JP2014135946A - Seedling planting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling planting device capable of suppressing abrasion of a member by preventing seizure caused by supply deficiency of lubricant.SOLUTION: A seedling planting device 60 includes: a seedling placement base 51 on which a seedling to be planted in a field is placed; a planting mallet 61 for planting the seedling in the field, while rotating; a seedling capture finger 81 for capturing the seedling from the seedling placement base 51; an extrusion cam 82 rotatably and internally provided in the planting mallet 61; an extrusion arm 91 that is rotatably and internally provided in the planting mallet 61, comes into contact with the extrusion cam 82 in a prescribed area of the rotating extrusion cam 82 and is separated from the extrusion cam 82 in the other prescribed area; an extrusion fork 95 that is operated with the turning of the extrusion arm 91 and pushes out the seedling captured by the seedling capture finger 81 and moves the seedling to the field; and a lubricating groove 85 formed in the extrusion cam 82 such that the lubricant injected inside the planting mallet 61 can move.

Description

  The present invention relates to a seedling planting apparatus.

  The seedling transplanting machine for planting seedlings placed on the seedling placing table scrapes off the seedlings from the seedling placing stand, and has a seedling planting device having a planting pot for planting the scraped seedlings on the field. The seedling planting apparatus can perform seedling planting work.

  For example, the seedling planting device provided in the seedling transplanting machine described in Patent Literature 1 and Patent Literature 2 includes two planting ridges that take seedlings while rotating as the rotary case rotates and plant seedlings in the field. ing. This planting ridge has an extruding mechanism having a seedling picking claw fixed to the planting pad and an extrusion claw for pushing out the seedling from the seedling picking nail. The seedling picking nail scrapes the seedling from the seedling mounting table by a predetermined amount. When they are taken into the soil, the pushing claws are activated almost simultaneously to push out the seedlings, so that the seedlings can be planted in the field.

  These seedling extruding mechanisms include an extruding cam that rotates in accordance with the rotation axis of the planting rod, an extruding arm that contacts or separates the extruding cam according to the rotational state of the extruding cam, and an extrusion claw having an extrusion claw. A fork and an extrusion spring for applying a biasing force to the extrusion fork are provided. When an implant cam having such an extruding mechanism releases the contact state between the push cam and the push arm due to the rotation of the push cam associated with the rotation of the rotary shaft of the pot, the push arm is attached to the push spring. The seedling is planted by rotating by force, sliding the extrusion fork forward, and allowing the root of the seedling supported by the seedling picking nail to enter the soil. In addition, the interior of the implantation cage is filled with lubricating oil as a lubricant, and each component is immersed in the lubricating oil.

JP 2007-089515 A JP 2001-299029 A

  However, depending on the state of the structural members of the extrusion mechanism inside the planting ridge, the lubricating oil may not easily enter the lubrication part of the structural member, and seizure occurs due to the lack of lubricating oil, so There are concerns about being interrupted. In addition, due to the lack of lubricating oil, friction due to contact between members becomes strong, wear of the members is accelerated, and durability may be reduced. As described above, the conventional seedling planting device including the extrusion mechanism has room for improvement in lubrication performance.

  This invention is made | formed in view of the above, Comprising: It aims at providing the seedling planting apparatus which can prevent the burning resulting from insufficient supply of a lubricant, and can suppress wear of a member.

  In order to solve the above-described problems and achieve the object, a seedling planting apparatus according to claim 1 of the present invention includes a seedling mounting table (51) for mounting seedlings to be planted in a field, and the seedling while rotating. A planting basket (61) for planting the seedling in the field, a seedling removing member (81) mounted on the outside of the planting basket (61) and scraping off the seedling from the seedling mounting table (51), and the planting An actuating member (82) that is rotatably installed in the rod (61), and the actuating member within a predetermined range of the actuating member (82) that is rotatably installed in the implanting rod (61). The pusher arm (91) that contacts (82) and moves away from the actuating member (82) in another predetermined range, and operates as the pusher arm (91) rotates, and the seedling removing member (81) The extrudate (95) for extruding the seedling taken by the plant and moving it to the field; 61) communicating portions (85, 140, 145, 150) formed on at least one of the actuating member (82) and the pusher arm (91) so that the lubricant injected into the interior of the actuator is movable. It is characterized by providing.

  Moreover, invention of Claim 2 is a seedling planting apparatus of Claim 1, WHEREIN: A rotary case (63) provided with the said several planting basket (61), and the said planting basket (61) are rotated. A rotary shaft (65) to be implanted, and a push spring (96) for urging the push arm (91) in a direction to contact the actuating member (82), the actuating member (82) comprising: It is attached to the rotary shaft (65) of the implantation rod, and the communication portions (145, 150) are formed at least on the push arm (91).

  Further, the invention according to claim 3 is the seedling planting device according to claim 1 or 2, wherein the operating member (82) contacts the outer peripheral surface while sliding on the push-out arm (91), An operating surface (83) for rotating the push arm (91) by applying an actuating force to the push arm (91), and the push arm (91) without contacting the push arm (91). A non-operating surface (84) that does not apply an operating force to the operating member (82), and the communication portion (85) is arranged on the operating surface (83) of the operating member (82) in the sliding direction. It is characterized by being formed along.

  Further, the invention according to claim 4 is the seedling planting device according to claim 1 or 2, wherein the operating member (82) contacts the outer peripheral surface while sliding on the push arm (91), An operating surface (83) for rotating the push arm (91) by applying an actuating force to the push arm (91), and the push arm (91) without contacting the push arm (91). A non-actuating surface (84) that does not apply an actuating force to the connecting portion, and the communication part (140) penetrates the actuating member (82) and both ends open to the actuating surface (83). The operating member (82) is formed as a hole to be formed.

  The invention according to claim 5 is the seedling planting device according to any one of claims 1 to 4, wherein the push-out arm (91) contacts the operating member (82) while sliding. And a contact surface (92) to which an operating force is applied from the operating member (82), and the communicating portion is in contact with the contact surface (92) of the push arm (91) in the sliding direction. It is characterized by being formed along.

  The invention according to claim 6 is the seedling planting device according to any one of claims 1 to 5, wherein the push-out arm (91) is a push-out unit (95) for operating the push-out body (95). 93), and the communication portion (150) penetrates the push arm (91) and both ends thereof are on the end of the push arm (91) on the side contacting the operating member (82). The extrusion arm (91) is formed in the extrusion arm (91) as a hole opened to the extrusion part (93) of the extrusion arm (91).

  The invention described in claim 7 is the seedling planting device according to any one of claims 1 to 6, wherein the extrudate (95) is installed in the planting basket (61). A groove (101) is formed in the extruded body (95) that communicates positions on both sides of the bearing member (100) in the operating direction of the extruded body (95). It is characterized by.

  The invention according to claim 8 is the seedling planting device according to claim 7, wherein the groove (101) is formed in a spiral shape with the operating direction of the extruded body (95) as an axis. (95).

  The invention described in claim 9 is the seedling planting device according to claim 3 or 4, wherein the operating member (82) extends from the rotating shaft of the operating member (82) to the operating surface (83). Is larger on the other end side than on one end side in the axial direction of the rotary shaft, and the implant rod (61) has the rotary shaft with respect to the operating member (82). A biasing member that imparts a biasing force in a direction in which the end of the working surface (83) on the side closer to the rotating shaft is in a direction in contact with the push-out arm (91). (160) and the movement of the actuating member (82) in the direction of the rotation axis are fixed at a predetermined position, whereby the contact position of the actuation surface (83) with respect to the push-out arm (91) is determined in the direction of the rotation axis. Lock member (161 for fixing in position) When, characterized in that is provided.

  The seedling planting apparatus according to claim 1 is an operation member that is rotatably installed in the planting basket, or an operation member within a predetermined range of the rotary operation member that is rotatably installed in the planting basket. By forming a communicating portion in which the lubricant injected into the implantation cage can move on at least one of the extrusion arms that are in contact with each other and spaced apart from the operating member within another predetermined range, the lubricant is difficult to spread. Lubricant can also be supplied to the locations. As a result, seizure due to insufficient supply of the lubricant can be prevented, and wear of the member can be suppressed. Moreover, durability can be improved by making it difficult for the member to be worn.

  In addition to the effect of the invention of claim 1, the seedling planting apparatus according to claim 2 is configured to form a communicating portion on the push arm that moves by the seedling planting operation, thereby performing seedling planting work. Since the lubricant can be distributed inside the implant cage, it is possible to prevent the portion where the lubricant is insufficient from being worn or seized, and to improve the durability.

  In addition to the effect of the invention of claim 1 or 2, the seedling planting device according to claim 3 is configured to form a communicating portion on the operating surface of the operating member, thereby allowing a lubricant to enter the communicating portion. Therefore, the lubricant can be supplied to the interior of the implant rod around the operating member as the operating member rotates. Thereby, wear and seizure between the actuating member and the inside of the implantation pot can be suppressed, and durability can be improved.

  In addition to the effect of the invention of claim 1 or 2, the seedling planting device according to claim 4 is formed in the communicating portion by forming the communicating portion on the operating member while avoiding the non-operating surface of the operating member. Since the lubricant can be allowed to enter, the lubricant can be supplied to the interior of the implant rod around the operating member as the operating member rotates. Thereby, wear and seizure between the actuating member and the inside of the implantation pot can be suppressed, and durability can be improved.

