JPH0644345Y2 - Automatic handling depth control system for combine harvesters - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial field of application The present invention relates to an automatic control device of the handling depth in a combine, and more specifically, it detects the conveyed grain culm by the main sensor and the napped grain culm by the direction sensor. The present invention relates to a handling depth automatic control device configured to drive a handling depth adjusting and transporting unit to control the handling depth.

(B) Conventional technology Conventionally, an automatic handling depth control device that automatically controls the handling depth has a main sensor that is located on a straight line to the handling depth sensor that detects the tip portion of the grain culm. It is used as an operation switch, and the operating depth automatic control unit is activated or stopped by turning the switch on or off, or a main sensor is provided before or after the handling depth sensor, and the handling depth is turned on by turning on the upstream main sensor. The automatic control unit is activated, and the automatic control is stopped by turning off the main sensor on the downstream side.

However, the one in which the main sensor is provided in a straight line with respect to the above-mentioned handling depth sensor, is affected by the conveying posture of the culm, and the conveying posture is disturbed and operates in the deep-treating direction at the beginning and the end of mowing. Therefore, it becomes an extremely deep handling, causing a problem that the threshing load increases, and when the culm that has become deep handling is sent to the knotter part, the culm hits the guide plate and becomes slanted,
It will hinder the work of binding the culm.

Further, as shown in Japanese Patent Laid-Open No. 58-43713, a main sensor detects a grain culm by an automatic handling depth control unit that drives a handling depth adjusting and transporting unit based on a signal from the handling depth sensor. An automatic handling depth control device has been proposed which is configured to be activated by the above-mentioned operation and to be switched to non-operation after a predetermined time has passed since the direction sensor no longer senses the grain culm.

(C) Problems to be solved by the invention By the way, the above-mentioned automatic handling depth control device controls the combine so that the combine travels properly along the grain culm row by the grain culm detection of the direction sensor during the automatic direction control. However, when the main switch for automatic direction control is turned off to perform manual cutting work, for example, when cutting a line, it is difficult to see the uncut side of the pretreatment unit from the driver's seat located to the right of the traveling machine body. The operator tends to steer the uncut side divider to the outside of the uncut side grain stem. For this reason, the direction sensor on the uncut side is disengaged from the grain stalks to change from the non-free state to the free state, and the handling depth control is released. Alternatively, the deep threshing state may occur, and if the deep threshing is performed too much, a problem such as clogging of the automatic threshing device may occur.

(D) Means for Solving the Problems The present invention is intended to solve the above-mentioned problems, and for example, as shown in FIG.
Based on the signal from 9, the automatic handling depth control device that drives the handling depth adjusting and transporting unit 19 to adjust the handling depth, and the direction sensors 5 and 6 provided in the preprocessing unit 3 generate the planted culm. A direction automatic control device for detecting and performing direction control, comprising a direction automatic main switch 17 for switching the direction automatic control device between an operating state and a non-operating state, and the direction sensor 5 (6). When a predetermined time elapses after no longer detecting the grain culm, an automatic control releasing means 18 for stopping the operation of the handling depth automatic control device, and the direction automatic main switch 17 being in a non-operating state,
And a setting canceling means 24 for canceling the setting of the automatic control canceling means 18 so that the automatic control canceling means 18 does not operate. The automatic depth control apparatus is characterized in that the automatic depth control apparatus continues without being released.

(E) Operation Based on the above configuration, when the mowing work is started, the grain culm is mowed and conveyed from the pretreatment unit 3 to the handling depth adjusting and conveying unit (19). Then, when the main sensor 10 senses the grain culm, the handling depth adjusting and conveying section (19) is shallowly or deeply crushed based on the position where the handling depth sensors 7 and 9 sense the tip of the grain culm. Drive to the right side. Then, the grain culm whose handling position is adjusted by the handling depth adjusting and conveying section (19) is threshed by the automatic threshing device.

Further, during the automatic direction control with the automatic direction control main switch 17 turned on, if a predetermined time elapses after the direction sensor 5 (or 6) no longer senses the grain culm due to the end of mowing or the like, the extreme deep handling is prevented. The automatic control of the handling depth adjustment transport section (19) is canceled, but the main switch 17
During the manual cutting operation with the switch off, the preprocessing section 3 is apt to be biased because the cutting section of the preprocessing section 3 is not clearly visible, which causes the direction sensor 5 (or 6) to operate. Even if you can't detect the grain culm,
Since the automatic handling depth control is not cancelled, it is therefore possible to continue the work with the handling depth adjusting and conveying section (19) set to the predetermined handling depth.

(F) Embodiment An embodiment according to the present invention will be described below with reference to the drawings.

An input port of a microcomputer 1 (hereinafter referred to as a microcomputer) mounted on the combine is connected with an automatic pilot lamp 2 for handling depth, and left and right respectively having sensor arms 5a and 6a installed in the pretreatment unit 3. The direction sensors 5 and 6, the tip sensor 7, the stock sensor 9, and the handling depth main sensor 10 are connected to each other. Furthermore, microcomputer 1
Is a deep-handle automatic switch 11, reaping clutch switch 12,
Travel pedal clutch switch 13, FR stepless speed change lever
A lever potentiometer 16 for detecting the tilt angle of 15 and a direction automatic main switch 17 are connected. Also,
The output port of the microcomputer 1 is a shallow drive motor for a deep carrier
19 connected.

