JP2764390B2 - Transplant machine - Google Patents

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 which takes out seedlings from a seedling tray containing a plurality of seedlings and implants them in a field.

[0002]

2. Description of the Related Art Conventionally, in this seed transplanter, a seedling transfer device for transferring a seedling tray accommodating a plurality of seedlings is horizontally arranged rearward at the rear of a running machine. A seedling take-out device is provided at a position where the seedlings are taken out in front of the plant.
Then, while sequentially sending the seedling trays supported by the seedling transfer device forward, one seedling in this seedling tray is taken out by the seedling take-out device, and the taken-out seedlings are configured to be planted in a field, and the seedling transfer device sends the seedlings. The steering operation section of the steering handle is further arranged on the rear side.

[0003]

However, in the conventional transplanter, the seedling transfer device is arranged horizontally rearward at the rear of the body, so that the seedling transfer device is located in front of and behind the transfer device. When the seedling tray support area is increased by forming the length in the direction longer, it is necessary to dispose the steering operation portion of the steering handle disposed further rearward than the seedling transport device further away from the rear. Therefore, there is a problem that the length of the rearward projection of the steering handle with respect to the body becomes longer, and the overall length of the entire transplanter becomes longer.

An object of the present invention is to provide a transplanter that can shorten the overall length of the transplanter while increasing the length of the seedling transport device in the transport direction and increasing the seedling tray support area. Its main purpose.

[0005]

The transplanter according to the present invention comprises:
A steering operation unit arranged in connection with the traveling machine at a rear upper position of the traveling machine supported by the left and right drive wheels, and a seedling that laterally feeds a seedling tray in a width direction of the traveling machine and vertically conveys in a longitudinal direction. In a transplanter equipped with a transport device and a seedling removal device that removes and seeds seedlings from the seedling tray, the seedling transport device is located above the rear side of the drive wheel from the front of the steering operation unit, and has a side surface. The rear portion is inclined so as to be higher toward a position where it does not overlap with the drive wheel when viewed, and the seedling removal device is further disposed at a position above the drive wheel when viewed from the side, and is positioned above the seedling tray. It is characterized in that the seedlings are taken out and planted between the left and right driving wheels.

According to the present invention, the seedlings are taken out and planted above the seedling tray, so that the seedlings can be planted without damaging the seedlings.
That is, while securing the seedling tray mounting area in the front-back direction,
The rearward projecting length of the steering operation unit with respect to the traveling body can be reduced, and the seedling transport device is driven in a side view regardless of the configuration in which the seedling removal device is laterally fed in the width direction of the traveling body. Since it does not overlap with the wheels, the seedling transfer device can be moved laterally over a predetermined length without increasing the distance between the left and right drive wheels, and the entire transplanter can be downsized. In addition, since the seedlings taken out of the seedling tray are planted between the left and right drive wheels, there is no hindrance for the operator to press the steering operation part to perform the turning operation, and the handling of the transplanting machine is easy. Can be done.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of the transplanter shown in FIG. 1, reference numeral 1 denotes a body supported by drive wheels 5, 5.
The body 1 includes a front frame 1a and a transmission case 1
b and the rear frame 1c are integrally assembled, respectively, the engine 2 is mounted on the upper side of the front frame 1a, and the seedling transport device 20 is provided on the rear frame 1c side.
A pair of transmission cases 4, 4 extending rearward and downward, respectively, are provided on both side surfaces in the vehicle width direction of the transmission case 1b so as to support the seedling extraction device 30 and the seedling planting device 110, and to be vertically swingable. The driving wheels 5 are supported on their free ends, respectively.
Is driven by the rotational power transmitted from the transmission case 1b and the transmission cases 4 and 4 so that the traveling body 1 is self-propelled. The rear end of the rear frame 1c has a rearward and upward direction. The steering handle 9 is attached. Also, a steering operation section 9a is provided at the tip of the steering handle 9.
However, as shown in FIG.
It is provided so as to be obliquely upward with respect to.

[0008] In addition, between the plants on the front side of the driving wheels 5 under the traveling machine body 1, between the planting plants of the pot seedlings by the seedling planting device 110 while rolling the upper surface of the ridge A is detected. A detection roller 6 having a switch (not shown) is vertically movably supported via a swing arm 6a, and the seedling transfer device 20 and the seedling removal device are provided by a stock detection signal output from the detection roller 6. 30 and the drive units of the seedling planting device 110 are controlled intermittently.
The planting depth is controlled by the vertical movement of.

Further, a pressure-reducing wheel 7 running along the upper surface of the ridge is supported on a lower front portion of the front frame 1a via a support rod 1d, and the ridge A is provided on both sides of the pressure-reducing wheel 7. A pair of guide wheels 8, 8 running along the side surface are provided.

Also, the rear frame 1c of the traveling body 1
The seedling transfer device 20 that supports the seedling tray 10 in which a plurality of pot seedling storage units 10a are arranged vertically and horizontally is sequentially transferred to the seedling removal side.
Has a seedling removal claw 31 for taking out a potted seedling from the seedling tray 10 at the transfer end portion of the seedling transfer device 20, and a seedling planting device 110 for receiving a seedling from the seedling removal device 30 and performing a transplanting operation. The seedling planting apparatus 110 is supported by the mission case 1b side, and the seedling removal apparatus 30 and the seedling transport apparatus 20 are supported by the rear frame 1c side.

As shown in FIGS. 1 and 4, the seedling removal device 30 is located above the drive wheels 5 and 5 in a side view and between the drive wheels 5 and 5 in a plan view. In addition, the seedling planting device 110 is provided at a position directly below the seedling removing device 30 disposed between the drive wheels 5 and 5 as shown in FIG. It is arranged in between,
As shown in FIG. 1, the seedling transfer device 20 is located near the rear end of the seedling removal device 30, substantially above the rear portion of the drive wheels 5, 5, and at a position not overlapping with the drive wheels 5, 5 in side view. The steering operation portion 9a is directed substantially in the same direction as the direction toward the steering operation portion 9a from the base 9b of the steering handle 9 disposed obliquely upward with respect to the base 9b connected to the rear frame 1c. It is arranged. By arranging the seedling removal device 30 and the seedling planting device 110 in this manner, the seedling transport device 20 can be effectively approached to the drive wheel 5 in a side view, and the length of the seedling transport device 20 in the transport direction can be improved. The length of the seedling tray support area can be increased by increasing the length of the seedling tray. Therefore, the length of the steering handle 9 protruding rearward from the body 1 of the steering handle 9 can be reduced, and the overall length of the entire transplanter can be shortened. You can do it. In addition, the seedling removal apparatus 30 shown in FIG. 1 is disposed on the rear upper side of the drive wheels 5 and 5 in a side view.

As shown in FIGS. 2 and 3, the seedling conveying device 20 includes a pair of support rods 21a, 21a opposed to each other at a predetermined interval, and the support rods 21a, 21a.
21b, 21b and 21 provided at both ends in the length direction
c, 21c, an upper connecting rod 21d connecting the upper parts of the two supporting rods 21a, 21a and a front connecting pipe 21e to form a transport frame 21, and the seedling tray 1 of the transport frame 21 is formed.
The tray receiving portion 22 is provided between the driving sprocket 23 and the driven sprocket 25 on the conveying side of the drive sprocket 23, and a pair of opposing driving sprockets 23, 23 are provided between the front side walls 21b, 21b among the side walls. The drive shaft 24 is rotatably supported for driving, and the rear side walls 21c, 21c
A driven shaft 26 having a pair of opposing driven sprockets 25, 25 interposed therebetween is freely rotatably driven, and the driving sprockets 23, 23 and the driven sprockets 25, 25 are supported.
Drive chains 27, 27 respectively,
The two drive chains 27, 27 are connected between the opposing surfaces of the two drive chains 27, 27, and the seedling tray 10
Transport member 28 forcibly transported by hooking on the seedling storage section 10a
Are provided at predetermined pitch intervals, and
8 so that the seedling tray 10 is forcibly and precisely fed vertically by one pitch. A tray guide 200 is provided on the outer periphery of the driving sprockets 23, 23.

As the transport member 28, as shown in FIG. 2, a connecting shaft provided at both ends with connecting portions for connecting the inner and outer link plates and the rollers of the two drive chains 27, 27 is used. Connect the connecting shaft 28 to the seedling tray 10
The shaft diameter that can be inserted into the concave portion between the seedling storage portions 10a, 10a arranged in the vertical direction is such that it can be hooked on the side wall of the seedling storage portion 10a.

