JP2004016205A - Threshing part of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce unthreshed straw or prevent clogging in the latter half of a threshing concave net installed around below a threshing cylinder. <P>SOLUTION: In a threshing part 12, a threshing cylinder 21 having threshing teeth 21a around the peripheral surface is horizontally installed in the longitudinal direction and the threshing concave net 20 is arranged around below the threshing cylinder 21. Several partitions 48 are arranged on the threshing concave net 20 locating below the latter half in the rotating direction of the threshing cylinder 21. The partitions 48 are constituted of tabular materials and installed to correspond one partition to the several threshing teeth 21a. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a configuration of a receiving network of a threshing unit of a combine.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a threshing unit of a combine, a lower part of a handling cylinder is covered with a receiving net to leak grains, straw chips, and the like. In the receiving net, a plurality of partitions composed of rods having a circular shape in cross section are protruded in the vicinity of the rear half of the handling cylinder to enhance the handling effect of the handling teeth provided on the handling cylinder and to leave unhandled portions. Was reduced. Further, the receiving network can be divided into two parts, so that the receiving network can be easily attached and detached.
[0003]
[Problems to be solved by the invention]
In the threshing part of the conventional combine as described above, the latter half of the receiving net on the feed chain side of the receiving net divided into two parts is provided with one partition for the passing part of the single tooth in side view. Had been provided. That is, in the latter half of the handling cylinder provided with a plurality of partitions, the passages of the respective grain stalks are blocked and narrowed by the partitions and the handling teeth. In the latter half, it was stagnant, and it was sometimes broken off. In particular, when threshing a wet material or the like, the leakage rate of the receiving net deteriorates in the latter half of the handling cylinder, and accordingly, the stagnation rate of the grain stalk may rise and cause clogging.
From the above, it is necessary to reduce the unhandled grain culm in the latter half of the drum and to improve the configuration of the partition that causes clogging of the receiving net.
[0004]
In addition, if the conventional receiving net is divided into left and right, the back net and the front net cannot be fixed unless they are simultaneously attached to the lower part of the handlebar. Had to be fitted simultaneously while pressing the net on the near side while attaching the net on the back side, and the workability was poor.
For this reason, a means is provided for enabling the work of attaching and detaching the receiving net to be performed safely and easily.
[0005]
[Means for Solving the Problems]
The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
[0006]
That is, in claim 1, in a threshing unit of a combine in which a handling cylinder provided with a toothing on an outer peripheral surface is traversed in a front-rear direction in a handling chamber of a threshing unit, and a receiving net is arranged around a lower part of the handling cylinder. A plurality of partitions are arranged in the rotation direction of the handling cylinder on a receiving net located at the lower part of the latter half of the handling cylinder, the partitions are formed of plate-like members, and the partitions are divided into a plurality of teeth at a ratio of one. It is provided.
[0007]
In claim 2, in the threshing section of the combine threshing section, in which the handling cylinder provided with teeth on the outer peripheral surface is traversed in the front-rear direction in the handling chamber of the threshing section, and a receiving net is arranged below the handling cylinder. A plurality of partitions are arranged in the rotating direction of the handling cylinder on the receiving net located at the lower part of the latter half of the handling cylinder, and the size of the hole of the receiving net on which the partitions are arranged is adjusted to the size of the hole of the receiving net located in the other part. It is configured to be larger than the size.
[0008]
According to a third aspect of the present invention, in the receiving net provided with the partition, a hole of the receiving net is arranged below a rotation locus of the tooth handling.
[0009]
In claim 4, a handling cylinder provided with teeth on the outer peripheral surface is laid in the handling chamber of the threshing unit in the front-rear direction, and a receiving net is arranged around a lower part of the handling cylinder. In the combine divided into two parts on the left and right sides of the side and the front side, a fixing means is provided on the back side receiving net, and the mating surface of the back side receiving net and the front side receiving net, the tip of the grain stalk is It is arranged outside the passing area through which it passes.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the invention will be described.
