JP7042109B2 - Boom sprayer - Google Patents

Description

Yuichi Kakutani, an employee of Yamabiko Corporation, applied Article 30, Paragraph 2 of the Patent Law, unveiled the boom spraying device invented by Yuichi Kakutani and Hidemitsu Endo at Fureai Appreciation Day 2017 held by Michinoku Kubota.

The present invention relates to a passenger-type boom spraying device.

Conventionally, a boom device for liquid spraying is provided at the front end of a passenger-type traveling machine, and a boom device for spraying powder or granular material is provided at the rear end of the traveling machine. There is known a passenger-type boom spraying device capable of selectively spraying two different types of sprayed materials on a single traveling machine (see Patent Document 1 below).

In this boom spraying device, a boom device for liquid spraying and a boom device for spraying powder and granules are vertically attached to the front and rear ends of the traveling machine via an elevating device for adjusting the spraying ground height. There is. Then, the boom of the liquid spraying boom device is deployed to the left and right outward in the traveling direction of the traveling machine during the spraying work, and is folded and stored rearward along the left and right side portions of the traveling machine during the non-spraying work. In addition, the boom of the boom device for spraying powder or granular material has a first folding part for folding the boom extending outward to the left and right of the traveling machine upward, and a boom at a position closer to the tip of the boom than this first folding part. It is equipped with a second folding part for folding in the front-rear direction of the traveling machine, and the boom folded at the first folding part and the second folding part is set to a height that does not hinder the driver of the traveling machine. It is equipped with a boom holding means for holding.

Japanese Unexamined Patent Publication No. 2001-69897

In the above-mentioned conventional boom spraying device, although the boom device is attached so as to be able to move up and down via the lifting device, the maximum height is limited, and the vine is wrapped around a support and cultivated like a long potato. There is a problem that it cannot be applied to crops whose above-ground height exceeds 2 m. In addition, although it is possible to increase the maximum height of the lifting device, the weight of the tank reservoir mounted on the traveling machine changes as the work progresses, so the maximum height of the boom device is unnecessarily increased. If it is too high, there will be a problem that the weight balance during work cannot be maintained stably.

Further, in the conventional boom spraying device, the booms of the boom devices provided on the front and rear of the traveling machine body can be folded and stored. For this reason, there is a problem that the cost of the entire device becomes high due to the large number of expensive booms, and further, a storage space for storing each boom is required around the traveling machine, which provides good storability. There was a problem that could not be obtained.

An object of the present invention is to deal with such a problem. In other words, while maintaining a stable weight balance during work, it is possible to effectively spray crops with a height above 2 m, and boom devices should be placed in front of and behind the traveling machine. Therefore, it is possible to provide a boom spraying device that is low in cost and has improved boom storability while enabling versatile liquid spraying, or to provide a boom spraying device that is easy to use and has a simple structure. This is a subject of the present invention.

In order to solve such a problem, the boom spraying device according to the present invention has the following configurations.
A passenger-type traveling machine equipped with a tank, a front boom device mounted on the front end of the traveling machine and having a boom height below the set height, and a boom mounted on the rear end of the traveling machine. The rear boom device is provided with a rear boom device having a height above the set height, and the rear boom device can set the boom height to a position higher than the uppermost position of the tank, regardless of changes in the storage capacity of the tank. The center of gravity of the traveling machine body including the tank is located between the front wheel shaft and the rear wheel shaft of the traveling machine body, and the front boom device and the rear boom device are provided with a boom attachment / detachment portion capable of sharing a boom . Boom spraying device.

The boom spraying device having such characteristics is stable while traveling because the center of gravity of the traveling machine during work is located between the front wheel axle and the rear wheel axle even when the boom height of the rear boom device is set high. The spraying work can be realized.

Further, the boom spraying device having such a feature is a front boom device mounted on the front end of the traveling machine to perform spraying work at a low ground clearance, and a rear boom device mounted on the rear end of the traveling machine. Since the spraying work is performed at a high ground clearance, it is possible to perform differentiated work such as spraying low crops on the front side and spraying high crops on the rear side, as well as chemicals sprayed at a high ground clearance. It is possible to prevent the driver of the traveling aircraft from suffering.

Further, by providing the elevating device of the rear boom above the frame of the traveling machine, it is possible to prevent the elevating device from coming into contact with crops or the like when working on the front boom, and the elevating device can be placed on the ground or on the ground. Since it can be placed away from the crops of the above, it is possible to suppress the deterioration of operation due to dirt and foreign matter contamination of the elevating device and simplify the maintenance work.

The front boom device and the rear boom device in such a boom spraying device differentiate the boom spraying heights above and below the set height, and instead of using both at the same time, the boom is shared and the front and rear are shared. By attaching the boom to only one of them and performing the spraying work, it is possible to reduce the cost. In addition, by sharing the boom and sharing the folding storage space of the boom, it is possible to improve the storability when the boom is folded.

