JP4046639B2 - Seedling planting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention has a plurality of seedling placement units arranged in the horizontal direction of the machine body and is reciprocated in the horizontal direction of the machine body in conjunction with the seedling planting movement of the seedling planting mechanism, A seedling vertical feed shaft that is movably attached, and is located at the most lateral end of the seedling platform among the plurality of seedling platforms.Horizontal one end sideSeedling placement part and thisHorizontal one end sideAdjacent to the seedling placement partHorizontal endA one-way clutch that is arranged between adjacent seedling placement parts and attached to the seedling vertical feed shaft, and the operation part comes into contact with the input part of the one-way clutch as the seedling stand reaches the left and right lateral feed stroke ends. The present invention relates to a seedling planting device including a longitudinal feed drive shaft that is supported by a feed case so as to be able to rotate the seedling longitudinal feed shaft by transmitting power.
[0002]
[Prior art]
  For example, when the feed case is provided so as to be positioned at the center of the machine body in the lateral direction and the vertical feed drive shaft is provided so as to protrude laterally from the feed case, 4 or 5 are provided on the seedling stand. Depending on the number of seedling placement units to be provided on the seedling placement platform, such as providing a seedling placement unit, vertical feed drive is performed each time the seedling placement platform moves laterally corresponding to the width of one seedling placement unit. The one-way clutch is the most of the plurality of seedling placement parts of the seedling mounting base because it is necessary to configure the shaft operation part to contact the input part of the one-way clutch of the seedling vertical feed shaft and transmit power. Located on the side of the seedling standHorizontal one end sideSeedling placement part and thisHorizontal one end sideAdjacent to the seedling placement partOne endIt attaches to a seedling vertical feed shaft in the state arrange | positioned between adjacent seedling mounting parts. Regardless of the shape and arrangement of the feed case, the vertical feed drive shaft is coaxially aligned with the driveable seed feed horizontal feed shaft that reciprocally moves the seedling platform in the horizontal direction of the machine body, and is connected to be integrally rotatable. In this case, depending on the number of seedling placement units provided in the seedling platform, the one-way clutch is located at the most lateral side of the seedling platform among the plurality of seedling platforms of the seedling platform.Horizontal one end sideSeedling placement part and thisHorizontal one end sideAdjacent to the seedling placement partOne endIt attaches to a seedling vertical feed shaft in the state arrange | positioned between adjacent seedling mounting parts.
  In the seedling planting apparatus, the one-way clutch is thus located at the most lateral side of the seedling platform among the plurality of seedling platforms of the seedling platform.Horizontal one end sideSeedling placement part and thisHorizontal one end sideAdjacent to the seedling placement partOne endIt arrange | positions between adjacent seedling mounting parts, and is attached to the seedling vertical feed shaft.
[0003]
  In the seedling planting device, the seedling standHorizontal one end sideSeedling placement part and saidOne endA vertical feed clutch is provided to switch the transmission from the seedling vertical feed shaft to the seedling vertical feed belt of the adjacent seedling placement section between the on state and the off state, even if the seedling platform reaches the lateral feed stroke end.Horizontal one end sideSeedling placement part andOne endIn the adjacent seedling placement part, the vertical feed clutch for both seedling placement parts is turned off so that the seedling vertical feed belt is not driven and the seedling vertical feed is not performed,Horizontal one end sideSeedling planting mechanism corresponding to the seedling placement partOne endTo stop sowing seedlings by another seedling planting mechanism while stopping 2 seedlings planting by the seedling planting mechanism corresponding to the adjacent seedling placement part, so-called fractional planting work can be performed Composed.
[0004]
  For this reason, conventionally, as shown in Patent Document 1, for example,Horizontal one end sideA first edge clutch 17Ea (corresponding to a longitudinal feed clutch) is attached to the seedling vertical feed shaft 17C at the lateral end opposite to the side where the one-way clutch 17c is located, of both lateral ends of the seedling placement portion. From the seedling vertical feed shaft 17C by the one-edge clutch 17EaHorizontal one end sideIt is configured to turn on and off the transmission to the first vertical feeding belt 17Aa (corresponding to the seedling vertical feeding belt) of the seedling placement portion.One endAt the lateral end opposite to the side where the one-way clutch 17c is located, the second edge clutch 17Eb (corresponding to the longitudinal feed clutch) is attached to the seedling longitudinal feed shaft 17C at both lateral ends of the adjacent seedling placement portion. From the seedling vertical feed shaft 17C by the second saddle clutch 17EbOne endThere was one configured to turn on and off the transmission to the second vertical feed belt 17Ab (corresponding to the seedling vertical feed belt) of the adjacent seedling placement portion.
[0005]
[Patent Document 1]
      JP 2001-95329 A (paragraph numbers [0033]-[0034], FIG. 3, FIG. 10)
[0006]
[Problems to be solved by the invention]
  When adopting the above conventional clutch mounting technology,Horizontal one end sideA longitudinal feed clutch that acts on the seedling longitudinal feed belt of the seedling placement section;One endThe longitudinal feed clutch that acts on the seedling longitudinal feed belt of the adjacent seedling placement portion is separated in the lateral direction of the seedling placement base. For this reason,Horizontal one end sideA vertical feed clutch of the seedling placement section;One endWhen linking the vertical feed clutch of the adjacent seedling placement part to the same operation tool so that it can be switched at once with this operation tool, it extends from the operation tool toward the clutch, and is connected to two branch cables on the way Branch off and one branch cableHorizontal one end sideConnected to the vertical feed clutch of the seedling placement part, the other branch cableOne endCost and structure, such as the need to use a two-pronged operation cable that is configured to connect to the vertical clutch of the adjacent seedling placement section, or that requires a long operation cable for each branch cable An interlocking mechanism that would be disadvantageous was needed.
[0007]
  The purpose of the present invention is toHorizontal one end sideSeedling placement part andOne endA seedling planting device that is advantageous in terms of structure and cost from the standpoint of a mechanism that interlocks the vertical feed clutch with the operation tool while being able to operate the seedling vertical feed belt of the adjacent seedling placement section all at once with the same operation tool Is to provide.
[0008]
[Means for Solving the Problems]
  The configuration, operation, and effect of the invention according to claim 1 are as follows.
