JP2008173086A - Paddy working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paddy working machine for performing seedling plantation, direct seed rice sowing, and the like, and simultaneously supplying a liquid agrochemical materials (liquid fertilizers, liquid agrochemicals, or the like) to a paddy field, wherein storage portions and delivery portions are arranged in a compact manner. <P>SOLUTION: This paddy working machine includes delivery portions 80a to 80d, 81a, 81b under storage portions 16, connects supply passages 67, 68, 70 extending from the storage portions 16 to the delivery portions 80a to 80d, 81a through 81b, connects supply hoses between the delivery portions 80a to 80d, 81a, 81b and supply portions, and includes openable/closable draining passages 70a in the supply passages 67, 68, 70. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a paddy field work machine configured to supply a liquid agricultural supply body (liquid fertilizer, chemicals, etc.) to a rice field while planting seedlings or directly sowing seed pods.

In a riding type rice transplanter that is an example of a paddy field work machine, for example, as disclosed in Patent Document 1, a liquid fertilizer (corresponding to an agricultural supply body) is supplied to a rice field while planting seedlings. There is something that was done.
In patent document 1, the storage part (12a, 12b of FIG. 1 and FIG. 3 of patent document 1) which stores a liquid fertilizer is provided in the right and left side of a body, and several delivery part (figure of patent document 1). 3 18a, 18b) is provided on the rear side of the driver's seat (9 in FIG. 3 of Patent Document 1), and a plurality of supply units (20a, 20b in FIG. 1 and FIG. 3 in Patent Document 1) are provided in the seedling planting device. The supply path (19a, 19b in FIG. 3 of Patent Document 1) extended from the storage section is connected to the supply section, and the supply hose (FIG. 3 in Patent Document 1) extends between the supply section and the supply section. 21a, 21b) are connected.
Thus, when the feeding unit is driven, liquid fertilizer is supplied from the storage unit to the feeding unit, supplied from the feeding unit to the supply unit, and supplied to the rice field.

JP 2005-295861 A

In Patent Document 1, since the storage unit and the feeding unit are separated from each other and arranged in the body, a relatively large space is used for the arrangement of the storage unit and the feeding unit in plan view, and there is room for improvement. is there.
The present invention provides a paddy field work machine configured to supply a liquid agricultural supply body (liquid fertilizer, chemicals, etc.) to a rice field while planting seedlings or directly sowing seed pods. The object is to be able to arrange in a compact manner.

[I]
(Constitution)
The first feature of the present invention is that the paddy field machine is configured as follows.
The storage part which stores a liquid agricultural supply body, The feeding part which pays out the liquid agricultural supply body of a storage part, and the supply part which supplies the liquid agricultural supply body from a feeding part to a rice field are provided. A feeding section is provided below the storage section, a supply path extending from the storage section is connected to the feeding section, and a supply hose is connected across the feeding section and the supply section. The liquid agricultural supply body of the storage unit is supplied to the feeding unit through the supply path, and is supplied from the feeding unit to the supply unit through the supply hose. The supply path is provided with an openable / closable discharge path.

(Function)
According to the first feature of the present invention, the feeding portion is provided below the storage portion, and the storage portion and the feeding portion are arranged vertically, and the feeding portion is outward from the range of the storage portion in plan view. It does not come out (even if the feeding part goes out, the exiting area is relatively small). Thereby, according to the first feature of the present invention, the arrangement of the storage unit and the feeding unit is compared with the configuration in which the storage unit and the feeding unit are separated from each other in the plan view and arranged in the body as in Patent Document 1. Does not require too much space.

According to the 1st characteristic of this invention, the supply path extended from the storage part is connected to the supply part, and the discharge path which can be opened and closed in the supply path is provided. Thereby, for example, when discharging the liquid agricultural supply body remaining in the storage section after finishing the work of one day, the supply path for supplying the liquid agricultural supply body remaining in the storage section by opening the discharge path And can be discharged through the discharge path.
In this case, since the supply path is provided with an openable / closable discharge path, the discharge path is positioned below the storage section, the distance between the storage section and the discharge path is short, and the liquid remaining in the storage section Agricultural supply body can be extracted before entering the feeding section, and the liquid agricultural supply body with little resistance can be discharged without passing through the feeding section. Can be discharged.

(The invention's effect)
According to the first feature of the present invention, in a paddy field machine configured to supply a liquid agricultural supply body (liquid fertilizer, chemicals, etc.) to a rice field while planting seedlings or directly sowing seed pods, It is no longer necessary to arrange a part and a feeding part, and the storage part and the feeding part can be arranged compactly.

  According to the first feature of the present invention, the supply path is provided with an openable / closable discharge path, so that the liquid agricultural supply body remaining in the storage section can be discharged without difficulty and remains in the storage section. It was possible to shorten the time for discharging the liquid agricultural supply body, and the work efficiency could be improved.

[II]
(Constitution)
The second feature of the present invention resides in the following configuration in the paddy field working machine of the first feature of the present invention.
A plurality of feeding portions are arranged side by side along the longitudinal direction of the storage portion.

(Function)
According to the second feature of the present invention, the “action” described in the preceding item [I] is provided in the same manner as the first feature of the present invention, and in addition to this, the following “action” is provided.
According to the second feature of the present invention, when a plurality of feeding sections are provided, the plurality of feeding sections are arranged along the longitudinal direction of the storage section so that the plurality of feeding sections are removed from the range of the storage section in plan view. Arrange the plurality of feeding parts without difficulty (so that even if a plurality of feeding parts come out from the range of the storage part in a plan view, the area that comes out is relatively small). be able to.

(The invention's effect)
According to the second feature of the present invention, the “effect of the invention” described in the preceding item [I] is provided in the same manner as the first feature of the present invention. In addition, the following “effect of the invention” is provided. ing.
According to the second feature of the present invention, when a plurality of feeding portions are provided, the plurality of feeding portions do not protrude outward from the range of the storage portion in plan view (the plurality of feeding portions from the range of the storage portion in plan view). Even if it goes out, the area where it comes out is relatively small), so that it is possible to arrange a plurality of feeding parts without difficulty and to arrange the storage part and the plurality of feeding parts in a compact manner. I was able to do that.

[III]
(Constitution)
The third feature of the present invention resides in the following configuration in the paddy field working machine of the second feature of the present invention.
A plurality of feeding portions arranged side by side along the longitudinal direction of the storage portion are communicated with each other, and a supply path is connected to one end of the plurality of feeding portions.

A fourth feature of the present invention resides in the following configuration in the paddy field working machine of the second feature of the present invention.
A plurality of feeding sections arranged side by side along the longitudinal direction of the storage section are communicated with each other, the storage section is provided with two supply paths, and one supply path is connected to one end of the plurality of feeding sections, The other supply path is connected to the other end of the plurality of feeding portions.

(Function)
According to the third feature (fourth feature) of the present invention, as in the second feature of the present invention, the “action” described in the preceding section [I] [II] is provided. It has an “action”.
According to the third feature (fourth feature) of the present invention, when the plurality of feeding portions are arranged side by side along the longitudinal direction of the storage portion as described in [II] above, the liquid agricultural supply body is stored in the storage portion. Supplied to one end of a plurality of feeding sections through a supply path (a liquid agricultural supply body is supplied from a storage section to one and the other end of the plurality of feeding sections through a supply path) From one end portion of the feeding portion (from one end and the other end portion of the plurality of feeding portions), it is supplied to each of the plurality of feeding portions. Thereby, it is not necessary to connect many supply paths across the storage unit and each of the plurality of feeding units.

  According to the 4th characteristic of this invention, when arrange | positioning a some delivery part along with the longitudinal direction of a storage part and arrange | positioning, a liquid agricultural supply body is in each of several delivery parts from one edge part of several delivery parts. In addition to being supplied, the liquid agricultural supply body is supplied from the other end of the plurality of feeding portions to each of the plurality of feeding portions, so that the liquid agricultural supply body is distributed to each of the plurality of feeding portions. easy.

(The invention's effect)
According to the third feature (fourth feature) of the present invention, the “effect of the invention” described in the preceding paragraphs [I] and [II] is provided in the same manner as the second feature of the present invention. The “effect of the invention” is provided.
According to the third feature (fourth feature) of the present invention, when a plurality of feeding portions are arranged side by side along the longitudinal direction of the storage portion, there is no need to connect a large number of supply paths to each of the plurality of feeding portions. As a result, the number of supply paths can be reduced, which is advantageous in terms of simplification of the structure.

