JP2024087568A - Electric Sprayer - Google Patents

Abstract

To provide an electrically-driven spraying machine that facilitates maintenance of an electric motor and a battery without lengthening an entire length of a machine body.SOLUTION: There is provided an electrically-driven spraying machine, having a steering handle 32 erected in a front case 31 in the front part of a travelling vehicle body 1. A transmission 4 is mounted in the center of the front and back of the travelling vehicle body 1, and a prime mover part 5 is composed above it, in which an electric motor 2 and a battery 3 are mounted. A driving seat 7 is provided above a prime mover cover 6 for covering the prime mover part 5, and a chemical solution tank 8 is mounted on the rear side of the prime mover cover 6. The prime mover part 5 can be opened by removing the driving seat 7 and the prime mover cover 6.SELECTED DRAWING: Figure 1

Description

The present invention relates to a spraying machine that runs on the power of an electric motor and sprays pesticides on crops in a field.

Tractors described in JP 2017-24710 A and JP 2021-957 A are examples of agricultural machinery that performs agricultural work in fields and is driven by an electric motor instead of an engine.

JP 2017-24710 A JP 2021-957 A

The electric work machine is a tractor that travels through farm fields to carry out work, but its structure is such that instead of a conventional engine, an electric motor and battery are installed inside the bonnet at the front of the vehicle body, making the overall length of the machine longer than before, making it difficult to make small turns in narrow farm fields.

The objective of the present invention is to create a spraying machine that is easy to maintain the electric motor and battery without increasing the overall length of the machine.

The above problem of the present invention is solved by the following technical means.

The invention of claim 1 is a spraying machine characterized in that a steering handle 32 is erected on a front case 31 at the front of a traveling body 1, a transmission 4 is mounted in the center of the front and rear of the traveling body 1, and a driving unit 5 is formed with an electric motor 2 and a battery 3 attached to the top of the transmission 4, a driver's seat 7 is provided on a driving cover 6 that covers the driving unit 5, a chemical tank 8 is mounted on the rear side of the driving cover 6, and the driver's seat 7 and driving cover 6 can be removed to release the driving unit 5.

The invention of claim 2 is a spraying machine as described in claim 1, characterized in that a rail 13 is provided from the driving cover 6 to the chemical tank 8, and the driver's seat 7 is moved along the rail 13 together with the driving cover 6 to the chemical tank 8, thereby releasing the driving part 5.

The invention of claim 3 is a spraying machine as described in claim 1, in which power is transmitted from the electric motor 2 via the transmission case 9 in front of the transmission 4, and from the transmission 4 to the front and rear wheels 9, 10 on the bottom of the traveling body 1, and the power is transmitted to the pest control pump 12 mounted on the rear of the traveling body 1 by the PTO shaft 11 protruding behind the transmission 4.

The invention of claim 4 is a spraying work machine as described in claim 1, in which the spraying boom 15 is raised and lowered by a lifter 14 provided at the front of the traveling body 1.

In the invention of claim 1, the electric sprayer has a front case 31 with a steering mechanism installed at the front of the traveling body 1, a driving unit 5 installed at the rear of the front case 31, and a chemical tank 8 installed at the rear of the front case 31. However, the front case 31 only has the steering mechanism installed and is not long from front to rear. The driving unit 5 is formed by mounting the electric motor 2 and battery 3 on top of the transmission 4 installed at the center of the traveling body 1 and covering it with a driving cover 6. The driver's seat 7 is provided on the driving cover 6, making the boarding and driving space of the work vehicle relatively narrow, and the chemical tank 8 is installed at the rear of the work vehicle, so the overall length of the spraying work machine is not too long. In addition, by removing the driver's seat 7 and driving cover 6 to release the driving unit 5, maintenance of the electric motor 2 and battery 3 can be easily performed from above.

The invention of claim 2 allows the driving unit 5 to be released by a simple operation of moving the cockpit 7 and driving cover 6 onto the chemical tank 8 along the rails 13 provided on the chemical tank 8.

In the invention of claim 3, power is transmitted from the upper electric motor 2 to the lower transmission 4 through the transmission case 9 from top to bottom, and then from the transmission 4 to the front and rear wheels 9, 10, and then to the pest control pump 12 through the PTO shaft 11. This means that the power transmission mechanism fits within the narrow area of the running body 1, and the machine does not become large, providing good maneuverability in narrow fields.

In the invention of claim 4, the spray boom 15 is raised and lowered by a lifter 14 provided at the front of the traveling vehicle body 1, and the front-to-rear weight balance with the chemical tank 8 is good, resulting in stable traveling.

FIG. 1 is a right sectional view showing an example of the configuration of a spraying work machine according to an embodiment of the present invention. FIG. 2 is a perspective view of a spraying machine provided with an exposure guard. FIG. 3 is a perspective view of the front body of the spraying machine.

Below, the form (embodiment) for carrying out the present invention will be described in detail with reference to the drawings.

The present invention is not limited to the contents described in the following embodiments. Furthermore, the components described below include those that a person skilled in the art can easily imagine and those that are substantially the same. Furthermore, the configurations described below can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the configurations can be made without departing from the spirit of the present invention.

Figure 1 is a right-side cross-sectional view showing an example of the configuration of a drug spraying vehicle according to an embodiment of the present invention.

The pesticide spraying vehicle A, which is an example of a work vehicle according to this embodiment, is a work vehicle in which an operator such as a worker rides on the traveling vehicle body 1 and drives and sprays pesticides on a field. As shown in Figures 1 and 2, the pesticide spraying vehicle A is composed of the traveling vehicle body 1, a pesticide tank 8, and a spraying device B, such as a front boom 19 and a side boom 20, for spraying the pesticide supplied from the pesticide tank 8 on the field.

In this embodiment, the traveling direction of the drug spraying vehicle A is along the fore-and-aft direction of the traveling vehicle body 1, and is the direction from the driver's seat 7 toward the steering handle 32 when the drug spraying vehicle A is traveling straight.

The width direction or left-right direction of the traveling vehicle body 1 is a direction that is horizontally perpendicular to the traveling direction. The up-down direction of the traveling vehicle body 1 is a direction that is vertically perpendicular to the traveling direction.

The traveling vehicle body 1 includes a driver's seat 7, a steering wheel 32, and front and rear wheels 9 as examples of wheels.

A front case 31 is located at the front of the traveling vehicle body 1, and a driver's seat 7 is provided behind the front case 31. The driver's seat 7 is a seat where the operator sits when driving and operating the pesticide spraying vehicle A.

Operating units for controlling operations such as opening and closing the spraying device and spraying the pesticide are located at appropriate positions around the cockpit 7.

The steering handle 23 is turned by the operator to steer at least the left and right front wheels 9 or the rear wheels 10, thereby changing the direction of travel of the drug spraying vehicle A. The front wheels 9 are steered by turning at least the steering handle 32.

The front boom 19 is used to spray pesticides on the front side of the pesticide spraying vehicle A. As shown in Figures 1 to 4, the front boom 19 is provided on the front side of the traveling vehicle body 1 and extends horizontally in the vehicle width direction.

The spraying device B is supported by a lift platform 30 and a lifter 14 in front of the traveling vehicle body 1 so that it can be raised and lowered. The lift platform 30 and the lifter 14 support the spraying device B and enable it to perform lifting and rolling operations, as well as provide the driving force for each of the operations of deployment, storage, and up and down movement.

With the above configuration, the spraying device B is configured to be switchable between a fully deployed position and a fully stored position. In the fully deployed position, the spraying device B can spray pesticide over a wide area in front and to the left and right sides of the pesticide spraying vehicle A. In the stored position, the side boom 20 can be prevented from coming into contact with external obstacles.

In addition, boom receivers 23 are provided on each of the left and right sides of the traveling vehicle body 1 to receive the stored side booms 20.

The side booms 20 are attached to both the left and right sides of the center boom 19 so that they can be switched between a spraying position extending in the width direction of the traveling body 1 and a storage position along both the left and right sides of the traveling body 1.

When in the stowed position, the side boom 20 is supported by boom receivers 23 located on both the left and right sides of the rear of the traveling body 1. The side boom 20 is equipped with multiple spray nozzles arranged at intervals to spray the medicine in a mist.

This pesticide spraying vehicle A has a slide boom with an extendable side boom 20, and during operation the length of the side boom 20 can be extended to spray pesticides over a wide area.

As shown in Figures 1 and 2, the vehicle body 1 has front wheels 9 and rear wheels 10 supported by front support legs 16 and rear support legs 17, respectively, and travels by driving the front wheels 9 and rear wheels 10 via power transmission mechanisms built into the front support legs 16 and rear support legs 17 via a transmission 4 attached to the center of the front and rear of the vehicle body.

The transmission 4 receives power from the electric motor 2 attached to the upper machine frame of the traveling vehicle body 1 through a transmission case 28 installed in front, changes the speed and outputs the power, and supplies electricity to the electric motor 2 through a battery 3 mounted behind the electric motor 2.

The transmission 4 is attached to the traveling vehicle body 1, and the electric motor 2 and battery 3 are attached to the upper frame of the transmission 4. A transmission case 28 is provided in front of the transmission 4 to form the driving unit 5 that transmits power from the electric motor 2 to the transmission 4.

The top and periphery of this motor unit 5 are covered by a motor cover 6, and the cockpit 7 is attached to the motor cover 6.

The chemical tank 8 is mounted on the traveling vehicle body 1 behind the motor unit 5, and rails 13 are provided on the driver's seat 7 side of this chemical tank 8. The driver's seat 7, together with the motor cover 6, slides up along the rails 13 onto the chemical tank 8, and the driver's seat 7 is rotated in reverse on the pivot shaft 7a, allowing the space above the motor unit 5 to be widely opened. This makes it possible to pull the electric motor 2 and battery 3 out of the motor unit 5.

A front case 31 that houses the steering mechanism is provided in front of the driving unit 5, and a steering handle 32 is provided.

The transmission 4 also has a PTO shaft 11 at the rear, which drives a pest control pump 12 attached to the rear end of the traveling vehicle body 1. A carrier 34 is provided on top of the pest control pump 12.

A lifter 14 is provided at the front of the traveling body 1, and a lift platform 30 that can be raised and lowered is provided with a fertilizer spreader 21 and a front boom 19 and a side boom 20 that spray chemicals. The lifter 14 raises and lowers a slider 38 that slides between left and right slide supports 35, 35 using a hydraulic cylinder 40, and the lift platform 30 is attached to a wire 35 wound around a pulley 36 of the slider 38.

Figure 2 shows a configuration with an atomic bomb protection guard surrounding the cockpit 7, with a roof 26 that covers the top of the cockpit 7 and is supported by a roof support 22 and front struts 24, 25. The roof 26 can be pulled out forward, and transparent vinyl sheets are hung from the left and right sides of the roof 26 to protect the operator sitting in the cockpit 7 from radiation. The vinyl sheet can be rolled up and stored on the roof 26.

In addition, boom receivers 23 that support the side booms 20 are provided on the left and right sides of the lobes 22, and turn signals are attached. The lobes 22 is wider than the pest control pump 12, and can also be tilted backwards and fixed in place.

REFERENCE SIGNS LIST 1 Traveling vehicle body 2 Electric motor 3 Battery 4 Transmission 5 Power unit 6 Power cover 7 Driver's seat 8 Chemical tank 9 Front wheel 10 Front and rear wheels 11 PTO shaft 12 Pest control pump 14 Lifter 15 Spraying boom 28 Transmission case

Claims (4)

This electric sprayer is characterized in that it has a steering handle (32) erected on the front case (31) at the front of the traveling body (1), a transmission (4) mounted in the center of the front and rear of the traveling body (1) and a driving unit (5) with an electric motor (2) and battery (3) mounted on top of it, a driver's seat (7) provided on a driving cover (6) that covers the driving unit (5), a chemical tank (8) mounted on the rear side of the driving cover (6), and the driver's seat (7) and driving cover (6) can be removed to release the driving unit (5). The electric sprayer according to claim 1, characterized in that a rail (13) is provided from the driving cover (6) to the chemical tank (8), and the driver's seat (7) is moved along the rail (13) together with the driving cover (6) onto the chemical tank (8) to release the driving part (5). The electric sprayer according to claim 1, in which power is transmitted from the electric motor (2) from top to bottom via a transmission case (28) in front of the transmission (4), the power is transmitted from the transmission (4) to the front and rear wheels (9, 10) on the lower part of the traveling body (1), and the power is transmitted to a pest control pump (12) mounted on the rear of the traveling body (1) via a PTO shaft (11) protruding behind the transmission (4). The electric sprayer according to claim 1, in which the spray boom (15) is raised and lowered by a lifter (14) provided at the front of the traveling body (1).

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