JP2009195188A - Fertilizing unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fertilizing unit attachable to a main machine of a rice transplanter and capable of facilitating the discharging operation of residual fertilizer or the maintenance operation of the fertilizing apparatus. <P>SOLUTION: An upper assembly 114 including fertilizing cases 135, delivery mechanisms 136 and hoppers 131 installed in a plurality of fertilizing apparatuses 130 is integrally rotated around a rotation fulcrum 116 along the longitudinal direction of the main machine 1 of the rice transplanter on the outer side in the width direction of the outermost fertilizing apparatuses 130 located at the outermost side relative to the width direction of the main machine 1 of the rice transplanter. Thereby, the upper assembly 114 is separated from a lower assembly 115 containing a connection pipe 133. When the upper assembly 114 is separated from the lower assembly 115, a shutter member 210 is positioned above an upper opening 133d of the connection pipe 133 of the lower assembly 115 to cover the upper part of the upper opening 133d of the connection pipe 133. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rice transplanter, and more particularly, to a fertilizer unit applied to a rice transplanter.

2. Description of the Related Art A rice transplanter in which a fertilizer and a fertilizer blower are attached to a rice transplanter and a fertilizer fed from the fertilizer is supplied to a place to be fertilized by a fertilizer blower is conventionally known.
Specifically, the fertilizer application apparatus includes a fertilizer hopper that stores fertilizer, a fertilizer feeding body that communicates with a lower end opening of the fertilizer hopper, and a fertilization hose that communicates with the fertilizer feeding body.
The fertilizer blower is fluidly connected to the fertilizer application device so that the fertilizer fed from the fertilizer feeding body can be pumped to a place to be fertilized via the fertilizer hose.

By the way, the fertilizer application apparatus normally uses the space between the driver's seat and the seedling stage, and is arranged along the vehicle width direction by the number corresponding to the number of rice transplanters (the number of seedling stages). It is installed side by side.
That is, four fertilizers are juxtaposed in the vehicle width direction in the four-row planting rice transplanter, and eight fertilizers are juxtaposed in the vehicle width direction in the eight-row planting rice transplanter.
Therefore, in the fertilizer application device located at the center in the vehicle width direction, it is difficult to discharge residual fertilizer in the fertilizer hopper and to perform maintenance work.

On the other hand, a configuration in which a residual fertilizer outlet is provided in each of the fertilizer supply bodies of the fertilizer application apparatus, and a discharge hose is connected to the residual fertilizer outlet to discharge the residual fertilizer in the fertilizer hopper is known. (For example, refer to Patent Document 1).
However, in this conventional configuration, the residual fertilizer outlet and the fertilizer hose are provided because the residual fertilizer outlet is provided on the side of the fertilizer supply body avoiding the fertilizer hose at the lowermost end of the fertilizer supply body. There exists a problem that the residual fertilizer cannot be removed between the connection parts (generally the place where the eye plate body for sending a certain amount of fertilizer to the fertilizer hose side) is provided.
Moreover, there is also a problem that it takes time and effort to attach a discharge hose for each of a plurality of fertilizer applicators. In particular, in a fertilizer applicator located at the center in the vehicle width direction, it is difficult and time-consuming to attach the discharge hose. Moreover, when the discharge hose is extended below the fuselage and outward of the rear wheel, it passes between the rear wheel spokes, so that mud adhering to the rear wheel spokes adheres to the discharge hose. In other words, there may be a time and effort to clean this.
Japanese Patent Laid-Open No. 2003-61420

  The present invention has been made in view of the prior art, and is a fertilization unit that can be attached to a rice transplanter main machine, and can facilitate the discharge work and maintenance work of residual fertilizer in a fertilizer application apparatus. The purpose is to provide

  The fertilization unit according to the present invention is made to achieve the above object, and is located between the fertilization case having an upper opening connected to the lower opening of the hopper and the upper opening and the lower opening of the fertilization case. A plurality of fertilizers having a feeding mechanism housed in the fertilizer case, a fertilizer frame that supports the plurality of fertilizers along the width direction of the rice transplanter main machine, and rice transplanting in the fertilizer frame A fertilizer blower connected to the first side in the width direction of the machine main unit, and an air pipe arranged along the width direction of the rice transplanter main unit, and an opening for receiving the conveyance air from the fertilizer blower at one end side And the fertilizer application apparatus further includes an upper opening connected to the lower opening of the fertilization case, and an air receiving opening communicated with the air pipe. A fertilizer unit comprising a connection pipe having a fertilizer discharge opening for discharging fertilizer supplied through the upper opening using a conveying wind supplied through the air receiving opening, The fertilization case and the upper assembly including the feeding mechanism and the lower assembly including the connection pipe are separable, and the fertilization frame includes a fixed frame fixed to the rice transplanter main machine, It is a rotation side frame that supports the upper assembly, and extends along the front-rear direction of the rice transplanter machine at the outer side in the width direction from the outermost fertilizer applied to the outermost side in the width direction of the rice transplanter machine. A connection state in which the lower opening of the fertilization case is fluidly connected to the upper opening of the connection pipe and connected to the fixed side frame so as to be rotatable around the rotation fulcrum. A rotation-side frame capable of taking a separated state in which a lower opening is separated from the upper opening of the connection pipe, and the fertilizer application unit further includes an open position that opens the upper opening of the connection pipe, and the A shutter member capable of taking a cover position covering the upper part of the upper opening of the connecting pipe is provided.

According to the fertilizer unit with the above configuration attached to the rice transplanter machine, the fertilizer is provided in the fertilizer case by a hopper placed on the upper surface of each fertilizer case of the fertilizer device. The supplied feeding mechanism is supplied, and by the feeding mechanism, a fixed amount of fertilizer is pumped and fertilization work is performed.
In addition, a fertilizer blower is connected to the first side in the width direction of the rice transplanter machine in the fertilizer frame fixed to the rice transplanter machine, and the conveying wind from the fertilizer blower is distributed along the width direction of the rice transplanter machine. It is sent to the installed air piping. The upper opening of the connection pipe is connected to the lower opening of the fertilizer application case of the fertilizer application device, and is supplied from the upper opening of the connection pipe by feeding the conveying air into the connection pipe from the air receiving opening communicating with the air pipe. The fertilizer is discharged from the fertilizer discharge opening.

Here, with respect to the stationary frame fixed to the rice transplanter main machine with respect to the rotation side frame of the fertilizer application frame, the width direction is more than the outermost fertilizer applied to the outermost side in the width direction of the rice transplanter main machine. The upper assembly including the fertilizer case and the feeding mechanism provided in the plurality of fertilizers is configured to rotate the connection pipe by rotating around the rotation fulcrum along the front-rear direction of the rice transplanter main machine. Separated from containing lower assembly.
When the upper assembly and the lower assembly are separated, the shutter member is positioned above the upper opening of the connection pipe in the lower assembly, so that the upper opening of the connection pipe is covered.

