JPS63160503A - Rising and falling control apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a sensor that detects the level of a ground work device that is connected to a vehicle body so as to be able to rise and fall, and a setting device that sets the lever μ of the ground work device. Control direction determining means is provided for outputting at least eight types of signals, including a rising signal, a stop signal, and a descending signal, in order to raise, stop, or lower the ground work equipment by inputting signals from each of them. The present invention relates to a lift control device, and specifically relates to a technique for adjusting a setting device, a sensor, etc.

[Prior art] Taking an agricultural tractor as an example, the vehicle body is equipped with the setting device, sensors, etc., and if these sensors are configured as analog type buttons such as a button W meter, these The sensors are placed under predetermined conditions and adjusted to output a set voltage by manipulating semi-fixed resistors (references not listed).

[Problem that the invention seeks to solve]

Also, considering the work involved in adjusting sensors as mentioned above, the values of the signals output from these sensors when adjusting sensors often differ depending on the sensor. If a tester is used for adjustment, different numerical values must be read depending on each sensor, making adjustment training cumbersome.

An object of the present invention is to construct a mechanism for easily adjusting sensors provided in a vehicle body as simply as possible.

Means for Solving Problem C] The present invention is characterized in that, in an outside control device having a snow-raised configuration, a signal from the sensor or setting device is inputted to one of the input systems of the control direction determining means, and the other an input system of the control direction discriminating means and an input system of the control direction discriminating means so as to input a signal from the correction signal generating means to the control direction discriminating means and outputting the at least eight types of signals from the control direction discriminating means to a display mechanism indicating an operating direction for correction; The output system is configured to be switchable, and its functions and effects are as follows.

[For production]

For example, if the above characteristics are configured as shown in FIG. 1, the engine (not shown)
When the lift arm sensor (10) is stopped, as shown in the flowchart of Fig.
1. The plowing depth setter sleep cover sensor (a signal from the river selected for correction and a signal for the selected one are input to the control direction determining means (D), and this Operating tools (20a) and (21a) for adjusting the respective sensors according to the result of the determination of means (2).

(22m) and (28a) can be determined (steps $2615 to #12 and #27).

〔Effect of the invention〕

Therefore, of ground work equipment! 4- By using a part of the descent control system to determine the direction of adjustment of sensors, a mechanism was obtained that allows adjustment work to be done easily without the hassle of reading numerical values, as is the case when using a tester, for example. .

In particular, the present invention does not eliminate the need for testers, and if the control system is configured with a microprocessor, by storing the correction signal value in the control program, the correction signal can actually be output as a voltage. There is also an effect that the configuration is extremely simplified since there is no need to obtain the same.

In this case, the signal from the sensor system is converted into a digital signal, and the operation direction of the display mechanism is determined by calculating this signal with the digitalized correction signal value.

[Example 1 Embodiments of the present invention will be described below based on the drawings.

As shown in Fig. 4, a lift arm (3) that swings up and down by the operation of a hydraulic cylinder (2) is provided at the rear of a car body +11 equipped with an engine (not shown), and
The lift arm (
3) is provided, and a control box (7) for controlling the operation of the lift arm (3) is provided on the upper surface of the rear fender (6) to constitute an agricultural tofuctor.

As shown in the figure, an eight-point link mechanism (8) is provided at the rear end of the vehicle body (fl), which is lowered by the lift arm (3).
) is connected to the rotary type ground work equipment (9), and the lift arm (3) is connected to the ground work equipment from its swing angle! The ground work device (9) is equipped with a lift arm sensor (1@) that detects the level of the t9+ relative to the vehicle body, and the ground work device (9) is equipped with a lift arm sensor (1@) that detects the level of the ground work device (9) relative to the vehicle body. 9) Cover sensor (11) that detects plowing depth
The operating tool (5) is further provided with an operating tool sensor for detecting the amount of operation thereof.

As shown in FIG. 1, the control box (7) includes a control means (C) comprising a microprocessor (CPU) and a control means (C) that amplifies the output signal from the control means (C) to control the hydraulic cylinder ( In addition to installing a driver α41 that can be said to be an electromagnetic pulp screw for 2), a ground work device (
C) is equipped with a diamond tvlJFA for setting the plowing depth. Further, the control means (C) includes an operating tool sensor 4, a lift arm sensor [01, a cover sensor αη, and the diamond μ
The input interface α inputs the voltage signal from the plowing depth setting device α0 operated by αG, the microprocessor (CPU), and the memory (in which the control program is set).
) and output interface 09, and further includes a control interface 09.
The control direction determination means ( D).

In addition, the agricultural tractor has the operating tool sensor (2), lift arm sensor α0. Cover sensor αυ, plowing depth setting device αQ
The control program is configured such that the adjustment can be performed using a part of the control program.

In other words, the input interface Q7) includes the operating tool sensor @, lift arm sensor 01, cover sensor 0η,
The first one that corrects the output signal value from each plowing depth setter a0\
, second, third, and fourth correctors (1).

e") e!2'5 e (231 system to which the signal is input, Gunyu switch (2 Shu) to select the target to be adjusted, and the engine operating state is determined based on the engine's lubricating oil pressure. A system is formed in which the signal from the O/L/Russier switch 9) that is detected is input.

