JP2009082006A - Seedling planter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seedling planter that easily carries out operations, even if rainwater is collected on a mulchi film. <P>SOLUTION: In the seedling planter in which a seedling planting body 20, moving vertically on a fixed operation locus by a vertical movement mechanism 21 and plants seedlings on a field is arranged and soil covering press wheels 37 are installed behind the seedling planting body 20, the seedling planter is equipped with a plurality of needle-like projections 37a on the grounded surfaces of the soil-covering press wheels 37. Since the seedling planter is equipped with a plurality of the needle-like projections 37a on the grounded surfaces of the soil covering press wheels 37, even if a mulch film is laid on the surface of a field, a plurality of holes are bored through the mulchi film is easily moved to a field and water on the mulchi film is removed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention belongs to the technical field of a seedling planting machine in which seedlings are planted by a seedling planting body that operates in accordance with the advance of the body.

Conventionally, when a seedling planting machine is run in a field where multifilm is laid, seedling planting work is carried out while contacting the multifilm so that the multifilm does not loosen or break due to the rotation of the wheels. There is a machine.
Japanese Patent Laid-Open No. 2002-45012

When working with the seedling planting machine described in Patent Document 1, rainwater may accumulate on the multi-film, making it difficult to work.
Then, the subject of this invention is providing the seedling planting machine which can work easily even if rainwater accumulates on a multi film.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the invention according to claim 1 is a seedling planting machine in which seedling planting bodies (20) for planting seedlings in a field are arranged, and a soil covering pressure reducing wheel (37) is provided behind the seedling planting body (20). This is a seedling planting machine in which a plurality of needle-like protrusions (37a) are provided on the ground contact surface of the pressure-reducing wheel (37).

  The invention described in claim 2 moves up and down in a seedling planting machine in which seedling planting bodies (20) for planting seedlings in a field are arranged and a covering soil pressure ring (37) is provided behind the seedling planting body (20). The seedling transplanter is provided with a grooving tool (95) for making a drainage groove in the left-right direction by pressing the lower part against the ground.

  According to the first aspect of the present invention, in the seedling transplanter provided with the soil covering pressure wheel (37), since the plurality of needle-like protrusions (37a) are provided on the ground contact surface of the soil covering pressure wheel (37), Even if the multi-film is laid on the field, a plurality of needle-shaped protrusions (37a) can be used to make a plurality of holes in the multi-film, so that the water on the multi-film can easily be transferred to the field. Moisture can be removed.

  According to invention of Claim 2, by making a groove | channel on a farm field by the grooved bar (95) (FIG. 3) which moves up and down, water becomes easy to flow through a groove | channel and drainage property becomes favorable.

  A seedling transplanter 1 according to an embodiment of the present invention will be described below. FIG. 1 shows an overall side view of the seedling transplanter 1, and FIG. 2 shows an overall plan view of the seedling transplanter 1. In the following description, the side on which the steering handle 2 is disposed is the rear, and the opposite side, that is, the side on which the engine 3 is disposed is the front. The right hand side is set to the right and the left hand side is set to the left toward the front side of the aircraft.

  The seedling transplanter 1 includes a traveling vehicle body 4 that allows the aircraft to travel forward, a steering handle 2 for walking control provided at the rear of the traveling vehicle body 4, a seedling planting device 5 that plants seedlings in a farm field, A seedling supply device 6 for supplying seedlings to the seedling planting device 5 is provided.

  In the illustrated example, the traveling vehicle body 4 is rotatably supported in front of the engine 3, a rear wheel 7 that is a pair of left and right drive wheels that are driven to rotate by transmission of the power of the engine 3, and the rear wheel 7. A pair of left and right front wheels 8 are provided.

  A mission case 9 is disposed on the rear side of the engine 3, and the mission case 9 has a case portion extending from the left side portion to the left side of the engine 3, and this is connected to the left side portion of the engine 3. The output shaft of the engine 3 enters the case portion and the power is transmitted to the transmission mechanism in the transmission case 9. The left and right side portions of the mission case 9 are rotatably attached to the front portions of the left and right transmission case 10 for traveling.

  Specifically, an axle case 11 (FIG. 2) provided so as to be rotatable integrally with the transmission case 10 is provided on the inner side of the front body of the transmission case 10 for traveling. The axle case 11 is attached to the transmission case 9. The left and right side transmission cases 10 are attached to the left and right sides of the transmission case 9 so as to be rotatable. The rear wheel 7 is attached to a drive shaft 12 that protrudes to the rear side of the transmission case 10 for traveling. The tip of the wheel drive shaft extending from the transmission case 9 to the left and right outer sides enters the rotational axis center position of the front part of the transmission case 10 and passes through the traveling part system transmission transmission part in the transmission case 9. The driving power is transmitted to the transmission mechanism in the transmission case 10. The driving power is transmitted to the drive shaft 12 on the rear end side of the transmission case 10 via a transmission mechanism in the transmission case 10 so that the rear wheel 7 is driven to rotate.

  The left and right rear wheels 7 can be disconnected by left and right side clutches (not shown) provided in the mission case 9. Therefore, when turning the airframe, the left and right rear wheels 7 on the inside of the turn can be turned in a non-driven state by the side clutch so as to turn smoothly.

  The traveling transmission case 10 is connected to driving means that rotates up and down so as to move the rear wheel 7 up and down with the front side of the transmission case 10 as a rotation fulcrum. Specifically, an upwardly extending arm 13 is integrally attached to the attachment portion of the transmission case 10 to the transmission case 9, and the lifting hydraulic cylinder A (not shown) fixed to the transmission case 9. It is connected with the left and right sides of the connecting body attached to the tip of the piston rod. The left and right one side (right side) is connected by a rod, and the other side (left side) is connected by a left / right tilt control hydraulic cylinder B (not shown) that can be expanded and contracted according to the tilt of the fuselage.

  When the lifting hydraulic cylinder A is actuated and the piston rod protrudes rearward of the machine body, the left and right arms 13 are rotated forward, and accordingly, the transmission case 10 is rotated downward to raise the machine body. On the contrary, when the piston rod of the lifting hydraulic cylinder A moves forward and retracts into the cylinder, the left and right arms 13 rotate forward, and accordingly the transmission case 10 rotates upward, The aircraft descends. The lifting hydraulic cylinder A is actuated by a sensor 14 that comes in contact with the saddle surface and operates in accordance with fluctuations in the vertical distance between the airframe and the saddle surface. The operation of the sensor 14 is to detect the height of the heel surface relative to the airframe, and the lifting hydraulic cylinder A is operated based on the detection operation of the sensor 14 so that the airframe is at a set height with respect to the height of the heel surface. It is composed.

  Further, the lifting hydraulic cylinder A is operated so as to manually raise or lower the machine body by manual operation of the planting / elevating operation tool 15 disposed in the vicinity of the steering handle 2. The planting / lifting operation tool 15 is configured to be able to turn on and off the driving of the seedling planting device 5 and the seedling supply device 6.

