JP3426390B2 - Rice transplanter - Google Patents
Rice transplanterInfo
- Publication number
- JP3426390B2 JP3426390B2 JP05670195A JP5670195A JP3426390B2 JP 3426390 B2 JP3426390 B2 JP 3426390B2 JP 05670195 A JP05670195 A JP 05670195A JP 5670195 A JP5670195 A JP 5670195A JP 3426390 B2 JP3426390 B2 JP 3426390B2
- Authority
- JP
- Japan
- Prior art keywords
- case
- speed
- shaft
- returning
- transmission
- 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.)
- Expired - Fee Related
Links
Landscapes
- Transplanting Machines (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は苗載台及び植付爪を備え
て連続的に苗植作業を行う乗用式田植機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding type rice transplanter equipped with a seedling table and a planting claw for continuously carrying out seedling planting work.
【0002】[0002]
【従来の技術】作業速度の無段変速を行うこの種無段変
速機構として、固定プーリ及び可動プーリを備えるベル
ト無段変速機構があり、この変速機構の変速操作部と作
業者が操作を行う操作レバー間はリンク系などを用いて
連動連結されている。2. Description of the Related Art As such a continuously variable transmission mechanism for continuously changing the working speed, there is a belt continuously variable transmission mechanism having a fixed pulley and a movable pulley, which is operated by a gear shift operating portion and an operator. The operation levers are linked and linked by using a link system or the like.
【0003】[0003]
【発明が解決しようとする課題】しかし乍らこのような
リンク系の場合、リンク系が破損したり、1部が紛失す
るような事故が発生した場合、作業者からは無段変速機
構のコントロールが不可能となって極めて危険な状態と
なる。However, in the case of such a link system, when an accident occurs such that the link system is damaged or one part is lost, the operator controls the continuously variable transmission mechanism. Becomes impossible and becomes extremely dangerous.
【0004】[0004]
【課題を解決するための手段】然るに、本発明は、作業
速度を無段変速する無段変速機構を変速ケースに備える
と共に、前記変速ケースの変速軸に設ける操作板と無段
変速用の操作レバーを操作リンク系で連結させる田植機
において、前記操作リンク系の破損時または紛失時に無
段変速機構を高速から低速に戻す戻し機構を変速ケース
に一体的に設け、変速ケースの外側面で前記戻し機構を
操作板に連結させるもので、無段変速機構とこの操作レ
バー間のリンク系などが破損や紛失しても自動的に低速
側に戻して作業の安全性向上を図ると共に、無段変速機
構のメンテナンス時に戻し機構を取外す手間を省き、整
備性を向上させるものである。SUMMARY OF THE INVENTION Therefore, according to the present invention, the transmission case is provided with a continuously variable transmission mechanism for continuously changing the working speed.
Along with the operation plate provided on the speed change shaft of the speed change case,
Rice transplanter that connects the operating lever for shifting with an operating link system
In case of damage or loss of the operation link system,
A speed change case with a return mechanism that returns the speed change mechanism from high speed to low speed
And the return mechanism on the outer surface of the transmission case.
One which is connected to the operating plate, the improved safety of the continuously variable transmission mechanism and working link system between the operating lever and back to automatically lower speed be deleted damaged or powder, stepless eliminates the need to remove the back Shi mechanism at the time of maintenance of the mechanism, is intended to improve the maintainability.
【0005】また、高速から低速の全戻し操作範囲で略
同一の戻し力で動作させる戻し部材を低速戻し機構に用
いて、常に略同一の戻し力で高速から低速に略均一の作
業速度で戻して、作業の安全性を向上させると共に、作
業者の操作性を向上させるものである。Further, by using a returning member that operates with substantially the same returning force in the entire returning operation range from high speed to low speed in the low speed returning mechanism, the returning member is always returned from high speed to low speed with a substantially uniform working speed. As a result, the safety of the work is improved and the operability of the worker is improved.
【0006】[0006]
【0007】[0007]
【0008】[0008]
【実施例】以下、本発明の実施例を図面に基づいて詳述
する。図1は変速ケース部の正面説明図、図2は乗用田
植機の側面図、図3は同平面図を示し、図中(1)は作
業者が搭乗する走行車であり、エンジン(2)をセンタ
フレームである車体フレーム(3)に搭載させ、ミッシ
ョンケース(4)前方にフロントアクスルケース(5)
を介して水田走行用前輪(6)を支持させると共に、前
記ミッションケース(4)の後部にリヤアクスルケース
(7)を連設し、前記リヤアクスルケース(7)に水田
走行用後輪(8)を支持させる。そして前記エンジン
(2)等を覆うボンネット(9)両側に予備苗載台(1
0)を取付けると共に、足掛台(11)を介して作業者
が搭乗する車体カバー(12)によって前記ミッション
ケース(4)等を覆い、前記車体カバー(12)上部に
運転席(13)を取付け、その運転席(13)の前方で
前記ボンネット(9)後部に操向ハンドル(14)を設
ける。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a front explanatory view of a shift case portion, FIG. 2 is a side view of a passenger rice transplanter, and FIG. 3 is a plan view of the same, in which (1) is a traveling vehicle on which an operator rides, and an engine (2). Is mounted on the body frame (3) which is the center frame, and the front axle case (5) is placed in front of the mission case (4).
The front wheel (6) for traveling on paddy field is supported via the rear axle case (7) connected to the rear portion of the mission case (4), and the rear wheel (8) for traveling paddy field is mounted on the rear axle case (7). Support. On both sides of the bonnet (9) covering the engine (2), etc., a spare seedling stand (1
0) is mounted, the mission case (4) and the like are covered by a vehicle body cover (12) on which an operator rides via a footrest (11), and a driver's seat (13) is placed above the vehicle body cover (12). A steering handle (14) is provided at the rear of the hood (9) in front of the driver's seat (13).
