JP2011177084A - Upper part structure of threshing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable the swinging operation of a dust-sending valve to be carried out well by preventing the coiling of grain culms and long grain culm fragments around a cooperation link. <P>SOLUTION: A plurality of the dust-sending valves 57 for guiding a treating material to the downstream side of a threshing treatment direction accompanied with the rotation of a threshing cylinder 21 is arranged in a raw at a prescribed interval in the threshing treatment direction in the inner face side of a ceiling plate 48 covering the upper part of the threshing cylinder 21, and each of the dust-sending valves 57 is synchronously linked by a synchronous link 61 so as to enable the simultaneous swinging operation centering each swinging fulcrum 60 set at the same position in the rotating direction of the threshing cylinder 21. An extended part 48A extended outward from the ceiling plate 48 is formed in the ceiling plate 48 so as to have a storing space S3, and the extended part 48A is formed so that the synchronous link 61 may be stored in a state in which the synchronous link 61 positions at the outside of the extension line L extended from the inner surface part 48B of the extended part 48A in the ceiling plate 48, formed at the upstream side in the rotation direction of the threshing cylinder 21, along the guiding direction of the treated product by the inner surface part 48B. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention includes a top plate that covers an upper portion of a handling cylinder that rotates around an axis along the threshing treatment direction, and the top plate has an inner surface that is processed as the handling cylinder rotates. A plurality of dust feeding units configured to function as a guide surface that flows and guides in the rotational direction of the top plate, and guides the processed material to the lower side in the threshing direction in accordance with the rotation of the barrel on the inner surface side of the top plate. The valves are aligned and arranged at a predetermined interval in the threshing direction, and the plurality of dust feeding valves can be operated at the same time around the respective fulcrum supporting points set at the same position in the rotation direction of the cylinder. It is related with the upper structure of the threshing apparatus which is interlockingly connected through the linkage link.

  In the upper structure of the threshing apparatus as described above, a linkage link that interlocks and links a plurality of dust feeding valves so as to be simultaneously swingable is provided along the inner surface of the top plate that guides the processed material in the direction of rotation of the barrel. It has been considered to configure such a configuration (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 08-308365

  In the above configuration, since the linkage link is provided inside the top plate where the plurality of dust delivery valves are located, the plurality of dust delivery valves by the linkage link are compared with the case where the linkage link is provided outside the top plate. Can be easily linked. However, since the linkage link is located in the flow area of the processed material in which the processed material flows in the rotation direction of the cylinder as the handling cylinder rotates, the cereal grains or the long cereal pieces included in the processed article are linked. There was a risk that the entanglement of the link would interfere with the swinging operation of the dust delivery valve.

  An object of the present invention is to prevent the entanglement of cereal grains and long cereal pieces to the linkage link so that the dust feeding valve can be favorably swung.

In the first problem solving means of the present invention,
A top plate that covers the upper part of the barrel that rotates about the axis along the threshing treatment direction,
The top plate is configured so that its inner surface functions as a guide surface that guides a processed material in a rotating direction of the handling cylinder as the handling cylinder rotates.
On the inner surface side of the top plate, a plurality of dust feeding valves that guide the processed material to the lower side of the threshing processing direction along with the rotation of the handling cylinder are arranged and arranged at predetermined intervals in the threshing processing direction,
Threshing in which the plurality of dust feeding valves are interlocked and connected via linkage links so as to enable simultaneous swinging operations around respective swinging fulcrums set at the same position in the rotation direction of the barrel. In the superstructure of the device,
On the top plate, an overhanging portion that protrudes to the outside of the top plate is formed so as to have a storage space for storing the linkage link,
The linking link extends outside an extension line extending from the inner surface portion of the top plate formed on the upper side of the projecting portion of the top plate in the direction of rotation of the handle cylinder along the guide direction of the workpiece by the inner surface portion. It is formed so as to accommodate the linkage link in a state where is located.

  According to this problem solving means, the processed product flows in the rotating direction of the handling cylinder along the inner surface of the top plate as the handling cylinder rotates while providing the linkage link inside the top plate. The linkage link can be located at a position deviating from the flow region. Thereby, the entanglement to linkage links, such as a grain basket and a long grain cake piece contained in a processed material, can be prevented.

  As a result, the simultaneous swinging operation of each dust delivery valve can be performed satisfactorily, and the threshing treatment time should be adjusted appropriately according to the threshing property of the crop to be harvested by the simultaneous swinging operation of each dust delivery valve. Can do.

  By the way, the adjustment of the threshing treatment time is, for example, when harvesting crops with good threshing properties such as long grain rice, by increasing the feed amount to the lower side of the threshing treatment direction of the processed matter by each dust feeding valve. By shortening the time, grain damage due to excessive threshing can be prevented. For example, when harvesting crops with poor threshing properties, such as late-stage rice, the amount of processing by each dust-feeding valve to the lower side of the threshing direction is reduced to increase the threshing time. Occurrence of degranulation can be prevented.

In the second problem solving means of the present invention, in the first problem solving means,
The linkage end of the plurality of dust feed valves on the upper side in the direction of rotation of the barrel is interlocked by the linkage link,
The projecting portion is formed so as to project toward the laterally outer side of the top plate on the upper side in the rotation direction of the barrel.

  According to this problem solving means, since the projecting portion is projected in the direction opposite to the flow direction of the processed material, when projecting toward the lateral outer side on the upper side of the top plate or on the lower side in the barrel rotation direction, In comparison, it is possible to more reliably prevent the processed material from flowing into the storage space (the internal space of the overhanging portion). Thereby, the entanglement to linkage links, such as a grain basket and a long grain cake piece contained in a processed material, can be prevented more certainly.

  As a result, the simultaneous swinging operation of each dust delivery valve can be performed better, and the adjustment of the threshing treatment time according to the threshing property of the crop to be harvested by the simultaneous swinging operation of each dust delivery valve is more appropriate. It can be carried out.