[0009]
〔Constitution〕
  It has a plurality of seedling placement parts arranged in the horizontal direction of the machine body and is attached to the back side of the seedling table so that it can be rotated back and forth in the horizontal direction in conjunction with the seedling planting movement of the seedling planting mechanism. The seedling vertical feed shaft, located at the most lateral end of the seedling mounting base among the plurality of seedling mounting portionsHorizontal one end sideSeedling placement part and thisHorizontal one end sideAdjacent to the seedling placement partOne endA one-way clutch that is placed between adjacent seedling placement parts and attached to the seedling vertical feed shaft, and an operation part is applied to the input part of the one-way clutch as the seedling placement base reaches the left and right lateral feed stroke ends. A seedling planting device comprising a longitudinal feed drive shaft that is supported by a feed case so as to be able to rotate the seedling longitudinal feed shaft by contacting and transmitting power,
  SaidHorizontal one end sideVertical feed belt for seedling placementWinding belt pulleyA vertical feed clutch for transmitting the power of the seedling vertical feed shaft, andOne endSeedling vertical feed belt of adjacent seedling placement partWinding belt pulleyThe vertical feed clutch for transmitting the power of the seedling vertical feed shaft is distributed to both lateral sides of the one-way clutch and attached to the seedling vertical feed shaft in the vicinity of the one-way clutch, and the both vertical feeds The clutch operation unit is linked to the same operation tool.A belt pulley for winding a seedling vertical feed belt of a lateral other end side seedling placing portion opposite to the lateral one end side seedling placing portion, and the other end adjacent to the lateral other end side seedling placing portion A belt pulley that winds the seedling vertical feed belt of the side adjacent seedling placement portion is connected to a coaxial cylindrical tube shaft, and the seedling vertical feed shaft is connected to the belt pulley of the other end side seedling placement portion. One vertical feed clutch for transmitting power is attached to the seedling vertical feed shaft on the one-way clutch side, and the operation unit of the vertical feed clutch is interlocked with an operation tool different from the operation tool, thereby An intermediate portion of the belt pulley of the lateral one end side seedling placement part that exceeds the longitudinal feed clutch with respect to the lateral one end side seedling placement part disposed in proximity to the one-way clutch, and the other end side adjacent seedling The vertical feed clutch provided for the belt pulley of the mounting part is super And corresponds to the distance between the other end middle portion of the belt pulleys of the adjacent seedling mounting portion is set to length.
[0010]
  [Action]
  Horizontal one end sideVertical feed belt for seedling placementWinding belt pulleyA vertical feed clutch that transmits the power of the seedling vertical feed shaft,One endSeedling vertical feed belt of adjacent seedling placement partWinding belt pulleyThe vertical feed clutch that transmits the power of the seedling vertical feed shaft is distributed to both sides of the one-way clutch and attached to the seedling vertical feed shaft close to the one-way clutch, and the operation part of the double vertical feed clutch Are connected to the same operation tool, so that the operation parts of both vertical feed clutches are provided close to each other, and the same operation cable is connected to both operation parts, and one operation cable is used. It is possible to link the operation parts of both vertical feed clutches to the same operation tool by using interlocking means that is simpler than the conventional structure, such as linking both vertical feed clutches to the same operation tool. By operating, both vertical feed clutches enter the state, and the operation part of the vertical feed drive shaft inputs the one-way clutch as the seedling platform reaches the lateral feed stroke end. When seedlings longitudinal feed axis is operated to rotate in contact,Horizontal one end sideAlso in the seedling placement partOne endAlso in the adjacent seedling placement partBy belt pulleyThe vertical feed drive shaft is operated when the seedling vertical feed belt is driven or both vertical feed clutches are turned off and the seedling platform reaches the end of the horizontal feed stroke. Even if the part contacts the input part of the one-way clutch and the seedling vertical feed shaft is rotated,Horizontal one end sideAlso in the seedling placement partOne endEven in the adjacent seedling placement section, the seedling vertical feeding belt is not driven, and the seedling vertical feeding is not performed.
[0011]
〔effect〕
  Therefore, even if the seedling stand reaches the end of the lateral feed strokeHorizontal one end sideSeedling placement part andOne endIn the adjacent seedling placement part, the seedling vertical feed belt is not driven and the seedling vertical feed is not performed,Horizontal one end sideSeedling planting mechanism corresponding to the seedling placement partOne endWhile stopping the two seedlings planted by the seedling planting mechanism corresponding to the adjacent seedling placement unit, the fractional row planting operation for performing seedling planting by another seedling planting mechanism can be performed. Moreover,Horizontal one end sideWith the vertical feed clutch of the seedling placement partOne endThe vertical feed clutch of the adjacent seedling placement part can be operated at once by the same operation tool, and switching can be performed easily. On the other hand, a simple interlocking means such as a single operation cable is used as a means for interlocking both longitudinal feed clutches with the same operating tool, and it can be obtained at low cost and with a simple structure.
[0012]
  The structure, operation, and effect of the invention according to claim 2 are as follows.
[0013]
〔Constitution〕
  In the configuration of the invention according to claim 1, it is supported by the feed case so as to be freely driven, and engages with a lateral feed operation portion of the seedling mounting table so that the seedling mounting table is interlocked with the seedling planting movement of the seedling planting mechanism. The transverse feed drive shaft that reciprocates in the transverse direction of the machine body and the longitudinal feed drive shaft are arranged coaxially and connected so as to be integrally rotatable.
[0014]
  [Action]
  In the configuration in which the lateral feed drive shaft and the longitudinal feed drive shaft are supported separately by the feed case, an interlocking mechanism for interlocking the input shaft of the feed case with one of the lateral feed drive shaft and the longitudinal feed drive shaft, Both drive shafts can be driven by providing both interlocking mechanisms of the interlocking mechanism that interlocks the drive shaft with the other drive shaft inside the feed case. In the present invention, however, the lateral feed drive shaft and the longitudinal feed drive Since the shafts are arranged coaxially and are connected so as to be rotatable together, the feed case only has an interlocking mechanism that interlocks the input shaft of the feed case with either the lateral feed drive shaft or the longitudinal feed drive. Both drive shafts can be driven.
[0015]
〔effect〕
  Accordingly, it is possible to reduce the number of interlocking mechanisms that need to be provided in the feed case and to reduce the size of the feed case, thereby reducing the weight and cost.
[0016]
  The structure, operation, and effect of the invention according to claim 3 are as follows.
[0017]
〔Constitution〕
  In the configuration of the invention according to claim 2, the transverse feed drive shaft and the longitudinal feed drive shaft are connected outside the feed case.
