JPH11253016A - Seedling distributor loaded on seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling distributor loaded on a seedling transplanter, capable of alternately and surely distributing transplantation seedlings into two postdistribution branched transfer routes and capable of preventing the error operation of a distribution member due to the adhesion of the clay mass of a crop field. SOLUTION: This seedling distributor loaded on a seedling transplanter is provided with a distribution member 16, a seedling detection means 19 and a swinging means D. The distribution member 16 is disposed between a transfer route C before distribution and two branched transfer routes E, E after distribution, and is swung so that a non-distributed transplantation seedling P' transferred through the transfer route C is distributed into one of the branched transfer routes E, E. The seedling detection means 19 is used for detecting the transplantation seedling P distributed with the swinging member 16. The swinging means D swings the distribution member 16 so that the non-distributed transplantation seedling P' in the order next to the distributed transplantation seedling P is distributed into the branched transfer route E different from the branched transfer route E in which the distributed transplantation seedling P has been distributed, when the seedling detection sensors 19 detect the distributed transplantation seedling P.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method in which seedlings for transplantation received in one seedling receiving device are alternately distributed to a pair of right and left seedling planting devices, and the transplanted seedlings are planted in two rows in a field. The present invention relates to a seedling sorting device mounted on a seedling transplanter.

[0002]

2. Description of the Related Art Conventionally, a seedling transplanter in which seedlings for transplanting are planted in two rows in a field is provided with a seedling receiving device, a left and right one.
A pair of seedling planting devices and a seedling sorting device that alternately sorts transplanted seedlings sent from the seedling receiving device to a pair of right and left seedling planting devices are mounted.

In the conventional seedling sorting apparatus, a pre-sorting transfer path formed by a pair of left and right upper belt conveyors is opposed to a pair of the left and right upper belt conveyors and the left and right pair of lower belt conveyors. The seedling for transplanting arranged between the two post-sorting branch transfer paths, the sending end of the pre-sorting transfer path, and the receiving end of the two post-sorting branch transfer paths, and sent out of the pre-sorting transfer path. And a distribution unit for alternately distributing the data to two post-distribution branch transfer paths.

[0004] An optical sensor for detecting transplanted seedlings to be transferred through the transfer path before sorting is arranged. Each time the optical sensor detects a transplanted seedling, the detected transplanted seedling is transferred to the above-mentioned transfer path. The distribution unit alternately distributes the two post-distribution branch transfer paths. Further, the seedlings for transplanting distributed to the branch transfer paths after the distribution are planted in the field by the seedling planting devices respectively arranged at the sending ends of the branch transfer paths after the distribution.

[0005]

However, in the above-mentioned conventional seedling sorting apparatus, the seedling for transplanting which is being transferred on the transfer path before sorting, that is, the seedling for transplanting before being sorted by the sorting unit, is detected. Since the detected transplanting seedlings were alternately distributed to the two distributed branch transfer paths by the distribution unit, it was determined whether or not the distributed transplanted seedlings were reliably and alternately transferred to the branched transfer path after the distribution. There is a disadvantage that it cannot be confirmed. Furthermore, since an optical sensor is used to detect the seedlings for transplantation, there is a possibility that erroneous operation of the sorting unit may be induced by the attachment of soil or the like in the field to the sensor.

According to the present invention, the seedlings for transplantation can be reliably and alternately transferred to the branch transfer path after two sorts,
In addition, an object of the present invention is to provide a seedling sorting device mounted on a seedling transplanting machine that does not cause a malfunction of the sorting unit due to the adhesion of soil or the like in a field.

[0007]

According to the present invention, there is provided a seedling sorting apparatus mounted on a transplanter according to the present invention, comprising: a pre-sorting transfer path C formed by a pair of left and right upper belt conveyors 3 and 4 facing each other; The transfer delivered from the pre-sorting transfer path C between the left and right two post-sorting branch transfer paths E, E formed by opposing the upper belt conveyors 3, 4 and the pair of left and right lower belt conveyors 8, 9 to face each other. A distribution unit 16 for distributing the seedlings P 'to the left and right two post-distribution branch transfer paths E, E is provided, and the seedlings for detecting the transplanting seedlings P after the distribution by the distribution unit 16 are detected. A detection means 19 is provided, and when the seedling P for distribution is detected by the seedling detection means 19, the seedling P ′ for transplantation before distribution in the next order of the transplanted seedling P after distribution is replaced with the seedling P ′ for distribution after distribution. Post-sorting branch transfer path to which transplanted seedlings P are sorted And it is provided with a swinging means D for swinging the sorting unit 16 so as to distribute a different distribution after the branch transfer path E is.

[0008] The seedling detecting means 19, for example, comes into direct contact with the transferred seedlings P, and
Of the contact type for detecting the
6, the position for detecting the transplanting seedling immediately after the sorting, specifically, the above-mentioned two sorted branch transfer paths D, D
At the receiving end.

In the contact type seedling detecting means, one end contacts the seedling for transplant transferred to the receiving end of one of the two distributed branch transfer paths D, D. Further, the seedling detection arm 19a having a length such that the other end thereof comes into contact with the transplanted seedling transferred to the receiving end of the other divided branch transfer path D is swung according to the transfer of the transplanted seedling that has come into contact therewith. It is formed on the arm support shaft 20 which is formed.

The swinging means D includes a seedling detection arm 19a.
The arm support shaft 20 on which is formed and the body support shaft 18 on which the distributing body 16 is formed are connected by a link member 22 so as to be swingable, and a seedling detection is provided between the arm support shaft 20 and the board 17b. The spring member 21 is stretched so as to hold the swing position of the arm 19a.

[0011]

Embodiments of the present invention will be described with reference to the drawings. The seedling sorting device according to the present invention includes a seedling receiving device A including a belt conveyor 1 and a pair of right and left seedling planting devices B formed by superimposing rubber rotary disks 2 and 2.
B and a transfer path C before seedling distribution, a swing mechanism D as a swinging means, and two left and right branch transfer paths E and E (FIG. 1).

Reference numerals 3 and 4 denote belt rollers 3 arranged vertically.
a pair of left and right upper belt conveyors in which belts 5 and 6 are respectively wound in two front and rear rows around a and 3b, 4a and 4b, and belt rollers 3c and 4c arranged outside and below the belt rollers. A vertical belt portion 5 'stretched between 3a and 3b and a vertical belt portion 6' stretched between the belt rollers 4a and 4b are opposed to each other to form a pre-sorting transfer path C.

The upper end of the vertical belt portion 5 'of the belt 5 is opposed to the front side of the sending end of the seedling receiving device A, and the upper end of the vertical belt portion 6' of the belt 6 is located below the sending end of the seedling receiving device A. Facing the side.

The transplanting seedlings P that the seedling receiving device A sends out from the space between the presser ring 7 and the belt 5 at regular intervals.
Is transferred to the pre-sorting transfer path C formed by the vertical belt portions 5 'and 6'.

8, 9 are the upper belt conveyors 3, 4
Are arranged near the lower center of the belt rollers 3b and 4b of
Belt rollers 8a, 9 having small diameter shafts 8a ', 9a'
a, the belt rollers 3c of the upper belt conveyors 3, 4;
Belt rollers 8 arranged one above the other below 4c
This is a pair of left and right lower belt conveyors in which belts 10 and 11 are wound in two front and rear rows, respectively, and symmetrically laid between b and 8c and 9b and 9c.

Reference numerals 12 and 13 denote belt rollers 8b and 8c,
Vertical belt sections 8 ', 9' stretched between 9b and 9c
Is a pair of outer belt conveyors in which belts 14 and 15 are wound between belt rollers 12a and 12b and belt rollers 13a and 13b which are vertically arranged so as to face the outside of the belt conveyor.

That is, the upper belt conveyor 3 and the lower belt conveyor 8, the lower belt conveyor 8 and the outer belt conveyor 12, the upper belt conveyor 4 and the lower belt conveyor 9, and the lower belt conveyor 9 The post-sorting branch transfer paths E, E are formed in each of the opposed belt portions of the outer belt conveyor 13.

The post-sorting branch transfer paths E, E are positioned below the belt rollers 3b, 4b such that their receiving ends face the sending ends of the pre-sorting transfer path C, respectively. The sending end is located opposite to the receiving portion of the left and right seedling planting apparatuses B, B.

Reference numeral 16 denotes a distributing unit for distributing the untransferred seedling P 'sent from the pre-distribution transfer path C to the left and right two post-distribution branch transfer paths E, E, which is the pre-distribution transfer path C. 2 and a receiving end of the post-distribution branch transfer paths E, E, and are driven to swing left and right by a swing mechanism D, which will be described in detail later (FIG. 2). 4).

The distributing member 16 includes substrates 17a, 17
The body support shaft 18 is swingably supported at the distal end of the body support shaft 18, and has a connection piece 18 a protruding from the base end of the body support shaft 18.

Next, the structure of the swing mechanism D will be described. Reference numeral 19 denotes contact-type seedling detection means for detecting the seedlings P for transplanting after the sorting, which are transferred to the two post-sorting branch transfer paths E, E, and are arranged at the receiving ends of these post-sorting branch transfer paths E, E. ing. The seedling detecting means 19 is of a T-shape in which a support leg 19b perpendicular to the central lower surface of a seedling detection arm 19a is disposed.
9b, it is fixed to an arm support shaft 20, which is swingably supported by the substrates 17a, 17b.

