JP7226413B2 - transplanter - Google Patents

Description

TECHNICAL FIELD The present invention relates to a transplanter for transplanting vegetable seedlings such as onions and lettuce into fields.

Conventionally, there has been known a transplanter equipped with a chemical supply device for planting seedlings in a field with a planting device and supplying chemical agents such as fertilizers and fungicides to the vicinity of the position where the seedlings are planted (Patent Document 1).

JP-A-2010-46041

In the transplanter of Patent Literature 1, the chemical supply device is provided on a step of the traveling vehicle body, and the supplied chemical is sent into the planting device via a bendable supply hose. As a result, the chemical agent is supplied to the field together with the planted seedlings, so that the planted seedlings can be prevented from being damaged by diseases and pests, and the lack of fertilizer necessary for growth can be prevented.

However, since the chemical supply device is arranged at a position greatly spaced upward from the farm field and at a position greatly spaced forward from the planting device, it is difficult to reach the planting device with the supply hose. You have to bend it several times. As a result, when the chemical passes through a large curved portion of the supply hose, the chemical is temporarily retained at the curved portion, or is caused to flow backward by contact with the inner wall surface, causing the chemical to reach the surface of the ground instead of the soil. There is a problem that the effect of the chemical component is quickly lost due to the supply of the chemical, and a problem that the seedling dies when the chemical comes into direct contact with the seedling.

In particular, the supply hose may be arranged to require multiple bends to avoid interfering with the operation of the lifting link mechanism that raises and lowers the planting device, causing clogging of chemicals in the supply hose or during guidance. The frequency of stagnation increases, and the amount of chemical supplied becomes less than the set amount, or the chemical is supplied to a position far from the planting position of the seedling, and the effect of the chemical is not obtained sufficiently, resulting in poor growth and harvest. There is a problem that the quality and yield of rice are reduced.

In consideration of the conventional problems, the present invention provides a transplanter capable of stably supplying a set amount of chemicals by narrowing the distance between the chemical supply device and the seedling planting position and reducing the bending of the supply hose. intended to provide

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

The invention according to claim 1 comprises planting devices (20a, 20b) for planting seedlings on a traveling vehicle body (40), and a suppression device (37) for leveling the circumference of the seedlings planted by the planting devices (20a, 20b). ) and a chemical supply device (500) for supplying a chemical agent to the vicinity of the seedling planting position, wherein the chemical supply device (500) is supported by the suppression device (37) and the traveling vehicle body (40). The suppression device (37) is configured to move up and down together with the suppression device (37), and the suppression device (37) is attached to a suppression frame (370) rotatably provided on the traveling vehicle body (40) and the suppression frame (370). A support frame (503) for the medicine supply device (500) is provided on the suppression frame (370), and a suspension frame (402) is provided on the handle frame (402) of the traveling vehicle body (40). (512) is provided, a load adjustment member (517) is provided between the support frame (503) and the suspension frame (512) to receive the load of the medicine supply device (500), and the suspension frame (512) has , a mounting hole (516) for mounting a load adjusting member (517) is formed in the left-right direction, and the planting device (20a, 20b) is configured to be positionally adjustable in the left-right direction of the body,
An extension suspension frame (519) can be attached to the left and right sides of the suspension frame (512), and the extension attachment hole (520) is formed in the extension suspension frame (519) in the left and right direction. The transplanter is characterized in that it has formed .

In the invention according to claim 2, the crushing frame (370) is provided with an attachment portion (374a) for a weight (374) for adjusting the crushing load, and the support frame (503) is provided with the weight (374). 2. The transplanter according to claim 1, characterized in that a mounting hole (374b) into which the mounting portion (374a) to which the is attached is formed .

In a first related invention related to claim 1 or 2 , the crushing frame (370) forms an upward projection (372a) on the rear side of the fuselage for avoiding planted seedlings, and the upward projection (372a) is provided with the support frame (503), and the planting device (20a, 20b) planted the drug discharged from the drug supply device (500) below the mounting position of the support frame (503). A supply nozzle (510) for guiding to the vicinity is attached, and a supply hose (509) having a smaller diameter than the supply nozzle (510) is provided between the drug supply device (500) and the supply nozzle (510). It was made into a transplanting machine with characteristics.

In a second related invention related to the first related invention , the crushing frame (370) is formed with an attachment portion (374a) for a weight (374) for adjusting the crushing load, and the support frame (503) ) is formed with an attachment hole (374b) into which an attachment portion (374a) to which the weight (374) is attached can enter.

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According to the first aspect of the invention, the chemical supply device (500) is provided in the suppression device (37) for leveling the field where the seedlings are planted. can be arranged, the distance over which the medicine is guided is shortened, and the supply amount of the medicine is prevented from becoming insufficient due to retention or clogging.

In addition, even if the chemical supply device (500) is attached, the suppression device (37) moves up and down, so that the suppression device (37) can rotate up and down according to the unevenness of the field. In addition, it is possible to prevent the crushing device (37) from being caught on the convex part and disturbing the running or roughening the field.
In addition, by receiving the load of the support frame (503) on which the drug supply device (500) is provided by the load adjusting member (517) provided on the suspension frame (512), the suppression device (37) is moved to the drug supply device (500). Since it can be turned up and down without being affected by the weight of the plant, the soil lifted up during planting can be properly compacted.
In addition, when the suppressing device (37) comes into contact with the convex portion, it cannot be rotated upward, and it is prevented from being caught on the convex portion to disturb the running or damage the field.
In addition, by enabling the load adjustment member (517) to be attached to the extended attachment hole (520) of the extended suspension frame (519), the lateral position of the planting device (20a, 20b) can be changed anywhere. The load adjustment member (517) can receive the load of the medicine supply device (500) even when the load is adjusted.

According to the invention according to claim 2, in addition to the effect of the invention according to claim 1, the weight (374) can be easily attached and detached while the medicine supply device (500) is attached, so that the crushing load can be optimized. This prevents the soil around the planted seedlings from becoming too hard and causing poor growth .

In addition, it is possible to prevent the seedlings from being overturned by the wind or the like because the soil around the planted seedlings is not sufficiently compacted, and to prevent the growth of the seedlings from being disturbed due to contact with the roots of the seedlings by low-temperature air.
In addition, when attaching and detaching the medicine supply device (500), there is no need to attach and detach the mounting portion (374) from the suppression frame (370), thereby reducing the number of work steps.

Further, according to the first related invention related to claim 1 or 2 , in addition to the effect of the invention according to claim 1 or 2 , the support frame (503) is attached to the upward protrusion (372a) of the suppression frame (370). By providing the device, it is possible to prevent the chemical feeder (500) from coming into contact with the planted seedlings, thereby preventing the seedlings from falling down or being damaged.
In addition, by providing the supply hose (509) between the drug supply device (500) and the supply nozzle (510), the supply hose (509) is arranged in a substantially straight line in the vertical direction, so bending hardly occurs. , the drug is prevented from stagnation in the middle of supply.
In addition, since the supply hose (509) has a short vertical length and is supported at two points, the supply hose (509) can be prevented from swinging greatly due to the vibration of the machine body and wind. It is possible to prevent the supply from stagnating and the supply position from becoming far from the seedlings.
In addition, since the supply hose (509) has a smaller diameter than the supply nozzle (510), the supply hose (509) can be easily attached and detached. It can be carried out.

Further, according to the second related invention related to the first related invention , in addition to the effects of the invention related to the first related invention , the weight (374) can be easily attached and detached while the medicine supply device (500) is attached. Therefore, by optimizing the crushing load, it is possible to prevent the soil around the planted seedlings from becoming too hard and causing poor growth.

In addition, it is possible to prevent the seedlings from being overturned by the wind or the like because the soil around the planted seedlings is not sufficiently compacted, and to prevent the growth of the seedlings from being disturbed due to contact with the roots of the seedlings by low-temperature air.

In addition, when attaching and detaching the medicine supply device (500), there is no need to attach and detach the mounting portion (374) from the suppression frame (370), thereby reducing the number of work steps.

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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 Essential side view of transplanter with irrigation pump and check valves 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. Side view of essential parts showing a state in which the side support frame is attached A plan view of the main part showing a state in which the side support frame is attached Main part front view showing the supporting state of the water tank stay of another configuration example A side view of a main part showing a supporting state of a water tank stay in another configuration example. A plan view of a main part showing a supported state of a water tank stay in another configuration example. A perspective view of a main part showing a supported state of a water tank stay in another configuration example. Side view of an implanter with a drug delivery device supported by a compression device Side view of the main part showing the medicine supply device supported by the suppression device Exploded view of the drug delivery device supported by the suppression device (a) Main part side view showing vertical movement mechanism and delivery cable when planting device plants seedlings, (b) Main part side view showing vertical movement mechanism and delivery cable when planting device receives seedlings (a) Perspective view showing cable mounting arm, (b) Front view showing cable mounting arm Side view of an implanter with a drug delivery device supported on a handle frame Exploded view of drug delivery device supported by handle frame Exploded view showing delivery arm and delivery cable of medicine supply device (a) Exploded view showing nozzle stay and drug nozzle, (b) Main part front view showing drug nozzle supported by nozzle stay (a) Main part plan view of seedling supply device provided with cable stay, (b) Main part rear view of seedling supply device provided with cable stay (a) Top view of cable stay, (b) Side view of cable stay

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.

Note that the left and right running wheels 44 are mounted on the outer side of the running transmission case 38 .

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 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 fastening members such as bolts and nuts. 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, when the first engine switch 407 is in the ON position, the electric motor is energized and started.

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 field.
Makes it easier to turn.

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 deviation of the mounting 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-to-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, An intermediate inclined portion 113c is positioned between the lower footrest portion 113a and the upper footrest portion 113b and is twisted and inclined toward the outer side of the body. A plurality of anti-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 inter-row switching cover 114 includes a lower platform 114a located on the front side of the machine body and vertically downward, and an upper platform 114b located on the rear side of the machine body and vertically above the lower platform 114a. , 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 protrusion 172a that protrudes outward from the bent portion to the lower side of the fuselage, extends over the first protrusion 171a and the second protrusion 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 step on the lower footrest 113a and step on it, and to get off by the reverse operation, there is no need to raise the foot high when getting on or off, or to jump down to some extent. 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 edge. Even if the shape is disturbed by the wind and rain, the edge of the ridge 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.

This 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 based on 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 top 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 end of the vertical frame 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 positioned 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 both the linear portion 28 that moves linearly and 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 sitting on the work seat 46 or without getting off the floor step 122, on the front side of the seedling supply device 43,
A second engine switch 408 for switching whether to start the engine 41 and for stopping the engine 41 is provided on one of the left and right ends, that is, on the right hand side of the worker seated on the work seat 46. A second throttle lever 409 for increasing or decreasing the output of the engine 41 is provided at a position closer to the inside of the body (the other left and right sides of the body) than 408 so as to be rotatable in the left and right direction of the 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 are supplied to the left and right planting hoppers 20a and 20b while passing through the left and right drop supply positions 31a and 31b in series. The left and right planting hoppers 20a and 20b are completely supplied so that the seedlings can be supplied without leakage and the seedling container 22 to which the seedlings are not supplied after passing through the left and right dropping supply positions 31a and 31b is eliminated. 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 when viewed from above, 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 sides of the vehicle body, that is, on the left side of the vehicle body.

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 front-rear direction of the machine body.
By facilitating the removal of seedling containers from the mounting table 55 and the return of empty containers, 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.

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, taking into account conditions such as the soil quality of the field, the surrounding water environment, and the weather before the work.

As shown in FIGS. 1 to 5, 12, and 13, the transplanter of the present invention has a side support frame 60 which can be vertically rotated over the rollers 45 on the front side of the machine body and the running wheels 44 on the rear side of the machine body. The side support frame 60 includes the base of the seat support frame 46a that supports the work seat 46,
A water tank holder 601 for loading the water tank 600 is attached.

The side support frame 60 includes a front frame 61 arranged linearly between the front and rear wheels 45 and the running wheels 44, a rear frame 62 arranged linearly inside the traveling transmission case 38, and a traveling transmission. A connecting frame 63 passes through the lower side of the case 38 to connect the rear end of the front frame 61 and the front end of the rear frame 62, and mounts the base of the seat support frame 46a. The front side frame 61, the rear side frame 62, and the connection frame 63 are connected so as not to rotate with each other, and are configured to rotate up and down integrally as the side support frame 60. As shown in FIG.

Furthermore, a front connecting arm 64 for rotatably connecting the side support frame 60 to the wheel 45 is attached to the front end of the front frame 61 , that is, the side support frame 60 . The front connecting arm 64 is U-shaped in plan view, and is rotatably attached to the vicinity of the axle portion of the wheel 45 so as to sandwich the wheel 45 . In addition, on the front lower part of the front frame 61, a wheel scraper 65 is attached so that the front-rear position can be adjusted, passing below the front connecting arm 64 and facing the outer peripheral surface or the vicinity of the outer peripheral surface of the wheel 45. do.

The rear frame 62 is provided with a rear connecting arm 66 whose longitudinal direction is the longitudinal direction of the machine body and in which a long hole 66a into which the axle 12 of the rear wheel 44 is inserted is formed in the longitudinal direction of the machine body. The front and rear end portions of the rear connecting arm 66 form bending support portions 66b toward the inside of the fuselage. and By inserting the axle 12 into the long hole 66a of the rear side support arm 66, when changing the vertical height of the wheel 45 and changing the vehicle height of the traveling vehicle body 40 by vertically rotating the traveling transmission case 38, the side The vertical rotation of the part support frame 60 is not hindered.

It should be noted that the side of the axle 12 opposite to the side inserted into the running wheels 44, that is, the portion extending from the inside of the machine body, is assumed to enter the long hole 66a. In addition, the rear connecting arm 66 and the travel transmission case 38 are not brought into close contact with each other, and a space of several centimeters (eg, 3 to 8 cm) is arbitrarily adjusted.

Accordingly, by changing the lateral position of the side support frame 60 in addition to changing the lateral position of the wheel 45 by operating the lateral frame 16, the tread can be changed more finely according to the width of the ridge.

On the outer side of the connection frame 63 and on the upper part of the rear side of the front frame 61,
A support post 67 is arranged in a vertical posture into which the base side of the seat support frame 46a is inserted. The seat frame 46a straddles the traveling vehicle body 40, and the left and right base portions are inserted into the left and right support posts 67, 67. Only one of the left and right support posts 67 is provided to support the lower end side of the seat support frame 46a. It may be configured to be inserted into the post 67 .

The connecting frame 63 includes a front plate 63a whose outer side is positioned on the front frame 61 and is in contact with the front end of the rear frame 62, and a front plate 63a whose outer side is in contact with the rear end of the front frame 61 and is positioned on the rear frame 62. The rear plate 63b and the left and right plates 63c, 63c connecting the front plate 63a and the rear plate 63b form a frame shape with an open top and bottom. Note that the front side plate 63a and the rear side plate 63b are not rectangles but trapezoids so as to pass under the travel transmission case 38. As shown in FIG.

The water tank stay 601 described above includes a front and rear receiving plate 602 whose longitudinal direction is the longitudinal direction, and a plurality of (two in FIGS. 12 and 13) are provided between the front and rear of the front and rear receiving plate 602. The longitudinal direction is the left and right direction. and a frame-shaped water tank guard 604 mounted over the front and rear receiving plates 602 and the left and right receiving plates 603 .

In FIG. 13, since the configuration of the side support frame 60 becomes unclear when the water tank stay 601 is attached, the side support frame 60 is shown in a removed state.

More specifically, front and rear receiving bent portions 602a are formed on both front and rear receiving plates 602 toward the upper side of the fuselage, and left and right receiving bent portions 603a are formed on both front and rear receiving plates 603 toward the upper side of the fuselage. The water tank guard 604 is attached by welding or the like to or near the upper ends of the front and rear receiving bent portions 602a and the left and right receiving bent portions 603a. Note that the water tank guard 604 may be provided on the lower side of the airframe rather than near the upper end portion, or may be provided in plural at intervals in the vertical direction.

On the lower side of the front and rear receiving plate 602, a pair of front and rear connecting stays 605, 605, which are L-shaped in a side view and are connected to the front and rear bending instruction portions 66b, 66b of the rear connecting arm 66, are provided. The front and rear bending instruction portions 66b, 66b and the connecting stays 605, 605 may be connected by fastening members such as bolts and nuts. It is desirable to use a larger diameter than the standard one used for fastening members together.

With the above configuration, when the travel transmission case 38 is rotated vertically and the vertical position of the roller 45 is adjusted by the vertical frame 17, the side support frame 60 can be rotated vertically in conjunction with the side support frame 60. The amount of forward and backward movement of the can be suppressed. Therefore, fluctuations in weight balance due to fluctuations in the front and rear positions of the work seat 46 and the water tank 600 are suppressed, and disturbance in the traveling direction of the traveling vehicle body 40 and disturbance in the planting posture of the planting hoppers 20a and 20b are prevented.

In addition, since the side support frame 60 rotates in conjunction with the vertical rotation of the travel transmission case 38, there is no need to separately rotate the side support frame 60 up and down, and the vehicle height can be adjusted efficiently. It can be carried out.

In addition, since the front connecting arm 64 is mounted so as to sandwich the wheel 45 from the left and right, the wheel 45 is supported from the left and right, so that the structure is strong against the load received from the work seat 46, and damage occurs. become difficult.

In addition, since the front frame 61 and the support post 67 are arranged in a straight line between the front and rear wheels 45 and the running wheels 44, these members are positioned on the ridge grooves, thereby preventing the ridges from collapsing due to contact. and the growth of planted seedlings is less likely to be adversely affected.

Further, by inserting the axle 12 of the running wheel 44 into the long hole 66a formed in the rear connecting arm 66, the axle 12 designed with high strength to receive the load of the running vehicle body 40 and ground resistance is used. Since the water tank stay 601 and the side support frame 60 are prevented from being damaged.

In addition, since the wheel scraper 65 is attached to the front frame 60, the soil adhering to the wheel 45 can be scraped off. Therefore, the planting attitude of the seedlings is prevented from being disturbed due to the change in the forward/backward inclination angle of the traveling vehicle body 40. - 特許庁

In addition, since the front and rear positions of the wheel scraper 65 can be adjusted, excessive contact with the wheel 45 will cause running resistance, and soil adhering to the wheel 45 cannot be sufficiently removed. disappearance is prevented.

The capacity of the water tank 600 to be loaded with the above configuration is about 10 liters in consideration of the strength, that is, it is desirable that the weight of the water tank 600 itself is several hundred grams of 10 kg of water. However, in a field with a large planting work area, it is desirable that the frequency of replacement of the water tank 600 is low in order to prevent a decrease in work efficiency. One example is a plastic tank with a capacity of 20 liters used for transporting and storing kerosene.

When increasing the capacity of the water tank, in addition to the load, the width of the water tank in the front and back and the width in the left and right become a problem. In order to load a large-capacity water tank according to the configuration of the transplanter of the present application, the space above the traveling transmission case 38 has no problem with the front-rear width, but the left-right width cannot be secured. It is desirable to use the open space outside the fuselage of the running wheels 44 because there is a risk of contact.

In order to support the large-capacity tank 610 outside the body of the running wheels 44, as shown in FIGS. The inner stay 611 has an upper portion that protrudes significantly above the upper surface of the travel transmission case 38 and a lower portion that protrudes below the lower surface of the travel transmission case 38 . An outer stay 612 corresponding to the inner stay 611 is mounted on the front side and outside of the travel transmission case 38. The lower portion of the outer stay 612 protrudes downward from the travel transmission case 38, and the upper portion has a prism shape. is formed above the upper surface of the traveling transmission case 38.

A hollow columnar member, for example, an outer tube 613 having a hexagonal columnar shape is attached to the receiving portion formed in the outer stay 612 so as to face in the lateral direction of the aircraft body. The hexagonal columnar outer tube 613 is firmly fixed to the outer stay 612 by welding or the like so as to receive the load of the large-capacity tank 610 .

In addition, the outer stay 612 has a bent portion 612a toward the outer side of the fuselage, and the upper end of the bent portion 612a is brought into contact with the rear side of the outer tube 613 and welded to further improve the strength. . In addition, the outer tube 613 is provided with a receiving nut for inserting a fastening member such as a bolt on the outer peripheral surface, and the fastening member is screwed toward a screw groove (not shown) formed in the inner stay 611, and the inner stay 611 and the outer stay are connected. By inserting a fastening member into a mounting hole formed on the lower side of 612 and fastening, the mounting strength is increased. Further, mounting holes are also formed in part of the surfaces of the inner stay 611 and the outer stay 612 that come into contact with the travel transmission case 38, and a nut or the like is attached to the screw shaft exposed from the inside of the travel transmission case 38. The structure shall ensure load bearing capacity.

Then, the right and left base sides of a tank guard 615 that surrounds and supports the large-capacity tank 610 are connected to a columnar member having a shape corresponding to the outer tube 613, such as a hexagonal columnar inner tube 614, respectively. A hole into which the inner tube 614 is inserted is formed in the base side of the tank guard 615. After the inner tube 614 is inserted, it is desirable to fix it by welding or the like in order to improve strength. In addition, portions of the tank guard 615 located on the left and right sides of the large-capacity tank 610 form an upwardly inclined portion 615a that slopes upward from the base side toward the vicinity of the center position in the front-rear direction, and also extends rearward from the vicinity of the center position in the front-rear direction. is substantially parallel to the contact surface of the running wheel 44, and has an inverted V shape when viewed from the side.

Between the rear side of the tank guard 615 and the front and rear of the inner tube 614, front and rear support plates 616 whose longitudinal direction is the longitudinal direction of the fuselage are connected, respectively. A front support bent portion 616a that bends upward is formed on the front side of the front/rear support plate 616, and a rear support bent portion 616b that bends upward is formed on the rear side. The rear support bent portion 616b protrudes higher than the front support bent portion 616a, and the upper inclined portion 615a is positioned lower toward the front of the fuselage. Further, a reinforcing bent portion 616c that bends toward the front side of the fuselage is formed on the lower side of the front support bent portion 616a, specifically, on the lower side than the inner tube 614, and the upper surface of this reinforcing bent portion 616c is formed on the inner tube. It is configured to be connected to the lower surface of 614 . Of the front and rear portions of the front and rear support plate 616, the outer side of the body is bent downward to further improve the strength.

Furthermore, the front side support bent portion 616a is bent toward the front side of the fuselage near the upper end, that is, above the position where it is connected to the inner tube 614, and the rear side support bent portion 616b is bent near the upper end, that is, the tank guard 615. It is bent toward the rear side of the fuselage above the position where it is connected to the rear of the fuselage, making it easier to put in and take out a large-capacity tank.

On the front and rear support plates 616, one or a plurality of left and right support plates 617 for supporting both left and right sides of the large-capacity tank 610 are arranged at intervals. When one left/right support plate 617 is provided, the front/rear support plate 616 in the front/rear direction is arranged at or near the front/rear intermediate position. Left and right supporting bent portions 617a, 617a that bend upward are formed on both left and right sides of the left and right support plate 617, respectively.

The positions of the upper end portions of the left and right support bending portions 617a, 617a are the same or substantially the same on the left and right, but the support bending portion 617a positioned outside the fuselage is connected within the frame of the tank guard 615 and is located inside the fuselage. The supporting bent portion 617a located is configured to be connected outside the tank guard 615 frame.

As a result, a large-capacity tank stay 618 that supports the large-capacity tank 610 so that it can be pulled in and out is formed.

This large-capacity tank stay 618 can be removed by completely pulling out the inner tube 614 from the outer tube 613 . As a result, when the large-capacity tank 610 is not loaded, the large-capacity tank stay 618 can be removed to make the left and right widths of the machine body compact. Easy to secure space.

On the other hand, when the large-capacity tank 610 is placed and the seedlings are planted, it is necessary to prevent the large-capacity tank stay 618 from coming off. may occur, and the traveling direction of the traveling vehicle body 40 and the planting posture of seedlings may be greatly disturbed.

In order to restrict the lateral movement of the inner tube 614 during work and to make it possible to easily attach and detach the large-capacity tank stay 618 when not working, the outer tube 613 and the inner tube 614 are spaced in the left-right direction. An adjustment hole is formed, and with the adjustment holes of the outer tube 613 and the inner tube 614 aligned with each other, a mounting member such as a bolt or nut can be attached or detached to switch between an attached state and a detached state.

In the above configuration, when the large-capacity tank stay 618 is removed, it is necessary to store the mounting member so as not to lose it. If the mounting member is attached to the adjustment hole formed in the outer tube 613 or the inner tube 614, it can be used immediately when the large-capacity tank stay 618 is mounted next time. work is required. In addition, when the transplanter is brought back from the field, it is necessary to remove the mounting member. It takes extra time and the trouble of bringing the tools into the field.

In order to deal with this problem, it is conceivable to attach the base of the rotating arm portion of the pipe pin to the outer tube 613 and provide a mounting pin at the end of the rotating arm portion. As a result, even if the mounting pin is pulled out, since the rotating arm portion is provided on the outer tube 613, it is possible to prevent the mounting pin from being lost.

The irrigation water 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 planting hoppers 20a and 20b reach the position where the seedlings are planted. Ejected. 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 water supplied to the field per time is reduced, and there is a risk that the growth of seedlings will be delayed due to lack of water, 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 sprinkling 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 converging 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, water is poured into the planting hoppers 20a and 20b 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 described above draws a predetermined trajectory in conjunction with the elevation of the planting hoppers 20a and 20b, the number of parts of the mechanism for moving up and down along the predetermined trajectory can be reduced. 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 to 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 watering 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 seedlings planted by the planting hoppers 20a and 20b are supplied with water by the watering operation described above, as well as fertilizers necessary for the growth of the seedlings and chemicals to protect them from pests. The supply of such fertilizers and chemicals is performed by a chemical supply device 500 mounted on the aircraft.

The conventional chemical supply device is provided in front of the seedling supply device 43, etc., but the vertical interval from the mounting position to the seedling planting position is large, and the supply hose for moving the chemical is long, resulting in vibration of the machine body. If the supply hose shakes due to wind or other factors, the falling speed of the chemical will fluctuate, and the set amount of chemical will not be supplied to the vicinity of the seedling planting position. The drug may be delivered to a location remote from the planting site of the

In addition, the supply hose may be arranged with a large bend in order to prevent it from interfering with the planting trajectory of the planting hopper. may not be supplied to

In order to solve the above problem, as shown in FIGS. A U-shaped mounting bracket 501 is arranged on either the left or right side of the left and right avoidance upper and lower parts 372b toward the avoidance top part 372a on the rear side of the fuselage relative to the mounting position.

The mounting bracket 501 is formed by connecting two U-shaped plate bodies with a space between them with a square plate body, or by bending an O-shaped plate body. It is shaped to have a space in the direction and a space in the front-to-rear direction into which the pressing arm 370 is inserted.

The fixing members 502 are inserted into the two mounting brackets 501 from the front side of the machine body, and the ends of the fixing members 502 are screwed into the screw holes formed in the drug support frame 503. fixed to The drug support frame 503 is formed by bending a plate into an L shape when viewed from the side.

Of the medicine support frame 503, the portion of the avoidance upper and lower portion 372b positioned on the rear side of the machine body protrudes below the machine body more than the other parts in order to form the insertion position of the fixing member 502. As shown in FIG. As a result, the drug support frame 503 has an L-shape when viewed from the back, which is different from when viewed from the side. On the other hand, in order to prevent interference with the planted seedlings passing below the avoidance portion 372, the lower end position of the other chemical support frame 503 is set at substantially the same height as the avoidance top portion 372a, or at the avoidance heights on the left and right sides of the avoidance top portion 372a. The height is such that it slightly protrudes toward the upper and lower portions 372b.

In addition, a first connecting plate 504 having a triangular shape in a side view is provided at one left and right end portion of the drug support frame 503, in this case, on the avoidance upper and lower portion 372b side where the mounting bracket 501 is provided. A second connection plate 505 having an L-shape in side view is fixed by welding or the like to the side of 504 and above the avoidance top portion 372a. The first connecting plate 504 and the second connecting plate 505 protrude from the medicine support frame 503 toward the front side of the machine body by the same length, and mounting nuts (not shown) are attached to these protruding portions.

Then, a U-shaped base plate 506 is detachably attached to the top of the first connecting plate 504 and the second connecting plate 505 with a fixing member (not shown) such as a bolt. A feeding device 507 for discharging a set amount of medicine and a drug hopper 508 for storing the medicine discharged by the feeding device 507 are integrally arranged on a base plate 506 .

The drug hopper 508 is provided with a cover for charging the drug that can be opened and closed, and is configured to be detachable during maintenance work of the dispensing device 507 or the like. In order to facilitate maintenance of the inside of the feeding device 507, it is preferable that the external parts are divided by a simple operation and detachable. As a configuration for simplifying attachment and detachment, a receiving hook is formed on an exterior part of the drug hopper 508 or the delivery device 507, and a clasp caught on the receiving hook is moved back and forth to switch between the locked state and the unlocked state. It is conceivable to use a device such as a patch lock.

An upper end portion of a supply hose 509 through which the discharged medicine flows down and is guided is detachably connected to the lower portion of the delivery device 507, and the lower end portion of the supply hose 509 is larger than the diameter of the supply hose 509. It can be connected to a drug nozzle 510 with a diameter. The chemical nozzle 510 is located behind the mounting portion of the soil crushing ring 371 on one of the left and right sides of the crushing arm 370, specifically, on the portion that protrudes forward from the lower end of the avoidance upper and lower portion 372b on one of the left and right sides of the crushing arm 370. , through the mounting bracket 501 and the fixing member 502 .

The drug nozzle 510 is provided with a mounting screw shaft 510a that protrudes to one side of the body left and right. shall be This allows the drug nozzle 510 to be attached to the suppression arm 370 .

With the above configuration, the chemical supply device 500 can be attached to the suppression arm 370 close to the field, so the chemical discharged from the chemical hopper 508 is supplied from the chemical nozzle 510 to the vicinity of the planting position of the seedling. As a result, the planted seedlings can easily absorb the chemicals or be easily protected by the ingredients of the chemicals, and stable growth can be expected.

In particular, since it is possible to prevent seedlings from withering during growth due to pests, it is possible to prevent a decrease in yield.

In addition, since the distance between the chemical supply device 500 and the agricultural field is shortened, the vertical length of the supply hose 509 can be shortened. supply becomes possible.

In addition, the medicine supply device 500 is detachably provided on the rear side upper part of the fuselage of the suppression arm 370 which does not block the upper part, the outer side of the fuselage, and the rear part of the fuselage at the rear part of the fuselage. Efficient attachment and detachment work.

In addition, since the medicine nozzle 510 is attached to the suppression arm 370 below the medicine supply device 500, even if the supply hose 509 shakes due to the vibration of the machine body, wind, etc., the medicine supply position does not easily change. , the growth of seedlings can be stabilized.

In addition, when the medicine nozzle 510 and the supply hose 509 are disconnected, the inside of the medicine nozzle 510 and the supply hose 509 can be checked, so it is easy to confirm the position where clogging occurs and to deal with it, and the interruption time of work due to clogging can be reduced. be done.

Further, by making the supply hose 509 smaller in diameter than the drug nozzle 510, the supply hose 509 can be inserted into the drug nozzle 510 and attached easily.

The chemical supply device 500 is provided for each crushing arm 370, and one chemical supply device 500 supplies a chemical agent to one row of planted seedlings.

When the chemical supply device 500 is attached, a load of several kg continues to be applied to the crushing arm 370 from above, and as it is, even if there is unevenness (especially convexity) in the field, it will not be able to rotate upward accordingly. . If the machine moves forward in this state, the left and right soil covering pressure wheels 371, 371 may push the soil that is the convex part of the field, and the planted seedlings may be knocked over.

In addition, in a model equipped with a rolling mechanism that corrects the lateral tilt of the machine based on the amount of rotation of the left and right suppression arms 370, 370, if the amount of rotation of the suppression arm 370 differs from the unevenness of the field, the rolling mechanism will becomes inclined in the horizontal direction with respect to the field surface, and the seedling may be planted in the inclined position in the horizontal direction.

A configuration will be described in which even when the medicine supply device 500 is attached, vertical rotation of the suppression arm 370 is not hindered. As shown in FIGS. 18 to 20, a mounting stay 511 is mounted on the front side of an L-shaped connecting stay 402a for mounting the rear end of the reinforcing frame 152 on the handle frame 402. As shown in FIGS. The mounting stay 511 has a connecting protrusion 511a formed in the left-right central portion thereof to connect with the connecting stay 402a, and the reinforcing frame 152 passes over this when mounted. In addition, space portions are formed on the left and right sides of the connecting protrusion 511a, respectively, and on both the left and right sides of these space portions, support protrusions protruding upward and bending toward the rear side of the fuselage at a position above the connecting protrusion 511a. 511b are formed respectively.

A space between the connecting protrusion 511a and the left and right supporting protrusions 511b is formed to allow the levers provided on the control panel 47a and the cables connected to the levers to pass therethrough. As a result, the levers and cables can be arranged as straight as possible, and variations in the cables can be prevented.

Then, the hanging support frame 512 is attached to the upper part of the mounting stay 511 and the connecting stay 402a by fixing members such as bolts. The hanging support frame 512 has a trapezoidal shape in a plan view, and is attached with the short side facing the rear side of the fuselage. Outer connecting holes 513, 513 for attaching fixing members to be connected to the left and right supporting protrusions 511b are formed on the short sides, and between the left and right outer connecting holes 513, 513, the connecting stay 402a is formed. An inner connecting hole 514 that connects a pair of left and right mounting holes formed in the upper portion with a fixing member, and a notch 515 in the front-rear direction that avoids the other mounting hole are formed.

In addition, the front side of the suspension support frame 512 is bent upward to improve strength, and suspension attachment holes 516 are formed at predetermined intervals in the left-right direction of the body on the rear side of the body from the upwardly bent portion. do. Although the hanging mounting holes 516 are formed on both left and right sides of the hanging support frame 512, they are not formed in the left and right center portions where the left and right outer connecting holes 513, 513 and the inner connecting hole 514 are formed. Since members such as the handle frame 402 are arranged below the hanging support frame 512, even if the hanging mounting holes 516 are formed at this position, they are not used, and the strength of the hanging support frame 512 is lowered. The part strength is maintained by not forming.

In the above description, the suspension attachment holes 516 are circular holes formed at predetermined intervals, but the suspension attachment holes 516 on the left and right sides of the machine body may be formed as elongated holes whose longitudinal direction is the left-right direction. .

At an arbitrary position of the hanging mounting holes 516 . . . , an upper end portion of a crushing load spring 517 is mounted, which receives the load from the medicine supply device 500 attached to the crushing arm 370 and optimizes the crushing load. If the hooking portion of the crushing load spring 517 is a J-shaped hook, the arc portion is placed in contact with the upper bent portion on the front side of the hanging support frame 512,
Contact resistance may be used as a detent.

The positions of the hanging mounting holes 516 to be selected must be selected according to the spacing between the rows of the planting hoppers 20a and 20b, that is, the left-right spacing. The lateral width to be set corresponds to the selectable range between the planting rows of seedlings.

Further, in order to mount the lower end portion of the suppression load spring 517, a square hooking notch portion 518 is formed on the opposite side of the drug support frame 503 to the side where the base plate 506 is provided, in this case, on the other left and right sides. If the hook portion of the crushing load spring 517 is a J-shaped hook, it is passed under the drug support frame 503 from the inside of the hook notch 518 , and the end of the hook is positioned near the front end of the drug support frame 503 . It is desirable to install

Note that the hooking notch 518 is formed long in the left-right direction, and the upper end of the suppression load spring 517 is installed at an angle in which the horizontal inclination is small regardless of which suspension mounting hole 516 is installed. The load spring 517 can be used to sufficiently pull up the drug support frame 503, and the suppression arm 370 can be rotated appropriately according to the unevenness of the field.

Also, this hook notch portion 518 is utilized as a space portion into which the upper side of the mounting bracket 501 provided on the avoidance top portion 372a is inserted.

A avoidance top portion 372a of the crushing arm 370 is provided with a weight support shaft 374a on which one or a plurality of crushing weights 374 for adjusting the crushing load are vertically mounted. In order to avoid the weight support shaft 374a, a support shaft avoidance hole 374b is formed on the upper surface of the drug support frame 503 and on the side of the hook cutout 518. As shown in FIG.

As a result, even if the crushing load is insufficient when the chemical supply device 500 is installed, the crushing weight 374 can be attached to ensure an appropriate crushing load, so that the soil around the planted seedlings can be properly treated. It is possible to prevent the seedlings from falling down and the roots of the seedlings from being exposed to the outside air and causing poor growth.

If the urging force of the crushing load spring 517 is too strong, the soil covering crushing wheels 371, 371 will be in a state of floating from the field surface, and the crushing performance will deteriorate. is desirable. However, when the medicine is put into the medicine hopper 508, the weight increases, and it decreases during operation.

With the above configuration, the crushing frame 370 can be rotated appropriately with respect to the unevenness of the field, so that the soil around the planted seedlings can be leveled and hardened appropriately, and the planting posture of the seedlings can be stabilized.

In addition, when the left and right crushing arms 370, 370 are moved in accordance with the row spacing adjustment of the left and right planting hoppers 20a, 20b, only the suspension attachment hole 516 for mounting the upper end portion side of the crushing load spring 517 is changed. , so the row spacing can be easily adjusted.

With the horizontal width of the suspension support frame 512, a sufficient number or range of suspension mounting holes 516 are provided for the range of adjustment between the left and right planting hoppers 20a, 20b and the left and right crushing arms 370, 370. may not be formed.

In order to allow the crushing load spring 517 to correspond to the left and right row spacing adjustment range, the L-shaped extension plate 519 in side view is formed with round holes at predetermined intervals in the left and right direction, or holes are formed at predetermined intervals in the left and right direction. Extending mounting holes 520 are formed as elongated holes formed by pressing.

Then, the extension plate 519 is arranged along the upper or lower side of the suspension support frame 512, and the suppression load spring 517 is attached to the extension mounting hole 520 at an arbitrary position, and the suppression load spring 517 is attached. The extension plate 519 is attached to the suspension support frame 512 by aligning the extension attachment hole 520 and the suspension attachment hole 516 at an arbitrary position and providing a fixing member.

As a result, the compressing load spring 517 can be mounted substantially linearly according to the row-to-row adjustment range. can be appropriately moved up and down according to the unevenness of the field.

Therefore, the planting attitude and planting depth of the seedlings are stabilized, the growth of the seedlings is stabilized, and the yield and quality of harvested crops are prevented from being lowered.

The medicine supply device 500 is arranged on the rear side of the body of the planting hoppers 20a and 20b and on the front side of the body of the steering handle 404 in a side view.

As a result, the planting hoppers 20a and 20b do not interfere with the ascending and descending trajectories, and the operator's feet are less likely to come into contact with the chemical supply device 500 when the operator carries the steering handle 404 and operates the machine during movement. and work efficiency is improved.

The driving force of the delivery device 507 of the drug supply device 500 can be simplified by providing an electric motor or the like. However, the chemical must be supplied only to the vicinity of the planting position of the seedlings, and the electric motors must be intermittently driven in accordance with the timing at which the planting hoppers 20a and 20b plant the seedlings. This alone requires an electric motor control unit,
The timing at which the seedlings are planted by the planting hoppers 20a and 20b varies depending on the distance before and after the planting position of the seedlings, that is, the setting between the plants and the vehicle speed setting of the traveling vehicle body 40. Therefore, a control unit that supports more complicated control is required. , problems such as a decrease in maintainability due to the complication of the control system and an increase in cost due to an increase in the number of parts occur.

A configuration that matches the timing of planting without the above-mentioned complicated design will be described. As shown in FIGS. 21(a)(b) and 22(a)(b), the upper link arm 21a constituting the vertical movement mechanism 21 is mounted so as to be vertically rotatable in conjunction with the upward/downward and forward/backward movement of the upper link arm 21a. One end of a pay-out cable 522 for moving a pay-out roll (not shown) housed in the pay-out device 507 by a predetermined amount is connected to the lower link arm 21b. The lower link arm 21b is provided with a cable attachment arm 523 having approximately the same longitudinal length as the lower link arm 21b, and a wire receiving pin 524 projecting outward from the vehicle body is attached to the cable attachment arm 523. As shown in FIG. One end of the delivery cable 522 is attached to the wire receiving pin 524 .

One end of the feeding cable 522 is formed with a vertical feeding slot 522a. When the amount of downward rotation of the lower link arm 21b exceeds a certain angle, the feeding cable 522 begins to be pulled and the seedlings are planted. The medicine is ejected from the medicine nozzle 510 immediately before or after the planting is performed or the planting is performed.

The cable attachment arm 523 has a front attachment hole 523a near the front end and a rear attachment hole 523b near the rear end. It is formed to have a larger diameter than the other. Extension pins 525 are attached to the fulcrum shafts on the base side and end side of the lower link arm 21b, respectively, and these extension pins 525 are inserted into the front side mounting holes 523a and the rear side mounting holes 523b, respectively. The diameter of the extension pin 525 is the same as the smaller diameter side of the front mounting hole 523a and the rear mounting hole 523b, and the larger diameter side has some play.

If the fulcrum shafts are screw shafts and the side of the extension pin 525 attached to the fulcrum shaft is, for example, a hexagonal nut, the attachment/detachment work can be easily performed.

As a result, even if there is a slight difference in the position adjustment of the vertical motion mechanism 21 due to maintenance or the like, or if the load due to the operation of the feeding device 507 increases, the cable mounting arm 523 can be rotated to release the load. Therefore, mechanical lock is less likely to occur, and disruption of drug supply timing can be prevented.

A cable stay 522a is provided on the lower side of the table frame 43a constituting the seedling supply device 43, the cable outer of the delivery cable 522 is attached to the cable stay 522a, and the body of the delivery device 507 is fed through the cable stay 522a. It is connected to a delivery arm 526 provided on the rear side.

In addition, the vertical movement mechanism 21 is provided between the upper side of the body of the rear side link support plate 21c that supports the rear side of the upper link arm 21a and the lower side link arm 21b and the lower side of the table frame 43a. A lifting auxiliary spring 527 is provided to apply an upward biasing force to reduce the load during lifting and apply a brake during descent.

The delivery arm 526 is connected to the rear end of a rotating shaft 528 provided on the delivery roll housed in the delivery device 507 , and the other end of the delivery cable 522 is connected to the upper part of the delivery arm 526 .

As a result, when the lower link arm 21b descends to a predetermined angle, the feed cable 522 begins to be pulled, and the planting hopper 20a (20b) enters the soil to plant seedlings, or just before or after planting. 526 rotates to rotate the feeding roll of the feeding device 507 , causing the drug that has flowed down from the drug hopper 508 to flow down to the supply hose 509 , and the drug near the planted seedlings through the drug nozzle 510 . can be supplied.

In the above-described configuration, the feeding device 507 is fed out through the vertical movement mechanism 21 that moves up and down for planting in conjunction with the setting between plants and the running speed, so the chemical can be supplied in time with the planting timing of the seedlings. can be done. Therefore, it is possible to prevent the drug from being supplied to a position far away from the planting position of the seedlings, and to allow the effects of the drug to sufficiently act on the seedlings.

The chemical supply device 500 described above can shorten the distance from the field, and it is easy to prevent the chemical supply position from being displaced and the chemical supply timing from being disturbed. additional configuration is required.

A configuration example that enables stable chemical supply even though the distance to the field is slightly longer will be described below.

As shown in FIGS. 23 and 24 , a U-shaped mounting stay 551 is attached to the connecting stay 402 a of the handle frame 402 , and the mounting stay 551 is attached to the base of the drug support frame 553 . The mounting stay 551 has a connecting protrusion 551a formed in the left-right central portion thereof to connect with the connecting stay 402a, and the reinforcing frame 152 passes over the connecting stay 402a when mounted. In addition, space portions are formed on the left and right sides of the connection protrusion 551a, respectively, and support protrusion portions 551b that bend toward the front side of the body are formed on both the left and right outer sides of these space portions.

A space between the connecting protrusion 551a and the left and right supporting protrusions 551b is formed to allow the levers provided on the control panel 47a and the cables connected to the levers to pass therethrough. As a result, the levers and cables can be arranged as straight as possible, and variations in the cables can be prevented.

Mounting holes are formed in the left and right support protrusions 551b, respectively, and these mounting holes are aligned with the mounting holes formed in the mounting portion of the drug support frame 553, and are connected by fixing members such as bolts and nuts. . The medicine support frame 553 has left and right mounting arms 555, 555 having mounting holes for the support protrusions 551b, which are arranged at intervals in the left and right direction on a support shaft 554 whose longitudinal direction is the left and right direction of the machine body, and L-shaped support plates 556, 556 are mounted on the left and right sides of the support shaft 554 when viewed from the side.

The left and right mounting arms 555, 555 are L-shaped in plan view, and are configured to be in front contact with the outer surface of the support protrusion 551b, thereby improving the mounting strength. A plurality of mounting holes for fixing members are formed in the left-right direction on the upper surfaces of the left and right support plates 556 , 556 .

The left and right planting hoppers 20a and 20b and the crushing arms 370 and 370 of the transplanter are mounted so that the left and right spacing between seedlings, the so-called row spacing, can be changed. If one chemical supply device 500 supplies chemicals to one planted row, the chemical supply device 500 also needs to be mounted so as to be movable in the left-right direction according to the range of row spacing adjustment.

The left and right support plates 556, 556 are each provided with an adjustment plate 557 which is L-shaped when viewed from the side and has a mounting elongated hole 557a extending in the left-right direction on the upper surface side. By passing a fixing member from the upper side of the machine body through the mounting hole of the support plate 556 and the long mounting hole 557a, the left and right positions of the medicine supply device 500 are changed.

Left and right mounting rods 558, 558 are provided on the rear surface of the adjustment plate 557 and protrude rearward of the machine body, and the mounting holes of the base plate 559 are inserted into the left and right mounting rods 558, 558 for mounting. A delivery device 507 for delivering the drug and a drug hopper 508 for storing the drug are provided on the upper part of the base plate 559, and a supply hose 509 for guiding the drug down and the lower end of the supply hose 509 are provided on the lower part of the base plate 559. A drug nozzle 510 is provided to supply the drug near the seedling.

The delivery device 507 is equipped with a delivery drive arm 560 that rotates an internal delivery roll (not shown) by a predetermined amount to deliver the drug. The extension drive arm 560 is arranged in a tilted attitude toward the upper front side of the fuselage.

The delivery drive arm 560 rotates to rotate the delivery roll at the timing when the planting hopper 20a (20b) plants the seedlings in the field, or at the timing immediately before or after that, supplying the medicine to the vicinity of the planted seedlings. It is desirable to have a configuration that In order to realize this, if the delivery drive arm 560 is configured to rotate in conjunction with the vertical rotation of the lower link arm 21b that constitutes the vertical movement mechanism 21, the seedlings planted by the planting hoppers 20a and 20b will move forward and backward. It is possible to set the interval, the so-called interval between plants, or the supply interval of the medicine corresponding to the traveling speed of the traveling vehicle body 40 .

As shown in FIGS. 21(a)(b) and 22(a)(b), the lower link arm 21b is provided with a cable attachment arm 523 having approximately the same longitudinal length as the lower link arm 21b, A wire receiving pin 524 is attached to the cable mounting arm 523 so as to protrude toward the outside of the machine body. One end of the delivery cable 522 is attached to the wire receiving pin 524 .

One end of the feeding cable 522 is formed with a vertical feeding slot 522a. When the amount of downward rotation of the lower link arm 21b exceeds a certain angle, the feeding cable 522 begins to be pulled and the seedlings are planted. The medicine is ejected from the medicine nozzle 510 immediately before or after the planting is performed or the planting is performed.

The cable attachment arm 523 has a front attachment hole 523a near the front end and a rear attachment hole 523b near the rear end. It is formed to have a larger diameter than the other. Extension pins 525 are attached to the fulcrum shafts on the base side and end side of the lower link arm 21b, respectively, and these extension pins 525 are inserted into the front side mounting holes 523a and the rear side mounting holes 523b, respectively. The diameter of the extension pin 525 is the same as the smaller diameter side of the front mounting hole 523a and the rear mounting hole 523b, and the larger diameter side has some play.

If the fulcrum shafts are screw shafts and the side of the extension pin 525 attached to the fulcrum shaft is, for example, a hexagonal nut, the attachment/detachment work can be easily performed.

