JP2005212517A - Travelling device for agricultural vehicle - Google Patents

Travelling device for agricultural vehicle Download PDF

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Publication number
JP2005212517A
JP2005212517A JP2004018628A JP2004018628A JP2005212517A JP 2005212517 A JP2005212517 A JP 2005212517A JP 2004018628 A JP2004018628 A JP 2004018628A JP 2004018628 A JP2004018628 A JP 2004018628A JP 2005212517 A JP2005212517 A JP 2005212517A
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traveling
wheels
rollers
traveling crawlers
right front
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Inventor
Nozomi Kataue
望 片上
Hideaki Nakagawa
秀明 中川
Satoshi Fuku
聡 富久
Yasumasa Kuroda
恭正 黒田
Masao Miyauchi
正男 宮内
Yoshio Sumita
善男 住田
Yoshinori Doi
義典 土居
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Priority to JP2004018628A priority Critical patent/JP2005212517A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To facilitate turning traveling in a soft paddy field, in regard to an agricultural vehicle to be used for riding operation and walking operation. <P>SOLUTION: Right and left travelling crawlers 30 and 30 are provided in a front side of a machine body frame 2, and right and left steering wheels 4 and 4 are provided in a rear side thereof, and a driving seat for riding 5 and a steering wheel 7 for riding are provided in the rear side of the machine body frame 2, and a steering wheel 9 for walking is provided in a front side end of the machine body 2. A right and a left front upper wheels 27 and 27 are supported by front side upper parts of the right and the left crawler frames 26 and 26, and right and left front lower wheels 28 and 28 are supported by a front side lower part thereof, and right and left rear wheels 29 and 29 are supported by a rear side lower part thereof, and the travelling crawlers 30 and 30 are wrapped around them. In the agricultural vehicle with this structure, a front part of each of the travelling crawlers 30 and 30 is formed with the predetermined attack angle α. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、乗用運転及び歩行運転で作業のできる農作業車の走行装置に関するものである。   The present invention relates to a traveling device for a farm vehicle capable of working in riding and walking.

機体前後に左・右駆動輪と左・右操舵輪を設け、これらの左・右駆動輪と左・右操舵輪との間に操縦席と乗用操縦ハンドルを設け、機体における左・右駆動輪側端部に別の歩行用ハンドルを設けた農作業車が特許文献1に示すように知られている。   Left / right drive wheels and left / right steering wheels are provided on the front and rear of the fuselage, and a pilot seat and a passenger steering wheel are provided between the left / right drive wheels and the left / right steering wheels. An agricultural work vehicle provided with another walking handle at a side end is known as shown in Patent Document 1.

特開2002−291305号公報JP 2002-291305 A

前記特許文献1に記載された発明は、機体旋回時には操縦ハンドルを回して左・右操舵輪を操舵するだけであり、後側の駆動輪の駆動力のみで機体を推進させるものである。   The invention described in Patent Document 1 merely turns the steering handle to steer the left and right steering wheels when turning the aircraft, and propels the aircraft only with the driving force of the rear drive wheels.

しかし、このような装置では軟弱な圃場で走行不能となる不具合が生じる。そこで、この発明は軟弱な圃場でも乗用運転と歩行運転を可能にしながら旋回の容易な農作業車を提供しようとするものである。   However, such a device has a problem that it cannot run in a soft field. Therefore, the present invention is intended to provide an agricultural vehicle that can be easily turned while allowing riding and walking even in a soft field.

前記問題点を解決するために、この発明は次のような技術的手段を講じた。   In order to solve the above problems, the present invention has taken the following technical means.

請求項1の発明は、機体フレーム2の前後何れかに左右一対の走行クローラ30,30を、前後何れか他方に左・右操舵輪4,4を設け、機体フレーム2の走行クローラ30,30と左・右操舵輪4,4との間には乗用操縦席5、乗用操縦ハンドル7及び作業機10を設け、機体2の前後方向における前記走行クローラ30,30の配置側端部に歩行用ハンドル9を設け、左・右走行伝動ケース24,24に支架した左・右駆動輪3,3の軸部に左・右クローラフレーム26、26を揺動自在に支持し、左・右クローラフレーム26,26の進行前側上部に左・右前上転輪27,27を、進行前側下部に左・右前下転輪28,28を、進行後側下部に左・右後転輪29,29を夫れ夫れ支架してこれら左・右転輪27,27、28,28、29,29及び左・右駆動輪3,3に走行クローラ30,30を巻き掛け、走行クローラ30,30の左・右前下転輪28,28から左・右後転輪29,29までの走行クローラ部及び前記左・右操舵輪4,4により機体を支持して通常走行をするように構成し、走行クローラ30,30の左・右前下転輪28,28から左・右後転輪29,29までの走行クローラ部に対して左・右前上転輪27,27から左・右前下転輪28,28までの走行クローラ30,30部に所定の向い角αを形成して、左・右前上転輪27,27から左・右前下転輪28,28までの走行クローラ30,30部を接地させると左・右操舵輪4,4を所定高さ持ち上げることを特徴とする農作業車の走行装置とする。   According to the first aspect of the present invention, a pair of left and right traveling crawlers 30, 30 are provided either on the front or rear of the body frame 2, and left and right steering wheels 4, 4 are provided on either the front or the rear. And the left and right steering wheels 4, 4 are provided with a passenger cockpit 5, a passenger steering handle 7, and a work machine 10, and are used for walking at the side ends of the traveling crawlers 30, 30 in the front-rear direction of the body 2. The left and right crawler frames 26 and 26 are swingably supported on the shaft portions of the left and right drive wheels 3 and 3 supported on the left and right traveling transmission cases 24 and 24 by providing the handle 9, and the left and right crawler frames are supported. 26, 26 have left / right front upper rollers 27, 27 on the front upper side, left / right front lower wheels 28, 28 on the lower front side, and left / right rear wheels 29, 29 on the lower rear side. These left and right wheels 27, 27, 28, 28, 2 , 29 and the left and right drive wheels 3, 3 are wrapped around the traveling crawlers 30, 30, and the traveling crawlers 30, 30 are moved from the left / right front lower rollers 28, 28 to the left / right rear rollers 29, 29. And the left and right steered wheels 4 and 4 support the vehicle body so that the vehicle travels normally. From the left and right front lower rollers 28 and 28 of the traveling crawlers 30 and 30 to the left and right rear wheels 29, A predetermined angle α is formed on the traveling crawlers 30 and 30 from the left and right front upper rollers 27 and 27 to the left and right front lower rollers 28 and 28 with respect to the traveling crawler portion up to 29, and the left and right front Agricultural vehicle traveling characterized in that the left and right steering wheels 4 and 4 are lifted to a predetermined height when the traveling crawlers 30 and 30 from the upper rollers 27 and 27 to the left and right front lower rollers 28 and 28 are brought into contact with the ground. A device.

