JP3108501B2 - 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 main body, as described above, if the entire weight of the seedling planting device becomes heavy, The bending moment for bending the entire body 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. An object of the present invention is to provide a seedling planting device for a rice transplanter, in which the strength of the entire seedling planting device 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 be able to appropriately support a seedling rest driven by a reciprocating transverse drive.

[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 laterally elongated horizontal frames are arranged along the left-right direction, and a plurality of transmission mechanisms are provided separately from a transmission mechanism that includes a planting mechanism for planting seedlings on a rice field surface at a rear portion and that reciprocally laterally drives a seedling rest. The planting cases are arranged to be parallel to each other, facing backward, and cantilevered on the outer surface of the horizontal frame, and a transmission shaft for transmitting power to a plurality of planting cases is provided outside the horizontal frame. A support frame is erected on the right and left sides of the horizontal frame so as to extend over a plurality of planting cases.

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

[3] In the configuration according to the above item [1] or [2], with respect to the seedling rest arranged obliquely upward on the front side, it is inclined obliquely upward forward along the front side of the seedling rest. The support frame is erected.

[0009]

[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 cantilever is continuously provided rearward on the outer 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, there are many connecting portions between the end face of the pipe member and the lateral face of the planting case along the left-right direction as in the configuration of Japanese Utility Model Application Laid-Open No. 62-99914 described in "Prior Art". 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 feature of the first aspect, the planting case is formed separately from the transmission mechanism for driving the seedling rest reciprocatingly in the lateral direction, so that the planting case is relatively narrow, and the planting case is horizontally moved. The part to be connected to the frame is also relatively narrow.

[0011] In the horizontal frame according to the first aspect of the present invention, unless a state occurs in which 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] According to the configuration of Japanese Utility Model Laid-Open No. 62-99914 described in "Prior Art" when connecting a transmission system to a plurality of planting cases, the plurality of planting cases are connected. A transmission shaft is arranged in the pipe member so as to transmit power 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 connected to 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] In the seedling planting apparatus, the seedling nest is supported so as to be reciprocally traversed in the left-right direction, and the planting mechanism is configured to take out the seedling from the seedling nest and plant it on the rice field. Have been. Since the seedling rest is long in width and length, it is necessary to support the upper and lower parts of the seedling rest so that they can be reciprocated sideways in the horizontal direction. The lower part of the seedling rest is generally supported by the planting case. Often.

According to the first aspect of the present invention, the support frame is erected on the right and left sides of the horizontal frame, and the upper part of the seedling rest is supported on the support frame so as to be reciprocally reciprocable in the left-right direction. As a result, the upper part of the seedling rest is stably supported by the support frame erected on the horizontal frame having sufficient strength, and the seedling rest is driven in a stable and smooth reciprocating side-to-side reciprocating drive. Is done.

[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.

[V] According to the feature of the third aspect, similar to the case of the first or second aspect, the "action" described in the above-mentioned [I] to [IV] is provided. It has various “actions”.
In the seedling planting apparatus, the seedling rest is disposed obliquely upward and forward, and according to the features of claim 3, the support frame is inclined forward and obliquely upward along the front side of the seedling rest to form a horizontal frame. It is erected. When the support frame is arranged along the seedling rest as in the feature of claim 3, the distance between the seedling rest and the support frame is not so large,
And the state where the support frame is arranged close to the seedling rest is obtained.

[0018]

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 has a relatively small width formed separately from the transmission mechanism for driving the seedling rest reciprocally in the reciprocating direction, and connects the planting case to the horizontal frame. Since the part to be installed is relatively narrow, the structure for connecting the planting case to the horizontal frame is not too large, which is advantageous in terms of simplification of the structure. . 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 to a plurality of planting cases outside the horizontal frame, 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 upper portion of the seedling rest is stably supported by the supporting frame erected on the horizontal frame having sufficient strength, and the seedling rest is stably and smoothly left and right. Since the reciprocating transverse drive was performed in the direction, the planting mechanism smoothly took out the seedlings from the seedling mounting stand and planted them on the rice field, thereby improving the planting performance of the seedling planting device. .

