JP2017023087A - Self-threshing type combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve threshing efficiency as a whole by preventing sticking of grains while maintaining threshing performance.SOLUTION: A self-threshing type combine includes: a threshing device including a threshing cylinder 52 arranged in a state capable of being driven to rotate around a threshing shaft core P in a threshing chamber and plural threshing teeth 57 arranged on an outer peripheral part of the threshing cylinder 52 in a state protruding toward an axial outer side of the threshing cylinder 52; and a holding conveyance mechanism 55 holding and conveying a root Wa side of a reaped grain culm W while positioning an ear tip side Wb of the reaped grain culm W in the threshing chamber. A wide width part H having a larger width dimension along the threshing shaft core P direction than a base end part of the threshing teeth 57 is arranged in tips of the threshing teeth 57. In response to rotation drive of the threshing cylinder 52, the wide width part H plunges in and passes between the roots Wa of the reaped grain culms W held by the holding conveyance mechanism 55.SELECTED DRAWING: Figure 5

Description

  The present invention includes a handling cylinder provided in a state capable of being rotationally driven around a handling cylinder axis in a handling chamber, and a state in which the outer circumference of the handling cylinder projects outward in the radial direction of the handling cylinder. Self-protruding comprising a threshing device having a plurality of tooth handling provided, and a sandwiching and transporting mechanism for sandwiching and transporting the stock side of the harvested cereal rice bran while positioning the tip side of the harvested cereal rice cake in the handling chamber Regarding type combine.

  In the threshing device, the tip of the harvested cereal rice cake that passes through the handling chamber is driven by rotating the handling barrel and holding the stock of the harvested cereal rice cake by the holding conveyance mechanism and conveying it along the axis of the handling drum axis. The teeth are touched one after the other, and the grains can be handled in the handling chamber (threshing process).

  By the way, for example, the tooth handling uses a metal bar bent in a chevron shape, and is arranged so that the front face of the chevron shape faces the axis of the handle cylinder, and is fixed to the outer peripheral surface of the handle cylinder. There is. In this case, the thickness dimension of the tooth handling (the width dimension along the barrel axis direction) is the same value at both the proximal end and the distal end of the tooth handling.

Most of the threshed grains separated from the harvested cereal grains by the threshing process move to the lower sorting device while being scattered in the handling chamber. As a result of falling to the stockholder side of the cocoon, it may get caught between the trapped bunches. Here, this phenomenon is called “Sarisari”, and the grains sandwiched between the wastes are called “Sarisari Grains”.
Since the small grains are discharged out of the machine together with the waste after threshing, the threshing efficiency is reduced.

  Conventionally, as this type of self-removing combine, there has been a modification to the shape of the tooth-treating in order to separate the small grains sandwiched between adjacent wastes from the wastes (for example, Patent Document 1).

Specifically, the shape of the tooth treatment is a triangular pyramid, and one of the three ridge corners of the tooth treatment is placed on the front side in the rotation direction of the treatment drum. The bottom surface was fixed in a state along the outer peripheral surface of the barrel.
Therefore, while the ridge corner located on the front side in the rotation direction enters between the adjacent exclusions, the entire two circumferential surfaces of the triangular pyramids that are respectively obliquely rearward across the ridge corners are adjacent to the rejection. While abutting, the interval is widened, and the simple grains can be recovered by dropping from the waste.

JP 2007-236276 A (FIGS. 4, 5, and 6)

  According to the conventional self-decomposing combine described above, when collecting the small grains from the waste, the entire two peripheral surfaces on the front side in the rotational direction of the triangular pyramid-shaped tooth handle are adjacent to the stock. The spacing between the rejects is expanded while being brought into contact with each other, so that the above-mentioned simple grains are dropped from between the rejects.

