JP2015223156A - Preliminary seedling frame of seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter capable of reducing labor and time required for switch operation of preliminary seedling frames, and performing posture change of the preliminary seedling frames and keeping a balance by moving a center of gravity of a machine body at a sloping land or the like.SOLUTION: The seedling transplanter includes a planting device 5 provided at a rear part of a travel vehicle body 2 via a lifting/lowering link mechanism 4 and can be switched between: a stacked form A in which preliminary seedling mounts 6 with preliminary mat seedlings mounted thereon are stacked in vertical plural stages on a front side of the travel vehicle body 2; and a developed form B in which the preliminary seedling mounts are arranged front and rear. In linkage with lifting/lowering of the planting device 5 by the lifting/lowering link mechanism 4, the preliminary seedling mounts 6 are switched to the stacked form A or developed form B. When an inclination sensor 7 detects a front lifting inclination of the travel vehicle body 2 and a lifting/lowering sensor 8 detects the planting device 5 positioned at a lifted position, a drive motor 9 switches the preliminary seedling mounts 6 to the developed form B.

Description

  This invention arranges a spare seedling frame on which a mat seedling is mounted in the front part of a seedling transplanter vehicle body, and switches the standby seedling frame to a vertically stacked form or a deployed form arranged in the front-rear direction so that a heavy mat seedling can be formed. It is easy to carry by loading and storing, and to facilitate replenishment of seedlings to the planting device part while taking out the mat seedlings from each preliminary seedling stage.

  A technique is known in which a mat seedling is mounted in advance on the seedling transplanter vehicle body, and a spare seedling frame is switched to a stacked form, a deployed form, or the like (see, for example, Patent Document 1).

JP2013-243946A

  In the conventional technique, since the reserve seedling frame is moved manually, the operator's operation force and operation time are required, and the work efficiency is lowered. In addition, on slopes such as auxiliary doorways, the center of gravity movement of the seedling transplanter is large and abrupt, so it is difficult to handle manually.

  According to the first aspect of the present invention, a planting device (5) is provided at the rear portion of the traveling vehicle body (2) via the lifting link mechanism 4, and a spare mat seedling is loaded on the front side of the traveling vehicle body (2). In the seedling transplanting machine configured to be switchable between a stacked form (A) in which the preliminary seedling stage (6) is stacked in a plurality of upper and lower stages and an unfolded form (B) arranged in the front and back, a planting device by the lifting link mechanism 4 ( In conjunction with the raising and lowering of 5), the preliminary seedling stage (6) is switched to the stacked form (A) and the developed form (B), and the seedling transplanter has a preliminary seedling frame configuration.

  When the seedling transplanter is driven to perform seedling planting work by the planting device (5), the preliminary seedling platform (6) on which the mat seedling is previously mounted is stacked in a vertically stacked manner. In (A), on the rear side of the vehicle body (2), the planting device (5) is lowered by the elevating link mechanism 4 and lowered onto the soil surface to perform the seedling planting work state. It is in. If the seedlings supplied to the planting device (5) are reduced by the operation, the driver takes out the spare mat seedlings loaded on the preliminary seedling mount (6) on the front side of the machine body, and rear planting devices ( Replenish to 5) and continue seedling planting work.

  In addition, after planting the seedling, when the planting device (5) is raised and the traveling vehicle body (2) is simply moved and moved, the planting device (5) is not connected via the lifting link mechanism 4. Raise until the seedling planting work posture, and make it easier to travel.

  Then, in conjunction with the raising of the planting device (5) by the lifting link mechanism 4, a part of the preliminary seedling platform (6) in the stacked form (A) is moved to the front side, so that the front and back side deployed form Switching to (B) is possible.

  Furthermore, when it immediately shifts from the unfolded form (B) of the preliminary seedling stage (6) to the starting position for seedling planting work, the planting device (5) is operated by operating the lifting link mechanism (3). By moving down to the planting work state, the preliminary seedling stage (6) is moved from the deployed form (B) to the stacked form (A) in conjunction with this, so that the form suitable for the seedling planting work is obtained. be able to.

  The invention described in claim (2) is provided with an inclination sensor (7) for detecting the longitudinal inclination of the traveling vehicle body (2) and an elevation sensor (8) for detecting elevation of the planting device (5). In addition, an elevating cylinder (3) or a drive motor (9) for switching the preliminary seedling mount (6) between the stacked form (A) and the deployed form (B) is provided, and the tilt sensor (7) is provided for the traveling vehicle body (2). And when the lifting sensor (8) detects that the planting device (5) is in the raised position, the preliminary seedling platform (6) is expanded (B). It is set as the reserve seedling frame of the seedling transplanter of Claim 1 characterized by the above-mentioned.

  When the seedling transplanter travels in the field and performs seedling planting work, the planting device (5) by the lifting link mechanism 4 is used for raising and lowering the preliminary seedling placing stand (6) by using the lifting drive force. It can switch to (A) and expansion | deployment form (B).

