JPS6261285B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seedling transplanter for planting soiled seedlings such as cabbage in a ridge.

To adjust the vertical position of the planting device to achieve the appropriate planting depth depending on the height of the ridge, support the rear of the aircraft and move only the tail wheel that rolls at the bottom of the ridge up and down. Because of this adjustment, the aircraft, whose front part is supported by the drive wheels rolling on the bottom of the ridge, changed its inclination with respect to the ridge as the tail wheel moved up and down. As a result, there are problems such as the planting position of seedlings with soil being tilted.

Therefore, the present invention proposes a seedling transplanter configured so that the inclination of the planting device does not change when adjusting the planting depth and always moves up and down in a constant posture. To explain based on one embodiment, as shown in the rear view in FIG. 2, seedling box guides 2, 2 are provided in a slanted or vertical shape on a frame 1 extending left and right, and a lattice-like structure is formed. The seedling boxes 3, 3 equipped with the partitions 3a... are placed along the seedling box guides 2, 2, and
The seedling boxes 3, 3 are provided so that they can be vertically fed vertically to the rows and successively downward by a vertical feeding mechanism (not shown). Seedling extrusion rods 4 corresponding to the partitions 3a..., 3a..., respectively.
..., 4... are provided, and winding transmission mechanisms 6, 6 driven by an intermittent movement mechanism (not shown) provided in the central drive case 5 rotate cranks 7, 7 of the seedling extrusion rod 4, respectively. The soiled seedlings 8 in the partitions 3a are then pushed out inward in the left and right direction, and these are pushed out by a planting device 9, which will be described later, and which is provided to swing back and forth between the left and right seedling boxes 3, 3. After the planting device 9 moves toward the center in the left-right direction, the seedlings 8 with soil are placed in the U-shaped seedling guide 10 located below the center.
... is dropped from the planting device 9. As will be described later, the seedling extrusion body 12 moves the soiled seedlings 8 inside the seedling guide 10 by the endless belt 11 rotating inside the seedling guide 10.
The structure is such that one seedling is discharged from the rear end opening 10a into the planting groove 13 of the ridge 12.

The frame 1 mentioned above has its lower part fixed to the left and right frame pipes 15, 15 extending rearward from the front frame 14 of this seedling transplanter,
The front parts of the left and right drive chain cases 17, 17 are pivotally supported by shafts 18, 18 by brackets 16, 16 fixed to the front parts of the frame pipes 15, 15,
Pivotally supported at the rear of left and right drive chain cases 17, 17 so as to be driven by a drive chain 21 via a winding transmission mechanism 20 with a clutch driven by an engine 19 and a winding transmission mechanism (not shown). The driven wheels 22, 22 are connected to the left and right ridge grooves 12a, 1 of the ridge 12.
Arms 23, 23 are fixed to the drive chain cases 17, 17, respectively, and are provided so as to roll.
The pistons 25a of control cylinders 25, 25 whose rear portions are pivotally connected to the drive case 5 by pins 24 are pivotally connected to the pistons 25a by pins 26. Also, frame pipe 1
5, 15 are fixedly provided with brackets 27, 27, and the tail wheel mounting rod 2 pivotally supports the tail wheels 28, 28 that roll on the left and right ridges 12a, 12a.
Rotating bases 29a, 29a of 9, 29 are rotatably fitted into brackets 27, 27, and this rotating base 2
A driving chain case 17, which connects the rotating tips of arms 30, 30 fixed to 9a, 29a and the arms 23, 23 with rods 31, 31, and rotates as the pistons 26a, 26a move in and out; The drive wheels 22, 22 and the tail wheels 28, 28 are constructed into an elevating and lowering operation mechanism 60 in which the drive wheels 22, 22 and the tail wheels 28, 28 are always raised and lowered by the same distance.

