JP2000324918A - Rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fertilizing device, designed to easily withdraw the residual fertilizer without changing the front and back positions of the device as a whole by moving the front end of the hose joint backward. SOLUTION: This fertilizing device 30, positioned at the rear of a running machine body 1 provided with a seedling planter 14 at the rear, is composed of (A) a hose joint 33 connected, at the front end, to an air tank 34 from which fertilizer-carrying air is supplied and, at the back end, to a supply tube which supplies the fertilizer to the seedling planter's seedling planting section, (B) a feed case composed of a lower case 49 and upper case 48 above the lower case 49, provided in communication with the upper side of the hose joint 33 at the middle of the joint length, and (C) a fertilizer-storing hopper 31 connected to the upper side of the feed chamber 47 of the upper case 48 for the feed case, wherein the feed case 49 contains a vertical driving axis 55 for the feeding mechanism with its lower side slanting forward in such a way to be located at the rear of the running machine body, and the front wall 49a of the lower case 49 is slanted forward in such a way to approach the lower side of the vertical driving axis 55 nearer as it goes downward.

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 in which a fertilizer device is provided at a rear portion of a traveling machine body and a seedling plant is disposed behind the fertilizer device.

[0002]

2. Description of the Related Art Conventionally, this type of fertilizer applicator has a horizontally long fertilizer storage hopper capable of replenishing fertilizer from a step behind a driver's seat of a traveling machine body, and a granular fertilizer from the fertilizer storage hopper. And a supply pipe for guiding the fed fertilizer to the side of the planting streak of the seedling plant by pressurized air from a blower.

For example, in Japanese Patent Application Laid-Open Nos. 9-107756 and 10-215622, in a plan view, a horizontally long oblong shape is disposed at the rear of a traveling machine body in a direction perpendicular to a traveling direction of a rice transplanter. At the lower part of the fertilizer storage hopper, a feeding part is continuously provided at each location corresponding to each seedling streak, and a hose joint that is directed forward and backward in the traveling direction is connected to a lower end of the feeding part, At the rear end of the joint, the supply pipe is connected, and the front end of each hose joint is formed at a predetermined interval on the side surface of a round pipe-shaped air tank that is disposed long along the width direction of the traveling body (perpendicular to the traveling direction). And the fertilizer in the form of powder and granules dropped from the feeding section is sent to the supply pipe side together with the compressed air.

[0004] Fertilizer is applied to the soil beside each of the seedling studs simultaneously with the operation of planting seedlings 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.

[0005] For this reason, a contrivance has been made to smoothly discharge the residual fertilizer in the fertilizer storage hopper. In the Japanese Patent Application Laid-Open No. 9-107756, the feeding section includes an upper case having an introduction chamber communicating with a lower end of the fertilizer storage hopper, a lower case detachable from a lower surface of the upper case, and the introduction chamber. A fixed plate fixed to the lower surface of the upper case and a fixing plate fixed to the lower surface of the upper case and rotated adjacent to the lower surface of the fixed plate, and the communication groove is A perforated plate having a plurality of perforated plates vertically penetrated at the same rotational radius position so as to be able to communicate with each other, and disposed adjacent to a lower surface of the perforated plate, and in a phase position below the introduction chamber, A notch portion (small radius portion) having a large radius for closing the lower surface of the perforated plate and opening the lower surface of the perforated plate at a phase position in a pre-rotational direction from the introduction chamber. A bottom plate communicating with the inside of the case, and a rotating plate for driving the perforated plate; Consist drive shaft or the like, the lower end of the lower case, connecting the supply pipe, the hose joint for connecting the communication 設管 to the pipe-like air tank.

[0006] Of the side surfaces of the introduction chamber, an outlet inclined forward and downward is provided on a side surface (front surface in the traveling direction) opposite to the rear step, and the outlet is usually closed with a lid cap. Was configured as follows.

[0007]

However, in this configuration, since the pipe-shaped air tank is connected to the front end (front end) of the hose joint, at the time of taking out the residual fertilizer, it is located at the lower front side of the introduction chamber. Since the space where the air tank is located and the space for disposing the collection box is narrowed, and there is a problem that the removal operation becomes difficult, in the prior art, the fertilizer storage hopper, the feeding section, the blower, and the pressure from the blower The main part of the fertilizer applicator, such as a horizontally long air tank that sends wind to each feeding part, is configured to be able to move up and down integrally, and set to the lowered position during normal work,
At the end of the rice planting operation, in taking out the residual fertilizer at each location corresponding to each seedling streak, holding the main part in a state where it has been appropriately raised to a height, opening each of the takeout ports and removing the residual fertilizer. I was trying to take it out of the collection box.

