JPH08156626A - Turning device of traveling work machine - Google Patents
Turning device of traveling work machineInfo
- Publication number
- JPH08156626A JPH08156626A JP30054694A JP30054694A JPH08156626A JP H08156626 A JPH08156626 A JP H08156626A JP 30054694 A JP30054694 A JP 30054694A JP 30054694 A JP30054694 A JP 30054694A JP H08156626 A JPH08156626 A JP H08156626A
- Authority
- JP
- Japan
- Prior art keywords
- turning
- switching
- traveling
- front wheel
- brake
- 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.)
- Pending
Links
Landscapes
- Guiding Agricultural Machines (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、ハンドル操作による前
輪の回動切れ角が所定以上になったとき、機体旋回側の
後輪ブレーキを作動させるようにすると共に、反旋回側
の前輪を自動的に増速させることにより旋回走行を行う
走行作業機の旋回装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention operates a rear wheel brake on the turning side of an airframe when the turning angle of the front wheel by a steering wheel operation exceeds a predetermined value, and automatically turns the front wheel on the non-turning side. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turning device for a traveling work machine that performs turning traveling by increasing the speed of the vehicle.
【0002】[0002]
【従来の技術】従来、農用トラクタにおいて耕耘作業を
しながら走行する際、機体の旋回方向に左右の後輪ブレ
ーキを独立制動操作して信地旋回を行い、また、ハンド
ル操作による前輪の切れ角に連動する前輪のタイロッド
中に設置されたセンサの所定値以上の感知作動により、
旋回側の後輪ブレーキを制動して切れ角制動操作による
旋回走行を行うと共に、前記切れ角制動操作状態時にお
ける旋回走行を検知する検知装置を設け、その指令によ
って反旋回側の前輪を増速回転させる前輪増速機構を、
電気系或いは油圧系からなる切換機構によって切換作動
することにより、切れ角制動操作状態時に旋回半径の外
側となる反旋回側の前輪を増速させて小旋回走行するよ
うにしている。2. Description of the Related Art Conventionally, when traveling while cultivating an agricultural tractor, the left and right rear wheel brakes are independently braked in the turning direction of the machine to make a solid turn, and the steering wheel is turned to a sharp corner. By the sensing operation above the predetermined value of the sensor installed in the tie rod of the front wheel that interlocks with,
The rear wheel brake on the turning side is braked to perform turning traveling by the turning angle braking operation, and a detection device for detecting turning traveling in the turning angle braking operation state is provided, and the front wheel on the anti-turning side is accelerated by the command. Front wheel speed increasing mechanism to rotate,
By switching operation by a switching mechanism composed of an electric system or a hydraulic system, the front wheel on the side opposite to the turning side, which is outside the turning radius, is accelerated during the turning angle braking operation state to perform a small turn traveling.
【0003】[0003]
【発明が解決しようとする課題】しかし、前記従来構成
の装置は、切れ角制動操作を行う旋回走行機構と反旋回
側の前輪を増速旋回させる前輪増速機構とが夫々高価格
な電気並びに油圧系により単独に構成されているため、
その構成が複雑化しコスト高となる欠点を有している。
また、各構成部品の兼用化が困難であり、例えば切れ旋
回走行機構のみを備えた走行作業機に、前輪増速機構を
後付け作業により設けることが大幅な改造を要し容易に
できない等の問題がある。However, in the above-mentioned conventional apparatus, the turning traveling mechanism for performing the turning angle braking operation and the front wheel speed increasing mechanism for speeding up the anti-turn side front wheel are both expensive and electric. Since it is configured independently by the hydraulic system,
It has a drawback that its structure becomes complicated and the cost becomes high.
In addition, it is difficult to share each component, and for example, it is not possible to easily install a front wheel speed-increasing mechanism by retrofitting on a traveling work machine that has only a broken turning traveling mechanism, which makes it difficult to do so. There is.
