JP2000270639A - Paddy field working machine having built-in fertilizer distributor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the driving structure of a fertilizer distributor, enabling the regulation of a quantity sent of fertilizer to be needless even when the speed change regarding a hill distance is performed. SOLUTION: This paddy field working machine is so constituted that a seedling implanting device is lined to a traveling chassis which is equipped with a fertilizer distributor A and a fertilizer sending mechanism 15 of the device A is inputted with decelerated power, which is transmitted from a travel transmission shaft 35 placed in a longitudinal direction to a transverse output shaft through a gear case 36, through a passive arm 39 linked to a rotary arm 37 with a rod 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paddy field working machine with a fertilizer application device such as a rice transplanter or a direct seeder, and more particularly, to taking fertilizer application power from a traveling system and inputting power in conjunction with a planting mechanism. The present invention mainly relates to an improvement technique of a fertilization drive system, such as a cutting structure or rationalization of a power transmission unit. Fertilizers include powdery and granular ones and paste-like ones.

[0002]

2. Description of the Related Art As a fertilizer application device for a paddy field working machine, there is a fertilizer device mounted between the front and rear of a driver's seat and a seedling mounting table as disclosed in Japanese Patent Application Laid-Open No. 10-215621. This fertilizer applicator uses fertilizer fed from the hopper using the wind power of a blower placed on the left side of the fuselage, and uses a relatively long transfer path to the groove generator arranged on the float without clogging. Is configured to be transported.

[0003]

Since the conventional fertilizer has a structure driven by a PTO shaft for driving the planting part,
The operation of the PTO clutch has the advantage that the planting section and the fertilizer can intermittently operate the transmission at a stroke, but on the other hand, the feed amount of the fertilizer must be changed every time inter-stock shift is performed to change the inter-stock distance. There was annoyance. To change the feeding amount, as shown in Japanese Patent Application Laid-Open No. 5-316846, a screw feed structure in which a substantially gear-shaped operating tool is turned to variably operate the width of the fertilizer accommodation recess of the feeding roll. Therefore, the configuration therefor is relatively complicated, and the number of parts tends to be large.

[0004] It is an object of the present invention to eliminate the need for adjusting the amount of fertilizer to be fed even when shifting between plants, and to simplify the operation of adjusting the amount of fertilizer.

[0005]

[Means for Solving the Problems] [Configuration] In a first invention, a paddy field working machine with a fertilizer device is connected to a traveling machine body with a paddy field machine, and the fertilizer device is equipped on the traveling machine body side.
The fertilizer feeding mechanism of the fertilizer applicator is configured to be driven by power branched from the traveling power transmission system.

According to a second aspect of the present invention, in the first aspect, the transmission mechanism for interlocking the traveling transmission system and the feed-out mechanism is provided with a one-way idle driven when the traveling transmission system is driven in a direction in which the body travels backward. The clutch is interposed.

[0007] A third invention is the first or second invention, wherein:
A fertilizing clutch is provided to interrupt the power to the feeding mechanism, and when the planting clutch is engaged, the fertilizing clutch is also engaged,
These two clutches are linked so that the fertilizing clutch is disengaged when the planting clutch is disengaged.

A fourth invention is characterized in that, in the third invention, a manual operation mechanism capable of manually driving the feeding mechanism is provided.

In a fifth aspect of the present invention, in a paddy field working machine with a fertilizer application apparatus, a paddy field working machine is connected to a traveling machine body, a fertilizer apparatus is provided on the traveling machine body side, and a feeding mechanism of the fertilizer apparatus is provided.
The vehicle is configured to be driven by deceleration power transmitted from a traveling transmission shaft disposed in a front-rear direction to a left-right output shaft via a gear mechanism.

According to a sixth aspect of the present invention, in the fifth aspect, a fertilizing clutch for intermittently supplying power from the traveling transmission shaft to the feeding mechanism is provided in a split gear case surrounding the gear mechanism, and the fertilizing clutch is turned on and off. An operation hole through which the clutch operation shaft is inserted is provided on the split surface of the gear case, and an inner peripheral surface of the operation hole of the half-split structure is integrally formed with a convex portion that engages with a groove formed on the outer periphery of the operation shaft. It is characterized by having.

