JPH0899649A - Maneuvering device for hydraulically operared vehicle - Google Patents
Maneuvering device for hydraulically operared vehicleInfo
- Publication number
- JPH0899649A JPH0899649A JP25926494A JP25926494A JPH0899649A JP H0899649 A JPH0899649 A JP H0899649A JP 25926494 A JP25926494 A JP 25926494A JP 25926494 A JP25926494 A JP 25926494A JP H0899649 A JPH0899649 A JP H0899649A
- Authority
- JP
- Japan
- Prior art keywords
- speed change
- steering
- levers
- hydraulic
- traveling
- 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
- Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (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、車輪やクローラからな
る左右の走行装置を左右油圧変速装置で駆動し、左右の
走行装置の走行方向と走行速度を各別に変えることで操
向する油圧駆動車の操縦装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic drive system in which a left and right traveling device composed of wheels and crawlers is driven by a left and right hydraulic transmission, and the traveling direction and traveling speed of the left and right traveling devices are respectively changed to steer the vehicle. Car control device.
【０００２】[0002]
【従来の技術】油圧駆動車は、油圧ポンプと油圧モータ
からなる油圧変速機（ＨＳＴ）を左右の走行装置の駆動
部にそれぞれ設け、油圧ポンプの吐出量を変える斜板を
取り付けた変速軸の回動角度を変更することで走行装置
の走行方向と走行速度を変え、直進、旋回、停止を選択
するようにしている。そして、左右の走行装置を駆動す
る場合には油圧変速機の変速軸を回動して油圧ポンプの
斜板をオイルが送り出されるように開き油圧モータへオ
イルを送り出すようになるため、走行時の負荷によりオ
イルで斜板を閉じるような力が変速軸に加わり、変速軸
を一定回動角度に保持していないと変速軸が中立位置に
戻り走行を停止する。このため、油圧変速機の変速軸を
回動する操向変速レバーには、変速位置を保持する回動
位置保持機構を設けている。2. Description of the Related Art In a hydraulically driven vehicle, a hydraulic transmission (HST) consisting of a hydraulic pump and a hydraulic motor is provided in each of the drive units of the left and right traveling devices, and a swash plate for changing the discharge amount of the hydraulic pump is attached to a transmission shaft. By changing the rotation angle, the traveling direction and traveling speed of the traveling device are changed to select straight traveling, turning, or stopping. When driving the left and right traveling devices, the transmission shaft of the hydraulic transmission is rotated to open the swash plate of the hydraulic pump so that the oil is delivered, and the oil is delivered to the hydraulic motor. A load applies a force to the swash plate with oil to the shift shaft, and unless the shift shaft is held at a constant rotation angle, the shift shaft returns to the neutral position and the traveling is stopped. For this reason, the steering gearshift lever that rotates the gearshift shaft of the hydraulic transmission is provided with a rotation position holding mechanism that holds the gearshift position.
