Electric transplantation work vehicle

Abstract

To provide an electric transplantation work vehicle capable of maintaining a weight balance even when an operator is not seated.SOLUTION: An electric transplantation work vehicle according to an aspect of an embodiment includes a seat frame structure in a front side of a travel vehicle body. The electric transplantation work vehicle includes: a seat provided in an upper part of the seat frame structure so as to face rearward with respect to a travel direction; an electric motor provided in a lower side of the seat frame structure; and a battery provided above the electric motor and for supplying electric power to the electric motor. In the electric transplantation work vehicle, the battery can be replaced when the seat is inclined.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an electric transplanting vehicle. [Background technology]

[0002] Conventionally, there is known a paddy field working machine that has a battery located under the seat, and when the engine is running, electricity generated by a generator is stored in the battery, and the battery supplies power to an electric working motor (see, for example, Patent Document 1).

[0003] In the conventional invention, the electric power generated by the engine is used to power the electric motor for work. The electric motor for work is located at the rear of the vehicle body and is a motor dedicated to the work equipment. The battery is located below the seat, but is not used to balance the weight at the front, but is located in the center of the vehicle body. In the conventional invention, the driving power is supplied from the engine, and the weight balance is achieved by the engine. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-173277 Summary of the Invention [Problem to be solved by the invention]

[0005] In conventional inventions, the operator sits in the seat at all times, regardless of whether the vehicle is working or not (driving). However, in electric transplant work vehicles, the operator sits in the seat only when working, and when not working, the operator gets out of the seat and operates the steering wheel from the rear of the vehicle. Therefore, there has been a demand for an electric transplant work vehicle that can maintain weight balance even when the operator is not sitting in it.

[0006] The present invention has been made in view of the above, and has as its object to provide an electric transplanting work vehicle that can maintain weight balance even when a worker is not seated. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems and achieve the objectives, the electric transplanting work vehicle (1) according to the embodiment is an electric transplanting work vehicle (1) having a seat frame structure on the front side of the running body (2), and is provided with a seat (30) arranged on the upper part of the seat frame structure (31) facing rearward relative to the direction of travel, an electric motor (4) arranged on the lower side of the seat frame structure (31), and a battery (10) arranged above the electric motor (4) and supplying power to the electric motor (4), and the battery (10) can be replaced by tilting the seat (30). [Effects of the Invention]

[0008] According to the charging system of the embodiment, the weight balance can be achieved even if the operator is not seated. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing the overall configuration of an electric transplanting vehicle according to an embodiment. [Figure 2] FIG. 2 is a left side view showing the overall configuration of the electric transplanting vehicle according to the embodiment. [Figure 3] FIG. 3 is a plan view showing the overall configuration of the electric transplanting vehicle according to the embodiment. [Figure 4] FIG. 4 is an enlarged perspective view of the electric transplanting vehicle according to the embodiment. [Figure 5] Figure 5 is an explanatory diagram of mulch vinyl. [Figure 6] FIG. 6 is an explanatory diagram of a ridge detection method. [Figure 7] FIG. 7 is an explanatory diagram of a ridge detection method. [Figure 8] FIG. 8 is an explanatory diagram of a method for moving the ridges. [Figure 9] FIG. 9 is an explanatory diagram of a method for moving ridges. [Figure 10] FIG. 10 is an explanatory diagram of a cartridge for supplying seedlings. [Figure 11] FIG. 11 is an explanatory diagram of a cartridge for supplying seedlings. [Figure 12] FIG. 12 is an explanatory diagram of a cartridge for supplying seedlings. [Figure 13] FIG. 13 is an explanatory diagram of an electric transplanting vehicle that can be used as both a transplanter and a weeder. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the transplanter disclosed in the present application will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the following embodiment.

[0011] <Electric transplanting vehicle> An electric transplanting vehicle 1 according to an embodiment will be described with reference to Figs. 1 to 4. Fig. 1 is a perspective view showing the overall configuration of the electric transplanting vehicle according to an embodiment. Fig. 2 is a left side view showing the overall configuration of the electric transplanting vehicle according to an embodiment. Fig. 3 is a plan view showing the overall configuration of the electric transplanting vehicle according to an embodiment. Fig. 4 is an enlarged perspective view of the electric transplanting vehicle according to an embodiment.

