JP4568567B2 - Seedling planting equipment - Google Patents

Description

  The present invention relates to a seedling planting mechanism that is driven so as to perform a seedling planting motion in which the tip of a seedling planting claw draws a turning trajectory and reciprocates in the vertical direction of the machine body. The present invention relates to a seedling placement device that is provided with a guide rail that slides and acts on a lower end side of a seedling placement base, and a seedling placement base that is reciprocated in the horizontal direction and supplies seedlings to a seedling placement mechanism.

  In the seedling planting apparatus, conventionally, as shown in, for example, Patent Document 1, an upper horizontal frame 29 connected to the upper part of the seedling mount 14 extends upward from a support case 11 (corresponding to a planting machine body). A lower horizontal frame 29 configured to be supported by a roller at the upper end of the frame 66 so as to be laterally movable and connected to a lower portion of the seedling mount 14 supports a guide member 62 and a support for the planting case 12 (equivalent to a planting machine body). By being configured to be supported by the guide rail 51 connected through the rod 64 so as to be laterally movable through the guide member 59 and the mounting member 60, the seedling stage 14 is guided by the guide rail 51 and planted. The seedling support structure was configured to be supported so as to be movable in the lateral direction.

  Further, in this type of seedling planting device, conventionally, as shown in, for example, Patent Document 2, a seedling receiving plate that guides the protruding rail portion 18b of the lower rail 18 of the seedling mount 16 with a fitting groove 117. In some cases, the shoe 111 is configured to be detachable from both the lower rail 18 of the seedling stage 16 and the seedling extraction plate 112.

JP 2002-315413 A (paragraphs [0043]-[0045], FIGS. 1, 2, 4)

JP 2004-194573 A (paragraphs [0024]-[0026], FIG. 20-24)

In this kind of seedling planting equipment, muddy water is likely to be applied to the lower end side of the seedling platform, so replacement of parts and equipment parts such as exchanging shoes for improving the sliding of the seedling platform with respect to the guide rail for wear. Repair is becoming necessary.
When performing maintenance such as replacement or repair, in the case of adopting the seedling support structure shown in Patent Document 1, the entire seedling support is removed so that desired replacement or repair can be performed. It was necessary and time-consuming, and there was room for improvement.
In addition, even in the case of using the technique shown in Patent Document 2, if it is necessary to inspect or repair the planting machine part covered with the seedling stage or the back side of the seedling stage, It was necessary to remove the seedling stand so that it could be reached easily.

  An object of the present invention is to provide a seedling planting apparatus that can easily and efficiently perform maintenance on not only the shoe replacement described above but also the back side of the seedling platform.

In the first invention, a seedling planting mechanism that is driven so as to perform a seedling planting motion in which the tip of the seedling planting claw draws a turning trajectory and reciprocates in the vertical direction of the aircraft, and the seedling planting motion of the seedling planting mechanism In a seedling planting apparatus provided with a guide rail that is reciprocated in the lateral direction of the planting machine body in conjunction with the seedling and supplies seedlings to the seedling planting mechanism, and a guide rail that slides and acts on the lower end side of the seedling platform ,
The entire seedling platform can be rotated around the horizontal axis of the planting machine body at the upper end side of the seedling platform frame of the planting machine body that supports the upper end side of the seedling platform so as to be reciprocally movable in the lateral direction of the planting machine body. provided with a pivotal connecting portion that supports, by the whole of the seedling stage to swing vertically relative to the planting body in the planting machine body transverse axial around, the lower end portion of the seedling table is, the planting said rising opening administrative state rises away from the rotation locus of the mechanism, and are configured to switch to said lowered closed working state enters the rotational path of the seedling planting mechanism.

In other words, when the seedling stage is swung around the axis of the rotation connecting part and the lower end part of the seedling stage is in the upwardly open and managed state, the lower end part of the seedling stage becomes the rotational trajectory of the seedling planting mechanism. Since the seedling stand is swung up and away from the bottom, by swinging the seedling stand so that the lower end portion of the seedling stand is swung upward, the bottom portion of the seedling stand and the planting body are opened, and the seedling stand is opened. The planting body part where the seedling stage is located near the upper side during operation or the guided part of the seedling stage can be separated from the guide rail.

Therefore, according to the first aspect of the present invention, the lower end of the seedling stand is opened and opened without performing removal of the seedling stand when performing maintenance such as shoe replacement, inspection or repair on the back side of the seedling stand. By simply swinging the seedling platform so as to be in the management state, it is possible to easily and efficiently operate and quickly obtain a work space and a workable state so that the work can be performed easily and efficiently.

