JP2021129526A - Thresher - Google Patents

Abstract

To provide a thresher that can adjust a feed rate of a thresher in accordance with a sorting state and a sorting loss of the thresher by devising a configuration of a threshing cylinder cover and is improved in condition adaptability for harvest.SOLUTION: A thresher includes a threshing cylinder 53 including a threshing tooth 52 in a threshing chamber 51 which is formed by a threshing cylinder cover 50 and axially installed so as to be freely rotatably driven. A flat-surface part 50f is installed in an upper part of the threshing cylinder cover 50 and a movable dust sending guide 50g of which angle is freely adjustable is installed on a side of the threshing chamber 51 of the flat-surface part 50f.SELECTED DRAWING: Figure 4

Description

The present invention relates to a threshing device.

Conventionally, for example, a threshing device for a general-purpose combine of a full culm input type has a configuration in which a handling cylinder is driven and rotated in a cylindrically formed handling cylinder cover. (See Patent Document 1.)

Japanese Unexamined Patent Publication No. 2016-187327

However, in the conventional configuration in which the handling cylinder is driven and rotatably supported in the handling cylinder cover formed in a cylindrical shape, when the dust feeding guide is provided on the inner surface of the handling cylinder cover, the inner surface of the handling cylinder cover has a cylindrical shape. , Only a fixed dust feed guide can be provided on the inner surface of the handling cylinder cover, and the feed of the threshing device cannot be adjusted according to the sorting condition of the threshing device and the sorting loss. there were.

An object of the present invention is to devise a structure of a handling cylinder cover, to adjust the feed of the threshing device according to the sorting condition of the threshing device and the sorting loss, and to improve the condition adaptability to the harvested product. To provide.

The invention according to claim 1 is a threshing device in which a handling cylinder 53 having a handling tooth 52 in a handling chamber 51 formed by the handling cylinder cover 50 is rotatably mounted on a shaft, and is flat on the upper portion of the handling cylinder cover 50. This is a threshing device provided with a portion 50f and a movable dust feeding guide 50g having an adjustable angle on the handling chamber 51 side of the flat portion 50f.

According to the invention of claim 1, since the flat surface portion 50f is provided on the upper portion of the handling cylinder cover 50, the angle-adjustable movable dust feeding guide 50g can be provided on the handling chamber 51 side of the flat surface portion 50f. Therefore, the angle of the movable dust feeding guide 50 g can be adjusted as appropriate.

Therefore, the feed of the threshing device 5 can be adjusted according to the sorting condition of the threshing device 5 and the sorting loss, and the condition adaptability to the harvested product can be improved.

According to the second aspect of the present invention, the handling body cover 50 is composed of a lower handling body cover 50b formed of a net body or the like on which grains or the like fall downward and an upper handling body cover 50e covering the upper part of the handling body 53. The first aspect of claim 1, wherein the gap L2 between the locus of the tip of the handle 52 and the upper handle cover 50e is larger than the gap L1 between the locus of the tip of the handle 52 and the lower handle cover 50b. It is a grain removal device.

According to the invention of claim 2, in addition to the action and effect of the invention of claim 1, the internal space above the handling chamber 51 is expanded as compared with the conventional cylindrical handling barrel cover, so that the threshed grains are harvested. When the flow rate of the 稈 is large, the load is reduced, the decrease in the number of revolutions of the prime mover (engine) (engine drop), and the abnormal noise of the threshing device 5 are reduced.

According to the third aspect of the present invention, a plurality of movable dust guides 50 g are arranged side by side in the direction of the handling cylinder shaft 55 of the handling cylinder 53 in a plan view, and one end side of each is pivotally supported and the other end side is a connecting member 50k. The threshing device according to claim 1 or 2, wherein a plurality of movable dust feeding guides 50g are simultaneously adjustable in angle, and a cover body 50r is provided below the connecting member 50k.

According to the invention of claim 3, in addition to the action and effect of the invention of claim 1 or 2, the connecting member 50k, which is a protrusion in the handling chamber 51, is covered with the cover body 50r, so that the cutting is performed. The grain culm does not get caught and flows smoothly with the movable dust transfer guide 50 g, and good threshing can be performed.

The invention according to claim 4 is the threshing apparatus according to claim 3, wherein the cover body 50r is provided with a notch 50r'corresponding to the adjustable range of motion of the movable dust guide 50g.

According to the invention of claim 4, in addition to the action and effect of the invention of claim 3, the cover body 50r is provided with a notch 50r'corresponding to the adjustable movable range of the movable dust feeding guide 50g. The connecting plate 50k, which is a protrusion in the handling chamber 51, is covered with the cover body 50r to the maximum, and the cut grain culm does not get caught and smoothly flows with the movable dust feeding guide 50g, so that good threshing can be performed.

The invention according to claim 5 is the threshing device according to any one of claims 1 to 4, wherein a guide mounting member 50t having a flat surface portion 50f is fixed to the upper portion of the upper handling body cover 50e.

According to the invention of claim 5, in addition to the action and effect of the invention of any one of claims 1 to 4, a flat surface portion 50f which is a separate member is provided on the upper portion of the upper handling body cover 50e. Since the guide mounting member 50t is fixed, it is easier to manufacture as compared with the case where the flat surface portion 50f is integrally molded with the upper handling body cover 50e.

It is the whole left side view of the combine which concerns on embodiment of this invention. It is the whole plan view of the combine. It is a side sectional view of the threshing apparatus in the combine. It is a front sectional view of the main part of the threshing device in the combine. It is a top view for explaining the operation of the main part. It is a front sectional view of another embodiment (1) of this invention. It is a front sectional view of another embodiment (2) of this invention. It is a front sectional view of another embodiment (3) of this invention. It is a front sectional view of another embodiment (4) of this invention. It is a front sectional view of another embodiment (4) of this invention. It is a front sectional view of another embodiment (4) of this invention. It is a front sectional view of another embodiment (5) of this invention.

An example applied to the all-culm input type general-purpose combine according to the embodiment of the present invention will be described with reference to the drawings.

(Overall composition of combine harvester)
As shown in FIGS. 1 and 2, the general-purpose combine harvests rice, wheat, and the like, and includes an airframe frame 1 as an airframe, a pair of left and right crawler-type airframes 2 that support the airframe, and a pair of left and right crawler type traveling devices 2. An elevator 3 supported so as to be swingable up and down on the front part of the machine frame 1, a harvesting part 4 connected to the front end of the elevator 3, a threshing device 5 arranged on the left side of the machine frame 1, and a threshing device 5 It is provided with a grain tank arranged on the right lateral side of the above, and an operation unit 6 arranged on the right side of the elevator 3 and the threshing device 5 and on the front side of the grain tank. The traveling device 2, the elevator 3, the cutting section 4, the threshing device 5, the grain transfer device of the grain tank, and the like are driven by a prime mover (engine) mounted on the machine frame 1.

The cutting section 4 is a hair clipper type that is arranged over a pair of left and right weeding rods 7, a platform 8, a rotary reel 9 for scraping the harvest, and the left and right weeding rods 7 at the front end of the platform 8. It includes a cutting device 10 and an auger 11 which is arranged on the platform 8 and rotates around an axis in the left-right direction.

A hydraulic cylinder is provided between the machine frame 1 and the elevator 3, and the elevator 3 is provided so as to swing up and down with respect to the threshing device 5 around the axis in the left-right direction. When the elevator 3 is swung up and down, the cutting unit 4 is in a working state in which the platform 8 is lowered near the ground and a non-working state in which the platform 8 is raised high from the ground.

The rotary reel 9 is rotatably supported by a reel arm 12 rotatably supported around the swing shaft core P with respect to the cutting portion 4, and is always downward to a rotating body 13 supported by the reel arm 12. It is supported to face the reel and has a plurality of tines 14 that squeeze the planted reel.

