JP2007274979A - Paddy working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To compose the whole compact and to smoothly perform operation of clutches for a small number of rows when desired clutches for the small number of rows are composed so as to be subjected to operation and operated to a stopped state on the basis of operation of clutch operation tools by a driving mechanism in a paddy working machine. <P>SOLUTION: The paddy working machine is equipped with rotated and driven cam members 51-54, operation parts 51a, 52a, 53a and 54a for all the rows in which all the clutches for the small number of rows are operated in an operative state, a plurality of right stopping parts 51b, 52b and 53b in which the clutches for the small number of rows at the right end are successively operated to the stopped state of the clutches for the small number of rows on the left side and a plurality of left stopping parts 52c, 53c and 54c in which the clutches for the small number of rows at the left end are successively operated to the stopped state of the clutches for the small number of rows on the right side and a stopping part 54b for all the rows in which all the clutches for the small number of rows are operated to the stopped state in the cam members 51-54. The stopping part 54b for all the rows is arranged adjacently to a part most separated from the operation parts 51a, 52a, 53a and 54a for all the rows in the plurality of right or left stopping parts 52c, 53c and 54c. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a structure of a small number of clutches in a paddy field machine.

  A riding type rice transplanter, which is an example of a paddy field work machine, includes a plurality of planting arms (14 in FIG. 3 of Patent Document 1) (corresponding to a working unit), as disclosed in Patent Document 1, for example, and a small number. There are some which have a plurality of small number of clutches (17 and 18 in FIG. 3 and FIG. 4 of Patent Document 1) that can freely operate and stop the planting arm (for example, in a 10-row planting type rice transplanter) There is a small number of clutches that can freely operate and stop the planting arms of two adjacent planting strips, and there are five such minority clutches).

In Patent Document 1, an operating member (33 in FIGS. 4 and 5 of Patent Document 1) supported so as to be linearly movable, and an electric motor (34 in FIGS. 4 and 5 in Patent Document 1) (drive) (drive) Equivalent to a mechanism), a plurality of operation portions (32 in FIGS. 4 and 5 of Patent Document 1) contacting the operating member, and a linkage mechanism (FIG. 1 of Patent Document 1) that mechanically links the operation portion and the minority number clutch. 4, 28, 29), an artificially operated clutch operating tool (38 in FIG. 4 of Patent Document 1), and control means for operating the electric motor based on the operation of the clutch operating tool (see FIG. 4 of Patent Document 1). 36).
Thus, when the driver operates the clutch operating tool, the electric motor is operated by the control means, the operating member moves linearly along the longitudinal direction, the operating unit is operated by the operating member, and the operating unit and the linkage mechanism are operated. The desired small number of clutches are operated to the activated and deactivated states.

Japanese Patent Laid-Open No. 11-89345 (FIGS. 3, 4, and 5)

In Patent Document 1, the operation member is linearly moved along the longitudinal direction so that the operation unit is operated. Therefore, a space for disposing the operation member is relatively large. There is room for improvement.
In this case, in Patent Document 1, when the operating member itself is configured to be small in order to reduce the space for disposing the operating member (33 in FIGS. 4 and 5 of Patent Document 1), a plurality of operation units are provided. (32 in FIG. 4 and FIG. 5 of Patent Document 1) must be arranged with a narrow interval, and accordingly, the width of the portion of the operating member that operates the operating portion becomes narrow. As a result, the slope of the portion of the operating member that operates the operating portion becomes steep, and it is considered that the operation of the operating portion by the operating member (operation of the minority clutch) is difficult to be performed smoothly.

  In the paddy field work machine, when the desired minority clutch is operated to be activated and stopped by the drive mechanism on the basis of the operation of the manually operated clutch operation tool, the whole is compact. It aims at comprising, and it aims at comprising so that operation of a minority number clutch may be performed smoothly.

[I]
(Constitution)
The first feature of the present invention resides in the following configuration in a paddy field machine.
A working section for performing work on the surface is provided according to the working condition, and a plurality of minority clutches that can be operated and stopped by a small number of working parts are provided. A cam member; a drive mechanism that rotationally drives the cam member; and a clutch operation tool that is manually operated. The cam mechanism moves the cam member in the first direction and the first direction based on the operation of the clutch operation tool. Is rotated in the opposite second direction, and the minority clutch is operated to be in an activated and stopped state by a cam member.
The all-strip actuating part in which all the minority clutches are operated and the cam member is driven to rotate in the first direction, so that the minority clutch on the left side is operated in a stopped state sequentially from the minority clutch on the right end. A plurality of right stop portions, a plurality of left stop portions in which the right side minority clutch is operated in a stopped state sequentially from the leftmost minority clutch by rotating the cam member in the second direction, and all minority items The cam member includes an all-strip stop portion where the clutch is operated in a stopped state.
In the cam member, a plurality of right stop portions are sequentially arranged on one side from the entire strip operation portion, a plurality of left stop portions are sequentially disposed on the other side from the full strip operation portion, and a plurality of right or left stop portions are arranged. Place the full-line stop part next to the part farthest from the full-line operation part.

(Function)
According to the first feature of the present invention, a rotatable cam member is provided, the cam member is driven to rotate by a drive mechanism, and the minority clutch is operated by the cam member. As a result, as in Patent Document 1, the present invention is compared with the configuration in which the actuating member (33 in FIGS. 4 and 5 in Patent Document 1) is linearly moved along the longitudinal direction to operate the minority clutch. As described in the first feature, when the cam member is rotationally driven to operate the minority clutch, the space for arranging the cam member is small.

  As described above, when the minority clutch is operated by rotationally driving the cam member, the full-strand operating portion where all the minority clutches are operated and the cam member is rotationally driven in the first direction. As a result, a plurality of right stop portions are operated so that the left minority clutch is sequentially stopped from the rightmost minority clutch, and the cam member is rotationally driven in the second direction so that the leftmost minority clutch is sequentially rightward. It is conceivable that the cam member is provided with a plurality of left stop portions that are operated in a stopped state.

In this case, it is considered that the left-side minority clutch is operated in a stopped state sequentially from the right-most minority clutch, and finally, all the minority clutches are operated in a stopped state. It is done. Conversely, it is conceivable that the right-side minority clutch is operated in a stopped state sequentially from the leftmost minority clutch, and finally, all the minority clutches are operated in a stopped state. .
If comprised in this way, in a cam member, it will be necessary to provide two full-line stop parts corresponding to one full-line operation part, a plurality of right and left stop parts, and two full-line stop states. In the cam member that is rotationally driven, the operation range is limited to a range of 360 degrees, and therefore, as described above, the cam member includes one full-line operation part, a plurality of right and left stop parts, and two full-line stop parts. It is conceivable that the range (angle range) of one portion for operating the minority clutch becomes small, and the manipulation of the minority clutch is not smooth.

