JPH05137417A - Bulb-planting machine - Google Patents

Abstract

PURPOSE:To enable the planting of bulbs at a prescribed planting pitch and to decrease the error of planting pitch by opening and closing the bottom of parttioned rooms of a seed bulb tray with plural shutters and changing the opening operation timing of the shutters according to the dropping condition of the seed bulbs. CONSTITUTION:A seed bulb tray having a number of partitioned rooms is placed on a seed bulb table 21 in a longitudinally movable manner. The same number of shutters 42 as the number of the partitioned rooms aligned in the lateral direction of the seed bulb tray are arranged at a seed bulb delivery port 21b. A planting chuter is placed under the shutter and the shutters are successively opened by cam members 46. Each cam member 46 is varied according to the dropping condition of the seed bulbs to decrease the planting pitch error.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bulb sowing machine for sowing seed bulbs such as lacchio.

[0002]

2. Description of the Related Art As a conventional seeding machine for sowing seed bulbs such as lacquer, for example, Japanese Patent Laid-Open No. 3-191704.
It is already known as shown in the publication.

This seeding machine is equipped with a seeding tank and uses a large number of holder pipes. The holder pipes hold seed balls and are housed in the seeding tank, and one holder pipe is provided by a feeding sprocket provided in the tank. On the other hand, the posture of the delivered holder pipe is changed from a horizontal posture to an upright posture by a twist guide, and seeding is performed via a sowing chute.

[0004]

However, when a large number of holder pipes are used as described above, the planting posture of the seed ball can be correctly controlled by the posture management of the holder pipes. Not only the operation of inserting seed balls into the seed tank is required, but also a collection tank for collecting the holder pipe that has been seeded must be provided separately from the seeding tank, and therefore the work becomes complicated, and There was a problem that the structure became complicated.

An object of the present invention is to improve the workability while controlling the seeding posture by using a seed ball tray, simplify the structure, and accommodate the seed ball tray in the seed ball tray even if it is not laterally fed. It is an object of the present invention to provide a bulb seeding machine capable of taking out the seed balls to be seeded one by one and seeding the seed balls, and further, sowing the seeding pitch at a desired pitch while reducing an error in the seeding pitch.

[0006]

In order to achieve the above object, the present invention has a seed ball tray 20 having a large number of compartments 23 for accommodating a large number of seed balls in a partition shape, and the seed ball tray 20 is moved. And a seed ball base 21 that can be mounted on the seed ball base 21.
The seed-bulb outlet 21b of the seed-bulb corresponds to a plurality of compartments 23 partitioned in the width direction of the seed-ball tray 20.
A plurality of shutters 42 for opening and closing the bottom of the shutter 42 are arranged side by side in the machine width direction, and a receiving portion 47 for receiving a seed ball falling by the opening operation of the shutters 42 is provided below the shutter 42 and the receiving portion 47. A seeding shooter 49 including a seeding guide portion 48 that guides the seed bulb to the seeding position in the field is provided, while a shutter drive mechanism that sequentially opens the shutter 42 at the seeding pitch is provided, and the drive mechanism is , A seeding pitch adjusting mechanism for changing the opening operation timing of the shutter 42 according to the falling condition from the shutter 42 to the receiving portion 47.

Further, it is preferable that the shutter drive mechanism includes an opening / closing speed control mechanism that speeds up the opening operation of the shutter 42 and slows down the floor operation.

[0008]

By providing the shutter 42 at the seed ball outlet 21b of the seed ball base 21 on which the seed ball tray 20 having a large number of compartments 23 is movably mounted, the shutter 42 is sequentially opened. , Dropping one seed ball contained in a plurality of compartments 23 provided in the seed ball tray 20,
Since seeding can be performed with the sowing shooter 49, one seeding can be performed by moving the seed ball tray 20 in the longitudinal direction of the seed ball base 21 without laterally feeding the seed ball tray 20, and thus the structure can be simplified. Since the seed ball tray 20 having a large number of compartments 23 is used, the compartment 23 for seed balls is
Can be easily accommodated, the workability thereof can be improved, and the seed balls can be sowed in the compartment 23 without changing the attitude so that the seed balls can be sowed in the same attitude. It can be done.

