JP2007082455A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate problems of the conventional type by omitting a conventional type waste straw transporting apparatus for transporting waste straws after threshing and directly leading the waste straws to a waste straw cutter by a feed chain itself and to improve waste straw transporting performances in a combine harvester. <P>SOLUTION: The combine harvester is characterized as follows. The waste straw cutter 7 for carrying out a cutting treatment of the waste straws after the threshing to a prescribed length is installed at a suitable place in the rear of a threshing part 4 composed of a threshing chamber 14 internally and axially installing a threshing cylinder 13 in the front and rear directions and a feed chain 17 stretched on one side of the threshing chamber with a nipping rail 18 oppositely installed on the upper side. The terminal end of the feed chain 17 is extended rearward long even to the vicinity of the waste straw cutter 7 and composed so that the waste straws after the threshing are led toward a cutting site of the cutter. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a combine that threshs while harvesting cereal grains in a field, and belongs to the technical field of agricultural machinery.

Conventionally, as disclosed in Patent Document 1, by providing a waste straw conveying device that takes over the waste straw after threshing from the feed chain and carries it out obliquely backward at the rear of the threshing portion, The straw is guided to the waste straw cutter or dropper so that the waste straw is processed.
JP-A-9-154396

  The conventional waste straw transporter not only has a complicated configuration itself, but also tilts at a predetermined angle with respect to the feed chain, so that the transmission configuration is also complicated. In the takeover part, there was a frequent occurrence of stagnation and clogging of the waste straw, which hindered the delivery of the waste straw.

  An object of the present invention is to eliminate the above-mentioned problem by omitting a conventional type of waste straw conveying device that conveys the waste straw after threshing, and guiding it directly to the waste straw cutter by the feed chain itself.

  The present invention has taken the following technical means in order to solve the above-described problems. That is, according to the present invention, the handling chamber (14) in which the handling cylinder (13) is axially mounted in the front-rear direction and the holding rail (18) on the upper side of the handling chamber are provided to face each other. A waste straw cutter (7) for cutting the waste straw after threshing into a predetermined length is installed at an appropriate rear position of the threshing portion (4) comprising the feed chain (17), and the end of the feed chain (17). Is extended to the back to the vicinity of the waste straw cutter (7), and the waste straw after threshing is guided toward the cutter cutting site.

  The harvested cereal meal fed into the handling chamber (14) is threshed by the handling cylinder (13) that rotates while being nipped and conveyed by the feed chain (17) and the clamping rail (18). The waste straw after the threshing treatment is still conveyed backward by the feed chain (17), guided to the waste straw cutter (7) behind the threshing section (4), and dropped downward from the conveyance end, and the waste straw cutter (7) Received above and cut to a predetermined length.

  Since the waste straw after threshing is conveyed straight to the waste straw cutter (7) by the feed chain (17), it does not require a separate waste straw transporting device different from the conventional feed chain, and has a complicated transmission configuration. Can be omitted and can be implemented at low cost. In addition, since there is no takeover part, there is almost no stagnation or clogging of the waste straw and the conveyance performance is improved.

  According to a second aspect of the present invention, in the first aspect, the threshing part (4) is configured such that at least the terminal side of the feed chain (17) is displaced from the uncut area toward the precut area with respect to the traveling direction of the machine body. It is made to incline so that it may do.

  Since the threshing part (4) is inclined so that the rear part is displaced from the uncut area to the already-cut area in plan view, the waste straw cutter (7) to be installed at the rear part of the threshing section should be placed on the already-cut area as much as possible. The cutting straw can be prevented from falling to the uncut area.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the end side of the clamping rail (18) extends (18a) longer than the end of the feed chain (17) so as to extend the waste wall cutter. (7) It is faced above.

  The waste straw pushed out from the end of the feed chain (17) can be guided to the cutter (7) while being guided by the extending portion (18a) of the holding rail (18), and the lifting of the waste straw is suppressed. It can be guided and dropped in an orderly manner.

