JPH04117206A - Rice seedling planter - Google Patents

Abstract

PURPOSE:To prevent the dropping of seedlings on a deck for the seedlings and simultaneously lift a gate member with good timing by linking a gate member with the pulling chain of a longitudinally transferring device in a specific state, the gate member being employed to thrust into the bed soil of the seedlings on the deck for the seedlings from the upper direction. CONSTITUTION:A gate member 25 is thrust into the bed soil of seedlings W on a deck 6 for the seedlings to prevent the dropping of the seedlings on an outlet 7, and the gate member 25 is lifted from the thrust state through a rod 31 and an arm 27, when a pulling chain 21 is pulled to drive a longitudinally transferring device 8.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a seedling stand configured to be able to be driven to move back and forth in the lateral direction, and a seedling stand configured to be able to be driven to move back and forth in the lateral direction. The present invention relates to a seedling planting device that includes a vertical feeding device that sends out upper seedlings toward a seedling take-out port, and a planting mechanism that takes out the seedlings from the seedling take-out port and plants them.

[Conventional technology]

Conventionally, as this type of seedling planting device, for example,
As disclosed in Japanese Patent No. 26419, even after the seedlings are taken out from the lower end of the seedling rest, the seedling rest does not carry the seedlings under its own weight until it reaches the end of the horizontal movement path, that is, the end of the stroke. It is known to have a seedling presser bar configured to hold down the seedlings from above so that they do not fall into the side of the take-out opening, and to be retracted from the seedling presser position only during vertical feeding.

[Invention or problem to be solved]

However, when using a seedling presser bar like the above-mentioned conventional one, it only holds down the seedlings, so it is necessary to press the seedlings strongly to prevent the seedlings from falling, and the structure of the holding rod is Since a mechanism is provided for retiring the seedling presser at a more timing than the seedling presser position in conjunction with the vertical feeding of the seedling presser, it has disadvantages such as a complicated structure and high cost.

The present invention has been made in view of the above-mentioned circumstances, and is inexpensive and simple in structure to prevent the seedlings on the seedling stand from falling unduly when the seedling stand is fed horizontally. To provide a seedling planting device capable of controlling seedling drop in a timely manner.

[Means for Solving the Problems] In order to achieve the above object, a seedling planting device according to the present invention has the above-mentioned structure, and plunges into the bed soil of the seedlings in the seedling stand from above to A gate member that forms a section partitioning cut corresponding to one row of seedlings for the seedlings facing the seedlings taking out port is connected to one end of the vertically movable arm. A tension chain is provided that is stretched around a chain sprocket connected to the shaft and that rotates the chain sprocket when the seedling stand reaches the end of the lateral movement path, and a tension chain is provided at one end of the chain in the middle of the arm. A supported rod is guided so as to be able to reciprocate in a fixed direction, and in a normal state, the other end of the rod presses and curves the intermediate portion of the tension chain.

The effects of this characteristic configuration are as follows.

[For production]

That is, the gate member plunges into the soil for the seedlings on the seedling stand from above, thereby preventing the seedlings from falling into the side of the take-out opening. In addition, this gate member is used as a tension chain when the tension chain changes from a curved state to a straight state due to tension when the tension chain is tensioned on a chain sprocket connected to a drive shaft to drive a vertical feed device. As the wood pushes up the gate member with the pressure of It can be performed.

〔Effect of the invention〕

Therefore, according to the present invention, it is possible to reliably prevent the seedlings on the seedling stand from falling down by the gate member plunging into the bed soil of the seedlings, and also by utilizing the drive structure of the vertical feeding device. Since the operating position of the gate member is switched in a timely manner, the structure can be simple and inexpensive.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, the embodiment of the seedling planting device according to the present invention will be described based on the drawings by applying it to a riding rice transplanter.

As shown in Figure 1, the transmission case (2) extends rearward from the planting transmission (1), which transmits power from the unillustrated traveling body of the riding rice transplanter, and rotates around the horizontal axis (Pl). The planting mechanism (A
), and also includes a seedling stand (6) that is driven to move back and forth from side to side on the guide rail (5) of the transmission case (2), and a mat on the seedling stand (6). A seedling outlet (
7) Equipped with a vertical feed device (8) that sends out towards the side,
It constitutes a seedling planting device.

