JPH0223806A - Seedling planting device - Google Patents

Abstract

PURPOSE:To prevent arising of vacant hill phenomenon by operating all longitudinal feeding mechanisms including divided longitudinal feeding mechanism corresponding to stopped planting row in arriving of seedling loading stage at transversely transferring end in operating state of stopping clutch of each row planting. CONSTITUTION:A control means controlling on-off of clutch of each row so as to work in such a manner that a seedling loading stage 4 is brought to transversely transferring end in stopped state of planting by operation of stopping clutch of each row planting, longitudinal feeding mechanism of corresponding divided row is operated as fixed amount of feeding and then stopped each row planting, is provided. Even cutting part is remained at lower end part 'a' of mat-like seedling A, longitudinal feeding is performed with remaining said remained cut part and after once said seedling is delivered, longitudinal feeding of corresponding planting row is not performed as far as stopping state of planting is kept by each stopping clutch of row planting.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a method for planting each row in which the planting operation of a seedling planting mechanism can be turned on and off for each divided row among all the planting rows. In addition to a stop clutch, a vertical feed mechanism is provided that sends out a predetermined amount of mat-like seedlings toward the cup removal port at the horizontally moving end of the seedling table, which moves back and forth horizontally from side to side in conjunction with seedling removal. Regarding a seedling planting device.

[Conventional technology]

Conventionally, in this type of seedling planting device, when the individual row planting stop clutch is activated and the planting operation is stopped, a vertical feed mechanism corresponding to the above-mentioned individual row planting stop clutch that engages in the stopping operation is used. It was stopped immediately (for example, Utility Model 61-438
Publication No. 21).

[Problem to be solved by the invention]

In this way, if the timing for each row planting stop clutch to operate and stop the planting operation of the corresponding planting row is during the reciprocating horizontal movement of the seedling bed, then the timing for stopping the planting operation of the corresponding planting row is in the middle of the reciprocating horizontal movement of the seedling bed, then the timing is set for the two rows on the left in Fig. 4. As shown, the mantle-shaped surface of the lower end of the seedling stand (4), which is secured by the lower end sliding rail (3), may remain without being completely cut out. In addition, since the seedling stand (4) continues to move horizontally, next time when the stopped clutch for planting each row is operated to return to the planting state, as shown in the figure, Mat-shaped seedlings (A) are taken out from the seedling outlet (4a)
Cutting of seedlings would begin from the blank spaces that had not yet been drawn out, resulting in the phenomenon of missing plants.

An object of the present invention is to provide a plant that can avoid the plant shortage phenomenon by changing the vertical feeding operation when the planting is stopped due to the operation of the row planting stop clutch.

[Means to solve the problem]

■ A vertical feed clutch for each row is provided that can independently start and stop vertical feed for each divided row into which the total number of planting rows is divided; If the seedling stand reaches the horizontal movement end while it is stopped,
A control means is provided for controlling the on/off of the clutch for each strip in order to operate the vertical feed mechanism for the corresponding split strip by a predetermined feed amount and then stop it, and the effects thereof are as follows. .

(Function) In other words, when the seedling stand reaches the end of horizontal movement with each row planting stop clutch activated and planting stopped, the divided vertical feed mechanism corresponding to the stopped planting row is activated. The vertical feed mechanism of the complete collection operates, including .

Therefore, as shown in Fig. 4, even if there is a cut-out residue at the lower end (a) of the mat-like seedling (A), the cut-out remaining part is placed on the seedling table because it is vertically fed while leaving it. A predetermined amount of mat-shaped seedlings are fed out while being pressed against the lower end sliding rail (3). After one end is paid out, as long as each row planting stop clutch maintains the planting stop state, the corresponding planting row will not be vertically fed.

[Effect of the invention] Since each row stop works in this way and the seedlings are always fed out to the position of the seedling take-out opening, even if the planting stop state is canceled next time, the phenomenon of missing plants will not occur. , it will not significantly impair planting efficiency.

[Example] Hereinafter, an example of the present invention will be described using a riding type rice transplanter, which is one type of rice transplanter, based on the drawings.

As shown in FIG. 3, a planting case (31) is provided which is rotatably driven around the horizontal axis (P,) of a transmission case (14) extending rearward from the planting mission (1), A planting arm (2) is pivotally supported at both ends of the planting case (31), and a seedling stand ( 4) constitutes a seedling planting device for a four-row riding type rice transplanter.

To explain in detail the transverse feed drive structure of the seedling platform (4), as shown in Fig. 1, one transverse feed shaft (5) protrudes from the left and right sides of the planting mission (1), and this transverse feed Support members (6) for the seedling stand (4) are connected to the left and right sides of the shaft (5).

A reinforcing member (7) is constructed and connected across the upper end of the support member (6), and the support member (6)
A connecting arm (8
) is attached, and this connecting arm (8) connects to the seedling stand (4).
) attached to the back.

