JP7445535B2 - Granule sprayer - Google Patents

Description

The present invention relates to a granule spreading vehicle.

BACKGROUND ART Conventionally, a granule dispersing vehicle that spreads granules while self-propelled is known (see, for example, Patent Document 1). This granule spraying vehicle is a vehicle that can also function as a self-propelled boom sprayer, and can spray chemical solutions using a boom device (boom nozzle device). can. In this granule spraying vehicle, the driver's seat, the chemical tank that stores the chemical solution, and the engine room containing the engine and pump for distributing the chemical solution are arranged in this order from the front to the rear of the vehicle. .

The granule dispersing device includes a blower that blows air under pressure, and a granule scattering section that spreads granules using the air that is force-fed from the blower. The blower is placed in the engine room and driven by the engine placed in the engine room. Specifically, the driving force of the engine is generated by a pulley on the engine output shaft, a belt, a pulley on the electromagnetic clutch side, an electromagnetic clutch, a bevel gearbox that fixes the electromagnetic clutch to the input shaft and changes the power transmission direction by 90 degrees, and a bevel gearbox output shaft. is transmitted to the pulley, belt, and blower pulley. Further, the granule dispersion section is arranged in front of the driver's seat. The blower and the granule dispersing section are connected by a blow pipe extending in the longitudinal direction of the vehicle.

The boom device includes a center boom that is placed below the granule dispersion unit and extends in the left-right direction of the vehicle, and an open position in which the end of the boom is rotatably connected to the end of the center boom and is lined up in a straight line with the center boom. It includes a side boom that rotates with respect to the center boom and moves between a closed position and a closed position where it is folded to the side of the vehicle, and a plurality of spray nozzles that are provided on the center boom and the side booms and spray a chemical solution.

While the driver is driving, the chemical spraying pump is driven, allowing the chemical solution to be sprayed from multiple spray nozzles on the center boom and side booms that are lined up in a straight line, and the blower is also driven. As a result, air is forced into the granule dispersion section and the granules can be dispersed.

Patent No. 3871633

Here, in the above-mentioned cited document 1, the granule dispersion unit is arranged at the front of the vehicle, and the blower is arranged at the rear of the vehicle, so the air route by the air pipe is long, and it is desirable to reduce pressure loss. It is rare. In addition, the blower is placed in the engine room, which has many parts, and a bevel gearbox is placed in the engine room to change the direction of power transmission from the engine to the blower, so the positional relationship between the power transmission connection source and connection destination is In addition to having a low degree of freedom, a large number of parts such as pulleys and belts are required for power transmission, and a simpler configuration is required.

The present invention has been made to solve these problems, and it is possible to shorten the air blowing path and reduce pressure loss, and also has a high degree of freedom in the positional relationship between the power transmission connection source and connection destination. An object of the present invention is to provide a granule spraying vehicle that can reduce the number of parts and simplify the configuration.

The granule spreading vehicle (100) according to the present invention pumps air by rotating a driver's seat (9), a drive source (7) located behind the driver's seat (9), and an impeller (26). A granule dispersing device (3) provided with a blower (24) and a granule dispersing unit (25) that disperses the granules using the air force-fed from the blower (24), and a drive source (7). A granule dispersing vehicle (100) that spreads granules by a granule dispersing device (3) while self-propelled by a granule dispersing vehicle (100), the blower (24) and the granule dispersing unit (25) are operated from the driver's seat (9). It is located at the front of the vehicle and is characterized by transmitting power from a drive source (7) to an impeller (26) using a flexible shaft (36) that extends in the longitudinal direction of the vehicle.

According to such a granule dispersing vehicle (100), there is provided a blower (24) that pumps air by rotation of the impeller (26), and a granule dispersing section that sprays the granules using the air that is pumped from the blower (24). (25) are both placed in front of the vehicle from the driver's seat (9), so compared to the conventional technology where the blower was placed in the engine compartment behind the driver's seat, the air path is shorter and the pressure loss is reduced. is reduced. In addition, the power of the drive source (7) located at the rear of the vehicle from the driver's seat (9) is transmitted to the blade located at the front of the vehicle from the driver's seat (9) via a flexible shaft (36) extending in the longitudinal direction of the vehicle. In order to transmit power to the car (26), compared to the conventional technology in which a bevel gearbox is placed in the engine room and the direction of power transmission from the engine is changed and transmitted to the blower, the location of the power transmission connection source and connection destination is The degree of freedom in the relationship is increased, the number of parts such as pulleys and belts used for power transmission can be reduced, and the configuration is simplified.

Here, as a configuration that preferably achieves the above-mentioned effect, specifically, a configuration in which the drive source (7) is an engine can be mentioned.

Further, the granule spreading vehicle (100) includes a center boom (20) that is arranged in front of the vehicle than the granule spreading device (3) and extends in the left-right direction of the vehicle; A side boom (21) that is rotatably connected and moves between an open position where it is aligned in a straight line with the center boom (20) and a closed position where it is rotated relative to the center boom (20) and folded to the side of the vehicle. and a plurality of spray nozzles (23) provided on the center boom (20) and side booms (21) for spraying the chemical solution. Can spray both chemical and chemical solutions. Also, it is possible to spray only one or the other while driving.

As described above, according to the present invention, the air blowing path can be shortened to reduce pressure loss, and the positional relationship between the power transmission connection source and connection destination is high, and the number of parts is small, making it possible to simplify the configuration. We can provide granule spraying vehicles.

FIG. 1 is a perspective view of a granule dispersing vehicle according to an embodiment of the present invention, seen diagonally from the left front and from above. FIG. 2 is a right side view of the granule spreading vehicle shown in FIG. 1. FIG. FIG. 3 is an enlarged perspective view showing a power transmission mechanism from an engine to an electromagnetic clutch section arranged under a chemical liquid tank in FIGS. 1 and 2. FIG. It is a perspective view showing a power transmission mechanism from an electromagnetic clutch part to an air blower. FIG. 5 is a cross-sectional view showing an electromagnetic clutch portion to which the power transmission mechanism in FIG. 4 is connected. FIG. 5 is a sectional view showing an impeller portion to which the power transmission mechanism in FIG. 4 is connected.

Hereinafter, preferred embodiments of the granule dispersing vehicle according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view of a granule spraying vehicle according to an embodiment of the present invention, seen diagonally from the left front and above, FIG. 2 is a right side view of the granule dispersion vehicle, and FIG. FIG. 4 is an enlarged perspective view showing the power transmission mechanism from the engine to the electromagnetic clutch, FIG. 4 is a perspective view showing the power transmission mechanism from the electromagnetic clutch to the blower, and FIG. 5 is the electromagnetic clutch to which the power transmission mechanism is connected. FIG. 6 is a cross-sectional view showing the impeller portion to which the power transmission mechanism is connected.

In the granule spraying vehicle of this embodiment, a boom sprayer serving as a chemical solution dispersing vehicle is equipped with a granule dispersion device and also has a function of granule dispersion, and is hereinafter simply referred to as a boom sprayer. This boom sprayer sprays, for example, granules such as fertilizer while traveling in a field, and also sprays a chemical solution such as agricultural chemicals. In the following description, "front", "rear", "left", and "right" refer to directions with respect to the boom sprayer.

As shown in FIGS. 1 and 2, the boom sprayer 100 is self-propelled and includes a vehicle 1 that can run, a boom device 2 for spraying a chemical solution along the left and right direction of the vehicle in front of the vehicle 1, and a vehicle. A granule dispersing device 3 for dispersing granules in front of the granules 1 is provided.

The vehicle 1 includes a vehicle body frame 4 that is substantially rectangular in plan view and long in the longitudinal direction of the vehicle (see FIG. 2). A pair of front wheels 5 and a pair of rear wheels 6 are provided at the front and rear of the vehicle body frame 4 below both sides in the left-right direction of the vehicle. The front wheels 5 and the rear wheels 6 are rotated by an engine 7 (see FIG. 2) serving as a drive source. In this embodiment, the front wheels 5 and rear wheels 6 rotate because of four-wheel drive, but front wheel drive or rear wheel drive may be used.

A driver's seat 9 is provided on the front part of the vehicle body frame 4 to form a space where a driver is seated and to perform driving operations using a handle 8, granule spraying operations, chemical solution spraying operations, lever operations, etc. . The driver's seat 9 is covered from above by a roof 10. The roof 10 is supported by roof pillars 11 erected from the sides of the driver's seat 9 on both sides of the vehicle body frame 4 in the left-right direction of the vehicle. On the left side of the driver's seat 9, a step 12 extending downward is provided for climbing up and down from the driver's seat 9.

An engine room 13 is provided on the rear part of the vehicle body frame 4 to accommodate an engine 7, a chemical liquid pressure pump (not shown), and the like. The engine room 13 is covered by a bonnet (engine room cover) 14 that can be opened and closed. The bonnet 14 includes an upper portion that covers the engine compartment 13 from above, and side portions that cover the engine compartment 13 from the sides in the left-right direction of the vehicle, and is open to the rear. The side portions of the bonnet 14 are configured to cover the rear side of the engine compartment 13 from the front side, and expose the engine 7 and the like to the outside in the left-right direction of the vehicle (see FIG. 2).

A chemical liquid tank 15 for storing the chemical liquid sprayed from the boom device 2 is mounted between the driver's seat 9 and the engine room 13 on the vehicle body frame 4, and by recessing the upper center of the front end of the chemical liquid tank 15, The driver's seat 9 is formed. The chemical solution tank 15 is recessed forward from the middle of the rear part in the vertical direction to the lower part, and the recessed part 55 is a space communicating with the engine room 13. A part of the power transmission mechanism 33 (see FIG. 3) that transmits the power of is arranged.

At the front end of the vehicle body frame 4, four-bar link mechanisms 16 are arranged in pairs in the left-right direction of the vehicle so as to extend forward. The boom device 2 is supported by the vehicle body frame 4 via a four-bar linkage mechanism 16. When the four-bar link mechanism 16 is operated by the expansion and contraction of the electro-hydraulic cylinder 17 as an actuator, the front link 18 of the four-bar link mechanism 16 that extends in the vertical direction moves up and down (up and down), and moves in the horizontal direction as described later. The extending horizontal control frame 19 and center boom 20 move up and down.

The boom device 2 includes a horizontal control frame 19 that extends in the left-right direction of the vehicle and is fixed to the front link 18, and is arranged in parallel below the horizontal control frame 19 and is longer than the horizontal control frame 19 in the left-right direction of the vehicle. Additionally, a center boom 20 is supported so as to be swingable in a pendulum-like manner in the left-right direction of the vehicle with respect to the horizontal control frame 19 and becomes horizontal by horizontal control using gravity, and a pair of center booms rotatably connected to both ends of the center boom 20 It is equipped with a side boom 21.

A nozzle pipe 22 is attached to each of the center boom 20 and the side boom 21, and each nozzle pipe 22 is provided with a plurality of spray nozzles 23 for spraying a chemical solution along the longitudinal direction. When spraying the chemical solution, the side booms 21 are rotated from the closed position shown in the figure and unfolded to the open position in line with the center boom 20.

The chemical liquid pressure pump is driven by the engine 7 while the vehicle is running, and the chemical liquid in the chemical liquid tank 15 is sprayed downward from the spray nozzle 23 via the nozzle pipes 22 of the center boom 20 and the side booms 21. When the side boom 21 is not distributing chemical liquid, it is rotated to the illustrated closed position and folded, and is stored on the side of the vehicle body frame 4 in a diagonally upward rearward state.

The granule spraying device 3 is provided in front of the driver's seat 9 and in front of the handle 8. As shown in FIGS. 1 and 4, this granule dispersing device 3 includes a blower 24 and a granule dispersing section 25 that disperses granules using air forced from the blower 24. As shown in FIG. 4, the blower 24 pumps air by rotating an impeller 26. The granule dispersing unit 25 includes a granule tank 27 for accommodating granules at the top of the blower 24 , and uses the rotation of the impeller 26 of the blower 24 to send the granules in the granule tank 27 through the feed pipe 28 . and spray it forward from the spray port 29 at the tip (see also Figures 1 and 2).

As shown in FIGS. 1 and 2, the granule tank 27 is disposed in front of the handle 8, and a tank lid 30 is provided on the top thereof to open and close a granule inlet for introducing granules into the tank. is provided.

The blower 24 is disposed between the pair of four-bar link mechanisms 16, 16 in front of the driver's seat floor, and the back surface of the blower 24 is fixed to the front end of the vehicle body frame 4 by bolts.

As shown in FIG. 3, the power of the engine 7 is transmitted to a V-pulley 31 fixed to the output shaft of the engine 7, and a V-belt 32 wrapped around the V-pulley 31, and the power is transmitted as shown in FIGS. 3 and 4. It is transmitted to the impeller 26 via the mechanism 33. The power transmission mechanism 33 includes an electromagnetic clutch section 34 that is a connection source, an impeller section 35 that is a connection destination, and extends in the longitudinal direction of the vehicle, as shown in FIG. A flexible shaft 36 that connects the.

As shown in FIGS. 3 to 5, the electromagnetic clutch unit 34 connects and disconnects the V-pulley 37 around which the V-belt 32 (see FIG. 3) is wound, and the power transmitted to the V-pulley 37. An electromagnetic clutch 38, as shown in FIG. Ball bearings 40, 40 and a ball bearing fixing boss 42 which is arranged closer to the flexible shaft 36 than the V pulley 37 and rotatably supports the shaft 39 on the electromagnetic clutch side via the ball bearings 41, 41 (see FIG. 4). ), and the shaft 39 on the electromagnetic clutch side and one end of the flexible shaft 36 are connected via a coupling fitting 43 on the electromagnetic clutch side. The ball bearings 40 and 41 are positioned in the axial direction by a retaining ring 44 for ball bearing positioning, and the shaft 39 on the electromagnetic clutch side is positioned in the axial direction by a retaining ring 45 for shaft positioning.

As shown in FIG. 6, the impeller section 35 shown in FIG. The shaft 47 on the impeller side and the other end of the flexible shaft 36 are connected to the shaft 47 on the impeller side. They are connected via a connection fitting 50. The ball bearing 48 is positioned in the axial direction by a ball bearing positioning retaining ring 51, and the impeller-side shaft 47 is positioned in the axial direction by a shaft positioning retaining ring 52.

According to the boom sprayer 100 configured in this way, the driver ascends the step 12, takes a seat in the driver's seat 9, drives the engine 7, and runs the boom sprayer 100, as shown in FIGS. 1 and 2. At the same time, the chemical liquid pressure feeding pump is driven to spray the chemical liquid downward from the spray nozzles 23 of the center boom 20 and the side booms 21 located in the open position.

Further, as shown in FIG. 3, the power of the engine 7 is transmitted through a V-pulley 31, a V-belt 32, an electromagnetic clutch section 34 that can transmit power by energization, and a flexible shaft 36, as shown in FIG. By transmitting the information to the impeller 26 of the impeller unit 35 and rotating the impeller 26, the granules in the granule tank 27 are sprayed forward (forward) from the spray port 29.

In such a boom sprayer 100, as shown in FIGS. 1 and 2, the blower 24 and the granule spraying section 25 that constitute the granule spraying device 3 are both arranged in front of the vehicle from the driver's seat 9. This makes it possible to shorten the air blowing path and reduce pressure loss compared to conventional technology in which the blower is located in the engine room behind the driver's seat. In addition, as shown in FIG. 4, the power of the engine 7, which is located behind the driver's seat 9, is transmitted to the blower 24, which is located in front of the driver's seat 9, through a flexible shaft 36 that extends in the longitudinal direction of the vehicle. In order to transmit power to the impeller 26, compared to the conventional technology in which a bevel gear box is disposed in the engine room and the direction of power transmission from the engine is changed and transmitted to the blower, the electromagnetic clutch section 34, which is the connection source for power transmission, is The degree of freedom in the positional relationship of the impeller portion 35 to be connected can be increased, and the number of parts such as pulleys and belts used for power transmission can be reduced, and the configuration can be simplified.

Moreover, according to the boom sprayer 100, both granules and chemical solutions can be sprayed while traveling. Also, it is possible to spray only one or the other while driving.

In addition, for example, by using granules as fertilizer and chemical solution as pesticide, the pesticide can be sprayed downward and the fertilizer can be sprayed forward. This can prevent the dissolution of pesticides and prevent chemical damage.

Although the present invention has been specifically described above based on the embodiments thereof, the present invention is not limited to the above embodiments. For example, in the above embodiments, the driving source is the engine 7, which is particularly suitable. However, it may also be a motor or the like.

Further, in the above embodiment, application to the boom sprayer 100 is described as being particularly suitable, but it is applicable to all self-propelled vehicles (granule spraying vehicles) equipped with a granule spraying device that sprays granules. can be applied.

2... Boom device, 3... Granule spraying device, 7... Engine, 9... Driver's seat, 20... Center boom, 21... Side boom, 23... Spray nozzle, 24... Air blower, 25... Granule spraying section, 26... Vane Car, 36...Flexible shaft, 100...Boom sprayer (granule spreading vehicle).

Claims (3)

A driver's seat (9), a drive source (7) located behind the driver's seat (9), a blower (24) that pumps air by rotation of an impeller (26), and the blower (24). A granule dispersing device (3) is provided with a granule dispersing section (25) for dispersing granules using force-fed air; A granule scattering vehicle (100) for dispersing the granules by a dispersing device (3),
The impeller (26), the blower (24), and the granule dispersion section (25) are arranged in front of the vehicle from the driver's seat (9),
A granule scattering vehicle (100) characterized in that the power of the drive source (7) is transmitted to the impeller (26) using a flexible shaft (36) extending in the longitudinal direction of the vehicle. The granule spreading vehicle (100) according to claim 1, wherein the drive source (7) is an engine. The granule spreading vehicle (100) includes:
a center boom (20) arranged in front of the vehicle from the granule spraying device (3) and extending in the left-right direction of the vehicle;
The end thereof is rotatably connected to the end of the center boom (20), and the open position is aligned with the center boom (20) in a straight line, and the end thereof is rotated relative to the center boom (20) to the vehicle side. a side boom (21) that moves between a closed position and a closed position where it is folded toward the side;
A boom sprayer comprising a boom device (2) having a plurality of spray nozzles (23) provided on the center boom (20) and the side booms (21) for spraying a chemical solution. The granule spreading vehicle (100) according to 1 or 2.

Images