1 is an overall side view of a combine having a threshing unit according to the present invention, FIG. 2 is a side view thereof, FIG. 3 is a side sectional view of the threshing unit, FIG. 4 is a front view of a handling room, and FIG. , FIG. 6 is a schematic diagram showing the configuration of a partition provided on the receiving net of the present invention, FIG. 7 is a schematic diagram showing the configuration of a partition provided on a conventional receiving net, and FIG. FIG. 9 is an enlarged plan view showing the configuration of the protruding portion of the front net, FIG. 9 is a diagram showing the configuration of slip prevention means provided on the side of the rear net, and FIG. 10 is a plan view showing a second embodiment of the receiving net.
[0011]
First, the overall configuration of a combine according to the present invention will be described with reference to FIGS.
A body frame 2 is mounted on the crawler-type traveling device 1, and a raising / cutting unit 3 is provided at the front end of the body frame 2 so as to be able to move up and down. The raising and cutting section 3 protrudes the weeding plate 4 at the front end to divide the culm, and raises a case 5 at the rear thereof to raise the cereal by rotating a tine 6 protruding from the raising case 5. The culm is raised, and the root of the plant is cut off by the cutting blade 7 arranged at the rear of the weeding board 4.
[0012]
The cut culm is conveyed to the rear by an upper conveying device, a lower conveying device, and a vertical conveying device 8, and the stock is inherited from the upper end of the vertical conveying device 8 by a feed chain 9, and the grain is thrown into a threshing unit 12. The culm is transported. A straw chain 18 is provided at the rear end of the feed chain 9, and a straw processing unit 19 including a straw cutter device, a diffusion conveyor, and the like is formed below the rear of the straw chain 18 to remove the straw. After being cut into straw pieces, they are uniformly released into the field while spreading.
[0013]
A grain tank 13 for storing refined granules after sorting is arranged on the side of the threshing unit 12, and an operation cab 14 is arranged in front of the grain tank 13, while a grain tank 13 is arranged in the rear of the grain tank 13. A vertical auger 15a of the discharge auger 15 is erected, and the Glen tank 13 is rotatable sideways around the vertical auger 15a, thereby facilitating maintenance of a drive system and a hydraulic system disposed inside the machine. I have.
A discharge conveyor 16 is disposed at the bottom of the Glen tank 13 in the front-rear direction, and power is transmitted from the discharge conveyor 16 to the discharge auger 15, and from the tip of the discharge auger 15 to a truck or the like in the Glen tank 13. The grain can be discharged. Further, below the threshing unit 12, a sorting unit 17 is disposed, and sorts kernels and grains from the threshing unit 12 (hereinafter, referred to as “processed material”) and sends the grain to the Glen tank 13. It is transported.
[0014]
Here, the threshing unit 12 and the sorting unit 17 will be described with reference to FIG.
As shown in FIG. 3, a handling cylinder 21 is provided in a handling room 28 formed in the threshing unit 12 so as to extend in the front-rear direction of the machine body. Planting is performed to remove particles, and a receiving net 20 is provided around the lower part of the handling cylinder 21 so that only the processed material falls.
At the rear of the handling cylinder 21, the dust outlet processing cylinder 22 is laid horizontally in the front-rear direction on the Glen tank 13 side in parallel with the handling cylinder 21, and the rear of the handling cylinder 21 is connected to the dust outlet 23. An unprocessed material such as spike sticking particles that could not be processed by the handling cylinder 21 is sent to the dust outlet processing cylinder 22. A processing drum net 24 is provided around the lower part of the dust sending port processing drum 22, and only the processing object falls from the processing drum net 24.
[0015]
In the sorting unit 17, specific gravity sorting by the rocking sorting device 27 and wind sorting by Karino 26 are performed, and the processed material falling from the threshing unit 12 is separated into the first thing, the second thing, straw waste and the like. The swing sorting device 27 is housed in the machine frame 35, the front portion of the swing sorting device 27 is positioned below the front end of the handling cylinder 21, and the rear portion of the swing sorting device 27 is located at the rear end of the dust port processing cylinder 22. It extends to below the part. A swing shaft is provided at the lower front part of the swing sorting device 27, and a swing drive mechanism 34 is provided at the rear part, and the swing main body 49 is configured to swing by the swing drive mechanism 34. .
[0016]
In the front part of the rocking sorter 27, a upstream grain board 30 is formed, and in the rear lower part of the upstream grain board 30, a downstream grain board 31 is formed. The plate is formed into a wavy shape so that the grains can be easily transported backward. In addition, a mesh-shaped sieve 32 as a second sorting unit is continuously provided at the rear part of the downstream grain plate 31, and a first sorting unit is provided above the grain sieve 32 and the downstream grain plate 31. A chaff sheave 33 is provided.
[0017]
In addition, the first conveyor 36 and the second conveyor 37 are provided horizontally in the left and right direction at the front and rear intermediate positions below the swinging sorting device 27, and the grain conveyor is connected to the right side of the first conveyor 36 among them. The first thing leaked onto the flow tray 39 of the first conveyor 36 through the rocking sorting device 27 is transferred from the first conveyor 36 to the Glen tank 13 through the fry conveyor 38. It is to be transported. Further, a second reduction conveyor 40 is connected to the right end of the second conveyor 37, and a front end of the second reduction conveyor 40 is connected to the second processing apparatus 10, and the second processing apparatus 10 The second product from which the branch vein is removed by the branch vein processing cylinder is re-introduced to the sorting start portion of the swinging sorting device 27.
[0018]
And, under the rear part of the upstream grain plate 30, a karamino 26 is arranged to send a sorting wind to the grain sieve 32 and the chaff sieve 33, and a sub-pressure feeding fan is also provided between the first conveyor 36 and the second conveyor 37. A second fan 46 is provided to blow the sorting wind, so that the sorting performance does not decrease even in the rear part of the sorting unit 17 where the wind force of the sorting wind by Karino 26 is weakened.
[0019]
Further, above the rear end portion of the swinging sorting device 27, a suction fan 25 is provided horizontally across the entire width, and the suction fan 25 rides on the flow of the sorting wind supplied from the Karino 26 and the second fan 46. The collected dust is sucked and discharged outside the machine.
[0020]
The above is the overall configuration of the combine according to the present invention. Hereinafter, the configuration of the receiving network 20 of the threshing unit 12 will be described in detail with reference to FIGS.
As shown in FIG. 4, a handling cylinder 21 having a circular shape in a front view of the machine body is laid in the front and rear direction in a handling room 28 of the threshing unit 12, and a semicircular receiving net 20 is formed so as to cover a lower part of the handling cylinder 21. Are detachably provided. The receiving net 20 is divided into two parts, a back net 50 on the Glen tank 13 side (the right side in the traveling direction) and a front net 51 on the side of the feed chain 9 (the left side in the traveling direction). In a line 47 (FIG. 5), a connecting portion 54 between the back net 50 and the front net 51 is arranged. In this connecting portion 54, pins 42, 42, 42 are tangentially protruded from one of the mesh frames 50a, 51a at a contact portion between the back net 50 and the front net 51, and the pins 42 of the other mesh frame are An insertion hole is formed at the position, and when the front net 51 is pushed in, the pin 42 is fitted into the insertion hole and connected. Note that the connection configuration is not limited, and may be a configuration in which unevenness is fitted. Further, pins 42a, 42a, 42a are protruded from a mesh frame 50b on the Glen tank side of the back net 50, and the pins 42a, 42a, 42a are fitted to stays 43 serving as fixing members provided on the machine side. By the combination, the receiving net 20 is fixed to the lower part of the handling cylinder 21.
As described above, since the receiving net 20 is divided into two parts, the surrounding angle of the receiving net 20 covering the lower part of the handling cylinder 21 can be set to 180 degrees or more, which is wider than the case where the receiving net 20 is not divided. The lower part of the handling cylinder 21 can be covered in the range, and the leakage area can be increased to improve the sorting performance.
