JPH06212658A - Blade turning operation device for motor grader - Google Patents
Blade turning operation device for motor graderInfo
- Publication number
- JPH06212658A JPH06212658A JP5296286A JP29628693A JPH06212658A JP H06212658 A JPH06212658 A JP H06212658A JP 5296286 A JP5296286 A JP 5296286A JP 29628693 A JP29628693 A JP 29628693A JP H06212658 A JPH06212658 A JP H06212658A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- turning
- signal
- valve
- motor grader
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Operation Control Of Excavators (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、モータグレーダのブレ
ードを旋回操作する装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for rotating a blade of a motor grader.
【０００２】[0002]
【従来の技術】モータグレーダは例えば図１に示すもの
が知られている。すなわち、車体１の前端部にドローバ
２を揺動自在に支承し、このドローバ２と車体１とに亘
って左右昇降シリンダ３，４及び横送りシリンダ５を連
結し、このドローバ２に旋回サークル６を旋回油圧モー
タ７で旋回自在に設け、この旋回サークル６のブラケッ
ト８にブレード９をシフトシリンダ１０で左右移動自在
に設けてあると共に、前輪１１を図示しないリーニング
シリンダで左右の傾倒（リーニング）できるようにして
ある。2. Description of the Related Art For example, a motor grader shown in FIG. 1 is known. That is, a drawbar 2 is swingably supported at the front end of the vehicle body 1, the left and right lifting cylinders 3 and 4 and the lateral feed cylinder 5 are connected between the drawbar 2 and the vehicle body 1, and the turning circle 6 is connected to the drawbar 2. Is rotatably provided by a slewing hydraulic motor 7, and a blade 9 is movably provided on a bracket 8 of the slewing circle 6 by a shift cylinder 10, and the front wheel 11 can be leaned left and right by a leaning cylinder (not shown). Is done.
【０００３】前記各シリンダや旋回油圧モータ７を駆動
してブレード９を昇降、旋回等行なうには、各シリンダ
や旋回油圧モータ７に圧油を供給する方向制御弁をそれ
ぞれ設け、この各方向制御弁を操作レバーによって切換
えるようにしている。In order to drive the cylinders and the swing hydraulic motor 7 to move the blade 9 up and down, swing, etc., a directional control valve for supplying pressure oil to each cylinder and the swing hydraulic motor 7 is provided, and each directional control is performed. The valve is switched by the operating lever.
【０００４】[0004]
【発明が解決しようとする課題】前述のモータグレーダ
においてブレード９を旋回して車体１前後方向とブレー
ド９のなす角度、つまり推進角を変えるには、操作レバ
ーを操作して旋回用の方向制御弁を切換えて旋回用油圧
モータ７に圧油を供給して旋回サークル６とともにブレ
ード９を旋回させているが、ブレード９の左右端部が円
弧を描いて移動するためにブレード９の左右端部位置が
旋回前と旋回後、つまりブレードの推進角を変更した場
合に異なり、導路の路肩部分を整地作業している時等に
ブレード９の左右端部が縁石等の障害物に衝突すること
がある。In order to change the angle formed by the blade 9 in the motor grader by turning the blade 9 and the front-back direction of the vehicle body 1, that is, the propulsion angle, the operating lever is operated to control the direction for turning. The valve is switched to supply pressure oil to the turning hydraulic motor 7 to turn the blade 9 together with the turning circle 6. However, since the left and right ends of the blade 9 move in an arc, the left and right ends of the blade 9 move. The position differs before and after turning, that is, when the propelling angle of the blade is changed, and the left and right ends of the blade 9 collide with an obstacle such as a curb during ground leveling work on the shoulder portion of the guideway. There is.
【０００５】このことを防止するには、他の操作レバー
を操作してブレードシフト用の方向制御弁を切換えてシ
フトシリンダ１０を伸縮することでブレード９を旋回サ
ークル６に対して左右に移動すれば良いが、このように
するには２本の操作レバーを微少に操作する必要があっ
て大変面倒である。In order to prevent this, the blade 9 is moved left and right with respect to the turning circle 6 by operating the other operating lever to switch the directional control valve for blade shift to expand and contract the shift cylinder 10. It's good, but to do this, it's very troublesome to operate the two control levers minutely.
【０００６】そこで、本発明は前述の課題を解決できる
ようにしたモータグレーダのブレード旋回操作装置を提
供することを目的とする。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a blade turning operation device for a motor grader which can solve the above-mentioned problems.
【０００７】[0007]
【課題を解決するための手段】車体１にドローバ２を左
右昇降シリンダ３，４で上下揺動自在に支承し、このド
ローバ２と車体１に亘って横送りシリンダ５を連結し、
前記旋回サークル６を旋回油圧モータ７で旋回可能に取
付け、この旋回サークル６にブレード９をシフトシリン
ダ１０で左右移動自在に設けたモータグレーダにおい
て、ブレード旋回信号を出力する操作部材と、前記旋回
油圧モータ７に圧油を供給する第１の弁と、前記シフト
シリンダ１０に圧油を供給する第２の弁と、前記ブレー
ド９の旋回角を検出する手段と、前記ブレード９の左右
移動量を演算する手段と、前記操作部材のブレード旋回
信号とブレード旋回角とブレード移動量に基づいてブレ
ード９を旋回すると同時に旋回角に応じたストロークだ
け左右移動すべく前記第１、第２の弁に切換え信号を出
力する機能を有するコントローラ２６を設けたモータグ
レーダのブレード旋回操作装置。[Means for Solving the Problems] A drawbar 2 is supported on a vehicle body 1 so as to be vertically swingable by left and right lifting cylinders 3 and 4, and a transverse feed cylinder 5 is connected across the drawbar 2 and the vehicle body 1.
