JP7318633B2 - transplanter - Google Patents

Description

TECHNICAL FIELD The present invention relates to a transplanter for transplanting vegetable seedlings into fields.

Conventionally, in accordance with the planting operation of the planting hopper for planting seedlings in the field, an irrigation device is provided to supply the water absorbed by the seedlings immediately after transplanting into the planting hopper, and a seedling tray containing supplementary seedlings and a seedling tray. A transplanter equipped with a spare seedling frame for loading a seedling box is known (Patent Document 1).

JP-A-2020-68743

In the transplanter of Patent Document 1, by supplying water to the seedlings immediately before being planted in the field, it is possible to prevent the seedlings from suffering poor growth or wilting due to lack of water after transplanting.

However, as the working time elapses, the seedlings piled up in the spare seedling frame evaporate due to the influence of outside air and sunlight. As a result, the seedlings gradually weaken, and even if they are supplied with water immediately before planting, they cannot fully recover, causing problems such as poor growth and wilting.

Although it is conceivable that the operator should sprinkle water on the seedlings, the work of planting the seedlings needs to be interrupted during that time, which causes a problem of reduced work efficiency.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a transplanter capable of preventing weakening of supplementary seedlings due to drying and preventing poor growth and wilting.

In order to solve the above problems, the following technical measures were taken.

The invention according to claim 1 is
Planting devices (20a, 20b) for planting seedlings in a field on a traveling vehicle body (40), spare seedling frames (50) for loading seedling trays and seedling boxes for accommodating supplementary seedlings, and water for growing seedlings. In a transplanter provided with an irrigation device (700) that supplies
A preliminary seedling watering device (200) for supplying water from the watering device (700) to the seedlings in the seedling tray and the seedling box loaded in the preliminary seedling frame (50) ,
The preliminary seedling watering device (200) is provided with a main watering pipe (201) extending in the front-rear direction in the left and right central part of the mounting table (55) of the preliminary seedling frame (50). Sub watering pipes (202, 203) are provided on both sides,
The main irrigation pipe (201) and the left and right sub-irrigation pipes (202, 203) are respectively connected by a joint pipe (204), and configured to allow water to move between each pipe,
The main irrigation pipe (201) and the sub-irrigation pipes (202, 203) are equipped with a drainage valve (207) that forms a plurality of water discharge holes for discharging water, and a preliminary A spraying member (208) is provided near the front side of the seedling frame (50) and sprays water in the form of a mist,
The irrigation device (700) and the main irrigation pipe (201) are connected with the water pipe (205),
A work seat (46) on which an operator rides is provided near the front side of the traveling vehicle body (40) in the traveling direction, and the spray member (208) is arranged in a posture facing the work seat (46),
A spray member (208) and a spray hose for supplying water to the spray member (208) are also provided around the lower part of the work seat (46), and a seat spray switch (208b) for switching water supply to the spray hose side and a spray valve motor. (208a) is provided,
By arranging the main watering pipe (201), the left and right sub watering pipes (202, 203), and the drain valve (207) below the mounting surface of the mounting table (55), the preliminary seedling watering device ( 200) permeates through holes formed in the bottom of the seedling tray or the seedling box,
A transplanter characterized in that a drain valve (207) and a spray nozzle (208) are individually configured to be able to switch the release of water and to be configured to be able to change the amount of water supplied.

According to the invention according to claim 1, by supplying water to the seedlings loaded in the spare seedling frame (50) by the spare seedling watering device (200), the seedlings dry during long working hours and the growth is poor after planting. It is possible to prevent it from waking up and withering.

Moreover, since water can be supplied to the seedlings before planting, it is possible to prevent delays in growth due to lack of water after transplanting.

In addition, by arranging the main watering pipe (201), the left and right sub-watering pipes (202, 203), and the drain valve (207) below the mounting surface of the mounting table (55), preliminary seedling watering can be achieved. Water supplied from the device (200) can permeate through holes formed in the bottom of the seedling tray or seedling box.

In addition , the spray member (208) located close to the work seat (46) can generate a wall of fog in the vicinity of the work seat (46), thus reducing the temperature around the worker and preventing high temperatures. It is possible to reduce fatigue due to

In addition, since the sprayed water evaporates quickly, the attached water does not heat the seedlings and weaken them.

Left side view of transplanter Right side view of transplanter Rear view of the transplanter Front view of transplanter Top view of the transplanter A plan view of the main parts showing the area around the bumper on the front side of the fuselage Main part side view showing the vicinity of the bumper on the front side of the fuselage Perspective view of essential parts showing the vicinity of the bumper on the front side of the fuselage Partial side view of transplanter with irrigation pump and check valve Perspective view of main parts showing control unit, planting device, seedling supply device, etc. at the rear of the aircraft Perspective view of main parts of transplanter showing ridge edge sensor, boarding step, etc. Left side view of transplanter with rear auxiliary step Left side view of transplanter with rear auxiliary step Principal part perspective view showing rear auxiliary step Principal part perspective view showing a rear auxiliary step of another configuration example Main part diagram showing the angle adjusting mechanism of the rear auxiliary step Left side view showing a mechanism for moving the rear auxiliary step in and out according to vehicle height adjustment Side view of essential parts showing a rear auxiliary step that can be folded and rotated Principal part plan view showing a mounting table provided with a preliminary seedling watering device Plan view showing a transplanter equipped with a preliminary seedling watering device Front view showing a transplanter with a preliminary seedling watering device Side view showing a transplanter with a preliminary seedling watering device Block diagram showing the control mechanism of the preliminary seedling watering device Block diagram showing the control mechanism of the preliminary seedling watering device of another configuration example The front view which shows the transplanter provided with the preliminary seedling watering apparatus of another example of a structure. The side view which shows the transplanter provided with the preliminary seedling watering apparatus of another example of a structure. The front view which shows the transplanter provided with the preliminary seedling watering apparatus of another example of a structure. The side view which shows the transplanter provided with the preliminary seedling watering apparatus of another example of a structure. Cross-sectional view of the main part showing the power generation device Schematic diagram of the water supply route showing the arrangement of the power generator Schematic diagram of the water supply route showing the arrangement of the power generator in another configuration example Schematic diagram showing the power supply route to the battery and the power transmission route Top view of transplanter with solar panel Schematic diagram showing a battery cooling device Schematic diagram showing a battery cooling device of another configuration example

Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a left side view showing a transplanter 10 for transplanting seedlings as an example of a transplanter according to an embodiment of the present invention, FIG. 2 is a right side view, FIG. 3 is a rear view, and FIG. 4 is a front view. In addition, FIG. 5 is a plan view.

In the following description, the side on which the steering handle 404 is arranged is the rear, and the opposite side, ie, the side on which the engine 41 is arranged, is the front. When facing the front of the fuselage, the right hand side is the right side, and the left hand side is the left side.

As shown in FIGS. 1 to 5, the transplanter 10 of the present embodiment includes a traveling vehicle body 40 that allows the machine body to travel forward, a steering handle 404 for walking operation provided at the rear of the traveling vehicle body 40, and a A planting device 42 for planting seedlings and a seedling supply device 43 for supplying seedlings to the planting device 42 are provided.

A traveling vehicle body 40 is provided with a transmission case 39 at the front part of the vehicle body, and an engine 41 as a driving device is provided on the front side of the transmission case 39 . Axle covers 101 are connected to the rear lower parts of the fuselage on both the left and right sides of the transmission case 39 to cover axles capable of adjusting the tread for changing the lateral positions of the running wheels 44 serving as the rear wheels. Traveling transmission cases 38 for transmitting driving force to the traveling wheels 44 provided on the rear side of the machine body are attached to the outer ends so as to be vertically rotatable.

The left and right running wheels 44 are arranged between the left and right of the running transmission case 38 and the front and rear frames 103, which will be described later, to reduce the width of the body. However, if the left and right running wheels 44 can be attached to the outer side of the traveling transmission case 38 in order to correspond to the conditions such as the ridge width for planting seedlings, the work conditions that can be handled can be increased. .

More precisely, the left and right axle covers 101 are rotatably mounted on an internal axle (not shown), and the traveling transmission case 38 is mounted on each of these axle covers 101, and the hydraulic cylinders 300 for lifting and lowering, which will be described later, and As the axle cover 101 rotates due to the expansion and contraction of the rolling cylinder, the travel transmission case 38 rotates up and down.

1 to 5 and 10, at least the transmission case 26 is connected to the transmission case 26, which is transmitted from the transmission case 39 to branch and supply the driving force to the planting device 42 and the seedling supply device 43. A base plate 400 covering the left and right side surfaces and the rear surface is provided, and a frame stay 401 is detachably provided on the rear portion of the base plate 400 via a fixing member such as a bolt. The frame stay 401 is provided with a handle frame 402 that protrudes in an arc shape toward the upper rear side of the fuselage. A control unit 403 for turning on/off the seedlings is provided, and a control handle 404 is provided for the worker to hold when operating the machine body, such as when moving without planting seedlings. The steering handle 404 has a shape that bends in the left-right direction of the fuselage and toward the rear of the fuselage with the handle frame 402 as the center. are provided respectively. A first throttle lever 406 for increasing or decreasing the output of the engine 41 is provided on either the left or right side of the steering handle 404 .

A control panel 47a is provided between the left and right sides of the steering wheel 404. The control panel 47a includes a vehicle height adjustment lever 123 for adjusting the vehicle height of the traveling vehicle body 40 by operating the hydraulic cylinder 300 for elevating and retracting, A main clutch lever 125 that turns on and off the transmission of driving force to the traveling transmission case 38 and the transmission case 26, a first engine switch 407 that switches whether to start the engine 41 and performs a stop operation, and a traveling of the traveling vehicle body 40 A main shift lever 150 is provided to switch the transmission between travel speed, planting speed, neutral travel and reverse travel.

When permitting starting of the engine 41, the operator pushes the first engine switch 407 and rotates it to the ON position. Accordingly, when the engine 41 is started, the engine 41 is started. The engine 41 may be started using a self starter or a recoil starter. Further, even when the engine is operated by a driving device other than the engine 41, such as an electric motor, the electric motor is energized and started when the first engine switch 407 is in the ON position.

When the engine 41 is to be stopped, the operator lightly pushes the first engine switch 407, which is switched to the off position by the force of an internal torque spring (not shown), whereby the engine 41 is stopped.

Since the first engine switch 407 needs only to be lightly pushed in during the off operation, traveling and planting can be immediately stopped. As a result, the running and planting stop immediately upon reaching the end of the ridge, thereby preventing seedlings from being planted at locations other than the ridge, thereby reducing excess seedling consumption. In addition, when the machine is moved to the ridge where the next planting work is to be performed, there is no extra movement, so fuel consumption and work time are reduced.

A seedling feeding device 43 is provided on the front side of the control handle 404 and above the transmission case 26 to convey seedlings fed by the operator to the left and right planting hoppers 20a and 20b. The strength of the operation handle 404 and the vicinity of the seedling supply device 43 is improved and the vibration is reduced by extending the rear part of the seedling supply device 43 and the reinforcing connection stay 151 provided on the upper rear side of the handle frame 402 and on the front side of the operation panel 47a. An anterior-posterior stiffening frame 152 is provided to reduce the

When the seedling planting work on one ridge is completed, the traveling vehicle body 40 moves to the rear side in the moving direction of the machine body, and rotates while holding the steering handle 404 and the side clutch operating lever 405 inside the rotation. The transmission to the inner running wheels 44 is cut off, and the running vehicle body 40 is turned to move to the starting end side of the next planting work row. At this time, the operator puts his/her weight downward while gripping the steering handle 404 to move the front side of the traveling vehicle body 40 upward away from the agricultural field, thereby facilitating turning traveling.

Heavy objects such as a spare seedling frame 50 for loading a seedling box, a work seat 46, an engine 41, and a transmission case 39 are arranged on the front side of the body with respect to the axle of the running wheel 44, and the front side of the running body 40 is positioned upward. In order to lift it up, it is necessary to apply a force against the weight of these members, as well as other components.

At this time, if the weight can be applied using the legs, the force required for the work can be easily generated. It is necessary to work mainly on

As shown in FIGS. 12 to 14, in order to apply the weight via the feet during turning work, the front end portions of the left and right steering handles 404 are connected, and a step frame is downwardly extended from a connecting frame 410 extending in the left-right direction of the aircraft body. A rear auxiliary step 412 is provided between the right and left step frames 411, 411, on which the worker puts his/her foot on when turning or moving, if necessary.

The left and right step frames 411, 411 are arranged in a posture that is substantially vertical to the ground when the traveling vehicle body 40 is on the ground with an inclination of 0 degrees, or in a posture that is slightly inclined toward the rear of the fuselage. The left and right step frames 411, 411 are configured so as not to protrude.

Further, the rear auxiliary step 412 may be configured to connect the vicinity of the lower end portions of the left and right step frames 411, 411, instead of connecting the lower end portions thereof. Alternatively, it is possible to reach the rear auxiliary step 412 above the fuselage rather than near the lower end and without touching the operation panel 47a or the like with the operator's foot or without forcibly raising the operator's foot. It is good also as a structure which connects in an up-down position.

Furthermore, the rear auxiliary step 412 is connected to the left and right step frames 411, 411 at a plurality of points with a predetermined interval in the vertical direction, and the rear auxiliary step 412 is designed so that the operator can easily reach the foot according to his/her physique. may be easily selected, and the strength may be increased to prevent breakage.

Since it is assumed that the rear auxiliary step 412 is stepped on with the weight of the operator, not only the rear auxiliary step 412 but also the left and right step frames 411, 411 must be structured to withstand the load. In order to ensure this strength, as shown in the figure, a step reinforcing frame 413 is provided at a position different from the mounting position of the rear auxiliary step 412 to connect the left and right step frames 411, 411, and the step reinforcing frame 413 and the base plate are provided. A reinforcing rod 414 may be provided at the rear portion of the frame stay 400 , more specifically between the front and rear portions of the frame stay 401 .

If the frame stay 401 does not have enough space for mounting the reinforcing rod 414, an extended stay 401a is provided, which forms a recess for avoiding the handle frame 402 and a position for mounting the reinforcing rod 414 on the front end side of the machine body. and

If the rear auxiliary step 412 can be changed not only in the vertical position but also in the front-rear position depending on conditions such as the position at which the turning operation is performed and the physique of the worker, the worker can step on it in a more comfortable posture. , the front side of the traveling vehicle body 40 can be lifted with a lighter force.

As shown in FIG. 16, the reinforcing rod 414 is divided into front and rear parts, and one of the front reinforcing rod 414a and the rear reinforcing rod 414b is inserted into either one of the front reinforcing rod 414a and the rear reinforcing rod 414b so as to be slidable in the front-rear direction. By mounting the frames 411, 411 on the steering handle 404 so as to be rotatable back and forth, and changing the length of the reinforcing rod 414 in the front and back direction to change the angle of inclination of the left and right step frames 411, 411, the rear auxiliary step 412 can be moved forward and backward. Configure repositionable.

The length of the front reinforcing rod 414a and the rear reinforcing rod 414b may be fixed by fastening members such as bolts. It may be configured to be

As a result, the worker can raise the front side of the traveling vehicle body 40 with a light force when starting turning, so that the front wheels 45 and the like come into contact with the field during turning and prevent turning, thereby improving work efficiency. is prevented from being lowered and the field site is damaged.

In the configuration in which the step reinforcing frame 413 is provided between the left and right step frames 411, 411, the step reinforcing frame 413 occupies one mounting position of the rear auxiliary step 412. Height options are reduced. Therefore, the upper portion of the step reinforcing frame 413 may be flat, and the rear auxiliary step 412 may be arranged on the upper portion.

Alternatively, the mounting position of the step reinforcing frame 413 is the highest, and the rear auxiliary step 412 is arranged only below the step reinforcing frame 413 in the body. At this time, as shown in FIG. 14, extension step frames 416, 416 are mounted on both left and right sides of the rear auxiliary step 412 toward the upper side of the fuselage in order to secure a sufficient mounting range of the rear auxiliary step 412 in the vertical direction. One or more mounting holes (not shown) are formed in the extended step frames 416,416. In addition, among the left and right step frames 411, 411, a plurality of adjustment holes 417 are formed respectively below the mounting position of the step reinforcement frame 413, and the adjustment holes 417 and the extension step frame 416 are formed at arbitrary upper and lower positions. , 416 are provided with fastening members 418 such as bolts.

Alternatively, mounting pins may be inserted into the adjusting holes 417 and the mounting holes, and the mounting pins may be fixed by split pins. With this configuration, the operator can insert and remove the split pin by hand, so that the vertical position of the rear auxiliary step 412 can be adjusted without having a tool such as a wrench.

As shown in FIG. 15, the plurality of adjustment holes 417 formed in the vertical direction are connected to the mounting holes to form long holes, and when the fastening member is loosened, the extended step frames 416, 416 can move in the vertical direction. When tightened, the vertical movement of the extended step frames 416, 416 is restricted, and the vertical position of the rear auxiliary step 412 may be fixed.

14 to 16, the left and right extended step frames 416, 416 are in contact with the left and right step frames 411, 411 from the outside of the fuselage. good.

The rear auxiliary step 412 is adjusted to a vertical position that is easy for the operator to step on. It is necessary to move it to a position higher than the surface, which reduces work efficiency.

In order to prevent this, as shown in FIG. One end of the step cable 416a is connected to one or both. The other end of the step cable 416a is connected to the rear side of the arm 13 provided on the upper front side of the traveling transmission case 38 which changes the vehicle height of the traveling vehicle body 40 by rotating.

When the travel transmission case 38 is rotated downward, that is, when the vehicle height of the travel vehicle body 40 is raised, the step cable 416a is loosened and the rear auxiliary step 412 is lowered to a vertical height at which the rear auxiliary step 412 is easily stepped on. When the travel transmission case 38 is rotated upward, that is, when the vehicle height of the travel vehicle body 40 is lowered, the step cable 416a is pulled to raise the rear auxiliary step 412 to a vertical height where it does not contact the ridge surface. configuration.

With the above configuration, when the vehicle height of the traveling vehicle body 40 is set to the height for turning, the rear auxiliary step 412 automatically moves to a height at which it is easy to step on, and when it is set to a height for planting work, the auxiliary step 412 automatically moves. moves to a height that does not touch the ridge surface, the time and labor required for changing the vertical height of the rear auxiliary step 412 before and after turning can be reduced.

Alternatively, as shown in FIG. 18, the left and right extension step frames 416, 416 are attached to the left and right step frames 411, 411 so as to be vertically rotatable. Rotation restricting pins 418, 418 are respectively provided for contacting the left and right step frames 411, 411 by the amount of rotation to restrict further rotation. Alternatively, one rotation restricting pin 418 may be provided over the left and right extended step frames 416 , 416 . Lock springs 419, 419 are provided on the left and right step frames 411, 411 on the rear side of the machine body, respectively, and the amount of vertical rotation of the left and right extension step frames 416, 416 becomes the amount of rotation that crosses the fulcrum, thereby providing rear support. The step 412 is configured to be switched between a stepping position for turning and a retracted position positioned above the ridge surface.

With the above configuration, the rear auxiliary step 412 can be switched between the depressed position and the retracted position without using a tool. In particular, due to the tension of the lock springs 419, 419, the rotation does not stop at a position between the stepping position and the retracted position, so that the left and right extension step frames 416, 416 rotate downward during the planting work, and the rear auxiliary step It is possible to prevent the ridge 412 from contacting and roughening the ridge, and from rotating upward and moving it to the stepping position again when stepping on.

In addition, since the operator can step on the rear auxiliary step 412 to rotate from the storage position to the stepped-on position, there is no need to touch the rear auxiliary step 412 with the hand, and the operator's hand becomes dirty with soil or the like. In addition, there is no need to squat down during operation, and the labor of the operator is reduced.