[0012] In the following description, the electric transplanting work vehicle 1 and the traveling body 2 (described later) may be referred to as the "machine body." The side where the control handle 3 is located is referred to as the rear, and the opposite side, i.e., the side where the electric motor 4 is located, is referred to as the front. The right-hand side facing the front of the machine body is referred to as the right, and the left-hand side is referred to as the left.

[0013] The electric transplanting work vehicle 1 is equipped with a running body 2 that allows the machine to travel forward, a control handle 3 for walking control provided at the rear of the running body 2, a planting section 5 for planting seedlings in the field, and a table 6 for temporarily storing seedlings (crops) for transplanting and supplying the seedlings stored in the planting section 5.

[0014] The traveling vehicle body 2 is equipped with an electric motor 4, rear wheels 7 which are a pair of left and right drive wheels that are driven to rotate by the power transmitted from the electric motor 4, and a pair of left and right front wheels 8 that are supported so as to be able to roll freely in front of the rear wheels 7. A battery 10 that supplies power to the electric motor 4 is provided above the electric motor 4.

[0015] A travel transmission case 9, which is a transmission case, is disposed behind the electric motor 4. The travel transmission case 9 has a case portion (not shown) that extends from its left side to the left of the electric motor 4, and the case portion is connected to the shaft on the left side of the electric motor 4. The travel vehicle body 2 is configured so that the output shaft of the electric motor 4 fits into the case portion and power is transmitted to a transmission mechanism inside the travel transmission case 9 (see arrow A in FIG. 2).

[0016] The front portion of a traveling transmission case 11, which is long in the front-to-rear direction, is rotatably attached to both left and right sides of the traveling transmission case 9. Specifically, an axle case 12 that rotates integrally with the traveling transmission case 11 is provided on the inside of the front portion of the traveling transmission case 11 in the vehicle body. The axle case 12 is rotatably attached to both left and right sides of the traveling transmission case 9, and left and right traveling transmission cases 11L, 11R are rotatably attached corresponding to the left and right sides of the traveling transmission case 9. A pair of left and right rear wheels 7, 7 are mounted on rear wheel axles 13 that protrude laterally to the rear of the left and right traveling transmission cases 11L, 11R.

[0017] The ends of the wheel drive shafts extending outward on both the left and right sides from the traveling transmission case 9 fit into the rotation axis position of the front of the left and right traveling transmission cases 11L, 11R, and the traveling power passes through the traveling system speed change transmission part inside the traveling transmission case 9 and is transmitted to the transmission mechanism inside the left and right traveling transmission cases 11L, 11R. The traveling power is then transmitted to the rear wheel axles 13 of the left and right traveling transmission cases 11L, 11R via the transmission mechanism inside the left and right traveling transmission cases 11L, 11R, and the rear wheels 7, 7 are driven to rotate.

[0018] The left and right rear wheels 7, 7 can be disconnected from drive by left and right side clutches (not shown) provided in the traveling transmission case 9. Therefore, when turning the vehicle, the left or right rear wheel 7 on the inside of the turn is put into a non-drive state by the side clutch, allowing for smooth turning.

[0019] Further, the left and right traveling transmission cases 11L, 11R are connected to a driving means that rotates up and down, using the front sides of the left and right traveling transmission cases 11L, 11R as a rotation fulcrum to move the rear wheels 7, 7 up and down. Specifically, an upwardly extending lever portion 14 is integrally attached to the attachment portion of the left and right traveling transmission cases 11L, 11R to the traveling transmission case 9.

[0020] The electric cylinder 15 is connected to the lever portion 14, and when the piston rod of the electric cylinder 15 is extended, the left and right lever portions 14 rotate backward, causing the traveling transmission case 11 to rotate downward and the machine body to rise. Conversely, when the piston rod of the electric cylinder 15 is retracted, the left and right lever portions 14 rotate forward, causing the traveling transmission case 11 to rotate upward and the machine body to descend.

[0021] The electric cylinder 15 is operated by a sensor plate 16 that contacts the ridge surface (ground) and operates in accordance with changes in the vertical distance between the machine body and the ridge surface. The operation of the sensor plate 16 is to detect the height of the ridge top surface based on the position of the machine body, and the electric cylinder 15 is configured to operate so that the machine body is at a set height corresponding to the height of the ridge top surface based on the detection value of the sensor plate 16.

