JP2000157009A - Self-propelled seed tuber transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject transplanter capable of continually planting seed tubers at a constant pitch even if a driving wheel is slipped. SOLUTION: This self-propelled seed tuber transplanter is so designed as to have a planting section F equipped with a bucket B extending in the longitudinal direction A of the machine body and a bucket conveying mechanism E for conveying the bucket B along looped caterpillars D around the central axis C extending in the longitudinal direction of the machine body and allow seed tubers loaded on the bucket B at the upper end position to spontaneously fall off the bucket B while it moves to the lower end position; wherein the bucket conveying mechanism E has a rolling wheel G rolling on the ground surface during the travel of this transplanter and a power transmission mechanism H transmitting the torque of the rolling wheel G as driving force for moving the bucket B along the looped caterpillars D; the bucket B is conveyed interlockingly with the rotation of the rolling wheel G rolling on the ground surface, namely, the travel speed of this transplanter; therefore, even if the driving wheel is slipped or the like, seed tubers I can be continually planted in furrows J at a constant pitch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled seed potato transplanter capable of planting seed potatoes in a line at a constant pitch.

[0002]

2. Description of the Related Art A self-propelled seed potato transplanter includes a body, front wheels attached to the front of the body, left and right drive wheels attached to the right and left rear sides of the body, a prime mover and a driving force of the prime mover. It is configured to include a driving force transmitting mechanism for transmitting to driving wheels, and a seed potion planting unit. At the time of transplanting the seed potatoes, the wheels should straddle the ridges to be planted, and in this state, the seed potato transplanter should be run along the ridges, and the seed potatoes should be planted in a row at a constant pitch along the grooves formed in the ridges. It has become.

[0003] Such a self-propelled seed potato transplanter does not have a steering mechanism for changing the direction, and when changing the running direction, the steering wheel at the rear of the body is pushed down to support the drive wheels. The front wheel side is lifted, and the aircraft is turned in this state to change the direction.

[0004] The seed potato planting section has a plurality of buckets extending in the longitudinal direction of the fuselage, and the buckets are maintained at a constant interval along a loop-shaped endless track centered on a central axis extending in the longitudinal direction of the fuselage. And a bucket transport mechanism for moving the bucket. As a driving source of the bucket transport mechanism, a rotational force of a driving wheel is generally used.

[0005]

However, the ground, such as a field for planting seed potatoes, has irregularities and is often on soft ground, so that the drive wheels often slip. When the drive wheel slips, the rotation speed of the drive wheel and
The relationship between the actual running speed of the seed potato transplanter will fluctuate. Since the bucket of the seed potting portion is also moved by the rotation of the driving wheel, the moving speed of each bucket is changed, and the interval at which the seed potato falls from each bucket into the groove is changed. That is, there is a problem that the seed potato cannot be transplanted into the groove at a constant pitch.

[0006] Next, the seed potatoes are generally thick cut potatoes cut to a fixed length, but there are also elongated seed potatoes having irregular lengths. However, conventional seed potato transplanters are manufactured for cut potatoes cut to a certain length, and there is no suggestion of a plant with a planting section suitable for transplanting elongated and irregular length seed potatoes. It has not been.

[0007] On the other hand, a self-propelled seed potato transplanter not provided with a steering device for turning the direction turns the body about the rear wheel as a fulcrum as described above. However, there is a problem that such an operation is difficult even for an adult man.

An object of the present invention is to provide a self-propelled seed potato transplanter capable of planting seed potatoes at a fixed pitch regardless of the slip of a drive wheel.

Another object of the present invention is to propose a self-propelled seed potato transplanter capable of planting a thick seed potato having a fixed length and an elongated seed potato having an irregular length at a fixed pitch.

Another object of the present invention is to propose a self-propelled seed potato transplanter which can plant seed potatoes at a fixed pitch and can relatively easily perform a direction changing operation.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, the present invention comprises a bucket B extending in a longitudinal direction A of a vehicle;
A seedling portion F provided with a bucket transport mechanism E for transporting the bucket B along a looped endless path D centered on a central axis C extending in the longitudinal direction of the fuselage; Self-propelled seed potato transplanter that naturally falls from the bucket while the bucket moves to the lower end position, the bucket transport mechanism E includes a rolling wheel G that rolls on a ground contact surface during traveling, and the rolling wheel G And a power transmission mechanism H that transmits the rotational force of the bucket B as a driving force for moving the bucket B along the looped endless track D.

In the self-propelled seed potato transplanter of the present invention, the transport of the bucket B is performed in synchronization with the rotation of the rolling wheel G rolling on the ground contact surface, that is, the running speed. Therefore,
Even if the driving wheel slips, the seed potato I is always kept at a constant pitch.
Can be planted in the groove J.

Here, as the seed potato I, a cut potato I1 cut to a fixed length and an elongated seed potato I2 of irregular length.
In order to be able to plant both,
As the bucket B, a bucket B1 having a wide opening width for a thick cut potato and a bucket B having a wide opening width for a slender seed potato
It is desirable to have 2 and 3.

Further, if the position of the seed potato I on which the bucket is placed fluctuates back and forth, it will appear as a pitch fluctuation of the seed potato planted as it is, so that the position of the seed potato on the bucket B in the front-back direction is constant. In order to achieve the above, it is desirable to adopt a configuration in which a dam plate K is attached to the front end of the body of the bucket B, to which the tip of the seed potato placed on the bucket B contacts.

On the other hand, the self-propelled seed potato transplanter of the present invention is of a type not provided with a steering mechanism for changing directions,
Front wheels are rotatably mounted on the front side of the fuselage, drive wheels are mounted on the left and right sides of the rear side of the fuselage, a prime mover and a driving force transmission mechanism are mounted between these left and right drive wheels, and at the rear end of the body. Is equipped with an airframe lifting handle extending rearward. The present invention is characterized in that the body lifting handle is extendable rearward with respect to the body.

At the time of turning, if the handle for lifting the fuselage is extended rearward, the distance from the drive wheel serving as a fulcrum to the handle becomes longer, so that the force required to lift the front wheel is reduced by the leverage principle. Therefore, the direction change operation can be performed relatively easily as compared with the conventional transplanter.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of a self-propelled seed potato transplanter to which the present invention is applied will be specifically described with reference to FIGS.

(Overall Configuration) FIGS. 2 and 3 are a schematic side view and a schematic plan view, respectively, of the self-propelled seed potato transplanter of this embodiment.
With reference to these drawings, the seed potato transplanter 1 is of a type not provided with a steering mechanism for changing the direction, and is provided with a body frame 2 and a front end of the body frame 2 in a body width direction. Rotation center axis 3 mounted horizontally
Between the left and right front wheels 4L and 4R attached to both ends of the body frame 2, the left and right drive wheels 5L and 5R attached to the left and right of the rear part of the body frame 2, and the left and right drive wheels 5L and 5R of the body frame 2. The vehicle includes a prime mover 6 mounted at a position and a transmission mechanism 7 for transmitting the driving force of the prime mover 6 to the left and right drive wheels 5L, 5R.

A seat 8 is mounted at a middle position of the body frame 2 in the front-rear direction, and steering pedals 9L and 9R are arranged at left and right positions forward of the seat 8. When these steering pedals 9L, 9R are depressed, the rotation center axis 3 of the front wheels 4L, 4R turns back and forth around the center position in the width direction. As a result, the traveling direction can be corrected so as to be along the ridge. In addition,
A clutch pedal (not shown) for stopping traveling in an emergency or the like is arranged at a side position of the right steering pedal 4R.

A shift lever 1 is provided on the rear side of the seat 8.
1 is attached, and the shift speed can be switched by operating the shift lever 11;
It is also possible to switch to the reverse stage. The motor 6
The driving force transmission mechanism 7 has the same structure as that generally used in an agricultural work vehicle, and thus the description thereof is omitted in this specification.

