JPH02145115A - Rice transplanter with fertilization device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention incorporates a seedling planting device that can freely move up and down relative to a seedling planting device that can move up and down with respect to the machine body, and a fertilizer supply unit that drops fertilizer to a predetermined deep position in muddy soil. The present invention relates to a rice transplanter with a fertilizing device which is installed in a state where the lowermost end of its relative vertical movement range is located further below the lowermost end position of the seedling planting device.

[Conventional technology]

Conventionally, in this type of rice transplanter with a fertilization device, if the seedling planting device is unexpectedly lowered during a pre-work inspection in a barn or warehouse, etc., when the seedling planting device reaches the lower end position, the ground float The system was designed to detect abnormal pressure using a pressure sensor installed at the top and stop the descent.

[Problem to be solved by the invention]

However, when trying to apply this seedling planting device protection means to a rice transplanter equipped with a deep layer fertilizer supply body, the fertilizer supply body is grounded prior to the grounding float before the seedling planting device protection means is activated. As a result, this fertilizer supply body was sometimes damaged. There were no special measures in place to deal with this.

An object of the present invention is to provide a system that can prevent damage to the fertilizer supply body by adopting a rational mechanism.

[Means to solve the problem]

Characteristic configurations according to the present invention include: (1) providing a first switching mechanism that stops the raising and lowering of the seedling planting device or switches it to the raised state when the fertilizer supply body moves upward relative to the seedling planting device; A check mechanism is provided to check the operation of the first switching mechanism, and a second switching mechanism is provided to switch this check mechanism between a check state and a non-check state.The effects are as follows. It is as follows.

[For production]

To explain using the specific example in Fig. 2, ■ As shown in Fig. 2 (rl), the planting lever (41)
is operated to the lowered position (D) to lower the seedling planting device (A), and when the fertilizer supply body (11) touches the ground and moves upward, the approximately rhombic spool constituting the first switching mechanism (53) By forcibly moving the driving member, this spool driving member (53
) is engaged in the engagement groove (55) of the scale-type swinging arm (3
The raising/lowering valve spoon 2A) of the seedling planting device (A) is forcibly switched to the neutral position via the engagement bin (36a) of 6) to stop the descent of the seedling planting device (A).

■ As shown in FIG. 2(A), the engagement groove (55) of the spool drive member (53) is connected to the lever-type swinging arm (3).
A first engaging part (55A) that allows the engaging bottle (36a) of 6) to move freely, and a second engaging part (55A) that forcibly moves the engaging bottle (36a) to the neutral position.
55B>, and when the planting lever (41) is operated to the planting position, the second engagement portion (55B) engages the engagement pin (
36a), and serves as a check mechanism for the first switching mechanism (53), which allows the engagement pin (36a) to swing freely.

Therefore, the seedling planting device (A) can be moved up and down freely.

〔Effect of the invention〕

As described above, with the configuration in which the second switching mechanism (43) controls the checking mechanism (55) that controls the activation and non-operation states of the first switching mechanism (53), seedlings can be planted according to the working state and the non-working state. The lowering of the attachment device (A) can be controlled, and damage to the seedling planting device such as the fertilizer supply body can be avoided.

Further, in this case, there is no need to intentionally provide a grounding sensor on the grounding float to set the lowering limit of the seedling planting device, and the first switching mechanism or the like can also be used.

〔Example〕

A fertilization device attached to a riding rice transplanter as a paddy field working machine will be explained.

As shown in Figure 5, the riding type rice transplanter has a traveling machine (not shown).
At the rear of the is a hydraulic cylinder (20) driven lifting link mechanism (
1), a seedling planting device (A), a fertilizing device (B), an insect repellent spraying device (C) that sprays insect repellent onto mat-shaped seedlings on a seedling stand (6), which will be described later, and immediately after planting. A herbicide spraying device (D) that sprays herbicide is attached to the screen of the seedling planting device (A), which includes a feed case (3) that receives planting power from the driving unit for the traveling machine, and a feed case (
3) Three planting cases (18) connected to each other to receive power transmission, a seedling planting device (5) attached to these planting cases (18), and a left and right horizontal slider connected to each other during planting. It is equipped with a movable seedling stand (6) and a vertical feeding mechanism (21) that vertically feeds the mat-shaped seedlings toward the seedling take-out port.

Next, a mechanism for raising and lowering the seedling planting device (A), the fertilizing device (B), the insect repellent spraying device (C), the herbicide spraying device (B), etc. will be explained. As shown in FIG. 1, the control valve (2) for the hydraulic cylinder (20) that drives the lifting link mechanism (1) and the rear fulcrum ( X) The sensor flow that swings up and down around (22) and the release wire (23)
A configuration is adopted in which the planting depth of the seedling planting device (A) is always constant. That is, control valve (2)
The swinging drive arm (2 people) is connected to the push/pull spool (2 people).
4a), and this swinging drive arm (2a).
A scale-type swinging arm (36) is fixed to the other end of the rotating shaft (24) integrally formed with 4a). On the other hand, the sensor flow
On the float (22) side, a balance-type sensor arm (38) is swingably supported on the upper surface of the sensor float (22) via a bracket (37), and a sensor is attached to one end of the balance-type sensor arm (38). A compression spring (39) that biases the float (22) downward is linked, and the balance type swing arm (36) is connected to the other end via the release wire (23).
) are linked together. Therefore, for example, when the ground pressure becomes small and the sensor float (22) is lowered by the compression sublink (39), the release wire (2
3) The inner wire allows the balance-type swinging arm (36
) is rotated, and the push/pull spool (2A) is pulled out by the swinging drive arm (24a) connected to the balance swinging arm (36), and the seedling planting device (A) is moved to the sensor flow. ) Lower the ground pressure in (22) until it reaches the set value. For automatic plowing depth control as described above, the operating lever (41) used during manual operation is connected to the rotating shaft (24).
The push/pull spool (2A) is fixed to the boss (42) which is loosely fitted into the boss (42) via a U-shaped rod (43), and the push/pull spool (2A) is pushed into the boss (42) from only one direction. An operating arm (44) is provided for abutting action, and the operating lever (41) is moved to the raised position (
U) A forced lift control device is configured to forcibly raise the seedling planting device (A) etc. by operating the device.

The herbicide spraying device (D) will be explained. As shown in Fig. 5, this herbicide spraying device (D) includes a herbicide storage hopper (45), and a herbicide falling from this hopper (45) is collected through a plurality of through holes provided in the circumferential direction. A horizontal rotating plate (46) that pays out the herbicide at a constant rate, a rotating blade (47) that sprays the herbicide released from the rotating plate (46) backwards, and a rotating blade (47) that sprays the herbicide backwards. It is composed of a dispersion plate (48) that evenly disperses the blown herbicide over the entire planting width, and sprays the herbicide on the screen after planting.

The horizontal rotary plate (46) is wire-coupled to a fertilization device feeding arm (49) that is coupled to a seedling planting device (5);
In addition to being driven by power synchronized with planting, the rotating blade (47) is also driven by a dedicated motor.

Next, the insect repellent spraying device (C) will be explained.

As shown in FIG. 5, this insect repellent spraying device (C) includes an insect repellent storage hopper (50) and a
), and a swing link (52) connecting the vertical feeding mechanism (21) and the feeding roll (51), and a seedling stand (6).
Insect repellent is sprayed onto the mat-shaped seedlings by intermittent rocking in conjunction with the vertical feeding of the feed roll (51) stretched over its full width.

As shown in FIG. 5, the fertilizer application device (B) includes a fertilizer storage hopper (7), a feeding mechanism (8), and a first downstream hose (8A) for guiding fertilizer from the funnel part (8A) of the feeding mechanism (8).
9), a shallow layer fertilizer application groove device (10) that guides the fertilizer falling from the first downstream hose (9) into the field surface, and a plurality of shallow layer fertilizer application groove devices (10). Fertilizer supply bodies for deep fertilization (11
), and a second downstream hose (34) for supplying fertilizer to the fertilizer supply body (11). Here, shallow layer fertilization refers to the operation of dropping fertilizer to a depth of about 5 cm, and deep layer fertilization refers to the operation of dropping fertilizer to a depth of about 15 cm to 20 cm.

