JP5128330B2 - Threshing device - Google Patents

Description

  The present invention relates to a threshing apparatus including a handling cylinder and a dust-feeding mouth processing cylinder, and more particularly to a threshing apparatus in which a receiving net is arranged around the lower part of the handling cylinder.

  As a receiving net applied to the threshing apparatus, a receiving net (for example, see Patent Document 1 below) in which a plurality of openings are formed in a flat plate member by press working, and a plurality of vertical plate members and a handling cylinder along the circumferential direction of the handling cylinder A receiving net (see, for example, Patent Document 2 below) in which a plurality of openings are formed by a plurality of steel wire members along the axial direction has been proposed.

  However, as a receiving net applied to a threshing device equipped with a handling cylinder and a dust-feeding mouth processing cylinder, while improving the threshing efficiency by the handling cylinder, unprocessed materials that could not be processed by the handling cylinder are efficiently sent. There is no receiving network that is configured to be supplied to the dust treatment cylinder.

  That is, in the front portion and the front and rear central portions of the handling cylinder, a relatively large amount of threshing including grains and swarf is generated from the cereal. Therefore, in the part of the receiving net corresponding to the front part and the front and rear center part of the handling cylinder, the threshing of a predetermined size or less of the threshing can be efficiently leaked, thereby clogging. Prevention is required.

On the other hand, in the part corresponding to the rear part of the handling cylinder of the receiving net, the dust-carrying port processing cylinder is accommodated from the handling chamber that accommodates the handling cylinder through the dust delivery opening. It is required to transfer efficiently to the processing chamber.
That is, during the threshing process by the handling cylinder, a phenomenon occurs in which the tip side of the cereal bud is divided from the stock source side (hereinafter, the tip side divided from the stock source side is referred to as a spike piece).
Among the cut pieces, those smaller than the opening of the receiving net pass through the receiving net together with threshing including grains, and leak downward. Among the cut pieces, those larger than the opening width are handled as described above. Stay in the room. The cut pieces staying in the handling chamber are swung by the handling cylinder and entangled with each other toward the rear side in the axis direction of the handling cylinder to become a lump-like untreated product containing grains. Such a lump-shaped unprocessed product deteriorates the threshing efficiency of the threshing device and causes power loss with respect to the driving force of the handling cylinder.
Accordingly, the rear portion of the receiving net is required to efficiently transfer the lump-like unprocessed material from the handling chamber to the processing chamber.

The receiving net described in Patent Document 1 is detached from the grain by a handling cylinder by making the size of the punched holes in the front and rear portions of the flat plate member larger than the size of the punched holes in the front and rear central portions. Clogging is prevented from occurring in the front portion where there is relatively much threshing, including cereal grains and sawdust.
However, since the receiving net is formed with a punching hole by pressing, the ratio of the opening area of the entire punching hole (opening ratio) to the entire area of the receiving net is increased even if the size of the punching hole is increased. There are limits to strength and processing accuracy.

On the other hand, the receiving net described in Patent Document 2 has a plurality of openings formed by the plurality of vertical plate members and the plurality of steel wire members, and is different from a receiving net formed by forming a hole in a flat plate member. Then, the aperture ratio can be increased, but on the other hand, the unprocessed mass in the form tends to stay in the handling chamber, resulting in a problem that the threshing efficiency is deteriorated.
Japanese Patent No. 3846886 Japanese Patent Laid-Open No. 11-253044

  The present invention has been made in view of the above prior art, and has a receiving net disposed in the lower periphery of the handling cylinder, and accommodates the rear side of the handling chamber in which the handling cylinder is accommodated and the dust-feed port processing cylinder. A threshing device that communicates with the front side of the processing chamber through a dust feed port, and improves the threshing efficiency of the handling cylinder while processing untreated material that could not be processed by the handling cylinder from the handling chamber. An object is to provide a threshing apparatus that can be efficiently transferred to a room.

The threshing apparatus according to the present invention has a receiving net disposed in the lower periphery of the handling cylinder, and is located on the rear side of the handling chamber in which the handling cylinder is accommodated and on the front side of the processing chamber in which the dust feed processing cylinder is accommodated. And a threshing device communicated via a dust feeding port, wherein the receiving net is viewed in the direction of the cylinder axis so as to cover a portion of the lower part of the handling drum located on the front side of the dust feeding port. A first receiving net portion formed in an arc shape and a handling cylinder so as to cover a portion of the lower part of the handling cylinder on the rear side of the first receiving mesh part and on the upstream side of the dust feeding port in the rotation direction of the handling cylinder. A second receiving net portion having an arc shape when viewed in the axial direction, and a second receiving net portion connected to the first receiving net portion, the plate surface of the first receiving net portion being a front-rear direction Each of which is a plurality of vertical plate members extending in the circumferential direction of the cylinder, and each of the vertical plate members arranged in parallel in the axis direction of the cylinder. A plurality of linear members having a substantially circular shape in cross-sectional view inserted through holes formed in the plurality of vertical plate members so as to be along the axial direction, and a plurality of linear members arranged in parallel in the circumferential direction of the barrel And the plurality of vertical plate members and the plurality of linear members form a plurality of first openings having a rectangular shape in a plan view, and the second receiving net portion has a plurality of rectangular shapes in a plan view by pressing. It has the flat plate member in which the 2nd opening of this was formed.

