JP2007289099A - Threshing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively and efficiently carry out grain dropping and recovery of free grain over rack by a simple constitution and to reduce the fourth loss. <P>SOLUTION: The threshing apparatus has a constitution that a standing guide body 15 for preventing grain scattering, which is brought into contact with unloaded grain culms and elasticity deformed in the unloading direction, in a standing state so as to project from downside upward, is installed at a grain culm unloading port 10 at the end of a threshing chamber 3 internally and pivotally mounting a threshing cylinder 2. The standing guide body 15 for preventing grain scattering is arranged in an area from the shaft center 2a of the threshing cylinder to a position near a plant foot side at a part corresponding to the ear tip side of unloaded grain culms. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a threshing apparatus used for a combine, a harvester, or the like, and belongs to the technical field of agricultural machinery.

Conventionally, the grain scattering prevention guide body provided at the cereal discharge port at the end of the handling room is generally configured to hang downward from the upper side, and is in contact with the discharged cereal. While applying resistance, it rubs down. Moreover, as disclosed in Patent Document 1, as the scouring means, the crushed grains are forcedly scraped off by rushing into the cereal layer discharged by the rotation of the endless belt with protrusions. Is known.
Japanese Utility Model Publication No. 5-41

  In the case where the former guide body is hung downward from the upper side, the contact resistance with respect to the cereals becomes uneven, and it is discharged without sufficient contact resistance being provided, so that it is effective to carry out small grains. It is not possible to obtain a proper scouring or recovery effect. In the latter case, the apparatus is large and complicated, and is not practically used.

  An object of the present invention is to eliminate the above-mentioned problems and to effectively and efficiently carry out the scraping with a simple configuration to reduce the fourth loss.

  The present invention has taken the following technical means in order to solve the above-described problems. That is, the present invention described in claim 1 is directed to the cereal discharge port portion (10) at the end of the handling chamber (3) in which the handling cylinder (2) can be mounted on the interior, The stand-up guide body (15) for preventing grain scattering, which can be elastically displaced in the discharging direction, is provided in an upright state so as to protrude upward from the lower side.

  The cereals that are nipped and transferred in the handling chamber (3) by the feed chain (14) are shed by the rotation of the handling cylinder (2), reach the end of the handling chamber (3), and are discharged from the cereal discharge port (10). Is done. After the threshing treatment, the cereals are transported backward from the cereal outlet part (10) of the handling room through the fourth receiving plate (12), but are discharged from the cereal outlet part. The tip side portion of the cereal is subjected to contact resistance by the standing guide body (15) rising from the lower side of the discharge port portion (10), and passes while pushing up the standing guide body (15) rearward. At this time, the cereal grains are scattered by the elastic restoring force of the standing guide body (15), and the coarse grains are screened downward.

  The present invention according to claim 2 is the invention according to claim 1, wherein the standing guide body (15) for preventing grain scattering is a part corresponding to the tip side of the discharged grain basket, and from the barrel axis (2a). It is provided within the range extending to the position close to the stock market side.

  By providing the standing guide body (15) for preventing grain scattering widely in the slimming direction of the cereal, the culm discharged from the cereal discharge port can be widely contacted from the tip to the stock side. Grain removal is extremely reduced and the fourth loss is reduced.

  In short, according to the present invention of claim 1, the elastically displaceable grain scattering prevention standing guide body (15) provided at the grain outlet (10) at the terminal end of the handling chamber (3) is provided on the lower side. Since it has a structure that stands up from the top, a suitable contact resistance is given to the discharged culm, and the culm is discharged while being pushed open against the elastic force of the standing guide body. The elastic repulsion force of the standing guide body will hit the cereal, and the sieving of the grains will be effectively and efficiently carried out, and the removal of the grains will be reduced and the fourth loss will be reduced. Can do.

  According to the second aspect of the present invention, while providing the effects of the first aspect, the cereal discharge outlet (10) is provided with a wide range of standing guides (15) for preventing grain scattering. In addition, it is possible to widely contact the cereals discharged from the cereal discharge port from the tip part to the stockholder side, and the carry-out of the small grains is extremely reduced, and the fourth loss can be greatly reduced.

Embodiments of the present invention will be specifically described below with reference to the drawings.
First, the structure of the combine shown in FIG. 1 will be described.
On the vehicle body provided with the traveling crawler W, a reaping part H that can be moved up and down is mounted on the front part, and a threshing device (threshing part) D is mounted on the rear part. A driving unit U is installed on the lateral side of the mowing unit H, and a Glen tank G is equipped behind it.

  Next, the configuration of the threshing apparatus D will be described. A receiving net 4 is stretched along a lower half circumference between a front side plate 5 and a middle side plate 6 of a handling chamber 3 in which a handling cylinder 2 with a tooth handling handle 1 can be pivoted. Between the middle plate 6 and the rear plate 7 on the terminal side of the handling chamber 3, there is a dust discharge path 8 that communicates with the sorting chamber below the handling chamber and the start end of the dust treatment chamber on which the dust treatment cylinder is mounted. Is provided.

  The front side plate 5 on the start end side of the handling chamber 3 is opened with a cereal supply port 9, and the rear side plate 7 on the end of the handling chamber is opened with a cereal discharge port 10. An inlet receiving plate 11 is connected to the front side of the cereal supply port 9, and a fourth receiving plate 12 is obliquely provided behind the outlet 10.

  A handling cylinder cover 13 covering the upper part of the handling chamber 3 is configured to be swingable around an axis parallel to the handling cylinder axis direction. Further, on the side of the handling chamber 3, there are provided a feed chain 14 for clamping and transporting the cereal stock side along the handling port, and a clamping rail 14 a facing the upper side. ing. The sandwiching rail 14a is mounted on the barrel cover 13 side and swings and opens together with the cover.

  The cereal discharge port 10 is made of an elastic material such as rubber, and a erection guide 15 for preventing scatter of grains that can be elastically displaced by the transfer pressure of the cereal is erected in an upright state from the lower side to the upper side. ing. As shown in FIG. 4, the standing guide body 15 for preventing grain scattering is a part corresponding to the tip side of the grain culm discharged from the discharge port 10, and closer to the potato stock side (L ) Is provided in a range extending to the position, and the degree of protrusion upward of the standing guide body is configured so that the tip side is sequentially higher than the stock side, and the standing guide body 15 has cuts at predetermined intervals. (Slit) 10a is provided. Since the guide body 15 protrudes from the lower side of the discharge port as described above, the grain scattering to the rear rear outside the handling chamber is surely prevented as compared with that suspended from the upper side, and the teeth are handled. The scraped grains that are scraped off flow along the dust removal path and quickly fall on the swing sorting shelf below.

  The standing guide body 15 shown in FIGS. 5 and 6 is slightly different from the configuration example shown in FIG. 4 and extends more widely from the tip side part corresponding to the discharge port 10 to the stock side part near the feed chain 14. The upper surface of the standing guide body has a substantially arc shape with a radius of the handle cylinder core 2a, or an arc shape that becomes higher at the tip side. As a result, the passage width of the cereals from the outlet becomes substantially uniform, the cereals can be discharged smoothly, and the cereals can be contacted from the stock side to the tip with a substantially uniform strength. Therefore, it is possible to enhance the recovery effect of the small grains. In addition, the protruding width (A) of the standing guide body to the discharge port is narrower than the culm passage width (B) between the lower edge of the discharge port and the outer periphery of the barrel, and the upper surface of the guide member is the width of the culm passage width. By setting the substantially intermediate position, the discharge resistance of cereals from the handling room increases, and problems such as clogging during cereal discharge do not occur.

  Furthermore, as shown in FIG. 6, the pitches P1 and P2 between the slits provided in the guide body 15 are elastic toward the rear on the tip side by making the pitch P1 on the tip side denser than the pitch P2 on the stock side. Displacement is made easier than the stock side, and it can be discharged smoothly without breaking the thin tip of the slime, and the stock side is roughened to increase resistance and increase the effect of removing the grains. In addition, as shown in FIG. 7, the stocker side of this guide 15 is made into the notch part 15b instead of the slit 15a, and it is trying to balance contact resistance.

  The embodiment shown in FIG. 8 and FIG. 9 has a structure in which the standing guide bodies are arranged in a double manner in the front and rear, and both are provided with a difference in height so that the rear standing guide body 16 with respect to the front standing guide body 15 is provided. Is raised upward. The cereals discharged from the discharge port will be subjected to at least two contact resistances, that is, squeezing resistance, and the scouring effect will be further improved.

  By providing a space portion of a predetermined width between the front and rear standing guide bodies 15 and 16, grains and straw scraps collected from the cereal by the action of the standing guide body are collected between the front and rear standing guide bodies. And can be quickly guided to the lower swing shelf through the space. In addition, the front and rear standing guide bodies are configured to have different elastic forces, that is, the front standing guide body 15 has a lower elastic force than that of the rear standing guide body 16 so that the front standing support body 16 is appropriately flexible. It is possible to easily elastically displace backward by the guide body to guide the 4th small grains to the surface of the cereal and to easily beat the small grains with the rear standing guide body having a strong elastic force.

  The embodiment shown in FIGS. 10 and 11 is a hanging guide body 17 that hangs downward from the upper side of the discharge port portion with respect to the standing guide body 15 that protrudes upward from the lower side of the discharge port portion 10. It is set as the structure which provided. Since it can be made to act from both upper and lower sides so that the cereal discharged | emitted by both the standing guide body 15 and the drooping guide body 17 may be pinched | interposed, it can collect | recover saliva grains favorably. The upper end of the standing guide body 15 and the lower end of the drooping guide body 17 overlap in the front-rear direction, and the cereals discharged by both actions are shaken up and down, so that the grains that have entered the cereals It becomes easy to fall. Also, by providing slits (cuts) 15a ..., 17a ... on both the upper and lower guide bodies 15, 17, the cereal discharge resistance becomes too large, the cereal folds are broken, and the takeover posture to the waste straw transporter is disturbed. Can be prevented. Inclined surfaces S1 and S2 are provided on the stock base side of the standing guide body 15 and the drooping guide body 17, and a V-shaped open space is formed in which the opening is widened toward the stock base side in a rear view (see FIG. 11). Thus, the cereal stock side can be reliably pulled out of the handling room, and the cereal transport is not hindered.

  In addition, by making the opening width D1 of the left end of the standing guide body 15 and the hanging guide body 17 and the opening width D2 of the cereal discharge port 10 substantially uniform, even if the cereal discharge amount increases, There is no hindrance to cereal discharge, and it can be discharged in an orderly manner. The standing guide body 15 is set to the front position on the discharge port 10 side, and the hanging guide body 17 is arranged rearward from the standing guide body 15 so that the processing object in the dust discharge path is blocked by the standing guide body. It is possible to scrape the grains on the upper surface of the standing guide body, and to collect the grains with the trailing guide body on the rear side.

  As shown in FIGS. 12 to 14, the dust discharge passage 8 at the end of the handling chamber 3 is formed by a dust discharge guide plate 8 b provided with a plurality of filter holes 8 a. On the upper side of the dust feeding direction (upper side of the barrel rotation direction), partitioning resistors 18 of the processing object are projected. In the dust passage path at the end of the handling chamber, a filter hole is provided in the dust guide plate, so that grains and dust that are roughly sorted by the action of the tooth handle are placed on the swing sorting shelf below each filter hole. In order to prevent overloading in the handling chamber and dust disposal chamber. In addition, by providing a partition resistor for the processed material on the upper side of each filter hole in the dust feeding direction, the processed material carried around in the dust removal path is reliably unraveled by the joint action of the tooth handling and the partition resistor. As a result, the separation and degranulation process can be performed satisfactorily, the filtering action of grains and dust can be promoted, and the efficiency can be improved. Further, the partition resistor 18 is formed so as to maintain the inclination angle θ in a plan view. By forming the tip of the partition resistor in a comb-like shape 18a, the teeth 1 are disposed between the comb teeth 18a and 18a. It is configured to overlap so as to pass. Therefore, this improves the handling action of the dust-treated product, and the separation and grain removal treatment action can be effectively performed.

In the sorting chamber 20 below the handling chamber 3, a swing sorting shelf 21 is installed, and the filtered material from the handling chamber receiving net 4 and the filtered material from the dust discharge path 8 are received and screened. .
A second processing chamber 23 in which a second processing cylinder 22 is pivotally mounted is arranged in parallel on one side opposite to the feed chain 14 side of the handling chamber 3, and the same axial core is provided behind the second processing cylinder 22. Above, a dust removal treatment chamber 25 in which a dust removal treatment cylinder 24 is pivoted is provided. The dust removal processing cylinder 24 receives the processed material from the dust discharge path 8 of the processing chamber 3 and conveys it backward, and the second processing cylinder 24 forwards the second processed material from the second reduction device 32. It is set as the structure processed while conveying toward. An intake spirer 26 is provided at the starting end of the dust exhausting cylinder 24 over the communication port width corresponding to the dust exhaust path 8 so that the processed product is quickly sent toward the rear of the processing chamber.

  The swing sorting shelf 21 is configured to receive the processed product after the threshing process and screen it while swinging. As shown in FIG. 2, the swing shelf 21 a, the chaff shib 21 b, the straw -It is set as the structure which has arrange | positioned in order of the rack 21c and has arrange | positioned the glenive 21d below the said chaff sheave 21b.

  In addition, in order from the upper side of the sorting direction to the lower side of the swing sorting shelf 21, the Kara 27, the first transfer spiral 28, the second transfer spiral 29, and the suction dust fan 30 are provided on the upper side thereof for sorting. The chamber 20 is configured. The 1st grain from the 1st transfer spiral 28 is accommodated in the Glen tank G via the 1st cerealing device 31.

Combine side view Side cross section of threshing device Side sectional view of the main part Rear view of threshing device Side sectional view of an essential part of a threshing apparatus showing another embodiment Rear view of the main part Rear view of main part of threshing device Furthermore, the sectional side view of the principal part of the threshing apparatus which shows another Example. Rear view of the main part Side sectional view of the main part of the threshing device Rear view of the main part Broken plan view of the main part of the threshing device Cut front view of the main part Side sectional view of the main part

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Teeth handle 2 Handle barrel 3 Handling chamber 7 Rear side plate 10 Grain discharge port 15 Standing guide body for preventing grain scattering

Claims (2)

  The handling chamber (3) in which the handling cylinder (2) can be pivoted on the interior (3) at the end of the cereal discharge port (10), which is in contact with the discharged culm and can be elastically displaced in its discharge direction Threshing apparatus characterized in that the standing guide body (15) is attached in a standing state so as to protrude upward from the lower side.   The stand-up guide body (15) for preventing grain scattering is provided at a portion corresponding to the tip side of the discharged grain pod and within a range extending from the barrel axis (2a) to a position closer to the stock market side. The threshing apparatus according to claim 1.

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