JPH09275719A - Transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transplanter capable of lightening and improved in planting accuracy and suitable for vegetable seedlings of lettuce, cabbage, etc., by supporting a planting device and a seedling feed device by a frame fixed to a traveling machine body. SOLUTION: This transplanter is equipped with a traveling machine body 2 having wheels 9 and 10 on both right and left sides and traveling while stepping over a ridge 5, a planting device 35 for planting seedlings in the ridge 5 and a seedling feeder 36 for feeding seedlings to the planting device 35, and both of the planting device 35 and the seedling feeder 36 are supported by a fixed frame 34 to the traveling machine body 2. Furthermore, a first detection member 49 for grounding on the upper face of ridge 5 and detecting the unevenness is provided behind the planting device 35 and a second detection member 50 is installed in the front of the planting device 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanting machine for sequentially transplanting vegetable seedlings such as lettuce and cabbage into ridges while running.

[0002]

[Prior art] Pot seedlings for vegetables (soil block seedlings)
In the transplanter for the field to transplant, a traveling machine body having wheels on both left and right sides and traveling across the ridge, and a planting device having a planting cup that moves up and down to plant seedlings in the ridge, There is a plant equipped with a seedling supply device for supplying seedlings to the planting device, and a movable frame having a front part pivotally mounted about a left-right axis is provided at the rear part of the traveling machine body and the movable frame is provided on the movable frame. The planting device is supported, a fixed frame is provided at the rear of the traveling machine body, and the seedling feeding device is supported by the fixed frame.

[0003]

In the above-mentioned conventional apparatus, the planting device and the seedling feeding device are supported by separate frames, and one frame is fixed to the traveling machine body, Since the other frame is movable, when feeding the soil block seedlings from the seedling feeding device to the planting cup of the planting device, a relative positional deviation easily occurs between the planting cup and the seedling feeding device. However, due to this misalignment, problems such as misplacement of seedling delivery timing and falling of soil block seedlings during seedling delivery occurred, and reliable seedling delivery was difficult. Moreover, since it is necessary to provide two frames, a fixed frame and a movable frame, on the traveling machine body, the weight of the entire transplanter becomes heavy, which makes it difficult to handle the transplanter, and a high-torque engine or the like is required for traveling. It was something I needed.

In view of the above problems, the present invention has been made in view of the above problems.
It is an object of the present invention to provide a transplanter capable of reliably delivering seedlings from a seedling supply device to a planting device and reducing the weight.

[0005]

The present invention takes the following technical means in order to achieve the above object. That is,
A traveling machine body 2 which has wheels 9 and 10 on both left and right sides and runs across the ridges 5, a planting device 35 for planting seedlings in the ridges 5, and a seedling supply device 36 for supplying seedlings to the planting device 35. With and
The planting device 35 and the seedling supply device 36 are both supported by a frame 34 fixed to the traveling machine body 2, whereby both the planting device 35 and the seedling supply device are traveling machine body 2. Since it is supported by a fixed frame, the relative position between the planting device 35 and the seedling supply device 36 is always constant when the seedlings are delivered from the seedling supply device 36 to the planting device 35, so that the seedling delivery is ensured. Can be possible. Further, the traveling machine body 2 may be provided with one fixed frame to support both the planting device 35 and the seedling supply device 36, and thus the weight of the transplanter can be reduced.

Further, according to the present invention, the wheels 9 and 10 are provided so as to be vertically movable relative to the traveling machine body 2 so as to move the traveling machine body 2 up and down by following the unevenness of the ridge 5.
1 to detect the unevenness by grounding on the upper surface of the ridge 5 behind 5
Detecting member 49 is provided and is supported on the traveling machine body 2 side so as to move up and down following the unevenness of the upper surface of the ridge 5, and the unevenness is detected by grounding on the upper surface of the ridge 5 also in front of the planting device 35. The second detection member 50 is arranged and supported on the traveling machine body 2 side so as to move up and down following the irregularities on the upper surface of the ridge 5.
The first detecting member 49 and the second detecting member 50 are connected by an interlocking device 63 so as to move up and down in conjunction with each other.
By detecting the ridge height with 9, 50 and moving the traveling machine body 2 up and down to a predetermined height, both the planting device 35 and the seedling supply device 36 supported by the fixed frame 34 also move up and down to a predetermined height. Since the seedling planting depth by the planting device 35 can be made constant, and the first and second detection members 49, 50 are arranged in front of and behind the planting device 35, the two are interlocked,
Near the entrance of the ridge, the front side second detecting member 50 detects the ridge height and the traveling machine body 2 is moved up and down to a predetermined height even if the rear side first detecting member 49 is not on the upper surface of the ridge 5. The second detection member 5 on the front side near the exit of the ridge.
Even if 0 is dislocated from the upper surface of the ridge 5, the first detection member 49 can detect the ridge height and move the traveling machine body 2 up and down to a predetermined height. It becomes possible to plant seedlings.

