JP2007089595A - Rice transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice transplanter capable of maintaining the blast pressure of plural fertilizer outlets 38 for multiple ridges constant, wherein the fertilizer transporting blast structure and the like are easily formable. <P>SOLUTION: The rice transplanter has, on a travelling vehicle 1, a planting part 15 having seedling stand 16 and a fertilizer distributor 36 having plural fertilizer sending out parts 38 for multiple ridges and is composed to transfer a fertilizer from the fertilizer sending out part 38 to the planting part 15 through a transporting hose 40 by blast of a blower 41, wherein the rice transplanter has right and left air ducts 42 for blowing air from a blower 41 to the fertilizer distributer 36, right and left blow nozzles 87 are formed by dividing a exhaust duct part 83a extended from a blowing fun case 83 for the blast of the blower 41 and right and left air ducts 42 are each connected to the right and left blow nozzles 87. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a rice transplanter that performs a seedling planting operation continuously with a seedling stage and a planting claw and applies fertilizer to the side of a planting strip. The present invention relates to a rice transplanter that transports fertilizer from a fertilizer feed unit to a planting unit via a plurality of transport hoses.

  Conventionally, in general, a rice transplanter equipped with a planting unit and a fertilizer applicator on a traveling vehicle conveys fertilizer in the fertilizer hopper of the fertilizer applicator by blowing air from the air supply pipe of the blower during seedling planting work, While planting seedlings with the planting claws of the planting part, it is configured to fertilize the side of the planting strip.

In this case, in the conventional rice transplanter, the air feed pipe is arranged in the left and right longitudinal direction below the fertilizer feed section, and the air feed pipe and a plurality of fertilizer feed sections for multiple strips are connected, and the air A blower is attached to one side end of the feed pipe (see Patent Document 1). In addition, a technique for blowing air from a blower through a plurality of air ducts to a plurality of fertilizer feeding portions arranged in a line in the left-right width direction of the traveling vehicle is also known (see Patent Document 2).
JP-A-7-321940 JP-A-61-111617

  The prior art uses a large-diameter air feed pipe, uses the same number of air feed pipes as a plurality of fertilizer feed sections, or increases the air flow rate of the blower, thereby providing a plurality of fertilizer feed sections for multiple strips. It is necessary to equalize the air blowing pressure, and there is a problem that the air blowing structure for conveying fertilizer cannot be easily configured.

  An object of the present invention is to provide a rice transplanter capable of easily configuring a blower structure and the like for conveying fertilizer while being able to uniformly maintain the blowing pressure of a plurality of fertilizer feeding sections for multiple strips. Is.

  In order to achieve the above object, the rice transplanter of the invention according to claim 1 includes a planting part having a seedling stage for multi-row planting and a plurality of planting claws, and a plurality of fertilizer feeding parts for multi-strip fertilization. A plurality of fertilizer feeding hoses for multi-strip fertilization from the plurality of fertilizer feed portions arranged in a line in the left-right width direction of the traveling vehicle by air blown by a blower In the rice transplanter configured to convey fertilizer via the air blower, the left and right air ducts for blowing air from the blower to the fertilizer are provided, and the exhaust duct portion extended from the fan case for blowing the blower is branched to the left and right By doing so, left and right air vents are formed in the exhaust duct portion, and the left and right air ducts are connected to the left and right air vents, respectively.

  According to a second aspect of the present invention, in the rice transplanter according to the first aspect, the exhaust duct portion is disposed in front of the fertilizer applicator at a substantially central position of the lateral width of the traveling vehicle, One end side of each of the left and right air ducts is connected to the exhaust duct portion through the left and right air blowing ports at a substantially central position of the left and right widths.

  According to a third aspect of the present invention, in the rice transplanter according to the first aspect, the pair of left and right air ducts are extended in a symmetrical manner in a substantially straight line in the left-right direction of the traveling vehicle, and the lateral width of the traveling vehicle is increased. The one end side of each of the left and right air ducts is connected to the pair of left and right air outlets at a substantially central position.

