JPH0755874Y2 - Handle depth control device in combine - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention relates to an automatic operation for adjusting the handling depth by detecting the culm length of a transport grain culm by a handling depth sensor, and a manual operation for adjusting the handling depth by operating a manual switch. The present invention relates to a handling depth control device in a combine in which the handling depth can be adjusted by both operating means.

Conventional technology Conventionally, the handling depth sensor detects the culm length of the transported grain culm, and the grain handling system provided between the pretreatment section and the threshing section is rotationally displaced by driving the handling depth adjusting motor to control the handling depth. Control of the combine harvester with automatic operation to adjust the handle depth and manual operation to adjust the handle depth of the grain culvert carrier by operating the handle switch to drive the handle depth adjustment motor. Means are described in JP-A-61-15201.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention By the way, in the conventional combine handling depth control means described in the above publication, a limit switch for controlling the vertical rotation range of the shallow handling side and the deep handling side of the grain culm carrier is provided. Although this type of limit switch is generally provided, it is generally expensive, and since repeated detection is likely to cause contact failure and damage to the contacts, the range of rotation of the grain culvert carrier is properly regulated over a long period of time. The reality is that you cannot do it.

If the contact of the limit switch falls into a malfunction, the energization state of the handling depth adjusting motor cannot be released even after the grain-culvert carrier comes into contact with the stopper, so a locking load is applied to the handling depth adjusting motor. Not only is there a risk that the handling depth adjustment motor will be burned out due to the continuation of the load, but there is also the inconvenience that control power is wasted due to the continuation of energization after locking.

In view of the above-mentioned problems in the conventional device, the present invention provides a timer for controlling the drive time of the handling depth adjusting motor, and sets the operating time of the timer appropriately during automatic operation or manual operation. This makes it possible to shorten the lock state time of the handling depth adjusting motor on the shallow handling side or the deep handling side of the grain culm transporter without providing an expensive limit switch for regulating the rotation range of the grain culm transporter, and the locked state It is an object of the present invention to provide a handling depth control device in a combine, which can reduce the burning of the handling depth adjustment motor due to the use of an inexpensive motor and reduce the waste of control power due to the continuation of energization after locking. It is what

Means for Solving the Problems In order to achieve the object, the present invention detects a culm length of a conveyed grain culm by a handling depth sensor, and based on the detection result, a grain disposed between a pretreatment unit and a threshing unit. Adjusting the handling depth of the culm carrier by rotating the culm carrier by inching drive of the handling depth adjustment motor and adjusting the handling depth by operating the manual switch to continuously drive the handling depth adjustment motor. In a combine in which the handling depth can be adjusted by both manual operating means, a timer for controlling the drive time of the handling depth adjusting motor is provided, and the input signal at the time of the automatic operation or the manual operation is a predetermined time or more in the same direction. The gist is that the drive of the depth adjustment motor is stopped when continued, and the setting time of the timer is set shorter than the setting time of automatic operation.

Operation According to the handle depth control device in the combine according to the present invention, a timer for controlling the drive time of the handle depth adjustment motor is provided, and the operation time of this timer is automatically operated by the inching drive of the handle depth adjustment motor. Alternatively, if the input signal of the manual operation in which the depth-adjustment motor is continuously driven continues in the same direction for a predetermined time or longer, the drive of the depth-adjustment motor is stopped, and Since the timer setting time for manual operation is set to be short, the lock load time of the handling depth adjustment motor can be shortened.

Embodiment An embodiment of the handling depth control device of the present invention will be described with reference to the drawings.

In FIG. 1, 1 is a combine, 2 is its pre-processing unit,
3 is a threshing unit, and the grain culm K cut by the pretreatment unit 2 is configured to be conveyed to the threshing unit 3 via the grain culm conveying unit 4.

In the grain culm transport unit 4, 5 is a grain culm transporter,
The grain culm carrier 5 is rotatably supported so as to be able to change the grain stalk sandwiching position to be continuously fed to the feed chain 6 of the threshing unit 3, and is controlled by a forward / reverse handling depth adjusting motor 7. The grain culm carrier 5 is configured to be rotationally displaced and adjusted. Then, by gradually adjusting the rotation of the grain culm carrier 5 by the handling depth adjusting motor 7, the grain culm carrier 5 is gradually culled.
The feed chain 6 is moved by rotating and shifting in the direction of the stem.
The grain culm holding position of the culm is changed and the handling depth is kept constant, and the grain is transported by the handling depth sensors 8 (on the tip side) and 9 (on the stock side) provided near the end of the grain transport direction. The culm length of the grain culm K is sensed, and the sensing result is controlled by the control unit C (microcomputer) provided in the body of the combine 1. In the figure, S ₁ is a switch lever for manual operation of the deep handling, and S ₂ is a switch lever for switching between the deep manual and automatic handling.

FIG. 2 shows the configuration of the handling depth control device of the control section C.

That is, on the input side of the control unit C, the handling depth sensors 8 and 9 are provided.
Switches,扱深Manual扱深manual switch lever S ₁扱深manual adjustment switch 10, 11 to be operated,扱深automatic + main operating been engineered扱深manual-automatic changeover switch lever S ₂ The contacts of the switch 12 and the like are connected so as to be input to the main body of the control unit C. Then, when manually operating the handling depth, switch 10 is used to move the grain culvert carrier 5 in the shallow handling direction, and switch 11 is used to rotate the grain culvert carrier 5 in the deep handling direction. Good.

