JP2002095312A - Powder feeding apparatus for rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure capable of rationally controlling the guiding a feed hose from a delivery mechanism to a relief valve. SOLUTION: A mid-fertilization apparatus is provided with a fertilizing hopper and a delivery mechanism immediately after a driver's seat and with a blower for the pneumatic transfer of the delivered fertilizer to a furrow opener 52 of the planting part through a hose 14. A relief valve 83 opening to effect the degassing operation when the air pressure in the hose 14 increases above a prescribed level is placed in the middle of the feeding hose 14 in a state to be engaged with a frame 8 of the planting part at the back of a seedling table 12. A guide member 88 for the part of the delivery mechanism side relative to the relief valve 83 of the feed hose 14 is attached to a stay 85 for attaching the relief valve 83.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder and granule feeder for a rice transplanter, which is capable of spraying powder and granules such as fertilizers and chemicals. The present invention also relates to a technology for rationalizing each part in a powder and granular material supply device by using an existing structure as much as possible.

[0002]

2. Description of the Related Art A first prior art is provided with a feeding mechanism for feeding a predetermined amount of granular material by a predetermined amount as the feeding roll rotates in a fixed direction, and a hopper for supplying the granular material to the feeding roll. As shown in Japanese Patent Application No. 11-80847 filed earlier, a powdery or granular material supply device of a rice transplanter is configured by combining a crank swinging passive arm and two one-way clutches. It has been proposed that the feed roll rotates and the fertilizer is fed so that the fertilizer can be fed regardless of the upward swing or downward swing of the passive arm.

[0003] A second prior art is provided with a plurality of feeding units each including a hopper for storing fertilizer and a feeding mechanism for feeding a predetermined amount of fertilizer sent from the hopper to a starting end of a fertilizing hose. As a rice transplanter arranged side by side in the left and right direction, there is one shown in Japanese Patent Application No. 11-78021 filed earlier. This is because the partial duct connecting the feeding mechanism and the fertilizing hose is made of a soft material such as rubber, and the connecting hose connecting the partial ducts and the partial duct and the blower is made of a hard material such as plastic, A single air duct through which the wind generated by the air flow is formed by interconnecting a plurality of components.

[0004] -Third prior art- A rice transplanter provided with a hopper for storing powders and granules and a feeding mechanism for feeding out the powders dropped and supplied from the hopper by a predetermined amount is disclosed in, for example, Japanese Patent Laid-Open No. -327638
No. in the official gazette. In general, the hopper in the fertilizer applicator, which is a granular material supply apparatus, is necessarily formed in a funnel shape that expands inevitably in order to supply the fertilizer downward by gravity.

[0005] -Fourth prior art- A delivery mechanism for feeding out the particles sent from the hopper is provided in the body at the rear side of the driver's seat, and the particles delivered from the delivery mechanism are planted through a supply hose. Japanese Patent Application Laid-Open No. H11-89325 discloses a known apparatus for supplying powder and granules of a rice transplanter which is configured to transfer wind power to a groove generator provided in an attachment portion. In this device, when the wind pressure in the supply hose becomes stronger than a predetermined value, the relief valve that can be opened to release the air is locked on the planting section frame supporting the seedling mounting table on the rear side of the seedling mounting table. On the side of the supply hose.

[0006]

The first prior art has the advantage that the feed-out operation of the fertilizer can be carried out by any of the upward and downward swings of the passive arm, but the amount of the fertilizer supplied per unit time. As means for changing the passive arm, a large number of connecting holes for the drive rod in the passive arm are formed, and the connecting hole is selected to change the radius of the passive arm at the drive rod connecting point. The reciprocating swing angle was changed.

[0007] Therefore, in order to relatively finely control the amount of fertilizer, it is necessary to form a large number of connecting holes, and it is easy to increase the size of the passive arm, and since there are a large number of holes, the connection of the drive rod may be incorrectly performed. There is a concern that the adjustment may not be performed correctly due to this. This is the first problem.

In the second prior art, a single air duct is formed by interconnecting a partial duct made of a soft material and a connecting hose made of a hard material. Can be directly fitted without the interposition of rubber grommets, and can be divided into multiple parts, which is advantageous for clogging and assembling as compared with a part duct made of hard material and a connecting hose made of soft material However, there is an advantage that the number of components can be reduced.

However, since a partial duct made of a soft material is arranged at the end opposite to the blower mounting side, when the worker goes out to the side of the driver's seat to supply seedlings or the like, the partial duct is placed with his feet. There is a possibility that the hook may be hooked and the connection with the connecting hose may be disconnected or deformed. In particular, auxiliary steps are often provided at the side of the driver's seat.
In the case of a multi-row rice transplanter such as a single-row or a ten-row, the inconvenience tends to occur easily. This is the second problem.

In the third prior art, since the funnel-shaped hopper is only supported on the lower end feeding mechanism side, there is no particular problem with a relatively small-sized one.
It is expected that as the size increases due to the increase in capacity or the like, it becomes difficult to cope with a cantilever support structure having only the lower end portion in terms of supporting strength. This is the third problem.

In the fourth prior art, since the relief valve existing in the middle of the supply hose is attached to the planting section frame, the supply hose having a long length is regulated so that it is difficult for the supply hose to move inadvertently in all directions. It is possible to However, since the position of the planting portion frame is at a relatively low position close to the groove generator, the length from the feeding mechanism to the relief valve in the supply hose is still long, and it has become necessary to regulate the portion. . This is the fourth problem.