  According to the invention which concerns on Claim 1, the planting part which has a seedling stand for multi-row planting and a plurality of planting claws, and a fertilizer machine which has a plurality of fertilizer supply parts for multi-strip fertilization are in a traveling vehicle. The fertilizer is transported from the plurality of fertilizer feed sections arranged in a line in the left-right width direction of the traveling vehicle to the planting section through the plurality of transport hoses for multi-row fertilization by being blown by the blower. In the rice transplanter configured as described above, the exhaust duct portion includes left and right air ducts for blowing air from the blower to the fertilizer, and the exhaust duct portion extended from the fan case for blowing air of the blower is branched to the left and right. The left and right air vents are formed in the left and right air vents, and the left and right air ducts are connected to the left and right air ducts. Therefore, all the fertilizer is fed from the blower disposed on one side of the fertilizer applicator through one air duct. Fan Compared with the conventional structure, the blowing pressure of the plurality of fertilizer and feed unit for a multi-strip can be uniformly maintained. Also, the air duct for conveying fertilizer, etc., compared to the conventional structure in which air is blown from the blower to the plurality of fertilizer feeding sections for multi-row fertilization through the same number of air ducts as the plurality of fertilizer feeding sections for multi-row fertilization The air blowing structure can be easily configured.

  According to the second aspect of the present invention, the exhaust duct portion is disposed in front of the fertilizer applicator at a substantially central position in the left-right width of the traveling vehicle, and at the substantially central position in the lateral width of the traveling vehicle, Since one end side of the left and right air ducts is connected to the exhaust duct part via the left and right air blowing ports, the plurality of fertilizer feed parts for multi-row fertilization, the left and right air ducts, etc. Arranged symmetrically, the blowing pressure of the left and right air ducts can be maintained substantially evenly, and the difference in blowing pressure to the left and right air ducts can be easily reduced. As a result, each blower for conveying the fertilizer from the plurality of fertilizer feed portions for multi-row fertilization to the planting portion can be evenly blown from the blower through the left and right air ducts to the plurality of fertilizer feed portions. The pressure can be maintained substantially evenly. Therefore, the fertilizer can be conveyed at substantially the same timing from the plurality of fertilizer feed portions for multi-row fertilization to the side surface of each planting strip of the planting portion.

  According to the third aspect of the present invention, the pair of left and right air ducts are extended in a symmetrical manner in a substantially straight line in the left-right direction of the traveling vehicle, and the pair of the left and right air ducts are approximately centered in the lateral width of the traveling vehicle. Since one end of each of the left and right air ducts is connected to the left and right air vents, the air pressure of the left and right air ducts can be maintained substantially evenly, and the air pressure difference between the left and right air ducts can be maintained. It can be easily reduced. As a result, each blower for conveying the fertilizer from the plurality of fertilizer feed portions for multi-row fertilization to the planting portion can be evenly blown from the blower through the left and right air ducts to the plurality of fertilizer feed portions. The pressure can be maintained substantially evenly. Therefore, the fertilizer can be conveyed at substantially the same timing from the plurality of fertilizer feed portions for multi-row fertilization to the side surface of each planting strip of the planting portion.

BEST MODE FOR CARRYING OUT THE INVENTION

  Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a riding rice transplanter, and FIG. 2 is a plan view thereof. In FIG. 1, 1 is a traveling vehicle on which an operator is boarded. The front wheel case 6 is supported by the front axle case 5, the rear axle case 7 is connected to the rear portion of the transmission case 4, and the rear wheel case 8 is supported by the rear axle case 7. The spare seedling stage 10 is attached to both sides of the bonnet 9 that covers the engine 2 and the like, and the mission case 4 and the like are covered by the body cover 12 that is a step on which an operator gets on the footrest 11, and the body cover A driver's seat 13 is attached to an upper portion of the vehicle 12 and a steering handle 14 is provided at the rear of the bonnet 9 in front of the driver's seat 13.

  In the figure, reference numeral 15 denotes a planting part having a seedling mounting table 16 for six-row planting and a plurality of planting claws 17. The planting case 20 is supported by the planting case 20 through the rail 18 and the guide rail 19 so as to be slidable in the left-right direction, and a rotary case 21 that rotates at a constant speed in one direction is supported by the planting case 20. A pair of claw cases 22 are arranged at symmetrical positions around the core, and the planting claws 17 are attached to the tips of the claw cases 22. Further, a support frame 24 is provided on the front side of the planting case 20 via a rolling fulcrum shaft 23, and the support frame 24 is connected to the rear side of the traveling vehicle 1 via a link mechanism 27 including a top link 25 and a lower link 26. A lifting cylinder 28 for raising and lowering the planting part 15 via the link mechanism 27 is connected to the lower link 26, and the front and rear wheels 68 are driven to move, and at the same time, from the seedling stage 16 that reciprocally slides left and right. The seedlings for the stock are taken out by the planting claws 17 and the seedling planting operation is continuously performed.

