JP3410605B2 - Grain conveyor in threshing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain conveying device in a thresher having a structure in which after threshing grains are sorted, further sorting is performed.

[0002]

2. Description of the Related Art Conventionally, a thresher mounted on a combine harvester or a harvester causes the grains threshed by the handling barrel to leak from the net.
This is sorted in the sorting section and sorted into the first and second products, and the first product is transported horizontally and the first horizontal helix and the grain lifting device with the lifting helix are installed in the grain tank. On the other hand, while the second conveyor is lifted and conveyed, the second conveyor is reduced and conveyed to the sorting section by the second transverse spiral that conveys in the horizontal direction and the reduction conveyor device that incorporates the second vertical spiral that conveys the lift. In general, the structure is such that the second product is sorted again.

[0003]

However, the second cuts sorted as described above include panicles, branch shoots, etc., which are contained in the second cut. Since the grains are burdened with re-sorting after reducing and transporting, the overall threshing efficiency deteriorates, and if the grains after reducing threshing include spike cuttings and twigs, the final sorting accuracy will be reduced. When the grains are reduced and the grains after threshing are put in a drier, there is a disadvantage that the branch stems separated by the drying cause inconveniences such as clogging of the drier.

On the other hand, in order to avoid the above-mentioned drawbacks, etc.
As disclosed in Japanese Patent Publication No. 43134, there is known a method in which branch stem particles, panicle cutting grains and the like contained in the second product are made into a single grain and reduced and conveyed to a sorting section. It has a processing part with a processing tooth for slicing the cutting grain etc. at the end of the No. 2 horizontal spiral, and has a mechanism for slicing the No. 2 grain during the reduction conveyance of the No. 2 grain. is there. However, in this case, the processing section is relatively large and the mechanism is complicated, which requires a relatively large space for mounting and has a drawback that the cost is significantly increased.

The grain conveying device in the threshing machine of the present invention for solving the above problems is provided with a conveying device 19 for conveying the grains threshed by the handling cylinder 7, and the conveying device 19 conveys the grains for transfer. A helix 22 and a transport cylinder 21 that covers the transport helix 22.
And the processing projection 42 is provided so as to project from the inner peripheral surface of the transport cylinder 21, and the transport surface of the transport helix 22 directly acts on the grain being transported, and
By extruding in the direction of the circumference of the shank
The processing member 32 that removes and cuts the panicle and the branching grain into single particles
Provided between the processing member 32 and the back surface of the transport surface on the transport front side.
To pass the grain, and at the time of passing the grain, the processing member
The first feature is that a space is provided so that 32 acts directly on the grain .

Further, the third feature is that the processing projections 42 are provided along the outer periphery of the transport surface of the transport helix 22 so as to be inclined at an advance angle in the grain transport direction.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a left side view of an automatic feeding threshing machine 1 to which the present invention is applied. The automatic feeding threshing machine 1 is a threshing unit 2 for threshing a harvested culm and a sorting for selecting the threshed grains. The unit 5 and the grain tank 3 for storing the grains after the threshing selection are configured. At this time, the threshing unit 2
Feed chain 6 that conveys cut culms along the handling room 4
And a handling cylinder 7 for threshing the transported grain culms, which is separated from the sorting unit 5 located below the threshing unit 2 by a receiving net 8 that leaks the handled waste. ing.

On the other hand, the sorting section 5 swings and sorts the leaked grains by swinging, and the Kara-mino fan 1 that creates a sorting wind.
1, a dust-exhausting fan 12 for forcibly discharging straw and the like, a first storage portion 13 for storing the first product sorted by the swing sorting body 9, and a branch stem grain not stored as the first product, A second housing portion 14 for housing a second material containing panicles, etc., and a first horizontal spiral 16 for laterally conveying the first material housed in the first housing portion 13 to one end of the first housing portion 13. And a hoisting device 17 for hoisting and carrying the first thing laterally conveyed to one end to the grain tank 3, and one end of the second accommodating section 14 for the second object accommodated in the second accommodating section 14. No. 2 horizontal spiral 18
And a reducing and conveying device 19 and the like that lifts and conveys the second object laterally conveyed to one end and returns it to the swing sorting body 9.