A U-shaped bumper support frame 108 is provided on the front side of the transmission case 39 and on both left and right sides thereof so as to protrude toward the front side of the fuselage. In front of the left and right bumper support frames 108, bumpers 109 projecting toward the front side of the fuselage are provided.

As shown in FIGS. 6 to 8, the bumper 109 includes a bumper plate 109a formed by bending the front side of the fuselage and the left and right sides of a plate downward, a front weight 109b detachable from the upper surface of the bumper plate 109a, and a bumper plate. A bumper rod 109c extending in the left-right direction from 109a. The front weight 109b is made of a mass of relatively heavy and hard material such as iron, and has a shape that protrudes forward from the bumper plate 109a.

As a result, the front weight 109b, which is a lump having weight and hardness, protrudes the most forward of the fuselage, so that the bumper plate 109a can be prevented from being damaged when it comes into contact with an obstacle.

On the front side of the fuselage of the left and right bumper support frames 108 and on the lower side of the fuselage, recesses (not shown) with openings on the underside of the fuselage are formed. The frame 110 is inserted and fixed.

By providing the front beam frame 110, the right and left bumper support frames 108 and the transmission case 39 form a rectangular frame on the front side of the aircraft, thereby improving the strength of the front side of the aircraft. In particular, when the bumper 109 comes into contact with an obstacle, the left and right bumper support frames 108 are inserted into the front beam frame 110 and fixed, so damage and impact are less likely to propagate to the rear side of the left and right bumper support frames 108. Become.

Further, when the transmission case 39 is assembled to the fuselage, the recesses of the left and right bumper support frames 108 are inserted into the front beam frame 110 and then moved in the left-right direction, thereby fixing the front-rear position of the transmission case 39 and then moving the left-right position. can be adjusted, it is possible to prevent the assembling work from being delayed due to the displacement of the attachment position of the transmission case 39 .

The rear part of the engine 41 is mounted on the front side of the transmission case 39 and on one of the left and right sides, and the front part of the engine 41 is mounted on the engine mount arranged near the center of the left and right sides of the front beam frame 110. However, the bumper support frame 108 on the side where the engine 41 is arranged and the engine 41 are arranged with a gap in the vertical direction. That is, the bumper support frame 108 is not a member that receives the engine 41 from below.

With the above configuration, the impact when the bumper 109 comes into contact with an obstacle can be prevented from being transmitted from the bumper support frame 108 to the engine 41, thereby preventing the engine 41 from being damaged or malfunctioning due to the impact. can.

Further, even if the bumper support frame 108 is deformed by an impact, the loaded condition of the engine 41 is hardly affected, and even if the bumper 109 is damaged, the power of the engine 41 can be used for work and movement.

Step support plates 111 having left and right concave portions for mounting bumper rods 109c are mounted on the left and right sides of the bumper plate 109a, respectively. The left and right step support plates 111 are supported via reinforcement arms 112 provided on the rear side of the front beam frame 110 and on both left and right sides.

The upper surfaces of the left and right step support plates 111 are flat, and on one left and right side of the traveling vehicle body 40, that is, on the left side of the vehicle body, there is a front boarding step 113 on which a worker puts his feet when getting on and off from the front side of the machine body. to wear. On the other hand, on the left and right sides of the machine body, that is, on the right side of the machine body, a main shift lever 801 between plants, a sub shift lever 802 between plants, and a main shift lever 150 for setting the front-rear spacing between seedlings planted by the planting hoppers 20a and 20b, the so-called spacing between plants. is operated to the planting speed, forming an interval switching cover 114 that supports a planting speed change lever 803 that selects the first planting speed or the second planting speed.

The front boarding step 113 includes a lower footrest portion 113a located on the front side of the aircraft body and vertically downward, and an upper footrest portion 113b located on the rear side of the aircraft body and above the lower footrest portion 113a in the vertical direction, It is composed of an intermediate inclined portion 113c which is positioned between the upper and lower portions of the lower footrest portion 113a and the upper footrest portion 113b and which is twisted and inclined toward the outer side of the body. A plurality of non-slip projections 113d are formed on the surface of the lower footrest portion 113a. It is assumed to be the front-to-rear length that is straddled and passed when moving between 113a and upper footrest portion 113b.

On the other hand, the space switching cover 114 includes a lower base portion 114a located on the front side of the machine body and vertically lower side, and an upper side base portion 114b positioned on the rear side of the machine body and above the lower side base portion 114a in the vertical direction. , between the lower base portion 114a and the upper base portion 114b. It is composed of a lever mounting portion 114c in which a moving groove is formed.

The front boarding step 113 and the space switching cover 114 have symmetrical shapes.

On the rear side of the machine body of the upper footrest part 113b and the upper base part 114b, a side step 118 is provided for a worker to get on and off from the side of the machine body and to serve as a foothold during work. The side step 118 has a plurality of space portions formed by arranging plates vertically and horizontally within a frame, and is configured to drop the soil adhering to the sole of the worker's shoe downward. Also, between the left and right side steps 118, a central step 119 is detachably provided to serve as a foothold for an operator to board.

The floor step 122 is configured as described above.

The front boarding step 113, the space switching cover 114, the left and right side steps 118, and the center step 119 are attached independently, that is, they are not fastened together with a single attachment member (bolt or the like). As a result, when removing each step structure during partial maintenance work, there is no need to remove another step structure, which improves the efficiency of maintenance work.

At the front lower part of the front boarding step 113, a boarding/alighting assist mechanism 170 is mounted on which a worker puts his/her feet when getting on/off the front boarding step 113. - 特許庁The boarding/alighting assist mechanism 170 is positioned outside the fuselage and has an L-shape in side view. The inner support arm 172, which is L-shaped in front view and has a second projecting portion 172a projecting outward from the bent portion to the lower side of the aircraft body, and the first projecting portion 171a and the second projecting portion 172a. It is composed of a boarding/alighting assistance step 173 provided at the same time.

The outer support arm 171 is attached to the traveling vehicle body 40 together with the step support plate 111 by fastening together with fastening bolts 174 . Further, the inner support arm 172 is attached to the traveling vehicle body 40 together with the bumper plate 109a by fastening together with fastening bolts 174.

As a result, a plurality of members are tightened by the common tightening bolts 174 . mitigated.

Further, by providing the boarding/alighting assisting step 173, even if the vehicle height of the traveling vehicle body 40 is increased in accordance with the height of the ridge, the operator can place his or her foot on the boarding/alighting assisting step 173, and the front side boarding step 113 can be operated. Since it is possible to get on and off the lower footrest part 113a step by step while getting on and off by the reverse operation, there is no need to raise the foot high when getting on or off, or to jump down even more or less. reduce the burden on

Since the boarding/alighting assist step 173 is provided over the first projecting portion 171a and the second projecting portion 172a, the outer supporting arm 171 and the inner supporting arm 172 are not positioned within the lateral width of the boarding/alighting assisting step 173. The operator's feet are prevented from contacting the outer support arm 171 and the inner support arm 172 .

On the other hand, when the vehicle height of the traveling vehicle body 40 is lowered or during the planting work, not only does the getting on/off assist mechanism 170 become unnecessary, but depending on the vehicle height, the ridges may come into contact with the ridges and slopes of the ridges. There is a risk that the planting accuracy of seedlings will be reduced.

In order to prevent this, the bases of the outer support arm 171 and the inner support arm 172 are attached with double nuts (not shown), and the outer support arm 171 and the inner support arm 172 are rotated with the co-tightening bolts 174 as rotation fulcrums. It is preferable to configure the boarding/alighting assist mechanism 170 so as to be vertically rotatable.

With the above configuration, the assisting mechanism 170 can be rotated upward away from the ridge surface when unnecessary, so that the assisting mechanism 170 is prevented from collapsing the ridges, and seedling planting accuracy is maintained.

As shown in FIGS. 1 to 8, the lower portion of the inter-row switching cover 114 is rotated downward by its own weight to come into contact with the ridge surface, and when the traveling vehicle body 40 reaches the end of the ridge and stops touching the ground, it rotates further downward. A ridge edge sensor stay 182a is provided to support a ridge edge sensor 182 that moves and activates a notification device 181 that informs the operator that the edge of the field has been reached. The notification device 181 is a buzzer or a lamp attached to each part of the traveling vehicle body 40, or a communication device that notifies an operator's information terminal (tablet, smartphone, etc.).

The ridge end sensor 182 is provided with a rotatable sensor arm 183, a ridge surface grounding roller 184 is rotatably attached to the lower part of the sensor arm 183, and a ground biasing spring 185 biases the sensor arm 183 downward. is provided at the base of the sensor arm 183, and a ridge edge detection switch 186 which is turned on (or off) at a predetermined angle or more is provided. The ground urging spring 185 has its upper end attached to an angle-adjustable detection adjustment plate 187 along the elongated hole so that the operating angle can be changed according to the ridge height.

The ridge end sensor 182 is grounded on the ridge surface by adjusting the vehicle height of the traveling vehicle body 40 at the start of traveling for seedling planting work. By grounding the rotatable ridge surface grounding roller 184, the ridge surface is less likely to collapse and fine unevenness can be smoothed out, thereby improving planting accuracy of the seedlings.

Then, when the traveling vehicle body 40 continues moving forward and reaches the edge of the ridge, and the ridge surface-contacting roller 184 stops contacting the ridge surface, the biasing force of the ground biasing spring 185 and the sensor arm 183 and the ridge-surface contacting roller The sensor arm 183 rotates downward due to the weight of the sensor 184, and the ridge edge detection switch 186 is not pushed. When the ridge edge detection switch 186 is no longer pressed, the notification device 181 is energized to activate the notification device 181 and notify the operator that the vicinity of the front end of the traveling vehicle body 40 has reached the ridge edge.

In addition, when the ridge end sensor 182 detects the ridge end, the ridge still has a space for planting several strains. While the number of seedlings to be planted in the seedling supply device 43 is put into the seedling supply device 43, the stop operation is prepared.