  In addition, when the traveling vehicle body (2) is greatly inclined in the front-rear direction, for example, when entering or leaving a farm field across the ridge, the inclination sensor (7) detects this inclination. At this time, if the raising / lowering position of the planting device (5) is detected by the raising / lowering sensor (8), the raising / lowering link mechanism 4 Is moved to the front side of the machine body and switched to the unfolded form (B). As a result, when the traveling vehicle body (2) is inclined forward and the rear planting device (5) is in the same form as the raised position or the raised position, the preliminary seedling platform (6) is moved to the traveling vehicle body (6). By moving to the front side of 2) and switching to the deployment mode (B), and maintaining the front-rear weight balance of the aircraft, a safe posture of the aircraft is maintained.

  The invention according to claim 3 is provided with a drive motor (9) for switching the preliminary seedling stage (6) between a stacked form (A) and a developed form (B), and the drive motor (9) is operated to make a spare. The switch (10) for switching between a stacked configuration (A) where the seedling stage (6) is positioned on the front side of the aircraft and a rear deployment mode (C) positioned on the rear side of the aircraft is provided. It is a reserve seedling frame of the seedling transplanting machine described in 2.

  The seedling transplanter is operated by lifting / lowering operation of the lifting / lowering link mechanism 4 that lifts and lowers the planting device (5) in the field as in the seedling planting operation, and when entering / leaving the field, the lifting / lowering link mechanism. 4 or the drive motor (9) can be used to switch the preliminary seedling stage (6) from the stacked form (A) to the unfolded form (B), but this preliminary seedling stage (6) is moved to the rear side. Then, when switching to the rear deployment mode (C), the changeover switch (10) is operated to operate the drive motor (9).

  In this way, by switching the preliminary seedling stage (6) from the position of the front deployment mode (A) or the stacked configuration (B) to the rear deployment mode (C), these deployment configurations (B) or Work materials such as mat seedlings and fertilizer bags placed in the stacked form (A) can be placed on the upper surface of the spare seedling stand (6) and conveyed and guided in the front-rear direction, thereby improving work efficiency. .

  According to a fourth aspect of the present invention, a start assist mechanism for starting an engine (11) provided in the traveling vehicle body (2) when the preliminary seedling stage (6) is rotated forward in the deployed form (B). The spare seedling frame of the seedling transplanting machine according to any one of claims 1 to 3, wherein 12) is driven.

  The preliminary seedling stage (6) can be moved from the stacked form (A) to the front deployed form (B) by moving in the front-rear direction by an electric motor (9) by manual operation or switch operation. At this time, the start assist mechanism (12) is driven in conjunction with the movement of the preliminary seedling stage (6) to the deployed form (B) to start the engine (11) of the traveling vehicle body (2).

  According to a fifth aspect of the present invention, the preliminary seedling stage (6) is moved from the stacked form (A) to the front side when a presser handle (13) provided at the front portion of the traveling vehicle body (2) is rotated to the front side. The spare seedling frame of the seedling transplanting machine according to any one of claims 1 to 4, wherein the seedling transplanting machine is configured to be operable in an unfolded form (B) that descends to a lower part.

  When the preliminary seedling stage (6) is moved to the unfolded configuration (B) by manual operation, the operator rotates the pressing handle (13) at the front end of the vehicle body (2) to the front side, It is possible to switch from A) to the expanded form (B).

  According to the sixth aspect of the present invention, on the left and right inner wall surfaces of the seedling receiving surface of the preliminary seedling platform (6), an inclined surface (14) inclined so as to project inward toward the rear side, and the inclined surface ( 14) The spare seedling frame for a seedling transplanting machine according to any one of claims 1 to 5, wherein a detent surface (15) is formed by cutting off the rear end at a steep angle.

  As described above, the preliminary seedling stage (6) is switched to the unfolded form (B) and protrudes to the front side of the traveling vehicle body (2), and the mat seedling is placed from the upper surface of the front end of the preliminary seedling stage (6). Then, it is slid to the rear side and is placed and guided to the upper surface of the rear seedling stand (6).

  In this mat seedling sliding guide, the left and right side surfaces of the mat seedling are guided by the inclined surfaces (14) of the left and right inner wall surfaces of the preliminary seedling mount (6), and the left and right widths of the preliminary seedling mount (6) are While being guided to a position closer to the center, it is moved onto the rear surface of the preliminary seedling stage (6).

  When the mat seedling front end surface, which is the front end portion of the mat seedling supplied from the front side of the traveling vehicle body (2), passes the rear end of the inclined surface (14), the left and right end portions of the rear end surface are inclined surfaces ( 14) The mating seedling is stopped from moving to the front side by being engaged with the return stop surface (15) on the rear side of the return protrusion at the rear end. Regardless of whether the seedling transplanter is running, stopped, etc., or whether the preliminary seedling platform (6) is tilted or oscillated, the mat seedling can be mounted and supplied to the preliminary seedling platform (6) smoothly and accurately. Let me do it.

  According to the first aspect of the present invention, when the elevating link mechanism 4 is raised by the elevating link mechanism (3) for elevating the planting device (5), the preliminary seedling stage (6) is deployed in the front-rear direction (B). When the traveling vehicle body (2) is moved to the edge of the auxiliary end by switching to, the auxiliary seedling stage (6) can be easily protruded to the outside of the field, and the mat seedling loading and loading work is carried out. Make it easier to do.

