JP2005204571A - Sulky rice transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sulky rice transplanter easy to travel on a road and load on the platform of a trolley through suppressing the overhang of an agrochemical spreader in the vehicle cross direction in such a condition that a seedling planting apparatus is switched to a folded mode. <P>SOLUTION: This sulky rice transplanter has the following construction and mechanism: The seedling planting apparatus 7 is composed of right and left planting portions dividedly in two and so constructed as to be switchable between the working mode of laterally joining the right and left planting portions in the transverse direction of the vehicle body and the folded mode of separating the right and left planting portions and arranging the reverse faces of seedling stands against each other in the transverse direction of the vehicle body, and the agrochemical spreader joined and supported via a supporting part on the rear portion of the seedling planting apparatus 7 is designed to be shiftable between a housing position approaching the seedling planting apparatus 7 and a spreading position set apart from the apparatus 7. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a riding type provided with a seedling planting device connected to the rear part of a self-propelled vehicle body so as to be movable up and down, and a medicine spraying device connected to and supported by a rear part of the seedling planting device via a support unit. It relates to rice transplanters.

In such a riding type rice planter, the seedling planting device is divided into a right and left planting part that is divided into right and left parts, and the right and left planting parts are connected side by side in the lateral direction of the vehicle body. It can be switched between the working state and the folded state in which the right and left planting parts are separated and the back of the seedling stand faces each other in the left-right direction of the car body. When doing, there was what was constituted so that overhang of the width in the horizontal direction of a seedling planting device was suppressed (for example, refer to patent documents 1).
In addition, there is a configuration in which a medicine spraying device is connected to and supported by a rear portion of a seedling planting device via a support portion, and the medicine is sprayed on a seedling table or a farm field (for example, see Patent Document 2). .)
JP 2000-270628 A Japanese Patent Laid-Open No. 7-203829

  As shown in Patent Document 1, the seedling planting device is configured to be switchable between a working state and a folded state, and a medicine spraying device is connected to and supported by a rear portion of the seedling planting device configured as described in Patent Document 2. When the seedling planting device is switched to the working state, the chemical spraying device aligned with the seedling planting device and the vehicle front-rear direction is in the state where the seedling planting device is switched to the folded state. Even if the seedling planting device is switched to the folded state to suppress the overhanging of the seedling planting device in the vehicle left-right direction when running on the road or mounting on the platform of a transport vehicle, it is lined up in the left-right direction. In some cases, the device protrudes greatly in the left-right direction of the vehicle, making it difficult to run on the road or mount it on the carrier bed.

  The present invention has been made in view of the above circumstances, and its purpose is to reduce the overhang of the medicine spraying device in the lateral direction of the vehicle body in a state where the seedling planting device is switched to the folded state. It is in the point of providing a riding type rice transplanter that can be easily mounted on a carrier bed.

The riding type rice transplanter of the present invention includes a seedling planting device that is connected to the rear part of the self-propelled vehicle body so as to be movable up and down, and a drug spraying device that is connected to and supported by the rear part of the seedling planting device via a support unit. A riding type rice transplanter,
In the first characteristic configuration, the seedling planting device is configured to be divided into a right and left planting part, a right planting part and a left planting part, and the right and left planting parts are connected side by side in a vehicle body lateral direction. And a folding state in which the right and left planting parts are separated and the back surfaces of the seedling table are arranged facing each other in the left-right direction of the vehicle body, and the medicine spraying device includes the medicine The spraying device is characterized in that the position can be changed between a storage position approaching the seedling planting device and a spraying position separating from the seedling planting device.

  That is, since the medicine spraying device is configured to change the position of the medicine spraying device between a storage position approaching the seedling planting device and a spraying position away from the seedling planting device, The medicine spraying device can be separated from the seedling planting device to the extent that it is suitable for changing the position of the medicine spraying device to the spraying position and spraying the medicine. Therefore, when the seedling planting device is switched to the folded state, the position of the drug spraying device in the state where the seedling planting device is switched to the folded state is changed by changing the position of the drug spraying device to the storage position. The position is changed from the outer side to the inner side in the direction, and the overhang of the medicine spraying device in the vehicle body width direction in the state where the seedling planting device is switched to the folded state can be suppressed.

  Therefore, by changing the position of the medicine spraying device to the working position, it is possible to disperse the medicine well away from the seedling planting device, and the position of the medicine spraying device is changed to the storage position approaching the seedling planting device. By suppressing the overhang of the chemical spraying device in the lateral direction of the vehicle body when the seedling planting device is switched to the folded state, it is possible to provide a riding-type rice transplanter that is easy to run on the road and to be loaded onto a carrier bed. It was.

  The second characteristic configuration is configured such that, in addition to the first characteristic configuration, the support unit swings around the horizontal axis so that the medicine spraying device changes its position to the storage position and the spraying position. It is characterized by that.

  In other words, the position of the medicine spraying device can be changed between the storage position and the spraying position by swinging the support portion, and there is little possibility of inconvenience such as soil biting, and the position of the medicine spraying device can be changed. Can be easily performed.

  In the third feature configuration, in addition to the second feature configuration described above, the support portion includes a pair of proximal end support portions erected on the rear portion of the seedling planting device and a pair of distal ends connected to the drug spraying device. A side support portion, a connecting portion for connecting the base end side support portion and the front end side support portion so as to be able to swing relative to each other around the horizontal axis, and the base end side support portion and the front end side support portion are fastened together. A fastening part that can be fixed, and the fastening part comprises a rod-like member having female threaded parts at both ends, and a pair of male threaded members that are screwed into the female threaded part. The male screw member is screwed into the female screw portion with the end side support portion and the distal end side support portion interposed therebetween, and the proximal end support portion and the distal end side support portion are fixed to each other. It is characterized by that.

  That is, by screwing the male screw member into the female screw part with the base end side support part and the front end side support part sandwiched between the base end side support part and the front end side support part to fix each other, The distal end side support portion and the proximal end side support portion are fastened and fixed, and the one distal end side support portion and the proximal end side support portion and the other distal end side support portion and the proximal end side support portion that are tightened and fixed are fixed. A pair of base-side support portions, a pair of tip-side support portions, and a rod-shaped member are integrated and supported by connecting and fixing the base-side support portion and the tip-side support portion to each other via a rod-like member. The strength of the part can be increased.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[1]
As shown in FIG. 1, an engine 3 and a transmission case 4 are provided at the front of a self-propelled vehicle body supported by front wheels 1, rear wheels 2, and auxiliary rear wheels 2a, and a driving unit 5 is provided at the center of the self-propelled vehicle body. The seedling planting device 7 connected to the rear portion of the self-propelled vehicle body so as to be movable up and down is provided, and the seedling planting device 7 has a seedling planting chemical spraying device (an example of the drug spraying device) at the rear of the seedling planting device 7. ) B and a field medicine spraying device (an example of a medicine spraying device) C are connected and supported to constitute a riding type rice transplanter. The seedling planting device 7 is connected to and supported by the rear part of the self-propelled vehicle body via a four-link type link mechanism 6, and the posture of the link mechanism 6 is changed by the hydraulic cylinder 14 so that the seedling planting device 7 moves up and down. It is configured as follows.

  As shown in FIGS. 1, 2, 9, especially FIG. 9, the seedling planting device 7 is configured in a ten-row planting type, and is supported on five transmission cases 8 and left and right sides of the transmission case 8 so as to be rotatable. The rotating case 9, the pair of planting arms 10 provided at both ends of the rotating case 9, the five grounding floats 11, the seedling setting table 13 including the seedling setting surface 13a (see FIG. 3) for the strips, A belt-type vertical feed mechanism 12 provided on a seedling setting surface 13a of the seedling setting table 13 is configured.

  Thus, as the seedling platform 13 is driven to reciprocate laterally to the left and right, the rotary case 9 is driven to rotate, and the planting arm 10 serves to plant the seedlings on the seedling platform 13 (the seedling surface 13a). 13 (seedling surface 13a) are alternately taken out and planted on the rice field. When the seedling table 13 reaches the right and left ends of the reciprocating lateral feed drive, the vertical feed mechanism 12 causes the seedling table 13 (seedling table 13). The seedling of the surface 13a) is sent down.

[2]
The seedling planting device 7 is divided into a right and left planting part 7R and a left planting part 7L. The structure of the right and left planting parts 7R and 7L will be described next.
As shown in FIGS. 2 and 9, the boss portion 6b is fixed to the lower portion of the vertical link 6a (see FIG. 1) at the rear end of the link mechanism 6, and the support case 15 is rolled around the front and rear axis P1 of the boss portion 6b. It is connected freely. Support frames 16 and 17 are fixed laterally on the upper and lower portions of the support case 15, and right and left support frames 18 are swingably connected around the longitudinal axis P <b> 2 of the support frames 16 and 17. The right and left support frames 19 are connected to the periphery of the vertical axis P3 at the end of the support frame 18 via a bracket 20 so as to be swingable.

