JP2021180616A - Transplanter - Google Patents

Abstract

To provide a transplanter capable of reducing the force required to push down the control handle so that the front side of the transplanter may be lifted during turning operations.SOLUTION: Planting devices 20a, 20b for planting seedlings in the field are provided on a vehicle body 40; a steering member 404 for performing operations such as swing motion is provided on the body rear part of the vehicle body 40; an auxiliary step 412 to be depressed during the swing motion so as to help lift the front side of the vehicle body 40 is provided below the steering member 404; a step frame 411 is provided on the steering member 404 in an inclined position toward the body rear part; more than one auxiliary step 412 is provided on the step frame 411; a transmission case 26 for activating the planting devices 20a, 20b is provided; a connection plate 400 is provided on the transmission case 26; a step reinforcing member 413 is provided on the step frame 411; and a reinforcing rod 414 connects the step reinforcing member 413 and the connection plate 400.SELECTED DRAWING: Figure 14

Description

The present invention relates to a transplanting machine for transplanting vegetable seedlings such as onions and lettuce into a field.

Conventionally, a seedling supply device and a seedling planting hopper are provided at the rear of the machine, and a control handle that allows the operator to lift the machine in the direction of travel and when turning and when turning at the ridges or when moving outside the field. There is known a transplant machine equipped with an engine, a mission case, and a work seat on which a worker rides during planting work (Patent Document 1).

Japanese Unexamined Patent Publication No. 2020-68742

In the transplanting machine of Patent Document 1, heavy objects such as a seedling supply device and a seedling planting hopper are arranged on the rear side of the machine, while heavy objects such as an engine and a mission case are also arranged on the front side of the machine. Therefore, a certain amount of force is required when pushing down the control handle to lift the front side of the traveling vehicle body.

At this time, the worker needs to perform this work mainly by using the force of the upper body, particularly the arm and the back muscle, and it is necessary to spend a large amount of force in a biased manner. On the other hand, the force of the lower body, which is relatively easy to apply force, is difficult to utilize for lifting the front side of the traveling vehicle body. Therefore, there is a problem that the operator requires a large amount of labor during the turning run and the turning running cannot be performed efficiently.

It is an object of the present invention to provide a porting machine capable of reducing the force required when pushing down the control handle in order to lift the front side of the machine body at the time of turning operation in consideration of the conventional problems.

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

The invention according to claim 1 is a planting device (20a, 20b) for planting seedlings in a field of a traveling vehicle body (40), and a control member (404) for maneuvering such as turning at the rear portion of the traveling vehicle body (40). In the transplant machine provided with the above, an auxiliary step (412) is provided below the control member (404) to assist in lifting the front part of the traveling vehicle body (40) by stepping on the steering member (404) during turning. It was an opportunity.

According to the second aspect of the present invention, the control member (404) is provided with a step frame (411) in an inclined posture toward the rear side of the machine body, and the step frame (411) is provided with one or more auxiliary steps (1 or more). The transplantation machine according to claim 1, characterized in that 412) is provided.

In the invention according to claim 3, a transmission case (26) for operating the planting device (20a, 20b) is provided, a connecting plate (400) is provided in the transmission case (26), and the step frame (411) is provided. The transplant machine according to claim 2, wherein the step reinforcing member (413) is provided, and the step reinforcing member (413) and the connecting plate (400) are connected by a reinforcing rod (414). ..

According to the fourth aspect of the present invention, the auxiliary step (412) is mounted on a step frame (411) so as to be vertically movable, and a traveling transmission case (a traveling transmission case) that raises or lowers the vehicle height when the auxiliary step (412) is rotated up and down on the traveling vehicle body (40). 38, 38) is provided, a step cable (417) is provided between the traveling transmission case (38, 38) and the step frame (411), and the traveling vehicle body (40) is rotated by the rotation of the traveling transmission case (38). The transplanting machine according to claim 2 or 3, wherein when the vehicle height becomes higher than a predetermined height, the step frame (411) is lowered to a position where the step frame (411) can be stepped on by the step cable (417). ..

In the invention according to claim 5, the auxiliary step (412) is vertically movablely attached to the step frame (411), and the seedlings planted by the planting device (20a, 20b) below the auxiliary step (412). An auxiliary compression ring (423) for leveling the soil around the sapling is provided, and an elastic member (426) for moving the auxiliary step (412) up and down depending on the contact state between the auxiliary suppression ring (423) and the field scene is provided. The transplantation machine according to claim 2 or 3.

According to the first aspect of the present invention, since it is possible to apply a force to lift the front side of the traveling vehicle body (40) by stepping on the auxiliary step (412), the force to push down the control handle (404) is reduced, which is required for turning work. Efforts can be reduced.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the step frame (411) is tilted toward the rear side of the machine body, so that the force applied when stepping on the auxiliary step (412) is applied. Since it can be moved closer to the rear side of the machine body, the force of the arm required to lift the front side of the traveling vehicle body (40) is reduced, and the turning operation can be performed efficiently.

Further, if a plurality of auxiliary steps (412) can be attached, it is possible to select an auxiliary step (412) that is easy to step on according to conditions such as the condition of the field where the turning operation is performed and the physique of the worker. The labor can be reduced and the turning operation can be performed efficiently.

Further, when one auxiliary step (412) is attached, the number of parts is suppressed, the configuration is simple, and the labor such as maintenance is reduced.

According to the invention of claim 3, in addition to the effect of the invention of claim 2, the connecting plate (400) of the step reinforcing member (413) and the transmission case (26) is connected by the reinforcing rod (414). The strength in the vicinity of the auxiliary step (412), which is easily loaded by stepping on, can be improved, and the occurrence of damage can be suppressed.

According to the invention of claim 4, in addition to the effect of the invention of claim 2 or 3, when the vehicle height of the traveling vehicle body (40) becomes a predetermined height or more, the auxiliary step (412) moves to a position where it can be stepped on. As a result, the auxiliary step (412) can be immediately stepped on when the turning operation is required, so that the work efficiency is improved.

In addition, if the vehicle height of the traveling vehicle body (40) is less than the predetermined height, the auxiliary step (412) cannot be stepped on, so that the auxiliary step (412) is used when the vehicle height is lowered during seedling planting work or the like. ) Does not protrude downward, and contact with ridges and the ground can be prevented.

According to the invention of claim 5, in addition to the effect of the invention of claim 2 or 3, the soil around the planted seedlings is provided by providing the auxiliary suppression ring (423) below the auxiliary step (412). The roots are prevented from being exposed, and the lodging of seedlings and the occurrence of growth disorders due to temperature are prevented.

Further, by attaching the expansion / contraction member (426) and moving the auxiliary step (412) up and down depending on the contact state between the auxiliary suppression ring (423) and the field scene, the auxiliary step (412) comes into contact with the field scene and is damaged. In addition to preventing the field scene from being disturbed, the auxiliary step (412) can be stepped on when necessary, so that work efficiency is improved.

Left side view of the transplanter Right side view of the transplanter Rear view of the transplant machine Front view of the transplant machine Floor plan of the transplanter Top view showing the area around the bumper on the front side of the aircraft Side view of the main part showing the periphery of the bumper on the front side of the aircraft Perspective view of the main part showing the periphery of the bumper on the front side of the aircraft Side view of the main part of the transplant machine equipped with an irrigation pump and a check valve Perspective view of the main part showing the control part, planting device, seedling supply device, etc. at the rear of the machine Perspective view of the main part of the porting machine showing the ridge sensor, boarding step, etc. Left side view of the transplanter equipped with the rear auxiliary step Left side view of the transplanter equipped with the rear auxiliary step Perspective view of the main part showing the rear auxiliary step Perspective view of the main part showing the rear auxiliary step of another configuration example Main view showing the angle adjustment mechanism of the rear auxiliary step Left side view showing a mechanism to move the rear auxiliary step in and out according to the vehicle height adjustment Side view of the main part showing the foldable and rotatable rear auxiliary step Side view of a key part showing a rear auxiliary step with an auxiliary compression wheel Rear view showing a transplant machine with moving steps Rear perspective view of the main part showing the state where the windproof cover is attached Left side view showing a porting machine equipped with a windproof cover Plan view showing a porting machine equipped with a windproof cover Schematic diagram showing the transmission part from the engine to the gear pump Schematic diagram showing a transmission unit from the engine to the gear pump in another configuration example Rear view of the main part showing the state where the water tank is attached Top view showing the state where the water tank is attached Side view of the main part showing the state where the water tank is attached Top plan showing adjustable water tank guard (A) Side view of the main part showing the state where the planting hopper is lowered with the seedling guide tube, (b) Side view of the main part showing the state where the planting hopper is raised with the seedling guide tube. Top view showing the mounting of the seedling guide tube Schematic diagram showing the extended state by combining seedling guide tubes (A) Schematic diagram showing the engine and the dustproof cover, (b) Schematic diagram showing the combined state of the engine and the dustproof cover. (A) Schematic diagram showing a C-shaped dustproof plate, (b) Schematic diagram showing the usage state of the C-shaped dustproof plate.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

1 is a left side view showing a transplanting machine 10 for transplanting seedlings as an example of the transplanting machine according to the 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. At the same time, FIG. 5 is a plan view.

In the following description, the side where the steering wheel 404 is arranged is the rear side, and the opposite side, that is, the side where the engine 41 is arranged is the front side. Then, the right-hand side is the right and the left-hand side is the left when facing the front side of the aircraft.

As shown in FIGS. 1 to 5, the transplanting machine 10 of the present embodiment has a traveling vehicle body 40 capable of traveling forward, a steering handle 404 for walking control provided at the rear of the traveling vehicle body 40, and a field. A planting device 42 for planting seedlings and a seedling supply device 43 for supplying seedlings to the planting device 42 are provided.

The traveling vehicle body 40 is provided with a mission case 39 at the front portion of the machine body, and an engine 41 which is a drive device is provided at the front side of the mission case 39. Axle covers 101 covering the axles that can adjust the tread to change the left and right positions of the traveling wheels 44, which are the rear wheels, are connected to the lower rear parts of the fuselage on both the left and right sides of the mission case 39. A traveling transmission case 38 for transmitting a driving force to a traveling wheel 44 provided on the rear side of the machine body is mounted on the outer end portion so as to be rotatable up and down.

The engine 41 has an intake port 41a, and the intake port 41a is an aggregate of elongated slits at predetermined intervals in the circumferential direction. For this reason, there is a problem that the leaves torn from the seedlings, weeds in the field, and the like enter through the intake port 41a, which increases the time and effort for maintenance of the engine 41 and deteriorates the performance of the engine 41.

In order to solve this problem, it is advisable to cut out a metal plate or a magnet sheet into the same shape as the intake port 41a, and to attach a dustproof cover 900 in which innumerable small-diameter holes 901 are formed by punching to the intake port 41a.

As shown in FIG. 33, when the dustproof cover 900 is composed of a magnet sheet, the magnet sheet may be simply attached by magnetic force, but if the mounting position is displaced due to vibration or the like, the effect of hindering intake and preventing the intrusion of contaminants is reduced. Therefore, it is advisable to fix the two places on the top and bottom or the left and right, or the four places on the top, bottom, left and right by using push rivets 902 or the like. When the intake port 41a is not flat and has a dome shape or a conical shape, the magnet sheet shall be cut out in consideration of this shape.

When the dustproof cover 900 is formed by processing a metal plate, it is preferable that the metal plate having the hole 901 formed by punching is bent into a mountain-shaped cross section.

Alternatively, since the central portion of the intake port 41a is originally closed, as shown in FIG. 34, the spring steel material is cut out in a C shape to form the mounting portions of the push rivet 902 at the upper and lower positions, and at both ends for connection. The mounting holes of the blind rivet 903 may be formed and configured respectively.

As a result, only the portion of the intake port 41a where the slit is formed can be covered, so that the increase in weight can be reduced and the material cost can be reduced.

Depending on the type of seedlings and the environment of the planting work, it is difficult for impurities to enter, and if the dustproof cover 900 is provided, the inspiratory property may only decrease. Therefore, the dustproof cover 900 can be attached and detached according to the work environment. It shall be. If the manufacturing cost is to be further reduced, the dustproof cover 900 may be composed of a heat-resistant sticker (seal) having innumerable holes formed therein.

The left and right traveling wheels 44 are arranged between the traveling transmission case 38 and the left and right sides of the front-rear frame 103, which will be described later, to suppress the left-right width of the machine body. However, if the left and right traveling wheels 44 can be mounted on the outside of the machine body of the traveling transmission case 38 in order to meet the conditions such as the width of the ridges for planting seedlings, the working conditions that can be handled can be increased. ..

More precisely, the left and right axle covers 101 are rotatably mounted with the internal axle (not shown) as a fulcrum, and the traveling transmission case 38 is mounted on each of these axle covers 101. The axle cover 101 rotates due to the expansion and contraction of the rolling cylinder, so that the traveling transmission case 38 rotates up and down.

Then, as shown in FIGS. 1 to 5, and FIG. 10, at least the transmission case 26 is supplied to the transmission case 26 which is transmitted from the mission case 39 and supplies the driving force to the planting device 42 and the seedling supply device 43 in a branched manner. A base plate 400 that covers the left and right side surfaces and the back surface is provided, and a frame stay 401 is detachably provided at the rear portion of the base plate 400 via a fixing member such as a bolt. Then, the frame stay 401 is provided with a handle frame 402 that projects in a shape that draws an arc toward the upper rear side of the machine body, and the rear portion of the handle frame 402 is used for vertical adjustment of the vehicle height and transmission of traveling and planting work. In addition to providing a control unit 403 for operating the on / off of the seedlings, a control handle 404 to be gripped when the operator operates the machine body when moving without planting seedlings is provided. The steering handle 404 has a shape that bends in the left-right direction of the machine body and toward the rear of the machine body with the handle frame 402 as the center, and on the left and right rear sides, a side clutch operating lever 405 that turns on and off the transmission to the traveling wheel 44. Are provided respectively. Further, a first throttle lever 406 for increasing / decreasing the output of the engine 41 is provided on either the left or right side of the steering wheel 404.

A control panel 47a is provided between the left and right sides of the handle 404, and the control panel 47a is provided with a vehicle height adjusting lever 123 for adjusting the vehicle height of the traveling vehicle body 40 by expanding and contracting the lifting hydraulic cylinder 300, and left and right. The main clutch lever 125 that turns on and off the transmission of the driving force to the traveling transmission case 38 and the transmission case 26, the first engine switch 407 that switches whether the engine 41 can be started and stops, and the traveling vehicle body 40. A main speed change lever 150 for switching the transmission to either moving speed, planting work speed, running neutral or reverse is provided.

When permitting the start of the engine 41, the operator pushes in and rotates the first engine switch 407 to operate the engine 41 in the on position. As a result, when the engine 41 is started, the engine 41 is started. The engine 41 may be started by using a cell starter or a recoil starter. Further, even when the engine is operated by a drive device other than the engine 41, for example, an electric motor, the electric motor is energized and started when the first engine switch 407 is in the ON position.

When the engine 41 is stopped, when the operator lightly pushes the first engine switch 407, the engine 41 is switched to the off position by the force of the built-in torque spring (not shown), whereby the engine 41 is stopped.

Since it is only necessary to lightly push the first engine switch 407 during the off operation, running and planting can be stopped immediately. As a result, the running and planting are stopped immediately when the ridge end is reached, so that the planting operation of the seedling in the non-ridged part is prevented and the extra seedling consumed is reduced. In addition, when the aircraft is moved to the ridge where the next planting work is performed, extra movement does not occur, so that fuel consumption and working time are reduced.

On the front side of the control handle 404 and above the transmission case 26, a seedling supply device 43, which will be described later, is provided to convey the seedlings to be thrown by the operator to the left and right planting hoppers 20a and 20b. The strength of the vicinity of the control handle 404 and the seedling supply device 43 is improved and vibration is generated over the rear portion of the seedling supply device 43 and the reinforcing connecting stay 151 provided on the rear upper portion of the handle frame 402 and on the front side of the control panel 47a. A reinforcing frame 152 in the front-rear direction is provided to reduce the number.

The movement of seedlings from the seedling supply device 43 to the left and right planting hoppers 20a and 20b is performed by opening the bottom lid of the seedling container 22 at a predetermined position of the seedling supply device 43 and dropping the seedlings. Depending on the conditions such as strong wind blowing, the seedlings may be washed away by the wind before reaching the planting hoppers 20a and 20b, and may fall into the field without being planted.

In order to prevent this, as shown in FIGS. 30 and 31, in the seedling supply device 43, the position where the seedlings are dropped and supplied to the planting hoppers 20a and 20b is determined by releasing the restraint of the bottom lid of the seedling container 22. A support arm 501 is provided at the bottom of the timing plate 500 that can move in the left-right direction, and an arc-shaped guide arm 502 that protrudes from the support arm 501 toward the rear side of the machine body in the transport direction of the seedling supply device 43 is attached.

Then, within the diameter of the guide arm 502, the seedling guide cylinder 503, which is formed by winding an elastic plate such as rubber in a cylindrical shape, is rotatably arranged. The seedling guide tube 503 has a cylindrical shape by inserting a push rivet or the like from the inside of the winding area, and the lower end thereof protrudes to a position where it enters the diameter of the planting hoppers 20a and 20b that have risen to a predetermined height during the planting operation. Shall be made to.

As a result, when the seedlings are dropped and supplied from the seedling container 22 to the planting hoppers 20a and 20b, the seedlings can be moved into the planting hoppers 20a and 20b without being affected by the wind, so that the seedlings can be moved to the ridges. It is prevented that some parts cannot be planted.

In addition, by attaching a fixing member such as a push rivet from the inside of the winding area, even if the seedlings come into contact with each other, the head portion of the fixing member is almost spherical, so that the seedlings are prevented from being scratched or caught. ..

If the fixing member is attached on the upper side in the transport direction of the seedling supply device 43, the seedling can be fixed at a position where it is difficult for the seedling to fall due to the inertia during transport of the seedling supply device 43, so that contact between the seedling and the fixing member occurs. It becomes difficult.

Further, since the seedling guide cylinder 503 is composed of an elastic plate and is rotatably attached, when the seedling guide cylinder 503 comes into contact with the inside of the planting hoppers 20a and 20b, it can be elastically deformed and followed. The guide cylinder 503 and the planting hoppers 20a and 20b are prevented from being damaged or damaged.

The seedling guide tube 503 has a vertical length suitable for short seedlings, but the vertical length may be insufficient when transplanting long seedlings such as onion seedlings.

When planting seedlings under different conditions, as shown in FIG. 32, an elastic plate constituting another seedling guide cylinder 503 is wound around the lower side and the outer peripheral portion of the seedling guide cylinder 503, and the rotation shaft is rotated from the outside. The seedling guide cylinder 503 on the lower side is rotatably connected by the connecting rivet 504 that also serves as the above. At this time, the connecting rivet 504 is inserted slightly longer than the thickness of the seedling guide cylinders 503 on the inner circumference and the outer circumference, and does not come into contact with the seedlings that have entered the inside as much as possible. At this time, if the tip portion is processed into a spherical shape, scratches can be reduced even if contact is made.

As described above, since the length of the seedling guide tube 503 can be changed according to the length of the seedling, it is possible to prevent the occurrence of a portion where the seedling cannot be planted due to the influence of the wind.

Further, by rotatably connecting the seedling guide cylinder 503 on the lower side, it can be flexibly rotated when it comes into contact with the planting hoppers 20a and 20b, so that it is prevented from being damaged.

When the seedling planting work on one ridge is completed, the traveling vehicle body 40 moves to the rear side in the traveling direction of the aircraft, grips the steering handle 404 and the side clutch operating lever 405 inside the turning, and turns. The traveling vehicle body 40 is turned by blocking the transmission to the inner traveling wheel 44, and moves to the starting end side of the next planting work line. At this time, the operator puts his / her weight downward while grasping the control handle 404, and separates the front side of the traveling vehicle body 40 upward from the field scene, thereby facilitating the turning traveling.

Heavy objects such as a spare seedling frame 50 for loading a seedling box, a work seat 46, an engine 41, and a mission case 39 are arranged on the front side of the machine body with respect to the axle of the traveling wheel 44, and the front side of the traveling vehicle body 40 is upward. It is necessary to apply a force that resists the weight of the above-mentioned members and other constituent members when the above-mentioned members and other constituent members are lifted.

At this time, if the weight can be applied using the legs, the force required for the work can be easily generated, but there is no part to rest the legs on the rear part of the traveling vehicle body 40, and the worker has the strength of the upper body such as strength and back muscle strength. Need to work mainly.

As shown in FIGS. 12 to 14, in order to add weight through the foot during turning work, the front end portions of the left and right control handles 404 are connected, and the step frame is directed downward from the connecting frame 410 extending in the left-right direction of the aircraft. The 411s are arranged on the left and right sides, respectively, and a rear auxiliary step 412 is provided between the left and right step frames 411 and 411 on which the operator rests his / her feet as needed when turning or moving.

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

Further, the rear auxiliary step 412 may be configured to connect the vicinity of the lower end portion in addition to the configuration connecting the lower end portions of the left and right step frames 411 and 411. Alternatively, it is possible to reach the rear auxiliary step 412 without the worker's foot touching the control panel 47a or the like above the vicinity of the lower end portion and without forcibly raising the foot. It may be configured to be connected at the vertical position.