It is a side view which showed the state at the time of work of the boom spraying apparatus which concerns on embodiment of this invention. It is a front view at the time of using the front boom device in the boom spraying device which concerns on embodiment of this invention. It is a front view at the time of using the rear boom device in the boom spraying device which concerns on embodiment of this invention. It is a side view which showed the boom retracted state when the boom is attached to the front boom device in the boom spreading device which concerns on embodiment of this invention. It is a side view which showed the boom retracted state when the boom is attached to the rear boom device in the boom spreading device which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same reference numerals in different figures indicate parts having the same function, and duplicate description in each figure will be omitted as appropriate. In the following description, a boom spraying device for spraying a liquid agent will be described as an example, but the sprayed material is not limited to the liquid agent.

As shown in FIG. 1, the boom spraying device 1 according to the embodiment of the present invention includes a passenger-type traveling machine body 10. The traveling machine body 10 is equipped with a tank 11 in which a liquid agent to be sprayed is stored. A driver's seat 12 is provided on the front side of the tank 11, and various operation switches including a steering wheel 13 are provided around the driver's seat 12. Further, the traveling machine body 10 is provided with an engine box 14 in which an engine (not shown) as a drive source is mounted at the front portion, and a pair of front wheels 15 and rear wheels 16 driven to be rotated by the engine are provided on the left and right sides, respectively. There is.

The traveling machine body 10 of the boom spreading device 1 is equipped with a front boom device 20 at the front end and a rear boom device 30 at the rear end. The front boom device 20 can set the boom height below the set height HL, and the rear boom device 30 can set the boom height above the set height HL. The set height HL here is set to the uppermost position of the tank 11, but it can be set to an appropriate height.

The boom spraying device 1 supplies the liquid agent stored in the tank 11 to either the front boom device 20 or the rear boom device 30 to perform the spraying operation. When the front boom device 20 is selected, the boom is set to a low position and the liquid agent is sprayed, so that it is applied to the liquid agent spraying and the herbicide spraying to crops having a low ground clearance. On the other hand, when the rear boom device 30 is selected, the boom is set to a high position and the liquid agent is sprayed, so that the liquid agent is applied to crops having a high ground clearance.

In the illustrated example, the front boom device 20 is attached to the traveling machine body 10 via an elevating device 21 that raises and lowers the boom height below the set height HL, and the rear boom device 30 sets the boom height to the set height. It is attached to the traveling machine body 10 via an elevating device 31 that elevates and elevates above the HL. The elevating devices 21 and 31 both have a well-known structure including parallel link mechanisms 21A and 31A and telescopic cylinders (electric cylinders or hydraulic cylinders) 21B and 31B. Further, all of the elevating devices 31 to which the rear boom device 30 is mounted are provided above the frame of the traveling machine body 10.

In such a boom spraying device 1, the boom height can be set to a height of 2 m or more by the rear boom device 30, but regardless of the change in the liquid agent storage amount of the tank 11, the traveling machine body 10 including the tank 11 The weight is distributed so that the center of gravity is always between the front wheel axle 15A and the rear wheel axle 16B. As a result, even when the boom is set to a high position, stable spraying work can be performed while traveling.

In addition, since the boom device that sets the boom to a high position and performs spraying work is mounted on the rear side, it is possible to prevent the driver of the traveling machine 10 from being exposed to chemicals or the like sprayed at a high ground clearance. can do.

FIG. 2 shows a state of spraying work by the boom spraying device 1 using the front boom device 20. The front boom device 20 includes a center boom 20S having a dispersion range between the left and right wheels of the front wheels 15 and the rear wheels 16 in the traveling machine body 10. Further, the boom 20L deployed on the left side and the boom 20R deployed on the right side are detachably attached to the left and right boom attachment / detachment portions 22 and 23.

As described above, the front boom device 20 can raise and lower the boom (center boom 20S and left and right booms 20L, 20R) between the highest position H01 and the lowest position H02 below the set height HL. Since the front boom device 20 has a spraying range between the left and right wheels by the center boom 20S, when spraying a crop with a low ground clearance, the ridges on which the crops are planted are sprayed while straddling the left and right wheels. be able to.

In this way, when the front boom device 20 is used to perform the spraying work while straddling the crops, the elevating device 31 of the rear boom device 30 is provided above the frame of the traveling machine body 10, so that the elevating device is provided. It is possible to avoid a problem that the 31 comes into contact with the crop under the frame. Further, by providing the elevating device 31 above the frame of the traveling machine 10, the elevating device 31 can be arranged away from the ground and the crops on the ground, so that the operation deterioration due to dirt and foreign matter mixed in the elevating device 31 is suppressed. It is possible to simplify the maintenance work. Further, even when the elevating device 31 is in the lowermost state (the state of FIGS. 3 and 4), since all the parts of the elevating device 31 are not below the frame, the elevating device 31 is in the lowermost state. , The work can be performed using the front boom device 20.

FIG. 3 shows a state of spraying work by the boom spraying device 1 using the rear boom device 30. In the rear boom device 30, a boom having a nozzle is not provided at the position of the center boom 20S in the front boom device 20, and the outside of the left and right wheels of the front wheels 15 and the rear wheels 16 in the traveling machine body 10 is the spraying range.