The transverse feed drive structure of the seedling stand (6) will be explained. As shown in Figure 4, one horizontal feed shaft (9) protrudes from the left and right sides of the planting mission (1), and a seedling stand (6) is placed on the left and right of this horizontal feed shaft (9). support member (1
0) are connected. A reinforcing member (11) is constructed and connected over the upper end portions of these supporting members (10), and
A connecting arm (12) that can swing freely around the horizontal axis (P2) is attached to the lower end of the support member (1o).
) is attached to the back of the seedling stand (6). With the above structure, the seedling stand (6) is slid on the guide rail (5) by driving the entire transverse feed shaft (9) in the left and right directions.

Next, the vertical feed device (8) and its drive structure will be explained. As shown in Figures 1 and 4, seedling stand (6)
A hexagonal shaft (13) as a drive shaft is rotatably supported on the back side of the holder, and a pair of drive rollers (14) are provided for each planting row of the seedling stand (6). The rollers (14) are externally fitted onto the hexagonal shaft (13), and each drive roller (14) is provided to rotate integrally with the hexagonal shaft (13). A driven roller (15) is disposed above the driving roller (14), and a driven roller (15) is provided above the driving roller (14).
A vertical feeding device (8) is constructed by winding a rubber feeding belt (16) with protrusions over the roller 4) and the driven roller (15).

When the seedling stand (6) reaches the end of the horizontal feed stroke, the hexagonal shaft (13) is rotated by a set angle together with the drive roller (14). That is, as shown in FIG. 4, a first rotation shaft (17) is installed across both the support members (10), and a driving sprocket (18) provided at the negative end of the first rotation shaft (17) is connected to the first rotation shaft (17). A chain (21) is installed across a fan-shaped chain sprocket (20) connected to a drive part (19) equipped with a one-way clutch (not shown) on a hexagonal shaft (13). Drive sprocket (X
8) is also configured in a fan shape. Meanwhile, the planting mission (
1) are provided with crank arms (22) that are rotated in conjunction with the horizontal feeding of the seedling tray (6), and when the seedling tray (6) reaches the stroke end of the horizontal feeding, the crank arms (22) are The arm (22) contacts the fixed arm (17a) of the first rotating shaft (17) from below and pushes it up.
Rotating shaft (17), drive sprocket (18), chain (21), chain sprocket (20), drive unit (1
9) to the hexagonal shaft (13) and thus the drive roller (14).
) is rotated by a set angle to send the mat-shaped seedlings (W) on the seedling stand (6) downward by the feed belt (16), and the return belt (17) fitted externally on the first rotating shaft (17) Due to the spring (23), the first rotating shaft (17), drive sprocket (18), chain (21), and chain sprocket (20) are regulated by the locking piece (17b) and the stopper (24). Return to posture.

Next, when feeding the seedling tray (6) horizontally, the seedling tray (6)
The gate member (25) that enters the upper mat-like seedling (W) from above and prevents the seedling (W) from falling downward will be explained.

As shown in Figures 1 to 5, both sides of the seedling tray (6) and the bulges (6A) of the seedling tray (6) that partition the mat-shaped seedlings (W) corresponding to each row. ) protruding support stay (
A gate member (25) is installed between the free ends of a swinging arm (27), which is an arm whose one end is swingably supported around a horizontal axis (P2). When the seedling stand (6) is moving horizontally, the gate member (25)
In other words, when the seedling stand (6) has not reached the stroke end, its lower end becomes mat-like seedling (W) due to its own weight.
The seedlings (W) facing the seedling removal port (7) are made to penetrate into the bed soil from above, and a section partitioning cut (a) corresponding to one row for seedling removal is formed by the plunge. A cut-forming wall (25A) is provided along the left-right direction, and the planting claw (4a) of the planting arm (4) has a pitch corresponding to the amount of seedlings taken out when taking out the seedlings from the seedling removal port (7). A partition wall (25B) that divides the division (S) left and right is vertically arranged in a state perpendicular to the cut-forming wall (25A). In the cut-forming wall (25A) between the left and right adjacent partition walls (25B), an opening (28) is provided in each section (S) as a passage for seedlings with the lower side open.

As shown in FIGS. 1 and 2, the lower ends of the cut-forming wall (25A) and the partition wall (25B) form a cut (a) in the bed soil when the seedling <W> enters the bed soil. It is constructed in a wedge shape to form a
The part (P) that comes into contact with the mat-like seedling (W) at the lower end of B)
is formed into an inclined surface so that the lower end of the mat-like seedling (W) will not be lifted by frictional force when the gate member (25) in the entry position retreats upward. In addition, on the upper edge of the partition gate (25), there is a canopy-shaped portion (29) extending upwardly.
As shown in Fig. 1, this eave-like part (29) has a holding action to align the seedlings of each section (S) through the opening (28), If the seedlings are taken out in this state, the seedlings can be taken out satisfactorily while the collapse of the seedlings is suppressed.

As shown in FIG. 1, among the swing arms (27),
A swinging arm (27) at the end of the girder provided with a drive part (19).
), the upper end (31a) of the rod (31) is pivotally supported, and the lower end (31b) of the rod (31) is
) is pivoted to one end of a bell crank (32) that is swingably supported around the horizontal axis (P4), and the rod (31) is placed almost perpendicularly to the seedling placement surface of the seedling placement stand (6). It is set to be guided so that it can be moved back and forth in the direction, and the bell crank (
29) A roller (33) pivotally supported at the other end of the arm is attached to the intermediate portion of the chain (21), that is, the chain (21) is installed across the drive sprocket (18) and the chain sprocket (20). The chain (21) is pressed against the intermediate portion in a curved state.

Therefore, when the seedling stand (6) reaches the stroke end of the horizontal feed, the drive sprocket (18) rotates and the chain (21) is pulled in order to drive the vertical feed device (8). Due to the tension, the curved part of the chain (21) stretches linearly, pushing the roller (33) upward, and the rod (31) moves upward accordingly, lifting the swinging arm (27) and taking the plunge position. Gate member (25
) is evacuated to a position above the seedling (W) where it can be vertically fed. When the vertical feeding of the seedlings (W) is completed, the tension of the chain (21) is loosened and the gate member (25) falls under its own weight.

[Another example]

The present invention may be implemented as follows.

(2) When pushing the gate member (25) into the bed soil of the seedlings (W), use not only the weight of the gate member (25) but also a biasing member such as a spring to apply a biasing force to the plunger.

■ As shown in Figure 6, a seedling stand (6) is placed on the upper surface of the gate member (25) installed on the swing arm (27).
The seedling holding arm (
30) are arranged side by side in the left and right direction, and the lower edge of the seedling holding arm (30) presses the mat-like seedling (W) to suppress the mat-like seedling (W) from floating up.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the seedling planting device according to the present invention, FIG. 1 is a side view showing the main parts of the seedling planting device, FIG. 2 is a perspective view showing the gate member, and FIG. 3 is a seedling stand. FIG. 4 is a plan view showing the action of the gate member on the seedlings above, FIG. FIG. 6 is a plan view showing the gate member and the seedling holding arm. (6)...Seedling stand, (7)...Seedling take-out port, (8)...Vertical feeding device, (13)...
...Drive shaft, (2o) Old...Chain sprocket, (21)...Chain, (25)...
・Cate member, (27)...Arm, (31)
...Rod, (31b) ...Other end,
(A)...Planting mechanism, <W>...Seedlings.

Claims (1)

[Claims] A seedling stand (6) is configured to be able to be driven to reciprocate in the lateral direction, and when this seedling stand (6) reaches the end of the lateral movement path, the seedlings (W) on the seedling stand (6) are removed. A seedling planting device comprising a vertical feeding device (8) that sends out toward the side of the exit (7), and a planting mechanism (A) that takes out and plants the seedlings (W) from the seedling removal port (7), Seedlings on the seedling stand (6) (
A gate member (25) that enters the bed soil of W) from above and forms a section partition cut corresponding to one row of seedling extraction for the seedlings (W) facing the seedling extraction opening (7). , is connected to one end of an arm (27) that can freely move up and down,
The chain sprocket (20) is stretched on a chain sprocket (20) connected to the drive shaft (13) of the vertical feeding device (8), and when the seedling stand (6) reaches the end of the horizontal movement path, the chain sprocket (20) A tension chain (21) that rotates the
, and guides a rod (31) with one end pivotally supported in the middle of the arm (27) so as to be able to reciprocate in a fixed direction, and under normal conditions, the other end (
31b) A seedling planting device characterized in that the intermediate portion of the tension chain (21) is bent under pressure.