Furthermore, the rear auxiliary steps 412 are connected to the left and right step frames 411 and 411 at a plurality of places at predetermined intervals in the vertical direction, so that the operator can easily reach his / her feet according to his / her physique. It may be configured so that it is easy to select and the strength is increased so that it is not easily damaged.

Since it is premised that the operator puts his / her weight on the rear auxiliary step 412, not only the rear auxiliary step 412 but also the left and right step frames 411 and 411 need to have a structure resistant to the load. In order to secure this strength, as shown in the figure, a step reinforcing frame 413 connecting the left and right step frames 411 and 411 is provided at a position different from the mounting position of the rear auxiliary step 412, and the step reinforcing frame 413 and the base plate are provided. A reinforcing rod 414 may be provided at the rear of the 400, more specifically between the front and rear of the frame stay 401.

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

If the front-rear position as well as the vertical position can be changed depending on the conditions such as the position where the turning operation is performed and the physique of the operator, the rear auxiliary step 412 can be stepped on by the operator himself in a posture that is easier to step on. , It becomes possible to raise the front side of the traveling vehicle body 40 with a lighter force.

As shown in FIG. 16, the reinforcing rod 414 is divided into front and rear parts, and the other is inserted into either the front side reinforcing rod 414a or the rear side reinforcing rod 414b so as to be slidable in the front-rear direction, and the left and right steps. The frames 411 and 411 are mounted on the control handle 404 so as to be rotatable back and forth, and the front and rear lengths of the reinforcing rods 414 are changed to change the inclination angles of the left and right step frames 411 and 411. The position can be changed.

The length of the front reinforcing rod 414a and the rear reinforcing rod 414b may be fixed by fastening members such as bolts, but the length is changed only when the operator expands and contracts using a hydraulic cylinder or the like. It may be configured to be.

As a result, the operator can raise the front side of the traveling vehicle body 40 with a lighter force when starting the turning running, so that the front wheels 45 and the like come into contact with the field scene during the turning running to hinder the turning running, and the work efficiency. It is prevented from reducing the amount of water and ruining the field scene.

In the configuration in which the step reinforcement frame 413 is provided between the left and right of the left and right step frames 411 and 411, the step reinforcement frame 413 occupies one place of the mounting position of the rear auxiliary step 412. There will be fewer height options. Therefore, the upper portion of the step reinforcing frame 413 may be configured to be flat, and the rear auxiliary step 412 may be configured to be dispositionable on the upper portion.

Alternatively, the mounting position of the step reinforcing frame 413 is set to the highest position, and the rear auxiliary step 412 is arranged only on the lower side of the machine body than the step reinforcing frame 413. At this time, as shown in FIG. 14, the extension step frames 416 and 416 are mounted on the left and right sides of the rear auxiliary step 412 toward the upper side of the machine body so as to sufficiently secure the mountable range of the rear auxiliary step 412 in the vertical direction. One or more mounting holes (not shown) are formed in the extension step frames 416 and 416. Further, among the left and right step frames 411 and 411, a plurality of adjustment holes 417 ... Are formed on the lower side of the machine body from the mounting position of the step reinforcement frame 413, and the adjustment holes 417 ... , 416 is configured to be provided with a fastening member 418 such as a bolt in the mounting hole.

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

As shown in FIG. 15, a plurality of the adjusting holes 417 ... Formed in the vertical direction and the mounting holes are communicated with each other to form a long hole, and when the fastening member is loosened, the extension step frames 416 and 416 can move in the vertical direction. When tightened, the vertical movement of the extension step frames 416 and 416 is restricted, and the vertical position of the rear auxiliary step 412 may be fixed.

In FIGS. 14 to 16, the left and right extension step frames 416 and 416 are in contact with the left and right step frames 411 and 411 from the outside of the machine body, but the left and right step frames 411 and 411 are also in contact with the left and right step frames 411 and 411 from the inside of the machine body. good.

The rear auxiliary step 412 is used by adjusting it to a vertical position where the operator can easily step on it. However, depending on the vertical position, the rear auxiliary step 412 may come into contact with the ridges when performing the planting work. It is necessary to move it to a position higher than the surface, which reduces work efficiency.

In order to prevent this, as shown in FIG. 17, the left and right extension step frames 416 and 416 are provided so as to be movable in the vertical direction along the left and right step frames 411 and 411, and either the left or right extension step frames 416 or 416 are provided. One side end of the step cable 416a is connected to one or both. Then, the other end of the step cable 416a is connected to the rear side of the arm 13 provided in the upper part of the front side of the traveling transmission case 38 which changes the vehicle height of the traveling vehicle body 40 by rotating.

When the traveling transmission case 38 is rotated downward, that is, in a direction in which the vehicle height of the traveling vehicle body 40 is increased, the step cable 416a is loosened and the rear auxiliary step 412 is lowered to a vertical height at which it is easy to step on. When the traveling transmission case 38 is rotated upward, that is, in a direction in which the vehicle height of the traveling vehicle body 40 is lowered, the step cable 416a is pulled and the rear auxiliary step 412 rises to a vertical height that does not contact the ridge surface. The configuration is to be used.

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

Alternatively, as shown in FIG. 18, the left and right extension step frames 416 and 416 are mounted on the left and right step frames 411 and 411 so as to be vertically rotatable, and the left and right extension step frames 416 and 416 are designated on the upper front side of the machine body. Rotation control pins 418 and 418 are provided, respectively, which come into contact with the left and right step frames 411 and 411 by the amount of rotation and regulate further rotation. Alternatively, one rotation restricting pin 418 may be provided over the left and right extension step frames 416 and 416. Lock springs 419 and 419 are provided over the rear side of the left and right step frames 411 and 411, respectively, and the vertical rotation amount of the left and right extension step frames 416 and 416 becomes the rotation amount that exceeds the fulcrum, thereby assisting the rear part. Step 412 is configured to switch to either a stepping position for turning or a storage position located above the ridge surface.

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

Since the operator can step on the rear auxiliary step 412 to rotate from the storage position to the stepping position, it is not necessary to touch the rear auxiliary step 412 by hand, and the operator's hand becomes dirty with dirt or the like. This is prevented, and there is no need to crouch during operation, which reduces the labor of the operator.

Another configuration example using the rear auxiliary step 412 will be described.

As shown in FIG. 19, sliding pins 420 are formed on the left and right extension step frames 416 and 416, respectively, and the slides are formed on the sliding elongated holes 421 and 421 formed on the lower side of the left and right step frames 411 and 411 in the vertical direction. Each of the moving pins 420 is inserted, and the left and right extension step frames 416 and 416 are mounted so as to be vertically movable within a predetermined range. Then, auxiliary compression springs 422 and 422 that urge the left and right extension step frames 416 and 416 downward are provided over the left and right step frames 411 and 411 and the left and right extension step frames 416 and 416, respectively.

Further, the left and right step frames 411 and 411 and the left and right extension step frames 416 and 416 are arranged on the side of the seedling planting position at a position close to the center in the left-right direction of the aircraft in the front (rear) view. At the bottom of the left and right extension step frames 416 and 416, auxiliary compression rings 423 that come into contact with the ridges and level and solidify the soil lifted during planting of seedlings are rotatably provided.

At this time, the rear auxiliary step 412 shall rise when the left and right auxiliary compression rings 423 and 423 touch the ridge surface, and descend when separated from the ridge surface.

With the above configuration, the soil on the side of the planted seedlings can be leveled and solidified by the left and right auxiliary suppression rings 423 and 423, although the roots of the seedlings are exposed, and poor growth is caused by the influence of temperature. It prevents the seedlings that have been planted from falling due to waking up or the influence of wind.

Further, since the left and right auxiliary compression wheels 423 and 423 come into contact with the ridge surface while being loaded by the auxiliary compression springs 422 and 422, the traveling posture of the traveling vehicle body 40 is less likely to be disturbed, and the seedling planting accuracy is stable. do.

Alternatively, as shown in FIG. 20, a moving step 424 for the operator to board during the planting work is provided on either one of the left and right sides or both sides of the left and right step frames 411 and 411 so as to be rotatable left and right, and the moving step 424 is provided. A ridged groove grounding ring 425 that touches the ridged groove on the side of the ridge is rotatably mounted on the bottom surface side when the is rotated to the used position. Then, an pulling spring (not shown) for pulling the moving step 424 to the left and right step frames 411 is provided over the left and right step frames 411 and the moving step 424.

The moving step 424 is composed of a thick plate having a strong load bearing capacity. At this time, instead of a simple plate body, the reinforcing material may be arranged avoiding the mounting position of the ridged groove ground ring 425, or the strength may be increased by arranging the mounting member of the ridged groove grounding ring 425. As an example, the arrangement at this time is such that a plurality of plates are crossed to form a mesh and the plates are covered on the net.

Further, for the ridge ground contact ring 425, a pneumatic tire may be used if the load bearing capacity and the suspension property are to be improved. On the other hand, if load bearing capacity is important, it is preferable to use a solid tire having a solid structure using resin or metal.

With the above configuration, the worker does not have to follow the rear of the traveling vehicle body 40 to walk when planting the seedlings, so that the labor of the worker is reduced. Since the ridges for planting general vegetable seedlings are formed linearly, steering is basically unnecessary.

Further, since the moving step 424 is rotated in the left-right direction, the operator is located behind the seedling supply device 43 and on the left-right side, so that the position can be easily confirmed when the seedlings are put in.

When another worker gets on the work seat 46 and supplies the seedlings to the seedling supply device 43, the worker on the moving step 424 supplementarily supplies the seedlings to the seedling supply device 43 when there is an input error. At other times, check the condition of the course of the traveling vehicle body 40, for example, the condition of the ridges, the inclination of the field, the presence or absence of stones on the ridges, and inform the worker on the work seat 46 side, or the traveling vehicle body. It is assumed that the planting state of the seedlings is confirmed by looking at the rear of the 40.

A U-shaped bumper support frame 108 is provided on the front side of the machine body and on both the left and right sides of the mission case 39 so as to project toward the front side of the machine body in a front cross-sectional view. Then, in front of the left and right bumper support frames 108, bumpers 109 projecting to the front side of the machine body are provided.

As shown in FIGS. 6 to 8, the bumper 109 includes a bumper plate 109a whose front side and left and right sides of the plate body are bent downward, a front weight 109b which can be attached to and detached from the upper surface of the bumper plate 109a, and a bumper plate. It is composed of a bumper rod 109c extending in the left-right direction from 109a. The front weight 109b is made of a mass of a relatively heavy and hard material such as iron, and has a shape protruding toward the front side of the machine body from the bumper plate 109a.