  Further, when the left / right tilt control hydraulic cylinder B is extended / contracted, the left arm 13 connected to the left / right tilt control hydraulic cylinder B is rotated, and only the left rear wheel 7 is moved up and down, thereby moving the body left and right. Tilt to. The left / right tilt control hydraulic cylinder B is configured to operate the airframe parallel to the left / right tilt of the saddle surface based on the detection result of a left / right tilt sensor C that detects the left / right tilt of the saddle surface.

  The left and right front wheels 8 are attached to the left and right sides of a horizontal frame 16 that is pivotally mounted around the axial center in the front-rear direction at the left and right center position below the engine 3, and the vertical frames 17 that are vertically long are attached to the side of the lower end. It is rotatably attached to an axle 18 fixed to the wheel. Therefore, the left and right front wheels 8 are capable of rolling around the longitudinal center of the left and right center of the aircraft. A 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 8 can be adjusted.

  The steering handle 2 is provided at the rear part of the airframe and is located on the rear side of the airframe from the drive shaft 12 of the rear wheel 7. Specifically, it is attached to the rear end portion of the body frame 19 with the front end portion fixed to the mission case 9. The body frame 19 extends rearward at the left and right center of the body, and extends obliquely rearward and upward from the front and rear intermediate portions. The steering handle 2 extends rearward from the rear end portion of the body frame 19 to the left and right, and each rear end portion serves as a grip portion 2 a of the steering handle 2. The left and right grip portions 2a of the steering handle 2 can be adjusted to an appropriate height so that the operator can easily grip the grip portion 2a with his / her hand. In the illustrated example, the grip portion 2a is divided into left and right parts, but the left and right rear end portions of the steering handle 2 may be connected to each other on the left and right sides, and the connecting portion may be used as the grip portion.

  Further, the traveling vehicle body 4 is configured such that the traveling drive unit that is grounded and driven to rotate is configured as a four-wheel traveling drive unit having front and rear wheels, as shown in FIG. A configuration in which both wheels are parallel crawler traveling devices 81, 71, a configuration in which the front wheel portion is a sled traveling device 83 as shown in FIG. 4, and a rear wheel portion is a crawler traveling device 72 in a triangular shape in side view, As shown in FIG. 5, the front wheel portion may be a tire-type wheel 8 and the rear wheel portion may be a crawler traveling device 72 in a triangular shape in a side view.

  As shown in FIG. 3, a parallel crawler traveling device 81 that is driven by a pair of front and rear sprockets is attached to the front wheel portion instead of the tire-type wheels 8, and the rear wheel portion is driven by a pair of front and rear sprockets instead of the tire-type wheels 7. The parallel crawler traveling device 71 is attached, and the crawlers 71 and 81 are provided with mudguard covers 71a and 81a and steps 81a1 and 71a1 on the covers 81a and 71a, respectively.

  If the chain drive shaft 12 in the chain case 10 is disposed in the middle part of the pair of front and rear sprockets of the parallel crawler 71 of the rear wheel part shown in FIG. 3, the crawler traveling device 71 and the tire wheel 7 can be easily replaced. The crawler traveling device 71 and the tire wheel 8 can be easily replaced.

  Further, as shown by a two-dot chain line in FIG. 3, the crawler traveling devices 81 and 71 can be used with their longitudinal portions standing in the vertical direction. In order to stand the longitudinal portions of the crawler traveling devices 81, 71 in the vertical direction, the rotation support shafts 81b, 71b of the front and rear crawler travel devices 81, 71 are installed in the machine body, and the rotation support shafts 81b, 71b. Is provided in the vicinity of the upper side of the crawler traveling devices 81 and 71.

In this way, when the longitudinal portions of the crawler traveling devices 81 and 71 are set up in the vertical direction, the ground contact width of the crawler traveling devices 81 and 71 is relatively small, so that the straight traveling performance is excellent and the weather is good. The aircraft will have excellent straightness. As a result, when the longitudinal portions of the crawler traveling devices 81 and 71 are set up in the vertical direction, the road traveling performance is good.
At this time, by providing steps 81a1 and 71a1 on the crawler covers 81a and 71a of the crawler traveling devices 81 and 71, respectively, a scaffold can be obtained.

  Further, as shown in FIG. 4, a sled 83 is attached to the front wheel portion of the seedling transplanter according to another embodiment of the present invention in place of the tire-type wheel 8, and the angle of attack of the sled 83 can be changed. . Further, a triangular crawler traveling device 72 in a side view is attached to the rear wheel portion instead of the tire wheel 7. The crawler traveling device 72 is provided with a mudguard cover 72a, and a step 72a1 is attached to the cover 72a so that a person can easily get on and off using the step 72a1. Although not shown, a triangular crawler traveling device 72 is attached to the front wheel portion instead of the tire-type wheel 8, a mudguard cover is provided on the crawler traveling device 72, and a step is provided on the cover. Then, it becomes easy for a person to get on and off from the front side using this step.

  In the seedling transplanter of one embodiment of the present invention shown in FIG. 5, the front wheel portion can be a tire-type wheel 8 and the rear wheel portion can be a triangular crawler traveling device 72 in a side view. In this case, the size of each side of the triangular crawler traveling device 72 is different so that the size of the ground contact portion of the triangular crawler traveling device 72 is large, medium, and small. For example, when the ground is muddy, as shown in FIG. 5 (a), the major side is used as a grounding part, and during normal work, the middle side of FIG. 5 (b) is used as a grounding part. At that time, the small side of FIG. The drive shaft 12 provided in the chain case 10 is located at the center of gravity of the triangular crawler traveling device 72.

  As the tire-type wheels 8 and 7 provided on the front wheel portion or the rear wheel portion of the above-mentioned various seedling transplanters, a double-structure crawler type tire-type wheels 90 and 90 shown in the front view of FIG. The adjacent tire-type wheels 90, 90 can be manually changed from each other so that the width of the tire-type wheels 90, 90 can be changed as a whole.

  Further, as shown in FIG. 6, the triangular crawler traveling device 72 in the rear wheel portion includes a drive wheel 72b and driven wheels 72c and 72d, and connects two sprockets (driven wheels) 72c and 72d on the ground contact portion side. The distance between the extendable double-cylindrical connecting arms 73 can be adjusted by an adjuster 74 so that the grounding range of the crawler traveling device 72 can be changed.

Further, the crawler traveling device 72 can change the front / rear inclination angle by the following configuration so as to be able to cope with the state of the field.
A first support piece 36a integral with a rotating shaft 10a (rotation center of the transmission case 10) at the front end of the transmission case 10 and a second support piece 36b erected on the drive shaft 12 provided at the rear of the transmission case 10. Are connected by a link 36c, and the length between the first support piece 36a and the second support piece 36b can be changed by an adjuster 36d of the link 36c. The second support piece 36b is rotatable about the drive shaft 12 integrally with the crawler frame 75 that connects the drive wheel 72b and the driven wheel 72c.