  In addition to the effects of any one of the first to fourth aspects, the seedling planting device according to claim 5 operates by forming a communicating portion on the push arm along the sliding direction of the operating member. It is possible to always have a lubricant on the contact surface between the member and the extrusion arm. As a result, it is possible to prevent seizure due to insufficient supply of the lubricant and stop the seedling planting operation, thereby improving the work efficiency.

  In addition to the effect of the invention of any one of claims 1 to 5, the seedling planting device according to claim 6 is configured to penetrate the extrusion arm to form a communicating portion, thereby forming a contact portion between the extrusion arm and the extruded body. Since the lubricant can be sufficiently supplied, it is possible to prevent seizure from occurring and stop the seedling planting operation and improve the work efficiency. Further, since the extrusion arm and the extruded body can be prevented from coming into contact with each other and worn out, durability can be improved.

  In addition to the effect of the invention according to any one of claims 1 to 6, the seedling planting device according to claim 7 includes a groove portion that communicates the positions of both sides of the bearing member in the operating direction of the extruded body with the extruded body. By forming the lubricant, the lubricant can move in the groove during the operation of the extrudate, so that the extrudate and the interior of the implant cage are prevented from being worn away by friction, improving durability and preventing seizure. It is possible to prevent the planting work from being stopped and to improve the work efficiency. Moreover, since the internal air can move through the groove when the extrudate moves, it is difficult for the internal pressure in the planting basket to change, and the lubricant leaks from the planting basket, It is possible to prevent the mud from being sucked into the planting pot. Thereby, contamination of a field and water can be prevented, and the fall of the durability of the component of a seedling planting device can be prevented.

  In addition to the effect of the invention of claim 7, the seedling planting device according to claim 8 makes the groove portion formed in the extruded body spiral, thereby making the strength of the extruded body uniform when the groove portion is formed. Therefore, durability can be improved.

  In addition to the effect of the invention of claim 3 or 4, the seedling planting device according to claim 9 operates the lock member by operating the lock member even when the contact portion of the push arm with the operation member is worn due to wear. The large-diameter portion of the actuating member can be brought into contact with the pushing arm by moving. Thereby, since the change of the extrusion timing by deterioration over time can be prevented, it is possible to plant seedlings as set over a long period of time.

FIG. 1 is a side view of a seedling transplanter including the seedling planting apparatus according to the first embodiment. FIG. 2 is a plan view of a seedling transplanter including the seedling planting apparatus according to the first embodiment. FIG. 3 is a detailed view of the seedling planting apparatus shown in FIG. FIG. 4 is an AA arrow view of FIG. 5 is a cross-sectional view taken along the line BB in FIG. FIG. 6 is a cross-sectional view of a main part of the implantation pad shown in FIG. FIG. 7 is a detailed view of the push cam shown in FIG. FIG. 8 is a perspective view of the push cam shown in FIG. FIG. 9 is a detailed view of part C in FIG. FIG. 10 is a detailed view of part D in FIG. 11 is a cross-sectional view taken along line EE in FIG. FIG. 12 is a side view of an extrusion cam included in the seedling planting apparatus according to the second embodiment. FIG. 13 is a perspective view of the push cam shown in FIG. FIG. 14 is a side view of an extrusion arm included in the seedling planting apparatus according to the third embodiment. 15 is a perspective view of the extrusion arm shown in FIG. FIG. 16 is a side view of an extrusion arm included in the seedling planting apparatus according to the fourth embodiment. FIG. 17 is a perspective view of the push-out arm shown in FIG. FIG. 18 is an explanatory diagram illustrating a modification of the seedling planting apparatus according to the first embodiment. FIG. 19 is an explanatory diagram illustrating a modification of the seedling planting apparatus according to the first embodiment. FIG. 20 is an explanatory diagram illustrating a modification of the seedling planting apparatus according to the first embodiment. FIG. 21 is an explanatory diagram illustrating a modification of the seedling planting apparatus according to the first embodiment. FIG. 22 is an explanatory diagram illustrating a modification of the seedling planting apparatus according to the first embodiment. FIG. 23 is an explanatory diagram illustrating a modification of the seedling planting apparatus according to the first embodiment. FIG. 24 is a flowchart showing an outline of a processing procedure when performing slip control of the seedling transplanter. FIG. 25 is a flowchart showing an outline of a processing procedure when slip control of the seedling transplanter is performed.

  Hereinafter, embodiments of a seedling planting apparatus according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

Embodiment 1
FIG. 1 is a side view of a seedling transplanter including the seedling planting apparatus according to the first embodiment. FIG. 2 is a plan view of a seedling transplanter including the seedling planting apparatus according to the first embodiment. In the following description, the front / rear / left / right direction reference defines the front / rear, left / right reference with respect to the traveling direction of the vehicle body as viewed from the cockpit. A traveling vehicle body 2 of the seedling transplanter 1 shown in the figure has a pair of left and right front wheels 4 and a pair of left and right rear wheels 5 as well, and is a four-wheel drive vehicle in which each wheel is driven during traveling. In addition, a seedling planting section 50 that can be moved up and down by a seedling planting section lifting mechanism 40 is provided at the rear of the traveling vehicle body 2.

  The traveling vehicle body 2 includes a main frame 7 disposed substantially at the center of the vehicle body, an engine 10 mounted on the main frame 7, and power for transmitting the power of the engine 10 to the drive wheels and the seedling planting unit 50. And a transmission device 15. That is, in this seedling transplanter 1 according to the first embodiment, the power of the engine 10 is used not only for moving the traveling vehicle body 2 forward and backward, but also for driving the seedling planting unit 50, A heat engine such as a diesel engine or a gasoline engine is used.

  Further, the engine 10 is arranged at a substantially center in the left-right direction of the traveling vehicle body 2 and in a state of protruding upward from a floor step 26 on which an operator puts his / her foot when getting on. Further, the floor step 26 is provided between the front part of the traveling vehicle body 2 and the rear part of the engine 10, and is mounted on the main frame 7, and a part of the floor step 26 becomes a lattice shape. The mud on the shoes can be dropped on the field. A rear step 27 that also serves as a fender for the rear wheel 5 is provided behind the floor step 26. The rear step 27 has an inclined surface that is inclined upward as it goes rearward, and is disposed on each of the left and right sides of the engine 10.

  The engine 10 protrudes upward from the floor step 26 and the rear step 27, and an engine cover 11 that covers the engine 10 is disposed in a portion protruding from these steps. That is, the engine cover 11 covers the engine 10 in a state of protruding upward from the floor step 26 and the rear step 27.

  Further, the traveling vehicle body 2 is provided with a cockpit 28 above the engine cover 11, and a steering unit 30 is disposed in front of the cockpit 28 and at the front center of the traveling vehicle body 2. Yes. The control unit 30 is arranged in a state of protruding upward from the floor surface of the floor step 26 and divides the front side of the floor step 26 into left and right.

  Various operating devices, a fuel tank for engine fuel, and the like are disposed inside the control unit 30, and a front cover 31 that can be opened and closed is provided at the front of the control unit 30. In addition, an operation lever and the like for operating the operation device, instruments, and a handle 32 are disposed on the upper portion of the control unit 30. The handle 32 is provided as a steering member that steers the traveling vehicle body 2 by an operator steering the front wheel 4, and can steer the front wheel 4 via an operation device or the like in the control unit 30. It has become. Further, as the lever, the operating state of the speed change lever 35 that is a traveling operation member for operating the traveling vehicle body 2 forward and backward and the traveling speed, and the seedling planting unit 50 are at least raised by the seedling planting unit lifting mechanism 40. A planting lifting / lowering lever 36 that is a planting operation member that can be switched by including is disposed. Specifically, the planting lifting / lowering lever 36 can switch the raising / lowering state of the seedling planting unit 50.

  In addition, on the portions of the floor step 26 that are located on the left and right sides of the control unit 30, a spare seedling stand 110 on which a replenishment seedling is placed is disposed. The preliminary seedling stage 110 is rotatably supported by a support shaft (vertical shaft) protruding from the floor surface of the floor step 26, and can be rotated by an operator's hand.

  The power transmission device 15 includes a hydraulic continuously variable transmission 16 as a main transmission, and a belt-type power transmission mechanism 17 that transmits power from the engine 10 to the hydraulic continuously variable transmission 16. Yes. Among these, the hydraulic continuously variable transmission 16 is configured as a hydrostatic continuously variable transmission called HST (Hydro Static Transmission). For this reason, the hydraulic continuously variable transmission 16 generates hydraulic pressure by a hydraulic pump that is driven by power from the engine 10, and converts this hydraulic pressure into mechanical force (rotational force) by a hydraulic motor and outputs it.

  The hydraulic continuously variable transmission 16 is disposed in front of the engine 10 and below the floor surface of the floor step 26. In the seedling transplanter 1 according to the first embodiment, the traveling body 2 is It is arranged in front of the engine 10 when viewed from above.

  The belt-type power transmission mechanism 17 includes a pulley attached to the output shaft of the engine 10, a pulley attached to the input shaft of the hydraulic continuously variable transmission 16, a belt wound around both pulleys, A tension pulley for adjusting the tension of the belt. As a result, the belt-type power transmission mechanism 17 can transmit the power generated by the engine 10 to the hydraulic continuously variable transmission 16 via the belt.

  Furthermore, the power transmission device 15 has a transmission case 18 in which the output from the engine 10 is transmitted via the belt-type power transmission mechanism 17 and the hydraulic continuously variable transmission 16. The mission case 18 is attached to the front portion of the main frame 7. The transmission case 18 shifts the output from the engine 10 transmitted via the belt-type power transmission mechanism 17 and the hydraulic continuously variable transmission 16 by the auxiliary transmission in the transmission case 18, and The power can be output separately for the driving power to the rear wheel 5 and the driving power to the seedling planting section 50.

