JP2011155907A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester for accurately driving a front processing unit during travel at a low reaping speed, and preventing the conveying disturbance of grain stalks. <P>SOLUTION: In the combine harvester including reaping-driving means (51) for driving a reaping portion (5) at variable speed and a controller (64) for controlling the reaping-driving means (51) and having the controller (64) provided with vehicle-speed-associated driving means (B, C) for controlling the reaping-driving means (51) in association with vehicle speed, the controller (64) includes constant-speed driving means (A) for controlling the reaping portion (5) so as to drive at low speed (V1) irrespective of the traveling speed of a travelling machine body, and a driving operation portion (8) includes a switching operation device (30) for switching driving from the vehicle-speed-associated driving means (B, C) to the constant-speed driving means (A), so that the constant-speed driving means (A) switches the reaping portion (5) to the low-speed (V1) driving on the basis of the ON operation by the switching operation device (30), and gradually accelerates the reaping portion (5) when the ON state is kept. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、穀稈を刈取搬送する刈取部を備えたコンバインに関する。   The present invention relates to a combine equipped with a harvesting unit that harvests and conveys corn straw.

従来、前処理部の搬送駆動を機体の走行速度に連動させて、機体が走行停止した時は前処理部を駆動停止させると共に、走行速度が速くなれば前処理部の駆動速度を速くするように、前処理部を車速同調駆動させた特許文献１に示すコンバインが公知となっている。このものによると、刈取走行速度の大小に関係なく前処理部で搬送される穀稈の層厚が一定となるから、安定した搬送性能を維持することができる。
また、特許文献１のコンバインは、刈取走行速度に関係なく前処理部を一定速度で駆動する強制掻き込み機能を備えており、機体が停止した状態でも前処理部を駆動可能としているから、機体が停止した状態で前処理部に残った穀稈を脱穀部へ搬送して処理が可能となり、回行時における前処理部での稈こぼれを防止することができる。
また、強制掻き込み機能を備えているため、トランスミッション回転センサ（車速センサ）が低速回転を正確に検出できず、機体が低速（超低速）走行しているにも関わらず機体停止と判定して前処理部が駆動しない場合にも、強制的に前処理部を駆動させて刈取作業を行うことが可能であり便利である。 Conventionally, the transport drive of the pre-processing unit is linked to the traveling speed of the aircraft, and when the aircraft stops traveling, the pre-processing unit is stopped and the driving speed of the pre-processing unit is increased when the traveling speed increases. Further, a combine shown in Patent Document 1 in which the preprocessing unit is driven in synchronization with the vehicle speed is known. According to this, since the layer thickness of the cereal straw conveyed by the pre-processing unit is constant regardless of the cutting travel speed, stable conveyance performance can be maintained.
Further, the combine of Patent Document 1 has a forced scraping function that drives the preprocessing unit at a constant speed regardless of the cutting travel speed, and the preprocessing unit can be driven even when the aircraft is stopped. The cereals remaining in the pre-processing unit in a state where the cereal is stopped can be conveyed to the threshing unit for processing, and spillage in the pre-processing unit during turning can be prevented.
In addition, because it has a forced scraping function, the transmission rotation sensor (vehicle speed sensor) cannot accurately detect low-speed rotation, and it is determined that the aircraft has stopped despite the aircraft running at low speed (very low speed). Even when the pre-processing unit is not driven, it is possible to drive the pre-processing unit forcibly and perform a cutting operation, which is convenient.

特許第３８５３２１６号公報Japanese Patent No. 3853216

特許文献１のコンバインは、例えば、最初に畦を乗り越えて穀稈の刈取を行いながら圃場に侵入する際に低速（超低速）で機体を走行させた場合でも、強制掻き込み機能で前処理部を強制的に駆動させることができるから、前処理部が駆動停止したまま機体を走行させて穀稈を押し倒すことを防止できる。しかしながら、強制掻き込み機能は、稈こぼれを防止するために走行停止状態で前処理部に残った穀稈を強制的に脱穀部へ搬送処理するための機能であり、その作業能率を上げる為に強制掻き込み時における前処理部の駆動速度を早め（中速）に設定している。即ち、圃場侵入時に前処理部を駆動させることを用途に考慮しておらず、走行速度（超低速）に対して前処理部の搬送速度が速すぎて穀稈の搬送姿勢が乱れて脱穀性能が悪くなったり搬送が詰まる課題があった。
本発明は、低速刈取走行時において前処理部を確実に駆動できると共に、穀稈の搬送乱れを防止できるコンバインを提供することを課題とする。 The combine of patent document 1 is a pre-processing part with a forced scratching function, for example, even when the body is run at a low speed (ultra-low speed) when entering the field while first harvesting the culm by overcoming the culm Can be forcibly driven, so that it is possible to prevent the cereals from being pushed down by running the airframe while the pre-processing unit stops driving. However, the forced scraping function is a function for forcibly transporting the cereal remaining in the pretreatment section to the threshing section in a traveling stop state in order to prevent spillage, and to increase its work efficiency. The driving speed of the pre-processing unit at the time of forced scratching is set to be faster (medium speed). That is, it does not consider driving the pretreatment unit when entering the field, and the carrying speed of the pretreatment unit is too high with respect to the traveling speed (ultra low speed), and the posture of the cereals is disturbed and the threshing performance There was a problem of getting worse or clogging the conveyance.
This invention makes it a subject to provide the combine which can drive the pre-processing part reliably at the time of low-speed cutting and can prevent the conveyance disorder of the cereal.

本発明は、前記の如き実情に鑑みこれらの課題を解決することを目的として創作されたものであって、機体の走行速度を検出する車速センサと、刈取部を変速駆動する刈取駆動手段と、刈取駆動手段の変速駆動を制御する制御装置とを設け、前記制御装置に、車速センサで検出した車速に連動させて、機体が走行停止した時は刈取部を駆動停止させると共に、走行速度が速くなれば刈取部の駆動速度を速くするように、前記刈取駆動手段を制御する車速連動駆動手段を設けたコンバインにおいて、前記制御装置に、機体の走行速度の大小に関係なく刈取部を低速で駆動するように、前記刈取駆動手段を制御する定速駆動手段を設けると共に、車速連動駆動手段から定速駆動手段への駆動切換を行う切換操作具を機体の運転操作部に設け、前記定速駆動手段は、切換操作具のＯＮ操作に基づき刈取部を低速駆動に切り換えると共に、前記切換操作具のＯＮ状態が維持されると、刈取部を次第に増速するように構成したことを特徴とする。
また、前記定速駆動手段は、前記切換操作具のＯＮ状態が維持されると、所定時間は刈取部の低速駆動を保持し、所定時間を経過すると刈取部を増速するように構成したことを特徴とする。
また、前記定速駆動手段は、刈取部の低速駆動時に切換操作具をＯＦＦ操作しても、一定時間は低速駆動を保持するように構成したことを特徴とする。 The present invention was created for the purpose of solving these problems in view of the above circumstances, a vehicle speed sensor for detecting the traveling speed of the airframe, a cutting drive means for driving the cutting unit at a variable speed, And a control device for controlling the speed change drive of the cutting drive means. The control device is linked to the vehicle speed detected by the vehicle speed sensor, and when the vehicle stops traveling, the cutting unit is stopped and the traveling speed is increased. In a combine provided with vehicle speed interlocking driving means for controlling the cutting drive means so as to increase the driving speed of the cutting part, the controller drives the cutting part at a low speed regardless of the travel speed of the aircraft. As described above, a constant speed drive means for controlling the cutting drive means is provided, and a switching operation tool for switching the drive from the vehicle speed interlocking drive means to the constant speed drive means is provided in the driving operation portion of the airframe, The speed driving means is configured to switch the cutting unit to low speed driving based on the ON operation of the switching operation tool, and to increase the speed of the cutting unit gradually when the ON state of the switching operation tool is maintained. To do.
Further, the constant speed driving means is configured to maintain the low speed driving of the cutting unit for a predetermined time when the switching operation tool is maintained in an ON state, and to increase the speed of the cutting unit after a predetermined time has elapsed. It is characterized by.
Further, the constant speed driving means is characterized in that the low speed driving is maintained for a certain time even if the switching operation tool is turned OFF during the low speed driving of the cutting unit.

以上のように構成される本発明のコンバインによれば、機体の走行速度に関係なく刈取部を低速で駆動する定速駆動手段を設けたから、低速刈取走行時に刈取部を確実に駆動して穀稈の押し倒しを防止できると共に、搬送乱れを防止できる。また、運転操作部に設けた切換操作具をＯＮ操作するだけで刈取部を低速駆動に切り換えることができるから操作性が良い。また、切換操作具のＯＮ状態を維持すると刈取部が自動的に増速するように構成したから、例えば、機体が停止した状態で刈取部に残った穀稈を脱穀部へ搬送して処理する場合にも作業能率を向上させることができる。
また、切換操作具のＯＮ状態を維持すると、所定時間は刈取部の低速駆動を保持し、所定時間が経過すると刈取部を増速するように構成したから、刈取部の低速駆動が安定して穀稈の搬送も安定する。
また、刈取部が低速駆動時に切換操作具をＯＦＦ操作しても、一定時間は低速駆動を保持するように構成したから、切換操作具でＯＮとＯＦＦを交互繰り返す操作を行えば刈取部を低速駆動状態で維持することができる。 According to the combine of the present invention configured as described above, the constant speed driving means for driving the cutting unit at a low speed regardless of the traveling speed of the airframe is provided. It is possible to prevent the bag from being pushed down and to prevent conveyance disturbance. In addition, the operability is good because the cutting unit can be switched to low-speed driving simply by turning on the switching operation tool provided in the driving operation unit. Moreover, since it was comprised so that a cutting part may accelerate automatically if the ON state of a switching operation tool was maintained, for example, the cereal residue which remained in the cutting part in the state which the airframe stopped is conveyed and processed. Even in this case, work efficiency can be improved.
In addition, if the switching operation tool is maintained in the ON state, the low speed drive of the mowing unit is maintained for a predetermined time and the mowing unit is accelerated after the predetermined time has elapsed. Grain transfer is also stable.
In addition, even if the switching unit is turned off at low speeds, even if the switching operation tool is turned OFF, the low speed driving is maintained for a certain period of time. It can be maintained in the driving state.

コンバインの左側面図である。It is a left view of a combine. コンバインの平面図である。It is a top view of a combine. 主変速レバーの把持部を示す右前斜視図である。It is a front right perspective view which shows the holding part of the main transmission lever. コンバインの伝動系統図である。It is a transmission system diagram of a combine. 制御装置の構成を示すブロック図である。It is a block diagram which shows the structure of a control apparatus. 搬送ＨＳＴ制御のフローチャート図である。It is a flowchart figure of conveyance HST control. 搬送速度と走行速度との関係を示すグラフである。It is a graph which shows the relationship between a conveyance speed and driving speed. 強制掻込モードにおける強制掻込スイッチ操作と搬送ＨＳＴ駆動速度との関係を示すタイムチャート図である。It is a time chart which shows the relationship between forced take-in switch operation and conveyance HST drive speed in forced take-in mode. 同上別実施形態を示すタイムチャート図である。It is a time chart figure which shows another embodiment same as the above.

本発明の実施形態を図面に基づいて説明する。
図１はコンバインの左側面図、図２はコンバインの平面図であり、コンバイン１は左右のクローラ２を備えた走行装置３を設け、該走行装置３で支持された機体フレーム４上には、その前部に穀稈の刈取及び搬送を行う刈取部５、該刈取部５の後方で刈取部５から搬送された穀稈を受継ぎ搬送しながら脱穀選別を行う脱穀装置６、該脱穀装置６の後方で脱穀装置６から搬送された脱穀済みの排稈を切断して排出する後処理部７が設けられると共に、前記刈取部５の右側方にはコンバインの運転操作を行う運転操作部８、該運転操作部８の後方で脱穀装置６の右側方には籾処理部９が設けられている。 Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a left side view of the combine, and FIG. 2 is a plan view of the combine. The combine 1 is provided with a traveling device 3 having left and right crawlers 2, and on the body frame 4 supported by the traveling device 3, A reaping unit 5 that harvests and conveys cereals at the front part thereof, a threshing device 6 that performs threshing selection while inheriting and conveying the cereals conveyed from the reaping unit 5 behind the reaping unit 5, and the threshing device 6 Is provided with a post-processing unit 7 that cuts and discharges the threshed waste that has been conveyed from the threshing device 6 at the rear of the chopping unit 5, and a driving operation unit 8 that performs a driving operation of the combine on the right side of the cutting unit 5 A cocoon processing unit 9 is provided behind the driving operation unit 8 and on the right side of the threshing device 6.