前記構成によると、農作業車の通常走行状態では、走行クローラ30,30の左・右前下転輪28,28から左・右後転輪29,29までの走行クローラ部及び左・右操舵輪4,4により機体が支持され、乗用操縦ハンドル7や歩行用ハンドル9を操作しながら走行し作業をする。また、歩行用ハンドル9を操作している時の旋回走行の際には、歩行用ハンドル9を押し下げて左・右前上転輪27,27から左・右前下転輪28,28までの走行クローラ30,30部を接地させると、左・右操舵輪4,4が所定高さに持ち上げられ、左・右サイドクラッチ、左・右サイドブレーキを操作することにより軟弱な圃場でも円滑に旋回することができる。   According to the above-described configuration, in the normal traveling state of the farm vehicle, the traveling crawler portion from the left / right front lower rollers 28, 28 to the left / right rear rollers 29, 29 of the traveling crawlers 30, 30 and the left / right steering wheels 4 are provided. , 4, and the aircraft is supported and travels and operates while operating the riding steering handle 7 and the walking handle 9. Further, when turning while the walking handle 9 is being operated, the traveling crawler from the left / right front upper rollers 27, 27 to the left / right front lower rollers 28, 28 by pushing down the walking handle 9. When the 30 and 30 parts are grounded, the left and right steering wheels 4 and 4 are lifted to a predetermined height, and the left and right side clutches and the left and right side brakes are operated to smoothly turn even in a soft field. Can do.

請求項2の発明は、走行クローラ30,30の左・右前上転輪27,27から左・右前下転輪28,28までの長さW1が左・右前下転輪28,28から左・右後転輪29,29までの長さW2よりも長くなるように各左・右転輪27,27、28,28、29,29を配置したことを特徴とする請求項1記載の農作業車の走行装置とする。   According to the second aspect of the present invention, the length W1 from the left / right front upper rollers 27, 27 to the left / right front lower rollers 28, 28 of the traveling crawlers 30, 30 is such that the left / right front lower rollers 28, 28 2. The agricultural work vehicle according to claim 1, wherein each of the left and right wheels 27, 27, 28, 28, 29, 29 is arranged to be longer than a length W2 up to the right rear wheels 29, 29. The traveling device.

前記構成によると、農作業車の通常走行状態では、走行クローラ30,30の左・右前下転輪28,28から左・右後転輪29,29までの走行クローラ部及び左・右操舵輪4,4により機体が支持され、乗用操縦ハンドル7や歩行用ハンドル9を操作しながら走行し作業をする。また、歩行用ハンドル9を操作している時の旋回走行の際には、歩行用ハンドル9を押し下げて、左・右前下転輪28,28から左・右後転輪29,29までよりも長い左・右前上転輪27,27から左・右前下転輪28,28までの走行クローラ30,30部を接地させると、左・右操舵輪4,4が所定高さに持ち上げられ、左・右サイドクラッチ、左・右サイドブレーキを操作することにより軟弱な圃場でも円滑に旋回することができる。   According to the above-described configuration, in the normal traveling state of the farm vehicle, the traveling crawler portion from the left / right front lower rollers 28, 28 to the left / right rear rollers 29, 29 of the traveling crawlers 30, 30 and the left / right steering wheels 4 are provided. , 4, and the aircraft is supported and travels and operates while operating the riding steering handle 7 and the walking handle 9. Further, when turning while the walking handle 9 is being operated, the walking handle 9 is pushed down so that it is lower than the left / right front lower rollers 28, 28 to the left / right rear wheels 29, 29. When the traveling crawlers 30, 30 from the long left / right front upper wheels 27, 27 to the left / right front lower rollers 28, 28 are grounded, the left / right steering wheels 4, 4 are lifted to a predetermined height and left -By turning the right side clutch and left / right side brakes, it can turn smoothly even in a soft field.