【0009】また、図中(15)は6条植え用の苗載台
(16)並びに複数の植付爪(17)などを具備する植
付部であり、前高後低の合成樹脂製の前傾式苗載台(1
6)を下部レール(18)及びガイドレール(19)を
介して植付ケース(20)に左右往復摺動自在に支持さ
せると共に、一方向に等速回転させるロータリケース
(21)を前記植付ケース(20)に支持させ、該ケー
ス(21)の回転軸芯を中心に対称位置に一対の爪ケー
ス(22)(22)を配設し、その爪ケース(22)
(22)先端に植付爪(17)(17)を取付ける。ま
た前記植付ケース(20)の前側にローリング支点軸
(23)を介してヒッチブラケット(24)を設け、ト
ップリンク(25)及びロワーリンク(26)を含む昇
降リンク機構(27)を介して走行車(1)後側にヒッ
チブラケット(24)を連結させ、前記リンク機構(2
7)を介して植付部(15)を昇降させる昇降シリンダ
(28)をロワーリンク(26)に連結させ、前記前後
輪(6)(8)を走行駆動して移動すると同時に、左右
に往復摺動させる苗載台(16)から一株分の苗を植付
爪(17)によって取出し、連続的に苗植え作業を行う
ように構成する。Further, (15) in the figure is a planting section provided with a seedling table (16) for planting 6 rows and a plurality of planting claws (17), which are made of a synthetic resin having a high front and low front. Forward tilting seedling stand (1
6) is supported by the planting case (20) through the lower rail (18) and the guide rail (19) so as to be slidable left and right, and the rotary case (21) is rotated at a constant speed in one direction. The pair of claw cases (22) and (22) are supported at the case (20), and a pair of claw cases (22) and (22) are arranged symmetrically around the rotation axis of the case (21).
(22) Attach the planting claws (17) (17) to the tip. Further, a hitch bracket (24) is provided on the front side of the planting case (20) via a rolling fulcrum shaft (23), and a lift link mechanism (27) including a top link (25) and a lower link (26) is provided. A hitch bracket (24) is connected to the rear side of the traveling vehicle (1), and the link mechanism (2
A lifting cylinder (28) for lifting and lowering the planting part (15) through the lower part (7) is connected to the lower link (26) to drive and move the front and rear wheels (6) and (8), and at the same time reciprocate left and right. One seedling worth of seedlings is taken out from the sliding seedling placing table (16) by the planting claws (17), and the seedling planting operation is continuously performed.
【0010】また、図中(29)は主変速レバー、(3
0)は副変速レバーでもある植付操作レバー、(31)
は植付け感度調節レバー、(32)は主クラッチペダ
ル、(33)(33)は左右ブレーキペダル、(34)
は2条分均平用センターフロート、(35)は2条分均
平用サイドフロート、(36)は6条用の側条施肥機で
ある。Further, in the figure, (29) is a main transmission lever, (3
0) is a planted operation lever that is also a sub-shift lever, (31)
Is a planting sensitivity adjusting lever, (32) is a main clutch pedal, (33) and (33) are left and right brake pedals, and (34)
Is a center float for two-row leveling, (35) is a side float for two-row leveling, and (36) is a side-row fertilizer applicator for six rows.
【0011】さらに、図4乃至図8に示す如く、前低後
高(傾斜角約4度)に傾斜させる前記車体フレーム
(3)前部上面に架台(37)…を一体固定させ、架台
(37)…の前後方向が略水平な上面側に防振ゴム(3
8)…を介してエンジン台(39)を取付け、エンジン
台(39)に前記エンジン(2)を上載させ、前記エン
ジン(2)の左側に燃料タンク(40)を、またエンジ
ン(2)の右側にマフラー(41)を取付けると共に、
車体フレーム(3)前端側に前フレーム(42)を介し
てバッテリ(43)を取付けている。Further, as shown in FIGS. 4 to 8, the pedestal (37) is integrally fixed to the upper surface of the front portion of the body frame (3) to be tilted to the front low rear height (inclination angle of about 4 degrees), and the pedestal ( 37) ... The front and rear direction of the anti-vibration rubber (3
8) is attached to the engine base (39), the engine (2) is mounted on the engine base (39), the fuel tank (40) is mounted on the left side of the engine (2), and the engine (2) is mounted on the left side of the engine (2). While installing the muffler (41) on the right side,
A battery (43) is attached to the front end side of the vehicle body frame (3) via the front frame (42).
【0012】またさらに、前記車体フレーム(3)にケ
ース台(44)を一体固定させ、ケース台(44)にス
テアリングケース(45)を取付け、ハンドルコラムで
ある筒体(46)に内挿させる操向ハンドル(14)の
ステアリング軸(14a)を、左右車体フレーム(3)
(3)間の略中央でステアリングケース(45)上面に
立設させると共に、ステアリングケース(45)下面に
出力軸(47)を突設させ、左右の前輪(6)(6)を
方向転換させる操向アーム(48)を前記出力軸(4
7)に取付けている。Furthermore, a case base (44) is integrally fixed to the vehicle body frame (3), a steering case (45) is attached to the case base (44), and the steering case (45) is inserted into a tubular body (46) which is a handle column. Attach the steering shaft (14a) of the steering handle (14) to the left and right body frames (3).
