JP2504607Y2 - Deep fertilization mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a mechanism for performing deep fertilization at the same time as rice planting work in a paddy field.

[Conventional technology]

As the deep fertilization mechanism, for example, as disclosed in Japanese Patent Application Laid-Open No. 2-23807, an embedded disk that is driven and rotated around the horizontal axis by plunging the lower half into the rice field, and a granular powder fed from the hopper. And a fertilizer feeding mechanism for supplying the fertilizer to the recess formed on the outer periphery of the embedding disc, and a transmission case in which the embedding disc is supported at the tip is configured to be vertically swingable about the base end thereof. There is.

[Problems to be solved by the device]

In the above publication, the lower end of the downflow hose derived from the fertilizer feeding mechanism is directly provided at the fertilizer supply position above the embedding disk. The fertilizer that has come out is guided by a cylindrical fertilizer guide that is arranged close to the outer peripheral surface of the embedded disk, and is supplied to the concave portion of the outer peripheral surface of the disk.

However, the introduction of this fertilizer guide eliminated the leakage of fertilizer to the outside, but on the other hand, the fertilizer guide was apt to become clogged with fertilizer, and the guide had to be cleaned each time. .

The present invention has been made in view of such an actual situation, and an object thereof is to avoid the clogging of the fertilizer caused by the introduction of the fertilizer guide and to enable efficient continuous work.

[Means for solving the problem]

In order to achieve the above-mentioned object, the present invention provides a fertilizer feed position of the embedding disc with a cylindrical fertilizer guide for guiding fertilizer from the feeding mechanism to the recess, and clogging the fertilizer guide. A preventive tool is swingably provided, and the clogging preventive tool is interlockingly connected to the rotary shaft at the base end of the transmission case.

[Action]

According to the above-mentioned configuration of the present invention, the clogging preventive tool in the fertilizer guide is oscillated and driven during the fertilizing operation to prevent the fertilizer from accumulating and depositing in the guide.

Even if the transmission case is adjusted up and down to adjust the fertilization depth, the clogging prevention device works well because the swing center of the transmission case and the drive center of the clogging prevention device are on the same rotation axis. To do.

[Effect of device]

As described above, the deep fertilizer application mechanism of the present invention can prevent the fertilizer from leaking to the outside at the fertilizer supply position to the embedding disk by introducing the fertilizer guide, and can prevent the fertilizer from clogging in the guide. , It became possible to perform efficient continuous work without interrupting work for clearing clogging.

〔Example〕

 Hereinafter, embodiments of the present invention will be described 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) comprises 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 part of each planting case (4), and a ground leveling float (6), etc. Comprised of seedling planting mechanism (5)
Is a case in which claw cases (9) with planting claws (8) are attached to both ends of a rotating case (7) that rotates forward at a constant speed around the horizontal axis (P) so that the posture can be changed. Composed,
The planting is performed twice by one rotation of the rotating case (7).

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 linked to the left and right seedling planting mechanisms (5) via crank link mechanisms (26a) and (26b), respectively.

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), driven arms (27a) and (27b), and push and pull loads (29a) and (29b) that pivotally connect the drive arms (28a) and (28b), respectively, and The rotation phases of both crank link mechanisms (26a) and (26b) are set to 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) will be described with reference to FIGS. 4 and 5.

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 FIG. 4, (43) is a mud scraper on the side surface of the disc attached to the stay (42), (44) is a mud scraper on the outer peripheral surface of the disc, and (41a) is the gap (S). This is a scraper for discharging fertilizer, which is attached to the inner surface of the guide (41) at the rear.

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).

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 FIG. 6, the pay-out roll (15) has a roll main body (15a) externally fitted to the pay-out shaft (22) consisting of a hexagonal shaft so that torque can be transmitted, and can be slide-adjusted relative to the roll main body (15a). The movable roll part (15b) and the movable roll part (15b) are slidably adjusted, so that the roll body (1
The width of the fertilizer feeding concave portion (56) formed between the movable roll portion (15a) and the movable roll portion (15b) in the axial direction is changed.

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).
Moderate resistance is given to the relative rotation of 8).

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. 9 and 10, the operation shaft (6) is attached to the bracket (62) which penetrates and supports one end of the operation 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. 6 is a pointer fixed to the feeding shaft (22), and a main scale formed on the outer circumference of the adjusting sleeve (57) at a constant pitch in the axial direction is provided on the outer end of the movable roll portion (15b). It is possible to read by the edge and read the auxiliary minor scale in the circumferential direction attached to the outer end surface of the gear (58) with the pointer (71). Confirm the axial position of the roller part (15b), that is, the feeding amount accurately. You can do it.

Reference numeral (72) in FIG. 6 denotes an arcuate shutter plate that is rotatably provided along the outer circumference of the pay-out roll (15), and a boss (73) that supports the shutter plate is externally attached to the lever (7).
By rotating by 4), it is possible to switch between the fertilizer feeding open state and the closed state that prevents feeding. In addition, this shutter plate (72) prevents fertilizer powder from being caught between the outer peripheral surface of the feeding roller (15),
Only the shutter plate opening edge (72a) is bent and slidably contacts the outer peripheral surface of the roller.

Further, (75) in FIG. 7 is a measuring brush that slidably contacts 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 moved forward and backward by the brush holder (76) to adjust the contact with the outer peripheral surface of the roller. And the brush holder (76) itself is the fulcrum (78)
By swinging inward and outward around the center, it is possible to switch and hold between the illustrated operating position and the fertilizer discharging position that is largely separated from the outer peripheral surface of the roller.

Further, (79) in FIG. 7 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. 6 is a leakage net for removing the fertilizer fine 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 of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of the deep-layer fertilization mechanism according to the present invention.
The figure is a side view of the planting part, Fig. 2 is a side view of the feeding roll drive structure, Fig. 3 is a rear view of the fertilizer applicator, Fig. 4 is a side view of the deep fertilizer application mechanism, and Fig. 5 is a partial cross section thereof. A plan view, FIG. 6 is a vertical sectional front view of the fertilizer feeding mechanism, FIG. 7 is a vertical sectional side view thereof, FIG. 8 is a rear view of the brush holder, and FIG. 9 shows an operating portion of an operating lever for adjusting the feeding amount. A side view and FIG. 10 are rear views. (13) …… Hopper, (16) …… Fertilizer feeding mechanism, (21)
…… Embedded disc, (32) …… Rotary shaft, (37) …… Concave, (45) …… Fertilizer guide, (48) …… Clogging prevention tool.

Claims (1)

(57) [Scope of utility model registration request] 1. An embedding disk (21) which is driven and rotated about a horizontal axis centering a lower half portion into a paddy field, and a powdery and granular fertilizer fed from a hopper (13). The embedding disc (21) is provided with a fertilizer feeding mechanism (16) for supplying to a recess (37) formed on the outer periphery.
A deep-layer fertilization mechanism in which a transmission case (35) supported at the tip is configured to be vertically swingable about the base end thereof, and the feeding mechanism (35) is provided at the fertilizer supply position of the embedding disc (21). A cylindrical fertilizer guide (45) for guiding fertilizer from the 16) to the recess (37) is arranged, and a clogging preventive tool (48) is swingably provided in the fertilizer guide (45). This clogging prevention device (48) is provided with the transmission case (35).
Deep fertilization mechanism that is interlockingly connected to the base end rotary shaft (32).