JP3746059B2 - Vegetable transplanter - Google Patents

Description

  In the present invention, a seedling is introduced into a transplanted nail from a seedling supply unit, the transplanted nail is moved onto the cocoon, the transplanted nail is opened, the seedling is dropped onto the cocoon, and the soil is covered with a soil ring and transplanted. More particularly, the present invention relates to a technique for supplying seedlings to transplanting nails of a transplanting machine for transplanting onion seedlings.

2. Description of the Related Art Conventionally, a technique of a vegetable transplanting machine that is introduced into a transplanting nail of a vegetable transplanting machine, rotates the transplanting nail, and is transplanted to a farm field is known.
For example, it is a technique of Unexamined-Japanese-Patent No. 2001-258319. The vegetable transplanting machine supplies seedlings from the side so that the seedling transport pot is arranged around the disk-shaped supply stand with a predetermined interval, and is rotated and transported above the transplanting nails. It was made to rotate and fall from the upper direction of a transplant nail, and this transplant nail was set as the structure driven with a crank from the front.
Japanese Patent Application Laid-Open No. 2002-84826 discloses a technique in which a seedling supply unit that supplies seedlings to transplanted claws is configured by connecting a plurality of seedling transport pots with a chain. In this technique, the number of seedling transport pots arranged in the seedling supply unit is increased as compared with a round turntable, and the busyness of the seedling supply operation is reduced.

JP 2001-258319 A JP 2002-84826 A

In the technique of Japanese Patent Laid-Open No. 2001-258319, in the configuration in which seedlings are supplied from the side of the supply table, the distance between the supply position and the upper part of the transplanting nail is short, so the seedling transport pot immediately reaches the upper part of the transplanting nail, Supply work becomes very busy. In addition, since the transplanting claw is driven by the crank, it is cantilevered, and there is a possibility that uneven wear occurs due to insufficient rigidity.
Moreover, in the said Unexamined-Japanese-Patent No. 2002-84826, since the seedling conveyance pot is connected via the chain, compared with the case where a seedling conveyance pot is inserted in the turntable in which the insertion part was formed, positioning a conveyance position Is difficult. That is, it becomes difficult to cause the seedling to fall from the seedling transport pot in conjunction with the transplanting claw. In this technique, no specific solution means such as a method for stabilizing the positioning at the seedling dropping position or a chain tension adjustment is shown.
Therefore, the present invention is configured so as to reduce the contact impact between the sprocket lower projection formed on the seedling carrier and the lower end of the sprocket, and the outer end surfaces of both sprockets engage with the outer periphery of the seedling carrier. In this case, it prevents a problem that an impact occurs or the sprocket cannot enter the lower side of the lower end surface.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
In a vegetable transplanting machine, in which seedlings are put into the transplanting claws from the seedling supply unit provided on the machine frame, and the transplanted claws are moved onto the cocoon and transplanted, the seedling supply unit is driven left and right on the machine frame A sprocket and a driven sprocket are arranged, a seedling carrier into which seedlings are inserted is connected in a chain shape, wound between the sprockets, and a chamfer is formed on the outer periphery of the lower ends of both sprockets to form a seedling carrier. In this configuration, the contact impact between the sprocket lower projection and the lower end of the sprocket is reduced.

Since the present invention is configured as described above, the following effects can be obtained.
In a vegetable transplanting machine, in which seedlings are put into the transplanting claws from the seedling supply unit provided on the machine frame, and the transplanted claws are moved onto the cocoon and transplanted, the seedling supply unit is driven left and right on the machine frame A sprocket is formed on the seedling carrier by arranging a sprocket and a driven sprocket, connecting a seedling carrier to which seedlings are inserted into a chain, winding the sprocket between the sprockets, and forming a chamfer around the outer periphery of the lower ends of both sprockets. Since the abutment impact between the downward projecting portion and the lower end of the sprocket is reduced, when the outer end surfaces of both sprockets engage with the outer periphery of the seedling carrier, an impact occurs or the lower end surface of the sprocket The problem of not being able to enter the lower side is prevented.

  Next, embodiments of the invention will be described. 1 is a side view showing the overall configuration of a walking type vegetable transplanter according to an embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a side view of a fuselage frame and a mission case portion, and FIG. FIG. 5 is a plan view of the seedling supply part, FIG. 6 is a rear sectional view of the inheriting part, FIG. 7 is also a plan view, FIG. 8 is a rear view of the transplanting part, and FIG. FIG. 10 is also a plan view, FIG. 11 is a side sectional view of the graft nail, FIG. 12 is a side view of the pressure wheel support portion, and FIG. 13 is a rear view of the pressure wheel portion.

A walking type vegetable transplanter for onion according to an embodiment of the present invention will be described from the overall configuration.
1 and 2, the vegetable transplanter 1 has an engine 3 mounted on the front part of the body frame 2, and a traveling mission case 4 and a planting mission case 5 are arranged on the front and rear center part, and the rear part of the body frame 2. A handle frame 6 serving as a handle member is provided in a horizontal direction from the rear to the rear, a seedling supply unit 7 is disposed on a middle portion of the handle frame 6, and a rear portion of the handle frame 6 is used as a driving operation unit 9.

A front wheel support shaft 10 is horizontally mounted on the front part of the body frame 2, one end of the front wheel support frame 11, 11 is attached to both sides of the front wheel support shaft 10, and the front wheel 12 is connected to the other end of the front wheel support frame 11, 11.・ We support 12.
Further, the rotation support shafts 13 and 14 are horizontally mounted from the middle part of the body frame 2, the rear wheel drive shaft 15 protrudes laterally from the traveling mission case 4, and the drive cases are provided on both sides of the rear wheel drive shaft 15. The rear wheels 17 and 17 are supported on the rear portions of the drive cases 16 and 16. The front wheel support frame 11 and the drive case 16 are connected via a link mechanism, and the drive case 16 is connected via a hydraulic cylinder 19 provided at the lower part of the machine body frame 2 and the link mechanism. As a result, the front wheel support frame 11 and the drive case 16 are rotated about the front wheel support shaft 10 and the rear wheel drive shaft 15 so that the airframe can be raised and lowered.

  And the transplant part 20 is arrange | positioned under the seedling supply part 7 in the rear part of the planting mission case 5 and between the rear frames 2b and 2b described later, and the transplant part 20 can be protected by the rear frames 2b and 2b. The transplanting claw 51 is moved up and down, the seedling 26 is received from the seedling supply unit 7 at the upper end position, the transplanting claw 51 is opened at the lower end position, the seedling is dropped on the heel 25, and the seedling is placed by the covering ring 22 arranged behind it. The soil is brought close to the root of the tree and covered and transplanted.

Next, the configuration of each unit will be described.
First, the chassis that supports the traveling unit and the planting unit will be described. As shown in FIGS. 3 and 4, the chassis connects the body frame 2, the traveling mission case 4 and the planting mission case 5 connected to the body frame 2, and the traveling mission case 4 and the planting mission case 5. The connecting plate 30 is a connecting member, and the handle frame 6 that connects the planting mission case 5 and the body frame 2 is connected and fixed to reinforce each other without the need for a reinforcing member, thereby increasing rigidity. .

  The fuselage frame 2 is formed in a substantially reverse “h” shape when viewed from the side, and the fuselage frame 2 is constituted by a front frame 2a and a rear frame 2b, and is connected at a substantially front and rear central portion, and the front frame 2a is plate-shaped. The engine 3 is placed and fixed on the front part, and the traveling mission case 4 is placed and fixed on the rear part via a stay 2c. The rear frame 2b is configured in a plan view shape with pipes extending rearward from the left and right sides from the horizontal frame 2d, and the rear end of the front frame 2a is fixed to the horizontal frame 2d in the horizontal direction at the front. Yes. A middle pillar 2e is erected from the middle of the front and rear of the left rear frame 2b. Further, the rotation fulcrum shaft 13 is supported at the rear part of the front frame 2a and protrudes laterally, the rotation fulcrum shaft 14 is supported on the extension of the horizontal frame 2d, and the rear wheel drive shaft 15 is provided at the lower part of the traveling mission case 4 respectively. It is supported parallel to the horizontal direction.

