JP2011142889A - Rice transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively utilize a guide route for a granule necessary and indispensable to a fertilizer applicator even for a guide route for the granule of a seeder when using the fertilizer applicator also as the seeder, to simplify the constitution related to the seeder as much as possible, and to simplify the whole structure. <P>SOLUTION: A constituent member A of a feed route for leading the granule delivered from a delivering mechanism near a predetermined site for dropping is mounted in a granule feeder 40. A dropping position-changing means B changing the terminal end position of the constituent member A of the feed route in the right and left directions intersecting with the forward direction of the machine body is installed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention includes a seedling planting device provided with planting claws and a powder body supply device that includes a feeding mechanism that feeds the granular material by a predetermined amount, and that can supply the granular material near a seedling planting location by the seedling planting device. It is related to rice transplanter equipped with.

As described above, a seedling planting device provided with planting claws, and a feeding mechanism for feeding powder particles near a seedling planting location by the seedling planting device, provided with a feeding mechanism for feeding the granular material by a predetermined amount. As a rice transplanter provided with an apparatus, the one described in [1] below has been known.
[1] A fertilizer guide path and sowing are provided with both a fertilizer groover and a sowing groover, and a supply hose from the feeding mechanism is connected to each groover. Guide route for fertilizer, and by switching the route on the feed mechanism side, either fertilizer guide route or sowing guide route is selected, and either fertilizer or sowing seed is selected (See, for example, Patent Document 1).

JP-A-8-331913 (paragraph numbers “0013” and “0015”, FIGS. 2 and 4)

As in the prior art described in [1] above, a fertilizer grooving device and a sowing grooving device are provided in advance, and any one of a fertilization guide route and a sowing guide route is provided. On the other hand, if one is selected and either fertilizer or seed pod can be selectively supplied to one of the groovers, the fertilizer can also be used as a seeding device without having to remove the seedling planting device Therefore, it is possible to switch between the seedling planting device and the dedicated seeding device, so that it can be conveniently switched and used without the need for attaching and detaching the device, compared to a structure that allows seedling planting work or seeding work. It is useful.
However, with this structure, it is necessary to provide both a fertilizer groover and a sowing groover in advance, as well as a supply hose for each of these groover and a switching means in the feeding mechanism. There is. For this reason, the structure of the entire seedling planting device becomes complicated with the increase in the number of parts such as the groover and the guide path, and the overall weight increases. There is a risk that the running resistance may increase due to this.

  The purpose of the present invention is to provide a fertilizer application path that is indispensable as a fertilizer application device so that the fertilizer can also be used as a seeding device without removing the seedling planting device. The aim is to simplify the entire structure by simplifying the construction related to the seeding device as much as possible so that it can be effectively used for the guide route.

In order to achieve the above object, the rice transplanter according to the present invention has the following technical means.
[Solution 1]
The present invention includes a seedling planting device provided with planting nails, a powder body supplying device capable of supplying powder particles near a seedling planting location by the planting nails, provided with a feeding mechanism that feeds the powder particles by a predetermined amount. A rice pathing machine equipped with a supply path component that guides the powder fed from the feed mechanism to the vicinity of the planned fall point in the powder feeder, and the terminal position of the supply path component Is provided with drop position changing means capable of changing the position in the left-right direction intersecting the aircraft traveling direction.

[Operation and effect of invention according to Solution 1]
As described above, the dropping position of the granular material fed out from the feeding mechanism can be changed by the dropping position changing means capable of changing the terminal position of the supply path constituent member that guides the granular material close to the planned dropping position. As a result, the end position of the supply path constituent member that guides the powder fed from the feed mechanism of the powder supply device to the vicinity of the planned fall point is changed in the left-right direction intersecting the aircraft traveling direction. Can do.

  Therefore, in the present invention, by changing the drop supply point of the granular material in the left-right direction intersecting the aircraft traveling direction, at the time of seedling planting work, the lateral side position that is a predetermined distance away from the planted seedling row It is possible to change the position such as performing fertilization or setting the positions to be seeded at predetermined intervals during the sowing operation. Thereby, it is not necessary to previously provide a plurality of dedicated supply path constituent members, such as providing a plurality of such supply path constituent members or a path switching operation mechanism, increasing the size of the apparatus, There is an advantage that can be avoided.

[Solution 2]
In the invention according to the solution means 2, the drop position changing means is a seedling in which the dropping part of the powder supplied from the terminal position of the supply path constituting member is lateral to the seedling planting part by the planting claws of the seedling planting device. It is possible to change the end position of the supply path constituent member so that it can be switched between a supply position for planting work and a supply position for seeding work that drops and supplies powder particles toward the passage of the planting claws. It is characterized by being.

