JPH04138928A - Running operation device for construction machine - Google Patents
Running operation device for construction machineInfo
- Publication number
- JPH04138928A JPH04138928A JP26272190A JP26272190A JPH04138928A JP H04138928 A JPH04138928 A JP H04138928A JP 26272190 A JP26272190 A JP 26272190A JP 26272190 A JP26272190 A JP 26272190A JP H04138928 A JPH04138928 A JP H04138928A
- Authority
- JP
- Japan
- Prior art keywords
- damper
- lever
- bracket
- floor
- bolt
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 7
- 238000013016 damping Methods 0.000 claims description 5
- 239000000428 dust Substances 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 abstract 3
- 238000010168 coupling process Methods 0.000 abstract 3
- 238000005859 coupling reaction Methods 0.000 abstract 3
- 230000008602 contraction Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
- Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
- Mechanical Control Devices (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、油圧ショベル、油圧クレーンあるいはホイー
ルローダ等の建設機械の走行操作装置に係り、より詳し
くは、キャブ内に設置される走行操作用レバーあるいは
ペダルの振動による急激な動きを減衰するダンパの取付
は構造に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a travel control device for construction machinery such as a hydraulic excavator, a hydraulic crane, or a wheel loader, and more specifically, to a travel control device installed in a cab. The installation of dampers that dampen sudden movements due to lever or pedal vibrations is structural.
（従来の技術）
第７図は前記建設機械の走行操作装置を示す側面図てあ
り、キャブのフロアｌには、左右の走行用油圧モータ（
図示せず）にそれぞれ対応する走行パイロットバルブ２
が取付けられ、該走行パイロットバルブ２のバルブシャ
フト２ａにバルブ操作用のレバー３およびペダル４の少
なくともいずれか一方がボルト５により取付けられ、レ
バー３を前倒しにする（あるいはペダル４の前方を踏む
）ことにより走行用油圧モータか前進方向に作動し、反
対にレバー３を後倒しにする（あるいはペダル４の後方
を踏む）ことにより走行用油圧モータが後進方向に作動
するように油圧回路（図示せず）か構成される。(Prior Art) Fig. 7 is a side view showing the traveling operation device of the construction machine.
Traveling pilot valve 2 corresponding to each (not shown)
is attached, at least one of a lever 3 and a pedal 4 for valve operation is attached to the valve shaft 2a of the travel pilot valve 2 with a bolt 5, and the lever 3 is moved forward (or the front of the pedal 4 is stepped on). The hydraulic circuit (not shown) is configured so that the hydraulic motor for traveling operates in the forward direction, and conversely, the hydraulic motor for traveling operates in the backward direction by moving the lever 3 backward (or stepping on the rear part of the pedal 4). ) is configured.
このような建設機械の走行操作装置において、作業の性
格上、レバー３あるいはペダル４（以下レバー３等と称
することかある）にも振動か伝達されることが多いから
、レバー３等の微操作が困難となる。このような状況て
の微操作性を確保するため、ダンパ６によりレバー３等
の振動による動きを減衰していた。In such a travel control device for construction machinery, due to the nature of the work, vibrations are often transmitted to the lever 3 or pedal 4 (hereinafter sometimes referred to as lever 3, etc.), so slight operation of lever 3, etc. becomes difficult. In order to ensure fine operability in such a situation, the damper 6 damps the movement of the lever 3 etc. due to vibration.
このような従来のタンパ６としては、乗用車等に一般的
に使用される市販のものか用いられ、また、タンパ６に
よる振動減衰対象の動きはダンパ６の伸縮方向にほぼ等
しくなければならないというの考え方に立ち、レバー３
等の動きを変換してタンパ６の伸縮方向に直角をなす方
向の動きを作るため、レバー３等にリンク７をボルト付
は等により固定し、該リンク７をフロアｌに設けた六８
に通してフロア１の下方に導き、一端側をフロアｌの下
面にホルダ９により支持させたダンパ６の他端に、前記
リンク７の下端を、前記レバー３等の中立姿勢時にダン
パ６に対してリンク７かほぼ直角をなすように５回動自
在にビン付けしていた。As such a conventional tamper 6, a commercially available one commonly used in passenger cars etc. is used, and the movement of the object to be vibration damped by the tamper 6 must be approximately equal to the direction of expansion and contraction of the damper 6. Based on your mindset, lever 3
In order to convert the movement of the tamper 6 into a movement perpendicular to the direction of expansion and contraction of the tamper 6, a link 7 is fixed to the lever 3 etc. with bolts, etc., and the link 7 is attached to the floor l.