A seventh invention is the fifth or sixth invention, wherein:
The gear case is externally fitted to an intermediate portion of the traveling transmission shaft, and at one location away from the axis of the traveling transmission shaft,
The gear case is locked on the fuselage side.

In an eighth aspect based on the fifth to seventh aspects, the traveling power transmission shaft is a shaft for transmitting power from a transmission case at the front of the vehicle body to a rear axle case at the rear of the vehicle body. It is characterized in that a gear case is externally fitted to the position immediately before.

According to a ninth aspect of the present invention, in a paddy field working machine with a fertilizer application device, a paddy field working machine is connected to a traveling machine body, and the fertilizer application device is provided on the traveling machine body side.
A one-way clutch for rotating the feeding roll only in a fixed direction is provided, and the feeding mechanism is configured to be driven by power branched from the traveling power transmission system.

[Operation] According to the configuration of the first aspect, the following operation is provided. (A) Fertilizer is supplied in a fixed amount per unit area in a field, and is not affected by the number of seedlings planted. Therefore, if the feeding mechanism is driven by the power branched from the running power transmission system, even if the running speed during the planting operation is changed, the driving speed of the feeding mechanism is changed in synchronization with the change and the unit speed is changed by performing inter-stock shift. Even if the number of strains per mileage is changed, the feed amount of fertilizer is not changed, so that the feed amount adjustment becomes unnecessary. In the conventional structure in which the feed mechanism is driven by the PTO shaft, if the distance between the stocks is changed, the drive speed of the feed mechanism will also change. To compensate for this, the feed rate is adjusted to reduce the feed rate per unit time. Although it is necessary to change the settings, the present invention can omit such inconvenience.

[0015] (b) Since the fertilizer application device is provided on the traveling machine body side, as shown in Japanese Patent Application Laid-Open No. 5-316846, the planting efficiency is higher than the structure in which the fertilizer application device is mounted on the seedling planting device. By reducing the weight of the part, the position of the center of gravity of the entire body can be moved to the front side to improve the rearward balance, whereby the weight at the front end of the body can be reduced, and the overall weight can be reduced. In addition, it is possible to reduce the output of the hydraulic cylinder for raising and lowering the planting portion and to improve the responsiveness of the vertical movement.

According to the second aspect of the present invention, a one-way clutch is interposed in a transmission mechanism that links the traveling transmission system and the feeding mechanism, and the fertilizer is applied when the traveling transmission system is driven in a direction in which the body travels backward. The device is not driven. The reverse movement with the paddy field machine is only the switchback turn at the ridge during planting work, and the seedling planting is not performed naturally when moving backward, so the fertilizer application device is driven wastefully when moving backward. Will be prevented beforehand.

According to the third aspect of the present invention, when the work clutch such as the planting clutch is turned on, the fertilizer application clutch is also turned on, and when the work clutch is turned off, the two fertilizer application clutches are linked. Therefore, the working device driven by the PTO transmission system and the fertilizer applicator driven by the traveling transmission system can be turned on and off in synchronization with each other. For example,
The fertilizer device is also driven during seedling planting work, and when the seedlings are not planted, the fertilizer device is linked so as to be stopped, so there is no inconvenience that the fertilizer device is driven during traveling and traveling, and the paddy field working device The fertilizer application is turned on and off in synchronization.

According to the fourth aspect of the present invention, a one-way clutch that is idlely driven when the vehicle is moving backward is provided in the fertilizer application drive system, and a manual operating mechanism that can manually drive the feeding mechanism is provided. If this is the case, it becomes possible to manually operate only the feeding mechanism without reversely driving the traveling power transmission system, and perform trials of fertilizer and weighing to check whether the actual amount of fertilizer supplied has been adjusted to a predetermined amount. You can do it conveniently.

The fertilizer applicator is arranged side by side in accordance with the paddy work strip such as a planting strip or a sowing strip, and its drive shaft is arranged as a long shaft in the left and right direction. Therefore, according to the configuration of claim 5, the feeding mechanism is driven by the deceleration power transmitted from the traveling transmission shaft disposed in the front-rear direction to the left-right output shaft via the gear mechanism, so that the output shaft is driven. The fertilizer drive shaft and the fertilizer drive shaft are oriented in the same direction, and the interlocking structure of these two shafts can be configured by a simple mechanism such as a chain mechanism or a crank mechanism. In addition, since the gear mechanism for changing the direction of the shaft is also decelerated at the same time, a multi-function can be achieved, for example, without having to provide a separate gear mechanism for reduction.

According to a sixth aspect of the present invention, a fertilizing clutch for intermittently connecting and disconnecting power from the traveling transmission shaft to the feeding mechanism is provided in a split gear case surrounding the gear mechanism, and a clutch for turning on and off the fertilizing clutch. The operation hole for inserting the operation shaft is provided on the split surface of the gear case, and the convex portion that engages with the groove formed on the outer periphery of the operation shaft is integrally formed on the inner peripheral surface of the operation hole of this half-split structure. By using the split surface structure of (1), positioning by preventing the clutch operation shaft from coming off can be performed. In other words, since the protruding portions protrude in the direction intersecting with the mold surface, they can be integrally formed without using a special punching die such as a slide die or a nesting die.

According to the seventh aspect of the present invention, since the gear case is externally fitted to an intermediate portion of the traveling transmission shaft, the gear case is basically supported by the traveling transmission shaft. If the gear case is locked to the fuselage at one place away from the center, the rotation of the traveling transmission shaft can be prevented and the gear case can be fixedly supported. In other words, the gear case can be fixedly supported by providing only one supporting means.

According to the eighth aspect of the present invention, since the gear case is externally mounted at a position immediately before the rear axle case on the traveling power transmission shaft for transmitting power from the transmission case at the front of the body to the rear axle case at the rear of the body, the fertilizer apparatus is operated. Regardless of the structure that is arranged immediately after the seat or the structure that is arranged in the planting portion, the power transmission path from the gear case to the fertilizer application device can be made as short as possible, and the power transmission structure can be made compact.

According to the ninth aspect of the present invention, the feeding mechanism is driven by the power branched from the traveling power transmission system.
The operation (a) according to the configuration of claim 1 is obtained, and
Since the one-way clutch for rotating the feeding roll only in the fertilizer feeding direction is provided in the feeding mechanism, it is possible to prevent the fertilizer from being driven when the supply of fertilizer is unnecessary, such as when the body is traveling backward. And, since the one-way clutch for that purpose is provided in the feeding mechanism, for example, the driven side reciprocating rocking arm provided on the shaft of the feeding mechanism side and the driving side rotating arm are linked and connected by a rod, so that the driven side rotates. It is possible to adopt a simple transmission structure.

[Effect] In the paddy field working machine according to any one of the first to ninth aspects, (c) the rearward balance can be improved by arranging the fertilizer application device on the machine side, and the weight of the feeding mechanism can be improved. By taking the power from the running system, even if the distance between the stocks was changed, it was not necessary to adjust the amount of feed of the fertilizer, and the handling of the fertilizer application could be improved.

In the paddy field working machine with a fertilizer application device according to the second aspect, the above effect (c) is obtained by interposing a one-way clutch in a transmission mechanism that interlocks the traveling transmission system and the feeding mechanism.
In this case, there is an advantage that the feeding mechanism is stopped when the body moves backward, so that useless fertilizer supply can be automatically prevented.

In the paddy field working machine with a fertilizer application device according to the third aspect of the present invention, the fertilizer device is driven during traveling by moving so that the work clutch of the PTO drive system and the fertilizer clutch of the travel drive system are simultaneously turned on and off. The fertilizer application work accompanying the paddy field work can be appropriately performed only when necessary, while avoiding such inconveniences as being performed.

In the paddy field working machine with a fertilizer application device according to the fourth aspect, by utilizing the provision of a one-way clutch in the fertilizer application drive system, it is possible to drive and operate the feeding mechanism manually.
It has been made convenient to test and measure fertilizer without complicating the structure.

In the paddy field working machine with the fertilizer application device according to the fifth aspect, the output shaft on the drive side and the drive shaft on the driven side are aligned in the same direction, so that the interlocking structure of both shafts can be simplified and decelerated. It is possible to achieve multi-functional.

In the paddy field working machine with the fertilizer application device according to the sixth aspect, by utilizing the split structure of the power transmission gear case to the feeding mechanism, the operation shaft of the fertilizer clutch can be positioned without any special parts or processing, thereby reducing costs. There are advantages that can be done.

In the paddy field working machine with the fertilizer application device according to the seventh aspect, the gear case is externally fitted to an intermediate portion of the traveling transmission shaft, so that the gear case is locked to the machine body side at only one position, thereby driving the traveling transmission shaft. Can be stopped about
A structure was obtained in which the structure could be simplified and the gear case could be fixedly supported.

In the paddy working machine with a fertilizer application device according to the eighth aspect, the gear case is disposed immediately before the axle case after the traveling power transmission shaft, so that the power transmission structure from the gear case to the fertilizer application device can be made compact without any special modification. There is an advantage that can be achieved.

In the paddy field working machine with the fertilizer application device according to the ninth aspect, it is possible to prevent the fertilizer application device from being automatically driven when the fertilizer supply is not necessary, such as when the vehicle is running backward, or to simplify the transmission system of the feeding mechanism. There are advantages such as that

[0033]

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 is a starter of a hopper 13 that stores fertilizer that is a granular material, and a fertilizer hose 14 that is a fertilizer transfer path for fertilizer that flows down from the hopper 13 and is sent. A feeding mechanism 15 for feeding a predetermined amount to the funnel 20, a fertilizer 52 for feeding the fertilizer sent by the fertilizing hose 14 to the field, a blower 16 for feeding the fertilizer fed to the funnel 20 to the fertilizing hose 14 by wind power, It is composed of a blower duct 17 for distributing the wind generated by the blower 16 to a total of six fertilizing hoses 14 and the like.

As shown in FIG. 6 and FIG.
In the roll case 18, a feeding roll R in which a large number of concave portions 24 a for introducing fertilizer are formed on the outer periphery along the circumferential direction is rotatable at a position above the funnel portion 20 below the fertilizer discharge port of the hopper 13 and above the funnel portion 20. And arranged. The feeding roll R is configured to be driven and rotated by the engagement of a driven gear 19G integrally formed therewith with a driving gear 21G of a driving 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 on only 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 that can be pushed and returned freely is provided 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, and 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.

If the operating section 25 is pinched (forward) and pulled out, the shut-off plate 26 is positioned on the feeding roll R to be in a closed position in which the supply of fertilizer 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 right and left, and two sets of the inside of the four feeding portions k are fed out. 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 inside.
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. Shift rotator 29 to drive gear 21
In order to disengage from G, a shift member 31 which can swing freely is provided. In other words, the shift member 31 is forcibly rocked by pulling a wire (not shown), and the fertilizing clutch (an example of a powder-granular material clutch) 33 capable of blocking transmission of the rotational power of the drive shaft 21 to the feeding mechanism 15. Is configured.

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 traveling transmission shaft 35 is configured by interlockingly connecting a front shaft portion 35a on the transmission case 4 side and a rear shaft portion 35b on the rear axle case 34 with a coupling 35c, and the gear case 36 is connected to the rear shaft portion 35b. Supported.

As shown in FIGS. 24 to 27, the gear case 36 is provided with a bevel gear mechanism 95 for reducing the power of the traveling transmission shaft 35 in the front-rear direction and transmitting the power to the output shaft 96 in the left-right direction. A rotating arm 37 is attached to a protruding end of the shaft 96 from the gear case 36. The bevel gear mechanism 95 is configured by engaging a drive bevel gear 95a externally fitted to the rear shaft portion 35b via a one-way clutch 97 with a driven bevel gear 95b externally fitted to the output shaft 96, and A fertilizing clutch 98 is provided above. The one-way clutch 97 is set to transmit power to the fertilizer applicator A only when the body travels forward, and to idle in reverse.

That is, the clutch body 99 having the engaging portion 98a formed on the side face is connected to the output shaft 9 by spline fitting.
The clutch body 99 is slidably fitted on the outer periphery of the clutch body 99 in a rotatable manner.
The urging clutch 98 is formed by pressing and biasing to the side and forming an engaging portion 98b that engages with the engaging portion 98a on the side surface of the driven bevel gear 95b. And the clutch body 9
A clutch operating shaft 101 having a cam portion 101a acting on the lower end portion 99a of the ninth portion is formed at the lower end portion thereof so as to protrude outside through the gear case 36, and a driven arm 102 is fixed to the protruding end portion.

The gear case 36 is divided into two parts on the center line as a case passing through the output shaft 96 and the clutch operation shaft 101, and is divided into two parts.
Both a and the right case 36b have a vertically symmetrical shape, and can be formed of the same one to reduce the die cost. The operation hole 103 through which the clutch operation shaft 101 is inserted is provided on the split surface w of the gear case 36, and engages with an inner peripheral surface of the operation hole 103 having the half-split structure with a circumferential groove 101 b formed on the outer periphery of the clutch operation shaft 101. A convex portion 104 to be inserted is formed in each of the cases 36a and 36b. With this structure, if the gear case 36 is assembled, the clutch operating shaft 101 is brought into a locked state.

The rear axle case 34 is supported by front and rear brackets 105, 106 fixed to the left and right main frames 109, 109 constituting the body frame F so as to freely roll left and right within a predetermined range around a rolling fulcrum V in the front-rear direction. Have been. The gear case 36 basically includes the traveling transmission shaft 35
One of the assembling bolts 107 of the left and right split cases 36a and 36b is elongated, and is bolted to the front bracket 105 via the connecting bracket 108. In other words, the gear case 36 is locked to the machine body at one position away from the axis V of the traveling transmission shaft 35.

In the transmission case 4, a planting clutch (an example of a work clutch) 110 for intermittently turning on and off the power of the PTO transmission shaft 70 disposed on the lower abdomen of the vehicle body, and a planting lever for engaging and disengaging the clutch 112 is provided.
Then, as shown in FIG. 27, when the planting clutch 110 is engaged by operating the planting lever 112, the fertilizing clutch 9
8 and the fertilizer application clutch 98 is disengaged so that both clutches 110 and 98 are linked by an operation wire 113 so that the planting clutch 110 is disengaged.

On the other hand, as shown in FIGS. 7, 13, and 14, the drive shaft 21 is provided with a passive arm 39 via a first one-way clutch 38. And a power 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 power conversion mechanism 41 is rotatable about a fulcrum Y and a driven arm 43 externally fitted to 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 bell crank 44, a rod 45 for interlocking the front end of the passive arm 39 and the bell crank 44, and a rod 46 for interlocking the bell crank 44 and the driven arm 43.

That is, in the power conversion mechanism 41, only the first one-way clutch 38 is idle-driven by the swing of the passive arm 39 to one side, and the second one-way clutch is driven by the swing of the passive arm 39 to the other side. The passive arm 39 and the driven arm 43 are interlockingly connected to each other so that only the 42 is idlely driven.

Therefore, when the passive arm 39 swings upward, the first one-way clutch 38 rotates integrally to rotate the drive shaft 21 in the direction of arrow a as shown in FIG. Driven arm 4 that will rotate in the direction
The rotation of No. 3 causes the second one-way clutch 42 to idle. When the passive arm 39 swings downward, the first one-way clutch 38, which rotates in the direction of arrow B, idles and rotates in the direction of arrow a, as shown in FIG. The rotation of the driven arm 43 causes the second one-way clutch 42 to rotate integrally and rotate the drive shaft 21 in the same direction as the arrow a.

As shown in FIGS. 7, 9, and 20 to 22, the fertilizer application clutch 33, the ridge-side clutch 81 for interrupting the power to the planting mechanism 80, and the power to the seedling vertical feed mechanism 82 are interrupted. And three sets of the longitudinal feed clutches 83 corresponding to the two rows.
Each of the reference numerals 1 and 83 has an interlocking mechanism 84 for performing one-shot or off operation by a single fertilizer application clutch lever 85 that swings up and down around a left-right fulcrum z.

The interlocking mechanism 84 includes an inner wire 86i interlockingly connected between the ridge-side clutch 81 and the longitudinal feed clutch 83 and the fertilizing clutch lever 85, and a shift member of one end fixed and the other end of the fertilizing clutch 33. 31 is constituted by a Bowden wire 86 having an outer wire 86o interlockingly connected to the outer wire 86. That is, at a position near the rear of the fertilizer application clutch lever 85 supported by the fertilizer application frame, a swing arm 76 that is rotatable about the vertical axis y in conjunction with the rod of the shift member 31 is provided. The base 77 of the outer wire 86o is formed on the base end side.

The distal end of the outer wire 86o is fixedly supported by a distal end receiver 78 attached to the planting frame. The distal end of the inner wire 86i is interlocked with the driven arm 81a of the ridge-side clutch 81, and the inner wire 86i on the front side thereof. The driven arm 83a of the longitudinal feed clutch 83 is interlockingly connected to the middle part of the clutch.

As shown in FIG. 21, the fertilizer clutch lever 85 is set so that its upward swing end is at the clutch disengagement position OFF and its downward swing end is at the clutch engagement position ON. And the inner wire 86 of the fertilizer clutch lever 85
i is a line segment D.i. connecting the distal end of the base-side receiver 77 and the fulcrum z in the clutch disengaged state. P. Above the line segment D. P. It is constituted so that it may be located below. Then, the inner wire 86i is connected to the vertical feed clutch 83 and the ridge-side clutch 8.
1 is provided with a dead point mechanism that keeps the fertilizer application clutch lever 85 at any of the ON and OFF positions of the clutch engagement and the disengagement position since the fertilizer application clutch lever 85 is constantly pulled and urged by the clutch engagement urging spring (not shown). It is composed.

The vertical swing range of the fertilizing clutch lever 85 is determined by its lever guide plate 90.
When the lever is operated to the clutch disengaged position OFF, both the inner and outer wires 86i, 86o are pulled toward the lever side, and the three types of clutches 33, 81, 83 are all disengaged, and the lever is operated to the clutch engaged position ON. In this case, both the inner and outer wires 86i, 86o return to the opposite side of the lever by the above-described biasing force, and all three types of clutches 33, 81, 83 are engaged.

As described above, the central two sets of the two-part integrated type feeding parts k, k use one rod, so that the fertilizing clutch 33 is 4 even though it is a six-row rice transplanter.
There are pieces. On the other hand, since the ridge-side clutch 81 and the longitudinal feed clutch are both of two-piece type and set to three pieces,
Of the individual fertilizing clutch levers 85, the central one is configured to simultaneously operate the fertilizing clutches of the two sets of feeding portions k and k. That is, as shown in FIG. 21 (a), the two inner swing arms 76, 76 in the left-right direction are interlocked and connected by the interlock rod 87 so that they can be turned on and off at the same time. The swing arm 76 has a base-side support 77.

As shown in FIG. 21B, in order to dispose the fertilizing clutch lever 85 on the left side in the advancing direction of the machine body toward the inside of the machine body with respect to the position of the corresponding swing arm 76, the inner wire 86i is moved. An interlocking arm 88 connecting the base end is disposed on the left side of the machine body, and the interlocking arm 88 and the fertilizing clutch lever 85 are interlockingly connected by a fulcrum shaft 89 having a fulcrum z.

As shown in FIG. 23, a manual operating mechanism H for rotating the feeding roll R by a manual handle 92 in a predetermined direction is provided. That is, a drive shaft 2 having a regular hexagonal cross section
At the right end of 1, a manual handle 92 is provided so as to be stowable. This manual handle 92 is a band steel bent in a U-shape so that the distance between the inner sides is equal to the width across flats of the drive shaft 21. Each arm of the manual handle 92 has a long hole 9 fitted to a pin 91 supported on the drive shaft 21.
3 are formed. The narrow holes 93 are formed with opposing throttle projections 93a at positions near both ends of the long holes 93, and a detent function capable of lightly engaging the pins 91 at each end of the long holes 93 and holding the position is generated.

Normally, as shown by the solid line in FIG. 23, the pin 91 is positioned at the end of the long hole 93 on the handle tip side.
It is stored so as to rotate integrally with the attitude along the drive shaft 21, and when necessary, as shown by a virtual line in FIG.
When the pin 91 is slid and rotated by 90 degrees so as to be located at the base end of the handle, the manual handle 92 can be set to the operation posture in which the manual handle 92 vertically protrudes from the drive shaft 21. Although not shown, the manual handle 92
In order to facilitate the turning operation of the handle, a handle may be provided at the tip end side of the handle.

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 sections k while being connected to the funnel section 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 lower partial duct 51 integrally formed with a 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 area of the wind intake in the air duct 17 is the same, the wind pressure tends to increase toward the leeward side and the wind per unit time tends to increase. 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 projections 47a, 51a each having two small ducts 48, 47 (51) are provided, so that the air flow to each funnel 20 is made uniform and the above disadvantage is eliminated. Is planned.

In the feeding section k, the wind intake ports 14a, 14a, which are the starting ends of the fertilizing hoses 14, are 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 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 right and left in a substantially U-shaped cross section with an upper side projecting rearward from the 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 66 a hanging down from the rear frame 66, and the upper end of the support pipe 57 is fitted to an arm member 58 a 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.

On the lateral side of the seedlings planted by the planting claws 10, there is provided a groove-making device 52 for feeding the 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 apparatus 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 recess 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 the 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 the 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 connection position of the passive arm 39 with the rod 40 is configured to be freely changeable. By changing the connection 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.

A ridge-side clutch 81 capable of transmitting and disconnecting power to one planting transmission case 8 (a pair of rotating cases 9) and a ridge-side clutch lever for transmitting and cutting off the ridge-side clutch 81. The fertilizer application clutch lever 85 is provided. As shown in FIGS. 8 and 9, the operation arm 31 that can swing around the axis y of the fixed portion of the feeding portion k.
Has its end engaged with the shift rotating body 29, and the fertilization clutch lever 85 and the operation arm 31 are connected by a Bowden wire 86.

Thus, for example, the fertilizing clutch lever 85 of the planting transmission case 8 on the right side is operated to the transmission blocking side, and
When the clutch 81 at the ridge of the right planting transmission case 8 is subjected to the transmission shutoff operation, the pair of rotating cases 9 of the right planting transmission case 8 are stopped, and the two right planting strips are not planted. The drive shaft 15 of the fertilizer feeding section k corresponding to the two planting strips stops, and the supply of fertilizer to the two right planting strips 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 the discharge port 71 is swingable around a horizontal axis W by a switching plate 72. 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.

[Alternative Embodiment] The gear mechanism 95 may be a bevel gear mechanism, a screw gear mechanism, a worm gear mechanism, a bevel gear mechanism, or the like. Further, a direct seeding machine may be used as the paddy field working machine.

[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 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 sectional 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 plan view showing the operation structure of each of the clutches for fertilization, ridges, and longitudinal feed.

FIG. 21 is a side view showing a support structure of the fertilizer application clutch lever.

FIG. 22 is an operation diagram showing an operation state of a fertilization clutch.

FIG. 23 is a front view of a main part showing a support structure of the manual handle.

FIG. 24 is a longitudinal sectional view showing the structure of a power take-out unit to the fertilizer application device.

FIG. 25 is a cross-sectional view showing the structure of a power take-out unit for the fertilizer application device.

FIG. 26 is a sectional view of a main part showing a mounting structure of the gear case.

FIG. 27 is a system diagram showing an operation structure of a fertilizer application clutch.

[Explanation of symbols]

 Reference Signs List 4 transmission case 7 paddy field work machine 15 feeding mechanism 34 rear axle case 35 traveling transmission shaft 36 gear case 38 one-way clutch 92 manual operation mechanism 95 gear mechanism 96 output shaft 97 one-way clutch 98 fertilization clutch 101 clutch operation shaft 101b groove 103 operation hole 104 Convex part 110 Planting clutch A Fertilizer application R Feeding roll V Shaft w Splitting surface H Manual operation mechanism R Feeding roll

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Tetsuya Matsumura 64 Ishizukitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Works, Ltd. (72) Inventor Shinsuke 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Manufacturing Co., Ltd. Office F-term (reference) 2B052 BC05 BC08 BC16 DB06 DB07 DC04 EB02 EB05 EB12 EC10 ED08 2B060 AA10 BA04 BA07 BA09 BB03 BB06 BB07 BB08 BB09

Claims (9)

[Claims] A traveling machine is connected to a paddy field working machine, a fertilizer application device is provided on the traveling machine body side, and a fertilizer feeding mechanism of the fertilizer application device is configured to be driven by power branched from a traveling power transmission system. Paddy working machine with a fertilizer application. 2. A one-way clutch, which is idle-driven when the traveling transmission system is driven in a direction in which the body travels backward, is interposed in a transmission mechanism that links the traveling transmission system and the delivery mechanism. The paddy working machine with a fertilizer application device according to claim 1 which is provided. 3. A fertilizer application clutch for intermittently supplying power to the feeding mechanism is provided. When the work clutch is turned on, the fertilizer application clutch is turned on, and when the work clutch is turned off, the fertilizer application clutch is also turned off. The paddy working machine with a fertilizer device according to claim 1 or 2, wherein the two clutches are linked. 4. The paddy working machine with a fertilizer device according to claim 3, further comprising a manual operation mechanism capable of manually driving the feeding mechanism. 5. A paddy field working machine is connected to a traveling machine body, and a fertilizer application device is provided on the traveling machine body side, and a fertilizer feeding mechanism of the fertilizer application device is moved left and right through a gear mechanism from a traveling transmission shaft arranged in a front-rear direction. A paddy field working machine with a fertilizer device configured to be driven by the deceleration power transmitted to the output shaft of the orientation. 6. A clutch operating shaft for intermittently turning on and off the fertilizing clutch is provided in a split gear case surrounding the gear mechanism, the fertilizing clutch intermitting power from the traveling transmission shaft to the feeding mechanism. An operation hole through which the operation shaft is inserted is provided on a split surface of the gear case, and a convex portion that engages with a groove formed on an outer periphery of the operation shaft is integrally formed on an inner peripheral surface of the operation hole having the half-split structure. Item 6. A paddy field working machine with a fertilizer application device according to item 5. 7. The vehicle according to claim 7, wherein the gear case is externally fitted to an intermediate portion of the traveling transmission shaft, and the gear case is locked to the machine body at one position away from the axis of the traveling transmission shaft. A paddy field working machine with a fertilizer application device according to 5 or 6. 8. The traveling power transmission shaft is a shaft for transmitting power from a transmission case at a front portion of the vehicle body to a rear axle case at a rear portion of the vehicle body, and the gear case is externally fitted to a position immediately before the rear axle case in the traveling power transmission shaft. Claims 5-7
The paddy field working machine with a fertilizer application device according to any one of the above. 9. A paddy working machine is connected to a traveling machine body, a fertilizer is mounted on the traveling machine side, and a fertilizer feeding mechanism of the fertilizer applicator is provided with a predetermined amount of fertilizer by a predetermined amount with rotation of a feeding roll in a predetermined direction. And a one-way clutch for rotating the delivery roll only in the fixed direction is provided in the delivery mechanism, and the delivery mechanism is configured to be driven by power branched from a traveling power transmission system. Paddy working machine with fertilizer application.