JPH08224012A - Transplanter - Google Patents

Abstract

PURPOSE: To shorten the total length of the whole transplanter while lengthening the length of a seedling transporting device in the longitudinal direction and enlarging a seedling tray supporting area. CONSTITUTION: This transplanter is equipped with a maneuvering handle 9 comprising a maneuvering and operating part 9a laid slantingly above a base part 9b connected to a machine body 1 and a seedling transporting device 20 for laterally and longitudinally sending a seedling tray for taking out seedlings by a seedling taking out device 30 in the width direction of the machine body at the rear part of the machine body 1. The seedling transporting device 20 is installed approximately in the same direction as that from the base part 9b of the maneuvering handle 9 toward the maneuvering and operating part 9a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanter, and more particularly to a transplanter for taking out seedlings from a seedling tray containing a plurality of seedlings and planting them in a field.

[0002]

2. Description of the Related Art Heretofore, in this seed transplanter, a seedling transporting device for transporting a seedling tray containing a plurality of seedlings is horizontally arranged rearward at the rear part of a running machine. A seedling take-out device is installed at the front part of the plant.
Then, while sequentially sending the seedling tray supported by the seedling transporting device forward, one seedling in this seedling tray is taken out by the seedling taking-out device, and the taken-out seedling is configured to be planted in the field. Further, the steering operation section of the steering handle is arranged further rearward.

[0003]

However, in the conventional transplanter, since the seedling transfer device is horizontally arranged rearward at the rear part of the machine body, the seedling transfer device is provided in front and rear of the transfer device. If the seedling tray support area is increased by increasing the length in the direction, it is necessary to dispose the steering operation part of the steering handle, which is arranged further rearward than the seedling carrier, further rearward. Therefore, there is a problem that the rearward protruding length of the steering handle with respect to the machine body becomes long and the entire length of the transplanting machine becomes long.

The present invention provides a transplanter capable of shortening the entire length of the transplanter while increasing the seedling tray supporting area by increasing the length of the seedling transfer device in the transfer direction. Its main purpose.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a steering operation section 9a at the rear of the machine body 1 as shown in FIG. Steering handle 9 disposed obliquely upward with respect to the base portion 9b on the connection side to the
And a seedling transfer device 20 for laterally feeding the seedling tray in the width direction of the machine and for vertically transferring the seedling tray. The seedling transfer device 20 is oriented in the direction from the base portion 9b of the steering handle 9 toward the steering operation portion 9a. 〞Is arranged in the same direction.

[0006]

In the invention according to claim 1, in the seedling carrier device 20, the steering operation part 9a is connected to the machine body 1 on the side base 9b.
The base portion 9b of the steering handle 9 disposed obliquely upward with respect to
Since it is arranged substantially in the same direction as the direction from the steering control section 9a to the steering operation section 9a, the length of the seedling carrier device 20 in the carrying direction can be increased to increase the seedling tray support area. The rearward projecting length of the steering operation section 9a of the seedling carrier 20 and the steering handle 9 with respect to the machine body 1 can be shortened, and the entire length of the transplanting machine can be shortened.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION In the embodiment of the transplanting machine shown in FIG. 1, 1 is a traveling machine body, and this traveling machine body 1 comprises a front frame 1a, a mission case 1b, and a rear frame 1.
c is integrally assembled to each other, the engine 2 is mounted on the upper side of the front frame 1a, and the seedling carrier device 20, the seedling removing device 30, and the rear frame 1c side are provided.
While supporting the seedling planting device 110, a pair of transmission cases 4 and 4 extending downward and rearward are provided on both side surfaces of the mission case 1b in the vehicle width direction so as to be vertically swingable, and the free end side thereof is provided. Drive wheels 5 and 5 are respectively supported by the drive wheels 5 and 5 by the rotational power transmitted from the engine 2 via the transmission case 1b and the transmission cases 4 and 4 to drive the traveling machine body 1 by itself. The steering handle 9 is attached to the rear end of the rear frame 1c toward the upper rear side. Further, a steering operation portion 9a is provided at a tip end portion of the steering handle 9 so as to be obliquely upward with respect to a base portion 9b on the side of the rear frame 1c.

