JP2013202022A - Seedling horizontal feeding apparatus of rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a seedling stand horizontal feeding shaft in a favorable lubricating state over a long period of time in the simple structure.SOLUTION: A contact avoiding means 71 for avoiding a contact between an expandable and contractible cover cylinder 62 and a horizontal feeding spiral groove 65 due to deformation of the expandable and contractible cover cylinder 62 covering the seedling stand horizontal feeding shaft 60 is disposed inside a pair of right and left expandable and contractible cover cylinders 62, 62. The paired right and left expandable and contractible cover cylinders 62, 62 are configured to form a lubricating oil storing chamber 72 in the interior.

Description

  The present invention includes a seedling platform lateral feed shaft that is rotationally driven with a lateral feed spiral groove on a peripheral surface, and is fitted on the seedling platform lateral feed shaft and engaged with the lateral feed spiral groove. A transfer body that is reciprocally transferred by a platform horizontal feed shaft to perform a lateral feed operation of the seedling platform, and is mounted across the transfer body and support portions located at both ends of the seedling platform horizontal feed shaft. The present invention relates to a seedling horizontal feed device of a rice transplanter provided with a pair of left and right telescopic cover cylinders covering a feed shaft.

  Conventionally, as shown, for example, in Patent Document 1, a cylindrical member that surrounds a lateral feed drive shaft is transferred by the action of a spiral groove provided in the lateral feed drive shaft to laterally feed a seedling platform, There has been a cross feed device for a rice transplanter configured to attach an oil supply cup to a member, or to provide a lubricating oil reservoir inside a cylindrical member and supply the lubricating oil from the oil supply cup or the reservoir to a spiral groove.

JP 2000-270631 A

  When the conventional technology is applied to supply the lubricant oil to the seedling table horizontal feed shaft, it is not possible to store much lubricant, and lubrication failure due to oil shortage or deterioration of the lubricant occurs relatively early. Tended to be. Alternatively, there has been an inconvenience that the lubricating oil must be replenished relatively frequently so as to avoid the occurrence of poor lubrication.

  An object of the present invention is to provide a seedling cross-feeding device for a rice transplanter that can easily maintain a good lubrication state of a seed-feeding table cross-feed shaft over a long period of time.

The first aspect of the present invention is a seedling platform lateral feed shaft that is rotationally driven with a lateral feed spiral groove on the peripheral surface, and is externally fitted to the seedling platform lateral feed shaft and engaged with the lateral feed spiral groove, A transfer body that is reciprocally transferred by the seedling table horizontal feed shaft to perform a lateral feed operation of the seedling table, and is attached to the transfer body and support portions that are positioned at both ends of the seedling table horizontal feed shaft. In the seedling horizontal feed device of the rice transplanter equipped with a pair of left and right extendable cover cylinders covering the table horizontal feed shaft,
Contact avoiding means for avoiding contact between the extension cover cylinder and the lateral feed spiral groove by deformation of the extension cover cylinder is disposed inside the pair of left and right extension cover cylinders,
The pair of left and right telescopic cover cylinders are configured to form a lubricating oil storage chamber therein.

  When the telescopic cover tube is shortened by the movement of the transfer body, the telescopic cover tube may be deformed. When the telescopic cover tube is deformed, depending on the size of the deformation, the telescopic cover tube comes into contact with the lateral feed spiral groove, and the lateral feed spiral groove rotates to rotate the seedling table lateral feed shaft. The cover tube is easily damaged.

  According to the configuration of the first aspect of the invention, the expansion cover cylinder is provided with an oil bath function. However, the contact avoidance means can prevent the expansion cover cylinder from coming into contact with the transverse feed spiral groove and being damaged. Therefore, it is possible to prevent oil leakage from being caused by damage to the expansion / contraction cover cylinder. And a large amount of lubricating oil can be stored.

  Therefore, according to the first aspect of the present invention, a large amount of lubricating oil is stored in the telescopic cover cylinder to supply lubricating oil to the seedling table lateral feed shaft, and deterioration or shortage of the lubricating oil is caused over a long period of time. It can be supplied in a state where it does not occur, and smooth seedling feeding can be performed for a long time with a small amount of refueling. In addition, the expansion / contraction cover tube can be provided with an oil bath function at low cost.

  According to the second aspect of the present invention, a lateral feed shaft cover that extends from the transfer body to the inside of the pair of left and right telescopic cover cylinders to cover the lateral feed spiral groove is provided, and the deformed telescopic cover cylinder is moved by the lateral feed shaft cover. It is configured so as to avoid contact between the telescopic cover cylinder and the lateral feed spiral groove.

  According to the configuration of the second aspect of the invention, the transverse feed shaft cover moves with respect to the seedling table transverse feed shaft together with the transfer body, so that a compact transverse feed shaft cover with a relatively short extension length from the transfer body can be obtained. Even if it is adopted, the transverse feed spiral groove can be effectively covered by the transverse feed shaft cover at the timing when the transfer body is located at a moving position where deformation of the telescopic cover cylinder is likely to occur. The cover can avoid damage to the telescopic cover cylinder.