An object of the present invention is to provide the above-described first to fourth problems by improving and streamlining each part in a powder and granular material supply apparatus of a rice transplanter, and to provide a more sophisticated product. Is to do.

[0013]

According to a first aspect of the present invention, there is provided a feeding mechanism for feeding a predetermined amount of a granular material by a predetermined amount according to the rotation of a feeding roll in a predetermined direction, and a method for feeding the granular material to the feeding roll. And a hopper for supplying the powder, the first auxiliary arm interlocked with the feeding roll via a first one-way clutch, and operates in the same rotational direction as the first one-way clutch. A second auxiliary arm interlocked with the feeding roll via a second one-way clutch, a passive arm reciprocatingly swinging linked to a rotating arm driven and rotated by a single rod, and a passive arm and a first arm. A first interlocking mechanism that interlocks and rotates the auxiliary arm in the same direction and a second interlocking mechanism that interlocks and rotates the passive arm and the second auxiliary arm in opposite directions are provided. No. 1 by rocking Only way clutch is empty drive, and, together with only the second one-way clutch by the swinging to the other passive arm is configured to be air-driven, first
And one of the two interlocking mechanisms in which the operation of one of the two interlocking mechanisms is disabled, and the two driving states in which both the first and second interlocking mechanisms operate.

According to the first aspect of the present invention, in the one-sided driving state, only one of the first and second interlocking mechanisms operates, so that the number of rotations of the payout roll per unit time is equal to the first number.
Since both the two driving states in which both the second interlocking mechanism and the second interlocking mechanism are operated, switching between these two states makes it possible to greatly change the feeding amount of the granular material per unit time. Therefore, it is possible to increase the number of gears or reduce the number of drive rod mounting holes drilled in the passive arm as compared to the case where only one of the single drive state and both drive states can be performed. Become.

According to a second aspect of the present invention, in the first aspect, the second interlocking mechanism comprises a balance arm interlockingly connected to the passive arm and a rod interlockingly connecting the balance arm and the second auxiliary arm. In addition to the configuration, a rod fixing portion capable of locking and maintaining the balance arm side connection portion of the rod is provided, and the balance arm side connection portion is connected to the balance arm in both driving states, and the balance arm side connection portion is connected to the rod fixing portion. It is characterized in that it is configured to be able to switch between the connected single drive state.

According to the second aspect of the invention, when the connecting portion of the rod, which is a component of the second interlocking mechanism, on the balance arm side is connected to the balance arm, both driving states can be obtained. The state is obtained. That is, the replacement of the rod, which is a component part of the interlocking mechanism, is claimed.
The effect of the above configuration can be obtained, and only the rod fixing portion is required as a newly required dedicated configuration.

According to a third aspect of the present invention, there is provided a dispensing system including a hopper for storing the granular material and a dispensing mechanism for dispensing the granular material sent from the hopper to the start end of the granular material transfer path by a predetermined amount. A plurality of parts are arranged in the left and right direction of the machine body behind the driver's seat in a rice transplanter granule supply device, in order to feed the granules delivered to the start end to the granule transfer path by wind force. , While providing a wind duct for distributing the wind generated by the wind device to a plurality of starting ends,
A single blower comprising a soft material partial duct provided for each of a plurality of feeding portions in a state of being connected to the starting end, and a hard material connection duct for sequentially connecting and connecting these partial ducts and a blower device Route, and at the position immediately before the outermost partial duct located on the outermost side in the lateral direction of the aircraft among the partial ducts,
A guard member for the endmost duct is provided.

According to the third aspect of the present invention, the guard member is provided immediately before the outermost partial duct made of a soft material located at the end in the left-right direction. When walking on the fuselage frame or on an auxiliary step, if it is likely to collide with the endmost duct, the foot will collide with the guard member and the endmost duct will be protected. Become. In other words, minor modifications to provide a guard member only for the endmost duct eliminates the possibility of the endmost duct being deformed or disconnecting from the connecting hose, and eliminating clogging and assembly by dividing the ventilation duct into multiple parts. It is possible to obtain the advantage of the attachment property and the advantage that the number of components can be reduced.

According to a fourth aspect of the present invention, there is provided a powder and granular material supplying apparatus for a rice transplanter, comprising a hopper for storing the granular material and a feeding mechanism for feeding a predetermined amount of the granular material dropped and supplied from the hopper. , Wherein the hopper is formed in a funnel shape having a larger cross-sectional area at the upper part than at the lower end part supported by the feeding mechanism, and an intermediate support member for supporting the upper and lower intermediate parts of the hopper is provided. It is.

According to the structure of the fourth aspect, the following operation is provided. Since the funnel-shaped hopper is a so-called "head-and-head", when the inside is filled with the granular material, the center of gravity is in an upwardly balanced state that is shifted upward, and only the lower end is used for the feeding mechanism. In the supported cantilevered state, it tends to be unstable or stress concentrated at the lower end. Therefore,
By providing the intermediate support member for supporting the upper and lower intermediate portions of the hopper, the hopper can be supported by both ends by the lower end portion and the upper and lower intermediate portions, and the hopper can be sufficiently supported. Further, since the intermediate support member supports the upper and lower middle portions of the hopper, it is preferable in that the support member can be disposed without protruding laterally more than the hopper, as compared with the case of supporting the upper end.

According to a fifth aspect of the present invention, a feeding mechanism for feeding out the powder and granules sent from the hopper is provided in the body at the rear side of the driver's seat, and the powder and grains fed from the feeding mechanism are supplied via a supply hose. In the powder and granular material supply device of a rice transplanter, which is configured to wind-transfer to a trench maker arranged in a planting section,
When the wind pressure in the supply hose becomes higher than a predetermined value, the supply hose on the rear side of the seedling mounting table is opened with the relief valve capable of releasing air and being locked to the planting section frame supporting the seedling mounting table. And a guide member for the feeding mechanism side portion of the supply hose relative to the relief valve is attached to the planting portion frame.