In the third problem solving means of the present invention, in the first or second problem solving means,
An operation lever that enables manual swing operation from the upper side of the threshing processing direction of the plurality of dust feeding valves,
The operation lever is connected to a rocking fulcrum of a dust feed valve located second from the upper side in the threshing processing direction among the plurality of dust feed valves.

  According to this problem solving means, it is possible to simultaneously swing and operate the dust feeding valves with a simple and inexpensive configuration that does not use an actuator such as an electric motor or a hydraulic cylinder. In addition, the length of the operating lever that extends from the swinging fulcrum toward the upper side of the threshing processing direction compared to the case where the operating lever is connected to the swinging fulcrum of the dust feeding valve located on the uppermost side in the threshing processing direction. The length can be increased, and the operating force required for simultaneous swinging operation of each dust delivery valve can be reduced. In addition, as described above, it is possible to prevent the entanglement of the linkage links such as cereals and long cereal pieces, so that an increase in the operation load due to the entanglement of the cereals and long cereal pieces to the linkage links is avoided. Can do.

  Therefore, it is possible to perform the simultaneous swinging operation of each dust feeding valve with good operability while having a simple and inexpensive configuration of manual type.

In the fourth problem solving means of the present invention, in the third problem solving means,
The operation lever is configured to be fixed at an arbitrary operation position with a fixing bolt with an operation portion.

  According to this problem solving means, the operation lever can be easily and firmly fixed at an arbitrary operation position. In other words, when a spring plate is used as the operation lever and the operation lever is engaged and held at an arbitrary operation position by the elasticity of the spring plate, when the threshing load increases, Although there is a risk that the engagement and holding at the operation position is unexpectedly released, in this problem solving means, the operation lever can be firmly fixed to an arbitrary operation position with a fixing bolt, so that the threshing load increases. Even so, the operation lever can be held at an arbitrary operation position against the threshing load.

  As a result, the operation state of each dust delivery valve set by the operation lever can be stably maintained regardless of the threshing load, and the appropriate threshing treatment by the threshing treatment time adjusted according to the threshing property etc. of the crop to be harvested Can be performed stably.

In a fifth problem solving means of the present invention, in any one of the first to fourth problem solving means,
For reinforcement formed so as to be joined to at least a top plate portion located between the dust feeding valve located on the uppermost side in the threshing processing direction and the dust feeding valve located second from the upper side in the threshing processing direction. The cover member is detachably attached to the top plate.

  According to this problem solving means, during threshing, the processed material that is generated in large quantities on the upper side of the threshing treatment direction that supplies unthreshed cereal meal is second from the uppermost side of the threshing processing direction and the upper side of the threshing treatment direction. A large amount is placed on the top plate located between the dust feeding valve on the uppermost side in the threshing processing direction and the second dust feeding valve from the upper side on the threshing processing direction. Even if the processed product comes into contact with the top plate and the top plate portion becomes worn, a cover member is attached to the top plate portion, so that a large amount of processed product comes into contact with the top plate portion violently. The generation | occurrence | production of the tear in the said top-plate part resulting from doing can be suppressed effectively.

  When the top plate portion is torn due to long-term use, the cover member can be replaced with a new one so that it can be easily and inexpensively repaired without replacing the top plate.

  As a result, threshing equipment can be used over a long period of time, especially for late-stage rice that has a high yield and has poor threshing properties and long slimming, which can adversely affect the durability of the top plate. It can be made suitable for use in areas where many crops are harvested.

According to a sixth problem solving means of the present invention, in the fifth problem solving means,
The cover member is formed so as to be joined from the outside to the upper side portion in the threshing processing direction of the top plate, and a contact plate that reinforces the joint portion of the cover member with the top plate portion is joined to the cover member. .

  According to this problem solving means, not only the top plate portion located between the dust feeding valve on the uppermost side in the threshing processing direction and the second dust feeding valve from the upper side on the threshing processing direction, but also the upper side in the threshing processing direction on the top plate. It is possible to effectively suppress the occurrence of tearing caused by a large amount of processed material coming into contact with the side. Moreover, the top plate portion located between the dust feeding valve on the uppermost side in the threshing processing direction and the second dust feeding valve from the upper side on the threshing processing direction has a triple structure by the top plate, the cover member, and the plate. As a result, it is possible to more effectively suppress the occurrence of tearing in the top plate portion resulting from the intense contact of a large amount of processed material with the top plate portion.

  And, if it breaks in the threshing direction upper side of the top plate after long-term use, replace the cover member with a new one together with this plate, easily and inexpensively without replacing the top plate Can be repaired. Moreover, since the cover member is joined from the outside to the upper side of the top plate in the threshing direction, it is necessary to replace the cover member when the cover member is joined to the inside of the top plate. The trouble of removing a plurality of dust delivery valves can be eliminated.

  As a result, the threshing device can be used for a longer period of time, and there are many late-stage rice, etc. that have a high yield and have poor threshing properties and a long slimming, which can adversely affect the durability of the top plate. It can be made more suitable for use in harvesting areas.

It is a left view of a full throw type combine combine. It is a top view of a full throwing type combine combine. It is a vertical left side view of a threshing apparatus. It is a top view of a threshing apparatus. It is a vertical front view which shows the upper structure of a threshing apparatus. It is a vertical front view which shows the upper structure of the threshing apparatus which decomposed | disassembled one part. It is a partially longitudinal rear view of a threshing apparatus. It is a perspective view of the threshing apparatus in the state where the threshing cover is opened. It is a cross-sectional top view of the principal part which shows the opening / closing structure of a threshing cover. It is a vertical front view of the principal part which shows another embodiment formed so that an overhang | projection part may be extended toward the upper direction of a top plate. It is a vertical front view of the principal part which shows another embodiment formed so that an overhang | projection part might be projected toward the lateral outer side of the lower side of the treatment cylinder rotation direction in a top plate.