In addition, the shutter drive mechanism for sequentially opening the shutters 42 at the seeding pitch includes the opening operation timing of the shutters 42 according to the falling conditions when the shutters 42 drop onto the receiving portion 47 of the shooter 49. Since the seeding pitch adjusting mechanism for changing the seeding pitch is provided, it is possible to prevent an error from occurring in the seeding pitch. That is, since the shutters 42 are arranged side by side in the width direction and the receiving portion 47 has a wide width in the direction in which the shutters 42 are arranged, when the shutter 42 is dropped by the opening operation, the receiving portion 47 is arranged in the width direction. The fall conditions differ depending on whether the shutter 42 is located on the center side or the shutters 42 located on both sides in the width direction, and the shutter 42 is open and falls on both sides from the center side to reach the seeding position. Although the time becomes long and an error occurs in the seeding pitch, the seeding pitch error can be reduced by changing the closing operation timing of the shutter 42 according to the falling condition, and the seeding can be performed at a desired seeding pitch. ..

Further, by providing an opening / closing speed control mechanism that speeds up the opening operation of the shutter 42 and slows down the closing operation, it is possible to reduce the deviation of the falling timing even if the seed balls have different sizes, and the seeding pitch due to this deviation. It is possible to reduce the error of (1) and to prevent the falling seed ball from being caught by the shutter 42 that closes.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in the drawings, a rotary 4 is supported at a rear portion of a tractor 1 via a top link 2, a lower link 3 and a lift link (not shown) so that the rotary 4 can be moved up and down. An attachment mounting beam 6 is provided on the rotary frame 5 attached to the top link 2 and the lower link 3, and a cover strut 8 of a rotary cover 7 covering the rear of the rotary 4 is attached to the beam 6 so as to be vertically adjustable. At the same time, the grooving device 10 is attached through the height adjustable grooving support 9, the grooving work is performed by the rotary grooving device 10 after the plowing work, and the ridges formed by this grooving work Seed cells are seeded by a seeding machine described below.

Next, examples of the seeding machine of the present invention will be described.

In the structure shown in the drawings, base frames 11 and 12 extending in the machine width direction are provided in front of and behind the beam 6, and a pair of base frames 11 and 12 facing each other in the machine width direction are provided between the base frames 11 and 12. The gate-shaped frames 13 and 14 are erected so that the mounting positions in the width direction can be changed, and the gate-shaped frames 13 and 14 are inclined downward toward the rear in the front-rear direction, and a seed ball tray is provided on the upper surface. The seed ball base 21 on which the 20 is movably mounted and the seeding section 22 for receiving the seed balls from the seed ball tray 20 mounted on the seed ball base 21 and seeding the ridges are supported. More specifically, the portal frame
The frames 13 and 14 are opposed to each other in the width direction at intervals slightly wider than the width dimension of the seed ball base 20, and the lower end portions thereof are mounted on the upper surfaces of the base frames 11 and 12 so that the mounting positions can be changed. Supporting rods 15 and 16 extending in the width direction are provided on the upper portions of the shaped frames 13 and 13 and extend between the gate-shaped frames 13 and 14, and on the lower portion thereof, extend in the front-rear direction, which will be described later. Wide front and rear frames 17 and 18 for supporting the drive pulley 33 and the motor 31 that hang on the lower side of the conveyor belt 26 are provided, and the front and rear frames 17 and 18 are provided with the gate-shaped frame. The holes 13 and 14 are respectively penetrated and fixed by welding or the like.

A bracket 19 for mounting the seed ball base 21 is provided on top of the portal frames 13 and 14.
Is mounted, and the seed ball base 21 is attached via the bracket 19.
The standing wall 21a is fixed by welding, bolting, or the like, and is installed in a bridge shape between the portal frames 13 and 14.

As shown in FIG. 3, the seed sphere tray 20 has a large number of compartments 23 vertically and horizontally formed in the frame 20a which are opened in the vertical direction and accommodate and hold a large number of seed spheres. The partition chamber 23 is formed by framing a large number of horizontal walls 20b that are vertically partitioned and a large number of vertical walls 20c that are horizontally partitioned, and the seed chamber 21 is formed at the bottom. A bottom wall 25 that intervenes with a contact 24 provided in the lower part of the tilt direction and that is opened is slidably provided.

The seed ball tray 20 may be an integrally molded product of synthetic resin, and the compartment 23 may be formed in an inverted conical shape or an inverted pyramid shape.

Of the compartments 23 adjacent to each other in the longitudinal direction of the tray 20, the longitudinal dimension B of the compartment 23a on the front end side in the moving direction which moves downward in the inclination direction of the seed ball base 21 is the other compartment 23. Is smaller than the vertical dimension A of the seed ball tray 20 so that deviation of the vertical feed pitch at the joint between the preceding seed ball tray 20 and the succeeding seed ball tray 20 that moves downwardly after the tray 20 can be prevented. I have to.

The compartment 23 is provided with a conveyor belt 2 which will be described later.
6, another vertical wall 20d is provided inside the widthwise side wall of the frame body 20a so as not to overlap with the arrangement position of 6, and the partition chamber 23 is formed inwardly of the arrangement position of the transport belt 26, The seed ball housed in the compartment 23 is the bottom wall 2
After the opening of No. 5, it is prevented from being caught on the conveyor belt 26.

Further, the seed ball base 21 has a width dimension capable of arranging a plurality of the seed ball trays 20 in the width direction thereof, and both sides in the width direction stand upright with respect to the upper surface on which the tray 20 is placed. The standing wall 21a to be installed is provided, and the both sides in the width direction and the intermediate portion where the tray 20 is adjacent to each other have the transport projections 26a for forcibly transporting the seed ball tray 20 in the inclined downward direction of the seed ball table 21. A carrier belt 26 is provided.

The transfer belt 26 is mainly composed of a transfer belt, and is installed on the idler pulley 28 provided on the idle shaft 27 installed above the portal frames 13 and 14, and on the front and rear frames 17 and 18. , A drive shaft 3 which is interlocked with a belt drive motor 31 via a worm 29 and a worm gear 30.
It is stretched between the drive pulley 33 provided on
The lower part thereof extends downward from the tilted lower end portion 21b of the seed ball base 21 in the tilting direction. In addition, the seed ball tray 2
No. 0 frame 20a is provided with a driven engagement recess 20e that engages with the transport protrusion 26a provided on the front surface side of the belt, and the seed ball tray 20 is driven by the motor 31.
Are intermittently moved downward with a pitch corresponding to the vertical dimension of the compartment 23 provided in the tray 20.

As shown in FIGS. 2 and 4, a rotary body 34 having a plurality of recesses 34a at intervals corresponding to the vertical feed pitch is provided at the shaft end of the drive shaft 32, and The front-rear frame 17 that supports the motor 31 is provided with a vertical feed detection switch 35 that operates by engaging with the recess 34a. Further, the carrier band 26 provided in the middle part of the seed ball base 21 is a carrier band 26 provided on both sides in the width direction.
The width of the seed ball tray 20 is made wider than that of the seed ball tray 20 and is shared by the seed ball trays 20 that are arranged side by side.

Further, the seed ball base 21 has
When the seed ball tray 20 is stacked on top, the upper tray on the upper part of the stack is locked, and when the lower tray is conveyed downward by a predetermined amount, the upper tray can be dropped onto the upper surface of the seed ball base 21. The tray support 36 thus constructed is installed. The tray support 36 guides the falling seed ball tray 20 to the lower side of the vertical wall 36a for locking the upper tray 20, and tilts all seed balls to be stored in the seed ball tray 20 into the seed ball base 21. So that it can be dropped from the seed ball outlet 21b located at the lower end of the slope of
It is composed of a guide / holding wall 36b for holding the seed ball tray 20 that has moved so as to project downward from the tilted lower end of the seed ball base 21, and both sides in the width direction thereof are set to the standing wall 21a. It is fixed with bolts.

Below the seed ball base 21 in the direction of inclination, it extends rearward and downward from the drive pulley 33 of the conveyor belt 26,
Seed ball outlet 21 located at the lower end of the slope of the seed ball table 21
A tray holding frame 37 for receiving the seed ball tray 20 projecting downward by being moved from b is provided and is attached to an auxiliary frame 38 erected at the rear ends of the front and rear frames 17 and 18, A guide / holding wall 36b of the tray support 36 and the tray holding frame 37 hold the seed ball tray 20 that moves downward in a tilt, and prevent the seed ball tray 20 from dropping due to vibration or the like.

A handle 39 is provided between the upper portions of the portal frames 13 and 14, and a spring (not shown) is provided.
A plurality of pressing rollers 40 that are urged in the direction of the seed ball tray 20 by this to press the stacked seed ball trays 20 downward are attached to the pressing body 41 in a erected manner.

In addition, at the lower end of the tilt of the seed ball base 21,
A grounding rotary wheel that supports the same number of shutters 42 as the number of compartments 23 provided in the width direction of the trays 20 placed side by side on the seed ball base 21 so as to be openable and closable in the machine width direction, and that rotates while grounding in the field. 43 is provided with a shutter drive shaft 45 that interlocks via a flexible shaft 44.
5, a cam body 46 for sequentially opening the shutter 42
Are provided corresponding to the shutters 42, and the shutters 42 are sequentially opened as the drive shaft 45 rotates.

Under the shutters 42, a receiving portion 47 for receiving the seed balls falling by the opening operation of the shutters 42 and a seeding guide portion for guiding the seed balls received by the receiving portion 47 to a seeding position in the field. And a seeding section 22 comprising a plurality of seeding shooters 49 having In FIG. 2, the ground rotation wheels 43 are provided on both sides in the width direction, but only one of them may be provided.

In the above structure, however, the seed ball tray 20 holds two seed balls in the width direction thereof, and the plurality of seed ball trays 20 arranged in parallel on the seed ball table 21. This allows for multi-row sowing.

Therefore, the receiving portion 47 of the seeding shooter 49 has a length which is ½ of the widthwise dimension of the seed ball tray 20, and one receiving portion is provided in the widthwise direction (16 in the drawing). ) Of the compartments 23), half (8 in the drawing) of the compartments 23 are adapted to receive seed balls, and the cam body 46 has the number of seed balls corresponding to the above-mentioned one row. That is, the number (for example, 8) corresponding to one half of the number (for example, 16) in the width direction of the compartments 23 in the seed ball tray 20 described above is combined as one set, for example, 6-row planting. In this case, for example, 6 sets of cam bodies 46, each set of 8 pieces, operate in the same phase.

As shown in FIG. 5, the cam body 46 is formed by forming a cam groove 46b in a disc body 46a, and the shutter 42 is slidably contacted with the outer periphery of the disc body 46a. The actuating body 42a is provided, and the shutter 42 swings to open when the actuating body 42a is fitted into the cam groove 46b. 46b are mutually shifted in phase so that one rotation of the shutter drive shaft 45 causes the eight shutters 42 corresponding to the cam body 46 to sequentially open with a predetermined time difference described below.

That is, the cam groove 4 provided in each of the cam bodies 46.
The phase difference of 6b may be shifted by an equal phase angle in the circumferential direction if the drop conditions are the same, but the shutters 42 are arranged side by side in the width direction, and the receiving portion 47 is arranged side by side with the shutter 42. It is wide in the direction, and this receiving part 4
7 is guided to the center side in the width direction and dropped from the seeding guide portion 48 to the seeding tube 58 to be described later. Therefore, when the cam groove 46b is displaced by an equal phase angle, the width of the receiving portion 47 is increased. When the shutters 42 located on both sides in the direction open and fall, the time required to reach the seeding position becomes longer than when the shutter 42 on the center side opens and falls, and an error occurs in the seeding pitch.

Therefore, the drive mechanism by the cam body 46 for opening the shutter 42 is provided with a seeding pitch adjusting mechanism for adjusting the seeding pitch by changing the opening operation timing of the shutter 42 according to the falling condition. ..

In the embodiment shown in the drawings, the cam body 46 is
Instead of shifting the phase of the cam groove 46b provided at the same angle by an equal phase angle, the opening operation timing of the shutter 42 located on both sides of the receiving portion 47 in the width direction becomes earlier than the opening operation timing of the shutter 42 located on the center side. Thus, the position of the cam groove 46b is shifted rearward in the drive rotation direction of the drive shaft 45.

That is, as shown in FIG.
The time T from the opening operation of the shutter 42 that is opened ahead of the shutter 42 located on both sides in the width direction of 7
Opening time T ₂ of the shutter 42 located on the center side of ₁
The position of the cam groove 46b is displaced rearward in the drive rotation direction of the drive shaft 45 with respect to the position of equal phase angle so as to be shorter.

