JP2009039061A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester equipped with at least a screw type clean grain conveyor for clean grains after threshed and sorted, a screw type grain-elevating conveyor for elevating and transferring the grain from the clean grain conveyor to a grain tank, and a screw type discharge conveyor for discharging outside the grain in the grain tank, wherein cleaning of each conveyor by emptying the conveyors is made easy. <P>SOLUTION: Air nozzles 46, 48, 51 and 53 formed to eject compressed air in the grain transferring direction of screws are set at the starting end part of each of conveyors 27, 29 and 7. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a combine comprising various conveyors such as a first conveyor for transferring the first grain after threshing and sorting.

In general, in a combine, the first grain after threshing and sorting is transferred from the first conveyor to the cereal conveyor and transferred to the grain tank, while the second grain after the threshing and sorting is reduced from the second conveyor. It is well known that it is configured to transfer to the threshing sorter or processing cylinder by passing it to a conveyor, and to discharge the grain into the grain tank by a discharge conveyor. In the first conveyor and the second conveyor, a screw is provided in the lower half of the casing, and in other conveyors, a screw is provided in the cylindrical body (see Patent Document 1). ).
JP 2005-261279 A

  However, when the various conveyors in the combine are configured in the screw type as described above, the grain is not formed at the starting end of each conveyor and the joint part in each conveyor when the rotation of the screw is stopped. When there is a zone that cannot be transported and the combine operation is stopped, the kernel will remain in the zone, so the remaining kernel is emptied by scraping by hand. Therefore, there is a problem that it takes a lot of work to clean the various conveyors.

  This invention makes it a technical subject to eliminate the problem mentioned above, ie, the difficulty of the cleaning which empties various conveyors, when the various conveyors in a combine are comprised in a screw type.

In order to achieve this technical problem, claim 1 of the present invention provides:
“At least a screw-type first conveyor for the first grain after threshing and sorting, a screw-type lifting conveyor that transfers the grain from the first conveyor to the grain tank, and the grain tank In a combine comprising a screw-type discharge conveyor for discharging the grain inside
An air nozzle is provided at the starting end of each of the conveyors so that compressed air is ejected in the direction of grain transfer by a screw. "
It is characterized by that.

Claim 2 of the present invention includes:
“In the description of claim 1, the compressed air is ejected in the order of the first conveyor, the cereal conveyor, and the discharge conveyor.”
It is characterized by that.

Claim 3 of the present invention provides:
“In the description of claim 1, the screw-type second conveyor for the second grain after the threshing and selection, and the grain from the second conveyor are transferred to the combine to the threshing selection or processing cylinder. A screw-type reduction conveyor is provided, and an air nozzle is provided at the beginning of the second conveyor and the reduction conveyor so that compressed air is ejected in the direction of grain transfer by the screw. "
It is characterized by that.

Claim 4 of the present invention provides:
“In the third aspect of the present invention, the compressed air is ejected in the order of the second conveyor, the reduction conveyor, the first conveyor, the cereal conveyor, and the discharge conveyor.”
It is characterized by that.

Claim 5 of the present invention provides:
“In the description of any one of the first to fourth aspects, an air nozzle is provided at the grain discharge port of the discharge conveyor so that compressed air is ejected in the direction opposite to the grain transfer direction by the screw.”
It is characterized by that.

  According to the configuration described in claim 1, the grains at the starting end and the joint of the various conveyors can be blown away in the transfer direction of each conveyor by the compressed air ejected from the air nozzle provided at the starting end. When the rotation of the screw in each conveyor is stopped, it is possible to eliminate or reduce the amount of grain remaining at the starting end and the joint. Cleaning is easy without having to scrape by hand.

