JP2003210010A - Seedling transplanter - Google Patents

Abstract

(57) [Summary] [PROBLEMS] When a drive for raising and lowering a seedling planting tool is temporarily stopped by a clutch at its top dead center, a brake is applied so that the seedling planting tool does not descend due to its own weight. -In a seedling transplanter equipped with a keying device, even if the seedling inoculation tool is temporarily stopped at the top dead center, the descent operation is unstable due to the weight of the seedling inoculation tool when descending. Then, there was a problem that a change in the descending speed occurred and an appropriate descending speed could not be obtained. SOLUTION: The present invention relates to a seedling planting tool for periodically raising and lowering, supplying seedlings near a top dead center of a vertical movement and rushing into soil near a bottom dead center to plant seedlings. A clutch for stopping the seedling planting tool near the top dead center of the seedling planting tool to be provided, and a brake device for braking the operation of the seedling planting tool by its own weight or inertia in a stopped state by this clutch, This brake device is characterized in that it is provided with a descent braking means for applying a braking force in a descent stroke of the seedling planting tool.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a seedling transplanter for transplanting seedlings of vegetables and the like, and belongs to the technical field of agricultural machinery.

[0002]

2. Description of the Related Art Seedlings having a structure in which a planting device moves up and down periodically, supplies seedlings at the top dead center of its ascending / descending process, and plunges into the soil at the bottom dead center to plant seedlings. There is a transplant machine. Also,
In this seedling transplanter, when the seedling planting tool reaches the top dead center,
A brake is provided to temporarily stop the raising and lowering drive of the seedling planting tool, and a brake is provided to prevent the seedling planting tool from descending due to the weight of the seedling planting tool when the driving by the clutch is stopped.
Some devices have a device.

[0003]

In the prior art, even if the seedling planting tool is temporarily stopped at the top dead center, the descending operation is not possible due to the large weight of the seedling planting tool when descending. There was a problem that it became unstable and the descending speed changed, and an appropriate descending speed could not be obtained.

In view of the above problems, the present invention has as its main object to optimize the descending speed by providing descending braking means for the seedling planting equipment.

[0005]

The present invention takes the following technical means in order to solve the above problems. That is,
The present invention as set forth in claim 1 is a seedling planting tool which moves up and down cyclically and is supplied with seedlings near the top dead center of the lift and plunges into the soil near the bottom dead center to plant seedlings. A clutch for stopping the seedling planting tool near the top dead center of the raising and lowering seedling planting implement is provided, and a brake device for braking the operation of the seedling planting implement by its own weight or inertia when stopped by this clutch is provided. This breaking device is characterized by being provided with a descending braking means for applying a braking force in the descending stroke of the seedling planting implement.

When the seedling planting tool reaches a predetermined stop position at the top dead center, the clutch is disengaged and the rotational power to the planting drive shaft is cut off. At this time, the breaker device operates to brake the seedling planting tool at a predetermined stop position, and when the seedling planting tool descends, the descending braking means brakes the seedling planting tool to near the bottom dead center. As a result, the descending speed of the seedling planting device can be appropriately maintained, and the stability of the descending operation is improved.

The present invention according to claim 2 is a seedling planting tool for raising and lowering periodically, supplying seedlings near the top dead center of raising and lowering, and plunging into the soil near the bottom dead center for planting seedlings. A brake for stopping the seedling planting tool near the top dead center of the raising and lowering seedling planting tool, and a brake for braking the operation of the seedling planting tool by its own weight or inertia in a stopped state by the clutch. A device is provided, and the braking device is provided with a pre-braking means for applying a braking force before the stop position of the seedling planting implement.

[0008] When the seedling planting device rises and comes to a position near a predetermined stop position near top dead center, the pre-braking means of the braking device is activated to start braking, and the braking is performed even after the stop by the clutch. To maintain the action. This ensures that the seedling planting tool stops at the predetermined stop position.

