JPH06253645A - Reaping pre-treating device of combine - Google Patents

Abstract

PURPOSE:To prevent the damage of an auxiliary reaping device by effectively avoiding the thrust of the auxiliary reaping device into the ground, when a travel frame is forward tilted. CONSTITUTION:The reaping pre-treating device of a combine is characterized by disposing a reaping device 11 at the front end of a reaping frame 10, disposing an auxiliary reaping device 16 on the rear side of the reaping device 11 in a state capable of freely changing its height based on a travel frame 2, and further disposing a control means 100 for controlling the actions of actuators 14, 20 used for vertically moving the auxiliary reaping device 16, height-detecting devices 22, 23 used for detecting the height of the auxiliary reaping device 16 on the basis of the travel frame 2, and a tilt angle-detecting means 41 used for detecting the tilt angle of the travel frame 2 on its front side, wherein the control means 100 controls so as to keep the auxiliary reaping device 16 at a target height on the basis of the detection information of the height detection means 22, 23, and to raise the auxiliary reaping device 16, when the travel frame is tilted on the front side at an angle higher than a set angle on the basis of the information of the tilt angle-detecting means 41.

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 which is supported to be movable up and down with respect to a traveling body, and an auxiliary mowing device is provided on the rear side of the mowing device. The height of the auxiliary harvesting device is changeable, the control means for controlling the operation of the lifting actuator of the auxiliary harvesting device, and the height detecting means for detecting the height of the auxiliary harvesting device with respect to the traveling aircraft are provided. The control means relates to a combine harvesting pretreatment device configured to execute a control operation for maintaining the auxiliary harvesting device at a target height based on the detection information of the height detecting means.

[0002]

2. Description of the Prior Art The above-mentioned mowing pretreatment device is used for two-step mowing work,
In other words, only the tip of the planted culm is cut by the cutting device, and long stumps remaining in the field are cut short by the auxiliary cutting device, but conventionally the auxiliary cutting device was maintained at the target height. In order to control the height, for example, the auxiliary mowing device is attached to the mowing frame which is supported to be able to move up and down with respect to the traveling machine body so as to be vertically movable, and the height information of the mowing frame with respect to the traveling machine body and the mowing frame are Is configured to detect the height of the auxiliary cutting device with respect to the traveling vehicle body based on the height information of the auxiliary cutting device, and the auxiliary cutting device is maintained at the target height based on the height detection information. The height of the device above ground was kept constant.

[0003]

However, for example, when the combine enters the field from the ridge, the traveling machine body inclines to the front side because the field is lower than the ridge, but according to the above-mentioned conventional technique, Since the height control of the auxiliary harvesting device is performed with reference to the traveling body, even if the traveling body leans forward and the auxiliary harvesting device approaches the ground, there is no control for the height control of the auxiliary harvesting device. Is also not done. Therefore, when the auxiliary harvesting device is descending with respect to the traveling machine body, the auxiliary harvesting device may plunge into the ground and damage the device.

The present invention has been made in view of the above circumstances, and an object of the present invention is to eliminate the drawbacks of the above-mentioned prior art by removing the auxiliary cutting device to the ground when the traveling machine body is inclined forward. It is to effectively avoid the plunge.

[0005]

A first characteristic configuration of a combine harvesting pretreatment device according to the present invention is provided with an inclination angle detecting means for detecting an inclination angle of the traveling machine body toward the front side, and the control means. Is configured to raise the auxiliary reaper when the traveling machine body is tilted forward by a set angle or more based on the information of the tilt angle detection means.

In the second characteristic configuration, the auxiliary mowing device is attached to the mowing frame so as to be vertically movable, and the height detecting means detects a height of the auxiliary mowing device with respect to the mowing frame. It is composed of first height detecting means for detecting and second height detecting means for detecting the height of the mowing frame with respect to the traveling machine body.

[0007]

According to the first characteristic configuration of the present invention, when the control operation for maintaining the auxiliary cutting device at the target height is executed based on the height detection information of the auxiliary cutting device with respect to the traveling body, When the tilt angle detecting means detects that the traveling machine body has tilted forward by the set angle or more, the elevating actuator is activated to raise the auxiliary reaping device.