The steering case (45) is erected on the upper surface of the steering case (45) substantially at the center between (3) and the output shaft (47) is projected on the lower surface of the steering case (45) to turn the left and right front wheels (6) and (6). The steering arm (48) is connected to the output shaft (4
It is attached to 7).
【0013】また、前記エンジン(2)下方のエンジン
台(39)下側に、前後方向に略水平な円筒形の軸受体
(49)を熔接固定させ、前記軸受体(49)にカウン
タ軸(50)を挿通支持させ、軸受体(49)前方に突
出させるカウンタ軸(50)前端にカウンタプーリ(5
1)を取付けると共に、エンジン(2)前側にオルタネ
ータ(52)を対面配置させるもので、左右車体フレー
ム(3)(3)間の略中央上方でエンジン(2)の前方
に出力軸(53)を突設させ、該出力軸(53)に出力
プーリ(54)を取付け、該出力プーリ(54)を前記
カウンタプーリ(51)にVベルト(55)(55)を
介して連結させると共に、オルタネータ(52)の入力
プーリ(56)にVベルト(57)を介して前記出力プ
ーリ(54)を連結させている。A cylindrical bearing body (49) which is substantially horizontal in the front-rear direction is welded and fixed to the lower side of the engine base (39) below the engine (2), and the counter shaft (49) is fixed to the bearing body (49). 50) is inserted and supported, and the counter pulley (5) is attached to the front end of the counter shaft (50) that projects forward from the bearing body (49).
1) is mounted and an alternator (52) is arranged in front of the engine (2) so as to face the output shaft (53) in front of the engine (2) substantially above the center between the left and right body frames (3) and (3). And the output pulley (54) is attached to the output shaft (53), the output pulley (54) is connected to the counter pulley (51) via the V belts (55) (55), and the alternator is also provided. The output pulley (54) is connected to the input pulley (56) of (52) via the V belt (57).
【0014】さらに、前記車体フレーム(3)後端部に
リヤアクスルケース(7)をボルト止め固定させ、前記
リヤアクスルケース(7)前面にミッションケース
(4)後面を連結固定させると共に、ミッションケース
(4)の右側前面にクラッチケース(58)を一体形成
し、クラッチケース(58)前面にミッションケースで
もある無段ベルト変速ケース(59)右側後面を嵌合固
定(インロー)させ、また昇降シリンダ(28)を作動
させる油圧ポンプ(60)をベルト変速ケース(59)
の左側後面に固定させるもので、四角パイプ形の左右車
体フレーム(3)(3)の間でこの上面よりも低位置に
前記各ケース(4)(58)(59)及び油圧ポンプ
(60)を吊下げ固定させ、ユニバーサルジョイント付
き伝動軸(61)を前記カウンタ軸(50)後端とベル
ト変速ケース(59)間に設け、エンジン(2)出力を
ベルト変速ケース(59)に伝えると共に、フロントア
クスルケース(5)とミッションケース(4)間に前輪
伝動軸(62)を設け、ミッションケース(4)の変速
出力を各アクスルケース(5)(7)を介して前後輪
(6)(8)に伝えるように構成している。Further, a rear axle case (7) is fixed to the rear end portion of the vehicle body frame (3) by bolts, and the rear surface of the mission case (4) is connected and fixed to the front surface of the rear axle case (7). ) Is integrally formed with a clutch case (58) on the right front side, and the right side rear surface of the continuously variable belt transmission case (59) which is also a transmission case is fitted and fixed (inlay) on the front side of the clutch case (58), and the lifting cylinder (28 ) Actuates the hydraulic pump (60) to the belt shifting case (59)
Is fixed to the left rear surface of the case, and is located at a position lower than the upper surface between the square pipe-shaped left and right body frames (3) and (3), and the cases (4) (58) (59) and the hydraulic pump (60). And a transmission shaft (61) with a universal joint is provided between the rear end of the counter shaft (50) and the belt transmission case (59) to transmit the output of the engine (2) to the belt transmission case (59). A front wheel transmission shaft (62) is provided between the front axle case (5) and the mission case (4), and the shift output of the mission case (4) is transmitted through the axle cases (5) and (7) to the front and rear wheels (6) ( It is configured to tell 8).
【0015】またさらに、前記車体フレーム(3)後端
にロワーリンク支点軸(63)を設け、該支点軸(6
3)に前記ロワーリンク(26)前端を取付けると共
に、左右の車体フレーム(3)(3)後端間に門形支柱
(64)を立設させ、該支柱(64)上端に施肥機台
(65)を設け、該台(65)にトップリンク支点軸
(66)を介してトップリンク(25)前端を取付けて
いる。Furthermore, a lower link fulcrum shaft (63) is provided at the rear end of the body frame (3), and the fulcrum shaft (6
The front end of the lower link (26) is attached to 3), and the gate-shaped support pillar (64) is erected between the rear ends of the left and right body frames (3) and (3), and the fertilizer applicator base (64) is installed at the upper end of the support pillar (64). 65) is provided, and the front end of the top link (25) is attached to the base (65) via the top link fulcrum shaft (66).
【0016】また、前記ブレーキペダル(33)を設け
るペダル支点パイプ(67)を備え、左右の車体フレー
ム(3)(3)に前記パイプ(67)を貫挿させ、前記
パイプ(67)両端部を車体フレーム(3)に溶接固定
させ、左右車体フレーム(3)(3)の連結部材として
前記パイプ(67)を取付けると共に、前記昇降シリン
ダ(28)を取付ける左右サブフレーム(68)(6
8)を備え、前低後高に斜設させるサブフレーム(6
8)前端を前記ペダル支点パイプ(67)に溶接固定さ
せ、前記サブフレーム(68)後端を支柱(64)上端
に溶接固定させている。Further, a pedal fulcrum pipe (67) provided with the brake pedal (33) is provided, and the pipe (67) is inserted into the left and right vehicle body frames (3) (3), and both ends of the pipe (67) are provided. Are welded and fixed to the vehicle body frame (3), the pipe (67) is attached as a connecting member of the left and right vehicle body frames (3) and (3), and the left and right subframes (68) (6) to which the lifting cylinder (28) is attached.
8), and a sub-frame (6
8) The front end is welded and fixed to the pedal fulcrum pipe (67), and the rear end of the subframe (68) is welded and fixed to the upper end of the column (64).
【0017】図9乃至図11に示す如く、巻付け径を変
化させて変速比を無段階に変更する入出力プーリ(6
9)(70)及び変速ベルト(71)をベルト変速ケー
ス(59)に内設させ、ユニバーサルジョイント付き伝
動軸(61)を介してベルト変速ケース(59)の入力
軸(72)前端を前記カウンタ軸(50)後端に連結さ
せ、入力軸(72)後端に油圧ポンプ(60)を直接連
結させると共に、クラッチペダル(32)によって断続
操作する多板摩擦形乾式クラッチ(73)をクラッチケ
ース(58)に内設させ、ベルト変速ケース(59)の
出力軸(74)をミッションケース(4)の入力軸(7
5)に前記クラッチ(73)を介して連結させている。As shown in FIGS. 9 to 11, the input / output pulley (6) for continuously changing the gear ratio by changing the winding diameter.
9) (70) and the speed change belt (71) are installed in the belt speed change case (59), and the front end of the input shaft (72) of the belt speed change case (59) is connected to the counter via the universal joint transmission shaft (61). The multi-disc friction type dry clutch (73) is connected to the rear end of the shaft (50), the hydraulic pump (60) is directly connected to the rear end of the input shaft (72), and the clutch plate includes a multi-plate friction dry clutch (73). The output shaft (74) of the belt transmission case (59) is installed inside the (58) and the input shaft (7) of the transmission case (4) is installed.
5) is connected via the clutch (73).
【0018】また、テンションローラ(76)と、入出
力プーリ(69)(70)のベルト巻付け径を変化させ
る入出力用カム(77)(78)と、各カム(77)
(78)に当接させる入出力用ローラ(79)(80)
とを備えると共に、前記ベルト変速ケース(59)に変
速軸(81)を介して変速アーム(82)を設ける。Further, the tension roller (76), the input / output cams (77) and (78) for changing the belt winding diameter of the input and output pulleys (69) and (70), and each cam (77).
Input / output rollers (79) (80) to be brought into contact with (78)
And a gear shift arm (82) is provided in the belt gear shift case (59) via a gear shift shaft (81).
【0019】さらに、前記出力軸(74)にテンション
アーム(83)中間を回転自在に取付け、該アーム(8
3)の一端側に軸(84)を介してテンションローラ
(76)を回転自在に設けると共に、前記アーム(8
3)の他端にテンションバネ(85)の一端側を連結さ
せる。また、前記ベルト変速ケース(59)に受軸(8
6)中間を回転自在に軸支させ、前記ケース(59)内
部に突出させる受軸(86)の一端側に受アーム(8
7)基端を一体固定させ、受アーム(87)先端に前記
テンションバネ(85)端部を係止させ、テンションア
ーム(83)と受アーム(87)間にテンションバネ
(85)を連結させる。図12にも示す如く、前記ケー
ス(59)外部に突出させる受軸(86)の他端側にロ
ックアーム(88)基端を固定させると共に、前記ロッ
クアーム(88)先端を前記ケース(59)外面にボル
ト(89)止め固定させ、前記ボルト(89)によって
各アーム(87)(88)をケース(59)に一体的に
固定させ、テンションバネ(85)を緊張状態に支持さ
せ、テンションローラ(76)を変速ベルト(71)に
圧接させて変速ベルト(71)のテンションを所定以上
に保つように構成している。Further, the middle of the tension arm (83) is rotatably attached to the output shaft (74), and the arm (8)
3) A tension roller (76) is rotatably provided on one end side of the arm (8) via a shaft (84), and the arm (8
The other end of 3) is connected to one end of the tension spring (85). Further, the belt shift case (59) has a bearing shaft (8).
6) The receiving arm (8) is attached to one end side of the receiving shaft (86) that rotatably supports the middle portion and projects into the case (59).
7) The base end is integrally fixed, the end of the tension spring (85) is locked to the tip of the receiving arm (87), and the tension spring (85) is connected between the tension arm (83) and the receiving arm (87). . As shown in FIG. 12, the base end of the lock arm (88) is fixed to the other end of the receiving shaft (86) that projects outside the case (59), and the tip end of the lock arm (88) is fixed to the case (59). ) A bolt (89) is fixed to the outer surface, and the arms (87) and (88) are integrally fixed to the case (59) by the bolt (89), and the tension spring (85) is supported in a tensioned state. The roller (76) is brought into pressure contact with the speed change belt (71) to maintain the tension of the speed change belt (71) at a predetermined level or more.