Accordingly, since the entire peripheral surface of the tooth handling is brought into contact with the reject, there is a possibility that the frictional force acting between the tooth handling and the reject is increased. Along with this, the excision that receives a large external force from the tooth treatment of the triangular pyramid easily changes its posture, and there is a risk that the alignment state of each excretion in the stock will be disturbed.
As a result, the position of the tip side of the harvested cereal culm in the handling chamber is also likely to shift, and there is a possibility that the threshing performance of other tooth handling will be reduced.

  Accordingly, an object of the present invention is to provide a self-decomposing combine that can eliminate the above-mentioned problems and prevent grain squeezing while maintaining threshing performance and can improve threshing efficiency as a whole.

  A feature of the present invention is that a handling cylinder provided in a state where it can be rotationally driven around a handling cylinder axis in a handling chamber, and protrudes radially outward of the handling cylinder at an outer peripheral portion of the handling cylinder. A threshing device having a plurality of tooth handling prepared in a state, and a sandwiching and transporting mechanism for sandwiching and transporting the stock side of the harvested cereal meal while positioning the tip side of the harvested grain meal in the handling chamber, The front end portion of the tooth handling is provided with a wide portion whose width dimension along the axial direction is larger than the base end portion of the tooth treatment. It exists in the place comprised so that it may interrupt and pass between the stocks of the said harvested cereal rice cake clamped by the mechanism.

  According to the present invention, since the width dimension along the axis direction of the handle cylinder is provided at the distal end portion of the tooth handle, which is larger than the base end part of the handle tooth, the nipping conveyance is performed with the rotation of the handle cylinder. The wide portion interrupts the position between the stocks of the harvested cereal grains that are nipped and transported by the mechanism, and widens the interval between the adjacent sterilizations, so that the grains can be removed from the slaughter and collected.

  Further, since the base end portion of the tooth treatment has a smaller width dimension than the wide portion, the base end portion is unlikely to come into contact with the waste swollen by the wide portion. By reducing the contact area, the frictional force acting between them can be reduced. Therefore, it is possible to reduce the external force that acts from the tooth handling to the waste, and to promote the drop-off of the simple grains in a state where the alignment state of the waste is hardly disturbed.

  As a result, it is possible to maintain the posture stability of the harvested cereal rice bran that is nipped and conveyed by the nipping and conveying mechanism, and it is also difficult to shift the passing position on the tip side, so that the threshing performance by other tooth handling can be maintained. Thus, the threshing efficiency as a whole can be improved, including the effect of preventing grain depletion.

  Moreover, since the wide part is provided in the front-end | tip part of a tooth-handling, a wide part can pass now the position near the stock base of a harvested cereal meal. As a result, it is possible to greatly expand even if the width dimension of the wide portion is set small when the adjacent waste on the stock side is expanded.

Therefore, the tooth handling itself provided with the wide portion can be formed compactly.
As a result, it is possible to reduce the above-mentioned frictional force and reduce the weight of the tooth handling, and to realize a reduction in the rotational driving load of the handling cylinder. Furthermore, cost reduction can be achieved by downsizing the tooth handling.

  In the present invention, it is preferable that the wide portion is provided in the tooth handling disposed on the terminal end side of the handling drum.

  Since the above-mentioned “salari” may occur in the entire length from the start end side to the end side of the handling cylinder, as in the present configuration, by providing a handle tooth with a wide portion on the end side, the holding and conveying mechanism It is possible to collect the small grains at the final position of the harvested grain culm that is nipped and conveyed, and to avoid duplication and efficiently prevent the small grains.

  In the present invention, the handling chamber is provided with a plurality of chopping blades, and the wide portion is on the lower side in the grain conveying direction with respect to the position of the chopping blade disposed on the most terminal side among the plurality of chopping blades It is suitable if it is provided on the tooth-handling arranged on the surface.

  According to this configuration, since the tooth handling disposed on the lower side in the grain conveying direction than the position of the most disposed cutting edge is provided with a wide portion, excess cutting with the cutting blade For the harvested cereal after being cut, it is possible to collect the small grains by the wide portion, and to perform the threshing process efficiently in an environment that is easier to collect.