According to the threshing device having the above-described configuration, the grain threshed by the handling cylinder in the handling chamber falls downward through the receiving net, while the unprocessed solid matter containing the grain is sent from the rear side of the handling chamber to the dust. It is sent to the processing chamber in which the dust-feed port processing cylinder is accommodated through the mouth.
Here, in the first receiving net portion located on the front side from the dust feeding port, the receiving net has a plurality of vertical plate members each along the circumferential direction of the cylinder while the plate surface faces the front-rear direction. A plurality of linear members that are arranged in parallel in the axis direction of the cylinder and are inserted through holes formed in the vertical plate member along the axis direction of the cylinder. Are arranged in parallel in the circumferential direction. Thus, a plurality of first openings having a rectangular shape in plan view are formed in the first receiving net portion by intersecting the intersecting vertical plate members and linear members.
In addition, the receiving net is a flat plate member in a second receiving net part that covers a portion of the lower side of the handling cylinder that is behind the first receiving net part and upstream of the dust feeding port in the handling cylinder rotation direction. A plurality of second openings having a rectangular shape in plan view are formed by pressing .

As described above, in the first receiving net portion located on the front side of the dust feeding port, the vertical plate member and the linear member are crossed to form the first opening, thereby reducing the opening area of the first opening. However, the ratio (opening ratio) of the opening area of the entire punch hole to the area of the entire receiving net can be increased. In addition, the side of the first opening perpendicular to the teeth of the handle cylinder is formed of a linear member, so that it faces the teeth of the receiving mesh compared to the receiving mesh formed by pressing or the like on the flat plate member. Since the portion to be done is not flat, the effect of removing the bellflower by the tooth treatment can be enhanced. Accordingly, the threshing efficiency can be improved in the front portion where the threshing including the grains and the swarf separated from the cereal by the handling cylinder is relatively large.
Further, in the second receiving net part behind the first receiving net part, the second opening is formed in the flat plate member by press working, so that the aperture ratio is reduced compared with the first receiving net part, and the second receiving net part is solidified. Can be efficiently transferred from the handling chamber to the processing chamber via the dust feed port.

  Preferably, the receiving net extends along a circumferential direction of the barrel so as to overlap with a rotation locus of the teeth when viewed from the barrel axis direction at a position displaced from the teeth of the barrel in relation to the barrel axis direction. The partition member is provided only on the second receiving net part.

In this case, the threshing effect conveyed by the feed chain device is swung up and down by passing over the partition member, so that the threshing effect is promoted.
In addition, the partition member provided in the second receiving net portion of the receiving net along the circumferential direction of the barrel and the rotational locus of the teeth of the barrel are overlapped with each other when viewed in the axial direction of the barrel. It promotes the movement of the lump-like unprocessed material staying in the receiving mesh part toward the dust feed port on the downstream side in the circumferential direction of the cylinder due to the rotation of the cylinder, and the lump-like unprocessed substance is handled. It is loosened by being sandwiched between the teeth of the trunk and the partition member.
Therefore, it is possible to quickly transfer the lump-like untreated matter to the treatment chamber via the dust feed port without staying in the handling chamber for a long time, and to loosen the lump-like untreated matter to be sent to the treatment chamber in advance. Therefore, it is possible to improve the threshing efficiency by the handling cylinder and improve the processing efficiency by the dust outlet processing cylinder.

Preferably, the second opening, the opening width along the threshing drum circumferential direction than the first opening is large.

In this case, it is possible to prevent clogging of the receiving net by leaking the sawdust and the like that have not leaked from the first opening to clog the receiving net, and the lump-like unprocessed material is disposed on the downstream side in the handling cylinder circumferential direction. It can Rukoto to promote the movement toward the Okuchiri opening.

