JPH07147806A - Transplanter - Google Patents

Abstract

PURPOSE:To provide a transplanter capable of planting seedlings in a definite depth in carrying out transplanting operation. CONSTITUTION:A seedling transplanting part 16 for carrying out planting operation of seedlings is mechanically separated from a traveling car body 1 propelling a machine body and the seedling transplanting part 16 is supported by a supporting wheel 29 traveling on the levee face different from a propelling wheel 5 of a traveling car body 1 and the seedling transplanting part 16 is rotatably connected to the traveling car body 1 by a coupling base shaft 12. Thereby, the seedling transplanting part 16 is constituted vertically freely movably to the traveling car body 1. Whenever the height of levee changes during planting traveling, the height of the seedling transplanting part itself from the levee is kept constant, because this height is not changed by rotating the seedling-transplanting part 16 around the coupling base shaft 12 to vertically move the seedling transplanting part 16. As a result, the seedlings can be planted in a definite depth.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter for fields.

[0002]

2. Description of the Related Art A wide variety of seedling transplanters have been developed according to the variety of crops. As a conventional example, FIG. 11 shows a transplanter for vegetables and tobacco (for example, Japanese Examined Patent Publication 57). -37282).

Reference numeral 101 in FIG. 11 is a vertically movable transplanting claw whose front and rear ends are opened and closed. Above this, a seedling supply rotary table 103 having a plurality of seedling supply cylinders 102 arranged on the same circumference is installed. The operator takes the seedlings from the seedling placing table 107 and throws them into the seedling supply cylinder 102 one by one while moving the machine forward with the handle 104 (leftward in the figure).

Reference numeral 105 denotes an engine, which drives wheels 106 by the power of the engine and moves the transplanting nail 101 up and down while intermittently rotating the seedling supply turntable 103 at regular intervals.

When the transplanted nail 101 is raised, the seedling supply cylinder 10
The bottom plate of 2 automatically opens, and the seedling falls into the transplant nail 101. The transplanting nail 101 holds this seedling and descends, releases the seedling by opening the tip at the bottom dead point to release the seedling and perform transplantation.

[0006] After that, the transplanted nail 101 rises while closing the open tip, at the same time, the seedling supply rotary table 103 rotates by a certain angle, and the adjacent seedling supply cylinder 102 looks directly above the transplanted nail 101. And from this new seedling supply cylinder 102, transplant nail 1
01 receives the seedlings, descends again, and similarly plants next to the previous seedlings.

[0007]

In this way, the seedlings are planted in a row on the top of the ridges while the transplanting machine is running along the ridges.
At the beginning of the planting operation, the operator hydraulically moves the axle of the wheel 106 upwards or downwards to pre-adjust the height of the machine of the transplanter and thereby the transplant nail. The bottom dead center position of 101 is set according to the type of crop, and the planting depth of seedlings is determined.

When the planting work is started, the operator is busy supplying seedlings and cannot afford to adjust the height of the transplanter's body again. Therefore, the height of the planter must be constant during the planting work. , In many cases, the height of the ridges is not constant,
The position of the bottom dead center of the transplanted nail 101 with respect to the ground surface changes depending on the height of the ridge. For this reason, conventionally, seedlings may be planted too deep or too shallow during the work, and there is a problem that it is difficult to continue planting to the depth set at the beginning.

The present invention solves these conventional problems, and an object thereof is to plant seedlings at a certain depth without requiring a troublesome operation even when the heights of the ridges are uneven.

[0010]

According to the present invention, among the conventional transplanters, a seedling planting section for planting seedlings and a traveling vehicle body for propelling the machine are mechanically independent, and the seedling planting section is a ridge. It is supported by a dedicated support wheel that runs on the surface,
It is characterized in that both are rotatably connected by a connecting base, and the seedling planting portion is configured to be vertically movable with respect to the traveling vehicle body.

The connecting base shaft is attached to the chassis frame at the front of the traveling vehicle body. Then, the seedling planting portion is connected to the undercarriage frame so as to be vertically movable around this connecting base shaft as a fulcrum, and the seedling supplying rotary base of the seedling planting portion located behind the connecting base shaft is connected to the driving seat on the traveling vehicle body. Peek forward.

In the seedling planting section, a vertically movable transplanting nail is provided below the seedling feeding rotary table, and a seedling feeding cylinder for feeding seedlings to the transplanting nail is provided on the same circumference on the seedling feeding rotary table. A plurality of free-standing support wheels that are arranged on the bottom of the seedling planting section are provided.

A power transmission system for transmitting the power of the engine mounted on the traveling vehicle body to the seedling planting section through the connecting base shaft is provided, and the power of the engine causes the seedling supply turntable to be intermittent at regular intervals. Simultaneously with the rotation, the transplanting claws are moved up and down to plant the seedlings in the seedling supply cylinder.

[0014]

As described above, according to the present invention, the seedling planting portion is independently supported and configured to be movable up and down with respect to the traveling vehicle body. Therefore, even if the height of the ridges changes, the height of the ridges changes. The seedling planting part turns around the connecting base axis, and the height of the seedling planting part itself with respect to the ridge is constant and does not change.

Therefore, the seedlings can be planted at a constant depth without the troublesome operation of re-adjusting the height of the traveling vehicle body during the work.

[0016]

1 is a self-propelled traveling vehicle body, and 2 is its engine. As shown in FIG. 2, reference numeral 3 denotes a chassis frame provided on the left and right of the traveling vehicle body 1, on which a pair of turning cylinders 4 and 4 are rotatably mounted horizontally. Swivel cylinders 4, 4
Turns hydraulically independently on the left and right.

Reference numeral 5 denotes left and right propulsion wheels driven by the engine 2. The propulsion wheel 5 has one end pivotally supported on the other end side of the swing support leg 6 fixed to the outer end of the swivel cylinder 4, and a transmission chain incorporated in the swing support leg 6 causes the axle of the propelling wheel 5 to move. It is connected to a propulsion shaft (not shown) inserted through the inside.

Reference numeral 7 denotes a conical guide wheel, which is rotatably supported on the front part of the traveling vehicle body 1 and is connected to the lower side of the swing support leg 6 via a link 8. A driver's seat 9 is installed in the middle of the left and right propulsion wheels 5. Reference numeral 10 is a steering wheel for walking, and 11 is a hitch for attaching balance weights.

A connecting base shaft 12 is horizontally mounted on the front part of the chassis frame 3, and a transmission chain 14 is stretched between one end of the connecting base shaft 12 and an intermediate shaft 13 at the center of the chassis frame 3. The intermediate shaft 13 is connected to the engine 2. Reference numeral 15 denotes a chain cover of the transmission chain 14. The intermediate shaft 13 and the transmission chain 14 form a power transmission system.

Reference numeral 16 is a seedling planting section, which is a seedling supply rotary table 17
And a transplanted nail 18. The connecting base shaft 12 is rotatably inserted into the front end portion of the seedling planting portion 16, whereby the seedling planting portion 16 is connected to the traveling vehicle body 1 so as to be vertically movable (see FIG. 5), and the seedlings rearward of the connecting base shaft 12 are connected. Supply turntable 1
7 is seen in front of the driver's seat 9.

A plurality of seedling supply cylinders 19 for supplying seedlings to the transplanting nails 18 are arranged on the seedling supply rotary table 17 on the same circumference, and a bottom plate 20 which can be opened and closed is attached to each seedling supply cylinder 19 ( (See FIGS. 3 and 4). Reference numeral 21 denotes an opening spring that opens the bottom plate 20, and 22 denotes a rotary shaft installed at the center of the seedling supply rotary table 17.

