JPH0730179U - Control device for hydraulically driven vehicle - Google Patents
Control device for hydraulically driven vehicleInfo
- Publication number
- JPH0730179U JPH0730179U JP6595793U JP6595793U JPH0730179U JP H0730179 U JPH0730179 U JP H0730179U JP 6595793 U JP6595793 U JP 6595793U JP 6595793 U JP6595793 U JP 6595793U JP H0730179 U JPH0730179 U JP H0730179U
- Authority
- JP
- Japan
- Prior art keywords
- steering
- levers
- hydraulic
- interlocking
- 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
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Abstract
(57)【要約】
【目的】 左右の走行装置を油圧変速機で別々に走行方
向と速度を変えることのできる油圧走行車両において、
左右の走行装置の速度差があまり大きくならないように
して安全に操縦できるようにする。
【構成】 左右の操向変速レバー7,7の前後中間位置
から前方への回動と後方への回動に対応して左右の走行
装置13,13がそれぞれ停止から前進増速と後進増速
となるよう操向変速レバー7,7と油圧変速機25,2
5を連動機構11,11で連動し、両連動機構11,1
1に一方の操向変速レバー7の回動に伴って他方の操向
変速レバー7を同方向に回動すべく連動する連動部85
を一定の遊びを持たせて設ける。
(57) [Abstract] [Purpose] In a hydraulic traveling vehicle that can change the traveling direction and speed of the left and right traveling devices separately with a hydraulic transmission,
Make sure that the speed difference between the left and right traveling devices does not become too large so that you can operate safely. [Structure] The left and right traveling devices 13 and 13 are stopped, respectively, in response to the forward and backward rotation of the left and right steering speed change levers 7 and 7 from the front-rear intermediate position, and the forward and backward speed increases. Steering gearshift levers 7, 7 and hydraulic transmissions 25, 2
5 are interlocked by interlocking mechanisms 11 and 11, and both interlocking mechanisms 11 and 1
The interlocking portion 85 that interlocks to rotate the other steering gearshift lever 7 in the same direction as the one steering gearshift lever 7 rotates.
Is provided with a certain amount of play.
Description
【0001】[0001]
本考案は、車輪やクローラからなる左右の走行装置を左右それぞれに設けた油 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 で操向する油圧走行車両の操縦装置に関する。 The present invention relates to a hydraulic traveling vehicle in which the left and right traveling devices including wheels and crawlers are driven by hydraulic transmissions provided on the left and right, respectively, and the traveling direction and traveling speed of the left and right traveling devices are changed separately. Control device.
【0002】[0002]
前記の油圧走行車両は、油圧ポンプと油圧モータからなる油圧変速装置(HS T)を左右の走行装置の駆動側にそれぞれ設け、この左右の油圧変速装置の変速 を操作する操向変速レバーを設けている。 この左右の操向変速レバーを操作して左右の走行装置の走行方向と速度を変え ることで種々の旋回方法が選ぶことができる。例えば、左右の走行装置の走行速 度を変えることで旋回半径を変更でき、片側の走行装置を停止して片側を駆動す ることでその場旋回ができ、左右逆方向に走行することでスピン旋回ができる。 このように種々の旋回方法が選べるので、トラクターなどの農耕用車両や工事 現場で使用する運搬車等の操縦装置として利用される。 The hydraulic traveling vehicle is provided with a hydraulic transmission (HST) including a hydraulic pump and a hydraulic motor on the drive sides of the left and right traveling devices, respectively, and steering steering shift levers for operating the shifting of the left and right hydraulic transmissions. ing. Various turning methods can be selected by operating the left and right steering speed change levers to change the running direction and speed of the left and right running devices. For example, the turning radius can be changed by changing the traveling speed of the left and right traveling devices, turning on the spot by stopping the traveling device on one side and driving one side, and spinning by rotating in the opposite direction to the left and right. You can turn. Since various turning methods can be selected in this way, it is used as a control device for agricultural vehicles such as tractors and transport vehicles used at construction sites.