[0008] Further, on the front side of the drive wheel 5 at the lower part of the traveling machine body 1, the inter-strain detection for detecting the inter-planting plant of the pot seedling by the seedling planting device 110 while rolling on the upper surface of the ridge A. A detection roller 6 having a switch (not shown) is supported movably up and down via a swing arm 6a, and the seedling transfer device 20 and the seedling take-out device are operated by an inter-plant detection signal output from the detection roller 6. 30 and each drive unit of the seedling planting device 110 are intermittently controlled, and the detection roller 6
The planting depth is controlled by the vertical movement of.

Further, a compression wheel 7 running along the upper surface of the ridge is supported on the lower front portion of the front frame 1a through a supporting rod 1d, and the ridges A are formed on both sides of the compression wheel 7. A pair of guide wheels 8, 8 running along the side surface is provided.

Further, the rear frame 1c of the traveling machine body 1
The seedling transfer device 20 supported on the side is for sequentially transferring the seedling trays 10 in which a plurality of pot seedling storage portions 10a are arranged vertically and horizontally to the seedling extraction side, and the seedling extraction device 30
Has a seedling take-out claw 31 for taking out pot seedlings from the seedling tray 10 at the transporting end portion of the seedling feeding device 20, and the seedling planting device 110 receives the seedlings from the seedling taking device 30 and carries out planting operation. The seedling planting device 110 is supported on the mission case 1b side, and the seedling extracting device 30 and the seedling transporting device 20 are supported on the rear frame 1c side.

As shown in FIG. 1, the seedling transfer device 20 has a steering operation section 9a from a base portion 9b of a steering handle 9 disposed obliquely upward with respect to a base portion 9b on the side of a rear frame 1c. It is arranged in a direction substantially the same as the direction toward the steering operation section 9a. By arranging the seedling carrier device 20 in this manner, it is possible to increase the length of the seedling carrier device 20 in the carrying direction and increase the seedling tray support area.
The rearward projecting length of the steering operation section 9a of the seedling carrier 20 and the steering handle 9 with respect to the machine body 1 can be shortened, and the entire length of the transplanting machine can be shortened.

The seedling transfer device 20 includes a pair of support rods 21a, 21a facing each other at a predetermined interval as shown in FIGS. 2 and 3, and these support rods 21a, 21a.
Side walls 21b, 21b and 21 provided at both ends in the length direction of the
c, 21c, an upper connecting rod 21d for connecting the upper portions of the supporting rods 21a, 21a, and a front connecting pipe 21e are formed to form a carrying frame 21, and the seedling tray 1 of the carrying frame 21 is formed.
On the transport side of 0, a tray receiving portion 22 is provided between the drive sprocket 23 and the driven sprocket 25, and a pair of opposing drive sprockets 23, 23 is provided between the front side walls 21b, 21b among the side walls. The drive shaft 24 is rotatably supported by the drive shaft 24, and the rear side walls 21c, 21c
A driven shaft 26 having a pair of driven sprockets 25, 25 opposed to each other is rotatably supported by the driven shaft 26, and the drive sprockets 23, 23 and the driven sprockets 25, 25 are supported.
While the drive chains 27, 27 are respectively hung on and,
The drive chains 27, 27 are connected between the facing surfaces of the drive chains 27, 27, and the seedling tray 10 is provided.
Transport member 28 for forcibly transporting by catching on the seedling accommodation section 10a of
A large number of the above-mentioned conveying members 2 are provided at a predetermined pitch.
8, the seedling tray 10 is configured to be forcibly vertically fed by one pitch. A tray guide 200 is provided on the outer circumference of the drive sprockets 23, 23.

Further, as the conveying member 28, as shown in FIG. 2, a connecting shaft having connecting portions for connecting the inner and outer link plates of the both drive chains 27 and the rollers to each other is used. The connecting shaft 28 is connected to the seedling tray 10
The shaft diameter that can be inserted into the recess between the seedling accommodating portions 10a arranged in the vertical direction is formed so as to be hooked on the side wall of the seedling accommodating portion 10a.

