JP4528228B2 - Lubricating device for transverse feed drive in rice transplanter - Google Patents

Description

  The present invention relates to a lubrication device that lubricates a transverse feed drive shaft of a seedling transverse feed device of a rice transplanter provided with a seedling placing table that can be reciprocated in a lateral direction of a traveling machine body.

In the above rice transplanter, conventionally, as shown in, for example, Patent Document 1, one configured to lubricate a lateral feed drive shaft of a seedling lateral feed device that reciprocally moves a seedling placing table in the horizontal direction. there were.
That is, as shown in FIGS. 10 and 11, the lubricating device disclosed in Patent Document 1 includes a spiral groove inside a cylindrical member 38 that surrounds the transverse feed drive shaft 17 in a state in which the top member 24 is accommodated. 23 is formed in the cylindrical member 38, and a rotating body 40 that rotates integrally with the transverse feed drive shaft 17 and rotates integrally with the transverse feed drive shaft 17 is provided. The rotating body 40 is provided with a tongue 41 capable of repelling the lubricating oil accumulated in the reservoir 39, and slides horizontally with respect to the lateral feed drive shaft 17 during the lateral feed drive of the seedling stage 16. However, the tongue piece 41 is always configured to repel the lubricating oil and supply it to the outer surface of the lateral feed drive shaft 17.

JP 2000-270631 A (paragraph number 0033, paragraph 0034, FIG. 10, FIG. 11 on page 4)

  In the lubrication device for the transverse feed drive shaft of the conventional seedling transverse feed device described above, a case for forming a reservoir for lubricating the transverse feed drive shaft is required separately from the lubricating oil put in the planting mission case, It was disadvantageous in terms of structure.

  An object of the present invention is to provide a lubrication for lubricating a transverse feed drive shaft having a simple structure by using a drive shaft positioned lower than the transverse feed drive shaft without providing a separate case for lubricating the transverse feed drive shaft separately. To provide an apparatus.

[Configuration of the first invention]
A first feature of the present invention (Claim 1) is that a transmission case extends rearward from a transmission case provided at a front portion of a traveling aircraft body, and a planting transmission case is connected to a rear end portion of the transmission case, The planting mission case is composed of a lower case portion connected to the rear end portion of the transmission case, and an upper case portion wider than the lower case portion and connected to the upper end surface of the lower case portion, in the upper case portion, together with the kicking set the horizontal feed drive shaft for transverse feed drive in the lateral direction of the vehicle body to stand seedlings, the bottom within the lower casing portion, provided planting drive shaft for driving the seedling planting mechanism, the lateral an output shaft at an upper portion in the lower case portion in a lower than feed drive shaft, to secure the sprocket for transmitting power from the planting drive shaft to said output shaft to said output shaft, next to the sprocket There lubricant scraping up device fitted to the output shaft in a state located at a point that is connected to the output shaft.

[Action]
According to the first feature, the lubricating oil scooping device is connected to the output shaft located below the transverse feed drive shaft provided in the upper part in the planting mission case, and the lubricating oil for lubricating the lower output shaft As the output shaft rotates, lubricating oil can be supplied to the lateral feed drive shaft located at the upper level by the lubricating oil scraping device. This eliminates the need for a lubricating oil case.

〔The invention's effect〕
In the first aspect of the invention, the lubricating oil can be supplied to the lateral feed drive shaft using the lubricating oil that lubricates the output shaft positioned lower than the lateral feed drive shaft, and the lateral feed drive shaft is supplied with the lateral feed separately. Since a dedicated lubricating oil case for the drive shaft is not required, the lubrication structure for the transverse feed drive shaft can be simplified.

[Configuration of the second invention]
A second feature of the present invention (Claim 2) is the invention according to Claim 1 , wherein the power from the output shaft is transmitted to a planting drive case located on the side of the lower case part. There is a point.
[Configuration of the third invention]
According to a third feature of the present invention (Claim 3), in the invention according to Claim 1 or 2, the output shaft and the planting on the side surface of the lower case portion on the side where the lubricating oil scooping device is disposed. A concave portion that is recessed from the side surface of the lower case portion to the inside of the case is formed in a portion that is positioned between the drive shaft.

[Configuration of the fourth invention]
A fourth feature of the present invention (Claim 4) is that, in the invention according to any one of Claims 1 to 3, the lubricating oil scooping device is provided with a plurality of lubricating oil scoop plates in a fitting cylinder. is there.
[Action]
According to the fourth feature, the transverse feed drive shaft can be lubricated a plurality of times for one rotation of the output shaft, so that the lubricating oil can always be spread over the entire circumference of the transverse feed drive shaft. It became so.

〔The invention's effect〕
In the fourth aspect of the invention, since it is possible to lubricate the transverse feed drive shaft a plurality of times for one rotation of the output shaft, the lubricating oil can be spread over the entire circumference of the transverse feed drive shaft. The feed drive shaft can be lubricated appropriately.