  More preferably, the plurality of linear members are juxtaposed at substantially equal intervals in the circumferential direction of the handling cylinder, and the plurality of vertical plate members are located on the front side and are juxtaposed at the first interval in the handling cylinder axis direction. A front vertical plate member group, a central vertical plate member group located on the rear side of the front vertical plate member group and arranged in parallel at a second interval wider than the first interval in the cylinder axis direction, and the center A rear vertical plate member group located on the rear side of the vertical plate member group and arranged in parallel at a third interval wider than the second interval in the cylinder axis direction, and the second opening is the first opening The opening area is made large in a state where the length of the side along the axis of the cylinder axis is shorter than the first rear opening defined by the rear vertical plate member group and the plurality of linear members.

In this case, the length of the side along the circumferential direction of the first barrel of the first opening in the first receiving net is substantially constant, while the length of the side along the axis of the first barrel of the first opening is rearward. It gets longer step by step as you go to the side. And the length of the side along the cylinder axis direction of the second opening is formed by the rear vertical plate member group having the longest side length in the cylinder axis direction of the first opening and the linear member. The opening area of the second opening is larger than the opening area of the rear first opening, while it is shorter than the length of the side of the rear first opening along the axis of the cylinder.
Therefore, in the first receiving net part, by providing the rear first opening which is elongated in the direction along the cylinder axis direction, it is possible to promote the movement of the waste and untreated material that does not leak from the first opening to the rear. In addition, in the second receiving net portion, the length of the side along the circumferential direction of the handling cylinder is increased as compared with the first receiving net part, so that the lump-shaped unprocessed material is removed from the handling cylinder circumference. It is possible to promote movement toward the dust feeding port on the downstream side in the direction.

According to the threshing apparatus according to the present invention, the first opening is formed by forming the first opening by intersecting the vertical plate member and the linear member in the first receiving net portion located in front of the dust feeding opening. It is possible to increase the ratio (opening ratio) of the opening area of the entire punch hole to the area of the entire receiving net while reducing the opening area. In addition, the side of the first opening perpendicular to the teeth of the handle cylinder is formed of a linear member, so that it faces the teeth of the receiving mesh compared to the receiving mesh formed by pressing or the like on the flat plate member. Since the portion to be done is not flat, the effect of removing the bellflower by the tooth treatment can be enhanced. Accordingly, the threshing efficiency can be improved in the front portion where the threshing including the grains and the swarf separated from the cereal by the handling cylinder is relatively large.
Further, on the rear side of the first receiving net part, a second opening is formed in the flat plate member by press working, so that the open area ratio is made smaller than that of the first receiving net part, and the lump-shaped unprocessed material Can be efficiently transferred from the handling chamber to the processing chamber via the dust inlet.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
FIG.1 and FIG.2 is the left view and top view of the combine 1 in one Embodiment which concerns on this invention.
As shown in FIGS. 1 and 2, the combine 1 in the present embodiment includes a machine frame 2, an engine (not shown) that is a drive source supported by the machine frame 2, and the machine frame 2. And a pair of left and right traveling devices (in this embodiment, a crawler traveling device) 10 and a cutting frame 11 supported by the main frame 2 so as to be movable up and down in front of the main frame 2. The reaping device 30, the feed chain device 20 that conveys cereals harvested by the reaping device 30 rearward on the left side of the machine frame 2, and the cereals that are conveyed by the feed chain device 20 The threshing device 40 disposed in the left portion of the machine frame 2, the sorting device 50 disposed below the threshing device 40, and the book so as to perform the threshing process A driver's seat 5 disposed in the right front portion of the frame 2 and a grain tank 6 for storing the grains selected by the sorting device 50, the grain tank 6 disposed behind the driver's seat 5. And a waste transporting device 60 that inherits the drained waste from the feed chain device 20 and transports the waste to the rear.

Here, the internal structure of the threshing apparatus 40 will be described.
FIG. 3 shows a schematic left side view of the threshing device 40 and the swing sorting device 50 in the combine 1 of FIG. 1, and FIG. 4 shows a schematic front view of the threshing device 40 in the combine 1 of FIG.
As shown in FIGS. 3 and 4, the threshing device 40 includes a handling chamber 41 defined by a threshing machine frame, and a rotating shaft 42 substantially along the vehicle front-rear direction (the grain conveying direction) in the handling chamber 41. The tooth-feeding tooth is rotated around the axis of the rotary shaft 42 substantially along the grain conveying direction so that the teeth are passed from the grain side to the tip side of the grain tip, and the feed A handling cylinder 43 for threshing the tip side of the grain basket conveyed by the chain device 20, and a receiving receiver disposed substantially concentrically with the handling cylinder 43 so as to cover at least the lowest point of the handling cylinder 43. And a net 44. The handle cylinder 43 is rotationally driven by a handle cylinder transmission shaft (not shown) having one end operatively connected to the engine and the other end operatively connected to the rotary shaft 42. Moreover, the said handling cylinder 43 has a substantially cylindrical shape, and the some handling teeth 43a are implanted by the outer peripheral surface.