In this way, a plurality of fertilizer cases and feeding mechanisms are provided by rotating the rotation-side frame around the rotation fulcrum located outside the fertilizer that is located on the outermost side in the width direction of the rice transplanter. Maintenance work and residual fertilizer discharge work can be carried out after the upper assembly is made to be in a separated state in which the lower assembly including the connecting pipe is integrally inclined around the rotation fulcrum. Therefore, the remaining fertilizer in the fertilizer can be removed to the maximum extent including the fertilizer remaining in the vicinity of the feeding mechanism. Furthermore, since it is not necessary to attach a discharge hose during the discharge of residual fertilizer, the discharge of residual fertilizer can be performed easily and quickly.
Furthermore, since the shutter member which can take the open position which opens the upper direction of the upper opening of the connection pipe and the cover position which covers the upper opening of the connection pipe is provided, the upper side assembly and the lower side assembly are provided. In the connected state, the lower opening of the fertilizing case is allowed to be connected to the upper opening of the connection pipe by positioning the shutter member in the open position, and the upper assembly and the lower assembly are When the shutter member is in the separated state, foreign substances such as rainwater and dust can be prevented from entering the upper opening of the connection pipe by positioning the shutter member at the cover position.

  Preferably, the shutter member is configured to take the open position or the cover position in conjunction with a rotation operation around the rotation fulcrum of the rotation side frame.

In this case, the upper assembly is automatically separated from the lower assembly by the pivoting operation around the pivotal fulcrum of the pivoting frame, so that the shutter member automatically opens the upper opening of the connecting pipe in the lower assembly. Is located at the upper cover position.
Therefore, the shutter member can be positioned at the open position or the cover position by one action of rotating the rotation side frame around the rotation fulcrum.

  Preferably, the shutter member has an inclined upper surface.

In this case, since the upper surface of the shutter member is inclined, even if foreign matter such as rainwater or dust adheres to the upper surface of the shutter member, the shutter member falls downward due to the inclination.
Accordingly, it is possible to prevent foreign matters such as rainwater and dust from accumulating on the upper surface of the shutter member, and thereby, from the upper surface of the shutter member to the upper side of the connecting pipe during the rotation operation of the rotating side frame. It is possible to effectively prevent the foreign matter from entering the opening.

According to the fertilizer application unit according to the present invention, the rotation-side frame is rotated around the rotation fulcrum located outside the fertilizer that is located on the outermost side in the width direction of the rice transplanter machine. The maintenance work and the residual fertilizer discharge work may be performed after the plurality of upper assemblies including the feeding mechanism are integrally separated with respect to the lower assembly including the connection pipe and inclined about the rotation fulcrum. it can. Therefore, the remaining fertilizer in the fertilizer can be removed to the maximum extent including the fertilizer remaining in the vicinity of the feeding mechanism. Furthermore, since it is not necessary to attach a discharge hose during the discharge of residual fertilizer, the discharge of residual fertilizer can be performed easily and quickly.
Furthermore, since the shutter member which can take the open position which opens the upper direction of the upper opening of the connection pipe and the cover position which covers the upper opening of the connection pipe is provided, the upper side assembly and the lower side assembly are provided. In the connected state, the lower opening of the fertilizing case is allowed to be connected to the upper opening of the connection pipe by positioning the shutter member in the open position, and the upper assembly and the lower assembly are When the shutter member is in the separated state, foreign substances such as rainwater and dust can be prevented from entering the upper opening of the connection pipe by positioning the shutter member at the cover position.

Embodiments according to the present invention will be described below with reference to the accompanying drawings.
In FIG. 1, the side view of the rice transplanter A to which the fertilization unit 100 which concerns on 1st Embodiment of this invention was applied is shown.

First, the whole structure of the rice transplanter A in this embodiment is demonstrated.
As shown in FIG. 1, the rice transplanter A in the present embodiment is located in front of the rice transplanter main machine 1, a planting device 3 attached to the rear of the rice transplanter main machine 1, and the planting device 3. As shown, a fertilizer application unit 100 attached to the rear portion of the rice transplanter main machine 1 is provided.

  The rice transplanter machine 1 is disposed behind the drive source 6 in a state of being operatively connected to the vehicle body frame 5, a drive source 6 mounted on the front portion of the vehicle body frame 5, and the drive source 6. Mission case 8, a pair of front axle cases 9 disposed on both sides of the mission case 8 in the vehicle width direction, and a pair of paddy fields respectively supported by the pair of front axle cases 9 via a front axle 10A A traveling front wheel 10, a rear axle case 12 connected to the rear portion of the transmission case 8 via a connecting frame 11, and a pair of paddy fields traveling supported on both sides in the vehicle width direction of the rear axle case 12 via a rear axle 13A The rear wheel 13 is provided.

  Further, the rice transplanter machine 1 includes a bonnet 7 that covers the drive source 6, a vehicle body cover 14 that is stretched on the vehicle body frame 5 so as to cover the transmission case 8, and a vehicle body cover 14 that is provided on the vehicle body cover 14. A driver's seat 21, a steering handle 20 disposed in front of the driver's seat 21 and at the rear of the bonnet 7, and spare seedling platforms 50 provided on both sides of the bonnet 7 in the vehicle width direction. ing.

The vehicle body cover 14 includes an auxiliary step 15 disposed on both sides of the bonnet 7 in the vehicle width direction, a main step 16 disposed behind the bonnet 7, and a driver seat step disposed behind the main step 16. 17 and a rear step 18 disposed behind the driver's seat step 17.
The driver's seat step 17 and the rear step 18 are provided via a rear frame 25 erected on the vehicle body frame 5.

  The planting device 3 includes a planting case 38, a seedling stage 33, and a seedling feed belt mounted on the seedling stage so that the seedling mat placed on the seedling stage 33 can be conveyed downward. (Not shown), a rotary case 31 rotatably supported by the planting case 38, and a claw case 32 supported by the rotary case 31 and having a planting claw. ing.

In the present embodiment, the planting device 3 is for four strips in which four strip seedling platforms 33 on which four seedling mats can be placed are arranged side by side in the vehicle width direction. .
A pair of the rotary cases 31 are provided on both sides of the planting case 38 in the vehicle width direction.
In other words, in the present embodiment, the planting device 3 has two planting cases 38 for two strips and four rotary cases 31.

In FIG. 2, the schematic left view containing the partial cross section of fertilizer unit 100 vicinity of this embodiment is shown. Moreover, in FIG.3 and FIG.4, the back perspective view and front view of the fertilization unit 100 vicinity of this embodiment are shown.
As shown in FIGS. 1 and 2, the planting device 3 is a planting device provided in the rice transplanter main machine 1 in a state in which it is operatively connected to a drive output shaft 110 that transmits rotational power from the drive source 6. A planting drive case 26 having a planting input shaft (not shown) operatively connected to the attached PTO shaft 111, and a horizontal pipe case coupled to the planting drive case 26 so as to extend in the vehicle width direction. A horizontal pipe case (not shown) in which a planting drive shaft operatively connected to the planting input shaft is inserted; a pair of left and right side frames 34 erected on the horizontal pipe case; A rolling frame (not shown) extending in the vehicle width direction so as to connect the upper portions of the pair of side frames 34 is further provided.

