WO2015146911A1 - Seedling transplanter - Google Patents
Seedling transplanter Download PDFInfo
- Publication number
- WO2015146911A1 WO2015146911A1 PCT/JP2015/058736 JP2015058736W WO2015146911A1 WO 2015146911 A1 WO2015146911 A1 WO 2015146911A1 JP 2015058736 W JP2015058736 W JP 2015058736W WO 2015146911 A1 WO2015146911 A1 WO 2015146911A1
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- WO
- WIPO (PCT)
- Prior art keywords
- leveling device
- leveling
- case
- rear axle
- clutch
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C11/00—Transplanting machines
- A01C11/003—Transplanting machines for aquatic plants; for planting underwater, e.g. rice
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
Definitions
- the present invention relates to a seedling transplanter equipped with a leveling device for headland leveling.
- Patent Document 1 discloses a rice transplanter that connects and disconnects a clutch mechanism of a leveling device by a link mechanism that interlocks with a lifting operation of a lifting device that lifts and lowers a planting unit.
- a maintenance-free configuration is realized by providing a link mechanism on the upper surface side of the rear axle case serving as a transmission path of the leveling device, and performing clutch connection / disconnection using the link mechanism. .
- the present invention simplifies the configuration capable of disconnecting the clutch mechanism of the leveling device when the planting part is raised or the leveling device is stored, and the clutch mechanism of the leveling device is reliably disconnected when the planting part is raised. It is an object of the present invention to provide a possible seedling transplanter and to provide a configuration that can be easily applied to existing seedling transplanters.
- the seedling transplanter of the present invention includes a leveling device for headland leveling in front of a planting portion, and power for driving the leveling device is transmitted from an engine via a rear axle case, and the rear axle case A clutch mechanism for transmitting or interrupting power to the leveling device, the clutch mechanism including a first wire connected to a member that moves as the planting unit ascends, and ascending the planting unit Accordingly, the first wire is operated to disconnect the clutch mechanism.
- the clutch mechanism includes a second wire connected to a member that moves as the leveling device is raised and stored, and the second wire is operated as the leveling device is raised and stored. As a result, the clutch mechanism is disconnected.
- the clutch mechanism includes a clutch lever that is connected to the first wire and the second wire and disconnects the clutch mechanism by the operation thereof, and the clutch lever is located above the bottom surface of the rear axle case and the rear axle. It is arranged at the front of the case overhanging to the side.
- the rice transplanter 1 includes an engine 2, a power transmission unit 3, a planting unit 4, and a lifting unit 5.
- the planting unit 4 is connected to the airframe via the lifting unit 5 and can be moved up and down by the lifting unit 5. Power from the engine 2 is transmitted to the planting unit 4 via the power transmission unit 3.
- the rice transplanter 1 plants seedlings in the field by the planting unit 4 while traveling by driving the engine 2.
- the driving force from the engine 2 is transmitted to the PTO shaft 7 through the transmission case 6 in the power transmission unit 3.
- the PTO shaft 7 is provided to protrude rearward from the mission case 6. Power is transmitted from the PTO shaft 7 to the planting center case 8 via the universal joint, and the planting unit 4 is driven.
- a drive shaft 9 is provided rearward from the mission case 6, and a driving force is transmitted from the drive shaft 9 to the rear axle case 10.
- a plurality of floats 11 are arranged in front of the planting position in the planting unit 4.
- a leveling device 30 is arranged in front of the float 11.
- the elevating unit 5 includes a top link 12, a lower link 13, a link mechanism including a hitch 14 connected to the rear ends of the top link 12 and the lower link 13, and a cylinder that is attached to the lower link 13 and operates the link mechanism.
- a planting center case 8 is disposed below the hitch 14, and the rolling support shaft of the planting unit 4 (the seedling stage 15) is disposed in the planting center case 8.
- the front ends of the top link 12 and the lower link 13 are connected to a mounting frame 17 provided at the rear end of the center frame 16.
- the rear axle case 10 is attached to the lower end of the attachment frame 17.
- the transmission case 6 includes a hydraulic-mechanical continuously variable transmission (HMT) 21, a main transmission mechanism 22, a main clutch 23 that switches transmission of power from the HMT 21 to the main transmission mechanism 22, and an output shaft of the main transmission mechanism 22.
- a braking device 24 is provided for braking the rotation.
- the power from the engine 2 is transmitted to the left and right front axle cases 25 and 25 through the HMT 21 and the main transmission mechanism 22 in the transmission case 6, and the left and right front wheels 26 and 26 are driven.
- the leveling drive shaft 27 extends rearward from the rear axle case 10, and power is transmitted to the leveling transmission shaft 28 that is interlocked and connected to the leveling drive shaft 27 via a universal joint or the like. Then, power is transmitted to the leveling device 30 by the leveling transmission shaft 28 and the leveling device 30 is driven.
- the leveling device 30 includes a drive shaft 32 that protrudes from both sides of a transmission case 31 that receives input from the leveling transmission shaft 28, and a plurality of leveling rotors 33 that are fixed to the drive shaft 32.
- the leveling device 30 is attached to the seedling stage frame 50 of the planting unit 4 via the support link mechanism 40.
- the support link mechanism 40 supports the leveling device 30 so that it can be moved up and down (rotated) with respect to the planting unit 4. That is, the leveling device 30 (the transmission case 31, the drive shaft 32, and the leveling rotor 33) can change the height with respect to the planting unit 4 according to the elevation of the support link mechanism 40.
- the support link mechanism 40 connects the link support shaft 41 provided along the extending direction of the leveling device 30, the links 42 fixed to both ends of the link support shaft 41, the link 42 and the leveling device 30, and the leveling device 30.
- Supporting arm 43 and auxiliary link 44 that connects the lower end of supporting arm 43 and seedling mounting frame 50 are provided.
- the link support shaft 41 is rotatably supported by the seedling stage frame 50 via the arm 45 at both ends.
- the link 42 rotates and the support arm 43 moves up and down as the link support shaft 41 rotates, so that the seedling mounting frame 50 (planting unit) of the leveling device 30 is moved.
- the height with respect to 4) can be changed.
- an operation lever 46 for rotating the link support shaft 41 is provided in the middle of the link support shaft 41.
- the link support shaft 41 can be rotated to adjust the height of the leveling device 30.
- a lever guide 47 for supporting the position of the operation lever 46 and determining the height of the leveling device 30 is supported by the seedling stage frame 50.
- the support link mechanism 40 is attached to the seedling stage frame 50 by fixing the arm 45 and the lever guide 47 of the support link mechanism 40 to the seedling stage frame 50.
- the leveling device 30 is attached to the seedling stage frame 50 via the support link mechanism 40.
- the rear axle case 10 is provided with a clutch mechanism 60 that switches whether power is transmitted to the leveling device 30.
- the clutch mechanism 60 transmits or blocks the power transmitted from the drive shaft 9 to the rear axle case 10 to the leveling drive shaft 27.
- the clutch mechanism 60 includes a shifter 61 slidably fitted on the leveling drive shaft 27, a clutch pawl 62 formed on the shifter 61, a clutch spring 63 that biases the shifter 61, and a shifter 61 against the clutch spring 63.
- the cam shaft 64 is provided.
- the cam shaft 64 extends outward from the rear axle case 10 and is connected to a clutch arm 65 provided outside the rear axle case 10.
- the other side of the clutch pawl 62 is provided in a spur gear 66 (see FIG. 2) to which power is transmitted from the drive shaft 9.
- the clutch mechanism 60 configured as described above, when the clutch arm 65 is pulled, the cam shaft 64 is rotated, and the shifter 61 is slid to disconnect the clutch.
- the spur gear 66 meshes with a spur gear forming portion 67 a of a gear body 67 provided on the drive shaft 9.
- a flat gear forming portion 67a and a bevel gear forming portion 67b are integrally formed on the gear body 67, and the bevel gear forming portion 67b meshes with a bevel gear 68 for driving the rear wheels. That is, in the rear axle case 10, an upper and lower two-layer structure is adopted in which the upper part is a transmission system for driving rear wheels and the lower part is a transmission system for driving the leveling device 30.
- two wires 70 and 80 are connected to the clutch arm 65, and it is possible to operate the clutch arm 65 by operating one of the wires 70 and 80. It is comprised so that it may become.
- the wires 70 and 80 are an embodiment of a coupling tool, and any link mechanism, lever, arm, or the like can be used as long as the clutch arm 65 can be operated in conjunction with the coupling tool. The configuration can be appropriately adopted.
- the first wire 70 is connected to the lower link 13 and is pulled as the lower link 13 moves upward, that is, as the planting part 4 rises.
- the second wire 80 is connected to the operation lever 46 and is pulled when the operation lever 46 is operated to the uppermost storage position, that is, when the leveling device 30 is raised and stored. When either one of these wires 70 and 80 is pulled, the clutch of the leveling device 30 is disconnected via the clutch arm 65.
- An outer receiver 69 for fixing the wire outers 71 and 81 of the wires 70 and 80 is provided on the upper front surface of the rear axle case 10.
- the other side of the wire outer 71 of the first wire 70 is fixed to an outer receiver 72 provided on the mounting frame 17 of the center frame 16.
- the first wire 70 extending from the outer receiver 72 is connected to a wire mounting seat 73 provided at the front portion of the lower link 13.
- the first wire 70 that connects the clutch arm 65 provided on the outer surface of the rear axle case 10 and the lower link 13 is provided.
- the bending angle of the universal joint connecting the leveling drive shaft 27 and the leveling transmission shaft 28 or the universal joint provided between the leveling transmission shaft 28 and the transmission case 31 increases as the planting part 4 rises. Suppressing the rotational drive in such a state can improve the life of the universal joint and improve the durability of the transmission mechanism.
- the mounting positions of the outer receiver 72 and the wire mounting seat 73 are not limited to those described above, and any position where the distance between the outer receiver 72 and the wire mounting seat 73 increases as the lower link 13 rises can be employed.
- the other side of the wire outer 81 of the second wire 80 is fixed to an outer receiver 82 provided on the lower surface of the lever guide 47 fixed to the seedling stage frame 50.
- the second wire 80 extending from the outer receiver 82 is fixed to the rotating base of the operation lever 46 and connected to a wire mounting seat 83 that moves up and down with the rotation. In this way, the second wire 80 that connects the clutch operating clutch arm 65 provided on the outer surface of the rear axle case 10 and the operation lever 46 is provided.
- the operation lever 46 When the operation lever 46 is rotated upward and operated to the uppermost storage position, the distance between the outer receiver 82 and the wire mounting seat 83 becomes larger than a predetermined value, and the second wire 80 is pulled and the clutch arm is pulled. 65 operates and the clutch of the leveling device 30 is disengaged. Accordingly, the clutch is disconnected following the storing operation of the leveling device 30. That is, the driving of the leveling device 30 can be surely stopped when the leveling device 30 is not used, for example, when traveling on the road.
- the mounting positions of the outer receiver 82 and the wire mounting seat 83 are not limited to those described above, and any position where the distance between the outer receiver 82 and the wire mounting seat 83 increases with the upward rotation of the operation lever 46 can be adopted. .
- the optimum mounting positions of the outer receivers 72 and 82 and the wire mounting seats 73 and 83 are determined.
- the wires 70 and 80 may be loosened.
- the outer receivers 72 and 82 and the wire mounting seats 73 and 83 may be installed so as to move in the opposite direction to the raising operation of the elevating unit 5 and the raising operation of the operation lever 46.
- the clutch lever 65 is disposed on the front side surface of the rear axle case 10, and is located above the bottom surface of the rear axle case 10 and toward the side of the rear axle case 10. Located at the front of the overhang. That is, the clutch lever 65 is disposed in a shadowed portion of the rear axle case 10 and is disposed in a place where it is difficult to cover mud and water and is difficult to malfunction due to mud pushing from below the fuselage.
- the first wire 70 is passed through a wire outer 71 disposed between the outer receivers 69 and 72, and the wire outer 71 together with the wire outer 81 of the second wire 80 is a rear axle case. 10 is drawn upward from the side of the wire through the wire outer receiver 69, is extended downward from the upper end of the mounting frame 17 along the mounting frame 17, and is connected to the outer receiver 72.
- the second wire 80 is passed through a wire outer 81 disposed between the outer receivers 69 and 82, and the wire outer 81 together with the wire outer 71 of the first wire 70 from the side of the rear axle case 10. It is drawn upward via the wire outer receiver 69, extended rearward along the top link 12 from the upper end of the mounting frame 17, and toward the rear end portion of the lower link 13 from the front and rear midway portion of the top link 12. It extends obliquely downward, is lifted upward from the planting center case 8 side toward the lever guide 47, and is connected to the outer receiver 82.
- a holding tool 84 for holding the wire outer 81 while restricting the movement range is attached to the middle part of the top link 12 before and after, and for holding the wire outer 81 while restricting the movement range of the lower link 13.
- the holder 85 is attached.
- the top link 12 and the lower link 13 move up and down in accordance with the raising and lowering of the planting portion 4. In this way, the wire outer 81 is guided by the two holders 84 and 85 and reaches the lever guide 47 from the rear axle case 10. The wire route is secured.
- the support link mechanism 40 is attached to the seedling stand frame 50 in a state where the leveling device 30 is supported by the support link mechanism 40. Then, the rear axle case 10 is provided with a leveling drive shaft 27 and a clutch mechanism 60 that serve as a power transmission path to the leveling device 30, and connects the leveling drive shaft 27 and the leveling transmission shaft 28. Further, in order to operate the clutch mechanism 60, wires 70 and 80 are connected to the clutch arm 65. Finally, the leveling device 30 can be attached to the rice transplanter 1 by connecting the wires 70 and 80 to the lower link 13 and the operation lever 46, respectively.
- the seedling stand frame 50 includes a planting frame 51 having a square pipe structure, a side frame 52 provided upward from both side ends of the planting frame 51, and upper and lower sides of the side frame 52.
- a rolling arm 53 passed to the middle part and a pin holder 54 passed to the upper end of the side frame 52 are provided.
- the planting frame 51 is provided with a number of planting cases according to the number of planting strips of the rice transplanter 1 facing backward.
- a planting center case 8 is disposed in the center of the planting frame 51, and power is branched and transmitted from the planting center case 8 to each planting case provided on both sides via a planting horizontal axis.
- the transmission shaft 51 is not provided in the planting frame 51, so that the function as a frame can be exhibited and sufficient rigidity can be ensured.
- a stay 57 to which a hitch base 56 that supports the lower portion of the hitch 14 is attached is provided in the center of the rolling arm 53.
- the lower end of the stay 57 and the planting frame 51 are connected by a hitch stand 56. That is, the rolling arm 53 is connected to the planting frame 51 by the stay 57 and the hitch base 56. Further, the hitch stand 56 is supported by the planting frame 51, and the planting center case 8 is also attached to the hitch stand 56.
- Brackets 58 to which the arm 45 of the support link mechanism 40 is fixed are provided on both sides of the rolling arm 53.
- a bracket 59 for fixing the lever guide 47 is provided on the rolling arm 53.
- the arm 45 is fixed to the bracket 58 and the lever guide 47 is fixed to the bracket 59, whereby the support link mechanism 40 and the leveling device 30 are supported by the seedling stage frame 50.
- the power from the rear axle case 10 to the leveling device 30 is taken out and branched, and the rear axle case 10 is provided with the clutch mechanism 60 that switches the presence or absence of power transmission to the leveling device 30.
- the present invention is not limited to the present configuration in which the power from the rear axle case 10 to which the power from the drive shaft 9 is transmitted to the leveling device 30 is branched, and may be branched from the PTO shaft 7, for example.
- the mechanism including the leveling device 30 and the support link mechanism 40 configured as described above can be attached to a rice transplanter that does not include the leveling device.
- a member necessary for taking out the power is a power take-off mechanism including the leveling drive shaft 27 and the clutch mechanism 60 provided in the rear axle case 10, and a member necessary for attaching is the outer receiver 69 of the rear axle case 10.
- the mounting structure includes an outer receiver 72 of the mounting frame 17, a wire mounting seat 73 of the lower link 13, a bracket 58 of the arm 45, and a bracket 59 of the lever guide 47.
- the mechanism by the leveling device 30 and the support link mechanism 40 can be easily introduced by providing these members at predetermined locations of the rice transplanter in advance or by providing them at predetermined locations at the time of attachment.
- the rear axle case 10 has a space for providing a power take-out mechanism
- the outer receiver 69 is fixed to the rear axle case 10 by welding or the like
- the outer receiver 72 is fixed to the mounting frame 17 by welding or the like.
- the wire attachment seat 73 is fixed to the lower link 13 by welding or the like
- the brackets 58 and 59 are fixed to the rolling arm 53 by welding or the like.
- a power take-out mechanism and a clutch mechanism 60 are installed in the rear axle case 10
- an outer receiver 69 is fixed to the rear axle case 10 by welding or the like
- an outer receiver 72 is mounted on the mounting frame 17.
- the brackets 58 and 59 are fixed to the rolling arm 53 by welding or the like.
- a mechanism including the leveling device 30 and the support link mechanism 40 is assembled in advance and can be attached as an integral unit, so that it can be easily applied to an existing seedling transplanter that does not include the leveling device. Can be introduced.
- the assembly accuracy of the leveling device 30 and the support link mechanism 40 can be guaranteed. It is possible to sufficiently exhibit the leveling performance of 30.
- operativity at the time of assembling the rice transplanter 1 can also be improved.
- a space for a power take-out mechanism and a clutch mechanism of the leveling device 30 is provided in the inner space of the rear axle case 10, and the side surface of the rear axle case 10 is provided.
- the drive shaft 32 includes a rotor input shaft 35 that protrudes laterally from both side surfaces of the transmission case 31, a rotor drive shaft 36 that is connected to the rotor input shaft 35 and extends on both sides, It is constituted by a joint 37 that connects the rotor input shaft 35 and the rotor drive shaft 36. Connection between the rotor input shaft 35 and the joint 37 of the rotor drive shaft 36 is realized by spline fitting. As described above, the spline coupling of the rotor input shaft 35 and the rotor drive shaft 36 via the joint 37 can improve the transmission efficiency in transmitting power from the rotor input shaft 35 to the rotor drive shaft 36. . Furthermore, since the contact area can be increased by the spline groove, wear between the rotor input shaft 35 and the rotor drive shaft 36 and the joint 37 can be prevented.
- a bevel gear 38 is provided at the end of the input shaft 34 that is interlocked with the leveling transmission shaft 28, and the bevel gear 39 that meshes with the bevel gear 38 is provided in the middle of the rotor input shaft 35. Fixed to the part. Power is transmitted to the rotor input shaft 35 via these bevel gears 38 and 39. As the rotor input shaft 35 rotates, the rotor drive shaft 36 is driven via the joint 37, and the leveling rotor 33 rotates.
- the transmission case 31 includes a main body 90 and a lid 92.
- the main body 90 has an opening through which the input shaft 34 penetrates, and rotatably supports the input shaft 34 on the inner periphery of the opening, and the openings 91 through which the drive shaft 32 (rotor input shaft 35) penetrates both sides.
- the lid 92 rotatably supports the drive shaft 32 (rotor input shaft 35) and closes the opening 91 of the main body 90.
- the main body 90 is formed as an integral box-shaped member having an opening through which the input shaft 34 penetrates and an opening 91 through which the drive shaft 32 penetrates, and a housing portion 90a for housing the bevel gears 38 and 39 therein, and an input It is formed as a cylindrical member having an opening through which the shaft 34 passes, and includes a cylindrical portion 90b extending forward (rear axle case 10 side) from the accommodating portion 90a.
- the main body 90 is integrally formed so as to include the accommodating portion 90a and the cylindrical portion 90b.
- the oil seal 100 that seals the inside of the transmission case 31 and the bearings 101 and 101 that rotatably support the input shaft 34 are sequentially arranged on the inner peripheral surface of the cylindrical portion 90b from the opening side.
- the lid 92 seals the internal space of the main body 90 by closing the openings 91 provided on both side surfaces of the main body 90.
- An O-ring 92 is provided between the outer surface of the lid 92 and the inner surface of the main body 90.
- a through portion through which the rotor input shaft 35 penetrates is provided at the center of the lid 92, and a boss portion 93 projecting sideways from both side surfaces of the lid 92 is integrally provided along the through portion. .
- An oil seal 103 for sealing the inside of the transmission case 31 and a bearing 104 for rotatably supporting the rotor input shaft 35 are disposed in order from the opening side on the inner peripheral surface of the boss portion 93, and the oil seal 103 is A retaining ring 105 for fixing is provided.
- the rigidity of the integrally molded main body 90 can be increased.
- the main body 90 By configuring the transmission case 31 with the main body 90 and the lid 92 that closes the opening 91 of the main body 90, the rigidity of the integrally molded main body 90 can be increased.
- torque when a torque fluctuation occurs in the input shaft 34 supported by the main body 90 via the bearing 101 is not applied to the main body 90.
- Deformation of the main body 90 can be prevented. That is, it is possible to reduce as much as possible the influence on the main body 90 due to the backlash caused by the input shaft 34 accompanied by torque fluctuation or the backlash caused by the unbalance of the shaft provided in the transmission path. Therefore, it is possible to prevent the sealing performance of the transmission case 31 from being impaired due to the deformation of the main body 90.
- the main body 90 by integrally molding the main body 90, it is not necessary to assemble the main body 90 when assembling the transmission case 31, and the assembly position within the main body 90 is determined at the time of molding. The positioning accuracy of each component when assembling the transmission case 31 by assembling the components can be increased.
- the lid 92 has a seamless and highly rigid structure, and holds a bearing 104 for supporting the drive shaft 32 (rotor input shaft 35), and a boss portion 93 that protrudes to the side of the main body 90.
- a bearing 104 for supporting the drive shaft 32 (rotor input shaft 35)
- a boss portion 93 that protrudes to the side of the main body 90.
- the end portion of the joint 37 on the transmission case 31 side covers the outer end portion of the boss portion 93 and extends from the outer end portion of the boss portion 93 toward the inner side of the transmission case 31. It is provided to do.
- the inner end portion of the joint 37 is provided with an enlarged diameter portion 37 a that is larger than the outer diameter of the rotor input shaft 35, and the outer peripheral portion of the enlarged diameter portion 37 a is the protruding end portion of the boss portion 93. Has been extended to overlap.
- the path to the oil seal 103 is formed in a labyrinth shape by placing the open portion of the enlarged diameter portion 37a of the joint 37 on the boss portion 93 of the transmission case 31.
- Dust and other foreign matter wound up by the rotation of the leveling rotor 33 and entering between the transmission case 31 and the leveling rotor 33 accumulate in the vicinity of the leveling rotor 33 and then proceed from the leveling rotor 33 side toward the transmission case 31 side. .
- the path entering the inside from the open part of the inner end of the joint 37 and heading toward the opening of the boss part 93 is opposite to the traveling direction of the foreign substance (the direction from the outside of the transmission case 31 to the inside).
- hub part 93 turns into the reverse direction further.
- the path reaching the oil seal 103 of the transmission case 31 has a labyrinth structure that is opposite to the traveling direction of the foreign matter.
- a part of the joint 37 that connects the rotor input shaft 35 and the rotor drive shaft 36 is the enlarged diameter portion 37a, and the enlarged diameter portion 37a is provided so as to cover the boss portion 93 of the transmission case 31. It is possible to effectively prevent foreign matter from entering the oil seal 103 of the transmission case 31.
- the path of the contaminants is physically blocked by the enlarged diameter portion 37a of the joint 37, the amount of contaminants reaching the inner end of the joint 37 can be reduced.
- the foreign matter advances along the outer periphery of the joint 37 arranged as a rotating body, and when the foreign matter exceeds the diameter-expanded portion 37a, the centrifugal force of rotation acts in the direction in which the foreign matter separates from the joint 37. By doing so, it is also possible to expect the effect of shaking off the impurities from the joint 37.
- the transmission case 31 is fixed to the drive shaft 32 so as not to rotate. That is, the drive shaft 32 rotates relative to the boss portion 93 of the transmission case 31 that is fixed so as not to rotate. Thereby, the sliding part 106 is formed between the inner peripheral surface of the joint 37 and the outer peripheral surface of the boss part 93.
- an oil hole 107 is formed on the upper surface of the main body 90 of the transmission case 31, and a nipple 108 for closing the oil hole 107 is attached.
- the transmission case 31 is filled with lubricating oil. Thereby, by confirming that the lubricating oil has leaked from the transmission case 31, it is possible to confirm damage to the lips of the oil seals 100 and 103 of the transmission case 31. By detecting and treating the breakage of the oil seals 100 and 103 at an early stage, it is possible to prevent damage to the bearings 101 and 104, the bevel gears 38 and 39, and the like disposed on the inside thereof.
- a drain (not shown) for taking out the internal lubricating oil is provided at the lower rear portion of the main body 90, and the internal lubricating oil can be easily discharged and replaced.
- the transmission case 31 may be filled with grease instead of the lubricating oil.