The transplanting nail 18 has a beak-shaped structure that opens and closes in the front-rear direction, and has a sharp tip installed downward. 23 is a transplanted nail 18
With a traction spring that closes the
In addition, a seedling receiving tube 24 whose upper end is connected to the upper part of the transplanting nail 18
, And fix each.

Reference numeral 25 denotes a mission case, which penetrates the connecting base shaft 12 in the lower part thereof and is connected to the output shaft 26 in the upper part thereof.
Tell the rotation of. Then, the claw arm 27 attached to the output shaft 26 is connected to the transplanting claw 18 via the elevating link 28, and the output shaft 26 is connected to the rotary shaft 22 of the seedling supply rotary table 17 via a transmission mechanism (not shown). (See FIGS. 3 and 4).

Reference numeral 29 denotes a pair of left and right support wheels installed on the bottom of the seedling planting section 16, which are arranged on the left and right of the transplanting nail 18, and the upper part of which is tilted outwardly and pivotally supported (see FIG. 6). Support wheel 29
A leveling roll 30 is provided in front of. The heights of the support wheel 29 and the leveling roll 30 are adjustable. Leveling roll 30
Instead of, the grounding plate having a V-shape in plan view may be attached.

Support arms 31 are extended from the chassis frame 3 to the left and right of the traveling vehicle body 1, and at each tip thereof, a long and long rectangular seedling stand 32, which is stacked in two steps, can be rotated outward by 90 degrees. Attach (see FIGS. 7 and 8).

Then, vertical and horizontal grids are formed in the same rectangular seedling box 33 as the seedling mounting table 32, and one seedling is grown for each grid (see FIGS. 9 and 10). Place 33 together on the seedling placing table 32.

First, the operator operates the transplanter by holding the handle 10 so that the propulsion wheels 5 are located in the left and right grooves of the ridge and the guide wheels 7 are located in the hem of the ridge, and the transplanter is straddled over the ridge. set.

Then, the turning cylinders 4 and 4 are hydraulically rotated, whereby the rocking support leg 6 is rotated around the turning cylinder 4, and the propulsion wheels 5 are raised or lowered with respect to the chassis frame 3 to move the traveling vehicle body. Adjust the height of 1. The guide wheel 7 ascends or descends by the link 8 in conjunction with the propelling wheel 5, and keeps the front-back posture of the traveling vehicle body 1 horizontal. When the field is a sloping ground, the swivel cylinders 4 and 4 are swiveled separately to lower the valley-side propulsion wheels 5 lower and, on the contrary, raise the mountain-side propulsion wheels 5 higher. Keep horizontal.

The power of the engine 2 is transmitted to the axle of the propulsion wheel 5 via the propulsion shaft of the turning cylinder 4 and the transmission chain of the swing support leg 6 to move the traveling vehicle body 1 forward (leftward in FIG. 1). At this time, the conical peripheral surface of the guide wheel 7 rolls on the inclined surface of the ridge and guides the traveling vehicle body 1 along the ridge.
Sit in the driver's seat and concentrate on seedling supply. When getting on and off the driver's seat 9, it is convenient to rotate the seedling placing table 32 by 90 degrees outward so that a wide passage can be secured (see FIG. 7).

On the other hand, the seedling planting section 16 includes the intermediate shaft 13,
The power of the engine 2 is received via the transmission chain 14, the connecting base shaft 12, and the output shaft 26 of the mission case 25. As a result, the rotary shaft 22 of the seedling supply rotary table 17 is intermittently rotated by a fixed angle to move the seedling supply cylinder 19, and when the seedling supply cylinder 19 comes right above the transplanting nail 18, the bottom plate 20 loses its support. It is opened downward by the traction spring 23.

The seedlings in the seedling supply cylinder 19 are in the standby nail 18 for transplantation.
Then, it is stored in the seedling receiving tube 24. Transplant nail 1
While holding this seedling, 8 moves downward while maintaining a vertical posture by the action of the elevating link 28, plunging a sharp tip into the ground at the top of the ridge, and at the same time opens and releases the seedling. As a result, seedlings are planted.

Thereafter, the transplanted nail 18 rises while gradually closing the open tip and returns to the original standby position. When the transplanting nail 18 returns, the seedling supply rotary table 17 rotates by a certain angle to move the adjacent seedling supplying cylinder 19 directly above the transplanting nail 18, and the bottom plate 20 thereof opens. As a result, new seedlings are supplied to the transplanted nail 18, and the transplanted nail 18 descends again to plant this seedling. Since the vehicle body 1 has moved forward since the previous planting, new seedlings are planted at regular intervals from the previous planting, and the seedlings are planted in line along the crests of the ridges.

When the planting operation is repeated in this manner, the locus of the raising and lowering stroke of the transplanting nail 18 is elliptic so that the tip of the implanting nail 18 does not drag the ground to cut the mulch film coated on the ridge.

The support wheels 29 roll on the left and right of the seedling immediately after planting, and the weight of the seedling planting portion 16 suppresses the root of the seedling. When the left and right support wheels 29 are installed in a wide V shape when viewed from the top, the support wheels 29 can also be grounded. The leveling roll 30 rolls the top surface of the ridge to level the front of the seedling immediately before planting.

In the empty seedling supply cylinder 19 in which the seedlings have been planted, the seedlings are taken out one by one from the seedling box 33 of the seedling placing table 32 while sitting in the driver's seat 9, and are sequentially supplied.

By the way, generally, the heights of the ridges are not uniform and are not constant. Some are high and some are low. Therefore, for example, when the transplanter approaches a low ridge, the traveling vehicle body 1 is entirely raised with the top surface of the ridge as a reference, and the position of the connecting base shaft 12 is increased (see FIG. 5). On the contrary, at a high ridge, the traveling vehicle body 1 is lowered as a whole, and the position of the connecting base shaft 12 is lowered.

In such a case, in the embodiment of the present invention, the seedling planting portion 16 is vertically movably connected to the traveling vehicle body 1 via the connecting base shaft 12, and the weight of the seedling planting portion 16 is set at the top of the ridge. Since it is supported by the rolling support wheel 29,
When the position of the connecting base shaft 12 changes, the seedling planting portion 16 turns around the connecting base shaft 12 and moves up or down with respect to the traveling vehicle body 1. Therefore, even if the ridge becomes higher or lower in the middle, the seedling planting portion 16 for the top surface of the ridge
The position of does not change. Therefore, the planting depth of the seedlings is kept constant regardless of the height of the ridges. Further, since only the load of the seedling planting portion 16 is applied to the support wheel 29, the support wheel 2
The squeezing force by 9 is constant regardless of the height of the ridges, and the seedlings are evenly attached.

As described above, in the embodiment shown in the drawings, the seedling planting portion 16 is vertically movably connected to the traveling vehicle body 1. However, appropriate locking means such as bolts are provided in parallel so that the soil quality of the ridge surface is If the seedling planting portion 16 is fixed to the traveling vehicle body 1 by using the locking means when it is hard, the seedling planting portion 16 is prevented from rising due to the reaction force of the transplanting nail 18 received from the ridge surface, and the transplanting nail 18 is sufficiently secured. It is convenient because it is possible to dig deep into the soil and plant seedlings at a predetermined depth.

Further, if a locking projection is projected to the side of the planting section 16 and engaged with an appropriate portion of the traveling vehicle body 1, the seedling planting section 16 is restricted so as not to be lowered below the engaging position. When the vehicle is traveled on the road with the wheels 5 lowered to increase the vehicle height, the seedling planting portion 16 floats above the ground together with the traveling vehicle body 1, so that the tip of the transplanting claw 18 can be prevented from coming into contact with the ground and being damaged.

