JP4348497B2 - Multi-row seedling transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a multiple-planting type in which seedlings of various crops placed in a large number of pots in a seedling tray are planted at appropriate intervals for a plurality of strips while traveling at an appropriate speed with respect to the straw in the field. Is related to the seedling transplanter.
[0002]
[Prior art]
Conventionally, this kind of seedling transplanting machine is generally a traveling machine body that travels with left and right traveling wheels, as disclosed in, for example, Japanese Patent Laid-Open Nos. 7-8029 and 9-28130. In addition, an engine as a power source, a seedling take-out supply mechanism for taking out a seedling one by one from each pot in a seedling tray mounted on the traveling machine body and supplying it to a transplanting mechanism described later, and a seedling from the seedling take-out supply mechanism And a seedling planting mechanism for transplanting the seedlings in the field, and the seedling planting mechanism of the seedling transplanting machine includes the seedling taking-out and feeding mechanism in a cup body that is vertically divided so as to open to the left and right. When the seedling is received, the cup body descends so that the lower end of the cup is inserted into the cocoon, and then opens to the left and right, so that the seedling is planted in the cocoon, and then the seedling is covered with a covering ring. And a configuration that put the soil.
[0003]
In this case, conventionally, since a single cup body is provided in the seedling planting mechanism and the single cup body is moved up and down, the seedling planting speed on the field is slow.
[0004]
Therefore, recently, the seedling planting mechanism is vertically divided so as to open to the left and right at each of the left and right ends of the rotary case. It has been proposed that a cup-type cup body is provided, and that both cup bodies are moved up and down by the rotation of the rotary case.
[0005]
When the seedling planting mechanism is configured as a rotary type as described above, conventionally, the rotary type seedling planting mechanism is provided on both the left and right side surfaces of the transmission case that moves up and down relative to the traveling machine body. By attaching a covering ring to be grounded to the saddle surface behind the planting mechanism to the transmission case, a multi-row (two-row) planting type is configured.
[0006]
[Problems to be solved by the invention]
However, in the multiple-row (two-row) planting seedling transplanter with this configuration, it is said that two seedling planting mechanisms and a cover ring for each of these are attached to one transmission case that moves up and down relative to the traveling machine body. Due to the configuration, when one of the covered rings that touches the surface of the ridge is on a lump or stone on the surface and floats up from the surface, the other seedling planting mechanism and the other covered ring are also transmitted. The planting depth of the seedlings on the surface and the cover soil condition on the seedlings vary greatly for each seedling planting line, so that the seedlings can be stably planted along multiple lines. There was a problem that could not.
[0007]
The present invention has a technical problem to solve this problem.
[0008]
[Means for Solving the Problems]
In order to achieve this technical problem, the present invention provides a "seedling that takes out one seedling from each pot in a seedling tray mounted on a traveling body supported by front and rear four wheels and mounted with an engine and a transmission case. and Fetch and Organization, a seedling planting mechanism for transplanting seedlings from the seedling taking out mechanism relative to the field, and a soil covering wheel grounded behind the seedling planting mechanism, further, the seedling taking out and Organization In the multi-row planting seedling transplanting machine in which a plurality of the seedling planting mechanism and the cover ring are arranged in the left-right direction at appropriate intervals, a power transmission shaft for transmitting power from the mission case to the seedling planting mechanism is incorporated. One planting transmission case is provided between the left and right rear wheels so as to extend from the transmission case to the rear side in the traveling direction of the traveling vehicle body. The covering ring support frame to be worn is fixed, and the planting transmission case is divided into a first half part to be attached to the transmission case, and a second half part to which each seedling planting mechanism and the covering ring support frame are attached, By inserting the latter half part rotatably with respect to the first half part, the latter half part can freely roll around a longitudinal axis extending in the front-rear direction through the center of the traveling machine body in a plan view. It is configured as "
[0009]
[Operation and effect of the invention]
By configuring in this way, seedlings can be planted on the cocoon simultaneously along a plurality of seedling planting strips. In response to riding on a lump or stone in the surface, the cover ring in the other seedling planting surface floats from the surface, and in turn the seedling planting mechanism in the other seedling planting surface floats from the surface. Can be reliably reduced.
