JPH0476406B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for confirming the mounting position of a position detector for measuring the position of a working member installed in an agricultural machine such as a tractor or combine harvester. In particular, the present invention relates to a device for confirming the mounting position of a position detector, which allows the reference position of a position detector to accurately and easily match the reference position of a work member.

[Prior Art] Conventionally, testers and checkers are known as devices for confirming the mounting position of this type of position detector. For example, when controlling the vertical position, horizontal inclination angle, longitudinal inclination angle, etc. of a ground-based work equipment connected to a tractor to values specified by the operator, the vertical rotation angle of the lift arm of the work equipment lifting mechanism is controlled. Measurement is generally performed using a potentiometer, and the position detector is set by aligning the reference position of the potentiometer or other position detector accurately with the reference position of the operating member such as the lift arm. It was extremely difficult to do this in practice. For example, matching the mounting screws on the case of the position detector with the screw holes on the machine body, and matching the mounting screw holes on the detection shaft of the position detector with the mounting screw holes on the operating member side will only give you a rough idea of the position. Unable to match, the output of the position detector was measured using a checker or tester after temporary installation, and the detector was installed at the position where the measured value matched the reference position.

[Problems to be Solved by the Invention] The above-mentioned conventional testers and checkers require attachment/detachment operations, and in order to attach the detector to a reference position, the detector must be moved slightly while the tester or checker is watched closely. Checking the installation status of the position detector using a tester, etc., especially under adverse conditions in the field, such as on a tractor or combine harvester, is not only troublesome but also requires a great deal of time and effort. Ta. Therefore, a technical problem has arisen that must be solved in order to easily and accurately match the reference position of the actuating member and the reference position of the detector without using a tester or checker, and to install the detector. Therefore, it is an object of the present invention to solve this problem.

[Means for Solving the Problems] The present invention has been proposed to achieve the above object, and includes an analog position setting device for setting the position of an actuating member, and an analog position setting device for detecting the position of the actuating member. In an agricultural machine with a built-in microcomputer that controls an operating member according to a difference between a set value of the setting device and a measured value of the position detector, the input of the microcomputer is A mode switching mechanism is provided on the side for switching between two modes: an automatic control state and a position detector installation confirmation state, and an alarm device is connected to the output side, and the mode switching mechanism is in the position detector installation confirmation mode. When the measurement value of the position detector at a specific position of the actuating member matches the setting value stored in the memory device of the microcomputer, this matching state is notified by the alarm device. It is an object of the present invention to provide a device for confirming the mounting position of a position detector in an agricultural machine, characterized in that it is provided with a control means so as to be able to notify the user.

[Operation] Operate the mode switching mechanism connected to the microcomputer to switch from normal control mode to position detector installation confirmation mode. In this state, a position detector is attached to the actuating member that is stopped at a specific position, and an operator holds the position detector in his hand and moves it minutely. The position detector is then fixed at the position notified by the notification device. By doing this, it is possible to match the set value of the position setting device preset in the storage device of the microcomputer with the measured value of the position detector, and to install the position sensor at a predetermined position. . Therefore, the position detector can be easily and accurately installed without using a conventional tester or checker.

[Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3 of the attached drawings. For convenience of explanation, conventionally known technical matters will also be explained at the same time. In the figure, 1 is a tractor, and as shown in Figs. connected by a work machine connecting link mechanism 6 consisting of links 5, 5;
An electromagnetic control valve V is installed in the lift cylinder 7 of the hydraulic lifting mechanism.
When pressure oil is supplied through the
When the lift cylinder 7 moves upward and the pressure oil in the lift cylinder 7 is discharged into the tank via the electromagnetic control valve V, the working machine 2 of the rotary tilling device along with the lift arms 3 and 3
is arranged to descend. The above-mentioned control operation of the electromagnetic control valve V is performed by operating the operation switch 9 to the raised position 10 or to the lowered position 11, respectively, based on commands from the control means 12 constituted by a microcomputer. Solenoid control valve V
This is done by selectively operating the lifting solenoid valve and the lowering solenoid valve that constitute the lift arm 3, which is the operating member M.
The lift arm angle as a measured value is measured by a position detector S such as a rotary potentiometer, and based on this lift arm angle, the ascending position of the work equipment 2, left/right tilt angle control, etc. is to be carried out.

The operating panel 13 of the tractor 1 is provided with a buzzer 14 and an indicator lamp 15 as an example of the notification device P, and the mode switching mechanism 16 is switched to a mode for checking the installation of the position detector S, as shown in the flowchart in FIG. As shown in , when the operation switch 9 is operated in the direction in which the actuating member M is raised, it is checked whether the lift arm angle, which is the measured value, is increasing every time a certain period of time set by the timer 17 has elapsed. The control means 12 determines (step) the maximum lifting position of the lift arm 3 (this is regulated by the structure of the lift cylinder 7 and lift piston 8,
For example, the relief valve range is set by the operation of a limit switch). The control means 12 determines whether the measured value is within a predetermined range including the set reference value (step), and if the measured value is within the predetermined range, the buzzer 14 of the notification device P is activated.
is sounded and the display lamp 15 lights up to notify that it is within the predetermined range (step). and,
Since a setting reference value is set in the control means 12 so that the measured value can be slightly corrected by the correction means 18 such as a volume, when the operator performs a correction operation of the correction means (volume dial operation), ), the control means 12 determines whether the corrected measurement value matches the reference value (step), and if they match, the buzzer 14 of the notification device P stops sounding and the display lamp 15 continues to light up. become. However, it will be notified that the measured value matches the reference value (step), and the lifting operation of the operation switch 9 will be stopped and the installation position confirmation work will be completed.

In addition to the above-mentioned combination of the buzzer 14 and indicator lamp 15, the notification device P may also include, for example, two indicator lamps, with the indicator lamp 1 lighting up when the measured value is within a predetermined range and matching the check standard value. Alternatively, one indicator lamp may be used as a notification device, and may be configured so that it lights up within a predetermined range and repeatedly blinks when the check reference value is met. However, the present invention is not limited to the embodiments described above.

Further, the controller 12 is configured to control the electromagnetic control valve V so that the actuating member M moves to the set value of the position setting device 1, which is constituted by a volume or the like.

In this embodiment, the notification device is activated if the position detector S matches the reference value stored in the storage device of the microcomputer when the lift arm is at the maximum raised position.
The notification device may be activated when the lift arm is in the lowest position.

[Effects of the Invention] As detailed in the above embodiment, the present invention switches the mode switching mechanism connected to the input side of the microcomputer to the position detector installation confirmation mode, and the operation stops at a specific position. The operator moves the position detector with respect to the member while aligning it manually, and when the measured value of the position detector matches the setting value set in advance in the memory device of the microcomputer, this matching state is notified. Adjust the device to notify you.

Therefore, if the position detector is installed at the position notified by the notification device, the setting value of the position setting device and the measured value of the position detector can be made to match, so it is possible to match the setting value of the position setting device with the measured value of the position detector. Installation work can be performed without using a checker or the like, and the position detector can be easily and accurately adjusted or installed even in places where inspection, adjustment, and assembly are difficult, such as in the field. The actuating member can be accurately controlled by switching the control device to an automatic control state mode of the actuating member,
This can also contribute to improving work efficiency.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, with FIG. 1 being a control block diagram, FIG. 2 being a flowchart, and FIG. 3 being a side view of the tractor. Explanation of symbols: 12...control means, 16...mode switching mechanism, 18...correction means, P...notification device, I...position setter, M...operation member.

Claims (1)

[Claims] 1.Equipped with an analog position setting device that sets the position of the actuating member and an analog position detector that detects the position of the actuating member, and detecting the difference between the set value of the setting device and the measured value of the position detector. In an agricultural machine with a built-in microcomputer that controls actuating members according to the conditions, a mode switching mechanism is provided on the input side of the microcomputer for switching between two modes: an automatic control state and a position detector installation confirmation state. established,
An alarm device is connected to the output side, and when the mode switching mechanism is set to the position detector installation confirmation mode, the measured value of the position detector at a specific position of the actuating member is detected by the microcomputer. A device for confirming the mounting position of a position detector in an agricultural machine, characterized in that a control means is provided so that when the value matches a set value stored in a storage device, this matching state can be notified by an alarm device. .