JP4041231B2 - Processing cylinder for combine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a combine processing cylinder in which a spiral transfer spiral is attached to a rotating body such as a handling cylinder .
[0002]
[Prior art]
In a conventional threshing device provided in a combine, binder, etc., a first handling cylinder for grain threshing and a second handling cylinder (process) that inherits the grain that has been threshed by the first handling cylinder and performs the threshing process again. The second handling cylinder, which is a rotating body that rotates for threshing about a support shaft provided substantially at the center, is provided on the transfer start end side of the second handling cylinder. There was one in which a spiral transfer helix was attached to the barrel side to guide the grain to be processed.
[0003]
[Problems to be solved by the invention]
However, since the transfer spiral is spiral as described above, if it is deformed, it becomes difficult to attach it to the second barrel, so that normal heat treatment (thermosetting) is not performed to prevent thermal deformation. For this reason, the hardness of the said transfer helix was comparatively low, and there existed a fault that the start end side of a transfer helix was easily worn out with the sand at the time of threshing.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problems, the processing cylinder for a combine according to the present invention has a rotating body 26 that rotates around the axis centered at the rear end side of the processing cylinder 12 for threshing the cereal, with the front end approaching and offset. In the processing cylinder for the combine, in which the spiral transfer helix 29 is attached to the outer periphery of the rotating body 26 and the processed material from the handling cylinder 12 is inherited and transferred to the rear in the axial direction, the transfer spiral 29 has a transfer start end side. The first feature is that the wear-resistant member 31 is detachably attached.
[0005]
The second feature is that the wear-resistant member 31 protrudes from the outer periphery of the transfer start end of the rotating body 26.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front perspective view of a combine equipped with a threshing device adopting the present invention. The combine is provided with a pre-processing unit 3 for harvesting cereals in front of a machine body 1 supported by a traveling device 2. In addition, a threshing device 4 is arranged behind the pretreatment unit 3. Further, on the side (right side) of the threshing device 4, a driver's seat 6 and a Glen tank 7 for temporarily storing the threshed grain are provided.
[0007]
2 to 4 are a left side perspective view, a plan perspective view, and a front perspective view of the threshing device 4 to which the present invention is applied. The threshing device 4 includes the threshing unit 8 for threshing the harvested cereal meal and the threshing portion. The threshing unit 8 inherits the harvested cereal harvested by the preprocessing unit 3 and feeds it along the handling room, A handling cylinder 12 and the like for threshing the conveyed cereal meal are provided.
[0008]
In addition, a processing cylinder (second handling cylinder) 13 that is offset from the handling cylinder 12 in a plan view and threshed after the threshing process by the handling cylinder 12 in a plan view is rotatable behind the handling cylinder 12. Thus, the threshing operation is performed with relatively high efficiency by performing the threshing process again with the processing cylinder 13 after threshing with the handling cylinder 12 as in the prior art.
[0009]
At this time, in front of the handling cylinder 12 in the threshing device 4, an entrance portion 14 having an opening for inserting a harvested cereal culm is formed, and the upper side is covered with a fixed cover 16 made of metal or the like. The lower side is covered with a cover 17 formed of synthetic resin (tarporin). Since the cover 17 is made of tarpaulin as described above, the cover 17 is swingable, and swings in the front-rear direction when the harvested culm is inserted, thereby allowing the cereal to be conveyed to the handling cylinder 12.
[0010]
On the other hand, the cover 17 is attached to a cover (pulley cover) 18 of a handling cylinder transmission system formed in the fixed cover 16. The inner side is bent in an L shape, and the cover 17 is also bent and attached in an L shape on the inner side of the machine body.
[0011]
That is, as shown in FIG. 5, the cover 17 is used for spot welding (projection welding) from the outside of the press plate 19 to the seat portion with the cover 17 held between the plate-like press plate 19 and the pulley cover 18 on the front side. A bolt-shaped projection button 20 with projections (projections) formed therein is inserted, and the projection buttons 20 are inserted from the outside of the cover 17 on the sides bent in an L shape. In FIG.
[0012]
At this time, in the fixed portion on the side of the cover 17, the projection of the seat portion of the projection button 20 bites into the cover 17 and reaches the pulley cover 18, so that the projection button 20 and the nut 21 and the cover 17 are fixed stably. Since a member corresponding to the presser plate 19 is not required on the side, the number of parts can be reduced.
[0013]
As described above, since the tip side (the inner side of the machine body) of the cereal cocoon to be conveyed is bent in an L shape, the cover 17 is between the cover 17 and the cover (side cover) on the side of the threshing device 4 in the machine body 1. It is prevented from jumping out. Note that the side cover side end (L-shaped bent end) of the cover 17 is separated from the side cover, and the cover 17 is not hindered from swinging in the front-rear direction, and the harvested cereal can easily be conveyed to the handling cylinder 12 side. Is done.
[0014]
On the other hand, as shown in FIG. 6, the processing cylinder 13 has a structure in which protrusions 25 for threshing are provided on the peripheral surface of a drum-like rotating body 26 as in the prior art, and front and rear ends of the rotating body (drum) 26. A plate-like end plate 27 having a diameter larger than that of the drum 26 is attached to the end plate 27. The processing cylinder 13 (drum 26) is rotatably supported around a rotating shaft 28 provided at the center of the drum 26 as a shaft center (support shaft). However, as shown in FIGS. The front end side of the cylinder 13 is close to the rear end side of the handling cylinder 12, and the front end side of the processing cylinder 13 inherits the processed material (those to be rethreshed by the processing cylinder 13) after the threshing process by the handling cylinder 12. On the side.
[0015]
At the front end (transfer start end) side of the processing cylinder 13, a spiral transfer helix 29 extending toward the lower side of the processing material conveyance path (rear side of the processing cylinder 13) is welded to the peripheral surface of the drum 26. The processed product after being threshed by the handling cylinder 12 is guided by the transfer helix 29 and guided around the peripheral surface of the processing cylinder 13 toward the lower side of the conveyance path. It is configured to be threshed.
[0016]
At this time, a plate-like wear-resistant member (plate) 31 is detachably fixed by a bolt 32 or the like on the transfer start end (front end) side of the transfer spiral 29, and the plate 31 is attached to the transfer start end side of the plate 31. The end portion 31 a of the processing cylinder 13 protrudes from the outer periphery of the front end plate 27 of the processing cylinder 13. The plate 31 is increased in hardness by heat treatment (quenching), and wear resistance is maintained.
[0017]
As a result, the processed material handed over to the processing cylinder 13 is guided to the transfer helix 29 and transferred to the processing cylinder 13 side (rear) as described above, but the processed material contacts the plate 31 at the transfer start end of the transfer helix 29. The contact with the starting end portion of the transfer spiral 29 (main body) is reduced.
[0018]
For this reason, the plate 31 receives energy at the time of contact with the starting end portion of the transfer helix 29 due to sand or the like contained in the processed material. However, as described above, the plate 31 is heat-treated and the wear resistance is improved. Since it is a member, it does not easily wear, and eventually wear of the start end portion of the transfer helix 29 is prevented, and the transfer performance of the transfer helix 29 is maintained. At this time, since the transfer start end side of the plate 31 protrudes in the outer peripheral direction of the front end plate 27 of the processing cylinder 13, wrapping around the processing cylinder 13 side (the drum 26 and the like) such as straw in the processing object is prevented. .
[0019]
For this reason, it is not necessary to harden the transfer helix 29 more than necessary by heat treatment or the like, and it becomes easy to process and manufacture the transfer helix 29, and the plate 31 can be replaced when the plate 31 is worn by the processed material. As described above, since the plate 31 is flat, there is little influence on the mounting to the transfer helix 29 side due to thermal deformation, whereby heat treatment (high hardness) can be easily performed, and manufacturing and processing are easy. In addition, it can be easily attached to and detached from the transfer helix 29, and the replacement work is facilitated.
[0020]
【The invention's effect】
According to the structure of the present invention configured as described above, for example, a high-hardness wear-resistant member subjected to heat treatment is attached to the start end side of the transfer helix, so that the wear-resistant member and the processed material are first formed. The contact prevents wear of the transfer helix, stable operation of the processed material, etc., and it is not necessary to increase the hardness of the transfer helix itself, making it easy to process the transfer helix. There is an effect.
[0021]
Further, when the wear-resistant member is worn, only the wear-resistant member needs to be replaced, and it is not necessary to replace the transfer spiral. Therefore, the replacement work is easy and the cost is reduced. Furthermore, since the start end portion of the transfer helix protrudes from the outer periphery of the start end portion of the rotating body, wrapping around the rotating body such as waste contained in the processed material is prevented.
[Brief description of the drawings]
FIG. 1 is a front perspective view of a combine.
FIG. 2 is a side perspective view of a threshing device.
FIG. 3 is a plan perspective view of a threshing device.
FIG. 4 is a front perspective view of the threshing device.
FIG. 5 is a partial plan view showing a cover attached state.
FIG. 6 is a plan view of a processing cylinder.
[Explanation of symbols]
26 Drum (Rotating body)
29 Transfer spiral 31 Plate (Abrasion resistant member)

Claims (2)

On the rear end side of the barrel (12) for threshing the cereals, a rotating body (26) that rotates around the axis center with the front end approaching and offset is supported, and on the outer periphery of the rotating body (26) . In a processing cylinder for a combine equipped with a spiral transfer helix (29) that inherits the processed material from the handling cylinder (12) and is conveyed rearward in the axial direction, wear resistance is provided on the conveyance start end side of the transfer helix (29). A processing cylinder for a combine in which the member (31) is detachably attached. The processing cylinder for a combine according to claim 1, wherein the wear-resistant member (31) protrudes from the outer periphery of the transfer start end portion of the rotating body (26).

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