[0010]
Therefore, according to the present invention, there is an effect that the seedling can be stably planted along the plurality of seedling planting strips so that the seedling planting depth and the soil covering condition with respect to the seedling are substantially constant.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0012]
1 to 9 show a first embodiment.
[0013]
In this figure, reference numeral 1 denotes a traveling machine body. A main frame 3 in the traveling machine body 1 is equipped with an engine 2 and a transmission case 4, and a pair of arms 5 extending rearward from the left and right sides of the main frame 3. Front wheels 6 are respectively mounted, and a rear wheel 8 is mounted on both ends of a drive horizontal shaft case (not shown) extending laterally on the rear side of the main frame 3 via a transmission case 7. The power from 4 is transmitted to the rear wheel 8, and the traveling machine body 1 travels.
[0014]
The front wheel 6 and the rear wheel 8 are configured to be swingable up and down via a swing mechanism 9 provided on the main frame 3 and a swing hydraulic cylinder (not shown), so that the front wheel 6 and the rear wheel 8 travel with respect to the saddle surface M. The height of the airframe 1 can be changed (the height to the ground can be adjusted).
[0015]
A handle 11 extending rearward is provided at the upper end of the chassis frame 10 provided so as to extend to the rear part of the traveling machine body 3, and the seedling mount 12 is disposed so as to be reciprocally movable left and right with respect to the chassis frame 10. A supply device 13 is provided.
[0016]
This seedling stage 12 is configured to reciprocate left and right via a lateral feed mechanism which will be described later, and the seedling stage 12 is provided with a seedling pot portion 14a in a matrix in front, rear, left and right in the traveling direction in plan view. A seedling tray 14 is placed and the seedling pot portion 14a is intermittently vertically moved one pitch at a time in the forward direction of the traveling machine body 1 at the end of the lateral feed by a vertical feed mechanism (described later) provided on the seedling platform 12. It is configured to send.
[0017]
The rotary seedling planting mechanism 15 is provided on each of the left and right side surfaces via one planting transmission case 16 extending from the mission case 4 to the rear side in the traveling direction of the traveling vehicle 1 between the left and right rear wheels 8. It has been.
[0018]
The both seedling planting mechanism 15 is composed of a cup body 17 and the like for receiving the pot seedling N to be transplanted in the ascending position and transplanting the pot seedling N to the field in the descending position. A pair of left and right seedling extraction mechanisms 18 including a seedling extraction claw 19 and the like for taking out the pot seedling N in the seedling pot portion 14a of the seedling tray 14 in the seedling supply device 13 and transferring and supplying it to the cup body 17 are provided. Power is transmitted from the transmission case 4 to the seedling supply device 13 and the seedling extraction mechanism 18 via a transmission path through a chain wound around a chain sprocket.
[0019]
Further, behind the seedling planting mechanism 15, a pair of soil covering rings 20 are arranged so as to cover the root part of the seedling planted while suppressing the heel surface M.
[0020]
Next, the seedling supply device 13 will be described with reference to FIGS. 2, 4 and 5. As shown in FIG. 2, the seedling stage 12 has a substantially rectangular frame frame 20 in a plan view, and a vertical feed case including a vertical feed transmission section as a vertical feed mechanism disposed on one side of the frame frame 20. 21, a transport chain 22 for vertically feeding the seedling tray 14, large and small chain sprockets 23, 24, a guide frame 25 arranged so that the empty seedling tray 22 is guided toward the rear end of the handle 11, etc. Consists of.
[0021]
A front guide roller 26 mounted on the frame frame 20 of the seedling platform 12 is inserted into a left and right longitudinal U-shaped guide rail 27 fixed to the chassis frame 10, while the rear of the frame frame 20 faces downward. The seedling table 12 is mounted so as to be movable left and right by placing U-shaped guide rails 28 on sliding guide pieces 29 fixed to the left and right sides of the chassis frame 11.
