JPH0142436Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, it has been known to provide a pulling weeding body along the outside of a grain culm pulling device from the front side of the cutting blade in order to raise and weed the fallen grain culm in a harvester. ing.

However, the weeding claws of the pulling weed cutting body always stand up and protrude during the rising process, so when reaping the planted grain culm that has stood up in an orderly manner, the weeding claws that rise and rise will actually get in the way and prevent grain shedding. Occurred.

Therefore, in order to improve the above-mentioned drawbacks, proposals have been made to cover the weeding claws that rise and rise with a cover, and to interpose a clutch in the transmission path leading to the lifting weed cutting body to stop the weeding claws when reaping the erected grain culm. However, the former is disadvantageous in that it is difficult to attach and remove the cover and to carry it as a spare part, and in the latter, the weeding claws that remain upright even when the clutch is cut and operated pose an obstacle to raising the grain culm. There were drawbacks such as:

The purpose of the present invention is to improve the above-mentioned drawbacks, and the present invention is to provide a grain culm pulling device at the front part of the cutting blade, provide a grass cutting body on at least both sides of the front part, and provide a grass cutting body at the rear of the grass cutting body. In the harvesting machine, a vertically hanging type of pulling weeding body is provided along the grain culm pulling device,
Sprockets are pivotally supported on the upper and lower parts of the lifting weed cutting body by horizontal shafts, and a chain in which a large number of weed cutting claws are attached in a freely undulating manner is installed on these sprockets, and a chain is provided along the rear surface of the raising side of the chain. A guide rail for raising the weeding claw is provided, and the guide rail is attached to a case so as to be adjustable in forward and backward directions to guide the weeding claw to a raised position and a laid down non-raised position, A clutch interposed in the power transmission path of the weeding body and the guide rail are connected. When the clutch is engaged and operated, the guide rail guides the weeding claw to a standing position. When the clutch is disengaged and activated, the guide rail guides the weeding claw to the upright position. It is characterized by being interlocked so as to guide it in a prone position.

The embodiments shown in the drawings will be explained below.
Reference numeral 1 denotes a threshing device mounted on one side of a combine table having a traveling device, and the other side of the machine table is provided with an operation panel 2, a driver's seat, a grain tank 3, etc. in order from the front. At the front of the threshing device 1, there is a reaping device 7 comprising a cutting blade 4, a pair of right and left grain culm pulling bodies 5, 5, and cutting bodies 6, 6 provided on both sides of the lower part of the grain culm pulling bodies 5, 5. and a grain culm conveying device 8 that lifts the harvested grain culm rearward and supplies it to the threshing device 1 are installed so as to be vertically adjustable.

Further, at the rear of the small grass divider 6 on the unmown side, a driving sprocket 10a at the upper part of the case 9 and an idler roll 10b at the lower part are pivotally supported by horizontal shafts 11a, 11b, and these driving sprockets 10a,
Floating roll 10b and intermediate floating sprocket 1
2, a pulling weeding body 15 formed by adjusting a chain 14 to which a large number of weeding claws 13 are attached in a freely undulating manner;
is attached so as to be tilted backward so as to follow the side of the grain culm pulling body 5.

A guide rail 16 is provided between the lower floating roll 10b and the intermediate floating sprocket 12, and the guide rail 16 slides into contact with the base of the weeding claw 13 to make the weeding claw 13 stand up. The screw rods 18, 18 are fastened to a pair of upper and lower elongated holes 17, 17 drilled in the screw rod 1.
Loosen the bolts 19 and 19 of 8 and 18, and remove the grips 2 on both sides.
0 and 20 and push it forward as shown in FIG. 4 and tighten it, the guide rail 16 comes into sliding contact with the back of the chain 14 as shown by the chain line in FIG. 3, and this causes the weeding claws 13... The weeding claw 13 rises in a standing position, and when it is retracted and tightened as shown in Fig. 5, the weeding claw 13 rises once at the lower opening as shown by the solid line in Fig. 3, but immediately rotates downward and collapses. Rise with posture.

Reference numeral 21 denotes a holding cylinder which is horizontally suspended between the back surfaces of the grain culm pulling bodies 5, 5 and has a drive shaft 22 therein, and its both ends are connected to transmission cases attached to the back surfaces of the left and right grain culm pulling bodies 5, 5. The transmission case 23 on the uncut side connects the longitudinal shaft 25 to which the drive sprocket 24 of the grass pulling body 15 on that side is fixed and the horizontal shaft 11a at the upper part of the grass pulling body 15 via a bearing. The drive shaft 22 and the horizontal shaft 1
1a is interrupted by a clutch 26 having a circumferential groove.

