JPS6358526B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a reaping device that cuts the stock side of sugar cane, a conveying device that changes the posture of the harvested sugar cane to a collapsed position facing the longitudinal direction of the machine body, and transports the sugar cane toward the culm. The present invention also relates to a sugar cane harvester equipped with a defoliation device for scraping leaves from conveyed sugar cane, and a conveyance and discharge device for discharging sugar cane after defoliation.

Since the sugar cane harvester described above removes leaves without shredding the stem, the cut end surface is less exposed to air than the sugar cane harvester which shreds the stem and removes leaves. When the cut end surface is exposed to air, the sugar content is less likely to be oxidized and become invert sugar, which has the advantage of suppressing a decrease in yield.

However, although the above-mentioned harvester defoliates the sugarcane, the leaves after defoliation stick to the sugarcane and are not separated, and if the harvester is to be collected after being released into the field, the leaves must be removed at the time of collection. There was a drawback that the efficiency of post-processing work was lowered, such as having to separate it again, which required time and effort.

Therefore, as a means to solve the above-mentioned drawbacks, there is a technique disclosed in Japanese Patent Publication No. 52-23946.

With this structure, there is a guide wire drum placed above the discharge conveyor located behind the defoliation device to send the defoliated sugar cane to the discharge conveyor, and a guide wire drum that rotates in the opposite direction to the guide wire drum. A reversing wire drum is provided, the guide wire drum and the reversing wire drum cooperate to separate the stalks and leaves of sugar cane, and the separated leaves are lifted upward by the wire drum and sent to a blower. Therefore, it is configured to be released outside the aircraft.

However, with a structure that uses wire drums like this, the wire drums overlap, making it difficult to lift the separated leaves upwards and out of the stem conveyance path. The drawback is that leaves tend to accumulate in the triangular space formed by the wire drum and the discharge conveyor, that is, the dead space, and the wire drum becomes unable to rotate due to clogging, resulting in a decrease in work efficiency. .

An object of the present invention is to enable separation of stems and leaves after defoliation treatment without reducing work efficiency.

The characteristic configuration of the present invention for achieving the above object is that a large number of rods are provided on the downstream side of the conveying and discharging device in the sugar cane conveying direction for damming the leaves from the conveyed sugar cane and separating it into stems and leaves. , with its longitudinal direction along the longitudinal direction of the aircraft, and
The rods are installed side by side in a diagonally tilted position with the rods being taller towards the front of the fuselage, with sufficient spacing to allow the sugar cane stalks to pass through in the width direction of the fuselage. The present invention is characterized in that a discharge port is formed for discharging the leaf part dammed by the rod downwardly from the machine body, and this configuration provides the following effects.

That is, when the conveyed sugar cane after defoliation passes through the rod which is in a forward tilted position, only the rod-shaped stem is conveyed, and the leaves attached thereto are caught by the rod and removed. The leaves mixed in the sugar cane and the leaves dammed up by the rod are flowed downward along the rod and are discharged outside the machine. This prevents the rod, which serves as a separation device after defoliation, from clogging with leaves, and allows reaping work to be performed without reducing work efficiency.

Moreover, since the rods are arranged in a tilted forward position, the leaves dammed by the rods are less likely to be pushed downward by the following leaves or accumulate due to natural flow. for example,
Unlike when the rod is installed in a backward tilted position, there is no need for a blower to blow away the leaves that move upward along the slope of the rod to prevent them from accumulating, making the device more compact and cost effective. It has the advantage of being cheaper.

Hereinafter, embodiments of the present invention will be described in detail based on illustrative drawings.

A lifting device 3 is provided at the front of the traveling machine which is equipped with a crawler traveling device 1 and is also provided with a control section 2, and a cutter 4 for cutting and removing the tip side of sugar cane is provided above and in front of the pulling device 3. At the same time, a reaping device 5 for reaping the stock side of the sugar cane is provided at the rear lower part of the pulling device 3, and is located above the crawler traveling device 1 to direct the reaped sugar cane in the longitudinal direction of the machine body. A conveyance device 6 that clamps and conveys the sugar cane in a sideways posture, and a defoliation device 7 that scrapes leaves during conveyance are provided.Furthermore, a conveyance and release device 8 is provided behind the defoliation device 7 to harvest sugar cane. The machine is configured.

