JP2010051214A - Direct sowing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a direct sowing machine that does not make a soil-covering plate automatically act and lightly carries out a sowing operation when iron coated seed rice is sown. <P>SOLUTION: The direct sowing machine includes an identification sensor 6 for identifying whether seed rice fed from a seed rice hopper is iron-coated seed rice or not and a controller 4 for changing the soil-covering plate 59 from action to no action. When the identification sensor 6 identifies that the seed rice is iron-coated seed rice, the controller 4 controls the soil-covering plate 59 to be changed to no action. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique suitable for sowing iron-coated seed pods with a direct sowing machine for directly sowing seed pods in a field.

The direct sowing machine, for example, as described in JP-A-2008-22721, intermittently feeds out seeded rice that has been transported and guided from a seeding tank provided on a traveling vehicle body with a seeding roll for seeding, In sowing, it is sowed in a sowing groove formed in the field and covered with a soil covering board.
JP 2008-22721 A

  The seed pods used in the direct sowing machine are coated with a calper agent and other germination rooting agents to improve germination and rooting. Also, iron-coated seed pods coated with iron powder are used to increase the specific gravity of the seed pods so that the seed pods sown in the field do not float and move due to irrigation. With this iron-coated seed potato, there is no need for soil covering work to bury the seed potato in the soil, and when the work is carried out without the cover plate acting, running can be done lightly. When sowing seeds separately, it is troublesome to attach and detach the seeding grooving device and the cover plate depending on the seeds.

  Therefore, in the present invention, when sowing the iron coating seed culm, it is an object to enable the sowing operation to be performed lightly so that the cover plate does not act automatically.

The problems of the present invention are solved by the following technical means.
According to the first aspect of the present invention, the identification sensor 6 for identifying whether the seed sow fed from the seed sow hopper 48 is an iron coating seed soot and the control device 4 for switching the cover plate 59 between the action and the pulling action are provided. When the iron coating seeds were discriminated, the control device 4 was controlled so as to switch the cover plate 59 to the non-actuated state to constitute a direct seeder.

  With this configuration, when sowing the iron-coated seed culm, the cover plate 59 does not act, so the seeding operation can be performed lightly.

  In the invention according to claim 1, when seeding by properly using the calper agent-coated seed potato or the iron-coated seed potato, in the case of the iron-coated seed potato, the covering plate 59 is not automatically used and there is no need for switching. The sowing traveling is also light because the cover plate 59 does not act. Moreover, by making the covering soil board 59 into a non-operation state, the amount of covering soil can be decreased and the germination rate of a seed potato can be improved.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a left side view of a riding type direct sowing machine with a fertilizer application device. In this riding type direct sowing machine, a direct sowing device 47 is moved up and down via a lifting link device 3 on the rear side of a traveling vehicle body 2. The main body portion of the fertilizer application device 5 is provided on the rear upper side of the traveling vehicle body 2.

  The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and rear wheels 11 and 11 as drive wheels, and a transmission case 12 is disposed in the front part of the airframe. Front wheel final cases 13 and 13 are provided on the left and right sides of the front wheel, and the front wheels 10 and 10 are attached to a front wheel axle that protrudes outward from a front wheel support portion that can be turned of the front wheel final case 13. Further, the front end of the main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel rolling shaft 18a (see FIG. 3) provided horizontally at the front and rear of the rear end of the main frame 15 is used as a fulcrum. The rear wheel gear cases 18 and 18 are supported in a freely rolling manner, and the rear wheels 11 and 11 are attached to the rear wheel axle that protrudes outward from the rear wheel gear cases 18 and 18.

  The engine 20 as a prime mover is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 through the first belt transmission device 21 and the second belt transmission device 23. The rotational power transmitted to the transmission case 12 is shifted by a transmission in the transmission case 12, and then separated into traveling power and external extraction power. A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external take-out power is transmitted to a clutch case 25 provided at the rear portion of the traveling vehicle body 2, and is transmitted to the fertilizer application device 5 by the fertilizer transmission mechanism 28.

  FIG. 9 shows a part of the fertilization transmission mechanism 28, crank arms 87 and 87 are attached to a fertilization drive shaft 86 that is rotationally driven by the clutch case 25, and is pivotally supported by a crank pin 89 at the distal ends of the crank arms 87 and 87. The crank rod 88 reciprocates and drives the fertilizer application device 5.

