Riding electric rice transplanter

Abstract

To provide a riding electric rice transplanter mounted with a battery that allows long-time seedling transplanting work to be performed by arranging a heavy battery at a stable position of a travelling vehicle body, and preventing heat generation of the battery and a motor.SOLUTION: In a riding electric rice transplanter in which an operation device 9 and an operation seat 5 are provided to a travelling vehicle body 3 that is steered by steering front wheels 1,1 and travels by rear wheels 2,2 driven by axle driving motors 2M,2M, a seedling transplanting device 4 is mounted in the back, and fertilizer applicators 7,7 are mounted on the right and left side parts of the travelling vehicle body 3, a battery 6 is arranged and mounted on the travelling vehicle body 3 between the operation seat 5 and the seedling transplanting device 4; a cooling device 10 is provided below the operation seat 5; ambient air taken in by the cooling device 10 is sent to the battery 6, the axle driving motor 2M, and the fertilizer applicators 7,7 to cool them.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an electric riding rice transplanter equipped with a seedling transplanter for transplanting seedlings in a field, which runs by driving a motor with battery power. [Background technology]

[0002] A riding rice transplanter that transplants seedlings while traveling within a field is described in JP 2020-89298 A, and a riding rice transplanter that transplants seedlings and applies fertilizer at the same time is described in JP 6497379 A. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-89298 [Patent Document 2] Patent No. 6497379 Summary of the Invention [Problem to be solved by the invention]

[0004] The electric rice transplanter is equipped with a battery that supplies power to the motor that drives the front wheels and a battery that supplies power to the motor that drives the rear wheels, but no means for cooling the batteries that generate heat during use is described. Also, the fertilizer-applying riding rice transplanter is an engine-driven rice transplanter that supplies fertilizer to the seedling transplanting device from fertilizer tanks installed on the left and right sides of the traveling body.

[0005] The batteries used in electric rice transplanters are heavy and must be mounted in a stable position on the vehicle body, but the batteries can deteriorate due to heat generation during use, reducing their recharging ability and posing a risk of fire due to overheating.In addition, overheating of the motor used can cause coil burnout and seizure of parts.

[0006] To provide an electric riding rice transplanter equipped with a battery, which can perform seedling transplanting work for a long time by arranging a heavy battery in a stable position on a traveling body to prevent overheating of the battery and motor. [Means for solving the problem]

[0007] The above-mentioned object of the present invention is achieved by the following technical means.

[0008] The invention of claim 1 is an electric riding rice transplanter having a steering device 9 and a cockpit 5 mounted on a running body 3 which is steered by front steering wheels 1,1 and travels on rear wheels 2,2 driven by axle drive motors 2M,2M, a seedling transplanting device 4 attached to the rear, and fertilizer applicators 7,7 mounted on the left and right sides of the running body 3, wherein a battery 6 is mounted on the running body 3 between the cockpit 5 and the seedling transplanting device 4, a cooling device 10 is provided below the cockpit 5, and the outside air taken in by the cooling device 10 is blown onto the battery 6, axle drive motor 2M, and fertilizer applicators 7,7 for cooling.

[0009] The invention of claim 2 is the electric rice transplanter according to claim 1, characterized in that an airflow switching valve 11 is provided to distribute and adjust the airflow from the cooling device 10 to the battery 6 and the fertilizer applicators 7,7.

[0010] The invention of claim 3 is an electric rice transplanter as described in claim 2, characterized in that a barrier wall 10B is provided in front of the seat section 3B of the running body 3 where the driver's seat 5 is located, and air intake walls 10A are provided on the left and right sides of the barrier wall 10B to introduce outside air into the cooling device 10, and an air supply switching valve 11 is provided at the rear of the cooling device 10. [Effects of the Invention]

[0011] In the invention of claim 1, the operator sits in the driver's seat 5 of the traveling vehicle body 3 and operates the control device 9 to travel and drive the seedling transplanting device 4 to transplant the seedlings. Since the battery 6, which is a heavy object, is mounted on the traveling vehicle body 3 between the driver's seat 5 and the seedling transplanting device 4, the center of gravity is approximately in the center of the front and rear of the traveling vehicle body 3 and the seedling transplanting device 4, which gives the vehicle a good weight balance as a whole, allowing it to travel stably on soft and unstable fields. The battery 6 and axle drive motor 2M are effectively cooled by the cooling device 10 installed below the driver's seat 5, and the fertilizer from the fertilizer applicators 7,7 is dried and supplied to the seedlings for transplanting, making it possible to carry out transplanting work for long periods of time in humid fields.

[0012] In the invention of claim 2, the volume of cooling air from the cooling device 10 is adjusted by the air blowing switching valve 11, and an appropriate amount of air is sent not only to the battery 6 but also to the fertilizer applicators 7, 7, thereby drying the fertilizer and ensuring good fertilizer supply.

