JP6635882B2 - Paddy field work vehicle - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a configuration of a maintenance work in a paddy field working vehicle that supplies agricultural granules (fertilizer, chemicals, seeds, etc.) to a rice field, such as a riding type rice transplanter or a riding type direct sowing machine.

  In a riding type rice transplanter, which is an example of a paddy field work vehicle, as disclosed in Patent Document 1, a storage unit (see 31 of FIGS. 1, 2 and 3 of Patent Document 1) stores fertilizer (corresponding to powder and granules). ) And a feed-out section (32 in FIGS. 1, 2, and 8 of Patent Document 1) in which a rotating body (37 in FIG. 8 of Patent Document 1) for feeding the powder and granules is provided. There is a configuration in which the fertilizer is fed from the storage unit by the feeding unit and supplied to the rice field.

In the case where the storage section and the feeding section as described above are provided, it is necessary to perform maintenance work on the feeding section.
In Patent Document 1, the upper portion of the feeding portion is connected to the lower portion of the storage portion, and in the portion of the rotating shaft of the rotating body, the feeding portion is the upper feeding case (35 in FIGS. 8 and 9 of Patent Document 1). And a lower extension case (36 in FIGS. 8 and 9 of Patent Document 1).
As a result, the lower feeding case is separated from the upper feeding case to the lower side, thereby performing maintenance work on the feeding portion from below the feeding portion (see FIGS. 8 and 9 of Patent Document 1).

JP 2013-74A

In Patent Literature 1, since the feeding portion is divided into an upper feeding case and a lower feeding case in a portion of the rotating shaft of the rotating body, the split portion of the upper and lower feeding cases is located in the bearing portion of the rotating body. become.
As a result, the bearing portion of the rotating body has a divided structure that is divided into an upper extension case-side portion and a lower extension case-side portion, which is disadvantageous in terms of simplification of the structure. .

  An object of the present invention is to simplify the maintenance structure of a payout unit in a paddy field working vehicle provided with a storage unit that stores the powder and granules, and a payout unit that feeds the powder and granules from the storage unit and supplies the powder to the rice field. And

(Constitution)
A feature of the present invention resides in that a paddy working vehicle is configured as follows.
A storage unit that stores the powder and granules, and a feeding unit that is connected to the storage unit and feeds the powder and granules from the storage unit and supplies the powder to the rice field, is provided.
The storage unit is separable from the payout unit,
A movement mechanism that movably supports the storage unit is provided between a working position where the storage unit is connected to the feeding unit and a non-working position where the storage unit is separated from the feeding unit and separated. And
The storage unit is provided with an open / close unit operable between an open position that allows the particulates to enter the payout unit from the storage unit and a closed position that stops the particulates from exiting the storage unit. ,
A case in which the feeding portion is connected to the storage portion when the storage portion is set to the working position, and is opened upward by separating from the storage portion when the storage portion is moved to the non-working position. A bearing portion that is held by the case by being inserted from the upper side to the lower side with respect to the case, a drive shaft rotatably supported by the bearing portion, and the drive shaft. And a rotating body that integrally rotates, and a drive gear is provided outside the case among the drive shafts,
With the storage portion in the non-working position, by pulling the bearing portion upward from the case, the drive shaft, the rotating body, and the drive gear can be integrally removed from the case. It is possible.

(Action and effect of the invention)
According to the present invention, the storage unit can be separated from the feeding unit and separated from the feeding unit by the moving mechanism from the state where the storage unit is connected to the feeding unit (working position) (non-working position). Thereby, the portion of the feeding portion to which the storage portion is connected (the portion of the feeding portion in which the storage portion is separated) is in an open state, so that the maintenance operation of the feeding portion can be performed from the aforementioned feeding portion. . Further, when performing maintenance on the feeding portion, the work can be easily performed by removing the bearing portion, the drive shaft, and the rotating body.

  According to the present invention, there is provided a relatively simple separation structure for separating the storage section from the feeding section, and since the feeding section is not divided at the portion of the rotating shaft of the rotating body for feeding out the granular material (rotating body) Is not provided with a split structure), which is advantageous in terms of simplification of the structure.

  As described above, when the storage unit is separated from the feeding unit and moved to the non-working position, there is a possibility that the granular material remaining in the storage unit comes out of the storage unit and adheres to each part of the body (for example, If fertilizer adheres to metal parts, rust may easily occur on the metal parts).

  According to the present invention, when the storage unit is moved to the non-working position, by operating the opening and closing unit to the closed position in advance, when the storage unit is moved to the non-working position, the powder remaining in the storage unit is moved. It is possible to prevent the granules from coming out of the storage section, and it is possible to prevent a problem caused by the powder or granules adhering to each part of the body.

Next, when the storage section is moved to the working position, the opening / closing section may be operated to the open position, and the granular material enters the delivery section from the storage section and is fed out from the delivery section.
When setting the state in which the granular material is not supplied to the rice field in a state where the storage unit is located at the working position, by operating the opening / closing unit to the closed position, the state in which the granular material is discharged from the storage unit (when the granular material is The state in which the powder and granules are not supplied to the rice field can be easily set because the state of entering the feeding section is stopped.

(Constitution)
In the present invention,
The moving mechanism supports the storage unit, and has a second frame in a front-rear direction that is swingably supported around a fulcrum in a left-right posture at a rear end,
A support member is swingably supported back and forth with respect to a front portion of the second frame, and a pin at a swing end of the support member is inserted into an intermediate frame constituting a payout frame supporting the payout portion. A long hole is formed along the front-back direction,
By the second frame swinging about the fulcrum, the storage unit becomes movable between the working position and the non-working position, and the storage unit is moved to the non-working position. It is preferable that the support member is erected, and a recess into which the pin is fitted is formed in the elongated hole in the erected state .

(Action and effect of the invention)
According to the present invention, the storage section can be moved between the working position and the non-working position by swinging the second frame of the moving mechanism. When the storage section is set at the non-working position, the storage section can be held at the non-working position by inserting the pin of the support member into the recess of the elongated hole of the intermediate frame.

