JP2012110305A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a No.3 loss by suppressing scattering of swung and sorted grains to outside during non-harvesting work.SOLUTION: When a harvesting unit (3) rises to a prescribed non-harvesting work height, driving of the harvesting unit (3), a threshing feed chain (12) and a swing-sorting shelf (17) is automatically stopped. When the harvesting unit (3) is lowered to a prescribed harvesting work height, driving of the harvesting unit (3), the threshing feed chain (12) and the swing sorting shelf (17) is automatically restarted. The combine harvester also has a processed object amount detection sensor (33) in a threshing part (4) for detecting the amount of processed objects after threshing. When the harvesting unit rises to the non-harvesting work height and when the amount of processed objects detected by the processed object amount detection sensor (33) is smaller than a prescribed amount, driving of the threshing feed chain (12) and the swing-sorting shelf (17) is automatically stopped.

Description

  The present invention relates to a combine.

  Conventionally, for example, as shown in Patent Document 1, when the cutting unit rises to a predetermined height or more, the driving of the cutting unit and the threshing feed chain is stopped, and when the cutting unit descends to a predetermined cutting height, the cutting unit And the technology to resume driving the threshing feed chain is known.

JP-A-9-74879

  According to the conventional configuration, when the mowing unit rises above a predetermined height, the driving of the mowing unit and the threshing feed chain is stopped. In this case, the threshing unit is still driven at the rated rotation, so that the sorting is particularly performed. There was a problem that the third scattering (third loss) to the outside of the machine occurred frequently due to the swing of the shelf.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the invention described in claim 1 is a threshing feed chain (12) provided on one side with a harvestable part (3) capable of raising and lowering the planted culm, and a culm fed into the handling room (13). In a combine equipped with a threshing part (4) for threshing while being transferred by a sway and a swing sorting shelf (17) for swinging and sorting processed products after threshing, the cutting part (3) rises to a predetermined non-cutting work height Then, the drive of the reaping part (3), the threshing feed chain (12) and the swing sorting shelf (17) automatically stops, and when the reaping part (3) is lowered to a predetermined reaping work height, the reaping part (3 ), The threshing feed chain (12), and the swing sorting rack (17) are automatically restarted.

  When the mowing part (3) is raised to a predetermined non-reaching work height at the end of one-stroke mowing, the driving of the mowing part (3) stops and the threshing feed chain (12) and the swing sorting shelf (17) Stops driving.

  Then, when the mowing part (3) is lowered to the predetermined mowing height at the start of the next process, the mowing part (3) is driven, and the threshing feed chain (12) and the swing sorting shelf (17) are driven. Drive resumes.

  When the mowing unit (3) rises to the non-working position, in addition to stopping the driving of the mowing unit (3) and the threshing feed chain (12), the driving of the swing sorting shelf (17) automatically stops. The grain during dynamic sorting will not be scattered outside the machine along with straw scraps, and the third loss will be reduced.

  Invention of Claim 2 provides the processed material quantity detection sensor (33) which detects the quantity of the processed material after threshing in the said threshing part (4), a cutting part raises to the non-cutting work height, and the said process When the amount of processed material detected by the amount detection sensor (33) is smaller than a predetermined amount, the driving of the threshing feed chain (12) and the swing sorting shelf (17) is automatically stopped. The combine according to claim 1.

  During the threshing operation, if the amount of processed threshing is reduced to a certain level or more, the grain is easily blown out of the machine by the sorting wind or the like, and the third loss occurs frequently. Therefore, when the amount of processed material detected by the processed material amount detection sensor (33) is smaller than a predetermined amount, the driving of the swing sorting shelf (17) automatically stops with the stop of the threshing feed chain (12). Grain scattering is avoided and the third loss can be greatly reduced.

  The invention according to claim 3 is characterized in that the processing amount detection sensor (33) is a sensor for detecting a layer thickness of the processing product on the transfer shelf (18) in front of the swing sorting shelf (17). The combine according to claim 2.

  On the front side of the swing sorting shelf (17), a large amount of the threshing product from the handling chamber (13) falls to start handling. Therefore, since the processed material amount detection sensor (33) detects the layer thickness of the processed material that falls in a large amount on the front side of the swing sorting shelf (17), it can be detected accurately with almost no false detection. The above-mentioned drive stop can be performed with good timing according to the amount of the quantity.

