JP2657767B2 - Farm work vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural work vehicle that performs various agricultural operations by running along ridges in a field.

[0002]

2. Description of the Related Art In general, among various types of agricultural work using a farm work vehicle in a field, sowing, fertilization, weeding, and the like are performed while moving the farm work vehicle along the ridges of the field. With the steering operation described above, the traveling wheels are guided by the ridges to travel.

[0003]

By the way, not only ridges formed in the field but also straight ridges are formed, and some ridges are shallow, and there are many soft ridges of soil. In conventional agricultural work vehicles that are driven, wheels often ride on ridges or break ridges and do not travel correctly along the ridges.In order to keep the traveling direction of the agricultural work vehicle correct, workers need a high degree of skill. However, it has been pointed out that there is a need to frequently correct the traveling direction. Early cultivation of vegetables and the like covering the field scene with a black resin sheet is performed, but in the case of agricultural work in a field covered with a resin sheet, when returning the wheel riding on the ridge mountain to the ridge groove. In fact, there is a risk that the resin sheet may be strongly rubbed and damaged, so that the conventional agricultural work vehicle cannot perform such agricultural work properly.

[0004] The present invention is to solve the above-mentioned various problems in the conventional agricultural work vehicle,
Even if the ridges in the field are not linear, the ridges are shallow,
Even if the ridge is soft soil, the running wheel can be guided along the ridge and reliably run along the ridge, and even when farming in a field covered with the resin sheet, the resin sheet can be used. It is an object of the present invention to provide an agricultural work vehicle that is not damaged.

[0005]

The technical means according to the present invention for achieving the above object is as follows. That is, the agricultural work vehicle according to the present invention, in an agricultural work vehicle traveling along the ridges of a field, travels on an outer ring portion of a wheel rotating in a traveling direction, an arc-shaped rolling wheel along an arc of the outer ring portion over substantially the entire circumference. It is provided with traveling wheels provided to be able to roll freely in a direction perpendicular to the direction.

Further, in the agricultural work vehicle according to the present invention, in an agricultural work vehicle running along a ridge of a field, an arc-shaped rolling wheel along an arc of the outer ring portion is provided on an outer ring portion of a wheel rotating in the running direction. A traveling wheel is provided so as to be rollable in a direction orthogonal to the traveling direction over the circumference so as to be freely turned in the left-right direction.

In the agricultural work vehicle having the above configuration according to the present invention, it is preferable that the arc-shaped rolling wheel is formed of a flexible material such as rubber or soft synthetic resin. The arc-shaped rolling wheel made of this flexible material may be not only a cylindrical shape having a smooth outer peripheral surface but also a plurality of concave grooves formed in a circumferential direction or an axial direction. In order to improve the performance, a suitable means such as interposing a low friction bearing made of resin may be applied.

[0008]

According to the agricultural work vehicle according to the present invention, an arc-shaped rolling wheel along the arc of the outer ring portion can be rolled on the outer ring portion of the wheel rotating in the traveling direction over substantially the entire circumference in a direction perpendicular to the traveling direction. In the process of running the agricultural work vehicle along the ridges of the field, when the traveling wheels try to advance in the direction from the ridges to the ridges, the arc-shaped rolling wheels move along the outer ring portion. The wheels roll as a shaft in a direction orthogonal to the running direction, and the running wheels are automatically returned from the ridges to the ridges. For this reason, the agricultural working vehicle travels along the ridge with its traveling wheel correctly guided by the ridge. Then, even if the ridges in the field are not linear, the ridges are shallow, and the ridges are soft, the traveling wheels are reliably guided by the ridges and run along the ridges correctly. In addition, since the arc-shaped rolling wheel has flexibility, even if the outer ring portion has an arc shape, the rolling is not hindered.

[0009] A plurality of arc-shaped rolling wheels provided on the outer wheel portion of the traveling wheel so as to freely roll are provided over substantially the entire circumference of the outer wheel portion, and each rolling wheel is provided along the entire circumference of the outer wheel portion. As the running wheels return from the ridges to the ridges, they do not partially rub the valleys of the ridges, and the wheels are flexible. Even if is covered with a resin sheet, there is no risk of damaging the resin sheet.

[0010] In the agricultural work vehicle according to the present invention, when the traveling wheels are provided so as to be capable of turning in the left-right direction, the action of turning the traveling wheels in the left-right direction is further applied. Even when the angle is small, the traveling direction of the traveling wheels is quickly corrected, and the traveling performance for correctly following the ridge of the agricultural work vehicle is further improved.

[0011]

An embodiment will be described with reference to the drawings. In FIG. 1, 1 is an agricultural work vehicle, and 2 is its traveling wheel.
The agricultural work vehicle 1 performs various agricultural works while guiding the traveling wheels 2 along the ridges 4 of the ridges 3 in the field and running along the ridges 3. 5 is Uneyama. Reference numeral 6 denotes crops such as vegetables. Reference numeral 7 denotes a mounting portion for the traveling wheel 2.

As shown in detail in FIGS. 2 and 3, the traveling wheel 2 of the agricultural work vehicle 1 is provided with an arc-shaped rolling wheel 9 along the arc of the outer ring portion 8 on the outer ring portion 8 of the wheel rotating in the traveling direction. It is provided so as to freely roll in a direction perpendicular to the traveling direction over the entire circumference. The plurality of arc wheels 9 are made of a flexible material such as rubber or soft synthetic resin.

