JP3244056B2 - Working unit control device of agricultural work machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work unit control device provided in an agricultural work machine such as a tractor, a combine, a dryer, a rice huller, and the like. 2. Description of the Related Art As a prior art, a plurality of detectors for controlling a working unit are connected to an input line, and an actuator for controlling a working unit is connected to an output line, as disclosed in Japanese Patent Application Laid-Open No. 57-182806. There is disclosed a working unit control device for an agricultural work machine having a controller in which a monitor circuit is connected to an output line of the controller. In this device, when an abnormal output is generated from the controller, the abnormal output is displayed on a monitor circuit. [0003] The monitor circuit of the above-mentioned conventional device is for displaying the presence or absence of the occurrence of an abnormal output, but is not for displaying the state of a detector, a setting device or the like.
For this reason, the occurrence cannot be confirmed until after the occurrence of the abnormality, and it must be dealt with by post-processing. [0004] In order to solve the above problems, the present invention takes the following technical means. That is, a plurality of detectors for working unit control and a setting device are connected to the input side of the controller of the main unit having a CPU, and the actuator for working unit control is connected to the output side of the controller.
In addition, the above-mentioned controller of the unit has a CPU and a display unit.
Unit control of agricultural work machine with communicable monitor connected
In the device, the work unit control device is
Therefore, while configuring , the detector,
It is configured to display the input information from the setting device , and
A switching unit for switching between these displays is configured to provide a working unit control device for an agricultural working machine. The work unit control device for an agricultural work machine according to the present invention transmits data of a plurality of work unit control detectors or setting devices connected to the input line of the machine side controller to the machine side controller. The data is transmitted to the monitor connected to the output line, and the data of the detector or the setting device designated by the data designation means is displayed on the display unit of the monitor. [0006] The work unit control device includes a plurality of controllers.
The input information is operated by the operator's changeover switch means.
It is arbitrarily switched and displayed depending on the operation. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. 1 to 4
1 shows an example of an agricultural working machine according to the present invention. This agricultural work machine 1 is provided with a 3P link type connecting device (hereinafter referred to as a 3P hitch) 3 at the rear of the tractor main machine 2, and a rotary cultivator 5 as a working unit is mounted on the 3P hitch. The 3P hitch 3 has one top link 10 having a front end pivotally connected to the tractor main unit 2 and a pair of left and right lower links 11, 11 '.
And the hydraulic lift arms 12, 12 of the tractor machine 2
A lift rod 14 and a lift rod cylinder 15 attached to the distal end of the lower link 11 are connected to an intermediate portion between the lower links 11, 11 '. The rotary cultivator 5 as a working part of the agricultural work machine 1 connects an upper end of a mounting frame 19 to a rear end of a top link 10 and connects a lower part of the mounting frame 19 to lower links 11, 1.
It is attached to the 3P hitch 3 by connecting to the rear end of 1 '. The pair of left and right lift arms 12, 12 is mounted on a hollow shaft 23 provided horizontally above a machine frame 22 of the tractor main body 2. A drive arm 24 is provided integrally with the hollow shaft 23, and a lifting hydraulic cylinder is provided at the tip of the drive arm 24.
26 piston rods 26a are connected. When the hydraulic cylinder 26 is extended, the lift arms 12, 12 are turned upward, and when the hydraulic cylinder 26 is contracted, the lift arms 12, 12 are turned downward. A rotating shaft 30 is provided inside the hollow shaft 23 so as to be rotatable with respect to the hollow shaft 23. The sensor arms 31 and 31 'are provided integrally. A sensor rod 32 is provided on the sensor arm 31 on the lift rod 14 side (left side), and a sensor arm 31 'is provided on the lift rod cylinder 20 side (right side).
, A cylinder type stroke sensor 33 is attached. The lower ends of the sensor rod 32 and the stroke sensor 33 are connected to the lower links 11, 11 'at positions closer to the tractor main unit. FIG. 7 shows the construction of the working unit control device 80 of the agricultural working machine. Controllers 81 and 82 for serially inputting and outputting data as time elapses in a control box installed at an appropriate position of the tractor main unit 2 or the rotary tiller 5;
82 are provided with connectors 84 and 85 attached thereto. The controllers 81 and 82 include a tilt sensor 46 for detecting the degree of inclination of the tractor main body 2 in the left-right direction, a lift arm angle sensor 47 for detecting the amount of rotation of the lift arms 12, 12, the stroke sensor 33, and the top link 10. Draft sensor 49 for detecting the applied load, depth sensor 50 for detecting the tillage depth of rotary tiller 5, and upper limit detection sensor 51 for detecting that the lift arm 12 has rotated to a position short of the upper limit position in the mechanically rotatable range. A position lever 53 for setting the vertical position of the lift arm 12, a tilt angle setting device 5 for setting a horizontal inclination (for example, horizontal) of the rotary tiller 5 as a working part.
4, tillage setting device 55 for setting the tillage depth of the rotary tiller 5,
Upper limiter that sets the upper rotation limit of the lift arm 12
56 is connected, processes data supplied from these, and sends a command signal to a proportional solenoid valve for rolling 58 and a proportional solenoid valve 59 for lifting and lowering. In the figure, reference numeral 60 denotes a manual switch for lifting and lowering the lift arm, and reference numeral 61 denotes a sensitivity switch. A monitor 63 ′ installed outside the control box 41 is connected to the connector 44.