  According to the fourth feature of the present invention, when a plurality of feeding parts are arranged side by side along the longitudinal direction of the storage part, the liquid agricultural supply body can easily reach each of the plurality of feeding parts, and the liquid is fed from the plurality of feeding parts. As a result, the feeding performance of the liquid farming supply body could be improved.

[IV]
(Constitution)
A fifth feature of the present invention resides in the following configuration in any one of the paddy field working machines of the first to fourth features of the present invention.
A storage part, a feeding part, a supply path and a discharge path are provided on the right or left side of the machine body, and the discharge path is directed obliquely outward and downward.

(Function)
According to the fifth aspect of the present invention, in addition to any one of the first to fourth characteristics of the present invention, the “action” described in the preceding paragraphs [I] to [III] is provided. It has the following “actions”.
According to the 5th characteristic of this invention, when the storage part, the drawing | feeding-out part, the supply path, and the discharge path are provided in the right or left side of the body, the discharge path is turned diagonally outwardly downward. As a result, the lower end (exit) of the discharge path is slightly separated from the aircraft to the right or left side, so when the liquid agricultural supply body remaining in the storage section is discharged through the discharge path and collected in the container, The liquid agricultural supply body can be easily collected by the container while avoiding interference with the aircraft.

(The invention's effect)
According to the fifth feature of the present invention, the “effect of the invention” described in the preceding paragraphs [I] to [III] is provided as in any one of the first to fourth features of the present invention. In addition, the following “effects of the invention” are provided.
According to the fifth aspect of the present invention, when the liquid agricultural supply body remaining in the reservoir is discharged through the discharge path and collected in the container, the liquid agricultural supply body using the container is avoided while avoiding interference between the container and the machine body. As a result, it is possible to improve the workability of recovering the liquid agricultural supply using the container.

[V]
(Constitution)
A sixth feature of the present invention resides in the following configuration in any one of the paddy field working machines of the first to fifth features of the present invention.
A clogging sensor for the liquid agricultural supply body is provided in the discharge section of the supply section where the liquid agricultural supply body is supplied from the supply section to the supply hose.

(Function)
According to the sixth aspect of the present invention, in addition to any one of the first to fifth aspects of the present invention, the “action” described in the preceding paragraphs [I] to [IV] is provided. It has the following “actions”.
When a clogging sensor for detecting clogging of a supply hose or a supply unit is provided, according to the sixth feature of the present invention, the discharge unit of the feeding unit is provided with a clogging sensor for a liquid agricultural supply body. The clogging sensor does not come out from the area of the area (even if the clogging sensor comes out of the area of the storage part in the plan view, the exiting area is relatively small), the storage part, the feeding part, the clogging sensor Does not require much space for placement.

(The invention's effect)
According to the sixth aspect of the present invention, as in any one of the first to fifth aspects of the present invention, the “effect of the invention” described in the preceding paragraphs [I] to [IV] is provided. In addition, the following “effects of the invention” are provided.
According to the sixth aspect of the present invention, the storage unit, the feeding unit, and the clogging sensor do not require a large space, and the storage unit, the feeding unit, and the clogging sensor can be arranged compactly.

[VI]
(Constitution)
The seventh feature of the present invention resides in the following configuration in the paddy field working machine of the sixth feature of the present invention.
A display unit for displaying detection of clogging by the clogging sensor is provided on the right or left side of the aircraft.

(Function)
According to the seventh feature of the present invention, as in the sixth feature of the present invention, the “action” described in the preceding paragraphs [I] to [V] is provided, and in addition to this, the following “action” is provided. ing.
According to the seventh feature of the present invention, when the clogging detection is performed by the clogging sensor, the auxiliary operator on the right or left side of the machine body can relatively easily visually check the display unit.

(The invention's effect)
According to the seventh feature of the present invention, the “effects of the invention” described in the preceding paragraphs [I] to [V] are provided in the same manner as the sixth feature of the present invention. It has an “effect”.
According to the seventh feature of the present invention, the auxiliary operator on the right or left side of the aircraft can relatively easily view the display unit and can recognize the detection of clogging by the clogging sensor. As a result, the workability for the auxiliary worker was improved.

[1]
As shown in FIGS. 1 and 2, a link mechanism 3 and a hydraulic cylinder 4 that drives the link mechanism 3 to move up and down are provided at the rear of the machine body including the right and left front wheels 1 and the right and left rear wheels 2. In addition, an eight-row type seedling planting device 5 is supported at the rear of the link mechanism 3 to constitute a riding type rice transplanter.

  As shown in FIGS. 1 and 2, the seedling planting device 5 includes four transmission cases 6, a planting case 7 that is rotatably supported on the right and left sides of the rear portion of the transmission case 6, and a planting case 7. A pair of planting arms 8, 5 grounding floats 9, seedling rests 10 and the like provided at both ends of the planting frame 5 and a support frame 64 (see FIG. 11) arranged along the left-right direction of the seedling planting device 5. And the transmission case 6 is connected to the rear in a cantilevered manner (see FIG. 13). As a result, the planting case 7 is rotationally driven as the seedling platform 10 is driven to reciprocate laterally to the left and right, and the planting arm 8 alternately takes out the seedlings from the lower part of the seedling platform 10 and puts them on the rice field. Plant.

[2]
Next, the traveling transmission system to the right and left front wheels 1 and the right and left rear wheels 2 will be described.
As shown in FIG. 1, a mission case 17 is provided at the front of the aircraft, and an engine 19 is supported on a support frame 18 connected to the front of the mission case 17. The right and left front axle cases 20 are connected to the right and left lateral sides of the mission case 17 so that the right and left front wheels 1 can be steered around the vertical axis of the right and left front axle cases 20. It is supported by.

  As shown in FIGS. 5 and 6, a hydrostatic continuously variable transmission 21 is connected to an upper front portion of the left lateral side portion of the transmission case 17, and the power of the engine 19 is hydrostatic continuously variable. It is transmitted to the input shaft 21 a of the device 21 via a transmission belt 86. The hydrostatic continuously variable transmission 21 has a neutral stop position, and is configured to be continuously variable on the forward side and the reverse side. As shown in FIGS. 5 and 6, the input shaft 21 a and the output shaft 21 b of the hydrostatic continuously variable transmission 21 enter the inside of the mission case 17, and the transmission shaft 22 is rotatably supported by the mission case 17. Thus, the output shaft 21b of the hydrostatic continuously variable transmission 21 and the transmission shaft 22 are connected by a spline structure.

  As shown in FIGS. 5 and 6, a low-speed gear 24 and a high-speed gear 25 are fixed to the transmission shaft 22, and a shift gear 27 is connected to the transmission shaft 26 arranged in parallel with the transmission shaft 22 by a spline structure. 26 is externally fitted so as to rotate and slide together. As a result, the power of the output shaft 21b and the transmission shaft 22 of the hydrostatic continuously variable transmission 21 is shifted to high and low by shifting the shift gear 27 to engage with the low speed gear 24 and the high speed gear 25. It is transmitted to the transmission shaft 26.

  As shown in FIG. 6, a hydraulic pump 59 is connected to the upper front portion of the right side portion of the mission case 17, and an input shaft 59 a of the hydraulic pump 59 enters the inside of the mission case 17. The input shaft 21a of the hydrostatic continuously variable transmission 21 and the input shaft 59a of the hydraulic pump 59 are arranged concentrically, and the input shaft 21a of the hydrostatic continuously variable transmission 21 and the input shaft of the hydraulic pump 59 are arranged. 59a, the transmission shaft 60 is connected by a spline structure via a connecting member 61. As a result, the power of the engine 19 is transmitted to the input shaft 21a of the hydrostatic continuously variable transmission 21, and is transmitted to the hydraulic pump 59 via the drive shaft 60, thereby driving the hydraulic pump 59.

  As shown in FIG. 6, a pair of transmission shafts 28 are arranged to face each other across the transmission case 17, the right and left front axle cases 20, and a differential mechanism 29 is provided between the pair of transmission shafts 28. A case 29a of the differential mechanism 29 is rotatably supported by the mission case 17. A transmission gear 30 is fixed to the transmission shaft 26, and a transmission gear 31 fixed to the case 29 a of the differential mechanism 29 is engaged with the transmission gear 30.