This In the second aspect, in the structure of the present first invention, provided with a guided portion to the lower portion of the seedling table, provided with a replaceable shoe between the guide rail and the guided part, the seedling stage is configured to be guided by the guide rails through the shoes, is switched to increase opening managed state the seedling stage at the lower end, nipping releasing the shoe by said guide rail and the guided portion It is configured to be.

That is, when the rising opening managing state lower end of the seedling stage, because that the guided portion of the seedling table is separated from the guide rail, by the operation of switching to the rise opening managing state lower end of the seedling stage, the shoe It is possible to switch from the working state sandwiched between the guide rail and the guided portion of the seedling platform to the open state in which the clamping by the guided portion of the guide rail and the seedling platform is released.

Therefore, according to the second aspect of the present invention, it is possible to easily and quickly change the shoe by switching to the rising and opening management state of the lower end of the seedling platform and switching to the open state of the shoe all at once. it can.

This is the third aspect, in the configuration of the first or second invention, in the locked state and the unlocked state retaining the working state closing down the seedling stage at the lower end are then switchably configured.
This is the fourth aspect, in the configuration of the third invention, the guide groove guiding surface is positioned inside that guides the guided portion provided in the guide rail, the unlocked state of the seedling table of the lower end the switching, is switched to increase opening managed state the seedling stage at the lower end, the guided portion is escaped from the guide groove, when switched to the working state to close down the seedling stage at the lower end, the guided portion Is configured to enter the guide groove.

In other words, as the lower end of the seedling platform is changed to the ascending and opening management state, the guided portion of the seedling platform is automatically pulled out of the guide groove of the guide rail, and the lower end portion of the seedling platform is lowered and closed. As it is switched, the guided portion of the seedling table naturally enters the guide groove of the guide rail.

Therefore, according to the fourth aspect of the present invention, the switching to the ascending / opening management state and the descending / closing operation state of the lower end portion of the seedling platform and the switching of the guided portion of the seedling platform with respect to the guide rail are performed at a time to perform maintenance. Opening and closing between the lower end of the seedling platform and the planting machine can be easily performed.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, a pair of left and right steering operations and driveable front wheels 1, a pair of left and right driveable rear wheels 2, a driving unit equipped with an engine 3 located at the front of the vehicle body, The seedling planting device 10 can be moved up and down via a link mechanism 7 equipped with a lift cylinder 6 at the rear part of a body frame 5 of a self-propelled vehicle body equipped with a driving unit equipped with a driver seat 4 and the like located behind the unit. And a driving force of the engine 3 is transmitted to the seedling planting device 10 via the rotating shaft 8, and a fertilizer is provided with a fertilizer tank 21 on the rear side of the driver seat 4 of the self-propelled vehicle body. The apparatus 20 is provided, and the riding type rice transplanter with a fertilizer application device is configured to perform planting work of rice seedlings and fertilization work for the planted seedlings.

  That is, when the lift cylinder 6 is operated and operated, the lift cylinder 6 swings the link mechanism 7 up and down with respect to the vehicle body frame 5, whereby the seedling planting device 10 is placed below the planting machine body 11 in the lateral direction of the planting machine body. The plurality of grounding floats 12 arranged side by side are moved up and down into a descending working state in which the grounding float 12 is grounded on the farm scene and in an ascending non-working state in which the grounding float 12 is elevated from the ground. When the seedling planting device 10 is moved down and the self-propelled vehicle body is driven, the seedling planting device 10 leveles the mud surface of the field by the respective grounding floats 12, and the planting machine body 11 is placed behind the planting machine body 11. A plurality of seedling planting mechanisms 13 arranged side by side are planted on the muddy surface that has been leveled by the ground float 12. The fertilizer application device 20 feeds granular fertilizer from the fertilizer tank 21 by a plurality of feed mechanisms 22 arranged in the lateral direction of the self-propelled machine body below the fertilizer tank 21, and each feed mechanism 22 has a discharge unit (not shown). The fertilizer fed to the seedling planting device 10 is extended from the discharge part of each feeding mechanism 22 toward the seedling planting device 10 by a fertilizer conveying wind supplied by an electric blower (not shown) provided below the driver seat 4. A plurality of crops that are fed to the fertilizer hose 23 and arranged in the horizontal direction of the planting machine so as to correspond to each seedling planting mechanism 13 of the seedling planting device 10 and dispersed in the plurality of grounding floats 12 are supported. Grooves are formed near the seedlings planted by the field mud seedling planting mechanism 13 by each of the groove fertilizers 24, and fertilizer from the fertilizer hose 23 is supplied to the grooves.

The seedling planting device 10 will be described in further detail. The seedling planting device 10 is configured as shown in FIGS.
That is, a main frame 14 made of a square tube material facing the planting machine body, a feed case 15 supported at the center of the main frame 14 in the lateral direction of the planting machine body, and the main frame 14 in the lateral direction of the planting machine body The planting machine body 11 is constituted by a planting drive case 16 extending from a plurality of locations in the rearward direction of the planting machine body, and the seedling planting mechanism 13 is provided on both sides of the rear end portion of each planting drive case 16 so as to be driven. A plurality of seedling placement portions 17a for feeding seedlings individually to the plurality of seedling planting mechanisms 13 are arranged in the lateral direction of the planting machine body above the seedling planting mechanisms 13 of the planting machine body 11 above the front side. Assembling the two seedling platforms 17 slightly inclined so that the vertical direction of the seedling platforms 17 is the vertical direction of the planting machine body and the lower end side is located on the rear side of the planting machine body A planting machine horizontal axis that is provided in a posture, provided with a guide rail 18 for a seedling table on the lower end side of the seedling table 17, and the grounding float 12 is disposed on the rear end side of the float below the planting machine body 11. They are connected so as to swing up and down.

  As shown in FIG. 3 and the like, each seedling planting mechanism 13 includes a rotary case 13b that is rotatably supported by a planting drive case 16 via a drive shaft 13a that faces the planting machine body, and the drive is provided at both ends of the rotary case 13b. A planting arm 13c rotatably supported around an axis parallel to the shaft 13a, a seedling planting claw 13d supported integrally to each planting arm 13c, and supported by each planting arm 13c to be slidably driven. The seedling pushing tool 13e is provided.

  The drive force input from the rotary shaft 8 to the feed case 15 is applied to the drive shaft 13a by a gear-use or chain-use drive mechanism or transmission mechanism (not shown) located inside the feed case 15 and the planting drive case 16. When the rotary case 13b is transmitted and rotated, and the rotary case 13b is driven to rotate, each planting arm 13c revolves around the axis of the drive shaft 13a. Each planting arm 13c is rotated and rotated with respect to the rotary case 13c by the action of a gear-based drive mechanism (not shown) located in the position.

  Thereby, each seedling planting mechanism 13 drives the drive shaft 13a, so that the tip of each seedling planting claw 13d reciprocates in the vertical direction of the planting machine body while drawing a rotation trajectory T as shown in FIG. When the tip of one seedling planting claw 13d is positioned at the upper end of the rotation trajectory T, the pair of seedling planting claws 13d reciprocate at different phases as the tip of the other seedling planting claw 13d is positioned at the lower end of the rotation trajectory T. Doing seedling planting exercises.

  As shown in FIG. 4, the mounting portion composed of the upper guide rail 31 provided on the back surface side of the part separated from the center of gravity position G of the seedling mounting base 17 by the separation length D on the upper end side of the seedling mounting base, A suspension coupling mechanism 30A is arranged at the upper end of both the struts 19a of the seedling stand frame 19 (see FIG. 3) including a pair of left and right struts 19a fixed to the main frame 14, a strut coupling rod 19b, and the like. It is supported via a connecting means having an adjusting mechanism 30B and a rotating connecting part 30C.

  As shown in FIGS. 6 and 7, the suspension coupling mechanism 30 </ b> A includes the upper guide rail 31 that is fixed to the rear surface side of the upper end portion of the seedling platform 17 and that faces the seedling platform, and the upper guide rail 31. A support roller 33 inserted into the guide groove 32 of the upper guide rail 31 at a plurality of locations in the lateral direction of the seedling mount, and the support roller 33 is rotatably supported on the front end side via the roller support shaft 34. The supporting arm 35, the interlocking rod 35a to which the roller support shaft 34 of each support arm 35 is rotatably connected, and the base end side of the support arm 35 of each support roller 33 is supported in parallel with the roller support shaft 34. A connecting leg 37a is rotatably connected to an intermediate portion via a shaft 36, and a connecting rod 37a is connected to a supporting end 19c of the support column 19a.

The upper guide rail 31 is externally fitted so as to be engaged with each support roller 33 as shown in FIG.
That is, as the support rollers 33 rotate, the upper guide rails 31 are guided by the support rollers 33 and move relative to the roller support shafts 34 in the left lateral direction and the right lateral direction of the planting machine body 11. Are in a state of being engaged with each other.