  Therefore, according to the second aspect of the present invention, it is possible to easily obtain a structure in which the expansion cover cylinder is provided with an oil bath function and the lubricant oil can be advantageously supplied to the seedling table lateral feed shaft.

  In the third aspect of the invention, the extending end of the transverse feed shaft cover is located at the same or substantially the same location as the end of the transverse feed spiral groove in a state where the transfer body is located at the center location of the movement range. A transverse feed shaft cover is provided.

  According to the configuration of the third aspect of the invention, the extendable cover is provided by the compact transverse feed shaft cover in which the extension end is located at the same or substantially the same end as the end of the transverse feed spiral groove in a state where the transfer body is located at the center of the moving range. It is possible to avoid damage to the tube.

  Therefore, according to the third aspect of the invention, it is possible to easily obtain a structure in which the expansion cover cylinder is provided with an oil bath function and the lubricating oil can be advantageously supplied to the seedling table lateral feed shaft.

  The fourth invention is characterized in that the seedling platform lateral feed shaft is provided with a feed shaft portion having the lateral feed spiral groove, and a length that is substantially half or more than half of the moving distance of the transfer body on both sides of the feed shaft portion. And a receiving shaft portion that is positioned in a position, and the deformed expansion / contraction cover tube is received by the receiving shaft portion so as to avoid contact between the expansion / contraction cover tube and the lateral feed spiral groove. It is configured.

  According to the configuration of the fourth aspect of the present invention, the feed shaft portion and the receiving shaft portion which is provided on both sides of the feed shaft portion and has a length approximately half or more than the moving range of the transfer body are provided. It is possible to avoid damage to the expansion / contraction cover cylinder by a simple structure that simply constitutes the platform lateral feed shaft.

  Therefore, according to the fourth aspect of the present invention, it is possible to easily obtain a structure in which the expansion cover cylinder is provided with an oil bath function and the lubricating oil can be advantageously supplied to the seedling table lateral feed shaft.

  In the fifth aspect of the present invention, the seedling platform lateral feed shaft is positioned with a feed shaft portion having the lateral feed spiral groove and an outer diameter larger than the feed shaft portion on both sides of the feed shaft portion. A large-diameter shaft portion is provided, and the deformed expansion / contraction cover tube is received by the large-diameter shaft portion so as to avoid contact between the expansion / contraction cover tube and the lateral feed spiral groove.

  According to the configuration of the fifth aspect of the present invention, the seedling table horizontal feed shaft is configured by including the feed shaft portion and the receiving shaft portion having an outer diameter larger than the feed shaft portion and positioned on both sides of the feed shaft portion. It is possible to avoid damage to the telescopic cover cylinder with a simple structure.

  Therefore, according to the fifth aspect of the present invention, it is possible to easily obtain a structure in which the expansion cover cylinder is provided with an oil bath function and the lubricating oil can be advantageously supplied to the seedling table lateral feed shaft.

  In the sixth aspect of the invention, the deformed expansion / contraction is provided by providing a receiving rod extending in a direction along the seedling table horizontal feed shaft at a position above the seedling table horizontal feed shaft inside the pair of left and right extension cover cylinders. The cover cylinder is received by the receiving rod and is configured to avoid contact between the telescopic cover cylinder and the lateral feed spiral groove.

  According to the configuration of the sixth aspect of the present invention, by a simple structure in which a receiving rod is installed in a direction along the seedling table horizontal feed shaft at a position above the seedling table horizontal feed shaft inside the pair of left and right extension cover cylinders. It is possible to avoid damage to the expansion cover cylinder.

  Therefore, according to the sixth aspect of the invention, it is possible to easily obtain a structure in which the expansion cover cylinder is provided with an oil bath function and the lubricating oil can be advantageously supplied to the seedling table lateral feed shaft.

  According to the seventh aspect of the present invention, the transfer body is provided with an oil filling port communicating with the lubricating oil storage chamber inside the pair of left and right extension cover cylinders.

  According to the configuration of the seventh aspect of the present invention, when the lubricating oil is supplied from the oil filling port of the transfer body, the supplied lubricating oil is dispersed and flows toward the pair of left and right lubricating oil storage chambers.

  Therefore, according to the seventh aspect of the present invention, the lubricating oil is supplied to the lubricating oil storage chambers of the pair of left and right expansion / contraction cover cylinders without the need to individually add oil to the pair of left and right lubricating oil storage chambers. It can be supplied smoothly to the pair of left and right lubricating oil storage chambers simply by lubricating.

  According to the eighth aspect of the present invention, the transfer body is provided with a communication passage that allows the lubricating oil storage chamber inside the pair of left and right extension cover cylinders to communicate with each other.

  If the transfer body moves, the volume of one lubricating oil storage chamber of the pair of left and right telescopic cover cylinders increases and the volume of the other lubricating oil storage chamber decreases, but according to the configuration of the eighth invention Then, the lubricating oil in the reduced-volume lubricating oil storage chamber moves through the communication path to the increased-volume lubricating oil storage chamber, and the transfer resistance received by the transfer body by the reduced-volume lubricating oil storage chamber is reduced. Can be suppressed.

