JP3914225B2 - Crawler work vehicle - Google Patents
Crawler work vehicle Download PDFInfo
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- JP3914225B2 JP3914225B2 JP2004280467A JP2004280467A JP3914225B2 JP 3914225 B2 JP3914225 B2 JP 3914225B2 JP 2004280467 A JP2004280467 A JP 2004280467A JP 2004280467 A JP2004280467 A JP 2004280467A JP 3914225 B2 JP3914225 B2 JP 3914225B2
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Description
本発明はコンバインにおいて走行速度を変速する主変速レバーなど備えた操作装置に関する。 The present invention relates to an operating device provided with a main shift lever or the like for shifting a traveling speed in a combine.
従来、変速レバーでもって油圧走行機構を、また操向ハンドルでもって油圧操向機構をそれぞれ別個に操作して機体の走行の変速や、機体の旋回が行われている。 Conventionally, the hydraulic travel mechanism and the hydraulic steering mechanism are separately operated by the shift lever and the steering handle, respectively, to change the traveling speed of the aircraft and to turn the aircraft.
しかし乍らこのような従来手段の場合常に２つの操作を必要にして作業が煩わしいばかりでなく、調整作業においてもそれぞれに必要として精度の確保も極めて困難なものであった。また旋回作業時には走行速度を安全な速度まで減速させる手間の煩わしさがあった。 However, in the case of such conventional means, not only is it always necessary to perform two operations, but the operation is troublesome, and it is extremely difficult to ensure the accuracy required for each adjustment operation. Further, there is a troublesome effort to reduce the traveling speed to a safe speed during the turning work.
而して本発明は、変速レバーでもって、１対の第１油圧ポンプ及び第１油圧モータ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である、左右対称の一対の遊星ギヤ機構に連動連結された油圧変速機構を、また操向ハンドルでもって、１対の第２油圧ポンプ及び第２油圧モータからなる操向機構である旋回用の油圧式無段変速機構である、前記遊星ギヤ機構に連動連結された油圧操向機構を操作して、走行の変速及び機体の旋回を行うようにしたコンバインの操作装置において、変速レバーでもって操作される変速操作部材と、操向ハンドルでもって操作される操向操作部材とを一体的に連動連結する連動手段を設けると共に、操向ハンドルの操向量に応じて走行速度を減速する車速減速手段を設けて、例えば運転操作部近傍の１箇所位置に一体的に設ける各操作部材からそれぞれ必要とする変速及び旋回操作力を正確に出力させて、走行変速や旋回作業における操作性と作業能率の向上を図るもので、また旋回作業時には自動的にその操向量に応じて減速して良好な作業が行われるものである。 Thus, the present invention provides a pair of symmetrical planetary gears, which are a hydraulic continuously variable transmission mechanism for traveling, which is a main transmission mechanism including a pair of first hydraulic pump and first hydraulic motor with a shift lever. A hydraulic continuously variable transmission mechanism for turning which is a steering mechanism comprising a pair of second hydraulic pump and a second hydraulic motor, and a hydraulic transmission mechanism linked to the mechanism and having a steering handle; by operating the hydraulic steering mechanism that is operatively connected to a planetary gear mechanism, the operating device combined with to perform the shifting and turning of the aircraft run lines, a shift operating member that is operated with a shift lever, steering Provided with interlocking means for integrally interlocking connection with the steering operation member operated by the steering wheel, and also provided with vehicle speed reduction means for reducing the traveling speed according to the steering amount of the steering handle, for example, near the driving operation unit One of The required shifting and turning operation force is accurately output from each operation member provided integrally at the position to improve operability and work efficiency in traveling shift and turning work, and automatically during turning work In accordance with the amount of steering, the work is decelerated and good work is performed.
