CN115697039A

CN115697039A - Paddy field working machine

Info

Publication number: CN115697039A
Application number: CN202180040474.7A
Authority: CN
Inventors: 儿岛祥之
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2020-07-14
Filing date: 2021-06-03
Publication date: 2023-02-03
Also published as: WO2022014187A1; JP7442406B2; JP2022017756A

Abstract

The invention provides a paddy field working machine capable of maintaining the state of being attached to a seedling transplanting device and dividing a rotor for soil preparation. Seedling transplanting units (6L, 6R) formed by a combination of a plurality of seedling placing parts, a plurality of seedling transplanting mechanisms and a transplanting frame are arranged in a manner of being divided into a right side and a left side in the left-right direction, the seedling transplanting units (6R, 6L) are connected to a lifting link mechanism (11), and the soil preparation rotor (50) is provided with: a central rotating body portion (50C) located at the center in the left-right direction; and end rotator portions (50R, 50L) arranged on the left and right sides in the direction along the rotation axis of the central rotator portion (50C), wherein the rotor for land preparation is configured such that the left and right end rotator portions (50R, 50L) can be divided with respect to the central rotator portion (50C), the central rotator portion (50C) is supported by the lifting link mechanism (11), and the left and right end rotator portions (50R, 50L) are supported by the left and right corresponding seedling planting units (6R, 6L).

Description

Paddy field working machine

Technical Field

The present invention relates to a paddy field working machine having a soil preparation device in front of a seedling planting device, wherein the soil preparation device includes a soil preparation rotor rotationally driven around a rotational axis extending in a lateral direction.

Background

As a paddy field working machine in which a soil preparation device having a soil preparation rotor is disposed in front of a seedling planting device, there has been known a paddy field working machine disposed as follows.

The paddy field operation mechanism comprises: a soil preparation device is disposed in the front of the seedling planting device, and rotational power is input from a drive system of the seedling planting device to one end of a drive shaft of a soil preparation rotor, and soil preparation is performed on a farmland before seedling planting work by the seedling planting device by the driving rotation of the soil preparation rotor (see patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2017-35034

Disclosure of Invention

Problems to be solved by the invention

The paddy field working machine described in patent document 1 is useful in that a soil preparation rotor can be arranged at the front of a seedling planting device to prepare soil for a farmland before seedling planting.

However, in such a structure, when a device having a large number of rows of planting rows is used as the seedling planting device and a structure capable of dividing or folding the seedling planting device for storage and transportation is used, the soil preparation rotor cannot be divided or folded, and a work such as detachment is required, which leaves room for improvement.

The invention provides a paddy field working machine which can maintain the state that a rotor for land preparation is arranged on a seedling transplanting device for dividing the rotor for land preparation.

Means for solving the problems

The paddy field working machine of the present invention is characterized in that:

the seedling transplanting device is connected and supported behind the traveling machine body through a lifting connecting rod mechanism; and

a soil preparation rotor rotationally driven around a rotation axis in a left-right lateral direction in front of the seedling planting device,

the seedling transplanting device is provided with a seedling transplanting unit in a mode of being divided into a right side and a left side in the left-right direction, the seedling transplanting unit is composed of a plurality of seedling carrying parts, a plurality of seedling transplanting mechanisms and a transplanting frame, the seedling carrying parts are arranged in a transverse row along the left-right direction, the seedling transplanting mechanisms are arranged in a mode corresponding to the seedling carrying parts, and the transplanting frame supports the seedling carrying parts and the seedling transplanting mechanisms,

the seedling transplanting unit is connected with the lifting connecting rod mechanism,

the land preparation rotor is provided with: a central rotating body portion located at a central portion in the left-right direction; and end rotating body portions disposed on both left and right sides in a direction along a rotational axis of the central rotating body portion, the land preparation rotor being configured such that the left and right end rotating body portions can be divided with respect to the central rotating body portion,

the central rotating body part is supported by the lifting link mechanism, and the end rotating body parts on the left and right sides are supported by the seedling transplanting units corresponding to the left and right sides.

According to the present invention, the soil preparation rotor is configured such that the left and right end rotating body portions can be divided with respect to the center rotating body portion. The central rotating body is supported by the lifting link mechanism, and the left and right end rotating body portions are supported by the left and right corresponding seedling planting units.