  In this case, the jet of compressed air to each conveyor is performed in the order of the first conveyor, the cereal conveyor, and the discharge conveyor as described in claim 2, so that the grains remaining on the first conveyor are compressed by the compressed air. The squirting is sent to the cereal conveyor, then the grains remaining on the cereal conveyor are sent to the grain tank by compressed air, and the grains remaining on the grain tank and the discharge conveyor are then ejected by compressed air. Thus, the cleaning for emptying the conveyors can be performed in order and reliably and quickly along the grain transfer path.

  Further, in addition to the first conveyor, the cereal conveyor, and the discharge conveyor, the screw type second conveyor for the second grain after the threshing and the grain from the second conveyor are separated into the combine. Alternatively, in the case where a screw-type reduction conveyor for transferring to the processing cylinder is provided, threshing can be achieved by providing an air nozzle for the second conveyor and the reduction conveyor as described in claim 3. The above-mentioned effect can be achieved after second processing the second grain.

  Also in this case, the compressed air is ejected to each conveyor in the order of the second conveyor, the reduction conveyor, the first conveyor, the cereal conveyor and the discharge conveyor as described in claim 4. Thus, as described above, the grains remaining on each conveyor can be sent out in order, so that the same effect as described above can be achieved.

  In particular, in the case of the configuration according to claim 5, the grain remaining in the vicinity of the grain outlet of the discharge conveyor is discharged by the reverse jet of compressed air to the grain outlet. Since it can be returned to the inside, it is possible to reliably prevent the grains remaining in the vicinity of the grain outlet from falling off and disappearing so as to be scattered on the road when the combine is traveling on the road. There is.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings showing a combine for cutting four strands.

  The four-row harvesting combine includes a traveling machine body 1 supported by a pair of left and right traveling crawlers 2. At the front of the traveling machine body 1, a pre-cutting processing device 3 that takes in a planted cereal culm (uncut cereal culm) in the field is mounted so as to be adjustable up and down by a single-acting hydraulic cylinder (not shown).

  A threshing device 4 with a feed chain 5 and a grain tank 6 for storing grain after threshing are mounted side by side on the traveling machine body 1. In this case, the threshing device 4 is arranged on the left side in the traveling direction of the traveling machine body 1, and the grain tank 6 is arranged on the right side in the traveling direction of the traveling machine body 1. A discharge conveyor 7 having a grain discharge port 8 at the tip is provided at the rear part of the traveling machine body 1 so as to be turnable in the horizontal direction. The grain in the grain tank 6 is discharged from the grain outlet 8 at the tip of the discharge conveyor 7 to, for example, a truck bed or a container.

  A control unit 9 is provided between the pre-harvest processing device 3 and the grain tank 6. A steering handle 10 for changing the traveling (turning) direction and turning speed of the traveling machine body 1, a control seat 11 on which an operator is seated, and the like are disposed in the control unit 9. A side column 12 disposed on one side of the control seat 11 is used for a power transmission operation to the main transmission lever 13 and the auxiliary transmission lever 14 for performing a shifting operation of the traveling machine body 1 and the pre-cutting processing device 3. A mowing clutch lever 15 and a threshing clutch lever 16 for power disconnection operation to the threshing device 4 are provided so as to tilt forward and backward.

  An engine 17 as a power source is disposed below the control unit 9. A transmission case 18 is disposed in front of the engine 17 for appropriately shifting the power from the engine 17 and transmitting it to the left and right traveling crawlers 2.

  The pre-cutting processing device 3 includes a clipper-type cutting blade device 19, a culm pulling device 20 for four strips, a culm conveying device 21, and a weed body 22. The corn straw transporting device 21 is disposed between the corn straw pulling device 20 and the feed start end of the feed chain 5. The weed body 22 is provided in front of the lower part of the grain raising device 20. The traveling machine body 1 continuously cuts the uncut grain culm on the field by driving the pre-cutting processing device 3 while driving the left and right traveling crawlers 2 with the engine 17 to move within the field.

