JPH10248332A - Rice transplanter for multi-row planting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice transplanter for multi-row planting, by which proper land grading and planting are executed by rational float arrangement. SOLUTION: The rice transplanter for multi-row planting is constituted by respectively arranging a T-shaped center float 12A for executing the land grading of two rows in the center of a seedling planting device, almost U-shaped and wide side floats 12B for executing the land grading of three rows in the left and the right of the center float 12A and, moreover, the T-shaped side float 12C for executing the land grading of two rows in the outer side parts of the side floats 12B so that planting for the twelve rows are enabled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter for multi-row planting, which is constructed so that ten or twelve rows can be planted.

[0002]

2. Description of the Related Art Conventionally, rice transplanters have been configured to plant four, five, six, or eight rows of rice.

[0003]

However, in recent years, in order to improve the efficiency of rice planting work, there has been a demand for early development of a rice transplanter for multi-row planting capable of planting ten or twelve rows. I have.

[0004] It is an object of the present invention to provide a rice transplanter for multi-row planting, which can perform appropriate leveling and planting with a reasonable float arrangement.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, in a rice transplanter for multi-row planting, two right and left centers of a seedling planting device are provided. A T-shaped center float for leveling, a wide, approximately Π-shaped side float for three-step leveling on the left and right sides of the center float, and a two-step leveling on the outside of the side float Each of the T-shaped side floats to be performed is arranged so that twelve rows can be planted.

According to the first aspect of the present invention, for example, six T-cells for leveling two rows in a seedling planting apparatus are provided.
The number of floats can be reduced and the number of members constituting the support structure can be reduced compared to a case where twelve-row planting is possible by arranging character-shaped leveling floats in parallel in the left and right direction Can be reduced, so that the configuration can be simplified and the manufacturing cost can be reduced. In addition, a wide, approximately Π-shaped side float that performs three-step leveling is arranged on the left and right sides of a T-shaped center float that performs two-step leveling, so that it is generally placed across four steps. Side floats are located behind the front wheels and the rear wheels that are arranged so as to straddle the six tracks, and the wheel traces are surely leveled, so that appropriate planting that is not adversely affected by the wheel traces can be performed Become like

Further, in the above-mentioned comparative example, the center float does not exist by arranging the six leveling floats in parallel. Since the center float is located at the center on the left and right, the seedlings are planted so that the seedling planting device is located at a predetermined ground height based on the vertical swinging displacement of the leveling float during traveling during planting work. By controlling the raising and lowering of the device, the automatic raising and lowering control of maintaining the planting depth by the seedling planting device at the appropriate depth, the connection with the traveling machine to the vertical swing displacement accompanying travel during planting work This can be performed based on the vertical swing displacement of the center float, which hardly includes the vertical swing (so-called rolling swing) component of the seedling planting device serving as the fulcrum. In other words, according to the first aspect of the present invention, the automatic ascent / descent control can be performed with higher accuracy than in the above-described comparative example, so that more appropriate leveling and planting can be performed.

Further, for example, a T-shaped center float for leveling two rows at the left and right center of the seedling planting apparatus, a T-shaped side float for leveling two rows on the left and right sides of the center float, and In a case where twelve-row planting is made possible by arranging wide, approximately square-shaped side floats that perform three-row leveling on the outer side of the side floats, the planted seedlings are At the right and left sides of the seedling planting equipment near the plant, there will be approximately Π-shaped side floats, which are wider and cause more mudging and waving, so appropriate leveling by each float during planting work Is carried out, the wide side floats located on the left and right sides of the seedling plant will increase the mud pushing and waving, and the planting posture of the planted seedlings will be disturbed or the planted seedlings will fall down. However, in the invention according to claim 1, the right and left side ends of the seedling planting device close to the already planted seedlings are more than the substantially Π-shaped side floats that perform three-row leveling. Since the T-shaped side floats for leveling two narrow rows are located, the planting is performed in comparison with the case where the substantially Π-shaped side floats are located on both left and right ends of the seedling planting device. Mud pushing and waving caused by side floats on the left and right sides at the time of work can be reduced, so that the planting posture of already planted seedlings is disturbed by mud pushing and waving caused by the side floats at the left and right sides at the time of planting work or It becomes possible to suppress the occurrence of inconvenience such as the lodging of the already planted seedlings.