Therefore, there is a problem that an elevating mechanism for that purpose is required, and the structure of the whole fertilizer is complicated.

[0009] The present invention has been made to solve these problems, and an object of the present invention is to provide a fertilizer that can simplify the structure and make it compact, and can easily remove residual fertilizer. Is what you do.

[0010]

According to a first aspect of the present invention, there is provided a rice transplanter, comprising: Joint connected to the front end of the air tank that supplies water, and a hose connected to the rear end of a supply pipe that feeds fertilizer to the planting part of the seedling planting device, and a feeding joint that is connected to the upper surface of the hose joint before and after halfway. A case and a fertilizer storage hopper connected to an upper side of the feeder case, and a drive shaft of a feeder mechanism is disposed in the feeder case so as to be inclined forward so that a lower portion thereof is behind the traveling body, and The front wall of the case is tilted forward so as to approach the lower part of the drive shaft toward the lower part.

The invention described in claim 2 is the first invention.
In the rice transplanter described in (1), an arrangement space for the air tank is formed between a lower portion of the front wall and a front end of the hose joint.

According to a third aspect of the present invention, in the rice transplanter according to the first or second aspect, a front surface of the delivery case is provided for taking out residual fertilizer outside the air tank. It has a residual fertilizer outlet.

Further, the invention according to claim 4 is the rice transplanter according to claim 3, wherein a discharge guide portion for the residual fertilizer is provided on a lower extension line of the residual fertilizer discharge port.

According to a fifth aspect of the present invention, there is provided the rice transplanter according to any one of the first to fourth aspects, wherein a lower part of the fertilizer storage hopper, which is horizontally long along the width direction of the rice transplanter, is provided. A number of feeding cases corresponding to each seedling planting strip are connected in series, a hose joint extending in the front-rear direction is connected to a lower end of each feeding case, and a front end of each hose joint is connected to the width direction of the traveling machine body. Is connected at predetermined intervals to the side surface of a pipe-shaped air tank that is long along the line, so that the granular fertilizer that has fallen from the feeding section is sent to the supply pipe side together with the compressed air.

[0015]

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 the upper surface of the vehicle body cover 10 which covers the upper surface of the vehicle body frame 2 and the like. An operator sitting on the driver's seat operates a round handle 12 which stands 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 the left and right sides of the rear of each of the transmission cases 17, 18, and 18.
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 can be moved 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, (six) pay-out portions 32 continuously provided for each portion corresponding to each seedling streak, a hose joint 33 connected to a lower end of each of the pay-out portions 32, and a traveling machine 1 The air tank 34 is arranged long along the horizontal width direction (perpendicular to the direction of travel) and is connected to the front end of each of the hose joints 33. The air tank 34 is connected to the rear end of each of the hose joints 33. A hose-shaped supply pipe 36 made of a flexible soft synthetic resin and extending to a groove 35 provided on both left and right sides of the three floats 20 in the device 24.
And so on.

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 allows the worker to walk to replenish the fertilizer storage hopper 31 with fertilizer and to remove residual fertilizer as described later. A workplace (scaffold) that can be used.

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

The fertilizer storage hopper 31 connects the storage cases 31a for each row in a horizontal row, and adjacent storage cases communicate with each other at the recesses 31b at the upper end on both right and left sides. The fertilizer is formed so that the amount of the stored fertilizer can be equalized right and left. The upper end opening of the six storage cases 31a is integrally covered with a horizontally long main cover 45 which can be opened and closed. An auxiliary inlet 45a that opens upward is formed, and an auxiliary lid 46 is detachably provided to the auxiliary inlet 45a (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. Case 31
a when the fertilizer is replenished or when it rains.
When the fertilizer in the fertilizer storage hopper 31 is opened by opening the auxiliary lid 46, it is sufficient to open the auxiliary lid 46 and execute fertilizer addition every one line. In addition, as shown in FIG. 11, an auxiliary inlet 45b communicating with two or three places may be opened on the upper surface of the main lid 45, and an auxiliary lid 46a for closing the part may be detachably provided. .

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 lower constricted (funnel-shaped) 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 fitted non-rotatably in the lower case 49, a vertical drive shaft 55 for rotating and driving the perforated plate 53 and the like are provided. The lower end of the lower case 49 is connected to a hose joint 33 for connecting the supply pipe 36 and a pipe 56 connected to the pipe-shaped air tank 34.

The introduction chamber 47 is provided on the upper surface of the upper case 48 on the side closer to the driving 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. 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.

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 is provided with a spiral fertilizer clogging prevention member 68.
Is protruded downward, and the fertilizer clogging prevention member 68 also rotates according to the rotation of the vertical drive shaft 55, so that the fertilizer adhered to the inner peripheral surface of the lower end of the lower case 49 and the inner peripheral surface of the inlet cylindrical portion 78 of the hose joint 33. Off the hose joint 33
It is configured so as to prevent clogging of feeding of fertilizer into the tank.

Then, the front wall 49a of the lower case 49 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 front 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 which is inserted into 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 the 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 closed.
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). A discharge tube 76 made of a soft synthetic resin as a discharge guide portion is attached to the lower surface side of the discharge guide tube 70 so as to extend downwardly from the residual fertilizer discharge port 71.

As shown in FIGS. 10 and 11, these discharge cylinders 76 are bent in the width direction of the traveling machine body 1 and are collected into collection bags (or fertilizer bags) 77 disposed outside the rear wheels 9 on both left and right sides. It is configured so that residual fertilizer remaining in each of the storage cases 31a can be taken out. The upper case 48 is fixed to the front and rear horizontal frames 40 and 41 by bolts via a bracket or the like, and the lower end of the lower case 49 is fitted with a rubber fitting that fits into the inlet cylinder 78 on the upper surface of the hose joint 33. It is detachably connected via a mating cap 79 (see FIG. 9).

The lower constricted (funnel-shaped) lower case 49
Is tilted forward similarly to the forward tilt of the vertical drive shaft 55,
Extension of lower end of vertical drive shaft 55 (fertilizer clogging prevention member 68)
Of the hose joint 33 so as to linearly face the inlet cylindrical portion 78 of the hose joint 33,
The axis of the inlet cylindrical portion 78 is tilted forward at the same angle as the forward tilt angle of the vertical drive shaft 55.

Next, a description will be given of a power transmission mechanism for the extending 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 divided into a middle part of the lateral 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-described 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 placed 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
Then, it falls by an appropriate amount per unit time below the lower case 49 via the perforated plate 53 and is discharged to the inlet cylinder 78 which is opened in the middle of the upper surface of the hose joint 33 in the front-rear direction. On the other hand, the compressed air from the blower 44 is blown rearward in the hose joint 33 through the air tank 34 and the continuous pipe 56, so that the fertilizer discharged into the inlet cylinder 78 is supplied to the supply pipe 36 together with the compressed air. From the slotter 35 to the side of the planting strip.

After the operation, if fertilizer remains in each case 31a of the fertilizer storage hopper 31, as shown in FIG. 10, a collection bag 77 is placed outside the rear wheels 9, 9 and each locking pin 75 Is removed, and the open / close stopper 72 of the discharge guide cylinder 70 is pulled forward to open the residual fertilizer discharge port 71. The fertilizer accumulated in the case 31a and the introduction chamber 47 is substantially vertical due to its own weight. Quickly discharged to the entrance of
It can be discharged to the collection bag 77.

In the embodiment shown in FIG. 12, the front wall 47a of the introduction chamber 47 communicating with the lower end of each case 31a in the fertilizer storage hopper 31 is inclined forward and obliquely downward.
A residual fertilizer discharge port 110 is formed in the front wall 47a and normally closed with an opening / closing plug 111.

Also in this embodiment, the vertical drive shaft 55 disposed in the feeding case is tilted forward so as to become rearward toward the lower end, and the front wall of the funnel-shaped lower case 49 also becomes rearward as it goes downward. The configuration to lean forward like
Since the configuration is the same as that of the previous embodiment, the other configuration is the same, and the operation and effect are the same, the same components and configurations are denoted by the same reference numerals and detailed description thereof will be omitted.

Also in this embodiment, a funnel-shaped lower case 49 is provided.
Of the front wall and the vertical inclination of the vertical drive shaft 55 therein,
The pipe-shaped air tank 34 serves as a residual fertilizer discharge port 110.
The driver's seat 11 is located further rearward without any interruption.
The collection box 112 can be placed on the rearward step 27 and below the residual fertilizer discharge port 110.

In each of the above embodiments, a fertilizer sensor 120 for detecting the presence or absence of fertilizer and a lump of fertilizer put in from above are received in each case 31a of the fertilizer storage hopper 31, and fine 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.

[0043]

As can be understood from the above description, in the rice transplanter according to the first aspect of the present invention, the fertilizer applying device in which the seedling device is disposed at the rear of the traveling machine body provided at the rear is supplied with a fertilizer conveying wind. A hose joint that connects an air tank to the front end, and a supply pipe that feeds fertilizer to the planting portion of the seedling planting device at the rear end, and a feeding case that is connected to an upper surface of the hose joint before and after halfway. And a fertilizer storage hopper connected to the upper side of the feeding case, and a drive shaft of a feeding mechanism is disposed in the feeding case so as to be inclined forward so that a lower portion thereof is behind the traveling machine body. Since the front wall is tilted forward so as to approach the lower part of the drive shaft toward the lower part, the front-rear position of the fertilizer applicator is not changed as a whole, and therefore, the seedling planting rearward therefrom is not changed. The position of the hose joint, which is the lower part of the fertilizer, can be located at the rear so as not to interfere with the upper end of the fertilizer, ensuring a large space in the front-rear direction between the rear of the traveling machine and the lower part of the fertilizer. can do.

According to a second aspect of the present invention, in the rice transplanter according to the first aspect, a space for arranging the air tank is formed between a lower portion of the front wall and a front end of the hose joint. Therefore, the air tank can be arranged without protruding to the front side near the rear part of the traveling machine body, and the front and rear dimensions of the entire fertilizer applicator can be shortened and compacted.

Further, the invention described in claim 3 is the first invention.
Alternatively, in the rice transplanter according to claim 2, a residual fertilizer discharge port for removing residual fertilizer to the outside is provided on a front surface of the feeding case in front of the air tank. A collection box for collecting the fertilizer taken out from the residual fertilizer discharge port can be arranged by utilizing a large space in the front-rear direction between the rear part of the body and the lower part of the fertilizer application device.

Further, according to a fourth aspect of the present invention, in the rice transplanter according to the third aspect, a discharge guide portion for the residual fertilizer is provided on an extension line below the residual fertilizer discharge port. According to this structure, the fertilizer discharged from the residual fertilizer discharge port can be smoothly discharged downward with almost no resistance to falling, and the operation of removing the residual fertilizer can be quickly discharged.

According to a fifth aspect of the present invention, there is provided the rice transplanter according to any one of the first to fourth aspects, wherein the lower part of the fertilizer storage hopper, which is elongated in the width direction of the rice transplanter, is provided. A number of feeding cases corresponding to each seedling planting strip are connected in series, a hose joint extending in the front-rear direction is connected to a lower end of each feeding case, and a front end of each hose joint is connected to the width direction of the traveling machine body. Is connected at predetermined intervals to the side surface of a pipe-shaped air tank that is long along the line, so that the granular fertilizer that has fallen from the feeding section is sent to the supply pipe side together with the compressed air. Thus, even if the air tank is long in the width direction of the traveling body, the air tank connected to the front end of the hose joint fits in the space below the front inclined front wall of the feeding case, and the front and rear of the fertilizer device. This has the effect of reducing the size.

[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 perspective view showing a fertilizer storage hopper and a discharge path of residual fertilizer.

FIG. 12 is a side sectional view showing another embodiment of the residual fertilizer discharge section.

[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 device 31 Fertilizer storage hopper 32 Feeding part 33 Hose joint 34 Air tank 36 Supply pipe 47 Introducing chamber 48 Upper case 49 Lower case 53 Perforated plate 55 Vertical drive shaft 70 Discharge guide cylinder 71 Residual fertilizer discharge port 72 Opening and closing plug 73 Operating body 76 Discharge cylinder

Claims (5)

[Claims] 1. A fertilizer application device, which is disposed at the rear of a traveling machine body provided with a seedling planting device at the rear, is connected to an air tank for supplying fertilizer conveying air to a front end, and supplies fertilizer to a planting section of the seedling planting device. A feed joint connected to the rear end of the supply pipe, a feed case connected to the upper surface of the front and rear halfway of the hose joint, and a fertilizer storage hopper connected to the upper side of the feed case; The drive shaft of the feeding mechanism is arranged to be inclined forward so that the lower portion thereof is behind the traveling body, and the front wall of the feeding case is tilted forward so as to approach the lower portion of the drive shaft as going downward. A rice transplanter characterized by: 2. The rice transplanter according to claim 1, wherein a space for arranging the air tank is formed between a lower portion of the front wall and a front end of the hose joint. 3. The residual fertilizer discharge port for taking out residual fertilizer to the outside in front of the air tank is provided on the front side of the feeding case. Rice transplanter. 4. On a lower extension line of the residual fertilizer discharge port,
The rice transplanter according to claim 3, further comprising a discharge guide for the residual fertilizer. 5. A lower part of the fertilizer storage hopper, which has a horizontally long shape along the width direction of the rice transplanter, is provided with a plurality of feeding cases corresponding to each seedling attachment strip, and a lower end of each feeding case is provided at a lower end of each of the feeding cases. The hose joints extending in the front-rear direction are connected to each other, and the front ends of the hose joints are connected at predetermined intervals to the side surfaces of a pipe-shaped air tank which is long along the lateral width direction of the traveling machine body, and fall from the feeding portion. The rice transplanter according to any one of claims 1 to 4, wherein the powdered granular fertilizer is sent to the supply pipe side together with the compressed air.