Then, according to the present invention, the first detecting member 4 is provided.
At least one of 9 and the second detection member 50 is characterized in that the detection sensitivity of the unevenness on the upper surface of the ridge 5 is adjustable so that the state of the upper surface of the ridge 5 (the degree of unevenness of the ridge and the ridge The detection sensitivity can be freely adjusted depending on the hardness, etc., and good seedling can be planted. Further, the present invention is characterized in that the interlocking means 63 is provided with a buffer means 64 to allow a height difference between the first detection member 49 and the second detection member 50, whereby the ridge 5 is provided. Even if one of the detection members moves up and down in small steps due to the unevenness of the upper surface, the buffering means 64 absorbs the movement of the one detection member to allow the height difference from the other detection member, and the travel machine body 2 can be moved in small steps. The vertical movement can be prevented and stable seedling planting can be achieved.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, the vegetable transplanter 1 is
It is a walking type having a transplanting device 3 and a steering handle 4 behind the traveling machine body 2 and runs a longitudinal direction across the ridges 5 while planting soil block seedlings in the ridges 5 at predetermined longitudinal intervals. It is a thing.

The advancing direction of the transplanting machine 1 is called the front-back direction, and the lateral direction orthogonal to the advancing direction is called the left-right direction. The traveling machine body 2 is mainly configured by mounting and fixing a pedestal 7 on the front part of the transmission case 6 in a forward projecting manner, and mounting an engine 8 and the like on the pedestal 7, and front and rear wheels 9 and rear wheels 1 provided on both left and right sides.
It is supported so that it can run.

The power of the engine 8 is input to a power transmission mechanism in the mission case 6, and the power input in the mission case 6 is transmitted to a wheel transmission shaft 11 protruding to the left and right sides via a speed change mechanism or the like. At the same time, it can be taken out from the PTO shaft 12 that is provided behind the wheel transmission shaft 11 and projects to the left and right. As shown in FIGS. 1 and 3, the front wheel support frame 14 is provided at the front of the gantry 7.
Is fixed to the front wheel support frame 14. A support cylinder 15 arranged in the left and right direction is fixed to the front wheel support frame 14. A pair of left and right front wheel support shafts 16 are inserted into the left and right shafts so as to protrude outward in the left and right direction. It is rotatably supported around it.

A mounting cylinder 17 is externally fitted and fixed to each of the left and right front wheel support shafts 16, an upper end side of a support arm 18 is connected and fixed to each mounting cylinder 17, and a front wheel 9 is left and right on a lower end side of each support arm 18. It is mounted so that it can rotate around its axis. In addition,
A guide wheel 19 is attached to the front wheel support frame 14 and rolls in contact with the upper side surface of the ridge 5.

Support cylinders 20 on which the wheel transmission shafts 11 are fitted are fixedly attached to the left and right sides of the transmission case 6, and the upper parts of the transmission cases 21 are rotatably supported around the wheel transmission shafts 11 on the respective support cylinders 20. Has been done. The rear wheel 10 is rotatably supported around the left and right shafts in the lower portion of the transmission case 21, and power is transmitted from the wheel transmission shaft 11 to the rear wheel 10 via a transmission mechanism in the transmission case 21 to rear wheel 10. Is driven to rotate.

A tubular body 22 in the left-right direction is movably supported in the front-rear direction at the front-rear intermediate portion of the pedestal 7, and in front of the tubular body 22, an elevating cylinder 23 constituted by a hydraulic cylinder and fixed to the pedestal 7. Is arranged, and the piston rod of the cylinder 23 is connected to the tubular body 22, and the tubular body 22 can be moved back and forth by the withdrawal and retraction of the piston rod.

As shown in FIG. 4, the movable shaft 24 is inserted into the cylindrical body 22 so as to project to the left and right sides, and the brackets 25 project from the left and right projecting portions of the movable shaft 24. 25 and the left and right front wheel support shafts 16 are connected by a pair of left and right front connecting rods 27L, 27R, and the left and right brackets 26 and the left and right transmission cases 21 are interlockingly connected by a pair of left and right rear connecting rods 28L, 28R. .

An elevating control valve 32 for controlling the elevating cylinder 23 is fixed on the mission case 6, and when the piston rod of the elevating cylinder 23 is projected by the operation of the elevating control valve 32, the movable shaft 24 is moved. Is moved backward and the left and right rear connecting rods 28L and 28R are pushed rearward, and the left and right front connecting rods 27L and 27R are pulled backward, so that the left and right front and rear wheels 9 and 10 are simultaneously lowered, and the lifting cylinder is lifted. When the piston rod 23 is retracted, the movable shaft 2
4 is moved forward and left and right rear connecting rods 28L, 28R
Is pulled forward and the left and right front connecting rods 27L,
When 27R is pushed forward, the left and right front and rear wheels 9 and 10 are simultaneously raised, and the front and rear wheels 9 and 10 are moved up and down relative to the traveling machine body 2 by the lifting control valve 32 corresponding to the unevenness of the ridge 5. The traveling machine body 2 is moved up and down to adjust the distance between the transplanting device 3 and the upper surface of the ridge 5.