  Therefore, according to the eighth aspect of the invention, the lubricating oil is stored in the pair of left and right telescopic cover cylinders, but the lubricating oil is less likely to become a moving resistance of the transfer body, so that the horizontal transfer of the seedling platform is performed smoothly. Can be made.

  In the ninth aspect of the invention, the communication path is arranged at a lower arrangement height than the axis of the seedling table lateral feed shaft.

  According to the configuration of the ninth aspect of the present invention, the communication path is located at an arrangement height lower than the oil surface height of the lubricating oil stored in the lubricating oil storage chamber of the pair of left and right extension cover cylinders, and the lubricating oil storage on the volume reducing side is stored. Lubricating oil can be smoothly moved from the chamber to the lubricating oil storage chamber on the volume increasing side.

  Therefore, according to the ninth aspect of the present invention, the lubricating oil is stored inside the pair of left and right expansion / contraction cover cylinders, but the lubricating oil is not easily caused by the movement resistance of the transfer body, and the horizontal transfer of the seedling platform is performed smoothly. Can be made.

It is a side view which shows a seedling planting apparatus. It is a top view which shows a seedling planting apparatus. It is a side view which shows a planting drive case and a seedling planting mechanism. It is a cross-sectional top view of a feed case. It is a vertical side view of a feed case. It is a cross-sectional top view which shows a planting drive case and a seedling planting mechanism. It is a side view which shows a seedling horizontal feed apparatus. It is sectional drawing which shows the seedling horizontal feed apparatus in the state in which the transfer body was located in the center location of the movement range. It is sectional drawing which shows the seedling horizontal feed apparatus in the state in which the transfer body was located between the center location and one end location of a movement range. It is sectional drawing which shows the seedling horizontal feed apparatus in the state in which the transfer body was located in the one end location of the movement range. It is a top view which shows a transfer body. FIG. 12 is a cross-sectional view taken along the line XII-XII in FIG. 11. It is a XIII-XIII cross-sectional arrow view of FIG. It is sectional drawing which shows the connection structure of a horizontal feed output shaft and a seedling stand horizontal feed shaft. It is sectional drawing which shows the seedling horizontal feed apparatus provided with 1st another embodiment. It is sectional drawing which shows the seedling horizontal feed apparatus provided with 2nd another embodiment. It is sectional drawing which shows the seedling horizontal feed apparatus provided with 3rd another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing a seedling planting apparatus 1 of a rice transplanter according to an embodiment of the present invention. FIG. 2 is a plan view showing the seedling planting apparatus 1 according to the embodiment of the present invention. As shown in FIGS. 1 and 2, a rice transplanter seedling planting apparatus 1 according to an embodiment of the present invention constitutes a riding type rice transplanter, and moves backward and upward from a riding type self-propelled body (not shown). A body frame 2 having a front end connected to a support member 5 positioned at the rear of the link mechanism 4 extending so as to be swingable, and eight seedlings that are provided in the rear of the body frame 2 so as to be driven in the lateral direction of the body. Mechanism 6, one seedling platform 7 provided in an inclined position located on the rear side of the machine body at the lower end above the front part of the machine frame 2, and five grounding floats arranged side by side in the machine body below the machine frame 2 8 is provided.

  The seedling planting device 1 is moved into a descending working state in which each grounding float 8 comes into contact with the farm scene and an ascending non-working state in which each grounding float 8 rises high from the farm scene by the vertical swing operation of the link mechanism 4 with respect to the traveling machine body. By being lifted and lowered and pulled by the self-propelled aircraft in the descending state, the ground scene is leveled by the grounding float 8, and eight seedlings are planted by the eight seedling planting mechanisms 6 on the leveled field scene.

  The seedling planting device 1 is supported by a support member 5 so as to be swingable around a rolling axis center in the longitudinal direction of the aircraft, so that the right and left seedling planting depths are the same or substantially the same regardless of the right and left inclination of the self-propelled aircraft. Planting seedlings while rolling against the self-propelled aircraft.

The body frame 2 will be described.
As shown in FIGS. 1, 2, and 3, the fuselage frame 2 has a mainframe 10 that is located at the front end of the fuselage frame 2 and is long in the lateral direction of the fuselage. An extending planting drive case 11 and a feed case 12 connected to an intermediate portion of the main frame 10 in the lateral direction of the machine body are provided. The main frame 10 is configured by a hollow member having a rectangular longitudinal cross-sectional shape.

  FIG. 4 is a cross-sectional plan view of the feed case 12. FIG. 5 is a vertical side view of the feed case 12. As shown in FIGS. 1, 4, and 5, the feed case 12 includes an input shaft 13, and a feed case main body 12 a that houses the speed change mechanism 14. An output case portion 12b extending is provided. On the wall surface 12c facing forward of the fuselage of the feed case body 12a, there are a connecting shaft 15 projecting forward of the fuselage, a lubricating oil supply port 16 located at the same or substantially the same height as the input shaft 13, and a lubricating oil supply port 16. A plug 17 that opens and closes is provided. The connecting shaft 15 is connected to the support member 5 so as to be rotatable around the rolling axis, and enables the seedling planting apparatus 1 to roll. A pedestal portion 12d connected to the main frame 10 is provided at the bottom of the feed case body 12a.

