JP2681520B2 - Power shovel steering operation device - Google Patents
Power shovel steering operation deviceInfo
- Publication number
- JP2681520B2 JP2681520B2 JP1232968A JP23296889A JP2681520B2 JP 2681520 B2 JP2681520 B2 JP 2681520B2 JP 1232968 A JP1232968 A JP 1232968A JP 23296889 A JP23296889 A JP 23296889A JP 2681520 B2 JP2681520 B2 JP 2681520B2
- Authority
- JP
- Japan
- Prior art keywords
- lever
- boss
- steering operation
- steering
- operation lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2004—Control mechanisms, e.g. control levers
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Shovels (AREA)
- Mechanical Control Devices (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は単一の操向操作レバーで操向操作を可能に
したパワーショベルの操向操作装置に関する。Description: TECHNICAL FIELD The present invention relates to a steering operation device for a power shovel, which enables a steering operation with a single steering operation lever.
（従来の技術） 従来履帯足まわりにより自走するパワーショベルに
は、運転席の前方に第７図に示すような各種の操作レバ
ーが設けられている。(Prior Art) Conventionally, a power shovel that is self-propelled around a crawler track is provided with various operation levers as shown in FIG. 7 in front of a driver's seat.
この図でａ及びｂは左右操向操作レバー、ｃは作業機
レバーで、左右操向操作レバーａ、ｂと操向操作弁ｄの
間はリンケージｅにより接続されていて、これら操向操
作レバーａ、ｂを同時に前方または後方へ操作すると車
両は前進または後進し、一方の操向操作レバーａまたは
ｂを操作すると車両は旋回するようになっている。In this figure, a and b are left and right steering operation levers, c is a working machine lever, and the left and right steering operation levers a and b and the steering operation valve d are connected by a linkage e. When a and b are simultaneously operated forward or backward, the vehicle moves forward or backward, and when one of the steering operation levers a or b is operated, the vehicle turns.
（発明が解決しようとする課題） 上記従来のパワーショベルでは、整地作業などを行う
場合、片手で作業機レバーｃを操作しながら、もう一方
の手で２本の操向操作レバーａ、ｂを操作しなければな
らず、操作に熟練を要すると共に、操作が煩雑なためオ
ペレータが早期に疲労して作業能率が悪いなどの不具合
があった。(Problems to be Solved by the Invention) In the above conventional power shovel, when performing work such as ground leveling, while operating the work implement lever c with one hand, the other hand operates the two steering operation levers a and b. There is a problem in that the operator must be operated, the operation requires skill, and the operator is tired early because the operation is complicated, resulting in poor work efficiency.
この発明は上記不具合を改善する目的でなされたもの
で単一の操向操作レバーで操向操作が行えるようにした
パワーショベルの操向操作装置を提供して、操作の容易
化を図ろうとするものである。The present invention has been made for the purpose of improving the above problems, and provides a steering operation device for a power shovel capable of performing a steering operation with a single steering operation lever, and intends to facilitate the operation. It is a thing.
