JP2001103825A - Dew remover for combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject dew remover designed to be switchable in such a manner as to expose unreaped grain culms from above or sideways to an air stream caused thereby. SOLUTION: This dew remover 1 having the function to remove dew from unreaped grain culms on the field is designed to be switchable between a position to expose such grain culms from above to an air stream caused thereby and another position to expose them sideways to such an air stream.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine stripping device and belongs to the technical field of agricultural machinery.

[0002]

2. Description of the Related Art Conventionally, combine harvesters sometimes carry out harvesting and threshing in the early morning when there is morning dew or light rain.
In such a case, the auxiliary worker has previously performed a mowing operation after manually removing the dew or rainwater adhering to the uncut kernels using a swab or the like.

[0003]

As described above, the conventional operation using a combine has a problem that in the early morning or light rain, it is necessary to previously perform a manual dewing operation, which is troublesome, and the operation efficiency is not improved. Was. In addition, if there is a large amount of dew attached to the grain culm, there is a problem that the culm debris adheres to the inner wall of the threshing apparatus due to wet handling in the threshing apparatus and the sorting performance is reduced.

[0004]

SUMMARY OF THE INVENTION The present invention takes the following technical means in order to solve the above-mentioned problems. In other words, according to the first aspect of the present invention, in the defrosting device 1 that performs the defrosting action on the uncut culm in the field, the defrosting device 1 determines the position where the air is blown downward from above the cereal culm and the position of the cereal culm. A combine dew wiping device characterized in that it can be switched to a position for blowing air from a lateral direction.

According to a second aspect of the present invention, when the number of rotations of the dew-off device 1 exceeds a predetermined value, air is blown into the threshing device 2. I have.

[0006]

Embodiments of the present invention will be specifically described below with reference to the drawings. First, combine 3
As shown in FIG. 2, a threshing device 2 is mounted on a traveling vehicle body 5 having a crawler 4, and a mowing pre-processing device 6 is attached to a front side of the threshing device 2 so as to be vertically movable. As is well known, the threshing apparatus 2 is provided with a handling room on the upper side of which a handling drum is mounted on the inside, and a sorting room equipped with a rocking sorting shelf and a pressurized Karamin on the lower side. Thus, the cereal stalks sandwiched by the feed chain 7 and supplied to the handling room are subjected to threshing processing. The cutting pre-processing device 6 includes a cutting device 8 provided at a low position in a front part, and a grain culm conveying device 9 provided to extend from the cutting device 8 to the threshing device 2 at the rear. .

[0007] As described above, the combine 3 includes the reaper 8.
The grain culm in the field cut by the above is transported by the cereal culm transport device 9 and is fed from the terminal end to the feed chain 7 of the threshing device 2 to perform a series of reaping and threshing operations.

Next, a description will be given of the dew-off device 1. First, as shown in FIGS. 1 and 2, the dew-off device 1 is configured to be provided on one side of a combine, in this embodiment, beside the threshing device 2. When the dew-off operation is not performed, such as when traveling on a road, it is rotated and stored as indicated by a two-dot chain line.

A rotating fulcrum shaft 10 is provided on the side of the threshing device 2, and a boss 11 fixed to the dew-off device 1 is rotatably loosely fitted on the rotating fulcrum shaft 10. is there. Further, the dew wiping device 1 is configured to be rotationally driven by an electric motor 12. Of course, a hydraulic motor may be used instead of the electric motor 12, or a configuration may be adopted in which power is obtained from the threshing device 2, the pre-cutting device 6, and the like.

A description will now be given of a cutting and threshing operation in the combine constructed as described above. First, a case where the harvesting and threshing work by the combine 3 is performed in a field where morning dew is attached to the grain stalk early in the morning will be described.

Prior to the work, the operator turns the dew-off device 1 to the working position by turning it outward from the threshing device 2 as shown by the solid line in FIG. 1 and as shown in FIG. Start the motor 12; Then, the fan 13 rotates to generate wind. As shown in FIG. 1, since the wind blows downward from above the uncut culm stalk group 14, the dew attached to the uncut culm bursts and flies off, and the amount of dew attached to the cereal culm is It decreases significantly.

In addition, when the uncut culm is a long culm, if the solid line in FIG. 1 is used, the lower surface side of the dew-off device 1 abuts, and the culm is damaged. Thus, when the grain culm is a long culm, as shown by the two-dot chain line in FIG. Thereby, even when the grain stalk to be cut is a long stalk, the long stalk does not come into contact with the dew-off device 1,
You will be able to perform dew payments.