Further, the lever 28 of the shifter 27 that engages with the circumferential groove of the clutch 26 is connected to one end of a bell crank 30 pivotally supported on the shaft 29 of the floating sprocket 12 via a connecting rod 31. The elongated hole 30a at the end fits into the end of the screw rod 18 to which the grip rod 20 is attached, so that the weeding claws 13...
When the guide rail 16 is pushed forward (in the direction of arrow a in Fig. 7) using the grip 20 in order to raise it in a standing position, the bell crank 30 and the lever 28 rotate clockwise, the clutch 26 is engaged, and the guide rail 16 is pushed forward (in the direction of arrow a in Fig. 7). When the grip lever 20 is moved backward (in the direction of arrow b) to move the rail 16 backward, the bell crank 30 and lever 28 are rotated counterclockwise and the clutch 26 is disengaged. That is, the movement of the guide rail 16 and the clutch 2
6 intermittents are linked.

In the above-mentioned apparatus, when harvesting and threshing a fallen grain culm, the guide rail 16 is pushed forward and set. Then, the clutch 26 engages and the dividing claw 13
. . . stands up at the lower end turning part and is guided by the guide rail 16 in the upward stroke to pull up the lodging grain culm while weeding, and the grain culm that has entered between the weeding bodies 6 and 6 is weeded. It is caused by bodies 5,5. During this time, no matter which direction the grain culms are lying down, they are raised up and weeded in an orderly manner.

Further, the raised grain culm is cut by the cutting blade 4 and then supplied to the threshing device 1 by the grain culm conveying device 8, where it is threshed.

Next, when reaping and threshing the standing grain culms, the guide rail 16 is moved back and the weeding claws 13...
Clutch 26 broke as it fell down, and parting claw 1
3... and the chain 14 stops, and the dividing claw 13...
There is no problem with the grain culm.

The example shown in FIG. 8 is intended to further improve the effect of raising and weeding the lodging grain culm, and the guide rail 1
There are multiple recesses 16 near the bottom of 6 or above it.
a... is provided, and in the process of raising the weeding claws 13..., the base thereof enters and exits the recess 16a, thereby causing the weeding claws 13... to reciprocate up and down, thereby preventing tangles. It is possible to loosen grain culms that have been laid down and prevent ear breakage and grain shedding during the weeding and shedding process.

When the swing position immediately after the weeding claw 13 rotates, that is, the position of the recess 16a, coincides with the position where the next weeding claw 13 is swung out from the immediately preceding weeding body 6, the load increases and is transmitted. Since the system will be overloaded, the above-mentioned swinging should be completed before the next weeding claw 13 comes out of the weeding body 6.

9 and 10 show an example in which a scrap removal device is provided on the upper part of the pulling weeding member 15, an idler wheel 31 is pivotally supported between the drive sprocket 10a and the idler sprocket 12, and a cutout window 32 is provided on the front surface of the case 9. The front surface of the cutout window 32 is covered with a cover 33 having a U-shaped cross section, and a guide plate 34 having an arcuate shape when viewed from the front is protruded from the upper part.

The weeding claws 13 move around while contacting the field surface at the lower end and scoop up the fallen grain culms, so as shown in the figure, the tips of the weeding claws 13 have soil attached to them, and as they rise, The weeding claw 13 once lies down at the floating sprocket 12 and rises, and when it reaches the idler wheel 31, its base slides into contact with the circumferential surface of the idler wheel 31 and quickly rises, so that the tip of the weeding claw 13 The soil and straw debris adhering to the guide plate 34 are thrown out, and as shown in FIG.
As shown in the figure, it disperses to the left and right and falls outside the case 9.

11 to 13 show an example in which the waste discharge port 35 is provided on the lower back side of the case 9, and the support shaft 35 is provided inside the case 9.
6, the upper part of the jumping plate 37 is rotatably suspended, and the jumping plate 37 is supported by the rod 38 and the receiving plate 39.
It is urged upward by the stopper 41 and is normally held in the position shown by the solid line in FIG. 11.

Then, the weeding claw 13 descends while sliding its tip against the inner circumferential surface of the case 9, and before the tip reaches the waste discharge port 35, the base portion is moved to the jumping plate 3.
7 to rotate it downward, and at the same time, the ammunition 4
0 is compressed, and in this state, when the tip of the weeding claw 13 comes off the rim of the waste outlet 35, the weeding claw 13 rapidly rotates all at once, thereby removing the straw and soil attached to the weeding claw 13. The waste is thrown out of the case 9 from the waste outlet 35.

Further, as shown in FIGS. 14 to 16, the driving device for the cutting blade 4 has a support shaft 44 integral with a sun gear 43 fixed to a transmission case 42 with a screw, and a rotating arm into which the support shaft 44 is loosely fitted. The boss portion 45a of 45 is rotatably supported on the transmission case 42 by bearings 46, 46, and the input gear 47 is spline-fitted to the boss portion of the swing arm 45 so as to rotate together. A planetary gear 48 meshing with the sun gear 43 is rotatably supported by a shaft 49, and a bell crank 50 connected to the movable blade of the cutting blade 4 is connected to a ring ball on a pin 51 protruding from the protruding position of the planetary gear 48. 52, 52 and rod 53 are interlockingly connected.

