Work vehicle

Abstract

A work vehicle with a working implement, comprising: a control lever 49 for controlling the working implement 3, the control lever being rockably disposed laterally of a driver's seat 16 mounted on a vehicle body 7; a control valve 52 disposed laterally of the vehicle body for controlling actuators 32, 44 that drive the working implement; and interlocking links 56, 57 for interlocking the control lever and spools 54, 55 of the control valve 52, and transmitting rocking of the control lever to the spools; wherein the control lever 49 and the spools 54, 55 are staggered transversely and longitudinally of the vehicle body 7, and the interlocking links 56, 57 are bent, one end of each interlocking link being connected to a first link connector 72, 68c connected to the control lever, the other end of each interlocking link being connected to a second link connector connected to one of the spools.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side view of a control apparatus for a front loader;

FIG. 2 is a side view showing an arrangement of the control apparatus for the front loader;

FIG. 3 is a front view showing the arrangement of the control apparatus for the front loader;

FIG. 4 is a front view of the control apparatus for the front loader;

FIG. 5 is a plan view of the control apparatus for the front loader;

FIG. 6 is a front view of a pivotal support portion of a loader control lever;

FIG. 7 is a side view of the pivotal support portion of the loader control lever;

FIG. 8 is a plan view of the pivotal support portion of the loader control lever;

FIG. 9 is a side view of a control valve and adjacent components;

FIG. 10 is a front view of the control valve and adjacent components;

FIG. 11 is a plan view of the control valve and adjacent components;

FIG. 12 is a view, seen from an obliquely rearward direction, of an interlock portion of an interlocking link and a spool;

FIG. 13 is a side view of a work vehicle;

FIG. 14 is a plan view of a vehicle body and a working implement mounting frame;

FIG. 15 is a side view of the front loader and a feedback mechanism;

FIG. 16 is a plan view of the feedback mechanism;

FIG. 17 is an enlarged view of relays of the feedback mechanism; and

FIG. 18 is a side view showing booms in swung states.

Claims

1. A work vehicle with a working implement, comprising: a control lever for controlling the working implement, said control lever being rockably disposed laterally of a driver's seat mounted on a vehicle body;a control valve disposed laterally of the vehicle body for controlling actuators that drive said working implement; andinterlocking links for interlocking said control lever and spools of said control valve, and transmitting rocking of said control lever to said spools;wherein said control lever and said spools are staggered transversely and longitudinally of said vehicle body, and said interlocking links are bent, one end of each interlocking link being connected to a first link connector connected to said control lever, the other end of each interlocking link being connected to a second link connector connected to one of said spools.

2. A work vehicle as defined in claim 1, wherein said second link connector is a rocking arm rockable about an axis, said one of said spools being linearly movable by rocking of said rocking arm.

3. A work vehicle as defined in claim 2, further comprising soil spill preventive means operable, when a bucket provided for said working implement inclines toward the said driver's seat in excess of a predetermined degree, to transmit movement of said bucket to said rocking arm, and to operate said one of the spools through the rocking arm for stopping the movement of said bucket.

4. A work vehicle as defined in claim 3, wherein said soil spill preventive means includes an interlocking member disposed adjacent the rocking arm to be rockable about a pivot, and a feedback mechanism for feeding the movement of said bucket back to said interlocking member, said interlocking member being engageable with an engaging portion of the rocking arm to rock said rocking arm.