[0022]
The seedling tray 14 is made of a flexible soft synthetic resin material, and can be bent along the circumference of the large-diameter chain sprocket 23 when mounted on the transfer chain 22 and transferred. The pair of left and right transport chains 22 are rotatably mounted on a large-diameter chain sprocket 23 mounted on a longitudinal feed drive shaft 30 driven via a power transmission system in a longitudinal feed case 21 and a frame frame 20. It is wound around a small-diameter chain sprocket 24 in the driven shaft 31. The pair of left and right transport chains 22 are provided with laterally extending engagement pins 32 at an appropriate pitch P1, and the right and left engagement pins 32 of the seedling pot portion 14a aligned in the front-rear direction of transport in the seedling tray 14 are provided. It is engaged with the lower surface side of the continuous portion and reliably conveyed in the direction of arrow C in FIG.
[0023]
A reciprocating feed screw portion is formed on the transverse feed shaft 33 projecting from the transmission case in the transverse feed mechanism, and a feed block with a ship-type key that is screwed to the reciprocating feed screw portion and a frame on the seedling platform 12. An engagement piece such as an engagement bolt is connected, and the seedling stage 12 is configured to reciprocate left and right in the lateral width direction of the seedling tray 14.
[0024]
On the other hand, the vertical feed shaft 34 protruding from the vertical feed case 21 is intermittently rotated at the lateral feed end position of the seedling stage 12 and is provided at a distance from the vertical feed shaft 34 by the lateral feed distance. The kick pawl (not shown) kicks and rotates a driven cam (not shown) provided in the vertical feed case 21 to intermittently rotate the vertical feed drive shaft 34 via a transmission portion in the vertical feed case 21. The seedling pot portion 14a is configured to be intermittently fed vertically by a constant pitch P1.
[0025]
Next, the configuration of the seedling removal mechanism 18 having the seedling extraction claws 19 will be described with reference to FIGS. 4 and 5. In the two-row planting device, two seedling take-out mechanisms 18 are arranged in the left-right direction with respect to the traveling direction of the traveling machine body 1 and separated by an appropriate line interval L (details will be described later). The nail | claw 19 can take out the pot seedling N from the inside of the pot part 14a, and can drop the pot seedling N just above the said cup body 17 in a raise position, and can receive a seedling in the said cup body 17 Is to be arranged.
[0026]
That is, the seedling extraction claws 19 are a pair of two, and move as shown by a reference numeral 36 in FIG. 5 by a mechanism 35 that operates by power transmission from the mission case 4. The pot seedling N is gripped by entering and closing in the pot portion 14a, and then retracted from the pot portion 14a and moved almost right above the cup body 17, and then opened to open the pot seedling N. The operation of dropping into the cup body 17 is performed.
[0027]
Next, the structure of the rotary seedling planting mechanism 15 will be described with reference to FIG. 3 and FIGS. The PTO shaft 37 as an output shaft projecting to the side surface of the transmission case 4, a base end of the planting transmission case 16, and the fitting-pivoted rotatably around the PTO shaft 37, the planting transmission case 16 A driving shaft 38 is pivotally supported at the tip of the shaft, power is transmitted to the driving shaft 38 from the PTO shaft 37 by a power transmission shaft 39 in the planting transmission case 16, and both ends of the driving shaft 38 are connected to the planting transmission. Projecting from the left and right sides of the case 16, the seedling planting mechanism 15 is attached to each of both ends thereof.
[0028]
The seedling planting mechanism 15 includes a first rotary case 40 disposed on the outer surface of the transmission case 19 and second rotary cases 41 disposed on both ends of the outer surface of the first rotary cases 37. The cup body 17 is mounted on each of the second rotary cases 41, and the cup body 17 in one seedling planting mechanism 15 of the both seedling planting mechanisms 15 and the other one seedling planting mechanism. 15 is set to a predetermined interval L between the cup body 17 and the cup body 17.
