JP2006223114A - Fertilizing unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fertilizing unit with which an unloading operation of the residual amount of a fertilizer and a maintenance operation in a fertilizing apparatus are facilitated and which has a simple structure. <P>SOLUTION: The fertilizing unit is equipped with a stationary rail member supported on the main machine of a working vehicle, a movable rail movably connected to the stationary rail member in the direction of vehicle width and the fertilizing apparatus supported on the movable rail member. The movable rail member is made to take a fertilizing operation position in which the fertilizing apparatus is operated and connected to the driving force of the main machine of the working vehicle and a maintenance position in which the fertilizing apparatus is arranged outside from the fertilizing operation position in the direction of vehicle width. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

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

It is conventionally known that a fertilizer and a fertilizer blower are attached to a work vehicle main machine of a rice transplanter, and the fertilizer fed from the fertilizer is supplied to a place to be fertilized by the fertilizer blower.
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, when the fertilizer is fixedly installed, particularly in a fertilizer applied at the center in the vehicle width direction, it is difficult to discharge residual fertilizer in the fertilizer hopper and to perform maintenance work.

From such a point of view, it has been proposed that the fertilizer application device be installed so as to be movable up and down with respect to the work vehicle main machine (see Patent Document 1 below).
However, in such a conventional configuration, there is a problem that a complicated structure is required for raising and lowering the fertilizer application, resulting in high costs.
Furthermore, even if the fertilizer is raised, there is a work vehicle main unit below the fertilizer, so the fertilizer placed at the center in the vehicle width direction is still subject to residual fertilizer discharge work and maintenance work. Difficulty remains.
Japanese Patent Laid-Open No. 10-290611

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

In order to achieve the above object, the present invention provides a fertilizer unit that can be attached to a work vehicle main machine of a rice transplanter, a fixed rail member supported by the work vehicle main machine, and a vehicle width in the fixed rail member. A movable rail member that is movably coupled along a direction, and a fertilizer that is supported by the movable rail member, the movable rail member operatively coupling the fertilizer to a drive source of the work vehicle main unit. There is provided a fertilization unit configured to be able to take a fertilization work position to be performed and a maintenance position at which the fertilizer application apparatus is positioned outward in the vehicle width direction from the fertilization work position.
For example, the maintenance position is set such that the outer side surface of the fertilizer hopper in the fertilizer application located at the innermost position in the vehicle width direction is positioned outward in the vehicle width direction from the body cover of the work vehicle main unit.

In one aspect, a plurality of the fertilizer applicators arranged along the vehicle width direction can be provided.
In this aspect, preferably, the movable rail member includes a first movable rail member that moves a part of the plurality of fertilizers to one side in the vehicle width direction, and a remaining part of the plurality of fertilizers in the other side in the vehicle width direction. And a second movable rail member that moves to the side.

Preferably, the power transmission mechanism is a power transmission mechanism fixedly supported by the work vehicle main unit, the power transmission mechanism including an input unit operatively connected to the drive source and an output unit that outputs power input to the input unit. A mechanism may further be provided.
In such an aspect, the fertilizer application is operatively connected to the output portion of the power transmission mechanism when the movable rail member is positioned at the fertilization work position.

Preferably, the power transmission mechanism may further include a transmission shaft that transmits the power of the output portion of the power transmission mechanism to the fertilizer, and is supported by the movable rail member.
When the movable rail member is positioned at the fertilization work position, the transmission shaft and the output portion are concavo-convexly fitted so that their opposite end portions cannot rotate relative to each other around the axis.

In order to achieve the above object, the present invention is a fertilizer unit that can be attached to a work vehicle main machine of a rice transplanter, comprising a fixed rail member supported by the work vehicle main machine, A power transmission mechanism fixedly supported at the center in the vehicle width direction, wherein the input unit is operatively connected to the drive source of the work vehicle main unit, and the power input to the input unit is transmitted to one side and the other side in the vehicle width direction. A first and second movable rail members positioned on one side and the other side in the vehicle width direction with the power transmission mechanism interposed therebetween, respectively. The first and second movable rail members coupled to the fixed rail member so as to be movable along the vehicle width direction, the first fertilizer applied to the first movable rail member, and the first fertilizer The first movable rail portion in a state of being operatively connected to And a first pumping air supply pipe supported by the first movable rail member in fluid connection with the fertilizer feed port of the first fertilizer application device, and in a vehicle width direction A first pressure-feeding air supply pipe having an open end and an outer end in the vehicle width direction, and a fluid connection in a sealed state to the opening at the outer end of the first pressure-feeding air supply pipe in the vehicle width direction. A fertilizer blower supported by the first movable rail member, a second fertilizer applied by the second movable rail member, and supported by the second movable rail member while being operatively connected to the second fertilizer. And a second pumping air supply pipe supported by the second movable rail member in fluid connection with the fertilizer feed port of the second fertilizer application device, and an inner end in the vehicle width direction Part was opened and the outer end in the vehicle width direction was closed Providing a fertilizer unit which includes a 2 pressurized air supply pipe.
The first movable rail member has a fertilization work position where the first transmission shaft is connected to the first output part, and a maintenance position where the first fertilizer is located outward in the vehicle width direction from the fertilization work position. Configured to get.
The second movable rail member takes a fertilization work position where the second transmission shaft is connected to the second output part, and a maintenance position where the second fertilizer is located outward in the vehicle width direction from the fertilization work position. Configured to get.
When the first and second movable rail members are positioned at the fertilization work positions, respectively, the inner ends in the vehicle width direction of the first and second compressed air supply pipes are fluidly connected in a sealed state.