  With such a configuration, the handle 43a is rotated by rotating the handle cylinder 43 around the axis of the rotating shaft 42 while the feed chain device 20 conveys the tip side of the cereal into the handle chamber 41. The grain is threshed from the cereal meal. The threshed grains, sawdust, etc. leak from the receiving net 44.

  A processing chamber 45 is formed at the rear and side of the handling chamber 41 (in the present embodiment, the Glen tank 6 side, that is, the right side), and the processing chamber 45 has a substantially cylindrical shape. A dust feeding port processing cylinder 46 is installed so that the dust feeding port processing cylinder 46 whose rotation axis is substantially parallel to the rotation shaft 42 can be driven to rotate about the rotation axis.

In the threshing apparatus 40 of the present embodiment, the rear side of the handling chamber 41 and the front side of the processing chamber 45 are communicated with each other via a dust feeding port 47.
That is, a dust feeding port 47 is opened on the rear right side surface of the handling cylinder case forming the handling chamber 41 and the front left side surface of the processing cylinder case forming the processing chamber 45, thereby the handling chamber. 41 and the processing chamber 45 communicate with each other.
A semicircular processing cylinder net 48 is provided below the dust supply port processing cylinder 46 so as to cover the lower periphery of the dust supply process cylinder 46.

  With such a configuration, unprocessed materials such as branch raft adhering grains that could not be processed by the handling cylinder 22 are transferred from the handling chamber 41 into the processing chamber 45 through the dust feeding port 47 and rotated. Only the processed material leaks through the holes (mesh) provided in the processing cylinder net 48 after being processed by the driven dust feed processing cylinder 46.

  A dust feeding / conveying belt 49 is pivoted in the front-rear direction below the processing cylinder 48. The dust feeding conveyor 49 is a screw type conveyor, and the processed material leaked through the holes (mesh) provided in the processing cylinder net 48 by the dust feeding conveyor 49 is forward of the machine body (that is, , In the direction opposite to the conveying direction of the dust feeding port processing cylinder 46, and is re-introduced to the rear of the handling chamber 41 through the dust discharging port 49 a provided at the front end of the dust feeding and conveying conveyor 49.

Next, the sorting device 50 will be described.
As shown in FIG. 3, the sorting device 50 includes a swing sorting device 51 that performs swing sorting, a wind sorting device 52 that performs wind sorting, and a first sorter disposed below the swing sorting device 51. 53 and a second basket 54 disposed below the swing sorting device 51 and behind the first basket 53 (downstream in the grain transporting direction).

  The swing sorting device 51 communicates with the handling chamber 41 via the receiving net 44 and is disposed below the handling cylinder 43 so as to receive the threshing that flows down from the threshing device 40. A feed pan 55, a chaff sheave mechanism 56 that is arranged to receive threshing flowing down from the threshing device 40 and threshing sent from the feed pan 55, and to swing and sort the grains from the threshing. A stroll back mechanism 57 disposed in series behind the chaff sheave mechanism 56.

  The feed pan 55 is configured to convey the threshing flowing down from the threshing device 40 toward the chaff sheave mechanism 56 toward the rear side of the vehicle while diffusing in the vehicle width direction. Specifically, the feed pan 55 is a plate body having an upper surface formed in a wave shape.

The chaff sheave mechanism 56 performs specific gravity selection on the cereal that flows down from the threshing device 40 and the cereal that is sent from the feed pan 55, and a part of the threshing is located on the lowermost side. 53 is made to flow down as the first grain.
Specifically, the chaff sheave mechanism 56 is a plurality of fins extending in the vehicle width direction, and has a plurality of fins arranged side by side in the vehicle front-rear direction with a space therebetween, and is subjected to specific gravity sorting. The grains fall through the gap to the first basket 53 disposed below.
The plurality of fins can be integrally swung around a pivot shaft along the vehicle width direction in a rearward inclined state where the lower end portion is located on the vehicle front side with respect to the upper end portion. The opening width of the interval can be adjusted by changing the inclination angle by a mechanism (not shown).

  The Strollac mechanism 57 performs specific gravity selection on the cereals sent from the chaff sheave mechanism 57, and among the cereals, the grain with a branch-branch having a specific gravity lighter than the grain, such as a grain cut, is small. The cereal is made to flow down to the second basket 54 located below as a second thing, and large unnecessary items such as waste are transported out of the machine.

  In the present embodiment, the swing sorting device 51 further includes a grain sheave mechanism 58 between the chaff sheave mechanism 56 and the first flange 53 in the vertical direction. The grain sheave mechanism 58 further finely selects the sort flowing down from the chaff sheave mechanism 56 or the sort conveyed through a feed pan 59 disposed below the chaff sheave mechanism 56 and in front of the grain sheave mechanism 58. For example, it is formed of a net-like body.

The wind sorting device 52 is configured to send the sorting wind to the swing sorting device 51, and the sorting wind can promote the grain sorting by the swing sorting device 51. Yes.
Specifically, the wind sorting device 52 has a tang fan 61 disposed in front of and below the chaff sheave mechanism 56. The rotary fan 61 is rotationally driven by a drive shaft along the vehicle width direction, and sends the sorting wind that passes from the front lower side to the rear upper side to the swing sorting device 51.

In the present embodiment, the wind sorting device 52 is located above the swing sorting device 51 and behind the handling chamber 41 (whole cereal conveyance) so as to suck the sorting wind from the tang fan 61 and discharge it outside the machine. A suction fan 62 is provided on the downstream side in the direction.
The suction fan 62 is rotationally driven by a rotation shaft along the vehicle width direction.

The first reed 53, which is the first collection mechanism, has a concave shape in a side view disposed below the swinging sorter 51 so that the first grain sorted by the sorter 50 can be collected. ing.
The first grain recovered in the first basket 53 is transported to the Glen tank 6 through the first transport device and stored. Specifically, the first transport device is disposed in the first recovery space along the vehicle width direction, and the first grain is directed to one side (right side) in the vehicle width direction of the first basket 53. The first conveyor 63 to be conveyed, the lower end portion is operatively connected to the downstream end portion of the first conveyor 63 in the conveying direction, and the upper end portion is connected to the grain tank 6 so as to be able to convey the first grain so as to convey the first grain. And have. In the present embodiment, the first conveyor 63 and the cereal conveyor 64 are both screw conveyors, and rotate the first conveyor 63 and the cereal conveyor 64 that are operatively connected to each other using the rotational power of the barrel 43. Driven.

The second basket 54, which is a second collection mechanism, is formed in a concave shape in a side view disposed below the swing sorting device 51 so that the second product sorted by the sorting device 50 can be collected. Yes.
In the present embodiment, the sorting device 50 includes a second processing cylinder 65 for rethreshing a part of the sorted product sorted by the swing sorting device 51 and the wind sorting device 52.
Then, the second product collected in the second basket 54 is supplied to the second processing cylinder 65 via the second reduction device, re-threshed, and then re-sorted. The second reduction device is disposed along the vehicle width direction, and a second conveyor 66 that conveys the second item to one side (right side) of the second basket 54 in the vehicle width direction, and the second conveyor 66, and a second reduction conveyor 67 that is operatively connected to the downstream end of the transfer direction 66 and connected to the processing chamber of the second processing cylinder 65.

  According to the above configuration, the second item collected in the second cage 54 is conveyed to the one side in the vehicle width direction by the second conveyor 66 of the second reduction device, and then downstream in the conveyance direction of the second conveyor 66. It is conveyed to the second processing cylinder 65 by the second reduction conveyor 67 of the second reduction device provided continuously on the side. In the second processing cylinder 65, when the second product is threshed, the lump-shaped unprocessed product is loosened to some extent, and the processed product is upstream of the handling chamber 41 in the grain conveying direction (front of the vehicle). ) Is again transported into the handling chamber 41 from a carry-in port (not shown) provided at.

  In the present embodiment, the wind sorting device 52 includes a second fan 68 that is a sub-feed fan disposed between the first conveyor 63 and the second conveyor 66. By sending the sorting air from the second fan 68 in addition to the Kara fan 61, the sorting performance by the wind sorting is lowered on the downstream side (rear part of the vehicle) of the wind sorting device 52 where the wind of the sorting wind by the Kara fan 61 is weakened. Can be prevented.

Then, the structure of the receiving network 44 of the said threshing apparatus 50 is demonstrated.
FIG. 5 shows a development view of the receiving network in the present embodiment. In FIG. 5, the positional relationship between the receiving net 44, the handling cylinder 43, and the dust feeding port processing cylinder 46 is also shown.
In the present embodiment, as shown in FIGS. 4 and 5, the receiving net 44 is viewed in the cylinder axis direction so as to cover a portion of the lower part of the cylinder 43 that is located on the front side of the dust feeding port 47. The first receiving net portion 71 having an arcuate shape and the lower part of the handling cylinder 43 cover the portion behind the first receiving net part 71 and upstream of the dust feed port 47 in the handling cylinder rotation direction. In this way, the second receiving net portion 72 is formed in an arc shape when viewed in the axis direction of the handling cylinder, and the second receiving net portion 72 connected to the first receiving net portion 71 is provided.

The first receiving net 71 is a plurality of vertical plate members 73 each along the circumferential direction of the barrel with the plate surface facing the front-rear direction, and is arranged in parallel in the rotational axis direction of the barrel 43. A plurality of vertical plate members 73, and a plurality of linear members each having a substantially circular shape in cross-section inserted through holes 73a formed in the plurality of vertical plate members 73 so that each of the vertical plate members 73 is along the rotational axis direction of the handling cylinder 43. 74, and a plurality of linear members 74 arranged in parallel in the circumferential direction of the handling drum 43, and the plurality of vertical plate members 73 and the plurality of linear members 74 are rectangular in plan view. The first opening 71a is formed. The plurality of linear members 74 are composed of piano wires, for example.
In FIG. 4, the hole 73 a and the linear member 74 formed in the vertical plate member 73 are exaggerated and enlarged so that they can be easily seen.
Moreover, the said 2nd receiving net part 72 forms the several 2nd opening 72a of planar view rectangular shape by pressing a flat plate member, such as a steel plate.
The second receiving net portion 72 and the first receiving net portion 71 are configured such that a flat plate member constituting the second receiving net portion 72 is provided with a pin, a bolt or the like (see FIG. It is connected by fixing with (not shown).

According to the above configuration, each of the receiving nets 44 is arranged in the circumferential direction of the handling cylinder 43 in a state where the plate surface faces in the front-rear direction in the first receiving net part 71 located on the front side of the dust feeding port 47. A plurality of vertical plate members 73 are arranged in parallel in the rotation axis direction of the handling cylinder 43, and a plurality of linear members 74 having a substantially circular shape in cross section are formed in the plurality of holes 73a formed in the vertical plate member 73. By being inserted through each of them, they are arranged in parallel in the circumferential direction of the handling cylinder 43 in a state along the rotational axis direction of the handling cylinder 43.
In the present embodiment, the plurality of vertical plate members 73 are provided with the plurality of holes 73a at equal intervals along the circumferential direction of the handling cylinder 43, and each of the plurality of vertical plate members 73 is At least one end portion (both end portions in FIG. 5) is fixed by the connecting base portion 76 in a state of being spaced apart from each other by a predetermined distance. The linear member 74 is inserted into the holes 73a of the plurality of vertical plate members 73 and then fixed. The fixing location is not particularly limited, and examples thereof include fixing the vertical plate member 73 on the foremost side of the vehicle and the vertical plate member 73 on the rearmost side of the vehicle and the linear member 74.

In this manner, the first receiving net portion 71 is formed with a plurality of first openings 71a having a rectangular shape in plan view when the intersecting vertical plate members 73 and linear members 74 intersect each other.
Further, the receiving net 44 is a second receiving net 72 that covers a portion of the lower side of the handling cylinder 43 that is behind the first receiving net 71 and upstream of the dust feeding port 47 in the handling cylinder rotation direction. , A plurality of second openings 72a having a planar view shape are formed by pressing.

Thus, in the 1st receiving net part 71 located in the front side from the dust sending port 47, the 1st opening 71a is formed by crossing the vertical plate member 73 and the linear member 74, and forming the 1st opening 71a. The ratio (opening ratio) of the opening area of the entire punching hole to the entire area of the receiving net 44 can be increased while reducing the opening area of the receiving net 44. Further, by forming the side of the first opening 71a orthogonal to the tooth 43a of the handle 43 with the linear member 74, the teeth 43a of the receiver 44 are compared with the receiver formed by pressing. Since the part which opposes is not flat, the bellflower removal effect by the tooth-handling 43a can be heightened.
Therefore, the threshing efficiency can be improved in the front portion where the threshing including the grains and swarf desorbed by the handling cylinder 43 is relatively large.
Further, in the second receiving net portion 72 behind the first receiving net portion 71, the opening ratio is made smaller than that of the first receiving net portion 71 by forming the second opening 72a by press working. The lump-like unprocessed material can be efficiently transferred from the handling chamber 41 to the processing chamber 45 through the dust feed port 47.

  In the present embodiment, the second opening 72a is configured to have an opening area larger than that of the first opening 71a.

  More specifically, the plurality of linear members 74 are juxtaposed at substantially equal intervals in the circumferential direction of the handling cylinder 43, and the plurality of vertical plate members 73 are located on the front side and in the rotational axis direction of the handling cylinder 43. A front vertical plate member group 711 arranged in parallel at a first interval L1, and a second that is located on the rear side of the front vertical plate member group 711 and that is wider than the first interval L1 in the rotation axis direction of the handling cylinder 43 A central vertical plate member group 712 arranged in parallel at a distance L2, and a third distance L3 that is located on the rear side of the central vertical plate member group 712 and that is wider than the second distance L2 in the rotation axis direction of the handling cylinder 43. The rear vertical plate member group 713 arranged in parallel is included.