[0029]
The above configuration will be described in more detail. The drive shaft 38 is protruded horizontally in the horizontal direction, and the inner cylinder 42 fitted so as to rotate integrally with the drive shaft 38 is fixed to the outer surface of the first rotary case 40. The outer cylinder 44 to which the first solar sprocket 43 arranged concentrically with the drive shaft 38 is fitted so as to be rotatable with respect to the outer periphery of the inner cylinder 42. In the first rotary case 40, rotation support shafts 45 are rotatably provided at the same rotational radius position at both ends in the longitudinal direction. The distal end portion of each rotation support shaft 45 protrudes horizontally from the side surface of the first rotary case 40, and the inner tube 46 fitted so as to rotate integrally with each rotation support shaft 45 is attached to the second rotary case 41. While fixed to the outer surface, the chain 48 is wound around the sprocket 48 and the first solar chain sprocket 43 which are respectively fixed to the rotary support shafts 45 in the first rotary case 40.
[0030]
Each outer cylinder 49 fitted so as to be rotatable relative to the inner cylinder 46 in each rotation support shaft 45 is fixed to the outer surface of the first rotary case 40, and each second In the rotary case 41, a first intermediate gear 51 that meshes with the second sun gear 50 that rotates integrally with the outer cylinder 49, a second intermediate gear 52 that rotates integrally with the second sun gear 50, and a driven gear that meshes with the first intermediate gear 51. A relative rotation support center shaft 54 to which 53 is fixed is rotatably supported.
[0031]
The relative rotation support center shaft 54 that is rotatably supported in each of the second rotary cases 41 is disposed at a position displaced with respect to the rotation support shaft 45 as will be described later. The cup body 17 is attached to the central shaft 54. The cup body 17 is composed of a pair of cup body pieces 17a and 17b obtained by halving a substantially conical shape that squeezes downward in the forward and backward directions of the traveling machine body.
[0032]
A cam body 55 is fixed to the outer periphery of the relative rotation support center shaft 54 of each second rotary case 41 so as to rotate integrally with the second rotary case 41, and Cup support means 56 for rotatably supporting the rotation support shafts 57a and 57b fixed to the outer surfaces of the upper end portions of the pair of front and rear cup body pieces 17a and 17b in the cup body 17 is provided at the distal end portion. Secure with bolts 58.
[0033]
As a link mechanism for opening and closing the cup body pieces 17a and 17b in the cup body 17, a pair of front and rear cylindrical bearing portions 60 in the cup support means 56 are provided at the base end portions of the rotation support shafts 57a and 57b. The L-shaped swing arm 61 is fixed to the middle part of each of the rotation support shafts 57a and 57b, and the roller 62 provided on one swing arm 61 is fixed to the other swing arm. It is fitted into a horizontally long guide groove 64 formed in 61 so as to be laterally movable. Further, the lower end sides of the swing arms 61 are connected by a tension spring 65, and are always urged so that the lower end sides of the pair of front and rear cup body pieces 17a and 17b are closed.
[0034]
Further, the upper end of the follower 66 that protrudes upward from the swing arm 61 to which the roller 62 is attached and whose protruding length can be adjusted by a nut portion or the like is formed on the outer peripheral cam surface 55a of the cam body 55. Keep in contact. In a portion of the outer peripheral cam surface 55a where the distance from the axis of the relative rotation support center shaft 54 is large, the follower 66 is pushed downward, and one of the swing arms 61 is rotated. The other swinging arm 61 is also rotated through the guide groove 64, and the lower ends of both cup body pieces 17a and 17b to which they are attached against the spring force of the tension spring 65 are opened. At the position of the outer peripheral cam surface 55a where the distance from the axis of the relative rotation support center shaft 54 is short, the two swinging arms 61 are moved at the lower ends of both cup body pieces 17a, 17b by the spring force of the tension spring 65. Is pivotally held in the closing direction.