According to the first feature of the present invention, in the cam member, a plurality of right stop portions are sequentially arranged on one side from the full-line operation portion, and a plurality of left stop portions are sequentially arranged on the other side from the full-line operation portion. , A full stop portion is arranged next to a portion of the plurality of right or left stop portions that is farthest from the full strip operation portion, one full strip operation portion, a plurality of right and left stop portions, and one full strip It has a stop part.
Thus, as described above, according to the first feature of the present invention, the full-line stop portion is compared with the configuration in which the cam member includes one full-line operation portion, a plurality of right and left stop portions, and two full-line stop portions. Therefore, it is possible to avoid a state where the range (angle range) of one part operating the minority clutch becomes small, and avoid a situation where the minority clutch operation is not smooth. Can do.

(The invention's effect)
According to the first feature of the present invention, the paddy field work machine is configured such that a desired minority number of clutches is operated in an activated and stopped state by a drive mechanism based on an operation of a manually operated clutch operating tool. In this case, the space for arranging the cam member can be reduced, and the overall size can be reduced.

  According to the first feature of the present invention, in the cam member, it is possible to avoid a state in which the range (angle range) of one portion operating the minority clutch becomes small, and the minority clutch operation is not smooth. Since the state can be avoided (the operation of the minority clutch is smoothly performed), the operability of operating the minority clutch in the activated and stopped states can be improved.

[1]
As shown in FIGS. 1 and 2, an engine 3 and a transmission case 4 are provided at the front of the aircraft supported by the front wheels 1 and the rear wheels 2, and a four-link type link mechanism 6 is hydraulically installed at the rear of the aircraft. The seedling planting device 7 is supported by the link mechanism 6 so as to be movable up and down by the cylinder 14, and a riding type rice transplanter which is an example of a paddy field working machine is configured.

  As shown in FIGS. 1 and 2, the seedling planting device 7 is configured in an eight-row planting type, and includes one feed case 15 (see FIG. 3), four transmission cases 8, and a right side of the transmission case 8. And a rotating case 9 (corresponding to a working part) supported rotatably on the left side, a pair of planting arms 10 (corresponding to the working part) supported at both ends of the rotating case 9, a grounding float 11, a seedling bed 12 A vertical feed mechanism 13 (corresponding to a working unit) that feeds the seedling placed on the seedling platform 12 to the lower part of the seedling platform 12 is provided.

  As shown in FIGS. 1 and 3, a feed case 15 is supported at the lower part of the rear portion of the link mechanism 6 so as to be able to roll around the front and rear axis, and the power of the engine 3 is supplied by a planting clutch (not shown) and a PTO. It is transmitted to the feed case 15 via the shaft 18. A lateral support frame 16 is fixed to the feed case 15, and the four transmission cases 8 are fixed to the support frame 16 in a cantilevered manner so that the transmission is transmitted across the feed case 15 and the four transmission cases 8. A shaft 17 is connected.

  Thereby, as shown in FIGS. 1 and 3, the power of the engine 3 is transmitted to the PTO shaft 18, the feed case 15, the transmission shaft 17, the transmission case 8, and the transmission chain (not shown) arranged inside the transmission case 8. The rotation case 9 is driven to rotate, and the planting arm 10 alternately takes out the seedlings from the lower part of the seedling base 12 and plants them on the rice field.

[2]
Next, the first, second, third, and fourth planting arm clutches 19a, 19b, 19c, and 19d (corresponding to a small number of clutches) will be described.
As shown in FIG. 3, first to fourth planting arm clutches 19 a to 19 d are provided in order from the right transmission case 8 on the support portion of the rotation case 9 in the transmission case 8. The first to fourth planting arm clutches 19a to 19d operate to stop and operate the two rotating cases 9 by transmitting and interrupting power to the two rotating cases 9 in one transmission case 8. (Not shown) is urged to the operating state.

  Thereby, as shown in FIG. 3, for example, when the first planting arm clutch 19a is operated in a stopped state, the two rotating cases 9 of the rightmost transmission case 8 are stopped. When the first to fourth planting arm clutches 19a to 19d are operated in a stopped state, the rotating case is in a state where both of the pair of planting arms 10 are located above the rice field (for example, the rotating case 9 is parallel to the rice field). 9 is configured to stop. Thus, each of the first to fourth planting arm clutches 19a to 19d corresponds to two adjacent planting strips (corresponding to work strips).

[3]
Next, the seedling bed 12, the vertical feed mechanism 13, and the first, second, third, and fourth vertical feed clutches 24a, 24b, 24c, and 24d (corresponding to a small number of clutches) will be described.
As shown in FIGS. 2, 3, 4, and 7, the support rail 23 is supported across the transmission case 8, and the lower portion of the seedling support 12 is supported so as to be movable in the left-right direction along the support rail 23. The right and left support frames 25 extend upward from the right and left sides of the support frame 16, and the support frame 26 is fixed over the upper portions of the right and left support frames 25. A roller 28 is rotatably supported by rods 27 fixed to a plurality of locations of the support frame 26, and a support frame 29 having a U-shaped cross section is fixed along the front side of the upper portion of the seedling platform 12. Is inserted inside the support frame 29. Thereby, the seedling base 12 is supported so as to be movable in the left-right direction along the support rail 23.

  As shown in FIG. 3, the spiral shaft 20 extends from the feed case 15, the spiral shaft 20 is rotatably supported, and a feed member 22 is externally fitted to the spiral shaft 20. The member 22 is fixed via the bracket 21. Thus, the spiral shaft 20 is driven to rotate by the power of the feed case 15, and the feed member 22 is driven to reciprocally move laterally along the spiral shaft 20, and the seedling bed 12 is moved along the support rail 23. Driven back and forth to the left and right.

  As shown in FIGS. 2, 3, and 4, a pair of endless rotating belt type vertical feed mechanisms 13 are provided on each of the seedling setting surfaces of the seedling setting table 12, and two adjacent two of the seedling setting tables 12 are adjacent to each other. The vertical feed mechanism 13 for the seedling surface is configured to operate integrally, and four sets of two vertical feed mechanisms 13 that operate integrally are provided. When the seedling platform 12 reaches the movement limit of the right and left reciprocating lateral feed driving, the vertical feed mechanism 13 is driven by a predetermined amount, and the seedling placed on the seedling platform 12 is placed below the seedling platform 12. Sent.

  As shown in FIGS. 3 and 4, the first, second, third, and fourth vertical feed clutches 24 a, 24 b, 24 c, and 24 d are provided in order from the right for the four sets of vertical feed mechanisms 13. The first to fourth vertical feed clutches 24a to 24d transmit power to and cut off power from the vertical feed mechanism 13 of the two seedling setting surfaces adjacent to the seedling setting table 12, so that the two seedling setting surfaces of the seedling setting table 12 are adjacent to each other. The vertical feed mechanism 13 is operated and stopped, and is urged to an operating state by a spring (not shown). Thereby, for example, when the first vertical feed clutch 24a is operated to the stop state, the vertical feed mechanisms 13 of the two rightmost seedling setting surfaces of the seedling setting base 12 are stopped. Thus, each of the first to fourth vertical feed clutches 24a to 24d corresponds to two adjacent planting strips.

[4]
Next, a hopper 32 for storing fertilizer, and a plurality of feeding sections 31 and feeding sections 31 that can supply the fertilizer in the hopper 32 to the planting strips corresponding to the first to fourth planting arm clutches 19a to 19d. The first, second, third, and fourth fertilization clutches 38a, 38b, 38c, and 38d will be described.
As shown in FIGS. 5 and 18 (a), wall-like support frames 76 are fixed to the rear portions of the right and left airframe frames 50, and the upper frames extend over the upper portions of the rear portions of the right and left support frames 76. 78, the link mechanism 6 and the hydraulic cylinder 14 are supported at the rear of the right and left support frames 76, and the driver seat 5 is at the front of the right and left support frames 76, as shown in FIG. It is supported.

  As shown in FIGS. 5 and 18 (a), the base frame 79 is fixed to the upper frame 78 by bolts 83, and the support frame 30 is fixed to the support column 80 fixed to the base frame 79. Are arranged in the left-right direction behind the driver seat 5. As shown in FIGS. 1, 2, and 5, four feeding portions 31 corresponding to two planting strips are fixed to the support frame 30, and four hoppers 32 made of transparent resin and storing fertilizer are fed. It is fixed over the part 31. Eight groovers 35 that form grooves on the side of the seedling (planting strip) planted by the planting arm 10 are prepared for each planting strip and are fixed to the grounding float 11. Two groovers 35 and one feeding part 31 are connected via a hose 36.

  Accordingly, as shown in FIGS. 5 and 18 (a) and 18 (b), by removing the bolt 83 that fixes the base frame 79 to the upper frame 78, the base frame 79, the support column 80, the support frame 30, and the four The feeding part 31 and the hopper 32 can be removed integrally. In this case, instead of the bolt 83, the base frame 79 may be fixed to the upper frame 78 with a buckle or the like.

  As shown in FIGS. 5 and 13, each of the feeding portions 31 is provided with a feeding roll 31 a, five brackets 30 a are fixed to the support frame 30, and one driving shaft 37 extends over the feeding portion 31. As described above, the support frame 30 is rotatably supported by the opening of the bracket 30a. The first, second, third, and fourth fertilization clutches 38a, 38b, 38c, and 38d that operate and stop the feeding portion 31 by connecting and releasing the drive shaft 37 and the feeding roll 31a of the feeding portion 31 are the feeding portion 31. The first to fourth fertilization clutches 38a to 38d are positioned in the vicinity of the bracket 30a of the support frame 30, and the first to fourth fertilization clutches 38a to 38d are urged to an operating state by a spring 38e. ing.

  As shown in FIGS. 5 and 13, the one-way clutch 33 is externally fitted to the drive shaft 37, and the one-way clutch 33 and the output shaft 77 branched from immediately before the rear axle case 34 (see FIG. 1) that supports the rear wheel 2. The connecting rod 39 is connected over the distance. A blower 40 is provided on the lower side of the driver's seat 5, and pipes 41 extend from the blower 43 to the left and right along the support frame 30. A mouth (not shown) is formed, and the air blowing port of the feeding portion 31 is inserted into the pipe 41.

  Thus, as the seedling platform 12 is driven to reciprocate laterally to the left and right, the rotary case 9 is rotationally driven, and the planting arm 10 alternately takes out the seedlings from the lower part of the seedling platform 12 and puts them on the rice field. Plant. At the same time, the reciprocating motion of the linkage rod 39 due to the rotational motion of the output shaft 77 is converted into rotational motion by the one-way clutch 33, and the drive shaft 37 is rotationally driven intermittently. The feeding roll 31a of the feeding unit 31 is intermittently rotated via the first to fourth fertilization clutches 38a to 38d, and the fertilizer of the hopper 32 is fed from the feeding unit 31 by a predetermined amount. High-pressure wind from the blower 40 is supplied to the hose 36 through the pipe 41, and fertilizer is supplied to the grooving device 35 through the hose 36 by the high-pressure air, and is formed on the rice field by the grooving device 35. Fertilizer is fed into the ditch.

  For example, as shown in FIGS. 5 and 13, when the first fertilization clutch 38 a is operated to the disconnected state, the feeding portion 31 corresponding to the two rotating cases 9 of the rightmost transmission case 8 stops, and the rightmost Fertilizer is not supplied to the two groovers 35 corresponding to the two rotating cases 9 of the transmission case 8. In this way, each of the first to fourth fertilization clutches 38a to 38d corresponds to two adjacent planting strips.

  As shown in FIGS. 5, 12, and 13, the operation shaft 63 is rotatably supported by the opening of the bracket 30 a of the support frame 30 over the feeding portion 31 in parallel with the drive shaft 37. The first, second, third, and fourth cam members 64a, 64b, 64c, and 64d are shifted in phase by a predetermined angle at a portion facing the first to fourth fertilization clutches 38a to 38d (near the bracket 30a of the support frame 30). It is fixed. An electric motor 65 that rotationally drives the operation shaft 63 is provided at one end of the operation shaft 63, and a potentiometer 66 that detects the phase of the operation shaft 63 is provided at the other end of the operation shaft 63.

  With the above structure, as described in [6] described later, the operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven by the electric motor 65, whereby the first to fourth cam members 64a to 64d are used. The first to fourth fertilization clutches 38a to 38d are operated to the activated and stopped states. When the first to fourth cam members 64a to 64d operate the first to fourth fertilizer clutches 38a to 38d in a stopped state, the first to fourth cam members 64a to 64d and the operation shaft 63 are connected to the first to fourth fertilizer clutches 38a to 38d. Even if a reaction force to be separated from the first to fourth cam members 64 a to 64 d is generated, the reaction force is supported by the bracket 30 a of the support frame 30.

[5]
Next, the operation structure of the first to fourth planting arm clutches 19a to 19d and the first to fourth vertical feed clutches 24a to 24d will be described.
As shown in FIGS. 3, 4, 6, and 7, right and left brackets 42 are fixed to the front side portion of the seedling base 12. An electric motor 43 (corresponding to a drive mechanism) and a gear case 44 are fixed to the right bracket 42, and a drive shaft 45 is rotatably supported. A transmission gear 45a fixed to the drive shaft 45, a pinion gear 44a of the gear case 44, Is biting. A boss portion 46 is fixed to the left bracket 42, a support shaft 47 is rotatably supported by the boss portion 46, and an operation shaft 48 is fixed across the drive shaft 45 and the support shaft 47. Thus, the operation shaft 48 is rotationally driven via the drive shaft 45. A potentiometer 49 is fixed to the boss portion 46, and the support shaft 47 and the potentiometer 49 are connected. When the operation shaft 48 is driven to rotate as described above, the support shaft 47 also rotates together. The tension meter 49 detects the phase of the operation shaft 48.