[0022] Furthermore, when the left and right electric cylinders 15 extend and retract by different amounts, the lever section 14 connected to the electric cylinders 15 rotates, moving the left and right rear wheels 7 up and down and tilting the machine body left and right. The electric cylinders 15 are configured so that the machine body can be made parallel to the slope of the furrow surface by providing sensor plates 16 on each side of the machine body.

[0023] A horizontal frame 17 is attached below the electric motor 4, and is mounted to be able to rotate in a rolling manner around a longitudinal axis at the left-right center of the vehicle body. Vertical frames 18L, 18R that are long in the vertical direction are attached to the left and right sides of the horizontal frame 17, and front wheels 8, 8 are rotatably attached to axles 19L, 19R fixed to the sides of the lower ends of the vertical frames 18L, 18R. Therefore, the front wheels 8, 8 are able to rotate in a rolling manner around a longitudinal axis at the left-right center of the vehicle body. In addition, vertical frames 18 are attached to the left and right sides of the horizontal frame 17 so that the height of the front wheels 8, 8 can be adjusted.

[0024] The steering handle 3 is provided at the rear of the vehicle body, and is located rearward of the rear wheel axle 13 of the rear wheel 7. Specifically, the steering handle 3 has a handle frame 20 attached to a table frame 22 that supports the table 6.

[0025] The steering handle 3 extends rearward on both sides from the rear end of the table frame 22, with each rear end serving as a grip portion of the steering handle 3.

[0026] The planting section 5 is equipped with a plurality of beak-shaped planting tools 24 with downward-pointing tips, a vertical movement mechanism 23 for moving the planting tools 24 up and down between positions where the lower ends of the planting tools 24 are above and below the field surface, and an opening / closing mechanism for opening and closing the planting tools 24 between a closed state in which the lower ends of the beak-shaped planting tools 24 are closed to receive seedlings from above and store the seedlings inside, and an open state in which the lower ends of the planting tools 24 are open to the left and right to release the seedlings stored inside downward.

[0027] The planting section 5 of this embodiment has a four-row planting configuration in which four planting tools 24 are arranged side by side at set intervals on the left and right sides, and these planting tools 24 are referred to as the first planting tool 24a, the second planting tool 24b, the third planting tool 24c, and the fourth planting tool 24d, from the left side of the machine body.

[0028] The four planting tools, the first planting tool 24a, the second planting tool 24b, the third planting tool 24c, and the fourth planting tool 24d, are attached two by two to the up-and-down movement mechanisms 23 provided on both the left and right sides of the transmission case 25. The transmission case 25 is transmitted power from the traveling transmission case 9 via the planting transmission case 26.

[0029] The up-and-down movement mechanism 23 has a front part that is mounted so as to be freely rotatable up and down relative to the transmission case 25, and has lifting links on both the left and right sides of the rear part to which the planting tools 24 are connected. A separately provided drive mechanism uses power from inside the transmission case 25 to move the lifting link up and down, and the first planting tool 24a and second planting tool 24b, or the third planting tool 24c and fourth planting tool 24d, connected to the left and right sides of the lifting link, move up and down.

[0030] In the raised position of this vertical movement, the lower end of each planting tool 24a to 24d is located above the field surface, and in the lowered position, the lower end of each planting tool 24a to 24d is located below the field surface.

[0031] The opening and closing mechanism of each planting tool 24a to 24d is operated by power from within the transmission case 25, and is linked to the operation of the up-and-down movement mechanism 23, so that when each planting tool 24a to 24d descends and reaches its lower end position, the lower side of that planting tool 24a to 24d opens to the left and right, putting it in an open state downward, and when each planting tool 24a to 24d ascends and reaches its upper end position, the lower side of that planting tool 24a to 24d closes, putting it in a closed state.

[0032] The table 6 is equipped with multiple seedling containers 27 that receive seedlings from a seedling tray (not shown) from above and store the seedlings inside, a moving mechanism that moves the seedling containers 27 around, passing above the first planting tool 24a, the second planting tool 24b, the third planting tool 24c, and the fourth planting tool 24d, and a seedling dropping mechanism that opens the bottom of the seedling containers 27 above the first planting tool 24a, the second planting tool 24b, the third planting tool 24c, and the fourth planting tool 24d to drop the seedlings stored inside and supply them to one of the first planting tool 24a, the second planting tool 24b, the third planting tool 24c, and the fourth planting tool 24d. The table 6 is supported below by a table frame 22.

