JPH0284858U

JPH0284858U -

Info

Publication number: JPH0284858U
Application number: JP16157088U
Authority: JP
Priority date: 1988-12-12
Filing date: 1988-12-12
Publication date: 1990-07-02
Anticipated expiration: 2003-12-12
Also published as: JPH0649631Y2

Description

[Brief explanation of drawings]

第１図乃至第６図は本考案の実施例を示してお
り、第１図は全体構成を示す側面図、第２図はブ
ーム中途部の拡大側面図、第３図は制御機構の拡
大斜視図、第４図は制御機構の断面平面図、第５
図は第４図−線断面矢視図、第６図は第４図
−線断面矢視図である。１……フロントローダ（ローダ装置）、３……
走行車体、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、２８……揺動部材、２９……リ
ンク、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、５２……連動手段、Ｂ
……持上げ姿勢。 Figures 1 to 6 show an embodiment of the present invention, with Figure 1 being a side view showing the overall configuration, Figure 2 being an enlarged side view of the middle part of the boom, and Figure 3 being an enlarged perspective view of the control mechanism. Figure 4 is a sectional plan view of the control mechanism, Figure 5 is a cross-sectional plan view of the control mechanism.
The figures are a cross-sectional view taken along the line in FIG. 4, and FIG. 6 is a cross-sectional view taken along the line shown in FIG. 4. 1...Front loader (loader device), 3...
Traveling vehicle body, 5...mast, 6...pivot, 7...boom, 8...pivot, 9...bucket (working tool),
11...Boom cylinder, 12...Bucket cylinder, 19...Horizontal shaft, 21...First arm, 22
... Second arm, 28 ... Swing member, 29 ... Link, 34 ... Boom control valve, 35 ... Bucket control valve, 37 ... Operation lever, 40 ... First rocker, 42 ... Second rocker, 52... Interlocking means, B
...Lifting posture.

Claims

[Scope of utility model registration request]

A boom 7 is pivotally supported on a mast 5 fixed to the traveling vehicle body 3 via a pivot 6, and is movable up and down by a boom cylinder 11. A work tool 9 is pivoted on the tip of the boom 7 via a pivot 8, and a work tool cylinder. The control valves 34 and 35 which operate both cylinders 11 and 12 are movable up and down at 12, and are connected to the first and second rockers 40.
, 42, in which both rockers 40, 42 can be independently and simultaneously rotated by a single operating lever 37. A second arm 22 is pivotally supported, and a first arm 21 is rotatable relative to the second arm 22 and can be engaged when the work tool 9 is rotated upward to a substantially lifting position B.
A swinging member 28 connected to the first arm 21 via a link 29 is pivotally supported on the mast 5 side, and the swinging member 28 and the second swinger 42 for the work implement control valve 35 are connected by an interlocking means 52. After the work tool 9 has reached the substantially lifting position B, the link 29 is pulled as the boom 7 rises, and the link 2
9. A work tool posture holding mechanism for a loader device, characterized in that a work tool control valve 35 is subjected to a dumping operation by the movement of a swinging member 28 that swings in conjunction with the pulling operation of step 9.