また、操向ハンドルに連動して操向量を検出する操向検出リンクを設け、変速操作部材に検出リンクを連動連結させて、簡単な検出手段によって操向量に応じた車速の減速制御を可能とさせて作業性を向上させることができる。
さらに、変速操作部材に自在継手形の減速ロッドである減速リンク機構を介し検出リンクを連動連結させて、簡単なリンク構造のもので、操向量に応じた車速の減速制御を容易に可能とさせてこの操作性と作業性を向上させることができる。
In addition, a steering detection link that detects the steering amount in conjunction with the steering handle is provided, and the detection link is linked to the speed change operation member so that the vehicle speed can be controlled according to the steering amount by simple detection means. Thus, workability can be improved.
Furthermore, the detection link is linked to the speed change operation member via a speed reduction link mechanism, which is a universal joint type speed reduction rod, and a simple link structure makes it possible to easily control the vehicle speed according to the steering amount. The operability and workability of the lever can be improved.
以上実施例から明らかなように本発明は、変速レバー（６８）でもって、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である、左右対称の一対の遊星ギヤ機構（３５）（３５）に連動連結された油圧変速機構（２５）を、また操向ハンドル（１９）でもって、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である、遊星ギヤ機構（３５）（３５）に連動連結された油圧操向機構（２８）を操作して、走行の変速及び機体の旋回を行うようにしたコンバインの操作装置において、変速レバー（２８）でもって操作される変速操作部材（８０）と、操向ハンドル（１９）でもって操作される操向操作部材（８１）とを一体的に連動連結する連動手段（６９）を設けると共に、操向ハンドル（１９）の操向量に応じて走行速度を減速する車速減速手段を設けたものであるから、例えば運転操作部近傍の１箇所位置に一体的に設ける各操作部材（８０）（８１）から必要とする変速及び旋回操作力を正確に出力させて、走行変速や旋回作業における操作性と作業能率の向上を図ることができるもので、また旋回作業時には自動的にその操向量に応じて減速できて良好な作業を行うことができる。 As is clear from the above embodiments, the present invention is a hydraulic system for traveling which is a main transmission mechanism including a pair of first hydraulic pump (23) and first hydraulic motor (24) with a shift lever (68). A hydraulic transmission mechanism (25) interlocked with a pair of symmetrical planetary gear mechanisms (35) and (35), which is a continuously variable transmission mechanism, and a steering handle (19), a pair of second hydraulic pressures. A hydraulic steering mechanism (35, 35) linked to the planetary gear mechanism (35) (35), which is a hydraulic continuously variable transmission mechanism for turning, which is a steering mechanism including a pump (26) and a second hydraulic motor (27). 28) by operating the the operating device of the combine which to perform the shifting and turning of the aircraft run lines, a shift operating member that is operated with a shift lever (28) (80), the steering wheel (19) Steering operation member (8 ) And a vehicle speed reduction means for reducing the traveling speed in accordance with the steering amount of the steering handle (19). The required shifting and turning operation force is accurately output from each of the operation members (80) (81) provided integrally at one position in the vicinity to improve the operability and work efficiency in traveling shift and turning work. In addition, at the time of turning work, it is possible to automatically decelerate according to the amount of steering and perform good work.
また、操向ハンドル（１９）に連動して操向量を検出する操向検出リンク（１２５）を設け、変速操作部材（８０）に検出リンク（１２５）を連動連結させるものであるから、簡単な検出手段によって操向量に応じた車速の減速制御を可能にできて、作業性を向上させることができる。 Further, since the steering detection link (125) for detecting the steering amount is provided in conjunction with the steering handle (19), and the detection link (125) is linked to the transmission operation member (80), it is simple. The detection means can control the deceleration of the vehicle speed in accordance with the steering amount, and can improve workability.
さらに、変速操作部材（８０）に自在継手形の減速ロッドである減速リンク機構（１３１）を介し検出リンク（１２５）を連動連結させて、簡単なリンク構造のもので、操向量に応じた車速の減速制御を容易に可能とさせることができてこの操作性と作業性を向上させることができるものである。 In addition, the detection link (125) is interlocked and connected to the speed change operation member (80) via a speed reduction link mechanism (131) that is a universal joint type speed reduction rod, so that the vehicle speed according to the steering amount is obtained. Thus, the speed reduction control can be easily performed, and this operability and workability can be improved.
