JP4919203B2 - Transplanter - Google Patents

Description

  The present invention relates to a transplanter equipped with an auxiliary seedling stage for transporting and supplying spare seedlings in rice transplanting and the like.

Conventionally, a planting work machine is connected to a traveling machine body, and an auxiliary seedling placing table that is supplied by placing a preliminary seedling on the seedling placing table from the front side of the traveling machine body is lowered downward and supported. And the transplanter (for example, patent document 1) which connected the front-end side so that rocking up and down was possible is known.
JP-A-6-276821

  In the transplanter described in the above-mentioned document, when adjusting the front end of the auxiliary seedling stand according to the loading height of the spare seedling, the whole auxiliary stand is swung up and down, so if the amount of downward adjustment of the rear end is large As a whole, the whole climbs backward and becomes inclined, and there is a drawback that it is difficult to transport and supply seedlings forward.

Transplanter of the present invention for solving the above problem, the rear of the traveling machine body 1, connecting the planting working machine 4 planted in the field scraped seedlings from seedling stage 8, the aircraft on the side of the traveling machine body 1 Auxiliary seedling stage 7 is supported by tilting backward and supporting the auxiliary seedling stage 7 by placing the auxiliary seedling 18 on the seedling stage 8 from the front. in the front end side vertically swingably linked transplanter, the preliminary set a positioning mechanism for positioning and adjusting the vertical angle of inclination of the front end side with respect to the rear end of the seedling table 7 only, base mounted auxiliary seedlings 7 by moving the movable bracket 27a of the movable seedling base A on the front end side to the inner side surface of the fixed seedling bases 27b of the fixed seedling bases B and C on the rear end side. Is attached to the front end side of the fixed seedling stands B and C so that it can swing up and down. A replaceable plate-like switching member 42 is provided on the outer side surface of the movable bracket 27a, and the switching member 42 is brought into contact with each switching posture and received to position the inclined posture of the movable seedling stand A on the front end side. The positioning mechanism is configured by providing 30 on the fixed bracket 27b .

  According to the transplanter of the present invention configured as described above, the rear end side of the auxiliary seedling platform is inclined downward and the front end of the auxiliary seedling platform is maintained while maintaining an inclination angle suitable for seedling supply. The front and rear ends of the auxiliary seedling platform can be positioned according to the height of the preliminary seedling loading operation.

  In addition, the positioning mechanism is configured with a simple structure by using the switching member, and the height of the supply port of the movable seedling base is set to the most suitable position by the shape of the portion that contacts the receiving portion of the switching member, so that the smoothness is smooth. You can load spare seedlings.

  FIG. 1 is a side view of a riding rice transplanter as an example of a transplanting machine to which the present invention is applied, and FIG. 2 is a plan view of the riding rice transplanter. This riding rice transplanter has a traveling machine body 1 having front wheels 2 and rear wheels 3, a planting work machine 4 for scraping seedlings on a seedling table 8 and planting them on a field, and a preliminary seedling table on which spare seedlings are placed. 6 and an auxiliary seedling stage 7.

  A bonnet 9 is provided on the front side of the traveling machine body 1, and front steps 11 are provided on both the left and right sides of the bonnet 9. A driver's seat 12 including a steering wheel 13, a seat 14, and various operation units is installed behind the bonnet 9, and a step 16 is formed on the floor surface of the driver's seat 12. Steps 17 for supplying seedlings are formed on the left and right sides of the driver's seat 12 higher than the above step 16.

  A planting work machine 4 is connected to the rear of the traveling machine body 1 so as to swing up and down. A preliminary seedling stage 6 is provided on the front right side of the traveling machine body 1, and an auxiliary seedling stage 4 is provided on the left side so as to be supported in the front-rear direction. The auxiliary seedling stage 7 has a front end protruding forward of the traveling machine body 1 and tilted downward so that the slide feeding of the preliminary seedling 18 can be easily performed, and the preliminary seedling 18 is planted from the front of the traveling machine body 1. 4 is transferred to and supplied to the seedling stage 8. In addition, although the auxiliary seedling mount 7 is provided in the left side part of the traveling body 1 in this riding rice transplanter, it may be provided in the right side part or both right and left side parts.