[Effect] Accordingly, a T-shaped center float for leveling two rows is provided at the center on the left and right sides of the seedling planting apparatus, and a wide and substantially flat area for leveling three rows on the left and right sides of the center float.
The rational float arrangement of arranging the T-shaped side floats on the outside of the side floats, and performing T-shaped side floats for leveling two staves, further simplifies the configuration and reduces the manufacturing cost. As well as being able to reduce it, it is possible to suppress the dislocation and lodging of the planting posture of the already planted seedlings,
It has become possible to provide a rice transplanter for twelve-row planting that can perform more appropriate leveling and planting.

According to the second aspect of the present invention,
In a rice transplanter for multi-row planting, a T-shaped center float for leveling two rows is provided at the center on the left and right of the seedling planting device, and a wide square character for leveling three rows on the left and right sides of the center float. A U-shaped side float for leveling one line is disposed on the outer side of the side float, and a U-shaped side float is disposed at an outer end of the U-shaped side float. A leveling board for leveling was installed to enable twelve-row planting.

According to the second aspect of the present invention, there is provided a two-stage leveling machine disposed on the left and right ends of the seedling planting device according to the first aspect of the present invention. A U-shaped side float that performs a leveling of one strip that is narrower than the T-shaped side float that performs the T-shaped side float is provided, and the outer width of the side float is further wider than the U-shaped side float. The T-shaped side floats are installed on both left and right ends of the seedling planting equipment because the ground is set up so that the soil can be leveled for one row while the muddy water is passed from above, which is narrow and thin. 2. The method according to claim 1, wherein
Compared with the invention of the described invention, the side floats at the left and right ends and the mud pushing and waving caused by the leveling plate generated at the time of planting work can be reduced. It is possible to more effectively suppress the occurrence of inconvenience such as disturbing the planting posture of the already planted seedlings or the falling of the already planted seedlings due to mud pushing or waving by the ground plate.

Further, similarly to the first aspect of the present invention, the number of floats can be reduced as compared with the case where six T-shaped leveling floats are arranged in parallel in the seedling planting apparatus. In addition, the number of members constituting the support structure can be reduced,
In addition, a wide, approximately Π-shaped side float that performs three-step leveling is arranged on the left and right sides of a T-shaped center float that performs two-step leveling, so that it is generally placed across four steps. Since the side float will be located behind the front wheel and the rear wheel that is arranged to straddle six rows,
The traces of these wheels can be reliably leveled, and the center floats at the left and right centers of the seedling planting device enable automatic elevation control to be performed with high precision, thereby simplifying the configuration and reducing manufacturing costs. At the same time, more appropriate leveling and planting can be performed.

[Effects] Therefore, a T-shaped center float for leveling two rows is provided at the center on the left and right sides of the seedling planting apparatus, and a wide, roughly flat area for leveling three rows on the left and right sides of the center float.
Each of the U-shaped side floats is further provided with a U-shaped side float that performs leveling for one line outside the side float, and one U-shaped side float is provided at an outer end of the U-shaped side float. By arranging a leveling board to level the ground, the rational float and the layout of the leveling board can simplify the configuration and reduce the manufacturing cost, and more effectively suppress the disturbance and lodging of the planting posture of the already planted seedlings. As a result, it has become possible to provide a twelve-row planting machine capable of more appropriate leveling and planting.

According to the third aspect of the present invention,
In a rice transplanter for multi-row planting, a T-shaped center float for leveling two rows is provided at the center on the left and right of the seedling planting device, and a wide square character for leveling three rows on the left and right sides of the center float. Each of the side floats has a U-shaped side float for leveling one line outside of the side float, so that ten lines can be planted.

[Operation] According to the third aspect of the present invention, since a U-shaped side float for performing one-step leveling is disposed at both left and right ends of the seedling planting apparatus.
Compared to the case where five T-shaped leveling floats that perform leveling for two rows on the seedling planting device are arranged in parallel in the left-right direction, so that planting for ten rows is possible,
Since the outer ends of the float groups arranged side by side are located on the more outward side and the contact surface of the outer ends is wider, the vertical movement of the seedling planting apparatus with the connection point with the traveling body as a fulcrum Movement (so-called rolling swing) can be more effectively suppressed. That is, the stability of the seedling planting apparatus against rolling swings is increased, so that appropriate planting can be stably performed. In the invention according to the third aspect, the U-shaped side float provided on each of the left and right ends of the seedling planting apparatus for leveling one line is a T-shaped leveled float for leveling two lines. Since the width of the float is narrower and the mud pushing and waving generated during planting work are small, the outer end of the float group is located more outward and closer to the already planted seedlings Also,
Since the mud pushing and waving of the already planted seedlings that occur during planting work can be suppressed, the planting posture of the already planted seedlings is disturbed or the already planted seedlings fall because the outer end of the float group is closer to the already planted seedlings. It can be avoided that such inconveniences are likely to occur.