  The fertilizer applicator 5 feeds the fertilizer stored in the fertilizer storage tank 60 by a certain amount by the fertilizer feed sections 61,..., And the fertilizer is fed by the fertilizer hose 62,. To the fertilizer guides 63 (see FIG. 7) attached to both the left and right sides of the fertilizer, and in the vicinity of the side of the sowing line by the soaking groover 64 provided on the front side of the fertilizer guide 63,. It is designed to be discharged into the formed fertilizer. As shown in FIG. 10, an air chamber 69 is provided at the bottom of the fertilizer storage tank 60, and warm air sucked from around the engine muffler 92 by a blower 90 driven by a motor (not shown) is laterally moved from the suction duct 91. The fertilizer is warmed and dried by blowing it into a long air chamber 69 and further blown into the fertilizer hose 62,..., And the fertilizer in the fertilizer hose 62,. It is designed to be transported.

  A desiccant such as a polymer absorbent is sealed in the suction duct 91 to remove moisture from the warm air so that drying of the fertilizer is promoted. Further, as shown in FIG. 11, the fertilizer can also be dried by providing a metal filter 93 at the bottom of the fertilizer storage tank 60 and extending the heat transfer wire 94 connected to the metal filter 93 into the air chamber 69 to heat the metal filter 93. I do.

  The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A bonnet 32 incorporating various operation mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheels 10, 10 is provided above the bonnet 32. The engine cover 30 and the bonnet 32 have horizontal floor steps 35 on the left and right sides of the lower end. The rear portion of the floor step 35 is a rear step 36 that also serves as a rear wheel fender.

  The elevating link device 3 has a parallel link configuration, and includes one upper link 40 and a pair of left and right lower links 41, 41. The upper link 40 and the lower links 41, 41 are rotatably attached to a rear-view portal-shaped link base frame 42 whose base side is erected at the rear end of the main frame 15, and a vertical link 43 at the front end side thereof. Are connected. An elevating hydraulic cylinder 46 is provided between the support member fixed to the main frame 15 and the tip of the swing arm 45 formed integrally with the upper link 40, and the elevating hydraulic cylinder 46 is expanded and contracted by hydraulic pressure. The upper link 40 rotates up and down, and the direct seeding device 47 moves up and down while maintaining a substantially constant posture.

  A center float 55 and side floats 56 and 56 are provided at the lower part of the direct seeding device 47. When the aircraft is advanced with the center float 55 and the side floats 56, 56 in contact with the mud surface of the field, the center float 55 and the side floats 56, 56 slide while leveling the mud surface. Seeds are sown by the direct sowing device 47. The center float 55 and the side floats 56 and 56 are rotatably attached so that the front end side moves up and down according to the unevenness of the soil surface of the field, and the vertical movement of the front part of the center float 55 is an angle-of-attack sensor during direct sowing work. The sowing depth of the soot seeds is always kept constant by switching the hydraulic valve that controls the lifting hydraulic cylinder 46 according to the detection result to raise and lower the direct sowing device 47.

FIG. 2 is a rear view of the main part of the leveling rotor support structure of the direct seeding device 47 of FIG. 1, and FIG. 3 is a plan view of the main part of the leveling rotor 27, the center float 55, and the side floats 56 and 56.
The leveling rotor support structure includes a beam member 66 whose upper ends are rotatably supported by both side members of a rectangular support frame 65 (FIG. 1) including left and right support rods and both side members extending in the vertical direction. A support arm 67 fixed to both ends of the beam member 66 and a rotor support frame 68 rotatably attached to the support arm 67 are provided. A side rotor drive shaft 70a of the leveling side rotor 27a is attached to the lower end of the rotor support frame 68.

  As shown in FIG. 3, the center rotor 27 b in front of the center float 55 is disposed in front of the side rotor 27 a in front of the side float 56 due to the arrangement position of the center float 55 and the side floats 56 and 56. Yes. Therefore, the power of the side rotor 27a to the side rotor drive shaft 70a is transmitted via the leveling transmission device 72 (FIG. 1) in the gear case 18 of the rear wheel 11, and the center rotor drive shaft 70b of the center rotor 27b is connected to both sides. Power is transmitted from a pair of chains (not shown) in a pair of left and right chain cases 73 to which power is transmitted from the ends of the side rotor drive shafts 70a and 70a of the rotors 27a and 27a on the inner side of the vehicle body.

In addition, there is a shift belt conveyor operating motor 14 in the leveling transmission 72, and the rotational speed of the leveling side rotors 27a and 27a can be changed according to the vehicle speed.
Since the center rotor driving shaft 70b of the center rotor 27b is only supported through a pair of left and right chain cases 73, 73, a reinforcement that bridges the pair of left and right chain cases 73, 73 to reinforce the chain cases 73, 73. A member 74 is provided.

  Further, the center rotor 27 b is suspended by a pair of first link member 76 and second link member 77 whose upper ends are supported by the beam member 66 via a spring 78. The first link member 76 and the second link member 77 have a first link member 76 whose one end is fixedly supported by the beam member 66 and a second link member whose one end is rotatably connected to the other end of the first link 76. The spring 78 is connected between the other end portion of the second link member 77 and a mounting piece 74a rotatably supported by the reinforcing member 74.

  A bent piece 82 is fixed to the motor shaft of the rotor lifting / lowering motor 44 attached to the support frame 65. When the motor shaft of the rotor lifting / lowering motor 44 is controlled to rotate in the left-right direction of the vehicle, the protruding portion 66a fixedly supported by the beam member 66 rotatably supported by both side members of the support frame 65. The bent piece 82 is rotated up and down in the vicinity. Since the bent piece 82 is locked below the protrusion 66a, the protrusion 66a is turned upward by rotating the motor shaft of the rotor lifting / lowering motor 44 in the right direction of the body (in the direction of arrow S in FIG. 2). It rotates about the beam member 66 as a center. By the rotation of the projecting portion 66a, the end of the first link member 76 opposite to the connecting portion with the beam member 66 is also rotated upward about the beam member 66. By rotating the first link member 76 upward, the center rotor 27 b can be raised upward via the second link member 77 and the spring 78. When the center rotor 27b is moved upward, the side rotor 27a is also simultaneously moved upward via the center rotor drive shaft 70b and the side rotor drive shaft 70a.

  In this embodiment, the side rotors 27a and 27b at a standard position of the motor shaft of the rotor lifting / lowering motor 44 at a height of 40 mm from the field scene can be rotated up to 15 mm from the standard position by turning in the direction of arrow S in FIG. It is set so that it can be lowered by up to 15 mm from the standard position by turning in the direction opposite to the arrow S direction in FIG.

  The direct sowing machine of the present embodiment is a direct sowing machine of a riding four-wheel drive type, and the direct sowing apparatus 47 is usually mounted on the rear part of the tractor as a working machine as shown in FIG. The direct seeding device 47 is connected to the rear side of the main frame 15 via the lift link device 3 that can be lifted and lowered. The central portion of the direct seeding device 47 is connected to the vertical link 43 at the rear end of the parallel links 40 and 41 so as to be rotatable around a rolling shaft (not shown).

  The direct sowing device 47 includes a feeding roll 49 for feeding seeds from the upper seed hopper 48, a feeding cylinder 51 for feeding and guiding seeds, and a seed seeding rotor 52 for discharging the seeds fed and guided from the feeding cylinder 51 downward. It consists of a discharge cylinder 53 and the like. A center float 55 and side floats 56, 56 that are suspended below the sowing frame 58 and are grounded and slid on the soil surface are disposed below the direct sowing device 47. Seeding cylinders 54 are provided on the left and right sides of each center float 55 and side floats 56, 56, and seed pods and fertilizers that are released downwards, except for the lower ends of the discharge cylinders 53 and the feeding cylinders 51 on the upper side. Is guided to the soil surface leveled by the center float 55 and the side floats 56, 56.

  It should be noted that a pair of sowing grooves 64 and a pair of cover plates 59 for filling the field grooves made by the sowing grooves 64 are provided on both sides of the center float 55 and the side floats 56, 56.

  FIG. 4 shows a cylindrical feeding roll 49 portion of the feeding portion of the direct seeding device 47. On the outer periphery of the feeding roll 49, feeding holes 50 are formed at eight equal positions, and a predetermined amount of seed hopper is received in the upper seed hopper 48. The feeding roll 49 has its outer peripheral surface approaching the hopper wall at a position where the rotational direction A is directed from below into the seed hopper 48, and approaches or rubs the scraper brush 79 and the guide plate 80 at a position exiting from the seed hopper 48. Accordingly, with the rotation of the feeding roll 49, a predetermined number of seeds accumulated in the feeding hole 50 in the seed hopper 48 are discharged on the lower side.

  In the seed hopper 48 on the feeding roll 49, an identification sensor 6 comprising a color discrimination sensor for discriminating the iron coating seed soot with the color of the seed soot is provided. The iron-coated seeds are brown and the calper agent-coated seeds are white and can be identified. The identification sensor 6 may be a weight identification sensor that discriminates an iron coating seed having a high specific gravity with a certain amount of seed.

  Further, in the feeding cylinder 51, a seed soot feeding sensor 7 for detecting the feeding of the iron coating seed soot by a magnetic change is provided, so that an alarm is sounded when the feeding amount decreases or disappears, and a soot feeding abnormality is displayed on the operation panel.

  5 and 6 show another embodiment of the feeding roll 49. FIG. The side wall 37 after the rotation of the feeding hole 50 of the feeding roll 49 is made movable in the rotational direction and is urged forward in the rotational direction, and the rear side wall 37 is moved in the radial direction by centrifugal force by the rotation. The weight 39 and the wire 38 are connected, and when the rotation of the feeding roll 49 becomes faster, the side wall 37 is moved backward after the rotation to weaken the seed output. When the feeding roll 49 of this embodiment is used, the seed drop dropping position does not change even if the rotation speed changes.

  FIG. 7 shows a schematic plan view of the center float 55 and the side floats 56 and 56, and shows a mechanism diagram of the operating member of the cover plate 59 provided on the center float 55 and the side floats 56 and 56.

  The pair of arms 75 and 75 are swung via the wire 71 by turning on and off the cover plate operating motor 9 controlled by the control device 4 to swing the cover plate 59 at the tip of the arm in the arrow B direction. As will be described below, the seed cover sowed in the groove formed by the sowing groover 64 can be covered by swinging the cover plate 59.

  That is, when the cover plate operating motor 9 is moved from cut to on, the bases of the pair of arms 75 and 75 are pulled through the wire 71, and via a torque spring (not shown) provided at the tip of each arm 75. The cover plate 59 connected at a predetermined angle swings.

  Information on whether the seed pod is an iron-coated seed potato is input to the control device 4 from the identification sensor 6. If the seed pod is an iron-coated seed potato, the seed potato may be lifted or preyed by a bird without being covered with the seed potato. Since there is not, the operation command is given by the cover plate operating motor 9 to hold the cover plate 59 in the pulling action position. Further, the control device 4 outputs a control signal for driving / stopping the feeding roll 49 and the rotation speed to the seed feeding motor 8.

FIG. 8 is a control block diagram showing control signal input / output to / from the control device 4 that automatically controls the raising / lowering of the direct seeding device 47.
The input signal is an on / off signal for operating the sowing end from the sowing end switch 16 provided near the handle 34, the tilt angle signal from the front / rear tilt angle sensor 17 provided on the traveling vehicle body 2, and the rear wheel 11 A rotational speed signal from the rear wheel rotational speed sensor 19 for detecting the rotational speed, a position signal of the direct sowing device 47 with respect to the traveling vehicle body 2 from the lifting link sensor 22 provided in the lifting link device 3, and an angle-of-attack sensor 24 provided in the center float 55. 2 is an on / off signal for operating the feeding roll 49 from the planting switch 26.

  The output signals are an expansion / contraction command signal to the sowing part raising / lowering electromagnetic valve 29 for controlling the extension / contraction of the elevating hydraulic cylinder 46 and a driving signal of the feeding roll 49 to the sowing clutch motor 85. Further, it is a lift drive signal for the leveling rotor 27 (side rotor 27a and center rotor 27b) to the rotor lift motor 44. Further, it is a drive signal to a shift actuator 83 that rotates an on-axis to a tiger that performs a shift of a hydraulic continuously variable transmission attached to the mission case 12.

  When the seeding end switch 16 is turned on, the control of the control device 4 controls the rotor lifting / lowering motor 44 to raise the leveling rotor 27, makes the hydraulic control sensitivity of the direct seeding device 47 by the angle-of-attack sensor 24 sensitive, and the speed change actuator Control 83 is performed to decelerate the hydraulic continuously variable transmission.

It is a right view of a riding type direct seeding machine. It is a partially expanded rear view of a riding type direct seeding machine. It is a partially expanded plan view of a riding type direct seeding machine. It is a sectional side view of a soot feeding roll. It is a sectional side view of the soot feeding roll of another Example. It is a partially expanded sectional view of the soot feeding roll of another Example. It is an operation | movement linkage diagram of a earth covering board. It is a control block diagram. It is a top view of the fertilizer applicator drive part which shows another Example. It is a perspective view of the fertilizer drying part in a fertilizer application equipment. It is a perspective view of the fertilizer drying part in the fertilizer application which shows another example.

Explanation of symbols

4 Control device 6 Identification sensor 48 Seed hopper 59 Covering board

Claims (1)

There is provided an identification sensor (6) for identifying whether the seed seed fed from the seed seed hopper (48) is an iron-coated seed seed, and a control device (4) for switching the cover plate (59) between action and pulling action. ), The control device (4) controls to switch the cover (59) to the non-actuated when the iron coating seed is determined.

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