【0020】またさらに、前記ベルト変速ケース(5
9)を2つ割り構造の前後ケース本体(59a)(59
b)によって形成すると共に、ベアリング形の前記ロー
ラ(79)(80)を支軸(90)…中間に回転自在に
設け、前後ケース本体(59a)(59b)の接離(合
体分離)方向に開放させた軸受凹部(91)…を前記ケ
ース(59)内面に形成し、軸受凹部名(91)に支軸
(90)の一端側を嵌入させ、支軸(90)の他端側を
前記ケース(59)内面にボルト(92)止め固定さ
せ、前記ケース(59)内面に支軸(90)…を介して
各ローラ(79)(80)を着脱自在に取付けるもの
で、前記無段ベルト変速ケース(59)の分解方向に開
放させた軸受凹部(91)と1本のボルト(92)によ
って前記支軸(90)を無段ベルト変速ケース(59)
に着脱自在に固定させることにより、アルミニュウムダ
イキャスト加工などによって無段ベルト変速ケース(5
9)及び軸受凹部(91)を容易に形成できると共に、
軸受凹部(91)への支軸(90)の嵌込み並びに支軸
(90)へのボルト(92)締付け等の作業を容易に行
えるように構成している。Furthermore, the belt shift case (5
9) Front and rear case bodies (59a) (59)
The roller (79) (80) in the form of a bearing is rotatably provided in the middle of the support shaft (90) ... in the middle so that the front and rear case bodies (59a) (59b) can be moved toward and away from each other (combined separation). The opened bearing recesses (91) are formed on the inner surface of the case (59), one end side of the support shaft (90) is fitted into the bearing recess name (91), and the other end side of the support shaft (90) is located above. The stepless belt is configured such that the rollers (79) (80) are detachably attached to the inner surface of the case (59) by bolts (92) and fixed to the inner surface of the case (59) through the support shafts (90). The support shaft (90) is attached to the continuously variable belt transmission case (59) by a bearing recess (91) and one bolt (92) opened in the disassembly direction of the transmission case (59).
It can be detachably fixed to the stepless belt speed change case (5
9) and the bearing recess (91) can be easily formed, and
The support shaft (90) is fitted into the bearing recess (91) and the bolts (92) are tightened to the support shaft (90).
【0021】そして、リンク(93)及びロッド(9
4)及び連杆(95)を介して前記変速軸(81)に各
入出力用カム(77)(78)を連結させると共に、前
記変速アーム(82)に植付操作レバー(30)を連結
させ、該レバー(30)操作により入出力軸(72)
(74)回りに入出力用カム(77)(78)を回転さ
せ、入出力用プーリ(69)(70)幅を変えて変速ベ
ルト(71)の巻付け径を変化させ、前記プーリ(6
9)(70)及び変速ベルト(71)の変速比を無段階
に変更するように構成している。The link (93) and the rod (9)
4) and the input / output cams (77) (78) are connected to the speed change shaft (81) via the connecting rod (95) and the planting operation lever (30) is connected to the speed change arm (82). And the input / output shaft (72) is operated by operating the lever (30).
The input / output cams (77) (78) are rotated around (74) to change the width of the input / output pulleys (69) (70) to change the winding diameter of the speed change belt (71).
9) The gear ratios of (70) and the speed change belt (71) are continuously changed.
【0022】図13乃至図14に示す如く、前記植付操
作レバー(30)は、植付部(15)の昇降と、植付ク
ラッチ(図示せず)の入切と、植付走行速度の変速の3
通りの操作を行うもので、前記操作レバー(30)をレ
バー軸(95)に取付け、植付昇降バルブ(97)を切
換える昇降操作アーム(98)を前記レバー軸(96)
に一体固定させると共に、前記変速ケース(59)内の
ベルト無段変速機構を切換えて変速を行う連係軸(9
9)を設け、一対のセクタギヤ(100)(101)を
介し前記レバー軸(96)と連係軸(99)を連動連結
させている。As shown in FIGS. 13 to 14, the planting operation lever (30) moves the planting part (15) up and down, the planting clutch (not shown) is turned on and off, and the planting traveling speed is changed. Shifting 3
The operation lever (30) is attached to the lever shaft (95), and the raising / lowering operation arm (98) for switching the planted raising / lowering valve (97) is attached to the lever shaft (96).
And a fixed shaft (9) for performing gear shifting by switching the belt continuously variable transmission mechanism in the gear shifting case (59).
9) is provided, and the lever shaft (96) and the linkage shaft (99) are interlockingly connected through a pair of sector gears (100) (101).
【0023】また、前記連係軸(99)にはレバー変速
操作板(102)を固設すると共に、連係軸(99)を
中心とした対称位置に一対の融通長孔を有する融通板
(103)を連係軸(99)に遊転支持し、操作板(1
02)のピンを融通長孔に係合させ、前記レバー(3
0)を「低速」から「高速」側に移動操作するとき、前
記ピンとの係合によって融通板(103)を回動させ、
該融通板(103)の一端側に変速ロッド(104)を
介し連結する変速ケース(59)の変速操作軸を変速動
作させて、植付走行速度を低速から高速側に切換えるよ
うに構成している。Further, a lever shift operating plate (102) is fixed to the link shaft (99), and a plate (103) having a pair of long slots is formed symmetrically with respect to the link shaft (99). Of the operation plate (1)
No. 02) is engaged with the accommodation slot, and the lever (3
0) from the "low speed" to the "high speed" side, the accommodation plate (103) is rotated by engagement with the pin,
The transmission operation shaft of a transmission case (59) connected to one end of the accommodation plate (103) through a transmission rod (104) is operated to change the planting traveling speed from a low speed to a high speed. There is.
