JPH0228659Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has a planting claw that intermittently takes out seedlings from pine-shaped seedlings on a seedling stand that moves back and forth with a constant stroke, and the seedlings are taken out at a fixed position in the direction of movement of the seedling stand. A spiral shaft having a helical groove for reciprocating drive with respect to the seedling rest and a top member engaging the spiral groove are provided so that one of them is reciprocated integrally with the helical shaft to the seedling rest. The screw shaft and the top member are supported in a planting mechanism case in a state where they are interlocked and connected, and the other is driven and rotated at a constant position in the direction of movement of the seedling table, and the one of the screw shaft and the top member that is driven and rotated is driven. A device for changing the speed is provided in the planting mission case,
The planting claw is configured to be able to change the amount of seedlings taken out per time, and a protrusion for displaying a specific rotational phase of the one of the screw shaft and the top member that is driven and rotated is set to The projection is provided in the planting mission case so as to be rotated together with the object to be rotated, and the protrusion is visible from outside the case only when the object to be driven and rotated is in the specific rotation phase. The present invention relates to a seedling planting device in which a hole is formed to allow this, and a transparent cap is fitted into the hole.

According to the seedling planting device, when operating the transmission to change the amount of seedlings to be taken out, it is confirmed by the position of the seedling platform itself that the seedling platform has reached near the stroke end. By making it possible to confirm by reading the protrusions that the drive-rotated parts of the top member and the screw shaft are in a specific rotational phase, the speed change operation accompanying the change in the amount of seedlings to be taken out is improved. As a result, the timing of the operation of the claw to take out the seedlings in response to the movement of the seedling stand becomes incorrect.
For example, avoid inconveniences such as a large change in the amount of seedlings taken out near the stroke end of the seedling pedestal, or collision between the seedling pedestal and the nail when taking out seedlings near the stroke end of the seedling pedestal. However, because of the transparent cap, it was difficult to see the protrusions from outside the case.

In other words, in the past, the transparent cap was formed into a cylindrical shape with a bottom located on the outside of the case, but in this case, lubricating oil such as grease and dust that entered the case could enter the cap. It was obstructing the view. For this reason, methods have been proposed to form the transparent cap into a solid shape, but
Since the thickness of the cap becomes large, the passage of light is likely to be obstructed by the cap itself, and the above-mentioned disadvantage cannot be avoided.

An object of the present invention is to make it possible to see the protrusions through the cap from outside the case through a simple modification.

The structure of the present invention is that, in the above-mentioned seedling planting device, the transparent cap is formed into a bottomed cylindrical shape with the bottom located on the inside of the case, and the length of the bottomed cylindrical shape is In the fitted state, the length is set so that the bottom surface is not located on the outer side of the case wall than the inner surface of the case wall of the planting mission case.

In other words, the bottom of the bottomed cylindrical transparent cap is located on the inside of the case, and the bottom surface is not located outside of the inner surface of the case wall.
It is possible to prevent lubricating oil such as grease and dust from entering the cap insertion hole, and
Since it is cylindrical with a bottom, light can pass through the thick and small bottom, making it possible to see the protrusions from outside the case without being adversely affected by the cap. Ta.

Next, embodiments of the present invention will be described based on the drawings.

Figures 1 and 2 show a four-row type seedling planting device installed in a riding rice transplanter, in which power from the passenger vehicle body is transmitted via a transmission shaft 1 that is extendable and bendable. A seedling case 2 is provided, and a seedling tray 3 in an inclined position is provided in such a manner that it is horizontally reciprocated with a constant stroke as described later, and four pine-shaped seedlings w on the seedling tray 3 are placed from the lower end of each. Four planting claws 4 that take out seedlings intermittently are installed at a fixed position in the lateral direction and are rotated up and down to take out the seedlings. A plurality of rotary feeders 7 are provided to lock and feed the seedling table w downward, and each time the seedling tray 3 moves by a predetermined stroke, the planting claws 4 of the sliding frame 5 receive the lower end of the seedling tray. The structure is such that a seedling corresponding to one plant is taken out from the notch 6 and planted.

