JP2008228669A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanter furnished with a land leveling rotor placed in front of a planting implement and leveling the land surface and effective for prevent the problems of the flow out of a planted seedling and the loss of the stability of the planted posture of the planted seedling to generate the falling down and damage of the planted seedling caused by the agitation of mud water pushed to the front side of the rotating leveling rotor and the flow of the mud water stagnating in front of the leveling rotor to the side of the adjacent planted seedling. <P>SOLUTION: A plurality of leveling member groups 52, ... acting on the field surface F according to rotation are composed of a plurality of rod members 51, ... placed nearly parallel to the rotary shaft 26 of the leveling rotors 25a-25e placing a prescribed interval between the rod members. The distance between the rod members of each leveling member group 52, ... and the rotation center P of the leveling rotors 25a-25e is gradually shortened from the back to the front side rod member in the rotary direction of the leveling rotors 25a-25e. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a transplanter such as a riding rice transplanter provided with a leveling rotor provided in front of a planting work machine and leveling a farm field by rotational driving.

Conventionally, a plurality of planting work machines are connected to each other through a lifting link mechanism provided at the rear part of the traveling machine body, and the farm scene is agitated and leveled in accordance with rotation in front of the planting work machine. By providing a resin leveling rotor comprising a plate-shaped leveling member and a connecting member that connects the leveling member to form a saddle shape as a whole, and rotationally driving the leveling rotor, thereby seedling planting position A riding rice transplanter that can perform a planting operation while leveling a front farm scene is known (see, for example, Patent Document 1).
JP 2004-105151 A (page 3-5, FIGS. 1 to 3)

By adopting a resin leveling rotor as described above, it is possible to obtain a reduction in driving power and a rust prevention effect by reducing the weight of the leveling rotor. And planting work at the same time, the surface of the water is struck by a plurality of plate-shaped leveling members that scrape and smooth the farm scene, which pushes the muddy water forward and creates waves on the front side of the leveling rotor. When the muddy water staying on the front side of the rotor flows into the adjacent planted seedling side, this planted seedling was washed away, or the planting posture was not stable and the planted plant fell down and damage occurred. .

An object of the present invention is to solve the above-mentioned problem, and a planting work machine is connected to a rear portion of the machine body so as to be movable up and down, and a leveling machine is provided in front of the planting work machine via a lateral rotation shaft. In the transplanter provided with the rotor for grounding, the leveling rotor has a plurality of leveling member groups that act on the field scene as it rotates, and the leveling member groups are predetermined substantially in parallel with the rotation axis of the leveling rotor. It is made up of a plurality of bar wires that are spaced apart from each other, and each leveling member group is arranged so that the distance from the rotation center of the leveling rotor becomes shorter as the bar wire on the front side of the leveling rotor rotates. This is the first feature.
A second feature is that the leveling member group is arranged at a predetermined interval in the rotational direction of the leveling rotor.

According to invention of Claim 1, the rotor for leveling provided in front of a planting work machine via a horizontal rotating shaft has a plurality of leveling member groups which act on a field scene with rotation, The leveling member Even if the ground leveling operation and the planting operation are simultaneously performed at a high amount of water or at a high speed by configuring a group of a plurality of rods and wires having a predetermined interval substantially parallel to the rotation axis of the leveling rotor, The leveling member group composed of a plurality of bar wires that scrape and smooth the farm scene is unlikely to cause a rippling phenomenon such as hitting the water surface and pushing forward muddy water like a conventional plate-shaped leveling member. Further, for each leveling member group, each leveling member group is arranged such that the distance from the rotation center of the leveling rotor becomes shorter as the bar wire on the front side in the rotation direction of the leveling rotor becomes shorter. When the bar wire enters the water surface (farm scene), it is possible to obtain a running trajectory in which muddy water can escape most upward from the gaps between the bar wire rods. Muddy water staying on the front side of the rotor flows into the adjacent planted seedling side, and this existing planted seedling is washed away, or the existing planted seedling collapses and damages due to unstable planting posture is unlikely to occur. Become. Moreover, by adopting a bar wire as a leveling member, the shearing and crushing action of mud and the weeding action of weeds growing in the field are improved.
And according to invention of Claim 2, the said leveling member group is arrange | positioned at predetermined intervals in the rotation direction of the leveling rotor, The said leveling member is made to stay in the front side of the leveling rotor, without retaining muddy water. Muddy water can be discharged smoothly and efficiently from between the groups to the rear of the leveling rotor.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a riding type rice transplanter 1 which is an example of a transplanting machine, and a lifting link mechanism 4 including a hydraulic cylinder 3 is provided at the rear part of the body frame 2 of the riding type rice transplanter 1. The planting work machine 5 is connected via the lift link mechanism 4 so as to be lifted and lowered, and a lower part of the machine body frame 2 is provided with a pair of left and right front wheels 6 and a rear wheel 7.

  The front of the machine body frame 2 is provided with a bonnet 8 that covers an engine or the like (not shown), and power output from the engine is transmitted by a hydraulic continuously variable transmission (not shown) and a power transmission device in a transmission case. The driving power and the planting power are distributed and transmitted to the pair of left and right front wheels 6 and rear wheels 7 and the planting work machine 5.

  In addition, a seat 9 on which an operator is seated is provided above the rear part of the body frame 2, and an operation panel 11 for displaying various monitors is provided in front of the seat 9, and a steering is provided above the operation panel 11. Below the steering wheel 12 and the steering handle 12, a step 14 for forming a floor surface of the control unit 13 is provided.

  More specifically, a link holder 15 is attached to the rear end of the elevating link mechanism 4, and a corner that supports the planting work machine 5 in a rolling manner on a rolling shaft 15a (see FIG. 2) provided in the link holder 15. A pipe-shaped planting frame 16 is provided horizontally. A pair of left and right seedling stage support frames 17 erected on the planting frame 16 support the seedling stage 18 so as to be able to reciprocate left and right in a front and rear low-tilt posture.

  A plurality of planting transmission cases 19 are attached to the rear lower portion of the planting frame 16 at a predetermined interval, and a chain transmission mechanism (not shown) and planting driving are installed in the planting transmission case 19. A pair of left and right transplanting rods 22 provided at both end portions of a planting device (rotary case) 21 assembled to the rear end portion of the planting transmission case 19 are rotationally driven via a shaft or the like. That is, the planting device 21 is equipped with a planetary gear mechanism (not shown) that can rotate the transplantation cage 22 along a predetermined locus along with its own rotation. One seedling is scraped from the mat mat seedlings placed side by side and can be continuously transplanted to the field.

  Under the planting transmission case 19, a center float (not shown) that acts as a hydraulic float for controlling the planting work machine 5 to a desired height and also serves as a leveling float for leveling the farm scene, It supports side float 24, which is a leveling float that erases the wheel marks of front wheel 6 and rear wheel 7 to level the farm scene, and these center float and side float 24 are grounded with their lower surface in contact with the farm scene. After the planting work machine 5 is lowered to the state where it is to be carried out, the transplanting work can be performed while the machine is running.

  Further, in the space S between the rear wheel 7 and the center float and the side float 24 described above, that is, in front of the planting work machine 5, as shown in FIGS. A ground leveling device 27 that supports the ground leveling device 25e through a laterally rotating (rotor) shaft 26 is disposed over substantially the entire width of the planting work machine 5, and the leveling rotors 25a to 25e are grounded to the field scene. By rotating and driving in such a state, it is possible to level and level the rough farm scene such as a rough farm scene or a headland in front of the seedling planting position by the transplanting rod 22.

