JP3499310B2 - Rice transplanter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects a seedling planting device, which cuts out a seedling placed on a seedling platform with a planting mechanism and plants it in a field, to a rear end of a traveling machine body so as to be vertically movable. More specifically, the present invention relates to a technique for reducing the lateral dimension of a seedling planting device when not in operation.

[0002]

2. Description of the Related Art As a technique for reducing the lateral dimension of a seedling planting apparatus as described above, there is one disclosed in Japanese Utility Model Laid-Open No. 4-113523. By making it foldable, the lateral dimension of the seedling placing table can be reduced by folding the both ends of the seedling placing table when not in operation.

[0003]

Since the seedling planting device of the riding type rice transplanter has a large lateral dimension, it is used for avoiding contact with obstacles when traveling on the road or for loading the rice transplanter on a truck. A conventional rice transplanter has been considered so that the lateral dimension of a multi-row planting device such as 8-row planting may be reduced in order to fit it within the width of the bed when it is transported. However, since the configuration of this conventional example is a configuration in which only both sides of the seedling placing base are folded, for example, when storing a seedling planting device for multi-row planting of 10 rows or more, the lateral dimension should be reduced. There was room for improvement because it could not be made too small.

Therefore, the seedling planting device is configured to be freely split at an intermediate position in the left-right direction, and by changing the posture of each divided object, the seedling planting device is switched to a storage posture in which the lateral dimension is reduced. It is also conceivable to make it possible. However, in the conventional seedling planting device, the relative distance between the seedling placed on the seedling planting device and the planting arm of the planting mechanism is changed by moving the seedling placing table in a substantially vertical direction. A seedling removal amount adjusting mechanism of a structure or a planting depth adjusting mechanism of a structure that changes the relative distance between the leveling float and the planting arm of the planting mechanism by moving the leveling float in a substantially vertical direction Since the operation shafts for activating these mechanisms are provided over the entire width of the seedling planting device in the lateral direction, when these seedling planting devices are divided into two, these operation shafts can be comfortably operated. A split configuration is also required.

An object of the present invention is to prevent the operation shaft arranged across the entire width of the seedling planting device from being obstructed.
This is to reasonably construct a rice transplanter capable of reducing the lateral dimension by dividing the seedling planting device.

[0006]

According to the present invention of claim 1, a seedling planting device for cutting out seedlings from a seedling placing table by a planting mechanism and planting them in a field is connected to a rear end of a traveling machine body so as to be vertically movable. In a certain rice transplanter, the seedling planting device is configured to be split at an intermediate position in the left-right direction, and the lateral outer end of the split product is moved to the front side of the traveling machine body by changing the posture of each split product. Storing means for facing and moving the divided object toward the central position side in the left-right direction of the traveling machine body to enable switching to a storing attitude in which upper end edges of the respective divided seedling placing bases are parallel in a close state. And a manipulating tool for pivoting the manipulating shaft around an axis, and a manipulating member for manipulating the manipulating device in a lateral position with respect to the seedling planting device, and a position near the intermediate position of the manipulating device. A connecting member that is switchable between a dividing posture that allows division and a connecting posture that connects the operation tool Wherein the operation shaft, the pivot amount
Depending on the setting, move the seedling placing table up and down to place the seedling placing table.
Seedling amount adjustment to adjust the relative distance between the stand and the planting mechanism
It is used for the mechanism and the seedling stand is set at the lowest position.
Rotate the operation tool from the rotation operation position of the operation tool
In that it includes an operating mechanism for switching the dividing position the connecting member by operating in a direction perpendicular to the.