前記刈取部５は、機体フレーム４の前部に昇降自在に支持されており、植立穀稈を分草するデバイダ１１、デバイダ１１で分草された穀稈を引起す引起装置１２、引起された穀稈の株元を切断する刈刃１３、切断された穀稈を掻き込みながら搬送する穀稈搬送装置１４および、穀稈を扱深調節しながら搬送する扱深搬送装置１５等から構成されている。   The cutting unit 5 is supported by the front part of the machine body frame 4 so as to be able to move up and down, and a divider 11 for weeding the planted culm and a pulling device 12 for raising the corn that has been weeded by the divider 11 are raised. A cutting blade 13 that cuts the stock of the cereal, a cereal conveyance device 14 that conveys the cut cereal while scraping, a handling depth conveyance device 15 that conveys the cereal while adjusting the handling depth, and the like. ing.

前記脱穀装置６は、刈取部５から搬送された穀稈の株元を挟持搬送する脱穀フィードチェーン１６、該脱穀フィードチェーン１６で搬送される穀稈を脱穀処理する扱胴や受網等を内装した脱穀部１７、受網から落下する脱穀物を揺動選別体の篩選別と送風ファンの風選別によって穀粒と藁屑とに選別処理する選別部１８、脱穀部１７で脱穀処理された排稈を搬送する排藁搬送部１９等から構成されている。   The threshing device 6 includes a threshing feed chain 16 for holding and transporting the culm stock conveyed from the cutting unit 5, a handling cylinder and a receiving net for threshing the cereals conveyed by the threshing feed chain 16. Threshing section 17, threshing falling from the receiving net, sorting section 18 that sorts cereals into grains and swarf by sieving screening of a swinging sorter and wind sorting by a blower fan, and threshing processed by threshing section 17 It is comprised from the waste conveying part 19 etc. which convey a soot.

前記籾処理部９は、脱穀装置６で脱穀選別された穀粒を一時的に貯留するグレンタンク２０、該グレンタンク２０内の穀粒を機外に排出する排出オーガ２１等で構成されている。   The koji processing unit 9 includes a grain tank 20 that temporarily stores grains threshed and selected by the threshing device 6, a discharge auger 21 that discharges the grains in the grain tank 20 to the outside of the machine, and the like. .

前記運転操作部８は、エンジン３２を収容するエンジンカバー２２の上方に設けられた座席シート２３、該座席シート２３の前方、左側方及び、後方に設けられた操作パネル２４等から構成され、該操作パネル２４には刈取部５の昇降及び機体の左右旋回操作を行う操作レバー２５（マルチステアリングレバー）、機体の前後進の切換や走行変速操作を行う主変速レバー２６及び、刈取クラッチ５７と作業機クラッチ４８（脱穀クラッチ）の入切操作を行う刈脱スイッチ２７（刈脱クラッチ操作具）等から構成されている。   The driving operation unit 8 includes a seat seat 23 provided above an engine cover 22 that accommodates the engine 32, an operation panel 24 provided on the front, left side, and rear of the seat seat 23, and the like. The operation panel 24 includes an operation lever 25 (multi-steering lever) for raising and lowering the cutting unit 5 and a left-right turning operation of the machine body, a main transmission lever 26 for performing forward / reverse switching of the machine body and a traveling speed change operation, and a cutting clutch 57. The cutting / removing switch 27 (cutting / clipping / clutch operating tool) for performing on / off operation of the machine clutch 48 (threshing / clutch) is configured.

図３は前記主変速レバーの把持部を示す右前斜視図である。
把持部２７の前面には扱深搬送装置１５の扱深さを手動操作によって任意に変更することができる浅扱スイッチ２８及び深扱スイッチ２９、把持部２７の右側面には刈取部５の駆動切換を行う強制掻込スイッチ３０（切換操作具）、把持部２７の背面には同じく刈取部５の駆動切換を行う倒伏スイッチ３１が設けられている。前記強制掻込スイッチ３０はモーメンタリスイッチで構成され、ＯＮ操作している間は刈取部５の駆動モードが強制掻込モードＡ（図７参照）となり、離すと強制掻込モードＡが解除されて標準モードＢ（図７参照）又は倒伏モードＣ（図７参照）となる。また、倒伏スイッチ３１はオルタネイトスイッチで構成され、ＯＮ操作すると刈取部５の駆動モードが倒伏モードＣに切り換わり、ＯＦＦ操作すると標準モードＢに切り換わる。 FIG. 3 is a right front perspective view showing a grip portion of the main transmission lever.
A shallow handling switch 28 and a depth handling switch 29 that can arbitrarily change the handling depth of the handling depth conveying device 15 by manual operation are provided on the front surface of the gripping unit 27, and the cutting unit 5 is driven on the right side surface of the gripping unit 27. A forced take-in switch 30 (switching operation tool) that performs switching, and an inversion switch 31 that switches the driving of the cutting unit 5 are provided on the back surface of the gripping unit 27. The forced take-up switch 30 is composed of a momentary switch, and the drive mode of the cutting unit 5 is set to the forced take-up mode A (see FIG. 7) while the ON operation is performed, and the forced take-up mode A is released when released. The standard mode B (see FIG. 7) or the lodging mode C (see FIG. 7) is set. Further, the lodging switch 31 is composed of an alternate switch, and when the ON operation is performed, the driving mode of the cutting unit 5 is switched to the lodging mode C, and when the OFF operation is performed, the driving mode is switched to the standard mode B.

図４はコンバインの伝動系統図である。
エンジン３２で出力された動力は、出力プーリ３３〜３５を介して走行装置３、刈取部５、脱穀装置６、籾処理部９、後処理部７へと伝動される。
出力プーリ３３から伝動ベルト３６，３７やべベル機構３８を介して籾処理部９へ動力が伝動される。３９は伝動ベルトを弛緩させることで動力を切り、緊張させることで動力を繋ぐベルトテンションクラッチである排出クラッチであり、運転操作部８の排出スイッチ４０により入切操作されると電動モータの駆動により入切作動する。 FIG. 4 is a transmission system diagram of the combine.
The power output from the engine 32 is transmitted to the traveling device 3, the mowing unit 5, the threshing device 6, the cocoon processing unit 9, and the post-processing unit 7 through the output pulleys 33 to 35.
Power is transmitted from the output pulley 33 to the saddle processing unit 9 through the transmission belts 36 and 37 and the bevel mechanism 38. 39 is a discharge clutch that is a belt tension clutch that turns off the power by loosening the transmission belt and connects the power by tightening it. When it is turned on and off by the discharge switch 40 of the driving operation unit 8, it is driven by the electric motor. Turns on and off.

出力プーリ３４から伝動ベルト４１を介して走行装置３の入力プーリ４２へ動力が伝動される。４３はベルトテンションクラッチである走行クラッチであり、運転操作部８の足元に配置されたべダル操作により入切操作される。走行装置３へ入力された動力は走行ＨＳＴ４４を介して変速され、変速された動力が走行トランスミッション４５内の副変速装置やサイドクラッチを介して左右のクローラ２へ伝動される。   Power is transmitted from the output pulley 34 to the input pulley 42 of the traveling device 3 via the transmission belt 41. A traveling clutch 43 is a belt tension clutch and is turned on and off by a pedal operation arranged at the foot of the driving operation unit 8. The power input to the travel device 3 is shifted via the travel HST 44, and the shifted power is transmitted to the left and right crawlers 2 via the auxiliary transmission and the side clutch in the travel transmission 45.

出力プーリ３５から伝動ベルト４６を介して唐箕軸４７へ動力が伝動される。唐箕軸４７はカウンター軸を兼ねており、該唐箕軸４７から刈取部５、脱穀部１７、排藁搬送部１９、選別部１８、後処理部７へと伝動される。４８はベルトテンションクラッチである作業機クラッチであり、運転操作部８の刈脱スイッチ２７により入切操作されると電動モータの駆動により入切作動する。   Power is transmitted from the output pulley 35 to the tang shaft 47 via the transmission belt 46. The red pepper shaft 47 also serves as a counter shaft, and is transmitted from the red pepper shaft 47 to the cutting unit 5, the threshing unit 17, the waste transporting unit 19, the sorting unit 18, and the post-processing unit 7. Reference numeral 48 denotes a work machine clutch which is a belt tension clutch.

出力プーリ４９から伝動ベルト５０を介して搬送ＨＳＴ５１（刈取駆動手段）の入力プーリ５２へ動力が伝動される。搬送ＨＳＴ５１で変速された動力はギアケース５３を介して脱穀フィードチェーン１６と刈取部５へ伝動される。出力プーリ５４から伝動ベルト５５を介して刈取部５の入力プーリ５６へ伝動される。５７はベルトテンションクラッチである刈取クラッチであり、運転操作部８の刈脱スイッチ２７により入切操作されると電動モータの駆動により入切作動する。前記搬送ＨＳＴ５１を変速操作することにより、刈取部５の駆動速度（搬送速度）及び脱穀フィードチェーン１６の搬送速度を一緒に変速させたり、停止させたりすることができる。   Power is transmitted from the output pulley 49 to the input pulley 52 of the transport HST 51 (cutting drive means) through the transmission belt 50. The power shifted by the transport HST 51 is transmitted to the threshing feed chain 16 and the cutting unit 5 through the gear case 53. It is transmitted from the output pulley 54 to the input pulley 56 of the cutting unit 5 through the transmission belt 55. A cutting clutch 57, which is a belt tension clutch, is turned on / off by driving of the electric motor when turned on / off by the cutting / removing switch 27 of the driving operation unit 8. By shifting the speed of the transport HST 51, the driving speed (transport speed) of the cutting unit 5 and the transport speed of the threshing feed chain 16 can be simultaneously shifted or stopped.

図５は制御装置の構成を示すブロック図である。
マイコン等で構成される制御部５８の入力側には、刈取部５の駆動切換を行う強制掻込スイッチ３０及び倒伏スイッチ３１、主変速レバーの操作位置を検出する主変速ポテンショメータ５９、走行トランスミッション４５内の伝動軸に設けられた走行回転センサ６０（車速センサ）及び、搬送ＨＳＴ５１のトラニオン軸の回動位置を検出する搬送ポテンショメータ６１が接続される。
また、出力側には、搬送ＨＳＴ５１のトラニオン軸を変速操作する搬送変速モータ６２及び、刈取駆動モードが倒伏モードＣ（図７参照）である時に点灯する倒伏ランプ６３が接続されている。
そして、これら搬送ポテンショメータ６１、制御部５８及び、搬送変速モータ６２等によって搬送ＨＳＴ５１（刈取駆動手段）の変速駆動を制御する制御装置６４を構成している。 FIG. 5 is a block diagram showing the configuration of the control device.
On the input side of the control unit 58 configured by a microcomputer or the like, a forced take-in switch 30 and a depression switch 31 for switching the driving of the cutting unit 5, a main transmission potentiometer 59 for detecting the operation position of the main transmission lever, and a traveling transmission 45. A travel rotation sensor 60 (vehicle speed sensor) provided on the inner transmission shaft and a transport potentiometer 61 for detecting the rotational position of the trunnion shaft of the transport HST 51 are connected.
Further, on the output side, there are connected a transport speed change motor 62 that shifts the trunnion shaft of the transport HST 51, and a lodging lamp 63 that lights up when the cutting drive mode is the lodging mode C (see FIG. 7).
A control device 64 that controls the shift drive of the transport HST 51 (cutting drive means) is configured by the transport potentiometer 61, the control unit 58, the transport speed change motor 62, and the like.

