JP3519980B2 - Paddy field machine with fertilizer application equipment - Google Patents

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 equipped with a fertilizer application device such as a rice transplanter or a direct seeder, and more specifically, to take fertilizer application power from a traveling system or to input power applied in conjunction with a planting mechanism. It mainly relates to a technique for improving the fertilizer drive system, such as cutting structure or rationalization of the power transmission section. Fertilizers include powdery and paste-like substances.

[0002]

2. Description of the Related Art As a fertilizer application apparatus for paddy working machines, as shown in Japanese Patent Application Laid-Open No. 10-215621, there is a fertilizer application apparatus installed before and after a driver's seat and a seedling table. This fertilizer applicator uses fertilizer delivered from the hopper by using the wind force of a blower installed on the left side of the machine, and it can satisfactorily fertilize a relatively long transfer route to the grooving device located at the float part. Is configured to be transferred.

[0003]

[Problems to be Solved by the Invention] The conventional fertilizer application is for seedling planting.
Since the structure was driven by the PTO shaft for driving the attachment device, there was an advantage that the seedling planting device and the fertilizer application could be operated intermittently at once by operating the PTO clutch, but on the other hand, to change the distance between plants Each time the shift between plants was changed, the feeding amount of the fertilizer application had to be changed, which was troublesome.
In order to change the delivery amount, as shown in Japanese Patent Laid-Open No. 5-316846, a screw feed structure in which a substantially gear-shaped operation tool is rotated to variably operate the width of the fertilizer accommodation recess of the delivery roll. And the configuration for that is relatively complex,
The number of parts also tended to be large.

An object of the present invention is to simplify the operation of adjusting the amount of fertilizer to be applied by eliminating the need for adjusting the amount of fertilizer to be fed out even when the stock shift is performed.

[0005]

[Means for Solving the Problems]

[Structure] According to a first aspect of the present invention, a traveling device is equipped with a working device and a fertilizer applying device, and a traveling transmission shaft and a PTO are installed from a mission case.
The shaft is extended and the motive power branched from the traveling transmission shaft is used to
In order to drive the fertilizer feeding mechanism of the fertilizer application,
To drive the working device with power from the PTO shaft
It is characterized in that it is configured .

A second aspect of the present invention is the drive transmission according to the first aspect of the present invention.
It is characterized in that a one-way clutch that is idled when the traveling transmission shaft is driven in the direction in which the machine body travels backward is interposed in the transmission mechanism that interlocks the shaft and the payout mechanism.

A third invention is the same as the first or second invention,
The fertilizer clutch for connecting and disconnecting power to the feeding mechanism, and
And a working clutch for intermittently the power of the working device is provided, prior to
The fertilizer application clutch is turned on when the work clutch is turned on, and the fertilizer application clutch is turned off when the work clutch is turned off.

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

According to a fifth aspect of the present invention, in a paddy field working machine with a fertilizer application, a working device and a fertilizer application device are provided on a traveling machine body side, and a feeding mechanism of the fertilizer application is provided with a gear mechanism from a traveling transmission shaft arranged in the front-rear direction. It is characterized in that it is configured to be driven by the deceleration power transmitted to the output shaft in the left-right direction via the shaft.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, a fertilizer clutch for connecting and disconnecting the power from the traveling transmission shaft to the feeding mechanism is provided in a gear case having a split structure surrounding the gear mechanism, and the fertilizer clutch is turned on and off. An operation hole for inserting the clutch operation shaft is provided on the split surface of the gear case, and a convex portion that engages with a groove formed on the outer circumference of the operation shaft is integrally formed on the inner peripheral surface of the operation hole of this half-structure. It is characterized by being present.

A seventh invention is the fifth or sixth invention, wherein
The gear case is externally fitted and attached to an intermediate portion of the traveling power transmission shaft, and at one location apart from the axis of the traveling power transmission shaft,
It is characterized in that the gear case is locked to the body side.

According to an eighth aspect of the present invention, in the fifth to seventh aspects, the traveling transmission shaft is a shaft for transmitting power from a transmission case at the front of the machine body to a rear axle case at the rear of the machine body. It is characterized in that a gear case is externally fitted and attached to a position immediately before.

[0013] The ninth invention is the first invention, constitute a fertilizer feeding mechanism before Symbol fertilization device, to which feed the fertilizer by a predetermined amount in accordance with the rotation in a fixed direction of the feed roll,
This feeding mechanism, characterized in that the one-way clutch for rotating the feed roll only in the predetermined direction are to deploy.

[Operation] According to the constitution of claim 1, there is the following operation.
(B) The fertilizer is supplied in a fixed amount per unit area in the field and is not affected by the number of planted seedlings. Therefore, if the feeding mechanism is driven by the power branched from the traveling transmission shaft , even if the traveling speed during planting work is changed, the driving speed of the feeding mechanism is changed in synchronism with it and the stock-to-stock shift Even if the number of stocks per mileage is changed, the feed amount of fertilizer is not changed, so the feed amount adjustment is not necessary. In the conventional structure in which the feeding mechanism is driven by the PTO shaft that drives the seedling planting device, the drive speed of the feeding mechanism also changes if the distance between the stocks is changed. Therefore, in order to offset it, the feeding amount is adjusted. Although it is necessary to change and set the delivery amount per unit time, the inconvenience can be omitted in the present invention.