【０００３】[0003]
【発明が解決しようとする課題】操向変速レバーを停止
位置に保持した場合には油圧変速機の変速軸が中立停止
位置となるようにするが、この操向変速レバーと変速軸
の連動調整が次の理由で面倒である。つまり、油圧変速
機の斜板が閉じてオイルの流れを止める変速軸の中立位
置は、走行装置を前進していて停止する場合と後退して
いて停止する場合とで微妙に違ってくるためである。そ
こで、本発明は、操向変速レバーを停止位置にした場合
に特別の調整を行わなくても油圧変速機の変速軸が自動
的に中立位置に戻って走行を停止するようにすることを
課題とする。When the steering gearshift lever is held in the stop position, the gearshift shaft of the hydraulic transmission is set to the neutral stop position. This steering gearshift lever and gearshift shaft interlock adjustment is performed. Is troublesome for the following reasons. In other words, the neutral position of the transmission shaft that closes the swash plate of the hydraulic transmission and stops the flow of oil is slightly different depending on whether the traveling device is moving forward and stopping or moving backward and stopping. is there. Therefore, it is an object of the present invention to automatically return the shift shaft of the hydraulic transmission to the neutral position and stop the traveling without special adjustment when the steering shift lever is set to the stop position. And
【０００４】[0004]
【課題を解決するための手段】本発明では、左右走行装
置１，２にそれぞれ設けた油圧変速機３，４を連動操作
する操向変速レバー７，８を操縦台９上に立設した油圧
駆動車の操縦装置において、左右操向変速レバー７，８
の回動変速位置を保持する保持機構１０を設けると共
に、操向変速レバー７，８を停止位置にした場合油圧変
速機３，４が中立停止位置へ自動復帰可能な遊動部１１
を操向変速レバー７，８と油圧変速機３，４の連動部に
設けて油圧駆動車の操縦装置を構成した。According to the present invention, hydraulic pressure control levers 7 and 8 for interlocking hydraulic transmissions 3 and 4 respectively provided on the left and right traveling devices 1 and 2 are installed on a control stand 9 in a hydraulic manner. In the control device of the driving vehicle, the left and right steering shift levers 7, 8
Is provided with a holding mechanism 10 for holding the rotational shift position, and the hydraulic transmissions 3 and 4 are capable of automatically returning to the neutral stop position when the steering shift levers 7 and 8 are set to the stop position.
Is provided at the interlocking portion of the steering gearshift levers 7 and 8 and the hydraulic transmissions 3 and 4 to form a control device for a hydraulically driven vehicle.
【０００５】[0005]
【発明の作用及び効果】この油圧駆動車で直進する場合
には、左右の操向変速レバー７，８を走行方向と走行速
度が同一となる回動位置に保持機構１０で保持し、旋回
する場合は左右の操向変速レバー７，８を適宜の走行方
向と走行速度位置に回動保持する。そして、左右の走行
装置１，２を停止する場合には操向変速レバー７，８を
停止位置に保持機構１０で保持するが、このとき油圧変
速機３，４と操向変速レバー７，８の連動部に遊び部１
１を設けているので、油圧変速機３，４が自力で停止位
置に復帰することになる。このように、走行時や旋回時
には操向変速レバー７，８が保持機構１０で保持され安
定した走行・旋回となり、機台の停止時には操向変速レ
バー７，８を停止位置に移動するだけで、油圧変速機
３，４が中立位置に自動復帰して走行を停止する。When the vehicle is driven straight by the hydraulically driven vehicle, the left and right steering speed change levers 7, 8 are held by the holding mechanism 10 at the turning positions where the running speed is the same as the running direction, and the vehicle turns. In this case, the left and right steering speed change levers 7 and 8 are rotationally held in appropriate traveling directions and traveling speed positions. When the left and right traveling devices 1 and 2 are stopped, the steering gear shift levers 7 and 8 are held at the stop positions by the holding mechanism 10. At this time, the hydraulic transmissions 3 and 4 and the steering gear shift levers 7 and 8 are held. Play part 1 in the interlocking part of
Since the hydraulic transmissions 1 and 2 are provided, the hydraulic transmissions 3 and 4 return to the stop position by themselves. As described above, the steering gear shift levers 7 and 8 are held by the holding mechanism 10 during traveling or turning, and stable traveling / turning is performed. When the machine stand is stopped, the steering gear shift levers 7 and 8 are simply moved to the stop positions. , The hydraulic transmissions 3 and 4 are automatically returned to the neutral position and the traveling is stopped.
【０００６】[0006]
【実施例】次に、本発明の実施例を図面を参照しながら
説明する。本発明を実施した歩行型油圧駆動運搬車は、
図２に示す如く、クローラからなる左右の走行装置１，
２を具備した車台１５の前側に荷台１６を搭載し、後側
に原動機１７を搭載した原動枠１８を立設している。原
動枠１８は原動機１７の左右を囲むパイプ状のフレーム
１９と上面と左右側面を覆う板体２０とで構成してい
る。Embodiments of the present invention will now be described with reference to the drawings. A walk-behind hydraulic drive vehicle that implements the present invention is
As shown in FIG. 2, the left and right traveling devices 1, which are crawlers,
A loading platform 16 is mounted on the front side of a chassis 15 equipped with two, and a driving frame 18 on which a prime mover 17 is mounted is erected on the rear side. The prime mover frame 18 is composed of a pipe-shaped frame 19 surrounding the left and right sides of the prime mover 17, and a plate body 20 covering the upper surface and the left and right side surfaces.
