JPH04320604A - Seedling-distributing and carrying device of seedling transplanter - Google Patents

Abstract

PURPOSE:To prevent the entanglement of leaves, etc., of seedlings on the delivery of the seedlings by disposing an undistributed seeding forwarding member, a seedling-distributing body, seedling-distributing and forwarding members and distributed seedling-divergently forwarding members and driving the carrying members under specific conditions. CONSTITUTION:An undistributed seedling-forwarding member B is disposed between a seeding-receiving device 27 and a seedling-distributing body C, and distributed seeding-divergently forwarding members E, E are disposed between the distributing body C and seeding-transplanting members 23, 23. Distributing and forwarding members D, D are disposed on the outside of the distributing body C between the forwarding members B and E. The seedling-forwarding speed of the forwarding members B and D are set to speeds larger than the carrying speeds of the forwarding members E, E. Even the transplanting seedlings P of a crop requiring a narrow transplanting distance can be thereby delivered without causing the entanglement of the leaves and roots of the seedlings.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention distributes and supplies transplant seedlings received in one seedling receiving device to two seedling planting devices using one seedling distribution and transfer device, and transfers the transplant seedlings to two seedlings in a field. This invention relates to an improvement of a seedling sorting and transferring device for a seedling transplanter that is used for planting in rows.

0002

2. Description of the Related Art A seedling sorting and transferring device of this type is equipped with a seedling transplanting machine described in Japanese Patent Application Laid-Open No. 2-273106 filed by the present applicant.

[0003] The seedling sorting and transferring device is schematically illustrated in FIG. 5 and will be explained as follows.
The seedlings P for transplanting are fed from the seedlings P to the distribution unit 5 by the pre-distribution transfer unit 4 formed by the vertically opposing parts of the pair of left and right upper belt conveyors 2 and 3, and are sorted by the distribution unit 5. The seedlings P for transplantation are transferred to a post-sorting branch transfer section 8 in which the diagonal sections of the left and right pair of lower belt conveyors 6 and 7 form the oblique sections of the upper belt conveyors 2 and 3;
A pair of left and right outer belt conveyors 10 and 11 transfer the seedlings P for transplantation to a pair of left and right outer belt conveyors 10 and 11 through supply and transfer parts 12 and 13 formed by the vertical parts of the branch and transfer parts 8 and 9 after sorting. The seedlings are supplied to seedling planting devices 14 and 15 consisting of rotating rubber discs.

[0004] The running speeds of the belt conveyors 2, 3, 6, 7, 10, and 11 of this seedling sorting and transferring device are set to be the same, and therefore, when attempting to transplant plants with a spacing of 10 cm, for example, In order to maintain a transport interval of 10 cm for transplanting seedlings P in the post-distribution branch transfer units 8 and 9 and supply transfer units 12 and 13, the transfer interval for transplantation seedlings P in the pre-distribution transfer unit 4 is
This means that it is necessary to reduce the conveyance interval to 1/2, or 5 cm.

However, the narrower the transport interval of the transplanting seedlings P in the pre-sorting transfer unit 4 and therefore the shorter the feeding interval of the transplanting seedlings P to the sorting unit 5, the more the leaves of adjacent transplanting seedlings P become entangled. It is easy to cause root entanglement, and the distribution unit 5
In this case, it is necessary to guide the preceding transplanting seedling P in the forward direction and switch to the opposite side before the following transplanting seedling P arrives in the next order, but the above-mentioned supply interval is short. In addition, the slower the speed, the more difficult it becomes to perform the corresponding predetermined switching operation quickly and accurately, which may lead to an allocation error.

[0006] In other words, the distance between the plants is 20 cm like a beet.
There are few problems in the case of crops that can be harvested more than 10 cm, but in the case of crops such as onions and wheat that require a narrow spacing of about 10 cm, as is clear from the above, seedlings for transplantation in the pre-distribution transfer section 4 should be used. It is necessary to transport the P at a distance of 5 cm, which has the drawback of causing entanglement of leaves, entanglement of roots, missorting, etc.

The purpose of the present invention is to eliminate such drawbacks, and even for crops with narrow spacing between plants, the seedlings P for transplantation can be distributed without any hindrance, and the desired two-row planting can be smoothly and accurately. The goal is to make it possible.

[0008]

[Means for Solving the Problems] The present invention provides a seedling sorting transfer using a seedling transplanter that distributes and supplies seedlings for transplantation received in one seedling receiving device to two seedling planting devices and plants them in two rows. Related to equipment.

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

[0010] Pre-distribution transfer section B and distribution transfer section D,
The transport speed of D is set to be faster than the transport speed of post-distribution branch transfer units E and E. In this case, if the former is set to twice the latter, the transport interval of the transplanting seedlings P in the pre-distribution transfer section B and the distributing transfer sections D, D will be changed to the transport interval of the transplanting seedlings P in the distributing transfer sections D, D. The spacing can be the same as the planting interval, and therefore, it is suitable for performing the desired distribution without causing leaf entanglement, root entanglement, or distribution errors.

[0011] The pre-distribution transfer section B is formed by a pair of left and right belt conveyors 30, 31 facing each other vertically running sections 30',
31', and the sorting transfer parts D, D are formed by the diagonal running parts 30'', 3 of the same pair of left and right belt conveyors 30, 31.
1'' and the sorting body C that swings left and right, and the branching and transferring parts E, E after sorting are formed between the belt conveyors 36 and 40,
37 and 41, the distribution transfer parts D and D
, belt conveyors 3 having mutually different conveying speeds
0 and 36, 31 and 37 are in a state where they sandwich and convey the transplanting seedling P.

However, by making the arrangement density of the protrusions 51, 52 of the belt conveyors 30, 31 denser than the arrangement density of the protrusions 53, 54 of the belt conveyors 36, 37,
The seedling P for transplantation is placed on the protrusion 53 of the belt conveyor 36, 37.
, 54, and there is no rotation and almost no soil falling out.

[0013]

[Operation] Change the transport interval of seedlings P for transplantation in the pre-distribution transfer section B and the distribution transfer section D, D after the distribution branch transfer section D,
By making the conveyance interval the same as that in D, it is possible to avoid leaf entanglement and root entanglement.

[0014] The sorting unit C repeatedly guides the preceding transplanting seedling P in the forward direction and switches to the opposite side before the succeeding transplanting seedling P arrives in the next order. However, the conveyance speed of the sorting transfer parts D, D is set to be faster than that of the post-sorting branch transfer parts E, E, and since the speed at which the seedlings P for transplantation pass through the sorting transfer parts D, D is faster, the sorting The swinging of the member C, that is, the switching in the left and right directions can be quickly performed following the swing, and the occurrence of a distribution error can be avoided.

[0015]

[Embodiment] The illustrated embodiment will be described in detail below. FIG. 1 is a schematic side view of a seedling transplanter equipped with a seedling sorting and transferring device A according to the present invention.

This seedling transplanter is of the type that performs the desired transplantation by obtaining power from the traction of a tractor (not shown). , Two seedling planting devices on the left and right 2
3, an opener 24, etc. are installed.

By driving the drive wheel 22, the seedling planting device 23
while rotating the main shaft 2 of the transmission 25.
6 and the seedling distribution transfer device A connected to the transmission 25 is continuously supplied with and receives the seedlings P for transplantation from the seedling receiving device 27, so that the seedlings P for transplantation are distributed to the two seedling planting devices 23. They are sent to the farm and transplanted into two rows in the field. 28 is a seedling stand, and 29 is a seedling box mounted on it.

The seedling sorting and transferring device A of the present invention is installed between a seedling receiving device 27 made of a belt conveyor and left and right seedling planting devices 23, 23 made of overlapping rubber rotating discs,
Pre-distribution transfer section B, distribution section C, distribution transfer section D, D
and post-distribution branch transfer units E, E.

[0019] 30 and 31 are wound around three pulleys 321, 322, 323 and 331, 332, 333, which are mounted on the shaft in the required three-point arrangement, respectively, in two rows of front and rear rows (see Fig. 1). A pre-distribution transfer section B is formed by vertical running sections 30' and 31' between pulleys 321 and 323 and between pulleys 331 and 333, which face each other.

The upper part of the vertical running part 30' of the belt conveyor 30 faces the front side of the sending end of the seedling receiving device 27, and the upper part of the vertical running part 31' of the belt conveyor 31 faces the sending end of the seedling receiving device 27. facing the bottom. The seedlings P for transplantation that the seedling receiving device 27 sends out from between the holding ring 34 at intervals set to be the same as the spacing between the plants of the seedlings P for transplantation, that is, the same as the planting interval, come into contact with the vertical running section 30'. As a result, the data is transferred to the pre-distribution transfer section B formed by the vertical traveling sections 30' and 31'.

In this case, the conveyance speed of the belt conveyor 30 is made faster than the conveyance speed of the seedling receiving device 27,
In 7, the spacing between the closely aligned seedlings P for transplantation is widened to, for example, 10 cm, which is the same as the spacing between plants, that is, the planting spacing.

[0022] The belt conveyors 30 and 31 are equipped with pulleys 3
The areas between 22 and 323 and between 332 and 333 are defined as oblique running sections 30'', 31'', and these oblique running sections 30'',
In a triangular space 35 surrounded by 31'' and below the pre-distribution transfer section B, the distributing section body C is pivoted so as to be swingable from side to side.

The diagonal running sections 30'', 31'' are located outside the distribution body C, and form left and right distribution transfer sections D, D between the opposite sides of the distribution body C. .

Reference numerals 36 and 37 denote upper pulleys 381 and 391 that are pivoted near the center of the bottom of the cavity 35, and lower pulleys 382 and 39 that are pivoted below each of them.
Belt conveyors 40, 41 are wound and installed symmetrically between the belt conveyors 36, 37 and the upper pulleys 421, 42 are arranged parallel to the belt conveyors 36, 37.
431 and the lower pulley 4 mounted on the shaft below each of them.
22 and 432, and these belt conveyors 36 and 40, 37 and 41 form the above-mentioned post-distribution branch transfer sections E and E between their opposing parts.

The post-distribution branch transfer units E, E have their upper receiving ends located on the left and right sides of the bottom of the cavity 35, that is, below the pulleys 323, 333, and
The lower delivery end is located at the seedling delivery site to the left and right seedling planting devices 23, 23.

The seedlings P for transplant transferred by the pre-sorting transfer section B of the belt conveyors 30, 31 are transferred to either the left or right sorting transfer section D, D in accordance with the swinging direction of the sorting section body C.
That is, for example, when the sorting unit C is in a swinging position to the right as shown in FIG. On the other hand, when the sorting body C is in a swinging position to the left, the seedlings P for transplantation are sorted to the right and guided to the right post-sorting branch transfer section E formed by the belt conveyors 37 and 41.

The conveyance speed of the left and right sorting post-distribution branch transfer units E, E is set to the seedling planting devices 23, 23, which receive the seedlings P for transplantation at a required planting interval of 10 cm, for example, and plant them in a predetermined manner.
The conveyance speed is set to be the same as the conveyance speed of We ensure that the planting is carried out reliably.

[0028] In the above, the belt conveyors 30, 31
and the conveyance speed of the belt conveyors 36, 37, 40, 41, in other words, the relationship between the conveyance speed of the pre-distribution transfer section B and the distribution transfer sections D, D and the conveyance speed of the post-distribution branch transfer section E, E. In this embodiment, the former is twice the latter, and the emphasis of the present invention is on this.

In other words, when the planting interval is relatively narrow, such as onions and wheat, about 10 cm, in order to transport the plants at a planting interval of 10 cm at each post-distribution branch transfer section E, E, the pre-distribution transfer section B and the distribution Transfer section D, D
The conveyance interval is set to a narrow interval of 1/2, 5 cm, and the pre-distribution transfer section B and the distribution transfer section D, D
If the conveyance speed of the leaves is the same as the conveyance speed of the branch transfer sections E and E after sorting, as mentioned above, leaves and roots are likely to get entangled during conveyance, and mis-sorting may occur. There is a risk of causing problems.

However, by making the transport speed of the pre-distribution transfer unit B and the distributing transfer units D, D faster than the transport speed of the post-distribution branch transfer units E, E, which is twice as high, the transfer speed of the pre-distribution transfer unit B and The conveyance interval of seedlings P for transplantation in the sorting transfer sections D and D can be made as wide as 10 cm, which is the same as the conveyance interval in the post-distribution branch transfer sections E and E, and the above-mentioned problems can be reliably avoided. be.

This will be explained in more detail as follows. Firstly, the transport interval of the transplanting seedlings P in the pre-sorting transfer section B and the distributing transfer sections D and D is made sufficiently wide to 10 cm, which is the same as the transport interval in the post-sorting branch transfer sections E and E, so that leaves entangled and roots can be prevented. Entanglements can be avoided.

Second, the sorting unit C repeatedly guides the preceding transplanting seedling P in the forward direction and switches to the opposite side before the succeeding transplanting seedling P arrives in the next order. However, the distribution transfer unit D,
Since the conveyance speed of D is set to be faster than that of the post-sorting branch transfer sections E and E, the transfer speed of the transfer seedlings P for transplantation is
The passing speed is fast, and therefore, the swinging of the sorting body C, that is, the switching in the left and right direction, is set to follow the swing and switch quickly, and it is possible to almost eliminate the occurrence of sorting errors due to the sorting body C. .

Sensors 44 and 45 are installed at required positions on the delivery end side of the pre-sorting transfer section B, that is, between the belt conveyors 30 and 30 and between the belt conveyors 31 and 31, which are wound in two rows of front and rear rows (see FIG. 1). When the root of the transplanting seedling P (for example, the paper tube part of the paper tube seedling) reaches between these sensors 44 and 45 and blocks the light between the light emitter and the light receiver, the signal is sent to a controller (not shown). When the predetermined pulses have been inputted and counted, in other words, when the preceding seedling P for transplantation has passed through the sorting body C, the output signal of the controller causes the motor 4 to
6.

The motor 46 rotates a shaft 47 and swings the distribution member C fixed to one end thereof to the left or right. As a result, the seedlings P for transplant sent out from the pre-distribution transfer section B are distributed toward the post-distribution branch transfer sections E, E on the right or left side.

A magnet 48 is 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 as the motor 46 is driven. By stopping the motor 46 in response to a signal output based on this, the sorting unit C is stopped at the opposite swing position before the transplanting seedling P that follows it in the next order arrives.

[0036] In the above, the seedlings P for transplantation are conveyed by belts that have different conveyance speeds in the conveyance section from when they reach the sorting unit C until they are received at the upper receiving end of the post-sorting branch transfer units E and E. Conveyors 30 and 36 or 31 and 37
sandwiched between.

However, the protrusions 51, 52, such as wing pieces, provided on the belt conveyors 30, 31, which have a faster conveyance speed, are arranged densely, and the belt conveyors 36, 31, which have a slower conveyance speed,
The installation density of the protrusions 53 and 54 such as wing pieces provided on the belt conveyor 37 is made coarser, so that the seedlings P for transplantation are transferred to the belt conveyor 3.
The seedlings P for transplantation are transported while being pushed between the protrusions 53 and 54 of No. 6 and 37. Therefore, the seedlings P for transplantation do not rotate in the transport section and there is almost no soil shedding, so there is no difference in speed. There are no particular problems with the conveyance itself using the above-mentioned belt conveyor.

As described above, each part of the seedling sorting and transferring device A of the present invention having the above structure is driven by the rotation of the main shaft 26 of the transmission 25 based on the drive of the drive wheel 22. , is shown in FIG. 3 together with the drive system of the belt conveyor that constitutes the seedling receiving device 27.

Note that the belt conveyor 30 of the above embodiment,
Although the projections 31, 36, 37, 40, and 41 are provided with a row of protrusions, they may also be provided with an elastic body such as a sponge.

Furthermore, in the above embodiment, the pre-distribution transfer unit B
and one belt conveyor 30 on each side for the distribution transfer section D,
31, the pre-sorting transfer section B and the sorting transfer section D can also be formed by separate belt conveyors or other conveyance members.

[0041]

[Effects of the Invention] As is clear from the above detailed description, the present invention provides the following effects. ■ When seedlings for transplantation received in one seedling receiving device are distributed and supplied to two seedling planting devices and transplanted into two rows, the seedlings P for transplantation are It is possible to avoid leaf entanglement and root entanglement during sorting transfer by setting the conveyance interval to a sufficient interval that does not cause leaf entanglement or root entanglement, for example, the same as the conveyance interval in the post-sorting branch transfer sections D and D. can.

[0042] The sorting 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 in the next order. By setting the conveyance speed of the sorting transfer parts D, D to a faster conveyance speed than the post-distribution branch transfer parts E, E, the speed at which the seedlings P for transplantation pass through the sorting conveyance parts D, D becomes faster. oscillation of the distributing body C by the amount
In other words, the switching in the left and right direction can be quickly performed following this, and the occurrence of a distribution error can be avoided.

[Brief explanation of drawings]

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

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

FIG. 3 is a schematic diagram of the drive system same as the above.

FIG. 4 is a longitudinal sectional side view of the switching mechanism of the distribution unit.

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

[Explanation of symbols]

A Seedling sorting transfer device B Pre-distribution transfer department C Distribution part D Sorting transfer department E Post-distribution transfer department P Seedlings for transplanting 23 Seedling planting device 27 Seedling receiving device 30 Belt conveyor 30' Vertical running part 30″ Diagonal running section 31 Belt conveyor 31' Vertical running part 31″ Diagonal running section 36 Belt conveyor 37 Belt conveyor 40 Belt conveyor 41 Belt conveyor 44 Sensor 45 Sensor 51　　　　Protrusion 52　　　　　Protrusion 53　　　　Protrusion 54 Protrusion

Claims (5)

[Claims] Claim 1: A seedling distribution and transfer device for a seedling transplanter, in which seedlings for transplantation received in one seedling receiving device are distributed and supplied to two seedling planting devices and planted in two rows, comprising: a seedling receiving device 27; A pre-distribution transfer unit B is provided between the distribution unit C, and post-distribution branch transfer units E, E are provided between the distribution unit C and the seedling planting devices 23, 23, and these pre-distribution transfer units B
Distributing transfer units D and D are provided between the distribution unit C and the post-distribution branch transfer units E and E, and the transport speeds of the pre-distribution transfer unit B and the distribution transfer units D and D are distributed. A seedling sorting transfer device for a seedling transplanter, characterized in that the transfer speed is set to be faster than the conveyance speed of the rear branch transfer sections E, E. [Claim 2] A pre-distribution transfer unit B and a distribution transfer unit D,
2. The seedling sorting and transferring device for a seedling transplanter according to claim 1, wherein the conveying speed of the seedling transplanter D is set to twice the conveying speed of the post-sorting branch transfer sections E, E. 3. The pre-distribution transfer section B is a vertical running section 30' of a pair of left and right belt conveyors 30, 31 facing each other;
31', and the sorting transfer parts D, D are formed by the diagonal running parts 30'', 3 of the same pair of left and right belt conveyors 30, 31.
1'' and the sorting body C that swings left and right, and the branching and transferring parts E, E after sorting are formed between the belt conveyors 36 and 40,
3. The seedling sorting and transferring device for a seedling transplanter according to claim 1 or 2, characterized in that it is formed by 37 and 41. 4. Each belt conveyor has protrusions such as wing pieces arranged in a row, and the arrangement density of the protrusions 51, 52 on the belt conveyors 30, 31 is set such that the protrusions 53, 54 on the belt conveyors 36, 37 are arranged in a row.
Claim 3 characterized in that the arrangement density is higher than that of
Seedling sorting transfer device of the described seedling transplanter. Claim 5: Seedlings P for transplantation are placed on the sending end side of the pre-distribution transfer section B.
Sensors 44 and 45 are provided to detect the passage of the seedling, and based on the detection signal, the preceding seedling P for transplantation passes through the distribution body C, and the next seedling P for transplantation arrives at the distribution body C. Claim 1, 2, 3, or 4, characterized in that the distributing body C is swung and switched before the distribution is performed.
Seedling sorting transfer device of the described seedling transplanter.