JP4805789B2 - Rice transplanter seedling support structure - Google Patents

Description

  The present invention relates to a seedling support structure for a rice transplanter.

Conventionally, the upper end of the seedling platform is supported by the upper end of the seedling platform frame (Patent Document 19) standing from the planting drive case (Patent Document 16), and the lower end of the seedling platform is planted. It is supported by a guide rail (18 in the patent document) as a slide rail supported by a bracket attached to the bracket, and the working posture is set so as to reciprocate left and right. In the working posture, the posture is maintained by locking the end portion of the guide rail and the lower end portion of the seedling platform with a locking member.
Then, the locked state of the lock member is released, and the lower end portion of the seedling table is swung upward and rearward around the swing axis (Patent Document P) provided at the upper end of the seedling table frame to be in a non-working position. The configuration to switch was adopted. Thereby, in the non-working posture, the maintenance work for the lower end portion of the seedling bed can be easily performed.

JP 2006-94744 A (paragraph numbers [0044] [0045] FIG. 5)

In the case of the above-described configuration, in order to support the seedling table so as to be swingable, in addition to the original reciprocating lateral movement structure, the swinging shaft core with respect to the seedling table frame (Patent Document P) It is necessary to form a structure that swings around in an excessively heavy state, and the burden on the structure is large.
In addition, switching the seedling platform to a non-working position requires the operator's own operating force, and it is difficult to introduce appropriate operating tools, which increases the human burden. There was also.

  The present invention aims at simplifying the structure, reducing the burden of man-made work, and reducing the burden on manufacturing while ensuring the state in which the maintenance work of the lower end portion of the seedling bed is easy to perform in the seedling bed support structure of the rice transplanter. Yes.

(Constitution)
The first feature of the present invention is that the seedling platform is supported by a sliding rail so as to be movable along the sliding rail, and the sliding is performed by moving the seedling platform along the seedling surface of the seedling platform. Rutotomoni with a non-working position and the switchable seedling platform retreating operation mechanism away from the rail upward, moved and adjusted in the direction of access and the seedling platform and the slide rail with respect to the locus of planting claw integrally Equipped with a seedling harvesting adjustment mechanism that adjusts the seedling harvesting amount,
The seedling setting table and the slide rail in the working posture are moved together to the upper holding posture along the seedling setting surface of the seedling setting table by the seedling amount adjusting mechanism, and the seedling setting table is The seedling amount adjustment mechanism functions as the seedling bed retracting operation mechanism by moving the slide rail downward by the seedling amount adjustment mechanism and keeping it away from the seedling table while maintaining the holding posture. Then, the seedling bed is configured to be switched to the non-working posture .

(For work)
According to the first feature of the present invention, since the seedling platform is moved along the seedling surface of the seedling platform and switched to the non-working position, it is not necessary to swing the seedling platform, and thereby It is not necessary to adopt a structure that can swing by newly providing a dynamic shaft core.
As in Patent Document 1, the bottom end of the seedling platform is moved backward when the seedling platform is moved to a non-working posture when the lower end of the seedling platform is swung back upward. Therefore, when work is performed from the rear of the seedling planting device, the lower end of the seedling platform may interfere with the work. According to the first feature of the present invention, the seedling platform is moved to a non-working position by moving the seedling platform up along the seedling surface of the seedling platform, so that the lower end of the seedling platform is rearward When the work is performed from the rear of the seedling planting device, the lower end of the seedling platform does not hinder the work.
(effect)
According to the first feature of the present invention, the seedling amount adjustment mechanism and the seedling platform retracting mechanism both move the seedling platform in a state along the seedling platform, so that the seedling platform is supported. It is possible to combine a mechanism that moves along the seedling surface. Due to the shared use, the device configuration can be simplified.
Moreover, in the same manner as the seedling amount adjustment mechanism, in the seedling table retracting operation mechanism, the seedling setting table is moved along the seedling setting surface. It is possible to follow the seedling table retracting operation mechanism, so that it is not necessary to introduce a new mechanism, and the device configuration can be simplified accordingly.
For example, it can be configured to move the seedling platform to a non-working position by operating the operation tool (lever, etc.) of the seedling adjustment mechanism, so the operator can hold the seedling platform directly by hand. It becomes possible not to move.