Next, a vertical frame 12 extending in the width direction is attached to the rear end of the body frame 2, and the left and right upper ends of the vertical frame 12 have a body extending horizontally rearward. A lifting handle frame 13 is attached. As will be described later, this body lifting handle frame 1
The length of the arm extending rearward from the third vertical frame 12 can be extended.

The left and right side clutch levers 18L and 18R are attached to the handle frame 13 for lifting the body. These side clutch levers 18L, 18
R is connected to a side clutch (not shown) inside the driving force transmission mechanism 7 via clutch wires 19L and 19R. By operating these side clutch levers, the driving of the left and right driving wheels can be selectively stopped, and the traveling direction can be changed to the left and right.

On the other hand, at a position between the seat 8 and the front wheels 4L, 4R in the body frame 2, a tubular planting portion 20 is attached to the center in the body width direction in the front-rear direction. A pair of left and right rolling wheels 21L and 21R are arranged on both sides of the planting portion 20. The planting portion 20 and the rolling wheels 21 </ b> L and 21 </ b> R are attached to the body frame 2 so as to be able to swing up and down.

Further, at the left and right positions of the seat 8, seed pots 17L, 17R projecting sideways from the body frame 2 are provided.
Is detachably attached.

A plow blade 14 is formed on the lower surface of the body frame 2 between the left and right front wheels 4L, 4R to form a crop groove in the ridge. A rod 15 extends horizontally from the front end of the body frame 2 toward the front, and a chain 16 is suspended from the tip of the rod 15. This chain 16 functions as an index for determining the traveling direction.

(Structure of Planting Portion) FIGS. 4A and 4B show the planting portion 20 taken out. FIG. 4A is a schematic side view, FIG. 4B is a front view when viewed from the front side,
(C) is a schematic configuration diagram showing only the power transmission system taken out when viewed from above.

As shown in these figures, the planting section 20 of the present embodiment basically has a plurality of buckets 31 extending in the longitudinal direction of the vehicle and a center axis C extending the buckets 31 in the longitudinal direction of the vehicle. And a bucket transport mechanism 40 for transporting the seeds on the bucket 31 at the upper end position and attaching the seed potatoes to the ridges from the bucket while the bucket moves to the lower end position. It falls naturally in the planting groove at a constant pitch in the running direction.

The bucket transport mechanism 40 applies the above-mentioned left and right rolling wheels 21L and 21R that roll on the ground during traveling and the rotational force of these rolling wheels 21L and 21R along the looped endless track D of the bucket 31. And a power transmission mechanism 50 for transmitting the driving force for the movement.

More specifically, the planting section 20 has a planting section frame 201 composed of a pair of horizontal frames extending in the front-rear direction along both sides of the body frame and a connecting frame connecting these horizontal frames. The planting section frame 201 is attached to the body frame 2 so as to be able to swing up and down around the front end 201a.

The planting frame 201 which can swing up and down rotates the rotating shaft 5 of the pair of rolling wheels 21L and 21R.
1 is also rotatably supported. Therefore, the rolling wheel 21
Since L and 21R are always pressed against the ground by their own weight, even if the ground is uneven,
Rolling on the ground is performed in conjunction with the traveling of the transplanter 1. For example, the planting section frame 201 has its front end 2
01a is attached to the body frame 2 so as to be rotatable up and down, and a rear end portion thereof is suspended from the body frame 2 by a chain or the like.

The bucket conveying mechanism 40 attached to the planting section frame 201 has driving sprockets 43a and 43b and driven sprockets 44a and 44 attached to the front and rear ends of rotating shafts 41 and 42 arranged vertically in parallel.
b between the sprockets 43a and 44a located on the front upper and lower sides and between the sprockets 43b and 44b located on the rear upper and lower sides, respectively. Have been. A plurality of buckets 31 are bridged between the chains 45a and 45b so as to extend horizontally at predetermined intervals in the longitudinal direction of the fuselage. As the bucket 31, buckets 31a having a wide opening width for thick cut potatoes and buckets 31b having a wide opening width for elongated seed potatoes are alternately arranged.

