JPH074084B2 - Marker device for paddy field vehicle - Google Patents

Description

TECHNICAL FIELD The present invention relates to a marker device in a paddy field vehicle, particularly a passenger rice transplanter, and more particularly to a structure of a switching lock lever of the marker device.

(B) Conventional technology Generally, passenger rice transplanters properly maintain the spacing between planting rows of seedlings,
Also, in order to improve the straightness of the aircraft, during planting work,
It is equipped with a marker that draws a line on the rice field that will be the reference line for the next step.

Conventionally, the marker device is used to move the marker from a working position in which the marker is lowered and laterally extended to a non-working position in which the marker is raised, as disclosed in Japanese Utility Model Laid-Open No. 59-81307, for example. The mechanical or electrical locking member that interlocks with the operation of the hydraulic cylinder device that raises and lowers the attached part and that holds one of the left and right markers in the non-working position alternates left and right with the operation of the hydraulic cylinder device. The left and right markers are automatically switched to the working position by moving up and down the planting part when the machine is turning at the field end.

Further, the conventional marker device has a switching lever (or button) for selecting which of the left and right markers is switched to a working position at the start of work, and a lock lever for storing both markers in a non-working position when the markers are not used. (Or button) was installed separately.

(C) Problems to be solved by the invention Therefore, in the conventional marker device, it is necessary to release the lock lever and then switch the switching lever to either one at the time of starting the work, which makes the operation troublesome. In addition to being a cause of erroneous operation, the structure is further complicated, which causes a cost increase.

Therefore, the present invention switches the working position of the marker by swinging one switching lock lever in the left-right direction,
Another object of the present invention is to solve the above problems by storing and locking the marker in a non-working position by sliding it in the front-back direction.

(D) Means for Solving the Problem The present invention has been made in view of the above circumstances. For example, as shown in FIG. 1 to FIG. 4, the switching control unit 27 of the marker device has a working unit (planting unit). The left and right actuating members 31L and 31R, which are interlocked with the raising and lowering of the attachment part 16) and are respectively connected to the left and right markers (22L and 27R), the switching member 32 which is switched by the movement of these actuating members, and the switching member 32. It consists of a lock member 40 whose urging direction is switched to move to a position that regulates the movement of one of the left and right actuating bodies, and alternates the left or right marker between the working position and the non-working position as the working unit moves up and down. It is configured to switch to. Further, a switching lock lever 42 is installed in the switching control unit 27 so as to be swingable right and left and slidable in the front-rear direction, and the lock lever is connected to the switching member 32 through an elongated hole 42e to lock. The switching member 32 is switched by swinging the lever 42 left and right, and the switching member 32 is switched by the sliding operation of the lock lever 42 in the front-rear direction.
It is characterized in that it is configured to lock at a neutral position in which it is biased to a position where it engages with both R.

(E) Operation Based on the above-described configuration, at the start of work, the worker swings the switching lock lever 42 to the marker side, for example, the left side, which is in the working position, with the working portion raised. Then, the switching member 32 is switched to lock the locking member 40 so that the non-working position side, for example, the right actuating body 31R cannot move backward. In this state, when the working part is lowered, the left and right actuating members 31L and 31R try to move rearward in conjunction with this, but the movement of the other (right) actuating member 31R is restricted by the lock member 40, and one ( Only the left actuating body 31L moves, and one (left) marker falls to the working position. At this time, the switching member 32 is switched by the movement of the operating body 31L to change the bias of the lock member 40, and the lock member 40 contacts the side surface of one operating body 31L. Then, when the working section is raised at the time of turning the machine body at the end of the field, the one operating body 31L moves forward in conjunction with this, and at the same time, the marker at the working position also rises to the non-working position. At this time, when the actuating body 31L moves forward to a predetermined position, the lock member 40 whose urging direction is changed changes its direction.
It is switched so as to regulate the rearward movement of 31L. Also,
By switching the switching member 32, the lock lever 42 is switched so as to face the marker side (right side) to be operated next time. Then, when the working section descends again, one side (left)
Therefore, one of the markers is held at the non-working position, and the other (right) working body 31R moves so that only the other marker moves down to the working position.

When both the left and right markers are stored in the non-working position near the end of work, the switching lock lever 42 is pushed forward in the neutral position at the raised position of the working unit. Then, the switching member 32 is locked in the neutral position, that is, the position in which the lock member 40 is urged so as to restrict the movement of both the left and right actuating bodies 31L, 31R, and both markers are held in the non-working position.

(F) Example Hereinafter, an example according to the present invention will be described with reference to the drawings.

As shown in FIG. 8, 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 11 including a rotating seat 10 and a steering wheel 8 is disposed above the frame 9, and is located substantially above the center of gravity of the rice transplanter. An engine 13 is mounted on the chassis 12. Further, a parallel link mechanism 15 composed of an upper link 15a and a lower link 15b is connected to the left and right seat frames 9a standing upright on the frame 9 and also serving as seat supporting legs, and the planting portion 16 is formed by the link mechanism 15. It is supported so that it can be raised and lowered. The planting section 16 is supported by the drive case 17, the float 18, the planter case 19, and the planting frame 20 so as to be movable in the left-right direction via a mounting stay 20a, and has a length capable of placing two and a half mat seedlings vertically. It has a scale seedling stand 21 and planters 19a arranged in each planter case 19. Further, markers 22 are rotatably supported on the left and right stays 20a for supporting the seedling stand 21, and the left and right markers 22L and 22R are the rear surfaces of the seedling stand 21 as shown in detail in FIG. Non-working position A stored in
(Solid line) and the bent tip a of the planting part 16 sideways are switched to the working position B (chain line) where the tip a comes into contact with the field scene, and these markers 22L and 22R are aligned with the planting frame 20. It is urged to reach the working position B by a return spring 23 stretched between the two. In addition, the front mission case 6 and the upper ring at the central portion in the width direction of the traveling body 5
A hydraulic cylinder device 26 is interposed between the hydraulic cylinder device 26 and the bracket 25 fixed to the fixing member 15a, and the expansion and contraction of the cylinder device 26 controls the planting section 16 to move up and down. In addition, the rear seat frames 9a, 9a and the front seat frames 9b, 9b have first
As shown in the figure, a seat cover 29 is fixed, and a boss 29d is fixed to a central portion of the seat cover 29 via a bracket 29c. Further, a rotary frame 28 is rotatably supported on the boss 29d on a horizontal plane via a fulcrum jig 28a, and a pin 28c installed on the front part of the rotary frame 28 via a bracket 28b. The rotating sheet 10 is supported in the vertical direction, that is, it can be tilted. Furthermore,
On the bracket 29c of the seat cover 29, a lock lever 34 bent into an L-shape is slidable in the machine front-rear direction, and a recessed hole of the jig 28a is formed through a through hole formed in the boss 29d by the spring 14. The lock lever 34 is provided with an L-shaped grip portion 34a protruding toward the front of the seat cover 29 and extending. And
A switching control unit 27 of the marker device according to the present invention is installed in a portion between 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. As shown in FIGS. 1 to 6, the switching control unit 27 has a base plate 30 fixed by bolts over the notch 29a of the seat cover 29, and the base plate 30 is further provided. Left and right plates 30L and 30R extending in the vertical direction are integrally formed with each other.
Further, long holes 30a are formed in the plates 30L and 31R, and left and right actuating members 31L and 3L are formed in the long holes 30a.
1R is guided slidably in the vertical direction through pins 31a, 31a fixed to them, and notches 31c, 31c are formed on the upper surface of the actuating body 31 ... Has been formed. Further, a pin 30C is fixedly provided downward in the center of the base plate 30, and a switching plate 32 is swingably supported by the boss 32b on the pin 30C. The switching plate 32 has protrusions 32l, 32r protruding in the left-right direction and protrusions 32a protruding in the front direction.
2r are placed on or close to the rear surfaces of the notches 31c and 31c of the actuating body 31, respectively, and a long pin 33 is fixed to the front projecting piece 32a. A switching arm 35 is swingably supported on the pin 30C so as to sandwich the switching plate boss 32b, and the switching arm 35 has two plates 35a, 35b and a long plate fixed to the tips of these plates. It has a pin 36. Further, the switching springs 37, 37 are provided between the pin 36 and the pin 33 at the upper end and the lower end thereof, respectively.
And the spring 37 is provided with a switching plate 32.
By moving the pin 33 in the left-right direction based on the above, the switching arm 35 is switched to the left-right switching position over the pin 36. Also, the left and right brackets 39L,
39R is fixed, and further, a long lock pin 40 is slidably supported in the lateral direction by penetrating through the holes formed in these brackets. , 31R can abut on the rear end. Further, plates 41a and 41b are fixed to the upper and lower surfaces of the lock pin 40, and the plates 41 ... Are connected to the pins 36, and the pins 36 form the long holes 30f of the base plate 30. It penetrates and projects upward. A pin 30D is fixedly provided on the rear portion of the base plate 30 so as to project upward, and a switching lock lever 42 is swingably and slidably supported on the pin 30D by a long hole 42a formed therein. ing. The switching lock lever 42 has a bent operation portion 42b at its rear end, the pin 33 is connected to the tip end through an elongated hole 42e, and the rear end is engaged with the pin 36 at the tip. A guide plate 44 having a divergent guide portion 44a that can be fitted is fixed. A plate 42d extending in the vertical direction is fixed to the lower surface of the rear end of the switching lock lever 42, and an engaging member 43 made of a leaf spring is fixed to the plate 42d. With the movement of 42 in the seat 10 direction, the engaging member 43 can be engaged with the pin 30D while being engaged with the notch groove 30e formed in the base plate 30.

On the other hand, the shaft 45 is bridged across the left and right frames 9a, 9a, and the upper link 15a of the link mechanism 15 is pivotally supported by the shaft 45. Further, in the vicinity of the shaft 45, the left and right frames 9
Brackets 46 are fixed to the a and 9a, respectively, and a shaft 47 is bridged across the tip portions of the brackets 46. And the operation arms 49L and 49R are rotatably supported by inserting the bosses 49a and 49a into the shaft 47, and the arms 49 ... consist of vertically extending plates 49b and 49c and a lower plate 49c. A connecting piece 50 is pivotally supported at the tip of the rod, and the connecting piece 50 is secured by a nut 51 to prevent the rod from
52 is slidably guided, and the other end of the rod 52 is pivotally supported and connected to a plate 55 fixed to the base end of the upper link 15a. On the other hand, a cutout groove 31d that opens downward is formed on the front lower surface of the left and right actuating bodies 31L, 31R, and the cutout groove 31d is connected to the inner wire connected to the tip of the upper plate 49b of the operation arm. The pin 56 is engaged. As shown in FIG. 7, the other end of the inner wire 57a is connected to the left and right markers 22L and 22R, respectively, and one end of the outer wire 57b is connected to the seat frame 9a.
The other end is fixed to the stay 20a near the marker pivot pin b.

Since the present embodiment has the above-described configuration, the driver pulls the lock lever 34 forward to release the lock while sitting on the rotating seat 10 before starting the planting work, and rotates the seat backward. In this state, first of all, the left or right marker 22L,
In order to select whether to lower 22R to the working position, the switching lock lever 42 is pushed backward, the plate 42d thereof is removed from the switching groove 30e, and the lock is released. In this state, the switching lock lever 42 is oscillated in the clockwise direction as shown in FIG. 4, for example, on the center of the field, that is, on the side where a marker is drawn, so that the switching plate 32 is moved through the slot 42e and the pin 33. Rotate clockwise. Then, the spring 37 is pulled rightward, the arm 35 is rotated counterclockwise via the pin 36, and the lock pin 40 is projected rightward. In this state, when the rotating seat 10 is locked at the front position and the planting portion 16 is lowered, the plate 55 is moved along with the lowering of the upper link 15a.
Left and right actuators 31L, 31R via rod 52 and actuating arm 49
Moves to the rear, but the right operating body 31R is restricted by the lock pin 40 to prevent its movement, and only the left operating body 31L moves, whereby only the left marker 22L is lowered to the work position B. At this time, as shown in FIG. 5, the left operating body 31L
The switching plate 32 is engaged with the cutout portion 31c of the actuating body 31L to rotate, and the pin 33 is moved to move the spring 3
Change the biasing direction of 7 and change lock arm 42
Rock counterclockwise. Further, by changing the biasing direction of the spring 37, the biasing direction is changed so that the lock pin 40 also projects to the left, but the rear end portion of the left actuating body 31L has already passed the lock pin position. The lock pin 40 contacts the side surface of the left operating body 31L. In this state, that is, when the planting unit 16 is lowered, the float 18 is located on the rice field, and the unplanted side marker, for example, the left marker 22L is in the working position B, the riding rice transplanter 1 performs the planting work. Started and planter 19a
Scraped off the seedlings on the seedling stand 21 and planted them on the rice field.
Marker 22L draws a line on the field so that it will become the running reference line for the next planting process.

When the rice transplanter 1 completes the one-step planting work and reaches the end of the field, the hydraulic cylinder device 26 is turned to rotate the rice transplanter 1.
To extend the planting section 16. Then, in conjunction with the upward rotation of the upper link 15a accompanying the rise of the planting portion 16, the working side, that is, the left operation arm 49L is rotated via the plate 55, the rod 52, the nut 51, and the connecting piece 50. Further, the marker 22L in the working position B is stored in the non-working position A via the wire 51a. Further, based on the rotation of the operating arm 49L, the left operating body 31L slides in the forward direction of the machine body (rightward in FIGS. 1 and 3) via the connecting pin 56 and the notch groove 31d.
In this state, the lock pin 40 is biased leftward by the spring 37, and the rear end portion of the left operating body 31L is locked by the lock pin 4
When it exceeds 0, the lock pin 40 projects (see FIG. 6) to prevent the left operating body 31L from sliding rearward of the machine body. At this time, the right actuating body 31R is prevented from sliding backward by the lock pin 40 until the lock pin 40 projects leftward after the elbow of the left actuating body 31L is released, and therefore the right marker 22R. Is held in the non-working position, and the right operating arm 49R is also held in the raised position.
The movement of is absorbed by the rod 52 sliding in the hole of the connecting piece 50.

Then, the turning of the rice transplanter 1 is completed, and the planting unit 16 is lowered to restart the planting work. Then, as the upper link 15a descends, the left and right operating arms 49 also rotate counterclockwise in FIG. 1 via the plate 55 and the rod 52, but the left operating body 31
When L moves slightly rearward, its movement is blocked by the lock pin 40, the left operating arm 49L remains in that position, and the left marker 22L is held in the non-working position A.
On the other hand, when the right actuation body 31R moves rearward of the machine body based on the rotation of the right actuation arm 49R, the notch 31c abuts the left protrusion 32r of the switching plate 32, and the plate 32 is centered around the pin 30C. Fig. 6 Rotate counterclockwise. Then, the pin 33 provided on the front projecting piece 32a of the switching plate 32 largely moves to the left, and the tension spring 37 stretched between the pin 36 and the pin 36 crosses the pivot pin 30C, that is, a thought point. Beyond, the switching arm 35 is urged clockwise around the pin 30C. As a result, the lock pin 40 is also urged to the left via the pin 36 and the plates 41a and 41b, but in this state,
Since the rear end portion of the right actuation body 31R has already passed through the pin 40 portion, the tip end portion of the pin 40 is prevented from coming into contact with the side surface of the right actuation body 31R and protruding rightward, and the left actuation body 31R. 31L still remains locked to the lock pin 40.
Then, the right actuation body 31R moves rearward as the planting section descends, so that the right marker 22R is set to the work position B projecting to the side of the planting section 16 via the wire 57a.

