JP2537397Y2 - Automatic control device for handling depth in combine - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to an automatic depth control device in a combine, and more particularly, to a control device that operates when checking the operation of the automatic depth control device. Things.

(B) Conventional technology Generally, automatic handling depth control in a combine or the like is performed by an automatic control device based on the detection signal, wherein a handling depth sensor detects the length of the grain stalks that have been plucked and cut by the preprocessing unit. Is configured to operate a drive device such as a depth motor provided on the machine body side to swing the depth transfer body of the depth adjustment device up and down. When the handling depth carrier swings up and down, the grain culm sent to the handling depth carrier is designed to have an appropriate handling depth in the automatic threshing apparatus.

In addition, when the handling depth reaches the upper limit or the lower limit, a handling device that mechanically contacts the limit switch to turn off the power of the handling motor, or drives the handling motor for a certain period of time. There is one that stops automatically (auto stop method).

(C) Problems to be Solved by the Invention By the way, as described above, in the method of automatically stopping the handling depth motor, the auto stop often operates during maintenance of the automatic handling depth control device, and the handling depth motor stops driving. Therefore, there has been an inconvenience that it cannot be determined whether the failure is normal.

Therefore, the present invention provides an automatic handling depth control device for a combine which solves the above-mentioned problem by extending the driving time of the auto stop of the handling depth motor or canceling the auto stop at the time of maintenance and inspection. The purpose is to do so.

(D) Means for Solving the Problems The present invention has been made in view of the above circumstances. For example, referring to FIG. 1, FIG. 2 and FIG. It has a pre-processing unit (5) for cutting and an automatic threshing device (21) for threshing the harvested stalks, and further drives a handling depth motor (15) to reduce the handling depth of the harvested stalks. In a combine (1) provided with an automatic control device for a working depth comprising a working depth adjusting device (20) and a working depth sensor (30, 31, 32) to be adjusted, the working depth adjusting device (20) is provided with a stopper. A depth motor automatic stop means (39) for automatically stopping the depth motor (15) when the rotation signal of the depth motor (15) further continues in the contact direction in a state of contact with the motor; Operation check command means (26) for issuing a command to check the operation of the handling depth adjusting device (20); On the basis of the command of the step (26), the drive time until the stop of the depth motor (15) set by the means for automatically stopping the depth motor (39) is extended or the depth motor is stopped. Control means (40) for canceling the operation of the automatic stop means (39).

(E) Function Based on the above-described configuration, the combine (1) scrapes and cuts the cereal stalk by the pre-processing unit (5) while traveling in the field. Then, the cut culm is sent backward, and the length of the culm is detected by the handling depth sensors (30, 31, 32). According to the length of the grain culm detected by the handling depth sensor (30, 31, 32), the handling depth base (15) is driven to control the grain culm depth based on the handling depth adjusting device (20). By adjusting the depth, the handling depth of the grain stalks threshed by the automatic threshing device (21) becomes constant.

Also, at this time, when the depth motor (15) is driven for a certain period of time, and the rotation signal of the depth motor (15) is kept in a state in which the depth adjusting device (20) is in contact with the stopper even during the driving time. Is continued, the handling depth motor (15) is automatically stopped by the handling depth motor automatic stop means (39).

On the other hand, when checking the operation of the handling depth adjusting device (20), when the operator activates the operation check command means (26), the control means (40) automatically stops the handling depth base (15). Or the operation of the depth-of-depth motor automatic stop means (39) is released.

(F) Effect of the invention As described above, according to the invention, when the operator operates the operation check command means (26) at the time of checking the operation of the handling depth adjusting device (20), the handling depth motor ( 15)
Since the driving time until the automatic stop of the vehicle is extended or the automatic stop is released, the handling depth adjusting device (20) can be operated without any trouble without stopping halfway, and the handling depth can be adjusted. It is possible to accurately determine whether the device (20) is normal or faulty.

Further, the operator sets the operation check command means (26) to OF.
At the time of automatic control of the working depth to F, the working depth motor (15) is automatically stopped in a short driving time, so that the working depth motor (15) does not generate heat and burns out.
Can be safely driven.