  Hereinafter, as an example of an embodiment for carrying out the present invention, an embodiment in which the upper structure of a threshing apparatus according to the present invention is applied to an all-throw-in type combine that is an example of a combine will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the all-throw-in type combine combines a plurality of steel materials such as a square pipe material to form a vehicle body frame 1, and a riding operation unit in a front right side region of the vehicle body frame 1. 2 is formed. A pair of left and right crawler type traveling devices 3 are provided at the lower part of the body frame 1. At the front end portion on the left side of the vehicle body frame 1, a cutting and conveying unit 4 that harvests and conveys crop culm such as paddy rice, wheat, or rapeseed, which is located in front of the vehicle body during work travel, is provided with a first axial center P <b> 1 facing left and right. It is connected so as to be able to swing up and down with fulcrum as a fulcrum. The left half of the vehicle body frame 1 receives the harvested cereals (hereinafter referred to as non-threshing cereals) conveyed by the reaping and transporting unit 4 and performs a threshing process, and selects the processed products obtained by the threshing process. A threshing device 5 for processing is mounted. On the right rear portion of the vehicle body frame 1, a bagging device 7 that stores the single-grained grains carried out from the threshing device 5 by the lifting screw 6 and enables the bagging into the bag is mounted.

  The boarding operation unit 2 includes a control lever 9 and the like on a front panel 8 erected on the front end portion thereof. A side panel 10 erected at the left end portion of the boarding operation unit 2 is provided with a main transmission lever 11 and an auxiliary transmission lever 12. A driver's seat 13 is provided in the rear part of the boarding driver 2. The control lever 9 functions as an operating tool for steering the vehicle body by a swinging operation in the left-right direction, and functions as an operating tool for lifting the cutting and conveying unit by swinging in the front-rear direction.

  The left and right crawler type traveling devices 3 are configured to switch between a straight traveling state in which they operate at a constant speed and a turning state in which they are differentially operated based on a swinging operation of the control lever 9 in the left-right direction.

  As the vehicle body travels, the cutting and conveying unit 4 separates the uncut cereals into cereals that are to be harvested and cereals that are not to be harvested by the dividers 14 provided at the left and right ends of the front part. Further, the rotary reel 15 disposed above the front part of the cutting and conveying unit 4 is scraped with the tip side of the harvested culm facing backward, and the harvesting target is collected by the clipper type cutting device 16 provided at the bottom of the cutting and conveying unit 4. Cut the grain side of the grain and harvest the harvested grain. The auger 17 disposed behind the cutting mechanism 16 gathers unthreshed cereals to a predetermined place in the left-right direction and feeds them backward, and a scraping and feeding type feeder 18 constructed so as to span the threshing device 5 from the predetermined place. To supply unthreshed cereal meal to the threshing device 5.

  The lifting / lowering swinging of the cutting and conveying unit 4 is performed by an expansion / contraction operation of a hydraulic lifting cylinder 19 installed over the body frame 1 and the feeder 18. The elevating cylinder 19 is configured to expand and contract based on a swinging operation of the control lever 9 in the front-rear direction. That is, cutting height adjustment for changing the height position of the cutting mechanism 16 relative to the uncut grain cereal can be performed by swinging the control lever 9 in the front-rear direction to extend and retract the lifting cylinder 19.

  As shown in FIGS. 1 to 3, in the threshing device 5, a threshing unit 5 </ b> A that performs threshing processing on the unthreshed cereal straw supplied by the feeder 18, and a sorting unit that performs sorting processing on a processing object to be sorted obtained by threshing processing. 5B and a recovery unit 5C that recovers the processing object to be recovered obtained by the sorting process. In the threshing device 5, the threshing processing direction of the threshing unit 5A and the sorting processing direction of the sorting unit 5B coincide with the front-rear direction of the vehicle body, and the upper side of the threshing processing direction and the upper side of the sorting process direction are located on the front side of the vehicle body. It is set as follows.

  The threshing unit 5A is configured by arranging a bar-type handling cylinder 21 in the handling chamber 20 formed in the upper part of the threshing device 5 so as to rotate counterclockwise as viewed from the rear with the second axis P2 facing forward and backward. It is. A supply port 22 is formed in the front lower portion of the handling chamber 20 to enable the supply of unthreshed cereal mash that has been scraped and conveyed by the feeder 18 to the handling chamber 20. In the lower rear part of the handling chamber 20, a discharge port 23 is formed that enables the threshing after the threshing process (hereinafter referred to as “threshing cereal”) to be discharged from the handling chamber 20. The handling chamber 20 has a front support plate 24 and a rear support plate 25 that support the handling cylinder 21, an upper cover 26 that covers the upper part of the handling cylinder 21 from above, and a U-shape in front-rear direction that covers the handling cylinder 21 from below. A partition is formed by a receiving network 27 or the like.

  The sorting section 5B is provided with a swing sorting mechanism 29 that is sorted and swung in the front-rear direction when the eccentric cam type drive mechanism 28 provided at the rear end is operated. Further, a red pepper 30 that generates a sorting wind by rotating counterclockwise in the left side view with the third axis P3 facing left and right as a fulcrum is disposed in front of and below the swing sorting mechanism 29. The swing sorting mechanism 29 receives the processed material leaked from the receiving net 27 while sorting and swinging, and sorts the received processed product as a target to be sorted while transferring it to the lower side of the sorting direction. . The Kara 30 supplies the processed wind generated by the rotation to the processed material that has leaked from the receiving net 27 and the processed material that is being sorted by the swing sorting mechanism 29 from the upper side of the sorting process. Sorts wind power as a processed material to be sorted.

  The collecting unit 5C is formed with a first collecting unit 31 below the swinging sorting mechanism 29 on the upper side in the sorting process direction. In addition, a second collection unit 32 is formed below the lower side of the sorting process direction of the swing sorting mechanism 29. The No. 1 recovery part 31 is formed in a bottom-squeezed shape when viewed from the side, and guides the single-grained grains that have flowed down from the upper side in the sorting process direction of the swing sorting mechanism 29 to the bottom as the first thing. A first screw 33 for carrying out the first item is disposed in the left-right direction at the bottom of the first collecting unit 31. The 1st screw 33 conveys the 1st thing which flowed down to the bottom part of the 1st recovery part 31 to the feeding screw 6 connected in communication with the right end of the 1st screw 33. The No. 2 collection part 32 is formed in a bottom-constricted shape when viewed from the side, and guides the grain with branches and the like flowing down from the lower side in the sorting process direction of the swing sorting mechanism 29 to the bottom as the second item. On the bottom of the second collection part 32, a second screw 34 for carrying out the second thing is arranged in the left-right direction. The second screw 34 transports the second product flowing down to the bottom of the second recovery unit 32 to a second reduction mechanism 35 that is connected to the right end of the second screw 34.

