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JP4393237B2 - Combined travel shift operating device - Google Patents

Combined travel shift operating device
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JP4393237B2
JP4393237B2JP2004078628AJP2004078628AJP4393237B2JP 4393237 B2JP4393237 B2JP 4393237B2JP 2004078628 AJP2004078628 AJP 2004078628AJP 2004078628 AJP2004078628 AJP 2004078628AJP 4393237 B2JP4393237 B2JP 4393237B2
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transmission
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speed
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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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Translated fromJapanese

本発明は、エンジンから走行装置に動力伝達する伝動系に直列に設けた主変速装置と副変速装置を備えたコンバインの走行用変速操作装置に関する。TECHNICAL FIELD The present invention relates to acombined traveling speed change operation device including a main transmission device and a sub-transmission device provided in series with a transmission system for transmitting power from an engine to a traveling device.

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されたものがあった。
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 continuouslyvariable transmission 10 as shown in Patent Document 1, for example. The power from theoutput shaft 13 of thetransmission 10 is changed by the high speed transmission gear 18 and the shift gear 19 of the first shaft S1, and the highspeed input gear 20, the mediumspeed input gear 21 and the lowspeed input gear 22 of the second shaft S2. In some cases, the sub-transmission device includes amain transmission lever 6 for shifting the continuouslyvariable transmission 10 and asub-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 continuouslyvariable transmission 10 as a main transmission is operated to be shifted by amain transmission lever 6 and a sub transmission is operated to be shifted by asub transmission lever 7.

また、たとえば特許文献2に示されるように、主変速装置Bを、第1,2,3,4油圧クラッチC1,C2,C3,C4の切り換えによって前進3段と後進2段に変速するように構成し、副変速装置Aを、油圧シリンダDによるクラッチスリーブ15のシフト操作によって高速伝動状態と低速伝動状態に変速するように構成し、第1,2,3,4油圧クラッチC1,C2,C3,C4、及び油圧シリンダDを操作する一つのロータリバルブVを備え、このロータリバルブVの回転スプールVSにピニオンギヤ27、セクタギヤ28を介して連動した変速レバー30を備え、変速レバー30によるロータリバルブVの切り換え操作によって副変速装置Aと主変速装置Bを制御して、副変速装置Aと主変速装置Bが所定の変速状態になった中立や伝動状態が現出されるようになったものがあった。
すなわち、変速レバー30を操作位置Nに操作すると、ロータリバルブVが中立位置Nになり、副変速装置A及び主変速装置Bが中立位置になった中立状態が現出される。変速レバー30を操作位置F1に操作すると、ロータリバルブVが前進1速F1の操作位置になり、副変速装置Aが低速伝動状態に、主変速装置Bが前進1速にそれぞれなった前進1速の変速状態が現出される。変速レバー30を操作位置F2に操作すると、ロータリバルブVが前進2速F2の操作位置になり、副変速装置Aが低速伝動状態に、主変速装置Bが前進2速にそれぞれなった前進2速の変速状態が現出される。変速レバー30を操作位置F3に操作すると、ロータリバルブVが前進3速F3の操作位置になり、副変速装置Aが低速伝動状態に、主変速装置Bが前進3速にそれぞれなった前進3速の変速状態が現出される。変速レバー30を操作位置F4に操作すると、ロータリバルブVが前進4速F4の操作位置になり、副変速装置Aが高速伝動状態に、主変速装置Bが前進1速にそれぞれなった前進4速の変速状態が現出される。変速レバー30を操作位置F5に操作すると、ロータリバルブVが前進5速F5の操作位置になり、副変速装置Aが高速伝動状態に、主変速装置Bが前進2速にそれぞれなった前進5速の変速状態が現出される。変速レバー30を操作位置F6に操作すると、ロータリバルブVが前進6速F6の操作位置になり、副変速装置Aが高速伝動状態に、主変速装置Bが前進3速にそれぞれなった前進6速の変速状態が現出されるものがあった。
つまり、主変速装置A及び副変速装置Bを一本の変速レバー30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されたものがあった。
For example, as shown inPatent Document 2, the main transmission B is shifted between three forward speeds and two reverse speeds by switching the first, second, third, and fourth hydraulic clutches C1, C2, C3, and C4. And the auxiliary transmission A is configured to shift between the high speed transmission state and the low speed transmission state by the shift operation of the clutch sleeve 15 by the hydraulic cylinder D, and the first, second, third and fourth hydraulic clutches C1, C2, C3. , C4, and a single rotary valve V for operating the hydraulic cylinder D, a rotary lever VS of the rotary valve V is provided with ashift lever 30 linked via apinion gear 27 and a sector gear 28, and the rotary valve V by theshift lever 30 is provided. The sub-transmission A and the main transmission B are controlled by the switching operation, so that the neutral transmission and transmission when the sub-transmission A and the main transmission B are in a predetermined shift state are controlled. State was something became to appear.
That is, when thespeed change lever 30 is operated to the operation position N, the neutral state in which the rotary valve V is in the neutral position N and the auxiliary transmission A and the main transmission B are in the neutral position appears. When thetransmission lever 30 is operated to the operation position F1, the rotary valve V is set to the operation position of the first forward speed F1, the auxiliary transmission A is in the low-speed transmission state, and the main transmission B is the first forward speed. The shift state is displayed. When thetransmission lever 30 is operated to the operation position F2, the rotary valve V is set to the operation position of the second forward speed F2, the sub transmission A is in the low-speed transmission state, and the main transmission B is the second forward speed. The shift state is displayed. When thetransmission lever 30 is operated to the operation position F3, the rotary valve V is set to the operation position of the third forward speed F3, the auxiliary transmission A is in the low-speed transmission state, and the main transmission B is the third forward speed. The shift state is displayed. When thetransmission lever 30 is operated to the operation position F4, the rotary valve V is set to the operation position of the forward fourth speed F4, the auxiliary transmission A is in the high speed transmission state, and the main transmission B is the first forward speed. The shift state is displayed. When thetransmission lever 30 is operated to the operation position F5, the rotary valve V is set to the operation position of the fifth forward speed F5, the auxiliary transmission A is in the high-speed transmission state, and the main transmission B is the second forward speed. The shift state is displayed. When thetransmission lever 30 is operated to the operation position F6, the rotary valve V is set to the operation position of the sixth forward speed F6, the auxiliary transmission A is in the high-speed transmission state, and the main transmission B is the third forward speed. There were some cases where the shift state of was revealed.
That is, there is a configuration in which the traveling speed change operation device is configured such that the main speed change device A and the sub speed change device B are operated to be changed by asingle shift lever 30.