As a result, the front weight 109b, which is a mass having weight and hardness, protrudes most to the front of the machine body, so that it is possible to prevent damage to the bumper plate 109a when it comes into contact with an obstacle.

The left and right bumper support frames 108 are formed on the front side of the fuselage and on the lower side of the fuselage with recesses (not shown) having openings on the lower side of the fuselage. Insert and fix the frame 110.

By providing the front beam frame 110, the left and right bumper support frames 108 and the mission case 39 can be assembled into a quadrangular frame on the front side of the machine body, so that the strength of the front side of the machine body is improved. In particular, when the bumper 109 comes into contact with an obstacle, the left and right bumper support frames 108 are inserted and fixed to the front beam frame 110, so that damage or impact is less likely to propagate to the rear side of the left and right bumper support frames 108. Become.

Further, when assembling the mission case 39 to the airframe, 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 to fix the front-rear position of the mission case 39 and then to the left-right position. Is possible, so that the assembly work is prevented from being delayed due to the deviation of the mounting position of the mission case 39.

The rear portion of the engine 41 is loaded on the front side of the mission case 39 and on the left and right sides, and the front portion of the engine 41 is loaded on an engine mount arranged near the left and right center portions of the front beam frame 110. However, the bumper support frame 108 and the engine 41 on the side where the engine 41 is arranged are arranged so as to be spaced apart 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, it is possible to prevent the impact when the bumper 109 comes into contact with an obstacle from propagating from the bumper support frame 108 to the engine 41, thereby preventing the engine 41 from being damaged or causing malfunction due to the impact. can.

Further, even if the bumper support frame 108 is deformed by an impact, the load state of the engine 41 is less likely to be affected, and even if the bumper 109 is damaged, the work or movement can be performed by the power of the engine 41.

Then, on the left and right sides of the bumper plate 109a, step support plates 111 having recesses in the left-right direction for mounting the bumper rod 109c are mounted. The left and right step support plates 111 are configured to be supported via reinforcing arms 112 provided on the rear side of the front beam frame 110 and on both the left and right sides, respectively.

The upper surfaces of the left and right step support plates 111 are flat, and on one side of the traveling vehicle body 40 on the left and right sides of the aircraft, that is, on the left side of the aircraft, the front side portion of the front boarding step 113 on which the operator puts his / her foot when getting on and off from the front side of the aircraft. To wear. On the other hand, on the left and right sides of the machine, that is, on the right side of the machine, the front-rear distance between the seedlings to be planted by the planting hoppers 20a and 20b, that is, the so-called inter-strain spacing is set. Form an inter-stock switching cover 114 that supports a planting shift lever 803 that selects a first planting speed or a second planting speed when is being operated to the planting speed.

The front boarding step 113 includes a lower footrest portion 113a located on the front side of the aircraft and on the lower side in the vertical direction, and an upper footrest portion 113b located on the rear side of the aircraft and on the upper side in the vertical direction with respect to the lower footrest portion 113a. It is located between the upper and lower parts of the lower footrest portion 113a and the upper footrest portion 113b, and is composed of an intermediate inclined portion 113c that is twisted and inclined toward the outside of the machine body. A plurality of non-slip protrusions 113d are formed on the surface of the lower footrest portion 113a, and the intermediate inclined portion 113c has an inclined angle that makes it difficult for the operator to psychologically place the foot when getting on and off, and the lower footrest portion It is the front-rear length that is passed across the 113a when moving between the upper footrest portion 113b.

On the other hand, the inter-stock switching cover 114 includes a lower base portion 114a located on the front side of the machine body and on the lower side in the vertical direction, and an upper base portion 114b located on the rear side of the machine body and on the upper side in the vertical direction with respect to the lower base portion 114a. Located between the upper and lower sides of the lower pedestal 114a and the upper pedestal 114b, it twists and tilts toward the outside of the machine, and the inter-stock main shift lever 801 and the inter-stock sub-shift lever 802, and the main shift lever 150 move, respectively. It is composed of a lever mounting portion 114c having a moving groove formed therein.

The front boarding step 113 and the inter-stock switching cover 114 have symmetrical shapes, and the inter-stock switching cover 114 may be provided on one side of the left and right sides of the machine, and the front side boarding step 113 may be provided on the other side of the left and right sides of the machine.

Then, on the rear side of the machine body of the upper footrest portion 113b and the upper base part 114b, a side step 118 is provided so that a worker can get on and off from the side of the machine body and serve as a scaffold for work. In the side step 118, plate bodies are arranged vertically and horizontally in the frame to form a plurality of space portions, and the soil adhering to the sole of the worker is dropped downward. Further, a central step 119, which serves as a scaffold for the worker to be boarded, is detachably provided between the left and right sides of the left and right side steps 118.

As described above, the floor step 122 is configured.

The front boarding step 113, the inter-stock switching cover 114, the left and right side steps 118, and the center step 119 are mounted independently, that is, they are not fastened together with one mounting member (bolt or the like). As a result, when removing each step structure during partial maintenance work, it is not necessary to remove another step structure, and the efficiency of maintenance work is improved.

A boarding / alighting assist mechanism 170 on which an operator puts his / her foot when getting on / off the front boarding step 113 is attached to the lower part of the front side of the front boarding step 113. The boarding / alighting assist mechanism 170 has an L-shaped side view, which is located on the outside of the fuselage, and has an outer support arm 171 having a first protrusion 171a protruding in front of the fuselage below the bent portion and inside the fuselage. Located over the inner support arm 172, which is L-shaped in front view and has a second protrusion 172a protruding outward from the fuselage below the bent portion, and the first protrusion 171a and the second protrusion 172a. It is composed of the boarding / alighting assistance step 173 provided.

The outer support arm 171 is fastened together with the step support plate 111 with co-tightening bolts 174 ... and mounted on the traveling vehicle body 40. Further, the inner support arm 172 is fastened together with the bumper plate 109a with the co-tightening bolts 174 ... and mounted on the traveling vehicle body 40.

As a result, since a plurality of members are tightened with the co-tightening bolts 174 ..., the strength of the traveling vehicle body 40 near the front side of the machine body is improved, and the durability due to the load when the operator gets on and off is reduced. It will be reduced.

Further, by providing the boarding / alighting assistance step 173, even if the vehicle height of the traveling vehicle body 40 is raised according to the height of the ridges and the like, the operator puts his / her foot on the boarding / alighting assisting step 173 and the front boarding step 113 Since the foot can be stepped on the lower footrest 113a to get in and get off by the reverse operation, there is no need to raise the foot high when getting on and off, and there is no need to jump off at all, and the body of the worker. The burden on you is reduced.

Since the boarding / alighting assist step 173 is provided over the first protruding portion 171a and the second protruding portion 172a, the outer support arm 171 and the inner support arm 172 are not located within the left-right width of the boarding / alighting assist step 173. The operator's foot is prevented from coming into contact with 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 the boarding / alighting assist mechanism 170 becomes unnecessary, but also the ridges come into contact with the ridges or the slopes of the ridges depending on the vehicle height. There is a risk of breaking and reducing the planting accuracy of seedlings.

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 using the co-tightening bolt 174 ... as a rotation fulcrum. It may be possible to mount the boarding / alighting assist mechanism 170 so that it can rotate up and down.

With the above configuration, the boarding / alighting assisting mechanism 170 can be rotated upward away from the ridge surface when it is not needed, so that the boarding / alighting assisting mechanism 170 is prevented from breaking the ridges and the seedling planting accuracy is maintained.

As shown in FIGS. 1 to 8, the lower portion of the inter-stock switching cover 114 rotates downward due to its own weight and comes into contact with the ridge surface, and when the traveling vehicle body 40 reaches the end of the ridge and does not touch the ground, it further rotates downward. A ridge sensor stay 182a is provided to support the ridge sensor 182, which operates and activates a notification device 181 that informs the operator that the field edge has been reached. The notification device 181 is a communication device that notifies a buzzer or a lamp attached to each part of the traveling vehicle body 40, or an information terminal (tablet, smartphone, etc.) of an operator.

The ridge sensor 182 is provided with a rotatably provided sensor arm 183, a ridge grounding roller 184 is rotatably mounted on the lower portion of the sensor arm 183, and a grounding urging spring 185 for urging the sensor arm 183 downward. At the base of the sensor arm 183, a ridge detection switch 186 that turns on (or off) when the angle exceeds a predetermined angle is provided. The grounding urging spring 185 is configured such that the upper end side is attached to the detection adjustment plate 187 whose angle can be adjusted along the elongated hole, and the operating angle can be changed according to the ridge height.

The ridge sensor 182 is brought into contact with the ridge surface by adjusting the vehicle height of the traveling vehicle body 40 at the start of the seedling planting work traveling. By grounding the rotatable ridge grounding roller 184, the ridges are not easily broken and fine irregularities can be smoothed, so that the seedling planting accuracy can be improved.

Then, when the traveling vehicle body 40 continues to move forward and reaches the end of the ridge and the ridge grounding roller 184 does not come into contact with the ridge surface, the urging force of the grounding urging spring 185, the sensor arm 183, and the ridge grounding roller Due to the weight of 184, the sensor arm 183 rotates downward, and the ridge detection switch 186 is not pressed. When the ridge detection switch 186 is no longer pressed, the notification device 181 is energized to operate 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 end.

When the ridge sensor 182 detects the ridge, the ridge still has a planting space for several stocks, so the operator does not stop the aircraft immediately, but the remaining planting space. While putting the number of seedlings to be planted in the seedling supply device 43 into the seedling supply device 43, the stop operation is prepared.

As a result, the worker can know the approach to the ridge without looking back, so that the aircraft can be stopped at the timing when the seedlings are planted on the ridge, and the fuel consumption due to extra running and the next It is prevented that the moving distance to the work line is long.

Further, since the number of seedlings to be put into the seedling supply device 43 can be adjusted when the ridges are approaching, the ridges are planted even if the planting hoppers 20a and 20b are delayed in stopping the planting work. It is prevented that seedlings are released to places other than the above.

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

As a result, when either one of the left and right sensor arms 183 and 183 rotates downward and one of the corresponding ridge detection switches 186 and 186 is not pressed, the notification device 181 operates and the ridge ends. Even if the shape is distorted due to wind and rain, the ridges can be easily detected, and the operator can stop the planting work at the right time.

Further, on both the left and right sides of the traveling vehicle body 40 on the front side of the machine body, and on the front side of the machine body with respect to the traveling wheel 44, the vehicle rolls via a horizontal frame 16 provided on the lower side of the front beam frame 110 and projecting in the left and right direction of the machine body. A front wheel 45 that is movably supported is provided.