  Further, the planting device 3 includes a center float 35 and a side float 36 disposed below the planting case 38.

The planting apparatus 3 having such a configuration is connected to the rice transplanter main machine 1 so as to be movable up and down via a lifting link mechanism 2 inserted between the body frame 5 and the planting drive case 26. Has been.
Specifically, the lifting link mechanism 2 includes a lifting link 27 extending between the machine body frame 5 and the planting drive case 26, and a lifting hydraulic pressure interposed between the lifting link 27 and the connecting frame 11. And a cylinder 28.
With such a configuration, the planting device 3 is moved up and down with respect to the rice transplanter main machine 1 by moving the lifting hydraulic cylinder 28 forward and backward.

  As shown in FIGS. 1 to 4, the fertilization unit 100 of the present embodiment is supported by the body frame 5 via a fertilization frame 39 so as to be positioned between the driver's seat 21 and the seedling stage 33. Has been. The fertilization frame 39 supports the plurality of fertilizers 130 along the width direction of the rice transplanter main machine 1.

  The fertilizer unit 100 includes a fertilizer 130 supported by the fertilizer frame 39 and a turbo blower fertilizer blower 140 that pumps fertilizer fed from the fertilizer 130.

The fertilizer application unit 100 includes a plurality of the fertilizers 130 corresponding to the number of planting strips of the rice transplanter A, so that the fertilizer fed from the fertilizers 130 can be pumped by the single fertilizer blower 140. It is configured.
Specifically, the fertilizer application unit 100 includes the air pipe 150 fixed to the fertilizer application frame 39 along the vehicle width direction in addition to the above configuration. The air pipe 150 is fluidly connected to the plurality of fertilizer applicators 130, and has an opening 112 that receives the conveyance air from the fertilizer blower 140 on one end side that is the first side (left side) in the width direction of the rice transplanter main machine 1. And the other end side which is the second side (right side) in the width direction of the rice transplanter main machine 1 is closed, and the fertilizer blower 140 is fed out from the plurality of fertilizer applicators 130 via the air pipe 150. The fertilizer is pumped.
In the present embodiment, the rice transplanter is a four-row type. Therefore, the fertilizer application unit 100 includes four fertilizer application devices 130.

  The plurality of fertilizer applicators 130 are configured to be able to supply fertilizer to be accommodated, and are arranged in parallel along the vehicle width direction behind the driver seat 21 as shown in FIGS. 1 and 2. Both have the same configuration.

In FIG. 5, the principal part disassembled perspective view of the said fertilizer application apparatus 130 is shown.
The fertilizer applying device 130 in this embodiment includes a hopper 131 having an upper opening 131a and a lower opening 131b at the upper and lower ends, a fertilization case 135 connected to the lower opening 131b of the hopper 131, and the fertilization case 135. The housed feeding mechanism 136, the cleaner mechanism 138 for removing the fertilizer attached to the inner peripheral surface of the lower case 45 described later in the fertilizing case 135, the air receiving opening 133a at one end and the fertilizer discharging opening 133b at the other end. An intermediate region 133c between the connecting pipe 133 connected to the lower end of the fertilizing case 135 below the feeding mechanism 136 (and further below the cleaner mechanism 138), and a base end portion of the fertilizer release of the connecting pipe 133 The flow communicated with the other end portion 133b acting as an outlet and corresponding to the tip portion And a fertilization hose 134 located on the side of 35 and 36.

  The hopper 131 accommodates fertilizer, and a lower opening 131b is connected to an upper end 135a of the fertilizing case 135 through a joining member (not shown) so as to be able to contact and separate. The upper ends of the plurality of hoppers 131 can be closed by a lid member 113 that integrally covers the upper opening 131 a of the hopper 131. The lid member 113 may be provided for each hopper 131.

  The fertilizer case 135 is connected to the lower opening 131b of the hopper 131 so that the fertilizer receiving port 44 (see FIG. 5) through which the powdered fertilizer in the hopper 131 can be introduced and the fertilizer supply communicated with the fertilizer receiving port 44 It has a mouth 41 (lower opening of the fertilizer case 135), and has an upper case 43 having the fertilizer receiving port 44, and a funnel-like (lower constricted) lower case 45 having the fertilizer supply port 41. ing. The fertilizer supply port 41, which is a lower opening of the fertilization case 135, is positioned below the feeding mechanism 135. The upper case 43 and the lower case 45 are detachably connected via a packing (not shown). In the present embodiment, the hopper 131, the upper case 43, and the lower case 45 are formed of a permeable member.

  According to the fertilization unit 100 having the above-described configuration attached to the rice transplanter main machine 1, the fertilizer is provided with a plurality of fertilizers 130, and is fertilized by a hopper 131 placed on the upper surface of each fertilizer case 135 of the fertilizer applicator 130. Is supplied to the feeding mechanism 136 accommodated in the fertilization case 135, and the feeding mechanism 136 pumps a fixed amount of fertilizer to perform fertilization work.

  The conveying wind from the fertilizer blower 140 connected to the first side in the width direction of the rice transplanter main machine 1 in the fertilizer frame 39 fixed to the rice transplanter main machine 1 is along the width direction of the rice transplanter main machine 1. It is sent to the arranged air pipe 150. An upper opening 133 d of the connection pipe 133 is connected to a lower opening (fertilizer supply port 41) of the fertilizer case 135 of the fertilizer application device 130, and the conveying air is passed through the air receiving opening 133 a communicating with the air pipe 150 into the connection pipe 133. The fertilizer supplied from the fertilizer supply port 41 of the connection pipe 133 is discharged from the fertilizer discharge opening 133b.

In the fertilizer application unit 100 in this embodiment, the fertilizer application device 130 is separable into an upper assembly 114 including the feeding mechanism 136 and the cleaner mechanism 138 and a lower assembly 115 including the connection pipe 133.
The fertilization frame 39 includes a fixed frame 390 fixed to the rice transplanter machine 1 and a rotating frame 117 that supports the plurality of upper assemblies 114. The rotation-side frame 117 is rotated along the front-rear direction of the rice transplanter machine 1 at the outer side in the width direction from the outermost fertilizer 130 located on the outermost side in the width direction of the rice transplanter machine 1. The lower opening (that is, the fertilizer supply port 41) of the fertilizer application case 135 is fluidly connected to an upper opening 133d (to be described later) of the connection pipe 133. The connection state to be made and the separation state in which the fertilizer supply port 41 of the fertilization case 135 is separated from the upper opening 133d of the connection pipe 133 can be taken.

  In the present embodiment, the four upper assemblies 114 include two hoppers 131 on the first side (left side) in the width direction of the rice transplanter machine 1 with the central portion in the width direction of the rice transplanter machine 1 as a boundary. The left upper assembly group 118L and the two hoppers 131 on the second side (right side) in the width direction of the rice transplanter machine 1 are integrated by being fixed integrally in a state of being connected in the width direction of the machine 1. Are integrally fixed in a state of being connected in the width direction of the rice transplanter main machine 1, thereby forming an integrated upper right assembly group 118R. The plurality of lower assemblies 115 are integrally fixed to the fixed frame 390 to form an integrated lower assembly group 119.