[0016] In addition, a wide, approximately Π-shaped side float for leveling three sections is provided on the left and right sides of a T-shaped center float for leveling two sections. Since the side floats are located behind the front wheels that are arranged to straddle and the rear wheels that are arranged to straddle six staves, and those wheel traces are surely leveled, appropriate Planting can be performed.

Further, the center float is provided at the center of the right and left sides of the seedling planting apparatus, so that the first and second embodiments are provided.
Similarly to the described invention, a vertical float (so-called rolling rocking) component of the vertical rocking displacement of a seedling planting apparatus with a connection point with a traveling machine as a fulcrum is not substantially included in the vertical rocking displacement caused by traveling during planting work. Based on the vertical swing displacement of the, the automatic raising and lowering control that controls the raising and lowering of the seedling planting device so that the planting depth by the seedling planting device is maintained at the appropriate depth can be performed, so that more appropriate leveling and planting Can be performed.

[Effect] Accordingly, a T-shaped center float for leveling two rows is provided at the center of the right and left sides of the seedling planting apparatus, and a wide and substantially flat ground for leveling three rows on the left and right sides of the center float.
The U-shaped side floats, each of which has a U-shaped side float that performs one-step leveling on the outside of the side floats, further disturb the planting posture of the already planted seedlings. It has become possible to provide a rice transplanter for jujube planting that can suppress lodging and can stably perform more appropriate leveling and planting.

In the invention according to claim 4 of the present invention,
In a rice transplanter for multi-row planting, a T-shaped center float for leveling two rows is provided at the center on the left and right of the seedling planting device, and a wide square character for leveling three rows on the left and right sides of the center float. Each of the side floats is arranged, and a leveling plate for leveling one line is mounted on the outer end of the side float, so that ten lines can be planted.

According to the fourth aspect of the present invention, for example, five T-plants that perform two-row leveling in a seedling planting apparatus are provided.
The one where the character-like leveling float is arranged in parallel in the left and right direction,
Since the number of floats can be reduced and the number of members constituting the support structure can be reduced as compared with the above-mentioned invention, the structure can be simplified and the manufacturing cost can be reduced.

Further, for example, a T-shaped center float for leveling two rows at the center on the left and right of the seedling planting apparatus, and a wide, approximately Π-shaped side float for leveling three rows on the left and right sides of the center float. Are arranged, and a leveling plate for leveling one row is attached to the inner end of the side float, so that planting for 10 rows is possible. At the left and right ends of the planting device, approximately Π-shaped side floats, which increase the width and width of the mud due to its wide width, are located. Inconvenience such that the planting posture of the already planted seedlings is disturbed or the already planted seedlings fall down is apt to occur. At the left and right ends, a leveling board that is much narrower than the Π-shaped side float, and that is thin and thin and allows muddy water to pass through from above to perform leveling for one line will be located Therefore, compared with the case where the substantially U-shaped side floats are located on both left and right ends of the seedling planting device, it is possible to reduce the mud pushing and waving of the already planted seedlings generated at the time of planting work, It is possible to suppress the occurrence of inconveniences such as disturbing the planting posture of the already planted seedlings or falling down of the already planted seedlings due to mud pushing and waving generated during the planting operation.

Furthermore, a wide, approximately に -shaped side float for leveling three sections is provided on the left and right sides of a T-shaped center float for leveling two sections, so that four sections are generally arranged. Since the side floats are located behind the front wheels that are arranged to straddle and the rear wheels that are arranged to straddle six staves, and those wheel traces are surely leveled, appropriate Planting can be performed.

