JP2003174805A - Side marker apparatus for transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a side marker apparatus for a transplanter, with which drawing a line by a marker body 20 is properly carried out according to a field condition and the housing posture of a side marker 2 can be compacted. <P>SOLUTION: In a transplanter equipped with the side marker 2 at the side of a machine body, having the marker body 20 for drawing a line attached to the tip of a marker arm 2a, which can be changed from a line drawing posture to the housing posture of nonoperation, the side marker for the transplanter has constitution that the marker body 20 is rotated in the line drawing direction so that line drawing depth can be adjusted in the operation posture of the side marker 2 and the marker arm 2a is equipped with the marker body 20 through a rotation adjustment part 3 for rotating the marker body 20 to the housing posture along the machine body in the housing posture of the side marker 2. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side marker device for a transplanter that projects laterally from a machine body and draws a traveling reference position for a next planting operation.

[0002]

2. Description of the Related Art A transplanting machine such as a riding rice transplanter for planting seedlings in a field along with traveling of an aircraft has a side marker for drawing a planting operation traveling reference line in the field, for example, Japanese Patent Laid-Open No. 2001-2001.
It is provided with a structure as disclosed in Japanese Patent No. 112307.

[0003]

In the side marker constructed as described in the above publication, a marker body for drawing is fixedly provided at the tip of the marker arm. Therefore, in the drawing work posture of this side marker, since the tip of the marker body draws at a predetermined drawing depth even in a soft field or a hard field, when the marker object comes into contact with a stone or a hard soil block, for example, a large resistance is exerted. Or shocked. In addition, when a large amount of cutting wastes and weeds are scattered, the marker body draws the straws and draws an unclear line that draws the straws on the ground surface. There are drawbacks such as.

Further, when the side marker is rotated upward to switch to the retracted posture, this marker body largely projects to the side of the machine body in the L shape from the marker arm in the upright state, so that it remains as it is. There are problems such as difficulty in storing the aircraft in the barn and running work.

[0005]

In the side marker device for a transplanter according to the present invention, a side marker 2 having a marker body 20 for wire drawing provided at the tip of a marker arm 2a is set to a side of the machine body for drawing work. In a transplanter capable of switching to a non-working storage posture, in the work posture of the side marker 2, the marker body 20 is rotated in the drawing direction to adjust the drawing depth, and the side marker 2 is stored. It is characterized in that the marker body 20 is provided on the marker arm 2a via a rotation adjusting portion 3 for rotating the marker body 20 in a stored posture in which the marker body 20 is along the body.

Further, the rotation adjusting section 3 is provided with a marker arm 2a.
The marker member 20 is rotatably urged by the urging member 33 in the drawing direction at the tip end of the marker body 20, and a positioning member that can adjust the stop position by the urging of the marker body 20 is provided.

Further, the marker arm 2a is characterized in that the base part of the marker arm 2a is provided so as to be rotatable and switchable between a working position and a retracted position with respect to the machine body, and a middle part of the marker arm 2a is foldable.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a traveling machine body of a passenger rice transplanter exemplified as a transplanter, in which an engine section 1b covered with a bonnet is mounted on a front part of a machine body frame 1a having front wheels and rear wheels. A steering section 1c including a handle, a seat, etc. is arranged behind the plant, and a planting device 1 for multi-row planting is further provided in the rear through a hydraulic lifting link mechanism (not shown).
It is configured such that d can be moved up and down.

Further, fertilizer application tanks 1e are mounted on both sides of the engine section 1b, and an auxiliary seedling stand 1f is provided above the fertilizer application tanks 1e. The side markers 2 according to the present invention are provided on the left and right sides of the machine body frame 1a on the sides of the fertilizer application tank 1e by the following configuration.

The side marker 2 has a marker arm 2a.
A rod-shaped marker body 20 for drawing a wire is integrally provided at the tip of the body via a "rotation adjusting portion 3" so that the angle can be adjusted.

The marker arm 2a is divided into a base side arm 2b and a front side marker arm 2c, both of which can be switched between a working posture in which they are extended through a connecting portion 4 and a folded storage posture. The work posture in which the base portion of the base side arm 2b is configured to project and support the whole of the marker arm 2a in the drawn state with respect to the machine body frame 1a via the marker unit 5, and the fertilizer tank 1e and the fertilizer tank 1e are rotated upward. It is configured such that it can be switched to a storage posture in a state of being erected close to the auxiliary seedling placing table 1f side.

As shown in FIGS. 3 and 4, the marker unit 5 is mounted on a mounting bracket 50 which is detachably fixed to the machine body frame 1a, and is installed upright with a mounting rod 51 extending laterally. A unit machine frame 52 is integrally provided, and a lower portion of a rotating plate 21 integrally fixed to a base portion of the base side arm 2b is rotatably supported by a fulcrum shaft 22 at a tip end portion of the mounting rod 51. The midway portion of the cylinder portion 61 of the marker cylinder 6 that moves the piston portion 60 forward and backward in the machine frame 52 by an electric double-action method is used as a fulcrum pin 6 on the horizontal axis.
It is rotatably supported by 2.

The tip end of the piston portion 60 and the rotary plate 21 are rotatably connected by a connecting pin 25 to a connecting hole 23 formed in an arcuate elongated hole centered on the fulcrum shaft 22. From the retracted posture shown by, the piston part 60
When is extended (advanced), the work posture can be changed as shown in FIG.

Further, the connecting hole 2 provided in the rotating plate 21
The connecting pin 25 that moves in 3 is urged from the unit machine frame 52 side via the auxiliary spring 53,
With this configuration, the backward movement of the piston portion 60 when the side marker 2 is in the retracted posture is promoted.

Since the side marker 2 (apparatus) is constructed as described above, when the tip of the drawing marker body 20 at the tip of the marker arm 2a comes into contact with a stone or a hard lump of earth, it becomes the arc shape. Since the marker arm 2a retreats upward through the fulcrum shaft 22 as a fulcrum through the formed connecting hole 23, it protects the side marker 2 from an excessive force and corresponds to the situation of the ground. The line can be drawn appropriately.

Particularly, in the marker unit 5 according to the present invention, the extension / contraction range "M" of the piston 60 is stopped by stopping the extension / contraction of the piston 60 by the contact between the limit switches 7a and 7b and the operating member 7c. 5) is regulated to set the working posture and the storing posture of the marker 2 at proper positions.

Further, a restricting member 7 (a kind of stopper) shown in FIG. 5 is provided between the fulcrum pin 62 and the connecting pin 25, and when a trouble such as a failure occurs in the limit switches 7a and 7b. Limiting the extension of the marker cylinder 6 to limit switches 7a and 7b and the marker unit 5
It is configured to prevent damage to the.

That is, as shown in FIG. 5, the regulating member 7 provided for preventing the abnormal extension of the piston portion 60 has a mounting hole 70 for loosely fitting the base portion side of the plate-like member to the fulcrum pin 62, as shown in FIG.
The connecting pin 25 is fitted to the tip end side, and the connecting pin 25 is freely slid when the marker cylinder 6 is operated, and from the operating range (set operating range) “M” set by the limit switches 7a and 7b. The restriction hole 71 is opened so that the restriction operation range (limit operation range) “N” is slightly longer.

With this configuration, when the piston portion 60 moves forward and backward to rotate the side marker 2, both the marker cylinder 6 and the regulating member 7 freely swing around the fulcrum pin 62 as a fulcrum, and the operating range "M" is reached. It does not interfere with the operation of the connecting pin 25 inside the bracket.

Since the marker unit 5 is constructed as described above, in the "working posture" of the side marker 2, the actuating member 7c is brought into contact with the limit switch 7a on the front side to support it in the drawing position in a stopped state. Side marker 2
In the "retracted posture", the operating member 7c is brought into contact with the limit switch 7b at the rear side to support the operating member 7c in a standing state in a stopped state.

Since the marker unit 5 is constructed as described above, in the "working posture" of the side marker 2, the operating member 7c (FIGS. 3 and 4) is moved to the limit switch 7 on the front side.
a is contacted with a to support the wire drawing position in a stopped state, and in the "retracted posture" of the side marker 2, the operating member 7c is contacted with the rear limit switch 7b to support the standing position in a stopped state. It has become.

The extension / contraction time of the marker cylinder 6 is set to prevent damage due to overload. Further, the damage due to overload is prevented by the regulation member 7, and the marker 2 is stopped at the approximately proper position by the regulation hole 71 so that the work can be continued.

Further, even if one of the limit switches 7a and 7b fails, the marker cylinder 6 is set so as to be stopped by the expansion and contraction operation for a predetermined time, so that the marker cylinder 6 is prevented from being overloaded. Furthermore, the restriction hole 71 has the upper and lower limits of the side marker 2 at both ends thereof, and the connecting pin 2
5 will be applied and regulated.

