JP2018110538A - Seedling planting device of seedling transplanting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve durability of a seedling planting device by eliminating the oozing-out of lubricant from a sliding unit of a planting rod case and an extrusion fork and the entry of field water into the planting rod case.SOLUTION: A seedling planting device of a seedling transplanting machine is characterized as follows: an extrusion fork 95 pivoted with a pivoting member 100 and holding a case projecting side in an air-tight manner with a seal member 105 in a planting rod case 80 is reciprocated and driven by an extrusion cam 82 rotating in the planting rod case 80; an oil groove 101a is provided in an outer circumference or a support hole 101 of the pivoting member 100 along an axial direction, in a seedling planting device 60 for pushing the seedling scraped by seedling picking fingers 81 using an extrusion body 104 provided at the tip of the extrusion fork 95; and an oil hole 106 in communication with an extrusion cam 82 side inner cavity in the planting rod case 80 from the oil groove 101.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a seedling planting device for a seedling transplanter.

  The seedling transplanting device provided in the seedling transplanter described in Patent Document 1 scrapes seedlings from a seedling mounting table with a seedling picking finger while rotating as the rotary case rotates, and embeds seedlings in a field with an extrusion fork. Equipped with planting pots to plant seedlings.

  More specifically, this seedling planting device includes a rotating push cam, a push arm that contacts or moves away from the push cam according to the rotation state of the push cam, and a push claw inside the planting case. An extrusion fork and an extrusion spring for applying an urging force to the extrusion fork are provided. When the contact between the push cam and the push arm is released by the rotation of the push cam, the push arm is rotated by the urging force of the push spring, and the push fork is slid forward and supported by the seedling picking claws. The seedling is planted by allowing the root of the seedling to enter the soil. In addition, lubricating oil for lubricating the respective constituent members is enclosed in the interior of the implanted tub case.

JP 2014-135946 A

  The seedling planting device performs seedling planting operation in a field where water is stored, but since the extrusion fork repeatedly moves out and withdraws from the planting basket case, the air pressure in the planting basket case The seedling planting device is caused by the lubricating oil oozing out from the sliding part of the planted cocoon case and the extrusion fork due to fluctuations, contaminating the field, or the water in the field is sucked into the planted cocoon case and the lubricant is deteriorated. There is a problem that the durability of the battery is lowered.

  Therefore, the present invention provides a lubricating oil from the sliding portion of the planting cocoon case and the extrusion fork in the seedling planting device in which the extrusion fork provided along the seedling finger slides out of the planting cocoon case to plant the seedling. It is an object of the present invention to improve the durability of the seedling planting device by eliminating the seepage of the seedling and the intrusion of the water in the field into the planting pot case.

  The problems of the present invention are solved by the following technical means.

  According to the first aspect of the present invention, an extrusion fork 95 that is pivotally supported on the implant jar case 80 by the shaft support member 100 and is airtightly held by the seal member 105 is rotated in the implant pod case 80. In a seedling planting device 60 that reciprocates with an extrusion cam 82 and pushes out a seedling scraped off by a seedling picking finger 81 with an extruded body 104 provided at the tip of the extrusion fork 95, a shaft is inserted into the outer periphery of the shaft support member 100 or the support hole 101. An oil groove 101a is provided along the direction, and an oil hole 106 leading from the oil groove 101a to a lumen on the push cam 82 side in the implantation rod case 80 is provided. A device.

  According to the second aspect of the present invention, the push-out fork 95 that is pivotally supported by the shaft support member 100 with the shaft support member 100 and is airtightly held by the seal member 105 is rotated in the planting case case 80. In the seedling planting device 60 that pushes out the seedling that the seedling-picking finger 81 scrapes with the extruded body 104 provided at the tip of the extrusion fork 95 by reciprocating driving by the extrusion cam 82, the seedling-picking finger 81 is attached to the planting case 80 A seedling transplanting machine characterized in that a mounting screw hole 89 of a bolt 88 is communicated to a shaft support member 100 of an extrusion fork 95 and a blister groove 81a communicating with the mounting screw hole 89 is provided on a mounting surface of the seedling picking finger 81. Use a seedling planting device.

  The invention described in claim 3 is characterized in that the open end 81a1 of the blister groove 81a formed in the seedling picking finger 81 is on the water surface during the seedling planting operation of the seedling planting device 60. It is set as the seedling planting apparatus of the seedling transplanting machine of Claim 2.

  According to the first aspect of the present invention, in the portion of the shaft support member 100 that pivotally supports the extrusion fork 95 on the implantation rod case 80, the internal pressure fluctuation of the implantation rod case 80 that occurs as the extrusion fork 95 reciprocates is driven. Since the lubricating oil escapes from the oil groove 101a through the oil hole 106 to the wide lumen on the side of the push-out cam 82 of the implantation rod case 80 and the pressure fluctuation is alleviated, the oil pressure applied to the seal member 105 is reduced and the oil is reduced. There is no oozing or inhalation of external water, improving the durability of the seedling planting device.

  In the invention according to claim 2, the lubricating oil or air present on the outer periphery of the shaft support member 100 of the extrusion fork 95 attaches the seedling-picking finger 81 to the planting cocoon case 80 as the extrusion fork 95 reciprocates. Since it passes through the blister groove 81a formed on the mounting surface of the bolt 88 and the mounting surface of the seedling finger 81 to the outside air on the water surface of the field, the internal pressure fluctuation is released, so the pressure on the seal member 105 of the extrusion fork 95 is reduced. Reduce to prevent oil oozing and water ingress.

  In the invention according to claim 3, in addition to the effect of claim 2, it is possible to reliably prevent water from entering the implantation rod case 80 from the opening end 81a1 of the blister groove 81a.

It is a side view of a seedling transplanting machine provided with a seedling planting device. It is a top view of a seedling transplanting machine provided with a seedling planting device. It is a detailed side view of a seedling planting apparatus. It is an AA arrow top view of FIG. It is BB sectional drawing of FIG. It is principal part sectional drawing of an implantation ridge. It is detail drawing of an extrusion cam. It is a perspective view of an extrusion cam. It is the (A) side view and (B) front view of a winding prevention arm. It is sectional drawing of another Example implantation coffin case.

  Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings. In the description of the embodiment, the left and right directions in the forward direction of the aircraft are referred to as left and right, respectively, the forward direction is referred to as forward, and the backward direction is referred to as rear. However, the configuration of the present invention is not limited.

  FIG. 1 is a right side view of a seedling transplanter equipped with a seedling planting device, and FIG. 2 is a plan view of the seedling transplanter equipped with a seedling planting device. In the following description, the front / rear and left / right direction references are based on the traveling direction of the vehicle body as viewed from the cockpit.

  The traveling vehicle body 2 of the seedling transplanter 1 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 that drives all the wheels when 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, power of the engine 10 for front wheels 4, rear wheels 5, and a seedling planting portion 50. And a power transmission device 15 for transmitting to the device. That is, in this seedling transplanter 1, 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, such as a diesel engine or a gasoline engine. The heat 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 turns according to the steering operation of the handle 32 and can steer the front wheels 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 planting clutch has a configuration in which a clutch pawl that slides a drive shaft engages with a clutch pawl on the driven side to transmit power, and is shifted when the speed change lever 35 is shifted to a road travel position or a back travel position. Further, when the planting lift lever 36 is raised, the clutch is disengaged. This planting clutch is removed integrally so that maintenance work can be performed.

  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.

  Moreover, the seedling planting unit 50 can plant a seedling in a plurality of sections or a plurality of rows. In the seedling transplanting machine 1 of the present embodiment, so-called four-row planting, in which seedlings are planted in four sections. It is the seedling planting part 50. 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.

  The seedling planting device 60 is driven by the PTO shaft drive from the transmission case 18, but a transmission clutch mechanism is provided to link the transmission shifter of the transmission case 18 and the PTO shaft clutch so that the transmission lever can be shifted to travel. When shifting to reverse travel, the PTO shaft clutch is disengaged so that the seedling planting device 60 is not driven. The shift clutch mechanism is covered with a case, and can be removed and maintained for maintenance.

  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 an enlarged side view of the seedling planting device 60 shown in FIG. FIG. 4 is a plan view taken along the line AA in FIG. 3 in a state where the two seedling picking fingers 81 are turned so as to face downward. 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 and 75 that rotate, and counter gears 74 and 74 that are disposed between the two planetary gears 75 and 75 and the sun gear 73 and mesh with both the planetary gear 75 and the sun gear 73, respectively. I have. 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 the implantation rod case 80 shown in FIG. The planting basket 61 has a seedling removal finger 81 as a seedling removal member that scrapes the seedling from the seedling placement stand 51 mounted on the outside of the planting basket case 80, and the seedling scraped and held by the seedling collection finger 81 is extruded. An extruding mechanism 90 for extruding at 104 is housed in the implant ridge case 80. Further, the implantation rod case 80 is provided with an extrusion cam 82 which is an operating member for pushing the extrusion mechanism 90 so as to rotate around the implantation rod rotating shaft 65.

  The seedling picking fingers 81 are arranged in the lower part of the seedling placing table 51 and can take out the seedlings from the front plate 53 (see FIG. 3) that receives the seedlings in the lower part of the seedling placing table 51. Further, the push cam 82 is fixed to the implantation rod rotation shaft 65 and rotates with the rotation of the implantation rod rotation shaft 65.

  In detail, the seedling collection finger 81 is attached with two bolts 88 to the outside of the planting ridge case 80 in which a space is formed inside. The position of the bolt 88 is a support hole according to the present invention in which the shaft of the push-out fork 95 is removed and the screw hole 89 passes through the meat portion of the implantation rod case 80 and holds the bush 100 which is a shaft support member of the present invention. A certain bush hole 101 is reached. The seedling finger 81 has a bar-like shape with a bifurcated tip, and the base side surface of the seedling finger case 80 is attached to the side surface of the seedling case 80. A blister groove 81a communicating with the screw hole 89 is formed on the base side surface thereof, and the lubricating oil in the bush hole 101 is communicated to the outside air through the screw hole 89 and the blister groove 81a, and the internal pressure fluctuation accompanying the slide of the extrusion fork 95 is released to the outside air. I am doing so. The opening end 81 a 1 of the blister groove 81 a is set so that the groove does not penetrate into the screw hole 89 on the attachment side of the seedling collection finger 81 so that water does not enter from the tip side of the seedling collection finger 81. The screw hole 89 can be ventilated through the screw groove even if the bolt 88 is tightened, but a ventilation groove may be provided along the screw hole. The opening end 81a1 of the blister groove 81a and the head of the bolt 88 are positioned on the water surface of the field during the seedling planting operation of the seedling picking finger 81, so that water is not sucked.

  If the bolt 88 is always located on the water surface of the field, a blister hole may be provided at the axial center of the bolt 88.

  The push-out mechanism 90 has a push-out arm 91 that is rotatably provided on the arm shaft 86 in the planting basket case 80, and a push-out fork that has a push-out body 104 that pushes out the seedling taken by the seedling-picking finger 81 and moves it to the field. 95. Among these, the pushing arm 91 has one end connected to the pushing fork 95 with a pin 103 and the other end approaching the pushing cam 82.

  Further, the push arm 91 has an end on the push cam 82 side that is in sliding contact with the push cam 82 in a predetermined range of the rotating push cam 82 and is separated from the push cam 82 in another predetermined range of the push push cam 82. The intermediate portion of the push-out arm 91 is received by the buffer 87 in the implantation rod case 80. 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 pushing arm 91 has a contact surface 92 that slides on the pushing cam 82 at the end of the pushing arm 91 on the pushing cam 82 side, and according to the contact state of the contacting surface 92 with respect to the pushing cam 82, The pushing arm 91 is provided so as to rotate.

  The extrusion fork 95 is provided in a direction parallel to the seedling picking fingers 81 and extends from the inner side to the outer side of the planting basket case 80. Specifically, the extrusion fork 95 extends from the inner side of the planting basket case 80 to the outer side of the planting basket case 80 to the extruded body 104 along the tip of the bifurcated seedling collecting finger 81. doing. 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 arranged along the seedling collecting finger 81 so as to be able to move out and withdraw. It is installed.