【0003】[0003]
このような油圧走行車両の操縦装置は、左右の走行装置の速度差が大きいと車 体が急激に旋回して車体が不安定になり、作業者が危険な状態になることがある 。 In such a control device for a hydraulically traveling vehicle, if the speed difference between the left and right traveling devices is large, the vehicle may suddenly turn and the vehicle body may become unstable, resulting in a dangerous condition for the operator.
【0004】[0004]
そこで、本考案では、左右の走行装置13,13の走行方向と速度を操向変速 レバー7,7で各別に変える油圧走行車両の操縦装置において、左右の操向変速 レバー7,7の前後中間位置から前方への回動と後方への回動に対応して左右の 走行装置13,13がそれぞれ停止から前進増速と後進増速となるよう操向変速 レバー7,7と油圧変速機25,25を連動機構11,11で連動し、両連動機 構11,11に一方の操向変速レバー7の回動に伴って他方の操向変速レバー7 を同方向に回動すべく連動する連動部85を一定の遊びを持たせて設けて油圧走 行車両の操縦装置を構成した。 Therefore, in the present invention, in the control device for a hydraulic traveling vehicle in which the traveling directions and speeds of the left and right traveling devices 13 and 13 are changed by the steering and shifting levers 7 and 7, respectively, in the front and rear intermediate positions of the left and right steering and shifting levers 7 and 7. The steering gearshift levers 7 and 7 and the hydraulic transmission 25 allow the left and right traveling devices 13 and 13 to move from stop to forward speed increase and reverse speed increase, respectively, in response to the rotation from the position to the front and the rotation to the rear. , 25 are interlocked by interlocking mechanisms 11 and 11, and both interlocking mechanisms 11 and 11 are interlocked to rotate the other steering gearshift lever 7 in the same direction as one steering gearshift lever 7 pivots. The control unit of the hydraulic traveling vehicle is configured by providing the interlocking portion 85 with a certain amount of play.
【0005】[0005]
左右の操向変速レバー7,7は、同方向へ同角度回動すれば前進あるいは後進 の直進となり、左右の回動角度を変えると旋回となり、左右逆方向に回動すれば スピン旋回となるのであるが、例え一方の操向レバー7のみを大きく回動するこ とがあっても連動部85の遊びの範囲によって他方の操向レバー7も同方向に回 動して緩やかな旋回状態となり、両操向レバー7,7を逆方向に大きく回動しよ うとしても連動部85によってその動きが規制され、緩やかなスピン旋回となる 。 このように操向変速レバー7,7を不用意に操作することがあっても、車体が 急激な動きをすることがなく安全である。 The left and right steering speed change levers 7, 7 turn forward or backward in a straight line if they rotate in the same direction by the same angle, turn when the left and right turning angles are changed, and spin turn if they turn in the opposite left and right directions. However, even if only one steering lever 7 is rotated significantly, the other steering lever 7 is also rotated in the same direction depending on the play range of the interlocking portion 85, resulting in a gentle turning state. Even if the steering levers 7 and 7 are to be largely rotated in the opposite directions, the movement is restricted by the interlocking portion 85, and a gentle spin turning is performed. Even if the steering gearshift levers 7, 7 are inadvertently operated in this way, the vehicle body does not make a sudden movement and is safe.
【0006】[0006]
次に、本考案の一実施例を図面を参照しながら説明する。 クローラ13からなる走行装置を具備した車台5の前側には荷台14を搭載し 、後側には原動機2を搭載している。 原動機2の周囲はパイプ状の原動枠フレーム4で囲み、この原動枠フレーム4 の上面と左右側面を板体で覆い原動枠3としている。原動枠フレーム4は、後下 端を車台5に設けた横軸6に枢支し、前上端の左右を車台5から立設した支柱1 5上部に設けたフック16にピン17を係合して固定している。ピン17は、レ バー18を回動することでフック16に対して係脱し、係合側へばねで付勢して いる。 Next, an embodiment of the present invention will be described with reference to the drawings. A loading platform 14 is mounted on the front side of a chassis 5 equipped with a traveling device composed of crawlers 13, and a prime mover 2 is mounted on the rear side thereof. The periphery of the prime mover 2 is surrounded by a pipe-shaped prime mover frame 4, and the top and left and right sides of the prime mover frame 4 are covered with plates to form a prime mover frame 3. The driving frame 4 has its rear lower end pivotally supported by a horizontal shaft 6 provided on a chassis 5, and its left and right upper front ends are engaged with pins 17 by hooks 16 provided on the upper part of a pillar 15 standing upright from the chassis 5. Fixed. The pin 17 is disengaged from the hook 16 by rotating the lever 18, and is biased toward the engaging side by a spring.