図６は搬送ＨＳＴ制御のフローチャート図である。
先ず、Ｓ１で走行回転センサ６０のデータを読み込み、Ｓ２で搬送ポテンショメータ６１のデータを読み込む。次に、Ｓ３で強制掻込スイッチ３０のＯＮ／ＯＦＦを判定し、ＯＮの場合はＳ４で車速連動速度と設定速度との比較を行う。尚、前記車速連動速度とは、現在の車速（Ｓ１）を基準に標準モードＢ（図７参照）で搬送ＨＳＴ５１を変速制御した場合における搬送ＨＳＴ５１の目標値のことであり、設定速度とは、強制掻込モードＡ（図７参照）で搬送ＨＳＴ５１を駆動させた場合における搬送ＨＳＴ５１の目標値のことである。
Ｓ４で車速連動速度（標準モード目標値）と設定速度（強制掻込モード目標値）とを比較して、車速連動速度が大の場合はＳ５で標準モードＢの目標値をを搬送ＨＳＴ制御の目標値に設定し、設定速度が大の場合はＳ６で強制掻込モードＡの目標値を搬送ＨＳＴ制御の目標値に設定する。よって、機体の走行速度が速い場合は標準モードＢから強制掻込モードＡへの移行を規制し、機体が高速で走行している時に刈取部が強制掻込モードで遅く駆動されて搬送が詰まることを防止できる。 FIG. 6 is a flowchart of the transport HST control.
First, the data of the traveling rotation sensor 60 is read in S1, and the data of the transport potentiometer 61 is read in S2. Next, it is determined whether or not the forced take-in switch 30 is ON / OFF in S3, and if it is ON, the vehicle speed interlocking speed is compared with the set speed in S4. The vehicle speed interlocking speed is a target value of the transport HST 51 when the transport HST 51 is shift-controlled in the standard mode B (see FIG. 7) based on the current vehicle speed (S1), and the set speed is This is a target value of the transport HST 51 when the transport HST 51 is driven in the forced scraping mode A (see FIG. 7).
In S4, the vehicle speed interlocking speed (standard mode target value) is compared with the set speed (forced scraping mode target value). If the vehicle speed interlocking speed is high, the target value of standard mode B is transferred in S5 for the transport HST control. If the set speed is high, the target value in the forced scratch mode A is set as the target value for the transport HST control in S6. Therefore, when the machine speed is high, the transition from the standard mode B to the forced take-up mode A is restricted, and when the machine is running at a high speed, the cutting unit is driven slowly in the forced take-up mode and the conveyance is clogged. Can be prevented.

Ｓ３で強制掻込スイッチ３０がＯＦＦの場合はＳ７で主変速ポテンショメータ５９が前進位置か、前進以外（停止／後進）かを判定する。Ｓ７で主変速ポテンショメータ５９が前進以外の場合はＳ８で搬送ＨＳＴ制御の目標値をゼロ（搬送停止）とする。Ｓ７で主変速ポテンショメータ５９が前進位置と判定した場合はＳ９で倒伏スイッチ３１のＯＮ／ＯＦＦを判定する。Ｓ９で倒伏スイッチ３１がＯＦＦと判定した場合は、Ｓ１０で標準モードＢの目標値を搬送ＨＳＴ制御の目標値に設定し、ＯＮと判定した場合は、Ｓ１１で倒伏モードＣ（図７参照）の目標値を搬送ＨＳＴ制御の目標値に設定する。
Ｓ１２ではＳ５，Ｓ６，Ｓ８，Ｓ１０，Ｓ１１の何れかで設定された目標値に基づいて搬送変速モータ６２が出力制御されて、搬送ＨＳＴ５１が変速制御される。 If the forced take-in switch 30 is OFF in S3, it is determined in S7 whether the main transmission potentiometer 59 is in the forward position or other than forward (stop / reverse). If the main shift potentiometer 59 is other than forward in S7, the target value of the transport HST control is set to zero (transport stop) in S8. If it is determined in S7 that the main transmission potentiometer 59 is in the forward movement position, it is determined in S9 whether the lodging switch 31 is ON / OFF. If it is determined in S9 that the lodging switch 31 is OFF, the target value of the standard mode B is set to the target value of the transport HST control in S10, and if it is determined to be ON, the lodging mode C (see FIG. 7) is determined in S11. The target value is set as the target value for the transport HST control.
In S12, the conveyance speed change motor 62 is output-controlled based on the target value set in any one of S5, S6, S8, S10, and S11, and the conveyance HST 51 is subjected to speed change control.

図７は搬送速度と走行速度との関係を示すグラフである。
縦軸は搬送ＨＳＴ５１の駆動速度（搬送ポテンショメータ６１）、横軸は機体の走行速度（走行回転センサ６０）を示す。搬送ＨＳＴ５１の駆動速度が速くなると、それに伴って刈取部５の搬送速度及び脱穀フィードチェーン１６の搬送速度も速くなる。 FIG. 7 is a graph showing the relationship between the conveyance speed and the traveling speed.
The vertical axis represents the driving speed of the transport HST 51 (conveyance potentiometer 61), and the horizontal axis represents the traveling speed of the airframe (traveling rotation sensor 60). As the driving speed of the transport HST 51 increases, the transport speed of the cutting unit 5 and the transport speed of the threshing feed chain 16 also increase accordingly.

強制掻込スイッチ３０及び倒伏スイッチ３１の両者がＯＦＦの場合は標準モードＢ（車速連動駆動手段）となり、搬送ＨＳＴ５１の駆動速度を車速に連動させて、機体が走行停止した時は刈取部５を駆動停止させると共に、走行速度が速くなれば刈取部５の駆動速度を速くするように搬送ＨＳＴ５１が制御される。本実施形態では車速が速くなるにつれて搬送ＨＳＴ５１の駆動速度も比例して速くなるように構成している。
また、強制掻込スイッチ３０がＯＦＦで倒伏スイッチ３１がＯＮの場合は倒伏モードＣ（車速連動駆動手段）となり、前述した標準モードＢと同様に搬送ＨＳＴ５１の駆動速度を車速に連動させて制御を行うが、倒伏モードＣは標準モードＢより車速に対する搬送ＨＳＴ５１の駆動速度を増速させて制御するように構成している。これにより刈取部５の搬送速度がアップして倒伏した穀稈をスムーズに刈り取ることができる。
また、強制掻込スイッチ３０がＯＮの場合は、強制掻込モード（定速駆動手段）Ａとなり、機体の走行状態に関係なく搬送ＨＳＴ５１を設定された駆動速度で駆動する。 When both the forced take-in switch 30 and the lodging switch 31 are OFF, the standard mode B (vehicle speed interlocking drive means) is selected, and when the airframe stops traveling by interlocking the driving speed of the transport HST 51 with the vehicle speed, the cutting unit 5 is moved. The transport HST 51 is controlled so that the driving speed of the cutting unit 5 is increased when the driving speed is increased and the driving speed is increased. In the present embodiment, the driving speed of the transport HST 51 is proportionally increased as the vehicle speed increases.
Further, when the forced take-in switch 30 is OFF and the lodging switch 31 is ON, the lodging mode C (vehicle speed interlocking driving means) is set, and the control is performed by interlocking the driving speed of the transport HST 51 with the vehicle speed as in the standard mode B described above. However, the lodging mode C is configured to be controlled by increasing the driving speed of the transport HST 51 relative to the vehicle speed as compared to the standard mode B. Thereby, the conveyance speed of the reaping part 5 can be increased and the fallen cereal can be smoothly reaped.
When the forced take-up switch 30 is ON, the forced take-up mode (constant speed drive means) A is set, and the transport HST 51 is driven at the set drive speed regardless of the traveling state of the machine body.

