JP4897744B2 - Combine - Google Patents

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JP4897744B2
JP4897744B2 JP2008165732A JP2008165732A JP4897744B2 JP 4897744 B2 JP4897744 B2 JP 4897744B2 JP 2008165732 A JP2008165732 A JP 2008165732A JP 2008165732 A JP2008165732 A JP 2008165732A JP 4897744 B2 JP4897744 B2 JP 4897744B2
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transmission
sub
shift
speed
hydraulic motor
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JP2008286401A (en
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天 奥山
文男 長野
國祐 中村
如一 田中
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Kubota Corp
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Kubota Corp
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本発明は、コンバインに関する。   The present invention relates to a combine.

コンバインにおいて、従来、たとえば特許文献1に示されるように、エンジンEからの動力を静油圧式の無段変速装置10を介してミッションケースMの走行伝動系に伝達するように構成し、無段変速装置10の出力軸13からの動力が第1軸S1の高速伝動ギヤ18とシフトギヤ19、第2軸S2の高速入力ギヤ20と中速入力ギヤ21と低速入力ギヤ22によって変速されるように副変速装置を構成し、無段変速装置10を変速操作する主変速レバー6、副変速装置を変速操作する副変速レバー7を備えたものがあった。
すなわち主変速装置としての無段変速装置10を主変速レバー6によって変速操作し、副変速装置を副変速レバー7によって変速操作するように走行用変速操作装置を構成したものがあった。
Conventionally, the combine is configured to transmit the power from the engine E to the traveling transmission system of the transmission case M via the hydrostatic continuously variable transmission 10 as shown in Patent Document 1, for example. The power from the output shaft 13 of the transmission 10 is changed by the high speed transmission gear 18 and the shift gear 19 of the first shaft S1, and the high speed input gear 20, the medium speed input gear 21 and the low speed input gear 22 of the second shaft S2. In some cases, the sub-transmission device includes a main transmission lever 6 for shifting the continuously variable transmission 10 and a sub-transmission lever 7 for shifting the sub-transmission device.
That is, there is a configuration in which a traveling speed change operation device is configured such that a continuously variable transmission 10 as a main transmission is operated to be shifted by a main transmission lever 6 and a sub transmission is operated to be shifted by a sub transmission lever 7.

特開2000−94988号公報(〔0017〕−〔0020〕、図2,3)JP 2000-94988 A ([0017]-[0020], FIGS. 2 and 3)

特開平10−30721号公報(〔0010〕−〔0014〕、図1,2,3,6)Japanese Patent Laid-Open No. 10-30721 ([0010]-[0014], FIGS. 1, 2, 3, 6)

本発明の目的は、作業走行の際も移動走行の際もそれに応じた適切な変速走行を操作面などで有利に行なうことができるコンバインを提供することにある。   An object of the present invention is to provide a combine capable of advantageously performing an appropriate shift traveling according to the operation on the operation surface or the like during both the work traveling and the traveling traveling.

本第1発明にあっては、油圧ポンプと油圧モータとを備えた静油圧式無段変速装置を備え、油圧ポンプを、前進伝動状態及び後進伝動状態に無段階に変速自在な可変容量形に構成し、油圧モータを、移動走行用の高速、標準用の中速、及び倒伏が激しい穀稈を刈り取る倒伏用の低速に操作自在な可変容量形に構成して、油圧ポンプを操作するもので人為的に操作される変速レバーと、油圧モータを操作するアクチュエータと、アクチュエータを操作するもので人為的に操作される変速スイッチとを備えて、変速スイッチを変速レバーに備える。 In the first aspect of the invention, the hydrostatic continuously variable transmission device including the hydraulic pump and the hydraulic motor is provided, and the hydraulic pump is changed to a variable capacity type that can be steplessly shifted between the forward transmission state and the reverse transmission state. It is configured to operate the hydraulic pump by configuring the hydraulic motor to be a variable displacement type that can be operated at high speed for mobile traveling, medium speed for standard, and low speed for lodging to harvest cereals that are violently falling The shift lever includes a shift lever that is artificially operated, an actuator that operates a hydraulic motor, and a shift switch that operates the actuator and is manually operated.

本第2発明にあっては、本第1発明の構成において、エンジンから刈取り前処理部に駆動力を伝達する作業用伝動系に油圧ポンプと、油圧モータと、ミッションケースとを直列に配置して、油圧モータの出力軸の駆動力をミッションケースの作業用出力軸に伝達し、作業用出力軸の駆動力を刈取り前処理部の入力軸に伝達するように構成している。 In the second aspect of the invention, in the configuration of the first aspect of the invention , a hydraulic pump, a hydraulic motor, and a transmission case are arranged in series in the working transmission system that transmits the driving force from the engine to the pre-cutting processing unit. Thus, the driving force of the output shaft of the hydraulic motor is transmitted to the work output shaft of the transmission case, and the driving force of the work output shaft is transmitted to the input shaft of the pre-cutting processing unit.

