JPH0445469Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, in a combine harvester in which a grain culm transport device that tilts vertically around the rear part of the threshing device is installed at the front part of the threshing device, the ear side transport body of the grain culm transport device has a chain with a transport claw from the starting end to the terminal end. Until now, the grain culms were stored in a substantially rectangular chain case, so when the grain culms transported by the grain culm conveying device were fed to the threshing device, the grain culms rode on the rear upper corner of the chain case as shown in Figure 6. As a result, the grain becomes extremely unstable, its movement is obstructed, and the posture of the grain culm becomes disordered. Furthermore, the distance between the corner and the threshing device becomes narrow during shallow handling adjustment, and the supply of ears to the supply port becomes unsmooth. There was a drawback.

The present invention aims to improve the above-mentioned drawbacks, and a pre-processing device consisting of a reaping device and a grain culm conveying device is attached to the front part of the threshing device mounted on the machine base, and the above-mentioned grain In a combine harvester in which the culm conveying device is constituted by a stock head conveying body and a ear side conveying body, and is pivotally supported so as to be vertically tilted around the vicinity of the front part of the supply port of the threshing device in order to adjust the handling depth, the said ear side conveying body The chain is composed of a chain to which a large number of conveyor claws are pivotally mounted so that they can be raised and lowered, and a chain case that houses the chain. It is characterized by being formed into a gentle slope that extends rearward and covers the vicinity of the front end of the conveyance claw.

The embodiments shown in the drawings will be explained below.
Reference numeral 1 denotes a threshing device mounted on one side of a machine base 3 having a traveling device 2, and on the other side, from the front, there is an operation panel, a driver's seat, a grain tank, and a paddy packing section consisting of a bag hanging rod. etc., and a pre-processing device consisting of a reaping device A and a grain culm conveying device B is provided in front, and the reaping device A has a cutting blade 4, a grain culm pulling body 5...
and a grain culm raking device 6 in which a lug belt 6b is stretched over the top of a raking wheel 6a, and the grain culm transport device B is a stock transporter having a transport chain 7 and a clamping rail 7a facing each other. 8, and a panicle-side conveying body 12, which houses a chain 9 in which a large number of conveying claws 9a are pivotally connected in a vertically movable manner in a chain case 10, and has guide rods 11 arranged opposite to each other.

Further, the frame 13 of the reaping device A is the threshing device 1
It is tilted up and down by a hydraulic cylinder 16 about a horizontal shaft 15 installed just below the front end of the entrance plate 14 of the
A drive shaft 17 supports the rear part of the grain culm conveying device B.
The transmission case 18 is also rotatably supported by the horizontal shaft 15, and can be tilted up and down by a handling depth adjustment lever 19 provided on the side of the cockpit.

Further, the chain 9 of the ear side conveyor 12 is stretched between a drive sprocket 20 attached to the drive shaft 17 and an idler wheel 21 pivotally supported on the front part of the chain case 10, and a chain 9 is provided on the guide rod 11 side. A rail 22 from which the transport claw 9a stands and projects is fixed.

The rear part of the chain case 10 is formed into a gentle slope C by bending the upper plate and the lower plate into a tapered shape so that they approach the conveying claw 9a sequentially as shown in FIG. As shown in FIG. 3, on the top surface of the seat 10, there is attached a seat guide plate 23 which has a tapered shape that extends to the upper part of the driver's seat side when viewed from the front and narrows at the top when viewed from the side.

Reference numeral 24 denotes a partition plate extending forward from the side wall of the threshing device 1, to which a lever panel for guiding the handling depth adjustment lever 19 and other levers is connected.

In the above-mentioned combine harvester, the grain stalks that have been harvested by the reaping device A and handed over to the grain culm conveying device B are transported rearward by the stalk-side conveyor 8, and the stalk side is conveyed backward by the stalk-side conveyor 12. While being loosely held between the guide rod 11 and the case 10, it is lifted rearward by the rotation of the conveyance claw 9a as the chain 9 rotates.

At that time, if the grain culm is a short culm, the grain culm conveying device B is tilted downward by operating the handling depth adjustment lever 19 as shown by the solid line in FIG. Tilt upward to adjust shallow handling.