Further, in the embodiment shown in the drawings, when supporting the carrier frame 21 to the rear frame 1c side, as shown in FIG. 4, at the mounting position of the seedling carrier device 20 in the rear frame 1c of the machine body 1, The left and right support frames 11 and 11 (in the embodiment, which are also used as the rear frames) projecting outward in the width direction of the machine body 1 are arranged so as to face each other, and both support frames 11 and 11 are arranged. While making the facing width interval larger than the lateral feed movement range of the transport frame 21,
Fixing plates 12, 13 are provided between the two support frames 11, 11.
The horizontal shafts 14 and 15 are supported via the
A horizontal pipe 14 of the connecting pipe 2 of the conveying frame 21
1e is slidably inserted, and the support rod 21 is attached to the horizontal shaft 15.
The cylindrical shafts 29, 29 provided at the lower portions of the a, 21a are slidably inserted to move the carrier frame 21 to the support frames 11, 11 respectively.
It is supported so that it can move laterally in the machine width direction.

The transfer frame 21 is provided with a seedling take-out device 30.
Interlocking rod 99 having a slider 98 provided on the lateral feed shaft 97
Supported by the interlocking rod 99 via the slider 98 that engages with the traverse groove of the lateral feed shaft 97 by intermittent rotation of the lateral feed shaft 97 that is interlocked with the seedling take-out operation of the seedling take-out pawl 31. 21, that is, the seedling tray 10 is supported so as to intermittently laterally move laterally by one pitch in the lateral direction of the pot seedling accommodation portion 10a.

A motor M is mainly used as a drive means of the drive shaft 24 having the drive sprockets 23, 23, and a pair of which detects when the transport frame 21 is located at any one of the left and right lateral feed end positions. Of the limit switches L1 and L2, and the motor M is intermittently driven by a detection signal from one of the limit switches to vertically feed the seedling tray 10 by one pitch in the vertical direction. .

On the other hand, the seedling taking-out device 30 takes out the seedlings by reciprocally moving the seedling taking-out claws 31 with respect to the seedling side of the seedling tray 10 at the transporting end portion of the seedling feeding device 20, and Claw operating mechanism 3 that swings in the discharging process
0A is provided, while reciprocatingly moves below the seedling take-out position of the seedling tray 10 in synchronization with the taking-out operation of the seedling take-out nail 31 by the nail operating mechanism 30A, the taken-out seedlings of the seedling tray 10 are moved downward through the drainage holes 10b. A seedling pushing-up mechanism 30B having a pin 75 that pushes up the seedlings from the seedling tray 10 by the interlocking operation of these two mechanisms, and at the same time from the taking-out stroke to the discharging stroke. The seedlings are held by the seedling take-out nails 31 and are supplied to the transplanter 113 of the seedling planting device 110 which is released from the seedling take-out nails 31 and waits downward at a seedling release position where the seedling transfer device 20 is avoided. It's done as you would.

In the pawl operating mechanism 30A, as shown in FIGS. 5 and 6, a supporting member 32 is erected on the rear frame 1c, and a mounting plate 33 having a supporting cylinder 34 at the center is attached to the supporting member 32. While fixing and fixing the sun gear 35 on the outer periphery of the support cylinder 34 of the mounting plate 33, the drive shaft 36 is pierced through the through hole of the support cylinder 34 and rotatably supported, and one end of the drive shaft 36 is fixed. A drive wheel 37 is fitted and fixed to the other portion, and a rotor case 38 is fixed to the other end, and the rotor case 38 is attached to the support cylinder 34 via the drive shaft 36 and has the same axis as the center of the sun gear 35. It is supported by the drive and rotation freely.

Inside the rotor case 38, a planetary gear 39 meshing with the sun gear 35 is rotatably supported, and a transmission gear 40 meshing with the planetary gear 39 is rotatably supported, while the mission is carried out. Case 1b PT
The drive wheel 37 is driven from the O shaft 42 via a transmission body 43 such as a chain or a timing belt, and the rotation of the drive wheel 37 causes the transmission gear 40 to rotate on its own axis via a planetary gear 39 while the sun gear 35 is rotated. The outer peripheral locus K of is revolved. In this case, the gear ratio between the sun gear 35 and the transmission gear 40 is 2: 1.

The support shaft 40a of the transmission gear 40
Is protruded to the outside of the rotor case 38, the crank arm 41 is fixed to the protruding end, and the cam shaft 44 is non-rotatably provided at the free end of the crank arm 41. This camshaft 44 has a side cam surface 45a having a changed width dimension on both side surfaces as shown in FIG. 7 at its intermediate portion, and an outer peripheral cam having an outer peripheral surface having a radial change. A cam 45 having a surface 45b is non-rotatably supported, and a base of a claw support member 46 having seedling picking claws 31 is pivotally attached to both sides of the cam 45 while sandwiching the cam 45, while the rear frame is provided. A guide body 49 provided with a guide groove 48 having a linear guide portion 48a and a swing guide portion 48b via a support member 47 in 1c.
And an engaging body 50 composed of a guide roller that is movably engaged with the guide groove 48 is provided at a position radially separated from the pivotal attachment portion of the claw support member 46 to the crank arm 41, The movement of the guide roller 50 along the guide groove 48 causes the movement path of the seedling pick-up claws 31 to reach the picking-up position where the seedlings are picked up from the seedling tray 10 from the plunging position where the seedlings are projected into the seedling side of the tray 10. Since it is configured to be linear in the process, and is rocked in the seedling discharging process from the taking-out position to the seedling discharging position avoiding the seedling transporting device 20, the seedling taking-out claw 31 is configured to be positioned at the seedling discharging position. is there.

The base of the pawl support member 46 is shown in FIG.
On the free end side, as shown in FIG.
a pair of L-shaped swing plates 52, 52 supporting a
The oscillating plates 52, 52 are oscillatably supported by fulcrums 3, 3, and the oscillating plates 52, 52 are tensioned by springs 54 so as to face each other. When the cam 45 rotates by the engagement with the side cam surface 45a formed on the side surface, the swing plates 52, 5
2 swings symmetrically in the left-right direction, and by this swinging operation, a pair of seedling picking claws 31, 31 respectively supported by the swinging plates 52, 52 are opened and closed. When the member 46 is in the seedling releasing position, the seedling extracting claws 31 and 3 are
1 is opened to release the seedlings and supply the seedlings to the seedling planting device 110.

Therefore, the pair of seedling pick-up claws 31, 31 supported on the swing plates 52, 52 are formed by sharply forming the tips of thin rods, and the seedling pick-up claws 31, 31 are respectively formed. The flanged push-out cylinders 55, 55 having an inner peripheral surface that can be loosely fitted to the outer peripheral surfaces of the pawls 31, 31 are fitted therein, while a protrusion 46a is provided on the side of the pawl support member 46. As shown in FIGS. 2 and 4, the base portion of the cam lever 56 is swingably supported by the protruding portion 46a via the pivot shaft 57, and the pin 58 is projectingly provided at the free end portion thereof. A connecting rod 59 made of an elastic wire is supported on the pin 58 via an intermediate winding portion, and
While connecting both free ends of the connecting rod 59 to the collars of the extruding cylinders 55, 55 provided on the seedling extracting claws 31, 31, respectively,
A cam roller 60, which is in contact with the outer peripheral cam surface 45b of the cam 45 of the claw support member 46, is rotatably supported at an intermediate portion of the cam lever 56, and the roller 60 is connected to the push-out cylinder 55 and the swing plate 52. Compression spring 6 interposed between
1 is always brought into contact with the outer peripheral cam surface 45b,
The roller 60 is the outer peripheral cam surface 45 of the cam 45.
When engaging with the long diameter part of b, the free end of the cam lever 56 is lifted, and the push-out cylinders 55, 55 are attached to the seedling extracting claws 31, 31 via the connecting rod 59 connected to the free end.
The rollers 60 are made to retreat to the base side of 1, 31 and
Is engaged with the short-diameter portion of the outer peripheral cam surface 45b, the free end of the cam lever 56 together with the connecting rod 59 together with the pushing cylinder 5
Push down 5,55 to the tip side of the seedling pick-up claws 31,31,
When the seedling take-out claws 31, 31 are released, the push-out cylinder 5
The seedling planting device 11 is pressed by pressing the seedlings with the tips of 5, 55.
It is designed to be dropped into the transplanter 113 of 0.

Further, the seedling thrusting mechanism 30B has a fixing rod 7 between the fixing plates 13 and 13 as shown in FIGS.
0 is installed, the base portion of the mounting body 72 is mounted on the fixed rod 70, a top plate portion 71 having a through hole 71a is provided at the free end portion of the mounting body 72, and a guide is provided via the top plate portion 71. Groove 7
The guide body 73 having 3a is fixed, and the guide body 73 is
A movable body 77 having a guide rod 74 inserted into the guide groove 73a, a pin 75 penetrating the through hole 71a, and an engaging shaft 76 is slidably supported along the guide groove 73a, while the movable body is supported. Long hole 7 that engages with engagement shaft 76 of 77
The shaft body 80 having the first arm 78 and the second arm 79 fixed thereto is attached to the mounting body 72 and the support frame 11.
It is rotatably supported between itself and a supporting piece 81 provided on the. Then, on the other side of the drive wheel 37 that is fitted and fixed to the drive shaft 36, the connecting shaft 8 integrally connected to the wheel 37 is provided.
2 is extended, and the first cam body 83 is attached to the extended end of the connecting shaft 82.
Is provided and is engaged with the cam body 83 to operate.
As shown in FIG. 4, the swing rod 84 is swingably supported by the support plate 85 of the support frame 11, and the free end portion of the swing rod 84 is connected to the free end of the second arm 79 via the connecting rod 86. The first and second arms 78, 78 are connected to the end portions, and the connecting rod 86 is pulled up as shown by the arrow in FIG. 2 by the swing of the first swing rod 84 by the rotation of the first cam body 83. 79
The moving body 77 is moved upward through the pin 75 and the pin 75 is pushed up from below through the drainage hole 10b in the bottom surface of the seedling tray 10 to push the seedling toward the seedling extracting nail side. Further, the reciprocating locus of the pin 75 by the seedling thrusting mechanism 30A and the linear reciprocating locus of the seedling take-out pawl 31 are positioned in the same straight line range, and the push-up timing of the pin 75 is Synchronize with the time when the nail 31 rushes in,
In addition, even if the seedling take-out nail 31 misses the seedling, a large stroke of movement of the pin 75 is taken so as to discharge the residual soil.

Further, as shown in FIG. 6, the connecting shaft 82 is pierced and supported by a lateral feed drive case 87, and a clutch shaft 88 is freely rotatable in the lateral feed drive case 87 in parallel with the connecting shaft 82. While supporting, a gear wheel 90 integrally provided with a clutch operating cam 89 is non-rotatably supported on the connecting shaft 82.

A clutch pinion 91 having a predetermined speed increasing ratio is meshed with the gear wheel 90, and the pinion 91 is supported by the clutch shaft 88 in a freely rotatable manner. .