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)

たとえばコンバインにおいて、刈り取るべき穀稈に着粒や倒伏度合いなどの変化があれば、その変化にかかわらず引起しなどが適切な速度で行なわれるように走行速度を調節しながら作業されるが、主変速装置及び副変速装置をそれぞれ専用の操作手段によって変速操作する走行用変速操作装置を採用した場合、主変速装置を変速するための操作手間と、副変速装置を変速するための操作手間とを掛けるという煩わしさがあった。  For example, in a combine, if there is a change in the grain size or the level of lodging of the cereal to be harvested, the work is performed while adjusting the running speed so that the wake-up occurs at an appropriate speed regardless of the change. In the case of adopting a traveling speed change operation device for operating the speed change device and the sub-transmission device respectively with dedicated operation means, the operation time for shifting the main transmission device and the operation time for shifting the sub-transmission device are reduced. There was a hassle of hanging.

また、タンクに貯まった穀粒を降ろすなど、刈取り作業をしない走行、いわゆる移動走行を行なう際、刈取り作業を行なう場合よりも高速で変速しながら走行されるが、主変速装置及び副変速装置を1本の変速レバーによって変速操作する走行用変速操作装置を採用した場合、変速レバーの操作域の副変速装置が低速側になる部分と、副変速装置が高速側になる部分とから高速側部分を選択してこの高速側部分で変速レバーを操作する必要があり、変速レバーを操作するための操作域を選択するという煩わしさがあった。  Also, when running without cutting work, such as moving down the grain stored in the tank, so-called mobile running, it runs while shifting at a higher speed than when cutting, but the main transmission and sub-transmission are In the case of adopting a traveling speed change operation device that performs a speed change operation with one speed change lever, a portion of the speed change lever operating range from the portion where the sub-transmission device is on the low speed side and the portion where the sub-transmission device is on the high speed side to the high speed side portion And it is necessary to operate the speed change lever at this high speed side portion, and there is an annoyance of selecting an operation range for operating the speed change lever.

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の走行用変速操作装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide acombined traveling speed change operation device capable of advantageously performing an appropriate speed change traveling according to the operation travel on the operation surface or the like during work travel and mobile travel.

本第1発明にあっては、エンジンから走行装置に動力伝達する伝動系に直列に設けた主変速装置と副変速装置を備えたコンバインの走行用変速操作装置であって、
前記主変速装置を変速操作する主変速レバーの操作位置を検出するレバー位置検出手段と、副変速指令を出力する副変速手段と、前記副変速装置を変速操作する副変速アクチュエータとを設け、前記主変速装置を前記主変速レバーの操作位置に対応する変速状態になるように操作し、かつ、前記レバー位置検出手段による検出情報に基づいて前記副変速装置が前記主変速レバーの操作位置に対応する変速状態に切り換えられるように前記副変速アクチュエータを操作する主副変速制御モードと、前記主変速装置を前記主変速レバーの操作位置に対応する変速状態になるように操作し、かつ、前記副変速手段からの副変速指令に基づいて前記副変速装置が前記副変速手段からの副変速指令に対応する変速状態に切り換えられて固定されるように前記レバー位置検出手段による検出情報に優先して前記副変速アクチュエータを操作する副変速制御モードとに切り換え自在な変速制御手段を設け、前記変速制御手段を前記主副変速制御モードと前記副変速制御モードとに切り換えるモード切り換え手段を設け、前記副変速手段が、移動走行用の高速副変速指令と、標準用の中速副変速指令と、倒伏の激しい穀稈を刈り取る倒伏用の低速副変速指令とを指令自在に構成され、前記副変速制御モードにおいて、前記副変速装置が、前記高速副変速指令に対応する所定の高速変速状態と、前記中速副変速指令に対応する所定の中速変速状態と、前記低速副変速指令に対応する所定の低速変速状態とに切り換えられるように構成されている。
In the first aspect of the present invention, there is acombined traveling speed change operation device including a main transmission and an auxiliary transmission that are provided in series with a transmission system that transmits power from the engine to the traveling device,
A lever position detecting means for detecting an operation position of the main shift lever of the speed change operation of the main speed changedevice,and a subtransmission means for outputting the sub-shiftcommand,and an auxiliary transmission actuator for gear shift operation to the auxiliary speed change device isprovided, wherein It operates the main speed change device so as to shift state corresponding to the operating position of the main speed change lever, and,on the basis of the information detected by the lever position detector auxiliary transmission device corresponds to the operating position ofthe main speed change lever A main auxiliary transmission control mode for operating the auxiliary transmission actuator so asto beswitched to a transmission state tobe operated, the main transmissionis operated so as to be in a transmission state corresponding to an operation position of the main transmission lever, and asthe subtransmission deviceis fixed is switched to the corresponding shifting state to the sub speed change command fromthe subtransmission meansbased on the sub-shift command from the shift means In preference to the information detected by theserial lever position detecting means provided freely shift control means switchable between auxiliary transmission control mode for operating the auxiliary transmission actuator, the subtransmission controlling said shift control means and the main auxiliary shifting control mode Mode switching means for switching between modes is provided, and the sub-transmission means includes a high-speed sub-shift command for moving travel, a medium-speed sub-shift command for standard use, and a low-speed sub-shift command for lodging that harvests harsh fallen culms. And in the sub-shift control mode, the sub-transmission device has a predetermined high-speed shift state corresponding to the high-speed sub-shift command and a predetermined medium-speed shift corresponding to the medium-speed sub-shift command. And a predetermined low-speed shift state corresponding to the low-speed sub-shift command.