【0007】 原動枠フレーム4の上部には、左右に並べた操向変速レバー7,7や走行クラ ッチレバー8等の操縦操作具9を立設している。 また、原動枠フレーム4の後側には駐車ブレーキレバー19を設けている。 原動機2の後側には、原動機2に固定した支持フレーム20に荷台14をダン プするための油圧ポンプ21を取り付け、原動機2の出力軸に取り付けた原動プ ーリ22とポンプ21の入力軸に取り付けたプーリ23へベルト24で駆動力を 伝達している。On the upper part of the driving frame 4, a steering operation tool 9 such as steering gearshift levers 7 and 7 and a traveling clutch lever 8 arranged side by side is provided upright. A parking brake lever 19 is provided on the rear side of the drive frame 4. On the rear side of the prime mover 2, a hydraulic pump 21 for damping the loading platform 14 is attached to a support frame 20 fixed to the prime mover 2, and a prime mover 22 attached to an output shaft of the prime mover 2 and an input shaft of the pump 21. The driving force is transmitted by the belt 24 to the pulley 23 attached to the.
【0008】 車台5の下部に取り付けたミッションケース10の左右側部には油圧変速機( HST)25を取り付け、この油圧変速機25の入力軸に取り付けたプーリ26 と中継プーリ27との間にベルト28を巻き掛け、原動プーリ22と中継プーリ 27との間にベルト29を巻き掛けて動力伝動を行うようにしている。30は、 ベルト29を張ったり緩めたりして動力の断続を行うクラッチプーリで前記走行 クラッチレバー8とワイヤーで連結している。A hydraulic transmission (HST) 25 is attached to the left and right sides of the transmission case 10 attached to the lower part of the chassis 5, and a transmission 26 and a relay pulley 27 are attached between an input shaft of the hydraulic transmission 25 and a relay pulley 27. A belt 28 is wound around the belt 28, and a belt 29 is wound between the driving pulley 22 and the relay pulley 27 to transmit power. Numeral 30 is a clutch pulley for connecting and disconnecting the power by tensioning or loosening the belt 29, which is connected to the traveling clutch lever 8 by a wire.
【0009】 操向変速レバー7,7と油圧変速機25の変速レバー31は、図1に示す如く 、リンク機構11で連結している。 操向変速レバー7,7は、原動枠フレーム4に横架した横軸32に外嵌した左 右の取付筒33,33に左右回動可能に枢支し、原動枠3に形成した前後方向の ガイド溝34,34から上方へ突出させている。 左右の取付筒33,33から突出させたアーム35,35の先端と車台5側に 枢支した横軸36に枢支した左右の中継筒37,37の突出アーム38,38の 先端とを連結ロッド39,39で連結している。As shown in FIG. 1, the steering gearshift levers 7, 7 and the gearshift lever 31 of the hydraulic transmission 25 are connected by a link mechanism 11. The steering gearshift levers 7, 7 are pivotally supported by left and right mounting cylinders 33, 33 externally fitted on a horizontal shaft 32 mounted horizontally on the driving frame 4 so as to be rotatable left and right, and are formed in the driving frame 3 in the front-back direction. The guide grooves 34, 34 are projected upward. The ends of the arms 35, 35 protruding from the left and right mounting cylinders 33, 33 are connected to the ends of the protruding arms 38, 38 of the left and right relay cylinders 37, 37 pivotally supported by a horizontal shaft 36 pivotally supported on the chassis 5 side. They are connected by rods 39, 39.
【0010】 一方の連結ロッド39から他方の連結ロッド39に向けて係合片40を突出し 、他方の連結ロッド39からは該係合片40を上下から間隔を持って挾み込むよ う係合片41,42を突出させて連動部85を構成している。43,43は連結 ロッド39の長さを調節するアジャストナットである。 左右の操向変速レバー7,7は、この係合片40,41,42によって一方の 操向変速レバー7がある程度以上回動すると他方の操向変速レバー7も同方向に 回動することになる。An engaging piece 40 is projected from one connecting rod 39 toward the other connecting rod 39, and the engaging piece 40 is inserted from the other connecting rod 39 with a space from above and below. The interlocking portion 85 is configured by projecting the pieces 41 and 42. 43 and 43 are adjusting nuts for adjusting the length of the connecting rod 39. The left and right steering speed change levers 7, 7 are arranged such that when one of the steering speed change levers 7 is rotated by the engaging pieces 40, 41, 42 to a certain extent or more, the other steering speed change lever 7 is also rotated in the same direction. Become.
【0011】 連結ロッド39下端の屈曲させた突出アーム38との連結枢支軸12部の位置 は、操向変速レバー7,7を中立位置にした場合に、その軸方向が原動枠フレー ム4を枢支した横軸6の軸方向位置と一致し、原動枠フレーム4を後方へ回動し ても操向変速レバー7,7と油圧変速機25の変速レバー31の連結リンク11 が動くことなく、原動枠フレーム4を大きく後方へ回動して原動機2の周囲を開 放できることになる。The position of the connecting pivot shaft 12 portion with the bent protruding arm 38 at the lower end of the connecting rod 39 is such that when the steering speed change levers 7, 7 are in the neutral position, the axial direction thereof is the drive frame frame 4. The connecting link 11 of the steering gearshift levers 7 and 7 and the gearshift lever 31 of the hydraulic transmission 25 moves even when the driving frame frame 4 is rotated rearward, which coincides with the axial position of the horizontal shaft 6 which pivotally supports. Instead, the driving frame 2 can be largely rotated rearward to open the periphery of the driving machine 2.
【0012】 中継筒37,37から下方へ向けて別のアーム44,44を突出し、このアー ム44,44の先端とミッションケース10の左右側面に設けた油圧変速機25 の変速レバー31をロッド45,45で連結している。 さらに、左右の中継筒37,37には、筒中心方向と平行にピン46,47を 突設していて、左右の操向変速レバー7,7が前後中間位置で走行装置が駆動さ れない位置となると、該ピン46,47が上下垂直に並び、後述する駐車ブレー キ作用具48が回動可能となる。Another arm 44, 44 is projected downward from the relay cylinder 37, 37, and the transmission lever 31 of the hydraulic transmission 25 provided on the tip ends of the arm 44, 44 and the left and right side surfaces of the transmission case 10 is connected to the rod. 45 and 45 are connected. Further, the left and right relay cylinders 37, 37 are provided with pins 46, 47 projecting parallel to the cylinder center direction so that the left and right steering speed change levers 7, 7 are not in the front-rear intermediate position and the traveling device is not driven. When the position is reached, the pins 46 and 47 are vertically aligned and the parking brake operating device 48 described later is rotatable.
【0013】 駐車ブレーキ作動具48は中継筒37,37の軸方向と直交する方向へ向けて 車台5に設けた枢支軸49へ回動可能に枢支したもので、前記ピン46,47が 通過するU溝50を設けた規制板51とミッションケース10内の駐車ギヤ52 をシフトするシフトレバー53を挾み込む作動板54を突設していて、規制板5 1に固着したピン55と駐車レバー19とをワイヤー56で連結している。 従って、駐車レバー19を回動して駐車ギヤ52を駐車位置にできるのは、左 右の操向変速レバー7,7が中立位置にある場合のみで作動具48が回動して駐 車ギヤ52をシフトすることができる。The parking brake actuator 48 is rotatably supported on a pivot shaft 49 provided on the chassis 5 in a direction orthogonal to the axial direction of the relay cylinders 37, 37. A restricting plate 51 having a U-shaped groove 50 passing therethrough and an operating plate 54 for holding a shift lever 53 for shifting a parking gear 52 in the mission case 10 are provided projectingly, and a pin 55 fixed to the restricting plate 51 is provided. The parking lever 19 is connected by a wire 56. Accordingly, the parking gear 52 can be rotated to the parking position by rotating the parking lever 19 only when the left and right steering speed change levers 7, 7 are in the neutral position and the operating tool 48 is rotated. 52 can be shifted.