Further, in the embodiment shown in the figure, when the transport frame 21 is supported on the rear frame 1c side, as shown in FIG. Left and right support frames 11, 11 (in the embodiment, the rear frames are also used) projecting outward in the width direction of the machine body 1 are arranged in opposition, and the support frames 11, 11 While the facing width interval is set to be larger than the horizontal moving range of the transport frame 21,
Fixing plates 12, 13 between these two support frames 11, 11
The horizontal shafts 14 and 15 are supported via
15, the horizontal axis 14 indicates the connecting pipe 2 of the transfer frame 21.
1e is slidably inserted, and a support rod 21 is
a, 21a are slidably inserted through cylindrical shafts 29, 29 provided at respective lower portions of the support frames 11, 11a.
It is supported so that it can move laterally in the width direction of the fuselage.

The transfer frame 21 is provided with a seedling removal device 30.
Interlocking rod 99 having a slider 98 provided on the horizontal feed shaft 97
And the intermittent rotation of the transverse feed shaft 97 interlocked with the seedling removal operation of the seedling removal claw 31, and the transfer frame together with the interlocking rod 99 via the slider 98 engaged with the traverse groove of the transverse feed shaft 97. 21, that is, the seedling tray 10 is supported so as to intermittently move laterally one pitch in the horizontal direction of the pot seedling storage unit 10a.

As a driving means of the driving shaft 24 having the driving sprockets 23, 23, a motor M is mainly used. When the transport frame 21 is located at the lateral feed end position in one of the left and right directions, a pair is detected. , And the motor M is intermittently driven by the 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 removal device 30 removes the seedlings by reciprocating the seedling removal claw 31 with respect to the seedling side of the seedling tray 10 at the transfer end portion of the seedling transfer device 20. Claw operating mechanism 3 that swings in the discharging stroke
0A, while reciprocating below the seedling removal position of the seedling tray 10 in synchronization with the removal operation of the seedling removal claw 31 by the claw operating mechanism 30A, the removed seedling of the seedling tray 10 is moved downward through the drain hole 10b. And a seedling pushing-up mechanism 30B having a pin 75 that pushes up the seedling from the seedling removal claw 31 by the interlocking operation of these two mechanisms. The seedlings are held by the seedling removal nails 31 and supplied to the transplanter 113 of the seedling planting device 110 which is released from the seedling removal nails 31 and waits downward at the seedling release position avoiding the seedling transfer device 20. It is made to do.

As shown in FIGS. 5 and 6, the claw operating mechanism 30A has a support member 32 erected on the rear frame 1c and a mounting plate 33 having a support cylinder 34 at the center. A sun gear 35 is fixedly mounted on the outer periphery of the support cylinder 34 of the mounting plate 33, while a drive shaft 36 is penetrated through a through hole of the support cylinder 34 so as to be rotatably supported, and one end of the drive shaft 36. A drive wheel 37 is fitted and fixed to the portion, and a rotor case 38 is fixed to the other end, and the rotor case 38 is connected to the support cylinder 34 via the drive shaft 36 at the same axis as the center of the sun gear 35. It is freely rotatably supported above.

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. PT of case 1b
The driving wheel 37 is driven from an O-shaft 42 via a transmission 43 such as a chain or a timing belt, and the sun gear 35 is rotated while the driving gear 37 rotates to rotate the transmission gear 40 through a planetary gear 39. Is made to revolve. 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
The crank arm 41 is fixed to the protruding end of the rotor arm 38, and a cam shaft 44 is protruded from the free end of the crank arm 41 so as not to rotate. The camshaft 44 has a lateral cam surface 45a of which width is changed on both sides as shown in FIG. 7 at an intermediate portion thereof, and an outer peripheral surface having a radial change on the outer peripheral surface. A cam 45 having a surface 45b is non-rotatably supported, and a base of a claw support member 46 having a seedling removal claw 31 is pivotally mounted on both sides of the cam 45 so as to sandwich the cam 45, while the rear frame is 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 at 1c.
And an engaging body 50 comprising a guide roller movably engaged with the guide groove 48 is provided at a position in the claw support member 46 radially separated from a pivotally attached portion to the crank arm 41, By the movement of the guide roller 50 along the guide groove 48, the movement trajectory of the seedling removal claw 31 is moved from a position where the seedling enters the seedling side of the tray 10 to a position where the seedling is removed from the seedling tray 10. In the process, the seedlings were formed linearly, and were swung during the seedling release process from the removal position to the seedling release position avoiding the seedling transfer device 20, so that the seedling removal claws 31 were positioned at the seedling release position. is there.