すなわち、モード切り換え手段によって変速制御手段を主副変速制御モードに切り換えると、主変速レバーを操作すれば、主変速レバーの操作のために主変速装置が主変速レバーの操作位置に対応する変速状態に操作され、この主変速装置の変速操作に併せ、変速制御手段がレバー位置検出手段による検出結果を基に副変速アクチュエータを操作して、副変速装置を主変速レバーの操作位置に対応する変速状態に操作する。これにより、主変速装置も副変速装置も主変速レバーの操作位置に対応する変速状態になる。  That is, when the shift control unit is switched to the main / sub shift control mode by the mode switching unit, the main transmission device can be operated in accordance with the operation position of the main shift lever for the operation of the main shift lever by operating the main shift lever. In conjunction with the speed change operation of the main transmission, the speed change control means operates the sub speed change actuator based on the detection result of the lever position detection means, so that the sub speed change gear corresponds to the operation position of the main speed change lever. Manipulate state. As a result, both the main transmission device and the sub-transmission device enter a shift state corresponding to the operation position of the main transmission lever.

モード切り換え手段によって変速制御手段を副変速制御モードに切り換えると、主変速レバーを操作すれば、主変速レバーの操作のために主変速装置が主変速レバーの操作位置に対応する変速状態に操作される。この場合、副変速手段を操作すれば、変速制御手段が副変速手段からの副変速指令を基に、レバー位置検出手段による検出結果に優先して副変速アクチュエータを操作して、副変速装置を副変速指令に対応する変速状態に操作する。これにより、主変速装置は、主変速レバーの操作位置に対応する変速状態になり、副変速装置は、主変速レバーによる主変速装置の変速操作とは無関係に、副変速指令に対応する変速状態になる。When switching the shift control means by the mode switching means to the sub speed change control mode, the main if the shift lever operation, the main speed change device for operation of the main shift lever isoperated to a shift state corresponding to the operating position of the main shift lever The In this case, if the auxiliary transmission means is operated, the transmission control means operates the auxiliary transmission actuator in preference to the detection result by the lever position detection means based on the auxiliary transmission command from the auxiliary transmission means, The shift operation corresponding to the sub shift command is performed. As a result, the main transmission is in a shift state corresponding to the operation position of the main shift lever, and the sub-transmission is in a shift state corresponding to the sub-shift command regardless of the shift operation of the main transmission by the main shift lever. become.

従って、本第1発明によれば、作業走行を行なうに当たり、変速制御手段を主副変速制御モードに切り換えることにより、主変速レバーを操作するだけで操作簡単に主変速装置も副変速装置も変速操作して作業が適切に行なえる走行速度を現出しながら作業することができる。また、作業を行なう際であっても、植立穀稈の倒伏が激しい場合など、変速制御手段を副変速制御モードに切り換え、副変速手段によって副変速装置を主変速装置とは無関係に単独で変速操作して低速側に固定しておき、副変速装置を高速側に切り換えて高速走行してしまうことがないように注意を払わなくとも楽に変速レバーを操作して、穀稈の状況に応じた適切な走行速度を現出しながら走行することができるなど、副変速装置を所定の変速状態に固定しながら主変速装置を所望の変速状態に変速操作して有利に作業することもできる。  Therefore, according to the first aspect of the present invention, when the work travel is performed, the shift control means is switched to the main / sub shift control mode, so that both the main transmission and the sub transmission can be shifted easily by operating the main shift lever. It is possible to work while displaying the running speed at which the work can be performed appropriately. In addition, even when working, when the planted cereals are prone to fall down, the transmission control means is switched to the auxiliary transmission control mode, and the auxiliary transmission is used independently of the main transmission by the auxiliary transmission means. Operate the shift lever and fix it on the low speed side, switch the auxiliary transmission to the high speed side and operate the shift lever easily without depending on the situation of the cereal so that it will not run at high speed It is also possible to work advantageously by shifting the main transmission to a desired shift state while fixing the auxiliary transmission to a predetermined shift state, such as being able to travel while displaying an appropriate travel speed.