[0033] Each seedling container 27 has a cylindrical body with openings at the top and bottom, and a bottom cover that opens and closes the lower opening of the cylindrical body, and they are connected to each other in a loop shape. A drop position adjustment mechanism is provided to adjust the timing at which the bottom cover opens. The drop position adjustment mechanism adjusts the bottom cover of the seedling container 27 to open above one of the first planting tool 24a, second planting tool 24b, third planting tool 24c, and fourth planting tool 24d corresponding to that seedling container 27.

[0034] Furthermore, the electric transplanting work vehicle 1 is provided with a seat 30 for a worker to sit on so that he can replenish seedlings on the table 6. Specifically, the seat 30 is located in front of the table 6, in the center of the left and right sides of the vehicle, facing backward. The worker sitting on the seat 30 faces backward toward the front part of the table 6 and performs seedling replenishment work by corresponding to the front part of the table 6, particularly the front linear portion of the circular movement path of the seedling container 27. A step (not shown) is provided above the planting transmission case 26.

[0035] The seat 30 is supported by a seat frame structure 31. The seat frame structure 31 has an upper surface 32 on which the seat 30 is mounted, a support pillar 33 extending vertically at the front of the aircraft, and support pillars 34 and 35 extending obliquely relative to the vertical at the rear of the support pillar 33. The front side of the seat frame structure 31 is covered by a hood (not shown).

[0036] The lower end of the support pillar 33 is connected to the connecting member above the horizontal frame 17, and the upper end supports both the left and right sides of the front end of the top surface 32. The lower end of the support pillar 34 is connected to the underside of the support pillar 33, and the upper end supports both the left and right sides of the center in the fore-aft direction of the top surface 32. The lower end of the support pillar 35 is connected to the traveling transmission case 9, and the upper end supports both the left and right sides of the rear end of the top surface 32. The lower ends of the left and right support pillars 35 are connected to each other by support pillars 36. The support pillars 36 are connected to the traveling transmission case 9. The top surface 32 is supported so as to be rotatable in the fore-aft direction together with the seat 30, around the connection part with the upper end of the support pillar 35 (see arrow B in FIG. 2 ).

[0037] For example, when replacing the battery 10, the worker tilts the seat 30 and the upper surface 32 toward the rear of the aircraft, using the rotation fulcrum F (the connection between the upper surface 32 and the upper end of the support column 35) as the fulcrum. This opens up the area above the battery 10, and the seat 30 and the upper surface 32 are positioned toward the center of the aircraft, allowing the worker positioned at the front of the aircraft to easily remove the battery 10 by tilting it upward. In addition, the worker positioned at the front of the aircraft can easily attach the replaced battery 10 from above the seat frame structure 31. After replacing the battery 10, the worker rotates the seat 30 and the upper surface 32 toward the front of the aircraft, using the rotation fulcrum F as the fulcrum, and returns the seat 30 and the upper surface 32 to their original positions.

[0038] Next, the features and effects of the electric transplanting vehicle 1 will be described.

[0039] The electric transplanting work vehicle 1 is configured with the electric motor 4 located at the front lower part of the traveling transmission case 9, and the battery 10 located above the electric motor 4. This allows the electric transplanting work vehicle 1 to have a low center of gravity because the electric motor 4, which is a heavy object, can be located at the bottom. Also, in the electric transplanting work vehicle 1, the battery 10 is located at the top front part of the traveling body 2, making it easy for workers to replace the battery 10.

[0040] Additionally, a seat 30 is disposed above the traveling transmission case 9 and the battery 10. This allows the traveling transmission case 9, battery 10, and seat 30 to be compactly arranged in the electric transplantation work vehicle 1. An operator standing at the front of the vehicle can tilt the seat 30 toward the rear of the vehicle to take in and out the battery 10 from above the seat frame structure 31, making it easy to replace the battery 10.

[0041] Furthermore, when the operator tilts the seat 30 toward the rear of the vehicle, the operator can temporarily place the battery on the seat frame structure 31. This allows the electric transplant work vehicle 1 to place a spare battery on the seat frame structure 31 when replacing the battery. Furthermore, because the seat frame structure 31 is located below the seat 30 in the electric transplant work vehicle 1, the spare battery can be placed in a relatively clean location.