A rolling cylinder 29, which is a hydraulic cylinder located in front of the movable shaft 24, is mounted and fixed to the cylindrical body 22 via a support frame fixed to the gantry 7, and the piston rod of the cylinder 29 has a movable shaft. 24 is pivotally connected to a bracket 31 fixed to the rolling cylinder 2
When the piston rod 9 is projected, the movable shaft 24 is rotated, the left front connecting rod 27L is pushed forward and the left rear connecting rod 28L is pulled forward, and the left front wheels 9 and 10 are pulled forward. Moves upward, while the right front connecting rod 2
7R is pulled rearward and the right rear connecting rod 28
R is pushed backwards, the right and left front wheels 9, 10 move downward,
Further, when the piston rod of the rolling cylinder 29 is retracted, the operation reverse to the above is performed, and the rolling control valve 33 causes the mission case 6, the gantry 7, the engine 8, the transplantation device 3, and the like to be leveled even on a sloping ground. It is possible to maintain the condition.

The transplanting device 3 is provided on a transplantation frame 34 mounted and fixed to the rear of the traveling machine body 2, and the seedling ridges 5
The main constitution is provided with a planting device 35 to be planted on the plant, a seedling feeding device 36 for feeding seedlings to the planting device 35, and a perforating means 38 for forming a planting hole in the mulch film covering the ridges 5. Has been done. The transplant frame 34 has a pair of left and right main frame members 34A whose front portion is attached and fixed to the rear portion of the mission case 6.
And a connecting member 3 for connecting the rear end sides of the main frame members 34A to each other.
9B and 9B to form a substantially rectangular frame shape, and the steering handle 4 is extended rearward and is integrally fixed to the rear portion of the transplantation frame 34.

As shown in FIG. 2, the planting device 35 includes a planting cup 41 for planting seedlings in the ridges 5, and this planting cup 41.
And a swing link mechanism 42 for swingably supporting up and down. The swing link mechanism 42 includes a first parallel link 43 pivotally supported by the transplantation frame 34 so as to swing back and forth through the bracket 40, and the first parallel link 43.
A swing plate 44 pivotally connected to the lower end of the second parallel link 45 pivotally connected to the swing plate 44 so as to swing up and down. The planting cup 41 is pivotally connected.

The upper side link of the second parallel link 45 is pivotally connected to a crank arm 47a fixed to a lateral drive shaft 47 pivotally supported by a support piece 46 projecting downward from the implant frame 34, and the drive shaft 47 is a first-hanging transmission body 48
Is connected to the PTO shaft 12 through the drive shaft 47 by the power from the PTO shaft 12 to rotate in the direction shown by the arrow B in FIG.
While 45 swings and the planting cup 41 swings up and down, it also swings back and forth.

The planting cup 41 is provided with an opener that can be opened and closed at the bottom, and the opener opens forward and backward when the projecting cup 41 rushes into the ridge 5 at the lower end of the locus of the planting cup 41, and the ridge 5 is planted. A planting cup is formed in the planting hole while forming the planting hole
The seedlings held in 1 can be planted. The piercing means 38 is composed of a gas burner or the like, and is vertically movably attached to and supported by the transplantation frame 34 via a parallel link interlockingly connected to the drive shaft 47. The rotation of the drive shaft 47 causes the elevating means 38 to move up and down. By pressing the heating element provided at the lower end of the perforation means 38 against the mulch film, a hole for transplantation is formed in the mulch film.

The seedling feeding device 36 is disposed above and rearward of the transplantation frame 34 and has a seedling tray feeding device 67 for intermittently feeding vertically and horizontally a seedling tray 66 which accommodates a large number of soil block seedlings vertically and horizontally. The seedling dispenser 68 is arranged on the front side of the feeder 67 and takes out the seedlings one by one from the seedling tray 66 and conveys them to the planting cup 41.

The seedling tray 66 is made of plastic, is thin and has flexibility, and is provided with a large number of pot portions 66a arranged in a grid pattern vertically and horizontally at a predetermined pitch.
The opening edge portions of the pot portion 66a are connected to each other in a planar shape. Then, soil block seedlings are grown by filling the pot portion 66a with bed soil and sowing the seeds and raising seedlings.

The seedling feeding device 68 is arranged from the PTO shaft 12 to the first
A swing motion mechanism 70 is further provided, in which power is transmitted from the drive shaft 47 to which power is transmitted via the winding transmission body 48 and is further transmitted via the second winding transmission body 69 to be driven.
0 is supported and fixed to the transplantation frame 34, and the rocking motion mechanism 70 supports the seedling extraction nail 71. This seedling take-out claw 71 pierces the lower side of the block soil in the pot portion 66a from an oblique front direction, moves forward while slightly moving upward, pulls out the seedling from the pot portion 66a, and thereafter puts the seedling in a substantially vertical posture. Move downward while changing the posture to release the seedlings at the lower end position of the movement locus, drop and supply to the planting cup 41 located at the upper end of the movement locus of the planting cup, and then reciprocate to return to the original position. Is configured.

As shown in FIGS. 1 and 2, the seedling tray feeding device 67 includes a guide rail 73 fixed to the transplantation frame 34 and the handle 4, and the seedling tray 66 is loaded on the guide rail 73 so as to be movable in the left-right direction. Movable frame 7
4 is provided. Therefore, the planting device 35 described above,
Seedling feeder 68 and seedling feeder 67 of seedling feeder 36
Is a transplantation frame 3 fixed to the traveling body 2 respectively.
4 is attached to and supported by the planting cup 4 of the planting device 35.
(1) There is no relative displacement between the upper end position of the movement locus and the lower end position of the movement locus of the seedling take-out claw 71 of the seedling supply device 36, and the seedling delivery can be ensured. Further, since the planting device 35 and the seedling supplying device 36 are supported by one frame, it is not necessary to provide a separate frame or the like, and the weight of the entire transplanter is reduced.

Further, the seedling tray feeder 67 will be described in detail. The movable frame 74 is configured to be intermittently reciprocated in the left-right direction, and the seedlings are taken out while the movable frame 74 moves in the left-right direction. . Further, the movable frame 74 is provided with a vertical feed mechanism for vertically feeding the seedling tray 66,
When the seedlings have been taken out from the pots 66a arranged in a row in the horizontal direction, the seedling tray 66 is vertically fed by one pitch of the pots 66a.

The movable frame 74 is provided with a support plate 75 for supporting the bottom portion of the seedling tray 66 over the horizontal row of pot portions 66a, and the support plate 75 is fixedly mounted between the left and right side plates 76. A vertical feed drive shaft 77 is arranged in the left-right direction in the lower part between the left and right side plates 76, and a vertical feed driven shaft 78 is arranged in the left-right direction in the upper part between the left and right side plates 76, A pair of left and right drive sprockets 79 are fixed to the vertical feed drive shaft 77, and a pair of left and right driven sprockets 80 are fixed to the driven shaft 78.

An endless chain 81 is hung between the drive sprocket 79 and the driven sprocket 80, and a transport pin that engages with the gap between the pot portions 66a in the vertical direction is mounted on the chain 81. 82 is attached, and the vertical feed drive shaft 77 is rotated in the direction indicated by the arrow A in FIG. 1 so that the seedling tray 66 can be vertically fed.

The carrying pin 82 is connected to the pot portion 66.
Pot portions 66a of several seedling trays 66 with different intervals of a
It is provided at a position matching the pitch between them or the mounting position can be changed. As shown in FIG. 5, between the left and right support members 83 fixed to the handle 4 on both the left and right sides of the movable frame 74, the left and right lateral feed shafts 84 that penetrate the left and right side plates 76 and have endless spiral grooves are provided. A slider 85 having an engaging member that engages with a spiral groove is externally fitted to the lateral feed shaft 84 so as to be rotatable about its axis, and the slider 85 is connected to the movable frame 74.

Power transmitted to the lateral feed shaft 84 from the PTO shaft 12 via the drive shaft 47 and the seedling dispensing device 68 is further transmitted to the right support member 83 via the third winding transmission body 86.
Is transmitted to the power transmission mechanism 87 in the
As a result, the lateral feed shaft 84 is intermittently driven to rotate, and the intermittent rotation drive causes the slider 85 to move left and right, whereby the movable frame 74 is intermittently reciprocated in the left-right direction.

As shown in FIGS. 5 and 6, vertical feed cams 88 are fixed to the left and right sides of the horizontal feed shaft 84, and a vertical feed operation shaft 89 is rotatably supported between the left and right side plates 76 of the movable frame 74. The vertical feed operation shaft 89 is provided with a pair of left and right followers 90 and 91 that engage with the vertical feed cam 88 when the movable frame 74 moves to the leftmost end or the rightmost end.

The followers 90 and 91 are composed of a main follower 90 and an auxiliary follower 91, both of which are engageable with the vertical feed cam 88, although the main follower 90 is fixed with respect to the vertical feed operating shaft 89. On the other hand, the auxiliary follower 91 is the vertical feed operation shaft 8
It is supported so as to be relatively rotatable with respect to 9. Further, the auxiliary follower 91 is elastically connected to the main follower 90 about the axis via a helical spring 92 wound around the vertical feed operation shaft 89.

The left end of the vertical feed operation shaft 89 is the left side plate 7
6 is projected from the first link 93A.
Is fixed, and the second link 93B is attached to the first link 93A.
And a lock release lever 94 having an engagement pin 94a is pivotally attached to the second link 93B. The lock release lever 94 is provided on the left end side of the vertical feed drive shaft 77 protruding from the left side plate 76 of the movable frame 74.
It is fixed to a one-way clutch 95 rotatably supported by 7a. A tension coil spring 98 is engaged with the arm portion 94b of the lock release lever 94, and the lock release lever 94 is urged to rotate in the direction of arrow A in FIG.

Further, the first and second vertical feed gears 9 provided with engaging teeth 96a and 97a on the left end side of the vertical feed drive shaft 77.
6, 97 are arranged side by side in the left-right direction, and the first and second vertical feed gears 96, 97 are supported on the vertical feed drive shaft 77 so as to be rotatable relative to each other about the left-right axis. The vertical feed gears 96 and 97 are linked so as not to rotate relative to each other. The second vertical feed gear 97 can be connected to and disconnected from the vertical feed drive shaft 77 by a clutch device (not shown), and the first and second vertical feed gears 96, 97 are vertically fed by opening and closing the clutch device. Drive shaft 77
And can rotate relative to the axis or integrally. Further, the first and second vertical feed gears 96 and 97 are interlocked with the one-way clutch 95 so as to rotate together with each other only in the vertical feed direction (shown by an arrow A in FIGS. 1 and 6) ( Therefore, it spins in the opposite direction). The engaging teeth 96a of the first vertical feed gear 96 and the engaging teeth 97a of the second vertical feed gear 97 are formed at different pitches.

On the upper front side of the first and second vertical feed gears 96 and 97, first and second ratchet arms 99 and 100 for restricting the rotation of these vertical feed gears 96 and 97 are arranged. . These first and second ratchet arms 99,
100 is the engaging tooth 96 of the corresponding longitudinal feed gear 96, 97.
a and 97a, engaging portions 99a and 100a are engaged, and upper portions of the engaging portions 99a and 100a are pivotally supported by a support shaft 101 provided in the support plate 75 in a horizontal direction so as to be vertically swingable. It is urged to swing downward by 103, and each engaging portion 99a,
100a is the engaging tooth 96 of the first and second vertical feed gears 96, 97
a, 97a.

Further, each ratchet arm 99, 100 is formed with an arcuate engagement surface 99b, 100b which engages with the engagement pin 95a of the lock release lever 95. A selection member 104 is provided near the lower portions of the first and second ratchet arms 99 and 100.
Reference numeral 04 designates either one of the first and second ratchet arms 99, 100, and only the engaging portions 99a, 100a of the selected ratchet arm are engaged with the corresponding longitudinal feed gears 96, 97. The ratchet arms 99, 100 are engaged with the artificial teeth 96a, 97a and are pushed upward against the tension coil springs 102, 103 so that the engaging portions 99a, 100a correspond to the longitudinal feed gears 9.
The engagement teeth 96a and 97a of 6,97 are prevented from engaging. In FIG. 6, the selection member 104
Pushes up the first ratchet arm 99,
The engaging portion 100a of the second ratchet arm 100 is
The state in which the engaging teeth 97a of the vertical feed gear 97 of FIG.

The operation of the intermittent vertical feed mechanism of the seedling tray 66 will be described with reference to FIGS. 6 and 7 in the above-described structure. The horizontal feed shaft 84 is intermittently rotated in the direction of arrow C to move the movable frame 7.
4 is intermittently fed to the left and right, and the vertical feed cam 88 intermittently rotates together with the horizontal feed shaft 84 in the arrow C direction. And
When the movable frame 74 moves to the left and right ends, the main follower 90 engages with the vertical feed cam 88 (see FIG. 7A).
Further, when the horizontal feed shaft 84 rotates, the main follower 90 is pushed by the vertical feed cam 88 in the direction of arrow D in FIGS. 6 and 7 (b), and the main follower 90 moves in the direction of arrow D to move the vertical feed operation. The shaft 89 rotates to pull the second link 93B rearward and upward via the first link 93A, and by this,
The lock release lever 94 rotates together with the one-way clutch 95 around the axis of the vertical feed drive shaft 77 in the direction opposite to the arrow A direction to move the engagement pin 94a rearward, and the engagement pin 94a moves to the second position. Engagement surface 100 of ratchet arm 100 of
By pressing b, the second ratchet arm 100 is pushed up against the tension coil spring 103, and the engaging portion 100a is disengaged from the engaging tooth 97a of the second vertical feed gear 97. At this time, the one-way clutch 95 idles and the first and second vertical feed gears 96 and 97 do not rotate.

At this time, as shown in FIG. 7B, both the main follower 90 and the auxiliary follower 91 are engaged with the vertical feed cam 88, and the main follower 90 and the vertical feed operating shaft 89 are shown by the arrows. While the auxiliary follower 91 rotates in the opposite direction (arrow E) while rotating in the D direction, the main follower 90 and the auxiliary follower 91 rotate around the vertical feed operating shaft 89 by the rotation in the opposite direction. The spring spring 9 moves relative to the
The elastic force in the direction in which the main follower 90 and the auxiliary follower 91 are brought closer to each other is stored in 2.

Further, when the horizontal feed shaft 84 rotates, the push of the main follower 90 in the direction of arrow C by the vertical feed cam 88 is released, and the lock release lever 94 pulls the coil spring 98.
The lever 94 is rotated around the vertical feed drive shaft 77 in the direction of arrow A in FIG. 6 to return to its original position because of being biased by the first feed clutch 95 through the one-way clutch 95. The second vertical feed gears 96, 97 are rotated in the arrow A direction, and the vertical feed drive shaft 77 is rotated in the arrow A direction via the clutch device, while the second ratchet arm 100 is rotated.
Engaging portion 100a of the second vertical feed gear 97
By re-engaging with a, the rotation of the vertical feed drive shaft 77 is restricted.

At this time, the auxiliary follower 91 is further pressed in the direction of the arrow E by the vertical feed cam 88, and the main follower 90 stores the elastic force in the helical spring 9.
2 moves toward the auxiliary follower 91 to rotate the vertical feed operating shaft 89 in the direction of the arrow F (see FIG. 7C), and thus the lock release lever via the first and second links 93A and 93B. Acts to rotate 94 in the direction of arrow A. As a result, in addition to the tension coil spring 98 of the lock release lever 94, the helical spring 92 also causes the lever 94 to return so that the vertical feed gear 97 can be reliably operated.
Also, the vertical feed drive shaft 77 can be fed by one pitch. Therefore, since the vertical feed can be surely performed by adding the twisting spring 92 by slightly reducing the tensile force of the tension coil spring 98, it is not necessary to use a large tension coil spring, and the entire structure of the movable frame 74 is made lightweight. In addition, the vertical feed cam 88 has followers 90, 91.
It is also easy to move the lever 94 by hand, for example, when adjusting the lock release lever 94 in a state where it is not engaged with.

As described above, the seedling tray 21 has the pot portion 2
1a is vertically fed by a distance corresponding to the vertical interval of 1a (1 pitch), then fed left and right, and when the removal of soil block seedlings from the horizontal row of pots 66a is completed, the seedling tray 66 is vertically moved to 1 Pitched. Also, by switching the vertical feed gears 99 and 100 by the selection member, 2
It can be adapted to various kinds of seedling trays 21.

As shown in FIGS. 1 and 2, in the rear and in front of the planting cup 41 of the planting device 35, the first and the first to detect the ridge height by rolling on the upper surface of the ridge 5 by rolling. Two detection rollers (first and second detection members) 49 and 50 are provided.
A pair of left and right first detection rollers 49 on the rear side is provided, and the upper end of the rear support arm 53 is rotated by a left and right support shaft 52 supported by a support bracket 51 protruding downward from the rear side of the transplantation frame 34. A first detection roller 49 is rotatably supported and is rotatably supported by a lower end portion of the rear support arm 53. The first detection roller 49 is vertically swung around the support shaft 52 via the rear support arm 53. It is movably installed.
A front end portion of an operating member 54 is pivotally connected to the support shaft 52, an upper portion of the operating member 54 is connected to the elevating control valve 32 via a rod 55, and a rear portion of the operating member 54 is vertically moved. A large number of locking portions 54a are formed on the
A support rod 56 protruding rearward from the rear support arm 53 of the first detection roller 49 is locked to one of the 4a, and the operating member 54 and the support arm 53 are connected by the support rod 56. .

Therefore, the first detecting roller 49 swings up and down around the support shaft 52 following the unevenness of the ridges 5, and by the vertical swinging of the first detecting roller 49, the operating member also passes through the support rod 56. It swings up and down around the support shaft 52, which causes the rod 5
5 is pushed back and forth to operate the lifting control valve 32. That is, when the first detection roller 49 goes down, the elevating control valve 32 is operated in a direction to raise the traveling machine body 2,
When the detection roller 49 moves up, the raising / lowering control valve 32 is operated in the direction in which the traveling machine body 2 is lowered. It should be noted that by changing the vertical position of the support rod 56 with respect to the locking portion 54a, the first detection roller 4 with respect to the operating member 54 can be moved.
It is possible to change the relative height of 9, thereby changing the neutral height of the traveling body 2 with respect to the ridges 5, and making it possible to adjust the amount of protrusion of the planting cup 41 from the upper surface of the ridges 5, that is, the planting depth. ing.

Further, the rear end side of the operating member 54 is supported by the steering handle 4 side at the rear of the transplantation frame 34 in a suspending manner via the sensitivity adjusting means 57, and the sensitivity adjusting means 5 is provided.
The reference numeral 7 designates a locking rod 58 having a longitudinally intermediate portion pivotally connected to the steering handle 4, a tension coil spring 59 whose upper end is connected to the front end of the locking rod 58 and whose lower end is connected to the rear end of the operating member 54. And a locking member 60 that is fixed to the steering handle 4 and that locks the rear end of the locking rod 58.

The locking member 60 is provided with a large number of locking portions 60a on the upper and lower sides. By changing the locking position of the locking rod 58 to the upper and lower sides of the locking portion 60a, the tension coil spring 59 is formed. As it expands and contracts, the lifting force by the tension coil spring 59 at the rear end of the operating member 54 is changed. This changes the pressing force of the first detection member 49 against the upper surface of the ridge,
The follow-up sensitivity to unevenness on the ridge top surface can be adjusted.

The second detection roller 50 on the front side of the planting cup 41 is freely rotatable on the lower end of a front support arm 62 whose upper end is pivotally supported by a left-right supporting shaft 61 provided at the lower rear portion of the mission case 6. Attached to the second detection roller 50.
Is provided so as to be swingable up and down around the support shaft 61 via the front support arm 62 so as to follow the unevenness of the ridge 5. A front connecting piece 62a protruding upward is formed at an upper end portion of the front supporting arm 62, and a rear connecting piece 53a protruding upward at an upper end of the rear supporting arm 53 of the first detection roller 49.
Is formed, and the front and rear connecting pieces 62a and 53a are interlocked and connected by a connecting rod (interlocking means) 63.

Therefore, as the first detection roller 49 swings up and down, the second detection roller 50 passes through the connecting rod 63.
Also swings up and down, and the second detection roller 5
Since the first detection roller 49 swings up and down by the vertical swing of 0, both the first and second detection rollers 49 and 50 can detect the ridge height and operate the lifting control valve 32. age,
As a result, for example, even when the first detection roller 49 does not ride on the upper surface of the ridge 5 near the entrance of the ridge 5, the second detection roller 50 rides on the upper surface of the ridge 5 in front of the planting cup 41 to ensure the reliability. The ridge height can be detected, and even when the second detection roller 50 comes off the upper surface of the ridge 5 near the exit of the ridge 5, the first detection roller 49 is located behind the planting cup 41 by the first detection roller 49. The ridge height can be reliably detected by riding on.

The position of the support rod 56 of the first detection roller 49 is adjusted with respect to the locking portion 54a of the operating member 54, and
Even when the height of the detection roller 49 is changed, the height of the second detection roller 50 is changed at the same time. The first
A pair of left and right detection rollers 49 are provided so as to sandwich the seedling planting position, and by rolling the block seedlings on the ridges 5 with the planting cups 41, the upper surface of the ridges is rolled to roll soil on the left and right sides of the seedlings. It also serves as a soil-covering ring that presses against the soil and suppresses the root portion of the seedling, and the sensitivity adjusting means 57 can also adjust the soil-covering pressure of the soil-covering ring.

A buffer means 64 made of a coil spring or the like is provided in the middle of the connecting rod 63 in the longitudinal direction. This buffering means 64 is provided in front of the planting cup 41 when the ridges 5 have small irregularities, etc.
When 0 moves up and down in small increments, the first detection roller 59 is accordingly moved up and down in small increments so that the traveling machine body 2 is not elevated.
Is absorbed, and a slight difference in height is allowed between the front and rear detection rollers 59, 60.

The present invention is not limited to the above-described embodiment, and the design can be changed as appropriate. For example, an operating member connected to the lifting control valve may be provided on the side of the second detection roller in front of the planting cup. The sensitivity adjusting means may be provided on the second detection roller side. Further, the first or second detection roller may be directly connected to the lifting control valve (without an actuating member) by a rod or the like.

Although both the planting device and the seedling feeding device are driven by the power from the PTO shaft of the mission case, a separate output shaft is provided in the mission case to separate the planting device from the seedling feeding device. You may make it drive by the drive path of. Although the transplanter described above is a self-propelled walking type, it can be a riding type and can be configured for multi-row planting with two or more rows in addition to single-row planting. Further, as the seedling supply device, other than the above-mentioned embodiment, a rotary table type, a conveyor type, a rod extruding type, or the like can be adopted.

[0051]

As described in detail above, according to the present invention, a traveling machine body having wheels on both left and right sides and traveling across a ridge,
A planting device for planting seedlings in the ridges and a seedling feeding device for feeding seedlings to the planting device are provided, and the planting device and the seedling feeding device are both supported by a frame fixed to the traveling machine body. Therefore, when the seedlings are delivered from the seedling feeding device to the planting device, the relative positions of the planting device and the seedling feeding device are always constant, and reliable seedling delivery is possible. By providing the frame, the weight of the transplanter can be reduced (claim 1).

Further, in the present invention, the wheel is provided so as to be vertically movable relative to the traveling machine body so as to move the traveling machine body up and down so as to follow the unevenness of the ridge, and the wheel is grounded on the upper surface of the ridge behind the planting device. Then, the first detection member for detecting the unevenness is arranged and supported on the traveling machine body side so as to move up and down following the unevenness of the upper surface of the ridge, and the front of the planting device is also grounded on the upper surface of the ridge. A second detection member for detecting unevenness is arranged and supported on the traveling machine body 2 side so as to move up and down following the unevenness of the ridge upper surface, and the first detection member and the second detection member are
Since the interlocking means is connected so as to move up and down in conjunction with each other, the ridge height is detected by the first and second detection members and the traveling machine body is moved up and down to keep the seedling planting depth by the planting device constant. In addition, since the first and second detection members are arranged in front of and behind the planting device and are interlocked with each other, the first detection member on the rear side is on the upper surface of the ridge near the entrance of the ridge. Even if it is not, the ridge height is detected by the front side second detection member to move the traveling body up and down to a predetermined height, and the front side second detection member comes off from the upper surface of the ridge 5 near the exit of the ridge. Also, the first detection member can detect the height of the ridges and move the traveling machine body up and down to a predetermined height, and it is possible to plant seedlings over a wide area of the ridges and to a constant depth (claim). Item 2).

Further, in the present invention, at least one of the first detection member and the second detection member is provided with the detection sensitivity of unevenness on the ridge upper surface adjustable, so that the detection sensitivity depends on the state of the ridge upper surface and the like. The seedling can be planted freely because it is adjustable (claim 3). Further, according to the present invention, since the interlocking means is provided with the buffer means to allow the height difference between the first detection member and the second detection member, one detection member may be formed due to small unevenness on the upper surface of the ridge. Even if it moves up and down in small steps, the buffering means absorbs the movement of one detection member to allow the height difference with the other detection member, and it is possible to prevent the traveling machine from moving up and down in small increments, enabling stable seedling planting. It is possible (Claim 4).

[Brief description of drawings]

FIG. 1 is an overall side view of a transplanter.

FIG. 2 is a side view showing a planting device of a transplanter, a seedling supply device, and a mechanism for detecting unevenness of ridges.

FIG. 3 is a plan view of a traveling machine body of the transplanter.

FIG. 4 is a side view of a traveling body of the transplanter.

FIG. 5 is a front sectional view showing a seedling supply device of the transplanter.

FIG. 6 is a side view showing a vertical feeding mechanism in the seedling supply device of the transplanter.

FIG. 7 is a side view showing an operation of a main part of the vertical feeding mechanism.

[Explanation of symbols]

 2 traveling machine body 5 ridge 9 front wheel 10 rear wheel 34 transplanting frame 35 planting device 36 seedling feeding device 49 first detection roller 50 second detection roller 63 interlocking means 64 cushioning means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junji Kurano 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Factory

Claims (4)

[Claims] 1. A traveling machine body (2) having wheels (9) and (10) on both left and right sides and traveling across a ridge (5), and a planting device (35) for planting seedlings on the ridge (5). ) And a seedling supply device (36) for supplying seedlings to the planting device (35),
The transplanter characterized in that the planting device (35) and the seedling supply device (36) are both supported by a frame (34) fixed to the traveling machine body (2). 2. The wheels (9), (10) are provided with ridges (5).
In order to move the traveling body (2) up and down following the irregularities of the traveling body (2), the traveling body (2) can be moved up and down relative to the traveling body (2). A first detection member (49) for detecting the unevenness is arranged and supported on the traveling machine body (2) side so as to move up and down following the unevenness of the upper surface of the ridge (5), and the planting device (35) A second detection member (50) that grounds on the upper surface of the ridge (5) and detects the unevenness is also arranged forward, and the traveling machine body (2) side is moved so as to follow the unevenness of the upper surface of the ridge (5) and ascend and descend. The first detection member (49) and the second detection member (50) are connected to each other by interlocking means (63) so as to move up and down in conjunction with each other. Transplanter. 3. The at least one of the first detection member (49) and the second detection member (50) is provided with an adjustable detection sensitivity of unevenness on the upper surface of the ridge (5). Item 2. The transplanter according to Item 2. 4. The buffer means (64) is provided in the interlocking means (63) to allow a height difference between the first detection member (49) and the second detection member (50). The transplanter according to claim 2.