  Then, the left and right center lines in the front-rear direction of the front frame 2a are used as the center line of the traveling part (airframe), and the pivot support shafts 13 and 14 and the rear wheels are deviated to the left and right sides (the left side in the traveling direction in this embodiment). When the drive shaft 15 is extended to the side and the vegetable transplanter 1 travels across the rod 25, the traveling part travels with the left and right sides deviated to the left and right as will be described later. It is possible to transplant 2 rows per side (1st and 2nd on the outbound route, 3rd and 4th on the return route). The left and right front wheels 12 and 12 and the rear wheels 17 and 17 can be adjusted in left and right positions (vehicle width) in accordance with the shape and width of the flange 25.

  2 and 3, the front part of the handle frame 6 is connected to the rear part of the rear frame 2b and the upper part of the middle pillar 2e, and the front part of the handle frame 6 is connected to the upper part of the planting mission case 5. In addition, the seedling supply section 7 and the left and right seedling mounts 31 and 31 are supported on the front and rear halfway parts, and the lift lever 32, the main clutch lever 33, the work lever, the accelerator lever, the side clutch lever, the height adjustment lever, etc. The operation lever is arranged.

  The handle frame 6 is composed of a right frame 6R, a middle frame 6M and a left frame 6L in a plan view “E” shape, and the planting mission case 5 is supported and fixed between the front portions of the right frame 6R and the middle frame 6M. A connecting plate 34 is installed between the sections, and the rear end upper portion of the right rear frame 2 b is fixed to the lower surface of the connecting plate 34. In this way, the three members are connected and fixed to each other to increase the rigidity. A drive case for the seedling supply unit 7 is attached to the lower part of the connection plate 34.

In addition, a reinforcing pipe 6a is connected between the front and rear middle portions of the middle frame 6M and the left frame 6L, and the upper end of the middle pillar 2e is connected and fixed to the front lower surface of the left frame 6L. In this way, the rigidity is improved by connecting and fixing the right frame 6R, the middle frame 6M, and the left frame 6L.
A seedling stage frame 35 is projected outward from the middle part of the right frame 6R to attach the seedling stage 31, and a seedling stage frame 36 is projected outward from the left frame 6L. 31 is attached.

  In this embodiment, the main worker 23 is positioned behind the rear wheel 17 on the right side of the handle frame 6 on the right side of the machine body (the diagonally right rear of the seedling supply unit 7), and behind the rear wheel 17 on the side of the handle frame 6 on the left side of the machine body. The auxiliary worker 24 is located (left obliquely behind the seedling supply unit 7), or in the case of single work, only the right side of the machine body is located, and the main worker 23 operates the operation lever, and from the seedling mount 31 The seedlings 26 are taken, and seedlings are inserted one by one (or a predetermined number) into each seedling transport pot 40 of the seedling supply unit 7. The auxiliary operator 24 inserts the seedling into the seedling transport pot 40 that the main worker 23 could not insert into the seedling transport pot 40 to supplement the auxiliary seeder.

  The traveling mission case 4 and the planting mission case 5 are arranged side by side in front of the center of the machine body in the vertical direction, and a connecting plate 30 is attached to the left and right sides of the traveling mission case 4 and the planting mission case 5. It is set as an integral structure as a structure which connects both cases. As described above, the traveling mission case 4 is fixed on the rear portion of the front frame 2a, and the upper portion of the planting mission case 5 is fixed on the upper portion of the rear frame 2b via the handle frame 6. Thus, in the side view, by connecting and fixing the upper part of the concave portion of the body frame 2 that is bent in an inverted “h” shape by the traveling mission case 4, the planting mission case 5, and the connection plate 30, The triangle can be formed in a side view and the rigidity is increased.

Next, the seedling supply unit 7 will be described with reference to FIGS. 2, 5, 6, and 7.
As shown in FIG. 2, a U-shaped support frame 37 in a plan view is projected from the middle of the left frame 6L toward the auxiliary worker 24 (on the opposite side to the center of the machine body) in the horizontal direction. A seedling carrier 39 having a plate body formed in an oval shape (long ring shape) is fixed substantially horizontally on the middle part of the handle frame 6.

  2 and 5, the drive sprocket 41 is disposed on the connecting plate 34 and the driven sprocket 42 is rotatably supported on the support frame 37. The drive sprocket 41 and the driven sprocket 42 are connected to the drive sprocket 41 and the driven sprocket 42, respectively. 40 seedling transport pots 40 as a seedling transport body connected in a chain shape are wound. Power is transmitted to the drive sprocket 41 from the planting mission case 5 through a transmission mechanism such as a chain. In this way, the seedling supply unit 7 is configured.

  Thus, the seedling carrier 39 is extended to the side of the wheel (front wheel 12 / rear wheel 17) deviated from the center of the machine body, so that the seedling supply unit 7 is arranged so as to straddle the heel 25, so In this case, the planting width of the four strips is straddled, and both the main worker 23 and the auxiliary work 24 located on both sides of the heel 25 face the seedling supply unit 7 and take seedlings from the seedling mount 31 to transfer seedlings. 40 so that seedlings can be supplied. And the drive sprocket 41 is arrange | positioned in the driving | running | working part side in which the main worker 23 is located, and the seedling supply part 7 is driven, the drive transmission path | route from the planting mission case 5 is short, and a transmission mechanism can be comprised compactly. I am doing so. In addition, by forming the 40 seedling transport pots into an oval shape, it is possible to form a straight part in the left and right direction (or an arcuate substantially straight part) in the front and back direction, and insert the seedling by increasing the transport distance in the left and right direction. In order to increase the transplanting efficiency, the time for transplanting can be increased so that the seedling can be supplied for a long time so that there is no omission of insertion. In addition, although seedling conveyance is made into an oval in a present Example, at least a linear part should just exist in the seedling supply part 7 and the succession part 50 mentioned later, and it may comprise a triangular shape or a rectangular shape or a polygonal shape. Is also possible.

  As shown in FIGS. 6 and 7, the seedling transport pot 40 is formed in a funnel shape in which the upper part of the cylindrical body is expanded, and has a shape in which a seedling can be easily inserted from above. A connecting plate 43 extends in the diameter direction and is fixed in the horizontal direction on the outer periphery of the lower portion of the seedling transport pot 40, and the connecting plate 43 and the pivot pin of the seedling transport pot 40 where the ends of the connecting plates 43 are adjacent to each other. 44 are pivotably connected to each other, and are connected by a seedling transport pot 40, a connecting plate 43, and a pivot pin 44 to form an endless body, and a simple structure without a chain or the like is required. In this embodiment, the outer peripheral surfaces of the drive sprocket 41 and the driven sprocket 42 are in contact with the side surfaces of the seedling transport pot 40 in the middle of the upper and lower sides. The seedlings are reversed and conveyed to the succession unit 50 side. Note that a plurality of upper and lower drive sprockets 41 and two driven sprockets 42 (two in this embodiment) are arranged so that they can be stably conveyed by abutting against the midway portion of the seedling transport pot 40.

  One side of a plate-like lid 45 is pivotally supported by a fulcrum pin 46 on the lower part of one side of the connecting plate 43 (preferably in the front part in the carrying direction), and the seedling carrying pot on the upper surface of the other side of the lid 45 The lower surface of 40 is covered. In other words, it is a shutter. A roller 47 is rotatably supported on one side of the lower surface of the other side of the lid 45 so as to roll on the seedling transport table 39. The roller 47 is attached to each seedling transport pot 40, and the rollers 47 are alternately arranged on the left and right in the transport direction. That is, in one seedling supply unit 7, when the number of seedling transport pots 40, 40,... Connected in large numbers is an even number, and numbered in order, the seedling transport pot 40 located at an odd number and the seedlings located at an even number In the transport pot, rollers 47, 47,... Are arranged alternately on the left and right sides with respect to the transport direction. In other words, the odd (or even) rollers 47 are arranged on the inner peripheral side, and the even (or odd) rollers 47 are arranged on the outer peripheral side.

  The seedling transport table 39 serves as a rail on which the roller 47 rolls. In the path along which the roller 47 of the seedling transport table 39 rolls, the seedling transport table 39, that is, the seedling transport table above the machine body. Openings (or notches) 39a and 39b are arranged side by side on the front side of 39 so that the front and rear positions are shifted from each other, and there is no support for the rollers 47 at the openings 39a and 39b. The body 45 is rotated downward to open the lower part of the seedling transport pot 40 so that the seedling is dropped onto the transplanting unit 20.

That is, the openings 39a and 39b are opened along the transport direction in the moving locus of the seedling transport pot 40 on the right side of the front part of the oval seedling transport base 39 that is long in the left-right direction. It is larger than the bottom area of the pot 40 so that the seedling can be dropped, and is opened at a position 3 or 5 pitch apart from the connected seedling transport pot 40 in the transport direction, and this interval is the width of the strip. (Strip interval). Then, one side is set to the left and right sides with respect to the traveling direction, and the other side is set to a large side so that the rollers 47 fall on the left and right sides. The seedlings fall to the extent that they are slightly expanded from the bottom surface (the lid body 45 can be rotated downward), but the rollers 47 attached to the seedling transport pots 40 adjacent to the front and rear in the traveling direction are prevented from falling. That is, the openings 39a and 39b are opened to the left and right opposite sides with respect to the center line in the transport direction of the seedling transport pot 40.
Slopes (inclined surfaces) 39c and 39c that gradually rise and are connected to the roller 47 rolling surface of the seedling carrier stand 39 at positions where the rollers 47 on the end side in the traveling direction pass through the openings 39a and 39b, respectively. The lid 45 is gradually closed as the roller 47 is moved without being caught.

As shown in FIG. 5, the moving path of the seedling transport pot 40 series is an ellipse, and two lines of moving paths are formed between the sprockets 41 and 42. The two rows of moving paths are linear paths in which the seedling transport pot 40 and the sprockets 41 and 42 are disengaged.
Of the two rows of movement paths, the movement path on the front side in the direction of travel of the airframe, which is the rear side in the rotational direction of the drive sprocket 41, is the tension side of the 40 seedling transport pots. On the other hand, the movement path on the rear side in the machine traveling direction which is the front side in the rotational direction of the drive sprocket 41 is the loose side of the 40 seedling transport pots.
The front movement path is a path from the driven sprocket 42 to the drive sprocket 41 in the movement direction of the seedling transport pot 40, and is a part that is pulled by the rotational drive of the drive sprocket 41. Therefore, the 40 seedling transport pots located at this site are in a “strained” state. The rear movement path is a path from the driven sprocket 42 to the drive sprocket 41 in the movement direction of the seedling transport pot 40, and is a portion that is pushed out by the rotational drive of the drive sprocket 41. Accordingly, the looseness of the entire seedling transport pot 40 series is concentrated in the seedling transport pot 40 series located at this portion, and the seedling transport pot 40 series located in the rear movement path is in a “loose” state. In addition, since the seedling transport pots 40 connected to the sprockets 41 and 42 are positioned by the sprockets 41 and 42, they are not in a “tensioned” state or a “loose” state.

The opening 39a provided in the inheritance part 50 is provided below the moving path on the front side serving as the tension side. The opening 39 a is a seedling dropping position for supplying seedlings from the seedling transport pot 40 to the transplanting claws 51.
The seedling transport pot 40 that is moving along the moving path in the “tensioned” state moves completely in conjunction with the drive sprocket 41. Therefore, the movement timing of the transplanting claw 51 for receiving the seedling to the succession portion 50 (top dead center position) and the movement timing of the seedling transport pot 40 to the seedling dropping position (above the opening 39a) can be matched. .
On the contrary, the seedling transport pot 40 that is moving along the movement path in the “loose” state does not specify the amount of looseness of each seedling transport pot 40 (the amount of pushing to the left and right with respect to the moving direction). Are not completely linked. That is, a deviation may occur between the both movement timings.

  As described above, by providing a seedling dropping position for supplying seedlings to the transplanting claws 51 below the moving path on the tension side, the seedlings are reliably delivered from the seedling supply unit 7 to the transplanting claws 51. be able to. For this reason, the planting mistake by poor inheritance does not occur.

Another opening 39b provided in the transfer part 50 is a part of the path where the seedling transport pot 40 is held in contact with the drive sprocket 41 on the moving path of the seedling transport pot 40, that is, a semicircular path. It is provided below. The opening 39 a is also a seedling dropping position for supplying the seedling from the seedling transport pot 40 to the transplanting claw 51.
In a state where the seedling transport pot 40 is in contact with the drive sprocket 41, the seedling transport pot 40 is positioned, and the seedling transport pot 40 is not displaced from the drive sprocket 41. For this reason, the seedling transport pot 40 located at the site moves in fully interlocked with the drive sprocket 41. Therefore, as described above, the movement timing of the transplanting claw 51 that receives the seedling to the succession part 50 (top dead center position) and the movement timing of the seedling transport pot 40 to the seedling dropping position (above the opening 39a) Can be matched.

  As described above, the transplanting claw 51 is provided from the seedling supply unit 7 by providing the seedling dropping position for supplying the seedling to the transplanting claw 51 below the portion where the seedling transport pot 40 is held in contact with the drive sprocket 41. It is possible to reliably deliver seedlings. For this reason, the planting mistake by poor inheritance does not occur.

  Note that the same effect as described above can be obtained even if a seedling dropping position for supplying the seedling to the transplanting claw 51 is provided below the portion where the seedling transport pot 40 is held in contact with the driven sprocket 42. . However, it is preferable to provide the seedling drop position at the lower position on the drive sprocket 41 side in order to match the movement timing of the transplanting claw 51 and the seedling transport pot 40. The driven sprocket 42 is configured to be driven by the drive sprocket 41 through the 40 seedling transport pots 40 on the front moving path which is the tension side. This is because the rotational drive timing is shifted from the drive sprocket 41 by the amount.

  In this way, the seedling supply section 7 is arranged in an oval shape so that the seedling transport pots 40, 40,... Are arranged in order, and sequentially pass before the main worker 23 and the auxiliary worker 24 at the rear of the machine body are located. At the time of passing, the seedling 26 is inserted into the seedling transport pot 40, and is rotated and moved upward where the transplant part 20 in front thereof is located. At the upper position of the transplanted portion 20, the rollers 47 and 47 separated by 3 pitches simultaneously fall into the openings 39a and 39b, and the lids 45 and 45 are pivoted downward to open the seedlings to drop the seedling. It is designed to be put into the transplanting nails 51 and 51. The part to be dropped is referred to as a transfer part 50. That is, the inheritance part 50 is located on the drive side of the seedling supply part 7 where the drive sprocket 41 is located, and can be brought close to the transplant part 20 by being located on the machine body side, so that the inheritance is good. Then, the rollers 47 and 47 come into contact with the slopes 39c and 39c and gradually rise to close the lids 45 and 45. Therefore, every other transplanted nail 51 is supplied from the seedling transport pot 40. That is, the lower seedling transport pot 40 is opened on the left (or right) of the left and right openings, and the even seedling transport pot 40 is opened on the right (or left) of the opening 45 on the lower side. In this case, the left and right strips (rows 1 and 2 or strips 3 and 4) will fall into the transplanted claws 51 and 51. Therefore, it becomes possible to plant two strips at the same time, and the distance between the left and right strips can be kept constant.

Next, the transplant part 20 will be described with reference to FIGS.
A transplant section 20 is disposed behind the planting mission case 5 in the center of the airframe between the rear frames 2b and 2b. The transplant section 20 is disposed on one side of the left and right sides, and a rotary case 52 serving as a drive section, From the left and right transplanting claws 51 and 51 which are located in the central portion and transported from the inheritance unit 50 to the heel 25, the lifting guide 53 which is arranged on the left and right other side to be a guide unit, and the arm or link which connects these It is configured. The rotary case 52 and the raising / lowering guide 53 are fixed to the left and right body frame 2, and transplantation claws 51, 51 are disposed between the rotary case 52 and the raising / lowering guide 53. Is configured to do.

  One end of the rotary case 52 is rotatably supported by a fulcrum shaft 54 projecting from the body frame 2 in the horizontal direction, and a sprocket 55 serving as a transmission is fixed to the outer periphery of the fulcrum shaft 54 on the outer side surface of the rotary case 52. It is configured to be interlocked with the planting mission case 5 through a transmission means such as a chain so that the transplanting unit 20 and the seedling supply unit 7 are driven in synchronization. In addition, it can also be set as the structure transmitted with a gear etc. instead of the sprocket 55, and is not limited.

Three gears are arranged in series in the rotary case 52 and meshed with each other, and the output shaft 56 projects from the other side of the rotary case 52 to the opposite side of the sprocket 55. One end of an arm 57 is fixed on the output shaft 56. Thus, the gear is set so that the rotary case 52 rotates once and the arm 57 rotates once in the opposite direction.
One end of a connecting shaft 59 is fixed to the other end of the arm 57, and one side (front side) of the graft claw supports 60, 60 is rotatably supported on the connecting shaft 59 via a bearing. ing. A connecting auxiliary shaft 62 is connected between the front and rear intermediate portions of the transplanting claw supports 60 and 60 to increase rigidity. The transplanting claw support 60 is composed of left and right plates, and an open / close cam 61 is fixed on a connecting shaft 59 between the left and right plates.

A funnel-shaped cup 60a is formed on the other side (rear side) of the transplant nail support 60 so that seedlings can easily enter from the inheriting portion 50, and the transplant nail 51 is disposed at the bottom of the cup 60a so as to be opened and closed. Yes.
The opening / closing mechanism of the transplanting claw 51 is provided with claw fulcrum shafts 63, 63 in the horizontal direction at positions spaced the same distance from the front and rear portions of the cup 60a. Is pivotally supported. The transplanted claw 51 accommodates and supports the seedling in a state where the beak-shaped claw portions 51a and 51a configured substantially symmetrically in the front and rear are combined, and the seedling is dropped in the opened state. The pivot shafts 64 and 64 are provided on the left and right sides of the upper cup 60a to connect the front and rear claw portions 51a and 51a. Then, springs 69 and 69 are interposed between the pivot shafts 64 and 64 and the upper portion of the cup 60a, and the pivot shafts 64 and 64 are lifted to urge the graft claw 51 to close. Yes.

  Further, one end of a contact arm 65 is pivotally supported on the claw fulcrum shaft 63 of the claw portion 51a located on the opening / closing cam 61 side, and a roller 66 is provided on the other end of the contact arm 65 so that the opening / closing cam 61 It is configured to contact the outer periphery. A claw opening / closing amount adjusting mechanism 67 is provided between the abutment arm 65 and the upper portion of the claw portion 51a. The claw opening / closing amount adjusting mechanism 67 is screwed between the two to rotate the bolt 68. By moving, the distance between the two is adjusted so that the amount of rotation of the claw portion 51a can be adjusted.

  That is, the claw portion 51a is urged to be closed by the spring 69, and the tip of the abutment arm 65 located on the opposite side to the fulcrum shaft 63 is abutted against the opening / closing cam 61 to restrict the rotation. . That is, the nail | claw part 51a rotates by the outer periphery shape of the opening-and-closing cam 61, and the transplanting claw 51 will be opened and closed. With this configuration, the transplanting claw 51 is always urged in the closing direction and is controlled to be forcibly opened by the opening / closing cam 61. Therefore, the configuration in which the transplantation claw is locked at the open position can provide sufficient opening. In some cases, the seedling cannot be dropped without being locked unless it is configured. However, by configuring as in this embodiment, the seedling can be reliably opened and dropped.

  And the front part of the graft nail support body 60 located on the opposite side of the rotary case 52 is extended upward to form an extension part 60b, and the support shaft 70 is connected to the lifting guide 53 side from the extension part 60b. The roller 71 is provided at the end of the support shaft 70 and is fitted into an elevating guide 53 arranged in the vertical direction to guide the elevating and lowering of the transplanting claw 51.

In such a configuration, when the transplanting claw 51 is positioned at the rising end, the claw portions 51a and 51a are closed, and when seedlings are introduced from the seedling supply unit 7 in the inheritance unit 50, the power from the planting mission case 5 is used. The rotary case 52 is rotated and the arm 57 is also rotated at the same time, so that the pair of left and right transplanting claws 51 and 51 are simultaneously lowered along the lifting guide 53, and the planting claws 51 are lowered while drawing a substantially elliptical locus. .
When the lower end position is lowered, the opening / closing cam 61 rotates to rotate the contact arm 65 in contact with the opening / closing cam 61 (contacts the small diameter portion of the opening / closing cam 61). The nail | claw part 51a is rotated centering | focusing on 63, the transplant nail | claw 51 * 51 is opened, and a seedling falls and discharge | releases in the lower end position on the collar 25. When further rotated, the transplanting claws 51 and 51 are raised, and the pair of left and right transplanting claws 51 and 51 are simultaneously closed by the rotation of the opening and closing cam 61 in the raised position.

Next, the support structure of the earth covering ring 22 will be described with reference to FIGS.
Stays 72 and 72 project downward from the lower surfaces of the left and right rear frames 2b and 2b, and the front ends of the pressure-reducing wheel frames 73 are pivotally supported by fulcrum shafts 80 as the pivots. . A lock part 89 described later is provided in the vicinity of the pivotal support part. The pressure-reducing wheel frame 73 is formed in a U shape in a plan view, a handle 74 projects rearward from the rear end portion, a support stay 75 projects from the left and right central portions, and a mounting frame 76 is suspended downward. Yes.

  A pivot shaft 90 protrudes from the lower end of the mounting stay 76 in the front-rear direction, and a lower portion of the pressure-reducing wheel support frame 91 is pivoted on the pivot shaft 90. The pressure-reducing wheel support frame 91 is configured in a lateral “E” shape in the rear view, and pivotally supports the pivot shaft 90 at the lower part of the central frame, and suppresses pressure between the left and right frames and the lower part of the central frame. The wheels 22, 22, 22, 22 are arranged so as to be rotatable in pairs on the left and right. The pair of pressure-reducing wheels 22 and 22 are configured to straddle the line in the traveling direction of the transplanting claws 51 and 51. In this way, the pivot shaft 90 is arranged at the left and right center lower portions to support the left and right pressure-reducing wheels 22, 22... The structure is such that both sides of the root of the seedling 26 are pressed.

A pivot shaft 77 is provided on the upper portion of the support stay 75 in the left-right direction. One side of a guide rod 78 serving as an extending member is slidably inserted into the pivot shaft 77, and guides on both sides of the pivot shaft 77 are provided. On the collar 78, springs 79a and 79b serving as biasing members are fitted. The other end of the guide rod 78 is rotatably supported by a fulcrum shaft 81 at the rear portion of the handle frame 6 (the middle frame 6M).
With this configuration, the pressure-reducing wheel 22 is urged so as to be pressed downward by the urging force of the spring 79b. When the pressure wheel 22 is lifted by holding the handle 74 at the end of the work or turning, the dead center is exceeded when the pivot shaft 77 is positioned above the line connecting the fulcrum shafts 80 and 81. The pressure wheel 22 can be maintained in the raised position.

  Next, the structure of the lock part 89 for locking the pressure-reducing wheel 22 to the raised position will be described. A lock part 89 is provided in the vicinity of the pivotal support part. The lock portion 89 pivotally supports one end of a lock arm 94 by a pivot shaft 93 on the rotation base portion side of the pressure-reducing wheel frame 73, and on the other side of the lock arm 94 in the longitudinal direction and above (with respect to the fulcrum shaft 80). L-shaped elongated holes 94a extending in the radial direction are formed, and on the other hand, the locking pin 95 protrudes above the stay 72 of the body frame 2 (rear frame 2b), and the locking pin 95 is The long hole 94a is inserted.

  Furthermore, one end of a wire 96 and a spring 97 is connected to the other end (upper end) of the lock arm 94, and the other end of the spring 97 is connected to the front rear frame 2b so that the lock arm 94 is rotated forward. The other end of the wire 96 is connected to an arm 99 provided on the rotating base of the lift lever 32. The lift lever 32 is further connected to a hydraulic operation lever provided in the vicinity of the engine 3 via a wire (not shown), and the hydraulic cylinder 19 is operated by the operation of the lift lever 32 so that the airframe can be raised and lowered.

In such a configuration, when the handle 74 is lifted to raise the pressure-reducing wheel 22, the lock arm 94 is also lifted, the locking pin 95 is lowered along the elongated hole 94a, and the pressure-reducing wheel 22 is in the raised position as described above. When reaching the position maintained at the raised position by exceeding the dead point, the locking pin 95 enters the vertical portion 94b of the long hole 94a, and the lock arm 94 is urged downward by the pulling force of the spring 97, Even if the locking pin 95 is maintained in the vertical portion 94b of the long hole 94a and the pressure reducing wheel 22 tries to rotate downward due to its own weight or the like, the locking pin 95 is engaged with the vertical portion 94b and cannot be rotated. The wheel 22 is locked in the raised position.
When the lifting lever 32 is rotated forward so that the machine body is lowered when starting the work or when the work is resumed after turning, the wire 96 is pulled and the lock arm 94 is rotated backward. By the movement, the inner surface of the long hole 94a pushes the locking pin 95 downward to push the pressure-reducing wheel frame 73 downward, and passes the portion beyond the dead center to lower the pressure-reducing wheel 22. That is, the pressure reducing wheel 22 can be lowered in conjunction with the lowering operation of the elevating lever 32. In this way, the pressure-reducing wheel 22 is simultaneously lowered by the lowering operation of the elevating lever 32 to improve the operability.
In this embodiment, two-row planting is used, but it is also possible to add four pairs of transplanting claws and their driving mechanisms in the left-right direction to form four-row planting. Further, in the present embodiment, the traveling unit is eccentric to the right in the traveling direction, but it may be configured to be eccentric to the left.

Next, the vegetable transplanting machine of the 2nd Example from which the structure of a seedling supply part differs is demonstrated.
In the second embodiment, only the configuration of the seedling supply unit is different from that of the first embodiment, and the other points are the same. Therefore, in the following description, the same reference numerals are used for the same parts in both embodiments, and the description of the parts is omitted.

The seedling supply unit 107 provided in the vegetable transplanting machine of the second embodiment will be described with reference to FIGS.
As shown in FIG. 14, the support portion of the drive sprocket 141 is constituted by a connecting plate 134 that connects the right frame 6R and the middle frame 6M. A drive case (not shown) is fixed to the connection plate 134, a drive shaft 182 is extended above the drive case, and a drive sprocket 141 is fixed to the drive shaft 182.
On the other hand, the support portion of the driven sprocket 142 includes a support frame 137 that is supported by the middle frame 6M and the left frame 6L and protrudes laterally, and an attachment frame 262 that is disposed on the support frame 137. A support shaft 282 extending upward is pivoted on the mounting frame 262, and a driven sprocket 142 is fixedly provided on the support shaft 282.
A series of pot attachment bases 140 connected endlessly are wound around the drive sprocket 141 and the driven sprocket 142. Each pot mounting base 140 holds a seedling insertion pot 148 into which one seedling is inserted. Power is transmitted to the drive sprocket 141 from the transmission case 104 via a transmission mechanism such as a chain. In this way, the seedling supply unit 107 is configured.

  In the above, the pot attachment base 140 is a connecting body that connects the respective parts to form an oval shape. Moreover, the pot attachment base 140 and the seedling insertion pot 148 which are connected bodies constitute a seedling transport body as seedling transporting means. As will be described later, the seedling insertion pot 148 is detachable from the pot mounting base 140 (connector).

The drive sprocket 141 and the driven sprocket 142 are formed of metal, particularly aluminum. The sprockets 141 and 142 are formed with a large number of hollow portions 141a and 142a around the rotation center of the sprockets 141 and 142, respectively.
The sprockets 141 and 142 are reduced in weight by the formation of the hollow portions 141a and 142a, and the rigidity is maintained by being made of metal (aluminum). Moreover, since both the sprockets 141 and 142 are made of aluminum, molding is easy.

On the outer circumferences of both sprockets 141 and 142, contact portions 141c and 142c are formed between the teeth of the sprockets 141 and 142 and the fitting ring 158 of the pot mounting base 140 (connector). Has been. The contact portions 141 c and 142 c are formed in an arc shape so as to engage with the fitting ring 158.
In this embodiment, the number of contact portions 141c and 142c formed by the sprockets 141 and 142 is 16, respectively. Therefore, 8 to 9 pot mounting bases 140 are positioned at one end of the arcuate shape of the elliptical pot mounting bases 140 regardless of the rotational positions of the sprockets 141 and 142. .

  Then, the main worker 123 walks behind the right rear wheel 117 and supplies the seedling 126 to the pot mounting base 140 from the right end of the oval pot mounting base 140 series. In addition, the auxiliary worker 124 walks behind the left rear wheel 117 and supplies the seedling 126 to the pot mounting base 140 from the right and left ends of the oval pot mounting base 140 series.

The arc-shaped end portion of the pot attachment base 140 is a seedling supply position by the workers 123 and 124. The seedling supply positions on both sides are respectively located in the vicinity of the seedling mounts 131 and 131 located on the left and right. Therefore, each of the workers 123 and 124 can supply seedlings from the seedling mount 131 to the seedling insertion pot 148 at the seedling supply position by reciprocating movement of one hand.
As described above, the more pot mounting bases 140 that are always located at the seedling supply position, the more the workers 123 and 124 can reliably supply seedlings to the seedling insertion pot 148, and It is also possible to reliably supply seedlings only by workers. That is, it is possible to supply seedlings in double row planting by one worker.
By forming five or more contact portions 141c and 142c with respect to the fitting ring 158 on the sprockets 141 and 142, respectively, compared to the case where cross-shaped drive wheels (sprockets) having four contact portions are used. Since there are a large number of seedling insertion pots 148 that move along the arcuate portion, opportunities for inserting seedlings can be increased and the seedling supply can be reliably performed at the same conveyance speed.

The pot mounting base 140 (connector) will be described with reference to FIGS. 15 and 16.
The pot mounting base 140 includes a fitting ring 158 that allows the seedling insertion pot 148 to be detachable, a first connecting portion 143a formed on both sides of the fitting ring 158, and second extending portions 143b and 143b. . The fitting ring 158 is a cylindrical body that is open at the top and bottom. Moreover, the pot attachment base 140 which is a connection body is connected endlessly as follows.
The first connecting portion 143 a and the second connecting portions 143 b and 143 b extending in the horizontal plane are projected from the outer peripheral surface of the fitting ring 158. In addition, the second connecting portions 143b and 143b are in a positional relationship located above and below the first extending portion 143a, respectively. Between the adjacent pot mounting bases 140 and 140, the first connecting portion 143a of one pot mounting base 140 and the second connecting portions 143b and 143b of the other pot mounting base 140 overlap in plan view. The first connecting portion 143a and the second connecting portions 143b and 143b are pivotally connected to each other by inserting the pivot pin 144 from above, and the pot mounting base portions 140 and 140 are connected.
As described above, the pot mounting base 140 is configured, and the pot mounting bases 140, 140,... Are connected endlessly in a swingable manner to form an endless body, and a simple structure without a chain or the like is required. .

  Then, in this embodiment, the driving sprocket 141 and the outer peripheral surface of the driven sprocket 142 are in contact with the side surfaces of the upper and lower middle portions of the pot mounting base 140, and in this embodiment, the pot sprocket rotates clockwise in plan view. So that the seedlings are conveyed to the successor 150 side. The drive sprocket 141 and the driven sprocket 142 are configured so that a plurality of recesses formed on the outer peripheral surface abut against the upper and lower middle portions of the pot mounting base 140 and can be stably conveyed.

As shown in FIGS. 17 (a) and 17 (b), the seedling insertion pot 148 has a shape in which the upper part of the cylindrical body is expanded, and has a shape in which a seedling can be easily inserted from above. FIG. 17A is a side sectional view of the seedling insertion pot 148, and FIG. 17B is a bottom view of the same.
In the seedling insertion direction, the inner diameter decreases from the pot upper end on the inlet side toward the pot lower end on the outlet side. Then, the insertion of the seedling into the seedling insertion pot 148 is facilitated, and the falling direction of the seedling from the seedling insertion pot 148 is limited so that the seedling is delivered to the transplanting claw 151 with certainty. Yes.
The upper portion of the seedling insertion pot 148 is formed in a stepped manner so that a plurality of cylinders with gradually increasing diameters are connected upward from below. On the inner surface 148d of the seedling insertion pot 148, the upper end portion of each cylinder is a convex portion 148b on the inner surface 148d. The lower end of each cylinder is a recess 148c on the inner surface 148d. In other words, the inner surface 148d of the seedling insertion pot 148 is made uneven so as to limit the area where the seedling contacts the inner surface of the seedling insertion pot.
The seedling insertion pot 148 is made of resin, and is plastically formed so that at least a part of the inner surface of the seedling insertion pot is stepped. A step may be formed entirely on the inner surface of the seedling insertion pot, and the shape of the outer surface is not questioned.

With the above configuration, even when moisture is attached to the seedling, a problem that the seedling sticks to the inner surface of the seedling insertion pot is prevented, and the transplanting claw 151 (the transplanting part 120) due to dropping from the seedling insertion pot is prevented. The delivery of seedlings to) will be ensured. As a preliminary preparation at the time of transplanting the seedling, the seedling may be immersed in a chemical solution or a disinfecting solution, but there is no problem in delivery to the transplanting nail 151 even in a state where moisture is attached. Immediately without having to wait for the seedlings to dry, they can move on to transplanting. Further, even if rain occurs after the planting operation is started, it is not necessary to interrupt the operation because the seedling may stick to the inner surface of the seedling insertion pot. Furthermore, even if water is imparted to the seedlings in order to increase the seedling viability at the start of the transplanting work without providing an irrigation mechanism in the vegetable transplanting machine, no problems occur. Furthermore, even if there is some rain and moisture adheres to the seedling, there is no need to interrupt the operation because of fear of delivery to the transplanting claw 151.
In addition, since the seedling insertion pot 148 is made of resin and a part of the inner surface is stepped by plastic forming, the seedling insertion pot 148 can be manufactured inexpensively and easily.

On the other hand, the fitting ring 158 of the pot mounting base 140 is formed so that the seedling insertion pot 148 can be inserted therein, and the outer peripheral surface of the seedling insertion pot 148 is substantially in contact with the inner peripheral surface of the fitting ring 158. It is held in the state. The position of the seedling insertion pot 148 relative to the fitting ring 158 in this state is set as the holding position of the seedling insertion pot 148.
With the above configuration, the seedling insertion pot 148 is configured to be detachable from the pot mounting base 140. Since the seedling insertion pot 148 for inserting the seedling and the pot mounting base 140 are separate, when the seedling insertion pot 148 is damaged, only the seedling insertion pot 148 needs to be replaced. improves. In addition, when a single row or a half-row is formed, it is definitely easy to plant a single row by removing every other, that is, by removing the odd-numbered or even-numbered pots 148 for inserting seedlings. Further, by configuring the odd-numbered or even-numbered seedling insertion pot 148 to have a different color from the others, it is possible to definitely insert and plant different types of seedlings for each line.
Further, as described above, the seedling insertion pot 148 is made of resin, the insertion portion to the lower pot attachment base portion 148 is formed in a semi-transparent glass shape, and the upper portion is a transparent body. On the other hand, the pot mounting base 140 is made of aluminum. For this reason, while the seedling insertion pot 148 is detachable from the pot mounting base 140, the seedling insertion pot 148 and the pot mounting base 140 are rubbed against each other due to vibration during traveling, and the mutual wear occurs. There will be no problems such as abnormal noise. Moreover, since the upper part is transparent, even when a short seedling is inserted, it can be easily determined whether or not there is an insertion error.

Further, the pot mounting base 140 and the seedling insertion pot 148 are provided with a structure for preventing the seedling insertion pot 148 from coming off, and are configured to be fitted to each other.
As shown in FIGS. 15 and 17 (a) and 17 (b), a protrusion 148a is provided on the outer peripheral surface of the seedling insertion pot 148, and the inner peripheral surface of the fitting ring 158 is in the holding position. A fitting hole 158a is formed at a position corresponding to the protrusion 148a. In the holding position, the protrusion 148a is fitted into the fitting hole 158a, and the pot mounting base 140 and the seedling insertion pot 148 are fitted. The fitting of the two members prevents the seedling insertion pot 148 from coming off from the pot mounting base 140. In particular, since the seedling insertion pot 148 is made of synthetic resin as described above, the seedling insertion pot 148 can be bent to engage / disengage the fitting hole 158a and the protrusion 148a. Is easy.

For this reason, the seedling insertion pot 148 does not fall off from the pot mounting base 140 due to vibration during traveling or wind pressure when the machine body is loaded and moved on a transport vehicle.
In this embodiment (second embodiment), a protrusion 148a is formed as a convex portion on the outer peripheral surface of the seedling insertion pot 148, and a fitting hole 158a is formed as a concave portion on the inner peripheral surface of the fitting ring 158. The seedling insertion pot 148 is prevented from coming off.
This configuration is not limited to this configuration, and any configuration may be used as long as a concave portion or a convex portion is formed on the inner peripheral surface of the fitting ring 158 and the outer peripheral surface of the seedling insertion pot 148, respectively. For example, as the concave portion, a recess may be formed instead of the fitting hole 158a which is a through hole. Moreover, it is good also as a structure which forms a convex part in the fitting ring 158, and forms a recessed part in the pot 148 for seedling insertion. Moreover, it is also possible to rotate and fix like a screw type.

As shown in FIG. 15 and FIG. 16, below the connecting portion (the first connecting portion 143a and the second connecting portion 143b / 143b) between the pot mounting base portions 140 and 140, as shown in FIGS. 145 support portions are provided.
The shutter 145 is a member formed by bending a plate-like member, and includes a flat surface portion 145a, a rotation support portion 145b formed on one side of the flat surface portion 145a, and a roller mounting portion formed on the other side. 145c.
The rotation support portion 145b is a portion formed by bending the plate-like member into a U shape in a sectional view on the front side in the transport direction of the shutter 145. The fulcrum pin 146 inserted into the rotation support part 145b is fixed in a horizontal direction to a shutter support part 143c projecting from the lower part of the outer peripheral surface of the pot attachment base part 140 so that the shutter 145 is fixed to the pot attachment base part 140. Locked up and down. In addition, the U-shaped configuration makes it easy to assemble and remove the rotation support portion 145b.
And it is set as the structure which covers the lower surface of the said seedling insertion pot 148 with the plane part 145a. Further, the pivot position (the fulcrum pin 146 and the rotation support portion 145b) of the shutter 145 is provided on the front side in the transport direction in the shutter 145 because of the opening / closing configuration of the shutter 145 described later.
The roller support portion 145c is a portion where the plate-like member is bent vertically downward with respect to the flat portion 145a so that the plate surface is parallel to the traveling direction on the left and right sides of the rear side of the shutter 145 in the conveyance direction. . A roller 147 is disposed on the roller support portion 145c. The roller 147 supports a support pin 149 in a horizontal direction perpendicular to the traveling direction, and is rotatably supported with respect to the shutter 145.

The shutter 145 is made of metal, and the roller support portion 145c and the flat portion 145a are each formed as a part of a metal integral molding member (shutter 145). The shutter 145 has an “L” shape when viewed from the conveying direction of the seedling insertion pot 148. The roller support portion 145c can be easily manufactured because it is configured to bend one end into an L shape.
Therefore, the rigidity of the shutter 145 is higher than that in the case where the mounting member of the roller 147 and the member that covers the lower surface of the seedling insertion pot 148 are configured separately and the two members are connected by a connecting method such as welding. Can keep. The shutter 145 (roller support portion 145c) is formed thick so that the shutter 145 can be smoothly rotated without attaching a weight. In the first embodiment, the shutter 45 is made thin, and the roller 47 is made of metal and plays the role of a weight.

  A roller 147 provided on the shutter 145 rolls on the seedling conveying table 139. The roller 147 is attached to each pot attachment base 140, but the rollers 147 are alternately arranged on the left and right in the transport direction. That is, in one seedling supply unit 107, the number of pot attachment bases 140, 140... Connected in large numbers is an even number, and when each is numbered in turn, the pot attachment base 140 located at an odd number and the pot located at an even number. In the mounting base 140, rollers 147, 147,... Are alternately arranged on the opposite left and right sides with respect to the transport direction. In other words, odd (or even) rollers 147 are arranged on the inner peripheral side, and even (or odd) rollers 147 are arranged on the outer peripheral side.

  Further, the roller 147 is formed of a synthetic resin and is made of a synthetic resin having a self-lubricating property so that smooth rotation can be obtained with a simple configuration. When the roller 147 rolls on the metal (aluminum) seedling carrier 39, it is possible to prevent mutual wear and noise.

The seedling carrier 139 serves as a rail on which the roller 147 rolls. By rolling, the friction is small and there is almost no wear compared to the configuration in which the shutter is in sliding contact, the power load is small, and the noise is also small. In the path along which the roller 147 of the seedling transport table 139 rolls, the openings (or notches) 139a and 139b are arranged in parallel on the front side of the seedling transport table 139 above the machine body with the left and right front and rear positions shifted. is doing. When there is no support for the roller 147 in the openings 139a and 139b and the shutter 145 rotates downward about the fulcrum pin 46, the lower part of the pot mounting base 140 is opened so that the seedlings fall to the transplant part 120. ing.
That is, the inheritance part 150 is a part that delivers seedlings from the seedling transporting base 139 to the transplanting part 120.

  That is, the openings 139a and 139b are opened along the transport direction in the movement locus part of the pot mounting base 140 on the front right side of the oval seedling transport base 139 that is long in the left-right direction, and the openings 139a and 139b are mounted on the pot. It is larger than the bottom area of the base 140 so that the seedling can be dropped, and the pot mounting base 140 connected to the transport direction is opened at a position 3 or 5 pitch apart, and this interval is the width of the strip. (Strip interval). Then, one side is set to the left and right sides with respect to the traveling direction, and the other side is set to a large side so that the rollers 147 fall on the left and right sides, and the side where the rollers 147 are not positioned is the side of the pot mounting base 140. The seedlings fall to a degree slightly wider than the bottom surface (the shutter 145 can rotate downward), but the rollers 147 attached to the pot mounting bases 140 adjacent to the front and rear in the traveling direction are prevented from falling. That is, the openings 139a and 139b are opened to the left and right opposite sides with respect to the center line in the conveyance direction of the pot mounting base 140.

Slopes (inclined surfaces) 139c and 139c that gradually rise and are connected to the roller 147 rolling surface of the seedling carrier stand 139 at positions where the rollers 147 on the end side in the traveling direction pass in the openings 139a and 139b, respectively. Is provided. The inclination directions of the slopes 139c and 139c are high and low before and after the conveyance direction, and the shutter 145 is gradually closed as the roller 147 is not caught.
The shutter 145 is opened / closed depending on the presence / absence of the seedling carrier stand 139 that is in contact with the roller 147 below the roller 147. In particular, when the shutter 145 is opened to closed, the roller 147 is guided by the slope 139c. Since the opening / closing configuration of the shutter 145 is as described above, when the shutter 145 is in contact with the slope 139c, the shutter 145 is always in the closing direction by setting the pivotal support position of the shutter 145 to the front side in the transport direction. To rotate.
When the pivot position of the shutter 145 is provided on the rear side in the conveyance direction, depending on the opening angle of the shutter 145 and the inclination angle of the slope 139c, the shutter 145 may be further rotated in the opening direction when contacting the slope 139c. Or the shutter 145 may resist the slope 139c.

  In this way, the seedling supply unit 107 is arranged in an oval shape with the pot mounting bases 140, 140... Passing through before the main worker 123 and the auxiliary worker 124 at the rear of the machine are located, At the time of passing, the seedling 126 is inserted into the seedling insertion pot 148, and is rotated and moved upward where the transplanted portion 120 is located. Rollers 147 and 147 separated by 3 pitches simultaneously fall into the openings 139a and 139b at the upper position of the transplanting part 120, and the shutters 145 and 145 are rotated downward to open and the seedlings are dropped to transplant the transplanting part 120. The claws 151 and 151 are inserted. The part to be dropped is referred to as a transfer part 150. That is, the inheritance part 150 is located on the drive side of the seedling supply part 107 where the drive sprocket 141 is located, and can be brought closer to the transplant part 120 by being located on the machine body side, so that the inheritance is good. The rollers 147 and 147 come into contact with the slopes 139c and 139c and gradually rise to close the shutters 145 and 145. Accordingly, every other transplanting claw 151 is supplied from the pot mounting base 140. That is, the odd pot mounting base 140 is the left (or right) of the left and right openings, and the even pot mounting base 140 is the right (or left) opening of the lower shutter 145. The left and right strips (1 and 2 or 3 and 4) will fall on the transplanting claws 151 and 151. Therefore, it becomes possible to plant two strips at the same time, and the distance between the left and right strips can be kept constant.

As described above, the openings 139a and 139b are seedling dropping positions for supplying seedlings to the transplanting claws 151 from the seedling carrier (the pot mounting base 140 and the seedling insertion pot 148). Similarly, as described above, the arc-shaped end of the seedling carrier body, that is, the engaging portion between the pot mounting base 140 and the sprockets 141 and 142 is a seedling supply position by the workers 123 and 124. The opening 139a is located behind the opening 139b in the moving direction, and the opening 139a and the opening 139b are arranged in this order in the moving direction.
However, in the seedling supply position, it is not desirable to supply seedlings behind the opening 139b in the moving direction on the drive sprocket 141 side where the pair of seedling dropping positions are arranged. The opening widths of the openings 139a and 139b are equivalent to two of the pot mounting base 140 in the moving direction. When a seedling is inserted into the seedling insertion pot 148 immediately after the seedling is dropped, the seedling is moved to the shutter 145. It will fall without receiving the restraint. That is, a planting error occurs.

In order to prevent the above problems, a means for warning the start position of the seedling supply to the operator is provided so that the seedling is supplied behind the openings 139a and 139b in the moving direction of the seedling carrier. 107 is provided.
As shown in FIGS. 14 and 16, a supply instruction target member 295 is erected on the seedling carrier stand 139. The supply instruction target member 295 is means for warning the operator of the start position of seedling supply. The supply instruction target member 295 is disposed on the moving path of the seedling transport body and is positioned in front of the opening 139b in the moving direction of the seedling transporting body. As shown in FIG. 17, the supply instruction target member 295 is an inverted L-shaped member in rear view, and the upper end portion of the supply instruction target member 295 extends inward from the outside of the seedling carrier series. And overlaps the seedling carrier in plan view. That is, in plan view, a partition is provided on the moving path of the seedling carrier so that the start position of seedling supply is clarified.

  As described above, it is possible to warn the worker of the start position of seedling supply by standing the supply instruction target member to the seedling transport body on the front side in the moving direction of the seedling transport body of the openings 139a and 139b. it can. And the malfunction that a seedling falls other than a predetermined seedling fall position can be prevented, and generation | occurrence | production of a planting mistake can be prevented.

The drive sprocket 141 and the driven sprocket 142 are wound with the pot mounting base 140 series as a connecting body as described above. Both sprockets 141 and 142 that are rotatably supported on the support frame 137 are disposed on the left and right sides of the chassis.
Then, the fitting ring 158 of the pot mounting base 140 is disposed so as to contact both the sprockets 141 and 142. The teeth formed on the outer circumferences of the sprockets 141 and 142 are fitted between the fitting rings 158 and 158, and the outer circumference between the teeth is formed in an arc shape so as to smoothly contact the outer circumferential surface of the fitting ring 158. It is formed in the recess. The pot mounting base 140 series that comes into contact with and engages with both the sprockets 141 and 142 is driven by driving of the drive sprocket 141.

As shown in FIG. 19, the fulcrum pin 146 provided on the pot attachment base 140 and the driven sprocket 142 overlap in plan view. Similarly, the fulcrum pin 146 and the drive sprocket 141 overlap in plan view.
As shown in FIG. 17, the lower end surface 141 d of the drive sprocket 141 and the shutter support portion 145 b that is rotatably provided on the fulcrum pin 146 are substantially in contact with each other. The upward movement of the pot mounting base 140 is blocked by the drive sprocket 141 in a state where the contact portion 141c of the drive sprocket 141 is engaged with the outer periphery of the fitting ring 158. The configuration is similar between the driven sprocket 142 and the pot mounting base 140, so that the pot mounting base 140 series does not fall off the sprockets 141 and 142.

When the pot mounting base part 140 reaches the arcuate end of the elliptical moving path, it engages with either one of the sprockets 141 and 142. This is engagement by contact between the contact portion 141c and the outer periphery of the fitting ring 158. At the same time, the shutter support portion 145b enters the lower side of the lower end surface 141d and is brought into a substantially contact state.
At the time of transition to the contact state, the shutter support portion 145b is in contact with the outer end surfaces of both the sprockets 141 and 142 to generate an impact or prevent the trouble that the shutter support portion 145b cannot enter the lower side of the lower end surface 141d. Chamfering is formed on the outer periphery of the lower ends of both sprockets 141 and 142. A chamfer 141e is formed on the outer periphery of the lower end of the drive sprocket 141 (FIG. 17), and a chamfer 142e is formed on the outer periphery of the lower end of the driven sprocket 142 (FIG. 20).

Then, when the shutter support portion 145b enters the lower side of the lower end surface 141d, the lower sprockets 141 and 142 formed on the seedling carrier (shutter support portions 145b) and both the sprockets 141 and 142 are formed. The abutment impact with the lower end surface is reduced.
With the above configuration, when the outer end surfaces (contact portions 141c) of the sprockets 141 and 142 are engaged with the outer periphery of the seedling carrier (the outer periphery of the fitting ring 158), an impact occurs or the lower side of the lower end surface 141d Troubles that can not be entered are prevented.

The left and right position adjustment unit of the driven sprocket 142 will be described with reference to FIGS. 19 and 20.
The support frame 137 includes a pair of base frames 251 and 251 and a base frame 250 that bridges the base frames 251 and 251. The pair of base frames 251 and 251 support a left seedling transport base 249 provided on the left side of the seedling transport base 139.
On the base frames 251 and 251, a support base 262 of the driven sprocket 142 is placed. The driven sprocket 142 is fixed to a support shaft 282 pivoted on the support base 262 and is rotatable with respect to the support base 262. The support base 262 is formed in a drum shape in plan view, and both end portions are respectively positioned above the base frames 251 and 251, and a pair of guide grooves 262 a and 262 a are formed at both end portions, respectively.
The base frame 251 also has insertion holes 25a and 251a formed on the upper and lower walls of the base frame 251 that are square pipes at portions overlapping with the support 262 in plan view. Then, the guide bolt 263 is inserted into the guide groove 262a and the upper and lower insertion holes 251a and 251a, and the guide bolt 263 and the nut 264 are screwed together so that the support base 262 is slidable and cannot be removed from the base frame 251. It is installed.
That is, the base frame 251 and the support base 262 are not fastened and fixed by the guide bolt 263 and the nut 264. Therefore, the support base 262 can slide on the base frames 251 and 251 along the formation direction (left-right direction) of the guide grooves 262a, 262a. The guide groove 262a is formed in the left-right direction when the support base 262 is attached, and the support base 262 can slide in the left-right direction.

As shown in FIGS. 19 and 20, an adjustment bolt 265 is inserted into the bridge frame 250 located on the counter drive sprocket 141 side of the support base 262 from the inner side to the outer side. Insertion holes through which the adjustment bolts 265 are inserted are formed in the left and right walls of the bridge frame 250 that is a square pipe.
A spring 266 as an urging member is interposed between the bolt head 265a of the adjustment bolt 265 located inside the machine body and the support base 262. An attachment portion 262b extending downward is formed on the support base 262 on the bridge frame 250 side, and one end of the spring 266 is locked in an attachment hole formed in the attachment portion 262b.
A screw shaft 265b of the adjustment bolt 265 protrudes outside the body of the bridge frame 250, and a double nut comprising nuts 267 and 267 is screwed onto the protruded screw shaft 265b. The adjustment bolt 267 is urged toward the support base 262 by the spring 266, but the movement of the adjustment bolt 265 toward the support base 262 is stopped by fastening the nuts 267 and 267 on the screw shaft 265b.

The biasing force of the spring 266 acting between the adjusting bolt 266 and the driven sprocket 141 can be adjusted by adjusting the fastening position of the nuts 267 and 267 on the screw shaft 265b. As described above, the driven sprocket 141 is in contact with the pot mounting base 140 constituting the seedling carrier, and the left and right positions are substantially restricted.
Therefore, the tension applied by the driven sprocket 141 to the seedling carrier can be adjusted by adjusting the stop position of the adjustment bolt 266 to the bridge frame 150. And the drive of the pot attachment base part (connector) 140 series by the drive sprocket 141 can be made favorable.

It is the side view which showed the whole structure of the walking type vegetable transplanter which concerns on one Example of this invention. It is also a plan view. It is a side view of a body frame and a mission case part. It is a top view of a body frame part. It is a top view of a seedling supply part. It is a rear surface sectional view of a succession part. It is also a plan view. It is a rear view of a transplant part. It is a side view similarly. It is also a plan view. It is side surface sectional drawing of a transplant nail. It is a side view of a suppression wheel support part. It is a rear view of the suppression wheel part. It is a top view which shows the seedling supply part 107. FIG. FIG. 5 is a rear cross-sectional view showing a transfer part 150. It is also a plan view. It is a double view of the seedling insertion pot. It is a rear view which shows a supply instruction | indication target member. It is a top view which shows the left-right position adjustment part of the driven sprocket 142. FIG. It is a rear view which shows the left-right position adjustment part of the driven sprocket 142.

Explanation of symbols

2 Airframe Frame 7 Seedling Supply Section 25 ２６ 26 Seedling 40 Seedling Transport Pot 41 Drive Sprocket 42 Driven Sprocket 50 Transfer Part 51 Transplant Claw 61 Opening / Closing Cam 65 Contact Arm

Claims (1)

  In a vegetable transplanting machine, in which seedlings are put into the transplanting claws from the seedling supply unit provided on the machine frame, and the transplanted claws are moved onto the cocoon and transplanted, the seedling supply unit is driven left and right on the machine frame A sprocket and a driven sprocket are arranged, a seedling carrier into which seedlings are inserted is connected in a chain shape, wound between the sprockets, and a chamfer is formed on the outer periphery of the lower ends of both sprockets to form a seedling carrier. A vegetable transplanting machine configured to relieve an abutment impact between a sprocket lower projection and a lower end of a sprocket.

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