Then, the tip of the wheel drive shaft extending outward from the mission case 39 to the left and right sides enters the rotation axis position of the front portion of the traveling transmission case 38, and the traveling unit system shift in the transmission case 39. The power for traveling through the transmission unit is transmitted to the transmission mechanism in the traveling transmission case 38. Then, the power for traveling is transmitted to the transmission axle of the traveling transmission case 38 via the transmission mechanism in the traveling transmission case 38, and the traveling wheel 44 is driven and rotated.

Further, the traveling transmission case 38 is connected to a driving means that rotates up and down to move the traveling wheel 44 up and down with the front side of the traveling transmission case 38 as a rotation fulcrum. 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 elevating hydraulic cylinder 300 in which the arm 13 is fixed to the mission case 39. It is connected to the left and right sides of the connecting body attached to the tip of the piston rod. One left and right side (right side) is connected by a connecting rod, and the other side (left side) is connected by a left and right control hydraulic cylinder that can be expanded and contracted according to the inclination of the machine body.

When the elevating hydraulic cylinder 300 operates and its piston rod protrudes to the rear of the machine body, the left and right arms 13 rotate backward, and the traveling transmission case 38 rotates downward accordingly, and the machine body rises. On the contrary, when the piston rod of the lifting hydraulic cylinder 300 moves to the front of the machine body and retracts into the cylinder, the left and right arms 13 rotate forward, and the traveling transmission case 38 rotates upward accordingly. The aircraft descends.

The lifting hydraulic cylinder 300 is operated by a ridge surface sensor 14 that touches the ridge surface and operates as the vertical distance between the machine body and the ridge surface fluctuates. The operation of the ridge surface sensor 14 is an operation of detecting the height of the upper surface of the ridge based on the position of the machine, and the height of the machine is set according to the height of the upper surface of the ridge based on the detection operation of the ridge sensor 14. 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 arm 13 connected to the left-right horizontal control hydraulic cylinder rotates, and only the left traveling wheel 44 is moved up and down to tilt the machine to the left and right. .. The left-right horizontal control hydraulic cylinder is configured to operate based on the detection result of the sensor that detects the left-right tilt of the machine with respect to the left-right horizontal to make the machine horizontal.

As shown in FIGS. 1, 2 and 5, the horizontal frame 16 is rotatably mounted on the front beam frame 110 at the center of the axis in the front-rear direction, and is mounted on both left and right sides of the horizontal frame 16. , A long vertical frame 17 is attached vertically. The left and right front wheels 45 are rotatably attached to the front wheel axle 18 fixed to the lower end side of the vertical frame 17. Therefore, the left and right front wheels 45 are rotatable around the axis in the front-rear direction at the center of the left and right sides of the machine body. Further, the vertical frame 17 is provided so as to be vertically adjustable with respect to the left and right side portions of the horizontal frame 16, so that the height of the front wheel 45 can be adjusted.

The steering handle 404 is provided at the rear portion of the fuselage, and is located on the rear side of the fuselage with respect to the transmission axle of the traveling wheel 44. Specifically, it is attached to the rear end portion of the airframe frame 19 in which the front end portion is fixed to the mission case 39.

The airframe frame 19 extends rearward at the center of the left and right sides of the airframe, and extends diagonally rearward and upward from the front-rear intermediate portion.

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

Although the grip portion is divided into left and right in FIG. 2, the left and right rear end portions of the steering handle 404 may be connected to each other on the left and right, and the connected portion may be used as the grip portion.

The planting device 42 raises and lowers a plurality of beak-shaped planting tools whose tips point downward, and a position where the lower end of the planting tool is above the field scene and at a position below the field scene. The vertical movement mechanism 21 to move, the closed state where the lower end of the beak-shaped planting tool is closed and the seedlings can be received from above and the seedlings can be stored inside, and the lower end of the planting tool opens to the left and right and is stored inside. It is equipped with an open / close mechanism that opens and closes the planting tool in an open state that allows the seedlings to 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 the first planting hopper 20a and the second planting hopper 20b are arranged side by side. The first planting hopper 20a and the second planting hopper 20b are respectively mounted on the vertical movement mechanism 21 provided on both the left and right sides of the transmission case 26 transmitted from the mission case 39.

The above-mentioned planting hoppers 20a and 20b take over the seedlings at or near the position where they rise and are closest to the seedling supply device 43, but the seedlings are moved up and down between the seedling supply device 43 and the planting hoppers 20a and 20b. There is a gap, and this vertical gap remains exposed. There is no particular problem during normal work, but on the other hand, when planting work on a windy day, if the weight of the seedlings is light, the fall trajectory of the seedlings supplied from the seedling supply device 43 There is a possibility that seedlings will not enter the inside of the planting hoppers 20a and 20b, resulting in a stock shortage section in which seedlings cannot be planted.

As shown in FIG. 21, in order to prevent the seedling supply error due to the wind, as shown in FIG. Is provided. The windbreaker support plate 431 is arranged so that the hypotenuse is located on the rear side of the airframe.

A windbreaker cover 433 is provided over a position adjusting frame 432 that adjusts the drop supply position of seedlings and a load adjusting shaft 374 that rotatably supports a plurality of load adjusting rods 373 ... provided on each suppression arm 370. , The left and right sides of the windbreak cover 433 are attached to the left and right windbreak support plates 431 and 431. The left and right sides of the windbreak cover 433 shall be covered up to the front side of the fuselage on the outer surface of the left and right windbreak support plates 431 and 431.

The windproof cover 433 may be formed by forming a single metal or resin plate into a corresponding shape, or may be configured by combining a plurality of plates, but it is a part of the operation of the planting hoppers 20a and 20b. Will be difficult to see, it will be difficult to perform an operation test, and the weight of the machine and the manufacturing cost will increase. In addition, since it is necessary to match the dimensions of metal and resin, it takes time to attach and detach them.

Therefore, it is desirable that the windproof cover 433 is made of a transparent, flexible, relatively inexpensive, and easy-to-procure material such as vinyl chloride. When using a transparent soft material for the windbreak cover 433, attach it to the windbreak support plates 431 and 431 and the position adjustment frame 432 with plastic rivets, etc., and wrap the rear side of the machine around the load adjustment shaft 374 to cover at least the double part. It shall be configured to be fastened together with plastic rivets or the like.

The windbreak cover 433 is formed with a notch through which the visual recognition rotation arm 154 of the visual recognition member 155 is rotatably passed and a space portion for avoiding the load adjusting rod 373 according to the machine body configuration.

It is desirable to attach the windproof cover 433 made of soft material in a stretched state in order to prevent it from interfering with the vertical movement of the planting hoppers 20a and 20b. There is a risk that some of the seedlings will be rolled up and the seedlings that are dropped and supplied to the planting hoppers 20a and 20b will be blown away by the wind. In order to prevent this, it is possible to cut a slit in the outer peripheral portion of the windbreak cover 433 or a portion where wind is difficult to enter to prevent the windproof cover 433 from coming off due to wind pressure.

In the above-mentioned work environment where the fall supply of seedlings is hindered by the wind, the workers who board the traveling vehicle body 40 to supply the seedlings and the seedlings loaded on the spare seedling frame 50 are also exposed to the strong wind. There is a risk that work efficiency will decrease due to a decrease in the sensible temperature and dust that the wind winds up.

As shown in FIGS. 22 and 23, in order to reduce the influence of wind on the traveling vehicle body 40, first cover bosses 434 and 434 are provided on the front side portion of the seat support frame 46a that supports the work seat 46, and left and right spare seedlings are provided. A second cover boss 435 on the front side and a third cover boss 436 on the rear side are provided on the outer sides of the frames 50 and 50, respectively, and a fourth cover boss 437 is provided on the rear side of the machine body of the seedling supply device 43. Then, the mounting support shafts 438a and 438b provided in the front and rear of the first cover arm 438 in the front and rear of the first cover boss 434 and 434 and the second cover boss 435 and 435 in the vertical direction are inserted into the left and right first cover bosses 434 and 434, respectively, and left and right. The second cover arm 439 is arranged over the third cover boss 436 and 436 and the fourth cover boss 437 via a support column having a longitudinal direction in the vertical direction.

The first cover arm 438 is an arc-shaped member obtained by cutting out about a quarter to one-sixth of the ring, and the second cover arm 439 is an arc-shaped member obtained by cutting out about half to two-thirds of the ring. It is a member of. Further, one of the front mounting shaft 438a and the rear mounting shaft 438b of the first cover arm 438 has a longer vertical length than the other, and one is completely extracted from the first cover boss 434 or the second cover boss 435. However, the other is configured to be partially located inside the first cover boss 434 or the second cover boss 435.

Then, a windproof cover 433 made of a soft material is attached over the outer circumferences of the left and right first cover arms 438 and 438 and the second cover arm 439. At this time, the vertical length of the windbreak cover 433 shall extend from the upper surface of the side step 118 to the upper end portion of the spare seedling frame 50, or shall protrude upward from the upper end portion of the spare seedling frame 50. Reduce the effects of wind and dust on workers and seedlings for replenishment. If the left and right first cover arms 438 and 438 and the second cover arm 439 are provided one step at a time in the vertical direction and the windbreak cover 433 is bent due to insufficient tension, the left and right first cover arms 438, 438 and The second cover arm 439 may be arranged in a plurality of stages in the vertical direction of the front mounting shaft 438a, the rear mounting shaft 438b, and the strut portion at intervals in the vertical direction.

As an example of mounting the windbreak cover 433, the start end may be wound as the inner end of the first cover arm 438 on either the left or right side, and the end may be wound as the inner end of the other first cover arm 438. Conceivable.

At this time, the vertical length of the front mounting shaft 438a is shorter than that of the rear mounting shaft 438b, and when the first cover arm 438 is lifted upward, the rear mounting shaft 438b is used as a rotation fulcrum to rotate in the outward direction of the machine body. Since it is configured, it is possible to secure an entrance / exit from the front portion of the traveling vehicle body 40. Further, since the winding start end and the end of the windbreak cover 433 are the inner end portions of the first cover arms 438 and 438, respectively, when getting on and off from the front side of the traveling vehicle body 40, it is possible to get off from either the left or right side.

As another arrangement of the windproof cover 433, it is conceivable to separately attach the left and right first cover arms 438 and 438 and the second cover arm 439, respectively. At this time, the front mounting shaft 438a of the first cover arm 438 is lengthened up and down with respect to the rear mounting shaft 438b, and the first cover arm 438 can be rotated in the outward direction of the machine body with the front mounting shaft 438a as a rotation fulcrum. When configured, it is possible to secure the entrances and exits on the left and right sides of the traveling vehicle body 40.

In the above configuration, the windbreak cover 433 is wound in a circular shape, but the first cover arm 438 and the second cover arm 439 are configured by connecting rods, and the windbreak cover 433 is hexagonal, octagonal, or polygonal. It may be mounted in the form of drawing a shape. At this time, the polygonal shape may have equal sides or unequal sides in consideration of ease of getting on and off and windbreak effect.

Since the windbreak cover 433 can be removed when it is not necessary, such as when the wind is weak, it is not necessary to reduce the degree of freedom in getting on and off and the visibility when there is no influence of the wind.

The current planting depth of the plurality of load adjusting rods 373 ... can be determined by the amount of protrusion upward, but when the operator visually recognizes from the traveling vehicle body 40, the operator looks down from diagonally above, so that the rods are visually viewed. It is difficult to judge.

In order to make it easier for workers on the traveling vehicle body 40 to visually determine the current planting depth, an inverted L-shaped depth display plate 450 is directed toward the rear side of the machine body from the rear of the seedling supply device 43. The load adjusting rod 373 penetrates the depth display plate 450. At this time, the upper side of the load adjusting rod 373 is provided with a scale indicating the planting depth in the vertical direction, for example, in units of 1 cm, and the operator sets a numerical value located on the upper surface of the depth display plate 450. It shall be read visually.

As a result, the operator can grasp the current planting depth while riding on the traveling vehicle body 40, so that the work is immediately interrupted and corrected when a scale deviating from the set planting depth is seen. Will be possible. This prevents the seedlings from being continuously planted at a planting depth different from the planting depth setting, and improves the planting accuracy of the seedlings.

The depth display plate 450 may be long in the left-right direction of the machine body, and the load adjusting rods 373 ... With scales may be arranged side by side so that the planting depth of each row can be visually observed.

Each seedling container 22 has a tubular body that opens up and down and a bottom lid that opens and closes an opening on the lower side of the tubular body, and is connected to each other in a loop.

The moving mechanism 23 is a state in which each connected seedling accommodating body 22 passes above and near the left and right planting hoppers 20a and 20b, and the connected seedlings are formed by a long circular loop-shaped locus on the left and right in the plane view of the machine body. The accommodating body 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 the present embodiment, a cylindrical outer peripheral portion is formed on the outer peripheral portion of the seedling accommodating body 22, and an engaging portion (round hole) rotatably connected from the outside is provided on the outer peripheral portion of the cylinder to provide two seedling accommodating bodies 22. A plurality of connecting bodies for connecting the above were formed. Then, the engaging portion of the connecting body is rotatably connected to the outer peripheral portion of the cylinder of the seedling accommodating body 22, and the adjacent seedling accommodating body 22 is rotatably connected with the outer peripheral portion of the cylinder as the rotation axis. , A plurality of seedling containers 22 are connected to each other. That is, the seedling accommodating body 22 and the connecting body are connected like an endless chain.

As a result, the seedling accommodating body 22 is left and right from the seedling accommodating body 22 because the distance between the seedling accommodating body 22 and the adjacent seedling accommodating body 22 does not change in both the linear portion 28 that moves linearly and the arc-shaped portion 29 that moves in an arc shape. At the place where the seedlings are supplied to the planting hoppers 20a and 20b, the positional deviation based on the left and right planting hoppers 20a and 20b of the seedling container 22 is less likely to occur, and the seedlings are properly supplied and the seedlings are appropriate. Can be planted.

The moving mechanism 23 of the seedling supply device 43 winds the seedling accommodating bodies 22 connected to each other like an endless chain around the arcuate notches on the outer periphery of the sprockets provided on the left and right, and takes out the left and right sprockets from the transmission case 26. Each seedling accommodating body 22 is configured to rotate around by driving and rotating with the power of the seedling.

The orbital movement path around which the seedling container 22 orbits is a length including a linear portion 28 extending in the left-right direction in a plan view and an arc-shaped portion 29 that bends in an arc shape from the linear portion 28 to the front side or the rear side by a sprocket. It has a circular shape and is arranged inside the machine body from the left and right traveling wheels 44.

The seedling accommodating body 22 of the seedling feeding device 43 moves relatively stably in a predetermined direction in the linear portion 28, but in the arcuate portions 29 on both the left and right sides, the distance between the seedling accommodating bodies 22 is narrowed or widened. This may cause damage to the drive of the seedling supply device 43, or may cause the seedling drop supply timing to become unstable. In order to prevent this, star foils 240 and 240 that are driven and rotated are provided on the inner peripheral edges of the plurality of seedling containers 22 and on the left and right outer portions of the seedling supply device 43, respectively. Protrusions are formed at equal intervals on the outer peripheral edge of the 240. By allowing these protrusions to enter the interval portion of the seedling container 22, the position of each seedling container 22 when passing through the arcuate 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 deviation of the timing of dropping and supplying seedlings.

The worker sits on the work seat 46 or stands on the floor step 122 to supply the seedlings to the seedling supply device 43, but when the seedlings for replenishment are exhausted or some problem, for example, the planting posture of the seedlings When abnormalities occur continuously, seedlings cannot be planted, etc., it is necessary to stop the traveling of the traveling vehicle body 40 and stop the driving of the planting hoppers 20a and 20b. Further, when the traveling speed or the ascending / descending pace of the planting hoppers 20a and 20b is faster than the pace of the worker, it is necessary to reduce the output of the engine 41 and change the speed so that the work can be easily performed.

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

The second engine switch 408 has the same operation method as the first engine switch 407, but the engine 41 is not operated unless both the first engine switch 407 and the second engine switch 408 are operated in the on position. It shall not start.

As a result, when the operator grips the control handle 404 behind the machine and steers it when moving, the first engine switch 407 can be used to stop the operation, and the worker is on the traveling vehicle body 40 when planting seedlings. At this time, the engine 41 can be stopped by turning off the second engine switch 408, so that there is no need to get off the traveling vehicle body 40 and go to turn off the first engine switch 407 while boarding, and the planting or the aircraft The operation that causes the problem can be interrupted.

Further, since the second throttle lever 409 can be operated from above the traveling vehicle body 40, it is not necessary to get on and off the traveling vehicle body 40 when increasing or decreasing the output of the engine 41, and the work efficiency and work accuracy are improved.

Further, the left and right planting hoppers 20a and 20b are arranged on the rear side of the position of the transmission axle.

The seedling supply device 43 is configured such that the seedling accommodating body 22 orbits around in accordance with the left and right planting hoppers 20a and 20b to supply seedlings.

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

Further, a seedling accommodating body 22 for accommodating seedlings to be dropped and supplied corresponding to the left and right planting hoppers 20a and 20b is separately provided, and above the left and right planting hoppers 20a and 20b corresponding to the seedling accommodating body 22. The bottom lid opens only when it comes, and the bottom lid does not open above the left and right planting hoppers 20a and 20b that do not correspond.

That is, the seedling accommodating body 22 corresponding to the planting hopper 20a reaches the first drop supply position 31a only, and the seedling accommodating body 22 corresponding to the planting hopper 20b comes to the second drop supply position 31b. The bottom lid is opened and seedlings are supplied to the corresponding planting hoppers 20a and 20b.

The first drop supply position 31a and the second drop supply position 31b are configured to be movable to the corresponding positions when the space between the left and right planting hoppers 20a and 20b is adjusted.

The operation cycle of the moving mechanism 23 is set to be synchronized with the operation cycle of the vertical movement mechanism 21, and the seedling accommodating bodies 22 corresponding to the left and right planting hoppers 20a and 20b are combined to form one seedling accommodating body unit. By connecting a plurality of seedling housing units, the seedling housing 22 passes through the left and right drop supply positions 31a and 31b in series, and the seedlings are supplied corresponding to the left and right planting hoppers 20a and 20b. The seedlings can be supplied without leakage, and the seedling housing 22 to which the seedlings have not been supplied after passing through the left and right drop supply positions 31a and 31b is completely removed from the left and right planting hoppers 20a and 20b. The structure is such that seedlings can be supplied accordingly.

In the transplanting machine 10 of the present embodiment, the soil covering suppression ring 37 used for soil covering suppression according to the seedlings planted by the left and right planting hoppers 20a and 20b is provided at the seedling planting location of the left and right planting hoppers 20a and 20b. It is provided near each rear left and right side of. The left and right soil-covering suppression rings 37 are composed of a single bar bent into a J-shape in a plan view, and the suppression arms 370 and 370 that can rotate up and down separately, and the left and right suppression arms 370 and 370, respectively. On the rear side, each is composed of a pair of left and right squeezing rotating bodies 371 and 371 that are rotatably provided.

The suppression arm 370 has one side end located inside the machine body rotatably mounted on the rear side of the traveling vehicle body 40, and the rear portion of the straight line portion protruding rearward is bent upward. It is bent outward of the fuselage and then bent downward to the front of the fuselage at the same vertical position as the straight part inside the fuselage. Of the left and right squeezing rotating bodies 371 and 371, the squeezing rotating body 371 on the outside of the machine is provided on the straight part on the outside of the machine that bends to the front side of the machine, and the squeezing rotating body 371 on the inside of the machine is attached to the straight part on the inside of the machine. Will be done.

With the above configuration, an avoidance portion 372 protruding upward from the machine body is formed at the rear portion of the suppression arm 370, and the left and right suppression rotating bodies 371 and 371 are arranged at a space between the left and right sides. As a result, the seedlings planted by the planting hoppers 20a and 20b pass through the left and right spacing portions of the left and right suppression rotating bodies 371 and 371, smooth the surrounding soil, and pass below the avoidance portion 372. It is prevented from being pushed down by the soil covering suppression wheels 37 and 37 and disturbing the planting posture.

The left and right suppression arms 370 and 370 are mounted so that the left and right positions of the machine body can be adjusted, respectively, and the positions of suppression can be changed according to the inter-strip settings of the planting hoppers 20a and 20b. In addition, if the left and right squeezing rotating bodies 371 and 371 are also configured so that the left and right positions can be adjusted, the soil around the seedlings after planting can be reliably solidified, and the seedlings may grow poorly due to lodging or low temperature. Be prevented.

The transplanting machine in this case is provided with a work seat 46 on which the worker sits so that the worker who supplies the seedlings can get on the seedling supply device 43 to perform the seedling supply work. Specifically, the work seat 46 is arranged backward at the center position on the left and right sides of the machine body, which is the front side of the seedling supply device 43. The worker sitting on the work seat 46 sits in a rearward posture toward the front side of the seedling supply device 43, and has a linear shape on the front side of the seedling supply device 43, particularly on the front side of the orbital movement path of the seedling container 22. Seedling supply work is performed corresponding to the portion 28.

Further, on the left and right other sides of the control panel 47a, a main clutch lever 125, which is built in the mission case 39 and for turning on and off the transmission of the driving force to the left and right traveling transmission cases 38 and the transmission case 26, is provided.

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

Therefore, on the traveling vehicle body 40, a vehicle body control unit 126 for a worker who is on the work seat 46 is provided.

As shown in FIGS. 4 and 11, a rear step 127 that inclines upward to the rear side of the machine body is provided in the lower part of the seedling supply device 43, and one of the left and right sides 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, a control unit 126 on the vehicle body is provided at the end of the left side with respect to the operator seated on the 46.

The on-vehicle control unit 126 arranges a second vehicle height adjusting lever 128 that adjusts the vehicle height of the traveling vehicle body 40 to adjust the planting depth of the planting hoppers 20a and 20b on the outermost side of the vehicle body. 2 The second main clutch lever 129 is arranged inside the machine body from the vehicle height adjusting lever 128.

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

Then, at the outer end of the rear step 127, the vehicle height adjusting lever guide 130 having the second vehicle height adjusting lever 128 housed in the frame and having a display scale indicating a guideline for the vehicle height is inclined upward toward the front side of the machine body. The vehicle height adjusting lever guide 130 is provided in a posture, and a main clutch lever guide 131 for accommodating the second main clutch lever 129 in the frame is provided in an upward inclined posture toward the front side of the vehicle body on the inside of the vehicle height adjusting lever guide 130.

The second vehicle height adjusting lever 128 has a larger amount of protrusion toward the front side of the machine than the second main clutch lever 129.

Further, the second vehicle height adjusting lever 128 and the second main clutch lever 129 can rotate the base side to the mounting support plate 105 on the left and right sides of the machine body (right side of the machine body) and the front and rear beam frames 106f and 106r. If it is to be mounted, it is not necessary to separately provide a 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 left and right sides of the fuselage, that is, on the left side of the fuselage with respect to the control unit 126 on the vehicle body, exposed on the upper surface of the rear step 127.

The vehicle height adjusting lever guide 130 and the main clutch lever guide 131 are arranged with a certain vertical interval S between the upper surface of the side step 118. The above-mentioned vertical spacing S is set to such an extent that a space is secured even if the worker's feet are inserted (eg, about 15 to 20 cm).

With the above configuration, the worker 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. , Work efficiency is improved and seedling planting accuracy is improved.

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

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

Further, by projecting the second vehicle height adjusting lever 128 toward the front side of the machine body from the second main clutch lever 129, the arm is greatly extended when operating the second vehicle height adjusting lever 128 on the side far from the work seat 46. There is no need, and the labor of the worker is reduced.

By providing the left and right side clutch pedals 132L and 132R in the rear step 127, which of the side clutch pedals 132L and 132R is used when the traveling direction of the traveling vehicle body 40 is about to deviate from the straight traveling direction with respect to the ridge. By temporarily disengaging the corresponding side clutch by operating the pedal, the course of the traveling vehicle body 40 can be corrected, and the seedling planting position is prevented from meandering in the left-right direction.

In addition, the vehicle height adjustment lever guide 130 and the main clutch lever guide 131, that is, the work of boarding the work seat 46 by forming a vertical space S between the upper and lower parts of the vehicle body upper control unit 126 and the side step 118. The movement of the person's legs is not hindered, and the worker can get on the control seat 46 in a comfortable posture, which reduces labor.

Spare seedling frames 50 capable of accommodating seedlings to be supplied to the seedling supply device 43 are provided at positions above the transmission axle of the traveling wheel 44 on both the left and right sides of the work seat 46 when viewed from the side of the machine.

The spare seedling frame 50 is provided with a support stay 52 on the upper part of the seedling support column 51 projecting to the outside of the traveling vehicle body 40, and the support stay 52 can be switched between a rotating state and a non-rotating state. An arm 53 is provided, and the seedling frame frames 54 and 54 in the vertical direction are arranged at intervals on the seedling mounting rotation arm 53, and the seedlings for replenishment are housed on the same surface of the seedling frame frames 54 and 54. It is configured by mounting one side end of a mounting table 55 on which a container such as a seedling box or a seedling tray is placed.

Only one mounting table 55 may be provided in the vertical direction, but a plurality of mounting tables 55 may be arranged at intervals in the vertical direction that do not hinder the removal of the container.

The spare seedling frame 50 having the above configuration is provided on each of the left and right sides of the traveling vehicle body 40, and the seedling mounting rotation arm 53 is rotated on the support stay 52 according to the situation.

For example, when planting seedlings, the longitudinal direction of the mounting table 55 is directed toward the front and rear of the machine, so that the container for seedlings can be taken out from the mounting table 55 and the empty container can be easily returned to improve work efficiency. Can be improved.

Further, since the mounting table 55 is located on both the left and right sides of the traveling vehicle body 40 at this position, it becomes easier for the operator to grasp the end portion of the boardable portion of the traveling vehicle body 40, and the foot protrudes from the traveling vehicle body 40 and the posture. Is prevented from breaking.

Further, when the worker gets on and off the traveling vehicle body 40, the seedling rotation arm 53 is rotated by about 90 degrees.

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

Further, the operator can get on and off from the front side of the traveling vehicle body 40, but the seedling frame frames 54 and 54 are located on the front side of the machine body by rotating the seedling mounting rotation arm 53, and the mounting table 55 is rear of the machine body. When the state is located on the side, the worker can use the seedling frame frames 54 and 54 as handrails, so that the traveling vehicle body 40 can get on and off smoothly.

Further, when loading or unloading the seedling container on the mounting table 55, there is no member that hinders the loading and unloading of the container from the rear side of the machine body, so that the work efficiency is improved.

The work seat 46 is attached to the traveling vehicle body 40 in a U-shape in front view or rear view, and is a portion of the seat frame 49 straddling the machine cover 48 covering the upper part of the engine 41 or the like in the left-right direction of the machine. Attach it to the top of the. The bases of the left and right seat stays 49a facing the front side of the machine body are mounted on the upper part of the seat frame 49, and the work seat 46 is centered on the left-right rotation fulcrum on the base side of the left and right seat stays 49a. It is mounted so that it can rotate in the front-back direction.

As a result, the work seat 46 can be placed in a posture in which the seedling supply device 43 is in contact with the vicinity of the front end portion of the machine body, so that it is possible to prevent sand and rainwater from adhering to the seated portion of the worker when the work is interrupted.

When transplanting seedlings to a field, so-called irrigation work may be performed in which water is supplied to the vicinity of the planted seedlings in consideration of conditions such as the soil quality of the field, the surrounding water environment, and the weather before the work.

As shown in FIGS. 1 to 4, the transplanting machine of this case is provided with water tank holders 601 for loading the water tanks 600 in the left and right traveling transmission cases 38 and 38, respectively.

The water tank holder 601 is mounted via the transmission axle 12 of the traveling wheel 44. Specifically, as shown in FIGS. 26 to 28, a water tank frame 602 having a shape that covers the outer periphery of the transmission axle 12 and protrudes upward is detachably attached. A collar is provided between the bearing and the left and right sides of the water tank frame 602 so that the transmission axle 12 can drive and rotate the traveling wheel 44 without rotating the water tank frame 602 together.

Then, in the water tank frame 602, the receiving shaft 606 is provided so as to project outward from the machine body above the position where it is mounted on the transmission axle 12, and the front and rear water tanks of the water tank 600 are supported on the upper part of the receiving shaft 600. Place the board 603. However, it shall not be connected. The front side and the rear side of the front and rear water tank support plate 603 are respectively bent upward to receive the water tank 600.

Further, on the upper surface of the front and rear water tank support plates 603, left and right water tank support plates 607 having a longitudinal direction in the left-right direction are provided by welding or bolting, and both left and right sides are bent upward.

Further, the vicinity of the upper end portion of the upper protruding portion inside the machine body of the left and right water tank support plates 607 is rotatably connected to the upper portion of the water tank frame 602. That is, the left and right water tank support plates 607 and the front and rear water tank support plates 603 are suspended from the water tank frame 602 and supported by the receiving shaft 606 from below.

As a result, even if the water tank 600 is overloaded, it is not easily damaged.

Then, a frame-shaped water tank guard that surrounds and supports the outer periphery of the water tank 600 on both the left and right upper protruding portions of the left and right water tank support plates 607 and the upper front and rear protruding portions of the front and rear water tank support plates 603. 608 is attached.

When the above water tank guard 608 is provided near the upper ends of the upper protruding portions on both the left and right sides of the left and right water tank support plates 607 and the upper protruding portions of both the front and rear water tank support plates 603, the water tank 600 may fall off. Although it can be surely prevented, the water stored in the water tank 600 needs to be replenished, so that the water tank 600 needs to be attached and detached periodically. At this time, if the vertical position of the water tank guard 608 is the same everywhere, the operator needs to lift the water tank 600 to a height higher than the vertical position of the water tank guard 608 when attaching / detaching the water tank 600. It requires a lot of labor.

In order to reduce this labor, the water tank guard 608 is located near the upper end of the upper protruding portion inside the fuselage of the left and right water tank support plates 607, and more than the upper end of both the front and rear upper protruding portions of the front and rear water tank support plates 603. The left and right water tank support plates 607 are connected and mounted at positions slightly below and slightly above the upper and lower center of the upper protruding portion on the outside of the machine body. In other words, the water tank guard 608 is mounted in an inclined posture toward the lower outside of the machine body.

As a result, the vertical position of the water tank guard 608 on the outside of the machine, which is easy for workers to approach, is lowered, and the water tank can be avoided from the diagonally front or diagonal rear of the left and right water tank support plates 607. Since the water tank 600 can be attached and detached, the operator can reduce the lifting distance when attaching and detaching the water tank 600, so that the labor of the operator is reduced.

The transmission axle 12 that supports and drives and rotates the traveling wheel 44 to which the above water tank frame 602 is mounted has a structure having a correspondingly high strength, but it receives the load of the water tank 600 filled with water. Since there is a limit to the strength of the shaft 606 and the like, it is desirable to have a configuration in which the load can be distributed.

Since there is a traveling transmission case 38 having a strong structure inside the body of the transmission axle 12, a load receiving plate 610 is provided on the rear side of the body of the traveling transmission case 38 so as to project upward. If the positions of the upper ends of the load receiving plate 610 and the water tank frame 602 are substantially the same in the vertical position, unnecessary upward protrusion does not occur.

The mounting portion of the load receiving plate 610 is a long hole 610a, and the loading angle of the water tank 600 is changed according to the front-rear tilting posture of the traveling vehicle body 40 to stabilize the weight balance. As a result, it is possible to prevent the seedling planting angle from being disturbed due to the traveling vehicle body tilting back and forth, and to improve the planting accuracy.