以下、本発明を明確にする為の参考形態を図1〜図9に基づいて説明しており、図10に基づいて本発明の実施形態を説明している。
(参考形態)
図1に示すように、左右一対のクローラ式の走行装置1、運転座席2を有した搭乗型の運転部などを備えた自走機体の機体フレーム3の前部に、刈取り前処理部4の前処理部フレーム4aの基部を機体横向きの軸芯まわりで回動自在に連結するとともに、前記前処理部フレーム4aにリフトシリンダ5を連動させ、前記機体フレーム3に脱穀装置6、穀粒タンク7を設けてコンバインを構成してある。
Hereinafter, reference embodiments for clarifying the present invention will be described with reference to FIGS. 1 to 9, and embodiments of the present invention will be described with reference to FIG. 10.
(Reference form)
As shown in FIG. 1, a pre-cutting processing unit 4 is provided at a front portion of a body frame 3 of a self-propelled aircraft including a pair of left and right crawler type traveling devices 1 and a riding type driving unit having a driver's seat 2. The base of the pretreatment unit frame 4a is connected to be pivotable about the horizontal axis of the machine body, and a lift cylinder 5 is interlocked with the pretreatment unit frame 4a. A combine is configured.

このコンバインは、稲・麦などの穀粒を収穫するものであり、前記リフトシリンダ5を操作すると、このリフトシリンダ5が前処理部フレーム4aを機体フレーム3に対して上下に揺動操作して刈取り前処理部4を引起し装置4bの下部が地面上近くに位置した下降作業状態と、引起し装置4bが地面から高く浮上した上昇非作業状態とに昇降操作する。刈取り前処理部4を下降作業状態にして自走機体を走行させると、刈取り前処理部4は、植立穀稈を引起し装置4bによって引起し処理しながらバリカン型の刈取装置4cに供給して刈取り処理し、刈取穀稈を搬送装置4dによって機体後方向きに搬送して脱穀装置6の脱穀フィードチェーン6aの始端部に供給する。脱穀装置6は、脱穀フィードチェーン6aによって刈取穀稈の株元側を機体後方側に搬送しながらその穂先側を扱き室(図示せず)に供給して脱穀処理する。穀粒タンク7は、脱穀装置6からの脱穀粒を回収して貯留していく。   This combine harvests grains such as rice and wheat, and when the lift cylinder 5 is operated, the lift cylinder 5 swings the pretreatment unit frame 4a up and down with respect to the body frame 3. The pre-cutting processing unit 4 is raised and moved up and down to a lowering work state in which the lower part of the device 4b is located near the ground and a raising non-working state in which the raising device 4b is raised above the ground. When the pre-cutting processing unit 4 is in the descending work state and the self-propelled machine is traveling, the pre-cutting processing unit 4 raises the planted culm and raises it by the device 4b and supplies it to the clipper type cutting device 4c. The harvested cereals are conveyed toward the rear of the machine body by the conveying device 4d and supplied to the start end of the threshing feed chain 6a of the threshing device 6. The threshing device 6 feeds the tip side to the handling room (not shown) while carrying the stock side of the harvested cereal rice cake to the rear side of the machine body by the threshing feed chain 6a, and performs the threshing process. The grain tank 7 collects and stores the threshing grains from the threshing device 6.

自走機体の前記運転座席2の下方にエンジン8を設け、このエンジン8の駆動力を左右の走行装置1,1に伝達する走行用伝動系、前記エンジン8の駆動力を刈取り前処理部4に伝達する作業用伝動系を、図2に示す如く構成してある。
すなわち、走行用伝動系は、エンジン8の出力軸8aの駆動力を伝動ベルト9を利用して主変速装置10の入力軸11に伝達し、この主変速装置10の出力軸12の駆動力をミッションケース20に伝達してこのミッションケース20の内部でギヤ式減速機構(図示せず)を介して左右一対の操向クラッチ21に伝達し、左側の操向クラッチ21の回転出力をミッションケース20の左横側から出力して左側の走行装置1のクローラ駆動スプロケット1aに伝達し、右側の操向クラッチ21の回転出力をミッションケース20の右横側から出力して右側の走行装置1のクローラ駆動スプロケット1aに伝達するように構成してある。
作業用伝動系は、前記主変速装置10の前記出力軸12の駆動力をミッションケース20の作業用出力軸22に伝達し、この作業用出力軸22の駆動力を伝動ベルト23を利用して刈取り前処理部4の入力軸4eに伝達するように構成してある。
An engine 8 is provided below the driver's seat 2 of the self-propelled machine body, a transmission system for transmitting the driving force of the engine 8 to the left and right traveling devices 1, 1, and a preprocessing unit 4 for cutting the driving force of the engine 8. The work transmission system for transmitting to the system is configured as shown in FIG.
That is, the traveling transmission system transmits the driving force of the output shaft 8a of the engine 8 to the input shaft 11 of the main transmission 10 using the transmission belt 9, and the driving force of the output shaft 12 of the main transmission 10 is transmitted. The transmission is transmitted to the mission case 20 and is transmitted to the pair of left and right steering clutches 21 via a gear type reduction mechanism (not shown) inside the mission case 20, and the rotational output of the left steering clutch 21 is transmitted to the mission case 20. Is output from the left lateral side and transmitted to the crawler drive sprocket 1a of the left traveling device 1, and the rotational output of the right steering clutch 21 is output from the right lateral side of the mission case 20 to be crawler of the right traveling device 1. It is configured to transmit to the drive sprocket 1a.
The work transmission system transmits the drive force of the output shaft 12 of the main transmission 10 to the work output shaft 22 of the transmission case 20, and uses the drive belt 23 to drive the drive force of the work output shaft 22. It is configured to transmit to the input shaft 4 e of the pre-cutting processing unit 4.