  As shown in FIGS. 2 and 9, the right three transmission cases 8 are connected to the right support frame 19 in a cantilevered manner, and the left two transmission cases 8 are connected to the left support frame 19. It is connected in a cantilevered manner facing backwards. A bracket 21 extends rearward from the three right transmission cases 8, and a right frame 22 is fixed to the bracket 21 so as to surround the rear of the three right transmission cases 8. A bracket 21 extends rearward from the two left transmission cases 8, and a left frame 22 is fixed to the bracket 21 so as to surround the rear of the two left transmission cases 8.

  As shown in FIG. 3, the right seedling setting portion 13 </ b> R is configured by seven partition portions 13 b between the right six seedling setting surfaces 13 a and the adjacent seedling setting surfaces 13 a, and the four left seedlings are formed. The left seedling platform portion 13L is configured by the five partition portions 13b between the mounting surface 13a and the adjacent seedling mounting surface 13a, and the seedling platform 13 is configured by the right and left seedling platform portions 13R and 13L. The vertical feed mechanism 12 is provided on each of the seedling setting surfaces 13a.

  As shown in FIGS. 3 and 9, the right sliding rail 34 is supported across the three right planting transmission cases 8, and the left sliding rail is spanned across the two left planting transmission cases 8. A moving rail 34 is supported, and a lower portion of the seedling bed 13 is supported slidably along the right and left sliding rails 34. As shown in FIG. 2, the vertical frame 35 is fixed to the right and left support frames 19, and the right and left slide rails 37 are installed over the upper portion of the vertical frame 35, and the right and left slide rails 37. The upper part of the seedling bed 13 is slidably supported. As a result, the seedling bed 13 is driven to reciprocate horizontally and laterally along the right and left slide rails 34 and the right and left slide rails 37.

  With the above structure, as shown in FIGS. 3 and 9, the right three transmission cases 8, the right support frame 19, the right vertical frame 35, the right slide rail 37, the right slide rail 34, the right The right planting portion 7R is configured by the three grounding floats 11, the right seedling stage portion 13R, the vertical feed mechanism 12, and the like. Also, the two left transmission cases 8, the left support frame 19, the left vertical frame 35, the left slide rail 37, the left slide rail 34, the two left grounding floats 11, the left seedling platform The left planting portion 7L is configured by the portion 13L, the vertical feed mechanism 12, and the like.

[3]
Next, the fertilizer application A will be described.
As shown in FIG. 1, five feeding parts 24 corresponding to the two items are attached to the rear side of the driving seat 23 provided in the driving part 5, and five hoppers 25 made of transparent resin and storing fertilizer are provided. The blower 26 is provided to supply the conveying air to the feeding portion 24.

  As shown in FIGS. 2 and 9, a vertical frame 47 is fixed to the right and left support frames 17, and right and left metal support plates 48 are fixed to the top of the vertical frame 47. Six flexible hoses 27 are connected across the three right feeding portions 24 and the right support plate 48, and across the two left feeding portions 24 and the left support plate 48. Four flexible hoses 27 are connected.

  As shown in FIG.1 and FIG.2, ten grooving devices 29 for feeding fertilizer to the rice field while forming a groove on the side of the seedling planted by the planting arm 10 are prepared. A vessel 29 is attached to the ground float 11. The right and left metal support plates 53 are fixed to the right and left slide rails 37 by a support frame 54. Six flexible hoses 28 are connected across the right six grooved grooves 29 and the right support plate 53, and the left four grooved grooves 29 and the left support plate 53 are connected to each other. Four flexible hoses 28 are connected.

  With the above structure, as the seedlings are planted on the rice field as described in [1] above, the fertilizer in the hopper 25 is fed out by a predetermined amount from the feeding section 24, and the hoses 27 and 28 are fed by the blower 26 carrying air. The fertilizer is fed into the groove formed on the paddy surface by the groove generator 29.

[4]
Next, the case where the seedling planting device 7 is set from the working state to the folded state will be described.
The state shown in FIGS. 9 and 17 is a working state in which the right and left planting parts 7R and 7L and the right and left seedling setting parts 13R and 13L are connected side by side in the lateral direction of the vehicle body. When the seedling planting device 7 is set from the working state to the folded state, the seedling setting stage 13 is separated into right and left seedling setting parts 13R and 13L, and the right seedling setting part 13R is moved to the right end of the reciprocating lateral feed drive. To the left end of the reciprocating lateral feed drive.

  As shown in FIGS. 9 to 10, while the right support frame 18 is swung backward about the vertical axis P2, the right support frame 19 is swung laterally outward about the vertical axis P3. Thereby, the seedling planting device 7 is separated into the right and left planting parts 7R and 7L, and the right support plate 53 (the right planting part 7R) is separated from the right support plate 48. As shown in FIGS. 10 to 11, the right support frame 18 is swung further rearward around the vertical axis P2, and the right support frame 19 is swung further laterally outward about the vertical axis P3. The right planting part 7R and the right seedling rest part 13R are set to face the right side of the vehicle.

  Next, as shown in FIGS. 9 to 10, the left support frame 19 is swung laterally outward about the vertical axis P3 while the left support frame 18 is swung rearward about the vertical axis P2. Therefore, the left support plate 53 (left planting portion 7L) is separated from the left support plate 48. As shown in FIGS. 10 to 11, the left support frame 18 is further swung back around the vertical axis P2, and the left support frame 19 is swung further laterally outward around the vertical axis P3. The left planting portion 7L and the left seedling platform portion 13L are set to face the left side of the vehicle.

  In this way, the right planting portion 7R and the right seedling platform portion 13R are set to face the vehicle right side, and the left planting portion 7L and the left seedling platform portion 13L are oriented to the vehicle left side. 11 and FIG. 18 is switched to a folded state in which the back surfaces of the right and left seedling platform portions 13R and 13L are arranged facing each other in the lateral direction of the vehicle body as shown in FIGS. The width of the seedling planting device 7 in the folded state is narrower than the width of the seedling planting device 7 in the working state shown in FIG.

[5]
Next, the right and left support portions that connect and support the seedling surface chemical spraying device B that supplies the seedling surface 13a with a chemical (insecticide, fungicide, etc.) will be described.
As shown in FIGS. 2, 4, and 5, seven metal plate-like support brackets 32 are prepared, and the seven support brackets 32 are all the same in the same shape. The support bracket 32 is formed in a U-shape when viewed from the side, and a large number of attachment holes 32a are opened at the upper portion, and the lower portion is bent into an oblique crank shape to form an inclined portion 32b. As shown in FIGS. 3 and 8, the support bracket 32 is fixed to the lower portion of the right seedling portion 13R and the second, third and fifth partition portions 13b from the right end portion in the right seedling stage portion 13R. Yes. As shown in FIGS. 3 and 7, the support bracket 32 is fixed to the left seedling portion 13 </ b> L at the left end, the second and third partitions 13 b from the left end.

  As shown in FIGS. 3, 5, and 8, in the right seedling stage portion 13 </ b> R, a pipe-like support frame is provided at the right end portion of the right seedling platform portion 13 </ b> R and below the fifth support bracket 32 from the right end portion. 33 is fixed, and a support frame 36 is fixed to the lower portion of the third support bracket 32 from the right end of the right seedling stage portion 13R. As shown in FIGS. 3, 4, and 7, a pipe-shaped support frame 38 is fixed to the upper portion of the support bracket 32 at the left end portion of the left seedling platform portion 13 </ b> L in the left seedling platform portion 13 </ b> L, A support frame 39 and a pipe-like support frame 33 are fixed to the lower part of the second and third support brackets 32 from the left end of the left seedling stage portion 13L.

  As shown in FIGS. 3, 5, and 8, a right support member 31 having a U-shaped cross section is prepared, and a pipe-like support portion 40 is fixed to the right support member 31. The support frame 40 of the right support member 31 is attached to the support frame 33 of the fifth support bracket 32 from the right end part and the right end part of the right seedling support part 13R, and the right seedling support part 13R A support frame 36 of the third support bracket 32 from the right end is attached to the right support member 31.

  As shown in FIGS. 3, 4, and 7, a left support member 31 having a U-shaped cross section is prepared, and pipe-like support frames 41 and 42 are fixed to the left support member 31. The support frames 41 and 42 of the left support member 31 are attached to the support frames 38 and 33 of the third support bracket 32 from the left end portion and the left end portion of the left seedling stage portion 13L, and the left seedling setting portion A support frame 39 of the second support bracket 32 from the left end of the base portion 13 </ b> L is attached to the left support member 31.

  As shown in FIGS. 3, 5, and 8, the right guide rod 43 is attached over the attachment holes 32 a of the four support brackets 32 in the right seedling stage portion 13 </ b> R. As shown in FIG. 3, the left guide rod 43 is attached to the left seedling stage portion 13L over the attachment holes 32a of the three support brackets 32. In this case, by changing the mounting hole 32a of the support bracket 32, the positions of the right and left guide rods 43 can be changed up and down. A connection portion 43a is provided at the right end portion of the left guide rod 43 (see FIG. 3), and the left end portion of the right guide rod 43 is configured to be connectable and detachable to the connection portion 43a of the left guide rod 43. Yes.

  When the seedling planting device 7 is set from the working state to the folded state, the right planting portion 7R and the right seedling platform portion 13R are first set to the folded state as described in [4] above, and then The left planting part 7L and the left seedling stage part 13L are set in the folded state.

[6]
Next, the right and left supply devices 30 and the right and left drive mechanisms 44 in the seedling surface chemical spraying device B will be described.
As shown in FIGS. 3 and 17, the right drive mechanism 44 is provided at the right end of the right support member 31, and the left drive mechanism 44 is provided at the left end of the left support member 31. As shown in FIG. 6, a drive sprocket 45 and a driven sprocket 46 are rotatably supported by the right and left drive mechanisms 44, and a motor 49 for rotating the drive sprocket 45 forward and backward is provided. The driven sprocket 50 is rotatably supported by the left end portion of the right support member 31 (the right end portion of the left support member 31), and the chain 51 is wound around the drive sprocket 45 and the driven sprockets 46, 50. The chain 51 is disposed inside the right and left support members 31.

  As shown in FIGS. 4, 5, and 6, the right and left supply devices 30 include a hopper 52 that stores a medicine (insecticide, bactericidal agent, and the like), a feeding unit 55 that is connected to a lower portion of the hopper 52, and a feeding unit 55. The supply hose 56 etc. connected with the lower part of this are comprised. A guide shoe 57 having a U-shaped cross section is fixed to the lower portion of the hopper 52, the guide shoe 57 is movably mounted on the upper portions of the right and left support members 31, and a roller 58 provided in the feeding portion 55 is provided. It is applied to the right and left support members 31. A feeding roller 59 is rotatably supported inside the feeding portion 55, and a support shaft 59 a of the feeding roller 59 protrudes from the feeding portion 55 and enters the right and left support members 31. A sprocket 60 fixed to 59 a is engaged with the chain 51. The occlusion portion 61 is fixed to the feeding portion 55 and enters the right and left support members 31, and the occlusion portion 61 is engaged with the chain 51.

  As shown in FIGS. 4, 5 and 6, in the right and left supply devices 30, the cored bar member 62 is provided inside the supply hose 56, and the attitude of the supply hose 56 is set by the cored bar member 62. The cored bar member 62 is made of metal and has an elongated flat plate shape. As shown in FIGS. 2, 3, and 5, in the right supply device 30, the supply hose 56 is slightly bent to the right drive mechanism 44 side when viewed from the front, and is bent to the front side when viewed from the side. As shown in FIGS. 2, 3, and 4, in the left supply device 30, the supply hose 56 is slightly bent to the left drive mechanism 44 side in a front view and is bent to the rear side in a side view. As a result, as shown in FIGS. 2, 4, and 5, in the right and left supply devices 30, the supply port 56 a at the lower end of the supply hose 56 is in the same position in a side view. 56a is located behind the right and left guide rods 43.

  With the above structure, as shown in FIGS. 3 and 6, the drive sprocket 45 and the chain 51 are rotated forward and backward by the motor 49, and the right supply device 30 is moved to the right and left ends of the right support member 31. The left supply device 30 is reciprocally driven across the right and left end portions of the left support member 31. In this case, when the right supply device 30 is positioned at the right end of the right support member 31, the left supply device 30 is positioned at the right end of the left support member 31, and the right supply device 30 is When positioned at the left end portion of the support member 31, the right and left supply devices 30 are simultaneously reciprocated in the same direction so that the left supply device 30 is positioned at the left end portion of the left support member 31.

  When the right and left supply devices 30 are reciprocally driven as described above, the sprocket 60 is rotationally driven by the chain 51 and the feeding roller 59 is rotationally driven as shown in FIGS. The stored medicine (insecticide, bactericidal agent, etc.) is fed out by a predetermined amount by the feeding roller 59 and falls downward from the supply port 56 a of the supply hose 56. As a result, as shown in FIG. 3, a drug (insecticide, fungicide, etc.) from the right supply device 30 is applied to the seedling placed on the right seedling setting portion 13R (six seedling setting surface 13a) or Fertilizer is supplied, and a drug (insecticide, fungicide, etc.) or fertilizer or fertilizer is supplied from the left supply device 30 to the seedling placed on the left seedling stage portion 13L (4 seedling setting surface 13a). Supplied.

In this case, as shown in FIGS. 4 and 5, the seedling placed on the right seedling stage portion 13 </ b> R (six seedling setting surface 13 a) is tilted slightly forward by the right guide rod 43 and left The seedling placed on the seedling raising portion 13L (four seedling placement surfaces 13a) is tilted slightly forward by the left guide rod 43, and the right and left feeding devices 30 are placed on the tilted portion. Supplies chemicals (insecticide, fungicide, etc.).
As described above, when the right and left supply devices 30 are driven to reciprocate, chemicals (insecticide, bactericides, etc.) may also be supplied to the partition portion 13b (support bracket 32). In this case, as shown in FIGS. 3, 4, and 5, the inclined portion 32b of the support bracket 32 guides the medicine (insecticide, fungicide, etc.) to the seedling on the adjacent seedling setting surface 13a.

[7]
Next, a field medicine spraying device C for spraying a medicine (herbicide etc.) on the field will be described.
As shown in FIG. 12, the field medicine spraying device C has a hopper 67 for storing powdered medicine (herbicide), a feeding mechanism 68 for feeding the stored medicine by a predetermined amount, and 10 dispensed medicines. A spreading mechanism 69 that diffuses and spreads on the planting trace with a width corresponding to the planting width, a feeding mechanism 68, a spraying case 70 that houses the spreading mechanism 69, and the like, and the spraying case 70 of the field medicine spraying device C However, as shown in FIG. 1, the rear portion of the seedling planting device 7 is connected and supported via a support portion 66.

  As shown in FIGS. 12 and 13, the hopper 67 is formed with a single downflow cylinder 67 a that opens downward at a central rear portion. The entire hopper 67 is detachably fitted to the upper end of a cylindrical portion 70a connected to the upper central portion of the spray case 70, and is fastened by left and right buckles 71 provided in the cylindrical portion 70a. Yes. An inner case portion 70b that opens upward is provided inside the cylindrical portion 70a of the spray case 70, and the feeding mechanism 68 is provided in the inner case portion 70b.

The feeding mechanism 68 includes a pan 72, a pan driving mechanism 76, and the like. The feeding mechanism 68 feeds a medicine from the medicine flow-down opening a formed at the lower end of the flow-down cylinder 67a by the weight 72 and supplies the medicine to the diffusion mechanism 69. To do.
The eye plate 72 is formed of a thick resin material having a fan shape in a planar shape, and the eye plate 72 is supported by the hopper 67 so as to be swingable around the vertical axis P and not to be dropped. A pair of feed holes b penetrating vertically is formed near both ends of the outer periphery of the eye plate 72, and each feed hole b is formed by the eye plate 72 reciprocally swinging horizontally around the vertical axis P. Moves between a drug receiving position facing the drug flow lower opening a and a position away from the drug flow lower opening a. The eye plate 72 is driven to swing back and forth by an eye plate driving mechanism 76 having a stepping motor 75.

A pair of left and right funnel-shaped flow guide portions 70c are formed at the rear portion of the bottom surface of the inner case portion 70b, and a shield plate 74 made of a spring plate material is screwed and fixed to the entrance portion in a horizontal cantilever manner. ing. The shield plate 74 is elastically pressed to the lower surface of the eye plate 72, whereby the upper surface of the eye plate 72 is brought into close contact with the lower end of the flow-down cylinder 67a, and the shield plate 74 is brought into close contact with the lower surface of the eye plate 72 to slide. It comes to move. In the state where the delivery hole b is located at the medicine receiving position facing the medicine flow lower port a, the lower part of the delivery hole b is blocked by the shielding plate, and in the state where the delivery hole b is located away from the drug flow lower port a. The lower part of the feeding hole b is configured to be opened. In the state where the delivery hole b is located at the medicine receiving position facing the medicine flow-down port a, the drug flow-down port a communicates with the delivery hole b, and in the state where the delivery hole b is located away from the drug flow-down port a The flow-down port a is blocked by the eye plate 72.
Further, a brush 73 acting on the upper surface of the eye plate 72 is provided on the left and right of the lower end portion of the flow-down cylinder 67a, and the medicine supplied and filled in the feeding hole b is slid by the brush 73 so as to feed out a fixed amount. It is configured.

