JPH0824464B2 - Pre-seedling storage structure for rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] According to the present invention, a preliminary seedling accommodation device is arranged above a seedling placing table in an inclined posture, and the preliminary seedling accommodation device holds and holds the preliminary seedlings. The seedling placement position and the seedling feeding position for slidingly feeding the preliminary seedling onto the seedling placing table with one end approaching the seedling placing table are configured to be swingable, and the lower surface of the preliminary seedling accommodation device. The present invention relates to a spare seedling accommodation structure for a rice transplanter in which a seedling holding stay for preventing floating of the seedlings placed on the seedling placing table is attached to the side when the spare seedling accommodation device is in the seedling placing position.

[Prior Art] In the above-mentioned preliminary seedling accommodation structure, there is a structure of which the applicant previously applied (Japanese Patent Application No. 63-286299). That is, the seedling holding stay is fixedly attached to the preliminary seedling accommodation device.

[Problems to be Solved by the Invention]

The seedling holding stay is caused by the vibration of the machine during seedling planting or a slide impact when replenishing a new seedling when the number of seedlings left on the seedling mounting table is low, so that the weight of seedlings is This is to prevent bulging of the middle part and curling up of the end part, and to prevent a stock stall.

However, according to the above-mentioned conventional structure, when the preliminary seedling accommodation device swings toward the seedling mounting table side during the supply of the preliminary seedlings, the seedling holding stay is mounted in a fixed state. With the switching swing of the seedling accommodation device, an unreasonable force is applied to the attachment portion of the seedling holding stay, and there is a defect that durability is lacked, and the seedling holding position is always constant,
There was also a problem that the height could not be adjusted according to the difference in seedling type.

An object of the present invention is to eliminate the above-mentioned inconveniences by improving a rational structure.

[Means for solving the problem]

The characteristic configuration of the present invention is, in the preliminary seedling accommodation structure of the rice transplanter described at the beginning, the preliminary seedling accommodation in a state in which the seedling holding stay can be urged by swinging toward the seedling table side and retracted upward. In addition to pivotally supporting the device, the seedling holding stay is brought into contact with a preliminary seedling holding device to regulate the swinging from the predetermined seedling holding position to the seedling platform side and change the contact regulating position. It is equipped with an adjustable contact screw type position adjustment mechanism.

[Action]

Since the seedling holding stay is held at a predetermined seedling holding position and is swingably biased in the seedling holding direction, a proper seedling holding force can always be maintained and the preliminary seedling holding device is placed in the seedling feeding position. When the switching rocking is performed, relative rocking backward is performed upward, and the supply operation of the preliminary seedlings is not hindered. Moreover,
The contact screw type position adjustment mechanism makes it possible to finely adjust the seedling holding position infinitely.

〔The invention's effect〕

Therefore, according to the present invention, while maintaining an appropriate seedling holding function, an excessive force is not applied to the mounting portion of the seedling holding stay during the switching swing of the preliminary seedling holding device, and it can be used for a long period of time. Also, the risk of damage is reduced and durability is improved. In addition, the action position can be adjusted with a simple structure, and the action position can be readjusted by a simple operation due to the difference in seedling type or the secular change of the urging force.

〔Example〕

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

FIG. 10 shows a riding-type rice transplanter according to the present invention. This rice transplanter is configured by connecting a seedling planting device (2) to a rear portion of a riding type traveling machine body through a link mechanism (1) which can be driven up and down.

As shown in FIG. 1, the seedling planting device (2) comprises a seedling stand (3) in a backward descending posture, and a planting mechanism (4) arranged below and rearward of the seedling stand (3). And a grounding float (5) and the like, and the seedling table (3) is attached to the planted transmission case (6) also serving as a frame so as to be reciprocally driven left and right with a constant stroke. At the bottom of the plant, there is a protrusion that locks onto the placed seedling to prevent it from sliding down and holds the position when the seedling placing table (3) moves laterally, and at the end of the stroke, extends downward by an amount equivalent to one planting amount. An endless belt type vertical feed mechanism (7) is provided.

The planting mechanism (4) mounts a rotating case (8) that rotates around a horizontal axis on the rear part of the planting transmission case (6) and mounts it while drawing an elliptical locus on both ends of the case (8). A planting claw (9) for cutting out and planting seedlings from the lower end of the planting seedling is attached, and a fertilizer application device (10) is provided above the planting mechanism (4).