According to the second characteristic configuration, the auxiliary mowing device is provided by using the mowing frame, and the height detection information of the auxiliary mowing device with respect to the mowing frame and the height detection of the mowing frame with respect to the traveling machine body are detected. The height detection information of the auxiliary cutting device with respect to the traveling body is obtained from the information, and the control operation for maintaining the auxiliary cutting device at the target height is executed based on the height detection information.

[0009]

As described above, according to the first characteristic construction of the present invention, when the traveling machine body is tilted forward by the set angle or more, the auxiliary reaper is raised, so that the auxiliary reaper as in the conventional case is used. The problem that the auxiliary harvesting device plunges into the ground and damages the device because the vehicle is descending with respect to the traveling body is eliminated.

Further, according to the second characteristic configuration, if the supporting structure of the auxiliary cutting device is simplified by providing the auxiliary cutting device by utilizing the cutting frame, the elevation control of the auxiliary cutting device can be performed as desired. It can be done.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 shows an all-culm throw-in type combine. The combine has a threshing device 3 mounted on a traveling machine body 2 equipped with a crawler traveling machine 1 and a cutting pretreatment device on the front part of the traveling machine body 2. 4 is configured to be vertically movable. The threshing device 3 is provided with a handling room 6 for handling and processing the input grain culm by a handling barrel 5 which rotates around the longitudinal axis of the machine body, and below the handling room 6, the handling room 6 is provided with the handling chamber 6 and the concave 7 A sorting unit 8 for sorting grains from the leaked processed material is provided.

The mowing pretreatment device 4 is provided with a mowing frame 10 which is supported to be movable up and down with respect to the traveling machine body 2, and the front end of the mowing frame 10 scrapes the tip of the planted culm. A rotary reel 9 for inserting and a clipper-type cutting device 11 for cutting the planted grain culms are provided, and further, an auger 1 for collecting the trimmed grain culms to the center side behind the cutting device 11.
2 and a conveyor 13 that conveys the gathered grain culms toward the threshing device 3 at the rear of the machine body.

The mowing frame 10 is pivotally supported on the front part of the threshing device 3 so as to be swingable around a horizontal axis P4, and the tip part of the hydraulic cylinder 14 is linked to the lower rear part of the mowing frame 10. The base end portion of the hydraulic cylinder 14 is linked to the front portion of the traveling machine body 2. The reaping frame 10 is moved up and down based on the drive of the hydraulic cylinder 14, and the height of the reaping device 11 is changed by the elevation. In addition, a second angle sensor 22 including a potentiometer whose resistance value changes according to the swing angle of the mowing frame 10 around the horizontal axis P4 is provided, and the resistance value is converted into a voltage value to be described later by a control device. H (see FIG. 1). Therefore, the second angle sensor 22 corresponds to a second height detecting means for detecting the height of the mowing frame 10 with respect to the traveling machine body 2.

The harvesting device 11 of the harvesting frame 10
The auxiliary mowing device 16 is attached to the mowing frame 10 by the support arm 15 so as to be movable up and down on the rear side of the installation position of the auxiliary mowing device 16.
The height of the cutting frame 10 with respect to the cutting frame 10 can be freely changed. Then, the auxiliary harvesting device 16 uses the harvesting device 11 in order to improve the threshing processing efficiency in the threshing device 3.
Is set to a high cutting position in which only the tips of the planted culms are mowed and thrown into the threshing device 3, the cutting frame 10 is lowered so as to have a working position projecting downward. As a result, long stumps remaining in the field after cutting only the tips of the ears are cut short. On the other hand, when the auxiliary harvesting device 16 is not in the working posture,
Usually, it is raised so as to be retracted to the storage height position on the upper side.