  The threshing device 4 includes a handling cylinder 23 for threshing the harvested cereal, a swing sorting mechanism 24 and a wind sorting mechanism 25 arranged below the handling cylinder 23, and a threshing that is taken out from the rear part of the handling cylinder 23 And a dust-feed port processing cylinder 26 for reprocessing. The handling cylinder 23 is arranged in the handling chamber of the threshing device 4. The swing sorting mechanism 24 is for swinging and sorting the cereals threshed by the handling cylinder 23, and the wind sorting mechanism 25 is for wind sorting the cereals.

  The stock side of the harvested cereal meal sent from the pre-harvest processing device 3 is inherited by the feed chain 5. Then, the tip side of the harvested cereal culm is carried into the threshing device 4 and threshed by the handling cylinder 23. In addition, the rotating shaft of the handling cylinder 23 is extended along the feed direction (the advancing direction of the traveling machine body 1) of the harvested cereal meal by the feed chain 5.

  In the lower part of the threshing device 4, the first conveyor 27 for collecting the first grains such as fine grains among the grains selected by the two sorting mechanisms 24 and 25, the grain with a branch stem, the grain of ears, etc. A second conveyor 28 for collecting the second grain is provided. Each of the first conveyor 27 and the second conveyor 28 of the embodiment is configured such that a screw is provided inside the lower half of the casing and this screw is rotated, from the front side in the traveling direction of the traveling machine body 1. In the order of the first conveyor 27 and the second conveyor 28, they are horizontally arranged above the rear part of the traveling crawler 2 in a side view.

  The first grain such as fine grains collected in the first conveyor 27 through the sorting by the two sorting mechanisms 24 and 25 is transferred to the cereal conveyor 29 extending upward from the end of the first conveyor 27. It is sent to the grain tank 6 by the grain conveyor 29. The whipping conveyor 29 is configured such that a screw is provided inside a cylindrical body and the screw is rotated.

  A second grain such as a grain with a branch is collected on the second conveyor 28, passed to the reduction conveyor 30 from the end of the second conveyor 28, and sent to the second processing cylinder 31 on the reduction conveyor 30. . The second grain is threshed again by the second processing cylinder 31 and then returned to the threshing device 4 to be reselected. The sawdust is sucked into the dust exhaust fan 32 and discharged out of the machine from a discharge port (not shown) provided at the rear part of the threshing device 4. The reduction conveyor 30 has a configuration in which a screw is provided inside a cylindrical body and the screw is rotated.

  A waste chain 33 is disposed on the rear side (feed end side) of the feed chain 5. The waste (the grain that has been shattered) inherited from the rear end of the feed chain 5 to the waste chain 33 is discharged to the rear of the traveling machine body 1 in a long state, or the waste cutter 34 located behind the threshing device 4. After being cut to a short length as appropriate at, it is discharged to the rear of the traveling machine body 1.

  A bottom conveyor 35 for transferring the grains in the grain tank 6 to the discharge conveyor 7 is provided at the bottom of the grain tank 6, and the bottom conveyor 35 has a lower half. A screw is provided inside the body and the screw is rotated.

  On the other hand, the discharge conveyor 7 inherits the grain from the end of the bottom conveyor 35 and transfers it upward, and inherits the grain from the upper end of the first discharge conveyor 7a in the horizontal direction. The second and second discharge conveyors 7a and 7b are configured to rotate the screw by providing a screw inside the cylindrical body. The grain discharge port 8 is provided at the tip of the second discharge conveyor 7b.

  Next, the power transmission system of the combine will be described with reference to FIG.

  One of the power from the engine 17 is branched and transmitted in two directions, the pre-cutting processing device 3 and the threshing device 4. Other power from the engine 17 is transmitted to the discharge conveyor 7. The branching power from the engine 17 toward the pre-cutting processing device 3 is once transmitted to the HST input shaft 36 of the hydraulic pump hydraulic motor type (HST type) continuously variable transmission in the transmission case 18 via the cutting clutch 35. Shifted. This speed change output is transmitted from the cutting PTO shaft 37 protruding from the transmission case 18 to the cutting input shaft 38 of the cutting pretreatment device 3 via the pulley and the belt transmission system. Power is transmitted to the cutting blade device 19, each culm pulling device 20, and the culm conveying device 21 in the device 3.

