JP2854488B2 - Combine harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mowing device provided at a front end of a mowing frame supported on a traveling body so as to be movable up and down, and an auxiliary mowing device is attached to the mowing frame so as to be movable up and down. Control means for controlling the operation of the raising and lowering actuator of the auxiliary reaper, height detecting means for detecting the height of the auxiliary reaper relative to the cutting frame, and switching between an automatic lifting mode and a lifting and lowering mode. Mode instructing means for instructing the auxiliary mowing device to the target height when the automatic elevating mode is instructed based on the detection information of the height detecting means. When the control operation of raising and lowering is executed, and the lifting / lowering stop mode is instructed,
The present invention relates to a combine harvesting pre-processing device configured to execute a control operation for raising the auxiliary cutting device to a storage height on an upper side.

[0002]

2. Description of the Related Art The above-mentioned pre-cutting device is a two-stage cutting operation,
In other words, only the tip portion of the planted grain culm is cut by the cutting device, and long stumps remaining in the field are cut short by the auxiliary cutting device.However, conventionally, for the lifting control of the auxiliary cutting device, When the automatic elevating mode is instructed by the mode instructing means, the control operation for elevating the auxiliary reaper to the target height is performed based on the detection information of the height detecting means, while the elevating stop mode is instructed. Sometimes, the lift actuator is controlled to move the auxiliary mowing device to the storage height on the upper side, but once the storage height is increased, the control operation of the lift actuator is not performed. .

[0003]

However, when the lifting actuator is constituted by, for example, a hydraulic cylinder, the auxiliary reaping device descends from the storage height due to oil leakage or the like after being once raised to the storage height. However, according to the above-described related art, in this case, since the control operation of the elevating actuator is not performed, the lowering of the auxiliary reaper cannot be avoided. For this reason, there is a possibility that the combine harvester may be run without knowing that the auxiliary reaper has been lowered from the storage height and the auxiliary reaper may be damaged by contacting the ground with the ground.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to solve the above-mentioned drawbacks of the prior art by effectively lowering the auxiliary reaper from the stowed height in the lifting / lowering stop mode. To avoid it.

[0005]

According to a first characteristic configuration of a combine harvesting pre-processing apparatus according to the present invention, the control means is configured such that, when the lifting / lowering stop mode is instructed, the auxiliary harvesting apparatus is operated once. After ascending to the storage height
Further, when the vehicle is descending from the storage height, a control operation for raising the auxiliary reaper to the storage height is performed.

[0006] The second characterizing feature, said auxiliary cutting manually operated lifting command means for commanding an instruction to lift actuating device is provided, said control means, said lifting command means
Command to move the auxiliary reaper up and down
If so, the auxiliary reaping device is
The control operation for raising and lowering is executed with priority, the raising and lowering stop mode is instructed, and the auxiliary cutting device is
When the instruction to raise and lower the storage unit is not instructed , the control operation for raising the auxiliary reaper to the storage height is performed only when the auxiliary reaper is lower than the storage height by less than a set amount. The point is that it is configured to.

[0007] A third characteristic configuration is that an alarm means is provided, and the control means is provided when the auxiliary reaping device is lowered from the storage height when the elevation stop mode is instructed. , The warning means is operated.

[0008]

According to the first characteristic configuration of the present invention, when the lifting / lowering stop mode is instructed, the lifting / lowering stop mode is set to the finger.
Control to raise auxiliary reaper to storage height when indicated
The operation is executed and the auxiliary reaper is temporarily
When the auxiliary reaper has been lowered from the storage height after ascending, a control operation for raising the auxiliary reaper to the storage height is performed.

According to the second characteristic configuration, when an instruction to move the auxiliary cutting device up and down is issued by the manually operated up and down instruction means , based on the instruction,
The control action to raise and lower the auxiliary reaper is executed with priority.
You. On the other hand, the lift stop mode is instructed and the lift
Means to move the auxiliary reaper up and down
If not , the control operation for raising the auxiliary reaper to the storage height is executed only when the auxiliary reaper is lower than the storage height by less than the set amount.

Further, according to the third characteristic configuration, when the lifting / lowering stop mode is instructed and the auxiliary cutting device is lowered from the storage height, the alarm means is activated.

[0011]

Therefore, according to the first characteristic configuration of the present invention, the auxiliary reaper does not drop from the storage height in the lifting / lowering stop mode. Problems such as running the combine without knowing that it is descending from the height and damaging the auxiliary reaper by contact with the ground are eliminated.

Further, according to the second characteristic configuration, the auxiliary reaper can be lowered from the storage height by a manual operation, and at the same time, the auxiliary reaper can be reliably operated when no manual operation is performed. Raise to the storage height to prevent damage due to contact with the ground, etc.
Accordingly, the effect of the first characteristic configuration can be secured at the same time as securing the manual operation.

Further, according to the third characteristic configuration, since the operator or the like knows that the auxiliary cutting device has been lowered from the storage height by the operation of the alarm means, for example, the traveling of the combine is stopped. Alternatively, by taking measures such as raising the auxiliary reaper to the storage height, it is possible to effectively prevent the auxiliary reaper from being damaged by contact with the ground.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 shows a combine with all culms, in which a threshing device 3 is mounted on a traveling machine body 2 provided with a crawler traveling device 1, and a pre-cutting device is installed at a front portion of the traveling machine body 2. 4 are connected so as to be able to move up and down freely. The threshing device 3 is provided with a handling chamber 6 for handling and processing the input grain stalks with a handling drum 5 rotating around the longitudinal axis of the machine body. A sorting unit 8 that sorts kernels from the processed material that leaks is provided.

The cutting pre-processing device 4 is provided with a cutting frame 10 which is supported on the traveling machine body 2 so as to be able to move up and down, and the front end of the cutting frame 10 scrapes the tip of the planted grain culm. A rotating reel 9 and a clipper-type cutting device 11 for cutting planted grain culm are provided, and further behind the auger 12 for gathering the cut grain culm to the center side.
And a conveyor 13 for conveying the collected culms toward the threshing device 3 at the rear of the machine.

The cutting frame 10 is pivotally supported at the front of the threshing device 3 so as to be swingable about a horizontal axis P4, and the front end of a hydraulic cylinder 14 is linked to the lower rear of the cutting frame 10. The base end of the hydraulic cylinder 14 is linked to the front part of the traveling body 2. The mowing frame 10 is raised and lowered based on the driving of the hydraulic cylinder 14, and the height of the mowing device 11 is changed by the lifting and lowering. Further, a second angle sensor 22 including a potentiometer whose resistance value changes according to the swing angle of the cutting frame 10 around the horizontal axis P4 is provided, and the resistance value is converted to a voltage value, and the control device described later is used. H (see FIG. 1). Therefore, the control device H
Can detect the vertical position of the cutting frame 10 with respect to the traveling machine body 2 based on information from the second angle sensor 22.

An auxiliary mowing device 16 is attached to the mowing frame 10 at a position rearward of a position where the mowing device 11 is provided by a support arm 15 so as to be able to move up and down with respect to the mowing frame 10. In order to improve the threshing process efficiency in the threshing device 3, the auxiliary cutting device 16 has a high cutting posture in which the position of the cutting device 11 is to cut only the tip of the planted grain culm and throw it into the threshing device 3. In this case, the stump is lowered so as to have an action posture projecting below the cutting frame 10, whereby a long stump remaining in the field after cutting only the tip portion can be cut short. On the other hand, when the auxiliary reaper 16 is not in the above-mentioned working posture, the auxiliary reaper 16 is raised to retract to the storage height position on the upper side.

A structure for attaching the auxiliary cutting device 16 to the cutting frame 10 will be described. As shown in FIG. 3, a bracket 17 is attached to a bottom plate of a transport conveyor 13 which constitutes a part of the mowing frame 10, and the bracket 17 allows the tubular support frame 18 to be mounted.
Are rotatably supported. The cylindrical support frame 1
8, a support frame 15 for supporting the auxiliary reaper 16 is provided.
And a pair of left and right first support frames 15a forming a part of the first support frame 15a are integrally connected. The pair of left and right first support frames 15a can rotate around the rotation axis P1 of the cylindrical support frame 18. It has become. Further, a part of the pair of left and right first support frames 15a is linked to an arm tip of a hydraulic cylinder 20 having an upper base linked to the mowing frame 10 side. At the tip of each of the first support frames 15a, a pipe frame 19 spanning the entire cutting width is erected and connected, and at the left and right ends of the pipe frame 19, a pair of left and right parts forming a part of the support frame 15 are respectively provided. The second support frame 15b is connected to the second support frame 15b, and the auxiliary cutting device 16 is provided over the distal end of each of the second support frames 15b.

In the above structure, the cutting frame 10
The auxiliary cutting device 16 mounted on the cylindrical frame 18 is driven to swing around the rotation axis P1 of the cylindrical support frame 18 by the drive of the hydraulic cylinder 20, so that the cutting frame 1
It is raised and lowered with respect to 0. Accordingly, the hydraulic cylinder 20 corresponds to an actuator for raising and lowering the auxiliary reaper 16.

When the auxiliary mowing device 16 is raised to the storage height, the front and rear inclination posture is changed so that the auxiliary mowing device 16 is effectively stored in an empty space behind and below the auger 12. A link mechanism R is provided. As shown in FIG. 3, in the link mechanism R, first, the left and right support portions 34 of the auxiliary reaper 16 are pivotally supported by the second support frame 15b so as to be rotatable around the horizontal axis P2. Also, a connecting portion 35 fixed to the bracket 17 and an arm 37 fixed to a rotating rod 36 which is supported so as to be rotatable over the first support frame 15a and the second support frame 15b on one side. The space is pivotally connected by a push-pull rod 38.
Further, an arm 39 that rotates integrally with the rotation rod 36 on the lateral side of the second support frame 15b,
Of the left and right support portions 34 of the supporting member 34
Are linked together. Therefore, the left and right support portions 34 of the auxiliary reaper 16, the linking member 40, and the rotating rod 3
6, the push / pull rod 38 and the arms 37 and 39 constitute a link mechanism R.

According to the link mechanism R, as the auxiliary mowing device 16 is relatively raised, the auxiliary mowing device 16 is moved forward and backward due to the bias between the vertical swing support point P1 and the proximal pivot point P3 of the link mechanism R. The inclined posture is relatively lowered, and the auxiliary reaping device 16 is effectively stored in an empty space on the lower rear side of the auger 12, and is stored without protruding below the reaping frame 10 (FIG. 3).

As shown in FIG. 3, near the rotation axis P1 of the cylindrical support frame 18, a swing angle of the first support frame 15a which moves up and down around the axis P1 is detected. One angle sensor 23 is provided. Specifically, the first angle sensor 23 includes an input shaft 23a linked to the first support frame 15a so as to link to the first support frame 15a, and
And a rotary potentiometer having a base mounted on the rotary potentiometer. From the above, the first angle sensor 23
Corresponds to height detecting means for detecting the height of the auxiliary cutting device 16 with respect to the cutting frame 10.

A limit switch 24 for detecting that the auxiliary reaper 16 has reached a lower limit position with respect to the traveling body 2 is attached to a tip of a bracket 30 projecting forward from the traveling body 2. On the other hand, a contact plate 29 that contacts the limit switch 24 is attached to the support arm 15.

Next, the reaper 11 and the auxiliary reaper 16
The configuration for controlling the elevation of the mowing device 11 will be described below. As shown in FIG. 1, a control device H using a microcomputer is provided, and the control device H is provided with a manual first elevation switch for instructing the harvester 11 to elevate and lower. 27, a second raising / lowering switch 28 serving as a manually operated lifting / lowering instruction unit for instructing an instruction to raise / lower the auxiliary reaper 16, the first angle sensor 23, the second angle sensor 22, and the limit switch 24. Are input. The elevation control mode of the auxiliary reaper 16 can be switched between an automatic elevation mode and an elevation stop mode, and a signal is input from a manual type auto switch 26 as mode instruction means for instructing the switching. ing. Although not shown, a manual reaping clutch for turning on and off transmission of the engine output to the pre-cutting device 4 is provided,
A signal from the reaping clutch switch 25 for detecting the on / off state of the reaping clutch is also input to the control device H. Further, from the control device H, the two hydraulic cylinders 14,
20 and a drive signal for an alarm lamp 21 as an alarm means are output.

A control means 100 for controlling the operation of the hydraulic cylinder 20 as an elevating actuator of the auxiliary cutting device 16 is constituted by using the control device H, and the control means 100 comprises the first angle sensor 23. If the automatic switch 26 has instructed the automatic elevating mode based on the detection information of the
6 is executed to raise and lower the auxiliary cutting device 16 to the storage height on the upper side when the automatic switch 26 instructs the elevating stop mode. It is configured as follows.
Further, the control means 100, when the lifting stop mode is indicated, the auxiliary cutting device 16, once
After the ascent to the storage height, when the descent from the storage height is performed, a control operation of raising the auxiliary reaper 16 to the storage height is performed.

Further, the control means 100 controls the second lifting / lowering
The auxiliary reaper 16 is moved up and down by the switch 28.
If an instruction has been issued,
The control operation for raising and lowering the auxiliary reaper 16 is prioritized and executed.
The lift stop mode is instructed and the second lift
The auxiliary reaper 16 is moved up and down by the switch 28.
When no instruction is given , the auxiliary reaper 1
The control operation for raising the auxiliary reaping device 16 to the storage height is performed only when the storage device 6 is lower than the storage height by less than a set amount. That is, when the auxiliary reaper 16 is lowered from the storage height by the set amount or more, the control operation for raising the auxiliary reaper 16 to the storage height is not executed. Thus, in the lifting stop mode, the second mowing switch 28 can be manually operated to raise and lower the auxiliary reaper 16 to a desired height.

The control means 100 controls the auxiliary reaper 16 when the elevation stop mode is instructed.
When is lowered from the storage height, the alarm lamp 21 is configured to blink, for example. This notifies the worker that the auxiliary reaper 16 has been lowered from the storage height.

Next, the operation of the control device H will be described with reference to the flowchart shown in FIG. First, the command state of the manually operated second elevating switch 28 is checked, and the hydraulic cylinder 20 is actuated by the ascending or descending instruction to move the auxiliary cutting device 16 up or down. Here, the auxiliary reaping device 16 is lowered only when the elevation position of the reaping frame 10 with respect to the traveling machine body 2 exceeds a predetermined height, that is, only when the posture of the reaping device 11 is a high-cuttering posture. I do. The limit switch 2
When 4 is ON, the auxiliary reaper 16 is not lowered.

Next, it is determined whether or not the mowing clutch switch 25 is ON, and if it is ON, the state of the auto switch 26 is further determined. If the auto switch 26 is set to the automatic elevating mode, the automatic height control for maintaining the height of the auxiliary reaper 16 at the target height is executed. On the other hand, when the cutting clutch switch 25 is in the OFF state or the auto switch 26 is set in the elevating stop mode, it is checked whether or not the height of the auxiliary cutting device 16 is the storage height. When it is lower than the storage height, the alarm lamp 21 is operated. In that case, it is further checked whether or not the descending amount of the auxiliary reaper 16 is less than the set amount, that is, whether or not it is near the storage height, and if it is in the vicinity, it is raised to the storage height.

[Alternative Embodiment] In the above-described embodiment, the actuator 20 for raising and lowering the auxiliary reaper 16 is constituted by a hydraulic cylinder, but the invention is not limited to this.