In addition, as shown in the same figure or FIG. 8, on the output side from the output interface α, the four correctors (1), (
2υ, (2 examples of 4 light emitting diodes indicating the selected corrector out of 22J3, □□□, trowel and 8 light emitting diodes H, e'71 indicating the operating direction of the selected corrector
．． e27) A display mechanism consisting of two drivers (
An output system for 5) is formed, and the control for raising and lowering the ground work device (9) and the control for operating the corrector are configured as follows.

As shown in Figure 2, when the key switch (not shown) for starting the engine is operated, the oil drain is
A signal from the train switch (8) is input (#1 step), and it is determined whether the entrainer is in operation (#2 step).

When the engine starts, it sets the flag to 1 and (
Step #8), and input signals from the operating tool sensor @ and lift arm sensor αQ (Step #4).

Next, control directions are divided into three types (#
As a result, if the control direction is upward or downward, it is determined whether the operation is intermittent operation or continuous operation (Steps #6 and #7), and each of the five types of control operations is further determined. ni r4J, r8J, ``2J, r
The numbers lJ and rOJ are set and held in a register (not shown) (steps #8 to #12).

Next, the flag is determined (step #18), and the signals from the tilling depth setting device α0 and cover sensor αη are input (#1
Similarly to the case of the above-mentioned control, the control direction is divided into eight types based on the signals from the tilling depth setting device 0Q and the cover sensor (B) (step #15), and as a result, the control If the direction is upward or downward, it is determined whether the operation is intermittent or continuous (#
16 and 17 steps), and further, r4J, r8J, r2J, rlJ for each of the five types of control operations.
, set the rOJ number and hold it in a register different from the one described above (steps #18 to #22).

Further, steps #5 to #12 are referred to as control direction determination means (D) for position control, and steps #15 to #22 are referred to as control direction determination means (D) for automatic parallel rack control. Compare the numbers set in means (D) and (D), and if there is a relationship in size, control is performed according to the larger number, and if there is no relationship in size, control is performed according to the number. The lifting control system is configured as follows (#
28 nuts 1).

Continuous operation means that the electromagnetic valve (to) is held in the operating position on the raising or lowering side, and the ground work device (9) is raised and lowered at high speed, and intermittent operation means that the solenoid valve ( 9) to the operating position on the ascending or descending side with predetermined time intervals set.
) is raised and lowered at low speed, and the position control and automatic plowing depth control are performed by operating the operating tool (5) to the high setting position (6), and ,
It is configured so that automatic plowing depth control can be automatically performed by operating the plowing machine to the low setting position (lower setting position).

Furthermore, the sensors are configured so that they can be adjusted while the key switch is turned on and the engine is stopped, and the flag is set to O when the stopped state of the engine is detected in step #2. Setting #24 step),
Next, the signals from the sensors selected by pressing the push switch candle and the correction signals for the sensors selected in this way are input (#25, #26
step), the operating direction is determined by the control direction determining means ρ) for position control;
), the operating direction of the selected one of the corrector (A) and υI (?J I (to)) is output to the display mechanism (E) (#27 step ).

The display mechanism (E) is attached to the display spring lv@ as shown in FIG. , 2nd. 8th. Fourth corrector (1), 嬶),
(20m), (21m), (
22m) and (28a) are arranged, and the sensors to be selected can be switched by pressing the push switch C24).

Also, the adjustment direction of the corrector is 8 diodes.

Properness is indicated when the center of the property is lit, and the condition is close to proper when the center and side lights are lit, and it is indicated by the side lights being lit. It also indicates the need for operation in the direction indicated by the lighting, which is far away from the proper state when only the side lights are lit.

By the way, for example, when adjusting the operating tool sensor @,
Signals from the operating tool sensor @ and the first corrector are input after A/D conversion, and the signal from the operating tool sensor 4 is set to a corrected value by calculation of this input signal, The operation direction is determined by comparing the values of the digital signal set in this way and the correction digital signal held in the memory.

Note that step #27 is referred to as the correction signal generating means.

[Another example]

In addition to the embodiments described above, the present invention may be configured such that the display mechanism is detachably attached to the vehicle body, the correction signal generation means may be configured to actually output the correction signal, and the control direction discrimination It is also possible to configure the means as a hard circuit consisting of a logic circuit, a comparator, etc.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the elevation control device according to the present invention, and the first embodiment
Figure 2 is a block diagram showing the configuration of the lift control device, Figure 2 is a flowchart showing the operation of the control means, Figure 8 is a diagram showing the display panel, and Figure 4 is a side view showing the rear of the tractor in a working state. . (1)...Vehicle body, (9)...Ground work equipment, ρ)...Control direction determining means, (D)...
...Display mechanism.

Claims (1)

[Claims] A sensor for detecting the level of a ground work device (9) connected to the vehicle body (1) so as to be able to rise and fall freely;
By inputting the signals from each setting device that sets the level of (9), at least three types of signals, a rise signal, a stop signal, and a fall signal, are generated to raise, stop, or lower the ground work device (9). An elevator control device is provided with a control direction determining means (D) that outputs a signal from the sensor or the setting device, and a signal from the sensor or setting device is input to one of the input systems of the control direction determining means (D), and A signal from the correction signal generating means (D) is inputted to the other side, and a control direction determining means (
D) to output the at least eight types of signals from
An elevator control device in which an input system and an output system of a control direction determining means (D) are configured to be switchable.