JP2002068009A - Working vehicle - Google Patents
Working vehicleInfo
- Publication number
- JP2002068009A JP2002068009A JP2001186472A JP2001186472A JP2002068009A JP 2002068009 A JP2002068009 A JP 2002068009A JP 2001186472 A JP2001186472 A JP 2001186472A JP 2001186472 A JP2001186472 A JP 2001186472A JP 2002068009 A JP2002068009 A JP 2002068009A
- Authority
- JP
- Japan
- Prior art keywords
- steering
- manual
- speed
- transmission
- turning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 72
- 230000005540 biological transmission Effects 0.000 claims abstract description 63
- 230000008859 change Effects 0.000 claims abstract description 41
- 230000009467 reduction Effects 0.000 description 8
- 230000007935 neutral effect Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
Landscapes
- Harvester Elements (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は例えばコンバインな
どの作業車に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working vehicle such as a combine.
【0002】[0002]
【発明が解決しようとする課題】従来、左右走行部にエ
ンジン動力を変速伝達する無段変速部材と、旋回内側の
走行部を減速しかつ旋回外側の走行部を増速させる操向
部材を設ける場合、直進性能を良好に維持して操向操作
性を向上させ、かつ旋回半径も容易に縮少できるが、直
進時と旋回時とで走行速度が略一定に保たれ、旋回半径
が小さいスピンターン動作などを行うとき、手動変速具
によって減速操作を行い、旋回半径に応じた走行速度に
減速させる必要があり、圃場枕地などで方向転換すると
きに旋回操作と走行変速操作の両方を行う必要があり、
例えばスピンターンなどの旋回半径が小さい方向転換な
どの運転操作性の向上などを容易に図り得ない等の問題
がある。Conventionally, a continuously variable transmission member for transmitting the power of the engine to the left and right traveling portions and a steering member for decelerating the traveling portion inside the turning and increasing the speed of the traveling portion outside the turning are conventionally provided. In this case, the steering performance is improved by maintaining good straight running performance, and the turning radius can be easily reduced.However, the running speed is kept substantially constant between straight running and turning, and the spin turning radius is small. When performing a turn operation, etc., it is necessary to perform a deceleration operation using a manual transmission to reduce the traveling speed according to the turning radius, and perform both a turning operation and a traveling speed change operation when turning in a field headland or the like. Need
For example, there is a problem in that it is not easy to improve driving operability such as turning in a small turning radius such as a spin turn.
【0003】[0003]
【課題を解決するための手段】而して本発明は、ミッシ
ョンケースを介してエンジンの駆動力を左右走行部に変
速伝達させる無段変速部材と、前記無段変速部材を手動
変速具によって動作させて左右走行部の速度を制御する
変速機構と、操向油圧ポンプ並びに該ポンプによって駆
動される操向油圧モータを備える操向部材と、前記操向
部材に手動操向具を連結させる操向機構と、手動変速具
の前後進切換に対して手動操向具の操作方向と旋回方向
を一致させる変速及び旋回連動機構と、前記変速機構に
手動操向具を連結させる減速機構を設け、前後進走行の
いずれでも旋回方向を操作方向と一致させる手動操向具
の操向量に応じて走行速度を減速させるもので、作業中
の直進走行及び大きな旋回半径の進路修正動作と、次作
業工程位置などに向けて方向転換させる小さい旋回半径
のスピンターン動作とを、連続した一連の操向操作だけ
でスムーズに行わせ得、例えば往復走行により行う作業
に必要なスピンターンなどの旋回半径が小さい方向転換
を容易に行い得、往復走行により行う作業などの運転操
作の簡略化及び操作性の向上、並びに操舵動作を行わな
い走行クローラなどの走行部の旋回走行機能の向上など
を容易に図り得るものである。According to the present invention, there is provided a continuously variable transmission member which transmits a driving force of an engine to a left and right traveling portion via a transmission case, and the continuously variable transmission member is operated by a manual transmission. A speed change mechanism for controlling the speeds of the left and right traveling portions, a steering hydraulic pump, a steering member including a steering hydraulic motor driven by the pump, and steering for connecting a manual steering device to the steering member. A mechanism, a speed change and turning interlocking mechanism for matching the operation direction and turning direction of the manual steering device with respect to the forward / backward switching of the manual transmission, and a speed reduction mechanism for connecting the manual steering device to the speed change mechanism are provided. The traveling speed is reduced according to the steering amount of the manual steering device that makes the turning direction coincide with the operation direction in any of the forward traveling. Etc. A spin turn operation with a small turning radius to change the direction can be smoothly performed only by a continuous series of steering operations, for example, a direction turning with a small turning radius such as a spin turn necessary for work performed by reciprocating traveling can be performed. It can be easily performed, and simplification of driving operation such as work performed by reciprocating traveling and improvement of operability, and improvement of turning traveling function of traveling section such as traveling crawler that does not perform steering operation can be easily achieved. .
