JP2010213640A - Rice transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice transplanter having improved assemblability while having a construction enabling an engine to be miniaturized. <P>SOLUTION: The rice transplanter includes a seedling-carrying platform 46 and a seedling-transplanting device 2 having a plurality of transplanting tine units (transplanting tines 57, transplanting tine-driving rotary shafts 58, transmission shafts 54 and the like) in the rear side of a traveling machine body 1 having front wheels 3 and rear wheels 4. The transplanting tine unit includes a plurality of the transplanting tines 57, electrically driven motors 100 for the transplanting tines, in the same number as that of the plurality of the transplanting tines 57, and an electrically driven motor 101 for moving the seedling-carrying platform 46 in the horizontal and vertical directions, and is constituted so that each of the transplanting tines 57 may be driven separately by each of the electrically driven motors 100 for the transplanting tines. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rice transplanter that includes a seedling planting device having a seedling stand, a planting claw, and the like, and continuously performs seedling planting work.

  In a conventional rice transplanter, a seedling planting device having a seedling table and a planting claw is attached to a traveling machine body equipped with an engine through a link mechanism so that it can be moved up and down. A structure for operating a feed mechanism or a longitudinal feed mechanism is known (see Patent Document 1). Further, instead of the engine, a traveling electric motor for moving the traveling machine body and a planting electric motor for driving the seedling planting device are provided, and the rotational speed is proportional to the rotational speed of the traveling electric motor that rotates at a constant speed. And the structure which rotates the electric motor for planting is also well-known (refer patent document 2).

JP 2006-141323 A JP 2005-224154 A

  In patent document 1, since the seedling planting device is operated by the power of the engine provided in the traveling machine body, there are problems that the engine cannot be reduced in size and the traveling machine body cannot be reduced in weight. In addition, when a planting electric motor and a traveling electric motor are provided as in Patent Document 2, a large capacity battery is required as a driving source for the planting electric motor and the traveling electric motor. There were problems such as high costs. In Patent Document 2, since a plurality of planting claws are operated by a single planting electric motor, in order to change the number of planting strips, from the planting electric motor to each planting claw. In the middle of power transmission, it was necessary to provide a stopping clutch or the like.

  This invention solves the said problem, and provides the rice transplanter which can improve assembly property, although it is the structure which can reduce an engine in size.

  In order to achieve the above object, the rice transplanter according to the first aspect of the present invention includes a seedling planting device having a seedling stand and a plurality of planting claw units behind a traveling machine body having front front wheels and rear wheels. Each of the planting claws unit includes a plurality of planting claws, and has the same number of planting claw electric motors as the plurality of planting claws, and the seedling mounting table is laterally fed or vertically fed. An electric motor for a seedling stand for feeding operation is provided, and each planting claw is driven individually by each planting claw electric motor.

  According to a second aspect of the present invention, in the rice transplanter according to the first aspect of the present invention, the seedling table electric motor that operates the seedling table in a lateral feed or a vertical feed operation includes a lateral feed electric motor and a vertical feed. The seedling stage is moved in the left-right direction by the lateral feed electric motor, and the seedling mat on the seedling stage is moved in the take-out direction by the vertical feed electric motor. It is a feature.

  According to a third aspect of the present invention, in the rice transplanter according to the first aspect, the vehicle includes a vehicle speed sensor that detects a moving speed of the traveling machine body, and the electric power for the planting claw is based on a detection result of the vehicle speed sensor. The present invention is characterized in that the motor or the seedling stage electric motor is controlled.

  According to a fourth aspect of the present invention, in the rice transplanter according to the first aspect, the electric motor for planting claws or the seedling mounting table, using a generator driven by an engine mounted on the traveling machine body as a drive source. The electric motor is configured to operate.

  According to invention of Claim 1, in the rice transplanter which installed the seedling planting apparatus which has a seedling mounting stand and several planting claw units behind the traveling machine body which has a front wheel and a rear wheel, said each The planting claw unit includes a plurality of planting claws, and has the same number of planting claw electric motors as the plurality of planting claws, and a seedling table electric motor that causes the seedling table to be laterally or vertically fed. And each of the planting claws is configured to be driven individually by the planting claw electric motor. It is possible to easily construct a multi-row planting seedling planting device having different types. The seedling stage and the seedling stage electric motor can be easily replaced and repaired as a set. Assembly or maintenance workability of the seedling planting device can be improved.

  In addition, since the driving force can be transmitted from the plurality of planting claw electric motors to the planting claw without using a clutch, the operation of the planting claw can be controlled by on / off control of the plurality of planting claw electric motors. it can. Since a clutch structure for intermittently transmitting power to the planting claw is not required, the transmission structure is simplified.

  In addition, for example, by providing a manual switch, the planting claw can be easily operated in the reverse direction (retracting direction) by rotating the planting claw electric motor in the reverse direction. The seedlings can be easily removed from the planting nails, and maintenance can be improved. As a planting claw electric motor, a low-torque small motor can be adopted, so that the planting claw electric motor can be accommodated in a compact manner in the case where the planting claw is provided.

  Moreover, since the shifting between plants and the planting timing (planting phase) of the planting seedling can be set for each strip, the planting mode can be arbitrarily set for each strip. For example, staggered planting or one of adjacent strips can be densely planted and the other can be sparsely planted.

  According to a second aspect of the present invention, an electric motor for a seedling table for operating the seedling table in a lateral feed or vertical feed operation comprises an electric motor for horizontal feed and an electric motor for vertical feed, Since the seedling table is moved in the left-right direction by the electric motor for feeding and the seedling mat on the seedling table is moved in the removal direction by the electric motor for vertical feeding, the electric motor for horizontal feeding and the vertical feeding are configured. It is possible to synchronize the transverse electric operation and the vertical feeding operation with high accuracy by synchronizing with the electric motor. Further, for example, the vertical feed operation of the seedling stage can be configured without using an interlocking structure such as a cam, so the structure of the vertical feed operation is simplified.

  According to a third aspect of the present invention, an engine is mounted on the traveling machine body, a vehicle speed sensor that detects a moving speed of the traveling machine body is provided, and the plurality of planting nails are provided based on a detection result of the vehicle speed sensor. Since the electric motor or the seedling stage electric motor is configured to be controlled, the engine can be reduced in size and the traveling machine body can be reduced in weight. The planting claw electric motor or the seedling table electric motor can be actuated by following the change in the moving speed of the traveling machine body, thereby preventing a stockout or the like.

  According to a fourth aspect of the present invention, the planting claw electric motor or the seedling table electric motor is operated by using a generator driven by an engine mounted on the traveling machine body as a driving source. Therefore, the planting claw electric motor or the seedling table electric motor can be operated using the power generation output of the engine, and the planting claw electric motor or the seedling table electric motor is used as a drive source of the planting claw electric motor. The battery can be formed with a small capacity and can be configured at low cost.

It is a left view of a rice transplanter. It is a top view of a rice transplanter. It is a drive system figure of a traveling machine body. It is a drive system figure of a seedling planting device. It is an enlarged side view of a planting nail. It is a functional block diagram of the control means of a seedling planting apparatus. It is a flowchart of seedling planting control. It is planting locus explanatory drawing which drives a planting claw with an electric motor for planting claw. It is planting locus explanatory drawing which drives a planting claw with the conventional engine.

  Below, the rice transplanter which is embodiment of this invention is demonstrated using FIGS. In the following description, the left side in the forward direction of the rice transplanter (traveling machine body 1) is simply referred to as the left side, and the right side in the forward direction is also simply referred to as the right side. As shown in FIGS. 1 and 2, the rice transplanter has a traveling machine body 1 and a seedling planting device 2 connected to a rear portion of the traveling machine body 1 so as to be movable up and down. The traveling body 1 includes a pair of left and right front wheels 3, a pair of left and right rear wheels 4, a driver seat 5 on which a driver sits, a steering handle 6 disposed in front thereof, and a lower end side of the steering handle 6. A covering bonnet 7 is provided.

  On the lower end side of the steering handle 6 arranged at the center of the left and right width of the traveling machine body 1, a steering steering mechanism 8 for changing the direction of the front wheel 3 is arranged. Further, left and right spare seedling stands 9 on which a plurality of mat-like spare seedlings are placed in multiple stages are provided on the traveling body 1 on both the left and right sides of the bonnet 7. Behind the driver's seat 5 is provided a fertilizer application device 10 that buryes granular fertilizer in the mud on the side of the seedlings planted on the rice field.

  As shown in FIGS. 1 to 3, the traveling machine body 1 is provided with a vehicle body frame 12. An engine 21 is attached to the vehicle body frame 12 below the driver seat 5. A mission case 22 provided with a hydraulic continuously variable transmission or a transmission gear group is disposed in front of the engine 21. The engine 21 is disposed at a position along the longitudinal center line of the traveling machine body 1. That is, it is arranged at the center of the left and right width of the traveling machine body 1.

  As shown in FIG. 3, the engine 21 is disposed in a lateral posture in which the crank output shaft 23 extends in the left-right direction. A pulley 24 is attached to the left end of the crank output shaft 23, and the power of the engine 21 is transmitted to the transmission case 22 via a belt 25 wound around the pulley 24. An HST (hydrostatic continuously variable transmission) 26 is attached to the rear left side surface of the transmission case 22. Power from the engine 21 is transmitted to the input shaft 27 of the HST 26 by the belt 25 via the pulley 27a. The PTO shaft 22a protruding rearward from the mission case 22 is connected to a fertilization drive shaft 77 that operates the fertilizer applying apparatus 10. Power is transmitted to the fertilizer application device 10 through the PTO shaft 22a.

  As shown in FIG. 3, the generator 90 is connected to the crank output shaft 23 of the engine 21 via the input shaft 90a. The power generator 90 is used as a power source to operate a planting drive shaft actuator 100 and a lateral feed electric motor 101b or a vertical feed electric motor 101a, which will be described later.

  Left and right front axle cases 30 are attached to the left and right side surfaces of the front portion of the mission case 22. Left and right front wheels 3 are rotatably supported and steerable on left and right front wheel axles 31 provided on left and right front axle cases 30, respectively. A traveling drive shaft 32 extends rearward from the mission case 22. The driving force of the rear wheel 4 output from the transmission case 22 is transmitted to the inside of the rear axle case 33 via the traveling drive shaft 32.

  The rear axle case 33 is provided with a distribution shaft 91 connected to the traveling drive shaft 32 and left and right side clutches 93 for turning power transmission from the distribution shaft 91 to the left and right rear wheel axles 34 on and off. Left and right final gear mechanisms 95 that transmit the power of the distribution shaft 91 to the left and right rear wheel axles 34 are disposed on the left and right sides of the rear axle case 33. The left and right rear wheels 4 are driven by the output of the engine 21 via the left and right side clutches 93.

  Upper surfaces of the engine 21, the transmission case 22, and the like are covered with a vehicle body cover 37 on which an operator gets on. As shown in FIG. 2, a brake pedal 38 and an accelerator pedal 39 are arranged at the feet of the driver seat 5. Also, there are various levers (main transmission lever, accelerator lever, planting lift lever, etc.), switches (fastening switch 127, etc.), dials (between-stock setting device 124, A seedling setting device 125, a load setting device 128, and the like. The front panel (not shown) on the bonnet 7 is provided with a meter, a display, and the like.

  Side markers 71 that are rotatably supported by the planting machine 50 are provided on the left and right sides of the seedling planting device 2. The side marker 71 includes a marker ring body 72 for muscle pulling, and a marker arm 73 that pivotally supports the marker ring body 72 in a rotatable manner. The side marker 71 is configured to be movable between a working posture in which a trajectory serving as a reference in the next process is formed on the surface and a non-working posture in which the marker wheel body 72 is lifted to the ground.

  The seedling planting device 2 includes a planting claw mechanism 45 for four strips, a seedling mounting table 46 for four strips, and a float 47 for uniforming the surface installed on the lower surface side of the planting claw drive case 56. ing. The planting machine 50 includes a left and right planting frame 51 disposed on the lower front side of the seedling mount 46 and left and right side frames 52 erected from the left and right ends of the planting frame 51.

  As shown in FIG. 1, a hitch bracket 62 is connected to the center position of the right and left width of the planting frame 51 via a rolling fulcrum shaft (not shown). A hitch bracket 62 is connected to the rear side of the vehicle body frame 12 (the traveling machine body 1) via an elevating link mechanism 65 including a top link 63 and a lower link 64. A hydraulic lifting cylinder 66 attached to the vehicle body frame 12 is connected to the lower link 64. The seedling planting device 2 moves up and down through the lifting link mechanism 65 under the control of the lifting cylinder 66.

  As shown in FIG. 1 and FIG. 2, the seedling stage 46 is provided in a posture inclined front and rear and low, and the seedling stage 46 is placed on the planting frame 51 and the left and right side frames 52 of the planting machine 50. 46 is supported so as to be capable of reciprocating left and right. The seedling stage 46 includes a lateral feed mechanism 40 in the left-right direction along the upper guide rail 48 and the lower rail 49, and a vertical feed mechanism 41 that intermittently feeds the mat-like seedlings on the seedling stage 46 downward. ing.

  The planting claw mechanism 45 includes left and right planting claw drive cases 56 each having two strips of planting claws 57, two planting claw drive shafts 54 for operating the planting claws 57 separately, A crank arm body 55 provided with planting claws 57 is provided. The left and right planting claw drive cases 56 extending rearward from the left and right ends of the planting frame 51 are connected to the left and right ends of the planting frame 51 in a cantilever manner. The planting claw drive case 56 includes a planting claw drive shaft 54 extended in the front-rear direction and a planting claw drive rotating shaft 58 extended in the left-right direction. A planting claw drive rotating shaft 58 is connected to the planting claw drive shaft 54.

  As shown in FIG. 5, the proximal end side of the rotary arm 59 is coupled to the planting claw driving rotary shaft 58. The crank arm body 55 is connected to the crank arm body 55 via the tip end side of the rotary arm 59. A support piece 110 protrudes upward from the rear portion of the planting claw drive case 56, and the upper end side of the swing arm 112 is rotatably supported on the upper end side of the support piece 110 via the support shaft 111. Yes. The lower end side of the swing arm 112 is rotatably connected to the rear portion of the crank arm body 55. The rotating arm 59 is rotated by the rotation shaft 58 for planting claw driving, the swinging arm 112 is swung in the front-rear direction by the rotation of the rotating arm 59, and the planting claw 57 at the tip of the crank arm body 55 is mounted on the seedling. One seedling is scraped off from the seedling mat of the stand 46. At this time, the planting locus A at the tip of the planting claw 57 has a deformed oval shape in a side view.

  That is, when the seedling planting device 2 is at the landing position (working position), the planting claw 57 is rotated by one rotation of the planting claw driving rotary shaft 58 from the lower end side of the seedling mounting table 46 that is reciprocated to the left and right. 1 seedlings are taken out, and four seedlings are continuously planted by the four planting claws 57 on the field leveled by the float 47.

  Each planting claw drive case 56 of the planting machine 50 is provided with a planting claw electric motor 100 as an actuator for driving the planting claw drive shaft 54 separately. Two sets of planting claw drive shafts 54 and planting claw electric motors 100 are provided in each planting drive case 56. By the rotation of the planting claw electric motor 100, the planting claw driving rotary shaft 58 is rotated via the planting claw driving shaft 54 to operate the planting claw 57. Each planting claw electric motor 100 is provided with a rotation sensor 102 that detects the number of rotations of the planting claw electric motor 100.

  Next, the lateral feed mechanism 40 in the left-right direction of the seedling stage 46 will be described in the vertical feed mechanism 41 that intermittently conveys the seedling mat of the seedling stage 46 to the lower end side. As shown in FIGS. 1 and 4, the vertical feed mechanism 41 includes a vertical feed shaft 81 provided in front of the seedling stage 46. A transverse feed screw shaft 82 provided in front of the transverse feed mechanism 40 and the seedling mount 46 is provided. The vertical feed shaft 81 and the lateral feed screw shaft 82 constitute a seedling feed shaft body 79. The vertical feed shaft 81 and the horizontal feed screw shaft 82 are supported by the seedling frame 80. As the vertical feed mechanism 41, a driving side roller 84 extended in the left-right direction is provided at the lower end portion of the seedling table 46, and extended in the left-right direction at a substantially intermediate portion in the vertical direction of the seedling table 46. The driven roller 85 is provided. An endless belt-like vertical feed belt 86 is wound around the drive side roller 84 and the driven side roller 85, and the upper surface conveying side of the vertical feed belt 86 is exposed on the seedling placement surface side of the seedling placement stand 46 (FIG. 2).

  The longitudinal feed shaft 81 is provided with two longitudinal feed drive cams 87 spaced apart from each other on the left and right. The driving roller 84 is provided with a driven cam (not shown) that can contact the longitudinal feed driving cam 87. When the seedling stage 46 reaches the left and right reciprocating movement ends (return point of the reciprocating movement), the longitudinal feed driving cam 87 is brought into contact with a driven cam (not shown) provided on the driving side roller 84 and vertically The feed belt 86 is operated, and the seedling mat is conveyed to the lower end side of the seedling mount 46 by a predetermined pitch.

  A slider 83 connected to the seedling table 46 is slidably engaged with the lateral feed screw shaft 82. When the transverse feed screw shaft 82 rotates in one direction, the slider 83 reciprocates in the left-right direction along the transverse feed screw shaft 82, thereby reciprocating the seedling stage 46 in the left-right direction.

  The planting machine 50 is provided with a vertical feed electric motor 101a that rotates the vertical feed shaft 81 and a horizontal feed electric motor 101b that drives the horizontal feed screw shaft 82 to rotate. Yes. The longitudinal feed shaft 81 is rotated by the rotation of the longitudinal feed electric motor 101 a to operate the longitudinal feed mechanism 41. The transverse feed screw shaft 82 is rotated by the rotation of the transverse feed electric motor 101b to operate the transverse feed mechanism 40. The planting machine 50 is provided with a rotation sensor 103a for detecting the rotation speed of the vertical feed electric motor 101a and a rotation sensor 103b for detecting the rotation speed of the horizontal feed electric motor 101b.

  Next, automatic planting control of the rice transplanter will be described. FIG. 6 is a functional block diagram of the planting control means of the rice transplanter, and includes a seedling planting control controller 120 such as a microcomputer having a ROM storing a control program and a RAM storing various data. As shown in FIG. 6, on the input side of the seedling planting control controller 120, a descent sensor 122 that detects that the seedling planting device 2 has descended to a predetermined landing position and a ground moving speed of the traveling machine body 1 are detected. Vehicle speed sensor 123, inter-plant setting device 124 for initial setting between planted seedlings in a stepless manner, seedling setting device 125 for initial setting of the amount of seedlings to be planted (the number of plants to be planted), and change of planting number A load setting device 128 for initially setting an upper limit load value (load value for stopping rotation) of the planting claw electric motor 100, and a lateral feed amount (lateral feed position) of the seedling stage 46. A lateral feed sensor 104 to be detected, a planting switch 121 that detects the height of the seedling planting device 2 relative to the main unit and starts or stops the planting claw electric motor 100, and a planting claw electric motor 100 Manual switch that turns on and off manually 33 and are connected. Four sets of the line stop switch 127 and the manual switch 133 are provided in correspondence with each planting claw electric motor 100.

  As the vehicle speed sensor 123, an optical pickup sensor is used to detect the rotational speed of the rear wheel 4 to detect the ground moving speed of the traveling machine body 1. In this embodiment, as shown in FIG. 4, the vehicle speed sensor 123 detects the rotation of the final gear of the final gear mechanism 95 provided in the rear axle case 33, thereby detecting the ground moving speed of the traveling machine body 1. Further, the vehicle speed sensor 123 can detect the ground movement speed by detecting the number of rotations of the marker wheel 72 of the side marker 71.

  On the output side of the seedling planting control controller 120, a planting claw driver 130 that operates the planting claw electric motor 100, a vertical feed driver 131 that operates the vertical feed electric motor 101a, and a lateral feed electric motor. A lateral feed driver 132 that operates the motor 101b is connected. The seedling planting controller 120 includes a rotation sensor 102 that detects the rotation speed of the planting claw electric motor 100, a rotation sensor 103 a that detects the rotation speed of the vertical feed electric motor 101 a, and a lateral feed electric motor. The rotation sensor 103b which detects the rotation speed of the motor 101b is connected. Four sets of the planting claw electric motor 100, the planting claw driver 130, and the rotation sensor 102 are connected to the seedling planting control controller 120.

  As shown in FIG. 6, a planting claw driver 130, a longitudinal feed driver 131, and a lateral feed driver 132 are connected to a generator 90 driven by the engine 21, and the generator 90 is used as a power source. The planting claw electric motor 100 is configured to be operated via the driver 130 for use. The generator 90 is used as a power source, and the vertical feed electric motor 101 a is operated via the vertical feed driver 131. The generator 90 is used as a power source, and the transverse feed electric motor 101b is operated via the transverse feed driver 132.

  Next, planting automatic control for operating the planting claw electric motor 100 and the vertical feed electric motor 101a and the lateral feed electric motor 101b as the seedling table motor will be described with reference to the flowchart of FIG. To do. When the planting switch 121 is turned on, or the stapling switch 127 is turned off, or the lowering sensor 122 is turned on and the seedling planting device 2 is lowered to the predetermined landing position (S1: yes), it is recorded in the seedling planting control controller 120. The detected value of the vehicle speed sensor 123, the setting value of the seedling setting device 125, and the setting value of the inter-strain setting device 124 are read (S2). Based on the detected value and the set value, the rotation speeds of the planting claw electric motor 100, the vertical feed electric motor 101a, and the lateral feed electric motor 101b are calculated, and the planting claw electric motor 100 and vertical feed are calculated. The operation control of the electric motor 101a and the transverse electric motor 101b is automatically started (S3).

  The detection value of the rotation sensor 102 provided in each planting claw electric motor 100, the detection value of the rotation sensor 103a provided in the vertical feed electric motor 101a, and the detection of the rotation sensor 103b provided in the lateral feed electric motor 101b. The value and the detection value of the lateral feed sensor 104 are read (S4). Based on the detection values of the rotation sensors 103a and 103b and the lateral feed sensor 104, when the rotational speed of the lateral feed electric motor 101b or the vertical feed electric motor 101a is larger than the predetermined rotational speed (S5: yes), the lateral feed The electric motor 101b or the vertical feed electric motor 101a is corrected to decelerate (S6). When the rotational speed of the lateral feed electric motor 101b or the vertical feed electric motor 101a is smaller than the predetermined rotational speed (S7: yes), the lateral feed electric motor 101b or the vertical feed electric motor 101a is accelerated. (S8).

  Based on the detection value of the rotation sensor 102, when the rotation speed of the planting claw electric motor 100 is larger than the predetermined rotation speed (S9: yes), the rotation speed of the planting claw electric motor 100 is corrected to be reduced. (S10). When the rotation speed of the planting claw electric motor 100 is smaller than the predetermined rotation speed (S11: yes), correction is performed so as to increase the rotation speed of the planting claw electric motor 100 (S12). When the planting claw 57 hits a stone in the field, for example, and the planting claw electric motor 100 is operated with an overload (when the set value of the load setting device 128 is exceeded) (S13: yes), The planting claw electric motor 100 is stopped, and the planting claw 57 and the planting claw electric motor 100 are prevented from malfunctioning.

  Thus, the traveling vehicle body 1 is corrected by correcting the lateral feed electric motor 101b and the vertical feed electric motor 101a for operating the seedling stage 46 to a predetermined rotational speed based on the detection result of the vehicle speed sensor 123. The seedling mat on the seedling table 46 can be stably supplied to the planting claws 57 even if the ground movement speed of the planting ground changes. Further, by correcting the planting claw electric motor 100 that operates the planting claw 57 to a predetermined rotational speed based on the detection results of the lateral feed sensor 104 and the vehicle speed sensor 123, the ground moving speed of the traveling machine body 1 is corrected. Even if changes, seedlings of the seedling mat on the seedling mount 46 can be stably planted in the field scene by the planting claws 57. As a result, the horizontal feed electric motor 101b, the vertical feed electric motor 101a, and the planting claw electric motor 100 that operates the planting claw 57 are synchronized, so that the seedling stage 46b and the planting claw 57 can be easily made. Can be operated.

  In addition, since the lateral feed operation and the vertical feed operation of the seedling stage 46 are executed by separately provided motors (the lateral feed electric motor 101b and the vertical feed electric motor 101a), the lateral movement of the seedling stage 46 is performed. A conventional cam mechanism that interlocks the feed operation and the longitudinal feed operation becomes unnecessary. For example, if the vertical feed electric motor 101a is built in or placed close to the driving roller 84 of the seedling stage 46, the vertical feed mechanism 41 of the seedling stage 46 can be configured in a compact structure.

  Further, for example, when the planting claw electric motor 100 is provided for each planting claw driving case 56, the planting claw driving case 56 (2 planting claws 57) is planted. The claw electric motor 100 can be arbitrarily controlled to rotate. However, the planting claw 57 cannot be operated arbitrarily for each planting line. As described above, when the planting claw electric motor 100 is provided for each planting claw 57, the planting claw electric motor 100 of each planting claw 57 can be rotationally controlled separately. Therefore, for example, it is possible to change the setting between the planted seedlings for each line, or to shift the planting timing so that the planted seedlings are staggered on the left and right lines. Furthermore, when a problem such as seedling clogging occurs in the seedling planting device 2, by manually operating the manual switch 133, only one of the four sets of planting claw electric motors 100 (the problem is The planting claw electric motor 100) that operates the planting claw 57 that has been generated can be selected and rotated in reverse or forward. As a result, even if the planting claws 57 are bitten into the seedling mat, the seedlings can be easily removed from the planting claws 57, and the maintainability can be improved.

  In addition, since the setting value of the inter-plant setting device 124 is arbitrarily initialized and the planting claw electric motor 100 is controlled, the planting trajectory of the planting claw 57 is changed to a dense planting mode, a standard planting mode, or a sparse planting mode. Easy to set. 8 and 9 are diagrams showing the planting trajectory of the planting claw 57, and FIG. 8 is a planting trajectory in which the planting claw 57 is operated by the planting claw electric motor 100 of the above embodiment. FIG. 9 is a planting locus in which the planting claw 57 is operated via a gear or the like by the power from the conventional engine.

  In the mode of planting work, for example, a mode of “standard planting” in which the number of planted plants per 3.3 square meters is 50 to 60 plants, and the number of plants is larger than “standard planting”. There are a mode of “dense planting” and a mode of “sparse planting” in which the number of strains is smaller than that of “standard planting”. Conventionally, at the time of “sparse planting”, the seedlings planted by the planting claws 57 tend to fall forward. On the other hand, at the time of “dense planting”, the seedlings planted by the planting claws 57 tend to fall back.

  In the above embodiment, when the planting claw electric motor 100 is accelerated or decelerated near the bottom dead center of the planting trajectory A in the planting claw 57 to make it “sparse planting”, the seedlings are moved forward. The fall can be reduced. In the case of “dense planting”, it is possible to reduce the seedling falling to the rear side. The planting locus of the planting claw 57 can be set arbitrarily. It is possible to easily change between seedling stocks, and to perform seedling planting work in a desired mode.

  As shown in FIGS. 4 and 6, behind the traveling machine body 1 having the front wheel 3 and the rear wheel 4, a seedling platform 46 and a plurality of planting claw units (planting claw 57, planting claw driving rotary shaft). 58), each planting claw unit is provided with a plurality of planting claws 57, and a plurality of planting claws 57 are driven separately. Since the claw electric motor 100 and the seedling table electric motor for moving the seedling table 46 laterally or vertically are provided, the seedling table 46 and the seedling table electric motor are configured as one set. It is possible to easily construct a multi-row planted seedling planting device with different specifications. The seedling stage 46 and the seedling stage electric motor can be easily replaced and repaired as a set. Assembly or maintenance workability of the seedling planting device can be improved.

  Further, since the driving force can be transmitted from the plurality of planting claw electric motors 100 to the planting claw 57 without using a clutch, the planting claw 57 is controlled by on / off control of the plurality of planting claw electric motors 100. Can be turned on and off. Since a clutch structure for interrupting power transmission to the planting claw 57 is not required, the transmission structure is simplified. Further, for example, by providing the manual switch 133, the planting claw 57 can be easily operated in the reverse direction (retracting direction) by rotating the planting claw electric motor 100 in the reverse direction. Even if the claw 57 is bitten, the seedling can be easily removed from the planting claw 57, and the maintainability can be improved. Since the low-torque small motor can be adopted as the planting claw electric motor 100, the planting claw electric motor 100 can be accommodated in a compact manner in the case where the planting claw 57 is provided.

  Moreover, since the shifting between plants and the planting timing (planting phase) of the planting seedling can be set for each strip, the planting mode can be arbitrarily set for each strip. For example, staggered planting or one of adjacent strips can be densely planted and the other can be sparsely planted.

  As shown in FIGS. 4 and 6, the seedling table electric motor 100 that causes the seedling table 46 to perform a lateral feed or a vertical feed operation includes a lateral feed electric motor 101b and a vertical feed electric motor 101b. Since the seedling table 46 is moved in the left-right direction by the electric motor 101b for feeding and the seedling mat on the seedling table 46 is moved in the removal direction by the electric motor 101b for vertical feeding, the electric motor 101b for horizontal feeding is configured. And the vertical feed electric motor 101b can be synchronized to link the horizontal feed operation and the vertical feed operation with high accuracy. Further, for example, the vertical feed operation of the seedling stage 46 can be configured without using an interlocking structure such as a cam, so that the structure of the vertical feed operation is simplified.

  As shown in FIG.4 and FIG.6, it is provided with the vehicle speed sensor 123 which detects the moving speed of the traveling body 1, and is the planting claw electric motor 100 or the seedling table electric motor based on the detection result of the vehicle speed sensor 123. Since the longitudinal feed electric motor 101a and the lateral feed electric motor 101b are configured to be controlled, the engine 21 can be reduced in size and the traveling machine body 1 can be reduced in weight. The planting claw electric motor 100, the vertical feed electric motor 101a, or the horizontal feed electric motor 101b can be operated in accordance with a change in the moving speed of the traveling machine body 21, and a stock removal or the like can be prevented.

  As shown in FIGS. 3, 4, and 6, using a generator 90 driven by the engine 21 mounted on the traveling machine body 1 as a drive source, the planting claw electric motor 100 or the seedling table electric motor is a longitudinal feed. Since the electric motor 101a and the transverse electric motor 101b are operated, the planting claw electric motor 100 or the seedling table electric motor 101 is operated using the power generation output of the engine 21. In addition, a battery as a drive source for the planting claw electric motor 100, the vertical feed electric motor 101a, or the lateral feed electric motor 101b can be formed with a small capacity, and can be configured at low cost.

1 Rice transplanter (running aircraft)
2 Seedling planting device 3 Front wheel 4 Rear wheel 46 Seedling stage 54 Transmission shaft 57 Planting claw 100 Planting claw electric motor 101a Vertical feed shaft electric motor (seedling stage electric motor)
101b Electric motor for lateral feed screw shaft (electric motor for seedling stage)

Claims (4)

In a rice transplanter equipped with a seedling planting device having a seedling stand and a plurality of planting claw units behind a traveling machine body having front wheels and rear wheels,
Each planting claw unit includes a plurality of planting claws, and has the same number of planting claw electric motors as the plurality of planting claws, and a seedling table electric motor that operates the seedling platform in a lateral or vertical feed operation. A rice transplanter characterized in that a motor is provided and each planting claw is driven separately by the respective planting claw electric motor.   An electric motor for a seedling table for operating the seedling table in a lateral feed or a vertical feed operation includes a lateral feed electric motor and a vertical feed electric motor, and the lateral feed electric motor moves the seedling stand in a horizontal direction. 2. The rice transplanter according to claim 1, wherein the rice transplanter is configured to be moved and to move a seedling mat on the seedling placing table in a take-out direction by an electric motor for vertical feeding.   A vehicle speed sensor for detecting a moving speed of the traveling machine body is provided, and the plurality of planting claw electric motors or the seedling table electric motor is controlled based on a detection result of the vehicle speed sensor. The rice transplanter according to claim 1.   The power generator driven by an engine mounted on the traveling machine body is used as a driving source to operate the planting claw electric motor or the seedling table electric motor. Rice transplanter.

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