JP3251246B2 - Combine attitude control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine having a pair of right and left crawler traveling devices and configured to control the attitude of the body of the vehicle relative to the crawler traveling devices. The present invention relates to an attitude control device. 2. Description of the Related Art In a conventional combine, the entire left and right crawler traveling devices are configured to independently move up and down with respect to a body frame via a lifting link mechanism. In some cases, the crawler traveling device is moved up and down so as to maintain the lateral inclination angle of the traveling body at a predetermined inclination angle based on a detection result of inclination angle detection means for detecting a lateral inclination angle with respect to a surface (for example, JP 5
No. 9-38108). [0003] In the above-mentioned combine of the conventional structure, the whole crawler traveling device is raised and lowered, and the crawler traveling device and the like are fitted in local depressions such as ridges and grooves. In the case or when the field surface is inclined and one crawler traveling device travels on the muddy surface at a lower side of the inclined surface, control is performed to push down the one crawler traveling device and return the traveling aircraft to a horizontal state. It has been practiced to correct the bias of the machine weight. In the conventional configuration, the transmission structure becomes complicated, and the left and right inclination of the traveling body is controlled to a predetermined posture set in advance, that is, to maintain the body horizontally. When working on a computer, it was not possible to easily perform operations such as temporarily changing the left and right postures of the working device to avoid interference with other objects such as ridges. .
An object of the present invention is to easily avoid a decrease in the straightness of the body due to sinking of a crawler traveling device, and to diversify an operation mode of a working device during a traveling operation to perform a work in a state suitable for the operation with a simple operation. An object of the present invention is to provide a combine attitude control device capable of controlling the attitude of the apparatus. [0004] A characteristic configuration of a combine posture control device according to the present invention is a cutting pre-processing device,
A traveling body provided with a threshing device at the rear is supported by left and right traveling devices, and a driving wheel body attached to a body frame of the traveling body, and a supporting frame that moves up and down with respect to the body frame, a rear side of the driving wheel body. A crawler traveling device is constructed by winding a crawler belt over a group of idler wheels that are axially supported and positioned in the crawler traveling device. Automatic lifting and lowering means for independently driving each of the left and right support frames to raise and lower, and an automatic lifting and lowering control means for controlling the operation of the lifting and lowering means so that the left and right inclination of the body becomes a preset target angle; Target angle setting instruction means for artificially instructing the target angle to the automatic elevating control means. The operation of the above arrangement is as follows. That is, when one of the crawler traveling devices falls into the depression or the like, the automatic elevation control means operates the elevation drive means so as to maintain the left-right inclination angle of the traveling body at the original inclination angle.
As a result, the support frame is lowered with respect to the traveling body, preventing the traveling body from tilting and maintaining a horizontal posture. Since automatic elevation control means for controlling the horizontal inclination of the body to be a preset target angle is provided with target angle setting instruction means for artificially instructing a target angle, the target angle setting instruction means is provided. Thus, the harvesting operation can be performed by arbitrarily setting the horizontal inclination angle, the right inclination posture, and the left inclination posture, which is the target of the automatic control, to the horizontal posture, the right inclination posture, and the left inclination posture in accordance with the work conditions in various field conditions. Therefore, for example, in order to avoid contact with the ridge at the edge of the ridge, or when performing a reaping operation across both areas of the already-cut and un-cut lands with a reaper capable of multi-cutting, The work mode can be switched easily, for example, by tilting the reaper to avoid contact with the straw after threshing or to improve the picking of the lodging crop according to the state of the lodging crop. It can be carried out. The effects of the above configuration are as follows. That is, automatic control of the left and right inclination posture of the traveling aircraft
In addition to performing the control in accordance with a fixed control target, it is possible to artificially set an appropriate target angle according to various work conditions. Thus, for example, the thruster is tilted and the threshing device performs an improper threshing in a tilted state, or the thruster is tilted according to work conditions (the pre-cutting processing unit) to remove the straw from the threshed side after threshing. In order to avoid contact with the mowing pre-processing unit, select an angle in accordance with the field and work conditions, and adjust the work position in a horizontal or inclined position with respect to the ground to suit various field work conditions. And the applicability of the combine using the automatic lifting control means to the working mode can be improved. As shown in FIG. 11, a raising device 1, a cutting device 2 for cutting the cereal culm raised by the raising device 1, and a rear side for transporting the cut cereal culm toward a rear threshing device 3. A pre-cutting device 5 equipped with a transport device 4 is attached to a traveling machine body 7 equipped with a pair of right and left crawler traveling devices 6 and 6 so as to be vertically swingable around a horizontal support axis X by an elevating cylinder 8. Configure the combine. Next, the structure for attaching the left and right crawler traveling devices 6 and 6 to the traveling body 7 will be described. As shown in FIGS. 3 and 4, a horizontal frame 10 is connected to a lower part of a main frame 9 having a front-rear posture, which constitutes the traveling body 7, and left and right track frames (body frames) are connected by the horizontal frame 10.
11 and 11 are connected and fixed. A drive sprocket 12 and a tension sprocket 13 are attached and fixed to the front and rear ends of the track frames 11, 11, respectively. The track frame 11 is formed in a downward open channel shape, and a pair of front and rear support frames 15A and 15B pivotally supporting a plurality of idler wheels 14 are mounted in the open space so as to be movable up and down relatively. A large-diameter idler wheel 16 is supported on the track frame 11 at an intermediate position of the idler wheel group 14 so as to be vertically swingable. The front and rear support frames 15A and 15B respectively have front and rear bell cranks 17A and 17 pivotally supported by the track frame 11 so as to be vertically swingable.
B has one end attached thereto, the front and rear bell cranks 17A and 17B are connected by a connecting rod 18, and the other end of the rear bell crank 17B is connected to a rolling elevating cylinder 19 as an elevating drive means. , The front and rear support frames 15A, 15B are moved up and down by the same amount in the same direction. As shown in FIG. 3, a volley-type traveling device height sensor 20 for detecting the swinging amount of the rear bell crank 17B is provided at a connection portion between the rolling elevating cylinder 19 and the rear bell crank 17B. ing. The height sensor 20 is height detecting means for detecting the height of the traveling body 7 at the left and right portions.
Control device 2 provided with an automatic elevation control means
1, a volley-type left / right height setting device 22 on the hand side as command means for controlling the left / right inclination and the vehicle height.
22 so that the commanded height is 22
The relative height of A, 15B with respect to the track frames 11, 11 can be artificially changed as desired by the operator. In this case, the traveling machine body is inclined by the difference between the relative heights of the left and right traveling devices 6 and 6. When the automatic control mode is adopted, the gravity type inclination sensor 2 as an inclination angle detecting means for detecting the inclination of the traveling body 7 to the left and right.
3, the support frames 15A, 15A
The height of B is adjusted, and the right and left inclination angles of the traveling body 7 with respect to the horizontal reference plane (ground) are set to the automatic elevation control means of the control device 21. It is configured to maintain the value set by the inclination setting device 28 as the setting command means. In this case, the height of both crawler traveling devices 6 and 6 can be obtained by increasing or decreasing the target length to the average set value specified in the flowchart of FIG. A volume type lifting / lowering detecting sensor 24 is provided at a position of a pivot X of the mowing pre-processing device 5 to the traveling machine body 7.
Is provided so as to detect the amount of elevation of the pre-cutting device 5 with respect to the traveling machine body 7. The various sensors and control device 21, the control valve 29 for the rolling lifting cylinder 19, and the control valve 30 for the cutting pretreatment device lifting cylinder 8 are referred to as rolling and lifting control means 31. With reference to the above configuration, the elevation control of the crawler traveling device (support frame) will be described with reference to the flowcharts of FIGS. As shown in FIG. 3, the rolling lift cylinder 19 is provided with limit switches 25, 25 at the movable stroke ends. When the limit switch 25 is operated, an alarm lamp 26 is operated. The control flow first confirms that the alarm lamp 26 is not lit, and selects automatic / manual control.
First, the case of automatic control will be described. When the height of the pre-cutting device 5 based on the elevation detection sensor 24 is higher than a certain height during the cutting operation, and when the steering clutch for the left and right crawler traveling devices 6 and 6 is operated, the ridge ends. The target position of the left and right traveling device (definition is shown in the figure) is determined as an average set value, and the left and right crawler traveling devices 6 and 6 are set to a level parallel to the traveling body 7. I do. Further, it is determined that the vehicle is traveling on the road with the steering clutch disengaged, and the operation of the rolling elevating cylinder 19 is stopped. On the other hand, if the height of the pre-cutting device 5 is the height during work, the LED by the traveling device height sensor 20 is used.