移動走行を行なうに当たり、副変速手段によって副変速装置を主変速装置とは無関係に単独で変速操作して高速側に固定しておき、副変速装置を低速側に切り換えてしまうことがないように注意を払わなくとも楽に変速レバーを操作して、副変速装置を高速側に維持しながら変速走行することができる。  When carrying out traveling, the sub-transmission means does not change the sub-transmission device to the low-speed side by shifting the sub-transmission device independently of the main transmission and fixing it to the high-speed side. Even if care is not taken, the speed change lever can be operated easily, and the speed change drive can be performed while maintaining the auxiliary transmission on the high speed side.

本第2発明にあっては、本第1発明の構成において、前記モード切り換え手段を、主副変速モード選択手段と前記副変速手段とで構成し、前記主副変速モード選択手段によって主副変速モード指令を出力して前記変速制御手段を前記主副変速制御モードに切り換え操作し、前記副変速手段によって前記副変速指令と共に副変速モード指令を出力して前記変速制御手段を前記副変速制御モードに切り換え操作するように構成してある。This In the second aspect, in the structure of the present first invention, the mode switching means,constituted by the said auxiliary transmission section main subtransmission mode selectingmeans, main and sub transmission by the main sub-gear change mode selecting means outputs a mode command switching operating the shift control unit tothe main sub-shifting control mode, the subtransmission means bysaid auxiliary transmission command together with the subtransmissionthe said shift control means mode command output to the auxiliary transmission control mode It is configured to perform switching operation.

すなわち、副変速手段を操作すると、この副変速手段が副変速モード指令を出力するとともに副変速指令を出力し、変速制御手段が副変速モード指令に基づいて副変速制御モードに切り換わり、副変速アクチュエータを操作して副変速装置を副変速指令に対応する変速状態に切り換え操作する。これにより、副変速手段を操作すれば、主変速レバーによって主変速装置を副変速装置とは無関係に単独で変速操作することができるようになり、かつ、副変速装置を主変速装置とは無関係に単独で副変速指令に対応した変速状態に変速操作することができる。That is, when the sub-transmission unit is operated, the sub-transmission unit outputs a sub-transmission mode command and a sub-transmission command, and the shift control unit switches to the sub-transmission control modebased on the sub-transmission mode command. The actuator is operated to switch the auxiliary transmission to a shift state corresponding to the auxiliary transmission command. As a result, if the auxiliary transmission means is operated, the main transmission can be operated independently of the auxiliary transmission by the main transmission lever, and the auxiliary transmission is independent of the main transmission. In addition, it is possible to perform a shift operation independently to a shift state corresponding to the auxiliary shift command.

従って、本第2発明によれば、主変速レバーによって主変速装置も副変速装置も変速操作する状態から、副変速装置を所定の変速状態に固定しながら主変速レバーによって主変速装置を変速操作する状態に切り換えるに当たり、副変速装置を所定の変速状態に操作するための副変速指令を出力する副変速手段を操作するだけで操作簡単に切り換えることができる。  Therefore, according to the second aspect of the invention, from the state where the main transmission and the sub-transmission are shifted by the main shift lever, the main transmission is shifted by the main shift lever while fixing the sub-transmission to a predetermined shift state. When switching to the state to be performed, the operation can be easily switched only by operating the sub-transmission means for outputting the sub-transmission command for operating the sub-transmission device to the predetermined shift state.

本第3発明にあっては、本第1又は第2発明の構成において、前記主変速装置静油圧式無段変速装置で構成して、前記静油圧式無段変速装置の油圧ポンプを操作することで前記主変速装置を変速操作するように構成し、前記副変速装置を前記静油圧式無段変速装置油圧モータで構成し、前記油圧モータを、前記高速変速状態と、前記中速変速状態と、前記低速変速状態とに操作自在な可変容量形に構成してある。In the present third invention, in the configuration of the first or second invention,constitutethe main speed change device by the hydrostatic continuously variabletransmission, operates the hydraulic pump of the hydrostatic continuously variable transmission said main transmission configured to shift operations by, the auxiliary speed change deviceconstituted by a hydraulic motorofthe hydrostatic continuously variabletransmission, said hydraulic motor, and the high-speed shifting state, said medium speed The variable displacement type is configured to be freely operated between the speed change state and the low speed speed change state.

すなわち、副変速装置を所定の変速状態に固定しながら主変速レバーによって主変速装置を変速操作する変速形態を採用するに当たり、副変速装置を切り換え可能な複数の変速状態のいずれの変速状態に固定した場合でも、主変速レバーによって主変速装置を中立状態から高速側に変速操作していくことができる。そして、主変速装置を構成する静油圧式無段変速装置の油圧モータとして可変容量形の油圧モータを採用して副変速装置を構成するものである。  That is, when adopting a shift mode in which the main transmission is shifted by the main transmission lever while fixing the sub-transmission to a predetermined shift state, the sub-transmission is fixed to any one of a plurality of shift states that can be switched. Even in this case, the main transmission can be shifted from the neutral state to the high speed side by the main transmission lever. Then, a variable displacement hydraulic motor is adopted as the hydraulic motor of the hydrostatic continuously variable transmission that constitutes the main transmission to constitute the auxiliary transmission.

従って、本第3発明によれば、副変速装置を如何なる変速状態に固定する場合でも、主変速装置の変速操作を中立状態からスタートして機体走行を開始させることができる。しかも、主変速装置を構成する油圧モータを利用して副変速装置を構造簡単に構成して経済面で有利に得ることができる。  Therefore, according to the third aspect of the invention, regardless of the speed change state of the subtransmission, the speed change operation of the main transmission can be started from the neutral state to start the vehicle running. In addition, the sub-transmission can be constructed simply with the use of a hydraulic motor constituting the main transmission, which can be advantageously obtained economically.

本第4発明にあっては、本第1〜3発明のいずれか一つの発明の構成において、前記副変速手段として複数の副変速スイッチを設けるとともに、各副変速スイッチは、前記副変速装置を対応する変速状態に変速するべき副変速指令を出力するように構成してある。  According to the fourth aspect of the present invention, in the configuration of any one of the first to third aspects of the present invention, a plurality of auxiliary transmission switches are provided as the auxiliary transmission means, and each auxiliary transmission switch includes the auxiliary transmission device. A sub shift command to shift to the corresponding shift state is output.

すなわち、副変速スイッチから所定の副変速スイッチを選択して操作すれば、その副変速スイッチからの副変速指令を基に、変速制御手段が副変速アクチュエータを操作して副変速装置を操作された副変速スイッチに対応する変速状態に切り換え操作する。これにより、副変速手段として変速レバーを採用した場合、変速レバーを目標操作位置以上に操作してしまい、副変速装置を操作目標の変速状態と異なる変速状態に操作してしまうという誤操作が発生するが、この誤操作が発生しないようにしながら副変速操作が行なれるようにできる。  That is, if a predetermined sub-shift switch is selected and operated from the sub-shift switch, the shift control means operates the sub-shift actuator and operates the sub-transmission device based on the sub-shift command from the sub-shift switch. The operation is switched to the shift state corresponding to the sub-shift switch. As a result, when a shift lever is employed as the sub-transmission means, the shift lever is operated beyond the target operation position, and an erroneous operation occurs in which the sub-transmission device is operated in a shift state different from the operation target shift state. However, the sub-shift operation can be performed while preventing this erroneous operation from occurring.

従って、本第4発明によれば、副変速手段を過剰操作のない状態で操作させて副変速装置が所望の変速状態に正確に変速操作されるようにできる。  Therefore, according to the fourth aspect of the present invention, the sub-transmission unit can be operated without excessive operation so that the sub-transmission device can be accurately shifted to the desired shift state.

以下、本発明の実施例を図面に基づいて説明する。
図1に示すように、左右一対のクローラ式走行装置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。
Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, a front part of abody frame 3 of a self-propelled machine body equipped with a pair of left and right crawler type traveling devices 1, a boarding type driving unit having a driver'sseat 2, etc. The base of theprocessing unit frame 4a is connected to be pivotable about the horizontal axis of the machine body, and thelift cylinder 5 is interlocked with thepreprocessing unit frame 4a, and the threshingdevice 6 and thegrain tank 7 are connected to themachine body frame 3. 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 thelift cylinder 5 is operated, thelift cylinder 5 swings thepre-processing unit frame 4a up and down with respect to themachine body frame 3 for cutting. Thepre-processing unit 4 is raised and moved up and down to a lowering work state in which the lower part of thedevice 4b is located near the ground, and a raising non-working state in which theraising device 4b is raised above the ground. When thepre-cutting processing unit 4 is in the descending work state and the self-propelled machine is traveling, thepre-cutting processing unit 4 raises the planted culm and raises it by thedevice 4b and supplies it to the clippertype cutting device 4c. The harvested cereals are conveyed toward the rear of the machine body by the conveyingdevice 4d and supplied to the start end of the threshingfeed chain 6a of the threshingdevice 6. The threshingdevice 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 threshingfeed chain 6a, and performs the threshing process. Thegrain tank 7 collects and stores the threshing grains from the threshingdevice 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'sseat 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 apreprocessing 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 theoutput shaft 8a of the engine 8 to theinput shaft 11 of themain transmission 10 using thetransmission belt 9, and the driving force of theoutput shaft 12 of themain transmission 10 is transmitted. The transmission is transmitted to themission case 20 and is transmitted to the pair of left andright steering clutches 21 via a gear type reduction mechanism (not shown) inside themission case 20, and the rotational output of theleft steering clutch 21 is transmitted to themission case 20. Is output from the left lateral side and transmitted to thecrawler drive sprocket 1a of the left traveling device 1, and the rotational output of theright steering clutch 21 is output from the right lateral side of themission case 20 to be crawler of the right traveling device 1. It is configured to transmit to thedrive sprocket 1a.
The work transmission system transmits the drive force of theoutput shaft 12 of themain transmission 10 to thework output shaft 22 of thetransmission case 20, and uses thedrive belt 23 to drive the drive force of thework output shaft 22. It is configured to transmit to theinput shaft 4 e of thepre-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。
Themain transmission 10 is an axial plunger type and variable displacement typehydraulic pump 13 configured such that a cylinder block (not shown) is driven by theinput shaft 11, and pressure oil from thehydraulic pump 13. And an axial plunger typehydraulic motor 14 that is driven by theoutput shaft 12 and outputs from theoutput shaft 12 to form a hydrostatic continuously variable transmission.
That is, when the swash plate angle of thehydraulic 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 thehydraulic 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。  Thehydraulic motor 14 constituting themain transmission 10 is configured as a variable displacement hydraulic motor having a capacity of one or more times the capacity of thehydraulic pump 13. As a result, thehydraulic motor 14 is a sub-transmission device provided in the traveling transmission system in a state where thehydraulic motor 14 is arranged in series with themain transmission device 10, and an operation of changing the swash plate angle of thehydraulic 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 electricmain transmission motor 25 is interlocked with a swash plate operating shaft (not shown) of thehydraulic pump 13 of themain transmission 10, and themain transmission 10 is shifted by themain transmission motor 25. Anelectric sub-transmission motor 26 is interlocked with a swash plate operating shaft (not shown) of thehydraulic motor 14, and thesub-transmission motor 26 is operated to change the speed of thehydraulic motor 14. It is. As shown in FIG. 4, themain transmission motor 25 and theauxiliary 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 mainspeed change lever 32 configured to be guided by aguide groove 31 of alever guide 30 and to be swung in the longitudinal direction of the fuselage is laterally laterally of adriver 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 thelever guide 30 are provided near the side of thelever 32. As shown in FIG. 4, the lever position detecting means 37 for detecting themain 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. Themain transmission sensor 38 that detects the shift state of themain transmission 10 based on the operation position of the swash plate operation shaft of thehydraulic pump 13 and the shift of thehydraulic motor 14 based on the operation position of the swash plate operation shaft of thehydraulic motor 14. Asub shift sensor 39 for detecting the state is also linked to the shift control means 27. Anengine speed sensor 40 that detects the output speed of the engine 8 and aspeed 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 themain transmission lever 32, and themain transmission lever 32 operates a neutral position N for operating themain transmission 10 in a neutral state, and themain 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 themain transmission 10 in the reverse transmission state. Further, it is detected which operation position in the reverse range R is operated, and the detection result is output to the shift control means 27 as an electrical signal.