The reference numerals in parentheses refer to the drawings, and do not limit the configuration.

(G) Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 3, the combine 1 has a body frame 3 that is supported by a pair of right and left crawler traveling devices 2, 2 so as to be able to move up and down. Are supported so as to be able to move up and down freely. The pre-processing section 5 includes a divider 6, a raising body 7, a scraping device 9, a pre-processing section frame 10, and the like, and is integrally formed. The pre-processing unit frame 10 includes a lower frame 10a and an upper frame 10b. One end of a lift cylinder 11 is rotatably supported on the upper frame 10b, and the other end of the lift cylinder 11 is Is rotatably supported. And
The pre-processing unit 5 is configured to move up and down integrally with the expansion and contraction of the lift cylinder 11.

Further, a handling depth transport body 12 is provided on the upper rear side of the scraping device 9.
Are disposed, and the handling depth carrier 12 is provided with a frame 10b.
It is rotatable with respect to the pre-processing unit 5 at a fulcrum 13 provided at the upper end of the pre-processing unit 5 and is swingable up and down, and the adjustment is performed by a roller receiving unit 12a of the handling depth conveying body 12. .

A handling depth motor 15 is arranged above the body frame 3, and a speed reducer 16 is connected to the handling depth motor 15. One end of an arm 17 is connected to the speed reducer 16, and a roller 19 is pivotally supported at the other end of the arm 17, and the roller 19 handles the roller receiving portion 12 of the conveying member 12. Abuts the depth. Further, a handling depth adjusting device 20 is constituted by the handling depth motor 15, the handling depth transport body 12, and the like. Further, an automatic threshing device 21 is provided above the body frame 3. The arm 17 is rotated by the handling depth motor 15 and the speed reducer 16, and this movement is transmitted to the roller receiving portion 12a by the roller 19, so that the handling depth transport body 12 rotates left and right and swings up and down. Has been adjusted.

In addition, the automatic threshing device 21 includes, as shown in FIG.
A handling cylinder 22 is provided, and a feed chain 23 is disposed obliquely on the side surface of the handling cylinder 22 with an upward slope.

As shown in FIG. 2, the control device 25 has an operation check switch 26, an automatic handling depth main switch 27, a reaping clutch switch 29, a main sensor 30, a stock sensor 31, A sensor 32, a manual shallow handle switch 33 for manually operating the handle motor 15, a manual deep handle switch 35, and an engine rotation detection sensor 36 are connected. Further, an automatic pilot lamp 37 and a handling depth motor 15 are connected to an output port of the control device 25.

In addition, when the handling depth automatic main switch 27 is ON,
The automatic pilot lamp 37 is turned on. Furthermore, the control device
The output from the 25 handling depth motor automatic stop means 39 automatically stops the handling depth motor 15.

Then, the operation check switch 26 and the main sensor 3
0, Stock sensor 31, Head sensor 32, Manual shallow switch 3
3, manual deep handling switch 35, engine rotation detection sensor 36
Is input to and controlled by the control means 40 of the control device 25, and the output from the control means 40 drives the handling depth motor 15. The control means 40 and the handling depth motor automatic stop means 39 are connected on a circuit.

Next, the operation of the present embodiment will be described based on the flowchart of FIG.

First, it is determined whether or not the operation check switch 26 is ON (S1). If the operation check switch 26 is OFF, the timer mode is set to (1) (S2), and the handling depth is controlled ( S3), return to (S4) and return to step S1.

If the operation check switch 26 is ON in step S1, the timer mode is set to (2) (S5), and the processing shifts to step S3 to perform the depth control, and shifts to return (S4). And return to step S1.

Also, when the operation check switch 26 is OFF and the handling depth automatic main switch 27 is ON, the timer mode is set to (1), and the handling depth motor 15 is automatically stopped by the handling depth motor automatic stop means 39. The drive time to reach is set short, and normal handling depth control is performed. Main sensor 30 is OF
F, that is, when there is no grain stem flow, the handling depth motor 15 does not operate. When the cereal stem starts flowing and the main sensor 30 changes from OFF to ON, the depth control starts, and the control device 25 operates based on the ON / OFF signal of the stock sensor 31 and the tip sensor 32 according to the length of the cereal stem. The depth motor 15 is operated as shallow or deep as required. Further, when the rotation signal of the handling depth motor 15 continues with the handling depth transport body 12 abutting on the stopper, the handling depth motor 15 is automatically stopped by the handling depth motor automatic stop means 39.