As a result, even if there is a slight difference in the position adjustment of the vertical motion mechanism 21 due to maintenance or the like, or if the load due to the operation of the feeding device 507 increases, the cable mounting arm 523 can be rotated to release the load. Therefore, mechanical lock is less likely to occur, and disruption of drug supply timing can be prevented.

As shown in FIGS. 25 to 28, the feed cable 522 has a cable outer attached to a cable support stay 561 provided below the adjustment plate 557, and is connected to the feed drive arm 560 via the cable support stay 561. be. However, if it is directly connected to the feeding drive arm 560, the pulling stroke of the feeding cable 522 other than the specific plant spacing and running speed cannot be accommodated.

The delivery drive arm 560 is attached to one end of a delivery connection arm 562 having a V-shaped profile in a side view, and a spring receiving washer 563 is provided at the other end of the delivery connection arm 562 . A receiving pin 563a is provided on one of the left and right sides of the spring receiving washer 563. The upper end of the stroke adjusting spring 564 is hooked on the receiving pin 563a, and the lower end of the stroke adjusting spring 564 is hooked on the delivery cable 522. Configuration.

The delivery cable 522 arranged from the lower link arm 21b toward the rear side of the machine body needs to be arranged at a position that does not interfere with the operation of the vertical movement mechanism 21 and the planting hoppers 20a and 20b.

As shown in FIGS. 27 and 28, a cable relay stay 565 is provided on the table frame 43a of the seedling supply device 43. As shown in FIGS. The cable relay stay 565 has a cable outer receiving groove 565b formed at one end of a relay plate 565a which is J-shaped in plan view, and a front mounting arm 565c and a rear mounting arm 565d at the other end with a front-to-rear spacing. Arrange and configure in an empty space. The front side mounting arm 565c rises upward at the connecting portion with the relay plate 565a, and has a shape that extends upward from the rising top inside the fuselage. Also, the shape is such that the inner end of the fuselage rises upward.

A cable outer provided in the middle of the delivery cable 522 is connected to the cable outer receiving groove 565b of the relay plate 565a. It is constructed such that it is bent and mounted on the cable support stay 561 .

As a result, it is possible to prevent the feeding cable 522 from loosening in the middle and interfering with the vertical movement mechanism 21 and the planting elevation trajectory of the planting hoppers 20a and 20b. can stabilize the growth of seedlings.

In the above configuration, the chemical supply device 500 is positioned between the planting hoppers 20a, 20b and the steering handle 404, so that the chemical nozzle 510 can be positioned near the seedlings to be planted without bending the supply hose 509. , the movement of the chemical in the supply hose 509 is stagnant and the amount of the chemical supplied is insufficient, and the chemical is prevented from being supplied to a position away from the seedling.

In addition, since the medicine supply device 500 can be arranged at a high position of the machine body, specifically, at an upper position of the handle frame 404, it is easy to perform attachment/detachment work, adjustment work of left and right positions, and work of charging medicine while standing, which improves work efficiency. It is possible to improve the efficiency and reduce the labor of the operator.

In the above configuration, the medicine nozzle 510 is not fixed, and the supply hose 509 is not fixed either. be.

In order to prevent this, a mounting hole for a fixing member is formed between the upper and lower portions of the cable support stay 561, and the nozzle stay 567 is mounted through the fixing member in alignment with this mounting hole. The nozzle stay 567 includes a V-shaped stay rod 567a in which the lower side of the fuselage is bent toward the inside of the fuselage when viewed from the front, a mounting plate 567b having a mounting hole formed at the upper end of the stay rod 567a, A nozzle mounting plate 567c is provided at the lower end of the stay rod 567a.

The nozzle mounting plate 567c has a double nut system in which nuts are provided on both the inside and the outside of the machine body, and when the mounting screw shaft 510a protruding from the outer periphery of the drug nozzle 510 is inserted, the front-rear tilt angle can be adjusted.

As a result, since the supply hose 509 is supported by the delivery device 507 and the chemical nozzle 510, it is possible to prevent the chemical supply position from being shifted even if the machine body shakes due to the vibration or wind, etc., and the chemical can be reliably applied to the seedlings. can be made

In addition, since the supply hose 509 can be prevented from being twisted, the chemical can be sent to the chemical nozzle 510 as set, and adverse effects on growth due to shortage of the chemical can be prevented.

In addition, since the front-rear inclination angle of the chemical nozzle 510 can be changed, the supply position of the chemical can be adjusted according to the planting position of the seedlings, so that the effect of the chemical can be reliably exerted. Furthermore, when using a chemical that causes phytotoxicity if it comes into direct contact with the seedlings, contact of the chemical with the seedlings is prevented.

INDUSTRIAL APPLICABILITY The transplanter according to the present invention can be applied to a planting operation or the like in which the soil around planted seedlings is leveled appropriately while supplying a chemical to an appropriate position, and has high industrial applicability.

20a planting hopper (planting device)
20b planting hopper (planting device)
37 Soil-covering ring (compacting device)
40 traveling vehicle body 370 suppression frame 371 suppression rotating body (suppression wheel)
372a Avoid top (upper projection)
374 suppression weight (weight)
374a Weight support shaft (mounting part)
374b Support shaft avoidance hole (mounting hole)
500 drug supply device 503 drug support frame (support frame)
509 supply hose 510 drug nozzle (supply nozzle)
512 suspension support frame (suspension frame)
516 Hanging mounting hole (mounting hole)
517 compression load spring (load adjustment member)
519 extension plate (extended suspension frame)
520 extension plate (extended mounting hole)

Claims (2)

Planting devices (20a, 20b) for planting seedlings on a traveling vehicle body (40), a suppression device (37) for leveling the circumference of the seedlings planted by the planting devices (20a, 20b), and a seedling planting position. In a transplanter provided with a drug supply device (500) that supplies drugs in the vicinity,
The medicine supply device (500) is supported by the suppression device (37) and the traveling vehicle body (40), and is configured to move up and down together with the suppression device (37) ,
The suppression device (37) comprises a suppression frame (370) rotatably provided on the traveling vehicle body (40) and suppression wheels (371, 371) attached to the suppression frame (370). (370) is provided with a support frame (503) for the drug supply device (500);
A suspension frame (512) is provided on the handle frame (402) of the traveling vehicle body (40), and the load of the medicine supply device (500) is received between the support frame (503) and the suspension frame (512). A member (517) is provided,
A mounting hole (516) for mounting a load adjusting member (517) is formed in the suspension frame (512) in the left-right direction so that the position of the planting device (20a, 20b) can be adjusted in the left-right direction of the machine body. compose and
An extension suspension frame (519) can be attached to the left and right sides of the suspension frame (512), and the extension attachment hole (520) is formed in the extension suspension frame (519) in the left and right direction. A transplanter characterized in that it has formed . The crushing frame (370) is formed with a mounting portion (374a) for a weight (374) for adjusting the crushing load,
2. The transplanter according to claim 1, wherein the support frame (503) is formed with a mounting hole (374b) into which the mounting portion (374a) to which the weight (374) is attached can enter.

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