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34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, thehydraulic 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 means 34 of the plurality of sub-transmission means 33,34 ,35 is pushed, thehydraulic motor 14 is switched to a medium-speed sub-transmission state in addition to the sub-transmission mode command. A medium speed sub-shift command to be executed is also output to the shift control means 27. Of the plurality ofsub-transmission units 33, 34, 35, when thesub-transmission unit 35 for lying down is pushed, thehydraulic 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。つまり、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 shiftmode selection unit 36, theshift control unit 27 switches to the main / sub shift control mode and executes the main / sub shift control. That is, as shown in FIG. 7, it is determined whether or not themain transmission lever 32 has been operated based on information detected by the leverposition detection unit 37, and if it is determined that themain transmission lever 32 has been operated, the leverposition detection unit 37. Themain transmission motor 25 is driven and operated until it is determined that themain transmission 10 is in the control target shift state based on the detection information by themain transmission sensor 38 based on the detection information by themain transmission sensor 38. The gear shift operation is performed in the gear shift state corresponding to the operation position. Further, based on the detection information by the lever position detection means 37, thesub-transmission motor 26 is driven until it is determined that thehydraulic motor 14 is in the control target sub-shift state based on the detection information by thesub-transmission sensor 39. 14 is shifted to a sub-shift state corresponding to the operation position of themain shift lever 32. More specifically, the speed change operation of thehydraulic motor 14 will be described. As shown in FIG. 9, when the mainspeed change lever 32 is operated to the low speed portion of the forward range F or the reverse range R, thehydraulic motor 14 is moved to the low speed sub-shift. When the mainspeed change lever 32 is operated to the middle speed portion of the forward range F or the reverse range R, thehydraulic motor 14 is changed to the medium speed sub-shift state, and the mainspeed change lever 32 is When operated to the high speed portion of the forward range F or the reverse range R, thehydraulic 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。つまり、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 thesub-transmission units 33, 34, 35, theshift control unit 27 switches to the sub-transmission control mode, and executes the main transmission control and the sub-transmission control. That is, as shown in FIG. 6, it is determined whether or not themain transmission lever 32 has been operated based on information detected by the leverposition detection unit 37, and if it is determined that themain transmission lever 32 has been operated, the leverposition detection unit 37. Themain transmission motor 25 is driven and operated until it is determined that themain transmission 10 is in the control target shift state based on the detection information by themain transmission sensor 38 based on the detection information by themain transmission sensor 38. The gear shift operation is performed in the gear shift state corresponding to the operation 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 thesub-transmission sensor 39 based on the high-speed sub-transmission command. Thesub-transmission motor 26 is driven until it is determined that themotor 14 is in the control target sub-shift state, and thehydraulic motor 14 is shifted to a high-speed shift state corresponding to the high-speed sub-shift command. As shown insteps 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 thesub-speed sensor 39 based on the medium speed sub-shift command. Thesub-transmission motor 26 is driven until it is determined that themotor 14 is in the control target sub-transmission state, and thehydraulic 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, thehydraulic motor 14 is based on information detected by thesub-shift sensor 39 based on this low-speed sub-shift command. Until the control target sub-shift state is determined, thesub-transmission motor 26 is driven to shift thehydraulic 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 theengine rotation sensor 40 and the detection speed detected by thespeed 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, theauxiliary 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. Thehydraulic motor 14 is shifted to a low-speed sub-shift state regardless of the operation position where themain 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, themain transmission motor 25 and thesub-transmission motor 26 are operated to switch themain transmission 10 and thehydraulic motor 14 to a shift state corresponding to the operation position of themain transmission lever 32, and themain transmission lever 32 is operated. Themain transmission 10 is changed in a stepless manner to change the driving speed of the traveling device 1 and thehydraulic 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, themain transmission motor 25 is operated to switch themain transmission 10 to a shift state corresponding to the operation position of themain transmission lever 32. At the same time, the transmission control means 27 operates theauxiliary 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 auxiliaryhydraulic motor 14. When the high-speed sub-transmission means 33 is operated, the standard sub-transmission means 34 is fixed while fixing thehydraulic motor 14 to the high-speed sub-transmission state. Is operated while thehydraulic motor 14 is fixed to the medium speed sub-shift state, and when the sub-transmission means 35 for lodging is operated, thehydraulic 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 themain 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 andright steering clutches 21 and 21 are operated to turn the aircraft, regardless of the operation position of themain transmission lever 32 at this time, In addition, regardless of the high-speed sub-transmission command from thesub-transmission unit 33 or the medium-speed sub-transmission command from thesub-transmission unit 34, theshift control unit 27 switches thehydraulic 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.