A clutch barrel 92 adjacent to the clutch pinion 91 is supported on the clutch shaft 88 so as not to rotate relative to the clutch shaft 88, and an outer peripheral surface of the clutch barrel 92 and the clutch pinion 91 is supported. Then, a spring clutch 93 having one end locked to the clutch barrel 92 and the other end opened is fitted, and the inner peripheral surface of the spring clutch 93 simultaneously binds the outer peripheral surfaces of the two 91, 92 together. The power transmission is performed, and the open end of the spring clutch 93 and the gear wheel 90 are connected.
Is provided with a cam 89 provided side by side with the cam 89, and a tip 94 of the tip of the tip 94 is engaged with a release end of the spring clutch 93. By loosening the tightly bound state of 93, the clutch pinion 91 idles with respect to the clutch shaft 88 to intermittently interrupt the transmission of power. Then, the other end of the clutch shaft 88 is projected to the outside of the lateral feed drive case 87, and the intermediate gear 95 is supported by the projecting end so as not to be able to rotate relative to the driven gear 96, which meshes with the intermediate gear 95. Is fixed to one end of a lateral feed shaft 97 having a traverse groove (not shown) rotatably supported by the lateral feed drive case 87 so as not to rotate relative to the shaft 97. Then, as shown in FIG. 4, the seedlings supported by the connecting rod 99 by the connecting rod 99 moving laterally via a slider 98 engaging with a traverse groove (not shown) of the lateral feed shaft 97. The carrying device 20 is configured to intermittently laterally feed one lateral pitch of the seedling tray 10 set in the seedling carrying device 20 in association with the seedling taking-out operation of the seedling taking-out claws 31.

Further, in the embodiment shown in the drawing, a stop means 100 for forcibly stopping the rotation of the drive sprockets 23, 23 by the motor M is provided.

As the stopping means 100, as shown in FIG. 9, engaging holes are provided at concentric positions of the drive sprockets 23, 23 at equal intervals according to one pitch of the seedling tray 10. Locking device 10 having lock pins 101, 101 which are provided on support frame 1c and which can be freely retracted and retracted into and from engaging holes 23a, 23a at a side position with respect to each drive sprocket 23, 23 while providing 23a respectively.
2 is provided and the lock pin 101 is inserted into the engaging hole 23a during the driving rotation of the drive sprockets 23, 23 by the motor M, so that the seedling tray 10 is vertically fed by one pitch. The rotation of the drive sprockets 23, 23 is forcibly stopped at this position.

In this case, the locking device 102 is an interlocking mechanism including the second cam body 103, the second swinging rod 104, and the connecting rod 105 on the connecting shaft 82 as in the case of the seedling thrusting mechanism 30B. The lock pin 101 is moved from the unlocked position to the locked position in conjunction with the seedling harvesting end operation, and from the lock position to the unlocked position in conjunction with the seedling harvesting operation start operation. A detection switch S is provided which is turned on when the lock pin 101 is in the unlocked state while being moved, and is turned on when the conveyance frame 21 is located at any one of the lateral feed end positions in the left and right directions to detect this. Limit switches L1 and L
2 in parallel with each other, the motor M is driven only when the detection switch S and one of the limit switches L1 and L2 are turned on, and the drive sprockets 23 and 23 are connected via the drive shaft 34. Rotate and seedling tray 1
0 in the vertical direction, and the drive sprocket 2
When the seedling tray 10 is vertically fed by about 1 pitch due to the rotation by 3, 23, the lock pin 101 is pushed into the engagement hole 23a of the drive sprocket 33 from the unlocked position, so that the detection switch S Is turned off to stop the motor M, and at the same time, the rotation of the drive sprocket 23 is forcibly stopped.

With this configuration, the inertial rotation of the drive sprockets 23, 23 with respect to the stop of the motor M can be eliminated, and the shift of the stop position of the seedling tray 10 due to the inertial rotation can be prevented, whereby the seedling tray 10 can be prevented. It is possible to forcibly position the seedling accommodation section 10a at an appropriate position corresponding to the extraction position of the seedling extraction claw 31. In order to apply the stopping means 100 even when a plurality of seedling trays 10 are selected and used, as shown in FIG. 9, the engaging holes 2 of the drive sprockets 23, 23 are used.
Engaging holes 23b are respectively provided at concentric circles having different diameters from the concentric circles 3a at equal pitches according to one pitch interval of another seedling tray 10, while the lock pin 101 is provided on the lock device 102. Is the engagement hole 23a or 23b
Lock pin 101 to allow selective entry
Entry position changing means (not shown) may be provided.

Further, the seedling planting device 110 is provided with a planting transmission case 111 attached to the rear side of the mission case 1b and a planting arm 112 interlocked with the planting transmission case 111 with its internal mechanism. It comprises a transplanter 113 that can be opened and closed and is supported so as to be planted vertically, and the transplanter 113 is moved to the receiving position of the pot seedlings discharged from the seedling take-out nail 31 and the ridge A by the movement of the planting arm 112. When the seedling take-out claws 31 release the pot seedlings, the potting seedlings are moved to the rising position with the transplanter 113 closed, that is, at the receiving position. After receiving and receiving this pot seedling, the transplanter 113 is moved downward to the side of the ridge A, the transplanter 113 is opened at this downward position, and the pot seedling held inside is held in the ridge A. So that transplant.

Next, the operation of the transplanter according to the present invention will be described.

In the seedling take-out device 30, the drive wheel 37 on which the transmission body 43 is hung is driven together with the drive shaft 36, and the drive of the drive shaft 36 causes the rotor case 38 to move into the drive shaft 3.
It rotates together with 6. As a result, as shown in FIG. 6, the planet gear 39 rotatably supported by the rotor case 38 meshes with the sun gear 35 and revolves while rotating on its axis.

Then, the transmission gear 40 meshing with the planet gear 35 revolves around the outer peripheral locus K of the sun gear 35 without meshing with the sun gear 35 while rotating in association with the planet gear 39. With the rotation of the transmission gear 40, the crank arm 41 fixed to the support shaft 40a of the transmission gear 40 rotates integrally with the transmission gear 40 as shown in FIG. At this time, the guide roller 50 provided on the claw support member 46 engages with the cam groove 48 of the guide body 49, and the crank arm 41 moves from the position a to the position e shown in FIG. The pawl support member 46 linearly moves forward along the linear guide portion 48a of the cam groove 48 in accordance with this movement. Then, when the crank arm 41 reaches the position of E in FIG. 8, the guide roller 50 provided on the claw support member 46 reaches the end Z of the swing guide groove 48b via the bent portion of the cam groove 48. Yes,
At this time, the claw support member 46 supported by the cam shaft 44
, But swings toward the seedling release position. Further, when the guide roller 50 moves back in the cam groove 48 from the above state, the crank arm 41 draws a completely symmetrical locus with the forward locus and returns to the original position a and the next reciprocating motion. That is, the pawl support member 46 reciprocates one time in the cam groove 48 while the transmission gear 40 revolves once around the outer peripheral locus K of the sun gear 35.

Therefore, the seedling take-out claws 31 can be linearly inserted into the picked-up seedlings of the seedling tray 10 at the advanced position of the claw support member 46. In synchronization with the plunging operation of the seedling take-out claws 31. , The pin 75 by the seedling thrust mechanism 30B
Is pushed up from below through the drainage hole 10b on the bottom surface of the seedling tray 10 to push the seedling to the seedling take-out nail side. That is, the first swing rod 84 swings in the direction of the arrow shown in FIG. 2 via the first cam body 83 in synchronization with the plunging operation of the seedling take-out pawl 31, and the swing causes the connecting rod to move. 86 is FIG.
Pulled up as indicated by the arrow, the first and second arms 78, 7
The moving body 77 is moved upward via 9 to move the pin 75
Is pushed up from below through the drainage hole 10b on the bottom surface of the seedling tray 10 to push the seedling to the seedling take-out nail side. As a result, the seedling take-out nails 31 are surely rushed into the seedlings, and at the same time, the taken-out seedlings are forcibly pushed out from the seedling tray 10, and the seedling take-out nails 31 can be taken out reliably. Of. Further, the seedling take-out claws 31 linearly reciprocate in the seedling take-out process of taking out the seedlings from the seedling tray 10 from the plunge position where the seedling tray 10 plunges into the seedling side by the linear guide mechanism. The reciprocating movement of the pin 75 by the seedling thrusting mechanism 30B is also performed linearly in the same straight line range as the straight line reciprocating locus of the seedling take-out nail 31, so when the seedling take-out nail 31 plunges into the seedling, the seedling soil is removed. Since the seedlings taken out by the pin 75 are pushed up to the seedling taking-out nail side, the seedling taking-out nails 31 can be pushed in without being deformed.
The seedlings can be taken out without disturbing the posture, and thus the seedlings can be taken out smoothly by the seedling taking-out nails 31 and the taken-out seedlings can be stably taken out with certainty.