【０００７】原動枠１８の上部には、左右に並べて操向
変速レバー７，８を立設し、走行クラッチレバー２１を
該操向変速レバー７，８の右側に立設している。原動機
１７の後側には、原動機１７に固定した支持フレーム２
２に荷台１６をダンプするための油圧ポンプ２３を取り
付け、原動機１７の出力軸に取り付けた原動プーリ２４
と油圧ポンプ２３の入力軸に取り付けたプーリ２５へベ
ルト２６で駆動力を伝達している。On the upper part of the driving frame 18, steering gearshift levers 7 and 8 are vertically arranged side by side, and a traveling clutch lever 21 is erected on the right side of the steering gearshift levers 7 and 8. On the rear side of the prime mover 17, a support frame 2 fixed to the prime mover 17 is provided.
2 is equipped with a hydraulic pump 23 for dumping the loading platform 16 and is mounted on the output shaft of the prime mover 17
The belt 26 transmits the driving force to the pulley 25 attached to the input shaft of the hydraulic pump 23.
【０００８】車台１５の下部に取り付けたトランスミッ
ションケース２７の左右両側部には油圧変速機（ＨＳ
Ｔ）３，４を取り付け、この油圧変速機３，４の入力軸
に取り付けたプーリ２８と中継プーリ２９及び中継プー
リ２９と原動プーリ２４との間にはベルト３０，３２を
巻き掛けてクラッチプーリ３１で動力の断続を行い、前
記走行クラッチレバー２１とクラッチプーリ３１をワイ
ヤー６０で連結している。（図１参照）A hydraulic transmission (HS) is provided on both left and right sides of a transmission case 27 attached to a lower portion of the chassis 15.
T) 3 and 4 are attached, and belts 30 and 32 are wound between the pulley 28 and the relay pulley 29, which are attached to the input shafts of the hydraulic transmissions 3 and 4, and between the relay pulley 29 and the driving pulley 24. The power is intermittently connected by 31, and the traveling clutch lever 21 and the clutch pulley 31 are connected by a wire 60. (See Fig. 1)
【０００９】原動枠１８の上部は、図１に示す如く構成
している。原動枠１８の上側後部において、前後に平行
に２本の枢支軸３３，３４を原動枠１８に横架軸支して
いる。前側の枢支軸３３には、左右の操向変速レバー
７，８を枢支するのであるが、左側の操向変速レバー７
は、枢支軸３３に直接固着した前後方向の支持筒３５に
下端の屈曲部を嵌合していて、原動枠１８の上側の操縦
台９に設けた前後方向のガイド溝３７から上方へ突出さ
せている。３８は操向変速レバー７を横方向へ引っ張る
ばねで、ガイド溝３７の右側へ引き寄せている。The upper part of the drive frame 18 is constructed as shown in FIG. At the upper rear part of the driving frame 18, two pivot shafts 33, 34 are horizontally supported by the driving frame 18 in parallel to the front and rear. The left and right steering speed change levers 7 and 8 are pivotally supported by the front side pivot shaft 33.
Has a bent portion at the lower end fitted to a support cylinder 35 in the front-rear direction that is directly fixed to the pivot shaft 33, and protrudes upward from a guide groove 37 in the front-rear direction provided in the control base 9 on the upper side of the driving frame 18. I am letting you. Reference numeral 38 denotes a spring that pulls the steering gear shift lever 7 in the lateral direction, which is pulled to the right side of the guide groove 37.