  As shown in FIG. 6, a cylindrical member 32 is externally fitted to one transmission shaft 28 by a key structure so as to be integrally rotatable and slidable, and is linked to an operation shaft 41 that slides the cylindrical member 32, and the operation shaft 41. A differential lock pedal (not shown) is provided. Accordingly, when the diff lock pedal is depressed, the operation shaft 41 is rotated, the cylindrical member 32 is slid and engaged with the end of the case 29a of the differential mechanism 29, and the cylindrical member 32 is engaged with the case of the differential mechanism 29. By engaging the end of 29a, the differential mechanism 29 can be locked.

As shown in FIG. 6, a traveling output shaft 34 is provided at the rear portion of the mission case 17 and protrudes rearward, and a bevel gear 35 fixed to the case 29 a of the differential mechanism 29 is connected to the bevel gear provided to the traveling output shaft 34. Bites 36. As shown in FIG. 1, a rear axle case 37 that supports the right and left rear wheels 2 is provided, and a transmission shaft 38 extends across a travel output shaft 34 and an input shaft (not shown) of the rear axle case 37. Is connected.
As a result, as shown in FIGS. 1 and 6, the power of the output shaft 21 b of the hydrostatic continuously variable transmission 21 is transmitted to the right and left front wheels via the transmission shafts 22 and 26, the differential mechanism 29, and the transmission shaft 28. 1 and transmitted to the right and left rear wheels 2 via the case 29a of the differential mechanism 29, the travel output shaft 34, and the transmission shaft 38.

  As shown in FIG. 6, a plurality of friction plates 39 are provided between the wall portion inside the mission case 17 and the travel output shaft 34, and the disk-shaped operation member 40 is attached to the travel output shaft 34 so as to be relatively rotatable. An operating shaft 42 that slides on the operating member 40 and a brake pedal (not shown) linked to the operating shaft 42 are provided. The brake pedal (not shown) and the hydrostatic continuously variable transmission 21 is mechanically linked. Thus, when a brake pedal (not shown) is depressed, the hydrostatic continuously variable transmission 21 is operated to the neutral stop position, the operation shaft 42 is rotated, and the operation member 40 is slid to operate. The member 40 presses the friction plate 39, and the traveling output shaft 34 is braked. When the travel output shaft 34 is braked, the right and left front wheels 1 are braked via the differential mechanism 29 and the transmission shaft 28, and the right and left rear wheels are connected via the travel output shaft 34 and the transmission shaft 38. 2 is braked.

[3]
Next, the planting transmission system to the seedling planting device 5 will be described.
As shown in FIGS. 5 and 6, the cylindrical member 23 is externally fitted to the transmission shaft 22 via the one-way clutch 44, and the transmission gear 43 externally fitted to the transmission shaft 22 so as to be relatively rotatable is attached to the cylindrical member 23. Occluded and connected. The one-way clutch 44 transmits the forward power of the output shaft 21 b of the hydrostatic continuously variable transmission 21 to the cylindrical member 23 and the transmission gear 43, and the one-way clutch 44 transmits the output shaft 21 b of the hydrostatic continuously variable transmission 21. The reverse power is not transmitted to the cylindrical member 23 and the transmission gear 43.

  As shown in FIGS. 5, 6, and 7, the transmission gear 45 and the six transmission gears 46 are connected to each other so as to rotate integrally, and the transmission gear 45 and the six transmission gears 46 rotate relative to the transmission shaft 26. It is freely fitted and the transmission gears 43 and 45 are engaged. Six transmission gears 48 are fitted on a transmission shaft 47 arranged in parallel with the transmission shaft 26 so as to be relatively rotatable, and each of the six transmission gears 46 and the transmission gear 48 is engaged.

  As shown in FIGS. 5 and 7, the portion of the transmission shaft 47 to which the transmission gear 48 is fitted is formed in a hollow shape (cylindrical shape), and a circular opening ( (Not shown) is formed, and the ball 33 is disposed in the opening of the transmission shaft 47. An operation lot 49 is slidably inserted into the transmission shaft 47, a large diameter portion 49a is provided at the tip of the operation rod 49, and six annular recesses 49b and one piece are provided in the middle of the operation rod 49. An annular recess 49c is formed. A detent ball 62 that can be engaged with the recesses 49 b and 49 c of the operation rod 49 is provided in the mission case 17.

  As described above, the six transmission gears 46, the transmission gears 48, the operation rods 49, and the like constitute the planting transmission mechanism 50. The operating rod 49 is slid to push the selected ball 33 outward by the large-diameter portion 49 a of the operating rod 49, and the selected ball 33 is moved to the opening of the transmission shaft 47 and the inner peripheral portion of the transmission gear 48. By entering, one transmission gear 48 is connected to the transmission shaft 47. As a result, one of the six transmission gears 48 is selected by the operating rod 49 and connected to the transmission shaft 47, so that the power of the transmission shaft 26 is changed to six stages and is transmitted to the transmission shaft 47. Communicated.

  As shown in FIG. 7, in the planting transmission mechanism 50, when the operating rod 49 is slid to shift the power of the transmission shaft 26 to six stages, the detent ball 62 is engaged with one of the recesses 49 b of the transmission rod 49. At the same time, the operation rod 49 is held. When the operation rod 49 is slid to the position where the detent ball 62 is engaged with the concave portion 49c of the operation rod 49, the large diameter portion 49a of the operation rod 49 is separated from all the balls 33 to the right side of the drawing in FIG. As a result, all the balls 33 are separated from the transmission gear 48 to the inner side of the transmission shaft 47, and all the transmission gears 48 are not connected to the transmission shaft 47 (a state in which they are externally fitted so as to be relatively rotatable). Yes, the power of the transmission shaft 26 is cut off by the planting transmission mechanism 50 (corresponding to the state where the planting transmission mechanism 50 is operated to the neutral stop position).

  As shown in FIGS. 5 and 7, an output shaft 51 is provided at the upper part of the rear portion of the transmission case 17 and protrudes rearward, and a bevel gear 52 that is externally fitted to the output shaft 51 so as to be relatively rotatable is attached to the transmission shaft 47. It meshes with a fixed bevel gear 53. The shift member 54 is externally fitted to the output shaft 51 so as to be rotatable and slidable integrally with the output shaft 51 by a spline structure, and a spring 55 is provided to bias the shift member 54 to the occlusal side with the bevel gear 52. An operation rod 56 for operation is provided, and a planting clutch 57 that can transmit and shut the power of the transmission shaft 47 to and from the output shaft 51 is configured. As shown in FIG. 1, a transmission shaft 58 is connected across the output shaft 51 and an input shaft (not shown) of the seedling planting device 5.

  Thereby, as shown in FIGS. 1, 5, 6, and 7, the power of the transmission shaft 26 is transferred through the planting speed change mechanism 50, the bevel gears 52 and 53, the planting clutch 57, the output shaft 51, and the transmission shaft 58. It is transmitted to the attaching device 5. By shifting the power transmitted to the seedling planting device 5 (transmission shaft 47) by the planting speed change mechanism 50, the seedling planting interval (working traveling speed of the machine body) by the seedling planting device 5 (planting arm 8) is changed. The ratio of the planting speed of the seedling planting device 5 (planting arm 8) with respect to can be changed.

[4]
Next, right and left fertilizer tanks 16 (corresponding to storage parts), first, second, third, fourth, fifth, sixth, seventh and eighth side pumps 80a, 80b, 80c, 80d, 80e, 80f, 80g, The structure of 80h (corresponding to the feeding portion) and the first, second, third, and fourth deep pumps 81a, 81b, 81c, 81d (corresponding to the feeding portion) will be described.

  As shown in FIGS. 1, 2, and 3, steps 13 for getting on and off the driver's seat 11 from the eaves are provided on the right and left sides of the lower part of the hood 12 covering the engine 19. From the axle case 20, the front and rear support frames 14 are extended laterally outside the right and left steps 13 and extended upward, and four spare seedling platforms 14 a are arranged laterally of the right and left steps 13. The front and rear support frames 14 are supported so as to be located on the outside.

  As shown in FIGS. 3, 14, and 15, the front and rear support frames 14 are connected to the front and rear support frames 14 so as to extend to the right and left sides, and are configured by bending a plate material. A support frame 63 is connected across the front and rear support frames 15. Right and left fertilizer tanks 16 for storing liquid fertilizer (corresponding to agricultural supply bodies) are mounted and supported on a support frame 63 and are integrally formed at the bottom of the right and left fertilizer tanks 16. The front and rear flange portions 16a are bolted to fixing portions 15a connected to the front and rear support frames 15. As shown in FIGS. 1, 2 and 3, the right and left fertilizer tanks 16 are made of synthetic resin and are translucently configured in a vertically long shape. The right and left fertilizer tanks 16 are arranged along the front-rear direction.

  As shown in FIGS. 3, 14, and 15, the stirring blade 78 is rotatably supported around the vertical axis P <b> 1 at the center in the front-rear direction in the right and left fertilizer tanks 16, and the stirring blade 78 is driven to rotate. A motor 79 is provided between the support frames 63 at the bottom of the right and left fertilizer tanks 16. Thereby, the stirring blade 78 is rotationally driven by the electric motor 79 to stir the liquid fertilizer, thereby preventing the liquid fertilizer from solidifying.

  As shown in FIGS. 14, 15, and 16, front and rear brackets 65 having an inverted triangular shape when viewed from the front are connected downward to the front and rear portions of the support frame 63, and span the front and rear brackets 65. Upper and lower reinforcing rods 66 are connected. Below the left fertilizer tank 16, the first, second, third and fourth side pumps 80 a, 80 b, 80 c, 80 d and the first and second deep pumps 81 a, 81 b are left and right across the front and rear brackets 65. In a state of facing the direction, they are connected side by side in the front-rear direction (the direction along the longitudinal direction of the left fertilizer tank 16). As shown in FIG. 4, below the right fertilizer tank 16, the fifth, sixth, seventh and eighth side pumps 80e, 80f, 80g and 80h and the third and fourth deep pumps 81c and 81d In a state of being directed in the left-right direction across the bracket 65, they are connected side by side in the front-rear direction (the direction along the longitudinal direction of the right fertilizer tank 16).

  As shown in FIGS. 14, 15, and 16, the first to fourth side pumps 80 a to 80 d and the first and second deep pumps 81 a and 81 b communicate with each other inside, and from the lower front portion of the left fertilizer tank 16. The extended supply path 67 is connected to the foremost first deep layer pump 81a, and the supply paths 68 and 70 extended from the lower rear part of the left fertilizer tank 16 are connected to the last fourth side pump 80d. Has been. As shown in FIG. 4, the fifth to eighth side pumps 80 e to 80 h and the third and fourth deep pumps 81 c and 81 d communicate with each other inside and extend from the lower front portion of the right fertilizer tank 16. The supply path 67 is connected to the foremost fourth deep layer pump 81d, and the supply paths 68 and 70 extending from the rear lower part of the right fertilizer tank 16 are connected to the rearmost fifth side pump 80e.

  As shown in FIGS. 14, 15, and 16, the supply paths 67 and 68 are made of rubber hoses and configured in an elbow shape, and the supply path 70 is made of synthetic resin and configured in a T shape, and is obliquely outward from the supply path 70. A discharge path 70a extends toward the lower side (see FIG. 3). An opening / closing valve (not shown) is provided in the discharge path 70 a of the supply path 70, and an operation arm 70 b for operating the opening / closing valve is provided in the discharge path 70 a of the supply path 70.

  As a result, as shown in FIGS. 14, 15, and 16, the liquid fertilizer in the left fertilizer tank 16 is supplied to the suction unit 99 of the first deep layer pump 81 a via the supply path 67 and via the supply paths 68 and 70. Are supplied to the suction part 99 of the fourth side pump 80d and supplied to the suction parts 99 of the first to fourth side pumps 80a to 80d and the first and second deep pumps 81a and 81b. As shown in FIG. 4, the liquid fertilizer in the right fertilizer tank 16 is supplied to the suction portion 99 of the fourth deep pump 81d through the supply passage 67, and the fifth side pump 80e through the supply passages 68 and 70. Is supplied to the suction part 99 of the fifth to eighth side pumps 80e to 80h and the third and fourth deep pumps 81c and 81d.

[5]
Next, the first, second, third, fourth, fifth, sixth, seventh, eighth side nozzles 82a, 82b, 82c, 82d, 82e, 82f, 82g, 82h (corresponding to the supply section), and the first, second, The structure of the 3 and 4 deep nozzles 83a, 83b, 83c, and 83d (corresponding to the supply unit) will be described.
As shown in FIGS. 11 and 13, a support bracket 73 is connected to each transmission case 6, and the support shaft 74 is rotatable to the support bracket 73 so that the lower side of the transmission case 6 is on the right and left lateral sides. Supported. Brackets 74 a are provided at both ends of the support shaft 74, a bracket 74 b is provided at an intermediate portion of the support shaft 74, and the bracket 74 b of the support shaft 74 is bolted to the support bracket 73.

  As shown in FIGS. 11 and 13, pipe-like first and second side nozzles 82a and 82b (third and fourth side nozzles 82c and 82d) (fifth and fourth) are attached to the bracket 74a of the support shaft 74. 6 side nozzles 82e, 82f) (seventh and eighth side nozzles 82g, 82h) are connected, and the first to eighth side nozzles 82a-82h pass through the planting case 7 and the planting arm 8. The outlets of the first to eighth side nozzles 82a to 82h are arranged at a relatively shallow position in the rice field. As shown in FIG. 4, a supply hose 84 is connected across each of the first to eighth side strip pumps 80a to 80h and each of the first to eighth side strip nozzles 82a to 82h. By changing the position at which the bracket 74b of the support shaft 74 is bolted to the support bracket 73 and changing the angle of the support shaft 74 with respect to the support bracket 73, the positions of the outlets of the first to eighth side nozzles 82a to 82h Can be changed independently.

  As shown in FIGS. 11 and 12, support brackets 75 are connected to four locations of the support frame 64, and a support pipe 129 is rotatably supported around the horizontal axis P <b> 3 by the support bracket 75. A support bracket 76 is swingably supported around a shaft core P3 via a support pipe 129. The angle of the support bracket 76 relative to the support bracket 75 can be changed by connecting the support brackets 75 and 76 with bolts 77 through one of the plurality of openings 75 a formed in the support bracket 75. .

  As shown in FIGS. 11 and 12, a support bracket 69 is connected to the support pipe 129, and pipe-shaped first to fourth deep nozzles 83a to 83d are connected to each of the support pipes 129. As shown, a supply hose 85 is connected across each of the first to fourth deep layer pumps 81a to 81d and each of the first to fourth deep layer nozzles 83a to 82d.

  As shown in FIGS. 4 and 11, between the first and second side nozzles 82a and 82b, between the third and fourth side nozzles 82c and 82d, and between the fifth and sixth side nozzles 82e and 82f. The first to fourth deep layer nozzles 83a to 83d are arranged between the seventh and eighth side nozzles 82g and 82h, and the outlets of the first to fourth deep layer pumps 81a to 81d are the first to eighth side strips. It arrange | positions in the position deeper than the exit of the nozzles 82a-82h. In this case, the second and third deep layer nozzles 83b and 83c are disposed between the adjacent ground floats 9, and the first and fourth deep layer nozzles 83a and 83d pass through the long hole 9a opened in the ground float 9. It is extended.

  As shown in FIGS. 11 and 12, a spring 87 is connected across the receiving portion 69a of the support bracket 69 and the receiving portion 76a of the support bracket 76, so that the support bracket 69 and the first deep layer nozzle 83a ( The angles (positions) of the second, third, and fourth deep nozzles 83b, 83c, and 83d) are determined. As described above, by changing the angle of the support bracket 76 relative to the support bracket 75, the positions of the outlets of the first to fourth deep nozzles 83a to 83d can be independently changed up and down. When an obstacle hits the deep nozzles 83a to 83d from below, the first to fourth deep nozzles 83a to 83d escape upward while the spring 87 is compressed.

  As shown in FIGS. 1, 2, and 4, four supply hoses 84 and two supply hoses 85 on the left fertilizer tank 16 side (first to fourth side pumps 80a to 80d and first and second deep pumps 81a). , 81b and the first to fourth side nozzles 82a to 82d and the first and second deep nozzles 83a and 83b), two supply hoses 84 and two on the right fertilizer tank 16 side. Supply hose 85 (the fifth to eighth side pumps 80e to 80h and the third and fourth deep pumps 81c and 81d are connected to the fifth to eighth side nozzles 82e to 82h and the third and fourth deep nozzles 83c and 83d. Supply hoses 84, 85) and one top link 3a of the link mechanism 3, four supply hoses 84 on the left fertilizer tank 16 side and two supplies on the left side of the top link 3a of the link mechanism 3 Hose 85 Ri attached, to the right side of the top link 3a of the link mechanism 3, the supply hose 85 of the four supply hoses 84 to the right of the fertilizer tank 16 side and the two are attached. When the seedling planting device 5 is configured to be detachable from the link mechanism 3, a coupler 97 that can be connected and disconnected is provided in the top link 3 a portion of the link mechanism 3 in the supply hoses 84 and 85.