The mounting structure of the auxiliary cutting device 16 to the cutting frame 10 will be described. As shown in FIG. 3, a bracket 17 is attached to the bottom plate of the conveyor 13 that constitutes a part of the reaping frame 10, and the tubular support frame 18 is attached by the bracket 17.
Is rotatably supported. The tubular support frame 1
8 includes a support frame 15 that supports the auxiliary harvesting device 16.
A pair of left and right first support frames 15a forming a part of the above are integrally connected, and the pair of left and right first support frames 15a can be rotated around the rotation axis P1 of the tubular support frame 18. It has become. Further, an arm tip portion of a hydraulic cylinder 20 having an upper base end portion linked to the cutting frame 10 side is linked to a part of the pair of left and right first support frames 15a. A pipe frame 19 extending over the entire cutting width is erected on the front end of each of the first support frames 15a, and a pair of left and right pipe frames 19 are provided at the left and right ends of the pipe frame 19, respectively. The second support frames 15b are connected to each other, and the auxiliary harvesting device 16 is installed over the respective tip portions of the second support frames 15b.

In the above structure, the mowing frame 10
The auxiliary mowing device 16 attached to the rocking frame 1 is swingably driven around the rotation axis P1 of the tubular support frame 18 by the driving of the hydraulic cylinder 20, and the mowing frame 1
It goes up and down with respect to 0. Therefore, the hydraulic cylinder 20 corresponds to the lifting actuator of the auxiliary harvesting device 16.

When the auxiliary mowing device 16 is raised to the storage height, its front and rear inclination posture is changed so that the auxiliary mowing device 16 is effectively stored in the empty space on the lower rear side of 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 harvesting device 16 are pivotally supported by the second support frame 15b so as to be rotatable around the horizontal axis P2. In addition, a connecting portion 35 fixed to the bracket 17 and an arm 37 fixed to a rotating rod 36 rotatably supported over the first supporting frame 15a and the second supporting frame 15b on one side. The spaces are pivotally connected by a push-pull rod 38.
Also, the arm 39 that rotates integrally with the rotation rod 36 on the lateral side portion of the second support frame 15b, and the auxiliary harvesting device 16
The rear side of the fulcrum of the left and right support portions 34 of the
Are linked by. Therefore, the left and right support portions 34 of the auxiliary harvesting device 16, the linking member 40, and the rotating rod 3
6, the push / pull rod 38, and the arms 37 and 39 form a link mechanism R.

According to the link mechanism R, as the auxiliary mowing device 16 rises relative to the auxiliary mowing device 16, due to the deviation between the elevation swing fulcrum P1 and the base end side pivot fulcrum P3 of the link mechanism R. The inclined posture is relatively lowered, and the auxiliary mowing device 16 is effectively stored in the empty space on the lower rear side of the auger 12 and can be stored below the mowing frame 10 without protruding (see FIG. See the phantom line in 3.).

A lock mechanism is provided for mechanically holding the auxiliary harvesting device 16 in a state of being raised to the storage height. As shown in FIG. 3, a manually operated lock lever 32 is attached to a side plate of the conveyor 13 so as to be rotatable around a horizontal axis P5, and the lock lever 32 is located below the horizontal axis P5. Is formed in a hook shape. On the other hand, the horizontal bar 33a is attached to the support plate 33 protruding from the upper side of the first support frame 15a.
Is attached, and when the lock lever 32 is rotated rearward around the horizontal axis P5, the hook-shaped portion of the tip end thereof moves forward and engages with the horizontal bar 33a. It is supposed to do. In addition, in order to detect that the lock lever 32 is operated to the engagement position, a micro switch type lock switch 31 is provided so as to contact the lock lever 32, and the lock lever 32 has an upper portion. A grip portion 32a is provided.

As shown in FIG. 3, in the vicinity of the rotation axis P1 of the tubular support frame 18, the swing angle of the first support frame 15a which swings up and down around the axis P1 is detected. A 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 with the first support frame 15a, and the bracket 17 is provided.
It consists of a rotary potentiometer with a base attached to it. From the above, the first angle sensor 23
Corresponds to the first height detecting means for detecting the height of the auxiliary cutting device 16 with respect to the cutting frame 10. Therefore, the first angle sensor 23 and the second angle sensor 22 constitute a height detecting means for detecting the height of the auxiliary cutting device 16 with respect to the traveling machine body 2.