  Moreover, when the planting device (5) is raised and the seedling planting operation is interrupted, the spare seedling platform (6) is switched to the unfolded form (B) at the same time, so that the operator can prepare the preliminary seedling platform (6). ), It is not necessary to perform the posture switching operation one by one, and it is possible to reduce the labor of the worker and perform a quick and efficient work operation.

  And if a planting apparatus (5) is lowered | hung, an operator will return to a seedling planting operation | work, when an operator returns to a seedling planting work (6) by switching to a lamination | stacking form (A). It is not necessary to perform the switching operation, and labor can be saved.

  Furthermore, the operation of switching the mat seedling receiving position of the preliminary seedling stage (6) between the stacked form (A) and the unfolded form (B) is not always performed during the seedling planting operation. (6) Since it is performed when the mat seedling on the top is lost, the seedling receiving posture is selected only when switching the seedling receiving posture and interlocked with the raising and lowering of the planting device (5). By providing the selection mechanism so as to perform switching, it is possible to select the seedling receiving posture of the preliminary seedling placing stand (6) quickly and accurately by a simple configuration and operation.

  In addition to the effect of the invention described in claim 1, the invention described in claim 2 detects that the traveling vehicle body (2) is tilted in the forward ascending posture, while the tilt sensor (7) detects the planting device ( When the elevating sensor (8) detects that 5) has risen above a predetermined level, the elevating link mechanism 4 or the drive motor (9) is operated to switch the preliminary seedling platform (6) to the unfolded configuration (B). Can do.

  As a result, the traveling vehicle body (2) has a largely forward ascending posture, for example, when the traveling vehicle body (2) exits from the field, and at this time, the unfolded form (B) at the front upper position of the traveling vehicle body (2). Because the front part of the stand for seedlings (6) extends, the position of the center of gravity as the seedling transplanting machine is displaced to the front part and the upper part of the heel. It is possible to drive over the heel with a safe posture.

  In addition to the effect of the invention described in claim 1 or 2, the invention described in claim 3 moves the preliminary seedling stage (6) from the developed form (B) at the front position of the stacked form (A) to the rear position. When moving largely in the front-rear direction over the rear deployment form (C), the changeover switch (10) is operated to drive the drive motor (9), and the movement stop position of the spare seedling platform (6) is operated. As a result, the control operation can be easily and easily performed from the remote operation position, and the operability is improved.

  In addition, it is possible to lengthen the front-rear direction travel of the preliminary seedling stage (6), and to replenish the mat seedling and the mat seedling to the seedling tank of the planting device (5) for work materials such as fertilizer bags, and the vehicle body (2 ) Fertilizer supply to the fertilization tank on the rear can be performed easily and quickly, improving seedling planting work efficiency and reducing work labor.

And also in a structure, since the preliminary seedling stand (6) itself can be utilized as a carrier for material conveyance, it can be set as the form which is easy to handle.
In addition to the effect of the invention according to any one of claims 1 to 3, the invention according to claim 4 is configured to manually or drive the preliminary seedling stand (6) with the engine (11) stopped. When the motor (9) is moved in the front-rear direction and switched to the unfolded form (B), the start assisting device (12) can be operated by this operation to make it easy to start the engine (11). By accelerating the start of (11), particularly when the air temperature is low, the warm-up operation can be sufficiently maintained and the seedling transplanter can start working quickly and work efficiency can be improved.

  According to the fifth aspect of the present invention, in addition to the effect of the first aspect of the present invention, the presser handle (13) for pressing the front end of the traveling vehicle body (2) is rotated to the front side of the machine body. By using the presser handle (13) on an inclined ground such as the entrance / exit of a supplementary field, the preliminary seedling platform (6) is moved to the front side by pushing it into the expanded form (B). And by moving the position of the center of gravity of the preliminary seedling stand (6) on the front portion of the traveling vehicle body (2) by pressing the presser handle (13), The movement can be performed smoothly and in a stable posture.

  In addition to the effect of the invention according to any one of claims 1 to 5, the invention according to claim 6 is provided with inclined surfaces (14) on the left and right side surfaces of the preliminary seedling stage (6), and the inclination. Since the detent surface (15) is formed at the back end of the surface (14) and guides the mat seedling to slide, the mat seedling loading movement on the upper surface of the preliminary seedling mount (6) The mat seedling can be maintained in a stable mat seedling-accommodating posture by restricting the left-right swinging, and the mat seedling once supplied and guided to the rear side beyond the detent surface (15) is the spare seedling mount (6 ) Even if the surface is tilted forward and downward, it can be prevented from returning to the front side, the mat seedling can be accommodated and supported at an accurate position, and the subsequent mat seedling can be easily taken out. it can.

