JP2013132235A - Paddy field working machine - Google Patents

Abstract

An object of the present invention is to make it possible to easily take out the sprinkled matter remaining in two spraying devices disposed close to each other from the front and back from each spraying device.
In a paddy field work machine in which two spraying devices 9 and 10 mounted on a traveling vehicle body are arranged close to each other, a maintenance section 55D that enables discharge of sprayed matter remaining on a front spraying device 10 to the outside is provided. A maintenance unit 48D that is provided on the front side of the front spraying device 10 and that allows the sprayed material remaining in the rear spraying device 9 to be discharged to the outside is provided on the rear side of the rear spraying device 9.
[Selection] Figure 3

Description

  The present invention relates to a paddy field work machine in which two spraying devices mounted on a traveling vehicle body are arranged close to each other in the front-rear direction.

  As a paddy field machine as described above, there is one in which a direct sowing apparatus and a fertilizer application apparatus, which are an example of a spraying apparatus, are arranged close to each other in a state where the direct sowing apparatus is located on the rear side. And, regardless of the arrangement of the direct sowing apparatus and the fertilizer application, a maintenance unit is provided on the rear side of the direct sowing apparatus that enables the discharge of the seed seeds that are the sprayed material remaining in the direct sowing apparatus, and remains in the fertilizer application apparatus. The maintenance part which enables discharge | emission of the fertilizer which is sprinkled material to the exterior was comprised so that it might provide in the rear side of a fertilizer application apparatus (for example, refer patent document 1).

Japanese Patent Laid-Open No. 9-285206 (refer to FIGS. 1, 2, 6, and 7)

  In said structure, taking out from the direct sowing apparatus of the seed seed | residue which remains in the direct seeding apparatus of a back side can be easily performed using the maintenance part provided in the back side of the direct sowing apparatus from the wide space behind a direct sowing apparatus. .

  However, removal of the fertilizer remaining in the front fertilizer from the fertilizer is performed using a maintenance section provided on the rear side of the fertilizer from a narrow space between the direct sowing device and the fertilizer close to the front and rear. Therefore, it takes time to take out the fertilizer remaining in the fertilizer from the fertilizer.

  An object of the present invention is to make it possible to easily take out the sprinkled matter remaining in two spraying devices arranged close to each other from the front and back from each spraying device.

The invention according to claim 1 of the present invention is a paddy field work machine in which two spraying devices mounted on a traveling vehicle body are arranged close to each other in the front and rear directions.
A maintenance section is provided on the front side of the front side spraying device to allow the sprayed material remaining on the front side spraying device to be discharged to the outside so that the sprayed material remaining on the rear side spraying device can be discharged to the outside. A maintenance section was provided on the rear side of the rear spraying device.

  In the above invention, the spatter remaining in the front spraying device from the spraying device can be easily removed from the wide space in front of the spraying device using the maintenance section provided on the front side of the spraying device. Can do.

  In addition, it is possible to easily take out the spatter remaining in the rear spraying device from the spraying device from a wide space behind the spraying device using a maintenance section provided on the rear side of the spraying device. it can.

  Therefore, it is possible to easily take out the sprinkled matter remaining in the two spraying devices disposed close to each other from the front and back from each spraying device.

The invention according to claim 2 of the present invention is the invention according to claim 1,
Equipped with a grooving device that forms a groove for burying the sprinkling material in one of the front and rear spraying devices, and in the mud that sprays the sprinkling material into the mud through the one sprinkling device. It is configured to spray specification, and the other spraying device of the front and rear spraying devices is configured to surface spraying specification to spray the sprinkled material on the mud surface,
The grooving device is arranged at a position on the front side of the vehicle body from the spraying position of the sprayed material by the other spraying device.

  In the above-mentioned invention, the spraying of the sprayed material in the mud using the grooving device by the spraying device of the mud spraying specification can be performed prior to the surface spraying of the sprayed material by the spraying device of the surface spraying specification. As a result, by spraying in the mud using a grooving device after spraying the surface, the sprinkled material sprayed on the mud surface in the field flows into the mud by spraying in the mud using the subsequent grooving device. Can be prevented.

  This is suitable for the application of iron coating soot that may cause germination failure due to oxygen deficiency by applying iron coating for bird damage countermeasures. Specifically, if iron-coated soot and the like are stored in a spraying device with a surface spraying specification and fertilizer or chemicals are stored in a spraying device with a spraying specification in mud, spraying in the mud using a grooving device is possible. After a fertilizer or a chemical agent is sprayed in the mud of the field, an iron-coated paddle or the like can be properly sprayed on the mud surface of the field by surface spraying. As a result, it is possible to prevent the possibility that the iron-coated soot is buried in the mud and falls into oxygen deficiency.

  Therefore, both the spraying of the sprayed material in the mud and the surface spraying can be performed satisfactorily.

The invention according to claim 3 of the present invention is the invention according to claim 2,
Deploying a cover plate to cover the sprinkled material distributed in the groove behind the groove producing device,
The earth covering plate was arranged at a position on the front side of the vehicle body with respect to the sprayed position of the sprayed material by the spraying device of the surface spraying specification.

  In said invention, the soil covering by the soil covering board can be performed with respect to the sprayed material sprayed in the mud of the field by the spraying device of the mud spraying specification. Thereby, even if the sprayed material sprayed in the mud in the field has a low specific gravity and easily floats, the sprayed material can be surely buried in the mud in the field.

  And the surface dispersion | spreading of the sprinkling material by the dispersion | spreading apparatus of a surface dispersion | spreading specification will be performed with respect to the mud surface of the farm field after covering with a covering board. As a result, it is possible to reliably avoid the possibility that the sprayed material sprayed on the mud surface of the field flows into the groove marks after spraying in the mud, and the sprayed material can be reliably sprayed to the appropriate position on the mud surface of the field. .

  Therefore, both the spraying of the sprayed material in the mud and the surface spraying can be performed better.

The invention according to claim 4 of the present invention is the invention according to claim 2,
Equipped with a leveling float to level the mud surface,
The grooving device was disposed on the front side of the leveling float, and the spraying position of the spatter by the spraying device of the surface spraying specification was set behind the leveling float.

  In the above-described invention, it is possible to apply the soil covering accompanying the leveling action of the leveling float to the sprayed material sprayed in the mud of the field by the spraying device of the mud spraying specification. Thereby, even if the sprayed material sprayed in the mud in the field has a low specific gravity and easily floats, the sprayed material can be surely buried in the mud in the field.

  And the surface dispersion | spreading of the sprinkling material by the dispersion apparatus of a surface dispersion | spreading specification is performed with respect to the mud surface of the farm field after leveling with the leveling float. As a result, it is possible to reliably avoid the possibility that the sprayed material sprayed on the mud surface of the field flows into the groove marks after spraying in the mud, and the sprayed material can be reliably sprayed to the appropriate position on the mud surface of the field. .

  Therefore, both the spraying of the sprayed material in the mud and the surface spraying can be performed better.

It is the whole left side view of a paddy field machine. It is a whole top view of a paddy field machine. It is a left view of a working part. It is a cross-sectional top view in the upper part side of a working part. It is a cross-sectional top view in the lower part side of a working part. It is a rear view of a working part. It is a vertical left view of the principal part of a sowing apparatus. It is the vertical left side view of the principal part in the residual seed potato discharge state of a sowing device. It is a vertical left view of the principal part of a fertilizer applicator. It is a left view of the operation | work part which shows another embodiment which deployed the groover in the front side of the leveling float. It is a top view of the principal part which shows another embodiment which formed the earth covering board independently. It is the vertical left side view of the principal part which shows another embodiment which formed the earth covering board independently.

  Hereinafter, as an example of an embodiment for carrying out the present invention, an embodiment in which the present invention is applied to a riding direct sowing machine that is an example of a paddy field work machine will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the riding direct sowing machine exemplified in the present embodiment is provided with a traveling vehicle body 3 having a pair of left and right front wheels 1 and a pair of left and right rear wheels 2, and a driver seat 4 at the rear thereof. Thus, it is configured as a riding type, and a link mechanism 5 is provided at the rear end portion of the traveling vehicle body 3 so as to be movable up and down, and a working portion A is connected to the free end portion of the link mechanism 5.

  The traveling vehicle body 3 includes a steering wheel 6 for steering the front wheels in front of the driver seat 4, a shift lever 7 for traveling is provided adjacent to the left side of the steering wheel 6, and the working unit A is disposed to the right of the driver seat 4. An operation lever 8 for performing an up / down operation or the like is disposed adjacent to the operation lever 8. Further, the power from the engine 15 mounted on the front portion of the traveling vehicle body 3 is transmitted to the left and right front wheels 1 via a transmission (not shown) incorporated in the transmission case 16, and the transmission and the rear The four-wheel drive type is configured to transmit to the left and right rear wheels 2 via a transmission mechanism (not shown) incorporated in the transmission case 17 for wheels. In the transmission case 16, the working power is branched from the traveling power, and the branched working power is transmitted to the working unit A via the external transmission shaft 18 and the like.

  As shown in FIGS. 1 to 5, the link mechanism 5 includes a pair of left and right upper links 5 a and a pair of left and right lower links 5 b that swing up and down around the front end of the traveling vehicle 3. A vertical quadruple link 5c extending over the rear ends of the parallel quadruple link is provided. Further, it is configured to swing up and down by the operation of a hydraulic cylinder 20 installed over the traveling vehicle body 3 and the upper link 5a. Then, at the lower end portion of the rear link 5c, the working portion A is supported so as to allow rolling of the working portion A around the rolling axis X facing forward and backward provided at the lower end portion.

  That is, by connecting the working part A to the rear end of the traveling vehicle body 3 via the link mechanism 5, the traveling vehicle body 3 is equipped with the working part A so that it can be raised and lowered and rolled.

  As shown in FIGS. 1 to 6, the working unit A has a seeding device 9 as a spraying device that performs four surface spraying (surface sowing) on a field, and four thread mud spraying (in mud) on a field. A fertilizer application device 10 as a spraying device for performing fertilization), a chemical spraying device 11 for applying surface treatment for four strips to a farm field, a leveling float 12 for leveling a mud surface of a farm field to be worked, and adjacent during work running A rotary marker 13 that draws a running reference line on the mud surface of the field as an index for traveling on the next work travel route, a grooving device 14 that forms a drainage groove on the mud surface of the field, and the like. Configured. And in the front-rear direction of the vehicle body, the sowing apparatus 9, the fertilizer application apparatus 10, and the chemical spraying apparatus 11 are disposed such that the fertilizer application apparatus 10 is located on the front side of the working part A, and the sowing apparatus 9 is the front-rear center side of the working part A. Located in the rear of the device 10, the medicine spraying device 11 is arranged in the rear of the seeding device 9 on the rear side of the working unit A, and is arranged so that they are arranged in close proximity to the front and rear. .

  A feed case 19 having an input shaft (not shown) for receiving power from the external transmission shaft 18 is provided at the center of the left and right of the front portion on the lower side of the working portion A. The feed case 19 incorporates a power distribution mechanism (not shown) that distributes the power received by the input shaft to the left and right. Further, a support shaft portion 22 is provided at a position slightly higher than the input shaft. The support shaft portion 22 is pivotally connected to the lower end portion of the rear link 5c so that the working portion A can be rolled around the rolling axis X in the front-rear direction. A cylindrical first transmission case 24 extending laterally outward from the feed case 19 is connected to the left and right sides of the feed case 19. A second transmission case 26 that extends rearward and upward from the outer end of the first transmission case 24 is connected to an outer end that is an extension end of each first transmission case 24. Then, the power from the power distribution mechanism is transmitted to the fertilizer device 10 through the left and right transmission shafts 23 inserted in the left and right first transmission cases 24, and the transmission shafts 23 and the left and right first transmission cases 24 are connected. 2 The power from the power distribution mechanism is transmitted to the seeding device 9 through a chain transmission mechanism (not shown) built in the transmission case 26.

  The feed case 19, the left and right first transmission cases 24, and the left and right second transmission cases 26 have high strength so as to be components of the support frame 25 that supports the seeding device 9 and the fertilizer 10. It is constituted as follows.

  Incidentally, in the traveling vehicle body 3, the operation of the hydraulic cylinder 20 is controlled so as to move up and down so that the leveling float 12 that swings up and down with the rear end as a fulcrum is maintained in a preset control reference posture. A control device (not shown) provided with a lift control means for performing the lift control is provided. And by the control operation of this raising / lowering control means, irrespective of the amount of subsidence with respect to the field of the front wheel 1 or the rear wheel 2, the ground height of the sowing apparatus 9 and the chemical spraying apparatus 11 is maintained constant, and the fertilizer 10 It is configured to make it possible to make the fertilization depth in the mud constant.

  In addition, as described above, since the working unit A is configured to allow rolling around the rolling axis X with respect to the traveling vehicle body 3, even when the traveling vehicle body 3 is inclined in the left-right direction, The posture of the part A can be made to cause the leveling float 12 to act properly on the mud surface of the field, and the ground heights at the left and right sides of the seeding device 9 and the chemical spraying device 11 can be made the same. In addition, it is possible to maintain a proper posture in which the fertilization depth of the farm field mud by the fertilizer application 10 can be made the same regardless of the fertilization position in the left-right direction.

  As shown in FIGS. 2, 5, and 6, the leveling float 12 is formed wide so that the width of the leveling float 12 is substantially the entire width of the working width of the working portion A (the working width for four strips). Specifically, a rectangular main body portion 12A having a length extending over substantially the entire working width of the working portion A (work width for four strips), and a forward extension extending forward from the left and right central locations of the main body portion 12A. It is formed in a shape including a protruding portion 12B and a pair of left and right rear extending portions 12C extending rearward from a position located between the work strips on the left and right ends of the main body portion 12A. The forward extension 12B functions as a sensing float that senses the ground reaction force with high sensitivity when performing the above-described lifting control.

  As shown in FIGS. 1 to 8, the seeding device 9 includes a pair of left and right seed hoppers 27 that store seed pods that have been subjected to iron coating treatment for bird damage, which is an example of seeds to be sown as a spread, and corresponding seeds. Four seed feeding mechanisms 28 that intermittently feed seeds stored in the hopper 27 by a predetermined amount, and four seeds that are fed by the corresponding seed feeding mechanism 28 are guided directly below in a state in which the influence of wind is suppressed. A surface for so-called spot sowing that includes a sowing guide 29, etc., sowing a plurality of seeds on the mud surface of the field after leveling with the leveling float 12 at a certain interval in the traveling direction of the vehicle body The seeding specification is configured as a four-row seeding specification capable of sowing up to four rows.

  The left and right various child hoppers 27 are formed in a horizontally long shape for storing seeds for two strips, and are directly above the corresponding rear extension 12C so as to overlap the rear extension 12C of the leveling float 12 in plan view. It has been deployed. At the top of each seed hopper 27, a lid body 31 for opening and closing a seed supply opening (not shown) formed at the upper end of each child hopper 27 is provided. A pair of left and right funnel-shaped portions 32 are formed below the seed hoppers 27 at a predetermined interval. And the seed feeding mechanism 28 corresponding to each of those funnel-shaped parts 32 is connected. Each seed hopper 27 and lid 31 is made of a transparent or translucent resin molded product so that the remaining amount of seeds can be visually confirmed.

  Each seed feeding mechanism 28 is located on the lateral side of the corresponding rear extension 12C behind the main body 12A of the leveling float 12 so as not to overlap the rear extension 12C of the leveling float 12 in plan view. It is deployed just above. Also, a seed feeding roll 30 in which a plurality of seed feeding recesses 30A are formed on the peripheral surface at regular intervals in the seed feeding case 48 connected to the funnel-shaped portion 32 of the corresponding seed hopper 27, The first brush 35 and the second brush 36 for cutting the seeds are provided, and the seeds in the corresponding seed hopper are intermittently fed out by a predetermined amount as the seed feeding roll 30 rotates. It is.

  A first connection portion 48 </ b> A that communicates with the funnel-shaped portion 32 of the corresponding seed hopper 27 is provided at the upper end portion of each seed feeding case 48. The lower end portion of each seed feeding case 48 is provided with a second connection portion 48 </ b> B having a rectangular shape in plan view for connecting the corresponding sowing guide 29 in communication. A maintenance portion 48D including a maintenance opening 48C, a detachable cover 34 for opening and closing the opening 48C, and the like is provided at the rear portion of each seed feeding case 48. The cover 34 is made of a transparent or translucent resin molded product so that the seeds being fed can be visually recognized.

  Each sowing guide 29 is formed in a rectangular shape in plan view that can be connected to the second connecting portion 48B of the corresponding seed feeding case 48 on the upper side. Further, the lower side is formed in a U-shape in a plan view that opens rearward, and is formed in a constricted shape in which the lateral width becomes narrower toward the lower side and the longitudinal length from the rear end becomes shorter. As a result, the seeds that are fed from the corresponding seed feeding mechanism 28 and fall by their own weight can be accurately guided to a predetermined sowing position in a state in which the side shaking is prevented.

  Each sowing guide 29 is configured to be attachable to and detachable from the corresponding seed feeding mechanism 28 by the swinging operation of the lock lever 33 provided in the corresponding seed feeding case 48.

  As shown in FIGS. 3 to 8, each child feeding roll 30 is externally fitted to a seed feeding shaft 43 formed of a hexagonal shaft provided in a left-right direction on a corresponding seed feeding case 48 so as to rotate integrally with the seed feeding shaft 43. It is. On the other hand, the rear end of each of the left and right second transmission cases 26 is provided with a seeding drive shaft 41 made of a hexagonal shaft provided in the left-right direction extending from the rear end to the left and right. The left and right seeding drive shafts 41 are configured to be interlocked with a chain transmission mechanism provided in the corresponding second transmission case 26. And the drive gear 42 which externally fitted the seed feeding shaft 43 corresponding to each left and right sowing drive shaft 41 to the both ends of each sowing drive shaft 41 so as to rotate integrally with the sowing drive shaft 41, and The seed feed shaft 43 is connected to the left end portion through a driven gear 44 that is externally fitted so as to rotate integrally with the seed feed shaft 43.

  Thereby, the various child feeding rolls 30 of the seeding device 9 can be rotationally driven by the power from the engine 15, and the seeding on the mud surface of the field can be performed at regular intervals by this rotational driving.

  Although not shown, the power distribution mechanism in the feed case is provided with a pair of left and right minority clutches for intermittently transmitting power from the input shaft to the power transmission shafts built in the left and right first transmission cases 24. And by operating the left and right minority clutches, the seeding device 9 is operated in the four-row seeding state in which all seed feeding mechanisms 28 are operated, and the left side 2 in which the left two seed feeding mechanisms 28 are operated. It is possible to switch between the row sowing state and the right two-row sowing state in which the two right seed feeding mechanisms 28 are operated.

  As shown in FIGS. 3-8, the bracket 46 is standingly arranged by the rear upper part of each 2nd transmission case 26 of right and left. A left and right first support member 47 made of a square pipe material is installed over the left and right brackets 46. Then, the seed support case 48 of the various child supply mechanisms 28 is bolted to the first support member 47 in a state where the seed support case 48 is spaced apart in the left-right direction. Further, four first shaft support members 49 that rotatably support the sowing drive shaft 41 and the seed feed shaft 43 are connected to the first support member 47 by bolts.

  That is, the left and right second transmission cases 26, the left and right brackets 46, the first support members 47, the four first shaft support members 49, and the like constitute a support portion for the seeding device in the support frame 25. It is. Then, with this support structure, the four seed feeding mechanisms 28 can be fixedly deployed in a stable state in which an appropriate seed feeding operation can be performed on the rear upper portion of the leveling float 12.

  As shown in FIGS. 3 to 6, a float support member 51 having a U-shaped cross-section extending from the lower portion to the rear downward direction is connected and fixed to the rear lower portion of each of the left and right second transmission cases 26. . Then, the leveling float 12 is connected to the lower end portions of the left and right float support members 51 via the pivot connection members 52 provided in the left and right rear extending portions 12C of the leveling float 12 so as to be swingable up and down. It is. The leveling float 12 is configured such that its vertical swing is limited within a predetermined range by supporting the front extending portion 12B by the suspension support mechanism 53. The suspension support mechanism 53 is provided with a spring 54 that swings and biases the leveling float 12 downward.

  A left and right second support member 55 made of a round pipe material is installed on the left and right float support members 51 over them. And the groove cutter 14 is equipped in the left-right center part of this 2nd support member 55. As shown in FIG. That is, the left and right float support members 51 and the second support member 55 constitute a support unit for the groove cutter in the support frame 25.

  The groove cutter 14 has a V-shape when viewed from the back, and is formed in a tapered shape in which the left and right widths become narrower toward the front side and the downward extension length becomes shorter. And it equips with the 2nd support member 55 in the state which protrudes below the ground-contact surface of the leveling float 12 largely.

  From the above configuration, when the work is performed with the leveling float 12 in contact with the ground, a deep drainage groove is formed at the center of the left and right of the working width of the working part A on the mud surface of the field. Can be formed stably.

  As shown in FIG. 3, the seeding device 9 is arranged at a low position where the seed feeding shaft 43 of the various child feeding mechanisms 28 is located at substantially the same height as the rolling axis X. Thereby, the seed feeding height position of the various child feeding mechanisms 28 can be brought close to the mud surface of the field, and the seed diffusion on the mud surface can be suppressed. Further, since the placement height of the seeding device 9 is lowered, the position of the center of gravity of the working part A can be lowered, and the stability of the vehicle body can be improved.

  As shown in FIGS. 1 to 6 and FIG. 9, the fertilizer application apparatus 10 intermittently applies a predetermined amount of fertilizer stored in a pair of left and right fertilizer hoppers 56 that store powdered fertilizer as the sprinkled material and the corresponding fertilizer hopper 56. 4 fertilizer feeding mechanisms 57 to be fed out, four fertilizer hoses 58 for guiding the fertilizer fed by the corresponding fertilizer feeding mechanism 57, and corresponding fertilizer hoses 58 by forming grooves for fertilization on the mud surface of the field. It is provided with four groovers 59 for supplying the fertilizer guided down into the fertilizer groove, and a cover plate 60 for covering the fertilizer supplied in the groove. In the mud fertilizer specification that applies fertilizer by a predetermined amount with a certain interval in the traveling direction, it is configured as a four-row fertilizer specification that can perform a maximum of four fertilizers.

  Each of the left and right fertilizer hoppers 56 is formed in a horizontally long shape that stores two pieces of fertilizer, and is disposed above the leveling float 12 so as to overlap the front side of the leveling float 12 in plan view. A lid 64 for opening and closing a fertilizer supply opening (not shown) formed at the upper end of each fertilizer hopper 56 is provided on the upper portion of each fertilizer hopper 56. A pair of left and right funnels (not shown) are formed at a lower portion of each fertilizer hopper 56 at a predetermined interval. And the fertilizer supply mechanism 57 corresponding to each of those funnel-shaped parts is connected. Each fertilizer hopper 56 and lid 64 are made of a transparent or translucent resin molded product so that the remaining amount of fertilizer can be visually confirmed.

  Each fertilizer feeding mechanism 57 includes a fertilizer feeding case 55 connected to the funnel-shaped portion of the corresponding fertilizer hopper 56, and a plurality of fertilizer feeding recesses 66A formed on the circumferential surface at regular intervals in the circumferential direction. A feed roll 66 is provided, and the fertilizer in the corresponding fertilizer hopper is intermittently fed out by a predetermined amount as the fertilizer feed roll 66 is driven to rotate. Further, the entirety is disposed at a height position located above the rolling axis X.

  The upper end portion of each fertilizer feeding case 55 is provided with a first connection portion 55 </ b> A that communicates with the funnel-shaped portion of the corresponding fertilizer hopper 56. At the lower end of each fertilizer feeding case 55, a cylindrical second connecting portion 55B that connects and connects one end of the corresponding fertilizer hose 58 is provided. At the front part of each fertilizer feed case 55, a cylindrical fertilizer discharge port 55C that enables discharge of the fertilizer remaining in the fertilizer hopper 56, and a detachable rubber cap 65 that opens and closes the fertilizer discharge port 55C. , Etc. are provided for maintenance part 55D.

  Each grooving device 59 includes a groove cutting tool 61 that forms a groove on the mud surface of the field, a guide tool 62 that guides fertilizer into the groove formed by the groove cutting tool 61, and the like. Then, the main body portion 12A of the leveling float 12 is in a state in which a predetermined interval is left and right, and the groove cutting tool 61 and the lower side of the guide tool 62 protrude below the ground contact surface of the leveling float 12. It is connected with.

  Each groove cutting tool 61 is formed in a substantially triangular shape in a side view and a tapered shape in a plan view. A rubber connection boot 63 having a bellows portion is provided on the upper portion of each guide 62. And the other end part of the fertilization hose 58 corresponding to each guide tool 62 is connected via this connection boot 63.

  As shown in FIGS. 3 to 6 and FIG. 9, the fertilizer feeding roll 66 provided in each of the two fertilizer feeding mechanisms 57 on the left side is provided on the left fertilizer feeding shaft 67 formed of a hexagonal shaft provided in the left-right direction across the two. The fertilizer feed shaft 67 is externally fitted so as to rotate integrally. The fertilizer feed roll 66 provided in each of the two fertilizer feed mechanisms 57 on the right side is in a state of rotating integrally with the fertilizer feed shaft 67 on the right fertilizer feed shaft 67 formed of a hexagonal shaft provided in the left-right direction across the two. It is fitted. Each of the left and right fertilizer feed shafts 67 is equipped with a swing arm 68 via a one-way clutch (not shown). On the other hand, in each of the left and right transmission shafts 23 inserted into the left and right first transmission cases 24, the outer end portions projecting outward from the left and right second transmission cases 26 rotate integrally with the corresponding transmission shafts 23. A rotating arm 69 is provided. The rotating arm 69 and the corresponding swinging arm 68 are coupled to each other via a push-pull rod 70 so that the rotational motion of the rotating arm 69 is converted into the swinging motion of the swinging arm 68.

  Thereby, each fertilizer supply roll 66 of the fertilizer application device 10 can be intermittently rotated by a predetermined amount by the power from the engine 15, and fertilization of the mud in the field can be performed at regular intervals by this rotational drive. It is configured.

  Similarly to the seeding device 9, by operating the left and right minority clutches, the operating state of the fertilizer device 10 is changed to the four-row fertilizer state in which all fertilizer feeding mechanisms 57 are operated, and the two fertilizer feeds on the left side. It is possible to switch between the left two-row fertilization state in which the mechanism 57 is operated and the right two-row fertilization state in which the two right fertilizer feeding mechanisms 57 are operated.

  As shown in FIGS. 3 to 5, a column member 71 made of a square pipe material or the like is erected on the front upper part of each of the left and right second transmission cases 26. Further, a left and right third support member 75 made of a square pipe material is installed over the upper ends of the left and right support members 71. The fertilizer feed case 55 of each fertilizer feed mechanism 57 is bolted to the third support member 75 with a predetermined interval left and right. The third support member 75 is bolted to three second shaft support members 72 that rotatably support the corresponding fertilizer feed shaft 67.

  That is, the left and right second transmission cases 26, the left and right support members 71, the third support member 75, the three second shaft support members 72, and the like constitute a support portion for the fertilizer application in the support frame 25. It is. Then, with this support structure, the four fertilizer feeding mechanisms 57 can be fixedly deployed in a stable state in which an appropriate fertilizer feeding operation can be performed at a location above the front portion of the leveling float 12.

  As shown in FIGS. 3 and 4, the third support member 75 is connected to the left and right support column members 71 by bolts so that the brackets 76 extend forward. Then, over the left and right brackets 76 and the rear link 5c of the link mechanism 5, the working portion A is returned so that the posture in the rolling direction of the working portion A returns to the reference posture parallel to the left and right inclination of the traveling vehicle body 3. A pair of left and right balance springs 77 oscillating and energizing are provided.

  As shown in FIGS. 1, 3, and 6, the seeding device 9 and the fertilizer application device 10 include an upper end portion of the seed hopper 27 in the seeding device 9 in which the upper end portion of the fertilizer hopper 56 in the fertilizer application device 10 is disposed close to the rear. It is deployed with the arrangement setting located above. Thereby, when performing the fertilizer supply with respect to the fertilizer hopper 56 from the back of the sowing apparatus 9, the cover body 31 of the seed hopper 27 can be utilized as a temporary storage stand of the fertilizer bag, and the fertilizer supply with respect to the fertilizer hopper 56 is easy. Can be.

  As shown in FIGS. 1 to 4 and 6, the medicine spraying device 11 is an electric hopper 78 for storing powdery medicines such as herbicides, and an electric motor so as to feed out medicines stored in the medicine hopper 78 by a predetermined amount. The medicine delivery mechanism 80 and the electric diffusion blade 81 that spreads the medicine delivered by the medicine delivery mechanism 80 on the mud surface of the field while diffusing are applied to the mud surface of the field after sowing and fertilization. Constructed to surface application specifications. The medicine feeding mechanism 80 and the diffusion blade 81 are built in a casing 79 connected to the lower part of the medicine hopper 78.

  On the upper part of the medicine hopper 78, a lid 85 for opening and closing a medicine replenishing opening (not shown) formed at the upper end of the medicine hopper 78 is provided. The medicine hopper 78 and the lid 85 are made of a transparent or translucent resin molded product so that the remaining amount of medicine can be visually confirmed.

  The chemical spraying device 11 is disposed at a position above the leveling float 12 that does not overlap with the leveling float 12 in a plan view at the left and right center of the working unit A. Further, it is arranged at a height position at which the drug can be spread and distributed in the area corresponding to the working width of the working part A.

  Although illustration is omitted, the medicine spraying device 11 can be switched between an activated state and a stopped state by operating a switch provided near the steering wheel 6 in the traveling vehicle body 3. Further, in a non-working state where seeding is not performed, it is configured to automatically stop in conjunction with stoppage of seeding.

  As shown in FIGS. 3 and 4, the fourth support member 82, which is made of a round pipe material or the like, is formed in the rear portion over the left and right center portion of the first support member 47 and the left and right center portion of the third support member 75. Is constructed so as to extend rearward from the first support member 47. And the chemical | medical agent spraying apparatus 11 is connected to the connection part 83 with which the rear-end part of the 4th support member 82 was provided via the buckle mechanism 84 so that attachment or detachment was possible.

  That is, the first support member 47, the third support member 75, the fourth support member 82, and the like constitute a support portion for the medicine spraying device in the support frame 25. And by this support structure, the chemical | medical agent spraying apparatus 11 can be fixedly deployed in the stable state which can perform an appropriate chemical | medical agent dispersion | distribution to the location above the leveling float 12. FIG.

