JPH0356167Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is based on the invention, in which the pine-like seedlings placed on the seedling resting surface are placed on the seedling resting surface in order to prevent the pine-like seedlings from sliding toward the seedling take-out port. The seedlings are configured to be able to move up and down by switching between an active position in which the seedlings are pressed upward and a non-active position in which they are separated from the pine-like seedlings when the vertical feed mechanism is operated to feed out the pine-like seedlings toward the seedling take-out port. This invention relates to a seedling planting device equipped with a stay.

[Conventional technology]

In this type of seedling planting device, the seedling stay is retracted to a non-working position by the operation of the vertical feed mechanism. The arm that is integrally connected to the rotating drive shaft of the tool and the drive arm for changing the posture of the seedling stay are interlocked and connected by a connecting rod, so that the seedling stay is placed in the non-working position only when the vertical feed mechanism is activated. I found something that was configured to switch. (For example, Japanese Patent Publication No. 57-22285).

[Problem that the invention attempts to solve]

However, as shown in FIG. 1A, in this case, the seedling stay 14 is set to operate within a certain range of vertical movement relative to the rotational operation of the rotational drive shaft of the seedling feeder. If the thickness l of the pine-shaped seedling B is thicker than the reference thickness l', when the seedling stay 14 presses the pine-shaped seedling B, the driven member 24
The seedling stay 14 is stopped at a position further away from the drive member 23 than the stop position that acts in the case of thin pine-shaped seedlings, and therefore the stroke of the seedling stay 14 becomes smaller and the seedling stay 14 is positioned upward. Even if an attempt is made to vertically feed the pine-shaped seedlings, the seedling stay 14 is located at a low position within the seedling leaves, and the sliding resistance between the seedling stay and the seedling leaves becomes large, making it impossible to smoothly feed the pine-shaped seedlings vertically. It was hot.

The purpose of the present invention is to add a simple mechanism to the linkage mechanism between the seedling feeder and the seedling stay, thereby ensuring a sufficient upward retraction position of the seedling stay in its non-working position to ensure smooth vertical feeding. The point is to provide something that can be done.

[Means for solving problems]

The characteristic configuration according to the present invention is that a driving member that reciprocates at a constant stroke can be brought into contact with and interlocked with a driven member that is interlocked and connected to the seedling stay, and the driven member is positioned at a standby position in the direction of movement of the driving member. It has an adjustable structure, and its functions and effects are as follows.

[Effect]

In other words, by configuring the driven member to be adjustable in position with respect to the driving member at the standby position, the contact phase between the driving member and the driven member that operate with a constant stroke changes, so the swinging phase of the driven member is changed. changes.

Therefore, as shown in FIG.
By bringing the drive member 23 closer to the drive member 23,
The swinging phase of the driven member 24 is different from that in FIG.
Since the seedling stay 14 is moved up and down while being further away from the seedling placement surface a, the pine-shaped seedling B
Even if the thickness of the seedlings increases, a predetermined distance can be maintained from the upper surface of the pine-like seedlings, and smooth vertical feeding can be achieved.

[Effect of idea]

As a result, simply by configuring the driven member so that its position can be changed, it is possible to smoothly feed the pine-shaped seedlings vertically, regardless of the thickness of the pine-shaped seedlings, and the holding action by the seedling stay can also be performed as before. It is possible to prevent stock shortages due to poor vertical feeding and shearing due to insufficient pressing force.

〔Example〕

As shown in FIG. 8, the transmission shaft 1 extending from the passenger aircraft body (not shown) is connected to the planting transmission case 39, and the transmission shaft 1 extending from the planting transmission case 39 corresponds to each planting row. A planting mechanism 5 including a planting claw 3, a planting arm 4, etc. is provided at the rear end of the planting case 2.
A seedling planting device A includes a seedling platform 6 that can slide back and forth from side to side with respect to the planting mechanism 5, and a grounding float 7 below the seedling platform 6. The rice transplanter is connected to a riding machine (not shown) via a lifting link mechanism 8 so as to be able to rise and fall freely, thereby forming a riding type rice transplanter.