When the combine is moved forward while the cutting unit 4 is lowered, the planted grain culm is divided into a cutting target and a non-cutting target by the weeding rod 7, and the cutting target is driven by the rotation of the rotary reel 9. The planted culm is cut by the clipper-type cutting device 10 while being scraped into the platform 8. The harvested culm scraped into the platform 8 is laterally fed to the front of the elevator 3 by the auger 11 and further scraped into the elevator 3. The harvested culm is transported to the rear by the elevator 3, and the entire harvested culm from the root to the tip is put into the threshing device 5.

The threshing device 5 threshs the thrown harvested culms with a rotating handling cylinder 53. The threshed grains are sent to a grain tank, temporarily stored, and discharged from the grain tank at any time by the discharge auger 16.

(Ogre)
The auger 11 for left and right lateral feeding is provided with spiral left and right spiralers 17 and 17 on the right side portion and the left side portion of the front part of the elevator 3, and the cut grain culm is laterally fed to the front of the elevator 3 and the elevator is driven by the scraping rod 18. 3 Scratch into the front part.

(elevator)
The elevator 3 includes an elevator case body 30 having a rectangular cylinder-shaped front end opening and a rear end opening, and a conveyor 31 which is built in the elevator case body 30 and conveys a harvested culm to a rear threshing device 5. (See FIG. 3).

(Threshing device)
As shown in FIG. 3, the threshing device 5 has a handling cylinder 53 having teeth 52 in a handling chamber 51 formed by a handling cylinder cover 50 at the upper portion thereof, and is axially mounted in the front-rear direction of the machine body.

In the handling cylinder 53, the handling tooth support members 54 provided with a plurality of handling teeth 52 are arranged at predetermined intervals in the radial direction (radial direction) from the handling cylinder shaft 55, and the handling tooth support members 54 are arranged in the circumferential direction (peripheral direction). Arranged at a predetermined interval (in the direction of rotation), a polygonal drum portion 56 is provided inside the tooth handling support member 54, and the drum portion 56 and the tooth handling support member 54 are the tops (corners) of the drum portion 56. Is arranged so as to face between the tooth handling support members 54 in the circumferential direction of the handling body shaft 55.

The handling cylinder 53 is formed at the tip of the drum portion 56 into a conical tapered portion 57 having a large diameter at the rear side, and is provided with a spiral 58 at the rear for transporting the cut grain culm.

In the lower part of the handling chamber 51 formed by the handling body cover 50, a general wall insert 59a, a swing sorting shelf 59b, a transfer shelf 59c, a sheave 59d, a straw rack 59e, a first conveyor 59f, and a second conveyor 59g Is provided.

Therefore, when the harvesting machine is supplied from the elevator 3 to the threshing device 5, the threshing machine is threshed by the rotating handling cylinder 53, and the threshed threshing falls from the handling net onto the swing sorting shelf 59b and swing sorts. Sorting is performed by swinging the shelf 59b and blowing air from the wall insert 59a, and the grains that have fallen from the swing sorting shelf 59b are collected on the first conveyor 59f and sent to the Glen tank.

The handling body cover 50 is a lower handling body cover 50b formed of a net body in which grains and the like fixed to the machine frame 50a of the grain removing device 5 fall downward, and the lower handling body cover 50b in the left-right direction of the machine body. The inner side is rotatably pivotally supported 50c, and the outer side is locked to the locking device 50d in a closed state.

The handling body cover 50 including the lower handling body cover 50b and the upper handling body cover 50e has a side cross-sectional shape that is not circular but long in the vertical direction, that is, the lower handling body cover 50b and the handling teeth. The gap L2 between the upper handling body cover 50e and the rotation locus of the tip of the handling tooth 52 is larger than the gap L1 with the rotation locus of the tip of the 52 tip (see FIG. 4).

Therefore, compared to the conventional cylindrical handling cylinder cover, the internal space above the handling chamber 51 is expanded, so that when the flow rate of the threshing culm is large, the load is reduced and the rotation speed of the prime mover (engine) is reduced (engine). Drop) and abnormal noise (rumble noise) of the threshing device 5 are reduced.

Further, the upper surface of the upper handling body cover 50e is a flat surface portion 50f, and seven movable dust feeding guides 50g having adjustable angles are provided inside the flat surface portion 50f (inside the handling chamber 51).

As shown in FIG. 5, each movable dust guide 50g is provided so that the base portion of the pin 50h extending upward is welded and fixed to the upper surface thereof, and the upper surface is in contact with the flat surface portion 50f. The pin 50h is inserted into a hole 50i provided in the flat surface portion 50h from below, and the base end side of the rotation operation lever 50j is fixed to the upper end thereof. Further, the seven movable dust guides 50g are connected by a connecting plate 50k as a connecting member at the end opposite to the side on which the pin 50h is provided.

Then, a hole 50m is provided on the tip end side (operation grip portion 50l side) of the rotation operation lever 50j, and the hole 50m is aligned with any of the plurality of screw holes 50o of the fixing member 50n provided on the upper surface of the upper handling body cover 50e. A hexagon bolt 50q with an operation gripping rod 50p is inserted and screwed and fixed. Depending on which of the plurality of screw holes 50o and the hole 50m are aligned and fixed to the tip side (operation grip portion 50l side) of the rotation operation lever 50j, seven movable dust feeding guides 50g are attached to the handling cylinder 53. On the other hand, the angle can be adjusted to an appropriate position from the feeding direction of the harvested grain culm, which has a gentle inclination, to the direction of resistance to feeding, which has an inclination close to a right angle to the handling cylinder 53.

Therefore, the feed of the threshing device 5 can be adjusted according to the sorting condition of the threshing device 5 and the sorting loss, and the condition adaptability to the harvested product can be improved.

Further, a flat plate-shaped cover body 50r is provided below the connecting plate 50k (on the handling cylinder 53 side) connecting the seven movable dust feeding guides 50g.

Therefore, since the connecting plate 50k, which is a protrusion in the handling chamber 51, is covered with the cover body 50r, the cut grain culm does not get caught and smoothly flows with the movable dust feeding guide 50g, and good threshing can be performed.

Further, the cover body 50r is provided with a notch 50r'(recess) in the adjustable range of motion of the movable dust feeding guide 50g, and covers the cover body 50r so as to overlap the lower side of the movable dust feeding guide 50g. Therefore, the connecting plate 50k, which is a protrusion in the handling chamber 51, is covered with the cover body 50r to the maximum extent, and the cut grain culm does not get caught and smoothly flows with the movable dust feeding guide 50g, so that good threshing can be performed.

The cover body 50r is configured to be arranged up to the rear end portion of the upper handling cylinder cover 50e, and the threshing culm smoothly flows backward without stagnation in the space where there is no movable dust transmission guide 50g at the rear portion. And good threshing can be done.

(Another embodiment)

(1) As shown in FIG. 6, the cover body 50r may be omitted in the above embodiment.

(2) As shown in FIG. 7, the side cross-sectional shape of the upper handling body cover 50e may be made longer in the left-right direction than the circular shape so that the internal space above the handling chamber 51 becomes wider. Even with this shape, when the flow rate of the harvested culm is large, the load is reduced, the decrease in the number of revolutions of the prime mover (engine) (engine drop) and the abnormal noise of the threshing device 5 (rumble noise) are reduced. If the cover body 50r is provided as in the embodiments of FIGS. 4 and 5, the same effect can be obtained.

(3) As shown in FIG. 8, the side cross-sectional shape of the handling cylinder cover 50 may be made longer in the vertical direction than the circular shape so that the internal space above the handling chamber 51 becomes wider. Even with this shape, when the flow rate of the harvested culm is large, the load is reduced, the decrease in the number of revolutions of the prime mover (engine) (engine drop) and the abnormal noise of the threshing device 5 (rumble noise) are reduced. If the cover body 50r is provided as in the embodiments of FIGS. 4 and 5, the same effect can be obtained.