  Accordingly, when the distance between the links 36c between the first support piece 36a and the second support piece 36b is changed by the adjuster 36d, the second support piece 36b swings around the drive shaft 12. As a result, the inclination angle of the crawler traveling device 72 with respect to the field scene in the front-rear direction is changed.

  The seedling planting device 5 has a beak-shaped seedling planting body 20 whose tip is directed downward, and a seedling planting body at a position where the lower end of the seedling planting body 20 is above the field scene and a position below the field scene. The vertical movement mechanism 21 that moves the vertical movement 20, the lower end of the beak-like seedling planting body 20 is closed, the closed state that accepts the seedling from above and accommodates the seedling inside, and the lower end of the seedling planting body 20 is left and right And an open / close mechanism that opens and closes the seedling planting body 20 in an open state that allows the seedlings that are opened to the inside to be released downward.

  Then, the seedling supply device 6 receives a seedling from above and stores a plurality of seedling containers 22 that stores the seedlings inside, and a moving mechanism that moves the seedling container 22 so as to pass above the seedling planting body 20. (Sprocket) 23 (FIG. 2) and a seedling drop supply mechanism that opens the bottom of the seedling container 22 at a position above the seedling planting body 20 to drop the seedling housed inside and supplies the seedling to the seedling planting body 20 An opening mechanism 24 (FIG. 9) is provided.

  The seedling planting device 5 has a configuration of a plurality of seedlings in which a plurality of seedling planting bodies 20 are arranged side by side at set intervals that are substantially equidistant from side to side. In this example, the seedling planting body 20 has a four-row planting structure in which four seedling planting bodies 20 are arranged side by side at set intervals.

  The four seedling planting bodies 20 are mounted on two vertical movement mechanisms 21 provided on both left and right sides of the transmission case 26 transmitted from the mission case 9. The transmission case 26 is fixed to an upper portion of an attachment member 25 whose lower portion is fixed to the body frame 19. The vertical movement mechanism 21 is provided with upper and lower lifting links that are attached to the transmission case 26 so that the front part is pivotable up and down and the rear part is connected to the seedling planting body 20. The upper and lower lifting links are moved up and down by power from the transmission case 26 by a separately provided drive mechanism, and the left and right seedling planting bodies 20 are moved up and down. And the lower end part of the seedling planting body 20 is located above the farm scene in the raised position, and the lower end part of the seedling planting body 20 is located below the farm scene in the lowered position. The opening / closing mechanism of the seedling planting body 20 is operated by the power from the transmission case 26, and in conjunction with the operation of the vertical movement mechanism 21, when the seedling planting body 20 reaches the lowered lower end position, the lower side of the seedling planting body 20 Is opened to the left and right and opened downward, and when the seedling planting body 20 reaches the raised upper end position, the lower side of the seedling planting body 20 is closed and closed.

  Among the four seedling planting bodies 20, the left and right inner seedling planting bodies 20 are located on the rear side of the left and right outer seedling planting bodies 20. Further, the left and right vertical movement mechanisms 21 are configured to operate with a phase difference of 180 degrees, so that the right and left outer seedling planting bodies 20 and the left and right other inner seedling planting bodies 20 are the same front and rear in the field. Planting seedlings in the position. Therefore, the seedling planting machine 1 is configured to plant four seedlings in a zigzag pattern.

  The seedling supply device 6 has a cylindrical body that opens up and down and a bottom lid 27 (FIG. 9) that opens and closes an opening on the lower side of the cylindrical body. And a moving mechanism 23 for rotating the seedling container 22 in a counterclockwise manner along a long oval loop-like locus in the left and right sides in plan view of the body while passing through the vicinity of the upper part of the seedling planting body 20, and the seedling container In this configuration, an opening mechanism 24 that opens the bottom lid 27 of the body 22 at a position above the seedling planting body 20 is provided.

  The seedling supply device 6 has a cylindrical outer peripheral portion formed on the outer periphery of the seedling container 22, and has an engaging portion (round hole) that engages the cylindrical outer peripheral portion so as to be rotatable from the outside. A plurality of connecting bodies for connecting the containers 22 are provided, the engaging portions of the connecting bodies are rotatably engaged with the cylindrical outer periphery of the seedling container 22, and the adjacent seedling containers are used with the cylindrical outer periphery as a rotation axis. A plurality of seedling containers 22 are connected to each other as a state where 22 is rotatably connected. That is, it is the structure connected like an endless chain by the seedling container 22 and the connection body. Thereby, since the space | interval with the adjacent seedling container 22 does not change in the part 28 (FIG. 2) which moves linearly, and the part 29 which moves circularly, the seedling container 22 is planted from the seedling container 22. The seedling container 22 is less likely to be displaced with respect to the seedling planting body 20 at the location where the seedling is supplied to the body 20, and the seedling supply is properly performed, so that an appropriate seedling can be transplanted. After setting the number of seedling containers 22 and the range of rotation, the upper opening of the seedling container 22 can be formed as wide as possible, and the seedling supply operation to the seedling container 22 is achieved while making the body compact. Can be performed as easily as possible.

  The moving mechanism 23 of the seedling supply device 6 is engaged with and wound around an arc-shaped cutout portion on the outer periphery of a sprocket 23 as a moving mechanism having a seedling container 22 connected to each other like an endless chain. Each sprocket 23 is driven and rotated by the power extracted from the transmission case 26 to rotate each seedling container 22 around.

  The orbital movement path around which the seedling container 22 circulates includes a linear part 28 extending in the left-right direction in plan view and an arcuate part 29 that bends in an arc from the linear part 28 to the front side or the rear side by the sprocket 23. It is in the shape of an ellipse and is arranged on the inner side of the body from the left and right rear wheels 7. Further, the seedling planting body 20 is arranged on the rear side of the axle 12 position of the rear wheel 7.

As shown in FIG. 9, the opening mechanism 24 of the seedling supply device 6 is provided with a support body 30 that supports the bottom cover 27 from below so that the bottom cover 27 does not rotate downward below the circumference trajectory of the seedling container 22. Since the support body 30 is not provided above the seedling planting body 20, the bottom lid 27 is supported by the support body 30 when the seedling container 22 passes above the seedling planting body 20. Is opened so that the seedling in the seedling container 22 can be dropped downward by rotating downward. The timing at which the bottom cover 27 of the seedling container 22 is opened is adjusted so that the seedling planting body 20 rises to just below the seedling container 22. Moreover, it replaces with the said structure, and when the seedling planting body 20 raises to just under the seedling container 22, the open | release operating member provided in the seedling planting body 20 is the seedling container 22 located above the seedling planting body 20. It is also possible to adopt a configuration in which the restriction means for restricting the opening of the bottom lid 27 is operated to release the restriction.
The seedling supply device 6 is configured to supply seedlings by moving the seedling container 22 around the four seedling planting bodies 20 in one turn.