  In the present invention, it is preferable that the wide portion has a contact surface with the harvested cereal rice cake formed in a spherical surface shape.

According to this configuration, since the contact surface of the wide portion is formed in a spherical surface shape (for example, a spherical surface or an elliptical spherical surface), when the wide portion pushes the adjacent exclusion, the corner is difficult to stand and smooth. It can pass in contact with the waste.
Therefore, it is possible to efficiently collect the grains without disturbing the alignment state of the waste.

  In the present invention, it is preferable that the tooth handling provided with the wide portion is constituted by a rod-shaped member.

  According to this configuration, since the tooth-handling can be formed with a very simple structure using a rod-shaped member, it is possible to reduce the cost, and it is difficult for the waste to be entangled with the tooth-handling, and the threshing process can be executed smoothly. .

It is a left view of a combine. It is explanatory drawing of the left view which shows a threshing machine body. It is explanatory drawing of the rotation axis center direction view of a threshing part. It is explanatory drawing of the rotation axis center direction view of a threshing part. It is plane view explanatory drawing which shows the principal part of a threshing part. It is explanatory drawing of the rotating shaft core direction view which shows the principal part of a threshing part. It is detail explanatory drawing of the rotation axis center direction view of the tooth handling provided with the wide part. It is a VIII-VIII arrow line view in FIG. It is detail explanatory drawing of the rotation axis center direction view of the tooth handling provided with the wide part of another embodiment. It is a XX arrow line view in FIG. It is detail explanatory drawing of the rotation axis center direction view of the tooth handling provided with the wide part of another embodiment. It is a top view of the tooth-handling axial center direction view of the tooth-handling provided with the wide part of another embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, the self-removing combine is self-propelled by a pair of left and right crawler-type traveling devices 10, and the front end of the machine body frame 1 of the traveling aircraft is pre-processed by the pre-cutting processing device 2. The base end side of the frame 20 is rotatably connected.
Further, the machine frame 1 is provided with a driving unit having a driving seat 11 behind the pre-cutting processing device 2, and on the rear side thereof, threshing machines (corresponding to a threshing device) 50 are arranged side by side. A Glen tank (an example of a grain recovery unit) 13 is provided, and a waste disposal unit 3 is provided on the rear side of the threshing machine body 12.

  The combine described here is for harvesting grains such as rice and wheat, and the pretreatment frame 20 is swung up and down with respect to the machine body frame 1 by a lift cylinder 2 a connected to the pretreatment frame 20. It is configured to be operable. Due to the up and down swinging operation of the preprocessing frame 20, the pretreatment frame 20 is grounded to the working position where the pre-cutting processing device 2 is lowered to the vicinity of the farm scene and the non-working position separated from the farm scene to the ascending side. The posture can be changed freely.

  As the traveling machine body travels with the pre-cutting processing device 2 set as the working position, the plurality of planted cereal grains positioned between the dividers 2b at the left and right ends of the pre-cutting processing device 2 are caused by the pulling device 21. It is processed and cut by the clipper type cutting device 22, and the harvested cereal meal is conveyed to the rear side of the machine body by the conveying device 23.

  The harvested cereal meal supplied from the transport device 23 is sandwiched by a threshing feed chain (corresponding to a sandwiching transport mechanism) 55 arranged on the side of the handling port 54 of the threshing section A constituting the upper half of the threshing machine body 50. While being conveyed, the threshing process is performed in the handling cylinder 52 provided in the handling chamber K of the threshing unit A.

  The threshing grains separated from the harvested cereal grains by the threshing process are passed to the swing sorting device 58 provided in the sorting unit B constituting the lower half of the threshing machine body 50, and then supplied to the Glen tank 13 to be vertically aligned. It is taken out of the machine by a grain carrying out auger 14 configured to be rotatable around y1.