[Configuration of the fifth invention]
A fifth feature of the present invention (Claim 5 ) is that , in the invention according to Claim 4 , the lubricating oil rake plate is formed in an arch shape having a center of curvature on the rake face side.

[Action]
According to the fifth feature, the rotation of the output shaft at the time of planting is constant, and by effectively matching the rotation speed of the output shaft and the curvature of the rake plate, the loss of the lubricating oil that is scraped up is reduced, and the transverse drive shaft is effectively Can be lubricated.

〔The invention's effect〕
In the fifth aspect of the invention, the lateral feed drive shaft can be effectively lubricated by reducing the scraping loss of the lubricating oil by the rake plate.

[Configuration of the sixth invention]
A sixth feature of the present invention (Claim 6 ) is that , in the invention according to any one of Claims 1 to 5 , the lubricating oil scooping device does not slide and rotate around the output shaft via the sprocket. The point is connected to the output shaft.

[Action]
According to the sixth feature, since the lubricating oil scooping device is not directly connected to the output shaft but is connected to the output shaft via the sprocket driven by the rotation of the output shaft, the sprocket attached to the output shaft and only performing the lubricating oil scooped up device coupling structure, it is not necessary to provide a coupling structure for coupling the especially splashed lubricating oil system to the output shaft.

〔The invention's effect〕
Above the sixth aspect of the invention, to attach the scooping lubricating oil system, a sprocket and the lubricating oil scooped up device attached to the output shaft need only apply the connecting structure, for connecting the especially splashed lubricating oil system to the output shaft Since it is not necessary to apply the connecting structure, it was possible to contribute to cost reduction.

[Configuration of the seventh invention]
According to a seventh aspect of the present invention (invention 7 ) , in the invention according to claim 6 , a pin for a pin fitting hole is formed in the sprocket and the cylinder of the lubricating oil scooping device fitted in the output shaft is provided. A pin fitting space is formed in the shaped portion, and the pin is fitted into the pin fitting hole of the sprocket and the pin fitting space of the lubricating oil scooping device so that both rotate integrally.

[Action]
According to the seventh feature, the pin fitting hole is formed in the sprocket, the pin fitting space is formed in the cylindrical portion of the lubricating oil scraping device, the pin fitting hole of the sprocket and the pin of the lubricating oil scraping device Since the pins are fitted in the fitting space and both rotate together, it is only necessary to adopt a pin coupling structure for the sprocket and the lubricating oil scooping device.

〔The invention's effect〕
Aforementioned seventh invention, since both fitted pins fitting wearing space and the pins of the pin-fitting hole and the lubricant scraping up device sprocket is arranged to rotate integrally, scraping sprocket and lubricants It was possible to make the structure simple by simply using the pin connection structure with the lifting device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1 and FIG. 2, a prime mover provided with an engine 2 for transmitting power to the wheel 1 and the like, and a fuel tank 3 for the engine at a front end portion of a traveling body that is self-propelled by a pair of right and left driveable wheels 1 A control part A provided with a control handle 4 extending rearward from the machine frame 20 of the traveling machine body, four seedling planting mechanisms 31 arranged in the lateral direction of the traveling machine body, etc. A pair of left and right left and right wheels 1, 1 are located separately on both sides of the center ground float 5 and the left and right wheels 1, 1 below the traveling machine body. A side-ground float 6 is provided, and a stand-type seedling stand 7 located above the left and right wheels 1 and 1 is supported by a traveling machine body via a support column 8 to constitute a walking type rice transplanter capable of planting four rows.

  This rice transplanter performs planting work of rice seedlings. When the hydraulic lift cylinder 9 positioned below the engine 2 is telescopically operated, the lift cylinder 9 serves as a wheel support body for the left and right wheels 1. The drive case 10 is swung up and down with respect to the body frame 20 of the traveling body, and the left and right wheels 1 and 1 are moved up and down with respect to the body frame 20 so that the grounding floats 5 and 6 are placed on the surface. Ascending / descending operation is performed between the grounded descending working state and the ascending non-working state where the grounding floats 5 and 6 are separated from the surface. When the traveling machine is run in the descending work state, each grounding float 5, 6 slides on the surface of the field to level the ground, and the seedling planting work unit 30 uses the four seedling planting mechanisms 31 to contact the ground surface floating 5, Seedlings are planted at the leveling site by No.6.

  As shown in FIG. 2, a transmission case 21 provided near the rear of the engine 2 at the front of the traveling aircraft, an engine mounting frame 22 extending forward from the front of the transmission case 21, and the rear of the transmission case 21 A transmission case 23 made of a square steel pipe extending rearward from the rear, a planting mission case 24 connected to the rear end of the transmission case 23, and extending laterally outward from both lateral sides of the planting mission case 24. The fuselage frame 20 is constituted by a cylindrical transmission case 25 to be brought out, and a planting drive case 26 connected to the extending end of each transmission case 25, and the engine 2 is disposed on the upper surface side of the engine mounting frame 22. And the wheel 1 is supported on both lateral sides of the transmission case 21 via the wheel driving case 10.

