JPH07102007B2 - Marker device for paddy field vehicle - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a marker device in a paddy field vehicle, in particular, a riding rice transplanter, a riding direct seeder, and the like, and more particularly, to a structure and an arrangement of a switching control unit thereof.

<Prior art> Generally, a riding rice transplanter is a line that serves as a running reference line for the next process during planting work in order to properly maintain the spacing between planting lines of seedlings and to improve the straightness of the aircraft. It is equipped with a marker that draws on the rice field.

And, conventionally, the marker device has been disclosed in
As shown in Japanese Patent Publication, the marker is moved from the working position that is downwardly extended to the side of the machine body to the non-working position where it is raised and stored, in conjunction with the raising and lowering operation of the planting part, and either By switching the lock member that holds one of the markers in the non-working position with the switching member that can be switched along with the raising and lowering operation of the planting part, by raising and lowering the planting part when turning the machine at the field end. The left and right markers are automatically switched to the work position.

<Problems to be Solved by the Invention> However, in the conventional mechanism as described above, only a work method of sequentially planting one field from one side is assumed, and either left or right can be selected depending on the reciprocating planting work progress direction. The marker was selectively dropped and marking was done on only one side in preparation for the next planting work.

When working in a vast field using a rice transplanter or a seeder, a slight deviation in the straight line of the work vehicle is repeatedly accumulated from one end to the other end of the field, thereby improving the straightness of the planting line at the end. There is a case where the planting work is performed from the center of the field and the planting work is sequentially performed in the left-right direction as shown in FIG. Also, when the approach road and the exit road of the work vehicle are aligned as shown in Fig. 9 or when working in the odd-shaped field of Fig. 10, the planting is started from the central part to improve the work efficiency. I have something to do.

However, in such a planting method, the conventional marker device as described above cannot mark one of the left and right markers because one of the left and right markers does not work, and one side of the field must be planted with no mark. There was an inconvenience.

Further, although these problems can be easily solved by electrically switching the left and right markers, the cost of the switching operation system becomes high and quick repair of failures during work is almost impossible. There is a drawback that.

<Means for Solving Problems> The present invention for solving the problems described above is provided with a marker (22L,
22R) is provided with a control section (27) for switching to selectively operate the work position (B) which is extended down to the side of the machine, and the control section (27) has left and right marker operation wires ( 28)
In the mechanism provided with the left and right actuating bodies (71) that are separately engaged and interlocked with each other, a marker (22L,
22R) engages with the marker operating wire (28) side to interlock the operating body (71) when the operating body (71) and the marker operating wire (28) are extended downward to the working position (B).
It is characterized in that an allowance member (73) is provided for performing engagement / disengagement operation of the engagement by releasing the engagement with.

<Operation> The control unit 27 selectively actuates the marker operating wire 28 by restricting the movement of the left and right actuating bodies 71, thereby allowing the allowance member.
By switching 73, the left and right operation wires 28
Are connected to and disconnected from the left and right actuating bodies 71 in an engaged state or a disengaged state. In the engaged state, one of the left and right markers 22L, 22R can be selectively raised and lowered by a control switching operation, and in the disengaged state, each operation wire 28 is independent of the actuating body 71. The respective markers 22L, 22R can be turned up and down at the same time on the left and right.

<Example> Hereinafter, an example according to the present invention will be described with reference to the drawings.

As shown in FIG. 5, the riding rice transplanter 1 has a traveling machine body 5 supported by front wheels 2 and rear wheels 3, and the traveling machine body 5 connects a front mission case 6 and a rear axle 7. A driver's seat including a seat 10 and a steering wheel 8 located above the frame 9 approximately above the center of gravity of the rice transplanter.
11 is arranged, and an engine 13 is mounted by a front chassis 12 so as to project to the front thereof.

Further, a parallel link mechanism 15 including an upper link 15a and a lower link 15b is connected to the left and right seat frames 9a which are erected on the frame 9 and also serve as seat supporting legs,
The linking mechanism 15 supports the planting part 16 so that it can be raised and lowered. The planting part 16 is attached to the drive case 17, the float 18, the planter case 19, and the planting frame 20 with a mounting stay 20.
The planter 19a has a long seedling stand 21 on which two and a half mat seedlings can be vertically placed and which is movably supported via a, and a planter 19a arranged in a planter case 19.

Further, a marker 22 is rotatably supported by a pivot pin b on each of the left and right stays 20a for supporting the seedling placing table 21, and the left and right markers 22L and 22R are, as shown in detail in FIG.
The non-working position A (solid line) stored on the back surface of the seedling stand 21 and the working position B (chain line) in which the bent tip a of the planting portion 16 overhangs and contacts the field scene are switched, Moreover, the markers 22L and 22R are urged to reach the working position B by the return spring 23 stretched between the markers 22L and 22R.

In addition, a hydraulic cylinder device 26 is interposed between the front mission case 6 and the lift arm 25 fixed to the upper link 15a at the center of the traveling machine body 5 in the width direction.
The planting section 16 is controlled to move up and down by the expansion and contraction of the cylinder device 26. A control unit 27 for switching the marker device according to the present invention is installed in a portion between the upper ends of the left and right seat frames 9a behind the seat 10, that is, an upper portion of the traveling machine body 5.

The inner wire ends of the operation wires 28 are fixed below the markers 22L and 22R, and the other ends of the operation wires 28 are locked to pins 67a in the control unit 27, which will be described later. When the planting part 16 descends, the spring 23
When the marker 22L or 22R falls to the operating state of B when it is loosened in the biasing direction of the
The structure is such that the marker 22L or 22R pivotally stands up by pulling 28.

The control unit 27 is attached to the upper cover 35 of the driver's seat 11 based on a channel-shaped mounting base 33 having mounting legs 33a projecting upward at the left and right front and rear ends.
The side wall 33b of the mounting base 33 between a and 33a is formed with a sliding groove 37 formed of a slit in the front-rear direction over substantially the entire length, and the rear end of the left and right side walls 33b has a U-shaped side receiving groove. 39 is installed concentrically, and the bottom 33c of the mounting base 33 is
An elongated hole 33d is provided on the rear end side at the center position in the width direction, and pins 41 and 43 vertically penetrating are provided on the front and front end positions thereof, respectively.

At the center position on the bottom surface side of the mounting base 33, a pin 45a accommodated in the elongated hole 33d is provided at the rear end, and a pin 45b for operating lever shaft support is provided upright at the front end. A restriction rod 45 is provided in the front-rear direction in which long holes 45c and 45d for accommodating are cut. A plate spring 45f is provided on a downward plate-like projection 45e at a position near the rear of the elongated hole 45d of the restriction rod 45.
The operating lever 47 urges a boss 47a fitted to the pin 45b at its rear end, and further has an operating rod 47c at the rear of the boss 47a.

In addition, a switching plate 49 which is long in the front-rear direction is provided between the operating rod 47c and the rear end of the bottom portion 33c of the mounting base 33, and the switching plate 49 is horizontal to the upper protruding end of the pin 43 via a boss 49a at the front end. It is rotatably supported and has a long hole 49b in the front-rear direction at the rear end.
And an isosceles triangular guide hole 49c having a vertex in the front is formed in the center, and the pin 47b is inserted into the guide hole 49c from above.

At the central portion above the bottom portion 33c in the mounting base 33, there is provided a regulating plate 51 formed of a T-shaped plate having a projecting end projecting to the left and right wider than the mounting base side wall 33b and a projecting end projecting to the front center thereof. A pin 51a projecting vertically is provided at the tip of the front projecting end, and a boss 51b having a vertical through hole is fixedly projectingly provided on the central lower surface of the left and right projecting ends.

The downward protruding end of the pin 51a is inserted into the long hole 49b at the rear end of the switching plate 49, and the rear boss 51b is pinched from above and below at the front end of the rotating plate 53.
The protruding end of 41 is pivotally supported so as to be horizontally rotatable.

The rotating plate 53 has a vertical pin 53a at the rear end.
It is composed of two upper and lower plates 53b, 53c which are fixed at a constant interval in the front-rear direction, and the boss 51b of the regulation plate 51 is housed between the front ends of the plates 53b, 53c, and the pins 41 are formed together.
Is rotatably supported in the left-right direction. On the bottom surface of the lower plate 53c of the rotating plate 53, there is provided a guide surface 53d having a U-shaped groove in a rearward V-shaped trough, and an L-shaped guide metal 53e is integrally formed in a side view. The pin 45a is inserted into the bottom portion of the guide surface 53d by the forward pulling operation of the operating lever 47, whereby the rotating plate 53 is placed in the front-back direction along the center of the mounting base 33.

Between the plates 53b, 53c is inserted a restriction rod 55 whose left and right ends are accommodated in a receiving groove 39 in the front of the mounting base 33 so as to be movable left and right, and a U-shaped member facing rearward in a side view is provided in the rear center of the restriction rod 55. An engaging metal fitting 57 having a U shape or a U shape is fixed. Further, a rearward facing U-shaped cutout groove 57a is formed in the center of the engaging metal fitting 57 in the left-right direction, and a pin 53a is constantly inserted in the engagement groove 57a, and a rear end of the rotary plate 53 is formed. The regulating rod 55 is also moved left and right when the right and left are rotated. The right and left ends of the regulating rod 55 are either one of the left and right ends or both ends at the same time depending on the rotating posture of the rotating plate 53.
The side wall 33b of 33 has a length protruding from the side surface.

Reference numeral 59 denotes a spring whose front and rear ends are engaged with the pin 51a and the pin 53a. The spring 59 corresponds to each posture of the regulation plate 51 that is rotated right (solid line in FIG. 2) and rotated left (imaginary line in FIG. 2). The left / right rotation posture of the rotation plate 53 is selectively determined depending on whether the center of the rotation angle is on the left or right of the rotation / bend fulcrum of the pin 41.

In addition, the rotation posture with the pin 41 of the regulation plate 51 as a fulcrum,
It is determined to be left or right depending on the left / right turning operation of the operation lever 47 about the pin 45b and the turning posture about the pin 43 of the switching plate 49 by the operation. Further, when the operation lever 47 is pulled out forward within the allowable range of the long holes 33d, 45c, 45d, 49b and the guide hole 49c, the pin 43 and the leaf spring 45f are pulled out.
Is locked by the pin 45a as described above.
And the control rod 55 is in a neutral position.

In addition, there may be a case where the regulating surface 71b of either the left or right actuating body 71, which will be described later, comes into contact with either the left or right protruding end of the regulating plate 51 during backward movement, so that the regulating surface 71b is rotated left or right. By the way, the triangular guide hole of the switching plate 49
The switching plate 49c is operated by a return spring 58 that allows the operation lever 47 to move forward and always urges the operation lever 47 in the left-right direction at the front end of the control rod 45.
It functions to allow the operating lever 47 to be maintained in a neutral state regardless of the rotational posture of the.

Next, the operation system in the control unit 27 of the operation wire 28 will be described. As shown in FIGS. 5 and 3, the wire ends 28c of the inner wire 28b are vertically aligned with the beams 9b on both the left and right sides of the frame 9 by the axis 69. It is connected to the upper end of an interlocking lever 67, which is pivotally supported so as to be rotatable in the front-rear direction, via a pin 67a, and the lower end of the connecting lever 67 is the base end of a lift arm 25 that moves up and down the planting part 16. The rod 63 is connected to the front. A long hole 63b in the front-rear direction is formed in the rod end 63a of the rod 63, the interlocking lever 67 is connected through a pin 70 inserted therethrough, and the long hole 63b is formed in the pin 67a.
Also, the interlocking lever 67 allows the planting portion 16 to descend, that is, the lift arm 25 to pivot downward, in a state where the interlocking lever 67 is locked in the marker non-acting (standing) posture.

On the other hand, on both sides of the mounting base 33, actuating bodies 71 made of deformed plates as shown in FIG. 1 are mounted so as to be slidable forward and backward, and on the inner surface of each working body 71, a sliding groove on the mounting base side is formed. Two guide pins 71e, which are inserted into the front and the rear, are projected from the mounting base 37, and the guide pins 71e are regulated by the sliding groove 37 so that the guide base 71e slides forward and backward by a constant stroke while holding the operating body 71 in the mounting base. It is attached to 33.

The rear side of the operating body 71 has a vertical width that is substantially the same as or slightly smaller than the side wall 33b of the mounting base 33, and the upper surface thereof forms a lower surface 71a having substantially the same height as the upper end surface of the side wall 33b. At the front end of 71a, a regulation surface 7 that stands up at a substantially right angle
Forming 1b. A ring-shaped boss 71k is attached to the outer surface in front of the restriction surface 71b in two steps vertically and coaxially with each other in the vertical direction. The boss 71k is provided with an allowance member 73 formed of a pin bent in an L shape. It can be inserted vertically.

When inserting the allowance member 73 into the boss 71k,
A spring receiver 73c and a spring 73b formed of a C-shaped ring or the like are provided on the peripheral surface of the permitting member 73 downwardly during 1k, and the permitting member 73 is always urged downward. On the other hand, a locking pin 73a is projectingly provided on the upper peripheral surface of the allowance member 73, and the locking pin 73a is a groove-shaped receiving portion 71g formed at a position near the upper end surface of the actuating body 33 or the upper end surface. The mechanism is such that the height of the permitting member 73 can be adjusted and set in two steps, high and low, by being locked to any of the groove-shaped receiving portions 71i formed at a high position on the receiving tool 71h attached to the.

Further, the front end portion of the actuating body 71 is formed with an extending portion 71c that projects downward and extends forward, and is lowered to the rear end surface of the extending portion 71c and the lower portion (the locking pin 73a is engaged with the receiving portion 71g. The hooking pin 67a on the interlocking lever 67 protrudes inward between the lower end of the permitting member 73 (in a stopped state), and in this state (the solid line in FIG. 2 and the state in FIG. 3), Actuator 71 and wire end 28
c are mutually regulated and move back and forth together, or the actuator 7
If 1 is in the locked state, the operation wire 28 is also in the locked state. Alternatively, the end of the operation wire 28 may be detoured from the front and locked to the pin 70 at the lower end of the interlocking lever 67.

On the other hand, in the upper state (state of the imaginary line in FIG. 2) in which the allowance member 73 is pulled upward against the spring 73b and rotated by a certain angle to engage the engagement pin 73a with the receiving portion 71i, The lower end of the member 73 is not at the rear position of the pin 67a of the interlocking lever 67, and is freely pulled rearward according to the urging direction of the spring 23 provided at the base end of the marker without being restricted by the actuation body 71, and the marker 22L Or 22R automatically falls to the active state.

Each of the left and right actuating bodies 71 with respect to the mounting base 33 is first set to the left and right by selectively turning the switching plate 49 in the left and right directions by operating the left and right allowance members 73 in the lower stage to operate the left and right operation of the operating lever 47. When the regulating rod 55 is projected to either the left or right side, the rear end of the actuating body 71 comes into contact with the projecting regulating rod 55 and cannot be retracted into a locked state, and the actuating body on the other side is locked.
Only 71 moves back and forth, and only one of the markers 22L or 22R corresponding to this is tilted and rotated. For example, when the regulating plate 51 is in the solid line state as shown in FIG. 2, when the planting portion 16 is lowered, the actuating body 71 on the upper side (left side) in the figure moves backward,
At the time of this backward movement, the restriction plate 5 b
1 is arranged like a chain line, the spring 59 is placed on the opposite side of the fulcrum 41 (upper side in the drawing), and the rotating plate 53 and the regulating rod 5
5 is urged to move upward, but the tip of the regulating rod 55 is in contact with the side surface of the actuation body 71 and cannot be switched.

When the planting portion 16 is moved upward and the actuation body 71 is returned to the forward direction, the restriction rod 55 moves to the position shown by the upper chain line in the figure. From the state of the chain line position, the operating body 71 at the bottom of the figure moves backward, and thereafter the automatic switching is repeated alternately in sequence.

When the operation lever 47 and the regulating rod 45 are pulled out and moved forward while the planting portion 16 is raised, the rotating plate 53 and the regulating rod 55 in the mounting base 33 move to the left and right as shown in FIG. The symmetrical neutral position, the left and right actuating members 71, 71 are locked so that they cannot slide backward, and the left and right markers 22
L and 22R are also locked in the upright state regardless of the elevation of the planting section 16.

Further, when the left and right markers 22L and 22R are undulated at the same time and marking is performed on both the left and right sides of the work vehicle, the planting section 16 is raised to bring the markers 22L and 22R to the upright state and the seat 1 of the driver's seat 11
By rotating 0, the left and right allowance members 73 are pulled up from the operation window 35a formed in the upper cover 35, and the locking pins 73a are both set in the upper receiving portion 71i. Pin 6 with this set
The lower end of the allowance member 73 that was behind 7a is located above,
The pin 67a is in a state where it can freely move backward, and when the planting portion 16 is lowered next, the markers 22L and 22R both lie down to the working posture due to the backward rotation of the interlocking lever 67, and the planting portion 16 is moved. Rises to a non-working posture.

As shown in the drawing, a spring 75 is stretched between the pin 67a and the engaging portion 71d formed by bending the front end of the extending portion 71c of the actuation body 71. 71
It is a spring for returning to the original position.

That is, when the pin 67a is set in a position rearward of the allowance member 73 due to an erroneous operation when setting the lower stage of the allowance member 73,
In order to prevent damage to the operating body 71 and the interlocking lever 67 due to the forward rotation of the interlocking lever 67, a sliding groove 37 on the mounting base side is provided.
Is formed to extend further forward than the required front limit position of the front guide pin 71e so as to have a space. Therefore, when the planting portion 16 is lifted up to the uppermost stage, there is a play between the front pin 71e and the front end of the sliding groove 37 by the amount of the above clearance, and the forward displacement of the operating body 71 causes There is a risk that the lower set of the allowance member 73 will be performed in front of the pin 67a. In order to solve such a problem, the spring 75 always returns the operating body 71 to the rear fixed position and sets the allowance member 73 in the lower stage. Further, in order to prevent these erroneous operations as much as possible, the operation window 35a of the upper cover 35 is set as small as possible so that the permitting member 73 can be operated only when the planting portion 16 is lifted up.

79 is a switch mounting seat horizontally installed at the rear end of the mounting base 33,
Switches 81, 81 for detecting left and right movements of the rotary plate 53 are attached to the lower surface of the switch 81. In front of each switch 81, the switches 81, 81 project to both sides of the pin 53a at the tip of the rotary plate 53, and their left and right positions ( That is, detection rods 81a, 81a for detecting which of the left and right markers is in operation are provided. This detection rod 81a activates either the left or right switch 81 to light up and display the left and right marker selection display lamps 83L and 83R on the operation panel 83 shown in FIG. 7, and the pin 53a is in the neutral position. At this time, the left and right lamps 83L and 83R are turned off.

In the display section on the operation panel 83, other fuel indicator 83a, a seedling supply display lamp 83b for displaying a shortage of seedlings on the seedling stand, and a row number monitor 83c for indicating the number of rows to be planted are arranged. Various switch operating parts 83e and an engine height operating lever 83a are arranged at the left and right positions of the steering handle 85 at the lower center. Further, a fuel supply hole 83f to the fuel tank is provided at the center of the upper part.

Although the L-shaped pin as the permitting member 73 can be set up and down in the above-described embodiment, the present invention is not limited to the above-described configuration. For example, the operation wire 28 can be attached to and detached from the operating body 71. Any type of mechanism can be used as long as it is a mechanism that can connect and disconnect the operating body 71 and the wire 28 as necessary, such as a hook-shaped one that can be freely connected or one that engages and disengages the upper portion of the interlocking lever 67 with the operating body 71. It doesn't matter.

<Effects of the Invention> Since the present invention is configured as described above, by adding a double drop mechanism capable of simultaneously using the left and right markers to the marker control mechanism that selectively switches the working postures of the left and right markers, When performing planting or sowing work from the center in fields, irregular fields, etc., marking on both sides of the work vehicle is possible, and by accurately holding the first planting article, the planting article on the left and right ends can be misaligned. Has an advantage that the work can be carried out with high efficiency.

In addition, the cost is lower than that of switching control by the electric system, and it is easy to deal with a failure, and since a disconnection mechanism is provided between the operating body and the operation wire, the mechanism and the release and reset operation are performed. There is a feature that you can easily do.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is an exploded perspective view of a marker control unit, FIG. 2 is a plan view showing the structure and working state of the marker control unit, and FIG. 3 is a partial sectional side view thereof. , 4th
The figure shows the main part extraction plan view showing the operating state of the control part, Fig. 5,
FIG. 6 is a side view of a rice transplanter equipped with the device of the present invention and a rear view of a marker portion, FIG. 7 is a rear view showing an example of a driver's seat operation panel, and FIGS. 8 to 10 use the device of the present invention. It is explanatory drawing which shows the work progress state in a case. 16: Implantation part, 22L, 22R: Marker, 27: Control part 28: Operation wire, 71: Actuator, 73: Allowable member

Claims (1)

[Claims] 1. A switching operation for interlocking with the raising and lowering operation of a working section so as to selectively actuate either the left or right marker (22L, 22R) to a working position (B) which is extended down to the side of the machine body. In the mechanism provided with a control section (27), the control section (27) is provided with the left and right actuating bodies (71) which are engaged with the left and right marker operating wires (28) separately and interlock with each other. (71)
The marker (22L, 22R) engages with the marker operating wire (28) side when the markers (22L, 22R) are extended downward to the work position (B), and interlocks the operating body (71) with the operating body (71). A marker device for a paddy work vehicle provided with an allowance member (73) for performing a connecting / disconnecting operation of the engagement by releasing the engagement with the marker operation wire (28).