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. 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.

According to the features of claim 3, claim 1 or 2
"Effects of the Invention" of Claim 1 or 2 as in the case of
In addition to this “effect of the invention”, the following “effect of the invention” is provided. According to the feature of the third aspect, the support frame is erected obliquely upward on the front side along the front side of the seedling stand and is erected on the horizontal frame, so that the distance between the seedling stand and the support frame is too large. It is possible to obtain a state in which the support frame is not disposed and a state in which the support frame is arranged close to the seedling rest, and the entire seedling plant including the seedling stand and the support frame can be made compact.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, in a seedling planting apparatus which is connected to a main body of a riding type rice transplanter by a link device 1 so as to be able to move up and down, a reciprocating lateral feed drive is performed in a left-right direction with a constant stroke. Seedling rest 2 to be taken, eight rows of planting claws 3 for taking out and planting one seedling from the lower end of the seedling rest 2, and a ground float 4 for supporting the seedling planting device and leveling the planting surface Etc. are provided.

As shown in FIGS. 1, 2, and 3, the link device 1
The transmission case 6 is connected to the boss portion 5 in a rolling manner, and a horizontally long horizontal frame 7 extending in the left-right direction is connected to the transmission case 6, and the four planting cases 8 are parallel to each other. Thus, it is attached to the outer surface of the horizontal frame 7 in a cantilever manner facing backward. Two sets of rotary planting claws 3 are provided on the left and right of the rear part of the planting case 8. The planting claw 3 is interlocked with the transmission mechanism of the case 8 and the transmission shaft 10 erected over the planting case 8 outside the horizontal frame 7, and
Is configured to be driven.

As shown in FIG. 2, between the transmission shaft 10 and the transmission mechanism of the planting case 8, there are provided respective clutches 11 similar to known fixed position stop clutches. The planting claws 3 for two rows are configured to be stopped, so that a few rows can be planted near the ridge.

As shown in FIGS.
On the right side and the left side of the brace, a support 12 is erected, and the seedling rest 2 is arranged obliquely upward and forward.
The support column 12 is disposed so as to incline obliquely upward on the front side along the back surface (front side) of the vehicle. A horizontal stay 1 that supports a rail 13 connected to the back of the seedling rest 2 movably in the left-right direction.
2a is provided over the upper portions of both columns 12, and an operating lever 14 for operating each strip clutch 11 separately.
Are provided on the column 12 two by two.

As shown in FIGS. 4 and 5, the support 12 has a substantially U-shaped cross section, and a support shaft 15 that supports the operation lever 14 so as to be able to swing up and down is directly inside the support 12. A receiving member 17 for the outer wire 16a of the release wire 16 that connects the operation lever 14 and each of the strip clutches 11 is directly mounted inside the support column 12, and a portion of the release wire 16 on the operation lever 14 side. Are arranged inside the column 12.
The operation lever 14 is passed through an inverted L-shaped guide hole 18 formed on the side surface of the support 12, and the support 12 is
The operating lever 14 is configured to be guided to an upper cutting position and a lower entering position.

As shown in FIG. 1, the reciprocating lateral feed driving of the seedling placing table 2 in the left and right direction is performed by reciprocating driving of the lateral feed shaft 19 by the transmission mechanism of the transmission case 6. The belt-type vertical feed device 20 is provided on the mounting table 2, and every time the seedling mounting table 2 reaches the stroke end of the reciprocating horizontal feeding drive, the vertical feeding device 20 is configured to feed the seedling by a certain distance to the takeout side. Driven.

As shown in FIG. 1, a seedling rest 2 on which two mat-shaped seedlings are placed in tandem is bent to form a lower portion X from the lower end to near the upper part of the vertical feeding device 20. It is straight and has a gentler inclination (less than 55 degrees) than the conventional one, and is configured to prevent poor seedling feeding due to sliding of the seedling with respect to the vertical feeding device 20. The middle portion Y of the seedling rest 2 is formed to have a steeper slope than in the past, so that the sliding of the seedlings is improved and the continuous feeding of the seedlings is ensured. The upper part Z of the seedling rest 2 is formed to the same extent as the conventional one, and the upper seed Z of the lower seedling is prevented from being pierced and lifted by the load of the upper seedling. It is configured such that the front-back dimension L of the seedling rest 2 is substantially the same as that of the related art.

[Another Example] The number of planting claws 3, the number of the respective line clutches 11, and the number of planting claws 3 to be operated can be appropriately changed. When the operating lever 14 and each clutch 11 are connected by a release wire 16, as shown in FIGS. 6 and 7, two release wires 16 connected to each other clutch 11 are connected to two operating levers. 14, the connecting positions are connected to be different in the longitudinal direction of the operation lever 14, and a substantially F-shaped guide hole 21 is formed in the support column 12, so that both of the line clutches 11 are engaged at a lower engagement position. Alternatively, the outer two clutches may be in the stopped state at the outer disconnection position raised by one step, and both the respective clutches 11 may be in the disengaged state at the disconnected position pulled up by two steps. In other words, the configuration is such that the eight setting claws 3 are operated by the four clutches 11, and the four clutches 11 are operated by the two operation levers 14. Alternatively, a desired planting form may be selected from five kinds of planting forms, that is, six-row planting on either side and four-row planting on either side.

When the cross section of the column 12 is formed in a substantially U-shape, it can be appropriately changed, for example, to a shape close to a C-shape as shown in FIG. Further, the opening on the side surface of the column 12 may be closed with an openable lid. As shown in FIG.
A guide hole 21 for projecting the operation lever 14 of each clutch 11 may be formed on the front surface of the clutch.
The support member 15 for the support shaft 15 of the operation lever 14 and the outer wire 16a of the release wire 16 is
The structure directly attached to the inside of the can be appropriately changed.

Incidentally, reference numerals are written in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling planting device connected to a riding type rice transplanter.

FIG. 2 is a plan view of the seedling planting apparatus.

FIG. 3 is a front view of the seedling planting apparatus.

FIG. 4 is a cross-sectional view seen from the AA direction in FIG. 3;

FIG. 5 is a cross-sectional view as viewed from the BB direction in FIG. 4;

FIG. 6 is a vertical cross-sectional front view of a column in another embodiment.

FIG. 7 is a cross-sectional view taken along the line CC in FIG. 6;

FIG. 8 is a cross-sectional plan view of a column in another embodiment.

FIG. 9 is a perspective view of the vicinity of a support and an operation lever in another embodiment.

[Explanation of symbols]

 2 Nursery stand 3 Planting mechanism 7 Horizontal frame 8 Planting case 10 Transmission shaft 12 Support frame

Claims (3)

(57) [Claims] 1. A laterally elongated horizontal frame (7) is arranged along the left-right direction, and a planting mechanism (3) for planting seedlings on a rice field is provided at the rear, and a seedling mounting table (2) is reciprocated and laterally driven.
A plurality of planting cases (8) formed separately from the power transmission mechanism are parallel to each other and rearwardly facing each other.
If it is configured to be cantilevered on the outer surface of (7),
Both transmission shaft for transmitting power to the plurality of planting case (8)
(10), the outside of the horizontal frame (7)
Planting bridged over the casing (8), the lateral frame (7) right side and upright support frame (12) on the left side of the front of the upper portion of the seedling platform (2) <br / > A seedling planting device of a rice transplanter which is supported on the support frame (12) so as to be reciprocally traversable in the left-right direction. 2. The seedling planting apparatus for a rice transplanter according to claim 1, wherein the planting case (8) is directly attached to and supported by the horizontal frame (7). 3. A support frame (12) is tilted obliquely upward and forward along a front side of the seedling mount (2) with respect to a seedling mount (2) arranged obliquely upward and forward. 3. The seedling planting device for a rice transplanter according to claim 1, wherein the planting device is erected.