Thus, when it is set as the structure which the seedling container 22 moves around once with respect to the four seedling planting bodies 20 and supplies a seedling, the seedlings which fall and supply corresponding to each seedling planting body 20 are set. Each of the seedling containers 22 to be stored is provided, and each of the seedling containers 22 is provided with one seedling container 22, and the seedling container 22 is composed of four seedling containers 22 that are adjacent to each other through a circular movement path. 8 shows the protrusion 35 of the bottom lid 27, and FIG. 9 shows the relationship between the protrusion 35 of the bottom lid 27 and the support shaft. The bottom cover 27 marked with reference numeral 1 of the seedling container 22 is opened at the drop supply position 32, the bottom cover 27 marked with reference numeral 2 of the seedling container 22 is opened at the drop supply position 33, and the seedling is stored at the drop supply position 34. The bottom lid 27 marked with the reference numeral 4 of the body 22 is configured to open. The four seedling containers 22 having the bottom lid 27 constitute one seedling container unit, and the seedling container units are continuously provided to form a loop-shaped seedling container unit that moves around). The mechanism 23 is configured to move a plurality of sets (six sets) of the seedling accommodation units on the same circulation movement route, and the 24 seedling accommodation bodies 22 are moved around.
Accordingly, the four drop supply positions 31, 32, 33, and 34 corresponding to the four seedling planting bodies 20 are set on the same circular movement path of the seedling container 22.

  Further, when the two seedling planting bodies 20 on the left and right sides are moved up to the top dead center position by the vertical movement mechanism 21, each seedling container 22 that drops and supplies to the seedling planting body 20 corresponds to the corresponding drop supply position. When the vertical movement mechanism 21 is operated for a half cycle and the two seedling planting bodies 20 on the other side on the left and right sides move up to the top dead center position, they fall to the seedling planting body 20. Each seedling container 22 to be supplied is configured to reach the corresponding drop supply position at the same time.

  Strictly speaking, the bottom lid 27 of the seedling container 22 starts to open at a timing before the seedling planting body 20 reaches the top dead center position, and when the seedling planting body 20 reaches the top dead center position, the bottom lid 27 is set to be surely opened, so that the seedling supply to the seedling planting body 20 is performed appropriately. Therefore, the operation of the vertical movement mechanism 21 of the seedling planting device 5 and the movement of the seedling accommodation unit by the movement mechanism 23 are performed in the same cycle, and the seedling accommodation body 22 moves by two pitches of the arrangement by this half cycle operation. It is the composition to do.

  Thereby, the seedling container 22 can supply seedlings without causing seedling supply leakage to the four seedling planting bodies 20 while passing through the four drop supply positions 31, 32, 33, 34 in series, In addition, seedlings can be supplied to the seedling planting body 20 without leaving a seedling container 22 that does not supply seedlings after passing through the four drop supply positions 31, 32, 33, 34. The supply work can be performed with a margin, and the seedlings can be reliably supplied to the four seedling planting bodies 20.

  Further, at least when the seedling container 22 that drops and supplies to the seedling planting body 20 on the lower side in the circumferential movement direction of the seedling container 22 passes above the seedling planting body 20 on the upper side in the circumferential movement direction of the seedling container 22. Is provided with an opening mechanism 24 that prevents the seedling container 22 from being opened.

  The opening mechanism 24 will be described. A protrusion 35 is provided on the bottom lid 27 of the seedling container 22, and the protrusion 35 is provided at a drop supply position on the upper side in the circumferential movement direction from the drop supply positions 32, 33, 34 of the seedling container 22. A support shaft 30 is provided to support from below when passing through 31, 32, 33. The bottom lid 27 is configured to rotate around the rotation fulcrum shaft on the lower side in the circumferential movement direction and open from the upper side in the circumferential movement direction.

  Specifically, as shown in FIG. 8, the shape of the projection 35 of the bottom lid 27 is made different for each seedling container 22 corresponding to each drop supply position 31, 32, 33, 34. Are those that protrude shortly around the circumference of the seedling container 22, those that protrude short inside the circumference of the seedling container 22, those that protrude long inside the circumference of the seedling container 22, and long outside the circumference of the seedling container 22 Four types of protrusions are set corresponding to the drop supply positions 31, 32, 33, and 34.

  On the other hand, the support shaft 30 extends along the circular movement path of the seedling container 29 and extends from the inside to the outside of the seedling container 22 so as to support the protrusion 35 corresponding to the type of the protrusion 35 of the bottom lid 27. It consists of four types with different positions.

  Accordingly, if the first to fourth drop supply positions 31, 32, 33, and 34 are defined in order from the upper side (left side) in the circumferential movement direction, the third support shaft 30 from the inside of the circumference is provided at the first drop supply position 31. In the second drop supply position 32, the second support shaft 30 from the inside of the circuit is omitted, and in the third drop supply position 33, the first support shaft 30 from the inside of the circuit is omitted. At the position 34, the fourth support shaft 30 from the inside of the circuit is missing. It should be noted that the third support shaft 30 from the inside of the circuit is also missing at the fourth drop supply position 34, and the second support shaft 30 from the inside of the circuit is also missing at the third drop supply position 33, and the third and fourth At the drop supply positions 33 and 34, the second and third support shafts 30 do not hinder the opening of the bottom lid 27 to be opened at the drop supply positions 33 and 34.

  It should be noted that all the first to fourth support shafts 30 may be arranged in an area where all the bottom lids 27 need to be closed in order to replenish seedlings, such as the linear portion 28 on the front side of the circulation path. However, if the common support shaft 30a for supporting the vicinity of the center of the bottom lid 27 is provided, the configuration is simplified.

  Of the first to fourth drop supply positions 31, 32, 33, 34, the second and third drop supply positions 32, 33 are located in the linear portion 28 of the orbital movement path, and the first and fourth The drop supply positions 31 and 34 are arcuate portions 29 of the circular movement path and are close to the linear portion 28 on the opposite side (front side) of the front and rear sides of the linear portion 28 where the second and third drop supply positions 32 and 33 are located. In position.

  As a result, the arrangement intervals of the adjacent drop supply positions 31, 32, 33, and 34 along the circular movement path are made different, and a narrow arrangement interval among the arrangement intervals is located in the linear portion 28. The first to fourth drop supply positions 31, 32, 33, and 34 are set so that at least a part of the wide array interval is located in the arcuate portion 29, and the first to fourth drop supply positions in the left-right direction are set. The intervals between 31, 32, 33, and 34 are set to be substantially the same.

  In addition, the first to fourth drop supply positions 31, 32, 34, so that the seedlings can be supplied accurately at the upper positions of the corresponding seedling planting bodies 20 at the second to fourth drop supply positions 32, 33, 34. 33 and 34 are set slightly shifted to the upper side of the orbital movement with respect to the left and right center of the orbital movement path.