請求項1の発明は、歩行用ハンドル9を押し下げて走行クローラ30,30における左・右前上転輪27,27から左・右前下転輪28,28までの走行クローラ部分を接地させると左・右操舵輪4,4が所定高さに持ち上げられ、軟弱な圃場での旋回走行を楽に安定的に行なうことができる。   According to the first aspect of the present invention, when the walking handle 9 is pushed down and the traveling crawler portions from the left / right front upper rollers 27, 27 to the left / right front lower rollers 28, 28 in the traveling crawlers 30, 30 are grounded, The right steered wheels 4 and 4 are lifted to a predetermined height, and the cornering can be performed easily and stably in a soft field.

請求項2の発明は、歩行用ハンドル9を押し下げて左・右前上転輪27,27から左・右前下転輪28,28までの長い走行クローラ30,30部を接地させることにより左・右操舵輪4,4が所定高さに安定して持ち上げられ、軟弱な圃場での旋回走行を楽に安定的に行なうことができる。   According to the second aspect of the present invention, the left and right traveling crawlers 30 and 30 from the left and right front upper rollers 27 and 27 to the left and right front lower rollers 28 and 28 are grounded by depressing the walking handle 9 to the left and right. The steered wheels 4 and 4 are stably lifted to a predetermined height, and the turning traveling in the soft field can be performed easily and stably.

この発明は、機体フレーム2の前後何れかに左右一対の走行クローラ30,30を、前後何れか他方に左・右操舵輪4,4を設け、機体フレーム2の走行クローラ30,30と左・右操舵輪4,4との間には乗用操縦席5、乗用操縦ハンドル7及び作業機10を設け、機体2の走行クローラ30,30側端部に歩行用ハンドル9を設けた農作業車において、左・右クローラフレーム26,26の前側上部の左・右前上転輪27,27、前側下部の左・右前下転輪28,28、後側下部の左・右後転輪29,29及び左・右駆動輪3,3に走行クローラ30,30を巻き掛け、走行クローラ30,30の左・右前下転輪28,28から左・右後転輪29,29までの走行クローラ部に対して左・右前上転輪27,27から左・右前下転輪28,28までの走行クローラ30,30部に所定の向い角αを形成して、左・右前上転輪27,27から左・右前下転輪28,28までの走行クローラ30,30部を接地させると左・右操舵輪4,4を所定高さ持ち上げることを特徴とする。   In the present invention, a pair of left and right traveling crawlers 30, 30 are provided either on the front or rear of the body frame 2, and left and right steering wheels 4, 4 are provided on either the front or the rear. In the agricultural work vehicle in which the riding cockpit 5, the riding steering handle 7 and the work machine 10 are provided between the right steering wheels 4 and 4, and the walking handle 9 is provided at the end of the airframe 2 on the traveling crawlers 30 and 30 side, Left / right front upper rollers 27, 27 at the upper front of the left / right crawler frames 26, 26, left / right front lower rollers 28, 28 at the lower front, left / right rear rollers 29, 29 at the lower rear, and left The traveling crawlers 30 and 30 are wound around the right drive wheels 3 and 3, and the traveling crawler portions of the traveling crawlers 30 and 30 from the left and right front lower rollers 28 and 28 to the left and right rear rollers 29 and 29 are From left / right front upper rollers 27, 27 to left / right front lower rollers 28, A predetermined angle α is formed in the traveling crawlers 30 and 30 up to 8, and the traveling crawlers 30 and 30 from the left / right front upper rollers 27, 27 to the left / right front lower rollers 28, 28 are grounded. And the left and right steering wheels 4 and 4 are lifted by a predetermined height.

以下本発明の農作業車の一実施形態について説明する。   An embodiment of an agricultural work vehicle according to the present invention will be described below.

図1及び図2に基づきこの発明を具備する乗用及び歩行兼用型の農作業車1の実施例について説明する。   An embodiment of a riding and walking combined farm vehicle 1 having the present invention will be described with reference to FIGS. 1 and 2.

この農作業車1は、機体フレーム2の前後に左右一対の走行クローラ(前走行装置)30,30と左・右操舵輪(後輪)4,4を設けている。前側の走行クローラ30,30から後側の左・右操舵輪4,4までの機体フレーム2において、左・右操舵輪4,4の上方には乗用操縦席5を、乗用操縦席5の前側には例えば丸ハンドル型の乗用操縦ハンドル7を設けている。また、機体フレーム2の前側の走行クローラ30,30の上方にエンジン8を搭載し、エンジン8の前側部位で機体フレーム2の前側部に例えばループ状の歩行用ハンドル9を前方に突出するように設けている。   The farm vehicle 1 is provided with a pair of left and right traveling crawlers (front traveling devices) 30 and 30 and left and right steering wheels (rear wheels) 4 and 4 on the front and rear of the machine body frame 2. In the fuselage frame 2 from the front traveling crawlers 30, 30 to the rear left / right steering wheels 4, 4, the passenger cockpit 5 is located above the left / right steering wheels 4, 4, and the front side of the passenger cockpit 5. For example, a round handle type riding steering handle 7 is provided. Further, the engine 8 is mounted above the traveling crawlers 30, 30 on the front side of the body frame 2, and a loop-like walking handle 9 protrudes forward on the front side portion of the body frame 2 at the front portion of the engine 8. Provided.