  As shown in FIGS. 1 and 2, the steering handle 4 includes a base-side handle rod 4 a made of a square steel pipe member that extends from both lateral sides of the planting mission case 24 upward to the rear of the traveling body, and a pair of left and right handles. A distal end handle rod 4b made of a circular steel pipe fixed to the extending end portion of the base side handle rod 4a and having a pair of left and right grip portions 4c, and connected to the left and right distal end handle rods 4b and 4b. It is comprised by the reverse U-shaped connection rod 4d. The connecting rod 4d is easier to grip than the grip portion 4c, and is easy to use when working for a long time with less fatigue.

  The seedling planting work section 30 will be described in detail. As shown in FIGS. 2, 3 and 4, the seedling planting work section 30 is provided with the planting mission case 24 located in the center of the traveling machine body in the lateral direction. The planting drive case 26 located on both sides of the lower case portion 24a of the mission case 24, the seedling planting mechanism 31 that is movably mounted on both sides of the planting mission case 24, and the running of each planting drive case 26 The base side handle 杆 4a of the steering handle 4 is located behind the seedling planting mechanism 31, the planting mission case 24, and the planting drive cases 26, which are movably mounted on the lateral side of the body side, on the rear side of the traveling body. One seedling stage 32 provided near the front side on the upper end side is provided.

  As shown in FIGS. 3 and 4, each seedling planting mechanism 31 has a middle portion coupled to a drive arm 33 supported by a planting mission case 24 and a planting drive case 26 so as to be able to drive and rotate, and can be planted. A planting arm 35 whose one end is connected to a swinging arm 34 that the mission case 24 and the planting drive case 26 are reciprocally swingably supported, and a planting claw 36 positioned on the other end of the planting arm 35. A seedling pusher 37 configured to be slidably supported by the planting arm 35 so as to reciprocally slide along the planting arm 35 and to be slidably driven by an extrusion drive mechanism (not shown) located inside the planting arm 35. It is configured with.

  Thus, each seedling planting mechanism 31 is driven by the drive arm 33 so as to swing back and forth in the vertical direction of the traveling machine body with the planting arm 35 supported by the swing arm 34 at one end side as a swing fulcrum. The planting claw 36 is reciprocated up and down while drawing a rotation trajectory T between the seedling take-out port 38a provided on the guide rail 38 located on the lower end side of the seedling platform 32 and the rice field, and takes out the seedling. At the mouth 38a, a block of seedlings is cut from the mat-like seedling on the seedling stand, taken out, conveyed downward, and lowered to the paddy surface. When the block seedling is lowered to the paddy surface, the seedling pusher 37 transfers the block seedling to the paddy mud. The planting is performed by pushing and planting, and after planting the seedling, the seedling is moved up from the rice field and returned to the seedling outlet 38a.

  The seedling stage 32 is configured to place a plurality of mat-like seedlings separately supplied to the plurality of seedling planting mechanisms 31 side by side in the horizontal direction of the traveling machine body, and toward the upper end side of the seedling stage 32. In the inclined posture in a state of being located on the rear side of the traveling machine body, the traveling machine body sideways on the guide rail 38 and the like supported by the support frame 11 (see FIG. 4) extending from the respective planting drive cases 26 toward the rear of the traveling machine body. It is slidably supported in the direction. As shown in FIG. 4 and the like, the seedlings are seeded in two places in the vertical direction of the seedling platform on the back side of each of the plurality of seedling platforms arranged in the lateral direction of the seedling platform in the lateral direction of the seedling platform 32. A longitudinal feed wheel 39 is provided. All the seedling vertical feed wheels 39 positioned on the upper side in the vertical direction of the seedling table and all the seedling vertical feed wheels 39 positioned on the lower side in the vertical direction of the seedling table are each one rotation support shaft. It is supported by 39a so that it can rotate integrally. The rotation support shaft 39a of the upper seedling vertical feed ring body 39 and the lower seedling vertical feed so that the upper seedling vertical feed ring body 39 and the lower seedling vertical feed ring body 39 rotate in conjunction with each other. The rotating support shaft 39a of the ring body 39 is interlocked by an endless chain (not shown).

As shown in FIGS. 3 and 4, the planting mission case 24 includes a lower case portion 24a to which the transmission cases 23 and 25 and the seedling planting mechanism 31 are connected, and the lower case portion 24a. The upper case portion 24b is manufactured as a case and is placed on the upper end surface of the lower case portion 24a and is detachably connected by a connecting bolt. The lower case portion 24a is formed with a recess 24A that is recessed from the side surface of the lower case portion 24a toward the inside of the case. The planting mission case 24 is provided with a seedling feed shaft 40 that slidably penetrates the upper case portion 24b in the lateral direction of the traveling machine body, and the seedling feed shaft 40 is provided at both end portions on the lower end side of the seedling placing table 32. A connecting portion constituting member is attached and connected to a connecting portion 41 provided in a state of extending forward from the seedling mount 32 so as to integrally move in the lateral direction of the traveling machine body. The seedling feeding shaft 40 is configured to rotate with respect to the upper case portion 24b of the planting mission case 24, and is rotatably supported by the pair of left and right connecting portions 41 of the seedling mounting base 32, so that the seedling feeding is performed. A seedling vertical feed arm 42 provided on one end side of the shaft 40 so as to be integrally rotatable is a one-way rotation clutch (not shown) on the rotation support shaft 39 a of the seedling vertical feed ring 39 on the upper side of the seedling mount 32. Is linked to a wheel drive arm 39b connected via a linkage rod 43. A driving arm 33 of the seedling planting mechanism 31 is driven by inputting a driving force transmitted from the engine 2 through the transmission case 23 and the mission case 21 into the lower case portion 24a of the planting mission case 24. The planting mechanism drive mechanism 50 (see FIG. 5) for driving the planting mechanism is provided, and is transmitted to the interior of each planting drive case 26 from the planting mechanism drive mechanism 50 in the planting mission case via the transmission case 25. A transmission mechanism (not shown) using a chain for transmitting the driving force to the driving arm 33 of the seedling planting mechanism 31 to drive the driving arm 33 is provided, and the inside of the upper case portion 24b of the planting mission case 24 is The seedling feed shaft 40 is reciprocated by being driven by inputting a driving force from the planting mechanism drive mechanism 50 in the lower case portion. And a seedling stage drive mechanism that drives the seedling vertical feed arm 42 by rotating the seedling feed shaft 40 by a set rotation every time the seedling stage 32 reaches the left and right lateral feed stroke ends. 60 (see FIG. 5) is provided.

  Accordingly, the planting mission case 24 is driven by driving the drive arms 33 of the seedling planting mechanism 31 located on both sides of the planting mission case 24 by the planting mechanism drive mechanism 50 located inside the lower case portion 24a. Both seedling planting mechanisms 31, 31 are driven to perform the seedling planting movement, and each planting drive case 26 is seeded planting mechanism located inside the planting drive case 26 by a transmission mechanism located inside the planting drive case 26. By driving the drive arm 33 of the 31, the seedling planting mechanism 31 is driven to perform the seedling planting movement. The planting mission case 24 is configured to drive the seedling placing table 32 by driving the seedling placing shaft 32 by slidingly driving the seedling feeding shaft 40 by the seedling placing drive mechanism 60 located inside the upper case portion 24b. In conjunction with this, the paper is transported laterally along the guide rail 38 so as to reciprocate in the lateral direction of the traveling machine body. Further, the planting mission case 24 rotates the seedling feed shaft 40 by the seedling stage driving mechanism 60 located inside the upper case portion 24b every time the seedling stage 32 reaches the left and right lateral movement stroke ends. By swinging the seedling vertical feed arm 42, all the seedling vertical feed wheels 39 of the seedling stage 32 are rotationally driven in the seedling vertical feed direction.

  That is, the seedling planting operation unit 30 drives the seedling planting mechanism 31 mounted on both sides of the planting mission case 24 so as to perform the seedling planting exercise by driving the driving arm 33 by the planting mission case 24, The seedling planting mechanism 31 mounted on the planting drive case 26 is driven so as to perform the seedling planting movement by driving the drive arm 33 by the planting drive case 26, and is placed on the seedling platform 32 by each seedling planting mechanism 31. One block of seedlings is cut out from the mat-like seedlings, transported down to the rice field, and planted in the mud.

  Then, the seedling placing base 32 is reciprocated in the lateral direction of the traveling body in conjunction with the seedling planting movement of the seedling planting mechanism 31 by the reciprocating sliding drive of the seedling feeding shaft 40 by the planting mission case 24, and each seedling planting mechanism 31 is seeded. Each mat-like seedling is so cut out that one block of block seedlings is sequentially cut from the lower end of the mat-like seedling to be supplied to the planting mechanism 31 toward the other end. Is reciprocated in the lateral direction of the traveling machine body with respect to the seedling take-out port 38a. When the seedling stage 32 reaches the left and right lateral movement stroke ends, all the seedling vertical feed wheels 39 of the seedling stage 32 are rotated by the rotational drive of the seedling feed axis 40 by the planting mission case 24 only by the set rotation angle. It is driven dynamically and all the mat-like seedlings placed on the seedling placing table 32 are vertically fed toward the seedling taking-out port 38a by an amount corresponding to the length of the seedling placing mechanism 31 in the vertical direction of the seedling placing stand. It is supposed to be.

  As shown in FIGS. 5, 6, and 7, in the planting mechanism drive mechanism 50 located inside the lower case portion 24 a of the planting mission case 24, an input member 51 a is connected to the transmission shaft 23 a of the transmission case 23. Torque limiter 51, a transmission clutch 52 in which an output shaft 51 b of this torque limiter 51 is provided so as to rotate integrally therewith, a planting clutch 53 in which an input gear 53 a meshes, and a cylindrical shaft-shaped output member 53 b of this planting clutch 53. A planting drive shaft 54 that is inserted through and connected to the output member 53b so as to be integrally rotatable, a transmission chain 55 wound around an output sprocket 54a that the planting drive shaft 54 is integrally rotatable, The claw side output shaft 56 in which the input sprocket 56 a is engaged with the transmission chain 55, and the input sprocket to the transmission chain 55. Socket 57a is have configured provided with a seedling stand side output shaft 57 are meshed.

  That is, the planting mechanism drive mechanism 50 inputs the driving force transmitted from the engine 2 to the transmission case 23 to the torque limiter 51 and transmits the output of the torque limiter 51 to the planting drive shaft 54 via the planting clutch 53. A driving arm 33 of the seedling planting mechanism 31 located on both sides of the planting mission case 24 is driven by the lever planting driving shaft 54, and the driving force of the planting driving shaft 54 is transmitted to the claw side output shaft via the transmission chain 55. 56, and the driving force of the claw side output shaft 56 is transmitted from one end side of the claw side output shaft 56 to the one planting drive case 26 via the transmission case 25 from the other end side of the claw side output shaft 56. This is transmitted to the other planting drive case 26 via the transmission case 25.

  As shown in FIGS. 5 and 7, the seedling stage drive mechanism 60 located inside the upper case part 24b of the planting mission case 24 is integrated with the seedling stage side output shaft 57 of the lower case part 24a. An input shaft 61, a transmission gear 62 that is rotatably provided as an integral part of the input shaft 61, a transverse feed drive shaft 64 that is interlocked by a passive gear 63, and an engagement cylinder portion 65b on the transverse feed drive shaft 64. Is provided with a seedling feed shaft drive means 69 provided with a lateral feed body 65 that is externally fitted so as to be relatively rotatable, and drive claws 66 provided at both ends of the transverse feed drive shaft 64.

  The claw body 65a provided on the engagement cylinder portion 65b of the lateral feed body 65 is engaged with the spiral groove 64a provided on the peripheral surface of the lateral feed drive shaft 64, whereby the lateral feed body 65 is The drive shaft 64 is engaged with the lateral feed drive shaft 64 so as to be reciprocated along the lateral feed drive shaft 64. The lateral feed body 65 is connected to the upper case portion 24b of the planting mission case 24 together with the lateral feed shaft 40 by a pair of connecting portions 65c positioned at the opposite end of the lateral feed body 65 from the engaging cylinder portion 65b. It is engaged with the transverse feed shaft 40 so as to slide relative to it.

Reference numeral F denotes a lubricating oil level. The claw side output shaft 56 is provided with a lubricating oil scooping device 44 that scoops up and scatters the lubricating oil on the lateral feed drive shaft 64. The lubricating oil scooping device 44 is provided with lubricating oil scooping plates 46 on the outer periphery of the fitting cylinder 45 at two locations symmetrically in the circumferential direction. The tubular body 45 is provided with a pin fitting space 48 into which a pin 47 as a connecting member is inserted in a state in which the tubular body 45 is fitted to the claw side output shaft 56.
The input sprocket 56a is spline-fitted to the claw-side output shaft 56, and a groove 56c into which the pin 47 is fitted is formed in the fitting boss part 56b. Then, by setting the connecting pin 47 in the groove 56c so that the pin 47 is fitted in the space 48 of the fitting cylinder 45 of the lubricating oil scooping device 44, the claw side output shaft is set. The rotation of the lubricating oil scooping device 44 is not rotated idly by the rotation of 56, and rotates integrally with the input sprocket 56a, the lubricating oil below the liquid surface F is scooped up by the lubricating oil scooping device 44 and scattered and supplied to the lateral feed drive shaft 64. The

  The seedling feed shaft driving means 69 is integrally rotated with the lateral feed shaft 40 on both sides of the drive claw 66 and the lateral feed body 65, which are connected to both ends of the lateral feed drive shaft 64 so as to be integrally rotatable. An operation arm 67 provided so as to be movable integrally, a return spring 68 acting on each operation arm 67, and the like are provided.

  When the seedling table 32 reaches the left and right lateral movement stroke ends, the operation arm 67 corresponding to the lateral movement stroke end enters the rotation range of the drive claw 66 and is operated as the drive claw 66 rotates. The seedling feed shaft 40 is rotationally driven by abutting the arm 67 and swinging the operation arm 67. When the drive claw 66 is detached from the operation arm 67, the operation arm 67 returns to the standby position for the restoring operation of the return spring 68.