  Preferably, the first movable rail member and the first fixed rail member, and the second movable rail member and the second fixed rail member are respectively provided with fertilization work positions. A locking mechanism is provided for locking to.

  According to the fertilizer application unit of the present invention, the fertilizer application position where the fertilizer is operatively connected to the drive source of the work vehicle main machine and the maintenance position where the fertilizer is positioned outward in the vehicle width direction from the fertilizer operation position are taken. As described above, since the movable rail member supporting the fertilizer application is movable along the vehicle width direction, the discharge of the remaining fertilizer and the maintenance work in the fertilizer can be facilitated with a simple structure. be able to.

  For example, when the movable rail member is positioned at the maintenance position, the outer surface of the fertilizer hopper located at the innermost position in the vehicle width direction is positioned outward in the vehicle width direction from the body cover of the work vehicle main unit. If it does so, discharge | emission operation | work of residual fertilizer and maintenance work in all the fertilizer application can be facilitated.

  Further, when a plurality of the fertilizer application devices are arranged side by side in the vehicle width direction, the movable rail member includes a first movable rail member that moves a part of the plurality of fertilizer application devices to one side in the vehicle width direction. If the second movable rail member that moves the remainder of the plurality of fertilizers to the other side in the vehicle width direction is included, the remaining fertilizer is discharged from the fertilizer on both sides of the work vehicle main unit. Maintenance work can be performed, and simultaneous work in two-person work can be performed efficiently.

Further, when the movable rail member is positioned at the fertilization work position, the movable ferrule is configured so that the fertilizer is operatively connected to the output of a power transmission mechanism fixedly supported by the work vehicle main unit. The member can be operated with a small operating force.
Further, when the movable rail member supports the transmission shaft operatively connected to the fertilizer application device, and when the movable rail member is positioned at the fertilization work position, the transmission shaft and an output portion in the power transmission mechanism If the opposite end portions of the two are configured to be concavo-convexly fitted so that they cannot rotate relative to each other about the axis, the engagement / interruption of power transmission from the drive source to the fertilizer application is switched only by the sliding operation of the movable rail member. be able to.

Hereinafter, preferred embodiments of a fertilization unit according to the present invention will be described 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 this Embodiment is applied is shown.

First, the whole structure of the rice transplanter A will be described with reference to FIG.
The rice transplanter A includes a work vehicle main machine 1, a planting device 3 attached to the rear of the work vehicle main machine 1, and the work vehicle main machine 1 so as to be positioned in front of the planting device 3. And a fertilization unit 100 attached to the rear.

  As shown in FIG. 1, the work vehicle main machine 1 includes a vehicle body frame 5, a drive source 6 mounted on a front portion of the vehicle body frame 5, and the drive in a state of being operatively connected to the drive source 6. A transmission case 8 disposed behind the power source 6, a pair of front axle cases 9 disposed on both sides of the transmission case 8 in the vehicle width direction, and the pair of front axle cases 9 via a front axle 10A. A pair of paddy field traveling front wheels 10 respectively supported, a rear axle case 12 connected to the rear portion of the transmission case 9 via a connecting frame 11, and a rear axle 13A on both sides in the vehicle width direction of the rear axle case 12 A pair of supported paddy field rear wheels 13 are provided.

  Further, the work vehicle main 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 9, and 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 is disposed at the auxiliary step portion 15 disposed on both sides of the bonnet 7 in the vehicle width direction, the main step portion 16 disposed at the rear of the bonnet 7, and the rear of the main step portion 16. A driver's seat 17 and a fertilizer application unit 18 disposed behind the driver's seat 17 are provided.
The driver seat 17 and the fertilizer application unit 18 are provided via a rear frame 25 erected on the vehicle body frame 5.

  The planting device 3 conveys a planting case 30, a seedling stage 33 supported by the planting case 30 so as to be movable in the vehicle width direction, and a seedling mat placed on the seedling stage 33. A seedling feeding belt (not shown) mounted on the seedling mount so as to be able to rotate, a rotary case 31 rotatably supported by the planting case 30, and a claw case 32 supported by the rotary case 31 And the nail | claw case 32 which has a planting nail | claw is provided.

In the present embodiment, the planting device 3 is for eight strips in which eight single-row seedling platforms 33 on which one row of seedling mats can be placed are arranged in parallel in the vehicle width direction. .
The rotary case 31 is provided for each pair of adjacent seedling platforms 33, and a pair of the claw cases 32 is provided on both sides of each rotary case 31 in the vehicle width direction.
That is, in the present embodiment, the planting device 3 has four rotary cases 31 for two strips and eight claw cases 32.

  The planting case 30 includes a planting drive case 26 having a planting input shaft (not shown) operatively connected to a PTO shaft (not shown) provided in the work vehicle main machine 1, and a vehicle width direction. A horizontal pipe case connected to the planting drive case 26 so as to extend to a horizontal pipe case (not shown) in which a planting drive shaft operatively connected to the planting input shaft is inserted; A vertical case 38 connected to the horizontal pipe case so as to extend rearward from the horizontal pipe case, the vertical case 38 rotatably supporting the rotary case 31, and left and right sides erected on the horizontal pipe case A pair of side frames 34 and a rolling frame (not shown) extending in the vehicle width direction so as to connect the upper portions of the pair of left and right side frames 34 are provided.

  Further, the planting device 3 includes a center float 35 and a side float 36 disposed below the planting case 30.

The planting device 3 having such a configuration is connected to the work vehicle main unit 1 so as to be movable up and down via a lifting link mechanism 2 inserted between the vehicle 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 frame 30 is moved up and down with respect to the work vehicle main unit 1 by moving the lifting hydraulic cylinder 28 forward and backward.

In FIG. 2, the left view of the said fertilizer application unit 100 vicinity is shown.
FIG. 3 shows a schematic front view of the fertilizing unit 100.
As shown in FIGS. 1 to 3, the fertilizer application unit 100 is supported by the vehicle body frame 5 via a fertilization support machine frame 39 so as to be positioned between the driver's seat 21 and the seedling stage 33. ing.

  The fertilizer application unit 100 includes a fixed rail member 110 that is not movable relative to the work vehicle main machine 1, a movable rail member 120 that is connected to the fixed rail member so as to be movable along the vehicle width direction, A fertilizer applying device 130 supported by the movable rail member 120 and a fertilizing fan 140 for feeding the fertilizer fed from the fertilizer applying device 130 are provided.

The fertilizer application unit 100 is provided with the number of fertilizers 130 corresponding to the number of planting strips of the rice transplanter A, so that the fertilizer fed from each fertilizer applicator 130 can be pumped by the single fertilizer blower 140. It is configured.
Specifically, the fertilizer application unit 100 includes a compressed air supply pipe 150 fluidly connected to the plurality of fertilizer devices 130 in addition to the above-described configuration, and the fertilizer blower 140 includes the compressed air supply pipe 150. Thus, the fertilizer fed from the plurality of fertilizer applicators 130 is pumped.
In the present embodiment, the rice transplanter is an 8-row type. Therefore, the fertilizer application unit 100 includes eight fertilizer application devices 130.

  As shown in FIGS. 2 and 3, the fertilizer application device 130 includes a fertilizer hopper 131 having an upper end and a lower end opened, a fertilizer feed body 132 communicated with the lower end opening of the fertilizer hopper, and the fertilizer feed body 132. A connecting pipe 133 to which fertilizer fed out from the fertilizer is supplied, and a fertilizer hose 134 having a base end portion connected to the connecting pipe 133 and a tip end portion positioned on the side of the corresponding float 35, 36.

The fertilizer supply body 132 has a case 132a having an upper end communicated with a lower end opening of the fertilizer hopper 131 and a lower end communicated with the connection pipe 133, and a fertilizer supply mechanism (not shown) accommodated in the case 132a. )).
The case 132a has a discharge port 132b fluidly connected to a lower end opening of the fertilizer hopper 131 on the upstream side of the feeding mechanism, and the residual fertilizer of the fertilizer hopper 131 is discharged through the discharge port 132b. To get.
The fertilizer feeding mechanism is operatively driven by power from the drive source 6 of the working vehicle main unit 1.