In a motor grader in which the turning circle 6 is rotatably attached by a turning hydraulic motor 7, and a blade 9 is movably provided in the turning circle 6 by a shift cylinder 10, the operating member for outputting a blade turning signal and the turning hydraulic A first valve for supplying pressure oil to the motor 7, a second valve for supplying pressure oil to the shift cylinder 10, a unit for detecting a turning angle of the blade 9, and a lateral movement amount of the blade 9 are set. The first and second valves are switched so as to rotate the blade 9 based on the blade rotation signal of the operation member, the blade rotation angle, and the blade movement amount, and at the same time move the blade 9 left and right by a stroke corresponding to the rotation angle. A blade turning operation device of a motor grader provided with a controller 26 having a function of outputting a signal.
【０００８】[0008]
【作 用】操作部材を操作してブレード旋回信号を出
力することで旋回油圧モータ７とシフトシリンダ１０が
作動してブレード９を旋回すると同時に、その旋回角に
見合うだけブレード９をサークル６に対して左右に移動
するから、１つの操作部材を操作することでブレード９
を左右端一定で左右旋回でき、ブレード９の推進角を変
更する時にブレード９が左右に移動して縁石等に衝突す
ることがないし、このブレード９の旋回操作が簡単とな
る。[Operation] The turning hydraulic motor 7 and the shift cylinder 10 operate to turn the blade 9 by operating the operating member to output the blade turning signal, and at the same time, the blade 9 is moved relative to the circle 6 by the amount corresponding to the turning angle. Move left and right by operating one operating member.
Can be turned left and right with the left and right ends being constant, and when changing the propulsion angle of the blade 9, the blade 9 does not move left and right and collide with a curb or the like, and the turning operation of the blade 9 is simplified.
【０００９】[0009]
【実 施 例】図２に示すように、前記図１に示すモー
タグレーダの運転室２０の座席２１の左右には操作部
材、例えば第１操作レバー２２と第２操作レバー２３が
設けてあり、座席２１の前方にハンドル２４が設けてあ
る。なお、左右操作レバー２２，２３はハンドル２４の
支持部材２５の左右両側に取付けても良い。前記第１、
第２操作レバー２２，２３は前後方向及び左右方向並び
に斜め前後左右方向に傾倒操作可能となり、その操作ス
トロークに比例した電気信号を出力する。つまり、第１
・第２操作レバー２２，２３を操作するとポテンション
メータが回転されてその操作方向に応じ、かつ操作スト
ロークに比例した電気信号を出力する。[Examples] As shown in FIG. 2, operating members such as a first operating lever 22 and a second operating lever 23 are provided on the left and right sides of a seat 21 of a driver's cab 20 of the motor grader shown in FIG. A handle 24 is provided in front of the seat 21. The left and right operation levers 22 and 23 may be attached to both left and right sides of the support member 25 of the handle 24. The first,
The second operation levers 22 and 23 can be tilted in the front-rear direction, the left-right direction, and the oblique front-rear left-right direction, and output an electric signal proportional to the operation stroke. That is, the first
When the second operation levers 22 and 23 are operated, the potentiometer is rotated to output an electric signal according to the operation direction and in proportion to the operation stroke.
【００１０】前記第１・第２操作レバー２２，２３の出
力信号は図３に示すようにコントローラ２６に入力さ
れ、このコントローラ２６には切換えスイッチ２７より
ＯＮ、ＯＦＦ信号が入力されると共に、傾斜センサ２８
より車体傾斜角信号が入力され、回転センサ２９より旋
回サークル回転角信号が入力され、コントローラ２６は
入力された信号に基づいて各シリンダ、旋回油圧モータ
に圧油を供給する方向制御弁、例えば比例電磁弁３０の
ソレノイドに電気信号を出力すると共に、表示パネル３
１に信号を送って作動状況等を表示する。The output signals of the first and second operating levers 22 and 23 are input to a controller 26 as shown in FIG. 3, and an ON / OFF signal is input to the controller 26 from a changeover switch 27 and tilting is performed. Sensor 28
The vehicle body inclination angle signal is input from the rotation sensor 29, the turning circle rotation angle signal is input from the rotation sensor 29, and the controller 26 supplies a pressure oil to each cylinder and the turning hydraulic motor based on the input signal. An electric signal is output to the solenoid of the solenoid valve 30 and the display panel 3
It sends a signal to 1 to display the operating status.
【００１１】図４は油圧回路図であり、前記比例電磁弁
３０は左昇降シリンダ３に圧油を供給する第１比例電磁
弁３０−１、右昇降シリンダ４に圧油を供給する第２比
例電磁弁３０−２、横送りシリンダ５に圧油を供給する
第３比例電磁弁３０−３、シフトシリンダ１０に圧油を
供給する第４比例電磁弁３０−４、ステアリングシリン
ダ３２に圧油を供給する第５比例電磁弁３０−５、リー
ニングシリンダ３３に圧油を供給する第６比例電磁弁３
０−６、スカリファイヤ用シリンダ３４に圧油を供給す
る第７比例電磁弁３０−７、旋回油圧モータ７に圧油を
供給する第８比例電磁弁３０−８を備え、第１〜第８比
例電磁弁３０−１〜３０−８にコントローラ２６より通
電信号を送って切換えることで油圧ポンプ３５の吐出圧
油を各シリンダ、旋回油圧モータ７に供給する。なお、
前記第１〜第８比例電磁弁３０−１〜３０−８は通電量
に比例したストロークだけ切換えられて開口面積（供給
面積）が通電量に比例するようにしてある。FIG. 4 is a hydraulic circuit diagram, wherein the proportional solenoid valve 30 is a first proportional solenoid valve 30-1 for supplying pressure oil to the left lift cylinder 3 and the second proportional solenoid is for supplying pressure oil to the right lift cylinder 4. The solenoid valve 30-2, the third proportional solenoid valve 30-3 that supplies pressure oil to the lateral feed cylinder 5, the fourth proportional solenoid valve 30-4 that supplies pressure oil to the shift cylinder 10, and the steering cylinder 32 are supplied with pressure oil. A fifth proportional solenoid valve 30-5 for supplying and a sixth proportional solenoid valve 3 for supplying pressure oil to the leaning cylinder 33.
0-6, a seventh proportional solenoid valve 30-7 for supplying pressure oil to the scarifier cylinder 34, and an eighth proportional solenoid valve 30-8 for supplying pressure oil to the swing hydraulic motor 7 are provided. The controller 26 sends an energization signal to the proportional solenoid valves 30-1 to 30-8 to switch the proportional solenoid valves 30-1 to 30-8, thereby supplying the pressure oil discharged from the hydraulic pump 35 to each cylinder and the swing hydraulic motor 7. In addition,
The first to eighth proportional solenoid valves 30-1 to 30-8 are switched by a stroke proportional to the energization amount so that the opening area (supply area) is proportional to the energization amount.
【００１２】前記第１操作レバー２２は図５に示すよう
に前・後・左・右・右前・右後・左前・左後に操作さ
れ、その操作ストロークに比例した電気信号を図６に示
すように出力する。この第１操作レバー２２の出力した
電気信号はコントローラ２６に送られて切換えスイッチ
２７のＯＮ、ＯＦＦ信号によって操作パターンを判定し
て出力信号の組合わせを選択する。As shown in FIG. 5, the first operating lever 22 is operated to the front, rear, left, right, right front, right rear, left front, left rear, and an electric signal proportional to the operation stroke is shown in FIG. Output to. The electric signal output from the first operation lever 22 is sent to the controller 26, and the operation pattern is determined by the ON / OFF signal of the changeover switch 27 to select the combination of output signals.
【００１３】次にブレード９を旋回動作する操作を説明
する。 （１）ブレード右端一定で左旋回する時。 第１操作レバー２２を右前に操作するとコントローラ２
６に左旋回信号が入力されて第８比例電磁弁３０−８に
左旋回信号を出力して左旋回位置ａとして旋回油圧モー
タ７が左回転してサークル６とともにブレード９が左旋
回する。これと同時にコントローラ２６より第４比例電
磁弁３０−４に伸長信号が出力されて伸長位置ｂとな
り、シフトシリンダ１０が伸長してブレード９をサーク
ル６に対して右方に移動するから図７（ａ）に示すよう
にブレード９の右端９ａが一定で左旋回する。Next, the operation of turning the blade 9 will be described. (1) When turning left with a constant right edge of the blade. When the first operation lever 22 is operated to the front right, the controller 2
The left turning signal is input to 6 and the left turning signal is output to the eighth proportional solenoid valve 30-8 to set the left turning position a, and the turning hydraulic motor 7 rotates left and the blade 9 turns left together with the circle 6. At the same time, the controller 26 outputs an extension signal to the fourth proportional solenoid valve 30-4 to reach the extension position b, the shift cylinder 10 extends and the blade 9 moves to the right with respect to the circle 6, so that FIG. As shown in a), the right end 9a of the blade 9 is constant and turns left.
【００１４】前記ブレード９の右方移動量はブレード９
の旋回角θ（つまりサークル６の旋回角θ）とブレード
９の旋回中心６ａから右端９ａまでの長さＬによって決
定されるので、サークル６の旋回角θを検出するセン
サ、例えば旋回油圧モータ７にパルスエンコーダとその
出力パルスによってサークル旋回角θを演算する演算器
より成る回転センサ２９を設け、その旋回角θと前記長
さＬによってブレード９ａの右方移動量を算出し、ブレ
ード９の移動量を検出するセンサ３２、例えばシフトシ
リンダ１０のストロークセンサ又はブレード９の移動に
より作動するリニアポテンションメータを設け、ブレー
ド９の実移動量が前述の算出した移動量と合致した時に
第４比例電磁弁３０−４への伸長信号を中止する。The amount of movement of the blade 9 to the right is determined by the blade 9
Is determined by the turning angle θ of the circle 6 (that is, the turning angle θ of the circle 6) and the length L from the turning center 6a of the blade 9 to the right end 9a. Therefore, a sensor that detects the turning angle θ of the circle 6, for example, the turning hydraulic motor 7 Is provided with a rotation sensor 29 composed of a pulse encoder and a calculator for calculating the circle turning angle θ by the output pulse thereof, and the rightward movement amount of the blade 9a is calculated by the turning angle θ and the length L to move the blade 9. A sensor 32 for detecting the amount, for example, a stroke sensor of the shift cylinder 10 or a linear potentiometer that operates by the movement of the blade 9 is provided, and when the actual movement amount of the blade 9 matches the movement amount calculated above, the fourth proportional electromagnetic Stop the extension signal to valve 30-4.
【００１５】（２）ブレード右端一定で右旋回する時。 第１操作レバー２２を右後に操作するとコントローラ２
６に右旋回信号が入力されて第８比例電磁弁３０−８に
左旋回信号を出力して右旋回位置ｃとして旋回油圧モー
タ７が左回転してサークル６とともにブレード９が右旋
回する。これと同時にコントローラ２６より第４比例電
磁弁３０−４に伸長信号が出力されて伸長位置ｂとな
り、シフトシリンダ１０が伸長してブレード９をサーク
ル６に対して右方に移動するから図７（ｂ）に示すよう
にブレード９の右端９ａが一定で右旋回する。この時の
前記ブレード９の右方移動量は前述と同様とする。(2) When turning right with a constant right end of the blade. When the first operation lever 22 is operated to the right rear, the controller 2
A right turn signal is input to 6 and a left turn signal is output to the eighth proportional solenoid valve 30-8 to set the right turn position c to turn the turning hydraulic motor 7 to the left to turn the blade 9 together with the circle 6 to the right. To do. At the same time, the controller 26 outputs an extension signal to the fourth proportional solenoid valve 30-4 to reach the extension position b, and the shift cylinder 10 extends to move the blade 9 to the right with respect to the circle 6, so that FIG. As shown in b), the right end 9a of the blade 9 is constant and turns right. The amount of rightward movement of the blade 9 at this time is the same as described above.
【００１６】（３）ブレード左端一定で右旋回する時。 第１操作レバー２２を左前に操作するとコントローラ２
６に右旋回信号が入力されて第８比例電磁弁３０−８に
右旋回信号を出力して左旋回位置ｃとして旋回油圧モー
タ７が右回転してサークル６とともにブレード９が右旋
回する。これと同時にコントローラ２６より第４比例電
磁弁３０−４に縮小信号が出力されて縮小位置ｄとな
り、シフトシリンダ１０が縮小してブレード９をサーク
ル６に対して左方に移動するから図７（ｃ）に示すよう
にブレード９の左端９ｂが一定で右旋回する。この時前
記ブレード９の右方移動量は前述と同様にする。(3) When turning to the right with a constant left end of the blade. When the first operation lever 22 is operated to the left front, the controller 2
A right turn signal is input to 6 and a right turn signal is output to the eighth proportional solenoid valve 30-8 to set the left turn position c to turn the turning hydraulic motor 7 to the right so that the blade 9 turns to the right along with the circle 6. To do. At the same time, a reduction signal is output from the controller 26 to the fourth proportional solenoid valve 30-4 to the reduction position d, the shift cylinder 10 is reduced, and the blade 9 is moved to the left with respect to the circle 6, as shown in FIG. As shown in c), the left end 9b of the blade 9 is constant and turns right. At this time, the amount of rightward movement of the blade 9 is the same as that described above.
【００１７】（４）ブレード左端一定で左旋回する時。 第１操作レバー２２を右後に操作するとコントローラ２
６に左旋回信号が入力されて第８比例電磁弁３０−８に
左旋回信号を出力して左旋回位置ａとして旋回油圧モー
タ７が左回転してサークル６とともにブレード９が左旋
回する。これと同時にコントローラ２６より第４比例電
磁弁３０−４に縮小信号が出力されて伸長位置ｄとな
り、シフトシリンダ１０が縮小してブレード９をサーク
ル６に対して左方に移動するから図７（ｄ）に示すよう
にブレード９の左端９ｂが一定で左旋回する。この時前
記ブレード９の右方移動量は前述と同様とする。(4) When turning left with a constant left end of the blade. When the first operation lever 22 is operated to the right rear, the controller 2
The left turning signal is input to 6 and the left turning signal is output to the eighth proportional solenoid valve 30-8 to set the left turning position a, and the turning hydraulic motor 7 rotates left and the blade 9 turns left together with the circle 6. At the same time, a reduction signal is output from the controller 26 to the fourth proportional solenoid valve 30-4 to reach the extended position d, the shift cylinder 10 is reduced and the blade 9 is moved to the left with respect to the circle 6, so that FIG. As shown in d), the left end 9b of the blade 9 is constant and turns left. At this time, the amount of rightward movement of the blade 9 is the same as that described above.
【００１８】次に操作部材の他の実施例を説明する。図
８は第２実施例を示し、第１操作部材５０と第２操作部
材６０を複数の押釦スイッチを有する押し釦タイプとし
てある。つまり、第１操作部材５０は矩形状の本体５１
の左前隅角部５１ａ寄りに左前押釦スイッチ５２、右前
隅角度５１ｂ寄りに右前押釦スイッチ５３、左後隅角部
５１ｃ寄りに左後押釦スイッチ５４、右後隅角部５１ｄ
寄りに右後押釦スイッチ５５をそれぞれ設け、前記本体
５１の左右中間前部５１ｅ寄りに前押釦スイッチ５６、
左右中間後部５１ｆ寄りに後押釦スイッチ５７、前後中
間左部５１ｇ寄りに左押釦スイッチ５８、前後中間右部
５１ｈ寄りに右押釦スイッチ５９をそれぞれ設けてあ
る。Next, another embodiment of the operating member will be described. FIG. 8 shows the second embodiment, and the first operating member 50 and the second operating member 60 are of a push button type having a plurality of push button switches. That is, the first operating member 50 is the rectangular main body 51.
Left front push button switch 52 near the left front corner corner 51a, right front push button switch 53 near the right front corner angle 51b, left rear push button switch 54, right rear corner corner 51d near the left rear corner corner 51c.
Right rear push-button switches 55 are provided near each other, and front push-button switches 56 are provided near the left and right middle front portions 51e of the main body 51.
A rear push button switch 57 is provided near the left-right intermediate rear portion 51f, a left push button switch 58 is provided near the front-rear intermediate left portion 51g, and a right push button switch 59 is provided near the front-rear intermediate right portion 51h.
【００１９】前記各押釦スイッチは押すことで電気信号
を出力すると共に、その出力電気信号のレベルは押し続
ける時間に比例して順次大きくなり、この左操作部材５
０は前述の第１操作レバー２２と同様の機能を有する。
なお、その各押釦スイッチはＯＮ、ＯＦＦ的な機能とし
ても良い。When each of the push button switches is pressed, an electric signal is output, and the level of the output electric signal gradually increases in proportion to the length of time the button is kept pressed.
0 has the same function as the first operation lever 22 described above.
The push button switches may have ON and OFF functions.
【００２０】前記各押釦スイッチは三角形状となって各
隅角部と隣接する押釦スイッチ間にそれぞれ配設されて
いるので、小さな本体５１に各押釦スイッチを効率良く
配設できてコンパクトになるし、各押釦スイッチの位置
によってその押釦スイッチの機能、つまり作動するアク
チュエータの種類を容易に判別できてオペレータの操作
性を向上できる。Since each of the push button switches has a triangular shape and is arranged between the corner portions and the push button switches adjacent to each other, the push button switches can be efficiently arranged in the small main body 51, which is compact. The function of the push button switch, that is, the type of the actuator to be operated can be easily determined by the position of each push button switch, and the operability of the operator can be improved.
【００２１】前記第２操作部材６０は矩形状の本体６１
の左右中間部前部６１ａ寄りに前押釦スイッチ６２、左
右中間部後部６１ｂ寄りに後押釦スイッチ６３、前後中
間左部６１ｃ寄りに左押釦スイッチ６４、前後中間右部
６１ｄ寄りに右押釦スイッチ６５がそれぞれ設けてあ
る。The second operating member 60 is a rectangular main body 61.
A front push button switch 62 near the left and right middle part front part 61a, a rear push button switch 63 near the left and right middle part rear part 61b, a left push button switch 64 near the front and rear middle left part 61c, and a right push button switch 65 near the front and rear middle right part 61d. Each is provided.
【００２２】前記各押釦スイッチは押すことで電気信号
を出力すると共に、その出力電気のレベルは押し続ける
時間に比例して順次大きくなり、この右操作部材６０は
前述の第２操作レバー２３と同様な機能を有する。な
お、各押釦スイッチはＯＮ、ＯＦＦ的な機能としても良
い。When each of the push button switches is pressed, an electric signal is output, and the level of the output electricity gradually increases in proportion to the length of time the button is kept pressed. The right operation member 60 is the same as the second operation lever 23 described above. It has various functions. Each push button switch may have an ON / OFF function.
【００２３】図９は第３実施例を示し、第１操作部材５
０の本体５１を左右方向に長尺で弯曲した形状とし、こ
の本体５１に左押釦スイッチ５８、右押釦スイッチ５
９、後押釦スイッチ５７、前押釦スイッチ５６、左後押
釦スイッチ５４、左前押釦スイッチ５２、右後押釦スイ
ッチ５５、右前押釦スイッチ５３を左から順次並べて設
けてある。FIG. 9 shows a third embodiment, in which the first operating member 5
The main body 51 of 0 has a shape curved in the left-right direction in a long shape, and a left push button switch 58 and a right push button switch 5 are attached to the main body 51.
9, a rear push button switch 57, a front push button switch 56, a left rear push button switch 54, a left front push button switch 52, a right rear push button switch 55, and a right front push button switch 53 are sequentially arranged from the left.
【００２４】第２操作部材６０の本体６１を左右方向に
長尺で弯曲した形状とし、この本体６１に前押釦スイッ
チ６２、後押釦スイッチ６３、右押釦スイッチ６５、左
押釦スイッチ６４を左から順次並べて設けてある。The main body 61 of the second operating member 60 is formed in a shape that is bent in the left-right direction in a long shape, and a front push button switch 62, a rear push button switch 63, a right push button switch 65, and a left push button switch 64 are sequentially arranged from the left on this main body 61. They are arranged side by side.
【００２５】このようにすれば、第１操作部材５０と第
２操作部材５１を座席２１の左右に接近して配設できる
から、オペレータから各押釦スイッチまでの距離が短く
なって操作し易くなる。In this way, since the first operating member 50 and the second operating member 51 can be arranged close to the left and right of the seat 21, the distance from the operator to each push button switch is shortened and the operation is facilitated. .
【００２６】図１０は第４実施例を示し、第１操作部材
５０の本体５１を左右方向に長い長方形状とし、その本
体５１に後押釦スイッチ５７、左押釦スイッチ５８、右
押釦スイッチ５９、左後押釦スイッチ５４、右後押釦ス
イッチ５５を左から右に順次並べて設け、後押釦スイッ
チ５７と左押釦スイッチ５８の間の前部寄りに前押釦ス
イッチ５６を設け、右押釦スイッチ５９と左後押釦スイ
ッチ５４との間の前部寄りに左前押釦スイッチ５２を設
け、右後押釦スイッチ５５の右前部寄りに右前押釦スイ
ッチ５３を設けてあり、このようにすれば左手によって
ピアノを弾くような感じで押釦スイッチを操作できる。FIG. 10 shows a fourth embodiment, in which a main body 51 of the first operating member 50 is formed in a rectangular shape elongated in the left-right direction, and a rear push button switch 57, a left push button switch 58, a right push button switch 59, a left side are provided on the main body 51. A rear push button switch 54 and a right rear push button switch 55 are sequentially arranged from left to right, a front push button switch 56 is provided near the front part between the rear push button switch 57 and the left push button switch 58, and a right push button switch 59 and a left rear push button. A left front push-button switch 52 is provided near the front of the switch 54, and a right front push-button switch 53 is provided near the right front of the right rear push-button switch 55. In this way, the player feels like playing a piano with his left hand. The push button switch can be operated.
【００２７】図１０に示すように、第２操作部材６０の
本体６１を左右方向に長い長方形状とし、その本体６１
に後押釦スイッチ６３、左押釦スイッチ６４、右押釦ス
イッチ６５を左から順次並べて設け、後押釦スイッチ６
３と左押釦スイッチ６４との間の前部寄りに前押釦スイ
ッチ６２が設けてあり、このようにすれば右手によって
ピアノを弾くように押釦スイッチを操作できる。これら
の操作部材によりブレードを旋回する場合には第１操作
部材５０の右前押釦スイッチ５３、右後押釦スイッチ５
５を操作して信号をコントローラ２６に入力すれば良
い。As shown in FIG. 10, the main body 61 of the second operating member 60 is formed in a rectangular shape elongated in the left-right direction, and the main body 61 is formed.
A rear push button switch 63, a left push button switch 64, and a right push button switch 65 are sequentially arranged from the left side on the rear push button switch 6
A front push button switch 62 is provided near the front portion between the left push button switch 3 and the left push button switch 64. In this way, the push button switch can be operated by playing the piano with the right hand. When the blade is turned by these operation members, the right front push button switch 53, the right rear push button switch 5 of the first operation member 50.
5 may be operated to input a signal to the controller 26.
【００２８】図１１は第５実施例を示し、第１操作部材
５０の本体５１を左右方向に長い長方形状とし、その本
体５１に第１・第２・第３・第４押釦７０，７１，７
２，７３を左から順次並べて設け、この第１・第２・第
３・第４スイッチ７０，７１，７２，７３は前後中間を
支点として揺動自在となり、第１スイッチ７０の前部７
０ａを押すと左前信号を出力し、後部７０ｂを押すと左
後信号を出力し、同様に第２スイッチ７１の前部７１ａ
を押すと前信号、後部７１ｂを押すと後信号を出力し、
第３スイッチ７２の前部７２ａを押すと左信号、後部７
２ｂを押すと右信号を出力し、第４スイッチ７３の前部
７３ａを押すと右前信号、後部７３ｂを押すと右後信号
を出力し、第１・第２・第３・第４スイッチ７０，７
１，７２，７３はシーソースイッチとなっている。FIG. 11 shows a fifth embodiment, in which the main body 51 of the first operating member 50 has a rectangular shape elongated in the left-right direction, and the main body 51 has first, second, third and fourth push buttons 70, 71, 7
2, 73 are arranged side by side from the left, and the first, second, third, and fourth switches 70, 71, 72, 73 are swingable about the front and rear intermediate points, and the front portion 7 of the first switch 70 is movable.
When 0a is pressed, a front left signal is output, and when the rear portion 70b is pressed, a rear left signal is output. Similarly, the front portion 71a of the second switch 71 is output.
Press to output the front signal, and press the rear part 71b to output the rear signal.
When the front portion 72a of the third switch 72 is pressed, the left signal, the rear portion 7
When 2b is pressed, the right signal is output, when the front part 73a of the fourth switch 73 is pressed, the right front signal is output, and when the rear part 73b is pressed, the right rear signal is output, and the first, second, third and fourth switches 70, 7
1, 72 and 73 are seesaw switches.
【００２９】第２操作部材６０の本体６１に第１・第２
スイッチ７４，７５を設け、この第１・第２スイッチ７
４，７５は前後中間を支点として揺動自在となり、第１
スイッチ７４の前部７４ａを押すと前信号を出力し、後
部７４ｂを押すと後信号を出力するシーソースイッチと
なり、第２スイッチ７５の前部７５ａを押すと左信号、
後部７５ｂを押すと右信号を出力するシーソースイッチ
となっている。この操作部材によりブレードを旋回する
には第４スイッチ７３の前部７３ａ、後部７３ｂを押し
て右前信号、右後信号をコントローラ２６に入力すれば
良い。The main body 61 of the second operating member 60 is provided with the first and second
The switches 74 and 75 are provided, and the first and second switches 7
4 and 75 can swing freely around the middle of the front and rear,
When the front portion 74a of the switch 74 is pressed, a front signal is output, and when the rear portion 74b is pressed, the seesaw switch outputs a rear signal. When the front portion 75a of the second switch 75 is pressed, a left signal is output.
It is a seesaw switch that outputs a right signal when the rear part 75b is pressed. To turn the blade with this operation member, the front portion 73a and the rear portion 73b of the fourth switch 73 may be pressed to input the front right signal and the rear right signal to the controller 26.
【００３０】次に方向切換弁の他の実施例を説明する。
以上の実施例では方向制御弁を比例電磁弁としたが、図
１２に示すように、パイロット圧で切換作動するパイロ
ット式切換弁８０と、そのパイロット式切換弁８０のパ
イロット圧受部８１にパイロット圧を供給する比例電磁
圧力制御弁８２とにより方向制御弁とし、その比例電磁
弁圧力制御弁８２のソレノイド８３にコントローラ２６
より通電してパイロット切換弁８０の開度をその通電量
に比例した値とするようにしても良い。Next, another embodiment of the directional control valve will be described.
In the above embodiment, the directional control valve is a proportional solenoid valve, but as shown in FIG. 12, the pilot pressure is applied to the pilot type switching valve 80 and the pilot pressure receiving portion 81 of the pilot type switching valve 80. To the solenoid 26 of the proportional solenoid valve pressure control valve 82.
Alternatively, the opening of the pilot switching valve 80 may be set to a value proportional to the amount of energization by further energizing.
【００３１】[0031]
【発明の効果】操作部材を操作してブレード旋回信号を
出力することで旋回油圧モータ７とシフトシリンダ１０
が作動してブレード９を旋回すると同時に、その旋回角
に見合うだけブレード９をサークル６に対して左右に移
動するから、１つの操作部材を操作することでブレード
９を左右端一定で左右旋回でき、ブレード９の推進角を
変更する時にブレード９が左右に移動して縁石等に衝突
することがないし、このブレード９の旋回操作が簡単と
なる。The turning hydraulic motor 7 and the shift cylinder 10 are operated by operating the operating member to output a blade turning signal.
Is activated and the blade 9 is turned, and at the same time, the blade 9 is moved left and right with respect to the circle 6 as much as the turning angle, so that the blade 9 can be turned left and right at a constant left and right end by operating one operating member. When the propulsion angle of the blade 9 is changed, the blade 9 does not move to the left and right to collide with a curb or the like, and the turning operation of the blade 9 becomes easy.
【図１】モータグレーダの側面図である。FIG. 1 is a side view of a motor grader.
【図２】本発明の操作装置を備えた運転室の斜視図であ
る。FIG. 2 is a perspective view of a driver's cab provided with the operating device of the present invention.
【図３】操作装置の斜視図である。FIG. 3 is a perspective view of an operating device.
【図４】油圧回路図である。FIG. 4 is a hydraulic circuit diagram.
【図５】左操作レバーの操作方向説明図である。FIG. 5 is an explanatory diagram of an operation direction of a left operation lever.
【図６】ストロークと出力信号の関係を示す図表であ
る。FIG. 6 is a chart showing a relationship between a stroke and an output signal.
【図７】ブレードの旋回動作説明図である。FIG. 7 is a diagram for explaining the turning operation of the blade.
【図８】操作部材の第２実施例の説明図である。FIG. 8 is an explanatory diagram of a second embodiment of the operating member.
【図９】操作部材の第３実施例の説明図である。FIG. 9 is an explanatory diagram of a third embodiment of the operating member.
【図１０】操作部材の第４実施例の説明図である。FIG. 10 is an explanatory diagram of a fourth embodiment of the operating member.
【図１１】操作部材の第５実施例の説明図である。FIG. 11 is an explanatory diagram of a fifth embodiment of the operation member.
【図１２】方向制御弁の他の例を示す説明図である。FIG. 12 is an explanatory view showing another example of the directional control valve.
１…車体、２…ドローバ、６…サークル、７…旋回油圧
モータ、９…ブレード、１０…シフトシリンダ、２２…
第１操作レバー、３０−４…第４比例電磁弁、３０−８
…第８比例電磁弁。1 ... Body, 2 ... Drawbar, 6 ... Circle, 7 ... Swing hydraulic motor, 9 ... Blade, 10 ... Shift cylinder, 22 ...
1st operation lever, 30-4 ... 4th proportional solenoid valve, 30-8
… Eighth proportional solenoid valve.
Claims (6)
３，４で上下揺動自在に支承し、このドローバ２と車体
１に亘って横送りシリンダ５を連結し、前記旋回サーク
ル６を旋回油圧モータ７で旋回可能に取付け、この旋回
サークル６にブレード９をシフトシリンダ１０で左右移
動自在に設けたモータグレーダにおいて、 ブレード旋回信号を出力する操作部材と、前記旋回油圧
モータ７に圧油を供給する第１の弁と、前記シフトシリ
ンダ１０に圧油を供給する第２の弁と、前記ブレード９
の旋回角を検出する手段と、前記ブレード９の左右移動
量を演算する手段と、 前記操作部材のブレード旋回信号とブレード旋回角とブ
レード移動量に基づいてブレード９を旋回すると同時に
旋回角に応じたストロークだけ左右移動すべく前記第
１、第２の弁に切換え信号を出力する機能を有するコン
トローラ２６を設けたモータグレーダのブレード旋回操
作装置。1. A drawbar 2 is supported on a vehicle body 1 so as to be swingable up and down by left and right lifting cylinders 3 and 4, a transverse feed cylinder 5 is connected across the drawbar 2 and the vehicle body 1, and the turning circle 6 is turned by a turning hydraulic pressure. In a motor grader in which a motor 9 is mounted so that it can be swung, and a blade 9 is movably provided on the swivel circle 6 by a shift cylinder 10, the operating member for outputting a blade swivel signal and pressure oil are supplied to the swivel hydraulic motor 7. First valve, a second valve for supplying pressure oil to the shift cylinder 10, and the blade 9
Means for detecting the turning angle of the blade 9, means for calculating the lateral movement amount of the blade 9, and turning the blade 9 based on the blade turning signal of the operating member, the blade turning angle, and the blade moving amount, and at the same time depending on the turning angle. A blade turning operation device for a motor grader provided with a controller 26 having a function of outputting a switching signal to the first and second valves so as to move right and left by a stroke.
作可能で操作方向と操作ストロークに比例信号を出力す
る操作レバーとした請求項１記載のモータグレーダのブ
レード旋回操作装置。2. The blade turning operation device for a motor grader according to claim 1, wherein the operation member is an operation lever that can be operated in any of front-back and left-right directions and outputs a proportional signal to an operation direction and an operation stroke.
記載のモータグレーダのブレード旋回操作装置。3. The switch according to claim 1, wherein the operation member is a switch.
A blade turning operation device for the motor grader described.
載のモータグレーダのブレード旋回操作装置。4. The blade turning operation device for a motor grader according to claim 1, wherein the valve is a proportional solenoid valve.
磁圧力制御弁とした請求項１記載のモータグレーダのブ
レード旋回操作装置。5. The blade turning operation device for a motor grader according to claim 1, wherein the valve is a pilot type switching valve and a proportional electromagnetic pressure control valve.
クル６を旋回油圧モータ７で旋回可能に取付け、この旋
回サークル６にブレード９をシフトシリンダ１０で左右
移動自在に設けたモータグレーダにおいて、 ブレード旋回信号を出力する操作部材と、前記旋回油圧
モータ７に圧油を供給する第１の比例電磁弁と、前記シ
フトシリンダ１０に圧油を供給する第２の比例電磁弁
と、前記ブレード９の旋回角を検出する手段と、前記ブ
レード９の左右移動量を演算する手段と、前記操作部材
の信号とブレード旋回角とブレード移動量に基づいて第
１・第２の比例電磁弁を切換えてブレード９を旋回する
と同時に旋回角に応じたストロークだけ左右移動するコ
ントローラ２６を設けた請求項１記載のモータグレーダ
のブレード旋回操作装置。6. A motor grader in which a swing circle 6 is rotatably attached to a drawbar 2 supported on a vehicle body 1 by a swing hydraulic motor 7, and a blade 9 is provided on the swing circle 6 by a shift cylinder 10 so as to be movable left and right. An operating member that outputs a swing signal, a first proportional solenoid valve that supplies pressure oil to the swing hydraulic motor 7, a second proportional solenoid valve that supplies pressure oil to the shift cylinder 10, and a blade 9 A means for detecting a turning angle, a means for calculating a lateral movement amount of the blade 9, a blade by switching the first and second proportional solenoid valves based on the signal of the operating member, the blade turning angle and the blade movement amount. The blade turning operation device for a motor grader according to claim 1, further comprising a controller (26) that moves right and left by a stroke corresponding to a turning angle when turning the blade (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29628693A JP3197722B2 (en) | 1992-11-30 | 1993-11-26 | Motor grader blade turning operation device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4-320319 | 1992-11-30 | ||
| JP32031992 | 1992-11-30 | ||
| JP29628693A JP3197722B2 (en) | 1992-11-30 | 1993-11-26 | Motor grader blade turning operation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06212658A true JPH06212658A (en) | 1994-08-02 |
| JP3197722B2 JP3197722B2 (en) | 2001-08-13 |
Family
ID=26560612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29628693A Expired - Fee Related JP3197722B2 (en) | 1992-11-30 | 1993-11-26 | Motor grader blade turning operation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3197722B2 (en) |
-
1993
- 1993-11-26 JP JP29628693A patent/JP3197722B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3197722B2 (en) | 2001-08-13 |
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