The lower end of the link 7 is connected to the other end of the damper 6 whose one end side is supported by the holder 9 on the lower surface of the floor l, and the lower end of the link 7 is connected to the damper 6 when the lever 3 etc. is in a neutral position. The link 7 was attached to the bottle so that it could rotate 5 times at almost right angles.
（発明が解決しようとする課題）
このような従来構造においては、ダンパ６やリンク７を
、フロア１上のレバー３等か取付けられた狭いスペース
に取付けることができなかったため、ダンパ６はフロア
１の下面に取付けざるを得す、このためリンク７を通す
六８をフロア１に設ける必要か生し、このフロアｌに設
ける穴８は、リンク７のバルブシャフト２ａを中心とす
る前後方向の動きを許容するだけの長さを有する広いも
のとなり、このため、この六８から作業時の騒音、塵埃
かキャブ内に浸入し、キャブの居住性を損うという問題
点かあった。(Problem to be Solved by the Invention) In such a conventional structure, the damper 6 and the link 7 could not be installed in the narrow space where the lever 3 etc. on the floor 1 was installed. Therefore, it is necessary to provide a hole 8 on the floor 1 through which the link 7 passes, and the hole 8 provided on the floor 1 allows the link 7 to move in the front and rear direction around the valve shaft 2a. As a result, there was a problem in that noise and dust from the 68 entered the cab during work, impairing the comfort of the cab.
本発明はこのような問題点に鑑みてなされたもので、キ
ャブ内への騒音低減、塵埃浸入の防止か図れる構造の建
設機械用走行操作装置を提供することを目的とする。The present invention has been made in view of the above problems, and an object of the present invention is to provide a travel operating device for construction machinery having a structure that can reduce noise and prevent dust from entering the cab.
（課題を解決するための手段）
本発明は、ダンパによる振動減衰対象の動きはダンパに
ほぼ伸縮方向てなければならないという考え方を改め、
レバー等とダンパとか同じ線上に並んていない限り、レ
バー等の回動操作に伴ない、ダンパを伸縮させうる（ダ
ンパ作用が得られる）ということに鑑み、本発明は、キ
ャブのフロア上にブラケットを設け、該ブラケットと走
行用パイロットバルブのバルブシャフトに取付けられる
レバーまたはペダルとの間に、振動減衰用のダンパを、
ダンパ両端の連結点と前記バルブシャフトとを結ぶ線が
レバーあるいはペダルの回動の全範囲について３角形を
形成するように取付けた（直付けした）ことを特徴とす
る。(Means for Solving the Problems) The present invention changes the idea that the movement of the target vibration damped by the damper must be substantially in the direction of expansion and contraction of the damper.
In view of the fact that unless the lever etc. and the damper are lined up on the same line, the damper can be expanded and contracted (dampering effect can be obtained) as the lever etc. is rotated, and the present invention has been developed by installing a bracket on the floor of the cab. A damper for vibration damping is provided between the bracket and the lever or pedal attached to the valve shaft of the pilot valve for travel.
The damper is characterized in that it is attached (directly attached) so that the line connecting the connecting points at both ends of the damper and the valve shaft forms a triangle over the entire range of rotation of the lever or pedal.
（作用）
本発明は、上述のようにダンパをレバー等に直付けした
構造であるが、レバー等の回動によってダンパか伸縮す
るため、キャブ等に加わる振動のエネルギは、ダンパに
より吸収されるので、レバー等に急激な動きか生じるこ
とはない。ダンパはレバー等とフロアとの間に取付ける
ため、フロアに穴を設ける必要はない。(Function) As described above, the present invention has a structure in which the damper is directly attached to the lever, etc., but since the damper expands and contracts with the rotation of the lever, etc., the vibration energy applied to the cab, etc. is absorbed by the damper. Therefore, sudden movements of levers, etc. will not occur. Since the damper is installed between the lever, etc. and the floor, there is no need to make a hole in the floor.
（実施例）
第１図は本発明による走行用操作装置の一実施例を示す
側面図、第２図はその正面図、第３図は本実施例におい
て用いられるダンパの一例を示す半断面側面図、第４図
、第５図はそれぞれ本実施例を適用したキャブの一例を
示す側面図、平面図である。(Example) Fig. 1 is a side view showing an embodiment of the travel operating device according to the present invention, Fig. 2 is a front view thereof, and Fig. 3 is a half-sectional side view showing an example of a damper used in this embodiment. 4 and 5 are a side view and a plan view, respectively, showing an example of a cab to which this embodiment is applied.
