JP2006042753A - Grain conveyer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screw type grain conveyer which has a rachis-branch-removing function in a simple structure, while avoiding the enlargement of the structure. <P>SOLUTION: This grain conveyer is provided with a pair of conveyers 17, 18 formed by disposing rotary shafts 17a, 18a along a grain-conveying route and attaching screw blades 17b, 18b to the rotary shafts, respectively, so that the rotary shafts are rotated to convey grains with the screw blades. Therein, the rotary shafts 17a, 18a of the conveyers 17, 18 are disposed at mutually adjacent positions in parallel to each other. The spiral directions of the screw blades 17b, 18b are set in the mutually opposite directions. The rotation directions of the rotary shafts 17a, 18a are set in the mutually opposite directions to convey the grains in the same direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a screw-type grain conveying device.

  There exists what was installed in the grain collection | recovery part of a combine as this kind of grain conveying apparatus. The processed product collected in the combine harvester is designed to be composed of only single-sized cocoons, but the pods remain attached to the cocoons and are not completely single grains. There may be no branch infarct particles included in the processed product.

  On the other hand, like what was described in patent document 1, for example, the recovery which collects the processed material processed in the threshing part (B in Drawing 4 of patent document 1) and the sorting part (same C) with which the combine is equipped A grain recovery device (19 in FIGS. 1 and 2 of the same document) is provided in the part (same D), and a lower blade (21) as a launching blade and a fixed There is a structure provided with a receiving blade (27) and configured to reduce the conveyed second product to the sorting unit (C) while performing the branching process.

In such a configuration, the grain finally stored in the storage unit is obtained by performing an additional branch raft process on the processed product subjected to the threshing process and the sorting process in the process of conveying the processed object. Is promoted to improve the accuracy of the threshing and sorting process as a combine.
JP-A-7-143817 (FIGS. 1, 2 and 4)

In the combine, in addition to the lower blade as in Patent Document 1, a screw type grain conveying device is provided, and recently, the screw type grain conveying device is also considered to have a branch raft processing function. . However, it is actually difficult to add a lower blade like Patent Document 1 to the screw-type grain conveying device because it leads to an increase in the overall size.
Therefore, the present invention has an object to simplify the structure while avoiding an increase in the size of the structure when the screw-type grain conveying device is provided with a branch raft processing function.

[I]
(Constitution)
The first feature of the present invention resides in the following configuration in the grain transport device.
A rotary shaft is provided along the grain conveyance path, screw blades are attached to the rotary shaft, and the rotary shaft is rotationally driven to provide two sets of conveying devices configured to convey the grains by the screw blades, The rotating shafts of the conveying devices are arranged close to each other in a parallel state, the screwing directions of the screw blades are set in opposite directions, and the rotating directions of the rotating shafts are set in opposite directions, The grain is configured to be conveyed in the same direction.

(Function)
According to the first feature of the present invention, the screw blades are attached to the rotating shafts approaching in parallel so that the screwing directions are opposite to each other, so that the rotating directions of the respective rotating shafts are opposite to each other. When rotationally driven in the direction, the grains are conveyed in the same direction in the axial direction by screw blades rotating in the opposite direction.
The grain conveyed by the rotating screw blades obtains the conveying force in the axial direction of the rotating shaft by the screw surface and at the same time the conveying force in the rotating direction. A grain flow is formed. Therefore, the conveying direction of the grain conveyed by the screw blades of one conveying device in the rotational direction (rotation direction A) of the screw blades, and the rotating direction (rotation) of the screw blades by the screw blades of the other conveying device. A region in which the conveying direction of the grains conveyed in the direction B is opposed to each other on the inner side of the rotation axis is formed. In this region, the grains conveyed in the direction of rotation A and the grains conveyed in the direction of rotation B are pressed against each other and mixed together, so that the processed material conveyed by the conveying device The branch rachis processing of the branch rachi grains contained in is promoted.