【００１０】ガイド溝３７は操向変速レバー７が中立停
止位置となる部分で横方向に屈曲させて、前進側から後
進側へ操向レバー７を切り換える場合にばね３８の引張
力に抗して左横方向へ少し傾けるようにしている。左側
操向変速レバー７を前後に回動することで枢支軸３３が
回動するが、この枢支軸３３にはアーム３９を固着し、
このアーム３９と下方のトランスミッションケース２７
に設けた左側用油圧変速機３の変速軸５とをロッド４０
等からなるリンクで連結していて、左側操向変速レバー
７を中立位置から前方へ回動すると左側走行装置１が前
進増速し、中立位置から後方へ回動すると同じく左側走
行装置１が後退増速するようになる。The guide groove 37 is bent laterally at the portion where the steering gear shift lever 7 is at the neutral stop position, and resists the tensile force of the spring 38 when the steering lever 7 is switched from the forward side to the reverse side. I try to tilt it slightly to the left. The pivot shaft 33 is rotated by rotating the left steering gear 7 back and forth. The arm 39 is fixed to the pivot shaft 33,
This arm 39 and the lower transmission case 27
And the transmission shaft 5 of the left hydraulic transmission 3 provided on the
When the left steering speed change lever 7 is rotated forward from the neutral position, the left traveling device 1 is accelerated and when the left steering gear 7 is rotated backward from the neutral position, the left traveling device 1 is also retracted. It will speed up.
【００１１】枢支軸３３には、さらにローラ４１付のＬ
型カム板４２と多数のノッチ４３を形成した扇状プレー
ト４４とを固着している。Ｌ型カム板４２は走行クラッ
チレバー２１と連動するためのものであり、扇状プレー
ト４４のノッチ４３に係止具４５のボール４６が嵌合し
て左側操向変速レバー７の回動位置を保持するようにな
る保持機構１０を構成している。扇プレート４４は、図
３に示す如く、左側操向変速レバー７が中立位置となる
凹部４７を幅広く形成して油圧変速機３の変速軸５が自
己の復帰力で停止位置に戻れるようにしている。尚、後
述する右側操向変速レバー８の扇状プレート４８の形状
もこの左側扇状プレート４４と同様にしている。The pivot 33 is further provided with an L having a roller 41.
The die cam plate 42 and the fan-shaped plate 44 having a large number of notches 43 are fixed to each other. The L-shaped cam plate 42 is for interlocking with the traveling clutch lever 21, and the ball 46 of the locking member 45 is fitted into the notch 43 of the fan-shaped plate 44 to hold the turning position of the left steering gear shift lever 7. The holding mechanism 10 is configured to do so. As shown in FIG. 3, the fan plate 44 has a wide recessed portion 47 in which the left steering speed change lever 7 is in the neutral position so that the speed change shaft 5 of the hydraulic transmission 3 can return to the stop position by its own restoring force. There is. The shape of the fan-shaped plate 48 of the right steering gear 8 which will be described later is also the same as that of the left fan-shaped plate 44.
【００１２】右側操向変速レバー８は、前記の左側の操
向変速レバー７と同様に機能するよう、枢支軸３３に外
嵌した枢支筒４９に固着した前後方向の支持筒５０に枢
支している。枢支筒４９には枢支軸３３と同様にＬ型カ
ム板５１、扇状プレート４８、アーム５２を固着しアー
ム５２をロッド５３等でトランスミッションケース２７
の右側用油圧変速機４の変速軸に連結している。この右
側操向変速レバー８は操縦台９のガイド溝５４から上方
へ突出させ、右側の操向装置２の走行方向と走行速度を
左側操向変速レバー７と同様に変更操作できるようにし
ている。The right-hand steering gear shift lever 8 is pivotally mounted on a support barrel 50 in the front-rear direction fixed to a pivot support barrel 49 externally fitted on the pivot shaft 33 so that the right-hand steering gear shift lever 8 functions similarly to the left-hand steering shift lever 7. I support you. Similar to the pivot 33, the L-shaped cam plate 51, the fan-shaped plate 48, and the arm 52 are fixed to the pivot cylinder 49, and the arm 52 is connected to the transmission case 27 by a rod 53 or the like.
Is connected to the shift shaft of the right hydraulic transmission 4. The right steering gear 8 is projected upward from the guide groove 54 of the control base 9 so that the traveling direction and traveling speed of the right steering device 2 can be changed in the same manner as the left steering gear 7. .