[0013] This makes it possible to easily perform the dew-off operation whether the uncut grain culm is a long culm or a short culm.
As another method of using the defrosting device 1, when the uncut kernels are dry, the defrosting device 1 is rotated upward to be in the housed state as shown by the two-dot chain line in FIG. When the mowing and threshing operation is performed in a state where the uncut culm is dry, a lot of dust is generated and the dust falling on the operator operating in the operation seat 15 makes it difficult to perform the operation. There was a problem. Then, when the fan 13 is driven to rotate in the housed state, the dust moves in the direction of the arrow 16, so that the dust moves away from the operation seat 15. This allows
The worker can comfortably perform the work.

In a combine with a cabin (not shown) that covers the operation seat 15, the above-mentioned use method is basically unnecessary, but an effect of preventing clogging of a filter of an air conditioner that blows air into the cabin. There is.

Next, FIG. 3 will be described. As described above, in a combine configured to rotate and drive off the dew-off device 1 when dew adheres to the uncut kernels, the state of the dew adhering to the kernels, that is, In addition, the rotation speed of the dew wiping device 1 is changed depending on the amount of dew attached. Specifically, the number of rotations is increased as the amount of dew increases. Although such an increase in the number of rotations is performed manually by an operator, it may be performed based on the detected value of the moisture value while detecting the moisture value of the uncut kernels. As a method for detecting moisture in the cereal stem, a conventionally known method of irradiating the cereal stem with near-infrared rays can be accurately detected. Since the near infrared ray has a specific wavelength to be absorbed by water, the amount of moisture adhering to the cereal stem, that is, the amount of dew can be detected from the remaining amount of this wavelength.

Accordingly, an increase in the number of rotations of the defrosting apparatus 1 means that the inside of the threshing apparatus 2 is in a wet handling state in the threshing apparatus 2. There is a problem that culm debris and the like adhere and the sorting performance is reduced. Therefore, when the rotation speed of the dew-off device 1 is increased, air is blown into the threshing device 2 from outside. Specifically, a fan 17 is provided at the front of the threshing device 2, and wind generated by the fan 17 is blown from the start end to the end of the rocking shelf 18. Thereby, the wet handling state in the threshing device 2 is alleviated, so that a decrease in the sorting performance can be prevented.

Next, another embodiment of the dew-off device 1 will be described with reference to FIGS. On the upper part of the pre-cutting device 6, a boom 1 that can be extended to the left of the combine is provided.
9 is provided. The overhang configuration of the boom 19 will be described. A pinion 22 is fixed to an output shaft 21 of a motor 20 fixedly installed on the mowing pre-processing device 6 side, and a gear 23 fixed to the boom 19 side always meshes with the pinion 22. Configuration.

At the lower part of the boom 19, a plurality of nozzles 24 capable of ejecting compressed air downward are provided at predetermined intervals, and the nozzles 24 are provided with a blower provided on the main body side of the combine. Reference numeral 25 denotes a configuration connected via a piping tube 26.

The function of the boom 19 is to remove the dew attached to the uncut kernels, and is similar to that of the above-described dew-off device 1. When the operator determines that dew has adhered to the uncut kernels, first, the motor 20 is driven to rotate the boom 19 toward the uncut kernels. Then, the blower 25 is driven to eject the compressed air downward from the nozzle 24. As a result, dew adhering to the uncut kernels can be removed, so that a wet handling state in the threshing device 2 can be prevented.

The boom 19 can, of course, be stored in the upper part of the pre-cutting device 6 during traveling on the road, as shown by the solid line in FIG. 4, so that it is safe without contact. The blower 25 is driven by an electric motor 27, but may be driven by another hydraulic motor. Alternatively, the blower 25 may be driven by using a power source from the pre-cutting device 6, the threshing device 2, or the like.
That is, as shown in FIG. 6, the power of the engine 28 rotates a threshing counter shaft 30 via a threshing clutch (belt tension) group 30, and the threshing counter shaft 30 drives a handling cylinder and a sorting relation. However, the blower 25 is further driven from the threshing counter shaft 30 via a blow work latch (belt tension) group 31.

As described above, since the blower 25 receives power from the threshing counter shaft 30 for driving the threshing device 2, even if the blower latch (belt tension) group 31 is inadvertently inserted, the blower 25 is not driven. It is safe.

As described above, the boom 19 is configured to rotate outwardly of the combine by the motor 20. In order to efficiently perform the dew wiping, the boom 19 is rotated by 180 °. Also, if the blower latch 31a of the blower 25 is turned on before the boom has finished turning by 180 °, a load acts on the motor 20 due to the reaction force of the compressed air ejected from the nozzle 24, and the surrounding workers are not affected. When the boom 19 has completed the 180 ° turn, the blower latch 31a is brought into the engaged state, since a problem occurs in which compressed air is applied to a material other than the stalks or uncut kernels.