  On the other hand, the threshing waste is moved to the culm shredding device 4 by the waste transporting device 3 a in the waste processing unit 3 and then shredded by the stalk shredder 4, It is discharged from the discharge port 4a to the rear side of the traveling machine body.

Next, the threshing machine body 50 will be described.
As described above, the threshing machine 50 includes the threshing portion A in the upper half and the sorting portion B in the lower half (see FIG. 2).

  The inside of the threshing section A is a handling chamber K. In this handling chamber K, the threshing machine body 50 has a rotation axis F (corresponding to a handling cylinder axis) P and a rotation direction F (see FIGS. 3 and 4). A handling cylinder 52 is provided so as to be freely driven. A receiving net 53 is provided along the handling cylinder 10 in the lower part of the handling chamber K. On the lateral side of the handling chamber K, a handling port 54 is provided across the front and rear, and the threshing feed chain 55 is provided on the lateral outer side of the handling port 54.

  In addition, the threshing feed chain 55 includes a chain body 55a formed so as to be able to be driven along the conveying direction and a clamping rail 55b arranged along the upper side thereof. The clamping rail 55b is provided in a state of being pressed and urged toward the chain body 55a. Therefore, the stock source Wa side of the harvested cereal rice bran W fed between the chain body 55a and the sandwiching rail 55b is sandwiched between them, and conveyed to the rear side as the chain body 55a is driven (see FIG. 3, see FIG.

  That is, the threshing part A sandwiches the stock source Wa side of the harvested cereal rice bran W from the combine harvesting pretreatment device 2 by the threshing feed chain 55 and conveys it to the rear of the threshing machine 50, thereby The tip Wb side of the cutting cereal W is inserted into the lower side of the handling cylinder 52 of the handling chamber K from the supply port located on the front wall of the threshing machine body 50, and the tip Wb side of the harvested grain culm W entering the lower side of the handling cylinder 52 is inserted. Threshing processing is carried out by the handling barrel 52 and the receiving net 53 on the tip Wb side by conveying in the direction along the rotational axis P of the handling barrel 52 by the handling port 54 (see FIG. 2) located on the side wall of the threshing machine body 50, A threshing processed product such as threshing grain is dropped from the mesh of the receiving net 11, and the threshing waste straw is discharged by the threshing feed chain 55 from the dust feed port 56 located at the rear end of the handling chamber K.

  In addition, the threshing process by the handling cylinder 52 is implemented by a plurality of teeth 57 provided on the outer peripheral portion of the handling cylinder 52 so as to protrude outward in the radial direction. As it rotates around the rotation axis P, the grain on the tip Wb side of the harvested culm W can be handled. Details of the tooth handling 57 will be described later.

  Further, on the inner peripheral portion of the upper wall of the handling chamber K, the scissors cutting blade 62 protruding toward the handling cylinder side without interfering with the rotation locus of each tooth 57 is spaced in the direction of the rotation axis P. A plurality are provided (see FIG. 2). This chopping blade 62 makes it easy to cut and remove the slag falling off the threshing feed chain 55 and rotating together with the barrel 52.

The sorting section B is provided with a swing sorting device 58, and a tang 16 is provided below the front end of the swing sorting device 58, and dust is discharged above the rear end of the swing sorting device 58. A fan 17 is provided.
In addition, a first screw conveyor 59 and a second screw conveyor 60 are provided at the bottom of the threshing machine body 50.

  That is, the sorting unit B receives the threshing processed material dropped from the receiving net 11 by the swing sorting device 58, swing sorting by the swing sorting device 58, and sorting supplied to the rear of the threshing machine body 50 by the Kara 16. Grain and dust are sorted by wind, the grain is dropped from the rocking sorter 58, and the dust is exhausted together with the sorting wind and the exhaust port 18 of the dust case or the rear part of the threshing machine body 50. It is discharged out of the threshing machine through the dust outlet 19 located in the area.

