JPH0697920B2 - Seeder leveling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a rotary brush for leveling the surface of the bed soil of a nursery box which is transported in a certain direction on a carrier, and is positioned above the nursery box. The present invention relates to a leveling device for a seeding machine provided in.

[Conventional technology]

Generally, in a sowing machine, a rotating brush is arranged above the nursery box transported on the carrier so as to be in contact with the soil of the nursery box so that the surface of the soil can be leveled. Was there.

However, since the surface of the bed soil of the nursery box is usually lower than the height of the edge of the nursery box, when the rotating brush passes the edge of the nursery box, the bed soil near the edge rises in an arc shape. So, if you sow in this state,
On the raised floor soil, the seeds will fall down and it will be difficult to sow on the floor soil at the front and rear ends of the nursery box transporting, and the seeds that have fallen down will be collected in the vicinity of the bottom of the raised floor soil. Become.

Therefore, if seedlings raised in this state are planted as mat-like seedlings with a rice transplanter, the planting in the raised soil will be missed, and an excess number of seedlings will be planted before and after that. It is not preferable because it causes a trouble in the attachment work.

Therefore, it is possible to eliminate the above-mentioned inconvenience by flattening the raised portions at the upper side edge and the lower side edge of the nursery box in the conveying direction, but as a technique therefor, JP-A-61-149025 and JP-A-6149025. -149027 discloses one.

[Problems to be Solved by the Invention]

The former conventional technique equalizes the upper hand side end of the nursery box, and the latter conventional technique equalizes the lower hand side end of the nursery box in the transfer direction. Will use both of these means.

However, it is uneconomical to provide these two independent leveling devices, and it is difficult to realize in terms of arrangement space and cost, and leveling the upper and lower ends at the same level. In order to achieve this, both leveling devices must be accurately adjusted in level, and the level adjustment with each rotating brush must also be performed, which is difficult to achieve, and there is room for further improvement. .

The present invention realizes, with a single device, one capable of leveling over the entire floor soil by eliminating the rise of the floor soil at the transporting side edge of the nursery box and the side edge of the lower side, and is of high practical value. The purpose is to obtain a leveling device.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention provides a leveling device for a seeder described at the beginning, which is provided with a floor soil shaving edge projecting toward the upper side in the transport direction and a horizontal soil crushing plane. A first urging mechanism that supports the corner leveling tool so as to be movable up and down with respect to a support member provided on the carrier side, and urges the corner leveling tool down to a set height with respect to the support member. The support member is supported on the carrier base side through a tilt guide mechanism so as to be movable back and forth along a tilt direction that is higher toward the lower side in the transport direction, and the support member is limited to the upper limit of transport. A second urging mechanism for urging and moving the first urging mechanism toward the support member so that the downward urging force of the urging force applied to the support member by the second urging mechanism is larger than the downward urging force of the first urging mechanism. With both of the above-mentioned urging mechanisms set Is.

Further, a brush height adjusting mechanism capable of adjusting the set height of the rotating brush and a support member height adjusting mechanism capable of adjusting the set height of the supporting member of the leveling device are provided, and the brush height adjusting mechanism is operated. Accordingly, the support member height adjusting mechanism may be linked so as to be interlocked.

[Action]

The operation of the characteristic structure will be described with reference to FIG. 3 in the case where the nursery box passes through the leveling device.

First, the edge (5) of the corner leveling tool (7) is brought into contact with the outer side surface on the transport lower side of the transported seedling raising box (1) and pushed by the seedling raising box (1) to turn the corner leveling tool (7). ) Resists the urging force of the second urging mechanism (11) together with the supporting member (8) and acts forward of the inclined guide mechanism (10) (advanced side of conveyance).
It moves upward (see FIG. 3 (a)).

Then, as the conveyance progresses, the corner leveling tool (7) finally rides on the edge upper surface of the seedling raising box (1), and the second biasing mechanism (11).
The corner leveling tool (7) is maintained at a constant height position where the floor soil suppression plane (6) abuts the upper surface of the edge by the biasing force of. Even in this state, the urging force of the second urging mechanism (11) exerts a pulling force on the support member (8) toward the upper side in the transport direction, but the second urging mechanism ( 1
Since the downward component force of 1) is stronger than the force of pushing up the support member (8) by the first biasing mechanism (9), the corner leveling tool (7) is placed on the upper edge of the nursery box (1). While riding, the first biasing mechanism (9) is compressed (see FIG. 3B).

Therefore, as soon as the edge upper surface of the nursery box (1) is separated from the floor soil suppression plane (6) to the transport lower side from the above state, the floor soil suppression plane (6) is stored in the first urging mechanism (9). Due to the descending biasing force, the rising of the soil on the lower side of the raising of the nursery box (1) can be instantaneously suppressed and leveled (see FIG. 3C).

Then, the corner leveling tool (7) (third part) returned to the original state.
(See (d) and (e)), when the soil on the hand side of the nursery box (1) is raised, the edge (5) scrapes off the soil to level the soil. (See FIG. 3 (f)) When this edge (5) abuts the inner surface of the nursery box (1) on the transport side, the corner leveling tool (7) removes the ground soil scraped off by the edge (5). While being held, the edge (5) is moved forward and upward as in the case where the edge (5) comes into contact with the outer side surface on the lower transport side.

Then, the corner leveling tool (7) rides on the upper edge of the edge again, and when the nursery box (1) passes, the corner leveling tool (7) descends, but the ground soil scraped off during this period is placed outside the nursery box (1). When the seedling raising box (1) is continuously conveyed, the leveling device (4) repeats the above operation. is there.

As is apparent from the above description of the operation, the raised bed soil at the end on the good hand side of the nursery box (1) for transportation is mainly provided by the function of the second biasing mechanism (11) and the tilt guide mechanism (10). 2 urging mechanism (11), inclination guide mechanism (10), and 1st urging mechanism (9)
With the function of and, the raised soil at the lower end of the transporting side of the nursery box (1) is leveled and leveled, respectively, and the single leveling device (4) is used to cover the entire nursery box (1). Leveling is now possible.

Further, according to the characteristic configuration, in addition to the above operation, if the rotating brush height adjusting mechanism is operated to set the surface height level of the floor soil, the supporting member height adjusting mechanism is also automatically operated. .

[Effect of device]

Therefore, in the leveling device of claim 1, it is possible to level the rising bed soil at both ends of the conveying lower side end and the upper side end of the nursery box,
The whole soil surface in the nursery box can be well treated so that the subsequent seeding process can be performed uniformly. Moreover, since the rising soil at both ends can be leveled with a single device, it can be provided as an economical and rational one that can be made compact and the cost can be reduced. As a result, it is not necessary to perform the troublesome work such as matching the levels of the two devices as described above, and the maintenance work only needs to be performed for one leveling device, which is advantageous in terms of workability.

In addition to the above effects, the leveling device of claim 2 does not require the work of adjusting the height of the leveling device in order to adjust the height of the surface of the flooring soil. Work is very convenient,
And now it's easy to do.

〔Example〕

FIG. 4 shows the overall configuration of the seeder. This seeding machine has various types of soil filling, irrigation, sowing, soil covering, etc. above the carrier table (2) on which the seedling raising box (1) is placed and transferred, from the side in the carrier direction of the carrier table (2). Supply device (A),
It is configured by installing (B), (C), and (D).

As shown in FIG. 1 and FIG. 2, the soil filling device (A) is provided for leveling the surface of the bed soil of the nursery box (1) transported in a fixed direction on the transport base (2). The rotary brush (3) is provided at a position above the nursery box (1), and ridges are formed on an arc for leveling by the rotary brush (3). A leveling device (4) for leveling the soil ends of both floors is provided.

This leveling device (4) is configured as follows. That is, a corner leveling tool (7) provided with an edge (5) for removing floor soil protruding toward the upper side in the transport direction and a flat surface soil compacting plane (6) is installed on the transport platform (2). Base plates (12), (12) provided on the left and right sides of the soil filling device (A)
It is supported so as to be movable up and down with respect to a support member (8) provided over the entire length.

A compression spring (9) is provided as a first urging mechanism for urging the corner leveling tool (7) downwardly to a set height with respect to the support member (8), and the support member (8) is moved to the lower side in the transport direction. It is supported by the base plates (12) and (12) via the tilt guide mechanism (10) so that it can be moved back and forth along the tilt direction, and the support member (8) is attached toward the movement limit on the hand side of conveyance. The base plate (12) is provided with a tension spring (11) as a second urging mechanism for urging.

Then, the component force generated by the tension spring (11) pulling the support member (8) toward the upper hand side of conveyance, that is, the downward biasing force that presses the support member (8) downward is the compression reaction force of the compression spring (9). Force to separate the support member (8) from the corner leveling tool (7) by the support member (8)
When viewed as a reference, the strength of both springs (9) and (11) and the inclination guide mechanism (10) are greater than the downward biasing force that pushes the corner leveling tool (7) downward.
The inclination angle and the like are set.

The corner leveling tool (7) has the shaft (14) installed upright,
The support member (8) can be vertically moved by being fitted in the cylinder (15), and the compression spring (9) is mounted so as to surround the cylinder (15). A pin that engages with the tube (15) is mounted on the upper end of the shaft (14) to prevent the corner leveling tool (7) biased downward from coming off.

The tilt guide mechanism (10) is configured by inserting the stepped end of the support member (8) into a long hole (13) formed in the base plate (12), which becomes higher toward the lower transfer side. The support member (8) and the corner leveling tool (7) are slidable in the front-back direction diagonally.

In addition, as shown in FIG. 1, the brush height adjusting mechanism (16) capable of adjusting the set height of the rotating brush (3) and the set height of the support member (8) of the leveling device (4) are set. A support member height adjusting mechanism (17) that can be adjusted is provided, and a parallel four-sided link mechanism (1) is provided so that the support member height adjusting mechanism (17) is also operated in conjunction with the operation of the brush height adjusting mechanism (16).
It is linked in 8).

That is, the roller (1
The leveling device (4) is vertically movably attached to the soil filling device (A) by fitting the 9) into the vertical rail (20) provided in the soil filling device (A) and having a substantially U-shape in plan view. At the same time, by engaging the tip of a leveling arm (21), which is rotatable around a pivot (P ₁ ) provided in the soil filling device (A), with an elongated hole (23) of the base plate (12). The support member height adjusting mechanism (17) is configured, and the leveling arm (21) and the pivot point (P ₂ ) provided on the soil filling device (A) are rotatable around and rotatable at the tip. A parallel four-sided link mechanism (18) is configured by pivotally connecting a brush arm (22), which is a rotating brush height adjusting mechanism (17) equipped with the brush (3), with a joint (24).

Further, the brush arm (22) can be rocked by the operation lever (25) and its position can be maintained.

Therefore, if the spans (l ₁ ) and (l ₂ ) of the leveling arm (21) and the brush arm (22) are equalized, the corner leveling tool (7) and the rotating brush ( 3) exhibits the same amount of vertical movement.

In the nursery box (1) shown in FIG. 3, (26) is the floor soil pile on the lower side of transportation, (27) is the floor soil pile on the lower side of transportation, and FIGS. It shows a leveling action state of a series of floor soil by the flattening device (4).

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]

The drawings show an example of a leveling device for a seeder according to the present invention,
FIG. 1 is a side view of a main part, FIG. 2 is a plan view of the main part, FIGS. 3 (a) to (g) are side views of the main part showing a series of operations, and FIG. 4 is a side view of the whole seeder. is there. (1) …… Raising seedling box, (2) …… Conveyor stand, (3) …… Rotating brush, (5) …… Edge, (6) …… Soil repressing plane,
(7) …… Corner leveling tool, (8) …… Supporting member,
(9) …… First biasing mechanism, (10) …… Inclination guide mechanism,
(11) …… Second urging mechanism, (16) …… Brush height adjustment mechanism, (17) …… Supporting member height adjustment mechanism.

Claims (2)

[Claims] 1. A rotating brush (3) for leveling the surface of the soil of a nursery box (1) transported in a fixed direction on a carrier (2) is located above the nursery box (1). A leveling device for a seeding machine, which is provided in a corner, which comprises an edge (5) for removing soil from the floor projecting to the upper side in the transport direction, and a flat soil suppressing plane (6) in a horizontal plane. (7) is supported so as to be vertically movable with respect to a support member (8) provided on the side of the carrier (2), and the corner leveling tool (7) is set with respect to the support member (8). A first urging mechanism (9) for urging downwards to a height is provided, and the support member (8) can be moved back and forth along an inclination direction that is higher toward the lower side in the transport direction via an inclination guide mechanism (10). While supporting the support member (8) on the side of the transfer table (2), and biasing the support member (8) toward the limit of movement on the transfer side. Second urging mechanism (11) provided for,
The two urging forces are applied so that the downward force component of the urging force applied to the support member (8) by the second urging mechanism (11) is greater than the downward urging force of the first urging mechanism (9). A leveling device for a seeder having the mechanisms (9) and (11) set. 2. A brush height adjusting mechanism (16) capable of adjusting a set height of a rotating brush (3) and a support member height adjusting mechanism capable of adjusting a set height of a supporting member (8) of a leveling device. (17) is provided, and the brush height adjusting mechanism (1
The leveling device for a seeder according to claim 1, wherein the support member height adjusting mechanism (17) is linked so as to be interlocked with the operation in 6).