JPH0728065Y2 - Safety control device for the rut distance adjustment mechanism in the working vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a safety control device for a rut distance adjusting mechanism in a working traveling vehicle such as a combine.

[Problems to be Solved by Prior Art and Invention] Generally, in a traveling machine for work, when this is a combine, for example, when dividing work or ridge work, it is usually located on the side of the cut land. There is a case in which the moving body that moves is stepped on the uncut stem culm or climbs up to the ridge, so that the moving body on the side of the already cut land can be moved to the other side to adjust the rut distance, for example, It is known in Japanese Laid-Open Patent Publication No. 61-5717.

However, in such a case, for example, when loading and unloading on a truck bed using a road plate, if the operator adjusts the rutted distance due to an erroneous operation, There is a risk that the traveling body that has moved to the vehicle will fall off the road plate and the traveling body will fall, and it is proposed to deal with this.

[Means for Solving the Problem] In view of the above-mentioned circumstances, the present invention was devised with the object of providing a safety control device for a rut distance adjustment mechanism in a work vehicle capable of eliminating these drawbacks. In the working traveling machine body, a running body that moves in the left-right direction with respect to the machine body is provided, and a rut distance adjustment mechanism that can adjust the rut distance between the left and right traveling bodies is provided. A forward / backward inclination sensor that detects forward / backward inclination of the traveling body is connected to the control unit that controls the operation of the mechanism.
When the control unit receives a detection signal indicating that the front-rear tilt sensor is tilted by a preset angle or more, it regulates the operation control of the rut distance adjustment mechanism to control the current rut distance. It is characterized in that a rut distance maintaining means for maintaining the is provided.

The present invention is capable of improving running stability and safety with this configuration.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a combine traveling machine body, and the traveling machine body 1 includes a pre-processing unit 2 for pre-processing such as cutting stem stalks, a threshing unit 3 for threshing cut stalks, and a discharging unit. The post-processing section 4 for performing post-processing such as shredding the culm, the grain storage section 5 for storing the selected grain, and the like are all conventional.

Reference numerals 6 and 7 are a pair of left and right crawler type traveling bodies. The traveling body 6 is on the uncut land side, and the traveling body 7 is on the already cut land side (driving seat side). The traveling body 6 is of a fixed type integrally assembled to the machine body frame 1a. On the other hand, in the traveling body 7 on the already-cutted land side (moving side), the roller 8a provided at the upper end of the traveling frame 8 has the body frame 1a.
By rolling the guide rail 1b provided at, it is configured to be movable left and right. Further, a hydraulic cylinder 9 is provided between one side portion of the machine body frame 1a and the upper end portion of the traveling frame 8.
Further, a pantograph type link mechanism 9a is provided between the other side portion of the machine body frame 1a and the traveling frame 8, and the traveling body 7 is operated by the operation of the link mechanism 9a accompanying the expansion and contraction operation of the hydraulic cylinder 9. It is designed to move left and right.

On the other hand, an operating lever 11 for moving the traveling body 7 is provided on the left side of the driver's seat 10. When the operating lever 11 is operated, the operation is performed by the wide side lever position detection switch 12
And the narrow side lever position detection switch 13 detects this, and the control unit 14 that receives this detection signal controls the solenoid 15a for contraction and the solenoid 15b for expansion of the electromagnetic valve 15 to turn on and off, whereby the hydraulic cylinder 9 is operated. The extension / contraction operation is performed to move the traveling body 7 left and right.

Next, the control procedure of the control unit 14 will be described. Control unit 14
Is composed of a CPU, a memory, an interface, etc., but as shown in FIG. 4, the switches such as the lever position detecting switches 12, 13, the ignition switch 16, the automatic / manual switching switch 17, etc. And tilt sensor 1
8, input the detection signal from the sensors such as the left and right inclination sensor 19, the speed detection sensor 20, the uncut land detection sensor 21, etc., and based on these detection signals, output the operation signal to the solenoids 15a, 15b to output the hydraulic pressure. The expansion / contraction control of the cylinder 9 is performed.

And when the control starts, after the initial settings are made,
First, it is determined whether or not the engine is in a driving state. If the engine is in a stopped state, the current rut distance (traveling body width) is maintained. To be judged. When it is determined that the traveling body 1 is tilted forward or backward by a predetermined angle or more, both solenoids 15a and 15b are turned on.
It is turned off to maintain the current rut distance. Further, when the traveling body 1 is not tilted back and forth, the state of the automatic-manual switching switch 17 is judged, and when it is OFF, the current rut distance is maintained, and when it is in manual mode. Means that the solenoids 15a and 15b are turned on and off respectively according to the operation of the operation lever 11, but if automatic is selected, then whether the traveling speed is below a predetermined speed or not It is determined whether or not it is in the split work state, that is, whether the left and right uncut land detection sensors 21 are in the detection state, and further whether the lateral inclination of the traveling machine body 1 is less than or equal to a predetermined angle. When all of these are determined to be YES, the extension solenoid 15b is turned on to move the traveling body 7 to the narrow side, but when NO is determined in any of the cases, the reduction solenoid 15a is turned on. The traveling body 7 is moved to the wide side by the above. That is, the rut distance is narrowed during the splitting work in which the traveling body 7 may step on the uncut stem culm, but in other cases, the traveling distance of the traveling body 1 is controlled to be stable and the rut distance is controlled to be wide. It is about to do.

In the embodiment of the present invention configured as described above, the traveling body 1 is tilted forward and backward by a predetermined angle, that is,
Even if the operating lever 11 for adjusting the rutted distance is operated by a tentative error when the vehicle is traveling on a road plate that extends between the road and the truck bed or between the ridge and the field, the hydraulic cylinder 9 will not operate. It does not operate, and the traveling bodies 6 and 7 maintain the same rut distance.

As described above, in the embodiment of the present invention, the traveling body 7 can be moved in the left-right direction to adjust the rutted distance as needed. In the tilted state, the lateral movement of the traveling body 7 is restricted. As a result, even if the operating lever 11 is accidentally operated while traveling on the road plate, such as when loading and unloading on the truck bed. Since the traveling body 7 does not move left and right and the rut distance is maintained as it is, it is possible to prevent the traveling body 1 from falling due to the rut distance adjustment due to an erroneous operation. Can be improved.

Moreover, except during the splitting work in which the traveling body 7 may step on the uncut stem culm (especially in the state of left-right inclination), the traveling body 7
Since it is possible to perform automatic control for moving the vehicle to a wider side, which is superior in traveling stability, stable traveling can always be performed and safer work can be performed.

[Advantages] In short, since the present invention is configured as described above, the running body is configured to be movable in the left and right directions so that the rut distance can be adjusted. When the vehicle is tilted forward or backward by more than the preset angle, the rut distance adjustment mechanism operates based on the detection signal input from the front-back tilt sensor even if the rudder distance adjustment operation is performed with the operating lever. Control is restricted, and the rutted distance is maintained as it is.As a result, when the aircraft is greatly inclined forward and backward, such as when loading and unloading with a road plate to the truck, etc. It is possible to prevent the running body from being disengaged from the road plate due to an inadvertent change in the rut distance.

[Brief description of drawings]

1 shows an embodiment of a safety control device for a rut distance adjustment mechanism in a working vehicle according to the present invention. FIG. 1 is an overall perspective view of a combine, and FIG. 2 is a frame part. FIG. 3 is a schematic perspective view, FIG. 3 is a hydraulic circuit diagram of the rut distance adjustment mechanism, and FIG. 4 is a block diagram showing the configuration of the control mechanism.
The figure is a flow chart showing the control procedure. In the figure, 1 is a traveling machine body, 7 is a moving side traveling body, 9 is a hydraulic cylinder, 9a is a link mechanism, 14 is a control unit, 18 is a front-back inclination sensor, and 19 is a left-right inclination sensor.

Claims (1)

[Scope of utility model registration request] 1. A working traveling machine body comprising a traveling body which moves in the left-right direction with respect to the machine body and which is provided with a rut distance adjustment mechanism capable of adjusting the rut distance between the left and right traveling bodies. A forward / backward inclination sensor for detecting forward / backward inclination of the traveling body is connected to a control unit for controlling the operation of the vehicle, and the control unit detects that the forward / backward inclination sensor is inclined at a preset angle or more. When a signal is input, the rut distance adjusting means is provided to regulate the operation control of the rut distance adjusting mechanism to maintain the current rut distance. Mechanism safety control device.