JPH09266712A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent slip of position of seedling on a seedling feed belt caused by vibration, etc., when a machine body rotates or moves at a high speed. SOLUTION: In this seedling transplanter using seedlings raised in nursery box arranging many pots for housing seedlings one by one both in length and width, a seedling feed belt 34a for placing seedlings taken out from the nursery box and conveying the seedlings to right and left directions and a seedling fixing tool 50 for fixing seedlings on the seedling feed belt 34a so as not to move by pressing the seedlings from above are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter for removing seedlings from pots in a seedling box in which a large number of pots for accommodating seedlings one by one are arranged vertically and horizontally and planting them in a field.

[0002]

2. Description of the Related Art Seedlings grown in the above-mentioned seedling box are loaded into a planting section together with the seedling box, and the seedling box is transported along a predetermined transport route, while seedlings are transferred from each pot of the seedling box during transport. Each horizontal row is taken out, and the taken horizontal rows of seedlings are conveyed downward and placed on the seedling feeding belt.The seedling feeding belt conveys the seedlings in the left and right direction to the seedling taking position of the seedling planting device. There is a seedling transplanter configured to supply seedlings one by one.

[0003]

Conventionally, since the seedlings on the seedling feeding belt are only placed on the belt, there is no problem when the rice transplanter is planting seedlings at a low speed. The position of the seedlings on the seedling feeding belt is displaced due to vibration when the aircraft is turning or moving at high speed, and there is a problem that the planting accuracy of the seedlings is deteriorated when the planting is restarted.

[0004]

In order to solve the above problems, the present invention has the following arrangement. That is, the seedling transplanter according to the present invention is a seedling transplanter that uses seedlings grown in a seedling box in which a large number of pots for storing one seedling are arranged vertically and horizontally, and the seedlings taken out from the seedling box are placed on the left and right sides. And a seedling fixing tool for fixing the seedling on the seedling feeding belt from above so as not to move when the seedling planting is stopped.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION In the seedling transplanting machine 1 shown in the drawings, a planting section 4 for 6-row planting is mounted on a rear side of a riding type traveling vehicle body 2 through a link device 3 so that it can be moved up and down. At the rear part of the vehicle body 2, a fertilizer hopper 5a of the side-row fertilizer applicator 5 and a fertilizer feeding device 5b for feeding fertilizer for each row are arranged.
The seedling transplanter 1 is for planting paddy rice seedlings in a paddy field, but the present invention is not limited to this, and is also applicable to a seedling transplanter for planting vegetable seedlings in a field.

The traveling vehicle body 2 comprises a pair of left and right steering front wheels 6, 6 which are driven and rotated, and a pair of left and right rear wheels 7, 7 which are driven and rotated.
The transmission case 9 is mounted on the front side of the frame 8 and the engine E is mounted on the rear side. The rotational power of the engine E is transmitted once by a belt transmission 10 to a hydraulic pump mounted on the upper part of the transmission case 9 and from there. The transmission is transmitted into the transmission case 9 by a belt transmission 11 capable of continuously variable transmission operation. And mission case 9
The power shifted by the transmission inside the front wheel
6 and the rear wheels 7, 7 and a transmission shaft 9a,
Power is transmitted to the planting section 4 via the intermediate gear case 9b and the transmission shaft 9c. In the figure, reference numeral 12 denotes a steering wheel for steering the front wheels 6, 6, reference numeral 13 denotes a seat on which the driver sits, and reference numeral 14 denotes a step floor for the driver to move on the running vehicle body.

The link device 3 includes a frame 8 of the traveling vehicle body 2.
The upper link 15a
The lower link 15a and the lower link 15b are rotatably mounted, and the vertical link 15c is connected to the rear ends of these upper and lower links. Then, a connecting shaft portion 16 ′ integral with the planting transmission case 16 in the center of the planting portion 4 is rotatably coupled to the coupling bearing portion 15c ′ projecting rearward from the lower end portion of the vertical link 15c, so that the planting portion The part 4 is mounted so as to be rotatable left and right with respect to the traveling direction. Further, a hydraulic cylinder 17 for driving the link device 3 is provided with the base side attached to the frame 8, and the piston rod side is connected to the upper link 1.
Arms 15a ', which are integrally fixed downward from the bases of 5a and 15a, are connected via a spring to the distal end. When the hydraulic cylinder 17 expands and contracts, the upper and lower links 15a, 15a, 15b, and 15b rotate around the support shaft on the link base 8a side, and the planting portion 4 moves up and down. The operation of the hydraulic cylinder 17 is controlled by a hydraulic valve 18 provided in the planting section 4.