With the above structure, the entire transverse feed shaft (5) is driven horizontally to move the seedling stand (4) onto the sliding rail (
3) Slide it on top.

Next, to explain in detail the structure for vertically feeding the mat-like seedlings (A) on the seedling rack (4), as shown in Figures 1 and 3, there are four rows on the back of the seedling rack (4). One hexagonal shaft (1
5) is rotatably supported, and a pair of drive rollers (9) are provided for one planting row of the seedling stand (4), and this drive roller (9) is connected to a hexagonal shaft (15). It is fitted onto the outside so that it can freely rotate. The pair of driving rollers (9) are connected by a first connecting member (10) which is cylindrical and is reversible with respect to the hexagonal shaft (15), and the two driving rollers (9) are connected by a first connecting member (10) which is cylindrical and can be rotated freely with respect to the hexagonal shaft (15). 1 connection member (1
The drive rollers (9) are connected by a second connection member (22) similar to 0), and these drive rollers (9) and hexagonal shaft (15) are connected to the seedling stand (4) via the bracket (11). It is rotatably supported on the back. Further, a driven roller (12) and an auxiliary roller (23) are arranged above the driving roller (9), and a feeding belt with rubber protrusions serving as a vertical feeding mechanism (13) is wound over these. It is.

When the seedling stand (4) reaches the end of the horizontal feed stroke, the hexagonal shaft (15) is rotated by a set angle. (6), a first rotation shaft (17) is installed, and the negative end of the first rotation shaft (17) extends to near the end of the seedling stand (4), and this extension The end is the support member (
A support arm (24) is attached to the hexagonal shaft (15) from this pipe member (24).
25) has been constructed.

A rod (19) is installed across the first arm (17a) at the extending end of the first rotation shaft (17) and the drive section (18) of the hexagonal shaft (15). The drive unit (1
8) is fitted onto the outside of the hexagonal shaft (15), and is equipped with a one-way flanch that only allows the hexagonal shaft (15) and the feeding belt (13) to rotate downwardly toward the seedling feeding side.

As shown in the figure, crank arms (2o) are provided on both sides of the planting mission (1), which are rotated in conjunction with the horizontal feeding of the seedling platform (4). )
When reaches one stroke end of the lateral feed, the crank arm (20) contacts the second arm (17b) of the first rotation shaft (17) from below and pushes it up, causing the first rotation Shaft (17), first arm (17a), rod (
19) The hexagonal shaft (15) is rotated by a set angle via the drive unit (18), and this rotational power is transmitted to the drive roller (9) via the longitudinal feed clutch (16), which will be described later. Then, the mat-shaped seedlings (8) on the seedling stand (4) are sent to the lower end (towards the sliding rail (3)) by the feeding belt (13).

Next, to explain the vertical feed clutch (16) in detail, as shown in FIG. It is attached so that it can slide, and the shift member (2
1) at the center, the shift member (21) engages with both the engaging portions (9a) of the left and right drive rollers (9), and together with the hexagonal shaft (15), all the drive rollers (9)
) rotates as one unit. Then, when the shift member (21) is slid to the right or left, the shift member (21)
) moves away from the engaging part (9a) of the other drive roller (9), and the two drive rollers (9) on the side where the shift member (21) engages rotate integrally with the hexagonal shaft (15). The other two drive rollers (9) stop.

Next, to explain in detail the operation structure of the vertical feed clutch (16), as shown in Fig. 1, the operation of the planting case (31) and the planting arm (2) of the two rows on the right side or the two rows on the left side is stopped. A switching lever (26) for operating a monorail clutch (not shown) is provided, and this switching lever (26)
A lever guide (27) is provided with a balance arm (28) swingable around an axis (P3). On the other hand, the shift member (
A shift arm (29) that slides the balance arm (21) is supported so as to be swingable around the axis (P4).
) A pair of wires (30a) and (30b) are installed across the arm (28a) and the shift arm (29), and a neutral return spring (32) is attached to the shift arm (29). .

With the above structure, when the switching lever (26) is engaged and fixed in the center position of the lever guide (27), the switching lever (26) is engaged in the recess (28b) of the balance arm (28) and the balance is fixed. The arm (28) will also be fixed in a neutral state, and the vertical feed clutch (16) will be in the state shown in Figure 1, so that all the planting rows will be planted and the mat-shaped seedlings (A) vertical feeding will be performed.

When the switching lever (26) is engaged and fixed, for example, in the (ROFF) position, the planting cases (31) and the planting arm (2) on the two right rows stop, but each row pupil feed clutch (16) performs the following operations.

That is, the explanation will be based on the operation by the control means (B) which turns the longitudinal feed clutch (16) on and off side i7B.

As shown in Figures 1 and 2, the shift arm (29)
A pair of left and right elongated holes (29a) and (29b) are formed in the shaft center (P4) of the shift arm (29).
Left and right restraining rods (33) that restrict swinging around the shift arm (29) are inserted into the elongated holes (29a) and (29b) to restrict swinging of the shift arm (29). The restraining rod (33) is connected to the elongated hole (
29a) and (29b), and is urged to protrude toward the side to be engaged, and is operated to retire to the disengaged state by the solenoid (35). The drive circuit for this solenoid (35) includes two first and second switches (SO).

(Sl) and (S2) are interposed, and this check rod (3
The drive circuit for 3) will be explained.

The first switch (So) is a switch that detects the completion of vertical feeding, and is attached to the support arm (25) as shown in FIG.
The first arm (17a) rotates when the arm (13) operates.
) is operated when it reaches the moving end. On the other hand, the second switches (Sl) and (Sz) are provided at both ends of the lever guide (27) to detect the state in which the switching lever (26) for each strip latch is operated.

The above configuration results in the following control form.

■ When the clutch switching lever (26) is in the clutch state, the check rod (33) is connected to the elongated hole (29a).
, (29b).

■ In this state, if you operate the clutch switching lever (26) to, for example, R-OFF, the second switch (Sl) will switch to OFF.
N works. However, while the vertical feed is not operating, the first switch (So) is not operating, and the check rod (33) remains engaged in the elongated holes (29a) and (29b).

Therefore, the wire (30a) pulled by the swinging of the arm (28a) only extends the spring (36) interposed between it and the shift arm (29). Therefore, each row clutch is not in a disengaged state in reality.
When the vertical feed is activated, the mat-shaped seedlings in the corresponding planting row that has been operated by the clutch are also fed out. Therefore, as shown in Figure 4, even if the operation of the planting arm (2) stops midway, the remaining part will be sent to the new fir tree, so the remaining part will be crushed to some extent. However, when the each row clutch is returned to the on state, the planting arm (2) does not become idle.

■ Then, after the vertical feeding is completed, the first arm (17a
) reaches the reversal end, the first switch (So) is turned on and the check rod (33) is pulled by the solenoid (35). Then, the shift arm (29) is operated to plant two rows on the right side by the spring (36), and the vertical feed clutch (16) of the corresponding planting row is disengaged. On the other hand, the check rod (33) is operated to retire, but
The first arm (17a) returns to its original state.
The switch (So) is turned off and is activated again,
It only contacts the side surface of the shift arm (29) or is located below, but does not perform any locking action.

(2) Here, when the clutch is returned to the on state, the shift arm (29) is returned to neutral by the spring (32), and the check rod (33) is inserted into the elongated hole (2).
Re-enter 9a).

As mentioned above, the check rod (33), the solenoid (35)
), first swing (So), second swing (Sl) (S
2) is referred to as a control means (B) for controlling on/off of the longitudinal feed clutch (16).

The passenger vehicle body (not shown) that connects the seedling planting device is equipped with a hydrostatic continuously variable transmission, and the hydraulic fluid of this hydrostatic continuously variable transmission is formed within the wall thickness of the ground float (38). The oil is stored in an oil tank and receives a cooling effect on the planting surface.

(Another embodiment) As the control means (B), each longitudinal feed clutch (1
6) may be configured to be turned on and off by an electric actuator, and constituted by an electric circuit that controls based on information from a sensor that detects the on/off state of each row clutch and a sensor that detects the operation of vertical feed.

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 the drawing]

Figure 1 is a sectional view showing the vertical feed mechanism and the horizontal feed mechanism;
The figure is a block diagram showing the control means for controlling the on/off of the longitudinal feed clutch, Fig. 3 is an overall side view, and Fig. 4 shows a case in which the longitudinal feed is stopped due to activation of the row clutch, but when the row clutch is activated again and the vertical feed is stopped. It is a back view which shows the seedling picking state of the mat-like seedling when it operates. (2) Seedling planting mechanism, (4) Seedling stand, (4a) Seedling outlet, (13)
...Vertical feed mechanism, (16)...Each row vertical feed clutch, (A)...Matt-like seedling, (B)...
...control means.

Claims (1)

[Claims] Each row planting stop clutch that can turn on and off the planting operation of the seedling planting mechanism (2) is provided for each divided row of all the planting rows, and the left and right clutches are connected to the seedling removal. Mat-shaped seedlings (
A) is a seedling planting device provided with a vertical feed mechanism (13) that sends out a predetermined amount of A) toward a seedling take-out port (4a),
Each row vertical feeding clutch (16) capable of independently starting and stopping vertical feeding is provided for each divided row into which the total number of planting rows is divided, and the each row planting stop clutch operates to start the planting operation. When the seedling stand (4) reaches the end of horizontal movement in the stopped state, the vertical feed mechanism (13) for the corresponding divided row is actuated by a predetermined feed amount and thereafter stopped by the vertical feed clutch ( 16) A seedling planting device provided with a control means (B) for controlling on/off.