JP2000188915A - Rotary bucket device of harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the rotary bucket device of a harvester wherein a rotary rail does not slip on driving wheels, even when the rotary rail and the driving wheels are wetted with rain, etc. SOLUTION: This rotary bucket device comprises a rotary bucket 2, a rotary rail 3 which is coaxially attached to one of the end surfaces of the rotary bucket and has an channel-like outer circumferential surface, one or more driving wheels 4 which are attached to the frame of a harvester and are used for rotating the rotary rail, and one or more press rollers 5 which are attached to the frame and are rotatably brought into contact with the rotary rail to prevent its fluctuation. Therein, a toothed belt 6 or a belt having pin holes is wound and fixed to the channel-like outer circumferential surface of the rotary rail. A gear capable of being engaged with the teeth of the toothed belt, a pin wheel capable of being engaged with the pin holes of the belt having the pin holes, or an uneven wheel having mountain-like convexes and concaves on the circumferential surface is disposed as the driving wheel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a rotary bucket device for a harvester.

[0002]

2. Description of the Related Art A rotary bucket of a rotary bucket device installed in a harvesting machine for root crops or the like is configured such that a wire hollow cylindrical body having an open inner peripheral surface is partitioned at an equal angle with respect to an axis to form a large number of rotary buckets. The bucket has a shape arranged in the circumferential direction. A rotary rail having a channel-shaped outer surface made of a channel-type steel material is coaxially fixed to one end surface of the rotary bucket, and the rotary rail is rotatably supported by three or more wheels provided on the harvester body. These wheels are a presser wheel and a drive wheel, and fit into the channel-shaped outer peripheral surface of the rotary rail. The drive wheels rotate the rotary bucket. The conventional rotary bucket device is
A rubber cot was fitted on the drive wheel, and the rotary rail was driven to rotate by friction.

[0003]

In the conventional rotary bucket device, when the rotary rail is wet by rain or the like, the friction is reduced and slip occurs. In order to prevent slippage, it is necessary to adjust a pressing mechanism for pressing the drive wheel against the rotary rail with a spring or the like. However, since slippage depends on the degree of wetness of the rotary rail, adjustment was not easy.

SUMMARY OF THE INVENTION An object of the present invention is to provide a rotary bucket device which does not need to adjust the drive wheels even when the rotary rail gets wet.

[0005]

In order to solve the above-mentioned problems, the present invention adopts a method in which a driving wheel is a gear or a pin wheel, or an uneven wheel having a mountain-shaped unevenness along a peripheral surface, and the outer periphery of a rotary rail. A belt made of rubber or synthetic resin or a belt with pin holes is fixed around the surface.

[0006] The drive wheels of a gear wheel or a pin wheel, or an uneven wheel having a mountain-shaped unevenness along the peripheral surface, engage the gears or the pin and the pin holes on the toothed or pin hole belt of the rotary rail. Alternatively, since the rotation is transmitted by the contact engagement between the concave and convex surfaces, whether the rotary rail is wet or not, the rotational driving without any trouble due to the slip is always performed. Therefore, the conventional adjustment of the drive wheels when the rotary rail is wet with rain is unnecessary.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to an embodiment shown in the drawings. FIGS. 1 and 2 are a side view and a front view, respectively, of a rotary bucket device 1 according to an embodiment. A rotary rail 3 is coaxially fixed to one end surface of a wire-made rotary bucket 2 similar to a hollow cylindrical body. Rotary rail 3
Is formed of a channel-type steel material, has a channel-shaped outer peripheral surface, and the inner diameter thereof is substantially the same as the inner diameter of the rotary bucket 2. The rotary rail 3 includes two drive wheels 4 symmetrically arranged with respect to a vertical plane passing through the axis of the rotary bucket 2,
4 is rotatably supported by the presser wheel 4 and its movement is suppressed by a presser wheel 5 located at the top of the rotary rail 3.

The drive wheels 4, 4 and the presser wheel 5 are fitted on the channel-shaped outer peripheral surface of the rotary rail 3, and are supported by a harvester body (not shown). The driving wheel 4 and the presser wheel 5 are the same shape and the same size, and as shown in an enlarged manner in FIG. 3, the driving wheel 4 is a gear, and is wound around the channel-shaped outer peripheral surface of the rotary rail 3 and is attached or fixed by screwing. The teeth of the toothed belt 6 have the same pitch as the gear of the drive shaft 4.

As described above, the rotary rail 3 around which the toothed belt 6 is wound is a large gear, and the driving wheel 4 meshing with the teeth of the toothed belt 6 is a pinion.
Reference numeral 4 drives the rotary bucket 2 to rotate by gear transmission. Since the gear transmission is a rotation transmission without slip, even if the toothed belt 6 of the rotary rail 3 gets wet with rain, the rotary bucket 2 smoothly rotates at a predetermined rotation speed. Even if the rotary rail 3 gets wet with rain, there is no need to adjust the engagement of the drive wheels 4, 4.