- the protective member 120 is fixed to the outer periphery of the cylindrical portion 90b of the main body 90.
- the protection member 120 protects the periphery of the connecting portion between the input shaft 34 and the leveling transmission shaft 28, and covers the leveling transmission shaft 28 connected to the input shaft 34 and a universal joint provided therebetween.
- the protective member 120 is a bellows-shaped protective boot, and is fixed by using a clip 121 around a cylindrical portion 90 b extending toward the front of the main body 90. Since the cylindrical portion 90b extends forward from the front surface of the housing portion 90a formed in a box shape, the length of the cylindrical portion 90b can be used as it is as the fixing portion of the clip 121, and is protected. The fixed length of the member 120 can be increased. Thereby, the protective member 120 can be attached more firmly, and it can prevent that it falls out and a clearance gap is vacant. Therefore, mud and impurities do not enter the transmission case 31 from the protective member 120 side, and the occurrence of problems due to such intruders can be prevented.
- FIG. 13 shows another embodiment of the protective structure provided in the opening of the transmission case 31 (boss portion 93).
- the joint 37 is not provided with the enlarged diameter portion 37 a, but is provided with an extension portion 130 that extends the open end portion of the boss portion 93 radially outward, and the outer periphery of the rotor input shaft 35.
- a plate 131 is provided on the plate.
- the plate member 131 is a disk-shaped member that is fixed to the outer periphery of the rotor input shaft 35, and is disposed so as to face the extended portion 130 of the boss portion 93. In this way, the foreign material traveling from the leveling rotor 33 side is blocked by the plate material 131, and the opening of the boss portion 93 is provided by providing a path intruding between the plate material 131 and the extending portion 130 in the radial direction.
- the plate member 131 rotates relative to the extending portion 130 of the boss portion 93 by rotating with the rotation of the rotor input shaft 35.
- the foreign matter that has entered between the plate member 131 and the extended portion 130 of the boss portion 93 can be ground.
- a side case 110 formed in a cylindrical shape is provided on the support portion of the drive shaft 32 in the support arm 43.
- the side case 110 houses a bearing 111 that rotatably supports the drive shaft 32 and an oil seal 112 that is disposed on both sides of the bearing 111.
- a collar 113 having an opening corresponding to the cross-sectional shape of the drive shaft 32 and having a circular outer peripheral surface is fixed to the drive shaft 32, and a bearing 111 and an oil seal are provided on the outer peripheral surface of the collar 113. 112 is fixed.
- Protective members 114 formed in a plate-like disk shape are provided at both side ends of the collar 113.
- the protection member 114 is provided in contact with the outer end of the collar 113.
- the protection member 114 is fixed to the drive shaft 32 and is configured to be rotatable with the rotation of the drive shaft 32.
- Both side ends of the side case 110 extend outward from both side ends of the collar 113.
- the protection member 114 extends from the outer end of the collar 113 to the outside of the outer end of the side case 110, extends radially outward from the side case 110, and further extends toward the inside of the side case 110. Is issued.
- the protection member 114 is provided so as to be recessed toward the inner side of the side case 110 along the axial direction of the drive shaft 32, and extends from the recessed central portion 114a toward the outer side in the axial direction.
- an outer peripheral portion 114b formed by being bent into a crank shape so as to cover the outer end of the side case 110.
- the path to the oil seal 112 is formed in a labyrinth shape.
- Dust and other foreign matter wound up by the rotation of the leveling rotor 33 and entering between the side case 110 and the leveling rotor 33 accumulate in the vicinity of the leveling rotor 33, and then proceed from the leveling rotor 33 side toward the side case 110 side. .
- the path from the opening at the inner end of the protective member 114 to the inside and toward the opening of the side case 110 is opposite to the traveling direction of the foreign matter (the direction from the outside of the side case 110 to the inside). .
- invasion direction which goes to the oil seal 112 from the outer side edge part of the side case 110 turns into the reverse direction further.
- the labyrinth structure is configured such that the path reaching the oil seal 112 of the side case 110 is opposite to the traveling direction of the foreign matter.
- the foreign matter needs to go from the leveling rotor 33 along the drive shaft 32 toward the central portion 114b of the protection member 114, and when the foreign matter reaches the outer peripheral portion 114b from the central portion 114a, the dent of the central portion 114a must be exceeded There is.
- the protection member 114 having a concave shape at the center can provide resistance to the progress of the foreign matter.
- the protection members 114 As described above, by providing the protection members 114 so as to cover the openings at both ends of the side case 110 from the outside, it is possible to effectively prevent foreign substances from entering the oil seal 112 of the side case 110. And the protection member 114 can be rotated with respect to the side case 110 by fixing to the drive shaft 32 (rotor drive shaft 36). Thereby, the foreign substance which entered between the inner peripheral surface of the protective member 114 and the outer peripheral surface of the side case 110 from the open part of the protective member 114 can be finely crushed.
- a grease hole 116 and a grease nipple 117 that closes the grease hole 116 are provided on the upper surface of the side case 110.
- the internal space surrounded by the oil seal 112 in the side case 110 is filled with grease.
- a donut-shaped retaining ring 115 is provided outside the oil seal 112.
- the retaining ring 115 is fixed to the inner peripheral surface of the side case 110 and positions the oil seal 112.
- the retaining ring 115 can provide an additional labyrinth structure in the side case 110.
- the present invention can be used for a seedling transplanter equipped with a leveling device for headland leveling.
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transplanting Machines (AREA)
- Soil Working Implements (AREA)
Abstract
Description
図3に示すように、整地装置30は、整地伝動軸28の入力を受ける伝動ケース31の両側方に突出して設けられる駆動軸32と、駆動軸32に固定される複数の整地ロータ33とを備える。整地装置30は、支持リンク機構40を介して、植付部4の苗載台フレーム50に取り付けられる。支持リンク機構40は、整地装置30を植付部4に対して昇降(回動)可能に支持する。つまり、整地装置30(伝動ケース31、駆動軸32及び整地ロータ33)は、支持リンク機構40の昇降に応じて植付部4に対する高さを変更可能である。 [Support structure of leveling device]
As shown in FIG. 3, the
図2、図4から図8を参照して、整地装置30のクラッチ構造について説明する。 [Clutch structure of leveling device]
The clutch structure of the leveling
図8に示すように、第一ワイヤ70は、アウタ受け69・72間に配置されるワイヤアウタ71の内部に通されており、そのワイヤアウタ71は、第二ワイヤ80のワイヤアウタ81と共に、リアアクスルケース10の側方からワイヤアウタ受け69を介して上方に引き出され、取付フレーム17の上端から取付フレーム17に沿わせた状態で下方に向けて延出され、アウタ受け72に接続されている。 [Wire management]
As shown in FIG. 8, the
整地装置30を田植機1に取り付ける場合は、まず、整地装置30を支持リンク機構40で支持した状態で、支持リンク機構40を苗載台フレーム50に取り付ける。そして、リアアクスルケース10に整地装置30への動力伝達経路となる整地駆動軸27及びクラッチ機構60を設け、整地駆動軸27と整地伝動軸28とを連結する。さらに、クラッチ機構60を作動させるために、クラッチアーム65にワイヤ70・80を接続する。最後に、ワイヤ70・80をそれぞれロアリンク13及び操作レバー46に接続することで、整地装置30を田植機1に取り付けることができる。 [Installation of leveling device]
When attaching the leveling
図9に示すように、苗載台フレーム50は、角パイプ構造を有する植付フレーム51と、植付フレーム51の両側端部から上方に向けて設けられるサイドフレーム52と、サイドフレーム52の上下中途部に渡されるローリングアーム53と、サイドフレーム52の上端に渡されるピンホルダ54と、を備える。 [Seedling stand frame]
As shown in FIG. 9, the
図4及び図10に示すように、リアアクスルケース10内には、整地装置30への動力を取り出す機構として、整地伝動軸28に接続される整地駆動軸27、及び、整地装置30への動力を断接するクラッチ機構60、並びに、整地駆動軸27を支持するベアリング、リアアクスルケース10を密閉するオイルシール、止め輪等が配置される。 [Rear axle case]
As shown in FIGS. 4 and 10, in the
以上のように構成される整地装置30と支持リンク機構40とを含む仕組みは、整地装置を備えていない田植機に取り付けることが可能である。 [Unitization of leveling device]
The mechanism including the leveling
図3及び図11に示すように、整地装置30では、駆動軸9からの動力の一部がリアアクスルケース10を介して整地伝動軸28に分岐され、整地伝動軸28にユニバーサルジョイント等を介して連動連結される入力軸34、及び、入力軸34の入力を受ける伝動ケース31を介して、伝動ケース31の両側面から側方に向けて延出される駆動軸32に伝達される。駆動軸32に複数の整地ロータ33が固定される。駆動軸32は断面視四角形状に形成されており、整地ロータ33の中心の四角形状の開口と係合することで、整地ロータ33が駆動軸32に対して相対回転不能に固定されている。 [Transmission case]
As shown in FIGS. 3 and 11, in the leveling
そして、保護部材114は、駆動軸32(ロータ駆動軸36)に固定されることで、保護部材114をサイドケース110に対して回転させることができる。これにより、保護部材114の開放部から、保護部材114の内周面とサイドケース110の外周面との間に侵入した夾雑物を細かく砕くことができる。 As described above, by providing the
And the
Claims (3)
- 植付部の前方に枕地整地用の整地装置を備え、
前記整地装置を駆動する動力は、エンジンからリアアクスルケースを介して伝達されるとともに、該リアアクスルケースに、前記整地装置へ動力を伝達又は遮断するクラッチ機構を備え、
前記クラッチ機構は、前記植付部の上昇に伴って移動する部材と接続される第一連結具を含み、前記植付部の上昇に伴って該第一連結具が操作されることで、前記クラッチ機構を切断することを特徴とする苗移植機。 It is equipped with a leveling device for headland leveling in front of the planting part,
The power for driving the leveling device is transmitted from the engine through a rear axle case, and the rear axle case is provided with a clutch mechanism for transmitting or blocking power to the leveling device,
The clutch mechanism includes a first connector that is connected to a member that moves as the planting part moves up, and the first connector is operated as the planting part moves up, A seedling transplanting machine characterized by cutting the clutch mechanism. - 前記クラッチ機構は、前記整地装置を上昇させて収納する操作に伴って移動する部材と接続される第二連結具を含み、前記整地装置を上昇させて収納する操作に伴って該第二連結具が操作されることで、前記クラッチ機構を切断する請求項1に記載の苗移植機。 The clutch mechanism includes a second connector that is connected to a member that moves in accordance with an operation of raising and storing the leveling device, and the second connector is configured to operate when the leveling device is raised and stored. The seedling transplanting machine according to claim 1, wherein the clutch mechanism is disconnected by being operated.