The first screw conveyor 59 receives the first one of the grains from the swing sorting device 58, conveys it in the lateral direction of the threshing machine body 50, and carries it out to the lateral outside of the threshing machine body 50.
The second screw conveyor 60 receives the second one of the grains from the swing sorting device 58, conveys it in the lateral direction of the threshing machine body 50, and carries it out to the lateral outer side of the threshing machine body 50. The second product from the No. 2 screw conveyor 60 is pumped to the reduction port located at the upper part of the horizontal wall of the threshing machine body 50 by the reduction device 61 formed of a screw conveyor, and is put into the threshing machine body 50 through this reduction port and shaken. It returns to the start side of the moving sorting device 58.

  Next, the tooth handling 57 fixed to the handling cylinder 52 will be described.

As shown in FIGS. 3 and 4, the handle cylinder 52 is formed in a cylindrical shape, and a plurality of handle teeth 57 are provided on the outer periphery of the handle cylinder 52. Each handle 57 is fixed in a state of protruding outward in the radial direction of the handle cylinder 52.
Further, the arrangement of the tooth handling teeth 57 is set so that there is a gap between the circumferential direction of the handling drum 52 and the rotation axis P direction.
In the embodiment, two types of teeth are used for the tooth handling 57.

Of the tooth handling rows provided at intervals from the starting end side to the terminal end side of the handling barrel 52, the shape of the tooth handling 57 is different in the most end side row and all rows on the starting end side. Yes (see FIG. 5).
As shown in FIG. 3, each handle tooth 57a of all rows provided at the start end side from the most end side row is composed of a round bar bent so as to form a mountain shape when viewed in the direction of the rotation axis P. It is.
Since the teeth 57a are often used in the past and are formed of round bars, the width dimension along the direction of the rotation axis P is the same for both the proximal end and the distal end. (See FIG. 5).

As shown in FIGS. 4, 7, and 8, the terminal teeth 57 b in the endmost row are provided with a wide portion H at the tip. The wide portion H is formed such that the width dimension h1 along the rotation axis P direction is larger than the width dimension h2 of the base end portion. In the present embodiment, the base end portion is formed of a round bar, and the wide portion H is formed of a sphere.
Therefore, when the handling cylinder 52 rotates, as shown in FIG. 5 and FIG. It is possible to greatly widen the adjacent waste grains W. By this spreading action, it becomes possible to drop off the “crust kernel” sandwiched between the stock Wa parts of the harvested grain culm W and collect it on the sorting section B side.

Incidentally, since the wide part H is comprised with the spherical body as above-mentioned, the contact surface Ha contact | abutted to the harvested grain mash W is a spherical surface, it does not have a corner, and the stock of the harvested grain mash W smoothly It can pass between Wa.
Moreover, since the tooth-hand 57b provided with the wide part H is arranged further to the terminal end side of the handling cylinder than the range where the heel cutting blade 62 is provided, the long tooth sag dropped from the threshing feed chain 55. It is possible to efficiently remove “crust kernels” without being adversely affected.

  According to the self-decomposing combine of this embodiment, the “crust kernel” sandwiched between the roots Wa of the harvested corn straw W being held and conveyed by the threshing feed chain 55 is smoothly and efficiently dropped by the wide portion H. Can be recovered. Furthermore, by reducing the frictional force of the wide portion H with respect to the harvested grain culm W, it is possible to promote the drop-off of the “crust grains” in a state where it is difficult to disturb the alignment state of the stubble. Therefore, it is difficult to adversely affect the threshing of the harvested grain culm W at the position of the other adjacent tooth-treating teeth 57a, and the threshing efficiency as a whole can be improved including the effect of preventing the grain from being reduced.