(Constitution)
In the present invention,
A plurality of the payout portions are provided adjacent to each other, and the common storage portion is provided over a plurality of the payout portions,
It is preferable that a plurality of the opening and closing sections corresponding to the plurality of the feeding sections are provided in the storage section.

(Action and effect of the invention)
According to the present invention, the maintenance operation of the plurality of payout portions can be easily performed by moving the common storage portion over the plurality of payout portions to the non-working position.

  According to the present invention, a plurality of opening / closing sections corresponding to the plurality of feeding sections are provided in the storage section. Accordingly, as described above, when the state where the granular material is not supplied to the rice field surface in the state where the storage unit is located at the working position is set, by operating the opening / closing unit to the closed position for each feeding unit, the feeding unit is set. In each case, a state in which the granular material is not supplied to the rice field can be set.

(Constitution)
In the present invention,
It is preferable that the upper part of the feeding part and the lower part of the storage part be freely connected and separated.

(Action and effect of the invention)
According to the present invention, the upper portion of the feeding portion is connected to the lower portion of the storage portion (work position), and the lower portion of the storage portion can be separated from the upper portion of the feeding portion, and the storage portion can be separated from the feeding portion (non-operating position). Working position). Thereby, since the upper part of the feeding part is opened, the maintenance work of the feeding part can be easily performed not from the lower side of the feeding part but from the upper side of the feeding part.

(Constitution)
In the present invention,
The feeding unit is provided at a rear portion of the fuselage,
The working position in which the lower part of the storage part is connected to the upper part of the feeding part, and the lower part of the storage part is separated from the upper part of the feeding part and the storage part is separated upward and rearward from the feeding part. It is preferable that, over the non-working position, the storage unit is supported by the moving mechanism so as to be swingable around a horizontal axis in the left-right direction on the rear side of the feeding unit.

(Action and effect of the invention)
In a paddy field work vehicle, as disclosed in Patent Document 1, for example, a payout portion may be provided at a rear portion of the body. In this case, the worker of the machine is located in front of the storage unit, and the worker of the machine moves the storage unit to the working and non-working positions from the front of the storage unit.

According to the present invention, since the storage unit is swingably supported around the horizontal axis on the rear side of the feeding unit by the moving mechanism, the worker of the machine body located on the front side of the storage unit can operate at the work position and the work position. The storage section can be easily moved to the non-working positions above and behind the position.
In the non-working position, the storage section is separated upward and rearward from the feeding section, so that the worker of the machine located in front of the storage section does not hinder the maintenance work, and the feeding section is not disturbed. Maintenance work can be easily performed.

It is a whole side view of a riding type rice transplanter. It is a whole front view of a fertilizer application apparatus. It is a whole rear view of a fertilizer application apparatus. FIG. 3 is an overall plan view near a payout portion. It is the whole top view near the connection part of a storage part. FIG. 6 is a cross-sectional view in the VI-VI direction of FIG. 2 in a state where the storage unit has been operated to a work position. FIG. 6 is a cross-sectional view in the VI-VI direction of FIG. 2 in a state where the storage unit is operated to a non-working position. It is a vertical side view of a delivery part. It is a top view of a delivery part. It is a side view of a delivery part. It is a vertical front view of a paying-out part. It is a top view of the connection part of a storage part. FIG. 3 is a cross-sectional view in the XIII-XIII direction of FIG. 2 in a state where a storage unit is operated to a working position. It is a schematic plan view which shows the transmission system of a fertilizer application apparatus. It is a schematic plan view of a fertilizer application apparatus.

  The front-rear direction and the left-right direction in the embodiment of the present invention are described as follows unless otherwise specified. The traveling direction on the forward side during the work traveling of the aircraft is “front”, and the traveling direction on the reverse side is “rear”. A direction corresponding to the right side with respect to the forward posture in the front-back direction is “right”, and a direction corresponding to the left side is “left”.

[1]
The overall configuration of the riding rice transplanter will be described.
As shown in FIG. 1, a link mechanism 3 is provided at the rear of the body supported by right and left front wheels 1 and right and left rear wheels 2. A row-planting type seedling planting device 5 is supported so as to be able to move up and down, and a hydraulic cylinder 4 that drives the link mechanism 3 up and down is provided to constitute a riding type rice transplanter that is an example of a paddy field working vehicle.

  As shown in FIG. 1, the seedling planting apparatus 5 includes four transmission cases 6, a rotation case 7 rotatably supported on the right and left rear portions of the transmission case 6, and both ends of the rotation case 7. A pair of planting arms 8, a float 9 and a seedling rest 10 are provided.

  As shown in FIG. 1, the power of an engine 17 at the front of the body is controlled by a hydrostatic continuously variable transmission (not shown) for running, a stock transmission (not shown) provided in a transmission case 18, and The seedling is transmitted from a planting clutch (not shown) to the seedling planting device 5 via a PTO shaft 19. As a result, the rotating case 7 is driven to rotate as the seedling rest 10 is reciprocally traversed laterally, so that the planting arms 8 alternately take out the seedlings from the lower part of the seedling rest 10 and place them on the rice field. Plant.

  As shown in FIG. 1, the right and left body frames 28 are arranged in the front-rear direction, the transmission case 18 is connected to the front of the body frame 28, and the engine 30 is connected to the frame 30 connected to the front of the transmission case 18. 17 are supported. Right and left support members 38 are connected to the rear of the body frame 28, and the driver seat 31 is supported by the support members 38.

  As shown in FIG. 1, the step 32 is supported by the body frame 28, and the rear step 33 is supported by the support member 38. As a result, the rear step 33 is arranged at a higher position than the step 32 and is provided at the rear of the fuselage. The driver seat 31 is provided at the left and right center of the front of the rear step 33. Above the rear step 33, the fertilizer application device 11 is provided.

[2]
Next, the overall configuration of the fertilizer application device 11 will be described.
As shown in FIGS. 1, 2, and 15, eight feeding portions 13 are arranged along the left-right direction at the rear of the body. A right storage unit 12 for storing a granular fertilizer (corresponding to a granular material) is connected to an upper part of the four right feeding units 13, and is connected to an upper part of the four left feeding units 13. The left storage unit 12 that stores the granular fertilizer (corresponding to the granular material) is connected thereto.

  As shown in FIGS. 1, 2 and 15, a blower 14 and an electric motor 25 for driving the blower 14 are provided on the left side of the fertilizer application device 11, and a left side frame 41 ([3] described later) (See FIG. 1).

  As shown in FIGS. 2 and 15, a branch portion 26 is connected to the blower 14, and a supply duct 27 is connected between the branch portion 26 and a front portion of the feeding portion 13. 13a is connected to the supply duct 27. As shown in FIG. 1, a suction duct 20 is connected to the blower 14, and the suction duct 20 extends below the rear steps 33 and 32 through an opening (not shown) of the rear step 33. , Near the engine 17.

  As shown in FIGS. 1 and 15, the groove 9 is connected to the float 9, and is provided with eight groovers 15. The eight groovers 15 extend over the feeding portion 13 and the groover 15. Hose 16 is connected. As described above, the fertilizing device 11 is configured by the storage unit 12, the feeding unit 13, the blower 14, the groove generator 15, the hose 16, and the like.

As shown in FIGS. 1 and 15, in the planting operation state, warm air near the engine 17 is sucked into the blower 14 through the suction duct 20 by the suction action of the blower 14, and the wind blown by the blower 14 is reduced. It is supplied to the feeding section 13 through the supply duct 27.
When the fertilizer is fed out of the storage unit 12 by a predetermined amount by the feeding unit 13, the fertilizer is supplied to the groove generator 15 through the hose 16 by the blowing air of the blower 14, and is formed on the rice field by the groove generator 15. Fertilizer is supplied to the ditch by way of a ditch generator 15.

[3]
Next, the support structure of the feeding portion 13 in the fertilizer application device 11 will be described.
As shown in FIGS. 2, 3, 4, and 6, right and left support frames 39 are connected to the rear of the support member 38 and extend upward through the rear step 33 to support the right and left support frames. A rectangular pipe-shaped rear frame 40 is connected to the upper part of the frame 39 in the left-right direction.

As shown in FIGS. 2, 3, 4, and 6, a horizontal frame 41 formed by bending a plate material into a box shape is connected to the right and left portions of the rear frame 40 in the front-rear direction, and the right and left horizontal frames are provided. A front frame 42 is connected in the left-right direction over the front portion of the front frame 41. A plurality of plate-shaped intermediate frames 43 are connected to each other across an intermediate portion of the rear frame 40 in the left-right direction and an intermediate portion of the front frame 42 in the left-right direction.
As described above, the rear frame 40, the horizontal frame 41, the front frame 42, the intermediate frame 43, and the like constitute the feeding portion frame 44 having a rectangular shape in plan view.

  As shown in FIGS. 2 and 4, in the eight feeding portions 13, two feeding portions 13 are provided adjacent to each other (connected). The two feeding portions 13 are disposed between the front and rear frames 42 and 40 in the front-back direction in plan view, and between the horizontal and intermediate frames 41 and 43 (between the intermediate frames 43) in left-right direction in plan view. The front portion of the feeding portion 13 is arranged and connected to the front frame 42. As shown in FIG. 3 and FIG. 13, a plurality of frames 45 are connected to the front frame 42 and extend obliquely downward on the rear side, and the feeding portion 13 is connected to the frame 45.

  As shown in FIGS. 3 and 6, a funnel portion 13 b is provided at a lower portion of the feeding portion 13. A suction portion 13a is provided at a front portion of the funnel portion 13b of the feeding portion 13, and a supply duct 27 is connected to the suction portion 13a of the feeding portion 13, and a hose 16 is provided at a rear portion of the funnel portion 13b of the feeding portion 13. Is connected.

  As a result, as shown in FIGS. 4 and 6, the front frame 42 is positioned in front of the feeding portion 13 and is arranged in the left-right direction, and the rear frame 40 is positioned behind the feeding portion 13 and It is in the state arranged in the direction.

  As shown in FIGS. 1 and 2, right and left frames 34 are provided outside the right and left lateral sides of the rear step 33, and the frames 35 and 46 extend over the right and left frames 34. Are connected. The frame 35 is located on the front side of the storage section 12, the frame 46 is located on the front side of the supply duct 27, and the frames 35 and 46 have a function of protecting the storage section 12 and the front side of the supply duct 27.

  As shown in FIGS. 1 and 2, a frame 36 is connected to a left portion of the frame 35, a top plate 36 a is connected to an upper portion of the frame 36, and the frame 36 (top plate 36 a) is connected to the blower 14 and the electric motor 25. Is located on the upper side and the front side. Thus, the frame 36 (top plate 36a) has a function of protecting the upper side and the front side of the blower 14 and the electric motor 25.

[4]
Next, the structure of the feeding section 13 in the fertilizer applicator 11 will be described.
As shown in FIGS. 8, 9, and 11, in the eight feeding portions 13, two feeding portions 13 are provided adjacent to each other, and a case of the two feeding portions 13 is integrally formed.

  As shown in FIGS. 8 and 11, a funnel portion 13b is provided below the payout portion 13, and a suction portion 13a is provided in front of the funnel portion 13b. The funnel portion 13b of the feeding portion 13 is connected to the feeding portion 13 by a connecting member 47. By removing the connecting member 47, the funnel portion 13b of the feeding portion 13 can be removed from the feeding portion 13.

  As shown in FIGS. 8, 9 and 11, a rotating body 48 for feeding out the fertilizer from the storage section 12 and supplying the fertilizer to the funnel section 13b of the feeding section 13 is provided inside the feeding section 13. It has a cylindrical shape with a plurality of recesses in the part. The rotating body 48 is connected to the drive shaft 49 so as to rotate integrally therewith, and bearing portions 50 and 51 are attached to both ends of the drive shaft 49.

  As shown in FIGS. 8, 9, and 11, a brush 52 that comes into contact with the outer peripheral portion of the rotating body 48 is provided inside the feeding portion 13. As the rotating body 48 rotates, fertilizer is placed in the concave portion of the rotating body 48. When the brush enters, the fertilizer corresponding to the volume of the concave portion of the rotating body 48 is supplied to the funnel portion 13 b of the feeding portion 13 by the sliding action of the brush 52. The brush 52 is provided on the base 52a, and the handle 52b is provided on the base 52a.

  With the above-described configuration, in the eight feeding portions 13, the case where the two feeding portions 13 are integrated, the funnel portion 13b, the rotating body 48, the drive shaft 49, the bearing portions 50 and 51, the brush 52, and the like are the same. And is a common component of the eight feeding portions 13.

  When the storage section 12 is moved to the non-working position A2 as described in [5] to be described later, as shown in FIGS. 9 and 11, the upper portion of the feeding section 13 is opened, and the rotating body 48 and the drive The shaft 49 and the bearing portions 50 and 51 can be integrally attached (removable) from the upper portion of the feeding portion 13. Similarly, the brush 52 (the base 52a and the handle 52b) can be attached (removable) from the upper portion of the feeding portion 13.

  As shown in FIGS. 9, 10, and 11, the bearing unit 50 is provided with a handle 50a. The bearing 51 is provided with an engaging portion 51a for fixing, and the engaging portion 51a is slidable in a direction perpendicular to the drive shaft 49 and is urged to the protruding side (outside) to operate the engaging portion 51a. Projection 51b is provided.

  The state shown on the left side of FIGS. 9, 10 and 11 is a state in which the rotating body 48, the drive shaft 49, the bearing parts 50 and 51, and the brush 52 (the base 52 a and the handle 52 b) are attached to the feeding part 13. The engaging portion 51a of the bearing portion 51 projects outward and engages with the inner surface of the feeding portion 13.

  In the state shown on the left side of FIGS. 9, 10 and 11, the bearing 50 is attached to the left and right central portions of the feeding portion 13, and the bearings 51 are attached to the right and left portions of the feeding portion 13. The drive gear 49a at the end and the protrusion 51b of the bearing 51 protrude outside the feeding portion 13.

  In the state shown on the left side of FIGS. 9, 10 and 11, first, the user holds the handle 52b of the brush 52 and removes the brush 52 by pulling it upward. Next, by operating the convex portions 51b of the bearing portion 51 so as to approach each other, the engaging portion 51a of the bearing portion 51 is separated from the inner surface of the feed-out portion 13, and the holding portion 50a of the bearing portion 50 is held. The parts 50 and 51 are removed by pulling them upward. Thereby, the rotating body 48 and the drive shaft 49 are removed integrally with the bearings 50 and 51 (see the right side in FIG. 11).

[5]
Next, the support structure of the storage unit 12 in the fertilizer application device 11 will be described (part 1).
As shown in FIGS. 2, 3, and 4, in the eight feeding portions 13, two feeding portions 13 are provided adjacent to each other (connected), and the upper portion of the right four feeding portions 13 is provided. The lower part of the right storage part 12 is connected to the lower part of the four storage parts 13, and the lower part of the left storage part 12 is connected to the upper part of the four left feeding parts 13.

  As shown in FIGS. 5 and 6, a first frame 61 disposed in the left and right direction is provided, and a second frame 62 is connected to right and left portions and a left and right center portion of the first frame 61 to form a second frame 61. 62 are arranged in the front-back direction. The third frame 63 is connected over the extended portion of the second frame 62, and the third frame 63 is arranged in the left-right direction.

  As shown in FIGS. 5 and 6, the first frame 61, the second frame 62, the third frame 63, and the like constitute a storage frame 53 (corresponding to a moving mechanism). The lower part of the storage part 12 is connected to the second frame 62, and the storage part 12 is supported by the storage part frame 53. The first frame 61 is disposed on the rear side of the storage part 12 in the left-right direction. The third frame 63 is arranged in the left and right direction on the front side of the storage unit 12, and the second frame 62 is arranged in the front and rear direction on the lateral side of the storage unit 12.

  As shown in FIGS. 5 and 6, in the storage section frame 53, a fulcrum member 61 a is connected to the first frame 61, and as shown in FIGS. The fulcrum member 40a is connected.

  As shown in FIGS. 6 and 7, the fulcrum member 61a of the first frame 61 is supported swingably up and down around the horizontal axis P1 of the fulcrum member 40a of the rear frame 40 in the left-right direction. The frame 53 is supported in a vertically swingable manner around the horizontal axis P1 on the rear side of the feeding portion 13.

  As a result, as shown in FIGS. 6 and 7, the storage portion frame 53 is swung up and down around the horizontal axis P <b> 1, whereby the lower portion of the storage portion 12 is connected to the upper portion of the feeding portion 13 at the work position A <b> 1. And the lower part of the storage part 12 is separated from the upper part of the feeding part 13, and the storage part 12 is moved from the feeding part 13 to the non-working position A <b> 2 separated from the feeding part 13 to the upper side and the rear side. it can.

[6]
Next, the support structure of the storage unit 12 in the fertilizer application device 11 will be described (part 2).
As shown in FIGS. 5, 6, and 7, in the storage unit frame 53, since the third frame 63 is located on the front side of the storage unit 12, the third frame 63 moves the storage unit 12 to the working position A <b> 1 and the non-working position. It is a handle portion for manually moving over the position A2.
In this case, a dedicated handle (not shown) may be connected to the third frame 63.

  As shown in FIG. As shown in FIGS. 2, 6, and 7, in the feeding portion frame 44, a bracket 54 is connected to a position of the front frame 42 corresponding to the fixing tool 63 a of the third frame 63, and the bracket 54 is provided with a buckle member 55. ing.

As a result, as shown in FIGS. 2 and 6, the buckle member 55 is hung on the fixture 63 a of the third frame 63 in a state where the storage unit 12 is located at the operation position A 1, so that the storage unit 12 is moved to the operation position. It can be fixed at A1.
In this case, the buckle member 55 may be provided on the third frame 63, and the fixture 63a may be connected to the bracket 54.

  As shown in FIGS. 6 and 7, in the storage section frame 53, a support member 56 is supported at the front part of the second frame 62 at the left and right center part so as to be swingable back and forth. In the feeding portion frame 44, a long hole 43a extending in the front-rear direction is opened in the intermediate frame 43 corresponding to the support member 56, and a horizontal pin 56a below the support member 56 is connected to the long hole 43a of the intermediate frame 43. Has been inserted.

  As shown in FIG. 6, when the storage unit 12 is positioned at the working position A <b> 1, the support member 56 is in a state of being inclined, and the pin 56 a of the support member 56 is located at the rear end of the long hole 43 a of the intermediate frame 43. are doing.

  As shown in FIGS. 6 and 7, when the storage unit 12 is moved to the non-working position A <b> 2, the support member 56 rises, and the pin 56 a of the support member 56 moves forward along the long hole 43 a of the intermediate frame 43. Go to When the storage section 12 is moved to the non-working position A2, the support member 56 stands up, and the pin 56a of the support member 56 enters and is held in the recess at the front end of the long hole 43a of the intermediate frame 43.

  As a result, as shown in FIG. 7, the storage member 12 can be supported (held) at the non-working position A2 by the support member 56 so as not to move to the work position A1, and the storage portion 12 can be moved to the non-working position. The state of further moving rearward from A2 is prevented.

[7]
Next, the structure of the storage unit 12 in the fertilizer application device 11 will be described.
As shown in FIGS. 2, 3, and 6, the storage unit 12 is made of a translucent synthetic resin, and a lid 12 a that can be opened and closed around a horizontal axis P2 in the left and right direction at the rear of the upper portion of the storage unit 12. Provided. As illustrated in FIG. 6, in a state where the storage unit 12 is located at the work position A1, the rear portion 12R of the storage unit 12 projects rearward beyond the upper side of the horizontal axis P1 in a side view.

  As shown in FIGS. 3, 5, 8, and 13, since the storage unit 12 is connected over the upper portions of the four feeding units 13, the lower part of the storage unit 12 corresponds to two adjacent feeding units 13. A connecting portion 57 is provided, and a connecting portion 57 corresponding to another two adjacent feeding portions 13 is provided. The two connecting portions 57 are provided at a lower portion of the storage portion 12.

  Thereby, as shown in FIG. 6 and FIG. 13, at the working position A <b> 1 of the storage unit 12, the connection unit 57 of the storage unit 12 is connected to the upper part of the feeding unit 13. As shown in FIG. 7, at the non-working position A <b> 2 of the storage unit 12, the connection unit 57 of the storage unit 12 is separated from the upper part of the feeding unit 13, and the storage unit 12 is separated from the feeding unit 13 upward and rearward.

  As shown in FIGS. 6, 8, and 13, when the storage unit 12 is moved to the work position A1 (when the connection unit 57 of the storage unit 12 is connected to the upper portion of the delivery unit 13), the connection unit in the delivery unit 13 is connected. 57, the bearings 50, 51 and the brush 52 (the base 52a and the handle 52b) are pressed, and the bearings 50, 51 and the brush 52 (the base 52a and the handle 52b) are moved to the feeding portion 13. Stably supported (held).

  As shown in FIGS. 8 and 12, the connecting portion 57 is formed in a rectangular shape in plan view so as to cover the upper portions of the two feeding portions 13. The seal member 58 made of is attached. A plurality of openings 57a having a rectangular shape in a plan view and a plurality of partition portions 57b having a triangular shape in a cross-sectional view are alternately arranged at portions of the connecting portion 57 corresponding to the two extending portions 13 (the rotating bodies 48). Have been.

  As shown in FIGS. 8 and 12, two flat opening / closing portions 59 are provided corresponding to the two feeding portions 13, and the opening portions 59 a having the same shape as the opening portions 57 a of the connecting portions 57 are provided. Are provided in the opening / closing section 59 at the same pitch as the opening 57a of the connecting section 57. An opening / closing portion 59 is disposed below the opening 57a of the connecting portion 57, and the opening / closing portion 59 is slidably supported in the longitudinal direction by a guide member 60 attached to a lower portion of the connecting portion 57. The handle 59 b of the opening / closing section 59 is located at the front of the storage section 12.

  The state shown on the lower side of FIG. 12 is a state in which the handle 59b of the opening / closing section 59 is pulled from the connecting section 57 and the opening / closing section 59 is operated to the open position. The opening 59a of the opening / closing portion 59 coincides with the opening 59a.

  Thereby, when the opening / closing part 59 is operated to the open position, the lower part (connection part 57) of the storage part 12 is opened, and the fertilizer of the storage part 12 is connected to the connection part 57 and the opening part 57a of the opening / closing part 59. , 59a, and enters the feeding section 13. In the planting operation state described in [2], the opening / closing section 59 is operated to the open position.

As shown in the upper part of FIGS. 8 and 12, when the handle 59 b of the opening / closing part 59 is pushed to the connecting part 57 and the opening / closing part 59 is operated to the closed position, the opening 59 a of the opening / closing part 59 is connected. The opening 57a of the connecting part 57 is closed by the opening / closing part 59 by moving to the lower side of the partition part 57b of 57. As a result, the lower part (connection part 57) of the storage part 12 is closed, and the fertilizer is stopped from flowing out from the lower part of the storage part 12.
As described in the preceding section [5], when the storage unit 12 is moved to the non-working position A2, the opening / closing unit 59 is operated to the closed position.

[8]
Next, a transmission system to the fertilizer application device 11 will be described.
As shown in FIG. 1, the power of the engine 17 is transmitted from a hydrostatic continuously variable transmission (not shown) for traveling and a fertilizing clutch (not shown) provided in the transmission case 18 to a lower part of the fuselage. The power is transmitted to a transmission shaft 21 arranged in the front-rear direction.

As shown in FIGS. 1 and 14, a transmission shaft 22 is rotatably supported along the left and right sides of the right rear portion of the fertilizer application device 11, and an arm 21 a connected to a rear portion of the transmission shaft 21 and a transmission shaft 22. A linking rod 23 is connected to an arm 22a connected to the left portion of the arm.
Thereby, the rotational power of the transmission shaft 21 is converted into vertical reciprocating power by the arm 21a of the transmission shaft 21 and the link rod 23, and transmitted to the transmission shaft 22 as reciprocating rotary power within a predetermined angle range by the link rod 23. You.

  As shown in FIGS. 3 and 14, in the feeding section frame 44, the supply amount changing device 24 is provided on the right horizontal frame 41, and the right portion of the transmission shaft 22 is connected to the supply amount changing device 24. . As shown in FIGS. 6, 7, 13, and 14, a driving shaft 37 is rotatably supported along the left-right direction of the rear portion of the feeding portion 13, and the right portion of the driving shaft 37 is connected to the supply amount changing device 24. It is connected.

As shown in FIGS. 6, 7, 13, and 14, the drive gear 37a is rotatably attached to the drive shaft 37, and the drive gear 37a engages with the drive gear 49a of the drive shaft 49 (see the preceding item [4]). are doing. The shift member 37b is rotatably and slidably attached to the drive shaft 37, and is configured to be slidable in an operating position where the shift member 37b engages with the drive gear 37a and a stop position separated from the drive gear 37a. The shift member 37b is urged to an operating position on the occlusal side with the drive gear 37a by a not shown).
Thus, the drive gear 37a and the shift member 37b form a fertilizing clutch that can operate one feeding unit 13 in an operating state and a stopped state.

  With the above structure, as shown in FIG. 14, the rotational power of the transmission shaft 21 is converted into upper and lower reciprocating rotational power by the arm 21a of the transmission shaft 21 and the linking rod 23 and transmitted to the transmission shaft 22. The reciprocating rotational power 22 is converted into rotational power in one direction by the supply amount changing device 24 and transmitted to the drive shaft 37.

  As shown in FIG. 14, the rotation speed of the drive shaft 37 can be manually changed in the supply amount changing device 24, the power of the drive shaft 37 is transmitted from the drive gear 37a to the drive gear 49a of the drive shaft 49, and 48 is driven to rotate, so that the fertilizer is fed from the feeding section 13.

[9]
Next, the operation system of the fertilizer application clutch will be described (part 1).
As shown in FIGS. 3 and 4, an operation shaft 64 is rotatably supported in parallel with the drive shaft 37, and a cam member 64a is connected to a portion of the operation shaft 64 facing the shift member 37b of the drive shaft 37. ing.

  As shown in FIGS. 3 and 14, an electric motor 65 that rotationally drives the operation shaft 64 is provided on the right horizontal frame 41, and the electric motor 65 operates based on an operation command. When the operation shaft 64 is driven to rotate, the shift member 37b of the drive shaft 37 is operated by the cam member 64a of the operation shaft 64 away from the drive gear 37a, so that the feeding portion 13 is stopped (the fertilizer application clutch). Stop position).

  As shown in FIG. 14, in the eight feeding portions 13, since the two feeding portions 13 are provided adjacent to each other (by being connected), from the left in the traveling direction of the aircraft, It is assumed that the first two feeding units 13, the second two feeding units 13.3, the second two feeding units 13, and the fourth two feeding units 13 are set.

  The state shown in FIGS. 3 and 14 is a state in which all the cam members 64a of the operation shaft 64 are separated from all the shift members 37b of the drive shaft 37, and all the shift members 37b of the drive shaft 37 are engaged with the drive gear 37a. This is the operating state of the first to fourth two feeding portions 13 (operating position of the fertilizing clutch).

  In the operating state of the first to fourth two feeding portions 13 (eight feeding portions 13), as shown in FIG. 14, each time the operating shaft 64 is rotationally driven by a predetermined angle in one direction, the first position. , The stopped state of the first and second two feeding sections 13 (the stopped state of the four feeding sections 13), the first, second, and third two feeding sections 13 (The stopped state of the six feeding sections 13) and the stopped state of the first, second, third and fourth two feeding sections 13 (the stopped state of the eight feeding sections 13).

  In the operating state of the first to fourth two feeding portions 13 (eight feeding portions 13), as shown in FIG. 14, every time the operation shaft 64 is rotationally driven in the opposite direction by a predetermined angle, the fourth rotation is performed. The two feeding parts 13 are stopped, the fourth and third two feeding parts 13 are stopped (the four feeding parts 13 are stopped), the fourth, third and second two feeding parts 13 are stopped. (The stopped state of the six feeding sections 13), the stopped state of the fourth, third, second and first two feeding sections 13 (the stopped state of the eight feeding sections 13) can be obtained.

[10]
Next, the operation system of the fertilizer application clutch will be described (part 2).
As shown in FIGS. 4 and 14, in the feeding portion frame 44, the bracket 43 b is connected to the intermediate frame 43, and the bracket 66 is connected to the right portion of the rear frame 40. Eight operation levers 67 made of a spring wire are connected to the bracket 43b and the bracket 66 of the intermediate frame 43, and the eight operation levers 67 extend below the front frame 42 and extend forward. I have.

  As shown in FIGS. 3 and 14, each of the eight operation levers 67 is located near the upper side of the shift member 37 b of the drive shaft 37 in each of the eight feeding portions 13. In a state where no operation is performed (an operation position of the operation lever 67), the shift member 37b of the drive shaft 37 is engaged with the drive gear 37a (an operation state of the feeding portion 13).

  As described in the above item [9], even if the shift member 37b of the drive shaft 37 is operated by the cam member 64a of the operation shaft 64 away from the drive gear 37a (the feeding portion 13 is stopped), the drive shaft 37 is not moved. Of the drive shaft 37 by the cam member 64a of the operation shaft 64 does not hinder operation of the shift member 37b.

  As shown in FIGS. 3 and 14, the shift member 37 b of the drive shaft 37 can be operated by the operation lever 67 away from the drive gear 37 a while elastically deforming the operation lever 67. The shift member 37b of the drive shaft 37 can be held in a state in which the shift member 37b of the drive shaft 37 is operated away from the drive gear 37a by holding the engagement member (not shown) of the front frame 42 (the stop position of the operation lever 67). (Stopping state of the feeding section 13) (stop position of the fertilizer application clutch).

  As described above, in a state where the shift member 37b of the drive shaft 37 is operated and held by the operation lever 67 to the side away from the drive gear 37a, even if the operation shaft 64 is rotationally driven as described above, Only when the cam member 64a idles without contacting the shift member 37b of the drive shaft 37, there is no problem in a state where the shift member 37b of the drive shaft 37 is operated and held by the operation lever 67 away from the drive gear 37a. .

  As shown in FIGS. 3 and 14, since the operation lever 67 is provided for each of the eight feeding portions 13, each of the eight feeding portions 13 is independently stopped by the operation lever 67. Can be operated.

[11]
Next, a configuration for collecting fertilizer remaining in the storage unit 12 after the planting operation is completed will be described.
As shown in FIGS. 3, 13, and 15, the discharge duct 29 extends rearward from the branch portion 26, and the rear side of the payout portion 13 is disposed in the left-right direction. And the discharge duct 29 is connected to and supported by the extending portion of the frame 45. The discharge portion 13c extends from the rear portion of the feeding portion 13, and the discharge portion 13c is connected to the discharge duct 29.

  As shown in FIG. 13, the discharge duct 29 is disposed below the funnel portion 13 b of the supply portion 13 and the hose 16 in a side view, and is disposed behind the funnel portion 13 b of the supply portion 13. (The funnel part 13b of the feeding part 13 is disposed on the front side of the discharge duct 29).

  As shown in FIG. 15, a shutter 26 a for switching the conveying air of the blower 14 is provided in the branch portion 26. As shown in FIGS. 8, 9, and 15, a shutter 13d that can open and close the discharge section 13c of the feeding section 13 is provided.

  As shown in FIGS. 2, 4, and 15, in the feeding portion frame 44, the switching lever 68 is supported by the right horizontal frame 41 so as to be vertically swingable, and a lever guide 69 that guides the switching lever 68 is provided. ing. An operation shaft 70 connected to the switching lever 68 is disposed along the front side of the front frame 42 along the left-right direction, and a link 71 extends between the extended portion of the operation shaft 70 and the shutter 26 a of the branch portion 26. Are connected, and a link 72 is connected between the intermediate portion of the operation shaft 70 and the shutter 13 d of the feeding portion 13.

  The state shown in FIG. 15 is a state in which the switching lever 68 is operated to the supply position, and the operation shaft 70 and the link 71 operate the shutter 26a of the branch portion 26 to the position where the shutter 26a closes the entrance of the discharge duct 29 (blower 14). And the supply duct 27 are connected), and the shutter 13d of the feeding portion 13 is operated to the closed position by the operation shaft 70 and the link 72 (see FIG. 8).

  In the state where the switching lever 68 is operated to the supply position, as described in [2] above, the conveying wind of the blower 14 is supplied to the feeding unit 13 through the supply duct 27, and the fertilizer is supplied from the storage unit 12 by a predetermined amount. The fertilizer is fed out by the feeding unit 13 and the fertilizer is supplied to the groove generator 15 through the hose 16 by the wind blown by the blower 14. The fertilizer is supplied to the groove formed on the rice field by the groove generator 15. 15.

When collecting the fertilizer remaining in the storage unit 12 after the planting operation is completed, the switching lever 68 is operated to the discharging position as shown in FIG.
When the switching lever 68 is operated to the discharge position, the operation shaft 70 and the link 71 move the shutter 26a of the branch portion 26 to a position where the shutter 26a closes the inlet of the supply duct 27 (the state in which the blower 14 and the discharge duct 29 are connected). ), The operating shaft 70 and the link 72 move the shutter 13d of the feeding portion 13 to the open position.

  By operating all the opening / closing portions 59 to the open position in the state where the switching lever 68 is operated to the discharge position (see the preceding section [7]), the fertilizer in the storage portion 12 is fed out as shown in FIGS. The air blows from the blower 14 is supplied to the discharge duct 29, and the fertilizer that has flowed out of the discharge duct 29 is sent to the discharge duct 29 and discharged from the discharge port 29 a of the discharge duct 29. Collected.

[First Embodiment of the Invention]
In the above-mentioned [Embodiment for Carrying Out the Invention], the rear part of the link mechanism 3 may be configured to support the seedling planting device 5 and the fertilizer application device 11 in a vertically movable manner.

  In the above-described configuration, the rear portion (first frame 61) of the storage section frame 53 is swingably supported around the horizontal axis P1 of the rear frame 40 in the feeding section frame 44, and the storage section 12 is moved from the feeding section 13 What is necessary is just to comprise so that it may be moved to the non-working position A2 separated to the upper side and the rear side.

  Conversely, in the above-described configuration, the front portion (the third frame 63) of the storage portion frame 53 is swingably supported around the horizontal axis P1 of the front frame 42 in the feeding portion frame 44, and the storage portion 12 is fed out. You may comprise so that it may move to the non-working position A2 separated from the part 13 to the upper side and the front side.

[Second Alternative Embodiment of the Invention]
In the above-mentioned [Embodiment for carrying out the invention] and [First embodiment of the invention], the rear part or the front part of the storage part frame 53 is not provided with the delivery part frame 44 supporting the delivery part 13 but with the body (link). It may be swingably supported around a horizontal axis P1 of another support frame (not shown) provided in the mechanism 3) and arranged on the front side or the rear side of the feeding section 13.

[Third Alternative Embodiment of the Invention]
In the above-mentioned [Embodiment for carrying out the invention] [First embodiment of the invention] [Second embodiment of the invention], the storage unit 12 is swung about the horizontal axis P1 by the storage unit frame 53. Instead of being freely supported, the storage section 12 is supported by a four-link mechanism (not shown) (corresponding to a moving mechanism) so as to be movable up and down in parallel, to be movable in parallel back and forth, and to be parallel. May be supported so as to be movable left and right.

  As described above, when the storage unit 12 is supported so as to be movable back and forth, the rear part of the lower part of the storage part 12 is configured to be connected to the front part of the feeding part 13, and the rear part of the lower part of the storage part 12 is drawn out. A working position A1 connected to the front of the section 13 and a non-working position A2 in which the rear of the lower portion of the storage section 12 is separated from the front of the feeding section 13 and the storage section 12 is separated from the feeding section 13 to the front side. May be configured to be freely movable.

  As described above, when the storage unit 12 is supported so as to be movable back and forth, the lower front part of the storage unit 12 is configured to be connected to the rear part of the feeding unit 13, and the lower front part of the storage unit 12 is connected. A working position A1 connected to the rear part of the feeding part 13; and a non-working position in which the lower front part of the storage part 12 is separated from the rear part of the feeding part 13 and the storage part 12 is separated from the feeding part 13 to the rear side. A2 may be configured to be movable.

[Fourth Embodiment of the Invention]
In the aforementioned [Embodiment for carrying out the invention] [First variant of the invention] to [Third variant of the invention], when the storage unit 12 is moved to the non-working position A2, the rotating body 48 is rotated. , The drive shaft 49 and the bearing portions 50 and 51 may be configured so that they can be detached from the feeding portion 13 separately and independently, not integrally.

  In the aforementioned [Embodiment for carrying out the invention] [First variant of the invention] to [Third variant of the invention], when the storage unit 12 is moved to the non-working position A2, the rotating body 48 is rotated. May be detached from the feeding portion 13, and the drive shaft 49 and the bearing portions 50 and 51 may be configured to remain in the feeding portion 13 (the rotating body 48 and the drive shaft 49 can be removed from the feeding portion 13. Thus, the bearing portions 50 and 51 may be configured to remain in the feeding portion 13).

[Fifth Alternative Embodiment of the Invention]
In the above-mentioned [Embodiment for carrying out the invention] [First embodiment of the invention] to [Fourth embodiment of the invention], the right storage unit 12 and the left storage unit 12 are separately set to the working positions. Instead of moving to the A1 and the non-working position A2, all the storage units 12 may be integrally moved to the working position A1 and the non-working position A2.

  In the above-mentioned [Embodiment for carrying out the invention] [First embodiment of the invention] to [Fourth embodiment of the invention], each of the feeding sections 13 is provided with an independent storage section 12 (for example, When eight feeding portions 13 are provided, eight small storing portions 12 are provided), and one storing portion 12 corresponding to one feeding portion 13 is independently moved to the working position A1 and the non-working position A2. You may be comprised so that it may be performed.

[Sixth alternative embodiment of the invention]
Instead of the fertilizer 11, a drug supply device (reservoir and feed-out unit) (not shown) that supplies a drug to the rice field as agricultural granules or a seeding device that supplies seeds to the rice field as agricultural granules ( Regarding the storage part and the feeding part) (not shown), the above-described [Embodiments for carrying out the invention] [First alternative embodiment of the invention] to [Fifth alternative embodiment of the invention] A configuration may be applied.

  The present invention provides not only a fertilizer, but also a drug supply device (reservoir and feed-out unit) for supplying a drug to a rice field as agricultural granules, and a sowing device (storage) for supplying seeds to a rice field as agricultural granules. Section and the feeding section) can be applied to a paddy field working vehicle such as a riding type rice transplanter or a riding type direct sowing machine.

Reference Signs List 12 storage unit 13 feeding unit 48 rotating body 50, 51 bearing unit 53 moving mechanism 59 opening / closing unit A1 working position A2 non-working position P1 horizontal axis center

Claims (5)

A storage unit that stores the powder and granules, and a feeding unit that is connected to the storage unit and feeds the powder and granules from the storage unit and supplies the powder to the rice field, is provided.
The storage unit is separable from the payout unit,
A movement mechanism that movably supports the storage unit is provided between a working position where the storage unit is connected to the feeding unit and a non-working position where the storage unit is separated from the feeding unit and separated. And
The storage unit is provided with an open / close unit operable between an open position that allows the particulates to enter the payout unit from the storage unit and a closed position that stops the particulates from exiting the storage unit. ,
A case in which the feeding section is connected to the storage section when the storage section is set to the working position, and is opened upward by separating from the storage section when the storage section is moved to the non-working position. A bearing portion that is held by the case by being inserted from the upper side to the lower side with respect to the case, a drive shaft rotatably supported by the bearing portion, and the drive shaft. And a rotating body that integrally rotates, and a drive gear is provided outside the case among the drive shafts,
With the storage portion in the non-working position, by pulling the bearing portion upward from the case, the drive shaft, the rotating body, and the drive gear can be integrally removed from the case. Paddy field work vehicle possible . The moving mechanism supports the storage unit, and has a second frame in a front-rear direction that is swingably supported around a fulcrum in a left-right posture at a rear end,
A support member is swingably supported back and forth with respect to a front portion of the second frame, and a pin at a swing end of the support member is inserted into an intermediate frame constituting a payout frame supporting the payout portion. A long hole is formed along the front-back direction,
By the second frame swinging about the fulcrum, the storage unit becomes movable between the working position and the non-working position, and the storage unit is moved to the non-working position. 2. The paddy working vehicle according to claim 1, wherein the support member stands up, and a recess into which the pin fits in the upright state is formed in the elongated hole . 3. A plurality of the payout portions are provided adjacent to each other, and the common storage portion is provided over a plurality of the payout portions,
A plurality of the opening portions corresponding to a plurality of the feeding portions, paddy work vehicle according to claim 1 or 2 is provided in the reservoir. The paddy field working vehicle according to any one of claims 1 to 3 , wherein an upper part of the delivery part and a lower part of the storage part are freely connected and separated. The feeding unit is provided at a rear portion of the fuselage,
The working position in which the lower part of the storage part is connected to the upper part of the feeding part, and the lower part of the storage part is separated from the upper part of the feeding part and the storage part is separated upward and rearward from the feeding part. 5. The paddy field working vehicle according to claim 4 , wherein, over the non-working position, the storage unit is swingably supported by the moving mechanism around a horizontal axis in the left-right direction on the rear side of the feeding unit.

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