[0042] The seat frame structure 31 is also connected to the traveling transmission case 9. As a result, the electric transplant work vehicle 1 is fixed to the traveling transmission case 9, which is a strength member, so the frame strength of the seat frame structure 31 can be reduced. Furthermore, since the traveling transmission case 9 of the electric transplant work vehicle 1 has a certain height, the connecting member between the seat frame structure 31 and the traveling transmission case 9 can be short. Furthermore, when a worker sits in the seat 30, the worker's weight is applied to the center of the traveling vehicle body 2 via the seat frame structure 31 and the traveling transmission case 9.

[0043] The seat frame structure 31 also serves as a stay for the battery 10. This allows the electric transplantation work vehicle 1 to have a simple configuration.

[0044] The electric transplanting vehicle 1 uses electric cylinders 15 attached to both the left and right sides to raise and lower the machine body. This creates space in the center of the traveling body 2 by not providing the electric cylinders 15, allowing the planting unit 5 to be moved forward. The electric cylinders 15 do not need to be fixed in place because they are free from leaks that occur with hydraulic cylinders.

[0045] The planting transmission case 26 is also configured to be thin in the vertical direction, which allows the electric transplanting work vehicle 1 to have low steps.

[0046] The electric cylinder 15 is attached to the seat frame structure 31. The seat frame structure 31 has rigidity because it is a strength member fixed to the driving transmission case 9. Therefore, the electric transplantation work vehicle 1 has less sway from side to side because the attachment point of the electric cylinder 15 has rigidity.

[0047] The handle frame 20 is also positioned so as to include the area directly below the table 6. This allows the electric transplanting work vehicle 1 to have narrower row spacing because the handle frame 20 does not cover the side of the planting section 5. Furthermore, the electric transplanting work vehicle 1 is electric and does not require any operating cables, allowing for more freedom in handle placement.

[0048] The planting depth arm 28, which adjusts the planting depth, is made up of a parallel link. The parallel link is driven by a motor (not shown) to move the planting depth arm 28 parallel to the furrow surface. The sensor plate 16 is attached to the planting depth arm 28. The sensor plate 16 touches the furrow surface and moves in response to changes in the vertical distance between the machine body and the furrow surface. The electric transplanting vehicle 1 operates the electric cylinder 15 based on the angle between the sensor plate 16 and the planting depth arm 28.

[0049] Additionally, one planting depth arm 28 and one sensor plate 16 are provided on each side. This allows the electric transplanting work vehicle 1 to control the planting depth and the left-right tilt of the traveling body 2 by operating the left and right electric cylinders 15 based on the angle formed between the left and right sensor plates 16 and the planting depth arms 28.

[0050] Furthermore, the table 6 and handle frame 20 are configured to rotate parallel to the ground by the operation of the parallel link in accordance with the pre-registered extension amount of the electric cylinder 15. For example, when the machine body is raised or lowered, the planting unit 5, table 6, and handle frame 20 can be rotated as a unit in the opposite direction to the rotation direction caused by the raising or lowering of the machine body, thereby preventing the table 6 and handle frame 20 from tilting. This prevents the table 6 and handle frame 20 from tilting as the traveling body 2 is raised or lowered.

[0051] In addition, the planting depth arm 28 is attached to the fulcrum of the frame 41 that supports the packing wheels 40. As a result, even if the planting depth of the electric transplanting work vehicle 1 is changed, the angle of the frame 41 that supports the packing wheels 40 relative to the ground does not change, so packing remains constant.

[0052] Next, other features and effects of the electric transplanting vehicle 1 will be described.

[0053] The electric transplanting vehicle 1 is equipped with a speed control lever for adjusting the speed of the traveling body 2. The speed control lever limits the maximum speed when planting has begun. This eliminates the need for the electric transplanting vehicle 1 to switch between travel and planting speeds.

[0054] The electric transplanting work vehicle 1 is also equipped with a forward / reverse lever for switching the travelling body 2 between forward and reverse. This allows the worker to operate the electric transplanting work vehicle 1 reliably using the lever, making it less likely to be operated incorrectly. The forward / reverse lever is also configured to be operated forward for forward travel and rearward for reverse travel, making operation intuitive and easy to understand.

[0055] Furthermore, when the worker operates the forward / reverse lever of the electric transplanting work vehicle 1, the electric motor 4 stops even if the traveling body 2 is traveling at a higher speed using the speed control lever. This improves safety by configuring the electric transplanting work vehicle 1 so that, when restarting, the speed control lever is returned to the non-traveling position, and then the speed control lever is increased again to allow the vehicle to move.