走行クローラ30,30と左・右操舵輪4,4間の機体フレーム2下方には、昇降調節可能な左・右中耕ロータリ10,10及び左・右畝成形器11,11のような作業機が装着されている。   Below the fuselage frame 2 between the traveling crawlers 30 and 30 and the left and right steering wheels 4 and 4, work machines such as left and right middle rotary rotary 10 and 10 and left and starboard molding machines 11 and 11 that can be adjusted up and down. Is installed.

次に、図3に基づき動力の伝動構成について説明する。   Next, the power transmission configuration will be described with reference to FIG.

エンジン8からベルト伝動装置13を介して主軸14に動力を伝達し、主軸14からギヤ伝動装置15を介してPTO軸16に動力を伝達し、更に、PTO軸16から走行変速部の主変速装置17、副変速装置18を経て走行変速軸19に動力を伝達し、更に、走行変速軸19からチエン20を介して走行伝動軸21に動力を伝達している。走行伝動軸21には左・右サイドクラッチ22L,22R及び左・右サイドブレーキ23L,23Rを設け、走行伝動軸21から左・右走行伝動ケース24,24内のチエン25,25を介して左・右駆動輪3,3に動力を伝達し、走行クローラ30,30を駆動するように構成している。   Power is transmitted from the engine 8 to the main shaft 14 via the belt transmission 13, power is transmitted from the main shaft 14 to the PTO shaft 16 via the gear transmission 15, and the main transmission of the traveling transmission unit is further transmitted from the PTO shaft 16. 17, power is transmitted to the travel transmission shaft 19 via the auxiliary transmission 18, and further, power is transmitted from the travel transmission shaft 19 to the travel transmission shaft 21 via the chain 20. The travel transmission shaft 21 is provided with left and right side clutches 22L and 22R and left and right side brakes 23L and 23R, and left and right from the travel transmission shaft 21 through the chains 25 and 25 in the left and right travel transmission cases 24 and 24. The power is transmitted to the right drive wheels 3 and 3 to drive the traveling crawlers 30 and 30.

左・右走行伝動ケース24,24の左・右駆動輪3,3軸部には、左・右クローラフレーム26、26を揺動自在に支持し、左・右クローラフレーム26,26の前側上部には左・右前上転輪27,27を、前側下部には左・右前下転輪28,28を、後側下部には左・右後転輪29,29を夫れ夫れ軸架し、これらの左・右前上転輪27,27、左・右前下転輪28,28、左・右後転輪29,29及び左・右駆動輪3,3に走行クローラ30,30を巻き掛けている。   Left and right crawler frames 26 and 26 are swingably supported on the left and right drive wheels 3 and 3 shaft portions of the left and right traveling transmission cases 24 and 24, and the front upper portions of the left and right crawler frames 26 and 26 are supported. The left and right front and upper rollers 27, 27, the front lower portion, the left and right front lower rollers 28, 28, and the rear lower portion, the left and right rear rollers 29, 29, are respectively pivoted. The left and right front upper rollers 27 and 27, the left and right front lower rollers 28 and 28, the left and right rear rollers 29 and 29, and the left and right drive wheels 3 and 3 are wound around the traveling crawlers 30 and 30, respectively. ing.

また、機体の通常走行時には、走行クローラ30,30の左・右前下転輪28,28から左・右後転輪29,29までの接地走行クローラ部、及び、左・右操舵輪4,4により機体が支えられて走行する。そして、通常走行時には左・右前下転輪28,28から左・右後転輪29,29までの接地走行クローラ部に対して、左・右前上転輪27,27から左・右前下転輪28,28までの走行クローラ30,30部は所定鋭角の上り傾斜の向い角αが形成されていて、この左・右前上転輪27,27から左・右前下転輪28,28までの走行クローラ30,30部が接地すると、機体後部の左・右操舵輪4,4が所定高さに持ち上げられるように構成している。   Further, during normal traveling of the aircraft, the ground traveling crawler section from the left / right front lower rollers 28, 28 to the left / right rear rollers 29, 29 of the traveling crawlers 30, 30 and the left / right steering wheels 4, 4 The aircraft is supported by the vehicle. During normal traveling, the left / right front upper rollers 27, 27 to the left / right front lower rollers with respect to the ground traveling crawler portion from the left / right front lower rollers 28, 28 to the left / right rear rollers 29, 29. The traveling crawlers 30 and 30 up to 28 and 28 are formed with a predetermined acute angle of upward inclination α and traveling from the left and right front upper rollers 27 and 27 to the left and right front lower rollers 28 and 28. When the crawlers 30 and 30 are grounded, the left and right steering wheels 4 and 4 at the rear of the fuselage are configured to be raised to a predetermined height.

そして、走行クローラ30,30の左・右前上転輪27,27から左・右前下転輪28,28までの長さをW1とし、左・右前下転輪28,28から左・右後転輪29,29までの長さをW2とすると、これらの長さ関係はW1≧W2となるように各転輪27,27、28,28、29,29及び左・右駆動輪3,3を配置しこれらに走行クローラ30,30を巻きかけている。   The length from the left / right front upper rollers 27, 27 to the left / right front lower rollers 28, 28 of the traveling crawlers 30, 30 is W1, and the left / right front lower rollers 28, 28 are left / right backwards. When the length to the wheels 29, 29 is W2, the rollers 27, 27, 28, 28, 29, 29 and the left and right drive wheels 3, 3 are arranged so that the length relationship is W1 ≧ W2. The crawlers 30 and 30 are wound around these.