As a result, the operator can know when the edge of the ridge is approaching without looking back, so the machine can be stopped when the seedlings are planted on the ridge. to the working row is prevented from becoming long.

In addition, when the edge of the ridge approaches, the number of seedlings to be fed into the seedling supply device 43 can be adjusted. Seedlings are prevented from being discharged to places where there is no water.

As shown in FIGS. 4, 6 and 7, the sensor arm 183 is a pair of left and right sensor arms 183a, 183a, and the left and right ridge surface contact rollers 184a, 184a are rotatably attached to the ridge surface contact rollers 184. Alternatively, left and right ridge edge detection switches 186, 186 may be provided respectively.

As a result, when one of the left and right sensor arms 183, 183 rotates downward and one of the corresponding ridge edge detection switches 186, 186 is not pressed, the notification device 181 operates to detect the ridge/BR. >Even if the ridges collapse due to wind and rain and the shape is disturbed, the edges of the ridges can be easily detected, and the operator can stop the planting operation in a timely manner.

In addition, on both the left and right sides of the front side of the traveling vehicle body 40 and on the front side of the body rather than the running wheels 44, the horizontal frame 16 is provided on the lower side of the front beam frame 110 and projects in the left and right direction of the body. A movably supported front wheel 45 is provided.

Further, the front ends of the wheel drive shafts extending outward from the transmission case 39 enter into the rotation axis position of the front portion of the traveling transmission case 38, and the transmission system of the traveling section in the transmission case 39 shifts. The power for traveling that has passed through the transmission portion is transmitted to the transmission mechanism in the travel transmission case 38 . Power for running is transmitted to the transmission axle of the running transmission case 38 via the transmission mechanism in the running transmission case 38, and the running wheels 44 are driven to rotate.

Further, the travel transmission case 38 is connected to a vertically rotating drive means for vertically rotating the running wheels 44 with the front side of the travel transmission case 38 as a fulcrum of rotation. Specifically, an upwardly extending arm 13 is integrally attached to the attachment portion of the traveling transmission case 38 to the mission case 39 , and the arm 13 is attached to the elevation hydraulic cylinder 300 fixed to the mission case 39 . It connects with both left and right sides of the connector attached to the tip of the piston rod. One of the left and right sides (right side) is connected by a connecting rod, and the other side (left side) is connected by a left/right control hydraulic cylinder that can be extended and retracted according to the inclination of the machine body.

When the lifting hydraulic cylinder 300 is actuated and its piston rod protrudes rearward of the machine body, the left and right arms 13 rotate rearward, and accordingly the travel transmission case 38 rotates downward to raise the machine body. Conversely, when the piston rod of the lifting hydraulic cylinder 300 moves forward and retracts into the cylinder, the left and right arms 13 rotate forward, and the travel transmission case 38 rotates upward accordingly. The aircraft descends.

The lifting hydraulic cylinder 300 is actuated by a ridge sensor 14 which is in contact with the ridge and operates in accordance with variations in the vertical distance between the machine body and the ridge. The operation of the ridge surface sensor 14 is the operation of detecting the height of the ridge top surface with reference to the position of the fuselage, and based on the detection operation of the ridge surface sensor 14, the fuselage is adjusted to the set height corresponding to the ridge surface height. The configuration is such that the lifting hydraulic cylinder 300 operates.

Further, when the left-right horizontal control hydraulic cylinder expands and contracts, the left-side arm 13 connected to the left-right horizontal control hydraulic cylinder rotates to move only the left-side running wheel 44 up and down, tilting the body left and right. . The left-right horizontal control hydraulic cylinders operate based on the detection result of a sensor that detects the left-right tilt of the machine body with the left-right horizontal as a reference, and the machine body is horizontally leveled.

As shown in FIGS. 1, 2 and 5, the horizontal frame 16 is mounted on the front beam frame 110 so as to be rollingly rotatable about the longitudinal axis. , a vertically long vertical frame 17 is mounted. The left and right front wheels 45 are rotatably attached to front wheel axles 18 fixed to the sides of the lower ends of the vertical frames 17 . Therefore, the left and right front wheels 45 are capable of rolling rotation about the center of the body in the front-rear direction. The vertical frame 17 is vertically adjustable with reference to the left and right sides of the horizontal frame 16, and the height of the front wheel 45 can be adjusted.

The steering handle 404 is provided at the rear part of the machine body and is located on the rear side of the machine body with respect to the transmission axle of the running wheel 44 . Specifically, it is attached to the rear end of the body frame 19 whose front end is fixed to the mission case 39 .

The fuselage frame 19 extends rearward at the center of the fuselage in the left-right direction, and also extends obliquely rearward and upward from the front-rear intermediate portion.

The steering handle 404 extends rearward in the right and left directions from the rear end of the body frame 19 , and each rear end thereof serves as a grip portion of the steering handle 404 .

In FIG. 2, the grip portion is divided into left and right portions, but the left and right rear end portions of the steering handle 404 may be connected to each other to form the grip portion.

The planting device 42 includes a plurality of beak-shaped planting tools with their tips pointing downward, and vertically moving the planting tools so that the lower ends of the planting tools are positioned above and below the field surface. A vertical movement mechanism 21 for moving, a closed state in which the lower end of the beak-shaped planting tool is closed to accept the seedlings from above and accommodate the seedlings inside, and a lower end of the planting tool is opened to the left and right to accommodate the seedlings inside. An opening/closing mechanism is provided for opening and closing the planting tool in an open state in which the planted seedlings can be released downward.

As shown in FIGS. 1 to 5, the planting device 42 of the present embodiment has a two-row planting configuration in which a first planting hopper 20a and a second planting hopper 20b are arranged side by side. The first planting hopper 20a and the second planting hopper 20b are mounted on vertical movement mechanisms 21 provided on both left and right sides of a transmission case 26 to which transmission is transmitted from the mission case 39. As shown in FIG.

Each seedling container 22 has a cylindrical body that opens upward and downward, and a bottom cover that opens and closes the opening on the lower side of the cylindrical body, and they are connected to each other in a loop shape.

The moving mechanism 23 moves the connected seedlings in an oval loop-shaped locus that is long in the left and right direction in the plan view of the machine body in a state where the connected seedling containers 22 pass above and near the left and right planting hoppers 20a and 20b. The container 22 is rotated counterclockwise.

The seedling dropping mechanism opens the bottom lid of the seedling container 22 at a position above the planting hoppers 20a and 20b corresponding to the seedling container 22.

In this embodiment, a cylindrical outer peripheral portion is formed on the outer periphery of the seedling container 22, and an engaging portion (round hole) that is rotatably connected from the outside is provided in the cylindrical outer peripheral portion, so that the two seedling containers 22 were formed. Then, the engaging portion of the connecting body is rotatably connected to the cylindrical outer peripheral portion of the seedling container 22, and the adjacent seedling container 22 is rotatably connected with the cylindrical outer peripheral portion as a rotation axis. , a plurality of seedling containers 22 are connected to each other. That is, the seedling container 22 and the connecting body are connected like an endless chain.

As a result, the seedling container 22 does not change the distance from the adjacent seedling container 22 in either the linear portion 28 that moves linearly or the arcuate portion 29 that moves in an arc. At the point where the seedlings are supplied to the planting hoppers 20a and 20b, the positional deviation relative to the left and right planting hoppers 20a and 20b of the seedling container 22 is less likely to occur, and the seedlings are appropriately supplied to ensure proper seedlings. can be planted.

The moving mechanism 23 of the seedling supply device 43 winds the seedling container 22, which is connected to each other like an endless chain, around arcuate cutouts on the outer periphery of the left and right sprockets, and removes the left and right sprockets from the transmission case 26. Each seedling containing body 22 is rotated by being driven and rotated by the power.

The circulating movement path along which the seedling container 22 circulates has a length that includes a linear portion 28 extending in the left-right direction in a plan view and an arc-shaped portion 29 curved forward or backward from the linear portion 28 by a sprocket. It has a circular shape and is arranged inside the machine body from the left and right running wheels 44 .

The seedling container 22 of the seedling supply device 43 relatively stably moves in a predetermined direction in the linear portion 28, but the distance between the seedling containers 22 narrows or widens in the arc-shaped portions 29 on both left and right sides. As a result, the driving of the seedling supply device 43 may be overloaded and damaged, or the seedling drop supply timing may become unstable. In order to prevent this, star wheels 240, 240 that are driven to rotate are provided on the inner peripheral edge of the plurality of seedling containers 22 and on both the left and right outer sides of the seedling supply device 43, respectively. Protrusions are formed at equal intervals on the outer peripheral edge of 240 . By inserting these protrusions into the gaps of the seedling containers 22, the position of each seedling container 22 when passing through the arc-shaped portions 29 on both the left and right sides of the seedling supply device 43 is maintained, thereby overloading. It prevents the occurrence of seedlings and the occurrence of deviations in the timing of seedling drop supply.

The operator sits on the work seat 46 or stands on the floor step 122 to supply seedlings to the seedling supply device 43. However, when the seedlings for replenishment run out or some other problem occurs, for example, the planting posture of the seedlings is changed. When an abnormality such as failure to plant seedlings occurs continuously, it is necessary to stop the traveling of the traveling vehicle body 40 and stop the driving of the planting hoppers 20a and 20b. Moreover, when the traveling speed and the ascending/descending pace of the planting hoppers 20a and 20b are faster than the worker's pace, it is necessary to reduce the output of the engine 41 and change the speed to facilitate work.

As shown in FIGS. 4 and 5, in order to perform the above operation while seated on the work seat 46 or without getting off the floor step 122, the front side of the seedling supply device 43 and one left and right side end of the seedling supply device 43 That is, on the right hand side of the worker seated on the work seat 46, a second engine switch 408 for switching whether or not to start the engine 41 and for performing a stop operation is provided. A second throttle lever 409 for increasing/decreasing the output of the engine 41 is provided at a position near the left and right sides of the machine body so as to be rotatable in the left and right direction of the machine body.

The second engine switch 408 is operated in the same manner as the first engine switch 407, but the engine 41 must be operated so that both the first engine switch 407 and the second engine switch 408 are turned on. shall not start.