  The invention according to claim 4 provides a threshing clutch (29) as a first clutch in the middle of the transmission path from the engine (E) provided in the airframe to the threshing section (4), and on the lower transmission side of the threshing clutch (29). The combine according to any one of claims 1 to 3, wherein a second clutch (30) is provided in the middle of a path for transmitting the swing sorting shelf (17) and the threshing feed chain (12). And

  When the threshing clutch (29), which is the first clutch, is turned off, the drive of the entire threshing section (4) is stopped, and when the second clutch (30) is turned off, the swing sorting shelf (17) and the threshing feed chain (12) are stopped. Only stop driving. Accordingly, the driving of the whole threshing unit such as the barrel (14), the tang, the dust exhaust fan, the swing sorting shelf (17) of the threshing unit is stopped by cutting the first clutch (29), or the second clutch (30). It is possible to stop the driving of only the swing sorting rack (17) and the threshing feed chain (12) by cutting the chopping, or to selectively control the switching according to the amount of cutting or the amount of processed threshing.

  According to invention of Claim 1, when a cutting part (3) is raised to a non-working position, in addition to the drive stop of a cutting part (3) and a threshing feed chain (12), a rocking sorting shelf (17) Is automatically stopped, so that it is possible to suppress the grain being oscillated and splattered from scattering out of the machine, and to reduce the third loss.

  According to the second aspect of the present invention, when the amount of the processed material detected by the processed material amount detection sensor (33) is smaller than the predetermined amount while the effect of the first aspect of the invention is achieved, the threshing is performed. Since the drive of the swing sorting shelf (17) is automatically stopped together with the feed chain (12), the grain is prevented from being scattered outside the machine, and the third loss can be greatly reduced.

  According to the invention described in claim 3, while having the effect of the invention described in claim 2, the processed material amount detection sensor (33) has a layer thickness of the processed material on the transfer shelf (18) that falls in a large amount. Is detected accurately, and the threshing feed chain (12) and the swing sorting rack (17) can be stopped in a timely manner depending on the amount of the processed material.

  According to the invention described in claim 4, while having the effect of the invention described in any one of claims 1 to 3, the handling cylinder, red pepper, and dust exhausted by cutting the threshing clutch (29). Stop driving the entire threshing unit such as the fan and the swing sorting shelf (17), or stop driving only the swing sorting shelf (17) and the threshing feed chain (12) by turning off the second clutch (30). Switching control can be selectively performed depending on the amount of cutting or the amount of processed threshing.

Combine side view Side sectional view of the main part of the threshing part Combined power transmission path diagram Side sectional view of the main part of the threshing part Side view of essential parts of threshing unit Operation mechanism of flapper and first return shelf Longitudinal front view of the main part of the threshing unit Side sectional view of the main part of the threshing part Top view of the main part

An embodiment of the present invention will be described with reference to the drawings.
The combine consists of a cutting part 3 at the front part of the vehicle body 1 provided with the traveling crawler 2 and a threshing part 4 at the rear part of the vehicle body that threshs the cereals that are conveyed and supplied from the cutting part 3.

  The reaping part 3 is a weed body 5, 5 that splits the cereal to be planted to the left and right, a stalk raising apparatus 6 for 6 stalks that causes the cereal after weeding, and the cereal that has been raised. Clipper-type harvesting device 7 for harvesting, rake feeding device 8 for scraping and transporting the harvested culm, lifting and transporting the grain culm after scraping and transporting to the rear threshing unit 4 for feeding A vertical cutting frame 10 that is provided along the front-rear direction and can be moved up and down with respect to the vehicle body, and a horizontal cutting frame 11 that is provided along the left-right horizontal direction at the tip of the vertical cutting frame. Equipped with.

  The threshing unit 4 is configured to perform a threshing process by a handling cylinder 14 that is driven and rotated in the handling chamber 13 for the tip part of the cereal bowl that is conveyed while holding the stock by the threshing feed chain 12. A second treatment cylinder 15 and a dust removal treatment cylinder 16 are installed on one side of the handling chamber 13 opposite to the feed chain 12 side. Also, below the handling chamber 13, there is provided a swing sorting shelf 17 that receives the processed product after the threshing process and screens it while swinging and transporting, and from the upper side of the sorting direction, the transfer shelf 18, the first chaff sheave 19a, The second chaff sheave 19b and the straw rack 20 are arranged in this order, and the granule 21 is arranged below the first and second chaff sheaves 19a and 19b. Further, below the swing sorting shelf 17, in order from the upper side of the sorting direction, the tang 22, the first spiral 23, the second spiral 24, and the dust discharge fan 25 are arranged above the spiral. Yes.

  The rotational power of the engine E is transmitted to the cutting unit 3 through the cutting clutch 28, and the power is transmitted to the threshing unit 4 through the threshing clutch 29 that is the first clutch. Power is transmitted to the threshing feed chain 12 and the swing sorting rack 17 via a second clutch 30 provided in the middle of the transmission path on the lower transmission side of the first clutch (threshing clutch) 29. Yes. The cutting clutch 28 and the threshing clutch 29 are turned on and off by a cutting / clutching lever.

  In the clutch-engaged state of the first clutch 29 and the second clutch 30, the handling cylinder 14, the treatments 5 and 16, the tang 22, the first spiral 23, the second spiral 24, the swing sorting shelf 17, the threshing feed chain 12 and the like Is to be driven. When the first clutch 29 is engaged and the second clutch is disengaged, the driving of the swing sorting rack 17 and the threshing feed chain 12 is stopped.

The reaping clutch 28, the first clutch 29, and the second clutch 30 are intermittently controlled via a clutch motor.
A cutting position sensor 31 for detecting the vertical position of the cutting unit is provided on the terminal side of the cutting unit 3 of the cutting unit 3.

  When the cutting lift 3 is raised to a predetermined height or more by operating the cutting lift lever 32 at the end of one-stroke cutting, the cutting clutch 28 and the second clutch 30 are moved via the clutch motor by the detection of the cutting position sensor 31. Cutting is performed, and the driving of the cutting unit 3, the threshing feed chain 12, and the swing sorting shelf 17 is stopped.

  When the cutting unit 3 is lowered to a predetermined cutting height at the start of cutting in the next stroke, the cutting clutch 28 and the second clutch 30 are engaged by the detection of the cutting position sensor 31, and the cutting unit 3 and the threshing feed chain 12 are turned on. The drive of the swing sorting shelf 17 is resumed.

Further, when the mowing unit 3 is raised to a predetermined height or more and the mowing clutch 28 and the first clutch 29 are turned off, the driving of the threshing unit 4 as a whole is stopped simultaneously with the driving of the mowing unit 3 being stopped.
On the transfer shelf 18 at the starting end side of the swing sorting shelf 17, the amount of processed material is constituted by a sensor float 33 a that rotates up and down according to the layer thickness of the processed material and a layer thickness sensor 33 b that detects the vertical movement of the sensor float. A sensor 33 is installed. When the cutting unit 3 is raised to the non-cutting work height, the driving of the cutting unit is stopped, and the amount detected by the processing amount detection sensor 33 is less than a predetermined value in a state where the cutting unit is raised to the non-cutting work height. Then, when the driving of the threshing feed chain 12 and the swinging sorting shelf 17 or the threshing unit 4 is stopped and the cutting unit is lowered to the cutting work height, the cutting unit 3, the threshing feed chain 12 and the swinging sorting shelf 17 or the threshing. The driving of the entire unit 4 is resumed.

  Next, the embodiment shown in FIGS. 4 to 7 will be described. In the wind selection path of the sorting wind from the Karatsu 22, two upper and lower wind fluids (flappers) 36 and 37 that change the flow of the sorting wind are provided. The upper wind fluid 36 is configured to swing up and down around the pivot point Q1 at the start end, and the lower wind fluid 37 swings up and down around the pivot shaft Q2. It is configured to be dynamically displaced.

  The upper and lower wind fluids 36 and 37 are connected by a connecting link 38, and the inclination angle of the wind fluids 36 and 37 can be changed by moving the connecting link 38 in the length direction.

  Since the amount of air flowing on the first return shelf 39 decreases as the lower wind fluid 37 swings and displaces to the close (backward upward) side, the second fan 40 is accelerated to increase the second fan of the fan 40. The air volume in the air passage 41 is increased. According to this configuration, as the flapper (wind fluid 37) is closed and the air volume on the first return shelf decreases, the amount of straw waste in the second item increases, so the waste waste in the second item is removed. This makes it easy to prevent the increase in the amount of the processed material on the swing shelf, and it is possible to maintain the first selection well.

  Conversely, when the flapper is opened, the air volume on the first return shelf 39 is increased and the air volume to the third outlet is also increased, so that the second fan 40 is decelerated although it is likely to be scattered outside the machine. Thus, such a problem can be solved.

  The flappers 36 and 37 change the inclination angle in accordance with the amount of processed material. However, when the amount of processed material is large, the angle of the flapper 36 is lowered backward (the lower flapper opens), so the air volume on the first return shelf is Will increase. Therefore, the second fan 40 is configured to be decelerated as the amount of detection of the processing amount detection sensor 33 provided on the transfer shelf 18 increases.

  Further, as described above, in the configuration in which the second fan 40 is provided and the rotation speed of the second fan is changed so that the amount of exhaust air in the second fan air passage 41 is variable, the first return shelf 39 has a rotation fulcrum. The tilt angle can be changed around P. If the posture of the first return shelf 39 is changed in a direction with a larger inclination angle, the amount of discharged air is increased, and the posture of the first return shelf 39 is changed in a direction with a smaller inclination angle. Then, the rotational speed of the second fan 40 is changed so that the amount of discharged air is reduced. By changing the amount of air discharged from the second fan 40 in accordance with the change in the posture of the first return shelf, it becomes easy to keep the screening air coming out from the third outlet constant, and loss can be reduced.