  Therefore, the eye plate 72 is reciprocally driven by the eye plate driving mechanism 76 to change the position of the delivery hole b to the position facing the medicine flow-down port a and the position away from the drug flow-down port a. When in the position facing the mouth a, the delivery hole b is closed by the shielding plate 74 from below, so that the medicine in the hopper 67 flows into the delivery hole b from the medicine flow-down opening a, and the delivery hole b is in the medicine flow-down opening a. When it moves to a position where it is removed from the feed hole b, the feed hole b is released from the shielding plate 74 and opened downward, so that the medicine in the feed hole b is dropped and discharged to the flow guide part 70c.

The diffusion mechanism 69 includes a diffusion blade 77, a motor 78, and the like, and is configured to diffuse the medicine fed by the feeding mechanism 68.
That is, a diffusion chamber S opened downward and rearward is formed inside the spray case 70, and the diffusion chamber S and the flow guide part 70c are communicated with each other. The medicine that has been fed out and discharged to the flow guide part 70 c is dropped and supplied to the diffusion chamber S, and the medicine that has been dropped and supplied to the diffusion chamber S is diffused by the diffusion blades 77 that are rotationally driven by the motor 78 to the field. Scatter.

[8]
Next, the said support part 66 which connects and supports the agricultural chemical spraying apparatus C is demonstrated.
As shown in FIGS. 14 and 15, the support portion 66 includes a pair of support brackets (corresponding to a base end side support portion) 81 erected on the rear portion of the seedling planting device 7, and a field medicine spraying device C. A pair of support frames (corresponding to the front end side support portion) 82 connected to each other, and bolts and nuts for connecting these support brackets 81 and the support frame 82 so as to be relatively swingable around the horizontal axis. The connecting portion 83, and the fastening portion 84 that can fasten and fix the support bracket 81 and the support frame 82 to each other.

The pair of support brackets 81 are erected by being divided into a second transmission case 8 and a third transmission case 8 from the right side of the three transmission cases 8 provided in the right planting portion 7R. As shown in FIG. 16, each support bracket 81 is formed with a swing fulcrum hole 81a and a position adjusting hole 81b formed in an arc shape around the hole.
The pair of support frames 82 are constituted by a single frame member connected at the upper part, and as shown in FIG. 16, plate-like portions 82c are provided at the lower parts of the support frame 82, respectively. The plate-like member 82c is formed with a connecting round hole 82a and an adjusting round hole 82b. The support frame 82 on the left side is provided with an inclined portion that is inclined to the left side toward the upper end side, and the field medicine spraying device C is paired so that the field medicine spraying device C is located at the center in the left-right direction of the vehicle. It is placed and supported on the upper part of the supporting frame 82 in a state of being shifted to the left side.

  As shown in FIGS. 15 and 16, the seedling planting apparatus is configured such that the support bracket 81 and the support frame 82 are inserted into the swing fulcrum hole 81 a and the connection round hole 82 a. 7 is connected so as to be able to swing relative to the horizontal axis Q along the horizontal width direction of the frame 7, and a part of the support frame 82 of the support 66 is swinged around the horizontal axis Q with respect to the support bracket 81. Thus, the medicine spraying device C placed and supported on the upper end portion of the support frame 82 can be repositioned between the storage position approaching the seedling planting device 7 and the spraying position away from the seedling planting device 7. It is configured.

  The tightening portion 84 has a rod-shaped member 85 made of a metal pipe member provided with female screw portions 85a at both ends, and a male screw member 86 made of bolts screwed into the female screw portion 85a. In the state where the male screw member 86 is inserted into the adjustment round hole 81b of the support bracket 81 and the adjustment round hole 82b of the support frame 82, the male screw portion 86 of the rod-like member 85 is inserted. By tightening the female screw portion 85a, the support bracket 81 and the support frame 82 are sandwiched between the head portion 86a of the male screw portion 86 and the rod-like member 85, and the support bracket 81 and the support frame 82 are fixed to each other. Is done.

  When the position of the field medicine spraying device C is adjusted, the tightening of the connecting portion 83 and the tightening of the male screw portion 86 in the tightening portion 84 are loosened, and the support frame 82 is swung around the horizontal axis Q to be used for the field. This is performed by tightening the male screw portion 86 of the connecting portion 83 and the tightening member 84 in a state where the medicine spraying device C is swung to a desired position. Therefore, when spraying the medicine, the support frame 82 is swung clockwise as viewed from the left side, and the field medicine spraying device C is separated from the seedling planting device 7 to an extent suitable for spraying the medicine. Can do. Then, as shown in FIG. 18, when the seedling planting device 7 is switched to the folded state in order to facilitate traveling on the road or mounting on the carrier platform, as shown in FIG. Is moved counterclockwise as viewed from the left side, and the position of the field medicine spraying device C in the state where the seedling planting device 7 is switched to the folded state is changed from the outer side to the inner side in the lateral direction of the vehicle body. Thus, the width of the riding type rice transplanter in the vehicle body width direction can be reduced.

[Another embodiment]
(1) In the above embodiment, as the drug spraying device, the seedling mounting surface spraying device B that supplies the seedlings to the seedling surface 13a and the field spraying device C that sprays the drug to the field are provided. Although only the medicine spraying device C is configured to be adjustable between the storage position and the spraying position, both the seedling surface spraying device B and the field medicine spraying device C can be adjusted to the storage position and the spraying position. Moreover, you may comprise only the chemical | medical agent spraying apparatus B for seedling raising surfaces so that position adjustment is possible to a storage position and a spraying position.

(2) In each of the above-described embodiments, the support 66 is configured to change the position between the storage position and the spraying position when the support 66 swings around the horizontal axis. You may comprise so that the chemical | medical agent spraying apparatus C may change a position to a storage position and a spraying position by sliding to the attachment apparatus 7 in a perspective direction.

(3) In each of the above embodiments, the field medicine spraying device C is connected and supported only to the right planting part. However, the field medicine spraying apparatus C includes the right medicine spraying part and the left medicine spraying part. The right medicine spraying part may be connected and supported to the right planting part, and the left medicine spraying part may be connected and supported to the left planting part.

Overall side view of riding rice transplanter Whole side view of seedling planting device Rear view of seedling platform Vertical side view of the left support member and the vicinity of the left supply device Longitudinal side view of the vicinity of the right support member and the right supply device Longitudinal rear view near the right drive mechanism Perspective view showing the vicinity of the left support member Perspective view showing the vicinity of the right support member Plan view showing seedling planting device in working state Plan view showing a state between the working state and the folded state Plan view showing the seedling planting device in the folded state Partial cutaway side view of a field chemical spraying device Partial cutaway rear view of a field chemical spraying device Rear view showing the support state of the field medicine spraying device The perspective view which shows a support part Side view showing the storage position and spray position of the medicine spraying device Plan view showing seedling planting device in working state Plan view showing the seedling planting device in the folded state Rear view of riding rice transplanter in the folded state

Explanation of symbols

7 Seedling planting device 7L Right planting part 7R Left planting part 13 Seedling platform 66 Support part 81 Support bracket (base end side support part)
82 Support frame (tip side support)
83 connecting part 84 tightening part 85 rod-like member 85a female screw part 86 male screw member C chemical spraying device (medical spraying device for field)
Q Horizontal axis

Claims (3)

This is a riding type rice transplanter equipped with a seedling planting device that is connected to the rear part of the self-propelled vehicle body so as to be movable up and down, and a medicine spraying device that is connected to and supported by a rear part of the seedling planting device via a support part. And
The seedling planting device is configured to be divided into right and left planted parts of a right planting part and a left planting part, and the right and left planting parts are connected side by side in the left-right direction of the vehicle body, and The right and left planting parts are separated, and are configured to be switchable to a folded state in which the rear surfaces of the seedling table are arranged facing each other in the lateral direction of the vehicle body,
The riding type rice transplanter in which the medicine spraying device is configured to be able to change the position of the medicine spraying device between a storage position approaching the seedling planting device and a spraying position away from the seedling planting device.   The riding type rice transplanter according to claim 1, wherein the medicine spraying device is configured to change a position between the storage position and the spraying position when the support portion swings around a horizontal axis. The support part is a pair of proximal end side support parts erected at the rear part of the seedling planting device, a pair of distal end side support parts connected to the drug spraying device, and these proximal end side support parts and distal end side support parts A coupling portion that couples a portion so as to be relatively swingable around the horizontal axis, and a fastening portion that can fasten and fix the proximal end side support portion and the distal end side support portion to each other,
The tightening portion is composed of a rod-like member provided with female screw portions at both ends, and a pair of male screw members that are screwed into the female screw portion, and the proximal end side support portion and the distal end side support portion 3. The riding die according to claim 2, wherein the male screw member is screwed into the female screw portion in a state of sandwiching the pin and the base end side support portion and the distal end side support portion are fixed to each other. Rice transplanter.

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