  The second reduction mechanism 35 includes a reprocessing unit (not shown) that re-threshs the second item conveyed by the second screw 34, and lifts the second item after the threshing process by the reprocessing unit. To the swing sorting mechanism 29.

  As shown in FIG. 3, the handling cylinder 21 rotates integrally with the center shaft 36 with the scraping portion 37 and the handling processing portion 38 around the second axis P <b> 2 that is the axis of the center shaft 36. It is prepared. The central shaft 36 is constructed so as to rotate around the second axis P <b> 2 across the front support plate 24 and the rear support plate 25.

  The scraping portion 37 includes a barrel portion 39 formed in a truncated cone shape, and two helical teeth 40 are welded to the outer peripheral surface of the barrel portion 39. As a result, the scraping portion 37 rotates counterclockwise in the rear view with the second axis P2 facing in the front-rear direction as a fulcrum, so that the whole unthreatened cereals conveyed by the feeder 18 are two helical teeth 40. Thus, the supply port 22 is scraped into the inside of the handling chamber 20 and is supplied to the handling processing space S1 between the handling processing unit 38 and the receiving net 27. A disc-shaped front wall member 41 is welded to the end of the trunk portion 39 on the short diameter side so that the centers thereof coincide.

  The handling processing unit 38 includes a first middle wall member 42, a second middle wall member 43, and a rear wall member 44 formed in a disk shape. These wall members 42 to 44 are welded to the central shaft 36 in a state where they are arranged at a set interval in the front-rear direction around the second axis P2. A plurality of (for example, six) tooth-handling support members 45 are arranged on the outer peripheral portions of these wall members 42 to 44 in a front-and-rear orientation along the central axis 36 and are equidistant from the central axis 36. In such a state, they are connected so as to be arranged at regular intervals in the circumferential direction of the handling cylinder 21. Each tooth-supporting member 45 is provided with a plurality of tooth-handlings 46 so as to protrude outward from the tooth-handling support member 45 toward the outside of the treatment drum 21 so as to be arranged at a set interval in the front-rear direction. is there. As the tooth handling support member 45, a rod-shaped member such as a round bar steel material, a square bar steel material, a square pipe steel material, an angle material, or a channel material can be employed. For each tooth 46, a rod-shaped member such as a round bar steel material, a square bar steel material, a round pipe material, or a square pipe material can be employed.

  That is, the handling processing unit 38 has a bowl-like shape having an internal space S2 communicating with the handling processing space S1 between the receiving network 27 and a plurality of handling teeth 46 projecting outward. 38 are arranged in a state of being arranged with a set interval in the circumferential direction and the front-rear direction.

  As a result, the handling processing unit 38 rotates counterclockwise in the rear view with the second axis P2 facing in the front-rear direction as a fulcrum, so that the unmilled cereal grains located in the handling processing space S1 with the receiving net 27 The threshing process is performed by hitting the tooth-handling support member 45 and the tooth-handling 46 or by squeezing the tooth-handling 46, and allows the processed material obtained by the threshing process to enter the internal space S2, and the processing of the handling space S1. While stirring the product and the treated product in the internal space S2, the threshing process is performed on these treated products by striking the tooth-handling support member 45 and the tooth-handling 46, or biting the tooth-handling 46.

  And by providing internal space S2, even if it is a case where a large amount of unthreshing cereals are supplied to the handling room 20, since the internal space S2 can be used for the processing space for threshing processing, processing in processing space It is possible to avoid stagnation of objects and saturation of the processing space. As a result, the processed material leaks from the receiving net 27 without performing sufficient threshing processing due to stagnation of the processed material or saturation of the processing space, or the load required for the threshing processing increases and the handling cylinder 21 increases. It is possible to avoid inconveniences such as damage to the transmission system.

  In addition, not only the plurality of teeth handling teeth 46 but also the plurality of teeth handling support members 45 function as handling members that act on the processed material in the handling chamber, so that the threshing performance and the threshing efficiency can be improved. .

  The first middle wall member 42 is welded to the central shaft 36 so as to be positioned at the front end of the handling portion 38, and is scraped together with one end portion of each tooth handling support member 45 on the outer peripheral portion of the first middle wall member 42. The rear end of the insertion portion 37 is bolted. The second intermediate wall member 43 is welded to the central shaft 36 so as to be positioned at the front and rear intermediate portions of the handling processing portion 38, and the front and rear intermediate portions of the respective tooth handling support members 45 are disposed on the outer peripheral portion of the second intermediate wall member 43. Are connected with bolts. The rear wall member 44 is welded to the center shaft 36 so as to be positioned at the rear end of the handling processing portion 38, and the other end portion of each tooth handling support member 45 is bolted to the outer peripheral portion of the second middle wall member 43. It is.

  Each tooth-supporting member 45 is configured to be changeable in a normal posture in which the front-rear direction coincides with the front-rear direction of the treatment barrel 21 and an inverted posture in which the front-rear direction is opposite to the front-rear direction of the treatment barrel 21. It is. Then, the first and second middle wall members 42 and 43 and the rear wall member 44 are bolted so that the front and rear directions of the adjacent tooth handling support members 45 are reversed.

  Each tooth handling 46 is positioned so as to be displaced by a half pitch in the front-rear direction from the tooth handling 46 of the adjacent tooth handling support member 45 when the front and rear directions of the adjacent tooth handling support members 45 are reversed. Is set up.

  An auxiliary plate 47 is provided at the front lower part of the handling chamber 20 to receive the non-threshed cereal meal supplied to the supply port 22 and assist the scraping supply to the handling processing space S <b> 1 of the non-shedded grain meal by the scraping unit 37. It has been deployed.

  The receiving net 27 is a concave receiving net formed in a lattice shape, and receives the non-threshing cereal meal supplied to the handling space S1 between the handling cylinder 21 and assists in the threshing process by the rotation of the handling cylinder 21. While letting the cerealed grains and the branches with the branch incision obtained by this threshing process, the sawdust generated by the threshing process or the like leak to the swinging selection mechanism 29 below, Leakage to the swing sorting mechanism 29 is prevented.

  As shown in FIGS. 3 to 6, the upper cover 26 is made of a sheet metal constituted by a top plate 48 or the like that is bent so as to substantially follow the rotation locus K drawn by the tip of the tooth-handling 46. A front side plate 49 is welded to the front end of the top plate 48. A rear side plate 50 is welded to the rear end of the top plate 48. Connection plates 52 connected to a fixed frame 51 of a threshing device 5 configured by connecting a plurality of steel materials such as a square pipe material are welded to both left and right ends of the top plate 48. The left connecting plate 52 is connected to the fixed frame 51 via three hinges 53 arranged at a predetermined interval in the front-rear direction. As a result, an opening / closing operation using the fourth axis P4 in the front-rear direction, which is a common axis of the hinges 53, as a fulcrum is possible. The right connection plate 52 is provided with three fixing bolts 54 with a bar handle that are screwed into the fixing frame 51 in the front-rear direction. That is, the upper cover 26 can be fixed in a closed position by screwing each fixing bolt 54 to the fixing frame 51.

  The left and right connecting plates 52 are detachably bolted with sheet metal joint members 55 formed so as to have guide surfaces connected to the inner surface of the top plate 48 and the inner surface of the receiving net 27. The left and right seam members 55 have a four-part structure divided into four equal parts in the front-rear direction. That is, the seam member 55 which is located at the seam between the receiving net 27 and the top plate 48 and is easily worn away due to contact with the workpiece is configured to be detachable in a four-part divided structure. The treatment for wear can be performed easily and economically.

  In a state where the top of the handling cylinder 21 is covered, the top plate 48 is formed so that its inner surface functions as a guide surface that guides the processed material in the rotational direction of the handling cylinder 21 as the handling cylinder 21 rotates. . Further, on the inner surface side of the top plate 48, a guide plate 56 and a plurality of dust feeding valves 57 that guide the processed material flowing in the rotation direction of the barrel 21 along with the rotation of the barrel 21 to the lower side in the threshing direction. And equipped. The guide plate 56 is fixed to the front end portion of the top plate 48 in a predetermined guide posture.

  A reinforcing band plate 58 that is joined to the top plate 48 from the outside is welded to a predetermined position on the lower side of the top plate 48 in the direction of rotation of the handling cylinder. The same number of bosses 59 as the dust feed valves 57 are arranged in a line at a predetermined interval in the front-rear direction. In each boss 59, a vertical support shaft 60 integrally provided in the dust feed valve 57 is inserted so as to be capable of relative rotation, and is fixed to prevent it from coming off. Each dust feed valve 57 has an end on the upper side in the rotation direction of the barrel through the linkage link 61 so that simultaneous swinging operation about the support shaft 60 serving as a swing support point thereof is possible. They are linked together. Among the support shafts 60, the support shaft 60 that is located second from the upper side in the threshing processing direction is provided with an operation lever 62 that swings integrally with the dust feed valve 57 via the support shaft 60. It is attached so as to extend toward the boarding operation unit 2 located on the upper side in the processing direction. A pedestal 63 is provided on the front end side of the top plate 48 to receive and support the free end side of the operation lever 62 so as to be able to swing left and right. The pedestal 63 includes a fixing bolt 64 with a bar handle. The operation lever 62 can be fixed at an arbitrary operation position among the three operation positions by the fixing bolt 64.

  With this configuration, the operation lever 62 and the fixing bolt 64 can be operated from the boarding operation unit 2, and by operating the operation lever 62, the inner plate side of the top plate 48 is arranged at regular intervals in the threshing processing direction. The plurality of dust feeding valves 57 can be simultaneously swung around the respective support shafts 60 set so as to be located at the same position in the rotation direction of the handling cylinder 21, and by this swinging operation, threshing can be performed. It is possible to adjust the feed amount of the processed material to the lower side of the threshing processing direction by each dust feeding valve 57. Then, by fixing the operation lever 62 at any one of the operation positions with the fixing bolt 64, each dust feeding valve 57 can be fixedly held in a predetermined guide posture corresponding to the operation position of the operation lever 62.

  As a result, for example, when harvesting crops with good threshing characteristics such as long grain rice, the operation lever 62 and the fixing bolts are arranged so that the feed amount of the processed material by the dust feeding valves 57 to the lower side in the threshing direction is increased. By operating No. 64, the threshing processing time for a processed product with good threshing property can be shortened, and damage to the kernel due to excessive threshing can be prevented. Conversely, when harvesting crops with poor threshing properties, such as late-stage rice, for example, the operation lever 62 and the fixing bolt 64 are used so that the feed amount of the processed products by the dust feeding valves 57 to the lower side in the threshing direction is reduced. By operating, the threshing treatment time for a processed product with poor threshing property can be lengthened, and the occurrence of non-threshing can be prevented.

  And by attaching the operation lever 62 to the second support shaft 60 from the upper side in the threshing process direction, the operation lever 62 of the operation lever 62 is compared with the case where the operation lever 62 is attached to the support shaft 60 on the uppermost side in the threshing process direction. The length of extension from the support shaft 60 can be increased, and the operating force required for simultaneous swinging operation of the dust feed valves 57 can be reduced. Further, since the operation lever 62 can be firmly fixed by the fixing bolt 64, even if the threshing processing amount is increased and the threshing load is increased, the operation lever 62 can be held at any operation position against the threshing load. Each of the dust feed valves 57 can be stably maintained in the predetermined guide posture set by the operation lever 62, and can be appropriately adjusted according to the threshing treatment time adjusted according to the threshing property of the crop to be harvested. Threshing treatment can be performed stably.