  In addition, the tooth handling 57b having the wide portion H can be compactly designed, and the above-described frictional force can be reduced and the weight of the tooth handling 57b can be reduced, thereby reducing the rotational driving load of the handling drum 52. it can. Furthermore, it is possible to reduce the cost by making the handle 57b compact.

[Another embodiment]
Other embodiments will be described below.

<1> The arrangement of the tooth handling teeth 57 is not limited to the setting of the previous embodiment, and can be changed as appropriate.
Further, the number, arrangement, arrangement, and the like of the tooth handling teeth 57b including the wide portion H can be changed as appropriate.
Moreover, it replaces with providing the wide part H in a part of tooth-handling 57, and you may provide the wide part H in all or most of the tooth-handling 57.

<2> The wide portion H is not limited to the sphere described in the previous embodiment. For example, as shown in FIGS. 9 and 10, a part of the outer peripheral surface, in particular, the contact surface to the harvested cereal wrinkle W May have a spherical surface.
Further, the spherical surface may include a plurality of curved surfaces having different curvatures in addition to a perfect spherical surface.
According to the embodiment shown in FIGS. 9 and 10, the wide portion H is concentrated on the front side in the rotation direction of the handling cylinder 52 and the hollow portion is provided to reduce the amount of material used. It is possible to reduce the cost and weight.

<3> The wide portion H may not have a spherical surface. For example, as shown in FIGS. 11 and 12, a wedge shape having a ridge angle portion on the front side in the rotation direction of the handling cylinder 52. It may be.
In this embodiment, the length dimension h <b> 3 along the rotation direction of the handling cylinder 52 in the wide portion H is formed smaller than the width dimension h <b> 1 along the rotation axis P direction of the handling cylinder 52. Therefore, the time for the wide portion H to pass through the stock Wa of the harvested cereal rice cake during nipping conveyance can be shortened, and the conveyance resistance can be prevented from increasing.

  In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry. In addition, it goes without saying that the present invention can be carried out in various modes without departing from the gist of the present invention.

  The said combine can be utilized also for the self-removal type | mold which mounts the bagging tank instead of a Glen tank.

50 Threshing machine (equivalent to threshing device)
52 Handling cylinder 55 Threshing feed chain (corresponding to nipping and conveying mechanism)
57 Teeth handle 57b Teeth on the endmost row 62 ６２ Cutting blade H Wide part Ha Contact surface h1 Wide part width dimension K Handling room P Rotating shaft core (corresponding to handling cylinder shaft core)
W Cutting grain cereal Wa Stock source Wb Ear

Claims (5)

A handling cylinder provided in a state capable of being driven to rotate around a handling cylinder axis in the handling chamber, and a plurality provided in a state of projecting radially outward of the handling cylinder at an outer peripheral portion of the handling cylinder A threshing device having a tooth handling,
A holding and conveying mechanism for holding and conveying the stock side of the harvested cereal rice cake while positioning the tip side of the harvested rice cereal rice cake in the handling chamber,
The distal end portion of the tooth handling is provided with a wider portion having a width dimension along the axial direction larger than the proximal end portion of the tooth handling teeth, and the wide portion is sandwiched by the rotational drive of the handle barrel. A self-removing combine configured to interrupt and pass between the stocks of the harvested cereal rice cake held by a transport mechanism.   The self-removable combine according to claim 1, wherein the wide portion is provided on the handle teeth arranged on a terminal end side of the handling cylinder.   The handling chamber includes a plurality of chopping blades, and the wide portion is disposed on the lower side in the grain transporting direction than the position of the chopping blade disposed on the most terminal side among the plurality of chopping blades. The self-removing combine according to claim 1 or 2, which is provided on the tooth handling.   The self-detaching combine according to any one of claims 1 to 3, wherein the wide portion has a contact surface with the harvested cereal rice cake formed in a spherical surface shape.   The self-removable combine according to any one of claims 1 to 4, wherein the tooth handling provided with the wide portion is configured by a rod-shaped member.

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