In the above embodiment, the height detecting means 23 for detecting the height of the auxiliary cutting device 16 with respect to the cutting frame 10 is used.
Is shown by a rotary potentiometer, but the present invention is not limited to this.

In the above embodiment, in the automatic elevating mode, the control operation for raising and lowering the auxiliary reaper 16 to the target height is executed, and in the elevating stop mode, the auxiliary reaper 16 is raised to the upper storage height. control means 100 for performing a control operation that is, the auxiliary cutting device 16 by lifting command means 28 Noboru
If an instruction to lower the actuator has been issued,
Priority is given to the control operation for raising and lowering the auxiliary reaper 16 based on the
And the lift stop mode is instructed and the lift command
An instruction to move the auxiliary reaper 16 up and down at the step 28 is given by a finger.
When the command has not been issued, the auxiliary reaper 16
Only when it is lower than the set amount, the auxiliary reaper
Although the control operation for raising the height 16 to the storage height is shown, it is not always necessary to provide the elevation command means 28. When the elevation command means 28 is not provided, the control means 100 performs the control operation to raise the auxiliary cutting device 16 to the storage height in the lifting stop mode regardless of the amount of the auxiliary reaper 16 lowered from the storage height. Will be executed.

In the above embodiment, the alarm means 21 is constituted by an alarm lamp. However, the alarm means may be an alarm buzzer or the like.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[0035]

[Brief description of the drawings]

FIG. 1 is a block diagram of a control configuration.

FIG. 2 is a flowchart of a control operation;

FIG. 3 is a side view of a main part of the pre-cutting device.

FIG. 4 is a schematic side view of the combine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Cutting device 2 Traveling body 10 Cutting frame 16 Auxiliary cutting device 20 Elevating actuator 100 Control means 23 Height detection means 26 Mode instruction means 28 Elevation command means 21 Alarm means

Claims (3)

(57) [Claims] A reaper (11) is provided at a front end of a reaping frame (10) supported on a traveling body (2) so as to be able to move up and down, and an auxiliary reaper (16) is arranged so as to be able to move up and down. The auxiliary cutting device (16) is attached to the cutting frame (10),
Control means (100) for controlling the operation of (0), and the cutting frame (10) of the auxiliary cutting device (16).
Height detecting means (23) for detecting a height with respect to the motor; and mode instruction means (26) for instructing the control means (100) to switch between an automatic elevating mode and an elevating stop mode. 100) The height detecting means (23)
When the automatic elevating mode is instructed based on the detection information, the control operation for elevating the auxiliary reaper (16) to the target height is executed, and the elevating stop mode is instructed. A combine harvesting pre-processing device configured to perform a control operation to raise the auxiliary reaping device (16) to an upper storage height, wherein the control means (100) comprises: If the mode is instructed, the auxiliary cutting device (16), said
The harvester of a combine configured to execute a control operation to raise the auxiliary reaping device (16) to the storage height when descending from the storage height after ascending to the storage height. Pretreatment device. 2. The auxiliary cutting device (16) is moved up and down.
Manual operation type lifting / lowering command means (28)
The control means (100) is provided with the elevation command means (28)
The instruction to raise and lower the auxiliary reaper (16) at
If a command has been issued, the auxiliary
Priority is given to the control operation for raising and lowering the reaper (16).
And the elevation stop mode is instructed and the elevation command
In step (28), the auxiliary reaper (16) is raised and lowered.
The auxiliary cutting device is not instructed.
If (16) is lower than the storage height by less than a set amount
Only raise the auxiliary reaper (16) to the storage height
2. The combine harvester pre-processing device according to claim 1, wherein the device is configured to execute a rising control operation . 3. An alarm means (21) is provided, and said control means (100) is adapted to lower said auxiliary reaper (16) from said storage height when said elevating stop mode is instructed. The alarm means (2
3. The method according to claim 1, further comprising the step of:
The combine harvesting pretreatment device according to the above.