  That is, the seedling stage driving mechanism 60 inputs the driving force of the seedling stage side output shaft 57 of the lower case portion 24a through the input shaft 61 and transmits it to the passive gear 63 to always rotate the lateral feed driving shaft 64. The lateral feed body 65 is driven by the lateral feed drive shaft 64 so as to reciprocate in the lateral direction of the traveling machine body along the lateral feed drive shaft 64, and the seedling feed shaft is driven by the lateral feed body 65. 40 is reciprocated in the horizontal direction of the traveling machine body, whereby the seedling stage 32 is reciprocated in the lateral direction of the traveling machine body. When the seedling feed shaft 40 reaches the left and right lateral movement stroke ends and the seedling placing table 32 reaches the left and right lateral movement stroke ends, the drive claw on the side corresponding to the stroke end of the seedling feed shaft driving means 69 66 and the operation arm 67 rotate the seedling feed shaft 40 by a set rotation angle set to correspond to the required seedling vertical feed amount, thereby swinging the seedling vertical feed arm 42 by a predetermined angle. Each seedling vertical feed wheel 39 is driven to rotate, and the mat-like seedlings on the seedling stand 32 are directed toward the seedling planting mechanism 31 by the seedling vertical feed wheel 39. Feed the portion corresponding to the amount of seedlings in

  As shown in FIGS. 2 and 5, a rubber cover 70 is attached to the portion of the seedling feed shaft 40 protruding from the planting mission case 24 on both sides so as to prevent mud from adhering to the seedling feed shaft 40. It is fitted.

  Each cover 70 is configured in a bellows shape so as to expand and contract in the axial direction of the seedling feed shaft 40. A protrusion 71a is provided at an end portion 71 of each cover 70 located on the end side of the seedling feed shaft 40, and the protrusion 71a enters the annular groove of the seedling feed shaft 40. Since the end portion 71 of the cover 70 is fitted to the seedling feed shaft 40 by the elastic restoring force provided for rubber, the end portion 71 located on the end side of the seedling feed shaft 40 of each cover 70 is It is connected to the seedling feed shaft 40 so as to be integrally movable and integrally rotatable. A protrusion 72a is provided at an end 72 of each cover 70 located toward the planting mission case 24, and the protrusion 72a enters the annular groove of the cylindrical portion 24c of the upper case part 24b. The end portion 72 of each cover 70 positioned toward the planting mission case 24 is fitted by the end portion 72 of the cover 70 to the cylindrical portion 24c of the upper case portion 24b by the elastic restoring force provided for the rubber. 72 is non-rotatably connected to the upper case portion 24b.

  That is, each cover 70 expands and contracts as the seedling feed shaft 40 slides, and rotates along with the seedling feed shaft 40 toward the cover end 71 as the seedling feed shaft 40 rotates. 40 is covered.

  As shown in FIG. 2 and the like, the pair of left and right couplings of the seedling stage 32 are made of metal reinforcing rods 75 arranged to reinforce the seedling feeding shaft 40 so as to be parallel or substantially parallel to the seedling feeding shaft 40. It is connected over the part 41. As shown in FIG. 3, the reinforcing rod 75 is provided with a seedling support surface 75 a, and the seedling support surface 75 a is used to turn the seedling leaves of the seedling positioned at the lower end of the seedling mount 32 and turn the trajectory of the planting claw 36. The seedling leaves are received and supported at a position retracted upward from T to prevent the seedlings from interfering with the planting claws 36 of the seedling planting mechanism 31.

  As shown in FIG. 3 and the like, a seedling stay 76 is provided above the lower end side of the seedling mount 32. As shown in FIG. 2 and the like, the seedling stay 76 is arranged so as to be positioned parallel or substantially parallel to the seedling feed shaft 40 and is connected to the pair of left and right connecting portions 41 of the seedling mount 32. 76a and a support rod 76b extending from a plurality of locations of the connecting rod 76a toward the upper end side of the seedling stage 32.

  That is, the support rods 76 b of the seedling stay 76 support the mat-like seedling floor soil portion on the seedling placing stand 32 and suppress the mat-like seedling from floating from the seedling placing stand 32. In addition, the connecting rod 76a of the seedling stay 76 connects the pair of left and right connecting portions 41 so that the connecting portion 41 of the seedling placing base 32 is less likely to be bent, so that the seedling feed shaft 40 is not easily distorted. The support strength of the seedling vertical feed shaft 40 by the connecting portion 41 is improved so as to be supported by the connecting portion 41.

Next, the oil lubrication structure of the chain case will be described.
In order to oil lubricate the bearing 12 at the upper part of the chain case, conventionally, it has been necessary to add a large amount of lubricating oil to the vicinity of the upper bearing 12. When the amount of the lubricating oil in the chain case is reduced, the upper sprocket 13 and the bearing 12 cannot be lubricated with oil, causing the oil to run out and causing wear damage. In this embodiment, the scooping plate piece 15 for scooping up the lubricating oil is caulked on the side surface of the chain 14 to form an integral structure with the chain 14.

  As shown in FIGS. 10 and 11, a planting drive case 26 that is a chain case is provided at the end of the transmission case 25 that covers the cylindrical output shaft 16 that is integral with the claw-side output shaft 56. In this planting drive case 26, the end claw side output shaft 17 connected to the cylindrical output shaft 16 is supported by the upper bearing 12, and the side planting drive shaft 18 is supported by the lower bearing 19. An end portion planting transmission device is provided in which the chain 14 is wound around the sprockets 13 and 27 that are supported and fitted to the end claw side output shaft 17 and the side planting drive shaft 18. Then, on the outer side of the chain 14, a lubricating oil scooping plate piece 15 having a U-shaped or L-shaped cross section is caulked at almost equal intervals to form a lubricating oil chain scooping device. . A plurality of the scooping plate pieces 15 for scooping up the lubricating oil may be provided at three or more locations on both outer side portions of the chain 14.

  A tensioner 77 is provided at an intermediate position between the upper and lower sprockets 13 and 27 so that the chain 14 does not loosen. The tensioner 77 is provided on a support shaft 78 or a pin with a thin steel plate 79 that is thin in the winding direction of the chain 14, and is provided on the free end side so that the pressing position can be adjusted by a bolt 80.

  When the end claw-side output shaft 17 rotates, the lubricating oil scooped up by the scooping plate piece 15 from below the lubricating oil level F1 changes its direction through the upper sprocket 13 and the upper sprocket 13 and Supplied to the upper bearing 12. This makes it possible to lower the lubricating oil level by reducing the lubricating oil level, but even if the lubricating oil falls below a predetermined level, it will not cause oil shortage and planting. The durability of the sprocket and the bearing above the transmission case 26 can be improved.

Next, a modified example of the preliminary seedling stage will be shown.
In FIG. 12, a support rod 82 that pivotally supports the second preliminary seedling stand 81 is pivoted at a position protruding from the left and right planting drive cases 26 to the left and right outwards. The support rod 83 attached to the torii form from the left and right steering handles 4 is detachably fastened so as to be fitted from above with a reverse U-shaped fastener.
In this way, if the preliminary seedling stage 81 is provided above the seedling stage 32 of the walking type rice transplanter, even if the seedling runs out, the spare seedling is at hand, so that the working machine is not stopped. Even if it is temporarily stopped, seedlings can be replenished in a short time, and work efficiency is improved.

FIG. 13 and FIG. 14 show another modified example of the reserve seedling stage.
The third preliminary seedling table 84 is provided with 16 comb rods 85 with respect to the seedling table 32 for four-row planting, and a handle 87 is attached to the center of a base rod 86 to which the comb rods 85 are attached. The hook 89 that can be taken on the partition member 88 of the seedling stage 32 is hooked on the handle 87 to hold the preliminary seedling placement part so as to be substantially horizontal.
Reference numeral 91 denotes a comb ridge holding member that is supported by each partition member 88 of the seedling table 32 and that has a holding ring 92 through which a comb ridge 85 is inserted from the tip.

The seedling table 32 is provided with a long groove 93 into which a comb rod 85 can be inserted for each item.
The long groove 93 is preferably covered with a rubber material having a cut groove corresponding to the length of the long groove 93 so that the upper surface of the rubber material is flush with the upper surface of the seedling platform 32. This is preferable because the long groove 93 is normally closed.

When using the third preliminary seedling table 84, the hook 89 attached to the partition member 88 is inserted into the holding ring 92 of the comb hook holding member 91 and positioned with the base hook 86. Lock to the handle 87. In this state, 4 seedlings are placed above the comb 85.
When seedlings are replenished when the seedlings on the seedling table 32 are reduced during the seedling planting operation, the hooks 89 are removed while the handle 87 is pushed down a little, and then the comb 87 is lifted so that the comb 85 It enters into the long hole 93 formed in the platform. As a result, the spare seedlings are naturally transferred onto the seedling placing surface of the seedling placing stand. When the handle 87 is pulled up from this state, the entire preliminary seedling can be transferred to the seedling stage. At this time, if the handle 87 is further pulled up as it is, the comb hook 85 can be pulled out from the holding ring 92 and the third preliminary seedling table 84 can be removed.

FIGS. 15 and 16 show an embodiment in which the specification is changed to a riding direction in which a walking type rice transplanter is provided with auxiliary wheels and a seat.
A caster wheel 95 is attached to the rear part of a wheel support arm 94 that can swing up and down. The base end portion of the wheel support arm 94 pivots the base end side handle rods 4a, 4a of the steering handle 4 to the connecting lower connecting portion so as to be vertically movable around the left and right horizontal axis, and the base end side handle rod 4a, A damper 96 having a cushion spring is pivotally mounted between a connecting portion connecting the upper side of 4a and the front and rear intermediate portions of the wheel support arm 94. A seat 98 is provided via a seat support member 97 detachably attached to the rear end of the wheel support arm 94.
Reference numeral 99 denotes an extension handle used when the seat 98 is attached, and is connected to a handle rod 4b inside the left and right grips 4c of the steering handle 4. The height of the extension handle 99 can be changed in three steps by extending and fixing the three cylindrical bodies with the locking pin 100 with a spring.

When the caster wheel 95 is provided, it is easy to work on a vast field. In addition, since the caster wheel 95 is provided with a seat 98 and the height of the extension handle 99 is adjusted, it is possible to drive while riding on the seat 98 while originally being a walking type specification, so that work on a long and vast field can be performed. You can go easy.
The caster wheel 95 may be provided on the left and right sides so that the rear side of the wheel support arm 94 is divided into two or the rear end of the wheel support arm 94 is branched into a T shape.

  In the above embodiment, the input sprocket 56a is formed with the groove 56c into which the pin 47 is fitted, and the pin 47 is fitted into the groove 56c. In addition, the input sprocket 56a itself has a single tip of the pin 47. Slots or through-holes having a diameter to be partially fitted may be formed, and the pin 47 may be clamped and fitted into these holes. When the boss portion 56b is not formed on the scraping device side of the input sprocket 56a, a pin may be directly fitted into a hole formed in the sprocket 56a. The groove 56c, the groove 56c, the groove hole, or the through hole formed in the boss portion of the sprocket 56a is collectively referred to as a pin fitting hole.

In addition, when the pin 47 is fitted into a caulking hole formed directly on the sprocket 56a so that the pin does not easily come off from the sprocket, the fitting cylinder 45 of the lubricating oil lifting device 44 is formed in a true cylinder shape. And what formed the groove which the end part pin fits may be used.

The lubricating oil scooped up equipment 4 4 of the lubricating oil rake plate 46, in the circumferential direction may be provided one or three or more.

  The present invention can be applied to a riding type rice transplanter as well as a walking type rice transplanter.

Side view of walking type rice transplanter Top view of walking type rice transplanter Side view at the center of the body of the seedling planting department Side view of the seedling planting part Front view of planting mechanism drive mechanism and seedling stage drive mechanism Side view of drive mechanism for planting mechanism Side view of planting mechanism drive mechanism and seedling platform drive mechanism Enlarged longitudinal front view of the lubricant scraping device Enlarged vertical side view of lubricating oil scraping device Front view of the outer chain case Vertical side view of outer chain case Rear side view of walking type rice transplanter showing first alternative embodiment of preliminary seedling platform Rear side view of walking type rice transplanter showing a second alternative embodiment of the reserve seedling platform Rear plan view of walking type rice transplanter of second alternative embodiment Side view of rear part of rice transplanter with auxiliary wheels and seat Plan view of rear part of rice transplanter with auxiliary wheels and seat

21 mission case
23 Transmission case 24 Planting mission case
24a Lower case part
24A recess
24b Upper case part
26 Planting drive case
31 Seedling planting mechanism 32 Seedling stand 44 Lubricating oil scooping device 45 Fitting cylinder 46 Lubricating oil scoop plate 47 Pin 48 Pin fitting space
54 planting drive shaft 56 output shaft 56a sprocket 56c pin fitting hole 64 lateral feed drive shaft

Claims (7)

A transmission case is extended rearward from the transmission case provided at the front of the traveling machine body, a planting mission case is connected to the rear end of the transmission case, and the planting mission case is connected to the rear end of the transmission case. The lower case part, and an upper case part that is wider than the lower case part and connected to the upper end surface of the lower case part,
Wherein the upper case portion, together with the kicking set the horizontal feed drive shaft for transverse feed drive in the lateral direction of the vehicle body the seedling stage, the lower part of the said lower case section, provided planting drive shaft for driving the seedling planting mechanism,
The even lower than the horizontal feed drive shaft and an output shaft at an upper portion in the lower case portion,
A sprocket that transmits power from the planting drive shaft to the output shaft is fixed to the output shaft, and a lubricating oil scooping device fitted to the output shaft in a state positioned next to the sprocket is attached to the output shaft. A lubrication device for a transverse feed drive device in a rice transplanter characterized by being connected. 2. The lubricating device for a lateral feed drive device in a rice transplanter according to claim 1, wherein power from the output shaft is transmitted to a planting drive case located on a lateral side of the lower case portion. A recess recessed from the side surface of the lower case portion to the inside of the case at a portion located between the output shaft and the planting drive shaft on the side surface of the lower case portion on the side where the lubricating oil scooping device is disposed The lubricating device for the transverse feed drive device in the rice transplanter according to claim 1 or 2, wherein The said lubricating oil scooping device is provided with a plurality of lubricating oil scooping plates provided in a fitting cylinder, for the transverse feed drive device in the rice transplanter according to any one of claims 1 to 3 . Lubrication device. 5. The lubricating device for a transverse feed drive device in a rice transplanter according to claim 4, wherein the lubricating oil rake plate is formed in an arch shape having a center of curvature on the rake face side. The rice transplanter according to any one of claims 1 to 5 , wherein the lubricating oil scooping device is connected to the output shaft via the sprocket so as not to slide and rotate around the output shaft. Lubricating device for the transverse feed drive device in the machine. A pin fitting hole is formed in the sprocket, and a pin fitting space is formed in a cylindrical portion of the lubricating oil lifting device fitted to the output shaft, and the pin fitting hole and the lubricating oil scraper of the sprocket are formed. 7. A lubricating device for a transverse feed drive device in a rice transplanter according to claim 6 , wherein the pins are fitted into the pin fitting space of the lifting device so that both of them rotate together.

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