As described above, damage due to overload is prevented, and further, the marker 2 is stopped at the proper position by the restriction hole 71, so that the work can be continued.

As described above, the side marker 2 is maintained in the working posture or the retracted posture by the marker unit 5 having the regulating member 7. Therefore, the electric system of the side marker 2 in the middle of the planting work requiring the drawing or the traveling work in which the side marker 2 is stored. Even if a trouble occurs in the plant, it is possible to continue each work without interruption and to complete the planting work as it is without stopping in the middle.

The restricting member 7 includes a fulcrum pin 62 for connecting the marker cylinder 6 and the rotary plate 21 and a connecting pin 2.
It can be installed by fitting it at the time of assembling using 5.

Therefore, the marker unit 5 provided with the regulating member 7 capable of performing the above-described operation is provided with a simple structure without providing the marker cylinder 6 with a complicated and expensive torque limiter mechanism or the like. can do. Reference numeral 59 is a cover that covers the marker unit 5.

Next, the rotation adjusting portion 3 of the marker body 20 according to the present invention will be described with reference to FIGS.

The rotation adjusting portion 3 of the marker body 20 includes a box-frame-shaped mounting holder 30 rotatably fitted in the tip shaft portion of the front arm 2c, a mounting screw 31 of the mounting holder 30,
A rod-shaped marker body 20 (FIG. 8) having a predetermined length, which is mounted and supported by the mounting arm 31 in a hanging posture, and the tip side arm 2c is projected so as to position the mounting holder 30 inward. Front side arm 2 shown in FIG.
A stopper shaft 32 is provided which is eccentrically separated from c and is bent outward to extend to the outside of the mounting holder 30.

Then, as shown in FIG.
The marker body 20 is rotatably fitted and pivotally supported by the stopper shaft 32 to position the attachment holder 30 outside the marker body 20.
A positioning member 9 for adjusting the drawing posture of the switch is provided.

Further, the marker body 20 is fitted in the front side arm 2c in the mounting holder 30 and both ends of the stopper shaft 32 and the mounting holder 30 are locked, and the marker body 20 is spring-loaded in the hanging line direction as shown in FIG. A spring biasing member 33 including a biasing winding spring is provided. Reference numeral 35 is a cotter pin which is provided on the front arm 2c so as to be engageable with and disengageable from the rotation adjusting portion.

Further, as shown in FIGS. 9 and 10, the positioning member 9 has a mounting hole 90 formed at the center of the plate-shaped piece for fitting and inserting into the stopper shaft 32, and slidably fitted into the tip side marker arm 2c. The guide hole 91 to be opened is opened in an arcuate hole extending from the attachment hole 90 to the drawing side and the storage side of the marker body 20 in a range of about 90 ° or more. Also,
On the other side of the mounting hole 90, an operation piece 92 for operating the drawing marker body 20 by rotating the positioning member 9 is extended.

As shown in FIG. 9, an L-shaped bent hook piece 93 is projectingly provided inside the positioning member 9, and a locking portion 95 formed at the tip of the hook piece 93 is formed in the guide hole 91 in a side view. It is installed at the end of the storage side.

The rotation adjusting section 3 configured as described above is in a state where the rotation adjusting section 3 is shown in FIGS. 8 and 11 in the working posture of the side marker 2 as shown in FIGS. When the front side arm 2c is positioned on the drawing posture side of the marker arm 2a indicated by 9 in a solid line, the marker body 20 rotatably supported by the tip side marker arm 2c from the hanging position to the retracted state is The front edge side of the mounting holder 30 is locked to the stopper shaft 32, and the other end of the spring biasing member 33 biases the mounting holder 30 downward in the spring direction.

Accordingly, the engaging portion 95 of the hook piece 93 provided on the positioning member 9 contacts the other side of the mounting holder 30 (the mounting screw 31 in the illustrated example). And the mounting holder 30
Further rotation is blocked by the positioning member 9 with the stopper shaft 32 extending laterally of the front arm 2c as a fulcrum of rotation. As a result, the marker body 20 can be stopped and maintained in the work posture shown by the solid line, and along with the progress of the machine body at the time of planting work, the line drawing of the field scene, which is the planting work reference of the next process, is set to a predetermined depth on its side. You can do it properly.