The seedling planting mechanism 6 will be described.
FIG. 3 is a side view showing the planting drive case 11 and the seedling planting mechanism 6. FIG. 6 is a cross-sectional plan view showing the planting drive case 11 and the seedling planting mechanism 6. As shown in FIGS. 2, 3, and 6, the eight seedling planting mechanisms 6 are arranged in the lateral direction of the machine body in an arrangement that is positioned one by one on both lateral sides of the rear end portion of each planting drive case 11. A pair of seedling planting mechanisms 6 and 6 positioned separately on both lateral sides of each planting drive case 11 are attached to a single planting drive shaft 20 penetrating in the lateral direction of the machine body at the rear end of the planting drive case 11. It is supported by the planting drive case 11 via the planting drive shaft 20 so as to be freely driven.

  Each seedling planting mechanism 6 includes a rotary rotor 6a that is rotatably supported by a portion of the planting drive shaft 20 that protrudes outside the planting drive case 11, and both ends of the rotary rotor 6a via rotary drive shafts 6b. It is provided with the planting arm 6c supported so that it can drive freely. In other words, each seedling planting mechanism 6 is driven by the gear mechanism 6e located inside the rotary rotor 6a by the rotary rotor 6a being rotationally driven by the planting drive shaft 20. The arms 6c and 6c are driven to rotate around the axis of the rotational drive shaft 6b while revolving around the axis of the planting drive shaft 20.

  Accordingly, in each seedling planting mechanism 6, when the planting drive shaft 20 is driven, the planting claw 6d provided on one planting arm 6c and the planting claw 6d provided on the other planting arm 6c are combined with each other. While drawing a turning trajectory T (see FIG. 3) as a seedling planting movement trajectory at the tip, it alternately moves up and down between the seedling take-out port 21 located on the lower end side of the seedling mount 7 and the field scene. To plant seedlings. Accordingly, each seedling planting mechanism 6 alternately takes out one seedling from the mat-like seedling of the seedling placing stand 7 at the seedling takeout port 21 by the pair of planting claws 6d, 6d, and the taken out seedling is taken out as the seedling takeout port 21. Planted down to the field. The seedlings that the seedling planting mechanism 6 takes out from the seedling platform 7 and transports it downward are guided by the seedling guide 9 (see FIG. 1) so as to go to the field scene.

The seedling supply to each seedling planting mechanism 6 will be described.
A seedling placing portion (not shown) is provided on the surface side of the seedling placing stand 7, and mat seedlings to be supplied to the eight seedling placing mechanisms 6 are placed in this seedling placing portion side by side in the horizontal direction of the machine body. It is constituted as follows. As shown in FIGS. 1, 2, and 3, the seedling platform 7 is placed on the side of the machine body by a seedling platform column 23 that supports the upper end side of the seedling platform 7 and a guide rail 24 that supports the lower end side of the seedling platform 7. It is supported movably in the direction.

  The seedling platform 7 is reciprocated in the lateral direction of the machine body in conjunction with the seedling planting movement of the seedling planting mechanism 6 by a seedling lateral feed device 25 (see FIGS. 1 and 2) provided on the back side of the seedling platform 7. This seedling removal is performed from one end side to the other end side in the lateral direction of the mat-like seedling so that the seedling planting mechanism 6 takes out one seedling from the lower end portion of the mat-like seedling placed on the seedling placement portion. The mat-like seedlings to be supplied to each seedling planting mechanism 6 are reciprocated in the lateral direction of the machine body with respect to the seedling outlet 21 provided in the guide rail 24 so as to be sequentially performed toward the seedling.

  A seedling vertical feed belt 26 is provided on the back side of the lower portion of the seedling mount 7. The seedling vertical feed belt 26 is set by a seedling vertical feed device 27 (see FIG. 2) provided on the back surface side of the seedling stage 7 when the seedling stage 7 reaches the left and right strotalk ends of the lateral transfer. The mat-like seedlings for the respective seedling planting mechanisms 6 that are driven only by the seedling placement unit are vertically fed toward the seedling outlet 21.

The work transmission device 3 that drives the seedling planting mechanism 6, the seedling lateral feed device 25, and the seedling vertical feed device 27 will be described.
As shown in FIGS. 2 and 4, the work transmission device 3 uses the input shaft 13 provided at the front portion of the feed case 12 to drive the driving force from the engine (not shown) of the traveling machine body to the feed case main body 12 a of the feed case 12. And the input driving force is transmitted to the relay transmission shaft 34 via the bevel gear 32 provided at the end of the input shaft 13 and the relay bevel gear 33 meshing with the bevel gear 32, and the driving force of the relay transmission shaft 34 is shifted. The speed is changed by the mechanism 14, and the driving force after the speed change is transmitted from the lateral feed output shaft 35 to the seedling table lateral feed shaft 60 of the seedling lateral feed device 25.

  The speed change mechanism 14 is shifted to a four-stage speed change state by a sliding operation of the shift key 14b by the speed change operation shaft 14a, and the drive speed of the seedling table horizontal feed shaft 60 is changed by changing the drive speed of the lateral feed output shaft 35. Shift to 4 stages and change seedling transverse feed speed to 4 stages.