The lifted grain culm is laid down diagonally toward the driver's seat side, and its stock part is transferred to the starting end of the feed chain 1a and the pinch rail 1b of the threshing device 1, and is placed on the ear side. is transferred from the terminal end of the panicle side conveyor 12 onto the inlet plate 14 and is supplied to the supply port 14a.

At that time, if the grain culm is a short culm, the canopy guide plate 2
3 and the chain case 10 have been deeply adjusted so that their rear parts are in an inclined position as shown by solid lines in FIGS. Therefore, it slides down smoothly without causing any obstruction, and it is possible to prevent the culm posture from being disturbed and the tip from falling behind.

Furthermore, when the long culm is adjusted for shallow handling, the cane guide plate 23 and the rear part of the chain case 10 come very close to the front of the threshing device 1 as shown by the chain line in FIG. The top surface is a gentle slope C
As a result, the distance between the rear upper end of the chain case 10 and the threshing device 1 is L, whereas the conventional one is L, as shown in FIG.
The movement route of the grain stalk is expanded as the grain grows.
This is combined with the fact that the conveying claw 9a transfers the grain side of the grain culm in a sideways direction at the beginning of the rotation, so that the grain part rapidly slides down in an orderly manner and gets caught on the rear end corner of the chain case 10 and receives resistance. Supply port 14 smoothly without any
can be supplied to a.

As mentioned above, in the present invention, a pre-processing device consisting of a reaping device and a grain culm conveying device is attached to the front part of a threshing device mounted on a machine base, and the grain culm conveying device is connected to a stock base conveying body and a ear side conveying body. In the cobine, the cobine is pivoted to tilt vertically around the front part of the supply port of the threshing device in order to adjust the handling depth, and the ear-side conveying body is pivoted so that the cobine can be raised with a large number of conveying pawls. The upper part of the rear end of the chain case is extended rearward from the sloping lower edge of the canopy guide plate attached to the upper surface of the chain, and the upper part of the chain case is arranged in the vicinity of the front end of the conveyor claw. Since it is formed on a gently sloped surface that covers the entire length of the chain, the conveying claws that have completed their conveying action can be covered by the upper rear end of the chain case, preventing grain culms from being carried around into the case, and maintaining smooth and long-term conveying performance. is possible.

Moreover, when the handling depth is adjusted by tilting the grain culm conveying device downward relative to the short culm, the chain case of the ear side conveying body assumes a steep downward tilting position, and the rear end does not protrude upward, but the chain case The combination of the gentle slope on the upper surface of the rear end of the case and the circular conveying action of the conveying claws allows the easily bent ears to be smoothly guided and slid down toward the supply port of the threshing device.

In addition, when adjusting shallow handling by tilting the grain culm conveying device upward relative to the long culm, the rear part of the grain side conveying body approaches the threshing device abnormally; As it moved away from the device, the sloped surface of the canopy guide plate moved further forward from the slope of the chain case, allowing the ears of grain to slide down smoothly without stagnation, which eventually caused them to collapse and become extremely soft. Even grain culms can be supplied to the threshing device in an orderly manner while preventing disturbances in the ears and transport delays.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Fig. 1 is a side view of the combine with the rear part omitted, Fig. 2 is a plan view of the same as above, Fig. 3 is a sectional view showing the relationship between the grain culm transport device and the threshing device, and Fig. 4 is the upper part of the ear side transport body. FIG. 5 is a plan view with the cover removed, FIG. 5 is a partially cutaway side view of the rear part of the grain culm conveying device, and FIG. 6 is a side view showing the operation of the main parts. 1... Threshing device, 10... Chain case, 12
...Ear side conveyor, A...Reaping device, B...Grain culm transfer device, C...Gentle slope.

Claims (1)

[Scope of utility model registration request] A pre-processing device consisting of a reaping device and a grain culm conveying device is attached to the front part of the threshing device mounted on the machine base, and the grain culm conveying device is composed of a stump base conveying body and a ear side conveying body. In a combine that is pivotally supported so as to be tilted vertically around the front part of the supply port of the threshing device for adjustment, the ear side conveyor is connected to a chain having a large number of conveyor claws pivotably mounted to be able to raise and lower; The upper rear end of the chain case is formed into a gentle slope that extends rearward from the slanted lower edge of the canopy guide plate attached to the upper surface and covers the vicinity of the front end of the transport claw. A head conveying device for a combine harvester, characterized in that: