JP2012019701A - Transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transplanter by which fertilizer feeding operation to a fertilizer table can be easily done by changing the posture of seedling conveying table from a standard position to an outside position.SOLUTION: The transplanter 1 in which the seedling conveying table 7 conveying and feeding spare seedlings rearward is arranged above the fertilizer tank 12 arranged in the front part lateral side of the traveling machine 2 having a transplanting device is constituted so as to freely change the posture of the seedling conveying table 7 between the standard position where it is located in a fore and aft direction above the fertilizer tank 12 of the supporting frame 19 and the outside position where it is evacuated from the upper part of the fertilizer tank 12, the stopper 42 is arranged such that the stopper 42 is located in the inside part of the machine from the tank cover 14 in the standard position of the seedling conveying table 7 and the stopper is located in the opening operation locus of the tank cover 14 in the outside position accompanying with the posture changing of the seedling conveying table 7 when arranging the stopper 42 contacting and holding the tank cover 14 vertically turning around the turning supporting point 14a arranged in the back part of the fertilizer feeding port in an erected posture in the seedling conveying table 7.

Description

  The present invention relates to a transplanter provided with a seedling carrier that feeds a preliminary seedling from the front to the rear above a fertilizer tank installed on the front side of a traveling machine body.

Conventionally, a fertilizer tank is disposed on the front side of a traveling machine body equipped with a planting device at the rear, and is supported by a support frame standing on the front side of the traveling machine body above the fertilizer tank. A transplanter provided with a seedling carrier (feeder) for feeding seedlings from the front to the rear of the machine is already known (for example, Patent Document 1).
The seedling carrier of the transplanter is configured to perform the fertilizer supply operation to the fertilizer tank in a state in which the posture is changed to the fertilizer supply posture by rotating the front upward with the rear support rod as a fulcrum.

JP 2009-153423 A

The transplanting machine shown in Patent Document 1 can form a wide space above the fertilizer tank when the seedling carrier is changed to a fertilizer supply posture, and fertilizer supply from a bucket or the like containing paste fertilizer therefrom It is possible to facilitate the work.
However, since the seedling transportation stand is inclined greatly toward the rear, if the posture is changed while the spare seedling is placed, the preliminary seedling will fall backward, so when supplying fertilizer, the seedling transportation stand The posture change must be made in a state where the preliminary seedlings are eliminated, and there is a disadvantage that the fertilizer supply operation becomes complicated.
Also, in the fertilizer supply posture where the front part of the seedling carrier is changed as described above, when trying to supply fertilizer from the front of the fertilizer tank, the seedling carrier comes in contact with the operator's head. There is a problem that the supply work is limited to the side of the fertilizer tank.

  In order to solve the problem, the present invention has a fertilizer tank 12 disposed on the front side of the traveling machine body 2 provided with the planting device 6, and is erected from the traveling machine body 2 above the fertilizer tank 12. In the transplanting machine 1 provided with the seedling carrier 7 that is supported by the support frame 19 and supplies the spare seedling from the front to the rear of the machine body, the seedling carrier 7 is connected to the support frame 19 via the pivot fulcrum 25. The position can be freely changed between the standard position located in the front-rear direction above the fertilizer tank 12 and the outer position retracted from above the fertilizer tank 12, and provided at the rear part of the fertilizer supply port on the seedling carrier 7 When the stopper 42 for holding the tank lid 14 that pivots up and down around the rotating fulcrum 14a in the standing posture is provided, the stopper 42 is attached to the seedling carrier 7 in accordance with the change in the posture of the seedling carrier 7. In the standard position, tank lid 14 Also located laterally within the body, in the outer position it is characterized by providing to lie within the opening motion locus of the tank lid 14.

According to the first aspect of the present invention, the posture of the seedling carrier is freely changeable between the standard position located in the front-rear direction above the fertilizer tank and the outer position retracted from the upper side of the fertilizer tank. In addition, when providing a stopper for holding the tank lid in an upright position, the stopper is positioned closer to the inside of the machine body than the tank lid at the standard position of the seedling transport table in accordance with the change in the posture of the seedling transport table. In this position, the stopper is moved from the in-body position of the tank lid to the tank lid when the posture of the seedling carrier is changed from the standard position to the outward position. It moves automatically within the trajectory, makes it possible to open the fertilizer supply port by holding the tank lid in contact with the stopper and holding it in an upright position, so that a wide space is formed in front of the fertilizer tank and fertilizer supply work is performed. To make it easier to do Kill.
In addition, the tank lid is held in a standing position by the stopper without falling greatly behind the fertilizer supply port, so when closing the tank lid, the tank lid can be raised without taking an unreasonable posture such as extending your hand backwards. The lid closing operation can be quickly performed by a simple operation of pulling forward from the posture.

The side view of the transplanter concerning the embodiment of the present invention. It is a top view of FIG. It is a top view which shows the state which changed the attitude | position of the seedling conveyance stand of the left side of a transplanter to the outward position. It is a front view which shows the structure of the seedling conveyance stand and fertilizer tank of the left side. It is a perspective view which shows the support structure of a seedling conveyance stand. It is a front view which shows the state which changed the attitude | position of the left seedling conveyance stand to the outward position. FIG. 7 is a side view of FIG. 6.

  An embodiment of the present invention will be described with reference to the drawings. 1 to 3, reference numeral 1 denotes a transplanter (passenger rice transplanter), in which an engine is mounted on the front side of a traveling machine body 2 having a front wheel 1a and a rear wheel 1b on the left and right, covered with a bonnet 3, and a handle 4a on the rear side. And a steering unit 4 including a seat 4b and the like, and a planting device 6 is mounted on a lifting / lowering mechanism 5 of a three-point link system configured at the rear of the machine body. This transplanter 1 is a fertilizer for a preliminary seedling stand (hereinafter referred to as a seedling transporting base) 7 for supplying mat seedlings (preliminary seedlings) accommodated in seedling trays such as seedling boxes and scrapers from the shore to the rear of the machine body. It is installed above the tank 9. Moreover, the fertilizer tank 12 is installed in the right and left of the bonnet 3, and supplies (fertilizes) the paste fertilizer accommodated in an inside from a fertilizer nozzle 8 via a fertilizer pump.

The planting device 6 in the illustrated example is provided with a seedling mounting base 10 on which eight seedlings of preliminary seedlings are placed side by side in a tilted manner in front and rear, and at the lower end of the seedling mounting base 10. The seedlings that have been scraped for each strain by the planting claws 11 can be planted in the field.
Then, the replenishment of the spare seedlings performed from the shore side with respect to the seedling mounting base 10 is performed in such a state that the front part of the body is approached toward the shore without laying the traveling body 2 on the shore, from the front part of the body to the rear part. It can be performed by the operation of placing the preliminary seedlings on the front end portion of the seedling carrier 7 installed in the extended posture.

The fertilizer tank 9 is supported by placing a bottom side on a tank support frame 13 projecting from the front left and right of the traveling machine body 2 and covers a fertilizer supply port formed near the front of the flat ceiling surface. The lid 14 is provided so as to be rotatable up and down around a rotation fulcrum 14a provided at the rear portion of the fertilizer supply port. Thereby, as shown in FIG. 7, the tank lid 14 can open the fertilizer supply port by drawing an opening movement locus of approximately 180 degrees from the front to the rear.
Further, the tank lid 14 can be opened and closed freely by a lid closing portion 14b that detachably engages the engagement ring on the lid side with the hook piece on the fertilizer tank 12 side on the front side of the fertilizer supply port.

Next, the seedling carrier 7 will be described with reference to FIGS. This seedling transport stand 7 is of a roller conveyor system in which a plurality of transport rollers 16 are arranged in parallel in a transport direction on a conveyor frame 15 framed in a ladder shape. Then, when the seedling carrier 7 is provided near the left and right outer sides of the front part of the traveling machine body 2, the seedling carrier 7 is disposed in a rearward inclined shape so that the front is raised and the rear is slightly lowered.
As a result, the seedling carrier 7 can, for example, allow an auxiliary worker to place and supply several boxes of spare seedlings from the heel side, roll the spare seedlings on the rollers 16 to reach the rear end, and reserve seedlings. Can be transported.

The seedling carrier 7 in the illustrated example is divided into three equal sizes in the front and rear, and the front conveyor 7a and the rear conveyor 7b arranged in the front and rear are hinged to the middle conveyor 7c, respectively. It is connected to the upper side via a portion 7d so that it can be folded and rotated. The seedling platform 10 is supported by a support frame 19 made of a downward U-shaped pipe material that is erected upward from the traveling machine body 2 inside the fertilizer tank 12 with a configuration described later. is doing.
Thereby, the seedling carrier 7 folds the rear conveyor 7b around the hinge 7d as a fulcrum, and then folds the front conveyor 7a from the conveying posture for supplying the seedlings shown in the figure, so that both are placed on the middle conveyor 7c. It is possible to switch to the stacked storage posture.

  That is, as shown in FIG. 5, a frame bracket 20 having a substantially U-shape is fixed to a side position of the handle 4a on the outer side of the support frame 19 standing from the traveling machine body 2. In this frame bracket 20, a fulcrum pipe 21 is fixed vertically between an upper plate 20a and a lower plate 20b. A shaft portion formed at the rear end portion of the seedling carrier stand 22 to which the middle conveyor 7c is attached is inserted into the fulcrum pipe 21 through a bearing so as to be prevented from being removed by a fastener 23.

  The frame bracket 20, the fulcrum pipe 21, and the shaft portion of the seedling transport base stay 22 constitute a rotational fulcrum portion 25 that forms a rotational fulcrum (rotation center) R of the seedling transport base 7. Is supported by the support frame 19 (traveling machine body 2) so as to be rotatable in the left-right direction of the machine body with the center of the shaft portion as a rotation fulcrum R. In other words, the rotation fulcrum portion 25 forms a rotation fulcrum R of the seedling transport base 7 by supporting the seedling transport base stay 22 on the support frame 19 in a freely rotatable manner.

  Further, the upper plate 20a of the frame bracket 20 is provided with a long hole 26 that is curved concentrically around the rotation fulcrum R, and a stay welded to the rear end portion of the seedling carrier stand 22. A guide pin 29 to be inserted into the long hole 26 is attached to the bracket 27, and the guide pin 29 abuts on both ends of the long hole 26, thereby restricting the rotation range of the seedling carrier 7.

Further, the upper plate 20a of the frame bracket 20 is provided with at least three lock holes 30 in addition to the long holes 26 on the circumference around the rotation fulcrum R, and the lock pins 31 are provided in the respective lock holes. 30, the seedling carrier 7 is moved from the standard position shown in FIGS. 2 and 5 to the outer position indicated by the solid line obtained by rotating the left seedling platform 10 in FIG. 3 outward, and the right side in FIG. 3. The seedling mounting table 10 is configured to be able to be positioned at various positions with respect to the inward position indicated by a dotted line by rotating the seedling table 10 inward.
The lock pin 31 is always urged toward the lock hole 30 by a coil spring 32 that is contracted to the stay bracket 27 side of a seat plate 31a that is integrally attached to the middle portion of the lock pin 31. A pair of plate members 33 are provided.

  The plate member 33 is attached to an operation lever 35 rotatably supported by a bracket piece 27a of the stay bracket 27 and an ear portion 22a provided on the seedling carrier stand 22 at the outer end of the machine body. The lock pin 31 can be inserted into and removed from the lock hole 30 by rotating up and down around the operation lever 35. Thereby, the positioning part 36 is comprised so that the seedling conveyance stand 7 can be positioned in the said standard position, an outward position, and an inward position. The operation lever 35 is formed with a heel side lever 35a and a control unit side lever 35b bent downward at the front and rear ends thereof, and can be operated from the front side of the machine body and the control unit 4 side.

The support frame 19, the seedling carrier stand 22, the rotation fulcrum 25, the positioning part 36, and the like constitute a seedling carrier mounting part 37 that attaches the seedling carrier 7 to the traveling machine body 2. When the positioning part 36 is arranged above the rear part of the fertilizer tank 12, the seedling carrier 7 is attached to the traveling machine body 2 so as to be rotatable in the left-right direction of the machine body around the rotation fulcrum part 25.
The seedling carrier stand 22 is fixed to the inner end of the front and rear stay portions 15a provided on the conveyor frame 15 of the middle conveyor 7c, and is parallel to the inner side of the conveyor frame 15, and the traveling machine body 2 and fertilizer The tank 12 extends upward from the tank 12. Further, the seedling carrier stand 22 forms a handle 22a with its front end bent downward.

  The seedling carrier mounting portion 37 is located in front of the rotation fulcrum portion 25 and is closer to the front portion of the support frame 19 and the stay frame 39 for reinforcement connecting the front side of the seedling carrier stand 22 and the stay bracket 27. By configuring the stopper support mechanism 40, the weight of the seedling transport stand 7 at the standard position is stably shared and supported by the stopper support mechanism 40 and the rotation fulcrum portion 25. The stopper support mechanism 40 is a constituent member on the seedling transport stand 7 side, and the tank lid 14 of the fertilizer tank 12 is raised in a rotating posture (fertilizer supply posture) in which the seedling transport stand 7 is moved to the outward position. The stopper member is held in a posture.

  That is, as shown in FIG. 5, the stopper support mechanism 40 includes a roller-like stopper 42 pivotally supported on a downward mounting piece 41 projecting from a stay frame 39 via a mounting shaft in the front-rear direction, and the support frame 19. The stopper support piece 45 is detachably attached to the attachment piece 43 projecting outward. In front view, the stopper support piece 45 has a semicircular arc shape with the upper side facing upward, and a concave groove-like positioning part 45a for engaging the stopper 42 at the center thereof to position the seedling carrier 7 at the standard position. Forming.

  Thereby, the stopper support piece 45 stably shares the weight on the front side of the seedling carrier 7 at the standard position located in the front-rear direction above the fertilizer tank 12 with the stopper 42 engaged with the positioning portion 45a. The stopper 42 can be positioned by operating the operation lever 35 to remove the lock pin 31 of the positioning portion 36 from the lock hole 30 and operating the seedling carrier stand 22 in the direction of rotation of the handle 22a. The posture can be smoothly changed to the outward position by detaching from the portion 45a and pivoting the seedling carrier stand 7 outward.

At this time, as shown in FIG. 3, in the outer position where the seedling transport base 7 is retracted from above the fertilizer tank 12, a wide space is formed between the bonnet 3 and the seedling transport base 7, and the front portion of the fertilizer tank 12 is formed. And the upper part thereof can be opened. In addition, with the above posture change, the fertilizer is automatically supplied on the opening trajectory of the tank lid 14 that vertically rotates the stopper 42 provided on the seedling carrier 7 around the rotation fulcrum 14a provided at the rear of the fertilizer supply port. You can face the back of your mouth.
Thereby, the worker or the auxiliary worker can stand close to the front side of the fertilizer tank 12 in which a wide space where the seedling carrier 7 does not exist is formed, and the lid closing portion 14b can be opened without taking an unreasonable posture. The tank lid 14 can be opened by a release operation, and the fertilizer supply port is opened by bringing the tank lid 14 into contact with the stopper 42 by the operation of rotating rearward and upward about the rotation fulcrum 14a at the rear of the fertilizer supply port. Can be held in a standing position.

The seedling carrier 7 is a support member that supports the stopper 42 of the stopper support mechanism 40 projecting from the lower part on the front side of the support frame 19 at the standard position of the seedling carrier 7 so as to be detachable. When the posture is changed to the position, it is not a stopper member that holds the tank cover 14 in the standing posture in contact with the standing position, and is automatically retracted from above the fertilizer tank 12 in accordance with the posture change to the standard position. There is a feature that the lid support structure can be simplified without requiring a special stopper member on the 12 side.
The stopper support mechanism 40 can also be provided with a contact sensor that detects and operates so as to slow down or stop the engine rotation, for example, at a portion of the stopper 42 that contacts the tank lid 14. It is possible to prevent sudden start of the aircraft due to erroneous operation.

  Next, the operation of the transplanter 1 configured as described above, the fertilizer supply operation, and the like will be described. First, the worker fills and places the spare seedlings on the seedling placing stand 10 and the seedling carrying stand 7 and starts the work in a state where the fertilizer tank 12 is filled with the fertilizer. Thereby, the transplanter 1 transplants the scraping of seedlings for each strain into the field by the planting claws 11 and simultaneously applies the fertilizer stored in the fertilizer tank 12 to the transplanted seedlings from the fertilizer nozzle 8. Next, when the number of spare seedlings placed on the seedling placing table 10 is reduced in accordance with the work, a continuous transplanting operation is performed by sequentially supplying the spare seedlings placed on each seedling carrying stand 7 to the seedling placing stand 10.

  Then, when the seedlings on the seedling stand 10 are exhausted, the traveling machine body 2 is attached to the ridges to replenish seedlings. At this time, in the case of the leveled rectangular field, the operator stops the traveling machine body 2 perpendicular to the coasting track. In addition, the assistant can supply the spare seedling from the front end portion of the seedling carrier 7 at the standard position in the extended state. Thus, the preliminary seedling supplied to the seedling transport stand 7 is self-propelled on the transport roller 16 along the inclination to the rear side of the machine body and is transported to the rear end portion of the seedling transport stand 7. To be loaded.

   On the other hand, when the assistant is at the apex of the triangular farm (deformed farm) or when the traveling machine body 2 is stopped with respect to the truck on the heel side, the assistant operates the operation lever via the heel side lever 35a. 35 is rotated clockwise and the lock pin 31 is removed from the lock hole 30, and the holding part 22 a of the seedling carrier stand 22 that is offset to the traveling machine body side with respect to the inner edge of the seedling carrier 7 is grasped. The seedling carrier 7 can be rotated from the standard position (FIG. 2) by selecting the outer position indicated by the solid line in FIG. 3 and the inner position indicated by the dotted line in FIG. The rotation position can be fixed by the return operation 35.

  Accordingly, the transplanter 1 can select an appropriate seedling replenishment posture of the seedling carrier 7 that is easy to replenish the spare seedling from the heel side according to the shape of the field or the stop position of the traveling machine body 2. The seedling replenishment work can be efficiently and easily performed on the seedling transport stand 7, and the planting work can be resumed promptly.

  Next, when the fertilizer is replenished in accordance with the seedling replenishment work at the outer position of the seedling transport stand 7 indicated by the solid line in FIG. 3, the stopper 42 of the stopper support mechanism 40 is automatically placed on the opening trajectory of the tank lid 14. Therefore, when the worker or the auxiliary worker opens the tank lid 14 from the front of the fertilizer tank 12, the tank lid 14 is supported without falling backward by coming into contact with the stopper 42 at the back. Thereby, the fertilizer tank 12 can hold | maintain the fertilizer supply port so that fertilizer supply is possible, with the tank cover 14 being hold | maintained in the standing posture of the slightly back inclination shown by the dotted line of FIG.

Therefore, from an open space widely formed between the seedling carrier 7 and the bonnet 3, the worker stands near the front of the fertilizer tank 12 with a fertilizer bag or a bucket containing fertilizer and takes an unreasonable posture. Therefore, fertilizer can be replenished quickly and reliably.
Also, when the tank lid 14 is closed after replenishing the fertilizer, the tank lid 14 is in a standing posture, so that it does not take an unreasonable posture such as extending the hand rearward and closing the lid, while holding the bucket or the like. With this hand, the lid closing operation can be quickly performed by a simple operation of simply pulling the tank lid 14 forward.

  When the transplanter 1 performs fertilizer replenishment when the seedling carrier 7 is in the standard position, the stopper 42 is positioned closer to the body than the tank lid 14, and the seedling carrier 7 is similar to the conventional one. When the tank lid 14 is opened from the side of the fertilizer tank 12 in the extended or folded posture, the tank lid 14 is rotated approximately 180 degrees toward the rear as shown by the dotted line in FIG. 7 to open the fertilizer supply port. The upper portion of the fertilizer tank 12 can be widely released and the fertilizer can be supplied from the side of the fertilizer tank 12 without being obstructed by the tank lid 14.

Further, when it is desired to perform the fertilizer replenishment work from the front when the seedling carrier 7 is in the above-mentioned standard position, the operation lever 35 is unlocked and the outward rotation operation by the seedling carrier stand 22 is performed as described above. If the seedling conveyance stand 7 is fixed to the outward position, the front and upper side of the fertilizer tank 12 can be widely opened. Further, since the seedling carrier 7 is rotated to the outward position in a plane around the rotation fulcrum portion 25, the preliminary seedling is not slid down even when the preliminary seedling is placed. The posture can be changed smoothly to the position.
Therefore, since the seedling transport stand 7 can change the posture to the outward position while the spare seedling is placed, it is possible to efficiently perform the manure replenishing work from the front of the fertilizer tank 12 that is easy to work with an easy posture as needed. Features such as being able to.

Further, the seedling carrier 7 can rotate the front end on the heel side larger than the rear end of the seedling carrier 7 with a simple configuration in which the rotation fulcrum 25 is provided on the rear side of the support frame 19. In addition to being able to increase the rotation range on the heel side where assistants and the like supply seedlings, a wider space in front of the fertilizer tank 12 during fertilizer replenishment work performed by changing the posture of the seedling transport stand 7 to the outward position This makes it easy to replenish fertilizer.
In addition, a stopper 42 projecting from the lower portion of the seedling carrier 7 so that the seedling carrier 7 is detachably supported on the front side of the support frame 19 at the standard position is set to the outer position. At this time, since the tank cover 14 of the fertilizer tank 12 is held in an upright position, the fertilizer supply work performed from the front of the fertilizer tank 12 can be easily performed with a simple configuration.

1 transplanter (riding rice transplanter)
2 traveling machine body 6 planting device 7 seedling carrier 12 fertilizer tank 14 tank lid 19 support frame 25 rotation fulcrum portion 37 seedling carrier mounting portion 40 stopper support mechanism 42 stopper

Claims (1)

  A fertilizer tank (12) is disposed on the front side of the traveling machine body (2) provided with the planting device (6), and the support is erected from the traveling machine body (2) above the fertilizer tank (12). In the transplanting machine (1) provided with a seedling transporting base (7) supported by the frame (19) and transporting the spare seedling from the front to the rear of the machine body, the seedling transporting base (7) is supported by the support frame (19 ) Through the rotation fulcrum (25) of the fertilizer tank (12), and a position that can be freely changed to a standard position positioned in the front-rear direction and an outward position retracted from the upper side of the fertilizer tank (12). At the same time, the seedling carrier (7) is provided with a stopper (42) for holding and holding the tank lid (14) rotating up and down around a rotation fulcrum (14a) provided at the rear of the fertilizer supply port in an upright position. At the same time, the stopper (42) is accompanied by the change in the posture of the seedling carrier (7). In the standard position of the seedling carrier (7), it is located closer to the inside of the machine body than the tank lid (14), and at the outer position, it is located within the opening trajectory of the tank lid (14). Transplanter.

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