In this way, the switching lock lever 42
After selecting either L or 22R, as the planting section 16 is moved up and down, the markers on the non-planted side are automatically switched alternately so as to fall to the work position B. At this time, the switching lock lever 42 rotates about the pin 30D by the lateral movement of the pin 33 based on the swing of the switching plate 32.
In order to indicate which marker is to be operated next in the state where the robot is raised, the operating portion 42b is positioned so as to indicate the side of the operating body that moves along with the lowering of the planting portion, that is, the side of the marker that becomes the working position B. (See FIG. 4).

Then, when the rice transplanter 1 reaches the final stage of the planting work and is in a state where it cannot be lowered by the ridges or the like, the planting unit 16
In a state in which the driver is raised, the driver sits on the rotating seat 10 and rotates the seat backward,
Use to move the switching lock lever 42 to the center position and push it further forward of the machine (see FIG. 2). Then the plate
42d engages with the notch groove 30e to prevent the lever 42 from moving left and right, and the engaging member 43 engages with the pin 30D to be positioned at the pushing position. And in this state, the pin 33 is a long hole.
The switching plate 32 is at the center while sliding along 42e, and therefore the switching plate 32 is at the neutral position, and the spring 37 is provided with the lock pin so that the lock pin 40 is in a position to restrict the left and right actuating members 31L and 31R. It is held in a biased position. Further, even if the left and right actuating members 31L and 31R are not regulated by the lock pin 40, the switching plate 32 is held at the neutral position, and the left and right projecting pieces 32l and 32r are cutout portions of the left and right actuating members 31L and 31R. 31c
To restrict the movement of both actuating bodies and prevent the marker from reaching the working position. Further, the guide portion 44a of the guide plate 44
The pin 36 is restricted to the center position by the
The lock pin 40 is forcibly placed in the neutral position together with
In the neutral position, the lock pin 40 prevents the left and right actuating members 31L and 31R from moving rearward. As a result, even if the planting portion 16 is lowered, both actuating members 31L and 31R are engaged with the switching plate 32 and / or the lock pin 40 and are prevented from moving, and the left and right markers 22L and 22L are protected by the double safety mechanism. 22R is held in the non-working position A.

Further, as shown in FIGS. 9 and 10, the left and right limit switches 59L and 59R are installed on the base plate 30, and the operating levers 59a and 59a of these limit switches are configured to face the left and right switching positions of the pin 36. Together with these limit switches, the left and right display lamps on the operation panel 60 of the driver's seat 11
It may be configured to connect to 61.

According to the embodiment, when the markers 22L and 22R are in operation, the lever 59a of the left and right limit switches 59L and 59R is attached to the pin 36.
And the left and right display lamps 61 alternately light up to display the markers on the working side, and when both markers are locked in the non-working position, the lever 5 of both limit switches 59L, 59R
9a does not come into contact with the pin 36, both indicator lamps 61 are extinguished, notifying the driver that the marker is not in use.

In addition, the above-mentioned embodiment explained the riding rice transplanter,
Of course, the marker device may be used for other paddy field work vehicles such as a flooded paddy soil seeder. Further, although the line drawing marker has been described, it can be similarly used for a trace marker that instructs to follow the seedling planted last time.

(G) Effect of the Invention As described above, according to the present invention, it is possible to selectively operate which side of the left and right markers 22L, 22R is to be started by one switching lock lever 42, and both markers are not operated. Since it can be stored and locked in the position A, the operator operates the switching lock lever 42 to either the right or left swing position at the start of the work, and during the subsequent work, only the marker on the proper side is in the work position. It is automatically switched to B, and it suffices to lock the lock lever 42 by sliding the lock lever 42 in the front-back direction near the end of the work, the operation is extremely simple, and the planting seedlings can be pulled down by mistake. Problems can be prevented, and the structure can be simplified to reduce costs.

In addition, based on the forward / backward operation of the switching lock lever 42,
The lock member 40 is urged to a position that restricts the movement of the left and right operating bodies 31L and 31R with the switching member 32 at the center position, and at the same time, the lock member 40 is also moved by the guide member 44.
Locking the L.31R at the neutral position that regulates its movement constitutes a double safety mechanism, and can reliably prevent the marker from accidentally falling to the working position when the marker is not used.

Further, since the switching lock lever 42 is switched interlockingly with the switching member 32, if the switching direction is directed to the marker side which becomes the working position B when the working unit 16 is lowered next time,
Even when the working unit 16 is lifted and both the markers 22L and 22R are in the non-working position A, it is possible to easily and surely know which of the two markers is to be in the working position simply by looking at the direction of the lock lever 42. it can.

Further, when the switching lock lever 42 is installed immediately after the rotating seat 10, the worker can rotate backward while sitting on the rotating seat 10 and can operate the switching lock lever 42 very easily, and the erroneous operation can be performed. Can be prevented.

[Brief description of drawings]

FIG. 1 is a side view showing a switching controller of a marker device according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a side view thereof. 4 to 6 are plan views showing the different states. FIG. 7 is a front view showing the left and right markers, and FIG. 8 is a side view showing a riding rice transplanter equipped with this marker device. Further, FIG. 9 is a plan view of a switching control unit according to a partially modified embodiment, and FIG. 10 is a rear view thereof. 1 ... Paddy field work vehicle (passenger rice transplanter), 5 ... Traveling vehicle, 9 ... Frame, 9a ... Seat frame, 10 ... Seat, 11 ... Driver's seat, 15 ... Link mechanism, 15a ... Upper link, 16 ... Working part (planting) Attached part), 22L, 22R ... Marker, 27 ... Switching control part, 29
… Seat cover, 29a… Notch, 30… Base plate, 31L, 3
1R ... Left and right actuation body, 32 ... Switching member (plate), 33 ... Pin, 35 ... Switching arm, 36 ... Pin, 37 ... Spring, 40
… Lock member (pin), 42… Switching lock lever, 42e
... elongated hole, 44 ... guide member, 44a ... guide surface, 49L, 49R ... left and right operating arms, 56 ... connecting pin, 51 ... wire.

Claims (4)

[Claims] 1. A working unit is supported on a traveling machine body via a link mechanism so as to be able to move up and down, and the working unit is driven up and down by a hydraulic cylinder device. Further, left and right markers, and these left and right markers are provided on the machine body side. In a paddy work vehicle provided with a switching control unit for switching between a working position for extending downward to one side and a non-working position for raising and retracting, the switching control unit can move in conjunction with lifting and lowering of the working unit, and the left and right sides. Left and right actuating bodies respectively connected to the markers, a switching member that is switched by movement of these actuating bodies, and biasing to move to a position that restricts movement of either one of the left and right actuating bodies by switching the switching member. A lock member for switching the direction, and is configured to alternately switch the left or right marker between the working position and the non-working position as the working unit moves up and down. In addition, a switching lock lever is installed so as to be swingable right and left and slidable in the front-rear direction, and the lock lever is connected to the switching member through an elongated hole, and the switching is performed by a left and right sliding operation of the lock lever. Paddy work configured to switch members and lock the switching member in a neutral position in which the lock member is biased to a position in which the lock member engages with both the left and right actuating bodies by sliding the lock lever back and forth. Marker device in a car. 2. The switching lock lever is provided with a guide member, and the forward and backward sliding operation of the lock lever locks the lock member at a neutral position where the movement of both left and right actuating bodies can be restricted by the lock member. The marker device for a paddy field vehicle according to claim 1, which is configured as described above. 3. The claim according to claim 1, wherein the switching lock lever is linked to the switching position of the switching member and is directed toward the marker side which switches to the working position when the working unit is lowered next time. A marker device for the paddy field vehicle described. 4. The marker device for a paddy work vehicle according to claim 1, wherein the switching lock lever is located immediately after a rotating seat in a driver's seat.