JP2022021782A - Thresher - Google Patents

Abstract

To provide a thresher that can perform proper threshing without damaging grains and culm wastes of crops to harvest.SOLUTION: A thresher includes: a threshing cylinder 28 for threshing crops loaded into a front part of a threshing chamber 27; a turning spindle 29 provided in the threshing cylinder 28 so as to be rotatable in a posture along a longitudinal direction of the threshing chamber 27; multiple rod-like frame bodies 30a aligned while being arranged along a longitudinal direction in an outer periphery of the turning spindle 29 and spaced apart in a circumferential direction; and threshing teeth 50 fixed to the frame bodies 30a. The threshing teeth 50 are constituted of rasp threshing teeth formed with irregularities at the surface thereof and exerting threshing to crops with the irregularity shape at the surface thereof.SELECTED DRAWING: Figure 3

Description

The present invention relates to a threshing device for threshing harvested crops.

The threshing device is provided with a handling cylinder inside the handling chamber, and the handling cylinder is provided with a rotating support shaft along the front-rear direction of the handling chamber and is rotatably supported around the axis of the rotating support shaft. Then, on the radial outer circumference of the rotary support shaft, a plurality of rod-shaped frame bodies arranged in a state along the front-rear direction and in a state of being spaced apart in the circumferential direction are integrally rotatably provided, and the rod-shaped frame body is provided. Some of the frame bodies have a plurality of round bar-shaped teeth extending outward in the radial direction (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2013-146272

In the above-mentioned conventional configuration, a strong handling force acts on the crop by the round bar-shaped handling tooth protruding outward in the radial direction, so that even when harvesting a crop that is difficult to thresh, such as rice, for example. Good threshing treatment can be performed. However, when harvesting crops that are easier to thresh than rice, such as wheat and soybean, as the target crops, the handling power is too strong and there is a risk of damaging the grains. In addition, when the stalk culm waste (exhausted straw) after the threshing process is used as animal feed, there is a disadvantage that the culm is severely damaged and may become unsuitable as animal feed. there were. There was a disadvantage.

Therefore, there has been a demand for a threshing device capable of performing an appropriate handling treatment without damaging the grains and stalk culms of the crop to be harvested.

The characteristic configuration of the threshing device according to the present invention includes a handling chamber and a handling cylinder provided in the handling chamber in a rotatable state and for performing threshing processing of crops thrown into the front part of the handling chamber. A rotary support shaft rotatably provided on the handling cylinder in a posture along the front-rear direction of the handling chamber, and a state along the front-rear direction and an interval in the circumferential direction on the outer periphery of the rotation support shaft. A plurality of rod-shaped frame bodies lined up in an open state and a tooth handling tooth fixed to the frame body are provided. The point is that it is composed of working rasp teeth.

According to the present invention, as a tooth to be fixed to the frame body, a raspe tooth having irregularities on the surface and having an uneven shape on the surface to handle the crop is used. This rasp-handled tooth has a weaker handling force on crops than a rod-shaped handling tooth that extends outward in the radial direction, so even if the crop is easy to thresh, it has a strong force on the threshed grains. There is little risk of action and damage.

Therefore, it has become possible to provide a threshing device capable of performing an appropriate handling treatment without damaging the grains and stalk culms of the crop to be harvested.

In the present invention, it is preferable that the rust handling tooth is supported by a support base attached to the frame body.

If the tooth is directly attached to the frame body, the structure of the frame body, which is a large member, may be complicated, for example, the frame body is provided with a welding nut. On the other hand, according to this configuration, it is possible to support the rasp-handling teeth without complicating the configuration of the frame body by supporting the rasp-handling teeth on the support base.

In the present invention, it is preferable that a plurality of the support bases are attached to the frame body at intervals along the axial core direction of the handling cylinder.

According to this configuration, since the support base is a small and lightweight member, it is easy to perform the assembly work of attaching the support base to the frame body.

In the present invention, it is preferable that the rasps handling tooth is removably supported with respect to the support base.

Rasp teeth may wear with long-term use. According to this configuration, the tooth for handling the rust can be removed, so that it can be easily replaced when it is worn.

In the present invention, it is preferable that the rust-handling tooth has a rod shape extending along the longitudinal direction of the frame body.

According to this configuration, since the rasps handling teeth are rod-shaped, for example, as compared with a configuration in which a large number of rasps handling teeth having a small shape short in the longitudinal direction of the frame body are attached to the frame body, the troublesomeness of assembly is reduced. Assembling work can be done easily without any.

In the present invention, a receiving net is provided along the outer peripheral portion of the handling cylinder, and the portion on the upper side in the rotation direction of the rust handling tooth is along the radial direction as compared with the portion on the lower side in the rotation direction of the rust handling tooth. It is preferable that the space between the receiving net and the receiving net is wide.

According to this configuration, when the crop is sandwiched between the rasp-handling tooth and the receiving net as the handling cylinder rotates and the handling process is performed, the upper part of the rup-handling tooth in the rotation direction is the receiving net. Since the interval is wide, the crop is easily introduced between the rasps handling tooth and the receiving net, and the handling process is smoothly performed.

In the present invention, the outer peripheral surface of the portion on the upper side in the rotation direction of the rasp handling tooth is formed as a smooth surface, and the distance between the portion on the lower side in the rotation direction and the receiving net along the radial direction becomes narrower. The portion on the lower side in the rotation direction of the rasp handling tooth is provided so as to be inclined so as to have irregularities on the outer peripheral surface and the distance between the receiving net and the receiving net along the radial direction over the entire width in the circumferential direction. It is preferable that they are substantially the same.

According to this configuration, since the outer peripheral surface of the portion on the upper side in the rotation direction is a smooth surface, the threshed product is smoothly introduced between the tooth for rubbing and the receiving net. After the introduction, the handling process is performed between the portion on the lower side in the rotation direction of the rust handling tooth and the receiving net. Further, the portion on the lower side in the rotation direction has the same distance from the receiving net over the entire width in the circumferential direction, and the handling process can be performed satisfactorily.

In the present invention, the rasps handling tooth is attached to a support base supported by the frame body, and the support pedestal has an upper support portion that supports a portion on the upper side in the rotation direction of the rustle handling tooth, and the rust. The lower side support portion for supporting the lower hand side portion in the rotation direction of the handling tooth is provided, and the upper hand side support portion is provided in a shape along the upper hand side portion in the rotation direction of the rustle handling tooth, and the lower hand side support portion is provided. It is preferable that the tooth is provided in a shape along the lower side of the tooth in the rotation direction.

According to this configuration, each of the lower side portion in the rotation direction and the lower side portion in the rotation direction of the rust-handled tooth is substantially surfaced by the upper support portion and the lower support portion of the support base. It is accepted and supported by. As a result, the handling treatment can be performed satisfactorily without any disadvantage such as bending and deformation of the tooth to be handled by the rust due to the reaction force from the threshing processed product.

In the present invention, the support base is attached in a state where a gap is formed between the lower side support portion and the frame body, and the lower side portion in the rotation direction of the rust handling tooth and the lower hand side support portion. However, it is preferable that the bolts to be mounted from above and the nuts provided in the gap between the lower support portion and the frame body are fastened and fixed.

According to this configuration, bolts are mounted from above with the rasps handling teeth and the support base inserted, and tightened to the nuts to fix them. The nut can be provided in a state where it does not protrude outward by utilizing the gap between the lower support portion of the support base and the frame body.

In the present invention, it is preferable that the handling cylinder is provided with another handling processing unit behind the handling processing unit having the rust handling teeth.

According to this configuration, since another handling processing unit is provided, by using a handling tooth of a type different from that of the rust handling tooth for this other handling processing unit, the handling processing using the rust handling tooth is sufficient. It is possible to perform processing that cannot be handled.

It is an overall side view of a combine. It is a cross-sectional plan view of a threshing device. It is a vertical sectional side view of a threshing device. It is a side view of the 2nd handling cylinder. FIG. 3 is a sectional view taken along line VV of FIG. FIG. 3 is a sectional view taken along line VI-VI of FIG. It is a vertical sectional front view of a threshing device. It is a vertical sectional front view which shows the 1st handling tooth. It is a partial perspective view of the first handling tooth. It is a top view which shows the attachment state of the 2nd handling tooth. It is a perspective view which shows the attachment state of the 2nd handling tooth. It is a top view which shows the support state of a dust valve. It is a vertical sectional front view which shows the support state of a dust valve. It is a top view of the first angle adjustment mechanism.

Hereinafter, a case where the embodiment of the threshing device according to the present invention is applied to the threshing device of a normal combine will be described with reference to the drawings. In this embodiment, the direction indicated by the reference numeral (F) is the front side of the machine body, and the direction indicated by the reference numeral (B) is the rear side of the machine body (see FIGS. 1, 2, and 3). The direction indicated by the reference numeral (L) is the left side of the aircraft, and the direction indicated by the reference numeral (R) is the right side of the aircraft (see FIGS. 2, 5, 6 and 7).

[Overall composition of combine harvester]
As shown in FIG. 1, the combine harvests and threshes the crops cut by the cutting and transporting unit 1, the driving section 3 covered with the cabin 2, and the cutting and transporting section 1 that cuts and transports the crops to the rear. Device 4, a grain tank 5 for storing grains obtained by threshing by the threshing device 4, a driving part 7 having an engine 6 as a power source, left and right front wheels 8, left and right rear wheels 9, etc. It is equipped with.

The harvesting and transporting unit 1 cuts the crops to be planted and gathers the harvested crops in the center in the cutting width direction as a harvesting unit 10. It is provided with a feeder 11 as a crop transport device for transporting to the device 4. Although not described in detail, the cutting unit 10 has a rotary reel 12 that scrapes the tip side of the crop to be cut backward, a cutting blade 13 that cuts and cuts the root of the crop, and a cutting width direction for the cut crop. A horizontal feed auger 14 and the like are provided in the central part of the.