まず第４図、第５図によりキャブ内における走行操作装
置の配置について説明すると、本実施例のキャブｌＯの
シート１１の前部には、建設機械の左右の走行装置にそ
れぞれ対応する走行パイロットバルブ２操作用の２本の
レバー３と、これと一体に回動する前記ペダル４とか取
付けられる。１２はフートレスト、１３．１４は旋回、
フロント操作、パケットまたは巻上操作等のためのレバ
ーであり、レバー１３．１４の相違と操作方向（前後、
左右）の相違により操作対象か異なる。First, to explain the arrangement of the travel control devices in the cab with reference to FIGS. Two levers 3 for two operations and the pedal 4, which rotates together with the levers, are attached. 12 is a footrest, 13.14 is a swivel,
This is a lever for front operation, packet or hoisting operation, etc., and the difference between levers 13 and 14 and the operation direction (front and rear,
The operation target differs depending on the difference between the left and right).
次に第１図、第２図により本実施例の走行操作装置につ
いて説明する。１５はダンパてあり、本実施例のダンパ
１５は、第３図に示すように、シリンダ１６側連結部１
７とピストンロフト１８側連結部１９とを有し、ピスト
ン２ｏにはシリンダ１６に対するピストン２０の移動に
より油２１が流動する細穴２２を有する。また、シリン
ダ１６の頂部には、ピストン２０の移動による全油室容
積の変化による油の欠乏を補うため、気体２３と共に油
２１を入れた補給室２４か形成され、補給室２４とピス
トン２０か収容された室との間の隔壁２５に細穴２７か
設けられている。２８は防塵膜である。このタンパ１５
は、収縮により細穴２２を通しての油２１の移動に流動
損失を生じるためにダンパ１５の急激な伸縮が防止され
るものである。Next, the traveling operation device of this embodiment will be explained with reference to FIGS. 1 and 2. 15 is a damper, and as shown in FIG.
7 and a connecting portion 19 on the piston loft 18 side, and the piston 2o has a thin hole 22 through which oil 21 flows as the piston 20 moves relative to the cylinder 16. Further, a replenishment chamber 24 containing oil 21 together with gas 23 is formed at the top of the cylinder 16 in order to compensate for the lack of oil due to a change in the total oil chamber volume due to the movement of the piston 20. A thin hole 27 is provided in the partition wall 25 between the housing chamber and the chamber. 28 is a dustproof film. This tamper 15
This is to prevent rapid expansion and contraction of the damper 15 because contraction causes flow loss in the movement of the oil 21 through the narrow hole 22.
第１図、第２図に示すように、本実施例においては、該
ダンパ１５のピストンロッド側連結部１９を、フロア１
にブラケット３０を介して回動自在に連結する。すなわ
ち、フロア１にボルト３１によりブラケット３０を固定
し、ボルト３４を連結部１９の穴にワッシャ３５を介し
て挿通し、該ボルト３４を前記ブラケット３０に固定し
たナツト３２に螺合して抜は止めすることにより、ダン
パ１５のピストンロッド側連結部１９をブラケット３０
に回動自在に連結する。一方、シリンダ側連結部１７は
、レバー３の側面に溶接したナツト３６に螺合するボル
ト３７およびワッシャ３８により、レバー３に回動自在
に連結する。As shown in FIGS. 1 and 2, in this embodiment, the piston rod side connecting portion 19 of the damper 15 is connected to the floor 1.
It is rotatably connected to via a bracket 30. That is, the bracket 30 is fixed to the floor 1 with the bolt 31, the bolt 34 is inserted into the hole of the connecting part 19 via the washer 35, and the bolt 34 is screwed into the nut 32 fixed to the bracket 30 and removed. By stopping, the piston rod side connecting portion 19 of the damper 15 is connected to the bracket 30.
Rotatably connects to. On the other hand, the cylinder side connecting portion 17 is rotatably connected to the lever 3 by a bolt 37 and a washer 38 that are screwed into a nut 36 welded to the side surface of the lever 3.
このタンパ１５は、第１図の実線で示すレバー３の中立
位置から、２点鎖線ａ、ｂに示すようにレバー３を前倒
し、あるいは後倒しにすることにより、ダンパ１５は収
縮あるいは伸長するか、前述のように、この伸縮に伴な
う油２１の細穴２２を流動する際の流動損失によってレ
バー３の急激は動きか防止され、微操作性か確保される
。This tamper 15 can be contracted or expanded by moving the lever 3 forward or backward as shown by two-dot chain lines a and b from the neutral position of the lever 3 shown by the solid line in FIG. As described above, the loss of flow when the oil 21 flows through the narrow hole 22 due to this expansion and contraction prevents the lever 3 from moving suddenly, and ensures fine operability.