Therefore, even if the left and right end rotator portions are divided from the central rotator portion, the central rotator portion and the left and right end rotator portions are supported by the lifting link mechanism and the left and right corresponding seedling planting units, respectively, and can be divided while maintaining the state of being attached to the seedling planting device.

Thus, in the paddy field working machine, the rotor for land preparation is divided while maintaining the state of being supported by the seedling planting device without disassembling and assembling the rotor for land preparation, and the rotor for land preparation can be conveniently stored and transported.

In the present invention, it is preferable that the seedling planting unit is coupled to the lifting link mechanism via a folding mechanism,

the folding mechanism is provided with: a center frame supported by the lifting link mechanism; a right end frame connected to a right end of the center frame so as to be rotatable about an upper and lower axis; and a left end frame connected to a left end of the center frame so as to be rotatable about vertical axes,

the seedling planting unit on the right side and the seedling planting unit on the left side are supported by the end opposite to the side connected with the central frame in the right end frame and the left end frame in a manner of relatively swinging around the vertical axes parallel to the vertical axes on the left side and the right side of the central frame.

According to this configuration, the rice seedling planting device is provided with the folding mechanism and is configured to be foldable, and the soil preparation rotor can be folded while maintaining the state in which the soil preparation rotor is supported by the rice seedling planting device.

That is, in the case where the seedling planting device is a folding type device, the seedling planting unit sections on the left and right ends, which are three sections of the center frame and the seedling planting units on the left and right sides, are foldable with respect to the center frame section supported by the lifting link mechanism.

As a result, the rice seedling transplanting device is folded while maintaining the state in which the soil preparation rotor is supported by the rice seedling transplanting device.

Thus, in the foldable paddy field working machine, the rotor for soil preparation can be changed to the folded posture without disassembling and assembling the rotor for soil preparation, and the workability can be improved during storage and transportation while maintaining the state in which the rotor for soil preparation is supported by the seedling planting device.

In the present invention, it is preferable to provide: a central drive shaft supporting the central rotating body portion; and end rotary shafts supporting the left and right end rotary body portions, the end rotary shafts being coupled to the central drive shaft via an engageable and disengageable clutch mechanism so as to be able to release the inter-shaft coupling with respect to the central drive shaft,

the central driving shaft is supported in a liftable manner by the central frame via a suspension link mechanism, the end rotating shafts on the left and right sides are supported in a liftable manner by the seedling planting units on the left and right sides via other suspension link mechanisms,

a driver that inputs power from the traveling machine body to the center drive shaft and that causes a suspension link mechanism of the center drive shaft to perform a lifting operation is attached to the center frame.

According to this configuration, the central drive shaft of the central rotating body portion is supported by the central frame via the suspension link mechanism, and the end rotating shafts of the left and right end rotating body portions are supported by the left and right seedling planting units via the other suspension link mechanisms. The end rotary shafts and the central drive shaft are coupled to each other via a clutch mechanism that can be engaged and disengaged so as to release the coupling between the shafts, and an actuator that moves a suspension link mechanism of the central drive shaft up and down is attached to the central frame.

Therefore, when the coupling between the end rotary shafts and the central drive shaft is released by the clutch mechanism, the end rotary shafts and the end rotary body portions are not transmitted with the rotary power or the lifting power of the actuator, but are suspended from the seedling planting unit portions on both the left and right ends via the other suspension link mechanisms.

Thus, in the foldable paddy field working machine, the height of the central driving shaft can be appropriately adjusted by the driver without disassembling and assembling the soil preparation rotor, and the like, so that the soil preparation rotor can be easily changed to the folding posture while maintaining the state of being suspended and supported by the seedling planting device, and the workability can be further improved during storage and transportation.

In the present invention, it is preferable that the end rotator portion is configured to: the end rotating body portion is movable to a position lower than the center rotating body portion in a state where the coupling between the shafts by the clutch mechanism is released.

According to this configuration, since the end rotator portion is configured to be movable to a position lower than the center rotator portion, the end rotator portion can be compactly folded so as to be inserted under the center rotator portion.

In the present invention, it is preferable that the seedling planting unit includes a floating plate for soil preparation, and the end rotating body portion is configured to: the end rotating body portion is movable to a position below the land preparation floating plate in a state where the coupling between the shafts by the clutch mechanism is released.

