JPS6057802B2 - mobile agricultural machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mobile agricultural machine in which a ground working device such as a tilling device is connected to the rear of the machine such as a tractor body so that it can be raised and lowered from the ground and its position can be changed in the lateral direction of the machine.

In such mobile agricultural machines, in order to reduce the headland area as much as possible, the machine body is turned close to the ridge. The end collides with the ridge, causing damage to the working equipment and damage to the ridge.

likely to cause harm. In particular, in order to make it possible to change the position of the work equipment in the lateral direction, if a lateral position change mechanism such as a link mechanism is interposed between the machine and the work equipment, the work equipment may protrude rearward. Since the amount becomes large, the above-mentioned defective situation is more likely to occur when turning. In view of this, an object of the present invention is to make it possible to reliably avoid the occurrence of the above-described defective situation when the aircraft turns as close to the ridge as possible.

The mobile agricultural machine according to the present invention, as described at the beginning, includes a mechanism for forcibly changing the position of the working device in the direction of the machine in conjunction with a steering operation of a certain angle or more on the machine. It is characterized by the fact that it is provided.

In other words, when a steering operation of a certain angle or more, that is, when the aircraft turns around a headland, the working device can be forced to automatically change its position in the direction of the aircraft direction.
Even if the working device is positioned relatively far protruding backwards from the machine, the outer end of the working device can be pivoted inward from the swing trajectory of the outermost part of the machine. , the space required for turning the entire working machine can be reduced.

Therefore, during normal traveling operations such as steering the aircraft along cultivated land, the working equipment does not change its position unexpectedly in the lateral direction, and the intended operation can be carried out reliably and efficiently. *It has also become possible to reliably avoid troubles such as damage to the working equipment and damage to the ridges caused by the working equipment colliding with the ridges when making headland turns with the machine brought as close as possible to the ridges. In particular, since the work equipment is configured to operate in conjunction with the steering operation of the handle only when the work equipment is in the ground-up position, deformation and damage to the work equipment due to lateral movement in the ground-down work position can be prevented. can. Hereinafter, embodiments of the present invention will be described based on the drawings. The front two wheels 4, 4 can be steered by operating the handle 5, and the two rear wheels 6, 6 can be steered by operating the handle 5 and the steering clutch brake operating the rear two wheels 6, 6. In a cultivating machine, a tilling rotary 2 (an example of a working device) is connected to the rear of a tractor-based machine 1 capable of making sudden turns, which can be raised and lowered from the ground via a link mechanism 7, and can be repositioned in the lateral direction of the machine. A mechanism 3 is provided for forcibly changing the position of the rotary 2 in the direction of the aircraft direction in conjunction with a steering operation of a fixed angle of 0 or more in the machine 1 when the rotor 1J2 is in the ground-up attitude.

The mechanism 3 includes a rotary switch-based detector 8 that detects when the handle 5 is rotated by a fixed angle θ (approximately 30 degrees) or more left and right with respect to the straight-ahead posture, and a rotary switch-based detector 8 that detects when the handle 5 is rotated by a fixed angle θ (approximately 30 degrees) or more with respect to the straight-ahead posture, and a rotary switch-based detector 8 that detects when the handle 5 is rotated by a fixed angle θ (approximately 30 degrees) or more with respect to the straight-ahead posture; A discriminator 10 is provided with a detector 9 for detecting the position, and outputs a control signal only when both of these detectors 8 and 9 are in a detection operating state.
and a steering direction discriminator 11 are provided, and both of these discriminators 10,
A control electromagnetic valve 13 for a hydraulic cylinder 12 serving as a rotary lateral movement drive device for forcibly driving the rotary 2 in the lateral direction of the machine body based on a signal from 11 is controlled so that the working device 2 moves in the direction of the machine direction. It is configured to switch to

[Brief explanation of drawings]

The drawings show an embodiment of the mobile agricultural machine according to the present invention, and the first
The figure is an overall plan view, and FIG. 2 is a control block diagram. 1... This machine, 2... Working equipment, 8, 9
......detector, 10,11...discriminator,
12... Drive device.

Claims (1)

[Claims] 1. A mobile agricultural machine in which a working device 2 is connected to the rear of the machine 1 so that it can be raised and lowered from the ground and its position can be changed in the lateral direction of the machine, and a detector 8 that detects a steering operation of a handle 5 beyond a certain angle; A detector 9 for detecting the rise of the working device 2 from the ground is provided, and a discriminator 10 for outputting a control signal only when both of the detectors 8 and 9 are in the detection operating state; A steering direction discriminator 11 for discriminating whether the steering direction has been operated is provided, and both of these discriminators 10,
The present invention is characterized in that it is configured to drive a drive device 12 that changes the position of the work device 2 in the lateral direction of the machine body in order to change the position of the work device 2 in the direction of the machine direction based on a signal from the machine 11. Mobile agricultural machine.