JP2839416B2 - Riding rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding rice transplanter, and more particularly to a drawing marker device for the same.

[0002]

2. Description of the Related Art As a marker device for a riding rice transplanter, a pair of left and right drawing markers for marking a next planting travel index line on a mud surface can be switched between a lying action posture and a standing storage posture, and a falling action posture. In addition to the urging of the planting device, the line drawing marker stands upright against the urging when the planting device moves upward and downward from a planting lowering position of the planting device that is provided to be able to drive up and down. Switching means for switching to
Further, there is a type in which a lock means is provided which automatically engages with the drawing marker switched to the upright storage position and holds them in the upright storage position, and which can be unlocked freely. An actuating member connected to the drawing marker through the arm and pivoting in the locking direction in conjunction with the rise of the planting device and rotating in the unlocking direction in conjunction with the descending of the planting device; And a restraining member that automatically engages and locks and unlocks it manually.

[0003]

[SUMMARY OF THE INVENTION] When Ru switching drawing markers in upright stored position in the collapsed working position, it is necessary to release the locking means, which comprises a weight, such as drawing a marker
Draw the spring to urge the draw marker to the lying action position
A tension force Tsu is too long because the operation member via the wire, are unlocked by the force.

However, when the wire and the pulley are covered with stones, mud, etc., or when the planting apparatus is descending, the weight of the drawing marker and the pulling force of the spring are not transmitted to the operating member via the wire, and the operating member is not operated. Cannot be unlocked, and there is a risk that the lock operation cannot be released due to heavy manual operation of the restraint member. Therefore, an object of the present invention is to solve the above-mentioned problem by providing a spring for urging the operating member in the unlocking direction.

[0005]

According to the present invention, a traveling vehicle 3 is provided.
Move the planting device 12 via the lifting link mechanism 8 to the planting lowered position.
From the ascending and descending link machine
In the structure 8, a pair of left and right drawing markers 13, 13 for marking the next planting travel index line on the mud surface are provided so as to be freely switchable between a lying action posture and a standing storage posture, and wires 17, 17 are attached to the drawing markers 13, 13, respectively. 17
From the lowering position of the planting device 12
Draw markers 13 and 13 in conjunction with a certain rise in
Switch to the retracted position and from the raised position of the planting device 12
The drawing markers 13, 13 fall down in conjunction with the descent to the planting position
Pivot the operating members 19, 19 that switch to the working posture, and draw
When the cars 13, 13 are in the standing storage position, the operating members 19, 19
Automatic engagement by pivoting the restraining member 20, 20 to unlock with manual operation as well as lock and, with the lifting link mechanism
Drop marker 13, 13 between drawing marker 13, 13
Marker springs 15 and 15 are provided to urge in the working posture direction.
In addition, springs 23, 23 are provided between the lifting link mechanism 8 and the operating members 19, 19 for urging the operating members 19, 19 in the unlocking direction. is there.

[0006]

[Function] The drawing marker 13 in the lying action posture shown in FIG. 1 (A) and FIG. 2 marks the next planting travel index line on the mud surface while the traveling machine 3 performs the planting operation by the planting device 12. I do. Then, when the planting device 12 is raised at the time of turning around at the edge of a ridge, etc., the relative angular displacement between the top link 4 and the rear vertical link 7 causes the pressing member 31 attached to the top link 4 to rotate the roller of the operating member 19. The kicker 21 is kicked, the operating member 19 is rotated in the locking direction against the spring 23, and the wire mounting portion 22 is automatically engaged with the hook portion 27 of the restraint member 20 (see FIG. 3).

