JPH0132819Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention relates to a line drawing marker for rice field working machines such as rice transplanters and direct sowing machines, and in particular, the line drawing marker is set to the use state and the line is drawn at the same time as the planting operation. The object of the present invention is to provide a mechanism that prevents the line drawing marker from returning to its unused state and allows accurate line drawing.

<Prior art> Conventional line markers are generally
As shown in the bulletin, on the left and right sides of the aircraft.
It is known that it can erect and rotate at an angle of around 90 degrees, and when it is laid down horizontally, it draws a line on the rice field with a downward-facing claw at its tip. Furthermore, as shown in the same publication, the mechanism for holding the undulating position of the marker is one that uses the tension of a spring provided near the pivot point of the marker to selectively move the marker over the pivot point in two directions, or a mechanism that uses a spring to move the marker over the pivot point. A mechanism is known in which the folding mechanism is normally biased in the folded state, and when in use, the folding mechanism is folded horizontally against the tension of a spring and locked by providing a separate locking member.

<Problems to be solved by the invention> However, with the above-mentioned conventional technology, if a pressure load from the field is applied to the tip of the marker, there is a risk that the marker will rotate upward and be returned to the unused state. There are problems such as not being able to reliably draw the line to the field, and if such an operation occurs while the aircraft is running, the line may become bent. For this reason, a mechanism is adopted in which the L-shaped corner at the tip of the marker is made flexible and lightly pressed with a spring, or a coil spring is inserted in the middle of the marker, which makes the mechanism complicated and increases the cost. There were drawbacks such as inviting problems.

<Means for solving the problem> Operate the rice transplanter etc. so that it lies down approximately horizontally on the outside of the machine 1 to be in use, and stands up along the side of the machine 1 to be in the stored (non-use) state. A conventional mechanism in which a marker 3, which is connected to an operating section consisting of a lever 12, a rod 9, etc. and is operated to raise and lower and rotate, is rotatably pivoted on both sides of the fuselage 1 is constructed as follows.

A marker base 5 having stopper parts 5b and 5c for pivotally mounting the marker base end 3a of the marker 3 and regulating its rotation angle is provided at an arbitrary position on the side of the fuselage 1 by mounting or the like. The end portion 3a has a lock lever 8 which is connected to a marker operation part on one side and has a stopper 8a on the other side, and has a first posture state in which the marker 3 can freely rotate, and a second posture state in which the rotation of the marker 3 is restricted. It is pivoted so that the posture can be changed freely.

Further, when the marker 3 is turned outward, the stopper 8a is configured to be locked in the engagement recess 5f on the marker base 5 side by changing the posture of the lock lever 8 to the second posture. Furthermore, a spring 1 that maintains each posture state of the lock lever 8 is
0 is stretched between the lock lever 8 and the side end of the marker base 5.

<Operation> From the state shown in Fig. 4, the operator moves the operating lever 12 to A ₁
When the marker is rotated to the left toward _A2 , the rotational force is transmitted to the marker base end 3a via the lock lever 8.
The marker 3 falls down and rotates to the left using the pin 6 as a fulcrum, and at this time, the pin (fulcrum) 7 of the lock lever 8 slides along the guide surface 5a and comes into contact with the stopper portion 5c, causing the marker 3 to fall down and approximately Stops in a horizontal position.

At this time, the lock lever 8 is at the upper limit position B ₁ (first posture state) due to the tension of the spring 10, and when the operating lever 12 is further turned to the left, the lock lever 8 is turned to the left and the neutral point of the spring 10 (spring 10 When the lock lever 8 passes the point on the pin (fulcrum) 7), the tension of the spring 10 automatically rotates the lock lever 8 to the left, and the lower end of the stopper 8a engages with the engagement recess 5f to the second position of _B2 . maintained in the state. At this point, the operating lever 12 is in position _A2 .

Even if a reaction force in the direction C shown in FIG. 1 is applied to the tip of the marker 3 in the second posture state _B2 , the marker 3 will rotate clockwise because the stopper 8a is engaged with the engagement recess 5f. There is no difference in line drawing.

Next, when retracting the line marker 3, when the operating lever 12 is reversely rotated from the _A2 state to the _A1 state, the lock lever 8 first changes from the second attitude state _B2 to the first attitude state _B1. When the operating lever 12 is rotated to the position shown in FIG. 6th
Return to the state shown in the figure. At this time, the upper limit rotation position of the marker 3 is regulated by the pin (fulcrum) 7 coming into contact with the stopper portion 5b.

<Example> The example shown below will be described in detail.
3 and 3 are an overall side view and rear view of a rice transplanter equipped with the delineation marker of the present invention, and both sides of the rice transplanter near the seedling platform 2, which is tilted at the rear of the body 1 of the rice transplanter, are shown. A foldable marker 3 made of an elastic wire such as a spring rope is provided on the left or right side as the machine body 1 advances during rice transplanting work to draw a line by pressing its tip against the field soil surface.

The marker 3 is attached to the back surface (lower surface) of a plate-shaped marker base 5 that is fixed in a backward-slanting manner to both ends of a sliding rail mounting stay 4 that constitutes the lower end of the seedling platform 2 and guides the left-right movement of the seedlings. ), the base end portion 3a of the marker is pivotally attached to the base end portion 3a using a pin 6. The marker 3 is in a used state when it is tilted down substantially horizontally to the side of the fuselage with the pin 6 as a fulcrum, and is in a non-use (stored) state when it is erected at an angle of about 90 degrees.

The left and right marker bases 5, markers 3, etc. have a symmetrical shape, and FIGS. 1 and 4 are partially enlarged views of the left side, and the following explanation will be given for the left side mechanism. Marker base 5 on the left
The diagonally upper left side has an arc-shaped guide surface 5a having a constant angular width and concentric with the pin 6, and the upper and lower ends of this guide surface 5a have stopper portions 5b and 5c consisting of stepped portions projecting outward. is forming. The range of rotation of the marker 3 as it rises and falls is regulated by the stoppers 5b and 5c, as described below.

That is, a plate-shaped lock lever 8 is provided at the marker base end 3a of the line-drawing marker 3 so as to be pivoted at a pin (fulcrum) 7 at a position where it slides into contact with the guide surface 5a. A stopper 8a, which is a protrusion bent toward the front side, is provided so as to come into contact with the side surface of the marker base end 3a when the lock lever 8 rotates clockwise to restrict the upper limit position of the clockwise rotation. Further, a spring receiver 8b made of a pin is provided at the tip of the lock lever 8 and also serves as a connecting fulcrum with the rod 9 for operating the marker, and a spring receiver 5d is correspondingly protruded from the inner lower rear surface of the marker base 5. and both spring receivers 8b, 5
A spring 10 is stretched between d, and the lock lever 8 receives a force from the spring 10 that rotates the marker 3 clockwise when it is not in use, and counterclockwise when it is in use, when viewed from the back.

On the left side of the marker base 5, there is a stopper 5 as described above.
A protrusion 5e constituting c is formed, and the protrusion 5e
An engaging recess 5f is formed at the lower position of e, in which the lower end of the stopper 8a is accommodated and engaged when the lock lever 8 is rotated counterclockwise past the neutral point of the spring 10.

The upper end of the rod 9 is the handle 11 at the rear of the fuselage 1.
It is connected to the upper part of an operating lever 12 whose lower end is pivotally mounted on the side of the operating lever 12 so as to be rotatable left and right. In the illustrated example, the marker 3 and the lock lever 8 are rotated by the rod 9 by rotating the operating lever 12 left and right, and the marker 3 is rotated and the operating state is locked. The rotation of the rod 9 is performed using a device other than rod 9, such as a wire cable (not shown).
Alternatively, the mechanism may be connected to the clutch lever 13 for planting operation provided on or near the handle 11 and operated in synchronization with the clutch lever 13.

In addition, the delineation marker of the present invention can be installed not only on walking rice transplanters shown in Figures 2 and 3, but also on flooded rice transplanters, riding-type rice transplanters, etc., and its installation position is also at the side edge of the seedling stand. It is not limited to the department.

<Effects of the invention> As a result of this invention being constructed as described above, the marker 3 is connected to the marker operating section via the lock lever 8, and the action of the lock lever 8 and the spring 10 allows the marker 3 to always be kept in use or stored. The posture at the time of use is reliably maintained, the marker 3 is prevented from floating or vibrating during use, and accurate line drawing on the rice field can be achieved. In addition, to prevent damage to the marker due to various vibrations and pressure reaction forces applied to the marker, it is sufficient to construct the marker 3 itself with a flexible spring member, etc., instead of using complicated parts to absorb these vibrations as in the past. There is no need for intervention, the mechanism is simple, and costs can be reduced.
There is an advantage that there is no need to attach a locking device to an operating part such as an operating lever or a marker pivoting part, and the locking operation can be performed only by operating the marker operating part.

[Brief explanation of the drawing]

Figure 1 is an enlarged rear view showing the main parts of the marker of the present invention, Figures 2 and 3 are side and rear views showing an overview of the overall structure of a rice transplanter equipped with the line marker of the present invention, Figures 4 and 5 are both rear views of the left main part showing the stored state and usage state of the marker of the present invention, and Figures 6 and 7 are enlarged rear views and same side views showing the details and operation of the main parts. It is a diagram. 1: Aircraft, 2: Seedling stand, 3: Marker, 3a:
Marker base end, 4: Sliding rail mounting stay,
5: Marker base, 5a: Guide surface, 5b, 5
c: Stopper portion, 5d: Spring receiver, 5e: Projection, 5f: Engagement recess, 6: Pin, 7: Pin (fulcrum), 8: Lock lever, 8a: Stopper, 8
b: Spring holder, 9: Rod, 10: Spring, 11: Handle 11, 12: Operation lever, 13:
Kuratsutireva.

Claims (1)

[Scope of utility model registration request] Markers 3 are rotatably pivoted on both sides of the fuselage 1 to be operated by being connected to the operating section so that the marker 3 lies down on the outside of the fuselage 1 to be in use and stands up along the fuselage 1 to be in the retracted state. In the structure, the above marker 3
A marker base 5 having stopper parts 5b and 5c for pivotally mounting the marker base end 3a and regulating its rotation angle is provided on the machine body 1 side, and one side of the marker base end 3a is connected to a marker operation part. A lock lever 8 having a stopper 8a on the other side is pivoted so as to be freely changeable between a first posture state in which the marker 3 can freely rotate and a second posture state in which the rotation of the marker 3 is restricted. Lock lever 8 when turning to lie down.
The stopper 8a is configured to engage with the engagement recess 5f on the marker base 5 side by changing the posture to the second posture state, and the spring 10 for maintaining each posture state of the lock lever 8 is connected to the lock lever 8 and the marker base. A line marker for paddy field work equipment, characterized by being attached to the 5-side edge.