JPS6428449U - - Google Patents
Info
- Publication number
- JPS6428449U JPS6428449U JP12388487U JP12388487U JPS6428449U JP S6428449 U JPS6428449 U JP S6428449U JP 12388487 U JP12388487 U JP 12388487U JP 12388487 U JP12388487 U JP 12388487U JP S6428449 U JPS6428449 U JP S6428449U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- arm
- work implement
- bell crank
- working tool
- 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)
- Shovels (AREA)
Description
図面は本考案の実施例を示しており、第１図は
全体構成及び動作を示す側面図、第２，３図はブ
ーム中途部の拡大側面図と斜視図、第４図は制御
機構の拡大斜視図、第５図は制御機構の断面平面
図、第６図は第５図の―線断面図、第７図は
第５図の―線断面図である。
１…フロントフローダ（ローダ装置）、３…走
行車体、４…取付台、５…マスト、６…枢軸、７
…ブーム、８…枢軸、９…バケツト（作業具）、
１１…ブームシリンダ、１２…バケツトシリンダ
、１９…横軸、２１…第１アーム、２２…第２ア
ーム、２５…係合部、２８…ベルクランク、３２
…制御機構、３４…ブーム制御弁、３５…バケツ
ト制御弁、３７…操作レバー、４０…第１揺動子
、４２…第２揺動子、４８…球継手、４９…ロツ
ド、５２…連動手段、Ｂ…持上げ姿勢。
The drawings show an embodiment of the present invention. Figure 1 is a side view showing the overall structure and operation, Figures 2 and 3 are an enlarged side view and perspective view of the middle part of the boom, and Figure 4 is an enlarged view of the control mechanism. 5 is a sectional plan view of the control mechanism, FIG. 6 is a sectional view taken along the line -- in FIG. 5, and FIG. 7 is a sectional view taken along the line -- in FIG. 1...Front loader (loader device), 3...Traveling vehicle body, 4...Mounting base, 5...Mast, 6...Pivot, 7
…boom, 8…pivot, 9…bucket (working tool),
DESCRIPTION OF SYMBOLS 11... Boom cylinder, 12... Bucket cylinder, 19... Horizontal shaft, 21... First arm, 22... Second arm, 25... Engaging portion, 28... Bell crank, 32
...Control mechanism, 34...Boom control valve, 35...Bucket control valve, 37...Operation lever, 40...First rocker, 42...Second rocker, 48...Ball joint, 49...Rod, 52...Interlocking means , B... Lifting posture.
Claims (1)
ブーム７を枢支してブームシリンダ１１で昇降自
在とし、ブーム７の先端に枢軸８を介して作業具
９を枢支して作業具シリンダ１２で上下回動自在
とし、両シリンダ１１，１２を作動させる制御弁
３４，３５を第１、第２揺動子４０，４２に連結
し、両揺動子４０，４２を１本の操作レバー３７
で独立及び同時に回動操作可能にしたローダ装置
において、 前記ブーム７の中途部に作業具９の上下動が伝
達される第２アーム２２とこの第２アーム２２と
相対回動自在で且つ作業具９が略持上げ姿勢Ｂま
で上向き回動したときに係合可能となる第１アー
ム２１とを枢支し、ブーム７の枢軸６に第１アー
ム２１とリンク２９を介して連結されたベルクラ
ンク２８を枢支し、このベルクランク２８と作業
具制御弁３５用第２揺動子４２とをロツドで連動
連結し、作業具９が略持上げ姿勢Ｂになつた後に
ブーム７の上昇に伴なつて揺動するベルクランク
２８の動きで作業具制御弁３５がダンプ動作され
ることを特徴とするローダ装置の作業具姿勢保持
機構。[Claims for Utility Model Registration] A boom 7 is pivoted to a mast 5 fixed to the traveling vehicle body 3 via a pivot 6 and can be raised and lowered by a boom cylinder 11, and a working tool 9 is attached to the tip of the boom 7 via a pivot 8. control valves 34 and 35 for operating both cylinders 11 and 12 are connected to the first and second rockers 40 and 42, and both rockers 40 , 42 with one operating lever 37
In a loader device that can be independently and simultaneously rotated, the second arm 22 transmits the vertical movement of the working tool 9 to the middle part of the boom 7, and the second arm 22 is rotatable relative to the second arm 22 and the working tool A bell crank 28 is connected to the pivot shaft 6 of the boom 7 via a link 29 to the first arm 21, which can be engaged when the boom 9 rotates upward to approximately the lifting position B. The bell crank 28 and the second oscillator 42 for the work implement control valve 35 are interlocked and connected by a rod, and after the work implement 9 has reached approximately the lifting position B, as the boom 7 rises. A work implement posture holding mechanism for a loader device, characterized in that a work implement control valve 35 is operated in a dumping manner by the movement of a swinging bell crank 28.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12388487U JPH0352836Y2 (en) | 1987-08-12 | 1987-08-12 | |
| CA000573634A CA1298813C (en) | 1987-08-12 | 1988-08-02 | Apparatus for controlling posture of work implement of loader |
| US07/230,997 US4825568A (en) | 1987-08-12 | 1988-08-11 | Apparatus for controlling posture of work implement of loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12388487U JPH0352836Y2 (en) | 1987-08-12 | 1987-08-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6428449U true JPS6428449U (en) | 1989-02-20 |
| JPH0352836Y2 JPH0352836Y2 (en) | 1991-11-18 |
Family
ID=31373141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12388487U Expired JPH0352836Y2 (en) | 1987-08-12 | 1987-08-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352836Y2 (en) |
-
1987
- 1987-08-12 JP JP12388487U patent/JPH0352836Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0352836Y2 (en) | 1991-11-18 |
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