JPH0763248B2 - Seedling transfer device of seedling transplanter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention distributes seedlings received by one seedling receiving device to two seedling planting devices by one seedling distribution transfer device and supplies the seedlings to the field. The present invention relates to improvement of a seedling distribution / transfer device of a seedling transplanter that is planted in a row.

[0002]

2. Description of the Related Art As a seedling distribution / transferring device of this type, there is a seedling transplanting device described in Japanese Patent Application Laid-Open No. 2-273106 filed by the present applicant.

The seedling distribution / transfer device will be briefly described with reference to FIG. 5. The seedling receiving device 1 is composed of a belt conveyor.
The seedlings P for transplantation sent from the above are sent to the sorting unit 5 by the pre-sorting transfer unit 4 formed by the vertical facing portions of the pair of left and right upper belt conveyors 2, 3 and sorted by the sorting unit 5. The post-sorting branch transfer unit 8 in which the transplanted seedling P is formed by the pair of left and right lower belt conveyors 6, 7 formed by the oblique portions of the upper belt conveyors 2, 3 above.
9 of the transplant seedlings P, and a pair of left and right outer belt conveyors 10 and 11 feeds and transfers the seedlings P to the left and right via a supply transfer section 12 and 13 formed by the vertical sections of the branch transfer sections 8 and 9 after sorting. It is adapted to be supplied to the seedling planting devices 14 and 15 which are made of rubber rotating discs.

The traveling speeds of the belt conveyors 2, 3, 6, 7, 10, 11 of the seedling distributing and transferring apparatus are set to be the same, so that it is necessary to set the interval between plants, that is, the planting interval to 10 cm, for example. Holds 10 cm as the transfer interval of the transplant seedlings P in the post-sorting branch transfer units 8 and 9 and the supply transfer units 12 and 13. For that purpose, the transfer interval of the transplant seedlings P in the pre-sorting transfer unit 4 is It is necessary to keep 1/2 as 5 cm.

However, the shorter the feeding interval of the transplanting seedlings P in the pre-sorting transfer section 4 is, and the shorter the feeding interval of the transplanting seedlings P to the sorting unit 5 is, the leaf entanglement of the neighboring transplanting seedlings P and the like. It is easy to cause entanglement, and the distribution unit 5
Requires that the preceding transplanting seedling P be guided in the forward direction and that the succeeding transplanting seedling P be switched to the opposite side before the succeeding transplanting seedling P arrives in the next order, but the supply interval is short. In addition, the slower the speed, the more difficult it becomes to perform the predetermined switching operation correspondingly with agility and accuracy, which may cause a distribution error.

That is, the distance between the stocks is 20 cm like a beet.
In the case of crops that can be taken as described above, there are few problems, but in the case of crops such as onions and wheat, in which the distance between the plants must be narrowed to about 10 cm, the transplant seedling in the pre-sorting transfer unit 4 is clear as described above. Since it is necessary to set the conveyance interval of P to 5 cm, there is a drawback that leaf entanglement, root entanglement, distribution error, etc. occur.

The object of the present invention is to eliminate such drawbacks, and even in the case of crops having a narrow planting interval, that is, between plants, the seedlings P for transplantation can be distributed without trouble and desired two-row planting can be carried out smoothly and accurately. To be able to do it.

[0008]

According to the present invention, seedlings are transferred to a seedling transplanting machine, in which seedlings for transplantation received in one seedling receiving device are distributed and supplied to two seedling planting devices to be planted in two rows. Related to the device.

The seedling distribution transfer device A is a seedling receiving device 2
A pre-sorting transfer unit B is provided between the sorting unit 7 and the sorting unit C. Further, post-sorting branch transfer units E, E are provided between the sorting unit C and the seedling planting devices 23, 23, and between the pre-sorting transfer unit B and the post-sorting branch transfer units E, E. The distribution transfer units D and D are provided outside the distribution unit C.

Before-sorting transfer section B and sorting-transfer section D,
The transport speed of D is set to be higher than the transport speed of the branch transfer units E, E after distribution. In this case, if the former is set to be twice as large as the latter, the transport interval of the transplant seedlings P in the pre-sorting transfer section B and the sort transfer sections D, D is set to the transport interval in the sort transfer sections D, D, that is, the transplant seedling P. The planting interval can be made the same, and therefore, it is preferable to perform the desired distribution without causing leaf entanglement, root entanglement, or distribution error.

The pre-sorting transfer section B is provided with a pair of left and right belt conveyors 30 and 31, which are vertically running sections 30 ', which face each other.
31 ', and the distribution transfer parts D, D are formed by the oblique traveling parts 30 ", 3 of the pair of left and right belt conveyors 30, 31.
1 ″ and the distribution unit C that swings to the left and right, and the branch transfer units E, E after distribution are formed on the belt conveyors 36 and 40,
When formed by 37 and 41, the distribution transfer units D, D
Belt conveyors 3 having different conveying speeds
0 and 36, 31 and 37 are in a state of sandwiching and carrying the transplant seedling P.

However, by setting the arrangement density of the protrusions 51 and 52 of the belt conveyors 30 and 31 to be higher than the arrangement density of the protrusions 53 and 54 of the belt conveyors 36 and 37,
The transplant seedling P is the protrusion 5 of the belt conveyor 36, 37.
It is transported while being pushed between 3, 54, and does not rotate, and there is almost no soil removal.

[0013]

Operation: The transfer interval of the seedlings P for transplantation in the transfer section B before distribution and the transfer sections D, D after distribution is branched and transferred to the transfer section D,
It is possible to avoid the leaf entanglement and the root entanglement by setting the width to be the same as the conveyance interval in D.

The distribution unit C guides the preceding transplanting seedling P in the forward direction and repeatedly performs the operation of switching to the opposite side before the succeeding transplanting seedling P arrives at the next order. However, the transfer speed of the distribution transfer units D, D is set to be higher than that of the branch transfer units E, E after distribution, and the transfer speed of the transplanting seedling P through the distribution transfer units D, D is high. The swinging of the body C, that is, the switching to the left and right direction can be swiftly performed by following it, and the occurrence of an allocation error can be avoided.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described in detail below. FIG. 1 is a schematic side view of a seedling transplanter equipped with a seedling distribution transfer device A according to the present invention.

This seedling transplanting machine is of a type for performing desired transplantation by obtaining power by pulling a tractor (not shown). A transplanter frame 21 having a front frame 20 connected to the tractor and a drive wheel 22 are provided. The left and right two seedling planting devices 23 and openers 24 are mounted.

By driving the drive wheels 22, the seedling planting device 23
And rotating the main shaft 2 of the transmission 25
By rotating 6 and continuously supplying and receiving the transplant seedling P from the seedling receiving device 27 to the seedling distribution transfer device A linked to the transmission 25, the transplant seedling P is distributed to the two seedling planting devices 23. It has been sent and is now ready to be transplanted to the field in two rows. 28 is a seedling stand, and 29 is a seedling box mounted on it.

The seedling distribution transfer device A of the present invention is installed between a seedling receiving device 27 consisting of a belt conveyor and left and right seedling planting devices 23, 23 formed by superimposing rubber rotating discs.
Pre-sort transfer unit B, sort unit C, sort transfer units D, D
And post-sort branch transfer units E, E.

Reference numerals 30 and 31 denote three pulleys 32 _1, 32 _2, 32 ₃ and 3 each of which is mounted on a desired three-point arrangement.
A pair of left and right belt conveyors, each of which is wound around 3 ₁ , 33 ₂ and 33 ₃ in front and rear two rows (see FIG. 1),
Vertical run (30) facing each other between and between 33 ₁ and 33 ₃ of the pulley 32 ₁ and 32 ₃ ', 31' to form a distribution before transfer portion B by.

The upper portion of the vertical traveling portion 30 'of the belt conveyor 30 faces the front side of the delivery end of the seedling receiving device 27, and the upper portion of the vertical traveling portion 31' of the belt conveyor 31 is the delivery end of the seedling receiving device 27. Facing the lower side. The transplanting seedlings P that the seedling receiving device 27 sends out from between the plants of the transplanting seedlings P, that is, at intervals of the sending intervals set to be the same as the planting intervals, contact the vertical running portion 30 ′. Is transferred to the pre-sorting transfer section B formed by the vertical running sections 30 'and 31'.