  As shown in FIGS. 4 to 6, in order to secure the accommodation space S <b> 3 for accommodating the linkage link 61, the top plate 48 is directed toward the left lateral outer side, which is the upper side in the barrel rotation direction of the top plate 48. An overhanging portion 48A is formed. The overhang portion 48A includes a vertical plate portion 48a and a bottom surface portion 48b, and the overhang portion 48A of the top plate 48 regardless of the displacement in the left-right direction associated with the change in the posture of each dust feed valve 57 of the linkage link 61. The linkage link 61 is accommodated in a state where the linkage link 61 is positioned outside the extension line L extending along the guide direction of the processed material by the inner surface portion 48B from the inner surface portion 48B formed on the upper side in the rotation direction of the cylinder. It is formed as follows.

  As a result, while the linkage link 61 is provided on the inner side of the top plate 48 that can be directly connected to each dust feeding valve 57, the processed material moves along the inner surface of the top plate 48 as the handling cylinder 21 rotates. The linkage link 61 can be positioned at a position deviated from the flow region (region inside the extension line L) R of the processed product that flows in the rotation direction of the handle cylinder, It is possible to prevent long grain pieces and the like from being entangled with the linkage link 61. As a result, the simultaneous swinging operation of each dust feeding valve 57 by the operation lever 62 can be performed satisfactorily, and the threshing processing time corresponding to the threshing property of the crop to be harvested by the simultaneous swinging operation of each dust feeding valve 57 can be reduced. Adjustment can be performed appropriately.

  In addition, the bottom surface portion 48b of the overhanging portion 48A is configured so that the bottom surface portion 48b and the above-described inner surface portion 48B constitute a lateral V-shaped partition wall portion that partitions the flow region R of the processed material and the accommodation space S3. It is formed. As a result, it is possible to make it difficult for the processed material that flows along with the rotation of the handling cylinder 21 to flow into the accommodation space S3 from the flow region R, and the cereal and long cereal pieces included in the processed material are linked. It is possible to more reliably prevent the link 61 from being entangled.

  As shown in FIGS. 1, 2, and 4 to 6, in the front half of the top plate 48, a cover member 65 made of a sheet metal joined to the front half so as to cover the entire area of the front half from the outside is detachably bolted It is connected. The cover member 65 includes a first cover body 66 that is bent so as to be joined to an outer surface on the lower side (left side) in the handle barrel rotation direction from the overhanging portion 48 </ b> A in the front half of the top plate 48, and in the front half of the top plate 48. The second cover body 67 is configured to be divided into left and right parts, which are bent so as to be joined to the outer surface on the upper side (right side) in the rotation direction of the barrel from the overhanging portion 48A. The first cover body 66 is connected to the top plate 48 together with the left end edge portion 66 </ b> L together with the left seam member 55. The second cover body 67 is connected to the top plate 48 together with the right end edge 67 </ b> R together with the right seam member 55. The right edge portion 66R of the first cover body 66 joined to the overhang portion 48A and the left edge portion 67L of the second cover body 67 are jointly connected to the vertical plate portion 48a of the overhang portion 48A. It is. Incidentally, a joint fastening portion on the front and rear intermediate side between the right edge portion 66R of the first cover body 66 and the left edge portion 67L of the second cover body 67 receives and supports the linkage link 61 so as to be slidable. As described above, the right end portion of the front support member 68 of the left and right support members 68 provided at the two front and rear portions of the top plate 48 is coupled to the vertical plate portion 48a of the projecting portion 48A. A bulging portion 66 </ b> A that bulges upward is formed at the left and right central portions of the first cover body 66 in order to allow close contact with the top plate 48 to which the reinforcing band plate 58 is joined. A round hole 66a that allows insertion of each boss 59 is formed in a portion corresponding to each boss 59 in the bulging portion 66A.

  A first contact plate 69 made of sheet metal is welded to the left outer surface of the first cover body 66 so as to be positioned between the left edge portion 66L of the first cover body 66 and the bulging portion 66A. is there. The first abutment plate 69 is positioned on the uppermost side in the threshing processing direction with the length Lx1 in the threshing processing direction being set to the maximum guide amount of the processed product by the dust feeding valves 57 to the lower side in the threshing processing direction. Longer than the length Lxa that extends from the upper end of the dust feeding valve 57 in the rotational direction of the barrel to the upper end of the dust feeding valve 57 positioned second from the upper side in the threshing processing direction. Is set. Further, the length Ly1 in the rotation direction of the cylinder is set to a length Lya extending from the left end edge portion 66L and the bulging portion 66A of the first cover body 66.

  A second contact plate 70 made of sheet metal is welded to the right outer surface of the first cover body 66 so as to be positioned between the bulging portion 66A of the first cover body 66 and the right edge portion 66R. is there. The second pressing plate 70 is set to have the same length Lx2 in the threshing processing direction as the length Lx1 of the first pressing plate 69 in the threshing processing direction. Further, the length Ly2 in the rotation direction of the cylinder is set to a length Lyb extending between the bulging portion 66A of the first cover body 66 and the right edge portion 66R.

  A third contact plate 71 made of sheet metal is welded to the outer surface of the second cover body 67 so as to be positioned between the left edge portion 67L and the right edge portion 67R of the second cover body 67. is there. The 3rd present board 71 sets the length Lx3 of the threshing process direction to the same length Lx1 of the threshing process direction of the 1st present board 69 and the length Lx2 of the 2nd present board 70 of the threshing process direction. It is. Further, the length Ly3 in the handling cylinder rotation direction is set to a length Lyc extending between the left edge portion 67L and the right edge portion 67R of the second cover body 67.

  With this configuration, during the threshing process, a large amount of processed material generated on the upper side in the threshing process direction of the threshing unit 5A that supplies unthreshed cereals is intensely generated in the first half of the top plate 48 as the handling cylinder 21 rotates. Even if the first half of the top plate 48 comes to wear due to contact, the cover member 65 is attached to the front half of the top plate 48, so that a large amount of processed material is attached to the first half of the top plate 48. It is possible to effectively suppress the occurrence of tearing in the front half of the top plate 48 due to the intense contact.