As shown in FIGS. 1 to 4, in order to drive the seedling rest 3, a spiral shaft 9 provided with a spiral groove 8 for reciprocating the seedling rest 3 is moved laterally integrally with the seedling rest 3. The frame member 10, which is slidably supported through the planting mechanism case 2 while being non-rotatably attached to the seedling stand 3, and which engages the spiral groove 8, is positioned relative to the spiral shaft 9. The cylindrical member 11 is rotatably fitted onto the outside and non-slidably supported within the planting mission case 2, and is rotatably supported around an axis perpendicular to the screw shaft axis.
By driving and rotating the top member 10 around the screw axis, the seedling stand 3 is laterally reciprocated.

The cylindrical member 11 has two large and small gears 12a,
12b is attached so as to be integrally rotatable, and the transmission shaft 14 is interlocked with the transmission case input shaft 13 by a bevel gear.
A shift gear 15 having two large and small gear portions that selectively mesh with both gears 12a and 12b is spline-connected, and a shift fork 16 for the shift gear 15 is slidably supported on the transmission case 2. Attached to 17, operating shaft 17
A positioning spring ball 18 is provided in the transmission case 2, and the drive speed of the frame member 10 is gear-shifted into two high and low gears, so that the amount of seedlings taken out per planting claw 4 can be changed. It is set as.

More specifically, when the top member 10 is driven at bottom speed, the planting claw 4 performs the seedling retrieval operation 26 times while the seedling platform 3 moves once in its stroke.
Also, when the top member 10 is driven at high speed, the seedling stand 3
While the is moving its stroke once, the planting nail is
It is configured to perform seedling retrieval operations 18 times. As shown in FIG. 5, the planted nails 4 are
During low speed driving, the block member 10 is moved as shown by L.
Seedlings are taken out every time it rotates 180 degrees, and when driving at high speed, the top member 11 moves as shown by H.
Seedlings will be taken out every time it rotates 260 degrees.
Furthermore, in both bottom speed and high-speed drive,
When the seedling stand 3 is located near the stroke end, the seedlings are taken out twice while the top member 10 rotates 360 degrees. In other words, when the seedling tray 3 moves toward the stroke end, seedlings are picked up once, and then the feeder 7 feeds the pine-shaped seedlings w downward, and then when the seedling tray 3 moves forward, the seedlings are picked up once. The structure is such that seedlings can be taken out once.

A feeder operating arm 22 is attached to both lateral ends of the transmission shaft 14, and a cam follower 23, which is pressed and operated by the arm 22 every time the seedling platform 3 reaches the stroke end, is linked to the feeder 7. The feeder 7 is configured to be rotated by a constant angle each time the seedling stand 3 reaches the stroke end.

A protrusion 19 is provided for displaying a specific rotational phase of the top member 10 corresponding to the positions L' and H' from which seedlings are first taken out when the seedling stand 3 reaches the stroke end and is moved backwards. A disk-shaped member 20 is externally fitted onto the cylindrical member 11 so as not to be relatively rotatable, and a hole 21 is provided that allows the protrusion 19 to be viewed from outside the case 2 only when the frame member 10 is in a specific rotational phase. Further, a bottomed cylindrical transparent cap 24 made of synthetic resin is formed into a bottomed cylindrical shape with the bottom located on the inside of the case, and
The length of the bottomed cylindrical shape is such that when the cap is fitted, the bottom surface is not located on the outside of the case beyond the inner surface of the case 2 wall, and the bottom is located on the inside of the case. It is elastically fitted into the hole 21 so that it can be confirmed from outside the case through the transparent cap 24 whether the rotational phase of the link member 10 is a rotational phase suitable for performing the gear shifting operation.

A transparent window 25 through which light can pass is attached to the upper part of the mission case 2, so that the projection 19 can be irradiated with light from above.