As a result, when the operator grips the steering handle 404 at the rear of the machine body to operate the machine, the machine can be stopped by the first engine switch 407, and the machine can be mounted on the traveling vehicle body 40 when planting seedlings. When the second engine switch 408 is turned off, the engine 41 can be stopped. can interrupt actions that cause problems with

Further, since the second throttle lever 409 can be operated from the traveling vehicle body 40, there is no need to get on and off the traveling vehicle body 40 when increasing or decreasing the output of the engine 41, thereby improving working efficiency and working accuracy.

Moreover, the planting hoppers 20a and 20b on either side are arranged behind the position of the transmission axle.

The seedling supply device 43 is configured such that the seedling container 22 moves around in one turn in accordance with the left and right planting hoppers 20a and 20b to supply the seedlings.

The planting hoppers 20a and 20b are supplied with seedlings dropped from the seedling container 22 at a first drop supply position 31a and a second drop supply position 31b, respectively.

Seedling containers 22 for containing the seedlings to be dropped and supplied corresponding to the left and right planting hoppers 20a and 20b are separately provided. The bottom lid is opened only when the plants come in, and the bottom lid is not opened above the left and right planting hoppers 20a and 20b that do not correspond to each other.

That is, only when the seedling container 22 corresponding to the planting hopper 20a comes to the first drop supply position 31a, and only when the seedling container 22 corresponding to the planting hopper 20b comes to the second drop supply position 31b, each The seedlings are supplied to the corresponding planting hoppers 20a and 20b with the bottom cover opened.

In addition, the 1st drop supply position 31a and the 2nd drop supply position 31b are set as the structure which can be moved to a corresponding position, when the row spacing of planting hoppers 20a and 20b on either side is adjusted.

The operation period of the moving mechanism 23 is set to synchronize with the operation period of the vertical movement mechanism 21, and the seedling containers 22 corresponding to the left and right planting hoppers 20a and 20b are combined to form one seedling container unit. By connecting a plurality of the seedling container units, the seedling containers 22 pass through the left and right drop supply positions 31a and 31b in series while supplying the seedlings corresponding to the left and right planting hoppers 20a and 20b. The left and right planting hoppers 20a and 20b are fully supplied so that the seedlings can be supplied without leakage and the seedling container 22 to which the seedlings are not supplied after passing the left and right dropping supply positions 31a and 31b is not generated. The configuration is such that seedlings can be supplied accordingly.

The transplanter 10 of the present embodiment has a soil crushing wheel 37 used for crushing the seedlings planted by the left and right planting hoppers 20a and 20b. It is provided in the vicinity of each rear left and right both sides. The left and right soil covering crushing wheels 37 are composed of crushing arms 370, 370 which are formed by bending a single bar into a J-shape in plan view, and which are independently rotatable up and down, and the left and right crushing arms 370, 370. On the rear side, it is composed of pressing rotating bodies 371, 371 which are provided rotatably in pairs in the left and right directions.

One end portion of the suppression arm 370 located inside the vehicle body is attached to the rear portion of the traveling vehicle body 40 so as to be vertically rotatable. It is bent outward of the fuselage, further bent downward, and bent forward of the fuselage at the same vertical position as the straight portion inside the fuselage. Of the left and right suppression rotors 371, 371, the suppression rotor 371 on the outer side of the fuselage is provided on the straight portion of the outer side of the fuselage that bends toward the front side of the fuselage, and the suppression rotor 371 on the inner side of the fuselage is attached to the straight portion on the inner side of the fuselage. be done.

With the above configuration, an avoidance portion 372 projecting upward from the fuselage is formed at the rear portion of the suppression arm 370, and the left and right suppression rotating bodies 371, 371 are arranged with a left-right spacing. As a result, the seedlings planted by the planting hoppers 20a and 20b pass through the left and right intervals between the left and right crushing rotors 371 and 371, level the surrounding soil, and pass below the avoiding portion 372. It is prevented from being pushed down by the soil-covering crushing wheels 37 and 37 and disturbing the planting posture.

The left and right crushing arms 370, 370 are mounted so that the left and right positions of the machine body can be adjusted, and the crushing positions can be changed according to the row spacing setting of the planting hoppers 20a, 20b. In addition, if the right and left crushing rotors 371, 371 are configured so that their left and right positions can be adjusted, the soil around the seedlings after planting can be firmly solidified, and the seedlings will not grow poorly due to lodging or low temperature. prevented.

The transplanter of this case is provided with a work seat 46 on which a worker sits so that a worker who supplies seedlings to the seedling supply device 43 rides and performs the seedling supply work. Specifically, a work seat 46 is arranged rearward at the center position of the machine body, which is the front side of the seedling supply device 43 . The operator sitting on the work seat 46 faces the front side of the seedling supply device 43 and sits in a posture facing the rear side so that the front side of the seedling supply device 43, particularly the front side of the circular movement path of the seedling container 22, is straight. The seedling replenishment work is performed corresponding to the portion 28 .

A main clutch lever 125 is provided on the other left and right side of the control panel 47a.

In the transplanter of the present invention, the operation by the operator using the steering handle 404 at the rear of the machine body is performed when moving to a field, loading and unloading from a transportation means, storing in a warehouse, and turning at the edge of a field. . On the other hand, during seedling planting work, the worker is on the work seat 46 of the traveling vehicle body 40, and it is difficult to operate the control panel 47a of the control handle 404. FIG.

Therefore, on the traveling vehicle body 40, an on-vehicle control section 126 for the worker on the work seat 46 is provided.

As shown in FIGS. 4 and 11, a rear step 127 inclined upward toward the rear side of the machine body is provided at the lower part of the seedling supply device 43, and either the left or right side of the rear step 127, in this case the right side of the machine body (work seat). As shown in FIGS. 4, 5, and 11, an on-vehicle control section 126 is provided at the left end of the operator seated on the seat 46. As shown in FIGS.

The on-vehicle control unit 126 has a second vehicle height adjustment lever 128 arranged on the outermost side of the vehicle body for adjusting the vehicle height of the traveling vehicle body 40 to adjust the planting depth of the planting hoppers 20a and 20b. 2 A second main clutch lever 129 is arranged inside the body of the vehicle height adjusting lever 128.例文帳に追加

Since it is basically not necessary to fix the vehicle height during seedling planting work, the second vehicle height adjustment lever 128 is configured to have only the "high" position and the "low" position.

At the outer end of the rear step 127, a second vehicle height adjustment lever 128 is housed in a frame, and a vehicle height adjustment lever guide 130 formed with a display scale indicating the approximate vehicle height is inclined upward toward the front side of the fuselage. A main clutch lever guide 131 for housing a second main clutch lever 129 in a frame is provided in an upward inclined posture toward the front side of the fuselage on the inner side of the vehicle height adjusting lever guide 130 .

Note that the second vehicle height adjustment lever 128 has a larger amount of protrusion toward the front side of the vehicle body than the second main clutch lever 129 does.

In addition, the second vehicle height adjustment lever 128 and the second main clutch lever 129 are rotatable on the base side on the mounting support plate 105 on the right and left sides of the machine body (right side of the machine body) and on the front and rear beam frames 106f and 106r. If it is mounted, there is no need to provide a separate mounting member, and the number of parts can be reduced.

Further, side clutch pedals 132L and 132R for turning on and off the left and right side clutches are provided on the upper surface of the rear step 127 so as to be exposed on the other left and right side of the vehicle body, that is, on the left side of the vehicle body relative to the on-board control section 126 .

The vehicle height adjustment lever guide 130 and the main clutch lever guide 131 are arranged with a certain vertical spacing S between them and the upper surface of the side step 118 . The above-described vertical interval S is set to a degree that allows a space to be secured even when the operator's feet are inserted (for example, about 15 to 20 cm).

With the above configuration, the operator on the floor step 122 and on the work seat 46 can manually operate the planting depth and turn on/off the planting work without getting off the traveling vehicle body 40. , the work efficiency is improved and the seedling planting accuracy is improved.

In addition, by arranging the second main clutch lever 129 closer to the work seat 46 than the second vehicle height adjustment lever 128, the second main clutch lever 129 can be used for replenishing seedlings, correcting the planting state, taking a break, etc. The operator can easily reach the main clutch lever 129, and labor can be reduced.

In particular, when a problem occurs, the seedling planting operation can be immediately interrupted, the replanting operation of the seedlings becomes unnecessary, and the number of discarded seedlings that are unsuitable for growth is reduced.

In addition, since the second vehicle height adjustment lever 128 protrudes further forward than the second main clutch lever 129, the user can extend his/her arm when operating the second vehicle height adjustment lever 128 on the far side from the work seat 46. There is no need, and the labor of the operator is reduced.

By providing the left and right side clutch pedals 132L and 132R on the rear step 127, either of the side clutch pedals 132L and 132R can be operated when the traveling direction of the traveling vehicle body 40 is about to deviate from the straight traveling direction based on the ridge. is operated to temporarily disengage the corresponding side clutch, the course of the traveling vehicle body 40 can be corrected, and the seedling planting position can be prevented from meandering in the left-right direction.

In addition, the height adjustment lever guide 130 and the main clutch lever guide 131, that is, the upper and lower parts of the vehicle body control section 126 and the side step 118 are provided with a vertical space S, which facilitates the work of getting on the work seat 46. The movement of the operator's legs is not hindered, the operator can board the operation seat 46 in a comfortable posture, and labor can be reduced.

Spare seedling frames 50 capable of accommodating seedlings to be replenished to the seedling supply device 43 are provided above the transmission axles of the running wheels 44 on both the left and right sides of the work seat 46 as viewed from the side of the machine body.

The preliminary seedling frame 50 is provided with a support stay 52 on the upper part of a seedling-mounting column 51 protruding outside the traveling vehicle body 40, and the support stay 52 is capable of switching between a rotating state and a non-rotating state. An arm 53 is provided, and seedling frame frames 54, 54 in the vertical direction are arranged on the seedling mounting rotating arm 53 with an interval therebetween, and supplementary seedlings are accommodated on the same surface of the seedling frame frames 54, 54. One side end of a mounting table 55 for mounting a container such as a seedling box or a seedling tray is mounted.

Only one mounting table 55 may be provided in the vertical direction, but a plurality of the mounting tables 55 may be arranged at intervals in the vertical direction so as not to interfere with taking out the container.

The spare seedling frames 50 configured as described above are provided on the left and right sides of the traveling vehicle body 40, respectively, and the seedling mounting rotating arms 53 are rotated on the support stays 52 according to the situation.

For example, when planting seedlings, the longitudinal direction of the mounting table 55 is oriented in the longitudinal direction of the machine body, so that the seedling container can be easily removed from the mounting table 55 and the empty container can be easily returned, thereby improving work efficiency. can be improved.

In this position, the mounting bases 55 are located on both the left and right sides of the traveling vehicle body 40, so that the operator can easily grasp the end of the portion of the traveling vehicle body 40 that can be ridden, and the operator's feet protrude from the traveling vehicle body 40, thereby preventing the operator from standing up. is prevented from collapsing.

Also, when an operator gets on and off the traveling vehicle body 40, the seedling mounting rotating arm 53 is rotated by about 90 degrees.

As a result, spaces for getting on and off are formed on both the left and right sides of the traveling vehicle body 40 .

The operator can also get on and off the traveling vehicle body 40 from the front side of the machine body. When positioned on the side, the operator can use the seedling frame frames 54, 54 as handrails, so that the operator can smoothly get on and off the traveling vehicle body 40. - 特許庁

In addition, when the seedling containers are loaded onto or taken out from the mounting table 55, there is no member that hinders the loading or unloading of the containers from the rear side of the machine body, so the working efficiency is improved.

The work seat 46 is attached to the traveling vehicle body 40 in a U-shape when viewed from the front or the rear, and of the seat frame 49 straddling the machine body cover 48 covering the upper part of the engine 41 etc., the portion in the left-right direction of the machine body. mounted on top of the The bases of left and right seat stays 49a are attached to the upper part of the seat frame 49 toward the front of the machine body. It is mounted so as to be rotatable in the front-rear direction.

As a result, the work seat 46 can be placed in a posture in contact with the vicinity of the front end of the seedling feeder 43, so sand and rainwater can be prevented from adhering to the seated portion of the worker when the work is interrupted.

BACKGROUND ART When seedlings are transplanted into a field, so-called irrigation work is sometimes performed in which water is supplied to the vicinity of the planted seedlings in consideration of conditions such as the soil quality of the field, the surrounding water environment, or the weather before the work.

As shown in FIGS. 1 to 4, the present transplanter is provided with water tank holders 601 for loading water tanks 600 on the left and right traveling transmission cases 38, 38, respectively.

The water for irrigation stored in the water tank 600 is pumped up by the operation of the irrigation pump 700 provided at the bottom of the traveling vehicle body 40 and near the front and rear center of the machine body, and the position where the planting hoppers 20a and 20b plant the seedlings. discharged to The irrigation pumps 700 are arranged in accordance with the number of the planting hoppers 20a and 20b, and are arranged on the left and right sides of the traveling vehicle body 40 with an interval therebetween.

A hose may be attached to the irrigation pump 700 to discharge water from the water tank 600 via the irrigation pump 700 and from the water spray nozzle 710. A portion of the sent water may be returned to the water tank 600 side. As a result, the amount of irrigation water supplied to the field each time is reduced, and there is a risk that the growth of seedlings will be delayed due to water shortage, or that the quality of the harvest will be reduced due to poor growth.

In order to prevent this, check valves 720 for restricting the water supply direction to one direction are provided at the lower parts of the outer sides of the left and right side steps 118, respectively, and the water tank 600 and the water supply side of the check valves 720 are connected by a water suction hose 721. At the same time, the drain side of the check valve 720 and the drain nozzle 710 are connected with the drain hose 722 . Also, the check valve 720 and the irrigation pump 700 are connected by a relay hose 723 .

More specifically, as shown in FIG. 9, first, a water intake check valve 724 and a water discharge check valve 725 directed in a direction that allows water to flow from the front side to the rear side of the machine body are arranged vertically and placed at the outer end of the machine body of the side step 118. Attached to the bottom of the part. One side of the water suction hose 721 is inserted into the water tank 600, the other side is connected to the inlet of the water suction check valve 724, that is, the front side of the machine body, and the one side of the water discharge hose 722 is connected to the outlet of the water check valve 725. That is, it is connected to the rear side of the fuselage, and the other side is connected to the drainage nozzle 710 .

The irrigation pump 700 is attached to the base side of the first relay hose 723a in the lateral direction of the machine body, and to the end side is attached the convergence port of the three-pronged branch joint 723d. A second relay hose 723b is provided between the water intake port of the branch joint 723d and the outlet of the water intake check valve 724 (on the rear side of the aircraft body), and the drain port of the branch joint 723d and the inlet of the drainage check valve 725 (on the front side of the aircraft body). ), a third relay hose 723c is provided.

Although the drainage nozzle 710 may supply water directly to the farm field, irrigation water is introduced from the upper openings of the planting hoppers 20a and 20b with a certain amount of force, and the water adheres to the inside of the planting hoppers 20a and 20b. It is good also as a structure utilized for the removal of the mud which carried out.

This eliminates the need for a scraper that gets into the planting hoppers 20a and 20b while they are open and removes mud, thereby reducing the number of parts.

If the scraper draws a predetermined trajectory in conjunction with the elevation of the planting hoppers 20a and 20b, it is possible to reduce the parts of the mechanism for moving up and down along the predetermined trajectory. is simplified.

Furthermore, since the mud can be returned to the field by irrigation, it is possible to prevent the outside of the field from being contaminated with mud and reduce the outflow of nutrients in the field.

With the above configuration, the check valves 720 are arranged in the space on the left and right outer sides of the fuselage, so when problems such as clogging occur, it is easy to investigate the cause and perform maintenance work, reducing labor and shortening work time. .

In addition, since the water intake check valve 724 and the water discharge check valve 725 are arranged so that the water supply direction is the same, it is difficult to make a mistake in the mounting direction during assembly work after disassembly, and work efficiency is improved.

In addition, by arranging the check valve 720 on the rear side of the water tank 600, on the front side of the planting hoppers 20a and 20b, and on the outside of the irrigation pump 700, the water absorption hose 721, the drainage hose 722, and the first relay hose 723a, the second relay hose 723b, and the third relay hose 723c can be arranged so as to minimize bending and to avoid overlapping.

If the water absorption check valve 724 and the water discharge check valve 725 are made into transparent cylinders so that the spring inside and the ball for preventing backflow can be checked from the outside, the direction of water supply can be visually recognized, and erroneous installation is less likely to occur.

The water supply by the irrigation pump 700 supplies water to the planting hoppers 20a and 20b immediately before planting the seedlings, and prevents poor growth due to lack of moisture after growing. During the planting work using the transplanter of the present invention, a plurality of seedling trays and seedling boxes are loaded in the spare seedling frame 50 in order to shorten the interruption time of the planting work due to the seedling replenishment work. During drying or the like, the seedling mats loaded in the spare seedling frame 50 and the seedlings in the seedling box may dry out over time and fall into a lack of moisture.

By irrigating the seedlings with insufficient moisture at the time of planting, the moisture shortage can be resolved at that point. There is a risk that it will become insufficient and cause poor growth and wilting.

Water is supplied to the seedlings loaded in the spare seedling frame 50 to prevent the seedlings from drying out. Become. In addition, in a working environment with high temperatures such as in summer, the seedlings are affected by the heat due to the water droplets adhering to the stems and leaves being heated, and there is a risk that the seedlings will become even weaker.

A preliminary seedling watering device 200 may be provided to prevent the above problem. This preliminary seedling watering device 200 will be described below. The spare seedling frames 50 are provided on the left and right sides of the traveling vehicle body 40, respectively, but since both have the same structure, description of the left and right is omitted.

As shown in FIGS. 19 to 22, a main irrigation pipe 201 is provided in the front-rear direction at the center of the mounting table 55 of the spare seedling frame 50. are provided with sub-irrigation pipes 202 and 203, respectively. The main irrigation pipe 201 and the left and right sub irrigation pipes 202 and 203 are arranged below the mounting surface of the mounting table 55 in order to maintain the attitude of the seedling trays and seedling boxes to be loaded. As a result, the seedling trays and seedling boxes are arranged so that they are less likely to fall due to vibrations during work or tilting of the machine. is prevented from becoming unsuitable for

The main water pipe 201 and the left and right sub water pipes 202 and 203 are connected to each other by joint pipes 204 in the portions of the mounting table 55 that are not hollowed out so that water can move between the pipes. An orifice (not shown) or the like may be provided inside the joint pipe 204 to reliably send water from the front side to the rear side of the fuselage and prevent backflow.

A water absorption coupling 206 for connecting a water supply hose 205 to which water is sent from an irrigation pump 700 is provided on the front end side of the main irrigation pipe 201 . An orifice (not shown) or the like may also be provided inside the water absorption coupling 206 to reliably send water from the front side to the rear side of the fuselage without weakening the water force and to prevent backflow.

Since it is necessary to send water upward from the irrigation pump 700 to the spare seedling frame 50, the irrigation pump 700 is driven using a valve motor 730 or the like to ensure a high water supply pressure and to supply stable water. is supplied.

Of the main irrigation pipe 201 and the left and right sub irrigation pipes 202 and 203, the side closer to the seedling supply device 43 and the planting hoppers 20a and 20b, in FIGS. Drainage valves 207 for discharging water that has reached the front side are arranged at intervals from each other. On the other hand, a spray nozzle 208 for discharging water in the form of a fine mist is provided on the front side of the body from the arrangement range of the drain valve 207 .

The drain valve 207 has a plurality of water discharge holes (not shown), and is configured to suppress the height and force of the water blowing up. The structure is such that a small amount of water permeates.

As a result, the root ball consisting of the roots of the seedlings and the culture soil is destroyed by the force of the water, preventing the seedlings from becoming unsuitable for transplantation. is prevented. In addition, the splashed water is prevented from falling on the worker sitting on the work seat 46. - 特許庁

In addition, the spray nozzle 208 may be sprayed straight above the fuselage, but if it is arranged in a posture slightly facing the work seat 46, a curtain of fog can be formed around the work seat 46, and the sensible temperature of the operator can be reduced. can be reduced, it is possible to reduce worker fatigue even in a high-temperature working environment.

In addition, by making water into a fine mist (eg, 16 nanometers in diameter), it becomes very easy to evaporate, so even if it comes into contact with the worker's clothes, not only does it cause discomfort, but also the heat of vaporization It can cool the body and reduce fatigue caused by work.

Even if it adheres to the seedlings, it evaporates before it is heated, so the seedlings are less likely to be damaged.

In the above configuration, since the spray nozzles 208 are provided on the mounting table 55, excessive water is supplied to the seedlings if a fog curtain is formed all the time or for a long period of time.

Therefore, a spray nozzle 208 is also provided around the lower part of the work seat 46, a spray hose (not shown) for supplying water to this spray nozzle 208 is provided, and a spray valve motor 208a for switching water supply to the spray nozzle 208 is provided. , continuously for a certain period of time, or continuously until the sheet spray switch 208b is turned on and off.

By irrigating the seedlings loaded in the spare seedling frame 50, it is possible to prevent the seedlings from becoming dehydrated before planting. Like the water supplied to the conventional planting hoppers 20a, 20b, it is slowly absorbed after planting.

As in conventional irrigation, if water is supplied each time the vertical movement mechanism 21 is operated, an excessive amount of water will be supplied to the seedlings, causing root rot and fragile rootballs. It may become unsuitable for transplantation using a transplanter. Therefore, the operation of the valve motor 730 must be performed when the number of reciprocating vertical movements of the vertical movement mechanism 21 reaches a predetermined number, or it must be completely independent.

However, when the amount of water supplied by the preliminary seedling watering device 200 is limited to the extent to prevent drying of the seedlings, and water is supplied to the planting hoppers 20a and 20b each time the vertical movement mechanism 21 moves vertically once. It is desirable that the up-and-down movement mechanism 21 and the irrigation pump 700 are connected with a cable or the like as in the conventional art, and irrigation is performed.

In order to avoid excessive water supply, as shown in FIG. By operating the valve switch 731, the corresponding valve motor 730 operates for a certain period of time or a certain number of times to supply water.

As a result, water can be arbitrarily supplied when the operator determines that drying of the seedlings is progressing or before taking out the seedling tray or seedling box from the spare seedling frame 50. It is possible to prevent the seedlings to be used from becoming insufficient in moisture and causing poor growth and wilting.

Alternatively, as shown in FIG. 24, a thermometer 209 is provided on the traveling vehicle body 40 in order to allow the operator to concentrate on the operation of feeding seedlings into the seedling supply device 43. Alternatively, the valve motor 730 may be actuated when the timer 211 incorporated in the control device 210 continues to detect a temperature equal to or higher than a predetermined value while the timer 211 measures the predetermined time.

As a result, when the temperature of the work environment rises, the supply of water to the seedlings and the cooling of the vicinity of the work seat 46 can be automatically performed, so that the labor of the operator is reduced and the seedling supply device 43 is supplied with water. Mistakes in seedling input are suppressed, and manual planting work becomes unnecessary.

Even if the temperature does not exceed a predetermined value, dry weather may occur easily if the sun is strong due to fine weather. Therefore, as shown in FIG. 24, an illuminance meter 212 is provided on the traveling vehicle body 40, and when this illuminance meter 212 detects illuminance equal to or greater than a predetermined value, a timer 211 built into the control device 210 measures a predetermined time. The valve motor 730 may be operated when the illuminance of a predetermined value or more is continuously detected.

As a result, when the illuminance of the work environment becomes high, the supply of water to the seedlings and the cooling of the vicinity of the work seat 46 can be automatically performed, so that the labor of the operator is reduced and the seedling supply device 43 is supplied with water. Mistakes in seedling input are suppressed, and manual planting work becomes unnecessary.

In the example of using either the thermometer 209 or the illuminance meter 212, the operation of the valve motor 730 is limited by the timer 211 in order to prevent oversupply of water. Also, water is not supplied continuously.

Furthermore, until the timer 211 finishes counting a certain operation check time after the operation of the valve motor 730 is stopped, even if the temperature or the illumination reaches a certain value or more, the operation signal of the valve motor 730 is not transmitted. By doing so, water is supplied many times in a short period of time to prevent excessive supply.

At this time, when the valve switch 731 is operated, the operation of the valve motor 730 may be turned on and off ignoring the count of the timer 211 so that water can be supplied at the timing determined by the operator.

As a result, it is possible to prevent the valve motor 730 from being inoperable and have to wait to take out the seedling tray or seedling box from the spare seedling frame 50, thereby preventing a decrease in work efficiency.

The thermometer 209 and the illuminance meter 212 may be used together, and only when a high temperature and high illuminance are detected, the valve motor 730 may be operated to supply water and prevent drying of the seedlings. .

Depending on the type of seedling, it does not require a lot of water, and depending on the composition of the soil that forms the root ball, the water retention capacity is high, so it is necessary to continue working in a high temperature and high illumination environment. Since there is a possibility of falling into a shortage, water can be supplied when it is really needed, and poor growth and wilting can be prevented.

The drain valve 207 and the spray nozzle 208 are configured to be individually switchable to discharge water, and to be configured to be able to change the supply amount and supply position of water. When these valves 207 and 208 are closed more than a certain amount, or when water discharge becomes difficult due to contact with the seedling tray or seedling box, the internal pressure of the main irrigation pipe 201 and the sub-irrigation pipes 202 and 203 increases, and the water supply hose 205 backflow of water may occur, which may cause damage such as water leakage.

In order to prevent this, as shown in FIGS. 19, 20 and 22, a return valve 213 connected to the rear end of the main watering pipe 201 is provided at the rear of the mounting table 55 and at the left-right center. The return valve 213 is provided with a reflux hose 214 so that when water flows in, the water is returned to the water tank 600 via the reflux hose 214 .

The return valve 213 functions as a wall that pushes water back to the main irrigation pipe 201 when the internal pressure is less than a certain value, and opens in proportion to the pressure when the internal pressure exceeds a certain value to secure a water passage to the return hose 214. do.

As a result, it is possible to prevent water from leaking from the water discharge valve 207 and the spray nozzle 208 due to an increase in internal pressure, and to prevent the water supply hose 205 from coming off due to backflow pressure. Damage to the irrigation device 200 is prevented.

As shown in FIGS. 20 to 22, in the case where the preliminary seedling frame 50 has a plurality of mounting bases 55 in the vertical direction, a preliminary seedling watering device 200 is provided on the uppermost mounting base 55 . This is because the seedling trays and seedling boxes placed on the uppermost placement table 55 are particularly susceptible to the effects of sunlight and lose moisture most quickly, while the seedlings placed on the middle and lower placement tables 55 This is because the trays and seedling boxes are protected from the sun by the mounting table 55 on the upper stage, and are less likely to lose moisture.

Furthermore, as shown in Fig. BR>P9, hands are passed through the placement table 55 when taking out the seedling trays and seedling boxes, and soil and foreign matters that have fallen from the seedling trays and seedling boxes are dropped downward. Since a plurality of notch holes are formed, part of the water supplied by the preliminary seedling watering device 200 falls through these notch holes into the seedling trays and seedling boxes below. Another reason is that there is little need to provide the device 200 .

In this configuration, the number of the main watering pipe 201, the sub-watering pipes 202, 203, the joint pipe 204, the plurality of water discharge nozzles 207 and the spray nozzles 208 is limited, and the water supply hose 205 and the return hose 214 do not need to be branched. , there is an effect of preventing an excessive increase in cost.

On the other hand, there may be a work environment in which water needs to be supplied to each of the mounting tables 55 arranged in a plurality of upper and lower stages. Therefore, as shown in FIGS. 25 and 26, each mounting table 55 has a main irrigation pipe 201, sub irrigation pipes 202 and 203, a joint pipe 204, a water absorption coupling 206, a plurality of water discharge nozzles 207 and spray nozzles 208, and a return valve. 213 are provided, and a plurality of water supply hoses 205 are connected via water supply branch joints 215 and attached to the water absorption couplings 206 of the respective mounting bases 55 .

Further, the circulation hose 214 is also divided into a plurality of pieces, which are connected via a circulation branch joint 216 and attached to the return valve 213 of each mounting table 55 .

As a result, water can be supplied to all of the mounting tables 55, so that the seedlings can be prevented from weakening due to lack of water when the planting work is carried out for a long period of time in a high-temperature, high-illumination working environment. Occurrence of withering is prevented.

Since the amount of water consumption increases, if possible, the capacity of the water tank 600 should be increased, and the irrigation pump 700 and the valve motor 730 should have a pumping power capable of lifting more water at once. It is desirable to have

The planting speed of the transplanter may drop below 1 km/h depending on the setting in order to ensure reliable planting. Since it runs at a low speed, insects are likely to fly, especially in the summer, which can be a factor that interferes with the work of workers.

In order to prevent interference by insects, it is conceivable that an appropriate amount of a chemical solution containing an insect repellent component is put into the water tank 600 and, in particular, sprayed in the form of a mist by the spray nozzle 208 to make it difficult for insects to get around the operator. In addition, it is desirable to use a plant-derived chemical solution extracted from mint or the like, which does not pose a problem even if it adheres to the human body or seedlings, but rather can temporarily give an insecticidal effect to the seedlings.

When a small amount of chemical solution is put into the large-capacity water tank 600, if it is not mixed well, the insect repellent effect may be biased. Therefore, as shown in FIGS. A liquid medicine bottle 218 is set here so that the contents can be released. A water supply hose 205 is attached to the chemical solution mixing box 217 in a divided manner so that water containing the chemical solution is sent.