That is, when the planting device 12 is raised by a certain degree or more through the parallel link mechanism 8 by the extension operation of the lifting cylinder 9, the drawing marker 13 is automatically moved to the standing storage position by the locking means 16 in conjunction with this. Lock. On the other hand, in order to move the drawing marker 13 from the standing retracted posture to the lying action posture, the restraining member 20 is manually operated to move the operating member 19 to the weight of the drawing marker 13 and the force of the marker spring 15 and the like via the wire 17. Transmit in the unlocking direction,
Even if a stone or the like gets stuck in the wire 17 or the like, since the operating member 19 is urged in the unlocking direction by the spring 23, it is reliably unlocked.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. A rear link 1 of a traveling rice transplanter having a rear wheel 1 and a seat 2 has a top link 4, a lower link 5 and front and rear links. The seedling mounting table 10 and the planting claw are moved by the extension / retraction operation of the lifting / lowering cylinder 9 through the parallel link mechanism 8 including the vertical links 6 and 7.
A planting device 12 composed of 11 or the like is mounted to be able to move up and down.

In the riding rice transplanter, a pair of left and right drawing markers 13 for marking the next planting travel index line on the mud surface (D) are shown in FIG.
And a standing action posture (A) as shown by a solid line in FIG. 2 and an upright storage posture (B) shown by a virtual line in FIG. (A). The rear vertical link 7 of the parallel link mechanism 8 is provided with a lock means 16 which is connected to a drawing marker 13 via a wire 17 and interlocks with the rise of the planting device 12. An actuating member 19 that pivots in the locking direction and swings about the pivot 18 in the unlocking direction in conjunction with the descent of the planting device 12, and automatically engages and locks the operating member 19; A restraint member 20 that is unlocked by manual operation is provided.

The operating member 19 has a roller 21 on the front side of the rotation fulcrum shaft 18 and a wire mounting portion 22 on the rear side thereof.
A spring 23, which is in the form of a torsion coil and has one end engaged with the rear vertical link 7 and the other end engaged with the upper edge of the operation link 19, is provided coaxially with the wire mounting portion 22. The engaging portion 24 indicated by a freely rotatable collar is urged in the unlocking direction.

The restraining member 20 is provided on the rear vertical link 7 above the operating member 19 so as to be swingable about a fulcrum shaft 25, and a hook portion 27 is formed at a lower portion through an arcuate cam surface 26. The engaging portion 24 of the operating member 19 automatically engages with the hook portion 27 through the guide of the cam surface 26. Check member 20
The one end of a wire 28 connected to the release lever being manually operated is Yes linked via the 2 The bracket 29 or the like, the wire 28 extends upwardly to intersect the longitudinal direction of the bets Uplink 4 .

The marker wire 17 having one end connected to the operating member 19 is connected to the drawing marker 13 via a guide pulley 29.
The support rod 30 is connected to the support rod 30. The top link 4 of the link mechanism 8 has a pressing member 31 corresponding to the roller 21 of the pair of left and right operating members 19, respectively, by a slot 32A and a fastener 32B formed in a bracket 32 as shown in FIG. It is mounted so that it can be adjusted forward and backward, and the pressing cam surface 31A of the pressing member 31
The timing of kicking the roller 21 can be adjusted.

Here, the planting device 12 provided on the traveling machine body 3 so as to be driven up and down by a lifting cylinder 9 is interlocked with the planting lowering position (the position A in FIGS. 1A and 2) by a certain degree or more. When the roller 21 is kicked out by the pressing cam surface 31A of the pressing member 31 due to the angular displacement between the top link 4 and the rear vertical link 7, the operating member 19 is turned around the pivot shaft 18 against the spring 23. In 1 (B), it swings in the counterclockwise direction and the posture
(A) constitutes switching means 33 for switching the drawing marker 13 in (A) to the upright retracted posture (B) against the bias of the marker spring 15 via the wire 17, and the counterclockwise hand direction of the operating member 19. As shown in FIG. 3, the engagement portion 24 shown in the collar automatically engages with the hook portion 27 via the guide of the cam surface 26 of the restraining member 20 as shown in FIG. ) Is maintained by the lock means 16.