【0014】 ミッションケース10の内部構造は、図4の伝動機構図に示す如く構成してい る。 左側の油圧変速機25に連結したミッションケース10内の入力軸57に小ギ ヤ58を固着し、この小ギヤ58を第一中間軸59に固着した大ギヤ60に噛み 合わせて第一中間軸59を回転し、この第一中間軸59に固着した小ギヤ61を 第二中間軸62に固着した大ギヤ63に噛み合わせて第二中間軸62を回転し、 さらに、この第二中間軸62に固着した小ギヤ64を左側ホイル軸65のホイル ギヤ66に噛み合わせて左側ホイルスプロケット67を回転して左側のクローラ 13を駆動するよう左側ギヤ伝動系86を構成する。The internal structure of the mission case 10 is configured as shown in the transmission mechanism diagram of FIG. A small gear 58 is fixed to the input shaft 57 in the transmission case 10 connected to the left hydraulic transmission 25, and the small gear 58 is meshed with the large gear 60 fixed to the first intermediate shaft 59 to engage the first intermediate shaft. 59 is rotated to mesh the small gear 61 fixed to the first intermediate shaft 59 with the large gear 63 fixed to the second intermediate shaft 62 to rotate the second intermediate shaft 62. The left gear transmission system 86 is configured to drive the left crawler 13 by rotating the left wheel sprocket 67 by meshing the small gear 64 fixed to the wheel gear 66 of the left wheel shaft 65.
【0015】 右側の油圧変速機25に連結した入力軸68には小ギヤ69を固着し、駐車ギ ヤ52をスプライン嵌合によりスライドして前記左側油圧変速機25の入力軸5 7に固着した停止ギヤ80に噛み合せたり、外したりできるようにしている。駐 車ギヤ52がこの停止ギヤ80に噛み合えば左側ギヤ伝動系と右側ギヤ伝動系が 閉ループとなり左右のクローラが逆回転する関係に連結される。 小ギヤ69は第一中間軸59に回転可能に嵌合した大小ギヤ70の大ギヤ部7 1と噛み合い、この大小ギヤ70の小ギヤ部72が第二中間軸62に回転可能に 嵌合した大小ギヤ73の大ギヤ部74に噛み合い、この大小ギヤ73の小ギヤ部 75が右ホイル軸76のホイルギヤ77に噛み合って右側ホイルスプロケット7 8を回転して右側のクローラ13を駆動するよう右側ギヤ伝動系87を構成する 。A small gear 69 is fixed to the input shaft 68 connected to the right hydraulic transmission 25, and the parking gear 52 is slid by spline fitting and fixed to the input shaft 57 of the left hydraulic transmission 25. It can be engaged with and disengaged from the stop gear 80. When the parking gear 52 meshes with the stop gear 80, the left gear transmission system and the right gear transmission system form a closed loop, and the left and right crawlers are connected in a reverse rotation relationship. The small gear 69 meshes with the large gear portion 71 of the large and small gear 70 that is rotatably fitted to the first intermediate shaft 59, and the small gear portion 72 of this large and small gear 70 is rotatably fitted to the second intermediate shaft 62. The small gear portion 75 of the small gear 73 meshes with the large gear portion 74 of the large gear 73, and the small gear portion 75 of the large gear 73 meshes with the wheel gear 77 of the right wheel shaft 76 to rotate the right wheel sprocket 78 and drive the right crawler 13 to drive the right gear. The transmission system 87 is configured.
【図1】一部の拡大斜視図である。FIG. 1 is a partially enlarged perspective view.
【図2】一部の拡大斜視図である。FIG. 2 is a partially enlarged perspective view.
【図3】一部の側面図である。FIG. 3 is a partial side view.
【図4】一部の伝動機構図である。FIG. 4 is a partial transmission mechanism diagram.
7 操向変速レバー 13 走行装置 25 油圧変速機 85 連動部 7 Steering speed change lever 13 Travel device 25 Hydraulic transmission 85 Interlocking part
Claims (1)
行方向と速度を操向変速レバー(7),(7)で各別に
変える油圧走行車両の操縦装置において、左右の操向変
速レバー(7),(7)の前後中間位置から前方への回
動と後方への回動に対応して左右の走行装置(13),
(13)がそれぞれ停止から前進増速と後進増速となる
よう操向変速レバー(7),(7)と油圧変速機(2
5),(25)を連動機構(11),(11)で連動
し、両連動機構(11),(11)に一方の操向変速レ
バー(7)の回動に伴って他方の操向変速レバー(7)
を同方向に回動すべく連動する連動部(85)を一定の
遊びを持たせて設けてなる油圧走行車両の操縦装置。1. A steering system for a hydraulic traveling vehicle in which the traveling directions and speeds of the left and right traveling devices (13) and (13) are individually changed by steering steering levers (7), (7). The left and right traveling devices (13), corresponding to the forward rotation and the backward rotation of the levers (7) and (7) from the front-rear intermediate position,
The steering speed change levers (7) and (7) and the hydraulic transmission (2) are set so that (13) changes from stop to forward speed increase and reverse speed increase.
5) and (25) are interlocked by interlocking mechanisms (11) and (11), and both interlocking mechanisms (11) and (11) are operated to rotate one steering gear shift lever (7) to the other. Shift lever (7)
A control device for a hydraulic traveling vehicle in which an interlocking portion (85) interlocking with each other so as to rotate in the same direction is provided with a certain amount of play.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6595793U JPH0730179U (en) | 1993-11-15 | 1993-11-15 | Control device for hydraulically driven vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6595793U JPH0730179U (en) | 1993-11-15 | 1993-11-15 | Control device for hydraulically driven vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0730179U true JPH0730179U (en) | 1995-06-06 |
Family
ID=13301982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6595793U Pending JPH0730179U (en) | 1993-11-15 | 1993-11-15 | Control device for hydraulically driven vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0730179U (en) |
-
1993
- 1993-11-15 JP JP6595793U patent/JPH0730179U/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2006117147A (en) | Shift operation structure for tractor | |
KR100519855B1 (en) | Speed change operation device for vehicle | |
JP3851018B2 (en) | Work vehicle | |
JPH0730179U (en) | Control device for hydraulically driven vehicle | |
JP3943448B2 (en) | Tracked tractor | |
JP4570285B2 (en) | Tractor | |
JP3499068B2 (en) | Travel drive for agricultural tractors | |
JPH0730129U (en) | Parking brake system for motor vehicles | |
JPH0730181U (en) | Pedestrian drive frame | |
JPH0923706A (en) | Handle locking device for working vehicle | |
JP4358964B2 (en) | Steering device for traveling vehicle | |
JP3485147B2 (en) | Gearshift operating device for vehicles with continuously variable transmission | |
JP3828529B2 (en) | Agricultural tractor | |
JPH01240380A (en) | Working vehicle | |
JPH07232659A (en) | Walking type hydraulically-driven carrying vehicle | |
JP3331573B2 (en) | Hydraulic drive vehicle steering system | |
JP2000324909A (en) | Working vehicle | |
JP3626145B2 (en) | Agricultural tractor steering device | |
JP3828528B2 (en) | Agricultural tractor | |
JP3729300B2 (en) | Shift operation device for walking type vehicle with continuously variable transmission | |
JP3662547B2 (en) | Agricultural tractor travel drive device | |
JP4422233B2 (en) | Work vehicle | |
JP2002046670A (en) | Six-wheel work vehicle | |
JPH0899649A (en) | Maneuvering device for hydraulically operared vehicle | |
JP2000324903A (en) | Working vehicle |