【００１３】後側の枢支軸３４には、走行クラッチレバ
ー２１の連動機構を設けている。走行クラッチレバー２
１の下端基部には枢支軸３４に嵌合枢支し、この走行ク
ラッチレバー２１の杆身を挟んで連動用アーム５４と駐
車ブレーキ用アーム５５を設け、走行クラッチレバー１
３を左側に傾けて前後回動すると連動用アーム５４のみ
が係合し、右側に傾けて前後回動すると連動用アーム５
４と駐車ブレーキ用アーム５５が係合するようにしてい
る。The rear pivot shaft 34 is provided with an interlocking mechanism for the traveling clutch lever 21. Running clutch lever 2
The lower end of the traveling clutch lever 1 is fitted and pivotally supported by a pivot shaft 34, and an interlocking arm 54 and a parking brake arm 55 are provided with the rod of the traveling clutch lever 21 interposed therebetween.
When 3 is tilted to the left and pivoted back and forth, only the interlocking arm 54 engages, and when it is tilted to the right and pivoted back and forth, the interlocking arm 5 is engaged.
4 and the parking brake arm 55 are engaged with each other.
【００１４】連動用アーム５４は、枢支軸３４に固着
し、駐車ブレーキ用アーム５５は枢支軸２６に回動可能
に外嵌し、該アーム５５の端部をワイヤー５６で駐車ブ
レーキ機構に連結している。また、枢支軸３４にはクラ
ッチ用アーム５７の筒部５８を固着していて、このアー
ム５７を別のアーム５９とワイヤ６０を介してクラッチ
プーリ３１に連結してアーム５７の回動で動力の断続を
切り換えられるようにしている。The interlocking arm 54 is fixed to the pivot shaft 34, the parking brake arm 55 is rotatably fitted onto the pivot shaft 26, and the end of the arm 55 is connected to the parking brake mechanism by a wire 56. It is connected. Further, a cylinder portion 58 of a clutch arm 57 is fixed to the pivot shaft 34, and this arm 57 is connected to the clutch pulley 31 via another arm 59 and a wire 60 so that the arm 57 rotates to generate power. You can switch the connection and disconnection of.
【００１５】枢支軸３４には、前記Ｌ型カム板４２，５
１に接近して略同一形状のＬ型カム板６１，６２を固着
している。操向変速レバー７，８側のＬ型カム板４２，
５１と枢支軸３４側のＬ型カム板６１，６２にはそれぞ
れ他方に係合するようローラ４１，６３及び６４，６５
を突設していて、図４に示す如く、枢支軸３４を回す
と、操向クラッチレバー７，８が前進あるいは後退位置
に有れば、中立停止位置に戻るよう、作用する関係にな
る。The L-shaped cam plates 42, 5 are attached to the pivot shaft 34.
1, L-shaped cam plates 61 and 62 having substantially the same shape are fixed. L-shaped cam plate 42 on the steering gearshift lever 7, 8 side,
51 and the L-shaped cam plates 61 and 62 on the side of the pivot shaft 34 so that the rollers 41, 63 and 64, 65 engage with the other, respectively.
When the pivot shaft 34 is rotated as shown in FIG. 4 when the steering clutch levers 7 and 8 are in the forward or backward positions, the relationship is such that they return to the neutral stop position. .
【００１６】走行クラッチレバー２１を操縦台９から突
出させるガイド溝６６はＬ字状に形成し、走行クラッチ
レバー２１を前後方向の長い溝部に沿って前方に回動す
るとクラッチプーリ３１が動力伝動位置となり、後方へ
回動すると、操向変速レバー７，８を中立位置に戻した
後にクラッチプーリ３１を動力伝動を断つ位置へ移動す
るようになる。走行クラッチレバー２１をさらに右横へ
倒し前方へ少し回動することで駐車ブレーキが入ること
になる。A guide groove 66 for projecting the traveling clutch lever 21 from the control base 9 is formed in an L shape, and when the traveling clutch lever 21 is rotated forward along a long groove in the front-rear direction, the clutch pulley 31 is in a power transmission position. When it is rotated rearward, the steering gearshift levers 7 and 8 are returned to the neutral position and then the clutch pulley 31 is moved to the position where the power transmission is cut off. The parking brake is turned on by further tilting the traveling clutch lever 21 to the right and turning it slightly forward.