図10(イ)は、別の実施形態を有した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。
FIG. 10 (a) shows a traveling speed change operation device having an operation portion structure having another embodiment. In the operation portion structure of this travel speed change operation device, the grip portion of the mainspeed change lever 32 is shown. One auxiliary transmission means 42 is provided at 32a.
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]
As in the above-described embodiment, themain transmission lever 32 is linked to the swash plate operation shaft of thehydraulic pump 13 of themain transmission 10 through the leverposition detection unit 37, thetransmission control unit 27, and themain transmission motor 25. In addition to enabling the shift operation of themain transmission 10 by thelever 32, thelever 32 may be configured as shown in FIG. In other words, themain transmission lever 32 can be operated to shift themain transmission 10 by themain transmission lever 32 by interlocking themain transmission lever 32 with the swash plate operation shaft of thehydraulic pump 13 of themain 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 theauxiliary transmission motor 26 and switching the auxiliary transmission state of thehydraulic motor 14 by these. Accordingly, theauxiliary transmission motor 26, the cylinder, the solenoid, and the like are collectively referred to as theauxiliary transmission actuator 26.

コンバイン全体の側面図Side view of the entire combine伝動系統図Transmission system diagram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変速制御のブロック図Shift control block diagram変速制御のフロー図Shift control flow chart変速制御のフロー図Shift control flow chart変速制御のフロー図Shift control flow chart変速制御のフロー図Shift control flow chart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 gearshift lever, the gearshift control mode, and the gearshift state of the hydraulic motor(イ)は、別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 an arrangement portion of auxiliary transmission means of another embodiment, (B) is an explanatory view showing the output of an 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.

1 走行装置
8 エンジン
10 主変速装置
13 油圧ポンプ
14油圧モータ(副変速装置)
26 副変速アクチュエータ
32 主変速レバー
33,34,35,42 副変速手段
36 主副変速モード選択手段
37 レバー位置検出手段
1 Traveling device 8Engine 10 Main transmission
13Hydraulic pump 14Hydraulic motor (sub transmission)
26Sub-transmission actuator 32 Main transmission levers 33, 34, 35, 42 Sub-transmission means 36 Main / sub transmission mode selection means 37 Lever position detection means

Claims (4)