At the rear of the reaping device 5, a pair of upper and lower rake rotors 9 are provided for introducing the harvested sugar cane from the stock side and delivering it to the conveying device 6 in a sideways posture facing the longitudinal direction of the machine. , and rubber blades 10 are attached to each of the rotating bodies 9, 9 at a predetermined interval in the circumferential direction, and the blades 10, 10,... It is configured to act elastically and introduce sugar cane smoothly and without damage even if the amount of sugar cane introduced fluctuates.

The defoliation device 7 is composed of one rotating body 11 provided above the sugar cane transfer path and two rotating bodies 11, 11 provided below. ...In each case, a triangular plate 12a and a pipe 12b connected to the outer periphery thereof are separated by a predetermined interval in the direction of the rotation axis.
Blade bodies 12 consisting of the above are arranged in parallel, and squeeze plates 13 are protruded from each of the left and right sides of the plate body 12a so as to be positioned substantially on the line connecting the respective tops and the rotation axis. For example, even in the early season when it is difficult to scrape off the leaves from the sugar cane stems because the sugar cane is not fully grown, the protruding ends of the scraping boards 13 can be applied to the base of the leaves to ensure good defoliation. is configured to do so.

A sprocket 15 is attached to the rotating shaft 14 of each of the rotating bodies 11, and a chain 19 is connected between the sprockets 15 and a sprocket 18 attached to the output shaft 17 of the variable displacement hydraulic motor 16. is wound, and the rotational speed of the rotating body 11, that is, the driving speed of the defoliating device 7, is configured to be able to change steplessly independently of other devices. Regardless of the circumstances, the structure is such that the defoliation process can be performed well.

The discharge device 8 is constituted by a pair of upper and lower discharge rotors 21 each having a rubber piece 20 attached thereto at a predetermined interval in the circumferential direction. Rubber piece 2
It is constructed so that it is conveyed while being held in between 0, 20, .

The angle between the horizontal plane and the direction perpendicular to the imaginary line connecting the rotational axes of the upper and lower discharging rotors 21, 21, that is, the angle of the sugar cane discharging direction by the discharging device 8 with respect to the horizontal plane is set to about 13 degrees. The structure is such that the sugar cane is not discharged too far to the rear of the machine, and the sugar cane is discharged and dropped onto the container which is separated and flowed down into the field while maintaining an almost horizontal position without being pierced. has been done. The above angle may be 10° to 15°.

A rake-like member 24 in which bar-shaped rods 23 are arranged at a predetermined interval in the longitudinal direction of the support shaft 22 is placed behind the discharge device 8, and the support shaft 22 is positioned above the discharge sugar cane. and is provided in such a way that the released sugar cane passes between adjacent rods 23, 23..., and as the released sugar cane passes, the leaves attached to the stems are removed from the rods arranged in parallel in the width direction of the conveyance path. 23... and is configured to be forcibly separated from the stem.

The rods 23 are provided in an inclined position such that the lower side is located toward the rear of the machine body, and is configured so that the leaves separated from the stems flow down along the rods 23.

The support shaft 22 is rotatably and fixedly attached by changing the connection position of a pin 1b to a bracket 1a connected to the body frame, and its inclination angle is adjusted so that the lower side is located at the rear of the body. The structure is such that the tilted posture is adjusted depending on the properties of the leaf, such as a gentle tilted posture when the leaf is likely to get entangled with the rods 23.

At the rear of the rods 23, a pair of left and right discharge guides 25, 25 are provided such that the distance between them decreases toward the rear of the machine body, and the sugar cane from which the leaves have been separated is reliably discharged into the harvested field. It is structured in such a way that

A discharge port K is formed between the discharge device 8 and the rake-shaped member 24 for discharging the leaf part dammed by the rod 23 of the rake-shaped member 24 to the lower side of the machine body.

FIGS. 6 and 7 show a modified example in which a rod 23 is provided in place of the ejection device 8, and the rod 2
3... is provided with a cutting device 27 consisting of a pair of upper and lower rotary blades 26, 26 for shredding the discharged sugar cane in the direction of the culm, and a collecting device 28 for collecting the cut chips. The sugar cane is shredded after the leaves have been separated, and the chips are recovered with less contamination by the leaves.