【００１７】原動枠１８の後側にはパイプ材で後方へ向
けてループ状に突出させてハンドル杆７０を構成してい
て、その下側においてさらに後方へ安全バー７１を突出
して設けている。この安全バー７１は前方へ向う支持杆
７２，７３を原動枠１８から前後揺動可能に吊ったアー
ム７４，７５と後側の支持杆３４に枢支した取付ブラケ
ット７６，７７に枢支して前後揺動可能に設けている。
ブラケット７６，７７には前側枢支軸３３の下方に向け
てＬ字状に屈曲させた係合杆７８，７９を突設してい
て、枢支軸３３に下方へ向けて突設した係合片８０と枢
支筒４９に下方に向けて突設した係合片８１とに係合す
る位置に延設している。On the rear side of the drive frame 18, a handle rod 70 is constructed by projecting backward in a loop shape with a pipe material, and a safety bar 71 is provided further rearward on the lower side thereof. The safety bar 71 has support rods 72, 73 facing forward, pivotally supported by arms 74, 75 hanging from the driving frame 18 so as to be capable of swinging back and forth, and mounting brackets 76, 77 pivotally supported by the support rod 34 on the rear side. It is swingable back and forth.
The brackets 76 and 77 are provided with engaging rods 78 and 79 which are bent in an L shape toward the lower side of the front pivot shaft 33 so as to project downward from the pivot shaft 33. It extends to a position where it engages with the piece 80 and the engaging piece 81 that projects downward from the pivot tube 49.
【００１８】８２，８３は安全バー７１の前後揺動範囲
を規制する規制ピンである。従って、安全バー７１を前
方へ押すと、係合片７８が係合片８０と係合するか係合
片７９が係合片８１と係合して後進位置にある左右の操
向変速レバー７，８を停止位置あるいは微速前進位置に
回動復帰させることになる。操向変速レバー７，８と油
圧変速機３，４の変速軸５，６との間の連動で操向変速
レバー７，８の中立停止位置における遊び部１１は、前
記実施例では扇状プレート４４の凹部４７であるが、図
５や図６に示す実施例のようにしてもよい。Reference numerals 82 and 83 are restriction pins for restricting the front-back swing range of the safety bar 71. Therefore, when the safety bar 71 is pushed forward, the engagement piece 78 engages with the engagement piece 80 or the engagement piece 79 engages with the engagement piece 81, and the left and right steering speed change levers 7 in the reverse position are provided. , 8 are returned to the stop position or the slightly advanced position by turning. The play portion 11 at the neutral stop position of the steering gear shift levers 7, 8 by the interlock between the steering gear shift levers 7, 8 and the gear shift shafts 5, 6 of the hydraulic transmissions 3, 4 has the fan-shaped plate 44 in the above embodiment. However, the recess 47 may be formed as in the embodiment shown in FIGS.
【００１９】図５の実施例は、操向変速レバー７，８と
油圧変速機３，４を連結するロッド４０，５３部に設け
るもので、上側ロッド４０，５３と下側ロッド８４（８
５）を遊動部１１を有する連結筒８６で連結している。
この場合には扇状プレート４４，４８の係合凹部４７は
ノッチ４３と同様に遊びの無いものにする。The embodiment shown in FIG. 5 is provided on the rods 40 and 53 connecting the steering speed change levers 7 and 8 to the hydraulic transmissions 3 and 4, and the upper rods 40 and 53 and the lower rods 84 (8) are provided.
5) are connected by a connecting cylinder 86 having a floating portion 11.
In this case, the engaging recesses 47 of the fan-shaped plates 44 and 48 are free of play like the notch 43.