Translated fromJapanese
エンジンから走行装置に動力伝達する伝動系に直列に設けた主変速装置と副変速装置を備えたコンバインの走行用変速操作装置であって、
前記主変速装置を変速操作する主変速レバーの操作位置を検出するレバー位置検出手段と、副変速指令を出力する副変速手段と、前記副変速装置を変速操作する副変速アクチュエータとを設け
前記主変速装置を前記主変速レバーの操作位置に対応する変速状態になるように操作し、かつ、前記レバー位置検出手段による検出情報に基づいて前記副変速装置が前記主変速レバーの操作位置に対応する変速状態に切り換えられるように前記副変速アクチュエータを操作する主副変速制御モードと、前記主変速装置を前記主変速レバーの操作位置に対応する変速状態になるように操作し、かつ、前記副変速手段からの副変速指令に基づいて前記副変速装置が前記副変速手段からの副変速指令に対応する変速状態に切り換えられて固定されるように前記レバー位置検出手段による検出情報に優先して前記副変速アクチュエータを操作する副変速制御モードとに切り換え自在な変速制御手段を設け、前記変速制御手段を前記主副変速制御モードと前記副変速制御モードとに切り換えるモード切り換え手段を設け
前記副変速手段が、移動走行用の高速副変速指令と、標準用の中速副変速指令と、倒伏の激しい穀稈を刈り取る倒伏用の低速副変速指令とを指令自在に構成され、前記副変速制御モードにおいて、前記副変速装置が、前記高速副変速指令に対応する所定の高速変速状態と、前記中速副変速指令に対応する所定の中速変速状態と、前記低速副変速指令に対応する所定の低速変速状態とに切り換えられるように構成されているコンバインの走行用変速操作装置。
A traveling speed change operation device for acombine that includes a main transmission device and a sub-transmission device provided in series with a transmission system that transmits power from the engine to the traveling device,
A lever position detecting means for detecting an operation position of a main transmission lever for shifting the main transmission, a sub transmission means for outputting a sub transmission command,and a sub transmission actuatorfor operating the sub transmission.
It said main transmission was operated so as to shift state corresponding to the operating position of the main speed change lever, and,on the basis of the information detected by the lever position detector auxiliary transmission device in the operating position ofthe main speed change lever A main auxiliary transmission control mode for operating the auxiliary transmission actuator tobe switched to a corresponding transmission state, operating the main transmissionto a transmission state corresponding to the operation position of the main transmission lever, andbased on the sub-shift command from the subtransmission means in preference to information detected bythe lever position detecting means so thatthe auxiliary speed change deviceis fixed is switched to the shift state corresponding to the sub transmission instruction fromthe subtransmission means Shift control means switchable to a sub shift control mode for operating the sub shift actuator is provided, and the shift control means is connected to the main sub shift control mode. Provided mode switching means for switching to said auxiliary shifting controlmode,
The sub-transmission means is configured to be capable of commanding a high-speed sub-transmission command for traveling, a medium-speed sub-transmission command for standard use, and a low-speed sub-transmission command for lodging to harvest harsh fallen rice straw. In the shift control mode, the sub-transmission device corresponds to a predetermined high speed shift state corresponding to the high speed sub shift command, a predetermined medium speed shift state corresponding to the medium speed sub shift command, and the low speed sub shift command. A traveling speed change operation device for acombine that is configured to be switched to a predetermined low speed shifting state .
前記モード切り換え手段を、主副変速モード選択手段と前記副変速手段とで構成し、前記主副変速モード選択手段によって主副変速モード指令を出力して前記変速制御手段を前記主副変速制御モードに切り換え操作し、前記副変速手段によって前記副変速指令と共に副変速モード指令を出力して前記変速制御手段を前記副変速制御モードに切り換え操作するように構成してある請求項1記載のコンバインの走行用変速操作装置。The mode switching means, the main the the auxiliary speed change mode selecting meansconstituted by the auxiliary transmissionsection, said main subtransmission modethe main the shift control means outputs the main and sub transmission mode command by the selecting means subtransmission control mode switching to operation,the subtransmission command with subtransmission mode command output by said shifting control meanssaid auxiliary transmission control mode changeover operation configuring and Aru claim 1, wherein as to thecombine by the subtransmission means A shifting operation device for traveling. 前記主変速装置静油圧式無段変速装置で構成して、前記静油圧式無段変速装置の油圧ポンプを操作することで前記主変速装置を変速操作するように構成し、
前記副変速装置を前記静油圧式無段変速装置油圧モータで構成し、前記油圧モータを、前記高速変速状態と、前記中速変速状態と、前記低速変速状態とに操作自在な可変容量形に構成してある請求項1又は2記載のコンバインの走行用変速操作装置。
Constitutethe main speed change device by the hydrostatic continuously variabletransmission, the main transmission device configured to shift operations by operating the hydraulic pump of the hydrostatic continuously variable transmission,
Said auxiliary transmission deviceis constituted by a hydraulic motorofthe hydrostatic continuously variabletransmission, said hydraulic motor, and the high-speed shifting state, and the medium speed shifting state, operably variable displacement to said low-speed shifting state Thecombine shift operating deviceaccording to claim 1 or 2,which is configured as described above.
前記副変速手段として複数の副変速スイッチを設けるとともに、各副変速スイッチは、前記副変速装置を対応する変速状態に変速するべき副変速指令を出力するように構成してある請求項1〜3のいずれか1項に記載のコンバインの走行用変速操作装置。4. A plurality of auxiliary transmission switches are provided as the auxiliary transmission means, and each auxiliary transmission switch is configured to output an auxiliary transmission command for shifting the auxiliary transmission to a corresponding transmission state. The shift operating device for a traveling of acombine according to any one of the above.
JP2004078628A2004-03-182004-03-18 Combined travel shift operating deviceExpired - Fee RelatedJP4393237B2 (en)

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JP2007230518A (en)*2006-03-032007-09-13Yanmar Co LtdOperation part for tractor
JP5108699B2 (en)*2008-09-242012-12-26株式会社クボタ Mowing harvester
JP5108681B2 (en)*2008-08-212012-12-26株式会社クボタ Combine
KR101065563B1 (en)2008-05-092011-09-19가부시끼 가이샤 구보다 Harvester
KR101696452B1 (en)2008-09-262017-01-13가부시끼 가이샤 구보다Reaping harvester
JP5215122B2 (en)*2008-10-272013-06-19株式会社クボタ Working gear shifting structure
JP2010159804A (en)*2009-01-072010-07-22Kubota CorpTravel control device for working vehicle
JP5215196B2 (en)*2009-01-082013-06-19株式会社クボタ Work vehicle travel control device
JP5285444B2 (en)*2009-01-142013-09-11株式会社クボタ Combine traveling control device

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