Further, since the fertilizer application device (b) is provided on the traveling machine body side, as compared with the structure in which the fertilizer application device is mounted on the seedling planting device as shown in Japanese Patent Laid-Open No. 5-316846, By reducing the weight of the parts, the center of gravity of the entire body can be moved to the front side, and the rear balance can be improved, whereby the weight at the front end of the body can be reduced and the overall weight can be reduced. Further, it is expected that the output of the hydraulic cylinder for raising and lowering the planting portion can be reduced, and that the response of the vertical movement can be improved.

According to the second aspect of the present invention, the one-way clutch is provided in the transmission mechanism that interlocks the traveling transmission shaft and the feeding mechanism, and when the traveling transmission shaft is driven in the backward traveling direction of the machine, fertilizer application is performed. The device is designed so as not to be driven. During the planting work, the reverse movement of the paddy work machine is only the switch back turn at the ridge, and naturally the seedlings are not planted during the reverse movement, so the fertilizer application is wastefully driven during the reverse movement. Will be prevented in advance.

According to the third aspect of the present invention, both clutches are linked so that when the work clutch such as the planting 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. Therefore, the working device driven by the PTO transmission system and the fertilizer application device driven by the traveling transmission system can be synchronized and turned on and off. For example,
The fertilizer application device is also driven during seedling planting work, and is linked so that the fertilizer application device is stopped when seedling planting is not in progress.Therefore, there is no inconvenience that the fertilizer application device is driven during traveling, and it can be used as a paddy field work device. The fertilizer applicator is turned on and off at the same time.

According to the structure of the fourth aspect, in the one-way clutch that is idle-driven during reverse travel is provided in the fertilization drive system, the manual operation mechanism that can manually drive the feeding mechanism is provided, so that when the machine is stopped. In that case, it is possible to manually operate only the feeding mechanism without reverse driving the traveling transmission system, and to perform trial feeding of fertilizer and weighing to confirm whether the actual fertilizer supply amount has been adjusted to a predetermined amount. It will be convenient.

The fertilizer applicators are arranged side by side corresponding to paddy field work strips such as planting strips and sowing strips, and their drive shafts are arranged as long shafts in the left and right directions. Therefore, according to the configuration of claim 5, the deceleration power transmitted from the traveling transmission shafts arranged in the front-rear direction to the output shafts in the left-right direction via the gear mechanism drives the feeding mechanism. The fertilizing drive shaft and the fertilizer drive shaft are oriented in the same direction, and the interlocking structure of these shafts can be constituted by a simple one such as a chain mechanism or a crank mechanism. In addition, since the gear mechanism for changing the direction of the shaft is also made to decelerate at the same time, it is possible to achieve multi-functionality such that it is not necessary to separately provide a gear mechanism for reduction.

According to the sixth aspect of the present invention, in the gear case having a split structure surrounding the gear mechanism, there is provided a fertilization clutch for connecting / disconnecting the power from the traveling transmission shaft to the feeding mechanism, and a clutch for opening / closing the fertilization clutch. An operation hole for inserting the operation shaft is provided on the split surface of the gear case, and a convex part that engages with a groove formed on the outer circumference of the operation shaft is integrally formed on the inner peripheral surface of the operation hole of this half structure, so that the gear case Using the split surface structure, the positioning can be performed by retaining the clutch operation shaft. That is, since the convex portion projects in a direction intersecting the mold splitting surface, it can be integrally formed without using a special die such as a slide die or a nest die.

According to the seventh aspect of the present invention, since the gear case is externally fitted and mounted on the intermediate portion of the traveling transmission shaft, the traveling transmission shaft basically supports the gear case, and the shaft of the traveling transmission shaft is basically supported. If the gear case is locked to the machine body at one location away from the core, the rotation of the traveling transmission shaft can be prevented and the gear case can be fixedly supported. That is, the gear case can be fixedly supported by providing the supporting means at only one position.

[0022] In the construction of claim 8, than the gear case just before position of the rear axle case was fitted mounted in the running transmission shaft which transmits power from the transmission case body front to rear axle cases aft body, formic Yakesu The power transmission path to the fertilizer application can be shortened as much as possible, and the power transmission structure can be made compact.

In the ninth aspect of the present invention, since the feeding mechanism is driven by the power branched from the traveling transmission system,
While the operation (a) according to the configuration of claim 1 is obtained,
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 application device from being driven when the fertilizer supply is unnecessary such as during backward traveling of the machine. Since the feeding mechanism is provided with a one-way clutch for that purpose, for example, the driven side reciprocating swing arm equipped on the shaft of the feeding mechanism side and the rotating arm on the driving side are interlocked by a rod to rotate the driven side. It is possible to adopt a simple transmission structure that does not.

[Effect] In the paddy working machine according to any one of claims 1 to 9, (C)
By rearranging the fertilizer applicator on the machine side to improve the rear balance and reduce the weight, the power of the feeding mechanism is taken from the traveling system, so that it is not necessary to adjust the feeding amount of fertilizer even if the distance between plants is changed. As a result, the handleability of the fertilizer applicator was improved.