[0021]
As shown in FIG. 5, the receiving net 20 is formed in a substantially L-shape in plan view by a front net 51 and a back net 50, and the front net 51 is configured to be long in the front-rear direction and slightly protrude. The receiving net 20 is constructed by fixing a thin metal plate 45 on a net frame 44, and a rectangular hole 45a is formed in the plate 45 almost uniformly over the entire surface to form a mesh. Have been. Then, through the hole 45a, the paddy rice, straw chips, and the like that have been handled on the receiving net 20 by the handling teeth 21a are leaked. In this embodiment, the shape of the hole 45a is rectangular, but it may be round or polygonal.
[0022]
On the upper surface of the protruding portion 51b of the L-shaped receiving net 20, a plurality of partitions 48 formed of a metal plate or the like and having a predetermined height are provided in a convex manner in parallel with the rotation direction of the handling drum 21. Reference numeral 48 is provided between the teeth 21a, 21a implanted on the outer periphery of the handling cylinder 21 (FIG. 6). The protruding portion 51b is a rear half of the grain culm conveying path 9a by the feed chain 9, and is located at a lower part of the rear half of the handling cylinder 21.
At the projecting portion 51b having the plurality of partitions 48 protruding therefrom, the grain stalks conveyed by the feed chain 9 are lifted upward by the partitions 48 and pressed down by the teeth 21a. Therefore, the teeth 21a can be reliably brought into contact with the cereal stem, the gripping action of the teeth 21a, 21a... Can be enhanced, and the unhandled teeth can be reduced. .
[0023]
The conventional partition 148 is formed of a rod having a circular shape in cross section as shown in FIG. 7 and enhances the gripping action of the gripping teeth 21a as described above. When the wrap margin R2 between the teeth 21a and the partition 148 is increased, the gap width W2 between the handling teeth 21a and 21a and the partition 148 in the front-rear direction is reduced, and there is a tendency that the number of loosened and damaged grains is increased.
In the combine of the present invention, since the partition is formed of a plate as shown in FIG. 6, even if the wrap margin R1 is increased, the gap width W2 does not change and can be made larger than before. And the loss rate can be reduced.
[0024]
Further, since the partition 148 provided on the conventional receiving net has one partition 148, 148,... At the projecting portion 51b for each passing gap of the handling teeth 21a, 21a,. In the case of threshing cereals having poor permeability and high resistance, the mesh of the receiving net 20 may be clogged.
[0025]
In the receiving net 20 of the present invention, the partition 48 is provided at one ratio for a plurality of the teeth 21a.
That is, in the present embodiment, as shown in FIG. 6, one partition 48 is provided for every two gaps between the teeth 21a. That is, the distance L1 is twice as long as the distance L2 between the conventional partitions 148.
[0026]
Further, as shown in FIG. 8, the sizes of the holes 45b, 45b... Provided in the portion where the partitions 148, 148. The opening area is made larger than the size of the perforations 45a. The hole 45b is drilled directly below the passing line of the tooth 21a, so that the grain removed by the tooth 21a can be immediately leaked. That is, in the receiving net at the position where the partition 48 is provided, the receiving net 20 is disposed such that the center of the hole 45a opened in the receiving net 20 is located below the rotation trajectory of the handling teeth 21a. As described above, in the protruding portion 51b where the partition 48 protrudes, the opening area of the hole 45b is increased, and the hole 45b is pierced directly below the passing line of the tooth 21a. When threshing, it is easy to leak and clogging can be prevented.
[0027]
Further, the receiving net 20 can be detached by opening the feed chain 9 and pulling out or inserting it in an arc shape along a rail provided on the frame 55 on the side of the machine body from the side, and the back net 50 has a stopper. Is provided.
As shown in FIGS. 4 and 5, stoppers are provided on the front sides of the front and rear sides of the mesh frame 44 of the back net 50. That is, as shown in FIG. 9, the stopper spring 29 is fastened and fixed to the mesh frame 44 with the screw 41 so that the stopper spring 29 can be locked to the frame 50 on the machine body side, and when the front net 51 is pulled out for maintenance or the like. The back net 50 is prevented from sliding down.