しかして、図1の仮想線で示すように、前側の歩行用ハンドル9を押し下げて、走行クローラ30,30における左・右前上転輪27,27から左・右前下転輪28,28までの比較的長い走行クローラ部分を接地させると、機体後部の左・右操舵輪4,4が所定高さ上昇状態となり、軟弱な圃場での旋回走行を楽に安定的にすることができる。   Thus, as shown by the phantom lines in FIG. 1, the front walking handle 9 is pushed down to move from the left / right front upper rollers 27, 27 to the left / right front lower rollers 28, 28 in the traveling crawlers 30, 30. When the relatively long traveling crawler portion is brought into contact with the ground, the left and right steering wheels 4 and 4 at the rear of the machine body are raised to a predetermined height, and the turning traveling in the soft field can be easily stabilized.

次に、図4乃至図6に基づき左・右操舵輪4,4の操舵構成について説明する。   Next, the steering configuration of the left and right steering wheels 4 and 4 will be described with reference to FIGS.

機体フレーム2後部には車輪保持筒31を介して左・右操舵輪4,4を設け、機体フレーム2の後部上面に乗用操縦席5保持用のシート保持板32を取り付け、シート保持板32の左右中央部に上下に突出するように支点筒33を取り付けている。支点筒33に嵌合軸支されている支点軸34の上下両端部に下ピットマンアーム35a及び上ピットマンアーム35bを固着している。前記乗用操縦ハンドル7に連結されている左・右操舵ワイヤ36,36の後端部を下ピットマンアーム35aの左右両端に連結し、また、左・右操舵輪4,4操舵用の左・右タイロッド37,37の内側端部を平面視で相互に重合させて、左タイロッド37の内側端部を上ピットマンアーム35bの後部右側端部下面にボルト・ナットで連結し、右タイロッド37の内側端部を上ピットマンアーム35bの後部左側端部にボルト・ナットで連結し、左・右タイロッド37,37を左・右操舵輪4,4のトレッドに合わせて伸縮調節できるように構成している。   Left and right steering wheels 4 and 4 are provided at the rear of the body frame 2 via a wheel holding cylinder 31, and a seat holding plate 32 for holding the passenger cockpit 5 is attached to the rear upper surface of the body frame 2. A fulcrum tube 33 is attached to the left and right central portions so as to protrude vertically. A lower pitman arm 35a and an upper pitman arm 35b are fixed to both upper and lower ends of a fulcrum shaft 34 supported by the fulcrum cylinder 33. The left and right steering wires 36, 36 connected to the riding steering handle 7 are connected to the left and right ends of the lower pitman arm 35a, and the left and right steering wheels 4, 4 are used for steering left and right. The inner end portions of the tie rods 37 and 37 are overlapped with each other in a plan view, and the inner end portion of the left tie rod 37 is connected to the bottom surface of the rear right end portion of the upper pitman arm 35b with a bolt and a nut. The left and right tie rods 37 and 37 are connected to the left and right ends of the rear part of the upper pitman arm 35b so that the left and right tie rods 37 and 37 can be expanded and contracted in accordance with the treads of the left and right steering wheels 4 and 4.

しかして、乗用操縦ハンドル7を回動操作すると、左・右操舵ワイヤ36,36が前後に連動されて上・下ピットマンアーム35a,35bが支点軸34回りに回動し、左・右タイロッド37,37を介して左・右操舵輪4,4が操舵される。そして、上ピットマンアーム37bに左・右タイロッド37,37の内側端部を平面視で重合状態で連結しているので、旋回時に内側の操舵輪4より外側の操舵輪4の切れ角が大になり、外側の操舵輪4が引き摺られるようなこともなく円滑に旋回することができる。   When the passenger steering handle 7 is turned, the left / right steering wires 36, 36 are interlocked back and forth, and the upper / lower pitman arms 35a, 35b are turned around the fulcrum shaft 34, and the left / right tie rods 37 are rotated. , 37, the left and right steering wheels 4, 4 are steered. Since the inner ends of the left and right tie rods 37, 37 are connected to the upper pitman arm 37b in a superposed state in plan view, the turning angle of the steered wheels 4 outside the steered wheels 4 is larger when turning. Thus, the outer steering wheel 4 can be smoothly turned without being dragged.

また、前記のように、機体フレーム2の後部上面に配置したシート保持板32に支点筒33を取り付け、この支点筒33を介して上・下ピットマンアーム35a,35bの支点軸34を保持するように構成したので、シート保持板32を薄くしても強度アップが図られ変形が防止できて、左・右操舵輪4,4を円滑に操舵することができる。   Further, as described above, the fulcrum cylinder 33 is attached to the sheet holding plate 32 disposed on the upper surface of the rear portion of the machine body frame 2, and the fulcrum shafts 34 of the upper and lower pitman arms 35 a and 35 b are held via the fulcrum cylinder 33. Thus, even if the sheet holding plate 32 is thinned, the strength is increased and deformation can be prevented, and the left and right steering wheels 4 and 4 can be smoothly steered.

なお、図4に示すように、ピットマンアーム37を一枚状の板体で構成し、ピットマンアーム37の前側部上下一側に左・右操舵ワイヤ36,36の後端部を連結し、後側部の上下他側に左・右タイロッド37,37の内側端部を平面視で相互に重合させて連結してもよい。   As shown in FIG. 4, the pitman arm 37 is constituted by a single plate, and the rear end portions of the left and right steering wires 36, 36 are connected to the upper and lower sides of the front side portion of the pitman arm 37, The inner ends of the left and right tie rods 37, 37 may be overlapped with each other in a plan view and connected to the other side of the side.