Preliminary seedling mounts 20, 20 are provided on the left and right sides of the front part of the traveling vehicle body 2. Further, on the left and right sides of the front part of the traveling vehicle body 2, line-drawing markers 21 and 21 for delineating the course of the traveling vehicle body 2 in the next stroke to the field scene are provided so that they can be switched up and down.

[0009] The planting section 4 has a six-row planting configuration and is provided with two sets of two sets of seedling box transfer devices 30, 30, 30, first seedling removal devices 31, 31, 31 and first seedling transfer devices 32, 31. 32.3
2. Second seedling removal devices 33, 33, 33, second seedling transport devices 34, 34, 34, seedling planting device 3 provided for each strip
5 and so on. For this planting section 4, seedlings grown in a seedling box in which a large number of pots for storing one seedling are arranged vertically and horizontally are used.

A plurality of seedling boxes are loaded in the seedling box transporting device 30, and the seedlings are simultaneously pushed out from the pots in the horizontal row of the seedling boxes transported to the seedling pushing position P by the first seedling extracting device 31. . The extruded seedlings are held by the seedling holders 32a of the first seedling transporting device 32 ... And are transported along a locus which forms an arc toward the lower front side, and the second seedling extracting device 33 ... … Dropped on top. The removed seedlings are laterally fed to the seedling picking sections on the left and right sides of the seedlings by the second seedling feeding apparatus 34 ..., and the seedlings fed to the seedling picking section are planted one by one.・ 35 ... is taken and planted in the field.

A center float 36 is provided below the planting section 4.
And a pair of left and right side floats 37 are provided, and during planting work, these floats slide while leveling the field scene. Each of these floats 36, 37, 37
Are attached to the field scene near the seedling planting position of each line, and a U-shaped fertilizer guide 5c having a rear cross-section in plan view is provided on the rear side thereof. Are attached, and fertilizing hoses 5d for transferring the fertilizer fed from the fertilizer feeding device 5b are connected to each strip. The center float 36 is also a sensor for detecting unevenness in the field scene, and the spool of the hydraulic valve 18 is operated according to the vertical movement of the center float 36. That is, when the center float 36 moves upward, the hydraulic valve 1 is moved in the direction in which the hydraulic cylinder 17 is extended.
When the center float 36 is moved downward, the hydraulic valve 18 is operated in a direction to contract the hydraulic cylinder 17. Thus, the planting unit 4 is controlled so as to maintain a constant height with respect to the field scene.

Next, the structure of each part of the planting part 4 will be described. Three seedling box transfer devices 30 are provided at the center and left and right. Each seedling box transport device 30 is provided with two upper and lower stages of seedling box supply units 30a.
0a and a seedling box transporting path from the two-stage seedling box feeding section are joined and transported downward, and further, a main seedling box transporting section 30b which is curved upward in a U shape to the front side, and subsequently, the above. Empty box transport unit 3 extending upward to just below the seedling box supply unit 30a
0c, and an empty box storage frame 30d for storing a plurality of empty seedling boxes discharged from the empty box transport unit 30c in a vertically stacked state. In these seedling box carrying devices 30, the main seedling box carrying section 30b ...
The seedling box supply section support frame 3 supported on the upper side by 6 and further having a base fixed inside the U-shape of the main seedling box transfer section 30b.
0e ... with seedling box supply sections 30a, 30a ..., empty box transport section 30
c and the empty box housing frame 30d are supported.

The seedling boxes placed on the upper and lower two-stage seedling box feeding sections 30a, 30a slide down by their own weight and are fed one by one to the main seedling box conveying section 30b. The left and right transportation guide portions 30b 'near the seedling pushing position P of the main seedling feeding unit 30b lock the seedling feeding box at the seedling pushing position P and feed the seedling feeding boxes one row at a time at the appropriate timing. A device 40 is provided. The seedling box feeding device 40 includes a pair of left and right feed claws 40a and 40a that reciprocate along a seedling box transport path, and locking claws 40b and 40b that are engaged and disengaged in conjunction with the feed claws 40a and 40a.
The claw portions of the feed claws 40a and 40a are the left and right conveyance guide portions 30.
From the state of entering the opening provided in b'and engaging with the square holes for feeding the seedling box provided on the left and right end edges of the seedling box located in the opening, the feeding claw moves upward and the next By engaging the square holes, engaging them, and moving downward again, the seedling boxes are transported laterally by one row.

The operation mechanism of the seedling box feeding device 40 is such that the seedling box feeding drive shaft 40 protruding to the left side of the planted transmission case 16 is provided.
drive plate 40d mounted so as to rotate integrally with c
And the crank arm 4 that interlocks with the feed claws 40a and 40a.
0e are connected by a rod 40f, and a feeding claw 40 is provided by the action of a seedling box feeding cam (not shown) provided in the planted operating case 16.
Seedling box feed drive shaft 40 so that a. 40a operates upward.
While rotating c, the seedling box feed drive shaft 40c is rotated so that the feed claws 40a, 40a are operated downward by the action of the spring 40h. The left and right crank arms 40e and 40e 'are connected to the main seedling box carrying section 30.
It is attached so as to rotate integrally with a rotating shaft 40g that is supported by penetrating the U-shaped inside of b. A seedling box feed manual lever 41 is integrally attached to the drive plate 40d. The seedling box feed device 40 is not only driven by the rotation of the feed drive shaft 40c but also by the swing operation of the seedling box feed manual lever 41. Feed operation.

The first seedling take-out device 31 slides the seedlings in the horizontal row of pots at the seedling pushing position P from the seedling boxes loaded in the seedling box transporting device 30 and sequentially sent to the seedling pushing position P. It is a device for pushing out with the seedling extruding pin 31a. This first seedling take-out device 31 is used in the planted transmission case 1
The push-out driving shaft 31b protruding to the left side of 6 is connected to the push-out operating shaft 31f attached to the push-out operating shaft 31f of the push-out operating case 31e so as to rotate integrally with the push-out operating shaft 31f via the telescopic rod 31d. A fan-shaped pinion gear 31h provided so as to rotate integrally in the push-out operation case 31e meshes with a rack of the push-out operation shaft 31i integrally connected to the seedling push-out pins 31a. Therefore, the pushing operation shaft 31i is slid by the rotation of the pushing drive shaft 31b.
The seedling extruding pins 31a ... Are provided at the same number and at the same pitch with respect to the lateral pots of the seedling box, and the extruding pin guides 3
1j is pushed out through the extrusion hole, and then the seedling floor is pushed out through the cut formed in the bottom of the pot for one horizontal row of the seedling box.

The first seedling conveying device 32 receives the horizontal row of seedlings extruded from the seedling box by the first seedling removing device 31 at the seedling holder 32a ... At the seedling receiving position (shown by a chain line in FIG. 3). , A device for transporting the seedlings to the seedling taking-out position (shown by the solid line in FIG. 3) of the second seedling taking-out device 33. The first seedling transport device 32 includes a drive arm 32c that rotates integrally with a first seedling box drive shaft 32b protruding from the right side of the planting transmission case 16, and includes a vertical arm provided on both left and right sides of the seedling box transport device 30. The swing arm 32d ', which is integrally rotated with the lower swing arm of the two swing arms 32d, is interlockingly connected via a telescopic rod 32e. The tip of the swing arm 32d ... is a seedling holder 32a.
Support plates 32f and 32f fixed to the left and right side ends of the swing arm 32d for swinging with the swing shafts 32h and 32h as pivots and the support plate 32.
A parallel link is formed by f and 32f.

When the drive arm 32c is driven to rotate, the seedling holder 32a reciprocates in a locus that draws an arc between the seedling receiving position and the seedling removing position. When the swing arms 32d move upward due to the drive rotation of the drive arm 32c and the seedling holder 32a reaches the seedling receiving position, the lower swing arm hits the stopper bodies 32g, 32g and stops. The drive arm 32c still rotates and swings the swing arm 32d.
, But the swing arm is stopped by the stopper bodies 32g and 32g as the telescopic rod 32e extends (the spring 32e ″ in the spring case 32e ′ of the telescopic rod 32e contracts). Therefore, the lower swing arm is the stopper body 32.
While in the state of being stopped by hitting g · 32g, the seedling holder 32a is located at the seedling receiving position, and the first seedling removing device 3
Receive the seedling extruded by 1. Also, when the seedling holder 32 moves up to the seedling receiving position, the swing shaft 32h
Since the arm 32h 'which is integrated with the lever operates so as to stretch the spring 32h "attached to the tip of the arm 32h', the momentum when the swing arm moves upward is killed, and the stopper body 32h is stopped.
The shock when the lower swing arm hits the g / 32g and stops is mitigated.

The seedling holder 32a has a first seedling removing device 3
Receiving the seedlings extruded by the step 1, the concave seedling holding portions 32i are formed in accordance with the left and right positions of the pots of the seedling boxes conveyed by the seedling box conveying device 30. Then, on the bottom of the seedling holding portions 32i,
2j are provided respectively. This seedling retaining claw 32
j are integrally attached to a rotating shaft 32k which penetrates the base of the seedling holder 32a in the lateral direction, and the rotating shaft 3 is arranged so that the claws protrude upward from the bottom of the seedling holding portions 32i.
2k is a spring 32l attached to both left and right outer ends
Urged by 32l. Thereby, when the seedlings move in the seedling holding portion in the seedling pushing direction of the first seedling extracting device 31 and the seedling extracting direction of the second seedling extracting device 33, the seedling retaining claws 32j are retracted from the seedling holding portion 32i, And when the seedling moves in the opposite direction, the seedling retaining claw 32j
Project into the seedling holding portions 32i, and the tips of the projecting portions are hardly inserted into the seedling bed. It should be noted that 2 in the left and right central portions of the seedling holder 32a.
The two rotating shafts 32k are provided to face each other.

Further, a pawl rotating arm 32m which rotates integrally with both rotary shafts is attached to the left and right center sides of the rotating shafts 32k and 32k, and an operating arm 32n is attached to a boss portion of the pawl rotating arm.
Is rotatably fitted on the outer surface of the claw rotating arm 3 by a pair of stoppers 32n 'and 32n' formed on the operation arm.
The rotation of 2 m is restricted. A roller 32n "is rotatably attached to the tip of the operation arm 32n, and a spring for urging the lower end of the operation arm 32n so as to rotate the claw rotation arm 32m in a direction in which the claw 32j projects upward. 32o is attached.Spring 32o
The other end is hooked on a connecting pipe 32f 'connecting the left and right support pipes 32f, 32f, and a center connecting member 32f "connecting the left and right central portions of the connecting pipe 32f' and the left and right central portions of the seedling holder 32a. The spring 32o urges the rotating shafts 32k, 32k because the springs 32l are driven by the rotating shafts 32k, 32k.
It is set stronger than the force for urging 32k.

When the seedling holder 32a is located at the seedling receiving position, the roller 32n "hits the upper cam plate 32p attached to the rear side of the center of the main seedling box transporting portion 30b and the operating arm 32n is pushed down to rotate the nail. Moving arm 32m
Are forcibly rotated so that the seedling retaining claws 32j are retracted from the bottom of the seedling holding portions 32i. The seedling retaining claws 32j are rotatable against the springs 32l within the range of the pair of stoppers 32n ', 32n', and the seedling is pushed into the seedling holder 32a in this state. Therefore, the seedlings are pushed into the seedling holder 32a while giving a little resistance by the seedling retaining claws 32j that are biased by the weak springs 32l, so that the seedlings hold securely without the seedlings jumping out. Is held within.

When the seedling holder 32a moves downward, the roller 32n "is released from the upper cam plate 32p, so that the operation arm 32n becomes free and the strong spring 32 is released.
O also acts on the seedling retaining claws 32j. Therefore, while the seedlings are being transported by the seedling holder 32a,
The tips of the seedling retaining claws 32j... Largely penetrate the seedling bed of the seedlings held in the seedling holding parts 32i.

When the seedling holder 32a moves to the seedling take-out position, the lower cam plate 32q is hit by the roller 32n "and the operation arm 32n is pushed down, and the claw rotating arm 32 is moved.
m is forcibly rotated so that the seedling retaining claws 32j ... Withdraw from the bottom of the seedling holding portion 32i.
The seedling pull-out preventing claws 32j ... Do not become a resistance against the seedling pulling-out action of.

When the seedlings are extracted from the seedling holding portion 32i and the seedling holder 32a starts to return to the seedling receiving position, the seedling retaining claws 32j ... Return to the state of projecting into the seedling holding portion 32i. The timing is 3 seedling retaining claws
2j ... is returned until it passes above the front end portions of the seedling feeding belts 34a and 34a, and when it is retracted from the bottom portion of the seedling holding portion 32i ... as shown by a chain line in FIG. The lower part of the seedling retaining claws 32j, which are on the lower side, does not catch the seedlings on the seedling feeding belts 34a, 34a of the second seedling conveying device 34 described later.

The second seedling take-out device 33 is the first seedling transfer device 3
When 3 moves to the seedling take-out position, seedling holder 32a
This is a device for extracting the seedlings held in each of the seedling holding portions 32i with a seedling extraction tool 33a and dropping them on the seedling feeding belts 34a of the second seedling transfer device 33. Seedling extractor 3
3a is formed in a comb shape, and the seedling removing portions 33a 'protruding downward are moved to the seedling extracting position.
The seedlings n held in the seedling holding portions 32i of 2a are received and only the seedling holders 32a are passed to extract the seedlings.

The seedling extractor 33a is provided with a drive shaft 31 of the first seedling extracting device which projects to the left side of the planted transmission case 16.
cam disk 33b mounted so as to rotate integrally with b
It is provided to move up and down. That is, the base of the seedling extractor 33a is connected to the rotating arm 3 via the connecting member.
3c is integrally attached, and its rotating arm is rotatably attached to the arm support shaft 33d. Rotating arm 33
A pin 33e is fixed to c, and a spring 33f for urging the pin 33e to contact the cam surface of the cam disk 33b is attached to the rotating arm 33c. As shown in FIG. 8, the cam disc 33b has a recess 33b 'in which the pin 33e is depressed to rotate the seedling extractor 33a downward.
Then, the pin 33e is pushed out following the concave portion to remove the seedlings 3
3a "for lifting the seedling 3a high. As a result, when the seedlings are taken out from the seedling holder 32a, the seedling removing tool 33a immediately moves downward to feed the seedlings to the seedling feeding belt 34a.
After forcibly dropping it onto 34a and raising seedling extractor 33a once when seedling holder 32a passes,
The seedling extracting tool 33a is moved down to a certain height again, and the soil attached to the seedling extracting tool 33a is dropped by vibration.

The second seedling feeding device 34 is the second seedling removing device 3.
The seedling feeding belt 34 for the horizontal row removed by 3
It is a device that receives on the a. 34a and conveys the left and right halves to the left and right seedling planting devices 35, 35 at the seedling picking positions S, S.
The second seedling transport device 34 has drive shafts 34b, 34b that project to the rear side of the planted transmission case 16 and rotate in mutually opposite directions.
Drive rollers 34c and 34c are integrally connected to the drive roller and driven rollers 34d and 34d rotatably supported on the left and right inner sides of the drive roller 34c.
34a wraps around the left and right seedling feeding belts 34a, 34
The upper surface of a is operated so as to move to the left and right sides respectively. In addition, on the outer peripheral surface of the seedling feeding belt 34a, a plurality of rows of protrusions 34a 'arranged in the movement direction are arranged.
Are provided and the seedlings are conveyed while being sandwiched between the left and right sides of the protrusions 34a '.... The operation of the seedling feed belts 34a, 34a conveys the seedlings to the seedling collecting position in accordance with the timing at which the seedling planting devices 35, 35 pick up the seedlings one by one from the seedling collecting positions S, S.

Between the left and right seedling feeding belts 34a, 34a,
Moreover, brushes 34e and 34e for dropping the mud adhering to the seedling feeding belts 34a and 34a are provided at positions above the vertical center of the seedling feeding belts 34a and 34a, and the tips thereof are on the outer peripheral surface of the seedling feeding belts 34a and 34a. It is provided in contact with each other. By providing the brushes 34e, 34e at the above positions, the mud attached to the roots of the projections 34a '... Can be removed, and the left and right brushes 34e, 34e can be attached to the common attachment member 34f. can do.

As shown in FIG. 15, the seedling feeding belt 34a includes an inner belt 34a (I) provided with projections 34a '... and a projection hole through which the projections 34a' ... of the inner belt project outward. The outer belt 34a (O) has a double structure, and the lower path of the inner belt 34a (I) is diverted to the upper side by tension rollers 34g, 34g, etc., and the scraper 34h is attached to the outer peripheral surface of the outer belt 34a (O). It may be configured to scrape off the mud by applying.

Further, the protrusion 3 is provided on the lower side of the seedling feeding belt 34a.
It is also possible to provide a scraper that rotates by engaging with 4a '... to drop the mud adhering to the seedling feeding belt 34a.

Above the seedling feeding belts 34a, 34a,
A seedling that switches between a state in which the seedbed of the seedling on the seedling feeding belt is pressed from above with a corrugated holding plate 50a and fixed so that the seedling does not move, and a state in which the holding plate 50a is lifted from the seedbed and the seedling is not fixed. A fixture 50 is provided. The seedling fixture 50 is integrally attached to an arm 50b that is rotatably fitted to the arm support shaft 33d of the second seedling take-out device 33, and the arm 50b and the planting / elevating lever 51 are connected to the wire 50c. Tied with. Further, the arm 50b is urged by the spring 50d toward the side where the seedling fixing device 50 rotates downward. As a result, when the planting / elevation lever 51 is operated to “engage the clutch with planting”, the seedling fixture 50 is held at a position on the seedling feeding belt where the seedling fixture 50 does not secure the seedlings by being pulled by the wire 50c. , Set the planting / elevating lever 51 to "Clear planting clutch" or "Raise planting section"
When operated, the wire 50c comes to a position where the seedling fixing tool 50 fixes the seedlings on the seedling feeding belt by the action of the spring 50d.

The seedling planting device 35 is a device for picking up the seedlings transferred to the seedling picking position S by the second seedling transfer device 34 one by one and planting them in the field, and is integrated with the planting drive shaft 35a. Two seedling planting devices 35 provided on a rotating rotating case 35b
c ・ 35c is provided. The planted drive shaft 35a is rotatably supported by bearings 60, 60 on the rear portion of the planted transmission frame 16a. The rotating case 35b has the planted drive shaft 3
It is integrally attached to 5a by a key 61. Two seedling plant attachment shafts 63, 63 are rotatably supported on the rotating case 35b by bearings 62, 62, 62, 62, and the plantlets are attached to the outer ends of the seedling plant attachment shafts. The support tubes 64, 64 are integrally attached by bolts 65, 65, and the seedling planting tool 35c, 35c is slidably supported on the seedling planting body support tube. One end of the seedling planting implement 35c, 35c and an appropriate place of the rotating case 35b are connected by a spring 66, 66.

A cam plate 69 integral with the planted transmission frame 16a is provided inside the rotary case 35b, and an arm which integrally operates with the seedling planting body mounting shafts 63, 63 is provided in a guide groove 69a of the cam plate 69. Cam pins 71, 71 provided at the tip of 70, 70 are slidably fitted. The shape of the guide groove 69a of the cam plate 69 is a loop shape having an eccentric unequal diameter, and the cam pins 71, 71 move along the guide groove 69a, so that the seedling planting implements 35c, 35c with respect to the rotating case 35b. The angle changes sequentially. Further, the springs 66, 66 expand and contract due to the change of the angle of the seedling planting equipment 35c, 35c, and the seedling planting equipment 35c, 35c slides along the planting body support cylinders 64, 64 accordingly. Then, it projects and retracts.
When the seedling planting implements 35c and 35c move from top to bottom, they are gradually retracted, and when the seedling planting implements 35c and 35c are almost directly below, the seedling planting implements 35c and 35c
c projects at a stretch.

As a result, the seedling planting implements 35c and 35c operate by drawing a tip locus T ₁ (tip movement locus T ₂ in consideration of the progress of the machine body), and the seedling N supplied to the seedling picking position S is fed to the field. Alternately plant at the seedling planting position. T ₁ ′ is a seedling planting device 35c
35c is a tip locus of a conventional seedling planting device that does not operate to project / pull in (tip movement locus T ₂ ′ in consideration of the progress of the machine body). As is clear from a comparison between the two trajectories T ₁ and T ₁ ′, the seedling planting implements 35c and 35c are projected near the seedling planting position to push out the seedlings.
The holes that 5c and 35c make in the soil can be made smaller, and the planted seedlings become stable. As a method of causing the seedling planting implements 35c and 35c to project and retract, in addition to the method shown in the drawings, it is also possible to use a solenoid valve or the like to forcibly operate.

The seedlings N of the seedling feeding belts 34a, 34a of the second seedling conveying device 34 are at the belt end and the seedling picking positions S, S.
It is dropped into the seedling receiving portions 35d and 35d provided in the. The seedling receiving portions 35d, 35d are formed on the upper portions of the plate-shaped planting guides 35e, 35e, 35e, 35e arranged on the left and right, and the guide plate intervals of the planting guides are widened to the left and right to receive the seedlings. Has become. The seedling N received by the seedling receiving portions 35d and 35d is the seedling planting tool 35 that moves from above.
c ・ 35c received at the tip of the planting guide 35e ・
It moves between 35e, 35e, and 35e, and seedlings are planted in the field.

[0035]

As described above, the seedling transplanting machine according to the present invention is provided with the seedling fixing tool for fixing the seedlings on the seedling feeding belt from above so as not to move when the seedling planting is stopped. The position of the seedlings on the seedling feeding belt was prevented from being displaced due to vibration when the aircraft was turning or moving at high speed, and the seedlings could be planted correctly when the planting was restarted after the planting work was stopped.

[Brief description of drawings]

FIG. 1 is an overall side view of a seedling transplanter.

FIG. 2 is a left side view showing a part of the planting portion.

FIG. 3 is a right side view showing a part of the planting portion.

FIG. 4 is a rear view showing a part of the planting portion.

FIG. 5 is a partial cross-sectional front view of a seedling holder.

FIG. 6 is a sectional view taken along line S1-S1 of FIG.

FIG. 7 is a sectional view taken along line S2-S2 of FIG.

FIG. 8 is a left side view of the second seedling removing device.

FIG. 9 is a right side view of the second seedling carrier device.

FIG. 10 is a rear view of the second seedling carrier device.

FIG. 11 is a left side view of the seedling planting device.

FIG. 12 is a rear cross-sectional view of the seedling planting device.

FIG. 13 is a side sectional view of a rotating case.

FIG. 14 is a diagram showing a locus of movement of the tip of the seedling planting tool.

FIG. 15 is a side view showing a different configuration of the seedling feeding belt.

[Explanation of symbols]

 C seedling box 1 seedling transplanter 2 traveling car body 3 link device 4 planting section 30 seedling box transport device 31 first seedling removal device 32 first seedling transport device 33 second seedling removal device 34 second seedling transport device 34a seedling feeding belt 35 Seedling planting device 50 Seedling fixture

Claims (1)

[Claims] 1. A seedling transplanter that uses seedlings grown in a seedling box in which a large number of pots, each of which holds one seedling, are arrayed vertically and horizontally. A seedling transplanter comprising a belt and a seedling fixing tool for fixing the seedling on the seedling feeding belt from above when the seedling planting is stopped so as not to move.