Here, the kicking impact when the roller 21 is kicked out by the pressing cam surface 31A of the pressing member 31 is reduced by the spring 23. To release the lock means 16, manually
When the pulling member 28 is pulled up and the restraint member 20 is swung in the clockwise direction in FIG. 3 around the rotation fulcrum shaft 25, the hook portion 27 is disengaged from the engaging portion 24, and the operating member 19 is unlocked by the spring 23 in the unlocking direction. Since it is biased, the unlocking is performed by the marker wire 17,
The lock is forcibly released even if a stone or the like is caught in the pulley 29 or the like.

That is, the marker 13 can be set to the falling action posture while the planting device 12 is lowered via the link mechanism 8, and the locking member 20 is unlocked by manual operation (operation of the lock release lever). Even if the time is short, the lock is surely released. In other words, during the descending stroke of the planting device 12 (a position where the marker is not allowed to be in the lying-down posture position).
In addition, when the lock release lever is operated, there is no opportunity to release the marker together with the restoration of the release lever.

When the planting device 12 is lowered to the planting position, one of the pair of left and right drawing markers 13 is in the lying action position (A) to mark the next planting travel index line on the mud surface. When the engaging portion 24 of the operating member 19 comes into contact with the switch operating piece 35 of the micro switch 34, the switch 36 is pushed in and turned on, and a buzzer, a lamp or the like is activated by this signal. I have.

The microswitch 34 has a U-shaped switch mounting bracket 37 attached to the rear vertical link 7 with bolts 38, and is attached to the side surface of the bracket 37. A slope 37A for positioning the engaging portion 24 is formed on the upper edge of the side plate of the switch mounting bracket (member) 37. When the engaging portion 24 comes into contact with the slope 37A, the switch operating piece 35 is pressed. Here, the impact on the switch operating piece 35 is reduced.

In the prior art, the switch actuating piece was pressed by the plate surface of the actuating member 19, whereas in the present embodiment, the switch actuating piece 34 was elastically deformed by the engaging portion 24 indicated by a collar and pressed. By doing so, the pressing range is expanded.

[0019]

The present invention is as described above, and the lifting link
Unlock the operating members 19, 19 between the mechanism 8 and the operating members 19, 19.
Since the springs 23, 23 are urged in the locking direction, the weight of the marker and the marker spring when the marker wire 17, 17 or the like is caught by a stone or during the descending stroke of the planting device, etc.
Even if it is difficult for the pulling force of the clutch to be transmitted to the operating members 19, 19 through the wire , the restraining members 20, 20 are manually released.
Then, the operating members 19, 19 are securely unlocked by the springs 23, 23.
Can be done.

[Brief description of the drawings]

1A is an overall side view, and FIG. 1B is a side view of a main part.

FIG. 2 is a rear view showing the operation of the drawing marker.

FIG. 3 is a side view showing a lock state of a lock unit.

FIG. 4 is a rear view of a main part.

[Explanation of symbols]

 3 Traveling body 12 Planting device 13 Drawing marker 17 Marker wire 19 Actuating member 20 Check member 23 Bias spring

Claims (1)

(57) [Claims] A traveling body (3) is connected to a traveling body (3) via a lifting link mechanism (8).
To drive the planting device (12) from the lowering position to the higher position
A pair of left and right drawing markers (1) for marking the next planting travel index line on the mud surface is provided on the lifting link mechanism (8).
3) (13) switched into the standing storage position and collapsed working position freely set
Connected to the drawing markers (13) and (13) via the wires (17) and (17).
The planting device (12)
The drawing markers (13) and (13) are standing up and stowed in conjunction with the upward rise
Switch to a new force and planting from the ascending position of the planting device (12)
Drop marker (13) (13) in conjunction with descent to position
Pivot the operating members (19) and (19) that switch to the
Operating member (19) when the car (13) (13) is in the upright storage position
(19) Automatically engages and locks, and pivots the restraint members (20) (20), which are unlocked by manual operation, and the lifting link
Draw marker between mechanism (8) and draw marker (13) (13)
(13) Marker split that urges (13) in the downturning posture direction
(15), (15), and the lifting link mechanism (8)
A riding rice transplanter comprising springs (23) (23) for urging the operating members (19) (19) in the unlocking direction between the members (19) (19).