Then, the load receiving plate 610 and the vicinity of the upper end portion of the water tank frame 602 are connected by a U-shaped load receiving connecting frame 611 in a plan view. The load receiving connection frame 611 is arranged so as to straddle the traveling transmission case 38 and the upper portion of the traveling wheel 44 on the rear side.

Although the load receiving plate 610 is mounted inside the machine body in FIGS. 26 to 28, the traveling wheel 44 is mounted inside the traveling transmission case 38, outside, or if possible, the tread. It may be possible to attach it to the outside of the machine in order to cope with the case of adjusting. Therefore, mounting portions for mounting the load receiving plates 610 are formed on both the left and right sides of the traveling transmission case 38 on the rear side of the fire and on the upper side.

At this time, the load-bearing connecting frame 611 has a configuration in which a plurality of pipes are combined and one of the left and right is moved in the left-right direction of the machine to have a left-right width that matches the left-right distance between the load-bearing plate 610 and the water tank frame 602. However, in order to receive the load more reliably, it is more desirable to have a configuration in which one pipe having a different left-right width is replaced with another load-bearing connecting frame 611 that has been bent.

In the above configuration, both the water tank frame 602 and the load receiving plate 610 are removable, so when moving the aircraft by truck or the like, the water tank stay 601 is removed to make the left and right width of the aircraft compact. Can be done easily.

In the above, by lowering the vertical position on the outside of the body of the water tank guard 608, it is easy to take out the water tank 600 from the diagonally front or diagonally rear of the outside of the body of the water tank stay 601 and prevent the water tank 600 from falling off. ing. From here, another configuration example is shown in which the height at which the water tank 600 can be lifted upward at the time of attachment / detachment can be lowered with less effort.

As shown in FIG. 29, the L-shaped water tank guard 612, which is L-shaped in plan view, is formed on the upper protruding portion inside the machine body of the left and right water tank support plates 607 and the upward protruding part on the rear side of the front and rear water tank support plates 603. To concatenate.

This L-shaped water tank guard 612 receives the inside and the rear of the water tank 600, but does not receive the outside and the front of the body. Therefore, when the water tank 600 is attached or detached, the height to which the water tank stay 601 is attached is high. It is sufficient to lift the water tank 600 slightly above the water tank 600, and the labor can be reduced.

At this time, in order to prevent the water tank 600 from falling off from the outside or the front side of the machine during work or the like, the L-shaped water tank guard 612 has some flexibility such as rubber or a chain on the rear side and the outside of the machine. The base of the guard belt 613 composed of the members is attached. A mounting hook 614 is provided on the end side of the guard belt 613, and the mounting hook 614 is hooked on the hook receiving portion 615 provided on the front side and inside of the L-shaped water tank guard 612, so that the guard belt 613 can be attached to the water tank 600. The structure shall be such that it receives the front side of the hook and the outside of the fuselage and prevents it from falling off.

It is preferable that a plurality of hook receiving portions 615 are provided in the front-rear direction or can be moved to an arbitrary position in the front-rear direction so that the hook receiving portions 615 can be adjusted according to the left-right width and the front-back length of the water tank 600.

The water for irrigation stored in the water tank 600 is pumped up by the operation of the irrigation pump 700 provided at the bottom of the traveling vehicle body 40 and near the center of the front and rear of the aircraft, and at the positions where the planting hoppers 20a and 20b plant the seedlings. It is discharged. The irrigation pumps 700 are arranged according to the number of planting hoppers 20a and 20b, and are arranged on the left and right at intervals with respect to the left and right center portions of the traveling vehicle body 40.

A hose may be attached to the irrigation pump 700 to discharge water from the water tank 600 via the irrigation pump 700 and the water from the watering nozzle 710. However, due to the operation of the gear pump 800 of the irrigation pump 700, the water is discharged in the discharge direction. A part of the pumped water may be returned to the water tank 600 side. As a result, the amount of irrigation supplied to the field at one time is reduced, and there is a risk that the growth of seedlings may be delayed due to lack of water, or the quality of the harvested product may be deteriorated due to poor growth.

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

More specifically, as shown in FIG. 9, first, the water absorption check valve 724 and the drainage check valve 725 facing in the direction allowing water to be sent from the front side to the rear side of the machine are arranged one above the other, and the outer end of the side step 118 of the machine. Attach it to the bottom of the part. Then, one side of the water absorption hose 721 is allowed to enter the water tank 600, the other side is connected to the inlet of the water absorption check valve 724, that is, the front side of the machine body, and one side of the drainage hose 722 is the outlet of the drainage check valve 725. That is, it is connected to the rear side of the machine body, and the other side is connected to the drainage nozzle 710.

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

The drainage nozzle 710 may supply water directly to the field, but irrigation is poured into the inside from the upper openings of the planting hoppers 20a and 20b with a certain amount of water force and adheres to the inside of the planting hoppers 20a and 20b. It may be configured to be used for removing the muddy soil.

This eliminates the need for a scraper that enters the inside while the planting hoppers 20a and 20b are open and removes mud, so that the number of parts can be reduced.

If the scraper draws a predetermined trajectory in conjunction with the ascent and descent of the planting hoppers 20a and 20b, the number of parts of the mechanism for ascending and descending on the predetermined trajectory can be reduced, so that the number of parts can be significantly reduced and the machine structure can be configured. Is simplified.

Further, 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 the mud, and the outflow of nutrients in the field is reduced.

With the above configuration, the check valve 720 is arranged in the space on the left and right outside of the machine, so when a problem such as clogging occurs, it is easy to investigate the cause and perform maintenance work, and it is possible to reduce labor and work time. ..

Further, by arranging the water absorption check valve 724 and the drainage check valve 725 to have the same water supply direction, it is difficult to make a mistake in the mounting direction during the assembly work after disassembly, and the work efficiency is improved.

Further, 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 body of the irrigation pump 700, the water absorption hose 721, the drain hose 722, and the first relay hose are arranged. The bending of the 723a, the second relay hose 723b, and the third relay hose 723c can be minimized, and the arrangement can be arranged so as not to overlap easily.

If the water absorption check valve 724 and the drainage check valve 725 are transparent cylinders, and the internal spring and the ball for preventing backflow can be confirmed from the outside, the water supply direction can be visually recognized and mounting mistakes are less likely to occur.

As shown in FIG. 24, the gear pump 800 has a joint 802 mounted on the input shaft 801 and the joint 802 and the engine output shaft 803 for transmitting the driving force of the engine 41 are inserted into the shaft hole of the irrigation input gear 804. Insert each. In other words, the irrigation input gear 804 becomes a coupling member that connects the input shaft 801 and the engine output shaft 803. The irrigation input gear 804 is mounted via a bearing 805, and the engine output shaft is attached to the outer periphery of the portion of the engine output shaft 803 that does not enter the shaft hole of the irrigation input gear 804 due to contact with contaminants such as earth and sand and weeds. A collar 806 is provided to protect the 803.

Then, in order to rotate the input shaft 801 and the engine output shaft 803 in synchronization with each other, at least the portion of the engine output shaft 803 that enters the shaft hole of the irrigation input gear 804 is shaped so that the diameter is smaller than the diameter of the shaft hole. Attach the key 807 to the small diameter part. On the other hand, a key groove for inserting the key 807 is formed in the joint 802, and one end of the key 807 protruding beyond the end of the small diameter portion of the engine output shaft 803 is inserted into the key groove.

As a result, the power of the engine 41 is reliably transmitted to the gear pump 800, so that a certain amount of water is supplied by the irrigation pump 700, and water can be reliably supplied to the planted seedlings.

In the small diameter portion of the engine output shaft 803, a part of the shaft is biased to have a small diameter, and one key 807 may be provided. However, it is necessary to widen the width of the key 807 by that amount. The keyway of the joint 802 must also be formed in a biased manner, resulting in a structure in which the strength is biased.

Instead of the above configuration, as shown in FIG. 25, the small diameter portion of the engine output shaft 803 is formed by evenly cutting the shaft diameter, and a pair of keys 807 are provided at positions symmetrical to the axis center of the engine output shaft 803. May be good. At that time, key grooves are also formed in the joint 802 at positions symmetrical with respect to the axial center of the joint 802, and the keys 807 are inserted into and connected to these key grooves 802a.

As a result, the strength is less likely to be biased, so that the durability can be improved.

The transplanting machine according to the present invention can be applied to improve the ease of getting on and off the transplanting machine for planting seedlings, and has high industrial applicability.

12 Transmission axle (axle)
20a Planting hopper (planting device)
20b Planting hopper (planting device)
38 Traveling transmission case 40 Traveling vehicle body 44 Traveling wheels (traveling device)
600 Water tank 601 Water tank stay 602 Water tank frame 603 Front and rear water tank support plate (water tank support member)
606 Receiving shaft (reception member)
607 Left and right water tank support plate (water tank support member)
608 Water tank guard (guard body)
610 Load-bearing plate 612 Load-bearing connection frame (connection frame)

Claims (5)

In a transplanting machine provided with a planting device (20a, 20b) for planting seedlings in a field on a traveling vehicle body (40) and a control member (404) for maneuvering such as turning at the rear portion of the traveling vehicle body (40).
A transplant machine characterized in that an auxiliary step (412) is provided below the control member (404) to assist in lifting the front portion of the traveling vehicle body (40) by stepping on it during turning. The control member (404) is provided with a step frame (411) in an inclined posture toward the rear side of the machine body.
The transplant machine according to claim 1, wherein the step frame (411) is provided with one or more of the auxiliary steps (412). A transmission case (26) for operating the planting device (20a, 20b) is provided, and a connecting plate (400) is provided in the transmission case (26).
2. The second aspect of the present invention is that the step frame (411) is provided with a step reinforcing member (413), and the step reinforcing member (413) and the connecting plate (400) are connected by a reinforcing rod (414). The transplant machine described in. The auxiliary step (412) is mounted on the step frame (411) so as to be vertically movable.
The traveling vehicle body (40) is provided with a traveling transmission case (38, 38) that raises and lowers the vehicle height when rotated up and down, and a step cable (411) is provided between the traveling transmission case (38, 38) and the step frame (411). 417)
When the vehicle height of the traveling vehicle body (40) becomes equal to or higher than a predetermined height due to the rotation of the traveling transmission case (38), the step frame (411) is lowered to a position where the step frame (411) can be stepped on by the step cable (417). The transplant machine according to claim 2 or 3, characterized in that. The auxiliary step (412) is mounted on the step frame (411) so as to be vertically movable.
An auxiliary suppression ring (423) for leveling the soil around the seedlings planted by the planting device (20a, 20b) is provided below the auxiliary step (412), and the auxiliary suppression ring (423) comes into contact with the field scene. The transplant machine according to claim 2 or 3, wherein a telescopic member (426) for moving the auxiliary step (412) up and down depending on the state is provided.

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