[0009]

In summary, according to the invention of claim 1, when the seedling planting implement is lowered, the braking force is applied by the descending braking means from near the top dead center to near the bottom dead center. The descending operation is stable, and the descending speed can be optimized.

Further, the device can be made compact by also using the braking means, and the cost can be reduced by reducing the number of parts. According to the invention of claim 2, since the braking force is applied by the pre-braking means from the front side of the stop position of the seedling planting tool, the seedling planting tool can be stopped reliably and accurately at a predetermined stop position. Smooth supply of seedlings to planting equipment.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to the drawings. FIG. 1 and FIG. 2 show a walk-behind seedling transplanter 1. This walk-behind seedling transplanter 1 is mainly a vehicle body 1a.
The front part of the engine 2 and the main transmission case 3 and a pair of left and right front wheels 4 and 4 and rear wheels 5 and 5 as traveling wheels, and the rear part of the seedling planting device 6, the seedling supply device 7, the soil cover crushing wheel 8 and And a steering wheel 9. This seedling transplanting machine 1 has the front wheels 4, 4 and the rear wheels 5, so that the machine straddles the ridges in the field.
5 runs in the ridges, and seedlings are planted by the above-mentioned seedling planting device 6 in the left and right center of the upper surface of the ridges.

At the left and right ends of the main transmission case 3, the main transmission case is provided.
Travel extension case 1 rotatable with respect to the space 3
0 and 10 are provided respectively on the left and right sides, and traveling chain cases 11 and 11 are fixedly provided at the respective ends of the left and right traveling extension cases 10 and 10. Therefore,
The power in the main transmission case 3 input from the engine 2 is transmitted to the traveling chain cases 11, 11.

A pair of left and right rear wheels 5 and 5, which are traveling wheels, are attached to the inside of the left and right sides of the pivoting tips of the traveling chain cases 11 and 11, respectively.
The aircraft is designed to run when driven. Therefore, the main transmission case 3 is a transmission device that is transmitted to the rear wheels 5 and 5 as traveling wheels. On the other hand, a front wheel support frame 12 extending in the left-right direction is provided rotatably around a rolling shaft 13 in the front-rear direction at the lower part of the engine mounting table, and front wheels 4 are provided at both left and right ends of the front wheel support frame 12. , 4 are attached.

The left and right traveling extension cases 1
Nos. 0 and 10 are configured to expand and contract in the left and right lateral directions (the rear wheel drive shaft also expands and contracts at the same time), and the treads of the rear wheels 5 and 5 are adjusted by expanding and contracting in the left and right directions. Also,
The front wheel support frame 12 is provided so that it can be expanded and contracted to the left and right, and the treads of the left and right front wheels 4 and 4 can be adjusted.

At the rear of the left and right frames 14, a main frame 15 extending to the right is provided. A steering handle 9 is provided at the rear end of the main frame 15, and the steering handle 9 is supported by the main transmission case 3 via the main frame 15.

