JP2002223615A - Seedling planter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To well plant a seedling even when a traveling car body is vertically moved and make ground contact marks of supporting devices scarcely placed on a ridge by installing a seedling planting device composed so as to be vertically movable relatively to the traveling car body so that the seedling planting device is supported on the ridge with the supporting devices in the seedling planter for upland farming. SOLUTION: This seedling planter is obtained by mounting a seedling planting device 40 so as to be freely rotatable around transverse shafts 43 and 44 arranged in the front of an axle of wheels 6 on the rear side in the traveling car body 7, composing the seedling planting device 40 so that the rear of the seedling planting device 40 is vertically movable relatively to the traveling car body 7, providing the supporting devices 82 for supporting the seedling planting device 40 on the ridge at the rear of the seedling planting device 40, installing a spring 91 for elastically supporting the seedling planting device 40 on the traveling car body 7 between a site near a handle 39 at the rear of the seedling planting device 40 and a site near the handle 39 at the rear of the traveling car body 7 and further providing a lever 92 for regulating and operating supporting load of the seedling planting device 40 supported by the traveling car body 7 through the spring 91 near the handle 39 at the rear of the traveling car body 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of field-planting seedlings.

[0002]

2. Description of the Related Art A seedling plant in the field is used to move a running vehicle body and operate a seedling tool of a seedling transplanter to transplant seedlings into ridges. When the seedlings move up and down, the seedling planting tool moves up and down with respect to the ridges, and the planting depth of the seedlings becomes deeper or shallower. To solve this problem, conventionally, as described in, for example, Japanese Patent Application Laid-Open No. 5-6, a seedling-planting device having a ground contact wheel mounted on the upper surface of a ridge so as to be vertically movable with respect to a traveling vehicle body. When mounted, the seedling-planting device is configured to move up and down so as to be maintained at a constant height with respect to the ridge even when the traveling vehicle body moves up and down. In addition, a spring is mounted between the seedling plant, which is mounted to be movable up and down, and the center of the traveling vehicle body, so that the seedling plant is elastically supported on the traveling vehicle body. Therefore, in the case of this publication, even if the traveling vehicle body moves up and down, the planting depth of the seedlings hardly fluctuates, and the contact load of the contact wheel can be reduced, so that the contact mark of the contact wheel on the ridge is hardly formed.

[0003]

In actual field work, the hardness of the soil changes from time to time due to soil characteristics, moisture, etc., and the grounding load of the grounding wheel changes due to traveling on uphill and downhill slopes. Therefore, the operator must properly adjust the contact load of the contact wheel while checking the state of the contact mark of the contact wheel. But,
The thing described in the above-mentioned publication, it is difficult to precisely adjust the elastic supporting force of the spring between the front and rear intermediate part of the vertically moving seedling plant and the central part of the running vehicle body,
In addition, since the adjustment point of the spring's elastic support force is located in the center of the vehicle body and at the front side of the planting tool, the operator who is behind the handle for maneuvering the aircraft and checks the state of the contact mark of the contact wheel is required. It is in a place where it is difficult to operate easily and quickly.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a traveling vehicle body 7 having a pair of left and right wheels 5 on a front side and a pair of right and left wheels 6 on a rear side. A seedling plant 4 provided with a steering handle 39 at the rear and a seedling plant 72 at the rear side of the traveling vehicle body 7 for transplanting seedlings to ridges.
0 is a horizontal axis 4 arranged forward of the axle of the rear wheel 6
3 and 44, the rear portion of the seedling plant 40 located behind the axle of the rear wheels 6
A supporting device 82 is provided at the rear of the seedling plant 40 so as to support the seedling plant 40 on a ridge, and a portion near the handle 39 at the rear of the seedling plant 40 and the rear of the traveling vehicle body 7. A spring 9 for elastically supporting the seedling plant 40 on the traveling vehicle body 7 between the vicinity of the handle 39 of the vehicle.
And a lever 92 for adjusting the supporting load of the seedling plant 40 supported by the traveling vehicle body 7 via the spring 91.
Is provided near the handle 39 at the rear part of the traveling vehicle body 7.