Side view of seedling transplanter Top view of seedling transplanter Side view showing interlocking relationship between lifting link mechanism and reserve seedling frame Enlarged side view of lifting link mechanism Side view showing the stacking form of the spare seedling frames Side view showing how the reserve seedling frame is unfolded Side view showing a developed form of a spare seedling frame when switching with a drive motor Enlarged side view of the drive motor (A) Side view showing switching operation state of spare seedling frame, (b) Main part enlarged view showing switching part of preliminary seedling frame Plan view showing the switching operation state of the spare seedling frame Side view showing the stacking form of the spare seedling frame when switching operation with the presser handle Enlarged side view of the presser handle (A) A plan view showing a loading state of mat seedlings on the preliminary seedling stage, (b) a plan view showing a return preventing action of the mat seedlings on the preliminary seedling stage. The top view which shows the turning state of a reserve seedling frame part Front view showing an example of the support structure of the spare seedling frame Side view of spare seedling frame

  On the basis of the drawings, the seedling transplanting machine is connected to the rear side of the traveling vehicle body 2 in the four-wheeled traveling form on the raised floor via the lifting link mechanism 4 in the parallel link form that is turned up and down by the hydraulic expansion and contraction of the lifting link mechanism 3. A knuckling 20, a float 21 that slides and flattenes the soil surface, a seedling transplanting machine 22 including a transmission case supported on the upper side of the float 21, a seedling tank 23 supported on the upper part of the machine 22, and The planting device 5 in the form of a multi-row planting, which is composed of a planting device 24, etc., which is located at the rear lower part of the machine body 22 and rotates into a double crank mechanism to separate and hold mat seedlings and plant them on the soil surface Then, the fertilizer hopper 25, the fertilizer feeding device 26, the fertilizer bath sub 27, and the fed fertilizer are transported to the rear side portion of the driver's seat 1 of the traveling vehicle body 2 by air blowing from the fertilizer blower 27, and the float 21 By leveling The fertilizing unit 29 consisting of fertilization hose 28 or the like to seedling fertilization planting soil surface near the position guide is mounted on the vehicle body 2 a rear portion of the rear frame 30.

  An engine room is formed under the engine cover 31 below the driver's seat 1 of the traveling vehicle body 2 and an engine 11 for driving is mounted. A steering board 32 and a steering handle are provided in front of the driver's seat 1. 33, and other operation tools 34 for operating the seedling transplanter.

  The driver's seat 1, the steering board 32, and the left and right side portions such as the center floor 35 between them are continuously long and wide from the front end of the traveling vehicle body 2 to the fender 36 on the rear end. The formation side floor 37 is formed, and the operator and the operator move widely on the upper surface of the side floor 37 back and forth so that the mat seedling replenishment work, the fertilizer replenishment work, and the like can be easily performed.

  On the front end of the traveling vehicle body 2, a seedling support frame 38 is provided on the outer side of the side floor 37, and a plurality of stages of the seedling support base 6 is provided on the upper side of the upper seedling rack support base 16. Support structure. At the center of the front end of the traveling vehicle body 2, a presser handle 13 is provided around the presser shaft 39 and can be rotated to an appropriate angle forward. A center marker 40 for a directional needle is provided on the handle 13.

  A transmission case 41, a hydraulic continuously variable transmission 42, and the like are provided on the front side of the engine 11, and are transmitted from the engine 11 to transmit the front axle 44 of the left and right front wheels 43 and the rear axle 46 of the left and right rear wheels 45. The interlocking shaft 47, the PTO shaft 48, etc. to be transmitted and rotated. By this PTO shaft 48, the seedling tank 23, the planting device 24, the fertilizer application device 29, etc. of the planting device 5 are interlocked, and the rear wheel 45 and the auxiliary low hand 20 are transmitted and rotated via the interlocking shaft 47. To do.

  The elevating link mechanism 3 is expanded and contracted by hydraulic pressure supplied and discharged from a hydraulic pump circuit driven and rotated by the engine 11, and by this expansion and contraction, the lift arm 49 is rotated forward and backward around the arm shaft 50 of the rear frame 30. By moving, the lifting / lowering link mechanism 4 connected to the rear frame 30 is moved up and down, and the planting device 5 attached to the rear end link hitch 51 can be moved up and down while maintaining a parallel posture. . The expansion / contraction of the lifting / lowering link mechanism 3 can be operated by operating a switching valve of a hydraulic circuit by the operation tool 52 on the side of the driver's seat 1, but the center float at the center of the float 21 moves the soil surface. In response to the pressure when sliding, it can swing up and down to detect the depth of the soil surface and changes in the uneven surface. When the planting device 5 sinks and the elevation angle of the center float 21 becomes larger than a predetermined angle, the switching valve of the hydraulic circuit is switched in conjunction with this, and the planting device 5 is lifted up, When the seedling planting depth is controlled to be shallow, or conversely, when the elevation angle of the float 21 becomes smaller than a predetermined angle, the switching valve is switched and the planting device 5 is lowered to interlock with the seedling planting depth. The depth of planting is controlled so that the seedling planting depth is maintained substantially constant regardless of the depth of the soil surface, the state, or the like.

  3 to 6, the interlocking relationship between the switching between the stacked form A and the deployed form B of the preliminary seedling platform 6 and the lifting operation of the lifting link mechanism 4 by the lifting link mechanism 3 will be described. Each of the preliminary seedling platforms 6 on both the left and right sides has a plate-like shape on which mat seedlings grown in a rectangular mat seedbed shape can be placed, and a pair of upper and lower shelf rails above the seedling platform support base 16. 60 and 61 are supported in two upper and lower stages. A pair of front and rear parallel links 62 are erected upward from the lower seedling stand support base 16 (or the lower shelf bar 61 part), and the upper upper shelf bar 60 is supported across the upper ends of the parallel links 62. Is done.

  By rotating the parallel link 62 back and forth with respect to the seedling support base 16, the upper shelf bar 60 can be rotated back and forth while maintaining a state parallel to the upper surface of the lower shelf bar 61. When rotated to the position, the upper shelf frame 60 is positioned at an appropriate height interval above the lower shelf frame 61 to form the stacked form A, and when rotated to the front lower position, the upper shelf frame 60 It becomes the expansion | deployment form B which is located on a front side extension surface and is located in a line along the front-back horizontal surface. In this development form B, the rear end of the preliminary seedling table 6 supported on the upper shelf bar 61 is close to or connected to the front end of the preliminary seedling table 6 supported on the lower shelf frame 61. Thus, the seedling receiving shelf surface 63 that receives the bottom surface of the mat seedling is configured to protrude forward from the shelf surface 64 of the lower shelf bar 61 and is maintained at substantially the same height surface.

  It is set as the form which connects the interlocking wire 55 and performs the back-and-forth movement of such a raising / lowering link mechanism 3 and the reserve seedling stand 6. The elongated hole 57 at the base end of the interlocking wire 55 is fitted to the pin 56 of the lift arm 49, and the lift link mechanism 3 is expanded and contracted to move the lift arm 49 and the lift link mechanism 4 up and down around the arm shaft 50. By doing so, the wire 55 can be pulled or loosened.

  Further, the distal end portion of the interlocking wire 55 is connected to a bracket pin 66 near the lower end link pin 65 of the parallel link 62 that supports the upper shelf bar 60 via a spring 67. By pulling the interlocking wire 55 from the lifting link mechanism 3 side, the parallel link 62 can be rotated to the front side and switched to the deployment form B.

  A return spring 68 is provided between the rear end portion of the seedling support frame 38 and the bracket pin 66 of the parallel link 62, and the parallel link 62 is urged so as to rotate backward, whereby the stacked form A The parallel link 62 mechanism in FIG. 4 is configured to be difficult to vibrate and swing.

Further, the return spring 68 assists the switching operation to the stacked form A easily by pulling the parallel link 62 rearward when the elevating link mechanism 4 is lowered in the deployed state B.
A shelf bar 61 slidable in the front-rear direction is formed between the lower-stage preliminary seedling table 6 and the upper surface of the seedling-loading support frame 38 that receives it. Can be connected to the rear end of the reserve seedling stage 6 of the development form B, so that the connection between the front and rear preliminary seedling stage 6 can be made smooth and accurately maintained.

  The lock pin 69 of the shelf bar 61 is engaged with a lock hook 71 held swingably around the pin 70 of the seedling support frame 38 so that the shelf bar 61 is moved up and down when the elevating link mechanism 4 is moved up and down. Can be restricted from moving back and forth.

  As described above, the lock hook 71 is engaged with the lock pin 69 to lock the shelf bar 61 so that the shelf bar 61 is not moved. Without switching, it is possible to prevent the mat seedling from falling and the auxiliary seedling shop 6 from contacting an obstacle.

  Further, when the lock hook 71 is engaged, even if the interlocking wire 55 is caught by the up-and-down rotation of the elevating link mechanism 4, the wire 55 is damaged by absorbing it with the spring 67 force. Further, it is possible to prevent the forcible switching movement of the preliminary seedling stage 6 and improve the durability. A handle 59 is provided at the rear end side portion of the seedling bar 60 that supports the upper preliminary seedling table 6 and can be moved in the front-rear direction by manual operation.

  Here, this reserve seedling frame is connected to the rear portion of the traveling vehicle body 2 having the driver's seat 1 through a lifting link mechanism 4 that can be lifted and lowered by the lifting link mechanism 3, and a multi-row planting device 5. In the front part, in the seedling transplanting machine configured to be switchable between a stacking form A in which the preliminary seedling stage 6 for mounting the mat seedling is stacked in a plurality of stages and a deployment form B arranged in the front and back, the lifting link mechanism In conjunction with the raising and lowering of the planting device 5 by 3, the preliminary seedling stage 6 is provided so as to be switchable between the stacked form A and the developed form B.

  When the seedling transplanting machine 5 is driven to perform seedling planting work by the planting device 5, the preliminary seedling stage 6 on which the mat seedling is previously mounted is in the stacked form A that is stacked high in the vertical direction. On the rear side of the traveling vehicle body 2, the planting device 5 is lowered onto the soil surface through the lifting link mechanism 4 lowered by the operation of the lifting link mechanism 3, and seedling planting work is performed. Is in a state. If the seedlings supplied to the planting device 5 are reduced by the operation, the driver takes out the mat seedlings on the upper surface of the preliminary seedling stand 6 on the front side, carries them to the rear planting device 5 and inserts them. Continue planting work.

  When the seedling planting operation is finished and the planting device 5 is lifted and the seedling transplanter simply travels and moves, the planting device 5 is operated by the lifting link mechanism 3 via the lifting link mechanism 4. It raises and makes it easy to carry out traveling movement by using the planting device 5 as a non-seedling planting work posture.

  Further, in conjunction with the raising of the planting device 5 by the elevating link mechanism 3, a part of the preliminary seedling stage 6 in the stacked form A can be moved to the front side and switched to the front-to-back deployed form B. .

  Further, when the seedling planting work 5 is immediately shifted to the starting position of the seedling planting work from the expanded form B of the preliminary seedling stage 6, the planting device 5 is lowered to the seedling planting work state by the operation of the lifting link mechanism 3. Accordingly, in conjunction with this, the preliminary seedling stage 6 is moved from the development form B to the lamination form A, and is in a form suitable for seedling planting work.

  And in the said seedling transplanting machine, the inclination sensor 7 which detects the back-and-front inclination of the said traveling vehicle body 2, the raising / lowering sensor 8 which detects raising / lowering of the said planting apparatus 5, and the said preliminary seedling stand 6 are laminated | stacked form A When the traveling vehicle body 2 is tilted forward and the planting device 5 is in the raised position by providing the lifting link mechanism 3 or the drive motor 9 for switching to the deployment form B, the preliminary seedling platform 6 is Operate to deployment B.

  When the seedling transplanter runs on the soil surface of the field and performs seedling planting work, the reserve power is interlocked by using the driving force for raising and lowering the planting device 5 by the expansion and contraction operation of the lifting link mechanism 3 as described above. The seedling stage 6 can be switched between the stacked form A and the developed form B.

  In addition, when the traveling vehicle body 2 is largely inclined in the front-rear direction, for example, when entering or leaving a farm field across the ridge, the inclination sensor 7 detects the inclination. At this time, when the raising / lowering position of the planting device 5 is detected by the raising / lowering sensor 8, the operation of the raising / lowering link mechanism 3 or the operation of the drive motor 9 is performed on the preliminary seedling stage 6 in the stacked form A. To move to the front side and switch to the expanded form B.

  As a result, when the traveling vehicle body 2 is inclined forward and the rear planting device 5 is in the raised position, or in the form similar to the raised position, the preliminary seedling platform 6 is moved to the front side of the traveling vehicle body 2 and deployed. In the form B, the seedling transplanting machine maintains a safe posture for running the machine by balancing the front and rear weights.

  The spare seedling stage 6 is provided so as to be switchable between the stacking form A and the unfolded form B, and arranged rearward from the stacking form A by the operation of the changeover switch 10 and the rotation of the drive motor 9. It is provided so as to be switchable to the development form C.

  The seedling transplanting machine is operated in the field as in the case of seedling planting as described above, by the operation of the lifting link mechanism 3 that lifts and lowers the planting device 5, or when entering and leaving the field, the lifting link mechanism. 3 or the drive motor 9 or the like, the preliminary seedling stage 6 can be switched from the stacked form A to the expanded form B, but the preliminary seedling stage 6 is moved to the rear side to change to the rear expanded form C. When switching, the changeover switch 10 is operated or the drive motor 9 is driven to move the preliminary seedling stage 6 to the rear side to switch to the rear side development form C.

  In this way, the mat seedlings placed in the developed form B or the laminated form A by switching the preliminary seedling stage 6 from the position of the developed form A or the laminated form B to the rear developed form C are switched. In addition, work materials such as fertilizer bags can be placed on the upper surface of the preliminary seedling table 6 and conveyed and guided in the front-rear direction, thereby improving workability.

Further, the cell seeder 12 for starting the engine 11 of the traveling vehicle body 2 is provided to be drivable by rotating the preliminary seedling placing table 6 to the front side in the development form B.
The preliminary seedling stage 6 can be moved from the stacked form A to the front deployment form B by moving in the front-rear direction by an electric motor 9 by manual operation or switch operation. In conjunction with the movement to the deployment mode B, the cell motor 12 is driven to start the engine 11 of the traveling vehicle body 2.

In addition, the preliminary seedling stage 6 is configured to be operable from the stacking form A to the developing form B at the lower front side by rotating the presser handle 13 installed at the front end of the traveling vehicle body 2 to the front side.
When the preliminary seedling stage 6 is moved to the unfolded form B by manual operation, the operator switches from the stacked form A to the unfolded form B by rotating the pressing handle 13 at the front end of the traveling vehicle body 2 to the front side. Can do.

  Further, on the left and right inner wall surfaces of the seedling receiving surface of the preliminary seedling stage 6, an inclined surface 14 that inclines so as to project inward toward the rear side, and a configuration in which the rear end of the inclined surface 14 is cut off at a steep angle. The back stop surface 15 is formed to guide the left and right side surfaces of the mat seedling.

  As described above, the preliminary seedling stage 6 is set to the development form B, and is extended to the front side of the traveling vehicle body 2, and the mat seedling is placed from the upper surface of the front end portion of the preliminary seedling stage 6 and is slid rearward. Then, it is guided to be placed on the upper surface of the rear seedling placing table 6. In this mat seedling sliding guide, the left and right side surfaces of the mat seedling are guided by the inclined surfaces 14 on the left and right inner wall surfaces of the preliminary seedling mount 6 and are guided toward the central portion of the width of the preliminary seedling mount 6 while being spared. It is moved onto the rear surface of the seedling table 6.

  When the front end surface of the mat seedling, which is the front end portion of the mat seedling supplied from the front side of the traveling vehicle body 2, passes through the rear end of the inclined surface 14, the left and right end portions of the rear end surface are returned from the rear end of the inclined surface 14. The mating seedling is stopped from moving to the front side by being latched by the return stop surface 15 on the rear side of the protrusion. Regardless of whether the seedling transplanter is running, stopped, etc., or whether the preliminary seedling stage 6 is tilted or swung, the mat seedling is supplied and supplied smoothly and accurately to the preliminary seedling stage 6. .

  Next, mainly in FIGS. 7 and 8, the drive motor is operated by operating the tilt sensor 7 for detecting the front / rear tilt of the traveling vehicle body 2, the lift sensor 8 for detecting the lift position of the planting device 5, or the changeover switch 10. 9 is driven to switch the preliminary seedling stage 6 from the stacked form A to the front-side developed form B, the rear-side developed form C, or the like.

  A drive motor 9 in the form of an electric geared motor is provided below the seedling store support frame 38 that supports the lower preliminary seedling stand 6, and a gear 75 of the link (pin) shaft 65 of the parallel link 62 is provided by this gear 75. By rotating 76, the preliminary seedling stage 6 supported on the upper side of the parallel link 62 can be switched between the stacking form A and the front and rear development forms B and C. A stopper 72 that locks the stacking form A position of the preliminary seedling stage 6 is provided in the support frame 38 that approaches the rotation area of the parallel link 62. When rotating to the rear development form C region, the stopper 72 is retracted and does not act.

  9A, 9B, and 10, the cell starter of the engine 11 is interlocked with the switching movement of the preliminary seedling stage 6. In the illustrated example, the pinion gear 75 is rotated through the sector gear 76 by rotating the parallel link 62 back and forth, and the rope 77 or the wire 78 of the cell starter 12 is taken up by the reel 77 that rotates integrally with the gear 75. Thus, the engine 11 can be started.

  11 and 12, the press handle 13 is rotated forward about the press shaft 39 by pulling the press handle 13 to pull the wire 55 connected to the arm 77 integral with the press handle 13, thereby providing a parallel link. The preliminary seedling stage 6 can be switched between the stacked form A and the developed form B by rotating 62 to the front side. The presser handle 13 is attached to the front end portion of the bracket 78 at the front end portion of the traveling vehicle body 2 by a presser shaft 39, and the presser handle 39 is rotated forward by a predetermined angle, whereby the front end portion of the traveling vehicle body 2 is lifted. It is used when traveling in and out of an inclined surface such as a shore. A lock hook 79 is engaged with the rotation of the arm 77.

  The lock hook 79 has a base portion that is rotatable around the pin 80 on the traveling vehicle body 2 side, and a tip portion that can be manually engaged with a pin 81 that connects the wire 55. When the lock hook 79 is engaged with the pin 81, the presser handle 13 cannot be rotated forward, and the preliminary seedling stage 6 cannot be switched from the stacked form A to the developed form B. Is in a state.

  13 (a) and 13 (b) show the planar form of the auxiliary seedling store 6 at each stage, and the mat seedling 82 grown in the mat floor form in the seedling box 81, or this seedling box 81. Can receive. When the mat seedling 82 is received as it is in the seedling box 81, when the mat seedling 82 is supplied to the seedling tank 23 of the planting device 5, the mat seedling 82 is taken out from the seedling box 81 and only the mat seedling 82 is supplied to the seedling tank 23. . Side walls 83 having substantially the same height as the seedbed thickness of the mat seedling 82 are formed in the front-rear parallel form on the left and right side edges of the preliminary seedling stage 6, but this front half extends from the front end to the rear side. An inclined surface 14 is formed so as to incline and project inward, and an acute-angle detent surface 15 is formed at the rear end of the inclined surface 14.

  Side walls 83 on the left and right side portions on which the inclined surface 14 and the detent surface 15 are disposed are formed in a left-right direction with respect to the center line L of the preliminary seedling table 6. A concave edge 84 is formed at the front end edge of each preliminary seedling stage 6 so that the central portion is recessed rearward and the left and right side portions protrude forward, and the central portion is directed rearward at the rear end edge. A convex bent edge 85 is formed by projecting, and the left and right sides are recessed forward.

  By setting the concave curved edge 84 and the convex curved edge 85 of each of the preliminary seedling mounts 6 to be opposed to each other from the front and rear sides, approaching and joining them, and connecting them to a front and rear series form (deployment form B), The rear side of the mat seedling 82 mounted on the back (possibly in the form of being accommodated in the seedling box 81) is guided by the inclined surface 14 so as to approach the central portion side of the preliminary seedling stage 6 width. The guiding action can be performed smoothly and accurately so as to push and move.

  Next, mainly referring to FIG. 14, the preliminary seedling stage 6 on the seedling support frame 38 is in the state of the front deployment form B, and the support arm 84 that supports the parallel link 62 is attached to the support frame 38. Although it can turn to the horizontal direction 86 around the arm axis | shaft 85 or to turn to the front direction 87, on the front edge part of the side floor 37, the turning support arm 88 independent of the said support arm 84 is set to the left-right direction. It is provided so as to be able to rotate, and the preliminary seedling stage 6 on the upper side of each turning support arm 88 can be placed and transferred in the left-right direction.

  In the example shown in the figure, the left side seedling stand 6 is set to the development form B, the outside end stand is placed on the road surface E over the ridge D, and the mat seedling is preliminarily seeded on the road surface E. It is placed on the top surface of the platform 6 and is moved (f1) by being pushed to the preliminary seedling platform 6 on the traveling vehicle body 2 side. The left seedling support arm 88 is turned to the heel D side, and the mat seedling is placed on the preliminary seedling support base 6 on the swing support arm 88 in a state where the preliminary seedling support base 6 is moved back and forth. f2).

  Further, the right turning support arm 88 is moved closer to the front side, and the mat seedling is moved from the left spare seedling stage 6 to the upper surface of the right preliminary seedling stage 6 (f3). Furthermore, if the right side seedling stage 6 is set to the front deployment form B, the front side seedling stage 6 is brought close to the end of the preliminary seedling stage 6 on the right turn support arm 88, thereby mat seedlings. Can be sequentially transferred (f5) to the spare seedling stage 6 on the right rear side.

  For this reason, when mat seedlings are supplied to the reserve seedling platform 6 on the right side of the traveling vehicle body 2, the operator can walk the mat seedlings one by one without changing the direction of the traveling vehicle body 2. The supply work can be performed quickly.

  Next, mainly based on FIG. 15 and FIG. 16, a front support 89 located on the front side of the left and right seedling support frame 38 is formed in a U-shaped form in a front view with a tube material or the like. The front guard 90 located at the bottom of the shape is extended so as to be located at the lower part of the front end of the traveling vehicle body 2, and the front strut 89 of the left and right seedling support frame 38 is integrated with a front guard 90 portion that is curved forward. It is configured to be connected to each other in a light and rigid manner, and the vibration and swinging of the 6 parts of the weight preliminary seedling stage on both the left and right sides are reduced to provide a stable support form.

2 Traveling body 4 Elevating link mechanism 5 Planting device 6 Preliminary seedling frame 7 Tilt sensor 8 Elevating sensor 9 Drive motor 10 Changeover switch 11 Engine 12 Cell starter (starting auxiliary device)
13 Presser handle 14 Inclined surface 15 Return stop surface A Lamination form B Deployment form C Rear deployment form

Claims (6)

A planting device (5) is provided at the rear of the traveling vehicle body (2) via an elevating link mechanism (4), and a spare seedling platform (6) for loading a spare mat seedling on the front side of the traveling vehicle body (2). In a seedling transplanting machine configured to be switchable between a stacked form (A) and a deployed form (B) arranged in front and rear,
Seedling transplantation characterized in that the preliminary seedling stage (6) is switched between a stacked form (A) and a deployed form (B) in conjunction with the raising and lowering of the planting device (5) by the lifting link mechanism (4). Machine seedling frame.   An inclination sensor (7) for detecting the front / rear inclination of the traveling vehicle body (2) is provided, an elevation sensor (8) for detecting elevation of the planting device (5) is provided, and the preliminary seedling platform (6) is provided. An elevating cylinder (3) or a drive motor (9) that switches between a stacked form (A) and a deployed form (B) is provided, and the tilt sensor (7) detects the forward ascending inclination of the traveling vehicle body (2) and When the sensor (8) detects that the planting device (5) is in the raised position, the preliminary seedling platform (6) is switched to the deployed form (B). Preliminary seedling frame for the seedling transplanter described.   A drive motor (9) for switching the preliminary seedling stage (6) between the stacked form (A) and the unfolded form (B) is provided, and the drive seedling stage (6) is operated on the front side of the machine body by operating the drive motor (9). The seedling transplanter spare according to claim 1 or 2, further comprising a changeover switch (10) for switching between a stacked configuration (A) positioned at the rear and a rear deployment configuration (C) positioned at the rear of the machine body. Seedling frame.   When the preliminary seedling stage (6) is rotated forward in the unfolded form (B), the start assist mechanism (12) for starting the engine (11) provided in the traveling vehicle body (2) is driven. The preliminary seedling frame of the seedling transplanter according to any one of claims 1 to 3.   When the presser handle (13) provided at the front portion of the traveling vehicle body (2) is rotated to the front side, the preliminary seedling platform (6) changes from the stacked form (A) to the unfolded form (B). The spare seedling frame of the seedling transplanter according to any one of claims 1 to 4, wherein the seedling transplanting machine is configured to be operable.   On the left and right inner wall surfaces of the seedling receiving surface of the preliminary seedling placing stand (6), an inclined surface (14) that inclines so as to project inward toward the rear side, and a rear end of the inclined surface (14) at a steep angle. The spare seedling frame of the seedling transplanter according to any one of claims 1 to 5, wherein a return stop surface (15) in a cut-off form is formed.

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