  Next, the support structure of the leveling device 27 will be described. As shown in FIG. 3, an operation shaft 28 is pivotally supported on the upper part of a pair of left and right seedling support frames 17 erected from the planting frame 16, and at one end of the operation shaft 28. A U-shaped bracket 29 is fixed in a simple side view, and a lifting operation tool capable of changing the leveling device 27 to a working position for grounding the field scene and a retracted position separated from the field scene. A lifting operation lever 31 is attached.

  A rotating arm 32 is attached to both ends of the operating shaft 28, and a suspension arm 33 is suspended and connected to the tip of the rotation arm 32, and a planting frame is attached to the lower end of the suspension arm 33. A shaft 35 guided so as to move up and down is connected to a bracket 34 attached to 16, and a rotor shaft 26 of the leveling rotors 25 a to 25 e is pivotally supported by a boss portion 35 a fixed to the lower end of the shaft 35. .

  In addition, the seedling support frame 17 on the side where the lifting operation lever 31 of the leveling device 27 is provided is provided with a lever guide 36 having a plurality of stages of locking grooves 36a for the lifting operation lever 31. By locking the locking piece 31a provided in the elevating operation lever 31 at a desired position of the locking groove 36a, the storage position where the leveling rotors 25a to 25e are separated from the field scene and the leveling rotors 25a to 25e are Multi-stage adjustment can be made to a plurality of stages of action positions that contact the field scene.

  In the working position where the leveling rotors 25a to 25e come into contact with the field scene, the leveling rotors 25a to 25e can be adjusted within a range of 10 to 40 mm from the bottom surface of the center float and the side float 24. As shown in the running trajectory (see FIG. 6) of the plurality of bar wires 51,... Constituting the leveling member group 52 of the leveling rotors 25a to 25e, which will be described later (see FIG. 6), Field scene) Surface portion Y shallower than planting depth Z from F can be leveled.

  Next, the transmission system of the leveling device 27 will be described. On the front side of the rear axle case 41 disposed below the rear part of the machine body frame 2, engine power transmitted via a hydraulic continuously variable transmission (not shown) and a power transmission device in the transmission case is transmitted to the rear wheel 7. A distribution case 42 having a transmission mechanism that distributes the driving force and the driving force of the leveling rotors 25a to 25e and a clutch mechanism that connects and disconnects the transmission of the driving force to the leveling rotors 25a to 25e is provided. One power branched by the transmission mechanism in the distribution case 42 is transmitted to the transmission mechanism in the drive case 44 that rotationally drives the ground leveling rotors 25 a to 25 e via the transmission shaft 43. .

  Further, on the left and right sides behind the seat 9, there is provided a clutch lever 45 for turning on / off a clutch mechanism for connecting / disconnecting transmission of driving force to the above-described leveling rotors 25a to 25e (leveling device 27), By turning on and operating the clutch mechanism via the clutch lever 45, the leveling rotors 25a to 25e are rotated at a peripheral speed of about 1.5 to 2.5 times the vehicle speed, while the clutch mechanism is turned off. By operating, transmission of the driving force to the leveling rotors 25a to 25e can be cut off.

  By the way, the outer shape of the leveling rotors 25a to 25e described above is formed in a substantially hexagonal shape in a side view as shown in FIGS. 4 and 5, and the leveling rotor 25a is provided at a portion corresponding to each ridge angle. A horizontal leveling member group 52 consisting of a plurality of bar wires 51,... Substantially parallel to the rotary shaft 26 to 25e and having a predetermined interval is provided side by side, and these leveling member groups 52,. It has flat connecting members 53 and 53 to be connected. The connecting members 53 and 53 are integrally screwed to the disk-like flanges 55 and 55 fixed to both ends of the pipe bodies 54a to 54e fitted on the rotary shaft 26 by using bolts 56 and so on. It is.

  That is, the leveling rotors 25a to 25e are formed in a bowl shape as a whole, and the horizontal rotation shaft 26 of the leveling rotors 25a to 25e and the pipe bodies 54a to 54e that are externally fitted to the rotation shaft 26 are provided. The ground leveling rotors 25a to 25e can be mounted at desired positions of the rotary shaft 26 by inserting clevis pins 57 and 57 into the through holes H1 and H2 provided on both sides.

  More specifically, in the present embodiment, a spoke-like wire rod having a countersunk head 51a and an elbow 51b is adopted as the plurality of rod wire rods 51,... Constituting the leveling member group 52,. ,... Are arranged at predetermined intervals in the rotational direction of the leveling rotors 25a to 25e, so that even if the leveling work and the planting work are simultaneously performed at a high amount of water or at a high speed, The leveling member group 52,... Is unlikely to cause a rippling phenomenon such as hitting the water surface and pushing muddy water forward like a conventional plate-shaped leveling member.

  FIG. 6 shows the running trajectories of a plurality of bar wires (three in this embodiment) 51,... Constituting the leveling member group 52,. However, these groups (52) of the rods and wires 51,... Are separated from the rotation center P of the leveling rotor 26 so as to become the rods and wires 51 on the side of the leveling start (the rotation direction of the leveling rotor). Are arranged so as to shorten the distance. That is, as illustrated in a predetermined leveling member group G (52) in the figure, the distance from the rotation center P of each bar wire 51,... Constituting the leveling member group G is L1 <L2 <L3. When each bar wire 51,. An easy running trajectory can be obtained, which makes it difficult for waves to stand on the front side of the leveling rotors 25a to 25e, and the muddy water staying on the front side of the leveling rotors 25a to 25e flows into the adjacent planted seedling side. Conventional problems such as existing seedlings being washed away and planting postures being unstable and falling or damage of existing seedlings are less likely to occur. Moreover, by adopting the bar wire 51,... As the leveling member, the shearing and crushing action of mud and the weeding action of weeds growing in the field are improved.

  Further, since the leveling member group 52,... Described above is disposed at predetermined intervals in the rotational direction of the leveling rotors 25a to 25e (six in this embodiment), the leveling rotor 25a. The muddy water can be smoothly and efficiently discharged to the rear of the leveling rotors 25a to 25e from between the leveling member groups 52,. In addition, when using the leveling rotors 25a to 25e of the present invention for the field after scraping, and performing the planting operation at the same time, the running trajectory α of the predetermined leveling member group G is prevented so as to prevent excessive excessive scraping. Of the leveling rotors 25a to 25e so that the running locus β of the adjacent leveling member group G ′ immediately before the rotational direction with respect to the leveling member group G intersects with the portion B near the field surface in a side view. The rotation speed is set.

The side view of a riding type rice transplanter. The front view which shows the support structure of a leveling apparatus. The side view which shows the structure of a raising / lowering operation lever. The front view and left-right side view which show the structure of the leveling rotor. AA sectional view in FIG. 4 (sectional view of a leveling rotor). The running locus of a plurality of bar wires constituting the leveling member group.

Explanation of symbols

5 Planting machine 26 Rotating shaft 25a-25e Leveling rotor 51 Bar wire 52 Leveling member group F Field scene P Rotation center

Claims (2)

  The planting work machine (5) was connected to the rear part of the machine body so as to be able to move up and down, and a leveling rotor (25a to 25e) was provided in front of the planting work machine (5) via a horizontal rotation shaft (26). In the transplanter, the leveling rotors (25a to 25e) have a plurality of leveling member groups (52,...) That act on the farm scene (F) with rotation, and the leveling member groups (52,. Is composed of a plurality of bar wires (51,...) Substantially parallel to the rotating shaft (26) of the leveling rotor (25a to 25e) and having a predetermined interval, and each leveling member group (52,. ), The distance from the rotation center (P) of the leveling rotor (25a to 25e) becomes shorter as the bar wire on the front side in the rotation direction of the leveling rotor (25a to 25e) becomes smaller. Transplant machine.   The transplanter according to claim 1, wherein the leveling member group (52, ...) is arranged at a predetermined interval in the rotational direction of the leveling rotors (25a to 25e).

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