【0024】さらに、前記融通板(103)の他端側に
ワイヤ(105)を介し増速ペダル(106)を連動連
結させ、前記増速ペダル(106)を踏込んで「入」操
作として融通板(103)を高速側に回動させるとき、
前記長孔によってレバー(30)位置にかかわらず融通
板(103)のみを回動させ、植付走行速度を低速から
高速側に切換えるように構成している。また、前記レバ
ー(30)を復帰させるガススプリング(107)を前
記レバー軸(96)にアーム(108)を介して連結さ
せると共に、変速ケース(59)の変速位置を検出させ
るポテンショメータ型変速位置センサ(109)を設
け、該センサ(109)にセンサアーム(110)を介
して連係軸(99)を連結させている。Further, a speed increasing pedal (106) is interlockingly connected to the other end side of the flexible plate (103) via a wire (105), and the speed increasing pedal (106) is stepped on to perform an "ON" operation. When rotating (103) to the high speed side,
Only the accommodation plate (103) is rotated by the elongated hole regardless of the position of the lever (30) to switch the planting traveling speed from the low speed side to the high speed side. A gas spring (107) for returning the lever (30) is connected to the lever shaft (96) via an arm (108), and a potentiometer-type shift position sensor for detecting a shift position of a shift case (59). (109) is provided, and the link shaft (99) is connected to the sensor (109) via the sensor arm (110).
【0025】また、図14にも示す如く、前記連係軸
(99)に一方向クラッチ(111)を介してブレーキ
板(112)を設け、該ブレーキ板(112)にバネ
(113)を介してブレーキシュー(114)を常に圧
着させ、ブレーキ板(112)ブレーキ力によってガス
スプリング(107)に抗してレバー(30)を操作位
置に支持させると共に、前記レバー(30)を低速から
高速に切換時、一方向クラッチ(111)の空転によっ
てブレーキ板(112)ブレーキ力が作用することなく
レバー(30)を高速側に移動させることができるよう
に構成している。また、前記主クラッチペダル(32)
に連結させる解除レバー(115)をブレーキシュー
(114)に連結させ、主クラッチペダル(32)操作
によって主クラッチを切とするとき、ブレーキシュー
(114)をバネ(113)に抗して離してブレーキ動
作を解除させて、この副変速を「高速」から「低速」に
戻すように構成している。Further, as shown in FIG. 14, a brake plate (112) is provided on the linkage shaft (99) via a one-way clutch (111), and the brake plate (112) is connected via a spring (113). The brake shoe (114) is constantly crimped, the lever (30) is supported in the operating position against the gas spring (107) by the braking force of the brake plate (112), and the lever (30) is switched from low speed to high speed. At this time, the lever (30) can be moved to the high speed side without the braking force of the brake plate (112) acting due to the idling of the one-way clutch (111). Also, the main clutch pedal (32)
When the main clutch is disengaged by operating the main clutch pedal (32) by connecting the release lever (115) to the brake shoe (114), the brake shoe (114) is released against the spring (113). The brake operation is released to return the sub-shift from "high speed" to "low speed".
【0026】一方、図1及び図12に示す如く、前記変
速アーム(82)は、入出力プーリ(69)(70)及
び変速ベルト(71)で構成する無段変速機構(11
5)を前記レバー(30)系とは別途に「高速」から
「低速」に戻す低速戻り機構(116)を備えるもの
で、変速ケース(59)の前側で変速軸(81)に遊転
状に取付けるアーム操作板(117)と、変速ケース
(59)の前面に固設する取付ステー(118)との間
に低速復帰用の戻し部材であるガススプリング(11
9)を介設させ、前記変速軸(81)に固定取付けする
変速アーム(82)と操作板(117)とを、ピン(1
20a)及び長孔(120b)を介して高速側に融通自
在に、且つバネ(121)を介して操作板(117)に
アーム(82)を追従可能に連結させると共に、変速ア
ーム(82)が低速及び高速位置まで移動したときには
これに当接させてその位置規制を行う低速及び高速用ス
トッパ(122)(123)を変速ケース(59)の前
面に固定させている。そして前記操作板(117)とレ
バー(30)とを連結する操作系に破損や一部紛失など
の事故が発生した場合、この操作系に関係なく前記ガス
スプリング(119)の復帰力によって無段変速機構
(115)を高速側から低速に戻すように構成したもの
である。On the other hand, as shown in FIGS. 1 and 12, the speed change arm (82) includes a continuously variable speed change mechanism (11) composed of input / output pulleys (69) (70) and a speed change belt (71).
5) is provided with a low speed return mechanism (116) for returning from "high speed" to "low speed" separately from the lever (30) system, and it is free to rotate on the speed change shaft (81) in front of the speed change case (59). A gas spring (11) serving as a return member for returning to a low speed is provided between an arm operation plate (117) attached to the vehicle and a mounting stay (118) fixed to the front surface of the transmission case (59).
9), and the operation plate (117) and the speed change arm (82) fixedly attached to the speed change shaft (81) are connected to the pin (1).
20a) and the long hole (120b) so as to be interchangeable to the high speed side, and the arm (82) is connected to the operating plate (117) via the spring (121) so as to follow the transmission arm (82). Low-speed and high-speed stoppers (122) (123), which are brought into contact with the low-speed and high-speed positions to regulate their positions, are fixed to the front surface of the transmission case (59). When an accident such as damage or partial loss occurs in the operation system that connects the operation plate (117) and the lever (30), the restoring force of the gas spring (119) causes a continuous step regardless of the operation system. The speed change mechanism (115) is configured to return from the high speed side to the low speed side.
【0027】ところで、前記変速ケース(59)の後ケ
ース(59b)左右両側上部にはウインチ・クレーンな
ど吊り上げ装置の吊り上げ部となる吊り上げ用のワイヤ
(124)などを掛止させるワイヤ取付孔(125)を
有する取付ボス(126)を一体形成して、クレーンな
どによって変速ケース(59)を上方に吊り上げ可能に
設けると共に、後ケース(59b)の左右両側に取付ボ
ルト孔(127)を有する本機取付ボス(128)を一
体形成して、車体フレーム(3)の固定取付板(12
9)に変速ケース(59)の両側を固定支持するように
構成している。By the way, a wire mounting hole (125) for hooking a lifting wire (124), which serves as a lifting portion of a lifting device such as a winch / crane, is provided on the upper left and right sides of the rear case (59b) of the transmission case (59). A mounting case having a mounting boss (126) integrally formed with the rear case (59b) and a rear case (59b) having mounting bolt holes (127). The mounting boss (128) is integrally formed to fix the fixed mounting plate (12) of the vehicle body frame (3).
9), the both sides of the transmission case (59) are fixedly supported.
【0028】また図8に示す如く、前記油圧ポンプ(6
0)は油圧タンク兼用のリヤアクスルケース(7)にホ
ース(130)を介し連通接続させて、昇降シリンダ
(28)に油圧を送給するもので、ホース(130)の
固定部材(131)を前輪伝動軸(62)の下側でミッ
ションケース(4)の前面に取付固定して、固定部材
(131)によってホース(130)の伝動軸(62)
との干渉を防止すると共に、変速ケース(59)の取外
しの際ホース(130)を介しポンプ(60)をミッシ
ョンケース(4)側に残す状態とさせて変速ケース(5
9)単独の取外しを可能とさせるように構成したもので
ある。Further, as shown in FIG. 8, the hydraulic pump (6
Reference numeral 0) is for communicating with a rear axle case (7) also serving as a hydraulic tank via a hose (130) to feed hydraulic pressure to a lifting cylinder (28). The fixing member (131) of the hose (130) is attached to the front wheel. The transmission shaft (62) of the hose (130) is attached and fixed to the front surface of the mission case (4) below the transmission shaft (62) by a fixing member (131).
The transmission case (5) is prevented from interfering with the transmission case (59) and the pump (60) is left on the transmission case (4) side via the hose (130) when the transmission case (59) is removed.
9) It is configured so that it can be independently removed.
【0029】本実施例は上記の如く構成するものにし
て、前記変速ケース(59)に低速戻し機構(116)
を設けることによって、操作レバー(30)と変速軸
(81)間のレバー操作系に、破損や紛失などの事故が
発生して、主クラッチペダル(32)の切操作によって
無段変速機構(115)が高速側から低速側に戻らない
ような場合でも、戻し機構(116)のガススプリング
(119)の戻し作用によって無段変速機構(115)
を高速側から低速側に戻すことを可能として、その安全
性を向上させるものである。また戻し機構(116)を
変速ケース(59)の前面に一体取付けすることによっ
て、保守点検などで変速ケース(59)を取外しする場
合でも、その都度戻し機構(116)を取外す必要もな
く整備性の向上が図れ、またガススプリング(119)
を用いることによってこの全動作範囲で略均一の戻し力
を変速軸(81)に作用させて、高速側から低速に変動
のないスムーズな減速動作が行われる。This embodiment is constructed as described above, and the low-speed return mechanism (116) is attached to the speed change case (59).
Due to the provision of the switch, an accident such as damage or loss occurs in the lever operation system between the operation lever (30) and the speed change shaft (81), and the continuously variable transmission mechanism (115) is operated by disengaging the main clutch pedal (32). ) Does not return from the high speed side to the low speed side, the continuously variable transmission mechanism (115) is returned by the returning action of the gas spring (119) of the returning mechanism (116).
It is possible to return from the high speed side to the low speed side to improve the safety. Further, by integrally mounting the return mechanism (116) on the front surface of the speed change case (59), even when the speed change case (59) is removed for maintenance or inspection, it is not necessary to remove the return mechanism (116) each time. The gas spring (119)
By applying a substantially uniform return force to the speed change shaft (81) in this entire operation range, a smooth deceleration operation without fluctuation from the high speed side to the low speed side is performed.
【0030】また、変速ケース(59)は吊り上げ用ボ
ス(126)によってクレーンなどによる吊り上げを可
能とさせて、インロー嵌合するクラッチケース(58)
との脱着を容易とさせるばかりでなく、変速ケース(5
9)を取外すことによって、ミッションケース(4)の
前側に連設するクラッチケース(58)の前面側も開放
状態となって、変速ケース(59)を地上まで降ろすこ
となく変速ケース(59)を吊り上げた状態のままでの
クラッチ(73)の保守点検を容易に可能とさせること
ができる。Further, the transmission case (59) can be lifted by a crane or the like by means of the lifting boss (126), and the clutch case (58) is fitted in the spigot.
Not only makes it easy to attach and detach with the gearbox (5
By removing 9), the front side of the clutch case (58) connected to the front side of the mission case (4) is also opened, and the shift case (59) is not lifted to the ground. It is possible to easily enable maintenance and inspection of the clutch (73) in the lifted state.
【0031】[0031]
【発明の効果】以上実施例から明らかなように本発明
は、作業速度を無段変速する無段変速機構(115)を
変速ケース(59)に備えると共に、前記変速ケース
(59)の変速軸(81)に設ける操作板(117)と
無段変速用の操作レバー(30)を操作リンク系で連結
させる田植機において、前記操作リンク系の破損時また
は紛失時に無段変速機構(115)を高速から低速に戻
す戻し機構(116)を変速ケース(59)に一体的に
設け、変速ケース(59)の外側面で前記戻し機構(1
16)を操作板(117)に連結させるもので、無段変
速機構(115)とこの操作レバー(30)間のリンク
系などが破損や紛失しても自動的に低速側に戻して作業
の安全性向上を図ることができると共に、無段変速機構
(115)のメンテナンス時に戻し機構(116)を取
外す手間を省き、整備性を向上させることができるもの
である。As is clear from the above embodiments, the present invention provides a continuously variable transmission mechanism (115) for continuously changing the working speed.