At this time, for example, in a field having a large drawing resistance on a hard surface, or a field in which many straw debris and weeds are floating or scattered on the ground surface, the marker body is used in the above drawing posture. Since the tip of 20 is deeply drawn in a state substantially orthogonal to the field scene, the drawing resistance is large, and the straw scraps are drawn while the marker body 20 is hooked to form an unclear line. In this case, when the marker body 20 is switched to the retracted posture in which the marker body 20 is rotated rearward with respect to the traveling direction as shown by the dotted line in the figure by stopping the rotation adjuster 3, the marker body 20 is stopped. Since the wire can be drawn at a shallow position such as 20a having a large receding angle, the wire can be drawn even in a hard field scene without a large resistance. In addition, the straw debris can be satisfactorily drawn while allowing it to escape without being significantly dragged.

That is, in the rotation adjustment of the rotation adjusting portion 3 in this case, the mounting holder 30 and the marker body 20 are shaken in the backward direction of the marker body 20 with the operation piece 92 held at the position shown in the figure. While moving the mounting holder 30, the side of the engaging portion 30a (FIG. 11) formed on the end side of the mounting holder 30 is positioned by the positioning member 9
When the engaging parts 95 of the
0 is prevented from being rotated by the spring bias through the locking portion 95, and the marker body 20 can be stopped by a simple operation in the retracted line drawing posture shown by 20a and the state can be maintained.

In order to further raise the marker body 20 so that it does not come into contact with the field, the positioning member 20 is rotated counterclockwise as shown in FIG.
By raising, the marker body 20 can be held at the position (A). Further, as shown in FIG. 13, when the operating piece 92 is rotated counterclockwise to raise the hook piece 93, the hook piece 93 is brought into contact with the lower side of the front side edge portion of the attachment holder 30 to position the marker body 20 at the position (B ) Can be held in the storage position.

Since the marker body 20 has the marker arm 2c on the tip side as a fulcrum and the positioning member 9 is supported by the stopper shaft 32 which is separated from the arm 2c, the rotational force of the marker body 20 is Even if the positioning member 9 is acted via the hook piece 93, the force is not applied.
Since it acts in the direction of pressing the stopper shaft 32, the marker body 20 can be held in the raised position without rotating the positioning member 9.

When the marker unit 5 is operated in the state shown in FIG. 13 to switch the marker arm 2a to the retracted posture, the marker arm 2a is supported compactly as shown in FIG.

At this time, when the front side marker arm 2c is folded to the base side marker arm 2b side in the storage posture by the structure of the connecting portion 4 (FIG. 2) described below, it is shown by the dotted line in FIG. As described above, since the marker body 20 can be supported at a lower position in a compact storage posture along the body, it is possible to prevent obstacles when traveling on the road and do not require a large space for storing the body, It has features such as easy operation.

Next, the connecting portion 4 provided in the middle of the marker arm 2a will be described with reference to FIGS.

The connecting portion 4 is adapted to insert and remove the base side of the front side marker arm 2c into the distal end portion of the base side marker arm 2b made of a pipe having a large diameter. In the state, the front side marker arm 2c
With the adjustment piece 40 fixed to the base side arm 2b, the adjustment screw 42 is inserted into the elongated adjustment hole 41 formed to be substantially parallel to the base side arm 2b. The front side marker arm 2c is fixed to the base side marker arm 2 by being fastened to the mounting piece 43 protruding on the 2b side.
b is supported in a straightened state.

With this structure, the adjustment screw 42 is loosened to adjust and fix the attachment position of the base side arm 2b through the adjustment hole 41, so that the marker body 20 can adjust the horizontal drawing position. Can be done.

Then, the adjusting screw 42 is loosened to bring the front side marker arm 2c out of the base side marker arm 2b, and the front side marker arm 2c is L-shaped upward at the end of the adjusting hole 41 with the adjusting screw 42 as a fulcrum. When the inverted side arm 2c is fastened again with the adjusting screw 42, the side marker 2 can be easily switched to the compact storage posture shown by the chain line in FIG. 1 in the storage posture of the marker body 20. be able to.

The traveling machine body 1 provided with the side markers 2 configured as described above is moved from the retracted posture shown in the front view of FIG. 3 to the marker unit 5 with the marker body 20 in the working posture.
When the marker cylinder 6 is extended (advanced), the planting work can be performed in an orderly manner with the appropriate line spacing between the planted seedlings and the line drawing by the side markers 2 as a reference.