  In the implantation rod case 80, double push springs 96a and 96b for applying a biasing force to the spring receiver 102 of the push fork 95 are provided. The spring receiver 102 is connected to the extrusion fork 95 with a pin 103 and is arranged so that a biasing force in a direction in which the extrusion fork 95 protrudes from the implantation rod case 80 can be applied to the extrusion 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 push-out arm 91 connects the push-out portion 93 on the push-out fork 95 side of the push-out arm 91 by the pin 103 together with the spring receiver 102, and the push-out spring 96 in the rotating state when the contact surface 92 contacts the push-out cam 82. Is provided so as to apply a force against the urging force from the pushing portion 93 to the pushing 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 push-out portion 93 can apply a force against the urging force from the push-out spring 96 to the push-out fork 95 in a state where the spring stand 102 is held between the two protrusions by holding the spring plate 102 between the two protrusions. ing.

  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 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, a lubricating oil that is a lubricant is injected into the implantation cage case 80 in which a plurality of operating members such as the extrusion cam 82 and the extrusion fork 95 are housed.

  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.

  In the extrusion fork 95, the shaft portion of the extrusion fork 95 is supported by a bush 100 which is a bearing member. The bush 100 is formed in a cylindrical shape having an inner diameter that is substantially the same as the outer diameter of the shaft portion of the extrusion fork 95 and a slightly larger diameter. The bush 100 is held in the bush hole 101 of the implantation rod case 80, and the shaft portion of the extrusion fork 95 is supported by the bush 100. A buffer ring 98 and a collar 99 are interposed between the bush 100 and the spring receiver 102. An axial hole is made in the ring portion of the buffer ring 98 for lubrication.

  In addition, the shaft portion of the extrusion fork 95 is in close contact with the shaft portion of the extrusion fork 95 at the portion where the shaft portion of the extrusion fork 95 protrudes to the outside. In other words, the portion of the implant ridge case 80 from which the shaft portion of the extrusion fork 95 protrudes is sealed by the seal member 105.

  The bush hole 101 is provided with an oil groove 101a along the axial direction, and this oil groove 101a passes through the flesh portion of the implantation rod case 80 through a relief hole 106 that communicates with the inner side of the extrusion cam 82. Then, the internal pressure fluctuation generated around the bush 100 when the push-out fork 95 retreats is released to the lumen on the push cam 82 side to relieve the pressure fluctuation, so that the lubricating oil flows out through the seal member 105 and the Without contaminating the water, it is possible to prevent the water from invading and lowering the durability of the components in the planting pot case 80. Maintenance work can be improved since the work of removing the ink becomes unnecessary.

  The oil groove 101a may be provided on the outer periphery of the bush 100 along the axial direction.

  Extrusion springs 96a and 96b of the extrusion fork 95 are received by the spring receiving portion 108 of the implantation rod case lid 107. The spring receiving portion 108 is formed with a long screw hole for attaching the grease nipple 109, and the extrusion spring 96a. , 96b, the small-diameter convex portion 95a of the extrusion fork 95 is inserted. A cap 111 is attached to the grease nipple 109 to prevent water from entering.

  In addition, although the said seedling picking finger 81 has provided the blister groove | channel 81a and relieve | moderated the internal pressure fluctuation | variation, it is also possible to make the screw hole 89 of the implantation ridge case 80 not reach the bush hole 101. FIG. In other words, the base of the seedling collecting finger 81 is fixed with a U-shaped presser sandwiching the mounting surface of the planting cocoon case 80 with a bolt that traverses the meat part of the planting cocoon case 80, or the bush hole of the planting cocoon case 80 It is preferable that a screw hole 89 is provided so as not to penetrate through a thick portion away from 101 and a bolt 88 is fastened to the screw hole 89.

  Alternatively, when the bolt hole extends into the inner cavity of the implantation rod case 80, a stud bolt coated with a sealing material for sealing the thread groove is raised on the implantation rod case 80 side, and a seedling finger is formed on the stud bolt with a nut. 81 may be attached.

  Alternatively, an insert nut that is tightened while cutting the tap at the outer diameter portion is planted in the thick portion of the planting cocoon case 80, or an insert nut with a bottom is inserted and bonded, and the seedling finger 81 is fixed with the bolt 88. It is also possible to do.

  An oil injection port is formed in the implantation cage case lid 107 and is closed with an oil stopper 112.

  As shown in FIG. 9, the wrapping prevention rod 78 projecting around the case of the implantation rod rotating shaft 65 and attached to the implantation rod case 80 is inserted into the insertion portion 78 a and the implantation rod case 80 inserted into the fixing hole of the implantation rod case 80. There is a bolt fixing portion 78b for fixing with a bolt to be attached, and the wrapping prevention arm portion 78c is protruded from the implantation rod case 80 toward the rotary case 63 and fixed.

  FIG. 10 shows an embodiment in which an anti-winding projection 79 is integrally formed on the planting rod case 80 instead of the anti-winding rod 78, and has a shape projecting like a wing of an aircraft toward the rotary case 63.

  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 basket 61 has a rotation angle of the planting basket 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 the state where the tip of the seedling picking 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 placement 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 removed 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 trajectory 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 stand 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 where the tip of the portion that is outside the planting fold case 80 is away from the tip of the seedling finger 81.

  The pushing cam 82 is in a state where 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 collecting finger 81 is positioned below 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 protruding amount from the planting pod 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 finger 81. It becomes a state located in the vicinity.

  The push-out cam 82 rotates when the seedling-taking finger 81 scrapes off the seedling from the seedling placing table 51 and then places the seedling in the lower position in the planting locus T at the tip of the seedling-taking finger 81. 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 applied to the pushing fork 95 when the tip of the seedling picking finger 81 is positioned below the planting locus T to plant the seedling. , Projecting in the direction of the tip of the seedling collecting finger 81 and extending from the planted cocoon case 80.

  Thereby, the extrusion fork 95 scrapes off the seedling picking finger 81 from the seedling placing table 51 and pushes out the seedling held by the seedling picking 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 by the seedling picking finger 81 from the seedling placing table 51 with the extrusion fork 95 by the rotation of the planting basket 61 in this way.

  When the tip of the seedling picking finger 81 has passed the state of planting the seedling in the planting locus T, the operating surface 83 of the rotating push cam 82 comes into contact with the contact surface 92 of the push arm 91 again. 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.

  The seedling planting device 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 extrudes the seedling taken by the seedling collection finger 81 to 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.

DESCRIPTION OF SYMBOLS 60 Seedling planting device 80 Planting case 81 Seedling finger 81a Blister groove 82 Extrusion cam 88 Bolt 89 Mounting screw hole 95 Extrusion fork 100 Shaft support member 101 Support hole 101a Oil groove 104 Extrudate 105 Seal member 106 Oil hole

Claims (3)

  An extrusion fork (95), which is pivotally supported by a shaft support member (100) on the implant jar case (80) and is airtightly held by a seal member (105), is rotated in the implant potato case (80). In the seedling planting device (60), which is reciprocally driven by the pushing cam (82), and pushes out the seedling scraped off by the seedling picking finger (81) by the extruded body (104) provided at the tip of the pushing fork (95), the shaft An oil groove (101a) is provided along the axial direction in the outer periphery of the support member (100) or in the support hole (101), and the push cam (82) in the implantation rod case (80) extends from the oil groove (101a). A seedling transplanting device for a seedling transplanting machine, characterized in that an oil hole (106) leading to a side lumen is provided.   An extrusion fork (95), which is pivotally supported by a shaft support member (100) on the implant jar case (80) and is airtightly held by a seal member (105), is rotated in the implant potato case (80). In the seedling planting device (60), the seedling planting device (60) is driven to reciprocate by an extruding cam (82) and pushes out seedlings scraped off by a seedling picking finger (81) by an extruded body (104) provided at a tip of the extrusion fork (95). The attachment screw hole (89) of the bolt (88) for attaching the take-up finger (81) to the planting case (80) is led to the shaft support member (100) of the push-out fork (95) and the seedling take-up finger (81) A seedling transplanting device of a seedling transplanting machine, wherein a blister groove (81a) communicating with the mounting screw hole (89) is provided on the mounting surface.   The open end (81a1) of the blister groove (81a) formed in the seedling picking finger (81) is on the water surface during the seedling planting operation of the seedling planting device (60). Item 3. A seedling transplanting device for a seedling transplanting machine according to Item 2.

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