JPH06245610A - Structure for controlling working machine - Google Patents

Abstract

PURPOSE:To readily check the operation state of an operation switch and an analog output sensor in a simple structure without using an outside exclusive check device. CONSTITUTION:The control structure of a working vehicle equipped with a controller 13 for inputting the outputted information of an operation switch or analog output sensor, electrically driving plural work control targets in prescribed states on the basis of the inputted information, and driving a display lamp 15a for informing the control states to an operator is characterized by disposing a switch 30 capable of switching the controller 13 into a control mode for checking the operation and changing the displaying content of the display lamp 15a in a state that the operator can recognize the inputted state changed by the switching of the operation switch or by the output change of the analogous output sensor in the state set to a control mode for checking the operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention inputs an output from an operation switch or an analog output sensor, and electrically drives and controls a plurality of work controlled objects to a predetermined state based on the input information. The present invention relates to a control structure for a work vehicle including a control device that drives a notification unit that notifies a driver of a control state.

[0002]

2. Description of the Related Art In the control structure of a work vehicle described above, conventionally, in the process of assembling a product, wiring for electrically connecting the operation switch or analog output sensor to the control device and connecting the control device to the controlled object are connected. To check whether electrical connections such as wiring are normally made, connect check pins to each connection terminal and input the output signal at each terminal to a dedicated check device, The detection is performed by detecting whether or not the electric signal is output as set.

[0003]

Recently, work vehicles having a structure in which various actuators to be controlled are automatically controlled by a control device such as a microcomputer based on output information from human operation tools and various detection sensors have been put into practical use. However, in such a control structure, it is necessary to inspect whether or not electric connection such as soldering is normally performed in the manufacturing process, but in the inspection method according to the conventional method, it is complicated. There is a drawback in that a dedicated check device having a different circuit configuration is required and the cost is increased, and there is also an adverse effect that extra work time is required for mounting the check device, and there is room for improvement. The present invention aims to eliminate the above-mentioned problems.

[0004]

According to a characteristic construction of the present invention, in the work vehicle control structure described at the beginning, a switching operation means is provided for switching the control device to an operation check control mode, and the operation check is carried out. When the operation control mode is set, the notification content of the notification means is changed in a state in which the operator can recognize the input change state according to the switching operation of the operation switch or the output change operation of the analog output sensor. It is provided with an operation check control means.

[0005]

When the switching operation means is set to the operation check mode after the product having been electrically connected has been assembled, the control device is set to the operation check mode which is incorporated in itself, and the operation check mode is set. In this state, by artificially changing the output signal state of each of the operation switch and the analog output sensor for giving the original control input signal, the control device can change the output signal state based on the change of these input signals. The notification content of the notification means such as class or voice generation means is controlled so as to be changed. As a result, the operator can recognize that the signal from the operation switch or the analog output sensor is reliably input to the control device, and the inspection can be performed.

[0006]

Therefore, it is possible to perform an operation check such as whether or not the connection between the operation switch or the analog output sensor and the control device is normally made, or whether the operation switch or the analog output sensor itself is out of order. , The structure can be easily achieved without any trouble by effectively utilizing the members incorporated in the original product without using an external dedicated check device.

[0007]

Embodiments will be described below with reference to the drawings. Figure 3
Fig. 1 shows a riding-type rice transplanter, which is an example of a working machine. This rice transplanter is configured by connecting a seedling planting device 2 to a rear portion of a riding type traveling body via a link mechanism 1 so as to be capable of driving and elevating and rolling around a longitudinal axis. The traveling machine body has an engine 3 mounted in a hood at the front of the machine body, the power of the engine 3 is transmitted to a mission case 5 via a belt type continuously variable transmission 4, and is supplied from the mission case 5 to front and rear wheels 6, 7. On the other hand, the transmission system is configured to supply the seedling planting device 2, and the seedling planting work can be performed while the machine body is running.

As shown in FIG. 1, the belt type continuously variable transmission 4 extends over a drive pulley 8 mounted on the output shaft 3a of the engine 3 and a driven pulley 9 mounted on the input shaft 5a of the transmission case 5. While the transmission belt 10 is wound, the pulleys 8 and 9 are provided in a split pulley type in which the pulley intervals can be changed, and the pulley intervals are integrally operated by an electric cylinder CY [an example of an actuator]. By changing it upside down by the rising cam mechanism 11,
The belt winding diameters of the respective pulleys 8 and 9 are changed so that the speed change operation can be continuously performed.

The electric cylinder CY in the continuously variable transmission 4 is driven and controlled by a control device 13 equipped with a microcomputer, and the control device 13 inputs an input value from a speed setter 12 composed of a potentiometer and the electric cylinder CY. Stroke sensor 1 that detects the actual operating stroke
The electric cylinder CY is feedback-controlled so that the detected value of 4 matches. The operation stroke of the electric cylinder CY is set so that the machine traveling speed and the set speed correspond to each other. Therefore, the operator can arbitrarily set the machine body traveling speed by operating the speed setting device 12. When the value detected by the engine speed detection sensor falls to the first set value, the electric cylinder CY is decelerated regardless of the value set by the speed setter 12, and the speed is increased when the electric cylinder CY is restored to the second set value. The vehicle speed control means A is provided in the form of a control program. The vehicle speed control ON / OFF switch 15 is configured to be selectively turned on and off, and the vehicle speed control mode display lamp 16 is turned on when the control device is set to the vehicle speed control mode. . The on / off operation state of the vehicle speed control on / off switch 15 is displayed by an on / off display lamp 15a.

The seedling planting device 2 comprises a seedling stand 18 which reciprocates laterally in a lateral direction with a constant stroke, a planting mechanism 19 for taking out one seedling from the lower end of the seedling stand 18 and planting it in a field. Plural grounding floats 20 that perform ground leveling while following the grounding on the mud surface, and left and right sides of the seedling planting device 2 that draw a running index line in the unplanted area according to the planting work. And the like, and the wire drawing marker 21 is linked with the wire so as to be automatically stored in conjunction with the raising operation of the seedling planting device 2, and is configured to be automatically held by a lock mechanism (not shown) in the stored state. Along with the switching operation of the reverse switching type marker switch 22, the locked state of the lock mechanism is selectively released by the electromagnetic solenoid SL, and as the seedling planting device 2 descends, the wire drawing marker 2 on the desired side. There are configured to switch to the working attitude. The marker switch 22 is urged to return to the neutral state, and based on the operation in either direction, the corresponding electromagnetic solenoid SL is energized for a certain time to perform the unlock operation. The raising / lowering operation of the seedling planting device 3 is configured so as to be manually operated based on the operation of the forward / backward swing operation type artificial raising / lowering lever 23 provided in the body control section. The amount of forward / backward operation of the artificial lift lever 23 is detected by a potentiometer-type lever sensor 24, and the controller 13 discriminates the output by the zone for each set level, and an electromagnetic signal is applied to the lift cylinder 25 so that the operating state corresponds to each operating position. The hydraulic control valve V is switched and controlled. That is, when the elevating lever 23 is operated to the “raised position”, the seedling planting device 2 is forcibly raised to the maximum position. "Neutral position"
When operated to, the seedling planting device 2 keeps the current level,
When operated to the "down position", the seedling planting device 2 descends until it contacts the mud surface. When operated to the “planting position”, the seedling planting device 2 is grounded and lowered, and the electric motor 2
6 is driven to engage and operate the planting clutch 27, and the planting work state is set. Further, a rocking lever type elevating operation switch SW1 is provided, and is configured to be switchable between a state in which the seedling planting device 2 is forcibly raised to a maximum raised position and a state in which it is grounded down based on the operation of the switch SW1. is there. The raising / lowering operation switch SW1 is configured to be operable only when the raising / lowering lever 23 is operated to the "automatic position". The depth of the seedling planting, that is, the height of the seedling planting device 2 against the mud surface is always kept constant.
It is provided with an automatic lifting control means B for driving and controlling the device 5. That is, the amount of vertical swing caused by the variation in ground height is detected above the front side of the ground float 20 located in the center of the left and right of the ground float 20 that is swingably provided around the rear horizontal axis X. A potentiometer type float sensor 28 is provided, and the control device 13 switches and controls the electromagnetic hydraulic control valve V of the lift cylinder 25 so that the detection value of the float sensor 28 matches the set value of the potentiometer type sensitivity adjuster 29. is there. It should be noted that this automatic raising / lowering control operates only when the raising / lowering lever 23 is set to the "planting position", the "lowering position" or the "automatic position".

The controller 13 is provided with a mode changeover switch 30 as a changeover operation means capable of changing over to the operation check control mode, and the switches 15 and 22 are set in the operation check control mode. , SW1 switching operation or output change operation of potentiometer type setting devices 12, 29 or sensors 24, 28 as analog output sensors, the input change state is input in a state in which the operator can recognize. An operation check control means C for changing the display content of the off display lamp 15a [an example of notification means] is provided. The operation check control means C is provided in advance in the control device 13 in the form of a control program, and the control device 13 controls as follows. As shown in FIG. 2, when the changeover switch 30 is turned on, the operation check mode is set [steps 1 and 2]. When the operation check mode is set, the operator manually operates each switch and each potentiometer. The type sensors are sequentially operated manually to change the signal [step 3]. Then, the control device 13 reads the input signal of each switch and each sensor, and if the output of each switch is changed, the ON / OFF display lamp 15a is lit and displayed at a predetermined interval, and if not changed, the lamp 15a is changed.
Is turned off [steps 4 to 7]. Similarly, if there is a change in the output of the analog sensors, the on / off indicator lamp 15a
Is turned on at a predetermined interval, and if not changed, the on / off display lamp 15a is turned off [steps 8 to 10]. In this way, failure diagnosis of switches and sensors and disconnection of wiring can be checked.

It should be noted that although reference numerals are given in the claims for facilitating the comparison with the drawings, the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a control block diagram.

[Fig. 2] Control flowchart

[Figure 3] Side view of rice transplanter

[Explanation of symbols]

 13 control device 15a notification means 30 switching operation means C operation check control means

Claims (1)

[Claims] 1. An output from an operation switch or an analog output sensor is input, and based on the input information, a plurality of work-controlled objects are electrically driven and controlled to a predetermined state, and the control state is set by an operator. A control structure of a work vehicle comprising a control device (13) for driving a notification means (15a) for making a notification to an operator, the switching operation means (30) capable of switching the control device (13) to an operation check control mode. And in a state in which the operation check control mode is set, the input change state can be recognized by the operator in accordance with a switching operation of the operation switch or an output change operation of the analog output sensor. A control structure for a work vehicle comprising an operation check control means (C) for changing the notification content of the notification means (15a).