Then, when the stock sensor 31 is OFF, the handling depth motor 15 is operated in the deep handling mode, the rotation of the handling depth motor 15 is transmitted to the speed reducer 16, the arm 17 is rotated, and the roller 17 is rotated. It is transmitted to the roller receiving portion 12a via 19, and moves the handling depth transport body 12 in the handling direction.

On the other hand, when the stock sensor 31 is ON and the tip sensor 32 is also ON, the handling depth motor 15 is operated to perform the shallow handling, and moves the handling depth transport body 12 in the shallow handling direction. Also, the stock sensor 31
When the tip sensor 32 is OFF with ON, the operation of the handling depth motor 15 is stopped, and the handling depth conveyance body 12 does not operate.

When the operation check switch 26 is ON, the timer mode is set to (2), and the control means 40 sets the drive time until the motor 15 automatically stops, or sets the handle depth to The operation of the motor automatic stop means 39 is released, and the handling depth is controlled.

Further, even if the operator does not operate the operation check switch 26, the operation check is turned off at the time of engine rotation by the engine rotation detection sensor 36, and the handling depth motor 15 is automatically stopped by the handling depth motor automatic stop means 39. The operation check is turned ON when the engine is stopped, and the driving time until the depth motor 15 automatically stops is set, or the operation of the depth motor automatic stop means 39 is set. Is released.

Also, when the operator turns on the operation check switch 26 at the time of checking the operation of the handling depth adjusting device 20, the drive time to the automatic stop of the handling depth motor 15 is extended or the automatic stop is released. Therefore, the handling depth adjustment device 20 can be operated without any trouble without being stopped halfway, and the normality or failure of the handling depth adjustment device 20 can be accurately determined.

Also, the operator turns off the operation check switch 26.
During normal handling depth control, the handling depth motor 15 is automatically stopped in a short drive time, so that the handling depth motor 15 does not generate heat and burn out, ensuring the safety of the handling depth motor 15 be able to.

Further, in the case of the operation check switch 26, the operator may forget to operate, but when the engine is stopped, the operation is automatically switched to the operation check mode by the engine rotation detection sensor 36. It cannot happen.

Although the operation check switch 26 is used in the above-described embodiment, the input check switch can also serve as the operation check switch 26.

Further, in the above-described embodiment, the engine rotation detection sensor 36 is used. However, instead of this, a sensor that can distinguish between work and non-work can be used.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a handling depth automatic control device to which the present invention is applied, FIG. 2 is a system block diagram according to the present invention, and FIG.
FIG. 4 is a side view of a combine to which the present invention is applied, and FIG. 4 is a flowchart according to the present invention. 1: Combine, 5: Pre-processing unit, 15: Depth motor, 20
... Depth adjustment device, 21 ... Automatic threshing device, 26 ... Operation check command means (operation check switch), 30 ... Depth sensor (main sensor), 31 ... Depth sensor (stock sensor), 32 ... Handle depth sensor (head sensor), 39 ... Handle depth motor automatic stop means, 40 ... Control means.

Claims (1)

(57) [Scope of request for utility model registration] The present invention has a pretreatment section for scraping and cutting a grain stalk and an automatic threshing device for threshing the harvested grain stalk, and further, a handling depth motor is driven to handle the harvested grain stalk. A combine depth control device comprising a control device for adjusting the working depth and a control device for controlling the working depth comprising a sensor for controlling the working depth. A depth motor automatic stop means for automatically stopping the depth motor when the rotation signal of the depth motor continues; an operation check command means for issuing a command to check the operation of the depth control apparatus; Based on the command from the check command means, extend the drive time to the automatic stop of the handling motor set by the handling motor automatic stop means or cancel the operation of the handling motor. Control means, and An automatic control device for handling depth in a combine.