  With the above structure, as shown in FIG. 4 and FIG. 11, as described in [6] described later, with the seedling planting device 5, the first to eighth side pumps 80 a to 80 h and The first to fourth deep pumps 81a to 81d are driven, and the liquid fertilizer in the left fertilizer tank 16 passes through the first to fourth side nozzles 82a to 82d and the first and second deep nozzles 83a and 83b. The liquid fertilizer in the right fertilizer tank 16 is supplied to the relatively shallow position and deep position of the right side through the fifth to eighth side nozzles 82e to 82h and the third and fourth deep nozzles 83c and 83d. Supplied to shallow and deep positions.

[6]
Next, drive structures of the first to eighth side pumps 80a to 80h and the first to fourth deep pumps 81a to 81d will be described.
As shown in FIGS. 5 and 8, the first fertilization output shaft 88 is rotatably supported by the mission case 17, and the first fertilization output shaft 88 protrudes from the mission case 17 to the outside. The transmission gear 90 is fixed to the first fertilization output shaft 88, and the transmission gear 90 is engaged with the transmission gear 46 having the smallest diameter of the planting transmission mechanism 50.

  As shown in FIGS. 5 and 8, the support case 91 is fixed to the outside of the transmission case 17, and is concentric with the first fertilization output shaft 88 and is relatively rotatable, and the second fertilization output shaft 89 is the support case 91. Is supported rotatably. A shift member 92 is externally fitted to the second fertilization output shaft 89 in a spline structure so as to be integrally rotatable and slidable, and a spring 93 that biases the shift member 92 toward the first fertilization output shaft 88 and the shift member An operating shaft 94 for separating 92 from the first fertilizer output shaft 88 is provided, and a fertilizer clutch 95 is configured between the first fertilizer output shaft 88 and the shift member 92.

  As shown in FIGS. 2 and 3, a speed change mechanism 96 capable of shifting in multiple stages is fixed to the lower portion of the right step 13, and as shown in FIGS. 4, 5, 8, and 9, A transmission chain 98 is wound around the fixed output sprocket 89 a and the input sprocket 96 a of the speed change mechanism 96. As shown in FIGS. 2, 9, and 10, two shift shafts 96 d for shifting the speed change mechanism 96 project to the right side, and two operation levers 71 for sliding the shift shaft 96 d of the speed change mechanism 96 are operated. Are supported around the vertical axis P2 of the speed change mechanism 96 so as to be swingable.

  As shown in FIGS. 2, 9, and 10, an opening 13 a is formed in a portion located above the operation lever 71 in the right step 13, and the opening of the right step 13 in a side view (see FIG. 10). An operation lever 71 is disposed slightly below 13a, and a rubber step mat 72 is placed so as to cover the right and left step 13 (the opening 13a of the right step 13). . Normally, the opening 13a and the operation lever 72 of the right step 13 are hidden by the step mat 72, and the operation lever 71 is operated from the opening 13a of the right step 13 by turning up the step mat 72. A speed change operation of the speed change mechanism 96 is performed.

  As shown in FIGS. 3, 4, and 9, the left output shaft 96 b extends to the left side from the speed change mechanism 96, and the left output shaft 96 b of the speed change mechanism 96 is on the upper side of the support frame 18. Is extended to the vicinity of the fourth side pump 80d, and as shown in FIGS. 15 and 16, the transmission mechanism 96 is connected to the bearing portion 65a connected to the rear bracket 65. The left output shaft 96b is rotatably supported. The right output shaft 96c extends from the speed change mechanism 96 to the right side and extends to the vicinity of the fifth side pump 80e, and the speed change mechanism is connected to the bearing portion 65a connected to the rear bracket 65. 96 right output shaft 96c is rotatably supported.

  As shown in FIGS. 4, 15, and 16, the first to eighth side pumps 80 a to 80 h and the first to fourth deep pumps 81 a to 81 d include a rotor 100 that pumps liquid fertilizer and a drive shaft connected to the rotor 100. 101, a pair of transmission sprockets 102 that are externally fitted to the drive shaft 101 so as to be rotatable relative to each other, a shift member 103 that is externally fitted to the drive shaft 101 so as to be integrally rotated and slidable by a key structure, and the shift member 103 to the transmission sprocket 102 And a spring 104 or the like that is biased toward the occlusal side. The plug 106 is connected to the top of the discharge part 105 of the first to eighth side pumps 80 a to 80 h and the first to fourth deep pumps 81 a to 81 d, and the supply hoses 84 and 85 are connected to the plug 106.

  As shown in FIG.14 and FIG.15, the clogging sensor 107 which detects the pressure of the discharge part 105 of the 1st-8th side pumps 80a-80h and the 1st-4th depth pumps 81a-81d is the 1st-8th side stake. The pumps 80 a to 80 h and the first to fourth depth pumps 81 a to 81 d are provided at the lowermost part of the discharge unit 105, and the display unit 107 a (LED or the like) of the clogging sensor 107 is provided at the lower part of the clogging sensor 107. As a result, the display unit 107a of the clogging sensor 107 is provided on the right and left side of the aircraft, and an auxiliary operator on the right or left side of the aircraft can visually check the display unit 107a of the clogging sensor 107 relatively easily. can do.

  As shown in FIGS. 14, 15, and 16, the output sprocket 96 e is fixed to the end of the left output shaft 96 b of the speed change mechanism 96, and the transmission sprocket 102 of the fourth side pump 80 d and the left side of the speed change mechanism 96 A transmission chain 108 is wound around the output sprocket 96e of the output shaft 96b, and the transmission chain is extended across the transmission sprocket 102 of the first to fourth side pumps 80a to 80d and the first and second deep pumps 81a and 81b. 108 is wound. An output sprocket 96e is fixed to the end of the right output shaft 96c of the speed change mechanism 96, and extends across the transmission sprocket 102 of the fifth side pump 80e and the output sprocket 96e of the right output shaft 96c of the speed change mechanism 96. A transmission chain 108 is wound, and the transmission chain 108 is wound over the transmission sprockets 102 of the fifth to eighth side pumps 80e to 80h and the third and fourth deep pumps 81c and 81d.

  4, 5, 6, and 7, the power of the engine 19 is transferred to the right and left via the hydrostatic continuously variable transmission 21, the transmission shafts 22 and 26, the differential mechanism 29, and the transmission shaft 28. Is transmitted to the front wheel 1, and is transmitted to the right and left rear wheels 2 via the travel output shaft 34 and the transmission shaft 38. The hydrodynamic continuously variable transmission 21 has a one-way clutch 44, transmission gears 43 and 45, a planting transmission mechanism 50 (transmission gears 46 and 48), bevel gears 52 and 53, a planting clutch 57, an output shaft 51, and the like. It is transmitted to the seedling planting device 5 through the transmission shaft 58.

  As shown in FIGS. 4 and 5, the power between the one-way clutch 44 and the planting transmission mechanism 50 (transmission gear 46) (in the planting transmission mechanism 50, the operating rod 49 increases the power of the transmission shaft 26 to six stages. The power before being transmitted and transmitted to the transmission shaft 47) is the transmission gears 46, 90, the first fertilization output shaft 88, the fertilization clutch 95, the second fertilization output shaft 89, the transmission chain 98, the transmission mechanism 96, and the transmission chain. 108, the transmission sprocket 102 and the shift member 103 are transmitted to the first to eighth side pumps 80a to 80h and the first to fourth depth pumps 81a to 81d.

  As shown in FIGS. 4 and 15, the liquid fertilizer enters the suction parts 99 of the first to eighth side pumps 80 a to 80 h and the first to fourth deep pumps 81 a to 81 d, and the liquid fertilizer is rotated by the rotation of the rotor 100. The first to eighth side strip pumps 80a to 80h and the first to fourth depth pumps 81a to 81d are pumped to the discharge section 105 and are supplied from the plug 106 via the supply hoses 84 and 85 to the first to eighth side strip nozzles 82a. To 82h and the first to fourth deep nozzles 83a to 83d. By operating the speed change mechanism 96, the drive speeds of the first to eighth side pumps 80a to 80h and the first to fourth depth pumps 81a to 81d are changed, and the first to eighth side pumps 80a to 80h and the first The supply amount of the liquid fertilizer by the 1-4 deep layer pumps 81a-81d can be changed.

  In this case, as shown in FIG. 15, the plug 106 is connected to the uppermost part of the discharge part 105 of the first to eighth side pumps 80a to 80h and the first to fourth deep pumps 81a to 81d. Even if air stays in the suction part 99 and the discharge part 105 of the eight side pumps 80a to 80h and the first to fourth depth pumps 81a to 81d, the air is easily pumped from the plug 106 to the supply hoses 84 and 85. When clogging with liquid fertilizer occurs in the first to eighth side nozzles 82a to 82h, the first to fourth deep nozzles 83a to 83d, and the supply hoses 84 and 85, the first to eighth side bars in which clogging with liquid fertilizer occurs. Since the pressures of the discharge units 105 of the pumps 80a to 80h and the first to fourth depth pumps 81a to 81d increase, the display unit 107a of the clogging sensor 107 that detects the increase in pressure is turned on.

[7]
Next, the operation of the planting clutch 57 and the fertilization clutch 95 (see FIGS. 5, 7, and 8) will be described.
As shown in FIGS. 2, 3, and 19, an operation lever 117 is provided on the right side below the steering handle 116 that steers the right and left front wheels 1, and the operation lever 117 is located on the right side outward. It is extended to. The operation lever 117 includes a first ascending position U1 and a second ascending position U2 above the neutral position N, a first descending position D1 and a second descending position D2 below, a rear right marker position R and a front left marker position L. It is configured to be operable in the cross direction and is biased to the neutral position N, and the operation position of the operation lever 117 is input to the control device 118.

  As shown in FIG. 19, right and left markers (not shown) are provided on the right and left lateral sides of the seedling planting device 5, and the right and left markers are grounded on the rice field for the next operation. It is configured to be freely changeable to an action posture that forms a stroke index and a retracted posture that is separated upward from the rice field. An electric motor (not shown) is provided for operating the right and left markers to the action and retracted postures, and the control motor 118 operates the electric motor. An electric motor 119 for operating the planting clutch 57 in the transmission and disconnection state and an electric motor 120 for operating the fertilization clutch 95 in the transmission and disconnection state are provided, and the electric motors 119 and 120 are operated by the control device 118. .

  As shown in FIG. 19, when the operation lever 117 is operated to the second raised position U2 (operated to the second raised position U2 and operated to the neutral position N), the planting and fertilizing clutch 57, 95 is operated in the shut-off state, automatic elevating control described later is stopped, the right and left markers are operated in the retracted posture, and the seedling planting device 5 is driven up to the upper limit position. When the operation lever 117 is operated to the second descending position D2 (operating to the second descending position D2 and operating to the neutral position N), the seedling planting device 5 is driven to descend, and when the grounding float 9 comes into contact with the rice field, it automatically moves up and down. The control is activated, and the seedling planting device 5 comes into contact with the rice field and stops. After operating the operating lever 117 to the second lowered position D2 (after operating to the second lowered position D2 and to the neutral position N), if the operating lever 117 is operated again to the second lowered position D2, the electric motors 119, By 120, planting and fertilizing clutches 57 and 95 are operated in a transmission state.

In this case, automatic elevation control is performed as follows.
A rear portion of the center grounding float 9 is supported by the seedling planting device 5 so as to be swingable up and down, and a potentiometer (not shown) for detecting the height of the center grounding float 9 with respect to the seedling planting device 5 is provided. The detection value of the potentiometer is input to the control device 118. As the aircraft moves, the center ground float 9 follows the surface of the rice field. By detecting the height of the center ground float 9 relative to the seedling planting device 5 based on the detection value of the potentiometer, The height from the float 9) to the seedling planting device 5 can be detected. Thereby, based on the height of the center grounding float 9 with respect to the seedling planting device 5 (height from the surface (center grounding float 9) to the seedling planting device 5), the seedling planting device 5 is set from the surface. The hydraulic cylinder 4 is actuated and the seedling planting device 5 is automatically driven up and down to maintain the height (so that the detected value of the potentiometer is maintained at the set value).

  As shown in FIG. 19, when the operating lever 117 is operated to the right marker position R (operating to the right marker position R and operating to the neutral position N), the right marker is operated to the action posture. When 117 is operated to the left marker position L (when the left marker position L is operated and the neutral position N is operated), the left marker is operated to the action posture.

  As shown in FIG. 19, when the operating lever 117 is operated to the first ascending position U1, the planting and fertilizing clutches 57 and 95 are operated in the disconnected state by the electric motors 119 and 120, and the automatic lifting control is stopped. Then, the left marker 50 is operated to the retracted posture, and the seedling planting device 5 is driven up. In this case, the seedling planting device 5 is driven to rise only while the operating lever 117 is operated to the first raised position U1, and when the operating lever 117 is operated from the first raised position U1 to the neutral position N, the seedling The ascending drive of the planting device 5 stops.

  As shown in FIG. 19, when the operation lever 117 is operated to the first lowered position D1, the seedling planting device 5 is driven downward. In this case, the seedling planting device 5 is driven to descend only while the operating lever 117 is operated to the first lowered position D1, and when the operating lever 117 is operated from the first lowered position D1 to the neutral position N, the seedling The descending drive of the planting device 5 stops. Accordingly, by operating the operation lever 117 to the first ascending and first descending positions U1, D1, the link mechanism 3 (the seedling planting device 5) can be driven up and down to an arbitrary height and stopped.

[8]
After putting the liquid fertilizer into the empty right and left fertilizer tanks 16 before starting the planting operation, the operation of removing the mixed air is performed as follows.
On the road or the like, the seedling planting device 5 is supported by a stand (not shown) (planting and fertilization clutches 57 and 95 are in a disconnected state), and the first to eighth side nozzles 82a to 82h and the first to fourth. The liquid fertilizer that exits from the outlets of the deep nozzles 83a to 83d is received in a container (bucket or the like) (not shown).

  As shown in the preceding item [3] and FIGS. 5, 6 and 7, in the planting speed change mechanism 50, the operation rod 49 is slid to the position where the detent ball 62 engages with the concave portion 49c of the operation rod 49, In a state where the transmission gear 48 is not connected to the transmission shaft 47 (a state in which the transmission gear 48 is externally fitted so as to be relatively rotatable), the power of the transmission shaft 26 is blocked by the planting transmission mechanism 50. As shown in the preceding item [2], FIG. 5 and FIG. 6, the shift member 27 is slid to a neutral position (a position not engaged with both the low speed gear 24 and the high speed gear 25) (right and left front wheels 1, right and left). In a state where no power is transmitted to the left rear wheel 2), the hydrostatic continuously variable transmission 21 is operated forward.

  In the above state, as shown in the preceding item [7] and FIG. 19, the operation lever 117 is operated to the second lowered position D2 and then again moved to the second lowered position D2, and the planting and fertilizing clutches 57 and 95 are operated. Operate in the transmission state. As a result, as shown in FIGS. 4 and 5, the power of the output shaft 21 b and the transmission shaft 22 of the hydrostatic continuously variable transmission 21 is not transmitted to the right and left front wheels 1 and the right and left rear wheels 2. In the state and the state not transmitted to the seedling planting device 5, as described in [6] above through the fertilization clutch 95, the first to eighth side pumps 80a to 80h and the first to fourth deep pumps 81a to 81d Is transmitted to. Accordingly, the first to eighth side stripe pumps 80a to 80h and the first to fourth depth pumps 81a to 81d, the supply hoses 84 and 85, the first to eighth side stripe nozzles 82a to 82h, and the first to fourth depth nozzles 83a to 83d. The air mixed in is discharged from the first to eighth side nozzles 82a to 82h and the first to fourth deep nozzles 83a to 83d together with the liquid fertilizer, and the liquid fertilizer is collected in the container.

  In this case, as shown in FIG. 15, the plug 106 is connected to the uppermost part of the discharge part 105 of the first to eighth side pumps 80a to 80h and the first to fourth deep pumps 81a to 81d. Even if air stays in the suction part 99 and the discharge part 105 of the eight side pumps 80a to 80h and the first to fourth depth pumps 81a to 81d, the air is easily pumped from the plug 106 to the supply hoses 84 and 85. When clogging with liquid fertilizer occurs in the first to eighth side nozzles 82a to 82h, the first to fourth deep nozzles 83a to 83d, and the supply hoses 84 and 85, the first to eighth side bars in which clogging with liquid fertilizer occurs. Since the pressures of the discharge units 105 of the pumps 80a to 80h and the first to fourth depth pumps 81a to 81d increase, the display unit 107a of the clogging sensor 107 that detects the increase in pressure is turned on.

When recovering the liquid fertilizer remaining in the right and left fertilizer tanks 16 after the planting operation is completed, a container (bucket or the like) (not shown) is provided below the discharge path 70a of the supply path 70 shown in FIGS. ) And the open / close valve is opened by the operating arm 70b of the supply path 70, and the liquid fertilizer remaining in the right and left fertilizer tanks 16 is discharged from the discharge path 70a of the supply path 70 and collected.
When the recovery of the liquid fertilizer remaining in the right and left fertilizer tanks 16 is completed, water is poured into the right and left fertilizer tanks 16 and the output shaft 21b and the transmission of the hydrostatic continuously variable transmission 21 are transmitted as described above. The power of the shaft 22 is not transmitted to the right and left front wheels 1, the right and left rear wheels 2, and is not transmitted to the seedling planting device 5, and is described in [6] above via the fertilizer clutch 95. Thus, the first to eighth side pumps 80a to 80h and the first to fourth deep pumps 81a to 81d are transmitted. Accordingly, the first to eighth side stripe pumps 80a to 80h and the first to fourth depth pumps 81a to 81d, the supply hoses 84 and 85, the first to eighth side stripe nozzles 82a to 82h, and the first to fourth depth nozzles 83a to 83d. Can be cleaned inside.

[9]
Next, a stop operation structure of the first to eighth side pumps 80a to 80h and the first to fourth deep pumps 81a to 81d will be described.
As shown in FIGS. 15 and 16, a support pin 109 is attached laterally on each of the first to eighth side pumps 80 a to 80 h and the first to fourth depth pumps 81 a to 81 d, and The operation arm 110 is supported in a swingable manner, and each of the operation arms 110 is engaged with each of the shift members 103.

  As shown in FIGS. 1, 2, and 19, the first, second, third, and fourth clutch levers 111a, 111b, 111c, and 111d are provided on the rear side of the driver seat 11, and the first to fourth clutch levers 111a to 111d are provided. The inners of two release wires 112a, 112b, 112c, and 112d are connected to each. As shown in FIGS. 14, 15, and 17, the first and second clutch levers 111a and 111b are connected to the bracket 130 connected to the lower portions of the first to fourth side pumps 80a to 80d and the first and second deep pumps 81a and 81b. The outer wires of the release wires 112a and 112b are connected to the bracket 130 connected to the lower portions of the fifth to eighth side pumps 80e to 80g and the third and fourth deep pumps 81c and 81d. The outer wires of 111d release wires 112c and 112d are connected.

As shown in FIGS. 15, 17, and 19, the inner part of the release wire 112 a of the first clutch lever 111 a is connected to the first and second side pumps 80 a and 80 b and the first through the connection member 113 having a long hole 113 a. It is connected to the operation arm 110 of the deep layer pump 81a.
The inner part of the release wire 112b of the second clutch lever 111b is connected to the operation arm 110 of the third and fourth side pumps 80c and 80d and the second deep layer pump 81b via a connecting member 113 having a long hole 113a. Yes.
The inner part of the release wire 112c of the third clutch lever 111c is connected to the operation arm 110 of the fifth and sixth side pumps 80e and 80f and the third deep layer pump 81c via the connecting member 113 having the long hole 113a. Yes.
The inner part of the release wire 112d of the fourth clutch lever 111c is connected to the operating arm 110 of the seventh and eighth side pumps 80g and 80h and the fourth deep layer pump 81d via a connecting member 113 having a long hole 113a. Yes.

  Accordingly, as shown in FIGS. 15 and 19, when the first to fourth clutch levers 111a to 111d are operated to the transmission position, the shift member 103 is engaged with the transmission sprocket 102, as described in [6] above. The first to eighth side pumps 80a to 80h and the first to fourth deep pumps 81a to 81d are driven.

  For example, when the first clutch lever 111a is operated to the cutoff position, the release wire 112a is pulled, and the operating arm 110 causes the shift members 103 of the first and second side pumps 80a and 80b and the first deep pump 81a to move to the transmission sprocket 102. The first and second side pumps 80a and 80b and the first deep layer pump 81a are stopped. Similarly, the third and fourth side pumps 80c and 80d and the second deep layer pump 81b can be stopped by the second clutch lever 111b. The fifth and sixth side pumps 80e and 80f and the third deep layer pump 81c can be stopped by the third clutch lever 111c. The seventh and eighth side pumps 80g and 80h and the fourth deep layer pump 81d can be stopped by the fourth clutch lever 111c.

  As shown in FIGS. 15, 16, and 18, an operation member 114 formed of a piano wire is provided below each of the operation arms 110 of the first to eighth side pumps 80 a to 80 h and the first to fourth deep pumps 81 a to 81 d. Are connected, and the operation member 114 extends upward while being applied to the support pin 109. A cover 115 covering the transmission sprocket 102, the operation arm 110, and the like is connected to the support frame 63, and a connecting member 114 is passed through a lever guide 115a opened in the cover 115 and extends upward.

  As shown in FIGS. 15, 16, and 18, when the operation arm 110 is swung by operating the first to fourth clutch levers 111 a to 111 d to the transmission and disconnection positions, the operation member 114 is moved to the lever of the cover 115. It moves along the guide 115a. When the upper part of the operation member 114 is held by hand and moved downward in FIG. 15 and FIG. 18, the operation arm 110 is swung and the shift member 103 is moved away from the transmission sprocket 102. By engaging the lever 114 with the lever guide 115 a of the cover 115, the shift member 103 can be held in a state of being operated away from the transmission sprocket 102. As a result, the first to eighth side pumps 80a to 80h and the first to fourth deep pumps 81a to 81d are independently stopped by the operation member 114 regardless of the first to fourth clutch levers 111a to 111d. Can do.

[10]
Next, the first, second, third, and fourth minority clutches 121a, 121b, 121c, and 121d, the first, second, third, and fourth longitudinal feed clutches 122a, 122b, 122c, and 122d, and the first to eighth side-pipe pumps 80a. ˜80h and the linkage state with the first to fourth deep layer pumps 81a to 81d will be described.
As shown in FIGS. 2 and 19, first to fourth minority clutches 121 a to 121 d are provided in order from the left transmission case 6 on the support portion of each planting case 7 of the transmission case 6. The first to fourth minority clutches 121a to 121d operate and stop the two planting cases 7 by operating the power to the two planting cases 7 in a transmission case 6 in a transmission state and a cut-off state.

  As shown in FIGS. 2 and 19, a pair of endless rotating belt type vertical feed mechanisms 123 are provided on each of the seedling setting surfaces of the seedling setting table 10, and two adjacent seedlings of the seedling setting table 10 are provided. The vertical feed mechanism 123 on the mounting surface is configured to operate integrally, and four sets of four vertical feed mechanisms 123 that operate integrally are provided. When the seedling platform 10 reaches the right and left reciprocating lateral feed drive limit, the vertical feed mechanism 123 is driven by a predetermined amount, and the seedling placed on the seedling platform 10 is placed below the seedling platform 10. Sent. For the four sets of vertical feed mechanisms 123, first to fourth vertical feed clutches 122a to 122d are provided in order from the left, and the first to fourth vertical feed clutches 122a to 122d are adjacent to the seedling platform 10 2. The vertical feed mechanism 123 of the two seedling surfaces adjacent to each other of the seedling platform 10 is operated and stopped by operating power to the seedling surface vertical feeding mechanism 123 in a transmission and shut-off state.

In this case, as shown in FIG. 19, the electric motor 124 operates the first to fourth minority clutches 121 a to 121 d and the first to fourth longitudinal feed clutches 122 a to 122 d to be in a transmission and disconnected state.
The first and second side pumps 80a and 80b and the first deep pump 81a correspond to the first minority clutch 121a and the first longitudinal feed clutch 122a. The third and fourth side pumps 80c and 80d and the second deep pump 81b correspond to the second minority clutch 121b and the second longitudinal feed clutch 122b. The fifth and sixth side pumps 80e and 80f and the third deep pump 81c correspond to the third minority clutch 121c and the third longitudinal feed clutch 122c. The seventh and eighth side pumps 80g and 80h and the fourth deep pump 81d correspond to the fourth minority clutch 121d and the fourth longitudinal feed clutch 122d.

As shown in FIG. 19, a limit switch 125 that detects that the first to fourth clutch levers 111 a to 111 d are operated to the cutoff position is provided, and a detection signal of the limit switch 125 is input to the control device 118. Yes.
Accordingly, as described in [9] above, when the first clutch lever 111a is operated to the transmission position, the first and second side pumps 80a and 80b and the first deep pump 81a are driven, and the first minority clutch 121a and the first longitudinal feed clutch 122a are operated to the transmission state, and when the first clutch lever 111a is operated to the cutoff position, the first and second side pumps 80a and 80b and the first deep layer pump 81a are stopped, The first small number of clutches 121a and the first longitudinal feed clutch 122a are operated to the disengaged state. This operation is similarly performed in the second, third, and fourth clutch levers 111b, 111c, and 111d.

[First Alternative Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention], as shown in FIG. 7, the operating rod 49 is slid to the position where the detent ball 62 is engaged with the recess 49c of the operating rod 49, and all the transmission gears are operated. The configuration for obtaining a state in which 48 is not connected to the transmission shaft 47 (a state in which the shaft 48 is externally fitted so as to be relatively rotatable) may be eliminated, and a configuration as shown in FIG.

As shown in FIG. 20, there are provided a change-over switch 126 that can be operated in an interlocking and non-interlocking position, a push-on / push-off type planting clutch switch 127, and a push-on / push-off type fertilizing clutch switch 128. Operation signals of the changeover switch 126 and planting and fertilization clutch switches 127 and 128 are input to the control device 118.
Thus, when the changeover switch 126 is operated to the interlocking position, the electric motor 119 is operated by operating the operation lever 117 to the second raised position U2 and the second lowered position D2, as described in [7] above. 120, the planting and fertilizing clutches 57 and 95 are simultaneously operated to be in a transmission state and simultaneously to a shut-off state.

  As shown in FIG. 20, when the changeover switch 126 is operated to the non-interlocking position, the planting clutch switch 127 is operated in the state where the operation lever 117 is operated to the neutral position N, so that the planting is performed by the electric motor 119. Only the clutch 57 can be operated in the transmission and disconnection state, and only the fertilization clutch 95 can be operated in the transmission and disconnection state by the electric motor 120 by operating the fertilization clutch switch 128. In this state where the changeover switch 126 is operated to the non-interlocking position, after the liquid fertilizer is put into the empty right and left fertilizer tanks 16 before the start of the planting work as described in [8] above. The work of removing the mixed air may be performed.

[Second Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention] [First Another Mode of Carrying Out the Invention], an 8-row planting seedling planting device 5 is shown. On the other hand, in the 6-row planting type seedling planting device 5, as shown in FIG. 21, six first to sixth side-row pumps 80a to 80f and three first, second, and third depth pumps 81a. , 81b, 81c, six first to sixth side nozzles 82a to 82f, three first, second and third deep nozzles 83a, 83b, 83c, and three grounding floats 9 having long holes 9a. ing.

  In the five-row planting type seedling planting device 5, as shown in FIG. 22, five first to fifth side pumps 80a to 80e and three first, second and third deep pumps 81a, 81b, 81c, Five first to fifth side nozzles 82a to 82e, three first, second and third deep nozzles 83a, 83b and 83c, two grounding floats 9 having long holes 9a, and long holes 9a One grounding float 9 is provided.

  The present invention can be applied not only to a riding-type rice transplanter that uses liquid fertilizer, but also to a riding-type rice transplanter that uses liquid chemicals, powdered fertilizers and chemicals.

Overall side view of riding rice transplanter Overall plan view of riding rice transplanter Overall front view of riding rice transplanter Engine, hydrostatic continuously variable transmission, transmission case, transmission mechanism, first to eighth side pumps and first to fourth deep pump transmission systems (agricultural supply body transmission system), and first to eighth side pumps And the figure which shows the connection state of the 1st-4th deep layer pump, the 1st-8 side nozzle, and the 1st-4th deep layer nozzle Engine, hydro-hydraulic continuously variable transmission, transmission case, seedling planting device transmission system (planting transmission system), and transmission mechanism, first to eighth side pumps and first to fourth deep pump transmission systems ( Agricultural supply body transmission system) Cross-sectional plan view of the mission case Transverse plan view near the output shaft of the mission case Cross-sectional plan view of the mission case near the first and second fertilizer output shafts Plan view of the vicinity of the speed change mechanism Side view of the vicinity of the speed change mechanism Side view of seedling planting device Exploded perspective view showing support structure of first to fourth deep nozzles The top view which shows the support structure of the 1st-8 side strip nozzle Side view of the left fertilizer tank, first to fourth side pumps, and first and second deep pumps Longitudinal front view near the left fertilizer tank, first to fourth side pumps, and first and second deep pumps Plan view of the vicinity of the first to fourth side pumps and the first and second deep pumps Bottom view of the vicinity of the operation arm and bracket of the first to eighth side pumps and the first to fourth deep pumps Side view of the vicinity of the cover and operation member of the first to eighth side pumps and the first to fourth deep pumps The figure which shows the linkage state of a 1st-8 side strip pump and the 1st-4th deep layer pump, a planting clutch, a fertilizer clutch, a 1st-4th minority strip clutch, and a 1st-4th longitudinal feed clutch. In the first alternative embodiment of the invention, the first to eighth side pumps and the first to fourth depth pumps, the planting clutch, the fertilizer clutch, the first to fourth minority clutches, and the first to fourth longitudinal feed clutches are linked. Figure showing In the second alternative embodiment of the invention, the first to sixth side pumps and the first, second and third depth pumps, the first to sixth side nozzles and the first and second pumps of the six-row planting seedling planting apparatus. , 3 Diagram showing the connection state with the deep nozzle In the second alternative embodiment of the invention, the first to fifth side pumps and the first, second and third depth pumps, the first to fifth side nozzles and the first and second pumps of the five-row planting device. , 3 Diagram showing the connection state with the deep nozzle

Explanation of symbols

16 storage part 67,68,70 supply path 70a discharge path 80a-80h, 81a-81d delivery part 82a-82h, 83a-83d supply part 84,85 supply hose 105 discharge part 107 clogging sensor 107a clogging sensor display part

Claims (7)

A storage section for storing the liquid agricultural supply body, a supply section for feeding out the liquid agricultural supply body in the storage section, and a supply section for supplying the liquid agricultural supply body from the supply section to the rice field, A feeding part is provided below the storage part, a supply path extended from the storage part is connected to the feeding part, a supply hose is connected across the feeding part and the supply part,
The liquid agricultural supply body of the storage unit is supplied to the supply unit via the supply path, and is configured to be supplied from the supply unit to the supply unit via the supply hose,
A paddy field work machine provided with an openable and closable discharge path in the supply path.   The paddy field machine according to claim 1, wherein the plurality of feeding portions are arranged side by side along the longitudinal direction of the storage portion.   The paddy field work machine according to claim 2, wherein a plurality of feeding portions arranged side by side along the longitudinal direction of the storage portion are communicated with each other, and a supply path is connected to one end of the plurality of feeding portions. . A plurality of feeding portions arranged side by side along the longitudinal direction of the storage portion communicate with each other,
The storage section includes two supply paths, one supply path is connected to one end of the plurality of feeding sections, and the other supply path is connected to the other end of the plurality of feeding sections. The paddy field machine according to claim 2.   5. The storage unit, the feeding unit, the supply path, and the discharge path are provided on the right or left side of the machine body, and the discharge path is directed obliquely outward and downward. 5. Paddy field machine.   The clogging sensor of a liquid agricultural supply body is provided in the discharge part of the supply part by which a liquid agricultural supply body is supplied to the supply hose from the said supply part. Paddy field machine.   The paddy field work machine according to claim 6, wherein a display section for displaying detection of clogging by the clogging sensor is provided on the right or left side of the machine body.

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