Next, the structure of the fertilizer supply body (11) for deep fertilization and its mounting structure will be explained. As shown in FIG. 4, this fertilizer supply body (11) has a receiving part (12a) for receiving fertilizer.
a resin rotating body (12) formed on the outer peripheral surface, metal side walls (13) integrally fixed to the rotating body (12) from both sides with screws, and the side wall (13).
), (13), and a cam member (15) which is loosely fitted to the rotational drive shaft (14) and is in a fixed state.
and extruding tools (16) supported at equal pitches in the circumferential direction with respect to the rotating body main body (12). The extrusion tool (16) includes a piston (17a) that is positioned on the receiving portion (12a) to extrude the fertilizer placed thereon, and a piston (17a) that supports the piston (17a) and moves the cam member (16) at the axis of the rotating body. The push-out body (17) is made up of a piston rod (17b) that comes into contact with the cam member (15), and a spring (35) that presses and biases the push-out body (17) against the cam member (15).

With the above configuration, when the rotational drive shaft (14) rotates, the extrusion tool (16) also rotates along with the rotating body (12). At this time, since the cam member (15) is fixed, the extruded body (17) moves along the outer peripheral surface of the cam member (15) and moves in its radial direction relative to the rotating body (12). Performs forward and reverse movement.

Therefore, when the receiving part (12a) is located above the mud surface to receive fertilizer, the extruded body (17) is placed above the mud surface.
12a), and when extruding at a predetermined position within the mud surface, the extrusion position is switched to the extrusion position in which it is moved to the discharge opening end position of the receiving part (12a). In the figure, (33) is an arcuate lid body, and the rotation phase of the rotating body (12) is about 160 from the position where the fertilizer is received at the receiving part (12a) to the discharge position within the mud surface. ”The receiving part (1
2a), and is attached to a fertilizer supply transmission case (26) to be described later.

Next, the transmission structure of the fertilizer supply body (11) will be explained. As shown in FIG. 3, a relay transmission case (19) to the fertilizer supply body (11) is attached to the left side of the feed case (3) in a cantilevered manner, and each of the planting cases (1
8) Brackets (24) are erected at the rear ends, and a transverse transmission shaft (25) extends between these brackets (24).
is located below the feeding mechanism funnel part (8A).

The transverse transmission shaft (25) is supported in a penetrating state at the rear end of the relay transmission case (19), and is rotationally driven by receiving power transmitted from the relay transmission case (19) side. With respect to this horizontal transmission shaft (25),
Transmission case (26) for fertilizer supply body in contact with (24)
) is fitted onto the outside through a bushing, and the horizontal transmission shaft (2
5) It is configured to receive power transmission. The transmission case (26) for the fertilizer supply body is arranged in an inverted shape when viewed from the side, and the transmission chain (27) is connected to the first sprocket (28) directly connected to the horizontal transmission shaft (25).
and a second rotary drive shaft directly connected to the fertilizer supplier side rotary drive shaft (14).
The fertilizer supplier side rotary drive shaft (
14). On the other hand, the seedling planting device (
5) From the swing arm support part (5A) of
0) is extended, and this bracket) (30)
An adjustment rod (31) hanging down from the transmission case (26) for the fertilizer supply body passes through the adjustment rod (31) vertically.
A spring (3) biases the fertilizer supply transmission case (26) downward between the lower end of ) and the bracket (30).
2) is the bridge. Moreover, the transmission case (26) for the fertilizer supply body can be vertically swung around the axis of the horizontal transmission shaft (25), and is biased downward to a certain depth by the spring (32), while being able to move through extremely hard muddy soil. If there is an obstacle such as a layer or stone, it swings upward to escape.

Therefore, even if the fertilizer supply body (11) is for deep fertilization where it can protrude further below the lowest position of the relative vertical movement range of the seedling planting device (A), it has a structure that is resistant to obstacles. There is.

Next, the control when lowering the seedling planting device (A) during the seedling planting operation and during the non-operation will be explained. As mentioned above, even if the fertilizer supply body (11) can swing upward relative to the seedling planting device (A), there is a certain limit, and if it is unexpectedly forcibly lowered when performing tests in a warehouse etc. There is a risk of damage.

Therefore, the following control mechanism is provided.

In other words, as shown in FIG.
A substantially diamond-shaped spool drive member (53) that can be engaged with the engagement pin (36a) of 36) is provided, and this spool drive member (53) is connected to the release wire (40) and both (40), ( The transmission case for the fertilizer supply body (26) is
). An engagement groove (55) that engages with the engagement pin (36a) of this spool drive member (53) is connected to a first engagement portion (55A) that allows free movement of the engagement pin (36a). The second engagement portion (55A) has a narrower movement range of the engagement pin (36a”) than the first engagement portion (55A).
55B) are formed vertically in communication with each other. and,
This spool drive member (53) is capable of swinging by its own weight using the connection point (Y) with the scale type transmission arm (54) as a fulcrum, and the U-shaped rod linked to the planting lever (41). 43) supports the free end side. Therefore, as shown in FIG. 2(A), when the planting lever (41) is tilted forward and set to the planting position via the lowered position, it is lifted by the U-shaped rod (43) and the The spool drive member (53) is maintained in a substantially horizontal position.

In this state, the engagement pin (36a) is connected to the engagement groove (55).
) is located at the lower first engaging portion (55A).

Therefore, the engaging bin (36a) can move freely within its movable range, and when the seedling planting device (A) is lowered to the planting position, the engaging bin (36a) can be further moved up and down by the vertical movement of the sensor float (22). Automatic plowing depth control is possible by forward and reverse movement based on the neutral position (36a).

On the other hand, as shown in Figure 2 (b), the planting lever (41)
When set to the lowered position (D), the spool drive member (53) swings downward by that amount since the U-shaped rod (43) is located downward, and the engagement groove (55) The upper second engagement portion (55B) engages with the engagement pin (36a). Then, the engagement bin (36a) is in contact with one end iM(a) of the second engagement part (55B), and in this state, the seedling planting device (A> descends, and during the descent When the fertilizer supply body (11) collides with the warehouse floor or the like and moves upward against the seedling planting device (A), the scale type transmission arm (54) rotates and the spool drive member (53) It is pulled as shown by the imaginary line.Then, the one end ffl
In (a), the engagement pin (36a) is pushed and the push/pull spool (2A) is pushed to the neutral position. Therefore, the seedling planting device (A) stops descending.

As described above, the spool drive member (53) etc. are attached to the seedling planting device (A).
The first switching mechanism stops the lifting and lowering of the spool drive member (5
3), the engagement groove (55) is a check mechanism that checks the first switching mechanism (53), and this check mechanism is switched between a check state and a non-check state, and the U-shaped rod (43) is connected to the second switch mechanism (53). It is called a switching mechanism.

[Another example]

■ The first switching mechanism (53) etc. are connected to the fertilizer supply body (11).
) to detect the rise of the seedling planting device (A), and the push/pull spool (2A) based on the sensor operation.
It may also be configured with an actuator that forcibly drives.

(2) The first switching mechanism (53) may be one that switches the seedling planting device (A) to the raised state.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an example of a rice transplanter with a fertilization device according to the present invention,
FIG. 1 is an overall configuration diagram showing a lifting control device for a seedling planting device, etc.; FIG. The figure is a side view showing the transmission structure to the fertilizer supply body, FIG. 4 is a sectional view showing the fertilizer supply, and FIG. 5 is an overall side view. (A)・・・Seedling planting equipment! , (11)...
Fertilizer supply body, (43)...Second switching mechanism, (5
3)...First switching mechanism, (55>...
Check mechanism.

Claims (1)

[Claims] Fertilizer supply body (1
1) into a seedling planting device (A) that can be raised and lowered with respect to the aircraft body,
A rice transplanter with a fertilization device installed so as to be relatively vertically movable and located further below the lowest end position of the seedling planting device (A) at the lowest end of the range of relative vertical motion, wherein the fertilizer supply device When the body (11) moves upward relative to the seedling planting device (A), a first switching mechanism (53) is provided which stops the lifting and lowering of the seedling planting device (A) or switches it to a raised state. The fertilizer application device is equipped with a checking mechanism (55) for checking the operation of the first switching mechanism (53), and a second switching mechanism (43) for switching the checking mechanism (55) between a checking state and a non-checking state. Rice transplanter.