[Operation and effect of invention according to Solution 2]
As described above, the change of the powder drop position can be performed by the change operation of the powder drop position by the drop position changing means, so that the advantage of avoiding the increase in size and complexity of the apparatus can be achieved. In addition, it can be used more conveniently in the following points.
In other words, the seeding nail fall position at the time of sowing work is the sowing work supply position for dropping the powder grain toward the passage of the planting nail, so the planting nail formed in the field Thus, there is an advantage that the growth of seed pods after sowing can be maintained stably at a predetermined position and can be easily performed.

[Solution 3]
In the invention according to the solution means 3, the drop position changing means is equipped to slide the powder particles fed from the feeding mechanism of the powder material supply device in a predetermined direction at the terminal portion of the supply path constituting member. The drop guide body is configured to be detachable with respect to the terminal portion of the supply path constituting member.

[Operation and effect of invention according to Solution 3]
As described above, the drop position changing means is provided at the end portion of the supply path constituting member by the drop guide provided to slide the powder fed from the feeding mechanism of the powder feed device in a predetermined direction. Is configured. And the fall guide body is comprised detachably with respect to the termination | terminus part of a supply path | route structural member.
Therefore, a simple structure that only uses a drop guide is sufficient as a member for changing the drop position, and the change operation of the drop position is performed by a simple operation that simply attaches / detaches the drop guide. There are advantages that can be made.

[Solution 4]
In the invention according to the solution means 4, the drop position changing means guides the drop material to drop to the seeding work supply position in a state where the drop guide body is mounted at the terminal portion of the supply path constituting member, and the drop guide The powder body is configured to drop to a seedling planting supply position in a state where the body is removed from the terminal end of the supply path constituting member.

[Operations and effects of invention according to Solution 4]
The drop guide is used only during sowing work, and is removed during seedling planting work. Therefore, during the seedling planting work, the drop guide body touches the planted seedling and damages the seedling. Never become. And at the time of sowing work, if it is at the time of seedling planting work, the end position of the drop guide body can be brought closer to the seedling planting place so that it comes in contact with the planted seedling. It is easy to reliably supply to the seeding work supply position.

[Solution 5]
In the invention according to the solution means 5, the drop position changing means is equipped to slide the granular material fed from the feeding mechanism of the granular material supply device in a predetermined direction at the terminal portion of the supply path constituting member. Further, the sliding guide body is configured such that the sliding guide direction or sliding end position of the falling guide body can be changed.

[Operation and effect of invention according to Solution 5]
As described above, the drop position changing means is provided at the terminal end of the supply path constituting member so as to slide down the granular material fed from the feeding mechanism of the granular material supply device in a predetermined direction. Since it is configured with a body and the sliding guide direction or sliding end position of the drop guide body can be changed, the drop position can be changed by simply changing the direction of the falling guide body or changing the sliding end position. Can be changed.
When seedlings are planted without seeding work, if the fall guide is in a direction away from the seedling planting location or a position away from it, the fall guide will contact the planted seedlings and damage the seedling. Can be avoided.

[Solution 6]
The invention according to the solution 6 is characterized in that the granular material supply device includes a regulation plate capable of limiting the supply amount of the granular material to the feeding mechanism.

[Operations and Effects of Invention According to Solution 6]
In other words, the amount of seed pods delivered during sowing work is much smaller than the amount of fertilizer applied during seedling planting work. If the feeding amount is to be changed by the change, the driving speed of the feeding mechanism must be changed extremely large, and there is a possibility that the speed change mechanism for changing the feeding speed tends to be large.
Compared to this, if the restriction plate capable of restricting the supply amount of the granular material to the feeding mechanism as described above is provided and the feeding amount from the feeding mechanism is limited, the driving speed of the feeding mechanism itself is extremely reduced. Therefore, there is no need to slow down the feed amount and reduce the feed amount. Therefore, a large speed change mechanism that greatly changes the drive speed of the feed mechanism is not required, which is effective for downsizing the speed change structure.
In addition, when the feeding amount from the feeding mechanism is reduced by extremely slowing down the driving speed of the feeding mechanism, the feeding speed is extremely slow compared to when seeding while feeding a small amount at a normal feeding speed. There is a risk that the falling location and amount of the seed pods fed out from the feeding mechanism that has been produced tend to vary irregularly, making it difficult to obtain a good sowing state. However, according to the present invention, by limiting the supply amount to the feeding mechanism, it is possible to discharge the seed potatoes little by little without having to greatly reduce the driving speed of the feeding mechanism, and the seeding position and the seeding amount are irregular. It is also useful in that it can avoid problems such as variations.

It is a whole side view showing a riding type rice transplanter. It is a top view which shows a part of seedling planting apparatus. It is a side view which shows a seedling planting apparatus and a fertilizer application apparatus. It is a rear view of a fertilizer applicator. It is a vertical direction sectional view in a direction parallel to the drive shaft showing the feeding mechanism. FIG. 5A is a vertical sectional view in a direction orthogonal to the drive shaft, and FIG. 5B is a perspective view illustrating a regulating plate. FIG. 4 is a side view showing a drop position changing means, in which (a) is a side view showing an attachment state of a drop guide body to a supply path constituting member, and (b) is a perspective view showing the drop guide body. 4 shows another embodiment of the drop position changing means, where (a) is a side view showing the state of attachment of the drop guide body to the supply path constituting member, and (b) is a plan view showing the position change state of the drop guide body. It is explanatory drawing. It is explanatory drawing which shows another embodiment of a fall position change means. A groove formation machine is shown, (a) is a side view, (b) is a top view, and (c) is a perspective view. It is a top view which shows the state which attached the groove formation device to the leveling float.

Hereinafter, an example of an embodiment of the present invention will be described based on the drawings.
[Overall structure of rice transplanter]
FIG.1 and FIG.2 has shown the riding type rice transplanter which is an example of the rice transplanter to which this invention is applied.
FIG. 1 shows an entire side surface of a riding type rice transplanter. This rice transplanter is connected to a rear portion of a traveling vehicle body 1 via a link mechanism 3 that is driven to swing up and down by an operation of a hydraulic cylinder 2. A seedling planting device 4 for four-row planting is connected so as to be driven up and down.

The traveling vehicle body 1 uses power from an engine 6 mounted on a front frame 5 as a belt tension type main clutch 7, a hydrostatic continuously variable transmission 8 provided as a main transmission, and a transmission as an auxiliary transmission. It is configured as a four-wheel drive type that transmits to a pair of left and right front wheels 10 and rear wheels 11 via a gear-type transmission (not shown) installed in the case 9.
A steering wheel 13 linked to the left and right front wheels 10 via a steering operation system is disposed above a front cover 12 that covers the engine 6 and the like from above, and a rear frame 14 that extends rearward from the mission case 9. A driver's seat 15 is installed above the rear.

[Seedling planting equipment]
As shown in FIGS. 1 to 3, the seedling planting device 4 has a power distribution system in which work power from a work transmission system installed in a transmission case 9 that is transmitted via a transmission shaft 16 or the like is installed in a transmission case 17. It is transmitted to the mechanism 18. With the distributed power from the power distribution mechanism 18, the lateral feed mechanism 19 reciprocates with a fixed stroke in the left-right direction along the left-right sliding guide rail 21 with a constant stroke in the left-right direction. The four crank arm type planting mechanisms 22 juxtaposed in parallel cut out a predetermined amount of seedlings placed on the seedling placing stand 20 from the seedling outlet 21a formed in the sliding guide rail 21 at a constant cycle, It is configured so as to be planted in mud of a farm field leveled by the leveling float 23. Then, every time the seedling stage 20 reaches the left and right stroke ends, the vertical feed mechanism 24 operates to vertically feed the seedlings placed on the seedling stage 20 toward the sliding guide rail 21 at a constant pitch. It is configured as follows.

  As shown in FIGS. 2 and 3, the transmission case 17 is made of an aluminum die cast having a two-part structure that can be divided into a left case 25 and a right case 26. Is supported by a front and rear support shaft (not shown) fixedly mounted on the base plate so as to be relatively rotatable.

  The left case 25 is integrally formed with a cylindrical left transmission case portion 25A extending outwardly to the left. The right case 26 is integrally formed with a cylindrical right transmission case portion 26 </ b> A extending outward to the right. An output shaft 27 for the planting mechanism 22 is provided in each of the left and right transmission case portions 25A and 26A.

  As shown in FIGS. 1-5, the front-end part of the planting transmission case 28 equipped with the attitude | position of the front-back direction is each connected with the extension end of each transmission case part 25A, 26A of right and left. That is, the left and right transmission case portions 25A and 26A are also used as a support member for supporting the corresponding planting transmission case 28, and the pair of left and right planting transmission cases 28 are provided on the left and right corresponding transmission case portions 25A and 25A. 26A is cantilevered so as to extend rearward from its extended end.

