JPH02195802A - Rolling unit of tractor-working machine - Google Patents

Abstract

PURPOSE:To reduce vertical movements of the side end parts of a working unit and improve safety of operation by equipping a rolling control device capable of reducing the limit of rolling control angle according to a movement of the working unit in the transverse direction. CONSTITUTION:In case a working unit 2 is located at the center rear part of the car body 1, the rolling control area by a rolling control unit is set to the full value of the control angle. According to movement of the working unit in the transverse direction to the car body, the correction amount of the rolling control unit 3 is increased based on detection by a transverse movement sensor 22 and the area of rolling control by the rolling control unit is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a rolling device for a tractor working machine.

PRIOR ART AND PROBLEMS TO BE SOLVED BY THE INVENTION A rolling control working machine that rolls the working posture of a working device connected to the vehicle body so that it is in a horizontal horizontal posture regardless of the horizontal inclination of the vehicle body. In a configuration in which the working device moves laterally to the left and right with respect to the vehicle body, this rolling may be limited. For example, when cultivating a greenhouse using a tractor, the tilling device is moved to one side relative to the tractor body when cultivating the left and right ends. The lateral end of the tilling device moves up and down significantly, often damaging the greenhouse.

Means for Solving the Problems This invention provides a work bag r! for a vehicle body (1). 1 (2) is provided so as to be movable laterally and freely rollable, and
A rolling device for a tractor working machine is provided with a rolling limiting device (3) that narrows the limit of the rolling control angle by moving the working device (2) laterally.

Functions and Effects of the Invention The working device (2) can be controlled in rolling relative to the vehicle body (1) and can be moved laterally. Rolling control is performed by tilting the vehicle body (1) left and right, and the working device (2) is rolled on the opposite side to the tilt of the vehicle body (1), taking a horizontal position on the left and right, parallel to the soil surface. Maintain a good working posture.

Further, when the working position of the working device (2) is moved laterally with respect to the vehicle body (1), the rolling action is performed with the working device (2) being deviated laterally. A rolling limit value rt (3) acts on this rolling control, and the further the working device (2) moves outward with respect to the vehicle body (1), the narrower the limit of the rolling control angle by the rolling limiting device (3) becomes. Therefore, the amount of vertical movement of the lateral end of the work device (2) is reduced, and contact with obstacles is reduced, allowing safe work to be performed.

Embodiment When turning, the tractor body (1) is equipped with an engine (4) and a front wheel (6) that can be freely steered by a steering handle (5) at the front, and a driver's seat (7) at the rear. , and the rear wheels (8) are mounted on an axle (9) to provide a four-wheel drive configuration. A connecting frame (12) is connected to the rear end of the vehicle body (1) by a pair of left and right lower links (10) and a top link (11) so as to be able to rise and fall freely, and a lift arm ( 13) and the lower link (lO
) with the lift rod (14) to connect the connecting frame (
12) to control the elevation. These left and right lift rods (14
) is provided with a rolling cylinder (15) that expands and contracts by hydraulic pressure, and the rolling cylinder (15)
The lower link (10) on one side is moved up and down by the expansion and contraction of the connecting frame (12) to control the rolling of the connecting frame (12) with respect to the vehicle body (1). (16) is a horizontal sensor that constitutes a rolling control device (CPU) that detects the left and right inclination angle of the vehicle body (1) and controls expansion and contraction of the rolling cylinder (15). This rolling control device (CPU) has a microcomputer.

The working device (2) has a tilling shaft (18) having tilling claws (17).
) is laterally mounted on the power take-off shaft (1) on the vehicle body (1) side.
9) constitutes a tilling device that rotates and tills the soil. The body (20) of this working device (2) is a connecting frame (1
2), and is configured to be horizontally movable relative to the connecting frame (12) by adjusting the rotation of the helical shaft (21) by a motor. or,
For this lateral movement adjustment, a telescopic cylinder that expands and contracts by hydraulic pressure may be provided instead of the spiral shaft (21). (22) is a lateral movement sensor that detects lateral movement of the aircraft body (20), and by detecting the amount of lateral deviation of this lateral movement sensor (22) with respect to the vehicle body (1), the rolling control device (CPU
), and the larger the detected amount of lateral deviation, the larger the correction amount for limiting the expansion and contraction of the rolling cylinder (15). Also, this lateral movement sensor (
22) reaches a certain value, the expansion and contraction control of the rolling cylinder (15) is stopped, and the working device (2
) may be configured as soon as the rolling stops.

(23) is a leveling plate provided on the rear side of the tillage cover (24), which levels the tilled soil surface. (24) is a rolling control valve that is controlled to open and close by a rolling control unit (CPU), and is provided in the hydraulic circuit of the rolling cylinder (15).

When the working device (2) is located at the center of the rear side of the vehicle body (1), the rolling control area by the rolling control device (CPU) is determined by the control angle minus the cup.
) moves laterally with respect to the vehicle body (1), the rolling restriction device (
3) becomes larger and the rolling control device (C
Even if the area of rolling control by PU) is narrowed and the working device (2) is attempted to be largely controlled by rolling,
This rolling limit! Even if the rolling control is performed within this limit area without rolling beyond the limit angle according to (3), when attempting to exceed the limit area angle, it will stop at this limit angle position. , the work will be carried out.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, with FIG. 1 being a side view and FIG. 2 being a partial control block diagram. In the figure, reference numeral (1) indicates a vehicle body, (2) indicates a working device, and (3) indicates a rolling restriction device.

Claims (1)

[Claims] A working device (2) is provided to be movable laterally and rollable with respect to the vehicle body (1), and the working device (2)
A rolling device for a tractor working machine, comprising a rolling limiting device (3) that narrows the limit of the rolling control angle by moving in the lateral direction.