As described above, in the present embodiment, the fertilizer application unit 100 includes the eight fertilizer applicators 130 arranged in parallel in the vehicle width direction.
Each fertilizer application 130 is operatively connected to the drive source 6 via a transmission shaft 160 disposed along the vehicle width direction.

Specifically, the fertilizer application unit 100 includes a power transmission mechanism 170 having an input unit operatively connected to the drive source 6 in addition to the above configuration.
As shown in FIG. 3, the power transmission mechanism 170 is fixedly supported substantially at the center in the vehicle width direction, and a fertilizer (hereinafter referred to as a first fertilizer application device) (hereinafter referred to as the first fertilizer) is located on one side in the vehicle width direction with respect to the power transmission mechanism 170. The driving force is output to both the fertilizer 130a) and the fertilizer located on the other side in the vehicle width direction with respect to the power transmission mechanism 170 (hereinafter referred to as the second fertilizer 130b). Has been.
Specifically, the power transmission mechanism 170 includes the input unit and first and second output units 172a and 172b that output the power input to the input unit to one side and the other side in the vehicle width direction, respectively. (See FIG. 5 below).
In the present embodiment, a gear box is adopted as the power transmission mechanism 170, but it goes without saying that a link mechanism having a one-way clutch can be adopted instead.

  The fertilizer application unit 100 uses, as the transmission shaft 160, the first transmission shaft 160a that transmits the power from the first output unit 172a to the first fertilizer 130a, and the power from the second output unit 172b. And a second transmission shaft 160b that transmits the second fertilizer application device 130b.

  Furthermore, the fertilizer application unit 100 includes first and second pumped air supply pipes 150a and 150b that are disposed on the one side and the other side in the vehicle width direction as the pumped air supply pipe 150 with the power transmission mechanism 170 interposed therebetween. Thus, the first and second fertilizer applicators 130a and 130b are respectively connected to the first and second fertilizers 130a and 130b, respectively.

The first pumped air supply pipe 150a has an inner end and an outer end in the vehicle width direction, and an air outlet of the fertilizer blower 140 is connected to the outer end in the vehicle width direction.
Further, the first compressed air supply pipe 150a communicates with the connection pipe 133 in the first fertilizer application device 130a in the middle portion between the inner end portion and the outer end portion in the vehicle width direction (see FIG. 3). .

The second pumping air supply pipe 150b has an opening at the inner end in the vehicle width direction and is sealed at the outer end in the vehicle width direction.
Further, the second pumping air supply pipe 150b is fluidly connected to the connection pipe 133 in the second fertilizer applying apparatus 130b in the middle portion between the inner end portion and the outer end portion of the vehicle width walking (see FIG. 3). ).

  In the present embodiment, as shown in FIG. 3, the movable rail member 120 includes first and second movable rail members 120a located on one side and the other side in the vehicle width direction with the power transmission mechanism 170 interposed therebetween. , 120b.

The first movable rail member 120a includes the first fertilizer 130a located on one side in the vehicle width direction from the power transmission mechanism 170, and the first transmission shaft 160a that transmits driving force to the first fertilizer 130a. The first pressure-feeding air supply pipe 150a fluidly connected to the first fertilizer 130a and the fertilizer blower 140 are supported.
On the other hand, the second movable rail member 120b includes the second fertilizer 130b positioned on the other side in the vehicle width direction from the power transmission mechanism 170, and the second transmission shaft that transmits driving force to the second fertilizer 130b. 160b and the second pumping air supply pipe 150b fluidly connected to the second fertilizer applying apparatus 130b are supported.

In the present embodiment, a first frame body 180a is coupled to the first movable rail member 120a, and the first fertilizer 130a, the first transmission shaft 160a, and the first pressurized air supply pipe. 150a and the fertilizer fan 140 are supported by the first movable rail member 120a via the first frame body 180a.
Similarly, a second frame body 180b is connected to the second movable rail member 120b, and the second fertilizer 130b, the second transmission shaft 160b, and the second pressurized air supply pipe 150b are connected to the second frame. The second movable rail member 120b is supported via a body 180b.

In the present embodiment, the fixed rail member 110 includes first and second fixed rail members 110a and 110b disposed on one side and the other side in the vehicle width direction with the power transmission mechanism 170 interposed therebetween. Yes.
The first and second movable rail members 120a and 120b are coupled to the first and second fixed rail members 110a and 110b so as to be movable in the vehicle width direction, respectively.

The first movable rail member 120a includes a fertilization work position (see FIG. 3) where the first transmission shaft 160a is connected to the first output portion 172a, and the first fertilizer application device 130a from the fertilization work position in the vehicle width direction. The first fixed rail member 110a is movable along the vehicle width direction so that a maintenance position (see FIG. 4) positioned on one side can be taken.
Similarly, the second movable rail member 120b includes a fertilization work position (see FIG. 3) in which the second transmission shaft 160b is connected to the second output portion 172b, and the second fertilizer application apparatus 130b from the fertilization work position. The second fixed rail member 110b is movable along the vehicle width direction so that a maintenance position (see FIG. 4) positioned on the other side in the vehicle width direction can be taken.
When both the first and second movable rail members 120a and 120b are positioned at the fertilization work position, the openings at the inner ends in the vehicle width direction of the first and second pumped air supply pipes 150a and 150b are fluidly connected. It has come to be.

  In the fertilizer application unit 100 having such a configuration, the movable rail member 120 is positioned at the maintenance position while the movable rail member 120 is positioned at the maintenance position, while the movable rail member 120 is positioned at the fertilization operation position. The discharge operation of the residual fertilizer and the maintenance operation of the fertilizer application device 130 can be performed very easily.

Preferably, when the first movable rail member 120a is positioned at the maintenance position, the first fertilizer 130a ′ located on the innermost side in the vehicle width direction of the first fertilizer 130a is disposed on one side of the work vehicle main unit 1. When the second movable rail member 120b is positioned at the maintenance position, the second fertilizer applying device 130b ′ positioned at the innermost side in the vehicle width direction of the second fertilizer applying device 130b is disposed on the work vehicle. It can be configured to be located near the other end of the machine 1.
By providing such a configuration, it is possible to facilitate the discharge work of residual fertilizer and the maintenance work for all of the plurality of fertilizer applicators 130.

  In the present embodiment, as shown in FIG. 4, when the first movable rail member 120a is positioned at the maintenance position, the outer surface 131 ′ in the vehicle width direction of the fertilizer hopper 131 in the first fertilizer 130a ′ When the second movable rail member 120b is positioned at the maintenance position and is located outward from the cover 14 in the vehicle width direction, the vehicle width direction outer side surface 131 ′ of the fertilizer hopper 131 in the second fertilizer application 130b ′ is the vehicle body. The cover 14 is configured to be located outward in the vehicle width direction, thereby facilitating the residual fertilizer discharge work and the maintenance work in the fertilizer hopper 131 in all the fertilizer applicators 130 and the maximum in the maintenance position. Vehicle width (the vehicle width direction outer end of the first movable rail member 120a and the vehicle width of the second movable rail member 120b Thereby achieving a reduction in the vehicle width) which is bounded by the Kosototan portion.

Furthermore, in the present embodiment, as described above, the first fertilizer application device 130a disposed on one side in the vehicle width direction is the first movable with reference to the power transmission mechanism 170 disposed in the center in the vehicle width direction. The rail member 120a is pulled out to one side in the vehicle width direction, and the second fertilizer applying device 130b arranged on the other side in the vehicle width direction is pulled out to the other side in the vehicle width direction by the second movable rail member 120b (see FIG. 4).
Therefore, when two people perform the remaining amount fertilizer discharge operation or the fertilizer application maintenance operation, the simultaneous operation can be performed without difficulty.

FIG. 5 (a) shows a schematic front view of the vicinity of the power transmission mechanism 170 in a state where the first and second movable rail members 120a and 120b are both positioned at the fertilization work position.
FIG. 5B is a cross-sectional view taken along line V (b) -V (b) in FIG.

  As shown in FIG. 5, in the present embodiment, the axial direction of the first transmission shaft 160a and the first output portion 120a is the same as the sliding direction of the first movable rail member 120a, and the second transmission The axial direction of the shaft 160b and the second output portion 120b is the same as the sliding direction of the second movable rail member 120b, and the first movable rail member 120a includes the first transmission shaft 160a and the first output portion 172a. When positioned at the fertilization work position, the opposite end portions of each other are concavo-convexly fitted so as not to rotate relative to each other about the axis, and the second transmission shaft 160b and the second output portion 172b are connected to the second movable rail member 120b. Is positioned at the fertilization work position, the opposite end portions of each other are configured to be concavo-convex fitted so as not to rotate relative to each other about the axis.

  By providing such a configuration, it is possible to engage / cut off the power transmission from the drive source 6 to the fertilizer applying device 130 only by sliding the movable rail member 120, thereby improving operability. it can.

  In the present embodiment, a joint having a non-circular convex portion 161 in section in the vehicle width direction inner end portion of the transmission shaft 160 and a concave portion corresponding to the convex portion 161 in the output portion 172 is provided. The member 173 is extrapolated so as not to be relatively rotatable.