[0056] Furthermore, the electric transplanting work vehicle 1 operates in dry planting mode when the forward / reverse selector lever is operated inward (inward in the left-right direction) when in the neutral position for forward / reverse operation. This allows the electric transplanting work vehicle 1 to be operated with just one lever, making it a simple configuration. Furthermore, the electric transplanting work vehicle 1 can be configured so that dry planting control is possible only when the machine body lift is fixed, thereby preventing erroneous operation.

[0057] Furthermore, the electric transplanting work vehicle 1 applies the brakes when the forward / reverse selector lever is operated outward (outward in the left-right direction) from the neutral position for forward / reverse operation. As a result, the power of the electric transplanting work vehicle 1 is stopped when the forward / reverse selector lever is operated in a direction to reduce the vehicle speed, and the brakes are applied when the lever is operated to the brake side (outward).

[0058] <Image Recognition System> Next, an image recognition system provided in the electric transplanting vehicle 1 (for example, a fully automatic vegetable transplanter) will be described.

[0059] The image recognition system uses Bluetooth (registered trademark) to enable the ECU of the electric transplanting work vehicle 1 to communicate with external devices (for example, a camera). The image recognition system also enables data acquired by the ECU of the electric transplanting work vehicle 1 to be transmitted to an external device (for example, on the cloud) through communication with the external device.

[0060] The image recognition system also uploads ECU-acquired data to the cloud via an external terminal, enabling online data collection. When uploading ECU-acquired data to the cloud, the image recognition system can simultaneously upload images taken by an external device as related data. The image recognition system can calculate the vehicle speed of the electric transplanting vehicle 1 based on the captured images (for example, images of rows where seedlings have been planted).

[0061] The image recognition system is also equipped with sensors that can detect rotation individually on the left and right front wheels of the electric transplanting work vehicle 1, making it possible to detect the rotation speed of each front wheel. The image recognition system also has a control system that calculates the rear wheel axle rotation speed from gear rotation and calculates the rotation speed of the left and right front wheels using the onboard sensors. The electric transplanting work vehicle 1 is equipped with recognition marks on the left and right front wheels in a color different from the tire color to make rotation detection easier using image recognition.

[0062] The image recognition system also analyzes data captured by external devices on the cloud and measures the rotation direction and number of rotations of the captured wheels. Alternatively, the image recognition system measures the travel distance of the machine (fully automatic vegetable transplanter) based on the tire dimensions of the machine from video captured at the same angle from a certain distance. This allows the image recognition system to obtain information that can be used to diagnose the machine's operating condition by capturing video in the field.

[0063] In addition, the image recognition system transmits wheel rotation speed information and the plant spacing setting value detected by the machine during filming from the machine's ECU, and the transmitted information is received by an external terminal and uploaded to the cloud along with the video, making it possible to compare the wheel rotation speed detected from the video with the wheel rotation speed detected by the machine's onboard sensor.

[0064] The image recognition system also compares the vehicle speed of the electric transplanting vehicle 1 calculated based on the image with the vehicle speed calculated from the wheel rotation speed, detecting slippage as the transplanter travels through the field. The image recognition system is a management system that manages detection results on a cloud server and can utilize rotation speed information and spacing setting values ​​as statistical data. This allows the electric transplanting vehicle 1 to perform automatic analysis within the system.

[0065] In addition, the image recognition system simultaneously detects slippage while the vehicle is moving online while real-time video recording is taking place. Furthermore, the image recognition system is a feedback system that automatically changes the working conditions (row spacing settings) and adjusts them to minimize slippage. The image recognition system also receives communication data from an external terminal and controls the row spacing settings to change to the received values. This allows the electric transplanting work vehicle 1 to automatically and remotely set the optimal row spacing settings.

[0066] <Detection method for mulch vinyl and ridges> Next, the mulch vinyl and the ridge detection method will be described with reference to Figures 5 to 8. Figure 5 is an explanatory diagram of a mulch vinyl 100. Figures 6 to 8 are explanatory diagrams of a ridge detection method.

[0067] As shown in FIG. 5, the mulch vinyl 100 has a line 101 in the center of the mulch vinyl 100 along the ridges. The line 101 serves as a guide for the transplanting vehicle to move along the ridges without using guide rollers. The mulch vinyl 100 also makes it possible to easily measure the distance between rows using a sensor. The mulch vinyl 100 also makes it easy to detect the ridges when creating a map using a drone 102.

[0068] For example, a photoreflector is used as a sensor to detect the line 101. As shown in Figure 6, a boom 104 is mounted in front of the transplanting vehicle 103, and a sensor 105 is mounted at each end of the three branches of the boom 104. The sensors 105 detect the ridge on which the transplanting vehicle 103 is traveling and the ridges on either side of it. This allows the transplanting vehicle 103 to move along the ridge without using guide rollers.

[0069] The height of the sensor 105 on the boom 104 can also be adjusted to match the height of the rows. This allows the transplanting vehicle 103 to plant without damaging the mulch vinyl 100 between the rows. The transplanting vehicle 103 can also ensure safety during automated work by providing an object sensor on the boom 104. As shown in Figure 7, the boom 104 can be extended and retracted to match the distance between the rows, and can also be rotated around the axis in the fore-and-aft direction of the vehicle body to shorten the width of the boom 104.

[0070] <Moving the rows of an electric transplanting vehicle> Next, the movement of the ridges by the electric transplanting work vehicle will be described with reference to Figures 8 and 9. Figures 8 and 9 are explanatory diagrams of the movement of the ridges by the electric transplanting work vehicle 200. When the transplanting work vehicle 103 moves along the ridges, the distance between rows is measured using the ridge detection method described above. Furthermore, the electric transplanting work vehicle 200 does not plant in one direction, but travels back and forth while planting.

[0071] As shown in Figure 8, the axles of the front wheels 201 of the electric transplanting work vehicle 200 can rotate 90 degrees horizontally. Conventional transplanting work vehicles turn in a two-wheeled state by lifting the two front wheels to switch to a two-wheeled state, but turning in a two-wheeled state without human assistance was difficult. In addition, a considerable amount of force was required to switch the transplanting work vehicle to a two-wheeled state. The electric transplanting work vehicle 200 can turn automatically without human assistance, as shown in Figure 9, by shortening the distance between the front wheels 201 and rear wheels 202 and then rotating the axles of the front wheels 201 horizontally 90 degrees.

[0072] <Seedling supply cartridge> Next, the seedling supplying cartridge will be described with reference to Figures 10 to 12. Figures 10 to 12 are explanatory diagrams of a cartridge 300 for supplying seedlings.

[0073] The cartridge 300 constitutes a seedling supply mechanism that supplies seedlings to a planting unit of the sweet potato transplanter. As shown in Figure 10, the cartridge 300 is a rectangular parallelepiped member, and is configured so that the sides of multiple cartridges 300 can be connected to each other.

[0074] The cartridge 300 has a through hole 301 that can hold and secure the seedlings C (see Figures 11 and 12). The inner surface 302 of the cartridge 300 is curved inward (towards the through hole), making it shaped to easily hold the seedlings C. The cartridge 300 is made of a resin member with a certain degree of hardness, and the curve of the inner surface 302 rebounds like a leaf spring to secure the seedlings C. The cartridge 300 has a locking member 303 that locks the opening and closing of the cartridge 300. The locking member 303 is made of a soft resin member such as rubber, and is attached by hooking onto a protrusion on the end surface of the cartridge 300.

[0075] After the cartridge 300 is transported to the set position by the transport member, as shown in Figures 11 and 12, the claws 304 grip and pull the seedlings C, releasing the locking member 303 and opening the outer periphery of the cartridge 300. The claws 304 then plant the gripped seedlings C in the field. This allows the sweet potato transplanter to increase the planting speed. Furthermore, the sweet potato transplanter allows even operators with low levels of proficiency to easily plant. Furthermore, the sweet potato transplanter reduces the amount of outdoor work.

[0076] <An electric transplanting vehicle that can be used as both a transplanter and a weeder> Next, an electric transplanting vehicle that can be used as both a transplanter and a weeder will be described with reference to Figure 13. Figure 13 is an explanatory diagram of a weeder that uses an electric transplanting vehicle.

[0077] Since transplanters are only used for a fixed period of time, currently, transplanters that detect ridges and move independently have low manufacturing cost effectiveness. Therefore, this application proposes an electric transplanting vehicle that can be used as both a transplanter and a weeder.

[0078] The electric transplanting vehicle performs weeding using a mop. The planting unit of the electric transplanting vehicle is removed and replaced with the weeding mechanism 400.