In addition, the center float is disposed at the center of the right and left sides of the seedling planting apparatus.
Similarly to the invention described in the third aspect, the vertical swinging displacement accompanying the traveling during the planting work hardly includes the vertical swinging (so-called rolling swing) component of the seedling planting apparatus with the connection point with the traveling machine as a fulcrum. Based on the vertical swing displacement of the float, automatic raising and lowering control that controls the raising and lowering of the seedling planting device so that the planting depth by the seedling planting device is maintained at an appropriate depth can be performed, so that more appropriate leveling and planting Can be performed.

[Effect] Accordingly, a T-shaped center float for leveling two rows is provided at the center on the left and right sides of the seedling planting apparatus, and a wide and substantially flat area for leveling three rows on the left and right sides of the center float.
By arranging the floats and leveling plates to arrange each of the character-shaped side floats, and mounting a leveling plate for leveling one line at the outer end of the side floats, the structure is simplified and the manufacturing is simplified. The present invention can provide a rice transplanter for jujube planting that can reduce costs, suppress disturbance and lodging of already planted seedlings, and can perform more appropriate leveling and planting.

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 shows an overall side view of a twelve-row rice transplanter which is an example of a multi-row rice transplanter. A ride-type traveling body 1 having a front wheel 1A disposed over four sections and a rear wheel 1B disposed over six sections, and hydraulic pressure at a rear portion of the traveling body 1 via a lifting link mechanism 2. It comprises a seedling planting apparatus 4 for twelve-row planting, which is connected to be able to move up and down by the operation of a lift cylinder 3 of the type.

[0027] As shown in Figs.
A fixed frame 5 connected to the rear end of the lifting link mechanism 2;
The right and left ends of the fixed frame 5 are respectively provided with a vertical axis P1.
A swing frame 6 swingably connected therearound, a feed case 7 swingably connected to a free end of each swing frame 6 around a vertical axis P2, and a left and right extending from each feed case 7. A square pipe-shaped support frame 8, three left and right planting transmission cases 9 extending rearward from each supporting frame 8 with a certain spacing in the left-right direction, and each planting transmission case 9. Rotary type planting mechanism 10 pivotally supported on the left and right sides of the rear part, and in the working posture, each planting mechanism 10
And six right and left seedling mounting tables 11 connected so as to be able to reciprocate and laterally move with a constant stroke, and a leveling float for performing a leveling operation in advance in a working position on a planting position by each planting mechanism 10. The group 12 and the like are configured into a two-part structure that can be separated into a left seedling planting device unit 4A and a right seedling planting device unit 4B, each having six rows, and the left and right seedling planting device units 4A and 4B are separated. Each vertical axis P
By swinging around P1 and P2, the working posture (see FIG. 2) in which the left seedling planting device unit 4A and the right seedling planting device unit 4B are connected in a state of being lined up in a horizontal line, respectively. The left seedling planting unit 4A and the right seedling planting unit 4B are configured to be switchable between the storage positions (see FIG. 3) in which the left and right planting devices 4B face each other. That is, by switching the seedling planting device 4 from the working posture to the storage posture, the amount of the seedling planting device 4 projecting in the lateral direction with respect to the traveling machine body 1 can be reduced. The possibility that the seedling planting device 4 comes into contact with other objects during transportation by truck or the like can be reduced.

As shown in FIG. 4 and FIG. 5, the leveling float group 12 is composed of a T-shaped center float 12A and a center float 12A which are disposed at the left and right center of the seedling planting apparatus 4 and perform leveling. Wide, roughly square-shaped side floats 12B for leveling three strips arranged on the left and right, and each roughly square
The T-shaped side floats 12C, which are disposed outside of the character-shaped side floats 12B and are arranged on the outer side of the T-shaped side floats 12C, are configured so that a total of five land-leveling floats can be used for leveling for twelve lines. ing. That is, as shown in FIG. 13, for example, as compared with a case where six T-shaped leveling floats 12Z for leveling two rows in the seedling planting apparatus 4 are arranged in parallel in the left-right direction, the number of floats is reduced. Since it is possible to reduce the number of members constituting the supporting structure, it is possible to simplify the configuration and reduce the manufacturing cost. In addition, by arranging wide, approximately Π-shaped side floats 12B for leveling for three rows on the left and right of the T-shaped center float 12A for leveling for two rows,
A substantially Π-shaped side float 12B is located behind the front wheel 1A that is arranged so as to straddle four planting streaks and the rear wheel 1B that is arranged so as to straddle six studs, so that the wheel marks can be reliably leveled. Therefore, appropriate planting can be performed without being affected by the wheel marks.

