JP2019140982A - Boom spraying apparatus - Google Patents

Abstract

To provide a boom spraying apparatus that enables effective spraying and multipurpose liquid chemical spraying to the crops having a ground height exceeding 2 m while stably maintaining a weight balance during working, has a low cost and high storage capability of a boom, is convenient and has a simple structure.SOLUTION: A boom spraying apparatus 1 includes: a riding traveling machine body 10 equipped with a tank 11; a front boom device 20 mounted in the front end of the traveling machine body, and making the height of the boom be lower than the setting height; and a rear boom device 30 mounted in the rear end of the traveling machine body, and making the height of the boom be higher than the setting height. The rear boom device enables setting the boom height at the position higher than the uppermost position of the tank, and has the gravity center of the traveling machine body including the tank being present between the front wheel shaft and the rear drive wheel of the traveling machine body regardless of a change of a storage amount of the tank.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a riding type boom spraying apparatus.

  Conventionally, a boom device for spraying liquid is provided at the front end of a riding-type traveling machine body, and a boom device for spraying granular materials is provided at the rear end of the traveling machine body. There is known a riding-type boom spraying device that can selectively spray two different types of sprayed materials with a single traveling machine body (see Patent Document 1 below).

  In this boom spraying device, a liquid spraying boom device and a powder spraying boom device are respectively attached to the front and rear end portions of the traveling machine body through a lifting device for adjusting the spraying ground height so as to be movable up and down. Yes. Then, the boom of the liquid spraying boom device is unfolded to the left and right outward in the traveling direction of the traveling machine body during the spraying work, and is folded and stored rearward along the left and right sides of the traveling machine body during the non-spraying work. In addition, the boom of the powder application boom device includes a first folding part for folding the boom extending outward from the left and right sides of the traveling machine body upward, and the boom at a position closer to the tip of the boom than the first folding part. It has a second folding part for folding the traveling aircraft in the front-rear direction, and the boom folded at the first folding part and the second folding part is at a height that does not become an obstacle to getting on and off the driver of the traveling aircraft Boom holding means for holding is provided.

JP 2001-69897 A

  Although the conventional boom spreader described above is mounted so that it can be raised and lowered freely via a lifting device, there is a limit on the maximum height, like a long bamboo cultivated by winding a vine around a pillar, etc. There is a problem that cannot be applied to crops where the 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 aircraft changes as the work progresses, so the maximum height of the boom device is unavoidable. If it is too high, there arises a problem that the weight balance during work cannot be stably maintained.

  Moreover, the conventional boom spreading | diffusion apparatus can each fold and accommodate the boom of the boom apparatus each provided before and behind the traveling body. For this reason, there is a problem that the cost of the entire apparatus is increased by providing a large number of expensive booms.Furthermore, a storage space for storing each boom is required around the traveling machine body, and good storage performance is obtained. 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, enabling effective spraying on crops with a height above the ground of 2 m, and arranging boom devices before and after the traveling aircraft Therefore, it is possible to provide a boom spraying device that is low-cost and has improved boom storage performance while enabling multi-purpose liquid spraying, or to provide a boom spraying device that is easy to use and has a simple structure. It is the subject of the present invention.

In order to solve such a problem, a boom spraying apparatus according to the present invention has the following configuration.
A riding-type traveling vehicle body equipped with a tank, a front boom device that is attached to the front end portion of the traveling aircraft body, and has a boom height lower than a set height, and a rear-end portion that is attached to the rear end portion of the traveling aircraft body, A rear boom device having a height higher than the set height, and the rear boom device can set the boom height at a position higher than the uppermost position of the tank, regardless of changes in the storage amount of the tank. A boom spraying apparatus characterized in that the center of gravity of the traveling machine body including the tank is between the front wheel axle and the rear wheel axle of the traveling machine body.

  The boom spraying device having such a feature is stable even while traveling because the center of gravity of the traveling machine body is between the front wheel shaft and the rear wheel shaft even when the boom height of the rear boom device is set high. A spraying operation can be realized.

  In addition, the boom spreading device having such a feature is a front boom device mounted on the front end portion of the traveling aircraft body, performs a scattering work at a position where the ground height is low, and a rear boom device mounted on the rear end portion of the traveling aircraft body. Since the spraying work is performed at a high ground level, it is possible to perform differentiated work such as spraying low crops on the front side, spraying high crops on the back side, and drugs sprayed at high ground level. It is possible to prevent the driver of the traveling machine body from suffering.

  Further, by providing the lifting device for the rear boom above the frame of the traveling machine body, it is possible to avoid the lifting device from coming into contact with crops when working with the front boom. Therefore, the maintenance management work can be simplified by suppressing the deterioration of the operation due to the dirt of the lifting device and the contamination of foreign matter.