（課題を解決するための手段及び作用） この発明は上記目的を達成するために、水平方向の軸
穴を有するボスと垂直方向の軸穴を有するボスとを、そ
れらの軸穴の軸心が交わらないように相互に離間して直
交状に一体化してレバーボス部を構成し、水平方向の軸
穴を有するボスを固定軸の回りに回動自在に支承し、垂
直方向の軸穴を有するボスに操向操作レバーを垂直方向
のねじれ回転軸線上で回動のみできるように挿通して、
操向操作レバーを前記レバーボス部によって前後方向へ
揺動自在かつ揺動位置でねじり回転自在に取付けると共
に、操向操作レバーに中央部を操向操作レバーと一体化
し左右両端を横方向へ張り出した作動板を固着し、該作
動板の両端に前記操作レバーのねじり回転軸を中心とし
左右方向に間隔をおいて配置したボールジョイントを介
して一対のロッドの一端を連結し、該ロッドの他端をレ
バーにボールジョイントを介して連結し、前記レバー
は、左右操向操作弁のスプールとリンクを介して接続す
るレバーを備えた回動ボスに固定したもので、操向操作
レバーの前後の揺動及び回動に伴い左右操向操作等が連
動して切り換わり、従って単一の操向操作レバーを操作
するだけで操向切換弁のスムースな作動操作ができ、車
両の前進や旋回操作を容易に行うことができるようにし
た。(Means and Actions for Solving the Problem) In order to achieve the above object, the present invention provides a boss having a horizontal shaft hole and a boss having a vertical shaft hole, in which the shaft centers of the shaft holes are A lever boss is formed by mutually orthogonally integrating them so that they do not intersect, and a boss having a horizontal shaft hole is rotatably supported around a fixed shaft, and a boss having a vertical shaft hole. Insert the steering operation lever so that it can only rotate on the twisting axis of the vertical direction,
The steering operation lever was attached by the lever boss so as to be swingable in the front-rear direction and torsionally rotatable at the swing position, and the central portion of the steering operation lever was integrated with the steering operation lever so that the left and right ends were laterally extended. An actuating plate is fixed, one end of a pair of rods is connected to both ends of the actuating plate via ball joints spaced apart in the left-right direction about the torsional rotation axis of the operating lever, and the other end of the rod is connected. Is connected to the lever via a ball joint, and the lever is fixed to a turning boss equipped with a lever that connects to the spool of the left / right steering valve via a link. The left and right steering operations are switched in conjunction with the movement and rotation, so that the steering control valve can be operated smoothly by simply operating a single steering operation lever, and the vehicle can be moved forward or backward. And so it can be easily performed.
（実施例） この発明の一実施例を図面を参照して詳述する。(Embodiment) An embodiment of the present invention will be described in detail with reference to the drawings.
図において１はパワーショベルの運転席（図示せず）
前方に設置された１本の操向操作レバーで、上部にほぼ
Ｔ字形にノブ２が設けられている。In the figure, 1 is a driver's seat of a power shovel (not shown)
It is a single steering operation lever installed at the front, and a knob 2 having a substantially T-shape is provided on the upper portion.
上記操向操作レバー１の下端側はボス３に固着された
筒状部3a内にブッシュ４を介して回転自在に支承されて
いる。The lower end side of the steering operation lever 1 is rotatably supported in a cylindrical portion 3a fixed to the boss 3 via a bush 4.
ボス３は水平方向に軸穴をもち、ボス3aは垂直方向に
軸穴を有していて、これらの軸穴の軸心が交わらないよ
うに相互に離間しており、直交状に一体化してレバーボ
ス部を構成している。The boss 3 has a shaft hole in the horizontal direction, and the boss 3a has a shaft hole in the vertical direction. The bosses 3a are separated from each other so that the shaft centers of these shaft holes do not intersect with each other, and are integrated in an orthogonal shape. It constitutes the lever boss.
上記ボス３は操向操作レバー１の前方に水平に設けら
れた固定軸５にブッシュ６を介して回動自在に支承され
ていて、上記操向操作レバー１は固定軸５を中心に前後
方向へも回動自在となっている。The boss 3 is rotatably supported by a fixed shaft 5 horizontally provided in front of the steering operation lever 1 through a bush 6, and the steering operation lever 1 is centered on the fixed shaft 5 in the front-back direction. It can also be freely rotated.
操向操作レバー１は上述のようにボス3aの垂直方向の
軸穴において垂直方向のねじり回転軸線上で回動のみで
きるように挿通していて、操向操作レバー１をレバーボ
ス部によって前後方向へ揺動自在で、かつ揺動位置でね
じり回転自在に取り付けてある。As described above, the steering operation lever 1 is inserted through the vertical shaft hole of the boss 3a so as to be only rotatable on the vertical twist rotation axis, and the steering operation lever 1 is moved forward and backward by the lever boss portion. It is swingable and can be twisted and rotated at the swing position.