For example, as shown in FIG. 14, a T-shaped center float 12A for leveling two rows at the center of the right and left of the seedling planting apparatus 4, and a T-shaped center float for right and left of the center float 12A. When the side float 12C having a letter shape is further disposed, and the wide side float 12B having a substantially Π shape for leveling three strips is disposed outside the side float 12C of each T-shaped streak, it is close to the planted seedling. Seedling planting equipment 4
At the left and right side edges of the right side, a substantially Π-shaped side float 12B whose width is widened to cause mud pushing and waving is located. However, inconvenience such that the planting posture of the seedling is disturbed or the planted seedlings fall down is likely to occur. As shown in FIGS. 4 and 5, in the first embodiment, the seedling planting device 4 close to the planted seedlings is used. A substantially U-shaped side float 12 for leveling three lines on both left and right ends
Since the T-shaped side floats 12C for leveling two streaks having a width smaller than B are located, substantially Π-shaped side floats 12B are provided at both left and right ends of the seedling planting apparatus 4.
Compared with the case where is located, it is possible to reduce the thrust and ripples on the already planted seedlings that occur during planting work, In addition, it is possible to suppress the occurrence of inconveniences such as disturbed planting posture of the already planted seedlings or lodging of the already planted seedlings.

As shown in FIGS. 4 to 6, the left side approximately 12V-shaped side float 12B and the T-shaped side float 12C disposed on the left side of the center float 12A are connected to the left seedling planting unit 4A. Is supported by a free end of a support arm 14 extending rearward and downward from a float fulcrum pipe 13 provided on the horizontal axis so as to swing up and down around a horizontal axis P3. On the other hand, the center float 12A, and the right substantially １２-shaped side float 12B and the T-shaped side float 12C disposed on the left side of the center float 12A,
Floating fulcrum pipe 1 mounted on right seedling planting unit 4B
At the free end of a support arm 14 extending rearward and downward from 3, the support arm 14 is connected and supported so as to be vertically swingable about a horizontal axis P <b> 3.

As shown in FIG. 7, the traveling body 1 is equipped with a control device 15 composed of a microcomputer. On the other hand, as shown in FIG. 4, FIG. 6 and FIG. 7, the seedling planting device 4 includes an urging spring 16 for urging the free end (tip) of the center float 12A to the ground, and A float sensor S such as a rotary potentiometer for detecting vertical swing displacement about the horizontal axis P3 of the center float 12A and outputting the displacement to the control device 15 is provided. The urging spring 16 is supported by the seedling plant 4 via a plurality of linking links 17 and linking rods 18. The float sensor S is configured such that its main body Sa is a support mechanism 1
9 and connected to the float support pipe 13 on the right side,
Further, the detection unit Sb is linked to the center float 12A via the linking mechanism 20. The control device 15 controls the center float 12 detected by the float sensor S.
A based on the vertical swing displacement of A
The raising and lowering of the seedling planting device 4 is controlled so that the vertical swing angle of the seedling returning to the preset target angle allows the seedling planting device 4 to be maintained at a predetermined ground height regardless of the ups and downs of the field. It is configured to execute the raising / lowering control, so that the seedlings can be stably planted by the seedling planting apparatus 4 at a predetermined desired planting depth.

The center float 12A, whose vertical oscillating displacement is detected by the float sensor S, uses the vertical oscillating displacement to vertically oscillate (see FIG. 3) the seedling planting device 4 with the connection with the traveling machine 1 as a fulcrum. For example, as shown in FIG. 13, six T-shaped leveling floats 12 </ b> Z are arranged in parallel in the left-right direction on the seedling planting device 4 because the components do not substantially include a so-called rolling swing component. The automatic lifting and lowering control can be performed with higher precision than that in which the center float 12A is not present any more, so that more appropriate leveling and planting can be performed.

Incidentally, the setting of the target angle of the center float 12A is performed by the setting dial 2 provided on the traveling body 1.
1 can be performed by manual operation.