  Among these, a part of the driving power can be transmitted to the front wheel 4 via the left and right front wheel final cases 21, and the rest can be transmitted to the rear wheel 5 via the left and right rear wheel gear cases 22. Yes. The left and right front wheel final cases 21 are disposed on the left and right sides of the mission case 18, respectively. The left and right front wheels 4 are connected to the left and right front wheel final cases 21 via axles. Further, the front wheel final case 21 is driven in accordance with the steering operation of the handle 32 and can steer the front wheel 4. Similarly, the rear wheels 5 are connected to the left and right rear wheel gear cases 22 via axles. On the other hand, the driving power is transmitted to a planting clutch (not shown) provided at the rear portion of the traveling vehicle body 2, and is transmitted to the seedling planting unit 50 by a planting transmission shaft (not shown) when the planting clutch is engaged. Is done.

  The seedling planting part lifting mechanism 40 for raising and lowering the seedling planting part 50 provided at the rear part of the traveling vehicle body 2 has a lifting link device 41, and the seedling planting unit 50 uses the lifting link device 41. It is attached to the traveling vehicle body 2 via. The lifting link device 41 includes a parallel link mechanism 42 that connects the rear portion of the traveling vehicle body 2 and the seedling planting portion 50. The parallel link mechanism 42 has an upper link and a lower link, and these links are rotatably connected to a rear-view portal-type link base frame 43 erected at the rear end of the main frame 7. The other end side of each link is rotatably connected to the seedling planting part 50, so that the seedling planting part 50 is connected to the traveling vehicle body 2 so as to be movable up and down.

  The seedling planting part lifting mechanism 40 has a hydraulic lifting cylinder 44 that expands and contracts by hydraulic pressure, and the seedling planting part 50 can be lifted and lowered by the expansion and contraction operation of the hydraulic lifting cylinder 44. The seedling planting part raising / lowering mechanism 40 can raise the seedling planting part 50 to the non-working position or lower it to the ground work position (ground planting position) by the raising / lowering operation.

  In addition, the seedling planting unit 50 can plant a range in which a seedling is planted in a plurality of sections or a plurality of rows. In the seedling transplanting machine 1 according to the first embodiment, the seedling is planted in four sections. It becomes the seedling planting part 50 of the strip planting. The seedling planting unit 50 includes a seedling planting device 60, a seedling placement table 51, and a float 47. Among these, the seedling placing table 51 has seedling placing surfaces 52 corresponding to the number of planting strips partitioned in the left-right direction of the traveling vehicle body 2, and a soiled mat-like seedling is placed on each seedling placing surface 52. It is possible to place. Thereby, it is not necessary to return the seedling prepared outside the field every time the seedling placed on the seedling placing stand 51 is planted, and continuous work can be performed, so that the work efficiency is improved.

  The seedling planting device 60 is a device for planting the seedlings placed on the seedling placing table 51 in the field. This seedling planting device 60 is disposed for every two strips, and a rotary case 63 that is rotatable is rotatably provided with two pots 61. Among these, the rotary case 63 is rotatably connected to a planting transmission case 64 that supplies driving force to the seedling planting device 60, and the planting transmission case 64 is connected to the seedling planting unit 50 from the engine 10. The power transmitted to is supplied to the seedling planting device 60.

  In addition, the float 47 slides on the farm scene along with the movement of the traveling vehicle body 2 to level the ground. The center float 48 located in the center of the seedling planting part 50 in the left-right direction of the traveling vehicle body 2 and the left-right direction Side floats 49 located on both sides of the seedling planting part 50 in FIG.

  Further, a leveling rotor 130 for leveling the agricultural field is provided on the front side of the lower position of the seedling planting unit 50. The leveling rotor 130 is configured to be rotatable by the output from the engine 10 transmitted through the rear wheel gear case 22.

  In addition, on both the left and right sides of the seedling planting unit 50, a drawing marker 135 that forms a line that is a guide in the traveling direction on the next planting line is provided. That is, the line drawing marker 135 draws a mark on the field when the seedling transplanter 1 moves straight forward in the field and then moves forward at the edge of the field. The drawing marker 135 is operated by a marker motor (not shown), and is configured so that the left and right drawing markers 135 can be switched each time the traveling vehicle body 2 turns. The left and right drawing markers 135 are replaced by a controller (not shown) to which a marker motor is connected. In other words, the controller is also provided as a marker switching device that alternately switches the left and right drawing markers 135 between the operating state and the non-operating state when the traveling vehicle body 2 turns.

  Further, a fertilizer application device 120 is mounted behind the cockpit seat 28 in the traveling vehicle body 2. The fertilizer application device 120 includes a fertilizer tank 121 that stores fertilizer, a fertilizer feeding unit 122 that feeds the fertilizer in the fertilizer tank 121 downward by a certain amount, and a fertilizer that has been fed to the seedling planting unit 50 side by a fertilizer hose 124. And a blower 123 to be transferred. Further, the fertilizer application device 120 is disposed below the seedling planting unit 50, and is provided with a fertilizer guide 125 to which fertilizer is transferred by the fertilizer hose 124 and a front side of the fertilizer guide 125, and is transferred by the fertilizer hose 124. And a grooving device 126 for dropping the fertilizer into a fertilizer groove formed in the vicinity of the side of the seedling planting strip.

  FIG. 3 is a detailed view of the seedling planting apparatus shown in FIG. FIG. 4 is an AA arrow view of FIG. 5 is a cross-sectional view taken along the line BB in FIG. The rotary case 63 of the seedling planting device 60 includes a non-constant speed transmission mechanism 70 including a plurality of planting gears 72 that are a plurality of rotating bodies. The driving force supplied from the attached transmission case 64 can be transmitted by the planting drive shaft 71.

  This inconstant speed transmission mechanism 70 is located in a portion opposite to each other in the direction perpendicular to the rotation axis of the sun gear 73 and the sun gear 73 that is the central rotating body in the inconstant speed transmission mechanism 70, together with the implantation rod 61. Two planetary gears 75 that rotate, and a counter gear 74 that is disposed between the two planetary gears 75 and the sun gear 73 and meshes with both the planetary gears 75 and the sun gear 73 are provided. Of these, the planting drive shaft 71 is connected to the sun gear 73, and the driving force supplied from the planting transmission case 64 is transmitted to the sun gear 73 to be input to the inconstant speed transmission mechanism 70. The attachment gear 72 is rotatable.

  The implantation cage 61 is connected to an implantation cage rotation shaft 65 that is a rotation shaft of the planetary gear 75, and can rotate as the implantation cage rotation shaft 65 rotates together with the planetary gear 75. It is possible. That is, the driving force supplied from the planting transmission case 64 to the inconstant speed transmission mechanism 70 by the planting drive shaft 71 is output from the inconstant speed transmission mechanism 70 by the planting rod rotation shaft 65, and the planting rod 61 is Rotation is performed by the driving force output from the inconstant speed transmission mechanism 70.

  Further, the sun gear 73, the counter gear 74, and the planetary gear 75 of the inconstant speed transmission mechanism 70 are eccentric with respect to the pitch circle of each planting gear 72. In this way, the planting gear 72 that is eccentric with respect to the pitch circle is the portion of the two planting gears 72 that are meshed with each other with the shortest distance from the rotation center to the tooth tip in one planting gear 72. The other planting gear 72 is disposed so as to mesh with a portion having the longest distance from the rotation center to the tooth tip.

  As a result, the plurality of planting gears 72 are eccentric, and the rotation transmitted from the planting drive shaft 71 to the sun gear 73 is transmitted via the counter gear 74 without changing the distance between the shafts. It is possible to transmit up to 75. Further, the inconstant speed transmission mechanism 70 transmits the rotation from the sun gear 73 to the planetary gear 75 by using the plurality of planting gears 72 eccentric in this way, so that the planetary gear 75 has a rotational speed corresponding to the rotational speed of the sun gear 73. The rotation speed can be made unequal. That is, the rotational speed of the implantation basket 61 can be made unequal.

  FIG. 6 is a cross-sectional view of a main part of the implantation pad shown in FIG. An extruding mechanism 90 is provided with an extruding mechanism 90 that has a seedling collecting finger 81 that is a seedling removing member for scraping a seedling from the seedling mounting table 51 attached to the outside, and that extrudes the seedling held by the seedling collecting finger 81 and moves it to the field. Decorated. Further, the implantation rod 61 is provided with an extrusion cam 82 that is rotatably provided and is an operation member that pushes the extrusion mechanism 90.

  In detail, the seedling-capturing finger 81 is attached to the outside of the planting basket case 80 that the planting basket 61 has and a space is formed inside. This seedling finger 81 has a bar shape with one end formed in a bifurcated shape, and an end portion side opposite to the bifurcated end portion side is attached to the transplanted cocoon case 80. Yes. The seedling collecting finger 81 is arranged at the lower part of the seedling placing table 51 and can take out the seedling from a front plate 53 (see FIG. 3) that receives the seedlings at the lower part of the seedling placing table 51. Further, the push cam 82 is connected to the implantation rod rotating shaft 65 and can be rotated along with the rotation of the implantation rod rotating shaft 65.

  Further, the pushing mechanism 90 is provided in the planting pod case 80, and pushes out the seedling taken by the pushing arm 91 and the seedling collecting finger 81 installed in the planting basket 61 so as to be freely rotatable. And an extrusion fork 95 which is an extruded body to be moved. Among these, the pushing arm 91 has one end side located near the pushing fork 95, the other end side located near the pushing cam 82, and the implantation rod case 80 in such a direction that the axis is parallel to the rotation axis of the pushing cam 82. It is installed in a freely rotatable manner.