  In short, according to the present invention of claim 1, since the waste straw after threshing is conveyed straight to the waste straw cutter (7) by the feed chain (17), the waste straw separate from the conventional feed chain. A conveying device is not required, and a complicated transmission configuration can be omitted, so that an inexpensive and simple configuration is possible. Further, since no intermediate takeover conveyance unit is required, stagnation or clogging of the exhaust wall can be eliminated, and conveyance performance can be improved.

  Moreover, according to this invention of Claim 2, although there exists the invention effect of Claim 1, as for the threshing part (4), the rear part is displaced from the uncut area to the already-cut area side by planar view. By tilting, the waste straw cutter (7) installed at the rear part of the threshing part can be brought as close as possible to the already-cut area, preventing the cutting straw from falling to the uncut area and improving work efficiency. Can do.

  Further, according to the present invention of claim 3, the end of the holding rail (18) extends rearward longer than the end of the feed chain (17) while achieving the effects of the invention of claim 1 or claim 2. Since it is in a position facing the discharge wall cutter (7), the discharge wall pushed out from the end of the feed chain (17) is guided by the extending portion (18a) of the holding rail (18) and up to the cutter. It can be reliably guided, and can be guided and dropped in an orderly manner while suppressing the lifting of the waste straw.

Embodiments of the present invention will be specifically described below with reference to the drawings.
First, the configuration of the combine shown in FIGS. 1 and 2 will be described.
On the vehicle body 2 having the traveling crawler 1, a mowing unit 3 that can be raised and lowered is mounted on the front, and a threshing unit (threshing machine) 4 is mounted on the rear. A driving unit including an operation box 5 and a driver's seat 6 is installed on the lateral side of the cutting unit 3, and a Glen tank G is mounted behind the driving unit. Moreover, the waste straw cutter 7 which cuts the waste straw after the threshing processing into a predetermined length is installed in the rear part of the threshing portion 4. The waste straw cutter 7 includes a cutting blade 7a and a rotor blade 7b, and several sheets are arranged at predetermined intervals in the horizontal direction and are opposed to each other in the front-rear direction.

  The reaping unit 3 raises the raising device 8 that raises the napped cereal, the reaping device 9 that reaws the cereal after raising, and the stock transportation that lifts and conveys the stock of the cereal after harvesting. The chain 10 is composed of the chain 10 and the tip transporting chain 11 that lifts and transports the head side of the grain pod while engaging and holding it.

  Next, the configuration of the threshing unit 4 will be described. A receiving net 15 is stretched along the lower half of the handling chamber 14 in which the handling cylinder 13 is pivotally mounted. A handling cylinder cover 16 that covers the upper portion of the handling chamber 14 is configured to be swingable and openable about an axis parallel to the handling cylinder axis direction.

  On one side of the handling chamber 14, there are disposed a feed chain 17 for sandwiching and transporting the cereal and a sandwiching rail 18 provided on the upper side. The sandwiching rail 18 is mounted on the barrel cover 16 side and swings and opens together with the cover. On the other side of the handling chamber 14 opposite to the feed chain 17 side, a second processing chamber having a second processing cylinder 21 as an interior shaft is provided side by side. In addition, a dust removal treatment chamber having a dust removal treatment drum 22 mounted on the same axis as the interior is provided behind the second treatment drum 21.

  In the plan view, the threshing portion 4 includes a handling cylinder 13 installed in the front-rear direction and a feed chain 17 provided in parallel to the axial direction of the handling cylinder in a terminal side (rear end). (Side) is arranged so as to be inclined at a predetermined angle θ so as to be displaced from the uncut area (left side) toward the already cut area (right side). The feed chain 17 extends rearward from the end of the handling chamber 14 to the vicinity of the waste straw cutter 7 so as to extend rearwardly. The waste straw after threshing is sandwiched and conveyed by the upper sandwiching rail 18. And configured to guide toward the cutter cutting position.