【0004】[0004]
【発明の実施の形態】以下、本発明の実施例を図面に基
づいて詳述する。図1は走行変速及び操向操作部の説明
図、図2はコンバインの全体側面図、図3は同平面図で
あり、図中(1)は走行クローラ(2)を装設するトラ
ックフレーム、(3)は前記トラックフレーム(1)に
架設する機台、(4)はフィードチェン(5)を左側に
張架し扱胴(6)及び処理胴(7)を内蔵している脱穀
機である脱穀部、(8)は刈刃(9)及び穀稈搬送機構
(10)などを備える刈取部、(11)は刈取フレーム
(12)を介して刈取部(8)を昇降させる油圧シリン
ダ、(13)は排藁チェン(14)終端を臨ませる排藁
処理部、(15)は脱穀部(4)からの穀粒を揚穀筒
(16)を介して搬入する穀物タンク、(17)は前記
タンク(15)の穀粒を機外に搬出する排出オーガ、
(18)は丸形操向ハンドル(19)及び運転席(2
0)などを備える運転キャビン、(21)は運転キャビ
ン(18)下方に設けるエンジンであり、連続的に穀稈
を刈取って脱穀するように構成している。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory view of a traveling speed change and steering operation unit, FIG. 2 is an overall side view of the combine, FIG. 3 is a plan view of the combine, (1) is a track frame on which a traveling crawler (2) is mounted, (3) is a machine frame installed on the track frame (1), (4) is a threshing machine which stretches a feed chain (5) to the left side and incorporates a handling cylinder (6) and a processing cylinder (7). A certain threshing unit, (8) a cutting unit provided with a cutting blade (9) and a grain culm transport mechanism (10), (11) a hydraulic cylinder for raising and lowering the cutting unit (8) via a cutting frame (12), (13) a straw processing unit that faces the end of the straw chain (14), (15) a grain tank that carries the grains from the threshing unit (4) through a fryer (16), (17) Is a discharge auger for carrying out the grains of the tank (15) outside the machine,
(18) is a round steering handle (19) and a driver's seat (2)
An operation cabin provided with 0) and the like, and (21) is an engine provided below the operation cabin (18), is configured to continuously cut and thresh grain culm.
【0005】図4に示す如く、前記走行クローラ(2)
を駆動するミッションケース(22)は、1対の第1油
圧ポンプ(23)及び第1油圧モータ(24)からなる
主変速機構である走行用の油圧式無段変速機構(25)
と、1対の第2油圧ポンプ(26)及び第2油圧モータ
(27)からなる操向機構である旋回用の油圧式無段変
速機構(28)とを備え、前記エンジン(21)の出力
軸(21a)に第1油圧ポンプ(23)の入力軸(23
a)を伝達ベルト(29)を介し連動連結させると共
に、第2油圧ポンプ(26)の入力軸(26a)を伝達
ベルト(30)を介し前記第1油圧ポンプ(23)の入
力軸(23a)に連動連結させている。As shown in FIG. 4, the traveling crawler (2)
The transmission case (22) for driving the vehicle is a traveling hydraulic continuously variable transmission mechanism (25) which is a main transmission mechanism including a pair of a first hydraulic pump (23) and a first hydraulic motor (24).
And a turning hydraulic continuously variable transmission mechanism (28), which is a steering mechanism including a pair of second hydraulic pumps (26) and a second hydraulic motor (27), and an output of the engine (21). The input shaft (23) of the first hydraulic pump (23) is connected to the shaft (21a).
a) is linked via a transmission belt (29), and the input shaft (26a) of the second hydraulic pump (26) is connected via the transmission belt (30) to the input shaft (23a) of the first hydraulic pump (23). It is linked and linked.
【0006】そして前記第1油圧モータ(24)の出力
軸(31)に、副変速機構(32)及び差動機構(3
3)を介し走行クローラ(2)の駆動輪(34)を連動
連結させるもので、前記差動機構(33)は左右対称の
1対の遊星ギヤ機構(35)(35)を有し、各遊星ギ
ヤ機構(35)は1つのサンギヤ(36)と、該サンギ
ヤ(36)の外周で噛合う3つのプラネタリギヤ(3
7)と、これらプラネタリギヤ(37)に噛合うリング
ギヤ(38)などで形成している。[0006] An output shaft (31) of the first hydraulic motor (24) is provided with an auxiliary transmission mechanism (32) and a differential mechanism (3).
3) The driving wheels (34) of the traveling crawler (2) are interlocked via 3). The differential mechanism (33) has a pair of symmetrical planetary gear mechanisms (35) and (35). The planetary gear mechanism (35) includes one sun gear (36) and three planetary gears (3) meshing on the outer periphery of the sun gear (36).
7) and a ring gear (38) meshing with these planetary gears (37).
【0007】前記プラネタリギヤ(37)はサンギヤ軸
(39)と同軸線上とのキャリヤ軸(40)のキャリヤ
(41)にそれぞれ回転自在に軸支させ、左右のサンギ
ヤ(36)(36)を挾んで左右のキャリヤ(41)を
対向配置させると共に、前記リングギヤ(38)は各プ
ラネタリギヤ(37)に噛み合う内歯を有してサンギヤ
軸(39)とは同一軸芯状に配置させ、キャリヤ軸(4
0)に回転自在に軸支させている。The planetary gear (37) is rotatably supported on a carrier (41) of a carrier shaft (40) on a coaxial line with a sun gear shaft (39), and sandwiches left and right sun gears (36) and (36). The left and right carriers (41) are arranged facing each other, the ring gear (38) has internal teeth meshing with each planetary gear (37), and is arranged coaxially with the sun gear shaft (39).
0) is rotatably supported.
【0008】また、走行用の油圧式無段変速機構(2
5)は第1油圧ポンプ(23)の回転斜板の角度変更調
節により第1油圧モータ(24)の正逆回転と回転数の
制御を行うもので、第1油圧モータ(24)の回転出力
を出力軸(31)の伝達ギヤ(42)より各ギヤ(4
3)(44)(45)及び副変速機構(32)を介し
て、サンギヤ軸(39)に固定したセンタギヤ(46)
に伝達してサンギヤ(36)を回転するように構成して
いる。前記副変速機構(32)は、前記ギヤ(45)を
有する副変速軸(47)と、前記センタギヤ(46)に
噛合うギヤ(48)を有する車速センサ軸(49)とを
備え、副変速軸(47)とセンサ軸(49)間に各1対
の低速用ギヤ(50)(48)・中速用ギヤ(51)
(52)・高速用ギヤ(53)(54)を設けて、中央
位置のギヤ(51)のスライド操作によってこれら低速
・中速・高速の切換えを可能とさせるように構成してい
る。また前記センサ軸(49)には車速検出ギヤ(5
5)を設けると共に、該ギヤ(55)の回転数より車速
を検出する車速センサ(56)を設けている。なお、作
業機などに回転力を伝達するPTO軸(57)のPTO
入力ギヤ(58)に、PTO伝達ギヤ機構(59)を介
し前記出力軸(31)を連動連結させている。[0008] A hydraulic stepless speed change mechanism (2) for traveling.
5) Controlling the forward / reverse rotation and rotation speed of the first hydraulic motor (24) by adjusting the angle change of the rotary swash plate of the first hydraulic pump (23), and the rotation output of the first hydraulic motor (24). From the transmission gear (42) of the output shaft (31) to each gear (4
3) A center gear (46) fixed to the sun gear shaft (39) via (44) (45) and the auxiliary transmission mechanism (32).
To rotate the sun gear (36). The auxiliary transmission mechanism (32) includes an auxiliary transmission shaft (47) having the gear (45) and a vehicle speed sensor shaft (49) having a gear (48) meshing with the center gear (46). A pair of low-speed gears (50) and (48) and a medium-speed gear (51) between the shaft (47) and the sensor shaft (49).
(52) -High speed gears (53) and (54) are provided to enable switching between low speed, medium speed and high speed by sliding operation of the gear (51) at the center position. The sensor shaft (49) has a vehicle speed detecting gear (5).
5) and a vehicle speed sensor (56) for detecting the vehicle speed from the rotation speed of the gear (55). In addition, the PTO of the PTO shaft (57) that transmits the rotational force to the work equipment, etc.
The output shaft (31) is linked to the input gear (58) via a PTO transmission gear mechanism (59).
【0009】そして、前記センタギヤ(46)を介しサ
ンギヤ軸(39)に伝達された第1油圧モータ(24)
からの駆動力を、左右の遊星ギヤ機構(35)を介しキ
ャリヤ軸(40)に伝達させると共に、該キャリヤ軸
(40)に伝達された回転を左右各一対の減速ギヤ(6
0)(61)を介し左右の駆動輪(34)の左右輪軸
(34a)にそれぞれ伝えるように構成している。The first hydraulic motor (24) transmitted to the sun gear shaft (39) via the center gear (46).
Is transmitted to the carrier shaft (40) through the left and right planetary gear mechanisms (35), and the rotation transmitted to the carrier shaft (40) is transmitted to the pair of left and right reduction gears (6).
0) and (61) to the left and right wheel shafts (34a) of the left and right drive wheels (34), respectively.
【0010】さらに、旋回用の油圧式無段変速機構(2
8)は第2油圧ポンプ(26)の回転斜板の角度変更調
節により第2油圧モータ(27)の正逆回転と回転数の
制御を行うもので、第2油圧モータ(27)の出力軸
(62)の出力ギヤからギヤ伝達機構(63)を介し旋
回入力軸(64)の入力ギヤ(65a)(65b)に回
転出力を伝達し、左側のリングギヤ(38)の外歯を対
しては直接的に、また右側のリングギヤ(38)の外歯
に対しては逆転軸(66)の逆転ギヤ(67)を介し伝
えて、第2油圧モータ(27)の正転時に左右のリング
ギヤ(38)を左右同一回転数で左ギヤ(38)を逆
転、右ギヤ(38)を正転とさせるように構成してい
る。Further, a hydraulic stepless speed change mechanism for turning (2)
8) The forward / reverse rotation of the second hydraulic motor (27) and the control of the rotation speed are performed by adjusting the angle change of the rotary swash plate of the second hydraulic pump (26), and the output shaft of the second hydraulic motor (27) is controlled. The rotation output is transmitted from the output gear of (62) to the input gears (65a) and (65b) of the turning input shaft (64) via the gear transmission mechanism (63), and the outer teeth of the left ring gear (38) are Directly and to the external teeth of the right ring gear (38) via the reverse rotation gear (67) of the reverse rotation shaft (66), the right and left ring gears (38) are rotated when the second hydraulic motor (27) rotates forward. ) Are configured to rotate the left gear (38) in the reverse direction and the right gear (38) in the forward direction at the same left and right rotation speeds.
【0011】而して旋回用の第2油圧モータ(27)の
駆動を停止させ左右リングギヤ(38)を静止固定させ
た状態で、走行用の第1油圧モータ(24)の駆動を行
うと、第1油圧モータ(24)からの回転出力はセンタ
ギヤ(46)から左右のサンギヤ(36)に同一回転数
で伝達され、左右遊星ギヤ機構(35)のプラネタリギ
ヤ(37)・キャリヤ(41)及び減速ギヤ(60)
(61)を介し左右の輪軸(34a)に左右同回転方向
の同一回転数で伝達されて、機体の前後直進走行が行わ
れる。一方、走行用の第1油圧モータ(24)の駆動を
停止させ左右のサンギヤ(36)を静止固定させた状態
で、旋回用の第2油圧モータ(27)を正逆回転駆動す
ると、左側の遊星ギヤ機構(35)が逆或いは正回転、
また右側の遊星ギヤ機構(35)が正或いは逆回転し
て、左右走行クローラ(2)の駆動方向を前後逆方向と
させて機体を左或いは右にその場でスピンターンさせる
ものである。When the driving of the first hydraulic motor (24) for driving is stopped while the driving of the second hydraulic motor (27) for turning is stopped and the left and right ring gears (38) are stationary. The rotation output from the first hydraulic motor (24) is transmitted from the center gear (46) to the left and right sun gears (36) at the same speed, and the planetary gears (37) and the carrier (41) of the left and right planetary gear mechanisms (35) and the reduction gear. Gear (60)
(61) is transmitted to the left and right wheel sets (34a) at the same rotational speed in the same rotational direction in the left and right directions, so that the aircraft travels straight forward and backward. On the other hand, when the driving of the first hydraulic motor (24) for driving is stopped and the left and right sun gears (36) are stationary and fixed, the second hydraulic motor for turning (27) is driven forward and reverse to rotate the left and right sun gears (36). The planetary gear mechanism (35) rotates in reverse or forward,
In addition, the right planetary gear mechanism (35) rotates forward or reverse to make the driving direction of the left and right traveling crawlers (2) forward and backward, thereby causing the airframe to spin left or right on the spot.
【0012】また走行用の第1油圧モータ(24)を駆
動させながら、旋回用の第2油圧モータ(27)を駆動
して機体を左右に旋回させる場合には旋回半径の大きい
旋回を可能にできるもので、その旋回半径は左右走行ク
ローラ(2)の速度に応じ決定される。When the first hydraulic motor (24) for driving is driven and the second hydraulic motor (27) for turning is driven to turn the body left and right, turning with a large turning radius is enabled. The turning radius is determined according to the speed of the left and right traveling crawlers (2).
【0013】図1、図5乃至図12に示す如く、前記走
行用の油圧式無段変速機構(25)に連結する主変速レ
バー(68)と、旋回用の油圧式無段変速機構(28)
に連結する操向ハンドル(19)とを、連動手段である
変速及び旋回連動機構(69)に連動連結させると共
に、該連動機構(69)を走行変速及び操向リンク機構
(70)(71)介し走行及び操向用の無段変速機構
(25)(28)のコントロールレバー(72)(7
3)に連動連結させている。As shown in FIGS. 1, 5 to 12, a main transmission lever (68) connected to the traveling hydraulic continuously variable transmission mechanism (25) and a turning hydraulic continuously variable transmission mechanism (28). )
And a steering handle (19), which is linked to the gearshift and turning interlocking mechanism (69), which is an interlocking means, and the interlocking mechanism (69) is linked to a traveling speed change and steering link mechanism (70) (71). The control levers (72) (7) of the continuously variable transmission mechanism (25) (28) for traveling and steering through
Linked to 3).
【0014】前記連動機構(69)は、主変速レバー
(68)の基端折曲部(68a)を筒軸(74)に左右
揺動自在に支持する回動板(75)と、機体側の本機フ
レーム(76)に固設して前記回動板(75)を左右方
向の第1枢軸(77)を介し前後回動自在に支持する固
定取付板(78)と、前記枢軸(77)とは直交する前
後方向の第2枢軸(79)を介して回動板(75)に連
結させて該軸(79)回りに回動自在に設ける変速操作
部材(80)と、前記第2枢軸(79)の軸回りに回動
自在に連結させる操向操作部材(81)とを備え、変速
及び操向操作部材(80)(81)の第2枢軸(79)
とは偏心位置の各操作出力部(80a)(81a)を変
速及び操向リンク機構(70)(71)に連動連結させ
ている。The interlocking mechanism (69) includes a rotating plate (75) for supporting the base bent portion (68a) of the main transmission lever (68) on the cylinder shaft (74) so as to be able to swing left and right, and a body side. A fixed mounting plate (78) fixedly mounted on the frame (76) of the main body and supporting the rotating plate (75) rotatably back and forth via a first pivot (77) in the left-right direction; and the pivot (77). A) a speed change operation member (80) that is connected to a rotation plate (75) via a second pivot (79) in the front-rear direction orthogonal to the second direction and is provided rotatably around the shaft (79); A steering operation member (81) rotatably connected around an axis of the pivot (79), and a second pivot (79) of the speed change and steering operation members (80) (81).
Means that the operation output sections (80a) (81a) at the eccentric position are linked to the speed change and steering link mechanisms (70) (71).
【0015】前記変速及び操向リンク機構(70)(7
1)は、連動機構(69)後方位置で本機フレーム(7
6)側に揺動軸(82)外側の揺動筒軸(83)を介し
支持する変速アーム(84)と、前記揺動軸(82)に
基端を固設する操向アーム(85)と、前記出力部(8
0a)(81a)の各操作出力軸(86)(87)と各
アーム(84)(85)間を連結する自在継手軸(8
8)(89)と、前記筒軸(83)及び揺動軸(82)
の右端に固設する変速及び操向出力アーム(90)(9
1)と、前記運転キャビン(18)の回動支点軸(9
2)の支点軸受(93)に取付ける中間軸(94)に回
転自在に設ける変速及び操向用第1揺動アーム(95)
(96)と、前記出力アーム(90)(91)と第1揺
動アーム(95)(96)の各先端間をそれぞれ連結す
る変速及び操向用自在継手形第1ロッド(97)(9
8)と、前記中間軸(94)に設けて第1揺動アーム
(95)(96)に一体連結する変速及び操向用第2揺
動アーム(99)(100)と、前記ミッションケース
(22)上部の軸受板(101)に取付ける支軸(10
2)に回動自在に支持させる変速及び操向用筒軸(10
3)(104)と、該筒軸(103)(104)に基端
を固設する第1揺動アーム(105)(106)と前記
第2揺動アーム(99)(100)の各先端間を連結す
る変速及び操向用自在継手形第2ロッド(107)(1
08)と、前記筒軸(103)(104)に基端を固設
する第2揺動アーム(109)(110)と前記コント
ロールレバー(72)(73)の各先端間を連結させる
変速及び操向用自在継手形第3ロッド(111)(11
2)とを備え、前記第1枢軸(77)を中心とした走行
操作部材(80)の回動によって走行用のコントロール
レバー(72)を、また走行中の第2枢軸(79)を中
心とした操向操作部材(81)の回動によって操向用の
コントロールレバー(73)を操作して変速及び操向制
御を行うように構成している。The speed change and steering link mechanism (70) (7)
1) is the frame (7) at the rear of the interlocking mechanism (69).
6) A speed change arm (84) supported on the side of the swing shaft (82) via a swing cylinder shaft (83) outside the swing shaft (82), and a steering arm (85) having a base end fixed to the swing shaft (82). And the output unit (8
0a) The universal joint shaft (8) connecting between the operation output shafts (86) (87) of (81a) and the arms (84) (85).
8) (89), the cylinder shaft (83) and the swing shaft (82)
Speed change and steering output arm (90) (9)
1) and a rotation fulcrum shaft (9) of the driving cabin (18).
First swing and steering first swing arm (95) provided rotatably on an intermediate shaft (94) attached to the fulcrum bearing (93) of 2).
(96) and a universal joint type first rod (97) (9) for shifting and steering, which connects between the respective ends of the output arm (90) (91) and the first swing arm (95) (96).
8), a speed change and steering second swing arm (99) (100) provided on the intermediate shaft (94) and integrally connected to the first swing arm (95) (96), and the transmission case ( 22) A spindle (10) attached to the upper bearing plate (101)
The transmission and steering cylinder shaft (10) rotatably supported by 2)
3) (104), and first ends of the first swing arms (105) and (106) and the second swing arms (99) and (100) having bases fixed to the cylindrical shafts (103) and (104). Speed change and steering universal joint type second rod (107) (1
08), and a speed change for connecting the second swinging arms (109) (110) having their base ends fixed to the cylinder shafts (103) (104) and the respective distal ends of the control levers (72) (73). Steering universal joint type third rod (111) (11)
2), the traveling control member (72) is rotated by the rotation of the traveling operation member (80) around the first pivot (77), and the traveling second pivot (79) is moved around the traveling second pivot (79). The steering control lever (73) is operated by the rotation of the steering operation member (81) to perform the speed change and the steering control.
【0016】一方前記操向ハンドル(19)下端のハン
ドル操作軸(113)にギヤ(114)を設けて、この
後方の回転軸(115)に取付けるセクタギヤ(11
6)に前記ギヤ(114)を噛合せると共に、前記主変
速レバー(68)位置下方に配設する操向軸(117)
の第1揺動アーム(118)と、前記回転軸(115)
に基端を固設する出力アーム(119)との各先端間を
操向リンク機構である自在継手形操向第1ロッド(12
0)を介して連結させ、操向軸(117)の第1揺動ア
ーム(118)と一体の第2揺動アーム(121)を、
前記自在継手軸(89)の前端に自在継手形操向第2ロ
ッド(122)を介して連結させ、前記ハンドル(1
9)の回動操作によって前記第2枢軸(79)を中心と
して操向操作部材(81)を回動するように構成してい
る。On the other hand, a gear (114) is provided on the handle operation shaft (113) at the lower end of the steering handle (19), and the sector gear (11) attached to the rear rotation shaft (115).
6) meshing the gear (114) with the steering shaft (117) disposed below the position of the main shift lever (68).
The first swing arm (118) and the rotating shaft (115)
A universal joint type steering first rod (12) serving as a steering link mechanism is provided between each of the distal ends of the output arm (119) and the output arm (119) having the base end fixed thereto.
0), and a second swing arm (121) integrated with the first swing arm (118) of the steering shaft (117),
The universal joint shaft (89) is connected to the front end of the universal joint type steering second rod (122) via the handle (1).
The steering operation member (81) is configured to rotate around the second pivot (79) by the rotation operation of (9).
【0017】また、前記ハンドル操作軸(113)のギ
ヤ(114)下方に中立位置決め板(123)を設けて
いて、該位置決め板(123)下面の突出軸(124)
に操向検出リンク(125)の一端を連結させ、前記回
転軸(115)の右側に配設する減速アーム軸(12
6)の第1揺動アーム(127)と前記検出リンク(1
25)の他端長孔(125a)とを軸(128)を介し
連結させると共に、前記操向軸(117)の減速アーム
(129)と減速アーム軸(126)の第2揺動アーム
(130)との各先端間を減速リンク機構である自在継
手形第1減速ロッド(131)で連結させ、前記変速操
作部材(80)の最右端の減速伝達軸(132)と第2
揺動アーム(130)の他端間を自在継手形第2減速ロ
ッド(133)で連結させて、走行状態で前記ハンドル
(19)の操向量を大とする程第2減速ロッド(13
3)を下方に引張って走行速度を減速させるように構成
している。A neutral positioning plate (123) is provided below the gear (114) of the handle operation shaft (113), and a projection shaft (124) on the lower surface of the positioning plate (123).
To one end of a steering detection link (125), and a reduction arm shaft (12) disposed on the right side of the rotation shaft (115).
6) the first swing arm (127) and the detection link (1).
25) is connected to the other long hole (125a) via a shaft (128), and the reduction arm (129) of the steering shaft (117) and the second swing arm (130) of the reduction arm shaft (126) are connected. ) Are connected by a universal joint type first deceleration rod (131) which is a deceleration link mechanism, and the rightmost deceleration transmission shaft (132) of the speed change operation member (80) is connected to the second deceleration transmission shaft (132).