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（２０）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 thereof, and (1) is a track frame for mounting a traveling crawler (2), (3) is a machine base installed on the track frame (1), (4) is a threshing machine with a feed chain (5) stretched to the left and a handling cylinder (6) and a processing cylinder (7) built in. A threshing unit, (8) a cutting unit including a cutting blade (9) and a culm transport mechanism (10), and (11) a hydraulic cylinder that moves the cutting unit (8) up and down via a cutting frame (12), (13) is a waste processing section that faces the end of the waste chain (14), (15) is a grain tank that carries the grain from the threshing section (4) through the milled cylinder (16), (17) Is a discharge auger for unloading the grain of the tank (15), (18) is a round steering handle (19) and Driver's seat (20) operating cabin comprising etc., are configured to threshing harvests (21) the driver cabin (18) an engine provided below, continuously culms.
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（２３ａ）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 transmission case (22) for driving the travel crawler (2) is a main transmission mechanism comprising a pair of first hydraulic pump (23) and first hydraulic motor (24). A hydraulic continuously variable transmission mechanism (25) and a turning hydraulic continuously variable transmission mechanism (28) which is a steering mechanism including a pair of second hydraulic pump (26) and a second hydraulic motor (27). An input shaft (23a) of the first hydraulic pump (23) is linked to the output shaft (21a) of the engine (21) via a transmission belt (29), and the input shaft of the second hydraulic pump (26) (26a) is linked to the input shaft (23a) of the first hydraulic pump (23) via a transmission belt (30).
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（３３）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（３７）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。 The drive shaft (34) of the traveling crawler (2) is interlockedly connected to the output shaft (31) of the first hydraulic motor (24) via the subtransmission mechanism (32) and the differential mechanism (33). The differential mechanism (33) has a pair of left and right symmetrical planetary gear mechanisms (35) and (35). Each planetary gear mechanism (35) has one sun gear (36) and an outer periphery of the sun gear (36). Are formed by three planetary gears (37) meshed with each other and a ring gear (38) meshed with these planetary gears (37).
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（４０）に回転自在に軸支させている。 The planetary gear (37) is rotatably supported by a carrier (41) of a carrier shaft (40) coaxial with the sun gear shaft (39), and the left and right sun gears (36) (36) are sandwiched between the left and right carriers. The ring gear (38) has internal teeth that mesh with the planetary gears (37) and is arranged on the same axis as the sun gear shaft (39), and rotates on the carrier shaft (40). The shaft is supported freely.
また、走行用の油圧式無段変速機構（２５）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（４３）（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（５５）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。 The traveling hydraulic continuously variable transmission mechanism (25) performs forward / reverse rotation and rotation speed control of the first hydraulic motor (24) by adjusting and changing the angle of the rotary swash plate of the first hydraulic pump (23). Thus, the rotational output of the first hydraulic motor (24) is transmitted from the transmission gear (42) of the output shaft (31) through the gears (43) (44) (45) and the auxiliary transmission mechanism (32) to the sun gear shaft ( The sun gear (36) is rotated by being transmitted to the center gear (46) fixed to 39). 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) (48), medium speed gears (51) (52), and high speed gears (53) (54) are provided between the shaft (47) and the sensor shaft (49). Switching between the low speed, the medium speed, and the high speed is made possible by the sliding operation of the gear (51) at the center position. The sensor shaft (49) is provided with a vehicle speed detection gear (55) and a vehicle speed sensor (56) for detecting the vehicle speed from the rotational speed of the gear (55). Note that the output shaft (31) is interlocked and connected to a PTO input gear (58) of a PTO shaft (57) that transmits rotational force to a work machine or the like via a PTO transmission gear mechanism (59).