  On the other hand, the branching power from the engine 17 toward the threshing device 4 is transmitted to the threshing input shaft 40 via the threshing clutch 39. A part of the power transmitted to the threshing input shaft 40 is transmitted to the rotating shaft 42 of the dust feed processing cylinder 26, the rotating shaft 43 of the handling cylinder 23, and the waste chain 33 via the threshing drive mechanism 41. The

  Further, from the threshing input shaft 40, the wind sorting mechanism 25, the first conveyor 27, the cereal conveyor 29, the second conveyor 28, the reduction conveyor 30, the second processing cylinder 31 are swung through a pulley and a belt transmission system. It is transmitted to the swing shaft 44 of the sorting mechanism 24, the dust exhaust fan 32, and the exhaust cutter 34.

  Furthermore, the power from the engine 17 is further branched and transmitted to the screws in the bottom conveyor 35 and the first and second discharge conveyors 7a and 7b via a belt transmission mechanism 58 having a discharge clutch 57. Is done.

  The power from the threshing input shaft 40 can be transmitted to the cutting input shaft 38 via the pouring clutch 45. That is, by directly transmitting the power from the engine 17 to the pre-cutting device 3 without going through the mission case 18, the pre-cutting device 3 is forcibly driven at a constant high speed regardless of whether the vehicle speed is high or low. It has a configuration that can be made to.

  Air nozzles 46, 47, 48, 49, 50 in which compressed air is jetted in the transfer direction by the screw are respectively applied to the start ends of the conveyors 27, 28, 29, 30, 35, 7 a, 7 b. , 51 and 52, the grain discharge port 8 of the second discharge conveyor 7b is provided with an air nozzle 53 for injecting compressed air in a direction opposite to the direction of transfer by the screw. The compressed air compressed by the compressor 54 driven by the engine 17 is transferred to 46, 47, 48, 49, 50, 51, 52 by the switching valve 56 controlled by the cleaning controller 55 as follows. It is configured to supply as described.

  That is, the cleaning controller 55 stops the jet of compressed air from the air nozzles 46, 47, 48, 49, 50, 51, 52 during the threshing operation, but stops the threshing operation. At this time, when the discharge of the grain in the grain tank 6 by the discharge conveyor 7 is completed, a cleaning mode is entered in which the various conveyors 27, 28, 29, 30, 35, 7a, 7b are emptied.

  When entering the cleaning mode, the cleaning controller 55 firstly rotates the threshing device 4 and the screws in the various conveyors 27, 28, 29, 30, 35, 7a, and 7b. Compressed air is ejected to the second conveyor 28 among the conveyors.

  As a result, the second grain in the second conveyor 28 is sent to the reduction conveyor 30 by the rotation of the screw and the ejection of compressed air in the second conveyor 28, so that the reduction conveyor is simultaneously or after the above. The second grain in the second conveyor 28 and the reduction conveyor 30 is sent to the second processing drum 31 for second processing, while the second conveyor 28 and The reduction conveyor 30 becomes empty after a lapse of time as appropriate.

  Since the first grain processed second in the second processing cylinder 31 enters the first conveyor 27 among the conveyors, the cleaning controller 55 next selects the second conveyor 28 and the reduction conveyor 30. After stopping the jet of compressed air, the compressed air is jetted onto the first conveyor 27.

  As a result, the first grain in the first conveyor 27 is sent to the whipping conveyor 29 by the rotation of the screw and the ejection of compressed air. By ejecting compressed air, the first grain in the first conveyor 27 and the cereal conveyor 29 is sent to the grain tank 6 by the rotation of the screw and the ejection of compressed air, while the first conveyor 27 And the cereal conveyor 29 will be in an empty state over time. In this state, the threshing clutch 39 for the threshing device 4 or the like is turned off.