  In the figure, 29 is a main speed change lever, 30 is a sub-shift lever for planting lifting / lowering and working travel speed, 31 is a planting sensitivity setting device, 32 is a main clutch pedal, 33 is a left and right brake pedal, and 34 is a two-way leveling. A center float 35, a side float for leveling two strips, and a fertilizer 36 for six strips.

  Further, as shown in FIGS. 3, 4, 5, and 6, a fertilizer hopper 37 into which the fertilizer is put, a fertilizer feed case 38 that is a fertilizer feed section for supplying the fertilizer in a fixed amount, and a side groove in the floats 34 and 35. The fertilizer 36 is provided with a turbo blower blower 41 for discharging fertilizer through a flexible pipe transport hose 40 and a hollow fertilizer transport air supply air duct 42 on the front side of the driver seat 13. A blower 41 is attached, and air ducts 42 are connected to six sets of fertilizer feed cases 38 for six strips.

  Further, left and right base frames 45 are attached to both sides of a horizontal frame 44 that is horizontally mounted between the upper ends of the left and right support columns 43 at the rear end of the body frame 3, and the fertilizer 36 is mounted via the base frame 45 that is horizontally mounted in the front-rear direction. A side stay 46 is connected between the rear end of the base frame 45 and the vehicle body frame 3 and a vertical frame 47 is erected on the left and right base frames 45 to support the central receiving plate 48 and the left and right receiving plates 49. The upper front side of the center and left and right receiving plates 48, 49 is integrally fixed with a round pipe-shaped front frame 50, and the upper rear side is integrally fixed with a square pipe-shaped rear frame 51, so that six sets of front and rear frames 50, 51 are provided. The feeding case 38 is fixedly supported.

  Further, the lower outlet 53 of the hopper 37 is fitted to the inlet 52 on the upper front side of the feeding case 38, and the outlet 54 is formed on the lower front side of the feeding case 38. 54 is blocked.

  Further, the bottom cover 56 is detachably fixed to the lower surface of the feeding case 38, and the outlet 57 is formed on the lower surface of the bottom cover 56 made of hard synthetic resin. A resin-made joint pipe 58, a front end of a hard synthetic resin hose joint 59 is detachably fitted to the rear end of the pipe 58, and the conveying hose 40 is fitted to the rear end of the joint 59; 41 is blown out from the air duct 42 to the hose joint 59 and the hose 40, and the fertilizer falling from the outlet 57 of the bottom cover 56 to the middle of the joint 59 is moved to the transfer hose 40, and the joint 59 forming a T-shaped flange. An inlet 60 is formed in the middle so as to open upward, and a fitting cap 61 is fixed to an outlet 57 of the bottom lid 56, and the cap 61 is moved forward. Freely it is fitted removably to the outer wall of the inlet 60, thereby connecting the outlet 57 to the inlet 60.

  Furthermore, it is provided with an inlet plate 64 having an intake port 62, a feeding plate 66 that is a feeding roll having a plurality of substantially square feeding ports 65 on the same circumference, and an outlet plate 68 having a discharge port 67, and is a substantially circular flat plate. The plates 64, 66, 68 made of a metal are arranged in a multilayer between the feeding case 38 and the bottom cover 56, and a feeding shaft 69 is pivotally supported on the feeding case 38 so as to be rotatable substantially vertically. , 66, 68 are passed through the lower end side of the feeding shaft 69, and the plates 64, 66, 68 are supported by the feeding shaft 69 so that they can be pulled out downward, and the plates 64, 66, 68 are connected to the feeding case 38 and the bottom. The inlet plate 64 and the outlet plate 68 are engaged with the feeding case 38, and the feeding shaft 69 is rotated freely with respect to the plates 64 and 68, and the feeding plate 66 is used as the feeding shaft 69. The engaging shaft is supported and the feeding plate 66 is forced by the feeding shaft 69. Rotate to move the entering from inlet 62 to the feeding port 65 manure discharge port 67 is configured so as to drop to the outlet 57 direction. Further, the spring scraper rod 70 is fixed to the feeding shaft 69, and the fertilizer at the bottom lid 56 and the outlet 57 is dropped.