According to the fifth aspect of the present invention, the means for transferring the granular material by wind force using the supply hose requires the provision of a relief valve for releasing excess wind. This is a means to be used for the mounting portion of the hose guide member. That is, since the guide member for the long supply hose portion located between the feeding mechanism and the relief valve is attached to the planting section frame for mounting the relief valve, the existing configuration without providing a new attaching section. Can be used to guide the supply hose.

[Effect] In the powder and granular material supply apparatus for rice transplanter according to the first and second aspects, the passive arm for rotating the payout roll can be freely switched between a single drive state and a both drive state. In addition, it is possible to increase the number of stages for setting the amount of powdered material to be fed out, or to simplify the connection and disconnection operations of the passive arm and the drive rod.

In the powder and granular material supply apparatus for rice transplanter according to the second aspect, a relatively simple modification in which a rod fixing portion is added and a rod constituting an interlocking mechanism is freely replaceable is provided.
There is an advantage that the effect of the configuration of claim 1 can be obtained.

According to the third aspect of the present invention, a simple modification in which a guard member is provided immediately in front of the endmost duct to deform the endmost duct or connect it to the connecting hose. It is possible to reduce the number of parts while taking advantage of the ease of clogging by multiple divisions of the air duct and the ease of assembling without eliminating the possibility of disconnection of the air duct.

According to the fourth aspect of the present invention, the intermediate supporting member is supported by the intermediate supporting member to support the upper and lower intermediate portions of the hopper in a double-supporting state, so that the intermediate supporting member is stretched laterally from the hopper. It was able to support the strength sufficiently without wasting space to put it out.

According to a fifth aspect of the present invention, the guide for restricting the swing movement of the supply hose is provided by a planting portion frame which is a support portion of a relief valve provided at an intermediate portion of the supply hose. Since the supporting portion of the member can be used, a reasonable solution that can deal with the problem without adding a new configuration is obtained.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, an engine 3 and a transmission case 4 are provided at the front of an airframe having a pair of left and right front wheels 1 and a pair of left and right rear wheels 2 that can be steered. In addition, a driving unit 5 is formed at the center of the fuselage, and a seedling planting device 7 is connected to a rear portion of the fuselage via a link mechanism 6 so as to be capable of ascending and descending operations, thereby constituting a riding type rice transplanter. The seedling planting device 7 is configured to plant six rows, and three planting transmission cases 8
A rotating case 9 rotatably supported on both left and right sides of the planting transmission case 8, a pair of planting claws 10 provided at both ends of the rotating case 9, three ground floats 11, and a seedling mounting table 1.
2 and so on.

Next, the fertilizer applicator A will be described. Figure 1
As shown in FIG. 6, the fertilizer applicator A includes a hopper 13 that stores fertilizer that is a granular material, and a fertilizer hose that is a fertilizer transfer path for fertilizer that flows down from the hopper 13 (an example of a supply hose). A feeding mechanism 15 for feeding a predetermined amount to a funnel portion 20 which is a starting end of the fertilizer 14, a groove generator 52 for supplying the fertilizer sent by the fertilizing hose 14 to the field, and a fertilizer hose fed by the wind to the fertilizer fed to the funnel portion 20. The blower 16 is an example of a blower (an example of a wind power device) that sends the air to the blower 14, and a blow duct 17 that distributes and supplies the wind generated by the blower 16 to a total of six fertilizing hoses 14.

As shown in FIG. 6 and FIG.
The feeding roll R formed with a large number of concavities 24a for injecting fertilizer on the outer periphery along the circumferential direction is provided below the fertilizer discharge port of the hopper 13 with a funnel portion (refer to the "starting point of the powder and granular material supply path of claim 3"). An example of the “unit” is disposed in the roll case 18 so as to be rotatable above the position 20. Feeding roll R
Are driven and rotated by the engagement of a driven gear 19G integrally formed therewith with a drive gear 21G of a drive shaft 21 to which power is input.

As shown in FIG. 8 and FIG.
A total of six partial rolls r1 to r3 having two types of widths and two types of depths are externally fitted on a hollow rotary shaft 19 having a driven gear 19G formed at one end so as to integrally rotate. It is configured. First partial rolls r1, r1 at the center in the left-right direction;
The second partial rolls r2 and r2, which are the second from the center, have the same concave portion 24a with a small width and depth, and the third partial rolls r3 and r3 at the left and right ends have large widths and depths. It is set to have a recess 24a.

Each of the partial rolls r1 to r3 has a partition wall 24b formed only on one of the left and right sides. The partition walls 24b are arranged side by side so that they are all oriented in the same direction. The partition wall 24b of the roll r1 is arranged so as to coincide with the left and right centers as a feeding mechanism. Each of the recesses 24a is axially partitioned by disposing one partition ring 23 between the one endmost third partial roll r3 and the roll case 18.
Reference numeral 22 denotes a brush that acts on each of the partial rolls r1 to r3.

As shown in FIGS. 8 to 11, a shutter mechanism S including first to third partial shutters s1 to s3 which can be pushed and moved and returned above the feeding roll R.
Is arranged. The shutter mechanism S enables the fertilizer application amount per unit time to be adjusted in a plurality of stages by selectively setting whether to supply fertilizer to any one or more of the first to third partial rolls r1 to r3. Things.

Each of the partial shutters s1 to s3 has the same structure. As shown in FIG. 12, when the second partial shutter s2 is used, the fertilizer from the hopper 13 is prevented from flowing down to the feeding roll R. And a bar-shaped operation unit 25 that is pushed and pulled by being picked with fingers. The blocking plate 26 is made of a spring plate and is elastically deformable in the vertical direction. The operating portion 25 extends forward through an L-shaped insertion hole 79 formed in the roll case 18 when viewed in the front-rear direction. Have been.

When the operating section 25 is picked up (forward) and pulled out, the shut-off plate 26 is positioned on the feeding roll R so that the fertilizer supply is shut off (see the left side of FIG. 11). If it is pinched (rearward) and pushed in, the blocking plate 26 bends upward and is housed along the inner wall surface of the roll case 18, and only the thin operation unit 25 is located on the feeding roll R and the opening posture in which fertilizer is supplied. (See the right side of FIGS. 8 and 11).

For example, the first and second partial rolls r1, r
When the shutters s1 and s2 with respect to 2 are pulled out to the closed position and the third shutter s3 is pushed in to the open position, fertilization is performed in a state where fertilizer enters only the concave portion 24a of the third partial roll r3. Further, when all the partial shutters s1 to s3 are pushed in, the fertilizer enters the concave portions 24a of all the partial rolls r1 to r3, so that a large amount of fertilizer is fed out per unit time. By pushing or pulling the three partial shutters s1 to s3 alone or in combination in this manner, the amount of fertilizer fed out per unit time can be adjusted in five stages (r1 or r2, r3, r1 + r2, r1 or r2 + r).
3, r1 + r2 + r3).

Four sets of the feeding portions k, each of which has the above-structured feeding mechanism 15 formed as a two-piece integrated type, are arranged side by side on the left and right, and two sets of the inside of the four feeding portions k are fed. The parts k, k operate only one set of the feeding mechanism 15 with one of the two sets of shutter mechanisms S, S fully closed.
It is set for the article. That is, as shown in FIG. 10, two sets of 1
The feed-out portions k, k for rows are arranged to constitute a fertilizer applicator A for 6 rows.

The hopper 13 includes two large-volume hopper sections 13a, 13a at the left and right ends, and a single small-volume hopper section 1 at the inner side.
3b and 13b are integrally formed and made of resin. The front-rear width of the small-capacity hoppers 13b, 13b is short at the rear of the driver's seat 27, and
The front and rear widths of the large capacity hoppers 13a, 13a are
7 is configured to be long around the left and right sides, and the capacity corresponding to the amount of fertilizer for each of the two-row and one-row is set. The opening / closing lid 28 of the hopper 13 is an integral product covering four hopper portions 13a, 13b, 13b, 13a.
As shown in FIG. 7, it is swingably opened and closed at a fulcrum Z provided at the rear part.

The driving structure of the feeding mechanism 15 will be described. As shown in FIGS. 7 to 10, one drive shaft 21 having a hexagonal cross section is rotatably supported over the boss portions 18 b of the four roll cases 18. The driving gear 21G thus fitted is rotatably fitted to the outside. The shift rotator 29 is fitted around the drive shaft 21 so as to rotate and slide freely, and includes a spring 30 for urging the shift rotator 29 toward the occlusal side of the drive gear 21G. In order to disengage the shift rotator 29 from the drive gear 21G, a swingable shift member 31 is provided.
Is provided. In other words, the shift member 31 is forcibly rocked by pulling a wire (not shown) to constitute the fertilizer application clutch 33 capable of blocking transmission of the rotational power of the drive shaft 21 to the feeding mechanism 15.

As shown in FIGS. 1 and 4, at the lower part of the vehicle body,
A traveling transmission shaft 35 for transmitting power from the transmission case 4 to a rear axle case 34 at the rear of the fuselage is arranged in front and rear, and a transmission case 36 for distributing power from the traveling transmission shaft 35 to the fertilizer applicator A is replaced with a rear axle case 34. Is provided immediately before. The transmission case 3 surrounding the traveling transmission shaft 35
6 is equipped with a bevel gear mechanism (not shown), and a drive arm 37 attached to its output shaft is equipped on one of the left and right sides.

On the other hand, as shown in FIGS. 7, 13 and 14, the drive shaft 21 is equipped with a passive arm 39 via a first one-way clutch 38. And a conversion mechanism 41 that converts both the upward swing and the downward swing of the passive arm 39 into rotation of the drive shaft 21 in a fixed direction. That is, the drive shaft 21 is continuously rotated in a fixed direction while having one passive arm 39 which is reciprocally driven and oscillated by the rotating drive arm 37.

The conversion mechanism 41 swings around a fulcrum Y with a second auxiliary arm 43 fitted on the drive shaft 21 via a second one-way clutch 42 that transmits only rotational force in the same direction as the first one-way clutch 38. A free bell crank 44, a first rod 45 interlocking the first auxiliary arm 39 a, which is the front end of the passive arm 39, with the bell crank 44, and a second rod interlocking the bell crank 44 with the second auxiliary arm 43 46.

That is, when the passive arm 39 swings upward, as shown in FIG. 13A, the first one-way clutch 38 rotates integrally to rotate the drive shaft 21 in the direction of arrow A. The rotation of the second auxiliary arm 43 that rotates in the second direction causes the second one-way clutch 42 to idle. Further, when the passive arm 39 swings downward, the first one-way clutch 38 that rotates in the direction of arrow B idles as shown in FIG.
The rotation of the second auxiliary arm 43, which rotates in the direction of arrow A, causes the second one-way clutch 42 to rotate integrally and rotate the drive shaft 21 in the direction of arrow A as well.