【００２０】図６の実施例は、操向変速レバー７，８の
動きを油圧変速機３，４の変速軸５，６に伝える連動部
に設けるもので、左側操向レバー７のロッド４０の動き
が中継軸８７に枢支したカム板８８，８９とロッド９０
を介して油圧変速機３の変速軸５に伝達されるようにし
ている。カム板８９のロッド９０を嵌合させる部分は長
穴９１にしていて遊動部１１としている。この長穴９１
の両端には遊び調整用の調整板９２，９３を位置変更可
能に取り付けている。The embodiment shown in FIG. 6 is provided at an interlocking portion for transmitting the movements of the steering gearshift levers 7 and 8 to the gearshift shafts 5 and 6 of the hydraulic transmissions 3 and 4. The cam plates 88 and 89 and the rod 90 whose movement is pivotally supported by the relay shaft 87.
Is transmitted to the transmission shaft 5 of the hydraulic transmission 3 via. A portion of the cam plate 89 into which the rod 90 is fitted is formed as a long hole 91 to serve as the floating portion 11. This long hole 91
Adjusting plates 92 and 93 for adjusting the play are attached to both ends of the so that the position can be changed.
【図１】一部の拡大斜視図である。FIG. 1 is a partially enlarged perspective view.
【図２】一部の側面図である。FIG. 2 is a partial side view.
【図３】一部の拡大側断面図である。FIG. 3 is a partial enlarged side sectional view.
【図４】一部の拡大側断面図である。FIG. 4 is a partial enlarged side sectional view.
【図５】別実施例の一部拡大側面図である。FIG. 5 is a partially enlarged side view of another embodiment.
【図６】別実施例の一部拡大側面図である。FIG. 6 is a partially enlarged side view of another embodiment.
１ 左側走行装置 ２ 右側走行装置 ３ 左側油圧変速機 ４ 右側油圧変速機 ７ 左側操向変速レバー ８ 右側操向変速レバー ９ 操縦台 １０ 保持機構 １１ 遊動部 1 Left-side traveling device 2 Right-side traveling device 3 Left-side hydraulic transmission 4 Right-side hydraulic transmission 7 Left-side steering gearshift lever 8 Right-side steering gearshift lever 9 Control platform 10 Holding mechanism 11 Floating part
Claims (1)
設けた油圧変速機（３），（４）を連動操作する操向変
速レバー（７），（８）を操縦台（９）上に立設した油
圧駆動車の操縦装置において、左右操向変速レバー
（７），（８）の回動変速位置を保持する保持機構（１
０）を設けると共に、操向変速レバー（７），（８）を
停止位置にした場合油圧変速機（３），（４）が中立停
止位置へ自動復帰可能な遊動部（１１）を操向変速レバ
ー（７），（８）と油圧変速機（３），（４）の連動部
に設けたことを特徴とする油圧駆動車の操縦装置。1. A steering platform (9) having steering speed change levers (7), (8) for interlocking operation of hydraulic transmissions (3), (4) provided on the left and right traveling devices (1), (2), respectively. In a control device for a hydraulically driven vehicle installed upright, a holding mechanism (1) for holding the rotational shift positions of the left and right steering shift levers (7), (8).
0) is provided, and the hydraulic transmissions (3), (4) steer the idler part (11) capable of automatically returning to the neutral stop position when the steering gear shift levers (7), (8) are set to the stop position. A control device for a hydraulically driven vehicle, characterized in that it is provided at the interlocking portion of the speed change levers (7), (8) and the hydraulic transmissions (3), (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25926494A JPH0899649A (en) | 1994-09-28 | 1994-09-28 | Maneuvering device for hydraulically operared vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25926494A JPH0899649A (en) | 1994-09-28 | 1994-09-28 | Maneuvering device for hydraulically operared vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0899649A true JPH0899649A (en) | 1996-04-16 |
Family
ID=17331696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25926494A Pending JPH0899649A (en) | 1994-09-28 | 1994-09-28 | Maneuvering device for hydraulically operared vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0899649A (en) |
-
1994
- 1994-09-28 JP JP25926494A patent/JPH0899649A/en active Pending
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