JP2938850B2 - Rice transplanter seedling planting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an entire structure of a seedling planting apparatus in a rice transplanter.

[0002]

2. Description of the Related Art As a whole structure of a seedling planting device in a rice transplanter, for example, as disclosed in Japanese Utility Model Application Laid-Open No. 62-99914, a planting claw for planting a seedling on a rice field (see FIG. 3) is provided at the rear of the planting case (7a, 7b in FIG. 1 of the above publication), and a plurality of planting cases are prepared according to the number of planting lines of the rice transplanter, and a plurality of pipes are prepared. In some cases, a plurality of planting cases are connected by members (8a and 8b in FIG. 1 of the above-mentioned publication) to constitute the entire seedling planting apparatus.

[0003]

In recent years, the number of rotary-type seedling planting apparatuses provided with a plurality of planting claws (see FIG. 4) in one planting strip has increased. The overall weight is getting heavier. Therefore, in the riding type rice transplanter, since the left and right central portions of the seedling planting device are supported by the link mechanism of the traveling body, as described above, when the entire weight of the seedling planting device becomes heavy, the seedling planting device becomes heavy. The bending moment for trying to bend the whole in the left-right direction increases.

On the other hand, the aforementioned Japanese Utility Model Application Laid-Open No. 62-99914.
As described in Japanese Patent Application Laid-Open Publication No. H10-209, a configuration in which a plurality of planting cases are connected by a plurality of pipe members is such that a large number of connecting portions between the pipe members and the planting cases are arranged in the left-right direction. 1), and a bending moment for bending the entire seedling plant in the left-right direction is applied to each of the connecting portions between the pipe member and the planting case. There is room for improvement in terms of securing the overall strength of the device.

[0005] Further, since a connecting error between the pipe member and the planting case is likely to occur in the left-right direction at the time of assembling, a plurality of pipe members are used as described in Japanese Utility Model Application Laid-Open No. 62-99914. In a configuration in which a plurality of planting cases are connected to each other, the above-described connection errors are accumulated along the left-right direction, and an error may occur in the positions of the planting claws on both the left and right sides. An object of the present invention is to provide a seedling planting device for a rice transplanter, which ensures a sufficient strength of the entire seedling planting device, and suppresses the occurrence of errors in the positions of the planting claws on both the left and right sides. It is an object of the present invention to provide a structure in which a lateral feed shaft that drives a seedling rest reciprocally in a lateral direction can be appropriately supported and arranged.

[0006]

A feature of the present invention is that a seedling planting device for a rice transplanter is configured as follows. [1] A plurality of planting cases equipped with a planting mechanism for planting seedlings on a rice field surface at the rear by arranging a horizontally long transverse frame along the left-right direction, and a cantilever facing rearward in parallel with each other. And a driving unit that supports one end of the transverse feed shaft and rotationally drives the transverse feed shaft is fixed to the transverse frame. , A supporting member for rotatably supporting the other end of the transverse feed shaft is fixed to the transverse frame, and the transverse feed shaft is shifted so that the transverse center of the transverse feed shaft is deviated to one of the left and right with respect to the transverse center of the transverse frame. Are arranged, and the lateral feed shaft is rotationally driven, so that the seedling rest is reciprocally laterally driven along the left-right direction.

[2] In the configuration of [1], the planting case is directly attached to and supported by the horizontal frame.

[0008]

[I] According to the feature of the first aspect, a plurality of planting cases in which a laterally long horizontal frame is arranged along the left-right direction and a planting mechanism for planting seedlings on a rice field is provided at the rear portion are parallel to each other. In the state,
Since the rear side of the seedling plant is continuously connected to the horizontal frame in a cantilever manner, a bending moment for bending the entire seedling plant in the left-right direction is applied to the horizontal frame.

