JPH09271257A - Grain carrying device in thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mechanism for turning ear-broken grains and rachis- branch grains, etc., inside secondary objects threshed and selected by a thresher to simple grains and restoring them to the inside of the thresher. SOLUTION: Processing projections 42 are projectingly provided on the inner peripheral surface of a carrying cylinder 21 for covering a carrying helix 22 for transfer provided in a carrying device 19 for carrying grains threshed in a threshing cylinder. Also, processing members 32 for pushing out the grains during carriage to a helix outer peripheral direction are provided on the carrying surface of the carrying helix 22 and further, the processing projections 42 are tilted with an advance angle in a grain carrying direction along the carrying surface outer periphery of the carrying helix 22.

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 threshing machine mounted on a combine or a harvester has a function of allowing a threshed grain to leak from a receiving net by a handling cylinder.
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 fraction separated as described above contains ear-cut grains and branch stalks and the like. The final sorting accuracy will be reduced if the whole threshing efficiency is deteriorated due to the burden on the re-sorting etc. after reduction transport due to the grain, or if the grain after re-threshing contains ear cuttings or branch stalks. When the grain after threshing is dried by a dryer, there is a disadvantage that inconveniences such as clogging of the dryer occur due to branch stems separated by drying.

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.

[0005]

A grain conveying device in a threshing machine of the present invention for solving the above problems is provided with a device 19 for conveying the grains threshed by the handling cylinder 7, and the conveying device 19 The first characteristic is that the processing projection 42 is provided on the inner peripheral surface of the transporting cylinder 21 in the transporting spiral 22 for transporting and the transporting cylinder 21 that covers the transporting spiral 22.

A second feature is that the conveying surface of the conveying spiral 22 is provided with a processing member 32 which projects in the direction of the spiral shaft 22a and pushes out the grain being conveyed in the spiral outer peripheral direction.

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 with an advance angle inclining toward the grain transport direction.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 includes an oscillating sorter 9 for oscillating and sorting the leaked grains, and a Karamin fan 1 for generating a sifting 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 reduction transport device 19 for lifting and transporting the second product laterally transported to one end and returning it to the rocking 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 performs the same threshing, sorting, and grain transporting operations as in the conventional case. 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 has a second vertical spiral 22 having a structure which will be described later, and a second vertical spiral 22 which is vertically provided on one end side 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 an end of the second horizontal spiral 18 by a connecting means (chain) 27, and the second horizontal spiral 18 is driven to rotate as in the prior art. And 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.

Thereafter, the second product lifted and conveyed is released into the sorting section 5 by a springing action of a jumping plate 28 provided on the upper end side of the second vertical spiral 22, and is 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, the second vertical helix 22 is formed by integrally mounting a spiral strip plate member 22b on the outer periphery of a vertical rotating shaft 22a, as in the conventional case, and the 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, flanges 36 and 37 project in the front-rear direction on the fixing portion 33 and the lid portion 34, and a plurality of fixing members provided with a screw portion 39 at the tip end provided with 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 portion 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 with respect to the 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 delayed in transportation at the interval t and the amount of the second product increases. As a result, the second grains are rubbed or rubbed with 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 spiral 22 is constructed as described above, the processing plate 32 provided on the second vertical spiral 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 stem particles, the panicle cutting grains and the like contained in the second product are made into almost single grains during the reducing and conveying, the swinging sorting body 9 is unnecessarily undesired in the swing sorting 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 42 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 projection 42 is set so that the second objects do not hinder and the single grains do not break when they come into contact with each other. 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 action of branch prickles or the like or to cope with various kinds of rice and 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.

[0028]

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 before by the grain transportation by the above-mentioned transporting device, even if the grain after threshing is dried, the dryer may be clogged due to branch stems. 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.

In the case where the conveying member is further provided with a treating member, since the treating member pushes out the grains being conveyed in the outer peripheral direction of the spiral, the grains are positively brought into contact with the inner peripheral surface of the conveying cylinder, and the ears 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 member 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 threshing machine.

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 Processing Member 42 Processing Protrusion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Noboru Ito 667 Izamocho, Higashi Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd. Address 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Misao Kitasaka 667 Izuyacho, Higashi Izumo Town, Yatsuka-gun, Shimane Prefecture 1 Inside Mitsubishi Agricultural Machinery Co., Ltd.

Claims (3)

[Claims] 1. A device (19) for conveying threshed grains on a handling cylinder (7) is provided, which convey device (19) covers a conveying spiral (22) for transfer and the conveying spiral (22). A grain transporting device for a thresher, which is provided with a transporting cylinder (21) and is provided with a processing protrusion (42) protruding from the inner peripheral surface of the transporting cylinder (21). 2. The transport surface of the transport spiral (22) comprises:
The grain transfer device for a thresher according to claim 1, further comprising a processing member (32) which projects in the direction of the spiral shaft (22a) and pushes out the grain being transferred in the spiral outer peripheral direction. 3. The processing projection (42) is provided with a conveying spiral (2).
The grain conveying device for a thresher according to claim 1 or 2, wherein the grain conveying device is provided along the outer periphery of the conveying surface of (2) and is inclined with a forward angle toward the grain conveying direction.