According to the present invention of claim 2, the seedlings on the seedling placing table are planted.
A seedling planting device that is cut out by the mechanism and planted in the field
A rice transplanter connected to the rear end of the rice plant so that it can move up and down,
Configure the seedling planting device so that it can be split at the middle position in the left-right direction.
Along with the change of the posture of each divided object,
The outer end of the
Move the split object to the center position side in the left-right direction of the traveling aircraft.
The top edges of the split seedling platforms are parallel to each other in close proximity.
Equipped with storage means that enables switching to a storage posture
In addition, the operation axis provided in a horizontal posture with respect to the seedling planting device,
An operation tool for rotating the operation shaft around an axis, and the operation tool.
Dividing posture that allows division near the intermediate position of the work axis
And a connecting portion that can be freely switched to a connecting attitude for connecting the operation tool
The operation shaft is provided with a
Move the leveling float provided for the seedling planting device up and down
Adjust the relative distance between the leveling float and the planting mechanism
It is used as a planting depth adjustment mechanism and also has a leveling float.
From the rotation operation position of the operation tool set to the lowest end position
By operating the tool in a direction orthogonal to the rotating operation direction,
It is equipped with an operating mechanism that switches the connecting member to a split posture.
It is in.

[0008]

According to the first aspect of the present invention, the seedling planting device is installed in the case.
When switching to the storage position, limit the rotation of the operating tool.
Rotation of the operation tool to set the seedling table to be set as the lowest position
From the operation position, move the operation tool in the direction orthogonal to the rotation operation direction.
It is possible to change the connecting member to a divided posture by operating it.
After this, the seedling planting device was split and the posture of each split item changed.
By doing the change, the divided operation axis becomes
The posture is changed integrally with the divided object without breaking the opposite posture.
As a result, the upper edges of the divided seedling stand are joined together.
It is possible to switch to the storage posture in which the
In this retracted position, the lateral dimension of the seedling planting device is reduced.
I can do it. In other words, the operation to set the seedling table to the lowest position.
The rotation operation position of the work tool (the limit position of the rotation operation of the operation tool)
The operation tool at right angles to the rotating operation direction for adjusting the seedling removal amount.
Operation in the middle of the operating range of the operating tool.
However, the operation axis is not separated.

According to the first aspect of the present invention, the operation tool is operated to adjust the seedling removal amount with the seedling table set at the lowermost position.
By operating in the direction orthogonal to the dynamic operation direction , the connecting member switches to the split posture, so that even when the seedling planting device is split, the rotary posture of each split operating shaft is maintained. Despite that the weight of the seedling stand acts, the rotation posture of the operation shaft on the side without the operation tool does not change. Further, in this configuration, since the relative rotational postures of the divided operation shafts do not change, the operation postures of the operation shafts are not adjusted even when the seedling planting device is restored from the storage posture to the working posture. It will be done.

According to the invention of claim 2, the seedling planting device
When switching the
Operation to set the leveling float, which is the boundary position, to the lowest position
The operation tool is orthogonal to the rotation operation direction from the rotation operation position of the tool.
The connecting member can be switched to the split posture by operating in the direction
After that, the seedling planting device was divided into separate pieces.
By changing the posture of the
Integral posture with the divided object without breaking its relative posture
It is possible to make changes, and as a result, on the split seedling stand.
It is possible to switch to a storage posture in which the edges are parallel to each other when they are close to each other
In this retracted position, the lateral dimension of the seedling planting device
Can be made smaller. In other words, place the leveling float at the lowest position
The rotation operation position of the operation tool to be set (the rotation operation of the operation tool is limited.
Rotation operation method for adjusting the depth of planting of the operation tool from the field position)
Since it is operated in the direction orthogonal to the direction,
The operation axis will not be separated even if an operation is mistaken between them.

According to a second aspect of the present invention , the planting depth of the operation tool is adjusted with the leveling float set at the lowermost position .
The connecting member is switched to the divided posture by operating in the direction orthogonal to the rotating operation direction. Therefore, even when the seedling planting device is divided, the rotating postures of the respective divided operation shafts are maintained. Therefore, the rotation posture of the operation shaft on the side not provided with the operation tool does not change, regardless of the weight of the ground leveling float. Further, in this configuration, since the relative rotational postures of the divided operation shafts do not change, the operation postures of the operation shafts are not adjusted even when the seedling planting device is restored from the storage posture to the working posture. It will be done.

