JP2012060916A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To steadily adjust between seedlings by a simple transmitting mechanism.SOLUTION: In the seedling transplant in which the transplanting part is elevatably coupled to the rear part of the running part and seedlings are transplanted in the agricultural field by the transplanting part towed by the running part, driving force can be transmitted from an engine arranged in the running part to the input shaft of the transplanting part via a transmitting mechanism, an intra-seedling adjusting mechanism is arranged in the middle part of the transmitting mechanism, the intra-seedling adjusting mechanism is arranged in the running part, a clutch case is arranged near the intra-seedling adjusting mechanism in the middle part of the transmitting mechanism, the intra-seedling adjusting mechanism is interlockingly coupled to the clutch mechanism arranged in the clutch case, the connecting/disconnecting timing of the clutch mechanism is adjusted by the intra-seedling adjusting mechanism in which between seedlings is adjusted, the driving force is intermittently transmitted from the engine to the transplanting part.

Description

  The present invention relates to a seedling transplanting machine in which a clutch mechanism and an inter-strain transmission mechanism are provided in the middle of a transmission mechanism that transmits power from a traveling unit to a transplanting unit, and the clutch mechanism and the inter-strain transmission mechanism are disposed in the traveling unit.

  Conventionally, there exists what was disclosed by patent document 1 as one form of a seedling transplanter. That is, Patent Document 1 discloses a seedling transplanting machine in which a transplanting unit is connected to the rear of a traveling unit so that the transplanting unit can be moved up and down, and the traveling unit pulls the transplanting unit and transplants a seedling into a field by the transplanting unit. ing. The transplanting section is provided with a seedling supplying means for supplying seedlings, a seedling collecting means for extracting seedlings from the seedling supplying means, and a planting means for receiving the seedlings extracted by the seedling collecting means and planting them in the field. In addition, power can be transmitted to the drive system provided in each of these means from an engine provided in the traveling unit via a transmission mechanism. The drive system provided in the seedling collecting means is provided with an inter-strain adjustment mechanism so that the inter-strain adjustment mechanism can be adjusted.

JP-A-7-194213

  However, in the seedling transplanting machine described above, since the interstitial adjustment mechanism is provided in the seedling drive system of the transplanting part, in order to adjust the interstitial adjustment mechanism, the operator moves to the vicinity of the interstrain adjusting mechanism or the traveling part It is necessary to provide a remote control mechanism in order to operate while sitting on the driver's seat. In addition, the weight of the planting part that needs to be reduced is increased by the amount of the inter-strain adjustment mechanism. For this reason, it has been desired to develop a seedling transplanter that can steadily adjust strains with a simple transmission mechanism.

  Therefore, the present invention has been made in view of such problems, and can control the intermittent power transmission timing to the transplanted part and can stably adjust the strain between the strains with a simple transmission mechanism. The purpose is to provide a transplanter.

  The seedling transplanting machine according to the invention of claim 1 is a seedling transplanting machine in which the transplanting section is connected to the rear of the traveling section so as to be movable up and down, and the seedling transplanting apparatus is configured to transplant seedlings in the field by the transplanting section pulled by the traveling section. The power can be transmitted from the engine provided in the traveling part to the input shaft of the transplanting part through the transmission mechanism, and the inter-strain adjustment mechanism is provided in the middle part of the transmission mechanism. A clutch case is provided in the middle of the transmission mechanism in the vicinity of the inter-stock adjustment mechanism, and the inter-stock adjustment mechanism is linked to the clutch mechanism disposed in the clutch case, thereby adjusting the inter-stock The adjustment mechanism adjusts the connection / disconnection timing of the clutch mechanism so that power is intermittently transmitted from the engine to the transplanted portion.

  In such a seedling transplanting machine, an inter-strain adjustment mechanism is provided in the middle of the transmission mechanism, and the inter-strain adjustment mechanism is disposed in the traveling part. The weight of the part can be reduced. In addition, the number of parts can be reduced by sharing the clutch mechanism disposed in the clutch case in conjunction with the inter-stock adjustment mechanism. The connection / disconnection timing of the clutch mechanism is adjusted by the inter- stock adjustment mechanism, and the power is intermittently transmitted from the engine to the transplanting part. As a result, the intermittent power transmission timing to the transplanted part can be adjusted, and the strain can be steadily adjusted with a simple transmission mechanism.

  The seedling transplanting machine according to the invention of claim 2 is the seedling transplanting machine according to the invention of claim 1, wherein the inter-strain adjustment mechanism projects the output shaft and the input shaft in parallel from the clutch case, A transmission belt is wound between a pulley attached to the protruding end of the output shaft and a split pulley attached to the protruding end of the input shaft, and a tension roller is pressed against the middle of the transmission belt so that the tension can be adjusted. The adjusting means for pressing and adjusting the roller is configured to extend upward, and the tip of the adjusting means is arranged in the vicinity of the driver's seat of the traveling portion.

  In such a seedling transplanter, the tip of the adjusting means is disposed in the vicinity of the driver's seat of the traveling section, so that the operator can easily operate the adjusting means while sitting on the driver's seat while operating the traveling section. Can be adjusted. At this time, the inter-strain adjustment mechanism can be continuously variable by the adjusting means.

  The present invention has the following effects. That is, in the present invention, the inter-strain adjustment mechanism is provided in the middle of the transmission mechanism, and the inter-strain adjustment mechanism is disposed in the traveling unit, so that the weight of the transplanted part can be reduced and the transplanted part can be lifted and lowered easily. Can be made. In addition, the clutch mechanism arranged in the clutch case is linked and shared with the inter-strain adjustment mechanism, so that the connection / disconnection timing of the clutch mechanism is adjusted by the inter-strain adjustment mechanism and the engine is transferred from the engine to the transplant part. The power is transmitted intermittently. Therefore, the intermittent power transmission timing to the transplanted portion can be adjusted, and the strain can be steadily adjusted with a simple transmission mechanism.

The side view of the seedling transplanting machine which concerns on this invention. The top view of the seedling transplanting machine which concerns on this invention. The side view of the transplant part of the seedling transplanting machine which concerns on this invention. The top view of the transplant part of the seedling transplanting machine which concerns on this invention. The rear view of the transplant part of the seedling transplanting machine which concerns on this invention. Side surface explanatory drawing of an adjustment system between strains. The perspective explanatory view from the front of the inter-strain adjustment mechanism. The perspective explanatory drawing from the back of an inter-strain adjustment mechanism. The perspective explanatory view which isolate | separated the transplant unit of the transplant part. The perspective explanatory drawing of the connection part of a raising / lowering mechanism part and a transplant part. Side surface explanatory drawing of the connection part of a raising / lowering mechanism part and a transplant part. Explanatory drawing of the back of the connection part of a raising / lowering mechanism part and a transplant part. The power transmission concept explanatory drawing of a driving | running | working part. The power transmission concept explanatory drawing of a transplant part. The front view of a transplant unit.

[Seedling transplanter A]
A shown in FIGS. 1 and 2 is a riding seedling transplanter according to the present invention. As shown in FIGS. 1 and 2, the seedling transplanter A has a transplanting unit 3 attached to a rear part of a traveling unit 1 as a towing vehicle via a lifting mechanism unit 2 so as to be movable up and down. And this seedling transplanting machine A is made to be able to perform the transplanting operation of a plurality (two in this embodiment) of seedlings.

[Running part 1]
As shown in FIGS. 1 and 2, the traveling unit 1 is configured by mounting an upper body 12 on a lower body 11. The lower body 11 is formed with a connecting frame 15 extending in the front-rear direction between a mission case 13 disposed at the front and a rear axle case 14 disposed at the rear. Front axle cases 17 and 17 are extended outward from the left and right side wall portions of the transmission case 13, respectively, and a pair of left and right front wheels 19 are connected to the outer end portions of the front axle cases 17 and 17 via front axles 18 and 18, respectively. 19 is attached. A pair of left and right rear wheels 21, 21 are attached to the left and right outer ends of the rear axle case 14 via rear axles 20, 20. The connection frame 15 is formed in a pipe shape having a quadrangular cross section and extending straight in the front-rear direction. An engine 22 as a prime mover is mounted on the connection frame 15. As shown in FIG. 13, the engine 22 and the transmission case 13 are interlocked and connected via a first transmission mechanism 50. The transmission case 13 and the rear axle case 14 are interlocked and connected via a second transmission mechanism 51. The mission case 13 and the power intake portion 710 of the transplant portion 3 are interlocked and connected via a third transmission mechanism 52. The details of these transmission mechanisms 50 to 52 will be described later.

  As shown in FIGS. 1 and 2, the upper body 12 is stretched in a covering shape on a support frame body 25 having a frame shape in plan view provided on the lower body 11. A handle column 30 is erected on the front portion of the upper body 12, and a handle 31 is attached to the upper end surface portion of the handle column 30. A driver seat 32 is placed behind the handle 31 at the rear of the upper body 12.

  In the middle of the third transmission mechanism 52, a clutch case 53 and an inter-stock adjustment mechanism 54 are provided adjacent to each other in the front-rear direction, and these are disposed on the right rear portion of the lower body 11. An inter-strain adjustment mechanism 54 is linked to a clutch mechanism 55 disposed in the clutch case 53.

  As shown in FIGS. 6 to 8 and 13, the clutch case 53 extends in the up-down direction and is flat in the front-rear direction. The fourth transmission support shafts 57, 58, 59, 60 are installed at intervals in the vertical direction. The first transmission support shaft 57 has a base end portion linked to the upstream side of the third transmission mechanism 52. Reference numerals 61 and 62 denote first and second output gears attached to the first transmission support shaft 57. The second transmission support shaft 58 and the third transmission support shaft 59 are installed coaxially, and the base end portion of the second transmission support shaft 58 protrudes forward from the front wall of the case body 56, while the third transmission support shaft 59. Is coupled to the downstream side of the third transmission mechanism 52. The third transmission support shaft 59 is provided with a dog-type clutch mechanism 55 arranged in the middle, and a second input gear 64 that meshes with the second output gear 62 is arranged behind the dog-type clutch mechanism 55 so as to be loosely fitted. . The second input gear 64 is connected to the third transmission shaft 59 via the clutch mechanism 55 so as to be connected and disconnected. A first input gear 63 that meshes with the first output gear 61 is provided at the proximal end portion of the second transmission support shaft 58. The distal end portion of the second transmission support shaft 58 and the distal end portion of the fourth transmission support shaft 60 are projected forward in a parallel state, and are interlocked and connected to each other immediately before the case body 56 via an inter-stock adjustment portion 91 described later. Yes. A cam body 65 is provided on the fourth transmission support shaft 60.

  In the case body 56, a cam follower support shaft 70 disposed along the fourth transmission support shaft 60 and a clutch mechanism operating body support shaft 71 disposed along the second transmission support shaft 58 are provided. . A cam follower body 72 projects from the cam follower support shaft 70 in the radial direction, and a roller 73 attached to the tip of the cam follower body 72 is brought into contact with the peripheral end surface of the cam body 65. The front end portion of the cam follower support shaft 70 protrudes rearward from the rear wall of the case body 56, and a middle portion of the lower lever body 74 extending in the left-right direction is attached to the front end portion. A clutch mechanism actuating body 75 is projected in the radial direction on the clutch mechanism actuating support shaft 71, and the tip end portion of the clutch mechanism actuating body 75 is caused to advance and act on the actuated body 76 provided in the clutch mechanism 55. In addition, the function can be released by retreating. Here, when the clutch mechanism actuating body 75 acts on the actuated body 76, the clutch mechanism 55 is in a disconnected state. Further, when the action of the clutch mechanism actuating body 75 is released from the actuated object 76, the clutch mechanism 55 is in a connected state. The distal end portion of the clutch mechanism actuating shaft 71 protrudes rearward from the rear wall of the case body 56, and the proximal end portion of the upper lever body 77 extending in the left-right direction is attached to the distal end portion. The front end portion of the upper lever body 77 and one side end portion (inner end portion) of the lower lever body 74 are interlocked and connected via a timing rod 78 extending in the vertical direction. Reference numeral 79 denotes a spring that urges the lower lever body 74 to rotate clockwise about the cam follower support shaft 70 in a rear view.

  On the upper part of the case body 56, a common support shaft 81 having an axis line in the left-right direction is provided via a shaft support body 80, and the middle portion of the clutch lever body 82 is supported by the common support shaft 81. One end portion of the clutch lever body 82 and the other end portion (outer end portion) of the lower lever body 74 are interlocked and connected via a clutch rod 83 extending in the vertical direction. The other end part of the clutch lever body 82 and the transplanting part raising / lowering lever 84 that also functions as a clutch lever provided at the upper right part of the handle column 30 are interlocked and connected via a clutch interlocking mechanism 85 (see FIG. 1). . Reference numeral 86 denotes a non-interlocking long hole formed in the lower end portion of the clutch rod 83. In this way, when the transplanting part 3 is lifted by the transplanting part raising / lowering lever 84, the operating force is as follows: clutch interlocking mechanism 85 → clutch lever body 82 → clutch rod 83 → lower lever body 74 → timing rod 78 → upper lever body. 77 → clutch mechanism actuating shaft 71 → clutch mechanism actuating body 75, and the clutch mechanism actuating body 75 acts on the actuated body 76 to hold the clutch mechanism 55 in a disconnected state. On the other hand, when the transplant part 3 is lowered by the transplant part raising / lowering lever 84, an operating force is applied from the clutch rod 83 to the lower lever body 74 by the non-interlocking long hole 86 formed in the lower end part of the clutch rod 83. Not transmitted.

  The inter-strain adjustment mechanism 54 is arranged from an inter-strain operation unit 90 as an adjusting means that is arranged upstream of the common support shaft 81 and adjusts between the strains, and an inter-strain adjustment unit 91 that adjusts the inter-strain in conjunction with the adjustment operation. It is composed.

  The inter-strain operation unit 90 pivotally supports a middle portion of the adjustment lever body 92 extending in the front-rear direction on the common support shaft 81, and connects the lower end portion of the operation rod 93 extending in the vertical direction to the rear end portion of the adjustment lever body 92. is doing. The operation rod 93 has an upper end supported by the upper body 12 and a rotation operation handle 94 attached to the upper end. Then, by rotating the rotation operation handle 94, the operation rod 93 can be adjusted in the vertical direction, and the adjustment lever body 92 can be adjusted in the forward / backward swing position in conjunction therewith.

  The inter-strain adjustment unit 91 attaches an output pulley 95 to the tip of the second transmission support shaft 58 that is the output shaft, and attaches an input split pulley 96 to the tip of the fourth transmission support shaft 60 that is the input shaft. A transmission belt 97 is wound around the pulleys 95 and 96, and the transmission belt 97 is tensioned / relaxed by a tension arm 98 so that the rotation radius of the input split pulley 96 can be adjusted. Reference numeral 99 denotes a pressing spring that elastically biases the rotational radius of the input split pulley 96 toward the large diameter side. The tension arm 98 is formed by extending in the vertical direction. The tension arm 98 is pivotally supported on the front wall of the case body 56 via an arm support shaft 100 having an axis line in the front-rear direction, and is provided at the distal end portion. The roller 101 is brought into contact with the inner peripheral surface of the transmission belt 97. A connecting rod 102 extending in the front-rear direction is interposed between the base end portion of the tension arm 98 and the front end portion of the adjustment lever body 92. Reference numeral 103 denotes an inter-strain adjustment unit cover that covers the outside of the inter-strain adjustment unit 91.

  In this way, the rotational force transmitted from the upstream side of the third transmission mechanism 52 is the first transmission support shaft 57 → the first output gear 61 → the first input gear 63 → the second transmission support shaft 58 → the output pulley 95. → Transmission belt 97 → Input split pulley 96 → Fourth transmission support shaft 60 → Cam body 65 → Roller 73 → Cam follower body 72 → Cam follower support shaft 70, and the cam follower support shaft 70 rotates intermittently. Is done. Then, the intermittent turning force is transmitted to the cam follower support shaft 70 → the lower lever body 74 → the timing rod 78 → the upper lever body 77 → the clutch mechanism operating body support shaft 71 → the clutch mechanism operating body 75, and the clutch The mechanism actuating body 75 acts intermittently on the actuated body 76 to disengage the clutch mechanism 55 intermittently. Therefore, the rotational force is intermittently transmitted from the third transmission support shaft 59 to the transplant section 3 via the downstream side of the third transmission mechanism 52. As a result, each drive unit of the transplant unit 3 is driven intermittently, and the inter-strain interval of the seedlings (strains) transplanted by the transplant unit 3 can be maintained constant. As described above, when the transplanting part 3 is lifted by the transplanting part lifting lever 84, the clutch mechanism 55 is held in a disconnected state.

  At this time, the rotation operation handle 94 is rotated and the adjustment lever body 92 is adjusted in the forward / backward swing position, whereby the tension arm 98 is adjusted in the left / right rotation position via the connecting rod 102, and the tension roller is adjusted. The pressing force acting on the transmission belt 97 can be adjusted via 101. Therefore, the rotation radius of the input split pulley 96 can be adjusted steplessly by adjusting the pressure of the transmission belt 97. As a result, the rotational speed of the cam body 65 can be adjusted, and the intermittent rotational speed of the cam follower support shaft 70 can be adjusted. Therefore, an intermittent interval at which the rotational force is transmitted from the second transmission support shaft 58 to the transplanted portion 3 via the downstream side of the third transmission mechanism 52, that is, an inter-strain interval of seedlings transplanted by the transplanted portion 3 is appropriately set. Can be adjusted steplessly.

  Moreover, with the above-described configuration, it is possible to reduce the weight of the transplanted portion 3 that is desired to be reduced in weight as much as possible from the need to lift and lower easily. Since the inter-stock adjustment mechanism 54 is interlocked and connected to the clutch mechanism 55 disposed in the clutch case 53, the power transmission from the engine 22 of the traveling unit 1 to the transplanting unit 3 is connected / disconnected via the clutch mechanism 55. Can do. And by interlockingly connecting the inter-strain adjustment mechanism 54 to the clutch mechanism 55, it is possible to adjust the inter-strain adjustment, that is, the intermittent power transmission timing to the transplanting unit 3 by using the clutch mechanism 55 in common. The inter-stock adjustment mechanism 54 can adjust the continuously variable transmission, and the operator can easily perform the continuously variable adjustment while sitting on the driver's seat 32 of the traveling unit 1.

  Next, the power transmission structure of the traveling unit 1 will be described with reference to FIG. The transmission case 13 is linked to the engine 22 via the first transmission mechanism 50. The first transmission mechanism 50 is formed by winding a transmission belt 903 between pulleys 901 and 902 between an output shaft 23 of the engine 22 and an input shaft 900 provided in the transmission case 13. The mission case 13 is provided with a hydrostatic continuously variable transmission 912 including a hydraulic pump 910 having a variable swash plate and a hydraulic motor 911. The hydraulic pump 910 is interlocked with the input shaft 900. The hydraulic motor 911 is fluidly connected to the hydraulic pump 910, and the main transmission mechanism 914 is linked to the output shaft 913. 915 is a main clutch, and 916 is a main transmission shaft. A front wheel transmission shaft 917 extending in the left-right direction is linked to the main transmission shaft 916, and a pair of left and right front wheels 918, 918 and front axles 18, 18 are connected to the left and right ends of the front wheel transmission shaft 917. The wheels 19 and 19 are linked and connected.

  An output shaft 919 having an axis line in the front-rear direction is provided on the left side of the mission case 13. The output shaft 919 is interlocked with the main transmission shaft 916 at the base end portion, and interlocked via the second transmission mechanism 51 to the input shaft 920 that protrudes forward from the rear axle case 14 with the tip portion protruding rearward. It is connected. The second transmission mechanism 51 is formed of a transmission shaft that extends in the front-rear direction.

  The rear axle case 14 is provided with a rear wheel transmission shaft 921 extending in the left-right direction. A midway portion of the rear wheel transmission shaft 921 is linked to the base end portion of the input shaft 920, and a pair of left and right rear wheels are connected to the left and right side portions of the rear wheel transmission shaft 921 via the rear axles 922, 922 and the rear axles 20, 20. 21 and 21 are linked together. Reference numeral 923 denotes a brake.

  A PTO shaft 930 having an axis line in the front-rear direction is provided at the right rear portion of the mission case 13. The PTO shaft 930 is interlocked with an interlocking shaft 931 whose base end is interlocked with the main transmission mechanism 914, and has a distal end projecting rearward to a power take-in portion 710 of the transplanting portion 3 described later. Interlocked connection via 52. The third transmission mechanism 52 is formed of an upstream transmission shaft 932 and a downstream transmission shaft 933. The upstream transmission shaft 932 interlocks and connects the distal end portion of the PTO shaft 930 and the proximal end portion of the first transmission support shaft 57 provided in the clutch case 53. Further, the downstream transmission shaft 933 interlocks and connects the distal end portion of the third transmission support shaft 59 provided in the clutch case 53 and the distal end portion of the power intake shaft 711 protruding forward from the power intake portion 710. The downstream transmission shaft 933 is formed to be foldable and extendable. The base end portion of the power intake shaft 711 is linked to a transmission shaft 700 described later.

[Elevating mechanism 2]
As shown in FIG. 1, the elevating mechanism unit 2 is attached to a rear-view portal type elevating mechanism support body 26 that forms the rear part of the support frame 25 so as to be rotatable up and down. As shown in FIG. 4, the elevating mechanism unit 2 includes a top link piece 40 extending in the front-rear direction, a pair of left and right lower link pieces 41, a rear end connecting piece 42, and a single-action elevating cylinder 43. Yes.

  A front end portion of the top link piece 40 is connected to an upper portion of the lifting mechanism support body 26 via an upper pivot pin 44 having an axial center directed in the left-right direction. A front end portion of the lower link piece 41 is connected to a lower portion of the elevating mechanism support body 26 via a lower pivot pin 45 whose axis is directed in the left-right direction.

  As shown in FIGS. 1 and 10 to 12, the rear end connecting piece 42 is formed in a quadrangular cylindrical shape extending in the vertical direction to open the front wall upper portion and between the left and right side wall upper portions in the left-right direction. A pivot pin 46 having an axial core directed to is installed. The rear end portion of the top link piece 40 is pivotally connected to the middle portion of the pivot pin 46 via a boss portion 38, while the lower link piece 41 is connected to a lower portion thereof via a connection pin 48 having an axial center directed in the left-right direction. The rear end is pivotally connected. At the lower end of the rear end connecting piece 42, a swinging boss 49 for pivotally supporting a transplanted part 3 to be described later is pivoted in the front-rear direction. Reference numeral 35 denotes a receiving body for projecting rearward from each rear end portion of the pair of left and right lower link pieces 41 to restrict the left-right swinging of the transplant portion 3. The elevating cylinder 43 is connected to the central upper portion of the elevating mechanism support 26 via a proximal pivot pin 47 and is pivotally supported by a connecting piece 36 erected between the rear portions of the pair of left and right lower link pieces 41. The tip is connected via a pin 37.

  In this way, by supplying pressure oil to the elevating cylinder 43, the elevating cylinder 43 is single-compressed to raise the rear end connecting piece 42, while the pressure oil supplied to the elevating cylinder 43 is discharged. The transplanted portion 3 connected to the rear end connecting piece 42 is lowered by its own weight by being extended.

[Transplanting part 3]
As shown in FIGS. 3 to 5 and 9, the transplanting unit 3 has a seedling supply means 200 that supplies seedlings on the support machine frame 110. And the front end part of the unit machine frame 300 is attached to the rear end part of the support machine frame 110 so that the attachment position can be adjusted and removed in the left-right width direction. In the unit machine frame 300, a seedling collecting means 400 for taking out seedlings from the seedling supply means 200 and a planting means 500 for receiving the seedlings taken out by the seedling collecting means 400 and planting them in the field are integrally assembled as a transplant unit 600. Yes. Reference numeral 111 denotes a stand body that is detachably attached to the front, rear, left, and right side portions of the support machine frame 110 to support the transplant portion 3 and is removed during transplantation work or the like.

  The support machine frame 110 includes a machine frame main body 120, a horizontal feed frame body 170 placed on the machine frame main body 120 so as to be capable of lateral and lateral feeds, and a pair of left and right vertical feed frame bodies placed on the horizontal feed frame body 170. 180,180. The machine frame main body 120 is formed of a substantially horizontal frame body 130 having a rectangular frame shape in plan view, and a rear-view portal-type rising frame body 147 erected on the front portion of the substantially horizontal frame body 130.

  The substantially horizontal frame 130 includes a pair of front and rear left and right extension pieces 131 and 132 extending in the left and right direction, and a front and rear extension piece 133 extending between the left and right ends of the left and right extension pieces. 133 is formed in a rectangular frame shape in plan view. The left and right side portions of the rear left and right direction extending piece 132 are connected to upper end portions of a pair of left and right plate-like stays 134 and 134 whose side surfaces are directed in the left and right direction. Then, a lower guide rail piece 135 extending in the left-right direction is horizontally placed between the front portions of the both stays 134, 134, and a mounting piece 136 extending in the left-right direction is provided between the lower portions of the both stays 134, 134. The unidirectionally extending piece 132 is horizontally opposed to the up-down direction. The rear end portion of the longitudinally extending piece 133 is connected to the rearward extending piece 132 via the stay 134.

  A transmission gear case 137 is detachably connected to the left side of the substantially horizontal frame 130, and the seedling supply means for mounting the power from the engine 22 of the traveling unit 1 on the lateral feed frame 170 via the transmission gear case 137. 200 is transmitted. A shaft support 138 is detachably connected to the right side portion of the substantially horizontal frame 130, and a lateral feed shaft 139 that extends in the left-right direction between the transmission gear case 137 and the shaft support 138 opposed to the left and right and a vertical A feed shaft 140 is installed.

  In this way, the transmission gear case 137 is detachably connected to the left side portion of the lateral feed frame 170 without being used as a strength member of the substantially horizontal frame 130, so that the transmission gear case 137 can be easily removed from the substantially horizontal frame 130. It can be removed for maintenance work, or it can be replaced. A shaft support 138 is detachably connected to the right side of the substantially horizontal frame 130, and a lateral feed shaft 139 extending in the left-right direction between the transmission gear case 137 and the shaft support 138 opposed to the left and right. Since the vertical feed shaft 140 is installed, it is easy to assemble and remove the horizontal feed shaft 139 and the vertical feed shaft 140 between the transmission gear case 137 and the shaft support 138 which are detachable from the substantially horizontal frame 130. become.

  The rising frame body 147 raises a pair of left and right rising pieces 148 and 148 from the left and right side portions of the front left and right direction extending piece 131 toward the front upper side, and extends in the left and right direction between the upper end portions of both rising pieces 148 and 148. The upper guide rail piece 149 is constructed so as to have a rear portal structure.

  As shown in FIGS. 9 to 11, a swing support shaft 121 having an axis line in the front-rear direction is projected forward from the center portion of the front left-right extending piece 131. The swing support shaft 121 is fitted to a swing boss portion 49 provided at the lower end portion of the rear end connecting piece 42 of the elevating mechanism section 2, and the support machine frame 110 is swung left and right around the swing support shaft 121. It is said to be movable. A swing guide body 122 formed in a U shape in a plan view is provided on the upper rear surface of the rear end connecting piece 42 so as to protrude rearward. In the left and right side walls of the swing guide body 122, elongated guide holes 123, 123 extending in the vertical direction are formed facing the left and right sides, and the guide pins 124 extending in the lateral direction in both the elongated guide holes 123, 123 are formed. Is penetrated. Then, the pair of left and right support arms 125 and 125 are raised from the front wall of the front left and right direction extension piece 131 to the front upper side, and the left and right extension pieces 126 extending in the left and right direction are horizontally mounted between the upper ends of the both support arms 125 and 125. The left and right ends of the left and right extension pieces 126 are connected to the lower portions of the rising pieces 148 and 148. A pair of left and right guide pin support pieces 127 and 127 are erected on the left and right extension piece 12, and a guide pin 124 is horizontally placed between the both guide pin support pieces 127 and 127. In this way, the guide pin 124 is brought into contact with the upper end or the lower end of the long guide holes 123, 123, so that the horizontal swing range of the machine frame main body 120 and the support machine frame 110 is suppressed. .

  As shown in FIG. 3, a spring connecting piece 150 is provided at the upper end of the rear end connecting piece 42 so as to project forward and upward, and between the upper end of the spring connecting piece 150 and the upper parts of the rising pieces 148 and 148. Are provided with a pair of left and right tension springs 151, 151. In this manner, the support machine frame 110 that swings freely left and right by the elastic biasing force of the tension springs 151 and 151 is automatically returned to the neutral (substantially horizontal posture).

  A left / right swing restricting body 160 is detachably interposed between the rear end portion of the elevating mechanism portion 2 and the front end portion of the support machine frame 110. That is, the pivot pin 46 which is installed between the upper portions of the left and right side walls of the rear end connecting piece 42 and pivotally connects the rear end of the top link piece 40 to the outer side from the left and right side walls of the rear end connecting piece 42. It protrudes to. And the base end part (front-end part) of a pair of right-and-left rocking | fluctuation control bodies 160 and 160 extended in the front-back direction is provided in the left-right projecting end part of the pivot pin 46 continuously. Then, a pair of left and right swing regulation bodies 160 with the pivot pin 46 as the center is integrally rotatable up and down. A locking portion 161 whose lower and left and right sides are open is formed at the front end portion of the left and right swing restricting body 160 so that the locking portion 161 can be locked and disengaged from the upper side to the guide pin 124 from above. In this way, when the locking portions 161, 161 of the pair of left and right swing control bodies 160, 160 are locked to the guide pins 124, both the left and right swing control bodies 160, 160 are low in front and rear. The right and left swinging motion of the guide pin 124 is restricted (locked). As a result, the left and right swinging of the support machine frame 110, and thus the transplantation unit 3, is restricted, and the running unit 1 and the transplantation unit 3 change their postures integrally. In addition, when the locking portions 161 and 161 of the pair of left and right swing regulation bodies 160 and 160 are released from the guide pins 124, the transplant portion 3 freely swings to the left and right as described above. Even if the unit 1 travels in an inclined posture along the farm scene, the transplanting unit 3 takes a posture along the ridge. The fixing and releasing of the posture of the transplanting part 3 can be appropriately selected according to the working conditions, and the working efficiency can be improved.

  The seedling supply means 200 is provided with vertical feed units 210 and 210 on a pair of left and right vertical feed frames 180 and 180, respectively. Each vertical feed unit 210 includes a vertical feed drive mechanism 220 linked to the vertical feed shaft 140, and a vertical feed mechanism 230 linked to the vertical feed drive mechanism 220 to intermittently feed a seedling tray (not shown). And a seedling stage 240 provided with a vertical feed mechanism 230. The seedling tray is formed by arranging pot seedling storage recesses in an orderly manner in the vertical and horizontal directions, and is guided and supported on the seedling mounting table 240. The vertical feed mechanism 230 causes the vertical feed mechanism 230 to intermittently feed the seedling tray vertically from above to below on the seedling mounting table 240. The transverse feed frame 170 is provided with a transverse feed mechanism 250 that is linked to the transverse feed shaft 139. Then, the horizontal feed mechanism 250 reciprocates the horizontal feed frame 170 in the left-right direction on the machine frame main body 120, and the vertical feed is placed on the horizontal feed frame 170 via the vertical feed frames 180 and 180. The units 210 and 210 are laterally fed.

  Here, the vertical feed units 210 and 210 can be adjusted in position in the horizontal direction on the vertical feed frames 180 and 180, respectively. That is, since the left-right distance between the pair of left and right transplant units 600, 600, which will be described later, that is, the striations are adjustable, the vertical feed units 210, 210 are adapted to adjust the left-right distance of the transplant units 600, 600. Also, the position can be adjusted appropriately in the left-right direction.

  The unit machine frame 300 includes a pair of left and right pipe-like front and rear extension frames 310 and 320 that extend in the front-rear direction, and a pipe-like shape that extends in the left-right direction and extends horizontally between the rear ends of the front and rear extension frames 310 and 320. The left and right extension frames 330 are formed in a U shape in plan view. The rear surfaces of the left and right unit side connecting plate members 340 and 350 having a plurality of connecting holes 341 and 351 are connected to the front ends of the front and rear extension frames 310 and 320, respectively. Further, between the left and right direction extending pieces 132 and the attachment pieces 136 included in the substantially horizontal frame body 130, left main body side connecting plate bodies 141 and 141 connected in surface contact with the front surface of the left unit side connecting plate body 340 are provided. It is erected with a moderate gap in the left-right direction. A large number of connection holes 142 are regularly formed in the left main body side connection plate body 141 at regular intervals in the vertical and horizontal directions. Then, right and left main body side connecting plate bodies 143, 143, 144, and 144 extending in the left-right direction are connected to the left-right direction extending piece 132 and the attachment piece 136, respectively, with appropriate intervals in the left-right direction. A large number of connection holes 145 and 146 are formed in the right upper and lower main body side connection plate bodies 143 and 144 with a certain interval in the left-right direction.

  In this way, the left unit side connecting plate body 340 is brought into surface contact with the left main body side connecting plate body 141, and the right unit side connecting plate body 350 is brought into surface contact with the right upper and lower body side connecting plate bodies 143 and 144. The connecting plate bodies facing each other can be connected to each other by inserting a connecting bolt into the corresponding connecting hole and screwing a nut (not shown). At this time, by appropriately changing the corresponding connecting holes in the left-right direction, the interval between the left and right unit machine frames 300, 300, and further, the interval between the transplant units 600, 600 assembled to each unit machine frame 300, 300 is obtained. Can be adjusted. As a result, it is possible to adjust the spacing between seedlings transplanted by the transplant units 600 and 600.

  As shown in FIGS. 3 to 5, 9, and 15, the transplant unit 600 is provided with the seedling collecting means 400 on the left and right front and rear distraction frames 310 of the unit machine frame 300, while the right and left and front distractions of the unit machine frame 300 are provided. A planting means 500 is provided on the frame 320. The seedling collection means 400 includes a pair of left and right seedling collection claws 410 and a seedling collection operation mechanism 420 that sandwiches and operates both the seedling collection claws 410. The planting means 500 includes a pair of front and rear planting claws 510 and a planting operation mechanism 520 that opens and closes both planting claws 510. The seedling claw 410 and the planting claw 510 are arranged close to each other in the vertical direction, and the seedling operation mechanism 420 and the planting operation mechanism 520 are arranged to face each other in the left-right direction with the claws 410 and 510 interposed therebetween. ing. A cover ring 630 is attached to the unit machine frame 300 via a cover ring support frame 610 and a lifting support 620. The soil covering ring 630 is disposed between the seedling operation mechanism 420 and the planting operation mechanism 520 that are arranged to face each other in the left-right direction in a plan view and at a position immediately after the planting claw 510.

  Below the substantially horizontal frame 130, a transmission shaft 700 extending in the left-right width direction is horizontally mounted as an input shaft of the transplanting section 3. The transmission shaft 700 includes a power intake portion 710 that receives power from the PTO shaft 930 of the traveling unit 1, and output portions 720 and 720 that are arranged on the left and right sides of the power intake portion 710 and output power to the transplantation units 600 and 600. In addition, a seedling supply clutch portion 730 that is arranged on the left side of the left transplant unit 600 and that connects and disconnects the power to the seedling supply means 200 is interlocked.

  As shown in FIG. 14, the transmission gear case 137 is provided with an input shaft 940 that protrudes rightward with its axis line directed in the left-right direction. The front end portion of the input shaft 940 and the left end portion of the transmission shaft 700 are interlocked and connected by a transmission chain 943 via sprockets 941 and 942. The base end of the input shaft 940 is interlocked with the base end of the lateral feed shaft 139 via a gear transmission mechanism 154 and the base end of the vertical feed shaft 140 is interlocked with a gear group 155. Yes. The longitudinal feed drive mechanism 220 includes a longitudinal feed cam 960 provided at the tip of the longitudinal feed shaft 140, a roller 962 that abuts on the fixed cam 961, a roller 964 that abuts on the one-way cam 963, a gear group 965 that interlocks therewith, and the like. ing. The longitudinal feed mechanism 230 includes a longitudinal feed drive shaft 950 that extends in the left-right direction by interlockingly connecting one end of the gear group 965, a longitudinal feed driven shaft 951 that faces the longitudinal feed drive shaft 950 in a parallel state, A transmission chain 954 wound around the shafts 950 and 951 via sprockets 952 and 953 is provided.

  An input unit 740 is attached to the front part of the right front / rear extension frame 320 forming a part of the unit machine frame 300 from below through a bracket. A transmission shaft 750 that is foldable and expandable in the axial direction is interposed between an output shaft 721 that protrudes rearward from the output portion 720 and an input shaft 741 that protrudes forward from the input portion 740. is doing. The transmission shaft 750 is detachably linked to the input shaft 741 so that the connection between the transmission shaft 750 and the input shaft 741 is released when the transplant unit 600 is removed from the machine casing main body 120. Further, since the transmission shaft 750 is interlocked and connected to the input shaft 741 so as to be foldable and extendable in the axial direction, the gap is adjusted by adjusting the mounting position of the transplant unit 600 with respect to the machine body 120 as it is. be able to. That is, even when the position of the transplantation unit 600 is adjusted in the left-right width direction, the transplantation unit 600 can be made to follow even in a state where the transmission shaft 750 and the input shaft 741 are linked to each other, and the position adjustment of the transplantation unit 600 can be easily performed. be able to.

  The transplant unit 600 is provided with a unit transmission mechanism 760 along the unit machine casing 300. The unit transmission mechanism 760 includes a right transmission case 762 disposed along the right front / rear extension frame 320, a left transmission case 761 disposed along the left front / rear extension frame 310, and both transmission cases 761, 762. A transmission intermediate shaft 763 disposed between the rear end portions and disposed along the left and right extending frames 330 is formed. The planting operation mechanism 520 is interlocked to the left end of the input unit 740, while the front end (starting end) of the right transmission case 762 is interlocked to the right end of the input 740, and the left transmission case 761 is connected. A seedling operation mechanism 420 is interlocked and connected to the front end portion (terminal portion). That is, an output shaft 742 extending in the left-right direction is provided in the input portion 740 so as to protrude in the left-right direction, and a base end portion of the input shaft 741 is linked and connected to a middle portion of the output shaft 742. A planting operation mechanism 520 is interlocked to the left end portion of the output shaft 742. The right transmission case 762 is formed by winding a transmission chain 765 via sprockets 743 and 764 between the right end of the output shaft 742 and the right end of the transmission intermediate shaft 763. The left transmission case 761 winds a transmission chain 769 between the right end of the transmission intermediate shaft 763 and the right end (base end) of the output drive shaft 766 extending in the left-right direction via sprockets 767 and 768. Formed. The output drive shaft 766 protrudes to the right side, and the seedling operation mechanism 420 is interlocked and connected to the right end portion thereof.

  In this way, the power from the traveling unit 1 can be transmitted in a distributed manner (in parallel) to the transplant unit 600 and the seedling supply means 200 via the transmission shaft 700, and via the input unit 740 of the transplant unit 600. The seedling collecting means 400 and the planting means 500 can be transmitted in a distributed manner (in parallel). Moreover, since the intermittent power transmission timing of the power from the traveling unit 1 is adjusted by the inter-strain adjustment mechanism 54 provided in the traveling unit 1, the power of the seedling supply unit 200, the seedling collection unit 400, and the planting unit 500 is adjusted. There is no need to provide a mechanism for individually adjusting the transmission timing, and the structure can be simplified. Further, since the operation timings of the seedling collecting means 400 and the planting means 500 are synchronized, the seedling collecting means 400 and the planting means 500 cooperate to firmly transplant the pot seedling taken out from the seedling tray to the field. Can do. Since the seedling collecting means 400 and the planting means 500 are integrally attached to the unit machine frame 300 to form the transplant unit 600, the power transmission timing of the seedling harvesting means 400 and the planting means 500 is appropriately maintained, By adjusting the mounting position of the transplant unit 600 to the substantially horizontal frame body 130 in the left-right direction, the transplant position to the farm field, and further, the striation adjustment can be easily performed. Further, if necessary, the transplant unit 600 can be detached from the substantially horizontal frame 130 and can be easily transported or maintained alone. Further, when the seedling transplanter A is loaded on the transport vehicle and transported, the seedling transplanter A can be made compact and transported efficiently by removing the unit machine frame 300 from the substantially horizontal frame 130.

  A seedling operating mechanism 420 is provided on an output drive shaft 766 that protrudes rightward from the front end (terminal portion) of the left transmission case 761 via a rotary case 440, a crank arm 450, an opening / closing cam 460, and a seedling extraction arm 470. The pair of right and left seedling collecting claws 410 are interlocked and connected. Reference numeral 480 denotes an arm guide body having a guide hole, and a guide roller 490 provided on the seedling extraction arm 470 is slidably fitted into the guide hole.

  In this way, the seedling removal operation mechanism 420 performs the following seedling extraction operation. That is, the seedling extraction arm 470 is interlocked with the rotary operation of the rotary case 440 and the crank arm 450 that are interlocked with the output drive shaft 766, and the seedling extraction arm 470 is placed along the guide hole of the arm guide body 480 in the seedling tray. Move to the seedling removal position to remove the pot seedling. And while inserting the front-end | tip of a pair of right and left seedling picking claws 410 into a pot seedling, it will be in the clamping (closed) state which made the front-end | tip of a pair of right and left seedling picking claws 410 approach by the opening / closing cam 460, and will take out a pot seedling. Subsequently, the seedling extraction arm 470 is moved along the guide hole of the arm guide body 480 to the seedling claw side inheritance position, which is a position immediately above the planting claw 510. Then, the tip of the pair of left and right seedling catching claws 410 is brought into a nipping release (opened) state separated by the opening / closing cam 460, and the pot seedling is released downward.

  The planting operation mechanism 520 has a rotary case 530, a crank arm 540, an opening / closing cam body 550, and a seedling planting arm 560 at the left end of the output shaft 742 that protrudes leftward from the left end of the input unit 740. Thus, the planting claws 510 composed of a pair of front and rear planting claw forming pieces 511 and 512 are interlocked and connected. Reference numeral 570 denotes a lifting guide body having a guide groove extending in the vertical direction, and a guide roller 580 provided on the seedling planting arm 560 is slidably fitted in the guide groove.

  In this way, the planting operation mechanism 520 performs the following seedling planting (transplanting) operation. That is, the seedling planting arm 560 is interlocked with the rotary operation of the rotary case 530 and the crank arm 540 linked to the output shaft 742, and the seedling planting arm 560 is moved along the guide groove of the lifting guide body 570. Move upward to the planting claw side inheritance position, which is the inheritance position. At this time, the planting claw 510 joins (closes) the pair of front and rear planting claw forming pieces 511 and 512 by the opening / closing cam body 550, and receives the pot seedling into the planting claw 510 having an open top surface. . Subsequently, the seedling planting arm 560 is moved down along the guide groove of the lifting guide body 570 to the planting position in the field soil. Then, the pair of front and rear planting claw forming pieces 511 and 512 are brought into an open (open) state separated by the opening / closing cam body 550, and the pot seedling is discharged into the field soil. Thereafter, the pair of front and rear planting claw forming pieces 511 and 512 returns to the joined state while returning to the initial position. Since the covering ring 630 is arranged immediately after the planting claw 510, the released pot seedling (the seedling immediately after transplanting) is firmly covered with the covering ring 630.

  The seedling claw 410 and the planting claw 510 are arranged close to each other in the vertical direction, and the seedling collection operation mechanism 420 and the planting operation mechanism 520 are opposed to each other in the left-right direction with both the claws 410 and 510 interposed therebetween. By arranging, the seedling claw 410 and the planting claw 510 can be arranged as close as possible, and the pot seedling is delivered from the seedling claw 410 to the planting claw 510 firmly.

  The cover ring 630 is linked to the cover ring lifting / lowering adjustment lever 800 provided at the front of the machine body 120 via the cover ring lifting / lowering mechanism 810, and the cover ring lifting / lowering adjustment lever 800 moves the cover ring 630 up and down stepwise. The position can be adjusted. Reference numeral 820 denotes a covering ring lifting adjustment guide body. Reference numeral 830 denotes a cover ring lifting / lowering adjustment piece attached to the lifting support 620. The cover ring lifting / lowering adjustment piece 830 can adjust the position of the covering ring 630 to a large and arbitrary width.

  Reference numeral 840 denotes an elevation sensor roller. The elevation sensor roller 840 is linked to a roller elevation adjustment lever 850 provided at the front portion of the machine frame main body 120 via a roller elevation adjustment mechanism 860, and the elevation sensor is moved by the roller elevation adjustment lever 850. The raising / lowering position of the roller 840 can be adjusted stepwise. Reference numeral 870 denotes a roller lifting adjustment guide body. The lift sensor roller 840 moves up and down along the uneven surface of the farm surface, and the lift operation and a hydraulic valve (not shown) for switching the hydraulic circuit to the lift cylinder 43 connect the interlocking wire 880. The transplanting depth (planting depth) can be maintained constant by moving the transplanting part 3 up and down appropriately in conjunction with each other.

A Seedling transplanter 1 Traveling part 2 Lifting mechanism part 3 Transplanting part 53 Clutch case 54 Inter-strain adjustment mechanism 200 Seedling supply means 300 Unit machine frame 400 Seedling means 500 Planting means 600 Transplanting unit

Claims (2)

In the seedling transplanting machine that connects the transplanted part to the rear of the traveling part so as to be movable up and down, and transplants the seedling into the field by the transplanted part pulled by the traveling part,
A seedling transplanter that enables transmission of power from the engine provided in the traveling part to the input shaft of the transplanting part via the transmission mechanism, and provides an inter-strain adjustment mechanism in the middle of the transmission mechanism. Because
A clutch case is provided in the middle of the transmission mechanism in the vicinity of the inter-stock adjustment mechanism, and the inter-mechanism adjustment mechanism is linked to the clutch mechanism disposed in the clutch case, and the clutch mechanism is controlled by the inter-stock adjustment mechanism. The seedling transplanting machine is characterized in that the power is intermittently transmitted from the engine to the transplanted part by adjusting the connection / disconnection timing of the engine. The inter-stock adjustment mechanism projects the output shaft and the input shaft in parallel from the clutch case, and winds a transmission belt between the pulley attached to the protruding end of the output shaft and the split pulley attached to the protruding end of the input shaft. The tension roller is in contact with the middle of the transmission belt so as to be able to adjust the pressure, and an adjusting means for adjusting the pressure of the tension roller is extended upward.
The seedling transplanter according to claim 2, wherein the tip of the adjusting means is disposed in the vicinity of the driver's seat of the traveling unit.

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