【0004】[0004]
【課題を解決するための手段】前記従来の問題点を解消
するための本発明の走行作業機の旋回装置は、左右の後
輪ブレーキ3がハンドル操作による前輪4aの回動切れ
角が所定以上になったとき、独立制動操作状態から機体
旋回側の後輪ブレーキ3を作動させるように、切れ角制
動操作状態に択一的に切り換え可能な旋回走行機構と、
前輪4aへの伝動機構中に低速回転と増速回転とに切換
可能な前輪増速機構Dを備え旋回走行を行うようにした
走行作業機において、前記旋回走行機構をブレーキペタ
ル2を作動させて旋回側の後輪ブレーキ3を制動するリ
ンク系に構成し、該リンク系中の作動部材20と前輪増
速機構Dを増速側に切り換える切換機構36の切換部材
31とを係脱可能に設けることにより、切れ角制動操作
状態において、ハンドル5の操作によって前記リンク系
の作動部材が制動方向に作動されるとき、切換部材31
を係合作動させ切換機構36を切り換えて反旋回側の前
輪4aを増速することにより、旋回走行を行うようにし
ている。SUMMARY OF THE INVENTION In the turning device for a traveling work machine of the present invention for solving the above-mentioned conventional problems, the turning break angle of the front wheel 4a by the steering wheel operation of the left and right rear wheel brakes 3 is not less than a predetermined value. And a turning traveling mechanism capable of being selectively switched to a turning angle braking operation state so as to operate the rear wheel brake 3 on the vehicle body turning side from the independent braking operation state,
In a traveling work machine equipped with a front wheel speed increasing mechanism D capable of switching between low-speed rotation and speed-up rotation in a transmission mechanism to the front wheels 4a so as to perform turning traveling, the turning traveling mechanism is operated by operating the brake petal 2. A link system for braking the rear wheel brake 3 on the turning side is configured, and an operating member 20 in the link system and a switching member 31 of a switching mechanism 36 for switching the front wheel speed increasing mechanism D to the speed increasing side are detachably provided. Thus, when the operating member of the link system is operated in the braking direction by operating the handle 5 in the turning angle braking operation state, the switching member 31
Is engaged to operate the switching mechanism 36 to increase the speed of the front wheel 4a on the non-turning side, so that the turning traveling is performed.
【0005】[0005]
【作 用】前記構成により、耕耘作業等において切れ角
制動操作を行うとき、ハンドル5の所定以上の回動操作
により、旋回方向側の後輪ブレーキ3は旋回走行機構の
リンク系を介し作動部材20が作動されて制動される。
この作動部材20の作動に伴い切換部材31が離脱状態
から係合状態となって可動することにより、切換機構3
6を切換え前輪増速機構Dによって反旋回側の前輪4a
を増速回転させ、速やかな小旋回走行を行うように作用
する。[Operation] With the above-described configuration, when the turning angle braking operation is performed in the cultivating work or the like, the rear wheel brake 3 on the turning direction side is actuated through the link system of the turning traveling mechanism by the turning operation of the handle 5 more than a predetermined amount. 20 is activated and braked.
With the operation of the operating member 20, the switching member 31 moves from the disengaged state to the engaged state, whereby the switching mechanism 3 is moved.
6 by switching the front wheel speed increasing mechanism D to the front wheel 4a on the side opposite to the turning side.
To increase the speed of rotation and to perform a quick small turn travel.
【0006】[0006]
【実 施 例】本発明の実施例を図面を参照して説明す
る。1は走行作業機の一実施例として示すトラクタの機
体であり、運転席1aの足元に設けられた左右のブレー
キペダル2で独立制動操作可能に連繋される後輪ブレー
キ3を持つ左右の後輪4と、運転席1aに設置したハン
ドル5で切り角を回動操作される左右の前輪4aで支持
され、機体1の前方部にエンジンを搭載し、後方に耕耘
装置等の作業機を連結するようになっている。EXAMPLES Examples of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a vehicle body of a tractor shown as an example of a traveling work machine, and left and right rear wheels having rear wheel brakes 3 that are linked to each other by independent left and right brake pedals 2 provided at the foot of a driver's seat 1a. 4 and left and right front wheels 4a whose turning angle is turned by a steering wheel 5 installed in the driver's seat 1a, an engine is mounted in the front part of the machine body 1, and a working machine such as a tiller is connected to the rear side. It is like this.
【0007】前記左右のブレーキペダル2は、機体フレ
ーム1bの左右に貫通突設した右方側の支軸2aに併設
され、一方のブレーキペダルは支軸2aに回動可能に軸
支され、他方のブレーキペダルは支軸2aと一体回動す
るように軸支するとともに、後輪ブレーキ3の作動部材
3aにブレーキ杆3bを介して各別に連結し、非制動時
には後輪ブレーキ3内に非制動状態に付勢している維持
スプリング(図示しない)によって、図1実線位置とな
るように弾性支持されている。The left and right brake pedals 2 are juxtaposed to a right side support shaft 2a penetrating the left and right sides of the body frame 1b, and one brake pedal is rotatably supported by the support shaft 2a and the other. The brake pedal is pivotally supported so as to rotate integrally with the support shaft 2a, and is separately connected to the operating member 3a of the rear wheel brake 3 through the brake rod 3b. It is elastically supported by the maintaining spring (not shown) biased to the state so as to be in the position shown by the solid line in FIG.
【0008】前記ハンドル5は油圧ステアリングユニッ
ト5aを介して左右の油圧アクチュエータ5b(図1)
を伸縮させることによりナックルアーム7aを押し引き
動作させ、前輪4aを支持するフロントアクスル7を回
動させてこの前輪4aを所望の切れ角に操作して走行す
るようにしてある。そして前記左右のブレーキペダル2
は前輪4aの所定切れ角以上の回動により後述する変換
機構〔A〕及び作動機構〔B〕よりなる旋回走行機構を
介して左右の後輪ブレーキ3を各別に切れ角制動すると
ともに、この切れ角制動作用を副変速操作部材(副変速
レバー8)と連繋させた切換レバー9からなる切換機構
〔C〕により、「作用状態」と「非作用状態」とに選択
的に切換できるように構成している。The handle 5 is provided with a hydraulic steering unit 5a and left and right hydraulic actuators 5b (FIG. 1).
The knuckle arm 7a is pushed and pulled by expanding and contracting, and the front axle 7 supporting the front wheel 4a is rotated to operate the front wheel 4a at a desired turning angle and to travel. And the left and right brake pedals 2
The left and right rear wheel brakes 3 are individually braked by turning angle of the front wheels 4a over a predetermined turning angle through a turning traveling mechanism including a conversion mechanism [A] and an operating mechanism [B], which will be described later. A switching mechanism [C] including a switching lever 9 in which the angular braking action is linked to the sub-transmission operating member (sub-transmission lever 8) is configured to be selectively switchable between the "acting state" and the "non-acting state". are doing.
【0009】前記変換機構〔A〕は、フロントアクスル
7とこれに連結されたロッド7bによって揺動される作
動片10a付きの変換アーム10と、この変換アーム1
0の左右に配置されたリンクアーム13とを有し、これ
らの部材10,13は機体フレーム(伝動ケース)1b
に取付けた取付板14の側面に突設した支軸15に揺動
可能に軸支している。そして前記2つのリンクアーム1
3にロッド11の一端をスプリング12を介して各々連
結し、他端を左右の作動機構Bを構成する作動アーム2
0に連結している。The conversion mechanism [A] includes a conversion arm 10 with an actuating piece 10a that is swung by a front axle 7 and a rod 7b connected to the front axle 7, and the conversion arm 1.
0 and the link arms 13 arranged on the left and right, and these members 10 and 13 are the body frame (transmission case) 1b.
It is swingably supported by a support shaft 15 projecting from the side surface of a mounting plate 14 mounted on. And the two link arms 1
3, one end of the rod 11 is connected to each other via a spring 12, and the other end is a left and right actuating mechanism B.
It is connected to 0.
【0010】そしてリンクアーム13は取付板14に設
けたストッパ16(図2)によって互いの揺動範囲を規
制し、このリンクアーム13に螺合した接当部13aが
前記ロッド7bの押し引き動作で揺動回動を行う変換ア
ーム10と共に運動する作動片10aに互いに対向する
ように設けて、前輪4aの左右回動に連繋させた、作動
機構Bの左右の作動アーム20を個々に引き動作し、こ
の作動アーム20を揺動させるようにしている。Then, the link arms 13 restrict the swinging range of each other by a stopper 16 (FIG. 2) provided on the mounting plate 14, and a contact portion 13a screwed to the link arm 13 pushes and pulls the rod 7b. The left and right actuating arms 20 of the actuating mechanism B, which are provided so as to oppose each other on the actuating pieces 10a that move together with the converting arm 10 that swings and rotate, are linked to the left and right turning of the front wheel 4a, are individually pulled. However, the operating arm 20 is swung.
【0011】また、リンクアーム13に設けたボルト式
の接当部13aを調節することにより、変換アーム10
に設けた作動片10aに接当するタイミングを調節して
前輪4aの切れ角による作動タイミングを機外から簡単
に行なうことができる。一方、作動機構〔B〕は前記左
右の作動アーム20を機体フレーム1bに着脱可能な取
付板21に突設した支軸22に揺動回動可能に支持し、
変換機構〔A〕の動作を伝えるロッド11を前記作動ア
ーム20に連結し、この作動アーム20にはロッド11
の作動方向と反対方向に付勢されたスプリング23を張
設し、前記取付板21に設けたストッパ24に接当させ
て図1の実線で示す位置にその揺動範囲を規制してい
る。Further, the conversion arm 10 is adjusted by adjusting a bolt type contact portion 13a provided on the link arm 13.
By adjusting the timing of contact with the operating piece 10a provided on the vehicle, the operating timing depending on the turning angle of the front wheel 4a can be easily performed from outside the machine. On the other hand, the operating mechanism [B] supports the left and right operating arms 20 on a supporting shaft 22 projecting from a mounting plate 21 which is attachable to and detachable from the machine body frame 1b so as to be swingable.
A rod 11 for transmitting the operation of the conversion mechanism [A] is connected to the operating arm 20, and the rod 11 is connected to the operating arm 20.
A spring 23 biased in a direction opposite to the operating direction is stretched and abutted against a stopper 24 provided on the mounting plate 21 to regulate the swing range to the position shown by the solid line in FIG.
【0012】また前記左右の作動アーム20と共に運動
する他片に回動ピン25bを介して切換部材25の一端
を枢支し、左右のブレーキペダル2の基部には「コ字」
状のホルダー2b内にピン2cを横設した係合部材2e
(図2)を設け、この係合部材2e内に前記切換部材2
5を上下スライド可能でかつ回動ピン25b廻りに揺動
可能に嵌挿している。Further, one end of the switching member 25 is pivotally supported by another piece which moves together with the left and right actuating arms 20 through a turning pin 25b, and the base portions of the left and right brake pedals 2 have a "U" shape.
Member 2e in which a pin 2c is provided horizontally in a holder 2b
(FIG. 2) is provided, and the switching member 2 is provided in the engaging member 2e.
5 is vertically slidable and is swingably fitted around the rotation pin 25b.
【0013】そしてこの切換部材25の一側面の中央部
には前記ピン2cと係合する際の切換融通代Hである係
合部25aを凹状に切欠いて形成している。また、その
切換部材25の下端を前記切換レバー9にロッド9a
(図3)を介して連結する中間リンク9bのロッド9c
に連結している。前記係合部25aの切換融通代Hの長
さは図1,図3の実線に示すように、切換レバー9が入
の状態(実線で示す状態)にいて、左右のブレーキペダ
ル2を単独に操作する際に係合部材2eに設けたピン2
cの揺動作動を妨げない作動量だけ切欠されている。そ
してこの係合部25aの下方に形成した段部は、非制動
姿勢にあるブレーキペダル2のピン2cと係合接当する
「ブレーキ待機状態」に位置するようにしている。At the center of one side surface of the switching member 25, an engaging portion 25a serving as a switching accommodation margin H when engaging with the pin 2c is formed by notching in a concave shape. Further, the lower end of the switching member 25 is connected to the switching lever 9 by the rod 9a.
The rod 9c of the intermediate link 9b connected via (FIG. 3)
Connected to. As shown by the solid line in FIGS. 1 and 3, the length of the switching allowance H of the engaging portion 25a is such that the switching lever 9 is in the engaged state (the state shown by the solid line) and the left and right brake pedals 2 are independently operated. Pin 2 provided on the engaging member 2e when operating
Notched by an amount that does not hinder the swinging motion of c. The stepped portion formed below the engaging portion 25a is positioned in the "brake standby state" in which the stepped portion is engaged with the pin 2c of the brake pedal 2 in the non-braking posture.
【0014】そしてこの切換部材25は、切換レバー9
が図5の鎖線で示すように下方に操作されることによ
り、ロッド9a、中間リンク9b、ロッド9cを介して
押動され、回動ピン25bを中心に前方に鎖線のように
回動してブレーキペダル2のピン2cとの係合を解除し
て切り位置にする。この係合解除によりブレーキペダル
2は前輪4aの回動による作動機構〔B〕との連繋が解
除され、ブレーキペダル2のみの独立制動操作を可能と
する。The switching member 25 is provided with a switching lever 9
Is operated downward as shown by the chain line in FIG. 5, it is pushed through the rod 9a, the intermediate link 9b, and the rod 9c, and is rotated forward about the rotation pin 25b as shown by the chain line. The engagement with the pin 2c of the brake pedal 2 is released to the cut position. By this disengagement, the brake pedal 2 is released from the connection with the operating mechanism [B] by the rotation of the front wheels 4a, and the independent braking operation of only the brake pedal 2 is enabled.
【0015】また切換機構〔C〕には切換レバー9の上
方に機体フレーム1bの伝動ケース内に構成される副変
速機構(図示せず)を高速側Hと低速側Lとに切換え操
作する副変速レバー8が設けてあり(図3)、この副変
速レバー8は切換レバー9に突設した突起9eに係合す
る長孔8aを穿設した戻し杆8bを設けている。従っ
て、副変速レバー8が図5に示す実線の低速側L位置か
ら、鎖線の高速側Hに操作されるとき、前記長孔8aの
上端部が突起9eに接当して切換レバー9を前記切換部
材25が切り位置となる鎖線の状態に切換えるように連
動させている。Further, in the switching mechanism [C], an auxiliary transmission mechanism (not shown) formed in the transmission case of the body frame 1b above the switching lever 9 is operated to switch between a high speed side H and a low speed side L. A shift lever 8 is provided (FIG. 3), and the sub shift lever 8 is provided with a return rod 8b having a long hole 8a engaged with a projection 9e projecting from the switching lever 9. Therefore, when the auxiliary transmission lever 8 is operated from the low speed side L position of the solid line shown in FIG. 5 to the high speed side H of the chain line, the upper end of the elongated hole 8a abuts the projection 9e and the switching lever 9 is moved. The switching member 25 is interlocked so as to switch to the state of the chain line that is the cut position.
【0016】また副変速レバー8は切換レバー9が切り
位置にあるとき、支点8cを中心に低速側Lに回動して
も、長孔8aで融通されるので、この切換レバー9を切
り位置にしたまま所望に操作することができるようにな
っている。そして前記副変速レバー8の長孔8aにより
切換レバー9はこの副変速レバー8が低速側Lにあると
きは、これを作動させることなく支点9fを中心に入り
切り操作を自由に行なうことができる。Further, when the switching lever 9 is in the cut position, the auxiliary transmission lever 8 is accommodated in the elongated hole 8a even if it is rotated around the fulcrum 8c toward the low speed side L. It is possible to operate it as desired while keeping it. When the auxiliary shift lever 8 is on the low speed side L, the switching lever 9 can freely perform the turning operation around the fulcrum 9f without operating the auxiliary shift lever 8 due to the elongated hole 8a of the auxiliary shift lever 8.
【0017】また、前記のように構成した変換機構
〔A〕及び作動機構〔B〕を運転席1aのシート1c前
方の足元部に敷設されたステップ1d下部において、機
体フレーム1bの側面空間部に着脱可能に設置し、その
取付けを支軸22,15が突設した各取付板21,14
をボルト1e(図2)で着脱可能に取着するとともに、
各ロッド11,7b,9c及びリンク類(9b)等で連
結して構成するようにしている。Further, the conversion mechanism [A] and the actuation mechanism [B] configured as described above are installed in the side surface space portion of the machine body frame 1b at the lower part of the step 1d laid on the foot portion in front of the seat 1c of the driver's seat 1a. Each of the mounting plates 21 and 14 is detachably installed, and the mounting shafts 21 and 15 project from the mounting shafts 21 and 14.
Is detachably attached with the bolt 1e (Fig. 2),
The rods 11, 7b, 9c and links (9b) are connected to each other.
【0018】以上のようにリンク系で一連に構成された
旋回走行機構中には、切れ角制動操作状態時に反旋回側
の前輪4aを増速回転させる前輪増速機構〔D〕が以下
の構成により設置されている。図7に示すように、前輪
増速機構〔D〕は公知の構成によって機体フレーム1b
に取付けると共に、内部の変速ギヤ等を切り換え伝動機
構により左右の前輪4aを低速回転の通常走行と高速回
転の増速走行を可能とするように構成され、その切り換
えを前記旋回走行機構のリンク系中に設けた作動アーム
(作動部材)20の作動によって、切換機構36の切換
部材31を係合作動させて行うようにしている。In the turning traveling mechanism composed of a series of link systems as described above, a front wheel speed increasing mechanism [D] for speeding up rotation of the front wheel 4a on the non-turning side in the turning angle braking operation state has the following structure. It is installed by. As shown in FIG. 7, the front wheel speed increasing mechanism [D] has a well-known configuration and has a body frame 1b.
The left and right front wheels 4a are configured to enable normal running at low speed rotation and increased speed running at high speed by switching the internal transmission gears and the like by means of a transmission mechanism. By the operation of the operation arm (operation member) 20 provided therein, the switching member 31 of the switching mechanism 36 is engaged and operated.
【0019】即ち、切れ角制動操作状態時において、ハ
ンドル5の回動操作によってフロントアクスル7,ロッ
ド11を介して支軸30に遊嵌された作動アーム(作動
部材)20が所定量回動し、センサアーム(切換部材)
31に係合しこれを同方向に回動させる。これにより、
機体フレーム1bに嵌挿された支軸30の他端に固着し
た切換片32が、ロッド33に挿着した調節スプリング
34を介し切換片35を同方向に引き、この切換片35
が油圧切換バルブ等からなる切換機構36のプッシュロ
ッド36aを押接して油圧管路37を介し前輪増速機構
〔D〕内に設置される変速ギヤを切り換えて、左右の前
輪4aのうち反旋回側の前輪4aを通常の走行回転状態
から択一的に増速回転するように構成している。That is, in the turning angle braking operation state, the operating arm (operating member) 20 loosely fitted to the support shaft 30 via the front axle 7 and the rod 11 is rotated by a predetermined amount by the rotating operation of the handle 5. , Sensor arm (switching member)
31 is engaged and rotated in the same direction. This allows
The switching piece 32 fixed to the other end of the support shaft 30 fitted into the machine body frame 1b pulls the switching piece 35 in the same direction via the adjusting spring 34 inserted into the rod 33, and this switching piece 35
Is pressed against a push rod 36a of a switching mechanism 36 composed of a hydraulic switching valve or the like to switch a speed change gear installed in the front wheel speed increasing mechanism [D] via a hydraulic line 37, so that the left and right front wheels 4a are not turned. The front wheel 4a on the side is configured to be rotated at an increased speed alternatively from the normal traveling rotation state.
【0020】また、前記のようにして増速回転される前
輪4aは前記作動機構〔B〕の作動アーム20を作動部
材としたことにより、ブレーキペタル2が制動作動を完
了するより以前のタイミングを以て反旋回側の前輪4a
を増速させることができ、円滑な小旋回を急激に行うこ
となく良好に行う利点がある。尚、切れ角制動操作時に
前輪増速を行うことなく通常走行速度で旋回を行う場合
には、図8に示す切換クラッチ40のワイヤ41を、運
転席1a側から引き操作することにより簡単に行うこと
ができる。Further, the front wheel 4a that is rotated at the increased speed as described above uses the actuating arm 20 of the actuating mechanism [B] as an actuating member, so that the brake petal 2 has a timing before completing the braking operation. Anti-turn side front wheel 4a
Can be accelerated, and there is an advantage that a smooth small turn can be satisfactorily performed without abruptly. In the case of turning at the normal traveling speed without increasing the front wheels during the turning angle braking operation, the wire 41 of the switching clutch 40 shown in FIG. 8 is simply pulled by operating from the driver seat 1a side. be able to.
【0021】即ち、この切換クラッチ40は切換部材3
1の基端部に形成した軸部31aを支軸30内にスライ
ド可能に係合させると共に、他端部に曲成した係合片3
1bを左右の作動部材20,20の作動方向を横断する
ように交差させ、前記ワイヤ41を張圧スプリング42
に抗して引くように構成し、切換部材31をその係合片
31bと作動部材20,20との係合を断つように軸方
向にスライドさせることによって行う。That is, the switching clutch 40 is the switching member 3
A shaft portion 31a formed at the base end portion of 1 is slidably engaged in the support shaft 30, and an engagement piece 3 is bent at the other end portion.
1b is crossed so as to traverse the operating direction of the left and right actuating members 20, 20, and the wire 41 is attached to the tension spring 42.
The switching member 31 is slid in the axial direction so as to break the engagement between the engagement piece 31b and the operating member 20, 20.
【0022】次に、本発明に係る装置を装備した走行作
業機1の走行作業を説明する。図5の鎖線で示すように
切換レバー9を押して「切り位置」とすると、副変速レ
バー8がどの位置にあろうとも切換部材25はブレーキ
ペダル2の係合部材2e(図2)との係合を離脱して解
除された状態となる。従って、前輪4aが左又は右方向
に旋回すると、変換機構〔A〕の変換アーム10に設け
た作動片10aが回動してリンクアーム13の接当部1
3aに接当し、このリンクアーム13に接続したロッド
11を介し、左又は右の作動アーム20を作動させる。Next, traveling work of the traveling work machine 1 equipped with the device according to the present invention will be described. When the switching lever 9 is pushed to the "cut position" as shown by the chain line in FIG. 5, the switching member 25 is engaged with the engaging member 2e (FIG. 2) of the brake pedal 2 regardless of the position of the auxiliary transmission lever 8. It becomes a state that it is released by leaving the case. Therefore, when the front wheel 4a turns to the left or right, the operating piece 10a provided on the conversion arm 10 of the conversion mechanism [A] is rotated to contact the contact portion 1 of the link arm 13.
The left or right actuating arm 20 is actuated via the rod 11 that is in contact with 3a and is connected to this link arm 13.
【0023】この状態になるとナックルアーム7aが設
定切れ角に操向回動されたとしてもブレーキペダル2を
動作させることがなく、後輪ブレーキ3を切れ角連動制
動せず、従って、オペレータのブレーキペダル2の足踏
み操作により従前のものと同様にブレーキペダル2を操
作する独立制動のみを可能とする。そして耕耘作業等、
切れ角制動操作を要する作業の場合には、切換レバー9
を上動させて「入り位置」とすることにより、副変速レ
バー8を操作することなく切換レバー9のみの簡単な操
作で低速走行による切換レバー9による作業を行なうこ
とができる。In this state, the brake pedal 2 is not operated even if the knuckle arm 7a is steered and rotated to the set turning angle, and the rear wheel brake 3 is not braked in conjunction with the turning angle. By pedaling the pedal 2, only independent braking is possible by operating the brake pedal 2 as in the conventional one. And plowing work,
In the case of work that requires a break angle braking operation, the switching lever 9
By moving the switch to the "entering position", the work by the switching lever 9 at low speed running can be performed by a simple operation of only the switching lever 9 without operating the auxiliary transmission lever 8.
【0024】このとき、ハンドル5の所定以上の回動操
作により、旋回方向側の後輪ブレーキ3は旋回走行機構
のリンク系を介し作動部材20が作動されて制動され
る。この作動部材20の作動に伴い切換部材31が離脱
状態から係合状態となって可動することにより、切換機
構36を切換え反旋回側の前輪4aを増速回転させ、切
れ角制動操作による旋回と相挨って速やかな小旋回走行
を行うことができ、耕耘作業等を高精度に能率よく行う
ことができる。At this time, when the handle 5 is rotated more than a predetermined amount, the rear wheel brake 3 on the turning direction side is braked by operating the operating member 20 via the link system of the turning traveling mechanism. When the switching member 31 moves from the disengaged state to the engaged state in accordance with the operation of the operating member 20, the switching mechanism 36 is switched to rotate the front wheel 4a on the anti-turning side at an increased speed, and the turning operation is performed by the turning angle braking operation. It is possible to perform small turning swiftly due to dust and to perform plowing work with high accuracy and efficiency.
【0025】[0025]
【発明の効果】前記のように構成された本発明によれば
以下のような効果を奏することができる。ハンドル操作
によって前輪の回向に基づく旋回走行機構のリンク系の
作動、及びこのリンク系に設けた切換部材の作動によ
り、切れ角制動操作状態で旋回側の後輪ブレーキを制動
させると共に、前輪増速機構の切換機構を切り換え作動
させるようにしたので、反旋回側の前輪を的確に増速す
ることができて切れ角制動操作状態の小旋回走行を速や
かに行うことができる。According to the present invention configured as described above, the following effects can be obtained. By operating the link system of the turning traveling mechanism based on the turning of the front wheels by the operation of the steering wheel and the operation of the switching member provided in this link system, the rear wheel brake on the turning side is braked in the turning angle braking operation state, and the front wheel is increased. Since the switching mechanism of the speed mechanism is operated to be switched, the front wheel on the side opposite to the turning side can be accurately increased in speed, and the small turn traveling in the turning angle braking operation state can be promptly performed.
【0026】また、前輪増速機構の切換部材を旋回走行
機構のリンク系中の作動部材に係脱することによって行
うようにしたので、その構成を複雑化させることなく、
簡単で組付け操作が容易であり、且つ廉価な走行作業機
の旋回装置を提供することができる。Further, since the switching member of the front wheel speed increasing mechanism is engaged with and disengaged from the actuating member in the link system of the turning mechanism, the structure is not complicated.
It is possible to provide a swing device for a traveling work machine that is simple, easy to assemble, and inexpensive.
【図1】本発明の実施例の構成を示す連繋図である。FIG. 1 is a connection diagram showing a configuration of an exemplary embodiment of the present invention.
【図2】本発明の実施例の構成を示す分解斜視図であ
る。FIG. 2 is an exploded perspective view showing the configuration of the embodiment of the present invention.
【図3】本発明の実施例の要部を示す側面図である。FIG. 3 is a side view showing a main part of the embodiment of the present invention.
【図4】図3の装置の作用図である。4 is an operational view of the device of FIG.
【図5】切換レバー及び副変速レバーを示す側面図であ
る。FIG. 5 is a side view showing a switching lever and an auxiliary shift lever.
【図6】前輪増速機構の実施例における旋回走行機構と
切換部材との連繋構成を示す側面図である。FIG. 6 is a side view showing a configuration in which the turning traveling mechanism and the switching member are connected to each other in the embodiment of the front wheel speed increasing mechanism.
【図7】図6の背面図である。FIG. 7 is a rear view of FIG. 6;
【図8】切換部材の取付け構成を示す要部の断面図であ
る。FIG. 8 is a cross-sectional view of a main part showing a mounting structure of a switching member.
1 機体 1b 機体フレーム 2 ブレーキペダ
ル 2b ホルダー 2c ピン 2e 係合部材 3 後輪ブレーキ 4後輪 4a 前輪 7a
ナックルアーム 8 副変速レバー 9 切換レバー 10 変換
アーム 13 リンクアーム 14,21 取付板 15,
22 支軸 20 作動アーム(作動部材) 25 切換部材
30 支軸 31 センサアーム(切換部材) 32,35 切換片 36 切換機構 A 変換機構 B 作動機構 C 切換機構 D
前輪増速機構1 Airframe 1b Airframe frame 2 Brake pedal 2b Holder 2c Pin 2e Engaging member 3 Rear wheel brake 4 Rear wheel 4a Front wheel 7a
Knuckle arm 8 Sub-shift lever 9 Switching lever 10 Conversion arm 13 Link arm 14, 21 Mounting plate 15,
22 spindle 20 operating arm (operating member) 25 switching member
30 support shaft 31 sensor arm (switching member) 32, 35 switching piece 36 switching mechanism A converting mechanism B operating mechanism C switching mechanism D
Front wheel speed-up mechanism
Claims (1)
よる前輪4aの回動切れ角が所定以上になったとき、独
立制動操作状態から機体旋回側の後輪ブレーキ3を作動
させるように、切れ角制動操作状態に択一的に切り換え
可能な旋回走行機構と、前輪4aへの伝動機構中に低速
回転と増速回転とに切換可能な前輪増速機構Dを備え旋
回走行を行うようにした走行作業機において、 前記旋回走行機構をブレーキペタル2を作動させて旋回
側の後輪ブレーキ3を制動するリンク系に構成し、該リ
ンク系中の作動部材20と前輪増速機構Dを増速側に切
り換える切換機構36の切換部材31とを係脱可能に設
けることにより、切れ角制動操作状態において、ハンド
ル5の操作によって上記リンク系の作動部材が制動方向
に作動されるとき、切換部材31を係合作動させ切換機
構36を切り換えて反旋回側の前輪4aを増速すること
により、旋回走行を行うことを特徴とする走行作業機の
旋回装置。1. When the left and right rear wheel brakes 3 have a turning cut angle of the front wheels 4a by a steering wheel operation of a predetermined value or more, the rear wheel brakes 3 are operated so as to operate the rear wheel brakes 3 from the independent braking operation state. A turning traveling mechanism that can be selectively switched to the angular braking operation state and a front wheel speed increasing mechanism D that can switch between low speed rotation and speed increasing rotation in the transmission mechanism to the front wheels 4a are provided to perform turning traveling. In the traveling work machine, the turning traveling mechanism is configured as a link system that operates the brake petal 2 to brake the turning-side rear wheel brake 3, and the operating member 20 and the front wheel speed increasing mechanism D in the link system are accelerated. By providing the switching member 31 of the switching mechanism 36 for switching to the side so as to be disengageable, when the operating member of the link system is operated in the braking direction by the operation of the handle 5 in the turning angle braking operation state, the switching unit By the 31 accelerated the front wheels 4a of switching the switching mechanism 36 is engaged in operation counter turning side, the traveling working machine turning apparatus characterized by performing the turning.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30054694A JPH08156626A (en) | 1994-12-05 | 1994-12-05 | Turning device of traveling work machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30054694A JPH08156626A (en) | 1994-12-05 | 1994-12-05 | Turning device of traveling work machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08156626A true JPH08156626A (en) | 1996-06-18 |
Family
ID=17886135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30054694A Pending JPH08156626A (en) | 1994-12-05 | 1994-12-05 | Turning device of traveling work machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08156626A (en) |
-
1994
- 1994-12-05 JP JP30054694A patent/JPH08156626A/en active Pending
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