  A parallel engagement surface 33a parallel to the support roller rotation axis 34a is provided at an intermediate portion of the support peripheral surface of the support roller 33 in the direction of the support roller rotation axis 34a. A front inclined engagement surface 33b that is inclined with respect to the support roller rotating shaft core 34a so that the distance from the support roller rotating shaft core 34a becomes smaller toward the front side of the planting device body than the mating surface 33a. To the state where the distance from the support roller rotation axis 34a becomes smaller toward the rear side of the planting machine body than the parallel engagement surface 33a of the support peripheral surface of the support roller 33. A rear inclined engagement surface 33c inclined with respect to 34a is provided, and the upper guide surface and the lower guide surface of the upper guide rail 31 are provided on the parallel engagement surface 33a, the front inclined engagement surface 33b of the support roller 33, and the rear A parallel engaging surface 32a, a front inclined engaging surface 32b, and a rear inclined engaging surface 32c corresponding to the inclined engaging surface 33c are provided, and the support roller 33 and the upper guide rail 31 are the support roller rotation axis. The engaging surfaces 33a and 32a that are parallel to 34a and the engaging surfaces 33b and 32b and 33c and 32c that are inclined with respect to the support roller rotating shaft 34a are also engaged with each other.

  Thereby, the suspension coupling mechanism 30A supports the plurality of support rollers 33 arranged in the lateral direction of the planting machine body by the seedling stand frame 19 via the support arm 35 and the support rod 37, and the plurality of support rollers 33 are supported. By supporting the upper guide rail 31, the seedling stage 17 is suspended and supported at a position located on the upper end side of the seedling stage with respect to the center of gravity G, and the seedling stage 17 is supported by the seedling stage frame 19. On the other hand, it is possible to reciprocate in the horizontal direction of the planting machine.

  As shown in FIGS. 3, 7, 9, and the like, the lifting adjustment mechanism 30 </ b> B includes the upper guide rail 31, the support arm 35, the interlocking rod 35 a, and the support shaft of one support arm 35 of the plurality of support arms 35. 36 is provided with an adjusting lever 38 that is connected to 36 so as to be integrally rotatable.

  When the adjustment lever 38 is swung in the lateral direction of the planting body along the guide groove 39a of the lever guide 39 supported by the support rod 36 around the axis of the support shaft 36 in the front-rear direction of the planting machine body, The shaft 36 is rotated to swing the support arm 35. Then, because of the interlocking action by the interlocking rod 35 a, the other support arms 35 are also swung, and all the support arms 35 are moved up and down in parallel with the support rods 37 via the support rollers 33. . The adjustment lever 38 operated to a predetermined operation position is oscillated and biased by a lock spring 38a (see FIG. 6) connected to the lever 38 to a positioning recess 39b (see FIG. 8) provided in the lever guide 39. When engaged, the adjustment lever 38 is held at the operation position by the lever guide 39, and each support arm 35 is held at the swinging position corresponding to the operation position of the adjustment lever 38 against the weight of the seedling platform 17. To do.

  As a result, the lifting adjustment mechanism 30 </ b> B is configured so that the support lever 35 is supported by the support shaft 36 around the axis of the planting machine body in the front-rear direction by the adjustment lever 38 being swung and held by the lever guide 39 at the operation position after the operation. By swinging up and down and acting on the upper guide rail 31 via the support roller 33, the lifting operation force and the holding force are applied to the part located on the upper end side of the seedling stage from the center of gravity G of the seedling stage 17. Then, the raising / lowering adjustment is performed so that the seedling stage 17 is moved up and down with respect to the seedling stage frame 19 and is held in the lifting position.

  As shown in FIGS. 3 and 6, the rotating connecting portion 30 </ b> C rotates each connecting leg portion 37 a of the support rod 37 via a connecting pin 37 b with respect to the support end portion 19 c of the support column 19 a. The upper guide rail 31 as an attachment portion, which is configured by freely connecting and is located on the upper end side of the seedling platform from the center of gravity G of the seedling platform 17, is arranged on the left and right sides with respect to the seedling platform frame 19. It connects so that it may rotate around the planting machine body horizontal axis P passing through the connection pin 37b, and rotate together with the suspension connection mechanism 30A and the elevation adjustment mechanism 30B.

  On the left and right sides of the seedling support frame 19, the lock bolt is configured to be mounted over the bolt hole 40 provided in the support end 19c of the support column 19a and the bolt hole 41 provided in the connecting leg portion 37a of the support rod 37. By causing the detachable locking means 42 to act, the seedling stage 17 is configured to be locked to the seedling stage frame 19 by the locking means 42 so as not to rotate.

  As shown in FIGS. 4 and 10, the guide rail 18 is provided with a guide groove 18 a into which a guided portion 17 b provided by attaching a guided member to the back side of the lower end portion of the seedling platform 17 is inserted. It is comprised and is supported by the said planting drive case 16 of the planting machine body 11 via the support mechanism 50 provided in the both ends in the planting machine body horizontal direction of the guide rail 18. As shown in FIG.