(effect)
According to the first aspect of the present invention, the screw blades are attached to the rotating shafts approaching in parallel so that the screwing directions are opposite to each other, and the rotating directions of the respective rotating shafts are opposite to each other. By rotationally driving in this manner, not only the conveyance capacity increases, but also the branch infarct processing of the branch infarct particles contained in the processed material conveyed by the conveyance device is promoted, and the single particle accuracy is improved. In this way, a grain transport device capable of branching can be realized with a structure that is simple and suppresses complication of the device as much as possible.

[II]
(Constitution)
The second feature of the present invention resides in the following configuration in the first feature of the present invention.
Each rotating shaft is provided sideways, and each rotating shaft is arranged close to the horizontal direction.

(Function)
According to the second feature of the present invention, the “action” described in the preceding item [I] is provided in the same manner as the first feature of the present invention, and in addition to this, the following “action” is provided.
The grain conveyed by the rotating screw blades obtains the conveying force in the axial direction of the rotating shaft at the same time as the screw surface and also the conveying force in the rotating direction. On the other hand, since the downward force due to gravity is acting on the grain being conveyed by the conveying device, the force obtained by combining the rotational force and the downward force due to gravity is exerted on the grain. Works.

  Therefore, in a cross-sectional view orthogonal to the rotation axis, the synthetic force acting on the grain changes depending on the phase in the rotation direction, so the density of the grain is relatively low and the movement speed of the grain in the rotation direction is relatively low. A fast region (hereinafter referred to as region A) and a region where the density of the grain is relatively high and the movement speed of the grain in the rotational direction is relatively slow (hereinafter referred to as region B) are steady along the rotational direction. Distributed, and the density and moving speed of the grain will vary depending on the phase of the rotational direction of the screw blades.

  Since the distribution density and moving speed of the grain will differ depending on the phase in the rotational direction of the screw blades, if the forward rotating screw blade and the reverse rotating screw blade are arranged close to each other in the lateral direction, the density of the kernel will be reduced. High phase parts (when the second half parts of each rotational phase are close to each other in the horizontal direction) or phase parts with a high moving speed (when the first half parts of each rotational phase are close to each other in the horizontal direction) are close together, The effect of the branch rachis processing by the contact between the grains becomes remarkable, the branch rachis processing of the branch rachis contained in the processed product conveyed by the conveying device is further promoted, and the single granulation accuracy is further improved.

(effect)
According to the second feature of the present invention, the “effect of the invention” of the first feature of the present invention described above is provided in the same way as the first feature of the present invention. “Effect of the invention” is provided.
According to the second aspect of the present invention, when the rotation shafts are provided sideways and the rotation shafts are arranged close to each other in the horizontal direction, the branch infarct processing of branch infarct grains contained in the processed material conveyed by the conveying device is further accelerated. In addition, since the single grain accuracy is further improved, it is possible to realize a grain transport device that can perform more effective branch raft processing with a structure that is simple and suppresses the complexity of the device as much as possible.

[III]
(Constitution)
A third feature of the present invention resides in the following configuration in the first or second feature of the present invention.
A part of the screw blade is constituted by a plate body parallel to the rotation axis.

(Function)
According to the third feature of the present invention, the “action” described in the preceding item [I] [II] is provided in the same manner as the first or second feature of the present invention. In addition, the following “action” is provided. It has.
Since the grain conveyed by the rotating screw blade is conveyed in the direction of the rotation axis by the continuous inclined surface of the screw blade, if a part of the screw blade is constituted by a plate parallel to the rotation axis, the portion In, the conveying force in the rotation axis direction is suppressed, and the conveying force in the rotation direction increases. Therefore, the amount of movement in the rotation direction of the grains increases, the degree of mixing or contacting of the grains conveyed by the conveying devices arranged close to each other increases, and the branch raft processing is further promoted. .

(effect)
According to the third feature of the present invention, the “effect of the invention” of the first or second feature of the present invention described above is provided in the same manner as the first or second feature of the present invention. In addition, the following
The effect of invention is provided.
According to the third feature of the present invention, when a part of the screw blade is formed of a plate parallel to the rotation axis, the branch infarction treatment of the branch infarction particles contained in the processed material conveyed by the conveying device is further promoted. Therefore, it is possible to realize a grain transport device that can perform more effective branch rachis processing with a structure that is simple in structure and less complicated as much as possible.