  Further, a large amount of processed material generated on the upper side in the threshing processing direction is guided between the dust feeding valve 57 on the uppermost side in the threshing processing direction and the second dust feeding valve 57 from the upper side on the threshing processing direction. Thus, a large amount of processed material is placed on the top plate portion 48C on the upper side of the threshing processing direction located between the dust feeding valve 57 on the uppermost side in the threshing processing direction and the second dust feeding valve 57 from the upper side on the threshing processing direction. Even if the top plate portion 48C is more intensely contacted and wears more violently, the top plate portion 48C is made of the top plate 48, the cover member 65, each of the contact plates 69 to 71, or a reinforcing band plate. Therefore, it is possible to effectively suppress the occurrence of tearing in the top plate portion 48C resulting from a large amount of processed material coming into intense contact with the top plate portion 48C.

  When the front half of the top plate 48 is torn during long-term use, the operation lever 62 is removed, the bolt connection location of the cover member 65 is released, and the cover member 65 is removed from each of the contact plates 69 to 71. By replacing the base plate 63 with a new one, the top plate 48 can be easily and inexpensively restored.

  As shown in FIGS. 1 and 7, a gas damper 72 that assists the opening operation of the upper cover 26 is provided over the rear support plate 25 and the rear side plate 50 of the upper cover 26. Even when the gas damper 72 is in the maximum extended state in which the opening degree of the upper cover 26 is maximized, the threshing device is more than the fourth axis P4 where the connection point Pa with the rear plate 50 is the opening / closing swing fulcrum of the upper cover 26. The connection position with the rear side plate 50 is set so as to be located on the left and right center side of the reference numeral 5.

  As shown in FIGS. 1, 2, 4, and 7 to 9, a threshing cover 73 including an inner plate 73 </ b> A functioning as a left side plate of the threshing portion 5 </ b> A is vertically installed on the upper left rear end of the fixed frame 51. These fulcrum pins 74 are connected so that an opening / closing operation with a fulcrum of the fifth axis P5 in the vertical direction, which is a common axis of each fulcrum pin 74, is possible. The fixed frame 51 is provided with two front and rear through holes 51 a and 51 b that enable locking and holding in a state where a rod 75 bent in a U-shape is placed on the fixed frame 51. The threshing cover 73 is welded with a locking piece 76 having a through hole 76a that allows the rod 75 to be inserted therethrough. When the threshing cover 73 is opened, both ends of the rod 75 are inserted into the through hole 51b on the rear side of the fixed frame and the through hole 76a on the threshing cover side, and the rod 75 is fixed to the fixed frame 51 and the threshing cover 73. Threshing cover 73 can be fixed in a predetermined opening posture.

  As shown in FIGS. 2 and 7, the right side plate 77 of the threshing device 5 has a second reduction portion 77 </ b> A formed with a second reduction port 77 a for receiving the second thing lifted by the second reduction mechanism 35. It is formed so as to protrude rightward from 77. The second reduction portion 77A is formed such that the second reduction port 77a is positioned below the second axis P2 that is the rotation center of the handling cylinder 21.

  That is, for example, when the 2nd reduction port 77a is formed above the 2nd axis P2, the 2nd thing lifted up by the 2nd reduction mechanism 35 is made into the standing part of receiving net 27, and the right side of threshing device 5 It returns to the swing sorting mechanism 29 from a relatively narrow space between the plate 77. Therefore, the second thing to be returned to the swing sorting mechanism 29 is clogged between the standing part of the receiving net 27 and the right side plate 77 of the threshing device 5, or the second thing lifted by the second reduction mechanism 35 is left and right. There is a high risk of inconvenience such as being unable to return to the swing sorting mechanism 29 in a state of being dispersed in the direction.

  On the other hand, in this threshing device 5, the second reduction port 77 a is formed below the second axis P <b> 2, so that the second thing lifted by the second reduction mechanism 35 is curved in the receiving net 27. It can be returned to the swing sorting mechanism 29 from a relatively wide space between the portion and the right side plate 77 of the threshing device 5. Thereby, it is possible to prevent clogging of the second item to be returned to the swing sorting mechanism 29 between the receiving net 27 and the right side plate 77 of the threshing device 5. In addition, the second thing lifted by the second reduction mechanism 35 can be returned to the swing sorting mechanism 29 in a state of being dispersed in the left-right direction.

  As shown in FIG. 3, the swing sorting mechanism 29 is provided with a coarse sorting grain pan 78, a chaff sheave 79, and a Strollack 80 in that order from the upper side in the sorting process direction to form a coarse sorting portion 29A. It is. In addition, a fine sorting grain pan 81 and a grain sieve 82 are arranged in that order from the upper side in the sorting process direction to form a fine sorting portion 29B.

  The chaff sheave 79 is operated by swinging an operating tool (not shown) provided on the left side of the swing sorting mechanism 29, and a plurality of the sheave sheaves 79 arranged and arranged at regular intervals in the front-rear direction in conjunction with the operation. The cha-flip plate 83 swings up and down at the same time with the support shafts 84 provided at the upper portions thereof as fulcrums, and the opening degree of the processing distribution lower path 79a formed by the adjacent cha-flip plates 83 is uniformly changed. An opening adjustment type constructed so as to be adopted is adopted. Then, the chaff sheave 79 has a gap G between the front and rear adjacent chaff plates 83 in order to promote the flow of the grain from the processing distribution lower path 79a, and the swing selection mechanism 29 is moved in the front-rear direction by the operation of the drive mechanism 28. The distance La is greater than the distance La.

  As shown in FIGS. 3 and 7, the plate-like rear support member 85 that supports the rear end of the receiving net 27 has a grain leaked from the receiving net 27 and a grain transferred by the swing sorting mechanism 29. Through a support plate 87 extending from the lower part of the rear support member 85 to the rear lower side, which prevents the occurrence of third loss due to splashing from the rear end of the swinging selection mechanism 29. It is attached. As the anti-repellent plate 86, a flexible rubber plate having a length extending from the left and right ends of the rear support member 85 is employed. The anti-repellent prevention plate 86 swings and sorts when the swing sorting mechanism 29 swings and displaces to the end so as not to obstruct the flow of sawdust from the rear end of the swing sorting mechanism 29. The arrangement is set so as to contact the rear end of the mechanism 29.

