JPH0763259B2 - Seedling planting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention is equipped with a belt-rotating type seedling feeding mechanism on the back side of a tilted posture seedling stand, and a mat-like seedling on the seedling stand is planted below. The present invention relates to a seedling planting device configured to send a predetermined amount to an attachment mechanism.

[Conventional technology]

In this type of seedling planting device, if the seedling feeding belt is in the operating position when replenishing mat seedlings to the seedling stand, the seedling feeding belt will slide while the supplementary seedlings slide down on the seedling placing surface. It may get caught in the protrusions of the machine and stop, and it may not be possible to feed it to a predetermined position.

Therefore, as disclosed in Japanese Utility Model Laid-Open No. 57-100833, a spring is interposed between the end of the arm that pivotally supports the tension roller and the seedling stand, and the upper part of the seedling feeding belt is inserted. The arm is elastically urged to sink from the seedling surface so that it will not get caught, and the end of the arm and the operating lever at hand are linked by a connecting tool such as a wire, and the arm moves upward when the lever is operated. It has been proposed that the seedling feeding belt is configured to be held in a working posture facing the seedling surface by moving and fixing.

[Problems to be Solved by the Invention]

However, in the conventional seedling feeding mechanism described above, when rattle or the like is generated in the connecting tool due to long-term use, when the seedling feeding belt is in the working posture, the stock removal from the seedling placing surface changes and the following occurs. Inconvenience may have occurred. For example, if a wire is used as a connecting tool and this wire extends, the amount of stock from the seedling feeding surface of the seedling feeding belt becomes smaller, and the protrusions and the like in the working posture of the seedling feeding belt become weaker, resulting in a mat-like shape. The feeding force to the planting mechanism below the seedlings was sometimes reduced.

The present invention focuses on such an actual situation, and an object thereof is to allow the stock removal from the seedling surface in the working posture of the seedling feeding belt to be constantly maintained regardless of rattling of the connecting tool. To do.

[Means for Solving the Problems]

The characteristic configuration of the present invention is to arrange a tension roller on the upper back side of the seedling stand in an inclined position, a drive roller on the lower back side, and wind a seedling feeding belt equipped with a protrusion for transportation on the outer surface. The upper path of the seedling feeding belt is made to face the seedling feeding surface of the seedling placing table, and the free end side of the arm that can be rocked around the horizontal axis above the tension roller is provided around the horizontal axis. An engaging portion having flexibility is provided to allow movement of the support shaft in the radial direction of the arc while restricting movement of the support shaft of the tension roller in the direction of the arc. A tension mechanism for slidably engaging and supporting the support shaft of the tension roller on the arm, and for urging the support shaft toward the side closer to the horizontal axis of the arm, is provided on the arm, and the rear side of the seedling stand of the arm is provided. Seed feeding bell by rocking By immersing the seedling feeding surface from the seedling feeding surface, by swinging the arm to the upper surface side of the seedling feeding base, the seedling feeding belt can be switched to an action posture facing the seedling placing surface, and, in the action posture of the seedling feeding belt, The support shaft of the tension roller, the shaft of the drive roller, and the horizontal axis of the arm are set so as to be aligned with each other in a side view, and the operation and effect thereof are as follows.

[Work]

The above features will be described based on the configuration shown in FIG.

A tension mechanism (12) provided on the arm (8) uses a support shaft (4a) of a tension roller (4) slidably supported on the free end side of the arm (8) as a horizontal axis of the arm (8). Energize to the side closer to the core (P), seedling feeding belt (6)
Gives tension to. The urging force of the tension mechanism (12) and the tension of the seedling feeding belt (6) are controlled by the shaft (5a) of the drive roller (5) and the support shaft (4) of the tension roller (4).
a) and the distance between the supporting shaft (4a) and the horizontal axis (P) of the arm (8) act to minimize the total,
The seedling feeding posture in which the support shaft (4a) of the tension roller (4), the shaft (5a) of the drive roller (5), and the horizontal axis (P) of the arm (8) are aligned in a side view is the most stable. Will be done. In short, the arm (8) is oscillated by the tensioning mechanism (12) toward the upper surface side of the seedling placing table, so that the seedling feeding belt (6) is elastically held in the acting posture facing the seedling placing surface (1a). When the seedling feeding belt (6) is to be immersed from the seedling surface (1a), the tension mechanism (1
The arm (8) is swung to the back side of the seedling surface against the biasing force of 2).

〔The invention's effect〕

In this way, by reasonably providing the tension mechanism for the seedling feeding belt, the seedling feeding belt can be stably held in the working posture even if there is rattling in the connecting tool, so that the allowance is kept constant. , It became possible to reliably send mat-shaped seedlings on the seedling surface.

Further, since the seedling feeding belt is constantly stretched by the tension mechanism, slip is unlikely to occur and seedling feeding is ensured. Moreover, since the tension mechanism for switching the working posture of the seedling feeding belt also serves to maintain the tension of the seedling feeding belt, it is advantageous in terms of simplification of the device.

〔Example〕

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

The seedling planting device, which is used by quickly arriving at the rear of the passenger aircraft, is the third
As shown in the figure.

The seedling planting device comprises a seedling stand (1) in an inclined posture capable of reciprocating lateral movement with a constant stroke, and a mat-like seedling (W) placed on the seedling stand (1) is attached to the rear part. The lower seedling planting mechanism (2) is used to sequentially cut out one plant and plant it on the ground.

A pair of left and right to send the mat-shaped seedlings (W) downward along the seedling-mounting surface (1a) at the stroke end where the cutting of one row of the lower end of the mat-shaped seedlings (W) is completed on the seedling-setting base (1). A seedling feeding mechanism (3) is provided for each row. The seedling feeding mechanism (3) had a large number of protrusions (6a) extending over the upper tension roller (4) and the lower drive roller (5) arranged on the back side of the seedling stand (1). The seedling feeding belt (6) is wound, and the upper path (6A) of the seedling feeding belt (6) is made to face the seedling placing surface (1a), and the seedling placing base (1) is at the stroke end. When reaching, the seedling feeding belt (6) is rotated by a certain amount.

The seedling feeding mechanism (3) will be described in detail. As shown in FIGS. 1 and 2, a plurality of stays (7) are fixed to the back side of the seedling stand (1) located above the tension roller (4) at predetermined intervals in the width direction. ), An arm (8) is swingably provided around a horizontal joint axis (P). Then, the free end portion of the arm (8) is regulated by the movement of the support shaft (4a) of the tension roller (4) in the direction along the circular arc around the horizontal axis (P) while controlling the movement of the circular arc. A downward release engaging groove (8b) is formed as an engaging portion having flexibility to allow movement of the support shaft (4a) in the radial direction, and a tension roller (8b) is formed in the engaging groove (8b). The support shaft (4a) of 4) is engaged so as to be vertically movable. Further, a rod (9) is provided slidably along the longitudinal direction of the arm (8), and the spring (10) mounted on the upper portion urges the rod (9) upward, and at the same time, the rod (9) The boss (11) fixed to the lower end of the shaft is fitted onto the support shaft (4a) so as to be rotatable relative to the support shaft (4a), and the tension mechanism (12) biases the support shaft (4a) toward the upper horizontal axis (P). ) Is configured. Further, a link (13) is fixed to the shaft (8a) of the arm (8), and the tip of this link (13) and an operation lever (14) provided on the upper part of the seedling stand (1) are connected to the wire (15). Through.