A preliminary seedling accommodation device (11) is provided above the seedling placing table (3), and the preliminary seedling accommodation device (11) is located above and has a posture substantially parallel to the seedling placing table (3). The seedling placing position for holding and holding the seedling and the seedling supplying position where the rear end contacts the seedling placing table (3) are configured to be switchable and swingable. That is,
The preliminary seedling accommodation device (11) is swingably supported around a horizontal axis (X ₁ ) in the upper front part, and the preliminary seedling accommodation device (11) is also supported.
Locking mechanism (A) that locks and holds the seedlings on the rear lower end, and releases the locking state to drop the preliminary seedling accommodation device (11) to the seedling supplying state by its own weight. Is provided.

More specifically, as shown in FIG. 1 to FIG. 8, a side wall (13) is provided over a long area in the vertical direction above the partition part (12) between the rows of the seedling placing table (3). In addition to standing and fixing, the swinging pivotally supporting part (17) of the preliminary seedling accommodation device (11) is provided on the side wall (13) above the seedling placing table (3), and Side walls on both sides (13), (13)
The rocking pivots (17) and (17) in (1) are configured to stably rock and support. On the other hand, a support frame (18) extending laterally over the entire width is fixedly provided on the lower side edge of the seedling mounting table (3) in the side wall (13), and each side wall of the support frame (18) is fixed. An electromagnetic solenoid (14) is attached and fixed in the middle of (13) via a bracket (19). The bracket (19) includes a spare seedling storage device (11).
A swingable locking member (15) is pivotally supported at a position where the free end side of the plate is placed and locked and a position where the free end side is rocked to release the engaged state. And, the locking member (15) has one end side,
The actuator (14a) of the electromagnetic solenoid (14) projecting sideways is locked and maintained at the locking position, and the actuator (14a) is retracted to cause the weight of the preliminary seedling accommodation device (11) to cause It is configured to be in the release position. The locking member (15) and the electromagnetic solenoid (14) constitute the locking mechanism (A).

The inside of the case on the upper surface of the pivotal support of the locking member (15) receives the mud flowing from the preliminary seedling side through the locking portion and prevents it from entering toward the electromagnetic solenoid (14). A shelf (15a) for forming is formed. This shelf (15a)
The mud accumulated above is designed to flow downward when switching to the seedling supply position. Further, as shown in FIG. 9, a diaphragm-type seal member (14c) is provided between the actuator (14a) of the electromagnetic solenoid (14) and the case portion (14b) to interpose the electromagnetic solenoid (14). The invasion of muddy water is prevented.

The seedling placing table (3) projects upward from the seedling placing surface (3a) of the seedling placing table (3) at the center of the seedling placing mechanism (7) in the lateral direction and at the center position in the vertical feeding direction. A seedling remaining amount sensor (16) is provided which can be switched between a non-detection state and a detection state in which the seedling placement surface (3a) retracts depending on the weight of the seedling. When the remaining seedlings on the seedling placing table (3) are running low and the seedling remaining amount sensor (16) is in a non-detection state,
By operating the electromagnetic solenoid (14), the spare seedling accommodation device (11) is linked by its own weight to switch from the seedling mounting position to the seedling supplying position.

Position fixing means is provided near the swinging fulcrum so that the preliminary seedling accommodation device (11) can be held and released at the seedling placement position by operating the operation lever (27). More specifically, on the inner side surface of the side wall (13), a substantially doglegged operating lever (2) that can be rocked around a lateral axis (X ₂ ).
(7) is pivotally supported, and an engaging protrusion ((7) pivotally engages with the lower swing side of the support frame (21) of the preliminary seedling accommodation device (11) at the rear swing end of the operating lever (27). 28) has been formed. When the operation lever (27) is swung toward the front side from the state where the support frame (21) is at the seedling supply position, the engagement protrusion (28) is abuttingly engaged with the support frame (21). 21) is oscillated upward, and the line connecting the engaging projection (28) and the swing axis (X ₂ ) is orthogonal to the lower surface of the support frame (21), that is, the dead point (DP). When it exceeds, the support frame (21) can be held at the seedling placement position even if the operator releases his / her hand from the operation lever (27). Thus, the fixing means is constituted by the dead point crossing mechanism.

With this configuration, when a new seedling is replenished with some seedlings remaining on the seedling storage device (11) at the seedling supply position, the device (11) is pulled out backward and upward. Can be smoothly transferred to the seedling mounting table (3).
When setting the seedling placement position again, after operating the operation lever (27) to hold the support frame (21) at the seedling placement position, the spare seedling storage device (11) is set to the normal position. The operating lever (27) may be slid to the release position while being locked by the locking mechanism (A). Then, the seedling automatic supply state can be set by the operation of the electromagnetic solenoid (14).

The preliminary seedling accommodation device (11), as shown in FIG.
Seedling placing plate (11a) and side wall forming members (11b) on both left and right sides,
(11b) are connected to a supporting frame (21) that is swingably attached to the swinging pivotally supporting portion (17) around a horizontal axis (X ₁ ),
The preliminary seedling accommodation device (11) is placed and supported and is slidably engaged and held only in the direction along the seedling placing table (3). The locking member (22) attached to the lower surface of the upper end of the preliminary seedling accommodation device (11) contacts the upper end of the support frame (21) and holds the position at a predetermined set position, and is directed rearward and upward. The spare seedling storage device (11) can be pulled out.

In addition, on the lower surface side of the preliminary seedling accommodation device (11), in a state where the preliminary seedling accommodation device (11) is in the seedling placing position, a seedling retainer for preventing floating of the placed seedling on the seedling placing table (3). A stay (23) is attached. More specifically, a pair of left and right seedling pressing stays (23) are supported by rotatably supporting a support shaft (23a) over the upper side portions of the side wall forming members (11b), (11b).
Is swingably attached around the axis of the support shaft (23a). The upper side of the support shaft (23a) of the seedling holding stay (23) is formed in a state of being close to the seedling placing plate (11a), and the lower side is close to the seedling placing base (3) to perform a seedling holding action. It is configured as follows. Further, a contact regulating mechanism (B) is provided as a position adjusting function for swinging and biasing in the seedling pressing direction by the spiral spring (24) and for holding the position in a predetermined seedling pressing posture.
That is, the wing bolts (26) are attached to the left and right central portions of the connecting rod (23b) that connects the upper ends of the left and right seedling pressing stays (23) so that the wing bolts (26) can be screwed and adjusted. The contact restriction mechanism (B) is configured so as to contact the stop member (22) and restrict the contact position against the spring force of the spiral spring (24).

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 embodiment of a preliminary seedling accommodation structure for a rice transplanter according to the present invention. Fig. 1 is a cutaway side view of a rear portion of the rice transplanter in a seedling placement position, and Fig. 2 is a rear portion of the rice transplanter in a seedling supply position. Fig. 3 is a side view of the cutout of Fig. 3, Fig. 3 is a vertical cross-sectional rear view of the main part, Fig. 4 is a side view of the main part, Fig. 5 is a plan view of the operation lever disposition part, and Fig. 6 is an exploded view of the preliminary seedling accommodation device. FIG. 7 is a vertical sectional side view of the locking mechanism, FIG. 8 is a cross-sectional plan view of the locking mechanism, FIG. 9 is a partial cross-sectional view of the electromagnetic solenoid, and FIG. 10 is an overall side view of the rice transplanter. is there. (3) …… Seedling platform, (11) …… Spare seedling storage device, (23)
…… Seedling holding stay, (B) …… Position adjustment mechanism.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshiyuki Kojima 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Iron Works Co., Ltd.Sakai Works (72) Inventor Hiroshi Okuda 64, Ishizukitamachi, Sakai City, Osaka Sakai Works (56) References JP-A-63-286296 (JP, A)

Claims (1)

[Claims] 1. A spare seedling storage device (11) is disposed above a seedling mounting table (3) in an inclined posture, and the spare seedling storage device (11) is
Freely switchable between a seedling placing position for holding and holding the spare seedling and a seedling supplying position for slidingly supplying the spare seedling onto the seedling placing table (3) with one end approaching the seedling placing table (3). In addition to the above, the raised seedlings on the seedling placing table (3) are raised on the lower surface side of the auxiliary seedling holding device (11) in a state where the preliminary seedling holding device (11) is at the seedling placing position. A preliminary seedling accommodating structure for a rice transplanter to which a seedling pressing stay (23) for blocking is attached, wherein the seedling pressing stay (23) is urged to swing toward the seedling placing table (3) side and upward. The auxiliary seedling holding device (11) is pivotally supported in a retractable state, and the seedling holding stay (23) is brought into contact with the auxiliary seedling holding device (11) so that the seedling holding position is higher than a predetermined seedling holding position. Abutment screw type position adjustment mechanism (B Preliminary seedling accommodating structure of rice planting machine are provided with.