Here, the driving structure of the driving shaft 21 is summarized as follows. That is, the first auxiliary arm 39 that is interlocked with the feeding roll R via the first one-way clutch 38
a, a second auxiliary arm 43 interlocked with the feeding roll R via a second one-way clutch 42 operating in the same rotational direction as the first one-way clutch 38, and a single rotating arm 37 driven and rotated. A passive arm 39 which is interlocked and linked by a rod 40 and reciprocates; a first interlocking mechanism a1 for interlockingly rotating the passive arm 39 and the first auxiliary arm 39a in the same direction; a passive arm 39 and a second auxiliary arm And a second interlocking mechanism a2 for interlocking rotation of the passive arm 39 with the second arm 43 so that only the first one-way clutch 38 is idle-driven by the swing of the passive arm 39 to one side, and the passive arm 39
, The second one-way clutch 42 alone is driven idle.

The conversion mechanism 41 includes a first interlocking mechanism a1 and a second
And a first interlocking mechanism a1.
Is constituted by a passive arm 39 integrally formed with a first auxiliary arm 39a via a boss portion. The second interlocking mechanism a2 includes first and second rods 45 and 46 and a bell crank (an example of a balance arm) 44.

In addition, a single driving state in which the operation of the second interlocking mechanism a2 is disabled and a both driving state in which both the first and second interlocking mechanisms a1 and a2 are operated can be switched freely. That is, as shown in FIG. 7 and FIG.
Bell crank side connection (balance arm side connection)
Stay that can hold and maintain 46a (an example of a rod fixing part)
32 is provided on the main support frame 58, and when the bell crank side connecting portion 46a is connected to the bell crank 44, the two-way clutches 38 and 42 are operated in both driving states as described above, and the bell crank side Connecting part 46
When a is connected to the stay 32, the second one-way clutch 42 is locked so as not to move, and a single drive state in which only the first one-way clutch 38 operates.

If the second rod 46 is changed from the double drive state to the single drive state by replacement, the rotation amount of the drive shaft 21 accompanying the reciprocating movement of the rod 40 becomes half, and the feeding mechanism 15
, The feed amount per unit time can be halved.

As shown in FIG. 4, FIG. 5, and FIG. 19, the blower duct 17 is a partial duct made of a soft material such as rubber which is provided for each of four sets of the feeding portions k in a state of being connected to the funnel portion 20. D
1 and a connection duct D2 made of a hard material such as a PE resin or a PP resin for sequentially connecting and connecting the partial duct D1 and the blower 16 to form a single ventilation path.
The connecting duct D2 is composed of three intermediate connecting ducts 49 for connecting and connecting the adjacent partial ducts D1 to each other, and a starting end connecting duct 50 for connecting and connecting the partial duct 48 closest to the air blower and the blower 16. It is composed of four parts.

The partial duct D1 is composed of three partial ducts 48, 48 on the upper side of the blower, a partial duct 51 on the lower side of the blower integrally formed with the lid 51b, and a second partial duct 47 from the lower side of the blower. It is composed of types. Then, in order to equalize the wind force supplied to each of the funnel portions 20 in each of the feeding portions k, these partial ducts 51, 47, and 4 are used.
Protrusions 51a, 47 protruding into the air flow paths in 8, 48
a, 48a, 48a are integrally formed. Blower side 2
The two projections 51a and 47a are the same projection, but the two projections 48a on the upstream side of the blower are larger than these projections.

That is, when the intake area of the wind in the ventilation duct 17 is the same, the wind pressure increases toward the leeward side, and the wind per unit time tends to be large. It has been found that it is effective to provide a throttle inside the duct and reduce the duct cross-sectional area on the windward side as far as the intake port on the downstream side of the air blow.

Therefore, the projections formed on each of the four partial ducts D1 may be increased in order from the windward side. However, if this is done, all the four partial ducts D1 will be different parts, and the mold cost will increase. There are disadvantages such as easy part management and assembly errors. Therefore, the large projection 48
a, and two means of arranging two partial ducts 48, 47 (51) each having the small projections 47a, 51a, for equalizing the air flow to each funnel 20 and eliminating the disadvantages described above. Is planned.

In the feeding section k, the wind intake ports 14a, 14a, which are the starting ends of the fertilizing hoses 14, are arranged very close to each other, so that the wind intake port 14a on the leeward side is inserted deeper into the air duct 17. As described above, the positional difference is provided, so that the air volume at the adjacent air intakes 14a, 14a is also made uniform. Further, since the partial duct D1 is made of rubber, and each intake port 14a can be directly fitted and connected without a gap, the sealing material such as rubber packing, which was conventionally required, has been successfully omitted.

As shown in FIG. 5 and FIG. 8, of the four partial ducts 51, 47, 48, and 48, the outermost partial duct located on the outermost side in the lateral direction of the body opposite to the side where the blower 16 exists. Immediately before the position 51, a guard member 76 for the endmost partial duct 51 is provided. The guard member 76 is formed by bending a bar in a downward U-shape,
The main support frame 58 is projected forward so as to surround the front side of the main frame 58.
Is fixed to an enclosing frame 77 which is supported by the The horizontal portion 76a of the guard member 76 is just
It is positioned so as to be at the same height level as the center of the cylinder, and is set so as to be able to effectively protect the places where collision is most likely.

As shown in FIGS. 15 to 17, the blower 16 mounted on the left side of the fuselage is of a centrifugal type in which an impeller 54 rotationally driven by an electric motor 53 is accommodated in a casing 55 having a split structure. The casing 55
Is formed with a downwardly directed suction port 55a and a downwardly directed rightward exhaust port 55b. The exhaust port 55 b is configured to be inserted into the start end side of the start end side connection duct 50.

As shown in FIGS. 5, 6, and 18, the bracket 5 attached to the casing 55 has a substantially U-shape in side view.
6 to the front side of the starting end side connection duct 50 (the electric motor 53
Side), that is, the vertical axis portion of the support pipe 57 on the side of the body frame, that is, a vertically rotatable outer fitting. As a result, the blower 16 is configured such that the exhaust port 55b is inserted into and connected to the start end side connection duct 50, and the blower 16 is rotated forward from the operation position to connect the exhaust port 55b and the start end side connection duct 50. Can be freely changed to an open and retracted posture (see the phantom line in FIG. 18) in which the connection connection portion is exposed by releasing the connection.

Next, the support frame of the fertilizer applicator A will be described. As shown in FIGS. 4 to 6, the support frame f for the fertilizer application device includes a main support frame 58 that integrally supports the four feeding portions k, and a main and sub-frames that fix the main support frame 58 to the body. It is composed of mounting frames 59 and 60 and the above-described bearing pipe 57.

The main support frame 58 is formed of a channel material extending left and right in a substantially rearward U-shaped cross section with an upper side protruding rearward from a lower side, and each roll case 18 is fixed by two mounting bolts 61. . Large and small hoppers 13a,
Each of 13b is equipped with a total of four fertilizer remaining amount sensors 62 for detecting that the amount of remaining fertilizer is low, and a main support frame for guiding the left and right wire harnesses 63 and 63 to the body. It is arranged using the space inside 58 (see FIG. 8).

The main support frame 58 is composed of a main mounting frame 59 at the left and right center welded to the main supporting frame 58 and a total of two sub mounting frames 60, 60 bolted to the left and right sides thereof.
And are supported by the body frame F. The main attachment frame 59 is formed by integrating a pair of left and right stay portions 59a, 59a, and a downward U-shaped pipe portion 59b extending over the stay portions 59a, 59a, and is made of sheet metal for supporting the driver's seat 27 and the like. It is bolted to the vertical frame 64. The sub-mounting frame 60 is made of a plate material that is raised in a state of being bent backward by 90 degrees, and is bolted to a support member (for supporting the fender 65) 67 welded to the rear frame 66.

The lower end of the support pipe 57 is bolted to a bracket 66a hanging down from the rear frame 66, and the upper end of the lower end is fitted to an arm member 58a welded to the left end of the main support frame 58 so as to project forward. And pinned. Bracket 56 supporting blower 16
Is connected to the bearing pipe 5 via the upper and lower grommets 68, 68.
7 and is positioned by a washer 69 welded to the bearing pipe 57.

As shown in FIGS. 3 to 6, an intermediate support member 78 for supporting the upper and lower intermediate portions of the substantially funnel-shaped hopper 13 is provided. The intermediate support member 78 is formed of a pipe material which is bent and formed in a plan view shape along the hopper shape to restrict the forward movement of the hopper 13 and is positioned on the front side. The vertical pipes 80, 80 are supported upright on the body frame. Rubber cushion rolls 81 are wound around the left and right ends of the intermediate support member 78, and the cushion rolls 81 are directly in contact with and supported by the hopper 13. Also, the intermediate support member 78
The hopper 13 is arranged along the outer surface of the constriction start point, and is prevented from protruding as far as possible from the upper part of the hopper 13 which protrudes to the front, rear, left and right.

On the lateral side of the seedlings planted by the planting claws 10, there is provided a groove-making device 52 for feeding fertilizer to the rice field while forming a groove. Are mounted on each of them. Left and right outside 2
In the pair of feeding sections k, k, each feeding mechanism 15 and two groove generators 52 are connected by two fertilizing hoses 14,
In the two sets of left and right inner feeding portions k, k, one feeding mechanism 15 and one groove making device 52 are connected by one fertilizing hose 14.

With the above structure, the rotating case 9 of the seedling planting device 7 is driven to rotate by the power of the PTO shaft 70, and the seedlings are alternately taken out of the seedling mounting table 12 by the pair of planting claws 10 and planted on the rice field. Seedlings are planted.
At the same time, the drive arm 37 is driven by the power of the traveling transmission shaft 35.
The reciprocating motion of the rod 40 due to the rotational motion of the
The rotation of the drive shaft 21 is converted into the rotation of the drive shaft 21 in a certain direction by 1 to drive the feeding mechanism 15.

Then, the fertilizer from the hopper 13 enters the concave portion 24 a of the feeding roll R, and the fertilizer is fed to the funnel 20 by the rotation of the rotating shaft 19. The blower 16 blows air through the blower duct 17 through the funnel 17. The fertilizer is supplied to the fertilizer application hose 14 by the high pressure wind,
, And fertilizer is supplied to the ditch of the field formed by the ditch generator 18 to perform the fertilization operation.

As shown in FIG. 13, the connecting position of the passive arm 39 with the rod 40 is configured to be freely changeable. By changing the connecting position, the swing angle of the passive arm 39 with respect to the reciprocation of the rod 40 is changed. And the drive shaft 21
By changing the rotation speed of the feeding roll R, the amount of the fed fertilizer can be adjusted.

Each clutch (not shown) capable of transmitting and disconnecting power to and from one planting transmission case 8 (a pair of rotating cases 9), and each member for transmitting and disconnecting each transmission clutch. A clutch lever (not shown) is provided. As shown in FIG. 9, the operation arm 31 swingable around the axis of the fixed portion of the feeding portion k has its end engaged with the shift rotating body 29, and each of the clutch levers (not shown). ) And the operation arm 31 are connected by a wire (not shown).

Thus, for example, when the respective clutch levers of the right planting transmission case 8 are operated to the transmission blocking side and the respective clutches of the right planting transmission case 8 are subjected to the transmission blocking operation, the right planting transmission is performed. The pair of rotating cases 9 of the case 8 are stopped, and the two right plantings are not planted, and the drive shaft 1 of the fertilizer feeding portion k corresponding to the two right plantings is not planted.
5 stops and the supply of fertilizer to the two right streaks stops.

As shown in FIG. 8, a fertilizer discharge port 71 is formed immediately below the shutter mechanism S in front of the brush 22, and is provided by a switching plate 72 which can swing around the horizontal axis W. Is openable and closable. Outlet 71
Is connected to a discharge hose 74 via a merging path 73. During normal seedling planting operation, the switching plate 72 is operated to the closed position, and all the fertilizer from the hopper 13 is supplied to the feeding mechanism 15. When the switching plate 72 is operated in the open position with the blower 16 and the fertilizer applicator A stopped, for example, when the seedling planting operation is completed, the fertilizer remaining in the hopper 13 may be discharged through the discharge hose 74. it can.

By the way, the feeding part k has two funnel parts 2.
Basically, a two-row integrated type provided with two sets of roll cases 18 corresponding to the widths 0, 20 and the width thereof is provided. Part 2
0 is disabled. That is, as shown in FIG. 10, one set of three partial rolls r1 to r3 is omitted, and two fertilizer hoppers 13b at the left and right center are omitted.
In 13b, an inclined bottom surface 75 is additionally formed so as to have a supply port width for one set of the partial rolls r1 to r3.

As shown in FIGS. 20 and 21, when the wind pressure in the supply hose 14 becomes stronger than a predetermined value, the relief valve 83 which can be opened to release the air is connected to the supply hose 14 on the back side of the seedling mounting table 12. And a relief valve 83 is locked to a lower connecting bar 82C of the planting portion frame 89. The relief valve 83 is connected to the supply hose 1
A branch passage 83B branching obliquely upward and diagonally from the cylindrical main body 83A to which the wire 4 is externally connected is formed, and a cap 84 biased by its own weight is placed over the tip of the branch passage 83B. A pair of flanges 83a, 83a having opposing surfaces that are parallel to each other are formed on the cylinder main body 83A by integral molding, and a stay 85 fixed to the lower connecting bar 82C is fitted between the flanges 83a, 83a. connect. The end surface of the stay 85 is set so as to abut or be close to the cylinder main body 83A, thereby performing the function of positioning and preventing rotation.

A guide member 88 for a portion of the supply hose 14 closer to the feeding mechanism 15 than the relief valve 83 is attached to the planting portion frame 89. That is, a long guide member 88 is formed by bending a spring wire, and a root portion thereof is bolted to a stay 85 and a loop portion 88 for guiding the supply wire 14 through the supply hose 14.
a is formed at the tip. As shown in FIG. 22, the loop portion 88a has an oval or elliptical shape which is slightly long in front and rear in a plan view, and is capable of absorbing the back and forth movement of the supply hose 14 accompanying the elevation of the planting portion. , Higher than the center of the rear wheel 2.

As described above, by guiding the supply hose 14 with the guide member 88, interference with the twelfth seedling placement return spring 86 and the rear wheel 2 can be prevented, and the supply hose can be connected in the shortest distance. In addition to the above, it is possible to expect an effect that it can be used as a guide for cables for other mechanical devices and that the appearance is improved.

The operation of the relief valve 83 is as follows. In other words, when the groove generator 17 enters the mud layer and becomes substantially closed, there is no place for the blower 20 to escape the wind, and in some cases, it is possible to blow out the fertilizer or mud by saying "gobo, gobo!" Yes, there is a possibility that the planting field may be damaged, but in such a case, the cap 84 rises and swings by the wind pressure so that the cap 84 rises up, and only the wind pressure comes off without leakage of the fertilizer, so that the above-described inconvenience can be avoided. . When the wind pressure decreases, the cap 84 descends and swings by its own weight, and returns to the original lid state.

[Alternative Embodiment] The one-side drive that makes the first auxiliary arm 39a side of the first rod 45 freely attachable to a fixed object and disables the operation of one of the first and second interlocking mechanisms a1 and a2. The state and both driving states in which both the first and second interlocking mechanisms a1 and a2 operate may be configured to be freely switchable.

[Brief description of the drawings]

FIG. 1 is a side view of a riding rice transplanter.

FIG. 2 is a plan view of a riding rice transplanter.

FIG. 3 is a sectional plan view of a fertilizer hopper.

FIG. 4 is a rear view of a fertilizer application unit.

FIG. 5 is a front view of a fertilizer application unit.

FIG. 6 is a left side view of the fertilizer application unit.

FIG. 7 is a side view showing the drive structure of the feeding mechanism.

FIG. 8 is a sectional side view showing the structure of a feeding mechanism portion.

FIG. 9 is a cross-sectional view showing the structure of a feeding portion.

FIG. 10 is a cross-sectional view showing the structure of a single-row feeding portion.

FIG. 11 is a plan view showing a shutter mechanism.

FIG. 12 is a perspective view showing the structure of a partial shutter.