  Each of the left and right planting transmission cases 28 is connected and equipped with a support frame 29 extending from the front end portion thereof toward the upper portion of the seedling mounting table 20. The support frame 29 is configured to receive and support the upper portion of the seedling table 20 while allowing the seedling table 20 to move in the horizontal direction and the vertical direction.

  Although not shown, the power distribution mechanism 18 to which the driving force for work is transmitted from the transmission case 9 via the transmission shaft 16 and the like is transmitted to the power distribution mechanism 18 through the planting clutch and the like. Is transmitted from the relay shaft to the lateral feed mechanism 19 and the longitudinal feed mechanism 24 via a reduction gear and the like, and via a chain-type transmission mechanism and a pair of left and right individual clutches. It is configured to transmit to the left and right output shafts 27.

  As shown in FIGS. 2 to 4, the working power transmitted to the left and right output shafts 27 is transmitted to the planting transmission shafts 31 provided in the left and right planting transmission cases 28 via a pair of bevel gears 30. The left and right planting transmission shafts 31 are transmitted through a pair of bevel gears 32 to the left and right planting drive shafts 33 arranged at the rear ends of the planting transmission cases 28.

As shown in FIGS. 1 to 3, each planting mechanism 22 is configured such that the front and rear intermediate portions of a planting case 36 having a planting claw 34 and a pusher 35 at the front end rotate integrally with the planting drive shaft 33. The arm 37 is supported so as to be rotatable relative to a support shaft 38 provided at the free end portion of the arm 37. Then, the rear end portion of the planting case 36 is supported by the arm portion 28A formed to extend to the rear end portion of the corresponding planting transmission case 28 via the linkage arm 39 or the like, so that the planting drive shaft is supported. With the rotation of 33, the tip of the planting claw 34 is configured to be driven to swing while drawing a predetermined planting locus extending from the seedling outlet 21a and the planting position in the field.
Thereby, it is possible to satisfactorily take out the planted seedlings from the seedling mount 20 and plant them in the field mud by the planting mechanisms 22.

[Leveling float]
The leveling float 23 will be described. As shown in FIGS. 1, 3, and 11, the leveling float 23 has a lateral width corresponding to the planting width corresponding to the total number of planting strips, a horizontally long float main body 23 </ b> A, and a float main body 23A includes a front projecting portion 23B extending forward from the left and right center position of the portion 23A, and a pair of left and right rear projecting portions 23C extending rearward from two places in the left and right direction of the float main body portion 23A. .
The front projecting portion 23B projects forward from the left and right center position of the front end of the float main body portion 23A, and has a function as a sensor float used for planting control.
The pair of left and right rear projecting portions 23C are provided so as to be located on the rear side of the left and right front wheels 10 and the rear wheels 11, respectively, and the front wheels 10 and the rear wheels 11 are rearranged so as to level the passage marks of the front wheels 10 and the rear wheels 11. The ring 11 is formed wider than the lug width.
In addition, the code | symbol 23d in FIG. 11 is a grooving device mounting part for mounting | wearing the grooving device 50 for fertilization at the time of seedling planting work.

  The front overhanging portion 23B and the rear overhanging portion 23C exhibit a lateral width that is one third to one quarter of the lateral width of the float main body portion 23A. The float body portion 23A, the front overhang portion 23B, and the back overhang portion 23B are integrally formed by blow molding in which two resin plates are stacked and compressed air is blown between the two resin plates. As the resin material used, engineering resins such as nylon, polyethylene, ABS, and PET are used.

[Powder supply device]
As shown in FIGS. 1-6, the seedling planting apparatus 4 is equipped with the granular material supply apparatus 40 above the rear part.

The granular material supply device 40 includes a connecting frame 41 in the left-right direction, four feeding cases 42 connected to the connecting frame 41 so as to be arranged at a predetermined interval in the left-right direction, and left and right connected to the corresponding two feeding cases 42. A pair of powder body storage tanks 43, four supply pipes 44 as supply path constituting members A extending from the corresponding feeding case 42 toward the front lower side, and the extending ends of the corresponding supply pipes 44 are connected. It comprises four groovers 50 and the like.
When the connection frame 41 is connected to the left and right planting transmission cases 28 via a pair of left and right support arms 51 and fertilization is performed in accordance with seedling planting work, each grooving device 50 is placed at a predetermined position of the leveling float 23. It can equip with the seedling planting apparatus 4 by attaching.