  As shown in FIGS. 1 to 3, at the lower end of the rear end of the threshing apparatus 5, a sheet metal excretion cover 88 is provided so as to cover the excretion opening 23 from the rear. The waste cover 88 guides the cereal cereals that have flowed out of the waste outlet 23 downward along with the sawdust and the like carried out to the rear of the swing sorting mechanism 29 by sieving and wind sorting, and a discharge port formed in the lower part. It is formed so as to be discharged from 89 to the outside.

    [Another embodiment]

[1] As shown in FIG. 10, the projecting portion 48 </ b> A may be formed so as to project upward from the top plate 48. Further, as shown in FIG. 11, the overhanging portion 48 </ b> A may be formed so as to protrude toward the lateral outer side of the top plate 48 on the lower side in the handling cylinder rotation direction. In these configurations as well, the overhanging portion 48A is in the direction of rotation of the cylinder of the overhanging portion 48A of the top plate 48 regardless of the lateral displacement associated with the change in the posture of each dust feeding valve 57 of the linkage link 61. The linkage link 61 is accommodated in a state in which the linkage link 61 is positioned outside the extended line L extending from the inner surface portion 48B formed on the upper side along the guide direction of the workpiece by the inner surface portion 48B.

[2] The handling cylinder 21 may be a drum type constituted by mounting a helical tooth or a tooth handling tooth on the outer periphery of a cylindrical body member. Further, the handle teeth 46 provided at the rear end portion of the handle cylinder 21 may be configured to have a receding angle located on the lower side of the handle cylinder rotation direction toward the protruding end side. Furthermore, it may be configured to rotate clockwise in the rear view with the second axial center P2 facing forward and backward.

[3] The top plate 48 may be formed so as to be curved along or substantially along the rotation locus K drawn by the tip of the tooth-handling 46.

[4] The swing operation of each dust feed valve 57 may be performed by an actuator such as an electric motor or a hydraulic cylinder.

[5] A bolt with a knob or a butterfly bolt may be adopted as the fixing bolt 64 with an operation unit.

[6] The cover member 65 can be variously changed in thickness, size, shape, configuration, and the like. For example, the top plate portion 48 </ b> C is located between the dust feeding valve 57 located on the top side of the top plate 48 in the threshing processing direction and the dust feeding valve 57 located second from the top side in the threshing processing direction. You may form so that it may join only. Further, the cover member 65 is formed so as to be joined to the top plate portion located on the upper side of the threshing processing direction from the end on the lower side of the threshing processing direction of the dust feeding valve 57 located second from the upper side of the threshing processing direction. May be. Furthermore, the cover member 65 may be formed of one sheet metal material, or may be configured in a divided structure of three or more.

[7] The thickness, size, shape, number, etc. of the contact plates 69 to 71 can be variously changed.

  The superstructure of the threshing apparatus according to the present invention can be applied to a full-pile throwing combine, a self-removing combine or a harvester.

21 Handling cylinder 48 Top plate 48A Overhang portion 48B Inner surface portion 48C Top plate portion 57 Dust feeding valve 60 Oscillating fulcrum 61 Link link 62 Operation lever 64 Fixing bolt with operation portion 65 Cover member 69 Contact plate 70 Contact plate 71 Contact plate L extension line S3 accommodation space P2 axis

Claims (6)

A top plate that covers the upper part of the barrel that rotates about the axis along the threshing treatment direction,
The top plate is configured so that its inner surface functions as a guide surface that guides a processed material in a rotating direction of the handling cylinder as the handling cylinder rotates.
On the inner surface side of the top plate, a plurality of dust feeding valves that guide the processed material to the lower side of the threshing processing direction along with the rotation of the handling cylinder are arranged and arranged at predetermined intervals in the threshing processing direction,
Threshing in which the plurality of dust feeding valves are interlocked and connected via linkage links so as to enable simultaneous swinging operations around respective swinging fulcrums set at the same position in the rotation direction of the barrel. A superstructure of the device,
On the top plate, an overhanging portion that protrudes to the outside of the top plate is formed so as to have a storage space for storing the linkage link,
The linking link extends outside an extension line extending from the inner surface portion of the top plate formed on the upper side of the projecting portion of the top plate in the direction of rotation of the handle cylinder along the guide direction of the workpiece by the inner surface portion. The upper structure of the threshing apparatus formed so that the said link link may be accommodated in the state which is located. The linkage end of the plurality of dust feed valves on the upper side in the direction of rotation of the barrel is interlocked by the linkage link,
The upper structure of the threshing device according to claim 1, wherein the overhanging portion is formed so as to protrude toward the lateral outer side of the top plate on the upper side in the rotation direction of the barrel. An operation lever that enables manual swing operation from the upper side of the threshing processing direction of the plurality of dust feeding valves;
The upper structure of the threshing device according to claim 1 or 2, wherein the operation lever is connected to a rocking fulcrum of a dust feeding valve located second from the upper side in the threshing processing direction among the plurality of dust feeding valves. .   The upper structure of the threshing apparatus according to claim 3, wherein the operation lever is configured to be fixed at an arbitrary operation position by a fixing bolt with an operation portion.   For reinforcement formed so as to be joined to at least a top plate portion located between the dust feeding valve located on the uppermost side in the threshing processing direction and the dust feeding valve located second from the upper side in the threshing processing direction. The upper structure of the threshing apparatus as described in any one of Claims 1-4 which is attached to the said top plate so that attachment or detachment is possible.   The cover member is formed so as to be joined from the outside to the upper side portion in the threshing processing direction of the top plate, and a contact plate that reinforces the joint portion of the cover member with the top plate portion is joined to the cover member. The superstructure of the threshing apparatus according to claim 5.

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