  Further, the end of the push arm 91 in the vicinity of the push cam 82 contacts the push cam 82 within a predetermined range of the rotating push cam 82, and the push cam 82 in another predetermined range of the push push cam 82. It is arrange | positioned so that it may space apart from. The rotatable pushing arm 91 is provided so as to turn in accordance with the contact state with the pushing cam 82. That is, the push arm 91 has a contact surface 92 that contacts the push cam 82 while sliding on the push cam 82 at the end of the push arm 91 on the push cam 82 side. Accordingly, the push arm 91 is provided so as to rotate.

  The extrusion fork 95 is provided in a direction parallel to the seedling-capturing finger 81 and extends between the inside and the outside of the planting case 80. Specifically, the extrusion fork 95 extends from the inside of the planting cocoon case 80 toward the outside from the side where the tip of the bifurcated seedling collecting finger 81 is located in the planting cocoon case 80. ing. Further, the extrusion fork 95 is provided so as to be movable in the direction in which the extrusion fork 95 extends. In other words, the extrusion fork 95 is disposed so as to be extendable and retractable from the planting basket case 80 along the seedling-collecting finger 81. Has been.

  An extrusion spring 96 that applies a biasing force to the extrusion fork 95 is provided in the implantation rod case 80. The push spring 96 is formed by a compression spring, and is arranged so that an urging force in a direction in which the push fork 95 protrudes from the implantation rod case 80 can be applied to the push fork 95.

  On the other hand, in the state where the contact surface 92 is in contact with the extrusion cam 82, the push arm 91 has an end on the push fork 95 side that exerts a force in a direction to reduce the protruding amount of the push fork 95 from the implantation rod case 80. It is provided so as to be applied to the extrusion fork 95. That is, the pushing arm 91 has a pushing portion 93 for operating the pushing fork 95 at the end of the pushing arm 91 on the pushing fork 95 side, and the rotating state when the contact surface 92 contacts the pushing cam 82. Then, the force in the direction opposite to the urging force from the push spring 96 is provided from the push portion 93 to the push fork 95.

  The extruded portion 93 has a projecting portion that is divided into two branches and projects in the same direction. In other words, the extruded portion 93 has two projecting portions that project in the same direction. The pushing portion 93 can apply a force in the direction opposite to the urging force from the pushing spring 96 to the pushing fork 95 with the pushing fork 95 held between the two protruding portions. It has become.

  As described above, the push cam 82 that rotates the push arm 91 by changing the contact state of the push arm 91 with the contact surface 92 has a slanted shape when viewed in the direction along the rotation axis of the push cam 82. Is formed. The contact surface 92 of the push-out arm 91 is slidably disposed on the outer peripheral surface of the slant-shaped push-out cam 82, so that the contact state changes.

  Specifically, the push cam 82 is in contact with the outer peripheral surface while sliding on the push arm 91, and the push arm 91 is rotated by applying an actuating force to the push arm 91, and the push arm. A non-actuating surface 84 that does not contact 91 and does not apply an actuating force to the push-out arm 91.

  Among these, the operating surface 83 is a surface of the outer peripheral surface of the extrusion cam 82 formed in the shape of a slug and has a relatively large radius around the implantation rod rotation shaft 65, and the non-operating surface 84. Is a surface of the outer peripheral surface of the extrusion cam 82 formed in the shape of a slanting ball that has a radius smaller than the operating surface 83 with respect to the implantation rod rotating shaft 65 as a center. That is, the outer peripheral surface of the push cam 82 is such that the portion of the non-working surface 84 is in the direction of the implantation rod rotating shaft 65 or the direction of the shaft center when the push cam 82 is rotated. The actuating surface 83 is in close proximity to the inner surface of the implantation rod case 80.

  In addition, as described above, in the implantation cage case 80 in which a plurality of operation members such as the extrusion cam 82 and the extrusion fork 95 are provided, lubricating oil as a lubricant is injected therein.

  FIG. 7 is a detailed view of the push cam shown in FIG. FIG. 8 is a perspective view of the push cam shown in FIG. As for the outer peripheral surface of the push cam 82, the operating surface 83 has a larger range in the circumferential direction of the outer peripheral surface than the non-operating surface 84. A lubricating groove 85 is formed. The lubrication groove 85 is formed in the vicinity of the center of the operation surface 83 in the width direction of the push cam 82 as a groove recessed from the work surface 83 along the circumferential direction of the push cam 82. In other words, the lubricating groove 85 is formed in the sliding direction when the contact surface 92 of the pushing arm 91 slides on the operating surface 83 of the pushing cam 82. That is, the lubrication groove 85 is formed at a portion of the outer peripheral surface of the push cam 82 where the contact surface 92 of the push arm 91 contacts.

  FIG. 9 is a detailed view of part C in FIG. In the extrusion fork 95, a push rod 97 that is a shaft portion of the extrusion fork 95 is supported by a bush 100 that is a bearing member provided in the implantation rod 61. The bush 100 is formed in a substantially cylindrical shape having an inner diameter that is approximately the same as the outer diameter of the push rod 97 and slightly larger than the outer diameter of the push rod 97. The bush 100 is held inside the implanted rod case 80, and the push rod 97 is supported by the bush 100 by passing through the inside of the bush 100.

  In addition, a seal member 105 is disposed on the implanted rod case 80 at a portion where the push rod 97 protrudes from the inside of the implanted rod case 80 to the outside. The seal member 105 is pushed with the implanted rod case 80. It is located between the rod 97 and is in contact with the push rod 97. In other words, the portion of the implant rod case 80 from which the push rod 97 protrudes is sealed by the seal member 105.

  FIG. 10 is a detailed view of part D in FIG. 11 is a cross-sectional view taken along line EE in FIG. The push rod 97 of the extrusion fork 95 is formed with a groove portion 101 that communicates positions on both sides of the bush 100 in the operation direction of the extrusion fork 95. The groove portion 101 is formed as a groove provided on the surface of the push rod 97 along the extending direction of the push rod 97, and is formed toward both ends of the bush 100 in the direction in which the push rod 97 and the bush 100 extend. Has been. Thereby, the groove part 101 is connecting the space located in the both sides of the extending direction of the bush 100 in the implantation pot case 80. As shown in FIG.

  The seedling planting device 60 according to the first embodiment is configured as described above, and the operation thereof will be described below. During operation of the seedling transplanter 1 including the seedling planting device 60, the traveling vehicle 2 travels and the seedlings placed on the seedling placement table 51 are planted by the power generated by the engine 10. Among these, the planting operation is performed by gradually rotating the seedling placement device 51 by rotating the planting basket 61 while the entire seedling planting device 60 rotates with the rotation axis in the horizontal direction. To plant. At the time of planting work, the seedlings are planted in a plurality of rows by traveling with the traveling vehicle body 2 in the field while operating the seedling planting device 60 in this way.

  Thus, since the seedling planting apparatus 60 that performs seedling planting work includes the inconstant speed transmission mechanism 70, the rotational speed of the planting basket 61 with respect to the rotary case 63 is the speed of the planting basket 61 with respect to the rotary case 63. And the rotation angle of the rotary case 63 with respect to the planting transmission case 64.

  Specifically, the planting rod 61 has a rotation angle of the planting cage 61 with respect to the rotary case 63 and a rotation angle of the rotary case 63 with respect to the planting transmission case 64. In a state where the tip of the seedling finger 81 is located in the vicinity of the upper part of the planting locus T (see FIG. 3), which is the rotation locus, the rotation of the planting basket 61 is relatively slow. The front plate 53 located at the lower part of the seedling placing table 51 is located near the upper end of the planting locus T on the side where the tip of the seedling collecting finger 81 faces downward from above in the planting locus T. The seedling is taken out from the front plate 53 when the tip of the seedling collecting finger 81 of the rotating planting basket 61 is directed downward from above.

  The planting basket 61 rotates faster on the lower end side in the planting locus T when the tip of the seedling-taking finger 81 is directed downward from above than when the tip of the seedling-taking finger 81 is located closer to the upper end. Become. For this reason, at the position near the lower end of the planting locus T, the planting basket 61 is less moved in the horizontal direction when the tip of the seedling collecting finger 81 is lowered. Thereby, the seedling planting device 60 can plant seedlings at an angle close to perpendicular to the field.

  The operation of the planting basket 61 when planting seedlings in this way will be described. At the time of planting seedlings, the planting basket 61 rotates with respect to the rotary case 63 while the rotary case 63 rotates. The planting basket 61 scrapes off the seedling from the front plate 53 of the seedling placing table 51 by the seedling collecting finger 81.

  On the other hand, in the planting basket 61, as the planting basket 61 rotates, the push cam 82 connected to the planting basket rotating shaft 65 rotates in the planting basket case 80. As a result, the surface of the push cam 82 on the contact surface 92 side of the push arm 91 is switched between the working surface 83 and the non-working surface 84.

  In the push-out arm 91, when the push-out portion 93 located at the other end of the contact surface 92 is in contact with the push-out fork 95, and the contact surface 92 of the push-out arm 91 is in contact with the operation surface 83 of the push-out cam 82, A force in the direction opposite to the urging force from the push spring 96 is applied to the push fork 95. That is, when the contact surface 92 is in contact with the operating surface 83 of the push cam 82, the push arm 91 applies a force in the direction in which the push fork 95 is retracted from the implantation rod case 80 to the push fork 95. As a result, the fork 95 is in a state in which the tip of the portion that is outside the planting fold case 80 is away from the tip of the seedling collecting finger 81.

  The pushing cam 82 is in a state in which the seedling removing finger 81 scrapes the seedling from the seedling placing stand 51 to plant the seedling from the state in which the seedling has been planted in the planting locus T at the tip of the seedling collecting finger 81. In the meantime, the operating surface 83 contacts the contact surface 92 of the pushing arm 91 while rotating. For this reason, during this time, the pushing arm 91 continues to apply a force in the direction of shrinking from the implantation rod case 80 to the pushing fork 95, and the pushing fork 95 is maintained in a compressed state.

  On the other hand, when the contact surface 92 of the push-out arm 91 is opposed to the non-operation surface 84 of the push-out cam 82, the push-out arm 91 is no longer the push-out cam 82. The force applied to the extrusion fork 95 from the extrusion arm 91 is lost. Accordingly, the pushing fork 95 moves in a direction in which the protruding amount from the implantation rod case 80 increases due to the urging force from the pushing spring 96, and the pushing arm 91 is also pushed by the pushing force from the pushing spring 96. Rotate according to the movement of 95. The pushing fork 95 moves in the direction in which the amount of protrusion from the planting cocoon case 80 increases in this way, so that the tip of the portion that is outside the planting cocoon case 80 is the tip of the seedling collecting finger 81. It becomes a state located in the vicinity.

  The push-out cam 82 rotates in the planting locus T at the tip of the seedling collection finger 81 when the seedling collection finger 81 scrapes the seedling from the seedling placing table 51 and then enters a state of planting the seedling. However, the non-operating surface 84 is in a state of facing the contact surface 92 of the pushing arm 91. For this reason, the pushing arm 91 loses the force to be applied to the pushing fork 95 when the tip of the seedling collecting finger 81 is positioned below the planting locus T and the seedling is planted. , Projecting from the seedling finger 81 in the direction of the tip and extending from the planting cocoon case 80.

  As a result, the push-out fork 95 scrapes off the seedling placement table 51 with the seedling removal finger 81 and pushes out the seedling held by the seedling removal finger 81 and moves it to the field. The planting basket 61 is planted by moving the seedling to the field by pushing out the seedling taken with the seedling-picking finger 81 from the seedling placement table 51 by the extrusion fork 95 as the planting basket 61 rotates in this manner.

  When the tip of the seedling collecting finger 81 has passed the state of planting the seedling in the planting locus T, the rotating push cam 82 has its operating surface 83 again in contact with the contact surface 92 of the push arm 91. Thereby, the pushing arm 91 gives again the force of the direction which shrinks from the implantation cage case 80 with respect to the pushing fork 95, and the pushing fork 95 will be in the state shrunk by this force. When seedlings are planted by the seedling planting device 60, the extrusion cam 82 rotates in the planting cage case 80, and the extrusion arm 91 repeats the rotation, whereby the extrusion fork 95 that pushes out the seedling expands and contracts. repeat.

  In the implanting cocoon case 80, the pushing cam 82 rotates as described above, whereby the outer peripheral surface of the pushing cam 82 and the contact surface 92 of the pushing arm 91 slide or the pushing arm 91 rotates. Although the contact state of the extrusion part 93 and the extrusion fork 95 changes, these parts operate | move, being lubricated with lubricating oil. That is, each operation part in the planting pot case 80 operates while being lubricated by the lubricating oil injected into the planting pot case 80.

  At this time, since the lubrication groove 85 is formed on the operation surface 83 of the push cam 82, when the operation surface 83 and the contact surface 92 of the push arm 91 slide, the lubricating oil passes through the lubrication groove 85. It is easy to get in between. For this reason, the operation surface 83 of the extrusion cam 82 and the contact surface 92 of the extrusion arm 91 that slide during seedling planting work in the seedling planting device 60 are appropriately adjusted by the lubricating oil supplied through the lubricating groove 85. Lubricated.

  Further, when the extrusion fork 95 repeatedly expands and contracts, the internal pressure in the space on both sides in the extending direction of the bush 100 changes in accordance with the operation of the extrusion fork 95, and this internal pressure is the push rod 97 of the extrusion fork 95. It is made uniform by the groove part 101 formed in. That is, when the extrusion fork 95 is operated, air and lubricating oil located in the spaces on both sides of the bush 100 move between the spaces through the groove portion 101, so that the internal pressure is made uniform by this movement.

  The seedling planting apparatus 60 according to the first embodiment rotates when the seedling is planted in the planting basket 61, and is an extrusion cam that contacts the extrusion arm 91 that pushes the seedling taken by the seedling collection finger 81 onto the extrusion fork 95. Since the lubricating groove 85 through which the lubricating oil can move is formed in 82, the contact portion between the extrusion arm 91 and the extrusion cam 82 can be more reliably lubricated. As a result, seizure due to insufficient supply of lubricating oil can be prevented, and wear of the member can be suppressed. Moreover, durability can be improved by making it difficult for the member to be worn.

  Further, since the lubrication groove 85 is formed in the operating surface 83 of the push cam 82, the lubricating oil is supplied to the periphery of the push cam 82 inside the implantation rod 61 as the push cam 82 rotates, so the push cam It is possible to suppress wear and seizure between 82 and the inside of the implantation basket 61. As a result, durability can be improved more reliably.

  Further, by forming the lubricating groove 85 on the working surface 83 of the push cam 82, when supplying the lubricating oil, the implantation rod 61 is opened, the push cam 82 and the push mechanism 90 are removed, and the lubricating oil is supplied. Work becomes unnecessary. As a result, maintainability can be improved.

  Further, since the lubrication groove 85 is not formed on the non-operating surface 84 of the push cam 82, when the push cam 82 contacts the push arm 91, the strength of a portion where a strong force is applied to the push cam 82 can be maintained. it can. As a result, breakage of the extrusion cam 82 can be prevented.

  In addition, since the groove 101 that communicates the positions on both sides in the operation direction of the extrusion fork 95 is formed in the push rod 97 of the extrusion fork 95, the lubricating oil moves through the groove 101 when the extrusion fork 95 operates. As a result, it is possible to prevent the extrusion fork 95 and the inside of the planted cocoon case 80 from being worn away by friction. As a result, durability can be improved, and seizure can be prevented and planting work can be prevented from being stopped, and work efficiency can be improved.

  Further, since the air in the space on both ends of the bush 100 can move through the groove portion 101 when the extrusion fork 95 is operated, it is difficult for the internal pressure of the implantation rod 61 to change when the extrusion fork 95 is operated. Can be made. As a result, it is possible to prevent the lubricating oil from leaking out of the planting basket 61 and contaminating the field and water due to the pressure change in the planting basket 61.

  In addition, by making it difficult for the internal pressure of the planting basket 61 to change, it is possible to prevent water and mud in the field from being sucked into the planting basket 61 due to a large change in the internal pressure of the planting basket 61. can do. As a result, it is possible to prevent the durability of the components of the seedling planting device 60 from being deteriorated, and it is not necessary to open the planting basket 61 to remove water and mud inside. Can be improved.

[Embodiment 2]
The seedling planting device 60 according to the second embodiment has substantially the same configuration as the seedling planting device 60 according to the first embodiment, but the communication portion through which the lubricant passes is provided as a hole that penetrates the extrusion cam 82. There is a feature in that. Since other configurations are the same as those of the first embodiment, the description thereof is omitted and the same reference numerals are given.

  The seedling planting device 60 according to the second embodiment is similar to the seedling planting device 60 according to the first embodiment, in which the planting basket 61 includes a seedling removing finger 81 that scrapes seedlings from the seedling placement table 51, and an extrusion arm. An extrusion mechanism 90 having 91 and an extrusion fork 95 and an extrusion cam 82 for operating the extrusion mechanism 90 are provided.

  FIG. 12 is a side view of an extrusion cam included in the seedling planting apparatus according to the second embodiment. FIG. 13 is a perspective view of the push cam shown in FIG. The push-out cam 82 is formed in a slanting ball shape, and has an operation surface 83 and a non-operation surface 84 on the outer peripheral surface. In the seedling planting apparatus 60 according to the second embodiment, the communicating part to which the lubricating oil injected into the planting basket 61 can move is a hole that penetrates the push cam 82 and has both ends opened to the working surface 83. A lubrication hole 140 is formed in the extrusion cam 82.

  Specifically, the lubrication hole 140 penetrates through a portion where the point symmetry of the operation surface 83 formed in a large range in the circumferential direction on the outer peripheral surface of the push cam 82 also becomes the operation surface 83. Is formed by. That is, the lubrication hole 140 is formed as a hole penetrating the extrusion cam 82 at an angle at which both ends open to the operation surface 83 when penetrating in the radial direction of the extrusion cam 82. In other words, the lubrication hole 140 is The pusher cam 82 passes through the non-actuating surface 84.

  The seedling planting device 60 according to the second embodiment is configured as described above, and the operation thereof will be described below. When seedlings are planted by the seedling planting device 60, the planting basket 61 rotates relative to the rotating rotary case 63, so that the planting basket 61 moves the seedlings on the seedling placement table 51 to the field and plants them. .

  In this case, the push cam 82 rotates in the implantation pot 61, and the surface located on the contact surface 92 side of the push arm 91 is switched between the working surface 83 and the non-working surface 84. As a result, the push-out arm 91 rotates and the push-out fork 95 expands and contracts by switching whether or not to apply a force in a direction opposite to the force urged by the push-out spring 96 to the push-out fork 95.

  At this time, the push cam 82 rotates while the operating surface 83 slides on the contact surface 92 of the push arm 91. Since the push cam 82 has the lubrication hole 140, both sides of the push cam 82 slide. In between, the lubricating oil easily enters through the lubricating holes 140. In particular, since the extrusion cam 82 rotates, when the lubricating oil enters the lubricating hole 140, the lubricating oil in the lubricating hole 140 is centrifugally applied to the lubricating oil in the lubricating hole 140 at both ends of the lubricating hole 140. Flows out of the opening.

  As a result, the lubricating oil easily enters between the operating surface 83 of the push cam 82 and the contact surface 92 of the push arm 91, and both sliding surfaces are lubricated by the lubricating oil flowing out from the lubricating hole 140. The For this reason, the operation surface 83 of the extrusion cam 82 and the contact surface 92 of the extrusion arm 91 that slide at the time of seedling planting work in the seedling planting device 60 are appropriately adjusted by the lubricating oil supplied through the lubrication hole 140. Lubricated.

  In the seedling planting device 60 according to the second embodiment described above, the lubrication hole 140 into which the lubricating oil enters is formed in the extrusion cam 82 by penetrating the extrusion cam 82 and having both ends open to the operation surface 83. The contact portion between the arm 91 and the push cam 82 can be more reliably lubricated. As a result, seizure due to insufficient supply of lubricating oil can be prevented, and wear of the member can be suppressed.

  Further, the lubrication hole 140 is formed in the extrusion cam 82 so as to pass through the extrusion cam 82 while avoiding the non-operation surface 84, so that the lubricating oil that has entered the lubrication hole 140 along with the rotation of the extrusion cam 82 is removed. 82 can be supplied to the inside of the implantation pot 61 around 82. As a result, it is possible to suppress wear and seizure between the extrusion cam 82 and the inside of the implantation basket 61, and it is possible to improve durability.

[Embodiment 3]
The seedling planting device 60 according to the third embodiment has substantially the same configuration as the seedling planting device 60 according to the first embodiment, but is characterized in that the communicating portion through which the lubricant passes is formed in the extrusion arm 91. There is. Since other configurations are the same as those of the first embodiment, the description thereof is omitted and the same reference numerals are given.

  FIG. 14 is a side view of an extrusion arm included in the seedling planting apparatus according to the third embodiment. 15 is a perspective view of the extrusion arm shown in FIG. In the seedling planting apparatus 60 according to the third embodiment, the communication part to which the lubricating oil injected into the planting basket 61 can move is a lubricating groove 145 that is a groove formed on the contact surface 92 of the pushing arm 91. The extrusion arm 91 is formed.

  Specifically, the contact surface 92 is formed in the push arm 91 as a surface that contacts the push cam 82 while sliding, and an operating force is applied from the push cam 82, and the lubricating groove 145 is formed on the contact surface 92. , And is formed along a sliding direction relative to the extrusion cam 82. That is, the contact surface 92 faces the push cam 82 and slides with respect to the operation surface 83 of the push cam 82 by the rotation of the push cam 82. However, the lubrication groove 145 extends along this sliding direction. The contact surface 92 is formed as a groove extending in the sliding direction.

  The seedling planting device 60 according to the third embodiment is configured as described above, and the operation thereof will be described below. When seedlings are planted by the seedling planting device 60, the pushing cam 82 having the working surface 83 and the non-working surface 84 rotates in the planting basket 61, so that the pushing cam 82 contacts the pushing arm 91. The state changes and the push arm 91 rotates. As a result, the state of the force applied to the extrusion fork 95 from the extrusion portion 93 of the extrusion arm 91 changes, and the extrusion fork 95 expands and contracts.

  At this time, the push arm 91 slides on the operating surface 83 of the push cam 82 on which the contact surface 92 rotates. Since the contact surface 92 has a lubrication groove 145, the push surface 91 and the push cam. When sliding with the operation surface 83 of 82, the lubricating oil easily enters between both through the lubricating groove 145. For this reason, the contact surface 92 of the extrusion arm 91 and the operation surface 83 of the extrusion cam 82 that slide at the time of seedling planting work in the seedling planting device 60 are appropriately adjusted by the lubricating oil supplied through the lubricating groove 145. Lubricated.

  The seedling planting device 60 according to the third embodiment described above forms a lubricating groove 145 in which lubricating oil can move on the contact surface 92 of the pushing arm 91 that slides against the working surface 83 of the rotating pushing cam 82. Therefore, the contact portion between the extrusion arm 91 and the extrusion cam 82 can be more reliably lubricated during the seedling planting operation. As a result, seizure due to insufficient supply of lubricating oil can be prevented, and wear of the member can be suppressed. Moreover, since the extrusion arm 91 and the extrusion cam 82 can be prevented from coming into contact with each other and being worn away, durability can be improved.

  Further, since the lubrication groove 145 is formed on the contact surface 92 of the extrusion arm 91 along the sliding direction of the extrusion cam 82, the lubricating oil is always present on the contact surface 92 of the extrusion cam 82 and the extrusion arm 91. Can do. As a result, it is possible to prevent the seedling planting operation from being stopped due to seizure, and to improve the work efficiency.

[Embodiment 4]
The seedling planting device 60 according to the fourth embodiment has substantially the same configuration as the seedling planting device 60 according to the third embodiment, but the communication part through which the lubricant passes is provided as a hole that penetrates the push arm 91. There is a feature in that. Since other configurations are the same as those of the third embodiment, the description thereof is omitted and the same reference numerals are given.

  FIG. 16 is a side view of an extrusion arm included in the seedling planting apparatus according to the fourth embodiment. FIG. 17 is a perspective view of the push-out arm shown in FIG. In the seedling planting device 60 according to the fourth embodiment, the communicating portion to which the lubricating oil injected into the planting basket 61 can move is a contact surface that is an end portion of the push arm 91 that contacts the push cam 82. 92 and the push-out portion 93 of the push-out arm 91 are formed in the push-out arm 91 as lubrication holes 150 which are holes opened to the push-out arm 91. That is, the lubrication hole 150 passes through the extrusion arm 91 from the extrusion portion 93 to the contact surface 92, and both ends open to the extrusion portion 93 and the contact surface 92.

  Among these, the opening part by the side of the extrusion part 93 is opening to the base 152 which is a part between the two protrusion parts 151 which the extrusion part 93 has. That is, the two protrusions 151 included in the push-out portion 93 protrude from the base portion 152 located on the main body side of the push-out arm 91 from the base portion 152 to the opposite direction side to the side where the contact surface 92 is located. The opening portion on the pushing portion 93 side in the is open to the base portion 152.

  The seedling planting device 60 according to the fourth embodiment is configured as described above, and the operation thereof will be described below. When seedlings are planted by the seedling planting device 60, the push-out arm 91 rotates with the rotation of the push-out cam 82, and the push-out arm 91 turns, whereby the push-out fork 95 expands and contracts. At this time, the pushing arm 91 has a contact surface 92 that slides on the working surface 83 of the pushing cam 82, and the pushing portion 93 has a magnitude of force applied to the pushing fork 95 and a relative contact angle with the pushing fork 95. However, since the lubrication hole 150 is formed in the pushing arm 91, the lubricating oil is easily supplied to both the contact surface 92 side and the pushing portion 93 side.

  That is, between the contact surface 92 of the extrusion arm 91 and the operation surface 83 of the extrusion cam 82, lubricating oil is supplied through the lubrication hole 150, and the contact portion between the extrusion portion 93 of the extrusion arm 91 and the extrusion fork 95. In the meantime, the lubricating oil is supplied through the lubricating holes 150. For this reason, during the seedling planting operation in the seedling planting device 60, between the pusher arm 91, the pusher cam 82, and the pusher fork 95, the contact state and the magnitude of the applied force change as the pusher arm 91 rotates. These portions are appropriately lubricated by the lubricating oil supplied through the lubricating holes 150.

  Since the seedling planting apparatus 60 according to the fourth embodiment has the lubrication hole 150 penetrating from the pushing portion 93 to the contact surface 92 formed in the pushing arm 91, the pushing arm 91 and the pushing fork at the time of seedling planting work. The lubricating oil can be sufficiently supplied to the contact portion with 95. As a result, it is possible to prevent the seedling planting operation from being stopped due to seizure due to insufficient supply of lubricating oil, and the work efficiency can be improved. Moreover, since the extrusion arm 91 and the extrusion fork 95 can be prevented from coming into contact with each other and being worn away, durability can be improved.

  Further, since the opening on the side of the extrusion portion 93 in the lubrication hole 150 is open to the base portion 152 of the extrusion portion 93, the extrusion portion 93 when the lubrication hole 150 is opened in the extrusion portion 93 that contacts the extrusion fork 95. Strength can be maintained. As a result, durability can be improved.

[Modification]
FIG. 18 is an explanatory diagram illustrating a modification of the seedling planting apparatus according to the first embodiment. In the seedling planting device 60 described above, the groove portion 101 is formed along the direction in which the push rod 97 of the extrusion fork 95 extends, but the groove portion 101 may be formed in a shape other than this. Good. For example, as shown in FIG. 18, the groove 101 may be formed in the push rod 97 of the extrusion fork 95 in a spiral shape with the operation direction of the extrusion fork 95 as an axis.

  By making the groove portion 101 into a spiral shape, it is possible to keep the lubricating oil in the groove portion 101, so that the lubricating oil can be supplied to the inside of the implantation rod 61 when the extrusion fork 95 is operated, It is possible to reliably suppress a decrease in durability due to friction and seizure. In addition, by making the groove portion 101 spiral, a change in strength caused by forming the groove portion 101 in the push rod 97 can be dispersed in the circumferential direction of the push rod 97. Thereby, durability can be improved, making the change of the intensity | strength by forming the groove part 101 uniform.

  FIG. 19 is an explanatory diagram illustrating a modification of the seedling planting apparatus according to the first embodiment. Further, in the seedling planting device 60 described above, the push cam 82 is provided so that an operating force can be applied to the push arm 91 by sliding on the contact surface 92 of the push arm 91 while rotating. However, the push cam 82 may be configured in consideration of wear due to sliding. In configuring the push cam 82 in consideration of wear, for example, the push cam 82 has a distance from the rotation axis CL of the push cam 82 to the operation surface 83 other than one end side in the axial direction of the rotation shaft CL. It is formed so that the end side is larger. That is, the push cam 82 is formed in a substantially tapered shape, and in a cross-sectional view when the push cam 82 is viewed in the direction of the rotation axis CL, the diameter of the working surface 83 increases from one end side to the other end side of the rotation shaft CL. Is formed to be large. Furthermore, the contact position of the operating surface 83 with respect to the pushing arm 91 and the spring 160 that is a biasing member that applies a biasing force in the direction along the rotation axis CL to the pushing cam 82 is rotated. And a lock member 161 that is fixed at a predetermined position in the axis CL direction.

  Specifically, the spring 160 has an urging force in the direction along the rotation axis CL with respect to the push cam 82, and the end portion side of the operation surface 83 on the side where the distance from the rotation axis CL is small is the push arm 91. A biasing force in the direction of contact is applied. For example, the spring 160 is formed by a compression spring, and is disposed between an end portion of the push cam 82 having a smaller diameter of the operation surface 83 and the inner surface of the implantation rod case 80, and the push cam is extended from the inner surface. An urging force in a direction away from 82 is applied to the push cam 82. Further, by disposing the push arm 91 in contact with the push cam 82 in the vicinity of the spring 160, the end of the spring 160 on the side where the distance from the rotation axis CL is small is the push arm. An urging force in a direction in contact with 91 is applied to the push cam 82.

  The push cam 82 is disposed so as to be movable in the direction of the rotation axis CL, and the lock member 161 is a bolt, a lock nut, or the like that can fix the movement of the push cam 82 in the direction of the rotation axis CL at a predetermined position. Configure. Since the push arm 91 does not move in the direction of the rotation axis CL, the lock member 161 causes the push cam 82 movable in the direction of the rotation axis CL to move the contact position of the operation surface 83 with respect to the push arm 91 to the rotation axis. It can be fixed at a predetermined position in the CL direction.

  By configuring the implant cage 61 as described above, when the operating surface 83 of the push cam 82 and the contact surface 92 of the push arm 91 slide and these portions are worn, the lock member 161 is operated. By doing so, the timing of rotation of the push-out arm 91 can be maintained. In other words, when the working surface 83 or the contact surface 92 is worn, the portion of the working surface 83 having a large diameter is moved by moving the push cam 82 in the direction in which the end portion having the larger diameter of the working surface 83 approaches the push arm 91. Can be brought into contact with the contact surface 92 of the extrusion arm 91. As a result, it is possible to prevent changes in the extrusion timing due to aging deterioration, and it becomes possible to plant seedlings as set for a long period of time. Moreover, the replacement interval of the extrusion arm 91 and the extrusion cam 82 can be increased, and the durability of the parts can be improved.

  Moreover, you may comprise the inconstant speed transmission mechanism 70 so that the play of the planting gear 72 may not generate | occur | produce. In other words, the implantation rod 61 eccentrically sets the planting gears 72 to make the planetary gear 75 unequal, so that the rotation is accelerated only at the time of implantation. No. 75 is a force that tries to make an equal circle from an ellipse by centrifugal force, and tries to become constant speed. For this reason, an unreasonable force is applied between the eccentric planting gears 72, and a force such as self-locking or play occurs, but the inconstant speed transmission mechanism 70 generates such play. You may comprise so that it may not.

  FIG. 20 is an explanatory diagram illustrating a modification of the seedling planting apparatus according to the first embodiment. For example, as shown in FIG. 20, a spring 170 is hooked on a counter gear shaft 175, which is a rotation shaft of the counter gear 74, and an urging force is applied to the counter gear 74, as shown in FIG. 20. Thus, the play of the planting gear 72 may be suppressed. That is, the counter gear 74 is provided with the counter gear shaft 175 disposed at a position deviated from the straight line connecting the centers of the sun gear 73 and the planetary gear 75, but the counter gear shaft 175 is connected to the sun gear 73. A spring 170 is provided so that an urging force in a direction approaching a straight line connecting the center with the planetary gear 75 can be applied.

  Specifically, on the inner surface of the rotary case 63, the pin 171 is erected at a position opposite to the side where the counter gear shaft 175 is located when viewed from the straight line connecting the centers of the sun gear 73 and the planetary gear 75. By applying a spring 170 made of a tension spring to the pin 171 and the counter gear shaft 175, an urging force in a direction approaching the pin 171 is applied to the counter gear shaft 175. As a result, an urging force is applied to the counter gear shaft 175 in a direction approaching a straight line connecting the centers of the sun gear 73 and the planetary gear 75 and the counter gear 74 is pressed against the sun gear 73 and the planetary gear 75. Is applied by a spring 170. As a result, backlash between the planting gears 72 can be removed, and play of the planting gear 72 can be suppressed.

  FIG. 21 is an explanatory diagram illustrating a modification of the seedling planting apparatus according to the first embodiment. When restraining the planting gear 72, the planting gear 72 may be configured to be maintained at an interval. For example, as shown in FIG. 21, the counter gear 74 and the planetary gear 75 are connected to each other by providing a connecting arm 180 that connects the counter gear shaft 175 and the planetary gear shaft 185 that is the rotation shaft of the planetary gear 75. The interval may be maintained. Thereby, since the counter gear 74 can be attracted to the planetary gear 75, the backlash between the planting gears 72 can be removed, and the backlash of the planting gear 72 can be suppressed.

  FIG. 22 is an explanatory diagram illustrating a modification of the seedling planting apparatus according to the first embodiment. When restraining the planting gear 72, it may be realized by applying an urging force in the axial direction to the planting gear 72. For example, as shown in FIG. 22, the planting gear 72 may be tapered, and an urging force may be applied to the counter gear 74 by a spring 190 from the opposite side in the direction of escape by the taper. Specifically, the planting gear 72 is reversely tapered by the sun gear 73 and the counter gear 74 and is reversely tapered by the counter gear 74 and the planetary gear 75.

  That is, the planting gear 72 is tapered in the same direction as the sun gear 73 and the planetary gear 75, and the counter gear 74 is tapered inversely with respect to the sun gear 73 and the planetary gear 75, so that each planting gear 72 is Engage. In this state, a spring 190 made of a compression spring is disposed between the end portion of the counter gear 74 on the larger taper side and the rotary case 63, and the end portion on the larger taper side of the counter gear 74 is disposed on the counter gear 74. An urging force is applied in a direction toward the end portion on the smaller taper side.

  As a result, the counter gear 74 is applied with a force in a direction in which the end on the side with the larger taper approaches in the axial direction in which the end on the side with the larger taper of the sun gear 73 or the planetary gear 75 is located. Thus, a force in the direction in which the tapered surface is pressed is applied. As a result, the counter gear 74 can be pressed against the sun gear 73 and the planetary gear 75, so that backlash between the planting gears 72 can be removed and play of the planting gear 72 can be suppressed.

  FIG. 23 is an explanatory diagram illustrating a modification of the seedling planting apparatus according to the first embodiment. Moreover, the seedling transplanting machine 1 including the seedling planting apparatus according to the first embodiment may be configured to be capable of slip control during traveling. As an example of the configuration of the seedling transplanting machine 1 capable of slip control, for example, the steering mechanism includes a potentiometer 201 that detects an operation angle of the handle 32 and electrically generates an assist force when the handle 32 is operated. A so-called EPS (Electric Power Steering) device 202 is provided. Further, the left and right rear wheels 5 are each independently provided with a torque sensor 205 for detecting the rotational torque of the rear wheel 5 and a clutch 206 capable of switching between transmission and interruption of the rotational torque to the rear wheel 5. .

  The potentiometer 201, EPS device 202, torque sensor 205, and clutch 206 are all mounted on the seedling transplanter 1 and connected to a controller 200 that is an electronic control device that controls each device. That is, the detection values of the potentiometer 201 and the torque sensor 205 are transmitted to the controller 200 and used when the controller 200 controls each device. The EPS device 202 and the clutch 206 are appropriately controlled by the controller 200 according to the state of the seedling transplanter 1.

  In this seedling transplanter 1, during normal turning, the front wheel 4 is steered while generating an assist force by the EPS device 202 by operating the handle 32. For steering the handle 32, the potentiometer 201 detects the steering, and controls the clutch 206 in accordance with the detected steering angle, so that the clutch 206 inside the turn is disengaged step by step. As a result, the rotational torque is transmitted to the rear wheel 5 outside the turning, while the rotational torque is cut off stepwise at the rear wheel 5 inside the turning. Thereby, the seedling transplanter 1 can turn smoothly.

  In such a seedling transplanter 1, when the potentiometer 201 detects that the vehicle is traveling straight ahead, if the torque sensor 205 detects that there is a difference in rotational torque between the left and right rear wheels 5, The slip is controlled by controlling the on / off of the clutch 206 by the controller 200 according to the result. That is, when it is detected that the rear wheel 5 is idling based on the detection value of the torque sensor 205, the controller 200 intermittently engages / disengages the clutch 206 of the rear wheel 5 that is idling. Reduce slip.

  FIG. 24 is a flowchart showing an outline of a processing procedure when performing slip control of the seedling transplanter. When performing slip control of the seedling transplanter 1, first, a torque sensor value is detected (step ST101). That is, the rotational torques of the left and right rear wheels 5 are detected by the left and right torque sensors 205, respectively.

  Next, it is determined whether or not there is a slip (step ST102). This determination is made by the controller 200 based on the detection value of the torque sensor 205. The controller 200 determines that a slip has occurred in one of the left and right rear wheels 5 when the magnitudes of the rotational torques detected by the left and right torque sensors 205 differ by a predetermined amount or more. If it is determined by this determination that there is no slip (No at step ST102), the processing procedure is exited.

  On the other hand, if it is determined that there is a slip due to a difference of more than a predetermined difference between the rotational torques detected by the left and right torque sensors 205 (step ST102, Yes determination), the clutch 206 of the slipped wheel is engaged. Cut (step ST103). In other words, the rear wheel 5 on which the relative rotational torque is significantly smaller than the other of the rotational torques of the left and right rear wheels 5 detected by the torque sensor 205 is slipped. Therefore, the clutch 206 of the rear wheel 5 on this side is turned on and off by the controller 200. Thereby, since the rotational torque transmitted to the rear wheel 5 on the side where the slip is generated becomes small, the idling of the slipping rear wheel 5 can be reduced, and the slip can be reduced. As a result, it is possible to improve running performance when traveling on a slippery rough road such as a muddy field.

  Furthermore, when performing slip control, steering control may be used together. FIG. 25 is a flowchart showing an outline of a processing procedure when slip control of the seedling transplanter is performed. When slip control is performed together with steering control, the torque sensor 205 detects the torque sensor values of the left and right rear wheels 5 (step ST101), and the torque sensor 205 detects whether or not there is a slip. A determination is made based on the value (step ST102). If it is determined by this determination that there is slip (Yes in step ST102), the clutch 206 of the slipped wheel is turned on and off (step ST103). Thereby, the rotational torque transmitted to the rear wheel 5 on the side where the slip is generated is reduced, and the slip is reduced.

  Further, the steering amount of the clutch 206 is automatically corrected according to the on / off amount (step ST104). That is, by controlling the EPS device 202 by the controller 200 according to the torque sensor value detected by the left and right torque sensors 205, the direction of the traveling vehicle body 2 that changes due to the slip of the rear wheel 5 with respect to the traveling direction is controlled. , Orient along the direction of travel. Specifically, the front wheel 4 is steered by operating the EPS device 202 so that the traveling vehicle body 2 is oriented along the traveling direction. Thereby, even when the direction of the traveling vehicle body 2 changes with respect to the traveling direction due to the rear wheel 5 slipping, the direction of the traveling vehicle body 2 can be corrected and the vehicle can travel straight ahead. As a result, it is possible to improve the running stability when traveling on a rough road and improve the running stability.

  These slip controls may be performed at a time other than straight traveling, that is, at the time of turning. When performing slip control during turning, the steering angle of the handle 32 is detected by the potentiometer 201, and when performing on / off control of the clutch 206, on / off control according to the steering angle is performed based on the detected steering angle. . Thereby, the slip at the time of turning can be suppressed, and the traveling property at the time of driving | running | working on a rough road can be improved more reliably.

  In the seedling planting device 60 described above, there are two planting ridges 61 provided in the rotary case 63, but the number of planting ridges 61 provided in one rotary case 63 may be other than two, and three or more. But you can. By providing a plurality of planting rods 61 in the rotary case 63, it is possible to increase the number of seedlings planted per rotation of the rotary case 63, so that the efficiency of planting work can be improved.

  Moreover, the seedling planting apparatus 60 may combine the structure, control, etc. which are used by embodiment mentioned above and the modification suitably, or may use other than the structure and control mentioned above. For example, the first embodiment and the fourth embodiment are combined, and the lubricating groove 85 similar to that in the first embodiment is formed in the push cam 82, and the lubricating hole 150 similar to that in the fourth embodiment is formed in the push arm 91. Good. Regardless of the configuration and control method of the seedling planting device 60, at least one of the extrusion cam 82 and the extrusion arm 91 is formed with a lubrication groove 85, a lubrication hole 140, and the like as a communicating portion capable of moving the lubricant. As a result, the lubricating oil can be supplied to locations where the lubricating oil is difficult to reach due to the arrangement of the extrusion mechanism 90 and the extrusion cam 82, so that seizure due to insufficient supply of the lubricating oil is prevented and the wear of the member is suppressed. be able to.

DESCRIPTION OF SYMBOLS 1 Seedling transplanter 2 Traveling vehicle body 4 Front wheel 5 Rear wheel 10 Engine 15 Power transmission device 16 Hydraulic continuously variable transmission 17 Belt type power transmission mechanism 18 Mission case 21 Front wheel final case 22 Rear wheel gear case 30 Control part 32 Handle 40 Seedling Attachment part raising / lowering mechanism 41 Elevation link device 47 Float 50 Seedling planting part 51 Seedling mounting base 53 Front plate 60 Seedling planting device 61 Planting basket 63 Rotary case 64 Planting transmission case 65 Planting rod rotation shaft 70 Unequal speed transmission Mechanism 72 Planting gear 80 Planting case 81 Planting finger (seedling member)
82 Extrusion cam (actuating member)
83 Operating surface 84 Non-operating surface 85, 145 Lubrication groove (communication part)
DESCRIPTION OF SYMBOLS 90 Extrusion mechanism 91 Extrusion arm 92 Contact surface 93 Extrusion part 95 Extrusion fork (extruded body)
96 Extrusion spring 97 Push rod 100 Bush (bearing member)
DESCRIPTION OF SYMBOLS 101 Groove part 110 Reserve seedling stand 120 Fertilizer application 130 Rotor for leveling 140,150 Lubrication hole (communication part)

Claims (9)

A seedling mounting table for mounting seedlings to be planted in the field;
A planting pot for planting the seedling in the field while rotating;
A seedling removing member that is attached to the outside of the planting pot and scrapes the seedling from the seedling mounting table,
An actuating member that is rotatably installed in the implantation pot;
A push-out arm that is pivotally provided in the implant cage and contacts the actuating member in a predetermined range of the rotating actuating member and is spaced apart from the actuating member in another predetermined range;
An extrudate that operates with rotation of the push arm and pushes out the seedling taken by the seedling removal member and moves it to the field;
A communicating part formed on at least one of the actuating member or the pushing arm, so that the lubricant injected into the implant basket is movable;
A seedling planting apparatus comprising: A rotary case comprising a plurality of said implanting ridges;
An implant shaft rotating shaft for rotating the implant rod;
A push spring that biases the push arm in a direction to contact the actuating member;
With
The actuating member is attached to the implanting rod rotating shaft,
The seedling planting apparatus according to claim 1, wherein the communication portion is formed at least on the push-out arm. The actuating member is on the outer peripheral surface,
An operating surface that contacts the pusher arm while sliding and rotates the pusher arm by applying an actuating force to the pusher arm;
A non-actuating surface that does not contact the pusher arm and does not impart an actuating force to the pusher arm;
Have
3. The seedling planting device according to claim 1, wherein the communication portion is formed on the operating surface of the operating member along the sliding direction. The actuating member is on the outer peripheral surface,
An operating surface that contacts the pusher arm while sliding and rotates the pusher arm by applying an actuating force to the pusher arm;
A non-actuating surface that does not contact the pusher arm and does not impart an actuating force to the pusher arm;
Have
3. The seedling planting device according to claim 1, wherein the communication portion is formed in the operation member as a hole that penetrates the operation member and has both ends opened to the operation surface. 4. The push arm has a contact surface to which an operating force is applied from the operating member while making contact with the operating member while sliding.
5. The seedling planting device according to claim 1, wherein the communication part is formed on the contact surface of the push-out arm along the sliding direction. The extrusion arm has an extrusion section for operating the extrusion body,
The communicating part penetrates the pusher arm, and both ends are formed in the pusher arm as holes that open to an end part of the pusher arm that contacts the operating member and the pusher part of the pusher arm. The seedling planting device according to any one of claims 1 to 5, wherein the seedling planting device is provided. The extrudate is supported by a bearing member provided in the implantation cage,
The seedling planting according to any one of claims 1 to 6, wherein the extruded body is formed with a groove portion that communicates positions on both sides of the bearing member in the operating direction of the extruded body. apparatus.   The seedling planting apparatus according to claim 7, wherein the groove is formed in the extruded body in a spiral shape with an operation direction of the extruded body as an axis. The actuating member is such that the distance from the rotating shaft of the actuating member to the actuating surface is greater on the other end side than the one end side in the axial direction of the rotating shaft,
In the planting pot,
The urging force in the direction along the rotation axis and the urging force in the direction in which the end of the operation surface on the side where the distance from the rotation axis is small is in contact with the pusher arm is applied to the operation member. A biasing member to be applied;
A locking member that fixes a contact position of the operating surface with respect to the push-out arm at a predetermined position in the rotation axis direction by fixing the movement of the operation member in the rotation axis direction at a predetermined position;
The seedling planting apparatus according to claim 3 or 4, wherein the seedling planting apparatus is provided.

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