  The seedling planting machine 1 is provided with a soil covering pressure reducing wheel 37 for covering and suppressing the seedling planted by the seedling planting body 20 at positions near both rear left and right sides of the seedling planting location of each seedling planting body 20. That is, four sets of soil covering pressure reducing wheels 37 are arranged side by side in the left-right direction with respect to the four seedling planting bodies 20.

  The soil covering pressure reducing wheel 37 is a rolling wheel. As shown in the plan view for explaining the operation of the main part of the supporting structure of the soil covering pressure reducing wheel in FIG. 10 and the side view for explaining the operation of the main part showing the supporting structure of the soil covering pressure reducing wheel in FIG. A pipe member 38a is fixed to the fixed attachment member 25, and a left and right rotation support shaft 38 is provided so as to be rotatable through the inside thereof. Then, the soil covering pressure reducing wheel 37 for the rightmost seedling planting body 20 is freely mounted on a right covering soil pressure reducing wheel support frame 39a having a distal end fixed to the rotation support shaft 38. Further, the soil covering pressure reducing wheel 37 for the other three seedling planting bodies 20 includes inner covering soil pressure reducing wheel support frames 39b and 39c and a left covering soil pressure reducing wheel supporting frame which are rotatably mounted on the rotation support shaft 38. -Each of them is freely mounted on the 39d.

  The soil covering pressure reducing wheel support frame 39 is U-shaped so that the front side (the rotation fulcrum shaft 38 side) is opened in a plan view, and is configured by appropriately bending a pipe frame. The lower end of the rod 40 extending in the vertical direction for each planting strip is connected to the rear end portion of the covering soil pressure wheel support frame 39, and the upper ends of the rods 40 (four in total) of each planting strip are moved to the left and right. The extending pipe-like left and right frame 41 is penetrated at an appropriate position so that the rod 40 does not move in the left and right direction with respect to the left and right frame 41 by a front and rear direction pin.

  And the left end part of the rotation support shaft 38 fixed to the right covering soil pressure ring support frame 39a equipped with the soil covering pressure ring 37 for the rightmost seedling planting body 20 is the left covering soil pressure wheel support frame 39d. A base portion of a detection member 38c extending to the left outer side and provided rearward is fixed.

  On the other hand, a base portion of a plate body 39d ′ provided toward the left outer side is fixed to the left covering soil pressure wheel support frame 39d, and a tip end of an inner wire is fixed to the plate body 39d ′. A sensor wire S is provided for detecting the right and left inclination of the farm scene (upper surface) by fixing the tip of the outer wire to 38c.

  That is, the right covering soil pressure-reducing wheel support frame 39a fixed to the rotating support shaft 38 and the detection member 38c move in the same direction in the vertical direction, and the left covering soil pressure-reducing wheel support frame 39d moves to the rotation support shaft 38. Since it is mounted so as to be rotatable, if the field scene (the upper surface of the eaves) is inclined to the left and right, the interval L between the detection member 38c and the plate 39d ′ varies, and the sensor wire S detects the variation. In this way, the soil covering pressure wheel 37 for the rightmost seedling planting body 20 and the soil covering pressure wheel 37 for the leftmost seedling planting body 20 have functions as the right and left tilt sensor C.

  The other end of the sensor wire S is linked to a rolling control valve for extending and retracting the hydraulic cylinder B for left / right tilt control (not shown). For example, when the right side of the farm scene (top surface) is higher than the left side. In this case, since the soil covering pressure wheel 37 attached to the right soil covering pressure ring support frame 39a moves up along the field scene (upper surface), as shown in FIG. 11, the right soil covering pressure wheel supporting frame 39a. And the detection member 38c also moves upward and downward via the rotation support shaft 38, and the distance L between the detection member 38c and the plate body 39d ′ fluctuates in a direction wider than a predetermined value. As a result, the inner wire of the sensor wire S is pulled and the rolling control valve is switched to the direction in which the hydraulic cylinder B for left-right tilt control is contracted.

  Then, since the left rear wheel 7 moves upward, the aircraft tilts in a direction in which the left side is lowered. Then, when the machine body is tilted to the state along the farm scene (upper surface), the interval L between the detection member 38c and the plate body 39d ′ returns to a predetermined value, so that the rolling control valve becomes neutral by the sensor wire S, The operation of the left / right tilt control hydraulic cylinder B is stopped.

  On the contrary, when the left side of the farm scene (upper surface) is higher than the right side, the covering soil pressure wheel 37 attached to the left covering soil pressure wheel support frame 39d is raised along the farm scene (upper surface). Therefore, the left covering soil pressure wheel support frame 39d is also moved upward, the plate body 39d ′ is also moved upward, and the distance L between the detection member 38c and the plate body 39d ′ is changed in a direction narrower than a predetermined value. Due to the fluctuation, the inner wire of the sensor wire S is pushed, and the rolling control valve is switched to the direction in which the hydraulic cylinder B for left / right tilt control is extended.

  Then, since the left rear wheel 7 moves downward, the aircraft tilts in a direction in which the left side becomes higher. Then, when the machine body is tilted to the state along the farm scene (upper surface), the interval L between the detection member 38c and the plate body 39d ′ returns to a predetermined value, so that the rolling control valve becomes neutral by the sensor wire S, The operation of the left / right tilt control hydraulic cylinder B is stopped.

  In this way, when the configuration is such that the inclination of the field scene (top surface) is detected by the height variation of the soil covering pressure reducing wheels 37 on both the left and right sides, and the aircraft is controlled to follow the inclination of the field scene (top surface). Even in the seedling planting machine 1 that can detect the inclination of the various farm scenes (upper surface) and plant a plurality of strips (four in this embodiment) on the farm scene (upper surface) according to the inclination state of the farm scene (upper surface) Each plant can be properly planted and can be planted well.

  Further, the rotation support shaft 38 fixed to the right covering soil pressure ring support frame 39a equipped with the soil covering pressure wheel 37 on the left and right ends is used as the inner covering soil pressure wheel supporting frame 39b equipped with the other soil covering pressure wheel 37. 39c and the left cover soil pressure reduction wheel support frame 39d, and the rotation support shaft 38 is extended to the outer side of the left and right cover soil pressure reduction wheel support frame 39d to cover the soil. Since the detection part D (detection member 38c, plate 39d ', sensor wire S) for detecting the inclination is provided on the outer side of the wheel support frame 39d, the cover soil pressure reducing wheel 37 is used with a simple structure. A left / right tilt sensor C is formed.

  Furthermore, since the detection part D (detection member 38c, plate body 39d ', sensor wire S) is arranged on the outer side of the outermost cover-squeezing wheel support frame 39d, the detection part is viewed from the side of the machine body. The workability is good because D can be adjusted and maintained.