Conventionally, the back net 50 and the front net 51 cannot be fixed unless they are simultaneously attached to the lower part of the handling drum 20. When the front net 51 is pulled out and removed, the back net 50 slides down, so that the back net 50 may be pinched. was there. Conversely, in order to attach the back net 50, it is necessary to simultaneously fit the front net 51, resulting in poor workability.
[0028]
In the present invention, the back net 50 can be fixed to the body side by using a flexible member such as a spring as the fixing means.
That is, the stopper spring 29 is formed by bending one end of a thin plate-like member into a mountain shape. The stopper spring 29 is fixed to the inner surface on the front side on both the front and rear sides of the mesh frame 44 of the back net 50 by projecting the apex of the mountain shape in the front and rear and outward directions by screws 41. On the other hand, a locking hole 55 a is also opened on the side surface of the frame 55 at the position where the back net 50 is set, in accordance with the position of the stopper spring 29.
When the back net 50 is attached to the lower part of the handling cylinder 20, the stopper spring 29 bends inward as shown in FIG. 9A, and the apex of the chevron 29b slides along the machine frame 55. Then, when reaching the locking hole 55a formed in the frame 55, the chevron 29b is fitted into the locking hole 55a and fixed to the frame 55.
Further, when pulling out the back net 55, the handle 29c formed at the end of the chevron 29b of the stopper spring 29 is simply pulled up inward, so that the chevron 29b is pulled out from the locking hole 55a and the fixing is easily released. can do.
[0029]
The fixing means is provided on the back net 50 of the receiving net 20 divided as described above, and the stopper spring 29 serving as the fixing means is locked in the locking hole 55a only by pushing the back net 50, and the front net 51 is provided. When the wire is pulled out, there is no fear that the back net 50 slides down, and the work of attaching and detaching the receiving net 20 can be easily performed. Since the fixing means only needs to be stopped when the front net 51 is attached or detached, it can be arranged on only one of the front and rear sides. Further, the handle 29c may be connected to a wire or the like so that the release operation can be performed on the feed chain side. Further, the configuration of the fixing means is not limited, and a configuration in which a pin is inserted and removed may be used.
[0030]
Next, a second embodiment of the receiving network will be described.
As shown in FIG. 10, the mating surface of the inner net 150 and the front net 151 of the receiving net 20 divided into two parts is configured so as to be located outside the passage area 9 a of the tip of the grain stalk conveyed by the feed chain 9. I have. In other words, the connecting portion 154, which is the mating surface between the back net 150 and the front net 151, is disposed on the back side (right side of the machine body) from the passage area 9a of the ear of the grain culm, and is arranged in parallel with the machine body front-back direction.
[0031]
With the above configuration, the mating surface between the back net 150 and the front net 151 moves to the back side from the front-rear line 47 at the start end of the dust outlet 23, and the mating surface is conveyed by the feed chain 9. The tip is located outside the passage area 9a of the tip to be drilled, and the tip does not pass through the mating surface on which the hole cannot be drilled, so that the unhandled portion can be reduced and the leakage can be promoted.
[0032]
【The invention's effect】
The present invention is configured as described above, and has the following effects.
[0033]
That is, as shown in claim 1, a threshing section of a combine in which a handling cylinder provided with toothing on the outer peripheral surface is traversed in the handling chamber of the threshing section in the front-rear direction, and a receiving net is arranged around a lower part of the handling cylinder. A plurality of partitions are arranged in the rotation direction of the handling cylinder on a receiving net located at a lower portion of the latter half of the handling cylinder, and the partitions are formed of plate-like members; Because the partition is plate-shaped and narrow, the gap between the tooth and the partition in the front-rear direction does not become small even if the wrap margin between the partition and the tooth is made large, and the shedding rate is reduced. And no worries about clogging.