  In addition, when the tilt angle of the first return shelf 39 is small, the sorting fan to the outside of the machine is easy to escape and the amount of processed material is small, so the second fan decelerates. Conversely, when the tilt angle of the first return shelf is large, it is difficult to come out of the machine, and the amount of processed material is large, so that the second fan increases in speed.

  The rotation speed (air volume) of the second fan 40 is configured to be adjustable according to the change of the flapper angle. That is, the lower flapper 37 rotates around the fulcrum axis Q2 via the drive motor 42, the position sensor 43, the drive gear 44, the operating arm 45, and the flapper rotation arm 46, as shown in FIG. By changing the inclination angle of the flapper 37, the speed is changed by changing the rotation diameter of the drive pulley 40a of the second fan 40 via the swing arm 47, the rod 48, and the speed change cam 49. (See FIG. 5). Further, the operation wire 50 that pushes and pulls in conjunction with the operation arm 45 is configured to change the inclination angle of the first return shelf 39 (see FIG. 6). In FIG. 5, reference numeral 22a denotes a Kara pulley, 23a denotes a first spiral pulley, and 24a denotes a second spiral pulley. 4 and 7, a first return shelf seal 51 is laid on the first return shelf 39.

  In the swing sorting shelf 17 shown in FIGS. 8 and 9, the first chaff sheave portion 19a, the second chaff sheave portion 19b, the straw rack portion 20, and the grain sheave (sorting net) portion 21 are arranged on the swing shelf main body. It is configured so that it can be removed individually. In short, the swing shelf main body (shelf frame) is configured so that each of the above three members can be detached separately in the state of being set in the machine. Conventionally, since the entire swing sorting shelf 17 is removed, the weight is too heavy especially in a large machine, and it is difficult to work alone. Further, when the swing sorting shelf 17 was assembled, the method of setting the seal rubber of each part was bad, which was a factor of grain scattering loss and poor sorting. In this example, for example, the first chaff sheave (fixed sheave) portion 19a, the second chaff sheave (movable sheave) portion 19b, the straw rack portion 20, and the grain sheave portion 21 are respectively removed without removing the entire swing sorting shelf 17. Since it can be removed individually, it is easy to attach and detach, and the spiral bottom can be easily cleaned, and the above problems can be solved.

  Further, according to the above configuration, each sorting processing unit can be attached and detached without removing each seal of the swing shelf (first return shelf seal 51, pre-chaff sheave seal 52, swing shelf side seal, etc.) There will be no problems due to poor mounting position.

  The second chaff sheave (movable sheave) portion 19b and the straw rack portion 20 may be configured to be detachable independently. However, as shown in FIG. Shortens the attachment and detachment time and improves maintainability.

  It should be noted that the order of removing each sorting processing unit is preferably performed from the rear side.

DESCRIPTION OF SYMBOLS 3 Cutting part 4 Threshing part 12 Threshing feed chain 13 Handling chamber 14 Handling cylinder 17 Swing sorting shelf 18 Transfer shelf 28 Cutting clutch 29 1st clutch (threshing clutch)
30 Second clutch 33 Process amount detection sensor

Claims (4)

  A threshing section (4) that can move up and down to harvest planted cereals and a threshing part (4) that transports cereals supplied in the handling room (13) by a threshing feed chain (12) provided on one side ) And a swing sorting shelf (17) for swinging and sorting processed products after threshing, when the cutting part (3) rises to a predetermined non-cutting work height, the cutting part (3) and the threshing feed When the drive of the chain (12) and the swing sorting shelf (17) is automatically stopped and the cutting part (3) is lowered to a predetermined cutting height, the cutting part (3) and the threshing feed chain (12) are swung. A combine that is configured to automatically resume driving of the dynamic sorting shelf (17).   The threshing part (4) is provided with a processed product amount detection sensor (33) for detecting the amount of processed product after threshing, the reaping part rises to a non-cutting work height, and is detected by the processed product amount detection sensor (33). The driving of the threshing feed chain (12) and the swing sorting rack (17) is automatically stopped when the amount of processed product to be processed is smaller than a predetermined amount. Combine.   The combine according to claim 2, wherein the processing amount detection sensor (33) is a sensor for detecting a layer thickness of the processing product on the transfer shelf (18) in front of the swing sorting shelf (17).   A threshing clutch (29) is provided as a first clutch in the middle of the transmission path from the engine (E) provided in the airframe to the threshing section (4), and the swing sorting shelf (17) is provided on the lower transmission side of the threshing clutch (29). The combine according to any one of claims 1 to 3, wherein a second clutch (30) is provided in the middle of a path for transmitting the threshing feed chain (12).

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