[0013] In the invention of claim 3, the shielding wall 10B of the seat section 3B below the cockpit 5 prevents drafts from reaching the feet of the operator, and outside air flows into the cooling device 10 through the intake walls 10A provided on the left and right sides of the seat section 3B, so the operator sitting in the cockpit 5 can work comfortably without being exposed to the intake air. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a schematic right side view of an electric riding rice transplanter according to an embodiment of the present invention. FIG. [Figure 2] FIG. 2 is a schematic plan view of the electric riding rice transplanter. [Figure 3] FIG. 2 is a plan view of a battery mounting portion of the vehicle body. [Figure 4] FIG. 2 is an enlarged plan view of the cooling device and the battery. [Figure 5] FIG. 4 is a partially enlarged side cross-sectional view of the battery mounting portion. [Figure 6] FIG. [Figure 7] FIG. 2 is a plan view of the battery mounting plate. [Figure 8] FIG. [Figure 9] FIG. 10 is a right side view of a vehicle body according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0016] As shown in Figures 1 and 2, the vehicle body 3 is formed in a stepped shape from front to rear in a side view, with a step section 3A, a seat section 3B, and a battery storage section 3C. The left and right front wheels 1, 1 located below the step section 3A are steered by tilting them left and right with a steering handle 9, and the left and right rear wheels 2, 2 driven by axle drive motors 2M, 2M are driven to travel.

[0017] A handle post 8 with a steering handle 9 erected thereon is provided in the center of the left and right of the step section 3A of the running body 3, a driver's seat 5 is provided on the raised seat section 3B in the center of the front and rear, a battery 6 is placed below the rearmost battery storage section 3C, fertilizer applicators 7, 7 are placed on the left and right sides of the battery storage section 3C, and a seedling transplanting device 4 is attached to the rear of the battery storage section 3C in a manner that allows it to be raised and lowered.

[0018] The front of the seat section 3B, which rises from the step section 3A, is blocked by a barrier wall 10B to prevent air from passing through, and the left and right sloping sides are provided as air intake walls 10A with slits that allow air to pass through. The cockpit 5 is located on the top, and a cooling device 10 is mounted on the body frame below, with battery control equipment 12 (Figure 3) mounted on the left and right sides. The cooling device 10 is made up of an electric fan, a radiator, a fan, etc., and draws in outside air and blows it out, or cools the outside air and blows out cool air.

[0019] Therefore, the outside air drawn in by the cooling device 10 does not pass through the front shield wall 10B but flows through the side intake wall 10A, so it does not hit the feet of the operator sitting in the cockpit 5.

[0020] The outlet of the cooling device 10 is provided with an airflow switching valve 11, which forms a central port that blows out around the battery 6 and left and right outlets that face the left and right fertilizer applicators 7, each with a mesh shutter, and by opening and closing this shutter the amount of air blown out to the battery 6 and the left and right fertilizer applicators 7, 7 can be adjusted, allowing air to be blown onto the battery 6 or to the fertilizer applicators 7, 7 that are likely to become clogged with fertilizer. In addition, by making the shutter mesh, even when closed it is still possible to blow out a small amount of air for cooling, and air is also blown into the battery control device 12 for cooling.

[0021] As shown in FIG. 5, the battery storage section 3C has a support base 15 provided on the traveling vehicle body 3, and a mounting plate 17 for mounting the battery 6 on a receiving plate 16 of the support base 15 is placed on vibration-isolating rubber 18 and fixed.

[0022] As shown in FIG. 7, the mounting plate 17 is configured so that the battery 6 is sandwiched between left and right mounting plates 17L, 17R via packing 19, and is placed and fixed on vibration-isolating rubber 18 provided on the receiving plate 16 in FIG.

[0023] As shown in Figure 8, the running vehicle body 3 can be divided into a seat section 3B and a battery storage section 3C in the center, and the left and right sides can be raised to make the interior openable, allowing the cooling device 10 and battery 6 to be removed and inspected and maintained after removing the cockpit 5.

[0024] Furthermore, as shown in FIG. 9, if the battery storage section 3C is raised rearward to make the interior openable, maintenance of the battery 6 and its surroundings can be performed without removing the cockpit 5. [Explanation of symbols]

[0025] 1 front wheel 2 Rear wheels 1,2 1M axle drive motor 2M axle drive motor 3 Running vehicle 4 Seedling transplant device 5. Cockpit 6 Battery 7 Fertilizer 9 Controls 10 Cooling device 10A Intake wall 10B Shielding wall 11. Air supply switching valve

Claims

1. This electric riding rice transplanter is characterized in that a steering device (9) and a cockpit (5) are provided on a traveling body (3) that is steered by steering front wheels (1,1) and travels on rear wheels (2,2) driven by axle drive motors (2M,2M), a seedling transplanting device (4) is attached to the rear, and fertilizer applicators (7,7) are mounted on the left and right sides of the traveling body (3), a battery (6) is disposed and mounted on the traveling body (3) between the cockpit (5) and the seedling transplanting device (4), a cooling device (10) is provided below the cockpit (5), and outside air taken in by the cooling device (10) is blown onto the battery (6), axle drive motors (2M,2M), and fertilizer applicators (7,7) to cool them.

2. 2. The electric rice transplanter according to claim 1, further comprising an airflow switching valve (11) for adjusting the distribution of airflow from the cooling device (10) to the battery (6) and the fertilizer applicator (7, 7).

3. The electric riding rice transplanter according to claim 2, characterized in that a barrier wall (10B) is provided in front of the seat section (3B) of the running body (3) where the driver's seat (5) is provided, and air intake walls (10A) for introducing outside air into the cooling device (10) are provided on the left and right sides of the barrier wall (10B), and an air supply switching valve (11) is provided at the rear of the cooling device (10).

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