  As shown in FIG. 10, the left and right support mechanisms 50 include a support member 51 fixed to the planting drive case 16 and a mounting rod 53 whose upper end is fixed to the guide rail 18 by a connecting bolt 52. It is.

The lower end side of the mounting rod 53 is inserted into the guide holes of the pair of upper and lower guide portions 54 of the support member 51 and is slidably locked to the support member 51, so that the guide rail 18 and the planting machine body 11 are engaged. Are engaged with each other so as not to move relative to each other in the lateral direction of the planting machine body. As a result, when the seedling platform 17 is transferred in the lateral direction of the planting machine body, the guide rail 18 is supported by the planting machine body 11 so as not to move with respect to the seedling platform 17, and the two guide surfaces 18 b in the guide groove are formed. The resin shoe 17c of the guided portion 17b is guided to guide the lower end side of the seedling stage 17 so as to move in the lateral direction of the planting machine body.
Because of the engagement between the support member 51 and the mounting rod 53 in the left and right support mechanisms 50, the guide rail 18 and the planting machine body 11 are engaged with each other so as to be relatively movable in the vertical direction of the planting machine body. . Further, the guide rail 18 and the seedling stage 17 are engaged with each other so as to be movable in the vertical direction of the planting machine body so that the guided portion 17b of the seedling stage 17 enters the guide groove 18a of the guide rail 18. It is in a state. As a result, when the seedling platform 17 is moved in the vertical direction of the planting machine body by the elevation adjustment mechanism 30 </ b> B, the guide rail 18 moves in the vertical direction of the planting machine body with respect to the planting machine body 11 together with the seedling platform 17.

  As clearly shown in FIG. 10, the guide groove 18a of the guide rail 18 is opened upward and rearward in the planting machine body, and the seedling mount 17 is placed around the lateral axis P of the rotary connecting portion 30c. 10b, the guided portion 17b of the seedling stage 17 is pulled out from the guide groove 18a upward as shown in FIG. As shown in FIG. 10 (a), the ascending / opening management state in which the lower end of the seedling platform is lifted and separated from the rotation trajectory T of the seedling planting mechanism 13 as shown in FIG. The guided portion 17b of the mounting base 17 enters the guide groove 18a from above and engages with the guide rail 18 downward, and the lower end portion of the seedling mounting base rotates the seedling planting mechanism 13 as shown in FIG. Enter the trajectory T Falling closed switched to a working state.

As shown in FIGS. 5 and 10, seedling platform locking rods 60 and bar-shaped support members 61 are provided at both ends of the seedling platform in the lateral direction on the back side of the lower end of the seedling platform 17.
Each lock rod 60 is supported by the frame portion of the seedling table 17 so as to be rotatable around the axis of the connecting bolt 62, and is locked as shown in FIG. The locked state in which the distal end side of the rod 60 enters the lower side of the end portion 18c of the guide rail 18 and the lower end side of the seedling stage 17 is lowered and closed, and the distal end of the locking rod 60 is fixed as shown in FIG. The side is disengaged from the lower side of the guide rail end portion 18c and is switched to the unlocked state in which the fixation in the descending closed working state on the lower end side of the seedling platform is released.

  Each support member 61 is rotatably connected to the frame portion of the seedling table 17 at the connecting end located on one end side of the support member 61 around the seedling table horizontal axis of the connecting part. The seedling stage 17 can be swung up and down. By swinging up and down, the seedling stage 17 hangs down from the seedling stage 17 as shown in FIG. It is switched between a use state that has entered and locked, and a storage state that is locked to the holder of the seedling table 17 in a posture along the vertical direction of the seedling table on the back side of the seedling table 17. Yes. The support member 61 that has been put into use has a guide rail 18 as a reaction member and supports the seedling stand 17 so as to support the seedling stand 17. Hold on. The support member 61 in the retracted state allows the lower end side of the seedling platform to descend and close to the working state by releasing the support for the seedling platform 17.

  As shown in FIG. 10, an L-shaped member forming a seedling stopper portion 65 is integrally formed on the lower side of the guide rail 18 in the vertical direction of the planting machine body. A notch for forming a plurality of seedling extraction ports 66 corresponding to one seedling planting mechanism 13 is provided.

  The stopper portion 65 moves the lower end portion of the mat-like seedling placed on each seedling placement portion 17a of the seedling placement stand 17 from the lower end of the seedling placement portion 17a to the rotation locus T of the seedling placement mechanism 13. The mating seedling is stopped so that it can be received and supported in a state where it protrudes by a set length. Each seedling extraction port 66 is arranged so that the tip side of the seedling planting claw 13d of the seedling planting mechanism 13 that performs seedling planting movement passes through and the block seedling is extracted from the lower end portion of the mat-shaped seedling. The stopper portion 65 is provided with a seedling guide 67 extending downward from each seedling outlet 66.

  As shown in FIGS. 3 and 4, between the feed case 15 and the seedling platform 17, the seedling horizontal feed shaft 71 extending laterally from the feedcase 15 and extending from the back side of the seedling platform 17. A seedling lateral feed mechanism 70 provided with the seedling lateral feed arm 72 and the like is provided.

  A lateral feed body 73 mounted on the seedling lateral feed shaft 71 and the seedling lateral feed arm 72 are connected so as to be movable together. The seedling horizontal feed shaft 71 is rotationally driven in conjunction with the drive of the seedling planting mechanism 13 by a drive mechanism (not shown) in the feed case 15. The lateral feed body 73 is engaged with a spiral groove (not shown) provided on the outer peripheral surface of the seedling lateral feed shaft 71, and a predetermined stroke is reciprocated along this by the seedling lateral feed shaft 71. The feed arm 72 is operated to move, and the seedling lateral feed mechanism 70 reciprocates the seedling placing table 13 in the lateral direction of the planting body in conjunction with the seedling planting movement of each seedling planting mechanism 13.

  A connection pin hole 74 (see FIG. 5) provided to connect the lateral feed body 73 to the seedling lateral feed arm 72 is allowed to allow the seedling stage 17 to be lifted and lowered by the lift adjustment mechanism 30B. It is made into a long hole so that it can be interlocked.

  As shown in FIGS. 3, 4, and 5, a seedling vertical feed belt 80 is provided on the back side of each seedling placement portion 17 a of the seedling platform 17, and is interlocked with the driving wheel body 81 of each seedling vertical feed belt 80. A seedling vertical feed mechanism 85 including a vertical feed arm 83 mounted on a seedling vertical feed shaft 82 and a pair of left and right drive arms 84 provided on the lateral outer side of the feed case 15 is provided. It is provided between the cases 15.

  When the seedling stage 17 is laterally transferred and reaches the left and right stroke ends, the vertical feed arm 83 comes into contact with the drive arm 84 corresponding to the stroke end, and the set stroke is swung by the drive arm 84. The seedling vertical feed shaft 82 is operated to drive a set rotation angle, and the seedling vertical feed shaft 82 drives each vertical feed belt 80 by a set stroke. Each time the stand 17 reaches the left and right lateral feed stroke ends, each seedling vertical feed belt 80 is driven to feed the mat-like seedlings on the seedling placement portion 17a vertically to the seedling planting mechanism 13 by a set length. . The vertical feed arm 83 is linked to the seedling vertical feed shaft 82 via a one-way rotation clutch (not shown), and when it is driven by the drive arm 84 to swing back to the standby position, The power is not transmitted to the seedling vertical feed shaft 82.

  That is, in each seedling planting mechanism 13, a pair of seedling planting claws 13 d alternately descend from the lower end side of the seedling platform 17 through the seedling extraction port 66 through the seedling guide 67 and onto the farm scene. Each seedling planting claw 13d cuts one block of seedlings from the lower end of the mat-shaped seedling placed on the seedling placement part 17a of the seedling placement stand 17 at the seedling takeout port 66 by each seedling planting claw 13d. The taken-out seedling is lowered and conveyed while being protected by the seedling guide 67 so as not to be detached from the seedling planting claw 13d. When the seedling is lowered to the field mud, it is pushed out from the seedling planting claw 13d into the mud by the seedling pushing tool 13e. And it plants by turns by the pair of seedling planting claws 13d on the same planting strip.

  In conjunction with the seedling planting movement of each seedling planting mechanism 13, while the upper end side of the seedling platform 17 is guided by the support roller 33 of the suspension coupling mechanism 30 </ b> A, the lower side of the seedling platform is guided by the guide rail 18. The seedling placing table 17 is reciprocated in the horizontal direction of the planting body by the seedling lateral feed mechanism 70, and the seedling planting claws 13d of each seedling planting mechanism 13 are sequentially moved from the lateral one end side to the other end side of the lower end portion of the mat-like seedling. Accordingly, the lower end portion of the mat-like seedling on the seedling placement portion 17a is moved along the seedling stopper portion 65 of the guide rail 18 and moved relative to the seedling extraction port 66 in the lateral direction of the planting body so that the block seedling is removed. I will let you. At this time, the seedling platform 17 moves laterally while being supported by suspension by the action of the suspension coupling mechanism 30A. Therefore, the seedling platform 17 is laterally moved in a state where the seedling platform load applied to the guide rail 18 is relatively small. Be transported.

