JPH0761206B2 - Rice transplanter - Google Patents

Description

The present invention relates to a rice transplanter equipped with a grooving device for fertilizing.

[Conventional technology]

For example, there is known a rice transplanter disclosed in Japanese Utility Model Publication No. 62-202122, in which a grooving device is attached to a leveling float so that the vertical position can be adjusted so that fertilization and sowing can be selectively used. .

[Problems to be Solved by the Invention] In fertilization work, as in the case of the above-mentioned publication, there are cases where the depth of entry into the field is performed at a relatively shallow level and when it is performed at a relatively deep level. is there.

In other words, fertilization at a shallow level is useful in that it is easily absorbed by the roots of seedlings immediately after planting, and a good initial growth condition is obtained. However, the fertilizer effect will be diminished at the heading time when the fertilizer is grown to a considerable extent only by applying this shallow level of fertilization. Therefore, if fertilized at a deep level,
The fertilizer at the deep position effectively acts on the grown root, and an effective fertilizer effect at the time of heading is obtained.

In this way, it is necessary to take care not to damage the seedlings compared to the topdressing work performed on the surface of the field when the seedlings are grown, so that the fertilizer can be applied to the deep position with the grooving device. There is an advantage that there is no and an effective fertilizer effect at a deep position.

Therefore, it is efficient to apply not only so-called shallow-layer fertilization but also so-called deep-layer fertilization, so-called deep-layer fertilization, at the same time as planting seedlings. However, in such a state that the grooving device is thrust into the field, there is a problem that the grooving device is damaged when the direction of the machine is changed largely, such as turning of the machine, or a large amount of mud pushing causes damage to the rice field. is there. In addition, there is an inconvenience such as an extra resistance even when simply traveling in the field.

An object of the present invention is to provide a rice transplanter capable of favorably performing fertilization work by plunging a grooving device into a field and preventing the above-mentioned inconvenience due to rushing of the grooving device into the field when fertilization work is unnecessary. There is a point to do.

[Means for Solving the Problems]

In order to achieve the above object, the present invention is provided with an elevating device that can elevate a seedling planting device relative to a traveling machine body, and the elevating device is a plant that automatically elevates the seedling planting device following a field scene. The planting operation position and the raising operation position for forcibly raising the seedling planting device by canceling the raising / lowering control at the planting plant operating position are configured to be freely switchable and used for fertilizing the seedling planting device. The grooving device is provided with a level switching mechanism capable of switching the grooving device to a first level that is lower than the leveling float and a second level that is higher than the leveling float. And the seedling planting device, and the level switching mechanism positions the grooving device at the first level in an operating state of the seedling planting device with respect to the traveling body to a planting operation operation position. Operation of the seedling planting device to the raised operating position Characterized in that it is configured such that the operation groove unit in state is located at the second level.

[Action]

By the operation of the level switching mechanism, the fertilizer can be set to the first level, which is lower than the leveling float during fertilization work, that is, the work posture that plunges into the field, and the trencher is raised above the leveling float during non-fertilization work. To the second level,
That is, the retracted posture can be set apart from the field.

By the way, in turning or moving traveling without seedling planting in a rice transplanter, the seedling planting device is raised to the ground by an elevating device from the viewpoint of device protection. Also rises as it rises above ground.

However, there are the following problems in the case where the grooving device is floated to the ground only by the operation of raising and lowering the seedling planting device by the elevating device. In other words, in order to perform headland turning during planting work with fertilization, it is necessary to lift the entire seedling planting device to a height at which the grooving device whose working position is set to the bottom end is sufficiently raised above ground. The height is obviously higher than that without the grooving device, and it becomes necessary to raise and lower the seedling planting device by the height of the grooving device.

Therefore, in the present invention, it is possible to perform both the raising operation of the seedling planting device with respect to the traveling machine body and the relative raising movement of the grooving device with respect to the seedling planting device by the level switching mechanism. By doing so, only the required amount of elevation of the seedling planting device with respect to the traveling machine body can be raised, and the grooving device can also be floated to the required height. Therefore, compared to a structure in which the whole seedling planting device is raised and lowered with the grooving device protruding below the leveling float, the required amount of raising and lowering of the seedling planting device relative to the traveling machine can be reduced, It takes less time.

[Effect of device]

As a result, when necessary, the grooving device can be rushed into the field for good fertilization, and when it is not necessary to turn the grooving device, it is possible to avoid inconveniences such as damage to the grooving device and running resistance. In addition, since the required raising / lowering amount of the seedling planting device does not increase even though it is equipped with a grooving device, a preferable one in terms of work efficiency because the grooving device can be moved up and down quickly in comparison with the grooving device, We were able to provide a rice transplanter that can be used regardless of the depth of fertilization, shallow or deep.

〔Example〕

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

Fig. 4 shows a side view of the rear part of the riding type rice transplanter. This rice transplanter is constructed so that fertilization can be performed at relatively shallow and deep levels in the field at the same time when seedlings are planted. ing.

That is, as shown in FIG. 2 to FIG.
(1), a lifting device composed of a hydraulic cylinder (4) and a link mechanism (5) for the rear part of the traveling machine body (3) having a driver's seat (2)
(S) is connected to the seedling planting device (A), and the seedling planting device (A) is a transmission case (6), three chain cases
(7), ..., Seedlings for planting arms (9), (9), 6 rows provided in pairs at the left and right positions at the rear of each chain case (7) through a rotating case (8) It has a stand (10), three leveling floats (11), ... And this seedling planting device (A) is equipped with a fertilizer applying device (B).

This fertilizer applicator (B) is equipped with a hopper (1
2) ・ ・ Six feeding devices (13) for feeding fertilizer from the hopper (12) in synchronism with seedling planting operation ・ ・, Feeding device (13)
..Hose for shallow layer (14) that guides fertilizer from ....., In order to send fertilizer from this hose (14) ... to shallow level in the field, through leveler float (15) ) Attached to the shallow grooving device (16), the soil cover plate (17) placed at the rear of this grooving device (16), fertilizer from the pair of feeding devices (13) Hose for deep layer to guide (18)
Three groovers (19) for deep layers consisting of a drive rotation type disc (19a) and a guide plate (19b) for feeding fertilizer from 8) to a deep level in the field. It is configured to have respective soil cover plates (20) arranged at the rear of 19).

In addition, in the deep groove making device (19) ··· disk (19a) · · · the rotational power from the rotating case (8) is the first chain case
(21), transmission shaft (22), three second chain cases (23) ...
Power is transmitted through the grooving device (19),
The fertilization level can be changed by swinging the chain cases (21) and (23).

Also, the seedling planting device (A) is used in the field scene during seedling planting work.
A leveling float in the center so that you can freely move up and down following (P).
A mechanism (not shown) for detecting a change in the ground load of (11) and a control valve (not shown) of the hydraulic cylinder (4) are linked to each other, and thus the seedling planting device (A) is When automatically raising and lowering, set the operation lever (24) located on the side of the driver's seat (2) to the planting work operation position (AUTO) or the clutch disengagement position.
It is configured to be set to the (N) position.

By the way, when the operation lever (24) is set to the planting work operation position (AUTO), a clutch (not shown) for operating the seedling planting device (A) is engaged and operated, and the operation lever (24) is placed in the clutch disengagement position ( When set to (N), the clutch is operated to be disengaged, and when the operation lever (24) is operated in the raising operation position (UP) direction, the seedling planting device (A) is raised while the clutch is being operated.

Further, this rice transplanter is provided with a level switching mechanism (C) so that the trench digger (19) for deep layers can be pulled up to a position higher than the bottom surface of the leveling float (11) when not in operation.

That is, this level switching mechanism (C) is composed of a hydraulic cylinder (25) and a link (26) as shown in FIG.
This state is detected by the switch (27) only when 4) is set to the planting operation position (AUTO), and the control device
The hydraulic cylinder (25) is operated via the (28) and the solenoid valve (29), and the grooving device (19) is thrust into the field scene (P) at the first level (L).
If it is set to 1) and the operation lever (24) is set to a position other than the planting operation position (AUTO), operate the hydraulic cylinder (25) in the reverse direction to move the grooving device (19). Is set to the second level (L2) higher than the field scene (P).

In the deep-layer grooving device (19), the disc (19a) rotates in the direction shown by the arrow in FIG. 4, and as shown in FIG.
(19a) and the guide plate (19b) are arranged so as to form an acute angle so as to cut open the field, and after fertilization, as shown in Fig. 3, the shallow level near the seedlings (W) ... And 2
Deep level between the seedlings (W) and (W) (first level (L
1)) and fertilizer (m) ... Incidentally, the shallow level is set to several centimeters from the farm scene (P), and the deep level is set to about 12 centimeters from the farm scene (P).

In addition, each feeding device (13)
a) is stored and these six feeding rolls (13a) ...
Each of them is simultaneously driven and rocked by the rocking shaft (30), and the power from the rotating case (8) is driven by the rod (3) on the rocking shaft (30).
It is converted to reciprocating rocking force and transmitted via 1).

[Another embodiment]

The present invention is, for example, in addition to the above-described embodiment, for example, a groove maker (19) for deep layers
As shown in Fig. 6, by constructing the cylinder (19a) and the spiral body (19b), the fertilizer (m) ... I also drilled in
By constructing the level change mechanism (C) by configuring the base end of the cylindrical body (19a) to be pivotally swingable, and providing an actuator or an artificial operation system for performing this swing, It is also possible to implement so that the position of 19) can be switched to the first and second levels (L1) and (L2).

Further, as shown in FIG. 7, a groove maker (19) for a deep layer is provided with a rail-shaped guide member (19a) and an endless chain (19
b) and the endless chain (19b)
Excavate by driving the fertilizer (m)
In addition, the base end of the endless chain (19b) is configured to be pivotally swingable, and the level changer (C) is configured by providing an actuator or an artificial operation system for performing this swing, thereby creating a groove. It is also possible to implement so that the position of the container (19) can be switched to the first and second levels (L1) and (L2).

Further, in the present invention, the traveling machine body may be a walking type, and fertilizers having different properties may be used for the shallow layer and the deep layer.

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

[Brief description of drawings]

FIG. 1 is a view showing a level switching mechanism, FIG. 2 is a plan view of a deep-layer groover, and FIG. 3 is a view showing a positional relationship between seedlings and fertilizers,
FIG. 4 is a side view of the rear part of the rice transplanter, FIG. 5 is a rear view showing the fertilizer application system, FIG. 6 is another embodiment in which the deep-layer grooving device is configured in a spiral shape, and FIG. It is another embodiment in which the working groove device is configured as an endless chain type. (3) …… Running machine, (19) …… Grooving device, (A) …… Seedling planting device, (C) …… Level switching mechanism, (L1) …… First level, (L
2) …… Second level, (P) …… Field scene, (S) …… Elevator,
(AUTO) …… Positioning operation position, (UP) …… Upward operation position.

Claims (1)

[Claims] 1. A raising / lowering device (S) capable of raising and lowering a seedling planting device (A) with respect to a traveling machine body (3), wherein the raising and lowering device (S) is used by the seedling planting device (A) in a field. Planting work operation position (AUTO) that automatically moves up and down following the surface, and raising operation position that cancels the raising and lowering control at the planting work operation position (AUTO) and forcibly raises the seedling planting device (A). (UP) and is configured to be freely switchable, and the fertilizer grooving device (19) is attached to the seedling planting device (A), and the position of the grooving device (19) is adjusted from the leveling float (11). First lower
Level switching mechanism capable of switching between the level (L1) and the second level (L2) at a position higher than the leveling float (11)
(C) is provided across the grooving device (19) and the seedling planting device (A), and the level switching mechanism (C) is a seedling planting device for the traveling machine body (3). In the operating state (A) of the planting work operation position (AUTO), the grooving device (19) is positioned at the first level (L1) and the raising operation position (UP) of the seedling planting device (A) is set. The rice transplanter configured such that the grooving device (19) is located at the second level (L2) in the operating state of.