JP2010104255A - Seedling transplanter also used for sowing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a seedling transplanter for transplanting seedlings in furrows, into the seedling transplanter also used for the sowing in order to also preferably perform sowing works. <P>SOLUTION: The seedling transplanter also used for the sowing is constituted by providing a seed-feeding device 72 above a seedling-feeding device 42 for feeding the seedlings one by one to a seedling-transplanting device 4 by conveying a plurality of seedling-housing bodies 45 along a loop-formed lateral conveying passage, extending the end of a seed guide 74 of the seed-feeding device until crossing the seedling-housing bodies 45 in a side view, forming a U-shaped groove 75 allowing the passage of the end of the seed guide 74, at the upper end peripheral part of the seedling-housing bodies 45, and providing a seed guide 76 for sliding down the falling seeds from the seed guide 74 to the vicinity of turing fulcrum of a bottom lid 44 in the seedling-housing bodies 45. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  TECHNICAL FIELD The present invention relates to a sowing and seedling planting machine that enables seeds such as sweet corn to be sown in a cocoon by a seedling planting machine that lays a seedling on a cocoon.

Japanese Unexamined Patent Application Publication No. 2007-43958 discloses a seedling planting machine that supplies fertilizer and chemicals simultaneously with planting seedlings using a seedling planting machine.
This seedling planting machine has a main supply device that sequentially transfers a plurality of supply cups to a main supply position along a loop-shaped lateral transfer path, and a plant that receives seedlings that fall from the supply cup at the main supply position and that is planted on a cocoon. And a sub-feeding device that feeds fertilizers and medicines from above to the supply cup on the upper transfer side from the main supply position.
JP 2007-43958 A

  The seedling planting machine has a configuration for planting fertilizers and drugs into seedlings together with seedlings, and does not consider sowing only seeds into seedlings. For this reason, if seeds are supplied to the supply cup without seedlings to be planted, the seeds are dispersed without the supply cups, and when the seeding operation is carried out as it is with the planting device, the seeds are scattered without being placed in the groin. Become.

  Therefore, in the present invention, it is an object to remodel a seedling planting machine for planting seedlings into a cocoon into a sowing and seedling planting machine so that the sowing work can be performed well.

The problems of the present invention are solved by the following technical means.
According to the first aspect of the present invention, the seed supply device 72 is provided above the seedling supply device 42 that transfers the plurality of seedling containers 45 along the loop-shaped lateral transfer path and sequentially supplies the seedlings to the seedling planting body 4. Provided, the tip of the seed guide 74 of the seed supply device 72 is extended until it intersects the seedling container 45 in a side view, and a U groove 75 that allows the seed guide 74 to pass through the tip is provided at the upper peripheral edge of the seedling container 45 In the seedling container 45, a seed guide 76 that slides the seed falling from the seed guide 74 near the rotation fulcrum of the bottom lid 44 is provided to constitute a sowing and seedling planting machine.

  With this configuration, seeds of the seed supply device 72 are supplied to the seedling container 45 through the seed guide 76, fall to the vicinity of the pivot point of the bottom lid 44 by the seed guide 76, and when the bottom lid 44 is opened, seedling planting is performed. Seeds are supplied to the body 4, and the seedling planting body 4 is used to plant seeds.

  In the invention according to claim 1, the seed is reliably supplied to the seedling container 45 at the position where the seed guide 76 of the seed supply device 72 enters the seedling container 45, and the bottom cover 44 of the seedling container 45 is rotated. The seed guide 76 slides down near the fulcrum and is further supplied to the seedling planting body 4 so that the seedling planting body 4 seeds the seedlings in an orderly manner. Is done.

  A seeding and seedling planting machine as one embodiment of the present invention will be described below. In the following description of the illustrated example, when referring to the front or rear, the side on which the steering handle 2 is disposed is referred to as the rear, and the opposite side, that is, the side on which the engine 5 is disposed is referred to as the front. When the term “right” or “left” is used, the right hand side is referred to as the right and the left hand side is referred to as the left when viewed from an operator standing at the front of the body at the rear of the body.

  The seedling planting machine is provided with two sets of right and left beak-shaped seedling planting bodies 4 and 4 that can be opened and closed connected to a link mechanism 3 that is driven to move up and down on a machine body that includes a traveling device 1 and a steering handle 2. It has a configuration.

  In the illustrated example, the traveling device 1 includes an engine 5, a pair of left and right rear wheels 6 and 6 that are driven and rotated by transmission of the power of the engine 5, and left and right wheels that are rotatably supported in front of the wheels 6 and 6. A pair of front wheels 7 and 7 is provided.

  A mission case 8 is disposed at the rear of the engine 5, and the mission case 8 has a case portion extending from the left side of the engine 5 to the left side of the engine 5, and this is connected to the left side of the engine 5. The output shaft of the engine 5 enters the case portion, and the power is transmitted to the transmission mechanism (the traveling part system transmission transmission part C1 and the working part system transmission transmission part C2) in the transmission case 8. The transmission cases 9 and 9 are rotatably attached to the left and right sides of the transmission case 8, and the tip ends of the wheel drive shafts extending from the transmission case 8 to the left and right outer sides at the rotation centers of the transmission cases 9 and 9. The power for traveling that has entered and has passed through the traveling part system transmission transmission C1 in the transmission case 8 is transmitted to the transmission mechanism in the transmission cases 9 and 9. The traveling power is transmitted to the rear wheel axles 10, 10 extending rearward of the machine body and projecting to the rear end via the transmission mechanism in the transmission cases 9, 9, and the rear wheels 6, 6 are driven to rotate. It is supposed to be.

  Also, upwardly extending arms 11, 11 are integrally attached to the attachment parts of the transmission cases 9, 9 to the transmission case 8, and this is the tip of the piston rod of the lifting hydraulic cylinder 12 fixed to the transmission case 8. Are connected to the left and right sides of a balance rod 13 that is pivotably mounted around a vertical axis. The right side of the connecting portion is connected by a rod 14, and the left side is connected by a left / right horizontal control hydraulic cylinder 15 which can be expanded and contracted.

  When the lifting / lowering hydraulic cylinder 12 is actuated and the piston rod projects rearward, the left and right arms 11 and 11 are rotated rearward, and accordingly the transmission cases 9 and 9 are rotated downward, and the airframe. Rises. On the contrary, when the piston rod of the elevating hydraulic cylinder 12 is retracted forward, the left and right arms 11 and 11 are rotated forward, and accordingly the transmission cases 9 and 9 are rotated upward so that the aircraft is Descend. The lifting hydraulic cylinder 12 is configured to operate the airframe to a set height with respect to the height of the heel surface based on the detection result of the height sensor S that detects the height of the heel surface relative to the airframe. In addition, it is configured to operate so as to raise or lower the aircraft by human operation of the operation tool L arranged in the vicinity of the steering handle 2.

  Further, when the left / right horizontal control hydraulic cylinder 15 expands / contracts, the balance rod 13 rotates around the vertical axis connected to the tip of the piston rod of the lifting hydraulic cylinder 12 at the center of the left / right to transmit left / right transmission. Cases 9 and 9 are moved up and down alternately to incline the aircraft from side to side. The left / right horizontal control hydraulic cylinder 15 is configured to operate so that the airframe is horizontally horizontal based on a detection result of a sensor that detects the right / left inclination of the airframe relative to the left / right horizontal.

  The left and right front wheels 7 and 7 are fixed to the side of the lower end portion of the arm portion extending below the left and right side portions of the front wheel support frame 16 attached to the left and right central positions below the engine 5 so as to be rotatable around the front and rear axis. The front wheel axles 17 and 17 are rotatably attached. Accordingly, the left and right front wheels 7 and 7 are capable of rolling around the longitudinal center of the left and right center of the aircraft.

  The steering handle 2 is attached to a rear end portion of a body frame 2b having a front end portion fixed to the mission case 8. The airframe frame 2b is disposed at a position deviated from the right and left center of the airframe to the right side and extends rearward, and extends obliquely rearward and upward from the front and rear intermediate portion. The steering handle 2 extends rearward from the rear end portion of the body frame 2b to the left and right, and the rear end portions thereof serve as grip portions 2a and 2a of the steering handle 2. The left and right grip portions 2a, 2a of the steering handle 2 are set to an appropriate height so that the operator can easily grip the grip portions 2a, 2a with hands.

  Although the traveling device 1 has a four-wheel configuration, the traveling device 1 may have a two-wheel configuration including only a pair of left and right drive wheels, or may be a pressure-reducing wheel that rolls on the upper surface instead of the front wheels. Moreover, it is good also as a crawler type traveling apparatus.

Next, the link mechanism 3 and the seedling planting body 4 will be described.
The link mechanism 3 is attached to a planting transmission case 18 that includes a transmission mechanism that receives power for driving the seedling transplanting operation unit that has passed through the operation unit transmission transmission unit C2 in the mission case 8.

  As shown in the figure, the planting transmission case 18 is fixed to the first case portion 18a whose front portion is connected to the rear portion of the mission case 8 and extends rearward and obliquely upward therefrom, and the upper left portion of the first case portion 18a. It has the 2nd case part 18b extended from there back. A power transmission mechanism for transmitting power for driving the link mechanism 3 up and down is provided in the first case portion 18a and the second case portion 18b.

  The transmission mechanism built in the first case portion 18a includes an intermittent drive mechanism K for stopping the link mechanism 3 and the seedling planting bodies 4 and 4 at the uppermost position of the raising and lowering movement or at a position near the upper and lower positions for a set time. And a clutch mechanism for stopping the lifting and lowering movement of the link mechanism 3 and the seedling planting bodies 4 and 4. The time for stopping by the intermittent drive mechanism K is adjusted by the inter-change changing transmission section C3 provided on the upper transmission side of the intermittent drive mechanism K, and this adjustment changes and adjusts between the seedling planting stocks by the seedling planting bodies 4 and 4. It has become so.

  The link mechanism 3 includes a first elevating arm 20 that is pivotally connected at two left and right positions of the front shaft 19 that is a front opening / closing fulcrum of the left and right seedling planting bodies 4, 4, and a rear opening / closing of the seedling planting body 4. And a second lifting arm 22 rotatably connected to the left side portion of the rear shaft 21 serving as a fulcrum. And the lower end part of the 1st raising / lowering arm 20 is rotatably connected with the front-end | tip part of the 1st rocking | swiveling arm 23 attached to the attachment axis | shaft extended on the right side from the lower part of the 2nd case part 18b, and can rotate freely. The lower end of the two lifting arms 22 is pivotally connected to the tip of a second swing arm 24 that is swingably attached to a mounting shaft extending to the right side from the lower rear side of the second case portion 18b.

  Further, the intermediate portion of the first lifting arm 20 protrudes from the right side portion of the second case portion 18b and is fixed to the first drive shaft 25 that is driven and rotated, and is rotatable with the tip portion of the first drive arm 26 that is driven and rotated. The intermediate portion of the second elevating arm 22 is connected to the front end portion of the second drive arm 28 that rotates by being fixed to the second drive shaft 27 that protrudes from the rear right side portion of the second case portion 18b and rotates. Connect freely.

  Therefore, when the first drive arm 26 and the second drive arm 28 are driven and rotated by transmission of power by the transmission mechanism in the planting transmission case 18, the first lift arm 20 and the second lift arm 22 are moved up and down while swinging. As a result, the lower ends of the left and right seedling planting bodies 4 and 4 are moved up and down along a closed loop locus T that is long in the vertical direction in a side view. The first drive arm 26 and the second drive arm 28 both rotate counterclockwise when viewed from the left side, and the lower end portions of the left and right seedling planting bodies 4 and 4 are counterclockwise when viewed from the left side. It moves up and down on a closed loop trajectory T.

  Accordingly, when the left and right seedling planting bodies 4 and 4 are moved up and down so as to draw the locus T in the rotation direction while traveling, the lower ends of the seedling planting bodies 4 and 4 at the lower end of the locus T When stabbed in the soil of U, the seedling planting body 4 will not be greatly displaced back and forth with respect to the ridge U, and the seedling can be planted in an appropriate posture without leaving a large planting front and back. . In addition, when the beak-like seedling planting bodies 4 and 4 are lowered to the lowest position, the beak-like seedling planting bodies 4 and 4 open back and forth to release the seedlings in the seedling planting bodies 4 and 4 to the soil of the cocoon U.

  The left and right seedling planting bodies 4 and 4 are each formed in a beak shape extending downward, and are configured to be openable and closable in the front-rear direction. The front beak portions 4F and 4F, which are the front side portions of the beak-shaped portions, are arranged on the rear shaft 21 with the upper side extending rearward in the shape of an arm and the tip portion serving as an opening / closing fulcrum on the rear side of the seedling planting bodies 4 and 4. The rear beak portions 4B and 4B, which are pivotally connected and are rear portions of the beak-shaped portion, have an upper portion extending forward in the shape of an arm, and a tip portion thereof is an opening / closing fulcrum on the front side of the seedling planting bodies 4 and 4 It connects with the front side shaft 19 used as it can rotate freely.

  The front beak portions 4F and 4F have an upper arm-like portion extending rearward and the rear beak portions 4B and 4B upper and an arm-like portion extending forward are respectively a front-side front shaft 19 and a rear-side rear shaft 21. A nut having a shaft portion in the horizontal axis direction is fitted and connected to a long hole provided at the front and rear center position, and one side of the front beak portions 4F and 4F and the rear beak portions 4B and 4B is interlocked with the operation of the other side. So that both can be opened and closed back and forth.

  Further, the front beak portion 4F and the rear beak portion 4B are connected to each other in a direction in which the seedling planting body 4 is closed by a spring. Further, an opening / closing arm 31 for opening and closing the right and left seedling planting bodies 4 and 4 is pivotally connected to a shaft portion where the first lifting arm 20 and the first swing arm 23 are connected to each other, and the opening and closing thereof is performed. A connecting rod 32 connects the distal end portion of the arm 31 and the connecting shaft that connects the arm portions extending upward from the upper portions of the left and right front beak portions 4F and 4F to the left and right.

  At the middle part of the opening / closing arm 31, when the seedling planting bodies 4, 4 are lowered to the lowest position, the first raising / lowering arm 20 is pivotally connected to the distal end of the first driving arm 26. A cam 34 fixed to a fixed shaft and a spring that presses the open / close arm 31 against the cam 34 swing back and forth, the open / close arm 31 rotates back and forth, and when the open / close arm 31 rotates backward, the left and right front sides The beak portions 4F and 4F are rotated upward around the rear shaft 21 that is the rear pivot point, and the rear beak portions 4B and 4B are rotated upward around the front shaft 19 that is the front pivot point. Then, the seedling planting body 4 opens. Then, the seedling planting bodies 4, 4 are released from the opening action of the cam 34 during the ascent and the seedling planting bodies 4, 4 are closed.

  As another example of the seedling planting body 4, the seedling receiving part is constituted by three members of the front guide part and the left and right beak parts that open to the left and right, and the left and right beak parts open to the left and right at the time of planting and the seedlings are planted in the cocoon U. Configuration is also conceivable. The front guide portion is swelled outward and fixed as a pointed tip without opening, and only the right and left beak portions are opened left and right to leave the seedling in the soil. In actual planting, the seedling planting body 4 is lowered while traveling with the traveling device 1. Since the left and right beak parts open and the front guide part moves so as to escape forward as the vehicle moves, the front guide part is opened forward, opening in three directions, and planting of seedlings is improved .

  Although not shown, if an arm that projects the lifting support frame holding the seedling planting bodies 4 and 4 backward and a spring that pulls the tip of the arm toward the grip portion 2a of the steering handle 2 is provided, There is no backlash, and the raising and lowering of the seedling planting bodies 4 and 4 becomes smooth.

  On the upper part of the seedling planting bodies 4, 4, cylindrical guide bodies 35, 35 for guiding the seedlings in the seedling planting bodies 4, 4 are attached. The guide bodies 35, 35 are provided so as to protrude upward from the front shaft 19 and the rear shaft 21 that serve as opening / closing fulcrums of the seedling planting bodies 4, 4. Guide the seedlings to the lower end inside.

  Further, although not shown, an air cylinder that expands and contracts by the movement of the first lifting arm 20 and the second lifting arm 22 is provided, and a nozzle with a bubble directed downward in the inside is provided at the periphery of the seedling container 45. Can be connected by a pipe, and air compressed by an air cylinder can be ejected from the nozzle at the timing when the seedling is put into the seedling container 45, so that the seedling can be satisfactorily stored in the seedling container 45.

  In order to cover the seedlings planted by the seedling planting bodies 4, 4, the four grounded rolling wheels 36, 36, 36, 36 are respectively connected to the rear left and right sides of the seedling planting locations of the left and right seedling planting bodies 4, 4. It is provided in the vicinity of both sides. The grounded rolling wheels 36, 36, 36, 36 are respectively rotated about the horizontal axis on the rear side of the support frames 37, 37, 37, 37 attached to the middle part of the body frame 2 b so as to be rotatable about the left and right axes. It can be freely rotated. The rear part of the two left and right inner frames and the rear part of the two right and left outer frames of the support frames 37, 37, 37, 37 have connecting parts 38, 38 respectively connected to each other. The lower end portions of the rear support rods 40, 40 mounted on the support members 39, 39 at the lower limit lower limit position and mounted so as to be movable up and down are mounted and supported around the horizontal axis. Weights 41, 41 are attached to the rear support rods 40, 40 so as to apply a set pressure to the grounded rolling wheels 36, 36, 36, 36.

  The seedling planting machine configured as described above includes a seedling supply device 42 that supplies seedlings 4 and 4 by dropping seedlings from above. That is, a traveling device 1 that self-propels the aircraft, a seedling planting body 4, 4 that is provided so as to move up and down, accepts seedlings from the upper side and releases seedlings received at the lower level, and the seedling planting body 4, 4 is provided with a seedling supply device 42 that drops and supplies seedlings from above, and the seedling supply device 42 includes a cylindrical body 43 that opens up and down and an opening 43a on the lower side of the cylindrical body 43. A plurality of seedling containers 45 that have a bottom lid 44 that opens and closes and is connected to each other in a loop shape, and the plane of the body in a state that the seedling containers 45 are passed above the seedling planting bodies 4 and 4. A seedling container moving mechanism 46 that rotates around a non-circular loop-like trajectory, and a bottom lid opening mechanism 47 that opens the bottom lid 44 of the seedling container 45... At a position above the seedling planting bodies 4 and 4. The configuration is provided.

  This seedling planting machine operates as follows. The aircraft is self-propelled by the traveling device 1. During traveling, the seedling planting bodies 4 and 4 move up and down, accepting seedlings dropped from the seedling supply device 42 from above when positioned at the upper position, and receiving seedlings received when positioned at the lower position in the field. Release and transplant the seedlings in the field. The seedling supply device 42 includes a plurality of seedling containers 45 having a cylindrical body 43 that opens up and down and a bottom lid 44 that opens and closes a lower opening 43a of the cylindrical body 43. Are connected to each other in a loop shape, and are rotated around a loop-shaped trajectory that is non-circular in plan view of the machine body while passing over the seedling planting bodies 4 and 4 by the seedling container moving mechanism 46. Then, the bottom lids 44 of the seedling containers 45 are opened by the bottom lid opening mechanism 47 above the seedling planting bodies 4 and 4.

  Accordingly, the seedlings accommodated in the seedling container 45 are transferred to the upper position of the seedling planting bodies 4 and 4 by the circumferential rotation of the seedling container 45 and fall there, and are supplied to the seedling planting bodies 4 and 4. The Therefore, this seedling planting machine can carry out the seedling supply work with a margin and can improve the work efficiency.

  The seedling supply device 42 has cylindrical outer peripheral portions 43c... On the outer periphery of the seedling containers 45, and has an engaging portion 48 that engages with the cylindrical outer peripheral portions 43c. A plurality of connecting bodies 49 for connecting the two seedling containers 45 are provided, and the engaging portions 48 of the connecting bodies 49 are rotatably engaged with the cylindrical outer peripheral portions 43c of the seedling containers 45. The plurality of seedling containers 45 are connected to each other so that the adjacent seedling containers 45 are rotatably connected with the cylindrical outer peripheral portions 43c as rotation axes. Accordingly, in the seedling planting machine 45, the seedling container 45 is rotated while the adjacent seedling container 45 is rotated around the cylindrical outer peripheral portion 43c of the seedling container 45. Thus, the variation in the interval between the seedling containers 45 is difficult to occur.

  Further, the seedling supply device 42 attaches bottom lids 44 to the cylindrical bodies 43 of the seedling containers 45 so as to be capable of opening and closing, and attaches the connecting bodies 49 to the seedling containers 45 one by one. A structure in which the seedling receptacles 45 are connected to each other by being integrally attached, and the engaging portions 48 of the coupling bodies 49 are rotatably engaged with the cylindrical outer peripheral portions 43c of the adjacent seedling receptacles 45. It is said.

  In this seedling planting machine, a plurality of the seedling planting bodies 4 and 4 are provided side by side in the left-right direction, and the seedling supply device 42 has a seedling container 45... The seedling container 45... Is configured to rotate around a trajectory having a section SS to be moved, and passes above the plurality of seedling planting bodies 4, 4 juxtaposed side by side in the section SS in which the seedling container 45. It is assumed that a plurality of seedlings are transplanted simultaneously in the field.

  Below, the structure of the seedling container moving mechanism 46 of the seedling supply apparatus 42 is demonstrated. That is, the moving action bodies 51 and 51 around which the seedling containers 45 connected in a loop shape are wound are provided on the left and right sides of the machine body, and the moving action bodies 51 and 51 are driven and rotated. 45... Is configured to move around by drawing a long oval locus to the left and right in the plane view of the aircraft. On the outer periphery of the moving body 51, 51, an engagement recess 52 that engages with the cylindrical body 43 of the seedling container 45 wrapped around the outer periphery is an interval corresponding to the connection interval of the seedling containers 45. A plurality of seedling containers 45 are provided so as to be surely moved.

  The drive structure of the moving action bodies 51 and 51 is such that power is taken out from the transmission path on the lower transmission side of the inter-change change transmission unit C3 on the upper transmission side of the intermittent drive mechanism K that intermittently drives the seedling planting bodies 4 and 4. The moving action bodies 51 and 51 are continuously driven to rotate, and the seedling containers 45 are continuously moved around.

  Specifically, the first rotating shaft 53a that continuously rotates from the left side portion of the first case portion 18a of the planting transmission case 18 is projected, and the transmission shaft 53b is connected to the first rotating shaft 53a via a universal joint, The transmission shaft 53b is transmitted to a transmission case 54 provided on the left side of the machine body, and the left moving action body 51 attached to rotate integrally with a second rotating shaft 55 protruding upward from the transmission case 54 is driven to rotate. It is configured. Also, the first sprocket 56 is attached to the second rotating shaft 55 so as to rotate integrally therewith, and the first sprocket 56 and the second sprocket 58 attached so as to rotate integrally with the rotating shaft 57 of the right moving action body 51. Further, the transmission chain 59 is wound around and the left and right moving action bodies 51 and 51 are both driven and rotated.

  Note that the transmission mechanism in the transmission case 54 has an input shaft 60 projecting to the front side of the transmission case 54 and the front end portion thereof is connected to the rear end portion of the transmission shaft 53 via a universal joint for transmission rotation. In the transmission case 54, the first bevel gear 61 formed at the rear end portion of the input shaft 60 is meshed with the second bevel gear 62 attached so as to rotate integrally with the second rotating shaft 55 of the moving action body 51. Provided.

  Accordingly, the rotational power transmitted through the transmission shaft 53 is converted into the rotation around the second rotation shaft 55 in the vertical direction in the transmission case 54 to transmit and rotate the movable acting body 51. Yes. In this example, the rotational movement direction D of the seedling containers 45 is set so that the seedling containers 45 moved to the rear side of the seedling supply device 42 are moved to the right side. An operator can easily supply seedlings in a seedling supply operation mode in which the seedling supply device 42 is standing on the left side at the rear side position and supplied to the seedling containers 45 with the right hand.

  In this example, a plurality of seedling planting bodies 4, 4 are provided side by side on the left and right sides of the machine body, and the power for driving and rotating the moving action bodies 51, 51 of the seedling supply device 42 is input to the left and right sides thereof. The input shaft 60, the first bevel gear 61, and the second bevel gear 62, which are transmitted to the second rotating shaft 55 of the moving body 51 on one of the left and right sides, are provided so that the second rotating shaft 55 protrudes upward and is supported for driving rotation. The transmission case 54 is provided.

  As described above, the driving power for driving the seedling supply device 42 is from the transmission upper side of the intermittent drive mechanism K that intermittently drives the seedling planting bodies 4 and 4 from the transmission path on the lower transmission side of the inter-change change transmission unit C3. It is taken out. Thereby, the seedling planting bodies 4 and 4 are intermittently driven, and the seedling supply device 42 is in a seedling planting machine configured to be continuously driven, and the seedling planting bodies 4 and 4 are located above the lifting trajectory T. In the configuration in which the inter-strain changing transmission unit C3 is provided on the transmission upper side of the intermittent drive mechanism K so that the time for intermittent stopping can be changed to change between the seedling planting stocks, the seedling supply device 42 is configured as described above. Since the power to drive is taken out, even if the intermittent stop time of the seedling planting bodies 4 and 4 that are intermittently driven is changed to change between the seedling planting stocks, the seedling supply that is continuously driven is correspondingly changed Since the operation speed of the device 42 is also changed, the seedling supply from the seedling supply device 42 to the seedling planting bodies 4 and 4 is performed satisfactorily. Even so, seedling transplanting work can be performed well.

  Further, the first clutch means CL1 for turning on and off the transmission to the seedling supply device 42, the power for driving the seedling supply device 42 on the upper transmission side of the intermittent drive mechanism K, and the lower transmission side of the inter-change change transmission unit C3 The second clutch means CL2 that is provided in the transmission path from the first to the second rotating shaft 55 that rotationally drives the moving action body 51, while allowing the transmission to the seedling planting bodies 4 and 4 to be continuously cut off is intermittently provided. The drive mechanism K is provided. The first clutch means CL1 on the seedling supply device 42 side and the second clutch means CL2 on the seedling planting bodies 4 and 4 side are simultaneously cut by one artificial operating tool (such as an operating lever) provided on the steering handle 2 side. It is configured to be operated and entered.

  The intermittent drive mechanism K includes a one-rotation stop mechanism for automatically stopping the seedling planting bodies 4 and 4 by performing a one-cycle planting operation, and starting a one-cycle planting operation of the seedling planting bodies 4 and 4 by the one-rotation stopping mechanism. A one-rotation start mechanism for performing the operation is provided, and the operation timing of the one-rotation start mechanism is adjusted by the inter- stock change transmission unit C3.

  Therefore, the seedling planting bodies 4 and 4 are continuously stopped at the set position only by changing the positional relationship between the action part of the one-rotation start mechanism and the non-action part of the one-rotation stop mechanism to a position that does not act. it can. Thus, if said 2nd clutch means CL2 is comprised using the intermittent drive mechanism K, the seedling planting bodies 4 and 4 can be stopped in a setting position, and simplification of a structure can be achieved.

  On the other hand, since the seedling supply device 42 is continuously driven, the first clutch means CL1 is provided on the transmission upper side of the intermittent drive mechanism K, and the clutch CL2 on the seedling planting body 4, 4 side is provided as described above. If the intermittent drive mechanism K is used, it cannot be shared with the clutch CL2. However, seedling planting is achieved by configuring the first clutch means CL1 on the seedling supply device 42 side and the second clutch means CL2 on the seedling planting bodies 4 and 4 side to simultaneously cut and enter with one artificial operating tool. While taking advantage of the intermittent drive mechanism K as described above for the clutch CL2 on the body 4 and 4 side, the seedling supply device 42 that is continuously driven is stopped and the driving is restarted. In addition, it can be performed in accordance with the timing of driving resumption.

  The first clutch means CL1 on the seedling supply device 42 side includes a mechanism that automatically cuts the power when the transmission load exceeds a set value. In addition, the working section transmission path before the power splits to the seedling planting body 4 and 4 side and the seedling supply device 42 side also has a mechanism that automatically cuts the power when the transmission load exceeds a set value. Three clutch means CL3 are provided.

  And the set value of the transmission load that automatically cuts the power in the third clutch means CL3 is larger than the set value of the transmission load that automatically cuts the power in the first clutch means CL1 on the seedling supply device 42 side. A high value is set. Accordingly, an overload state in which an operator or the like accidentally contacts the seedling supply device 42 during the seedling supply operation and forcibly stops the orbital movement of the seedling container 45 is driven by the seedling supply device 42. Even if it occurs in the system, the first clutch means CL1 is operated, so that the drive system of the seedling supply device 42 can be appropriately prevented from being damaged.

  The third clutch means provided in the working part system transmission path before the power splits between the seedling planting body 4 and 4 side and the seedling feeding apparatus 42 side automatically shuts off the transmission to the seedling feeding apparatus 42. When it is intended to operate at CL3, it is suitable to drive the seedling planting bodies 4 and 4 in which the transmission load is larger than the driving system of the seedling supply device 42 in order to enter the soil in order to plant seedlings in the field. It will no longer be possible to continue. However, by configuring as described above, the driving of the seedling planting bodies 4, 4 and the seedling supply device 42 can be continued properly, and the overload and the seedling generated on the seedling planting bodies 4, 4 can be maintained. The overload generated on the supply device 42 can be released accurately by the first clutch means CL1 and CL3, respectively, and both drive systems of the seedling planting bodies 4 and 4 and the seedling supply device 42 are protected appropriately. be able to.

  The support structure of the seedling supply device 42 is configured as follows. An aircraft that extends from the front side of the fuselage where the engine 5 and the transmission case 8 are arranged between the left and right rear wheels 6 and 6 and the front wheels 7 and 7 to the rear side of the fuselage, and the rear side is raised rearward. The frame 2b is provided and the steering handle 2 is attached to the rear end portion of the airframe frame 2b, and the first support frame 63 extending backward from the airframe front side toward the upper side of the airframe is provided. The rear side of the frame 63 is connected to the body frame 2b, a second support frame 64 extending from the support frame 63 to the left and right outer sides is provided, and connected to the left and right sides of the second support frame 64 in a loop shape. The seedling containers 45 are configured to support the rotating shafts of the left and right moving action bodies 51 and 51 that move around the circumference by drawing a long oval locus to the left and right in plan view.

  Accordingly, the first support frame 63 is disposed near the center of the airframe together with the airframe frame 2b on which the steering handle 2 is mounted, and is connected to the airframe frame 2b to form a rigid and rigid frame structure. The left and right moving action bodies 51 extend the second support frame 64 from the first support frame 63 thus configured to the left and right outer sides, and move the seedling containing bodies 45 around the left and right sides thereof. , 51 is supported, the support structure of the seedling supply device 42 has a simple and sufficient strength, and the body can be made compact and light.

  Further, the second support frame 64 is divided into a base frame portion 64a on the side connected to the first support frame and a support portion side frame portion 64b on the side supporting the rotating shafts of the moving working bodies 51 and 51. The support part side frame part 64b is provided so as to be movable and adjustable in the left-right direction with respect to the base part side frame part 64a. This makes it easy to appropriately adjust the tension state of the seedling containers 45 connected in a loop around the outer periphery of the left and right moving action bodies 51, 51, and facilitates assembly and maintenance.

  In the seedling supply device 42, the seedling containers 45 are provided with guide bodies 65, 65, 65 for guiding the movement along the circular movement trajectory inside and outside the circular movement trajectory of the seedling container 45. . On the other hand, the seedling containers 45 are formed with protrusions 66 that protrude inward and outward of the orbital movement trajectory, and the guide bodies 65, 65, 65 are located above the protrusions 66 and the seedling container 45. Are arranged so as to be sandwiched between the inside and outside of the circular movement locus.

  Thus, the orbital movement of the seedling containers 45 is performed accurately and smoothly so that the seedling containers 45 pass above the seedling planting bodies 4 and 4 in the section SS where the seedling containers 45 move linearly in the left-right direction. In the arrangement, the seedling container 45... Swings back and forth during the circular movement, and the seedling container 45... Shifts back and forth when passing over the seedling planting bodies 4 and 4. It can prevent that the seedling supply with respect to 4 and 4 is not performed correctly. Moreover, since the guide bodies 65, 65, 65 are located above the protrusions 66 formed in the seedling containers 45, the seedling containers 45 are prevented from being lifted during the circular movement, and the seedling containers 45 ... The circumferential rotation of the lens is accurately performed.

  Below the orbital movement trajectory of the seedling containers 45 ..., the seedling containers 45 ... are opened by the downward rotation while the seedling containers 45 ... are moving around and other than the positions above the seedling planting bodies 4, 4. A support 67 that supports the bottom cover 44 in a closed state is provided along a circular movement locus. Therefore, the above-described configuration of the guide bodies 65, 65, 65 and the projecting portion 66 is the seedling that the bottom cover 44 provided at the bottom of the seedling container 45 is opened during circular movement and accommodated in the seedling container 45. This prevents the seedling from being damaged by protruding from the gap generated by the opening of the bottom lid 44.

  Moreover, in this example, since the said protrusion part 66 was formed in the connection body 49 ... integrally provided in each of the seedling container 45 ..., the structure can be simplified. The support body 66 and the guide bodies 65, 65, 65 are attached to and supported by an attachment member 68 attached to the first support frame 63.

  The inner part of the orbital movement trajectory of the seedling container 45... Of the seedling supply device 42 is covered with the governor body 69 on the upper side. Therefore, when the worker supplies seedlings from the rear side of the seedling supply device 42 to the seedling container 45..., The seedlings are temporarily placed on the cover body 69 and placed on the cover body 69. The seedlings can be easily taken out by the operator who supplies the seedlings to the seedling containers 45, so that the seedling supply work can be easily performed and the work efficiency can be improved. Since the cover body 69 of the present example is configured to cover almost the entire inner side of the orbital movement trajectory of the seedling container 45, the seedling placed on the cover body 69 is unlikely to fall. Further, since the upper surface of the cover body 69 is formed to be a flat surface, the seedling placed on the cover body 69 is unlikely to move to a place where it is difficult to take out, and workability can be improved. Furthermore, if the upper surface of the cover body 69 is formed to have a rough surface, the seedlings are less likely to slip, and the above-described effect becomes more remarkable.

Hereinafter, the bottom lid opening mechanism 47 that opens the bottom lids 44 of the seedling containers 45 of the seedling supply device 42 at positions above the seedling planting bodies 4 and 4 will be described.
First, as described above, below the orbital movement trajectory of the seedling container 45 ..., the seedling container 45 ... is being moved around the seedling container 45 ... and other than the position above the seedling planting bodies 4, 4, A support 67 that supports the bottom cover 44 that is opened by rotating downward is closed along a circular movement locus. The support 67 is provided at a position above the seedling planting bodies 4 and 4 so as to be displaced to a position retracted from the lower region of the bottom lid 44 so that the bottom lid 44 can be rotated downward to be opened. . Further, the mounting portion 50 to which the bottom lid 44 is rotatably attached is configured to be on the upper side of the circumferential movement direction D of the seedling containers 45.

  Furthermore, this support body 67 is set with a seedling container 45 for supplying seedlings corresponding to each of the left and right seedling planting bodies 4, 4. For example, as in this example, the seedling planting body 4, 4 are arranged side by side on the left and right so that two rows can be planted at the same time, as described above, the seedling container 45 that supplies the right seedling planting body 4 and the left seedling planting body 4 are supplied by dropping. The seedling containers 45 to be connected are alternately connected.

  Accordingly, the bottom cover 44 of the seedling container 45 is opened only when the seedling container 45 that is set to be supplied to the right seedling planting body 4 passes above the right seedling planting body 4. In addition, the bottom cover 44 of the seedling container 45 is opened only when the seedling container 45 set so as to be dropped and supplied to the left seedling planting body 4 passes over the left seedling planting body 4. There is a need. For this reason, what provided the outer protrusion part 44a which protrudes outside with respect to the circular movement locus | trajectory of the seedling container 45 ... in the bottom cover 44, and what has the inner protrusion part 44b which protrudes inside are provided, and an outer protrusion part The bottom lid 44 provided with 44a and the bottom lid 44 provided with the inner projecting portion 44b are alternately provided with respect to the seedling containers 45. And the seedling container 45 set so as to drop and supply the seedling planting body 4 on the right side (the upper side in the circumferential movement direction D) that passes above the seedling planting body 4 is the right seedling planting body 4. When passing above, the support 67 is retreated from the position supporting the protrusion 44a or 44b and displaced to a position supporting the inner protrusion 44b or the outer protrusion 44a protruding to the opposite side. To be provided.

  In addition, the seedling container 45 set so as to drop and supply the seedling planting body 4 on the left side (the lower side of the circumferential movement direction D) that will pass above the seedling planting body 4 is located above the seedling planting body 4 on the left side. The support 67 is retracted from a position for supporting the inner protrusion 44b or the outer protrusion 44a and supports the outer protrusion 44a or the inner protrusion 44b protruding to the opposite side. Provide to be displaced to the location. Thereby, when the seedling container 45 set so as to be dropped and supplied to the right seedling planting body 4 passes above the right seedling planting body 4, the bottom lid 44 of the seedling container 45 can be opened, and When the seedling container 45 set so as to be dropped and supplied to the left seedling planting body 4 passes above the right seedling planting body 4, the bottom cover 44 of the seedling container 45 is supported in a closed state. .

  In addition, when the seedling container 45 set so as to drop and supply to the left seedling planting body 4 passes over the left seedling planting body 4, the bottom lid 44 of the seedling container 45 can be opened, and When the seedling container 45 set so as to drop and supply to the right seedling planting body 4 passes above the left seedling planting body 4, the bottom lid 44 of the seedling container 45 is supported in a closed state. Therefore, if this structure is adopted, the bottom lid 44 of the seedling container 45... Moved to the upper position of the left and right seedling planting bodies 4, 4 is supported by the support 67 corresponding to the seedling planting body 4 to be supplied with seedlings. The support state is released and the opening operation is performed. Therefore, the seedling can be properly supplied to the left and right seedling planting bodies 4 and 4 so that the seedling transplanting operation can be performed satisfactorily.

  Furthermore, in this example, even if the seedling container 45 moves to a position above the seedling planting bodies 4, 4, the bottom cover is raised until the seedling planting bodies 4, 4 are raised to a position located directly below the seedling housing body 45. 44 is supported in a closed state, and when the seedling planting bodies 4 and 4 are raised to a position located directly below the seedling container 45, the support state of the bottom lid 44 is released and the bottom lid 44 is opened. A support 70 is provided.

  The movable support 70 is provided so as to be movable between a bottom lid support position for supporting the bottom lid 44 in a closed state and a bottom lid non-support position for allowing the bottom lid 44 to be opened. The movable support 70 moves from the bottom cover support position to the bottom cover non-support position by contacting with the lift members 71 and 71 that move up and down, and when the lift members 71 and 71 are not in contact with each other, an elastic member such as a spring is used. It is comprised so that it may be located in a bottom cover support position. Therefore, even if the seedling planting bodies 4 and 4 are intermittently operated by the intermittent drive mechanism K, the seedling planting bodies 4 and 4 are configured so that the seedling planting bodies 45 continuously move around. The bottom lid 44 is opened after being lifted up to a position located directly below, so that the seedling is supplied from the seedling container 45 to the seedling planting bodies 4 and 4 in a favorable manner.

  By the way, in this example, the seedling planting bodies 4 and 4 are arranged side by side on the left and right so that two seedlings can be planted at the same time. A lid (not shown) for closing the upper openings 45b of the seedling containers 45 set so as to supply seedlings is mounted. Thereby, it is possible to easily supply seedlings only to the seedling container 45... Which is set to supply seedlings to the right and left side seedling planting bodies 4 to be planted, and easy to double-row and single-row planting. It will be something that can be done. In addition, when the lower part of the seedling planting body 4 is configured to be detachable from the upper part and single-line planting is performed as described above, if the lower part of the seedling planting body 4 that is not planted is removed, the seedling that is not planted The planted body 4 does not form a hole in the field scene, and better single-planting is possible.

  In the seedling planting machine, a seedling base 90 for preliminarily placing seedlings to be supplied to the seedling supply device 42 is attached to the front side of the seedling supply device 42 in the upper part of the machine body. The operator collects seedlings from the seedling stand 90 and supplies them to the seedling supply device 42.

FIG. 9 to FIG. 12 show modified examples when the seedling planting machine is used as a seeding machine.
A seed supply device 72 is provided on a machine frame of the seedling supply device 42 so that a seed guide 74 of the seed supply device 72 enters the seedling container 45. Further, the seedling container 45 is formed with a notch 75 at the upper peripheral edge so as not to hit the seed guide 76. The position of the seed supply device 72 is on the left side of the section SS where the seedling container 45 moves linearly, and the seed motor 73 drops and supplies seeds in the seed hopper 72a to the seedling container 45 one by one or two. Like that. If the worker sees that the seeds are not sufficiently delivered, the seeds that are insufficient can be replenished before the seedling container 45 moves onto the seedling planting body 4.

  Inside the seedling container 45, a first seed guide 76 having a funnel-shaped guide hole 76a is provided. The lower side of the guide hole 76a is close to the pivot side of the bottom lid 44. Further, a drop groove 77 is formed on the inner side of the bottom lid 44 corresponding to the lower end of the guide hole 76a so that seeds falling from the seed supply device 72 are not dispersed.

  Furthermore, a front second seed guide 79F and a rear second seed guide in which a funnel-shaped half guide hole 78 is formed in the front beak portion 4F and the rear beak portion 4B of the seedling planting body 4 toward the lower end. 79B is attached.

  With the above configuration, the seed fed from the seed supply device 72 is reliably supplied to the seedling container 45, and the guide hole 76a of the first seed guide 76, the drop groove 77 of the bottom lid 44, and the front second seed guide 79F. The seedling planted body 4 is dropped and supplied through the half guide holes 78 of the rear second seed guide 79B without being dispersed into the planting holes formed in the ridge U.

The first seed guide 76, the front second seed guide 79F, and the rear second seed guide 79B are removable, and can be used as a seedling planting machine by being removed.
FIGS. 13 and 14 show another embodiment of the seedling container 45, in which a plurality of connection holes 80 are provided in the connection portion 82 of the connection body 49 that fits the cylindrical body 43, and the overlapping connection portion 82 is connected to the connection pin 81. It is connected with. The pitch interval of the seedling container 45 can be changed by inserting the connecting pin 81 into another connecting hole 80 and connecting them. When the pitch interval is changed, the moving action body 51 having the engaging recess 52 that engages with the cylindrical body 43 is also replaced with a fitting engagement recess having a pitch interval. The pitch interval of the seedling container 45 is changed when changing the seedling planting interval or the sowing interval to the ridge U.

  FIG. 15 shows a guide for the moving action body 51 to hold down the protruding portion 66 of the seedling container 45 by setting the engagement position of the moving action body 51 to the seedling container 45 to the cylindrical outer peripheral portion 43 c on the upper side of the connecting body 49. The structure is also configured to act as the body 65, and the structure is simplified by eliminating the need for the inner guide body 65, which has been conventionally required. With this configuration, the guide body 65 that holds the protrusion 66 in the section SS in which the seedling container 45 moves linearly can be moved and adjusted.

It is a side view of a seedling planting machine. It is a top view of a seedling planting machine. It is explanatory drawing which shows the transmission structure of a seedling planting machine. It is a perspective view which shows the connection structure of a seedling container. It is a top view which shows a part of seedling supply apparatus. It is a cross-sectional side view which shows a part of seedling supply apparatus. It is a front view which shows the seedling supply part from a seedling supply apparatus to a seedling planting body. It is a top view which shows the seedling supply part from a seedling supply apparatus to a seedling planting body. It is a side view of the seedling planting machine remodeled as a seeding machine. It is said partially expanded side view. It is said partially expanded front view. It is said partially expanded side view. It is an expanded side sectional view of another Example seedling container. It is an enlarged plan view of another Example seedling container. It is front sectional drawing of another Example seedling supply apparatus.

Explanation of symbols

4 seedling planting body 42 seedling supply device 44 bottom lid 45 seedling container 72 seed supply device 74 seed guide 75 U groove 76 seed guide

Claims (1)

  A seed supply device (72) is provided above the seedling supply device (42) for transferring a plurality of seedling containers (45) along the loop-shaped lateral transfer path and sequentially supplying the seedlings to the seedling planting body (4). The U-groove (75) that extends the tip of the seed guide (74) of the seed supply device (72) until it intersects the seedling container (45) in a side view and allows the tip guide (74) to pass through the tip. Is formed on the periphery of the upper end of the seedling container (45), and the seed guide (45) slides the seed falling from the seed guide (74) near the pivot point of the bottom lid (44). 76) Seedling and seedling planting machine.

Images