また操向操作レバー１には中央部を操向操作レバー１
と一体化し左右両端を横方向へ張り出した作動板７が固
着されて、操向操作レバー１と共に回動できるようにな
っていると共に、作動板７の両端部には操作レバー１の
ねじり回転軸を中心とし左右方向に間隔をおいて配置し
たボールジョイント8,8を介して一対のロッド9,9の一端
側がそれぞれ枢着されている。Further, the steering operation lever 1 has a central portion at which the steering operation lever 1
An operating plate 7 which is integrally formed with the steering lever 1 is fixed to the left and right ends of the operating plate 7 so that it can be rotated together with the steering operation lever 1. One end sides of a pair of rods 9 and 9 are pivotally attached to each other via ball joints 8 and 8 which are arranged with a space in the left-right direction with respect to.
そして上記各ロッド9,9の他端側は回動ボス10,11より
突設されたレバー10a,11aの先端にボールジョイント8a,
8bを介してそれぞれ枢着されている。The other end of each rod 9, 9 is connected to the tip of a lever 10a, 11a projecting from a rotary boss 10, 11 at a ball joint 8a,
Each is pivotally connected via 8b.
上記各ボス10,11はボス３の両側に位置して固定軸５
に回動自在に支承されていると共に、これらボス10,11
の外周面により上記レバー10a,11aとほぼ直角に別のレ
バー10b,11bが突設され、これらレバー10b,11bの先端と
左右操向操作弁13のスプール13a,13b間がリンク14によ
り連結されている。The bosses 10 and 11 are located on both sides of the boss 3 and are fixed to the fixed shaft 5.
Is rotatably supported by the bosses 10 and 11
Another lever 10b, 11b is projected by the outer peripheral surface of the lever 10a, 11a at a substantially right angle, and the tip of these levers 10b, 11b and the spool 13a, 13b of the left and right steering valve 13 are connected by a link 14. ing.
なお操向操作系及び作業機操作系の分解図を第２図に
示す。An exploded view of the steering operation system and the working machine operation system is shown in FIG.
この図で16及び17は作業機操作レバーを示す。 In this figure, 16 and 17 indicate work implement operating levers.
次に第５図及び第６図を参照して作用を説明すると、
第５図に示すパワーショベルの車体20を前進させなが
ら、車体前部に設けられたブレード21を上下動して整地
作業などを行う場合、片手で作業機操作レバー16を操作
しながら、操向操作レバー１をもう一方の手で前方へ操
作する（前方へ揺動させる）ことにより、車体20を前進
させることができる。Next, the operation will be described with reference to FIG. 5 and FIG.
When performing the ground leveling work by moving the blade 21 provided on the front part of the vehicle body up and down while advancing the vehicle body 20 of the power shovel shown in FIG. 5, the manipulator operating lever 16 is operated with one hand while steering. The vehicle body 20 can be moved forward by operating the operation lever 1 forward with the other hand (swing it forward).
なお車体20を後進させる場合は、操向操作レバー１を
後方に揺動する。When the vehicle body 20 is moved backward, the steering operation lever 1 is swung backward.
また車体を左右方向に回動させる（ねじる）場合は、
操向操作レバー１のノブ２を旋回方向へ回動すると、操
向操作レバー１と共に作動板７が回動してボス10,11を
反対方向へ回動させるため、左右操向操作弁13のスプー
ル13a,13bが逆方向へ動作されて車体20を所望の方向へ
旋回させることができる。If you want to turn (twist) the vehicle body to the left or right,
When the knob 2 of the steering operation lever 1 is rotated in the turning direction, the operating plate 7 is rotated together with the steering operation lever 1 to rotate the bosses 10 and 11 in the opposite directions. The spools 13a and 13b are operated in the opposite directions, so that the vehicle body 20 can be turned in a desired direction.
また第６図に示すように上部旋回体22を180゜旋回さ
せた状態で車体20を旋回させる場合でも操向操作レバー
１の操作方向と車体20の旋回方向が一致するため、車体
20の前後方向を意識せずに旋回操作を行うことができ
る。Further, as shown in FIG. 6, even when the vehicle body 20 is turned with the upper revolving structure 22 being turned 180 °, the operating direction of the steering operation lever 1 and the turning direction of the vehicle body 20 coincide with each other.
