JPH08832Y2 - Handling depth automatic control device - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Use The present invention relates to an automatic handling depth control device for a combine, and more specifically, when the pretreatment unit of the combine is operated by a predetermined amount from the current position. The present invention relates to a handling depth automatic control device that cancels the handling depth automatic control for a certain period of time.

(B) Conventional technology Generally, in the automatic handling depth control in combine harvesters and the like, the sensor detects the length of the grain culm scraped and cut by the pretreatment unit, and the automatic control device is operated by the automatic control unit based on the detection signal. A driving device such as a motor provided in the above is operated to swing the handling depth carrier up and down. By swinging the handling depth carrier up and down, the grain culm sent to the carrier is designed to have an appropriate handling depth in the thresher.

(C) Problems to be Solved by the Invention However, in the above-mentioned conventional automatic depth-of-handle control device, when the pretreatment unit is lifted after finishing one-step cutting, the scraping device and the treatment depth of the pretreatment unit are increased. Since the positional relationship with the carrier is approached and a deep handling state is forced, the sensor detects this condition and automatically performs a shallow handling operation to move the handling depth to the shallow handling direction. And move. Therefore, when the pretreatment section is lowered in the next step to start the cutting operation, the cutting operation is started in a shallow handling state.

Therefore, an object of the present invention is to provide an automatic handling depth control device that solves the above-mentioned problems.

(D) Means for Solving the Problems The present invention has been made in view of the above circumstances, and for example, referring to FIG. 1, a pretreatment unit (2) for scraping and cutting a grain culm. And an automatic threshing device (14) for threshing the cut grain culm, and swingably supported to convey the grain culm cut by the pretreatment unit (2) to the automatic threshing device (14) In the combine (1) provided with the handled handling depth carrier (7) and the main sensor (23) for detecting the flow of the grain culm, the handling depth transporter (7) is provided according to the length of the grain culm. ) Automatic control means (15)
a) and the handling depth automatic control means (15a) when the raising operation of the pretreatment section (2) is performed from the current position by a predetermined amount or more.
Turning off the automatic control means (15b), and a time limit means (15b) for keeping the off time of the automatic control means (15a) constant.
c) and are featured.

(E) Action Based on the above configuration, the combine (1) scrapes and cuts the grain culm by the pretreatment unit (2) while traveling in the field. Then, the cut grain culms are sent to the rear, and the flow is detected by the main sensor (23). When the flow of the grain culm is detected by the main sensor (23), the handling depth automatic control means (15a) is activated to swing the handling depth carrier (7) up and down according to the length of the grain culm. To do. By the vertical swing of the handling depth carrier (7), the handling depth of the grain culms to be threshed by the automatic threshing device (14) becomes constant.

Further, when the pretreatment section (2) of the combine (1) is raised from the current position by a predetermined amount or more in a ridge or headland during cutting, the automatic control releasing means (15b) is actuated, and The automatic control of the handling depth by the handling depth automatic control means (15a) is released. The period to be released is set to a fixed time by the time limit means (15c), and the handling depth is returned to the automatic control state after the lapse of the fixed time. However, when the pretreatment unit (2) is raised above the predetermined amount in the headland, there is no cutting of the grain culm, the main sensor (23) is turned off, and the automatic control means (15a) does not operate.

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

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

As shown in FIG. 1, the combine 1 has a pretreatment unit 2, and the pretreatment unit 2 includes the raising body 3, the frame 4,
The cutting blade, the divider 5, the scraping device 6 and the like are integrally configured. The lift cylinder 16 is configured to move up and down integrally as the lift cylinder 16 expands and contracts. Further, the handling depth carrier 7 is arranged in the upper rear part of the scraping device 6, and is rotatable with respect to the pretreatment unit 2 at a fulcrum 10 and swingable up and down. Is performed at the roller receiving portion 8 of the handling depth carrier 7.

That is, the arm 12 is rotated by the motor 12 and the speed reducer 13 mounted on the machine body 1, and this movement is received by the roller receiving portion 8. Because it is configured like this,
When the lift cylinder 16 extends and the pretreatment section rises, the scraping device 6 rises to a position where it hits the handling depth conveyor 7, and thereafter the scraping device 6 rises so as to support the handling depth conveyor 7. Then, the arm 9 and the roller 11 are separated from the roller receiver 8.

In such an operation, when the lift lever 19 shown in FIG. 2 is tilted to the up side, the UP switch 20 is turned on and the automatic control unit is turned on.
The pretreatment lift UP valve 27 operates through 15. Based on this, the lift cylinder 16 shown in FIG. 1 extends and the pretreatment unit 2 rises. On the contrary, the lift lever shown in FIG.
When 19 is tilted to the lower side, the pretreatment lift DOWN valve 29 is activated and the pretreatment section 2 is lowered.

On the other hand, the adjustment of the handling depth of the grain culm is automatically controlled by turning on the automatic handling depth switch 22 shown in FIG. 2 so that the handling depth becomes appropriate. That is, when the main sensor 23 detects the flow of grain culms, the handling depth automatic control means 15a operates based on the signal, and the shallow handling or deep handling operation is in the ready state. When the grain culm does not come into contact with either the stock sensor 25 or the tip sensor 26, the handling depth automatic control means 15a
Rotates the handling depth motor 12 in the deep handling direction. The rotation of the motor 12 is decelerated by the decelerator 13 to rotate the arm 9 counterclockwise in FIG. 1 to perform deep handling operation. When both the sensors 25 and 26 come into contact with the grain culm, conversely, a shallow handling operation is performed. Further, when the grain culm is in contact with only the stock origin sensor 25, neither shallow handling nor deep handling is performed.

Further, the automatic control unit 15 has the above-mentioned automatic handling depth control means.
In addition to 15a, an automatic control releasing means 15b and a timing means 15c having a timer function for keeping the period for releasing the automatic control a fixed time
Etc. are provided.

Since the present embodiment has the above-mentioned configuration, its operation will be described with reference to the flowchart shown in FIG.

When the handle depth automatic switch 22 is turned on, the handle depth is automatically controlled. In this state, when the main sensor 23 is off, that is, when there is no grain flow, the handling depth motor 12 does not operate. When the grain culm begins to flow and the main sensor 23 changes from off to on (S1), the automatic flag is set and the automatic lamp 30 is turned on. Then, based on the ON / OFF signals of the stock sensor 25 and the tip sensor 26 depending on the length of the grain culm, the handling depth automatic control means 15a operates the handling depth motor 12 to perform shallow handling or deep handling operation as necessary. To do.

Further, when the main sensor 23 is in the ON state and the automatic flag is set (S2), but the pretreatment unit 2 is not operated to lift (lift UP) (S4), the handling depth is the same as above. Will be automatically controlled. If the automatic flag is reset (θ) in S2, the time limit means 15
It is determined whether the release timer T15c, which is c, is counting time (S
3). During the timekeeping, the automatic control means 15a does not operate, and the handling depth motor 12 does not rotate in either direction of shallow handling and deep handling. If the time measurement has been completed, the automatic flag is newly set, and it is determined whether or not the raising operation of the preprocessing unit 2 has been performed as described above (S4).

Here, the raising operation of the pretreatment unit 2 is performed (S
4) And when it is the time when the operation is started (S5), the automatic control releasing means 15b stores the ground surface height h ₁ of the preprocessing unit 2.
Then, the same means 15b compares the current ground surface height h of the pre-processing unit 2 with the stored value h _1, and if h−h ₁ <a (S
6), the handling depth is automatically controlled as it is. If _{h-h 1> a (S6} ), auto flag is reset by the automatic control releasing means 15b with timing of the release timer T is started, the automatic lamp is turned off, a fixed time, namely timed means
Both the shallow depth operation of the handling depth motor 12 stops for the time set in 15c. The a is a numerical value provided to identify the position of the pretreatment unit 2 in the headland and the position during normal mowing.

(G) Advantageous Effect of the Invention As described above, according to the present invention, when the combiner (1) having the automatic handling depth control device has the pretreatment section (2) raised from the current position by a predetermined amount, the handling depth is increased. Since the automatic control canceling means (15b) for canceling the automatic control of the height is provided, when the pretreatment part (2) is raised from the current position by a predetermined amount in the headland of the field, etc., the control means (15a) is treated shallowly. Since the attempt to perform the gripping operation is released, even if the pretreatment section (2) is lowered in the next row cutting, the cutting is not started in the shallow handling state.

In addition, since the time limiter (15c) for setting the time for releasing the automatic handling depth control to a fixed time is provided, it is possible to cut the grain culm planted on the convex land of the field, such as a ridge, after a fixed time. Since the automatic control is resumed, there is no possibility that the pretreatment section (2) is lifted to enter the deep handling state. In addition, it is possible to prevent erroneous release of the handling depth during cutting in a minimum time. When the pretreatment section (2) is raised in the headland, the main sensor (23) is turned off and the automatic control is released, so that no trouble occurs.

[Brief description of drawings]

FIG. 1 is a side view of the combine, FIG. 2 is a system diagram of an automatic control device, and FIG. 3 is a flowchart of automatic handling depth control. DESCRIPTION OF SYMBOLS 1 ... Combine, 2 ... Pretreatment part, 7 ... Handling depth conveyance body, 14
... automatic threshing device, 15a ... automatic handling depth control means, 15b ... automatic control release means, 15c ... time limit means, 23 ... main sensor.

Claims (1)

[Scope of utility model registration request] 1. A pretreatment unit for scraping and cutting a grain culm and an automatic threshing device for threshing a trimmed grain culm, wherein the grain culm cut by the pretreatment unit is applied to the automatic threshing device. In a combine equipped with a swingingly supported handling depth carrier for transport and a main sensor for detecting the flow of grain culms, the handling depth carrier is shallowly handled according to the length of the grain culm. Alternatively, a handling depth automatic control means for automatically controlling to the deep handling, and an automatic control releasing means for turning off the handling depth automatic control means when the raising operation of the pretreatment unit is performed by a predetermined amount or more from the current position, A handling depth automatic control device comprising: a time limiter for setting the off time of the automatic control means to a constant time.