  The front boom device and the rear boom device in such a boom spreading device differentiate the boom spreading height above and below the set height, and share the boom without using both at the same time. The cost can be reduced by attaching the boom to only one of them and performing the spraying operation. Also, by sharing the boom and by sharing the folding storage space of the boom, it is possible to improve the storage performance when the boom is folded.

It is the side view which showed the state at the time of the operation | work of the boom spraying apparatus which concerns on embodiment of this invention. It is a front view at the time of use of the front boom apparatus in the boom spreading apparatus which concerns on embodiment of this invention. It is a front view at the time of the rear boom apparatus use in the boom spreading apparatus which concerns on embodiment of this invention. It is the side view which showed the boom accommodation state when a boom is mounted | worn with the front boom apparatus in the boom spreading apparatus which concerns on embodiment of this invention. It is the side view which showed the boom accommodation state when the boom was mounted | worn with the rear boom apparatus in the boom spreading apparatus 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 drawings indicate parts having the same function, and repeated description in each drawing will be omitted as appropriate. In the following description, the boom spraying device for spraying the liquid agent will be described as an example, but the sprayed material is not limited to the liquid agent.

  As shown in FIG. 1, a boom spreading device 1 according to an embodiment of the present invention includes a riding-type traveling machine body 10. The traveling machine body 10 is equipped with a tank 11 in which the sprayed liquid agent is stored. A cockpit 12 is provided in front of the tank 11, and various operation switches including a handle 13 are provided around the cockpit 12. Further, the traveling machine body 10 is provided with an engine box 14 on which an engine (not shown) as a driving source is mounted at the front, and a pair of left and right front wheels 15 and rear wheels 16 that are rotationally driven by the engine. Yes.

  The traveling boom body 10 of the boom spreading device 1 is provided 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. Although the set height HL here is the uppermost position of the tank 11, it can be set to an appropriate height.

  The boom spraying device 1 performs the spraying operation by supplying the liquid agent stored in the tank 11 to one of the front boom device 20 and the rear boom device 30. When the front boom device 20 is selected, the boom is set at a low position and liquid spraying is performed, so that the present invention is applied to liquid spraying and herbicide spraying on crops with low ground clearance. On the other hand, when the rear boom device 30 is selected, the boom is set at a high position and the liquid spraying is performed, so that the present invention is applied to the liquid spraying on crops with a high ground clearance.

  In the illustrated example, the front boom device 20 is attached to the traveling machine body 10 via a lifting 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 a lifting device 31 that moves up and down above the height HL. The elevating devices 21 and 31 both have a known structure including parallel link mechanisms 21A and 31A and telescopic cylinders (electric cylinders or hydraulic cylinders) 21B and 31B. Further, the lifting device 31 to which the rear boom device 30 is attached is all provided above the frame of the traveling machine body 10.

  Such a boom spraying device 1 can set the boom height to 2 m or more by the rear boom device 30, but the traveling aircraft body 10 including the tank 11 regardless of the change in the liquid storage amount of the tank 11. The weight distribution is made so that the center of gravity is always between the front wheel shaft 15A and the rear wheel shaft 16B. Thereby, even when the boom is set at a high position, a stable spraying operation can be performed while traveling.

  Moreover, since the boom device that performs the spraying operation with the boom set at a high position is mounted on the rear side, it is possible to prevent the driver of the traveling machine body 10 from receiving the medicine sprayed at the high ground level. 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 20 </ b> S having a spraying range between the left and right wheels of the front wheel 15 and the rear wheel 16 in the traveling machine body 10. The left and right boom attaching / detaching portions 22 and 23 are detachably mounted with a boom 20L that is deployed on the left side and a boom 20R that is deployed on the right side.

  As described above, the front boom device 20 can raise and lower the boom (the center boom 20S and the 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 uses the center boom 20S as a spraying range between the left and right wheels, when spraying a crop with a low ground clearance, the front boom device 20 is sprayed in a state where the basket with the crops planted is straddled by the left and right wheels. be able to.

  When the front boom device 20 is used to carry out a spraying operation in a state of straddling a crop, the lifting device 31 of the rear boom device 30 is provided above the frame of the traveling machine body 10, thereby lifting the lifting device. It is possible to avoid the problem that 31 comes into contact with the crop under the frame. Further, by providing the lifting device 31 above the frame of the traveling machine body 10, the lifting device 31 can be arranged away from the ground or crops on the ground, so that the operation of the lifting device 31 due to dirt or contamination is suppressed. Thus, the maintenance management work can be simplified. Even when the lifting device 31 is in the lowermost state (the state shown in FIGS. 3 and 4), since all the components of the lifting device 31 are not below the frame, the lifting device 31 is in the lowermost state. 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. The rear boom device 30 is not provided with a boom having a nozzle 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 wheel 15 and the rear wheel 16 in the traveling machine body 10 is set as a spraying range.