The above-described structure is the same as the structure of the threshing section 2 and the sorting section provided in the conventional automatic feeding threshing machine, and the same threshing, sorting, and grain transporting operations as in the conventional case are performed. The grain carrying device of the present invention is applied to the reducing and carrying device 19 for returning the second product, and its configuration and operation will be described in detail below.

As shown in FIGS. 2 and 3, the reducing and conveying device 19 is provided with a second vertical spiral 22 having a structure which will be described later and a second vertical spiral 22 which is vertically provided at one end of the second accommodating portion 14. A transport cylinder 21 that covers the spiral 22 in a substantially cylindrical shape is provided, and is provided on the right outer side of the sorting unit 5. At this time, the second vertical spiral 22 is rotatably mounted inside the conveying cylinder 21, and a sprocket 24 is provided on the lower end side of the second vertical spiral 22 via a bevel gear mechanism 23.

The sprocket 24 is connected to a sprocket 26 provided at the end of the second horizontal helix 18 by a connecting means (chain) 27, and the second horizontal helix 18 is driven to rotate as in the conventional case. Then, the second vertical spiral 2
2 is rotatably driven in accordance with the second horizontal spiral 18, and the second object in the second storage part 14 is horizontally transferred to one end of the second storage part 14 by the rotation of the second horizontal spiral 18, and the horizontal transfer is performed. The second object is lifted and conveyed upward by the rotation of the second vertical spiral 22.

After that, the second object thus lifted and conveyed is discharged into the sorting section 5 by the jumping action of the jumping plate 28 provided on the upper end side of the second vertical spiral 22, and is then moved to the swing sorting body 9 side. Be reduced. At this time, a discharge unit 31 having an open end is provided at the upper end of the transport cylinder 21, and the second end of the lifted and conveyed second product is discharged into the sorting unit 5 by the open end. 5 is performed through the discharge part 31 attached to the opening portion of the side wall 5a of No. 5.

On the other hand, as in the conventional case, the second vertical spiral 22 is formed by integrally mounting a spiral strip plate member 22b on the outer periphery of a vertical rotating shaft 22a, and a conveying surface of the upper spiral strip plate member 22b. On the (upper surface), a plurality of processing plates 32 each having a substantially L-shaped cross section, which is a processing member protruding in the direction of the rotating shaft 22a and extending in the radial direction of the spiral, are provided at predetermined intervals in the spiral direction. The processing plate 32 is fixed to the spiral band plate member 22b and the rotary shaft 22a. With the above structure, the processing plate 32 pushes out the second object being conveyed to the inner peripheral surface side of the conveying cylinder 21 when the second vertical spiral 22 rotates and the second object is lifted and conveyed.

Next, the structure of the transport cylinder 21 will be described.
The transfer cylinder 21 is composed of a fixed portion 33 fixed to the side wall 5a of the sorting portion 5 and a lid portion 34 provided on the upper side of the fixed portion 33 and detachable from the fixed portion 33. The lid 34 is attached to the fixed portion 33 so that the portion of the transfer cylinder 21 where the lid 34 is provided covers the circumference of the second vertical spiral 22 in a cylindrical shape.

At this time, the fixing portion 33 and the lid portion 34 have flanges 36 and 37 projecting in the front-rear direction, and a plurality of fixing members provided with a screw portion 39 at the tip having a grip portion 38 having a relatively large diameter. The lid portion 34 is attached to the fixing portion 33 by fixing both flanges 36 and 37 with 41. That is, the lid portion 34 is configured by the cover portion 35, which is attached to the fixing portion 33 and forms a part of a cylinder that covers the outer periphery of the second vertical spiral 22 together with the fixing portion 33, and the flange 37.

The operator holds the grip portion 38 of the fixing member 41.
By removing the fixing member 41 from the side of the transport cylinder 21 while holding, the fixing portion 33 and the lid portion 34 can be easily attached and detached. The fixing portion 33 has a structure in which the lid portion 34 is attached and detached from the right side, and the transfer cylinder 21 (fixing portion 3
Since 3) is provided on the right side of the sorting section 5 as described above, there is no obstacle on the right side of the fixing section 33, and the lid section 34 is provided.
Can be attached and detached more easily.

On the inner peripheral surface of the cover portion 35 of the one-side lid portion 34, as shown in FIGS. 3 to 5, a processing protrusion 42 having a quadrangular sectional shape protruding inward is formed.
Are provided along the circumferential direction on the inner peripheral surface of at a predetermined interval in the vertical direction. At this time, the processing protrusion 42 is covered by the cover 35.
Of the second vertical spiral 22 is attached to a portion facing the processing plate 32 when the lid 34 is attached to the fixing portion 33, and is substantially opposite to the outer periphery of the conveying surface (upper surface of the spiral band plate material 22b) of the second vertical spiral 22. . The processing projection 42 may have a cross-sectional shape such as a circle, an ellipse, or a polygon.

The processing projection 42 is continuous at a predetermined height and is inclined along the outer circumference of the second vertical spiral 22 carrying surface in the carrying direction of the second object with an advance angle. ing. By attaching the lid portion 34 to the fixing portion 33 as described above, the processing protrusion 42, which is inclined at an advance angle in the conveying direction of the second product, is provided on a part of the inner peripheral surface of the conveying cylinder 21 so as to project therefrom. To be

Since the lid portion 34 is configured as described above, the distance between the outer peripheral surface of the second vertical spiral 22 (spiral strip plate material 22b) and the inner peripheral surface of the transport cylinder 21 is shown in FIG. As described above, in the portion where the processing protrusion 42 is provided, the processing protrusion 42 narrows the interval t on the lid portion 34 side with respect to the interval T on the fixed portion 33 side. That is, the interval for the second product to pass upward when the second product is lifted and conveyed is narrower on the lid portion 34 side than other portions.

Therefore, when the reducing and conveying device 19 (second vertical spiral 22) lifts and conveys the second product, the second product is transported slowly at the interval t and the amount of the second product increases. As a result, the second grains are rubbed or rubbed against each other, so that the panicle grains and the branch shoot grains are made into a single grain, and the second grain that has become a single grain is reduced and conveyed to the sorting unit 5 to the swing sorting body 9. Be reduced.

Further, since the second vertical helix 22 is constructed as described above, the processing plate 32 provided on the second vertical helix 22 directly acts on the second material to be lifted and conveyed, so that the cutting particles and the cuttings are removed. Not only does the branching grain become a single grain as much as possible, but the processing plate 32 pushes the second object outward with the rotational drive of the second vertical spiral 22 to bring it into contact with the inner peripheral surface side of the transport cylinder 21. By utilizing the friction generated based on the contact, it is possible to further promote the slicing of the panicle grains and the branch shoot grains into single grains.

As described above, since the branch shoot particles, the panicle cutting particles and the like contained in the second product are almost made into single particles during the reduction conveyance, the swing selecting body 9 is unnecessarily undesired in the swing selecting body 9 during the re-sorting. The cutting burden after reduction conveyance is reduced because the cuttings are not mixed, and the threshing efficiency is improved overall, and the single grain ratio in the grain after threshing is higher than before, and after threshing, Even when the grains are subjected to a processing device such as a drier (not shown), the inconvenience such as clogging of the drier due to branch stems or the like does not occur.

At this time, since the processing protrusion 42 is provided on the lid portion 34, the maintenance of the processing protrusion 42 can be easily performed by removing the lid portion 34 from the fixing portion 33, and at the same time, the processing protrusion 42 and the second protrusion can be removed. Maintenance with the vertical spiral 22 can be easily performed.

Further, since the processing projection 42 is inclined along the outer periphery of the conveying surface of the second vertical spiral 22 with a forward angle in the conveying direction of the second object, the second object is lifted and conveyed. Smooth lifting transportation is performed without obstruction more than necessary. Since the grain singulation mechanism of the present invention can be configured by attaching the processing plate 32 and the processing protrusion 42 to the conventional reducing and conveying device 19, no special space for attachment is required, and the parts are The number of points is small, the mechanism is simple, and it is advantageous in terms of cost.

The distance t between the second vertical helix 22 and the processing protrusion 42 is set so that the second objects do not hinder each other or the single grains do not break. Further, in the present embodiment, each processing protrusion 42 is continuously formed from the end portion to the end portion of the inner peripheral surface of the cover portion 35 of the lid portion 34. The effect can be obtained. On the other hand, the processing protrusion 42 may be provided not only on the lid portion 34 side but on both the lid portion 34 side and the fixed portion 33 side, or may be provided only on the fixed portion 33 side. Further, one processing protrusion 4 is provided on the fixing portion 33 or the lid portion 34.
2 is provided all around the inside of the transport cylinder 21,
The processing protrusion 42 may be attached.

In addition, the treatment protrusion 42 has an inclination angle, in order to improve the removal effect of branch stems or the like, or to cope with various kinds of rice or the like.
The mounting position and cross-sectional shape may be changed. Further, in the present embodiment, an example in which the reducing and conveying device 19 for the second product is provided with a singularizing mechanism for branching kernels, cuttings, etc. has been described for the lifting device 17 for lifting and transporting the first product. The singulation mechanism of the embodiment may be provided.

[0027]

According to the present invention configured as described above, when the grains threshed by the handling cylinder are conveyed, the gap between the conveying spiral and the conveying cylinder in the conveying device is treated by the conveying cylinder. The area where the projection is provided is narrower than other areas. For this reason, for example, by using the transport device as a reducing transport device that returns the second product to the sorting section, the narrowed gaps cause branching grains and spike cuttings in the second product to become single particles during the reduction transport. Is
The burden of re-sorting after reduction transportation is reduced, and the threshing efficiency is improved overall.

Further, since the single grain ratio in the grain after threshing becomes higher than the conventional one by the grain transport by the above-mentioned transport device, even when the grain after threshing is dried, the clogging of the dryer due to branch stems, etc. There is no inconvenience. At this time, if the processing projections are inclined along the outer circumference of the transport surface of the transport helix, the processing projections do not obstruct the route of the grain being transported more than necessary, so the kernels are branch stems or panicles. And the like are smoothly conveyed while being made into single particles.

Further, in the case where the conveying member is provided with the treating member, the treating member pushes out the grain being conveyed in the outer circumferential direction of the spiral, so that the grain is positively brought into contact with the inner peripheral surface of the conveying cylinder and It is possible to further promote the singulation of cut grains and branch stem grains.

Since the mechanism for making the grains into single grains is composed of the treatment protrusions or the treatment members and the treatment protrusions,
The single graining mechanism does not require a special space for mounting and has a small number of parts, so the mechanism is simple and advantageous in terms of cost.

[Brief description of drawings]

FIG. 1 is a left side view of an automatic feeding thresher.

FIG. 2 is a perspective view of a reduction conveyance device portion.

FIG. 3 is a rear cross-sectional view of the reduction conveyance device.

4A and 4B are a front view and a perspective view of a lid portion.

FIG. 5 is a plan view of a reduction conveyance device.

[Explanation of symbols]

7 Handling Cylinder 19 Reduction Conveying Device (Conveying Device) 21 Conveying Cylinder 22 Second Vertical Helix (Conveying Helix) 22a Rotating Axis (Helix Axis) 32 Treatment Plate ( Treatment Member ) 42 Treatment Protrusion

Continued front page    (72) Inventor Kenichi Adachi               Shimane Prefecture Higashi-Izumo Town Higashi Izumo Town Oya 667               Ground 1 Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Misao Kitasaka               Shimane Prefecture Higashi-Izumo Town Higashi Izumo Town Oya 667               Ground 1 Mitsubishi Agricultural Machinery Co., Ltd.                (56) Reference JP-A-1-256419 (JP, A)                 61-74340 (JP, U)                 Actual Development Sho 56-24855 (JP, U)                 Actual Kaihei 6-57129 (JP, U)                 Actual Kaihei 2-148251 (JP, U)

Claims (2)

(57) [Claims] 1. A transport device (19) for transporting threshed grains by a handling cylinder (7), the transport device (19) for transporting a transport spiral (22) and a transport spiral (22). A transporting cylinder (21) provided with a transporting cylinder (21) for covering.
A processing protrusion (42) is provided so as to project on the inner peripheral surface of the, and is directly produced on the grain being conveyed on the conveying surface of the conveying spiral (22).
Use and push the grain toward the outer circumference of the spiral
Remove the ear cuttings and shoots and remove the shoot cuttings and shoots.
A processing member (32) for making a single grain is provided, and the processing member (32)
Between the front side of the conveyor and the rear side of the front side of the conveyor.
And when the grain passes through, the processing member (32)
A grain conveying device in a thresher having a space so as to directly act . 2. The processing projection (42) is provided with a conveying spiral (2).
The grain transfer device for a thresher according to claim 1, wherein the grain transfer device is provided along the outer periphery of the transfer surface of (2) and is inclined with a forward angle toward the grain transfer direction.