On the other hand, in the microcomputer 1, when a predetermined time elapses after the direction sensor 5 (or 6) does not detect the grain culm, the automatic control releasing means 18, which releases the automatic control of the handling depth carrier shallow depth drive motor 19, And a setting canceling means 24 for canceling the setting of the automatic control canceling means 18 when the automatic direction canceling switch 17 is turned off. Therefore, the automatic control canceling means is provided only when the directional automatic main switch 17 is turned on. 18 is configured to operate. In the figure, 20 is an uncut side divider, 21 is a cut side divider, and 28 is an automatic threshing device.

Since the present embodiment is configured as described above, when performing the mowing work with the combine, the handling depth automatic switch 11, the mowing clutch switch 12, the traveling pedal clutch switch
13 is turned on, the direction automatic main switch 17 is turned on, the automatic control releasing means 18 is operated, and the FR stepless speed change lever 15 is operated to the forward side.

The left and right direction sensors 5 and 6 are switched depending on the fact that the left direction sensor 5 is activated during line cutting and the right direction sensor 6 is activated during horizontal cutting, and the cutting condition is changed. For example, when the left direction sensor 5 operates, in FIG.
When the grain culm is in the range L side, the combine arm is rotated to the left by turning the left turn command switch by turning the sensor arm 5a largely, and when the grain culm is in the range R side. Alternatively, when the sensor arm 5a is not touched, the right turn command switch is turned on and the combine turns right. Further, when the grain culm is in the range N, both the command switches are turned off, so that the combine goes straight.

Then, when the grain stalks cut by the preprocessing unit 3 are conveyed and come into contact with the handling depth main sensor 10, the main sensor 10 is turned on, and based on the input signals of the tip sensor 7 and the stock origin sensor 9. The deep-hand drive motor 19
Or, it is driven to the shallow handling side, which allows the grain culm to be an automatic threshing device.
It is transported to 28 and threshed at an appropriate handling depth.

On the other hand, when the combine reaches the end of the rice field and finishes cutting the row of grain culms, the napped grain culms do not come into contact with the sensor arm 5a (or 6a), and in this state the automatic handling depth control is released after a predetermined time has elapsed. However, the control is a direction automatic main switch.
When the direction is automatically controlled when 17 is turned on, automatic control release means 18
Therefore, the automatic control described above is not performed during the manual cutting operation performed by turning off the direction automatic main switch 17 and manually operating the side clutch lever (not shown). Therefore, for example, when cutting manually,
Since the divider 20 on the uncut side of the preprocessing unit 3 is difficult to see from the driver's seat, the divider 20 moves too close to the uncut side, and the sensor arm 5a of the left-direction sensor 5 comes off the grain stem,
Since the automatic handling depth control is not canceled even if the vehicle runs in this state for a predetermined time, it is possible to prevent problems such as the handling depth being too shallow or too deep during manual cutting work. .

The above flow is shown in FIGS. 2 and 3.

(G) Effect of the Invention As described above, according to the present invention, when the direction automatic main switch 17 is in the off (non-operating) state, the automatic control release means 18 does not release the automatic handling depth control device. Since the automatic handling depth control continues, the pre-processing unit 3 tends to be biased and steered when performing the reaping work by a manual operation because the pre-processing unit 3 is difficult to see from the driver's seat. Even if 5 (or 6) is removed from the grain culm, the automatic control of the depth of handling is turned off, resulting in excessive deep handling, or the deep handling causes the automatic threshing device 28 to become clogged. Can be reliably prevented.

[Brief description of drawings]

FIG. 1 is a diagram showing a system configuration according to the present invention, and FIGS. 2 and 3 are flow charts showing the operation according to this embodiment. 3 ... Preprocessing unit, 5, 6 ... Direction sensor (Left direction sensor,
Right direction sensor), 7, 9 ... Handle depth sensor (tip sensor,
Stock sensor), 17 …… direction automatic main switch, 18 ……
Automatic control canceling means, 19 ... Handling depth adjusting and transporting section (deep handling vehicle shallow depth drive motor), 24 ... Setting canceling means.

Claims (1)

[Scope of utility model registration request] 1. An automatic handling depth control device for driving a handling depth adjusting and conveying unit to adjust the handling depth based on a signal from the handling depth sensor, and a direction sensor provided in a pretreatment unit. A direction automatic control device that detects the direction of grain culms and performs direction control, comprising: a direction automatic main switch that switches the direction automatic control device to an operating state and a non-operating state; When a predetermined time elapses after the culm is no longer detected, the automatic control releasing means for stopping the operation of the automatic depth control device and the automatic control releasing means are operated when the direction automatic main switch is in the inoperative state. Setting cancellation means for canceling the setting of the means so as not to do so, and when the direction automatic main switch is in a non-operating state,
An automatic handling depth control device in a combine, characterized in that the automatic handling depth control is continued without being released by the automatic handling depth control device.