The other end of the swing arm (130) is connected by a universal joint type second deceleration rod (133), and the larger the steering amount of the handle (19) in the running state, the larger the second deceleration rod (13).
3) is pulled downward to reduce the traveling speed.
【0018】ところで前記変速及び操向操作部材(8
0)(81)を軸回りに回動可能とさせる第2枢軸(7
9)と、操向アーム(85)と継手軸(89)との自在
継手部(89a)とを前後方向の水平ライン(L1)上
に位置させ、また前記操作出力軸(86)(87)と自
在継手軸(88)(89)との自在継手部(88b)
(89b)と、第1枢軸(77)とを前記ライン(L
1)に直交させる左右水平ライン(L2)上に位置さ
せ、さらに前記変速アーム(84)と継手軸(88)と
の自在継手部(88a)と前記継手部(89a)とを前
記ライン(L2)と平行な左右水平ライン(L3)上に
位置させて、主変速レバー(68)及び操向ハンドル
(19)の中立保持時に、これら何れか一方が操作され
ても、各操作部材(80)(81)を第1及び第2枢軸
(77)(79)の軸回りに回動させるのみとさせて、
継手軸(88)(89)には操作力を作用させないもの
である。The speed change and steering operation member (8)
0) (81) can be rotated around the axis.
9) and the universal joint (89a) of the steering arm (85) and the joint shaft (89) are positioned on the horizontal line (L1) in the front-rear direction, and the operation output shafts (86) (87) Joint part (88b) between the universal joint shaft (88) and the universal joint shaft (89)
(89b) and the first pivot (77) are connected to the line (L).
1) is located on a horizontal horizontal line (L2) orthogonal to the line (L2). Further, the universal joint (88a) between the transmission arm (84) and the joint shaft (88) and the joint (89a) are connected to the line (L2). ) Are positioned on the left and right horizontal lines (L3) parallel to the main shift lever (68) and the steering handle (19), even if one of them is operated when the neutral position is maintained. (81) is only rotated about the first and second pivots (77) and (79),
No operating force is applied to the joint shafts (88) and (89).
【0019】そして図8にも示す如く、主変速レバー
(68)の前後進操作で、第1枢軸(77)を中心とし
て操作部材(80)を前後に角度(α1)(α2)傾け
るとき前記継手軸(88)を引張って或いは押して変速
アーム(84)を動作させて走行速度の前後進の切換え
を行うと共に、図9に示す如くこの状態中(主変速レバ
ー(68)が中立以外のとき)に操向ハンドル(19)
の回動操作で第2枢軸(79)を中心として操作部材
(81)を上下に角度(β1)(β2)傾けるとき継手
軸(89)を引張って或いは押して操向アーム(85)
を動作させて機体の左及び右旋回を行うものである。
(主変速の中立時に旋回操作を行っても継手軸(89)
はライン(L1)を中心とした円錐面上にも移動する状
態となって継手部(89a)(89b)間の距離は変化
しない。)As shown in FIG. 8, when the operation member (80) is tilted back and forth by the angle (α1) (α2) about the first pivot (77) by the forward and backward operation of the main shift lever (68), By operating the speed change arm (84) by pulling or pushing the joint shaft (88), the traveling speed is switched between forward and backward, and in this state as shown in FIG. 9 (when the main speed change lever (68) is other than neutral). ) To the steering wheel (19)
When the operation member (81) is tilted up and down by an angle (β1) (β2) about the second pivot (79) by the turning operation of the steering arm (85), the joint shaft (89) is pulled or pushed.
Is operated to turn the body left and right.
(Coupling shaft (89) even if turning operation is performed when the main shift is in neutral)
Is also moved on a conical surface centered on the line (L1), and the distance between the joints (89a) (89b) does not change. )
【0020】上記から明らかなように、ミッションケー
ス(22)を介してエンジン(21)の駆動力を左右走
行部である走行クローラ(2)に変速伝達させる無段変
速部材である油圧式無段変速機構(25)と、前記無段
変速機構(25)を手動変速具である主変速レバー(6
8)によって動作させて左右走行クローラ(2)の速度
を制御する変速機構である変速リンク機構(70)と、
操向油圧ポンプである第2油圧ポンプ(26)並びに該
ポンプ(26)によって駆動される操向油圧モータであ
る第2油圧モータ(27)を備える操向部材である油圧
式無段変速機構(28)と、前記操向用の無段変速機構
(28)に手動操向具である操向ハンドル(19)を連
結させる操向機構である操向リンク機構(71)と、主
変速レバー(68)の前後進切換に対して操向ハンドル
(19)の操作方向と旋回方向を一致させる変速及び旋
回連動機構(69)と、前記変速リンク機構(70)に
操向ハンドル(19)を連結させる減速機構である減速
ロッド(131)を設け、前後進走行のいずれでも旋回
方向を操作方向と一致させる操向ハンドル(19)の操
向量に応じて走行速度を減速させる。そして、作業中の
直進走行及び大きな旋回半径の進路修正動作と、次作業
工程位置などに向けて方向転換させる小さい旋回半径の
スピンターン動作とを、連続した一連の操向操作だけで
スムーズに行わせ、例えば往復走行により行う作業に必
要なスピンターンなどの旋回半径が小さい方向転換を行
い、往復走行により行う作業などの運転操作の簡略化及
び操作性の向上、並びに操舵動作を行わない走行クロー
ラ(2)などの走行部の旋回走行機能の向上などを図
る。As is apparent from the above description, a hydraulic stepless transmission member which is a stepless transmission member for transmitting the driving force of the engine (21) to the traveling crawler (2) which is a left and right traveling section via the transmission case (22). A transmission mechanism (25) and the continuously variable transmission mechanism (25) are connected to a main transmission lever (6) as a manual transmission.
8) a speed change link mechanism (70), which is a speed change mechanism that controls the speed of the left and right traveling crawlers (2) by operating according to (8);
A second hydraulic pump (26) that is a steering hydraulic pump and a hydraulic stepless transmission mechanism (a steering member including a second hydraulic motor (27) that is a steering hydraulic motor driven by the pump (26)) 28), a steering link mechanism (71) that is a steering mechanism for connecting a steering handle (19) that is a manual steering tool to the steering continuously variable transmission mechanism (28), and a main transmission lever ( A speed change and turning interlocking mechanism (69) that matches the operating direction of the steering handle (19) with the turning direction for the forward / reverse switching of (68), and the steering handle (19) is connected to the speed change link mechanism (70). A deceleration rod (131) is provided as a deceleration mechanism for reducing the traveling speed in accordance with the steering amount of the steering handle (19) for making the turning direction coincide with the operation direction in both forward and backward traveling. Then, straight running during operation and course correction operation with a large turning radius, and spin turn operation with a small turning radius for turning to the next work process position, etc., can be smoothly performed only by a continuous series of steering operations. For example, a traveling crawler that changes direction with a small turning radius such as a spin turn necessary for work performed by reciprocating traveling, simplifies driving operation such as work performed by reciprocating traveling, improves operability, and does not perform steering operation. (2) To improve the turning traveling function of the traveling section and the like.
【0021】また図11にも示す如く、前記操向ハンド
ル(19)に設ける検出リンク(125)は中立位置よ
り右或いは左旋回操作の何れにおいても第1揺動アーム
(127)を同一方向に角度(θ)の範囲で回動させて
第2減速ロッド(133)を常に引張る状態とさせて、
前進操作時の操作部材(80)が角度(α1)側に傾い
てるときには、継手部(88a)(88b)間の距離を
縮め、また後進操作時の操作部材(80)が角度(α
2)側に傾いているときには、継手部(88a)(88
b)間の距離を大きくして、変速アーム(84)をそれ
ぞれ中立方向の低速側に変位させて、その旋回量に応じ
た減速を行うものである。As shown in FIG. 11, the detection link (125) provided on the steering handle (19) moves the first swing arm (127) in the same direction in either the right or left turning operation from the neutral position. By rotating in the range of the angle (θ), the second deceleration rod (133) is always pulled,
When the operating member (80) at the time of the forward operation is inclined toward the angle (α1), the distance between the joints (88a) and (88b) is reduced, and the operating member (80) at the time of the reverse operation is moved to the angle (α).
2) When inclined to the side, the joints (88a) (88
b), the distance between them is increased, and the speed change arms (84) are respectively displaced toward the low speed side in the neutral direction to perform deceleration according to the turning amount.
【0022】さらに、変速及び操向の操作力を伝達する
前記第1ロッド(97)(98)と揺動アーム(95)
(96)の自在継手部(97a)(98a)の中心を、
運転キャビン(18)の回動支点軸(92)位置に一致
させて、変速及び操向の中立保持においてはこれらの操
作系を取外すことなく運転キャビン(18)の前方向へ
の回動を可能とさせるように構成している。Further, the first rods (97) and (98) and the swing arm (95) for transmitting the shifting and steering operation force.
The center of the universal joint (97a) (98a) of (96)
The driving cabin (18) can be turned forward without removing these operation systems when shifting and steering is kept neutral by matching the position of the rotation fulcrum shaft (92) of the driving cabin (18). It is configured to be.
【0023】[0023]
【発明の効果】以上実施例から明らかなように本発明
は、ミッションケース(22)を介してエンジン(2
1)の駆動力を左右走行部(2)に変速伝達させる無段
変速部材(25)と、前記無段変速部材(25)を手動
変速具(68)によって動作させて左右走行部(2)の
速度を制御する変速機構(70)と、操向油圧ポンプ
(26)並びに該ポンプ(26)によって駆動される操
向油圧モータ(27)を備える操向部材(28)と、前
記操向部材(28)に手動操向具(19)を連結させる
操向機構(71)と、手動変速具(68)の前後進切換
に対して手動操向具(19)の操作方向と旋回方向を一
致させる変速及び旋回連動機構(69)と、前記変速機
構(70)に手動操向具(19)を連結させる減速機構
(131)を設け、前後進走行のいずれでも旋回方向を
操作方向と一致させる手動操向具(19)の操向量に応
じて走行速度を減速させるもので、作業中の直進走行及
び大きな旋回半径の進路修正動作と、次作業工程位置な
どに向けて方向転換させる小さい旋回半径のスピンター
ン動作とを、連続した一連の操向操作だけでスムーズに
行わせることができ、例えば往復走行により行う作業に
必要なスピンターンなどの旋回半径が小さい方向転換を
容易に行うことができ、往復走行により行う作業などの
運転操作の簡略化及び操作性の向上、並びに操舵動作を
行わない走行クローラ(2)などの走行部の旋回走行機
能の向上などを容易に図ることができるものである。As is clear from the above embodiment, the present invention provides the engine (2) via the transmission case (22).
A continuously variable transmission member (25) for transmitting the driving force of 1) to the left and right traveling unit (2) at a speed change; A steering mechanism (70) including a transmission mechanism (70) for controlling the speed of the steering, a steering hydraulic pump (26), and a steering hydraulic motor (27) driven by the pump (26); The steering mechanism (71) for connecting the manual steering device (19) to (28) and the operation direction of the manual steering device (19) and the turning direction coincide with each other when the manual transmission (68) is switched between forward and backward. A speed change and turning interlocking mechanism (69) and a speed reducing mechanism (131) for connecting a manual steering device (19) to the speed changing mechanism (70) are provided so that the turning direction matches the operation direction in both forward and backward running. The traveling speed is reduced according to the steering amount of the manual steering gear (19). Smooth straight-running operation and path correction operation with large turning radius during work, and spin-turn operation with small turning radius to change direction to the next work process position, etc., with only a series of continuous steering operations For example, it is possible to easily change the direction with a small turning radius such as a spin turn required for the work performed by reciprocating travel, and to simplify the driving operation such as the work performed by reciprocating travel and to improve the operability. It is possible to easily improve the turning performance of the traveling section such as the traveling crawler (2) that does not perform the steering operation.
【図1】走行変速及び操向操作部の説明図。FIG. 1 is an explanatory diagram of a traveling speed change and steering operation unit.
【図2】コンバインの全体側面図。FIG. 2 is an overall side view of the combine.
【図3】コンバインの全体平面図。FIG. 3 is an overall plan view of the combine.
【図4】ミッション駆動系の説明図。FIG. 4 is an explanatory diagram of a mission drive system.
【図5】操作部の正面説明図。FIG. 5 is an explanatory front view of an operation unit.
【図6】操作部の平面説明図。FIG. 6 is an explanatory plan view of an operation unit.
【図7】操作部の側面説明図。FIG. 7 is an explanatory side view of the operation unit.
【図8】操作部材の側面説明図。FIG. 8 is an explanatory side view of the operation member.
【図9】操作部材の正面説明図。FIG. 9 is an explanatory front view of an operation member.
【図10】操作部材の平面説明図。FIG. 10 is an explanatory plan view of an operation member.
【図11】操向ハンドル部の平面説明図。FIG. 11 is an explanatory plan view of a steering handle.
【図12】リンク機構部の平面説明図。FIG. 12 is an explanatory plan view of a link mechanism.
(2) 走行クローラ(走行部) (19) 操向ハンドル(手動操向具) (25) 油圧式無段変速機構(無段変速部材) (26) 第2油圧ポンプ(操向油圧ポンプ) (27) 第2油圧モータ(操向油圧モータ) (28) 油圧式無段変速機構(操向部材) (68) 主変速レバー(手動変速具) (69) 変速及び旋回連動機構 (70) 変速リンク機構(変速機構) (71) 操向リンク機構(操向機構) (131) 減速ロッド(減速機構) (2) Traveling crawler (traveling part) (19) Steering handle (manual steering tool) (25) Hydraulic stepless transmission mechanism (stepless transmission member) (26) Second hydraulic pump (steering hydraulic pump) ( 27) Second hydraulic motor (steering hydraulic motor) (28) Hydraulic continuously variable transmission mechanism (steering member) (68) Main transmission lever (manual transmission) (69) Shifting and turning interlocking mechanism (70) Transmission link Mechanism (transmission mechanism) (71) Steering link mechanism (steering mechanism) (131) Reduction rod (reduction mechanism)
Claims (1)
ジン(21)の駆動力を左右走行部(2)に変速伝達さ
せる無段変速部材(25)と、前記無段変速部材(2
5)を手動変速具(68)によって動作させて左右走行
部(2)の速度を制御する変速機構(70)と、操向油
圧ポンプ(26)並びに該ポンプ(26)によって駆動
される操向油圧モータ(27)を備える操向部材(2
8)と、前記操向部材(28)に手動操向具(19)を
連結させる操向機構(71)と、手動変速具(68)の
前後進切換に対して手動操向具(19)の操作方向と旋
回方向を一致させる変速及び旋回連動機構(69)と、
前記変速機構(70)に手動操向具(19)を連結させ
る減速機構(131)を設け、前後進走行のいずれでも
旋回方向を操作方向と一致させる手動操向具(19)の
操向量に応じて走行速度を減速させることを特徴とする
作業車。1. A continuously variable transmission member (25) for transmitting a driving force of an engine (21) to a left and right traveling portion (2) through a transmission case (22) through a transmission, and a continuously variable transmission member (2).
5) a manual transmission (68) to operate the speed change mechanism (70) for controlling the speed of the left and right running part (2), a steering hydraulic pump (26), and a steering driven by the pump (26). A steering member (2) including a hydraulic motor (27)
8), a steering mechanism (71) for connecting a manual steering device (19) to the steering member (28), and a manual steering device (19) for forward / reverse switching of the manual transmission (68). A speed change and turning interlocking mechanism (69) for matching the operating direction of the vehicle with the turning direction;
The speed change mechanism (70) is provided with a deceleration mechanism (131) for connecting a manual steering device (19) to the steering amount of the manual steering device (19) for making the turning direction coincide with the operation direction in both forward and backward traveling. A work vehicle, wherein the traveling speed is reduced according to the speed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001186472A JP3463874B2 (en) | 2001-06-20 | 2001-06-20 | Work vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001186472A JP3463874B2 (en) | 2001-06-20 | 2001-06-20 | Work vehicle |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18545996A Division JP3654387B2 (en) | 1996-06-25 | 1996-06-25 | Combine operating device |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2002068009A true JP2002068009A (en) | 2002-03-08 |
JP3463874B2 JP3463874B2 (en) | 2003-11-05 |
Family
ID=19025910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001186472A Expired - Lifetime JP3463874B2 (en) | 2001-06-20 | 2001-06-20 | Work vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3463874B2 (en) |
-
2001
- 2001-06-20 JP JP2001186472A patent/JP3463874B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP3463874B2 (en) | 2003-11-05 |
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