JP2000262116A - Soil covering roller device in seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent entanglement of stump at the axle part, bearing part, etc., of soil covering roller even if a stump projecting from the surface of a field M is brought close to a slantingly rotating roller having a small diameter when vegetable seedlings are planted in a field having a used trace of a paddy field. SOLUTION: In a seedling transplanter in which a pair of right and left vertically rocking cups for transplantation are delivered from a seedling tray on a traveling machine and seedlings are planted in a field, a pair of right and left soil covering rollers 20a and 20b for sweeping soil on the surface of the field to a seedling transplanting part are attached to a machine so that the rollers are installed behind the seedling transplanting part. A first protecting plate 98a and a second protecting plate 98b are arranged at a proper height from the surface of the field ahead the soil covering rollers 20a and 20b and the free end of a stump 100 can be pushed and curved in the traverse direction of the traveling machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter for removing seedlings such as vegetables from one seedling tray and planting the seedlings in a field (row). It concerns the configuration.

[0002]

2. Description of the Related Art Conventionally known seedling transplanters are, for example, disclosed in Japanese Unexamined Patent Publication No. Hei 8-130931. A case, a seedling planting device, and a seedling supply device for supplying potted seedlings arranged in a matrix on a seedling tray. The seedling planting device holds a seedling to be transplanted at the tip of a vertically swinging arm. A transplanting mechanism comprising a transplanting cup or the like for transplanting to a field, and a transfer mechanism comprising a seedling removing claw or the like for transferring a pot seedling from the seedling supply device to the transplanting cup, and In some cases, a pair of left and right earth-covering rollers for covering the site where the seedlings were planted in the ridge with the soil cup on the upper surface of the ridge were arranged at the rear of the fuselage.

[0003] The pair of left and right soil covering rollers are generally arranged in an inclined manner so that the lower end of the left and right soil covering rollers is narrow and the upper side is wide so as to sandwich the transplanting portion of the seedling. .

[0004]

However, for example, when excavating a paddy field from which rice has been cut to form a ridge and transplanting a seedling into the ridge, the cut stubble after cutting has a height of about 10 cm from the ridge surface. There is a problem that the stub may be protruded, and the stubble is entangled with a spindle portion of the soil covering roller or the like, thereby causing rotation failure of the soil covering roller.

The present invention has been made in order to solve this problem, and it is an object of the present invention to provide a seedling transplanting machine capable of reliably covering a portion where a seedling has been transplanted without causing rotation failure of the soil covering roller. It is the purpose.

[0006]

According to a first aspect of the present invention, there is provided a seedling transplanter, comprising: The seedlings taken out by a pair of seedling removal nails are transferred to a pair of left and right swinging transplanting cups, and in a seedling transplanter for transplanting to the field, the soil in the field is scraped to the transplanting site of the seedlings. A pair of left and right soil covering rollers are mounted on the body so as to be disposed behind the transplantation site, and a protection plate is provided in front of the soil covering roller at an appropriate height from a field scene.

[0007]

According to the invention having the above construction, even if the stubble protruding from the ridge surface rotates in an inclined manner and comes near the soil covering roller having a small diameter, the stubble stands from the field scene ahead of the soil covering roller. The free end of the stubble can be pushed and bent in the lateral direction of the body running by the protection plate disposed at a position of an appropriate height, so that the stubble is entangled with the support shaft portion and the bearing portion of the earth covering roller. As a result, the soil covering roller can be surely rotated, and the soil can be reliably brought to the transplant site of the seedling.

[0008]

Next, an embodiment of the present invention will be described. 1 is a schematic side view of a two-row planting seedling transplanter, FIG. 2 is a schematic plan view of a two-row planting seedling transplanter, FIG. 3 is an overall rear view, FIG. 4 is a schematic plan view of a transplanting mechanism, and FIG. FIG. 6 is a schematic plan view showing an arrangement relationship between a soil covering roller and a protection plate, and FIG. 7 is a schematic diagram showing an arrangement relationship between a soil covering roller and a protection plate taken along line VII-VII in FIG. FIG. 8 is a side view of the earth covering roller and the protection plate as viewed from the rear of the body. The body 1 having the engine 2 and the transmission case 9 has:
The main frame 3 is supported by a pair of front and rear horizontally long slide frames 4 and 5 so as to be slidable left and right. Hydraulic cylinder 6 and swing arm 7 provided on main frame 3
The body 1 is configured to be able to change its position in the horizontal direction along the slide frames 4 and 5 through the above. Front wheels 12, 12 are mounted on a pair of axle frames 13, 13 extending rearward from both left and right sides of the main frame 3, respectively. The drive horizontal shaft case 10, which extends laterally on the rear side of the main frame 3, is provided at both ends. Transmission case 11, 1
The rear wheels 8, 8 are mounted via the
Is transmitted to the rear wheels 8,8.

The front and rear wheels 12, 8 are configured to be able to move up and down and swing through a swing shaft 15 and a swing hydraulic cylinder 14 in the main frame 3, so that the body 1 can be moved relative to a running road surface or a ridge surface M. The height can be changed (the ground height can be adjusted).

A rearwardly extending handle 26 is provided at the upper end of the chassis frame 17 provided to extend to the rear of the body 3.
The seedling supply device 16 is provided so that the seedling mounting table 21 is reciprocally movable left and right with respect to the chassis frame 17.

The seedling mounting table 21 is configured to reciprocate left and right via a lateral feed mechanism described later.
The seedling tray 22 having the seedling pot portions 22a arranged in a matrix in the front-rear and left-right directions in the advancing direction in a plan view is placed on the seedling pot portion 22a. At the end, the seedling pot portion 22a is moved by 1 in the forward direction of the body 1.
The vertical feed is intermittently performed at every pitch.

The seedling planting devices 18a and 18b as a pair of right and left seedling planting mechanisms are provided between the right and left rear wheels 8, 8 on the transmission case 9 via a transmission case 19 (FIG. 4). reference).

As shown in FIG. 2, the seedling planting apparatuses 18a and 18b hold a swinging arm 31 that swings up and down and a pot seedling N to be transplanted at the tip of the swinging arm 31, and transplant the seedling N to a field. And a transfer mechanism 29 including a seedling extraction claw 23 for transferring the seedling pot 22a of the seedling tray 22 in the seedling supply device 22 to the transplanting cup 32. The power is transmitted to the seedling supply device 16 and the transfer mechanism 29 from the transmission case 9 through a transmission path via a chain wound around a chain sprocket.

As shown in FIGS. 4 and 12, the two seedling take-out claws 23 and the two transplanting cups 32 are arranged side by side with the left and right seedling trays 22 on one seedling mounting table 21 at regular intervals. By synchronizing the phases, two rows of seedlings are taken from one seedling tray 22 and two rows of seedlings are transplanted to the ridge M. Then, the multi-film covering the ridge surface M can be cut by the multi-cutter 24 for each transplanted portion before the transplanting of the seedling by the transplanting cup 32.