  As shown in FIGS. 1 to 3, the left and right markers 13 lie down on the lateral side of the working part A and act on the fertilizer 10 to draw a running reference line on the mud surface of the field. It is configured to be swingable and switchable to a retracted posture that stands up along. And in the storing attitude | position, it is comprised so that the arm part 13A may be located in the rear side rather than the discharge end of the fertilizer discharge port 55C provided in the front part of each fertilizer delivery case 55 in the fertilizer application apparatus 10. FIG.

  Moreover, although illustration is abbreviate | omitted, as for the fertilizer discharge port 55C of each fertilizer delivery case 55, two left fertilizer discharge ports 55C are located in the left outer side rather than the link mechanism 5, and two right side fertilizer discharge ports 55C. The arrangement is set so that the fertilizer discharge port 55 </ b> C is located on the right outside of the link mechanism 5. Furthermore, in a state where the working part A is raised to the upper limit position or close to the upper limit position, each fertilizer discharge port 55 </ b> C is arranged and set to be positioned above the upper end of the rear wheel 2.

  Thereby, when approaching from the front of the fertilizer application machine 10 with respect to the fertilizer discharge port 55C of the maintenance part 55D provided in the front part of each fertilizer feeding case 55, the working part A is raised to the upper limit position or the vicinity thereof. By placing, it is possible to avoid the possibility that the link mechanism 5, the left and right markers 13, and the left and right rear wheels 2 will get in the way.

  And when taking out the residual fertilizer of each fertilizer hopper 56 using those manure discharge openings 55C, after approaching those manure discharge openings 55C from the wide space ahead of a fertilizer application machine, manure discharge openings 55C are set. The residual fertilizer of each fertilizer hopper 56 can be easily taken out by removing the closing cap 65 from the fertilizer discharge port 55C (see FIGS. 1 to 3 and FIG. 9).

  As shown in FIG. 6, in the seeding device 9, the various child feeding mechanisms 28 are positioned below the drug spraying device 11, and the two seed feeding mechanisms 28 on the left side are located on the left outside of the drug spraying device 11. The two seed feeding mechanisms 28 on the right side are positioned so as to be located on the right outer side with respect to the medicine spraying device 11. Thereby, when approaching from the back of the sowing apparatus 9 with respect to the maintenance part 48D provided in the rear part of the various child feeding case 48, it is possible to avoid the possibility that the medicine spraying apparatus 11 becomes an obstacle.

  As shown in FIGS. 7 and 8, in the seeding device 9, the first brushes 35 acting on the various child feeding rolls 30 from above are screwed to the seed guide 37 provided on the upper part of the various child feeding cases 48. It is. Each seed guide 37 includes an engaging portion 37 </ b> A that engages from above with a pair of left and right locking pins 48 </ b> E provided on various child feeding cases 48, and a lattice-like seed net provided on the bottom of each child hopper 27. A gripping portion 37 </ b> B inserted through 38 is integrally formed.

  From this configuration, each first brush 35 can be easily detached from the seed feeding case 48 together with the seed guide 37 and the seed net 38 by grasping and pulling up the gripping portion 37B with a hand inserted from the opening of the seed hopper 27. .

  Each of the second brushes 36 that act on the seed feeding rolls 30 from behind is provided with a roll guide 39 screwed to the lower part thereof, and a left and right support shaft 40 provided at the rear upper part of each child feeding case 48 as a fulcrum. Thus, it is configured to be switchable between an action position in contact with the seed feeding roll 30 and a retracted position away from the seed feeding roll 30. In addition, the operation lever 45 disposed on the right outside of the maintenance section 48D on the rear side of the various child feeding cases can be switched between the operating position and the retracted position by operating the operating lever 45, and can be fixedly held at the operating position. As shown in FIG.

  With the above configuration, when taking out the residual seed pods of the various child hoppers 27, first, after approaching the sowing device 9 from a wide space behind the seeding device, the lid 31 of the various child hoppers 27 is opened and operated. The opening of each seed hopper 27 is opened, and the first brush 35 is taken out together with the seed guide 37 and the seed net 38 from the opening. Next, the engagement holding at the operating position of any one of the operating levers 45 is released, and the operating lever 45 is swung backward to switch the second brush 36 together with the roll guide 39 from the operating position to the retracted position. Thereby, the residual seed pods of the various child hoppers 27 can be easily taken out via the seed feeding mechanism 28 and the sowing guide 29 corresponding to the operated operating lever 45.

  That is, the maintenance part 55D which enables discharge | emission of the fertilizer which remained to the fertilizer 10 of the front side among the seeding device 9 and the fertilizer 10 which were deployed near back and forth is provided in the front side of the fertilizer 10, and the rear side By providing a maintenance unit 48D that enables discharge of seeds remaining in the seeding device 9 to the outside, when the maintenance unit 48D is provided on the front side of the seeding device 9, or after the fertilizer device 10 Compared with the case where the maintenance unit 55D is provided on the side, it is possible to easily remove the seed pod remaining in the seeding device 9 and the fertilizer remaining in the fertilizer application device 10.

  As shown in FIGS. 3 and 5, each cover plate 60 extends backward from the lower rear end of the connection boot 63 to the connection boot 63 provided in the groove forming device 59 located immediately before the cover plate 60. The groove forming device 59 is integrally formed so as to be positioned behind the rear end of the guide tool 62. Moreover, it has arranged so that it may be located ahead of the sowing position by the sowing apparatus 9.

  With the above configuration, the fertilizer supplied to the mud in the field by the fertilizer application apparatus 10 can be immediately covered with the soil covering plates 60. Thereby, the fertilizer supplied in the mud of the agricultural field can be surely buried in the mud of the agricultural field in a state in which the lifting to the surface of the agricultural field is prevented.

  In addition, since seeding by the seeding device 9 is performed on the mud surface of the field after being covered with each covering plate 60, the flow into the groove marks after fertilization of the seed pods sprayed on the mud surface of the field is performed. This can be reliably prevented, so that the seed potato can be reliably seeded at an appropriate position on the mud surface of the field.

    [Another embodiment]

[1] As a paddy field work machine, two spraying devices 9 and 10 having a work width of less than 4 or more than 4 may be arranged close to each other.

[2] The paddy field work machine may be a walking type equipped with two spraying devices 9 and 10 arranged close to each other on the traveling vehicle body 3 configured in a walking type.

[3] The paddy field work machine is a direct sowing machine in which the seeding device 9 and the fertilizer application device 10 are arranged close to each other in a state where the seeding device 9 is located on the front side of the vehicle body and the fertilizer device 10 is located on the rear side of the vehicle body. May be.

[4] The paddy field machine may be a direct sowing machine in which the seeding device 9 exemplified in the above embodiment and the chemical spraying device configured in the same manner as the fertilizing device 10 exemplified in the above embodiment are arranged in the vicinity of each other. Good.

[5] As the paddy field machine, a rice transplanter in which the fertilizer application apparatus 10 exemplified in the above embodiment and the fertilizer application apparatus or the chemical spraying apparatus configured in the same manner as the seeding apparatus 9 exemplified in the above embodiment are arranged in the vicinity of each other. There may be.

[6] Various changes can be made to the configuration of the maintenance units 48D and 55D of the two spraying devices 9 and 10. For example, you may comprise the maintenance part 48D of the sowing apparatus 9 which is an example of a spreading device similarly to the maintenance part 55D of the fertilizer application apparatus 10 illustrated by the said embodiment. Moreover, you may comprise the maintenance part 55D of the fertilizer application 10 which is an example of a spraying apparatus similarly to the maintenance part 48D of the sowing apparatus 9 illustrated by the said embodiment.

[7] As shown in FIG. 10, each of the groovers 59 provided in the fertilizer application device 10 that is a spraying device for mud spraying specifications is arranged on the front side of the leveling float 12, and a seeding device that is a spraying device for surface spraying specifications You may comprise so that the spreading position of the spread material by 9 etc. may be set behind the leveling float 12. FIG.

  In addition, in FIG. 10, although the thing of the structure which has arrange | positioned the earth covering board 60 behind each groover 59 was illustrated, it is not covered with the earth covering board 60 behind each groove producing machine 59, but is covered with the leveling float 12 You may comprise so that it may perform.

[8] As shown in FIGS. 11 and 12, each cover plate 60 provided in the fertilizer application device 10 or the like, which is a spraying device for mud spraying specifications, is attached to the connection boot 63 provided in the groove producing device 59 located immediately before it. The groove forming device 59 is bypassed from the leveling float 12 positioned in front of each groove forming device 59 so as to be independently formed of a sheet metal material or the like without being integrally formed, and to be positioned behind each groove forming device 59. You may comprise so that it may equip with the extension end of the support rod 86 extended to the back of the groove producing device 59 in the state.

  And in this structure, you may make it bend and form the upright part 60A which prevents the front end part of the covering earth board 60, such as a straw remaining in the mud, from getting entangled in the front end part of each covering earth board 60.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a paddy field work machine such as a direct sowing machine or a rice transplanter in which two spraying devices mounted on a traveling vehicle body are arranged close to each other.

3 Traveling body 9 Spreading device (rear side)
10 Spraying device (front side)
12 Leveling float 48D Maintenance section (rear sprayer)
55D Maintenance Department (front spraying device)
59 Grower 60 Covering plate

Claims (4)

In a paddy field work machine with two spraying devices installed on the traveling body
A maintenance section is provided on the front side of the front side spraying device to allow the sprayed material remaining on the front side spraying device to be discharged to the outside so that the sprayed material remaining on the rear side spraying device can be discharged to the outside. A paddy field work machine provided with a maintenance section on the rear side of the rear spraying device. Equipped with a grooving device that forms a groove for burying the sprinkling material in one of the front and rear spraying devices, and in the mud that sprays the sprinkling material into the mud through the one sprinkling device. It is configured to spray specification, and the other spraying device of the front and rear spraying devices is configured to surface spraying specification to spray the sprinkled material on the mud surface,
The paddy field work machine according to claim 1, wherein the grooving device is disposed at a position on the front side of the vehicle body relative to a sprayed position of the sprayed material by the other spraying device. Deploying a cover plate to cover the sprinkled material distributed in the groove behind the groove producing device,
The paddy field work machine according to claim 2, wherein the covering plate is disposed at a position on the front side of the vehicle body with respect to a sprayed position of the sprayed material by the spraying device of the surface spraying specification. Equipped with a leveling float to level the mud surface,
The paddy field work machine according to claim 2, wherein the grooving device is arranged on the front side of the leveling float, and the spraying position of the spatter by the spraying device of the surface spraying specification is set behind the leveling float.

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