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（６０）（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 driving force from the first hydraulic motor (24) transmitted to the sun gear shaft (39) via the center gear (46) is transmitted to the carrier shaft (40) via the left and right planetary gear mechanisms (35). The rotation transmitted to the carrier shaft (40) is transmitted to the left and right wheel shafts (34a) of the left and right drive wheels (34) via a pair of left and right reduction gears (60) and (61), respectively.
さらに、旋回用の油圧式無段変速機構（２８）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, the turning hydraulic continuously variable transmission mechanism (28) controls the forward and reverse rotation of the second hydraulic motor (27) and the rotational speed by adjusting the angle change of the rotary swash plate of the second hydraulic pump (26). The rotation output is transmitted from the output gear of the output shaft (62) of the second hydraulic motor (27) to the input gears (65a) and (65b) of the turning input shaft (64) via the gear transmission mechanism (63). The second hydraulic motor is transmitted directly to the external teeth of the ring gear (38) of the second ring motor and to the external teeth of the right ring gear (38) via the reverse gear (67) of the reverse rotation shaft (66). In the forward rotation of (27), the left and right ring gears (38) are configured to rotate the left gear (38) in the reverse direction and the right gear (38) in the normal direction at the same left and right rotational speed.
而して旋回用の第２油圧ポンプ（２６）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油圧ポンプ（２３）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油圧ポンプ（２３）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油圧ポンプ（２６）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。 Thus, when the driving of the first hydraulic pump (23) for driving is performed in a state where the driving of the second hydraulic pump (26) for turning is stopped and the left and right ring gears (38) are fixed stationary, the first hydraulic pressure is obtained. The rotational output from the motor (24) is transmitted from the center gear (46) to the left and right sun gears (36) at the same rotational speed, and the planetary gear (37), carrier (41) and reduction gear (60) of the left and right planetary gear mechanism (35). ) (61) is transmitted to the left and right wheel axles (34a) at the same rotational speed in the same direction of left and right, so that the airframe travels straight forward and backward. On the other hand, when the second hydraulic pump (26) for rotation is driven to rotate in the forward and reverse directions with the driving of the first hydraulic pump (23) for traveling stopped and the left and right sun gears (36) stationary and fixed, The planetary gear mechanism (35) is reverse or forward rotation, and the right planetary gear mechanism (35) is forward or reverse rotation, so that the left and right traveling crawler (2) is driven backward and forward, and the aircraft is left or right. Spin-turn on the spot.
また走行用の第１油圧ポンプ（２３）を駆動させながら、旋回用の第２油圧ポンプ（２６）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。 Further, when driving the first hydraulic pump (23) for driving and driving the second hydraulic pump (26) for turning to turn the body left and right, it is possible to turn with a large turning radius. The turning radius is determined according to the speed of the left and right traveling crawler (2).
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）（７３）に連動連結させている。 As shown in FIGS. 1 and 5 to 12, the main transmission lever (68) connected to the traveling hydraulic continuously variable transmission mechanism (25) and the turning hydraulic continuously variable transmission mechanism (28) are connected. The steering handle (19) to be linked is linked to the shift and turn interlocking mechanism (69) which is the interlocking means, and the interlocking mechanism (69) is traveled via the travel shift and steering link mechanisms (70) (71). In addition, the steering continuously variable transmission mechanisms (25) and (28) are linked to control levers (72) and (73).
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 end bent portion (68a) of the main transmission lever (68) on the cylindrical shaft (74) so as to be swingable in the left-right direction, and the main body side machine. A fixed mounting plate (78) fixed to a frame (76) and supporting the rotating plate (75) through a first pivot (77) in the left-right direction so as to be capable of pivoting back and forth, and the pivot (77). A speed change operation member (80) that is connected to a rotating plate (75) through a second pivot (79) in the front-rear direction orthogonal to the shaft (79) and is rotatable about the shaft (79), and the second pivot (79) ) And a steering operation member (81) that is pivotally connected around the axis of the gear, and the second pivot (79) of the speed change and steering operation members (80) and (81) is each operation output portion at an eccentric position. (80a) (81a) are interlockingly connected to the speed change and steering link mechanism (70) (71).