  As shown in FIGS. 8 (A), (B) and FIG. 9, the operation shaft 48 is made of an aluminum extruded material, and the outer surface is formed in a spline shape. Four first, second, third, and fourth cam members 51, 52, 53, and 54 are prepared, and the first to fourth cam members 51 to 54 are integrally formed of synthetic resin, and all have the same shape. Has been. The first to fourth cam members 51 to 54 include a small-radius arc-shaped portion (arc-surface shape), a pair of triangular corner portions, a large-radius arc-shape (arc-surface shape) portion, and a horizontally long boss portion. 51e, 52e, 53e, and 54e are provided, and the inner surfaces of the boss portions 51e to 54e of the first to fourth cam members 51 to 54 are formed in the same spline shape as the outer surface of the operation shaft 48 (first to fourth cam members 51 to 54e). The opening shapes of the boss portions 51e to 54e of the four cam members 51 to 54 are the same as the cross section of the operation shaft 48).

  Accordingly, as shown in FIGS. 8 (A), (B), 9, and 10, the operation shaft 48 is inserted into the boss portions 51e to 54e of the first to fourth cam members 51 to 54 at a predetermined phase, thereby the first. The four cam members 51 to 54 can be attached to the operation shaft 48 in a non-rotatable state with a predetermined phase. By inserting the operation shaft 48 into the boss portions 51e to 54e of the first to fourth cam members 51 to 54 in another predetermined phase, the first to fourth cam members 51 to 54 are rotated to the operation shaft 48 in another predetermined phase. The first to fourth cam members 51 to 54 can be attached to the operation shaft 48 at a desired predetermined phase. By inserting the operation shaft 48 into the boss portions 51e to 54e of the desired number of first to fourth cam members 51 to 54, the number of the first to fourth cam members 51 to 54 attached to the operation shaft 48 is arbitrarily set. can do.

  3, 6, and 7, the first and second cam members 51 and 52 are attached to the portion of the operation shaft 48 inside the right bracket 42, and the portion of the operation shaft 48 inside the left bracket 42 is attached. The third and fourth cam members 53 and 54 are attached, and the first to fourth cam members 51 to 54 are attached to the operation shaft 48 by shifting the phase by a predetermined angle (see FIG. 10).

  As a result, as shown in FIGS. 8 (A), (B), 9, and 10, in the second and third cam members 52 and 53, the arcuate portion (arc surface shape) with a small radius is replaced by the full-strand operating portion 52a, 53a, a pair of triangular corner portions are the right and left stop portions 52b, 53b, 52c, and 53c, and a large-radius arcuate portion (arc surface shape) is the stop holding portions 52d and 53d. In the first cam member 51, a small-radius arc-shaped (arc-surfaced) portion is a full-section actuating portion 51a, and one triangular corner is a right stop portion 51b, and a large-radius arc-shaped (arc-surfaced) ) Is the stop holding portion 51d, and the other triangular corner portion does not function. In the fourth cam member 54, the arc-shaped (arc-shaped) portion having a small radius is the full-line operating portion 54a, one triangular corner portion is the full-line stop portion 54b, and the other triangular corner portion is The left stop portion 54c is a large radius arc-shaped (arc surface) portion, which is a stop holding portion 54d.

  As shown in FIGS. 3, 6 and 7, the support shaft 55 is fixed to the right and left brackets 42, and the arm-shaped first and second operation portions 56 a around the support shaft 55 inside the right bracket 42. , 56b is supported toward the seedling table 12 so as to be swingable up and down, and the arm-like third and fourth operation portions 56c, 56d swing up and down around the support shaft 55 inside the left bracket 42. It is supported toward the seedling table 12 freely. A roller 57 is supported by the first to fourth operation portions 56a to 56d, and each of the rollers 57 of the first to fourth operation portions 56a to 56d rides on the first to fourth cam members 51 to 54 from above.

  As shown in FIGS. 3, 4, 6, and 7, right and left brackets 58 are fixed to lower portions of the right and left brackets 42 in the support frame 29, and each of the right and left brackets 58 is fixed. Two outer wires 59a of the wire 59 are fixed to each other (four wires in total), and an inner wire 59b of the wire 59 is connected to each of the first to fourth operation portions 56a to 56d. Two wires 61 are extended from the branch part 60 below the wire 59 (a total of eight wires 61), and the inner 61b (see FIG. 17) of the wire 61 is the first to fourth planting arm clutches 19a to 19d. , And the first to fourth vertical feed clutches 24a to 24d.

  As shown in FIG. 17, the branch portion 60 is configured in a box shape, and the outer portions 59 a and 61 a of the wires 59 and 61 are fixed to the outer wall portion of the branch portion 60, and the connecting member disposed inside the branch portion 60. 62 is connected to the inner 59b, 61b of the wire 59, 61. The connecting member 62 is movable inside the branch portion 60, and the pulling operation of the inner 59 b of the wire 59 is transmitted to the inner 61 b of the wire 61 via the connecting member 62. A notch 62 a is formed in the connecting member 62, and the inner ends of the wires 59, 61 are inserted into the notches 62 a of the connecting member 62 by inserting the tips of the inner 59 b, 61 b of the wires 59, 61. 59b and 61b are connected. A lid 60 a that can be freely opened and closed is provided on the wire 59 side portion of the branch portion 60, and the distal end portion of the inner 59 b of the wire 59 is removed from the connecting member 62 by opening the lid portion 60 a of the branch portion 60. The wire 59 can be easily removed. In this case, you may comprise so that the cover part (not shown) which can be opened and closed freely is provided in the whole surface of the branch part 60. FIG.

  With the above structure, as described in [6] described later, the operation shaft 48 and the first to fourth cam members 51 to 54 are rotated by the electric motor 43, so that the first to fourth cam members 51 to 54 are driven. The first to fourth operation parts 56a to 56d are operated to swing, and the first to fourth minority clutches 19a to 19d and the first to fourth longitudinal feeds via the first to fourth operation parts 56a to 56d and the wires 59 and 61. The clutches 24a to 24d are operated in the activated and stopped states.

[6]
Next, operations of the first to fourth planting arm clutches 19a to 19d, the first to fourth vertical feed clutches 24a to 24d, and the first to fourth fertilization clutches 38a to 38d will be described.
As shown in FIGS. 1 and 11, first, second, third, and fourth stop switches 68a, 68b, 68c, and 68d (corresponding to clutch operating tools) are provided below the steering handle 67 that steers the front wheel 1. It is arranged on the left in order from the right. The first to fourth stop switches 68a to 68d are constructed as push-on / push-off type push buttons, and the first to fourth stop switches 68a to 68d are equipped with lamps (not shown). The operation positions of the four stop switches 68a to 68d are input to the control device 69. As will be described later, the control device 69 operates the electric motors 43 and 65 based on the operation of the first to fourth stop switches 68a to 68d, and the detection signals of the potentiometers 49 and 66 are input to the control device 69. Yes.

The state shown in FIG. 10 is a state in which the first to fourth stop switches 68a to 68d are not pushed and operated, and the first to fourth stop switches 68a to 68d are operated to the operating positions. In this state, the lamps 68a to 68d are turned off (all-line operating state).
In the full-line operation state, the operation shaft 48 and the first to fourth cam members 51 to 54 are located at the rotation phase shown in FIG. 10, and the first to fourth operation parts 56a to 56d are located at the positions shown in FIG. The first to fourth planting arm clutches 19a to 19d and the first to fourth vertical feed clutches 24a to 24d are operated in the activated state. The operation shaft 63 and the first to fourth cam members 64a to 64d are positioned in the phase shown in FIG. 16 (a), and the first to fourth fertilization clutches 38a to 38d are operated to the operating state.

When the first stop switch 68a is pushed to the stop position in the full-line operation state shown in FIG. 10, the lamp of the first stop switch 68a is turned on.
As a result, as shown in FIG. 14 (a), the operation shaft 48 and the first to fourth cam members 51 to 54 are rotationally driven by a predetermined angle in the counterclockwise direction on the paper surface as shown in FIG. The roller 57 rides on the stop holding portion 51d from the right stop portion 51b of the first cam member 51, the first operation portion 56a is swung upward, the wires 59 and 61 are pulled, and the first planting arm The clutch 19a and the first longitudinal feed clutch 24a are operated in a stopped state. At the same time, as shown in FIG. 16B, the operating shaft 63 and the first to fourth cam members 64a to 64d are rotated by a predetermined angle in the counterclockwise direction on the paper surface by the electric motor 65, and the first cam member 64a. Is in contact with the first fertilizer clutch 38a, and the first fertilizer clutch 38a is slid to the left in FIG. 13 to be stopped.

As described above, when the first stop switch 68a is pushed to the stop position and the second stop switch 68b is pushed to the stop position, the lamp of the second stop switch 68b is turned on.
As a result, as shown in FIG. 14B, the operation shaft 48 and the first to fourth cam members 51 to 54 are further rotated by a predetermined angle in the counterclockwise direction on the paper surface by the electric motor 43, and the second operation portion 56b. The roller 57 rides on the stop holding portion 52d from the right stop portion 52b of the second cam member 52, the second operation portion 56b is swung upward by the second cam member 52, and the wires 59 and 61 are pulled. Thus, the second planting arm clutch 19b and the second longitudinal feed clutch 24b are operated in a stopped state. At the same time, as shown in FIG. 16C, the operation shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the counterclockwise direction on the paper surface as shown in FIG. 64b contacts the second fertilizer clutch 38b, and the second fertilizer clutch 38b is slid to the left in FIG. 13 to be stopped.

  In this case, as described above, even if the operation shaft 48 and the first to fourth cam members 51 to 54, the operation shaft 63, and the first to fourth cam members 64a to 64d are rotationally driven, the roller 57 of the first operation portion 56a. Is maintained on the stop holding portion 51d of the first cam member 51, and the first planting arm clutch 19a and the first longitudinal feed clutch 24a are maintained in the stopped state. The first fertilization clutch 38a is maintained in the stopped state by being slid to the left in FIG. 13 by 64a.

As described above, when the first and second stop switches 68a and 68b are pushed to the stop position and the third stop switch 68c is pushed to the stop position, the lamp of the third stop switch 68c is turned on. Lights up.
As a result, as shown in FIG. 14C, the operation shaft 48 and the first to fourth cam members 51 to 54 are further rotated by a predetermined angle in the counterclockwise direction on the paper surface by the electric motor 43, and the third operation portion 56c. The roller 57 rides on the stop holding portion 53d from the right stop portion 53b of the third cam member 53, the third operation portion 56c is swung upward by the third cam member 53, and the wires 59 and 61 are pulled. Thus, the third planting arm clutch 19c and the third longitudinal feed clutch 24c are operated in a stopped state. At the same time, as shown in FIG. 16 (d), the operating shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the counterclockwise direction on the paper surface as shown in FIG. 64c contacts the third fertilization clutch 38c, and the third fertilization clutch 38c is slid to the left in FIG. 13 to be stopped.

  In this case, even if the operation shaft 48 and the first to fourth cam members 51 to 54 and the operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven as described above, the first and second operation portions 56a and 56b are driven. The state in which the roller 57 has ridden on the stop holding portions 51d and 52d of the first and second cam members 51 and 52 is maintained, and the first and second planting arm clutches 19a and 19b and the first and second longitudinal feed clutches 24a are maintained. 24b is maintained in the stopped state, and the first and second fertilizing clutches 38a and 38b are maintained in the stopped state in which the first and second fertilizing clutches 38a and 38b are slid to the left in FIG. Yes.

As described above, when the first, second and third stop switches 68a, 68b and 68c are pushed to the stop position and the fourth stop switch 68d is pushed to the stop position, the fourth stop The lamp of the switch 68d is turned on.
As a result, as shown in FIG. 14 (d), the operation shaft 48 and the first to fourth cam members 51 to 54 are further rotated by a predetermined angle counterclockwise on the paper surface by the electric motor 43, and the fourth operation portion 56d. The roller 57 rides on the stop holding portion 54d from the full stop portion 54b of the fourth cam member 54, the fourth operation portion 56d is swung upward by the fourth cam member 54, and the wires 59 and 61 are pulled. Thus, the fourth planting arm clutch 19d and the fourth longitudinal feed clutch 24d are operated in a stopped state. At the same time, as shown in FIG. 16E, the operating shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the counterclockwise direction on the paper surface by the electric motor 65, and the fourth cam member 64d. Is in contact with the fourth fertilization clutch 38d, and the fourth fertilization clutch 38d is slid to the left in FIG. 13 to be stopped.

In this case, even if the operation shaft 48 and the first to fourth cam members 51 to 54, the operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven as described above, the first, second and third operation portions 56a are driven. , 56b, 56c are maintained in a state in which the rollers 57 of the first, second, third cam members 51, 52, 53 ride on the stop holding portions 51d, 52d, 53d, and the first, second, third planting arm clutches are maintained. 19a, 19b, 19c and the first, second and third longitudinal feed clutches 24a, 24b, 24c are maintained in a stopped state, and the first, second, third cam members 64a, 64b, 64c The three fertilizer clutches 38a, 38b, and 38c are maintained in a stopped state that is slid to the left in FIG.
As a result, the first to fourth planting arm clutches 19a to 19d, the first to fourth longitudinal feed clutches 24a to 24d, and the first to fourth fertilization clutches 38a to 38d are brought into a full-line stopped state.

[7]
As described in [6] above, when the first to fourth stop switches 68a to 68d are pushed and operated to the stop position (all-line stop state), the fourth stop switch 68d is pushed and operated. Is operated, the lamp of the fourth stop switch 68d is turned off.
As a result, as shown in FIGS. 14 (d) to 14 (c), the operation shaft 48 and the first to fourth cam members 51 to 54 are rotationally driven clockwise by a predetermined angle by the electric motor 43, and the first The roller 57 of the fourth operation part 56d returns from the full-line stop part 54b of the fourth cam member 54 to the full-line operation part 54a, and the fourth operation part 56d is swung downward by the fourth cam member 54. 61 is returned, and the fourth planting arm clutch 19d and the fourth longitudinal feed clutch 24d are operated. At the same time, as shown in FIGS. 16 (e) to 16 (d), the operation shaft 63 and the first to fourth cam members 64a to 64d are rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 65, and the first The four cam members 64d are separated from the fourth fertilization clutch 38d, and the fourth fertilization clutch 38d is slid to the right in the drawing of FIG.

  In this case, even if the operation shaft 48 and the first to fourth cam members 51 to 54, the operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven as described above, the first, second and third operation portions 56a are driven. , 56b, 56c are maintained in a state in which the rollers 57 of the first, second, third cam members 51, 52, 53 ride on the stop holding portions 51d, 52d, 53d, and the first, second, third planting arm clutches are maintained. 19a, 19b, 19c and the first, second and third longitudinal feed clutches 24a, 24b, 24c are maintained in a stopped state, and the first, second, third cam members 64a, 64b, 64c The three fertilization clutches 38a, 38b, and 38c are maintained in a stopped state that is slid to the left in FIG.

As described above, when the first, second, and third stop switches 68a, 68b, and 68c are pushed to the stop position and the third stop switch 68c is pushed to the operating position, the third stop The lamp of the switch 68c is turned on.
Accordingly, as shown in FIGS. 14C to 14B, the operation shaft 48 and the first to fourth cam members 51 to 54 are further rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 43, The roller 57 of the third operating portion 56c returns from the right stop portion 53b of the third cam member 53 to the full-line operating portion 53a, and the third operating portion 56c is swung downward by the third cam member 53, and the wires 59, 61 is returned, and the third planting arm clutch 19c and the third longitudinal feed clutch 24c are operated. At the same time, as shown in FIGS. 16D to 16C, the operation shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 65, The third cam member 64c is separated from the third fertilization clutch 38c, and the third fertilization clutch 38c is slid to the right in the drawing of FIG.

  In this case, even if the operation shaft 48 and the first to fourth cam members 51 to 54 and the operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven as described above, the first and second operation portions 56a and 56b are driven. The state in which the roller 57 has ridden on the stop holding portions 51d and 52d of the first and second cam members 51 and 52 is maintained, and the first and second planting arm clutches 19a and 19b and the first and second longitudinal feed clutches 24a are maintained. 24b is maintained in the stopped state, and the first and second fertilizing clutches 38a and 38b are maintained in the stopped state in which the first and second fertilizing clutches 38a and 38b are slid to the left in FIG. Yes.

As described above, when the first and second stop switches 68a and 68b are pushed to the stop position and the second stop switch 68b is pushed to the operating position, the lamp of the second stop switch 68b is turned on. Lights up.
As a result, as shown in FIGS. 14 (b) to 14 (a), the operation shaft 48 and the first to fourth cam members 51 to 54 are further rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 43, The roller 57 of the second operation portion 56b returns from the right stop portion 52b of the second cam member 52 to the full stop portion 52a, and the second operation portion 56b is swung downward by the second cam member 52, and the wires 59, 61 is returned, and the second planting arm clutch 19b and the second longitudinal feed clutch 24b are operated. At the same time, as shown in FIG. 16 (c) to FIG. 16 (b), the operation shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the clockwise direction on the paper by the electric motor 65, The second cam member 64b is separated from the second fertilization clutch 38b, and the second fertilization clutch 38b is slid to the right in FIG. 13 to operate.

  In this case, as described above, even if the operation shaft 48 and the first to fourth cam members 51 to 54, the operation shaft 63, and the first to fourth cam members 64a to 64d are rotationally driven, the roller 57 of the first operation portion 56a. Is maintained on the stop holding portion 51d of the first cam member 51, and the first planting arm clutch 19a and the first longitudinal feed clutch 24a are maintained in the stopped state. The first fertilization clutch 38a is maintained in the stopped state by being slid to the left in FIG. 13 by 64a.

As described above, when the first stop switch 68a is pushed to the stop position and the first stop switch 68a is pushed to the operating position, the lamp of the first stop switch 68a is turned on.
Accordingly, as shown in FIGS. 14A to 10, the operation shaft 48 and the first to fourth cam members 51 to 54 are further rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 43, so that the first operation is performed. The roller 57 of the part 56a returns from the right stop part 51b of the first cam member 51 to the full-line operating part 51a, the first operating part 56a is swung downward by the first cam member 51, and the wires 59 and 61 are returned. By being operated, the first planting arm clutch 19a and the first longitudinal feed clutch 24a are operated. At the same time, as shown in FIG. 16 (b) to FIG. 16 (b), the operation shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 65, The first cam member 64a is separated from the first fertilizer clutch 38a, and the first fertilizer clutch 38a is slid to the right side of the sheet of FIG. 13 to operate. As a result, the full-line operating state is restored.

[8]
As shown in FIG. 10, the first to fourth stop switches 68 a to 68 d in a state where the first to fourth stop switches 68 a to 68 d are not pushed (the lamps of the first to fourth stop switches 68 a to 68 d are turned off). If the fourth stop switch 68d is pushed and operated to the stop position in a state where the 68d is operated to the operation position (all-line operation state), the lamp of the fourth stop switch 68d is turned on.

  As a result, as shown in FIGS. 10 to 15 (a), the operation shaft 48 and the first to fourth cam members 51 to 54 are rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 43, and the fourth operation portion. The 56d roller 57 rides on the stop holding portion 54d from the left stop portion 54c of the fourth cam member 54, the fourth operating portion 56d is swung upward, the wires 59 and 61 are pulled, and the fourth plantation is performed. The attached arm clutch 19d and the fourth longitudinal feed clutch 24d are operated in a stopped state. At the same time, from the state shown in FIG. 16 (a), the operating shaft 63 and the first to fourth cam members 64a to 64d are rotated by a predetermined angle in the clockwise direction on the paper surface by the electric motor 65, and the fourth cam member 64d is moved. The fourth fertilization clutch 38d is contacted, and the fourth fertilization clutch 38d is slid to the left in FIG. 13 to be stopped.

As described above, the first to fourth stop switches 68a to 68d are operated in a state where the first to fourth stop switches 68a to 68d are not pushed (the lamps of the first to fourth stop switches 68a to 68d are turned off). In the state operated to the position (all-strip operation state), the fourth, third, and second stop switches 68d, 68c, and 68b are pushed in order and operated to the stop position, thereby reversing the previous item [6]. By the left stop portions 54c, 53c, 52c of the fourth, third, and second cam members 54, 53, 52 in this order,
The fourth planting arm clutch 19d, the fourth vertical feed clutch 24d, and the fourth fertilizing clutch 38d are stopped (the third, second and first planting arm clutches 19c, 19b, 19a and the third, second, one vertical feed clutch 24c). , 24b, 24a, operating states of the third, second, and first fertilization clutches 38c, 38b, 38a) (see FIG. 15 (A)),
The fourth and third planting arm clutches 19d and 19c, the fourth and third vertical feed clutches 24d and 24c, and the fourth and third fertilization clutches 38d and 38c are stopped (the second and first planting arm clutches 19b and 19a and the second , 1 longitudinal feed clutch 24b, 24a, operating state of the second and first fertilization clutches 38b, 38a) (see FIG. 15 (B)),
The fourth and third and second planting arm clutches 19d, 19c and 19b, the fourth and third and second longitudinal feed clutches 24d, 24c and 24b, and the fourth and third and second fertilization clutches 38d, 38c and 38b are stopped (first The operation state of the planting arm clutch 19a, the first longitudinal feed clutch 24a, and the first fertilization clutch 38a) (see FIG. 15C) is obtained.

  After the fourth, third, and second stop switches 68d, 68c, and 68b are sequentially pushed to the stop position (the state shown in FIG. 15C), the first stop switch 68a is pushed to the stop position. Then, the operating shaft 63 and the first to fourth cam members 64a to 64d are greatly rotated in the counterclockwise direction from the state shown in FIG. 15C by the electric motor 65, as shown in FIG. (A), FIG. 10 and FIG. 14 (A), (B), (C) are passed, and the state shown in FIG. At the same time, the operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven by the electric motor 65 to reach the state shown in FIG. 16 (e), and the first cam member 64a is moved to the first fertilizing clutch 38a. The first fertilizer clutch 38a is slid to the left in FIG. 13 and is stopped.

  As a result, as described in [6], the first to fourth planting arm clutches 19a to 19d are formed by the right stop portions 51b, 52b, and 53b and the full strip stop portion 54b of the first to fourth cam members 51 to 54. And the 1st-4th vertical feed clutch 24a-24d and the 1st-4th fertilization clutch 38a-38d will be in the full strip stop state operated to the stop state.

[9]
As described in [8] above, in the state where the first to fourth stop switches 68a to 68d are pushed and operated to the stop position (all-line stop state) (see FIG. 14D), the first stop switch When the 68a is pushed to the operating position, the lamp of the first stop switch 68a is turned off.

  Accordingly, from the state shown in FIG. 14 (d), the operating shaft 48 and the first to fourth cam members 51 to 54 are greatly rotated in the clockwise direction on the paper by the electric motor 43, contrary to the above, and FIG. (B) (A), FIG. 10 and FIG. 15 (B) pass through (B) and reach the state shown in FIG. 15 (C), and the first minority clutch 19a and the first longitudinal feed clutch 24a are in the operating state. At the same time, from the state shown in FIG. 16E, the operating shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven by a predetermined angle in the counterclockwise direction on the paper surface. The cam member 64a is separated from the first fertilizer clutch 38a, and the first fertilizer clutch 38a is slid to the right in FIG. 13 to be activated (fourth, third and second planting arm clutches 19d, 19c, 19b and 4,3 2 Vertical feed clutches 24d, 24c, 24b, fourth, third and second fertilization clutches 38d, 38c, 38b are stopped (the first planting arm clutch 19a, the first vertical feed clutch 24a, and the first fertilization clutch 38a are operating) )).

Next, the second, third, and fourth stop switches 68b, 68c, and 68d are pushed in order and operated to the operating position, whereby the second, third, and fourth cam members 52, By the left stop portions 52c, 53c, 54c of 53, 54,
The fourth and third planting arm clutches 19d and 19c, the fourth and third vertical feed clutches 24d and 24c, and the fourth and third fertilization clutches 38d and 38c are stopped (the second and first planting arm clutches 19b and 19a and the second , 1 longitudinal feed clutch 24b, 24a, operating state of the second and first fertilization clutches 38b, 38a) (see FIG. 15 (B)),
The fourth planting arm clutch 19d, the fourth vertical feed clutch 24d, and the fourth fertilizing clutch 38d are stopped (the third, second and first planting arm clutches 19c, 19b, 19a and the third, second, one vertical feed clutch 24c). , 24b, 24a, operating states of the third, second, and first fertilization clutches 38c, 38b, 38a) (see FIG. 15 (A)),
In addition, the full-line operating state is obtained (see FIG. 10).

[9]
In general, in the case of a riding type rice transplanter, when one planting process is completed and the aircraft reaches the shoreline, the seedling planting device 7 is driven to rise greatly from the surface, and the front wheel 1 is steered by the steering handle 67. Then, the aircraft is turned at the heel, and when the turning at the heel is finished, the seedling planting device 7 is driven down to the rice field and the next planting process is started.

  In this case, any one of the first to fourth stop switches 68a to 68d is pushed and operated to the stop position (the lamps of the first to fourth stop switches 68a to 68d operated to the stop position are turned on, and the stop position is The first to fourth planting arm clutches 19a to 19d, the first to fourth longitudinal feed clutches 24a to 24d, and the first to fourth fertilization clutches 38a to 38d corresponding to the first to fourth stop switches 68a to 68d operated ), Once the planting process is completed, the aircraft reaches the heel, and the seedling planting device 7 is driven to rise greatly from the rice field (accordingly, planting that transmits the power of the engine 3 to the PTO shaft 18). 11), the buzzer 70 shown in FIG. 11 is activated, the warning lamp 71 provided on the instrument panel 72 blinks, and is pushed to operate to the stop position. The 1-4 stop switches 68a to 68d are returned to the operating position, the lamp is turned off, and the operating shaft 48 and the first to fourth cam members 51 to 54 are rotationally driven to the phase shown in FIG. The operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven by the motor 65 in the phase shown in FIG.

  After this, the turning at the heel end is completed, and when the seedling planting device 7 is driven down to the surface and the planting clutch is operated in the transmission state to enter the next planting process, the desired first to fourth stops The desired first to fourth planting arm clutches 19a to 19d, the first to fourth longitudinal feed clutches 24a to 24d, and the first to fourth fertilization clutches 38a to 38d are pushed by operating the switches 68a to 68d to the stop position. What is necessary is just to operate 38d to a stop state.

  As shown in FIG. 11, a fertilization stop switch 73 configured as a push-button type push-on / push-off is provided on the rear side of the driver seat 5 (front side of the hopper 32). Accordingly, when the fertilization stop switch 73 is pushed and operated to the entry position, the operation shaft 63 and the first to fourth cam members 64a to 64d are shown by the electric motor 65 regardless of the first to fourth stop switches 68a to 68d. The first to fourth fertilization clutches 38a to 38d are driven to stop in the phase indicated by 16 (e) (the first to fourth planting arm clutches 19a to 19d and the first to fourth longitudinal feeds). The clutches 24a to 24d follow the first to fourth stop switches 68a to 68d). When the fertilization stop switch 73 is pushed and operated to the cutting position, the first to fourth fertilization clutches 38a to 38d return to the state according to the first to fourth stop switches 68a to 68d.

  As shown in FIG. 11, a fertilizer sensor (not shown) that detects that the fertilizer in the hopper 32 has become less than a predetermined amount is provided, and a fertilizer remaining amount lamp 74 that blinks based on the detection of the fertilizer sensor. Is provided on the instrument panel 72. A fertilizer clogging sensor (not shown) that detects that a fertilizer clogging has occurred in any of the eight grooving devices 35 is provided, and blinks based on the detection of the fertilizer clogging sensor. A fertilizer clogging lamp 75 is provided on the instrument panel 72. In this case, as described above, when the fertilizer stop switch 73 is pushed and operated to the on position, the fertilizer remaining amount lamp 74 and the fertilizer clogging lamp 75 are continuously lit.

[First Alternative Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention], the configuration shown in FIG. 19 may be added.
As shown in FIG. 19, a support rail 81 is disposed over the entire width of the seedling platform 12 on the upper rear side of the seedling platform 12, and a medicine spraying device 82 that can reciprocate along the support rail 81 is provided. ing. The medicine spraying device 82 includes a hopper 82a for storing medicine, a feeding portion 82b for feeding the medicine in the hopper 82a by a predetermined amount, a hose 82c for spraying the medicine from the feeding portion 82b, and the like. Is reciprocated along the support rail 81, the medicine is sprayed on the seedlings placed on the seedling platform 12.

  As shown in FIG. 19, in the seedling setting table 12, ranges A1, A2, A3, and A4 of the seedling setting surfaces of the two planting strips corresponding to the first to fourth planting arm clutches 19 a to 19 d are set. In a state in which the first to fourth stop switches 68a to 68d are operated to the operating position in a state where the first to fourth stop switches 68a to 68d are not operated (all strips operating state), the medicine spraying device 82 is all seedlings. It reciprocates over the range A1 to A4 of the mounting surface.

  As shown in FIG. 19, when any one of the first to fourth stop switches 68a to 68d is pushed to the stop position, the seedlings corresponding to the first to fourth stop switches 68a to 68d operated to the stop position are placed. The medicine spraying device 82 reciprocates over the range A1 to A4 of the seedling setting surface other than the surface (for example, when the first stop switch 68a is pushed and operated to the stop position, the drug spraying device 82 is set to the seedling setting surface. In the range A2, A3, A4).

[Second Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention] [First Alternative Embodiment of the Invention], the first to fourth cam members 51 to 54 shown in FIG. You may comprise so that the function of the 1st-4th cam members 51-54 may be provided in (not shown).
In the first cam member 51 shown in FIG. 10, the arc-shaped (arc-shaped) portion having a small radius is an all-strip operating portion 51a, and one triangular corner is the all-strip stop portion (the portion 51b in FIG. 10). The other triangular corner portion may be a left stop portion, and a large radius arc shape (arc surface shape) portion may be a stop holding portion 51d. In this case, in the fourth cam member 51, the arc-shaped portion (arc surface shape) with a small radius is the full-line operating portion 54a, and one corner portion of the triangular shape is the left stop portion 54c. The planar portion is the stop holding portion 54d, and the other triangular corner portion (the portion 54b in FIG. 10) does not function.

[Third Another Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention] [First Alternative Embodiment] [Second Alternative Embodiment], the first to fourth stop switches 68 to 68d shown in FIG. The first to fourth planting arm clutches 19a to 19d, the first to fourth longitudinal feed clutches 24a to 24d, and the first to fourth fertilization clutches by one stop lever (not shown) (corresponding to a clutch operating tool) You may comprise so that 38a-38d can be operated in an operation | movement and a stop state. In this case, a stop lever may be provided in the vicinity of the steering handle 67 or may be provided on the right side (or left side) of the driver seat 5.

[Fourth Embodiment of the Invention]
The present invention can be applied not only to the eight-row type seedling planting device 7 but also to the ten-row type, six-row type, and five-row type seedling planting device 7. 31, it is applicable also to the riding type rice transplanter which is not equipped with the grooving device 35, the hose 36, and the 1st-4th fertilization clutch 38a-38d.
The present invention can be applied not only to a riding type rice transplanter but also to a paddy field working machine such as a riding type direct seeding machine or a riding type drug spreader.

Overall side view of riding rice transplanter Overall plan view of riding rice transplanter Overall plan view of seedling planting device Front view of seedling planting device Rear view of the vicinity of the hopper, feeding part, electric motor, operation shaft, first to fourth cam members and first to fourth fertilization clutches Longitudinal front view of the vicinity of the electric motor, the operation shaft, the first to fourth cam members, and the first to fourth operation portions in the seedling table Vertical side view of the vicinity of the electric motor, the operating shaft, the first cam member, and the first operating portion in the seedling table Sectional drawing of the operation shaft and the first to fourth cam members in the seedling table Perspective view of operation shaft and first to fourth cam members in seedling table In the full-line operation state, the electric motor, the operation shaft, the first to fourth cam members and the first to fourth operation portions, the first to fourth planting arm clutches, and the first to vertical feed clutches in the seedling table are linked. Illustration The figure which shows the cooperation state of a 1st-4th stop switch and an electric motor The perspective view of the operating shaft and the 1st-4th cam member in an extension part The top view which shows the connection state of the operating shaft in a paying-out part, the 1st-4th cam member, and the 1st-4th fertilization clutch. The figure which shows the operating state of the operating shaft in a seedling stand, the 1st-4th cam member, and the 1st-4th operation part. The figure which shows the operating state of the operating shaft in a seedling stand, the 1st-4th cam member, and the 1st-4th operation part. The figure which shows the operating state of the operating shaft in a delivery part, and the 1st-4th cam member. Perspective view of wire and branch Longitudinal front view (a) and longitudinal side view (b) near the support frame, base frame, and support column of the feeding section In 1st another form of implementation of invention, the rear view of the seedling stand and the vicinity of a chemical spraying device

Explanation of symbols

9, 10 Working part 19a, 19b, 19c, 19d Minority clutch 24a, 24b, 24c, 24d Minority clutch 43 Drive mechanism 51, 52, 53, 54 Cam member 51a, 52a, 53a, 54a All-strand operating part 51b, 52b, 53b Right stop part 52c, 53c, 54c Left stop part 54b All-line stop part 68a, 68b, 68c, 68d Clutch operating tool G

Claims (1)

A work section for performing work on the surface is provided according to the work strip, and a plurality of minority clutches that can be operated and stopped freely for the small number of work portions,
A cam member, a drive mechanism that rotationally drives the cam member, and a clutch operation tool that is artificially operated;
Based on the operation of the clutch operation tool, the cam mechanism rotates the cam member in the first direction and the second direction opposite to the first direction, and the cam member operates the minority clutch in the activated and stopped states. And configured to be
The all-strip actuating part in which all the minority clutches are operated and the cam member is rotated in the first direction, so that the minority clutch on the left side is operated in a stopped state sequentially from the minority clutch on the right end. A plurality of right stop portions, and a plurality of left stop portions in which the right-side minority clutch is operated in a stopped state sequentially from the left-end minority clutch by rotating the cam member in the second direction, The cam member is provided with an all-strip stop portion in which all the minority clutches are operated in a stopped state,
In the cam member, a plurality of right stop portions are sequentially arranged on one side from the full-line operation portion, and a plurality of left stop portions are sequentially arranged on the other side from the full-line operation portion. A paddy field work machine in which a full-line stop part is arranged next to the part farthest from the full-line operation part.

Images