[0005]

In the seedling-planting machine constructed as described above, the traveling body 7 is supported by a pair of left and right wheels 5 on the front side and a pair of left and right wheels 6 on the rear side. The operator controls the aircraft at a position behind the steering handle 39 at the rear of the traveling vehicle body 7. Then, the traveling vehicle body 7 travels forward, and the seedling-planting tool 72 of the seedling-planting device 40 operates, whereby the seedling is transplanted to the ridge. The seedling plant 40 is rotatably mounted around horizontal axes 43 and 44 disposed forward of the rear wheel 6 axle, and is located rearward of the rear wheel 6 axle.
0 can move up and down with respect to the traveling vehicle body 7, and
The seedling plant 4 is supported by a supporting device 82 provided at the rear of the seedling plant 40.
0 is supported by the ridge, and the seedling plant 40 is elastically attached to the traveling vehicle body 7 by a spring 91 provided between a portion near the handle 39 at the rear portion of the seedling device 40 and a portion near the handle 39 at the rear portion of the traveling vehicle body 7. Supported. Thus, the seedling plant 40 moves up and down so that the supporting device 82 is in contact with the ridge and maintains a constant height with respect to the ridge.
1 and is elastically supported by the traveling vehicle body 7 through the support device 8
The ground contact load of No. 2 is greatly reduced. Further, the operator at the rear of the traveling vehicle body 7 operates the lever 92 provided near the steering handle 39 to operate the spring 9.
The grounding load of the support device 82 is adjusted by adjusting the support load of the seedling planting device 40 supported by the traveling vehicle body 7 via the first vehicle body 1.

[0006]

Therefore, according to the present invention, the traveling vehicle body 7
Is provided so as to be supported on the ridges by the support device 82. Therefore, even if the traveling vehicle body 7 moves up and down due to unevenness of the ground, the seedling transplantation device 40 is supported by the support device. 82 so as to maintain the ground contact state with the ridges, the planting depth is less likely to fluctuate.
Is elastically supported by the traveling vehicle body 7 via the spring 91, so that the contact load of the support device 82 is reduced, and the contact mark of the support device 82 hardly remains even in the case of soft field ridges in the soil. Further, the seedling plant 40 is rotatably mounted around horizontal axes 43 and 44 disposed forward of the axle of the rear wheel 6, and the seedling plant 40 located rearward of the axle of the rear wheel 6. The rear portion of the seedling plant 40 is configured to be able to move up and down with respect to the traveling vehicle body 7, and the seedling plant 40 is attached to the traveling vehicle body 7 between a portion near the handle 39 at the rear portion of the seedling plant 40 and a portion near the handle 39 at the rear portion of the traveling vehicle body 7. Spring 91 for elastic support
Is provided, the front-rear length from the vertical pivot point of the seedling-planting device 40 to the mounting point of the spring 91 is sufficiently ensured, and the elastic supporting force of the spring 91 can be precisely adjusted. Further, since the lever 92 for adjusting the supporting load of the seedling plant 40 supported by the traveling vehicle body 7 via the spring 91 is provided near the handle 39 at the rear of the traveling vehicle body 7, the lever 92 is located behind the handle 39 and the grounding wheel is grounded. An operator who confirms the state of the trace can easily and quickly operate, and the ground contact load of the support device 82 can be adjusted accurately, easily, and quickly according to the hardness or the like of the soil. Further, since the supporting device 82 for supporting the seedling planting device 40 on the ridge is provided at the rear of the seedling planting device 40 located behind the axle of the rear wheel 6, the seedling planting device 4 is provided.
The front-rear length from the vertical pivot point of 0 to the contact point of the support device 82 is also sufficiently ensured, and the vertical movement of the seedling plant 40 is performed lightly, and the contact mark at the time of vertical movement of the seedling plant 40 also occurs. Hateful. Since the seedling plant 72 is also provided on the rear side of the seedling plant 40, the front-rear length from the vertical rotation fulcrum of the seedling plant 40 to the seedling plant 72 is sufficiently secured.
The change of the front and rear posture of the seedling planting tool 72 during up and down can be suppressed small,
The planting posture of the seedlings can be favorably maintained.

[0007]

Next, an embodiment of the present invention will be described. As shown in FIGS. 1, 2, 3, and 4, the engine 2 is fixed in front of the main gear box 1, and the transmission case 3 and the support frame 4 extend rearward from both sides of the main gear box 1. A traveling vehicle body 7 is constituted by a pair of left and right driving wheels 5 and auxiliary wheels 6 arranged on the front and rear sides, respectively. The driving wheel 5 and the auxiliary wheel 6 are provided so as to pass through the valley A of the ridge.

A pair of wheel cases 8 are mounted on both sides of the main gear box 1 so as to be rotatable around a horizontal axis. The wheel cases 8 extend obliquely rearward and downward, and the driving wheels 5
Is provided. The power of the engine 2 is a centrifugal clutch 9
And transmitted to the small gear 10 through the large gear 11 and the worm 1
2 and after passing through the left and right side clutches 14 from the worm wheel 13, it reaches the driving wheels 5 through the inside of the wheel case 8 (FIG. 4).

A pair of brackets 15 are fixed downward to the rear ends of the transmission case 3 and the support frame 4, respectively.
6 extend outward, and upper ends of the supporting legs 17 of the auxiliary wheels 6 are rotatably mounted on the respective supporting shafts 16. A vertical cylinder 18 is mounted between the transmission case 3 and the support frame 4, and a rear end of the piston rod 19 protruding rearward from the cylinder 18 is fixedly provided at the center of the horizontal rod 20. A pair of arms 21 extend upward from the tip of each wheel case 8, the upper end of the left arm 21 is connected to the left end of the horizontal rod 20 by a rod 22, and a rotating cylinder 23 is attached to the upper end of the right arm 21. The rear end of the piston rod 24 extending from here is connected to the right end of the horizontal rod 20. A pair of arms 25 protrude upward from the respective supporting legs 17, the upper end of the left arm 25 is connected to the left end of the horizontal rod 20 by a rod 26a, and the upper end of the right arm 25 is connected to the rear of the cylinder 23 by a rod 26b. ing.

The oil discharged from the pump 27 is sent into the cylinder 18 by switching the oil path by the valve 28, and the piston rod 19 is moved up and down, so that the driving wheel 5 and the auxiliary wheel 6 can be simultaneously moved up and down. I have. The oil discharged from the pump 29 is sent into the cylinder 23 by switching the oil path by the valve 30, and protrudes and retracts the piston rod 24, and the right drive wheel 5
And the auxiliary wheels 6 are moved up and down.

A shaft 31 is mounted on the bracket 15, and is provided on the shaft 31 so that the tip of an arm 32 projecting forward can be moved up and down by a lever 33. Top of ridge B
The tip of a sensor 34 that slides on the arm 32 is rotatably attached to the tip of an arm 32 with a pin 35, and the tip of an arm 36 extending upward from the tip is connected to the valve 28 by a rod 37.

When the valley A through which the drive wheel 5 and the auxiliary wheel 6 pass is deep, the body of the traveling vehicle body 7 (the bracket 1)
5) goes down. Then, the rear end of the sensor 34 is pushed up at the top B, the arm 36 turns counterclockwise, and the rod 37
Pushes valve 28. At this time, the oil discharged from the pump 27 enters the left chamber of the cylinder 18, the piston rod 19 protrudes rearward, and the horizontal rod 20 moves rearward. Therefore, each arm 21 is pulled backward by the rod 22 and the integral cylinder 23 and piston rod 24, each arm 25 is pulled forward by the rods 26a and 26b, and the wheel case 8 and the supporting leg 17 are turned clockwise. Moving and driving wheels 5
And the auxiliary wheel 6 descends. That is, the body of the traveling vehicle body 7 is lifted by the cylinder 18 and returns to a certain height from the top B of the ridge. When valley A comes to a shallow place, it operates in reverse. Further, by operating the lever 33, the support plate 38 is operated.
When the latching position is changed with respect to (FIGS. 2 and 5), the position of the pin 35 is adjusted up and down, so that the distance between the traveling body and the top B of the ridge can be selected.

The valve 30 is manually operated in the figure, and is operated when the ridges are provided along the contour line in the inclined field, to keep the body of the traveling vehicle body 7 horizontal. An inclination sensor is provided on the body of the traveling vehicle body 7, and a signal from this sensor is used to control the valve 3
It can also be configured automatically so that 0 operates.
A forked handle 39 with a rear end is fixedly provided on the right bracket 15, so that the operator can operate while walking.

A seedling plant 40 is mounted on the traveling vehicle body 7 so as to be movable up and down. That is, the rotating case 41 and the rotating frame 42 are located at the rear ends of the transmission case 3 and the support frame 4, respectively, and are rotatably mounted on the horizontal transmission shaft 43 and the rotating shaft 44, respectively. A transmission case 45 extends rearward from the rotating case 41, and a lateral transmission case 46 is fixed to a rear end of the transmission case 45. A planting case 47 extends obliquely upward from the rear. Rotating frame 4
The rear end of the planting case 47 is connected to the rear end of the planting case 47 by a connection frame 48, which forms a U-shaped planting frame as viewed from above, and the transmission shaft 43 and a rotating shaft concentric with the transmission shaft 43. It rotates around 44.

As shown in FIG. 4, a large gear 50 meshes with a small gear 49 which rotates integrally with the worm wheel 13,
A chain 53 is wound around a tooth wheel 51 that rotates integrally with the tooth wheel and a tooth wheel 52 fixed to the transmission shaft 43. A tooth wheel 54 is fixed to the transmission shaft 43 in the rotating case 41 so that the rotation of the traveling vehicle body 7 is transmitted to the seedling plant 40. The rotation reaches the main drive shaft 55 in the transmission case 46 through the transmission case 45.

As shown in FIG. 1, the support rod 56 is
, And a roller 57 is provided at the tip. A lateral receiving plate 58 is fixed to the planting case 47, and the seedling mounting table 59 is supported by this and the roller 57 so as to move left and right. As shown in FIG. 4, a chain 63 is wound around a tooth wheel 61 fixed to the lead cam 60 and a tooth wheel 62 fixed to the driving shaft 55, and the rotation of the driving shaft 55 causes the lead cam 60 to rotate. Is reciprocated right and left.

A first rotating case 64 is rotatably mounted inside the rear end of the planting case 47, and has a tooth wheel 6 integral therewith.
A chain 67 is wound around the toothed wheel 5 and the toothed wheel 66 of the driving shaft 55, and the first rotating case 64 is configured to rotate clockwise in FIG. The second rotating case 68 is rotatably attached to the side surface of the first rotating case 64, and the planetary gear 69 fixed thereto engages with the non-rotating sun gear 71 via the intermediate gear 70, and the first rotating case 64 It is designed to rotate counterclockwise. Then, due to the number of teeth of the sun gear 71 and the planetary gear 69, the second rotating case 68 faces rearward when the first turning case 64 faces front and rear, and the second rotation case when the first rotating case 64 faces up and down. The case 68 is arranged on an extension of the case.

A seedling plant 72 is rotatably attached to the side surface of the second rotating case 68 and is fixed to a tip gear 73 thereof. The tip gear 73 meshes with a base gear 75 integral with the first rotating case 64 via the intermediate gear 74 so that the second rotating case 68 keeps the same posture with respect to the ground when rotating. As shown in FIG. 1, the seedling-planting tool 72 includes a pair of claws 76 that open and close in the left and right directions and a pushing tool 77 that moves up and down, and is configured to operate with a cam that is integral with the second rotating case 68. .