  As shown in FIG. 14, the lateral feed output shaft 35 and the seedling table lateral feed shaft 60 are connected to each other by a connecting shaft 52 penetrating therethrough so as to be integrally rotatable. The connecting shaft 52 includes an outer tube shaft and an inner tube shaft, and has a double tube shaft structure. The connecting shaft 52 is prevented from being detached by a retaining ring 53 that is externally fitted to the seedling table lateral feed shaft 60.

  The work transmission device 3 feeds the driving force of the lateral feed output shaft 35 through a transmission gear 39 provided at the end of the lateral feed output shaft 35 so as to be integrally rotatable, and a transmission gear 38 meshed with the transmission gear 39. This is transmitted to the output shaft 37, and is transmitted from the vertical feed output shaft 37 to the seedling vertical feed shaft 27 a constituting the seedling vertical feed device 27.

  As shown in FIGS. 2, 4, 5, and 6, the work transmission device 3 transmits the driving force of the relay transmission shaft 34 to the output ring body 41 provided in the output case portion 12 b of the feed case 12 via the gear interlocking mechanism 40. The driving force of the output wheel body 41 is transmitted through the transmission shaft 42 connected to the output wheel body 41 so as to be integrally rotatable, and the rotation driving shaft 43 provided inside each planting drive case 11. It is comprised so that it may transmit.

  The gear interlocking mechanism 40 includes an upper-side relay transmission gear 40a provided on the relay transmission shaft 34 so as to be integrally rotatable, an upper-side relay transmission gear 40a, and a lower-side relay transmission gear 40b that meshes with the output ring body 41. is there.

  The transmission shaft 42 is accommodated in a transmission case 47 provided across the output case portion 12 b of the feed case 12 and the planting drive case 11 and a transmission case 47 provided across a pair of adjacent planting drive cases 11. The transmission shaft 42 is configured to be divided into eight divided transmission shafts 42a in the axial direction. The divided transmission shaft 42 a constituting the transmission shaft 42 is connected inside the output case portion 12 b of the feed case 12 and near the outside of the planting drive case 11. As shown in FIG. 6, the pair of split transmission shafts 42a and 42a connected near the outside of the planting drive case 11 includes a connecting cylinder 48 that fits outside the pair of split transmission shafts 42a and 42a, and each split transmission shaft 42a. And the connecting cylinder 48 are connected to each other by a connecting means including a pair of connecting keys 49, 49 mounted in a distributed manner in the circumferential direction of the divided transmission shaft 42a. The pair of split transmission shafts 42a and 42a connected at the output case portion 12b of the feed case 12 includes the boss portion of the output ring body 41, the boss portion of the output ring body 41, and the split transmission shaft 42a. A pair of connecting keys mounted side by side in the circumferential direction are connected so as to be integrally rotatable.

  A fractional planting clutch 50 is provided at the front end of the rotary transmission shaft 43 located in each planting drive case 11, and a torque limiter 51 is provided at the rear end.

  The odd-number planting clutch 50 includes an operation pin 85 supported inside an operation portion cover 86 that protrudes laterally outward from the planting drive case 11, and the operation pin 85 is slid by a clutch lever 88 via an operation cable 87. By being operated, the seedling planting mechanism 6 is driven and stopped by switching between the entering state and the cutting state. The clutch lever 88 is supported on an operation panel 89 (see FIG. 1) provided on the back side of the upper end portion of the seedling mount 7 so as to be swingable.

The seedling lateral feed device 25 will be described.
As shown in FIGS. 2, 7, and 8, the seedling lateral feed device 25 is relative to the seedling platform lateral feed shaft 60 and the seedling platform lateral feed shaft 60 that are positioned laterally on the lower side of the seedling platform 7. A transfer body 61 that is externally fitted so as to be rotatable and slidable, and a pair of left and right extendable cover cylinders 62 and 62 that are dispersedly arranged so as to cover the seedling table horizontal feed shaft 60 on both sides of the transfer body 61. It is.

  As shown in FIGS. 8 and 14, one end side of the seedling table lateral feed shaft 60 and the lateral feed output shaft 35 are connected to each other so as to be integrally rotatable, and the lateral feed output shaft 35 is connected to the feed case body 12 a of the feed case 12. The support portion 12f is rotatably supported via a bearing 63, and the other end of the seedling table lateral feed shaft 60 is supported by a support portion 64a of a stay 64 projecting upward from the main frame 10 (see FIG. (Not shown) is rotatably supported.

  Accordingly, the seedling table lateral feed shaft 60 is rotatably supported by the support portion 12f of the feed case 12 and the support portion 64a of the stay 64 that are located separately at both ends, and the seedling planting mechanism 6 is supported by the lateral feed output shaft 35. It is driven to rotate in one direction in conjunction with the seedling planting movement.

  The transfer body 61 includes a transfer body main body 61a having a piece portion 66 in which a claw body 66a is engaged in a lateral feed spiral groove 65 provided on the peripheral surface of the seedling table horizontal feed shaft 60, and a transfer body main body 61a. And a seedling platform transfer part 61b connected by a connecting bolt 67 on the upper surface side of the head. As shown in FIGS. 7, 8, and 10, the seedling platform transfer unit 61 b is coupled to an operation arm 68 provided on the back side of the seedling platform 7 through a coupling rod 69 so as to be movable together.

  One of the pair of left and right extension cover cylinders 62, 62 is attached across a support portion 61 c provided at the end of the transfer body 61 on the feed case side and a support portion 12 f of the feed case 12. The other telescopic cover cylinder 62 of the pair of left and right telescopic cover cylinders 62 and 62 is attached across a support portion 61 c provided at the end portion on the stay side of the transfer body 61 and a support portion 64 a of the stay 64. At the end of each telescopic cover cylinder 62, the mounting portion 62a provided to be attached to the support portion 61c of the transfer body 61, the support portion 12f of the feed case 12 and the support portion 64a of the stay 64 is formed in a cylindrical shape, The outer peripheral surfaces of 12f, 61c, and 64a are externally fitted and tightened and connected by a tightening band 70. The pair of left and right expansion / contraction cover cylinders 62, 62 are constituted by rubber cylinders formed in a bellows shape so as to easily expand and contract.

  FIG. 8 is a cross-sectional view showing the seedling lateral feed device 25 in a state where the transfer body 61 is located at the central location S1 of the movement range S. FIG. 10 is a cross-sectional view showing the seedling horizontal feeding device 25 in a state where the transfer body 61 is located at one end of the movement range S.

  As shown in FIG. 8 and FIG. 10, the seedling horizontal feed device 25 is configured such that when the seedling platform lateral feed shaft 60 is driven to rotate, the transfer body 61 is moved by the lateral feed spiral groove 65 that rotates the seedling platform lateral feed shaft 60. And the transfer body 61 moves back and forth while expanding and contracting the pair of left and right extension cover cylinders 62 and 62 in the movement range S, and moves the operation arm 68 via the connecting rod 69. The seedling stage 7 is reciprocated left and right within the movement range S so as to move with respect to the seedling extraction port 21 from the lateral one end side to the lateral other end side.

  As shown in FIGS. 8 and 10, a lateral feed shaft cover 71 that covers the lateral feed spiral groove 65 is extended from the transfer body 61 to the inside of the pair of left and right extension cover cylinders 62, 62. The lubricating oil storage chamber 72 is formed inside 62 so that the lubricating oil supplied to the seedling table lateral feed shaft 60 can be stored in the pair of left and right telescopic cover cylinders 62 and 62. The pair of left and right lateral feed shaft covers 71, 71 are formed in a cylindrical shape so as to cover the seedling table lateral feed shaft 60 over the entire circumference. The pair of left and right lateral feed shaft covers 71, 71 are integrally formed at the lateral end of the transport body 61 a in the transport body 61.

  That is, when the expansion / contraction cover cylinder 62 is operated from the free state where the expansion / contraction cover cylinder 62 is not subjected to the shortening / extension operation, the expansion / contraction cover cylinder 62 is likely to be deformed. The cylinders 62 and 62 are arranged so as to be in a free state in a state where the transfer body 61 is located at the central position S1 of the movement range S, and the pair of left and right lateral feed shaft covers 71 and 71 are arranged. The extended end 71a of the lateral feed shaft cover 71 is biased toward the side where the central location S1 of the movement range S is located with respect to the end 65a of the lateral feed spiral groove 65 in a state of being located at the central location S1. It is arranged so as to be located at substantially the same location as the end 65a of the transverse feed spiral groove 65.

  FIG. 9 is a cross-sectional view showing the seedling horizontal feeding device 25 in a state where the transfer body 61 is located at a location between the central location S1 of the movement range S and one end location. That is, as shown in FIG. 9, when the left and right telescopic cover cylinders 62 are operated from the free state to the shortened side, the transverse feed shaft cover positioned inside the telescopic cover cylinder 62 in the shortened operation state. 71 is in a state of covering the lateral feed spiral groove 65, and the lateral feed shaft cover 71 avoids contact between the deformed expansion / contraction cover cylinder 62 and the lateral feed spiral groove 65. The expansion cover cylinder 62 is provided with an oil bath function in order to avoid the occurrence of damage due to contact with the lateral feed spiral groove 65 that causes the above.

  In the above-described embodiment, an example in which the cylindrical transverse feed shaft cover 71 is employed has been described. However, the vertical cross section is located only above the rectangular tubular transverse feed shaft cover or the seedling table lateral feed shaft 60. You may employ | adopt the transverse feed shaft cover which formed the shape in the circular arc or the groove shape.

  In the above-described embodiment, in the state where the transfer body 61 is located at the central location S1 of the movement range S, the extended end 71a of the lateral feed shaft cover 71 is the center of the movement range S with respect to the end 65a of the lateral feed spiral groove 65. Although the lateral feed shaft cover 71 is disposed so as to be located at the same location as the end 65a of the lateral feed spiral groove 65, the location is shifted to the side where the location S1 is located. In the state located at S1, the extended end 71a of the transverse feed shaft cover 71 is a place that is biased to the opposite side to the side where the central place S1 of the movement range S is located with respect to the end 65a of the transverse feed spiral groove 65. Alternatively, the lateral feed shaft cover 71 may be provided so as to be positioned at substantially the same location as the end 65a of the lateral feed spiral groove 65. Alternatively, in a state in which the transfer body 61 is located at the central location S1 of the movement range S, the lateral feed shaft cover is arranged such that the extended end 71a of the lateral feed shaft cover 71 is located at the same location as the end 65a of the lateral feed spiral groove 65. 71 may be deployed and implemented.