- 前記クラッチ機構は、前記第一連結具及び第二連結具と接続され、その操作によって該クラッチ機構を切断するクラッチレバーを備え、該クラッチレバーは、前記リアアクスルケースの底面よりも上部、かつ、リアアクスルケースの側方への張り出しの前部に配置される請求項2に記載の苗移植機。 The clutch mechanism includes a clutch lever that is connected to the first connector and the second connector and disconnects the clutch mechanism by an operation thereof, the clutch lever being above the bottom surface of the rear axle case, and The seedling transplanting machine according to claim 2, wherein the seedling transplanting machine is arranged at a front portion of the rear axle case projecting laterally.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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KR1020167029491A KR20160135822A (en) | 2014-03-24 | 2015-03-23 | Seedling transplanter |
CN201580015658.2A CN106163257A (en) | 2014-03-24 | 2015-03-23 | Seeding transplant machine |
PH12016501799A PH12016501799A1 (en) | 2014-03-24 | 2016-09-15 | Seedling transplanter |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2014-060977 | 2014-03-24 | ||
JP2014-060976 | 2014-03-24 | ||
JP2014060976A JP2015181403A (en) | 2014-03-24 | 2014-03-24 | seedling transplanting machine |
JP2014060977A JP2015181404A (en) | 2014-03-24 | 2014-03-24 | Seedling transplanting machine and leveling device |
Publications (1)
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WO2015146911A1 true WO2015146911A1 (en) | 2015-10-01 |
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ID=54195424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2015/058736 WO2015146911A1 (en) | 2014-03-24 | 2015-03-23 | Seedling transplanter |
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KR (1) | KR20160135822A (en) |
CN (1) | CN106163257A (en) |
PH (1) | PH12016501799A1 (en) |
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CN111114630A (en) * | 2020-01-14 | 2020-05-08 | 河北农业大学 | Front axle driving steering component suitable for working seeder in various soil states |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007014261A (en) * | 2005-07-07 | 2007-01-25 | Mitsubishi Agricult Mach Co Ltd | Agricultural implement |
WO2007108298A1 (en) * | 2006-03-20 | 2007-09-27 | Yanmar Co., Ltd. | Rice planting machine |
JP2008067633A (en) * | 2006-09-13 | 2008-03-27 | Mitsubishi Agricult Mach Co Ltd | Farm implement |
JP2009039028A (en) * | 2007-08-08 | 2009-02-26 | Mitsubishi Agricult Mach Co Ltd | Transplanter |
JP2009183174A (en) * | 2008-02-04 | 2009-08-20 | Yanmar Co Ltd | Rice transplanter |
WO2010106852A1 (en) * | 2009-03-16 | 2010-09-23 | ヤンマー株式会社 | Rice planting machine |
JP2012050342A (en) * | 2010-08-31 | 2012-03-15 | Iseki & Co Ltd | Seedling transplanter |
-
2015
- 2015-03-23 CN CN201580015658.2A patent/CN106163257A/en active Pending
- 2015-03-23 WO PCT/JP2015/058736 patent/WO2015146911A1/en active Application Filing
- 2015-03-23 KR KR1020167029491A patent/KR20160135822A/en not_active Application Discontinuation
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2016
- 2016-09-15 PH PH12016501799A patent/PH12016501799A1/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007014261A (en) * | 2005-07-07 | 2007-01-25 | Mitsubishi Agricult Mach Co Ltd | Agricultural implement |
WO2007108298A1 (en) * | 2006-03-20 | 2007-09-27 | Yanmar Co., Ltd. | Rice planting machine |
JP2008067633A (en) * | 2006-09-13 | 2008-03-27 | Mitsubishi Agricult Mach Co Ltd | Farm implement |
JP2009039028A (en) * | 2007-08-08 | 2009-02-26 | Mitsubishi Agricult Mach Co Ltd | Transplanter |
JP2009183174A (en) * | 2008-02-04 | 2009-08-20 | Yanmar Co Ltd | Rice transplanter |
WO2010106852A1 (en) * | 2009-03-16 | 2010-09-23 | ヤンマー株式会社 | Rice planting machine |
JP2012050342A (en) * | 2010-08-31 | 2012-03-15 | Iseki & Co Ltd | Seedling transplanter |
Also Published As
Publication number | Publication date |
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KR20160135822A (en) | 2016-11-28 |
PH12016501799A1 (en) | 2016-11-21 |
CN106163257A (en) | 2016-11-23 |
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