  It should be noted that the left and right driving rear wheels 7 and the left transmission case 10 provided at the front ends of the left and right transmission cases 10 whose front portions are rotatably supported by the airframe are rotated to rotate the left rear wheel 7. Left and right tilt control hydraulic cylinder B and a rolling control valve that activates left and right tilt control hydraulic cylinder B based on the detection of left and right tilt sensor C. A control mechanism is configured to control the height of the right and left outermost seedling planting body 20 with respect to the field scene to a predetermined height based on the detection of the height difference.

A plurality of needle-like protrusions 37a are attached to the surface of the rotary body of the pressure-reducing wheel 37 of the seedling transplanter 1 of the present embodiment so that holes can be formed in places of the multi-fill film. For this reason, water cannot remain on the multifill.
Further, although not shown in the front wheel portion, if a needle-like projection is attached to the surface of a pair of rotating bodies provided on both sides of the front wheel, a hole can be made in the multi-film at the front and rear wheel portions.

  Further, an L-shaped grooved bar 95 (FIG. 3) is provided between the two seedling planting bodies 20. Since the contact portion of the bar 95 with the field extends in the left-right direction, the field can be provided with a groove in the left-right direction. Water on the multifilm easily flows out from the groove toward both sides of the film. If the grooved bar 95 can be adjusted up and down, the depth of the groove formed on the multi-film can be changed.

Further, by forming a hole (not shown) in the pressure reducing wheel 37 and discharging water from the pressure reducing wheel 37 to the outside, it is possible to prevent mud from adhering to the ground contact surface of the pressure reducing wheel 37. Can do.
Further, as shown in a front view of the pressure reducing wheel 37 in FIG. 13, mud can be prevented from adhering to the surface of the pressure reducing wheel 37 by changing the thickness of the pressure reducing wheel 37 wide and narrow.

  In addition, if the rotational speed of the pressure reducing wheel 37 can be freely changed with a configuration in which transmission from the engine to the pressure reducing wheel 37 is performed via the transmission, the slip rate of the pressure reducing wheel 37 with respect to the field scene changes. There is an effect that can be changed.

  In addition, by constructing all the left and right covering soil pressure wheels 37 so that they can be moved up and down independently, it is possible to properly suppress the seedlings that have been properly planted even in the kamaboko-shaped ridges (the ridges having a circular top surface). Therefore, the seedling can be transplanted well.

  The left and right frame 41 is fixed to a rotating arm 43 that rotates back and forth or up and down around a rotating shaft 42 in the left and right direction fixed to the body frame 19. The pivot shaft 42 extends from the body frame 19 to the left and right, and pivot arms 43 are provided on both ends of the pivot shaft 42, respectively. -It is the structure which supported the suitable position of the mud 41. A U-shaped rotation lever 44 is fixedly provided so as to connect the left and right rotation arms 43, and the rotation lever 44 rotates integrally with the left and right rotation arms 43. It is like that. Accordingly, by turning the turning lever 44, the left and right turning arms 43 are turned to simultaneously move up and down the covering soil pressure reducing wheels 37 of all the planting strips (for a total of four strips). You can also. Therefore, the soil covering pressure reducing wheel support frame 39, the rod 40, the left and right frames 41, the rotating arm 43, the rotating lever 44 and the like constitute a soil covering pressure reducing wheel supporting mechanism.

  An empty seedling planting lever 45 for driving only the seedling planting device 5 and the seedling supply device 6 is provided in the vicinity of the steering handle 2 without driving the aircraft, and seedling planting is performed by the empty seedling planting lever 45. Only the device 5 and the seedling supply device 6 are driven to confirm and check the operation of these devices 5 and 6. As shown in FIG. 1, when the empty seedling planting lever 45 is operated to face downward, the empty seedling planting function is turned off, and the seedling planting device 5 is operated while the body is traveling by the operation of the planting / lifting operation tool 15. And it will be in the state which can perform the normal planting which operates the seedling supply apparatus 6. FIG. On the other hand, if the empty seedling planting lever 45 is operated so as to face upward, the empty seedling planting function is turned on, and only the seedling planting device 5 and the seedling supply device 6 are operated in a stopped state.

  This seedling planting machine 1 is provided with a worker seat 46 on which an operator sits so that an operator who supplies seedlings to the seedling supply device 6 can get on and perform seedling supply operations. Specifically, an operator seat 46 is disposed rearward at the center of the left and right sides of the machine body that is the front side of the seedling supply device 6.

  The operator sitting on the seat 46 is seated in a rearward-facing posture toward the front side portion of the seedling supply device 6, and in front of the front side portion of the seedling supply device 6, in particular, on the front side of the circulation path of the seedling container 22. A seedling replenishing operation is performed on the portion 28. In addition, the seedling transplanter 1 of the present example has a seedling supply device 6 while an operator stands and walks forward in front of the steering handle 2 provided on the rear side of the body on the rear side of the rear wheel 7 that travels in the ridge. A work space W that enables a work for replenishing seedlings is formed on the rear side of the rear, and a worker standing in the work space W can perform seedling replenishment work on the rear side of the seedling feeding device 6. it can.

  A seat frame 47 that extends in a substantially horizontal direction for supporting the seat 46 is provided, and the seat 46 is configured to be capable of rotating rearwardly about a rear pivot point with respect to the seat frame 47. A fuel tank refueling cap 48 located in the vicinity of the frame 47 is in a lower position. As a result, when refueling the fuel tank, the seat 46 is rotated rearward, a replenishment tank for storing the fuel is placed in the seat frame 47, and the fuel tank is easily refilled with a manual pump or the like. be able to.

  Steps 49 are provided on the rear side and the left and right sides of the worker seat 46. This step 49 extends from the position below the operator seat 46 to the position above the front wheel 8, that is, near the front end of the machine body as viewed from the side of the machine body. Therefore, the operator can get on and off the step 49 through the front of the machine body. The rear wheel 7 is a large-diameter wheel, and the front wheel 8 is a small-diameter wheel, and is provided so that the front side portion of the step 49 is located above the front wheel 8 of the small-diameter wheel in a side view of the body. When the traveling transmission case 10 is rotated downward to lower the rear wheel 7, the airframe tilts forward and the step 49 also tilts forward, so that the operator can move between the front of the airframe and the step 49. You can get on and off easily. Even if the rear wheel 7 is lowered, the step between the ground in front of the fuselage and the step 49 does not become so large, so it is possible to get on and off easily.

On the left and right sides of the operator's seat 46, seedling platforms 50 capable of accommodating seedlings to be supplied to the seedling supply device 6 are provided above the axle 12 of the rear wheel 7 in a side view of the body.
In the upper part of the seedling supply device 6, a rear seedling placing stand 51 is disposed so as to be inclined so that the front is lowered. The rear seedling stage 51 is fixedly supported by the support frame 52 to the frame part of the seedling supply device 6, and two cell trays T are placed so that the longitudinal direction is in the left and right direction, and there is a little space SP. The length of the mounting table 53 and the front / rear wall 54 that prevents the cell tray T from falling off in the front-rear direction are configured. The rear half 53a of the mounting table 53 is configured to be rotatable and fixed in the arrow arrow direction with the rotation support shaft 64 as a rotation fulcrum.

  When the planting worker sits alone on the worker seat 46 and replenishes the seedling supply device 6, the latter half 53a of the mounting table 53 is moved upward in the direction of arrow A in FIG. In the state indicated by the solid line, the seedlings are taken out from the cell tray T positioned on the near side (downward side) of the two cell trays T and the seedling supply device 6 is replenished with the seedlings. When the seedling of the cell tray T located on the near side (downward side) disappears, when the cell tray T located on the near side (downward side) is taken from the rear seedling placing stand 51, the cell tray T located above is automatically lowered. It will slide down and become a position where seedling replenishment work is easy. Therefore, seedling transplanting work can be performed efficiently.

  Also, two or three planting workers are seated on the operator seat 46 and the operator who works to replenish seedlings to the seedling supply device 6 and the rear body 7 on the rear side of the rear wheel 7 traveling in the groin. When there is an operator who replenishes the seedling supply device 6 while standing in front of the work space W (FIG. 2) on the outer side in the left-right direction of the steering handle 2 provided at the rear, the second half of the mounting table 53. When the portion 53a is moved downward in the direction of the arrow B in FIG. 1, the front half of the mounting table 53 is inclined so that the front is lowered, and the latter half is inclined so that the rear is lowered. The cell tray T placed on the worker's seat 46 and placed in an inclined state so that the front part of the front half of the placement table 53 is lowered becomes a worker who works to replenish the seedling supply device 6 with seedlings. The seedlings are taken out from the seedlings, the seedling supply device 6 is replenished with seedlings, and standing in the work space W An operator who replenishes the seedling supply device 6 while walking forward takes out the seedling from the cell tray T placed in an inclined state so that the rear of the latter half is lowered, and replenishes the seedling supply device 6 with the seedling, The workability is very good and seedling transplanting work can be done efficiently.

  Left and right side markers 55 (FIG. 2) are provided on the left and right outer portions of the right and left outermost right covering soil pressure-reducing wheel support frame 39a and left covering soil pressure-reducing wheel support frame 39d, respectively. Each of the left and right side markers 55 is configured so that it can be adjusted to move left and right and up and down. The left and right side markers 55 are seated on the operator's seat 46 in accordance with the left and right outer positions of the pods that are planting the seedlings. Then, an operator who replenishes the seedling supply device 6 visually confirms whether the left and right side markers 55 are positioned at the left and right outer positions of the heel, and confirms whether the aircraft is traveling along the heel. At this time, since the left and right side markers 55 are provided on the left and right outer portions of the right and left outermost right covering soil pressure wheel support frame 39a and the left covering soil pressure wheel support frame 39d, the visibility is good and the workability is improved. very good.

  Further, when turning the body at the edge of the heel, the turning lever 44 is turned to move the soil covering pressure reducing wheel 37 of all the planting strips at the same time. Since it is provided at the left and right outer portions of the outer right covering soil pressure wheel support frame 39a and the left covering soil pressure wheel support frame 39d, the left and right side markers 55 also move up at the same time and do not interfere with turning. The turning work is also good and the workability is good.

  As described above, the seedling planting machine 1 travels forward in a state in which the pair of left and right front wheels 8 and the pair of left and right rear wheels 7 straddle the fence, while the seedling planting body 20 is staggered in four rows in the field. Plant. The seedling supply device 6 supplies seedlings to the seedling planting body 20. The operator can perform an operation of sitting on the operator seat 46 and replenishing the seedling supply device 6 with seedlings.

  In addition, in the mutual space | interval of the 1st-4th fall supply position 31,32,33,34 in the circumference movement path | route of the seedling container 22, the space | interval of each right and left outer part is set to X pitch, and the space | interval of the left-right center part Is Y = 1 pitch, and if X = 1 + 4n and Y = 3 + 4m (n and m are integers of 0 or more), the corresponding seedlings at the first to fourth drop supply positions 31, 32, 33, and 34, respectively. It can be set as the structure which supplies a seedling from the container 22 to the seedling planting body 20. FIG. In addition, even in the form of X = 2 + 4n, Y = 3 + 4m, seedlings are supplied from the corresponding seedling container 22 to the seedling planting body 20 at the first to fourth drop supply positions 31, 32, 33, 34, respectively. It can be set as the structure to do. Therefore, when a circular arc portion is located at the center of the left and right of the orbital movement path of the seedling container 22, a staggered spacing in the front-rear direction is obtained in the case of desired planting strips or staggered planting according to the circumference movement path. It is only necessary to set the distance between the first to fourth drop supply positions 31, 32, 33, and 34 in the circular movement path.

  In the above description, the two right and left pairs of seedling planting bodies 20 operate with a half-cycle phase shifted, and the first and second drop supply positions 31 and 32 and the third and fourth drop supply positions 33 and 34 In the above description, the timing of arrival of the seedling container 22 for supplying the seedlings that fall is different. However, all the seedling planting bodies 20 are operated synchronously, and the seedlings are simultaneously fed to all the fall supply positions 31, 32, 33, and 34. It is good also as a structure which supplies. At this time, the distance between the drop supply positions 31, 32, 33, and 34 may be X = 2 + 4n, Y = 1 + 4m or X = 3 + 4n, Y = 1 + 4m.

  Further, in the above description, the protrusion 35 of the bottom lid 27 protrudes short on the outer periphery of the seedling container 22, protrudes short on the inner periphery of the seedling container 22, and protrudes longer on the inner periphery of the seedling container 22. In the above description, the four types of the ones and the ones that protrude long outside the circumference of the seedling container 22 have been described, but according to this configuration, the timing at which each bottom lid 27 is opened is the drop supply positions 31 and 32 in the circumferential movement. , 33, and 34, and the bottom cover 27 does not close until the fourth drop supply position 34 is reached thereafter. Therefore, the arcuate portion 29 and the rectilinear portion 28 on the rearward movement path while walking. When the seedling is replenished, it is easy to determine the seedling container 22 that needs to be replenished, and the seedling replenishment workability is improved. Further, according to this configuration, a support shaft is added so that the bottom lid 27 does not open at the second and third drop supply positions 32 and 33, and the vertical movement mechanism 21 of the seedling planting device 5 is activated. If the operating speed of the moving mechanism 23 is doubled, seedlings are supplied only at the first and fourth drop supply positions 31 and 34, and a wide two-row planting between the planting strips is performed. Can do.

  As shown in the side view for explaining the operation of the height adjusting portion of the seedling planting body 20 in FIG. 12, in the four-row planting seedling transplanter, the planting depths on the left and right outer sides are related to the kamaboko shape. Tend to be shallow. Therefore, as a configuration in which the left and right outer one seedling planting body 20 can be adjusted up and down with respect to the inner two seedling planting bodies 20, the left and right outer one seedling planting body 20 is more than the inner two strips seedling planting body 20. Can be set downward.

  That is, the connecting shaft 56 that connects the inner seedling planting body 20 and the outer seedling planting body 20 is supported by the vertical movement mechanism 21 via the height changing mechanism 57. The height changing mechanism 57 includes an up-and-down moving member 58 formed of a U-shaped rear-viewing U-shaped plate fixed to the connecting shaft 56, and a U-shaped rear-viewing U-shaped so as to surround the up-and-down moving member 58. A base member 59 composed of a plate of a mold, a screw shaft 60 vertically passing through the vertical movement member 58 and the base member 59, and a torque wire 61 that rotates integrally with the screw shaft 60 at the upper end of the screw shaft 60. And is configured. The base member 59 is connected to the vertical movement mechanism 21.

  Further, the upper and lower horizontal plate portions 58a of the vertical moving member 58 are positioned between the upper and lower horizontal plate portions 59a of the base member 59, and the horizontal plate portions 58a of the vertical moving member 58 and the base member 59 are arranged. 59b is overlapped in plan view of the aircraft. The screw shaft 60 is rotatably supported by the upper and lower horizontal plate portions 59a of the base member 59 so as not to move in the axial direction, and is fixed to the upper and lower horizontal plate portions 58a of the vertical movement member 58. The weld nut 62 is screwed.

  Accordingly, the upper and lower horizontal plate portions 59 a of the base member 59 serve as shaft support portions for supporting the screw shaft 60, and the weld nut 62 fixed to the upper and lower horizontal plate portions 58 a of the vertical movement member 58 is screwed to the screw shaft 60. It becomes a screwing part to do. The other end of the torque wire 61 is connected to an operation handle 63 disposed in the vicinity of the operator seat 46, and the screw shaft 60 is rotated via the torque wire 61 when the operation handle 63 is rotated. It has become.

  Therefore, when the operator rotates the operating handle 63 disposed in the vicinity of the operator seat 46 to rotate the screw shaft 60, the vertically moving member 58 moves along the screw shaft 60 with respect to the base member 59. It moves vertically and moves the connecting shaft 56 up and down to change the height of the seedling planting body 20 on the outer side in the left-right direction. The vertical movement member 58 is restricted from moving up and down when the upper and lower horizontal plate portions 58a of the member 58 are in contact with the upper and lower horizontal plate portions 59a of the base member 59, and can move up and down only within a predetermined range. It is configured. The vertically movable range of the vertically moving member 58 is up and down from the height of the seedling planting body 20 on the outer side in the left-right direction to a height that is substantially lower than the seedling planting body 20 on the inner side in the left-right direction. It is set to be able to move.

It is the whole side view of one Example of the seedling transplanter of this invention. It is a whole top view of the seedling transplanter of FIG. It is a whole side view of the other Example of the seedling transplanter of this invention. It is a whole side view of the other Example of the seedling transplanter of this invention. It is the whole side view (FIG. 5 (a)) and the other arrangement | positioning figure (FIG.5 (b), FIG.5 (c)) of the crawler apparatus of the other Example of the seedling transplanter of this invention. It is a side view of the wheel part of one example of the seedling transplanter of the present invention. It is a front view of the wheel part of one example of a seedling transplanter of the present invention. It is a figure which shows the processus | protrusion of the bottom cover of the seedling transplanter of FIG. It is a figure which shows the relationship between the processus | protrusion of the bottom cover of the seedling container of the seedling transplanter of FIG. 1, and a support shaft. It is a top view for effect | action description of the principal part which shows the support structure of the soil covering pressure reduction ring of the seedling transplanter of FIG. It is a side view for an effect | action description of the principal part which shows the support structure of the soil covering pressure reduction ring of the seedling transplanter of FIG. It is a side view for action explanation which shows the height adjustment part of the seedling planting body of the seedling planting machine of FIG. It is a front view of one Example of the suppression wheel of the seedling transplanter of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seedling machine 2 Steering handle 3 Engine 4 Traveling vehicle body 5 Seedling planting device 6 Seedling supply device 7 Rear wheel 8 Front wheel 9 Mission case 10 Left and right transmission case 11 Axle case 12 Drive shaft 13 Arm 14 Sensor 15 Planting / lifting operation tool 16 Horizontal frame 17 Vertical frame 18 Axle 19 Machine frame 20 Seedling planting body 21 Vertical movement mechanism 22 Seedling container 23 Movement mechanism (sprocket) 24 Release mechanism 25 Mounting member 26 Transmission case 27 Bottom cover 28 Linearly moving part 29 Circle Arc moving part 30, 30a Support shaft 31, 32, 33, 34 Drop supply position 35 Protrusion 36a, 36b Support piece 36c Rod 36d Adjuster 37 Covering soil pressure wheel 37a Needle-shaped protrusion 38 Rotating support shaft 38a Pipe material 38c Detection Member 39a-39d Cover soil pressure reduction wheel support frame 39d 'plate 4 Rod 41 right and left frame - arm 42 the pivot shaft 43 Kaidoa - arm 44 pivoting lever 45 an empty seedling planting lever -
46 Worker's seat 47 Seat frame 48 Refueling cap 49 Step 50 Seedling stage 51 Rear seedling stage 52 Support frame 53 Placement part 54 Front and rear wall part 53a Rear half part 55 Left and right side markers 56 Connecting shaft 57 Height changing mechanism 58 Up and down Moving member 58a Lateral plate portion 59 Base member 59a Lateral plate portion 60 Screw shaft 61 Torque wire 62 Weld nut 63 Operation handle 64 Rotating support shaft 71, 81 Parallel crawler traveling device 71a, 81a Mudguard cover 71a1, 81a1 Step 71b , 81b Rotating support shaft 72 Triangle crawler travel device 72a Mudguard cover 72a1 Step 72b Drive wheel 72c, 72d Driven wheel 73 Connection arm 74 Adjuster 75 Crawler frame 82 Triangle crawler travel device 83 Sled 90, 90 Crawler tie Tire type wheel 95 grooved bar C right / left tilt sensor D detector S sensor wire T cell tray SP space W work space

Claims (2)

  In a seedling planting machine in which a seedling planting body (20) for planting seedlings in a field is arranged and a covering soil pressure ring (37) is provided behind the seedling planting body (20), a plurality of grounding surface on the ground contact surface of the soil covering pressure wheel (37) A seedling transplanter provided with a needle-like protrusion (37a).   By arranging a seedling planting body (20) for planting seedlings in a farm field, and moving the top and bottom and pressing the lower part against the ground in a seedling planting machine provided with a cover soil pressure ring (37) behind the seedling planting body (20) A seedling planting machine provided with a grooving tool (95) for making drainage grooves in the left-right direction.

Images