The base of the claw support member 46 is provided with
The ball 51 and the ball receiving cylinder 51 are provided on the free end side as shown in FIG.
a pair of L-shaped rocking plates 52 supporting the shaft 5
The swing plates 52, 52 are supported by the springs 54 so as to be opposed to each other by a spring 54 so that the balls 51, 51 and the cam 45 When the cam 45 is rotated by 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 this swinging operation opens and closes a pair of seedling removal claws 31, 31 respectively supported by the swinging plates 52, 52, so that the nail support is performed. When the member 46 is at the seedling release position, the seedling removal claws 31, 3
1 is opened to release seedlings and supply seedlings to the seedling planting apparatus 110.

The pair of seedling picking claws 31, 31 supported by the rocking plates 52, 52 are each formed by sharpening the tip of a small-diameter rod material. On the other hand, a flanged extruding cylinder 55 having an inner peripheral surface capable of being loosely fitted to the outer peripheral surface of the claw 31, 31 is fitted, and a projection 46a is provided on the side of the claw support member 46. As shown in FIGS. 2 and 4, the projecting portion 46a supports the base end of the cam lever 56 so as to swing freely via a pivot shaft 57, and has a pin 58 projecting from its free end. A connecting rod 59 composed of a bullet is supported on the pin 58 via an intermediate winding portion thereof, and
The two free ends of the connecting rod 59 are connected to the flanges of the extruding cylinders 55 provided on the seedling extraction claws 31, respectively.
An intermediate portion of the cam lever 56 rotatably supports a cam roller 60 that comes into contact with an outer peripheral cam surface 45b of the cam 45 of the pawl support member 46. Compression spring 6 interposed between
1 to always contact the outer peripheral cam surface 45b,
The roller 60 is provided on the outer cam surface 45 of the cam 45.
b, the free end of the cam lever 56 is lifted, and the extruding cylinders 55, 55 are moved to the seedling removal claws 31, 31 via the connecting rod 59 connected to the free end.
1 and 31, and the rollers 60
Is engaged with the short-diameter portion of the outer peripheral cam surface 45b at the free end of the cam lever 56 together with the connecting rod 59.
5,55 is pushed down to the tip side of the seedling removal nails 31,31,
At the time of the seedling releasing operation of the seedling removing claws 31, 31,
The seedling is forcibly pushed by pressing the seedling at the tip of 5,55.
It is configured to drop into the zero implanter 113.

As shown in FIGS. 2 and 3, the seedling raising mechanism 30B includes a fixed rod 7 between the fixed plates 13 and 13.
0, the base of the mounting body 72 is mounted on the fixed rod 70, a free end of the mounting body 72 is provided with a top plate 71 having a through hole 71a, and a guide is provided via the top plate 71. Groove 7
3a is fixed to the guide body 73, and the guide body 73 is
A movable body 77 having a guide rod 74 inserted into the guide groove 73a, a pin 75 passing through the through hole 71a, and an engagement shaft 76 is slidably supported along the guide groove 73a, while the movable body 77 The long hole 7 which engages with the engagement shaft 76 of 77
A shaft body 80 to which a first arm 78 and a second arm 79 having a shaft 8a are fixed is attached to the mounting body 72 and the support frame 11
And is rotatably supported between the supporting piece 81 provided at the center. The other end of the drive wheel 37 fitted and fixed to the drive shaft 36 is provided with a connecting shaft 8 integrally connected to the wheel 37.
2 and a first cam body 83 is attached to the extension end of the connecting shaft 82.
And a first member that operates by engaging with the cam body 83.
As shown in FIG. 4, the swinging rod 84 is swingably supported on the support plate 85 of the support frame 11, and the free end of the swinging rod 84 is supported by the second arm 79 via the connecting rod 86. The first and second arms 78 and 78 are connected to the end by the first swinging rod 84 being swung by the rotation of the first cam body 83 to pull up the connecting rod 86 as shown by the arrow in FIG. 79
, The moving body 77 is moved upward, and the pins 75 are pushed up from below through the drain holes 10b on the bottom surface of the seedling tray 10 to push the seedlings to the seedling extraction nail side. In addition, the reciprocating locus of the pin 75 by the seedling raising mechanism 30A and the linear reciprocating locus of the seedling removal claw 31 are positioned in the same linear range. Synchronize with the claws 31 rush,
Moreover, even in the event that the seedling removal claw 31 loses the seedling, the moving stroke of the pin 75 is increased so as to discharge the remaining soil.

As shown in FIG. 6, the connecting shaft 82 is supported through a transverse drive case 87 so that the clutch shaft 88 can be freely rotated by the transverse drive case 87 in parallel with the connecting shaft 82. On the other hand, a gear wheel 90 integrally provided with a clutch operation cam 89 is supported on the connection shaft 82 so as not to rotate.

A clutch pinion 91 having a predetermined speed increase ratio with respect to the gear wheel 90 is meshed with the gear wheel 90, and the pinion 91 is supported on the clutch shaft 88 so as to freely rotate. .

The clutch shaft 88 supports a clutch body 92 adjacent to the clutch pinion 91 so as not to rotate relative to the clutch shaft 88. The outer peripheral surface of the clutch body 92 and the clutch pinion 91 Then, a spring clutch 93 having one end engaged with the clutch body 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 members 91 and 92 together. In order to transmit power, the open end of the spring clutch 93 and the gear wheel 90
A tentacle 94 which is engaged with the cam 89 is provided between the cam and the cam 89, and the tip of the tentacle 94 is engaged with the disengaged end of the spring clutch 93 to thereby provide the spring clutch. The clutch pinion 91 is idled with respect to the clutch shaft 88 by relaxing the tightened state of 93, so that the transmission of power is intermittently interrupted. The other end of the clutch shaft 88 protrudes outward from the lateral feed drive case 87, and the protruding end supports an intermediate gear 95 so as not to rotate relatively, and a driven gear 96 meshed with the intermediate gear 95. Is fixed to one end of a traverse shaft 97 having a traverse groove (not shown) rotatably supported by the traverse 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 rods 99 by the connecting rods 99 moving in the lateral direction via the sliders 98 engaging with the traverse grooves (not shown) of the lateral feed shaft 97. The transporting device 20 is configured to intermittently feed one pitch in the horizontal direction of the seedling tray 10 set in the seedling transporting device 20 in interlocking with the seedling extracting operation of the seedling extracting nail 31.

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

As shown in FIG. 9, the stop means 100 is provided with an engagement hole at a position concentric with each drive sprocket 23, 23 at an equal angle in accordance with one pitch interval of the seedling tray 10. A lock device 10 having lock pins 101, 101 which are provided on the support frame 1c at positions lateral to the drive sprockets 23, 23 so as to be able to retreat into the engagement holes 23a, 23a.
2, the lock pin 101 is inserted into the engagement hole 23a during the rotation of the drive sprockets 23, 23 by the motor M, thereby vertically feeding the seedling tray 10 by one pitch in the vertical direction. The rotation of the driving sprockets 23 is forcibly stopped at the set positions.

In this case, as in the case of the seedling raising mechanism 30B, the locking device 102 is provided on the connecting shaft 82 with an interlocking mechanism comprising a second cam body 103, a second swinging rod 104, and a connecting rod 105. The lock pin 101 is moved from the unlocked position to the locked position in conjunction with the seedling ending operation, and is moved from the locked position to the unlocked position in conjunction with the seedling fetching operation in conjunction with the seedling ending operation. A detection switch S is provided for turning the lock pin 101 on when the lock pin 101 is unlocked, and is turned on when the transport frame 21 is located at one of the lateral feed end positions in the left-right direction. Limit switches L1 and L
2 so that the motor M is driven only when the detection switch S and either one of the limit switches L1 or L2 are turned on, and the drive sprockets 23, 23 are driven via the drive shaft 34. Rotate seedling tray 1
0 in the longitudinal direction and the driving sprocket 2
At the timing when the seedling tray 10 is longitudinally fed by about one pitch by the rotation of the drive sprockets 33 and 23, the lock pin 101 is pushed into the engagement hole 23a of the drive sprocket 33 from the unlocked position, whereby the detection switch S Is turned off and the motor M is stopped, and at the same time, the rotation of the drive sprocket 23 is forcibly stopped.

With this configuration, it is possible to eliminate the inertial rotation of the drive sprockets 23, 23 due to the stop of the motor M, and to prevent the shift of the stop position of the seedling tray 10 due to the inertial rotation. Can be forcibly positioned at an appropriate position corresponding to the position where the seedling removal nail 31 is removed. In order to enable the stopping means 100 to be used even when a plurality of seedling trays 10 are selected and used, as shown in FIG.
An engaging hole 23b is provided at a position on the concentric circle having a diameter different from that of the concentric circle 3a at an equal angle in accordance with one pitch interval of another seedling tray 10, while a lock pin 101 is provided on the lock device 102. Are the engagement holes 23a or 23b
Lock pin 101 so that it can selectively enter
Entry position changing means (not shown) may be provided.

Further, the seedling planting apparatus 110 includes a planting transmission case 111 attached to the rear side of the transmission case 1b, and a planting arm 112 which is linked to the planting transmission case 111 in accordance with its internal mechanism. An openable / closable transplanter 113 supported so as to be capable of planting in the vertical direction. The transplanter 113 is moved by the movement of the planting arm 112 to the receiving position of the pot seedling released from the seedling removal nail 31 and the ridge A. When the planting operation is performed with a predetermined vertical movement locus over the range of the transplanting position and the seedling removal claw 31 releases the pot seedling, the pot seedling is moved to the raised position with the transplanter 113 closed, that is, the receiving position. After receiving and receiving the pot seedlings, the transplanter 113 is moved down to the ridge A side, the transplanter 113 is opened at this lowering position, and the pot seedling held inside is moved to the ridge A side. So that transplant.

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

In the seedling extracting device 30, the drive wheel 37 on which the transmission 43 is mounted is driven together with the drive shaft 36, and the drive shaft 36 drives the rotor case 38 to drive the drive shaft 3
6 and rotate together. Thereby, as shown in FIG. 6, the planet gear 39 rotatably supported by the rotor case 38 revolves while meshing with the sun gear 35 while rotating.

Then, the transmission gear 40 meshing with the planetary gear 35 revolves around the outer peripheral path K of the sun gear 35 without meshing with the sun gear 35 while rotating in conjunction with the planetary gear 39. As the transmission gear 40 rotates, 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 shown in FIG. The claw support member 46 linearly moves along the linear guide portion 48a of the cam groove 48 in accordance with this movement. When the crank arm 41 reaches the position 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 pawl support member 46 supported by the cam shaft 44
However, it swings toward the seedling release position. Further, when the guide roller 50 moves back along the cam groove 48 from the above state, the crank arm 41 returns to the original position A with a trajectory completely symmetric to the forward trajectory, and the next reciprocating motion Is started, and the pawl support member 46 makes one reciprocation in the cam groove 48 while the transmission gear 40 revolves once around the outer peripheral path K of the sun gear 35.

Thus, at the advancing position of the nail supporting member 46, the seedling extracting nail 31 is linearly inserted into the extracted seedling of the seedling tray 10, and is synchronized with the pushing operation of the seedling extracting nail 31. The seedling raising mechanism 30B allows the pin 75
Is pushed up from below through the drain hole 10b on the bottom surface of the seedling tray 10 to push the seedling to the seedling extraction nail side. In other words, the first swinging rod 84 swings in the direction of the arrow shown in FIG. 2 via the first cam body 83 in synchronization with the rushing operation of the seedling removal claw 31, and this swinging causes the connecting rod 86 is FIG.
The first and second arms 78, 7 are pulled up as indicated by arrows.
9, the moving body 77 is moved upward,
Is pushed up from below through the drain hole 10b on the bottom surface of the seedling tray 10 to push the seedling to the seedling extraction nail side. As a result, the seedling removal nails 31 are reliably pushed into the seedlings, and at the same time, the removed seedlings are forcibly pushed out from the seedling tray 10, so that the seedlings can be reliably removed by the seedling removal nails 31. It is. Further, the seedling removal claw 31 linearly reciprocates in the seedling removal process of removing the seedlings from the seedling tray 10 from the entry position of the seedling tray 10 by the linear guide mechanism. The reciprocating movement of the pin 75 by the seedling raising mechanism 30B is also performed linearly in the same linear range as the linear reciprocating locus of the seedling extracting nail 31, so that when the seedling extracting nail 31 enters the seedling, the seedling soil is removed. The seedlings can be rushed in without being deformed.
The seedlings can be taken out without disturbing the posture of the seedlings with respect to the seedlings, whereby the seedlings can be taken out smoothly by the seedling take-out nails 31 and the posture of the taken-out seedlings can be stably taken out.

A pair of rocking plates 52, 52 supported by the pawl support member 46 via shafts 53, 53 so as to be rockable.
Are opposed to the urging force of the spring 54 in accordance with a change in the state of engagement between the balls 51, 51 of the rocking plates 52, 52 and the side cam surface 45a of the cam 45 fixed to the cam shaft 44. It swings in an opposing manner. When it enters the seedling tray, it enters the seedling soil with the space between the seedling extraction claws 31, 31 supported by the rocking plates 52, 52 opened, and when it leaves the seedling tray 10, While closing the seedling removal claws 31 and 31 and retreating with the seedling soil in between, the seedling removal nails 3
The seedlings are released by opening and releasing the plants 1, 31.

Further, at the time of releasing the seedlings, the cam lever 56 supported by the projection 46a of the claw support member 46 is moved by the cam roller 60 of the lever 56 and the outer cam surface 4 of the cam 45.
5b, the rocking plate 52 is engaged with the outer peripheral surface of the short diameter portion.
The compression spring 61 interposed between the pressing rod 55 and the pushing cylinder 55 swings downward.
The extruding cylinders 55, 55 fitted to the claws 31, 31 are attached to the claws 31, 3.
By pushing down the seedlings, the release operation of the seedlings held by the claws 31 is forcibly promoted, and the falling of the seedlings is improved.

After the seedlings are released, the cam rollers 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 conveying device 20, but a flat belt or a ladder belt may be used.

[0039]

According to the transplanter of the present invention, the seedlings are taken out and planted on the upper side of the seedling tray, so that the seedlings can be planted without damaging the seedlings, and the length of the seedling transporting device in the vertical transport direction. In other words, while ensuring the seedling tray mounting area in the front-rear direction, the length of the rearward projection of the steering operation unit with respect to the traveling machine can be reduced, and the seedling removal device is laterally fed in the width direction of the traveling machine. Regardless of the configuration, the seedling transport device does not overlap with the drive wheels in side view, so that the seedling transport device can be moved laterally over a predetermined length without widening the interval between the left and right drive wheels, The entire transplanter can be downsized. In addition, since the seedlings taken out of the seedling tray are planted between the left and right drive wheels, there is no hindrance for the operator to press the steering operation part and perform the turning operation, and the operation handling of the transplanting machine is improved. Easy to do.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional view of the seedling removal device and the seedling transport device.

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

FIG. 4 is a plan view showing the seedling removal device and the seedling transport device in a direction necessary for understanding.

FIG. 5 is a side view of a claw operation mechanism in the seedling removal device.

FIG. 6 is a cross-sectional view developed and shown in a necessary direction for understanding a main part of the seedling removal device.

FIG. 7 is an explanatory view of the seedling removal nail.

FIG. 8 is an explanatory diagram showing a movement locus of the claw support member.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Airframe 5 Drive wheel 20 Seedling conveyance device 30 Seedling removal device 9 Steering handle 9b Steering operation part 9a Base 110 Seedling planting device

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masatoshi Sunasa 1-32 Chaya-cho, Kita-ku, Osaka-shi, Osaka Yanmar Agricultural Machinery Co., Ltd. (56) References JP-A-4-187014 (JP, A) Showa 61-148110 (JP, U) Showa 57-22282 (JP, B2)

Claims (1)

(57) [Claims] 1. A steering operation unit disposed in a rear upper position of a traveling body supported by left and right drive wheels in connection with the traveling body,
The seedling tray is laterally fed in the width direction of the traveling machine, and a seedling transfer device that vertically transfers the seedling in the front-rear direction, and a transplanter that includes a seedling removal device that picks up and seeds a seedling from the seedling tray.
The seedling transporting device is disposed above the rear side of the drive wheel from the front of the steering operation unit, and is inclinedly disposed so that a rear portion thereof becomes higher toward a position where the drive wheel does not overlap with the drive wheel in a side view. The seedling removal device is disposed at a position above the drive wheel in a side view, takes out the seedling above the seedling tray, and is configured to be planted between the left and right drive wheels. Transplanting machine.