As shown in FIGS. 2 and 6, a seedling stand support frame 26 is bolted to both ends of the screw shaft 9.
It is bolted to the back of the seedling stand 3 through a long hole 27 so that its relative lateral movement can be adjusted. A side frame 3A for regulating the lateral movement of seedlings protrudes from the upper part of the seedling stand 3.
A long portion 28 intervening between adjacent ones of
a and a protruding portion 28b that engages in the notch 6.
A jig 28 for assembling a seedling stand is provided, and the screw shaft 9 and the seedling stand 3 can be assembled at an appropriate relative lateral movement position with reference to the sliding frame 5. There is. In addition, if a scale 29 for reading the protruding position of the planting claw 4 toward the side of the seedling stand is formed on the protruding portion 28b, the jig 28 can be used for multiple purposes.

In carrying out the invention, the transparent cap 24 may be screwed into the hole 21. Further, it is more convenient if the bottom of the transparent cap 24 is formed into a magnifying lens shape, for example by forming it into a convex lens shape as shown in FIG.

Further, the specific rotational phase of the top member 10 may be, for example, a rotational phase corresponding to the center of the two seedling take-out points L and L' at the stroke end of the seedling stand during bottom speed driving.

Furthermore, the device for changing the drive speed of the block member 10 may be configured to be able to change the speed in three or more stages.

The present invention can also be applied to a case where the frame member 10 is connected to the seedling rest 3 so as to move integrally therewith, and the screw shaft 9 is provided so as to be driven and rotated at a constant position in the direction of movement of the seedling rest.

[Brief explanation of the drawing]

Figure 1 is a notched side view of the seedling planting device, Figure 2 is an expanded notched front view of the seedling platform drive structure, Figure 3 is an expanded longitudinal sectional front view of the transmission mounting section, and Figure 4 is the protrusion attachment. Figure 5 is a schematic diagram of the spiral groove developed.
FIG. 6 is an exploded partially cutaway plan view showing the loaded state of the jig for assembling the seedling stand, and FIG. 7 is a longitudinal sectional front view of another embodiment. 2... Planting transmission case, 3... Seedling stand, 4... Planting claw, 8... Spiral groove, 9... Spiral shaft,
10... piece member, 19... protrusion, 21... hole,
24...transparent cap, w...pine-shaped seedling.

Claims (1)

[Scope of utility model registration request] A planting claw 4 that intermittently takes out seedlings from the pine-shaped seedlings W on the seedling table 3 that is moved back and forth with a constant stroke.
is provided in such a state that the seedlings are taken out at a fixed position in the moving direction of the seedling resting table 3, a helical shaft 9 provided with a spiral groove 8 for reciprocating the seedling resting table 3, and a piece member that engages in the spiral groove 8. 10, one of them is interlocked and connected to the seedling tray 3 so as to integrally move back and forth therewith, and the other is driven and rotated at a constant position in the direction of movement of the seedling tray. 2, and a device for changing the driving speed of the screw shaft 9 and the piece member 10 which are driven and rotated is provided in the planting mission case 2, The structure is configured such that the amount of seedlings taken out per time can be changed, and a protrusion 19 for displaying a specific rotational phase of the one of the screw shaft 9 and the top member 10 that is driven and rotated is provided. The projection 19 is provided in the planting mechanism case 2 in a state where it rotates integrally with the planting mechanism case 2, and the protrusion 19 is visible from outside the case 2 only when the driven rotation target is in the specific rotation phase. A hole 21 is formed to allow the
The transparent cap 24 is a seedling planting device fitted into the hole 21, and the transparent cap 24 is formed into a bottomed cylindrical shape with the bottom located on the inner side of the case,
In addition, the length of the bottomed cylindrical shape is set to such a length that the bottom surface is not located outside the case wall inner surface of the planting mission case 2 when the cap 24 is fitted. Seedling planting device.