前記主変速装置10は、前記入力軸11によってシリンダブロック(図示せず)が駆動されるように構成したアキシャルプランジャ形で、かつ可変容量形の油圧ポンプ13と、この油圧ポンプ13からの圧油によって駆動されて前記出力軸12から出力するアキシャルプランジャ形の油圧モータ14とを備えて構成してあり、静油圧式無段変速装置になっている。
すなわち、油圧ポンプ13の斜板角の変更操作が行なわれることにより、エンジン8からの駆動力を前進駆動力に変換して左右の走行装置1,1に伝達する前進伝動状態と、エンジン8からの駆動力を後進駆動力に変換して左右の走行装置1,1に伝達する後進伝動状態と、油圧モータ14の駆動を停止して左右の走行装置1,1に対する伝動を絶つ中立状態とに切り換わるようになっている。また、前進伝動状態においても後進伝動状態においてもエンジン8からの駆動力を無段階に変速して左右の走行装置1,1に伝達するようになっている。
The main transmission 10 is an axial plunger type and variable displacement type hydraulic pump 13 configured such that a cylinder block (not shown) is driven by the input shaft 11, and pressure oil from the hydraulic pump 13. And an axial plunger type hydraulic motor 14 that is driven by the output shaft 12 and outputs from the output shaft 12 to form a hydrostatic continuously variable transmission.
That is, when the swash plate angle of the hydraulic pump 13 is changed, the forward drive state in which the driving force from the engine 8 is converted into the forward driving force and transmitted to the left and right traveling devices 1, 1, Is converted into a reverse drive force and transmitted to the left and right traveling devices 1, 1, and a reverse transmission state in which driving of the hydraulic motor 14 is stopped and transmission to the left and right traveling devices 1, 1 is cut off. It is designed to switch. In both the forward transmission state and the reverse transmission state, the driving force from the engine 8 is steplessly changed and transmitted to the left and right traveling devices 1, 1.

主変速装置10を構成する前記油圧モータ14は、前記油圧ポンプ13の容量の1倍以上の容量を有する可変容量形の油圧モータに構成してある。これにより、油圧モータ14は、主変速装置10と直列に並び合った状態で走行用伝動系に設けられた副変速装置になっており、この油圧モータ14の斜板角の変更操作が行なわれることにより、エンジン8からの駆動力を副変速して左右の走行装置1,1に伝達するようになっている。   The hydraulic motor 14 constituting the main transmission 10 is configured as a variable displacement hydraulic motor having a capacity of one or more times the capacity of the hydraulic pump 13. As a result, the hydraulic motor 14 is a sub-transmission device provided in the traveling transmission system in a state where the hydraulic motor 14 is arranged in series with the main transmission device 10, and an operation of changing the swash plate angle of the hydraulic motor 14 is performed. As a result, the driving force from the engine 8 is sub-shifted and transmitted to the left and right traveling apparatuses 1 and 1.

図2に示すように、主変速装置10の油圧ポンプ13の斜板操作軸(図示せず)に電動式の主変速モータ25を連動させて、この主変速モータ25によって主変速装置10を変速操作するように構成し、前記油圧モータ14の斜板操作軸(図示せず)に電動式の副変速モータ26を連動させて、この副変速モータ26によって油圧モータ14を変速操作するように構成してある。図4に示すように、主変速モータ25及び副変速モータ26を変速制御手段27に連係させてある。   As shown in FIG. 2, an electric main transmission motor 25 is interlocked with a swash plate operating shaft (not shown) of the hydraulic pump 13 of the main transmission 10, and the main transmission 10 is shifted by the main transmission motor 25. An electric sub-transmission motor 26 is interlocked with a swash plate operating shaft (not shown) of the hydraulic motor 14, and the sub-transmission motor 26 is operated to change the speed of the hydraulic motor 14. It is. As shown in FIG. 4, the main transmission motor 25 and the auxiliary transmission motor 26 are linked to the transmission control means 27.

図3に示すように、運転部の運転座席2の横側方に、レバーガイド30のガイド溝31に案内されて機体前後方向に揺動操作するように構成した主変速レバー32、この主変速レバー32の横側近くに位置させて前記レバーガイド30に設置した複数個の副変速手段33,34,35及び1個の主副変速モード選択手段36を設けてある。図4に示すように、前記主変速レバー32に検出作用するレバー位置検出手段37、前記各副変速手段33,34,35、前記主副変速モード選択手段36も、前記変速制御手段27に連係させてある。油圧ポンプ13の斜板操作軸の操作位置に基いて主変速装置10の変速状態を検出する主変速センサ38、及び、油圧モータ14の斜板操作軸の操作位置に基いて油圧モータ14の変速状態を検出する副変速センサ39も変速制御手段27に連係させてある。前記エンジン8の出力回転数を検出するエンジン回転センサ40も、走行装置1の駆動速度を検出する速度センサ41も前記変速制御手段27に連係させてある。   As shown in FIG. 3, a main speed change lever 32 configured to be guided by a guide groove 31 of a lever guide 30 and to be swung in the longitudinal direction of the fuselage is laterally laterally of a driver seat 2 of the driving section. A plurality of sub-transmission means 33, 34, 35 and one main / sub-transmission mode selection means 36 disposed on the lever guide 30 are provided near the side of the lever 32. As shown in FIG. 4, the lever position detecting means 37 for detecting the main transmission lever 32, the auxiliary transmission means 33, 34, 35 and the main auxiliary transmission mode selection means 36 are also linked to the transmission control means 27. I'm allowed. The main transmission sensor 38 that detects the shift state of the main transmission 10 based on the operation position of the swash plate operation shaft of the hydraulic pump 13 and the shift of the hydraulic motor 14 based on the operation position of the swash plate operation shaft of the hydraulic motor 14. A sub shift sensor 39 for detecting the state is also linked to the shift control means 27. An engine speed sensor 40 that detects the output speed of the engine 8 and a speed sensor 41 that detects the drive speed of the traveling device 1 are linked to the speed change control means 27.