According to this configuration, since the end rotating body portion is configured to be movable to a position below the floating plate for leveling, it is not necessary to move the end rotating body portion in the front-rear direction in order to avoid interference between the end rotating body portion and the floating plate for leveling in the horizontal direction, and the end rotating body portion can be folded compactly.

In the present invention, it is preferable that the center rotor portion is configured to: the center rotor portion is movable to a position above the end rotor portions in a state where the coupling between the shafts by the clutch mechanism is released.

According to this configuration, since the center rotor portion is configured to be movable to a position above the end rotor portions, the center rotor portion can be lifted up by a driver that lifts and lowers the suspension link mechanism of the center rotor portion with a light operation, and can be compactly folded so that the center rotor portion climbs upward of the end rotor portions.

In the present invention, it is preferable that the clutch mechanism is configured to be capable of changing on/off in accordance with a change in posture of the end rotator portion with respect to the center rotator portion, and the clutch mechanism is configured to: the clutch mechanism is in a clutch-on state in a posture in which the rotation axis of the end rotator portion is along the rotation axis of the central rotator portion, and the clutch mechanism is in a clutch-off state as the rotation axis of the end rotator portion is changed in a direction away from the rotation axis of the central rotator portion.

With this configuration, the clutch mechanism can be turned on and off according to the posture of the end rotator portion relative to the center rotator portion, and the folding operation can be performed more easily.

In the present invention, it is preferable that the seedling planting device is a ten-row planting seedling planting device provided with the seedling placing part for ten rows.

According to this structure, the folding operation of the soil preparation rotor can be easily performed along with the folding of the large seedling planting device having the seedling placing part for ten rows.

Drawings

FIG. 1 is an overall side view of a riding type rice transplanter.

Fig. 2 is an overall plan view of the riding type rice transplanter.

Fig. 3 is an explanatory view showing a folded structure portion in a plan view in a state of the transplanting operation of the seedling transplanting device.

Fig. 4 is a plan view showing a folded configuration part in a plan view in a folded state of the seedling planting device.

Fig. 5 is a front view showing a support structure of the soil preparation device with respect to the seedling planting device.

Fig. 6 is an exploded perspective view showing a structure of an end rotating body portion supporting a land preparation rotor.

Fig. 7 is a side view showing a configuration of a central rotor portion supporting a land preparation rotor.

Fig. 8 is a side view showing a structure of a central rotor portion supporting a land preparation rotor.

Fig. 9 is a side view showing a lowered state and a raised state of an end rotary body portion of the soil preparation rotor.

Fig. 10 is a front view showing a lowered state and a raised state of a central rotor portion and an end rotor portion of the soil preparation rotor.

Fig. 11 is a front view showing the central rotator portion and the end rotator portions of the soil preparation rotor in a folded state of the seedling planting device.

Detailed Description

Hereinafter, an example of an embodiment of the present invention will be described based on the description of the drawings.

Unless otherwise specified, the front-back direction and the left-right direction in the description of the present embodiment are described below. That is, in the paddy field working machine to which the present invention is applied, the traveling direction on the forward side (see arrow F in fig. 1 and 2) during the working travel of the travel machine body is "forward", the traveling direction on the backward side (see arrow B in fig. 1 and 2) is "backward", the direction on the right side (see arrow R in fig. 2) with reference to the forward posture in the forward and backward direction is "right", and similarly, the direction on the left side (see arrow L in fig. 2) is "left".

[ Integrated Structure of Paddy field work machine ]

Fig. 1 is a side view showing the whole of a riding type rice transplanter as a paddy field working machine of the present invention. Fig. 2 is a plan view showing the whole of the riding type rice transplanter.

As shown in fig. 1 and 2, the riding rice transplanter includes a pair of left and right

front wheels

1F and 1F that are steerable at the front of a travel machine body 1, and a pair of left and right

rear wheels

1R and 1R that are drive wheels at the rear of the travel machine body 1, and the riding rice transplanter is autonomously driven.

The

rear wheels

1R, 1R transmit power generated by an engine 20 of a power unit 2 provided in the front of the machine body. The power of the engine 20 is also transmitted to a fertilizer application device 4, which will be described later, mounted on the rear portion of the traveling machine body 1, and a seedling planting device 6, which is a ground working device, connected to the rear portion of the machine body frame 10 of the traveling machine body 1 via a vertically swingable lifting link mechanism 11. A soil preparation device 5 is provided in front of the seedling planting device 6, and the soil preparation device 5 includes a soil preparation rotor 50 that is rotationally driven around a rotational axis x1 extending in the lateral direction.

The traveling machine body 1 includes a driver section 3 on the rear side of the power section 2. In the driving unit 3, a steering unit 31 including a steering wheel 31a and the like is disposed in front of the driving unit pedal 30, and a driver seat 32 is disposed in rear thereof, and is configured to be able to be steered by riding on the driving unit 3. A step-on/step-off pedal 35 used when a vehicle is driven from the ground is provided below both lateral ends of the driver's part pedal 30.

As shown in fig. 2, side steps 22 are provided on both left and right sides of a hood 21 in which an engine 20 is built in the power unit 2, in front of the driver step 30. Is configured to be capable of riding and moving from the front side of the body via the side step 22.

As shown in fig. 1 and 2, a preliminary seedling table 12 is provided on the front portion of the traveling machine body 1 on the lateral outer side of the left and right side step plates 22.

Marking devices 24 are also provided on both lateral sides of the front portion of the traveling machine body 1. In fig. 1 and 2, the marking device 24 is supported in a storage posture bent upward along the front-rear direction of the travel machine body 1, but is used in a posture in which the tip end side of the upward bend is horizontal and extends outward in the lateral direction of the travel machine body 1 when marking a line constituting a travel index on a farmland.

As shown in fig. 2, the driver pedal 30 is formed such that: a width of the driver's part pedal 30 in the left-right direction at a position forward of the driver seat 32 is not constant, and a portion different in front-rear direction is generated. That is, the width of the driver pedal 30 in the left-right direction at a position closer to the rear of the driver seat 32 is formed to be wider than the width of the driver pedal 30 in the left-right direction at a position farther from the front side of the driver seat 32. Thus, a narrow portion 33 having a slightly narrower width in the left-right direction is present at a position farther from the front side of the driver seat 32, and a wide portion 34 having a larger width in the left-right direction than the narrow portion 33 is present at a position closer to the rear side of the driver seat 32.

More specifically, the width of the narrow portion 33 in the left-right direction is substantially the same as or slightly wider than the distance between the outermost sides of the side steps 22 existing on both sides of the power unit 2. The wide width portion 34 is set to a width of the following degree: is wider than the narrow part 33 and wider than the width in the left-right direction of the hopper 40 of the fertilizer application device 4 arranged on the back of the driver seat 32, and does not exceed the width in the left-right direction of the seedling stage 60 having the seedling placement part 60a with ten rows of the seedling transplanting device 6.

The riding type rice transplanter is provided with a fertilizer application device 4 as an example of an agricultural material supply device.

The fertilizer application device 4 includes: a hopper 40 for storing a powdered fertilizer as an example of agricultural materials; a delivery unit 41 for sequentially delivering the stored fertilizer from the hopper 40 by a predetermined amount; a delivery hose 42 for delivering the fertilizer; and a furrow opener 43 as a soil supply part for guiding the supplied fertilizer to a farmland.

The hopper 40 is a member formed by five container units having a storage space for powdered fertilizer arranged in a row in the left-right direction, and is located on the back side of the driver seat 32 and provided at the rear end of the travel machine body 1.

[ seedling transplanting device ]

As shown in fig. 1 and 2, a seedling planting device 6 as an example of the ground working device is coupled to a rear end portion of the lifting link mechanism 11.

The front end of the transplanting frame 61 of the seedling transplanting device 6 is connected to the rear end of the lifting link mechanism 11. The seedling planting device 6 comprises: ten seedling planting mechanisms 62 arranged in a row in the transverse direction of the travel machine body at the rear part of the planting frame 61; a seedling carrying table 60 provided above the transplanting frame 61; and five ground floating plates 63 mounted on the lower portion of the transplanting frame 61 in such a manner as to be arranged in the transverse direction of the traveling body, the seedling transplanting device 6 being constituted as a ten-row transplanting seedling transplanting device.

The seedling stage 60 includes ten seedling placement sections 60a configured to place mat-shaped seedlings in a lateral direction of the travel machine body. The seedling stage 60 is supported on the front side corresponding to the back side of the seedling stage 60a by a seedling stage support frame 65 erected from the transplanting frame 61, and is configured to be movable in the transverse direction of the machine body in a reciprocating manner. The seedling stage 60 is transferred to and fro in linkage with the seedling transplanting operation of the seedling transplanting mechanism 62, and seedlings are supplied from the seedling placing part 60a to each seedling transplanting mechanism 62.

The power of the engine is transmitted from the traveling machine body 1 side to the seedling planting device 6 through the planting drive shaft 13. The seedling planting device 6 is provided at the rear thereof with a chemical agent spreading device 64 for spreading a chemical agent to a field after planting of seedlings.

In the lowered operation state of the seedling planting device 6, each of the ground floating plates 63 is grounded to the surface of the farmland, supports the seedling planting device 6 in such a manner that the seedling planting depth of each of the seedling planting mechanisms 62 reaches a prescribed depth, and performs soil preparation in the vicinity of the seedling planting position of the seedling planting mechanism 62.

Each of the ground floating plates 63 is provided with a furrow opener 43, and the furrow opener 43 opens a furrow for guiding the fertilizer supplied from the fertilizer application device 4 to the mud surface and burying the fertilizer therein.

The seedling transplanting device 6 includes

seedling transplanting units

6R and 6L on right and left sides in the left-right direction, the

seedling transplanting units

6R and 6L are constituted by a combination of a plurality of seedling placing portions 60a, a plurality of seedling transplanting mechanisms 62, and a transplanting frame 61, the plurality of seedling placing portions 60a are arranged in a horizontal row along the left-right direction, the plurality of seedling transplanting mechanisms 62 are arranged so as to correspond to the seedling placing portions 60a, and the transplanting frame 61 supports the seedling placing portions 60a and the seedling transplanting mechanisms 62.

Each of the

seedling planting units

6R, 6L is connected to the lifting link mechanism 11 via the folding mechanism 7.

As shown in fig. 3 and 4, the folding mechanism 7 includes: a center frame 70C supported by the lifting link mechanism 11; a right end frame 70R connected to the right end of the center frame 70C so as to be rotatable about the vertical axis y 1; and a left end frame 70L connected to the left end of the center frame 70C so as to be relatively rotatable about the vertical axis y 2.

Further, of the right and left end frames 70R, 70L, the transplanting frames 61, 61 of the right and left

seedling transplanting units

6R, 6L are supported so as to be relatively swingable about upper and lower axial centers y3, y4 parallel to the upper and lower axial centers y1, y2, at the end opposite to the side connected to the center frame 70C.

[ soil preparation device ]

The soil preparation device 5 disposed in front of the seedling planting device 6 will be explained.

The soil preparation device 5 is a device used for flattening unevenness of a soil surface and soil blocks at a position forward in a traveling direction of the ground floating plate 63 of the seedling planting device 6, and includes: a soil preparation rotor 50 which is rotationally driven around a left-right lateral rotation axis x 1; a land preparation drive shaft 14 for transmitting power to a land preparation rotor 50; and an elevating mechanism 54 for changing the height of the land preparation rotor 50 relative to the ground.

The land preparation rotor 50 includes: a central rotating body portion 50C located at a central portion in the left-right direction; and end

rotor portions

50R and 50L arranged on both left and right sides in a direction along a rotation axis x1 of the central rotor portion 50C. The land preparation propeller shaft 14 extending from the traveling machine body 1 side is connected to the center revolving unit 50C, and the power of the engine 20 is transmitted to the center revolving unit 50C.

As shown in fig. 6, 10, and 11, the center rotor portion 50C and the

end rotor portions

50R and 50L include: a central drive shaft 51C that supports the central rotor portion 50C; and end

rotary shafts

51R, 51L supporting the left and right end

rotary body portions

50R, 50L.

The center drive shaft 51C and the

end rotation shafts

51R and 51L are each a square shaft having a substantially square rectangular cross section. A large number of solid rotating bodies 52 made of synthetic resin and having square fitting holes 52a formed therein are fitted to the center drive shaft 51C and the

end rotating shafts

51R and 51L formed of the square shafts. Thus, the center drive shaft 51C and the center rotor portion 50C are configured to be integrally rotatable, and the left and right

end rotor portions

50R and 50L are configured to be fitted to the

end rotation shafts

51R and 51L to be integrally rotatable.

The land preparation propeller shaft 14 and the central drive shaft 51C are linked via a bevel gear transmission mechanism, not shown. The center drive shaft 51C and the

end rotary shafts

51R and 51L are switched between a power transmission state and a power cutoff state by making and breaking the clutches by relative movement in the axial direction via the meshing clutch 53 provided at the shaft end portions of each other.

Since a large driving load is not applied to the land preparation rotor 50 as in the case of driving the wheels for running, the coupling amount between the center drive shaft 51C side and the

end rotary shafts

51R, 51L side in the meshing clutch 53 is set to be shallow. Therefore, when the right end frame 70R and the left end frame 70L are changed to the folded and stored posture by the folding mechanism 7 by rotating about the vertical axial centers y1 and y2 with respect to the center frame 70C, the engagement clutch 53 is changed from the engaged state to the disengaged state in conjunction with this operation, and the power transmission from the center drive shaft 51C to the

end rotation shafts

51R and 51L is interrupted.

When the right and left end frames 70R, 70L in the folded and stored positions are rotated about the vertical axes y1, y2 with respect to the center frame 70C in the opposite direction to the previous direction and returned to the extended position in which the axes of the

end rotation shafts

51R, 51L coincide with the rotation axis x1 of the center drive shaft 51C, the engagement clutch 53 is returned to the engaged state again, and power is transmitted from the center drive shaft 51C to the

end rotation shafts

51R, 51L.

[ suspension support structure of rotor for soil preparation ]

The lifting mechanism 54 for changing the ground height of the land preparation rotor 50 includes: a central suspension link mechanism 54C (corresponding to a suspension link mechanism) that supports the central drive shaft 51C; end

suspension link mechanisms

54R and 54L (corresponding to the other suspension link mechanisms) for supporting the left and right

end rotation shafts

51R and 51L; and an actuator 55 for causing the central suspension link mechanism 54C to perform an up-and-down operation.

The central drive shaft 51C is supported in a liftable manner by the central frame 70C via the central suspension link mechanism 54C, and the left and right

end rotation shafts

51R, 51L are supported in a liftable manner by the left and right

seedling planting units

6R, 6L via the end

suspension link mechanisms

54R, 54L.

The center suspension link mechanism 54C and the end

suspension link mechanisms

54R and 54L support both ends of the center drive shaft 51C and both ends of the

end rotation shafts

51R and 51L via a pair of right and left bent link members 56, and the bent link members 56 have boss portions 56a with bearings at lower end portions thereof.

The bent link member 56 has a fixed end portion on the opposite side of the boss portion 56a fixed to the center frame 70C at both end portions of the center drive shaft 51C and fixed to the insertion frame 61 at both end portions of the

end rotation shafts

51R, 51L.

The central suspension link mechanism 54C transmits the operating power of the driver 55 constituted by an electric motor fixed to the seedling stage support frame 65. The rotation of the actuator 55 is transmitted to the curved link member 56 via the sector gear 55a, the bell crank 55b, the operating lever 55C, and the like, and the central drive shaft 51C can be lifted and lowered. The bell crank 55b is fixed at its intermediate position to a link operation shaft 57, and simultaneously operates the left and right central suspension link mechanisms 54C via the link operation shaft 57.

An engaging mechanism 59 is provided to suspend opposite ends of the

operation interlinking shafts

58, 58 of the

link mechanisms

54R, 54L from opposite ends of the link operation shaft 57 in the axial direction, and to engage with each other when the ends approach each other, so as to rotate integrally. When the link operation shaft 57 and the

operation interlinking shafts

58, 58 are separated from each other, the engaging mechanism 59 is disengaged (see fig. 10), and the

operation interlinking shafts

58, 58 are rotatable.

That is, when the end rotating

body portions

50R and 50L and the

end suspension links

54R and 54L are moved laterally so as to be separated from the central rotating body portion 50C and the central suspension link 54C, the meshing clutch 53 is in the off state, and the interlocking by the engaging mechanism 59 is released.

The engagement/disengagement of the link operation shaft 57 and the

operation interlinking shafts

58, 58 by the engagement mechanism 59 is performed in the same manner as the engagement/disengagement of the meshing clutch 53. That is, the right end frame 70R and the left end frame 70L are engaged with and disengaged from the center frame 70C by the rotation of the folding mechanism 7 about the vertical axes y1 and y 2.

In this way, in a state where the engagement clutch 53 is in the disengaged state and the interlocking by the engagement mechanism 59 is released, the right and left

seedling planting units

6R, 6L can be folded from the operation state shown in fig. 3 in which the right and left

seedling planting units

6R, 6L are aligned in a horizontal row to the storage state shown in fig. 4 by rotating the right and left end frames 70R, 70L supporting the right and left

seedling planting units

6R, 6L about the vertical and upper axial centers y1, y2 and the vertical and upper axial centers y3, y 4.

In this folded state, as shown in fig. 11, the

end rotator portions

50R, 50L are in a state of being bored under the central rotator portion 50C, and are in a state of being compactly folded.

The reason why the end rotating

body portions

50R and 50L can be shifted to the lower positions in this way is that the interlocking by the engaging mechanism 59 is released, and the

operation interlocking shafts

58 and 58 released from the engagement with the link operation shaft 57 are in a freely rotatable state. That is, this is because the end

suspension link mechanisms

54R and 54L, which are lifted up together with the link operation shaft 57 to the state shown by the virtual line in fig. 9 by the driving of the actuator 55, are disengaged from the link operation shaft 57, and are in a state of largely drooping down to the state shown by the solid line in fig. 9.

[ other embodiments ]

Other embodiments will be described below. A plurality of other embodiments described below may be used in combination as long as no conflict occurs. The scope of the present invention is not limited to the embodiments.

(1) In the above-described embodiment, the following configuration is exemplified: the coupling amount of the engagement clutch 53 and the engagement mechanism 59 is set to be shallow so that the engagement clutch 53 is opened and closed and the engagement/disengagement of the engagement mechanism 59 is performed as the right end frame 70R and the left end frame 70L are rotated about the vertical axes y1 and y2 with respect to the center frame 70C by the folding mechanism 7, but the configuration is not necessarily limited to this, and the coupling amount may be set to be deep so that the

end rotation shafts

51R and 51L and the

operation interlocking shafts

58 and 58 are pulled out laterally outward by a manual operation to open and close the engagement clutch 53 and engage/disengage the engagement mechanism 59.

The other structure may be the same as that of the above-described embodiment.

(2) In the above-described embodiment, the center rotator portion 50C and the

end rotator portions

50R and 50L are shown as a structure in which the center drive shaft 51C and the

end rotation shafts

51R and 51L are constituted by square shafts and rotational power is transmitted to the land rotator 52, but the structure is not necessarily limited thereto.

For example, the land rotator 52 may be directly bonded to the center drive shaft 51C and the

end rotary shafts

51R and 51L, or a shaft having a cross-sectional shape other than a square shaft may be used.

The other structure may be the same as that of the above-described embodiment.

(3) In the above-described embodiment, the structure in which the

end rotator portions

50R and 50L are folded in a state of being bored into the lower side of the center rotator portion 50C is exemplified, but the structure is not necessarily limited to this structure. For example, the

end rotator portions

50R and 50L may be folded in a state of climbing upward of the center rotator portion 50C.

The other structure may be the same as that of the above-described embodiment.

(4) In the above-described embodiment, the example in which the electric motor is used as the actuator 55 constituting the driving source of the elevating mechanism 54 has been described, but the present invention is not necessarily limited to this structure, and for example, a hydraulic cylinder, an electric cylinder, or the like may be used.

The other structure may be the same as that of the above-described embodiment.

(5) In the above-described embodiment, the structure in which the positions of the

end rotator portions

50R and 50L are lowered so as not to change the position of the center rotator portion 50C at the time of folding is illustrated by way of example, but not limited thereto. For example, the position of the central rotor portion 50C may be raised or lowered without changing the positions of the

end rotor portions

50R and 50L.

The other structure may be the same as that of the above-described embodiment.

(6) In the above-described embodiment, the actuator 55 constituting the drive source of the elevating mechanism 54 is provided only at the position where the central suspension link mechanism 54C that performs the elevation of the central rotating body portion 50C is operated, but is not necessarily limited to this configuration, and may be provided at a position where the end

suspension link mechanisms

54R and 54L that perform the elevation of the end rotating

body portions

50R and 50L are operated, for example.

The other structure may be the same as that of the above-described embodiment.

(7) In the above-described embodiment, the example in which the electric motor is used as the actuator 55 constituting the driving source of the elevating mechanism 54 has been described, but the present invention is not necessarily limited to this structure, and for example, a hydraulic cylinder, an electric cylinder, or the like may be used.

The other structure may be the same as that of the above embodiment.

(8) In the above-described embodiment, the configuration in which the central rotator portion 50C and the

end rotator portions

50R, 50L are supported to the seedling planting device 6 via the folding mechanism 7 is exemplified, but is not necessarily limited to this configuration.

For example, although not shown, the

end rotator portions

50R and 50L may be configured to be separable from the center rotator portion 50C without the folding mechanism 7.

The other structure may be the same as that of the above embodiment.

Industrial applicability

The present invention is not limited to a ten-row transplanting machine, and can be applied to an eight-row transplanting machine having less than ten rows, and a transplanting machine having more rows than ten rows.

Description of the reference numerals

1: a traveling machine body;

5: a soil preparation device;

6R, 6L: seedling transplanting units;

7: a folding mechanism;

11: a lifting link mechanism;

50: a soil preparation rotor;

50C: a central rotator portion;

50R, 50L: an end rotator portion;

51C: a central drive shaft;

51R, 51L: an end rotating shaft;

53: a clutch mechanism;

54C: a suspension linkage mechanism;

54R, 54L: other suspension linkage mechanisms;

55: a driver;

60a: a seedling carrying part;

61: inserting the frame;

62: a seedling transplanting mechanism;

63: a floating plate for soil preparation;

70C: a central frame;

70R: a right end frame;

70L: a left end frame;

y1: an upper axis and a lower axis;

y2: an upper axis and a lower axis;

y3, y4: an upper axis and a lower axis;

x1: the axis of rotation.

Claims

1. A paddy field working machine, characterized in that sets:

2. The paddy field working machine according to claim 1,

the seedling transplanting unit is connected with the lifting connecting rod mechanism through a folding mechanism,

the folding mechanism is provided with: a center frame supported by the lifting link mechanism; a right end frame connected to a right end of the center frame so as to be rotatable about an upper and lower axis; and a left end frame connected to the left end of the center frame so as to be rotatable about an upper and lower axis,

and a right-side seedling planting unit and a left-side seedling planting unit, wherein the right-side seedling planting unit and the left-side seedling planting unit are supported by the planting frame in a manner that the planting frame can relatively swing around an upper axis and a lower axis parallel to the upper axis and the lower axis of the left side and the right side of the central frame, wherein the end of the right-side frame and the end of the left-side frame, which is opposite to the side connected with the central frame, are used for supporting the planting frame in the right-side seedling planting unit and the left-side seedling planting unit.

3. The paddy field working machine according to claim 2,

the drive device is provided with a central drive shaft for supporting the central rotating body portion and end rotating shafts for supporting the left and right end rotating body portions, wherein the end rotating shafts are coupled to the central drive shaft via a clutch mechanism capable of engaging and disengaging so as to release coupling between the shafts with respect to the central drive shaft,

4. The paddy field working machine as claimed in claim 3,

the end rotator portion is configured to: the end rotating body portion is movable to a position lower than the center rotating body portion in a state where the coupling between the shafts by the clutch mechanism is released.

5. A paddy field working machine as claimed in claim 3 or 4,

the seedling transplanting unit is provided with a floating plate for soil preparation,

the end rotator portion is configured to: the end rotating body portion is movable to a position below the land preparation floating plate in a state where the coupling between the shafts by the clutch mechanism is released.

6. A paddy field working machine as claimed in claim 3,

the central rotating body portion is configured to: the center rotor portion is movable to a position above the end rotor portions in a state where the coupling between the shafts by the clutch mechanism is released.

7. The paddy field working machine according to any one of claims 3 to 6,

the clutch mechanism is configured to be capable of changing on/off in accordance with a change in the posture of the end rotary body portion with respect to the central rotary body portion,

the clutch mechanism is configured to: the clutch mechanism is in a clutch on state in which the rotation axis of the end rotator portion is along the rotation axis of the central rotator portion, and the clutch mechanism is in an off state as the rotation axis of the end rotator portion is changed in a direction away from the rotation axis of the central rotator portion.

8. A paddy field working machine as claimed in any one of claims 1 to 7,

the seedling transplanting device is a ten-row transplanting seedling transplanting device provided with the seedling carrying part for ten rows.