When the input gear 47 rotates, the swing arm 45 rotates integrally, and the planetary gear 48 revolves around the sun gear 43 while rotating. Therefore, the rotation locus of the pin 51 that drives the cutting blade 4 draws a cycloid curve S as shown in FIG. 15, and as a result, the cutting blade 4 moves toward the grain culm as shown in FIG. In the process of cutting, the speed becomes almost constant,
The reciprocating direction change time is shortened, and like a conventional mower blade that is driven by a simple crank motion and cuts in a sine curve, only the middle part of the cutting stroke is at its highest speed, and the parts before and after that are at low speeds. Therefore, stable harvesting can be performed, and the grain culm is not pushed down due to the reduction in the cutting speed.

As described above, the present invention provides a grain culm pulling device at the front part of the cutting blade, a grass cutting body on at least both sides of the front part, and a grass cutting body that extends from the rear of the grass cutting body along the sides of the grain culm pulling device. In a harvesting machine equipped with a vertically hung-type pulling weed divider, rollers are pivotally supported on horizontal shafts at the upper and lower parts of the puller weed divider, and a large number of weed dividers are attached to these wheels in a freely undulating manner. A chain is stretched, a guide rail is provided along the rear surface of the ascending side of the chain for raising the weeding claw, and the guide rail is attached to a case so as to be adjustable in forward and backward movement, and the raising position in which the weeding claw is erected is achieved. A clutch is configured to guide the weeding claws to a laid down, non-raised position, and is interposed in the transmission system of the pulling weeding part, and the guide rail. When the clutch is engaged and operated, the guide rail guides the weeding claws to the upright position. When the clutch is cut and activated, the guide rails are linked to guide the weeding claws in a laid down position.When the clutch is cut to reap the erected grain culms, the guide rails are linked to guide the weeding claws in a laid down position. The guide rail automatically switches to a non-working position in which the weeding claws are laid down, and with a simple operation, the mowing work can be carried out immediately while preventing grain shedding.

In addition, when reaping grain culms that have fallen down, when the clutch of the pulling transmission system is engaged and operated, the guide rail of the pulling weeding body automatically moves to the pulling action position with the weeding claws upright. It is possible to very easily and quickly start raising and weeding the lodging grain culms without switching or requiring troublesome switching adjustment operations.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a perspective view of the front part of the combine harvester, FIG. 2 is a side view showing the inside of the pulling weeding body, and FIG. 4 and 5 are cross-sectional views of the upper mounting portion of the guide rail, FIG. 6 is a cross-sectional view of the interlocking device between the guide rail and the clutch portion, FIG. 7 is a perspective view of the link mechanism of the interlocking device, and FIG. Fig. 8 is a side view of the main part of an example in which the weeding claw is oscillated, Fig. 9 is a side view of the waste discharge port device of the pulling weeding part, Fig. 10 is a front view of the same as above, and Fig. 1
Figure 1 is a side view of another example of the same device, and Figure 12 is a side view of another example of the same device.
Figure 1 is a view in the direction of arrow A, Figure 13 is a rear view of the same as above, Figure 14 is a rear view of the same as above.
The figure is a plan view showing a partial cross section of the cutting blade and its driving part, FIG. 15 is a side view of the same driving part, and FIG. 16 is a diagram showing the operating speed of the cutting blade. 4... Cutting blade, 5... Grain culm pulling body, 6... Grass cutting body, 9... Case, 13... Grass cutting claw, 14... Chain, 15...... Grass pulling body pulling body, 16... Guide rail, 17... Long hole, 20... Grip.

Claims (1)

[Scope of utility model registration request] A grain culm pulling device is provided in the front part of the cutting blade, a grass cutting body is provided on at least both sides of the front part, and a vertically hanging type pulling grass cutting body is provided from the rear of the grass cutting body along the side of the grain culm pulling device. In the harvester installed, wheels are supported horizontally on the upper and lower parts of the pulling weed cutting body, and a chain on which a large number of weed cutting claws are attached in a freely undulating manner is stretched over these wheels. A guide rail for raising the weeding claw is provided along the rear surface on the rising side of the blade, and the guide rail is attached to the case so as to be adjustable in advance and retreat, and guides the weeding claw to an upright raised position and a laid down non-raised position. a clutch interposed in the transmission system of the pulling weed cutting body and the guide rail; when the clutch is engaged and operated, the guide rail guides the grass cutting claw in an upright position, and the clutch is disengaged and operated. A weed cutting device for a harvester, characterized in that a guide rail and a guide rail are interlocked to guide a weed cutting claw in a laid down position.