A hydraulic lift cylinder 16 is provided at the center of the rear portion of the main transmission case 3 in the left-right direction. The hydraulic lifting cylinder 16 is fixedly provided to a hydraulic switching valve unit 17 fixed to the main transmission case 3, and switches the hydraulic pressure from a hydraulic pump 18 fixed to the main transmission case 3 to the hydraulic switching valve unit. It operates by operating the lifting operation valve provided in 17. Horizontal rods 19 extending in the left-right direction are provided at the cylinder rod ends of the hydraulic lifting cylinder 16, and rear wheel lifting rods 20, 21 are pivotally attached to the left and right ends of the horizontal rods 19, respectively.
At the other end of 1, run extension case 1
0, 10 are pivotally attached to the upper arms 10a, 10a fixed to the horizontal rods 19 and the traveling extension case 1.
0 and 10 are connected together. Therefore, the traveling chain cases 11 and 11 are rotated around the left and right output shafts of the main transmission case 3 through the horizontal rod 19 and the rear wheel lifting rods 20 and 21 by the expansion and contraction of the hydraulic lifting cylinder 16. When the traveling chain cases 11 and 11 are moved, the rear wheels 5 and 5 are moved up and down and the machine body is moved up and down. Further, a horizontal hydraulic cylinder 22 that is operated by hydraulic pressure from the hydraulic pump 18 is provided in the middle of the left rear wheel lifting rod 20 so as to expand and contract, and the horizontal hydraulic cylinder 22 expands and contracts. The left rear wheel 5 is moved up and down with respect to the vertical position of the right rear wheel 5 so that the body can be maintained horizontally regardless of the unevenness of the valley portion of the ridge. A pendulum type left and right inclination sensor 23 is provided on the right side of the main transmission case 3, and the horizontal operation valve provided on the hydraulic pressure switching valve section 17 is detected by the left and right inclination sensor 23 for horizontal movement. The hydraulic cylinder 22 is operated to keep the machine body horizontal.

In the seedling planting device 6, the power from the main transmission case 3 is used to plant seedlings in the field.
Transmission via a planted mission case 24 provided on the rear side of the plant, a first planted transmission case 25A and a second planted transmission case 25B, which are interlockingly driven by the planted mission case 24. It is designed to work.

The seedling planting device 6 is composed of a beak-shaped seedling planting tool 26 whose lower part opens and closes forward and backward, and a planting tool actuating mechanism 27 which operates to raise and lower the planting tool 26. The seedling planting tool 26 includes a front member 26 a and a rear member 26 b, and a front member rotating shaft 28 located behind the seedling planting tool 26.
A front member 26a is integrally attached to a front member mounting arm 29a that is rotatably supported by a, and is rotatably supported by a rear member rotating shaft 28b located in front of the seedling planting fixture 26. The rear member 26b is integrally attached to the rear member mounting arm 29b. Therefore, the rotary shafts 28a, 28
When both members 26a and 26b rotate about b as a fulcrum, the lower part of the planting tool 26 opens and closes back and forth. The front member 26a and the rear member 26b are interlocked with each other to rotate by the interlocking pin 30 that is loosely fitted in the elongated holes formed in the front member mounting arm 29a and the rear member mounting arm 29b. A front member 26a and a rear member 26 are provided between the leg portion 31a of the front member mounting arm 29a and the leg portion 31b of the rear member mounting arm 29b.
A spring 32 for urging the side b is stretched.

Next, the planting implement operating mechanism 27 will be described. A rear link supporting arm 33a is rotatably attached to a supporting portion projecting from the second planting transmission case 25B, and the supporting arm is supported. The front member rotating shaft 28a is connected to the rear end of the rear link 34a whose base is pivotally attached. After link 3
A rear link drive arm 35a provided at the rear end of the second planted transmission case 25B is connected to the intermediate portion of 4a.
A front link support arm 33b is rotatably attached to the planted mission case 24, and a rear member rotation shaft is provided at the rear end of the front link 34b whose base is pivotally attached to the support arm. 28b are connected. A front link drive arm 35b provided at a rear end portion of the first planted transmission case 25A is connected to an intermediate portion of the front link 34b. Double drive arm 3
When 5a and 35b are driven and rotated, the rear link 34a and the front link 34b swing up and down while changing the position of the base part back and forth, and the seedling planting tool 26 draws an elliptical locus K in the vertical direction and remains in a fixed posture. Move up and down.

An opening / closing arm 36 is provided at the base of the rear link 34a.
Is rotatably mounted, and the front end portion of the opening / closing arm 36 and the front member mounting arm 29a are connected by an opening / closing rod 37. An opening / closing cam 38 is provided at an intermediate portion of the rear link 34a so as to rotate integrally with the rear link driving arm 35a, and a bearing-made cam follower 39 acting on the opening / closing cam 38 is provided on the opening / closing arm 36. It is provided.

When the seedling planting tool 26 is located at the bottom dead center, the opening / closing cam 38 and the cam follower 39 are engaged with each other, whereby the opening / closing rod 37 is pulled, whereby the front member 26a of the seedling planting tool 26 and the rear member 26a. The side members 26b are interlocked with each other to rotate back and forth, and the lower part of the seedling planting tool 26 is opened. In the process of raising the seedling planting fixture 26, the lower part is kept open.
When the cam follower 39 is acting on the opening / closing cam 38, when the seedling planting tool 26 reaches the top dead center, the opening / closing cam 38 and the cam follower 39 are disengaged, and the tension of the spring 32 causes the planting. The lower part of the tool 26 is closed. Also,
When the cam follower 39 is acting on the opening / closing cam 38, the lower part of the seedling planting tool 26 closes at a position where the seedling planting tool 26 is slightly past the top dead center.

When the seedling planting tool 26 is located just past the top dead center, the seedling feeding device 7 drops and feeds the seedlings into the seedling planting tool. At this time, the lower part of the seedling planting tool 26 is closed. The seedling planting tool 26 holding the seedlings descends and plunges into the soil of the ridge. Then, at the bottom dead center, the lower part of the seedling planting tool 26 opens,
A hole for planting seedlings is formed, and the seedling held in the hole is released and transplanted.

The seedling feeding device 7 is provided on the upper side of the seedling planting device 6 and is provided with a seedling feeding turntable 40 for sequentially feeding seedlings such as vegetables to the seedling planting device 6. The seedling supply turntable 40 is provided with the planting mission case 24.
Crank rod 4 that reciprocates back and forth due to power transmission from
First, the unidirectional clutch mechanism 42 is used to intermittently rotate around a vertical rotation shaft 43. Further, the seedling supply turntable 40 has a configuration in which a plurality of seedling supply cups 44 are provided at predetermined intervals along a circumference centered on the rotation shaft 43.

Shutters 45 are provided at the bottoms of the seedling supply cups 44 so as to be openable and closable, and the supply cups 44 are placed at predetermined positions below the supply cups 44 by the rotation of the seedling supply rotary table 40. Only when you come to ...
A supply cup opening / closing guide 46 provided so that the shutter 45 at the bottom of the device is opened is fixedly provided on the machine body side. Therefore, when the seedling supply cups 44 ... Are brought to the predetermined position A by the rotation of the seedling supply turntable 40, the seedling supply cups 44 ...
The shutters 45 ... of the seedlings open and the seedlings in the seedling supply cups 44 ... are dropped and supplied into the seedling planting fixtures 26 below, and the seedling supply rotary base 40 rotates and the seedling supply cups 44 ...
When it comes off, the shutters 45 of the seedling supply cups 44 are closed.

In front of the seedling supply turntable 40, a seedling placing frame 47 for placing seedlings raised in a cell tray together with the cell tray.
Is provided. Then, from the left side of the seedling supply rotary table 40, the worker supplies the pot seedlings on the seedling placing frame 47 one by one into the seedling supply cups 44 ...

In front of the seedling planting device 6, there is provided a ground sensor 48 that adapts to changes in the unevenness of the field and senses the changes in the unevenness. The ground sensor 48 is provided so as to be rotatable about a shaft 49 in the left-right direction, and is connected to the rear of the hydraulic switching valve case 17 via an operation interlocking mechanism 50 as the sensor 48 rotates to ground. By operating the wheel lifting operation valve, the rear wheels 5 and 5 are controlled to be moved up and down by the seedling planting device 6 so that the planting depth of the seedling becomes a predetermined planting depth.