As a specific configuration, a position sensor (not shown) is provided on the rotation axis of the boom 19 or the output shaft 21 of the motor 20, and a signal from this position sensor is transmitted to the CPU. When the CPU recognizes and determines that the boom 19 has turned 180 °, the work latch 3
A signal is transmitted to the motor 31b that moves the belt tension arm 1a so that the blower latch 31a is turned on. As a result, it is possible to safely and reliably eject the compressed air to the uncut kernels.

The rotation fulcrum 23a of the boom 19 is arranged at the left end of the pre-cutting device 6. Thereby, even if the range where the compressed air is applied to the uncut kernels is the same, the length of the boom 19 can be shortened, and the weight can be reduced. Further, as described above, since the boom 19 is configured to be able to turn by 180 °, it is possible to freely set the angle within the range of 0 ° to 180 ° for use. For example, a dial (not shown) may be provided at an arbitrary position of the operation seat 15 and the angle of the boom 19 may be set by turning the dial. In this way, by enabling the boom 19 to be used at an arbitrary angle, it becomes possible to apply the compressed air ejected from the nozzle 24 to both the forward rice and the uncut culm side rice during round cutting. .

During cutting of the combine, when the end of the cutting line is reached, the combine must perform a turn to change direction. In such a case, basically, the blower 25 of the boom 19 or the aforementioned
Need not be driven. Driving the blower 25 and the like requires a large amount of horsepower, and particularly when driven at the time of turning, a load is applied to the engine together with the load acting on the traveling device of the combine. When there is dew on the uncut culm, the condition of the field is often in the wet field state, so the load acting on the traveling device is greater than in the dry field state, so the engine speed is greatly reduced. Would.

In the combine, when the number of revolutions of the engine decreases, the threshing apparatus 2 is greatly affected. It is essential that the kernels selected in the threshing apparatus 2 rotate at a constant rotational speed, but the rotational speed of the threshing apparatus 2 decreases with the decrease in the engine rotational speed. And the sorting performance of the grains is greatly reduced.

Accordingly, the drive of the blower 25 and the dew-off device 1 is stopped in connection with the turning operation of the combine. Specifically, the position sensor 32a detects the operation angle of the power steering lever 32 that performs the left and right turning of the combine provided in the operation seat 15, and
It is intended to detect that the combine is turning. As shown in FIG. 7, as described above, when the position sensor 32 a detects that the power steering lever 32 is inclined leftward or rightward by a predetermined value (θ degrees) or more, the drive of the blower 25 and the dew-off device 1 is stopped. To do.

Since it is not necessary to pay off the dew during the turn, as described above, the load acting on the engine can be reduced by stopping the dew-off device that requires a large power in the turn as described above. become. In particular, when traveling in wet fields, a large traveling resistance acts on the traveling device, and the engine speed is greatly reduced. In the worst case, the vehicle may not be able to travel. become able to.

[0029]

The present invention has been configured as described above.
In the first aspect, the wind blown by the dew-off device 1 blows from the upper side of the uncut kernel culm group 14 downward, so that the dew attached to the uncut kernel culm flies off, and the grain culm is blown off. The amount of dew adhering to the surface can be significantly reduced. Further, by blowing the wind generated by the dew-off device 1 from the lateral direction of the cereal stem, dust can be kept away from the worker.

According to the second aspect, since the wet handling state can be relaxed, it is possible to prevent the sorting performance from deteriorating and to prevent the object to be treated from adhering to the inner wall in the threshing apparatus 2. it can.

[Brief description of the drawings]

FIG. 1 is a front view of a combine.

FIG. 2 is a perspective view of a combine.

FIG. 3 is a left side sectional view of the threshing apparatus.

FIG. 4 is a plan view of the combine.

FIG. 5 is a left side view of the combine.

FIG. 6 is a diagram of a transmission mechanism.

FIG. 7 is a front view of the power steering lever.

[Explanation of symbols]

 1 ... Dew-off device, 2 ... Threshing device.

Continuing from the front page (72) Inventor Eiichi Imamura 1 Toya-cho, Tobe-cho, Iyo-gun, Ehime Prefecture, Iseki Agricultural Machinery Co., Ltd. 72) Inventor Atsushi Mizushima 1 Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd.

Claims (2)

[Claims] 1. An exfoliating device 1 that performs an exfoliating action on an uncut culm in a field, wherein the efflux device 1 blows air from above and below the cereal culm and from the lateral direction of the cereal culm. A combine stripping device characterized in that it can be switched to a position. 2. An apparatus according to claim 1, wherein air is blown into the threshing apparatus when the rotation speed of the apparatus increases to a predetermined value or more.