JP4568688B2 - Ride type rice transplanter - Google Patents

Description

  The present invention relates to an operation structure of a small number of clutches in a riding type rice transplanter.

  In the riding type rice transplanter, as disclosed in, for example, Patent Document 1, a small number of clutches (19a to 19e and 24a to 24e in FIG. 2 of Patent Document 1) that can be operated and stopped by a small number of planting arms. (For example, in a 10-row type seedling planting device, a small number of clutches that can be operated and stopped by a planting arm of two adjacent planting strips can be configured, Some have five such minority clutches).

In Patent Document 1, an artificial operation tool (49 in FIGS. 2, 5, and 6 in Patent Document 1) is provided, and the artificial operation tool and the small number of clutches are mechanically connected by a cam mechanism, a wire, or the like. It is linked. The entire operation position (63 in FIG. 6 of Patent Document 1) on the cover (60 of Patents 5, 5 and 6), the right operation path extending in the same direction from the entire operation position (Patent Document 1) 1 of FIG. 6 and the left operation path (66 of FIG. 6 of Patent Document 1).
As a result, when the artificial operating tool is operated to the full-strand operating position, all the minority clutches are operated to the operating state. When the artificial operating tool is operated from the full-strand operating position to the right operating path, it is sequentially operated from the right minority clutch to the stop state, and the artificial operating tool is operated from the full-strand operating position to the left operating path. As it continues, it is sequentially operated from the left minority clutch to the stop state.

Japanese Patent Laid-Open No. 2003-259708 (FIGS. 2, 4, 5, 6)

In Patent Document 1, since the artificial operation tool and the minority clutch are mechanically linked by a cam mechanism, a wire, or the like, the operation resistance of the cam mechanism, the wire, or the like, or the operation resistance of the minority clutch is applied to the artificial operation tool. In other words, the operation of the human operation tool may be heavy.
Therefore, in recent years, an electric mechanism that can operate the small number of clutches in an activated and stopped state and a detection device that electrically detects the operation position of the artificial operation tool are provided, and the electric mechanism is operated based on the detection signal of the detection device. It has been proposed to configure as follows.

In this case, for example, as shown in FIG. 14 , one human operation tool 101 and two detection devices 102 (for example, a potentiometer) are provided, and the right and left operation paths 103 having a U-shape in plan view with respect to the human operation tool 101, 104 may be set. Accordingly, when the human operation tool 101 is operated in the right operation path 103 (left operation path 104), the human operation tool 101 is engaged with the operation unit 102a of the right (left) detection device 102. Is operated along the right operation path 103 (left operation path 104), so that the right (left) minority number of clutches are sequentially operated from the right (left) minority clutch based on the detection signal of the right (left) detection device 102. Configure as follows.

For example, as shown in FIG. 15 , two artificial operation tools 101 and two detection devices 102 (for example, potentiometers) for detecting the operation position of the artificial operation tool 101 are provided. , 104 may be set. Accordingly, by operating the right (left) artificial operation tool 101 along the right operation path 103 (left operation path 104), the right (left) is detected based on the detection signal of the right (left) detection device 102. ) Is configured to be operated sequentially from a small number of clutches to a stopped state.
However, the configuration shown in FIGS. 14 and 15 requires two detection devices 102, so there is room for improvement.

For example, as shown in FIG. 16 , one human operation tool 101 and one detection device 102 (for example, a potentiometer) that detects the operation position of the human operation tool 101 are provided. , 104 may be set in the left-right direction opposite to each other. Thus, when the artificial operation tool 101 is operated on the right operation path 103 (left operation path 104), the right (left) minority number clutch is sequentially operated from the right (left) minority clutch based on the detection signal of the detection device 102. Configure.

For example, as shown in FIG. 17 , one human operation tool 101 and one detection device 102 (for example, a potentiometer) that detects the operation position of the human operation tool 101 are provided. , 104 can be set in a crank shape in the front-rear direction. Thus, when the artificial operation tool 101 is operated on the right operation path 103 (left operation path 104), the right (left) minority number clutch is sequentially operated from the right (left) minority clutch based on the detection signal of the detection device 102. Configure.
However, in the configuration shown in FIGS. 16 and 17 , the right and left operation paths 103 and 104 are extended in opposite directions, and the right and left operation paths 103 and 104 have a large lateral width (front-rear width). Therefore, it may be difficult to secure the arrangement space for the right and left operation paths 103 and 104.

  The present invention is configured to detect an operation position of an artificially operated manipulator operated manually by a detection device in a riding type rice transplanter and sequentially operate from a right (left) minority clutch to a stopped state by an electric mechanism. In this case, an object of the present invention is to simply configure the detection structure of the operation position of the human operation tool while reducing the arrangement space of the right and left operation paths with respect to the human operation tool.

[I]
(Constitution)
The first feature of the present invention resides in the following configuration in a riding type rice transplanter.
A planting arm for planting seedlings on the rice field is arranged in the planting planting device at predetermined intervals in the left-right direction according to the planting strip, and a small number of clutches that can be operated and stopped by a small number of planting arms. Provide multiple.
An electric mechanism capable of operating a small number of clutches in an activated and stopped state, a control means for operating the electric mechanism, and an artificial operation tool that is artificially operated.
All-strand operating position, right operation path extending forward from the end of the path extending to the right side from the all-strand operating position, and path extending to the left side from the all-strand operating position And the left operating path extending forward from the end of each of the first and second operating paths, and the right and left operating paths are configured in a U shape in plan view.
Detecting the operation position of the human operation tool in the full-line operation position, and detecting the operation position of the human operation tool in the right operation path when the human operation tool is operated from the full-line operation position to the right operation path, A single detection device is provided for detecting the operation position of the human operation tool in the left operation path when the human operation tool is operated from the full-line operation position to the left operation path.
A single detection device is constituted by a potentiometer having a rotary detection shaft.
Based on the detection signal of a single detection device, when the artificial operating tool is operated to the full-strand operating position, all the minority clutches are operated, and the artificial operating tool is operated from the full-strand operating position to the right operating path. As a result, the right minority clutch is operated in order to stop, and the manipulator is operated from the leftmost operation position to the left operation path so that the left minority clutch is operated in order to stop. The control means is configured.

(Function)
According to the first feature of the present invention, when the artificial operating tool is operated in the full-line operating position, the right and left operating paths, the detection signal output from the detection device (when the artificial operating tool is operated in the full-line operating position) The detection signal, the detection signal when the artificial operation tool is operated along the right operation path, and the detection signal when the artificial operation tool is operated along the left operation path) are all different.
Thereby, it is possible to determine the position of the full-line operating position and the right and left operation paths by the detection signal of the detection device, and it is possible to determine the artificial operation tool by a single detection device. It is possible to determine at which position of the full-line operation position, the right and left operation paths are operated.