  Further, the PTO shaft 71 for transmitting the output of the engine 2 to the planting portion 15 is extended rearward from the mission case 4, and the bearing case 72 is welded or fixed to the left column 43 by bolting. The shaft 73 is connected to the middle of the PTO shaft 71 via a chain 74, and a vertical drive shaft 77, which is a driving member for feeding, is connected to the rear end portion of the output shaft 75 of the bearing case 72 via a pair of bevel gears 76. It is linked to. Further, when viewed from the rear, the upper end of the vertical drive shaft 77 faces between the second set and the third set of feeding cases 38 from the left side, and is connected to the feeding shaft 69 via a pair of bevel gears 78 in the left-right direction. The upper end of the vertical drive shaft 77 is linked to the feed input shaft 79 via a pair of bevel gears 80. The fertilizer is fed by rotating the feeding shaft 69 through the input shaft 79 by the rotation of the PTO shaft 71. Further, a ring cone continuously variable transmission 81, which is a continuously variable transmission mechanism, is interposed in the middle of the vertical drive shaft 77 to continuously rotate the supply shaft 69, and feed the fertilizer fed from the feed case 38. It is configured to adjust the amount.

  Further, as shown in FIGS. 2, 6, and 7, the blower 41 includes a fan case 83 in which a blower fan 82 is installed and an electric blower motor 84 that drives the blower fan 82. The fan case 83 is fixed inside the lower body cover 12 via the auxiliary vehicle body frame 85, the blower motor 84 is attached to the upper surface of the fan case 83, the suction port 86 is opened downward on the lower surface of the fan case 83, and the fan case 83 A discharge port 87 is formed on the rear surface, the air duct 42 is connected to the discharge port 87, and the air duct 42 is extended to the full width of the fertilizer application 36 using the space on the upper surface of the vehicle body cover 12 behind the driver seat 13.

  Similarly to the front and rear frames 50 and 51, a square pipe-shaped lower frame 88 is integrally fixed to the receiving plates 48 and 49, and an engagement plate 89 is detachably bolted to the lower frame 88 so that the engagement plate 89 faces downward. The hose joint 59 is engaged with the opening notch 90 from below and is detachably bolted and fixed, and the air duct is operated by either the operation of removing the engagement plate 89 from the lower frame 88 or the operation of removing the hose joint 59 from the engagement plate 89. The joining pipe 58 is pulled out from 42, the hose joint 59 is separated from the bottom cover 56, the bottom cover 56 is removed, and the feeding case 38 is cleaned.

  In addition, a blower 41 is disposed inside the vehicle body cover 12 below the driver's seat 13 at the center of the left and right width of the traveling vehicle 1, and a joint pipe 58 is connected to the discharge port 87 connecting portion at the front portion of the air duct 42 that forms the substantially vertical width. The rear part of the air duct 42 to which the air duct 42 is connected is formed in a divergent shape in plan view, the rear cross-sectional area is continuously increased with respect to the front side of the air duct 42, and the in-pipe air resistance of the air duct 42 is of the same size as a whole The amount of air blown to each of the conveying hoses 40 for 6 strips is substantially equal. Further, the blowing direction of the air duct 42 by the blower 41 and the fertilizer conveyance direction of the transfer hose 40 are substantially matched, the branch hose 42 and the transfer hose 40 are connected in a straight line via the hose joint 59, and the discharge port 87 of the blower 41 is connected. The air pressure loss between the hose joints 59 can be reduced and the upper surface side of the air blower 41 is closed by the vehicle body cover 12 to prevent water from entering the fan case 83 during rainy work or car washing.

  Further, lids 91 that can be freely opened and closed are attached to both sides of the rear end of the air duct 42, the lid 91 is removed to clean the inside of the air duct 42, and a suction port 86 is directed toward the upper surface of the transmission case 4 fixed to the body frame 3. The lower opening of the suction port 86 is closed by the mission case 4 to prevent water or mud from entering the fan case 83 from the suction port 86.

  As apparent from the above, in the rice transplanter equipped with the fertilizer application 36 at the rear of the machine, a fertilizer blower 41 is installed in the center of the machine ahead of the fertilizer supply case 38 that is a fertilizer supply part of the fertilizer application 36. The air blower 41 does not need to be moved in and out of the airframe as in the airframe outside installation structure of the airframe, and transportation or car washing can be performed without preventing the air blower 41 from colliding or preventing flooding, and the fertilizer feed case 38 and the air blower 41 on both sides can be transported. The connection distance is shortened to reduce the blowing resistance and to provide a stable supply of fertilizer transport air. The fertilizer blower 41 is installed below the driver's seat 13 and is damaged by a collision, rain water or car wash water enters. This eliminates problems and the problem that the movement of the workers around the driver's seat 13 is restricted, thereby simplifying the structure for mounting the blower 41 and improving workability. The attempt.

  In addition, the fertilizer blower 41 is installed inside the vehicle body cover 12 which is the main unit step, and the damage caused by the collision or the like, the trouble that rainwater or the car wash water enters, and the movement of the worker around the driver's seat 13 are restricted. The air duct 42, which is a blower pipe of the fertilizer blower 41 to be connected to the fertilizer feeding case 38, is enlarged in a widening shape at the outlet side. The air duct 42 is formed so as to reduce the blowing resistance inside the air duct 42 to reduce the blowing pressure loss, thereby reducing the size and weight of the blower 41 and securing the fertilizer conveying wind force.

  Further, even if a blower motor 84 of the fertilizer application fan 41 is disposed at a position higher than the suction port 86 and the discharge port 87 and a heat radiation gap is formed between the blower motor 84 and the blower fan 82, the blower motor 84 is submerged. This eliminates the problem and simplifies the air cooling structure or the waterproof structure of the blower motor 84, and the suction port 86 of the fertilizer blower 41 is provided inside the lower surface side of the vehicle body cover 12, and the vehicle body cover 12 is used as a waterproof cover for the suction port 86. This also eliminates the problem of water being sucked into the suction port 86 during rainy weather work or car washing, omits the waterproof cover for rainy weather work, and improves handling operability. In addition, the fertilizer conveying wind discharge direction of the fertilizer application fan 41 and the fertilizer conveying direction from the fertilizer feeding case 38 are made to coincide, and the conventional fertilizer conveying wind discharge direction is formed in the left-right direction of the machine body and the fertilizer conveyance direction is formed in the rear direction of the machine body. In comparison, the blowing resistance is reduced to reduce the blowing pressure loss, thereby improving the blowing efficiency and reducing the blowing power.

  Further, as shown in FIGS. 8 and 9, a blower 41 is provided substantially vertically between the upper surface of the vehicle body frame 3 and the lower surface of the driver's seat 13, and a blower is provided at the apex portion of the air duct 42 having an isosceles triangle shape in plan view. 41 discharge ports 87 are connected, and fertilizer feed cases 38 for six strips are arranged at the bottom of the air duct 42 to connect the respective hose joints 59. The volume of the air duct 42 is larger than that of FIGS. The air duct 42 is inclined to the front, low, and rear height in a side view so that fertilizer or dust is spread at the rear side of the air duct 42. Prevents staying.

  Further, as shown in FIGS. 10 and 11, a fan 41 is installed on the upper surface of the vehicle body cover 12 on the rear side of the driver's seat 13, and a fertilizer feed case 38 for six strips is provided on the left and right air duct 42 that are arranged in a mountain shape in plan view. The air duct 42 is provided in the middle of the air ducts 42 for six lines, the air duct 42 is inclined to the front high and low in the side view, the air duct 42 is connected to the front high position of the air duct 42, and the air duct 42 The conveyance hose 40 is provided at the rear low position via the front high rear low hose joint 59, and the discharge port 87 to the conveyance hose 40 of the blower 41 are connected in a substantially straight line in a side view, and the ventilation loss reaching the conveyance hose 40 is reduced. Reduce. Further, in the structure in which the fertilizer blower 41 is installed at the center of the machine body in front of the fertilizer feed case 38 which is a fertilizer feed portion of the fertilizer applicator 36, as shown in FIG. Thus, the exhaust duct portion 83a is arranged in front of the fertilizer applicator 36, and the exhaust duct portion 83a extended from the fan case 83 for blowing air from the blower 41 is branched to the left and right to communicate with the fan case 83. The left and right ventilation ports (discharge ports) 87 are formed, and a pair of left and right air ducts 42 are connected to the pair of left and right discharge ports 87 communicating with the fan case 83, or the fan case 83 is discharged as shown in FIG. A right-and-left distributing projection-shaped partition 42 a is formed inside the air duct 42 so as to face the outlet 87, and the six air ducts 42 are divided into three right and left at the central portion, and the central portion near the discharge port 87. The difference in the blowing pressure between the conveying hose 40 on the side and the conveying hose 40 on the side away from the conventional conveying hose 40 is made smaller than that of the conventional single air duct structure, and the blowing pressure for conveying each fertilizer in 6 articles is made uniform, and the blowing loss is reduced. Downsizing.

  As is apparent from the above, in the rice transplanter equipped with the fertilizer applicator 36 at the rear of the machine, a fertilizer blower 41 is installed in the center of the machine in front of the fertilizer feed-out part 38 of the fertilizer applicator 36. There is no need to allow the blower 41 to enter and exit from the inside and outside of the machine as in the case of the outside installation structure, and transport or car washing can be easily performed without preventing the blower 41 from colliding or preventing flooding. By shortening the connection distance of the blower 41, it is possible to easily reduce the blowing resistance and stably supply the fertilizer conveying air.

  In addition, the fertilizer application fan 41 is installed below the driver's seat 13, and there is a problem that damage is caused by a collision, a problem that rainwater or car wash water enters, and a problem that the movement of workers around the driver's seat 13 is restricted. Etc. can be easily eliminated, and simplification of the fan 41 mounting structure and improvement of workability can be easily achieved.

  In addition, the fertilizer application fan 41 is installed inside the step 12 of this machine, and the trouble that is damaged by a collision, the trouble that rainwater or car wash water enters, and the movement of the worker around the driver's seat 13 are restricted. Problems and the like can be easily eliminated, and the fan 41 mounting structure can be simplified and workability can be easily improved.

  Further, the blower pipe 42 of the fertilizer application fan 41 to be connected to the fertilizer feeding unit 38 is formed so that the cross section on the outlet side is widened toward the end, and the blowing resistance inside the blower pipe 42 is reduced to reduce the blowing pressure. Therefore, it is possible to easily reduce the size and weight of the blower 41 and secure the fertilizer transport wind power.

  Further, the blower motor 84 of the fertilizer application fan 41 is disposed at a position higher than the suction port 86 and the discharge port 87, and even if a heat radiation gap is formed between the blower motor 84 and the blower fan 82, the blower motor 84. Therefore, the air cooling structure or waterproof structure of the blower motor 84 can be easily simplified.

  Further, the suction port 86 of the fan 41 for fertilizer application is provided inside the step 12 of the machine. The step 12 can be used as a waterproof cover for the suction port 86, and water is put into the suction port 86 during rainy work or when washing the car. The problem of being sucked in can be easily eliminated, the waterproof cover for rainy weather work can be omitted, and the handling operability can be easily improved.

  Moreover, the fertilizer conveyance wind discharge direction of the fan 41 for fertilizer application and the fertilizer conveyance direction from the fertilizer feeding part 38 are made to correspond, and the conventional fertilizer conveyance wind discharge direction is formed in the left-right direction of the body and the fertilizer conveyance direction is formed in the rear direction of the body. Compared to the above structure, it is possible to easily reduce the blowing pressure loss by reducing the blowing resistance, and to easily improve the blowing efficiency and the blowing power.

  As apparent from the above description and FIG. 12, the invention according to claim 1 includes a planting part 15 having a seedling stage 16 for multi-row planting and a plurality of planting claws 17, and a plurality for multi-strip fertilization. A fertilizer application machine 36 having a fertilizer supply case 38 as a fertilizer supply part is mounted on the traveling vehicle 1, and a plurality of fertilizer supply cases 38 arranged in a line in the left-right width direction of the traveling vehicle 1 by blowing air from the blower 41. A rice transplanter configured to convey fertilizer to the planting unit 15 via a plurality of conveying hoses 40 for multi-strip fertilization includes left and right air ducts 42 that blow air from the blower 41 to the fertilizer 36. Left and right air outlets (discharge ports) 87 are formed in the exhaust duct portion 83a, and left and right air outlets (discharge ports) 87 Left and right Since the ducts 42 are connected to each other, a plurality of fertilizers for multiple strips are used as compared with the conventional structure in which air is blown from a blower arranged on one side of the fertilizer applicator to all fertilizer feed sections through one air duct. The blowing pressure of the feeding case 38 can be maintained evenly. In addition, air duct 42 for conveying fertilizer, etc., compared to a conventional structure in which air is blown from a blower to a plurality of fertilizer feed portions for multi-row fertilization through the same number of air ducts as a plurality of fertilizer feed portions for multi-row fertilization The air blowing structure can be easily configured.

  According to the second aspect of the present invention, the exhaust duct portion 83a is arranged in front of the fertilizer machine 36 at a substantially central position in the left-right width of the traveling vehicle 1, and the exhaust gas is exhausted at a substantially central position in the left-right width of the traveling vehicle 1. Since one end side of each of the left and right air ducts 42 is connected to the duct portion 83a via a pair of left and right air blowing ports 87, a plurality of fertilizer feed cases 38 for left and right fertilization and the left and right air ducts 42 are provided. Etc. can be arranged symmetrically so that the blowing pressures of the left and right air ducts 42 can be maintained substantially evenly, and the difference in blowing pressure to the left and right air ducts 42 can be easily reduced. As a result, air can be evenly blown from the blower 41 to the plurality of fertilizer feeding cases 38 via the left and right air ducts 42, and each blower for conveying the fertilizer from the plurality of fertilizer feeding cases 38 for multi-row fertilization to the planting unit 15. The pressure can be maintained substantially evenly. Accordingly, the fertilizer can be conveyed from the plurality of fertilizer feeding cases 38 for multi-row fertilization to the fields on the sides of the planting strips of the planting unit 15 at substantially the same timing.

  According to the third aspect of the present invention, the pair of left and right air ducts 42 are extended in a symmetrical manner in a substantially straight line in the left-right direction of the traveling vehicle 1, and a pair of left and right air blowers are disposed at a substantially central position of the lateral width of the traveling vehicle 1. Since one end side of the left and right air ducts 42 is connected to the opening 87, the blowing pressure of the left and right air ducts 42 can be maintained substantially evenly, and the difference in blowing pressure to the left and right air ducts 42 can be easily achieved. Can be reduced. As a result, air can be evenly blown from the blower 41 to the plurality of fertilizer feeding sections 38 via the left and right air ducts 42, and the fertilizer can be conveyed from the plurality of fertilizer feeding sections 38 for multi-row fertilization to the planting section 15. Each blowing pressure can be maintained substantially evenly. Therefore, the fertilizer can be conveyed at substantially the same timing from the plurality of fertilizer feeding sections 38 for multi-row fertilization to the side surface of each planting strip of the planting section 15.

It is a whole side view of a riding rice transplanter. It is a whole top view of a riding rice transplanter. It is a side view of a planting part. It is a top view of a fertilizer application part. It is a rear view of a fertilizer application part. It is a cross-sectional side view of a fertilizer application part. It is side explanatory drawing of a fertilizer applicator. It is a top view which shows the modification of FIG. FIG. It is a top view which shows the other modification of FIG. It is the same side view. It is explanatory drawing of the air blower part. It is explanatory drawing of the air blower part.

Explanation of symbols

1 traveling vehicle 15 planting part 16 seedling stand 17 planting claw 36 fertilizer application machine 38 fertilizer feeding case (fertilizer feeding part)
40 Transport Hose 41 Blower 42 Air Duct 83 Fan Case 83a Exhaust Duct 87 Discharge Port (Blower Port)

Claims (3)

A planting part having a seedling stage for multi-row planting and a plurality of planting claws, and a fertilizer machine having a plurality of fertilizer feeding parts for multi-strip fertilization are mounted on a traveling vehicle, and the traveling is performed by blowing air from a blower In the rice transplanter configured to convey the fertilizer from the plurality of fertilizer feeding portions arranged in a line in the left-right width direction of the car to the planting portion via the plurality of conveying hoses for multi-row fertilization,
Left and right air ducts for blowing air from the blower to the fertilizer applicator are provided, and left and right air vents are formed in the exhaust duct portion by branching an exhaust duct portion extending from the fan case for blowing air to the left and right. The rice transplanter is characterized in that the left and right air ducts are connected to the left and right air blowing ports, respectively.   The exhaust duct portion is disposed in front of the fertilizer applicator at a substantially central position in the left-right width of the traveling vehicle, and a pair of left and right air blowers is disposed in the exhaust duct portion at a substantially central position in the lateral width of the traveling vehicle. The rice transplanter according to claim 1, wherein one end side of each of the left and right air ducts is connected via a mouth.   The pair of left and right air ducts are extended in a symmetrical manner in a substantially straight line in the left-right direction of the traveling vehicle, and the left and right air ducts are connected to the pair of left and right air outlets at a substantially central position of the lateral width of the traveling vehicle. The rice transplanter according to claim 1, wherein one end side of each is connected to each other.

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