  As shown in FIG. 1, an engine 3 and a transmission case 4 are provided at the front of the airframe supported by the front wheels 1 and the rear wheels 2, and a four-link type link mechanism 6 is provided at the rear of the airframe by a hydraulic cylinder 14. The seedling planting device 7 is supported by the link mechanism 6 so as to be movable up and down, and a riding type rice transplanter is configured.

  As shown in FIGS. 1 and 2, the seedling planting device 7 is configured in a six-row planting type, and is driven to rotate right and left of one feed case 15, three transmission cases 8, and the transmission case 8. A rotating case 9 supported freely, a pair of planting arms 10 supported at both ends of the rotating case 9, a grounding float 11, a seedling setting table 12 having six sets of seedling setting surfaces 12a, and a seedling setting table 12 A vertical feed mechanism 13 and the like for feeding the placed seedling to a seedling outlet 27e (see FIGS. 3 and 4) of the slide rail 27 are provided. A feed case 15 is supported at the lower part of the rear portion of the link mechanism 6 so as to be able to roll around the front and rear axis, and the power of the engine 3 is transmitted to the feed case 15 via a planting clutch (not shown) and the PTO shaft 18. ing. A lateral support frame 16 is fixed to the feed case 15, and the three transmission cases 8 are fixed to the support frame 16 in a cantilever direction so as to transmit the feed case 15 and the three transmission cases 8. A shaft 17 is connected.

  As a result, as shown in FIGS. 1 and 2, the power of the engine 3 is transmitted from the PTO shaft 18 to the feed case 15, and the seedling table 12 is driven to reciprocate laterally, so that the power of the engine 3 is transmitted. The shaft 17, the transmission case 8, and a transmission chain (not shown) disposed inside the transmission case 8 are transmitted to the rotary case 9, and the rotary case 9 is driven to rotate, so that the seedling takeout port of the slide rail 27 is obtained. 27e (see FIGS. 3 and 4), the planting arm 10 alternately takes out the seedlings and plantes them on the rice field.

  As shown in FIG. 1, three feeding parts 19 corresponding to two planting strips are fixed to the rear side of the driver's seat 5, and a hopper 20 that is made of a transparent resin and stores fertilizer is provided with three feeding parts. 19 is fixed. Six groovers 21 that form grooves on the lateral sides of the seedlings (planting strips) planted by the planting arm 10 are prepared corresponding to each of the planting strips and fixed to the grounding float 11. Two groovers 21 and one feeding portion 19 are connected via a hose 22. A blower 23 is provided on the lower side of the driver seat 5, and pipes (not shown) extend to the left and right along the blower 23 or the feeding part 19. What is the part to which the hose 22 is connected in the feeding part 19? An air blowing port (not shown) is formed on the opposite side, and the air blowing port of the feeding portion 19 is inserted into the pipe.

  Thereby, as the seedling base 12 is driven to reciprocate and laterally feed, the rotary case 9 is driven to rotate, and the planting arm 10 is inserted from the seedling outlet 27e (see FIGS. 3 and 4) of the slide rail 27. The planting claws 10A attached to the take-out alternately take out the seedlings and plant them on the rice field. At the same time, the fertilizer of the hopper 20 is fed out from the feeding unit 19 by a predetermined amount. High-pressure wind from the blower 23 is supplied to the hose 22, and fertilizer is supplied to the grooving device 21 through the hose 22 by the high-pressure air, and the fertilizer is fed into the groove formed on the rice field by the grooving device 21. It is.

Next, the reciprocating lateral feed drive structure of the seedling bed 12 and the drive structure of the vertical feed mechanism 13 will be described.
As shown in FIGS. 2, 3, and 8, the sliding rail 27 is supported in the left-right direction across the transmission case 8, and the lower portion of the seedling support 12 is supported along the sliding rail 27 so as to be reciprocally movable laterally. Yes. Right and left support frames 28 extend upward from the right and left side portions of the support frame 16, and a support frame 29 is attached over the upper portions of the right and left support frames 28. A roller 31 is supported on a rod 30 fixed to a plurality of locations of the support frame 29 so as to be rotatable around an axis in the vertical direction, and a support frame 32 having a U-shaped cross section is fixed along the back surface of the upper part of the seedling bed 12. The roller 31 is inserted inside the support frame 32. Thereby, the seedling base 12 is supported along the slide rail 27 and the roller 31 so as to be reciprocally movable laterally.

  As shown in FIGS. 2, 3, and 8, the spiral shaft 33 extends from the feed case 15, and the end of the spiral shaft 33 is rotatably supported by the support frame 16 via the support bracket 35. A feed member 34 is externally fitted to 33. A support frame 36 is fixed over the entire width of the seedling platform 12 on the back surface near the top and bottom center of the seedling platform 12 (see FIG. 3), and a connecting member 37 and a feed member 34 fixed to the support frame 36 are provided. The connection member 38 and the bolt 39 are connected. As a result, the helical shaft 33 is rotationally driven by the power of the feed case 15, and the feed member 34 is driven to reciprocate and laterally feed along the helical shaft 33, and the seedling bed 12 is moved to the slide rail 27 and the roller 31. A reciprocating lateral feed is driven along.

  As shown in FIGS. 2, 3, and 9, the vertical feed mechanism 13 is configured to rotationally drive a wide feed belt, and is provided on each of the seedling raising surfaces 12 a of the seedling raising base 12. One drive shaft 40 is installed over the lower part of the vertical feed mechanism 13, and the drive shaft 40 is rotatably supported by support members 41 fixed at four locations on the back surface of the seedling base 12. An input arm 40a is externally fitted at a predetermined position of 40 via a one-way clutch (not shown). As shown in FIG. 2, the longitudinal feed shaft 43 extends from the feed case 15, and the end of the longitudinal feed shaft 43 is rotatably supported by the support frame 16 via the support bracket 42. The two drive arms 43a are fixed to each other. The input arm 40a of the drive shaft 40 is positioned between the two drive arms 43a of the vertical feed shaft 43, and the vertical feed shaft 43 is rotationally driven by the power of the feed case 15.

  As a result, as shown in FIGS. 2, 3, and 8, when the seedling table 12 is reciprocally driven laterally along the slide rail 27 and the roller 31 and reaches the stroke end of the reciprocating lateral feed drive, the drive shaft 40 is driven. The input arm 40a reaches the position of one drive arm 43a of the longitudinal feed shaft 43, and the input arm 40a of the drive shaft 40 is rotationally driven by a predetermined angle by the one drive arm 43a of the longitudinal feed shaft 43, thereby causing a longitudinal feed mechanism. 13 is rotated by a predetermined amount, and the seedling placed on the seedling table 12 is sent to the seedling outlet 27 e of the slide rail 27.

Next, the structure near the slide rail 27 will be described.
As shown in FIGS. 4 to 6, a support rod 25 is supported by a bracket 24 fixed to the lateral side surface of the transmission case 8 so as to be slidable up and down, and a U-shaped engagement portion 25 a is formed above the support rod 25. It is fixed. A support arm 26 that can swing and be fixed up and down around the horizontal axis P1 of the transmission case 8 is engaged with an engaging portion 25a of the support rod 25, and the position of the support rod 25 is determined by the support arm 26. .

  As shown in FIG. 13 and FIG. 14, a slide rail 27 made of an aluminum drawing material is provided, and a pipe section 27 a having a quadrangular section, and the entire length of the slide rail 27 extending from the pipe section 27 a. The step part 27c formed over the entire length of the slide rail 27 on the upper part of the receiving part 27b and the seed part 12 of the pipe part 27a, and the opposite part of the pipe part 27a on the opposite side of the seed part base 12 The slide rail 27 is configured with ribs 27d formed over the entire length of the slide rail 27, notched seedling outlets 27e formed at six locations of the receiving portion 27b, and the like.

  As shown in FIGS. 4, 13, and 14, a connecting member 44 having a T-shaped cross section is fixed to the lower back surface of the seedling platform 12 over the entire width of the seedling platform 12. The sliding member 45 and the engaging member 46 are fixed to the lower surface and the upper surface as follows. The sliding member 45 includes a substrate portion 45a, a vertical wall portion 45b, two bolt holes 45c, one engagement protrusion 45d, and the like, and is integrally formed of synthetic resin. The engaging member 46 is formed of a synthetic resin in an L-shaped cross section, and includes a notch 46a and a shallow recess 46b around the notch 46a.

  As shown in FIGS. 13 and 14, the engagement protrusion 45 d of the sliding member 45 is inserted into the opening 44 a of the connecting member 44, and the sliding member 45 is attached to the lower surface of the four locations of the connecting member 44. The bolt 47 is inserted into the one bolt hole 45c of the moving member 45 from below, and the bolt 47 is inserted into the opening 44b of the connecting member 44 from below. The support member 41 is extended downward from the support member 41 and bent at a right angle so that the opening 41c of the extension 41b of the support member 41 is positioned at the opening 44b of the connecting member 44. The extended portion 41 b of 41 is placed on the upper surface of the connecting member 44, and the bolt 47 is inserted into the opening 41 c of the support member 41 from below.

  As shown in FIG. 13 and FIG. 14, a metal sliding plate 59 is prepared which covers the entire length of the sliding rail 27 and has high wear resistance, and the sliding plate 59 is a pipe portion of the sliding rail 27. It is fixed to the upper surface of 27a with screws 60. With the base plate portion 45a of the sliding member 45 placed on the pipe portion 27a (sliding plate 59) of the sliding rail 27, the bolt 47 is inserted into the notch portion 46a of the engaging member 46, and the engaging portion 46 is engaged. The member 46 is attached to the upper surface of the connecting member 44, the nut 48 is fastened to the bolt 47, and the sliding member 45, the engaging member 46, and the extended portion 41 b of the support member 41 are fixed to the connecting member 44. Yes. In this case, when the nut 48 is tightened to the bolt 47, the nut 48 enters the recess 46b of the engagement member 46. Therefore, even if the nut 48 is loosened slightly, the recess 46b of the engagement member 46 is caught by the nut 48. The engaging member 46 does not fall off easily.

  In this state, as shown in FIG. 13 and FIG. 14, the substrate portion 45 a of the sliding member 45 is placed on the pipe portion 27 a (sliding plate 59) of the sliding rail 27, and the substrate portion 45 a of the sliding member 45. Is in contact with the rib 27d of the slide rail 27 (or slightly apart from the rib 27d of the slide rail 27), and the vertical wall portion 45b of the slide member 45 is in contact with the step portion 27c of the slide rail 27. . The engaging member 46 is in contact with the lateral surface portion and the lower end portion of the rib 27 d of the slide rail 27. As a result, the sliding member 45 and the engaging member 46 slide along the sliding rail 27 so that the lower portion of the seedling bed 12 is supported by the sliding rail 27 through the sliding member 45 so as to be reciprocally movable. Therefore, the state where the lower part (sliding member 45 and engaging member 46) of the seedling bed 12 with respect to the sliding rail 27 moves upward, rightward and leftward in FIG. .

Next, the space member 49 that fills the space between the adjacent sliding members 45 will be described.
As shown in FIG. 9, since the length of the sliding member 45 is shorter than that of the sliding rail 27, it is connected to the pipe portion 27 a (sliding plate 59) of the sliding rail 27 between the adjacent sliding members 45. A space is formed between the member 44 and this space is directed obliquely to the lower left in FIG. As shown in FIGS. 9, 10, and 14, a space member 49 made of a sponge material is prepared so as to fill a space between adjacent sliding members 45 (so as to span adjacent sliding members 45). The space member 49 is fixed to the lower surface of the connecting member 44 by the connecting clip 50. In this state, both end portions of the space member 49 are close to the end portions of the adjacent sliding members 45, and the lower surface of the space member 49 is the pipe portion 27a (sliding plate 59) of the sliding rail 27. It is in a state of being substantially in contact with the upper surface.

  As shown in FIGS. 9, 10, and 12, the cylindrical plug member 51 is located at a substantially central position of the space member 49 (the partition portion 12 b located between the adjacent seedling placing surfaces 12 a in the seedling placing base 12). It is inserted from below into an opening (not shown) of the connecting member 44, and the upper surface of the space member 49 is pressed against the lower end of the plug member 51. A cylindrical plug member 52 (corresponding to an inlet) is fixed to the partition portion 12b of the seedling platform 12 on the seedling surface 12a side of the seedling platform 12, and a hose 53 ( Equivalent to the supply channel).

  As shown in FIGS. 9 to 12, a rubber cap 61 is usually attached to the plug member 52 to close the plug member 52. The rubber cap 61 is integrally formed with a belt-like fixing belt portion 61A, and a fastening portion 61B formed at an end portion of the fixing belt 61A is fastened to a fixing nut 62 provided above via a screw 63. Therefore, even when the rubber cap 61 is removed from the plug member 52, there is no difficulty in where to place the rubber cap 61, and there is no problem with the completion.

  In the configuration as described above, by removing the rubber cap 61, the lubricating oil (corresponding to the lubricant) can be supplied from the seedling placing surface 12a side of the seedling placing base 12 to the plug member 52. The space member 49 is supplied to the space member 49 via the hose 53 and the plug member 51, and the lubricating oil is impregnated in the space member 49 in the vicinity of the plug member 51 (soaked and held).

  As a result, as shown in FIGS. 9 and 10, the seedling table 12 reciprocates horizontally along the slide rail 27, so that the lubricating oil impregnated in the space member 49 in the vicinity of the plug member 51 is It will be in the state apply | coated to the pipe part 27a (sliding plate 59) of the sliding rail 27. FIG. At the same time, the seedling bed 12 reciprocally moves laterally along the slide rail 27, so that the sliding member 45 reaches the range where the lubricating oil is applied (the sliding member falls within the range where the lubricating oil is applied). 45), the lubricating oil is also applied to the sliding member 45, the sliding member 45 (substrate portion 45a) and the sliding rail 27 (pipe portion 27a) (sliding plate 59). The lubricating oil enters the sliding contact surface between the two.

The seedling amount adjustment mechanism A will be described.
A seedling amount adjusting lever 54 is provided in the seedling planting device 7, and the posture of the support arm 26 is changed around the horizontal axis P1 by the seedling amount adjusting lever 54 as shown in FIGS. By changing the attitude of the support arm 26 around the horizontal axis P1, the positions of the support rod 25, the slide rail 27, and the seedling bed 12 can be changed in the vertical direction. . Thus, by changing the position of the slide rail 27 in the vertical direction, the position of the seedling outlet 27e of the slide rail 27 with respect to the trajectory of the planting arm 10 is changed in the vertical direction. The amount of seedlings to be taken out can be changed.

  Next, the working posture in which the seedling bed 12 is supported by the sliding rail 27 so as to be reciprocally movable laterally through the sliding member 45, and the lower part of the seedling bed 12 and the sliding member 45 are rearward and upward from the sliding rail 27. The structure of the seedling platform retraction operation mechanism B that changes the seedling platform 12 to the non-working posture moved to is described.

  The seedling table retracting operation mechanism B is also used as a member constituting the seedling collection amount adjusting mechanism A. That is, as shown in FIG. 7, the seedling setting base 12 and the slide are moved by lifting the seedling setting table 12 by moving the seedling setting adjustment lever 54 beyond the seedling setting adjustment range (rotation locus of the planting claw). The moving rail 27 can be switched to the non-working posture.

  As shown in FIGS. 4 and 7, a plate-shaped seedling amount lever guide 70 is provided for the seedling amount adjustment lever 54. The seedling amount lever guide 70 has a seedling amount adjustment range. A plurality of engagement grooves 70a for setting are provided. The guide groove of the seedling collection lever guide 70 is extended to the maintenance position corresponding to the non-working posture, and the engagement groove 70b is formed corresponding to the maintenance position.

Next, the structure which maintains the seedling bed 12 in a non-working posture will be described. As shown in FIGS. 4-6, the support rod 58 which maintains the seedling base 12 in a non-working posture is provided. The support rod 58 has a channel shape in which both ends of a single rod are bent. The lower end bent portion located below both bent portions of the support rod 58 is swingably supported by support members 41, 41 that support the longitudinal feed drive shaft 40 at both ends of the seedling bed 12. On the other hand, an upper end bent portion positioned above is provided on a support frame 36 that is installed and fixed over the support member 41 across the rear left and right ends of the seedling bed 12, and the bracket 55 is detachable from the support bracket 55. It is attached to. Therefore, when the support rod 58 is removed against the clamping force of the sandwiching bracket 55, the support rod 58 can swing up and down around the bent portion at the lower end.
A plate-like bracket 58a is extended and fixed at an intermediate position of the support rod 58, and is provided so as to function when the support rod 58 is attached and fixed by a bolt 64 described later.

  On the other hand, as shown in FIGS. 4 to 6, in order to protect both side ends of the slide rail 27 from the left and right ends of the support frame 16, a round bar-like protective frame 65 is extended rearward. A fixing bracket 57 for fixing the support rod 58 to the protective frame 65 is attached and fixed. The fixing bracket 57 is provided with a sandwiching bracket 56 for receiving the upper end bent portion of the support rod 58 and a bolt 64 for fixing the mounting.

With the above configuration, the seedling setting lever 12 and the slide rail 27 are lifted to the maintenance position 70b by the seedling adjustment lever 54 and switched to the non-working position, and then the upper bent portion of the support rod 58 is sandwiched between the brackets. The support rod 58 is fixed by fixing the plate-like bracket 58a with the bolt 64 while holding it in the holding bracket 56 of the fixing bracket 57 and holding it.
By fixing the support rod 58, the seedling base 12 is held in the non-working posture by the support rod 58.

  After the holding posture is established, as shown in FIG. 6, the engaging member 46 is removed, the linkage between the seedling placing base 12 and the slide rail 27 is released, and the seedling amount adjusting lever 54 is moved to the seedling amount. By returning to the adjustment range, the slide rail 27 can be returned to a predetermined position below the seedling table 12. This operation enables maintenance work on the sliding member 45 and the like.

  On the other hand, as shown in FIGS. 4 and 8, as a lateral feed drive structure for the seedling platform 12, a connecting member 37 attached to the back surface of the seedling platform 12 and a connecting member 38 attached to the spiral shaft 33. Are connected via a bolt 39. When forming a hole through which the bolt 39 is inserted into the connecting member 37, the hole 37a is formed to be long in the vertical direction. Even if the seedling raising base 12 is lifted by the seedling amount adjusting lever 54 by the formation of the long hole 37a, the connecting member 37 maintains the linkage with the spiral shaft 33 that does not lift up, and the seedling placing base 2 and Lift up.

  Similarly to the connection member 37, the support frame 32 attached to the back surface of the seedling platform 12 is lengthened to be fitted to the roller 31 by the amount of movement of the seedling platform 12 to increase the length of the seedling platform 12. Even if it moves upward, it is configured to maintain the state of being fitted to the roller 31.

  Next, the structure of the extension seedling raising table 67 will be described. As shown in FIGS. 15 to 17, an extended seedling support base 67 is slidably inserted into the top end of the seedling support base 12 for each strip. The seedling support base 67 is extended when the extended seedling support base 67 is extended. The entire setting table has a length that allows two mat-like seedlings to be placed and accommodated in a column. The extension seedling bed 67 is formed in a substantially comb-like shape by integrally forming a main body portion 67a that is formed to be wide on the left and right sides and a plurality of rib portions 67b that are formed in a rod shape with a resin material.

  As shown in FIGS. 15 to 17, the main body 67 a is inserted and supported between a support frame 69 horizontally connected to the back of the seedling platform and the lower surface of the seedling platform, and the rib portion 67 b is an upper surface of the seedling platform 12. It is supposed to be stacked on. A large number of vertical ribs 68 are formed on the upper surface of the seedling table 12 to facilitate the downward sliding of the mat-shaped seedlings placed thereon, and the rib portion 67b of the extended seedling table 67 is formed in an inverted U shape. A plurality of ribs 67b in the extended seedling table 67 are externally fitted to the vertical ribs 68 of the seedling table 12 from above. As a result, the extension seedling table 67 is positioned to the left and right, and can slide out and retreat in a straight line without any distortion.

As shown in FIGS. 17 to 19, the shape of the tip end a extending in a cantilevered manner in the rib portion 67 b is an inverted U shape, the lower end side of the side wall portions 67 c and 67 c, and the ceiling wall tip 67 d. It has a shape cut obliquely so as to protrude toward the tip side.
Conventionally, the rib portion 67b is cut along a plane perpendicular to the axial direction. However, as described above, the configuration of cutting obliquely can reduce inconvenience at the time of reserve seedling replenishment.

  That is, the seedling scooping plate is lifted upward while placing the seedling scooping plate on the seedling scooping board 67 and placing the seedling scooping plate on the extended seedling placing stand 67 while supplying the spare seedling to the seedling placing surface 12a. In this case, the convex portion (groove portion) on the back surface of the seedling scooping plate can be prevented from being caught on the ceiling wall tip 67d of the rib portion 67b.

[Another Embodiment of the Invention]
(1) The another implementation structure about the vertical rib 68 of the seedling raising surface 12a is demonstrated. As shown in FIGS. 22 and 23, a stepped surface 68a for reducing the height is formed at the upper end portion of the vertical rib 68 provided on the seedling setting surface 12a.
By providing such a stepped surface 68a, the cantilevered tip of the rib portion 67b of the extended seedling table 67 in the state where the rib portion 67b of the extended seedling table 67 is covered with the vertical rib 68 becomes the inclined surface 68a. Since it is in a state of being dropped and the cantilevered tip of the rib portion 67b can be prevented from protruding from the upper surface of the vertical rib 68, it is possible to suppress the hooking with the rib portion 67b of the seedling scooping plate.

( 2 ) The shape of the rib portion 67b of the extended seedling support 67 may be as follows. As shown in FIGS. 20 and 22, the tip a extended in a cantilever manner in the rib portion 67 b of the extended seedling table 67 is bent in a direction close to the vertical rib 68 of the seedling table 12. Also good. Thereby, it can suppress that the front-end | tip a warps in the direction spaced apart from the vertical rib 68, and the hook of a seedling scoop board can also be suppressed also in this surface.

Overall side view of riding rice transplanter Top view of seedling planting device Front view of the seedling table and the vicinity of the slide rail Side view showing a state where the seedling platform is set to the working posture Side view showing a state where the seedling platform is set to a non-working posture The side view which shows the state which separated the sliding rail from the seedling stand from the state of FIG. Front view showing seedling amount lever guide Front view of the vicinity of the spiral shaft and feed member Longitudinal front view of the vicinity of the slide rail, slide member, engagement member, and space member Vertical side view of the seedling table, slide rail, space member, plug member and hose Top view showing plug member A vertical bottom view showing a state before the plug member is mounted at a predetermined position of the seedling platform Longitudinal side view of the vicinity of the sliding rail, sliding member and engaging member An exploded perspective view of the seedling table, the sliding member, the engaging member, the space member, and the vicinity of the connecting member Rear view of the seedling platform with the extension seedling platform installed Rear view showing the state before the extension seedling table is attached to the seedling table Longitudinal side view showing the state where the extension seedling table is attached to the seedling table Bottom view showing a state where the rib part of the extension seedling table is externally fitted to the vertical rib of the seedling table The perspective view which shows the front-end | tip part of the rib part of the extension seedling setting stand Longitudinal side view showing a state in which an extended seedling base formed by bending the tip of the rib portion is attached to the seedling base. The perspective view which shows the state which bent and formed the front-end | tip part of the rib part of the extension seedling setting stand A longitudinal section showing a state where a step is formed at the upper end of the vertical rib of the seedling platform, and the ribbed portion of the extended seedling platform is externally fitted to the stepped portion. Side view The perspective view which shows the state which formed the level | step-difference part in the upper end part of the vertical rib of a seedling base, and externally fitted the rib part of the extension seedling base to the level | step-difference part

10A Planting claws 12 Seedling table 12a Seedling table surface of seedling table 27 Slide rail A Seedling amount adjustment mechanism B Seedling table retraction operation mechanism

Claims (1)

A working posture for supporting the seedling platform on the slide rail so as to be movable along the sliding rail, and a non-working posture in which the seedling platform is moved upward along the seedling surface of the seedling platform and separated from the sliding rail. Rutotomoni comprising a switchable seedling platform retreating operation mechanism bets, said a seedling platform and the slide rail is moved adjusted to the direction toward or away from the locus of planting claw integrally adjusting the seedling-up amount With a seedling adjustment mechanism,
The seedling setting table and the slide rail in the working posture are moved together to the upper holding posture along the seedling setting surface of the seedling setting table by the seedling amount adjusting mechanism, and the seedling setting table is The seedling amount adjustment mechanism functions as the seedling bed retracting operation mechanism by moving the slide rail downward by the seedling amount adjustment mechanism and keeping it away from the seedling table while maintaining the holding posture. And the seedling support structure of the rice transplanter configured so that the seedling support can be switched to the non-working posture .

Images