前記変速及び操向リンク機構（７０）（７１）は、連動機構（６９）後方位置で本機フレーム（７６）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（８０ａ）（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（８８）（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）（９１）と、前記運転キャビン（１８）の回動支点軸（９２）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）（９８）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（１０２）に回動自在に支持させる変速及び操向用筒軸（１０３）（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）（１０８）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）（１１２）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 shift and steering link mechanisms (70) (71) are supported on the frame (76) side of the machine mechanism (69) via the swinging cylinder shaft (83) outside the swinging shaft (82) at the rear position of the interlocking mechanism (69). A transmission arm (84), a steering arm (85) having a base end fixed to the swing shaft (82), and each operation output shaft (86) (87) of the output sections (80a) (81a) Universal joint shafts (88) and (89) for connecting the arms (84) and (85), and a shift and steering output arm (90) fixed to the right ends of the cylindrical shaft (83) and the swing shaft (82). ) (91) and a first swing arm (95) for shifting and steering provided rotatably on an intermediate shaft (94) attached to a fulcrum bearing (93) of the pivot fulcrum shaft (92) of the operating cabin (18). ) (96), and tips of the output arms (90) (91) and the first swing arms (95) (96) And a universal joint-type first rod (97) (98) for shifting and steering, and a shift and steering gear connected to the first swing arm (95) (96) provided on the intermediate shaft (94). Shifting and steering cylinder shaft (100) that is rotatably supported by a second pivot arm (99) (100) for direction and a support shaft (102) attached to the bearing plate (101) above the transmission case (22). 103) (104), and the distal ends of the first swing arm (105) (106) and the second swing arm (99) (100), the base end of which is fixed to the cylindrical shaft (103) (104). Universal joint-type second rods (107) (108) for shifting and steering, and second swing arms (109) (110) having base ends fixed to the cylindrical shafts (103) (104) And control levers (72) and (73) are connected to each tip. And a steering universal joint type third rod (111) (112), and a travel control member (80) is rotated by a travel operation member (80) about the first pivot (77). Further, the steering control member (81) is operated by the rotation of the steering operation member (81) around the second pivot (79) during traveling to perform the shift and steering control. ing.
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（１１６）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（１２０）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（１９）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 operating shaft (113) at the lower end of the steering handle (19), and the gear (114) is engaged with a sector gear (116) attached to the rear rotating shaft (115). A first swing arm (118) of a steering shaft (117) disposed below the position of the main transmission lever (68), and an output arm (119) having a base end fixed to the rotating shaft (115). A second swinging arm integrated with the first swinging arm (118) of the steering shaft (117) is connected between the respective ends via a universal joint type steering first rod (120) which is a steering link mechanism. (121) is connected to the front end of the universal joint shaft (89) via a universal joint type steering second rod (122), and the second pivot (79) is connected by rotating the handle (19). The steering operation member (81) is rotated as the center. It is configured so as.
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（１２６）の第１揺動アーム（１２７）と前記検出リンク（１２５）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（１３３）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。 Further, a neutral positioning plate (123) is provided below the gear (114) of the handle operating shaft (113), and one end of the steering detection link (125) is attached to the protruding shaft (124) on the lower surface of the positioning plate (123). And the first swing arm (127) of the reduction arm shaft (126) disposed on the right side of the rotation shaft (115) and the other end long hole (125a) of the detection link (125) are connected to the shaft ( 128), and a universal joint which is a speed reduction link mechanism between the tips of the speed reduction arm (129) of the steering shaft (117) and the second swing arm (130) of the speed reduction arm axis (126). The first speed reduction rod (131) is connected, and the rightmost speed reduction transmission shaft (132) of the speed change operation member (80) and the other end of the second swing arm (130) are connected with a universal joint type second speed reduction rod. Connect at (133) and run State is configured so as to decelerate the steering amount to pull the second reduction rod enough to a large (133) below the running speed of the handle (19).