Further, the handling depth adjusting motor 7 or the like is connected to the output side of the control unit C, and the handling depth adjusting motor 7 is inching (intermittently) in the shallow handling or the deep handling direction during the handling depth automatic operation. It is controlled so as to be driven, and during manual operation of the deep handling, it is controlled so as to be continuously driven in the shallow handling direction or the deep handling direction, respectively.

Further, the main body of the control unit C is provided with timers 13a and 13b for controlling the drive time of the depth-of-handle adjusting motor 7, and the timer 13a has a predetermined time when the input signal of the depth-of-handle automatic operation is preset in the same direction. When the above continues, the driving of the handling depth adjusting motor 7 is stopped, and when the input signal of the handling depth manual operation continues in the same direction for a predetermined time or more, the timer 13b is energized to stop the driving of the handling depth adjusting motor 7. In addition, in the case of inching control and continuous control, the set time of the timers 13a and 13b is set shorter than the set time of automatic operation (for example, 5 seconds) and the set time of manual operation (for example, 2.5 seconds). The moving distances of the grain culm carriers 5 are equalized.

In the structure configured as described above, the energization time to the handling depth adjusting motor 7 during the automatic operation and the manual operation becomes equal, and the limit switch for restricting the rotation range of the grain culm carrier 5 is provided. Without stopping, the driving of the handling depth adjusting motor 7 is stopped and the timers 13a, 13b are operated even if the grain culvert carrier 5 comes into contact with the stopper (not shown) during both automatic and manual operations.
Since the drive of the handling depth adjusting motor 7 can be controlled by this, the lock load of the handling depth adjusting motor 7 can be reduced. Note that FIG. 3 is a main flowchart of the handling depth control device of the present invention, and FIG. 4 is a shallow handling control (grain culm carrier 5).
FIG. 5 shows a flow chart of the case of rotating and shifting to the shallow handling side, and FIG. 5 shows a flow chart of deep handling control (when the grain and culm carrier 5 is rotated and shifted to the deep handling side). In the words and phrases in the figure, the flag is FG, the switch is SW, and the return is RE.
I omitted T respectively.

By the way, as shown in FIG. 2 and FIGS. 6 to 7, the control section C is provided with a function of checking each output with respect to the input of the circuit itself of the control section C. That is, the input check switch 14 is provided on the input side of the control unit C, and when the switch 14 is turned on, the control unit C is turned on.
A timer 15 for setting a fixed time (several seconds) for checking each output of itself is incorporated in the control unit C. Further, it may be configured to load a function of issuing an alarm when an abnormality is detected in each output at the time of checking each output of the control unit C itself.

Effect of the Invention As described above, the present invention detects the culm length of the transported grain culm by the handling depth sensor, and adjusts the handling depth of the grain culm carrier arranged between the pretreatment section and the threshing section based on the detection result. Automatic operation to adjust the handling depth by rotating displacement by inching drive of the motor,
Drive time of the handling depth adjusting motor in a combine in which the handling depth can be adjusted by both manual operating means for adjusting the handling depth of the grain culm carrier by operating the manual switch to continuously drive the handling depth adjusting motor. With a timer to control
When the input signal during the automatic operation or the manual operation continues in the same direction for a predetermined time or more, the driving of the handling depth adjusting motor is stopped, and the set time of the timer is set to the manual operation more than the set time of the automatic operation. By setting the setting time short, it is not necessary to provide an expensive limit switch, the lock state of the handling depth adjustment motor on the shallow handling side or the deep handling side of the rotation range limit of the grain feeder is short, and continuous. In combination with the fact that the lock load applied to the handling depth adjustment motor during driving and inching drive can be reduced by the same amount and at the same time, it is possible to prevent the handling depth adjustment motor from burning due to the lock load and an inexpensive motor. Can be used, and the waste of control power can be reduced.

[Brief description of drawings]

FIG. 1 shows an embodiment of a handling depth control device according to the present invention. FIG. 1 is a plan view showing a schematic structure of a combine, FIG. 2 is a block diagram of the handling depth control device of the present invention, and FIG. 3 is the same. FIG. 4 is a main flowchart, FIG. 4 is a flowchart for shallow handling control, FIG. 5 is a flowchart for deep handling control, FIG. 6 is a block diagram showing the input check function of the control unit, and FIG. DESCRIPTION OF SYMBOLS 1 ... Combine, 2 ... Pretreatment part, 3 ... Threshing part, 4 ... Grain carrier, 7 ... Handling depth adjusting motor, 8, 9 ... Handling depth sensor, 13a, 1
3b ... timer, S ₁ ... manual switch, K ... culms.

Claims (1)

[Scope of utility model registration request] 1. A culm length of a conveyed grain culm is sensed by a handling depth sensor, and based on the sensing result, a grain culm carrier disposed between a pretreatment section and a threshing section is rotated by an inching drive of a handling depth adjusting motor. The handling depth can be adjusted by both automatic operation to adjust the handling depth by dynamic displacement, and manual operation to adjust the handling depth of the grain culm carrier by operating the manual switch to continuously drive the handling depth adjusting motor. In the combine, the timer for controlling the driving time of the handling depth adjusting motor is provided, and the driving of the handling depth adjusting motor is stopped when the input signal during the automatic operation or the manual operation continues in the same direction for a predetermined time or more. A handling depth control device in a combine, characterized in that the setting time of the timer is set shorter than the setting time of automatic operation.