As shown in FIGS. 1, 2 and 8, the rear fender 22 provided at the rear of the traveling machine body 1 is formed so as to function as a step when replenishing seedlings to the seedling planting device 4. Auxiliary step 2 on the left and right outer edges
3 is detachably mounted. The attachment of the auxiliary step 23 to the rear fender 22
The engaging hook 23a provided in the auxiliary step 23 is engaged with the rear fender 22 from the engaging hole 22a formed in the vehicle, and the traveling machine body 1 and the auxiliary step 23 are connected with each connecting tool 24. It has become. That is, by attaching the auxiliary step 23 to the rear fender 22 during the planting operation as shown in FIG. 2, steps can be formed in a length corresponding to the wide seedling mounting table 11. The seedlings can be smoothly supplied to the outer end portion of the rice plant. or,
When traveling on a road or transporting by truck or the like, as shown in FIG. 3, the auxiliary step 23 is removed from the rear fender 22 to switch the seedling planting device 4 to the storage position.
Can be set to a length corresponding to the width of the auxiliary step 23 when traveling on a road or transporting by truck or the like.
Can avoid contact with other objects.
It should be noted that the auxiliary step 23 has an operation position in which the auxiliary step 23 extends outward from the lateral outer side of the rear fender 22 and a storage position in which the auxiliary step 23 does not extend outward from the lateral outer side of the rear fender 22 (for example, the auxiliary step 23 is placed on the upper surface of the rear fender 22). May be equipped so that the posture can be switched between the two positions.

[Second Embodiment] In the second embodiment,
Since only the configuration of the leveling float group 12 is different from that of the first embodiment, only the configuration of the leveling float group 12 will be described.

As shown in FIGS. 9 and 10, the leveling float group 12 is composed of a T-shaped center float 12A and a center float 12A which are disposed at the center of the right and left of the seedling planting apparatus 4 and perform leveling. Wide, approximately Π-shaped side floats 12B for leveling three strips arranged on the left and right, and U-shaped, for leveling one strip disposed outside each substantially Π-shaped side float 12B Side floats 12D, and a total of five leveling floats, and each U-shaped side float 1
A flat ground plate 12E, which is mounted on the outer end of the 2D and performs a leveling operation for one line, is configured to enable a twelve line leveling operation.

With this configuration, similar to the configuration of the first embodiment, compared with the case where six T-shaped leveling floats 12Z are arranged in parallel in the seedling planting device 4 (see FIG. 13). Thus, the configuration can be simplified and the manufacturing cost can be reduced, and more appropriate leveling and planting can be performed. In addition, a T-shaped side float 12 is provided at both left and right ends of the seedling planting device 4 for leveling two stalls disposed at the left and right sides of the seedling planting device 4 in the first embodiment.
A U-shaped side float 12D that performs leveling of one line narrower than C is disposed, and the outer width of the side float 12D is narrower than the U-shaped side float 12D, and A leveling plate 12 that is thin enough to allow muddy water to pass through from above to perform leveling for one line.
Since E is mounted, compared to the first embodiment in which T-shaped side floats 12C are disposed on both left and right ends of the seedling planting device 4, the planting seedlings generated at the time of planting work are removed. It is possible to reduce the mud pushing and waving of the seedlings, which causes inconvenience that the planting posture of the already planted seedlings is disturbed or the seedlings fall down due to the mud pushing and waving of the already planted seedlings generated during planting work. This can be suppressed more effectively.

[Third Embodiment] As shown in FIG. 11, a rice transplanter for multi-row planting in the third embodiment is for ten-row planting, and its configuration is substantially the same as that of the first embodiment. Since the configuration is the same, only the structure different from the first embodiment will be described.

That is, in the third embodiment, though not shown, six planting transmission cases mounted on the seedling planting device 4 in the same manner as in the first embodiment (see FIG. 4). 9, a rotary-type planting mechanism 10 is mounted only on the lateral outer side of the rear part of the planting transmission case 9 arranged at the left and right center of each of the right and left seedling planting units 4A and 4B. Each of the seedling planting units 4A and 4B is equipped with a five-row seedling mounting table 11, and as shown in FIG. A T-shaped center float 12A, a wide, approximately Π-shaped side float 12B disposed on the left and right of the center float 12A for leveling for three strips, and an outer side of each substantially Π-shaped side float 12B. A U-shaped side float 12D for leveling one line By constructing a leveling float group 12 from a total of five leveling floats, a seedling planting apparatus 4 capable of planting ten rows is formed, and the seedling planting apparatus 4 for ten rows is the same as in the first embodiment. By connecting to the rear of the traveling machine body 1 so as to be able to move up and down, a rice transplanter for ten-row planting is constituted.

By arranging U-shaped side floats 12D for leveling one streak on both left and right ends of the seedling planting apparatus 4, for example, as shown in FIG. As shown in FIG. 11, as compared with a case where five T-shaped leveling floats 12 </ b> Z for leveling two rows are arranged in parallel in the left-right direction so that planting for 10 rows is possible. Since the outer end of the leveling float group 12 is located on the outer side and the contact surface of the outer end is widened, the vertical movement of the seedling planting apparatus 4 with the connection point with the traveling machine body 1 as a fulcrum. The movement (so-called rolling rocking) can be suppressed more effectively, so that the stability of the seedling planting apparatus 4 against the rolling rocking can be increased, and appropriate planting can be stably performed. It has become. Also, in the third embodiment, a leveling of one row disposed on both left and right ends of the seedling planting apparatus 4 is performed.
The side float 12D having a character shape is narrower in width than a T-shape float 12Z having a T-shape that performs two-step leveling shown in FIG. Even if the outer end of the leveling float group 12 is located on the outer side and comes closer to the already planted seedlings, it is possible to suppress mud pushing and waving of the already planted seedlings generated at the time of planting work. Further, since the outer end portion of the leveling float group 12 is closer to the already planted seedling, it is possible to avoid the disadvantage that the planting posture of the already planted seedling is disturbed or the already planted seedling is easily laid down.

Also, a wide, approximately three-level leveler is provided on the left and right sides of the T-shaped center float 12A for leveling two levels.
By arranging the character-shaped side floats 12B, the substantially Π-shaped side floats 12B are located behind the front wheel 1A arranged so as to straddle the four rows and the rear wheel 1B arranged so as to straddle the six rows. Then, since the wheel traces are surely leveled, proper planting can be performed without being affected by the wheel traces.

[Fourth Embodiment] In the fourth embodiment,
Since only the configuration of the leveling float group 12 is different from the third embodiment, only the configuration of the leveling float group 12 will be described.

As shown in FIG. 12, the leveling float group 12
Is a T-shaped center float 12A arranged at the center of the right and left of the seedling planting device 4 for leveling two rows, and a wide and substantially flat ground for three rows arranged at the left and right sides of the center float 12A. A total of three leveling floats, each of which has a character-shaped side float 12B, and a flat leveling plate 12E which is mounted on the outer end of each side float 12B and performs leveling of one level, enables leveling of ten levels. It is configured to be. The mounting posture of the grading plate 12E is the same as the mounting posture of the grading plate 12E in the second embodiment.

With this configuration, for example, as shown in FIG. 15, five T-shaped leveling floats 12Z for leveling two stalls are arranged in parallel in the left and right direction in the seedling planting apparatus 4, and FIG. In comparison with the third embodiment shown in FIG.
Since the number of leveling floats can be reduced and the number of members constituting the support structure can be reduced, the configuration can be simplified and the manufacturing cost can be reduced.

For example, as shown in FIG. 16, a T-shaped center float 12A for leveling two rows at the center on the left and right sides of the seedling planting apparatus 4, and a leveling for three rows on the left and right sides of the center float 12A. Wide, approximately の -shaped side float 1
2B and the side float 12B
In the case where it is configured such that planting for ten rows is possible by mounting a ground leveling plate 12E for leveling one row at the inner end of the seedling, the right and left both ends of the seedling planting device 4 close to the already planted seedlings The side float 12B having a substantially rectangular shape, in which the width is large and the mud pushing and waving becomes large, is located, so that the mud pushing and waving of the already planted seedling at the time of planting work become large and the planted seedling is planted. Inconveniences such as the posture being disturbed or the already planted seedling falling down are likely to occur. However, in the fourth embodiment, as shown in FIG. The leveling plate 12E, which is much narrower in width than the Π-shaped side float 12B and has a small thickness and allows muddy water to pass through from above, so that a leveling plate 12E is positioned. Thus, compared to the case where the substantially Π-shaped side floats 12B are located on both left and right ends of the seedling planting apparatus 4 (see FIG. 16), the pushing of the seedlings and the ripples generated on the already planted seedlings at the time of planting work are reduced. Therefore, it is possible to suppress the occurrence of inconveniences such as disturbing the planting posture of the already planted seedlings or falling down of the already planted seedlings due to mud pushing and undulation generated during the planting operation.

Furthermore, a wide, approximately Π-shaped side float 12B for leveling for three lines is disposed on the left and right sides of a T-shaped center float 12A for leveling for two lines, thereby straddling four lines. A substantially Π-shaped side float 12B is located behind the front wheel 1A and the rear wheel 1B which is arranged so as to straddle the six tracks, so that the wheel traces are surely leveled. The planting can be performed properly without being affected by the harmful effects of the plant.

[Another Embodiment] The seedling planting device 4 may be configured so that the posture cannot be switched to the storage posture. The shape, the mounting structure, and the mounting posture of the leveling plate in the second embodiment and the fourth embodiment can be variously changed.

[Brief description of the drawings]

FIG. 1 is an overall side view of a rice transplanter according to a first embodiment.

FIG. 2 is an overall plan view of the rice transplanter showing a state in which the seedling planting device is switched to a working posture in the first embodiment.

FIG. 3 is an overall plan view of the rice transplanter showing a state in which the seedling planting device is switched to a storage position in the first embodiment.

FIG. 4 is a schematic plan view illustrating a configuration of a seedling planting device according to the first embodiment.

FIG. 5 is a schematic plan view showing a float arrangement in the first embodiment.

FIG. 6 is a longitudinal sectional side view showing a configuration of a lower part of the seedling planting device in the first embodiment.

FIG. 7 is a block diagram illustrating a control configuration according to the first embodiment.

FIG. 8 is a block diagram showing a configuration of an auxiliary step in the first embodiment.

FIG. 9 is a schematic plan view showing a float arrangement in a second embodiment.

FIG. 10 is a side view of a side float showing a mounting posture of a leveling plate in a second embodiment.

FIG. 11 is a schematic plan view showing a configuration and a float arrangement of a seedling planting apparatus according to a third embodiment.

FIG. 12 is a schematic plan view showing the configuration and float arrangement of a seedling planting apparatus according to a fourth embodiment.

FIG. 13 is a schematic plan view showing a comparative example for twelfth planting in which six T-shaped leveling floats are arranged in parallel on the left and right.

FIG. 14 is a schematic plan view showing a comparative example for twelfth planting in which Π-shaped leveling floats are arranged on both left and right ends of the seedling planting device.

FIG. 15 is a schematic plan view showing a comparative example for cross-shaped planting in which five T-shaped leveling floats are arranged in parallel on the left and right.

FIG. 16 is a schematic diagram showing a comparative example for cross-shaped planting in which a Π-shaped leveling float is provided on both left and right ends of the seedling planting apparatus and a leveling plate is attached to an inner end of the Π-shaped leveling float. Plan view

[Explanation of symbols]

 4 Seedling planting equipment 12A Center float 12B Substantially Π-shaped side float 12C T-shaped side float 12D U-shaped side float 12E Leveling plate

Claims (4)

[Claims] 1. A right and left center of a seedling planting apparatus has a T-shaped center float for leveling two lines, and a left and right side of the center float has a wide, approximately Π-shaped side float for leveling three rows. In addition, a T-shaped side float for leveling two rows is disposed outside the side float, so that twelve rows can be planted. Rice transplanter. 2. A T-shaped center float for leveling two rows at the center of the left and right sides of the seedling planting device, and a wide, approximately Π-shaped side float for leveling three rows at the left and right sides of the center float. Further, a U-shaped side float for performing one-step leveling is disposed outside the side float, and a one-step leveling is performed at an outer end portion of the U-shaped side float. A rice transplanter for multi-row planting that has a base plate attached and is configured to enable twelve-row planting. 3. A T-shaped center float for leveling two rows at the center of the left and right sides of the seedling planting device, and a wide, approximately Π-shaped side float for leveling three rows at the left and right sides of the center float. Further, a U-shaped side float for leveling one line is disposed outside the side float, and a rice planting for multi-row planting configured to enable planting for ten lines is provided. Machine. 4. A T-shaped center float for leveling two rows at the center of the left and right sides of the seedling planting apparatus, and a wide, substantially Π-shaped side float for leveling three rows at the left and right sides of the center float. , And a leveling plate for leveling one row is mounted on the outer end of the side float, so that ten rows can be planted.