図８は強制掻込モードにおける強制掻込スイッチ操作と搬送ＨＳＴ駆動速度との関係を示すタイムチャート図である。
強制掻込スイッチ３０をＯＮ操作すると、先ず搬送ＨＳＴ５１の駆動速度が搬送駆動開始位置である低速Ｖ１まで一気に増速される。そして、強制掻込スイッチ３０のＯＮ状態を維持すると、所定時間Ｔ１は刈取部５の駆動速度が低速Ｖ１で保持される。更に、所定時間Ｔ１が経過しても強制掻込スイッチ３０のＯＮ状態を維持していると搬送ＨＳＴ５１の駆動速度が徐々に増速されていき、強制掻込スイッチ３０をＯＮ操作してから一定時間Ｔ２が経過すると強制掻込モードＡ（図７参照）の上限駆動速度である設定速度Ｖ２に到達し、それ以降は搬送ＨＳＴ５１の駆動速度が設定速度Ｖ２で保持される。強制掻込モードＡは、強制掻込スイッチ３０をＯＮ操作している間だけ実行されるから、強制掻込スイッチ３０をＯＦＦした段階で強制掻込モードＡが解除されて搬送ＨＳＴ５１の駆動は機体が走行停止している場合は停止する。本実施形態では搬送ＨＳＴ５１の設定速度Ｖ２は、脱穀フィードチェーン１６を手扱ぎ搬送速度で駆動する駆動速度と同等の中速程度に設定している。
よって、従来は図８の二点鎖線Ｄで示すように強制掻込スイッチ３０をＯＮ操作した時に設定速度Ｖ２まで一気に増速していたのを、本発明は最初は低速Ｖ１で駆動して次第に設定速度Ｖ２まで増速するようにしたから、例えば、畦を乗り越えて穀稈の刈取を行いながら圃場に侵入する際に低速（超低速）で機体を走行させた場合に、従来のように走行速度に対して刈取部５の搬送速度が速すぎて穀稈の搬送姿勢が乱れることを防止できる。 FIG. 8 is a time chart showing the relationship between the forced take-up switch operation and the transport HST drive speed in the forced take-up mode.
When the forced scraping switch 30 is turned on, first, the driving speed of the transport HST 51 is increased at a stretch to the low speed V1, which is the transport drive start position. If the ON state of the forced take-in switch 30 is maintained, the driving speed of the cutting unit 5 is held at the low speed V1 for a predetermined time T1. Furthermore, if the forced take-up switch 30 is kept on even after the predetermined time T1 has elapsed, the driving speed of the transport HST 51 is gradually increased, and is constant after the forced take-up switch 30 is turned on. When the time T2 elapses, it reaches the set speed V2 that is the upper limit drive speed of the forced take-in mode A (see FIG. 7), and thereafter, the drive speed of the transport HST 51 is held at the set speed V2. Since the forced take-in mode A is executed only while the forced take-up switch 30 is turned on, the forced take-in mode A is canceled when the forced take-in switch 30 is turned off, and the transport HST 51 is driven by the airframe. If is stopped, stop. In this embodiment, the set speed V2 of the transport HST 51 is set to a medium speed that is equivalent to the drive speed at which the threshing feed chain 16 is handled and driven at the transport speed.
Therefore, in the prior art, as indicated by a two-dot chain line D in FIG. 8, when the forced scratching switch 30 is turned on, the speed is increased to the set speed V2, but the present invention is first driven at the low speed V1 and gradually. Since the speed is increased to the set speed V2, for example, when the aircraft is driven at a low speed (ultra-low speed) when entering the farm field while overcoming the straw and cutting the grain straw, it travels as before. It can prevent that the conveyance speed of the cutting part 5 is too quick with respect to speed, and the conveyance attitude | position of a corn straw is disturb | confused.

図９は同上別実施形態を示すタイムチャート図である。
図８の実施形態では、強制掻込スイッチ３０をＯＮ操作してから所定時間Ｔ１が経過すると搬送ＨＳＴ５１の駆動速度を徐々に増速していったが、図９の実施形態では所定時間Ｔ１が経過すると設定速度Ｖ２まで一気に増速するから、機体が走行停止した状態で強制掻込スイッチ３０をＯＮ操作して刈取部５に残った穀稈を脱穀部１７に搬送する場合にも作業能率を向上させることができる。また、図９の実施形態では搬送ＨＳＴ５１が低速Ｖ１（所定時間Ｔ１内）で駆動している時に強制掻込スイッチ３０をＯＦＦ操作しても、一定時間Ｔ３は低速Ｖ１駆動を保持するように構成したから、強制掻込スイッチ３０のＯＮとＯＦＦを交互に繰り返す操作を行えば、低速Ｖ１駆動状態を安定した状態でしかも任意な時間で維持することができる。 FIG. 9 is a time chart showing another embodiment.
In the embodiment of FIG. 8, the driving speed of the transport HST 51 is gradually increased when a predetermined time T1 has elapsed since the forced take-in switch 30 is turned on. In the embodiment of FIG. Since the speed is increased to the set speed V2 at once, the work efficiency is improved even when the forced scraping switch 30 is turned on and the cereal remaining in the cutting unit 5 is conveyed to the threshing unit 17 in a state where the aircraft has stopped running. Can be improved. In the embodiment shown in FIG. 9, the low speed V1 drive is maintained for a certain time T3 even if the forced take-in switch 30 is turned OFF when the transport HST 51 is driven at the low speed V1 (within a predetermined time T1). Therefore, if the operation for alternately turning ON and OFF the forced take-in switch 30 is performed, the low-speed V1 drive state can be maintained in a stable state and at an arbitrary time.

以上のように構成される本発明のコンバインによれば、機体の走行速度を検出する走行回転センサ６０（車速センサ）と、刈取部５を変速駆動する搬送ＨＳＴ５１（刈取駆動手段）と、搬送ＨＳＴ５１の変速駆動を制御する制御装置６４とを設け、前記制御装置６４に、走行回転センサ６０で検出した車速に連動させて、機体が走行停止した時は刈取部５を駆動停止させると共に、走行速度が速くなれば刈取部５の駆動速度を速くするように、前記搬送ＨＳＴ５１を制御する標準モードＢ（車速連動駆動手段）を設けたコンバインにおいて、前記制御装置６４に、機体の走行速度の大小に関係なく刈取部５を低速Ｖ１で駆動するように、前記搬送ＨＳＴ５１を制御する強制掻込モードＡ（定速駆動手段）を設けると共に、標準モードＢから強制掻込モードＡへの駆動切換を行う強制掻込スイッチ３０（切換操作具）を機体の運転操作部８に設け、前記強制掻込モードＡは、強制掻込スイッチ３０のＯＮ操作に基づき刈取部５を低速Ｖ１駆動に切り換えると共に、前記強制掻込スイッチ３０のＯＮ状態が維持されると、刈取部５を次第に増速（二点鎖線Ａで示すように一気に増速ではなく、比例的に増速、或いは段階的に増速）するように構成したから、低速刈取走行時に刈取部５を確実に駆動して穀稈の押し倒しを防止できると共に、搬送乱れを防止できる。また、運転操作部８に設けた強制掻込スイッチ３０をＯＮ操作するだけで刈取部５を低速Ｖ１駆動に切り換えることができるから操作性が良い。また、強制掻込スイッチ３０のＯＮ状態を維持すると刈取部５が自動的に増速するように構成したから、例えば、機体が停止した状態で刈取部５に残った穀稈を脱穀部１７へ搬送して処理する場合にも作業能率を向上させることができる。
また、前記強制掻込モードＡは、前記強制掻込スイッチ３０のＯＮ状態が維持されると、所定時間Ｔ１は刈取部５の低速Ｖ１駆動を保持し、所定時間Ｔ１を経過すると刈取部５を増速するように構成したから、刈取部５の低速駆動が安定して搬送乱れを防止できる。
また、前記強制掻込モードＡは、刈取部５の低速Ｖ１駆動時に強制掻込スイッチ３０をＯＦＦ操作しても、一定時間Ｔ３は低速Ｖ１駆動を保持するように構成したから、強制掻込スイッチ３０でＯＮとＯＦＦを交互繰り返す操作を行えば刈取部５を低速Ｖ１駆動状態で維持することができる。 According to the combine of the present invention configured as described above, the traveling rotation sensor 60 (vehicle speed sensor) that detects the traveling speed of the airframe, the transport HST 51 (cutting drive means) that drives the mowing unit 5 at a variable speed, and the transport HST 51. And a control device 64 for controlling the speed change drive of the vehicle. In conjunction with the vehicle speed detected by the travel rotation sensor 60, the control device 64 stops driving the cutting unit 5 when the vehicle stops traveling, In a combine provided with a standard mode B (vehicle speed interlocking drive means) for controlling the transport HST 51 so as to increase the driving speed of the cutting unit 5 when the speed becomes faster, the control device 64 can increase or decrease the traveling speed of the aircraft. Regardless of whether or not the cutting unit 5 is driven at the low speed V1, a forced scratch mode A (constant speed driving means) for controlling the transport HST 51 is provided, and the standard mode B is stronger than the standard mode B. A forced scraping switch 30 (switching operation tool) for switching the driving to the scraping mode A is provided in the driving operation section 8 of the aircraft, and the forced scraping mode A is based on the ON operation of the forced scraping switch 30. 5 is switched to low-speed V1 drive, and the ON state of the forced scratch switch 30 is maintained, the reaping section 5 is gradually increased in speed (as indicated by the two-dot chain line A, it is not increased at a stretch but proportionally increased. Therefore, the cutting unit 5 can be reliably driven during the low-speed cutting operation to prevent the cereals from being pushed down, and the conveyance disturbance can be prevented. In addition, the operability is good because the mowing unit 5 can be switched to the low-speed V1 drive only by turning on the forced take-in switch 30 provided in the driving operation unit 8. Moreover, since it was comprised so that the cutting part 5 might accelerate automatically if the ON state of the forced biting switch 30 was maintained, for example, the cereal residue which remained in the cutting part 5 in the state which the airframe stopped to the threshing part 17 The work efficiency can also be improved when transporting and processing.
Further, in the forced biting mode A, when the forced biting switch 30 is kept in the ON state, the low speed V1 drive of the cutting unit 5 is maintained for a predetermined time T1, and when the predetermined time T1 has elapsed, the cutting unit 5 is turned on. Since it is configured to increase the speed, the low-speed driving of the cutting unit 5 can be stably performed and conveyance disturbance can be prevented.
Further, the forced take-up mode A is configured so that the low-speed V1 drive is maintained for a certain time T3 even if the forced take-up switch 30 is turned OFF when the cutting unit 5 is driven at the low speed V1. If the operation of repeating ON and OFF alternately at 30 is performed, the cutting unit 5 can be maintained in the low-speed V1 driving state.

