JPH0215175B2 - - Google Patents

Description

[Detailed Description of the Invention] Conventionally, combine harvesters equipped with a dropper and a knotter are already known, but the structure is complicated because the passage for supplying waste straw to the dropper and the passage for supplying the knotter are separate. As the aircraft became more advanced, these devices began to protrude far to the rear, causing the aircraft's front-to-back balance to be disrupted.

The purpose of the present invention is to improve the above-mentioned drawbacks, and the present invention is to provide a dropper at the rear of the machine frame across a straw discharging passage, a knotter at the bottom of the straw discharging passage, and a collection of the knotters. The culm faces the straw removal passage from below, and the lower part of the switching member is pivoted to the rear side of the straw removal passage, and when the switching member is erected, it becomes the rear wall of the straw removal passage and moves backward. When tilted, it becomes a dropper and the straw discharge passage becomes a part of the culm collection part, so that one straw discharge passage is shared by both the dropper and the knotter.

The embodiment shown in the drawings will be explained below.1
is a threshing device mounted on the base of a combine harvester having a traveling device 2, and a straw conveying belt 3 is provided on the top plate of this dust removal chamber and protrudes from the rear to the rear of the machine body at the culm discharge port. A desk cutter 4 is attached to the rear surface of the threshing device 1.

Reference numeral 5 denotes a knotter in which a packer 6, a needle 7 which also serves as an S-shaped ejection rod, a string holder 8 and a building 9 are attached to a transmission case 10, and a collection part 10a between the needle 7 and the building 9. is opened upward, and the transmission case 10 is connected to the desk cutter 4.
It is attached to a recess 4a provided in the rear wall of the.

11 is an L-shaped support pipe whose base is fixed to the rear wall of the desk cutter 4 near the base of the stock;
2 is a plate-shaped dropper that serves as a guide plate forming a straw removal passage 13 at the rear of the desk cutter 4 and collects and discharges waste straw in predetermined amounts, and a bracket 14 is fixed to the lower part of the rear surface. A core metal having a string outlet 15a fixed to the ear side is rotatably inserted into the end of the support pipe 11.

The rear upper part of the bracket 14 is loosely fitted into the support pipe 11, and the front end is fitted into the support pipe 11.
The holder 16, which is fixed to the bracket 14 and overlaps with the bracket 14, has an oblique regulating member 16a bent laterally at the lower part of the front end.
A pin 17 fixed to the rear lower part rotatably supports a boss 18a at the front end of the link 18, and there is a space between the pin-shaped protrusion 19 protruding from the rear end of the link 18 and the holder 16. The tension of the tension spring 20 is adjusted by tensioning the tension spring 20 and changing the number of washers 20a.

Further, the desk cutter 4 has a parallel rotating shaft 2.
A large number of star foil blades 23... and disc blades 24... are attached to 1 and 22, and the rear rotating shaft 22 drives a shaft 27 via gears 25 and 26, and this shaft 27 drives the input shaft 28 of the cutter 5 via a universal joint, and a switching plate 30 that is opened and closed by a lever 29 is hinged to an inlet provided in the upper part of the desk cutter 4.

Furthermore, a culm holder 31 is provided protruding from the rear wall of the desk cutter 4 on the side of the panicle from the knotter 5, and a culm holder 31 is provided at the lower end of the support shaft 32, which is provided protruding rearward from the end on the stock side, as shown in FIG. A shutter 33 having a receiving portion 33a is pivotally attached to the desk cutter 4 so as to be rotatably adjustable.
The upper part of the shutter 34 is rotatably attached to the rear surface of the shutter 34.

Next, the operation will be explained. When the waste straw transported later by the waste straw conveying belt 3 is to be shredded, when the switching plate 30 is opened, the waste straw is shredded by the desk cutter 4 and scattered on the field.

In addition, when discharging waste straw in bundles, the switching plate 30
When the shutter is closed and the shutter 34 is placed in a hanging position as shown by the solid line in FIG. When the packer 6 is engaged and focused by a predetermined amount, a door (not shown) senses this, engages the one-turn clutch, and moves the needle 7 clockwise in FIGS. 1 and 2.
At the same time as it is rotated by 90 degrees to hang the string, the building 9 and the string holder 8 are operated to knot the straw, and the needle 7 is rotated counterclockwise by 180 degrees to push open the culm guide 35 and release the straw bundle to the rear.

