JPH0974842A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter, capable of suppressing the movement in the vertical directions of seedling boxes in a joining part and preventing seedlings from slipping off from the seedling box by installing regulating units capable of regulating the seedling boxes from shifting the positions in the direction crossing the conveying direction of the seedling boxes in the joining part, etc., where plural seedling box conveying passages are joined and united. SOLUTION: This seedling transplanter is obtained by installing plural seedling box conveying passages for conveying seedling boxes C fed from seedling box feeding parts (30a) in plural upper and lower stages to a common seedling box takeout position P and arranging regulating units 63 for regulating the positional shift of the seedling boxes C in the direction crossing the conveying direction in a joining part for joining and uniting the plural seedling conveying passages or its vicinity. Furthermore, a seedling box feeder 40 for feeding the seedling boxes C by one pot transverse row in a suitable timing is preferably provided near the seedling box takeout position P.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to load seedlings together with a seedling box into a planting section, transport the seedling box along a predetermined transport path, and take out the seedlings from the seedling box during the transport to produce a field. Seedling transplanter to be planted in.

[0002]

2. Description of the Related Art As a seedling transplanter of this type, as shown in FIG. 1, a seedling box supply section 30a for supplying a seedling box containing seedlings is provided in a plurality of stages (two stages in the illustrated example). The one configured so that the seedling boxes supplied from the stepped seedling box supply units 30a and 30a are conveyed to a common seedling take-out position through a plurality of seedling box conveying paths that merge and are integrated into one on the way. is there.

[0003]

As shown in FIG. 16, in the seedling transplanting machine having the above-mentioned configuration, the support rails 56, 56 are provided to support the seedling box C for the upper seedling box conveying path (first seedling box conveying path). The left and right edges are supported in a state of being sandwiched vertically, and the center portion on the bottom side of the seedling box C is supported from below by a positioning guide 57. Regarding the seedling box transportation path (second seedling box transportation path) in the lower stage, The support plate 58 supports the bottom surface of the seedling box C. However, at the confluence of both nursery box transport paths, the positioning guide 57 of the first nursery box transport path is interrupted in order to secure the nursery box path of the second nursery box transport path. The seedling box C, which is being transported along the path, is easily bent downward as shown in FIG. In addition, since the curvature of the merging portion is large in the second seedling box transport path, the seedling boxes being transported through the second seedling box transport path are shown in FIG.
As shown in (b), it is easily bent upward. As described above, there is a problem that the seedling box shakes in the vertical direction (the direction orthogonal to the conveying direction) at the confluence, and the seedling comes off from the seedling box at that time.

[0004]

In order to solve the above problems, the present invention has the following constitution. That is, the seedling transplanting machine according to the present invention is a seedling transplanting machine having a plurality of seedling box transport paths for transporting seedling boxes supplied from upper and lower stages of seedling box supply units to a common seedling extraction position, The feature of the present invention is that a regulating body for regulating the displacement of the seedling box in the direction intersecting with the conveying direction is provided at or near the confluence portion where the seedling box conveying paths of (1) merge and become one.

[0005]

1 to 11 show an example of a seedling transplanter according to the present invention. In this seedling transplanting machine 1, 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 as to be able to move up and down. A fertilizer hopper 5a of the fertilizer application device 5 and a fertilizer feeding device 5b for feeding fertilizer for each row are arranged. The 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 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 inside is transmitted to the front wheels 6.6 and the rear wheels 7.7 and is also transmitted to the planting portion 4 via the transmission shaft 9a, the intermediate gear case 9b, and the transmission shaft 9c. In addition, 12 in the figure is the front wheel 6.
A steering wheel for steering the steering wheel 6, a seat 13 on which the operator sits, and a step floor 14 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
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 planted transmission case 16 at the center, and the planting part 4 is mounted rotatably left and right with respect to the traveling direction. Further, a hydraulic cylinder 17 for driving the link device 3 is provided with its base portion side attached to the frame 8, and its piston rod side is integrally fixed downward from the base portion of the upper links 15a, 15a to the arm 15a. 'Is connected via a spring to the tip. 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.

Numerals 20 and 20 are spare seedling mounts provided on the left and right sides of the front part of the traveling vehicle body 2. Numerals 21 and 21 are line drawing markers, which are provided on the left and right sides of the front part of the machine body so that they can be switched up and down.

By the way, the seedling box C used in this seedling transplanting machine 1 is a flexible seedling box made of plastic,
The shape is as shown in FIGS. 14 and 15. That is, the small pots C ′ are arranged at predetermined intervals in the left, right, front and rear directions, the openings C′a are connected to each other, and the bottoms C′b. Further, square holes Cb for feeding seedling boxes are provided at left and right edge portions Ca and Ca along the longitudinal direction of the seedling box C in accordance with the longitudinal distance of the pots C ′. At the bottom C'b of each pot C '..., a cut C' through which a seedling push-out pin 31a described later can enter from the bottom side.
c is provided. Cc is a wide interval portion provided at the center in the left and right (transverse directions) toward the longitudinal direction. Each pot C 'is filled with floor soil, sowed, covered, and raised. Seedling box C grown in this way for each pot C '.
Is loaded into the planting section 4 together with the seedling box, and is pushed out from the bottom side to take out the seedling.

The planting section 4 has a 6-row planting structure, and a set of seedling box transfer devices 30, 30 and 30, a seedling take-out device 31, 31 and 31, and a first seedling transfer device 32 and 32 are divided into two sets.・ 32,
Seedling extracting device 33, 33, 33, and second seedling conveying device 34
34, 34, a seedling planting device 35 provided for each article, etc. are provided.

A plurality of seedling boxes C ... Are loaded in each seedling box transporting device 30, and the seedlings n are transferred from the pots C '... in two rows of the seedling boxes C transported to the seedling taking-out position P by the seedling taking-out device 31. … Are pushed out all at once. The extruded seedlings n ... Are held by the seedling holder 32a of the first seedling conveying device 32 and conveyed along a locus forming an arc in the lower front direction, and are transferred onto the second seedling conveying device 34 by the seedling extracting device 33. Be dropped out. Seedlings dropped out n
... are laterally divided into left and right halves by the second seedling transporting device 34 into the seedling collecting parts on the left and right sides thereof, and the seedlings n transported to the seedling collecting part are seedling planting devices 35 and 35 one by one. It is designed to be 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 seedling box carrying device 30 will be described in more detail. Seedling box carrier 30 ... 3 in total in the center and left and right
The body is provided. Each seedling box carrying device 30 joins the seedling box feeding parts 30a, 30a of two upper and lower stages provided at the upper part in a state of being slanted backward and the seedling box feeding paths from the two stages of seedling box feeding parts. Transport it downwards, and then continue to the front and upward U
It is equipped with a seedling box transporting section 30b that is curved in a letter shape, and subsequently an empty box transporting section 30c that extends upward to just below the seedling box feeding sections 30a, 30a, and discharges from there to the exit of the empty box transporting section 30c. There is provided an empty box housing frame 30d for housing a plurality of empty seedling boxes C ... Stacked vertically. In these seedling box carrying devices 30, the 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 seedling box carrying section 30b. The seedling box supply sections 30a, 30a ..., the empty box transfer section 30c, and the empty box storage frame 30d ... are supported by the supply section support frame 30e.

The upper and lower two-stage seedling box supply sections 30a, 30a are
It has a space where two seedling boxes can be placed in series with their longitudinal directions facing forward and backward. The seedling box supply unit 30a has a structure in which fences 52, 52 are provided upright on both left and right edges of the support plate 51, idle rollers 53 for smoothing the sliding of the seedling box are provided at appropriate places on the bottom surface, and the rear portion. There is provided a seedling box supply device 50, which will be described later, for forcibly sending the seedling box placed in the space on the rear side to the seedling box carrying section 30b. Seedling box pressing plates 54, 54 are fixed to the rear upper surface of the fences 52, 52 in a state of protruding inward, and prevent the seedling boxes placed in at least the space on the rear side from floating, thereby providing a seedling box supply device. By 50, it is surely sent to the seedling box carrying section 30b. Positioning guides 5 for engaging the wide spacing portions Cc of the seedling box and positioning the seedling box left and right are provided at the center of the bottom portion of the support plate 51.
5 are provided.

The seedling box supply device 50 has a wide feed roller 50a for feeding the seedling box by the protrusion formed on the outer periphery thereof engaging the gap between the pots C '... And C' ... of the seedling box C, Drive rollers 50b, 50b and pressing rollers 50c, 50c located downstream of the feed rollers and feeding the left and right edge portions Ca, Ca along the longitudinal direction of the seedling box C from above and below.
And The pressing rollers 50c and 50c are support arms 50d that are rotatable around the support shafts 50d 'and 50d'.
It is supported by 50d and is urged toward the drive rollers 50b, 50b by springs 50e, 50e.

The seedling box feeder 50 is a motor M1 (M2)
Driven by. The rotation of the motor output shaft Ma is transmitted to the shaft 50b ′ of the drive rollers 50b and 50b by the gears G1 and G2, and further transmitted from the shaft to the shaft 50a ′ of the feed roller 50a by the transmission belt 50f.
Incidentally, as shown in FIG. 6, the motor M1 (M2) has a motor drive shaft Mc rotated by a motor drive unit Mb.
The rotation of the worm is transmitted to the motor output shaft Ma by a worm gear device including a worm Md and a worm wheel Me. Due to the nature of the worm gear device, which can transmit from the worm to the worm wheel, but is difficult to transmit from the worm wheel to the worm, the seedling box sandwiched between the driving rollers 50b and 50b and the pressing rollers 50c and 50c when the motor is stopped. Does not slide down under its own weight.

As described above, since the drive rollers 50b and 50b are in the state of being rotationally restrained when the motor is stopped,
As shown in FIG. 7A, the seedling box cannot be pulled out when the seedling box is sandwiched between the driving rollers 50b and 50b and the pressing rollers 50c and 50c. Therefore, when taking out the seedling box placed in the space on the rear side of the seedling box supply unit 30a at the end of work, etc., as shown in FIG. 7 (b),
The presser rollers 50c and 50c are rotated forward to release the seedling box from being pinched by the drive rollers 50b and 50b and the presser rollers 50c and 50c. In this state, the springs 50e, 50e cross the fulcrum, and the pressing rollers 50c, 5e
Since 0c is stable when it contacts the upper surface of the seedling box C, the seedling box C can be easily taken out with both hands. After taking out the seedling box C, as shown in FIG. 7C, the pressing rollers 50c and 50e are operated by the action of the springs 50e and 50e.
c further rotates downward, and the path of the seedling box is blocked. Therefore, when resuming the work, even when trying to load the seedling box into the seedling box supply unit 30a, the pressing roller 50c.
0c becomes an obstacle and the seedling box cannot be loaded into the seedling box supply portion 30a, and the pressing rollers 50c and 50c are not returned to the normal seedling box feeding position. As a result, it is possible to start the planting work with the seedling box feeding device 50 in a defective state, and prevent seedling planting failure due to improper feeding of the seedling box.

FIG. 12 shows a different example of the structure for preventing forgetting to return the pressing roller after taking out the seedling box. In this example, stopper plates 50g and 50g are rotatably attached to the intermediate portions of the support arms 50d and 50d, and the stopper plates 50g and 50g are coil springs 50h and 50h.
The support arm is urged toward the rotation fulcrum side at 50 h. When the pressing rollers 50c, 50c are rotated to the front side when taking out the seedling box, if the seedling box C is present, the stopper plates 50g, 50g escape upward as shown in FIG. 12 (b) and the seedling box C disappears. As shown in FIG. 12C, the stopper plates 50g and 50g rotate downward to block the path of the seedling box. As a result, similarly to the above, it is noticed that the presser rollers 50c, 50c are not returned to the normal seedling box feeding position during the seedling supply.

FIG. 13 shows a further different example of the configuration for preventing forgetting to return the pressing roller after taking out the seedling box. In this example, the driving rollers 50b and 50b and the pressing roller 50 are
The support arm 5 is provided on the upper side of the seedling holding position by c.50c.
Hooks 50j and 50j with which the fixed hook pins 50i and 50i engage with 0d and 50d are rotatably provided, and when these hook pins 50i and 50i are located on the lower side, the turning plates 50k and 50k that project to the seedling feeding path are provided. Is attached. Normally, as shown in FIG. 13 (a), the rotating plates 50k, 50k are located above the seedling box carrying path by the action of the coil springs 50l, 50l.
When hook pins 50i and 50i are engaged with 0j, as shown in FIG.
As shown in FIG. 3 (b), the rotating plates 50k and 50k project into the seedling box transport path, and when the seedling box C is replenished in that state, FIG.
As shown in (c), the seedling box C pushes the rotating plates 50k and 50k, so that the hooks 50j and 50j and the hook pins 50i.
・ 5ik is disengaged, and the pressing rollers 50c and 50c automatically return to the seedling box feeding position by the action of the springs 50e and 50e.

The seedling box feeding section 30b is the seedling box feeding section 3 in the upper stage.
0a (1) has a first seedling box carrying path for carrying seedling boxes and a lower seedling box supplying section 30a (2) has a second seedling box carrying path for carrying seedling boxes. The two seedling box transport paths merge on the way and are integrated into one to reach the seedling take-out position P. The seedling boxes that are being transported through both seedling box transportation paths are supported as follows.

Regarding the seedling box which is being transported through the first seedling box transporting path, the edge portions Ca and Ca are guided and supported so as to be sandwiched between the support rails 56 and 56 from above and below, and the portion from the start end to the merging portion is a positioning guide. 57 supports the lower surface of the wide interval portion Cc, and the support plate 58 supports the bottom portion of the pot C ′ ... The portions 56a and 56a located at the confluence of the support rails 56 and 56 do not interfere with the path of the seedling boxes that are transported through the second seedling box transport path, so that the edge portions Ca and
It is designed to contact only the upper surface side of Ca. Also,
A first presser bar 59 is provided in the rear left and right center of the first nursery box transport path (on the upper surface side of the nursery box) so that the nursery box being transported is prevented from jumping backward. . The portion 59a near the seedling take-out position P of the first presser bar 59 is curved rearward so that there is a large space between the first presser bar 59 and the seedling box, and up to that point, between the upper surface of the seedling box and the first presser bar 59. Even if the seedling leaves are sandwiched between the seedlings, when the seedling box comes to the position of the curved portion 59a, the leaves are restored to the normal posture, and there is no obstacle when taking out the seedlings from the pot at the seedling picking position P. There is.

Regarding the seedling box which is being transported through the second seedling box transporting path, the bottom portion of the pots C '... Is supported by the support plate 58. Further, a second presser bar 60 is provided above the right and left center of the second seedling box transportation path (upper side of the seedling box) so as to stop the lifting movement of the seedling box during transportation. The support plate 58 is continuously provided from the starting end of the second seedling box transporting path to the seedling take-out position P, but the second pressing rod 60 is from the starting end to immediately before the merging portion and has a role after the merging portion. It is taken over by the first presser bar 59.

The positioning guide 57 and the second presser bar 60
Are provided so as to be rotated by the motor M3 with the base of the positioning guide 57 as a fulcrum (62). When the seedling box is being transported through the first seedling box transport path, the positioning guide 57 causes the wide spacing portion Cc of the seedling boxes that is being transported through the first seedling box transport path as shown in FIGS. 8 and 10 (a). Both 57 and 60 rotate upward so as to support them from the lower surface side. In addition, when the seedling box is being transported through the second seedling box transporting path, FIG. 9 and FIG.
As shown in, both 57 and 60 rotate downward so that the second presser bar 60 is located above the second seedling box transport path. In this way, the positioning guide 57 and the second presser bar 60 can be switched up and down, so that both 57 and 60 can be provided up to immediately before the confluence portion, and the nursery box support and the raising of the nursery box can also be performed at the confluence portion. Prevention is working effectively.

Further, in the vicinity of the confluence of the first nursery box transport path and the second nursery box transport path, as a regulating body for regulating the displacement of the nursery box in the direction intersecting the transport direction at the confluence, Sprocket wheels 63, 63 having claws that engage with the feeding square holes Cb ... Of the seedling box are formed on the outer peripheral portion.
By engaging the claws of the sprocket wheels 63, 63 with the square holes Cb of the seedling box being transported, the left and right positions of the left and right edge portions Ca, Ca of the seedling box C are regulated, and the seedling box C is moved to the left and right. Since it is stretched in a straight line, the state shown in FIGS.
As shown in (3), the seedling box C does not bend and the seedling box does not shake in the direction intersecting the transport direction. As a result, seedlings are prevented from falling out of the seedling box C, and reliable seedling planting can be performed.

In the vicinity of the seedling take-out position P, there is provided a seedling box feeding device 40 for locking the seedling boxes C at the seedling taking-out position P and sending the seedling boxes in horizontal rows of pots at an appropriate timing. The seedling box feeding device 40 includes feed claws 40a and 40a that reciprocate along the seedling box transport path, and locking claws 40b and 40b that are engaged and disengaged in conjunction with the feed claws 40a and 40a. Feeding claw 40
Square holes Cb for feeding seedling boxes provided in the edge portions Ca, Ca of the seedling boxes C located in the grooves by the claw portions of a. 40a entering into the openings provided in the left and right transport guide portions 30b '. From the state of being engaged with ..., The feed claw moves upward, rides over the next square hole Cb, is engaged, and moves downward again, so that the pots C ′ ... There is. The seedling box feeding device 40 can also be fed and operated by manually swinging the seedling box feeding manual lever 41.

At the seedling take-out position P, the feed claws 40a
40a and locking claws 40b and 40b are square holes Cb, C of the seedling box.
Brake members 40c, 40c made of leaf springs are provided to prevent the seedling box from falling due to its own weight when it is in a state of coming out of b. Furthermore, just above the seedling take-out position P,
The locking claws 40b and 40b project in the seedling box transport path (when there is no seedling box in the seedling box transport path) in conjunction with the locking claws 40b and 40b coming out of the square holes Cb, Cb of the seedling box, and are supplied from the seedling box supply unit 30a. Shut-off claws 40d and 40d that temporarily receive the seedling box are provided.

Limit switches SW1 to SW7 for detecting the presence / absence of a seedling box are provided at appropriate places in the upper and lower seedling box feeding sections 30a and 30a and the seedling box feeding section 30b, and the seedling box feeding is performed based on the detection results of these switches. The drive of the motors M1 and M2 of the devices 50 and 50 is controlled. As a result, the flow of seedling boxes is as follows.

First, the case of loading an empty seedling box carrier 30 with a seedling box will be described. Upper seedling box supply section 30a
The first seedling box loaded in (1) is the seedling box supply device 50.
By (1), it is sent out to the seedling box carrying section 30b and dropped to the seedling taking-out position P by its own weight. Upper seedling box supply section 30a
The second seedling box loaded in (1) is received by the seedling box supply device 50 (1) in the stopped state, and the seedling box supply unit 30
It is held at the rear of a (1). Upper seedling box supply section 30a
The third seedling box loaded in (1) is held in front of the second seedling box. The fourth seedling box loaded in the lower seedling box supply unit 30a (2) is the seedling box supply device 5 in the stopped state.
It is received by 0 (2) and is held at the rear of the seedling box supply unit 30a (2). The fifth seedling box loaded in the lower seedling box supply unit 30a (2) is held in front of the fourth seedling box. With this, the seedling box transporting section 30b and the upper and lower seedling box supplying sections 3
A total of 5 seedling boxes have been loaded into 0a (1) and 30a (2). In this state, operate each part of the planting part 4,
Start seedling transplant work.

Next, a case where the seedling transplanting operation is performed from the above-mentioned seedling box full state will be described. When you start seedling transplant work,
The seedling box feeder 40 conveys the first seedling boxes by the interval between the pots. Then, at an appropriate timing, the second seedling box is sent to the seedling box transport unit 30b and continues to the first seedling box. Along with this, the third seedling box is the seedling box supply section 30a (1).
It slides down to the rear of the car. When the work was further continued and the seedling transplantation of the second seedling box was started, 3
The second seedling box is sent to the seedling box transport unit 30b. When the seedling transplantation of the third seedling box is started, the seedling boxes of the seedling box feeding section 30a (2) in the lower stage are supplied to the seedling box transporting section 30b one by one in the same manner as described above. The empty seedling box after the seedlings are taken out passes through the empty box transport section 30c and the empty box collection section 30d.
Will be collected.

When the seedling box slides down the seedling box supply section 30a and is sandwiched by the driving rollers 50b and 50b and the holding rollers 50c and 50c, the feeding speed of the seedling box supply device 50 is increased,
After a certain period of time, control the feed speed to return to the steady speed,
Since the seedling box slides faster than the feeding speed of the seedling box supply device 50, the seedling box is driven by the driving roller 50b.
-Reduces the impact when it is sandwiched between 50b and the press rollers 50c and 50c.

In practice, when the switch SW1 (or SW5) provided immediately in front of the seedling box supply device 50 is turned on, the rotation speed of the drive rollers 50b and 50b is increased so that it is provided immediately after the seedling box supply device 50. Switch SW2 (or SW
When 6) is turned on, the motor M1 (or M2) is controlled so that the rotation speed of the drive rollers 50b and 50b is returned to the steady speed. However, switch SW1 (or SW5)
Switch is on, switch SW2 (or SW6) is on
When it changes from OFF to OFF, the preceding seedling box is sent to the seedling box transport section 30b and the succeeding seedling box is driven by the drive rollers 50b.5.
Since it is in a state of waiting before 0b, the rotation speed of the drive rollers 50b and 50b is not increased and remains at the steady speed.

When the seedling boxes sandwiched between the driving rollers 50b and 50b and the pressing rollers 50c and 50c are released, the feeding speed of the seedling box feeding device 50 is slightly slowed down so that the seedling box hits the preceding seedling box. The shock of time is eased. At the steady speed, the time for which the driving rollers 50b and 50b and the pressing rollers 50c and 50c hold the seedling box is about 3 seconds. Therefore, for example, the feeding speed is 2.5 seconds after the seedling box is held by the rollers. Control should be slowed down.

Further, if stays 50m and 50m for supporting the whole seedling box supplying device 50 are provided slidably in the front and rear and a buffer structure is pulled forward by springs 50n and 50n, the preceding seedling box has a switch SW2 ( Or S
W6) is not lowered to the position to push the seedling box feeding device 5
Even when 0 is not operating, it is possible to mitigate the impact when the supplied seedling box hits each roller of the seedling box supply device 50 when the seedling box is supplied.

In each of the limit switches SW1 to SW7 used for the seedling box transfer control, the detection shaft projects from the side surface of the case housing the switch body, and the actuator is attached to the detection shaft. The part where the detection object hits does not overlap the case in a plan view.

Specifically, it is as shown in FIG. Reference numeral 70 in the figure is a switch body, which is housed in the lower portion of the closed case 71. A detection shaft 72 is provided on the top of the case 71.
Is provided horizontally, and an arm 73 integral with the detection shaft is in contact with the contact opening / closing body 70a of the switch body 70. This arm 73 is switched off by the spring 74
It is urged in the direction of (or ON). Detection axis 7
One end of 2 projects outside the case, and the actuator 75 is attached to the projecting portion. The actuator 75 is extended in the conveying direction of the seedling box C, and the portion on the tip side from the intermediate portion is curved upward so that the seedling box support plate 51 is formed.
It projects from the hole 51a formed in the above into the seedling box carrying path. Then, a seedling box receiving plate 75a for receiving the seedling box C which is being transported through the seedling box transport path is fixed to the curved portion. The seedling box receiving plate 75a, which is a portion against which the seedling box (object to be detected) hits, is provided at a position distant from the base of the actuator 75 to some extent so as not to overlap the case 71 in a plan view. Although FIG. 11 shows the switches SW1 or SW5 provided in the seedling box supply unit 30a, the other switches are also so arranged that the seedling box receiving plate 65a does not overlap with the case 71 in a plan view in the same manner as above. Has become.

When the seedling box C pushes the seedling box receiving plate 75a, the actuator 75 rotates downward, and the arm 73 pushes the contact opening / closing body 70a to turn the switch ON (or OFF). When seedling box C passes, spring 7
The actuator 75 returns to the original position by the action of 4, and the switch is turned off (or turned on). As described above, since the seedling box receiving plate 75a does not overlap the case 71 in a plan view,
Even if the mud attached to the seedling box falls when the seedling box C hits the seedling box receiving plate 75a, the mud does not adhere to the case 71. Therefore, it is possible to prevent the dirt from getting caught between the case 71 and the actuator 75 and the actuator 75 from not operating. Moreover, since the opening connecting the inside of the case 71 and the outside of the case 71 is only the hole through which the detection shaft 72, which is the rotation shaft, is inserted, the sealing property inside the case 71 is good.

[0037]

As described above, the seedling transplanting machine according to the present invention is provided with a regulating member for regulating the displacement of the seedling box in the direction intersecting the carrying direction at or near the confluence of the seedling box carrying path. By installing the seedlings, the vertical movement of the seedling box at the confluence was prevented, and the seedlings could not come off from the seedling box.

[Brief description of drawings]

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

FIG. 2 is a side view of a seedling box carrying device.

FIG. 3 is a plan view of a seedling box carrying device.

4A is a sectional view taken along line S1-S1 of FIG. 3, and FIG. 4B is a sectional view taken along line S2-S2 of FIG.

FIG. 5 is a side sectional view of the seedling box supply device.

FIG. 6 is a diagram showing an internal structure of a motor.

7 (a), (b) and (c) are diagrams showing the operation at the time of taking out the seedling box.

FIG. 8 is a side cross-sectional view of a seedling box carrying section showing a state where the first seedling box carrying path is carrying the seedling box.

FIG. 9 is a side cross-sectional view of a seedling box carrying section showing a state where the second seedling box carrying path is carrying the seedling box.

10 is a sectional view taken along line S-S of FIG. 8 and FIG.
FIG. 6 is a sectional view taken along line S-S of FIG.

FIG. 11 is a plan view (a) and a side sectional view (b) of the switch.

12 (a), (b), and (c) are diagrams showing operations when taking out seedling boxes of different examples.

13 (a), (b), and (c) are diagrams showing an operation at the time of taking out the seedling box of still another example.

FIG. 14 is a plan view of a seedling box.

FIG. 15 is (a) a side view and (b) a front view of a seedling box.

FIG. 16 is a sectional view of a seedling box carrying section of a conventional seedling transplanting machine.

FIG. 17A is a cross-sectional view of the confluence portion when the first seedling box transport path is transporting the seedling boxes, and FIG. 17B is a cross-sectional view of the merge section when the second seedling box transport path is transporting the seedling boxes.

[Explanation of Codes] C Seedling box 1 Seedling transplanter 2 Traveling vehicle 3 Link device 4 Planting section 30 Seedling box transfer device 30a Seedling box supply section 30b Seedling box transfer section 56 Support rail 57 Positioning guide 58 Support plate 63 Sprocket wheel ( (Regulatory body)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideo Iseki, Hideo Iseki, No. 1 Hachikura, Tobe, Iyo-gun, Ehime Prefecture, Engineering Department, Iseki Agricultural Machinery Co., Ltd. In-house (72) Inventor Tatsumi Kaneko 1 Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture

Claims (1)

[Claims] 1. A seedling transplanter equipped with a plurality of seedling box transport paths for transporting seedling boxes supplied from upper and lower stages of seedling box supply parts to a common seedling take-out position, wherein the plurality of seedling box transport paths are provided. A seedling transplanting machine, which is provided with a restricting body for restricting displacement of a seedling box in a direction intersecting with a transport direction at or near a confluent portion where the seedlings are merged into one.