  Then, with the working power from the seedling planting device 4, the elastically deformable rubber feeding roll 45 (corresponding to the feeding mechanism) housed in each feeding case 42 is driven, so that the granular material storage tank 43 is driven. The powdered fertilizer stored in the tank is fed out by a predetermined amount (amount entering the concave portion 45a of the feeding roll 45) and dropped and supplied to each grooving device 50 through each supply pipe 44. As shown in FIG. 3, although it is near each seedling planting location a1, a2, a3, a4 by the planting claw 34, each of which is laterally separated from each seedling planting location a1, a2, a3, a4 It is buried in the field mud at the feed positions b1, b2, b3, b4 for seedling planting work.

As shown in FIG. 1 and FIG. 2, the granular material storage tank 43 is manufactured separately from a tank main body 43 a that can store fertilizer for fertilization, or seed seeds coated with iron on the surface, and the tank main body 43 a. The bottom portion 43b is detachably connected to the lower portion of the tank body 43a.
As shown in FIGS. 5 and 6, the bottom portion 43b is bolted to the connecting frame 41, and the tank body 43a is detachably fitted to and supported by the bottom portion 43b.

The upper side of the bottom portion 43b communicates with the bottom of the tank body 43a, and the lower side of the bottom portion 43b communicates with the upper portion of the feeding case 42. Accordingly, the bottom portion 43b supplies the powder particles accommodated on the tank main body 43a side to the supply roll 45 inside the supply case 42 while guiding the powder particles, and the powder particles are supplied from the supply roll 45 by a predetermined amount. It is.
At this time, a regulating plate 46 that regulates the amount of powder supplied to the feeding roll 45 is detachably provided near the bottom of the bottom portion 43b.

As shown in FIGS. 6A and 6B, the restriction plate 46 is fixed to the bottom portion 43b near the bottom by a screw 46a, and the screw 46a is removed and the restriction plate 46 itself is removed. It is configured to be detachable.
The restriction plate 46 is formed with a notch 46b for passing the seed pod in a part of the plate. During the sowing operation, only the seed potato that has passed through the notch 46b is recessed 45a of the feeding roll 45. The portion other than the notch 46b is configured to block the passage of the seed pod.

When the granular material supply apparatus 40 is used as an apparatus for fertilization accompanying seedling planting work, the regulation plate 46 is used by being removed from the bottom portion 43b, and the granular material supply apparatus 40 is used for supplying seed meal accompanying seeding work. When used as an apparatus, the restriction plate 43b is mounted on the bottom portion 43b for use.
This is because the supply amount of seed pods at the time of sowing work is much smaller than the supply amount of fertilizer for general fertilization, and therefore, the supply amount to the supply roll 45 should be suppressed. Since it is possible to supply the granular material without drastically reducing the driving speed of the feeding roll 45, it is used as a means for maintaining the driving speed of the feeding roll 45 in an appropriate state so that the seeding operation can be performed stably. .

As shown in FIGS. 4 and 5, in the two feeding cases 42 on the left side of the machine body, the drive shaft 47 of each feeding roll 45 is provided by a single hexagonal shaft in the transverse direction of the machine body that is mounted across the feeding rolls 45 of both feeding cases 42. Is configured.
As shown in FIGS. 3 and 4, the drive shaft 47 includes a planting drive shaft via an output rod 53 and a one-way rotary clutch 54 from an interlocking member 52 connected across a pair of planting cases 36 on the left side. The power of 33 is transmitted.

  Also in the two feeding cases 42 on the right side of the machine body, the drive shaft 47 of each feeding roll 45 is constituted by a single hexagonal shaft in the lateral direction of the machine body that is mounted across the feeding rolls 45 of both feeding cases 42, and is the same as the left side. Further, the power of the planting drive shaft 33 is transmitted from the interlocking member 52 connected over the pair of planting cases 36 via the output rod 53 and the one-way rotation clutch 54.

(Drop position change means)
The drop position changing means B provided at the terminal end of the supply path constituting member A is configured as follows.

As shown in FIG. 7A, when performing the sowing operation, the groove generator 50 is removed, and a drop guide body 55 made of synthetic resin is attached to the lower end portion of the supply pipe 44 as the supply path constituting member A. It is designed to be detachable.
As shown in FIGS. 7A and 7B, the drop guide body 55 has an elastic engagement portion 56 for holding the supply pipe 44 on the upper side, and the lower end side of the drop guide body 55 is the lower end of the supply pipe 44. It is formed in the guide action part 57 which guides so that the granular material which falls may be slid down diagonally downward.
When the drop guide body 55 is mounted in this way, the supply pipe constituting member A is constituted by both the supply pipe 44 and the drop guide body 55, and the lower end of the drop guide body 55 is the supply path constituting member. This is the end position of A. When the seedling planting operation is performed with the drop guide body 55 removed, the supply pipe constituting member A is configured by the supply pipe 44 and the groove producing device 50.

The above-described drop guide body 55 is a seeding work in which the powder particles at the time of the seeding work guided by the drop guide body 55, that is, the planned dropping point of the seed pod corresponds to the passing trace of the planting claws 34 as shown in FIG. It is for determining the sliding direction of the granular material by the said guide action part 57 so that it may become the supply position c for use.
That is, at the time of sowing work, as shown in FIG. 2, fertilizer is supplied to the supply position b for seedling planting work that is distant to the lateral side of the seedling planting point a, which is a position where the seedling is planted in the field by the planting claws 34 in plan view. Than the case where it is supplied, the granular material falls toward the rear rather than the entry point into the mud of the planting claw 3 at the passage mark of the planting claw 34 which is the same position as the seedling planting site a. By mounting the drop guide body 55 on the supply pipe 44, the planned dropping position of the granular material is slid down so as to be close to the seedling planting position a, and is configured as a seeding supply position c.

If it demonstrates with the structure shown in FIG. 2, from the state which supplies the granular material with respect to each seedling planting work supply position b1, b2, b3, b4 to which fertilizer is supplied at the time of seedling planting work, at the time of sowing work, For example, the powder body (seed meal) supplied toward the supply position b1 for the seedling planting operation at the leftmost laterally outer position is the leftmost position that is the same as the seedling planting part a1 at the leftmost laterally outer part. The drop guide body 55 is mounted so that the drop direction is slightly toward the right side of the machine body so as to drop and supply the seeding work supply position c at the laterally outer portion.
Further, the granular material (seed meal) supplied toward the seedling planting work supply position b2 closer to the body side than the seedling planting work supply position b1 at the left lateral outer side position is placed at the leftmost lateral outer side part. The drop direction from the drop guide 55 is slightly off-left so as to drop and supply to the seeding work supply position c which is the same left and right direction place as the seedling planting part a2 and the inward side of the seedling planting part a1. Wear so that it is in the correct orientation.
Similarly, the granular material (seed meal) supplied toward the seedling planting work supply position b2 located on the right side of the seedling planting work supply position b2 on the inward side of the machine body is more than this. It is mounted so that the fall direction from the drop guide 55 is slightly outward so that it is dropped and supplied to the sowing operation supply position c which is the same lateral direction as the seedling planting location a3 on the right lateral side. .
Furthermore, the right and left side is the same as the right and left side seedling planting location a4 of the granular material (seeds) supplied toward the rightmost lateral outer location seedling planting supply position b4. The drop guide body 55 is mounted so that the drop direction is slightly toward the left side of the machine body so as to drop and supply the seeding work supply position c at the laterally outer portion.

  Then, at the time of seedling planting work, the drop guide body 55 is removed from the supply pipe 44, and the grooving device 50 is attached so that the granular material, that is, the fertilizer falls directly from the lower end of the supply pipe 44. The fertilizer that drops directly from the lower end of the supply pipe 44 is supplied to each seedling planting work position a1, a2, a3, a4 at the respective seedling planting work supply positions b1, b2. , B3, b4, the lower end position of the supply pipe 44 is set.

During the sowing operation, the fertilizer grooving device 50 attached to the leveling float 23 is removed and the sowing operation is performed. This does not mean that the presence of the grooving device 50 at the time of the sowing operation is a problem, but if this grooving device 50 is present, this is to avoid the formation of unnecessary concave grooves in the field. is there.
In other words, if there is a useless ditch, weeds can easily grow there after draining water, and jumbo snails (commonly known as Sukuringogai) are located near the seedlings and eat the seedlings. This is because a harmful effect is likely to occur.

[Groove former]
10 and 11 are grooves for grooving to be mounted on the lower surface side of the leveling float 23 to form a large groove that is deeper and wider than the groove formed by the fertilizer grooving device 50. A former 60 is shown. The groove forming device 60 is mounted on a predetermined portion of the leveling float 23 in consideration of the positional relationship with the rear wheel 11 so that the large groove is formed in the passage mark of the rear wheel 11. It is configured.

Specifically, the groove formed by the groove forming device 60 has a depth of about 8 cm and a lateral width of the upper part of the groove of about 10 to 12 cm. After the seedling planting operation is finished, Even if water is drained, water is stored only in the groove. In other words, soft seedlings immediately after seedling planting may be eaten by jumbo snails. Immediately after seedling planting, paddy paddy watering is zeroed and jumbo snails that have lived in paddy fields are formed by the groove molding device 60. It is for moving in the large groove formed.
After about 10 days, the seedling stalk has become sufficiently hard, and then the paddy field is flooded again. After that, the weeds that grow in the paddy field are softer than the seedling stalk. The nature of eating can be used for weeding, and it may be possible to slow down without using drugs.
In addition, since the possibility that wild birds, such as a duck, will fly when the said groove width is too large, it is desirable not to become so large from said grade.

The groove forming device 60 is formed of a thin sheet metal material. As shown in FIG. 10A and FIG. 11, an upper plate 61 for attachment is formed along the lower surface shape of the leveling float 23 so as to be applied to the lower surface side of the leveling float 23. A groove forming portion 62 is integrally provided on the lower side. The groove forming part 62 has a sharper portion on the front side like the tip of a ship, and is located on the rear side toward the lower side and extends rearward while extending in the left-right direction toward the rear side. The cross section of the groove to be formed is formed in an inverted trapezoidal shape with a wide upper part and a narrow bottom part.
A front locking portion 61a for locking to the front edge of the leveling float 23 is formed at the front end of the upper plate 61, and the front locking portion is formed at the rear end of the upper plate 61. A rear engaging portion 61b that is engaged with a rear end edge portion of the rear projecting portion 23C of the leveling float 23 is provided so as to elastically sandwich the leveling float 23 with 61a.

Therefore, when the groove forming device 60 is mounted on the leveling float 23, the front locking portion 61a of the upper plate 61 is first locked to the front edge of the leveling float 23, and then the rear wheel 11 passes. The leveling float is formed by elastically deforming the rear locking portion 61b that engages with the rear edge of the rearward projecting portion 23C of the leveling float 23 that is formed at the position in the left-right direction corresponding to the mark. 23 is completed.
When removing the groove former 60 from the leveling float 23, the groove former 60 can be removed by operating in the reverse order of the above procedure.

[Other Embodiment 1]
The drop position changing means B is not limited to one configured such that the drop guide body 55 having a sliding guide surface formed in a plate shape can be attached to and detached from the lower end portion of the supply pipe 44 as shown in the above-described embodiment. Instead, it may be configured as follows.
That is, as shown in FIGS. 8A and 8B, the drop position can also be obtained by fitting a cylindrical drop guide body 55 concentrically with the supply pipe 44 at the lower end of the supply pipe 44. The changing means B can be configured.
In this structure, the drop position changing means B can also be changed by turning the lower end side of the cylindrical drop guide body 55 around the cylinder axis p of the portion fitted to the supply pipe 44 to change the position. Can be configured. In this case, in a state where the lower end side of the drop guide body 55 is positioned at the supply position b for seedling planting work, the drop guide body 55 is inserted into the groove generator 50 and fertilizer is supplied to the groove marks by the groove generator 50. In the state in which the grooving device 50 is removed, the lower end side of the drop guide body 55 is behind the point of entry of the planting claw 3 into the mud at the passage mark of the planting claw 34 at the same position as the seedling planting site a. A drop position so that the supply position c for sowing work exists at the same position in the left-right direction of the body as the seedling planting location a by attaching the drop guide body 55 to the supply pipe 44 so that the powder particles fall toward Is set.

[Second embodiment]
As shown in FIG. 9, the lower end portion of the supply pipe 44 is disposed in an oblique posture so that the lower side in the left-right direction with respect to the aircraft traveling direction is closer to the seedling planting location a side, and with respect to the supply pipe 44 The drop position changing means B is also configured by fitting a cylindrical drop guide body 55 concentrically and making the cylindrical drop guide body 55 slidably adjustable with respect to the supply pipe 44. be able to.
With such a structure, as shown by the phantom line in the figure, the entire drop guide body 55 is externally fitted to the supply pipe 44 and is not extended below the lower end of the supply pipe 44. The powder for working can be supplied, and the powder for the seeding work can be supplied in a state where the lower end side of the drop guide body 55 extends downward from the lower end of the supply pipe 44 as shown by a solid line. It can be carried out.

[3 of another embodiment]
Various other structures can be adopted as the drop position changing means B. For example, although not shown, the tubular drop guide 55 may be attached and detached.
Further, the plate-like drop guide body 55 can be adjusted so as to be slidable in the direction of the cylinder axis with respect to the supply pipe 44, or around the horizontal axis in the direction intersecting the cylinder axis of the supply pipe 44. As a foldable structure, the lower end position of the drop guide body 55 may be changed.
Furthermore, the inclination angle of the sliding guide surface of the plate-like or cylindrical drop guide body 55 can be changed with respect to the horizontal plane, and the falling position can be changed by changing the sliding direction with respect to the horizontal plane. Also good.
In short, the drop supply position to the field of the granular material dropped and released from the supply pipe 44 is changed to the supply position b for seedling planting work and the supply position c for seeding work as described above, or a position close thereto. Any structure that can be adjusted is acceptable.

[4 of another embodiment]
The regulation plate 46 for suppressing the amount of powder supplied to the feed roll 45, which is the feed mechanism in the powder supply device 40, is not limited to the detachable structure as shown in the embodiment. For example, the supply amount to the feeding roll 45 side may be changed by changing the mounting posture of the restriction plate 46 itself.

[5 of another embodiment]
The groove forming device 60 is not limited to a metal plate material as shown in the embodiment, and may be configured using an appropriate material such as a relatively hard synthetic resin material. Moreover, the attachment method to the leveling float 23 is not limited to the structure using the elastic deformation of the metal plate, and any attachment method may be adopted.
The mounting position of the groove forming device 60 is preferably a position where a groove can be formed in the passage mark of the rear wheel 11 or the front wheel 10 of the rice transplanter, but is not necessarily limited to that position. You may set an attachment position to.

[6 of another embodiment]
In the said embodiment, although the form comprised so that the range covering all the lines of a planting line was leveled with the single leveling float 23 was described, not only this but the combination of several leveling floats 23 may be sufficient. The range extending over the planting line may be leveled. In this case, the groove forming device 60 may be used by being mounted on the leveling float 23 at the position where the wheel marks are leveled.

[7 of another embodiment]
When using the seed sow for sowing with the powder and particle supply apparatus 40 of the present invention, not only the iron-coated seed soot as shown in the embodiment but also a normal seed soak without any coating may be used. Is possible.
When using iron-coated seed potatoes, the mass of the seed potatoes becomes relatively large and it becomes easy to be buried in the mud. This is advantageous in that it can reduce the possibility of duck and wild birds pitting seeds.

Although this invention showed the example applied to the rear mount type rice transplanter which equipped the seedling planting apparatus 4 with which the back side of the traveling machine body was equipped with the granular material supply apparatus 40, it is not restricted to this, A granular material The present invention can also be applied to a mid-mount type rice transplanter in which the supply device 40 is mounted on a traveling machine body.
It is possible to carry out the sowing work using the rice transplanter of the present invention even when the sowing work is carried out in the dry paddy instead of the paddy field.

4 Seedling planting device 34 Planting claw 40 Powder and granular material supply device 44 Supply pipe 45 Feeding roll (feeding mechanism)
46 Restriction plate 50 Grooving device 55 Drop guide body A Supply path component B Dropping position changing means a seedling planting position b seedling planting work supply position c seeding work supply position

Claims (6)

Rice planting provided with a seedling planting device provided with planting nails and a powder body supply device provided with a feeding mechanism for feeding granular materials by a predetermined amount and capable of supplying the powder material near the seedling planting site by the planting nails Machine,
Attach a supply path constituting member that guides the granular material fed from the feeding mechanism to the vicinity of the planned fall point in the granular material feeding device,
A rice transplanter comprising a drop position changing means capable of changing a position of a terminal end of the supply path constituting member in a left-right direction intersecting with a traveling direction of the machine body.   The drop position changing means is a supply position for seedling planting work in which the falling part of the powder supplied from the terminal position of the supply path constituting member is the lateral side of the seedling planting part by the planting claws of the seedling planting device, The rice planting according to claim 1, wherein the terminal position of the supply path constituting member can be changed so that it can be switched to a supply position for sowing operation to drop and supply the granular material toward the passing mark of the planting claw. Machine.   The drop position changing means is constituted by a drop guide body equipped to slide the powder particles fed from the feeding mechanism of the powder material supply device in a predetermined direction at the terminal portion of the supply path constituting member. The rice transplanter according to claim 1, wherein the drop guide body is configured to be detachable with respect to a terminal portion of the supply path constituting member.   The drop position changing means guides the powder particles to fall to the supply position for seeding work in a state where the drop guide body is mounted on the terminal portion of the supply path constituent member, and the drop guide body is the terminal end of the supply path constituent member. The rice transplanter according to claim 3, wherein the rice transplanter is configured to drop the granular material to a supply position for seedling planting work in a state of being removed from the portion.   The drop position changing means is constituted by a drop guide body equipped to slide the powder particles fed from the feeding mechanism of the powder material supply device in a predetermined direction at the terminal portion of the supply path constituting member. The rice transplanter according to claim 1, wherein the rice transplanter is configured to be capable of changing a sliding guide direction or a sliding terminal position of the dropping guide body.   6. The rice transplanter according to claim 1, wherein the powder supply device includes a regulation plate capable of restricting a supply amount of the powder to the feeding mechanism.

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