JP2514268B2 - Fertilizer application equipment for rice transplanters - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a rice transplanter in which a seedling planting mechanism including a pair of planting claws at both ends of a rotating case and a feeding roll for fertilization are interlockingly connected. Fertilizer applicator.

[Conventional technology]

Conventionally, in the above-mentioned rice transplanter fertilizer application, for example, an actual Kaihei 2-17
As disclosed in Japanese Unexamined Patent Publication No. 016, the rotating case and the payout roll are interlocked and linked by a set of crank link mechanisms, and the payout roll is reciprocally rotated, or is forwardly rotated in one direction via a one-way clutch. Then, the fertilizer was fed out in synchronization with the planting operation.

[Problems to be Solved by the Invention]

In the roll driving means, since the feeding roll rotates at a non-constant speed, the flow of fertilizer in the lower part of the hopper supporting the feeding roll in the lower part becomes unstable, and the fertilizer does not flow into the feeding recess formed on the outer peripheral surface of the roll. It tends to be uniform, and it has been found that it is effective to continuously rotate the payout roll in one direction at a constant speed in order to eliminate such a problem.

Therefore, as one means for continuously rotating the payout roll in one direction at a constant speed, the rotation case for planting, which is continuously rotated in a uniform speed in one direction, and the payout roll are wound and interlocked using a chain or a timing belt. The means to do was considered.

However, in the case of winding interlocking, installation of the interlocking mechanism requires space, so not only is the existing seedling planting device required to be extensively modified, but also means for preventing mud adhesion to chains and belts is required. However, there were difficulties in practical use.

The present invention has been made by paying attention to such an actual situation, and it is possible to perform uniform fertilizer feeding by continuously rotating the feeding roll at a constant speed using a rotating case for planting without using a chain or a belt. In addition, it is an object of the present invention to provide a fertilizer applicator for rice transplanters, which has a high pay-out maintenance property.

[Means for solving the problem]

In order to achieve the above-mentioned object, in the present invention, the rotating case and an intermediate shaft arranged parallel to the feeding roll are interlocked and connected by two sets of crank link mechanisms having different rotating phases, and the intermediate shaft is connected. Is configured to be continuously rotated in a fixed direction in synchronization with the rotating case, and the intermediate shaft and the feeding roll are gear-interlocked to drive the feeding roll in a direction opposite to the rotating case. The intermediate shaft is arranged on the front side of the delivery roll in the machine body, and the brush for measurement is provided in sliding contact with the rear side of the delivery roll.

[Work]

According to the above configuration, with the forward rotation of the rotating case, the feeding roll is also continuously rotated backward at a constant speed to continuously feed the fertilizer. At this time, the brush that slides on the rear side of the pay-out roll performs the scraping measurement, and the predetermined amount of pay-out is performed.

When the tip of the brush wears out due to long-term use, the brush is advanced and returned to the predetermined sliding contact state, but in this case, the intermediate shaft for driving the roll is on the front side of the roll opposite to the side where the brush is present. Since it is placed horizontally, it does not interfere with brush adjustment.

〔The invention's effect〕

As described above, according to the present invention, the feeding roll can be continuously rotated in a constant direction at a constant speed to enable uniform feeding without unevenness, and the roll driving mechanism can be rationally installed. It was possible to construct a fertilizer layer for rice transplanters with easy brush adjustment and excellent maintainability.

〔Example〕

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

FIG. 1 shows a side surface of a 6-row planting section that is connected to the rear of the riding type rice transplanter.

The seedling planting device (1) includes a planting transmission case (2) connected to a rice transplanter main body on the left side outside the figure through a lifting link mechanism, a seedling stand (3) that reciprocates left and right, and a planting transmission case (2). ) Rearwardly extending three planting cases (4), a pair of seedling planting mechanisms (5) provided on the left and right sides of the rear of each planting case (4), and a ground leveling float (6), The seedling planting mechanism (5) has a claw case (8) provided with planting claws (8) at both ends of a rotating case (7) that rotates forward at a constant speed around the horizontal axis (P). 9) is configured so that the posture can be changed, and the rotation case (7) is planted twice by one rotation.

Each planting case (4) is provided with a clutch (10) at the base thereof, so that by selecting the clutch (10), two, four, and six planting states can be obtained. Has become.

A fertilizer application device (11) is connected and supported via a frame (12) behind the seedling planting device (1) configured as described above.

This fertilizer application (11) consists of two shallow layer fertilizers that are shallowly applied to the sides of two planting articles in one planting case (4) and one article that is deeply applied to the rear of the planting case (4). Three sets of deep fertilizers are arranged in parallel for each planting case (4), and one unit of fertilizer application (10) will be described in detail below.

As shown in FIG. 3, the inside of the fertilizer storage hopper (13) installed at the upper part of the fertilizer application device (11) is divided into three sections by the left and right partition walls (14), and the left and right sections (a) ，
Fertilizers for shallow layers are stored in (a), fertilizers for deep layers are stored and stored in the central section (b), and feeding rolls (15) are provided at the lower ends of the sections (a) and (b). A fertilizer feeding mechanism (16) and a feeding funnel (17), each having an interior, are attached.

The fertilizer fed from the left and right fertilizer feeding mechanism (16) is guided to the shallow fertilizer grooving device (19) attached to the float (6) via the feeding funnel (17) and the downflow hose (18), The fertilizer fed from the fertilizer feeding mechanism (16) at the center is supplied to the fertilizer ditch formed on the rice field by the grooving device (19), and is passed through the feeding funnel (17) and the downflow hose (18) to the deep layer. It is guided to the fertilizer application mechanism (20) and supplied to the fertilizer application groove formed by the disc-shaped embedding disk (21).

As shown in FIG. 3, the three feeding rolls (15) are mounted on a common feeding shaft (22) horizontally supported horizontally, and the feeding shaft (22) and the seedling planting mechanism (5). And are linked together as follows.

On the front side of the fertilizer feeding mechanism (16), an intermediate shaft (23) is laid horizontally in parallel with the feeding shaft (22).
And the feeding shaft (22) are attached to one end of each gear (2
It is interlocked with 4) and (25). And the intermediate axis (2
Both ends of 3) are respectively linked to the left and right seedling planting mechanisms (5) via two sets of crank link mechanisms (26a) and (26b).

The crank link mechanisms (26a) and (26b) are connected to the intermediate shaft (2
Driven arms (27a) and (27b) attached to both ends of 3),
Claw cases (9) at both ends of each rotating case (7),
The drive arm (28
a) and (28b), pusher rods (29a) and (29b) that pivotally connect the driven arms (27a) and (27b) to the drive arms (28a) and (28b), respectively, and , The crank link mechanisms (26a) and (26b) are set so that the rotation phases thereof differ by 90 °.

Therefore, by continuously rotating the rotating case (7) forward at a constant speed, the three feeding rolls (15) are continuously rotated backward at a constant speed.

By replacing the gears (24) and (25), the payout roll (15) can be shifted with respect to the rotation speed of the rotating case (7), and the rotating case ( When 7) is changed, the feeding roll (15) is also changed, so that the amount of fertilizer applied per unit area of the field can be made constant. For example, when increasing the stock spacing, the rotation speed of the feeding roll (15) is increased to increase the amount of fertilizer feeding per one rotation of the rotating case (7). Conversely, when adjusting the stock spacing, the feeding roll (15) is decelerated. And turning case (7) 1
The amount of fertilizer fed out per revolution is reduced.

Next, the detailed structure of the deep-layer fertilization mechanism (20) is shown in FIG. 9 and FIG.
It will be described with reference to FIG.

An auxiliary case (31) is attached to the upper part of the rear end of each planting case (4), and the rotation shaft (32) laterally supported by the auxiliary case (31) and the drive shaft of the planting rotation case (7). (33) is linked and linked with a chain (34),
A transmission case (35), which is attached to the side surface of the auxiliary case (31) so as to be vertically swingable, extends rearward, and is linked at its free end to the rotary shaft (32) through a chain (36). An embedded disc (21) is attached.

A large number of recesses (37) for accommodating fertilizer are formed on the outer peripheral surface of the embedding disk (21) at a constant circumferential pitch, and
Inside each recess (37), a fertilizer push-out tool (39) biased by a spring (38) is provided so as to be able to advance and retract in the radial direction. A cam (40) fixed to the transmission case (35) side is provided at the center of the embedding disc (21), and as the embedding disc (21) rotates forward, the fertilizer push-out tool (39) is moved. The support rod (39a) follows the outer peripheral surface of the fixed cam (40) so that the fertilizer pushing tool (39)
Is being driven back and forth. In other words, the fertilizer push-out tool (39) from the fertilizer supply position above where the embedded disc (21) is exposed on the rice field to the vicinity of the fertilizer discharge position in the rice field.
Is in a retracted posture, and the shape of the cam (40) is set so that the push-out tool (39) is pushed out from the fertilizer discharge position to the vicinity of the fertilizer supply position to the advanced posture along the outer peripheral surface of the disc.

In addition, a recess (3
A strip-shaped guide (41) that prevents the fertilizer supplied to 7) from leaking out is placed and fixed. The guide (41) is projected downward near the fertilizer discharge position to form a gap (S) for discharging the fertilizer between the outer peripheral surface of the disc and the guide (41), and the guide (41) further reduces the disc. It is extended rearward and is connected to a stay (42) extending from the transmission case (35). In addition, (43) in FIG. 9 is a sludge scraper on the side of the disk attached to the stay (42), and (44)
Is a sludge scraper on the outer peripheral surface of the disk, and (41a) is a scraper for discharging fertilizer mounted on the inner surface of the guide (41) behind the gap (S).

A fertilizer guide (45) fixed to the transmission case (35) is installed at the fertilizer supply position of the deep-layer fertilizer application mechanism (20). The fertilizer guide (45) is formed in a front and rear elongated rectangular tube shape, and its upper end is connected to the downflow hose (18) through a bellows (46).

In addition, the inside of the fertilizer guide (45) is equipped with a clogging prevention tool (48) that can swing back and forth via the support shaft (47), and an arm attached to the outer end of the support shaft (47). (47a) and the drive arm (32a) attached to the projecting end of the rotary shaft (32) at the base end of the transmission case (35) are linked via the rod (49), and as the rotary shaft (32) rotates. The clogging prevention device (48) is designed to swing within the guide.

The transmission case (35) is connected to the bracket (50) provided at the rear of the planting case (4) through the bolts (51) with knobs so that the transmission case (35) can be adjusted up and down. Use the mounting hole (52a) of to set the disc height to 3
It can be adjusted stepwise and can be lifted higher than the bottom surface of the float (6) using the uppermost mounting hole (52b).

Further, the bracket (50) can slide up and down with respect to the fixed bracket (53) of the planting case (4), and
It is supported by a spring (54) with a downward bias, and when the embedding disk (21) hits a foreign object in the field during fertilization work, it moves upward together with the transmission case (35) against the spring (54). It is possible to retreat.

The same fertilizer feeding mechanism (16) is used, and the feeding amount adjusting structure will be described below.

As shown in FIGS. 4 and 5, the pay-out roll (15)
Consists of a roll body (15a) externally fitted to the feeding shaft (22) consisting of a hexagonal shaft so that torque can be transmitted, and a movable roll portion (15b) that is slidably adjustable in the axial direction with respect to this.
By slidingly adjusting the movable roll portion (15b), the axial width of the fertilizer feeding concave portion (56) formed between the roll body (15a) and the movable roll portion (15b) can be changed. Has become.

The movable roll portion (15b) is screw-fitted to an adjusting sleeve (57) which is fitted to the payout shaft (55) so as to be relatively rotatable, and the movable roll portion (57) is rotated by rotating the adjusting sleeve (57). 15b) is screw fed in the axial direction,
A gear (58) for rotating the adjustment sleeve (57) is fixed to the outer end of the sleeve. Adjusting sleeve (57)
A spring ball (59) incorporated in the roll body (15a) is pressed against the inner end of the roller body (15a), (5a).
A moderate resistance is given to the relative rotation of 7).

The feeding roll (15) for shallow fertilization and the feeding roll (15) for deep fertilization are provided with one operation shaft (6
It is adjusted by 0).

The operation shaft (60) is provided on the front side of each fertilizer feeding mechanism (16).
Is slidably supported to the left and right. The operation shaft (60) has a gear (58) of the feeding roll (15) for shallow fertilization.
The first operation gear (61a) that can be engaged with a) and the second operation gear (61b) that can be engaged with the gear (58b) of the feeding roll (15) for deep-layer fertilization are fixed to each other. When the operating shaft (60) is slid to the right in, all the first operating gears (61a) move all the feeding rolls (1) for shallow-layer fertilization.
When the operation shaft (60) is slid to the left by engaging with the gear (58a) of 5), all the second operation gears (61b) are all gears of the feeding roll (15) for deep fertilization. When the operation shaft (60) is engaged with (58b) and the operation shaft (60) is placed at the left-right intermediate position as shown in FIG. 3, the first and second operation gears (61a) and (61b) are either gears (58a), ( 58b) also brings about a non-occlusal neutral state.

As shown in FIGS. 7 and 8, the operating shaft (6) is attached to the bracket (62) which penetrates and supports one end of the operating shaft (60).
There is a switching lever (63) for sliding 0) left and right. That is, the tip of the arm (63a) extending from the base of the switching lever (63) is engaged with the pin (64) mounted on the operation shaft (60) through the long hole (65), and the switching lever ( The above-mentioned three states can be obtained by the horizontal swing of (63). Adjusting the feed amount of shallow fertilization by rotating the handle (66) provided at the tip of the operating shaft (60) while switching to shallow layer adjustment or deep layer adjustment by swinging the switching lever (63). Alternatively, the feeding amount of the deep-layer fertilizer can be adjusted separately with the same operation shaft (60). The switching lever (63) is held at the switching position in the three states by the engagement of the spring ball (67) provided on the bracket (62) and the three recesses (68) provided on the arm (63a). It is possible. Further, the handle (66) is urged to swing and retract toward the bracket (62) by the spiral spring (69), and elastically engaged in the retracted posture by the holder (70) made of a leaf spring provided in the bracket (62). Held together.

The auxiliary mechanism provided in the fertilizer feeding mechanism (16) will be described below.

Reference numeral (71) in FIG. 4 is a pointer fixed to the feeding shaft (22), and a main scale formed on the outer periphery of the adjusting sleeve (57) at a constant pitch in the axial direction is provided on the outer end of the movable roller portion (15b). To accurately check the axial position of the movable roller part (15b), that is, the amount of feeding, by reading the edge and reading the auxiliary minor scale on the outer end surface of the gear (58) with the pointer (71). You can do it.

Reference numeral (72) in FIGS. 4 and 5 denotes an arcuate shutter plate that is rotatably provided along the outer circumference of the pay-out roll (15), and the boss (73) that supports the shutter plate is levered from the outside. By rotating the fertilizer with (74), it is possible to switch between the fertilizer feeding open state and the closed state in which the feeding is blocked. In addition, this shutter plate (72) is bent only on the shutter plate opening edge (72a) so that fertilizer powder is not caught between the shutter plate (72) and the outer peripheral surface of the feeding roller (15), so that the outer peripheral surface of the roller slides. ing.

Further, (75) in FIG. 5 is a measuring brush for slidingly contacting the outer peripheral surface of the feeding roller (15) to limit the inflow of fertilizer into the feeding recess (37), and this brush (75) is planted. The base (75a) is fitted into and supported by the brush holder (76) from the front side, and the back and forth of the holder is adjusted by a screw (77) to adjust the contact with the outer peripheral surface of the roller. The brush holder (76) itself swings inward and outward about the fulcrum (78), and can be switched and held between the working position shown in the figure and the fertilizer discharging position largely separated from the outer peripheral surface of the roller.

Also, (79) in FIG. 5 is a removable opening / closing cover, (8
0) and (80) are a pair of front and rear fertilizer outlets formed on the feeding funnel (17), and (81) is a flow path switching shutter. As shown in FIG. 7, the fertilizer feeding mechanism (16) for deep fertilization is as shown in FIG. , Connect the downflow hose (18) to the rear fertilizer outlet (80), and attach the cap (82) to the front fertilizer outlet (80),
The fertilizer feeding mechanism (16) for shallow fertilization is set in reverse. Then, when discharging the fertilizer remaining in the hopper (13), the brush holder (7
6) Swing backward, switch shutter (81), remove cap (82), and feed roll (1
5) is rotated. Further, (83) in FIG. 4 is a leakage net for removing fine fertilizer powder contained in the fed fertilizer, and (84) is a container for collecting the fine powder.

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]

Drawing shows an embodiment of a fertilizer application device for rice transplanters according to the present invention,
FIG. 1 is a side view of a planting part, FIG. 2 is a side view of a feeding roll driving structure, FIG. 3 is a rear view of a fertilizer application device, FIG. 4 is a vertical sectional front view of a fertilizer feeding mechanism, and FIG. FIG. 6 is a vertical sectional side view, FIG. 6 is a rear view of the brush holder, FIG. 7 is a side view showing the operating portion of the operating lever for adjusting the feeding amount, FIG. 8 is a rear view of the same, and FIG. 9 is a side view of the deep fertilizer applying mechanism. FIG. 10 is a cross-sectional plan view of a part thereof. (5) …… Seedling planting mechanism, (7) …… Rotating case,
(8) …… Plant nail, (15) …… Feeding roll, (23)…
… Intermediate shaft, (26a), (26b) …… Crank link mechanism,
(75) …… Brush.

Claims (1)

(57) [Claims] 1. A rice transplanter in which a seedling planting mechanism (5) having a pair of planting claws (8) at both ends of a rotating case (7) and a feeding roll (15) for fertilization are interlockingly connected. A fertilizer application device comprising the rotating case (7) and a feeding roll (15)
And the intermediate shaft (23) arranged in parallel with
By interlocking with a pair of crank link mechanisms (26a) and (26b), the intermediate shaft (23) is continuously rotated in a fixed direction in synchronization with the rotating case (7), and the intermediate shaft (23) And the feeding roll (15) are gear-interlocked to drive the feeding roll (15) in a direction opposite to the rotating case (7), and the intermediate shaft (23) is fed to the feeding roll (15). The fertilizer applicator for rice transplanters, which is arranged on the front side of the machine body and has a measuring brush (75) slidably contacting the rear side of the feeding roll (15).