[0012]

Therefore, the operation shaft arranged over the entire width of the seedling planting device in the lateral direction is not hindered, and a dedicated operation tool for separating the operation shaft is not provided. A rice transplanter was rationally constructed in which the seedling planting device can be divided in a state in which it is difficult to make an erroneous operation to reduce the lateral dimension (claims 1 and 2 ). Also, whether this operation shaft is for adjusting the seedling removal amount or for adjusting the planting depth,
A seedling planting device was reasonably configured to maintain the relative rotational postures of the respective operation shafts when the seedling planting device was divided and to easily perform the restoring operation from the retracted posture to the working posture (claim) 1,
2 )

[0013]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an engine 4 is mounted on the front part of a traveling machine body 3 provided with a steering type driven front wheel 1 and a driving type rear wheel 2, and the front part of the traveling machine body 3 is mounted. A continuously variable transmission 5 to which power from the engine 4 is transmitted, and a transmission case 6 are arranged, a driving seat 7 is arranged at the center of the traveling body 3, and a hydraulic pressure is applied to the rear end of the traveling body 3. The seedling planting device A is connected through a link mechanism 9 that is driven and moved up and down by a cylinder 8 to form a riding type rice transplanter.

An elevating lever 10 is provided on the right side of the driver's seat 7 to control the raising and lowering of the seedling planting device A and to turn the planting clutch C on and off. The continuously variable transmission 5 is operated on the left side of the driver's seat 7. A gear shift lever 11 is provided. Further, the planting clutch C is built in the gear shift case 6, and the cutting operation is allowed only when the transmission shaft 12 for transmitting power from the gear shift case 6 to the seedling planting device A is in a predetermined rotation phase. A planting arm (described later) of the planting apparatus A is configured to stop in a posture that avoids contact with the field.

The seedling planting apparatus A has a mat-shaped seedling W placed thereon, and the upper end of the seedling placing stand 13 is inclined to the front side of the traveling body 3, and the left and right to which power from the transmission shaft 12 is transmitted. A pair of transmission cases 14, 14, this transmission case 14
A rotary case 16 that is rotated by the power transmitted from the chain case 15 to the rotary case 16, a pair of planting arms 17 provided on the rotary case 16 one by one, and a plurality of ground leveling floats 18 for eight-row planting. , A mat-like seedling W that is equipped with a fertilizer applicator 19 having a hopper, a feeding mechanism, a grooving device, etc.
At the same time that the planting arm 17 cuts out the seedlings from the lower end of each plant and plant them in the field scene, the fertilizer application device 19 supplies the fertilizer to the field scene near the planted seedling. The rotary case 1
6, a planting arm 17, and a system for driving these, constitute a planting mechanism.

As shown in FIG. 9, FIG. 10 and FIG. 12, in this rice transplanter, the rice seedling planting apparatus A is placed at a center position of 4 in the left-right direction.
It is configured so that it can be divided into two parts, and each divided product A
L and AR are supported rotatably around the first axial center X1 in the vertical posture with respect to the frame member 20 constituting the divided products AL and AR, and further provided at the rear end of the link mechanism 9. With respect to the main frame 21, the frame member 20 is supported rotatably around the second axis X2 in the vertical posture,
Further, as shown in FIG. 13, in the state where the seedling planting apparatus A is set in the working posture, the first axis X is set on the basis of the vertical direction.
The upper ends of the first and second axial cores X2 are inclined toward the front side of the traveling machine body 3.

A linking plate 23 is supported by a rolling boss 22 connected to the lower end of the vertical frame 9A at the rear end of the link mechanism 9 so as to be freely rollable around a rolling axis Y in a front-back direction, and is connected to the linking plate 23. On the other hand, the main frame 21 composed of the upper plate 21A and the lower pipe 21B is fixedly installed, and the second shaft 24 is arranged coaxially with the second shaft X2 at both left and right ends of the main frame 21. A boss member 20 rotatably fitted on the second shaft 24.
The round pipe-shaped frame member 20 is fixed to A.

Further, the frame member 20 is rotatably supported around the second axis X2, and the frame members 20 and 20 are respectively supported.
A square pipe-shaped support frame 27 is rotated around the first axis X1 via a channel-shaped bracket 26 with respect to a first shaft 25 arranged coaxially with the first axis X1 at the outer end of the The left and right transmission cases 14 and the chain case 15 are fixedly mounted on the support frame 27, and further, with respect to the upper surfaces of the pair of chain cases 15 and 15 of the divided products AL and AR, respectively. Left and right sliding rails 28, 28 for supporting the seedling placing table 13 are provided.

A screw shaft 29, which is rotationally driven by the power of the left transmission case 14, is provided between the transmission case 14 and a bearing member 30 at the end of the support frame 27 on this side. The lateral feed mechanism of the seedling placing table 13 is configured by including the moving member 31 that transmits the moving force of the top (not shown) that is engaged in the spiral groove of the screw shaft 29 to the left divided seedling placing table 13L. In addition, the seedling placing table 13 is a left and right divided seedling placing table 13
L and 13R are connecting members D (see FIGS. 14 and 15)
By being connected by means of, the power from the lateral feed mechanism causes the sliding rails 28, 28 to integrally reciprocate laterally in the lateral direction.

A shaft (not shown) to which the power from the transmission shaft 12 is transmitted is rotatably supported on the rolling boss 22 coaxially with the rolling shaft core Y. Is formed to the left and right transmission cases 14 and 14 through the bevel case 32, the pair of output shafts 33 and 33 provided in the bevel case 32, the clutch mechanism 34, and the intermediate shaft 35, respectively. The clutch mechanism 34 has a clutch shaft portion 34A formed in a spline shape on the intermediate shaft 35 side.
And a shift member 34B slidably fitted onto the output shaft 33 so as to be fitted onto the clutch shaft portion 34A by the sliding movement thereof, and the shift member 34B is urged toward the clutch shaft portion 34A. With the spring 34C, the output shaft 33 of the bevel case 32 and the intermediate shaft 35 are configured to be engaged with each other only at a specific rotational phase at the time of the entering operation and completely separated at the time of the cutting operation. Bevel case 3
Reference numeral 2 internally mounts a transmission system having a bevel gear (not shown) for branching and outputting to two output shafts 33, 33 from the traveling body side, and an intermediate shaft 35 is provided with a universal joint.

As shown in FIGS. 11 (a), 11 (b) and 12, the second shaft 24 is non-rotatably provided with respect to the main frame 21, and the first shaft 25 is non-rotatably provided with respect to the frame member 20. is there. The main sprocket 36 is fixed to the upper portion of the second shaft 24 coaxially with the second shaft core X2, and
A plate-shaped rotating member 37 is provided at the upper end position of the plate so as to be rotatable around the second axis X2. Further, the bracket 26 is rotatably supported with respect to the first shaft 25, and is rotated integrally with the bracket 26, and a driven sprocket 38 having half the number of teeth of the main sprocket 36 is provided. The chain 39 is arranged coaxially with the first axis X1, and a chain 39 is wound around the main sprocket 36 and the driven sprocket 38.

The left and right rotating members 37, 37 are arranged at a higher level than the left and right frame members 20, 20, and
The frame members 20 and 20 are connected and fixed via the rods 40 and 40 in a suspended posture so as to rotate in association with the rotational force of the frame members 20, and the left and right rotating members 37 and 37 are rotated in opposite directions. , A pair of wires 4 in a crossed position between each
4,44 are stretched. Further, a sector gear 41 arranged coaxially with the left second axial center X2 is fixedly provided on the frame member 20 side, and a pinion gear 42 that meshes with the sector gear 41 is provided on the main frame 21 side. The electric motor 43 which drives is provided.

A turnbuckle 40A is interposed in the middle of the rod 40, and one end of the rod 40 has a rotating member 37.
Is fixed by welding to the frame member 20, and the other end of the rod member 40 is screwed to the frame member 20 through a supporting member 45 fixed to the frame member 20. By tying it in an inclined posture between the two, the strength is improved by suspending the frame member 20 with respect to the rotating member 37. In addition, a length adjusting portion 44A for adjusting the length in a screw type is provided at an intermediate portion of the wire 44.

As shown in FIG. 8, the sliding rail 28 is
The vertical axis member 46 connected to the sliding rail 28 is slidably supported by the chain case 15 so that the position can be changed in the direction along the placement surface of the seedling placement table 13. The swinging end of an arm member 48 formed on a seedling-picking-amount adjusting shaft 47 (an example of the operating shaft M) rotatably and swingably supported on the upper surface side of the sliding rail 28 is attached to the lower surface of the slide rail 28. The sliding rails are engaged with the mating member 49, and the seedling taking amount adjusting lever 50 (an example of the operating tool N) connected to the seedling taking amount adjusting shaft 47 is locked and fixed to the locking portion of the lever guide 51, so that the sliding rail is provided. 28, that is, the mat-shaped seedling W placed on the seedling placing table 13 and the relative position of the planting arm 17, that is, the operation locus T of the planting claw of the planting arm 17, is changed. It is structured so that the amount can be adjusted.

The front part of the ground float 18 is supported on the lower surface of the support frame 17 via a bending / extending link 52, and is provided on the lower surface of the chain case 15 so as to be rotatable around an axis in a horizontal posture. The rear portion of the leveling float 18 is swingably connected to and supported by the swing end of the arm 54 connected to the planting depth adjusting shaft 53 (an example of the operating shaft M), and is connected to the planting depth adjusting shaft 53. By locking and fixing the planting depth adjusting lever 55 (an example of the operation tool N) at the locking position of the lever guide 56, the ground leveling float 18, that is, the field scene S, and the planting arm 17, that is, planting. It is configured so that the relative implantation position of the arm 17 with respect to the operation locus T of the planting claw can be changed to adjust the planting depth.

Further, the seedling removal amount adjusting shaft 47 and the planting depth adjusting shaft 53 are respectively provided at the divided parts of the seedling planting device A so as not to prevent the seedling planting device A from being divided and switching to the storage posture. It is configured to be detachably connected. That is, as shown in FIGS. 2 to 4, the seedling removal amount adjusting shaft 47 includes a channel-shaped fitting member 57 at an end of one of the two split shafts 47L and 47R on the split position side, The other end of the split shaft 47L on the split position side is provided with a connecting member 58 that is switchable between a posture in which the split shaft 47L is engaged and coupled with the fitting member 57 and a split posture in which splitting is allowed and splitting is performed. The base end of the amount adjusting lever 50 is fixed to a boss member 61 rotatably supported around a shaft body 60 via a bracket 59 on the side of the split shaft 47L at the split position side. The connecting member 58 is fixed to the end of the shaft member 62 (an example of an operating mechanism) that is fixed in a posture of extending in the extending direction.

As shown in FIG. 5, the lever guide 51
Is a main guide path G1 which enables the seedling removal amount adjusting lever 50 to rotate around the axis of the seedling removing amount adjusting shaft 47,
When the seedling picking amount adjusting lever 50 is set to the maximum picking position, that is, when the slide rail 28 is set to the lowermost position, the separating path G2 that enables the operation in the direction orthogonal to the main guide path G1. Is formed into a hook shape, and the base end portion of the seedling picking amount adjusting lever 50 is urged in a direction to engage the engaging piece 50A formed on the lever 50 with the engaging concave portion of the main guide path G1. The spring 63 is provided.