In this case, a state in which a large number of connecting portions between the pipe member and the planting case are arranged in the left-right direction as in the configuration disclosed in Japanese Utility Model Application Laid-Open No. 62-99914 described in "Prior Art". Does not occur in the horizontal frame according to the first aspect of the present invention, so that even if the bending moment for bending the entire seedling plant in the left-right direction is applied to the horizontal frame, the horizontal frame sufficiently withstands. be able to.

Further, in the horizontal frame according to the first aspect of the present invention, unless there is a state in which a large number of connecting portions between the pipe member and the planting case are arranged in the left-right direction, the connection between the pipe member and the planting case. The state that the connection errors in the left and right direction generated in the part are accumulated along the left and right direction does not occur in the horizontal frame, so by the accumulation of the connection errors described above, the position of the planting mechanism on both the left and right sides A state where an error occurs does not occur.

[II] In the seedling planting apparatus, the seedling rest is supported so as to be capable of reciprocating and laterally reciprocating in the left-right direction, and is provided with a transverse feed shaft for driving the seedling rest reciprocally in the left-right direction. The planting mechanism is configured to take out the seedlings from the seedling rest and plant the seedlings on the rice field while the seedling rest is driven to reciprocate horizontally in the left-right direction.

According to the first aspect of the present invention, the drive case and the support member for supporting both ends of the transverse feed shaft are fixed to the transverse frame, so that both ends of the transverse feed shaft are stabilized on the support frame having sufficient strength. It is in a state of being supported. Thus, when the transverse feed shaft is rotationally driven by the drive unit, the transverse feed shaft is smoothly driven to rotate with little resistance, and the seed feeder is smoothly reciprocated in the left-right direction by the transverse feed shaft.

[III] In the riding type rice transplanter, the right and left central portions of the seedling planting device are supported by the link mechanism of the traveling machine body. In this case, according to the features of claim 1, the transverse feed shaft is arranged so that the left and right center of the transverse feed shaft is deviated to one of the left and right with respect to the left and right center of the transverse frame. The horizontal feed shaft is slightly deviated to one of the left and right sides from the connecting portion of the link mechanism. Thus, according to the features of claim 1, maintenance work in the vicinity of the transverse feed shaft (for example, replacement of the transverse feed shaft, application of grease to the transverse feed shaft, adjustment of the connection between the transverse feed shaft and the seedling rest, etc.) Can be easily performed without disturbing the connecting portion of the link mechanism in the seedling planting apparatus.

[IV] According to the feature of claim 2, similar to the case of claim 1, the "action" described in the above items [I] to [III] is provided,
In addition, it has the following “action”. According to the second aspect of the present invention, the planting case is directly attached to and supported by the horizontal frame, so that the structure for attaching the planting case to the horizontal frame can be simplified.

[0015]

According to the first aspect of the present invention, in the seedling planting apparatus of the rice transplanter, the entire seedling planting apparatus is arranged in the horizontal direction by connecting the planting case to the horizontal frame in a cantilevered manner. It became possible to sufficiently withstand the bending moment to be bent, and the overall strength of the seedling planting apparatus could be improved. According to the features of claim 1,
It is possible to avoid a state where the connection errors in the left-right direction are accumulated along the left-right direction, and it is possible to accurately set the positions of the planting mechanisms on both the left and right sides.

According to the first aspect of the present invention, both ends of the transverse feed shaft are stably supported by the support frame having sufficient strength, and the transverse feed shaft is smoothly driven to rotate with little resistance. Since the stand is smoothly driven back and forth in the left and right direction, the planting mechanism can smoothly take out the seedling from the seedling mounting stand and plant it on the rice field, improving the planting performance of the seedling planting device I was able to.

According to the first aspect of the present invention, by arranging the transverse feed shaft at a position slightly deviated to the left or right from the connection portion of the link mechanism in the seedling planting apparatus, maintenance work near the transverse feed shaft is facilitated. The workability of the seedling planting apparatus was able to be improved.