A pair of left and right cover soil suppression wheels 8 are provided at the rear of the seedling planting position, roll the ridges as the machine progresses, and soil around the seedling planting holes after the seedlings are planted. It is designed to collapse and refill the hole and lightly suppress the trace. The transmission structure in the planted mission case 24 will be described. The planted input shaft 51 shown in FIG.
Is supplied with power from the main transmission case 3 via the planted transmission shaft. Then, the input drive sprocket 54 is driven via the bevel gears 52, 53 provided on the planted input shaft 51. The stock drive speed input shaft 57 is driven from the input drive sprocket 54 through the input chain 55 and the input driven sprocket 56. From the stock shift input shaft 57 to the relay drive sprocket 58, the relay chain 59,
The clutch (one-rotation clutch mechanism 62) provided on the planted drive shaft 61 is driven via the relay driven sprocket 60. The one-rotation clutch mechanism 62 has a structure in which the clutch is disengaged every one rotation to stop the rotation of the planting drive shaft 61.
That is, the rotation of the planting drive shaft 61 is interrupted so that the seedling planting tool 26 stops near the top dead center of the raising and lowering seedling planting tool 26.

When the planting drive shaft 61 driven through the one-rotation clutch mechanism 62 makes one revolution, the front link drive arm 35b and the rear link drive arm 35a make one revolution and the seedling planting is performed. The tool 26 moves up and down so as to plant one seedling. A seedling planting tool stopping brake 63 is provided at the end of the planting drive shaft 61. The seedling planting tool stopping brake 63 imparts a minute rotation resistance to the planting drive shaft 61, and when the seedling planting tool 26 descends, the seedling planting tool self-weight causes the seedling planting tool. Prevents the plant from trying to operate prior to driving the planted drive shaft.

The outer end of the planted drive shaft 61 is
A braking device different from the break 63 for stopping the seedling planting tool, that is, a brake for braking the operation of the seedling planting tool 26 by its own weight or inertia in a stopped state by the one-rotation clutch mechanism 62. A device 64 is provided.

The breaking device 64, as shown in FIG.
A brake cam body 65 is fixedly attached to the planting drive shaft 61 so as to rotate integrally with the planting drive shaft 61, and is rotatably supported by a roller support arm 66. The roller support arm 66 is biased by a spring 68 so that the roller 67 is always in contact with the outer peripheral surface of the break cam body 65. The diameter of the break cam body 65 is such that the cam diameter is increased so that the breaking force is strongest from the position before the predetermined stop position of the planting tool 26 to a position slightly beyond the stop position. The large cam surface 65a is used as the small cam surface 65b with a small cam diameter so that the braking force is weakened in the descending stroke of the planting tool 26.

In summary, the cam shape of the brake cam body 65 is, as shown in FIG. 7, in the descending stroke of the planting tool 26, the descending braking range (a) in which the braking force is relatively weakened, and the planting is carried out. In the ascending stroke from the planting position at the bottom dead center of the tool to the stop position at the top dead center, the rising non-braking range (b) where no braking force is applied and the pre-braking range where the braking force starts to gradually increase The configuration is (c). According to such a structure of the break cam body 65, the fixed position stopping braking means and the descending braking means of the planting tool are also used, so that the apparatus can be made compact, the number of parts is reduced and the cost is reduced. Can be achieved.

In FIG. 5, the inter-stock shift input shaft 57 is provided with three inter-stock gear shift input gears 70, 71, 72.
It is designed to rotate together with 7. Further, three inter-stock transmission output gears 73, 74, 75 which mesh with the three inter-stock transmission input gears 70, 71, 72 are provided. The inter-stock transmission output gears 73, 74, 75 are provided slidably along the shafts 76 in the key grooves 73a, 74a, 75a provided in the gears 73, 74, 75 and the stock transmission output shaft 76, respectively. It is configured so as to rotate integrally with the inter-stock transmission output shaft 76 via the slide key 77 that is opened. Therefore, the slide key 77 is slid to select the inter-stock transmission output gears 73, 74, 75 which rotate integrally with the inter-stock transmission output shaft 76, thereby changing the transmission ratio from the inter-stock transmission input shaft 57 to change the inter-stock transmission. The rotation speed of the output shaft 76 is changed. This slide key
77 slides by operating the inter-strain adjustment lever 78. The one-rotation clutch mechanism 62
Is an on-off operation via a planting operation pin 79 provided so as to rotate integrally with the stock output transmission shaft 76, and a planting transmission restricting arm 81 which is rotated around the shaft 80 by abutment of the pin 79. The related configuration is made to let.