Each of the buckets 31a and 31b is open outward, so that when the buckets 31a and 31b are conveyed along the endless track D by the respective chains 45a and 45b, the buckets 31a and 31b assume an upwardly open posture when reaching the upper end position. You can put the seed potato here. While the buckets 31a and 31b are being conveyed toward the lower end position, the buckets 31a and 31b open downward from the side, and the seed potatoes on the buckets naturally fall from here onto the ground.

At the front end side of each of the buckets 31a and 31b, a damping plate 46 having an L-shaped cross section having an inverted U shape as a whole is attached. Is in a closed state at the front end of each bucket. In addition, each bucket 31
A guide plate 47 is attached to a side position of the movement trajectory of the a and 31b, and the seed plate placed on each of the buckets 31a and 31b is moved by the guide plate 47 until the seed potato is conveyed to a position close to the ground. It does not fall from the bucket.

Next, the structure of the driving force transmission mechanism 50 for obtaining the driving force for transporting the bucket from the rotation of the rolling wheels 21L and 21R will be described. This driving force transmission mechanism 50
Includes a sprocket 52 attached to a rotating shaft 51 of a rolling wheel 21L, and a chain 54 that transmits the rotation of the sprocket 52 to a gear box 53. The gear box 53 includes, for example, a pair of bevel gears 53a and 53b. ,
The rotational force transmitted from the chain 54 is transmitted to the bucket driving upper rotating shaft 41 extending in the front-rear direction.

In the planting section 20 configured as described above, when the seed potato transplanter 1 starts running, the rolling wheels 21L and 21R that are in contact with the ground rotate. This rotation is performed via the rotation shaft 51 and the driving force transmission mechanism 50,
It is transmitted to the upper rotating shaft 41 of the bucket. As a result, each of the buckets 31a and 31b is
5b is conveyed along a looped endless track D that is long in the vertical direction.

The bucket 31a conveyed to the upper end,
When the seed potato is placed on 31b, each bucket 31a, 31b moves downward along the guide plate 47. When placing the seed potato, the front end of the seed potato is pressed against the damming plate 46, so that the position on the bucket is always constant. Bucket 31
When a and 31b move away from the lower end of the guide plate 47 and reach near the lower end position, the seed potatoes in the buckets 31a and 31b naturally fall from the bucket by their own weight and fall into the planting grooves located thereunder.

The transport speed of the buckets 31a and 31b is always synchronized with the traveling speed of the seed potato transplanter 1 even when the drive wheels 5L and 5R slip. Therefore, seed potatoes can always be transplanted at a constant pitch.

Further, since the position of the seed potato in the bucket in the front-back direction is defined by the dam plate 46, the seed potato is placed at different positions in the front and rear in each bucket. The adverse effect that the pitch of the image fluctuates is also avoided.

Furthermore, in this example, buckets 31a and 31b suitable for placing thick cut potatoes of uniform length and elongated seed potatoes of irregular length are attached as buckets. Work can also be performed appropriately.

The driving force transmitting mechanism 50 for transmitting the rotational force of the rolling wheels is not limited to the structure of the present embodiment, and other mechanisms may be employed.

(Structure of Aircraft Lifting Handle) FIG. 5 shows a part of the aircraft lifting handle 13 taken out. The handle 13 for lifting the fuselage of the present embodiment has its front end attached to the vertical frame 12 by connecting pipes 131 and 132. The connecting pipes 131 and 132 have
A pin hole 133 is formed at one location. On the other hand, the body lifting handle 1 inserted here
A pin hole (not shown) is formed at a plurality of places in the front end portion of 3.

Accordingly, by inserting a connecting pin (not shown) in accordance with the pin hole 133 of the connecting pipes 131 and 132 and the pin hole of one of the handle 13 for lifting the body, the handle 13 for lifting the body is vertically framed. By changing the position of the pin hole into which the connecting pin is inserted, the length of the horizontal arm of the body lifting handle 13 can be expanded or contracted.

Accordingly, if the body lifting handle 13 is set to be the longest during the turning operation, the lifting operation becomes relatively easy, and the turning operation is also facilitated. It should be noted that the telescopic mechanism of the body lifting handle 13 may be any mechanism other than the above.

[0044]

As described above, in the self-propelled seed potato transplanter of the present invention, the seed potting portion is not used by the driving wheels but by the rotational force of the rolling wheels that roll on the ground as the vehicle travels. The bucket is transported. Therefore, unlike the case of the conventional planting part using the rotational force of the drive wheel, even when the drive wheel slips, the seed potato can always be transplanted at a constant pitch.

Further, according to the present invention, since each of the buckets is provided with a bucket suitable for planting a cut potato cut into a fixed length and a slender seed potato having an irregular length, any of the seed potatoes is suitable. Can be planted.

Further, in the present invention, since the damming plate is attached to the front end of the bucket, the position of the seed pot on which the bucket is placed can be prevented from fluctuating back and forth, so that the seed potting pitch due to such a variation can be prevented. Variation can be prevented.

On the other hand, in the self-propelled seed potato transplanter of the present invention, since the handle for lifting the direction of the body can be extended rearward of the body, the operation of lifting the front wheel with the rear wheel as a fulcrum during the direction change can be compared. Can be easily done.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a planting unit in a self-propelled seed potato transplanter according to the present invention.

FIG. 2 is a schematic side view of a self-propelled potato transplanter to which the present invention is applied.

FIG. 3 is a schematic plan view of the seed potato transplanter of FIG.

4A and 4B are diagrams showing the planting portion of the seed potato transplanter of FIG. 2 taken out, wherein FIG. 4A is a schematic side view, FIG. 4B is a front view when viewed from the front side, and FIG. FIG. 3 is a schematic configuration diagram showing only the power transmission system in a case where the power transmission system is used.

FIG. 5 is an explanatory view showing a handle portion for lifting the body of the seed potato transplanter of FIG. 2;

[Explanation of symbols]

 Reference Signs List A Aircraft longitudinal direction B, B1, B2 Bucket C Center axis D Looped endless track E Bucket transport mechanism F Planting part G Rolling wheel H Power transmission mechanism I, I1, I2 Seed potion J Groove K Damper plate 1 Self-propelled potato Transplanting machine 2 Body frame 13 Handle for body lifting 20 Planting part 201 Planting part frame 21L, 21R Rolling wheel

Claims (4)

[Claims] 1. A planting section comprising: a bucket extending in a longitudinal direction of a machine body; and a bucket transport mechanism for moving the bucket along a looped endless track centered on a central axis extending in the longitudinal direction of the machine, In a self-propelled seed potato transplanter that naturally drops a seed potato placed on a bucket at an upper end position from the bucket while the bucket moves to a lower end position, the bucket transport mechanism includes a rolling wheel that rolls on a ground contact surface during traveling. And a power transmission mechanism for transmitting the rotational force of the rolling wheels as a driving force for moving the bucket along a looped endless track. 2. The self-propelled seed potato transplanter according to claim 1, wherein the bucket comprises a bucket having a narrow opening width and a bucket having a wide opening width. 3. The self-propelled seed potato transplanter according to claim 1, wherein a damming plate against which a tip of a seed potato placed on the bucket is attached is attached to a front end of the bucket body. 4. The vehicle according to claim 1, wherein a front wheel is rotatably mounted on a front side of the body, and drive wheels are mounted on left and right sides on a rear side of the body. A prime mover and a driving force transmission mechanism are mounted therebetween, and a rear body lifting handle extending rearward is attached to a rear end of the vehicle body, and the vehicle lifting handle is extendable rearward with respect to the vehicle body. A self-propelled seed potato transplanter characterized in that: