JP5072014B2 - Seeding machine - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a seeder equipped with a seeding device for spotting seeds and a spraying device for spraying granular materials such as fertilizers and chemicals in the vicinity of the spotting position, and in particular, spraying an accurate amount of granular materials near the seeds. The present invention relates to a granular material feeding control configuration. Note that the seed may be a plant tissue such as a stem, a root, or a culture, or a seed analog in which the plant tissue or seed is enclosed in an aqueous gel or the like.

Conventionally, in addition to the sowing device, a spraying device that spreads granular materials such as fertilizers and drugs is installed in the sowing machine, and at the same time as the sowing operation by the sowing device, the spraying operation to spray the granular material in the vicinity of the seeds is performed in parallel. Thus, a technique for improving work efficiency is known (for example, see Patent Document 1).
JP 2004-298030 A

  However, the seeds fed from the seed feeding unit of the seeding device and the granular materials such as fertilizer and chemicals fed from the granular material feeding unit of the spraying device are not necessarily configured to fall to the field at the same timing. In particular, if the structure of the transport path to the field is complicated, or if slippage of the transport path surface deteriorates due to long-term use, the fall timing to the field will be greatly shifted between the seed and the granular material. In such a case, there is a problem that the granular material is sprayed at a position separated from the seed in the front-rear direction, and the insecticidal effect and growth promoting effect of the granular material cannot be sufficiently exhibited. In addition, this problem can be dealt with by continuously feeding out the granular material and always spraying the granular material in the vicinity of the seeds. In addition, there was a problem that excessive dust dispersion was not preferable from the viewpoint of preventing environmental pollution.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
In claim 1, in a seeder equipped with a seeding device for spot seeding and a spraying device for spraying granular material, an activation signal transmitting means for transmitting an activation signal for starting spraying by the spraying device in accordance with spot seeding, By providing a stop signal transmitting means for transmitting a stop signal for stopping spraying by the spraying device, and a feeding control means for controlling the driving of the granular material feeding part of the spraying device based on the start signal and the stop signal. The sowing can be synchronized with the spraying of the granular material, and when the spraying is stopped, the conveying unit for transferring the granular material in the granular material feeding unit can receive a predetermined amount of the granular material until the next spraying start. The start-up signal transmission means is provided in the seeding device .
In the seeding machine according to claim 1, in the seeder according to claim 1, the start signal transmitting means includes a start marker provided in an interlocking portion with the seeding device, and a start sensor that detects the start marker and transmits a start signal. It has .
According to a third aspect of the present invention, in the seeder according to the second aspect, the activation signal transmission means detects the seed conveyed through the seed conveyance path of the seeding device and transmits the activation signal .
In Claim 4, In the seeder of Claim 1, the granular material supply part of the said spreading | diffusion apparatus has a feeding rotary body which formed the feeding recessed part in the outer periphery as a conveyance part, and the feeding recessed part which is feeding out a granular material Is a feeding control configuration that automatically stops when it reaches the vicinity of the lowermost end of the feeding rotating body .
5. The seeder according to claim 1, wherein the stop signal transmitting means detects a stop marker provided at an interlocking portion with the spraying device, and a stop sensor that detects the stop marker and transmits a stop signal. It has .

Since this invention was comprised as mentioned above, there exists an effect shown below.
In claim 1, in a seeder equipped with a seeding device for spot seeding and a spraying device for spraying granular material, an activation signal transmitting means for transmitting an activation signal for starting spraying by the spraying device in accordance with spot seeding, By providing a stop signal transmitting means for transmitting a stop signal for stopping spraying by the spraying device, and a feeding control means for controlling the driving of the granular material feeding part of the spraying device based on the start signal and the stop signal. The sowing can be synchronized with the spraying of the granular material, and when the spraying is stopped, the conveying unit for transferring the granular material in the granular material feeding unit can receive a predetermined amount of the granular material until the next spraying start. So that the seeds fed from the seed feeding unit of the seeding device fall into the field, and the fertilizers and chemicals delivered from the granular material feeding unit of the spraying device. It is possible to adjust the timing of the fall of the object to the field, and it is possible to spread the granular material in the vicinity of the seed sowing position by substantially matching the timing. Not only can this be achieved, but the cost can be reduced by minimizing the amount of granular material used. In addition, even if the granular material is difficult to drop and load into the transport unit due to its size, shape, etc., the transport unit is stopped at the standby position for a sufficient period of time to reliably load a predetermined amount of granular material into the transport unit Since the amount of granular material delivered to each spot sowing position can be made constant, the granular material is insufficient and the growth promoting effect or insecticidal effect cannot be fully exhibited. It is possible to prevent the seed growth from being excessively inhibited.
In addition , since the start signal transmitting means is provided in the seeding device, the start signal can be transmitted by directly detecting the timing of the seeding within the seeding device, and the parts necessary for transmitting the start signal can be provided at one place. Collectively, the start signal transmission means can be made compact, and the seeder 3 can be downsized and the structure thereof can be simplified.
In claim 2, wherein the activation signal transmitting means includes a start marker which is provided in conjunction portion between the seeding device, because it has a start sensor that transmits an activation signal by detecting the activation marker, separate special equipment It is possible to transmit a start signal with a simple configuration without using any of the above, and it is possible to reduce the manufacturing cost by reducing the number of parts, and to improve the assemblability and maintainability.
In claim 3, wherein the activation signal transmitting means, so transmits the activation signal by detecting the seeds conveyed seed transport path of the seeding device, the activation signal of the actual seed motion directly detected by Even if seeds are clogged during delivery or transportation, or even if dust adheres to the surface of the transportation route and the seed transportation speed decreases, the seed falling timing is accurately transmitted to the control means. Further, it is possible to further improve the dispersion accuracy of the granular material.
In Claim 4 , the granular material supply part of the said spreading | diffusion apparatus has a feeding rotary body which formed the feeding recessed part in the outer periphery as a conveyance part, and the feeding recessed part which is feeding a granular material is the lower end vicinity of a feeding rotary body When the spraying is stopped, the feeding recess is always facing directly downward, and all the particulate matter loaded at the standby position is dropped by its own weight so that the particulate matter in the feeding recess remains. It can be eliminated, and a simple control configuration can reliably feed out an accurate amount of granular material from below, simplifying the parts and structure required for the spraying device, reducing the production cost of the seeder and improving maintainability. Improvements can be made.
In Claim 5 , since the said stop signal transmission means has the stop marker provided in the interlocking | linkage site | part with a spraying apparatus, and the stop sensor which detects this stop marker and transmits a stop signal, a special apparatus is separately provided. A stop signal can be transmitted with a simple configuration without using it, and the manufacturing cost can be reduced by reducing the number of parts, and the assemblability and maintainability can be improved.

  Next, embodiments of the invention will be described. 1 is a perspective view of a state in which a seeder according to the present invention is mounted on the rear part of a tractor, FIG. 2 is a side view of a seeding unit, FIG. 3 is also a rear view, and FIG. 5 is a partial cross-sectional side view of the fertilizer feeding device, FIG. 6 is a partial rear cross-sectional view of the periphery of the stop signal transmitting device, FIG. 7 is a block diagram showing a feeding control mechanism, and FIG. 8 shows a motor start / stop procedure. FIG. 9 is a time chart, FIG. 9 is an explanatory diagram showing the relationship between the rotation of the motor and the rotation of the feeding roll, and FIG. 10 is a side sectional view of the seed feeding device showing another form of the start signal transmission device. In the present embodiment, the seed feeding device of the seeding device is described using a pan-type feeding mechanism, and the spraying device is described using a fertilizing device, but is not particularly limited thereto. .

  First, the overall configuration of the seeder 3 according to the present invention will be described with reference to FIG. A work tiller 1 provided at the rear part of the tractor 1 is mounted with a rotary tiller 2 so as to be movable up and down, and a seeder 3 according to the present invention is attached to the rear part of the depth frame 4 of the rotary tiller 2. The seeder 3 is composed of a plurality of seeding units 14, which are three units in this embodiment, and each seeding unit 14 is configured to be removable in units of one line.

  In the sowing unit 14, a fertilizing device 8 supported by the depth frame 4 is disposed above the front part, and below the fertilizing device 8, the sowing device 10, the grooving device 11, and the covering soil. The disk 12 is disposed so as to be swingable up and down. Of these, the fertilizer and seeds can be supplied from the fertilizer application device 8 and the seeding device 10 between the disks constituting the grooving device 11. A pressure-reducing roller 13 is laid horizontally so as to be movable.

  Next, the detailed configuration of the sowing unit 14 will be described with reference to FIGS. A hitch unit 70 that adjusts the height and angle is attached to the center of the left and right sides of the rear part of the depth frame 4, and a tool bar 18 is installed horizontally at the rear part of the hitch unit 70. It is connected.

  A locking tool 48 is detachably locked to the tool bar 18, and a front surface of a fertilizer feeding device 63 of the fertilizer application device 8 is fastened and fixed to the back surface of the locking tool 48. The fertilizer hopper 64 is provided, and the lower part of the fertilizer feeding device 63 is communicated with the upper part of the fertilizer pipe 66 provided in the fertilizer disk pair 31 of the groover 11 via the intermediate pipe 65. The fertilizer delivered from the fertilizer feeding device 63 is dropped into the fertilizer groove formed by the fertilizer disk pair 31.

  A drive shaft 83 is provided in parallel behind the toolbar 18 and the left end of the drive shaft 83 is connected to a motor output shaft 91b from the motor body 91a in the feeding control motor 91 according to the present invention. Thus, when power is supplied from a feeding control controller 92, which will be described later, and the motor 91 is operated, the motor output shaft 91b is rotated and the drive shaft 83 is rotationally driven, so that the feeding power can be transmitted to the fertilizer feeding device 63. I am doing so.

  In the present embodiment, a motor 91 is provided for each sowing unit 14, and the amount of fertilizer and the fall timing are changed for each line, and sprayed only on a specific line, or the spraying distance interval is changed. However, by connecting the drive shafts 83 of the adjacent sowing units 14 so that all the sowing units 14 can be driven by a single motor, the number of parts can be reduced. Further, the manufacturing cost of the seeder 3 may be reduced and the maintainability may be improved.

  Further, a U-shaped fixture 49 in a plan view is fitted and fixed to the lower surface of the locking device 48, and front sides of the connecting arms 50 and 51 arranged in parallel vertically on both sides of the fixture 49. The front portion of the connecting arm 50/51 is pivotally connected to the rear portion of the connecting arm 50/51. A rear mounting frame 24 is fixed to the rear portion of the front mounting frame 23, a seed feeding device 67 of the seeding device 10 is fixed to the upper portion of the rear mounting frame 24, and an upper portion of the seed feeding device 67 is further provided. Is provided with a seed hopper 68. On the other hand, the lower part of the seed feeding device 67 communicates with the upper part of the sowing pipe 69, and seeds sent from the seed feeding device 67 are formed by the sowing groove 29 formed by the sowing disk pair 29 on the left side of the fertilizing disk pair 31. To fall inside.

  A front portion of a roller support frame 72 having an A-shape in plan view is fixed to the rear portion of the rear mounting frame 24, and the rear portion of the roller support frame 72 branches left and right to freely rotate the roller shaft 13b. And a roller 13a is externally fixed to the roller shaft 13b. A transmission case 73 is interposed between the side portion of the roller 13 a and the side portion of the rear mounting frame 24, and the sprocket 101 provided at the front portion in the transmission case 73 is driven by the seed feeding device 67. A shaft 80 is fixed, and a chain 81 is wound between the sprocket 101 and the sprocket 100 fixed to the roller shaft 13b.

  Thereby, when the roller 13a of the pressure reducing roller 13 rotates as the seeding machine 3 advances, the sprocket 100 fixed to the roller shaft 13b is rotated, and the sprocket is passed through the chain 81 in the transmission case 73. The drive shaft 80 fixed to 101 is rotated so that the feeding power can be transmitted from the pressure reducing roller 13 to the seed feeding device 67.

  Next, each feeding device will be described with reference to FIGS. 2 and 4 to 6. As shown in FIG. 2 and FIG. 4, the feeding mechanism of the seed feeding device 67 is a dish type, and a disc-shaped dish 15 having two conveying holes 15a and 15b opened on the opposite side 180 degrees in plan view. Can be rotated along a rotational surface slightly inclined downward and rearward. As a result, when the seed 16 falling into the lower first transport hole 15a is rotationally transported in the direction of the arrow 119 from the rotational position 115a below the seed hopper 68 to the rotational position 115b immediately above the discharge port 52. Then, after falling into the discharge port 52, it falls to the field via the sowing pipe 69, and can be reliably fed out and sown without damaging the seed 16 during transport to the discharge port 52. . Further, a bevel gear 103 is fixed to the lower end of the rotary shaft 33 with the eye plate 15 fixed to the upper end, and the bevel gear 103 is engaged with the bevel gear 102 fixed to the inner end of the drive shaft 80. The feeding power from the pressure reducing roller 13 is transmitted from the drive shaft 80 to the rotary shaft 33 via the bevel gears 102 and 103 to rotate the eye plate 15.

  As shown in FIGS. 2, 5, and 6, in the fertilizer feeding device 63, the drive shaft 83 is formed in a polygonal shape in cross-section, and the rotation shaft 53 is fitted on the drive shaft 83. The feeding roll 32 is fitted and fixed to the rotating shaft 53, and two feeding recesses 32a and 32b for dropping the fertilizer from the fertilizer hopper 64 are provided 180 on the outer periphery of the feeding roll 32 in a side view. It is formed on the opposite side. The feeding roll 32, the rotating shaft 53, and the like are fitted into the feeding case 54, and the rotating shaft 53 is pivotally supported from both the left and right sides by a side cover (not shown). A brush 55 is fixed to the upper rear portion of the feeding case 54 by a knob screw 56, the tip of the brush 55 is brought into contact with the outer periphery of the feeding roll 32, and a guide funnel 58 is fixed to the lower end of the feeding case 54. The discharge port 59 communicated with the lower portion of the guide funnel 58 is communicated with the intermediate pipe 65. Further, from the front upper part of the feeding case 54, a sponge 57 projects rearward and obliquely downward toward the feeding roll 32, and the tip of the sponge 57 is in contact with the outer periphery of the feeding roll 32.

  In such a configuration, when the feeding roll 32 is rotated by the drive shaft 83, the feeding recesses 32a and 32b are rotated from the position facing the upper fertilizer hopper 64 toward the lower guide funnel 58. The fertilizer dropped into and loaded into the feeding recess 32a or the feeding recess 32b is conveyed downward and fed out. At this time, the fertilizer that protrudes from the feeding recesses 32a and 32b is scraped off by the brush 55 so that excess fertilizer is not fed out, and the fertilizer in the fertilizer hopper 64 is removed from the outer periphery of the feeding roll 32 by the sponge 57. In addition, it is prevented from accidentally dropping downward from the gap between the front case 54 and the inner wall of the feeding case 54. The fall prevention member may be an elastic body such as a rubber piece other than sponge, or a composite member provided with an elastic body only at the contact portion with the outer periphery of the feeding roll 32. The outer periphery of the feeding roll 32 and the feeding case There is no particular limitation as long as a large gap is not formed between the front inner wall and the rotation of the feeding roll 32.

  Next, the configuration of the feeding control mechanism 90 that controls the fall timing of the particulate matter such as fertilizer and medicines fed out in this manner to the field will be described with reference to FIGS. As shown in FIG. 7, the feeding control mechanism 90 is connected to a motor switch 93 for selecting the motor 91 of the seeding unit 14 to be used and each motor 91 via a wiring 104, and controls the start / stop of the motor 91. A controller 92 that synchronizes the fall timing of the seed 16 and the fall timing of the fertilizer, an adjustment switch 95 that performs fine adjustment of synchronization control by the controller 92, and an activation signal transmission that transmits an activation signal 107 to the controller 92 through the wiring 105 A device 109, a stop signal transmission device 110 that similarly transmits a stop signal 108 to the controller 92 through the wiring 106, a battery 112 that supplies driving power to the controller 92 and the motor 91 through the wiring 111 and the wiring 104, and the like. Has been.

  As shown in FIGS. 2, 4, and 7, the activation signal transmission device 109 is provided on the drive shaft 80 of the seed feeding device 67 and extends outward from the transmission case 73. An activation marker 113 fixed to the extending end of the drive shaft 80 and rotating together with the drive shaft 80 and an activation sensor 114 fixed to the side surface of the transmission case 73 are configured. The sensor includes a light emitting unit 114a and a light receiving unit 114b. On the other hand, the activation marker 113 includes a boss portion 113b that is externally fitted and fixed to the drive shaft 80, and a single blocking portion 113a that protrudes in the radial direction from the boss portion 113b. It passes between the portion 114a and the light receiving portion 114b.

  Then, when the seeding machine 3 moves and the pressure reducing roller 13 rotates, the activation marker 113 on the drive shaft 80 also rotates together to block light passing between the light emitting unit 114a and the light receiving unit 114b. The start switch 114 c in the start sensor 114 is “ON”, and the start signal 107 is transmitted to the controller 92. Further, when the activation marker 113 is rotated and separated from the light emitting unit 114a and the light receiving unit 114b, the activation switch 114c is turned off, and the transmission of the activation signal 107 is interrupted.

  In this embodiment, when the pressure reducing roller 13 makes one rotation, the feeding power is transmitted to the drive shaft 80 via the sprocket 100, the chain 81, and the sprocket 101, and the activation marker 113 and the bevel gear 102 on the drive shaft 80 are connected. At the same time, the bevel gear 103 meshing with the bevel gear 102 is rotated halfway, and the first transport hole 15a of the pan 15 connected to the bevel gear 103 by the rotation shaft 33 is moved from the rotation position 115a to the rotation position 115b. It is configured to rotate. Here, the activation marker 113 and the first conveyance hole 15a are synchronized so that the timing at which the first conveyance hole 15a reaches the rotation position 115b and the timing at which the activation marker 113 arrives at the activation sensor 114 are synchronized. The position is adjusted in advance.

  In such a configuration, when the seeding machine 3 moves by a certain distance (hereinafter referred to as “spotting interval”), in this embodiment, by a distance corresponding to the outer peripheral length of the pressure reducing roller 13, the pressure reducing roller 13, the sprocket 100, The distance plate mechanism 15 formed by the chain 81, the sprocket 101, and the like rotates the eye plate 15 in the direction of the arrow 119, and the seed 16 in the first transport hole 15a reaches the rotation position 115b. Then, the seed 16 passes through the lower discharge port 52 and the sowing pipe 69 and falls to the field as described above. At the same time, the activation marker 113 reaches the activation sensor 114 and the activation signal 107 is transmitted.

  As a result, the start marker 107 provided in the sowing apparatus 10 and the start marker 113 for starting the drive of the fertilizer feeding apparatus 63 in accordance with the timing at which the seed 16 is fed from the seed feeding apparatus 67 and spotted. Only by the rear activation sensor 114, it is possible to accurately transmit the seeder 3 every time the seed sowing machine moves. In this embodiment, there is one blocking portion 113a of the activation marker 113 and the gear ratio between the bevel gear 102 and the bevel gear 103 is 0.5. However, the number and interval of the blocking portions 113a, the bevel gears 102 and 103, and the like. By changing the gear ratio, the seeding operation can be performed at various spotting intervals.

  That is, the activation signal transmission device 109 serving as the activation signal transmission means detects the activation marker 113 provided on the drive shaft 80 that is a part linked to the seeding device 10, and transmits the activation signal 107 by detecting the activation marker 113. Since it has the start sensor 114, it is possible to transmit a start signal with a simple configuration without using a separate special device, and it is possible to reduce the manufacturing cost by reducing the number of parts, and to improve the assemblability and maintainability. it can.

  Furthermore, since the start signal transmitting device 109 is provided in the seeding device 10, the start signal 107 can be transmitted by directly detecting the timing of the sowing in the seeding device 10, and the components necessary for transmitting the start signal 107 Thus, the start signal transmitting means can be made compact, and the seeder 3 can be downsized and the structure can be simplified.

  The seeder 3 includes a distance interlocking mechanism 116 capable of feeding seeds 16 from a seed feeding device 67 which is a seed feeding unit of the seeding device 10 when the seeder 3 moves a predetermined distance. It can be kept at a predetermined distance after being changed, and seeds can be grown in an environment suitable for root growth or the like according to the plant variety.

  In the present embodiment, the interlocking portion where the activation marker 113 is provided is the drive shaft 80, but any portion that moves in conjunction with the feeding operation of the seeding device 10 may be used. For example, the pressure reducing roller 13 and the roller shaft 13b. The eye plate 15 may be a grounding ring provided separately. Further, in addition to providing such an activation marker 113 at the interlocking portion, the movement distance of the seeder 3 may be measured and the activation signal 107 may be transmitted based on the measurement result. For example, the rotary encoder may be a pressure reducing roller. 13 or attached to a shaft such as a measuring rotator for measuring the moving distance, and the moving distance is measured, or a screw is formed on the driving shaft of the tractor 1 and moved from the rotational speed of the driving shaft obtained by a sensor engaged with the screw. The distance may be measured or may be measured, and the configuration for measuring the moving distance of the seeder 3 is not limited as long as it can accurately set the spot sowing interval. Moreover, you may make it attach the starting signal transmission device 109 of a present Example to the said measurement rotary body.

  In particular, when the activation marker 113 is attached to the interlocking portion as in this embodiment, or when the rotary encoder is attached to the pressure reducing roller 13, a large design change can be made only by changing the attaching interlocking portion or changing the setting of the rotary encoder. Without changing, it is possible to easily change the sowing interval.

  As shown in FIGS. 3 and 5 to 7, the stop signal transmission device 110 is provided in each motor 91 as described above, and the motor output shaft 91 b from the motor 91 is connected to the motor output shaft 91 b via a joint 94. The stop marker 117 is fixed on the drive shaft 83 connected to the drive shaft 83 and rotates together with the drive shaft 83, and a stop sensor 118 fixed to the side surface of the feeding case 54. Similar to the activation sensor 114, it is a transmissive photosensor and includes a light emitting unit 118a and a light receiving unit 118b. On the other hand, the stop marker 117 includes a boss portion 117c that is externally fitted and fixed to the drive shaft 83, and two blocking portions 117a and 117b that protrude 180 degrees opposite to the boss portion 117c in the radial direction. The blocking portions 117a and 117b pass between the light emitting portion 118a and the light receiving portion 118b.

  In such a configuration, when the motor 91 is driven by the controller 92 that has received the start signal 107, the motor output shaft 91b rotates and the stop marker 117 on the drive shaft 83 connected to the motor output shaft 91b. Also rotate together. When one of the blocking portions 117a and 117b of the stop marker 117 blocks the light that has been passing between the light emitting portion 118a and the light receiving portion 118b, the stop switch 118c in the stop sensor 118 is turned on. “On” and transmission of the stop signal 108 to the controller 92 is started. The “on” state of the stop switch 118c is continuously maintained until the controller 92 receives the next activation signal 107 again.

  Thereby, the stop signal 108 for stopping the driving of the fertilizer feeding device 63 can be accurately transmitted every time the motor output shaft 91b of the motor 91 makes a half rotation. That is, the stop signal transmitting device 110 serving as the stop signal transmitting means detects the stop marker 117 provided on the drive shaft 83 that is an interlocking portion of the fertilizer application device 8 serving as a spraying device, and detects the stop marker 117 to detect the stop signal 108. Therefore, it is possible to transmit a stop signal with a simple configuration without using a special device, reducing the manufacturing cost by reducing the number of parts, and improving the assemblability and maintainability. Can be planned. In this embodiment, a transmission type photosensor is applied to both the start signal transmission device 109 and the stop signal transmission device 110. However, the movement of the seeding machine 3 and the driving of the fertilizer feeding device 63 can be performed with high accuracy. Any sensor can be used as long as it can be detected at high speed, and is not particularly limited. Of course, the types of stop markers and stop sensors are changed according to the type of sensor.

  Next, the operation of the feeding control mechanism 90 as described above will be described with reference to FIGS. As shown in FIGS. 4, 7, and 8, when the seeder 3 attached to the tractor 1 moves, the pressure reducing roller 13 rotates while pressing the soil, and the driving is performed in synchronization with the rotation of the pressure reducing roller 13. The shaft 80 also rotates. Then, the eye plate 15 rotates, and the seed 16 in the first transport hole 15a reaches the rotation position 115b from the rotation position 115a. At the same time, in the activation signal transmission device 109, the activation marker 113 is a light emitting unit 114a and a light receiving unit 114b. , The activation switch 114c is turned on, and the activation signal 107 is transmitted (time T1). Then, the controller 92 that has received the activation signal 107 supplies power to each motor 91 via the wiring 104, and starts to rotate the motor 91 that has been stopped until that time (time t1). That is, at the timing when the seed 16 starts dropping from the first transport hole 15a through the lower discharge port 52 and the sowing pipe 69 to the field, the motor 91 starts to operate and the fertilizer is fed from the fertilizer feeding device 63. It is started.

  Here, as shown in FIGS. 5 to 9, in the stop signal transmission device 110, the rotational position 120 a of the first blocking portion 117 a of the stop marker 117 is set in advance at the position where the stop sensor 118 is disposed, The mounting position of the stop marker 117 on the drive shaft 83 is adjusted so that the rotational position 120a and the uppermost end position 121a of the first feeding recess 32a of the feeding roll 32 correspond accurately. Then, when the first blocking portion 117a rotates from the rotation position 120a (time t1) to the rotation position 120c through the rotation position 120b (time t2), the first feeding recess 32a is also moved to the uppermost position. The fertilizer that rotates from 121a (time t1) through the rotation position 121b (time t2) to the lowermost position 121c and drops and is loaded in the first feeding recess 32a at the uppermost position 121a is used as the first feeding recess. It is made to fall little by little from the end of 32a, and when it reaches the lowest end position 121c, discharge of all the fertilizer in the 1st feeding recess 32a is completed.

  When the first blocking portion 117a rotates to the rotation position 120c, the second blocking portion 117b provided on the opposite side to the first blocking portion 117a reaches the rotation position 120a and the light emitting portion The light that has been passing between 118a and the light receiving unit 118b is blocked. Then, the stop switch 118c becomes “ON” and transmission of the stop signal 108 to the controller 92 is started (time TS1), and the controller 92 that receives the stop signal 108 interrupts the power supply via the wiring 104. Each motor 91 is stopped (time t3). As described above, the stop state is continued until the controller 92 receives the next start signal 107, during which the stop marker 117 has the first blocking unit 117a directly below and the second blocking unit 117b directly above. Similarly, the feeding roll 32 is held with the first feeding recess 32a directly below and the second feeding recess 32b facing directly above. The fertilizer in the fertilizer hopper 64 falls into the second feeding recess 32b and is loaded into every corner while waiting in the above-described state (time t3 to time t4).

  Further, when the seeding machine 3 moves by the interval of the sowing, the drive shaft 80 rotates in synchronization with the rotation of the pressure reducing roller 13, and when the first transport hole 15a returns from the rotation position 115b to the rotation position 115a, conversely, The seed 16 in the second conveyance hole 15b opposite to the first conveyance hole 15a reaches the rotation position 115b from the rotation position 115a. At the same time, in the activation signal transmitting device 109, the blocking unit 113a passes between the light emitting unit 114a and the light receiving unit 114b, the activation switch 114c is turned on, and the activation signal 107 is transmitted again (time T2). ). Then, the controller 92 that has received the activation signal 107 supplies power to each motor 91 via the wiring 104 and resumes rotation (time t4).

  Then, in the stop signal transmission device 110, the stop marker 117 and the feeding roll 32 that have been in a stopped state until then start to rotate again. The first blocking portion 117a of the stop marker 117 rotates from the rotation position 120c (time t4) to the rotation position 120a through the rotation position 120d (time t5). The feeding recess 32b rotates from the uppermost position 121a (time t4) to the lowermost position 121c through the rotation position 121b (time t5), and the fertilizer dropped and loaded at the uppermost position 121a As in the case of the feeding recess 32a, it is gradually dropped from the end of the second feeding recess 32b, and when it reaches the lowermost position 121c, the discharge of all the fertilizer in the second feeding recess 32b is completed. Yes. The first feeding recess 32a rotates from the lowermost position 121c (time t4) to the uppermost position 121a through the rotation position 121d (time t5).

  When the first blocking unit 117a rotates to the rotation position 120a, the light that has been passing between the light emitting unit 118a and the light receiving unit 118b is blocked again, and the stop switch 118c is turned “ON” to the controller 92. The transmission of the stop signal 108 is started (time TS2). Receiving the stop signal 108, the controller 92 interrupts the power supply via the wiring 104 and stops each motor 91 again (time t6). The stop state is also continued until the controller 92 receives the next activation signal 107, during which the stop marker 117 keeps the first blocking unit 117a directly above and the second blocking unit 117b directly below. The feeding roll 32 is returned to and maintained in an initial state with the first feeding recess 32a facing directly above and the second feeding recess 32b facing just below. Then, the fertilizer in the fertilizer hopper 64 falls into the first feeding recess 32a and is loaded in every corner while waiting in such a manner as facing directly upward.

  By repeating the above feeding process, seed 16 sowing and application of fertilizer, medicine, etc. can be performed substantially synchronously at the spot sowing position, and a predetermined granular material is fed out of the feeding recesses 32a and 32b. The one automatically stops at the lowest end position 121c and is held for a while. In addition, the fine adjustment of the synchronous control between the fall timing of the seed 16 to the field and the fall timing of the fertilizer and the medicine to the field is the time until the motor 91 is actually started after the start signal 107 is received. By changing the corresponding time lag 75 from time T1 to time t1 and from time T2 to time t4 with the adjustment switch 95, or by changing the rotational speed of the motor 91, the drop path length of the seed 16 and fertilizer / medicine, etc. It can be carried out.

  That is, in the sowing machine 3 provided with the sowing apparatus 10 for spot seeding and the fertilizer application apparatus 8 that is a spraying apparatus for spraying fertilizers and medicines that are granular materials, starting to start spraying by the fertilizer application 8 in accordance with the spot sowing An activation signal transmission device 109 which is an activation signal transmission means for transmitting the signal 107; a stop signal transmission device 110 which is a stop signal transmission means for transmitting a stop signal 108 for stopping spraying by the fertilizer application device 8; By providing a controller 92 which is a feeding control means for controlling the driving of the fertilizer feeding device 63 which is a granular material feeding portion of the fertilizer application device 8 based on the stop signal 108, the seed sowing of the seeds 16 and the fertilizer application can be synchronized. In addition, when spraying is stopped, the feeding recesses 32a and 32b, which are transport units for transferring fertilizer by the fertilizer feeding device 63, are set at the next spraying start time. Then, since it has a feeding control configuration that holds the predetermined amount of fertilizer at the uppermost position 121a that is a standby position that can accept the fertilizer, the seed 16 fed from the seed feeding device 67 of the seeding device 10 falls to the field, It is possible to adjust the timing of the fertilizer and medicine dropped from the fertilizer feeding device 63 and the like of the fertilizer applicator 8 to the field, and the fertilizer and medicine etc. are sprayed in the vicinity of the seed sowing position of the seed 16 by substantially matching the timing. In addition to the effects of promoting the growth and the insecticidal effect of fertilizers and chemicals, etc., it is possible to reduce the cost by minimizing the fertilizers and chemicals used. In addition, even when fertilizers, medicines, etc. are difficult to drop and load into the feeding recesses 32a and 32b due to their size, shape, etc., the feeding recesses 32a and 32b are stopped for a sufficient time at the uppermost end position 121a which is the standby position. Thus, a predetermined amount of fertilizer, medicine, etc. can be reliably loaded into the feeding recesses 32a, 32b, and the amount of fertilizer, medicine, etc. delivered to each spot sowing position can be made constant. It is possible to prevent the growth promotion effect and insecticidal effect from being insufficient due to shortage, and conversely, the growth of the seed 16 is inhibited due to an excessive amount of fertilizer, chemicals or the like.

  Further, the fertilizer feeding device 63 which is the granular material feeding unit has a feeding roll 32 which is a feeding rotary body having feeding recesses 32a and 32b formed on the outer periphery as a conveying unit, and feeds fertilizer out of the feeding recesses 32a and 32b. Since the middle one has a feeding control configuration that automatically stops when it reaches the lowermost position 121c set near the lowermost end of the feeding roll 32, when the spraying is stopped, the feeding recess during feeding of the fertilizer always faces directly below. The fertilizer, medicine, etc. loaded at the uppermost end position 121a, which is the standby position, can be dropped by their own weight to eliminate the remaining fertilizer, medicine, etc. in the feeding recesses 32a, 32b, and a simple control configuration Therefore, it is possible to reliably deliver an accurate amount of fertilizer, medicine, etc. from below, so that the parts and structure necessary for the fertilizer feeding device 63, which is a spraying device, can be simplified. Can be reduced and improvement of maintainability of the forming costs.

  Next, another embodiment of the activation signal transmitter will be described with reference to FIG. In this embodiment, unlike the activation signal transmitting device 109, the seeding device 10 directly detects the seed 16 being transferred, and there are a contact type and a non-contact type. Among them, the contact-type activation signal transmission device 122 is installed on the lower inner wall surface of the discharge port 52 where the seed 16 falling from the transport holes 15a and 15b opened in the eye plate 15 first collides violently. A sensor unit 122a such as a pressure sensor or an acceleration sensor capable of detecting the impact force of the seed 16 to be detected, and an activation switch 122b for transmitting an electrical signal generated by the collision of the seed 16 to the controller 92 as an activation signal 107. Thus, the movement of the seed 16 can be detected by contact.

  The non-contact type activation signal transmission device 122 is externally fitted and installed in the vicinity of the exit immediately before the seed 16 falls to the field by the sowing pipe 69, and the seed 16 blocks the light so that the seed 16 is blocked. A light emitting unit 123a and a light receiving unit 123b constituting a transmission type photosensor capable of detecting passage, and an activation switch 123c that transmits an electrical signal generated by blocking light by the seed 16 to the controller 92 as an activation signal 107. Therefore, the movement of the seed 16 can be detected without contact.

  The installation positions of the activation signal transmitters 122 and 123 and the types of sensors described above are not particularly limited to the present embodiment as long as they can reliably detect the seeds 16 being conveyed. In addition, normally one is sufficient, but in order to prevent detection omission, a plurality may be provided as in this embodiment, and the number of attachments is not limited.

  Thereby, the seed 16 can be directly detected in the middle of feeding and conveyance. That is, the activation signal transmission devices 122 and 123 as the activation signal transmission means detect the seed 16 conveyed through the seed conveyance path of the seeding device 10 and transmit the activation signal 107, so that the actual movement of the seed 16 is detected. The activation signal 107 can be transmitted by direct detection. Even if the seed 16 is clogged during feeding or transportation, or even if dust or the like adheres to the surface of the transportation path and the transportation speed of the seed 16 decreases, the seeds The falling timing of 16 can be accurately transmitted to the control means, and the spraying accuracy of granular materials such as drugs and fertilizers can be further improved.

  INDUSTRIAL APPLICABILITY The present invention can be applied to all seeders equipped with a seeding device for spot seeding and a spraying device for spraying granular materials such as drugs and fertilizers.

It is a perspective view in the state where a seeder concerning the present invention was installed in the rear part of a tractor. It is a side view of a sowing unit. It is a back view similarly. It is a plane partial sectional view of a seed feeding device. It is side surface partial sectional drawing of a fertilizer feeding apparatus. It is a back surface partial cross section figure of a stop signal transmitter periphery. It is a block diagram which shows a delivery control mechanism. It is a time chart which shows the starting / stopping procedure of a motor. It is explanatory drawing which shows the relationship between rotation of a motor and rotation of a delivery roll. It is a side surface fragmentary sectional view of the seed feeding apparatus which shows the starting signal transmission device of another form.

DESCRIPTION OF SYMBOLS 3 Seeding machine 8 Spreading device 10 Seeding device 16 Seed 32 Feeding rotary body 32a * 32b Conveying part, Feeding recessed part 63 Granular material feeding part 80 * 83 Interlocking part 92 Feeding control means 107 Start signal 108 Stop signal 109 * 122 * 123 Start signal Transmission means 110 Stop signal transmission means 113 Start marker 114 Start sensor 117 Stop marker 118 Stop sensor 121a Standby position 121c Near the bottom end

Claims (5)

In a seeder equipped with a seeding device for spot seeding and a spraying device for spraying granular material, start signal transmitting means for transmitting a start signal for starting spraying by the spraying device in accordance with spot seeding, and spraying by the spraying device are stopped A stop signal transmitting means for transmitting a stop signal to be transmitted; and a feeding control means for controlling the driving of the granular material feeding portion of the spraying apparatus based on the start signal and the stop signal, so And a feeding control configuration for holding the conveying unit that transfers the granular material in the granular material feeding unit at a standby position where a predetermined amount of granular material can be received until the next spraying time when the spraying is stopped And the said starting signal transmission means is provided in a seeding apparatus, The seeder characterized by the above-mentioned . 2. The seeding machine according to claim 1, wherein the activation signal transmitting means includes an activation marker provided at an interlocking portion with the seeding device, and an activation sensor that detects the activation marker and transmits an activation signal. And sowing machine. 3. The seeder according to claim 2, wherein the start signal transmitting means detects the seed transported through the seed transport path of the seeding device and transmits the start signal . The seeding machine according to claim 1, wherein the granular material feeding portion of the spraying device has a feeding rotary body having a feeding concave portion formed on the outer periphery as a conveying portion, and the feeding concave portion that is feeding the granular material is a feeding rotary body. A seeder having a feeding control configuration that automatically stops when reaching the vicinity of the lowermost end . 2. The seeder according to claim 1, wherein the stop signal transmission means includes a stop marker provided at an interlocking portion with the spraying device, and a stop sensor that detects the stop marker and transmits a stop signal. And sowing machine.

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