The connection of the monitor 63 'to the connectors 84 and 85 is freely attachable and detachable, and other monitors and microcomputers can be connected instead. The data supplied from the various setting devices and sensors (detectors) to the controllers 81 and 82 are transmitted as serial signals to the monitor 63 'together with a clock signal. As shown in FIG. 5 , the serial signal A is transferred bit by bit on the clock signal B. The serial signal A transferred to the monitor 63 'is input to the CPU 65 via the photocoupler 64. When the operator designates desired data (set values, sensor values) with the monitor switch 67, the data is converted into appropriate numerical values and displayed on the display unit 68. An alarm buzzer 70 is provided on the monitor 63. For example, when the inclination sensor 46 exceeds ± 20 degrees, an alarm is sounded and the inclination is displayed, and the manual elevating switch 60 is operated on the lower side. When the detected value of the lift arm angle sensor 47 rises to the upper limit set value, the lift arm angle is displayed and an alarm sounds. In addition, the lift arm reaches the set position of the position lever 53 during work by draft control and depth control.
When 12,12 drops, the lift arm angle is displayed and an alarm sounds. In the case of the control system of this example, the setting by the position lever 52 has the highest priority, and the lift arms 12, 12 do not drop below this set value. That is, the buzzer notifies that the automatic control (draft control, depth control) does not work any more. When transmitting transmission data as 30-byte information, the transmission format is as shown in Table 1, for example. [Table 1] As is apparent from this table, the transmission data includes not only the sensor value of the detector but also a different model code for each model such as a tractor, a combine, and a rice transplanter.
By transmitting the model code, the CPU on the monitor side determines the relevant model, and performs an appropriate display accordingly. As described above, in the working unit control device 80 , the detachable monitor 63 'is provided separately from the controllers 81 and 82, so that the controller box containing the controller is small and the installation place is small. You can choose relatively freely. Further, the monitor 63 'may be installed anywhere. For example, if the monitor 63' is provided in the cockpit, the data value at that time can be checked at any time during the operation, and appropriate control can be performed. The working unit control device 80 shown in FIG. 7 is provided with a controller 81 for tilt control and a controller 82 for elevation control separately. The controller 81 includes sensors and setting devices for tilt control. A lifting control sensor, a setting device, and the like are connected to 82 as shown in the figure.
An output command is issued from the controller 81 to the rolling valve 58 and an output command is issued from the controller 81 to the elevating valve 59 based on the data to be input. The monitor 63 'is provided with a changeover switch 87, and the operator selects and receives these inclination control data and elevation control data. In this embodiment, a tractor provided with a cultivator as a working unit has been described, and a controller for tilt control and elevation control of the cultivator in the left-right direction has been described. By providing a connector for the working unit control controller, the necessary data can be transmitted to an external monitor. Further, it goes without saying that the communication between the controller and the monitor may be performed not only by a serial signal as in the above embodiment but also by a parallel signal. As described above, the working unit control apparatus for an agricultural working machine according to the present invention has a plurality of working unit control detectors and setting devices on the input side of the machine side controller having a CPU. And an actuator for controlling the working unit is connected to the output side of the controller.
Agricultural machine with a monitor and a monitor equipped with a display unit communicably connected
In the working unit control device of
And switch means for displaying input information from the detector and the setting device during actual work , and switching between these displays.
Since the configuration and can display detector information and setter information in actual operation, there is an effect that can check in advance the abnormality detector and the like by monitoring the change situation. Also, input information from a plurality of controllers
Can be switched and displayed.
You can get fast.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of an agricultural working machine. FIG. 2 is a perspective view of a main part. FIG. 3 is a plan view of a main part. FIG. 4 is a side view of a main part. FIG. 5 shows waveforms of a serial signal and a clock signal.
FIG. FIG. 6 is an external view of a monitor. FIG. 7 is a block diagram of a working unit control device. [Description of Signs] 1 ... Agricultural work machine 2 ... Tractor 3 ... 3P link hitch 5 ... Rotary cultivator (work unit) 80 ... Work unit control device 81,82 ... Controller 84,85 ... Connector 63 ' ... Monitor

Continuation of the front page (56) References JP-A-62-48305 (JP, A) JP-A-61-89482 (JP, A) JP-A-60-154164 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01B 63/00 A01C 11/02 A01D 41/12 A01D 69/00 G05B 24/02

Claims (1)

(57) [Claims] A plurality of working unit control detectors and setting devices are connected to the input side of the main unit controller having a CPU, and the working unit control actuator is connected to the output side of the controller.
In addition, the above-mentioned controller of the unit has a CPU and a display unit.
Unit control of agricultural work machine with communicable monitor connected
In the device, the work unit control device is
Therefore, while configuring , the detector,
It is configured to display the input information from the setting device , and
A work unit control device for an agricultural work machine, comprising a changeover switch means for switching between these displays .