図８，９の実施形態では、搬送駆動開始位置における駆動速度を低速Ｖ１と設定したが、これに限らず、搬送駆動開始位置をゼロとしてそこから徐々に駆動速度を経過時間に比例させて増速させる構成としてもよい。即ち、図８の二点鎖線Ａで示すように強制掻込スイッチ３０をＯＮ操作した時に設定速度Ｖ２まで一気に増速させずに、強制掻込スイッチ３０をＯＮ操作した時に暫く搬送ＨＳＴ５１が低速で駆動するものであれば、図８，９の実施形態のように駆動速度を変化させず保持するものでなくてもよい。但し、図８，９の実施形態のように、刈取部５の駆動速度が所定時間Ｔ１は低速Ｖ１で保持される構成にすると、刈取部５の低速駆動が安定して穀稈の搬送も安定する。   In the embodiment of FIGS. 8 and 9, the driving speed at the transport driving start position is set to the low speed V1, but this is not restrictive, and the transport driving start position is set to zero and the driving speed is gradually increased in proportion to the elapsed time. It is good also as a structure made to speed up. That is, as indicated by a two-dot chain line A in FIG. 8, when the forced pick-up switch 30 is turned on, the conveyance HST 51 is kept at a low speed for a while when the forced pick-up switch 30 is turned on without increasing the speed to the set speed V2. As long as it drives, it does not need to hold without changing the driving speed as in the embodiments of FIGS. However, as in the embodiment of FIGS. 8 and 9, when the driving speed of the cutting unit 5 is maintained at the low speed V1 for a predetermined time T1, the low-speed driving of the cutting unit 5 is stable and the conveyance of the cereals is stable. To do.

本実施形態では、搬送ＨＳＴ５１で刈取部５と脱穀フィードチェーン１６の両方を駆動する構成としたが、これに限らず、両者の伝動経路を独立させて搬送ＨＳＴ５１で刈取部５だけを駆動するように構成してもよい。   In this embodiment, although it was set as the structure which drives both the reaping part 5 and the threshing feed chain 16 by conveyance HST51, it is not restricted to this, It is made to drive only the reaping part 5 by conveyance HST51 independently of both. You may comprise.

本実施形態では、機体の走行速度を走行回転センサ６０で検出する構成としたが、これに限らず、主変速レバーポテンショメータ５９の検出値を走行速度として搬送ＨＳＴ制御を行う構成としてもよい。   In the present embodiment, the traveling speed of the airframe is detected by the traveling rotation sensor 60. However, the present invention is not limited thereto, and the transport HST control may be performed using the detected value of the main transmission lever potentiometer 59 as the traveling speed.

５ 刈取部
５１ 搬送ＨＳＴ（刈取駆動手段）
６０ 走行回転センサ（車速センサ）
６４ 制御装置（搬送ポテンショメータ６１、制御部５８、搬送変速モータ６２）
Ａ 強制掻込モード（定速駆動手段）
Ｂ 標準モード（車速連動駆動手段）
Ｃ 倒伏モード（車速連動駆動手段） 5 Cutting part 51 Conveyance HST (cutting drive means)
60 Traveling rotation sensor (vehicle speed sensor)
64 control device (conveyance potentiometer 61, control unit 58, conveyance speed change motor 62)
A Forced biting mode (constant speed drive means)
B Standard mode (vehicle speed interlocking drive means)
C Lodging mode (vehicle speed interlocking drive means)

Claims (3)

機体の走行速度を検出する車速センサ（６０）と、刈取部（５）を変速駆動する刈取駆動手段（５１）と、刈取駆動手段（５１）の変速駆動を制御する制御装置（６４）とを設け、前記制御装置（６４）に、車速センサ（６０）で検出した車速に連動させて、機体が走行停止した時は刈取部（５）を駆動停止させると共に、走行速度が速くなれば刈取部（５）の駆動速度を速くするように、前記刈取駆動手段（５１）を制御する車速連動駆動手段（Ｂ，Ｃ）を設けたコンバインにおいて、前記制御装置（６４）に、機体の走行速度の大小に関係なく刈取部（５）を低速（Ｖ１）で駆動するように、前記刈取駆動手段（５１）を制御する定速駆動手段（Ａ）を設けると共に、車速連動駆動手段（Ｂ，Ｃ）から定速駆動手段（Ａ）への駆動切換を行う切換操作具（３０）を機体の運転操作部（８）に設け、前記定速駆動手段（Ａ）は、切換操作具（３０）のＯＮ操作に基づき刈取部（５）を低速（Ｖ１）駆動に切り換えると共に、前記切換操作具（３０）のＯＮ状態が維持されると、刈取部（５）を次第に増速するように構成したことを特徴とするコンバイン。   A vehicle speed sensor (60) for detecting the traveling speed of the airframe, a cutting drive means (51) for shifting the cutting part (5), and a control device (64) for controlling the shifting drive of the cutting drive means (51). The control device (64) is interlocked with the vehicle speed detected by the vehicle speed sensor (60), and when the vehicle stops traveling, the mowing unit (5) is stopped driving, and if the traveling speed is increased, the mowing unit In the combine provided with the vehicle speed interlocking drive means (B, C) for controlling the cutting drive means (51) so as to increase the drive speed of (5), the control device (64) is connected to the travel speed of the aircraft. Constant speed driving means (A) for controlling the cutting drive means (51) is provided so as to drive the cutting part (5) at low speed (V1) regardless of the size, and vehicle speed interlocking driving means (B, C). Switch from constant to constant speed drive means (A) A switching operation tool (30) is provided in the driving operation section (8) of the fuselage, and the constant speed driving means (A) operates the cutting section (5) at a low speed (V1) based on the ON operation of the switching operation tool (30). The combine that is configured to gradually increase the speed of the mowing unit (5) when switching to driving and maintaining the ON state of the switching operation tool (30). 前記定速駆動手段（Ａ）は、前記切換操作具（３０）のＯＮ状態が維持されると、所定時間（Ｔ１）は刈取部（５）の低速（Ｖ１）駆動を保持し、所定時間（Ｔ１）を経過すると刈取部（５）を増速するように構成したことを特徴とする請求項１のコンバイン。   When the switching operation tool (30) is maintained in the ON state, the constant speed driving means (A) maintains the low speed (V1) drive of the cutting unit (5) for a predetermined time (T1). The combine according to claim 1, wherein the harvesting part (5) is accelerated when T1) elapses. 前記定速駆動手段（Ａ）は、刈取部（５）の低速（Ｖ１）駆動時に切換操作具（３０）をＯＦＦ操作しても、一定時間（Ｔ３）は低速（Ｖ１）駆動を保持するように構成したことを特徴とする請求項２のコンバイン。   The constant speed drive means (A) maintains the low speed (V1) drive for a certain period of time (T3) even if the switching operation tool (30) is turned OFF during the low speed (V1) drive of the cutting part (5). The combine according to claim 2, which is configured as follows.

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