前記レバー位置検出手段37は、主変速レバー32に操作部が連動されたポテンショメータによって構成してあり、主変速レバー32が主変速装置10を中立状態に操作する中立位置N、主変速装置10を前進伝動状態に操作する前進域F、主変速装置10を後進伝動状態に操作する後進域Rのいずれの操作位置や操作域に操作されたかを検出し、さらに主変速レバー32が前進域Fや後進域Rにおけるいずれの操作位置に操作されたかを検出し、この検出結果を電気信号にして変速制御手段27に出力する。   The lever position detecting means 37 is constituted by a potentiometer having an operation unit linked to the main transmission lever 32, and the main transmission lever 32 operates a neutral position N for operating the main transmission 10 in a neutral state, and the main transmission 10 It is detected which operating position and operating range of the forward range F for operating in the forward transmission state and the reverse range R for operating the main transmission 10 in the reverse transmission state. It is detected which operating position in the reverse range R is operated, and the detection result is output as an electric signal to the shift control means 27.

主副変速モード選択手段36は、押しボタン式のモード選択スイッチで成り、押し操作されることによって主副変速モード指令を変速制御手段27に出力する。   The main / sub shift mode selection means 36 is composed of a push button type mode selection switch, and outputs a main / sub shift mode command to the shift control means 27 when pressed.

前記複数個の副変速手段33,34,35は、押しボタン式の副変速スイッチで成り、各副変速手段33,34,35は、押し操作されることによって副変速モード指令を変速制御手段27に出力する。また、複数個の副変速手段33,34,35のうちの高速用の副変速手段33は、押し操作されると、副変速モード指令の他に、油圧モータ14を高速の副変速状態に切り換え操作させるべく高速副変速指令も変速制御手段27に出力する。複数個の副変速手段33,34,35のうちの標準用の副変速手段24は、押し操作されると、副変速モード指令の他に、油圧モータ14を中速の副変速状態に切り換え操作させるべき中速副変速指令も変速制御手段27に出力する。複数個の副変速手段33,34,35のうちの倒伏用の副変速手段35は、押し操作されると、副変速モード指令の他に、油圧モータ14を低速の副変速状態に切り換え操作させるべき低速副変速指令も変速制御手段27に出力する。   The plurality of sub-transmission means 33, 34, and 35 are formed of push-button sub-transmission switches, and each sub-transmission means 33, 34, and 35 are operated to push a sub-transmission mode command by the shift control means 27. Output to. Further, when the high-speed sub-transmission means 33 among the plurality of sub-transmission means 33, 34, 35 is pushed, the hydraulic motor 14 is switched to a high-speed sub-transmission state in addition to the sub-transmission mode command. A high-speed sub-shift command is also output to the shift control means 27 for operation. When the standard sub-transmission unit 24 among the plurality of sub-transmission units 33, 34, and 35 is pushed, in addition to the sub-transmission mode command, the hydraulic motor 14 is switched to a medium-speed sub-transmission state. A medium speed sub-shift command to be executed is also output to the shift control means 27. Of the plurality of sub-transmission units 33, 34, 35, when the sub-transmission unit 35 for lying down is pushed, the hydraulic motor 14 is switched to a low-speed sub-transmission state in addition to the sub-transmission mode command. A power low speed sub-shift command is also output to the shift control means 27.

変速制御手段27は、マイクロコンピュータを利用して成り、前記主副変速モード選択手段36、前記各副変速手段33,34,35、前記レバー位置検出手段37からの情報を基に、図5〜8に示す如く作動する。   The shift control means 27 is made up of a microcomputer, and is based on the information from the main / sub shift mode selection means 36, the auxiliary shift means 33, 34, 35, and the lever position detection means 37 as shown in FIG. It operates as shown in FIG.