As described above, the rear boom device 30 can raise and lower the boom (left and right booms 20L, 20R) between the highest position H11 and the lowest position H12 above the set height HL. The spraying of the liquid agent by the rear boom device 30 can be used, for example, for cultivating long potatoes by wrapping a vine on the ground around a support or a net. It cannot be done, and the boom is extended from the side of the ridge of the crop to perform the spraying work.

When the rear boom device 30 is used, the left and right booms 20L and 20R attached to the front boom device 20 are removed from the boom attachment / detachment portions 22 and 23, and attached to the boom attachment / detachment portions 32 and 33 of the rear boom device 30. That is, the left and right booms 20L and 20R can be shared by the front boom device 20 and the rear boom device 30, and the boom attachment / detachment portions 22, 23, 32, 33 have a common attachment / detachment structure.

4 and 5 show a stored state in which the left and right booms 20L and 20R are folded in the boom spreading device 1. FIG. 4 shows a state in which the left and right booms 20L and 20R are attached to the boom attachment / detachment portions 22 and 23 of the front boom device 20, and in this state, the boom attachment / detachment portions 22 and 23 are obliquely upward and lateral to the traveling machine body 10. The left and right booms 20L and 20R, which are folded in a slanted upward position and attached to the boom attachment / detachment portions 22 and 23, are stored with their tips facing rearward in an obliquely upward state. At this time, the left and right booms 20L and 20R are each held by the folding holding portion 40 arranged near the upper portion of the tank 11.

FIG. 5 shows a state in which the left and right booms 20L and 20R are attached to the boom attachment / detachment portions 32 and 33 of the rear boom device 30, and in this state, the boom attachment / detachment portions 32 and 33 are folded horizontally to the side of the traveling machine body 10. The left and right booms 20L and 20R attached to the boom attachment / detachment portions 32 and 33 are housed with their tips facing forward. At this time, the left and right booms 20L and 20R are held by the above-mentioned folding holding portions 40, respectively, and the folding holding portions 40 and the rear boom device 30 when the booms 20L and 20R are mounted on the front boom device 20 The folding holding portion 40 when the booms 20L and 20R are mounted is shared.

As described above, in the boom spraying device 1 according to the embodiment of the present invention, the left and right booms 20L and 20R are shared by the front boom device 20 and the rear boom device 30, so that the number of expensive booms is reduced to two on the left and right. While suppressing the role of the front boom device 20 and the rear boom device 30, one boom spraying device 1 can be used for various crops at ground clearance and for spraying herbicides that need to be sprayed by setting the boom at an extremely low position. It will be possible to do it with. As a result, it is possible to realize a versatile boom spraying device at low cost while having a relatively small engine output and being lightweight as compared with a large tractor or the like. Further, since the left and right booms 20L and 20R are shared and the folding holding portion 40 of the boom is also shared, it is possible to improve the accommodation capacity when the boom is folded.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and the design changes, etc. within the range not deviating from the gist of the present invention, etc. Even if there is, it is included in the present invention. Further, each of the above-described embodiments can be combined by diverting the technologies of each other as long as there is no particular contradiction or problem in the purpose and configuration thereof.

1: Boom sprayer,
10: Traveling aircraft, 11: Tank, 12: Driver's seat, 13: Handle,
14: Engine box,
15: front wheel, 15A: front wheel axle, 16: rear wheel, 16A: rear wheel axle,
20: Front boom device, 30: Rear boom device, 21, 31: Elevating device,
22, 23, 32, 33: Boom attachment / detachment part,
40: Folding holder,
21A, 31A: Parallel link mechanism, 21B, 31B: Telescopic cylinder,
HL: Set height

Claims (7)

A passenger-type traveling aircraft equipped with a tank,
A front boom device mounted on the front end of the traveling machine and having the boom height below the set height,
It is equipped with a rear boom device that is attached to the rear end of the traveling machine and has a boom height above the set height.
The rear boom device can set the boom height to a position higher than the uppermost position of the tank, and the boom height can be set.
The center of gravity of the traveling aircraft including the tank is located between the front wheel axle and the rear wheel axle of the traveling aircraft regardless of the change in the storage amount of the tank.
The front boom device and the rear boom device are boom spreading devices including a boom attachment / detachment portion capable of sharing a boom . The boom spreading device according to claim 1, wherein the rear boom device is mounted via an elevating device that raises and lowers the boom height above the set height. The tank is a liquid agent storage tank and is
The boom spraying device according to claim 1 or 2, wherein the front boom device and the rear boom device spray the liquid agent stored in the tank. The boom spraying device according to claim 2 or 3, wherein the elevating device to which the rear boom device is mounted is provided above the traveling machine body. The boom spraying device according to any one of claims 1 to 4, wherein the front boom device includes a center boom having a spraying range between the left and right wheels of the traveling machine body. The boom spraying device according to any one of claims 1 to 5, wherein the rear boom device covers the outside of the left and right wheels of the traveling machine body as a spraying range. Claims 1 to 6 , wherein the folding holding portion of the boom when the boom is mounted on the front boom device and the folding holding portion of the boom when the boom is mounted on the rear boom device are shared. The boom spraying device according to any one of the following items.

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