  As shown in FIG. 3, the threshing conveyance path portion of the feed chain 17 rises toward the rear side to form an inclined surface 17 </ b> S. However, the horizontal surface 17 f (the clamping rail 18 is also included) Since the waste straw after passing the handling chamber can be sent to the horizontal state, the conveying posture is stabilized and the flow of the waste straw is also smooth.

  In addition, the said waste straw cutter 7 is arrange | positioned so that the one part may protrude from the feed chain 17 terminal | end to the stock origin side (left side) of a waste straw, and the stock base part of a waste straw can be cut | disconnected. At the end of the feed chain, a stock support support guide 19 is provided on the left side of the feed chain to receive the stock side of the waste straw and guide it to the projecting portion of the waste straw cutter. Like to do.

  Further, the end side of the holding rail 18 extends rearwardly longer than the end of the feed chain 17 and faces the discharge wall cutter 7, and the discharge wall pushed out from the end of the feed chain is connected to the holding rail. It is configured so as to be guided to the cutter while being guided by 18 extending portions 18a.

  In front of the waste straw cutter 7 and in the vicinity of the end of the feed chain 17, a waste straw transport guide rod 23 is provided so as to be switched between a cutter work and a long straw discharge work such as a dropper. That is, as shown in FIG. 5, during the dropper operation, the waste straw transport guide rod 23 is changed to the (a) posture state along the front-rear direction on the cutter 7, and during the cutter operation, the sideways retreating from the cutter (B) The configuration is changed to the posture state (virtual line). In addition, the waste straw conveying guide rod 23 is configured to be inclined downward so that the rear end is positioned downward, so that it can be smoothly discharged to the rear part of the cutter during the dropper operation.

  Immediately behind the handling cylinder 13, a dust discharge fan (transverse flow fan) 30 is horizontally mounted, and the dust fan input shaft 33 and the speed increasing gear case 35 are increased from the dust fan driving sprocket 32 at the end of the feed chain 17. The dust-removing fan shaft 36 is rotationally driven via the high-speed gear mechanism 34. When passing the cereals in the handling chamber, the dust exhaust fan can be driven reliably, and problems such as belt slip due to overload are eliminated. In addition, the rigidity of the machine frame itself is improved by mounting and supporting the speed increasing gear case inside the speed increasing gear mechanism on the machine frame. Reference numeral 43 denotes a dust fan separation plate.

  Further, the feed chain starting end side drive section is provided with a feed chain stop motor 37 and a feed chain stop mechanism 38 for switching the driving “on” and “off” of the feed chain drive sprocket 31. When the feed chain is not operated, the dust fan 30 is configured to stop. Accordingly, corner loss can be reduced by stopping the dust discharge fan in a situation in which the processed material is not newly introduced into the handling chamber, such as during corner turning of work. It should be noted that when the cutting part is raised to the non-working position when the machine turns during cutting work, a combine that automatically stops the operation of the cutting part and feed chain has been put into practical use. Then, in connection with this, the driving of the dust discharge fan can be stopped simultaneously. In the figure, reference numeral 44 denotes a feed chain drive gear case, and 45 denotes a net presser.

  As shown in FIG. 2, it arrange | positions so that the conveyance path surface F1 in the fixed range of the stock origin conveyance chain 10 terminal part of the cutting part 3 and the conveyance path surface F2 of the feed chain 17 starting part may be substantially parallel in planar view. By comprising, the inheritance conveyance of the grain candy from the stock transporter chain 10 to the feed chain 17 can be performed in an orderly manner with a good posture.