The shift case (59) is provided with the shift case
An operation plate (117) provided on the transmission shaft (81) of (59);
Connecting the operation lever (30) for continuously variable transmission with the operation link system
In the rice transplanter, when the operation link system is damaged,
Will return the continuously variable transmission (115) from high speed to low speed when lost
The return mechanism (116) is integrated with the transmission case (59).
The return mechanism (1) is provided on the outer surface of the transmission case (59).
16) intended to be linked to the operation plate (117), continuously variable transmission mechanism (115) Toko of the operation lever (30) between the link system such as is returned automatically be deleted damaged or powder to the low speed side work Work
It is possible to contrive to enhance the safety of, eliminates the need to remove the skip back during maintenance of the continuously variable transmission mechanism (115) mechanism (116), in which it is possible to improve the maintainability.
【0032】また、高速から低速の全戻し操作範囲で略
同一の戻し力で動作させる戻し部材(119)を低速戻
し機構(116)に用いたものであるから、常に略同一
の戻し力で高速から低速に略同一に作業速度を戻して、
作業の安全性を向上させることができると共に、作業者
の操作性を向上させることができるものである。Further, since the returning member (119) for operating with substantially the same returning force in the entire returning operation range from high speed to low speed is used for the low speed returning mechanism (116), the returning member (119) is always provided with substantially the same returning force and high speed. To about the same speed as the low speed,
The work safety can be improved and the operability of the worker can be improved.
【0033】[0033]
【0034】[0034]
【図1】変速ケース部の正面説明図である。FIG. 1 is a front explanatory view of a shift case portion.
【図2】乗用田植機の全体側面図である。FIG. 2 is an overall side view of a riding rice transplanter.
【図3】乗用田植機の全体平面図である。FIG. 3 is an overall plan view of a riding rice transplanter.
【図4】走行車の側面図である。FIG. 4 is a side view of the traveling vehicle.
【図5】走行車の平面図である。FIG. 5 is a plan view of the traveling vehicle.
【図6】エンジン部の正面説明図である。FIG. 6 is a front explanatory view of an engine section.
【図7】エンジン部の側面説明図である。FIG. 7 is a side view of the engine section.
【図8】変速ケース部の側面説明図である。FIG. 8 is a side view illustrating a transmission case portion.
【図9】変速ケース部の平面説明図である。FIG. 9 is an explanatory plan view of a shift case portion.
【図10】変速ケース部の断面説明図である。FIG. 10 is an explanatory cross-sectional view of a shift case portion.
【図11】変速ケース部の背面説明図である。FIG. 11 is a rear view of the transmission case portion.
【図12】変速ケース部の側面説明図である。FIG. 12 is a side view of a transmission case portion.
【図13】操作レバー系の説明図である。FIG. 13 is an explanatory diagram of an operating lever system.
【図14】操作レバー系の説明図である。FIG. 14 is an explanatory diagram of an operation lever system.
(59) 変速ケース (73) クラッチ (115) 無段変速機構 (116) 低速戻し機構 (119) ガススプリング(戻し部材) (124) ワイヤ(吊り上げ部) (126) 取付ボス (59) Shift case (73) Clutch (115) Continuously variable transmission (116) Low speed return mechanism (119) Gas spring (return member) (124) Wire (lifting part) (126) Mounting boss
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) A01C 11/02 ─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) A01C 11/02
Claims (2)
(115)を変速ケース(59)に備えると共に、前記
変速ケース(59)の変速軸(81)に設ける操作板
(117)と無段変速用の操作レバー(30)を操作リ
ンク系で連結させる田植機において、前記操作リンク系
の破損時または紛失時に無段変速機構(115)を高速
から低速に戻す戻し機構(116)を変速ケース(5
9)に一体的に設け、変速ケース(59)の外側面で前
記戻し機構(116)を操作板(117)に連結させる
ことを特徴とする田植機。1. A continuously variable transmission mechanism (115) for continuously changing work speed is provided in a transmission case (59), and
Operation plate provided on the shift shaft (81) of the shift case (59)
Operate (117) and the operation lever (30) for continuously variable transmission.
In the rice transplanter to be connected by the link system, the operation link system
High-speed continuously variable transmission (115) in case of damage or loss
The return mechanism (116) for returning from the low speed to the low speed case (5
9) integrated with the outside of the transmission case (59) and front
A rice transplanter characterized in that the write- back mechanism (116) is connected to the operation plate (117) .
の戻し力で動作させる戻し部材(119)を低速戻し機
構(116)に用いたことを特徴とする請求項1記載の
田植機。2. The rice transplanter according to claim 1, wherein a returning member (119) which operates with substantially the same returning force in the entire returning operation range from high speed to low speed is used for the low speed returning mechanism (116).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP05670195A JP3426390B2 (en) | 1995-02-20 | 1995-02-20 | Rice transplanter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP05670195A JP3426390B2 (en) | 1995-02-20 | 1995-02-20 | Rice transplanter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08224019A JPH08224019A (en) | 1996-09-03 |
JP3426390B2 true JP3426390B2 (en) | 2003-07-14 |
Family
ID=13034780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP05670195A Expired - Fee Related JP3426390B2 (en) | 1995-02-20 | 1995-02-20 | Rice transplanter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3426390B2 (en) |
-
1995
- 1995-02-20 JP JP05670195A patent/JP3426390B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH08224019A (en) | 1996-09-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |