WO2004075625A1

WO2004075625A1 - Seedling-transplanting machine

Info

Publication number: WO2004075625A1
Application number: PCT/JP2004/002093
Authority: WO
Inventors: Isao OTOKURA; Hayato YASUMOTO; Kiyohiro Morikawa
Original assignee: Seirei Industry Co., Ltd.; Yanmar Co., Ltd.
Priority date: 2003-02-27
Filing date: 2004-02-23
Publication date: 2004-09-10
Also published as: KR101092081B1; KR20050096195A

Abstract

A seedling-transplanting machine has a seedling-feeding portion provided at a machine body and a seedling placement platform provided at a side of the seedling-feeding portion. The seedling placement platform is horizontally swingably and vertically movably structured. The seedling-feeding portion and the seedling placement platform that is swung to the seedling-feeding portion side are positioned in a vertical relationship. When the seedling placement platform falls down while it is vertically superposed on the seedling-feeding portion, the seedling placement platform hits the below lying seedling-feeding portion and can damage it. To prevent such damage, limiting means is provided in the seedling-transplanting machine, where the limiting means limits the lowering of the seedling placement platform, swung to a position above the seedling-feeding portion, to a predetermined height.

Description

Specification

Technical field

The present invention relates to a seedling transplanter for transplanting seedlings such as vegetables, and more particularly to a configuration of a seedling table of the seedling transplanter and a shutter device of a seedling supply unit.

Conventionally, there is known a seedling transplanter that throws seedlings into a transplantation opening device (so-called transplanting nail) from a seedling supply section provided at the rear of the machine body, moves the transplantation opening device into the ridge, and transplants the seedlings. It has been done. The seedling transplanter is provided with a seedling supply section at the rear of the machine.

For example, in a seedling transplanting machine disclosed in Japanese Patent Application Laid-Open No. H11-333216, the seedling supply unit includes one seedling mounting table for placing seedlings on the side of the machine body. However, it is configured such that the seedlings on the seedling mounting table are supplied to the seedling supply unit by an operator's hand.

However, in such a configuration, the amount of seedlings that can be placed on the seedling mounting table is limited. For this reason, it was necessary to move the seedling transplanter from the field to the storage location of the seedlings in order to replenish the seedlings during the transplanting operation, which reduced the work efficiency.

To deal with this problem, it is possible to increase the amount of seedlings that can be placed by providing multiple seedling mounting stands and improve the work efficiency. In this case, it is easy for an operator to supply seedlings to the seedling supply section by moving the seedling mounting table during the transplanting operation and changing the position thereof.

However, in such a configuration, when the seedling mounting table is moved, the seedling mounting table may come into contact with other members of the seedling supply unit, which may cause damage. In addition, it is necessary to fix the seedling mounting table during the work, but this fixing and releasing operation is performed while avoiding the contact with other parts of the seedling mounting table, which makes the operation complicated, and Could cause erroneous operation.

Also, a configuration is known in which a shutter opening / closing device is provided in a seedling supply cylinder for supplying seedlings to a transplant opening device in a seedling supply section of a seedling transplanter. For example, utility model application announcement In the seedling transplanter disclosed in JP-A-48-1983 and Utility Model Publication No. 1-1985-1990, the upper part of the transplanter was reached at the seedling supply position. A seedling transfer pot for supplying seedlings from the plant is provided, and the opening at the lower end of the seedling transfer pot is opened. A shirt that can be closed will be provided. Then, a support member for holding the shutter in a closed state is provided, and when the transplantation opener reaches the seedling supply position, the support by the support member is released to open the shirt. .

However, in such a configuration, the control configuration for coordinating the operation of the transplantation hole and the seedling supply unit becomes complicated, and the economic efficiency and operation stability of the seedling transplanter have been reduced. Disclosure of the invention

An object of the present invention is to provide a seedling transplanter for transplanting seedlings such as vegetables, which prevents the seedling supply portion from being damaged and makes the supply of seedlings by the seedling supply portion more stable.

In order to achieve this object, a seedling supply unit disposed on the body of the machine and a seedling table arranged on the side of the seedling supply unit are provided, and the seedling table can be horizontally rotated and vertically moved up and down. The seedling supply unit and the seedling table turned to the seedling supply unit side are arranged vertically. The seedling transplanter, wherein the seedling transplanter is located above the seedling supply unit. A restricting means is provided for restricting the lowering of the seedling table rotated to the position at a predetermined height.

With this configuration, when the seedling mounting table is rotated to a position above the seedling supply unit, the lowering of the seedling mounting table is regulated at a predetermined height by the regulating means. When the seedling table is rotated to a position other than the upper position of the seedling supply section without contact with the seedling supply section below the seedling supply section, the lowering of the seedling table by the restricting means is eliminated. The height position of the seedling mounting table can be adjusted so that the worker can work easily, and the operability is improved.

In addition, if the seedling table rotated to the seedling supply unit side is lowered and is supported at a predetermined height by the regulating means, the seedling table is not accidentally dropped and the seedling below the seedling table is not accidentally dropped. Collision with the supply unit is prevented beforehand, improving operability.

Conventionally, the seedling table rotated to the seedling supply unit side does not fall by any chance. As described above, the position of the support frame that supports the seedling mounting table was fixed by firmly tightening the fixture using a tool such as a spanner. However, as in the present invention, if the seedling table rotated to the seedling supply unit side is supported at a predetermined height by the regulating means, it does not fall any further, and the strength of the fastening by the fixture is reduced. can do. For this reason, the fixing tool can be made to be able to be tightened by hand such as a knob screw, and as a result, a tool such as a wrench is not required for fixing the position of the seedling mounting table, thereby improving operability. .

Also, in the present invention, in a seedling transplanter that transplants seedlings in conjunction with running of the airframe, a transplanter that vertically moves up and down to transplant seedlings, and supplies seedlings to the transplanter. A seedling supply unit, the seedling supply unit configured to rotationally drive a seedling transfer pot connected in an oval shape, and to drop the seedling from an appropriate position on an elliptical movement locus of the seedling transfer pot. A seedling transplanter in which the seedlings are inherited by the transplanter and transplanted to a field, wherein the seedling transport pot is provided with a shirt that can open and close a bottom surface, and the shutter is The forcing means is forcibly biased in the opening direction.

With this configuration, the shutter that opens and closes the bottom surface of the seedling transfer pot can be reliably opened, preventing the seedling from being disturbed at the time of delivery. The timings of the operations match. Therefore, the transplant is more stable. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a side view of the seedling transplanter 1. FIG.

FIG. 2 is a side view of the seedling placing portion 8.

FIG. 3 is also a plan view.

FIG. 4 is also a rear view.

FIG. 5 is a rear view of the seedling mounting portion 8 for explaining the regulation of the lowering of the first seedling mounting table 8 1 L by the stopper 89.

FIG. 6 is a plan sectional view of the same.

FIG. 7 is a rear view of a first seedling mounting table 81 L provided with a stoveba 90 of another configuration. FIG. 8 is a rear view of the first seedling mounting table 81L provided with a stopper 91 of another configuration. FIG. 9 is a side view of the tank stand 95.

FIG. 10 is also a front view.

FIG. 11 is also a plan view.

FIG. 12 is a rear view of the earth covering ring support frame 191.

FIG. 13 is a plan view of the earth covering ring 22.

FIG. 14 is also a side view.

FIG. 15 is a rear view of the ridge sensor rollers 50.

FIG. 16 is a side view showing the overall configuration of the seedling transplanter 101 in the second embodiment.

FIG. 17 is also a plan view.

FIG. 18 is a partial plan view of the seedling supply unit 107.

FIG. 19 is a side view showing the configuration of the seedling carrier 150.

FIG. 20 (a) is a plan view showing the structure of the shutter 144. FIG.

FIG. 20 (b) is a side view of the same.

FIG. 21 is a partial plan view showing the configuration of the guide rail 13.

FIG. 22 is a plan view showing the entire guide section.

FIG. 2.3 is a partial side view showing an operation state of the seedling carrier 150.

FIG. 24 is a partial plan view of the operation unit.

FIG. 25 (a) is a rear view of the main speed changeover portion.

FIG. 25 (b) is a plan view showing the same operation position.

FIG. 26 is a plan view of the rear part of the mission case 104. FIG.

FIG. 27 is a rear view of the transmission section.

FIG. 28 is a partial plan view of the handle portion, the seedling carrier, and the rear portion of the mission. FIG. 29 is also a partial side view.

FIG. 30 is a partial side view of the transmission and hydraulic pressure switching.

FIG. 31 is a side view of the inter-stock transmission unit.

FIG. 32 is a right side view of a mission case 104 showing a configuration of an ink jet 366 according to another embodiment.

FIG. 33 is a mission diagram showing the configuration of the ink jet unit 366 in another embodiment. It is a right view of case 104.

FIG. 34 is a circuit diagram showing a configuration of operating means of the hydraulic cylinder 228.

The present invention will be described in more detail with reference to the accompanying drawings. Hereinafter, a first embodiment of the seedling transplanter according to the present invention will be described.

First, the overall configuration of the seedling transplanter 1 will be described.

As shown in FIG. 1, in the seedling transplanter 1, the seedlings 46 are fed into the transplant opening device 49 from the seedling supply section 7 provided at the rear of the machine, and the transplant opening device 49 is ridged 4 5 An agricultural work machine that moves inside and transplants the seedlings 46.An engine 3 is mounted on an engine frame 24 that constitutes the front part of the chassis, and a transmission case 4 is placed on the front and rear central parts of the chassis. Then, a handle frame 6 serving as a handle member is continuously provided in a horizontal direction from above the rear portion of the chassis to the rear, and a seedling placing portion 8 is supported on a front and rear halfway portion of the handle frame 6, and a seedling supply portion is provided. 7 is arranged, the rear portion of the handle frame 6 is configured as a driving operation unit 9, and various operation levers are disposed.

A front wheel rotation support shaft 10 is horizontally laid horizontally on the left side of a front portion of the chassis, and a front wheel support arm 1 serving as a front wheel support is provided at a left end and a right end of the front wheel rotation support shaft 10, respectively. 1 · The upper end of 1 is attached. The left and right front wheel support arms 1I'll are configured to be rotatable with respect to the chassis, and the front wheels 12 that are driven wheels are rotatably mounted at the lower end of each front wheel support arm 11. .

In addition, rear wheel drive shafts 15 and 15 project from the transmission case 4 to the left and right sides. A rear wheel support pipe 21 is disposed outside each rear wheel drive shaft 15, and an upper end of a chain case 16 serving as a rear wheel support is provided at an outer end of each rear wheel support pipe 21. Is fixed. The left and right chain cases 16 and 16 are configured to be rotatable with respect to the chassis, and a rear wheel 17 as a driving wheel is supported at a lower end of each chain case 16. Above the left rear wheel support pipe 21, a tank base 95 for mounting the water tanks 93, 93 is arranged.

Then, a transplanting section 40 is arranged below the seedling supply section 7, and the transplanting section 40 moves up and down the transplantation opener 49 to receive the seedlings 46 from the seedling supply section 7 at the uppermost position, and the lower end position Move in The seedlings 49 are opened, the seedlings are dropped into the ridges 45, and the soil is brought to the roots of the seedlings 46 by a covering soil ring 22 arranged on the rear side to cover the soil and transplant.

The seedling supply unit 7 is provided with a structure for continuously rotating and driving a seedling transporting body connected in a left-sided oblong shape. The seedling transfer body is composed of a seedling transfer bot 48 and a pot mounting base 41, and the bot mounting base 41 holds and rotates the seedling transfer pot 48 into which the seedlings 46 are inserted. Then, a transfer part is provided at an appropriate position on the movement locus of the elliptical shape of the seedling carrier, the seedling 46 is dropped from the transfer part, and the seedling 46 is placed in the transplant opening device 49 of the transplant part 40. 6 is thrown.

A ridge sensor roller 50/50 for detecting the height of the ridge is provided between the left and right rear wheels 17 'and 17, and the support arm 53 rotates on the engine frame 24 supporting the engine 3. The ridge sensor rollers 50 and 50 are rotatably attached to the lower end of the support arm 53.

Next, the configuration of the seedling mounting section 8 will be described.

As shown in FIGS. 2 and 3, the seedling mounting part 8 is located at the center of the left and right sides of the first seedling mounting base 8 1 L A second seedling mounting table 82 is provided as a spare seedling mounting table, and each is supported on the handle frame 6. The left and right first seedling stands 8 1 L and 8 1 R are horizontally arranged at the same or substantially the same height, and the second seedling stand 8 2 is the first seedling stand 8. 1 L · 81 1 level higher than horizontal and arranged horizontally.

As shown in FIG. 3, the handle frame 6 includes a right frame 6R, a middle frame 6M, and a left frame 6L. Is disposed on the right side of the fuselage, and the left frame 6L and the right frame 6R are integrally formed in a “U” shape with an open front side in plan view. A middle frame 6M is arranged between the front half of the left frame 6L and the front half of the right frame 6R, and the front end of the right frame 6R and the front end of the middle frame 6M are arranged in a mission. It is fixed on both left and right sides of case 4. A support plate 60 R is installed between the front and rear central portions of the right frame 6 R and the rear portion of the middle frame 6 M, and a drive case (not shown) of the seedling supply unit 7 is provided below the support plate 6 OR. It is hanging.

In addition, the left frame 6 L has support play from the center in the front-rear direction to the left (outside). A pair of left and right rear frames 5 and 5 constituting a chassis are fixedly mounted on the lower surface of the support plate 60L and the lower surface of the support plate 6OR, respectively. (See Figure 1). A support frame 69 extending leftward is provided between the middle frame 6M and the left frame 6L. The support frame 69 and the support plate 60R'60L allow seedlings to be formed. Supply 7 is supported. A drive shaft 76 projects upward from a drive case suspended from the support plate 60 R, and a drive sprocket 77 is fixed to the drive shaft 76. A mounting frame 73 is provided between the substantially left and right central portions of the support plate 60 L and the left side of the support frame 69, and a support shaft projecting upward from the mounting frame 73. A support sprocket 79 is fixedly provided with a driven sprocket 79. The driving sprocket 77 and the driven sprocket 79 are disposed substantially between the left and right widths of the machine body, and the pot mounting base 4 connected endlessly to the driving sprocket 77 and the driven sprocket 79. 1 · 4 1 · · 'The ream is wound. Each of the pot mounting bases 41 holds a seedling transport pot 48 into which one seedling is inserted. Power is transmitted to the drive sprocket 77 from the transmission case 4 via a transmission mechanism such as a chain. Thus, the seedling supply unit 7 is configured, and the first seedling mounting tables 8 1 L and 81 R are arranged on both left and right sides of the seedling supply unit 7.

Support portions 69 e and 6 e are formed at the left end (outer end) of the support frame 69 and the front and rear center portions of the right frame 6 R, respectively. From the side view, an “L” -shaped seedling mounting frame 83 L · 83 R extends sideways diagonally forward, and the first seedling mounting frame 83 L (83 R) Seedling stand 81 L (81 R) is installed.

In the first seedling mounting table 81 L (81 R), a rectangular frame 81a long in the front-rear direction and a rectangular frame 81b long in the left-right direction are joined with the center position (center of gravity position) aligned. It is formed in a substantially “C” shape in plan view. On one frame 81a, a mounting plate 81c is provided between the front and rear central portions of a pair of long sides facing each other. Also, the front and rear ends 8 1d and 81 d of the first seedling mounting table 81 L (81 R) and the left and right ends 8 1 e and 81 e are bent upward, respectively. The rectangular seedling mounting tray is placed on the frames 81a and 81b by engaging with the four bent parts, and the seedling mounting tray is The seedlings 46 · 46 · · · are arranged vertically and horizontally.

As shown in FIGS. 2 and 4, the seedling mounting frame 83L (83R) includes a vertical portion 83a, and a horizontal portion 83b extending forward from the upper end of the vertical portion 83a. The lower part of the vertical part 83a is inserted into the mounting hole 69f (6f) of the pipe-shaped support part 69e (6e) of the frame 69 (6R), and can be manually tightened with a knob screw or the like. It is fastened through a fixing device 85.

When this fixing device 85 is loosened by hand, the vertical part 83a of the seedling mounting frame 83L (83R) is aligned with the mounting hole 69f (6f) of the support 69e (6e) of the frame 69 (6R). The vertical position of the seedling mounting frame 83L (83R) can be adjusted so that workers can work easily, and the height and direction of the seedling mounting frame 83L (83R) can be adjusted. When the transplanter 1 is stored in a garage or the like, the first seedling mounting table 81L and 81R are rotated inward in the left and right directions to be placed above the seedling supply section 7, and the seedling supply section 7 and the first seedling loading section. The units 81L and 81R can be wrapped up and down so that the entire aircraft can be compactly assembled. Alternatively, the first seedling mounting table 81L (81R) can be removed together with the seedling mounting frame 83L (83R), and the aircraft can be stored compactly. In addition, the vertical portion 83a of the seedling mounting frame 83L (83R) restricts the lowering of the first seedling mounting table 81L (81R), which has been rotated to a position above the seedling supply section 7, at a predetermined height. When the first seedling mounting table 81L (81R) is rotated to a position other than the position above the seedling supply unit 7 when the first seedling mounting table 81L (81R) is rotated, the lowering control of the first seedling mounting table 81L (81R) is performed. It is configured to disappear.

For example, this regulation means is to move the stopper 89 attached to the seedling mounting frame 83L (83R) supporting the first seedling mounting 81L (81R) and the seedling mounting frame 83L (83R) horizontally. And a frame 69 (6R) on the fuselage body side, which is movable and can be moved up and down.

The stopper 89 includes a projecting portion 89a projecting from the vertical portion 83a of the seedling mounting frame 83L (83R) on the side of the first seedling mounting 81L (81R) side; And a hanging portion 89b extending downward from the tip of 89a. The lower end of the hanging portion 89b abuts on the upper surface of the frame 69 (6R) on the body side of the aircraft, so that the first seedling can be obtained. The platform 81L (81R) is configured so that its lowering is restricted. More specifically, as shown in FIGS. 5 and 6, the support portion 69 e (6 e) that supports the seedling mounting frame 83 L (83 R) so that it can rotate horizontally and move up and down can be used. When the first seedling loading table 81L (81R) is rotated to a position above the seedling supply section 7, the seedling loading table is attached to the frame 69 (6R) on the side of the body of the machine, The vertical part 83a of the frame 83L (83R) has a hanging part 89b of a stopper 89 arranged on the side of the first seedling mounting table 81L (81R) side of the first seedling mounting table 83a. ) Is located above the frame 69 (6R) on the machine body side, which is located on the seedling supply section 7 side with respect to the support section 69e (6e), and the seedling mounting frame 83L (83R) is When it is lowered, the lower end of the hanging portion 89b of the stopper 89 comes into contact with the upper surface of the frame 69 (6R), and the lowering of the first seedling mounting table 81 (81R) is restricted. As the regulatory position, the first seedling platform 8 1 (81R) is configured not to contact the seedling transport pot 48, 48, 48, of the seedling supply unit 7.

On the other hand, when the first seedling mounting table 81L (81R) is rotated to a position other than the position above the seedling supply section 7, the first seedling mounting table 83a of the vertical section 83a of the seedling mounting frame 83L (83R) is rotated. 81 L

The seedlings are supplied to the support part 69e (6e) of the seedling mounting frame 83L (83R) below the hanging part 89b of the stopper 89 arranged on the (81R) side. As a result, the frame 69 (6 R) arranged on the part 7 side is eliminated, and the contact surface of the hanging part 89 b of the stopper 89 is eliminated. As a result, the lowering regulation of the first seedling mounting table 81 L (81 R) is eliminated, The height position of the first seedling mounting table 81L (81R) can be lowered so that the worker can work easily.

However, the range in which the first seedling mounting table 81 L (81 R) that has been rotated to a position other than the position above the seedling supply unit 7 can descend is determined, and the horizontal portion 89 a of the stopper 89 is attached to the frame 69 (6R). When it is hooked on the edge of the mounting hole 69 f (6 f), it will be at the lowest position. Between the lowermost position and the regulation position, the lower end position of the horizontal portion 83b of the seedling mounting frame 83L (83R) is transferred to the seedling transporter held by the pot mounting base 41 of the seedling supplier 7. Pots 48, 48, * may be located below the upper end position.However, if the first seedling mounting table 81R on the right side of the machine is horizontally rotated between the lowermost position and the regulation position, The side of the vertical portion 89b of the stopper 89 contacts the outer surface of the frame 6R, and the first seedling mounting table 81R is regulated so as not to rotate above the seedling supply unit 7, The first seedling mounting table 81R does not contact the seedling transfer pots 48, 48, on the seedling supply unit 7, and the first seedling mounting table 81R supports the second seedling mounting table 82 in the center of the machine. It is configured so that it does not come into contact with the seedling mounting frame 84R.

In addition, a regulating member is provided to extend forward and backward from the front end of the frame 69. The first seedling mounting table 81L on the left side of the body is horizontally rotated between the lowermost position and the regulating position. When moved, the side of the vertical portion 89 b of the stopper 89 comes into contact with the outer surface of the regulating member in front and behind the front end of the frame 69, and the first seedling mounting table 81 L rotates upward of the seedling supply section 7. The first seedling mounting table 81L is configured so that the first seedling mounting table 81L does not contact the seedling transport pot 4 8'48 on the seedling supply section 7. It may be configured so that it does not come into contact with the seedling mounting frame 84 L that supports the two seedling mounting tables 82.

Alternatively, when the first seedling mounting table 81L (81R) is rotated left and right between the lowermost position and the regulation position, the first seedling mounting table 81L (81R) is moved to the second position. The seedling mounting frame 83L (83R) supporting the first seedling mounting 81L (81R) so as not to hit the seedling mounting frame 84L (84R) supporting the seedling mounting 82; A rotation restricting member is provided between the mounting frame 69L (83R) and the mounting hole 69f (6f) of the frame 69 (6R) into which the mounting frame 83L (83R) is inserted. It may be configured to regulate the rotation range of.

In this regulation structure, the horizontal portion 89a is composed of a pin or the like, the support portion 69e (6e) is composed of a pipe, a notch is provided at the top of the pipe, and a high portion where a portion other than the notch is located is provided. Can be set at a position where it does not come into contact with the seedling transfer pots 48, 48,.

As described above, in the present embodiment, the lowering of the first seedling mounting table 81L (81R) is controlled by utilizing the existing frame 69 (6R) on the fuselage body as a part of the control means. The number of parts is reduced.

The configuration of the stopper 89 includes a projecting portion 89a protruding from the side of the vertical portion 83a of the seedling mounting frame 83L (83R) on the side of the first seedling mounting 81L (81R) side. And a drooping portion 89b extending downward from the tip of the protruding portion 89a, as well as an L-shaped configuration, as shown in FIG. 7, and a seedling mounting frame 83L (83R) as shown in FIG. one A stopper 90 that extends obliquely downward from the side of the seedling mounting table 81L (81R) side, and a vertical part 83a of the seedling mounting frame 83L (83R) as shown in Fig. 8 A projecting portion 91a protruding from the side of the first seedling mounting table 81L (81R) side of the plant, and a drooping portion 91b extending downward from a halfway in the longitudinal direction of the projecting portion 91a. A “T” -shaped stopper 91 or the like provided with, may be applied, and the configuration of the stopper is not particularly limited. The stoppers 90 and 91 have the same effect as the stopper 89 described above. In the "Τ" -shaped stopper 91, the tip of the projecting portion 91a is used as a handle, and the projecting portion 91a is formed by hand. The first seedling mounting table 81L (81R) can be moved up and down and horizontally rotated by gripping 91a to improve operability.

The position of the stoppers 89-90-91 is also located on the side of the vertical section 83 a of the seedling mounting frame 83 L (83R) on the side of the first seedling mounting 81 L (81 R) side. There is no limitation. For example, a seedling stand frame corresponding to the supporting member is provided by extending the supporting member from the supporting portion 69 e (6 e) of the frame 69 (6R) in a direction that does not interfere with other members, such as the front or the rear. A stopper is placed on the side of the vertical section 83a of 83L (83R). That is, when the first seedling mounting table 81L (81R) is rotated to a position above the seedling supply unit 7, the stopper is arranged so that the support member is located below the stopper. The stop of the first seedling mounting table 81L (81R), which has been rotated to a position above the seedling supply unit 7, is restricted by the stopper and the support member, and the first seedling mounting table 81L (81R) is supplied with seedlings. When it is rotated to a position other than the position above the portion 7, the lowering by the stopper and the support member is not regulated.

With the above configuration, when the first seedling mounting table 81L (81R) is rotated to a position above the seedling supply unit 7, the lowering of the first seedling mounting table 81L (81R) causes the stopper 89, The first seedling mounting table 81 L (81R) is connected to the seedling supply section 7 below it, because it is regulated at a predetermined height by regulating means such as 90 or 91 and the upper surface of the frame 69 (6R). When the first seedling mounting table 81 1 L (81 R) is turned to a position other than the upper position of the seedling supply unit 7 without contact, the first seedling mounting table 81 L ( As the lowering regulation of the first seedling mounting table 81L (81R) is removed, the height position of the first seedling mounting table 81L (81R) can be adjusted so that the worker can work easily, and the operability is improved.

Also, lower the first seedling mounting table 81L (81R), which has been rotated to the If the first seedling mounting table 81L (81R) is erroneously dropped by supporting it at a predetermined height by control means, collision with the seedling supply section 7 therebelow is prevented. The operability is improved.

Conventionally, a fixture such as a wrench is used so that the first seedling mounting table 81L (81R) rotated to the seedling supply unit 7 side does not fall by any chance. The seedling mounting frame 83L (83R) supporting the first seedling mounting 81L (81R) was firmly tightened and fixed, but as in this embodiment, it turned to the seedling supply unit 7 side. If the first seedling mounting table 81L (81R) is supported at a predetermined height by means of regulating means such as stoppers 89, 90 or 91 and the upper surface of the frame 69 (6R), any further There is no drop, and the fastening strength of the fixture can be reduced. For this reason, the fixing device 85 can be tightened by hand such as a knob screw, and as a result, a special tool such as a spanner is not required to fix the position of the first seedling mounting table 81L (81R). The operability is improved.

Then, as shown in Fig. 2, the tip (front end) of the horizontal portion 83b of the seedling mounting frame 83L (83R) has a mounting portion 83c for the first seedling mounting 81L (81R). Is formed. The mounting portion 83c includes a cylindrical body 83d arranged vertically in the axial direction, a shaft body 83e inserted into the cylindrical body 83d, and a disk attached to an upper end of the shaft body 83e. Body 83f, the outer diameter of the disk body 83f is formed larger than the inner diameter of the cylindrical body 83d, and the shaft body 83e and the disk body 83f are rotatably supported by the upper end surface of the cylindrical body 83d. The mounting plate 81c of the first seedling mounting table 81L (81R) is fixed on the disk 83f. A fixing member 86 made of port and nut is screwed into the cylindrical body 83d in the axial direction of the horizontal portion 83b of the seedling mounting frame 83L (83R), and an inner end of the fixing member 86 is screwed. By pressing the outer peripheral surface of the shaft body 83e, the rotation of the shaft body 83e is regulated. When this fixing device 86 is loosened, the shaft 83e can rotate freely to the left and right with respect to the cylinder 83d, so that the orientation of the seedling mounting table 81L (81R) can be adjusted so that the worker can work easily. I'm familiar.

As shown in FIGS. 1 and 3, supporting portions 6 g and 6 h are formed at the front and rear central portions of the left frame 6 L and the front portion of the right frame 6 R, respectively. Seen from the side, the “L” -shaped seedling mounting frames 84L and 84R face forward, respectively. The second seedling mount 82 is erected on the seedling mount frames 84L and 84R. In the left and right seedling mounting frames 84L and 84R, the left seedling mounting frame 84 is located slightly forward of the right seedling mounting frame 84, and both seedling mounting frames 84L and 84R The second seedling mounting 82 is slidably mounted on the seedling mounting frames 84L and 84R so as to be slidable back and forth.

As shown in FIG. 3, the second seedling mounting table 82 has a plurality of bar-shaped vertical frames 82 b, 82 b, and horizontal frames 82 c, 82 c in a rectangular outer frame 82 a. It is bridged and formed in a planer shape, roughly a “field” shape. Each of these frames 82b, 82b, 82c and 82c has both ends in the longitudinal direction bent upward, and the upper end of the bent portion is fixed to the lower surface of the outer frame 82a. Have been. Then, a rectangular seedling mounting tray is fitted into the outer frame 82a, and the seedling mounting tray is supported by a plurality of frames 82b '82b' · ', 82c · 82c. The above seedlings 46-46 · · · · are arranged vertically and horizontally.

As shown in FIGS. 2 and 4, the seedling mounting frame 84L (84R) includes a vertical portion 84a, and a horizontal portion 84b extending forward from the upper end of the vertical portion 84a. The lower part of the vertical portion 84a is inserted into the mounting hole 6j (6k) of the support portion 6g (6h) of the frame 6L (6R), and is fastened via a fixture 87 composed of a port and a nut. ing. When the fixing parts 87 and 87 of the supporting parts 6 g and 6 h of the left and right frames 6 L '6 R are loosened, the vertical part 84 a of the seedling mounting frame 84 L (84 R) is attached to the frame 6 L (6 R). The second seedling mounting table 82 can be moved vertically up and down while maintaining a horizontal posture by being slidable up and down with respect to the hole 6 j (6 k). The height position of the 84 L and 84 R can be adjusted, and when the seedling transplanter 1 is stored in a garage or the like, remove the second seedling mounting table 82 together with the seedling mounting frame 84L'84R. The aircraft can also be stored in a compact.

In addition, stoppers are formed at the vertical portions 84a and 84a of the seedling mounting frames 84L and 84R so that the seedling mounting frames 84L and 84R do not fall below a predetermined height. It may be. Specifically, the left and right seedling stand frames 84L and 84R Of these, at least one of the vertical portions 84a has a convex portion formed in the middle of the upper and lower portions, and when the convex portion is caught on the edge of the mounting hole 6g (6h) of the frame 6L (6R). Then, the seedling mounting frame 84D84R is at the lowest position, and at the lowest position, the lower end position of the horizontal portion 84b of the seedling mounting frame 84L84R is the seedling. The bot mounting base 41 of the supply unit 7 is configured to be higher than the upper end position of the seedling transfer pot 48, 488, * held by the base.

As described above, the seedling mounting frame 8 1 L · 8 1 R for seedling mounting 8 3 L · 8 3 R and the seedling mounting frame for the second seedling mounting 8 2 8 8 L '8 4 R It can slide up and down freely and can be adjusted in height.Normally, the first seedling platform 81L and 81R are placed at the same height or at almost the same height Then, the second seedling mounting table 82 is slightly higher than the first seedling mounting table 81L-81R, and is placed upside down.

Further, as shown in FIG. 2, a support pipe 84c is fitted to the front of the horizontal portion 84b of the seedling mounting frame 84L (84R) so as to be slidable back and forth. Then, as shown in FIG. 3, the support pipe 84 c of the left seedling mounting frame 84 L is attached to the left and right central vertical frame 82 b of the second seedling mounting table 82, and the right seedling mounting The support pipe 84c of the base frame 84L is attached to the rightmost vertical frame 82b. As described above, the second seedling mounting table 82 is supported by the seedling mounting frames 84 L and 84 R at the left and right central portions and the right end, and is configured to be slidable back and forth. The left half of the second seedling mounting table 82 protrudes leftward from the support pipe 84c of the left seedling mounting frame 84L, and the second seedling mounting table 82 Over the drive sprocket 7 7 and the driven sprocket 7 9, are arranged in the left and right width of the seedling supply unit 7, and the area of the seedling loading tray placed on the second seedling loading table 8 2 is secured widely. A large number of seedlings 4 6 · 4 6 · · · can be placed.

At the front end and the rear end of the support pipe 84c, fixing members 88, 88 each made of a port and a nut are screwed from below, and at least one of the fixing members 88, 88 The inner end of the fixture 88 presses the outer peripheral surface of the horizontal portion 84b of the seedling mounting frame 84L, whereby the sliding of the support pipe 84c is regulated. When this fixing device 8 8 · 8 8 is loosened, the support pipe 8 4 c supporting the second seedling mounting table 8 2 can slide back and forth with respect to the horizontal portion 8 4 b, making it easier for workers to work. Seedling stand 8 2 It can be shifted back and forth.

As described above, the seedling mounting section 8 is equipped with the first seedling mounting table 8 1 L and 8 1 R and the second seedling mounting table 8 2, and is mounted on the seedling mounting table 8 1 L and 8 1 L and 8 2 The total area of the seedling loading tray to be placed is wide enough, so that a sufficient amount of seedlings 4 6-4 6 can be placed, and the seedlings 4 6 '4 6 There is almost no need, and workability is improved.

In addition, the fixing device 86-87-888 is not limited to a fixing device using a port and a nut, and a fixing device that can be manually tightened such as a knob screw may be applied, and the configuration is not particularly limited. . When a fixing tool such as a knob screw is applied, the fixing tool can be tightened by hand, and a special tool such as a wrench is not required, thereby improving operability. Next, the configuration of the tank table 95 will be described.

Conventionally, a seedling transplanter has a water tank in which a water tank is mounted, and water in the water tank is supplied to a body of the body through an irrigation hose to an irrigation pipe inserted into the transplantation hole. A watering mechanism for watering was provided, and one water tank was mounted on the tank base.

However, if the field is large, the water in the water tank may run out in the middle of the field during the seedling transplanting operation.In this case, the seedling transplanter is moved to the water supply area and the water tank is Needs to be replenished, and the work efficiency is not very good. Therefore, in view of this point, the tank base 95 is constructed as follows with the task of securing a large total area of the tank base of the seedling transplanter and improving the workability.

As shown in FIG. 1 and FIG. 3, the tank stand 95 is disposed above the rear wheel support pipe 21 that supports the left rear wheel 17 and in front of the seedling supply unit 7. The first mounting table 95a of 95 is attached to the fuselage frame via the bracket 110/1111.

The bracket 110 is erected from the body frame above the rear wheel support pipe 21, and the bracket 111 is suspended from the frame supporting the seedling supply unit 7, and the bracket 111. The tank base 95 is attached and fixed.

As shown in FIG. 9, FIG. 10 and FIG. 11, the tank table 95 is a horizontal first mounting table 95a fixed horizontally to the body frame, and the first mounting table 95a. And a second mounting table 95b which is attached to the 95a so as to be vertically rotatable. By rotating the tank base 95 in such a state, the mounting area of the tank table 95 is enlarged.

The second mounting table 95b is configured to rotate left and right outward with respect to the first mounting table 95a.

The first mounting table 95a includes a mounting portion 95c, and guide portions 95d'95d erected on both sides in the width direction of the mounting portion 95c. The second mounting table 9 5b is

5 f and guide portions 95 g '95 g erected on both sides of the mounting portion 95 f in the width direction, and the guide portions 95 d of the first mounting table 95 a are provided. The left and right inner ends of the guide portions 95 g and 95 g of the second mounting table 95 b are rotatably attached to the left and right outer ends of 95 d. With such a configuration, the second mounting table 95b is attached to the first mounting table 95a so as to be rotatable around a pivot shaft 95k.

A guide portion 95e is provided at an end of the first mounting table 95a on the side of the counter-rotating fulcrum shaft 95k, and a guide portion 95e of the second mounting table 95b on the side of the counter-rotating fulcrum shaft 95k. A guide section 95 h is provided upright at the end of the section.

Further, a drop-preventing member 96 is provided on the side of the second mounting table 95 b on the anti-rotation fulcrum shaft 95 k side, and the drop-preventing member 96 is attached to the second mounting table 95. The “fall prevention position”, which is fixed above the side of the anti-rotation fulcrum shaft 95 k of b, and the upper side of the anti-rotation fulcrum shaft 95 k side of the second mounting table 95 b It is configured to be rotatable between the “evacuated position” that opens.

The fall prevention member 96 includes a pair of standing portions 96 a and 96 b, and the pair of standing portions 9.

A connecting part 96c connecting the upper ends of 6a and 96b forms a "gate" shape, and the lower end of one standing part 96a is connected to the second mounting table 95b by the anti-rotation fulcrum. The second mounting table 95b is mounted at the one end in the width direction on the side of the 95k side so as to be horizontally rotatable. The portion is provided with a locking means so that the other standing portion 96b is detachably locked.

More specifically, the upright portions 96a and 96b are formed in a vertical shape and an inclined portion in an "H" shape, and the tip of the inclined portion of the upright portion 96a and the upright portion 9a are formed. The tip of the inclined portion of 6b is connected to a connecting portion 96c. The image of the inclined portion of the one standing portion 96a is configured to be rotatable around the axis, and the connecting portion 96c of the fall prevention member 96 is connected to the one standing portion. It is configured to rotate up and down with respect to the 96a inclined portion.

Further, the locking means is constituted by a cylindrical body 97, and a locking hole is formed in the cylindrical body 97 so that the axial center is directed upward and downward. By pivoting up and down with respect to the inclined portion of the standing portion 96a, the lower end of the other standing portion 96b is attached to and detached from the locking hole of the cylindrical body 97. .

With such a configuration, the fall prevention member 96 is provided on the anti-rotation fulcrum shaft 9 of the second mounting table 95 b.

Between the “fall prevention position”, which is fixed above the 5 k side, and the “retreat position,” where the upper part of the side of the second mounting table 95 b opposite to the fulcrum shaft 95 k is opened. It is configured to be rotatable.

The fall prevention member 96 is not limited to the above configuration. For example, the fall prevention member 96 may be configured to rotate the fall prevention member up and down so that the second mounting table 95 b is mounted on the anti-rotation fulcrum shaft 95 k side. Rotate between the "fall prevention position", which is fixed above the side, and the "retreat position", which retreats below the side on the shaft 95k side, which is the anti-rotation fulcrum of the second mounting table 95b. The configuration may be as follows, and the configuration is not particularly limited.

The tank base 95 is configured as described above, and the water tanks 93 and 93 contain water and are quite heavy.When the water tank 93 is mounted on the first mounting base 95 a, 2 By rotating the mounting table 95b in a horizontal state, the water tank 93 can be easily mounted on the first mounting table 95a. When the water tank 93 is also placed on the second mounting table 95b, the second mounting table 95b is kept horizontal and the second tank 95b is placed on the second mounting table 95b. Put the water tank 93 on the water. With such a simple configuration, the mounting area of the tank table 95 can be increased, and workability is improved. In this way, the fall prevention member 96 guides the water tank 93 mounted on the second mounting table 95b to prevent the water tank 93 from falling, thereby ensuring stability. The fall prevention member 96 is configured such that the connecting portion 96 c can be vertically rotated with respect to the one standing portion 96 a, and the locking means for locking the other standing portion 96 b is The connecting portion 96c is pivoted up and down with respect to the one standing portion 96a, so that the lower end of the other standing portion 96b is formed. It is configured to be attached to and detached from the locking hole, so that the fall prevention member 96 can be easily opened and closed with one hand.

With the above configuration, the tank base 95 and the fall prevention member 96 can be Even when holding 93, it can be easily rotated with the other hand, rotate the second mounting table 95b in a horizontal state, and turn the fall prevention member 96 to the `` retreat position ''. This makes it easier to place the water tank 92 on the first mounting table 95a or the second mounting table 95b. After the water tank 93 is also placed on the second mounting table, the fall prevention member 96 is rotated and fixed to the original position of the “fall prevention position”, and the fall prevention member 96 is used for the fall prevention member 96. Guide the water tank 93 on the second mounting table 95b to prevent it from falling.

Next, the configuration of the earth covering ring 22 will be described.

As shown in FIG. 1, a stay 17 2 ′ 17 2 projects downward from the lower surface in the front-rear direction of the left and right rear frames 5, 5. The front end of earth covering frame 1 7 3 is pivotally supported. The cover ring frame 1Ί3 is formed in a U-shape in plan view, with the handle 17 4 protruding rearward from its rear end, and a support stay 17 5 protruding upward from the left and right center parts. The mounting frame 1 7 6 is vertically installed. As shown in FIG. 1 and FIG. 12, a pivot shaft 190 projects from the lower end of the mounting frame 17 6 in the front-rear direction, and the earth covering ring support frame 1 is mounted on the pivot shaft 190. 9 The lower part of 1 is pivoted. This earth covering wheel support frame 191, when viewed from the rear, is formed in an inverted "E" shape, and pivotally supports the pivot shaft 190 at the lower part of the center frame. Earth covering rings 2 2, 2 2, 2 2, 2 2 are arranged between the lower part so as to be rotatable one by one on the left and right. The pair of earth covering rings 22-22 are configured to straddle a line in the traveling direction of the transplantation and opening device 49. In this way, the pivot shaft 190 is arranged at the lower center of the left and right, and the left and right earth covering wheels 22-22 are supported so that they can be tilted to the left and right, and the earth covering the ridge 45 follows the inclination of the upper surface. It is designed to increase the accuracy and to hold both sides of the root of the seedling 46 after transplantation.

As shown in FIGS. 12, 13 and 14, support brackets 208 and 208 are fixed to the left and right lower end portions of the earth covering wheel support frame 191, respectively. A support bracket 209 is fixedly provided at the lower end of the center of the cover ring support frame 19 1. The support bracket 209 is approximately twice as long as the support bracket 208, and is mounted so as to protrude left and right from the central lower end of the covering wheel support frame 191. Scrappers 2 13 are fixedly mounted on the support brackets 208 ′ 209, respectively, in correspondence with the earth covering rings 22. The support bracket 208 has a scraper on the front 2 13 is attached, and a scraper 2 13-2 13 is attached to the left and right sides of the front surface of the support bracket 209. The lower portion of the scraper 213 is bent forward and abuts against the rear end of the outer periphery of the earth covering ring 22 so as to remove deposits such as mud adhering to the outer periphery of the earth covering ring 22. ing.

The support brackets 208 and 209 are respectively provided with support arms 211 supporting the earth covering ring 22. The support bracket 208 has a support arm 211 mounted on the front, and the support bracket 209 has a support arm 211-11-2 mounted on the left and right sides of the front. .

The support arm 2 1 1 is formed in a “U” shape in a plan view, and a covering soil ring 2 2 is rotatably supported at a front end thereof, and a rear end surface of the support arm 2 1 1 is formed by a port and a nut. And is fastened and fixed to the front surface of the support bracket 208 (209) via a pair of fixing tools 214-215.

The mounting holes for the pair of fixing members 2 14-2 15 are formed in the support bracket 208 (one side of the left and right sides of the support bracket 209) and the rear end of the support arm 211. The mounting hole of one of the fixtures 2 15 formed on the support bracket 208 (one side of the left and right sides of the support bracket 209) is composed of an elongated hole 208b (209b). The mounting hole of the one fixing member 2 15 is formed in an arc shape centering on the mounting hole of the other fixing member 214 of the support bracket 208 (one side of the left and right of the support bracket 209). It has been.

By moving one of the fixing members 2 15 along the elongated hole 208 b (209 b), the support arm 211 supporting the earth covering ring 22 is supported by the support bracket 208 (support bracket). (The left and right sides of the bracket 209). In such a configuration, the support arm 211 is rotatably attached to the support bracket 208 (one of the left and right sides of the support bracket 209), and the covering ring 22 is rotated at a desired angle in the left-right direction. You can lean on it.

Next, the configuration of the ridge sensor rollers 500 will be described.

As shown in FIG. 15, a rotation support shaft 51 is suspended between lower end portions of the left and right side frames of the engine frame 24, and the rotation support shaft 51 has a left end portion and a right end portion. The upper ends of the brackets 52 and 52 are rotatably mounted. This pair of bras A horizontal portion 53 a of a support arm 53 serving as a support for the ridge sensor roller 50 is pivotally supported at the lower end of the bracket 52.

The support arm 53 is an "L" shaped member in plan view, and includes a horizontal portion 53a and an oblique portion 53b orthogonal to the horizontal portion 53a, and the horizontal portion 53a is an axis. Are arranged in the left and right horizontal directions, and the slanted portion 53 b extends rearward and obliquely from the left and right outer ends of the horizontal portion 53 a. The left and right ends of the horizontal portion 53a of the support arm 53 are rotatably attached to the lower ends of the brackets 52, 52, respectively. The horizontal portion 53 a and the rotation shaft 55 of the ridge sensor roller 50 50 are arranged in front and rear parallel to each other, and the left and right outer ends of the rotation shaft 55 are inclined portions of the support arm 53. It is fixed at the tip of 53 b. That is, the support arm 53 and the rotating shaft 55 are formed in a “C” shape in plan view, and two ridge sensor rollers 50 and 50 are attached to the left and right inner portions of the rotating shaft 55. ing.

The number of the ridge sensor rollers 50 and 50 is not limited to two, but may be more. The plurality of ridge sensor rollers is provided on the rotating shaft 55 supported by the support arm 53 in this manner. By attaching 50 · 50, the unevenness of the ridge 45 can be detected in a wide direction in the left-right direction.

The ridge sensor rollers 50 and 50 are rotatably arranged at a predetermined height, and detect the top of the ridge 45 so that the distance between the ridge 45 and the lower surface of the machine does not become less than a certain distance. I'm trying. The seedling transplanter 1 is configured such that the body of the seedling transplanter 1 can be moved up and down by tilting the support portions of the front wheels 12 and 12 and the rear wheels 17 and 17 with respect to the body of the machine. The front and rear wheel elevating link mechanism rotates the front and rear wheels 1 and 2 and the rear wheels 17 and 17 in rotation in conjunction with each other, and the rear wheels 17 and 18 are driven by hydraulic cylinders. A reciprocating crank mechanism for rotating the 17 rotation support shaft is provided.When the ridge sensor opening 50 and 50 hits the ridge 45, the hydraulic cylinder is activated and the body of the machine is automatically turned on. It is configured to ascend and to maintain the distance between the ridge 45 and the underside of the fuselage at a certain distance or more.

Next, a second embodiment of the seedling transplanter according to the present invention will be described.

First, the entire configuration of the seedling transplanter 101 will be described.

In FIGS. 16 and 17, the seedling transplanter 101 is mounted on the chassis frame 102. The engine 103 and the transmission case 104 are arranged before and after the transmission case, and the U-shaped handle frame 106 serving as an operation handle is mounted on the chassis frame 1 It extends horizontally from 02. Further, an inner side of the handle frame 106 is provided with an upper support frame 3 23 extending rearward from the upper left of the mission case 104. In addition, rear frames 105-105 extend leftward and rightward from the chassis frame 102.

The body frame of the seedling transplanter 101 is composed of a chassis frame 102, a handle frame 106, an upper support frame 32, a rear frame 105 '105, and a mission case 104. It consists of.

A seedling supply unit 1◦7 is arranged on the middle of the candle frame 106, a transplanting unit 120 is arranged below the seedling supply unit 107, and a seedling supply unit 107 The transplanting unit 120 constitutes a transplant working device 15 OA related to seedling transplantation. The rear part of the handle frame 106 is a driving operation part 109.

At the front of the chassis frame 102, front wheel support arms 1 1 3 · 1 1 3 force S are provided rotatably on the left and right, and front wheels 1 1 2 * 1 1 2 are pivotally mounted on each front wheel support arm 1 1 3. Supported. At the rear of the chassis frame 102, chain cases 1 16 1 16 are provided rotatably on the left and right, and the rear wheels 1 1 7 1 1 7 are pivotally mounted on each chain case 1 16. Supported.

A driving drive shaft 115 L · 115 R extending left and right is provided at the lower part of the mission case 104. The driving drive shaft 115 L · 115 feet The rear wheels 1117 · 117 are rotationally driven via the drive transmission from In addition, in the mission case 104 in which the transmission is stored, a traveling shift is performed (details will be described later). The front and rear front wheel support arms 1 1 3 and the chain case 1 1 6 are connected via a lifting link mechanism to the hydraulic cylinder 2 2 8 provided on the chassis frame 102, and the front wheel support arm 1 1 3 and the chain case 1 1 and 6 are linked. Then, an elevating mechanism of the chassis frame 102 is configured.

As shown in FIGS. 17 and 18, the seedling supply section 107 is provided with a structure for continuously rotating and driving a seedling transport pot 148 connected in an oval shape. Seedlings are inserted and held in the seedling transport pots 14 8 by workers. And the seedling transport pot 1 4 8 Seedlings are dropped from the appropriate position of the elliptical movement trajectory (the part that overlaps the transplantation opener 151 in plan view), and the seedlings are put into the transplantation opener 151 of the transplant section 120. Is done. Here, the seedling transport pot 148 is provided with a shirt 145 that allows the bottom surface to be opened and closed, and the seedlings are held when the shutter 145 is closed, and when the shutter 145 is opened. Seedlings fall.

Also, as shown in FIG. 17, seedling stands 13 1 * 13 1 are arranged on the left and right sides of the fuselage, respectively, and a seedling stand 13 2 is also arranged at the center. Seedlings are placed on these seedling platforms 1 3 1-1 3 2, and one or two workers manually transfer the seedlings to the seedling transport pot 1 4 8 on the seedling supply unit 107. Supply.

The seedling holding mechanism in the seedling carrier 150 will be described with reference to FIG. FIG. 19 is a side view showing the structure of the seedling carrier 150, in which the transport direction is indicated by an arrow, and a view from another direction is also displayed beside the arrow. Things. The fitting ring 1558, which is the main body of the pot mounting base 140, is a cylindrical body, and the seedling transport pot 148 is also formed of a cylindrical body. It is.

The seedling carrier 150 is provided with a shutter 144 capable of closing the bottom of the cylindrical seedling carrier 150, and the seedling 1 inserted into the seedling carrier 150 is provided. In addition to preventing the falling off of the seedlings 26, the seedlings 126 can be dropped at the seedling falling position. As shown in FIG. 19, the lower surface of the seedling carrier 150 is the lower surface of the pot mounting base 140, and the shirt 145 closing the lower surface is attached to the pot mounting base 140. It is provided swingably. The supporting portion that supports the shutter 145 so that it can swing freely is a connecting point between the pot mounting bases 140 and 140 (the first connecting portion 144 a and the second connecting portion 144 b 1 4 3) is provided below. In this drawing, a steel wire or a spring plate as a spring body that is forcibly biased to the release side is not shown in order to clarify the relationship between the fitting ring 1558 and the shutter 1445. Things.

The pot mounting base 140 will be described with reference to FIG.

The pot mounting base part 140 includes a fitting ring 1558 for detachably mounting the seedling transfer pot 148, and first connecting parts 1443a formed on both sides of the fitting ring 158. And two connecting portions 1 4 3b-1 4 3b. The fitting ring 158 is a tubular body that is open at the top and bottom. Also, The pot mounting base 140, which is a connecting body, is connected endlessly as follows. The first connecting portion 144a and the second connecting portion 144b * 144b extending in the horizontal plane are provided on the outer peripheral surface of the fitting ring 158. Further, the second connecting portions 144b and 144b have a positional relationship above and below the first connecting portion 144a, respectively. Between the adjacent pot mounting bases 140, 140, the first connecting portion 144a of one pot mounting base 140, and the second connecting portion 144 of the other pot mounting base 144, b * 1 4 3b overlaps in plan view. Then, the first connecting portion 144a and the second connecting portion 144b'1143b are pivotally connected to each other so as to be rotatable left and right by inserting the pivot pin 144 from above. The pot mounting bases 140 and 140 are connected.

The pot mounting base 140 is constructed as described above, and the pot mounting bases 140-140 are connected endlessly so as to freely swing left and right to form an endless body, and a chain or the like is unnecessary. It has a simple configuration.

The configuration of the seedling transport pot 148 will be described.

As shown in Fig. 18 and Fig. 19, the seedling transfer pot 148 is formed in a shape with the upper side expanded to facilitate the insertion of the seedlings 126 into the seedling transfer pot 148. I have. The inner surface of the seedling transfer pot 148 is formed in an uneven shape to limit the contact area between the inserted seedling 126 and the inner surface of the seedling transfer pot 148. Even when moisture is attached, the problem that the seedlings 126 adhere to the seedling transport pots 148 is prevented. The attachment / detachment configuration of the pot mounting base 140 and the seedling transfer pot 148 will be described. The pot mounting base 140 is provided with a structure for preventing the seedling transfer pot 1 48 from coming off, and they can be fitted to each other.

As shown in Fig. 19, a protrusion 144a is provided on the outer peripheral surface of the seedling transfer port 148, and a protrusion 148a is formed on the inner peripheral surface of the fitting ring 158. Fitting holes 158a are formed at corresponding positions.

Then, the projections 148a are fitted into the fitting holes 158a, and the pot mounting base 140 and the seedling transport pot 148 are engaged with each other to be in a “wearing” state. In addition, the fitting of the two members prevents the seedling transfer pot 148 from coming off from the pot mounting base 140. In particular, since the seedling transfer pot 148 is made of a synthetic resin as described above, the seedling transfer pot 148 is bent so as to engage and disengage the fitting hole 158a with the projection 148a. It is possible You. When the protrusion 144a is disengaged from the fitting hole 158a, the pot mounting base 140 and the seedling transfer pot 148 are in a "de-mounted" state.

As shown in FIG. 20, the shutter 1 45 is a member formed by bending a plate-like member. When the flat portion 1 45 a (the soil is gradually deposited on this portion), A rotation support portion 144b formed on one side of the flat portion 144a and a mouthpiece mounting portion 144c formed on the other side are provided.

A steel wire B (an urging member for urging a shutter (not shown) to discharge the seedlings to the hole puncher) is provided above the roller mounting portion 144c formed on the other side. A piano wire) or a leaf spring BT (a shape slightly narrower than the roller mounting part 1450c) is provided to press down from above.

The rotation support portion 144b is a portion formed by bending the plate-like member into a U-shape in cross section on the front side in the transport direction of the shirt 1145. The fulcrum pin 144 inserted into the rotation support portion 144b is fixed horizontally to a shutter support portion 144c protruding below the outer peripheral surface of the pot mounting base portion 140. The shutter 145 is locked in a vertically rotatable manner with respect to the pot mounting base 140. In addition, the U-shape makes it easy to assemble the rotation support portion 144b so that it can be easily attached and detached. In order to prevent disengagement, a plate T is provided for holding the U-shaped part after assembling, and the assembling is illustrated by (T). The shutters 144 are formed symmetrically. Similarly, the mounting positions of the roller mounting portions 1450c and the rollers 1407 are symmetrical, and are provided by the number of the pot mounting base portions 140.

Then, the lower surface of the seedling transport pot 148 is covered with the flat portion 144a. Further, the pivotal position of the shirt 145 (fulcrum pin 146 and rotation support portion 145b) is provided at the front of the shutter 145 in the transport direction. The roller mounting portion 1450c is located on the left and right side of the rear side of the shutter 144 in the transport direction, and the plate surface is moved vertically downward with respect to the flat portion 1450a. It is a part that is bent so as to be parallel. A roller 1 47 is disposed in the roller mounting portion 1 4 5 c, and the roller 1 4 7 supports the support pin 1 4 9 in a horizontal direction perpendicular to the traveling direction and is rotatable with respect to the shutter 1 4 5 Pivoted on.

Rollers 1 4 7 provided on the shutter 1 4 5 roll on the guide rail 1 3 9 I am trying to.

FIG. 21 is a partial plan view of the seedling supply section. As shown in this figure, the rollers 147 are attached to the respective pot attachment bases 140, but in the transport direction (arrow A in FIG. 21). ), Rollers 147 are arranged alternately on the left and right. In other words, one seedling supply unit 1

In 07, the number of the pot mounting bases 1 4 0 '1 4 0' »'connected to each other is an even number, and when numbered in order, the pot mounting bases 14 0 located at an odd number and the pots positioned at an even number In the mounting base 140, the rollers are alternately left and right opposite to the transport direction.

1 4 7-1 4 7-· · is arranged. In other words, the odd-numbered (or even-numbered) rollers 147 are arranged on the inner peripheral side, and the even-numbered (or odd-numbered) rollers 147 are arranged on the outer peripheral side.

In addition, as shown in Fig. 22, an opening (or notch) is formed on the front side of the guide rail 13 9 above the fuselage on the path where the roller 1 47 rolls on the guide rail 13 9. 9 R

1 39 L is shifted from each other. Then, as shown in Fig. 21, a steel wire (piano wire) shaped so as to face the opening 1339R · 1339L goes to the slope 33R (33R) side. And a part thereof is formed so as to face diagonally downward, and its end is a flat portion 144 a of the rear side in the transport rotation direction when the shutter 145 is opened vertically downward. The steel wire B (piano wire) or the leaf spring (BT) is displaced from the mounting base (BM) so that it stops at a position where it cannot come back and swing back. It is attached to the left and right open / close guide section 340 and right open / close guide section 341 from the guide rail 139 with a fastening member (porto, etc.) N so that it can be adjusted vertically and horizontally.

As described above, in this embodiment, the double-row planting is used.

Increase the number of 1 4 7 and cut out the corresponding position of the guide rail 1 3 9 according to the path of the guide rail 1 3 9 through which each roller 1 4 7 passes. By taking measures such as setting, it is possible to increase the number of shutters 145 and the number of transplantation apertures 155, and to increase the number of planting strips. Along with this, a steel wire B and a leaf spring BT, which are urging means for forcibly pressing down the shutter 145 on the seedling supply side, are provided at the same time, and the operation is the same.

Using Fig. 23, the shutter 1 The operation of the steel wire B (piano wire) or the leaf spring BT wider than the steel wire B, which is a biasing means for opening the shutter 45 and the shutter 144 in the opening direction, will be described.

The fitting ring 1558, which is the main body of the pot mounting base 140, is a cylindrical body, and the seedling transport pot 148 is also formed of a cylindrical body. It is. The seedling transport pot 148 shows a state in which the seedlings 126 have been introduced, but in the actual working state, the seedlings fall from the seedling transport pot 148 shown to the transplanting part 120. It is something that is. The seedling transfer pot 148 into which the dropped seedling 1 26 has been inserted is transferred in the direction of arrow H. Let's say that the shirt at that time, 1 4 5, is assumed to be shutter 1 4 5 A. The roller 1 147 moves up along the slope 3 3 6 L (3 3 6 R), and as a result, the shutter 1 4 5 B in the next state is established, closing the bottom of the seedling transfer pot 1 4 8 Then wait for the next seedling 1 2 6 insertion. When it further moves to the side of the figure, it is shown as Shutter 1 145 D.

The state immediately before the next seedling 1 26 is inserted and immediately before the position corresponding to the transplant opening device 15 1 of the corresponding transplant section 120 in plan view overlaps is denoted by reference numeral 144 D. When the guide rail 1339 reaches the opening 1339L (1339R), the flat part of the roller mounting part 144c of the shutter 144 is attached diagonally downward by a steel wire (piano wire) B. After that, it is opened with the fulcrum pin 146 as a fulcrum by the weight of the shutter 145. At that time, the seedlings 126 drop at the same timing as the transplant opening device 151 of the transplanting part 120. At that time, the shutters 1 4 5 have inertia due to their own weight, and perform a pendulum motion, so that the tip of the steel wire B (leaf spring BT) has a shutter 1 4 5 so as not to disturb the posture when the seedlings are falling. Abuts against the flat surface portion 144a, so as to suppress the swing back. The shutter at that time is represented by reference numeral 144E. Since the transplanter 151 and the shirt 1145 have the same timing at the same time, two seedlings are supplied at the same time.

At this time, the mounting positions of the steel wire B and the leaf spring BT are respectively shifted back and forth, and the acting portions are respectively displaced inward in plan view.

In other words, the opening 1339R and 1339L have no support for the mouthpiece 144, and when the shutter 144 is rotated downward about the fulcrum pin 144, the pot is attached. The lower part of the base 140 is opened so that the seedlings 126 fall into the transplant 120. ing.

As shown in FIG. 18, the openings 1339R and 1339L are the seedling drop positions in the seedling supply unit 107, respectively. 15 1 are arranged so as to overlap each other in plan view.

The plurality of seedling transporters 150 are a group of seedling transporters 150 for dropping seedlings 126 from the left opening 1339 L (hereinafter, a seedling transporter 150 group for left transplantation). And a seedling carrier group 150 for dropping seedlings 126 from the opening 139R on the right side (hereinafter referred to as a seedling carrier group 150 for right transplantation).

Then, a group of seedling transporters 150 in which rollers 144 are arranged outside the circulation path in which the seedling transporter 150 moves is a group of seedling transporters 150 for left transplantation. The group of the seedling carriers 150 with the rollers 147 disposed inside is a group of seedling carriers 150 for right transplantation. As described above, each of the seedling carriers (for left transplantation and right transplantation) 150 has the shutters 144 opened simultaneously at the position where the seedlings 126 are transferred to the transplant opening device 151. Therefore, the fall posture is not disturbed, and the accuracy of transplantation can be improved.

Here, the detailed structure of the guide rail 1 ₃ 9. (This is an example of double-row planting)

The guide rails 139 are formed along a circulating path along which the pot mounting base 140 (the seedling carrier 150) moves.

As shown in FIG. 22, the guide rail 1 39 is formed in an oval shape so as to overlap the circulation path of the pot mounting base 140 in plan view.

In parallel with the circulation path, there are formed two rows (four rows in the case of four-row planting) in which the rollers 1 47 roll on the guide rails 13 9. Opening / closing guide section 3 4 1 The left opening / closing guide portion 340 located outside the circulation path guides the roller 147 of the seedling transfer body 150 for left transplantation, and the shirt 154 of the seedling transfer body 150 is formed. 5 is to open and close. Further, the right opening / closing guide section 3 41 located inside the circulation path guides the rollers 1 47 of the right transplanting seedling transfer body 150, and the shutters 14 of the seedling transfer body 150. 5 is to open and close.

The left opening 1339L overlaps the left opening / closing guide 3400 in plan view, and The overlapping portion is the opening guide portion 340a of the roller 147 in the left opening / closing guide portion 340. In the opening guide section 340a, the roller 147 provided on the seedling transfer body 150 for left transplantation falls downward by the action of the steel wire B or the leaf spring BT as the urging means, and the shutter 1 45 is released, and the seedling 1 26 falls from the seedling carrier 150.

Further, in the left opening / closing guide portion 340, a portion other than the opening guide portion 340a is the closing guide portion 340b of the roller 147. In the closing guide section 340b, the rollers 147 of the seedling carrier 150 for the left transplant are configured so that the rollers 147 cannot fall, and the shirt 145 is kept in a closed state. The seedlings are transported by the body 150.

In other words, the left opening / closing guide section 340 includes a closing guide section 340 on which the roller 147 of the seedling transfer body 150 for left transplantation rotates, and an opening on which the roller 147 falls. It consists of a guide section 3400a.

Similarly, the right opening / closing guide section 3 41 also has a closing guide section 3 4 1 b on which the rollers 1 4 7 of the seedling carrier 1 50 for right transplantation rotate, and an opening on which the rollers 1 4 7 fall. The guide section consists of 3 4 1a. 'Summarize the above. Openings 1339R and 1339L are opened along the circulation path in the oblong guide rail 1339 which is long in the left-right direction. The openings 1339R and 1339L are larger than the bottom area of the pot mounting base 140 so that the opening guides for opening the shutters 144 that allow the seedlings 126 to fall can be opened. Either 340a or 341a is formed. Specifically, one side is on the left and right sides with respect to the transport direction, and the other side is on the left and right sides. The non-located side is slightly wider than the bottom of the pot mounting base 140, and the seedlings 1 26 fall (the shirt 1 45 can rotate downward), but the pot mounting base 1 adjacent to the front and rear in the traveling direction Rollers 1 4 7 attached to 40 are prevented from dropping. That is, the openings 1339R * 139L are opened to the right and left opposite sides to the center line in the transport direction of the pot mounting base 140. The openings 1339R and 1339L are opened at a position three or five pitches away from the connected pot mounting base 140 in the transport direction (circulation path). The interval is adjusted to the line width (line interval).

Roller 1 4 7 at the end in the traveling direction within opening 1 39 L · 1 3 9 R Slope (inclined surface) 336 L · 33 R which gradually rises and is connected to the roller 1 47 rolling surface of the guide rail 13 9 is provided at the position where passes. The slope direction of the slope 3 3 6 L · 3 3 6 R is forward and backward with respect to the transport direction, and the shirt 1 4 5 closes gradually as the door 1 4 7 moves without being caught Like that.

The shutter 145 is opened and closed by being urged and pressed by a steel wire (piano wire) B or a panel BT that urges the flat part of the roller 147, and forcibly opened. This is determined by the presence or absence of the guide rail 1339 that the roller 1447 abuts below 47 (the presence or absence of the release guide portion 34Oa'34Ia). In addition, when the shutter 1445 is opened, the pendulum motion is performed by the inertia force in the portion where the guide rail 1339 is not provided due to the weight of the shutter 144 itself, but the steel wire (piano wire) B or The end of the panel panel BT is in contact with the flat part 144a of the shutter 144 to prevent swing back. If the shutter 1 45 swings back, the shaking shutter 1 4 5 interferes with the falling seedlings 1 2 6 and the falling posture of the seedlings is disturbed, but steel wire B or leaf spring Since the BT abuts on the flat part 1 45 a and prevents it from returning, it is supplied without disturbing the posture when transferring the seedlings 1 26 to the transplantation opener 15 1 I have. In particular, at the shutter 145, the roller 147 is guided to the slope 336L (or the slope 336R) when the shutter 145 is opened to closed. Since the opening and closing configuration of the shutters 144 is as described above, by setting the pivotal position of the shutters 144 to the front side in the transport direction as described above, the shutters 144 can be sloped 33 6 When it comes into contact with L (or slope 3 36 R), it always rotates in the closing direction.

In this way, the seedling transporter 150 is arranged in an oval shape in the seedling supply unit 107, and each seedling transporter 150 is located before the main worker and the auxiliary worker behind the machine are located. The seedlings 1 26 are inserted into the seedling transport pots 148 at the time of passing. When the seedling carrier 150 moves along the elliptical circulation path to the site where the transplanted part 120 is located in front of the path, the rollers 144, 147, which are three pitches away, are simultaneously made of steel. It is forced to open downward by the action of the line B or the leaf spring BT, and falls into the opening 13 9 R-13 9 L where the seedlings fall, and the shirt 1 4 5 · 1 4 5 pivots downward and opens. Then, the seedlings 126 held by the seedling carrier 150 fall, and are thrown into the transplantation apertures 151, 151 of the transplanting part 120.

Then, when the seedling carrier 150 passes through the seedling drop position, the rollers 144 and 147 come into contact with the slopes 3336L and 3336R and gradually ascend to the shutters 144. 1 4 5 is closed. In this way, the opening and closing of the shutters 145 have a simple configuration.

Therefore, seedlings are supplied alternately from one seedling carrier 150 to one transplant opening device 151. In other words, the odd bot mounting base 140 is the left (or right) of the left and right openings, and the even bot mounting base 140 is the right (or left) opening and the lower shutter 14. 5 will be opened, and the odd and even numbers will fall into the left and right (one and two or three and four) transplantation piercers 15 1 · 15 1. Therefore, the repetition of these makes it possible to plant two streaks at the same time, and the distance between the left and right streaks can be kept constant.

Next, a pair of transplantation apertures 151 and 151 provided in the transplantation section 120 and its lifting mechanism will be described.

As shown in FIG. 16 and FIG. 17, the transplanting section 120 located behind the transmission case 104 is provided with a seedling supply section 107 which is arranged on the left and right inside the fuselage. There are provided a pair of transplantation and opening devices 15 1 and 15 1 to be conveyed to 12 5, and an elevating mechanism of the transplantation and opening devices 15 1 and 15 1.

On one side of each of the left and right transplantation piers 15 1, there is a one-sided case. There are provided elevating guides 153 and arms, links, and the like for connecting them. The rotary case and the elevating guide 15 5 3 · 15 3 are fixed to the rear frame 105, and a transplantation opener 15 1-15 1 is arranged inside this, and the transplant opener 15 1-15-1 is configured to move up and down along a locus in side view below the seedling supply unit 107.

A transplanting part 120 is arranged below the seedling supply part 107 at the rear of the mission case 104. The transplantation section 120 is provided with a pair of left and right transplantation apertures 15 1 and 15 1 that can be opened and closed and vertically moved up and down. The transplant opening device 151 is configured to hold the seedling in a closed state and drop the seedling in an open state. Each transplant opening device 151 receives the seedling 126 from the seedling supply unit 107 at the top dead center side (the highest end side) of its own movement path. More specifically, the seedlings 126 that fall from the seedling transport pots 148 at the appropriate positions are thrown into the transplant opening device 151 from above.

In addition, each graft opener 15 1 enters the ridge 1 25 at the bottom dead center side (lowest end side) of its own movement path and becomes open, and the seedling 1 Form 26 planting holes and drop seedlings 12 into the planting holes.

Then, the soil is placed on the root of the seedling 1 26 by the covering ring 1 2 2 * 1 2 2 The porting work of 1 26 is completed.

The arrangement and configuration of various levers provided at the rear of the handle frame 106 serving as an operation handle will be described. The rear part of the handle frame 106 serves as the operator's operation unit 109 associated with the movement of the seedling transplanter 101, and various levers for operating the seedling transplanter 101 are provided here. ing.

As shown in FIGS. 17, 24, and 26, a plurality of levers are arranged in a space surrounded by the handle frame 106 and the seedling supply unit 107 in plan view. It is something to be done. On the right side in the space, a fuselage vertical lever 349 is provided so as to be supported by the right rear portion of the handle frame 106. Similarly, on the left side, a main clutch lever 350 is provided to be supported by the left rear portion of the handle frame 106. In the center of the space, a main shift lever 342 and a hydraulic lock lever 37 1 are arranged as shown in FIGS. 25 (a) and 29 to provide a seedling supply unit 107. It is provided in a configuration that is supported by the base frame 3776. The base frame 37 6 is supported by the handle frame 106 and the upper support frame 32 3. The main clutch lever 350 is an operating means for connecting and disconnecting the engine power from the traveling drive mechanism (the drive mechanism for the rear wheels 117-117) and the work drive mechanism (the drive mechanism for the transplant working device 150 OA). is there. The machine body vertical lever 349 is an operating means of the hydraulic cylinder 228, and is configured to also serve as a clutch lever of the transplant working device 15OA. The main transmission lever 342 is an operation means for switching the main transmission (described later).

As shown in FIG. 17 and FIG. 24, the main clutch lever 350 is formed in a T-shape in plan view. And, at the end of the horizontal axis that forms the T-shape, The main clutch lever 350 can be operated by workers located on either side of the fuselage (the ridge below the fuselage). (At this time, it is of course possible for the T-shaped horizontal bar to have the same length on the left and right.)

A mechanism for transmitting the driving force from the mission case 104 to the transplant working device 150A will be described.

As shown in Fig. 26, working unit drive shafts 1 1 4 and 1 1 4R are provided at the rear upper part of the transmission case 104, extending left and right from inside the transmission case 104, respectively. Has been.

The working unit drive shaft 111 L extending to the left (in the direction of travel) is used to drive a pair of left and right transplant apertures 15 1 · 15 1 provided in the transplant unit 120 to move up and down. The sprockets 1 2 7 and 1 2 7 are fixed. Then, power is transmitted from each of the sprockets 127, 127 through a chain, and a pair of transplantation apertures 151, 151 provided in the transplant portion 120 is driven.

On the other hand, a sprocket 313 for driving the seedling supply unit 107 is fixed to the working unit drive shaft 114R extending rightward. The power is transmitted from the sprocket 3 13 via the chain 37 5 (FIG. 28), and the seedling supply unit 107 is driven. Then, the seedling transfer pots 148 provided in the seedling supply unit 107 move along the elliptical connection trajectory, and transfer the seedlings 12 6 to the position where the seedlings are delivered to the transplantation hole 15 1 I do. Next, the shift switching means in the seedling transplanter 101 will be described.

The seedling transplanter 101 in the present embodiment is a transmission built in the transmission case 104, and performs a main speed changeover and a sub speed changeover. As shown in FIGS. 25 (a), (b), 26 and 27, the main fork rod 440 extends leftward from the transmission case 104. By moving the main fork rod 44 with respect to the transmission case 104, the engagement of the gears in the transmission case 104 is switched, and the main transmission is switched.

In the main shift switching of the seedling transplanter 101, "running" (moving traveling), "reverse", "neutral",

"Planting" (working) can be switched. “Traveling” (moving traveling) is switching to forward movement when not working, and “reverse” is switching to backward movement when not working. “Planting” (working) is a switch to forward movement during seedling transplantation. “Neutral” is a switch to stop running.

Also, as shown in FIG. 26, the sub fork rod 441 extends toward the right side of the mission case 104. When the auxiliary fork rod 4 41 is disengaged from the transmission case 104, the engagement of the gears in the mission case 104 is switched, and the auxiliary transmission is switched.

In the sub-transmission switching of the seedling transplanter 101 according to the present embodiment, two-stage (first speed / second speed) switching is possible. The two-stage shift switching in the sub-shift is a one-man (low), two-man (high) gear change.

Here, in the drive transmission configuration in the present embodiment, the engine output first receives the sub-speed change, then receives the main speed change, and the power that has received both speed change is taken out as the work output and the traveling output. It has become something. When performing transplantation work, when working alone, set the sub transmission to “low” (single operation) and set the main transmission to “planting”. During two-person work, the sub-shift is set to "high" (two-person work) and the main shift is set to "planting". When traveling, regardless of the number of workers, switch the sub-shift to "high" (two-person operation) and select "move" for the main shift before traveling.

As shown in FIGS. 26 and 28, a handle 441a is provided at the projecting end of the sub fork rod 441, and the sub fork rod 441 itself is a sub speed lever. It is configured as

The worker moves to the front right side of the seedling transplanter 101, disengages the sub speed change lever (sub fork rod 4 4 1) protruding from the right side of the mission case 104, and moves the sub speed change. Can be switched. (At this time, in order to operate the auxiliary transmission lever, the seedling platform 13 1 · 1 3 1 is pivoted in a protruding manner to the top of the ridge through the groove (valley) between the adjacent ridge. Because of this, problems such as stepping on the ridges 1 25 in relation to the rear wheel occur, so it is desirable to be able to connect with a rod ゃ wire etc. so that it can be operated directly from the operation control unit 109 Is.)

The arrangement of the main transmission levers 3442 will be described.

As shown in FIG. 16, FIG. 17, FIG. 24, FIG. 25, FIG. 28, and FIG. 2 is arranged behind the seedling supply unit 107. The main transmission lever 3 4 2 is located below the seedling supply section 107. It is connected to the main fork rod 44 through a link. As shown in Fig. 22, the main transmission lever 3442 is located at the center of the space surrounded by the handle frame 106 and the seedling supply unit 107 in plan view. It can be operated from both left and right sides.

The configuration of the link will be described.

As shown in FIG. 26, FIG. 28, FIG. 29, and FIG. 30, a long member extends from the left side of the transmission case 104 to the rear of the seedling supply unit 107. The link ports 4 4 3 are arranged substantially horizontally in the front-rear direction. The link rod 4 4 3 is rotatably supported by the left and right sides of the transmission case 104 and the rear end of the base frame 3 76 6 of the seedling supply section 107 via a receiving member. It has become something.

The arrangement position of the link rods 443 is the lower side of the seedling supply part 107 (seedling transport pot 148 stations) in the vertical position. In the left-right direction, it is located between the left and right transplantation apertures 151, 151, the left side of the transmission case 104, and the center of the handle frame 106.

As shown in FIG. 26, FIG. 27 and FIG. 28, a rod receiver 444 having a U-shape in plan view is fixed to the left side surface of the transmission case 104. The rod receiver 444 is the receiving member at the front side of the link rod 443. The mouthpiece receiver 4 4 4 is formed by bending a plate material and is composed of three plate-like portions. A pair of support portions 4 4 4 a 4b are arranged in front and rear, and a mounting portion 4444c, which is a central plate-shaped portion, is fixed to a side surface of the transmission case 104 by a fastening means such as a port.

Each of the support portions 4 4 4 a and 4 4 4 b located at the front and rear is formed with a through hole for passing the link rod 4 4 3. It is rotatably supported with respect to 44.

At the front of the link rod 4 43, a link arm 4 45 for connecting the link rod 4 4 3 and the main fork rod 4 40 is fixedly provided. The link arm 4 4 5 is located behind the rod receiver 4 4 4.

As shown in FIG. 26, FIG. 27, and FIG. 30, an engagement pin 446 extending rearward is fixed to the tip of the main fork rod 44, and a link arm is provided. 4 4 5 Each has an engaging hole 445a through which the engaging pin 446 is inserted. The engaging hole 4 45 a is formed as a long hole along the extending direction of the link arm 4 45, and the engaging pin 4 4 6 is long and up and down with respect to the left and right rotation of the link arm 4 45. The main fork 4440 is allowed to move, and is inserted into and removed from the transmission case 104 (left and right movement).

On the other hand, as shown in FIGS. 28 and 29, a support plate 347 having an inverted L-shape in a side view is fixed to the rear end of the base frame 376. The support plate 347 is the receiving member on the rear side of the link rod 443. The support plate 347 is formed by bending a flat plate member, and has a support portion 347a extending vertically and a display portion 340 extending rearward from the upper end of the support portion 347a. 7b.

A pillow block 3448 is fixed below the support plate 347, and the link rod 343 is rotatably provided on the pillow block 348. The link rod 443 is rotatably supported on the body frame by a front rod receiver 4444 and a rear pillar block 3448.

As shown in FIGS. 25 (a) 'and (b), a main speed change lever 3442 is fixed to the rear end of the link rod 443. The main transmission lever 3 4 2 is provided so as to extend above the rear end of the link rod 4 4 3, and the handle 3 4 2 a of the main transmission lever 3 4 2 is located above the handle frame 10 6. It is what you do.

Then, the operator grips the main transmission lever 342 and turns it left and right to move the main fork rod 440 to the mixing case 104 via a link composed of the link rod 443 and the like. And perform the main gear changeover operation. The switching positions by turning the main shift lever 3 4 2 right and left are “traveling” (moving traveling), “neutral”, “planting” (work traveling), “neutral”, and “reverse” in order from the left. I have.

In addition, the upper surface of the portion extending rearward at the upper end of the support plate 347 serves as a display portion 347b, which functions as a nameplate for speed change switching, and corresponds to the main speed change position. Characters such as "traveling" (moving traveling) are written. Then, the operator can grasp the switching position by looking at the display (characters) on the display section 347b as a shift nameplate. Here, the seedling transplanter 101 is used to supply seedlings to the transplant opening device 15 1, 15 1 and the transplant opening device 15 1 With part 107 A mission case 104 is arranged in front of the seedling supply unit 107, and an operation handle (handle frame 106) extending behind the seedling supply unit 107 is provided. In the seedling transplanter having the above-described configuration, the shift lever (main shift lever 342) is disposed inside the operation handle behind the seedling supply unit 107.

Therefore, compared with the case where the shift lever (main shift lever 342) is provided on the side of the transmission case 104, the length of the lever itself is shortened, rigidity is increased, and operation of the shift lever is performed. The gear change is assured. In addition, by providing the gearshift lever behind the seedling supply unit 107, the gearshift nameplate (display unit 347b) can also be provided behind the seedling supply unit 107. It is easy to grasp. Therefore, the operability of the shift lever can be improved.

In the seedling transplanter 101 of the present embodiment, in the transmission case 104, the main transmission can be switched and the auxiliary transmission can be switched, and operation means for performing both switchings is provided. The operating means are a main transmission lever 342 and an auxiliary transmission lever (auxiliary fork rod 441).

As described above, the main transmission lever 342 is disposed behind the seedling supply unit 107, and the transmission lever is located below the seedling supply unit 107 via the link. The gear is connected to a fork rod (main fork rod 440) that switches the speed in the mission case 104.

Here, the auxiliary transmission lever is also disposed behind the seedling supply unit 107, and the transmission lever is placed below the seedling supply unit 107 via the link in the mission case 104. It may be configured to be connected to a fork rod (sub-fork rod 4 4 1) that switches gears with.

In this way, by providing the sub-transmission lever in the rear of the seedling supply unit 107 via the link similarly to the main transmission lever 34, the mission case 104 is operated for operation of the sub-transmission lever. There is no need for the operator to move to the side, and operability is improved.

In addition, the same effect as the main shift lever 3 4 2, that is, the speed change switching by operating the shift lever is ensured, and the shift nameplate can be provided at the position where the operator can visually recognize the light, thereby improving operability. Is achieved. In addition, H-shaped lever It is also possible to provide a gear so that the main transmission and the sub transmission can be operated with one lever.

Next, a description will be given of a speed change mechanism relating to inter-stock adjustment.

The inter-stock adjustment is performed by changing the work drive speed (drive speed of the transplant working device 15OA) relative to the travel drive speed.

As shown in FIG. 31, the seedling transplanter 101 is provided with a belt-type continuously variable transmission device 352 as this transmission means.

As shown in FIG. 26, the belt-type continuously variable transmission 352 is a continuously variable transmission pulley 3553 composed of a pair of split pulleys 3553a3553a, and an output pulley. 3 5 4 is provided, and the belt between the two pulleys 3 5 3-3 5 4 is wound by a belt 3 5 5.

The continuously variable speed pulley 3 5 3 has an outer split pulley 3 5 3 a fixedly mounted on the input shaft 3 5 6 protruding outside the mission case 104, and an inner split pulley 3 5 3a is provided slidably in the axial direction on the inter-shaft transmission input shaft 3556, and attached to the outer split pulley 35 53a side by a spring 3884 provided on the inter-shaft transmission input shaft 3556. The engine power after the main shift and the sub-shift is transmitted to the inter-shift input shaft 356.

The output pulley 354 is also fixed to an inter-shaft transmission output shaft 357, which also projects to the outside of the transmission case 104. The inter-stock transmission output shaft 357 has a belt-type continuously variable transmission. The power after shifting in the device 352 is transmitted. The inter-stock speed change output shaft 357 is connected to the working unit drive shaft 114 L · 114 R via a gear or the like in the transmission case 104.

The belt-type continuously variable transmission 352 is provided with a tension roller 358 that comes into contact with the belt 365 from inside as a speed change switching means. However, the tension roller 358 may be configured to bias from outside to inside.

The continuously variable speed pulley 35 3 includes a pair of split pulleys 35 3 a and 35 3 a having the inside formed in a taper shape, and a double split pulley 35 3 a Means (spring 384) for urging a to approach are provided.

Then, the diameter of the contact position between the continuously variable pulley 35 3 and the belt 35 5 can be changed by the change in the position of the tension port 35 8. Tension mouth The distance between the split pulleys 3 5 3 a and 3 5 3 a is increased as the roller 3 5 8 is moved outside the belt 3 5 5, and the diameter at which the continuously variable pulley 3 5 3 contacts the belt 3 5 5. Becomes smaller. Conversely, as the tension roller 3 5 8 is moved inside the belt 3 5 5, the inner split plate 3 5 3 a is pushed by the spring 3 8 4 and the continuously variable pulley U 3 5 3 and the belt 3 5 The diameter of contact with 5 increases.

In this way, by changing the diameter at which the belt 355 contacts the continuously variable transmission pulley 355, the rotation speed of the shaft between the interstock transmission input shaft 356 and the interstock transmission output shaft 357 is changed. Can be continuously changed.

A moving mechanism for changing the position of the tension roller 358 will be described. As shown in FIG. 31, as this moving mechanism, a stock adjustment handle 365, and a first link connecting the stock adjustment handle 365 and the tension roller 358 are provided. The inter-stock adjustment handle 359 is an operating means for the inter-stock adjustment by an operator.

The first link is constituted by a tension arm 360 provided rotatably on the right side surface of the transmission case 104. The tension arm 360 is formed in a V-shape, and is pivotally connected to the transmission case 104 at a connecting portion (middle portion) of two sides forming a V-shape, and one end is connected to the stock adjustment handle 365. A tension roller 358 is rotatably provided at the other end. However, the tension arm 360 may be configured as a straight arm, one end of which is pivotally supported, and connected to the stock adjustment handle 365 in the middle.

The inter-training adjustment handle 359 is formed in a substantially inverted L-shape. A screw portion 359 b is formed at the tip of the longitudinal axis 359 a forming the L-shape, and the screw is formed. The part 359 b is screwed with a screw receiver 360 a pivotally supported at one end of the tension arm 360. In the inter-stock adjusting handle 359, a handle 359d is rotatably provided at the end of the horizontal shaft 359c forming an L-shape. And, by rotating the handle 359 d around the vertical axis 359 a, the vertical axis 359 a rotates coaxially, and the tension arm 360 provided with the screw receiver 360 a becomes Rotate up and down. Note that the inter-stock adjusting handle 359 is provided on the mission case 104 as follows so that the position does not substantially change regardless of the rotation of the handle 359 d. Vertical The shaft 3559a is passed through a bearing 361, which is provided in the mission case 104, so that it can rotate around the axis with respect to the bearing 361, and cannot move in the axial direction (it cannot move in the vertical direction). Noh). Since it is rotatable around the axis, the 'vertical axis 359a rotates with the rotation of the handle 359d. The bearing 36 1 is provided on the right side of the transmission case 104 so as to be rotatable with respect to the transmission case 104 in a side view (ie, rotatable about the left and right directions as a rotation axis). ing. By rotating the inter-stock adjusting handle 365, the screw receiver 360a can be moved not only up and down but also left and right so that the tension arm 360 can rotate without resistance. However, the operation shaft may be extended to one end of the vertical axis 359a via a bevel gear or a universal joint to the operation unit 109 so that the operation can be performed.

The belt-type continuously variable transmission 352 is provided with an indicator 362 for displaying a shift amount by the inter-stock adjustment handle 359.

As shown in Fig. 32, on the right side of the case 104, a side cover 363 covering the case 104 is provided with a pivot shaft 364 of the tension roller 358. An elongate hole 363 a is formed along the moving direction (rotation locus) of the shaft, and the pivot shaft 364 projects outward from the side cover 363 so as to be movable.

Here, the pivot shaft 364 is a shaft for pivotally connecting the tension roller 358 and the tension arm 360, and moves on an arc by the rotation of the tension arm 360. By providing a display portion 363 b formed by a scale around the formation direction of the long hole 36 3 a, an indicator 36 using the pivot shaft 36 4 as a guide is provided. 2 are configured. The indicator 362 is configured by using a change in the position of the tension roller 358.

(Current stock distance) is displayed.

As described above, in the seedling transplanter 101, the driving speed of the transplanting device 15 OA and the driving speed of the transplanting device 15 OA, which transfer the seedling in conjunction with the running of A variable belt-type continuously variable transmission 352 is provided.

A tension roller 35S is provided between the input pulley and the output pulley of the belt-type continuously variable transmission 352, and the tension roller 2558 is supported.

The speed is changed by rotating the arm 360, and the tension arm 360 In the vicinity of the moving part of the city, there is a singing tower.

In this embodiment, the input side pulley is a continuously variable speed pulley 353 and the output side pulley is the output pulley 354, but the continuously variable speed pulley may be the output side. Therefore, the adjusted value between the stocks can be visually checked by the operator, and the reproducibility of the inter-stock adjustment is secured. Therefore, the operability of the seedling transplanter 101 is improved. Further, in the present embodiment, the moving mechanism of the tension roller 358 is connected to a tension adjusting handle 359 provided on the machine body and a tension arm 360 by screwing the tension adjusting handle 359. And a hook shaft 365 of the tension roller 358 is used as a pointer of the indicator 362.

For this reason, the indicator 36 2 can be manufactured with a simple configuration, which leads to cost reduction.

Further, in the present embodiment, the pointer in the above-mentioned indication is the pivot shaft 364 provided on the tension roller 358, but the present invention is not limited to this configuration. The position of the indicator pointer may be, for example, the screw receiver 360 a provided at the end of the tension arm 360 opposite to the pivot shaft 365.

In other words, if the position change occurs in conjunction with the operation of the inter-stock adjustment handle 359 (excluding rotation of the vertical axis 359a), the tension roller 358 A guide may be provided in any of the above parts. Here, another embodiment (second embodiment) having a different configuration of the indicator will be described with reference to FIG. In the belt-type continuously variable transmission 365 according to the second embodiment, the configuration of an indicator for displaying stock information is different. In the following, the same members as those of the belt-type continuously variable transmission 352 are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 33, the belt-type continuously variable transmission 365 also includes an ink jet motor 36 6 configured by utilizing a change in the position of the pivot shaft 364 of the tension roller 3558. It is set up.

The ink tank 36 6 6 has a long hole 3 6 7 a formed in the upper cover 3 6 7 covering the mission case 10 4, and is movable along the forming direction of the long hole 3 6 7 a. Guidance 3 6 8 is provided. The long hole 367a is formed in a vertical direction, and a display portion 3657b with a scale is provided around the long hole 365a in the direction of formation.

The pointer 368 and the pivot shaft 364 are connected via a connecting rod 369. In addition, the movement of the pointer 3668 is restricted by a guide member provided around the long hole 367a so that the pointer 3668 can be moved only along the forming direction of the long hole 367a. ing. Then, in conjunction with the movement of the circular path of the tension roller 358, the connecting rod 369 moves, and the pointer 368 moves along the forming direction of the long hole 369a.

With the above configuration, information on the stocks is displayed at 366.

As described above, in the belt type continuously variable transmission 3 65, the tension roller 3

The moving mechanism 58 includes an inter-stock adjusting handle 359 and a link connecting the inter-stock adjusting handle 359 and the tension roller 358. This link is referred to as the first link for convenience of explanation.

In addition, the pointers provided for Inge Ike 36 6

It is linked through 6 9. Here, the connecting rod 365 is a link that connects the pointer and the pivot 364 that is a part of the moving mechanism. The link is a link (second link) different from the first link.

For this reason, the arrangement position of the indicator 366 indicating the inter-stock information can be set regardless of the arrangement position of the first link. Therefore, the operator can easily view the indicator 366 all at once, and the operability is improved.

Note that in another embodiment of the present invention, the part to which the pointer 3668 of the indicator 3666 is connected via the connection port 3669 (second link) is the pivot mechanism of the moving mechanism. The axis is 364, but it is not limited to this part. If the position changes (excluding rotation of the shaft 359a, etc.) in conjunction with the operation of the inter-stock adjustment handle 359 (excluding rotation of the shaft 359a) (that is, if it is a part in the movement mechanism), the inter-stock adjustment Any part from the handle 359 to the tension roller 358 may be used.

Next, the hydraulic control of the hydraulic cylinders 228 will be described.

As shown in Fig. 34, hydraulic oil is supplied from hydraulic pump 37 9 to hydraulic cylinder 22 8. A hydraulic direction switching valve 378 and a hydraulic lock valve 370 are provided on the oil passage for supplying oil.

The hydraulic pump 379 is provided on the front side of the transmission case 104, as shown in FIGS. 16 and 30.

The hydraulic direction switching valve 378 is connected to the body vertical lever 349 via an elevating link 382, and can be switched by an operator via the operation operation unit 109. The hydraulic lock valve 370 is connected to a hydraulic lock lever 371 via an opening / closing link 383, and can be switched by an operator via an operation operation unit 109.

The hydraulic direction switching valve 378 is switched by an aircraft vertical lever 349 provided in the operation section 109, and can be switched between three positions of “aircraft raising”, “neutral”, and “body lowering”. It is possible.

In the switching of the “body lift”, pressurized oil is supplied to the hydraulic cylinders 228 to drive the elevating link mechanism, and the body rises against its own weight. In the switching of the “body lowering”, the oil in the hydraulic cylinder 228 is released, and the oil is drained to the hydraulic oil tank 108 as the body lowers due to its own weight. Also, in the switching of the “neutral”, the oil in the hydraulic cylinders 228 is locked, and the aircraft is maintained in the neutral state without rising or lowering.

The hydraulic lock valve 370 is a valve that switches an oil passage for supplying hydraulic oil to the hydraulic cylinder 228 to an open or closed state.

When the hydraulic lock valve 370 is switched to “closed”, the oil passage is closed regardless of the switching of the hydraulic direction switching valve. The operation is the same as the “neutral” switching of the hydraulic direction switching valve, and the aircraft is maintained in the neutral state. In addition, when the hydraulic lock valve 370 is switched to “open”, the switching of the hydraulic direction switching valve 378 is enabled, and the body can be raised and lowered.

That is, the hydraulic lock valve 370 is a means for maintaining the vertical position of the body in a neutral state, and ensures the “neutral” switching by the hydraulic direction switching valve 378.

The opening / closing operation means of the hydraulic lock valve 370 will be described.

As shown in FIG. 30, the hydraulic lock valve 3700 is connected to the main fork rod 4 It is provided in front of 40. The opening / closing operation means of the hydraulic lock valve 370 is the same as the switching operation means of the main transmission, and has a structure in which some constituent members are shared. As shown in Fig. 16, Fig. 17, Fig. 25, Fig. 28, Fig. 29, a hydraulic lock lever 37, which is an operator's means for opening and closing the hydraulic lock valve 37, is shown. 1 is arranged behind the seedling supply unit 107. The hydraulic lock lever 371 is connected to the hydraulic pulp 370 through an opening / closing link 383 below the seedling supply 咅 15107.

In addition, as shown in FIGS. 25 and 29, the main speed change lever 342 and the hydraulic lock lever 371 are arranged at positions that overlap in a rear view.

The configuration of the opening / closing link 383 will be described.

As shown in FIGS. 29 and 30, a link rod 372, which is a long member, is arranged from the left side of the transmission case 104 to the rear of the seedling supply section 107. You. The link rod 372 is provided above the link rod 443. The left side surface of the transmission case 104 and the rear end of the base frame 3776 are supported substantially horizontally in the front-rear direction via a receiving member. The two receiving members are the same as the receiving members of the link rods 443 (described below). Therefore, the arrangement position of the link rods 372 is the lower side of the seedling supply section 107 (the seedling transport pot 148 stations) in the vertical position. In the left-right direction, there is a gap between the left and right transplantation apertures 151 and 151.

As shown in FIGS. 26 and 30, the receiving member on the front side of the link rod 372 is the rod receiver 444.

In the mouthpiece receiver 4 4 4, the front and rear support portions 4 4 4 a and 4 4 4 b are respectively formed with through holes for passing the link rod 3 7 2. The link rod 37 2 is rotatably supported by the rod receiver 4 44.

The front end of the link rod 372 is connected to the valve switching shaft of the hydraulic lock valve 370, and the hydraulic lock valve 370 can be switched by the coaxial rotation of the link rod 372. It has become.

As shown in FIGS. 25 (a) and (b), the receiving member on the rear side of the link rod 37 2 is Support plate 3 4 7.

On the support plate 347, a bearing 373 is fixed above the pillar block 348, and the link rod 372 is rotatably provided on the bearing 373. I have. The link rod 3 72 is rotatably supported by the body frame by the front rod receiver 4 4 4 and the rear bearing 3 7 3.

As shown in FIGS. 25 (a) 'and (b), a hydraulic lock lever 371 is fixed to the rear end of the link rod 372. The hydraulic lip lever 371 is provided so as to extend above the link rod 372.

Then, the operator turns the hydraulic lock lever 371, left and right, so that the opening and closing of the hydraulic lock valve 3700 is switched via the opening / closing link 383 made up of the link rod 372 and the like. The operation of the hydraulic lock valve 370 is enabled. The switching position by the left and right rotation of the hydraulic lock lever 371 is "closed" and "opened" in order from the left.

A display section 347c is provided on the support section 347a corresponding to the switching position by the hydraulic lock lever 371, and the display section 347c is provided with "closed" and " The word “open” is displayed.

Here, the seedling transplanter 101 lifts and lowers the support frame of the transplant opening device 15 1 · 1 5 1 and the transplantation opener 15 1-1 5 1 that move up and down to transplant seedlings. The hydraulic cylinder 228 is provided. In the present embodiment, the support frame of the transplantation opener 151 is an airframe that includes a handle frame 106, a rear frame 105, and the like.

The opening / closing operation means of the hydraulic lock valve 3700 of the hydraulic cylinder 222 is a hydraulic lock lever 371, and the hydraulic lock lever 371 is an operation handle (a handle frame 110) extending rearward of the machine. 6).

Therefore, the worker can lock the hydraulic pressure of the hydraulic cylinder 228 without moving away from the operation position where the operation handle (the handle frame 106) is located. Therefore, the operability of the seedling transplanter is improved.

Next, referring to FIG. 24, the different opening / closing operation means of the hydraulic lock valve 370 will be described. An example will be described.

As shown in FIG. 24, in another embodiment of the hydraulic control mechanism of the hydraulic cylinder 2 28, the machine vertical lever 3 49 is linked with the hydraulic lock lever 3 71 to 3 4 9 operation, hydraulic direction switching valve 3 7 8 and hydraulic lock valve 3

70 can be switched.

One end of a plate 386 extends on the inner side surface of the movable base of the fuselage vertical lever 349, and the other end of the plate 386 is fixed to one end (right end) of a connecting rod 385. . The connection port 3 8 5 is slidably supported on the body left and right, and the connection port 3

85 is biased rightward by a spring 387. The other end of the connecting rod 385 is pivotally connected to a hydraulic lock lever 371. In such a configuration, the hydraulic lock can be performed by rotating the upper and lower levers 3449 in the neutral position in the locking direction (leftward).

Here, the seedling transplanter according to another embodiment also includes a transplant opening device 15 1, 15 1, which moves up and down to transplant seedlings, and a support frame for the transplant opening device 15 1, 15 1 It is provided with a hydraulic cylinder 228 that moves up and down. In the present embodiment, the support frame of the transplantation opener 151 is a body frame composed of the handle frame 106, the rear frame 105, and the like. In addition, a switching lever (aircraft vertical lever) 349 of the hydraulic direction switching valve 378 of the hydraulic cylinder 228 is provided on an operation handle (handle frame 106) extending rearward of the airframe.

The switching lever 349 of the hydraulic direction switching valve 3780 of the hydraulic cylinder 2228 and the closing switching means of the hydraulic lock valve 3770 are linked and connected.

For this reason, there is no need to provide an opening / closing operation means for the hydraulic valve 370. In addition, when the seedling transplanter is stopped in the field, the hydraulic pressure can be neutralized when the seedling transplanter is stopped in the field.

Claims

The scope of the claims

1. A seedling supply unit arranged on the body of the machine, and a seedling table arranged on the side of the seedling supply unit, the seedling table is configured to be horizontally rotatable and vertically movable up and down. In a seedling transplanter configured such that a seedling supply unit and a seedling table rotated to the seedling supply unit side are arranged vertically, the seedling transplanter is rotated to a position above the seedling supply unit. A seedling transplanter, characterized in that the seedling transplanter is provided with a regulating means for regulating the lowered seedling table at a predetermined height.

2. A seedling transplanter for transplanting seedlings in conjunction with running of the airframe, comprising a transplant opening device for vertically raising and lowering and transplanting seedlings, and a seedling supply unit for supplying seedlings to the transplant opening device. The seedling supply unit is configured to rotationally drive a seedling transfer pot connected in an oval shape, dropping the seedling from an appropriate position on an elliptical movement trajectory of the seedling transfer pot, and A seedling transplanter of a form inherited by the transplantation opener and transplanted to a field, wherein the seedling transport pot is provided with a shutter capable of opening and closing a bottom surface, and the shutter is opened by an urging means; A seedling transplanter characterized by being forcibly energized.