Here, the first opening 71a defined by the front vertical plate member group 711 and the plurality of linear members 74 is referred to as a front first opening 71a1, and the central vertical plate member group 712 and the plurality of linear members 74 are included. A first opening 71a defined by the first vertical opening 71a2 is a central first opening 71a2, and a first opening 71a defined by the rear vertical plate member group 713 and the plurality of linear members 74 is a rear first opening 71a3.
The second opening 72a has a large opening area in a state where the length of the side along the rotation axis direction of the handling cylinder 43 is shorter than the first rear opening 71a3 of the first opening 71a. Yes.

In this case, the threshed grain leaks downward from the first opening 71a of the first receiving net 71 having a smaller opening area, and is larger than the threshed grain but not as large as the lump-shaped untreated product. A bag or the like is located behind the first receiving net 71 and leaks downward from the second opening 72a of the second receiving net 72 having a larger opening area than the first opening 71a.
Thereby, the grain and impurities such as waste can be roughly selected, and the second opening 72a can be prevented from being clogged with impurities such as waste.

Further, the length of the side of the first opening 71a in the first opening 71a along the circumferential direction of the handling cylinder 43 is substantially constant, while the length of the side of the first opening 71a along the rotation axis of the handling cylinder 43 is substantially constant. The lengths L1, L2, and L3 of the sides are gradually increased as going to the rear vertical plate member group (the length L1 of the side in the front vertical plate member group 711 <the length of the central vertical plate member group 712). The length L2 of the side <the length L3 of the side in the rear vertical plate member group 713). The length L4 of the side of the second opening 72a along the rotational axis direction of the handling cylinder 43 is the rear vertical plate member group having the longest side length of the first opening 71a in the rotational axis direction of the handling cylinder 43. 713 and the length of the side of the rear first opening 71a3 formed by the linear member 74 along the rotation axis direction of the handling cylinder 43 (that is, the third distance L3) is shorter than the second length. The opening area of the opening 72a is larger than the opening area of the rear first opening 71a3.
That is, the circumferential length of the handling cylinder 43 of the second opening 72a is larger than the circumferential length of the handling cylinder 43 of the first opening 71a.

  Therefore, in the first receiving net portion 71, the rear first opening 71a3 that is elongated in the direction along the rotation axis direction of the handling cylinder 43 is provided, so that waste or unprocessed material that does not leak from the first opening 71a is rearward. In the second receiving net part 72, by increasing the length of the side along the circumferential direction of the handling cylinder 43 as compared with the first receiving net part 71, The first opening 71 a prevents the clogging of the receiving net 44 by leaking the sawdust and the like that have not leaked, and the unprocessed lump in the lump on the downstream side in the circumferential direction of the handling cylinder 43. The movement toward 47 can be promoted.

In the present embodiment, as shown in FIG. 5, the receiving net 44 is displaced from the tooth 43 a of the treatment barrel 43 in the rotational axis direction of the treatment barrel 43 (in this embodiment, the treatment barrel 43. A partition member 75 along the circumferential direction of the handle cylinder so as to overlap with the rotation locus of the handle teeth 43a when viewed in the direction of the rotation axis of the handle cylinder 43. The partition member 75 is provided only in the second receiving net portion 72a.
In the present embodiment, the partition member 75 is fixed on a side along the circumferential direction of the handling cylinder 43 of the second receiving net portion 72 so that the partition member 75 does not block the second opening 72a. Has been.
The partition member 75 includes a first partition member 751 formed of a plate-like body, and a second partition member 752 formed of a round bar whose center of a cross-sectional circle is along the circumferential direction of the handling cylinder 43. The first partition members 751 and the second partition members 752 are alternately arranged.
Furthermore, either the first partition member 751 or the second partition member 752 is arranged on all sides along the circumferential direction of the handling cylinder 43 of the second receiving net portion 72.

  In addition, it is not restricted to the said embodiment, For example, you may use only the 1st partition member 751 or the 2nd partition member 752 as the partition member 75, and the 1st partition member 751 and the 2nd partition member 752 are alternated. It is not necessary to arrange. Further, the partition members 75 may not be arranged on all sides along the circumferential direction of the handling cylinder 43 of the second receiving net portion 72. For example, among the sides, the rotation axis direction of the handling cylinder 43 The partition members 75 may be arranged on the sides separated by a plurality along the line.