By doing so, even if the falling conditions are different on both sides in the width direction of the receiving portion 47 and on the center side, that is, even if the time from the opening operation of the shutter 42 to the seeding position is different, the seeding pitch is changed. The error can be eliminated, and all seed balls can be seeded at a desired seed pitch.

In the embodiment shown in the drawings, a spring 50 for urging the shutter 42 in the opening direction is provided between the actuating member 42a of the shutter 42 and the seed ball base 21 as shown in FIG. It has a built-in opening and closing direction control mechanism that speeds up the opening operation and slows the closing operation. In addition to providing the spring 50, this opening / closing speed control mechanism reduces the opening operation side angle θ ₁ with respect to the drawing of the disk body 46a of the groove wall of the cam groove 46b as shown in FIG. It can also be realized by increasing θ ₂ . In this case, it is preferable to use the spring 50 together.

By doing so, even when the size of the seed ball is different, it is possible to reduce the deviation of the falling timing in the opening operation, and it is possible to prevent the falling seed ball from being caught by the shutter 42 that closes during the closing operation. Therefore, the seeding pitch can be sown at a desired seeding pitch with less error in the seeding pitch.

The cam body 46 described above is the cam groove 46.
Although b is provided, it may be a cam projection.

On the back side of the seed ball base 21 on one side in the width direction, as shown in FIG. 2, the opening operation of the final shutter 42 of the shutters 42 opened by the cam body 46 to the final order is performed. An opening operation detector 51 mainly comprising limit switches for detecting is provided. When the opening operation of the final shutter 42 by the detector 51 is performed, the motor 31 for driving the vertical carrying belt 26 and the recess 3 are provided.
The vertical feed pitch set by 4a is used for driving.

Further, the shutter drive shaft 45 is interlocked with the flexible shaft 44 interlocking with the ground rotation wheel 43 through a continuously variable transmission 52,
The seeding pitch can be arbitrarily adjusted by changing the speed of the continuously variable transmission 52.

As shown in FIGS. 2 and 6, the continuously variable transmission 52 includes a disc 53 that rotates in conjunction with the flexible shaft 44 and a ring that frictionally contacts the disc 53 to transmit power. A transmission body 55 having a rubber 54 is supported on the drive shaft 45 so as to be displaceable in the radial direction of the disc 53 in the axial direction of the drive shaft 45, and the transmission body 55 is rocked by a pivot shaft 56. The driving force transmitted from the flexible shaft 44 is adjusted by externally operating the operation lever 57 for movably supporting the disk 53 so that the disk 53 can be adjusted to a desired position in the radial direction. The gear ratio can be transmitted to the drive shaft 45. By changing the speed of the drive shaft 45, the opening operation interval time of the shutter 42 by the cam body 46 is changed and the seeding pitch is adjusted.

Further, as shown in FIG. 7, the seeding shooter 49 disposed below the shutter 42 has the receiving portion 47 which is one of the compartments 23 arranged side by side in the width direction of the tray 20. The seeding guide portion 48, which has a wide width corresponding to the strips and is continuous with the receiving portion 47, has a shape in which the width is gradually reduced toward the lower side. A seeding tube 58 is connected to the outer periphery of the guide portion 48 so as to surround the outer circumference.
So that it can be sown in the field via

The width dimension of the shooter 49 in the front-rear direction, that is, the front-back width when the seed ball falls is shorter than the seed ball length of the seed ball. That is, in the case where the seed ball is vertically long like Rakkyo, it is necessary to sow the seed ball up and down in the vertical direction, and therefore the seed ball is made shorter than the vertical dimension in order to prevent rolling.

Further, as shown in FIG. 1, the shooter 49 has the beam 6 so that its lower portion is inclined forward.
In addition, a guide piece 60 for guiding the seed ball to the center side of the guide portion 48, that is, the seeding tube 58, is supported inside the rear surface which is supported via a supporting rod 59 and is inclined downward. Is provided.

Reference numeral 61 in FIG. 1 is the gate frame.
It is a tray mounting table for the spare seed ball tray 20 provided in the frames 13 and 14, and the space between the beam 6 and the transport band 26 is utilized to store the spare seed ball tray 20.

Next, the operation of the seeding machine configured as described above will be described.

Prior to carrying out the seeding operation, seed balls such as lacchio are housed in the respective compartments 23 of the seed ball tray 20 with the seed ball length in the vertical direction, and the bottom wall 25 is closed. While being placed on the seed ball base 21, the seed ball tray 20 containing the seed balls as described above is stacked above the slope of the tray support 36 as shown in phantom in FIG.

In this state, the plant is advanced to the field, cultivated by the rotary 4, grooved by the grooving device 10, and seeded on the ridge formed by the grooving.

That is, the ground rotation wheel 43 is moved by the progress of the machine body.
Is rotated to rotate the shutter drive shaft 45 at a predetermined gear ratio via the flexible shaft 44 and the continuously variable transmission 52, and the shutter 42 is sequentially opened by the operation of the cam body 46 provided on the drive shaft 45. It works.

That is, by operating one cam body 46 in each of the six sets of cam bodies 46, the first shutter 42 in the six sets of shutter groups is opened, and is housed in the compartment 23 corresponding to this shutter 42. The various balls that were being used fall.

The bottom wall 25 of the seed ball tray 20 is opened by abutting against the abutment 24, and the lower part of the compartment 23 is opened at the lower end of the tilt of the seed ball base 21, that is, the seed ball dropping portion. The upper surface of the seed ball base 21 and the shutter 4
Therefore, the six seed balls contained in each compartment 23 corresponding to the shutter 42 fall by the opening operation of the shutter 42.

The six seed balls thus dropped are received by the receiving portion 47 of each of the seeding shooters 49, and the falling posture from the guide portion 48, that is, the dropping posture in which the seed ball length is in the vertical direction is taken. From the held sowing tube 58, the seeds are sown at the seeding positions on the six ridges formed in the field.

Further, after the first shutter 42 is opened, the next cam body 46 opens the next shutter 42, and the seed balls of the six compartments 23 corresponding to the shutter 42 fall, and the same as above. Six-row sowing is performed.

When the seed balls contained in the eight compartments 23 provided in the width direction of the tray 20 are completely seeded by the shutters 42 that are sequentially opened as described above, the final opening operation is performed. When the opening operation of the shutter 42 is detected by the opening operation detector 51, the motor 31
Is driven, and a concave portion 34a is provided around the drive pulley 33.
The carrier band 26 operates by an angle corresponding to the interval of, the seed ball tray 20 is vertically fed by one pitch, and subsequently the opening operation of the shutter 42 is sequentially performed.

When all seed balls contained in the seed ball tray 20 are dropped and seeded as described above, the seed ball tray 20 is taken out from the tray holding frame 37. As seeding of the balls progresses, the seed ball tray 20 moves to the lower side of the tilt of the seed ball table 21, so that the upper tray 20 stacked on the seed ball tray 20 has the seed ball tray 20 of the tray support 36. When it crosses the vertical wall 36a, it falls and adjoins the preceding seed ball tray 20 and moves the seed ball base 21 downwardly.

Therefore, when the seeding of all the seed balls of the preceding seed ball tray 20 is completed, the seed ball tray 20 of the succeeding seed ball tray 20 continues.
Seed balls of this are sown.

As described above, the seed balls to be housed in the seed ball tray 20 are sequentially addressed to one ridge from a large number of compartments 23 provided in the width direction of the seed ball tray 20 without laterally moving the seed ball table 21. Since the seed balls are dropped and seeded, and the plurality of compartments 23 whose upper side is open are housed in the respective compartments 23 of the seed ball tray 20, the seed ball accommodation work is performed. It can be done easily and efficiently, and its workability is improved, and the seeding posture can be dropped to the seedling posture when it is stored, so the sowing posture can be easily managed.

Moreover, since the opening operation timing of the shutter 42 is changed according to the falling conditions, it is possible to reduce an error in the seeding pitch, so that seeding can be carried out at a desired seeding pitch, and the opening operation speed can be reduced. The falling timing is less likely to shift due to the size of the seed ball because it is faster, and the falling seed ball is also prevented from being caught by the shutter 42 that closes because the closing operation speed is slowed. Therefore, the seed pitch error can be further reduced.