  As shown in FIGS. 8, 11, 12, and 13, the transfer body main body 61 a of the transfer body 61 is provided with a communication passage 75 that communicates the lubricating oil storage chamber 72 located in the pair of left and right extension cover cylinders 62 and 62. . The communication passage 75 causes the lubricating oil in the lubricating oil storage chamber 72 on the side whose volume is reduced by the movement of the transfer body 61 to flow into the lubricating oil storage chamber 72 on the side where the volume is increased, thereby reducing the lubricating oil storage chamber on the volume reduction side. The movement resistance applied to the transfer body 61 is suppressed to a small level by the lubricating oil 72.

  The communication passage 75 is a seedling so that the left and right lubricating oil storage chambers 72, 72 can communicate with each other at a height lower than the oil level in the lubricating oil storage chamber 72 located in the pair of left and right extension cover cylinders 62, 62. The mounting horizontal feed shaft 60 is disposed at a lower arrangement height than the axis 60a. The communication path 75 is formed so that the longitudinal cross-sectional shape is an arc shape. Lubricant for supplying lubricating oil from the communication path 75 to the seedling table lateral feed shaft 60 by connecting the lateral feed shaft hole through which the seedling platform lateral feed shaft 60 is inserted and the communication path 75 to the transfer body main body 61a of the transport body 61. A path 76 is provided.

  As shown in FIGS. 8, 11, 12, and 13, an oil supply port 78 that can be opened and closed by a detachable plug 77 is provided on the upper surface side of the transfer body 61, and the pair of left and right extension cover cylinders 62 and 62 are lubricated from the oil supply port 78. The lubricating oil can be supplied to the oil storage chamber 72.

  The oil supply port 78 has a pair of left and right extendable cover cylinders via an oil supply chamber 79 provided in the transfer body main body 61a and a pair of left and right oil supply passages 80, 80 distributed on both sides of the piece 66 of the transfer body main body 61a. The lubricating oil reservoir chambers 62 and 62 communicate with each other. The pair of left and right oil supply passages 80, 80 include a branch oil supply passage 80 a that communicates with the accommodation chamber of the piece portion 66, and distributes and supplies the lubricating oil from the oil supply port 78 to the piece portion 66.

[Another embodiment]
FIG. 15 is a cross-sectional view showing a seedling lateral feed device 25 including the first different embodiment. As shown in this figure, in the seedling lateral feed device 25 provided with the first alternative embodiment, the seedling platform horizontal feed shaft 60 is provided with both a feed shaft portion 60b provided with a lateral feed spiral groove 65 and a feed shaft portion 60b. A pair of left and right receiving shaft portions 60c, 60c that are distributed and located on the lateral side are provided.

  When the pair of left and right receiving shaft portions 60c, 60c is provided with a length L that is more than half the moving range S of the transfer body 61, and the deformation of the expansion / contraction cover tube 62 occurs, the expansion cover tube 62 is received by the receiving shaft portion 60c. The telescopic cover cylinder 62 can be prevented from coming into contact with the lateral feed spiral groove 65 by being received by.

  Instead of providing the receiving shaft portion 60c with a length L that is more than half of the moving range S of the transfer body 61, it is provided with the same length as half of the moving range S or smaller than half of the moving range S. Thus, a length corresponding to almost half may be provided.

  FIG. 16 is a cross-sectional view showing a seedling horizontal feeding device 25 including a second alternative embodiment. As shown in this figure, in the seedling lateral feed device 25 provided with the second alternative embodiment, the seedling platform lateral feed shaft 60 is provided with both the feed shaft portion 60b provided with the lateral feed spiral groove 65 and the feed shaft portion 60b. A pair of left and right large-diameter shaft portions 60d and 60d that are distributed and located on the lateral side are provided.

  When the pair of left and right large-diameter shaft portions 60d, 60d has an outer diameter D larger than the feed shaft portion 60b, and the deformation of the expansion / contraction cover tube 62 occurs, the expansion / contraction cover tube 62 is received by the large-diameter shaft portion 60d, The telescopic cover cylinder 62 is configured to avoid contact with the lateral feed spiral groove 65.

  FIG. 17 is a cross-sectional view showing a seedling lateral feed device 25 including a third alternative embodiment. As shown in this figure, in the seedling lateral feed device 25 provided with the third alternative embodiment, a catch rod 81 is provided at a location above the seedling platform lateral feed shaft 60 inside the pair of left and right telescopic cover cylinders 62, 62. Is laid along the seedling table horizontal feed shaft 60. The receiving rod 81 is inserted through a through hole 61d provided in the transfer body 61, and the transfer body 61 is allowed to move relative to the receiving rod 81 for transferring the seedling table, and the stay 64 It is attached over the feed case 12.