この構成によれば、フロア１に穴を設ける必要がなくな
り、従って穴からの騒音や塵埃の浸入の防止に寄与でき
る。また、本実施例においては、第１図に示すように、
ダンパ１５の連結部１７．１９を結ぶ線と、連結部１７
とバルブシャフト２ａとを結ぶ線とのなす角度θを小さ
く形成する（好ましくは例えば２０度〜７０度の範囲に
設定する）ことにより、ダンパ１５のストローク（交×
２）を、第７図の従来構造におけるダンパ６のストロー
ク（Ｌｘ２）よりはるかに小さくし、その結果、ダンパ
１５の全長を短くし、これにより、第１図に示すように
、ペダル４の裏面のオペレータから目視てきない狭いス
ペースにおさめることかてき、美感の面でもキャブ１０
の居住性が向上させたものてあり、また第４図に示すよ
うに、キャブｌＯの前板部３９による取付は位置の制限
も受けない。なお、レバー３とタンパ１５との連結部１
７とバルブシャフト２ａとの間の距離を小さくすればダ
ンパ１５のストロークを小さくてきるか、動きの円滑さ
が損われるから、連結部１７はバルブシャフト２ａから
ある程度の距離を保つ必要があり１本実施例の構造は、
この距離を保ってしかもダンパ１５のストロークを小さ
くするものてあり、振動減衰作用を従来と同様にするた
め、ダンパ１５の断面積を従来より大として、細穴２２
に流す油２１の流量を確保する。According to this configuration, there is no need to provide a hole in the floor 1, and therefore it is possible to contribute to preventing noise and dust from entering through the hole. Furthermore, in this embodiment, as shown in FIG.
The line connecting the connecting parts 17 and 19 of the damper 15 and the connecting part 17
The stroke of the damper 15 (intersection x
2) is made much smaller than the stroke (Lx2) of the damper 6 in the conventional structure shown in FIG. 7, and as a result, the overall length of the damper 15 is shortened. The cab 10 can be placed in a narrow space where it cannot be seen by the operator, and from an aesthetic point of view, the cab 10
As shown in FIG. 4, the mounting of the cab lO by the front plate part 39 is not subject to any positional restrictions. In addition, the connection part 1 between the lever 3 and the tamper 15
If the distance between the damper 15 and the valve shaft 2a is reduced, the stroke of the damper 15 will be reduced, or the smoothness of the movement will be impaired, so the connecting portion 17 must be kept at a certain distance from the valve shaft 2a. The structure of this example is
While maintaining this distance, the stroke of the damper 15 is made smaller, and in order to maintain the same vibration damping effect as before, the cross-sectional area of the damper 15 is made larger than before, and the thin hole 22
Ensure the flow rate of oil 21 to flow.
第６図は本発明の他の実施例を示す側面図であり、ダン
パ１５の上端をレバー３に連結するのではなく、ペダル
４の裏面に設けたブラケット４０に連結したものである
０本実施例によっても同様の振動減衰作用、騒音および
塵埃浸入防止効果が得られる。FIG. 6 is a side view showing another embodiment of the present invention, in which the upper end of the damper 15 is not connected to the lever 3, but is connected to a bracket 40 provided on the back surface of the pedal 4. Similar vibration damping effects, noise and dust infiltration prevention effects can be obtained in any of the examples.
（発明の効果）
本発明によれば、ダンパの伸縮方向に合わせた動きをす
る従来のリンクを不要とし、走行用パイロットバルブの
バルブシャフトに取付けられるレバーまたはペダルとフ
ロアとの間に、振動減衰用のダンパを取付けたのて、フ
ロアにリンク挿通用の穴を設ける必要がなく、その結果
、キャブ内の騒音低減、塵埃浸入の防止に寄与てき、キ
ャブの居住性の向上に貢献する。また、リンクが不要と
なるため、コスト低減に寄与する。(Effects of the Invention) According to the present invention, there is no need for a conventional link that moves in accordance with the direction of expansion and contraction of the damper, and vibration damping is provided between the lever or pedal attached to the valve shaft of the pilot valve for travel and the floor. After installing the damper, there is no need to create a hole in the floor for link insertion, which contributes to reducing noise and preventing dust from entering the cab, contributing to improved cab comfort. Furthermore, since no links are required, it contributes to cost reduction.