また、図7に示すように機体フレーム2の乗用操縦ハンドル7の下方部位に左右独立の左・右サイドクラッチぺダル38L,38Rを踏込み操作可能に軸支している。ミッションケース41内の左・右サイドクラッチ22L,22R作動用の左・右サイドクラッチアーム39L,39Rと左・右サイドクラッチぺダル38L,38Rとの間を左・右サイドクラッチロッド40L,40Rを介して連結し、ミッションケース41内の左・右サイドブレーキ23L,23R作動用の左・右ブレーキアーム50L,50Rを設け、前記左・右クラッチアーム39,39と左・右ブレーキアーム50L,50Rとを左・右ブレーキワイヤ51L,51Rを介して連動連結している。   Further, as shown in FIG. 7, left and right independent left and right side clutch pedals 38L and 38R are pivotally supported in a lower part of the riding steering handle 7 of the body frame 2 so as to be stepped on. The left and right side clutch rods 40L and 40R are connected between the left and right side clutch arms 39L and 39R for operating the left and right side clutches 22L and 22R in the transmission case 41 and the left and right side clutch pedals 38L and 38R. The left and right brake arms 50L and 50R for operating the left and right side brakes 23L and 23R in the mission case 41 are provided, and the left and right clutch arms 39 and 39 and the left and right brake arms 50L and 50R are provided. Are linked to each other via left and right brake wires 51L and 51R.

歩行用ハンドル9の近くには左・右サイドクラッチ22L,22Rを入/切する左・右サイドクラッチレバー45,45、及び、主クラッチ(テンションクラッチプーリ48)を入/切する主クラッチレバー46が操作可能に軸支されている。なお、左・右サイドクラッチレバー45,45はサイドクラッチワイヤ47,47を介して左・右サイドクラッチ22L,22Rに連動連結されている。また、主クラッチレバー46は主クラッチワイヤ(図示省略)を介してテンションクラッチアーム49に連動連結されている。   Near the walking handle 9 are left / right side clutch levers 45, 45 for turning on / off the left / right side clutches 22L, 22R, and a main clutch lever 46 for turning on / off the main clutch (tension clutch pulley 48). Is pivotally supported. The left / right side clutch levers 45, 45 are interlocked and connected to the left / right side clutches 22L, 22R via side clutch wires 47, 47. The main clutch lever 46 is interlocked and connected to a tension clutch arm 49 via a main clutch wire (not shown).

次に、図8及び図9に基づき左・右中耕ロータリ10,10及び畝成形器11,11の取付構成の他の実施例について説明する。   Next, another embodiment of the mounting configuration of the left / right middle tilling rotary 10, 10 and the ridge former 11, 11 will be described with reference to FIGS.

機体フレーム2の後部に中間伝動ケース52,52及び補助リンク53,53を介して畝成形器11付きの左・右中耕ロータリ10,10を昇降自在に取り付け、機体フレーム2の前側部には例えば電動式の左・右伸縮シリンダ54,54の前端部をピン連結し、左・右伸縮シリンダ54,54の後端部に圧縮スプリング55の内装されている連結パイプ56,56の前端部を接続ピン57,57で連結し、連結パイプ56,56の後端部に設けた接続ピン58,58を左・右中耕ロータリ10,10側の接続プレート59,59の長孔59a,59aに係合している。なお、60L,60Rは左・右伸縮シリンダ54,54を伸縮作動する左・右耕深調整モータである。   The left and right middle tillers 10 and 10 with the hook forming device 11 are attached to the rear part of the machine body frame 2 via intermediate transmission cases 52 and 52 and auxiliary links 53 and 53 so as to be movable up and down. The front end portions of the electric left and right telescopic cylinders 54 and 54 are pin-connected, and the front end portions of the connecting pipes 56 and 56 in which the compression springs 55 are internally connected are connected to the rear end portions of the left and right telescopic cylinders 54 and 54. Connected by pins 57, 57, and connecting pins 58, 58 provided at the rear ends of the connecting pipes 56, 56 engage with the long holes 59a, 59a of the connection plates 59, 59 on the left and right middle rotary rotary 10, 10 side. doing. Reference numerals 60L and 60R denote left and right working depth adjusting motors that extend and retract the left and right telescopic cylinders 54 and 54, respectively.

しかして、機体フレーム2と左・右中耕ロータリ10,10とを圧縮スプリング55の内装されている連結パイプ56,56を介して昇降自在に構成したので、左・右中耕ロータリ10,10からの衝撃が吸収されて機体の耐久性を高めることができる。   The airframe frame 2 and the left and right middle tillers 10 and 10 are configured so as to be movable up and down via the connecting pipes 56 and 56 in which the compression spring 55 is housed. The impact is absorbed and the durability of the aircraft can be improved.

次に、図10に基づき左・右中耕ロータリ10,10の耕深調整スイッチについて説明する。前記のように左・右中耕ロータリ10,10を左・右伸縮シリンダ54,54を介して別々に昇降調節可能に構成し、左・右耕深調節スイッチ61L,61Rを設けリレーを介して左・右耕深調整モータ60L,60Rを作動し左・右中耕ロータリ10,10を別々に昇降可能に構成している。また、別の最上昇耕深スイッチ62を設け、最上昇耕深スイッチ62を上げ操作すると、左・右上昇保持リレー63L,63Rが励磁されて左・右耕深調整モータ60L,60Rを作動し、左・右中耕ロータリ10,10を最上昇位置まで自動的に上昇させることができ、最上昇位置に到達すると左・右上限リミットスイッチ62L,62RがOFFし停止する。なお、図10はその電気回路図を示すものである。このように構成することにより、圃場条件に応じた左・右中耕ロータリ10,10の別々の高低調節や枕地等での左右同調調節を迅速に行なうことができる。   Next, the tilling depth adjustment switch of the left / right middle tilling rotary 10, 10 will be described with reference to FIG. As described above, the left and right middle tilling rotary 10 and 10 can be adjusted up and down separately via the left and right telescopic cylinders 54 and 54, and left and right tilling depth adjusting switches 61L and 61R are provided and left via a relay. The right plowing depth adjusting motors 60L and 60R are operated so that the left and right middle plowing rotary 10 and 10 can be moved up and down separately. In addition, when another maximum ascent depth switch 62 is provided and the maximum ascent depth switch 62 is raised, the left and right ascent holding relays 63L and 63R are excited to operate the left and right tillage adjusting motors 60L and 60R. The left and right middle rotary rotary 10, 10 can be automatically raised to the highest position, and when reaching the highest position, the left / right upper limit switches 62L, 62R are turned OFF and stopped. FIG. 10 shows an electric circuit diagram thereof. By comprising in this way, the separate height adjustment of the left and right middle tilling rotary 10 and 10 according to field conditions, and the left-right synchronous adjustment in a headland etc. can be performed rapidly.

また、最下降耕深スイッチを設け、このスイッチを操作すると左・右中耕ロータリ10,10が同時に下降し、左・右中耕ロータリ10,10の接地体(図示省略)が地面に接触するまで自動的に下降するように構成してもよい。   In addition, the lowest plowing depth switch is provided, and when this switch is operated, the left and right middle tilling rotary 10, 10 is lowered at the same time, and the grounding body (not shown) of the left and right middle tilling rotary 10, 10 is automatically touched to the ground. You may comprise so that it may descend | fall.

また、図11に示すように左・右中耕ロータリ10,10の耕深調整スイッチを構成してもよい。左・右伸縮シリンダ54,54を別々に昇降調節できる左・右耕深調節スイッチ61L,61Rを設け、左・右伸縮シリンダ54,54を同時に昇降調節できる同時耕深昇降調節スイッチ64を別に設ける構成としてもよい。なお、図11はその電気回路図を示すものである。   Moreover, as shown in FIG. 11, you may comprise the tilling depth adjustment switch of the left and right middle tilling rotary 10,10. Left and right tillage adjustment switches 61L and 61R that can adjust the left and right telescopic cylinders 54 and 54 separately are provided, and a simultaneous tilling depth raising and lowering adjustment switch 64 that can adjust the left and right telescopic cylinders 54 and 54 at the same time is provided separately. It is good also as a structure. FIG. 11 shows an electric circuit diagram thereof.

次に、図12に基づき左・右中耕ロータリ10,10の昇降スイッチ及び耕深調整表示用モニタについて説明する。丸型の乗用操縦ハンドル7内に表示器65及び左・右耕深調節スイッチ61L,61Rを設け、左・右中耕ロータリ10,10用昇降用左・右伸縮シリンダ54,54の耕深調節状態を表示器65L,65Rの左・右耕深表示部65L,65Rに表示するものである。   Next, the lift switch and the tilling depth adjustment display monitor of the left and right middle tilling rotary 10, 10 will be described with reference to FIG. The indicator 65 and the left / right tillage adjustment switches 61L, 61R are provided in the round riding control handle 7, and the tilling depth adjustment state of the left / right telescopic cylinders 54, 54 for raising / lowering the left / right middle tillage rotary 10, 10 is provided. Is displayed on the left and right plowing depth display portions 65L and 65R of the indicators 65L and 65R.

このように構成することにより、操縦しながら左・右耕深調節スイッチ61L,61Rを操作でき、表示器65の左・右耕深表示部65L,65Rにより左・右中耕ロータリ10,10の耕深調節状態をモニタすることができ、作業性を向上させることができる。   With this configuration, it is possible to operate the left / right tillage depth adjusting switches 61L, 61R while maneuvering, and the left / right middle tillage rotary units 10, 10 are plowed by the left / right tillage depth display portions 65L, 65R of the indicator 65. The depth adjustment state can be monitored, and workability can be improved.

全体の側面図Overall side view 一部省略した全体の平面図Whole plan with some omitted 動力伝達経路図Power transmission path diagram 要部の側面図Side view of the main part 要部の側面図Side view of the main part 要部の平面図Top view of main parts 要部の平面図Top view of main parts 全体の側面図Overall side view 要部の側面図Side view of the main part 電気回路図Electrical diagram 電気回路図Electrical diagram 要部の正面図Front view of main parts

符号の説明Explanation of symbols

1 農作業車
2 機体フレーム
3 左・右駆動輪
4 左・右操舵輪
5 乗用操縦席
7 乗用操縦ハンドル
9 歩行用ハンドル
10 中耕ロータリ(作業機)
24 左・右走行伝動ケース
26 左・右クローラフレーム
27 左・右前上転輪
28 左・右前下転輪
29 左・右後転輪
30 走行クローラ
DESCRIPTION OF SYMBOLS 1 Agricultural work vehicle 2 Airframe frame 3 Left / right driving wheel 4 Left / right steering wheel 5 Passenger cockpit 7 Riding steering handle 9 Walking handle 10 Nakakoro rotary (work machine)
24 Left / Right Traveling Case 26 Left / Right Crawler Frame 27 Left / Right Front Upper Roller 28 Left / Right Front Lower Roller 29 Left / Right Rear Roller 30 Traveling Crawler