[0034]
As shown in claim 2, in the threshing section of the threshing section, in a threshing section of a combine, in which a handling cylinder provided with toothing on the outer peripheral surface is traversed in the front-rear direction, and a receiving net is arranged around a lower part of the handling cylinder, A plurality of partitions are arranged in the rotation direction of the handling cylinder on the receiving net located at the lower part of the latter half of the handling cylinder, and the size of the hole of the receiving net on which the partitions are arranged is changed to the size of the hole of the receiving net located in another part. Since it is configured to be larger than the size of thresh, the grain after threshing becomes easy to leak and threshing performance can be improved. Also, clogging can be prevented. In addition, threshing performance can be improved.
[0035]
As shown in claim 3, in the receiving net provided with the partition, the holes of the receiving net are arranged below the rotation trajectory of the tooth handling, so that kernels and the like after threshing can easily leak and improve threshing performance. it can.
[0036]
As shown in claim 4, in the handling room of the threshing unit, a handling cylinder provided with toothing on the outer peripheral surface is traversed in the front-rear direction, and a receiving net is provided around the lower part of the handling cylinder. In the combine which is divided into two parts on the left and right sides on the back side and the front side, fixing means are provided on the back side receiving net, and the mating surface between the back side receiving net and the front side receiving net is attached to the tip of the grain stalk. Is placed outside the passage area through which the receiving net passes, so that when the receiving net is pulled out by the fixing means, even if the front receiving net is pulled out, the receiving net on the back side does not slide down and the work of attaching and detaching the receiving net Can be easily performed. In addition, the tip does not pass through the mating surface on which the holes are not formed, so that the unhandled portion can be reduced and the filtration can be promoted.
[Brief description of the drawings]
FIG. 1 is an overall side view of a combine provided with a threshing unit according to the present invention.
FIG. 2 is a side view of the same.
FIG. 3 is a side sectional view of the threshing unit.
FIG. 4 is a front view of a handling room.
FIG. 5 is a plan view of a receiving network.
FIG. 6 is a schematic diagram showing a configuration of a partition provided in the receiving network of the present invention.
FIG. 7 is a schematic diagram showing a configuration of a partition provided in a conventional receiving network.
FIG. 8 is an enlarged plan view showing a configuration of a protruding portion of a front net on which a partition is provided in a protruding manner.
FIG. 9 is a diagram showing a configuration of slip prevention means provided on the side of the back net.
FIG. 10 is a plan view showing a second embodiment of the receiving network.
[Explanation of symbols]
12 Threshing unit 20 Receiving net 21 Handling cylinder 21a Handling teeth 28 Handling room 45 Plate body 45a Drilling hole 48 Partition

Claims (4)

In the threshing section, in the threshing section of the combine threshing section in which a handling cylinder provided with toothing on the outer peripheral surface is traversed in the front-rear direction in the handling chamber of the threshing section, and a receiving net is arranged around the lower part of the handling cylinder, A plurality of partitions are arranged in the rotation direction of the handling cylinder on a receiving net located at a position, and the partitions are formed of plate-like members, and the partitions are provided at a ratio of one to a plurality of handling teeth. Threshing department. In the threshing section, in the threshing section of the combine threshing section in which a handling cylinder provided with toothing on the outer peripheral surface is traversed in the front-rear direction in the handling chamber of the threshing section, and a receiving net is arranged around the lower part of the handling cylinder, A plurality of partitions are arranged on the receiving net positioned in the direction of rotation of the handling cylinder, and the size of the holes of the receiving net on which the partitions are arranged is configured to be larger than the size of the holes of the receiving net located in other parts. The threshing unit of the combine, characterized in that: The threshing part of the combine according to claim 1 or 2, wherein in the receiving net provided with the partition, a hole of the receiving net is arranged below a rotation locus of the tooth handling. In the handling room of the threshing unit, a handling cylinder provided with teeth on the outer peripheral surface is laid horizontally in the front-rear direction, and a receiving net is arranged around the lower part of the handling cylinder, and the receiving net is placed on the left and right sides of the back side and the near side. In the combine which is divided into two, a fixing means is provided on the back side receiving net, and the mating surface between the back side receiving net and the front side receiving net is arranged outside the passage area through which the tip of the grain stalk passes. The threshing section of the combine, characterized by the following.

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