第１図は本発明による走行操作装置の一実施例を示す側
面図、第２図はその正面図、第３図は本実施例において
用いられるダンパの一例を示す半断面側面図、第４図、
第５図はそれぞれ本実施例を適用したキャブの一例を示
す側面図、第６図は本発明の他の実施例を示す側面図、
第７図は従来の走行操作装置を示す側面図である。
１：フロア、２：走行用パイロットバルブ、２ａ：バル
ブシャフト、３ニレバー、４：ペダル、５：ボルト、１
０：キャブ、ｌｌ：シート、１５：ダンパ、１６：シリ
ンダ、１８：ピストンロット、２０：ピストン、２１：
油、２２′細穴、３０ニブラケツト、３１．３４：ボル
ト、３２．３６コナツト、３５．３８：ワッシャ、３７
：ボルトFIG. 1 is a side view showing an embodiment of the traveling operation device according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a half-sectional side view showing an example of a damper used in this embodiment, and FIG. 4 ,
FIG. 5 is a side view showing an example of a cab to which this embodiment is applied, and FIG. 6 is a side view showing another embodiment of the present invention.
FIG. 7 is a side view showing a conventional travel operating device. 1: floor, 2: pilot valve for driving, 2a: valve shaft, 3 lever, 4: pedal, 5: bolt, 1
0: Cab, ll: Seat, 15: Damper, 16: Cylinder, 18: Piston rod, 20: Piston, 21:
Oil, 22' small hole, 30 nib bracket, 31.34: bolt, 32.36 nut, 35.38: washer, 37
:bolt
Claims (1)
走行用パイロットバルブのバルブシャフトに取付けられ
るレバーまたはペダルとの間に、振動減衰用のダンパを
、ダンパ両端の連結点と前記バルブシャフトとを結ぶ線
がレバーあるいはペダルの回動の全範囲について３角形
を形成するように取付けたことを特徴とする建設機械用
走行操作装置。A bracket is provided on the floor of the cab, and a damper for vibration damping is installed between the bracket and a lever or pedal attached to the valve shaft of the pilot valve for driving, and a line connecting the connection point at both ends of the damper and the valve shaft. A travel operating device for construction machinery, characterized in that the levers or pedals are mounted so as to form a triangular shape over the entire rotational range of the lever or pedal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26272190A JPH04138928A (en) | 1990-09-28 | 1990-09-28 | Running operation device for construction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26272190A JPH04138928A (en) | 1990-09-28 | 1990-09-28 | Running operation device for construction machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04138928A true JPH04138928A (en) | 1992-05-13 |
Family
ID=17379672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26272190A Pending JPH04138928A (en) | 1990-09-28 | 1990-09-28 | Running operation device for construction machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04138928A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013241172A (en) * | 2012-04-26 | 2013-12-05 | Nsk Ltd | Position adjustment device for steering wheel |
| WO2014007304A1 (en) * | 2012-07-04 | 2014-01-09 | 日本精工株式会社 | Position adjustment device for steering wheel |
| JP2014012440A (en) * | 2012-07-04 | 2014-01-23 | Nsk Ltd | Position adjustment device for steering wheel |
| JP2014012441A (en) * | 2012-07-04 | 2014-01-23 | Nsk Ltd | Position adjustment device for steering wheel |
| JP2014108721A (en) * | 2012-12-03 | 2014-06-12 | Nsk Ltd | Position adjusting device of steering wheel |
| JP2014108720A (en) * | 2012-12-03 | 2014-06-12 | Nsk Ltd | Position adjusting device of steering wheel |
-
1990
- 1990-09-28 JP JP26272190A patent/JPH04138928A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013241172A (en) * | 2012-04-26 | 2013-12-05 | Nsk Ltd | Position adjustment device for steering wheel |
| WO2014007304A1 (en) * | 2012-07-04 | 2014-01-09 | 日本精工株式会社 | Position adjustment device for steering wheel |
| JP2014012440A (en) * | 2012-07-04 | 2014-01-23 | Nsk Ltd | Position adjustment device for steering wheel |
| JP2014012441A (en) * | 2012-07-04 | 2014-01-23 | Nsk Ltd | Position adjustment device for steering wheel |
| CN103648886A (en) * | 2012-07-04 | 2014-03-19 | 日本精工株式会社 | Position adjustment device for steering wheel |
| US9180901B2 (en) | 2012-07-04 | 2015-11-10 | Nsk Ltd. | Steering wheel position adjusting apparatus |
| JP2014108721A (en) * | 2012-12-03 | 2014-06-12 | Nsk Ltd | Position adjusting device of steering wheel |
| JP2014108720A (en) * | 2012-12-03 | 2014-06-12 | Nsk Ltd | Position adjusting device of steering wheel |
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