[First Embodiment]
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a threshing / sorting device 1 mounted on a combine. The threshing / sorting device 1 is configured by arranging a threshing device A on the upper side, a sorting device B on the middle side, and a recovery device C on the lower side.

  In the threshing device A, a handling cylinder 3 for handling and handling the harvested cereal while being held and fed by the feed chain 2 is pivoted on the handling chamber 4 and the receiving net 5 for leaking the treated product. Is stretched below the barrel 3.

  The sorting device B includes a glen pan 6 that receives the processed material leaked from the receiving net 5, a chaff sheave 7 and a stroll rack 8 that are sequentially located behind the glen pan 6, and a glen sieve 9 that is located below the chaff sheave 7. Along with the left and right frame plates that are driven to swing back and forth, a tang 10 is provided below the front and rear gren pan 6.

  The recovery device C is provided with a first object recovery screw transport device 11 that recovers leakage from the Glen sheave 9 and laterally feeds it to the horizontal side below the Glen sheave 9, and the upper rear end of the Glen sheave 9; A second object collecting screw conveying device 12 for collecting the leakage from the chaff sheave 7 and the like and laterally feeding it to the one side is provided.

  A screw-type lifting device (not shown) that lifts the first item to a grain tank (not shown) arranged in parallel with the threshing sorting device 1 is linked to the transfer terminal portion of the first thing collecting screw transfer device 11. On the other hand, the starting end portion of a reducing screw transfer device 14 (see FIG. 2) for returning the second item to the handling chamber 4 is connected to the transfer end portion of the second item recovery screw transfer device 12, and the threshing device. The processed material from A is returned to the upper space of the handling chamber 4 of the threshing apparatus A or the Glen pan 6 of the sorting apparatus B. A cross flow fan 15 for dust removal is disposed above the Strollac 8.

  As shown in FIGS. 2 and 3, the second object collection screw transport device 12 winds the screw blades 17 b and 18 b around the two rotary shafts 17 a and 18 a that are arranged in parallel with the positions shifted in the front-rear direction. Obtained by forming two sets of conveying devices 17 and 18 that are screwed in opposite directions, and forming the bottom case 16 of the threshing sorter 1 in a groove shape below these conveying devices 17 and 18. It is comprised with the conveyance path bottom wall 16A.

  As shown in FIGS. 3A and 3B, the conveyance path bottom wall 16A is provided with openings 17c and 18c for cleaning or maintenance in the vicinity of the left and right central portions below the conveyance devices 17 and 18, respectively. During the work, it is closed by a pair of covers 19a and 19b (the state shown in FIG. 3 (a)). The covers 19a and 19b are configured to be openable and closable. When the operating lever 20 is swung downward, the covers 19a and 19b are simultaneously swung downward about the horizontal axes P1 and P2, respectively (the state shown in FIG. 3B). ). As a result, the openings 17c and 18c are exposed, and the operator can clean the transfer device 17 and the transfer device 18.

  Flat gears 21 and 22 having the same number of teeth are attached to the rotary shafts 17a and 18a at the upstream end portions of the transfer device 17 and the transfer device 18, respectively. Rotate to. A belt pulley 23 is attached to the end of the rotary shaft 17a, and power output from an engine (not shown) mounted on the combine is distributed and transmitted to the belt pulley 23, so that the rotary shafts 17a and 18 of the grain conveying devices 17 and 18 18a are rotationally driven at the same rotational speed in opposite directions.

  On the other hand, the screw blade 17b screwed on the rotary shaft 17a and the screw blade 18b screwed on the rotary shaft 18a are screwed in the opposite winding direction, so that the rotary shaft 17a and the rotary shaft 18a are When rotated in the opposite direction, the conveying direction of the grains conveyed by the conveying device 17 and the conveying device 18 is the same.

  Specifically, the screw blade 17b is configured to be right-handed, and the rotation shaft 17a is rotated counterclockwise as viewed from the left side of the threshing sorter 1 (in the direction of arrow a in FIG. 3A), and the screw blade 18b is wound left-handed. The rotating shaft 18a is rotated to the right in the left side view of the threshing sorter 1 (the direction of the arrow b in FIG. 3 (a)), and the grains are transferred to the paper surface in FIG. It is configured to be conveyed from the front to the back (in the direction of the arrow shown in FIG. 2).

  By comprising as mentioned above, the grain conveyed by the second thing collection | recovery screw conveying apparatus 12 can receive a branch raft process effect | action in the middle of a conveyance path | route. That is, the grains leaked from the sorting device B are rotated by the conveying devices 17 and 18 as indicated by the arrows in FIG. 2 when the conveying devices 17 and 18 constituting the second product collecting screw conveying device 12 are driven to rotate. It is conveyed in the direction.

  In this process, the grain receives a rotational conveyance force of the left rotation (direction of arrow a shown in FIG. 3A) around the rotation shaft 17a by the conveyance device 17, and the right rotation around the rotation shaft 18a by the conveyance device 18. Since the rotational conveying force (in the direction of the arrow b shown in FIG. 3 (a)) is received, in the region sandwiched between the rotating shaft 17a and the rotating shaft 18a, the grains in the lower part of each conveying device are conveyed to the conveying device 17. By drawing toward the center from both the side and the conveying device 18 side, the grains are pressed against each other and conveyed upward while being mixed. Therefore, the contact between the grains becomes active, and the action of the branch rachis processing by friction is promoted, so that the single grain accuracy as the threshing sorting apparatus 1 is improved.

  Also, when the grain is conveyed along the rotational direction of the screw blades, the grain in the second half of the rotational phase moves upward against the downward gravity, so the rotational direction in the other rotational phase parts The density is higher than that of the grain conveyed to the machine, and the moving speed in the vertical direction is low. In the configuration of the present embodiment, since the second half portions of the respective rotation phases of the transport devices 17 and 18 are close to each other in the lateral direction, the grains existing in the region sandwiched between the rotation shaft 17a and the rotation shaft 18a are: The density is high and the moving speed in the vertical direction is low. Therefore, in the region sandwiched between the rotating shaft 17a and the rotating shaft 18a, the degree to which the grains are pressed against each other becomes remarkable, the pressing force at the time of mixing increases, and the effect of the branch raft processing by friction is increased. It is further promoted, and the single grain accuracy as the threshing sorter 1 is further improved.

  As described above, the second object collection screw conveying device 12 is constituted by a pair of parallel conveying devices 17 and 18 arranged in parallel, and the winding direction and the rotational driving direction of the screw blades 17b and 18b of each conveying device are opposite to each other. By setting to, the grain conveyed by each conveying device will be mixed in a state where the pressing force is large, and the action of the branch raft processing by friction is promoted. In this way, it was possible to provide a grain transport device capable of branch branch treatment with a configuration that minimizes the size and complexity of the device.

[Second Embodiment]
In the configuration of the present embodiment, in the configuration of the above-mentioned [first embodiment], a part of the screw blades 17b and 18b of the transfer devices 17 and 18 is a plate body 25 provided in parallel to the rotation shafts 17a and 18a. Since it is the same as the configuration of the above-described [Embodiment 1] except for the configuration, the configuration of the transfer devices 17 and 18 and the operation and effect based on the configuration will be described below.

  As shown in FIG. 4, plate bodies 25 a and 25 b having predetermined lengths are attached to different portions of the rotation shaft 17 a of the transport device 17 in parallel to the rotation shaft. Both plate bodies 25a and 25b are attached in directions that are different from each other by 180 degrees in the orientation of the rotation direction with respect to the rotation shaft 17a. In addition, in order to make plate body 25a and 25b act with respect to as many grains as possible, it is desirable to arrange | position plate body 25a and 25b in the conveyance downstream of the rotating shaft 17a. Further, the plate body 25 is configured so that the height in the direction of the rotational radius is substantially the same as the rotational radius of the screw blades, and has a size that does not interfere with the adjacent transport device 18 and the transport path bottom wall 16A. Similarly, in the transport device 18, the plate bodies 26 a and 26 b are attached to different locations of the rotary shaft 18 a in directions that are different in mounting orientation by 180 degrees in the rotational direction phase.