  Next, the cleaning controller 55 stops the compressed air from being ejected to the first conveyor 27 and the cereal conveyor 29 and then ejects compressed air to the bottom conveyor 35 in the grain tank 6.

  Thereby, the grains accumulated at the bottom in the grain tank 6 are sent to the discharge conveyor 7 by the rotation of the screw in the bottom conveyor 35 and the ejection of compressed air, and the grain tank 6 is appropriately timed. After that, it becomes empty.

  Therefore, the cleaning controller 55 ejects compressed air to the first discharge conveyor 7a and the second discharge conveyor 7b in the discharge conveyor 7 simultaneously with or next to the above. Thereby, the grains in the first discharge conveyor 7a and the second discharge conveyor 7b are discharged from the grain discharge port 8 to, for example, a truck bed or a container by the rotation of the screw and the jet of compressed air, while the first discharge conveyor 7a and the second discharge conveyor 7b. The 1 discharge conveyor 7a and the 2nd discharge conveyor 7b will be in an empty state suitably after passage of time.

  In such an empty state, the rotational drive of the screws in the bottom conveyor 35, the first discharge conveyor 7a and the second discharge conveyor 7b is stopped when the discharge clutch 57 is turned off, and the compressed air to these is stopped. Stop spraying.

  Next, the cleaning controller 55 ejects compressed air in the reverse direction to the grain outlet 8 in the second discharge conveyor 7 b of the discharge conveyor 7.

  As a result, the grains remaining in the vicinity of the grain outlet 8 in the second outlet conveyor 7b are ejected in the reverse direction of the compressed air to the grain outlet 8 in the second outlet conveyor 7b. Since it is possible to return to the back, it is possible to reliably prevent the grains remaining in the vicinity of the grain outlet 8 from spilling and disappearing so as to be scattered on the road when the combine is traveling on the road. .

It is a side view of a combine. It is a top view of a combine. It is a figure which shows the path | route of the power transmission in a combine, and various conveyors. It is a figure which shows the cleaning control with respect to various conveyors.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling machine body 2 Crawler 3 Processing device before cutting 4 Threshing device 5 Feed chain 6 Grain tank 17 Engine 23 Handling cylinder 31 Second processing cylinder 27 First conveyor 28 Second conveyor 29 Grain conveyor 30 Reduction conveyor 35 Bottom conveyor 39 Threshing Clutch 7 Discharge conveyor 7a 1st discharge conveyor 7b 2nd discharge conveyor 46-53 Air nozzle 54 Compressor 55 Cleaning condroller 56 Switching valve 57 Discharge clutch

Claims (5)

At least a screw-type first conveyor for the first grain after threshing and selection, a screw-type lifting conveyor for transferring the grain from the first conveyor to the grain tank, and the inside of the grain tank In a combine comprising a screw-type discharge conveyor for discharging the grain of
The combine characterized by providing the air nozzle which jets compressed air in the transfer direction of the grain by a screw in the starting end part in each said conveyor.   The combine according to claim 1, wherein the compressed air is ejected in the order of the first conveyor, the cereal conveyor and the discharge conveyor.   The screw according to claim 1, further comprising: a screw-type second conveyor for the second grain after threshing and selection, and a screw for transferring the grain from the second conveyor to the threshing selection or processing cylinder. This type of combiner is provided with an air nozzle adapted to eject compressed air in the direction of grain transfer by a screw at the beginning of the second conveyor and the conveyor.   The combine according to claim 3, wherein compressed air is ejected in the order of second conveyor, reduction conveyor, first conveyor, cereal conveyor and discharge conveyor.   In any one of the said Claims 1-4, the air nozzle which jets compressed air in the direction opposite to the transfer direction of the grain by a screw in the grain discharge port in the said discharge conveyor is provided, It is characterized by the above-mentioned. Combine to do.

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