  When the seedling stage 17 reaches the left and right lateral feed stroke ends, the seedling vertical feed shaft 82 is driven by the seedling vertical feed mechanism 85 each time, so that the seedling vertical feed belt 80 of each seedling placement part 17a is predetermined. The seedling placement mechanism 13 removes the seedlings in the vertical direction of the seedling placement mechanism 13 by rotating the stroke only and directing the matted seedlings of each seedling placement portion 17a toward the seedling stopper portion 65 of the guide rail 18 by the seedling vertical feed belt 80. Feeds vertically by the length corresponding to the amount.

  When adjusting the seedling removal amount in the vertical direction of the seedling mount by the seedling planting mechanism 13, the adjustment lever 38 is swung along the guide groove 39a of the lever guide 39, and the adjustment lever 38 positioned at the operation target position is moved. The lever guide 39 is engaged and held in the positioning recess 39b. Then, each support arm 35 of the raising / lowering adjustment mechanism 30 </ b> B moves up and down on the upper guide rail 31 of the seedling platform 17 to adjust the seedling platform 17 with respect to the seedling platform frame 19. At this time, the mounting rods 53 of the left and right support mechanisms 50 of the guide rail 18 are attached to the guide rail 18 and moved up and down with respect to the support member 51, and the guide rail 18 is attached to the seedling stand 17 to the planting machine body 11. Move up and down. Then, the seedling stopper portion 65 of the guide rail 18 moves up and down with respect to the turning trajectory T of the seedling planting mechanism 13 and the seedling planting claw 13d passes through the seedling ejection port 66, and the seedling planting claw 13d with respect to the seedling ejection port 66 The penetration depth changes. As a result, the size of the block seedlings taken out by the seedling planting mechanism 13 in the vertical direction is increased or decreased. That is, the seedling removal amount of each seedling planting mechanism 13 increases or decreases.

  When exchanging the guided portion 17b of the seedling stage 17 and the resin shoe 17c, and performing maintenance work on the back side of the guide rail 18 and the seedling stage 17, the left and right lock rods 60 on the lower end side of the seedling stage 17 are Switch to the unlocked state, release the rotation lock by the left and right locking means 41 of the rotation connecting portion 30C, and further release the connection between the seedling horizontal feed arm 72 and the horizontal feed body 73 of the seedling horizontal feed mechanism 70, The lower end side of the base 17 is lifted and swung around the lateral axis P of the rotating connecting portion 30C to be in the rising and opening management state. Then, the guided portion 17b of the seedling table 17 is exposed to be lifted and separated from the guide rail 18, and the back side of the seedling table 17 and the planting machine part covered by the seedling table 17 are normally opened. The At this time, by using the support member 61, the lower end side of the seedling platform is raised and maintained in a management state, thereby facilitating the work.

  As shown in FIGS. 11, 12, and 13, the seedling guide 67 includes a pair of left and right side guide plates 68 that are fixed to the seedling stopper portion 65 of the guide rail 18 by screwing attachment portions 68 a on the upper and lower sides. The pair of left and right side guide plates 68 includes a single center guide rod 69 having an upper end connected to the upper ends of the pair of side guide plates 68.

  The pair of left and right side guide plates 68 and the center guide rod 69 are produced by integral molding of a resin material, and the entire seedling guide 67 is an integral part.

  The center guide rod 69 is inserted between the pair of left and right seedling planting claws 13d of the planting arm 13c so that the seedling planting claws 13d can support the seedlings held by the planting arm 13c. It is configured in an arm shape having a slightly narrower width than the interval of the center guide rod 69, and is arranged so as to enter deeper inside the turning locus T of the seedling planting claw 13d toward the lower end side of the center guide rod 69. is there. On the upper end side of the side guide plate 68, a connecting rod 68b is provided which is positioned on the outer side of the seedling guide with respect to the center guide rod 69 and connects the left and right side guide plates 68.

Direction indicators 90 are provided on both lateral sides of the seedling platform 17.
As shown in FIGS. 14 and 15, the left and right direction indicators 90 are provided with a lamp housing recess 91 on the side wall 17 e located at the most lateral end of the seedling table 17, and a light bulb 92 disposed in the lamp housing recess 91, And the lens 93 which covers the lamp | ramp accommodation recessed part 91 is comprised by mounting | wearing the side wall 17e.

  As shown in FIGS. 14 and 15, positioning protrusions 92 a are provided at two locations on the outer peripheral surface of the assembly shaft portion of the light bulb 92. When assembling the light bulb 92, each positioning protrusion 92a enters the upper side of the light bulb support portion 94 from the notch 95 of the light bulb support portion 94 of the lamp housing recess 92 and elastically deforms the seal material 96, while taper protrusion of the light bulb support portion 94. Overcoming 97. One positioning protrusion 92a gets over the taper protrusion 97 and then comes into contact with the stopper protrusion 98 to recognize that the light bulb 92 has reached a predetermined assembly position. Further, the positioning protrusion 92 a that has entered between the taper protrusion 97 and the stopper protrusion 98 prevents the light bulb 92 from coming off by hitting the taper protrusion 97 and the stopper protrusion 98.

  As shown in FIG. 17, a reinforcing rod 100 is provided on the back side of the seedling table 17 along the width direction of the seedling table 17. The reinforcing rod 100 is formed to include a cord receiving groove 101 along the reinforcing rod 100 and a connecting piece portion 102 located on both sides of the cord receiving groove 101, and the opening of the cord receiving groove 101 is the seedling platform 17. Are connected to the seedling stage 17 by the pair of connecting pieces 102 in a closed assembly state. An electric cord 103 for the direction indicator 90 or the like is wired so as to be accommodated in the cord accommodation groove 102 on the back surface side of the seedling platform 17.

  As shown in FIG. 18, the main frame 14 of the planting machine body 11 has an electric wire receiving groove 106 formed on the lower surface side of the main frame 14 so as to open downward in the planting machine body, and an electric wire 107 in the electric wire receiving groove 106. Is provided with a clamp 109 that is detachably secured to a locking portion 108 located on both sides of the wire receiving groove 106. The clamps 109 are arranged at a plurality of locations in the horizontal direction of the planting machine body of the main frame 14.

Overall side view of riding rice transplanter with fertilizer application Overall plan view of riding rice transplanter with fertilizer application Top view of planting aircraft Side view of the seedling stand when it is lowered and closed Side view of the seedling stand in the rising and opening management state Side view of suspension connection mechanism, lift adjustment mechanism, rotation connection part Front view of the lifting adjustment mechanism Top view of the lever guide for the adjustment lever Side view of support roller arrangement part of hanging connection mechanism (B) is a side view of the seedling stand at the lower end side in the descending and closing operation state, (b) is a side view of the seedling stand at the lower end side of the raising stand management state Side view of seedling guide Top view of seedling guide FIG. 11 is a cross-sectional view taken along the line AA in FIG. Vertical section of direction indicator Top view of the light bulb installation part of the direction indicator A perspective view of a light bulb and a light bulb support part of a direction indicator Perspective view at the reinforcement pad arrangement part of the seedling stand Cross section of planting machine main frame

DESCRIPTION OF SYMBOLS 11 Planting machine body 13 Seedling planting mechanism 13d Seedling planting claw 17 Seedling placing stand 17b Guided portion 17c Shoe 18 Guide rail 18a Guide groove 18b Guide surface
19 Seedling stand frame
30C Rotation connecting part T Rotation locus
P Planting machine horizontal axis

Claims (4)

Seedling planting mechanism driven to perform seedling planting movement in which the tip of the seedling planting claw draws a turning trajectory and reciprocates in the vertical direction of the machine body, and in the lateral direction of the planting machine in conjunction with the seedling planting movement of the seedling planting mechanism A seedling mounting device that is reciprocally transferred and supplies seedlings to the seedling planting mechanism, a seedling planting device provided with a guide rail that slides and acts on the lower end side of the seedling mounting table,
The entire seedling platform can be rotated around the horizontal axis of the planting machine body at the upper end side of the seedling platform frame of the planting machine body that supports the upper end side of the seedling platform so as to be reciprocally movable in the lateral direction of the planting machine body. provided with a pivotal connecting portion that supports, by the whole of the seedling stage to swing vertically relative to the planting body in the planting machine body transverse axial around, the lower end portion of the seedling table is, the planting wherein a raised opening administrative state rises away from the rotation locus, the seedling planting device that is configured to switch to the lowered closed working state entering into the rotational path of the seedling planting mechanism mechanisms. A guided portion is provided at a lower end portion of the seedling table, a replaceable shoe is provided between the guide rail and the guided portion, and the seedling table is guided to the guide rail through the shoe. Configure
The seedling planting apparatus according to claim 1, wherein when the lower end portion of the seedling mount is switched to the rising and opening management state, the holding of the shoe by the guide rail and the guided portion is released.   The seedling planting apparatus according to claim 1, wherein the seedling planting apparatus is configured to be switchable between a locked state and a unlocked state in which a lower end portion of the seedling platform is lowered and held in a working state. The guide rail is provided with a guide groove in which a guide surface for guiding the guided portion is located,
When the lower end of the seedling platform is switched to the unlocked state, and the lower end of the seedling platform is switched to the rising and opening management state, the guided portion comes out of the guide groove,
The seedling planting apparatus according to claim 3, wherein the guided portion is configured to enter the guide groove when the lower end portion of the seedling platform is lowered and closed to the working state.

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