In order to repress the ridge surface M behind the seedling transplanting site, in the case of two-row planting, as shown in FIG. 3, FIG. 4, and FIG. A first covering roller 20a disposed at an odd-numbered section and an even-numbered section) and a second covering roller 20b disposed at an outer side in the width direction of the body 1 (a section sandwiching the odd-numbered section and the even-numbered section from the outside). Are provided so as to sandwich the seedling transplantation lines N1 and N2, respectively. In this case, in each of the seedling transplanting strips N1 and N2, the first soil cover roller 20a and the second soil cover roller 20b are set in an inclined shape in rear view so that the interval at the lower end side is narrow and the interval at the upper end side is wide. Is done. for that reason,
As shown in FIGS. 6 and 7, a lower frame 92a, 92a on both the left and right sides of a roller frame 92 having a downward U-shape in rear view is attached to a main frame 91 fixed to the chassis frame 17 at the rear lower surface of the body 1. Are provided so as to be movable up and down, and downward arm portions 92 on both left and right sides of the roller frame 92
a, the axle 94 is fixed to the mounting brackets 93, 93 projecting from the center of the fuselage 1 in the width direction so as to be inclined upward toward the center in the width direction of the fuselage 1, and the second axle 94 is fixed to each axle 94. The earth covering roller 20b is rotatably mounted via a bearing. At the rear end of the common mounting bracket 95 projecting rearward from the left and right center of the roller frame 92, a common axle 96 having an upwardly facing "U" -shaped rear view in which bearings are disposed at both left and right end portions is fixed. , The common axle 96
Two first soil covering rollers 20a, 20a
Are rotatably mounted in an inclined manner such that the arrangement interval on the upper end side is narrowed.

The left and right mounting brackets 93,
An arm 97b that protrudes forward outside the second cover soil roller 20b is fixed to 93, and a second protection plate 98b is fixedly disposed at the tip (front end) of each arm 97b.
The second protective plate 98b is arranged such that the lower edge of the second protective plate 98b is located at a position on the front surface side of the second covering roller 20b and at an appropriate height from the ridge surface M. Similarly, the common mounting bracket 9
5, the arm 97a is projected, and the first protection plate 98a is fixed to the front end of the arm 97a. A pair of first soil covering rollers 2
The first protective plate 98a is arranged at a position on the front surface side of 0a and 20a and at an appropriate height from the ridge surface M so that the lower end edge thereof comes.

Therefore, digging up the paddy field to make a ridge,
When transplanting vegetable seedlings to this, the rice stump (cutting stump) 120 protruding from the ridge surface is inclined by the first soil covering roller 20.
a and the axle 94 (common axle 96) of the first soiling roller 20a (the second earthing roller 20b) and the bearing portion at which the tip of the stump (cutting stock) 120 rotates when standing in front of the second soiling roller 20b. And the like, hindering the rotation of each covering roller, so that the first protection plate 98a and the second protection plate 9
At 8b, the tip of the stump (cutting stump) 120 can be reliably deviated in advance from the location of the first covering roller 20a (second covering roller 20b) (FIGS. 7 and 8).
reference).

Reference numeral 99 shown in FIGS. 6 and 7 denotes an elevation control mechanism which can change the height position of the earth covering roller 20a and the second earth covering roller 20b together with the roller frame 92. Further, it is preferable that the width dimension of the first covering roller 20a is formed to be smaller than the width dimension of the second covering roller 20b.

Next, the structure of the transplanting mechanism 30 in the seedling planting apparatuses 18a and 18b will be described with reference to FIGS. At both ends of a PTO shaft 9 a as an output shaft protruding from the side surface of the transmission case 9, a proximal chain sprocket in the planting transmission case 19 of the transplantation mechanism 30 is attached, and a free end side rotation shaft 36 of the planting transmission case 19 is attached to the rotation shaft 36. The chain 38 is wound around the fitted chain sprocket to transmit power.

The rotating shaft 3 is mounted on the left and right flanges 34a, 34b on the free end side of the planting transmission case 19.
The mounting shaft 37 of each rotary case 40 is connected to both ends of 6 via ball-type universal joints 35 so that the mounting shaft 37 becomes inclined upward as it goes outward from the body 1 with respect to the horizontal. In each rotary case 40, an intermediate gear 41 that meshes with a sun gear 39 that rotates integrally with the mounting shaft 37 and a planetary gear 42 that meshes with the intermediate gear 41 are rotatably supported in the rotary case 40. Further, the planetary gear 42
A crank arm 45 is fixedly mounted on the support shaft 44 to which is mounted, and a tip shaft 46 of the crank arm 45 is rotatably mounted in the middle of the swing arm 31. The swing arm 3
The guide roller 47 at the base end of the first guide rail 4
8 is slidably fitted up and down. As shown in FIG. 12, the pair of left and right guide rails 48, 48 are inclined such that the upper side is closer to the center in the left and right direction of the base end and expands outward toward the lower side when viewed from the front or the rear of the body 1 (implementation). In the example, θ is approximately 6 degrees). Accordingly, a pair of left and right transplanting cups 32, 32 described later is designed so that the width W between the right and left is narrow at the ascending position, and becomes wide when descending to the ridge surface M.

Each of the transplanting cups 32 is a pair of cup bodies 32a, each of which has a substantially conical shape narrowing downward and is halved in front and rear.
The rotation support shafts 49a, 49b fixed to the upper ends of the cup bodies 32a, 32b are pivotally supported by a support plate 50 protruding from one side of the swing arm 31. The two pivoting shafts 49a and 49b are configured to rotate in mutually opposite directions via an X-shaped link mechanism 51 in a side view in which the middle of the two link pieces is pivotally connected with pins. The link mechanism 51 has a pair of cups 32.
The lower ends of the a and 32b are urged by a spring 52 so as to be always closed. The proximal end of the push rod 53 connected to the link mechanism 51 is supported to be able to move forward and backward with respect to the swing arm 31, and the proximal end of the push rod 53 is covered by the distal end shaft 46 of the crank arm 45. It is provided so as to be always in contact with the cam 54 that is fitted and rotates integrally.

With this configuration, when transplanting the seedlings, the rotating shaft 36
When the rotary case 40 is rotated in the direction of arrow A in FIG. 13, the crank arm 45 rotates in the direction of arrow B due to the meshing rotation of the sun gear 39, the intermediate gear 41, and the planetary gear 42. The swing arm 31 connected to the arm moves up and down along the guide rail 48 while swinging back and forth around the guide roller 47,
The transplanting cup 32 moves up and down along the locus 55 (only the upper part is shown) of FIG. 13 and moves from the front position of the seedling tray 22 to the ridge 7. In the transplanting cup 32, the lower ends of the pair of cup bodies 32a and 32b are closed at the upper position, and therefore, the pot seedlings N to be transplanted into the inside thereof.
The posture can be maintained even when the is inserted from above. On the other hand, when the transplanting cup 32 descends and the lower ends of the cup bodies 32 a and 32 b pierce the soil surface of the ridge 7, the pushing rod 53 is pushed out by the cam 54, and the two rotating support shafts 4 are
9a and 49b are rotated in opposite directions to each other, and the cup 3
Since the lower ends of 2a and 32b are open, the inner pot seedling N can be transplanted to the ridge M.

Next, with reference to FIGS. 4, 5, and 9 to 12, the structure of the transfer mechanism 29 including the seedling removal claw 23 and the like will be described. The transfer mechanism 29 takes out the pot seedling N from one pot portion 20a with a pair of left and right seedling removal claws 23, 23 described later, and places the pot seedling N almost immediately above each transplanting cup 32 at the ascending position. Are placed so that the seedlings can be received by the transplanting cups 32 (see FIG. 12).

That is, the output shaft 58 in the planting clutch case 57 operatively connected to the input shaft 56 of the transmission case 9 is provided with a planting clutch 58a, and when the clutch is ON, the chain 59 is pulled from both ends of the output shaft 58. , 59, the chain sprockets 63, 63 of the rotary input shaft 71 in the left and right rotary cases 72 are rotationally driven (see FIG. 9). A support plate 68 is fixed to each bracket 67 fixed to the left and right sides of the traveling body 1, and an input shaft to which power is transmitted from the chain sprocket 63 is provided on an inner periphery of the sun gear 70 fixed to the support plate 68. The input shaft 71 is rotatably fitted, and the other end of the input shaft 71 is fixed to the rotary case 72 so as to rotate integrally (see FIG. 11).