When such a partition member 75 is used, the threshing effect conveyed by the said feed chain apparatus 20 will rock | fluctuate up and down by passing on the said partition member 75, Therefore A threshing effect is accelerated | stimulated.
In addition, the partition member 75 provided in the second receiving net portion 72 of the receiving net 44 along the circumferential direction of the handling cylinder 43 and the rotational trajectory of the tooth 43a of the handling cylinder 43 are mutually over in the axis direction of the handling cylinder. In order to wrap, the lump-like unprocessed material staying in the second receiving net portion 72 is promoted to move toward the dust feed port 47 on the downstream side in the circumferential direction of the handling cylinder 43 by the rotation of the handling cylinder 43. At the same time, the unprocessed mass is unraveled by being sandwiched between the teeth 43a of the handle 43 and the partition member 75.
Accordingly, the lump-like unprocessed material can be quickly transferred to the processing chamber 45 through the dust feed port 47 without staying in the handling chamber 41 for a long time, and the lump-like unprocessed material sent to the processing chamber 45 is also provided. Since the object can be loosened in advance, the threshing efficiency by the handling cylinder 43 can be improved and the processing efficiency by the dust feeding port processing cylinder 46 can be improved.

  As mentioned above, although one embodiment concerning the present invention was described, the present invention is not limited to the above-mentioned embodiment, and various improvement, change, and correction are possible within the range which does not deviate from the meaning.

FIG. 1 is a left side view of a combine according to an embodiment of the present invention. FIG. 2 is a plan view of the combine in one embodiment according to the present invention. FIG. 3 is a schematic left side view of the threshing device and the swing sorting device in the combine of FIG. 1. FIG. 4 is a schematic front view of the threshing apparatus in the combine of FIG. 1. FIG. 5 is a development view of the receiving network in the present embodiment.

Explanation of symbols

40 Threshing device 41 Handling chamber 43 Handling drum 43a Teeth 44 Receiving net 45 Processing chamber 46 Dust feeding port processing drum 47 Dust feeding port 71 First receiving net part 711 Front vertical plate member group 712 Central vertical plate member group 713 Back vertical plate Member group 71a first opening 71a3 rear first opening 72 second receiving net 72a second opening 73 vertical plate member 73a hole 74 linear member 75 partition member L1 first interval L2 second interval L3 third interval

Claims (4)

A receiving net is arranged around the lower part of the handling cylinder, and a rear side of the handling chamber in which the handling cylinder is accommodated and a front side of the processing chamber in which the dust feeding process cylinder is accommodated via the dust feeding opening. A threshing device in communication,
The receiving net has a first receiving net portion that is formed in an arc shape when viewed in the axial direction of the cylinder so as to cover a portion of the lower part of the cylinder that is located on the front side of the dust feeding port, and below the cylinder A second receiving net portion that is formed in an arc shape when viewed from the cylinder axis direction so as to cover a portion on the rear side from the first receiving net part and on the upstream side in the cylinder rotation direction from the dust feeding port, A second receiving net part connected to the first receiving net part,
The first receiving net portion is a plurality of vertical plate members each along the circumferential direction of the cylinder with the plate surface facing the front-rear direction, and a plurality of vertical plate members arranged in parallel in the cylinder axis direction. A plurality of linear members each having a substantially circular shape in sectional view and inserted in holes formed in the plurality of vertical plate members so as to be along the axis direction of the cylinder, and are arranged in parallel in the circumferential direction of the cylinder. A plurality of linear members, and the plurality of vertical plate members and the plurality of linear members form a plurality of first openings having a rectangular shape in plan view,
The threshing apparatus, wherein the second receiving net part includes a flat plate member in which a plurality of second openings having a rectangular shape in a plan view are formed by pressing . The receiving net is a partition member along the circumferential direction of the barrel so that it overlaps the rotation locus of the teeth when viewed from the barrel axis direction at a position displaced from the teeth of the barrel relative to the barrel axis direction. With
The threshing apparatus according to claim 1, wherein the partition member is provided only in the second receiving net part. The threshing apparatus according to claim 1 or 2, wherein the second opening has a larger opening width along the circumferential direction of the barrel than the first opening. The plurality of linear members are juxtaposed at substantially equal intervals in the circumferential direction of the barrel.
The plurality of vertical plate members are positioned on the front side and arranged in parallel with a first interval in the cylinder axis direction, and on the rear side of the front vertical plate member group and the cylinder axis A central vertical plate member group juxtaposed in a direction at a second interval wider than the first interval, and a central vertical plate member group positioned on the rear side of the central vertical plate member group and wider than the second interval in the cylinder axis direction. A rear vertical plate member group arranged in parallel at an interval of 3,
The second opening has a shorter side length along the barrel axis direction than the rear first opening defined by the rear vertical plate member group and the plurality of linear members in the first opening. The threshing apparatus according to claim 3, wherein the opening area is large.

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