FIG. 13 is a side view showing a conversion mechanism for driving the feeding mechanism.

14 is a partially cutaway plan view of the conversion mechanism shown in FIG.

FIG. 15 is a sectional view of a blower.

FIG. 16 is a side view of a blower.

FIG. 17 is a rear view of the blower.

FIG. 18 is a plan view showing a blower support structure.

FIG. 19 is a cross-sectional plan view showing the structure of an air duct.

FIG. 20 is a side view of the main part showing the arrangement structure of the supply hose.

FIG. 21 shows a relief valve for fertilizer, (a) is a front view,
(B) is a side view

FIG. 22 is a plan view showing a supply hose guide portion of the guide member.

FIG. 23 is a partially cutaway plan view showing a fertilizer application hopper for eight-row planting and a supporting member thereof.

[Explanation of symbols]

 7 Planting part 12 Seedling stand 13 Hopper 14 Powder and granular material transfer path 15 Feeding mechanism 16 Wind power device 17 Blast duct 20 Start end 27 Operating seat 32 Rod fixing part 37 Rotating arm 38 First one-way clutch 39 Passive arm 39a First Auxiliary arm 40 Rod 42 Second one-way clutch 43 Second auxiliary arm 44 Balance arm 46 Rod 46a Balance arm side connecting part 51 End part duct 52 Groove unit 76 Guard member 83 Relief valve 88 Guide member 89 Planting part frame D1 Partial duct D2 Connecting duct R Feeding roll a1 First interlocking mechanism a2 Second interlocking mechanism k Feeding unit

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A01C 15/04 A01C 15/04 (72) Inventor Tetsuya Matsumura 64 Ishizukitamachi, Sakai-shi, Osaka Kubota Corporation F-term in Sakai Works (reference) 2B052 BC05 BC08 BC09 BC16 CA14 DA02 EA02 EA12 EB08 EB12 EC02 EC13 2B060 AA01 AC03 BA04 BA07 BA09 BB07 BB08 BB09

Claims (5)

[Claims] A powder for a rice transplanter, comprising: a feeding mechanism for feeding a predetermined amount of granular material by a predetermined amount as the feeding roll rotates in a fixed direction; and a hopper for supplying the granular material to the feeding roll. A granule supply device, comprising: a first auxiliary arm that is interlocked with the feed roll via a first one-way clutch; and a second one-way clutch that operates in the same rotational direction as the first one-way clutch. A second auxiliary arm that is interlocked with the feeding roll, a passive arm that is interlockedly connected to a rotating arm that is driven and rotated by a single rod, and that reciprocates and swings, the passive arm and the first auxiliary arm are mutually the same. A first interlocking mechanism that interlocks and rotates in the direction, and a second interlocking mechanism that interlocks and rotates the passive arm and the second auxiliary arm in opposite directions, and swings to one of the passive arms. The first one Only the one-way clutch is idle-driven, and only the second one-way clutch is idle-driven by swinging the passive arm to the other, and one of the first and second interlocking mechanisms And a two-drive state in which both the first and second interlocking mechanisms operate so as to be freely switchable. 2. The second interlocking mechanism includes a balance arm operatively connected to the passive arm, and a rod operatively connecting the balance arm and the second auxiliary arm, and the balance in the rod. A rod fixing portion capable of locking and maintaining an arm-side connecting portion is provided, wherein the balance arm-side connecting portion is connected to the balance arm in both driving states, and the balance arm-side connecting portion is connected to the rod fixing portion. The powder and granular material supply device for a rice transplanter according to claim 1, wherein the device is configured to be switchable between a single drive state and a single drive state. 3. A plurality of dispensing units each including a hopper for storing powder and granules, and a dispensing mechanism for dispensing a predetermined amount of powder and granules sent from the hopper to a start end of the powder and granule transfer path, An apparatus for supplying a granular material of a rice transplanter, which is arranged side by side with a fuselage on the rear side of a driver's seat in the left-right direction, wherein the granular material fed to the starting end is fed to the granular material transfer path by wind force. A blow duct is provided to supply and distribute the wind generated by the wind power device to the plurality of start ends, and the blow duct is made of a soft material which is connected to the start end and is provided for each of the plurality of feeding portions. And a rigid duct connecting the partial ducts and the blower in order to connect and connect the partial ducts to the blower. At the position just before the end duct A powder and granular material supply device for a rice transplanter provided with a guard member for the endmost partial duct. 4. A powder and granular material supply device for a rice transplanter, comprising: a hopper for storing the powder and granules; and a feeding mechanism for feeding a predetermined amount of the powder and granules dropped from the hopper. A powder or granule of a rice transplanter, wherein the hopper is formed in a funnel shape having a larger cross-sectional area at an upper portion than at a lower end portion supported by the feeding mechanism, and an intermediate support member for supporting upper and lower intermediate portions of the hopper is provided. Feeding device. 5. A delivery mechanism for feeding out the granular material sent from the hopper is provided in the body at the rear side of the driver's seat, and the granular material delivered from the feeding mechanism is supplied to a planting section via a supply hose. A powder feeder for a rice transplanter, which is configured to transfer wind power to a deployed groove generator, wherein the relief valve is capable of opening a valve and releasing air when wind pressure in the supply hose becomes stronger than a predetermined value. A valve is interposed at an intermediate portion of the supply hose on the rear side of the seedling mounting table in a state where the valve is locked to a planting section frame supporting the seedling mounting table,
A powder or granular material supply device for a rice transplanter, wherein a guide member for a portion of the supply hose closer to the feeding mechanism than the relief valve is attached to the planting section frame.