  The auxiliary seedling stand 7 is divided into three seedling stands, a front seedling stand A, a central seedling stand B, and a rear seedling stand C. Each of the seedlings A, B, and C is formed in a substantially rectangular shape in plan view with the left and right side plates 19 connected by a connecting rod 21. A roller shaft 22 is supported between the left and right side plates 19 so as to be rotatable in the left-right direction. Rollers 23 are provided at both left and right ends of the roller shaft 22, and a plurality of the rollers 23 are provided side by side in the front-rear direction to form a conveying surface.

  The auxiliary seedling mount 7 is supported on the left side of the traveling machine body 1 via a support 24 in which two front and rear upper portions are formed in an inverted L shape inwardly. The front and rear struts 24, 24 project upward from the side of the traveling machine body 1 and are connected to each other by a connecting rod 26. The center seed bed B is supported at the upper end portion of the rear stay 24 at the rear end side and supported at the upper end portion of the stay 24 at the front side, and is fixedly supported at the side portion of the traveling machine body 1.

  The front seedling stand A and the rear seedling stand C are each deployed in a substantially straight line with the central seedling stand B and in a retracted posture that is folded above the central seedling stand B and substantially parallel to the central seedling stand B. The posture can be switched. When the front seedling stand A and the rear seedling stand C are simultaneously switched to the retracted posture, the rear seedling stand C is first folded above the central seedling stand B, and then the front seedling stand A is moved to the rear seedling stand C. Folded over and folded.

  The rear seed bed C is rotatable to the rear end portion of the central seed bed B by a movable bracket 26c provided on the front end side of the rear seed bed C and a fixed bracket 26b provided on the rear end side of the central seed bed B. It is pivotally supported. By the above rotation, the rear seedling stand C can be switched between the deployed posture and the retracted posture, the front end surface of the rear seedling stand C abuts the rear end surface of the central seedling stand B, and the deployed posture of the rear seedling stand C is maintained. The transporting surface of the rear seedling stand C is overlapped with the transporting surface of the central seedling stand B, and the retracted posture of the rear seedling stand C is maintained.

  3 is a side view of a connecting portion between the front seedling stand A and the central seedling stand B, and FIG. 4 is a plan view of a connecting portion between the front seedling stand A and the central seedling stand B. Fixing brackets 27b are provided at the front side end portions on the outer sides of the left and right side plates 19, 19 of the center seed bed B, respectively. On the front side of the left and right fixing brackets 27b, 27b, a substantially rectangular protruding portion 28b protruding upward is formed.

  A movable bracket 27a is provided at the rear side ends of the left and right side plates 19, 19 of the front seedling stand A. The left and right movable brackets 27a and 27a are each formed with a protruding portion 28a that protrudes obliquely rearward and upward.

  The rear end of the front seedling stand A is rotated to the front end of the center seedling stand B by the upper rear end of the protrusion 28a of the corresponding movable bracket 27a being rotatably supported by the upper front end of the protrusion 28b of each fixed bracket 27b. It is pivotally supported. By this turning operation, the front seedling stand A can be switched between the deployed posture and the retracted posture, and the contact surface 29 formed on the rear end face of the front seedling stand A is formed on the front end face of the central seedling stand B. The deployed posture is maintained by abutting 30, and the retracted posture is maintained by the stopper pin 31 provided on the upper side of the projecting portion 28a of each movable bracket 27a contacting the upper end surface of the projecting portion 28b of the fixed bracket 27b.

  When the abutment surface 29 of the front seedling stand A is brought into contact with the receiving surface 30 of the central seedling stand B, the inclination angle of the front seedling stand A is smaller than the inclination angle of the central seedling stand B and is substantially horizontal along the aircraft. It becomes. In addition, by changing the rotation position of the front seedling table A and the shape of the contact surface 29, the front seedling table A can be inclined downward toward the front during the deployed posture.

  Next, the ratchet mechanism provided in the connection part of the front seedling stand A and the central seedling stand B will be described. A ratchet wheel 32 that rotates integrally with the front seedling bed A is attached to a rotating portion in which each fixed bracket 27b pivotally supports the movable bracket 27a.

  A downwardly extending arm 33 is rotatably supported on the upper portion of the protruding portion 28b of each fixing bracket 27b, and a locking claw 34 that engages with a claw of the ratchet wheel 32 is formed on the upper end of each arm 33. Each arm 33 is urged toward the engagement side with the ratchet wheel 32 by an urging member such as a spring 36 so that the locking claw 34 engages with the claw of the ratchet wheel 32.

  A ratchet mechanism is formed by the engagement of the ratchet wheel 32 and the arm 33, and the rotation of the front seedling bed A is only in the rotation direction (clockwise in FIG. 1) in which the front end of the auxiliary seedling bed 7 swings upward. On the other hand, the front seedling stand A is urged by a spring 37 in a turning direction (counterclockwise in FIG. 1) in which the front end of the auxiliary seedling placing stand 7 swings downward.

  The engagement between the ratchet wheel 32 and the arm 33 is released by a release lever 38. The left and right arms 33, 33 are connected at the lower end side by a connecting rod 41 and always rotate integrally. On the right side surface of the front seedling stand A, a release lever 38 whose rotation fulcrum rotates integrally with the left and right arms 33 and 33 on the rotation axis of the left and right arms 33 and 33 is attached. The release lever 38 protrudes in the front-rear direction around the pivot point, and a grip 39 is provided at each of the front and rear ends so that the release lever 38 can be operated from either side.

  By rotating the release lever 38 in the direction in which the arm 33 releases the engagement with the ratchet wheel 32 (counterclockwise in FIG. 3), the rocking lock below the front end of the auxiliary seedling support 7 is released. Is done. When releasing the lock, the release lever 38 is provided on the right side surface of the front seedling stand A that is close to the driver's seat 12, so that the lock can be easily released from the driver's seat 12 side.

  According to the above-described configuration of the riding rice transplanter, the front seedling stand A is rotated, and the height of the front end of the preliminary seedling stand 7 is adjusted according to the height and working position height of the worker who puts the preliminary seedling 18 in. it can. And even if the front seedling bed A is rotated, the center seedling bed B and the rear seedling bed C are always formed with a conveying surface that is inclined downward toward the rear. The preliminary seedling 18 can be conveyed to the rear seedling stand 8. In the configuration described above, the number of the movable seedling beds A to be rotated is not limited to one, but may be two connected seedling beds, and the fixed seedling beds B and C are not limited to two. However, the total length of the movable seedling stand A is preferably shorter than the total length of the fixed seedling stands B and C in terms of operation.

  5 (A) and 5 (B) show another embodiment and show an example of a riding rice transplanter in which a switching member 42 is provided at the contact portions 29 and 30 of the connecting portion between the front seedling stand A and the central seedling stand B. Yes. The structure of this passenger rice transplanter is the same as that of the above-mentioned passenger rice transplanter except for the ratchet mechanism, and different parts will be described below.

  In this example, a plate-like switching member 42 having a substantially triangular shape in a side view is provided on the lower part of the rear end of the left and right movable brackets 27a, 27a of the front seedling stand A, and the apex of the front end is rotated by the support shaft 43. The upper and lower stopper surfaces (abutment surfaces) 29a and 29b are formed at the rear end thereof so as to be freely supported by the movable bracket 27a. The upper and lower contact surfaces 29a and 29b are selectively contacted with a receiving surface 30 on the fixed bracket 27b side described below, whereby the inclination angle of the front seedling bed A is determined.

  Each switching member 42 is formed with an arcuate guide groove 44 centered on the support shaft 43, and a bolt 46 is inserted through the guide groove 44. In this example, the guide groove 44 is movable at the upper and lower limit positions. Fastened to the bracket 27a side. The switching member 42 is rotated by loosening the bolt 46 inserted in the guide groove 44.

  As shown in FIG. 5 (A), by fixing the switching member 42 at the upper end of the guide groove 44, the upper contact surface 29a is brought into contact with the receiving surface 30 on the central seedling stand B side in the state where the front seedling stand A is extended. The front seedling stand A stops in a state where it is slightly steeply inclined from the central seedling stand B. On the other hand, as shown in FIG. 5B, by fixing the switching member 42 at the lower end of the guide groove 44, the lower contact surface 29b contacts the receiving surface 30, and the front seedling stand A is the central seedling stand. It is stopped and held in a state slightly inclined slightly from B.

  When the switching member 42 is fixed in the middle of the guide groove 44, the apex portion 47 formed by the upper and lower abutment surfaces 29a and 29b abuts on the receiving portion 30, and the apex portion 47 is connected to the receiving portion 30. The inclination angle of the front seedling stand A with respect to the central seedling stand B is defined by the contact portion. For this reason, in the range from the upper end to the lower end of the guide groove 44, the angle of the front seedling bed A can be adjusted steplessly. The stepless angle adjustment of the front seedling bed A can also be performed by making the shape of the contact surface 29 of the switching member 42 into an arc shape in a side view. In addition, it becomes possible to perform fine angle adjustment of the front seedling stand A by making the shape of the contact surface 29 polygonal in a side view.

  A rod-shaped receiving member 48 is rotatably provided on the left fixed bracket 27b at the front end of the center seed bed B. The receiving member 48 includes a rotating base end bar 49 and a front end bar 51 which is connected to the base end bar 49 at a right angle and whose front end faces inward, and has a substantially L-shape. When the front seedling stand A is retracted, the tip bar 51 of the receiving member 48 is positioned in front of the front end of the central seedling stand B, receives the preliminary seedling 18 protruding from the front end of the central seedling stand B, and the preliminary seedling is placed on the auxiliary seedling placing stand 7. To prevent falling from. Further, when the front seedling stand A is deployed, the tip bar 51 of the receiving member 48 is positioned below the center seedling stand B as shown in FIGS.

It is a side view of a riding rice transplanter. It is a top view of a riding rice transplanter. It is a side view of the connection part of a front seedling stand and a center seedling stand. It is a top view of the connection part of a front seedling stand and a center seedling stand. It is drawing which shows the connection part of a front seedling stand and a center seedling stand, (A) represents the state which the receiving surface of the center seedling stand contact | abutted to the upper contact surface of the switching member provided in the front seedling stand. It is a side view, (B) is a side view showing the state which the receiving part of the center seedling table contact | abutted to the lower contact surface of the switching member provided in the front seedling table.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 4 Planting work machine 7 Auxiliary seedling placing stand 8 Seedling placing stand 18 Spare seedling 29 Contact surface (contact part, stopper surface)
27a Movable bracket
27b Fixed bracket 30 receiving surface (contact portion, receiving portion)
42 Switching member A Front seedling stand (movable seedling stand)
B Central seedling stand (fixed seedling stand)
C rear seedling stand (fixed seedling stand)

Claims (1)

A planting work machine (4) for scraping seedlings from the seedling stand (8) and planting them on the farm is connected to the rear of the traveling machine body (1), and the seedlings are placed on the side of the traveling machine body (1) from the front of the machine body. The auxiliary seedling placing table (7) is supported by being inclined downward and supported by placing the auxiliary seedling (18) on the table (8). and forming, at the front end side vertically swingably linked transplanter, it sets the positioning mechanism for positioning and adjusting the vertical angle of inclination of the front end side with respect to the rear end of the preliminary seedling stand (7) The movable bracket (27a) of the movable seedling stand (A) on the front end side of the auxiliary seedling placing stand (7) is placed on the inner side surface of the fixed seedling stand (B) on the rear end side and the fixed bracket (27b) of (C). By pivotally supporting the rear end of the movable seedling stand (A) in front of the fixed seedling stands (B) and (C) A plate-like switching member (42) that can be pivoted up and down is provided on the outer side surface of the movable bracket (27a), and the switching member (42) is brought into contact with each switching posture. A transplanter configured to constitute the positioning mechanism by providing a receiving part (30) for receiving and positioning the inclined posture of the movable seedling table (A) on the front end side in the fixed bracket (27b) .

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