The embodiment shown in FIGS. 8 to 12 will be described. First, in FIG. 8, reference numeral 82 denotes a rear wheel transmission shaft, which includes side clutches 83, 83 and traveling chain cases 11, 11.
The rear wheels 5, 5 are configured to be driven through the internal transmission chain. Reference numeral 84 is a main clutch shaft to which power is transmitted from the engine 2 via a series of gear transmission mechanisms, and is provided with a main clutch 85 for turning on / off the driving of the rear wheels 5, 5 and the seedling planting portions 6, 7. That is, the main clutch shaft 84 is configured to be transmitted to the planting input shaft 51 to the seedling planting portions 6 and 7 via the inter-plant speed change shaft 86 and the planting transmission shaft 87, and the main clutch shaft 84 is also used.
Is configured to drive the rear wheels 5, 5 via the main transmission shaft 88 and the rear wheel transmission shaft 82. The main clutch 85 is
It is turned on and off by a clutch arm 90 which is operated by operating the main clutch lever 89.

8 and 9, there is provided a ridge detecting roller 91 located on the front side of the machine body and rolling along the upper surface of the ridge U. The ridge detection roller 91 is configured to drop downward from the upper surface of the ridge when it passes the end of the ridge, and detects in advance that the work for planting one ridge is completed. It is the one. When the ridge detection roller 91 reaches the end of the ridge and falls downward during the work, the clutch arm 90 is operated via the roller arm 92 and the connecting rod 93 to disengage the main clutch 85. "To stop the aircraft from running. Therefore, the operator
Work can be performed safely. Incidentally, it may be associated with the transmission so that the traveling speed is automatically reduced based on the result of the ridge breakage detection by the ridge detection roller. Also,
The ridge detection roller may be provided in a crushing roller portion installed in front of the machine body, and this crushing roller may also serve as the ridge detecting roller.

9 and 10, a tiltable seedling placing frame 47 is provided. The seedling placement frame 47 in this embodiment is rotatable about the horizontal axis 100, and is tiltable so that it can be changed from a horizontal posture to a tilted posture in which the operator M (see FIG. 12) performing the seedling supply work is lowered. I am doing it. Then, the seedling placement frame 47 and the traveling chain case 11 which can be moved up and down are interlockingly connected by the rod 101.

When the container containing the seedlings is placed on the seedling placing frame 47 to perform the work, the seedling placing frame 47 is tilted rearward so that the seedling placing frame 47 is inclined toward the operator M in order to facilitate the taking out of the seedlings from the container. Change to (backward). At this time, during normal work,
Since the rear wheels 5 and 5 are raised and the machine is lowered, the seedling placing frame 4 is interlocked with the rise of the traveling chain case 11.
Since 7 is changed to the backward tilted posture, it is easy for the operator to take out the seedlings from the container and the working efficiency can be improved.

When the machine is turned after the one-step seedling planting work is completed, the rear wheels 5 and 5 are lowered to lift the machine up, so that the container is not dropped from the seedling placing frame. The placing frame 47 is returned to the horizontal posture. At this time,
Since the traveling chain case 11 descends, the seedling placement frame is pulled downward via the rod 101 and becomes horizontal. In this embodiment, the angle of the seedling placement frame can be arbitrarily changed depending on the elevation angle of the traveling chain case 11.