With the above structure, when the link (13) is swung by the pulling action of the wire (15) which is interlocked with the swing operation of the operation lever (14), the arm (8) swings to the rear surface side of the seedling stand and the seedling is fed. The upper part of the belt (6) is immersed from the seedling surface (1a) (see Fig. 2), and the link (13) is pushed by the pushing action of the wire (15) linked with the operation of the operation lever (14). When rocked, the arm (8) rocks to the upper surface of the seedling stand,
The seedling feeding belt (6) is in a working posture facing the seedling surface (1a) (see FIG. 1). When the mat seedling (W) is replenished to the seedling stand (1), the upper part of the seedling feeding belt (6) is immersed in the seedling placing surface (1a) in this way,
Make sure that the mat-shaped seedlings (W) dropped and supplied from the upper part of the seedling placing surface (1a) are not caught by the projections (6a) and stop. The swing range of the arm (8) is limited by the notch (7a) formed at the lower end of the stay (7).

The tension mechanism (12) applies tension to the seedling feeding belt (6) by urging the support shaft (4a) toward the horizontal axis (P) of the arm (8). Therefore, the support shaft (4a) has a minimum total distance between the shaft (8a) of the arm (8) and the support shaft (4a) and the distance between the support shaft (4a) and the shaft (5a) of the drive roller (5). To move to a position (1), that is, a straight line (L) connecting the axis (8a) of the arm (8) and the axis (5a) of the drive roller (5). In the seedling feeding mechanism (2) of the present invention, as shown in FIG. 1, the axis (8a) of the arm (8), the support shaft (4a) and the drive roller (in the working posture of the seedling feeding belt (6)). Since the axis (5a) of 5) is set so as to be located on a straight line (L) in a side view, the seedling feeding belt (6) is elastically held in the working posture. Therefore, even if the wire (15) is loosened due to long-term use, the stock removal from the seedling surface (1a) of the seedling feeding belt (6) is kept constant.

Although the wire (15) is linked to the operation lever (14) in the above example, it may be linked to the main clutch lever (16) and the planting clutch lever of the machine body (see FIG. 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]

Fig. 1 is a side view of the seedling feeding mechanism when the seedling feeding belt is in the working position, Fig. 2 is a side view of the seedling feeding mechanism when the seedling feeding belt is immersed from the seedling placing surface, and Fig. 3 is a seedling planting. FIG. 4 is a partial vertical side view of the attachment device, and FIG. 4 is an overall side view of the rice transplanter. (1) …… Seedling support, (1a) …… Seedling support, (4) ……
Tension roller, (4a) …… Protrusion, (5) …… Drive roller, (5a) …… Shaft, (6) …… Seedling feeding belt, (6A)
…… Upper path, (6a) …… Protrusion, (8) …… Arms,
(8b) …… engagement part, (12) …… tension mechanism, (P)
…… Horizontal axis, (L) …… Straight line.

Claims (1)

[Claims] 1. A tension roller (4) on the upper backside of a seedling stand (1) in an inclined posture, and a drive roller (5) on the lower backside.
Are placed respectively, and a seedling feeding belt (6) having a protrusion (6a) for transportation is wound on the outer surface of the seedling feeding belt (6), and the upper path (6A) of the seedling feeding belt (6) is attached to the seedling stand (1). On the free end side of the arm (8) that can be swung around the horizontal axis (P) above the tension roller (4) while facing the seedling placing surface (1a), the horizontal axis ( P) A flexibility that allows movement of the support shaft (4a) in the radial direction of the circular arc while restricting movement of the support shaft (4a) of the tension roller (4) in the direction along the circular arc. Is provided with an engaging portion (8b), and the supporting shaft (4a) of the tension roller (4) is slidably supported by the engaging portion (8b), and the supporting shaft (4a) is supported. The arm (8) is provided with a tension mechanism (12) for urging the arm (8) toward the side closer to the horizontal axis (P). The seedling feeding belt (6) is immersed from the seedling placing surface (1a) by swinging to the back side of the seedling placing table, and the arm (8) swings toward the upper side of the seedling placing table to set the seedling feeding belt (6). It is configured such that it can be switched to an action posture facing the placing surface (1a), and in the action posture of the seedling feeding belt (6), the spindle (4a) of the tension roller (4) and the shaft of the drive roller (5). The seedling planting device in which (5a) and the horizontal axis (P) of the arm (8) are set so as to be located on a straight line (L) in a side view.