It is desirable that the chemical solution bottle 218 described above has a structure in which the content flows out even when it is filled with water.

As described above, it is possible to prevent insects from approaching the surroundings of the worker, so that the operator can concentrate on the work, and at the same time, it is difficult for insects to approach the planted seedlings, thereby preventing the seedlings from withering due to feeding damage or disease damage.

The operation of the valve motor 730 naturally requires electricity. must be sourced from somewhere.

Both the battery change and the installation of the power generator lead to an increase in cost, but it also leads to the electrification of the airframe, which may reduce fuel consumption.

As an example of the power generation device 220, as shown in FIG. 29, a water turbine blade 221 that contacts the moving fluid is attached to the lower end of a rotating shaft 222, and a columnar magnet 223 is attached to the upper portion of the rotating shaft 222. . A coil 225 is circumferentially arranged on the inner peripheral surface of a casing 224 in which a magnet 223 is housed.

The water turbine blades 221 are inserted into the second relay hose 723b or the third relay hose 723c, or both, and a sealing material 227 is attached to the insertion portion to support the rotation shaft 222 so as to be rotatable and prevent water leakage. do.

Since the power generation device 220 described above generates power by rotation due to the flow of water, it is conceivable to arrange it at a location where the water force can be obtained efficiently.

As shown in FIG. 30, the power generator 200 is placed either immediately before the inlet of the irrigation pump 700 or just after the outlet, or both. In the vicinity of the suction port and the discharge port of the irrigation pump 700, the flow speed of water is high due to the force of mechanical suction and discharge.

On the other hand, if the shape of the water turbine blades 221 and the support of the rotating shaft 222 are appropriate, an excessive water flow rate is not necessary, and cavitation causes wear and damage to the water turbine blades 221 and the rotating shaft 222 .

Therefore, as shown in FIG. 31, the power generator 200 is located inside the second relay hose 723b or the third relay hose 723c, or both, and at a position spaced from the suction port or the discharge port of the irrigation pump 700, or both. Deploy. The spaced position is the downstream side of the water intake check valve 724 on the suction port side, and the upstream side of the drainage check valve 725 on the discharge port side.

As a result, the water with which the water turbine blades 221 come into contact can be water before it is accelerated by the influence of suction, water that has been decelerated away from the discharge port, or both, so strong cavitation is generated. Therefore, damage to the power generation device 220 is prevented.

In addition, since the water is decelerated by contact with the water turbine blades 221, cavitation in the water supply path can be reduced, and deterioration of the durability of the water supply path can be prevented.

The electricity generated by the generator 220 charges the auxiliary battery 230 as shown in FIG. However, if the auxiliary battery 230 is not charged with a certain amount of electricity, the valve motor 730 cannot be operated and the irrigation pump 700 may not operate when needed.

In order to deal with this problem, electric connectors 232 and 233 are connected to the auxiliary battery 230 and the main battery 231, respectively, and if the main battery 231 side has remaining power even after the engine 41 or the like is started, electricity is transferred to the auxiliary battery 230. It is good also as a structure which carries out. Also, when the power connectors 232 and 233 are connected, when the charge amount of the main battery 231 decreases and the auxiliary battery 230 has a surplus power, the auxiliary battery 230 conversely transfers electricity to the main battery 231. .

It should be noted that when the connection between the current-carrying connectors 232 and 233 is released, the above-mentioned electricity is not interchanged.

The working environment of the transplanter is often outdoors or in a vinyl house, both of which are environments where sunlight can be obtained. Therefore, as shown in FIGS. 32 and 33, a solar panel 234 is mounted on the transplanter to generate electricity using sunlight while the transplanter is moving to the field and during work, and the auxiliary battery 230 is charged with this electricity. can be considered.

In FIG. 33, the solar panel 234 is arranged in the empty space of the seedling supply device 43, but it may be arranged in a position where sunlight is likely to be received, such as the upper part of the cover of the engine 41. You can place each. In addition, if the solar panel 234 is not fixed but detachable, it can be removed in a situation where power generation cannot be expected, such as rainy or cloudy weather. .

Alternatively, it is conceivable to use a method in which a dynamo 236 equipped with a hand-cranked crank 235 is connectable to the auxiliary battery 230, and an operator manually generates and charges the battery.

In this configuration, the operator can generate power as much as possible without being influenced by conditions such as weather, so it is possible to prevent the inability to continue planting work due to insufficient charging.

The power generation described above may be wasted unless the current state of charge of the main battery 231 and the auxiliary battery 230 is known. Therefore, as shown in FIG. 33, a battery indicator 237 should be provided in a place that is easily visible to the operator, for example, on the surface facing the work seat 46 of the seedling supply device 43, so that the charge status can be visually grasped.

This eliminates unnecessary power generation work, especially the work of turning the manual crank 235, thereby preventing an excessive increase in the labor of the operator. Also, when the amount of charge in the main battery 231 is fundamentally insufficient, it becomes easier to think of a countermeasure such as replacing the main battery 231 itself, so work is less likely to be interrupted.

It should be noted that the battery heats up during charging, but in high temperature conditions such as in summer, the temperature is likely to rise further due to the influence of the outside air, and the battery may become unsuitable for charging. In order to prevent the temperature of the main battery 231 and the auxiliary battery 230 from rising, as shown in FIG.

The heat absorbing surface 238a of the Peltier element 238 faces the main battery 231 and the auxiliary battery 230, and the heat generating surface 238b faces the opposite side. shall be A cover 239 with slits for ventilation is provided on the outside of the heat generating surface 238b to prevent an operator from accidentally touching the heat generating surface 238b and to suppress overheating of the heat generating surface 238b due to ventilation.

As a result, the heat of the main battery 231 and the auxiliary battery 230 can be absorbed by the heat absorbing surface n238a and the heat can be discharged from the heat generating surface 238b, thereby preventing charging from being stopped due to overheating.

When the temperature difference between the heat absorbing surface 238a and the heat generating surface 238b of the Peltier element 238 increases, even a small amount of electricity is generated due to the Seebeck effect. As a result, the consumed electricity can be supplemented, so that the shortage of electricity is less likely to occur.

Alternatively, as shown in FIG. 35, a cooling fan 240 rotated by an electric motor 241 is provided beside the main battery 231 and the auxiliary battery 230, and is rotated continuously or intermittently to cool the main battery 231 and the auxiliary battery 230. It is good also as a structure which carries out. A slitted cover 239 is attached to prevent contact of the cooling fan 240 by an operator and to prevent dust.

As a result, the cooling air can cool the main battery 231 and the auxiliary battery 230, thereby preventing the charging from being stopped due to overheating.

The Peltier element 238 or the cooling fan 240 is energized from the auxiliary battery 231, and is energized only when there is a surplus of charge (for example, 50% or more). Alternatively, if a temperature sensor (not shown) is provided for the main battery 231 and the auxiliary battery 230, and a configuration is adopted in which power is supplied for a certain period of time when a temperature determined to require cooling is detected, electricity will be consumed only when necessary. , insufficient charging is less likely to occur.

INDUSTRIAL APPLICABILITY The transplanter according to the present invention can prevent drying of seedlings and transplant them into a field in a state suitable for growth, and thus has high industrial applicability.

20a planting hopper (planting device)
20b planting hopper (planting device)
40 Running vehicle body 46 Work seat 50 Spare seedling frame 55 Mounting table 200 Spare seedling watering device 201 Main watering pipe (watering pipe)
202 Sub irrigation pipe outside the fuselage (irrigation pipe)
203 Sub irrigation pipe inside the fuselage (irrigation pipe)
205 water hose (water pipe)
207 water nozzle (water discharge member)
208 spray nozzle (water discharge member, spray member)
209 thermometer (environmental measurement member)
210 control device 212 illuminance meter (environment measurement member)
217 chemical mixing box (chemical mixing member)
220 Power generator 230 Auxiliary battery (battery)
231 main battery (battery)
600 water tank 700 irrigation pump (irrigation device)
730 valve motor (irrigation actuator)

Claims (1)

Planting devices (20a, 20b) for planting seedlings in a field on a traveling vehicle body (40), spare seedling frames (50) for loading seedling trays and seedling boxes for accommodating supplementary seedlings, and water for growing seedlings. In a transplanter provided with an irrigation device (700) that supplies
A preliminary seedling watering device (200) for supplying water from the watering device (700) to the seedlings in the seedling tray and the seedling box loaded in the preliminary seedling frame (50) ,
The preliminary seedling watering device (200) is provided with a main watering pipe (201) extending in the front-rear direction in the left and right central part of the mounting table (55) of the preliminary seedling frame (50). Sub watering pipes (202, 203) are provided on both sides,
The main irrigation pipe (201) and the left and right sub-irrigation pipes (202, 203) are respectively connected by a joint pipe (204), and configured to allow water to move between each pipe,
The main irrigation pipe (201) and the sub-irrigation pipes (202, 203) are equipped with a drainage valve (207) that forms a plurality of water discharge holes for discharging water, and a preliminary A spraying member (208) is provided near the front side of the seedling frame (50) and sprays water in the form of a mist,
The irrigation device (700) and the main irrigation pipe (201) are connected with the water pipe (205),
A work seat (46) on which an operator rides is provided near the front side of the traveling vehicle body (40) in the traveling direction, and the spray member (208) is arranged in a posture facing the work seat (46),
A spray member (208) and a spray hose for supplying water to the spray member (208) are also provided around the lower part of the work seat (46), and a seat spray switch (208b) for switching water supply to the spray hose side and a spray valve motor. (208a) is provided,
By arranging the main watering pipe (201), the left and right sub watering pipes (202, 203), and the drain valve (207) below the mounting surface of the mounting table (55), the preliminary seedling watering device ( 200) permeates through holes formed in the bottom of the seedling tray or the seedling box,
A transplanter characterized in that a drain valve (207) and a spray nozzle (208) are individually configured to be able to switch the release of water and to be configured to be able to change the amount of water supplied.