JP5199656B2 - Disc type waste wall cutter - Google Patents

Description

  The present invention relates to a disc-type waste wall cutter that is mounted on the rear part of a threshing device mounted on a combine.

The disc-type waste wall cutter is configured by opposingly arranging a rotary receiving blade equipped with a disk-shaped receiving blade in parallel with a receiving blade shaft and a rotating cutting blade equipped with a disk-shaped cutting blade in parallel. In order to prevent the winding of scraps on the rotary receiving blade, a scraper is fitted around the receiving blade shaft so as to be relatively rotatable, and a rod horizontally mounted on the cutter side plate in the cutter case is passed through each scraper. There is known one configured to prevent the scraper from co-rotating with the receiving blade shaft (for example, see Patent Document 1).
JP-A-10-313673

  According to the above conventional structure, when the rotary blade is detached from the cutter case for inspection and maintenance, etc., the rod that supports the scraper needs to be detached from the cutter case. It was.

  The present invention has been made paying attention to such points, and has as its main purpose to make it possible to easily attach and detach the rotary receiving blade from the cutter case.

According to a first aspect of the present invention, a rotary receiving blade having a disk-shaped receiving blade mounted in parallel on a receiving blade shaft and a rotating cutting blade having a disk-shaped cutting blade mounted in parallel on a cutting shaft are opposed to a cutter case. In the disc-type waste wall cutter that is supported and loosely fitted with a scraper on the receiving blade shaft so as to be relatively rotatable,
The end portion of the scraper to the fixed portion provided in the cutter casing, engages in disengageably state along a direction intersecting the receiving blade shaft, the co-rotation of the receiving blade shaft of the scraper Configured to block ,
As the fixed portion, provided with an engagement hole formed in a case wall that is close to and opposed to the rotary receiving blade,
The scraper is inserted and engaged with the end portion of the scraper in the engagement hole so as to prevent the scraper from rotating together with the receiving blade shaft .

According to the above configuration, when the rotary receiving blade is moved from the cutting position, the scraper that moves integrally with the rotary receiving blade is separated from the fixing portion of the cutter case and is disengaged. When the rotary receiving blade removed from the cutter case is moved to the cutting position, the scraper is moved with the rotary receiving blade in a predetermined posture so that the end of the scraper can be engaged with the fixed portion of the cutter case. it can.
Therefore, according to the first invention, when detaching the rotary receiving blade from the cutter case for inspection and maintenance, etc., there is no need for a special connection release operation or connection operation for releasing the stopper of the scraper. It became possible to easily attach and detach the rotary blade from the cutter case .

Further, according to the above configuration, the case wall, which is an existing member, can be used as a fixing portion, and a special member for preventing the scraper from rotating together is unnecessary, so that the scraper can be prevented from rotating together. This is effective for simplifying the structure and reducing the number of parts.

Furthermore, according to the above configuration, the engagement holes can be simultaneously punched during the case wall punching press process, which is effective in reducing the part processing cost .

  FIG. 1 shows a longitudinal side view of a threshing apparatus 1 mounted on a self-removing combine. This threshing device 1 receives a harvested cereal rice cake in a lying down position that has been conveyed from a left reaping portion outside the figure with a feed chain 2 and inserts its head into a handling chamber 3 from the left in the figure to the right. Threshing by the handling cylinder 4 that is pivotally supported in the handling chamber 3 so as to be driven and rotated, and the threshing processed material is sorted by the sorting unit 5 below the handling chamber, and the grain is recovered first. 6 and then taken out of the machine, the second item is collected in the second collection unit 7, and then returned to the front part of the sorting unit 5 to perform another sorting process. The waste straw after the threshing process carried out from is delivered to the waste straw conveying device 8 and supplied to the waste straw cutter 9.

  As shown in FIGS. 6 and 7, a support shaft 30 of the barrel 4 is penetrated and supported on the front side plate 1 a of the threshing device 1, and a belt transmission mechanism 31 that transmits rotational power to the support shaft 30 is provided on the front side plate. A front cover 32 is provided in front of 1 a and covers the belt transmission mechanism 31. The front cover 32 is supported so as to swing up and down around the upper fulcrum x, and the belt transmission mechanism 31 can be easily inspected and maintained by swinging up and opening the front cover 32.

  The waste wall cutter 9 supports the rotary receiving blades 11 and the rotary cutting blades 12 in the horizontal direction with a predetermined interval across the left and right case side walls 10a of the cutter case 10 opened up and down, and inwardly facing each other. A disc-type drain wall cutter configured to be driven to rotate is used, and a guide cover 13 for switching the drain wall flow path is provided at the upper rear portion of the cutter case 10 so as to swing up and down around the rear fulcrum a. Has been.

  As shown in FIG. 3, by holding the guide cover 13 in an upright swinging posture and opening the cutter inlet C, the waste straw discharged and supplied from the waste straw transporting device 8 can be rotated. 11 and the rotary cutting blade 12 can be supplied in a sideways posture and shredded, and as shown in FIG. 1, the cutter cover C is held by holding the guide cover 13 in a release posture that is tilted forward. By closing, the waste straw can flow backward along the upper surface of the guide cover 13 and can be discharged as a long straw.

  The rotary receiving blade 11 is horizontally supported across the left and right case side walls 10a, and the receiving blade shaft 14 is a hexagonal shaft that is driven backward at a low speed. In addition to being mounted in parallel with a pitch, a gear-shaped scoring plate 16 is provided at a small interval on one side in the axial direction of each receiving blade 15. The rotary cutting blade 12 has a disc-shaped cutting blade 18 with a predetermined shredding pitch on a cutting shaft 17 formed of a hexagonal shaft that is horizontally supported on the case side wall 10a behind the receiving blade shaft 14 and is driven forward at high speed. The rotary receiving blade 11 and the rotary cutting blade 12 have a predetermined axis so that each cutting blade 18 enters between each receiving blade 15 and the scoring plate 16 in the rotary receiving blade 11. Oppositely arranged in parallel with a distance.

