JP2547417Y2 - Traveling equipment for agricultural work machines - Google Patents
Traveling equipment for agricultural work machinesInfo
- Publication number
- JP2547417Y2 JP2547417Y2 JP1990128234U JP12823490U JP2547417Y2 JP 2547417 Y2 JP2547417 Y2 JP 2547417Y2 JP 1990128234 U JP1990128234 U JP 1990128234U JP 12823490 U JP12823490 U JP 12823490U JP 2547417 Y2 JP2547417 Y2 JP 2547417Y2
- Authority
- JP
- Japan
- Prior art keywords
- rear axle
- case
- chassis frame
- wheel
- frame
- 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 - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims description 29
- 230000008859 change Effects 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 241001494496 Leersia Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Motor Power Transmission Devices (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
- Harvester Elements (AREA)
- Arrangement Of Transmissions (AREA)
Description
【考案の詳細な説明】 「産業上の利用分野」 本考案は乗用型芝刈機など農作業機の走行装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a traveling device of an agricultural work machine such as a riding lawn mower.
「従来の技術」 従来、実開昭61−16926号公報、または実開昭63−828
96号公報に示す如く、ミッションケース両側に左右リヤ
アクスルケースを設けて左右後輪を装設させる技術があ
る。Conventional technology Conventionally, Japanese Utility Model Application Laid-Open No. 61-16926 or Japanese Utility Model Application Laid-Open No. 63-828
As disclosed in JP-A-96, there is a technique in which left and right rear axle cases are provided on both sides of a transmission case to mount left and right rear wheels.
「考案が解決しようとする課題」 前記従来技術は、リヤアクスルケースを操向支点軸に
より方向転換自在に設ける場合、リヤアクスルケース支
持構造または後輪の車軸駆動構造が複雑になり易いと共
に、後輪前方に作業部を設ける車台フレームと前記リヤ
アクスルケースとミッションケースの連結強度の向上並
びに軽量化などを容易に図り得ない等の問題がある。[Problem to be Solved by the Invention] In the prior art, when the rear axle case is provided so as to be able to change its direction by a steering fulcrum shaft, the rear axle case support structure or the rear wheel axle drive structure tends to be complicated, and the rear wheel front There is a problem that it is not easy to improve the connection strength between the chassis frame and the rear axle case and the transmission case, and to reduce the weight, etc.
「課題を解決するための手段」 然るに、本考案は、エンジン及び前輪を車台フレーム
前部に設け、運転席及び後輪を車台フレーム後部に設け
ると共に、前後輪間の車台フレーム下面側に作業部を装
設させる農作業機の走行装置において、車台フレーム後
側下部にリヤアクスルブラケットを固定させ、左右リヤ
アクスルブラケット間にミッションケースを固定させる
と共に、後輪を軸支させる車軸をリヤアクスルケースに
設け、該リヤアクスルケースを前記リヤアクスルブラケ
ットに操向支点軸を介して方向転換自在に連結させ、前
記車軸と略同一軸芯上に設けるミッションケースの上面
側に車台フレームを固設させたことを特徴とする。Means for Solving the Problems In this invention, the engine and the front wheels are provided at the front of the chassis frame, the driver's seat and the rear wheels are provided at the rear of the chassis frame, and the working unit is provided on the underside of the chassis frame between the front and rear wheels. A rear axle bracket is fixed to a lower rear portion of a chassis frame, a transmission case is fixed between the left and right rear axle brackets, and an axle for supporting the rear wheel is provided on the rear axle case. A case is connected to the rear axle bracket via a steering fulcrum shaft so as to be able to change its direction, and a chassis frame is fixed to an upper surface side of a transmission case provided substantially on the same axis as the axle.
「作用」 従って、操向支点軸を中心に方向転換自在に後輪を設
ける構造において、リヤアクスルブラケットによるリヤ
アクスルケース支持構造の簡略化並びに車軸にミッショ
ンケース駆動力を伝える後輪駆動構造の簡略化を容易に
行い得ると共に、前記車台フレームとリヤアクスルケー
スとミッションケースをリヤアクスルブラケットによっ
て連結させるから、車台フレーム及びリヤアクスルブラ
ケット及びミッションケースの連結強度の向上並びに軽
量化を容易に行い得、作業部を前後幅中央部に取付ける
車台フレームの簡略化並びにミッドマウント車体の走行
性能の向上などを容易に図り得るものである。"Operation" Therefore, in the structure in which the rear wheel is provided so as to be able to change its direction around the steering fulcrum axis, the rear axle bracket simplifies the rear axle case support structure and the rear wheel drive structure that transmits the transmission power to the axle. Since the chassis frame, the rear axle case, and the transmission case are connected by the rear axle bracket, the connection strength of the chassis frame, the rear axle bracket, and the transmission case can be easily improved and the weight can be easily reduced. This facilitates simplification of the chassis frame attached to the center portion and improvement of the running performance of the mid-mounted vehicle body.
「実施例」 以下本考案の一実施例を図面に基づいて詳述する。第
1図は要部の説明図、第2図は芝刈機全体の側面図、第
3図は同平面図を示し、図中(1)は乗用型芝刈機であ
り、(2)は前後輪(3)(4)を有する車台フレー
ム、(5)は前記フレーム(2)前部に搭載するエンジ
ン、(6)は前記エンジン(5)を覆うボンネット、
(7)は前記ボンネット(6)後部に備える操向ハンド
ル、(8)はステップ、(9)は後部車体カバー、(1
0)は前記カバー(9)上に設ける運転席、(11)は前
記ステップ(8)の下方に配備するローンモア、(12)
は前記モア(11)の右側に配備する刈草搬送スロワ、
(13)は前記車台フレーム(2)後端にステー(14)を
介して連結してスロワ(12)からの刈草を貯留する集草
タンクである。Embodiment An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory view of a main part, FIG. 2 is a side view of the entire lawn mower, FIG. 3 is a plan view of the same, (1) is a riding lawn mower, and (2) is front and rear wheels. (3) a chassis frame having (4), (5) an engine mounted on the front of the frame (2), (6) a hood covering the engine (5),
(7) a steering handle provided at the rear of the hood (6), (8) a step, (9) a rear body cover, (1)
0) is a driver seat provided on the cover (9), (11) is a lawn mower provided below the step (8), (12)
Is a grass-feeding thrower to be deployed on the right side of the mower (11),
(13) a grass collection tank connected to the rear end of the chassis frame (2) via a stay (14) to store the cut grass from the lower (12).
第4図乃至第5図にも示す如く、前記車台フレーム
(2)は、左右一対の縦フレーム(15)(15)と、左右
縦フレーム(15)(15)の前部及び中央及び後部間をそ
れぞれ連結する前輪支持用フレーム(16)及びハンドル
支持板(17)及び後部横フレーム(18)(19)などから
なり、左右の縦フレーム(15)(15)の左右間隔幅を前
部幅(W1)・後部幅(W2)・中央幅(W3)の順に大(W1
<W2<W3)とさせて、該フレーム(15)(15)の中央全
幅を前後端部に比べ横方向に拡張させて、該拡張フレー
ム部(15a)(15a)に前記モア(11)の左・中央・右切
断刃(11a)(11b)(11c)を配設するように構成して
いる。As shown in FIGS. 4 and 5, the chassis frame (2) includes a pair of left and right vertical frames (15) and (15), and a space between the front, center, and rear of the left and right vertical frames (15) and (15). It consists of a front wheel support frame (16), a handle support plate (17), and a rear horizontal frame (18) (19), etc., connecting the left and right vertical frames (15) and (15) to the front width. (W 1) · rear width (W 2) · large in the order of the central width (W 3) (W 1
<W 2 <W 3 ) so that the entire width of the center of the frames (15) and (15) is expanded in the horizontal direction as compared with the front and rear ends, and the mowers (11) are added to the expanded frame portions (15a) and (15a). ) Left, center and right cutting blades (11a), (11b) and (11c).
また、左右縦フレーム(15)(15)の後端を上下二段
の上下フレーム部(15b)(15c)にそれぞれ分岐形成さ
せるもので、左右縦フレーム(15)の後端を上方に折曲
げてこれより前方の中央拡張フレーム部(15a)及び前
端フレーム部(15d)の水平ラインに対し、上フレーム
部(15b)の水平ラインを高位置に設ける一方、上フレ
ーム部(15b)に基端を固設するL字形の下フレーム部
(15c)の水平ラインをこれより前方のフレーム部(15
a)(15d)の水平ラインより下位置に設けて、これら上
下フレーム部(15b)(15c)後端を後側板(20)で相互
に一体連結させている。また、左右の下フレーム部(15
c)(15c)外側の固定ブラケット(21)にボルト(22)
を介しリヤアクスルブラケット(23)をそれぞれ取付け
ると共に、左右後輪(4)(4)の車軸(24)(24)を
それぞれ支持するリヤアクスルケース(25)を前記ブラ
ケット(23)に水平揺動枢支軸(26)を介して連結させ
ている。なお前記ボルト(22)は車軸(24)を中心とし
た周囲に設けてこのボルト(22)締結部に曲げモーメン
トの発生のない高強度な取付けを行うように構成したも
のである。そして後輪(4)(4)を駆動する油圧式無
段変速機構(HST)(27)を前部に一体連結するミッシ
ョンケース(28)を、左右より囲む状態にリヤアクスル
ブラケット(23)(23)間に固定させて、下フレーム部
(15c)及びリヤアクスルブラケット(23)及びミッシ
ョンケース(28)相互の剛性を向上させて、これらの軽
量化を図るように構成している。In addition, the rear ends of the left and right vertical frames (15) and (15) are branched into upper and lower two-stage upper and lower frame portions (15b) and (15c), respectively, and the rear ends of the left and right vertical frames (15) are bent upward. The horizontal line of the upper frame part (15b) is provided at a high position with respect to the horizontal lines of the central extension frame part (15a) and the front end frame part (15d) in front of this, while the base end of the upper frame part (15b) is provided. The horizontal line of the L-shaped lower frame part (15c) for fixing the
a) It is provided below the horizontal line of (15d), and the rear ends of the upper and lower frame portions (15b) (15c) are integrally connected to each other by the rear side plate (20). Also, the left and right lower frame parts (15
c) (15c) Bolt (22) on outer fixing bracket (21)
The rear axle brackets (23) are attached to the rear axle cases (25) and the rear axle cases (25) that support the axles (24) and (24) of the left and right rear wheels (4) and (4), respectively. They are connected via a shaft (26). The bolt (22) is provided around the axle (24) so as to provide a high-strength attachment to the bolt (22) fastening portion without generating a bending moment. The rear axle brackets (23) (23) surround the transmission case (28) integrally connecting the hydraulic stepless transmission (HST) (27) for driving the rear wheels (4) and (4) to the front from the left and right. ), The lower frame portion (15c), the rear axle bracket (23), and the transmission case (28) are increased in rigidity with each other to reduce their weight.