Further, a pair of swing plates 52, 52 which are swingably supported by the claw support member 46 via shafts 53, 53.
Is against the biasing force of the spring 54 in response to a change in the engagement state between the balls 51, 51 of the swing plates 52, 52 and the side cam surface 45a of the cam 45 fixed to the cam shaft 44. Since they oscillate in a facing manner, when plunging into the seedling tray, they plunge into the seedling soil with the space between the seedling ejection claws 31, 31 supported by the swing plates 52, 52 open, and when leaving the seedling tray 10. While the seedling take-out claws 31, 31 are closed and the seedling soil is sandwiched between the seedling take-out claws 31 and 31 to exit, when the seedling take-out claws 3 are located at the seedling release position,
The seedlings are released by opening and releasing the plants 1, 31.

Further, at the time of releasing the seedling, the cam lever 56 supported by the projecting portion 46a of the claw support member 46 has the cam roller 60 of the lever 56 and the outer peripheral cam surface 4 of the cam 45.
By engaging with the outer peripheral surface of the short diameter portion of 5b, the rocking plate 52
It swings downward by the compression spring 61 interposed between the pushing rod 55 and the extruding cylinder 55, and as a result, the seedling take-out pawl 3 through the connecting rod 59.
The push-out cylinders 55, 55 fitted over the claws 1, 31 are attached to the claws 31, 3, respectively.
1 is pushed down to the tip side to forcibly promote the releasing operation of the seedlings held by the claws 31, 31 to make the seedlings fall well.

After releasing the seedlings, the cam roller 60
As the cam 45 rotates, it engages with the outer peripheral surface of the long diameter portion of the cam 45 to lift the cam lever 56 and retreat the pushing cylinders 55, 55 toward the base side of the seedling extraction claws 31, 31, so that There is no problem in the process of removing the seedlings.

In the above description, the chains 27, 27 are used for the vertical feeding of the seedling carrier 20, but a flat belt or a ladder belt may be used.

[Brief description of drawings]

FIG. 1 is a side view showing an example of a transplanter of the present invention.

FIG. 2 is a vertical cross-sectional view of the seedling take-out device and the seedling carrier device portion.

FIG. 3 is a perspective view of the seedling extracting device.

FIG. 4 is a plan view showing the seedling take-out device and the seedling carrier device in a necessary direction for understanding.

FIG. 5 is a side view of a claw operating mechanism in the seedling extracting device.

FIG. 6 is a transverse cross-sectional view showing the essential part of the seedling take-out device by developing it in a necessary direction.

FIG. 7 is an explanatory view of the seedling taking-out nail.

FIG. 8 is an explanatory view showing a movement trajectory of the claw support member.

FIG. 9 is an explanatory view showing the stopping means.

[Explanation of symbols]

 1 Aircraft 20 Seedling Conveying Device 30 Seedling Extracting Device 9 Steering Handle 9b Steering Operation Unit 9a Base

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Masatoshi Hisa Inside Yanma Agricultural Machinery Co., Ltd. 1-32 Chayacho, Kita-ku, Osaka-shi, Osaka

Claims (1)

[Claims] 1. A steering operation section (9) is provided at a rear portion of the airframe (1).
A steering handle (9) a) is arranged diagonally above the base side (9b) continuously connected to the machine body (1), and a seedling carrier device that laterally feeds the seedling tray in the machine width direction and vertically conveys it. (2
0), and the seedling transfer device (20) is arranged substantially in the same direction as the direction from the base (9b) of the steering handle (9) to the steering operation part (9a). Transplanter characterized by.