JPH01137914A - Fertilizer applicator - Google Patents

Abstract

PURPOSE:To obtain a fertilizer applicator, provided with fertilizer application rolls for opening and closing by rotation of an input shaft and delivering a fertilizer in a tank in the vicinity of the ground surface of a field without a lag in timing for delivering the fertilizer in stopping and starting a rice transplanter and causing uneven fertilizer application. CONSTITUTION:An intermediate transmission shaft 85 in a planting transmission case 20 is linked to a crank 86 attached through a one-way clutch to an input shaft 68 on the fertilizer application side with a connecting rod 87 and an U-arm 88 to place fertilizer application rolls 67 at a height near the ground surface of a field. Thereby time lag required for dropping fertilizer in stopping and starting the rice transplanter can be reduced to eliminate uneven fertilizer application.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a fertilizer applicator.

(Prior Art) Conventional fertilizer applicators are designed to dispense fertilizer from a tank by opening and closing a fertilizer roll placed considerably above the field ground. (Problems to be Solved by the Invention) According to the above, because the distance between the fertilization roll and the field ground is long, the timing of dispensing fertilizer when the rice transplanter stops and starts is shifted, resulting in uneven fertilization.

(Means for Solving the Problems) Therefore, the technical problem of the present invention is to use a fertilizer applicator to ensure that the timing of dispensing fertilizer does not deviate when the rice transplanter stops and starts, and that the fertilizer is distributed evenly. The technical means of the present invention to solve this technical problem is to link the output shaft on the planting section side and the input shaft on the fertilizer applicator side, and open and close the fertilizing roll by rotation of the input shaft to open and close the fertilizer roll in the tank. This fertilizer application machine dispenses fertilizer, and is characterized in that the fertilizer application roll is disposed close to the field ground.

(Effect of the invention) According to this technical means, since the fertilizer is delivered close to the field ground, the time lag required for the fertilizer to fall when the rice transplanter stops and starts is extremely reduced, and uneven fertilization is eliminated. Ru.

Additionally, the overall position of the fertilizer applicator is lower, making it easier to maintain the seedlings by reaching from the rear of the rice transplanter to the lower end of the seedling cloak.

Another feature is that the seedling cloak presser can be released backwards.

(Example) The embodiments shown in the drawings will be described below.

First, I will explain the rice transplanter as a whole.

(1) shown in FIG. 13 is a passenger car body, and a planting part (3) is attached to the rear of this passenger car body (1) via a lift mechanism (2).
are concatenated. The passenger vehicle body (1) has a transmission case (5) attached to the rear of the vehicle body frame (4), and an engine (6) mounted on the vehicle body frame (4).
Below that is the front wheel (7).

Further, there are transmission cases (8) facing rearward from both left and right sides of the transmission case (5).

A rear wheel (9) is located at the rear end of the transmission case (8).

(10) is the driver's seat, (11) is the footrest, (12)
is the running handle.

A top link (14) and a lower link (15) are attached to the lift mechanism (2), and each link (14) (
15) to raise and lower the planting section (3).

In the figure, (16) shows a mounting bracket for the link of the hydraulic cylinder.

The link frame also attaches to the transmission case (8) with its mounting bracket.
installed on.

The planting section (3) consists of a seedling stand (18), a float (19), and a transmission case (20).

(21) is a marker, and (22) is a float lift lever.

The seedling planting device of the rice transplanter as described above, which has a rotary planting claw, is as follows.

That is, in FIG. 9, the input shaft (23) is rotatable with respect to the planting transmission case (20).

A sun gear (24) is loosely fitted onto the input shaft (23). However, it is fixed to the planting transmission case (20) via the sun gear phase adjustment member (25).

The sun gear phase adjustment member (25) changes the relative position of the sun gear (24) with respect to the planted transmission case (20).

A hollow two-split rotary case (28) is mounted on the end of the input shaft (23), and is fixed to the input shaft (23) by a pole (29).

The rotary case (28) has an intermediate gear (30
) (30) is rotatably provided via an intermediate shaft (31), and on a cam shaft (32) as a planting shaft,
A planetary gear (33) having the same number of teeth as the sun gear (24), which is always meshed with the intermediate gear (30) on the intermediate shaft (31), is fitted via a support member to be described later. These sun gear (24), intermediate gear (30), and planetary gear (33) are
As shown in FIG. 11, the gear is eccentric by an appropriate dimension (e) from the center of rotation.

The camshaft is also attached to the rotary case (28) via a position adjustment member (34).

Further, a support member (37) is fitted to the camshaft (32),
A planting arm (38) and the aforementioned planetary gear (33) are fixed to this support member (37).

By adjusting the position adjustment member (34), the extrusion timing of the extrusion claw (47) shown in FIG. 10 is changed.

(39) is a bolt that fixes the planting arm (38) to the support member (37), and is inserted into the bolt hole of the planting arm (38), and (40) is the bolt that fixes the planting arm (38) to the support member (37).
) is a bearing interposed between the

A cam (41) is provided on the camshaft (32), and a bushing arm (42) in contact with this cam drives a bushing rod (36) via an intermediate shaft (27), and a bushing rod (36) is driven at the intersection thereof. There is a spring (43) and in contrast there is a cushion rubber (44).

Therefore, the bushing arm (42) is attached to the spring (42).
3), and cushioned against the planting arm (38) by the cushion rubber (44).

The bushing arm (42) is also pivoted on a shaft (45),
The end contacts the cam (41).

(46) is a planting claw, and (47) is the aforementioned extrusion claw, which is pushed out by the bushing rod (36) driven by the bushing arm (42).

Now, when the rotary case (28) as a rotating body rotates in the direction of arrow A as shown in FIG. Intermediate gear (3) meshing with gear (24)
0) rotates in the direction of arrow B by the same rotation angle as the rotation angle of the rotary case (28).

A planting arm support member (37) interlocked with this intermediate gear (30) via a planetary gear (33) is connected to the intermediate gear (30).
Due to the rotation of the rotary case (2
Since it rotates in the opposite direction to the rotation direction of 8), the planting arm (
38) is the drive shaft (23) in a state facing the direction of the seedling stand.
), and during this turning movement, when descending from top to bottom on the side facing the seedling platform (18), the tip of the planting claw (46) will rotate around the seedling platform. (18)
After dividing only one seedling from the upper seedling mantle, it is planted in the field at the lower limit of its descent, after which it rises above the field, and the push-out claw (47) pushes out the seedling at the time of planting, so the seedling is Leave the planted nail (46).

By the way, as shown in FIG. 11, the sun gear 24, the intermediate gear (30), and the planetary gear (33) are all eccentric gears that are eccentric by an amount e, so the rotary case (28)
) rotates in the direction of arrow A, the support member (37) revolves, and the accompanying rotation of the support member (37) itself in the direction of arrow C causes the eccentric gears (24) (30) to rotate during one rotation.
, (30) and (33) are configured so that the rotation speed of the rotary case (28) becomes faster or slower depending on the difference in the engagement pinch radius with respect to the rotation axis in each engagement.

Therefore, the time when the rotation of the planting arm (38) in the C direction slows down relative to the rotation of the rotary case (28) is the time when the planting arm (38) descends from the seedling collecting position to approach the field surface. On the other hand, each planting arm (38) is set so as to correspond to the time when the planting arm (38) rises from the planting position so as to approach the upper limit of the rise of the planting arm (38).
As it approaches the field, it rotates slowly in the C direction, lagging behind the rotation of the rotary case (28) as it descends, changing its attitude downward by revolution, and after planting, it rises to approach the upper limit of its rise. When the rotary case (
28) It moves in the C direction a little faster than the rotation of the nail, rotates on its own, and changes its posture, so as shown in Figure 12, the closed loop of the motion trajectory of the claw tip is more curved on one side, and closer to a straight line on the other. It is a closed loop curve with an elliptical shape.

In addition, in the rice transplanter having the rotary planting claws as described above, the specific structure in which the planting arms are interlocked and connected to each other and driven by being connected to a rotary case with a planetary gear mechanism is as follows. As shown in FIG. 9, rotary cases (28) are provided on both sides of the transmission case (20), and the rotary cases (28) and the planting arm (38) corresponding to the first row G are connected in the manner described above. The planting arm (38) in row G and the planting arm (38) in row H are connected by connecting pipes (48) (49), and the planting arm (38) in row H and the planting arm (38) in row 1 are connected by connecting pipes (48) (49). 38) through connecting pipes (50) and (51).

In addition, one row of planting arms (38) and arm connecting members (54)
) is a support frame (57) that is connected by connecting pipes (52) (53) and has a support shaft (55) provided on the arm connecting member (54) corresponding to the sun gear (24) extending from the fuselage.
is supported via a bearing (58).

The camshaft (32) extends through and supports these connecting pipes. However, the camshaft (32) is attached to the arm connection member (54) via the position adjustment member (34), as in the rotary case on the planting transmission case (20) side.

Also, only the camshaft (32) may be fixed to the case using bolts (62) as shown in FIG. 9(b) to the member (54), and the pipes (52) and (53) is supported on the camshaft (32) via a bearing (63).

A conventional rice transplanter in which a fertilizing section is attached to the above-mentioned planting device is shown in FIG. 5, in which the same parts as in FIG. 13 are given the same reference numerals.

As shown in FIG. 7, the fertilization section (64) consists of a tank (65) and a shooter (66), and a fertilization roll (67) is located between the tank (65) and the shooter (66). The fertilizer roll (67) is an upper and lower roll (67a) with fan-shaped holes.
There is a perforated medium roll (67c) in the center of (67b), which is driven by a bevel gear with a shaft (68) and a shaft (77) of the bevel gear that meshes with the bevel gear.

As shown in FIG. 8, a driven cam (73) is attached to an arm (72) extending from the fertilization frame (71) via a shaft (74). The driven cam (73) is constantly urged downward by a spring (75') wound around the shaft (74).

A connecting rod (75) is stretched between the driven cam (73) and the eye hole (69) of the rotating plate (70), and the position of the connecting rod (75) with respect to the eye hole (69) is changed. By doing so, the stop position of the driven cam (73) can be changed, and thereby the opening/closing degree of the fertilizing roll (67) can be changed.
) is attached to the drive roller (76), and as the arm connecting member (54) rotates together with the rotary case (28), the drive roller (76) drives the driven cam (
73) and connect the rotating plate (75) via the connecting rod (75).
70), i.e. for moving the drive arm and opening the fertilizing roll (67) via the shaft (68).

A driving cam is used instead of the driving roller, and a rotary case is used instead of the arm connecting member.

Note that (78) in the figure is a surface presser rod, and (84) in Figure 6 is
) is a one-way clutch, (20) is a planted transmission case, and (19) is a float, similar to the one in Fig. 13.

According to the above, the fertilizer in the tank (65) is fed out eight times by opening and closing the fertilizer roll (67), which is arranged well above the rotary case (28).

In such metering, since the distance between the fertilization roll (67) and the field ground is long, the timing of dispensing fertilizer when the rice transplanter stops and starts is shifted, resulting in uneven fertilization.

The present invention is an improvement on this, and by arranging the fertilizing roll close to the field ground, the distance between the fertilizing roll and the field ground is extremely reduced, and the amount of time required for the fertilizer to fall when the rice transplanter stops and starts is reduced. This eliminates the time lag and eliminates uneven fertilization.

FIG. 1 shows a fertilizer applicator according to the present invention, in which the fertilizer roll (67) is disposed closer to the field ground than in the conventional one. ) A fertilization roll (67) is arranged at a height that overlaps with the rotation trajectory (28°) of (see Fig. 3 (a)).

The intermediate transmission shaft (85) in the planting transmission case (20) and the crank (86) attached to the fertilizer application side input shaft (68) via a one-way clutch are connected to the connecting rod (8
7) and U-arm (88), (89) (
90) (91) is its pivot point.

The connecting rod (87) is supported by a swing arm (92), and the swing angle of the connecting rod (87), which moves up and down as the intermediate transmission shaft (85) rotates, is regulated by the swing arm (92). . (93) (94) is its pivot point.

The pivot point (94) is connected to the short arm (95) and the long arm (96).
), and the short arm (95) is supported by a shaft (99) provided at the tip of a stay (98) extending from a frame (97) erected on the planting transmission case (20). The long arm (96) is pivotally supported (102) at the tip of a crank (101) fixed to the rotation shaft (100).

The rotation shaft (100) is rotatably supported by a stay (103) extending from the frame (97), and a lever is attached to the rotation shaft (100) at the side part of the fertilizer applicator (64). (104) is the installation (see Figure 4 (a)).

(105) is a guide for the lever (104);
It has a large number of recesses (105') for locking the locking protrusions (104') provided at (104) (see FIG. 3(b)).

Therefore, connecting rod (87), U arm (88)
When the crank (86) reciprocates through the one-way clutch and the shaft (68) intermittently rotates, it drives the bevel gear, causing the shaft (77) to intermittently rotate and rotate the intermediate gear (67c).
Rotate intermittently.