As shown in FIG. 1, in a harvesting operation, potatoes and the like that have been harvested are fed into an upward opening of a bucket 8 located at the lowermost portion of the rotary bucket 2 from a lower conveyor (not shown). The drive wheels 4, 4 rotate in the direction of the thin arrow to rotate the rotary bucket 2 in the direction of the thick arrow. The bucket 8 into which the potatoes have been thrown rises while rotating. The opening of the rising bucket 8 is closed by a guide plate 7 fixed to the machine frame of the harvester, and the potato inside is prevented from falling. Since the guide plate 7 does not close the downward opening of the uppermost bucket 8, the potato in the bucket 8 that has come to the uppermost part falls from the opening to the upper conveyor (not shown).

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In another embodiment shown in FIG. 4, a drive wheel 4a is a pin wheel. The rotary rail 3 is the same as that of the above-mentioned embodiment, except that the channel-shaped outer peripheral surface has a belt 6a with pin holes.
Is fixed by winding, affixing or screwing. The pins of the drive wheel 4a and the pin holes of the belt 6a have the same pitch, and the pins and the pin holes are engaged with each other to transmit rotation without slipping. Other configurations and effects are exactly the same as those of the above embodiment.

The rotary rail 3 and the toothed belt 6 of a further embodiment shown in FIG. 5 are the same as those of FIG.
The drive wheel 4b is an uneven wheel in which mountain-shaped unevenness at equal pitches is formed on the peripheral surface. The drive wheel 4b and the toothed belt 6 are in contact with each other on the uneven peripheral surface. Even if the toothed belt 6 gets wet with rain, trouble does not occur due to slippage. Therefore, the drive wheel 4b smoothly rotates the rotary bucket 3 at a predetermined speed. To rotate.

Although the embodiment comprises one holding wheel and two driving wheels, it is also possible to use two or more holding wheels and one or three or more driving wheels. Further, in the embodiment, the two drive wheels are installed symmetrically with respect to the perpendicular bisector of the rotary rail. However, the present invention is not limited to this position, and may be provided at any position. The presser wheel of the embodiment is located at the top of the rotary rail and is the same shape and size as the drive wheel.However, the presser wheel can be installed at a position other than the top of the rotary rail. A friction wheel without irregularities may be used.

[0014]

As described above, in the rotary bucket device of the present invention, unlike the conventional rotation transmission between the driving wheel and the rotary rail by friction that causes slip, the gears that do not generate slip or the pins and pin holes are different from each other. Or, because of the engagement between the uneven surfaces, there is no need to adjust the drive wheels even if the rotary rail is wet with rain or the like, and the excellent effect that the rotary bucket can always be rotated at a predetermined peripheral speed can be obtained. Play.

[Brief description of the drawings]

FIG. 1 is a side view of a rotary bucket device according to an embodiment of the present invention;

2 is a front view of the embodiment of FIG.

FIG. 3 is an enlarged view showing a main part of the embodiment of FIG. 1;

FIG. 4 is a view corresponding to FIG. 3 of another embodiment,

FIG. 5 is a view corresponding to FIG. 3 of still another embodiment,

[Explanation of symbols]

 1: Rotary bucket device 2: Rotary bucket 3: Rotary rail 4, 4a, 4b: Drive wheel 5: Presser wheel 6: Toothed belt 6a: Pinhole belt 7: Guide plate 8: Bucket

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Kunihiro Funabiki, Inventor Kunihiro Obihiro City, Hokkaido, Japan 1-5-2-5, Nishi-Jo 22-5 Kita Yamaki No. 2-5 Toyo Agricultural Machinery Co., Ltd. F-term (reference) 2B072 AA01 CA28

Claims (2)

[Claims] 1. A rotary bucket (2), a rotary rail (3) having a channel-shaped outer peripheral surface coaxially mounted on one end face of the rotary bucket, and the rotary rail mounted on a machine frame of a harvester. A rotary wheel having one or more driving wheels (4) for rotating and driving, and one or more pressing wheels (5) attached to the machine frame and rotating in contact with a channel-shaped outer peripheral surface of the rotary rail. In the bucket device, a toothed belt (6) or a belt with pin holes (6a) is wrapped around and fixed to the channel-shaped outer peripheral surface of the rotary rail, and the driving wheel engages with the teeth of the toothed belt, or the pin. A rotary bucket device for a harvester, characterized in that it is a pin wheel that engages with a pin hole of a perforated belt, or an uneven wheel having a mountain-shaped uneven surface along a peripheral surface. 2. The method according to claim 2, wherein the presser wheel is a gear wheel that meshes with the teeth of the toothed belt, a pin wheel that engages with the pin holes of the belt with pin holes, or an uneven wheel that has mountain-shaped unevenness along the peripheral surface. The rotary bucket device of a harvester according to claim 1, wherein: