JP2000324919A - Rice transplanting machine with fertilizing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the discharge of remaining fertilizer in a fertilizer-storing hopper in a fertilizing apparatus to be smoothly and rapidly carried out by a simple structure. SOLUTION: Remaining fertilizer in a fertilizer-storing hopper 31 connected to the upper sides of a plurality of delivering parts 32 arranged in a lateral row in a fertilizing apparatus is received by an oblong vessel 77 by forming remaining fertilizer-discharging openings bored at each of the lower parts of the front surfaces of cases of delivering parts 32, so as to be opened and closed by opening and closing stoppers, extending discharging pipe lines 76 connected to each of the remaining fertilizer-discharging openings to the positions right under a traveling machine body 1 in the side view, so as to face to the upper parts of the oblong vessel 77 arranged between spokes of rear wheels 9, 9 at right and left both sides.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a rice transplanter provided with a fertilizer application device for supplying fertilizer to a side of a seedling streak by a seedling transplanter arranged at a rear portion of a traveling machine body.

[0002]

2. Description of the Related Art Conventionally, this type of fertilizer is disclosed in
-107756 and JP-A-10-215622, a horizontally long fertilizer storage hopper capable of replenishing fertilizer from a step behind a driver's seat of a traveling body, and a fertilizer storage hopper. It was composed of a feeding section for feeding the granular fertilizer from the hopper, and a supply pipe for guiding the fed fertilizer to the side of the planting strip of the seedling planting apparatus by the pressurized air from the blower.

[0003] Fertilizer is applied to the soil on the side of each seedling streak simultaneously with the seedling planting operation in the field. After the operation, the remaining fertilizer is left in the fertilizer storage hopper as it is. When the work is resumed at a later date, there is an inconvenience that the material is clogged in the feeding portion and is not supplied smoothly.

For this reason, a device has been devised to smoothly discharge the residual fertilizer in the fertilizer storage hopper. For example, in Japanese Unexamined Patent Publication No. 10-215622, in the rear part of the traveling machine body, in plan view, the lower part of the fertilizer storage hopper, which is oblong in a direction perpendicular to the traveling direction of the rice transplanter, is attached to each seedling attachment strip. Dispensing sections equipped with a dispensing mechanism for each corresponding location are continuously arranged in a row in a row at a predetermined interval, and run below the funnel-shaped guide section at the lower end of the dispensing section while communicating with the lower end outlet. A fertilizer supply unit that opens toward the rear of the machine body is formed, and the supply pipe is connected to the rear end of the fertilizer supply unit. On the front side of each fertilizer supply unit, the width direction (the traveling direction and An air supply unit is formed which is connected to a side surface of a round pipe-shaped air tank arranged at a predetermined interval along a right angle direction (at a right angle direction) and sends powdery fertilizer dropped from the feeding unit to a supply pipe side together with compressed air. ing. Further, a discharge portion for discharging the residual fertilizer to the outside is formed below a lower end outlet of the guide portion. Each of the guide portions is provided with a powdery and granular fertilizer fed from the feeding mechanism in the direction of the fertilizer supply unit. A switching valve is provided for switching between a supply state guided to the discharge section and a discharge state guided to the discharge section.

The discharge hoses connected to the respective discharge portions extend so as to guide the discharged fertilizer downward and forward of the traveling machine body. At the lower part, it merges with the large-diameter merging line, and is divided into left and right sides. From the fertilizer discharge port on the front lower side (below the traveling body between the front and rear wheels) of the traveling body, It proposes one that is configured to extend outside from the lateral end in the width direction.

[0006]

However, in the configuration of the prior art, the discharge hose from the feeding portion disposed at the center in the width direction of the traveling body is bent laterally to the lateral end of the traveling body in the width direction. Therefore, the downward inclination angle at the lateral bending portion becomes extremely small. Therefore, if the fertilizer in the form of powder is dropped into the discharge hose only by its own weight, it will be clogged at the laterally bent portion. Therefore, even when the residual fertilizer is discharged, the blower is operated to release the compressed air from the air tank. Although it was necessary to use power, once the fixed fertilizer was clogged in the middle of the discharge hose, there was a problem that it was difficult to eliminate the clogging phenomenon even with the pressurized air.

[0007] Furthermore, when the residual fertilizer is discharged, pressurized air is blown into the collection container, and powdery fertilizer is spilled out of the collection container, which makes it extremely difficult to recover the residual fertilizer.

The present invention has been made to solve these conventional problems, and a rice transplanter with a fertilizer application device capable of recovering the remaining fertilizer smoothly and quickly by its own weight with a simple structure. The purpose is to provide.

[0009]

According to a first aspect of the present invention, there is provided a rice transplanter equipped with a fertilizer application device, which is provided with a pair of right and left front and rear wheels. A fertilizer application device disposed in front of the seedling plant and at the rear of the traveling machine body is connected to an air tank for supplying fertilizer conveying air to a front end, and feeds fertilizer to each planting unit of the seedling plant. A hose joint having a supply pipe connected to a rear end thereof, a feed case connected to the upper surface of the front and rear halfway portion of the hose joint, and a fertilizer storage hopper connected to an upper side of the feed case; Are arranged at a rear portion of the traveling body in a row at substantially constant intervals along the width direction of the traveling body, and in each feeding case, a residual fertilizer discharge port for removing residual fertilizer is provided so as to be openable and closable. Each residual fertilizer The discharge line connected to the outlet, in which in a side view, is stretched substantially directly below direction of the rear of the traveling machine body.

[0010] The invention described in claim 2 is the same as the claim 1.
In the rice transplanter with a fertilizer device according to the above, in a rear view of the traveling body, all the discharge pipelines are extended substantially vertically downward, into a left and right long container disposed near the pair of left and right rear wheels. And receiving the discharged residual fertilizer.

According to a third aspect of the present invention, in the rice transplanter with the fertilizer application device according to the first aspect, the width of the step portion at the rear portion of the traveling body is set to cover a space between upper portions of the pair of left and right rear wheels. Outlet cases formed in the left and right longitudinal direction so as to be arranged in the one row, and the discharge conduits provided in the feed case arranged within the width of the step portion are, in a rear view of the traveling body, each of the discharge pipes. The discharge pipe is extended downward substantially vertically so that the lower side of the discharge pipe provided in the feeding case disposed outside the left and right side ends of the step portion is within the width of the step portion. It is configured to be offset and receive the discharged residual fertilizer in a left and right long container disposed below the step portion.

Further, according to a fourth aspect of the present invention, in the rice transplanter with the fertilizer application device according to the first aspect, the lateral width of the step portion at the rear portion of the traveling machine body is covered between the upper portions of the pair of left and right rear wheels. The left and right longitudinally formed as described above, of the delivery cases arranged in a line, the discharge pipe provided in the delivery case arranged between the upper portions of the pair of left and right rear wheels,
In a rear view of the traveling body, the respective discharge pipelines extend downward substantially vertically, and the lower side of the discharge pipeline provided in a feed case disposed outside the upper part of the pair of left and right rear wheels, The left and right rear wheels are offset so as to be located between the pair of left and right rear wheels, and the left and right long containers disposed below the pair of right and left rear wheels are configured to receive the discharged residual fertilizer.

According to a fifth aspect of the present invention, in the rice transplanter with a fertilizer according to any one of the second to fourth aspects, a container for collecting the residual fertilizer is configured to be stretchable. .

[0014]

Next, an embodiment of the present invention will be described. 1 is a side view of the riding type rice transplanter, FIG. 2 is a plan view of the riding type rice transplanter, FIG. 3 is a plan view showing an arrangement state of the fertilizer application apparatus, FIG. 4 is a rear view showing an arrangement state of the fertilizer application apparatus, and FIG. Is a sectional side view of a main part of the power transmission unit, and FIG. 7 is a sectional side view of a main part of the fertilizer application device.

The rice transplanter according to the present embodiment is a riding type rice transplanter of a six-row planting type,
The engine 4 is mounted in the hood cover 3 at the front of the vehicle. After the power of the engine 4 is transmitted to the rear transmission case 5, the power is transmitted to the front wheels 7 via the front axle case 6 at the front of the body frame 2 and to the rear wheels 9 via the rear axle case 8 at the rear. Each is transmitted.

A driver's seat 11 is provided on an upper surface of a vehicle body cover 10 which covers an upper surface of the vehicle body frame 2 and the like. An operator sitting on the driver's seat 11 operates a round handle 12 standing upright from the rear end of the hood cover 3. Thus, the front wheels 7 are steered.

A seedling plant 14 is vertically movably connected via a parallel link mechanism 13 connected to the rear end of the traveling machine 1. The seedling plant 14 has a central transmission case 17 that is transmitted from a PTO shaft 15 projecting from the rear end of the transmission case 5 via a universal joint transmission shaft 16, and transmission shafts on both left and right sides of the central transmission case 17. Left and right transmission cases 18, 18 connected at appropriate intervals via a connection pipe (not shown) having the inside mounted therein, and a seedling table 19 disposed forwardly inclined such that an upper end thereof approaches a rear portion of the traveling body 1. It consists of a float 20 and the like provided on the lower surface of each of the transmission cases 17, 18, and 18 and sliding on the mud surface of the field. A roller at the upper end of the upright support column 22 is slidably supported on both the left and right sides, while the three transmission cases 17, 18,.
The lower end of the seedling mounting table 19 is slidably mounted on the lower rail 23, which is mounted between the upper surfaces of the base 18.

A rotary type seedling planting mechanism 24 that rotates up and down is disposed on both left and right sides of the rear part of each transmission case 17, 18, 18, and the planting rod 2 in each seedling planting mechanism 24.
6 moves up and down between the lower end of the seedling mounting table 19 and the field scene with the planting claw at the tip of each planting rod 26.
The seedling mat is divided into single plants and planted in a field (see FIGS. 1 and 2).

The seedling plant 14 is configured to be able to move up and down by a hydraulic cylinder 25 for elevating.

Next, referring to FIGS. 1, 3 to 9,
The configuration of the fertilizer application device 30 will be described. The present embodiment of the six-row fertilizer device 30 includes a horizontally long fertilizer storage hopper 31 disposed at the rear of the traveling machine body 1 in a direction perpendicular to the traveling direction of the rice transplanter in plan view; At the lower part of the hopper 31, a number (six) of feeding portions 32 corresponding to the respective seedling attachment strips arranged in a line at appropriate intervals, and the traveling direction connected to the lower end of each of the feeding portions 32 A hose joint 33 extending forward and backward, a round pipe-shaped air tank 34 which is arranged long along the lateral width direction (perpendicular to the traveling direction) of the traveling body 1 and is connected to the front end of each hose joint 33; A hose-shaped supply made of a flexible (flexible) soft synthetic resin, which is connected to the rear end of the joint 33 and extends to a groove 35 provided on the left and right sides of the three floats 20 in the seedling plant 24. And a like 36.

At the rear end of the body frame 2, a rear wheel 9 is provided.
A support frame for supporting the fertilizer application device 30 is fixedly connected to the upper side of the upper end. In other words, a pair of left and right longitudinally connecting frames 37, 37 are connected to the rear end of the body frame 2 via a support frame 43 or the like, and extend across the upper surfaces of the pair of connections 37, 37 in the width direction of the traveling machine body. The lower horizontal frame 39 that extends and a pair of upper and lower upper horizontal frames 40 and 41 that are disposed above the lower horizontal frame 39
The lower horizontal frame 39 and a pair of front and rear upper horizontal frames 40 and 41 are connected to auxiliary support plates 42 and 42 by welding. It is welded and joined to form a support frame (see FIGS. 3 and 5). The lower horizontal frame 3
9 and the rear upper horizontal frame 41 have an L-shaped cross section, and the front upper horizontal frame 40 has a round pipe shape in cross section. The flat step portion 27 on the rear side of the driver's seat 11 in the vehicle body cover 10 is used for workers to walk to supply fertilizer to the fertilizer storage hopper 31 and to take out residual fertilizer as described later. Workplace (scaffolding)

A turbo blower-type blower 44 is connected to the base end of the air tank 34 (the right end in the traveling direction of the traveling body 1), and the tip of the air tank 34 (the right end in the traveling direction of the traveling body 1) is a cover (not shown). It is closed so that it can be opened and closed.

The fertilizer storage hopper 31 is provided with seedlings for seedlings.
The storage cases 31a for each row are connected in a horizontal row, and adjacent storage cases communicate with each other at the recesses 31b at the upper end on both left and right sides, so that the amount of stored fertilizer is evenly distributed to the left and right. It is formed so that it can be removed. The upper opening of the storage case 31a for the six rows is integrally covered with a horizontally long main cover 45 which can be opened and closed.
The main lid 45 is formed with an auxiliary entrance 45a opening above the storage case 31a for each row.
An auxiliary lid 46 is provided detachably with respect to a (see FIGS. 4, 7, and 10). Thus, when a large amount of fertilizer is put into the six fertilizer storage hoppers 31, the main lid 45 may be opened and the entire upper surface of the fertilizer storage hopper 31 may be greatly opened to store the fertilizer for each fertilizer. When the main lid 45 is opened when the fertilizer is replenished in the case 31a or when it rains, if the fertilizer in the fertilizer storage hopper 31 is inconvenient to be wet and wet, the auxiliary lid 46 is opened for one minute. Fertilizer can be run every time.

As shown in FIGS. 6 to 9, the feeding portion 32 connected to the lower end of each of the storage cases 31a is connected to
An upper case 48 having an introduction chamber 47 for introducing fertilizer in the fertilizer storage hopper 31, and a funnel-shaped (lower constricted) lower case 49 detachable from the lower surface of the upper case 48.
This constitutes a delivery case. And introduction room 4
7 and a fixed plate 51 fixed to the lower surface of the upper case 48 and rotating adjacent to the lower surface of the fixed plate 51 so as to rotate. A perforated plate 53 having a plurality of perforated plates 52 vertically penetrated at the same radius of rotation so as to be able to communicate with the slot 50, and disposed adjacent to the lower surface of the perforated plate 53;
At a phase position below the introduction chamber 47, a large radius closing the lower surface of the perforated plate 52 is provided, and at a phase position in a pre-rotational direction from the introduction chamber 47, a cutout opening the lower surface of the perforated plate 52 is provided. A bottom plate 54 having a notch (small radius portion) and non-rotatably fitted in the lower case 49, a vertical drive shaft 55 for driving the perforated plate 53 to rotate, and the like are provided. Lower case 49
A hose joint 33 for connecting the supply pipe 36 and a pipe 56 connected to the pipe-shaped air tank 34 is connected to a lower end of the hose.

The introduction chamber 47 is provided on the upper surface of the upper case 48 on the side closer to the driver's seat 11 of the traveling body 1 (hereinafter referred to as the front side). The upper case 4
On the upper surface of 8, a bearing 61 through which a lateral transmission shaft 58 described later penetrates, a bevel gear 59 fixed to the lateral transmission shaft 58, and a bevel gear 60 at the upper end of the vertical drive shaft 55 meshing with the bearing 61 are housed. A storage part 62 is formed adjacent to the rear of the introduction chamber 47, and the vertical drive shaft 55 is, as shown in FIG.
Backward as going downward (direction approaching seedling plant 14)
It is arranged to be inclined forward. Accordingly, the fixing plate 51 is inclined forward so that the front side is low and the rear side is high, and the communication groove 50 in the fixing plate 51 and the opening 63 at the lower end of the introduction chamber 47 for the communication groove 50 are ,
That is, it opens obliquely rearward and downward.

The vertical drive shaft 55 extends obliquely downward through the fixed plate 51, the perforated plate 53 and the bottom plate 54, and the vertical drive shaft 55 and the perforated plate 53 are engaged with each other. It rotates together. The support plate 65 fixed to the plurality of support portions 67 protruding from the inner peripheral surface of the lower case 49 penetrates a lower portion of the vertical drive shaft 55 and has a holding coil spring 66 fitted on the outer periphery of the vertical drive shaft 55. Support the lower end. The bottom plate 54 is pressed and urged toward the perforated plate 53 at the upper end of the holding coil spring 66.

The front wall 49a of the lower case 49, which is located below the introduction chamber 47 in the upper case 48 as the feeding case, approaches the lower end of the forwardly inclined vertical drive shaft as it goes down. By tilting forward as described above, a large space is formed between the lower part of the front wall 49a and the front end of the hose joint 33, and the air tank 34 can be arranged in the space (FIG. 7). And FIG. 9). The upper case 48, the lower case 49, and the hose joint 33 in the feeding case,
Are each formed of a synthetic resin material.

As shown in FIG. 7, a discharge guide cylinder 70 is integrally protruded downward and forward from the lower part of the front surface of the introduction chamber 47 in the upper case 48 as the feeding case. The discharge guide tube 70 has, for example, a rectangular tube shape in cross section, and a bottom is provided with a residual fertilizer discharge port 71 having a substantially rectangular shape in plan view. The residual fertilizer discharge port 71 is opened above the front end of the air tank 34 on the front side.

An operating body 73 is projected forward and downward from the base end of an opening / closing plug 72 inserted in the discharge guide cylinder 70 so as to be movable back and forth. When the 72 is pushed in, the surface is inclined so that the surface thereof is substantially the same as the front wall of the introduction chamber 47, and the bottom of the opening / closing plug 72 is at a position for closing the residual fertilizer discharge port 71.

When the opening / closing plug 72 is retracted to a position where the stopper tube 74 fitted and fixed to the outer surface of the discharge guide tube 70 is fixed, the residual fertilizer discharge port 71 is fully opened, and the opening / closing plug 72 is opened.
It is configured such that the residual fertilizer can be smoothly guided to the residual fertilizer discharge port 71 along the surface (inclined surface) of. The discharge guide cylinder 70, the stopper cylinder 74, and the opening / closing plug 7
By replacing the locking pin 75 with the locking hole formed in the opening and closing member 2, the position of the opening and closing plug 72 can be fixed at the closed position and the open position (see FIG. 7).

On the lower surface side of the discharge guide cylinder 70, a flexible discharge pipe 76 made of a soft synthetic resin and extending substantially downward from the residual fertilizer discharge port 71 in a side view is attached (FIG. 1). 7 and 11). By arranging the discharge conduit 76 in a substantially vertical shape in this way, the entire length of the discharge conduit 76 is shortened, and a portion with a gentle inclination is not generated in the middle thereof, so that the discharge conduit 76 falls by its own weight from the residual fertilizer discharge port 71. Residual fertilizer quickly flows down to the bottom,
The trouble of jamming on the way can be eliminated.

Further, in the first embodiment, these discharge conduits 76 are provided in the front view (rear view) of the traveling body 1.
All are stretched almost directly below. In this way, a portion with a gentle slope is reliably eliminated in the middle of the discharge line 76, so that the residual fertilizer does not clog, the falling speed can be increased, and a quick discharge operation can be performed.

A container 77 extending along the width direction of the traveling body 1 is provided below the rear wheels 9, 9 on both the left and right sides.
Are arranged below the lower end of the line-shaped discharge pipe 76,
The container 77 is configured to receive and collect the residual fertilizer in all the cases 31a. In this case, as shown in FIG. 11, a cutout portion 27a is formed at each rear end of the step portion 27 at each of 76 discharge conduits to eliminate interference between each discharge conduit 76 and the step portion 27, The rear edge of the step portion 27 extends rearward to a position close to the air tank 34 so that the work scaffold is widened. Further, one long container 77 may be disposed between the spokes 9c connecting the rim 9a on the outer periphery of the rear wheel 9 and the hub 9b on the center side (see FIGS. 1 and 10), and the ground 124 and the container may be arranged. The container 77 may be stabilized by interposing the support bases 123a and 123b between the support 77 and the lower surface of the container 77.

As another embodiment of the flexible discharge pipe 76 made of a soft synthetic resin extending substantially downward in a side view of the traveling body 1, as shown in FIGS. 11 and 12, FIG. Step portion 2 long in the width direction of 1
7 is formed so as to cover the upper part of the rear wheel 9 on both the left and right sides,
Of the six discharge conduits 76, the four discharge conduits 76 arranged within the width of the step portion 27 extend substantially directly below in the front view (rear view) of the traveling body 1, while the step portion extends. The discharge conduits 76 ′, 76 ′ arranged outside the left and right side edges of 27 are slightly offset so that their lower ends are located within the width dimension of the step portion 27, and the discharge conduits 76 ′, 76 ′ are formed. ′, The lower end outlet can face above the horizontally long container 77 ′ without generating a portion where the inclination angle of the middle part is extremely loose, so that not only the vertical discharge pipe 76 but also the offset discharge The residual fertilizer can be quickly discharged by its own weight without clogging in the pipe line 76 '.

In still another embodiment, the discharge line 76 disposed above the rear wheels 9, 9 on the left and right sides,
The vehicle body 1 is disposed so as to extend substantially directly downward in both side and rear views, while the right and left rear wheels 9,
The lower ends of the discharge pipes 76 ′, 76 ′ arranged outside the rear wheels 9 may be offset to the inside of the rear wheels 9, 9 on both the left and right sides. Also in this case, the discharge line 76 ',
The lower end outlet can be made to face above the horizontally long container 77 'without generating a portion where the inclination angle of the middle portion of the 76' is extremely loose, and the vertical discharge pipe 76 is offset as well as the vertical discharge pipe 76. The residual fertilizer can be quickly discharged by its own weight without clogging even in the discharge line 76 '.

Then, as described above, the horizontally long container 77
When the residual fertilizer is received at (77 '), the effect of collecting the residual fertilizer at once can be obtained. Further, if the collecting container 77 (77 ') is configured so that its left and right side plate portions 77a and bottom plate 77b can be extended and contracted in a longitudinal direction like a bellows type (see FIG. 13A), After the residual fertilizer is collected, when the container is not used, it can be folded so as to be short (see FIG. 13B) and stored in any one of the cases 31a, without being bulky. This has the effect.

Each upper case 48 is provided with the front and rear horizontal frames 4.
0, 41 bolted and fixed via brackets and the like,
The lower end of the lower case 49 is detachably connected via a rubber fitting cap 79 which fits on the inlet cylinder 78 on the upper surface of the hose joint 33 (see FIG. 9).

The above-mentioned funnel-shaped (lower constricted) lower case 49
Is tilted forward in the same manner as the vertical drive shaft 55, and the axis of the lower cylindrical fertilizer outlet 49b and the hose joint 3
3, the axis of the fertilizer inlet cylinder 78 is inclined forward in the same manner as the forward inclination angle of the vertical drive shaft 55 so that the axis of the fertilizer inlet cylinder 78 is substantially linearly aligned. On the other hand, the air ejection cylinder 3 which is the front end side of the hose joint 33 connected to the connecting pipe 56 connected to the side surface of the air tank 34.
The fertilizer 3b is formed so as to be tapered toward the downstream side of the air conveyance, and the fertilizer fed out at the confluence 33a between the air jetting cylinder 33b and the lower end of the fertilizer inlet cylinder 78 is compressed. It joins with the wind and is sent to the transport cylinder 33c to the supply pipe 36 on the downstream side. In this case, the pressure of the air decreases and the air velocity increases toward the junction 33a due to the tapered shape of the air jetting cylinder 33b, so that the fertilizer that has dropped into the junction 33a is quickly supplied. It can be conveyed with air in the direction of the pipe 36.

On the other hand, the intersection wall between the lower end wall of the fertilizer inlet cylinder 78 and the upper wall of the air ejection cylinder 33b is formed so that the nose 33d becomes obliquely downward toward the downstream side of the air conveyance.
The air (compressed air) sent from the air jetting cylinder 33b blows upward at the junction 33a, and the fertilizer in the fertilizer inlet cylinder 78 does not blow back upward. It is configured as follows.

A lower end of the vertical drive shaft 55 below the support plate 65 is connected with a holder 64 so as not to fall off, and a lower end of the holder 64 projects a spiral axis-shaped fertilizer clogging prevention member 68 downward. The fertilizer clogging prevention member 68
Is arranged so that the lower end faces the junction 33a of the hose joint 33 (see FIG. 9).

As described above, since the fertilizer outlet 49b at the lower end of the lower case 49 and the fertilizer inlet cylindrical portion 78 on the upper surface of the hose joint 33 are substantially straight, even if the fertilizer is inclined, the fertilizer falls smoothly. Further, the fertilizer clogging prevention member 68 can penetrate deeply into the confluence portion 33a, and the fertilizer clogging prevention member 6 according to the rotation of the vertical drive shaft 55.
8 also rotates from the fertilizer outlet 49b to the lower end of the fertilizer inlet cylinder 78, so that the fertilizer adhering to the inner peripheral surface of the lower end of the lower case 49 and the inner peripheral surface of the fertilizer inlet cylinder 78 of the hose joint 33 is prevented from clogging. It can be removed by the member 68, and the clogging of the fertilizer at the junction 33a of the hose joint 33 can be reliably prevented.

Next, a description will be given of a power transmission mechanism for the feeding portions 32 arranged in a horizontal line with reference to FIGS. A chain sprocket 81 fixed to an intermediate portion of the PTO shaft 15 projecting rearward from the rear end of the transmission case 5 and a rear support 86 of the body frame 2
Chain sprocket 82 in bearing case 83 fixed to
The power is transmitted to the chain 84 by being wound around the chain 84, and further transmitted to the transmission shaft 85 at a laterally outer position in the bearing case 83. Driven bevel gear 8 meshing with a bevel gear 87 at the end of the transmission shaft 85
After the power is transmitted to the lower vertical transmission shaft 89 through the transmission shaft 8, the power is transmitted to the upper vertical transmission shaft 91 via a ring cone type continuously variable transmission mechanism 90 provided at the upper end thereof. Ring cone type continuously variable transmission 9
5, an input disk 92 that rotates integrally with the input-side lower vertical transmission shaft 89 and an output-side upper vertical transmission shaft 9 as shown in FIG.
1, an output disc 93 rotatably provided on the first disc 9 and both discs 9
A plurality of planetary cones 94 (a group of the planetary cones 94 are arranged vertically rotatably between
And a non-rotating transmission ring 95 that slidably contacts the conical surface of the planetary cone 94, and these are accommodated in a transmission case 96. On the guide portion at the rear end of the transmission case 96, there is provided a knob 9 for adjusting the number of rotations (and thus the amount of fertilizer fed per unit time)
7, the rear end of a shifter 99 is screwed into the adjusting screw 98, and the shifter 99 is engaged and connected to the speed change ring 95.
The shifter 99 is moved up and down in FIG. 5 in response to the reverse rotation to change the position by changing the position of the conical surface of the planetary cone 94 against which the transmission ring 95 is pressed.

The gear shaft 100, which is separated from the middle portion of the horizontal transmission shaft 58 passing through the plurality of feeding portions 32 and is pin-connected, is disposed in the bearing case 101, and is disposed in the bearing case 101.
The power is transmitted by meshing the bevel gear 102 provided at the upper end with the bevel gear 103 at the upper end of the upper vertical transmission shaft 91 on the output side (see FIG. 6).

The storage section 62 in each feeding section 32 is provided.
The lower surface of the bevel gear 60 is provided with a locking clutch 104 which is vertically slidably fitted on the vertical drive shaft 55 on the lower surface side. The power transmission is interrupted by disengaging from the clutch pawl. A clutch shifter 105 that lowers the stop clutch 104 against the urging spring 106 is connected to a lever 107 outside the upper case 48. And seedling mounting table 1
9, a unit clutch lever 109 (see FIG. 1) for turning on and off the drive of the seedling planting mechanism 24 for each planting line, and a lever at the position of the corresponding planting line. 107 is connected by a wire 108, and when the driving of the planting streak is stopped as in the seedling planting operation at the ridge, the fertilizing work of the streak is also interrupted.

With the above configuration, at the time of seedling planting work, fertilizer is put in the fertilizer storage hopper 31 in advance, and each float 20 of the seedling planting device 14 is put on the mud surface while the traveling machine 1 is advanced in the field. PTO shaft 15
Is driven to transmit power to the seedling planting apparatus 14, and the planting mechanism 24 is driven to split the seedling mat from the lower end of the seedling mounting table 19 and plant it in the field. At this time, the rotational force is transmitted from the PTO shaft 15 to the upper vertical transmission shaft 91 via the ring cone type continuously variable transmission mechanism 90 and the like, and all of the torque is transmitted via the horizontal transmission shaft 58 (six sections).
The vertical drive shaft 55 of the feeding portion 32 rotates at a predetermined speed, so that the granular fertilizer in each case 31 a
From the lower part 49 via the perforated plate 53, and is discharged into the fertilizer inlet cylindrical part 78 which is opened at an intermediate position in the front and rear of the upper surface of the hose joint 33. On the other hand, the compressed air from the blower 44 is
Since the fertilizer released into the fertilizer inlet cylinder 78 is blown rearward in the hose joint 33 via the continuous pipe 56, the fertilizer discharged into the fertilizer inlet cylinder 78 along with the pressurized air is supplied through the supply pipe 36 to the groover 3.
5 is released to the side of the planting strip.

When fertilizer remains in each case 31a of the fertilizer storage hopper 31 after the operation, as shown in FIG. 7, each locking pin 75 is removed and the opening / closing stopper 72 of the discharge guide cylinder 70 is moved forward. When the residual fertilizer discharge port 71 is opened and the residual fertilizer discharge port 71 is opened, the fertilizer accumulated in the case 31a and in the introduction chamber 47 is reduced in its weight by its own weight. It is quickly discharged to a substantially vertical outlet and can be collected in the container 77.

In each of the above embodiments, each case 31a of the fertilizer storage hopper 31 receives a fertilizer sensor 120 for detecting the presence or absence of fertilizer and a mass of fertilizer put in from above, and receives fine particles. A receiving net 121 made of a synthetic resin for powdering is provided. Further, the upper case 48 and the lower case 49 as a feeding case are detachably connected by a clamp fitting 122.

[0048]

As can be understood from the above description, the rice transplanter with the fertilizer application device according to the first aspect of the present invention has a seedling plant device behind a traveling machine of the rice transplanter having a pair of left and right front and rear wheels. A supply pipe for connecting a fertilizer application device disposed in front of the seedling plant device and at a rear portion of the traveling machine body with an air tank for supplying fertilizer conveying air to a front end thereof, and supplying fertilizer to each planting section of the seedling plant device. A hose joint connected to the rear end, a feed case connected to the upper surface of the front and rear halfway portion of the hose joint, and a fertilizer storage hopper connected to the upper side of the feed case, each of the feed cases, At the rear of the traveling body, it is arranged in a line at substantially constant intervals along the width direction of the traveling body, and in each feeding case, a residual fertilizer discharge port for removing residual fertilizer is provided so as to be openable and closable, Fertilizer outlet The discharge line connected, in which in a side view, is stretched substantially directly below direction of the rear of the traveling machine body.

According to this configuration, the total length of each of the drainage pipes is shortened, and a portion having a gentle slope is not formed in the middle of each of the drainage pipes. Therefore, the residual fertilizer that falls by its own weight from the residual fertilizer discharge port quickly moves toward the lower end. It is possible to eliminate the trouble of running down and clogging on the way.

Further, the invention described in claim 2 is the same as the invention described in claim 1.
In the rice transplanter with a fertilizer device according to the above, in a rear view of the traveling body, all the discharge pipelines are extended substantially vertically downward, into a left and right long container disposed near the pair of left and right rear wheels. Therefore, since it is configured to receive the discharged residual fertilizer, a portion with a gentle slope is surely eliminated in the middle of the discharge line, so that the residual fertilizer does not clog and the falling speed can be increased, Quick discharge work becomes possible. Then, since the horizontally long container can receive the residual fertilizer at once, there is an effect that the operation of collecting the residual fertilizer can be promptly performed.

According to a third aspect of the present invention, in the rice transplanter with the fertilizer application device according to the first aspect, the width of the step portion at the rear of the traveling body is set to cover the upper portion of the pair of left and right rear wheels. Outlet cases formed in the left and right longitudinal direction so as to be arranged in the one row, and the discharge conduits provided in the feed case arranged within the width of the step portion are, in a rear view of the traveling body, each of the discharge pipes. The discharge pipe is extended downward substantially vertically so that the lower side of the discharge pipe provided in the feeding case disposed outside the left and right side ends of the step portion is within the width of the step portion. It is configured to be offset and receive the discharged residual fertilizer in a left and right long container disposed below the step portion.

Further, according to a fourth aspect of the present invention, in the rice transplanter with the fertilizer application device according to the first aspect, the width of the step portion at the rear of the traveling machine body is set to cover a space between upper portions of the pair of left and right rear wheels. The left and right longitudinally formed as described above, of the delivery cases arranged in a line, the discharge pipe provided in the delivery case arranged between the upper portions of the pair of left and right rear wheels,
In a rear view of the traveling body, the respective discharge pipelines extend downward substantially vertically, and the lower side of the discharge pipeline provided in a feed case disposed outside the upper part of the pair of left and right rear wheels, The left and right rear wheels are offset so as to be located between the pair of left and right rear wheels, and the left and right long containers disposed below the pair of right and left rear wheels are configured to receive the discharged residual fertilizer.

In any of the above cases, the lower end outlet can face above the horizontally long container without generating a place where the inclined angle of the middle part of the offset discharge line is extremely loose. It is possible to quickly discharge the residual fertilizer by its own weight without clogging not only in the discharge pipe having the shape of the pipe but also in the offset discharge pipe.

According to a fifth aspect of the present invention, in the rice transplanter with the fertilizer according to any one of the second to fourth aspects, a container for collecting the residual fertilizer is configured to be stretchable. Therefore, after the residual fertilizer is collected, the container can be folded and made compact, so that the storage space is not bulky.

[Brief description of the drawings]

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

FIG. 2 is a schematic plan view of the rice transplanter.

FIG. 3 is a schematic plan view of a support frame for supporting the fertilizer application device.

FIG. 4 is a rear view of the arrangement of the fertilizer application device.

FIG. 5 is a side view of a power transmission mechanism for the fertilizer application device.

FIG. 6 is a cross-sectional view of a main part of a rear surface of a power transmission mechanism for the fertilizer application device.

FIG. 7 is a side sectional view of the fertilizer applicator.

FIG. 8 is an exploded perspective view of components of a feeding portion.

FIG. 9 is an enlarged cross-sectional view of a main part of the feeding section.

FIG. 10 is an explanatory view showing a discharge route of the residual fertilizer as viewed from the front of the traveling body.

FIG. 11 is a plan view showing a discharge path of the residual fertilizer.

FIG. 12 shows another embodiment of a residual fertilizer discharge route.
It is explanatory drawing seen from the front of a traveling body.

13 (a) is a partially cutaway perspective view of a bellows type extendable container, and FIG. 13 (b) is a perspective view of the container in a folded state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running body 8 Front wheel 9 Rear wheel 11 Driver seat 14 Seedling plant 19 Seedling stand 27 Step part 30 Fertilizer application device 31 Fertilizer storage hopper 32 Feeding part 33 Hose joint 34 Air tank 36 Supply pipe 47 Introducing chamber 70 Discharge guide cylinder 71 Remaining Fertilizer outlet 72 Shut-off tap 76, 76 'Discharge line 77, 77' Container

Claims (5)

[Claims] 1. A fertilizer application device which is provided behind a traveling machine of a rice transplanter having a pair of left and right front and rear wheels and which is disposed in front of the seedling transplanting device and at a rear portion of the traveling machine. A hose joint connecting an air tank for supplying fertilizer to the front end and a supply pipe for feeding fertilizer for each planting section of the seedling planting apparatus to a rear end thereof, and a feeding joint connected to an upper surface of a front and rear halfway portion of the hose joint. A case and a fertilizer storage hopper connected to the upper side of the feeder case, wherein each of the feeder cases is arranged in a line at a substantially constant interval along a lateral width direction of the running machine at a rear portion of the running machine. ,
In each feeding case, a residual fertilizer discharge port for removing the residual fertilizer is provided so as to be openable and closed, and a discharge pipe connected to each of the residual fertilizer discharge ports is provided, in a side view, almost directly below a rear portion of the traveling machine body. A rice transplanter with a fertilizer device, which is stretched. 2. In a rear view of the traveling machine body, all the discharge pipes extend downward substantially vertically, and the discharge pipes are disposed in left and right long containers disposed near the pair of left and right rear wheels. The rice transplanter with a fertilizer device according to claim 1, wherein the rice transplanter is configured to receive the remaining fertilizer. 3. A step width of a step portion at a rear portion of the traveling body is formed in a left and right length so as to cover an upper portion of the pair of left and right rear wheels. The discharge conduits provided in the feeding case arranged within the width of the section extend substantially vertically downward from the rear of the traveling body, and extend outwardly from both left and right ends of the step portion. The lower side of the discharge line provided in the feeding case arranged at the position is offset so as to be within the lateral width of the step portion, and the discharge is performed by a long container on the left and right disposed below the step portion. 2. A structure for receiving residual fertilizer.
A rice transplanter with a fertilizer application device according to item 1. 4. A horizontal width dimension of a step portion at a rear portion of the traveling body is formed in a right and left longitudinal direction so as to cover an upper portion of the pair of left and right rear wheels, and the left and right of the extending cases arranged in a line are provided. A discharge line provided in a feeding case disposed between upper portions of a pair of rear wheels extends the respective discharge lines substantially vertically downward in a rear view of the traveling body, and the left and right pair of rear wheels are provided. The lower side of the discharge pipe provided in the feeding case disposed outside the upper part is offset so as to be located between the pair of left and right rear wheels, and is long left and right disposed below the pair of left and right rear wheels. The rice transplanter with a fertilizer device according to claim 1, wherein the container is configured to receive the discharged residual fertilizer in a container. 5. The rice transplanter with a fertilizer according to claim 2, wherein a container for collecting the residual fertilizer is configured to be extendable and retractable.