[0040]

In summary, according to the present invention, the seedling planting portion 16 is connected to the traveling vehicle body 1 so as to be vertically movable, and further the dedicated support wheel 29 for rolling the top surface of the ridges is used for the seedling planting portion 16. Therefore, even if the height of the ridges increases or decreases during planting, the seedling planting portion 16 turns around the connecting base shaft 12 in accordance with the height of the ridges and the seedling planting portion itself for the ridge surface. The height of is constant and does not change.

Therefore, the seedlings can be planted at a constant depth without the troublesome operation of re-adjusting the height of the traveling vehicle body 1 during the work.

Moreover, in the present invention, the connecting base shaft 1 of the turning center is used.
Since the power of the engine 2 is transmitted to the seedling planting portion 16 via the power transmission system via 2, there is an effect that a simple structure of the power transmission system is sufficient.

Further, in the present invention, since the side portion of the planted seedling is squeezed by the support ring 29, it is possible to squeeze the seedling with a constant pressure, there is no excess or deficiency in the squeezing strength, and there is an effect that the seedlings are evenly attached.

Further, according to the present invention, since the seedling feeding turntable 17 of the seedling planting section 16 is viewed in front of the driver's seat 9 of the traveling vehicle body 1, the seedling feed turntable 17 of the driver's seat 9 is seated while sitting on the driver's seat 9. There is also an effect that it is easy to supply seedlings to the seedling supply cylinder 19.

[Brief description of drawings]

FIG. 1 is an overall side view of a transplanter embodying the present invention.

FIG. 2 is an overall plan view of the transplanter shown in FIG. 1, with a part omitted.

3 is an explanatory view of the operation of a seedling feeding rotary table and a transplant nail of the transplanter of FIG. 1, showing a state where the transplant nail is raised.

FIG. 4 is an explanatory view of the operation of a seedling feeding rotary table and a transplant nail of the transplanter of FIG. 1, and is a diagram showing a state where the transplant nail is lowered.

FIG. 5 is an operation explanatory view of a seedling planting portion of the transplanter of FIG.

FIG. 6 is an operation explanatory view when the support wheel of the transplanter of FIG. 1 is viewed from the front.

7 is a plan view of a seedling table and a driver's seat of the transplanter of FIG. 1, and a phantom line shows how the seedling table rotates.

FIG. 8 is a side view of a seedling table of the transplanter of FIG.

FIG. 9 is a plan view of a seedling box used in the transplanter of the present invention.

10 is a cross-sectional view of the seedling box of FIG.

FIG. 11 is an overall side view of a conventional transplanter.

[Explanation of symbols]

 1 Running Car Body 2 Engine 3 Chassis Frame 5 Propulsion Wheel 7 Guide Wheel 9 Driver's Seat 12 Connecting Base Shaft 13 Intermediate Shaft 14 Transmission Chain 16 Seedling Planting Part 17 Seedling Supply Rotating Base 18 Graft Claw 19 Seedling Supply Tube 25 Mission Case 26 Output Axis 28 Lifting Link 29 Support wheel 30 Leveling roll 32 Seedling stand 33 Seedling box

Claims (1)

[Claims] 1. A self-propelled traveling vehicle equipped with an engine is equipped with a connecting base shaft on a front frame of a vehicle body, and the seedling planting part is connected to the chassis frame so as to be vertically movable around the connecting base shaft as a fulcrum. Seed the seedling feeding rotary table of the seedling planting portion located behind the base axis in front of the driver's seat on the traveling vehicle body, and in the seedling planting portion, a vertically movable transplanting claw of the seedling feeding rotary table. A plurality of seedling feeding cylinders for feeding seedlings to the transplanted nails are arranged on the same circumference on the seedling feeding turntable, and further, a free-wheeling support wheel for rolling the ridges is provided on the lower portion. Provided at the bottom of the seedling planting part, and equipped with a power transmission system for transmitting the power of the engine to the seedling planting part via the connecting base shaft, and by the power of the engine, the seedling supply turntable. Intermittent rotation at fixed angles and transplantation By lifting a transplanter, characterized in that planting seedlings seedlings supply cylinder.