JP3666243B2 - Seedling transfer device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This invention is used for a seedling planting machine for transplanting seedlings in which one strain is grown independently in a pot.
[0002]
[Prior art]
In the seedling transplanter, the root pot of the seedling pushed out from the pot is pushed into the holder of the carrier, and when the seedling is carried to a predetermined position by the carrier, the root pot of the seedling is pushed out of the holder and transplanted to the field. It has come to be. Then, the holder has a nail that appears and disappears, and the nail sticks into the pressed root pot and is carried without being pulled out. When reaching a predetermined position, the nail is pulled out from the root pot and the seedling is smoothly taken out from the holder. It was like that.
[0003]
[Problems to be solved by the invention]
In order to improve efficiency, the speed of seedling transplanters is increasing. Then, the root pot of the seedling is also pushed out from the holder at high speed. At this time, if the resistance between the holder and the root pot is small, there is a root pot that protrudes more than necessary, and the seedling pushed out from the holder may be disturbed, and the posture and depth of the transplanted seedling may not be uniformed. It was.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is provided with a cylindrical holder 49 having a nail 50 that appears and holds a root pot 27a of a seedling 27, provided on a carrier 47 that reciprocates up and down. When the root pin 27a of the seedling 27 is pushed into the holder 49 by the push pin 42, the carrier 47 is lowered while the holder 49 holds the root pot 27a of the seedling 27, and the carrier 47 is lowered. In the seedling transfer device in which the extruding piece 51 extrudes the root pot 27a of the seedling 27 from the holder 49 to transfer the seedling 27, the claw 50 is rotated when the carrier 47 is raised to shallow the holder 49. A cam plate 68 to be inserted is provided, and when the carrier 47 is lowered, the carrier 47 is separated from the cam plate 68 and the claw 50 is deeply inserted into the holder 49, and the extruded piece 51 is transferred from the holder 49 to the seedling 27. Also when pushing out the root pot 27 a, the claw 50 enters the holder 49 shallowly, the cam plate 68 swings by the pushing operation of the push pin 42, and the root pot of the seedling 27 is formed by the recess 68 a provided in the cam plate 68. The seedling transfer device is configured such that the claw 50 swings before the 27 a is pushed into the holder 49 .
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described.
A seedling planting device 2 is mounted after the traveling vehicle body 1 to form a pot-type seedling transplanter (the figure is a rice transplanter) (FIGS. 1 and 2).
The traveling vehicle body 1 is configured as follows. A main gear box 3 and a rear wheel gear box 4 are provided on the front and rear sides of the frame 5, and a pair of front wheels 6 and a pair of rear wheels 7 are arranged on the outer sides thereof. The engine 8 is provided on the frame 5, and the power is transmitted to the front wheels 6 and the rear wheels 7 via the transmission in the main gear box 3, and these are rotated on the paddy field and the traveling vehicle body 1 is It is made to move forward. An engine 8 is covered with a cover 9, and a seat 10 is provided thereon. A steering wheel 12 is disposed on the handle frame 11, and the front wheel 6 is steered by the operation to change the course of the traveling vehicle body 1. The support column 13 extends upward from the rear portion of the frame 5, and the subsequent lifting frame 14 is connected by a pair of links 15 that are parallel in the vertical direction when viewed from the side. The front end of the lifting cylinder 16 is attached to the frame 5, and the protruding end of the piston rod 17 that protrudes obliquely upward from this is connected to the lower end of the arm 18 that extends downward from the upper link 15. The elevating frame 14 is raised and lowered.
[0006]
The seedling planting device 2 is configured as follows. A horizontally long pipe frame 19 is attached to the back and bottom of the lifting frame 14, and four seedling planting units 20 are arranged side by side on this.
Each seedling planting unit 20 is made as follows. A gear box 21 projects obliquely upward from the pipe frame 19, and a transmission case 22 is fixed upward on both sides thereof (FIG. 3). The upper portions of the left and right transmission cases 22 are connected to each other by a horizontal rod 23, and a support column 24 extending upward from the center thereof is bent forward in the middle. A pair of upper and lower seedling platforms 25 are fixed on the support column 24 in a rearward and downward oblique manner.
[0007]
The seedling box 26 (FIG. 4) is placed on the seedling table 25. A plurality of pots 26b each having a cylindrical cavity are integrally provided on a flexible resin plate 26a to form a seedling box 26. Fourteen pots 26b are arranged side by side, and the middle is slightly opened. Feed holes 26c are provided on both sides of the resin plate 26a at the same pitch as the front and rear pots 26b. The cavity of the pot 26b becomes slightly narrower as it goes down, and the bottom of the pot 26b is configured as a valve into which an extrusion pin 42 described later can enter. A floor soil is put in each cavity, and a seed fir is sown and covered with soil, and when a predetermined number of days elapses while irrigating, seeds 27 sprout and seedlings 27 (FIG. 8) grow.
[0008]
At the same time, the extended roots are entangled in the pot 26b to form a root pot 27a (FIG. 8). The seedling boxes 26 with the seedlings 27 facing upward are placed on the respective seedling mounting platforms 25.
Rails 28 extending downward from both sides of each seedling platform 25 are integrated in the middle, bent in a U shape, and reach a receiving frame 29 under the support 24. The left and right rails 28 are formed in an L-shaped cross section so as to hold both sides of the seedling box 26, the lower part is fixed to the inner surface of the transmission case 22, and the front side is constituted by a pair of ridges.
[0009]
The box feed shaft 30 protrudes laterally from the gear box 21 and swings with the power of the engine 8. One end of the bell crank 31 is connected to the arm 30a of the box feeding shaft 30 by a rod 32, and the above-mentioned swing is transmitted. A feed claw 33 is swingably attached to the other end of the bell crank 31 by a pin 34, and is pulled around by a spring 35 (FIG. 5) so that the claw tip enters the rail 28 through a hole 28a. The middle of the pawl 36 is pivotally attached to the rail 28 by a pin 37, the upper end is pushed by a spring (not shown), and is pushed clockwise as viewed from the right (FIG. 3), and the lower end claw tip is a hole 28a. It rushes into the rail 28. Then, the seedling box 26 supplied from the seedling mount 25 stops its descent when the nail tips of the feeding claw 33 and the pawl 36 enter the feeding hole 26c at the lower end. After that, when the feeding claw 33 is lowered by the swing of the bell crank 31, the claw tip pulls down the seedling box 26. At this time, the pawl 36 comes out of the feed hole 26c, moves to the upper feed hole 26c by the above-described pulling down of the seedling box 26, and stops its rise. Subsequently, when the feeding claw 33 rises, the claw tip moves to the upper feeding hole 26c. By repeating this, the seedling box 26 is intermittently sent.
[0010]
An extrusion shaft 38 protrudes laterally from the gear box 21 and is rotated by the power of the engine 8. The arm 39 a of the swing shaft 39 and the arm 38 a are connected by a rod 40. The horizontal rod 41 is supported so as to move back and forth, and the swing shaft 39 is connected to the pinion or rack (not shown). Fourteen extruding pins 42 are provided side by side on the horizontal bar 41, the middle is slidably supported by a guide plate 43 (FIG. 5), and is moved back and forth by the rotation of the extruding shaft 38. And if it moves later, the extruding pin 42 enters the respective pots 26b arranged side by side, pushes the root pot 27a, and pushes out the seedling 27 from the seedling box 26 later. The push pin 42 then moves forward and comes out of the pot 26b. Then, the seedling box 26 is lowered by the feeding claw 33 as described above.
[0011]
The seedling feeding shaft 44 protrudes laterally from the gear box and is rotated by the power of the engine 8. The arm of the swing shaft 45 and the arm of the seedling feeding shaft 44 are connected by a rod 46. Both sides of the carrier 47 are respectively attached to the transmission case 22 by a pair of upper and lower links 48, and the swinging movement of the carrier 47 moves between the rear and the lower side of the rail 28 while maintaining the same posture. The shaft of the link 48 and the swing shaft 45 are connected by a gear (not shown), and the carrier 47 reciprocates as the seedling feed shaft 44 rotates.
[0012]
Fourteen holders 49 are provided side by side on the carrier 47. Each holder 49 is configured in a cylindrical shape that is tilted backward, and an upper portion is opened, and a claw 50 that appears and disappears is provided in the lower portion. When the carrier 47 comes to the upper end, the push pin 42 moves later, and the root pot 27a of the seedling 27 pushed out from the pot 26b by the movement is inserted into the hollow portion. When the root pot 27a is inserted into each holder 49 as described above, the carrier 47 descends. The carrier 47 is guided by the link 48 and travels substantially straight forward at the lower end. At this time, each extruding piece 51 (FIG. 8) enters the cavity of the holder 49 from the upper open portion, and the root pot 27 a is scraped off after the carrier 47.
[0013]
A pair of belt conveyors 52 are arranged side by side, and each of the seven extruded seedlings 27 is placed and sent to the outside.
A transmission frame 53 extends from the pipe frame 19 outside the respective belt conveyors 52, and a drum 54 is provided inside the rear part. The implantation rod 55 protrudes from the drum 54 and is rotated counterclockwise by the power of the engine 8 in FIG. Then, the planting basket 55 receives the root pot 27a sent to the end of the belt conveyor 52 on its lower surface when it is in a horizontal posture protruding forward, and stands up while turning to raise the seedling 27. It stands upright and pushes it into the mud, then comes out and transplants it.
[0014]
By repeating this, the seedlings 27 of the seedling box 26 are transplanted into eight rows on the mud surface.
In addition, about the adjacent seedling planting unit 20, one transmission frame 53 is shared.
A float 56 is disposed under each seedling planting unit 20 and slides on the muddy surface as the traveling vehicle body 1 moves forward.
[0015]
The nail 50 is made as follows. The horizontal shaft 57 is rotatably attached to the carrier 47, and the claw 50 fixed to the horizontal shaft 57 protrudes and descends from the bottom into the hollow portion of each holder 49 (FIGS. 6 and 8). . Each nail 50 includes a pair of toes, and the roundness of the rear toe is larger than the roundness of the other toes (FIG. 8).
A play is provided between the horizontal shaft 57 and the claw 50, and the play can be killed by the spring 57b. When the rotary shaft 58 is attached to the carrier 47, the arm 58a and the arm 57a of the horizontal shaft 57 are connected by a link 59, and when the link 59 is pulled later by the spring 60, the claw 50 rotates clockwise (FIG. 8). The toe of the lever enters the cavity of the holder 49. An arm 58b provided with a roller 61 protrudes upward from the rotation shaft 58, and the claw 50 is raised and lowered by the rotation.
[0016]
The shaft 62 is supported by the left and right transmission cases 22, the lever 63 is attached to this, the lower end 63 a of the lever 41 hits the rear side 41, and when the push pin 42 moves back and forth, the lever 63 can swing. (Fig. 7). The support arm 64 protrudes rearward from the transmission case 22 and the shaft 65 is supported at the rear end. The middle of the lever 66 is attached to the shaft 65, and the lower end thereof and the upper end of the lever 63 are connected by a rod 67. A cam plate 68 having a recess 68a in the middle is pivotally attached to a support plate protruding later from the rail 28 by a shaft 69. The cam plate 68 and the upper end of the lever 66 are connected by a link 70, and the lever 63 is When it swings, the cam plate 68 swings.
[0017]
Then, the carrier 47 is raised by the swing of the link 48, and when the root pin 27a is pushed out from the holder 49 when the push pin 42 is moved later, the reed 41 pushes the lever 63 counterclockwise in FIG. Then, the rod 67, lever 66 and link 70 turn the cam plate 68 to the position shown in FIG. The arm 58 b is pushed and rotated by the cam plate 68, the claw 50 rotates, and the rear claw tip enters the cavity of the holder 49 shallowly. Therefore, a light resistance is applied to the root pot 27b pushed into the holder 49 by the push pin 42, and it is prevented from jumping out later with the momentum when pushed.
[0018]
Note that when the recess 68a passes through the roller 61 due to the swing of the cam plate 68, the claw 50 swings. That is, before the root pot 27a is pushed into the holder 49, the claw 50 is swung by the recess 68a, so that the soil and roots attached to the nail 50 are shaken off by this swing (impact), and the nail 50 Strongly holds the root pot 27a.
After that, the carrier 47 is lowered by the swing of the link 48. When the carrier 47 is lowered to a predetermined position, the roller 61 is separated from the cam plate 68. Then, the link 59 is pulled by the spring 60 and the nail 50 stands up and is deeply inserted into the root pot 27a.
[0019]
When the cam plate 71 is attached to the lower portion of the rail 28 and the carrier 47 is lowered and moves forward in a substantially horizontal movement, the roller 61 hits this, the claw 50 swings counterclockwise, and the subsequent claw tip moves. The holder 49 is configured to retreat to a position (FIG. 8) that enters the cavity of the holder 49 shallowly. The holder 49 moves forward while maintaining this state, and the root pot 27 a is scraped off onto the belt conveyor 52 by the extruded piece 51.
[0020]
As shown in FIG. 9, when the pair of links 48 are configured to be unequal or non-parallel, and the carrier 47 moves substantially horizontally downward, the seedlings 27 held by the holder 49 are provided so as to be inclined slightly rearward and downward. When the root pot 27a was removed from the holder 49, the resistance increased and the popping out of the root pot 27a was reduced. Further , according to this configuration, when the root pot 27a is pulled out from the holder, the leaves of the seedlings are inclined and come out while contacting the belt conveyor 52, so that the popping out of the root pot 27a can be further reduced .
[0021]
【effect】
As described above, according to the present invention, when the root pot 27a of the seedling 27 is pushed into the holder 49 by the pushing pin 42 and when the seedling 27 is removed from the holder 49, the tip of the nail 50 is inserted into the root pot 27a. Therefore, the resistance prevents the seedling 27 from jumping out, and the seedling 27 has an effect of orderly transfer. Further, since the claw 50 swings before the root pot 27a of the seedling 27 is pushed into the holder 49 by the recess 68a provided in the cam plate 68, the soil and root attached to the claw 50 are shaken off, and the claw 50 is removed. Thus, the root pot 27a can be strongly held.
[Brief description of the drawings]
FIG. 1 is a side view of a rice transplanter according to the present invention. FIG. 2 is a plan view thereof. FIG. 3 is an enlarged right side view of a part of the rice transplanter. 5] Enlarged rear view of part of the rice transplanter [Figure 6] Rear view of part of it [Figure 7] Right side view of part of it [Figure 8] Right side view of part of it [Figure 9] Others Right side view of some rice transplanters [Explanation of symbols]
27 Seedlings 27a Root Pot
42 Extrusion pin 47 Carrier 49 Holder 50 Claw
51 Extruded piece
68 Cam plate
68a recess

Claims (1)

A cylindrical holder (49) having a nail (50) that appears and holds the root pot (27a) of the seedling (27) is provided on a carrier (47) that reciprocates up and down, and the carrier (47) is raised. When the root pin (27a) of the seedling (27) is pushed into the holder (49) by the push pin (42) during holding, the holder (49) holds the root pot (27a) of the seedling (27) The carrier (47) is lowered, and when the carrier (47) is lowered, the extruded piece (51) pushes the root pot (27a) of the seedling (27) from the holder (49) and transfers the seedling (27). In the seedling transfer device, a cam plate (68) is provided to rotate the claw (50) when the carrier (47) is raised so as to enter the holder (49) shallowly, and the carrier (47) is lowered. The carrier (47) is separated from the cam plate (68). When the nail (50) penetrates deeply into the holder (49) and the extruded piece (51) pushes out the root pot (27a) of the seedling (27) from the holder (49), the nail (50) is also held in the holder (49 ) And the cam plate (68) swings by the pushing operation of the push pin (42), and the root pot (27a) of the seedling (27) is formed by the recess (68a) provided in the cam plate (68). The seedling transfer device is configured such that the claw (50) swings before being pushed into the holder (49) .

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