JPH09289820A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester that can prevent the body of the combine harvester from unexpected lateral rolling accompanying the start of threshing work while keeping the attitude control means unoperative when the combine harvester is in grain discharge condition. SOLUTION: This combine harvester, provided with attitude control means A that maintains lateral attitude of the body of the combine harvester vertically, and an unloader which discharges grains from a grain tank, comprises such configuration that the attitude of the grain unloader can be changed from working position for discharging grains to rest position within the limits of machine breadth, or vice versa, that a rest position switch 23 for detecting position of the unloader is provided for determining whether the unloader is in rest position or not, and that the rest switch 23 is interlocked with the attitude control means A so that the attitude control means A can be actuated only when the unloader is in rest position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to linking means for activating or deactivating the attitude control means for tilting left and right in a combine depending on the state of the unloader.

[0002]

2. Description of the Related Art As a device for controlling the left and right inclination posture of a body, as disclosed in Japanese Patent Laid-Open No. 7-31262,
Known is a hydraulic cylinder that lifts and lowers a track frame. Further, as an unloader that can be switched between an operating position and a storage position, the one disclosed in Japanese Utility Model Laid-Open No. 6-39 is known. Has been.

[0003]

For example, when the grain in the Glen tank is being discharged by the unloader with the machine tilted to the left or right, if the threshing clutch is turned on to handle the pillow, Since the attitude control means operates to tilt the machine body so as to return it to the horizontal attitude, there is a possibility that the unloader moves up and down to shift the grain discharge place, or the grain is discharged to an unintended place. Therefore, the first object of the present invention is to avoid the above-mentioned inconvenience by preventing the posture control means from operating in the grain discharge state.

Further, when the posture control means is operated when the vehicle travels after finishing the mowing work or the pillow handling work, if the predetermined posture is set to be tilted, the vehicle may run while tilted. However, it is predicted that the driver will not notice that he is traveling on a slope when the predetermined posture is set horizontally, and in that case, it is difficult to control. Therefore, a second object of the present invention is to prevent the inconvenience of traveling without noticing the operation of the attitude control means.

[0005]

[Means for Solving the Problems]

[Structure] The first invention is to control the operation of an actuator capable of adjusting the height of the left and right traveling devices with respect to the vehicle,
In a combine equipped with a posture control means for maintaining the body in a predetermined posture in the left-right direction and an unloader capable of discharging the grains in the grain tank, the unloader is provided with a working position for discharging the grains and an in-machine width. The attitude control means operates only when the unloader is in the storage position, and the position detection means is provided for detecting whether or not the unloader is present in the storage position. It is characterized in that the position detecting means and the attitude control means are linked so as to be possible.

According to a second aspect of the present invention, in the first aspect of the present invention, a working state detecting means for detecting whether the working clutch is engaged or disengaged is provided. It is characterized in that the working state detecting means, the position detecting means, and the attitude control means are linked so as to reduce the height.

[Operation] According to the structure of claim 1, since the attitude control means does not operate when the unloader is not in the storage position, the pillow should be handled when the machine body is tilted and the grain is discharged. Even if the threshing clutch is turned on, the aircraft does not return to the predetermined posture and does not move, so that the unloader position at that time is maintained and the inconvenience of shifting the grain discharging place does not occur. In addition, since the grain is not discharged during the mowing operation and the unloader is kept in the storage position, if the erroneous operation is accidentally performed with the unloader in the working position, the posture control does not work. The effect that makes you forget to store is generated.

When the work clutches such as the threshing clutch and the reaping clutch are disengaged, it means that the work is not performed, that is, the machine is stopped or the vehicle is traveling. At that time, if the attitude control means operates, the aircraft is maintained in a predetermined attitude such as horizontal even when traveling on a slope.
It is inconvenient for the driver because it becomes difficult to operate in response to changes in road surface conditions, such as when the driver is unaware of running on slopes. According to the configuration of claim 2, when the work clutch is disengaged and the unloader is in the retracted position, the height of the machine body is lowered to the minimum level. Therefore, the machine that supports the crawler traveling device during traveling traveling. The platform and the body are parallel to each other, and the lateral undulation of the road surface is directly transmitted to the operator, and the center of gravity of the body can be minimized to enable stable driving.

[Effect] With the combine according to the first aspect, the pillow handling work and the extraction of the grains to the truck bed can be performed without any inconvenience, while obtaining the caution effect of noticing that the unloader is forgotten to be stored during traveling of the mowing work. As a result, the tilting of the machine body when using the unloader is avoided, and the grains can be discharged well.

In addition to the above effects, the combine according to claim 2 has the advantages that the road surface condition can be accurately grasped except during work traveling, and stable traveling traveling due to a low center of gravity can be obtained.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, a combine is shown, 1 is a crawler traveling device, 2 is a body, 3 is a mowing unit, 4
Is a thresher, 5 is a control unit, 6 is a Glen tank, and 7 is an unloader. This combine is provided with a posture control means A for maintaining the left and right postures of the machine body 2 in a predetermined posture such as absolute horizontal or parallel to the ground.

