JPS6144566Y2 - - Google Patents

Description

[Detailed description of the invention] This invention forms an index line for the aircraft when planting the next row on the mud surface by pushing the tip into the mud surface or moving it while pressing against the mud surface. Regarding a line-drawing marker device for a rice transplanter, the line-drawing marker device is attached to a rice transplanter so as to be able to swing freely between a non-working position in which the line-drawing marker is retracted upward and a working position in which it is protruded laterally and downwardly. By fixing the marker in the working position, it is possible to draw a reliable and good line regardless of the hardness of the mud surface or changes in unevenness, etc., and the existence of a mechanism for fixing and holding the marker in the working position makes it possible. However, the purpose of the present invention is to make it possible to easily change the position of the marker between the active position and the retracted position by operating a single lever.

The line-drawing marker device for a rice transplanter according to the present invention has a protrusion projecting laterally from the swinging arm of the marker, and by engaging with the protrusion, the marker and its swinging arm can be moved as described above. A cam member having a concave portion that is fixed in position in the working position is swingable about an axis parallel or substantially parallel to the swing axis of the marker swing arm, and the cam member has a recess that is fixed in position in the working position. An arcuate guide surface for elastically slidingly guiding the protrusion during movement is provided in a continuous manner, and the recess is formed near the axis on the base end side of the swing cam member, and the swing Near the free end of the cam member, in conjunction with a lever for switching the posture with respect to the marker, the swing cam member is arranged in a direction that causes the recess to separate from the protrusion when the marker is swing-switched to the upward retracted position. To make it swing,
A rocking mechanism comprising a cam surface formed on the free end side of the rocking cam member, and a cam follower that pushes the cam surface in the detaching direction in conjunction with the operation of the posture switching lever. It is characterized by the fact that it is provided.

That is, according to the present invention, only by continuously switching and operating the lever for changing the posture of the line-drawing marker, when a line-drawing action is required, the marker can be switched to the working position and the desired action in that working position can be ensured. It is possible to perform the fixing for the purpose of holding the robot at once, and when it is necessary to retreat, the above-mentioned fixing release and switching to the retracted position can be performed at the same time. Therefore, by fixing the line-drawing marker in its working position, it is possible to always perform reliable and good line-drawing regardless of field conditions. It has become possible to change postures very easily and quickly using a single lever. Moreover, as mentioned above, the cam member of the mechanism for fixing/unfixing the posture and switching the posture via a single lever is connected to the recess that engages with the protrusion protruding from the swing arm. Since the arc-shaped guide surface is provided and the swinging of the cam member is controlled by the marker side when changing the marker's posture,
There is no risk of poor interlocking, such as the cam member switching to the fixed position before the marker switches to the working position, due to mechanical wear or operational failure due to mud adhesion due to long-term use, and the marker By always maintaining a reliable and smooth state of interlocking action between the locking mechanism and the fixing mechanism, the series of interlocking actions described above by operating the single lever can be maintained reliably and normally even after long-term use. Furthermore, when the protrusion and the recess are disengaged and the marker is swung based on the operation of the posture switching lever, the recess is located near the oscillation axis on the base end side of the oscillation cam member. , and since the swinging cam member is caused to swing by the action of the cam surface on the free end side and the cam follower, the engagement between the protrusion and the recess, and
Even if the pressure contact state during elastic sliding between the arcuate guide surface of the swing cam member and the protrusion is set to be strong, the posture of the marker can be changed with a small operating force of the posture switching lever. In other words, while it is possible to change the marker's posture with a light operation, it is effective in reliably maintaining the working posture when the protrusion and recess are engaged, and in preventing the marker from wobbling in the retracted posture. It is. Furthermore, since there is no need to forget to fix or release the line drawing marker, there is no risk of forgetting to release the fixing and forcibly switching the line drawing marker to the upward retracted position, which is effective in preventing deformation and damage to the device. It is.

Hereinafter, an embodiment of the present invention will be described based on the drawings. FIG. 1 shows a seedling planting device 11 that can simultaneously plant six seedlings at a time at the rear of a riding machine 10.
Fig. 2 shows a rice transplanter that can be freely switched between a working position for planting and a non-working position raised above the ground by swinging up and down. As a result, the delineation marker 1, which forms the aircraft running index line when planting the next row on the mud surface, is retracted upward by swinging around the axis _a1 in the front and rear direction, and has an inactive position and an action that protrudes laterally and downward. This figure shows a line-drawing marker device that is configured to be able to freely switch between postures.

The line drawing marker device is connected to the riding main machine 10.
By interlocking the swinging arm 5 that supports the marker 1 on the side of the vehicle so that the posture can be changed freely, and the operation lever 3 provided on the driver section 12 of the riding machine 10 via a wire 13, the marker 1 can be moved in the driver section 12. It is configured to be able to change the posture of 1.
Moreover, it has mechanisms 2 and 4 configured as follows.

One mechanism 2 is a swing axis of the swing arm 5.
_A cam member 8 has a recess 7 on the swing base end side that fixes the swing arm 5 in the working position by engaging with a protrusion 6 protruding from near the swing axis A 1 in the swing axis A ₁ direction. , the swing axis of the swing arm 5
The cam member 8 is attached to the machine ₁₀ so as to be able to switch freely between the engagement position and the disengagement position by swinging around the axis a ₁ parallel to the axis a 1 .
An arcuate guide surface 9 is formed that connects to the engagement surface of the swing arm 5 and slides and guides the protrusion 6 when the swing arm 5 swings up and down, and swings the cam member 8 toward the engagement action position. A biasing spring 14 is provided, and the engagement between the protrusion 6 and the recess 7 causes the marker 1 to
is fixed in the working position, and the protrusion 6 and the recess 7 are automatically engaged as the swinging arm 5 swings to the working position.

The other mechanism 4 is swingable around an axis a ₃ parallel to the swing axis a ₁ of the swing arm 5 near the free end of the cam member 8, and is connected to the marker posture switching lever. A swinging lever 16 is interlocked and connected to the switching lever 3 via a wire 15 when the switching lever 3 is pulled as the switching lever 3 swings to the upward retracted position.
is provided between the swing lever 16 and the free end of the cam member 8, when the swing lever 16 swings in response to a pulling operation (swinging of the switching lever 3 toward the upward retracted position). , the cam member 8 is pressed and swung against the biasing force so as to separate the recess 7 from the protrusion 8;
In addition, when the switching lever 3 is swung to the operating position, a cam follower 17 that automatically returns the cam member 8 and the swing lever 16 to a state in which the recess 7 is engaged with the protrusion 6 by applying the aforementioned biasing force. and cam surface 18
and a linking portion between the switching lever 3 and the wire 13 that links the switching lever 3 to the swinging arm 5,
At the initial stage of the switching operation from the working position to the upward retracted position, a flexure 19 is provided to disconnect the switching lever 3 and the wire 13. 7 is removed from the protrusion 6, and the swing lever 16 is fixed in position by the cam member 8 as the switching lever 3 switches to the operating position.

The marker 1 is configured to be movable in the longitudinal direction with respect to the swing arm 5, and a buffer spring 20 is interposed in the middle of the marker 1 to absorb shock from the mud surface. .

Further, as shown in FIG. 3, the operation guide plate 21 of the switching lever 3 has a guide groove 22 for switching the marker 1 between the above-mentioned two positions, and a guide groove 22 for switching the marker 1 between the above-mentioned two positions, and a position for moving the marker 1 beyond the upward retracted position to a substantially vertical position. A groove 23 is formed to guide the movement of the lever 3 so as to switch the marker 1.

Furthermore, the line drawing marker device is a
It is provided on both the left and right sides of 0.

24 in FIG. 1 is a preliminary seedling stand.

[Brief explanation of the drawing]

The drawings show an embodiment of the line-drawing marker device in a rice transplanter according to the present invention, in which Figure 1 is an overall plan view of the rice transplanter, Figure 2 is an enlarged rear view of the main parts, and Figures 3 and 4 are the main parts. FIG. 3 is an enlarged rear view showing the operation of the mechanism. DESCRIPTION OF SYMBOLS 1... Line drawing marker, 3... Lever for posture switching, 4... Mechanism, 5... Swinging arm, 6... Protrusion, 7... Recessed part, 8... Cam member, 9... Arc-shaped guide surface.

Claims (1)

[Scope of utility model registration request] By pushing the tip into the mud surface or moving it while pressed against the mud surface, the line drawing marker 1 for forming an index line for the aircraft running when planting the next row on the mud surface is retracted upward. In the rice transplanter, which is attached to the rice transplanter so as to be swingable between a non-working position and a working position projecting laterally and downwardly, a protrusion 6 is protruded laterally from the swinging arm 5 of the marker 1. a cam member 8 having a recess 7 that engages with it to fix the marker 1 and its swing arm 5 in position in the working position;
is swingable around an axis a ₂ that is parallel or substantially parallel to the swing axis a ₁ of the marker swing arm 5, and that the protrusion 6 is provided in a state in which an arc-shaped guide surface 9 for elastic sliding guidance is provided in series, and the recess 7 is formed near the axis a ₂ on the base end side of the swing cam member 8, and the swing cam member 8 is Near the base end of the movable cam member 8, in conjunction with the posture switching lever 3 with respect to the marker 1, when the marker 1 is oscillatedly switched to the upward retracted posture, the concave portion 7 is connected to a protrusion 6.
In order to swing the swing cam member 8 in a direction in which the swing cam member 8 is released from the A line drawing marker device for a rice transplanter, characterized in that it is provided with a swinging mechanism 4 comprising a cam follower 17 that moves in the detaching direction in conjunction with the cam follower 17.