  When the expansion / contraction cover cylinder 62 is deformed, the expansion / contraction cover cylinder 62 is received by a receiving rod 81 so that the expansion / contraction cover cylinder 62 is prevented from coming into contact with the lateral feed spiral groove 65.

Instead of adopting a receiving rod 81 positioned in series between the stay 64 and the feed case 12, the feed between the one end of the lateral feed spiral groove 65 and the stay 64 and the other end of the lateral feed spiral groove 65 is fed. You may implement by employ | adopting the left-right paired receiving rods 81 and 81 which are disperse | distributed and located between cases 12. FIG.
[Another Example]

(1) In the above-described embodiment, an example in which the seedling planting mechanism 6 including the rotating rotor 6a is provided has been described. However, a seedling planting mechanism including a swingable driving arm and a single planting claw is provided. Also good.

(2) In the above-described embodiment, an example in which eight seedling planting mechanisms 6 are provided has been described. However, a number of seedling planting mechanisms other than eight, such as six or four, may be provided.

  The present invention can be used for a rice transplanter configured as a walking type as well as a rice transplanter configured as a riding type.

7 Seedling stand 12f, 64a Supporting portion 60 Seedling stand lateral feed shaft 60a Axle core 60b Feed shaft portion 60c Receiving shaft portion (contact avoiding means)
60d Large diameter shaft (contact avoidance means)
61 Transfer body 62 Telescopic cover cylinder 65 Lateral feed spiral groove 65a End 71 Lateral feed shaft cover (contact avoiding means)
71a Extension end 72 Lubricating oil storage chamber 75 Communication path 78 Lubrication port 81 Receiving rod (contact avoiding means)
D Outer diameter S Moving range S1 Center location

Claims (9)

A seedling platform lateral feed shaft that is rotationally driven with a lateral feed spiral groove on the peripheral surface, and is fitted on the seedling platform lateral feed shaft and engaged with the lateral feed spiral groove, and the seedling platform lateral feed A transfer body that is reciprocally transferred by a shaft to perform a lateral feed operation of the seedling platform, and is mounted across the transfer body and support portions positioned at both ends of the seedling platform lateral feed shaft to cover the seedling platform lateral feed shaft A seedling horizontal feed device of a rice transplanter equipped with a pair of left and right extension cover cylinders,
Contact avoiding means for avoiding contact between the extension cover cylinder and the lateral feed spiral groove by deformation of the extension cover cylinder is disposed inside the pair of left and right extension cover cylinders,
A seedling horizontal feed apparatus for a rice transplanter, wherein the pair of left and right telescopic cover cylinders are configured to form a lubricating oil storage chamber therein. A lateral feed shaft cover that extends from the transfer body to the inside of the pair of left and right telescopic cover cylinders and covers the lateral feed spiral groove is provided,
The seedling horizontal feed apparatus for a rice transplanter according to claim 1, wherein the deformable expansion / contraction cover cylinder is received by the lateral feed shaft cover to avoid contact between the expansion / contraction cover cylinder and the lateral feed spiral groove.   The transverse feed shaft cover is arranged so that the extended end of the transverse feed shaft cover is located at the same or substantially the same position as the end of the transverse feed spiral groove in a state where the transfer body is located at the center of the moving range. The seedling horizontal feed apparatus of the rice transplanter according to claim 2. Positioning the seedling platform lateral feed shaft with a feed shaft portion having the lateral feed spiral groove, and a length approximately half or more than half of the moving range of the transfer body on both sides of the feed shaft portion Comprising a receiving shaft to
The seedling horizontal feed apparatus of the rice transplanter according to claim 1, wherein the deformable expansion / contraction cover cylinder is received by the receiving shaft portion to avoid contact between the expansion / contraction cover cylinder and the horizontal feed spiral groove. The seedling platform lateral feed shaft is provided with a feed shaft portion having the lateral feed spiral groove, and a large-diameter shaft portion positioned on both sides of the feed shaft portion with an outer diameter larger than the feed shaft portion. And configure
The seedling horizontal feed apparatus of the rice transplanter according to claim 1, wherein the deformed expansion / contraction cover cylinder is received by the large-diameter shaft portion so as to avoid contact between the expansion / contraction cover cylinder and the lateral feed spiral groove. Provided with a receiving rod erected in the direction along the seedling table horizontal feed shaft in the upper part of the seedling table horizontal feed shaft inside the pair of left and right extension cover cylinders,
The seedling horizontal feed device of the rice transplanter according to claim 1, wherein the deformable expansion / contraction cover cylinder is received by the receiving rod to avoid contact between the expansion / contraction cover cylinder and the horizontal feed spiral groove.   The seedling horizontal feed apparatus of the rice transplanter as described in any one of Claims 1-6 in which the said injection body is provided with the oil filling port connected to the lubricating oil storage chamber inside the said pair of right-and-left expansion-contraction cover cylinders.   The seedling horizontal feed apparatus of the rice transplanter as described in any one of Claims 1-7 in which the communicating path which connects the lubricating oil storage chamber inside the said left-right paired expansion-contraction cover cylinder is provided in the said transfer body.   The seedling horizontal feed apparatus of the rice transplanter according to claim 8, wherein the communication path is arranged at an arrangement height lower than an axis of the seedling stand horizontal feed shaft.

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