The structure of each clutch 9 will be explained in detail. As shown in FIG. 7, the power from the transmission shaft 1 extending from the passenger aircraft (not shown) is applied to the front end side of the planting case 2, which is equipped with a pair of planting mechanisms 5, 5 on both the left and right sides. A sprocket 11 is loosely fitted onto the transmission shaft 10, and supports a transverse transmission shaft 10 thereon. A clutch member 12 is spline-fitted onto the transmission shaft 10 facing the sprocket 11 so as to be slidable in the transmission shaft axis direction Each clutch 9 is provided with a toothed portion and is configured to be capable of transmitting power from a transmission shaft 10 to a sprocket 11. A clutch operating piece 34 is provided on the clutch 9, which is rotatable around the axis Y.
One end is brought into contact with the clutch member 12, and the other end is configured to engage with the recess a of the disc-shaped portion 11A integrally formed on the sprocket 11, and the clutch operation piece 34 is operated in the direction of the arrow shown in the figure. In particular, the clutch member 12 is separated from the sprocket 11 against the spring biasing force, and
The sprocket 11 is configured to stop rotating by engaging with the recess 11a of the sprocket disc-shaped portion 11A. The sprocket 11 is operatively connected to a crankshaft (not shown) of the planting mechanism 5 via a chain 35. 13 in the figure is a seedling stay 14 which will be described later.
This is a drive cam for changing posture.

The vertical feed mechanism 15 that feeds the pine-shaped seedlings B toward the seedling take-out port 6A of the seedling table 6 will be described in detail.
A seedling feeder 16 that protrudes from the seedling placement surface a and feeds the pine-shaped seedlings B toward the seedling take-out port 6A is fitted onto a hexagonal shaft 17 that is supported to be able to operate independently for each two planted rows. A one-way clutch 18 and a return spring 19 are attached to the hexagonal shaft 17. An operating shaft 20 is rotatably provided below the hexagonal shaft 17 and supported by the seedling stand 6 and biased by a spring 38 in one direction. passive arm 2
1 and a drive arm 22 that contacts and drives the seedling stand 6.
A transmission arm 24, which is an example of a driven member that is brought into contact with and swung by a drive piston member 23 (to be described later) at the end of the horizontal sliding stroke, is fitted therein. The driving piston material 23, which is an example of a driving member, has its own axis Z.
It is pivotally supported on the planting case 2 so as to be able to slide in the direction, and the inner tip of the case 2 is urged into contact with the cam surface of the posture switching drive cam 13, and the outer tip of the case 2 is abutted in a conical shape. Attach the portion 23a and attach the transmission arm 2.
4 is configured to swing in contact with each other. Abutting surface 23b of the transmission arm 24 of the curved abutting portion 23a
is provided along the direction of movement of the seedling stand 6, which moves up and down to adjust the amount of seedlings taken through a support pin 25 that is slidably supported in the planting case 2 in the axial direction. Therefore, the positional relationship between the curved contact portion 23a and the transmission arm 24 remains unchanged despite the adjustment of the amount of seedlings taken. In addition, as shown in FIG. 6, 26 in the figure is a spiral shaft 27 that controls the horizontal sliding movement of the seedling stand 6.
This is a frame that interlocks and connects the shaft end of the seedling stand 6 with the seedling stand 6. Further, the helical shaft 27 is housed in a cylindrical shaft 36 that is transmitted to the transmission shaft 1 by a bevel gear, and is configured to be able to slide laterally in the axial direction by a piece member 37 that engages with the helical groove.

Next, the seedling stay 14 will be explained in detail. A horizontal connecting rod 31 to which two long pressers 29 and four short pressers 30 are attached is attached to both end brackets 32 and 3.
2, and both end brackets 32, 3
2 An arm 3 integrally connected to a connecting rod 31 on the inner side
3, and this arm 33 is artificially connected to the connecting rod 31.
The connecting rod 31 is also configured to be able to change its swing position relative to the brackets 32 at both ends around the axis of the connecting rod 31.
The postures of both pressers 30 and 29 can be changed significantly, and are effectively used when replenishing seedlings. The above items are provided for each two planting rows as one set. The brackets 32 at both ends are pivotally supported by pins 6a, 6a via elongated holes 32A, 32A to the seedling stand 6 so as to be able to swing up and down, and the operating shaft 2
The holding tool 30 is connected to the swinging arm 28 fitted to the pine seedling B so as to be able to swing relative to it, and the holding tool 30 is switched to a non-working position in which the holding tool 30 is separated upwardly from the pine-shaped seedling B by the operation of the driving piston member 23. The presser 3 moves upward and retreats, and the drive piston member 23 stops operating.
0 and descends to switch to the working position of pressing the pine-shaped seedlings B onto the seedling placement surface a.

