JP3081582B2 - 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, members (8a and 8b in FIG. 1 of the above-mentioned publication) are configured to connect between a plurality of planting cases 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 FIGS. 1 and 2) on one planting strip has increased. The overall weight of the attachment device is increasing. 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, the connection between a plurality of planting cases is connected by a plurality of pipe members. It becomes a state of being lined up (see FIG. 1 of the above-mentioned publication), 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 end surface of the pipe member and the lateral surface of the planting case. As a result, there is room for improvement in securing the overall strength of the seedling planting apparatus.

[0005] In addition, since a connection error in the left-right direction is likely to occur at the connection between the end face of the pipe member and the lateral face of the planting case, as described in Japanese Utility Model Application Laid-Open No. 62-99914 described above. With a configuration in which a plurality of planting cases are connected by a plurality of pipe members, the connection errors described above are accumulated along the left-right direction, and an error occurs in the positions of the planting claws on both the left and right sides. There is. SUMMARY OF THE INVENTION An object of the present invention is to provide a seedling transplanter for a rice transplanter, in which the strength of the entire seedling transplanter is sufficiently ensured and the occurrence of errors in the positions of the planting claws on both the left and right sides is suppressed. It is an object of the present invention to provide a structure capable of appropriately protecting the support rails.

[0006]

A feature of the present invention is that a seedling planting device for a rice transplanter is configured as follows. [1] Place a horizontally long horizontal frame along the left and right direction,
A plurality of planting cases formed separately from a traverse drive mechanism that reciprocally traverses and drives the seedling rest with a planting mechanism for planting seedlings on the rice field at the rear, parallel to each other, facing backward, And a transmission shaft for transmitting power to a plurality of planting cases.
It is installed across multiple planting cases outside the horizontal frame,
A support member is attached to the left and right ends of the horizontal frame, and protection members for protecting the left and right ends of a support rail that supports the lower part of the seedling rest so as to be able to reciprocate sideways are connected to the support member.

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

[0008]

According to the first aspect of the present invention, a plurality of planting cases are arranged in parallel with each other, in which a laterally long horizontal frame is arranged in the left-right direction, and a planting mechanism for planting seedlings on a rice field is provided at the rear. In this state, since the cantilever is continuously provided rearward on the outer side surface of the horizontal frame, a bending moment for bending the entire seedling plant in the left-right direction is applied to the horizontal frame.

In this case, as in the configuration of Japanese Utility Model Application Laid-Open No. 62-99914 described in "Prior Art", there are many connecting portions between the end surface of the pipe member and the lateral surface of the planting case along the horizontal direction. Since the state of being lined up does not occur in the horizontal frame according to the feature of claim 1, even if a bending moment for bending the entire seedling plant in the left-right direction is applied to the horizontal frame, the horizontal frame is not affected. Can withstand enough. According to the characteristic of claim 1, the planting case is formed separately from the traversing drive mechanism for reciprocally traversing the seedling rest, so that the planting case is relatively narrow. Is also relatively narrow.

In the horizontal frame according to the first aspect of the present invention, unless a large number of connecting portions between the end surface of the pipe member and the horizontal surface of the planting case are arranged in the left-right direction,
The state in which the left and right connection errors occurring at the connection between the end face of the pipe member and the lateral surface of the planting case are accumulated along the left and right directions does not occur in the horizontal frame. Does not cause an error in the position of the planting mechanism on both the left and right sides.

[II] When constructing a transmission system to a plurality of planting cases, a conventional system described in "Prior Art" is disclosed in Japanese Utility Model Application Laid-Open No. 62-999.
According to the configuration of Japanese Patent Application Publication No. 14, the power transmission shaft is arranged in a pipe member connecting between the plurality of planting cases, and power is transmitted to each of the plurality of planting cases. Accordingly, the connection between the end surface of the pipe member and the lateral surface of the planting case and the connection of the transmission shaft are performed at the same place, so that the structure is complicated and maintenance work is also difficult. . Further, when the bending moment for bending the entire seedling plant in the left-right direction is applied to the pipe member as described in [I] above, the aforementioned bending moment is also applied to the transmission shaft. Therefore, there is a possibility that fatigue of the transmission shaft and wear of bearings supporting the transmission shaft may be developed.

According to the first aspect of the present invention, when forming a transmission system to a plurality of planting cases, a transmission shaft for transmitting power to the plurality of planting cases is provided on the plurality of planting cases outside the horizontal frame. It is erected throughout. By dividing the connection between the horizontal frame and the planting case and transmitting the power to the planting case in this manner, the structure is simplified, and the maintenance work is also easy. Further, as described in [I] above, even if the bending moment for bending the entire seedling plant in the left-right direction is applied to the horizontal frame, the bending moment is directly applied to the transmission shaft. Therefore, it is possible to avoid fatigue of the transmission shaft and wear of bearings and the like that support the transmission shaft.

[III] Since the seedling-planting device is provided with the support rail for supporting the lower part of the seedling rest so as to be able to reciprocate and traverse, the protection members for protecting the right and left ends of the support rail of the seedling rest are provided. May prepare. In this case, in a seedling planting apparatus such as the configuration of Japanese Utility Model Application Laid-Open No. 62-99914 described in “Prior Art”, the support frame fixed to the outermost planting case is extended laterally outward. In many cases, a support frame is provided with a protective member. However, with this configuration, for example, when a large force is applied to the support frame by applying a protection member to an obstacle during traveling,
Since a large force is applied to the planting case via the support frame, the planting case may be damaged.

According to the first aspect of the present invention, the protection members for protecting the left and right ends of the support rail of the seedling rest are connected to the left and right sides of the horizontal frame. By connecting the protective member to the lateral frame having sufficient strength in this way, even if the protective member is applied to an obstacle during traveling, for example, a large force will be applied to the lateral frame. No large force is applied to the case. According to the first aspect of the present invention, the support member is attached to the left and right ends of the horizontal frame, and the protection member is connected to the support member. Since the left and right ends of the horizontal frame have corners, it is possible to accurately attach the support member to the left and right ends of the horizontal frame using the corners,
The protection member connected to the support member can be accurately positioned on both the left and right ends of the support rail of the seedling rest.

[IV] According to the feature of the second aspect, similar to the case of the first aspect, the "action" described in the above-mentioned [I], [II], and [III] is provided. It has various “actions”. 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.

[0016]

According to the first aspect of the present invention, in the seedling planting apparatus of the rice transplanter, the whole seedling planting apparatus is constructed by connecting the planting case to the outer surface of the horizontal frame in a cantilever manner in a rearward direction. As a result, it was possible to sufficiently withstand a bending moment that would bend in the left-right direction, and it was possible to improve the overall strength of the seedling planting apparatus. According to the feature of the first aspect, the planting case is relatively narrow in width formed separately from the traversing drive mechanism for reciprocally traversing the seedling mounting table. The structure for connecting the planting case to the horizontal frame is not too large because the part for connecting to the frame is relatively narrow, which is advantageous in terms of simplification of the structure. Becomes According to the features of the first aspect, it is possible to avoid a state in which the connection errors in the left and right directions are accumulated along the left and right directions, and to accurately set the positions of the planting mechanisms on both the left and right sides. became.

According to the first aspect of the present invention, by connecting the transmission shaft outside the horizontal frame over a plurality of planting cases, the connection between the horizontal frame and the planting case and the power to the planting case are provided. By dividing the transmission, the structure can be simplified and the maintenance work can be facilitated. Further, since the bending moment for bending the entire seedling plant in the left-right direction can be avoided from being directly applied to the transmission shaft, fatigue of the transmission shaft and wear of the bearings supporting the transmission shaft can be avoided. As a result, the durability of the transmission system of the planting device can be improved.

According to the first aspect of the present invention, the protective members for protecting the left and right ends of the support rail of the seedling rest are connected to the horizontal frame, so that the protective member can be brought into contact with obstacles during running. In addition, the planting case can be configured so that a large force is not applied to the planting case, thereby preventing the planting case from being damaged. In addition, it is possible to accurately position the protection members at the left and right ends of the support rail of the seedling rest, and to appropriately protect the left and right ends of the support rail of the seed stand.

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.

[0020]

Embodiments will be described below with reference to the drawings. FIG.
2 and FIG. 2 show a seedling planting device of a rice transplanter. In this seedling planting apparatus, seedlings for planting are placed, and seedlings 1 are taken out one by one from the lower end of the seedling rest 1 and the seedling rest 1 which are driven to reciprocate in a horizontal direction in a constant stroke. It is provided with six planting mechanisms 2, three leveling floats 3 and the like, and can be moved up and down via a link mechanism 4 at the rear of a riding type traveling body (not shown). It is connected to roll freely around Y around the left and right.

Next, the frame structure of the seedling planting apparatus will be described. As shown in FIGS. 1 and 2, a feed case 6 is attached to a pivot boss 5 formed on a rear link 4 a of the link mechanism 4 so as to be relatively rotatable around a longitudinal axis Y. A square pipe-shaped main frame 7 is connected to the lower part by bolts. The main frame 7 extends over substantially the entire width along the left-right direction. Power from the traveling machine body is transmitted to the feed case 6 via a power take-off shaft 8, and the power is transmitted to the seedling rest 1 provided inside the feed case 6 by a lateral feed drive mechanism (not shown) and a planting mechanism. 2 is transmitted.

Three planting cases 9 are connected to each other at predetermined intervals on the rear side of the outer surface of the main frame 7 in a state parallel to each other by bolts in a cantilever shape in a rearward direction. A planting mechanism 2 is provided on both left and right sides of a rear portion 9. The rotating case 11 is driven to rotate via a chain transmission mechanism 10 housed in the planting case 9, and is rotated by a cam mechanism (not shown) provided inside the rotating case 11 with the rotation of the rotating case 11. The planting mechanism 2 is configured so that the tips of the planting claws 12 attached to both ends of the case 11 move up and down while drawing a substantially elliptical locus.

As shown in FIGS. 1 and 2, a power take-out shaft 8 is provided via a transmission mechanism (not shown) of the feed case 6.
Is transmitted to a lateral drive shaft 17 located on the rear side of the main frame 7. The drive shaft 17 extends left and right on the rear side of the main frame 7, and is connected to the sprocket 1 on the front side of the planting case 9.
0a so as to transmit power. As described above, the feed case 6 is moved from the feed case 6 via the lateral drive shaft 17.
The power is branched and transmitted to the planting mechanism 2.

As shown in FIGS. 1 and 2, a lid 34 that closes the opening at both left and right ends of the main frame 7 is provided with a fulcrum of a ground stand 36 and a fulcrum bracket 39 of a marker 38. . As shown in FIGS.
An L-shaped connecting member 40 is connected to the inside of the opposite corners of the left and right side ends of the main frame 7 from outside of the front and rear side surfaces of the main frame 7 with bolts. A cylindrical boss 41 having a lateral axis is formed integrally at the center of the lid 34. A grounding stand 36 made of a round pipe material formed into an L-shape is inserted into the cylindrical boss 41 from the lateral outside, and is positioned and fixed by a fixing bolt 42.

As shown in FIGS. 1 and 2, a sliding rail 35 is provided to support the lower part of the seedling rest 1 so as to be able to reciprocate and reciprocate in the horizontal direction. Also, as shown in FIG. 2, it is configured to be positioned and fixed by the fixing bolt 42 even in the posture toward the rear side. Thereby, in the planting operation state, the protective member for the sliding rail 35 on the lower side of the seedling rest 1
The configuration is such that the ground stand 36 is also used.

As shown in FIGS. 3, 4, and 5, the fulcrum bracket 3 of the marker 38 is placed obliquely on the outer peripheral surface of the cylindrical boss 41.
9, a base end 38 a of the marker 38 is supported by a pivot boss 39 a formed on the fulcrum bracket 39, and the marker 38 is rotationally biased to a protruding posture by a spring 43. The configuration is such that the marker 38 is fixed at a predetermined position by the stopper pin 44 formed at 38 a contacting the upper edge of the fulcrum bracket 39. Wire 4 connected to stopper pin 44
5, the marker 38 is stored in conjunction with the raising operation of the seedling planting device. The main frame 7 is not limited to a square pipe shape, and may have any shape such as a round tube shape and a triangular tube shape.

[0027] In the claims, reference numerals are provided 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 an overall side view of a seedling planting apparatus.

FIG. 2 is a plan view showing a transmission system of the planting apparatus;

FIG. 3 is a side view of the vicinity of a lid at both left and right ends of the main frame.

FIG. 4 is a rear view of the vicinity of a lid at both left and right ends of the main frame.

FIG. 5 is an exploded perspective view of the vicinity of a lid at both left and right ends of the main frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seedling stand 2 Planting mechanism 7 Horizontal frame 9 Planting case 17 Transmission shaft 34 Support member 36 Protection member

Claims (2)

(57) [Claims] 1. A laterally long horizontal frame (7) is arranged along the left and right direction, and a planting mechanism (2) for planting seedlings on a rice field is provided at a rear portion thereof, and a seedling placing table (1) is reciprocated and laterally driven.
A plurality of planting cases (9) formed separately from the transverse feed drive mechanism are parallelly and rearwardly parallel to each other.
To be cantilevered on the outer surface of the drum (7)
And a transmission shaft for transmitting power to the plurality of planting cases (9).
(17) connecting the plurality of frames outside the horizontal frame (7).
A support member (34) is installed over the planting case (9), and is attached to the left and right ends of the horizontal frame (7).
And reciprocate the lower part of the seedling stand (1)
Protects the left and right ends of the support rail (35) that freely supports
Protection member (36) is connected to the support member (34).
Seedling planting equipment of a rice transplanter. 2. The seedling planting apparatus according to claim 1, wherein the planting case (9) is directly attached to and supported by the horizontal frame (7).