In the embodiment shown in FIG. 11, the damper is
102 is used to constantly urge the seedling placement frame 47 in the inclined posture direction. At the time of seedling planting work, the container 103 accommodating potato seedlings such as taro is placed on the seedling placing frame 47, and the operator removes the seedlings from the container and operates the seedling feeding device 7
, But the weight of the container becomes lighter as the number of seedlings decreases, so that the seedling placing frame 47 is pushed up by the damper 102 and gradually changes from the horizontal posture to the inclined posture. Therefore, as the number of seedlings decreases, the container gradually inclines toward the worker side, so that the seedlings can be easily taken out and the work efficiency can be improved.

In adopting such means, when the worker M carries out seedling supply work from the left side of the machine body as shown in FIG. 12, the left side seedling placing frame 47L and the worker M make the machine body work. When the seedling supply work is performed from the right side, it is preferable that the right side seedling placement frame 47R be configured to be tiltable.

[Brief description of drawings]

[Figure 1] Side view of seedling transplanter

FIG. 2 Same as above

FIG. 3 is a side view showing a planting tool operating mechanism of the seedling planting device.

FIG. 4 is a plan view of the planting implement operating mechanism.

FIG. 5 is a developed cutaway plan view showing a part of the transmission structure in the planted mission case.

FIG. 6 is a side view of the breaking device.

FIG. 7 is a side view showing (a) a lifting operation trajectory of the seedling planting device;
(B) Side view showing the braking range of the brake cam body

[Figure 8] Transmission mechanism diagram of the main part of the seedling transplanter

[Figure 9] Side view of seedling transplanter

[Fig. 10] Side view of the same as above

[Figure 11] Side view of seedling placement frame

[Figure 12] Plan view of seedling transplanter

[Explanation of symbols]

1 Walking Type Seedling Transplanter 1a Body 2 Engine 3 Main Transmission Case 4 Front Wheel 5 Rear Wheel 6 Seedling Planting Device 7 Seedling Supply Device 8 Cover Soil Reducing Wheel 9 Steering Handle 10 Running Extension Case 10a Upper Arm 11 Running Chain Case 16 Rear Wheel Lifting Cylinder-17 Hydraulic Switching Valve Case 18 Hydraulic Pump 26 Planting Tool 51 Planting Input Shaft 61 Planting Drive Shaft 62 1 Rotation Clutch Mechanism 64 Braking Device 65 Blaze
Key cam body 65a Large diameter cam surface 65b Small diameter cam surface 66 Roller support arm 67 Bra
Kyorra (a) Down braking range (b) Up non-braking range (c) Pre-braking range

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shima Victory             3-12-23 Nishi-Osaki, Sanjo City, Niigata Prefecture             Iseki Niigata Factory Co., Ltd. (72) Inventor Shiro Katsuno             No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture             Technology Department Co., Ltd. (72) Inventor Stamp Hajime             No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture             Technology Department Co., Ltd. (72) Inventor Isao Ishida             No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture             Technology Department Co., Ltd. F term (reference) 2B060 AA02 AA06 AC01 AD05 AE01                       BA03 BB05 CA07 CB05 CC05

Claims (2)

[Claims] 1. A seedling planting tool for raising and lowering periodically, supplying seedlings near the top dead center of the raising and lowering and plunging into the soil near the bottom dead center for planting seedlings. A clutch is provided to stop the seedling planting tool near the top dead center of the fixture, and a brake device is provided to stop the operation of the seedling planting fixture due to its own weight or inertia when stopped by this clutch. A seedling transplanter, wherein the device is provided with a descending braking means for applying a braking force in the descending stroke of the seedling planting implement. 2. A seedling planting tool for raising and lowering periodically, supplying seedlings near the top dead center of the raising and lowering and plunging into the soil near the bottom dead center for planting seedlings. A clutch for stopping the seedling planting tool near the top dead center of the fixture is provided, and a brake device for braking the operation of the seedling planting fixture by its own weight or inertia when stopped by the clutch is provided. A seedling transplanter characterized in that the device is provided with a pre-braking means for applying a braking force before the stop position of the seedling planting implement.