  A scraper 20 is externally fitted between the receiving blades 15 and the scoring plate 16 of the rotating receiving blade 11 so as to prevent the waste scraps from being wound around the receiving blade shaft 14. The scraper 20 is formed of a resin thick plate material, and the front end portion formed in a tapered shape is through-engaged from the rear in an engagement hole 21 formed in the front case wall 10b of the cutter case 10, The scraper 20 is prevented from rotating together with the receiving blade shaft 14 by the engagement between the case wall 10 b as the fixing portion P in the cutter case 10 and the scraper 20.

The disc type waste wall cutter 9 according to the present invention is configured as described above. When the rotary blade 11 is removed from the cutter case 10 for inspection and maintenance, etc., the blade shaft 14 is supported on the case side wall 10a. The released rotating blades 11 are once moved rearward together with the scrapers 20 to disengage the front end portions of the scrapers 20 from the engaging holes 21 of the case wall 10b, and then the rotating blades 11 are taken out of the cutter case 10.

  When the removed rotating blade 11 is attached to the cutter case 10, the rotating blade 11 inserted between the left and right case side walls 10a is once moved forward, and the front end of each scraper 20 is moved to the case wall 10b. After inserting into the engagement hole 21, the receiving blade shaft 14 is positioned and pivotally supported with respect to the case side wall 10a.

[Other Examples]
(1) As shown in FIG. 8, a slit 22 opening forward is formed at the front end of the scraper 20, and the tongue piece 23 (corresponding to the “engagement portion” according to the present invention) is directed rearward from the case wall 10b. It is also possible to make a structure for preventing the scraper 20 from rotating together by engaging the slit 22 with the tongue 23 as the fixing portion P provided on the inner surface of the cutter case 10 from the rear.

  (2) As shown in FIG. 9, a concave portion 24 opened forward is formed at the front end portion of the scraper 20, and the protrusion 25 (corresponding to the “engagement portion” according to the present invention) is directed rearward from the case wall 10b. It is also possible to provide a structure for preventing the scraper 20 from co-rotating by bulging and engaging the concave portion 24 with a projection 25 as a fixing portion P provided on the inner surface of the cutter case 10 from the rear.

  (3) As shown in FIG. 10, a recess 24 that opens forward is formed at the front end of the scraper 20, and support rods 26 are installed over the left and right case side walls 10 a of the cutter case 10. The concave portion 24 can be engaged with the support rod 26 as the fixing portion P provided in the rear from the rear so that the scraper 20 can be prevented from rotating together.

  (4) As shown in FIG. 11, the front end edge of the scraper 20 is abutted and engaged with the inner surface of the case wall 10b as the fixing portion P provided in the cutter case 10 to provide a structure for preventing the scraper 20 from rotating together. You can also.

  (5) In the specification in which the rotary receiving blade 11 is arranged behind the rotary cutting blade 12, the scraper 20 provided with a fixing portion P on the case wall on the rear side of the cutter case 10 and loosely fitted to the receiving blade shaft 14. What is necessary is just to comprise so that a rear end part may be engaged with the fixing | fixed part P, and the co-rotation with the receiving blade axis | shaft 14 of the scraper 20 may be prevented.

  (6) As shown in FIGS. 12 and 13, the front cover 32 provided at the front part of the threshing device 1 is configured to be swingable and open forward around the vertical fulcrum y on the grain tip side. You can also.

Longitudinal side view of threshing device Top view of waste wall cutter Vertical side view of waste wall cutter Longitudinal rear view showing part of the stockholder side of the rotary receiving blade Longitudinal rear view showing a part of the tip of the rotary receiving blade Longitudinal side view showing front cover opening and closing structure of threshing device front Front view of threshing device front Side view showing another embodiment of the scraper Side view showing another embodiment of the scraper Side view showing another embodiment of the scraper Side view showing another embodiment of the scraper Longitudinal side view showing another embodiment of front cover opening / closing structure of front part of threshing device Front view of front part of threshing device in another embodiment

10 Cutter case 10a Case side wall (fixed part)
10b Case wall (fixed part)
DESCRIPTION OF SYMBOLS 11 Rotating blade 12 Rotating cutting blade 14 Receiving blade shaft 15 Receiving blade 17 Cutting shaft 18 Cutting blade 20 Scraper 21 Engaging hole 23 Tongue piece (engaging part)
25 Protrusion (engagement part)
P fixed part

Claims (1)

A rotating receiving blade having a disk-shaped receiving blade mounted in parallel on the receiving blade shaft and a rotating cutting blade having a disk-shaped cutting blade mounted in parallel on the cutting shaft are opposed to and supported by the cutter case. In the disc-type waste wall cutter equipped with a scraper on the blade axis so as to be relatively rotatable,
The end portion of the scraper to the fixed portion provided in the cutter casing, engages in disengageably state along a direction intersecting the receiving blade shaft, the co-rotation of the receiving blade shaft of the scraper Configured to block ,
As the fixed portion, provided with an engagement hole formed in a case wall that is close to and opposed to the rotary receiving blade,
A disc-type waste wall cutter configured to insert and engage an end portion of the scraper into the engagement hole to prevent the scraper from rotating together with the receiving blade shaft .

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