The arc-shaped rolling wheel 9 has a shape of an arc that divides substantially the entire circumference of the outer ring portion 8 into six equal parts, and an elastic spiral 10 of metal or the like is embedded or interposed at the axis thereof. , The bearing of the arcuate wheel 9 is formed. It is essential that the arc-shaped roller 9 has a relatively long arc shape, and it is preferable that the substantially entire circumference of the outer ring portion 8 be equally divided into six or eight.

FIGS. 4 and 5 show other examples of the arcuate rollers 9 respectively. The one shown in FIG. 4 has a plurality of grooves 11 formed in the circumferential direction. In this circular roller 9 as well, a bearing portion is formed by embedding or interposing an elastic spiral in the shaft center portion, but illustration thereof is omitted. A plurality of concave grooves 11 can be formed in the axial direction. The traveling wheel 2 provided with the arc-shaped rolling wheels 9 has a large anti-slip effect in the traveling direction, and the traveling of the agricultural work vehicle in the field is smooth.

The arc-shaped wheel 9 shown in FIG. 5 has a cylindrical exterior part 12 made of a soft material and a low friction bearing 13 made of a synthetic resin. The traveling wheel 2 provided with the arc-shaped rolling wheel 9 can further improve the flexibility of the wound portion 12 and further smoothly rolls with respect to the outer wheel portion 8.

In the agricultural work vehicle 1 configured as described above, the traveling wheel 2 tries to move in the direction in which the traveling wheel 2 rises from the ridge groove 4 of the ridge 3 to the ridge mountain 5 in the process of traveling along the ridge 3 of the field. Then, since the arc-shaped rolling wheels 9 roll in a direction orthogonal to the running direction, the running wheels 2 automatically slide down from the ridges 5 into the ridge grooves 4 and are returned to the correct running positions. For this reason, the agricultural work vehicle 1 travels along the ridges 3 with its traveling wheels 2 correctly guided by the ridges 4. Therefore, even if the ridges 3 in the field are not linear, the ridges 4 are shallow, and the ridges 3 are made of soft soil, the traveling wheels 2 are reliably guided by the ridges 4 and correctly follow the ridges 3. I will run.

A plurality of arc-shaped rolling wheels 9 provided on the outer wheel portion 8 of the traveling wheel 2 so as to freely roll are provided over substantially the entire circumference of the outer wheel portion 8, and each rolling wheel 9 is provided with an outer wheel. Part 8
Is extended along the entire circumference of the ridge 3, so that when the traveling wheel 2 returns from the ridge ridge 5 to the ridge groove 4, the valley surface of the ridge 3 does not partially strongly rub. Moreover, since the arc-shaped rolling wheel 9 has flexibility, even when the field scene is covered with the resin sheet, there is no risk of damaging the resin sheet.

In the structure shown in FIG. 1, if the mounting portion 7 of the traveling wheel 2 is configured to be able to turn to the left and right, the traveling wheel 2
In addition, the traveling direction of the traveling wheel 2 is quickly corrected even when the angle between the direction in which the traveling wheel 2 is going to climb the ridge 5 and the ridge 5 is small, and the traveling direction of the farm work vehicle 1 is increased. The running performance to correctly follow the ridge is further improved.

The agricultural work vehicle 1 according to the present invention, shown as an embodiment, comprises a traveling wheel 2 having a plurality of arcuate rolling wheels 9 which are rotatable in a direction orthogonal to a traveling direction on an outer wheel portion 8 and the left and right front wheels. However, the running wheels 2 can be used for various implementations, such as forming one of the left and right front wheels, the left and right rear wheels, one of the right and left rear wheels, and all the front and rear wheels. Can be. In addition, the present invention can be applied not only to agricultural work vehicles but also to various work vehicles.

[0020]

According to the present invention, even if the ridges in the field are not linear, the ridges are shallow, and the ridges are soft,
Not only can the traveling wheels be reliably guided by the ridges and run along the ridges correctly, but also in the case of farm work in a field covered with a resin sheet, there is a farm work vehicle that does not damage the resin sheet can get.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a configuration of an agricultural work vehicle according to one embodiment of the present invention.

FIG. 2 is an enlarged side view of traveling wheels of the agricultural work vehicle shown in FIG.

FIG. 3 is a perspective view of FIG. 2;

FIG. 4 is a sectional view of an arcuate wheel according to another embodiment of the present invention.

FIG. 5 is a sectional view of an arcuate wheel according to still another embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 agricultural work vehicle 2 running wheel 3 ridge 4 ridge groove 5 ridge mountain 6 crop 7 mounting part 8 outer ring part 9 arc-shaped rolling wheel 10 elastic spiral 11 concave groove 12 exterior part 13 low friction bearing

Claims (3)

(57) [Claims] 1. An agricultural work vehicle traveling along a ridge of a field, wherein an outer wheel portion of a wheel rotating in the traveling direction is provided with an arc-shaped rolling wheel along an arc of the outer wheel portion in a direction orthogonal to the traveling direction over substantially the entire circumference. An agricultural work vehicle comprising running wheels rotatably provided on a vehicle. 2. An agricultural work vehicle running along a ridge of a field, wherein an outer circumferential portion of a wheel rotating in a running direction is provided with an arc-shaped rolling wheel along an arc of the outer ring portion in a direction perpendicular to the running direction over substantially the entire circumference. An agricultural work vehicle comprising: a traveling wheel rotatably provided on a vehicle; 3. The agricultural work vehicle according to claim 1, wherein the arc-shaped rolling wheel is made of a flexible material such as rubber or soft synthetic resin.