It is confirmed whether or not the display device 27 of the formula is operating (Step I), and the target value shown in Step II is calculated. The illustrated combine angle α1 is an angle when the traveling devices 6 and 6 are already inclined with respect to the traveling machine body 7 at the start of the control. The angle α2 detected by the inclination sensor 23
And a set angle α3 with respect to the horizontal reference plane from the inclination setting device 28, a target angle α4 for operating the rolling elevating cylinder 19 is calculated, and the rolling elevating cylinder 1
The operation length (target length) of No. 9 is calculated (step II). When the target length is determined, it is determined whether or not it is possible to cover the maximum stroke (variable length) range of the rolling elevating cylinder 19, and if the target length is larger than the variable length, the variable length is set as the target length. The fact that the rolling up / down cylinder 19 is at the stroke end is indicated by the tilt angle alarm lamp 26 (step III). Next, + and-of the target angle are determined. “+” Indicates a case where the traveling body 7 is tilted rightward (not in a tilted state), and “−” indicates an opposite operation.
In the case of +, the target position of the left traveling device 6 is calculated. If the target position exceeds the stroke range of the left rolling elevating cylinder 19, the target position of the traveling device 6 is set to the maximum stroke position of the cylinder 19. (Upper limit position), and the target position of the right traveling device 6 is set to a position of a cylinder length shorter than the maximum stroke position by twice the target length. If the target position of the left traveling device 6 falls within the stroke of the rolling elevating cylinder 19, it is examined whether the target position of the right traveling device 6 falls within the stroke of the cylinder 19, and its lower limit position is considered. If it exceeds the (minimum stroke position), the target position of the right traveling device 6 is set to the minimum stroke position (lower limit position) of the cylinder 19, and the target position of the left traveling device 6 is twice the target length. The target position is set to a position with a cylinder length longer than the minimum stroke position. If the target angle α4 is-, the procedure opposite to that for + is performed (step I).
V). When the target positions of the left and right traveling devices 6 and 6 are determined as described above, the required operating length (corrected length) of the rolling cylinder 19 is determined from the position information from the traveling device height sensor 20, and the dead zone α is determined. In some cases, the operation of the rolling elevating cylinder 19 is stopped, and when it exceeds this, the rolling elevating cylinder 19 is operated by the correction length. Next, when the control is switched to the manual control by the changeover switch 32, the rolling elevating cylinders 19, 19 are adjusted to the commanded heights by the setting devices 22, 22, which set the relative height of the left and right traveling devices 6, 6 with respect to the body. Operation control. [Other Embodiments] As the lifting / lowering drive means of the crawler traveling device 6, a configuration in which a cylinder or a screw mechanism and an electric motor or the like are combined may be used. The combine may be of the whole culm type.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a control configuration diagram. FIG. 2 is a front view showing a panel on which various setting devices are arranged. FIG. 3 is a side view showing a vertical drive means of the traveling device. FIG. 5 is a flow chart, FIG. 6 is a flow chart, FIG. 8 is a flow chart, FIG. 9 is a flow chart, and FIG. FIG. 11: Overall side view [Description of reference numerals] 6 Traveling device 7 Traveling body 11 Track frame (body frame) 12 Drive wheel 14 Idling wheels 15A, 15B Support frame 19 Elevating drive means 21 control device (automatic raising / lowering control means) 23 inclination angle detecting means 28 target angle setting command means

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shigeo Sato 64 Ishizukita-cho, Sakai-shi, Osaka Kubota Sakai Works Co., Ltd. (56) References JP-A-59-2630 (JP, A) JP-A-59-630 38108 (JP, A) Fully open sho 59-26083 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B62D 55/116 A01D 67/00

Claims (1)

(57) [Claims] Traveling machine equipped with a pre-cutting device at the front and a threshing device at the rear
The body is supported by the left and right traveling devices, and is supported by a drive wheel attached to the body frame of the traveling body and a support frame that moves up and down with respect to the body frame so as to be positioned rearward of the drive wheel and pivotally supported. A crawler traveling device is formed by winding a crawler belt over a group of idler wheels, and the crawler traveling device is disposed on each of the left and right sides. an elevating drive means for independently vertically driving the respective support frame is provided, actuating the lateral inclination is preset of body of the lifting drive means
Automatic lifting / lowering control means for controlling the target angle
And manually instructs the automatic elevation control means to set the target angle
Of a combine having target angle setting command means
Attitude control device .