JP2795773B2 - Binding position control device for combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine for traveling on farmland to cut crops, and more particularly to a combine provided with a binding device for binding a culm from which a grain has been separated.

[0002]

2. Description of the Related Art A combine introduces a harvested crop to a threshing device, and detaches grains from a culm. The grain culm after detaching the grain is discharged from the rear of the threshing device. The grain stalks discharged from the threshing device are often bound for later work, but in consideration of facilitation of such a bundling operation, there is a combine provided with a binding device behind the threshing device. This binding device accumulates and bundles a certain amount of cereal stems transported from the threshing device via the transport device, and binds them with a binding string. FIG. 6 shows a configuration of a portion including a conventional combine tying device. As shown in the figure, a pinching transport device 2 for pinching a grain culm between a chain 2a and a rail 2b is provided between a threshing device 1 and a binding device 4, and a crop that has passed through the threshing device 1 is provided. Is held by the holding and conveying device 2 and guided to the binding device 4. The tying device 4 includes a plate-shaped stock alignment member 5 that abuts against the stem of the grain stem.
The stem of the cereal stem is brought into contact with the stock arranging member 5, whereby the position of the cereal stem in the longitudinal direction is defined based on the end on the side of the stem. The stock alignment member 5 is screwed to a rotary screw 9 as shown in FIG. 4B, and the stock alignment member 5 is rotated in the longitudinal direction of the grain stem by rotating the rotary screw 9 by driving a motor 10. Moving. By moving the grain culm in the longitudinal direction of the grain arranging member 5, the relative distance between the stem of the grain culm and the needle supplying the tying string changes, and the grain culm is bound at a preset position. Can be.

In general, in a combine, the nipping position of a culm in a transfer device provided between a threshing device and a binding device changes due to a change in a cutting height in a cutting section and a handling depth in a threshing device. If the change of the pinching position in the transfer device is left, the transfer position of the grain stalk with respect to the binding device changes, and the root of the grain stalk does not accurately contact the stock alignment member of the binding device. The position in the direction cannot be defined. For this reason, in a combine equipped with a conventional binding device, the stock alignment member of the binding device includes a sensor that detects the root of the grain stalk,
The stock arrangement member is moved in the longitudinal direction of the grain stem based on the detection result of this sensor.

[0004]

However, in the conventional combine, the transport position of the grain culm is detected by the stock alignment member, and the stock alignment member is moved based on the detection result. It could not be corrected beforehand to the proper position in front of the stock alignment member.

For this reason, when the length of the cereal stem changes rapidly, the length from the root of the cereal stem to the binding position cannot be maintained accurately and accurately, and the length desired by the operator cannot be maintained. In addition, there was a problem that it became impossible to bind grain culms.

SUMMARY OF THE INVENTION It is an object of the present invention to transfer a grain culm to a binding device by changing a pinching end position of the grain culm in a pinching / conveying device in a moving direction and a moving speed according to a conveying state of the grain culm to a stock aligning member. Keep the position constant,
Prevents the stock arranging member from frequently moving due to the change of the holding position of the cereal culm in the transport device, so that the distance between the binding position and the stock arranging member can be fixed so that the operator always keeps the grain culm at the desired position An object of the present invention is to provide a binding position control device for a combine that can be bound.

[0007]

SUMMARY OF THE INVENTION A combine tying position control device according to the present invention comprises a tying member having a stock alignment member which is movable in the longitudinal direction of a grain stalk and abuts against the end of the grain stalk to define a binding position. In a combine equipped with a device and a pinching and conveying means in which the pinching position of the cereal stalk changes in the longitudinal direction of the cereal culm with movement in the conveying direction with respect to the binding device, the length from the stock end of the cereal culm to the binding position. Input means for setting and inputting, a stock end detecting means for detecting a transfer position of the stock end with respect to the stock alignment member, and a stock alignment for moving the stock alignment member in the longitudinal direction of the grain stem based on the detection result of the stock end detection means. Position control means, a stock alignment position detecting means for detecting the position of the stock alignment member, a pinch end position moving means for moving the pinch end position of the grain culm in the pinch transport device, and from the stock end set and input by the input means To the binding position Characterized in that a, a movement control means for setting a moving direction and a moving speed of the clamping end positions by pinching position moving means based on a detection result of the length and Kabusoroe position detecting means.

[0008]

According to the present invention, the transfer position of the stock end with respect to the stock alignment member of the binding device is detected by the stock end detecting means. The stock arrangement member is moved in the longitudinal direction of the grain stem based on the detection result of the stock end detecting means. Therefore, the stock alignment member is moved in the longitudinal direction of the grain stem following the stock end of the grain stem transported to the binding device. Further, the position of the stock alignment member is detected by the stock alignment position detecting means, and the holding and conveying means is based on the detection result of the stock alignment position detecting means and the length from the stock end to the binding position set and input by the input means. The moving direction and the moving speed of the pinching end position in are determined. The nipping and conveying means is installed in an oblique direction so that the nipping position of the cereal stem changes in the longitudinal direction of the cereal culm with movement in the conveying direction with respect to the tying device. The transport position of the culm changes in the longitudinal direction of the grain culm.

On the other hand, the proper position of the stock alignment member is uniquely determined by the length from the stock end set by the input means to the binding position, and the length set and input and the detection of the stock alignment position detection means. By comparing the result with the result, the error of the current position with respect to the proper position of the stock alignment member is recognized, and the nipping end position in the nipping and conveying device is moved by the moving direction and the moving speed according to the error. Therefore, the transport position of the grain stem is quickly changed according to the error state.

[0010]

FIG. 1 is a schematic plan view showing a structure near a binding device of a combine to which a binding position control device according to an embodiment of the present invention is applied. The binding device 11 mounted on the rear end of the combine is provided with a stock alignment plate 13 and a stock alignment member 12 including stock end sensors S1 and S2.
The stock arranging member 12 is screwed with the rotary screw 14. When the rotary screw 14 is rotated by driving the motor M1, the stock arranging member 12 moves in the directions of the arrows C and D according to the rotation direction. Due to this movement, the distance L1 between the stock alignment plate 13 and the needle 19 for feeding out the binding cord changes. The current position of the stock arranging member 12 is detected by the volume sensor VR1.

The holding and conveying device 15 for conveying the cereals from a threshing device (not shown) to the binding device 11 has a conveying chain 16 and a rail 17. Sandwich. A rack gear (not shown) that meshes with the pinion gear 18 is formed on a part of the rail 17. When the pinion gear 18 is rotated by driving the rail motor M <b> 2, the rail 17 moves in the direction of the arrow A or B according to the rotation direction. Expand and contract in the direction. That is,
The end of the rail 17 on the binding device 11 side is displaced from a position detected by the shortened side rail sensor S4 to a position detected by the extended side rail sensor S5. Due to the displacement of the rail 17, the clamping end position of the root of the culm to be clamped changes within the range L2. Therefore, when the rail 17 is moved in the direction of arrow A or B via the pinion gear 18 by controlling the rotation of the rail motor M2, the conveying position of the grain stalk with respect to the binding device 11 changes within the range L2. The end (stock end) of the cereal stem conveyed by the conveying device 15 on the stock root side is detected by the stock end sensors S1 and S2.

FIG. 2 is a diagram showing a configuration of a control unit of a binding position control device including the binding device. The CPU 21 constituting the control section includes a ROM 22 and a RAM 23, and further includes sensors S1 to S1 through an interface circuit.
5, A / D converter 24 and motor drivers 25 and 26
Is connected. On / off signals are input from the stock end sensors S1 and S2 in accordance with the presence or absence of a stock end of the cereal stem. From the activation sensor S3, an on / off signal corresponding to the presence or absence of a grain culm in the transport device 15 is input. Rail sensor S4
The detection state of the rail 17 is input from S5.

From the A / D converter 24, data detected by a volume sensor VR1 for detecting the position of the stock arranging device 12 is input. The CPU 21 outputs control data to the motor drivers 25 and 26 based on the input data from the sensors S1 to S5 and the volume sensor VR1 according to a program written in the ROM 22 in advance.
Data input and output during this time is temporarily stored in a predetermined memory area of the RAM 23. Motor driver 2
The stocking motor M1 and the rail motor M2 are connected to the motors 5 and 26, respectively.
1 and the drive data of the rail motor M2.

FIG. 3 is a flowchart showing a part of the processing procedure of the control unit of the binding position control device. In the automatic control of the binding position, the CPU 21 constituting the binding position control device first checks the on / off state of the stock end sensors S1 and S2 (n1, n2). Stock end sensor S on the tip side
If No. 1 does not detect the end of the grain stem and is in the off state, after checking whether the stock alignment member 12 is at the limit position in the direction of the arrowhead in the direction of arrow C, the stock alignment motor is checked. M1 is driven to move the stock arranging member 12 toward the tip (in the direction of arrow C) (n5, n6). Stock end sensor S on the tip side
1 is on and the stock end sensor S2 on the stock side is on, the stock alignment member 12 is moved to the stock side (in the direction of arrow D).
After determining whether or not the limit position has been reached, the stock arranging member 12 is moved to the stock source side (the direction of arrow D) (n3,
n4). When the stock end sensor S1 on the tip side is on and the stock end sensor S2 on the stock side is off, the stock alignment member 12 is not moved. By the above processing of n1 to n6,
The stock alignment member 12 is moved in the arrow C or D direction so that the stock end of the cereal stem is located between the stock end sensor S1 on the tip side and the stock end sensor S2 on the stock origin side. The processing of n1 to n6 corresponds to the stock position control means of the present invention.

The position of the stock alignment member 12 moved by the stock alignment position control means is detected by a volume sensor VR1. The CPU 21 uses this volume sensor V
The position of the stock alignment member 12 is read from the output data of R1, and then the data of the binding position (L1 shown in FIG. 1) set and input by the setting volume VR2 is read (n7, n8). The drive data of the rail motor M2 is read from the table stored in the ROM 22 based on the stock alignment position data and the binding position data (n
9). As shown in FIG. 4, the ROM 22 stores the drive direction and drive time of the rail motor M2 using the output data of the volume sensor VR1 and the binding position as parameters. The CPU 21 creates drive data for the rail motor M2 based on the drive direction and drive time read from this table, and outputs it to the motor driver 26 (n
10). The processing of n7 to n10 corresponds to the movement control means of the present invention, and the processing of n1 to n10 is continuously performed during the automatic control of the binding position (n11).

According to this embodiment, the stock arranging member 12 is moved to the bundling device 11 so that the stock end of the culm is located between the two stock end sensors S2 and S2.
The rail 17 is moved in the moving direction and the moving speed set based on the error between the stock alignment member 12 and the set and inputted binding position at this time. As shown in FIG.
The position of the stock alignment member 12 corresponding to the set and input binding position is uniquely determined, and as the error between the proper position of the stock alignment member 12 and the current position increases, the drive duty ratio of the rail motor M2 increases. Rail 17
Can be moved quickly. Further, as the error becomes smaller, the drive duty ratio of the rail motor M2 is made smaller, and the moving speed of the rail 17 is made slower to make the rail 1
Hunting of the position control 7 can be prevented. In this way, the stock arranging member 12 is moved while following the current grain culm transport position, and the position of the stock arranging member 12 is detected, and the detection result is set to a position corresponding to the set and input binding position. By displacing the rails 17 so as to match, the transport position of the grain culm can be adjusted to the binding position set and input.

[0017]

According to the present invention, the stock arranging member is moved following the grain stem conveyed to the tying device, and based on the error between the set and inputted binding position and the current position of the stock arranging member. Because it is possible to set the moving direction and the moving speed of the pinching end position of the grain stalk in the pinching transport device,
There is an advantage that the transport position of the grain stalk with respect to the binding device can be controlled so that the set and entered binding position can be realized quickly and smoothly.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a configuration of a main part of a combine to which a binding position control device according to an embodiment of the present invention is applied.

FIG. 2 is a block diagram showing a configuration of a control unit of the binding position control device.

FIG. 3 is a flowchart showing a processing procedure of the control unit.

FIG. 4 is a diagram showing contents of a table stored in a ROM constituting a part of the control unit.

FIG. 5 is a diagram showing a relationship between a binding position and a position of a stock alignment member in the binding position control device.

6A and 6B are a plan view and a side view showing a configuration near a binding device of a general combine including the embodiment of the present invention.

[Explanation of symbols]

 11-Bundling Device 12-Stock Alignment Member 15-Nipping and Conveying Device 17-Rail S1, S2-Stock Edge Sensor VR1-Volume Sensor (Stock Alignment Position Detecting Means)

Claims (1)

(57) [Claims] 1. A binding device having a stock aligning member which is movable in a longitudinal direction of a grain stalk and abuts against a stock end of the grain stalk to define a binding position, and a grain stalk accompanying movement in a conveying direction with respect to the binding device. In a combine equipped with a pinching conveyance means in which the pinching position changes in the longitudinal direction of the grain culm, input means for setting and inputting the length from the stock end of the grain culm to the binding position, and A stock end detecting means for detecting the transport position, a stock alignment position control means for moving the stock alignment member in the longitudinal direction of the grain stem based on the detection result of the stock end detection means, and a stock alignment for detecting the position of the stock alignment member Position detecting means, a pinching end position moving means for moving the pinching end position of the cereal culm in the pinching and conveying device, and the length from the stock end to the binding position set and input by the input means and the detection result of the stock alignment position detecting means Pinching position based on Bundling position controller Combine, characterized in that provided movement control means for setting a moving direction and a moving speed of the nip end position by the moving means.