[0018]
  [Action]
  For example, in the case of a thing provided with a seedling placing stand having four seedling placement parts and a case equipped with a seedling placing stand having five seedling placing parts, the width of the whole seedling placing base is different, and the feed case and the one way The clutch interval is different. For this reason, two types of vertical feed drive shafts with different lengths are prepared, and the method of selecting the vertical feed drive shaft of the length suitable for the seedling stand and connecting it to the lateral feed drive shaft is adopted. Then, the seedling planting apparatus in which the number of planting strips is different can be obtained only by preparing one type of lateral feed drive shaft and feed case. At this time, since the transverse feed drive shaft and the longitudinal feed drive shaft are connected outside the feed case, the feed case can be assembled without disassembling the feed case when assembling the longitudinal feed drive shaft with an appropriate length. This can be done by connecting to the lateral feed drive shaft outside.
[0019]
〔effect〕
  Therefore, when assembling a seedling planting device with a different number of planting lines while using a common vertical drive shaft and feed case, assembly of the vertical feed drive shaft of a length suitable for the model requires disassembly of the feed case. It can be done efficiently and can be assembled efficiently.
[0020]
  The configuration, operation, and effect of the invention according to claim 4 are as follows.
[0021]
〔Constitution〕
  In the configuration of the invention according to claim 2 or 3, a cylindrical shaft portion into which an end portion of the longitudinal feed drive shaft enters is integrally formed at an end portion of the lateral feed drive shaft, and the cylindrical shaft portion and the longitudinal feed drive shaft are extended. A connecting pin is provided which is attached and connects the laterally-feeding drive shaft and the longitudinal-feeding drive shaft so as to be integrally rotatable and in a retaining state.
[0022]
  [Action]
  Adopting the cylindrical shaft part integrally molded at the end of the transverse feed drive shaft, and a connecting pin mounted across the tubular shaft part and the longitudinal feed drive shaft to connect the transverse feed drive shaft and the longitudinal feed drive shaft Therefore, both drive shafts can be connected without requiring a special joint configured to be mounted across the transverse feed drive shaft and the longitudinal feed drive shaft.
[0023]
〔effect〕
  Therefore, although the transverse feed drive shaft and the longitudinal feed drive shaft are connected so as to be integrally rotatable, it is possible to omit a special joint and to reduce the labor of the connection work or to obtain it at a low cost.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
  [First Embodiment]
  As shown in FIG. 1 and FIG. 2, the vehicle is self-propelled by a pair of left and right steering operations and a front wheel 1 that can be driven and a pair of left and right drive wheels 2 and is equipped with an engine 9a and an engine bonnet 9b. In the rear part of the body frame 10 of the self-propelled machine body equipped with the spare seedling storage device 7 located on both sides of the driving part 9 and the driving part 3 equipped with the driving seat 8 located behind the engine bonnet 9b, The seedling planting device 20 is connected via the link mechanism 4 equipped with the lift cylinder 5, and the engine output of the self-propelled aircraft is transmitted to the seedling planting device 20 via the rotating shaft 6. A fertilizer application device 30 equipped with a fertilizer tank 31 is provided on the rear side of the driver's seat 8 of the traveling machine body to constitute a rice transplanter with a riding type fertilizer application device.
[0025]
  That is, when the lift cylinder 5 is driven and operated, the lift cylinder 5 swings the link mechanism 4 up and down with respect to the body frame 10 and the seedling planting device 20 is grounded by the grounding float 24 on the field scene. The ascending / descending operation is performed between the descending work state and the ascending non-working state in which the grounding float 24 is raised above the ground. When the seedling planting device 20 is moved down and the self-propelled aircraft is run, the plurality of seedling planting mechanisms 22 arranged in the lateral direction of the seedling planting device 20 are alternately placed by the pair of planting arms 23. One block of seedling is taken out from the mat-like seedling placed on the table 25 and planted on the field scene after the ground float 24 is leveled.
[0026]
  The fertilizer application device 30 extends backward from a plurality of fertilizer feeding devices 32 connected to the lower portion of the fertilizer tank 31 side by side in the lateral direction of the self-propelled aircraft, and from the fertilizer delivery section of each fertilizer feeding device 32. A plurality of works supported by the grounding float 24 in such an arrangement that the extended end portions are arranged in the lateral direction of the body of the seedling planting device 20 and are located one by one near the lateral side of the seedling planting mechanism 20. A fertilizer supply hose 33 separately connected to the groove fertilizer 29 and an electric blower 34 for supplying fertilizer conveying air to each fertilizer feeding device 32 are provided, and the seedling planting device 20 performs seedling planting work. Accordingly, the granular fertilizer stored in the fertilizer tank 31 is fed from the fertilizer tank 31 by each fertilizer feeding device 32, and the fed fertilizer is passed through the fertilizer supply hose 33 by the fertilizer conveying wind from the electric blower 34. Sakumizo supplied to the fertilizer application equipment 29. Each grooving fertilizer 29 forms a groove in the field on the side of the seedling planted by the seedling planting mechanism 22 and supplies fertilizer from the fertilizer supply hose 33 to this groove.
[0027]
  The seedling planting apparatus 20 will be described in further detail as follows.
  As shown in FIGS. 3, 4, 5, etc., the main frame 40 made of a square steel pipe facing the body of the seedling planting device 20 is arranged so as to be positioned at the center in the lateral direction of the seedling planting device body. A seedling planting device by a feed case 41 connected at the front to the center in the longitudinal direction of the main frame 40 and a planting transmission case 42 extending from both ends of the main frame 40 toward the rear of the machine body. 20 main body frames, the seedling planting mechanism 22 is attached to both lateral sides of the rear end portion of each planting transmission case 42, and the driving force of the rotating shaft 6 is used as the main frame 40 of the feed case 41. Is transmitted to the input shaft 43 passing through the transmission shaft cover, and the transmission shaft cover is connected to the rear end portion of the input shaft 43 by the bevel gear mechanism 44 from the lateral output shaft 45.
Is transmitted to an input shaft 48 located at the front end of the planting transmission case 42 via a transmission shaft 47 located inside the planting 46, and seedling planting is performed from this input shaft 48 via a transmission chain 49 in the planting transmission case 42. By transmitting to the rotary drive shaft 26 of the mechanism 22, the seedling planting mechanism 22 is driven.
[0028]
  As shown in FIG. 3 and the like, each seedling planting mechanism 22 includes a rotary case 27 that is driven by the rotary drive shaft 26 so as to rotate around the axis of the rotary drive shaft 26 facing the machine body, and the rotary case. 27. The planting arm 23 is rotatably provided at both ends of the rotary 27. When the rotary case 27 is rotationally driven, each planting arm 23 is rotated around the rotational axis of the rotary case 27. While revolving, a driving mechanism (not shown) located inside the rotary case 27 is driven to rotate and rotate with respect to the rotary case 27, and a planting claw 28 provided on one planting arm 23 is provided. 7, the planting claws 28 provided on the other planting arm 23 are alternately cut away as shown in FIG. 7 of the sliding guide rail 21 located on the lower end side of the seedling table 25. That a seedling outlet 21a, which is between the field surface to seedling planting movement to reciprocate while drawing a long rotation path to the body vertically.
[0029]
  The seedling platform 25 is a single seedling platform having a plurality of seedling platforms 25a to 25d arranged in the lateral direction of the seedling platform so as to supply seedlings individually to the plurality of seedling planting mechanisms 22. It is configured. The seedling support 25 is supported by the sliding guide rail 21 supported by the machine frame so as to slide in the lateral direction of the seedling planting machine body along the sliding guide rail 21. is there.
[0030]
  As shown in FIG. 4, the seedling planting machine body sideways lateral feed drive shaft 51 that is rotatably mounted across the upper end portion of the feed case 41 and a holder 40 a fixed to one end side of the main frame 40, The seedling lateral feed mechanism 50 is configured by including a lateral feed operation unit 52 that is provided with a frame holder fixed to the back side of a portion that is displaced to the lateral one end side from the center in the lateral direction of the seedling platform 25. .
[0031]
  As shown in FIG. 4 and the like, the feed case 41 is placed on a portion of the lateral feed drive shaft 51 located inside the feed case 41 via a lateral feed speed change mechanism 53 equipped with two transmission chains 53a. The output shaft 45 is interlocked. A spiral feed groove 51a is provided on the outer peripheral surface of a portion of the lateral feed drive shaft 51 that protrudes from the feed case 41, and sliding and relative rotation are performed on a portion of the lateral feed drive shaft 51 located outside the feed case. Since a top member 52a engaged with the spiral feed groove 51a is provided at the end of the lateral feed operation portion 52 that is freely fitted, the outer portion of the feed case of the lateral feed drive shaft 51 is laterally extended. The feed operation unit 52 is engaged so as to feed.
[0032]
  That is, the seedling lateral feed mechanism 50 is a part in the feed case of the lateral feed drive shaft 51 from the output shaft 45 of the feed case 41 via the lateral feed speed change mechanism 53 as the seedling planting mechanism 22 performs the seedling planting motion. The transverse feed drive shaft 51 is driven to rotate in one rotation direction by the driving force transmitted to the horizontal feed drive shaft 51, and the transverse feed operation unit 52 is moved along the transverse feed drive shaft 51 by the rotating transverse feed drive shaft 51. By reciprocating, the seedling placing table 25 is reciprocated in the lateral direction of the seedling planting device body with a stroke substantially equal to the lateral width of one seedling placement unit 25a to 25d as a transfer stroke. That is, the mat-like seedling to be supplied to the seedling planting mechanism 22 moves laterally with respect to the seedling outlet 21a corresponding to the seedling planting mechanism 22, and the planting claws 28 of the seedling planting mechanism 22 are matted. The seedling placement units 25a to 25d are separated from the corresponding seedling takeout port 21a so as to cut and take out one block of block seedlings sequentially from the lateral one end side to the other end side of the seedling. Move back and forth in the horizontal direction.
[0033]
  The lateral feed speed change mechanism 53 shifts the driving force of the output shaft 45 in two stages, high speed and low speed, and transmits it to the lateral feed drive shaft 51 to change the drive speed of the lateral feed drive shaft 51. The lateral feed speed of the seedling placing stand 25 is changed so that the size of the block seedlings for one stock taken out from the mat-like seedlings by each seedling planting mechanism 22 changes in two sizes. Is.
[0034]
  As shown in FIGS. 2 and 8 and the like, a seedling vertical feed belt 61 composed of a pair of endless belts arranged in the width direction of the seedling platform is provided on the lower end side of each of the seedling placement units 25a to 25d of the seedling platform 25. The seedling vertical feed belt 61 receives and supports the mat-like seedlings placed on the seedling placement units 25a to 25d from below, and is driven in a predetermined direction so as to place the seedlings. The mat-like seedlings on the upper part are vertically fed along the seedling placement parts 25a to 25d toward the seedling taking-out port 21a.
[0035]
  As shown in FIGS. 8 to 12, the seedling vertical feed shaft 62 formed of a hexagonal shaft facing the seedling platform, which is rotatably attached to the back surface on the lower end side of the seedling platform 25, the plurality of seedling placement units 25 a to 25- A partition wall between the right lateral end seedling placement portion 25a located at the rightmost lateral end of the seedling placement stand of 25d and the right adjacent seedling placement portion 25b adjacent to the right lateral end seedling placement portion 25a A one-way clutch 63 in which an output-side rotator 63b is attached to one end of the seedling vertical feed shaft 62 at a portion located on the back side of 25f so as to be integrally rotatable, and distributed to both sides of the one-way clutch 63; A pair of right vertical feed clutches 70a, 70a attached to the seedling vertical feed shaft 62 in proximity to the one-way clutch 63; a left vertical feed clutch 70b attached to the other end of the seedling vertical feed shaft 62; the feed case 41; The main frame It includes a longitudinal feeding drive shaft 64 over the support arms 40c of the fixed guard rod 40b fitted seedlings planting apparatus body sideways extending from the other end of the 40, have configured Naetate feed mechanism 60.
[0036]
  As shown in FIGS. 10 and 11, the pair of right vertical feed clutches 70 a and 70 a and the left vertical feed clutch 70 b are slidably fitted to the seedling vertical feed shaft 62 and the seedling vertical feed shaft 62. Because of the hexagonal shape, the movable side clutch body 71 that is engaged with the seedling vertical feed shaft 62 so as to be integrally rotatable is one seedling vertical part of the pair of seedling vertical feed belts 61 of the seedling placement portions 25a to 25d. The fixed side clutch body 72 and the movable side clutch body 71, which are part of the mounting cylinder portion 65a of the belt pulley 65 around which the transport belt 61 is wound, are slidably biased toward the fixed side clutch body 72. The intermediate biasing spring 73 is connected to a support bracket 74 fixed to the seedling mount 25 so that an intermediate portion thereof is pivotable around an axis 75 a, and a fork portion 75 b on one end side is connected to one end side of the movable clutch body 71. The operating part 75 engaged When the operating portion 75 is swung around the shaft core 75 a, the movable clutch body 71 slides toward the fixed clutch body 72 due to the energizing spring 73. The clutch claw 71a is engaged with the fixed clutch body 72, or the movable clutch body 71 is slid against the biasing spring 73 due to the swinging operation force of the operating portion 75. Thus, the clutch pawl 71a is disengaged from the stationary clutch body 72.
[0037]
  As shown in FIGS. 8 and 10, the belt pulley 65 wound around the conveying terminal end of each of the pair of seedling vertical feed belts 61 in the right lateral end seedling placing portion 25 a is attached to the mounting cylinder portion 65 a of each belt pulley 65. Are coupled together by a cylindrical shaft 66 which is externally fitted so as to be rotatable relative to the seedling vertical feed shaft 62. As a result, of the pair of right vertical feed clutches 70a attached to the seedling vertical feed shaft 62 separately on both lateral sides of the one-way clutch 63, the outer right vertical position located toward the right lateral end seedling placement portion 25a. When the feed clutch 70a is switched to the on state, the power of the seedling vertical feed shaft 62 is transmitted to the pair of seedling vertical feed belts 61 of the right lateral end seedling placement portion 25a by the outer right vertical feed clutch 70a. Then, when the outer right vertical feed clutch 70a is switched to the disengaged state, the pair of seedling vertical feed belts 61 and the seedling vertical feed shaft 62 of the right lateral end seedling placement portion 25a are disconnected, and the seedling The vertical feed shaft 62 rotates relative to the pair of seedling vertical feed belts 61 of the right lateral end seedling placement portion 25a.
[0038]
  As shown in FIGS. 8 and 10, the belt pulley 65 wound around the conveying terminal end of each of the pair of seedling vertical feed belts 61 in the right adjacent seedling placement portion 25 b is in relation to the mounting cylinder portion 65 a of each belt pulley 65. Are coupled to each other by a cylindrical shaft 66 that is externally fitted to the seedling vertical feed shaft 62 so as to be relatively rotatable. As a result, of the pair of right vertical feed clutches 70a attached to the seedling vertical feed shaft 62 separately on both lateral sides of the one-way clutch 63, the inner right vertical feed located toward the right adjacent seedling placement portion 25b. When the clutch 70a is switched to the engaged state, the power of the seedling vertical feed shaft 62 is transmitted to the pair of seedling vertical feed belts 61 of the right adjacent seedling placement portion 25b by the inner right vertical feed clutch 70a. When the inner right vertical feed clutch 70a is switched to the disengaged state, the pair of seedling vertical feed belts 61 and the seedling vertical feed shaft 62 of the right adjacent seedling placement portion 25b are disconnected, and the seedling vertical feed shaft 62 rotates relative to the pair of seedling vertical feed belts 61 of the right adjacent seedling placement portion 25b.
[0039]
  As shown in FIGS. 9, 11, and 12, the other two seedlings except the right lateral end seedling placing part 25 a and the right adjacent seedling placing part 25 b among the plurality of seedling placing parts 25 a to 25 d. In the left lateral end seedling placement part 25d that is the placement part, which is located at the leftmost end of the seedling stand, and in the left adjacent seedling placement part 25c adjacent to the left lateral end seedling placement part 25d, each seedling placement The belt pulleys 65 wound around the conveyance end sides of the four seedling longitudinal feed belts 61 located two at each of the placement portions 25c and 25d are integrally rotatable with respect to the mounting cylinder portion 65a of each belt pulley 65. And is connected to the seedling vertical feed shaft 62 so as to be integrally rotated by a cylindrical shaft 66 that is externally fitted so as to be relatively rotatable. Thereby, when the left vertical feed clutch 70b is switched to the on state, the power of the seedling vertical feed shaft 62 is also applied to the pair of seedling vertical feed belts 61 of the left adjacent seedling placement portion 25c by the left vertical feed clutch 70b. When the left vertical feed clutch 70b is switched to the disengaged state, the left adjacent seedling placement portion 25c and the left are also transmitted to the pair of seedling vertical feed belts 61 of the left lateral end seedling placement portion 25d. The pair of seedling vertical feed belts 61 and the seedling vertical feed shaft 62 of each of the lateral end seedling placement 25d is disconnected, and the seedling vertical feed shaft 62 is connected to the pair of seedling vertical feed belts 61 of the left adjacent seedling placement portion 25c. In contrast, the pair of seedling vertical feed belts 61 on the left lateral end seedling placement 25d also rotate relative to each other.
[0040]
  As shown in FIG. 10, the operation part 75 of each of the pair of right vertical feed clutches 70 a is an intermediate part connected to the support bracket 74, and includes a conveyance side part and a return side part of the seedling vertical feed belt 61. It is supported by the support bracket 74 in a state where it is in between.
[0041]
  As shown in FIG. 5, the longitudinal feed drive shaft 64 is engaged with the transverse feed operation portion 52 of the seedling table 25 as the lateral feed drive shaft 51 protrudes from the hood case 41 with respect to the feed case 41. It is arranged so as to be located on the opposite side to the side where it is located, and is arranged so as to be coaxial with the lateral feed drive shaft 51, and is one end with respect to the end of the lateral feed drive shaft 51 outside the feed case 41. It is connected so that it can rotate integrally on the side. As shown in FIG. 6 and the like, this connecting structure includes a cylindrical shaft portion 51b integrally formed at an end portion protruding laterally outward from the feed case 41 of the lateral feed drive shaft 51, the cylindrical shaft portion 51b, and the cylindrical shaft portion 51b. A connecting pin 67 is provided over the end portion 64a of the vertical feed drive shaft 64, and is connected to the lateral feed drive shaft 51 and the vertical feed drive shaft 64 so as to be rotatable together and in a retaining state. It is configured.
  Thereby, the longitudinal feed drive shaft 64 is rotationally driven by the lateral feed drive shaft 51. As shown in FIG. 5, the arm shape extends in the direction orthogonal to the axis of the longitudinal feed drive shaft 64 from the longitudinal feed drive shaft 54 at two locations on the base end side and the distal end side of the longitudinal feed drive shaft 64. When the seedling platform 25 reaches the end of the lateral feed stroke on the left side of the machine body, the operating portion 64c is composed of a roller located at the tip portion. 8, the power is transmitted to the arm-shaped input portion 63a extending from the input side rotating body 63c of the one-way clutch 63 so as to be rotatable integrally with the one-way clutch 63. When the end is reached, the other operation portion 64b is brought into contact with the input portion 63a of the one-way clutch 63 by the action portion 64c made of a roller located at the tip portion, and transmits power. It is the sea urchin configuration.
[0042]
  That is, the longitudinal feed drive shaft 64 is always rotated in one rotation direction by the lateral feed drive shaft 51 that is driven to rotate by being transmitted with power from the output shaft 45 of the feed case 41 via the lateral feed speed change mechanism 53. When the seedling platform 25 that is driven and reciprocated in the lateral direction of the machine body reaches the lateral feed stroke end on the left side of the machine body, one operation portion 64b of the longitudinal feed drive shaft 64 is moved along with the arrival of the seedling platform 25. When the platform 25 reaches the lateral feed stroke end on the right side of the machine body, the other operation portion 64b of the longitudinal feed drive shaft 64 is brought into contact with the input portion 63a of the one-way clutch 63 in accordance with the arrival. In addition, as shown in FIG. 7, the driving force of the longitudinal feed drive shaft 64 is obtained by swinging the input portion 63a of the one-way clutch 63 against the return spring 69 by the operation portion 64b. Transmitted to the down-way clutch 63 seedlings longitudinal feeding shaft 62 rotates operated. Then, if one right vertical feed clutch 70a is in the engaged state, the right vertical feed clutch 70a transmits the power of the seedling vertical feed shaft 62 to the pair of belt pulleys 65 of the right lateral end seedling placement portion 25a. Thus, the pair of seedling vertical feeding belts 61 of the right lateral end seedling placement portion 25a are driven to vertically feed the mat-like seedlings on the seedling placement portion toward the seedling outlet 21a. If the other right vertical feed clutch 70a is in the engaged state, the right vertical feed clutch 70a transmits the power of the seedling vertical feed shaft 62 to the pair of belt pulleys 65 of the right adjacent seedling placement portion 25b. The pair of seedling vertical feed belts 61 of the right adjacent seedling placement section 25b are driven to vertically feed the mat-like seedlings on the seedling placement section toward the seedling extraction port 21a. If the left vertical feed clutch 70b is in the engaged state, the left vertical feed clutch 70b transmits the power of the seedling vertical feed shaft 62 to the pair of belt pulleys 65 of the left horizontal end seedling placement portion 25d. By transmitting also to the pair of belt pulleys 65 of the device 25c, the pair of seedling vertical feed belts 61 of the left lateral end seedling placement unit 25d and the pair of seedling vertical feed belts 61 of the left adjacent seedling placement unit 25c are also driven. Then, the mat-like seedling on the seedling placement unit is vertically fed toward the seedling taking-out port 21a. When the vertical feed stroke of the mat-like seedling becomes a stroke corresponding to the size of the block seedling in the vertical direction of the block seedling taken out by the seedling planting mechanism 22, the operation portion 64 a of the vertical feed drive shaft 64 is input to the input portion 63 a of the one-way clutch 63. The rotation operation of the seedling vertical feed shaft 62 by the vertical feed drive shaft 64 is stopped and the seedling vertical feed by the seedling vertical feed belt 61 is stopped, and the input portion 63a of the one-way clutch 63 is used for the return spring 69. Return to the standby position.
[0043]
  Therefore, the seedling vertical feed mechanism 60 causes the operation part 64b of the vertical feed drive shaft 64 to be input to the input part of the one-way clutch 63 every time the seedling platform 25 reaches the left and right lateral feed stroke ends. The driving force of the vertical feed drive shaft 64 is transmitted to the one-way clutch 63 by abutting on the 63a, and the seedling vertical feed shaft 62 is rotated via the one-way clutch 63. To the pair of seedling vertical feed belts 61 of the right lateral end seedling placement part 25a via the right vertical feed clutch 70a and to the pair of seedlings longitudinal feed of the right adjacent seedling placement part 25b via the other right vertical feed clutch 70a The belt 61 is transmitted to the pair of seedling vertical feed belts 61 of the left lateral end seedling placement portion 25d and the left adjacent seedling placement portion 25c via the left vertical feed clutch 70b to drive each seedling vertical feed belt 61. . Thereby, if one right vertical feed clutch 70a is in the engaged state, the right lateral seedling placement portion 25b is in the right lateral end seedling placement portion 25a, and if the other right vertical feed clutch 70a is in the engaged state, the right adjacent seedling placement portion 25b. If the left vertical feed clutch 70b is in the engaged state, the lower end portion of the mat-like seedling on the seedling placement portion at the left lateral end seedling placement portion 25d and the left adjacent seedling placement portion 25c is the seedling outlet. The mat-like seedling on the placement portion is directed toward the seedling extraction port 21a by the seedling vertical feed belt 61 so that the seedling planting mechanism 22 takes out a block seedling having a predetermined size in the vertical direction. Feed vertically.
[0044]
  As shown in FIGS. 4 and 12, a fractional strip provided with a movable clutch body 81 slidably and integrally fitted on the rotary drive shaft 26 inside the rear end portion of each of the pair of planting transmission cases 42. A planting clutch 80 is provided. Each of the end-planting clutches 80 is slid toward the chain sprocket 84 for the urging spring 83 when the movable clutch body 81 is inserted by swinging the arm-type operation portion 82 attached to the planting transmission case 42. The seedling planting mechanism 22 located on both sides of the planting transmission case 42 by operating and engaging the chain sprocket 84 with clutch claws to transmit the driving force of the transmission chain 49 to the rotary drive shaft 26. Or the movable clutch body 81 is slid against the biasing spring 83 due to the operating force of the operating portion 82 and the clutch pawl is disengaged from the chain sprocket 84. The transmission from the transmission chain 49 to the rotary drive shaft 26 is cut off, and the drive of the pair of seedling planting mechanisms 22 is stopped. It has become such a manner that the cut state.
[0045]
  As shown in FIG. 12, a right clutch operating tool 91 interlocked via an operation cable 90 with the operation portion 82 of the fractional planting clutch 80 that turns on and off the driving of the pair of seedling planting mechanisms 22 on the right side of the machine body. The left clutch operating tool 92 interlocked via the operation cable 90 with the operation portion 82 of the fractional planting clutch 80 that turns on and off the driving of the pair of seedling planting mechanisms 22 on the left side of the machine body, A swing operation is provided on the back side of the upper end.
[0046]
  The right clutch operating tool 91 is connected to the clutch operating tool 91 at one end, and the other end 93a is connected to the operating section 75 of each of the pair of right vertical feed clutches 70a as shown in FIG. While being connected to both the operation parts 75 by the single operation cable 93, by swinging this right clutch operation tool 91, both the fraction planting clutch 80 and the pair of right vertical clutches 70a are connected. These three clutches can be operated in conjunction with each other so that the clutch can be turned off or engaged.
  The left clutch operating tool 92 is connected to the operating portion 75 of the left vertical feed clutch 70b by an operating cable 94, and by swinging the left clutch operating tool 92, The two longitudinal clutches 70b can be switched and operated in conjunction with each other so that either of the left vertical feed clutches 70b is in the disengaged state or the engaged state.
[0047]
  That is, by operating the left clutch operating tool 92 in the on position and the right clutch operating tool 91 in the disengaged position, the right-side fraction planting clutch 80 is disengaged and the two seedling planting mechanisms on the right side of the machine body 22 is stopped and the pair of right vertical feed clutches 70a are turned off, so that the vertical feed of the right lateral end seedling placement part 25a and the right adjacent seedling placement part 25b is stopped, and four seedlings are planted. Only the two seedling planting mechanisms 22 on the left side of the body 22 of the mechanism 22 can perform fractional row planting work for planting seedlings.
  By operating the right clutch operation tool 91 in the on position and the left clutch operation tool 92 in the disengagement position, the left fractional planting clutch 80 is disengaged and the two seedling planting mechanisms 22 on the left side of the machine body The driving is stopped and the left vertical feed clutch 70b is turned off, so that the vertical feed of the left lateral end seedling placement part 25d and the left adjacent seedling placement part 25c is stopped, and the four seedling planting mechanisms 22 The planting mechanism 22 with only two right-hand sides of the machine body can perform the fractional strip planting work for planting seedlings.
[0048]
  [Second Embodiment]
  FIG. 13 shows a seedling planting device 20 having another embodiment. In this seedling planting device 20, five-row planting is possible, and five seedling placement units 25 a to 25 e are arranged. A planting transmission case 42 provided with a seedling platform 25 having a main frame 40 extending in the longitudinal direction of the main frame 40 toward the rear side of the machine body. The seedling planting mechanism 22 is attached to both lateral sides of the rear end portion of each planting transmission case 42 and the seedling planting mechanism 22 is attached to one lateral side of the rear end portion of the planting transmission case 42 located inside the machine body. Further, inside the rear end portion of each planting transmission case 42, there is provided a fraction planting clutch 80 configured in the same manner as the fraction planting clutch 80 of the first embodiment, and similarly to the seedling lateral feed mechanism 50 of the first embodiment. Drive to feed case 41 And a seedling transverse feed mechanism 50 having a horizontal feed drive shaft 51 mounted for movement.
[0049]
  The seedling vertical feed mechanism 60 of the seedling planting device 20 is the most of the seedling vertical feed shaft 62 and the seedling placement units 25a to 25e that are rotatably attached to the back side of the lower end portion of the seedling placing stand 25. Positioned on the back side of the partition wall 25f between the right lateral end seedling placement portion 25a located at the right lateral end of the seedling platform and the right adjacent seedling placement portion 25b adjacent to the right lateral end seedling placement portion 25a A one-way clutch 63 in which an output-side rotator (not shown) is attached to one end of the seedling vertical feed shaft 62 so as to be integrally rotatable, and is distributed to both lateral sides of the one-way clutch 63. A pair of right vertical feed clutches 70a attached to the seedling vertical feed shaft 62 in proximity to the clutch 63, a left vertical feed clutch 70b attached to the other end of the seedling vertical feed shaft 62, the left vertical feed clutch 70b and the both Between right vertical clutch 70a The middle vertical feed clutch 70c attached to the seedling vertical feed shaft 62 and the feed case 41 so that the lateral feed drive shaft 51 is located on the opposite side to the side projecting long from the feed case 41, and the lateral feed drive A longitudinal feed drive shaft 64 which is arranged so as to be coaxially aligned with the shaft 51 and is connected to the cylindrical shaft portion 51b of the lateral feed drive shaft 51 so as to be integrally rotatable at one end side outside the feed case 41. It is configured with.
[0050]
  That is, the seedling vertical feed mechanism 60 always rotates the vertical feed drive shaft 64 once by the horizontal feed drive shaft 51 that is driven to rotate by being transmitted power from the output shaft 45 of the feed case 41 via the lateral feed speed change mechanism 53. Each time the seedling platform 25 reaches the left and right lateral feed stroke ends, the operation portion 64b of the vertical feed drive shaft 64 is input to the one-way clutch 63 each time the seedling platform 25 reaches the left and right lateral feed stroke ends. The driving force of the vertical feed drive shaft 64 is transmitted to the one-way clutch 63 by contacting the portion 63a, and the seedling vertical feed shaft 62 is rotated via the one-way clutch 63. A pair of seedling vertical feed belts 61 of the right lateral end seedling placement part 25a is connected to one pair of right vertical seedling placement parts 25b via the right vertical feed clutch 70a. The vertical feed belt 61 is connected to the pair of seedling vertical feed belts 61 of the central seedling placement portion 25e via the middle vertical feed clutch 70c, and the left lateral end seedling placement portion 25d and the left adjacent seedling are placed via the left vertical feed clutch 70b. Each seedling vertical feed belt 61 is driven by being transmitted to the pair of seedling vertical feed belts 61 of the placement portion 25c. Thereby, if one right vertical feed clutch 70a is in the engaged state, the right lateral seedling placement portion 25b is in the right lateral end seedling placement portion 25a, and if the other right vertical feed clutch 70a is in the engaged state, the right adjacent seedling placement portion 25b. If the middle vertical feed clutch 70c is in the engaged state, the left seedling placement portion 25d and the left adjacent seedling placement are left in the center seedling placement portion 25e. In the portion 25c, the mat-like seedling on the placement portion is directed to the seedling extraction port 21a by the seedling vertical feed belt 61 so that the seedling planting mechanism 22 takes out a block seedling having a predetermined size in the vertical direction. To feed vertically.
[0051]
  The right clutch operation tool 91 connected to the operation portion 82 of the right-numbered fractional planting clutch 80 via the operation cable 90 is operated to operate each of the pair of right vertical feed clutches 70a via the single operation cable 93. And a pair of right vertical feed clutches 70a and a pair of right vertical feed clutches 70a. By operating, the planting work on the two right sides is turned on and off.
  An intermediate clutch operating tool 95 connected to the operation portion 82 of the center-piece fraction-planting clutch 80 via the operation cable 90 is connected to the operation portion 75 of the middle longitudinal feed clutch 70c via the operation cable 96. Yes, by swinging the middle clutch operating tool 95, the fraction planting clutch 80 for turning on and off the driving of one seedling planting mechanism 22 at the center of the machine body and the middle longitudinal feed clutch 70c are collectively turned on and off, No. 1 planting work has been completed.
  A left clutch operating tool 92 that is connected to the operating portion 82 of the left-sided fractional planting clutch 80 via the operating cable 90 is connected to the operating portion 75 of the left vertical feed clutch 70b via the operating cable 94. Yes, by turning the left clutch operating tool 92, the fractional planting clutch 80 for turning on and off the driving of the two seedling planting mechanisms 22 on the left side of the machine body and the left vertical feed clutch 70b are collectively turned on and off, and the left side of the machine body 2 The planting work for the strips is made up and down.
[0052]
    [Another embodiment]
  As in the first and second embodiments, the one-way clutch 63 is attached to the seedling vertical feed shaft 62 between the right lateral seedling placement portion 25a and the right adjacent seedling placement portion 25b adjacent thereto, You may implement by attaching to the seedling vertical feed shaft 62 between the seedling mounting part 25d of the left lateral end and the left adjacent seedling mounting part 25c adjacent to this. In this case, a pair of left vertical feed clutches that separately transmit the power of the seedling vertical feed shaft 62 to the seedling vertical feed belt 61 of the left lateral end seedling placement unit 25d and the seedling vertical feed belt 61 of the left adjacent seedling placement unit 25c. 70b, 70b are provided, and the pair of left longitudinal feed clutches 70b, 70b are distributed to both lateral sides of the one-way clutch 63, and are attached to the seedling longitudinal feed shaft 62 in close proximity to the one-way clutch 63. Can achieve the purpose.
  Therefore, the left end and right end seedling placement portions 25a are collectively referred to simply as the horizontal end seedling placement portion 25a, and the right adjacent seedling placement portion 25b adjacent to the right end seedling placement portion 25a and the left end seedling placement are referred to. The left adjacent seedling placement part 25c adjacent to the part 25d is collectively referred to simply as the adjacent seedling placement part 25b.
[Brief description of the drawings]
[Fig. 1] Side view of the whole rice transplanter with riding type fertilizer application
[Fig. 2] Plan view of the whole rice transplanter with riding type fertilizer application
[Fig. 3] Side view of seedling planting device
[Fig. 4] Development view of transmission mechanism
[Fig.5] Development view of transmission mechanism
[Fig. 6] Cross section of the feed case
FIG. 7 is a side view showing a driving operation of a seedling vertical feed shaft by a vertical feed drive shaft.
FIG. 8 is a cross-sectional view of a right vertical feed clutch
FIG. 9 is a cross-sectional view of a left vertical feed clutch
FIG. 10 is a front view showing an operation structure of a right vertical feed clutch.
FIG. 11 is a front view showing an operation structure of a left vertical feed clutch.
FIG. 12 is a diagram showing the operation structure of a longitudinal feed clutch and a fractional row planting clutch.
FIG. 13 is an operational structural diagram of a longitudinal feed clutch and a fractional row planting clutch of a seedling planting apparatus including another embodiment.
[Explanation of symbols]
  22 Seedling planting mechanism
  25 Seedling stand
  25aHorizontal one end sideSeedling placement part
  25bOne endAdjacent seedling placement part
  25c, 25d, 25e Seedling placement part
  41 Feed case
  51 Cross feed drive shaft
  51b Cylinder shaft portion of transverse feed drive shaft
  52 Transverse operation section of seedling stand
  61 Seedling vertical feed belt
  62 Seedling vertical feed shaft
  63 one-way clutch
  63a One-way clutch input section
  64 Vertical feed drive shaft
  64a End of vertical feed drive shaft
  64b Operation unit for vertical feed drive shaft
  67 Connecting pin
  70a Vertical feed clutch
  75 Longitudinal clutch operating section
  91 Operation tool

Claims (4)

It has a plurality of seedling placement parts arranged in the horizontal direction of the machine body and is attached to the back side of the seedling table so that it can be rotated back and forth in the horizontal direction in conjunction with the seedling planting movement of the seedling planting mechanism. Vertical seedling vertical feed shaft, horizontal one end side seedling placing part located at the most lateral end of the plurality of seedling placing parts, and one end side adjacent seedling placing adjacent to this lateral one end seedling placing part The one-way clutch that is arranged between the two parts and attached to the vertical feed shaft of the seedling, and the operation part (abuts the input part of the one-way clutch and the power transmission as the seedling mount reaches the left and right lateral feed stroke ends. A seedling planting device comprising a vertical feed drive shaft that is supported by a feed case so as to be able to rotate the seedling vertical feed shaft by rotating,
A vertical feed clutch that transmits the power of the seedling vertical feed shaft to a belt pulley that winds the seedling vertical feed belt of the horizontal one end side seedling placement unit, and a seedling vertical feed belt of the one end side adjacent seedling placement unit A vertical feed clutch that transmits the power of the seedling vertical feed shaft to the belt pulley that winds the belt is distributed to both sides of the one-way clutch, and is attached to the seedling vertical feed shaft close to the one-way clutch. In addition, the operation part of the both vertical feed clutch is linked to the same operation tool ,
A belt pulley that winds a seedling vertical feed belt of a lateral other end side seedling placing portion opposite to the lateral one end side seedling placing portion, and an other end adjacent to the lateral other end side seedling placing portion A belt pulley that winds the seedling vertical feed belt of the seedling placement unit is connected to a coaxial cylindrical shaft, and the power of the seedling vertical feed shaft is applied to the belt pulley of the other seedling placement unit adjacent to the other end. One vertical feed clutch to be transmitted is attached to the seedling vertical feed shaft on the one-way clutch side, and the operation unit of the vertical feed clutch is interlocked with an operation tool different from the operation tool,
The length of the seedling vertical feed shaft is set to the middle portion of the belt pulley of the lateral end side seedling placement portion that exceeds the longitudinal feed clutch with respect to the lateral end side seedling placement portion disposed in proximity to the one-way clutch, and the other Set to a length corresponding to the distance between the belt pulley of the other end side adjacent seedling placement part beyond the longitudinal feed clutch provided for the belt pulley of the end side adjacent seedling placement part. A seedling planting device.   Horizontally supported in the feed case so as to be driven and engaged with the lateral feed operation portion of the seedling platform, and the seedling platform is reciprocated in the lateral direction of the aircraft in conjunction with the seedling planting movement of the seedling planting mechanism. 2. The seedling planting apparatus according to claim 1, wherein the feed drive shaft and the longitudinal feed drive shaft are arranged coaxially and connected so as to be integrally rotatable.   The seedling planting apparatus according to claim 2, wherein the lateral feed drive shaft and the longitudinal feed drive shaft are connected outside the feed case.   A cylindrical shaft portion into which the end portion of the vertical feed drive shaft enters the end portion of the horizontal feed drive shaft is integrally formed, and is mounted across the cylindrical shaft portion and the vertical feed drive shaft so as to be connected to the horizontal feed drive shaft and the vertical feed drive. The seedling planting apparatus according to claim 2 or 3, further comprising a connecting pin that connects the shaft so as to be rotatable integrally and in a state of preventing the shaft from being detached.

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