JPH0463649B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a raking device for raking planted grain culms, a reaping device for reaping raked grain culms, and a method for transversely feeding and merging the harvested grain culms to the middle part of the cutting width. The pre-harvesting head section is equipped with a pre-processing head section that is equipped with a merging device for merging grains, and a feed case that is equipped with a rear conveyance device that transports the harvested grain culms inherited from the merging device toward the threshing device. This invention relates to a full-culm input type combine harvester that is attached to a traveling machine body via its end so as to be able to swing up and down.

[Conventional technology]

In a full-culm loading type combine harvester with the above configuration, if one of the left and right running devices falls into the furrow during wheat cutting, the machine body tilts to the left and right, and the attitude of the reaping device tilts with respect to the ground. Since there is a risk that the left and right ends of the reaping device may sink into the ground, it is recommended that at least the pretreatment head be configured to be able to roll freely relative to the machine body to maintain the predetermined reaping position. It was configured to allow rolling control. In particular, such a rolling control mechanism is essential for those having a horizontally long reaping device equipped with the above-mentioned merging device.

[Problems to be solved by the invention] However, in these cases, it is common to use gravity-type tilt sensors as a means of determining the state in which the aircraft is tilted from the horizontal reference plane. However, when installed on the side of the aircraft to determine the inclination of the aircraft, it had the drawback of easily causing malfunctions. In other words, if we assume that the gravity sensor uses a weight, etc., the pivot axis of the weight is along the longitudinal direction of the aircraft, but the aircraft is tilted not only in the left-right direction but also in the longitudinal direction. Therefore, if the inclination in the front-rear direction is large, the direction of the load applied to the weight may change, and the weight may not operate smoothly.

Therefore, since the weight lacked smoothness, its rocking in the left-right direction also lacked smoothness, and the detection of the left-right tilt of the aircraft was not accurate.

SUMMARY OF THE INVENTION An object of the present invention is to provide a tilt sensor arrangement that is independent of the direction of tilt of the aircraft body.

[Means for solving problems]

The characteristic configuration according to the present invention is that the preprocessing head part is pivotally supported to the feed case so that it can be driven in a rolling manner, and the preprocessing head part is set to a horizontal reference based on the detection result of a gravity-type left/right tilt detection sensor provided on the feed case. It is provided with rolling control means for maintaining a predetermined attitude with respect to the line,
Its effects are as follows.

[Effect]

In other words, by limiting the rolling motion relative to the machine body to the pre-processing head, the pre-processing head can follow even if the machine tilts from side to side. can be avoided. Furthermore, since the gravity-type tilt sensor is installed in the feed case, the feed case tilts in the same way as the aircraft when it tilts from side to side. Since it swings up and down with the processing head relative to the machine body, there is little change in attitude with respect to the ground, and even if the machine body tilts in the front-back direction, the sensor's operating axis will hardly tilt in the front-back direction of the machine. .

〔Effect of the invention〕

As a result, the operation of the gravity sensor becomes stable, the accuracy of rolling control can be increased, and the cutting height can be set to a desired value.

〔Example〕

As shown in Fig. 6, a reel-type raking device 1 for raking the planted grain culms, a reaping device 2 for reaping the raked grain culms, a belt-type conveying device 3 for conveying the harvested grain culms backward, and a conveyor. A pre-processing head section 5 is equipped with an auger-type merging device 4 that cross-feeds the harvested grain culms to the middle part of the cutting width and merges them, and a pre-processing head section 5 that directs the harvested grain culms inherited from the merging device 4 toward a machine-side threshing device 6. A reaping pre-processing section 9 consisting of a feed case 8 in which a rotary endless rear conveyance device 7 for conveyance is installed is connected to the feed case 8.
It is attached to the traveling machine body 10 via the base end thereof so that it can be driven vertically by a first hydraulic cylinder 11, and constitutes a full culm input type combine harvester.

The outlet 5A corresponding to the merging device 4 is located at a position eccentric from the width center of the preprocessing head section 5 in plan view, and correspondingly, the merging device 4 collects the harvested grain culm at a position corresponding to the outlet 5A. For this reason, it has a spiral feed dog 4A that is inclined in opposite left and right directions. The rear conveying device 7, which receives the conveyed grain culms from the merging device 4, has a pair of left and right chains 14A, 14B stretched between a pair of front and rear transmission shafts 12, 13, and is placed along the chains 14A, 14B in the width direction. A plurality of conveyance claws 15 are provided in the feeding direction, and the grain culm is conveyed to the threshing device 6.

Next, rolling drive control of the preprocessing head section 5 will be explained.

As shown in FIG. 2, a flange frame 17 having an angled cross section is fixed to the lower surface of the preprocessing head 5, and the flange frame 17 is rolled at the center position in the width direction of the opening of the preprocessing head 5. A fulcrum shaft 18 is fixed. On the other hand, a reinforcing frame 19 having a channel-shaped cross section is fixed to the lower surface of the inlet 8A on the side of the feed case 8 facing the opening of the pre-processing head 5, and the rolling fulcrum shaft 1 is mounted within this reinforcing frame 19.
A fulcrum boss 20 is attached to the fulcrum boss 20 which is fitted onto the outside of the holder 8 so as to be relatively swingable. Therefore, the fulcrum boss 20
is externally fitted onto the rolling fulcrum shaft 18, and the outlet 5A of the pretreatment head 5 and the inlet 8 of the feed case 8 are connected to each other.
A and A are closely opposed to each other, and the pretreatment head 5 can be rolled around the rolling fulcrum axis with respect to the feed case 8.

On the other hand, the mounting structure of the second hydraulic cylinder 21 for rollingly driving the preprocessing head 5 is such that a bracket 22 provided with a mounting bracket 22A for mounting and supporting the piston rod 21A of the second hydraulic cylinder 21 is attached to the upper surface of the preprocessing head 5. A proximal end bracket 23 extends from the reinforcing frame 19 and supports the proximal end of the cylinder case 21B. Then, a gravity-type tilt sensor 26 that uses the movement of a weight is attached to the top surface of the feed case 8, and the detection result of this tilt sensor 26 is taken out by a detection mechanism such as a potentiometer. 32, the hydraulic valve 28 is controlled via the control device 27 as a rolling control means, and the hydraulic valve 28 controls the second hydraulic cylinder 2.
1 to maintain the preprocessing head section 5 in a predetermined posture with respect to the horizontal reference line.

A manual control valve 29 is provided for the first hydraulic cylinder 11, and the operator switches the control valve 29 based on visual judgment to vertically swing the reaping preprocessing section 9 to control the ground surface of the reaping preprocessing section 9. I try to keep my posture as constant as possible.

In the figure, reference numeral 24 is a resin plate attached to the inlet 8A surface of the feed case 8, and has a sliding mechanism for smoothly rolling the pretreatment head 5. Further, numeral 30 is a guide for guiding the rolling operation of the pretreatment head section 5, and extends from the pretreatment head section 5. Reference numeral 31 in the figure is a long hole provided in the inlet flange of the feed case 8, and a mounting bolt 32 from the pre-processing head section 5 is inserted.
The pretreatment head section 5 is configured to allow rolling operation with respect to the feed case 8 even when the feed case 8 is inserted into the feed case 8. Further, reference numeral 25 in the figure is a guide mechanism provided on the inner bottom surface of the opening of the outlet 5A of the pretreatment head section 5, and is
The rectangular outlet 5A of the feed case 8 and the rectangular inlet 8A of the feed case 8 have an auxiliary function that works to smoothly feed the grain culms by compensating for the opening deviation caused by the rolling operation.

[Another example]

○B The above-mentioned tilt detection sensor 26 is not limited to one using a weight and a potentiometer.
A float may be provided on the U-shaped tube and the vertical movement of the float may be detected, and any form may be used as long as it utilizes gravity.

(B) If the angle detected by the inclination sensor 26 exceeds a set value, there is a risk that the traveling body 10 will tilt, so a lamp, buzzer, etc. may be used to notify the user.

[Brief explanation of the drawing]

The drawings show an embodiment of the full-culm input type combine harvester according to the present invention, and Fig. 1 is a side view showing the installation state of the second hydraulic cylinder for rolling, and Fig. 2 shows the connection structure between the pretreatment head and the feed case. 3 is a longitudinal sectional rear view showing the pretreatment head outlet and the feed case inlet, and FIG. 4 is the 1st,
A control system diagram for the second hydraulic cylinder, FIG. 5 is a cross-sectional plan view showing how the pre-processing head section and the feed case are attached, and FIG. 6 is a side view of the reaping pre-processing section. 1... raking device, 2... reaping device, 4... merging device, 5... pretreatment head section, 6... threshing device, 7... rear conveyance device, 8... feed case, 9... before reaping Processing unit, 26... Tilt detection sensor.

Claims (1)

[Claims] 1. A pretreatment head section 5 equipped with a raking device 1 for raking the planted grain culms, a reaping device 2 for reaping the raked grain culms, and a merging device 4 for traversely feeding and merging the harvested grain culms into the middle part of the cutting width; A pre-harvesting processing section 9 consisting of a feed case 8 equipped with a rear conveyance device 7 for conveying the harvested grain culms inherited from the merging device 4 toward the threshing device 6;
is a full culm input type combine harvester which is attached to the direction machine 10 via the base end of the feed case 8 so as to be able to swing vertically, and the preprocessing head section 5 is pivotally supported to the feed case 8 so as to be able to be driven in a rolling manner. At the same time, the entire culm feeding system is equipped with a rolling control means that maintains the preprocessing head section 5 in a predetermined posture with respect to the horizontal reference line based on the detection result of the gravity-type left and right tilt detection sensor 26 provided in the feed case 8. Type combine.