As shown in FIG. 2 to FIG. 7, the split structure of the planting depth adjusting shaft 53 is also constructed in the same manner as the seedling taking amount adjusting shaft 47, and the planting depth adjusting shaft 53 has two split shafts. 53
A channel-shaped fitting member 57 is provided at an end portion of one of the split shafts 53L of the L and 53R on the split position side, and the other split shaft 53 is provided.
A connecting member 58 is provided at an end portion of R on the side of the dividing position, the connecting member 58 being switchable between a posture in which the engaging member 57 is engaged and coupled and a posture in which the member is separated and allows the division. 55
The base end portion of the bracket 59
Boss member 6 rotatably supported around the shaft body 60 via
1 is fixed to the boss member 61 and the split shaft 53R
The connecting member 58 is fixed to the end of the shaft member 62 (an example of an operating mechanism) that is fixed in a posture of extending in the extending direction.

As shown in FIG. 6, the lever guide 56
Is a main guide path G1 that allows the planting depth adjusting lever 55 to rotate about the axis of the planting depth adjusting shaft 53;
Separation that enables operation in a direction orthogonal to the main guide path G1 when the planting depth adjusting lever 55 is set to the position of the minimum planting depth, that is, with the ground leveling float 18 set to the lowermost position. It is formed in a hook shape with the path G2, and in the base end portion of the planting depth adjusting lever 55, a direction in which the engagement piece 55A formed on the lever 55 is engaged with the engagement recess of the main guide path G1. It has a spring 63 for urging.

In this way, the storing means is constituted by the structure in which the seedling planting apparatus A is switched to the storing posture by the rotation of the divided pieces about the axis in the vertical posture. When the device A is stored, as shown in FIG. 14, first, with the seedling planting device A raised to an appropriate level away from the ground, the seedling placing table 13 is moved to the left side by the driving force of the lateral feed mechanism. It is sent to the end position and stopped, then, the connection of the connecting member D is released, and the right divided seedling placing table 13R is artificially moved to the moving end on the right side to slide rails of the divided seedling placing table 13R. The movement on 28 is blocked by a locking means (not shown) (in this state, the posture shown in FIG. 15 is reached, and the distance between the left and right divided seedling placing bases 13R, 13L reaches about 30 cm).

Next, the transmission system is separated at the clutch mechanism 34, and the seedling picking amount adjusting lever 50 and the planting depth adjusting lever 55 are separated in the main guide path G1.
By setting the end portion on the second side and further operating the end portion of the separation path G2, as shown in FIG. When the leveling float 18 is located at the lowermost end, the planting depth adjusting shaft 53 is separated as shown in FIG. 7B, and the electric motor 43 is driven in this state. , The left and right rotating members 37, 37, the frame members 20, 20 are interlocked by the force from the pair of wires 44, 44, and the outer ends of the frame members 20, 20 are directed rearward around the second axis X2, X2. The first axis X1,
The system supported by the brackets 26, 26 around X1 is the main sprocket 36, the driven sprocket 38, and the chain 39.
Is applied to the frame members 20, 20 at a speed twice as fast as that of the frame members 20, 20 in a direction opposite to the rotation direction of the frame members 20, 20, that is, the left and right outer ends of the frame members 20, 20 are rotated toward the front side of the traveling body 3. Move.

When turning to this storage posture, as shown in FIG. 16, although the corner portions 13E, 13E at the upper inner ends of the left and right split seedling placement stands 13L, 13R are close to each other, the split seedling placement stand in plan view. Since the 13L and 13R rotate at positions separated from each other, the rotation is possible while avoiding the contact of the respective corner portions 13E and 13E.

Next, when the divided objects AL and AR reach the storage attitude, the driving of the electric motor 43 is stopped (the control operation is not described in detail) and the storage is completed. In this state, as shown in FIG. 17, the left and right split seedling placing bases 13L and 13R are in positions close to the traveling machine body 3 side on the slide rails 28 and 28, and their upper end edges are parallel to each other in a close state. Therefore, the weight of the whole seedling planting apparatus A is moved to the side of the traveling machine body 3 to improve the weight balance of the whole rice planting machine, and the seedling planting apparatus A
Will reduce the lateral dimension of.

Further, in this retracted posture, as described above, the divided seedling placing bases 13L and 13R are switched to the standing posture as shown in FIG. 18 by the rotation around the first axis X1 in the inclined posture. By further reducing the lateral dimension of the seedling planting device A and rotating the frame member 20 around the second axis X2 in the inclined posture as described above, as shown in FIG. As a result of displacing the rear side of the traveling body 3 of the above upward, the center of gravity of the entire rice transplanter is moved further forward to improve the weight balance, and at the same time, the rear end of the seedling planting device A in the retracted posture during traveling is set on the ground. It should not come into contact.

Then, when the seedling planting device A in this stored posture is restored to the working posture, the electric motor 43 is rotated in the reverse direction by a predetermined operation to rotate the split objects AL and AR in the opposite direction to the above. As a result, the seedling planting apparatus A in the stored posture is changed to the work posture by the operation opposite to the above, and when this posture change causes the seedling planting apparatus A to reach the posture shown in FIG. The drive is stopped (control operation is not described in detail), and further, the seedling picking amount adjusting lever 50 is moved to the main guide path G.
1 side, the planting depth adjusting lever 55 is operated to the main guide path G1 side, and the clutch mechanism 34 is turned on and operated.
13R of split seedling stand on the right side, 13L of split seedling stand on the left side
By approaching the side of and connecting 13L and 13R with the connecting member D, respectively, a workable state is reached.

As described above, when the seedling removal amount adjusting shaft 47 is divided and the planting depth adjusting shaft 53 is divided, each lever 5 is divided.
It is only necessary to operate 0, 55 in the direction orthogonal to the rotation direction. In this divided state, the divided seedling placing bases 13L, 13R have the sliding rails 28 at the lower end position due to the weight, and the seedling removal amount adjusting shafts 47, respectively. The split shafts 47L and 47R are in the same rotational posture, and in this split state, the split shafts 53 of the planting depth adjusting shaft 53 depend on the weight of the leveling float 18.
L and 53R are in the same rotational posture. From this, when the seedling planting device A is restored, the levers 50 and 5
The connecting member 58 is fitted into the fitting member 57 only by operating 5 in the opposite direction, and the connection of the seedling-picking amount adjusting shaft 47 and the planting depth adjusting shaft 53 is completed.

[Other Embodiments] In addition to the above-described embodiments, the present invention may connect the operation shaft by, for example, projecting the connecting member in the axial direction of the operation shaft, and separate the operation shaft by moving in the opposite direction. In addition to the configuration, it is possible to configure the operation mechanism with a wire so as to operate the connecting member in the separation direction by operating the operation tool in the non-operation direction.

Further, the present invention can be applied to a device for artificially performing the operation of switching the seedling planting device to the retracted posture, and can also be applied to a seedling planting device of 10 rows or more. Is.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Overall side view of rice transplanter

[Fig. 2] A plan view showing a seedling removal amount adjusting system and a planting depth adjusting system.

FIG. 3 (a) is a front view of the portion of the seedling removal amount adjusting lever when the connecting member is in the connected state, and (b) is a front view of the portion of the seedling collecting amount adjustment lever when the connecting member is in the separated state

FIG. 4 is a plan view of a portion near the seedling removal amount adjusting lever.

FIG. 5 is a plan view of a lever guide for adjusting the seedling removal amount.

FIG. 6 is a plan view of a lever guide for adjusting a planting depth.

FIG. 7 (a) is a front view of the portion of the planting depth adjusting lever when the connecting member is in the connected state, and (b) is a front view of the portion of the planting depth adjusting lever when the connecting member is in the separated state.

FIG. 8 is a side view showing a seedling removal amount adjusting system and a planting depth adjusting system.

FIG. 9 is a plan view of the transmission system of the seedling planting device in the working posture.

FIG. 10 is a plan view of the transmission system of the seedling planting device in the retracted posture.

FIG. 11A is a plan view of a storage means for a work posture. (B) is a plan view of the storage means in the storage posture

FIG. 12 is a rear view of the main frame and the frame member with partial cutaways.

FIG. 13 is a side view showing the postures of the first axis and the second axis.

FIG. 14 is a plan view of the rice transplanter with the seedling stand placed at the end of the sliding rail.

FIG. 15 is a plan view of the rice transplanter with the seedling placing table divided.

FIG. 16 is a plan view of a rice transplanter in which the seedling planting device is divided and rotated.

FIG. 17 is a plan view of the rice transplanter with the seedling planting device set in the retracted posture.

FIG. 18 is a rear view of the seedling planting device in a stored state

FIG. 19 is a side view of the seedling planting device in a stored state.

[Explanation of symbols]

3 traveling aircraft 13 seedling stand 13L, 13R split seedling stand 18 Leveling float 58 Connection member A seedling planting equipment AL, AR division M operation axis N operation tool W seedling

Claims (2)

(57) [Claims] 1. A seedling (W) placed on a seedling stand (13)
A seedling planting device (A), which is cut out by a planting mechanism and is operated to plant in a field, is vertically connected to the rear end of the traveling machine body (3). A) is configured to be freely divided at an intermediate position in the left-right direction, and the lateral outer ends of the divided products (AL) and (AR) are changed by changing the postures of the divided products (AL) and (AR). (3) is directed to the front side, and the splits (AL) and (AR) are moved to the central position side of the traveling machine body (3) in the left-right direction, and the respective split seedling placing bases (1)
3L) and (13R) are provided with a storage means that enables switching to a storage posture in which the upper edges of the 3L) and (13R) are parallel to each other in a close state,
An operation shaft (M) provided in a lateral posture with respect to the seedling planting device (A), an operation tool (N) for rotating the operation shaft (M) around an axis, and the operation shaft (M). ) Is provided with a connecting member (58) that is switchable between a dividing posture that permits division at a position near the intermediate position and a connecting posture that connects the operating tool (N), and the operating shaft (M) is Depending on the setting of the momentum, the seedling
The seedling stand (13) is moved by moving the stand (13) up and down.
Seedling amount adjusting machine for adjusting the relative distance between the plant and the planting mechanism
It is used for construction, and the seedling stand (13) is at the lowermost position.
From the turning operation position of the operation tool (N) set to
A rice transplanter equipped with an operation mechanism for switching the connecting member (58) to a divided posture by operating (N) in a direction orthogonal to the rotating operation direction . 2. A seedling (W) placed on a seedling stand (13).
Seedling planting operation that cuts out the plant with a planting mechanism and plant it in the field
Attaching the attached device (A) to the rear end of the traveling machine body (3) so that it can be moved up and down
It is a rice transplanter, and the seedling planting device (A) can be freely split at an intermediate position in the left-right direction.
Of each of the divided products (AL) and (AR)
By changing the posture, the divided objects (AL) and (AR)
Direct the outer end toward the front of the vehicle (3), and
Left and right of the traveling vehicle (3) with the divided objects (AL) and (AR)
Is moved to the center position side each split seedling stand in the direction (1
3L) and (13R) top edges are parallel to each other in a close state
A storage means is provided to enable switching to a storage posture, and
Operation axis for sideways orientation with respect to seedling planting device (A)
(M) Operation for rotating the operation shaft (M) around the axis
The tool (N) and the operating shaft (M) near the intermediate position.
Connect the operation posture (N) with the division posture that allows division at the side position
Equipped with a connecting member (58) that can be switched to the connecting posture
The operation shaft (M) is set to the seedling according to the setting of the rotation amount.
Up and down the leveling float (18) equipped with the planting device (A)
By moving the leveling float (18) and the planting mechanism
It is commonly used in the planting depth adjustment mechanism to adjust the relative distance.
Operation to set the leveling float (18) to the lowest position
Rotating operation of the operation tool (N) from the rotation operation position of the tool (N)
By operating in the direction orthogonal to the direction, the connecting member (5
Rice transplanter equipped with an operation mechanism that switches 8) to a split posture .