  As described above, the rear boom device 30 can raise and lower the boom (the 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, for example, long-soil cultivation in which a vine of the above-ground part is wound around a support or a net. It is not possible to do so, and the boom is extended from the side of the row of crops to carry out the spreading work.

  When using the rear boom device 30, the left and right booms 20 </ b> L and 20 </ b> R attached to the front boom device 20 are detached from the boom attaching / detaching portions 22 and 23 and attached to the boom attaching / detaching portions 32 and 33 of the rear boom device 30. That is, the left and right booms 20L, 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 the stowed state in which the left and right booms 20L and 20R are folded in the boom spraying apparatus 1. FIG. FIG. 4 shows a state in which the left and right booms 20L and 20R are attached to the boom attaching / detaching portions 22 and 23 of the front boom device 20, and in this state, the boom attaching / detaching portions 22 and 23 are obliquely upward and sideways of the traveling machine body 10. The left and right booms 20L, 20R that are folded in and attached to the boom attaching / detaching portions 22, 23 are stored with their tips directed rearward in an obliquely upward state. At this time, the left and right booms 20 </ b> L and 20 </ b> R are respectively held by the folding holders 40 arranged near the upper side of the tank 11.

  FIG. 5 shows a state in which the left and right booms 20L and 20R are attached to the boom attaching / detaching portions 32 and 33 of the rear boom device 30. In this state, the boom attaching / detaching portions 32 and 33 are folded to the side of the traveling machine body 10 in a horizontal state. The left and right booms 20L, 20R attached to the boom attaching / detaching portions 32, 33 are stored with their tips directed forward. At this time, the left and right booms 20L and 20R are respectively held by the folding holding unit 40, and the folding holding unit 40 and the rear boom device 30 when the booms 20L and 20R are attached to the front boom device 20 are attached. The folding holding part 40 when the booms 20L and 20R are mounted is shared.

  As described above, the boom spreading device 1 according to the embodiment of the present invention shares the left and right booms 20L and 20R with the front boom device 20 and the rear boom device 30, thereby reducing the number of expensive booms to the left and right. One boom spraying device 1 that spreads herbicides that need to be sprayed by setting the boom at a very low position by dividing the roles of the front boom device 20 and the rear boom device 30 while suppressing it. It becomes possible to do in. Thereby, compared with a large tractor etc., an engine output can be made comparatively small and lightweight, but a multipurpose boom spraying apparatus can be realized at low cost. In addition, since the left and right booms 20L and 20R are shared and the boom fold holding part 40 is also shared, it is possible to improve the capacity of folding the boom.

  As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the scope of the present invention. Is included in the present invention. In addition, the above-described embodiments can be combined by utilizing each other's technology as long as there is no particular contradiction or problem in the purpose and configuration.

1: boom spreader,
10: traveling body, 11: tank, 12: cockpit, 13: steering wheel,
14: Engine box,
15: front wheel, 15A: front wheel shaft, 16: rear wheel, 16A: rear wheel shaft,
20: Front boom device, 30: Rear boom device, 21, 31: Lifting device,
22, 23, 32, 33: Boom attachment / detachment part,
40: Folding holding part,
21A, 31A: parallel link mechanism, 21B, 31B: telescopic cylinder,
HL: Set height

Claims (8)

A riding-type traveling aircraft equipped with a tank;
A front boom device mounted on the front end of the traveling machine body and having a boom height lower than a set height;
A rear boom device mounted on the rear end of the traveling machine body and having a boom height above the set height;
The rear boom device can set the boom height at a position higher than the uppermost position of the tank,
A boom spraying apparatus characterized in that the center of gravity of the traveling machine body including the tank is located between the front wheel axle and the rear wheel axle of the traveling machine body regardless of a change in the storage amount of the tank.   The boom spraying device according to claim 1, wherein the rear boom device is mounted via a lifting device that lifts and lowers the boom height above the set height. The tank is a liquid storage tank,
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 spreading device according to claim 2 or 3, wherein the lifting device to which the rear boom device is mounted is provided above the traveling machine body.   The boom spreading device according to any one of claims 1 to 4, wherein the front boom device includes a center boom having a spreading range between the left and right wheels of the traveling machine body.   The boom spreading device according to any one of claims 1 to 5, wherein the rear boom device has a spreading range outside the left and right wheels of the traveling machine body.   The boom spreading device according to any one of claims 1 to 6, wherein the front boom device and the rear boom device include a boom attaching / detaching portion that can share the boom.   8. The boom according to claim 7, wherein a boom folding holding portion when the boom is mounted on the front boom device and a boom folding holding portion when the boom is mounted on the rear boom device are shared. Spraying equipment.

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