(4) FIGS. 9 to 11 show the front fixed dust feeding guide on the front side in the rotation direction of the handling cylinder 53 of the movable dust feeding guide 50g in the handling chamber 51 of the handling cylinder cover 50 according to the embodiment of FIGS. 6 to 8. 50s is provided, and a rear fixed dust feeding guide 50s'is provided on the rear side of the handling cylinder 53 rotation direction of the movable dust feeding guide 50g. When the front fixed dust feed guide 50s and the rear fixed dust feed guide 50s' are tilted in the feeding direction of the cut grain culm, which is a gentle tilt with respect to the handling cylinder 53, the movable dust feed guide 50g is set. It is at the same angle as. Therefore, the movable dust guide 50 g, the front fixed dust guide 50s, and the rear fixed dust guide 50s' lengthen the length of the dust guide, so that the effect of the feeding action of the harvested culm is improved and the load is further increased. Can be reduced and good harvesting work can be performed. In addition, only one of the front fixed dust feeding guide 50s and the rear fixed dust feeding guide 50s' may be provided. Further, the front fixed dust feeding guide 50s and the rear fixed dust feeding guide 50s'are provided with the same number (7) as the movable dust feeding guide 50g at the same phase position, or a predetermined number smaller than the movable dust feeding guide 50g is movable. It may be provided at the same phase position of the dust feeding guide 50g. If the cover body 50r is provided as in the embodiments of FIGS. 4 and 5, the same effect can be obtained.

(5) FIG. 12 shows a flat surface portion 50f for mounting the movable dust feeding guide 50g on the upper handling body cover 50e, which is a member different from the arc-shaped member on the side cross section of the upper handling body cover 50e. That is, a guide mounting member 50t having a flat surface portion 50f is fixed to the upper portion of the upper handling body cover 50e, and the movable dust feeding guide 50g is mounted on the guide mounting member 50t in the same configuration as in the above-described embodiment. ..

Therefore, since the guide mounting member 50t having the flat surface portion 50f, which is a separate member, is fixed to the upper portion of the upper handling body cover 50e, it is manufactured as compared with the case where the flat surface portion 50f is integrally molded with the upper handling body cover 50e. Is easy.

The present invention can be applied to a general-purpose combine harvester, a head-feeding combine harvester, and a threshing machine.

50 Handling body cover 50b Lower handling body cover 50e Upper handling body cover 50f Flat surface 50g Movable dust guide 50k Connecting member 50r Cover body 50r'Notch 50t Guide mounting member 51 Handling room 52 Handling teeth 53 Handling body 55 Handling body shaft L1 Gap L2 Gap

Claims (5)

In a threshing device in which a handling cylinder (53) having teeth (52) is rotatably mounted in a handling chamber (51) formed by the handling cylinder cover (50), the upper portion of the handling cylinder cover (50) is mounted. A threshing apparatus characterized in that a flat surface portion (50 f) is provided on the surface of the threshing device, and a movable dust feeding guide (50 g) whose angle can be adjusted is provided on the handling chamber (51) side of the flat surface portion (50 f). The lower handling body cover (50b) formed of a net body or the like on which grains or the like fall downward, and the upper handling body cover (50e) covering the upper part of the handling body (53). It is composed of The grain removal device according to claim 1, wherein the gap (L2) between the two and the grain is larger. A plurality of the movable dust feeding guides (50 g) are arranged side by side in the direction of the handling cylinder axis (55) of the handling cylinder (53) in a plan view, and one end side of each is pivotally supported and the other end side is a connecting member (50k). ), A plurality of the movable dust feeding guides (50 g) are simultaneously adjustable in angle, and a cover body (50 r) is provided below the connecting member (50 k). The threshing device according to claim 1 or 2. The threshing device according to claim 3, wherein the cover body (50r) is provided with a notch (50r') corresponding to the adjustable range of motion of the movable dust guide (50 g). The threshing apparatus according to any one of claims 1 to 4, wherein a guide mounting member (50t) having the flat surface portion (50f) is fixed to the upper portion of the upper handling body cover (50e). ..

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