上記から明らかなように、エンジン(5)及び前輪
(3)を車台フレーム(2)前部に設け、運転席(10)
及び後輪(4)を車台フレーム(2)後部に設けると共
に、前後輪(3)(4)間の車台フレーム(2)下面側
に作業部であるローンモア(11)を装設させる農作業機
の走行装置において、車台フレーム(2)後側下部にリ
ヤアクスルブラケット(23)を固定させ、左右リヤアク
スルブラケット(23)(23)間にミッションケース(2
8)を固定させると共に、後輪(4)を軸支させる車軸
(24)をリヤアクスルケース(25)に設け、該リヤアク
スルケース(25)を前記リヤアクスルブラケット(23)
に操向支点軸である水平揺動枢支軸(26)を介して方向
転換自在に連結させ、前記車軸(24)と略同一軸芯上に
設けるミッションケース(28)の上面側に車台フレーム
(2)を固設させている。そして、水平揺動枢支軸(2
6)を中心に方向転換自在に後輪(4)を設ける構造に
おいて、リヤアクスルブラケット(23)によるリヤアク
スルケース(25)支持構造の簡略化並びに車軸(24)に
ミッションケース(28)駆動力を伝える後輪(4)駆動
構造の簡略化を図れると共に、前記車台フレーム(2)
とリヤアクスルケース(25)とミッションケース(28)
をリヤアクスルブラケット(23)によって連結させるか
ら、車台フレーム(2)及びリヤアクスルブラケット
(23)及びミッションケース(28)の連結強度の向上並
びに軽量化を図れ、ローンモア(11)を前後幅中央部に
取付ける車台フレーム(2)の簡略化並びにミッドマウ
ント車体の走行性能の向上などを図れるように構成して
いる。As is clear from the above, the engine (5) and the front wheels (3) are provided at the front of the chassis frame (2), and the driver's seat (10)
And a rear wheel (4) is provided at the rear of the chassis frame (2), and a lawn mower (11) as a working part is mounted on the underside of the chassis frame (2) between the front and rear wheels (3) and (4). In the traveling device, the rear axle bracket (23) is fixed to the lower rear part of the chassis frame (2), and the transmission case (2) is fixed between the left and right rear axle brackets (23) (23).
An axle (24) for fixing the rear wheel (4) and supporting the rear wheel (4) is provided on the rear axle case (25), and the rear axle case (25) is attached to the rear axle bracket (23).
The vehicle frame is connected to a transmission case via a horizontal swing pivot shaft (26), which is a steering fulcrum shaft, and is mounted on the upper surface of a transmission case (28) provided substantially on the same axis as the axle (24). (2) is fixed. And the horizontal swing pivot (2
In the structure in which the rear wheel (4) is freely rotatable around 6), the rear axle bracket (23) simplifies the support structure for the rear axle case (25) and transmits the driving force of the transmission case (28) to the axle (24). The drive structure for the rear wheel (4) can be simplified, and the chassis frame (2)
And rear axle case (25) and mission case (28)
Are connected by the rear axle bracket (23), so that the connection strength of the chassis frame (2), the rear axle bracket (23) and the transmission case (28) can be improved and the weight can be reduced, and the lawn mower (11) is attached to the center of the front and rear width. The structure is such that the chassis frame (2) can be simplified and the running performance of the mid-mounted vehicle body can be improved.
一方、前記エンジン(5)の出力軸(5a)を変速機構
(27)の入力軸(29)と、前記モア(11)の入力軸(3
0)とに連動連結させるもので、前記出力軸(5a)と変
速入力軸(29)とをプーリ(31)(32)及びベルト(3
3)を介し、また前記出力軸(5a)とモア入力軸(30)
とを前記プーリ(31)と、上下二段に備えるモア入力プ
ーリ(34a)(34b)の何れか一方と、ベルト(35)とを
介し連動連結させている。On the other hand, the output shaft (5a) of the engine (5) is connected to the input shaft (29) of the transmission mechanism (27) and the input shaft (3
0), and the output shaft (5a) and the speed change input shaft (29) are connected to pulleys (31) and (32) and a belt (3).
3) through the output shaft (5a) and the mower input shaft (30)
And the pulley (31), one of the mower input pulleys (34a) and (34b) provided in the upper and lower stages, and a belt (35).
また第6図に示す如く、前記モア(11)の左・中央・
右の3つの切断刃(11a)(11b)(11c)の各回転軸(3
6a)(36b)(36c)に、前記モア入力軸(30)をプーリ
(34a)(34b)より下位置で、各伝達プーリ(37)(38
a)(38b)(38c)及びベルト(39)を介し連動連結さ
せて各切断刃(11a)(11b)(11c)の回転を行う一
方、各切断刃(11a)(11b)(11c)を覆うモアカバー
ケース(40)にブラケット(41)を介しスロワ出力用ギ
ヤケース(42)を固設させ、該ギヤケース(42)に内設
する一対のベベルギヤ(43a)(43b)を介して該ケース
(42)の出力軸(44)を前記入力軸(30)に連動連結さ
せると共に、前記スロワ(12)のスロワ羽根(45)にプ
ーリ(46)(47)及びベルト(48)を介しスロワ(12)
に臨ませる入力軸(49)を連動連結させ、該入力軸(4
9)と前記出力軸(44)とをフレキシブルワイヤ(50)
を介して連動連結させて、前記入力軸(30)でもってス
ロワ羽根(45)の回転も行うように構成している。Also, as shown in FIG.
Each rotating shaft (3) of the right three cutting blades (11a) (11b) (11c)
6a), (36b) and (36c), the mower input shaft (30) is positioned below the pulleys (34a) and (34b), and the transmission pulleys (37) and (38).
a) While rotating the cutting blades (11a) (11b) (11c) by interlocking connection via the (38b) (38c) and the belt (39), each cutting blade (11a) (11b) (11c) is rotated. The lower cover gear case (42) is fixed to the covering mower cover case (40) via the bracket (41), and the case (42) is inserted through a pair of bevel gears (43a) (43b) provided in the gear case (42). The output shaft (44) of (42) is connected to the input shaft (30) in an interlocked manner, and the puller (46) (47) and the belt (48) are connected to the lower blade (45) of the lower (12) through the puller (12). )
The input shaft (49) facing the
9) and the output shaft (44) with a flexible wire (50)
The input shaft (30) also rotates the thrower blade (45).
なお(51)(52)は前記カバーケース(40)の前後部
に取付けるゲージ輪及び遊動輪である。Reference numerals (51) and (52) denote gauge wheels and idler wheels mounted on the front and rear portions of the cover case (40).
第7図乃至第8図に示す如く、前記ハンドル(7)に
よるステアリング機構(53)は、ハンドル軸(7a)にピ
ニオンギヤ(54)を介し連動連結するピットマンギヤ
(55)と、該ギヤ(55)にピットマン軸(56)を介し連
結するピットマンアーム(57)と、左前輪(3)のナッ
クルアーム(58)と前記ピットマンアーム(57)とを連
結する前輪用ドラッグロッド(59)と、右前輪(3)の
ナックルアーム(60)と前記ナックルアーム(58)とを
連結するタイロッド(61)と、4輪(3)(4)操舵時
位相切換レバー(62)の操作でもって後輪(4)を同位
相或いは逆位相に切換えるリヤステアリングケースであ
る位相切換ケース(63)と、該ケース(63)の切換アー
ム(64)と前記ピットマンギヤ(55)とを連結する後輪
用ドラッグロッド(65)と、前記ケース(63)の左右後
輪用タイロッドアーム(66a)(66b)と前記リヤアクス
ルケース(25)に固設する左右後輪用ナックルアーム
(67)(68)とを連結する左右タイロッド(69a)(69
b)とを備え、4輪(3)(4)操舵時前記ピットマン
ギヤ(55)とドラッグロッド(65)とをエンド軸(70)
を介し連動連結させて4輪(3)(4)操舵を行う一
方、2輪(3)操舵時ピットマンギヤ(55)近傍の縦フ
レーム(15)に固設するブラケット(71)の係合孔(7
2)に、前記ドラッグロッド(65)のエンド軸(70)を
付け換え枢支させて前輪(3)のみによる操舵を行うよ
うに構成している。As shown in FIGS. 7 to 8, a steering mechanism (53) using the handle (7) includes a pitman gear (55) interlockingly connected to a handle shaft (7a) via a pinion gear (54), and the gear (55). ), A pitman arm (57) connected to the pitman shaft (56) via a pitman shaft (56), a front wheel drag rod (59) connecting the knuckle arm (58) of the left front wheel (3) and the pitman arm (57), and a right The tie rod (61) connecting the knuckle arm (60) of the front wheel (3) and the knuckle arm (58), and the rear wheel (4) by operating the four-wheel (3) (4) steering phase switching lever (62). 4) A phase switching case (63), which is a rear steering case for switching the phase to the same phase or the opposite phase, and a drag rod for a rear wheel connecting the switching arm (64) of the case (63) and the pitman gear (55). (65) Left and right tie rod arms (66a) (66b) for connecting the left and right rear wheel knuckle arms (67) (68) fixed to the rear axle case (25). 69
b), the pitman gear (55) and the drag rod (65) are connected to the end shaft (70) by steering the four wheels (3) and (4).
The four wheels (3) and (4) are steered by the interlocking connection through the two wheels (3), and the engagement holes of the bracket (71) fixed to the vertical frame (15) near the pitman gear (55) during steering. (7
In (2), the end shaft (70) of the drag rod (65) is replaced so as to be pivotally supported so that the steering is performed only by the front wheel (3).
また4輪(3)(4)操舵時、後輪(4)の左及び右
方向への最大切れ角を規制する支点越防止ピン(73a)
(73b)を左右リヤアクスルブラケット(23)にそれぞ
れ設けて、後輪(4)が最大切れ角となるとき、左右ナ
ックルアーム(67)を前記ピン(73a)(73b)に当接さ
せることによってそれ以上の切れ角となるのを防止する
一方、2輪(3)操舵時、前輪(3)の左及び右方向へ
の最大切れ角を規制する支点越防止ピン(74a)(74b)
を左右ナックルアーム(58)(60)にそれぞれ設けて、
前輪(3)が左及び右方向に最大切れ角となるとき、左
右ナックルアーム(58)(60)の防止ピン(74a)(74
b)をフロントアクスル支持フレーム(75)に当接させ
ることによって、それ以上の切れ角となるのを防止する
ように構成している。つまり前輪(3)の切れ角は2輪
(3)操舵の方が4輪(3)(4)操舵より大で、4輪
(3)(4)操舵時には前記リヤピン(73a)(73b)
で、2輪(3)操舵時には前記フロントピン(74a)(7
4b)で最大切れ角の規制を行うように構成したものであ
る。In addition, when steering the four wheels (3) and (4), a fulcrum over prevention pin (73a) that regulates the maximum turning angle of the rear wheel (4) in the left and right directions.
(73b) are provided on the left and right rear axle brackets (23), respectively, so that the left and right knuckle arms (67) come into contact with the pins (73a) (73b) when the rear wheel (4) has the maximum turning angle. The fulcrum-preventing pins (74a, 74b) for controlling the maximum turning angle of the front wheel (3) in the left and right directions during steering of the two wheels (3) while preventing the above-mentioned turning angles from being obtained.
Knuckle arms (58) and (60)
When the front wheel (3) has the maximum turning angle in the left and right directions, the prevention pins (74a) (74) of the left and right knuckle arms (58) (60)
By contacting the b) with the front axle support frame (75), a further angle of cut is prevented. That is, the turning angle of the front wheels (3) is larger in the two-wheel (3) steering than in the four-wheel (3) (4) steering, and the rear pins (73a) (73b) during the four-wheel (3) (4) steering.
At the time of two-wheel (3) steering, the front pin (74a) (7
In 4b), the maximum turning angle is regulated.
第9図に示す如く、前記切換ケース(63)には、前記
切換アーム(64)のアーム軸(75)に遊嵌させる同位相
及び逆位相用の上下ベベルギヤ(76)(77)と、前記タ
イロッドアーム(66a)(66b)に連結させる出力軸(7
8)に固設して前記ベベルギヤ(76)(77)に噛合せる
従動ベベルギヤ(79)と、前記アーム軸(75)のベベル
ギヤ(76)(77)上下間にスプライン嵌合させてこの上
下位置のギヤ(76)(77)に択一的に結合させる爪クラ
ッチ(80)を備え、前記レバー(62)操作をもってシフ
タフオーク(80a)を介し爪クラッチ(80)を上下移動
させるとき、該クラッチ(80)を上或いは下ベベルギヤ
(76)(77)に結合させて後輪(4)を同位相或いは逆
位相とさせての操舵を行うように構成している。As shown in FIG. 9, upper and lower in-phase and opposite-phase bevel gears (76) (77) loosely fitted to the arm shaft (75) of the switching arm (64) are provided in the switching case (63). Output shaft (7) connected to tie rod arm (66a) (66b)
8) The driven bevel gear (79) which is fixed to the bevel gears (76) and (77) and is engaged with the bevel gears (76) and (77) of the arm shaft (75) by spline fitting. When the claw clutch (80) is moved up and down via the shifter fork (80a) by operating the lever (62), the claw clutch (80) is selectively connected to the gears (76) and (77). 80) is coupled to the upper or lower bevel gears (76), (77) to perform steering with the rear wheels (4) in-phase or out-of-phase.
また、前記タイロッドアーム(66a)(66b)は切換ケ
ース(63)より下方に突出させ、地面に対し略垂直な面
で出力軸(78)を中心として左右揺動させる一方、前記
ナックルアーム(67)(68)はリヤアクスルケース(2
5)より後方に突出させ、略水平面で軸(26)を中心に
揺動させるに設けて、これらアーム(66a)(66b)・
(67)(68)やタイロッド(69a)(69b)の設置スペー
スを後輪(4)後部で機体前後方向に対し非常にコンパ
クトなものとさせ、この前方位置に前記変速機構(27)
及び切換ケース(63)及びバッテリ(87)を一まとめと
しての配設を可能とするように構成している。The tie rod arms (66a) and (66b) are projected downward from the switching case (63) to swing left and right about the output shaft (78) on a plane substantially perpendicular to the ground, while the knuckle arm (67) ) (68) is the rear axle case (2
5) The arm (66a) (66b)
(67) The space for installing the tie rods (69a) (69b) and the tie rods (69a) and (69b) are made very compact in the longitudinal direction of the fuselage at the rear of the rear wheel (4).
The switching case (63) and the battery (87) can be arranged as a unit.
第10図乃至第11図に示す如く、前記モア(11)の駆動
を行うベルト(35)のベルト押え(81)を上下回動自在
に縦フレーム(15)に備えるもので、前記ベルト押え
(81)はベルト(35)を巻回させるプーリ(31)外側を
囲む状態に臨ませる形状のベルト押え部(81a)とこ
の下方に固設するベルト外れ防止ピン(82)と、板バネ
からなる上下操作ハンドル(83)とを備え、左右の前端
フレーム部(15d)内側に固設する枢着板(84)に支点
軸(85)を介してベルト押え(81)の基端筒部(81b)
を支持させ、常時は前記枢着板(84)にロックピン(8
6)でもってハンドル(83)を固定させてベルト押え(8
1)を使用位置に保持する一方、モア(11)やベルト(3
5)の取外し時には前記ピン(86)を抜き取りベルト押
え(81)をその使用位置より離反させることによってそ
の取外しを可能とさせるように構成している。As shown in FIGS. 10 to 11, a vertical frame (15) is provided with a belt presser (81) of a belt (35) for driving the mower (11) in a vertically rotatable manner. 81) is composed of a belt pressing portion (81a) having a shape surrounding the outside of the pulley (31) for winding the belt (35), a belt detachment prevention pin (82) fixed below the belt pressing portion, and a leaf spring. An upper and lower operation handle (83), and a base cylinder part (81b) of a belt presser (81) via a fulcrum shaft (85) on a pivot plate (84) fixed inside the left and right front end frame parts (15d). )
And the lock pin (8) is always attached to the pivot plate (84).
6) Fix the handle (83) with the belt holder (8
While holding 1) in the use position, the mower (11) and the belt (3
At the time of removal of 5), the pin (86) is removed so that the belt presser (81) can be removed by moving it away from its use position.
本実施例は上記の如く構成するものにして、前記縦フ
レーム(15)の中央全幅を前後端部に比べ横方向に拡張
させると共に、該フレーム(15)後端を上下二段の上下
フレーム部(15b)(15c)に分岐形成することによっ
て、縦フレーム(15)全体としての強度向上が図れると
共に、縦フレーム(15)中央部におけるモア(11)の装
着も容易且つ強度良好に行え、また左右の上下フレーム
部(15b)(15c)間に無段変速機構(27)や切換ケース
(63)やバッテリ(87)なども完全且つコンパクトに組
込みできる。In this embodiment, the vertical frame (15) is constructed as described above, and the entire central width of the vertical frame (15) is expanded in the horizontal direction as compared with the front and rear ends. (15b) By forming a branch on (15c), the strength of the entire vertical frame (15) can be improved, and the mower (11) can be easily and easily mounted at the center of the vertical frame (15). A continuously variable transmission mechanism (27), a switching case (63), a battery (87), and the like can be completely and compactly assembled between the left and right upper and lower frame portions (15b) (15c).
さらに、後輪走行用のミッションケース(28)を、縦
フレーム(15)に固設する左右のリヤアクスルブラケッ
ト(23)(23)間に囲むように一体取付けすることによ
って、縦フレーム(15)・リヤアクスルブラケット(2
3)・ミッションケース(28)の三者相互の強度向上が
図れて、これらの軽量化を可能とすることができる。Furthermore, the transmission case (28) for traveling the rear wheels is integrally mounted so as to surround between the left and right rear axle brackets (23) (23) fixed to the vertical frame (15), so that the vertical frame (15) Rear axle bracket (2
3) The strength of the transmission case (28) can be increased, and the weight of these can be reduced.
またさらに、前記後輪(4)の操舵を行う切換ケース
(63)のタイロッドアーム(66a)(66b)及びタイロッ
ド(69a)(69b)及びリヤアクスルケース(25)のナッ
クルアーム(67)(68)などを後輪(4)後部で機体前
後方向に非常にコンパクトに配設できて、この前方位置
に変速機構(27)及び切換ケース(63)及びバッテリ
(87)を一まとめとしてのコンパクトな組込を可能にで
き、機体のリヤオーバハングを小さなものに抑制でき、
デザイン及び重量バランスともに良好なものとさせるこ
とができる。またこれらの最低地上高も高位を確保でき
て安全性の向上と機能の安定保持が図れる。さらにタイ
ロッドアーム(66a)(66b)及びタイロッド(69a)(6
9b)を用いた場合、後輪(4)のステアリングアームと
してベルクランクを用いるものなどに比べ平面視コンパ
クトにして内外輪差を高精度(例えば内輪が27°のとき
外輪は略17°)に設定でき、したがって構成をシンプル
にしてスムーズな機体の旋回を可能にできる。Further, the tie rod arms (66a) (66b) and the tie rods (69a) (69b) of the switching case (63) for steering the rear wheel (4) and the knuckle arms (67) (68) of the rear axle case (25). The rear wheel (4) can be arranged very compactly in the front and rear direction of the fuselage at the rear, and the transmission mechanism (27), the switching case (63) and the battery (87) are compactly arranged at this front position. The rear overhang of the aircraft can be suppressed to a small one,
Good design and weight balance can be achieved. In addition, these minimum ground clearances can be secured at a high level, and safety can be improved and functions can be stably maintained. In addition, tie rod arms (66a) (66b) and tie rods (69a) (6
When 9b) is used, the difference between the inner and outer wheels is high and the difference between the inner and outer wheels is high (for example, when the inner wheel is 27 °, the outer wheel is approximately 17 °), compared to those using a bell crank as the steering arm for the rear wheel (4). Therefore, the configuration can be simplified, and the aircraft can be smoothly turned.
「考案の効果」 以上実施例から明らかなように本考案は、エンジン
(5)及び前輪(3)を車台フレーム(2)前部に設
け、運転席(10)及び後輪(4)を車台フレーム(2)
後部に設けると共に、前後輪(3)(4)間の車台フレ
ーム(2)下面側に作業部(11)を装設させる農作業機
の走行装置において、車台フレーム(2)後側下部にリ
ヤアクスルブラケット(23)を固定させ、左右リヤアク
スルブラケット(23)(23)間にミッションケース(2
8)を固定させると共に、後輪(4)を軸支させる車軸
(24)をリヤアクスルケース(25)に設け、該リヤアク
スルケース(25)を前記リヤアクスルブラケット(23)
に操向支点軸(26)を介して方向転換自在に連結させ、
前記車軸(24)と略同一軸芯上に設けるミッションケー
ス(28)の上面側に車台フレーム(2)を固設させたも
ので、そして、操向支点軸(26)を中心に方向転換自在
に後輪(4)を設ける構造において、リヤアクスルブラ
ケット(23)によるリヤアクスルケース(25)支持構造
の簡略化並びに車軸(24)にミッションケース(28)駆
動力を伝える後輪(4)駆動構造の簡略化を容易に行う
ことができると共に、前記車台フレーム(2)とリヤア
クスルケース(25)とミッションケース(28)をリヤア
クスルブラケット(23)によって連結させるから、車台
フレーム(2)及びリヤアクスルブラケット(23)及び
ミッションケース(28)の連結強度の向上並びに軽量化
を容易に行うことができ、作業部(11)を前後幅中央部
に取付ける車台フレーム(2)の簡略化並びにミッドマ
ウント車体の走行性能の向上などを容易に図ることがで
きるものである。"Effects of the Invention" As is apparent from the above embodiments, the present invention provides an engine (5) and a front wheel (3) at the front of a chassis frame (2), and a driver's seat (10) and a rear wheel (4). Frame (2)
A rear axle bracket is provided on a lower portion of a rear part of a chassis frame (2) in a traveling device of an agricultural work machine which is provided at a rear portion and has a working portion (11) on a lower surface side of a chassis frame (2) between front and rear wheels (3) and (4). (23) and fix the transmission case (2) between the left and right rear axle brackets (23) (23).
An axle (24) for fixing the rear wheel (4) and supporting the rear wheel (4) is provided on the rear axle case (25), and the rear axle case (25) is attached to the rear axle bracket (23).
To the vehicle via a steering fulcrum shaft (26),
A chassis frame (2) is fixedly mounted on the upper surface side of a transmission case (28) provided substantially on the same axis as the axle (24), and can be turned around a steering fulcrum shaft (26). In the structure where the rear wheel (4) is provided, the rear axle bracket (23) simplifies the support structure for the rear axle case (25) and the transmission case (28) for transmitting the driving force to the axle (24). The simplification can be easily performed, and the chassis frame (2), the rear axle case (25), and the transmission case (28) are connected by the rear axle bracket (23), so that the chassis frame (2) and the rear axle bracket (23) are connected. ) And the transmission case (28) can be easily improved in connection strength and weight reduction, and a chassis frame ( ) Improvement in simplicity and mid-mount vehicle running performance in which the it is possible to easily like.
第1図は後輪部の背面説明図、第2図は芝刈機全体の側
面図、第3図は同平面図、第4図は車台フレーム部の側
面説明図、第5図は同平面説明図、第6図はモア部の平
面説明図、第7図はステアリング部の平面説明図、第8
図はリヤステアリング部の背面説明図、第9図は切換ケ
ース部の断面説明図、第10図乃至第11図はベルト押え部
の説明図である。 (2)…車台フレーム (4)…後輪 (23)…リヤアクスルブラケット (25)…リヤアクスルケース (28)…ミッションケース1 is a rear view of the rear wheel portion, FIG. 2 is a side view of the entire lawn mower, FIG. 3 is a plan view of the same, FIG. 4 is a side view of a chassis frame portion, and FIG. FIG. 6, FIG. 6 is an explanatory plan view of the mower portion, FIG. 7 is an explanatory plan view of the steering portion, FIG.
FIG. 9 is a rear view of the rear steering section, FIG. 9 is a cross-sectional view of the switching case section, and FIGS. 10 to 11 are views of the belt holding section. (2) ... chassis frame (4) ... rear wheel (23) ... rear axle bracket (25) ... rear axle case (28) ... transmission case
Claims (1)
ーム(2)前部に設け、運転席(10)及び後輪(4)を
車台フレーム(2)後部に設けると共に、前後輪(3)
(4)間の車台フレーム(2)下面側に作業部(11)を
装設させる農作業機の走行装置において、車台フレーム
(2)後側下部にリヤアクスルブラケット(23)を固定
させ、左右リヤアクスルブラケット(23)(23)間にミ
ッションケース(28)を固定させると共に、後輪(4)
を軸支させる車軸(24)をリヤアクスルケース(25)に
設け、該リヤアクスルケース(25)を前記リヤアクスル
ブラケット(23)に操向支点軸(26)を介して方向転換
自在に連結させ、前記車軸(24)と略同一軸芯上に設け
るミッションケース(28)の上面側に車台フレーム
(2)を固設させたことを特徴とする農作業機の走行装
置。An engine (5) and a front wheel (3) are provided at the front of a chassis frame (2), a driver's seat (10) and a rear wheel (4) are provided at a rear portion of the chassis frame (2), and front and rear wheels (3) are provided. 3)
In a traveling device of an agricultural work machine in which a working portion (11) is mounted on a lower surface side of a chassis frame (2) between (4), a rear axle bracket (23) is fixed to a lower rear portion of a chassis frame (2), and left and right rear axle brackets are provided. (23) The transmission case (28) is fixed between (23) and the rear wheel (4).
A rear axle case (25) is provided on the rear axle case (25), and the rear axle case (25) is connected to the rear axle bracket (23) via a steering fulcrum shaft (26) so as to be able to change its direction. A traveling device for an agricultural work machine, wherein a chassis frame (2) is fixed to an upper surface side of a transmission case (28) provided substantially on the same axis as that of (24).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990128234U JP2547417Y2 (en) | 1990-11-29 | 1990-11-29 | Traveling equipment for agricultural work machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990128234U JP2547417Y2 (en) | 1990-11-29 | 1990-11-29 | Traveling equipment for agricultural work machines |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0483828U JPH0483828U (en) | 1992-07-21 |
JP2547417Y2 true JP2547417Y2 (en) | 1997-09-10 |
Family
ID=31875704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1990128234U Expired - Lifetime JP2547417Y2 (en) | 1990-11-29 | 1990-11-29 | Traveling equipment for agricultural work machines |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2547417Y2 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6116926U (en) * | 1984-07-05 | 1986-01-31 | セイレイ工業株式会社 | Structure of axle case in mobile agricultural machinery |
JPH06263Y2 (en) * | 1986-11-18 | 1994-01-05 | セイレイ工業株式会社 | Attachment structure for mission case and axle case in work equipment |
-
1990
- 1990-11-29 JP JP1990128234U patent/JP2547417Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0483828U (en) | 1992-07-21 |
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