ところで前記変速及び操向操作部材（８０）（８１）を軸回りに回動可能とさせる第２枢軸（７９）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（Ｌ１）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。 By the way, a universal joint portion (89a) of the second pivot (79) that allows the shift and steering operation members (80) (81) to rotate about the axis, and the steering arm (85) and the joint shaft (89). ) On the horizontal line (L1) in the front-rear direction, and universal joint portions (88b) (89b) between the operation output shafts (86) (87) and the universal joint shafts (88) (89), The first pivot (77) is positioned on the left and right horizontal line (L2) orthogonal to the line (L1), and the universal joint portion (88a) between the transmission arm (84) and the joint shaft (88) When the joint portion (89a) is positioned on the left and right horizontal line (L3) parallel to the line (L2), when either the main transmission lever (68) or the steering handle (19) is held neutral, Even if operated, each operation member (80) (81) is set to the first. Beauty by only rotate around the axis of the second pivot (77) (79), the joint axis (88) (89) are those which do not act an operating force.
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 an angle (α 1) (α 2) about the first pivot (77) by the forward / reverse operation of the main transmission lever (68), the joint shaft ( 88) is pulled or pushed to operate the shift arm (84) to switch the traveling speed between forward and backward, and as shown in FIG. 9, it is operated during this state (when the main shift lever (68) is other than neutral). When the operating member (81) is tilted up and down by an angle (β1) (β2) about the second pivot (79) by rotating the direction handle (19), the steering shaft (89) is pulled or pushed to operate the steering arm ( 85) is operated to turn the aircraft left and right. (Even when the turning operation is performed at the neutral position of the main speed, the joint shaft (89) also moves on the conical surface centered on the line (L1), and the distance between the joint portions (89a) and (89b) changes. do not do.)
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（α２）側に傾いているときには、継手部（８８ａ）（８８ｂ）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。 Further, as shown in FIG. 11, the detection link (125) provided on the steering handle (19) has the first swing arm (127) angled in the same direction (θ) in either the right or left turn operation from the neutral position. ), The second deceleration rod (133) is always pulled, and when the operation member (80) during forward operation is inclined to the angle (α1) side, the joint portions (88a) (88b) ), And when the operation member (80) during reverse operation is inclined to the angle (α2) side, the distance between the joint portions (88a) (88b) is increased to increase the speed change arm (84). Are respectively displaced toward the low speed side in the neutral direction, and the vehicle is decelerated in accordance with the turning amount.
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 center of the universal joints (97a) and (98a) of the first rods (97) and (98) and the swing arms (95) and (96) for transmitting the operating force for shifting and steering are arranged in the driving cabin (18 ) To coincide with the position of the pivot fulcrum shaft (92) so that the driving cabin (18) can be rotated in the forward direction without removing these operating systems in the neutral holding of shifting and steering. It is composed.
（１９） 操向ハンドル
（２５） 油圧変速機構
（２８） 油圧操向機構
（６８） 変速レバー
（６９） 連動機構（連動手段）
（８０）（８１） 操作部材
（１２５） 検出リンク
（１３１） 減速ロッド（減速リンク機構）
(19) Steering handle (25) Hydraulic transmission mechanism (28) Hydraulic steering mechanism (68) Shift lever (69) Interlocking mechanism (interlocking means)
(80) (81) Operation member (125) Detection link (131) Deceleration rod (deceleration link mechanism)
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004280467A JP3914225B2 (en) | 2004-09-27 | 2004-09-27 | Crawler work vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004280467A JP3914225B2 (en) | 2004-09-27 | 2004-09-27 | Crawler work vehicle |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34841799A Division JP3655516B2 (en) | 1996-06-25 | 1999-12-08 | Crawler work vehicle |
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| JP2005059852A JP2005059852A (en) | 2005-03-10 |
| JP3914225B2 true JP3914225B2 (en) | 2007-05-16 |
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| CN113212550A (en) * | 2021-05-07 | 2021-08-06 | 上海华兴数字科技有限公司 | Crawler work vehicle, method and device for controlling traveling of crawler work vehicle |
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