  In the section W in which the plate bodies 25a, 25b, 26a, and 26b are provided instead of the screw blades 17a and 18a in the conveying devices 17 and 18, the conveying force in the rotation axis direction is suppressed, while the conveying force in the rotation direction is suppressed. Becomes larger. Therefore, the amount of movement in the rotation direction of the grains increases, and the degree to which the grains conveyed by the conveying devices 17 and 18 arranged close to each other are mixed or contacted with each other, and in the direction of the rotation axis. As a result, the time for the grain to pass through the section W is increased, so that the branch-branch treatment action acting on the grain is promoted.

  Accordingly, when a part of the screw blades 17b and 18b is constituted by the plate bodies 25a, 25b, 26a, and 26b parallel to the rotation shafts 17a and 18a, the branch infarct included in the processed material conveyed by the conveying devices 17 and 18 Is improved, and the granulation accuracy of the threshing sorter 1 is improved. Therefore, it is possible to provide a grain transport device capable of branching, with a configuration that minimizes the size and complexity of the device. did it.

[Another Embodiment of the Invention]
Hereinafter, other embodiments of the present invention will be listed.
(1) In any of the above-described embodiments, the winding direction of the screw blades and the rotation direction of the rotation shaft of the transfer devices 17 and 18 may be reversed. That is, the screw blade 17b is configured to be left-handed, the rotation shaft 17a is rotated to the right (in the direction of arrow a in FIG. 6) when viewed from the left side of the threshing sorter 1, and the screw blade 18b is configured to be right-handed. 18a is rotated counterclockwise in the left side view of the threshing sorter 1 (the direction of the arrow b in FIG. 6), and the grains are moved from the front to the back in FIG. 6 by the conveying devices 17 and 18 (the direction of the arrow shown in FIG. 2). F) It may be configured to be conveyed.

  In this case, since the first half portions of the respective rotational phases of the conveying devices 17 and 18 are close to each other in the lateral direction, the grains existing in the region sandwiched between the rotating shaft 17a and the rotating shaft 18a The moving speed is fast and the density is low. Therefore, in the region sandwiched between the rotating shaft 17a and the rotating shaft 18a, the impact force when the grains collide with each other increases, the action of the branch raft processing due to friction is further promoted, and the threshing sorter 1 is used. Single grain accuracy is further improved.

(2) In the above-described embodiments, the transport devices 17 and 18 are close to each other in the lateral direction, but the transport devices 17 and 18 may be close to each other so as to be stacked in the vertical direction.

(3) In the above-described embodiments, the second product recovery screw transport device 12 of the combine threshing and sorting device is constituted by the grain transport device of the present invention. Or a grain transport device that is not mounted on the combine may be configured similarly.

(4) The plate body in the above-mentioned [second embodiment] may be one in which the edge of the plate body is bent or processed into a slit shape, or the plate body is provided with holes.

Longitudinal side view showing structure of threshing sorter 1 Longitudinal plan view of the second object collection screw conveying device 12 Longitudinal side view of the second object collection screw conveying device 12 Longitudinal plan view of the second object collection screw conveying device 12 in the second embodiment Longitudinal side view of the second object collection screw conveying device 12 in the second embodiment Longitudinal side view of the second object collection screw conveying device 12 in another embodiment (1)

Explanation of symbols

12 Grain transport device 17, 18 Transport device 17a, 18a Rotating shaft 17b, 18b Screw blade 25a, 25b, 26a, 26b

Claims (3)

  2. A conveying device configured to convey a grain by means of the screw blades by providing a rotating shaft along the grain conveying path, attaching a screw blade to the rotating shaft, and rotating the rotating shaft. Each rotation shaft of each conveying device is arranged close to each other in parallel, the screwing directions of the screw blades are set in opposite directions, and the rotation directions of the rotation shafts are mutually A grain conveying device configured to be set in the opposite direction and to be conveyed in the same direction.   The grain conveying device according to claim 1, wherein the rotary shafts are provided sideways, and the rotary shafts are arranged close to each other in the horizontal direction.   The grain conveying device according to claim 1 or 2, wherein a part of the screw blade is configured by a plate body parallel to the rotation axis.

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