  Therefore, according to the first feature of the present invention, when the artificial operating tool is operated to the full-strand operating position based on the detection signal of the detection device, all the minority clutches are operated to operate, and the artificial operating tool is fully operated. When operating from the position to the right operation path, the right minority clutch is sequentially operated from the right position to the stop state, and when operating the artificial operation tool from the full operation position to the left operation path, the left minority clutch is stopped. The control means can be actuated appropriately so as to be sequentially operated to the state.

In this case, according to the first feature of the present invention, the all- strand operation position, the right operation path extending forward from the end of the path extending to the right side from the all-strand operation position, and the all-strand operation A left operation path extending forward from an end portion of the path extending to the left side from the position, and the full-line operation position, the right and left operation paths are configured in a U shape in plan view. Since the right and left operation paths have a compact left-right width (front-rear width) , the right and left operation paths shown in FIGS. 16 and 17 are extended in the opposite directions. And it is not necessary to secure a large arrangement space for the left operation path.

(The invention's effect)
According to the first feature of the present invention, in the riding type rice transplanter, the operation position of the artificially operated operation tool is detected by the detection device, and sequentially from the right (left) minority clutch to the stop state by the electric mechanism. When configured to be operated, a single detection device can be used to determine which position on the full-line operating position, the right and left operating paths the human operating tool has been operated, The detection structure of the operation position of the tool can be simply configured, and the production cost can be reduced.
According to the first feature of the present invention, the full-line operating position, the right and left operation paths are configured in a U shape in plan view, and the right and left operation paths have a compact left and right width (front-rear width). As a result, the arrangement space for the right and left operation paths for the human operation tool is advantageous.

[II]
(Constitution)
The second feature of the present invention resides in the following configuration in the riding rice transplanter of the first feature of the present invention.
An arm is provided on the detection shaft , a long hole is formed in one of the artificial operation tool and the arm, and the other of the artificial operation tool and the arm is inserted into the long hole.
When the artificial operating tool is operated to the full-strand operating position, the detection shaft of the detection device is operated to a predetermined phase, and when the artificial operating tool is operated to the right operation path, the detection shaft of the detection device is moved from the predetermined phase to the first direction side. When the artificial operation tool is operated to the left operation path in the range, the detection axis of the detection device is rotated in the second direction side direction opposite to the first direction side from the predetermined phase. The operation tool and the arm are linked.

(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 onset Ming second feature, Zenjo operating position manual control device, right and when operating to the left for the operation path range detection axis predetermined phases from a predetermined phase of the first direction side of the detecting device and a predetermined phase Since the rotation operation is performed in the range of the second direction side opposite to the first direction side, the detection signal output from the detection device when the artificial operation tool is operated to the full-line operation position, the right and left operation paths. Can be made all different without difficulty.

(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.
When the second feature of the present invention, can be made to be those different from all reasonably detection signal outputted from the detection device, and be advantageous in terms of simplification of the reduction and the structure of the production costs became.

Hereinafter, reference embodiments for clarifying the present invention will be described with reference to FIGS. After that, the embodiment of the invention according to the present invention is described based on FIG. 10 and FIG. 11, the first another embodiment of the invention according to the present invention is described based on FIG. 12 and FIG. A second alternative embodiment of the invention according to the present invention will be described without using the drawings.
[Reference form]
[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. It is connected by a cylinder 14 so as to be movable up and down, and a seedling planting device 7 is supported by the link mechanism 6 to constitute a riding type rice transplanter.

  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 rotatably supported on the left side, a pair of planting arms 10 provided at both ends of the rotating case 9, a grounding float 11, a seedling stage 12, and a seedling placed on the seedling stage 12 A vertical feed mechanism 13 and the like for feeding to the lower part of the seedling bed 12 are provided.

  As shown in FIGS. 1 and 3, a feed case 15 is connected to the lower part of the rear part 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 connected to the feed case 15 via the PTO shaft 18. Has been communicated. A lateral support frame 16 is connected to the feed case 15, and four transmission cases 8 are connected to the support frame 16 in a cantilevered manner so as to transmit the feed case 15 and the four transmission cases 8. A shaft 17 is connected.

  As a result, as shown in FIG. 3, the power of the engine 3 is transmitted through the PTO shaft 18, the feed case 15, the transmission shaft 17, the transmission case 8, and a transmission chain (not shown) arranged inside the transmission case 8. The rotation case 9 is transmitted to the rotation case 9, and the rotation case 9 is rotationally driven, so that the planting arm 10 alternately takes out the seedlings from the lower part of the seedling bed 12 and plantes them on the rice field.

[2]
Next, the first, second, third and fourth minority clutches 19a, 19b, 19c and 19d will be described.
As shown in FIG. 3, first to fourth minority clutches 19 a to 19 d are provided in order from the right transmission case 8 on the support portion of the rotating case 9 in the transmission case 8. The first to fourth minority clutches 19a to 19d operate and stop 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 minority 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 minority clutches 19a to 19d are operated in a stopped state, the rotating case 9 is in a state where both of the pair of planting arms 10 are located above the pad surface (for example, the rotating case 9 is parallel to the pad surface). Is configured to stop. In this way, each of the first to fourth minority clutches 19a to 19d corresponds to two adjacent planting 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 will be described.
As shown in FIG. 3, the support rail 23 is supported across the transmission case 8, and the lower portion of the seedling bed 12 is supported so as to be movable in the left-right direction along the support rail 23. As shown in FIG. 6, the right and left support frames 25 extend upward from the right and left side portions of the support frame 16, and the support frame 26 is connected to 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 connected along the front side of the upper portion of the seedling platform 12. Is inserted inside the support frame 29. Thereby, the upper part of the seedling bed 12 is supported along the roller 28 so as to be movable in the left-right direction.

  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 connected via the bracket 21. Thereby, the spiral shaft 20 is rotationally driven by the power of the feed case 15, and the feed member 22 is reciprocated laterally and laterally driven along the spiral shaft 20, whereby the seedling bed 12 is moved horizontally along the support rail 23. Are driven back and forth.

  As shown in FIGS. 2 and 3, 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 seedlings of the seedling setting table 12 are provided. The vertical feed mechanism 13 on the mounting surface is configured to operate integrally, and four sets of four 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 FIG. 3, first to fourth vertical feed clutches 24 a to 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 and shut off power to the vertical feed mechanisms 13 on the two seedling setting surfaces adjacent to the seedling setting table 12, thereby allowing two seedlings adjacent to the seedling setting table 12 to be adjacent to each other. The vertical feeding mechanism 13 on the mounting surface 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 planting strips corresponding to the first to fourth minority clutches 19a to 19d can be operated and stopped. The first, second, third, and fourth fertilization clutches 38a, 38b, 38c, and 38d will be described.
As shown in FIGS. 1, 2, and 4, a support frame 30 is disposed along the left-right direction on the rear side of the driver seat 5, and four feeding portions 31 corresponding to two planting strips are connected to the support frame 30. A hopper 32 made of a transparent resin and storing fertilizer is connected across four feeding parts 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 attached to the grounding float 11. Two groovers 35 and one feeding part 31 are connected via a hose 36.

  As shown in FIG. 4, each of the feeding portions 31 is provided with a feeding roll (not shown), and a single drive shaft 37 that transmits power to the feeding roll of the feeding portion 31 is rotatable over the feeding portion 31. It is supported by. First to fourth fertilization clutches 38a to 38d that transmit and shut off the power of the drive shaft 37 to the feeding roll of the feeding portion 31 are provided in each of the feeding portions 31, and the first to fourth fertilization clutches 38a to 38d are provided. It is urged to an operating state by a spring (not shown).

  As shown in FIG. 4, the one-way clutch 33 is fitted on the drive shaft 37, and the output shaft 77 branched from immediately before the rear axle case 34 (see FIG. 1) that supports the rear wheel 2, and the one-way clutch 33. The connecting rod 39 is connected. A blower 40 is provided below the driver seat 5, and pipes 41 extend from the blower 40 to the left and right along the support frame 30, and air is blown to the side opposite to the portion where the hose 36 is connected in the feeding portion 31. A mouth (not shown) is formed, and the air blowing port of the feeding portion 31 is inserted into the pipe 41.

  As a result, as shown in FIGS. 1 and 4, as the seedling platform 12 is reciprocated laterally to the left and right, the rotary case 9 is rotationally driven, and the planting arm is moved from the lower portion of the seedling platform 12. 10 take out seedlings alternately and plant them on the rice field. 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 of the feeding unit 31 is intermittently rotated via the first to fourth fertilization clutches 38 a to 38 d, 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 FIG. 4, when the first fertilization clutch 38 a is operated in the disconnected state, the feeding portion 31 corresponding to the two rotating cases 9 of the rightmost transmission case 8 stops, and the rightmost transmission case 8 Fertilizer is not supplied to the two groovers 35 corresponding to the two rotating cases 9. In this way, each of the first to fourth fertilization clutches 38a to 38d corresponds to two adjacent planting strips.

  As shown in FIG. 4, the operation shaft 63 is rotatably supported across the feeding portion 31 in parallel with the drive shaft 37, and the operation shaft 63 is opposed to the first to fourth fertilization clutches 38 a to 38 d. The first, second, third, and fourth cam members 64a, 64b, 64c, and 64d are connected with their phases shifted by a predetermined angle. An electric motor 65 for rotating the operation shaft 63 is provided at one end of the operation shaft 63, and a potentiometer 66 for detecting the phase of the operation shaft 63 is provided at the other end of the operation shaft 63, as shown in FIG. The detection value of the potentiometer 66 is input to the control device 69 (corresponding to the control means).

  With the above structure, as shown in FIGS. 4 and 7 and [7], [8], and [9] described later, the electric motor 65 is operated by the controller 69, and the electric motor 65 operates the operation shaft 63 and the first shaft. By rotating the ~ 4 cam members 64a to 64d, the first to fourth fertilization clutches 38a to 38d are operated to the activated and stopped states by the first to fourth cam members 64a to 64d.

[5]
Next, the operation structure of the first to fourth minority clutches 19a to 19d and the first to fourth longitudinal feed clutches 24a to 24d will be described.
As shown in FIGS. 5 and 6, right and left brackets 42 that are bent in a U-shape are connected to the front side portion of the seedling base 12. An electric motor 43 (corresponding to an electric mechanism) and a gear case 44 are connected to the right bracket 42, a drive shaft 45 is rotatably supported, a transmission gear 45a fixed to the drive shaft 45, and a pinion gear 44a of the gear case 44, Is biting. A boss portion 46 is coupled to the left bracket 42, a support shaft 47 is rotatably supported by the boss portion 46, and an operation shaft 48 is coupled across the drive shaft 45 and the support shaft 47. Thus, the operation shaft 48 is rotationally driven via the drive shaft 45.

  As shown in FIGS. 5, 6, and 7, a potentiometer 49 is connected to the boss portion 46, and the support shaft 47 and the potentiometer 49 are connected. The detection value of the potentiometer 49 is input to the control device 69. When the operation shaft 48 is driven to rotate as described above, the support shaft 47 also rotates together, and the potentiometer 49 detects the phase of the operation shaft 48.

  As shown in FIGS. 3, 5, and 6, four first, second, third, and fourth cam members 51, 52, 53, and 54 integrally formed of synthetic resin are prepared. First and second cam members 51 and 52 are attached to a portion of the operation shaft 48 inside the right bracket 42, and third and fourth cam members 53 are attached to a portion of the operation shaft 48 inside the left bracket 42. , 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.

  As shown in FIGS. 3, 5, and 6, a support shaft 55 is connected 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, 5, and 6, right and left brackets 58 are connected to lower portions of the right and left brackets 42 in the support frame 29, and wires are respectively connected to the right and left brackets 58. Two outer portions 59 (four in total) are connected, and an inner wire 59 is connected to each of the first to fourth operation portions 56a to 56d. Two wires 61 are extended from the branch portion 60 below the wire 59 (a total of eight wires 61), and the inner of the wire 61 is the first to fourth minority clutches 19a to 19d and the first to fourth longitudinals. It is connected to each of the feed clutches 24a to 24d.

  With the above structure, as shown in FIGS. 3, 5, 6, 7 and [7] [8] [9] described later, the electric motor 43 is operated by the control device 69, and the operation shaft 48 is operated by the electric motor 43. By rotating the first to fourth cam members 51 to 54, the first to fourth operation members 56a to 56d are swung by the first to fourth cam members 51 to 54, and the first to fourth operation members 56a to 56a. The first to fourth minority clutches 19a to 19d and the first to fourth longitudinal feed clutches 24a to 24d are operated in the activated and stopped states via 56d and the wires 59 and 61.

[6]
Next, about the structure of the operation lever 50 (equivalent to an artificial operation tool) which operates the 1st-4th minority number clutch 19a-19d, the 1st-4th longitudinal feed clutch 24a-24d, and the 1st-4th fertilization clutch 38a-38d. explain.
As shown in FIG. 7, a box-like support box 62 is fixed to the right side portion of the steering handle 67 that steers the front wheel 1, and the operation lever 50 is provided on the support box 62. A potentiometer 68 (corresponding to a detection device) is fixed inside the support box 62, and a detection signal of the potentiometer 68 is input to the control device 69. As shown in FIGS. 8A and 8B and FIG. 9, the operation shaft 76 is connected to the detection shaft 68 a of the potentiometer 68, and the end portion of the operation shaft 76 is formed by a boss portion 78 fixed to the support box 62. Is supported rotatably. A bracket 76a is fixed to the operation shaft 76, and the operation lever 50 is supported so as to be swingable around a horizontal axis P1 in the left-right direction of the bracket 76a of the operation shaft 76.

  As shown in FIGS. 7 and 8 (a), a V-shaped opening in plan view is formed in the upper portion of the support box 62, the operation lever 50 is inserted into the opening, and the central portion of the opening is It is set to the full-strand operating position ON. An opening extending toward the right diagonally forward from the full-strand operation position ON is set as the right operation path 79, and an opening extending diagonally left forward from the full-strand operation position ON is the left operation path. 80 (corresponding to the right operation path 79 and the left operation path 80 extending obliquely from each other in the same direction and away from each other). In the right operation path 79, the two-row stop position R2, the four-row stop position R4, the six-row stop position R6, and the all-row stop position OFF are set. A stop position L4, a six-strip stop position L6, and an all-strip stop position OFF are set.

  As shown in FIGS. 8 (a), (b) and FIG. 9, the operation lever 50 is turned on in the full-strand operating position, the 2, 4, 6-strand stop positions R2, R4, R6 of the right operation path 79 and the full-strand stop position. When turned OFF, the operating shaft 76 and the detection shaft 68a of the potentiometer 68 are rotated in the range between the full-strand operating position ON and the full-strand stopping position OFF of the right operating path 79 (the artificial operation tool is moved to the right). When the operation path is operated, the detection shaft of the detection device is rotated in a range from the predetermined phase to the first direction side). When the operation lever 50 is operated to the full-strand operating position ON, the left, fourth, and sixth-strand stop positions L2, L4, and L6 of the left operation path 80 and the full-strand stop position OFF, the operation shaft 76 and the detection shaft 68a of the potentiometer 68 are Rotation operation is performed in the range between the all-strand operation position ON and the all-strand stop position OFF of the left operation path 80 (when the artificial operation tool is operated to the left operation path, the detection axis of the detection device moves in the second direction from the predetermined phase. Equivalent to a state where it is rotated within the range of the side)

  As described above, the operation lever 50 is moved to the full-strand operating position ON, the second, fourth and sixth-figure stop positions R2, R4, and R7 of the right operation path 79 and the whole-strand stop position OFF, When the six-strip stop positions L2, L4, L7 and the all-strip stop position OFF are operated, the phase (angle) of the operation shaft 76 and the detection shaft 68a of the potentiometer 68 at each position is as shown in FIG. The detection signals of the potentiometer 68 are different at each position.

Accordingly, as shown in FIGS. 8A, 8B, and 9, the operation lever 50 is moved to the full-strand operating position ON by the detection signal of the potentiometer 68, and the second, fourth and sixth strips of the right and left operation paths 79, 80. It is possible to determine which of the stop positions R2, R4, R7, L2, L4, L6 and the all-strand stop position OFF, and the control device 69 will be described later based on the detection signal of the potentiometer 68. [7] [8] The electric motors 43 and 65 are operated as described in [9], and the first to fourth minority clutches 19a to 19d, the first to fourth longitudinal feed clutches 24a to 24d, and the first to fourth clutches. The fertilizer application clutches 38a to 38d are operated to the activated and stopped states.
In this case, the right and left operation paths 79 and 80 may be extended from the full-strand operation position ON toward the right and left diagonally rearward directions. When the right and left operation paths 79 and 80 are extended from the full-strand operation position ON to the right and left diagonally forward (backward), the right and left operation paths 79 and 80 are not straight but slightly inward (or outward). You may comprise in the curve shape which curves.

[7]
Next, the operation of the first to fourth minority clutches 19a to 19d, the first to fourth longitudinal feed clutches 24a to 24d, and the first to fourth fertilization clutches 38a to 38d by the operation lever 50 will be described.
As shown in FIGS. 8 (a), (b), and FIG. 9, when the operation lever 50 is operated to the full operation position ON, the first to fourth minority clutches 19a to 19d and the first to fourth longitudinal feed clutches. 24a-24d, the 1st-4th fertilization clutch 38a-38d are operated by the operation state (all-line operation state).

  As shown in FIGS. 3, 5, and 6, when the operation lever 50 is operated from the full-line operation position ON to the double-line stop position R <b> 2 of the right operation path 79, the operation shaft 48 and the first to fourth cam members are driven by the electric motor 43. 51 to 54 are rotationally driven in the forward direction by a predetermined angle, the roller 57 of the first operation portion 56a rides on the first cam member 51, the first operation portion 56a is swung upward, and the wires 59 and 61 are moved. Is pulled, and the first minority number clutch 19a and the first longitudinal feed clutch 24a are operated in a stopped state. At the same time, as shown in FIG. 4, the operating shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven in the forward direction by a predetermined angle by the electric motor 65, and the first cam member 64a is moved to the first fertilization clutch 38a. The first fertilizer clutch 38a is slid to the left in FIG. 4 to be stopped.

  As shown in FIGS. 3, 5, and 6, when the operation lever 50 is operated from the two-row stop position R <b> 2 of the right operation path 79 to the four-row stop position R <b> 4, the operation shaft 48 and the first to fourth cam members are driven by the electric motor 43. 51 to 54 are further rotationally driven in the forward direction by a predetermined angle, the roller 57 of the second operation portion 56b rides on the second cam member 52, and the second operation portion 56b swings upward by the second cam member 52. In operation, the wires 59 and 61 are pulled, and the second minority clutch 19b and the second longitudinal feed clutch 24b are operated in a stopped state. At the same time, as shown in FIG. 4, the operation shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the forward direction by the electric motor 65, and the second cam member 64b is moved to the second fertilization clutch. 38b, the second fertilizer clutch 38b is slid to the left in FIG. 4 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 roller 57 of the first operation portion 56a is not moved. The state of riding on the first cam member 51 is maintained, and the first small number of clutches 19a and the first longitudinal feed clutch 24a are maintained in the stopped state, and the first fertilizing clutch 38a is maintained by the first cam member 64a. Is maintained in a stopped state in which it is slid to the left in FIG.

  As shown in FIGS. 3, 5, and 6, when the operation lever 50 is operated from the four-strip stop position R <b> 4 of the right operation path 79 to the six-strip stop position R <b> 6, the operation shaft 48 and the first to fourth cam members are driven by the electric motor 43. 51 to 54 are further rotationally driven in the forward direction by a predetermined angle, the roller 57 of the third operation portion 56c rides on the third cam member 53, and the third operation portion 56c swings upward by the third cam member 53. In operation, the wires 59 and 61 are pulled, and the third small number of clutches 19c and the third longitudinal feed clutch 24c are operated in a stopped state. At the same time, as shown in FIG. 4, the operating shaft 63 and the first to fourth cam members 64 a to 64 d are further rotated by a predetermined angle in the forward direction by the electric motor 65, and the third cam member 64 c is moved to the third fertilization clutch. 38c, the third fertilization clutch 38c is slid to the left in FIG. 4 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 first roller 57 rides on the first and second cam members 51 and 52 is maintained, and the first and second minority clutches 19a and 19b and the first and second longitudinal feed clutches 24a and 24b are maintained in a stopped state. Therefore, the first and second fertilization clutches 38a and 38b are maintained in the stopped state in which the first and second fertilization clutches 38a and 38b are slid to the left in FIG. 4 by the first and second cam members 64a and 64b.

  As shown in FIGS. 3, 5, and 6, when the operation lever 50 is operated from the six-strip stop position R <b> 6 of the right operation path 79 to the full-strip stop position OFF, the operation shaft 48 and the first to fourth cam members are driven by the electric motor 43. 51 to 54 are further rotationally driven in the forward direction by a predetermined angle, and the roller 57 of the fourth operation portion 56d rides on the fourth cam member 54, and the fourth operation portion 56d swings upward by the fourth cam member 54. In operation, the wires 59 and 61 are pulled, and the fourth minority clutch 19d and the fourth longitudinal feed clutch 24d are operated in a stopped state. At the same time, the operating shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the forward direction by the electric motor 65, and the fourth cam member 64d contacts the fourth fertilization clutch 38d, The fourth fertilization clutch 38d is slid to the left in FIG. 4 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 where the rollers 57 of the first, second, third cam members 51, 52, 53 are ridden, and the first, second, third minority clutches 19a, 19b, 19c and , 3 vertical feed clutches 24a, 24b, 24c are maintained in a stopped state, and the first, second, and third fertilization clutches 38a, 38b, 38c are illustrated by the first, second, third cam members 64a, 64b, 64c. 4 is maintained in a stopped state in which it is slid to the left of the sheet. As a result, the first to fourth minority 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.

[8]
As described in [7] above, in the state where the operation lever 50 is operated to the all-strand stop position OFF of the right operation path 79 (all-strand stop state), as shown in FIGS. When 50 is operated from the all-strip stop position OFF of the right operation path 79 to the six-strip stop position R6, the operation shaft 48 and the first to fourth cam members 51 to 54 are rotated by a predetermined angle in the reverse direction by the electric motor 43. Thus, the fourth operation portion 56d is swung downward by the fourth cam member 54, the wires 59 and 61 are returned, and the fourth minority clutch 19d and the fourth longitudinal feed clutch 24d are operated. The At the same time, as shown in FIG. 4, the operation shaft 63 and the first to fourth cam members 64a to 64d are rotated by a predetermined angle in the reverse direction by the electric motor 65, and the fourth fertilization clutch 38d is moved to the right in FIG. Is slid to the operating state.

  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 where the rollers 57 of the first, second, third cam members 51, 52, 53 are ridden, and the first, second, third minority clutches 19a, 19b, 19c and , 3 vertical feed clutches 24a, 24b, 24c are maintained in a stopped state, and the first, second, and third fertilization clutches 38a, 38b, 38c are illustrated by the first, second, third cam members 64a, 64b, 64c. No. 4 is maintained in a stopped state that is slid to the left of the drawing.

As shown in FIGS. 3, 5, and 6, when the operation lever 50 is operated from the 6-strip stop position R 6 to the 4-strip stop position R 4 of the right operation path 79, the operation shaft 48 and the first to fourth cam members are driven by the electric motor 43. 51 to 54 are further rotated by a predetermined angle in the opposite direction, the third operation member 56c is swung downward by the third cam member 53, the wires 59 and 61 are returned, and the third minority clutch 19c and the third longitudinal feed clutch 24c are operated to the operating state. At the same time, as shown in FIG. 4, the operating shaft 63 and the first to fourth cam member 64a~64d by the electric motor 65 is driven to rotate by Jo Tokoro angle in the opposite direction A third fertilizer clutch 38c is the plane of FIG. 4 It is slid to the right and operated.

  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 first roller 57 rides on the first and second cam members 51 and 52 is maintained, and the first and second minority clutches 19a and 19b and the first and second longitudinal feed clutches 24a and 24b are maintained in a stopped state. Therefore, the first and second fertilization clutches 38a and 38b are maintained in the stopped state in which the first and second fertilization clutches 38a and 38b are slid to the left in FIG. 4 by the first and second cam members 64a and 64b.

  As shown in FIGS. 3, 5, and 6, when the operation lever 50 is operated from the four-strip stop position R <b> 4 of the right operation path 79 to the two-strip stop position R <b> 2, the operation shaft 48 and the first to fourth cam members are driven by the electric motor 43. 51 to 54 are further rotated by a predetermined angle in the opposite direction, the second operating member 56b is swung downward by the second cam member 52, the wires 59 and 61 are returned, and the second minority clutch 19b and the second longitudinal feed clutch 24b are operated. At the same time, as shown in FIG. 4, the operating shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the opposite direction by the electric motor 65, and the second fertilizing clutch 38b is moved to the right side of FIG. It is slid in the direction and operated.

  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 roller 57 of the first operation portion 56a is not moved. The state of riding on the first cam member 51 is maintained, and the first small number of clutches 19a and the first longitudinal feed clutch 24a are maintained in the stopped state, and the first fertilizing clutch 38a is maintained by the first cam member 64a. Is maintained in a stopped state in which it is slid to the left in FIG.

  As shown in FIGS. 3, 5, and 6, when the operation lever 50 is operated from the two-row stop position R <b> 2 of the right operation path 79 to the full-row operation position ON, the operation shaft 48 and the first to fourth cam members are driven by the electric motor 43. 51 to 54 are further rotated by a predetermined angle in the opposite direction, the first operating member 56a is swung downward by the first cam member 51, the wires 59 and 61 are returned, and the first minority clutch 19a and the first vertical feed clutch 24a are operated. At the same time, as shown in FIG. 4, the operation shaft 63 and the first to fourth cam members 64a to 64d are further rotated by a predetermined angle in the opposite direction by the electric motor 65, and the first fertilizer clutch 38a is moved to the right side of the page of FIG. It is slid in the direction and operated. As a result, the full-line operating state is restored.

[9]
As shown in FIGS. 3, 5, and 6, in a state where the operation lever 50 is operated to the full-strand operation position ON (all-strand operation state), the operation lever 50 is moved from the full-strand operation position ON to 2 of the left operation path 80. When the strip stop position L2 is operated, the operation shaft 48 and the first to fourth cam members 51 to 54 are rotated by a predetermined angle in the reverse direction by the electric motor 43, and the roller 57 of the fourth operation portion 56d is moved to the fourth cam member. 54, the fourth operating portion 56d is swung upward, the wires 59 and 61 are pulled, and the fourth minority clutch 19d and the fourth longitudinal feed clutch 24d are operated in a stopped state. At the same time, as shown in FIG. 4, the operating shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven in the reverse direction by a predetermined angle by the electric motor 65, and the fourth cam member 64d is moved to the fourth fertilization clutch 38d. The fourth fertilizer clutch 38d is slid to the left in FIG. 4 and is stopped.

As described above, in a state where the operation lever 50 is operated to the full-strand operation position ON (all-strand operation state), the operation lever 50 is stopped from the full-strand operation position ON to 2, 4, and 6 on the left operation path 80. By operating the positions 2L, 4L, 6L and the all-strip stop position OFF, in the reverse order to the previous item [7],
The fourth minority clutch 19d, the fourth longitudinal feed clutch 24d, and the fourth fertilization clutch 38d are stopped (the third and second minority clutches 19c, 19b, 19a and the third, second, first longitudinal clutches 24c, 24b). , 24a, operating state of the third, second, and first fertilization clutches 38c, 38b, 38a) (two-row stop position 2L of the left operation path 80),
The fourth and third minority clutches 19d and 19c, the fourth and third longitudinal feed clutches 24d and 24c, and the fourth and third fertilization clutches 38d and 38c are stopped (second and first minority clutches 19b and 19a and second and first clutches). (Operating state of the longitudinal feed clutches 24b, 24a, the second and first fertilization clutches 38b, 38a) (four-line stop position 4L of the left operation path 80),
The fourth and third and second minority 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 minority). The operating state of the first clutch 19a, the first longitudinal clutch 24a, and the first fertilizer clutch 38a) (six-line stop position 6L of the left operation path 80),
In addition, the all-strip stop state is obtained (the all-strip stop position OFF of the left operation path 80).

  As described above, in a state where the operation lever 50 is operated to the all-line stop position OFF of the left operation path 80 (all-line stop state), the operation lever 50 is moved from the all-line stop position OFF to the six-line stop position of the left operation path 80. When operated to 6 L, the operating shaft 48 and the first to fourth cam members 51 to 54 are rotationally driven in the forward direction by a predetermined angle by the electric motor 43, and the first operation portion 56 a is swung downward by the first cam member 51. In operation, the wires 59 and 61 are returned, and the first small number of clutches 19a and the fourth longitudinal feed clutch 24a are operated. At the same time, the operation shaft 63 and the first to fourth cam members 64a to 64d are rotationally driven in the forward direction by a predetermined angle by the electric motor 65, and the first fertilization clutch 38a is slid to the right in FIG. Manipulated to state.

As described above, in a state where the operation lever 50 is operated to turn the all-line stop position OFF of the left operation path 80 (all-line stop state), the operation lever 50 is moved to the 6, 4, and 2 line stop positions 6L, By operating to 4L, 2L and all-strand operation position ON, in the reverse order to the previous item [8],
The fourth and third and second minority 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 minority). The operating state of the first clutch 19a, the first longitudinal clutch 24a, and the first fertilizer clutch 38a) (six-line stop position 6L of the left operation path 80),
The fourth and third minority clutches 19d and 19c, the fourth and third longitudinal feed clutches 24d and 24c, and the fourth and third fertilization clutches 38d and 38c are stopped (second and first minority clutches 19b and 19a and second and first clutches). (Operating state of the longitudinal feed clutches 24b, 24a, the second and first fertilization clutches 38b, 38a) (four-line stop position 4L of the left operation path 80),
The fourth minority clutch 19d, the fourth longitudinal feed clutch 24d, and the fourth fertilization clutch 38d are stopped (the third and second minority clutches 19c, 19b, 19a and the third, second, first longitudinal clutches 24c, 24b). , 24a, operating state of the third, second, and first fertilization clutches 38c, 38b, 38a) (two-row stop position 2L of the left operation path 80),
In addition, the full-strand operating state is obtained (full-strand operating position ON).

  As shown in FIG. 7, a fertilization stop switch 73 configured as a push-on / push-off type push button is provided on the rear side of the driver seat 5 (front side of the hopper 32). As a result, when the fertilizer 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 correctly set by the electric motor 65 regardless of the operation lever 50, as shown in FIG. The first to fourth fertilization clutches 38a to 38d are driven to rotate in the direction (or the reverse direction) (the first to fourth minority clutches 19a to 19d and the first to fourth longitudinal feed clutches 24a). -24d follows the control lever 50). When the fertilizer stop switch 73 is pushed and operated to the cutting position, the first to fourth fertilization clutches 38a to 38d are returned to the state according to the operation lever 50.

Hereinafter, embodiments of the invention according to the present invention will be described. In this case, in the embodiment of the present invention, portions different from the above-described reference embodiment will be described, and other portions are the same as those of the above-described reference embodiment.
[Embodiment of the Invention]
As shown in FIGS. 10A and 10B, the operation shaft 70 is rotatably supported around the horizontal axis P2 in the left-right direction inside the support box 62, and a bracket 70a is fixed to the operation shaft 70. The operation lever 50 is swingably supported around the horizontal axis P3 in the front-rear direction of the bracket 70a of the operation shaft 70. A potentiometer 68 is fixed inside the support box 62, a detection signal of the potentiometer 68 is input to the control device 69 (see FIG. 7), a detection arm 71 is connected to a detection shaft 68a of the potentiometer 68, and the detection arm 71 A long hole 71a is formed in the upper part. The operation rod 50 a is fixed to the operation lever 50, and the lower end portion of the operation rod 50 a is extended so as to be positioned on the downward extension line of the operation lever 50, and the operation rod 50 a is a long hole 71 a of the detection arm 71. Has been inserted.

  As shown in FIGS. 10 (a) and 10 (b), an opening having a U-shape in plan view is formed in the upper portion of the support box 62, the operation lever 50 is inserted into the opening, and the central portion of the opening is It is set to the full-strand operating position ON. An opening extending forward from the right lateral side of the full-strand operating position ON is set as the right operation path 79 and extends forward from the left lateral side of the full-strand operating position ON. The opening is set as the left operation path 80. In the right operation path 79, the two-row stop position R2, the four-row stop position R4, the six-row stop position R6, and the all-row stop position OFF are set. A stop position L4, a six-strip stop position L6, and an all-strip stop position OFF are set.

  As shown in FIGS. 10A and 10B, a detent member 72 formed by bending a single spring wire is fixed to the back surface of the upper portion of the support box 62 by two bolts 74. In the detent member 72, the 2, 4, 6 stop positions R2, R4, R7 of the right operation path 79 and the full stop position OFF, the 2, 4, 6 stop positions L2, L4, L7 of the left operation path 80, and A portion corresponding to the all-strand stop position OFF is bent in a V shape in a plan view to form a recess 72a, and the 2, 4, 6-strand stop positions R2, R4, R7 of the right operation path 79 and all the strips are formed. The operating lever 50 is held by the recess 72a of the detent member 72 at the stop position OFF, the 2, 4, 6 stop positions L2, L4, L7 of the left operation path 80 and the full stop position OFF.

  As shown in FIGS. 10 (a), 10 (b) and 11, when the operating lever 50 is operated to the full operation position ON, the operating rod 50a of the operating lever 50 and the detection arm 71 (the detection shaft 68a of the potentiometer 68). ) Is located at the position (ON) shown in FIG. When the operating lever 50 is operated from the full-strand operating position ON to the right side, the operating rod 50a of the operating lever 50 is positioned at the position (RON) shown in FIGS. When the operation path 79 is operated to the 2, 4, 6 stop positions R2, R4, R7 and the full stop position OFF, the operation rod 50a of the operation lever 50 is moved to the positions (2R, 4R, 6R, ROFF) shown in FIG. To position. As a result, the detection arm 71 (the detection shaft 68a of the potentiometer 68) is swung (rotated) in the range between the position (ON) and the position (ROFF) shown in FIG. When the operation path is operated, this corresponds to a state in which the detection axis of the detection device is rotated within a range on the first direction side from a predetermined phase).

  As shown in FIGS. 10 (a), 10 (b) and 11, the operating lever 50 is operated from the full-strand operating position ON to the left lateral portion, and the 2, 4, 6-strand stopping position L2, of the left operating path 80. When operating to L4, L7 and all-strand stop position OFF, the operating rod 50a of the operating lever 50 is positioned at the positions (LON, 2L, 4L, 6L, LOFF) shown in FIG. As a result, the detection arm 71 (the detection shaft 68a of the potentiometer 68) is swung (rotated) within the range between the position (ON) and the position (LOFF) shown in FIG. When the path is operated, the detection axis of the detection device corresponds to a state in which the detection axis is rotated in a range from the predetermined phase to the second direction side).

  As a result, as shown in FIGS. 10A and 10B and FIG. 11, the operating lever 50 is set to the all-strip operating position ON, the 2, 4, 6-strip stop positions R2, R4, R7 of the right operating path 79 and all When the strip stop position is OFF, the left, fourth, and sixth strip stop positions L2, L4, and L7 of the left operation path 80 and the all-strand stop position are OFF, the detection arm 71 (the detection shaft 68a of the potentiometer 68) is at each position. The phase (angle) is different, and the detection signal of the potentiometer 68 is different at each position.

Accordingly, as shown in FIGS. 10A, 10B, and 11, the operation lever 50 is turned on by the detection signal from the potentiometer 68, and the 2, 4, and 6 strips of the right and left operation paths 79 and 80 are turned on. It is possible to determine which of the stop positions R2, R4, R7, L2, L4, and L6 and the all-strand stop position OFF are operated. Based on the detection signal of the potentiometer 68, the control device 69 performs the above-described operation. The electric motors 43 and 65 are operated as described in [7], [8], and [9] of [Reference Form] , and the first to fourth minority clutches 19a to 19d and the first to fourth longitudinal feed clutches 24a to 24d. Then, the first to fourth fertilization clutches 38a to 38d are operated in the activated and stopped states.

[First Alternative Embodiment of the Invention]
Instead of the configuration of the operation lever 50 of the above-mentioned [Embodiment of the invention] , it may be configured as shown in FIGS.
As shown in FIGS. 12B and 13, a bracket 75 having a U-shape in plan view is fixed inside the support box 62, and the operation shaft 81 rotates about the horizontal axis P <b> 4 in the left-right direction of the bracket 75. A U-shaped bracket 81 a and a flat bracket 81 b are fixed to the operation shaft 81. A bracket 50b having an inverted J-shape when viewed from the side is fixed to the base of the operation lever 50, a flat operation plate 50c is fixed to the bracket 50b, and the bracket 50b (operation lever 50) is disposed before and after the bracket 81a of the operation shaft 81. Is pivotably supported around the horizontal axis P5 in the direction.

  As shown in FIGS. 12 (a) and 12 (b), a U-shaped opening in a plan view is formed on the upper portion of the support box 62, the operation lever 50 is inserted into the opening, and the central portion of the opening is It is set to the full-strand operating position ON. An opening extending forward from the right lateral side of the full-strand operating position ON is set as the right operation path 79 and extends forward from the left lateral side of the full-strand operating position ON. The opening is set as the left operation path 80. In the right operation path 79, the two-row stop position R2, the four-row stop position R4, the six-row stop position R6, and the all-row stop position OFF are set. A stop position L4, a six-strip stop position L6, and an all-strip stop position OFF are set.

  As shown in FIGS. 12B and 13, the operation shaft 82 is supported by the boss portion 75 a fixed to the bracket 75 so as to be rotatable around the horizontal axis P <b> 6 in the left-right direction, and is supported by the bracket 75. The potentiometer 68 is fixed to the part 75b, the detection signal of the potentiometer 68 is input to the control device 69 (see FIG. 7), and the detection shaft 68a of the potentiometer 68 is connected to the operation shaft 82. An operation arm 83 having a G-shape in front view is connected to the operation shaft 82, and a first engagement portion 83 a facing the right side in FIG. 12B is provided on the upper portion of the operation arm 83. A second engaging portion 83b is provided at the lower part and faces leftward in FIG. A long hole 50d is formed over the operation plate 50c of the operation lever 50, and three holes 50e, 50f, 50g are formed in the bracket 50b of the operation lever 50. A detent member 84 configured by bending a single spring wire is fixed to the bracket 81b of the operation shaft 81, and the tip of the detent member 84 is bent into a letter shape in plan view to form a convex portion 84a.

  As shown in FIGS. 12A and 12B and FIG. 13, when the operating lever 50 is operated to the full-strand operating position ON, the convex portion 84a of the detent member 84 engages with the hole 50e of the operating lever 50. The operating lever 50 is held at the full-strand operating position ON, and the first and second engaging portions 83a and 83b of the operating arm 83 are opposed to the upper and lower portions of the long hole 50d of the operating lever 50. .

  As shown in FIGS. 12A and 12B and FIG. 13, when the operating lever 50 is operated from the full-strand operating position ON to the right side portion, the first engaging portion 83 a of the operating arm 83 is the length of the operating lever 50. The upper part of the hole 50d enters the upper part of the hole 50d, and the lower part of the long hole 50d of the operating lever 50 is separated from the second engaging part 83b of the operating arm 83 to the left in FIG. The operation lever 50 is held by engaging with the hole 50 f of the operation lever 50. When the operation lever 50 is operated to the 2, 4, 6 stop positions R2, R4, R7 and the full stop position OFF of the right operation path 79, the operation plate 50c (long hole 50d) of the operation lever 50 and the operation arm 83 are Due to the engagement with the first engagement portion 83a, the first engagement portion 83a of the operation arm 83 is located at the position (2R, 4R, 6R, ROFF) shown in FIG. As a result, the operation arm 83 (the detection shaft 68a of the potentiometer 68) is swung (rotated) within the range between the position (83a, ON) and the position (83a, OFF) shown in FIG. When the tool is operated in the right operation path, the detection axis of the detection device is rotated in a range from the predetermined phase to the first direction side).

  As shown in FIGS. 12A and 12B and FIG. 13, when the operation lever 50 is operated from the full-strand operation position ON to the left side portion, the second engagement portion 83 b of the operation arm 83 is extended to the length of the operation lever 50. The lower portion of the hole 50d enters the lower portion of the hole 50d, and the upper portion of the elongated hole 50d of the operation lever 50 is separated from the first engagement portion 83a of the operation arm 83 to the right in FIG. The operation lever 50 is held by engaging with the hole 50 g of the operation lever 50. When the operation lever 50 is operated to the 2, 4, 6 stop positions L2, L4, L7 and the full stop position OFF of the left operation path 80, the operation plate 50c (long hole 50d) of the operation lever 50 and the operation arm 83 Due to the engagement with the second engagement portion 83b, the second engagement portion 83b of the operation arm 83 is located at the position (2L, 4L, 6L, LOFF) shown in FIG. As a result, the operation arm 83 (the detection shaft 68a of the potentiometer 68) is swung (rotated) in the range between the position (83b, ON) and the position (83b, OFF) shown in FIG. When the tool is operated to the left operation path, this corresponds to a state in which the detection axis of the detection device is rotated within a range from the predetermined phase to the second direction).

  As a result, as shown in FIGS. 12 (A), 12 (B) and FIG. 13, the operating lever 50 is set to the all-strip operating position ON, the 2, 4, 6-strip stop positions R2, R4, R7 of the right operating path 79 and all When the strip stop position is OFF, the left, fourth, and sixth strip stop positions L2, L4, and L7 of the left operation path 80 and all the strip stop positions are OFF, the operation arm 83 (the detection shaft 68a of the potentiometer 68) is at each position. The phase (angle) is different, and the detection signal of the potentiometer 68 is different at each position.

Accordingly, as shown in FIGS. 12A, 12B, and 13, the operation lever 50 is moved to the full-strand operating position ON by the detection signal of the potentiometer 68, and the second, fourth and sixth strips of the right and left operation paths 79, 80. It is possible to determine which of the stop positions R2, R4, R7, L2, L4, and L6 and the all-strand stop position OFF are operated. Based on the detection signal of the potentiometer 68, the control device 69 performs the above-described operation. The electric motors 43 and 65 are operated as described in [7], [8], and [9] of [Reference Form] , and the first to fourth minority clutches 19a to 19d and the first to fourth longitudinal feed clutches 24a to 24d. Then, the first to fourth fertilization clutches 38a to 38d are operated in the activated and stopped states.

[Second Embodiment of the Invention]
In the above-mentioned [Embodiment of the invention] [First another embodiment of the invention] , the operating lever 50 is moved to the rear side portion or the left side portion of the steering handle 67 and the right side portion (or the left side portion of the driver seat 5). You may prepare for a side part. The electric motors 43 and 65 are abolished, and an electric cylinder and an electromagnetic solenoid (for each of the first to fourth minority clutches 19a to 19d, the first to fourth longitudinal feed clutches 24a to 24d, and the first to fourth fertilization clutches 38a to 38d) (Equivalent to an electric mechanism) (not shown) may be provided, and these may be configured to be operated and stopped.
The present invention can be applied not only to the 8-row type seedling planting device 7 but also to the 10-row type, 6-row type, and 5-row type seedling planting device 7.
The present invention can also be applied to a riding type rice transplanter that is not equipped with the hopper 32, the feeding part 31, the grooving device 35, the hose 36, and the first to fourth fertilization clutches 38a to 38d.

Overall side view of reference type rice transplanter Overall plan view of a reference type rice transplanter Overall plan view of the seedling planting device of the reference form 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 of the reference form Vertical 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 of the reference form Longitudinal side view of the vicinity of the electric motor, the operating shaft, the first cam member, and the first operating portion in the seedling bed of the reference form The figure which shows the linkage state of the control lever of an reference form , an electric motor, and a control apparatus (B) Plan view of the control lever of the reference form , right and left operation path, (b) Vertical rear view of the vicinity of the control lever, right and left control path of the reference form , and potentiometer Longitudinal side view of the control lever, right and left operation path, and potentiometer near the reference form In an embodiment of the invention , (a) a plan view of an operation lever, right and left operation paths, (b) a longitudinal side view of the vicinity of an operation lever, right and left operation paths, and a potentiometer In the embodiment of the invention, a plan view near the potentiometer In the first alternative embodiment of the invention , (a) a plan view of the operation lever, the right and left operation paths, (b) a longitudinal side view of the vicinity of the operation lever, the right and left operation paths, and the potentiometer. In the first alternative embodiment of the invention, a longitudinal side view of the operation lever, the right and left operation paths, and the vicinity of the potentiometer In the background art, a perspective view showing an artificial operation tool, right and left operation paths, and a detection device In the background art, a perspective view showing an artificial operation tool, right and left operation paths, and a detection device In the background art, a perspective view showing an artificial operation tool, right and left operation paths, and a detection device In the background art, a perspective view showing an artificial operation tool, right and left operation paths, and a detection device

7 Seedling planting device 10 Planting arm 19a, 19b, 19c, 19d Small number of clutches 43 Electric mechanism 50 Artificial operation tool
50d, 71a Long hole 68 Detection device, potentiometer 68a Potentiometer detection shaft 69 Control means
71, 83 Arm 79 Right operation path 80 Left operation path
ON All-line operation position

Claims (2)

A planting arm for planting seedlings on the rice field is arranged in a planting planting device at predetermined intervals in the left-right direction according to the planting strip, and a small number of clutches that can be operated and stopped by a small number of planting arms. A plurality of
An electric mechanism that can be operated to operate and stop the small number of clutches, a control means for operating the electric mechanism, and an artificial operation tool that is artificially operated,
An all-strand operating position; a right operation path extending forward from an end of a path extending to the right side from the all-strand operating position; and a left side extending from the all-strand operating position. A left operation path extending forward from an end portion of the path, and configuring the all-strip operation position, the right and left operation paths in a U shape in plan view,
Detecting the operation position of the human operation tool at the full-line operation position, and when the human-operation tool is operated from the full-line operation position to the right operation path, A single detection device that detects an operation position and detects an operation position of the artificial operation tool in the left operation path when the human operation tool is operated from the full-line operation position to the left operation path; ,
The single detection device is constituted by a potentiometer having a rotary detection shaft,
Based on the detection signal of the single detection device, when the artificial operating tool is operated to the full-strand operating position, all the minority clutches are operated to operate, and the artificial operating tool is operated to the right from the full-strand operating position. When the path is operated, the right minority clutch is sequentially operated in the stopped state, and when the artificial operation tool is operated from the full-arm operating position to the left operation path, the left minority clutch is sequentially operated from the stopped state. A riding type rice transplanter that constitutes the control means. The detection shaft is provided with an arm, a long hole is formed in one of the artificial operation tool and the arm, and the other of the artificial operation tool and the arm is inserted into the long hole,
When the artificial operation tool is operated to the full-strand operating position, the detection shaft of the detection device is operated to a predetermined phase,
When the artificial operation tool is operated on the right operation path, the detection shaft of the detection device is rotated in a range from the predetermined phase to the first direction side,
When the human operating tool is operated to the left operating path, the human operating tool is operated such that the detection axis of the detection device is rotated from a predetermined phase in a range of the second direction opposite to the first direction. The riding type rice transplanter according to claim 1, wherein the arm is linked.

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