The upper left side assembly group 118L is arranged in the front-rear direction of the rice transplanter machine 1 in the width direction outer side (left side) than the fertilizer 130 positioned on the first outermost side (left end) in the width direction of the rice transplanter machine 1. The left upper assembly group 118R is positioned on the second outermost side (right end) in the width direction of the rice transplanter machine 1. The fertilizer 130 and the width direction outer side (right side) can be rotated integrally around a right rotation fulcrum 116R along the front-rear direction of the rice transplanter machine 1.
In the present embodiment, the upper left assembly group 118L is rotatable about the left rotation fulcrum 116L with the fertilizer blower 140 removed, but instead, the fertilizer blower 140 is provided. May be configured to be rotatable about the left rotation fulcrum 116L in a state of being rotated about a rotation axis along the vertical direction and separated from the air pipe 150.

  FIG. 6 shows a front perspective view of the vicinity of the fertilizer unit 100 when the upper assembly 114 of the fertilizer unit 100 of the present embodiment is separated. FIG. 6 shows a state in which the upper right assembly group 118R is rotated from the horizontal position to the vertical position. In FIG. 6, the lid member 113 above the hopper 131 is omitted.

In the present embodiment, the rotation fulcrums 116L and 116R along the front-rear direction of the rice transplanter machine 1 are supported by the fixed frame 390, and the width of the hopper 131 in the fertilizer 130 at both ends is increased. Are provided with a pair of front and rear rotation-side frames 117 whose front ends are respectively pivotally supported at both ends of the rotation fulcrums 116L and 116R. The rotation-side frame 117 includes the plurality of rotation-side frames 117. In a state where the hopper 131 is connected, it is possible to rotate integrally around the rotation fulcrums 116L and 116R.
In the present embodiment, the upper assembly group 114 includes the upper case 43 and the feeding mechanism 136, and the lower assembly 115 includes the lower case 45.

In the present embodiment, there are provided locking mechanisms 122L and 122R for locking the upper assembly groups 118L and 118R around the rotation fulcrums 116L and 116R at a predetermined angle.
Specifically, as shown in FIGS. 4 and 6, the locking mechanisms 122L and 122R are pivotally supported on the front side surface of the predetermined hopper 131 (the hopper 131 located at both ends in the width direction in this embodiment). And a plurality of locking hooks 122b provided at predetermined positions along the width direction on the stationary frame 390 disposed along the width direction of the rice transplanter machine 1. The locking rod 122a is selectively engageable with the plurality of locking hooks 122b.

In this case, the upper assembly groups 118L and 118R are locked at a predetermined angle around the rotation fulcrums 116L and 116R by the locking mechanisms 122L and 122R. The locking angle can be changed by changing the locking hook 122b engaged with the locking rod 122a.
Therefore, when discharging the residual fertilizer, it is not necessary for the worker to hold the upper assembly groups 118L and 118R, and the labor of the worker can be further reduced.

  In this embodiment, the fertilizer accommodation space of the hopper 131 in one fertilizer 130 and the fertilizer accommodation space of the hopper in another fertilizer adjacent to the fertilizer can be distributed as shown in FIG. The hopper 131 in the fertilizer application device 130 at both ends is provided with a fertilizer discharge port 124 that is opened or closed by a cap 123 (see FIG. 2) on the side surface close to each of the rotation fulcrums 116L and 116R. Yes.

More specifically, as shown in FIGS. 2 and 6, the hopper 131 includes an upper region 131 c in which the upper opening 131 a is closed by a lid member 113, and extends downward from the upper region 131 c, at a lower end portion. The lower region 131d is provided with a lower opening 131b, and has a lower region 131d that is reduced in diameter as it goes downward. In the upper region 131c, the fertilizer housing space of another adjacent hopper 131 is mutually connected A notch 131e through which fertilizer can be distributed is provided.
Further, the fertilizer discharge port 124 is provided in the upper region 131c, and has a fertilizer discharge nozzle 125 facing outward as shown in FIG. Is detachably attached (see FIG. 2).

  As described above, since the fertilizer storage space of the hopper 131 in one fertilizer 130 and the fertilizer storage space of the hopper 131 in another adjacent fertilizer 130 can be distributed, the plurality of upper sides When the assembly 114 (upper assembly group 118L, 118R) is integrally rotated about the rotation fulcrums 116L, 116R, the hopper 131 in the fertilizer 130 at the right end located at the lowest position in the rotation is attached to the hopper 131. The residual fertilizer flows sequentially from the hoppers of the other fertilizer application devices 130. At the time of fertilization work, the fertilizer discharge port 124 closed by the cap 123 is opened on the side surface (right side surface) of the fertilizer application device 130 at both ends close to the rotation fulcrums 116L and 116R of the hopper 131. The residual fertilizer that has flowed into the fertilizer application device 130 at the right end is discharged from the fertilizer discharge port 124.

As described above, the upper assembly 114 in which the fertilizer remains in the fertilizer 130 is separated from the lower assembly 115, and along the front-rear direction of the rice transplanter main machine 1 at the outer side in the width direction from the outermost fertilizer 130. In the separated state that is integrally rotated around the rotation fulcrums 116L and 116R, the plurality of upper assemblies 114 (upper assembly groups 118L and 118R) are integrally inclined to remove residual fertilizers from the hopper 131. Since it can be discharged from the side, the remaining fertilizer in the fertilizer application device 130 including the fertilizer remaining in the vicinity of the feeding mechanism 136 can be removed to the maximum extent. In addition, since it is not necessary to attach a discharge hose during the discharge of residual fertilizer, the discharge of residual fertilizer can be performed easily and in a short time.
Further, by providing the fertilizer discharge port 124 in the hopper 131 on the side where the rotation fulcrums 116L and 116R are provided in the vehicle width direction, the residual fertilizer in the plurality of fertilizer applicators 130 can be discharged collectively from the fertilizer discharge port 124. It is possible to discharge the residual fertilizer more easily and in a short time, and the configuration of the fertilizer unit 100 can be configured more easily.

  In the configuration of the present embodiment, the upper assembly groups 118L and 118R are rotated around the rotation fulcrums 116L and 116R, so that the conveying air is not introduced into the hopper 131 from the fertilizer blower 140 or the like. The residual fertilizer staying in the feeding mechanism 136 can be effectively discharged, but by introducing the conveying air from the fertilizer blower 140 into the hopper 131 through a connection pipe (not shown). It is also possible to more effectively discharge residual fertilizer.

  Here, each structure of the said fertilizer application apparatus 100 is demonstrated more concretely. In the upper part of the upper case 43 of the fertilization case 135, a storage part 48 is provided adjacent to the rear of the fertilizer receiving port 44, and a horizontal bearing part 46 through which a horizontal transmission shaft 160 described later passes, And a longitudinal bearing portion 47 through which a feed drive shaft 55 described later passes. The storage portion 48 is internally provided in a state in which a bevel gear 91 attached to the lateral transmission shaft 160 and a bevel gear 75 attached to the upper end portion of the feeding drive shaft 55 are engaged with each other, and the upper opening portion Is sealed with a lid 49 (FIG. 2) made of synthetic resin having elasticity such as rubber.

As shown in FIG. 5, the feed mechanism 136 is operatively connected to the drive source 6, and a feed drive shaft 55 that is driven to rotate about a rotation axis substantially along the vertical direction, and the feed drive shaft 55 are inserted. An upper fixed disc body 51 having a central hole 51a and fixed to the upper case 43 so as to separate the inner space of the upper case 43 in a state in which the inner space of the upper case 43 cannot be rotated around the rotation axis. , And an upper fixed disk body 51 in which an upper slit 54 is vertically penetrated over a predetermined range in the circumferential direction (here, substantially a half circumference), and the rotational axis at a position below the upper fixed disk body 51. A lower fixed disk body 58 fixed to the upper case 43 so as to separate the internal space of the upper case 43 in a state in which the inner case cannot be rotated. The lower fixed disk body 58 has a central hole 58a through which 5 is inserted, and a lower slit 59 that is vertically penetrated at a position different from the upper slit 54 in the circumferential direction with respect to the rotation axis. And a countersink body 56 inserted between the upper and lower fixed disk bodies 51 and 58 in a state of being rotated around the rotation axis by the feeding drive shaft 55, and having a through hole 57 penetrating vertically. The formed eye plate body 56 is provided.
A plurality of passage holes 57 of the eye plate body 56 are provided over the entire circumference along the circumferential direction at a position corresponding to the same rotational radius position as the upper slit 54 extending in the circumferential direction of the upper fixed disk body 51. Yes.

  The feed-out drive shaft 55 has a penetrating portion formed in a rectangular shape in cross section passing through central holes 51 a, 56 a, 58 a in the upper fixed disc body 51, the eye plate 56 and the lower fixed disc body 58. Of these, only the central hole 56a having a rectangular shape in plan view formed in the eye plate body 56 is engaged. As a result, the feeding drive shaft 55 and the eye plate body 56 can rotate integrally with the rotation of the feeding drive shaft 55. Thus, by rotating the eye plate body 56, the fertilizer receiving port 44 of the upper case 43 arrives at the passage hole 57 of the eye plate body 56 through the upper slit 54 of the upper fixed disk body 51. The incoming fertilizer can be moved to the lower slit 59 of the lower fixed disk body 58 and dropped into the lower case 45 in a fixed amount.

  The cleaner mechanism 138 is a cleaner support member 66 fixed to the lower case 45. The cleaner mechanism 138 is provided with a central hole 66a extending vertically on the same axis as the rotation axis, and radially outward of the central hole 66a. A cleaner support member 66 provided with a support surface 66b facing upward, a shaft portion 64a inserted through the central hole 66a so as to be rotatable about a rotation axis, and radially outward from the shaft portion 64a on the upper end side of the shaft portion 64a. A cleaner driving shaft 64 having a flange portion 65 extending in the direction and having an upper end portion detachably connected to a lower end engaging portion 55a at a lower end portion of the feeding drive shaft 55 and being relatively non-rotatable about a rotation axis. A coil spring 67 locked to the support surface 66b and having an upper end locked to the flange 65, and a cleaner member connected to the lower end of the cleaner drive shaft 64 And a 9.

  More specifically, the cleaner support member 66 is attached to two fixed portions 45 a provided so as to face each other inside the upper end portion of the lower case 45. The cleaner member 69 has a generally bowl-like shape that slides on the inner peripheral surface of the lower case 45 as the cleaner drive shaft 64 rotates about its axis. The cleaner drive shaft 64 has an engaged portion 64 a that engages with a lower end engaging portion 55 a of the feed drive shaft 55 at the upper end portion, and is mounted between the fixed portions 45 a in the lower case 45. The cleaner support member 66 is passed through. The cleaner drive shaft 64 is provided with the flange member 65 near the upper end. Further, the cleaner drive shaft 64 is provided with the coil spring 67 that fits on the outer periphery of the cleaner drive shaft 64 between the flange member 65 and the cleaner support member 66, and is attached to the lower case 45. The upper end engaged portion 64 a is engaged with the lower end of the feeding drive shaft 55 by being pressed against the feeding drive shaft 55 through the flange member 65 by the elastic biasing force of the coil spring 67 holding the lower end portion. It is engaged with the portion 55 a and rotates together with the feeding drive shaft 55.

  Further, as described above, the substantially bowl-shaped cleaner member 69 is attached to the lower end portion of the cleaner drive shaft 64. Accordingly, the cleaner member 69 rotates so as to substantially follow the inner peripheral surface of the lower case 45 in conjunction with the rotation of the cleaner drive shaft 64 due to the rotation of the feeding drive shaft 55. The fertilizer adhering to the peripheral surface can be removed, and therefore, the fertilizer clogging can be surely prevented.

  In the present embodiment, the upper case 43, the feeding mechanism 136, the cleaner mechanism 138 and the lower case 45 in the fertilization case 135 are included in the upper assembly 114, and the connection pipe 133 is included in the lower assembly 115.

As shown in FIG. 2, the connecting pipe 133 has an upper opening 133 d in the intermediate region 133 c and is disposed so as to receive the fertilizer from the fertilizer supply port 41. The connection pipe 133 has the air receiving opening 133 a fluidly connected to the air pipe 150, and the fertilizer discharge opening 133 b fluidly connected to the fertilization hose 134.
In the above-described configuration, the conveying wind from the fertilizer blower 140 passes through the air pipe 150 disposed along the width direction of the rice transplanter main machine 1 and enters the connection pipe 133 from the air receiving opening 133a communicated with the air pipe 150. To send. The fertilizer fed out from the feeding mechanism 136 and fed into the connecting pipe 133 from the upper opening 133d of the connecting pipe 133 is pressure-fed from the fertilizer discharge opening 133b by the pressure recording of the conveying air sent into the connecting pipe 133. The fertilizer hose 134 is discharged.

The upper case 43 in the present embodiment is provided with a plurality of unit clutches 151 that individually engage or block power transmission from the lateral transmission shaft 160 to the feeding drive shaft 55 in the plurality of fertilizer applying apparatuses 100. Yes. A plurality of operation wires 152 for individually operating the plurality of unit clutches 151 are connected to each other, and the plurality of unit clutches 151 can be individually operated manually from the vicinity of the driver seat 21.
In the present embodiment, the bevel gear 91 attached to the lateral transmission shaft 160 is configured to be relatively unrotatable and movable in the axial direction around the lateral transmission shaft 160, and the unit clutch 151 is operated by pulling the operation wire 152. By rotating around the horizontal transmission shaft 160, the bevel gear 91 moves in the axial direction so that the engagement with the bevel gear 75 attached to the pay-out drive shaft 55 can be released.

In this case, by operating the plurality of operation wires 152 individually, the plurality of unit clutches 151 are individually operated, and the power transmission from the lateral transmission shaft 160 to the feeding drive shaft 55 in the plurality of fertilizer application devices 100 is individually performed. Is engaged or disconnected.
Therefore, by operating the plurality of operation wires 152 from the driver's seat 21, the power transmission to the feeding drive shaft 55 in the plurality of fertilizer applying apparatuses 100 can be individually engaged or interrupted.

The plurality of operation wires 152 are connected through the vicinity of the rotation fulcrums 116L and 116R in a state where one end of each of the left and right upper assembly groups 118L and 118R is operatively connected to the corresponding unit clutch 151. It is arranged to go to the driver's seat 21 of the machine 1.
As a result, the required length of the operation wire 152 from the unit clutch 151 to the driver's seat 21 hardly changes before and after turning around the turning fulcrums 116L and 116R in the upper assembly groups 118L and 118R including the feeding mechanism 136. The operation wire 152 can be prevented from interfering with the rotation of the upper assembly groups 118L and 118R around the rotation fulcrums 116L and 116R.

As described above, in the present embodiment, the fertilizer application unit 100 includes the four fertilizer applicators 130 arranged in parallel in the vehicle width direction.
In each fertilizer application device 130, the lateral transmission shaft 160 and the drive output shaft 110 disposed along the vehicle width direction are operatively connected to transmit the rotational power of the drive source 6.
In FIG. 7, the expansion perspective view in the transmission mechanism vicinity of the fertilization unit 100 which concerns on this embodiment is shown.

Specifically, as shown in FIG. 7, the fertilization unit 100 includes a fertilization driving shaft 99 extending in the vertical direction while being operatively connected to the drive source 6 via a drive output shaft 110, and a lower end portion of the fertilization driving shaft 100. A vertical transmission shaft 153 that is detachably connected to an upper end portion of the shaft 99 and is not rotatable about an axis, and the horizontal transmission shaft 160 that is operatively connected to the vertical transmission shaft 153 and extends in the width direction of the rice transplanter machine 1. The feeding drive shaft 55 of the feeding mechanism 136 in the plurality of fertilizer applicators 130 is provided with a lateral transmission shaft 160 operatively connected to each other.
In the present embodiment, the vertical transmission shaft 153 and the lateral transmission shaft 160 are provided relative to the bevel gear 154 provided on the vertical transmission shaft 153 so as not to rotate relative to the horizontal transmission shaft 160. The bevel gear 155 is operatively connected by meshing with it. Further, in the present embodiment, the fertilizer driving shaft 99 has a plurality of rotating shafts, and is supported by the rice transplanter main machine 1 so as to be rotatable around each axis in a state where they are operatively connected to each other.

  With the configuration described above, the rotational power from the drive source 6 can be applied to the drive source 6 so that the fertilizer driving shaft 99 and the lower end extending in the vertical direction can be attached to and detached from the upper end of the fertilizer driving shaft 99 and rotate about the axis. It is transmitted to the vertically connected transmission shaft 153 and is transmitted from the vertical transmission shaft 153 to the horizontal transmission shaft 160 extending in the width direction of the rice transplanter machine 1 while being operatively connected to the vertical transmission shaft 153. As described above, since the feed drive shaft 55 in the plurality of fertilizer application apparatuses 100 is operatively connected to the horizontal transmission shaft 160, the feed mechanism 136 is rotated by rotating the feed drive shaft 55. Can do.

  In the present embodiment, the fertilizer application unit 100 is a coupling 156 supported by the fertilizer driving shaft 99 positioned below the vertical transmission shaft 153 so as not to be relatively rotatable about the axis and movable in the axial direction. A coupling 156 that is directly or indirectly coupled to the transmission shaft 153 so as not to rotate about the axis, and a bias that biases the coupling 156 toward the vertical transmission shaft 153 located above the fertilizer driving shaft 99. A member (here, a coil spring disposed substantially coaxially with the fertilizer driving shaft 99) 157, and the coupling 156 is separated from the vertical transmission shaft 153 against the biasing force of the biasing member 157. By pushing in the direction (downward), power transmission from the fertilizer driving shaft 99 to the vertical transmission shaft 153 can be cut off.

  Further, the fertilizer application unit 100 is a clutch operating member 159 supported so as to be rotatable about a substantially horizontal pivot shaft 158, and when rotated to one side (downward side) about the pivot shaft 158, A clutch operating member 159 that pushes the coupling 156 downward so as to be separated from the vertical transmission shaft 153 against the urging force of the urging member 157, and a base end portion are coupled to the clutch operating member 159. And a clutch operating arm 163.

  In this embodiment, the fertilizer application unit 100 has a plate member 164 provided substantially parallel to the pivot shaft 158 of the clutch operating member 159 behind the driver's seat 21, and the plate member 164 includes the clutch member 164. A locking mechanism 165 that can lock the free end of the operating arm 163 is provided, and the locking mechanism 165 is arranged in parallel with the rotation direction (vertical direction) of the free end of the clutch operating arm 163. The formed locking positions 165a and 165b are provided. The free end of the clutch operating arm 163 extends forward of the vehicle, and is configured to be selectively engageable with either one of the locking positions 165a and 165b of the locking mechanism 165 of the plate member 164.

  With the above configuration, the coupling 156 supported by the fertilizer driving shaft 99 so as not to rotate relative to the axis and to be movable in the axial direction is coupled to the vertical transmission shaft 153 directly or indirectly so as not to be able to rotate about the axis. 99 rotational power is transmitted to the vertical transmission shaft 153. Since the coupling 156 is urged toward the second shaft by the urging member 157, the connection (clutch engagement state) is maintained. At this time, the clutch operating arm 163 is locked to the locking position (clutch engagement position) 165 a of the locking mechanism 165 in the plate member 164.

When the fertilizer driving shaft 99 and the vertical transmission shaft 153 are connected, by manually operating the clutch operating arm 163, the clutch operating member 159 connected to the base end portion of the clutch operating arm 163 is moved to a substantially horizontal pivot shaft. When the clutch actuating member 159 is rotated to one side (downward) around 158, the clutch actuating member 159 pushes the coupling 156 downward against the urging force of the urging member 157 away from the vertical transmission shaft 153. The connection between the fertilizer driving shaft 99 and the vertical transmission shaft 153 is released, and the power transmission is interrupted. At this time, the clutch operating arm 163 is locked to the locking position (clutch disconnection position) 165b of the locking mechanism 165, whereby the clutch disconnected state is maintained.
Therefore, by manually operating the clutch operating arm 163, it is possible to easily perform batch operation of engagement / disconnection of power transmission to the feeding mechanism 136 in the plurality of fertilizer applying apparatuses 100.
Each of the locking positions 165a and 165b has a shape that protrudes in the direction (upward) of the urging force of the urging member 157 generated in the clutch operating arm 163 via the clutch operating member 159. The latching state of the clutch operating arm 163 is maintained at the latching positions 165a and 165b by the biasing force of the biasing member 157.