From the above configuration, the drive piston member 23, which always slides when in contact with the attitude switching drive cam 13, is connected to the transmission shaft 20 fitted to the operating shaft 20 at the end of the reciprocating sliding stroke of the seedling stand 6. By swinging the arm 24 and rotating the operating shaft 20,
Both end brackets 32, 32 are connected to the swing arm 28 by operating the swing arm 28.
The seedling stay 14 is evacuated to a non-working position via the . On the other hand, the drive arm 22 is simultaneously rotated by the rotation of the operating shaft 20, and after a certain period of time has elapsed since the raising of the seedling stay 14, the drive arm 22 is actuated to rotate the seedling feeder 16. It is set as. After vertically feeding the seedlings, the seedling stay 14 returns to its working position by the retraction of the driving piston member 23. When the respective clutch 9 is operated in such a normal state, the power transmission to the sprocket 11 is cut off, so that the drive piston member 23
The operation of the seedling stay 14 is stopped, the switching of the seedling stay 14 to the non-operating position is prevented, and the operation of the vertical feeding mechanism 15 is also stopped.

As shown in FIG. 2, an adjustment bolt 40 is provided at the tip of the transmission arm 24 and is screwed toward the drive piston member 23 so that its position can be adjusted in the operating direction.
By changing the abutment phase of the tip, the swinging phase of the transmission arm 24 and the vertical operating position of the seedling stay 14 relative to the seedling resting surface a can be changed. In other words, by bringing the adjustment bolt 40 close to the driving piston member 23 along the operating direction, the vertical operating position of the seedling stay 14 can be moved away from the seedling placement surface a, and even for thick pine-shaped seedlings B. It is designed to sufficiently capture the amount of upward retraction of the stay B. If the pine-shaped seedling B is thin, the opposite operation may be performed to bring the vertical operating position of the seedling stay 14 closer to the seedling placement surface a.

[Another example]

○B As shown in FIG. 9, the transmission arm 24 as a driven member is configured to be adjustable in position toward the driving piston member 23 as a driving member, by loosely fitting the transmission arm 24 onto the operating shaft 20,
A configuration may be adopted in which the mounting phase to the operating shaft 20 is changed using the set screw 41.

○B As shown in FIG. 10, by setting the sliding direction of the seedling stay 14 in a direction that is inclined obliquely upward from the direction perpendicular to the seedling placement surface a, the seedling stay 14 is able to move the pine-shaped seedlings when it is lowered. It has the effect of pushing down B.

○C In FIG. 1A, the adjustment bolt 40 is not brought into contact with the drive piston member 23 at the standby position, and
It is constructed so that it comes into contact with the drive member 23 mid-slide and operates integrally, and the substantial swing angle of the transmission arm 24 is made smaller than the swing angle in FIG. The swing stroke may be varied so that the stroke becomes larger when the pine-like seedling B becomes thicker.

[Brief explanation of the drawing]

The drawings show an embodiment of the seedling planting device according to the present invention, and FIGS. For thick pine-shaped seedlings, Figure 2 is a side view showing the adjustment structure of the driven member, Figure 3 is a partially cutaway vertical side view showing the vertical sliding structure of the seedling stay, and Figure 4 is a side view showing the adjustment structure of the driven member.
The figure is a partially cutaway vertical side view showing the drive structure of the vertical feed mechanism, Figure 5 is a vertical rear view showing the seedling stay and the vertical feed mechanism, Figure 6 is a sectional view showing the spiral shaft, and Figure 7 is a cross-sectional view of each row. FIG. 8 is a cross-sectional plan view showing the clutch, FIG. 8 is an overall side view, FIG. 9 is a side view showing another embodiment of the driven member adjustment structure, and FIG. 10 is a longitudinal side view showing another form of vertical movement of the seedling stay. be. 6... Seedling stand, 6A... Seedling outlet, 14...
... Seedling stay, 15 ... Vertical feed mechanism, 23 ... Drive member, 24 ... Followed member, B ... Pine-shaped seedling, a
...The surface on which the seedlings are placed.

Claims (1)

[Scope of utility model registration request] The seedling stay 14 is configured to be able to move up and down to switch between an active position in which the pine-shaped seedlings B placed on the seedling tray 6 are pressed onto the seedling placement surface a and a non-active position in which the pine-shaped seedlings B are separated from the pine-shaped seedlings B. It is configured to change to a non-working position in conjunction with the operation of the vertical feed mechanism 15 that feeds the pine-shaped seedlings B toward the seedling take-out port 6A, and to return to the working position in conjunction with the stop of the vertical feed. The seedling planting device is configured such that a driving member 23 that reciprocates at a constant stroke can be brought into contact with a driven member 24 connected to the seedling stay 14, and the driven member 24 is driven in a standby position. Part 2
3. A seedling planting device whose position can be adjusted in three moving directions.