When the planting work of the current planting article is completed and the machine is turned to the next planting article, the marker unit 5 is retracted and the side marker 2 is switched to the retracted posture. However, at this time, since the side marker 2 stands up with its base side as a fulcrum as shown in FIG. 1 and narrows the width of the machine, the aircraft can be smoothly turned, and then the side marker 2 on the other side is moved. It is possible to continuously perform the planting work while switching to the work posture and performing the drawing with the marker body 20 again.

[0049]

As described above, in the side marker device of the transplanter of the present invention, the side marker 2 having the marker body 20 for wire drawing provided at the tip of the marker arm 2a is drawn to the side of the machine. In a transplanter that can be switched between a retracted posture and a non-working storage posture, the marker body 20 can be rotated in the drawing direction to adjust the drawing depth while the side marker 2 is in the working position. The marker body 20 is provided on the marker arm 2a via the rotation adjusting unit 3 that rotates the marker body 20 in the stored posture along the body.

Therefore, it is possible to change the drawing depth of the marker body 20 in the working posture of the side marker 2 and, of course, prevent the marker body 20 from projecting laterally in the retracted posture of the side marker 2 to be compact. Can be stored in.

The rotation adjusting unit 3 is attached to the marker arm 2a.
The marker member 20 is rotatably urged by the urging member 33 in the drawing direction at the tip end of the marker body 20, and a positioning member that can adjust the stop position by the urging of the marker body 20 is provided.

Therefore, it is possible to easily adjust the drawing depth of the marker body 20 and switch to the retracted posture with a simple structure.

Further, the base portion of the marker arm 2a is rotatably provided with respect to the machine body so that it can be switched between a working posture and a retracted posture, and a middle portion of the marker arm 2a is provided so as to be foldable so that the side marker 2 is retracted. In, it is possible to compactly store the marker body 20 at a low position along the body.

[Brief description of drawings]

FIG. 1 is a perspective view of a transplanter equipped with a side marker device.

FIG. 2 is a front view showing a work posture of a side marker.

FIG. 3 is a front view showing a configuration of a marker unit of a side marker.

FIG. 4 is a plan view of FIG.

FIG. 5 is a front view of a positioning member.

FIG. 6 is a plan view showing a configuration of a rotation adjusting portion of a side marker.

FIG. 7 is a front view of the rotation adjusting unit of FIG.

FIG. 8 is a side view of FIG. 7.

9A is a side view of a positioning member, and FIG. 9B is a plan sectional view of FIG. 9A.

FIG. 10 is an exploded perspective view of a rotation adjusting section.

FIG. 11 is a side view showing a hanging state of a side marker.

FIG. 12 is a side view showing a raised state of a side marker.

FIG. 13 is a side view showing a stored state of side markers.

[Explanation of symbols]

1 Traveling Machine (Transplanter) 2 Side Marker 2a Marker Arm 2b Base Side Arm 2c Front Side Arm 20 Marker Body 3 Rotation Adjusting Section 30 Mounting Holder 32 Stopper Shaft 33 Spring Energizing Member (Spring) 4 Connection Section 5 Marker Unit 6 Marker cylinder (marker actuator) 7 Restricting members 7a, 7b Limit switch 9 Positioning member

Claims (3)

[Claims] 1. A transplanter equipped with a side marker 2 provided with a marker body 20 for wire drawing at the tip of a marker arm 2a so that it can be switched between a wire drawing work posture and a non-working storage posture on the side of the machine body. In the working posture of the side marker 2, the marker body 20 is rotated in the drawing direction so that the drawing depth can be adjusted, and in the retracted posture of the side marker 2, the marker body 20 is rotated to the retracted posture along the machine body. A side marker device for a transplanter, in which the marker body 20 is provided on the marker arm 2a via the rotation adjusting section 3. 2. The rotation adjusting section 3 urges the marker body 20 rotatably in the drawing direction by the urging member 33 at the tip of the marker arm 2a, and the stop position by the urging of the marker body 20 is set. The side marker device for implantation according to claim 1, further comprising an adjustable positioning member. 3. The transplantation according to claim 1 or 2, wherein the base of the marker arm 2a is provided so as to be rotatable and switchable with respect to the machine body between a working posture and a retracted posture, and a middle portion of the marker arm 2a is provided so as to be foldable. Side marker device.