That is, the seedling mounting table 59 reciprocates right and left with the seedlings placed thereon. Seedling plant 72 is revolving vertically in a long orbit. When the seedling-planting tool 72 passes through the seedling opening of the receiving plate 58 during the downward movement, one plant of the seedling pushed out from the seedling mounting table 59 onto the receiving plate 58 is pinched by the right and left claws 76. When reaching the lower end by lowering, the right and left claws 76 are opened, and the pushing tool 77 is lowered to push the seedling into the ground. It should be noted that the seedlings at the end of the seedling mounting table 59 are taken out one by one in the horizontal direction in this way, and when there are no seedlings in this row, the seedlings in the front are pushed backward by the lower feed belt in the figure. .

As shown in FIGS. 1 and 5, the tip of an L-shaped support rod 78 as viewed from above is rotatably attached to the lower abdomen of the planting case 47 by a lateral pin 79. A vertical rod 80 is fixed to the end of the support rod 78 at the center position of the seedling plant 40, and an axle 81 is fixed to the lower end of the vertical rod 80, and a pair of left and right wheels 82 is attached to this to become a support device. , Passing through the top B of the ridge. Note that this support device may be configured by a sled instead of the wheel.

A female screw rod 83 is attached to the left of the support rod 78, and a bracket 84 protrudes rearward from the mounting case 47.
The female screw rod 85 is rotatably attached to the female screw rod 85.
Is screwed into the female screw rod 83, and when the male screw rod 85 is rotated, the screwing depth changes and the wheel 82 moves up and down (the planting depth of the seedling is adjusted). A support bar 86 extends inward from the handle 39 and ends with a sector plate 8.
7 is fixed vertically. The tip of the arm 88 is rotatably mounted on the fan-shaped plate 87, and the height of the rear end is changed by selecting the mounting hole 89. A lever 90 is provided on the vertical rod 80, and both ends of a spring 91 are attached to the lever 90 and the rear end of the arm 88, and most of the weight of the seedling plant 40 is supported by the traveling vehicle body 7 via the spring 91. It is made as follows. When the seedling planter is driven up and down on a slope, or when the weight of the seedlings is different, the position of the arm 88 is adjusted, and the load shared by the wheels 82 is adjusted. The arm 88 can be configured so that a one-touch operation can be performed with the lever 92.

As shown in FIG. 1, the support rod 93 is
And both ends of the spring 94 have their tips and the seedling
The rotating seedling plant 72 is lifted by a spring 94 so as to kill the play of the seedling plant 72 based on the backlash of the gears in the rotating cases 64 and 68. Figure 1
As shown in FIG. 6, a drilling tool and a covering tool are provided on the lower abdomen of the seedling plant 40. That is, the transmission case 46
The ends of a pair of upper and lower links 96 and 67 are rotatably mounted on horizontal shafts 98 and 99 on a support plate 95 integrated with the above, and a hole making claw 100 provided at the rear end thereof is provided so as to move up and down in parallel. A roller 101 is mounted in the middle of the upper link 96, and when the hole forming cam 102 fixed to the main driving shaft 55 rotates counterclockwise to push down the roller 101, the links 96, 9
7 descends against the spring 103, and the hole making claw 100 protrudes into the top B of the ridge to form a hole, and then, as described above, the seedling-planting tool 72 places a seedling in this hole. Transplant.

The ends of a pair of left and right operating rods 104 bent into an L shape are rotatably mounted on the support plate 95. A leaf spring 1 is provided at the rear end of each operating rod 104.
A pressing ring 106 having a spherical shape is provided through the opening 05. The lever 107 extends upward from the distal end of the operating rod 104, and the spring 1
08 and the pressing wheel 106 is pulled up. The roller 109 provided at the upper end of the lever 107 is used to cover the soil cam 1 fixed to the driving shaft 55.
When pressed at 10, the pressing wheel 106 descends and pushes the soil beside the hole inward. In particular, the cover cam 110 is bifurcated when viewed from the side, and the protrusion 11
When 0a pushes down the roller 109, as shown in FIG.
The left and right pressing wheels 106 push the soil slightly behind the seedling C toward the center, and then rise, and then the rear projection 110
When b pushes down the roller 109, the traveling vehicle body 7 is moving forward, so that the left and right pressing wheels 106 push the soil slightly forward of the seedling C toward the center. The distal ends of the operating rods 104 are attached to the support plate 95 in a C-shape when viewed from the rear, so that the left and right pressing wheels 106 descend while moving inward from the outside.

As shown in FIG. 8, it is effective to move the pin 82, which is the pivot of the sensor 34, and the wheel 82 up and down in conjunction with each other. That is, the upper end of the downward cylinder 111 is rotatably attached to the bracket 84, and the piston 112 projecting upward from the axle 81 is housed therein, and is provided so as to be pressed down by the spring 113. Upper end of piston 112 and arm 3
2 and the front part is connected by a wire 114. Then, when the lever 33 is operated to move the position of the pin 35 up and down, at the same time, the piston 112 moves up and down and the wheel 82 moves up and down. For this reason, a vertical posture of the transplanted seedling is always ensured.

As shown in FIG. 9, in order to make the structure of the spring 94 that raises the seedling-planting tool 72 and kills its play compact,
You can take the following measures: That is, the box-shaped support 115 extends upward from the vehicle frame 48 and the shaft 11 at the upper end thereof.
6, four pulleys 117 are rotatably mounted.
A moving frame 118 is slidably housed under the moving frame 118 and the spring 11
It is pulled down at 9. Four pulleys 120 are rotatably mounted on a shaft 121 on the upper part of the moving frame 118. Then, after a wire 122 having one end fixed to the right pulley 120 is wound around the upper and lower pulleys 117 and 120, respectively, the other end is fixed to the seedling plant 72 via the rolling wheel 123 in front of the column 115. Have been. Therefore, when the seedling-planting tool 72 turns vertically in a long orbit, the moving frame 118 moves up and down against the spring 119, but the moving amount of the moving frame 118 is larger than the moving amount of the seedling-planting tool 72. Is significantly reduced, resulting in a compact configuration.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling planter according to the present invention.

FIG. 2 is a plan view of a part of the seedling transplanter.

FIG. 3 is an explanatory view showing an outline of a seedling planter.

FIG. 4 is a diagram of a transmission mechanism of a seedling transplanter.

FIG. 5 is a rear view of a part of the seedling plant;

FIG. 6 is an enlarged side view of a hole and a covering portion of the seedling planter.

FIG. 7 is a plan view of a part of a soil covering part of the seedling planter.

FIG. 8 is an explanatory view showing another embodiment of a sensor and wheels (supporting device).

FIG. 9 is a cut-away side view showing another embodiment of a device for lifting a seedling plant.

[Explanation of symbols]

 Reference Signs List 5 wheels (drive wheels) 6 wheels (auxiliary wheels) 7 traveling vehicle body 39 handle 40 seedling plant 43 horizontal axis (transmission shaft) 44 horizontal axis (rotation axis) 72 seedling plant 82 support device (wheel) 91 spring 92 lever

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Motoyuki Suzuki 1-Family Yachikura, Tobe-cho, Iyo-gun, Ehime Pref.

Claims (1)

[Claims] 1. A steering handle 39 is provided at the rear of a traveling body 7 having a pair of left and right wheels 5 on the front side and a pair of left and right wheels 6 on the rear side. Seedling plant 40 equipped with a seedling planting tool 72 for transplanting seedlings to ridges on the rear side
A horizontal axis 43, which is disposed forward of the axle of the rear wheel 6,
The rear part of the seedling plant 40, which is mounted to be rotatable around 44 and is located behind the axle of the rear wheel 6, is configured to be vertically movable with respect to the traveling vehicle body 7. A supporting device 82 for supporting the seedling plant 40 on the ridges is provided, and a seedling plant 4 is provided between a portion near the handle 39 at the rear of the seedling plant 40 and a portion near the handle 39 at the rear of the traveling vehicle body 7.
A spring 91 for elastically supporting the vehicle body 7 on the traveling body 7 is provided, and a lever 92 for adjusting the support load of the seedling plant 40 supported by the traveling body 7 via the spring 91 is provided near the handle 39 at the rear of the traveling body 7. A seedling transplanter characterized by being provided in a plant.