JPH0630631A - Reap-pretreating structure of combine harvester - Google Patents

Abstract

PURPOSE:To provide a combine harvester having excellent controllability and capable of developing optimum reaping state corresponding to the lodging state of planted culms. CONSTITUTION:A rotary reel 6 is supported at the upper front side of a reaping apparatus 7 placed at the front part of a machine body with a supporting arm 26 extended from the rear part of the machine body in a vertically shiftable state to enable the adjustment of the height of the rotary reel and the object culms to be reaped are scraped backward with the rotary reel. The rotary reel 6 is attached in a state freely movable in the machine direction relative to the supporting arm 26 and is controlled to be moved relatively backward according to the upward motion of the supporting arm 26 and forward by the lowering motion of the supporting arm 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine pre-mowing treatment structure having a rotating reel for scraping planted culms rearward.

[0002]

2. Description of the Related Art In the combine harvesting pretreatment structure described above, conventionally, as shown in, for example, Japanese Utility Model Application Laid-Open No. 2-131846, the rotary reel is supported by a swing end of a support arm so as to be slidable back and forth. There is a structure in which the support arm is configured to be driven up and down by a hydraulic cylinder, while the support arm is configured to be driven and slidable in the front-back direction with respect to the support arm. It was structured so that it could be switched using a manual operation tool that was placed in the department.

[0003]

According to the structure as described above, the rotary reel is set to a higher position on the upper side when the planted culm is in a substantially upright posture without much lodging, depending on the degree of lodging of the planted culm. Set and set the rotating reel to the rear side position close to the auger so that the auger deployed behind it can be scraped so that the grain culm can be leaned against and carried out effectively. , In the case of a grain stalk that has been severely lodged, lower the rotating reel to the lower position so as to engage with the lodge grain culvert in order to efficiently perform the raising action of the lodge grain cullet by the rotating reel, and to the auger. In order to favorably perform the leaning state, it is possible to slide the front side of the machine body so that a predetermined space can be maintained between the auger and the auger. However, according to the above-mentioned conventional structure, when all the culms have almost the same degree of lodging in the working field, the harmful effect does not occur so much. In the case where culms are mixed, the vertical position adjustment operation and the front-back position adjustment of the rotary reel as described above must be changed for each different grain culm state, and the operation is doubled. There was a drawback that the operation became troublesome. The present invention aims to eliminate the above-mentioned problems.

[0004]

According to a characteristic configuration of the first invention, a rotary reel for scraping the grain stalks to be reaped rearward is provided on the front upper side of the reaping device at the front of the machine body and extended from the rear side of the machine body. A supporting arm that is swingably movable up and down supports the rotating reel so that the vertical position of the rotating reel can be adjusted.
In addition, there is provided interlocking movement means for moving the rotary reel relatively rearward with the upward movement of the support arm and moving the rotary reel relatively forward with the downward movement of the support arm. is there. According to a characteristic configuration of the second aspect of the present invention, the rotation speed ratio of the rotary reel to the vehicle speed is operated to decrease with the upward movement of the support arm, and the rotation speed ratio is increased to increase with the downward movement of the support arm. It is provided with a reel rotation speed control means that is operated to.

[0005]

According to the characteristic construction of the first aspect of the present invention, when the felling state of the planted grain culm in the field is severe during the cutting operation, the support arm is manually swung downward so that the ground height of the rotating reel is increased. When changed to a lower position, the rotating reel automatically slides relative to the support arm toward the front of the machine, effectively raising the fallen grain culms and acting, and also with the transverse feed auger. A predetermined interval is formed between the two, and the grain culms after being raised can be leaned against the auger effectively. Also, when the planted culm is close to the upright posture, if the rotating reel is artificially set to the upper position where it effectively locks the tip side of the planted culm, it automatically leans against the auger. Automatically slides to the relative rear side position where is effectively performed. According to the characteristic configuration of the second invention,
In addition to the action of the first aspect of the invention, in the case of an upright grain culm, the rotation speed ratio of the rotating reels to the vehicle speed is automatically reduced, and the grain stalk is scraped and guided at a speed substantially in synchronization with the vehicle speed. In the case of grain culms that can be transported without clogging and are heavily lodged, the rotation speed of the rotating reel is automatically increased, and it is faster than the vehicle speed for grain buns that are lodged in a folded state. By rotating and locking, the number of culms in one pulling and locking action is reduced, and smooth pulling can be performed without tearing of the grain culms due to unreasonable pulling.

[0006]

[Effects of the Invention] Therefore, even in a field where grain culms in an almost upright posture and grain culls that are severely lodged alternately exist in the field, the aircraft operator is required to change each time according to the situation of the grain culm. By only lowering the machine's running speed and lowering the rotating reel, it is possible to constantly present an appropriate reaping processing state according to the degree of laying down. We have come to be able to provide a pre-mowing treatment structure.

[0007]