When the removing shooter 33 is set at an appropriate angle according to the culm length, the shooter 33 collects the straw while aligning the stock base and receiving the removed straw with its receiving part 33a and the culm supporter 31.

Furthermore, when the straw is collected and discharged by the dropper 12, the switching plate 30 is closed and the shutter 34 is rotated rearward to the position shown by the chain line in FIG. The straw that has fallen and accumulated pushes the dropper 12 backward.

Then, the dropper 12 rotates in the X direction against the spring 20 in FIG.
From the (A) position to the (A) position where the holder 9 contacts the control member 16a of the holder 16, the tension spring 20 simply extends, so it can be easily rotated with a weak force to assume the culm support position.

However, as described above, the protrusion 19
When the protrusion 19 comes into contact with the slope 16a' of a, since the slope 16a' is inclined in a direction intersecting the radial direction of the rotation locus of the pin, the protrusion 19 is subjected to a strong braking force, and its moving speed is significantly reduced. Become slow.

That is, the dropper 12 collects a predetermined amount of waste straw while rotating little by little, and when the protrusion 19 comes off the lower end of the control member 16a, the braking force disappears and the protrusion 19 ( A)", the tension spring contracts by 20L, so the dropper 12
rotates all at once and releases the collected straw. At this time, the pin 17 rotates to the (c) position, and the protrusion 19 is received by the boss portion of the holder 16.

Then, when the straw on the dropper 12 runs out, the dropper 12 is pulled up by the tension spring 20 and rotated, the boss 18a of the link 18 is received by the control member 16a, and the protrusion 19 is connected to the holder 1.
The sixth
It returns to the position (A) shown by the solid line in the figure, and returns to the next culm gathering starting state.

At the time of bundling, the packer 6 sweeps all the waste straw that has fallen into the straw removal path 13 into the collection culm portion 10a, so the dropper 12 maintains the above-mentioned upright posture and becomes the rear wall of the straw removal path 13.

Note that the knotter 5 may be attached to the rear of the threshing device 1 instead of the rear of the desk cutter 4.

Alternatively, the knotter may be a conventional culm gathering part with needles and knots on both sides.

Since the present invention is constructed as described above, a single straw discharging passage can be used in common for supplying straw to the knotter and the dropper, and is different from the conventional structure in which the notter and the dropper are each provided with a straw discharging passage. It is possible to significantly reduce the size and cost, and the weight at the rear of the machine is lighter, allowing stable work to be carried out without disturbing the front-rear balance of the machine. Furthermore, when the switching member is tilted rearward to form a dropper, the straw discharge passage toward the lower bundling device becomes a part of the collecting culm of the dropper, so that the upper part of the bundling device can be used as the collecting culm of the dropper. As a result, the longitudinal length of the entire aircraft can be shortened, and the longitudinal balance of the aircraft can be further improved.

[Brief explanation of drawings]

The drawings show one embodiment of the invention,
Fig. 1 is a side view of the combine with the front section omitted, Fig. 2 is a sectional view taken along line AA in Fig. 3, and Fig. 3 is a rear view.
Fig. 4 is a plan view, Fig. 5 is a plan view of the dropper,
FIG. 6 is a side view of the same, and FIG. 7 is a bottom view of the same. 1... Threshing device, 4... Desk cutter, 5...
...Knotter, 13... Straw removal passage, 16... Holder, 16a... Control member, 18... Link, 19
...Protrusion, 20...Tension spring.

Claims (1)

[Claims] 1. A dropper is provided at the rear of the machine frame across the straw removal path, a knotter is provided at the bottom of the straw removal path, the collecting culm of the knotter faces the straw removal path from below, and a dropper is provided behind the straw removal path. The lower part of the switching member is pivotally supported on the side, and when the switching member stands up, it becomes the rear wall of the straw removal passage, and when tilted backward, it becomes a dropper and the straw removal passage becomes a part of the culm collecting part. A waste straw processing device for a combine harvester, characterized in that: