JP2002315407A - Direct seeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out direct seeding by using a fertilizing delivery structure of a direct seeder utilizing a sulky rice transplanter equipped with a hopper for receiving grains in the rear and upper part of a traveling machine, the delivery structure for delivering the grains by a delivery roll from the lower end of the hopper and a blower for transporting the delivered grains backward by air. SOLUTION: This direct seeder is constituted by installing a ditching machine for seeding to a seedling planting device and delivering rice seeds received in a hopper 31 by a delivery mechanism 32 and transporting them by air, connecting to be communicating a feed hose for guiding the rice seeds with the ditching machine for seeding, closing a part of a grain inlet port in the delivery mechanism 32 with a covering body 51 to control the passage of rice seeds narrower than that of a fertilizer and installing a bridge-preventing material 55 vibrated by rotating a delivery roller R to the aforesaid passage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direct sowing machine configured to directly sow paddy rice using a riding rice transplanter.

[0002]

2. Description of the Related Art As a direct sowing machine of this type, as disclosed in, for example, Japanese Patent Application Laid-Open No. 10-295116, a seedling planting device is connected to a rear portion of a traveling machine body via an elevating link mechanism. A hopper that accommodates the granular material above the rear, a feeding mechanism that feeds the granular material from the lower end of the hopper by a feeding roll, and a blower that wind-feeds the fed granular material toward the seedling planting device are provided. A direct sowing machine using a riding rice transplanter has been proposed.

[0003]

SUMMARY OF THE INVENTION
When used as the original rice transplanter, it is a form of rice transplanter with a fertilizer that fertilizes at the same time as planting by storing granular fertilizer in the hopper. It can be in the form of a machine, and it is possible to perform direct sowing at relatively low cost using a rice transplanter, but since the feeding mechanism is basically configured for fertilization, In addition, it is difficult to perform suitable feeding for direct sowing only by replacing the fertilizer with seed rice as a feeding target, and improvement is required in practical use.

[0004] In other words, in direct sowing, it is necessary to feed the seeds in small quantities evenly and seamlessly with high precision and without interruption. However, for seeds to be directly sowed in paddy fields, caliper paddies in which the coating material is coated on the paddy body are used. It is considerably larger than fertilizer, and it is essential to feed it out to avoid the occurrence of clogging and the like.

[0005] In direct sowing, a seeding groove is formed on a rice field by using a sowing device and seed rice is supplied. Then, the seeding groove is covered with soil and backfilled. It is susceptible to floating runoff and damage by wild birds, and precise soil covering is required.

The present invention has been made in view of the above point, and provides a direct sowing machine capable of suitably performing direct sowing using a fertilizer feeding structure of a rice transplanter. The main purpose is to

[0007]

Means for Solving the Problems [Structure, operation and effect of the invention according to claim 1]

(Structure) According to the first aspect of the present invention, a seedling planting device is connected to a rear portion of a traveling machine body via a lifting link mechanism, and a hopper for accommodating a granular material above a rear portion of the traveling machine body, and a lower end of the hopper. A direct sowing machine using a riding rice transplanter that is provided with a feeding mechanism that feeds out the granular material from the part by a feeding roll, and a blower that conveys the fed granular material backward by wind force, wherein the seedling planting apparatus is used. A seeding grinder is attached to the hopper, and the seed rice as the granular material accommodated in the hopper is fed by the feeding mechanism and is conveyed by wind power by the blower. It is configured to communicate with and connect to the working groove device, close a part of the granular material receiving port in the feeding mechanism with a detachable cover body, and restrict the passage flow passage of the seed rice more than the passage passage for fertilizer. hand There is a feature.

(Action) According to the above configuration, when the rice seedling is loaded into the seedling planting apparatus and the rice planting operation is performed, the cover body is removed and the granular material receiving port in the feeding mechanism is opened, so that the seedling is accommodated in the hopper. The granular fertilizer can be fed by a predetermined amount. When direct sowing is performed, the passage of seed rice is limited to a passage smaller than the passage for fertilizer by attaching a cover body and closing a part of the granular material receiving port in the feeding mechanism. The seed rice can be fed little by little without rotating the feeding roll at a particularly low speed.

(Effects) Therefore, according to the first aspect of the present invention, it is possible to feed out seed rice in small amounts without decelerating the rotation of the feeding roll, and to use a feeding mechanism originally configured for fertilization. Direct sowing can be performed suitably.

[Structure, operation and effect of the invention according to claim 2]

(Structure) According to a second aspect of the present invention, in the first aspect of the present invention, a part of the granular material receiving port is closed by the cover body in a roll width direction.

(Function / Effect) According to the above configuration, by removing the cover body, the granular material receiving port can be fully opened in the roll width direction, and the fertilizer can be fed smoothly by effectively utilizing the roll width. In addition, by attaching the cover body, it is possible to feed out the seed rice little by little using only a part of the granular material receiving port in the roll width direction, and it is possible to easily switch between the fertilization mode and the direct seeding mode.

[Structure, operation and effect of the invention according to claim 3]

(Structure) The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, a part of the granular material receiving port is closed by the cover body in a roll circumferential direction.

(Operation / Effect) According to the above configuration, by removing the cover body, the granular material receiving port can be fully opened in the roll circumferential direction, and the fertilizer can be smoothly fed out by effectively utilizing the roll width. In addition, by attaching the cover body, it is possible to feed out the seed rice little by little using only a part of the granular material receiving port in the roll circumferential direction, and it is possible to easily switch between the fertilization mode and the direct sowing mode.

[Structure, operation and effect of the invention according to claim 4]

(Structure) According to a fourth aspect of the present invention, there is provided a hopper for connecting a seedling planting device to a rear portion of a traveling machine body via an elevating link mechanism, accommodating a granular material above a rear portion of the traveling machine body, and a lower end of the hopper. A direct sowing machine using a riding rice transplanter that is provided with a feeding mechanism that feeds out the granular material from the part by a feeding roll, and a blower that conveys the fed granular material backward by wind force, wherein the seedling planting apparatus is used. A seeding grinder is attached to the hopper, and the seed rice as the granular material accommodated in the hopper is fed by the feeding mechanism and is conveyed by wind power by the blower. A bridging prevention member which is communicatively connected to the working groove device and which vibrates with the rotation of the feeding roll is provided at the granular material receiving port of the feeding mechanism.

(Operation / Effect) According to the above configuration, the bridge preventing member provided at the granular material receiving port vibrates with the rotation of the feeding roll, thereby avoiding the occurrence of the bridging phenomenon at the granular material receiving port, and providing an interruption. Without seeding, the occurrence of a lack of stock can be prevented beforehand.

[Structure, operation and effect of the invention according to claim 5]

(Structure) According to a fifth aspect of the present invention, in the invention of the fourth aspect, a part of the granular material receiving port in the feeding mechanism is closed with a detachable cover body, and a passage for passing the seed rice is fertilized. And the bridge preventing member is provided in the restricted passage.

(Action) According to the above configuration, even if the granular material receiving port is made small in order to feed out the seed rice little by little, the bridge preventing member provided in the granular material receiving port vibrates with the rotation of the feeding roll, Avoid the occurrence of a bridging phenomenon at the granular material receiving port.

(Effects) Therefore, according to the invention of claim 5, it is possible to accurately feed out the seed rice little by little without causing interruption due to clogging.

[Structure, operation and effect of the invention according to claim 6]

(Structure) According to a sixth aspect of the present invention, in the fifth aspect of the present invention, a part of the bridge preventing member is brought into sliding contact with the peripheral surface of the feeding roll.

(Operation / Effect) According to the above configuration, a part of the bridge preventing member is repeatedly engaged with the feeding concave portion formed on the peripheral surface of the feeding roll, so that the entire bridge preventing member vibrates. The bridge preventing member can be effectively vibrated with a simple structure without adding a special member.

[Structure, operation and effect of the invention according to claim 7]

(Structure) According to a seventh aspect of the present invention, there is provided a hopper for connecting a seedling planting device to a rear portion of a traveling machine body via an elevating link mechanism, accommodating a granular material above a rear portion of the traveling machine body, and a lower end of the hopper. A direct sowing machine using a riding rice transplanter that is provided with a feeding mechanism that feeds out the granular material from the part by a feeding roll, and a blower that conveys the fed granular material backward by wind force, wherein the seedling planting apparatus is used. A seeding grinder is attached to the hopper, and the seed rice as the granular material accommodated in the hopper is fed by the feeding mechanism and is conveyed by wind power by the blower. A grooving roll, which is connected to the working groove device and forms a drainage groove by penetrating into the rice field surface, is provided in a vertically movable and biased state.

(Operation / Effect) According to the above configuration, a drainage ditch can be formed on the rice field at the same time as direct sowing, and drainage can be reliably and promptly performed when water is dropped on the field at a later date. The seedlings grown by direct sowing can be well managed.

[Structure, operation and effect of the invention according to claim 8]

(Structure) The invention according to claim 8 is the invention according to claim 7, wherein a soil covering is provided behind the sowing device, and the soil covering is moved with the upward movement of the grooving roll. The feature is that the grooving roll and the earth covering tool are linked so as to enhance the earth covering function.

(Action) According to the above configuration, the seeding groove is hard to collapse in a hard muddy field, but the soil covering function of the soil covering device is high in conjunction with the movement of the groove cutting roll to a high position with little sinking. Therefore, the backfill of the seeding groove is sufficiently performed. Also, in the field where the mud is soft, the seeding groove is likely to collapse, but since the grooving roll sinks greatly and moves to a lower position, the soil covering function of the earth covering device becomes low, so the seeding site is It is not unduly disturbed.

(Effects) Therefore, according to the invention of claim 8, backfilling by suitable covering soil without excess or deficiency is performed according to the mud hardness of the field, and floating and outflow of seed rice and wild birds It is possible to prevent the occurrence of inconveniences that are rare.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an overall side view of a direct sowing machine according to the present invention, and FIG. 2 shows a plan view thereof. This direct sowing machine is configured using a riding type rice transplanter with a fertilizer application device, and includes a four-wheel drive type traveling machine body 3 having a steerable front wheel 1 and a non-steerable rear wheel 2. At the rear, a six-row planting seedling planting apparatus 4 is connected via a lifting / lowering link mechanism 6 having a parallel quadruple link structure driven up and down by a hydraulic cylinder 5 so as to be able to move up and down and to be rollable. It has a basic structure in which a seeding device A, which also serves as a fertilizer, is provided at the rear part.

An engine 8 is mounted at the front of the traveling machine body 3 and its output is transmitted to a hydrostatic continuously variable transmission (HST) 9 capable of switching between forward and reverse, and the shift output is transmitted to a transmission case 10. After the gears are further input to the gears, the power is transmitted to the front wheels 1 and the rear wheels 2 and the working power taken out of the transmission case 4 is transmitted to the seedling planting device 4 via the transmission shaft 11. Has become.

In the seedling planting apparatus 4, there are six sets of seedling rests 12 on which seedlings are placed and reciprocally move sideways with a constant stroke, and seedlings are cut out from the lower end of the seedling rest 12 by one plant and planted. A rotary planting mechanism 13, three leveling floats 14 for leveling the planned planting site in the field, and the like are provided, and the planting mechanism 13 is provided on the left and right sides of three planting cases 15 arranged in parallel. Two sets of each are mounted.

Although a detailed structure is omitted, the seedling planting apparatus 4 configured as described above is subjected to up-down control and rolling control following the rice field T in order to stabilize the planting depth at each strip. It has become so.

Next, the seeding apparatus A will be described. The seeding device A utilizes a fertilizer application device, and includes a hopper 31 that stores seed rice (in the case of fertilization, granular fertilizer), four sets of feeding mechanisms 32 that feed seed rice from a lower portion of the hopper 31 by a predetermined amount, A blower 33 that generates a conveying wind for wind-conveying the fed seed rice, an electric motor 34 that drives the blower 33, a blow duct 35 that distributes the generated conveying air to each of the feeding mechanisms 32, and moves the seed rice that is wind-conveyed to the rear. And a supply hose 36 for guiding the supply to
In the case of the direct sowing operation, as shown in FIG.
The seeding part 6 extends below the seedling rest 12 of the seedling planting device 4 and extends rearward.
The communication is connected to.

As shown in FIG. 7, the left and right ends of the four feeding mechanisms 32 perform feeding for two rows, and the feeding mechanism 32 at the center is formed as shown in FIG.
As shown in FIG. 9, the set is fed out by only one of the two feeds, so that six feeds are made as a whole while using four sets of feed-out mechanisms 15 in units of two. It has become.

The hopper 31 is a one-piece resin molded product having a large-capacity section 31a for two sections located on the left and right ends by partitioning the inside, and a pair of small-capacity sections 31b for one section located inside. Is configured as The small-capacity section 31b is recessed at the front portion from the large-capacity section 31a, and the rear portion of the driver's seat 7 enters and is disposed here. in this way,
By introducing the hopper 31 whose central portion is recessed, the seeding apparatus A is compactly arranged without a large gap between the seedling gantry 12 and the operation unit, and the overall length of the machine is reduced. It is. In addition, on the rear wall of the hopper 31, each section 3
An optical sensor 38 for detecting the remaining amount of fertilizer in 1a and 31b is provided. Further, in the model of the 8-row specification, the feed of two rows is performed by each of the four sets of the feeding mechanisms 32, so that the feed of eight rows is possible. Each of the two compartments is replaced with a larger one.

Each feeding mechanism 32 has a feeding recess a on its outer periphery.
The roll case 41 is formed so that a number of feeding rolls R formed at predetermined pitches along the circumferential direction are rotatable about a horizontal horizontal axis.
And a driven gear 43 provided at the outer end of the roll shaft 42 drives a drive shaft 44 horizontally and horizontally suspended over each feeding mechanism 32. The gear 45 is driven to rotate by being engaged with the gear 45. The unwinding roll R has three sets of roll portions r1 to r3 having different unwinding amounts per rotation, and two sets (six) of roll portions r1 to r3 are symmetrically juxtaposed in parallel. 42 is fitted to the outside so as to be integrally rotatable.

The roll case 41 has a vertically divided structure including an upper case 41A connected to the lower end of the hopper 31 and a lower case 41B connected to the lower end of the upper case 41A. The roll case 41 is integrally formed below the lower case 41B. The front ends of the two outlet pipes 41C are inserted and connected to the air duct 35, and the supply hose 36 is connected to the rear end of each outlet pipe 41C. Also, the feeding roll R is supported so that the axis of the roll shaft 42 is positioned on the division surface of the roll case 41, and the lower case 41B is connected to the upper case 41A.
, The feeding roll R can be easily removed. In the center two sets of feeding mechanisms 32 for feeding one line, the supply hose 36 is connected to only one of the outlets e for the two lines, and the rear end of the outlet e for stopping the feeding is closed by a cap 46. You. Further, each roll case 41 is formed with a discharge port 48 that is opened and closed by a swing shutter 47, so that the seed rice (or fertilizer) remaining in the hopper 31 can be discharged and collected in the lower abdomen of the machine body. Further, the lower portion of the upper case is narrowed down in a funnel shape, and inside the narrowed portion, each roll portion r of the payout roll R is provided.
Five partition walls 49 slidably contacting the outer periphery of 1 to r3 are formed in parallel.

As shown in FIGS. 7 and 8, in the feeding mechanism 32 at the left and right ends for performing two feedings, a partition wall 49 is provided.
Outermost passage t of the six passages t formed by
9 is used for the passage of the seed paddy, and as shown in FIG. 9, in the central two sets of feeding mechanisms 32 that perform one feeding, among the six paths t formed by the partition wall 49, Only the outermost one of the passages t is used as a passage for the seed rice.

That is, in the feeding mechanism 32 for two-row feeding, the cover 51 formed in the shape of a chevron is fitted and mounted in the receiving opening formed on the upper part of the feeding roll R, and the center excluding the outermost passage is provided. The four passages t on the side are closed. A flange portion 51a extends from the left and right ends of the cover body 51, and a resin brush base 53 in which a brush 52 for cutting off which is in sliding contact with the outer periphery of a roll portion r1 of the feeding roll R is planted downward is formed by the flange. The lower surface of the portion 51a is connected with a pair of screws 54, and the brush base 53 is fitted into the outermost passage t from above, so that only a part of the outermost passage t in the circumferential direction is opened, and from here. Seed paddy flows down and is fed by the roll portion r1 of the feeding roll R.

At the opening of the outermost passage t, there is provided a bridge prevention member 55 for preventing the seed rice from being clogged by the bridge phenomenon. This bridge prevention member 55
Is a screw formed by bending a spring wire, and one of the screws 5 for attaching the brush stand 53 to the flange portion 51a of the cover body 51.
4 and one end thereof is fixed to the opening end of the passage t. Then, the free end side is inserted into a hole 56 formed on the slope of the cover body 51. Has been extended to interfere. The bridge prevention member 55 configured as described above is rotated by the rotation of the feeding roll R, so that the leading end 55
a slides on the outer periphery of the roll portion r2, and is repeatedly engaged and vibrated in the feed-out recess a.
In this way, the occurrence of bridges in the building is avoided.

In the single-sheet feeding mechanism 15, the above-mentioned chevron-shaped cover body 51 is connected to the feeding roll R.
Are fitted to receiving ports formed in the upper part of the, and the central five passages t except one of the outermost passages t are closed. That is, among the flange portions 51a provided on the left and right ends of the cover body 51, the brush stand 53 is attached to one of the flange portions 51a on the feeding side in the same manner as described above, and the other of the closed sides is closed. Flange 51a
A cover plate 57 for closing the other outermost passage t is fixed with screws 54, and only a part of the outermost passage t in the circumferential direction is opened. Is fed out by a roll portion r1 in FIG.

The drive shaft 44 in the feeding mechanism 15 configured as described above is driven by the power taken out of the traveling system. That is, as shown in FIGS. 1 and 5, a transmission shaft 17 for rear wheel drive for transmitting power from the transmission case 10 to the rear axle case 16 at the rear of the vehicle body is disposed below the traveling body 3. A power take-out case 18 for distributing power from the transmission shaft 17 to the seeding apparatus A is provided. The power take-out case 18 is provided with a crank arm 19 that is driven to rotate around the horizontal axis by receiving the power of the traveling system, and the crank arm 19 and a drive shaft 44 for driving a feeding mechanism.
The passive arm 20 is connected to the passive arm 20 via a push-pull rod 21 so that the passive arm 20 is reciprocally oscillated with the rotation of the crank arm 19. Although the detailed structure is omitted, the passive arm 20 and the drive shaft 44 are interlocked and connected via one-way driving means using a well-known pair of one-way rotating clutches. The drive shaft 44 is moved by the downward movement.
6 is configured to be constantly rotated clockwise in FIG. 6 and to continuously rotate the feeding roll R in a predetermined direction at a predetermined angle (counterclockwise in FIG. 6) in a pulsating manner.

Next, the structure of the seeding section 37 will be described. At the rear ends of the planting cases 15 at the left and right ends, mounting plates 61 made of a thick plate material in a vertical position are connected and fixed, and the seeding frame 63 made of a square pipe is connected to the left and right mounting plates 61 via a parallel quadruple link mechanism 62. Are horizontally supported so as to be able to move up and down in parallel.
Are connected and fixed, and six supply hoses 36 which are led out from the feeding mechanism 32 and extend below the seedling placing table 12 and extend rearward are connected to the groove generators 64. In addition,
The parallel quadruple link mechanism 62 has an adjustable stopper bolt 6
Zero limits its descending limit.

A pair of left and right support shafts 65 each consisting of a hexagonal axis are rotatably supported on the upper part of the seeding section frame 63 horizontally and horizontally via a pair of left and right legs 66.
At the end of the support arm 67 extending rearward from three places on the left and right of 5, sheet metal covering tools 68 for backfilling the seeding groove at the rear of the seeding groove generator 64 are mounted three by three. Further, an operating arm 69 is extended forward from one of the left and right legs 66 supporting the support shaft 65 so as to be vertically swingable,
A grooved roller 70 formed in an abacus shape is attached to the tip of the roller so as to freely rotate, and the operating arm 69 is elastically urged downward by a spring 71, so that the grooved roller 70 is elastically applied to the rice field T. Is pressed. In addition, the support shaft 6
The operation arm 72 and the operation arm 69 extending forward so as to be integrally rotatable with the operation arm 5 are connected to each other by a rod 73, and the vertical swing of the operation arm 69 is transmitted to the operation arm 72 to support the earth covering 68. The arm 67 is swung in the direction opposite to the operation direction of the operation arm 69.

Therefore, the harder the mud is, the smaller the depth of the grooved roller 70 penetrating into the rice field T becomes.
Swings upward, whereby the support arm 67 swings downward, and the earth covering device 68 is strongly pressed against the rice field surface T, and the function of backfilling the seeding groove is enhanced, so that the earth is reliably covered. Conversely, as the mud is softer, the surface T
The operating arm 69 swings downward because the depth of penetration of the seeding portion becomes large, whereby the support arm 67 swings upward and the pressing of the soil covering device 68 against the rice field surface T becomes weak, and the seeding site is covered with soil. Unreasonable disturbing by the tool 68 is avoided.

In the case of a soft field, if the grooving roller 70 goes deeper than necessary, the earth covering tool 68
Therefore, the lower swing limit of the operation arm 72 is restricted by contact with the stopper bolt 74, and the limit can be adjusted by the stopper bolt 74.

Here, the seeding unit 3 configured as described above
7, a front frame 75 of the parallel quadruple link mechanism 62 is engaged so as to embrace the mounting plate 61 from the left and right, and is hooked to the mounting plate 61 via a pair of upper and lower pins 76. And the front frame 75
By engaging the buckle 77 provided on the mounting plate 61 with the hook fitting 78 provided on the mounting plate 61, the entire seeding portion 37 is mounted and supported over the left and right planting cases 15, and as shown in FIG. By removing it from the metal fitting 78, the entire seeding portion 37 can be easily removed.

Although the fertilizer is not applied in the direct sowing machine described above, as shown in FIG.
The granular fertilizer accommodated in the hopper 81 is fed out by a set amount by a feeding mechanism 82 of 6-row specification driven by the power from the planting mechanism 13, and a hose 84 is fed to a fertilizer application groove device 83 attached to the leveling float 14 in a pair. It is also possible to mount the fertilizer B to be supplied via the fertilizer and to embed the granular fertilizer on the side of each sowing line.

When the original seedling planting operation is to be performed, as shown in FIG. 17, the entire seeding portion 37 is removed, and a fertilizer application groove device attached to the feeding mechanism 32 and each leveling float 14 in a pair. The fertilizer 91 is communicated with a separately provided short supply hose 92 for fertilization, and the granular fertilizer stored in the hopper 31 is buried in the side of the planted seedling. In addition,
When the hopper 31 is used for fertilization, FIGS.
As shown in the figure, the cover body 51 is removed, a fertilizer brush 93 is fitted and mounted, and the shutter plate is slidable back and forth in six passages t formed by the partition wall 49. s is plugged in,
Each of the passages t can be independently opened and closed to adjust the feeding amount.

[Brief description of the drawings]

FIG. 1 is an overall side view of a direct seeding machine according to the present invention.

FIG. 2 is an overall plan view of the direct seeder according to the present invention.

FIG. 3 is an overall side view of the seeding unit.

FIG. 4 is an overall plan view of a seeding unit.

FIG. 5 is a rear view of the seeding device.

FIG. 6 is a longitudinal side view of the feeding mechanism.

FIG. 7 is a longitudinal sectional front view of a feeding mechanism of a two-row feeding type.

FIG. 8 is a plan view of a feeding mechanism of a two-row feeding type.

FIG. 9 is a longitudinal sectional front view of a feeding mechanism set to a single-row feeding specification.

FIG. 10 is an exploded perspective view showing a cover body and its attached parts.

FIG. 11 is an enlarged side view of a seeding part.

FIG. 12 is a plan view and a side view of a disassembled seeding portion attachment point.

FIG. 13 is a side view showing a mounting structure of the grooving roll and the earth covering.

FIG. 14 is a plan view showing a mounting structure of a grooving roll.

FIG. 15 is a front view showing a part of the grooving roll mounting structure.

FIG. 16 is a side view showing the rear part of a direct sowing machine having a form provided with a fertilizer application device.

FIG. 17 is an overall side view of a rice transplanter with a fertilizer device in a rice transplanting operation mode.

FIG. 18 is a longitudinal sectional side view of a feeding mechanism set to a fertilization specification.

FIG. 19 is a vertical cross-sectional front view of a feeding mechanism set to a fertilization specification.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 traveling machine body 4 seedling planting device 6 elevating link mechanism 31 hopper 32 feeding mechanism 33 blower 36 supply hose 51 cover body 55 bridge prevention member 64 seeding groove generator 68 covering material 70 grooving roll R feeding roll

 ──────────────────────────────────────────────────の Continued on the front page (72) Yoshiaki Sonoda 64, Ishizukitamachi, Sakai City, Osaka Prefecture Inside the Kubota Sakai Works (72) Inventor Akio Kashii 64, Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Co., Ltd. Inside the factory (72) Inventor Tetsuya Matsumura 64 Ishizukitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Factory (72) Inventor Noboru Higashio 64 at Ishizukitamachi Sakai City, Osaka Prefecture Inside Kubota Sakai Factory (72) Invention Person Kimihiko Otori 64 Ishizu-Kitamachi, Sakai City, Osaka Prefecture F-term in Kubota Sakai Works (reference) 2B054 AA04 AA05 AA07 AA20 BA01 BB01 CA04 CB08 CB11 DC08 DD03 DD13 DD24 DD26 DE02

Claims (8)

[Claims] 1. A seedling planting device is connected to a rear part of a traveling machine body via an elevating link mechanism, and a hopper for accommodating granules is provided above a rear part of the traveling machine body. A direct sowing machine using a riding rice transplanter, which is provided with a feeding mechanism for discharging and a blower for wind-transporting the fed granular material toward the rear, wherein a seeding groover is mounted on the seedling planting device. The seed paddle as a granular body accommodated in the hopper is configured to be fed by the feed mechanism and conveyed by wind power by the blower, and a supply hose for guiding the seed paddle conveyed by wind is connected to the seeding groover, A direct sowing machine characterized in that a part of the granular material receiving port in the feeding mechanism is closed with a detachable cover body, and the passage passage of the seed rice is restricted more than the passage passage for fertilizer. . 2. The direct sowing machine according to claim 1, wherein a part of the granular material receiving port is closed by the cover body in a roll width direction. 3. The direct sowing machine according to claim 1, wherein a part of the granular material receiving port is closed by the cover body in a roll circumferential direction. 4. A seedling planting device is connected to a rear portion of the traveling machine body via an elevating link mechanism, and a hopper for storing the granular material above the rear portion of the traveling machine body, and the granular material is fed from a lower end of the hopper by a roll. A direct sowing machine using a riding rice transplanter, which is provided with a feeding mechanism for discharging and a blower for wind-transporting the fed granular material toward the rear, wherein a seeding groover is mounted on the seedling planting device. The seed paddle as a granular body accommodated in the hopper is configured to be fed by the feed mechanism and conveyed by wind power by the blower, and a supply hose for guiding the seed paddle conveyed by wind is connected to the seeding groover, A direct sowing machine characterized in that a bridging prevention member that vibrates with the rotation of the feeding roll is provided at the granular material receiving port of the feeding mechanism. 5. The direct sowing machine according to claim 4, wherein a part of the bridge preventing member is brought into sliding contact with a peripheral surface of the payout roll. 6. The direct sowing machine according to claim 4, wherein a part of the granular material receiving port in the feeding mechanism is closed by a detachable cover body, and the seed rice passes through the passage for fertilizer. A direct sowing machine characterized in that it is configured so as to be restricted more than a flow path, and the bridge prevention member is provided in the restricted passage. 7. A seedling planting device is connected to a rear portion of the traveling machine body via an elevating link mechanism, a hopper for storing the granular material above the rear portion of the traveling machine body, and the granular material is fed from a lower end of the hopper by a roll. A direct sowing machine using a riding rice transplanter, which is provided with a feeding mechanism for discharging and a blower for wind-transporting the fed granular material toward the rear, wherein a seeding groover is mounted on the seedling planting device. The seed rice as the granular material accommodated in the hopper is fed by the feeding mechanism and is conveyed by the blower by wind power, and a supply hose that guides the wind-conveyed seed rice is connected to the seeding groove device and communicated therewith. A direct sowing machine characterized in that a grooving roll, which enters a rice field to form a drainage groove, is arranged in a vertically movable and biased state. 8. The direct sowing machine according to claim 7, wherein a soil covering is provided behind the seeding groover,
A direct sowing machine, wherein the grooving roll and the covering tool are linked so as to enhance the soil covering function of the covering tool with the upward movement of the grooving roll.