The turning operation can be performed without being aware of the front-back direction of 20.
ちなみに従来のパワーショベルでは、車体前進中に旋
回する場合は第８図に示すように旋回方向の操向操作レ
バーａを後方へ操作し、また後進している場合は第９図
に示すように進行方向と逆の方向へ操作しなければなら
ないため操作ミスが発生しやすい不具合があった。By the way, in the conventional power shovel, as shown in FIG. 8, when turning while the vehicle is moving forward, the steering operation lever a in the turning direction is operated backward, and when moving backward, as shown in FIG. Since it had to be operated in the direction opposite to the traveling direction, there was a problem that operation mistakes tended to occur.
（発明の効果） この発明は以上詳述したように単一の方向操作レバー
で車両の操向と旋回操作が行えるため、作業機を使用し
て整地などの作業を行う場合、従来のように片手で２本
の操向操作レバーを同時に操作する必要がなく、操作性
が大幅に改善される。(Effect of the Invention) Since the present invention can steer and turn a vehicle with a single direction operation lever as described above in detail, when performing work such as leveling using a work implement, it can be performed as in the conventional case. It is not necessary to operate two steering levers at the same time with one hand, and operability is greatly improved.
これによってオペレータが早期に疲労することもない
ため、作業能率が向上すると共に、操向操作レバーの操
向方向と車体の旋回方向が常に一致しているため、操作
ミスを生じることがなく車両を安全かつスムーズに操縦
できるようになる。This prevents the operator from getting tired early, improving work efficiency, and since the steering direction of the steering operation lever and the turning direction of the vehicle body are always in agreement with each other, the vehicle can be operated without causing an operation error. You will be able to operate safely and smoothly.
図面はこの発明の一実施例を示し、第１図は操向操作レ
バー付近の斜視図、第２図は同分解斜視図、第３図は第
１図III−III線に沿う断面図、第４図は第１図IV−IV線
に沿う断面図、第５図及び第６図は作用説明図、第７図
ないし第９図は従来の説明図である。 １……操向操作レバー 3,10,11……ボス ５……固定軸 ７……作動板 ８……ボールジョイント 8a,8b……ボールジョイント ９……ロッド 10a,11a,10b,11b……レバー 13……左右操向操作弁 13a,13b……スプール 14……リンクThe drawings show an embodiment of the present invention. Fig. 1 is a perspective view of the vicinity of a steering operation lever, Fig. 2 is an exploded perspective view of the same, and Fig. 3 is a sectional view taken along line III-III in Fig. 1. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1, FIGS. 5 and 6 are explanatory views of the operation, and FIGS. 7 to 9 are conventional explanatory views. 1 …… Steering lever 3,10,11 …… Boss 5 …… Fixed shaft 7 …… Operating plate 8 …… Ball joint 8a, 8b …… Ball joint 9 …… Rod 10a, 11a, 10b, 11b …… Lever 13 …… Left and right steering valve 13a, 13b …… Spool 14 …… Link
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭59−43566（ＪＰ，Ｕ) 実公 昭48−3236（ＪＰ，Ｙ１) 米国特許3181389（ＵＳ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Showa 59-43566 (JP, U) Showa 48-3236 (JP, Y1) US Patent 3181389 (US, A)
Claims (1)
方向の軸穴を有するボス（3a）とを、それらの軸穴の軸
心が交わらないように相互に離間して直交状に一体化し
てレバーボス部を構成し、水平方向の軸穴を有するボス
（３）を固定軸（５）の回りに回動自在に支承し、垂直
方向の軸穴を有するボス（3a）に操向操作レバー（１）
を垂直方向のねじり回転軸線上で回動のみできるように
挿通して、操向操作レバー（１）を前記レバーボス部に
よって前後方向へ揺動自在かつ揺動位置でねじり回転自
在に取付けると共に、操向操作レバー（１）に中央部を
操向操作レバー（１）と一体化し左右両端を横方向へ張
り出した作動板（７）を固着し、該作動板（７）の両端
に前記操作レバー（１）のねじり回転軸を中心とし左右
方向に間隔を置いて配置したボールジョイント（８），
（８）を介して一対のロッド（９），（９）の一端を連
結すると共に、該ロッド（９），（９）の他端をレバー
（10a），（11a）にボールジョイント（8a），（8b）を
介して連結し、前記レバー（10a），（11a）は左右操向
操作弁（13）のスプール（13a），（13b）とリンク（1
4），（14）を介して接続するレバー（10b），（11b）
を備えた回動ボス（10），（11）に固定されていて、操
向操作レバー（１）の前後の揺動及び回動に伴い左右操
向操作等（13）が連動して切り換わるように構成したこ
とを特徴とするパワーショベルの操向操作装置。1. A boss (3) having a horizontal shaft hole and a boss (3a) having a vertical shaft hole are orthogonal to each other so as not to intersect the shaft centers of the shaft holes. To form a lever boss portion, a boss (3) having a horizontal shaft hole is rotatably supported around a fixed shaft (5), and a boss (3a) having a vertical shaft hole is operated. Orientation lever (1)
The steering operation lever (1) by the lever boss so that it can be swung back and forth and twisted and rotated at the rocking position. An operation plate (7) having a central portion integrated with the operation operation lever (1) and laterally projecting left and right ends is fixed to the direction operation lever (1), and the operation lever (7) is provided at both ends of the operation plate (7). Ball joints (8), which are arranged at intervals in the left-right direction around the torsion rotation axis of 1),
One end of the pair of rods (9) and (9) is connected via (8), and the other ends of the rods (9) and (9) are connected to the levers (10a) and (11a) by a ball joint (8a). , (8b), and the levers (10a), (11a) are linked to the spools (13a), (13b) of the left-right steering valve (13) (1).
Lever (10b), (11b) connected via 4), (14)
It is fixed to the rotation bosses (10) and (11) provided with, and the left and right steering operations etc. (13) are switched in conjunction with the front and rear swing and rotation of the steering operation lever (1). A steering operation device for a power shovel, which is configured as described above.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1232968A JP2681520B2 (en) | 1989-09-11 | 1989-09-11 | Power shovel steering operation device |
| PCT/JP1990/001147 WO1991003606A1 (en) | 1989-09-11 | 1990-09-07 | Steering device of power shovel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1232968A JP2681520B2 (en) | 1989-09-11 | 1989-09-11 | Power shovel steering operation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0396528A JPH0396528A (en) | 1991-04-22 |
| JP2681520B2 true JP2681520B2 (en) | 1997-11-26 |
Family
ID=16947702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1232968A Expired - Lifetime JP2681520B2 (en) | 1989-09-11 | 1989-09-11 | Power shovel steering operation device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2681520B2 (en) |
| WO (1) | WO1991003606A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5924516A (en) | 1996-01-16 | 1999-07-20 | Clark Equipment Company | Electronic controls on a skid steer loader |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3181389A (en) | 1962-03-06 | 1965-05-04 | Paul P Richard | Control mechanism |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS483236U (en) * | 1971-05-19 | 1973-01-16 | ||
| JPS5735733Y2 (en) * | 1978-04-05 | 1982-08-06 | ||
| JPS5943566U (en) * | 1982-09-14 | 1984-03-22 | 日立建機株式会社 | Construction machinery travel lever device |
-
1989
- 1989-09-11 JP JP1232968A patent/JP2681520B2/en not_active Expired - Lifetime
-
1990
- 1990-09-07 WO PCT/JP1990/001147 patent/WO1991003606A1/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3181389A (en) | 1962-03-06 | 1965-05-04 | Paul P Richard | Control mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1991003606A1 (en) | 1991-03-21 |
| JPH0396528A (en) | 1991-04-22 |
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