A discharge port K is formed between the leaf removal device 7 and the rod 23 for discharging the leaves dammed by the rod 23 to the lower part of the machine body.

The recovery device 28 includes a conveyor 29 that receives the shredded chips and transports them upward on one side of the machine.
And, near the upper end of the conveyor 29, there is a support arm 3 which is driven by a hydraulic cylinder 30 and can freely swing up and down.
1 and 31, and the collection container 32 is driven up and down to a receiving position and a position close to the ground, so that chips can be easily collected.

A fan 33 is installed between the cutting device 27 and the conveyor 29 with the air blowing direction facing upward to the rear of the machine.
is provided, and is configured to screen the leaves and chips to better prevent the leaves from being mixed into the collected chips.

FIG. 8 shows a modification of the discharge guides 25, 25, in which the rear end side is bent, and the bent portion 25
a, 25a are provided so as to be parallel to each other.

As the discharge guides 25, 25, for example,
As shown in Figure 9, the arrangement is such that the distance between the two faces increases as seen from the rear, providing resistance to the sugar cane that is about to be ejected upwards, and unnecessarily ejecting it to a far position at the rear of the aircraft. It may be configured to prevent this from happening.

Further, the rod 23 is not limited to a round bar shape, but may have a semicircular cross-sectional shape as shown in FIG. Various structural modifications are possible, such as configuring it so that it becomes tapered.

Further, according to the present invention, the release device 8 is replaced with the defoliation device 7.
A pair of upper and lower discharge rotating bodies 21, 2
1 may be omitted.

Further, the angle of the rods 23 is preferably in the range of 20° to 30° with respect to the vertical plane. Further, when configuring the rods 23, for example, the rods 23 are arranged side by side in the shape of the ribs of a fan, and their fixing positions can be changed in the vertical direction, etc. The distance between adjacent rods 23 at the point where the sugar cane passes can be changed to It may be possible to adjust it depending on whether the stem is thin or thick.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the sugar cane harvester according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is an enlarged sectional view of main parts, Fig. 3 is a sectional view taken along the - line in Fig. 2, and Fig. 4 is a sectional view taken along the line -
The figure is a sectional view taken along the - line in Fig. 2, Fig. 5 is a view taken along the - line in Fig. 2, Fig. 6 is a sectional view of the main part showing the form of harvesting as chips, and Fig. 7 is a sectional view taken along the - line in Fig. 6. −
8 is a plan view showing a modified example of the ejection guide, FIG. 9 is a rear view showing a modified example of the ejection guide, and FIG. 10 is a main part showing another embodiment of the rod. FIG. 5... Reaping device, 6... Conveying device, 7... Defoliation device, 8... Conveying and releasing device, 23... Rod, K
...Ejection port.

Claims (1)

[Scope of Claims] 1. A reaping device 5 that cuts the stock side of sugar cane, a conveying device 6 that changes the posture of the harvested sugar cane to a fallen position facing the longitudinal direction of the machine body, and conveys it toward the culm, and A sugar cane harvesting machine equipped with a defoliation device 7 for scraping leaves from the conveyed sugar cane, and a conveyance/discharge device 8 for discharging the sugar cane after the defoliation process, the machine being on the downstream side of the conveyance/discharge device 8 in the sugar cane conveyance direction. In addition, a large number of rods 23 are used to dam up the leaves from the sugar cane being transported and separate them into stems and leaves.
, with its longitudinal direction along the longitudinal direction of the aircraft,
In addition, the rods are arranged side by side in a diagonally tilted forward position, with the sugar cane stalks being placed side by side in the width direction of the fuselage, with the sugar cane stalks being allowed to pass through.
3. A sugar cane harvesting machine characterized in that a discharge port K is formed at the lower part on the upper side in the sugar cane conveyance direction of No. 3 for dropping and releasing the leaf part dammed by the rod 23 to the lower part of the machine body. 2. The sugar cane harvester according to claim 1, wherein the inclination angle of the rod 23 is adjustable.