According to the feature of claim 2, the "effect of the invention" of the above-mentioned claim 1 is provided similarly to the case of the claim 1, and in addition to the "effect of the invention", the following "invention" is provided. Of the effect. Since the planting case is directly attached to and supported by the horizontal frame as in the feature of the second aspect, the mounting structure of the planting case to the horizontal frame can be simply configured. The overall configuration of the planting device could be simplified and lightened.

[0019]

Embodiments will be described below with reference to the drawings. FIG.
The rear of the riding rice transplanter is shown in FIG. This rice transplanter has a link mechanism 1 at the rear of the riding type traveling body,
The seedling planting apparatus 2 is configured to be freely movable up and down and rolling around the longitudinal axis. The seedling planting device 2 is a planting transmission case 4 (corresponding to a driving unit) that is connected to the pivot boss member 3 of the link mechanism 1 so as to be freely rollable around the longitudinal axis.
A horizontal frame 5 which is disposed over substantially the entire width in the left-right direction and is made of a square pipe-shaped aluminum drawn material.
Are fixed, and a plurality of planting cases 6 are attached to the horizontal frame 5 at appropriate intervals in a cantilever manner in a rearward direction in parallel with each other. The seedling rest 7 is supported.

Planting mechanisms 8 are provided on both left and right sides of the rear part of the planting case 6, and the planting claws 8a of the planting mechanism 8 take out the seedlings one by one from the lower end of the seedling rest 7 and place them on the rice field. It is configured to be planted. As shown in FIGS. 1 and 4, a protrusion for vertically feeding the seedlings by a predetermined amount toward the planting mechanism 8 at the stroke end of the lateral movement of the seedling mounting 7 on the seedling mounting surface 7 a of the seedling mounting 7. An endless rotating belt type vertical feeding device 9 is provided. As shown in FIG. 4, a rotation support shaft 11 is supported over a boss 10 formed on each of the planting cases 6, and three support arms integrally extended from the rotation support shaft 11. A ground float 13 is pivotally connected to an end of the base 12.

Next, a transmission system for the seedling planting apparatus 2 will be described. As shown in FIGS. 2 and 4, the transmission shaft 14 and the bevel gear mechanism 15 of the planted transmission case 4
, Power is transmitted to the lateral input shaft 16, and the power is transmitted from the input shaft 16 via the gear-type transmission mechanism 17 to the left laterally outward from the planted transmission case 4 while being supported by the planted transmission case 4. It is transmitted to a projecting screw shaft 18 (corresponding to a transverse feed shaft). As shown in FIGS. 1 and 3, the outer end of the screw shaft 18 is
The screw shaft 18 is supported by a bracket 19 (corresponding to a support member) fixed to the horizontal frame 5, and the screw shaft 18 is shifted so that the left and right center of the screw shaft 18 is deviated to one of the left and right with respect to the left and right center of the horizontal frame 5. Are located.

As shown in FIGS. 1 and 3, a spiral groove 20 is formed on the outer peripheral surface of the screw shaft 18, and a cylindrical member 22 having a frame member 21 engaged with the screw groove 20 is attached to the screw shaft 18. A connecting tool 24 fitted outside and connected via a bracket 23 fixed to the back surface of the seedling rest 7 is inserted and connected to the tubular member 22 so as to move laterally integrally in the left-right direction. It is locked. Thus, a lateral feed mechanism A that reciprocates and drives the seedling rest 7 at a predetermined pitch by the engaging action of the spiral groove 20 and the top member 21 with the rotation of the screw shaft 18 is configured.

As shown in FIG. 2, power is transmitted from the input shaft 16 to a horizontal rotating shaft 27 via a gear transmission mechanism 26. As shown in FIGS. 1, 2, and 3, the rotating shaft 27 is supported by the planting transmission case 4 like the screw shaft 18, and is disposed so as to protrude leftward and laterally outward from the planting transmission case 4. Supports the outer end. A pair of left and right rotating cams 29 are attached to the rotating shaft 27, and at the stroke end of the lateral movement of the seedling placing stand 7, the rotating cam 29 is connected to the vertical feeding device 9 as shown in FIG. , And the endless rotating belt with projections is rotated by a predetermined amount at a time to feed the seedlings vertically by a predetermined amount. Contact arm 30
Is urged by a spring to return to a predetermined standby position.

As shown in FIG. 2, power is transmitted from the rotating shaft 27 to the transversal shaft 32 via the transmission chain 31. As shown in FIGS. On the outer side of the transmission case 4, power is transmitted from the horizontal shaft 32 to the input shaft 34 of the planting case 6, and the planting mechanism is provided via a chain transmission mechanism (not shown) provided in the planting case 6. Power is transmitted to 8.

As shown in FIGS. 2, 1, and 4, the operating tool 36 of the gear transmission mechanism 17 of the screw shaft 18 is disposed on the opposite side of the planting transmission case 4 from the screw shaft 18 (laterally right outward). ing. As shown in FIG. 2, in the gear transmission mechanism 17, a plurality of drive gears 37 having different outer diameters are idlely fitted to the input shaft 16, and a plurality of driven gears 38 that mesh with the drive gear 37 rotate integrally with the screw shaft 18. A shift key 39 that is freely fitted to the outside and is freely shiftable in the axial direction and selectively engageable with the drive gear 37 is disposed inside the input shaft 16.

As shown in FIG. 2, a shift operation is performed by operating a shift key 39 with an operating tool 36 and a drive gear 37 having a different speed ratio is selectively rotated integrally with the input shaft 16 to perform a speed change operation. I have. As shown in FIG. 4, the pivot support shaft 1 is provided on the operation tool 36 side of the planting transmission case 4.
A planting depth adjusting lever 40 is provided for changing the fulcrum position of the ground float 13 by rotating the plant 1 to change the planting depth of the seedling by the planting claw 8a.

Instead of the pair of left and right rotating cams 29 shown in FIGS. 1, 3 and 4, one rotating cam 29 is provided, and two contact arms 30 on the side of the seedling holder 7 are provided. At the stroke end of the lateral movement of the table 7, one of the contact arms 30 may be configured to be rotated by the rotary cam 29.

In the claims, the reference numerals are used to facilitate comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a cutaway rear view of a seedling planting apparatus.

FIG. 2 is a longitudinal rear view of the planting transmission case.

FIG. 3 is a plan view showing a lateral feed mechanism.

FIG. 4 is an overall side view of the seedling planting apparatus.

[Explanation of symbols]

 Reference Signs List 4 driving unit 5 horizontal frame 6 planting case 7 seedling rest 8 planting mechanism 18 lateral feed shaft 19 support member

Claims (2)

(57) [Claims] 1. A plurality of planting cases (6) provided with a planting mechanism (8) at a rear portion thereof, in which a laterally long horizontal frame (5) is arranged along the left-right direction, and a planting plant is planted on a rice field. A lateral feed shaft (18) for reciprocally laterally driving a seedling stand (7) in a left-right direction, while being configured to be continuously connected to the horizontal frame (5) in a cantilever manner in a rearward direction. A driving unit (4) that supports one end of the shaft (18) and rotationally drives the transverse feed shaft (18) is fixed to the transverse frame (5), and the other end of the transverse feed shaft (18) is rotated. A support member (1
9) is fixed to the lateral frame (5), and the lateral feed is carried out so that the lateral center of the lateral feed shaft (18) is deviated to one of left and right with respect to the lateral center of the lateral frame (5). A seedling of a rice transplanter, wherein a shaft (18) is arranged and the transverse feed shaft (18) is rotationally driven to reciprocate laterally drive the seedling mounting table (7) in the left-right direction. Planting equipment. 2. The seedling planting apparatus for a rice transplanter according to claim 1, wherein the planting case (6) is directly attached to and supported by the horizontal frame (5).