In the paddy field working machine with the fertilizer applicator according to the second aspect, the one-way clutch is interposed in the transmission mechanism that interlocks the traveling transmission shaft and the feeding mechanism.
In addition, there is an advantage that the feeding mechanism is stopped during the reverse travel of the airframe to automatically prevent unnecessary fertilizer supply.

In the paddy field working machine with a fertilizer application apparatus according to a third aspect of the present invention, the fertilizer application apparatus is driven during traveling by linking the work clutch of the PTO drive system and the fertilization clutch of the traveling drive system so that they are simultaneously opened and closed. It was possible to appropriately perform the fertilization work that accompanies the paddy work only when necessary, while avoiding the inconveniences such as being caused.

In the paddy field working machine with the fertilizer applicator according to the fourth aspect, it is possible to manually drive the feeding mechanism by utilizing the one-way clutch provided in the fertilizer drive system.
The fertilizer can be conveniently tested and weighed out without complicating the structure.

In the paddy field working machine with the fertilizer applicator according to the fifth aspect, by aligning the drive-side output shaft and the driven-side fertilizer drive shaft in the same direction, simplification of the interlocking structure of both shafts and deceleration can be achieved. We were able to achieve multi-functionality.

In the paddy field working machine with fertilizer application according to the sixth aspect of the present invention, the fertilization clutch operating shaft can be positioned without special parts or processing by utilizing the split structure of the gear case for transmitting power to the feeding mechanism, thereby reducing the cost. There are advantages.

In the paddy working machine with a fertilizer applicator according to a seventh aspect of the present invention, the gear case is externally fitted and attached to an intermediate portion of the traveling power transmission shaft so that the gear case is locked to the machine body at only one location. You can stop the rotation
The structure was simplified and a structure capable of fixing and supporting the gear case was obtained.

In the paddy field working machine with fertilizer application according to the eighth aspect of the present invention, the gear case is arranged immediately before the rear axle case of the traveling transmission shaft, so that the power transmission structure from the gear case to the fertilizer application can be made compact without special modification. There is an advantage that can be achieved.

In the paddy field working machine with the fertilizer application apparatus according to the ninth aspect, it is possible to prevent the fertilizer application apparatus from being automatically driven when the fertilizer supply is unnecessary such as when traveling backward of the machine body or to simplify the transmission system of the feeding mechanism. There are advantages such as

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIGS. 1 and 2, an engine 3 and a mission case 4 are provided at the front of a body having a pair of left and right front wheels 1 and a pair of left and right rear wheels 2 which can be steered. In order to prepare, the operation part 5 is formed in the central part of the machine body, and the seedling planting device (an example of a working device) is provided at the rear part of the machine body via the link mechanism 6.
A riding type rice transplanter is configured by connecting 7 so that they can be moved up and down freely. The seedling planting device 7 is configured by 6-row planting, and includes three planting transmission cases 8, a rotary case 9 rotatably supported on both left and right sides of the planting transmission case 8, and both ends of the rotary case 9. It is composed of a pair of planting claws 10 to be deployed, three grounding floats 11, a seedling stand 12, and the like.

Next, the fertilizer application device A will be described. Figure 1
As shown in FIG. 6, the fertilizer application apparatus A is a hopper 13 that stores fertilizer that is a granular material, and a fertilizer hose 14 that is a fertilizer transfer path for the fertilizer that flows down from the hopper 13 and is a start end portion. A feeding mechanism 15 for feeding a predetermined amount to the funnel portion 20, a grooving device 52 for supplying the fertilizer fed by the fertilizing hose 14 to the field, and a blower 16 for feeding the fertilizer fed to the funnel portion 20 to the fertilizing hose 14 by wind. The blower 16 is composed of a blower duct 17 for distributing and supplying the wind generated by the blower 16 to the fertilizer hoses 14 at a total of 6 places.

As shown in FIGS. 6 and 8, the feeding mechanism 15
In the roll case 18, the feeding roll R having a large number of concave portions 24a for fertilizer entry formed on the outer periphery in the circumferential direction is rotatable below the fertilizer discharge port of the hopper 13 and above the funnel portion 20. It is arranged and configured. The feeding roll R is configured to be driven and rotated by the engagement of the driven gear 19G integrally formed with the feeding roll R and the drive gear 21G of the drive shaft 21 to which power is input.

As shown in FIGS. 8 and 9, the feeding roll R
Is a hollow rotary shaft 19 having a driven gear 19G formed at one end, and a total of six partial rolls r1 to r3 having two kinds of widths and two kinds of depths are externally fitted to the hollow rotary shaft 19 in an integrally rotating manner. It is configured. The first partial rolls r1 and r1 in the center in the left-right direction,
The second partial rolls r2 and r2 which are the second from the center are the same as the concave rolls 24a whose width and depth are small, and the third partial rolls r3 and r3 at the left and right ends are large in width and depth. It is set to have a recess 24a.

Each of the partial rolls r1 to r3 is formed with a partition wall 24b only on one side of the right and left sides, and the partition walls 24b are arranged side by side so that they are all in the same direction, and one of the first parts is formed. The partition wall 24b of the roll r1 is arranged so as to coincide with the left-right center of the feeding mechanism. Each recess 24a is axially partitioned by disposing one partition ring 23 between the third end roll r3 at one end and the roll case 18.
Reference numeral 22 is a brush that scrapes the partial rolls r1 to r3.

As shown in FIGS. 8 to 11, on the upper side of the pay-out roll R, there is provided a shutter mechanism S having first to third partial shutters s1 to s3 which can be pushed and moved.
Are arranged. This shutter mechanism S makes it possible to adjust the amount of fertilizer applied per unit time in a plurality of stages by selectively setting one or more of the first to third partial rolls r1 to r3 to supply fertilizer. It is a thing.

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, fertilizer from the hopper 13 is prevented from flowing down to the feeding roll R. And a bar-shaped operating portion 25 that is pushed and pulled by being pinched with fingers. The blocking plate 26 is made of a spring plate and is elastically deformable in the vertical direction, and the operating portion 25 extends forward through the L-shaped insertion hole 79 formed in the roll case 18 when viewed in the front-back direction. Has been done.

When the operating portion 25 is picked up (pulled out forward), the blocking plate 26 is positioned on the feeding roll R to be in the closed posture in which the fertilizer supply is blocked (see the left side of FIG. 11), and the operating portion 25 is moved to the closed position. If it is pinched and pushed in (backward), the blocking plate 26 bends upward and is housed along the inner wall surface of the roll case 18, and only the thin operation part 25 is positioned on the feeding roll R, and the fertilizer is supplied. (See the right side of FIGS. 8 and 11).

For example, the first and second partial rolls r1 and r
When the shutters s1 and s2 for 2 are pulled out to a closed posture, and the third shutter s3 is pushed into an open posture, fertilizer application is performed in a state where fertilizer enters only the recess 24a of the third partial roll r3. Further, if 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 delivered per unit time. In this way, by pushing or pulling out the three partial shutters s1 to s3 individually or in combination, the amount of fertilizer fed out per unit time is divided into 5 levels (r1 or r2, r3, r1 + r2, r1 or r2 + r).
3, r1 + r2 + r3) can be adjusted.

Four sets of the feeding parts k formed by constructing the feeding mechanism 15 having the above-mentioned structure in a two-piece integrated type are arranged side by side, and the inner two sets of the four feeding parts k are fed out. In the parts k and k, one of the two shutter mechanisms S and S is fully closed and only one set of the feeding mechanism 15 operates.
It is set to the one for articles. That is, as shown in FIG. 10, two sets of 1's are provided between the left and right feeding sections k for two threads.
The fertilizer application device A for six articles is configured by arranging the feeding parts k for k articles.

The hopper 13 has two large-capacity hopper portions 13a, 13a for the left and right ends and a small-capacity hopper portion 1 for the inner one stripe.
3b and 13b are integrally formed and are made of resin. The front and rear widths of the small-capacity hoppers 13b and 13b are short ones located behind the driver's seat 27, and
The front and rear widths of the large-capacity hoppers 13a and 13a are equal to those of the driver's seat 2
It has a long structure that wraps around the left and right sides of No. 7, and the capacity is set according to the fertilizer amount for each of the two-row and one-row fertilizers. Further, the opening / closing lid 28 of the hopper 13 is an integrated product that extends over the 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 portion.

The drive 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 18b of each of the four roll cases 18, and the drive shaft 21 has the above-described structure. The drive gear 21G is externally fitted so as to be relatively rotatable.
The shift rotator 29 is externally fitted to the drive shaft 21 so as to rotate integrally and slidably, and includes a spring 30 for urging the shift rotator 29 toward the drive gear 21G on the occlusal side, and resists the spring 30. The shift rotator 29 is driven by the drive gear 21.
A swingable shift member 31 is provided so as to be separated from G. That is, the fertilization clutch (an example of a granular material clutch) 33 capable of forcibly oscillating the shift member 31 by pulling a wire (not shown) to interrupt the transmission of the rotational power of the drive shaft 21 to the feeding mechanism 15 33 Is configured.

As shown in FIGS. 1 and 4, the lower part of the vehicle body is
A traveling transmission shaft 35 that transmits power from the transmission case 4 to the rear axle case 34 at the rear of the machine body is arranged in the front and rear. The transmission case 36 for distributing the power from the traveling transmission shaft 35 to the fertilizer application A is connected to the rear axle case 34. It is provided in the position just before. The traveling transmission shaft 35 is configured by interlocking a front shaft portion 35a on the mission case 4 side and a rear shaft portion 35b on the rear axle case 34 side by a coupling 35c, and a gear case 36 on the rear shaft portion 35b. It is supported.

As shown in FIGS. 24 to 27, the gear case 36 is internally provided with a bevel gear mechanism 95 for decelerating the power of the front-rear traveling transmission shaft 35 and transmitting it to the left-right output shaft 96. A rotating arm 37 is attached to the protruding end of the shaft 96 from the gear case 36. The bevel gear mechanism 95 is configured by meshing a drive bevel gear 95a externally fitted to the rear shaft portion 35b via a one-way clutch 97 and a driven bevel gear 95b externally fitted to the output shaft 96, and also the output shaft 96 A fertilization clutch 98 is provided on the top. The one-way clutch 97 transmits power to the fertilizer application device A only when the machine body travels forward, and is set to idle when traveling backward.

That is, the clutch body 99 having the meshing portion 98a formed on the side surface is connected to the output shaft 9 by spline fitting.
6 is slidably fitted on the outer circumference of the clutch body 99, and the clutch body 99 is driven by a winding spring 100 to drive the driven bevel gear 95b.
The fertilization clutch 98 is configured by pressing and urging the driven bevel gear 95b 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, which has a cam portion 101a acting on the collar portion 99a of 9 at the lower end portion, penetrates through the gear case 36 and projects outward, and a driven arm 102 is fixed to the protruding end portion.

The gear case 36 has a split structure that is divided into left and right on a center line as a case that passes through the output shaft 96 and the clutch operating shaft 101.
Both a and the right case 36b have vertically symmetrical shapes, and are configured to be the same as each other to reduce the die cost. The operation hole 103 through which the clutch operation shaft 101 is inserted is provided just on the split surface w of the gear case 36. The operation hole 103 is formed on the inner peripheral surface of the operation hole 103 having the half-structure, and is engaged with the circumferential groove 101b formed on the outer periphery of the clutch operation shaft 101. The convex portion 104 to be inserted is formed on each of the cases 36a and 36b. With this structure, when the gear case 36 is assembled, the clutch operating shaft 101 is brought into the positioned state in which it is prevented from coming off.

The rear axle case 34 is supported by the front and rear brackets 105, 106 fixed to the left and right main frames 109, 109 of the body frame F so that the rear axle case 34 can freely roll left and right within a predetermined range around the rolling fulcrum V facing forward and backward. Has been done. The gear case 36 is basically a traveling transmission shaft 35.
One of the assembling bolts 107 for the left and right split cases 36a and 36b is extended and bolted to the front bracket 105 via the connecting bracket 108. That is, the gear case 36 is locked to the machine body side at one location apart from the axis V of the traveling transmission shaft 35.

In the mission case 4, a planting clutch (an example of a work clutch) 110 for connecting and disconnecting the power of the PTO shaft 70 arranged on the lower abdomen of the vehicle body, and a planting lever 112 for performing on / off operation of the clutch. Is equipped with. Then, as shown in FIG. 27, when the planting lever 112 is operated to turn on the planting clutch 110, the fertilization clutch 98 is also turned on, and when the planting clutch 110 is turned off, the fertilization clutch 98 is also turned off. , These both clutches 11
0 and 98 are linked by the operation wire 113.

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. The passive arm 39 and the drive arm 37 are connected to each other. Are linked by a rod 40, and a power conversion mechanism 41 for converting both upward swing and downward swing of the passive arm 39 into rotation of the drive shaft 21 in a fixed direction is provided. That is, the drive shaft 21 is continuously rotated in a fixed direction while the structure is provided with one passive arm 39 which is reciprocally driven and swung by the rotating drive arm 37.

The power conversion mechanism 41 is swingable at a fulcrum Y, and a driven arm 43 fitted externally to the drive shaft 21 via a second one-way clutch 42 that transmits only a rotational force in the same direction as the first one-way clutch 38. The bell crank 44, a rod 45 that interlocks the front end of the passive arm 39 and the bell crank 44, and a rod 46 that interlocks 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 idly driven by swinging to one side of the passive arm 39, and the second one-way clutch is swingable by swinging to the other side of the passive arm 39. It is configured as a one-way rotation mechanism that interlocks and connects the passive arm 39 and the driven arm 43 so that only 42 is idle-driven.

Therefore, when the passive arm 39 swings upward, the first one-way clutch 38 integrally rotates to rotate the drive shaft 21 in the arrow A direction, as shown in FIG. Driven arm 4 that will rotate in the direction b
The rotation of 3 causes the second one-way clutch 42 to idle. When the passive arm 39 swings downward, as shown in FIG. 13B, the first one-way clutch 38, which rotates in the arrow B direction, idles and rotates in the arrow A direction. The rotation of the driven arm 43 is such that the second one-way clutch 42 integrally rotates to rotate the drive shaft 21 in the same direction as arrow a.

As shown in FIGS. 7, 9, and 20 to 22, the fertilizer application clutch 33, the edge clutch 81 for connecting and disconnecting the power to the planting mechanism 80, and the power for the vertical seedling feeding mechanism 82 are connected and disconnected. Each of the three vertical feed clutches 83 corresponding to two sets is provided, and the three types of clutches 33, 8 are provided.
1, 83 are provided with an interlocking mechanism 84 for performing a single entry / disengagement operation by a single fertilizer application clutch lever 85 that swings up and down around a lateral fulcrum z.

The interlocking mechanism 84 has an inner wire 86i which is interlockingly connected to the fertilizer clutch lever 85, the vertical feed clutch 83 and the fertilizer application clutch lever 85, one end of which is fixed and the other end of which is a shift member of the fertilizer application clutch 33. 31 and an outer wire 86o that is interlockingly connected to 31. In other words, a swing arm 76 that is rotatable around the vertical axis y in association with the shift member 31 is provided at a position near and behind the fertilizer clutch lever 85 supported by the fertilizer frame. At the base end side receiving 77 of the outer wire 86o is formed.

The tip of the outer wire 86o is fixedly supported by the tip side receiver 78 attached to the planting frame, the tip of the inner wire 86i is interlocked with the driven arm 81a of the edge clutch 81, and the inner wire 86i on the front side thereof is also connected. A driven arm 83a of the vertical feed clutch 83 is interlockingly connected to a middle portion of the.

As shown in FIG. 21, the fertilizing clutch lever 85 has its ascending swing end set to the clutch disengaged position OFF and its descending swing end set to the clutch engaged position ON. Then, the inner wire 86 of the fertilizer application clutch lever 85
In the clutch disengaged state, the connection point 85a of the line segment D.i of the line segment D.i. P. Positioned above the line segment, and when the clutch is engaged, the line segment D. P. It is configured to be located on the lower side. Then, the inner wire 86i is connected to the longitudinal feed clutch 83 and the ridge clutch 8
The dead point mechanism that keeps the fertilizer application clutch lever 85 in both the clutch engaged and disengaged positions ON and OFF is constantly biased by the clutch energizing spring (not shown) equipped in 1. Configured.

The vertical swing range of the fertilizer application 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 and 86o are pulled to the lever side and all the three types of clutches 33, 81 and 83 are disengaged, and the lever is operated to the clutch engaged position ON. For example, both the inner and outer wires 86i and 86o return to the opposite lever side by the above-mentioned clutch engagement biasing force, and all three types of clutches 33, 81 and 83 are engaged.

As described above, since the central two sets of the two-row integrated type feeding parts k, k use one row, the fertilization clutch 33 has four rows even though it is a six-row rice transplanter.
There is an individual. On the other hand, since the ridge clutch 81 and the longitudinal feed clutch are both set to 3 in the two-row integrated type,
Of the individual fertilization clutch levers 85, the central one is such that the fertilization clutches of the two sets of feeding portions k, k are operated simultaneously. That is, as shown in FIG. 21A, the inner two swing arms 76, 76 in the left-right direction are interlocked by the interlocking rod 87 so that they can be turned on and off at the same time. The swing arm 76 is provided with a base end side receiving 77.

Further, as shown in FIG. 21B, in order to dispose the fertilizer application clutch lever 85 on the left side in the machine advancing direction toward the inside of the machine with respect to the position of the corresponding swing arm 76, the inner wire 86i is provided. An interlocking arm 88 that connects the base ends is arranged on the left side of the machine body, and the interlocking arm 88 and the fertilizer clutch lever 85 are interlockingly connected by a fulcrum shaft 89 having a fulcrum z.

As shown in FIG. 23, a manual operation mechanism H for rotating the payout roll R in a fixed direction with a manual handle 92 is provided. That is, the drive shaft 2 having a regular hexagonal cross section
A manual handle 92 is provided at the right end of 1 so that it can be stored. The manual handle 92 is made of a steel strip bent into a U shape so that the inner side distance is equal to the width across flats of the drive shaft 21. Each of the arm portions of the manual handle 92 is provided with an elongated hole 9 that fits into a pin 91 supported by the drive shaft 21.
3 is formed. The elongated holes 93 are formed with diaphragm protrusions 93a facing the positions near both ends thereof, so that a detent function capable of lightly engaging the pins 91 at each end of the elongated holes 93 and holding the position is produced.

Normally, as shown by the solid line in FIG. 23, the pin 91 is located at the end of the elongated hole 93 on the handle tip side.
It is stored so as to rotate integrally with the drive shaft 21, and when necessary, as shown by the phantom line in FIG.
By slidingly moving the pin 91 so as to be located at the handle base end side and rotating it by 90 degrees, the manual handle 92 can be brought into an operating posture in which it is vertically projected from the drive shaft 21. Although not shown, the manual handle 92
In order to facilitate the turning operation of the handle, the handle may be provided with a handle on the tip side.

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 feeding parts k in a state of being connected to the funnel part 20. D
1 and a connecting duct D2 made of a hard material such as PE resin or PP resin for sequentially connecting and connecting the partial duct D1 and the blower 16 to each other to form a single air blowing path.
The connecting duct D2 includes a total of three intermediate connecting ducts 49 that connect and connect the adjacent partial ducts D1 to each other, and a start end side connecting duct 50 that connects and connects the partial duct 48 on the most ventilation side and the blower 16. It is composed of four parts.

The partial duct D1 is composed of the two partial ducts 48, 48 on the upstream side, the partial duct 51 on the downstream side on which the lid 51b is integrally formed, and the second partial duct 47 from the downstream side on the downstream side. It consists of types. Then, in order to equalize the wind force supplied to each of the funnel parts 20 in each feeding part k, these partial ducts 51, 47, 4
Protrusions 51a, 47 projecting into the air flow path in 8, 48
a, 48a, 48a are integrally formed. Blower side 2
The individual protrusions 51a and 47a are the same protrusion, but the two protrusions 48a on the upstream side of the air blow are larger than these.

That is, when the air intake areas of the blower ducts 17 are the same, the wind pressure tends to increase toward the leeward side and the wind direction per unit time tends to be large. It has been found that it is effective to provide a throttle inside the duct to reduce the cross-sectional area of the duct on the windward side and the intake side on the downstream side.

Therefore, the projections formed on each of the four partial ducts D1 may be made larger in order from the windward side. Then, the four partial ducts D1 are all different parts and the die cost becomes high. There are disadvantages in terms of parts management and easy assembly errors. Therefore, the large protrusion 48
By means of arranging two kinds of two partial ducts 48, 47 (51) each having a and small protrusions 47a, 51a, uniform use of air volume to each funnel portion 20 and elimination of the above disadvantages Is intended.

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

As shown in FIGS. 15 to 17, the blower 16 installed on the left side of the machine body is a centrifugal type in which an impeller 54 rotatably driven by an electric motor 53 is housed in a casing 55 having a split structure. Configured, casing 55
A downward intake port 55a and a rightward exhaust port 55b are formed on the lower side. The air exhaust port 55b has a structure that is inserted into the starting end side of the starting end side connecting 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 connecting duct 50 (the electric motor 53
Side), a vertical axis X, that is, a vertically oriented portion of the support pipe 57 on the machine body frame side, is fitted so as to be relatively rotatable while being vertically positioned. As a result, the blower 16 has a closed working posture in which the exhaust port 55b is inserted into and connected to the starting end side connecting duct 50, and the blower 16 is rotated forward from the acting position to connect the blowing port 55b to the starting end side connecting duct 50. The posture can be freely changed to the open retracted posture (see the phantom line in FIG. 18) in which the connection connection portion is exposed by releasing.

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

The main support frame 58 is composed of a channel material whose upper side projects rearward from the lower side and has a substantially U-shaped cross section and extends left and right, and each roll case 18 is fixed by two mounting bolts 61. . Large and small hoppers 13a,
Each of the 13b is equipped with a total of four fertilizer remaining amount sensors 62 for detecting that the fertilizer is running low, and the main support frame is provided to guide the left and right wire harnesses 63, 63, which are the wirings, to the machine body. It is arranged by utilizing the space inside 58 (see FIG. 8).

The main support frame 58 includes a main attachment frame 59 at the center of the left and right, which is welded to the main support frame 58, and a total of two sub attachment frames 60, 60 bolted to the left and right of the main attachment frame 59.
And are supported by the body frame F. The main mounting frame 59 is configured by integrally forming 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 bent backward at 90 degrees, and is bolted to a support member (for supporting the fender 65) 67 welded to the rear frame 66.

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

On the lateral sides of the seedlings planted by the planting claws 10, there are provided groovers 52 for feeding fertilizer to the rice field while forming grooves, and the six groovers 52 are the ground floats 11. Two are attached to each. Left and right outside 2
In the feeding section k, k of the set, each feeding mechanism 15 and two groovers 52 are connected by two fertilizing hoses 14,
In the two left and right inner feeding units k, k, one feeding mechanism 15 and one grooving device 52 are connected by one fertilizing hose 14.

With the above structure, the rotary case 9 of the seedling planting device 7 is rotationally driven by the power of the PTO shaft 70, and the pair of planting claws 10 alternately take out the seedlings from the seedling table 12 and plant them on the rice field. Planting work of seedlings is performed.
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
1 is converted into rotational movement of the drive shaft 21 in a fixed direction, and the feeding mechanism 15 is driven.

Then, the fertilizer from the hopper 13 enters the concave portion 24a of the feeding roll R, and the fertilizer is fed to the funnel portion 20 by the rotation of the rotary shaft 19. The blower 16 blows the funnel portion through the blower duct 17. 20 and fertilizer is fed by the high pressure wind through the fertilizer application hose 14 to the grooving device 52.
The fertilizer is rapidly supplied to the ditch, and the fertilizer is supplied to the ditch of the field formed by the grooving device 18 to perform the fertilizing work.

As shown in FIG. 13, the connection position of the passive arm 39 with the rod 40 is changeable, and the swing angle of the passive arm 39 with respect to the reciprocating motion of the rod 40 is changed by changing the connection position. Drive shaft 21
The amount of fertilizer fed can be adjusted by changing the rotation speed of the feeding roll R.

As a bridging clutch 81 for power transmission / transmission / interruption control of the power transmission / transmission / shutdown operation for one planted transmission case 8 (a pair of rotating cases 9). The fertilizer application clutch lever 85 is provided. As shown in FIGS. 8 and 9, the operation arm 31 is swingable around the axis y of the fixed portion of the feeding portion k.
Has its end engaged with the shift rotator 29, and the fertilizer application clutch lever 85 and the operation arm 31 are connected by the Bowden wire 86.

Thus, for example, the fertilizer application clutch lever 85 of the right transmission case 8 with plant is operated to the transmission cutoff side,
When the ridge clutch 81 of the right-side planted transmission case 8 is transmission-interrupted, the pair of rotating cases 9 of the right-side planted transmission case 8 stop, and the two right-side planting strips are not planted. That is, the drive shaft 15 of the fertilizer feeding section k corresponding to the two planting strips is stopped, and the supply of fertilizer to the two planting strips on the right side is stopped.

As shown in FIG. 8, a fertilizer discharge port 71 is formed on the front side of the brush 22 just below the shutter mechanism S, and the discharge port 71 is formed by a switching plate 72 swingable around the horizontal axis W. Is configured to open and close freely. Outlet 71
Is connected to a discharge hose 74 via a merging path 73, and during normal seedling planting work, the switching plate 72 is operated in a closed posture, and all fertilizer from the hopper 13 is supplied to the feeding mechanism 15. Then, when the seedling planting work is completed, when the switching plate 72 is operated in the open position with the blower 16 and the fertilizer application device A stopped, the fertilizer remaining in the hopper 13 can be discharged through the discharge hose 74. it can.

By the way, the feeding section k has two funnel sections 2
The two-row integrated type is basically provided with 0, 20 and two sets of roll cases 18 corresponding to the width, but the two feeding parts k in the center of the left and right sides are provided with one funnel in order to match for six-rows. 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 center of the left and right sides are provided.
In 13b, the inclined bottom surface 75 is additionally formed so as to have a supply port width corresponding to one set of the partial rolls r1 to r3.

[Other Embodiments] 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. A direct seeding machine may be used as the paddy working machine.

[Brief description of drawings]

[Figure 1] Side view of a riding rice transplanter

[Figure 2] Plan view of a riding rice transplanter

[Figure 3] Plan view of the fertilizer hopper

FIG. 4 is a rear view of the fertilizer application section.

FIG. 5 is a front view of the fertilizer application part.

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

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

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

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

FIG. 10 is a cross-sectional view showing the structure of a single-line 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 the blower.

FIG. 17: Rear view of blower

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

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

FIG. 20 is a plan view showing the operating structure of each fertilizer application, furrow, and longitudinal feed clutch.

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

FIG. 22 is an operation diagram showing the operating state of the fertilizer application clutch.

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

FIG. 24 is a vertical cross-sectional view showing the structure of a power take-out unit for 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 cross-sectional view of a main part showing a gear case mounting structure.

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

[Explanation of symbols]

4 mission case 7 working device 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 fertilizer clutch 101 clutch operation shaft 101b groove 103 operation hole 104 Convex portion 110 Planted clutch A Fertilizer application R feeding roll V Shaft w split surface H Manual operation mechanism R feeding roll

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shinsuke Otani 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Plant (56) References JP-A-10-215621 (JP, A) JP-A-10- 234206 (JP, A) JP 10-295130 (JP, A) JP 10-109552 (JP, A) JP 8-130940 (JP, A) Actual flat 2-102918 (JP, U) Actual Kaihei 8-801 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01C 15/00-23/04 A01C 11/00 302 A01C 11/02 A01B 71/00-71 / 08

Claims (9)

(57) [Claims] 1. A working machine and a fertilizer applicator are mounted on a traveling machine body, and a traveling transmission shaft and a PT are installed from a mission case.
The O-axis is extended to the front by the power branched from the traveling transmission shaft.
To drive the fertilizer feeding mechanism of the fertilizer applicator, and
To drive the working device with power from the PTO shaft
Paddy working machine with fertilizer application configured in . 2. A one-way clutch that is idled when the traveling transmission shaft is driven in a direction in which the machine body travels backward is provided in a transmission mechanism that interlocks the traveling transmission shaft and the feeding mechanism. The paddy work machine with a fertilizer application device according to claim 1. 3. A fertilizer clutch for connecting / disconnecting power to the feeding mechanism and a work clutch for connecting / disconnecting power to the working device.
And Ji provided, also becomes enters the fertilization clutch and the work clutch is entered, the working clutch so is also cut the fertilization clutch to become cut, claim 1 or 2 are coordinated these two clutches Paddy working machine with fertilizer application described in. 4. The paddy field working machine with a fertilizer applicator according to claim 3, further comprising a manual operation mechanism capable of manually driving the feeding mechanism. 5. A traveling machine equipped with a working device and a fertilizer applicator, and a fertilizer feeding mechanism of the fertilizer applicator is transmitted from a traveling transmission shaft arranged in the front-rear direction to a left-right output shaft through a gear mechanism. Paddy work machine with fertilizer application configured to be driven by deceleration power. 6. A fertilization clutch for connecting and disconnecting the power from the traveling transmission shaft to the feeding mechanism is provided in a gear case having a split structure surrounding the gear mechanism, and a clutch operating shaft for opening and closing the fertilization clutch. An operating hole through which the operation shaft is inserted is provided on the split surface of the gear case, and a convex portion that engages with a groove formed on the outer periphery of the operation shaft is integrally formed on the inner peripheral surface of the operation hole of the half structure. Item 5. A paddy work machine with a fertilizer application apparatus according to Item 5. 7. The gear case is externally fitted and attached to an intermediate portion of the traveling transmission shaft, and the gear case is locked to the machine body side at one location apart from the axis of the traveling transmission shaft. Paddy working machine with fertilizer application according to 5 or 6. 8. The travel transmission shaft is a shaft for transmitting power from a transmission case at the front of the machine body to a rear axle case at the rear of the machine body, and the gear case is fitted onto the travel transmission shaft immediately before the rear axle case. It is attached to claim 5-7
A paddy work machine with a fertilizer application apparatus according to any one of 1. Fertilizer feeding mechanism 9. Before SL fertilizing device, configured to that feed the fertilizer by a predetermined amount in accordance with the rotation in a fixed direction of the feed roll, this feeding mechanism, the feed roll to said predetermined direction fertilizing device with paddy working machine according to claim 1, wherein the one-way clutch to rotate are to deploy only.