A control valve 32 capable of supplying and discharging pressure fluid is provided to the control cylinders 25, 25, and a shaft 34 is pivotally supported on brackets 33, 33 attached to the frame pipes 15, 15, and a curved plate-shaped detection device is attached to this shaft 34. body 35
Detection mechanism 6
1, and the detection body 35 that comes into sliding contact with the upper surface of the ridge 12 is
When the upper surface of the ridge 12 becomes higher than the ridge groove portions 12a, 12a, it rotates upward and rotates the switching arm 36, so that the control valve 32 is connected to the control cylinder 2.
The pistons 25a, 25a of 5, 25 are moved backward, and the drive chain cases 17, 17 and the tail wheel mounting rod 29,
Pipe frame 1 by standing up 29
5, 15 to raise the aircraft, and raise the seedling guide body 10.
The depth at which the rear end opening 10a is recessed into the upper surface of the ridge 12 becomes constant, and conversely, when the upper surface of the ridge 12 becomes lower, the downward rotation of the detection body 35 causes
The control valve 32 supplies pressure fluid to the control cylinders 26, 26 so that the drive chain cases 17, 17 and the tail wheel mounting rods 29, 29 fall down, and the rear end opening 10
The configuration is such that the immersion depth of a is constant.
Note that the tension clutch mechanism 39 connected to the switching arm 36 is connected to the detection object 3 at a location where there is no ridge 12.
The hydraulic pump driven by the winding transmission mechanism 40 is configured to stop when the hydraulic pump 5 is in a hanging state.

The illustrated planting device 9 has drive shafts 42 supported by front and rear drive cases 41, 41, respectively, as shown in a side view in FIG. 3 and as a rear view in FIGS. , swinging rods 43, 43 are fixedly installed in the front and rear, and pins 44, 44 are provided protruding from the left and right parts near the swinging tips of the respective swinging rods 43, respectively. and,
A seedling transfer rod 45 having an L-shaped front face and a flat seedling transfer plate 46 having a bottom plate 45a are rotatably fitted into the drive shaft 42 so as to sandwich the pins 44, respectively. A spring 4 whose end portions are engaged with spring seats 45b and 46a provided on each of the delivery plates 46.
At 7 and 47, the seedling transfer rod 45 and the seedling transfer plate 46 are energized so as to join together, and the front and rear edges of the seedling transfer plate 46 are provided with side receiving plates 46b and 46b, respectively.

An opening groove body 47 for recessing the planting groove 13 into the ground surface is provided at the rear lower part of the seedling guide 10, and a droplet which is pivoted to the left and right at the upper part of the seedling guide 10 by a shaft 48, respectively. The prevention plates 49a and 49b are provided so as to be always held vertically by a torque spring 50. Then, by intermittently rotating the swinging rod 43 back and forth via the crank mechanism 51 by an intermittent movement mechanism (not shown) provided in the drive case 5, the swinging rod 43 is housed in the partition 3a... Dotsuki seedlings 8
... with the seedling transfer rod 45 and the seedling transfer plate 46.
0. That is, as shown in FIG. 4, the swinging rod 43 rotates to the left and the bottom plate 45a of the left seedling transfer rod 45 comes into contact with the stopper 52 provided on the seedling guide 2, at the first standby position. The swinging rod 43 of the tank stops, and at this time, the right seedling transfer rod 45 and the seedling transfer plate 46, which are joined by the spring 47, are attached to the bottom plate 45.
It stops at the second standby position directly above the seedling guide 10 with the seedlings 8 with soil placed on it, and at this time, the fall prevention plate 49b on the right stands upright to prevent the seedlings 8 with soil from falling. The left fall prevention plate 49a is pushed down by the swinging rod 43. and,
Due to the previous release operation by the seedling transfer rod 45 and the seedling transfer plate 46, the seedlings 8 have already been planted in the seedling guide 10...
As shown in FIG. 3, the engaging protrusion 53a inserted into the guide groove 10d provided in the side plate 10c is guided into the seedling guide 10 and moved back and forth along the bottom plate 10b. The seedling pusher 53 is equipped with an internally movable seedling pusher 53, and is energized by a return spring 54 so as to always move in the direction of arrow B, which is the traveling direction of the machine. Wrap transmission mechanism 55 arranged along guide body 10
The seedling pushing body 53 pushes out the soiled seedlings 8 on the bottom plate 10b by the endless band 11 which is engaged with the engaging body 57 fixedly attached to the endless band 11 and rotates in the direction of the arrow C.
It is formed so that it can be discharged from the rear end opening 10a into the planting groove 13 individually. Therefore, when all the seedlings 8 with soil on this bottom plate 10b have been released, the engaging body 5
7 reaches the folded end of the endless band 11 and pushes out the seedling extrusion body 5
3, the return spring 5
4, this seedling extrusion body 53 is connected to this seedling guide body 10.
It will quickly return to the vicinity of the front end of
The above-mentioned intermittent movement mechanism causes the swinging rod 43 to rotate slightly in the direction of the state arrow D in FIG. 46c comes into contact with the stopper bolts 58, 58 installed in the frame 1, so this seedling delivery plate 4
6 remains stationary directly above the seedling guide 10, but the right pins 44, 44 of the swinging rod 43, which rotate together with the drive shaft 42, rotate the seedling transfer rod 45 to the release position shown in FIG. In this state, the bottom plate 45a escapes from directly above the seedling guide 10, so the seedlings 8 with soil on the bottom plate 45a fall all at once into the seedling guide 10. The left seedling transfer plate 46 is connected to the left pins 44, 44.
Since the seedling extrusion rods 4 are pushed and stopped at the seedling receiving position in front of the extrusion direction, the swinging rods 43 remain as they are for a while. An engaging body 57 fixed to the endless band 11 of the winding transmission mechanism 55
is engaged with the engaging portion 53b of the seedling pusher 53, and as described above, the seedlings 8 with soil on the bottom plate 10b...
The seedlings 8 with soil started to be released into the planting groove 13, and the soil part of the released seedlings 8 is pressed by the left and right pressing wheels 59, 59 and planted, and the left and right cranks 7 are rotated. To start, the seedling extrusion rod 4... moves the soiled seedlings 8... in the partition 3a... in one horizontal row to the side receiving plates 46b, 4.
The seedlings are pushed out all at once onto the seedling transfer plate 46 surrounded by 6b, and the seedling pushing rods 4 stop at this pushing position. When this extrusion operation is completed, the swinging rod 43 starts to rotate in the direction opposite to the arrow D by the intermittent motion mechanism, and the pin 44 also moves in the direction opposite to the arrow D, so that the spring 47 The seedling delivery plate 46 first comes together with the seedling transfer rod 45, and until this joining, the soil part of the soiled seedlings 8... is connected to the extrusion plate 4a of the seedling extrusion rod 4.
The soil part is supported by the bottom plate 45a of the left seedling transfer rod 45, and the soil part is supported by the bottom plate 45a of the left seedling transfer rod 45. 2 reaches a second standby position corresponding to the second standby position,
At this time, the bottom plate 45a of the left seedling transfer rod 45 is directly above the seedling guide 10, so the left fall prevention plate 49a stands upright to prevent the seedlings 8 with soil from falling on the bottom plate 45a. Also, seedling transfer rod 4 on the right
5 and the seedling transfer plate 46 reach a first standby position where the bottom plate 45a abuts against a stopper 52 provided on the seedling guide 2.

Then, as mentioned above, the soiled seedlings 8 of the seedling guide 10 are
When all of the ... have been released, the swinging rod 43 rotates a little from this position in the direction of arrow D and moves to the left release position corresponding to the release position of the seedling transfer rod 45 on the right in FIG. The seedling transfer rod 45 returns and the seedlings 8 with soil on the bottom plate 45a fall into the seedling guide 10, and at this time, the right seedling transfer plate 46 is used to transfer the seedlings to the seedling receivers extending in front of the extrusion of the seedling extrusion rods 4. will reach the position. When the seedling pushing out operation by the right seedling pushing rod 4 is finished, the swinging rod 43 starts rotating in the direction of the arrow D and returns to the state shown in FIG. 4. .

Since the seedling transplanting machine according to the present invention is configured as described above, the seedling transfer plate 4 extending in the seedling receiving position
6, the seedlings 8 with soil are pushed out from the seedling box 3, and these seedlings 8 with soil are transferred above the seedling guide body 10 as the seedling transfer plate 46 and the seedling transfer rod 45 rotate downward,
As the seedling transfer rod 45 moves backward, its bottom plate 45a
The seedlings 8 with soil on top fall all at once into the seedling guide 10. And the rotating endless belt 11
The seedling pushing body 5 is moved backward by the engaging body 57 of
3, the seedlings 8 with soil in the seedling guide 10 are released one by one into the planting groove 13, and the planting work is performed.

The detection body 35 that comes into sliding contact with the upper surface of the ridge 12 is
When the height of the ridge 12 is within a certain range, the switching arm 36 of the control valve 32 does not rotate, so the pistons 25a, 25a of the control cylinders 25, 25 do not operate, and therefore the drive chain cases 17, 1
7 and the tail wheel attachment rods 29, 29 do not rotate, the rear end opening 10a of the seedling guide 10 has a constant depth with respect to the upper surface of the ridge 12, and the planting depth of the seedlings 8 with soil is appropriate. position. When the soil surface of the ridge 12 becomes higher than the standard height of the ridge 12, the detection body 35 rotates upward and the switching arm 36
, so that the control valve 32 rotates the control cylinder 2
The pistons 25a, 25a of 5, 25 are moved backward, and the drive chain cases 17, 17 and the tail wheel mounting rod 29,
Pipe frame 1 by standing up 29
5, 15 to raise the aircraft, and raise the seedling guide body 10.
The depth at which the rear end opening 10a is recessed into the upper surface of the ridge 12 becomes constant, and conversely, when the upper surface of the ridge 12 becomes lower, the downward rotation of the detection body 35 causes
The control valve 32 supplies pressure fluid to the control cylinders 26, 26 so that the drive chain cases 17, 17 and the tail wheel mounting rods 29, 29 fall down, and the rear end opening 10
The immersion depth of a becomes constant.

Therefore, the planting groove 13 opened by the seedling guiding body 10 and one groove opening body 47, which is controlled so that the immersion depth is always constant, always has a constant depth. Then, this rear end opening 1
The soiled seedlings 8 released from 0a into the planting groove 13 are always planted at a constant, appropriate depth regardless of variations in the height of the ridges 12 or undulations of the upper surface of the ridges 12.

[Brief explanation of the drawing]

FIG. 1 is a side view showing one embodiment of the seedling transplanter of the present invention, FIG. 2 is a rear view of FIG. 1, FIG.
This figure and FIG. 5 are rear views of essential parts of the above-mentioned planting device, showing respective operating states. Explanation of symbols, 1... Frame, 2... Seedling box guide, 3... Seedling box, 3a... Partition, 4... Seedling extrusion rod, 5, 41... Drive case, 6, 20, 40,
55...Wrap transmission mechanism, 7...Crank, 8...
Seedling with soil, 9... Planting device, 10... Seedling guide, 1
0a... Rear end opening, 10b, 45a, 48b...
...Bottom plate, 10c...Side plate, 10d...Guide groove, 1
1... endless belt, 12... ridge, 12a... ridge groove part,
13... Planting groove, 14... Front frame, 15...
...Frame pipe, 16,27,33...Bracket, 17...Drive chain case, 18,34,
48... Axis, 19... Engine, 21... Drive chain, 22... Drive wheel, 23, 30, 37... Arm, 24, 26, 44... Pin, 25... Control cylinder, 25a... Piston , 28...tail wheel,
29...Tail wheel mounting rod, 29a...Rotating base, 3
1, 38... Rod, 32... Control valve, 35...
Detection object, 36... Switching arm, 39... Tension clutch mechanism, 42... Drive shaft, 43... Swinging rod, 45... Seedling transfer rod, 45b, 46a... Spring seat, 46... Seedling delivery Plate, 46c...Locking part, 46
b...Side support plate, 47...Spring, 49a, 49b...
... Fall prevention plate, 50 ... Torque spring, 51 ... Crank mechanism, 52 ... Stopper, 53 ... Seedling extrusion body, 53a ... Engagement protrusion, 53b ... Engagement part, 5
4... Return spring, 57... Engaging body, 58... Stopper bolt, 59... Squeezing wheel, 60... Lifting operation mechanism, 61... Detection mechanism.

Claims (1)

[Claims] 1 The body of the seedling transplanter, which has a planting device visible on the top surface of the ridge, is supported by left and right drive wheels that roll in the ridge grooves and a tail wheel, and these drive wheels and tail wheels The elevating and lowering operation mechanism, which is provided to move up and down together with the planting device, is configured to operate in conjunction with a detection mechanism capable of detecting the upper surface of the ridge to maintain the planting device at a constant position from the ridge surface. Seedling transplanter.