As shown in FIGS. 3 and 5, a track frame 1a for supporting the crawler traveling device 1 and a body frame 2
A pair of front and rear swing links 8 and 9, an interlocking rod 10 interlockingly connecting these, and a hydraulic cylinder 1.
Left and right drive lifting mechanisms 12 and 12 composed of 1 and a body 2
An attitude control means (which is a known technique disclosed in Japanese Patent Application Laid-Open No. 7-31262) A is configured by the horizontal sensor 13 attached to the control unit 14 and the control device 14. Horizontal sensor 13
Based on the detection information of the left and right rolling control valve 15,
By switching 15 to move the crawler traveling device 1 up and down with respect to the machine body with the axis of the drive sprocket 21 supported by the mission 20 as a reference, the machine body 2 is moved to the left and right regardless of the unevenness and undulation of the ground. It functions to maintain horizontal orientation.

As shown in FIGS. 1 and 2, the unloader 7
Is a horizontal screw conveyor 19 capable of rotating and undulating with respect to the vertical screw conveyor 16 by a vertical screw conveyor 16 rising from the bottom of the Glen tank 6, a rotating mechanism 17 using an electric motor, and a lifting mechanism 18 using a hydraulic lifting cylinder. It consists of and. Therefore, by both mechanisms 17 and 18, the horizontal screw conveyor 19 is placed on the mounting tool 22 beside the control section and stored in the machine width, and the storage posture is moved from the mounting tool 22 to the outside of the machine width. It is possible to switch the unloader 7 to the projected posture for discharging the grain.

As shown in FIG. 4, the mounting tool 22 is equipped with a storage switch 23 that operates when the horizontal screw conveyor 19 is mounted thereon.
3 constitutes a position detecting means for detecting whether or not the unloader 7 is present at the storage position. The attitude control means A is provided only when the unloader 7 is in the storage position.
The storage switch 23 and the attitude control means A are linked by the control device 14 so that the control switch 14 can be operated.

The control device 14 is connected with a rotating mechanism 17, an elevating mechanism 18, and an unloader operating device 24 such as a cross operating lever or a rotary switch for operating them. By operating the operating device 24, the unloader 7 is operated. To the storage position or the operating position. Therefore, when the storage switch 23 is not operated, even if the operation switch 25 of the attitude control means A is turned on, the ON signal is cut, and the left and right hydraulic cylinders 11, 11 are restrained from moving. It Therefore, when the unloader 7 is operated to the operating position for discharging the grain, the body is not tilted left and right even if the operation switch 25 is accidentally turned on, and the posture at that time is maintained.

Further, a working state detecting means 28 for detecting whether the working clutch 27 such as a reaping clutch or a threshing clutch is engaged or disengaged is provided. When the working clutch 27 is disengaged and the unloader 7 is in the retracted position. The work state detecting means 28 and the storage switch 23 are arranged so that the height of the machine body 2 is lowered.
The attitude control means A are linked by the control device 14. That is, when the work clutch 27 and the clutch operation tool 26 for turning on and off the work clutch 27 are connected to the control device 14, the work clutch 27 is disengaged, and the unloader 7 is at the retracted position, at that time, the machine body 2 If the height level with respect to the crawler traveling device 1 is other than the minimum level, the hydraulic cylinder 11 is operated to control the low position return control means for dropping the hydraulic cylinder 11 to the minimum level.

As a concrete example, in the traveling state in which the reaping clutch 27 is disengaged and the unloader 7 is in the retracted position, the height of the machine body 2 is the lowest level regardless of whether the operation switch 25 is ON or OFF. Therefore, the left and right crawler traveling devices 1 and 1 are operated in parallel with each other in the left-right direction, and the lowest center of gravity is obtained. In addition, from the pillow handling work state with the unloader 7 in the storage position and the machine stopped,
Even if the threshing clutch 27 is disengaged in order to shift to traveling, the height of the machine is automatically controlled to the lowest level.

As a reference, a flow chart regarding the operation of the attitude control means A is shown in FIG. 6, and a flow chart regarding the operation of the low position return control means is shown in FIG.

[Brief description of drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a plan view of the combine.

FIG. 3 is a side view showing the structure of a drive lifting mechanism.

FIG. 4 is a front view of a mounting tool showing a storage switch.

FIG. 5 is a control block diagram.

FIG. 6 is a diagram showing a flowchart of attitude control means.

FIG. 7 is a diagram showing a flowchart of a low position return control means.

[Explanation of symbols]

 1 Traveling device 6 Glen tank 7 Unloader 11 Actuator 23 Storage switch 27 Work clutch 28 Work state detection means A Attitude control means

Claims (2)

[Claims] 1. A posture control means for maintaining the body in a predetermined posture in the left-right direction by controlling the operation of an actuator capable of adjusting the height of the left and right traveling devices with respect to the body, and the grain in the grain tank. A combiner having a dischargeable unloader, wherein the unloader is configured to be capable of posture switching between a working position for discharging grain and a storage position located within the machine width, and the unloader stores the unloader. Position detecting means for detecting whether or not the position is present at a position is provided, and the position detecting means and the attitude controlling means are linked so that the attitude controlling means can operate only when the unloader is at the storage position. I have a combine. 2. A work state detecting means for detecting whether the work clutch is engaged or disengaged is provided, and when the work clutch is disengaged and the unloader is in the retracted position, the height of the machine body is lowered. The combine according to claim 1, wherein the work state detecting means, the position detecting means, and the attitude control means are linked.