Behind the cutting and transporting unit 1, there is provided a threshing device 4 that receives the cut grain culms carried by the feeder 11 as a threshing target and threshs them, and sorts the processed material after the threshing treatment. Above the front part of the threshing device 4, a grain tank 5 is provided to collect and store the single-grained grains transported from the threshing device 4. A prime mover 7 is provided above the rear part of the threshing device 4.

[Threshing device]
Next, the threshing device 4 will be described.
As shown in FIGS. 2 and 3, the threshing apparatus 4 is provided with a first threshing processing unit 15 in which harvested crops are carried in and threshed, and a first threshing processing unit 15 provided behind the first threshing processing unit 15. A second threshing processing unit 16 is provided, in which the threshing processed product processed by the threshing processing unit 15 is charged and threshed. The width of the first threshing processing unit 15 in the left-right direction is substantially the same as that of the feeder 11, and the width of the first threshing processing unit 15 is wider than that of the second threshing processing unit 16.

[First threshing processing department]
The first threshing processing unit 15 will be described.
The first threshing processing unit 15 is provided with a first handling cylinder 17 that rotates around the left-right orientation axis X. The first handling cylinder 17 has a rotating support shaft 18 rotatably provided in a posture along the left-right direction, and a plurality of rod-shaped handling teeth arranged along the left-right direction and at intervals in the circumferential direction. 19. A plurality of support members 20 that support a plurality of rod-shaped handling teeth 19 on the rotation support shaft 18 in a state where the radial distance from the rotation support shaft 18 is the same and in a state where the rotation support shaft 18 can be integrally rotated. Etc. are provided. The handling tooth 19 is formed in the shape of a rod extending in the left-right direction over the entire width in the left-right direction of the first handling cylinder 17, and has irregularities on the surface and also has an uneven shape on the surface to handle the crops (FIG. 9). See).

The support member 20 is composed of a plate body formed in a substantially star shape in a side view, and is provided with a plurality of support members 20 at intervals in the left-right direction. The central portion of the support member 20 is fixed to the rotary support shaft 18 and is integrally rotatably supported. The handling teeth 19 are fixed to each of the plurality of support members 20 by fastening bolts.

A first receiving net 21 is provided in a region below the first handling cylinder 17 in the outer peripheral portion of the first handling cylinder 17. When the first handling cylinder 17 is rotated counterclockwise in FIG. 3 by a drive mechanism (not shown), the crops carried by the feeder 11 are scraped by the handling teeth 19 and hit by the handling teeth 19 and the handling teeth 19 are used. It is configured to perform threshing treatment by a kneading action or the like between the first receiving net 21 and the first receiving net 21.

An intermediate transport device 22 between the first threshing processing unit 15 and the second threshing processing unit 16 to transfer the threshed product that has been threshed by the first threshing processing unit 15 toward the second threshing processing unit 16. Is provided. The intermediate transport device 22 is configured to transport the threshed product toward the second threshing processing unit 16 without leaking downward.

The left-right width of the intermediate transfer device 22 is the same as the left-right width of the first threshing processing unit 15. The intermediate transfer device 22 has a cylindrical drum 23 having a left-right axis and extending over the entire width in the left-right direction, spiral blades 24 provided on both the left and right sides of the outer peripheral portion of the drum 23, and the drum 23. A plurality of suction members 25 provided on the left and right center sides of the outer peripheral portion, and a semi-cylindrical bottom plate 26 are provided.

The left and right spiral blades 24 are fixed to the outer peripheral portion of the drum 23 and are provided in a state where the feeding directions are opposite to each other. The scraping member 25 is formed of a plate-shaped member that is fixed to the outer peripheral portion of the drum 23 and extends outward in the radial direction. A plurality of scraping members 25 are provided at appropriate intervals in the circumferential direction of the drum 23.

When the drum 23 is rotated counterclockwise in FIG. 3 by a drive mechanism (not shown), the left and right spiral blades 24 laterally feed the threshed material so as to gather them toward the center in the left-right direction. After being gathered toward the center side, the threshed product is scraped backward by the scraping member 25 and charged toward the second threshing processing unit 16.

The second threshing processing unit 16 is provided with a handling room 27 for threshing the thrown threshed product. The handling chamber 27 will be described later, but the left-right width of the handling chamber 27 is narrower than the left-right width of the intermediate transfer device 22. The left and right spiral blades 24 are provided in a region of the intermediate transfer device 22 that protrudes outward on both sides in the left-right direction from the ends on both sides in the left-right direction of the handling chamber 27. Therefore, the intermediate transport device 22 can gather the threshed products toward the center in the left-right direction and then smoothly put them into the rear handling chamber 27.

As shown in FIG. 3, the lower end position of the intermediate transfer device 22 is located higher than the lower end position of the first threshing processing unit 15. The second threshing processing unit 16 is provided in a state of being connected to the rear end portion of the intermediate transport device 22.

[Second threshing processing department]
The second threshing processing unit 16 will be described.
As shown in FIGS. 1 and 3, the second threshing processing unit 16 is provided in a backward tilting posture. The second threshing processing unit 16 is provided with a handling chamber 27, and the handling chamber 27 is provided with a second handling cylinder 28 that rotates around the front-rear axis Y. The second handling cylinder 28 is provided in a rear-up tilted posture, and the axis Y is also in a rear-up tilted posture.

The rearward tilt angle θ1 of the virtual line LN connecting the lower end position of the first threshing processing unit 15 and the lower end position of the intermediate transfer device 22 is set to be larger than the rearward tilt angle θ2 of the second threshing processing unit 16. There is. That is, it is configured so that the rearward tilting condition of the second threshing processing unit 16 is looser than the rearward rising condition from the first threshing processing unit 15 to the intermediate transport device 22.

As shown in FIGS. 4 to 7, the second handling cylinder 28 has a rotary support shaft 29 rotatably provided in a posture along the front-rear direction, and an outer periphery of the rotary support shaft 29 along the front-rear direction. A plurality of rod-shaped frame bodies 30 arranged in a vertical state and spaced apart from each other in the circumferential direction, and handling teeth 31 attached to the frame body 30 are provided. The frame body 30 is made of a round pipe steel material.

The rotation support shaft 29 in the second handling cylinder 28 is composed of one real thing from the front end portion to the rear end portion of the second handling cylinder 28, and is formed long in the front-rear direction. A self-aligning bearing is used as a bearing member that rotatably supports both front and rear portions of the rotary support shaft 29. Further, although not shown, the second handling cylinder 28 is rotationally driven by transmitting power to the rear side. When the handling cylinder is locked due to clogging of the processed material or the like, a force acts on the rear side of the rotary support shaft 29 in the twisting direction. Therefore, as shown in FIGS. 4 and 6, the reinforcing rib 32 is provided in a state of radially extending in a part of the outer peripheral portion of the rotary support shaft 29 on the rear end side.

The second handling cylinder 28 is rotationally driven in the clockwise direction (clockwise) in the front view with the rotation support shaft 29 as the center of rotation. The lower front part of the handling chamber 27 is formed with an opening that allows the threshed material to be put into the handling chamber 27. A second receiving net 33 is provided in the area below the second handling cylinder 28 in the periphery of the second handling cylinder 28.

As shown in FIG. 3, the handling chamber 27 includes a front support wall 34 and a rear support wall 35 that support the second handling cylinder 28, a top plate 36 provided above the second handling cylinder 28, and a second receiver. The sections are formed by a net 33 or the like. A plurality of dust feeding valves 37 arranged in the front-rear direction of the handling chamber 27 are provided inside the top plate 36. As shown in FIG. 12, the top plate 36 has a configuration that can be divided back and forth at a division portion provided in the central portion in the front-rear direction of the handling chamber 27. Normally, the first top plate 36A located on the front side and the second top plate 36B located on the rear side are bolt-connected at a split portion in the center of the front and rear. When removing it for maintenance or the like, the bolt connection can be released, the bolt can be divided into front and rear parts, and the bolt can be removed rearward.

A scraping portion 39 having a spiral blade 38 is provided at the front portion of the second handling cylinder 28. In the scraping portion 39, the spiral blade 38 is integrally fixed to the outer peripheral portion of the tapered drum 40. The front end portion of the drum 40 is connected to the rotary support shaft 29. The rear end portion of the drum 40 is connected to the rotation support shaft 29 via the front support member 41. The scraping portion 39 is configured to scrape the threshed material to be introduced backward by the feeding action of the spiral blade 38 as the rotation support shaft 29 rotates.

As shown in FIG. 3, below the scraping portion 39, a guide body 42 that receives the threshing processed material scraped by the scraping portion 39 and guides it backward without leaking downward is provided. There is. The guide body 42 is composed of a plate body bent in a substantially arc shape in a front view along the lower outer peripheral portion of the spiral blade 38. The guide body 42 is provided in a state of being connected to the rear portion of the bottom plate 26 of the intermediate transport device 22, and smoothly transports the threshed product transported rearward by the scraping member 25 to the rear without leaking downward. It is configured as follows.

A handling processing unit 43 is provided in a portion of the second handling cylinder 28 on the rear side of the scraping portion 39. The handling unit 43 includes a first handling unit 44 on the front side and a second handling processing unit 45 on the rear side, and the first handling processing unit 44 and the second handling processing unit 45 are toothed. The shapes are different from each other.

The configuration of the handling processing unit 43 will be described.
As shown in FIG. 4, the handling processing unit 43 includes a front support member 41 connected to a portion of the rotation support shaft 29 corresponding to the rear portion of the suction portion 39, and a rear end portion of the rotation support shaft 29. The rear support member 46 connected to the rear support member 46 and the three intermediate support members 47a, 47b, 47c connected to the front-rear intermediate portion of the rotary support shaft 29 at intervals in the axial core direction are provided.

The handling unit 43 is between the first handling unit 44 having six front frame bodies 30a located on the front side of the second intermediate support member 47b of the frame body 30 and the second intermediate of the frame body 30. It includes a second handling processing unit 45 having six rear frame bodies 30b located on the rear side of the support member 47b.

The front frame body 30a and the rear frame body 30b are a single real frame body having a front-rear length extending over the front support member 41 and the rear support member 46 in the front-rear direction at a position corresponding to the second intermediate support member 47b. It is divided into two parts. The front frame body 30a and the rear frame body 30b are set to have the same length.

As shown in FIG. 5, the six front frame bodies 30a are arranged at equal intervals in the circumferential direction of the second handling cylinder 28. A plate-shaped connecting member 48 is connected to the front end of each front frame body 30a by welding, and the connecting member 48 is connected to the front support member 41 by bolts Bo. Similar to the front end portion, the rear end portion of the front frame body 30a is connected to the plate-shaped connecting member 48 by welding, and the connecting member 48 is connected to the second intermediate support member 47b by bolts Bo. ..

As shown in FIG. 6, the six rear frame bodies 30b are arranged at equal intervals in the circumferential direction of the second handling cylinder 28. A plate-shaped connecting member 49 similar to the front frame body 30a is connected to the front end of each rear frame body 30b by welding, and the connecting member 49 is connected to the second intermediate support member 47b by bolts Bo. ing. The rear end portion of the rear frame body 30b is connected to the rear support member 46 via a plate-shaped connecting member 49 by bolts Bo, similarly to the front end portion.

As described above, the front frame body 30a and the rear frame body 30b have the same length and the same mounting structure. Therefore, the front frame body 30a can be attached to the second handling processing unit 45, and the rear frame body 30b can also be attached to the first handling processing unit 44. That is, it is possible to release the connection of the bolt Bo and change the front-rear position to replace it.

The radial distance Q1 between the front frame body 30a and the rotation support shaft 29 and the radial distance Q2 between the rear frame body 30b and the rotation support shaft 29 are different. To add an explanation, as shown in FIG. 7, the front frame body 30a is arranged in a state of being located on the outer side in the radial direction with respect to the rear frame body 30b. Therefore, the radial distance Q1 between the front frame body 30a and the rotation support shaft 29 is larger than the radial distance Q2 between the rear frame body 30b and the rotation support shaft 29. It is configured.

Both the front frame body 30a and the rear frame body 30b are distributed and arranged at equal intervals in the circumferential direction, but the front frame body 30a and the rear frame body 30b are arranged in a state in which the phases are different in the circumferential direction. ing. Specifically, the rear frame bodies 30b are arranged with their phases shifted in the circumferential direction so that the rear frame bodies 30b are located at substantially intermediate positions in the circumferential direction between the two adjacent front frame bodies 30a.

By arranging in this way, the connecting member 48 on the front side frame body 30a side and the connecting member 49 on the rear side frame body 30b side can be displaced in the circumferential direction, and the connection with the second intermediate support member 47b can be performed. The work can be done easily.

The first handling processing unit 44 is provided with a first handling tooth 50 that has irregularities on the surface and that has an uneven shape on the surface to handle the crop. The first handling tooth 50 also has the same configuration as the handling tooth 19 provided in the first handling cylinder 17. That is, as shown in FIG. 9, a large number of irregularities 51 are formed on the surface, and the irregularities on the surface are formed by the rust-handling teeth that act on the crop.

As shown in FIGS. 5 and 8, the portion 50a on the upper side in the rotation direction of the first tooth 50 is formed with a smooth outer peripheral surface, and the second receiving net along the radial direction toward the lower side in the rotation direction. It is provided in an inclined shape so that the distance from the 33 is narrowed. The uneven portion 51 is formed on the outer peripheral surface of the portion 50b on the lower side in the rotation direction of the first handling tooth 50, and the distance between the first handling tooth 50 and the second receiving net 33 along the radial direction is substantially equal over the entire width in the circumferential direction. It is the same.

The first handling tooth 50 is configured in a rod shape extending along the longitudinal direction of the front frame body 30a. The first handling tooth 50 is supported by a support base 52 attached to the front frame body 30a. A plurality of support bases 52 (five in the example shown in FIG. 4) are attached to the front frame body 30a at intervals along the axial core direction of the second handling cylinder 28.

As shown in FIG. 8, the support base 52 is composed of a plate body bent in a substantially U shape in the direction of the axis of rotation, and both end portions are connected to the outer peripheral surface of the front frame body 30a by welding. ing. Further, the support base 52 has an upper support portion 52a having one end welded to the outer peripheral surface of the front frame body 30a and supporting the upper side portion 50a in the rotation direction of the first handling tooth 50, and an upper side support portion 52a. It is connected to the lower support portion 52b that is connected to the portion 52a and supports the lower side portion 50b in the rotation direction of the first handling tooth 50, and is connected to the lower side support portion 52b, and the other end is on the outer peripheral surface of the front frame body 30a. It is provided with a welded extension portion 52c. The upper support portion 52a is provided in a shape along the upper side portion 50a in the rotation direction of the first handling tooth 50, and the lower hand side support portion 52b is provided in a shape along the lower side portion 50b in the rotation direction of the first handling tooth 50. Has been done. A gap S is formed between the lower support portion 52b and the front frame body 30a.

The first handling tooth 50 is detachably supported with respect to the support base 52. As shown in FIGS. 8 and 9, a bolt hole 53 is formed in a portion of the portion 50b on the lower side in the rotation direction of the first handling tooth 50 corresponding to the support base 52. A welding nut 54 is provided on the inner surface of the portion of the lower support portion 52b corresponding to the bolt hole 53. The bolt 55 and the nut 54 mounted from the outer peripheral side fasten and fix the lower side portion 50b of the first handling tooth 50 in the rotation direction and the lower side support portion 52b of the support base 52. A recessed portion 56 into which the bolt head is inserted is formed on the outer peripheral side of the portion 50b on the lower side in the rotation direction of the first handling tooth 50. This prevents the head of the bolt 55 from protruding outward in the radial direction.

The second handling processing unit 45 is provided with a second handling tooth 57 extending in a rod shape toward the outside in the radial direction. As shown in FIG. 10, the second handling tooth 57 is formed of a plate having a substantially U-shaped cross section, and is provided in a vertically long shape along the radial direction. The second handling tooth 57 is supported by being connected to a bracket 58 fixed to the outer peripheral portion of the rear frame body 30b by fastening bolts 59. The bracket 58 is composed of a plate body having a substantially U-shaped cross section, and side surface portions 58a on both sides are welded to the outer peripheral portion of the rear frame body 30b. The brackets 58 are provided at appropriate intervals in the longitudinal direction of the rear frame body 30b. The intermediate portion 58b between the side surface portions 58a on both sides of the bracket 58 is formed in a planar shape, and is configured in an inclined posture in which the rear portion is located on the lower side in the rotational direction.

The second handling tooth 57 is attached to the intermediate portion 58b of the bracket 58 from the outside and fixed to the bracket 58 by fastening the bolt 59. The intermediate portion 57a of the second handling tooth 57 is formed in a planar shape, and the outer surface of the intermediate portion 57a constitutes a handling surface 57b that acts on the crop. The fixing portion of the second handling tooth 57 to the bracket 58, specifically, the insertion hole 60 through which the bolt 59 is inserted is formed at two locations at equal distances from the center in the longitudinal direction.

With this configuration, when the radial outer end of the second handle 57 is worn due to the threshing process for a long period of time, the direction of the second handle 57 is reversed in the longitudinal direction. It can be bolted and fixed in the other insertion hole 60.

As shown in FIG. 6, the second handling tooth 57 is located on the lower side in the rotation direction of the second handling cylinder 28 as it is located on the outer side in the radial direction in the axial view of the rotation support shaft 29. It is tilted. Further, the intermediate portion 58b of the bracket 58 to which the second handling tooth 57 is attached is configured in an inclined posture which is located on the lower side in the rotation direction toward the rear side.

Therefore, the handling surface 57b of the second handling tooth 57 is configured in an inclined posture that is located on the lower side in the rotation direction toward the rear side, and is radially outward in the axial direction of the rotation support shaft 29. The more it is positioned, the more it is inclined so as to be located on the lower side in the rotation direction of the second handling cylinder 28.

As shown in FIG. 7, when viewed in the axial direction of the rotary support shaft 29, the outer end locus of the second handling cylinder 28 in the first handling processing unit 44, that is, the radial outer end portion of the first handling tooth 50. The movement locus and the outer end locus of the second handling cylinder 28 in the second handling processing unit 45, that is, the moving locus of the radial outer end portion of the second handling tooth 57 are configured to be at the same position. ..

The second handling cylinder 28 is configured in a cage shape in which an internal space Z communicating with the outer peripheral space is formed inside between the front frame bodies 30a and between the rear frame bodies 30b. Therefore, the second handling cylinder 28 can prevent the drive load by the second handling cylinder 28 from becoming excessive by allowing the processed material to enter the internal space Z in the threshing process.

As shown in FIG. 1, below the first threshing processing unit 15 and the second threshing processing unit 16, the threshing processed product leaked from the first receiving net 21 and the threshing processed product leaked from the second receiving net 33. Is provided with a sorting unit 61 for sorting grains, branches with branches (second product), other stem culm dust, dust, etc. while rocking and transferring. The sorting unit 61 is provided with a sorting fan 62 for supplying sorting wind, a grain collecting unit 63 for collecting grains, a second product collecting unit 64 for collecting the second product and returning it to the handling room, and the like. ing.

The sorting unit 61 is provided with a Glenpan 65 extending from a region below the first threshing processing unit 15 to a region below the second threshing processing unit 16. The rear end of the Glenpan 65 extends to a position below the front end of the second net 33.

The threshed product leaked from the first receiving net 21 of the first threshing processing unit 15 can be directly transferred to the area below the second threshing processing unit 16 by the Glenpan 65. As a result, the sorting process can be efficiently performed together with the threshed product leaked from the second receiving net 33 of the second threshing processing unit 16.

[Dust valve]
Next, the dust feed valve 37 will be described.
As shown in FIG. 12, the front end dust feed valve 37a located on the frontmost side of the plurality of dust feed valves 37 is provided above the scraping portion 39 in the second handling cylinder 28. The front end dust feed valve 37a has a fixed feed angle. Therefore, the front end dust feed valve 37a corresponds to the fixed dust feed valve.

Of the plurality of dust feed valves 37 attached to the top plate 36, the plurality of dust feed valves 37 other than the front end dust feed valve 37a are attached so that the feed angle can be changed. Then, among the plurality of dust feed valves 37, a plurality of front side dust feed valves 37b located on the front side (four in the example shown in FIG. 12) and a plurality of dust feed valves 37 located on the rear side (the example shown in FIG. 12 are shown in FIG. 12). The rear side dust valve 37c (4) is configured so that the feed angle can be changed at the same time for each of them.

A plurality of front side dust sending valves 37b are provided at positions corresponding to the first handling section 44 of the top plate 36, and a plurality of positions corresponding to the second handling section 45 of the top plate 36. A rear side dust valve 37c is provided. That is, a plurality of front side dust feed valves 37b are provided on the first top plate 36A, and a plurality of rear side dust feed valves 37c are provided on the second top plate 36B. Then, among the plurality of front side dust feed valves 37b, the front side dust feed valve 37b located at the rear end portion can be switched to a state in which the front side dust feed valve 37b enters the region below the second top plate 36B.

As shown in FIGS. 12 and 13, the plurality of front side dust feed valves 37b and the plurality of rear side dust feed valves 37c are located on the inner surface side of the top plate 36, respectively, via the swing fulcrum shaft 66. It is supported so that it can swing. The swing fulcrum shaft 66 is provided on the left side of the front side dust feed valve 37b and the rear side dust feed valve 37c. An interlocking link 67 is connected to the free end side on the right side of each of the plurality of front side dust valves 37b via a connecting pin 68. That is, the plurality of front side dust feed valves 37b are interlocked and connected by the interlocking link 67 so as to interlock and swing in the same swing direction.

Further, an interlocking link 69 is connected to the free end side on the right side of each of the plurality of rear side dust feed valves 37c via a connecting pin 70. That is, the plurality of rear side dust valves 37c are interlocked and connected by the interlocking link 69 so as to interlock and swing in the same swing direction.

A first angle adjusting mechanism 71 capable of simultaneously changing the feed angles of a plurality of front side dust feed valves 37b, and a second angle adjusting mechanism 72 capable of simultaneously changing the feed angles of a plurality of rear side dust feed valves 37c. , Is provided.

As shown in FIG. 13, an inclined surface portion 73 having a downward inclined posture, which is located on the lower side toward the outer side, is formed on the left end portion of the top plate 36. The first angle adjusting mechanism 71 and the second angle adjusting mechanism 72 are arranged in the upper space K having a triangular cross section formed directly above the inclined surface portion 73.

Since the first angle adjusting mechanism 71 and the second angle adjusting mechanism 72 have the same configuration, the configuration of the first angle adjusting mechanism 71 will be described below, and the description of the second angle adjusting mechanism 72 will be omitted.

The first angle adjusting mechanism 71 is provided with an electric motor 74 as a drive motor and a link mechanism 75 for connecting the electric motor 74 and the front side dust valve 37b. The electric motor 74 is supported by a support base 76 fixed to the top plate 36.

The link mechanism 75 is adjusted with an adjustment lever 77 extending laterally outward from the swing fulcrum shaft 66 of the front side dust feed valve 37b, which is one of the plurality of front side dust feed valves 37b. The lever 77 is provided with an operation mechanism 78 that swings back and forth by driving an electric motor 74. The operation mechanism 78 includes a screw shaft 79 that is rotationally driven by an electric motor 74, a female screw member 80 that moves in the front-rear direction with the rotation of the screw shaft 79, and is provided on the female screw member 80 upward. The operation pin 81 is engaged and linked through a long hole-shaped insertion hole 82 formed in the adjustment lever 77.

The screw shaft 79 is provided so as to extend in the front-rear direction of the machine body, and is rotatably supported by the front-rear support brackets 83 fixed to the support base 76. The electric motor 74 is supported by a support bracket 83 on the front side.

When the screw shaft 79 is rotated by the drive of the electric motor 74, the female screw member 80 moves back and forth accordingly, and the adjustment lever 77 swings back and forth. Then, the plurality of front side dust feed valves 37b are oscillated by the interlocking link 67. That is, the feed angles of the plurality of front side dust feed valves 37b can be adjusted.

As shown in FIG. 7, the radial distance Q3 between the movement locus of the radial outer end of the second handling cylinder 28 and the radial inner end of the dust valve 37 is the diameter of the second handling cylinder 28. It is larger than the radial distance Q4 between the movement locus at the outer end of the direction and the inner end in the radial direction of the second receiving net 33. In this way, the drive load of the second handling cylinder 28 can be reduced as much as possible while performing the handling processing well.

[Another Embodiment]
(1) In the above embodiment, the first handling tooth (rasp handling tooth) 50 has a rod shape extending along the longitudinal direction of the frame body 30, but instead of this configuration, the first handling tooth 50 has a configuration. , A plurality of short small handling teeth may be provided at intervals along the longitudinal direction of the frame body 30.

(2) In the above embodiment, a plurality of support bases 52 are attached to the frame body 30 at intervals along the axis direction of the second handling cylinder 28, but instead of this configuration, The support 52 may be configured to have a rod shape extending along the longitudinal direction of the frame body 30.

(3) In the above embodiment, the first handling tooth (rasp handling tooth) 50 is detachably supported by the support base 52, but instead of this configuration, the first handling tooth 50 is a support base. It may be configured to be attached to the 52 in a fixed state, or the first handling tooth 50 may be supported by the frame body 30.

(4) In the above embodiment, the distance between the rotation direction upper side portion 50a of the first handling tooth (rasp handling tooth) 50 and the receiving net 33 along the radial direction is larger than that of the rotation direction lower side portion 50b. Although it is configured to be widely formed, instead of this configuration, the upper side portion 50a in the rotation direction and the lower portion 50b in the rotation direction of the first handling tooth (rasp handling tooth) 50 are connected to the receiving net 33 along the radial direction. It may be configured so that the intervals between them are the same.

(5) In the above embodiment, the first handling tooth (rasp handling tooth) 50 is provided with a rotation direction upper side portion 50a having a smooth outer peripheral surface, but such a rotation direction upper side portion 50a is provided. It may be a configuration that does not include.

(6) In the above embodiment, the first handling tooth (rasp handling tooth) 50 is fixed to the support base 52 by the bolt 55 and the nut 54, but instead of this configuration, the first handling tooth (rasp handling) is used. The support configuration can be variously changed, such as a configuration in which the tooth) 50 is fixed by rivets, a configuration in which the teeth are fixed by welding, and the like.

(7) In the above embodiment, the first handling tooth (rasp handling tooth) 50 is provided only in the first handling processing unit 44, which is the first half portion of the second handling body 28, but instead of this configuration. Therefore, the first handling tooth (rasp handling tooth) 50 may be provided over the entire range including the first handling processing unit 44 and the second handling processing unit 45 in the second handling cylinder 28.

The present invention can be applied to a threshing device for threshing harvested crops.

27 Handling room 28 Second handling body (Handling body)
29 Rotating support shaft 30a Frame body 33 Second receiving net (receiving net)
50 First tooth (Rasp tooth)
50a Rotational upper side location 50b Rotational direction lower side location 51 Concavo-convex 52 Support stand 52a Upper side support part 52b Lower side support part 54 Nut 55 Bolt

Claims (10)

A handling chamber and a handling cylinder provided in the handling chamber in a rotatable state and for threshing the crops put into the front part of the handling chamber are provided.
A rotation support shaft rotatably provided on the handling cylinder in a posture along the front-rear direction of the handling chamber, and a state along the front-rear direction and an interval in the circumferential direction on the outer periphery of the rotation support shaft. A plurality of rod-shaped frame bodies lined up in an open state and handling teeth fixed to the frame body are provided.
The handling tooth is a threshing device composed of a rasp-handling tooth that has irregularities on the surface and acts on crops due to the uneven shape of the surface. The threshing device according to claim 1, wherein the rasp-handling teeth are supported by a support base attached to the frame body. The threshing device according to claim 2, wherein a plurality of the supports are attached to the frame body at intervals along the axial core direction of the handling cylinder. The threshing device according to claim 2 or 3, wherein the rasp teeth are detachably supported with respect to the support base. The threshing device according to any one of claims 1 to 4, wherein the rasp-handling tooth has a rod shape extending along the longitudinal direction of the frame body. A receiving net is provided along the outer peripheral portion of the handling cylinder, and a receiving net is provided.
13. The threshing device according to any one item. The portion on the upper side in the rotation direction of the ratp handling tooth is formed with a smooth outer peripheral surface, and is inclined so that the distance between the tooth and the receiving net along the radial direction becomes narrower toward the lower side in the rotation direction. Provided,
According to claim 6, the portion of the tooth on the lower side in the rotation direction of the rasp handling tooth has irregularities formed on the outer peripheral surface, and the distance between the tooth and the receiving net along the radial direction over the entire width in the circumferential direction is substantially the same. The described threshing device. The rasp teeth are attached to a support base supported by the frame body, and the teeth are attached to the support base.
The support base includes an upper support portion that supports a portion on the upper side in the rotation direction of the rust handle tooth, and a lower support portion that supports a portion on the lower side in the rotation direction of the rust handle tooth.
The upper support portion is provided in a shape along the upper side portion in the rotation direction of the rasps handling tooth.
The threshing device according to any one of claims 1 to 7, wherein the lower support portion is provided in a shape along a portion on the lower side in the rotation direction of the rasps handling tooth. The support base is attached in a state where a gap is formed between the lower support portion and the frame body.
The lower side portion in the rotation direction of the rasp handling tooth and the lower hand side support portion are fastened and fixed by a bolt mounted from above and a nut provided in a gap between the lower hand side support portion and the frame body. The threshing device according to claim 8. The threshing device according to any one of claims 1 to 9, wherein the handling cylinder is provided with another handling processing unit behind the handling processing unit having the rust handling teeth.

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