The seedling detection arm 19a has two ends.
The belts 10, 10, 11, 11 are arranged so as to protrude into the two post-distribution branch transfer paths E, E, and one end of the two post-distribution branch transfer paths E, E. Abuts on the seedling P for transfer transferred to the receiving end of the branching transfer path E after one of the above, and has the other end transferred after the transfer to the receiving end of the branching transfer path E after the other. It is formed to have a length in contact with the seedling P for transplantation. In other words, the single seedling detection arm 19a can detect the transplanted seedlings P transferred to the receiving ends of the two post-sorting branch transfer paths E, E, respectively.

When the arm support shaft 20 is swung left and right by a required angle, the seedling detection arm 19a of the seedling detection means 19 is disposed at the receiving end of the two post-sorting branch transfer paths E, E. Shaft 8 of the belt rollers 8a, 9a
a 'and 9a' are disposed below the body support shaft 18 so as to abut against the a 'and 9a'.

At the base end of the arm support shaft 20, a spring engaging piece 20a is parallel to the support leg 19b of the seedling detecting means 19, and a link connecting piece 20b is connected to the seedling detecting arm 19a of the seedling detecting means 19. They are formed in parallel.

A spring locking tongue 17 is provided on the substrate 17b.
c protrudes horizontally below the arm support shaft 20, and a spring engaging piece 2 of the arm support shaft 20.
0a and a spring member 21 such as a coil spring.
Is stretched.

The spring member 21 is connected to the seedling detecting means 19.
Is held at a swinging position where one end of the seedling detection arm 19a is in contact with the shaft 8a 'of the belt roller 8a, or at a swinging position where the other end is in contact with the shaft 9a' of the belt roller 9a. It is. The spring member is not limited to the coil type, but may be a torsion type or a rubber type.

A link member 22 is connected between the connection piece 18a of the body support shaft 18 and the link connection piece 20b of the arm support shaft 20, and the distribution body 16 swings together with the arm support shaft 20. By this swinging, the seedlings P 'for transplantation, which have been sent from the pre-sorting transfer path C before sorting, can be sorted to one of the two post-sorting branch transfer paths E, E.

The swing angle of the sorting unit 16 is
a of the upper end of the link member 22 connected to the
, The distance L2 between the lower end of the link member 22 connected to the connecting piece 20b and the sorting unit 16, and the length of the link member 22 as appropriate.

Next, the distributing operation of the two transplanting seedlings P 'and P before and after the distribution, which is transferred before and after the distributing unit 16 is described.

First, as shown in FIG.
9a contacts one end of the shaft 8a 'of the belt roller 8a,
It is assumed that the sorting unit 16 is at the swing position on the left side. At this time, the seedlings P ′ for transplantation before being distributed sent from the pre-sorting transfer path C are distributed to the right distribution branch transfer path E by the distribution part 16 that is pivotally positioned on the left side.
The transplanted seedlings P distributed to the right distribution branch transfer path E are transferred so as to contact the other end of the seedling detection arm 19a and push down the other end.

As shown in FIG. 6, the seedling detecting means 19 separates one end of the seedling detecting arm 19a from the shaft 8a 'of the belt roller 8a and the other end of the arm 19a contacts the shaft 9a' of the belt roller 9a. Swings so that it touches, and
6 also swings to the right. Therefore, the transplanting seedlings P ′ before the distribution in the next order are distributed to the distribution / transfer path E on the left side by the distribution unit 16 oscillating on the right side.

It is assumed that the other end of the seedling detection arm 19a is in contact with the shaft 9a 'of the belt roller 9a, and the distribution unit 16 is also at the right swing position. At this time, the transplanting seedlings P ′ before distribution sent from the pre-sorting transfer path C are the sorting parts 1
6, the packet is distributed to the distribution / transfer path E on the left side. The transplanted seedlings P distributed to the left distribution branch transfer path E are transferred in such a manner as to come into contact with one end of the seedling detection arm 19a and push down the one end.

Thus, the seedling detecting means 19 swings so that the other end of the seedling detecting arm 19a is separated from the shaft 9a 'of the belt roller 9a, that is, one end of the arm 19a contacts the belt roller 8a 8a'. It moves, and the sorting unit 16
Also swings to the left. Therefore, the seedlings P ′ for transplantation before the next sorting are sorted to the right sorting branch transfer path E by the sorting unit 16 swinging to the left.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the invention. That is, the above-described seedling sorting apparatus has been described with respect to a configuration in which the seedlings for transplantation transferred to the receiving ends of the two post-sorting branch transfer paths are detected. You may make it detect the seedling for transplantation before it is transferred to the receiving end of the branch transfer path after two sorting.

Further, the single seedling detecting means for detecting the seedlings for transplantation after sorting is arranged at the receiving ends of the two sorting branch transfer paths. Seedling detection means are arranged for each of them.
The sorting unit may be swung according to the detection results of the two seedling detecting means.

Further, the swinging means having a structure in which the seedling detecting means and the distributing unit are mechanically linked by a link member has been described, but the swinging position of the arm supporting shaft for supporting the seedling detecting means is electrically controlled. And the distributing unit may be rocked according to the detected rocking position.

[0037]

According to the first to sixth aspects of the present invention, the seedlings for transplantation after being sorted by the sorting unit are detected, and the sorting unit is swung by this detection. After the two distributions, the data can be alternately and reliably transferred to the branch transfer path.

In addition to the common effects obtained by the above-described inventions, the following effects can be obtained by the inventions described in the respective claims. According to the invention of claims 2 and 3,
Since the transplanting seedlings immediately after being sorted by the sorting unit can be detected, it is possible to easily cope with a case where the interval between the transplanting seedlings before and after the sorting is short.

According to the fourth aspect of the present invention, since a contact-type detecting means for detecting the seedling for transplantation by directly contacting the seedling for transplantation is adopted as the seedling detecting means, soil clumps and the like are attached. In this case as well, it is possible to reliably detect the seedling for transplantation.

According to the fifth aspect of the present invention, the single seedling detecting means can detect the sorted transplanted seedlings transferred to the receiving ends of the two sorted branch transfer paths. In addition, since the seedling detection arm and the sorting unit swing according to the transfer of the transplanting seedling that comes into contact with the seedling detection arm,
There is no need to provide a drive source, a control circuit, or the like for driving the distribution unit, and the cost can be reduced.

According to the sixth aspect of the present invention, since the seedling detecting arm and the sorting unit are swingably connected to each other by the link member, the structure can be simplified, so that there are few failures and the earth mass is reduced. Even when such a substance adheres, a reliable operation can be performed.

[Brief description of the drawings]

FIG. 1 is a front view of a seedling sorting device according to the present invention.

FIG. 2 is a partially enlarged front view centering on the sorting unit of the above.

FIG. 3 is a front view of the seedling sorting mechanism according to the first embodiment.

FIG. 4 is a side view thereof.

FIG. 5 is a front view showing a swinging state of the sorting unit and the seedling detecting means when the swinging position is at the left side.

FIG. 6 is a front view showing the swinging state of the sorting unit and the seedling detecting means when they are swinging to the right.

[Explanation of symbols]

 3, 4 Upper belt conveyor 8, 9 Lower belt conveyor 16 Sorting unit 17a, 17b Substrate 18 Part support shaft 19 Seedling detection means 19a Seedling detection arm 20 Arm support shaft 21 Spring member 22 Link member C Transfer path before sorting D Swinging mechanism as swinging means E Branching transfer path after sorting P Seedling for transplanting after sorting P 'Seedling for transplanting before sorting

Claims (6)

[Claims] 1. A pre-sorting transfer path formed by opposing a pair of left and right upper belt conveyors, and two left and right pairs formed by opposing a pair of the left and right upper belt conveyors and a pair of left and right lower belt conveyors. After the distribution,
Transfer the seedlings for transfer sent from the transfer path before sorting
In a seedling sorting device mounted on a seedling transplanter, which is provided with a sorting unit for sorting to two sorting and branching transfer paths, provided with seedling detecting means for detecting transplanting seedlings after sorting by the sorting unit. When the seedling for transplantation after sorting is detected by the seedling detection means, the seedling for transplanting before sorting in the next rank of the seedling for transplanting after sorting is a post-sorting branch transfer path to which the seedling for transplanting after sorting is sorted. A seedling distributing apparatus, further comprising a swinging means for swinging the distributing part so as to be distributed to another branch transfer path after distribution. 2. The seedling sorting apparatus according to claim 1, wherein the seedling detecting means is arranged at a position for detecting a transplanting seedling immediately after being sorted by the sorting unit. 3. The seedling detecting means is arranged at a receiving end of the two post-sorting branch transfer paths.
A seedling sorter as described. 4. The seedling sorting apparatus according to claim 1, wherein said seedling detecting means is of a contact type which detects the transplanted seedling by directly contacting the transferred transplanted seedling. 5. The seedling detecting means, one end of which contacts the transplanting seedling transferred to the receiving end of one of the two post-sorting branch transfer paths, and the other end thereof. A seedling detection arm having a length in contact with the transplanted seedling transferred to the receiving end of the branch transfer path after the other sorting, is formed on an arm support shaft that swings according to the transfer of the transplanted seedling that has come into contact therewith. 5. The seedling sorting device according to claim 3 or 4. 6. A swing means for swingably connecting an arm support shaft on which a seedling detection arm is formed and a body support shaft on which a distributing body is formed by a link member, and further comprising an arm support shaft and a substrate. A spring member is stretched between the two and so as to hold the swinging position of the seedling detection arm.
The seedling sorting device according to 3, 4 or 5.