[0079] Specifically, the weeding mechanism 400 is a circular mop that rotates. The weeding mechanism 400 is made of a mop made of a thread-like material with fine, soft bristles. The weeding mechanism 400 suppresses the growth of weeds D by stirring up the surface of the ridge surface with the rotating mop.

[0080] As described above, the electric transplanting work vehicle 1 of this embodiment is an electric transplanting work vehicle 1 that has a seat frame structure 31 on the front side of the running body 2, and is equipped with a seat 30 that is arranged on the upper part of the seat frame structure 31 facing backward in the direction of travel, an electric motor 4 that is arranged on the lower side of the seat frame structure 31, and a battery 10 that is arranged above the electric motor 4 and supplies power to the electric motor 4, and the battery 10 can be replaced by tilting the seat 30.

[0081] As a result, by locating the heavy electric motor 4 and battery 10 at the front of the vehicle, the electric transplanting work vehicle 1 can maintain a weight balance with the planting section 5 and table 6 at the rear of the traveling body 2, even when the worker is not seated. Furthermore, by accommodating the electric motor 4 and battery 10 within the seat frame structure 31 below the seat 30, the electric transplanting work vehicle 1 can be arranged compactly and maintenance can be made easy.

[0082] In addition, the electric transplant work vehicle 1 has a running transmission case 9 provided behind the electric motor 4 and battery 10, a seat frame structure 31 and the running transmission case 9 connected to each other, supporting the seat frame structure 31, a support pillar 34 extending diagonally relative to the vertical direction, and a lever portion 14 that enables the rear wheels 7 of the running body 2 to be raised and lowered, and an electric cylinder 15 is provided between the support pillar 34 and the lever portion 14, and the running body 2 is raised and lowered by the extension and contraction of the electric cylinder 15.

[0083] As a result, the electric transplantation work vehicle 1 can have a strong and compact structure by using the traveling transmission case 9 on one end of the seat frame structure 31. By using the strong seat frame structure 31, the electric transplantation work vehicle 1 can be configured so that the traveling body 2 can be raised and lowered by extending and contracting the electric cylinder 15.

[0084] The electric transplanting work vehicle 1 also has a planting section 5 at the rear of the running body 2, a table 6 for temporarily storing seedlings for transplanting and a table frame 22 supporting the table 6 are provided above the planting section 5, and a handle frame 20 is provided extending from the table frame 22 to the rear of the running body 2, and the table 6 and handle frame 20 rotate in accordance with the extension amount of the electric cylinder 15 registered in advance so that they are parallel to the ground.

[0085] This allows the planting unit 5, the operating handle 3, and the table 6 (tank) to operate as a single unit in a parallel link-like manner, simplifying the configuration of the electric transplanting work vehicle 1. Therefore, the worker can work without the handle frame 20 and the table 6 being tilted.

[0086] Further advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents. [Explanation of symbols]

[0087] 1 Electric transplanting vehicle 2 Running vehicle 4 electric motors 5 Planting section 6 tables 7 rear wheels 9. Transmission case (transmission case) 10 Battery 14 Lever section 15 Electric cylinder 20 Handle frame 22 Table Frame 30 seats 31 Seat frame structure 34 Post

Claims

1. An electric transplant work vehicle equipped with a seat frame structure on the front side of the traveling body, a seat provided on an upper portion of the seat frame structure and facing rearward relative to the traveling direction; an electric motor provided under the seat frame structure; a battery provided above the electric motor and supplying power to the electric motor; An electric transplantation work vehicle in which the battery can be replaced by tilting the seat.

2. a transmission case is provided behind the electric motor and the battery; The seat frame structure and the transmission case are connected to each other, a support pillar that supports the seat frame structure and extends obliquely relative to the vertical direction; and a lever portion that enables the rear wheels of the traveling vehicle body to be raised and lowered, an electric cylinder is provided between the support and the lever; 2. The electric transplanting work vehicle according to claim 1, wherein the traveling body is raised and lowered by extension and contraction of the electric cylinder.

3. A planting unit is provided on the rear side of the traveling vehicle body, A table for temporarily storing crops to be transplanted and a table frame for supporting the table are provided above the planting section, a handle frame extending from the table frame to the rear of the traveling vehicle body; 3. The electric transplanting work vehicle according to claim 2, wherein the table and the handle frame rotate in accordance with a pre-registered extension amount of the electric cylinder so as to be parallel to the ground.

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