  The dust discharge fan 30 is disposed below the shaft core 13a of the handling cylinder 13 on the end side of the swing sorting device (swing sorting shelf) 50, which will be described later, and is discharged from the handling chamber. The straw is guided rearward and upward along the upper surface of the exhaust guide plate 41 obliquely provided above the exhaust fan casing 40, and the exhaust gas includes grains discharged from the end of the handling chamber together with the exhaust wall. The processed material is sucked by the dust exhaust fan immediately after it and discharged from the dust outlet 42 or falls on the swing sorting shelf below and is subjected to swing sorting processing. Since the tip side of the discharge wall guide plate 41 is guided from the conveyance holding position by the feed chain, the discharge wall can be discharged smoothly and the posture of the discharge wall guided to the cutter unit is stabilized. Further, the dust discharge fan 30 has an upper end substantially the same as that of the handle cylinder core 13a, and a lower end thereof is above or the same as the tip of the tooth-handling, so that the processed material on the swing sorting shelf is conveyed or dust-absorbed. I try not to interfere with it.

  As shown in FIG. 4, the front / rear length L1 of the handling cylinder 13 is set to be more than half of the front / rear length L2 of the threshing part, and the front end position of the handling cylinder is approximately aligned with the first return shelf 60 part. By doing so, it is possible to set the handling cylinder length as close as possible to 30 parts of the dust discharge fan, and it is possible to increase the capacity of the handling chamber and the processing efficiency of the handling chamber. . In addition, as the length of the barrel is increased, the area of the receiving net is also increased, and further, the processing efficiency of the processed material that leaks through the receiving net on the swing sorting shelf is also increased. Sorting will not deteriorate even if it is moved to the rear side, and the sorting ability will be expanded.

In FIG. 5, 24 indicates an inlet funnel provided on the front side of the handling chamber 14, and 25 indicates a dust discharge port provided on the end side of the handling chamber.
An oscillating sorting device (oscillating sorting shelf) 50 is provided below the handling chamber 14 and below the dust collecting sorting chamber so as to be swingable. The sorting chamber is configured by arranging the tang 51, the first transfer spiral 52, the second transfer spiral 53, and the dust fan 30 above the first transfer spiral 52. The first cerealing device 54A lifts the grains recovered by the first transfer spiral 52 and stores them in the Glen tank G, and the grains in the tank can be taken out by the discharge auger 55. Yes. The second cerealing device 54 </ b> B is configured to return the second processed product collected by the second transfer spiral 53 to the interior of the second processing cylinder 21.

  The swing sorting device 50 is configured to receive a processed product after the threshing process from the handling room, that is, to be processed, and to perform sieve sorting while swinging and transferring. -The groove 57 and the straw rack 58 are arranged in this order, and the granule 59 and the first return shelf 60 are arranged integrally below the chaff sheave 57, and are provided integrally with the tongue 51 and the dust fan 30. It is configured to receive the processed material leaked from the handling chamber 14 by the combined action of the sorting air and the shaking, and perform the sieve sorting process while swinging and transferring.

Combine side view Top view of the combine Side view of the main part of the combine Cut side view of the main part Top view of threshing section Cut front view of the main part Cut front view of the main part Cut back view of main part of threshing part Cut back view of the main part

Explanation of symbols

4 Threshing part 7 Waste straw cutter 13 Handling cylinder 14 Handling room 17 Feed chain 18 Holding rail 18a Extension part of holding rail

Claims (3)

  Threshing section comprising a handling chamber (14) in which a handling cylinder (13) is pivoted in the front-rear direction, and a feed chain (17) provided on one side of the handling chamber and provided with a holding rail (18) on the upper side. A waste straw cutter (7) that cuts the waste straw after threshing into a predetermined length is installed at a suitable rear position in (4), and the end of the feed chain (17) is moved backward to the vicinity of the waste straw cutter (7). The combine characterized by being comprised so that it may extend long and guide the waste straw after threshing toward a cutter cutting part.   The said threshing part (4) is inclined so that at least the terminal side of the feed chain (17) is displaced from the uncut area toward the already cut area with respect to the traveling direction of the machine body. Combine as described.   The end side of the holding rail (18) extends rearwardly (18a) longer than the end of the feed chain (17) and faces the discharge wall cutter (7). The combine according to claim 2.

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