A limit switch 24 for detecting that the auxiliary cutting device 16 has reached the lower limit position for the traveling machine body 2 is attached to the tip of a bracket 30 projecting forward from the traveling machine 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 structure for controlling the raising and lowering of the reaping device 11 and the auxiliary reaping device 16 will be described. As shown in FIG. 1, a control device H using a microcomputer is provided, and the control device H includes: Manual type first elevating switch 27 for instructing the raising and lowering of the mowing device 11, the auxiliary mowing device 1
6, a second manual elevation switch 28 for instructing the elevation, the first angle sensor 23, the second angle sensor 22, the lock switch 31, the limit switch 24, and inclination of the traveling machine body 2 to the front side. Each signal from an inclination sensor 41 as an inclination angle detecting means for detecting an angle is input. Further, a signal from a manual type automatic switch 26 for switching the raising / lowering control mode of the auxiliary harvesting device 16 between the automatic raising / lowering mode and the raising / lowering stop mode is inputted. Although not shown, a manual cutting clutch for turning on / off the transmission of the engine output to the pre-processing device 4 is provided, and the signal from the cutting clutch switch 25 for detecting the on / off state of the cutting clutch is also controlled. Input to the device H. Further, from the control device H, the both hydraulic cylinders 1
Drive signals for the alarm lamps 4, 20 and the alarm lamp 21 as the alarm means are output.

Utilizing the control device H, a control means 100 for controlling the operation of the hydraulic cylinder 20 as the lifting actuator of the auxiliary harvesting device 16 is constructed. Then, the control means 100, when the automatic raising / lowering mode is instructed by the auto switch 26, causes the first angle sensor 23 and the second angle sensor 2 to operate.
A control operation for maintaining the auxiliary cutting device 16 at a target height with respect to the traveling machine body 2 is executed based on the detection information of No. 2 and the traveling machine body 2 sets the set angle (for example, 5) based on the information of the tilt sensor 41. The auxiliary mowing device 16 is configured to be raised to the storage height on the upper side when tilted forward by more than 10 degrees). The control device H is
When the raising / lowering stop mode is instructed by the auto switch 26, the auxiliary mowing device 16 is raised to the storage height.

Next, the lifting control operation by the control unit H will be described with reference to the flow chart shown in FIG. First, it is checked whether or not the reaping clutch switch 25 is ON, and if it is ON, the state of the auto switch 26 is further checked. If the auto switch 26 is in the ON state, that is, in the automatic raising / lowering mode, the state of the lock switch 31 is checked, and if it is in the ON state, the alarm lamp 21 is activated to prompt the operator or the like to release the lock lever 32. Operate. If the lock switch 31 is OFF, after the storage flag is turned ON, the tilt sensor 41 further confirms that the tilt angle of the traveling machine body 2 to the front side is not greater than or equal to the set angle, and the auxiliary harvesting device 16 is set to the target height. Performs automatic height control to maintain the height.

On the other hand, in the automatic raising / lowering mode, when the inclination angle of the traveling machine body 2 toward the front side is equal to or more than the set angle, the height of the auxiliary cutting device 16 is checked to check the auxiliary cutting device 16
If the height of the storage is the storage height, the storage flag is set to O.
FF and return to the beginning of the flow. If the height is lower than the storage height, it is further checked whether or not the height of the auxiliary mowing device 16 is near the storage height, and if it is near, it is raised to the storage height, and if it is not near, the storage flag. Raise to the storage height only when is ON.

Further, when the auto switch 26 is in the OFF state, that is, when the elevator stop mode is set, the state of the lock switch 31 is checked, and only when it is in the OFF state,
The alarm lamp 21 is operated in order to prompt an operator or the like to lock the lock lever 32. Incidentally, when the mowing clutch switch 25 is in the OFF state and after the state of the lock switch 31 is judged, as in the automatic lifting mode,
A process according to the height of the auxiliary harvesting device 16 is performed.

The controller H checks the command state of the second manual elevation switch 28 by an interrupt process other than the control operation described above, and raises or lowers the auxiliary reaper 16 based on the command state. The hydraulic cylinder 20
Operate. Here, the auxiliary harvesting device 16 is lowered only when the raising / lowering position of the harvesting frame 10 with respect to the traveling machine body 2 exceeds a predetermined height, that is, when the posture of the harvesting device 11 is the high harvesting posture, and the action posture and To do. When the limit switch 24 is ON, the auxiliary mowing device 16 is not lowered.

[Other Embodiments] In the above-described embodiment, the auxiliary mowing device 16 is attached to the mowing frame 10 supported so as to be vertically movable with respect to the traveling machine body 2 so as to be movable up and down, and the auxiliary mowing device 16 with respect to the traveling machine body 2 is mounted. However, it is not always necessary to attach it to the mowing frame 10, and for example, it may be attached to another arm that is directly moved up and down with respect to the traveling machine body 2. In this case, the height detecting means for detecting the height of the auxiliary cutting device 16 with respect to the traveling machine body 2 is not the first and second height detecting means 22 and 23 as in the above embodiment, but the traveling of the arm. It is composed of one height detecting means such as a rotary potentiometer for detecting a rotation angle with respect to the machine body 2.

In the above embodiment, the case where the hydraulic cylinder 20 is operated as the lifting actuator of the auxiliary cutting device 16 has been described, but the lifting actuator is not limited to the hydraulic cylinder, but may be an electric motor or the like.

In the above embodiment, the height detecting means 22, 23
Although the first height detecting means 23 and the second height detecting means 22 constituting the above are configured by the rotary potentiometer, the present invention is not limited to this.

In the above embodiment, the inclination angle detecting means 41 is composed of the inclination sensor, but the invention is not limited to this. Further, the set angle serving as a control judgment criterion can be appropriately changed and set other than the value (5 degrees) in the embodiment.

In the above embodiment, when the traveling machine body 2 is tilted forward by the set angle or more, the auxiliary reaper 16 is raised to the upper storage height, but the storage height is not always required. It is not necessary to raise the height to a predetermined height, and for example, it may be configured to raise a predetermined height.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[0034]

[Brief description of drawings]

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

FIG. 2 is a flowchart of control operation.

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

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

[Explanation of symbols]

 11 Mowing device 2 Traveling machine body 10 Mowing frame 16 Auxiliary mowing device 14,20 Elevating actuator 100 Control means 22,23 Height detecting means 41 Inclination angle detecting means 23 First height detecting means 22 Second height detecting means

Claims (2)

[Claims] 1. A mowing frame (10) in which a mowing device (11) is supported on a traveling machine body (2) so as to be vertically movable.
An auxiliary mowing device (16) provided at the front end of the mowing device (16) so that the height with respect to the traveling machine body (2) can be freely changed at the rear side of the mowing device (11). Actuator (2
0) control means (100) for controlling the operation, and height detection means (22, 23) for detecting the height of the auxiliary harvesting device (16) with respect to the traveling machine body (2) are provided. The means (100) includes the height detecting means (22,
23) based on the detection information of the auxiliary harvesting device (1
6) A combine pre-mowing pretreatment device configured to execute a control operation for maintaining 6) at a target height, which comprises an inclination angle detecting means for detecting an inclination angle of the traveling machine body (2) toward the front side. 41) is provided, and the control means (100) is provided with the inclination angle detection means (4).
When the traveling machine body (2) tilts forward by a set angle or more based on the information of 1), the auxiliary harvesting device (1)
6) A combine pre-mowing treatment device configured to raise. 2. The auxiliary mowing device (16) is attached to the mowing frame (10) so as to be vertically movable, and the height detecting means (22, 23) is provided in the auxiliary mowing device (16). A first height detecting means (23) for detecting a height with respect to the mowing frame (10) and a second height detecting means (22) for detecting a height of the mowing frame (10) with respect to the traveling machine body (2). The combine harvesting pretreatment device according to claim 1, which is configured by: