JPH07308106A - Seedling transplanter - Google Patents

Abstract

PURPOSE:To provide a seedling transplanter so designed that, when seedlings held in a 1st seedling conveyer are drawn by a 2nd seedling drawer and allowed to fall, onto the seedling feed belt of a 2nd seedling conveyer, a laterally aligned seedlings are ensured not to cause longitudinal misregistration, thereby preventing the disturbance of seedling planting posture. CONSTITUTION:This seedling transplanter is so designed as to equipped with a 1st seedling drawer to draw seedlings (n) from respective pots each of which holds one of the seedlings (n) and arranged both laterally and longitudinally in a seedling box, a 1st seedling conveyer to receive the seedlings drawn by the 1st seedling drawer and convey them, a 2nd seedling drawer to draw the seedlings being conveyed by the 1st seedling conveyer at a specified position from this conveyer, and a 2nd conveyer equipped with a seedling feed belt 34a to receive the seedlings drawn by the 2nd seedling drawer and convey them to the seedling taking position of a seedling planting device. In this case, the 2nd seedling drawer is equipped with a specific device 33g to push down seedlings so that the leaf side thereof take a downward posture in drawing them by the 2nd seedling drawer.

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 taking out seedlings from each pot from a seedling box in which a large number of pots for arranging seedlings are arranged vertically and horizontally and planting them in a field.

[0002]

2. Description of the Related Art A first seedling take-out device for taking out seedlings from each pot from a seedling box in which a large number of pots for storing one seedling are arranged vertically and horizontally, and receiving and carrying the seedlings taken out by the first seedling take-out device And a second seedling take-out device for taking out the seedlings being carried by the first seedling carrying device from the seedling carrying device at a predetermined position, and a seedling receiving the seedling taken out by the seedling taking device There was a seedling transplanter equipped with a second carrier equipped with a seedling feeding belt for carrying to the seedling picking position of the implanter.

[0003]

Conventionally, when the seedlings held by the first seedling conveying device are taken out by the second seedling extracting device and dropped onto the seedling feeding belt of the second seedling conveying device, the first seedling conveying device is used. Due to differences in the shape and hardness of the floor of the seedlings held in, and the difference in seedling holding power, the amount of each seedling popping out when taking out differs, and when placed on the seedling feeding belt, the seedlings in one row on the left and right There was a problem that the planting was disturbed because it was displaced back and forth, and it was not conveyed accurately to the seedling picking position of the seedling planting device.

[0004]

[Means for Solving the Problems] In order to solve the above problems, the following means were taken. That is, a first seedling take-out device for taking out seedlings from each pot from a seedling box in which a large number of pots for storing one seedling are arranged in a matrix, and a first for receiving and carrying the seedlings taken out by the first seedling take-out device. Seedling transport device,
A second seedling take-out device that takes out the seedlings being carried by the first seedling carrying device from the seedling carrying device at a predetermined position, and receives the seedlings taken out by the seedling taking-out device to a seedling taking position of the seedling planting device. In a seedling transplanter equipped with a second transport device equipped with a seedling feed belt for transporting, the seedling pushing device that pushes down the leaf portion side of the seedling to a lowered posture when the seedling is removed by the second seedling removal device A seedling transplanter characterized by being installed in.

[0005]

According to the present invention, therefore, the seedling pushing-down member provided in the second seedling removing device pushes down so that the leaf portion side of the seedling is in a lowered posture when the seedling is taken out by the second seedling taking-out device. As a result, when falling on the seedling feeding belt, the leaf part of the seedling comes into contact with the belt first and the floor part comes into contact later, and the leaf part that comes into contact with the belt first pops out backward. On the other hand, it works as a braking action, and prevents the seedlings on the seedling feeding belt from being displaced in the front and rear.

[0006]

As described above, since the seedlings taken out by the second seedling take-out device are inherited to the proper position on the seedling feeding belt of the second conveying device without being displaced back and forth, the inherited seedlings are The seedlings can be accurately transferred to the seedling picking position of the seedling implanting device and can be planted properly.

[0007]

EXAMPLE An example of the present invention will be described below. As shown in FIG. 1, the whole structure of the seedling transplanting machine 1 is equipped with a 6-row planting section 4 via a link device 3 which is moved up and down on the rear side of a riding type traveling vehicle body 2. Further, a fertilizer hopper 5a of a side-row fertilizer applicator and a fertilizer feeding device 5b for feeding fertilizer for each row are arranged at the rear part of the traveling vehicle body 2.
This seedling transplanter 1 is for planting 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 structure of each part of the seedling transplanter 1 will be described below. The traveling vehicle body 2 is provided with a pair of left and right steering front wheels 6.6 that are driven and rotated, and a pair of left and right rear wheels 7 and 7 that are driven and rotated, and a mission case 9 is provided on the front side of the frame 8.8. ,
The engine E is mounted on the rear side, and the rotational power of the engine E is temporarily transmitted by the belt transmission device 10 to a hydraulic pump attached to the upper part of the transmission case 9, and from there, a belt transmission device capable of continuously variable transmission operation. 11 is transmitted into the mission case 9. The power in the mission case 9 is transmitted to the front wheels 6.6 and the rear wheels 7.7, and the transmission shaft 9a, the intermediate case 9b, and the transmission shaft 9 are also transmitted.
It is transmitted to the planting part 4 via c. Reference numeral 12 is a steering wheel for steering the front wheels 6, 6, 13 is a seat on which the operator sits, and 14 is a step floor when the operator moves on the traveling vehicle body 2.

The link device 3 includes a frame 8 of the traveling vehicle body 2.
The upper link 15a, which is attached to the link base 8a fixed to the rear end of the
15a and lower links 15b and 15b are rotatably attached, and vertical links 15c are attached to the rear ends of these upper and lower links.
Are connected. Then, the planting portion 4 is attached to the connecting bearing portion 15c ′ protruding rearward from the lower end portion of the vertical link 15c.
An integral connecting shaft 16 'is rotatably connected to the central planting transmission case 16 so that the planting part 4 is mounted rotatably left and right with respect to the traveling direction. Further, the hydraulic cylinder 17 is attached by being connected to the tip end of an arm 15a 'integrally fixed downward from the base of the upper link 15a via a spring. ing. When the hydraulic cylinder 15 expands and contracts, the upper and lower links 15a, 15b, 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 silling 17 is controlled by a hydraulic valve 18.

Numerals 20 and 20 are spare seedling mounting bases, in which a plurality of mounting bases for mounting seedling boxes C ... are provided on the upper and lower shelves, which are fixedly provided on the left and right sides of the front part of the traveling vehicle body 2. is there. Two
1.21 is a wire-drawing marker, which is provided on the left and right sides of the front part of the machine body so that it can be switched up and down. By the way, the seedling box C used in this seedling transplanting machine 1 is a flexible plastic seedling box and has a shape as shown in the figure. That is, the small pots C '... are lined up at right and left and front at a predetermined interval, the openings C'a ... Are connected to each other, and the bottom C'b ... Further, right and left edge portions Ca and Ca along the longitudinal direction of the seedling box C are provided with square holes Cb ... For feeding the seedling box in accordance with the longitudinal intervals of the pots C ′. The bottom C'b of each pot C '... is provided with a cut C'c into which the seedling pushing pin 31a can enter from the bottom side. Cc is a wide space | interval part provided toward the longitudinal direction in the left-right (short direction) center. For raising seedlings, each pot C '... is filled with bed soil, sowed, covered with soil, and raised. In this way, each pot C '... Seedling box C where one seedling was raised
The seedlings are loaded into the planting section 4 together with the seedling boxes, and the seedlings are taken out by being pushed out from the bottom side by the seedling pushing pins 31a.

The planting section 4 has a six-row planting structure, and has a seedling box transporting device 30, 30, 30 and a first seedling extracting device 31, 31.3.
1, first seedling conveying device 32.32,32, second seedling take-out device 33.33.33, second seedling conveying device 34.34.34,
A seedling planting device 35 is provided. Each seedling box carrier 30 ...
Are loaded with a plurality of seedling boxes C ..., and the first seedling take-out device 31 pushes the seedlings n ... from the pots C ′ ... in a horizontal row of the seedling boxes C conveyed to the seedling pushing position all at once. The extruded seedlings n ... are seedling holders-32 of the first seedling transport device 32.
It is held by a and is conveyed in a locus that draws an arc toward the lower front, and is withdrawn by the second seedling take-out device 33. The removed seedlings n ... are laterally divided into left and right halves by the second seedling transfer device 34 ... The planting device 35 ... Is taken and planted in the field. A center float 36 and a pair of left and right side floats 37, 37 are provided in the lower part of the planting section 4, and during the planting work, these floats slide while leveling the field scene. Also, each of these floats 3
6, 37, 37 are equipped with a grooving device 38, which forms a groove for fertilization in the field scene near the seedling planting position of each row,
A U-shaped fertilizer guide 5c having an open rear cross-section in plan view is attached to the rear side thereof, and fertilizer hoses 5d for transferring the fertilizer fed from the fertilizer feeding device 5b are connected thereto for each line. ing. Further, the center float 36 is also a sensor for detecting irregularities 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 18 is operated in a direction to extend the hydraulic cylinder 17, and conversely, when the center float 34 moves downward, the hydraulic valve 18 is operated in a direction to contract the hydraulic cylinder 17. As a result, the planting unit 4 is controlled so as to maintain a constant height with respect to the field scene.

The seedling box transporting devices 30 ... are provided in three units at the center, left and right, and are provided on the upper portion in a state of being inclined rearward and downward. The seedling feeding units (seedling feeding units) 30a.
And a main seedling box transfer section (main supply section) 30b that joins the seedling box transfer paths from the two-stage seedling box supply section and transfers it downward, and then bends upward in a U shape in a U-shape. , And subsequently, an empty box transfer section 30c extending upward to just below the seedling box supply section ...
With. At the exit of the empty box carrying section 30c, there is provided an empty box housing frame 30d, which houses a plurality of empty seedling boxes C. In this seedling box carrying device 30, the main seedling box carrying section 30b is supported on the upper side of each planted transmission case 16 and the base is fixed in the U-shape of the main seedling box carrying section 30b. The seedling box supply sections 30a, 30a ..., the empty box transport section 30c, and the empty box storage frame 30d ... are supported by the formed seedling box supply section support frame 30e.

At the seedling pushing position (seedling receiving position of the seedling holder-32a) P3, the seedling box conveying device 30 has a seedling box C ...
Are provided, and the seedling box feeding devices 40, 40 ... For feeding the seedling boxes one row at a time along the pot are provided at an appropriate timing. The seedling box feeders 40, 40 ... Are provided on the left and right conveyance guide portions 3 of the main seedling box conveyance section 30b in the vicinity of the seedling pushing position P3.
0b ′ ... and provided with feed claws 40a, 40a that reciprocate along the seedling box transport path, and locking claws 40b, 40b that are engaged and disengaged in conjunction with the feed claws 40a, 40a. The feed claws 40a and 40
The edge portion Ca of the seedling box C located in the groove of the claw portion of a enters the opening provided in the left and right transport guide portions 30b '...
The pot is moved from the state in which it is engaged with the seedling box feeding square holes Cb ... The configuration is such that C ′ ... The operation of the seedling box feeding device is interlocked with the seedling box feeding drive shafts 40c protruding to the left side of the planting transmission cases 16 so that the first seedling extracting device 31 pushes out the seedlings. The push-out pins 31a ... Are fed from the bottom of the pot C '... until the next seedling push-out operation is started. In addition, this feed claw 40
The feeding operation of the a. 40a ... The driving plate 40d attached to the seedling box feed drive shaft 40c of the planted transmission case 16 so as to rotate integrally with the feeding claws 40a.
Are connected to crank arms 40e ... Crank arms 40e, 40e 'provided on the left and right of each seedling box transport device 30, 30, 30 respectively.
Are attached so as to rotate integrally with one rotating shaft 40g, which is supported by penetrating the U-shaped inner side of each main seedling box transporting unit 30b. The upward movement of the feeding claws 40a, 40a, that is, the operation in the direction opposite to the feeding direction of the seedling box, is performed by the planted transmission case 16
Driven by the seedling box feed cam 45c in the ...
The downward movement of 0a and 40a, that is, the operation in the seedling box feeding direction, is provided so as to be driven by the spring 40h. Further, seedling box feeding manual levers 41, 41, 41 are integrally attached to the drive plates 40d, 40d, 40d, respectively. Therefore, not only the drive rotation of the feed drive shafts 40c, but also the rocking operation of the seedling box feeding manual lever can feed and operate the seedling box feeding device.

The feed claws 40a, 40a are moved upward, that is, the feed claws 40a, 40a are operated in a direction opposite to the feeding direction of the seedling box, so that the feed claws 40a, 40a are
And the engaging claws 40b and 40b are disengaged from the seedling box C, the seedling box sent to the seedling box feeding device is the edge edge portion Ca and Ca of the seedling box. A brake member BK that is pressed against the back surface of the spring by a spring SP
It is in a stopped state only in BK. In this state, when a new seedling box is subsequently replenished and an action of pushing the seedling box is added to the seedling box being transported by the seedling box feeder, the seedling box is displaced in the transport direction, and subsequent seedling boxes are displaced. Trouble may occur in the box transportation operation and seedling extraction operation. Therefore, as shown in FIG. 22, the feeding claws 40a and 40a and the locking claws 40b and
When the detector (limit switch) SW1 detects that 40b is disengaged from the seedling box, a lamp LMP that warns not to replenish the seedlings is turned on. Upon detection, the solenoid SLD is operated to engage the shutter 52 so that the seedling supply shutter 52, which will be described later, will be in an open-lock state, and the seedling box feeding device will not push the seedling box being conveyed. Good.

The first seedling take-out device 31 ... is loaded from the seedling box transporting device 30 ... and sequentially sent to the seedling pushing position P3 from the seedling box C, the pots C'at the seedling pushing position P3 ... Horizontal row by row. It is a device for pushing out the seedlings n ... in the pot with the seedling pushing pins 31a. The first seedling take-out device 31 ... Is interlockingly connected to the push-out drive shafts 31b ... Which protrude to the left side of the planted transmission cases 16. That is, the drive arms 31c ... Which rotate integrally with the push-out drive shafts 31b.
However, through the telescopic rods 31d ...
1e ... is connected to an operating arm 31g attached to the push-out operating shaft 31f so as to rotate integrally therewith, and is provided so as to rotate integrally within the push-out operating shaft 31f and the push-out operating case 31e. Fan-shaped pinion gear 31h
Are meshed with the rack of the push-out operation shafts 31i that are integrally connected to the seedling push-out pins 31a. Therefore, the pushing operation shafts 31i ... Are slid by the rotation of the pushing drive shafts 31b. Seedling extrusion pin 31a
... are provided at the same number and pitch with respect to the lateral pots C'of the seedling box C, penetrate through the extrusion holes 31k of the extrusion pin guides 31j, and operate to project. Minute pot C '... bottom C'b ... cut C'c
Push through the floor of the seedling n ... The projecting / retracting operation of the seedling pushing pins 31a ... is in a seedling box locking state after the feeding operation of the seedling box feeding device is completed, and the seedling holder-32a of the first seedling feeding device 32 ... When it is located at the receiving position) P3 in the stopped state, the projecting operation is performed, and the drawing is completed before the next seedling box movement by the seedling box feeding device is started. 31d '... is a spring 31d "
It is a spring case for interior.

Incidentally, the pins 31a ', 31a' at the left and right ends of the seedling pushing pin 31a, are projected a little longer than the pins on the left and right inner sides. As a result, when the seedlings are extruded, the pins 31a 'and 31a' at the left and right ends are located at the bottom C'of the pots C '... at the left and right ends before the inner pins.
plunge into b ... At this time, even if the position of the seedling box is displaced to the left or right within the range where the pins on both the left and right sides can enter the pots on both the left and right ends, the right and left positions of the seedling box are set to the proper positions by the insertion of the pins on both the left and right sides. Will be fixed. Then, after that, the remaining (12) pins project. Therefore, even if the seedling box is displaced to the left or right, the two pins 31a 'and 31a' at the left and right ends correct the lateral position of the seedling box. The resistance of the seedling extruding pins to the pots C ′ ... can be smaller than that when the seedling extruding pins 31a.
Incidentally, if the lengths of the inner pins 31a of the two pins at the left and right ends are gradually shortened, the load at the seedling pushing operation is further reduced.

The first seedling transporting device 32 ... Receives the horizontal row of seedlings n ... Extruded by the first seedling removing device 31 ... 33 is a device that conveys the seedlings to the seedling take-out positions P1 and P2. This first seedling conveying means 32 ... is a first seedling conveying drive shaft 32b ... Which protrudes to each right side portion of the planted transmission case 16.
The drive arms 32c, which rotate integrally with the swing arm 32c, which rotate integrally with the swing arms 32d, which are provided on the left and right sides of each of the seedling box transporting devices 30, 30, 30.
are connected to d '... through expansion rods 32e.
The tip of this swing arm 32d ... is a seedling holder-32a.
Support plates 32f and 32f fixed to the left and right ends of the ...
, And swing plates 32h, 32d, which swing around the swing shafts 32h, 32h, ... As pivotal shafts, and support plates 32f, form a parallel link. Therefore, when the drive arms 32c ...
2a ... Reciprocate along a locus that draws an arc between the seedling receiving position P3 and the seedling extracting positions P1 and P2. Moreover, the seedling holder-32a ... is the seedling box C between the position P3 and the position P4.
The locus is such that it moves slightly rearward so as to be separated from ... And moves downward, and moves forward and downward between the position P4 and the seedling take-out positions P1 and P2. The swing arm 32d is rotated by the drive rotation of the drive arms 32c.
When the seedling holder 32a ... reaches the seedling pushing position P3, the swing arm 32d ... Stopper body 32g ...
It hits and stops. The drive arms 32c still rotate to try to move the swing arms 32d upward, but the telescopic rods 32e extend (the spring 32e in the spring case 32e 'of the telescopic rod 32e). The swing arm 32d remains stopped by the stopper body 32g. Therefore, while the swing arm 32d hits the stopper body 32g and is stopped, the seedling holder- 32a ... is the seedling receiving position P
3 and receives the seedling n ... Extruded by the first seedling extracting device 31 ... Also, the seedling holder-32a ... is at the position P.
When moving up to 3, the swing shaft 32h ...
32h '... spring 32 attached to its tip
Since it operates to stretch h ”...
The momentum when moving up is killed, and the impact when the swing arms 32d ... Abut on the stopper bodies 32g.

In the first seedling conveying device 32, the seedling holder-32a is stopped at the seedling receiving position P3 before starting the projecting operation (seedling pushing operation) of the seedling pushing pins 31a, and the seedling pushing operation is performed. When the retracting operation of the pins 31a ... Is completed, the pins 31a ... Then, when the second seedling transfer device 34 ... Has just transferred the seedlings n ... received last time to the left and right seedling picking positions, the seedlings n. The second seedling conveying device 34 operates so as to be delivered onto the second seedling conveying device 34. Then again seedling holder-32a
... moves up and returns to the seedling receiving position P3.

The seedling holder-32a includes a first seedling removing device 3
The concave seedling hold portions 32i ... Receiving the seedlings n ... Extruded by 1 are formed in accordance with the lateral positions of the pots C ′ ... of the seedling box C transported by the seedling box transporting device 30. There is. Then, seedling retaining claws 32j ... Are respectively provided at the bottoms of the seedling hold portions 32i .. The seedlings are held 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 tip of the claw is rotated so that the claw retracts when moving in the field, and the claw protrudes when the seedling moves in the opposite direction.
It is installed facing the rear side of 2k. This seedling retaining nail 3
2j ... are integrally attached to rotary shafts 32k, 32k penetrating in the lateral direction of the base of the seedling holder 32a, and the claws of the seedling holder 32a.
The springs 32l, 32l, 32l, 32l for urging the protrusions to project upward from the bottom of the rear part are provided with the rotating shafts 32k.
It is attached to both left and right outer ends of 2k. Furthermore, the rotating shaft 3
A pawl rotating arm 32m is attached to the left and right center sides of the 2k and 32k so as to rotate integrally with the rotating shaft.
The operation arm 32n is rotatably fitted onto the boss portion of the arm, and the stoppers 32n 'and 32 are formed on the operation arm.
The rotation of the claw rotation arm is restricted by n '. A roller 32 is provided at the tip of the operation arm 32n.
n "is rotatably attached, and the seedling retaining hook 32 is attached to the lower end.
A spring 32o for urging the claw rotating arm to rotate so that j ... projects upward is attached. The spring 32o has the other end on the left and right support plates 3
It hooks on the connecting pipe 32f 'that connects the 2f and 32f, and the left and right central portions of the connecting pipe 32f' and the seedling holder-32.
It is arranged below the central connecting member 32f ″ that connects the left and right central portions of a. The force of the spring 32o is relatively strong, and the force of the springs 32l ... Is relatively weak. When the seedling holder 32a is located at the seedling receiving position P3, the operation arm 32n is attached to the rear side of the main seedling transporting section 30b ... Roller 32 on top 32p
n ”hits and pushes down, and the claw rotation arm 32m is forcibly rotated so that the seedling retaining hooks 32j ...
Rotate in the direction of retracting from the bottom of 2i .... The seedling retaining claws 32j ... are stoppers 32n ′ · 32 of the operation arm.
Within the range of n ′, the state becomes rotatable against the springs 32l ... And in this state, the seedlings n are pushed into the seedling holder-32a (FIG. 12). Therefore, the weak spring 32l
The seedling n ... is pushed into the seedling holder 32a while being given some resistance by the seedling retaining claws 32j that are urged by the seedling n.
It is held in the field portion 32i. And seedling holder-3
When 2a moves downward, the operation arm 32n moves to the upper cam plate.
The seedling retaining claws 32j ... In a state in which the seedlings n are held in the seedling holding portions 32i ... It is bited in to ensure that it will not come off during transportation (Fig. 13). When the seedling holder-32a is transported to the seedling extracting positions P1 and P2 by the second seedling removing device 33, the operation arm 32n moves the lower portion 32q of the cam plate.
The roller 32n "hits against the
The seedling retaining claws 32j are retracted from the bottom of the seedling hold portion 32i ... by the forced rotation of the seedlings 32m, and the seedling retaining claws 3 against the seedling extracting action of the second seedling extracting device 33.
2j ... does not become a resistance (Fig. 14).
In addition, since the central connecting member 32 ″ is provided at the rear in the side view, the seedling holder-32a is not located at the seedling receiving position P3.
, The leaves of the seedling n received there are distributed to the left and right by the central connecting member 32 ″.
Are transported downward and removed by the second seedling removing device 33, and the second seedling transporting device 34 splits the seedlings n into left and right halves and transports them to the left and right outside. At this time, the seedlings n ... Which are separately conveyed to the left and right are properly separated to the right and left because the leaf portions are distributed by the central connecting member 32 ″ at the center of the left and right and the entanglement of the leaves is eliminated. Occurrence of shortage planting is prevented.

When the seedlings in the seedling holder-32a are extracted by the second seedling extracting device 33, the extracted seedlings n
A partition part 32a 'for partitioning each seedling holder part 32i left and right at the rear part of the seedling holder-32a so that the ... does not shift left and right.
... is formed. The partition sections 32a '... are opened vertically only by partitioning the partitions to the left and right. In the second seedling extracting device 33 ..., the first seedling transporting device 32 ...
When moving to P2, the seedling extractor 33 removes the seedlings n ... Held in the seedling holder portions 32i of the seedling holder-32a.
It is a device for extracting with a ... And dropping it onto the seedling feeding belts 34a, 34a of the second seedling conveying device 33. Seedling extractor 3
3a ... are formed in a comb shape, and the respective seedling removing portions 33a ′ protruding downward are held in the respective seedling holding portions 32i of the seedling holders 32a, which have moved to the seedling extracting positions P1 and P2. The seedlings n ... are received and only the seedling holders 32a ... Also, the seedling extractor 33a ... Can be moved up and down by a cam disc 33b attached so as to rotate integrally with the drive shaft 31b of the first seedling extracting device 31 protruding to the left side of the planting transmission case 16. It is provided. That is, seedling extractor 3
The base of 3a is integrally attached to a rotating arm 33c via a connecting member, and the rotating arm is rotatably attached to a rotating shaft 33d. A pin 33e is fixed to the rotating arm 33c, 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. Thereby, the seedling extractor 33a ...
Immediately after the seedlings are taken out from the seedling holders 32a, the cam mechanism moves downward so as to forcibly drop the seedlings onto the seedling feeding belts 34a, 34a of the second seedling conveying device 33. The seedling extractor 33a ... Has a stepped portion 33a ″ that holds the floor of the extracted seedling.

The second seedling conveying device 34 receives the lateral one-row seedlings n removed by the second seedling removing device 33 on the seedling feeding belts 34a, 34a, and cultivates left and right half seedlings. It is a device that conveys the seedlings to the seedling taking positions S, S ... of the devices 35. The second seedling carrier device 33 connects the drive rollers 33c, 33c, ... to the drive shafts 33b, 33b, ... which project to the rear side of the left and right transmission frame 40 and rotate in opposite directions so as to rotate integrally. The drive rollers and the driven rollers 33d, 33d ...
Are wound around the seedling feeding belts 32a, 32a ... And the left and right seedling feeding belts 32a, 32a. Further, a plurality of projections 32a '... arranged along the rotation axis direction are provided on the outer peripheral surface of the seedling feeding belt 32a, and the seedling n ... Is sandwiched between the left and right sides of the projections 32a'. The seedling take-out device 33 removes and conveys. The rotation operation of the seedling feeding belts 32a, 32a ...
... transports the seedling n ... to the seedling picking position at the timing of picking the seedlings one by one from the seedling picking position S.
In addition, between the left and right seedling feeding belts, a member 33 having a mountain-shaped cross section is formed.
e ... is provided to cover the gap. Further, the front side of the member 33e having the mountain-shaped cross section (the protrusion 32 of the seedling feeding belt).
Another member 3 having a wide hem on the side)
3f ... is fixed. This is the protrusion 32 on the belt.
When seedlings are placed in the front and rear positions where a '... is not provided,
In order to prevent the seedlings from being conveyed by the seedling feeding belt and to keep rolling at the recessed portion between the belt end and the member having the mountain-shaped cross section, the member covers the retracted portion. (FIG. 20) By the way, the seedlings n ... Held in the seedling holder-32a.
When the seedling is pulled out and dropped onto the seedling feeding belts 34a, 34a of the second seedling carrier 33, the shape of the floor of the seedling n in each seedling holder 32a ...
Due to differences in hardness and seedling holding power, the amount of each seedling n ... protruding at the time of extraction is different, and when placed on the seedling feed belts 34a and 34a, the right and left rows of seedlings n ... It may be misaligned. Therefore, the seedling pushing tool whose bottom end is curved upward (seedling pushing member)
33g ... Are integrally attached to the rear side of the seedling extractor 33a. This seedling pushing tool 33g ... and seedling removing tool 33
When the seedlings n ... are taken out from the seedling holder-32a ... by a ..., the postures of the seedlings n. As a result, when falling onto the seedling feeding belts 34a, 34a,
Seedling n ... The leaf part comes into contact with the belt first and the floor part comes into contact with the latter part and falls, so that the leaf part that comes into contact with the belt first tries to jump out backward, but the braking action The position shift of the seedlings n on the seedling feeding belts 34a, 34a is prevented. Also, the seedling feeding belt 34
The rubber ridges 32a "are integrally fixed to the outer peripheral surface of the a 34a, and when the seedlings are placed on the seedling feeding belt, the ridges 32a" are placed on the ridges 32a ". It is like this. Therefore, the ridges 32a "... Bring the seedlings to the front and rear while shifting them (Fig. 19). The seedling pushing tool 33g is a leaf spring material. However, a rubber material may be used as long as it provides the same action, and the shape is not limited to the above-mentioned shape.

The seedling planting device 35 ... is a second seedling carrier device 34.
It is a device that picks up the seedlings n ... Carried to the seedling picking position S ... one by one and plant them in the field. This seedling planting device 3
Numeral 5 is a planted transmission frame 43 that extends rearward from the left and right transmission frames 42. Attached to the rear left and right sides of the transmission frame 43, equipped with a cam body which is non-rotatably fixed inside, and the case side is planted. A rotary case 35b that rotates integrally with the drive shaft 35a is provided with two seedling-implanting rods 35c and 35c. The tips of the two seedling planting rods 35c, 35c move in a closed loop locus T and alternately plant seedlings in the field. The seedlings n on the seedling feeding belts 34a of the second transport device 34 are provided at the seedling picking position S at the end of the belt.
Dropped into ... The seedling receiving portions 35d, 35d ... Are formed on the upper part of the plate-shaped planting guides 35e, 35e, ... Which are 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 n. Has become. Seedling receiving part 3
The seedlings received by 5d, 35d ... Are received by the tips of the seedling planting rods 35b, 35b moving from above and move between the planting guides 35e, 35e. The width between the left and right sides of the planting guides 35e, 35e is slightly narrower than the width of the floor of the seedling. And the seedling planting rod 35c is the planting guide 35.
Even if it goes out between e and 35e, the tip of the rod 35c with seedlings is transferred to the mud in the field while keeping the floor. When the seedlings stand upright in the mud, the seedling-planting rods 35c move upward with their tip loci slightly recessed upward (this prevents the seedling-planting rods 35c and 35c from tilting the seedlings rearward). Planted in the field), seedlings are planted in the field.

The transmission mechanism of the planting section 4 will be described below. Power is input from the transmission case 9 of the traveling vehicle body 2 to the input shaft 42 'provided at the input portion of the left and right transmission cases 42 via the transmission shaft 9c and the like. Power is transmitted from the input shaft 42 'to the planted transmission shaft 42a via the bevel gears 42'a and 42a', and the planted transmission case 16 ...
It is transmitted to the transmission mechanism in the frame 43. Planted transmission case 16
In the inside, transmission is made from the planted transmission shaft 42a to the pushing drive shaft 31b through the gear 42b, the gear 44a on the counter shaft 44, the gear 45a, and the clutch 45b.
A seedling box feed cam 45c is attached to the push-out drive shaft 31b so as to rotate integrally, and the feed drive shaft 40 is attached to the cam.
Roller 4 of arm 46 assembled to rotate integrally with c-4
6a abuts, and the feed drive shaft 40c is rotated. In addition, the first seedling transfer drive shaft 3 is driven from the shaft end portion of the push-out drive shaft 31b via the non-uniform speed transmission device (non-uniform speed operation means) 47.
2b is transmitted at a non-constant speed. Further, the power is transmitted from the planted transmission shaft 42a to the drive shafts 33b, 33b, ... Of the second seedling transfer device 33 ,. Further, from the planted transmission shaft 43 to the sprocket 42d ..., the chain 42e.
, And is transmitted to the planting drive shaft 35a via the sprocket on the planting device side to drive the planting device 35. 45
b '... are clutch operation pins for operating the clutches 45b ...

By the way, the non-uniform speed transmission device (non-uniform speed actuating means) 47 has a non-circular gear 47a assembled so as to rotate integrally with the pushing drive shaft 31b, and the first seedling conveying drive shaft 32.
The non-circular gear 47b assembled so as to rotate integrally with b meshes with the non-circular gear 47b to transmit the gear at a non-constant speed.
As an example is shown in FIG. 7, the pitch radius of the gear changes in magnitude depending on the angle, and specifically, the cycle of the magnitude change is set to be three cycles per one rotation of the gear. Thereby, the seedling holder-32 of the first seedling transport device 32
The operating speed of a is set to the minimum speed and the low speed at the following three points.

The seedling holder-32a moves to the seedling receiving position P3.
When the seedlings are received and transported, the second speed of movement is within the section of the seedling extracting positions P1 and P2 where the seedlings are extracted by the second seedling extracting device 33, or immediately before or immediately after that, the minimum speed is reached. Therefore, the seedling extracting operation by the second seedling extracting device 33 is performed at a low speed. In addition, by doing so, it is possible to suppress the positional displacement (displacement in the extracting direction) of the seedlings on the second seedling conveying device 34 after the seedlings are extracted by the second seedling extracting device 33, which is caused by the difference in the size and hardness of the seedlings. Can
The planting speed can be increased.

In the process of the seedling holder-32a pulling out the seedlings by the second seedling extracting device 33 and returning to the seedling receiving position P3 again, when the seedling receiving position P3 has just been reached, immediately before that, or immediately after that. , The lowest speed. Therefore, when the swing arm 32d is stopped by the stopper body 32g and the seedling holder 32a is forcibly stopped at the seedling receiving position P3, it shifts to a stopped state at a low speed. still,
As a result, when the seedling holder 32a is stopped at the seedling receiving position P3, it is less likely to collide with the seedling box C and does not disturb the seedlings housed in the pots of the seedling box, resulting in poor seedling removal or missing planting. It is possible to suppress the occurrence of vegetation and increase the planting speed.

The seedling holder-32a moves to the seedling receiving position P3.
In the initial stage of the operation of receiving and transporting the seedlings extruded by the first seedling take-out device 31, the seedling holder-32a is moved forward and backward from the time when the seedling holder-32a starts to be transported from the seedling receiving position P3. Between the position P4 where the direction is switched from the rear to the front (at this time, the seedlings have a maximum inertial force that tries to come out from the inside of the seedling holder toward the rear (the seedling pushing direction and the seedling extracting direction)),
Or, just before that, or just after that, it becomes the lowest speed. Therefore, the seedling holder-32a receives the seedlings and moves at a low speed in the initial stage of the conveying operation. By this, in the seedling transfer operation of the second seedling transfer device 32, the action of attempting to get out of the seedling holder can be reduced, and it is possible to suppress the disturbance of the holding posture of the seedling and the occurrence of dropout, and the planting speed. Can be speeded up.

The non-constant speed transmission device (non-constant speed actuating means) 47 is constructed by using a non-uniform speed transmission gear, but is constructed by using another mechanical or electrical actuation mechanism. May be. The detailed configuration of the seedling supply unit will be described below. In the seedling box supply units 30a, 30a, a slide-like table is provided in two steps vertically downward and on each table, the seedling boxes C, C; C, C are arranged with their longitudinal directions facing forward and backward. It is configured such that two sheets can be placed in series from the front end of the table. In the upper and lower two-stage seedling box supply sections 30a, 30a, a seedling box supply restriction section 50, a confluence section 51, and a main seedling box transfer section (main supply section) 30b are continuously arranged in the rearward and downward supply direction.

The seedling box supply restricting section 50 is provided with seedling box supply shutters (seedling supply restricting bodies) 52. The seedling box supply shutters 52, 52 are placed in the upper and lower seedling box supply parts 30a, 30a in the open lock state.
... is prevented from moving to the main seedling box carrying section 30b. Further, when the open lock is released, the seedling boxes C ... Are allowed to move from the seedling box feeding sections 30a, 30a to the main seedling box carrying section 30b. That is, the seedling box slides down due to the weight of the seedling box and the downward inclination of the seedling box supply section, and the seedling box supply shutter is opened and moved to the main seedling box transport section 30b. ing. The upper and lower seedling box supply shutters 52, 52 are configured so that one side is alternately switched to an open lock state and the other side is switched to an open lock release state.

The seedling box supply shutter 52 is a shutter in which a central receiving member 52a is fixed to the front left and right central portions.
The plate 52b is attached so as to be rotatable around a horizontal rotation shaft 52c. The center receiving member 52a is a rod formed in a "shape" in a side view,
The shutter plate 52b is formed by forming a plate in a cross section in a side view. This seedling box supply shutter-52
Is open-locked, the end of the seedling box C is abutted against the upper portion of the upright portion of the central receiving member 52a to be received. When the seedling box supply shutter 52 is in the open lock released state, the central receiving member 52a is pushed by the seedling box C, and the upper end of the central receiving member 52a is located at the wide interval portion Cc in the left-right center of the seedling box C. The seedling box supply shutter 52 is rotated until it comes into sliding contact with the back side. Further, the seedling box is moved, and the pots C '... in the front end row are moved to the shutter plate 5.
2b is pushed down, and the seedling box supply shutter 52 is rotated until the upper end of the shutter plate 52b slides on the bottom surface of the pot C '... As described above, the seedling box supply shutter 52 is configured to be pushed by the seedling box C, which tends to slide down the inclined surface due to gravity, and rotate to a posture in which the seedling box can pass. When the shutter is rotated, the upright portion of the central receiving member 52a, which the seedling box pushes down first, is provided substantially right above the rotation shaft 52c. Therefore, the shutter rotation operation by the seedling box is performed. Since the lever ratio for use is large, the rotation of the seedling box supply shutter causes the seedling box to slip and the main seedling box transport unit 30b.
It does not interfere with the movement to.

From the above, the above-mentioned seedling transplanter uses the first seedling take-out device for taking out the seedlings from each pot from the seedling box in which a large number of pots for storing one seedling are arranged vertically and horizontally. A first seedling carrying device for receiving and carrying the taken out seedlings, and a second seedling taking device for taking out the seedlings carried by the first seedling carrying device from the seedling carrying device at a predetermined position,
In a seedling transplanter equipped with a second conveyor device equipped with a seedling feeding belt that receives seedlings taken out by the seedling taking-out device and conveys them to the seedling taking position of the seedling-planting device, at the time of taking out seedlings by the second seedling taking-out device A seedling transplanter characterized in that a seedling pushing-down member for pushing down the leaf portion side of the seedling to be in a lowered posture is provided in the second seedling extracting device.

Therefore, in this seedling transplanting machine, the seedling pushing-down member provided in the second seedling taking-out device pushes down so that the leaf portion side of the seedling is in a lowered posture when the seedling is taken out by the second seedling taking-out device. As a result, when falling on the seedling feeding belt, the leaf part of the seedling comes into contact with the belt first and the floor part comes into contact later, and the leaf part that comes into contact with the belt first pops out backward. On the other hand, it works as a braking action, and prevents the seedlings on the seedling feeding belt from being displaced in the front and rear.

Therefore, the seedlings taken out by the second seedling take-out device are inherited at proper positions on the seedling feeding belt of the second conveying device without being displaced back and forth. It can be accurately transported to the seedling picking position of the planting device and can be planted properly.

[Brief description of drawings]

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

FIG. 2 is a sectional side view showing a part of a planting part.

FIG. 3 is a cross-sectional plan view showing a part of the first seedling extraction device.

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

FIG. 5 is a side view showing an operational configuration of the first seedling carrier device.

FIG. 6 is a cross-sectional plan view showing a transmission configuration of a planting part.

FIG. 7A is a side view showing a non-uniform speed transmission mechanism. (B) A graph showing a non-uniform speed transmission state of the non-uniform speed transmission mechanism.

FIG. 8 is a side view showing the operation of the seedling receiving member of the first seedling conveying device.

FIG. 9 is a partial cross-sectional side view showing a seedling retaining structure of the first seedling transport device.

FIG. 10 is a partial cross-sectional front view showing a seedling retaining structure of the first seedling carrier device.

11 (a) is a sectional side view taken along the line S1-S1 of FIG. (B) S2-S2 sectional side view of FIG.

FIG. 12 is a partial cross-sectional side view showing a seedling retaining operation of the first seedling transport device.

FIG. 13 is a partial cross-sectional side view showing a seedling retaining operation of the first seedling transport device.

FIG. 14 is a side view, partly in section, showing a seedling retaining operation of the first seedling carrier device.

FIG. 15 is a plan view of a seedling box.

FIG. 16 (a) is a side view of a seedling box. (B) A front view of a seedling box.

FIG. 17 is a sectional side view showing a part of a seedling box during raising seedlings.

FIG. 18 is a sectional side view showing a state in which seedlings are pushed out from a seedling box.

FIG. 19 (a) is a partial side view showing the configuration of the second seedling take-out device. (B) The perspective view which shows the one part structure of the 2nd seedling extraction device.

FIG. 20 (a) is a plan view showing the configuration of the second transfer device. (B) The rear view which shows the structure of a part of 2nd conveyance apparatus.

FIG. 21 (a) is a sectional side view showing a rotating state of the seedling supply shutter. (B) The top view which shows the seedling supply regulation state of a seedling supply shutter.

FIG. 22 is a side view showing a configuration of a warning device or a configuration of seedling supply regulation for an inappropriate seedling supply condition.

[Explanation of symbols]

 1: Seedling transplanter n: Seedling C: Seedling box C ': Pot 31: First seedling removing device 32: First seedling conveying device 33: Second seedling extracting device 34: Second conveying device 34a: Seedling feeding belt 35: Seedling implanting device 33g: Seedling pusher (seedling pusher)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideo Iseki, Hideo Iseki, No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefectural Engineering Department, Iseki Agricultural Machinery Co., Ltd. Inside the Technology Department (72) Inventor Satoshi Kato 1 Yakura, Tobe Town, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. Person Tatsuyuki Torizu No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture

Claims (1)

[Claims] 1. A first seedling take-out device for taking out seedlings from each pot from a seedling box in which a large number of pots for storing one seedling are arranged in a matrix, and a seedling taken out by the first seedling take-out device is conveyed. And a second seedling take-out device for taking out the seedlings being carried by the first seedling carrying device from the seedling carrying device at a predetermined position, and a seedling receiving the seedling taken out by the seedling taking device In a seedling transplanter equipped with a second transport device equipped with a seedling feeding belt that transports the seedlings to the seedling taking position of the planting device, when the seedlings are taken out by the second seedling removing device, the leaves of the seedlings are pushed down and pushed down into a posture. A seedling transplanter characterized in that the action body is provided in the second seedling removing device.