Embodiments will be described below with reference to the drawings. Figure 3
Shows the all culm input type combine. This combine is equipped with a threshing device 3 equipped with a handling barrel that rotates around a longitudinal axis on a machine body frame 2 equipped with a crawler traveling device 1, and at the front part of the machine body a cutting pretreatment device 4 by a hydraulic cylinder 5. It is configured so that it can be moved up and down around a horizontal axis X1. The cutting pretreatment device 4 is a take-up reel 6 (an example of a rotary reel) that guides the tip end side of the planted grain stalk to the rear side while rotating, cutting the root part of the planted grain culm as the machine runs. A harvesting device 7, a belt conveyor 8 for placing and transporting the harvested culms rearward, an auger 9 for collecting the harvested culms to the center side in the cutting width direction, and a whole amount of the grain culms collected in the center toward the threshing device 3. It is configured by including a narrow feed conveyor 10 or the like for scraping and conveying. With respect to the pre-mowing processing device 4, a lifting / lowering pivot X1
Power is supplied via the drive shaft 11 located at. That is, the feed shaft 10 is driven by the drive shaft 11, and power is supplied to the mowing pretreatment device side input shaft 13 via the transmission belt 12, and the auger 9 is supplied from the input shaft 13 via the first drive chain 14.
In addition, the transmission system is configured to drive the belt conveyor 8, supply power to the input shaft 17 of the belt continuously variable transmission 16 via the second drive chain 15, and drive the harvesting device 7 via the transmission belt 18. The output of the belt continuously variable transmission 16 is transmitted to the take-in reel 6 via the transmission chain 19 and the transmission belt 20. As shown in FIG. 2, the belt continuously variable transmission 16 is provided with the pulleys 2
1 and 22 are respectively configured as split pulleys, and the movable pulley bodies 21a and 22a located on the opposite side are provided with the operation rod 2
The operation rod 2 is configured so as to be integrally slid through 3 to change the belt winding diameters of the belts and to perform gear shifting operation.
Reference numeral 3 is configured to be slidably driven by the first electric cylinder 24. As shown in FIG. 1, the take-in reel 6
Is supported on the swing end side of a support arm 26 that is swingably supported about a horizontal axis X2 with respect to the support frame 25, and is driven by a hydraulic cylinder 27 connected to an intermediate portion of the support arm 26. A support member 28 that is configured to move up and down and that supports the support shaft of the take-in reel 6 is externally fitted to the support arm 26 so as to be slidable in the front-rear direction, and a link mechanism 30 is driven by a second electric cylinder 29. The supporting member 28 is slidably driven back and forth through the so that the front and rear positions can be changed. The operation of the hydraulic cylinder 27 for raising and lowering is configured to expand and contract based on the operation of an operation lever (not shown) provided in the machine control section. Then, the supporting arm 26 by the lifting operation of the lifting hydraulic cylinder 27.
Interlocking movement means A for moving the take-up reel 6 relatively rearward as the support arm 26 moves downward and moving the take-up reel 6 relatively forward as the support arm 26 moves downward.
And the take-up reel 6 as the support arm 26 moves upward.
And a reel rotation speed control means B for operating the rotation speed ratio with respect to the vehicle speed to the decrease side and operating the rotation speed ratio to the increase side with the downward movement of the support arm 26.
More specifically, a potentiometer PM for detecting the amount of vertical swing is arranged at the lift fulcrum portion of the support arm 26 to detect the height of the take-in reel 6, and the first and second electric cylinders 24, 29 respectively. Stroke sensors S1 and S2 for detecting and feeding back the actual operation amount are arranged in the vicinity of, and as shown in FIG. 4, these outputs are input to a control device 31 equipped with a microcomputer.
1, the electric cylinders 24 and 29 are driven and controlled. Each of the interlocking movement means A and the reel rotation speed control means B is provided in the control device 31 in the form of a control program, and the control device 31 controls as follows. In other words, the height of the take-in reel 6 is determined from the output of the potentiometer PM as the hydraulic cylinder 27 is moved up and down, and when the position is changed to the upper side, the first electric cylinder 24 is moved.
While controlling the belt continuously variable transmission 16 to the deceleration side while detecting the actual operation amount by the output of the stroke sensor S1, the second electric cylinder 29 is driven while detecting the actual operation amount by the output of the stroke sensor S2. And the take-in reel 6 is moved forward. Further, when the take-up reel 6 is changed in position to the lower side, the belt continuously variable transmission 16 is similarly switched to the speed increasing side, and the take-up reel 6 is moved rearward. The speed change ratio of the belt continuously variable transmission 16 is set to be a value which is about 1.5 to 2.5 times the vehicle speed.

Incidentally, as shown in FIG.
The second cutting blade 32 is attached to the lower side of the above so as to be able to swing up and down relatively, and only a part of the tip side of the planted culm is cut by the reaping device 7, and the remaining culm is cut down by the second cutting blade 32. When taking a working form, the automatic control operation as described above is restrained, and at such a high cutting, the take-up reel 6 is positioned at the rear side even if the take-up reel 6 is always lowered relatively, and the vehicle speed specific speed is increased. Is switched to a state of maintaining a set value close to the minimum speed.

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

[Brief description of drawings]

FIG. 1 is a side view of a pre-cutting processing unit.

FIG. 2 is a cutaway front view showing a transmission system.

[Fig. 3] Overall side view of the combine

FIG. 4 is a control block diagram.

FIG. 5 is a side view of the pre-cutting processing unit when the second cutting blade is attached.

[Explanation of symbols]

 6 Revolving reel 7 Mowing device 26 Support arm A Interlocking moving means B Reel rotation speed control means

Claims (2)

[Claims] 1. A rotary reel (6) for scraping the grain stalks to be cut backward on the front upper side of the reaping device (7) at the front of the machine body.
It is supported by a support arm (26) extending from the rear side of the machine body and capable of swinging up and down, and adjustable in vertical position,
The rotary reel (6) is attached to the support arm (26) so as to be positionally adjustable in the front-rear direction, and the rotary reel (6) is moved along with the upward movement of the support arm (26).
The support arm (26)
Combine harvesting pretreatment structure including interlocking moving means (A) for relatively moving the rotary reel (6) forward with the downward movement of the combine. 2. The rotation speed ratio of the rotation reel (6) to the vehicle speed is decreased in accordance with the upward movement of the support arm (26), and the rotation is performed in accordance with the downward movement of the support arm (26). 2. The combine harvesting pretreatment structure according to claim 1, further comprising reel rotation speed control means (B) for operating the speed ratio to increase.