In this case, the conveyor speed of the belt conveyor 30 is set higher than that of the seedling receiving device 27, and the seedling receiving device 2
In 7, the transplant seedlings P in a closely aligned state are arranged such that the distance between them is widened to the same as that between the plants, that is, the planting interval, for example, 10 cm.

The belt conveyors 30 and 31 are pulleys 3
2 ₂ 32 ₃ between 33 ₂ and 33 ₃ skew travel section 3 between the
0 ″ and 31 ″, and the distribution unit C is horizontally swung below the pre-distribution transfer unit B in the triangular space 35 surrounded by the oblique traveling units 30 ″ and 31 ″. It is mounted freely.

The skew running portions 30 "and 31" are located outside the distribution unit C and form left and right distribution transfer units D and D between the opposite sides of the distribution unit C. .

Reference numerals 36 and 37 denote upper pulleys 38 ₁ and 39 ₁ which are axially mounted near the center of the bottom of the space 35, and lower pulleys 38 ₂ and 39 ₂ which are axially mounted below the respective pulleys 38 ₁ and 39 _1. Belt conveyors, 40, 4 that are wound and installed symmetrically
1 is wound on the outside of the belt conveyors 36, 37 so as to be parallel to it and between the upper pulleys 42 ₁ and 43 ₁ and the lower pulleys 42 ₂ and 43 ₂ which are respectively mounted on the lower pulleys 42 ₁ and 43 _1. These belt conveyors 36 and 40, 37 and 41 form the above-mentioned post-sorting branch transfer portions E and E between their facing portions.

After this distribution, the branch transfer units E, E
, Along with positioning the upper receiving end below the bottom right i.e. the pulleys 32 _3, 33 ₃ of Sorasho 35, by positioning the seedling transfer site of the lower delivery end to the left and right seedling planting apparatus 23 There is.

The transplant seedling P transferred by the pre-sorting transfer section B of the belt conveyors 30 and 31 corresponds to the swinging direction of the sorting section body C, and either the left or right sorting transfer section D,
D, that is, for example, when the distribution unit C is rocked to the right as shown in FIG. 2, the transplant seedling P is distributed to the left side and to the left distribution branch transfer unit E formed by the belt conveyors 36 and 40. Induced and, on the contrary, distribution unit C
Is swung to the left side, the transplanting seedling P is sorted to the right side and guided to the post-sorting branch transfer section E on the right side formed by the belt conveyors 37 and 41.

The transfer speed of the left and right post-sorting branch transfer sections E, E is a seedling planting device 23, 23 for receiving the seedlings P for transplantation at a required planting interval, for example, 10 cm, and performing a predetermined planting.
Is set to be the same as the transport speed of the seedlings, whereby the post-sorting branch transfer units E, E can smoothly transfer the transplanting seedlings P to the seedling planting devices 23, 23, and based on that, The planting is ensured.

In the above, the belt conveyors 30, 31
Relationship between the transfer speed of the pre-sorting transfer section B and the transfer rates of the pre-sorting transfer sections D, D and the post-sorting branch transfer sections E, E. In the present embodiment, however, the former is twice as large as the latter, and the importance of the present invention lies in doing so.

That is, when the planting interval is relatively narrow such as about 10 cm like onions or wheat, in order to convey at the planting interval 10 cm in the branching and transferring units E, E after each sorting, the pre-sorting transferring unit B and the sorting unit are used. Transfer unit D, D
The transfer interval in the transfer is set to a narrow interval of 1/2 of 5 cm, and the pre-sort transfer unit B and the sort transfer units D and D are set.
If the transport speed of the same is set to be the same as the transport speed of the branch transfer units E, E after sorting, leaf entanglement or root entanglement is likely to occur during the transport as described above, and a sorting error may occur. May cause trouble.

However, the transfer speed of the pre-sorting transfer unit B and the transfer units D, D is faster than the transport speed of the post-sorting branch transfer units E, E, which is also doubled, so that the pre-sorting transfer unit B, The transfer interval of the seedlings P for transplantation in the distribution transfer parts D, D can be set to be as wide as 10 cm, which is the same as the transfer interval in the branch transfer parts E, E after distribution, so that the above trouble can be surely avoided. is there.

This will be described in more detail as follows. First, since the transfer interval of the transplant seedlings P in the pre-sorting transfer unit B and the sort transfer units D, D is sufficiently wide as 10 cm, which is the same as the transport interval in the post-sorting branch transfer units E, E, leaf entanglement and roots You can avoid getting entangled.

Secondly, the distribution unit C repeatedly guides the preceding transplanting seedling P in the forward direction and repeats the operation of switching to the opposite side before the succeeding transplanting seedling P arrives in the next order. The distribution transfer unit D,
Since the transfer speed of D is set to a higher transfer speed than the branch transfer units E, E after distribution, the transfer units D, D of the transplanting seedling P are set.
Therefore, the distribution unit C is set to swivel, that is, switched to the left and right directions quickly so that the distribution unit C can hardly make a distribution error. .

Sensors 44 and 45 are provided at required positions on the sending end side of the pre-sorting transfer section B, that is, the belt conveyors 30 and 30 wound between two rows in front and rear (see FIG. 1) and between 31 and 31. Then, when the root portion of the transplanting seedling P (for example, the paper tube portion of the paper tube seedling) reaches between these sensors 44 and 45 and shuts off the light between the light projecting section and the light receiving section, the signal is sent to a controller (not shown). When a predetermined pulse is input and counted, in other words, when the preceding transplanting seedling P passes through the distribution unit C, the motor 46 is driven by the output signal of the controller.

The motor 46 rotates the shaft 47 and swings the distribution unit C fixed to one end thereof to the left or right. As a result, the transplant seedling P sent from the pre-sorting transfer section B is sorted to the right or left post-sorting branch transfer section E, E.

Reference numeral 48 is a magnet attached to the tip of a bracket 49 fixed to the other end of the shaft 47, and 50 and 50 'are Hall sensors for detecting the magnet 48 which rotates when the motor 46 is driven. By stopping the motor 46 by the signal output based on the above, the distribution unit C is stopped at the opposite swinging position before the transplanting seedling P, which follows in the next order, arrives.

In the above description, the transplanting seedlings P are belts having different conveying speeds in the conveying section after reaching the distributing section C and being received by the upper receiving ends of the branch transfer sections E, E after distribution. Conveyors 30 and 36 or 31 and 37
Sandwiched between.

However, the installation density of the protrusions 51, 52 such as the wing pieces provided on the belt conveyors 30, 31 having the higher conveying speed is made dense, and the belt conveyor 36 having the lower conveying speed,
The installation density of the protrusions 53 and 54 such as the wing pieces provided on the 37 is roughened, whereby the seedling P for transplant is transferred to the belt conveyor 3
It is designed to be conveyed while being pushed between the protrusions 53 and 54 of 6, 37. Therefore, the transplanting seedling P does not rotate and there is almost no soil removal in the conveying section. There is no particular problem in the transportation itself by the above-mentioned belt conveyor.

As described above, the drive of each part of the seedling distribution transfer device A of the present invention having the above-described structure is performed by the rotation of the main shaft 26 of the transmission 25 based on the drive of the drive wheels 22, and the drive system will be outlined below. The drive system of the belt conveyor constituting the seedling receiving device 27 is shown in FIG.

The belt conveyor 30 of the above embodiment,
Although the protrusions are arranged in a row as 31, 36, 37, 40 and 41, elastic members such as sponges may be stretched.

In the above embodiment, the pre-sorting transfer unit B
And the distribution transfer unit D, one on each of the left and right belt conveyors 30,
However, the pre-sorting transfer section B and the sorting transfer section D can be formed by separate belt conveyors or other conveying members.

[0041]

As is clear from the above description, the present invention has the following effects. When the seedlings for transplantation received in one seedling receiving device are distributed to two seedling planting devices and are supplied to two rows for transplantation, the transfer section B before distribution
And the transfer interval of the transplanting seedlings P in the distribution transfer sections D, D is a sufficient interval without causing leaf entanglement or root entanglement,
For example, it is possible to make the conveyance interval in the post-sorting branch transfer units D and D the same and avoid causing leaf entanglement or root entanglement during the sorting transfer.

The distribution unit C is the preceding transplanting seedling P.
In the forward direction and repeatedly performing the operation of switching to the opposite side before the subsequent transplanting seedling P arrives at the next order, the transfer speeds of the distribution transfer units D and D are distributed after the distribution transfer unit. By setting the transfer speed higher than E, E, the speed at which the transplanting seedling P passes through the transfer transfer sections D, D becomes faster, so that the transfer section C swings by that amount, that is, switching to the left and right direction. Can be quickly performed by following the above, and the occurrence of a distribution error can be avoided.

[Brief description of drawings]

FIG. 1 is a schematic side view of a transplanter equipped with a seedling distribution transfer device according to an embodiment of the present invention.

FIG. 2 is a schematic front view of the seedling distribution transfer device according to the embodiment of the present invention.

FIG. 3 is a schematic view of the above drive system.

FIG. 4 is a vertical cross-sectional side view of a switching unit switching mechanism.

FIG. 5 is an explanatory diagram of a known seedling distribution transfer device.

[Explanation of symbols]

 A seedling distribution transfer device B pre-distribution transfer unit C distribution unit D distribution transfer unit E distribution transfer unit P transplant seedling 23 seedling planting device 27 seedling receiving device 30 belt conveyor 30 'vertical traveling unit 30 "oblique traveling unit 31 Belt Conveyor 31 'Vertical Traveling Part 31 "Oblique Traveling Part 36 Belt Conveyor 37 Belt Conveyor 40 Belt Conveyor 41 Belt Conveyor 44 Sensor 45 Sensor 51 Protrusion 52 Protrusion 52 Protrusion 53 Protrusion 54 Protrusion

Claims (5)

[Claims] 1. A seedling distribution / transfer device of a seedling transplanter, wherein seedlings for transplantation received in one seedling reception device are distributed and supplied to two seedling planting devices to be planted in two rows. The pre-sorting transfer section B is provided between the sorting section body C, and the post-sorting branch transfer sections E, E are provided between the sorting section body C and the seedling planting devices 23, 23.
And the post-sorting branch transfer units E, E and the sort transfer units D, D are provided outside the sort unit C, and the transport speeds of the pre-sort transfer unit B and the sort transfer units D, D are sorted. A seedling distribution transfer device for a seedling transplanter, which is set to be faster than the transfer speed of the rear branch transfer parts E, E. 2. A pre-sorting transfer section B and a sorting transfer section D,
The seedling distribution / transfer device for a seedling transplanter according to claim 1, wherein the transfer speed of D is set to be twice as high as the transfer speed of the branch transfer units E, E after distribution. 3. The pre-sorting transfer section B is provided with vertical traveling sections 30 ', which are opposed to each other, of a pair of left and right belt conveyors 30,31.
31 ', and the distribution transfer parts D, D are formed by the oblique traveling parts 30 ", 3 of the pair of left and right belt conveyors 30, 31.
1 ″ and the distribution unit C that swings to the left and right, and the branch transfer units E, E after distribution are formed on the belt conveyors 36 and 40,
3. The seedling distribution and transfer device of the seedling transplanter according to claim 1, wherein the seedling distribution device is formed by 37 and 41. 4. Each belt conveyor has projections such as winglets arranged in a row, and the projections 51, 52 of the belt conveyors 30, 31.
Of the line arrangement density of the protrusions 53, 5 of the belt conveyors 36, 37
4. The seedling distribution / transfer device for a seedling transplanter according to claim 3, wherein the seedling distribution device has a higher density than the line arrangement density of 4. 5. A seedling P for transplantation on the sending end side of the transfer section B before distribution.
The sensors 44 and 45 for detecting the passage of the seedlings are provided, and based on the detection signal, the preceding transplanting seedling P passes through the sorting part C and the succeeding transplanting seedling P reaches the sorting part C in the next order. 5. The distribution unit C is oscillated so as to be switched before the operation.
The seedling distribution and transfer device of the described seedling transplanter.