A sun gear 70 is provided in the rotary case 72.
And a planetary gear 75 fixed to the crankshaft 74 and meshing with the intermediate gear 73, and a crank arm 76 attached to the crankshaft 74.
A seedling picking arm 78 having a pair of left and right seedling picking claws 23 mounted on one end thereof is rotatably fitted on a cam shaft 77 protruding from the tip of the camshaft 77. A guide shaft 79 protruding from the other end of the seedling take-out arm 78 is slidably fitted in a substantially arc-shaped guide groove 81 of a guide plate 80 fixed in parallel with the support plate 68, and the input shaft 79. One rotation of the rotary case 72 about the axis 71 causes the pair of seedling removal claws 2 to rotate.
A locus 82 (see FIG. 10) in which the spatula portion 23a of the tip of the seedling removal claw 23, 23 sticks into the seedling pot portion 22a of the seedling tray 22 and pinches the pot seedling N.
Reference).

Then, each seedling removal claw 23 for onion seedlings
Although not shown, a spatula is attached to the tip of a rod-shaped shaft. The spatula has a deformed diamond shape in a front view, the tip (lower end) side is narrowed, and the cross section is an L-shaped obtuse angle. When the seedlings are extracted from the seedling pot portion 22a of the seedling tray 22, the seedling soil is unlikely to collapse.

The pair of left and right seedling removal claws 23, 23
Are fixed to L-shaped pivots 84, 84, and each pivot 84 is rotatably mounted on a spectacle-shaped mounting portion 78 a of the seedling take-out arm 78, and both left and right mounting pieces 83 are provided. , 83 by a spring (not shown),
The tip ends of the pair of left and right seedling removal claws 23 are urged in a direction to always close.

A cam plate 86 is fixed to the cam shaft 77,
On the wide front and back surfaces of the cam plate 86, arc-shaped end cams 87, 87 are protruded in a section of the rotation angle along the circumferential direction, and the bases of the pair of right and left seedling removal claws 23, 23 are formed. When the contact pieces 88, 88, such as spheres, projecting from the end attachment pieces 83, 83 so as to face each other, ride on and contact the end face cam portions 87, 87, the tips of the two seedling extraction claws 23, 23 come into contact with the springs. It is configured to open against the force of.

Next, the seedling supply device 3 will be described with reference to FIGS. 2, 4 to 8 and 10.

The seedling table 21 is, as shown in FIGS.
A frame frame 100 having a substantially rectangular shape in a plan view, a vertical feed case 101 having a vertical feed transmission unit as a vertical feed mechanism disposed on one side of the frame frame 100, and a vertical feed case for feeding the seedling tray 22. It comprises a transport chain 102, large and small chain sprockets 103 (one not shown), a guide frame and the like arranged so that an empty seedling tray 22 is guided toward the rear end of the handle 19.

The front guide rollers 109 mounted on the frame frame 100 of the seedling mounting table 21 are inserted into left and right long U-shaped guide rails fixed to the chassis frame 17 while the rear portion of the frame frame 100 is inserted. The seedling mounting table 21 is mounted movably to the left and right by mounting the downward U-shaped guide rails on sliding contact pieces fixed to the left and right sides of the chassis frame 17.

The seedling tray 22 is made of a soft synthetic resin material having flexibility, and can be bent along the circumference of the large-diameter chain sprocket 103 when being mounted on the transport chain 102 and transported. . The pair of right and left transfer chains 102, 102 are rotatably mounted on a large-diameter chain sprocket 103 mounted on a vertical feed drive shaft 110 driven via a power transmission system in a vertical feed case 101 and a frame frame 100. Around the small diameter chain sprocket of the driven shaft. On the pair of right and left transfer chains 102, 102, laterally engaging pins 112 are protruded at an appropriate pitch P2.
Numeral 12 engages with the lower surface of the continuous portion of the seedling pot portion 22a in the seedling tray 22 which is arranged in the front-rear direction of the transfer, and reliably transfers the seedling in the direction of arrow C in FIG.

A reciprocating feed screw portion is formed on a transverse feed shaft of the transverse feed mechanism protruding from the transmission case.
A feed block with a hull key screwed to the reciprocating feed screw portion is connected to an engagement piece such as an engagement bolt projecting from a frame in the seedling mounting table 21, and the seedling mounting table 21 is moved right and left in the width direction of the seedling tray 22. It is configured to reciprocate.

On the other hand, a vertical feed shaft 118 protruding from the transmission case 114 rotates intermittently at the horizontal feed end position of the seedling mounting table 21 and is provided on the vertical feed shaft 118 at the horizontal feed distance. The pair of kick claws 119, 119 kick and rotate a driven cam (not shown) provided in the vertical feed case,
The vertical feed drive shaft 110 is intermittently rotated via a transmission section in the vertical feed case 101, so that the seedling pot portion 22a is intermittently vertically fed by a fixed pitch.

With this configuration, when the seedling supply device 3 and the seedling planting device 2 are operated while the body 1 is advanced,
The seedling mounting table 21 in the seedling supply device 16 moves rightward or leftward in the traveling direction, and in synchronization with this movement, the seedling tray 2 is moved by the spatula of the pair of seedling removal claws 23 in the transfer mechanism.
The potted seedling N is pinched and extracted from the second seedling pot portion 22a, and the potted seedling N is released into the transplanting cup 32 at the upper end position of the locus 82 in FIG.

In this case, in the case of direct rooted plants, for example, onion seedlings, the roots of the potted seedlings N do not stick very much to the seedbed soil, but the seedling removal claws 23, 23 having a flat spatula tip.
According to this, the pair of spatula portions can pierce the pot portion 22a and securely grasp the root mortar portion, so that the soil of the root mortar portion does not fall apart and is dropped in a correct posture on the lower transplanting cup. It can be inherited, and thus can be transplanted in the correct posture to the field.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a seedling transplanter.

FIG. 2 is a schematic plan view of the seedling transplanter.

FIG. 3 is a schematic rear view of the seedling transplanter.

FIG. 4 is a plan view of a main part of a seedling transplanting unit.

FIG. 5 is a side view of a main part of the inheriting mechanism and the seedling supply device.

FIG. 6 is a schematic plan view of a mounting portion of a soil covering roller.

FIG. 7 is a side view taken along line VII-VII of FIG. 6;

FIG. 8 is a rear view of a main part of a first soil covering roller and a second soil covering roller.

FIG. 9 is a sectional view of a main part of the transfer mechanism.

FIG. 10 is a side view showing a positional relationship among a transfer mechanism, a seedling supply device, and a transplanting cup.

FIG. 11 is an enlarged sectional view of a main part of the transfer mechanism.

FIG. 12 is a sectional view of a main part of the transplantation mechanism.

FIG. 13 is a side view of the implantation mechanism.

[Explanation of symbols]

 Reference Signs List 1 body 8 rear wheel 12 front wheel 16 seedling supply device 18a, 18b seedling planting device 20a first soil covering roller 20b second soil covering roller 21 seedling mounting table 22 seedling tray 22a pot portion 23 seedling removal claw 29 inheriting mechanism 32 transplanting cup 91 main Frame 92 Roller frame 94 Axle 96 Common axle 96 Outer ring 97a, 97b Arm 98a First protection plate 98b Second protection plate 120 Stubble (stump)

Claims (1)

[Claims] 1. A pair of left and right swinging transplanting cups transfers a seedling taken out from a seedling tray of a seedling mounting table by a pair of left and right seedling removal claws to an airframe self-propelled in a field with left and right running wheels. In a seedling transplanter for transplanting to the field,
A pair of left and right soil covering rollers for scraping the soil of the field scene to the transplanting site of the seedlings are mounted on the body so as to be disposed behind the transplanting site, and in front of the soil covering roller, from the field scene. An even-numbered planting seedling transplanter, wherein a protective plate is provided at an appropriate height.