Claims (2)

機体フレーム2の前後何れかに左右一対の走行クローラ30,30を、前後何れか他方に左・右操舵輪4,4を設け、機体フレーム2の走行クローラ30,30と左・右操舵輪4,4との間には乗用操縦席5、乗用操縦ハンドル7及び作業機10を設け、機体2の前後方向における前記走行クローラ30,30の配置側端部に歩行用ハンドル9を設け、左・右走行伝動ケース24,24に支架した左・右駆動輪3,3の軸部に左・右クローラフレーム26、26を揺動自在に支持し、左・右クローラフレーム26,26の進行前側上部に左・右前上転輪27,27を、進行前側下部に左・右前下転輪28,28を、進行後側下部に左・右後転輪29,29を夫れ夫れ支架してこれら左・右転輪27,27、28,28、29,29及び左・右駆動輪3,3に走行クローラ30,30を巻き掛け、走行クローラ30,30の左・右前下転輪28,28から左・右後転輪29,29までの走行クローラ部及び前記左・右操舵輪4,4により機体を支持して通常走行をするように構成し、走行クローラ30,30の左・右前下転輪28,28から左・右後転輪29,29までの走行クローラ部に対して左・右前上転輪27,27から左・右前下転輪28,28までの走行クローラ30,30部に所定の向い角αを形成して、左・右前上転輪27,27から左・右前下転輪28,28までの走行クローラ30,30部を接地させると左・右操舵輪4,4を所定高さ持ち上げることを特徴とする農作業車の走行装置。   A pair of left and right traveling crawlers 30, 30 are provided either on the front or the rear of the body frame 2, and left / right steering wheels 4, 4 are provided on either the front or the rear, and the traveling crawlers 30, 30 on the body frame 2 and the left / right steering wheels 4 are provided. 4, a passenger cockpit 5, a passenger steering handle 7, and a work machine 10 are provided, and a walking handle 9 is provided at an end portion of the traveling crawlers 30, 30 in the front-rear direction of the vehicle body 2. The left and right crawler frames 26 and 26 are swingably supported on the shaft portions of the left and right drive wheels 3 and 3 that are supported on the right traveling transmission cases 24 and 24, and the left and right crawler frames 26 and 26 are on the upper side of the traveling front side. Left and right front upper rollers 27, 27, left / right front lower rollers 28, 28 at the lower part of the front side, and left / right rear wheels 29, 29 at the lower part of the rear side. Left / right wheels 27, 27, 28, 28, 29, 29 and left / right The traveling crawlers 30 are wound around the driving wheels 3, 3, and the traveling crawler portions from the left / right front lower rollers 28, 28 to the left / right rear rollers 29, 29 of the traveling crawlers 30, 30 and the left / right steering are described. The vehicle is supported by the wheels 4 and 4 so as to perform normal traveling, and the traveling crawlers 30 and 30 have left and right front lower rollers 28 and 28 to left and right rear rollers 29 and 29. On the other hand, a predetermined angle α is formed in the traveling crawlers 30, 30 from the left / right front upper rollers 27, 27 to the left / right front lower rollers 28, 28 so that the left / right front upper rollers 27, 27 A traveling device for agricultural vehicles, characterized in that when the traveling crawlers 30, 30 to the left / right front lower rollers 28, 28 are grounded, the left / right steering wheels 4, 4 are lifted by a predetermined height. 走行クローラ30,30の左・右前上転輪27,27から左・右前下転輪28,28までの長さW1が左・右前下転輪28,28から左・右後転輪29,29までの長さW2よりも長くなるように各左・右転輪27,27、28,28、29,29を配置したことを特徴とする請求項1記載の農作業車の走行装置。   The length W1 from the left / right front upper rollers 27, 27 to the left / right front lower rollers 28, 28 of the traveling crawlers 30, 30 is determined from the left / right front lower rollers 28, 28 to the left / right rear rollers 29, 29. 2. The agricultural vehicle traveling apparatus according to claim 1, wherein each of the left and right wheels 27, 27, 28, 28, 29, 29 is disposed so as to be longer than the length W2.
JP2004018628A 2004-01-27 2004-01-27 Travelling device for agricultural vehicle Pending JP2005212517A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017212921A (en) * 2016-05-31 2017-12-07 井関農機株式会社 Root crop harvester
JP2019172196A (en) * 2018-03-29 2019-10-10 ヤンマー株式会社 Off-road travel vehicle
CN117961384A (en) * 2024-03-29 2024-05-03 中国核工业二四建设有限公司 Crawler-type nuclear power station containment wall climbing welding robot with hollow structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017212921A (en) * 2016-05-31 2017-12-07 井関農機株式会社 Root crop harvester
JP2019172196A (en) * 2018-03-29 2019-10-10 ヤンマー株式会社 Off-road travel vehicle
CN117961384A (en) * 2024-03-29 2024-05-03 中国核工业二四建设有限公司 Crawler-type nuclear power station containment wall climbing welding robot with hollow structure

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