すなわち、図5に示すように、変速制御手段27は、主副変速モード選択手段36から主副変速モード指令を入力すると、主副変速制御モードに切り換わって主副変速制御を実行する。図7に示すように、レバー位置検出手段37による検出情報を基に主変速レバー32が操作されたか否かを判断し、主変速レバー32が操作されたと判断すると、レバー位置検出手段37による検出情報を基に、主変速センサ38による検出情報に基いて主変速装置10が制御目標変速状態になったと判断するまで主変速モータ25を駆動操作し、主変速装置10を主変速レバー32の操作位置に対応する変速状態に変速操作する。さらに、レバー位置検出手段37による検出情報を基に、副変速センサ39による検出情報に基いて油圧モータ14が制御目標副変速状態になったと判断するまで副変速モータ26を駆動操作し、油圧モータ14を主変速レバー32の操作位置に対応する副変速状態に変速操作する。油圧モータ14の変速操作についてさらに詳述すると、図9に示すように、主変速レバー32が前進域Fや後進域Rの低速部に操作された場合には、油圧モータ14を低速の副変速状態に変速操作し、主変速レバー32が前進域Fや後進域Rの中速部に操作された場合には、油圧モータ14を中速の副変速状態に変速操作し、主変速レバー32が前進域Fや後進域Rの高速部に操作された場合には、油圧モータ14を高速の副変速状態に変速操作する。   That is, as shown in FIG. 5, when the main / sub shift mode command is input from the main / sub shift mode selection unit 36, the shift control unit 27 switches to the main / sub shift control mode and executes the main / sub shift control. As shown in FIG. 7, it is determined whether or not the main transmission lever 32 has been operated based on information detected by the lever position detection unit 37, and if it is determined that the main transmission lever 32 has been operated, detection by the lever position detection unit 37 is performed. Based on the information, the main transmission motor 25 is driven until the main transmission 10 is determined to be in the control target shift state based on information detected by the main transmission sensor 38, and the main transmission 10 is operated by the main transmission lever 32. Shift operation is performed to a shift state corresponding to the position. Further, based on the detection information by the lever position detection means 37, the sub-transmission motor 26 is driven until it is determined that the hydraulic motor 14 is in the control target sub-shift state based on the detection information by the sub-transmission sensor 39. 14 is shifted to a sub-shift state corresponding to the operation position of the main shift lever 32. More specifically, the speed change operation of the hydraulic motor 14 will be described. As shown in FIG. 9, when the main speed change lever 32 is operated to the low speed portion of the forward range F or the reverse range R, the hydraulic motor 14 is moved to the low speed sub-shift. When the main speed change lever 32 is operated to the middle speed portion of the forward range F or the reverse range R, the hydraulic motor 14 is changed to the medium speed sub-shift state, and the main speed change lever 32 is When operated to the high speed portion of the forward range F or the reverse range R, the hydraulic motor 14 is shifted to a high speed sub-shift state.

図5に示すように、変速制御手段27は、副変速手段33,34,35から副変速モード指令を入力すると、副変速制御モードに切り換わり、主変速制御と副変速制御を実行する。図6に示すように、レバー位置検出手段37による検出情報を基に主変速レバー32が操作されたか否かを判断し、主変速レバー32が操作されたと判断すると、レバー位置検出手段37による検出情報を基に、主変速センサ38による検出情報に基いて主変速装置10が制御目標変速状態になったと判断するまで主変速モータ25を駆動操作し、主変速装置10を主変速レバー32の操作位置に対応する変速状態に変速操作する。さらに、図8のステップ1〜4に示すように、高速用の副変速手段33から高速副変速指令を入力すると、この高速副変速指令を基に、副変速センサ39による検出情報に基いて油圧モータ14が制御目標副変速状態になったと判断するまで副変速モータ26を駆動し、油圧モータ14を高速副変速指令に対応する高速の変速状態に変速操作する。図8のステップ5〜7に示すように、標準用の副変速手段34から中速副変速指令を入力すると、この中速副変速指令を基に、副変速センサ39による検出情報に基いて油圧モータ14が制御目標副変速状態になったと判断するまで副変速モータ26を駆動し、油圧モータ14を中速副変速指令に対応する中速の副変速状態に変速操作する。図8のステップ8〜10に示すように、倒伏用の副変速手段35から低速副変速指令を入力すると、この低速副変速指令を基に、副変速センサ39による検出情報に基いて油圧モータ14が制御目標副変速状態になったと判断するまで副変速モータ26を駆動し、油圧モータ14を低速副変速指令に対応する低速の副変速状態に変速操作する。   As shown in FIG. 5, when the sub-transmission mode command is input from the sub-transmission units 33, 34, 35, the shift control unit 27 switches to the sub-transmission control mode, and executes the main transmission control and the sub-transmission control. As shown in FIG. 6, it is determined whether or not the main transmission lever 32 has been operated based on information detected by the lever position detection unit 37, and if it is determined that the main transmission lever 32 has been operated, detection by the lever position detection unit 37 is performed. Based on the information, the main transmission motor 25 is driven until the main transmission 10 is determined to be in the control target shift state based on information detected by the main transmission sensor 38, and the main transmission 10 is operated by the main transmission lever 32. Shift operation is performed to a shift state corresponding to the position. Further, as shown in steps 1 to 4 of FIG. 8, when a high-speed sub-transmission command is input from the high-speed sub-transmission means 33, the hydraulic pressure is determined based on information detected by the sub-transmission sensor 39 based on the high-speed sub-transmission command. The sub-transmission motor 26 is driven until it is determined that the motor 14 is in the control target sub-shift state, and the hydraulic motor 14 is shifted to a high-speed shift state corresponding to the high-speed sub-shift command. As shown in steps 5 to 7 of FIG. 8, when a medium speed sub-shift command is input from the standard sub-transmission means 34, the hydraulic pressure is determined based on information detected by the sub-speed sensor 39 based on the medium speed sub-shift command. The sub-transmission motor 26 is driven until it is determined that the motor 14 is in the control target sub-transmission state, and the hydraulic motor 14 is shifted to a medium-speed sub-transmission state corresponding to the medium-speed sub-transmission command. As shown in steps 8 to 10 of FIG. 8, when a low-speed sub-shift command is input from the sub-transmission means 35 for lodging, the hydraulic motor 14 is based on information detected by the sub-shift sensor 39 based on this low-speed sub-shift command. Until the control target sub-shift state is determined, the sub-transmission motor 26 is driven to shift the hydraulic motor 14 to a low-speed sub-shift state corresponding to the low-speed sub-shift command.

変速制御手段27は、エンジン回転センサ40による検出エンジン回転数と、速度センサ41による検出速度を基に、走行装置1の駆動負荷を演算し、この演算駆動負荷が設定値以上の負荷になったか否かを判断し、演算駆動負荷が設定値以上になったと判断した場合、副変速モータ26をレバー位置検出手段37からの検出情報や各副変速手段33,35からの副変速指令に優先して駆動操作し、主変速レバー32が操作されている操作位置にかかわらず、かつ高速や中速用の副変速指令にかかわらず、油圧モータ14を低速の副変速状態に変速操作する。   The shift control means 27 calculates the driving load of the traveling device 1 based on the engine speed detected by the engine rotation sensor 40 and the detection speed detected by the speed sensor 41, and whether the calculated driving load has become a load greater than a set value. If it is determined that the calculation drive load has exceeded the set value, the auxiliary transmission motor 26 is prioritized over the detection information from the lever position detection means 37 and the auxiliary transmission commands from the auxiliary transmission means 33 and 35. The hydraulic motor 14 is shifted to a low-speed sub-shift state regardless of the operation position where the main shift lever 32 is operated and regardless of the high-speed or medium-speed sub-shift command.

つまり、倒伏が激しくない穀稈を刈り取るなど、通常の作業走行を行なうに当たり、主副変速モード選択手段36を押し操作する。すると、この主副変速モード選択手段36が出力する主副変速モード指令のために変速制御手段27が主副変速制御モードに切り換わり、変速制御手段27は、レバー位置検出手段37による検出情報を基に主変速モータ25及び副変速モータ26を操作して主変速装置10及び油圧モータ14を主変速レバー32の操作位置に対応する変速状態に切り換え操作するのであり、主変速レバー32を操作するだけで、主変速装置10を無段階に変速操作することによって走行装置1の駆動速度を変更する主変速と、油圧モータ14を低、中、高速の3段階の副変速状態に切り換えることによって走行装置1の駆動速度を変更する副変速とを一挙に行ないながら走行することができる。   In other words, the main / sub transmission mode selection means 36 is pushed to perform normal work travel such as harvesting cereals that are not overly laid down. Then, the shift control means 27 is switched to the main / sub shift control mode for the main / sub shift mode command output by the main / sub shift mode selection means 36, and the shift control means 27 detects the information detected by the lever position detection means 37. Based on this, the main transmission motor 25 and the sub-transmission motor 26 are operated to switch the main transmission 10 and the hydraulic motor 14 to a shift state corresponding to the operation position of the main transmission lever 32, and the main transmission lever 32 is operated. The main transmission 10 is changed in a stepless manner to change the driving speed of the traveling device 1 and the hydraulic motor 14 is switched to a low, medium, and high speed three-stage sub-shift state. The vehicle can travel while performing sub-shifts that change the driving speed of the device 1 at once.

移動走行の際や、倒伏が激しい穀稈を刈り取るなどの作業走行の際、複数個の副変速手段33,34,35から所定の副変速手段33,34,35を選択して押し操作する。すると、押し操作された副変速手段33,34,35が出力する副変速指令のために変速制御手段27が副変速制御モードに切り換わり、変速制御手段27は、レバー位置検出手段37による検出情報を基に主変速モータ25を操作して主変速装置10を主変速レバー32の操作位置に対応する変速状態に切り換え操作する。これとともに、変速制御手段27は、副変速手段33,34,35からの副変速指令を基に副変速モータ26をレバー位置検出手段37による検出情報に優先して操作して油圧モータ14を副変速指令に対応する副変速状態に切り換え操作するのであり、高速用の副変速手段33を操作した場合には、油圧モータ14を高速の副変速状態に固定しながら、標準用の副変速手段34を操作した場合には、油圧モータ14を中速の副変速状態に固定しながら、倒伏用の副変速手段35を操作した場合には、油圧モータ14を低速の副変速状態に固定しながら、いずれの場合も、主変速レバー32によって主変速装置10を無段階に変速操作して走行装置1の駆動速度を変更しながら走行することができる。   When traveling, or during work traveling such as harvesting cereals that are heavily laid down, a predetermined sub-transmission means 33, 34, 35 is selected from a plurality of sub-transmission means 33, 34, 35 and pushed. Then, the shift control means 27 switches to the sub shift control mode for the sub shift command output by the pushed sub shift means 33, 34, 35, and the shift control means 27 detects the information detected by the lever position detection means 37. Based on this, the main transmission motor 25 is operated to switch the main transmission 10 to a shift state corresponding to the operation position of the main transmission lever 32. At the same time, the transmission control means 27 operates the auxiliary transmission motor 26 with priority over the detection information from the lever position detection means 37 based on the auxiliary transmission commands from the auxiliary transmission means 33, 34, 35, and operates the auxiliary hydraulic motor 14. When the high-speed sub-transmission means 33 is operated, the standard sub-transmission means 34 is fixed while fixing the hydraulic motor 14 to the high-speed sub-transmission state. Is operated while the hydraulic motor 14 is fixed to the medium speed sub-shift state, and when the sub-transmission means 35 for lodging is operated, the hydraulic motor 14 is fixed to the low-speed sub shift state. In any case, it is possible to travel while changing the drive speed of the traveling device 1 by changing the driving speed of the traveling device 1 steplessly with the main transmission lever 32.

また、左右一対の操向クラッチ21,21を操作して機体を旋回走行させる際など、走行装置1の駆動負荷が設定値以上になると、このときの主変速レバー32の操作位置にかかわらず、かつ、副変速手段33による高速副変速指令や、副変速手段34による中速副変速指令にかかわらず、変速制御手段27が油圧モータ14を低速の副変速状態に切り換え操作するのであり、走行装置1の駆動負荷の増大に起因するエンジン8の負荷増大を抑制しながら走行することができる。   In addition, when the driving load of the traveling device 1 becomes a set value or more, such as when the pair of left and right steering clutches 21 and 21 are operated to turn the aircraft, regardless of the operation position of the main transmission lever 32 at this time, In addition, regardless of the high-speed sub-transmission command from the sub-transmission unit 33 or the medium-speed sub-transmission command from the sub-transmission unit 34, the shift control unit 27 switches the hydraulic motor 14 to the low-speed sub-transmission state. The vehicle can travel while suppressing an increase in the load on the engine 8 caused by an increase in the driving load of 1.

以下、本発明の実施形態について説明する。この場合、本発明の実施形態において前述の参考形態と異なる部分について説明しており、その他の部分は前述の参考形態と同様である。
(本発明の実施形態)
図10(イ)は操作部構造を備えた走行用変速操作装置を示し、この走行用変速操作装置の操作部構造にあっては、主変速レバー32の握り部32aに1個の副変速手段42を設けてある。
この副変速手段42は、押しボタン式の副変速スイッチで成り、押し操作されると、副変速モード指令と副変速指令を変速制御手段27に出力するようになっている。さらに、この副変速手段42は、図10(ロ)に示す如く押し操作される毎に副変速指令を高速副変速指令と中速副変速指令と低速副変速指令とに順次に切り換えて出力するようになっている。
Hereinafter, embodiments of the present invention will be described. In this case, in the embodiment of the present invention, portions different from the above-described reference embodiment are described, and other portions are the same as the above-described reference embodiment.
(Embodiment of the present invention)
Figure 10 (a) shows a traveling speed change operation apparatus having a operation section structure, with the operation section structure of the travel gear operating device, one of the auxiliary transmission to the grip portion 32a of the main shift lever 32 Means 42 are provided.
The sub-transmission means 42 is composed of a push button type sub-transmission switch, and outputs a sub-transmission mode command and a sub-transmission command to the shift control means 27 when pressed. Further, the sub-transmission means 42 sequentially switches the sub-shift command to the high-speed sub-shift command, the medium-speed sub-shift command, and the low-speed sub-shift command each time it is pushed as shown in FIG. It is like that.

〔別の実施形態〕
上記実施形態の如く主変速レバー32をレバー位置検出手段37、変速制御手段27、主変速モータ25を介して主変速装置10の油圧ポンプ13の斜板操作軸に連係させることにより、主変速レバー32による主変速装置10の変速操作を可能に構成する他、図11に示す如く構成して実施してもよい。すなわち、主変速レバー32を主変速装置10の油圧ポンプ13の斜板操作軸にリンクを利用した機械式連動手段によって連動させることにより、主変速レバー32による主変速装置10の変速操作を可能にする構成を採用して実施してよく、この場合も本発明の目的を達成することができる。
[Another embodiment]
The main transmission lever 32 is linked to the swash plate operating shaft of the hydraulic pump 13 of the main transmission 10 via the lever position detection means 37, the transmission control means 27, and the main transmission motor 25 as in the above embodiment. In addition to being configured to enable the shifting operation of the main transmission 10 by 32, it may be configured as shown in FIG. In other words, the main transmission lever 32 can be operated to shift the main transmission 10 by the main transmission lever 32 by interlocking the main transmission lever 32 with the swash plate operation shaft of the hydraulic pump 13 of the main transmission 10 by mechanical interlocking means using a link. In this case, the object of the present invention can be achieved.

副変速モータ26に替えてシリンダやソレノイドなどを採用し、これらによって油圧モータ14の副変速状態を切り換えるように構成して実施しても、本発明の目的を達成することができる。従って、これら副変速モータ26、シリンダ、ソレノイドなどを総称して副変速アクチュエータ26と呼称する。   The object of the present invention can also be achieved by adopting a cylinder, a solenoid or the like instead of the auxiliary transmission motor 26 and switching the auxiliary transmission state of the hydraulic motor 14 by these. Accordingly, the auxiliary transmission motor 26, the cylinder, the solenoid, and the like are collectively referred to as the auxiliary transmission actuator 26.

コンバインの他、トラクター、芝刈り機など各種の作業を行なう車両に装備される走行用変速操作装置にも本発明は適用できる。従って、これら、コンバイン、トラクター、芝刈り機などを総称して作業車と呼称する。 In addition to the combine, the present invention can also be applied to a traveling speed change operation device installed in a vehicle that performs various operations such as a tractor and a lawn mower. Therefore, these combine, tractor, lawn mower and the like are collectively referred to as a work vehicle.

参考形態のコンバイン全体の側面図Side view of the entire reference combine 参考形態の伝動系統図 Reference system transmission system diagram 参考形態の主変速レバー、副変速手段の配設部の平面図Plan view of the arrangement of the main transmission lever and auxiliary transmission means of the reference form 参考形態の変速制御のブロック図Block diagram of shift control of reference form 参考形態の変速制御のフロー図Flow chart of reference form shift control 参考形態の変速制御のフロー図Flow chart of reference form shift control 参考形態の変速制御のフロー図Flow chart of reference form shift control 参考形態の変速制御のフロー図Flow chart of reference form shift control 参考形態の主変速レバーの操作位置と、変速制御モードと、油圧モータの変速状態との関係を示す説明図Explanatory drawing which shows the relationship between the operation position of the main transmission lever of a reference form , a transmission control mode, and the transmission state of a hydraulic motor. (イ)は、本発明の実施形態の副変速手段の配設部を示す側面図、(ロ)は、副変速手段の副変速指令の出力を示す説明図(A) is a side view showing the arrangement portion of the auxiliary transmission means of the embodiment of the present invention , (B) is an explanatory diagram showing the output of the auxiliary transmission command of the auxiliary transmission means 別の実施形態を備えた主変速レバー連係構造を示す説明図Explanatory drawing which shows the main transmission lever linkage structure provided with another embodiment.

4 刈取り前処理部
4e 入力軸
8 エンジン
10 静油圧式無段変速装置
12 出力軸
13 油圧ポンプ
14 油圧モータ
20 ミッションケース
22 作業用出力軸
26 アクチュエータ
32 変速レバー
42 変速スイッチ
4 mowing pre-processing section
4e Input shaft
8 Engine 10 Hydrostatic continuously variable transmission
12 Output shaft 13 Hydraulic pump 14 Hydraulic motor
20 mission case
22 Work output shaft 26 Actuator 32 Shift lever 42 Shift switch

Claims (2)

油圧ポンプと油圧モータとを備えた静油圧式無段変速装置を備え、
前記油圧ポンプを、前進伝動状態及び後進伝動状態に無段階に変速自在な可変容量形に構成し、
前記油圧モータを、移動走行用の高速、標準用の中速、及び倒伏が激しい穀稈を刈り取る倒伏用の低速に操作自在な可変容量形に構成して
前記油圧ポンプを操作するもので人為的に操作される変速レバーと、
前記油圧モータを操作するアクチュエータと、前記アクチュエータを操作するもので人為的に操作される変速スイッチとを備えて、
前記変速スイッチを前記変速レバーに備えてあるコンバイン。
A hydrostatic continuously variable transmission equipped with a hydraulic pump and a hydraulic motor;
The hydraulic pump is configured in a variable displacement type that is variable steplessly in a forward transmission state and a reverse transmission state,
The hydraulic motor is configured in a variable capacity type that can be operated at a high speed for traveling, a medium speed for standard use, and a low speed for lodging to harvest cereals that are severely laid down ,
A shift lever that is operated manually by the hydraulic pump;
An actuator for operating the hydraulic motor, and a shift switch for manually operating the actuator to operate the actuator,
A combine having the shift switch on the shift lever .
エンジンから刈取り前処理部に駆動力を伝達する作業用伝動系に、前記油圧ポンプと、前記油圧モータと、ミッションケースとを直列に配置して、
前記油圧モータの出力軸の駆動力を前記ミッションケースの作業用出力軸に伝達し、前記作業用出力軸の駆動力を前記刈取り前処理部の入力軸に伝達するように構成してある請求項1に記載のコンバイン。
In the working transmission system that transmits the driving force from the engine to the pre-cutting processing unit, the hydraulic pump, the hydraulic motor, and the transmission case are arranged in series,
The driving force of the output shaft of the hydraulic motor is transmitted to the work output shaft of the transmission case, and the driving force of the work output shaft is transmitted to the input shaft of the pre-cutting processing unit. The combine according to 1.
JP2008165732A 2008-06-25 2008-06-25 Combine Active JP4897744B2 (en)

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JP5134557B2 (en) * 2009-01-09 2013-01-30 株式会社クボタ Combine traveling control device
JP5069698B2 (en) * 2009-01-09 2012-11-07 株式会社クボタ Mowing harvester
JP5129780B2 (en) * 2009-05-15 2013-01-30 株式会社クボタ Combine vehicle speed control device
US9140356B2 (en) * 2012-07-04 2015-09-22 Kanzaki Kokyukoki Mfg. Co., Ltd. Travel control unit of working vehicle

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JP3371438B2 (en) * 1992-03-12 2003-01-27 井関農機株式会社 Combine transmission
JPH0617928A (en) * 1992-07-03 1994-01-25 Kubota Corp Hydrostatic continuously variable transmission for travel
JPH1194076A (en) * 1997-09-22 1999-04-09 Seirei Ind Co Ltd Hydrostatic pressure type transmission
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