[0058]

As described above, according to the present invention, the seed ball tray 20 having a large number of compartments 23 for accommodating a large number of seed balls in a partitioned manner is provided.
And a seed ball base 2 on which the seed ball tray 20 is movably mounted
1, a plurality of shutters 42 corresponding to a plurality of compartments 23 partitioned in the width direction of the seed ball tray 20 at the seed ball outlet 21b of the seed ball base 21 and opening and closing the bottoms of these compartments 23. Are arranged side by side in the machine width direction, and at the lower part of the shutter 42, a receiving portion 47 that receives the seed bulbs that drop by the opening operation of these shutters 42, and the seed bulbs received by the receiving portion 47 are placed at the seeding position in the field. A seeding shooter 49 having a seeding guide part 48 for guiding is provided, while a shutter drive mechanism for sequentially opening the shutters 42 at a seeding pitch is provided, and the drive mechanism is provided from the shutters 42 to the receiving part 47. Since the seeding pitch adjusting mechanism that changes the opening operation timing of the shutter 42 according to the falling condition to the By sequentially opening the seed balls 42, the seed balls stored in the large number of compartments 23 provided in the seed ball tray 20 can be dropped one by one, and seeding can be performed without laterally feeding the seed tray 20. Therefore, the structure is simple. In addition, a large number of compartments 23 can be used as the seed ball tray 20.
Therefore, the seed balls can be easily accommodated in the compartment 23, the workability thereof can be improved, and the compartment 23
By storing seed balls in the falling posture, seeding can be done in that posture without changing the posture, so the seeding posture can be managed.

Moreover, the shutter drive mechanism for sequentially opening the shutters 42 at the seeding pitch has the opening operation timing of the shutters 42 according to the falling conditions when the shutters 42 drop to the receiving portion 47 of the shooter 49. Since the seeding pitch adjusting mechanism for changing the seeding pitch is provided, it is possible to prevent an error from occurring in the seeding pitch, that is, the seeding can be performed at a desired seeding pitch.

Further, by providing an opening / closing speed control mechanism that speeds up the opening operation of the shutter 42 and slows down the closing operation, it is possible to reduce the deviation of the falling timing even if the seed ball size is different, and the seeding pitch of the seeding pitch due to this deviation is reduced. The shutter 4 can reduce the error and close the falling seed ball.
It can also be prevented from being sandwiched between the two.

[Brief description of drawings]

FIG. 1 is a side view of a bulb seeder mounted on a rear portion of a tractor.

FIG. 2 is an enlarged plan view of the bulb seeder of FIG.

FIG. 3 is a plan view of only the seed ball tray.

FIG. 4 is a partially enlarged side view showing the relationship between a seed ball tray and a transport belt.

FIG. 5 is a partially enlarged side view showing the relationship between the cam body and the shutter.

FIG. 6 is an enlarged partial plan view of the relationship between the cam body and the shutter and the input side of the shutter drive shaft.

FIG. 7 is a rear view of the seeding shooter with the rear plate removed and viewed from the rear.

FIG. 8 is a time chart diagram illustrating the opening operation timing of a shutter.

FIG. 9 is a front view showing another embodiment of the cam body.

[Explanation of symbols]

 20 seed ball tray 21 seed ball base 21b seed ball outlet 23 compartment 42 shutter 43 grounding rotary wheel 44 flexible shaft 45 shutter drive shaft 46 cam body 47 receiving portion 48 seeding guide portion 49 seeding shooter

Claims (2)

[Claims] 1. A seed ball tray 20 having a plurality of compartments 23 for accommodating a large number of seed balls in a partition shape, and this seed ball tray 20.
And a seed ball base 21 for movably mounting the
One seed bulb outlet 21b corresponds to a plurality of compartments 23 that are divided in the width direction of the seed ball tray 20.
A plurality of shutters 42 for opening and closing the bottom of 3 are arranged side by side in the machine width direction, and at the lower part of the shutter 42, a receiving portion 47 for receiving a seed ball falling by the opening operation of these shutters 42, and the receiving portion 47. A seeding shooter 49 having a seeding guide part 48 for guiding the received seed bulbs to a seeding position in the field is provided, while a shutter drive mechanism for sequentially opening the shutter 42 at a seeding pitch is provided, and the drive mechanism. Is equipped with a seeding pitch adjusting mechanism that changes the opening operation timing of the shutter 42 according to the falling condition from the shutter 42 to the receiving portion 47. 2. The shutter drive mechanism comprises a shutter 42.
2. The bulb seeding machine according to claim 1, further comprising an opening / closing speed control mechanism that speeds up the opening operation and delays the closing operation.