to be positioned on the right side of the machine body relative to the receiving net 29 so that it is not positioned below, the tip side of the harvested grain culm is handled from the supply port 30. It moves smoothly between the barrel 28 and the receiving net 29.

  By the way, when the cutting and conveying unit 3 is configured to have two frames and four lines as described above, when the three or four crops are harvested, the pulling frame 17 acting on the two crops is the pulling frame 17. The pulling device 13 included in the machine causes the crop culm located on one end of the left and right sides of the aircraft to be scraped more toward the left and right central side of the aircraft than the crop culm located on the left and right central side of the aircraft. Become. Therefore, the crop culm on the left and right end sides has a higher cutting position by the cutting device 14 than the crop culm on the left and right center side, and the length after cutting is shortened. As a result, since the length of the tip side which is a granulation part becomes long as the whole harvested cereal mash which the harvesting conveyance part 3 conveys toward the threshing apparatus 4, in threshing processing, the inside of the threshing part 22 It is necessary to set the length of the cutting side of the harvested cereal rice cake to be supplied to the deeper handle that is longer than the normal length.

  And when the handling depth in the threshing process is set to the depth handling corresponding to the two-frame four-row cutting specification deeper than usual as described above, the dust outlet 31 of the threshing portion 22 is, for example, at its upper edge If the height position of the right end side portion and the position of the right end edge in the left-right direction of the fuselage are formed to be the same as or substantially the same as the supply port 30, it has moved between the handling cylinder 28 and the receiving net 29. When the tip side of the harvested cereal pod (the tip side of the waste straw) comes out from between the handling cylinder 28 and the receiving net 29 in an arcuate posture along the receiving net 29, the end on the tip side Is easily caught on the upper edge of the dust exhaust port 31, and when it comes out of between the handling cylinder 28 and the receiving net 29 and returns to its side position from the arcuate position along the receiving net 29 by its own weight. The end of the tip side is easily caught on the right end edge of the dust outlet 31.

  Therefore, as shown in FIG. 5, in the threshing device 4, the right end portion 31 a located on the side away from the sandwiching and conveying mechanism 26 in the upper edge 31 </ b> A of the dust feeding port 31 is replaced with the right end of the upper edge 30 </ b> A of the supply port 30. A lower edge 68A of the upper rear wall 68 in the lower case 20 set so as to be positioned above the side portion 30a and a right end portion 37a of the lower edge 37A of the rear wall 37 of the upper case are formed. Further, the right side wall 67 of the lower case 20 that is the right side wall of the threshing portion 22 is erected in a vertical posture at a position on the outer right side of the machine body relative to the receiving net 29, and the dust feeding port is formed by the inner surface 67 </ b> A of the right side wall 67. The right end edge 31B of 31 is formed.

  By forming the upper edge 31A and the right end edge 31B of the dust delivery port 31 in this way, the height position of the right end side portion 31a at the upper edge 31A of the dust delivery port 31 is set to the right end side at the upper edge 30A of the supply port 30. The right end edge 31B of the dust feed port 31 is located above the height position of the portion 30a, and is located at a position farther from the holding and conveying mechanism 26 than the receiving net 29 in the left-right direction of the machine body.

  That is, since the opening area of the right end portion located at the tip end side of the harvested grain culm at the dust feeding port 31 is expanded upward and rightward, it has moved between the handling cylinder 28 and the receiving net 29. Even if the tip side of the harvested cereal cocoon (the tip side of the waste straw) comes out from between the handling cylinder 28 and the receiving net 29 in an arcuate posture along the receiving net 29, the end on the tip side is Even if it becomes difficult to get caught on the upper edge 31A of the dust exhaust port 31, and it comes out of between the handling cylinder 28 and the receiving net 29, and it returns from its arcuate attitude along the receiving net 29 to its sideways attitude due to its own weight. The end portion on the tip side is not caught by the right end edge 31B of the dust outlet 31.

  As a result, it is possible to effectively clog the exhaust fan around the dust outlet 31 due to the tip end of the exhaust fan being caught on the upper edge 31A or the right edge 31B of the dust outlet 31. Can be suppressed.

  As shown in FIGS. 5, 6, and 8 to 11, on the right side wall 67 of the lower case 20, a guide for guiding the end portion on the side of the waste straw tip that comes out from between the handling cylinder 28 and the receiving net 29. The plate 69 is attached so that the right side of the plate 69 extends to the right rear side (spreading backward) and the right end side 39a of the rear end portion 39A of the support frame 39 and the right end edge 31B of the discharge port 31 are located on the rear side of the machine body. It is.

  That is, when the tip side of the waste straw that has come out between the handling cylinder 28 and the receiving net 29 returns to the lying down attitude from the arcuate attitude along the receiving net 29 due to its own weight, the guide plate 69 While receiving the end of the tip side, it gradually guides toward the lower right.

  As a result, the tip side of the exhaust straw suddenly returns from the arcuate posture to the sideways posture, and a crack occurs on the tip side. The possibility of clogging can be effectively suppressed.

  As shown in FIGS. 5, 6, and 8 to 12, the processed material that flows down from the rear end 39 </ b> A toward the swing sorting mechanism 40 is rotated at the rear end 39 </ b> A of the support frame 39. Thus, the three restriction rods 70 that restrict the displacement to the right side of the swing sorting mechanism 40 that is the lower side of the rotation direction are directed from the rear end 39A toward the rear right side of the machine body at regular intervals in the left-right direction. Equipped with posture.

  That is, due to the action of each restriction rod 70, the processed material from the rear end portion 39 </ b> A (the rear end of the receiving net 29) of the support frame 39 flows down toward the swing sorting mechanism 40 so as to be uniform in the left-right direction. As a result, it is possible to satisfactorily perform wind power sorting and sieve sorting on the processed material flowing down from the rear end portion 39A of the support frame 39, and to improve sorting efficiency and sorting accuracy.

  As shown in FIGS. 6 and 7, the drainer pinching and conveying mechanism 51 is configured such that a drive conveyance unit 71 including an endless rotating chain 54 with a protrusion is vertically moved with respect to a guide rod 53 using a drive shaft 72 as a fulcrum. The oscillating displacement is made possible. In addition, a tension spring 74 that swings and urges the drive conveyance unit 71 in the upward direction is installed over the front and rear intermediate portion of the drive conveyance unit 71 and the fixed frame 73 located at the upper rear end of the threshing unit 22. A bracket 75 and a linkage member 76 are erected on the front end portion of the drive conveyance unit 71. The bracket 75 is formed with a long hole 75 </ b> A that restricts the vertical swing range of the drive conveyance unit 71 by contact with a fixing pin 77 provided in the fixed frame 73. The linkage member 76 contacts the upper frame 78 of the upper case 21 and is pressed downward as the upper case 21 swings from the open position to the closed position. By this pressing, the drive conveyance unit 71 swings downward from the maintenance position away from the guide rod 53 to the holding conveyance position close to the guide rod 53 against the action of the tension spring 74.

  In other words, in the handle cylinder open state in which the upper case 21 is swung from the closed position to the open position, the drive conveyor 71 can be opened in the maintenance position even in the waste straw holding and conveying mechanism 51. Maintenance can be performed on the waste straw holding and conveying mechanism 51 together with maintenance on the receiving net 29 and the like.

  As shown in FIGS. 7 and 13, in the guide rod 53, a downward opening 58 </ b> B is formed immediately before the support portion 58 </ b> A at the rear end portion of the fixed guide 58, and an engagement end 79 </ b> A is formed in the opening 58 </ b> B. A leaf spring 79 to be engaged is attached. On the other hand, the movable guide 59 has its rear end portion 59A bent downward. The lower edge of the rear end side is provided with one groove 59B, and the lower edge of the front end side thereof is provided with three grooves 59C positioned at a predetermined interval in the front-rear direction, and the sliding direction of the movable guide 59 It is formed so as to extend along the direction orthogonal to

  Accordingly, when any of the groove portions 59B and 59C of the movable guide 59 is opposed to the opening 58B of the fixed guide 58 by gripping the rear end portion 59A of the movable guide 59 and sliding the movable guide 59, the leaf spring By the action of 79, the movable guide 59 can be fixed at the operation position where any one of the grooves 59B, 59C and the opening 58B of the fixed guide 58 face each other. The state in which the groove portion 59B on the rear side of the movable guide 59 is opposed to the opening 58B of the fixed guide 58 is the supply state of the guide rod 53, and any one of the groove portions 59C on the front side of the movable guide 59 is the opening of the fixed guide 58. The state facing 58B is the non-supply state of the guide rod 53. That is, when the guide rod 53 is not supplied, the extension length of the movable guide 59 can be changed in three stages.

  In addition, since the movable guide 59 has a substantially D-shaped cross section at the positions where the grooves 59B and 59C are formed, the engaging end 79A of the leaf spring 79 is engaged with any of the grooves 59B and 59C. In the fixed state, the rear end portion 59A of the movable guide 59 is gripped, and the movable guide 59 is rotated around its axial center, whereby the engagement of the leaf spring 79 from any one of the groove portions 59B and 59C. The mating end 79A can be easily detached, and the sliding operation of the movable guide 59 can be made possible.

  That is, it is possible to easily switch the supply state and non-supply state of the guide rod 53 by operating the movable guide 59.

  As shown in FIGS. 4 and 5, the threshing device 4 is equipped with a lock mechanism 80 that fixes the upper case 21 in the closed position, and a pair of front and rear dampers 81 and 82 that assist in opening and closing the upper case 21. is there.

  The locking mechanism 80 includes a fixing pin 83 provided in the front-rear direction on each of the front wall 66 and the upper rear wall 68 of the lower case 20, and a front-rear support shaft 84 on each of the front wall 36 and the rear wall 37 of the upper case 21. Corresponding to the engagement arm 85 equipped to enable swing operation as a fulcrum, the front and rear operation rod 86 installed over the operation side end of the front and rear engagement arm 85, and the front and rear engagement arm 85 And a pair of front and rear tension springs 87 that engage and urge toward the fixed pin 83.

  That is, by operating the operating rod 86 so that the front and rear engaging arms 85 are separated from the fixing pin 83 against the action of the tension spring 87, the locking of the upper case 21 by the locking mechanism 80 is released. Thus, the upper case 21 can be swung from the closed position to the open position.

  When swinging the upper case 21 from the open position to the closed position, the guide portion 85A formed on the engagement end side of the front and rear engagement arms 85 contacts the fixing pin 83 and engages the engagement arm 85. Are configured to guide the engagement.

  The front damper 81 is constructed over the front wall 66 of the lower case 20 and the front wall 36 of the upper case 21. The rear damper 82 is installed over the upper rear wall 68 of the lower case 20 and the rear wall 37 of the upper case 21. The front and rear dampers 81 are set so that their upper fulcrum positions coincide with each other and their lower fulcrum positions are different when viewed from the front-rear direction of the fuselage, and the tilt angle of the rear damper 82 to the left is set. The front damper 81 is equipped so as to be larger than the leftward tilt angle. Thereby, in the state where the upper case 21 is located in the vicinity of the closed position, the rear damper 82 is less likely to work than the front damper 81.

  That is, in the state where the upper case 21 is located in the vicinity of the closed position, the action of the tension spring 74 that swings and urges the drive conveying unit 71 of the discharge wall holding and conveying mechanism 51 in the upward direction is exerted. By making the damper 82 equipped on the rear side less likely to work than the front damper 81, the balance of the front and rear of the upward urging force applied to the upper case 21 in the vicinity of the closed position is achieved. Thus, the upper case 21 can be easily opened and closed.

    [Another embodiment]

[1] The threshing device 4 may be configured to be mounted on a harvester.

[2] The other end 31B of the discharge port 31 that is farthest from the holding and conveying mechanism 26 is located farther from the holding and conveying mechanism 26 than the receiving net 29, and the holding and conveying mechanism 26 in the threshing unit 22 is not provided. You may form so that it may be located in the position near the clamping conveyance mechanism 26 rather than the inner surface 67A of the side wall 67 of the side part side.

  The present invention can be applied to a threshing apparatus mounted on a self-removing combine harvester or a harvester.

DESCRIPTION OF SYMBOLS 22 Threshing part 26 Nipping conveyance mechanism 27 Support shaft 28 Handling cylinder 29 Receiving net 30 Supply port 31 Discharge port 31A Upper edge 31a One end side part on the side away from the clamping conveyance mechanism 30A Upper edge 30a One end side part on the side away from the clamping conveyance mechanism 31B One end edge farthest away from the nipping and conveying mechanism 67 Side wall on the side where the nipping and conveying mechanism is not provided 67A Inner surface 39 Support frame 39A Rear end portion 39a One end side portion 69 on the side away from the nipping and conveying mechanism 69 Guide plate

Claims (3)

On one side of the threshing unit, a holding conveyance mechanism is provided that holds the stock side of the harvested cereal rice cake and conveys the harvested cereal rice cake in a lying position,
Inside the threshing section, a handling cylinder that rotates around a support shaft along the conveyance direction of the clamping conveyance mechanism and a receiving net that covers the lower side of the treatment cylinder,
By the holding and conveying mechanism, the tip side of the harvested cereal pod is supplied between the handling cylinder and the receiving net from a supply port formed at the front end of the threshing portion, and is formed at the rear end of the threshing portion. A threshing device configured to discharge from an outlet,
The height position of the one end side portion located on the side away from the holding and conveying mechanism at the upper edge of the discharge port is the height position of the one end side portion located on the side away from the holding and conveying mechanism at the upper edge of the supply port. The discharge port is formed so that one end edge of the discharge port that is farthest from the holding and transporting mechanism is positioned at a position farther from the holding and transporting mechanism than the receiving net. Some threshing equipment.   The threshing apparatus according to claim 1, wherein a side wall on the other side portion side where the sandwiching and transporting mechanism is not provided in the threshing unit is erected in a vertical posture, and the one end edge of the discharge port is formed by an inner surface of the side wall. . A support frame for supporting the receiving net;
Equipped with a guide plate so as to span one end side portion located on the side away from the holding and conveying mechanism at the rear end portion of the support frame and the one end edge of the discharge port,
The threshing apparatus according to claim 1 or 2, wherein the posture of the guide plate is set to a rearwardly inclined posture that is located on the rear side of the threshing portion toward the one end edge side of the discharge port in the guide plate.

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