Here, a plurality of upper assemblies 114 (upper assembly groups 118L and 118R) including the feeding mechanism 136 and the hopper 131 provided in the plurality of fertilizer applicators 130 include the vertical transmission shaft 153 and the horizontal transmission shaft. By being integrally rotated about the rotation fulcrums 116L and 116R together with 160, the lower assembly 115 (lower assembly group 119) is separated. Since the coupling 156 is supported by the fertilizer driving shaft 99, the coupling 156, the clutch operating member 159, and the clutch operating arm 163 all rotate integrally with the upper assembly group 118. do not do.
When the upper assembly groups 118L and 118R are separated from the lower assembly group 119, the fertilizer driving shaft 99 and the vertical transmission shaft 153 extending in the vertical direction are separated. For this reason, in the transmission path for operating the feeding mechanism 136, the axial direction and the separation direction of the transmission path are substantially the same direction (vertical direction), so the upper assembly groups 118L and 118R and the lower assembly group 119 When joined, it is possible to make it difficult for the fertilization driving shaft 99 and the vertical transmission shaft 153 to be displaced, and even if the vertical position is slightly shifted, the fertilization driving shaft 99 and the vertical transmission shaft 153 come into contact with each other. The displacement in the separation / contact direction can be allowed to some extent.
Further, when the upper assembly groups 118L and 118R are separated from the lower assembly group 119, the coupling 156 is separated from the vertical transmission shaft 153 against the urging force of the urging member 157. The upper assembly groups 118L and 118R are rotated around the rotation fulcrums 116L and 116R after the power transmission is interrupted by pushing in the direction of rotation.

Therefore, by using such a coupling 156, a loss in power transmission to the feeding mechanism 136 in the plurality of fertilizer applicators 130 is prevented when the upper assembly groups 118L and 118R and the lower assembly group 119 are connected. On the other hand, when the upper assembly groups 118L and 118R and the lower assembly group 119 are separated, the connection between the fertilizer driving shaft 99 and the upper and lower transmission shafts 153 can be easily released.
Further, since it is not necessary to rotate the clutch operating arm 163, the clutch operating member 159, and the coupling 156 around the rotation supporting points 116L, 116R together with the upper assembly groups 118L, 118R, the clutch operation structure can be further simplified. it can.

In the present embodiment, as shown in FIGS. 3 and 4, the lateral transmission shaft 160 includes a left lateral transmission shaft 160L corresponding to the upper left assembly group 118L and a right transmission assembly corresponding to the upper right assembly group 118R. The left and right lateral transmission shafts 160L and 160R are connected to each other so as to be non-rotatable around the axis in a separable state.
That is, when the left and upper right assembly groups 118L and 118R are connected to the lower assembly group 119, the left and right lateral transmission shafts 160L and 160R are connected to each other so as not to rotate relative to each other. Rotational power from the vertical transmission shaft 153 located on the side assembly group 118R side is transmitted to the feeding mechanisms 136 of the left and upper right assembly groups 118L and 118R. As shown in FIG. 4, a coupling 161 that can be connected to the left and right lateral transmission shafts 160 </ b> L and 160 </ b> R so as not to rotate around the axis is provided. The configuration of the coupling 161 is substantially the same as that of the coupling 156.

The fertilizer application unit 100 further includes a shutter member 200 that can take an open position for opening the upper part of the upper opening 133d of the connection pipe 133 and a cover position for covering the upper part of the upper opening 133d of the connection pipe 133. Yes. The shutter member 210 is configured to take the open position or the cover position in conjunction with the rotation operation around the rotation fulcrums 116L and 116R of the rotation side frame 117.
8 and 9 show a partial rear lower perspective view and a partial rear upper perspective view in the vicinity of the shutter member in the fertilizer application unit of the present embodiment. FIG. 8 shows a state where the upper assembly groups 118L and 118R are connected to the lower assembly group 119, and FIG. 9 shows a state where the upper assembly groups 118L and 118R are separated from the lower assembly group 119. Show. Further, FIG. 10 shows an enlarged rear perspective view in which the vicinity of the shutter member is viewed from another angle in the state of FIG.

In the present embodiment, the fertilizer application unit 100 includes a shutter mechanism 200 including the shutter member 210 as shown in FIGS. 8 to 10.
The shutter mechanism 200 includes a rotation arm 220 that rotates about the rotation fulcrums 116L and 116R in conjunction with a rotation operation about the rotation fulcrums 116L and 116R of the rotation side frame 117, and a rice transplanter book. The driven side member 230 slidably supported in the width direction of the machine 1, the shutter member 210 supported by the driven side member 230, and the rotation fulcrums 116L and 116R of the rotation side frame 117 are separated. The rotation arm 220 and the driven side member 120 are linked so that the driven side member 230 slides to one side and the other side in the width direction of the rice transplanter machine in conjunction with the rotation operation to the side and the connection side The link mechanism 240 is provided.
The shutter member 210 and the driven member 230 may be integrally formed, or may be formed separately and fixed to each other.

  In this embodiment, the link mechanism 240 is provided on the link member 241 fixed to the driven member 230, the long hole 242 formed in the link member 241, and the free end side of the rotating arm 220. And an engaging member 243 engaged with the elongated hole 242.

In order to separate the upper assembly groups 118L and 118R from the lower assembly 119, when the rotation frame 117 is rotated around the rotation fulcrums 116L and 116R, in conjunction with the rotation operation, The rotation arm 220 of the shutter mechanism 200 rotates to one side around the rotation fulcrums 116L and 116R.
Accordingly, the engaging member 243 provided on the rotating arm 220 moves the driven side member 230 through the link member 241 while moving in the long hole 242 formed in the link member 241. 1 is pushed to the one side in the width direction (the driven member 230 corresponding to the upper left assembly 118L is pushed to the right, and the driven member 230 corresponding to the upper right assembly 118R is pushed to the left. Move). Then, the shutter member 210 supported by the driven member 230 at the time when the rotation side frame 117 is rotated by a predetermined angle around the rotation fulcrums 116L and 116R is the upper opening 133d of the connection pipe 133. It is located in the cover position that completely covers.
In the present embodiment, the shutter member 210 is moved to the cover position when the rotation side frame 117 is rotated to the separation side around the rotation fulcrums 116L and 116R (at a time when it is rotated approximately 90 degrees). Be positioned.

As described above, when the upper assembly groups 118L and 118R and the lower assembly group 119 are separated, the shutter member 210 is positioned above the upper opening 133d of the connecting pipe 133 in the lower assembly group 119. The upper part of the upper opening 133d of the connection pipe 133 is covered.
Accordingly, when the upper assembly groups 118L and 118R and the lower assembly group 119 are connected, the lower opening 41 of the fertilizing case 135 is moved into the connection pipe 133 by positioning the shutter member 210 in the open position. While the upper assembly group 118L, 118R and the lower assembly group 119 are separated, the shutter member 210 is positioned at the cover position while allowing the connection to the upper opening 133d. It is possible to prevent foreign matters such as rainwater and dust from entering the upper opening 133d.

Further, by performing a separating operation for separating the upper assembly groups 118L and 118R from the lower assembly group 119 by a pivoting operation around the pivoting fulcrums 116L and 116R of the pivoting frame 117, it is automatically performed. The shutter member 210 is positioned at a cover position above the upper opening 133 d of the connecting pipe 133 in the lower assembly group 119.
Therefore, the shutter member 210 can be positioned at the open position or the cover position by one action of rotating the rotation side frame 117 around the rotation fulcrums 116L and 116R. Thereby, at the time of separation, the shutter member 210 can be surely covered with the upper opening 133d of the connection tube 133, and at the time of connection, the shutter member 210 is connected to the connection tube 133 and the connection tube 133. It is possible to prevent damage between the fertilizer case 135 and the like.

In the present embodiment, the shutter member 210 has an inclined upper surface as shown in FIG. In the present embodiment, the shutter member 210 is formed of a metal plate (iron plate) and is bent at a predetermined angle from the base portion to form an upper surface slope.
As described above, since the upper surface of the shutter member 210 is inclined, even if foreign matter such as rainwater or dust adheres to the upper surface of the shutter member 210, the shutter member 210 falls downward due to the inclination.
Accordingly, it is possible to prevent foreign matters such as rainwater and dust from accumulating on the upper surface of the shutter member 210, and thereby, the connecting pipe from the upper surface of the shutter member 210 when the rotating side frame 117 is rotated. It is possible to effectively prevent the foreign matter from entering the upper opening 133d of 133.
In this embodiment, the slope of the upper surface of the shutter member 210 has a slope that becomes a lower position toward the front of the rice transplanter machine 1, but is not limited thereto. As another example, the upper surface of the shutter member 210 may be formed in a substantially conical shape.

Furthermore, in the present embodiment, when the shutter member 210 is positioned at the cover position, a predetermined gap is provided in the vertical direction between the shutter member 210 and the upper opening 133d of the connection pipe 133.
Accordingly, it is possible to prevent the shutter member 210 from interfering with the connection pipe 133 due to an assembly error.

  As mentioned above, although the fertilizer application unit 100 in one embodiment of this invention was demonstrated, this invention is not limited to the said embodiment, A various improvement, a change, and correction are possible in the range which does not deviate from the meaning.

For example, in the above-described embodiment, two of the plurality (four) of the upper assemblies 114 are regarded as one upper assembly group 118 (118L, 118R), and each is outside the width direction of the rice transplanter machine 1 In the above description, the structure that is integrally rotated around the rotation fulcrums 116L and 116R has been described. However, as shown in FIG. 11, all the upper assemblies 114 are regarded as one upper assembly group 1180, and the rice transplanter main machine. It is good also as a structure rotated integrally around the rotation fulcrum 116 of 1 width direction one side outward.
In this case, it is preferable to provide the rotation fulcrum 116 only on the side opposite to the fertilizer blower 140. Thereby, the fertilizer blower 140 can be installed so that the fertilizer blower 140 does not interfere when the upper assembly group 1180 is rotated (when residual fertilizer is discharged).

  Moreover, in the said embodiment, although the fertilizer accommodation space of the adjacent hopper 131 can be made to distribute fertilizer and the structure which provides the fertilizer discharge port 124 in the hopper 131 of the outermost fertilizer applying apparatus 130 was demonstrated, fertilizer distribution is impossible. The fertilizer discharge port 124 may not be provided. Even in this case, by rotating the upper assembly 114 around the rotation fulcrums 116L and 116R, the discharge operation of the residual fertilizer can be performed more easily than in the past.

FIG. 1 is a side view of a rice transplanter to which a fertilization unit according to an embodiment of the present invention is applied. FIG. 2 is a schematic left side view including a partial cross section near the fertilizer unit of the present embodiment. FIG. 3 is a rear perspective view of the vicinity of the fertilizer unit of the present embodiment. FIG. 4 is a front view of the vicinity of the fertilizer unit of the present embodiment. FIG. 5 is an exploded perspective view of a main part of the fertilizer application in the fertilizer unit of the present embodiment. FIG. 6 is a front perspective view of the vicinity of the fertilizer unit when the upper assembly of the fertilizer unit of the present embodiment is separated. FIG. 7 is an enlarged perspective view in the vicinity of the transmission mechanism of the fertilizer application unit according to the present embodiment. FIG. 8 is a partial rear lower perspective view of the vicinity of the shutter member in the fertilizer application unit of the present embodiment. FIG. 9 is a partial rear upper perspective view of the vicinity of the shutter member in the fertilizer application unit of the present embodiment. FIG. 10 is an enlarged rear perspective view of the vicinity of the shutter member viewed from another angle in the state of FIG. FIG. 11 is a rear view of a rice transplanter to which a fertilization unit according to another embodiment of the present invention is applied.

Explanation of symbols

1 Rice transplanter machine 39 Fertilizer frame 100 Fertilizer unit 114 Upper assembly 115 Lower assembly 116L, 116R Rotating fulcrum 117 Rotating frame 130 Fertilizer 131 Hopper 133 Connecting pipe 133a Air receiving opening 133b Fertilizer discharging opening 133d Connecting pipe Upper opening 135 Fertilization case 136 Feeding mechanism 140 Fertilizer blower 210 Shutter member 390 Fixed side frame

Claims (3)

A plurality of fertilizer applicators having a fertilizer case having an upper opening connected to a lower opening of a hopper and a feeding mechanism housed in the fertilizer case so as to be positioned between the upper opening and the lower opening of the fertilizer case; , A fertilizer frame that supports the plurality of fertilizer application devices along the width direction of the rice transplanter machine, a fertilizer blower connected to the first side in the width direction of the rice transplanter machine in the fertilizer frame, and a rice transplanter machine An air pipe disposed along the width direction of the air pipe, the air pipe having an opening for receiving the conveying air from the fertilizer blower on one end side and the air pipe closed on the other end side, the fertilizer application, Further, an upper opening connected to the lower opening of the fertilizer application case, an air receiving opening communicating with the air pipe, and a conveying wind supplied via the air receiving opening are used to supply the fertilizing case through the upper opening. A fertilization unit with a connection tube having a fertilizer discharging opening for discharging the fertilizer to be,
The fertilizer is separable into an upper assembly including the fertilizer case and the feeding mechanism and a lower assembly including the connection pipe,
The fertilizer application frame is a fixed frame fixed to the rice transplanter machine and a rotating frame that supports the plurality of upper assemblies, and is located on the outermost side in the width direction of the rice transplanter machine. It is connected to the fixed side frame so as to be able to turn around a turning fulcrum along the front-rear direction of the rice transplanter machine outside in the width direction from the outermost fertilizer, and the lower opening of the fertilizer case is connected to the connecting pipe A rotating side frame capable of taking a connection state in which fluid connection is made to the upper opening and a separation state in which the lower opening of the fertilization case is separated from the upper opening of the connection pipe,
The fertilizer application unit further includes a shutter member that can take an open position that opens above the upper opening of the connection pipe and a cover position that covers the upper opening of the connection pipe. Fertilizer unit.   2. The fertilizer application unit according to claim 1, wherein the shutter member takes the open position or the cover position in conjunction with a rotation operation around the rotation fulcrum of the rotation side frame.   The fertilizer application unit according to claim 1, wherein an upper surface of the shutter member is inclined.