The upper fixed perforation plate (67a) has arc-shaped perforations (106) as shown in FIG. 2, and the lower fixed perforation plate (67b) has
Notches (107) and (108) are formed on the left and right sides.

Since the medium-sized container (67c) has many circular holes (109), the fertilizer that has fallen from the medium-sized container (106) can be removed from the notches (107) (108) by intermittent rotation of the medium-sized container (67c). It is designed so that it can be transported up to the point where it falls.

A lever (1) disposed on the side of the fertilizer applicator (64)
04) along the guide (105) to move the pivot point (94) and adjust the movement width of the connecting rod (87), the notch rotation width of the middle eye device (67c) changes. ,
The amount of fertilizer applied is regulated.

In the fertilizer application machine of the present invention configured as described above, since the fertilizer roll (67) is arranged at a height close to the field ground, there is a time lag required for the fertilizer to fall when the rice transplanter stops and starts. This will greatly reduce the amount of fertilizer applied, eliminating uneven fertilization.

In the example, the tank (65) of the fertilizer applicator was provided as close to the center of the fertilizer applicator (64) as possible to reduce the moment of inertia of the entire planting device.

Therefore, the fertilizer passage (65°) provided below the tank (65) was shaped to be offset from the central axis so as to wrap around the rotary case (28) (see Figure 3.4).

In addition, a conical discharge shoe (111) is formed between the fertilizing roll (67) and the groove-cutting part (110) to smooth the flow of the fertilizer.

That is, in the conventional fertilizer applicator, as shown in Fig. 7, the tank (65) and the groove-cutting section are communicated with each other by a chute (66) made of a flexible pipe, etc., and the chute is not clogged with fertilizer. Therefore, there is a large time lag for the fertilizer to fall on the field ground, and a shooter is required to ensure fertilizer application.
It was necessary to install a screw inside.

However, as in this embodiment, since the discharge chute (111) integrally molded into a conical shape is formed between the fertilizing roll (67) and the groove forming part (110), no special mechanism such as a screw is required. This has smoothed the flow of fertilizer and reduced the time lag required for the fertilizer to fall when the rice transplanter stops and starts, eliminating uneven fertilization. Additionally, since it is integrally molded, ease of maintenance such as cleaning has been improved.

It goes without saying that the fertilizer applicator of the present invention is not limited to the above-mentioned embodiments. For example, as shown in FIG. The unique effects of the present invention can also be achieved by placing the fertilization roll (67) close to the field ground.

[Brief explanation of the drawing]

Figure 1 (b) is a front view of the fertilizer applicator in different operating states, Figure 2 (b), (c), and (d) are exploded and assembled views of the perforated tray, and Figure 3 (a) is Side view of the fertilizer applicator according to the present invention, (b)
Figure 4 (a) is an enlarged view of the guide, Figure 4 (a) is a rear view of the fertilizer applicator according to the present invention, and Figure 4 (b) is an enlarged view of the guide.
5 is a diagram showing a modified embodiment of the fertilizing machine of the present invention, FIG. 6 is an overall view of the fertilizing rice transplanter, FIG. 7 is a partial view of the fertilizing part of the same as above, and FIG. 8 is a side view and a perspective view of the discharge chute. (A) (B) is a cross-sectional view of the tank, Figures 9 (A) and (B) are partial views of the fertilization section and drive section, and Figures 10 (A) and (B) are plan views of the unit type rotary rice transplanter. Fig. 11 is a partial view of the rotary case, Fig. 12 is an explanation of the function of the rotary case, Fig. 13 is a claw locus diagram of the rotary case, and Figs. 14 and 15 are a front view and a plan view of the rice transplanter. It is. (20) ... Planting transmission case (28) ... Rotary case (38) ... Planting arm (65) ... Tank (67) ... Fertilizer roll (68)...Input shaft on the fertilizer applicator side (85)...Rotary output shaft, so-called ＼￥Gap 22゛Figure 2＼()＼ノ VDOBUNOTI% /2 (c) (a) Figure 4

Claims (1)

[Claims] The output shaft on the planting section side and the input shaft on the fertilizer application machine side are linked,
A fertilizer applicator that opens and closes a fertilizer roll by rotation of the input shaft to dispense fertilizer in a tank, characterized in that the fertilizer roll is disposed close to the field ground.