[0035]
In the seedling planting mechanism 15 having this configuration, when the first rotary case 40 is rotated in the direction of arrow A via the drive shaft 38, the rotation support shafts 45 at both ends of the first rotary case 40 revolve. Since the chain 48 is wound around the sprocket 47 and the first solar sprocket 43 in the both rotation support shafts 45, the chain 48 rotates and each sprocket 47 also rotates.
[0036]
Since the rotation support shaft 45 to which the sprocket 47 is attached and the second rotary case 41 are fixed, they rotate integrally. That is, while the first rotary case 40 rotates, the second rotary case 41 rotates (rotates) in the opposite direction.
[0037]
In this case, when the reduction ratio between the first solar sprocket 43 and the sprocket 47 is 2 (acceleration), when the first rotary case 40 is oriented in the vertical direction, the vertical direction relative to the first rotary case 40 is When each of the relative rotation support center shafts 54 is positioned at the vertical position outside the rotation radius of the rotation support shafts 42 of each second rotary case 41 and the first rotary case 40 is oriented in a substantially horizontal direction. The posture of the second rotary case 41 changes so that the relative rotation support center shafts 54 are positioned on the inner diameter side of the rotation radius from the rotation support shaft 45 of the second rotary cases 41 with respect to the first rotary case 40. To do. In other words, the second rotary case 41 rotates twice for one rotation of the first rotary case 40.
[0038]
Then, by setting the reduction ratio from the second sun gear 50 in each second rotary case 41 to the driven gear 53 in each relative rotation support center shaft 54 to 1/2, the relative rotation support center shaft The posture of the cup body 17 attached to 54 is always controlled so that the lower end thereof is vertical, the turning locus of the second rotary case 41 with respect to the first rotary case 40, and each second rotary case 41. In relation to the change of the moving position of the relative rotation support center shaft 54 in the above, each cup body 17 and thus each relative rotation support center shaft 54 is long in the vertical direction, and is a short elliptical locus in front and rear in the traveling direction of the traveling machine body. (K) can be drawn.
[0039]
The shape of the outer peripheral cam surface 55a of the cam body 55 is such that the longitudinal direction of the first rotary case 40 (the side on which the second rotary case 41 is attached) is oriented in the vertical direction in a substantially vertical shape, and is positioned at the lower position. Immediately after the lower end portion of the cup body 17 in the second rotary case 41 enters the flange surface M, the lower end sides of both cup body pieces 17a and 17b open (the pot seedling N in the cup body 17 is thereby After the lower end portion of the cup body 17 is extracted from the heel surface M, it is formed so as to be able to perform an opening / closing operation of closing above the upper end of the transplanted seedling. It is.
[0040]
In addition, by providing the seedling planting mechanism 15 having the above-described configuration on both the left and right sides with one planting transmission case 16 in plan view, seedlings can be transplanted simultaneously along two seedling planting strips and along one strip. Two places can be transplanted at regular intervals, and high-speed seedling transplanting work can be realized.
[0041]
Then, as shown in FIG. 3, a cover ring support frame 70 configured in a frame shape is fixed to the planting transmission case 16 so as to surround the outside of the both seedling planting mechanisms 15 in a plan view. 70, the cover ring 20 for each of the seedling planting mechanisms 15 is mounted via a link mechanism 71 so as to be vertically adjustable.
[0042]
On the other hand, the planting transmission case 16 is divided into a front half portion 16a to be attached to the transmission case 4 and a rear half portion 16b to which the both seedling planting mechanism 15 and the cover ring support frame 70 are attached. By inserting the front half portion 16a so as to be rotatable, the rear half portion 16b freely rolls around a longitudinal axis 72 extending in the front-rear direction through the center of the traveling machine body 1 in plan view. Constitute.
[0043]
By configuring in this way, among the both covered earth rings 20 located behind the both seedling planting mechanisms 15, for example, the earth covered ring 20 located on the right side with the longitudinal axis 72 sandwiched between When climbing on a stone or the like and floating from the heel surface, the lift extends to the seedling planting mechanism 15 located on the left side of the longitudinal axis 72 and the soil covering ring 20 behind it, rolling around the longitudinal axis 72. Since it can be surely made smaller by moving, the seedling planting mechanism 15 and the soil cover ring 20 located on the right side and the seedling planting depth and the soil covering state for the seedlings, and the seedling planting mechanism 15 and the soil cover ring 20 located on the left side The seedling planting depth and the soil covering condition for the seedling can be made substantially the same, and the seedling can be stably planted along a plurality of strips.
[0044]
Next, FIG. 10 shows a reference example .
[0045]
In this reference example , a planting transmission case 16 ′ is pivotally mounted around the PTO shaft 37 on both left and right side surfaces of the transmission case 4, and the first planting transmission case 16 ′ is attached to the tip of the first planting transmission case 16 ′. A seedling planting mechanism 15 'configured in the same manner as in the above embodiment is mounted, and a pair of cover rings 20' for the seedling planting mechanism 15 are mounted so as to be vertically adjustable via a link mechanism 71 '.
[0046]
According to this configuration, the seedling planting mechanism 15 'and the cover ring 20' located on the right side and the seedling planting mechanism 15 'and the cover ring 20' located on the left side move up and down independently of each other. When the cover ring 20 ′ located on the right side rides on a lump or stone on the surface M and floats up from the surface, the lift is transferred to the seedling planting mechanism 15 ′ located on the left side and the cover ring 20 ′ behind it. The seedling planting mechanism 15 'and the soil cover ring 20' located on the right side and the seedling planting depth and the soil covering condition for the seedling, and the seedling planting mechanism 15 'and the soil ring 20' located on the left side The planting depth and the soil covering condition for the seedling can be made substantially the same.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a seedling transplanter according to a first embodiment.
FIG. 2 is a schematic plan view of the seedling transplanter.
FIG. 3 is a schematic plan view showing a main part of the seedling transplanter.
FIG. 4 is a side view showing a seedling supply device and a seedling removal mechanism in the seedling transplanter.
FIG. 5 is an enlarged view of a main part of FIG.
FIG. 6 is a cross-sectional view showing a seedling planting mechanism in the seedling transplanter.
7 is an enlarged side view taken along the line VII-VII in FIG. 6;
8 is an enlarged sectional view taken along line VIII-VIII in FIG.
FIGS. 9A and 9B are diagrams showing opening and closing of the cup body in the seedling planting mechanism, where FIG. 9A shows a closed state and FIG. 9B shows an open state.
FIG. 10 is a schematic plan view showing a main part of a seedling transplanter according to a reference example .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Traveling machine body 4 Mission case 14 Seedling tray 18 Seedling removal mechanism 15, 15 'Seedling planting mechanism 16, 16' Planting transmission case 17 Cup body 20, 20 'Covering ring 37 PTO shaft 38 Drive shaft 40 Rotary case 70 Covering ring support frame 72 Long axis

Claims (1)

The traveling machine body equipped with a supported and engine and transmission case at the front and rear wheel, and seedling taking out and Organization taking out seedlings one by one strain from each pot in seedling trays mounted thereto, from the seedling taking out mechanism a seedling planting mechanism for transplanting seedlings against field, and a soil covering wheel grounded behind the seedling planting mechanism, further, the seedling taking out and Organization, a plurality of seedling planting mechanism and cover soil wheels, left and right In a multi-row planting seedling transplanting machine that is arranged in the direction at appropriate intervals,
One planting transmission case having a built-in power transmission shaft for transmitting power from the mission case to the seedling planting mechanism is extended between the left and right rear wheels from the mission case to the rear side in the traveling direction of the traveling machine body. Provided to the planting transmission case, a cover ring support frame to which each cover ring is mounted is fixed,
The planting transmission case is divided into a first half part to be attached to the transmission case and a second half part to which each seedling planting mechanism and the cover ring support frame are attached, and the second half part is rotated with respect to the first half part. By being movably inserted, the latter half portion is configured to freely roll around a longitudinal axis extending in the front-rear direction through the center of the traveling machine body in a plan view.
Multi-row planting seedling transplanter.

Images