  Preferably, a chamfered portion 162 can be provided on the opposite end surface of the convex portion 161 and / or the opposite end surface of the concave portion, whereby the corresponding transmission shaft 160 and the output portion 172 can be more easily connected. it can.

As shown in FIG. 5, the power transmission mechanism 170 is provided with a clutch mechanism 175 that selectively connects or blocks power transmission from the input unit to the first and second output units 172a and 172b. Can do.
By providing such a clutch mechanism 175, the operation and stop of the whole of the plurality of fertilizer applicators 130 can be easily performed.

FIG. 6 shows a schematic front view of the movable rail member 120 and the fixed rail member 110.
In FIG. 6, the second movable rail member 120b and the second fixed rail member 110b are shown.

  As shown in FIG. 6, in the present embodiment, the fixed rail member 110 is a mounting flange 111 positioned at an end portion on the inner side in the vehicle width direction (right side in FIG. 6), and the fertilizer support A mounting flange 111 connected to the machine frame 39, a fixed rail main body 112 extending from the mounting flange 111 outward in the vehicle width direction (left side in FIG. 6), and an outer side in the vehicle width direction of the fixed rail main body 112 A fixed side roller mounting flange 113 provided at the end of the fixed side roller, and a fixed side roller 114 rotatably supported by the fixed side roller mounting flange 113.

  The movable rail member 120 includes a movable side roller mounting flange 121 located at an inner end in the vehicle width direction, a pair of movable side rollers 122 rotatably supported by the movable side roller mounting flange 121, And a movable rail body 123 extending outward from the movable roller mounting flange 121 in the vehicle width direction.

  The movable rail member 120 and the fixed rail member 110 are in a state where the fixed rail body 112 is sandwiched between the pair of movable side rollers 122 and the fixed side roller 114 is engaged with the movable rail body 123. Thus, the movable rail member 120 is movable in the vehicle width direction with respect to the fixed rail member 110.

  Preferably, a lock mechanism 200 that locks the movable rail member 120 at the fertilization work position can be provided, thereby effectively preventing the movable rail member 120 from moving from the fertilization work position unexpectedly. .

  7A and 7B show a partial front view and a partial plan view of the movable rail member 120 and the fixed rail member 110, respectively, when the movable rail member 120 is positioned at the fertilization work position.

  In the present embodiment, as shown in FIGS. 6 and 7, the lock mechanism 200 is a lock pin supported by the fixed rail body 112 so as to be detachable from the movable rail body 123. 201, an urging member 202 that urges the lock pin 201 toward the movable rail body 123, and the lock pin 201 is engaged when the movable rail member 120 is positioned at the fertilization work position. And an engaging recess 203 provided in the movable rail main body 123.

  By providing such a lock mechanism 200, the lock mechanism 200 can automatically lock the movable rail member 120 at the fertilization work position simply by positioning the movable rail member 120 at the fertilization work position. And the movement from the fertilization work position contrary to the meaning of this movable rail member 120 can be prevented reliably.

  The movable rail member 123 is slid outward in the vehicle width direction while the lock pin 201 is separated from the movable rail body 123 against the urging force of the urging member 202, thereby moving the movable rail member. 120 can be easily moved from the fertilization work position to the maintenance position.

FIG. 8 is an enlarged view of the first and second movable air supply pipes 150a and 150b in the vicinity of opposing end portions in a state where both the first and second movable rail members 120a and 120b are positioned at the fertilization work position. .
Further, FIG. 9 shows the opposed end portions of the first and second pumping air supply pipes 150a and 150b in a state where the first and second movable rail members 120a and 120b are moved from the fertilizer application position to the maintenance position. An enlarged view of the vicinity is shown.

As shown in FIGS. 8 and 9, in the present embodiment, a pair of first packing members 250 and a second elastic member are provided at opposite ends of the first and second compressed air supply pipes 150a and 150b. A packing member 260 is provided.
FIG. 10 shows a front view of the pair of first and second packing members 250 and 260.

Specifically, in the present embodiment, a first packing member 250 attached to the first pressurized air supply pipe 150a and an opening at the inner end in the vehicle width direction of the first pressurized air supply pipe 150a, A first packing holding plate 259 for fixing the first packing member 250 to the first compressed air supply pipe 150a with a fastening member such as a bolt is provided.
As shown in FIGS. 8 to 10, the first packing member 250 includes a hollow first main body portion 251 that is elastically fitted to the opening end portion of the corresponding compressed air supply pipe 150 from the outside, and the first packing member 250. It integrally has a hollow convex portion 255 extending outward from one main body portion 251.
Specifically, as shown in FIGS. 9 and 10, the hollow first main body portion 251 includes an outer peripheral portion 252 extending toward the outer peripheral surface side of the peripheral wall 151 in the corresponding compressed air supply pipe 150, and an inner periphery of the peripheral wall. A space defined by the outer peripheral portion 252, the inner peripheral portion 253, and the connecting portion 254; and an inner peripheral portion 253 that extends to the surface side, and a connecting portion 254 that connects the outer peripheral portion 252 and the inner peripheral portion 253. In addition, an opening end portion of the corresponding compressed air supply pipe 150 is inserted.
The hollow convex portion 255 extends outward from the inner peripheral portion 253, and a tip end portion projects through the opening 259 ′ of the first packing pressing plate 259.

On the other hand, a second packing member 260 attached to the second pumping air supply pipe 150b and the second packing member 260 are provided at the opening at the inner end of the second pumping air supply pipe 150b in the vehicle width direction. A second packing holding plate 260 fixed to the second pumping air supply pipe 150b with a fastening member such as a bolt is provided.
As shown in FIGS. 8 to 10, the second packing member 260 has a hollow second main body portion 261 that is elastically fitted from the outside to the opening end portion of the corresponding compressed air supply pipe 150. Yes.
As shown in FIGS. 9 and 10, the hollow second main body portion 261 includes an outer peripheral portion 262 extending on the outer peripheral surface side of the peripheral wall 151 in the corresponding compressed air supply pipe 150, and an inner peripheral surface side of the peripheral wall. It has an inner peripheral part 263 that extends, and a connecting part 264 that connects the outer peripheral part 262 and the inner peripheral part 263, and faces the space defined by the outer peripheral part 262, the inner peripheral part 263, and the connecting part 264. The opening end of the compressed air supply pipe 150 is inserted.
The second packing pressing plate 269 has a shape and dimension such that the tip of the hollow convex portion 255 of the first packing member 250 is pressed.
That is, the second packing pressing plate 269 has an opening 269 ′ communicating with the opening 259 ′ of the first packing pressing plate 259, and a contact area 269 ″ surrounding the opening 269 ′. The tip of the hollow convex portion 255 of the first packing member 250 is in pressure contact with the corresponding contact region 269 ″.

  In the present embodiment, by providing such a pair of packing members 250 and 260, when the first and second movable rail members 120a and 120b are positioned at the fertilization work position, the first and second It is effectively prevented that the compressed air leaks from the connection portion of the compressed air supply pipes 150a and 150b.

  That is, by providing such a configuration, when the first and second movable rail members 120a and 120b are positioned at the fertilization work position, the hollow convex portion 255 of the first packing member 250 is moved to the second packing. It is pressed against the contact area 269 ″ of the pressing plate 269 in an elastically deformed state, and it is effective that the compressed air leaks from the connection portion of the first and second pressurized air supply pipes 150a and 150b. To prevent.

FIG. 1 is a side view of a rice transplanter to which a fertilization unit according to the present invention is applied. FIG. 2 is a schematic left side view of the vicinity of the fertilizing unit of the rice transplanter shown in FIG. FIG. 3 is a front view of the fertilizer unit in the rice transplanter shown in FIGS. 1 and 2, and shows a state in which the first and second movable rail members in the fertilizer unit are located at the fertilization work position. FIG. 4 is a front view of the fertilizer application unit, showing a state where the first and second movable rail members are positioned at the maintenance position. FIG. 5 (a) is a schematic front view of the vicinity of the power transmission mechanism in the fertilizer application unit. FIG. 5B is a cross-sectional view taken along line V (b) -V (b) in FIG. FIG. 6 is a schematic front view of the movable rail member and the fixed rail member in the fertilizer application unit. FIGS. 7A and 7B are a partial front view and a partial plan view of the movable rail member and the fixed rail member, respectively, in a state where the movable rail member is positioned at the fertilization work position. FIG. 8 is an enlarged front view of the joint portion of the first and second pumped air supply pipes in the fertilizer application unit, and shows a state in which the first and second movable rail members are positioned at the fertilization work position. . FIG. 9 is an enlarged front view of the joint portion of the first and second pumping air supply pipes, and the first and second movable rail members are being moved from the fertilizer application position to the maintenance position. Is shown. FIG. 10 is a front view of a pair of elastic packing members attached to opposing ends of the first and second compressed air supply pipes.

Explanation of symbols

A Rice transplanter 1 Work vehicle Main machine 100 Fertilizer unit 110a First fixed rail member 110b Second fixed rail member 120a First movable rail member 120b Second movable rail member 130a First fertilizer device 130b Second fertilizer device 140 Fertilizer fan 150a First 1 pumping air supply pipe 150b 2nd pumping air supply pipe 160a 1st transmission shaft 160b 2nd transmission shaft 170 Power transmission mechanism (gear box)
172a First output unit 172b Second output unit 200 Lock mechanism

Claims (7)

It is a fertilizer unit that can be attached to the working machine of the rice transplanter,
A fixed rail member supported by the work vehicle main unit;
A movable rail member connected to the fixed rail member movably along the vehicle width direction;
A fertilizer application device supported by the movable rail member;
The movable rail member may take a fertilization work position where the fertilizer is operatively connected to a drive source of the work vehicle main machine, and a maintenance position where the fertilizer is located outward in the vehicle width direction from the fertilizer work position. The fertilizer application unit characterized by being configured. The fertilizer has a fertilizer hopper capable of accommodating fertilizer,
When the movable rail member is positioned at the maintenance position, the outer surface of the fertilizer hopper positioned at the innermost position in the vehicle width direction is positioned outward in the vehicle width direction from the vehicle body cover of the work vehicle main unit. The fertilizer application unit according to claim 1. Comprising a plurality of the fertilizer applicators arranged along the vehicle width direction;
The movable rail member includes a first movable rail member that moves a part of the plurality of fertilizers to one side in the vehicle width direction, and a second movable rail that moves the rest of the plurality of fertilizers to the other side in the vehicle width direction. It has a member, The fertilizer application unit of Claim 1 or 2 characterized by the above-mentioned. A power transmission mechanism fixedly supported on the work vehicle main machine, the power transmission mechanism having an input section operatively connected to the drive source and an output section for outputting power input to the input section; In addition,
The fertilizer application device is configured to be operatively connected to an output portion of the power transmission mechanism when the movable rail member is positioned at a fertilization work position. The fertilizer application unit described in crab. A transmission shaft for transmitting the power of the output portion of the power transmission mechanism to the fertilizer, further comprising a transmission shaft supported by the movable rail member;
The transmission shaft and the output portion are configured such that when the movable rail member is positioned at a fertilization work position, the opposite end portions of the transmission shaft and the output portion are unevenly fitted so as not to rotate relative to each other around the axis. The fertilizer application unit according to claim 4. It is a fertilizer unit that can be attached to the working machine of the rice transplanter,
A fixed rail member supported by the work vehicle main unit;
A power transmission mechanism fixedly supported at the center of the work machine in the vehicle width direction, wherein the input unit is operatively connected to a drive source of the work machine, and the power input to the input unit is transmitted in the vehicle width direction. A power transmission mechanism having first and second output portions that output toward one side and the other side, respectively;
First and second movable rail members respectively positioned on one side and the other side in the vehicle width direction with the power transmission mechanism interposed therebetween, the first movable rail member being connected to the fixed rail member so as to be movable along the vehicle width direction. And a second movable rail member,
A first fertilizer applicator supported by the first movable rail member;
A first transmission shaft supported by the first movable rail member in a state in which the first fertilizer is operatively connected;
A first compressed air supply pipe supported by the first movable rail member in a fluid connection state with a fertilizer feed port of the first fertilizer application device, wherein the inner end of the vehicle width direction and the outer end of the vehicle width direction A first compressed air supply pipe having an opening at a portion;
A fertilizer blower supported by the first movable rail member in a state of being fluidly connected in a sealed state to an opening of a vehicle width direction outer end portion of the first pressurized air supply pipe;
A second fertilizer application supported by the second movable rail member;
A second transmission shaft supported by the second movable rail member in a state of being operatively connected to the second fertilizer application;
A second pressurized air supply pipe supported by the second movable rail member in fluid connection with a fertilizer feed port of the second fertilizer application device, wherein an inner end in the vehicle width direction is an opening; and A second compressed air supply pipe whose outer end in the vehicle width direction is closed,
The first movable rail member has a fertilization work position where the first transmission shaft is connected to the first output part, and a maintenance position where the first fertilizer is located outward in the vehicle width direction from the fertilization work position. Configured to get and
The second movable rail member takes a fertilization work position where the second transmission shaft is connected to the second output part, and a maintenance position where the second fertilizer is located outward in the vehicle width direction from the fertilization work position. Is configured to get
When the first and second movable rail members are positioned at the fertilization work positions, respectively, the inner ends in the vehicle width direction of the first and second compressed air supply pipes are fluidly connected in a sealed state. Fertilizer unit characterized by that. The first movable rail member and the first fixed rail member, and the second movable rail member and the second fixed rail member are respectively locked in the fertilization work position. The fertilizer application unit according to claim 6, further comprising a locking mechanism.

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