JPH07102006B2 - 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 price machine, and more particularly to the structure and arrangement of a switching control section thereof.

(B) Conventional technology In general, a passenger rice transplanter properly maintains 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.

And, conventionally, the marker device has been disclosed in
As shown in Japanese Patent Publication No. 59-81307 and Japanese Utility Model Laid-Open No. 59-81307, the marker is moved up and down to move the marker from a working position that is extended downward to the side of the machine to a non-working position where it is raised and stored. The mechanical and electrical lock members that interlock with each other and hold one of the left and right markers in the non-working position are alternately switched between the left and right in accordance with the raising and lowering operation of the planting section, and the machine rotation at the landing end is performed. When facing, the left and right markers are automatically switched to the working position by moving up and down the planting part.

In addition, since the switching control unit of the marker device disclosed in Japanese Utility Model Laid-Open No. 59-81307 is directly linked to the hydraulic cylinder device, the switching control unit is close to the hydraulic cylinder device disposed near the lower center of the traveling machine body. It is located at the top and is attached to the bracket for the hydraulic cylinder device.

Further, the switching control section of the marker device disclosed in Japanese Utility Model Laid-Open No. 57-203706 is arranged on the rear surface of the seedling stand in the planting section, and is attached to the planting frame via a bracket near the upper link pivotal section. ing.

(C) Problems to be Solved by the Invention For this reason, in order to assemble, adjust or disassemble the former switching control unit of the marker device, the operator digs into the lower part of the traveling machine body and places it above the hydraulic cylinder device. I have to put my hands in the work, which makes the work very difficult.

Further, since the switching control unit of the latter marker device is arranged at the lower part of the planting unit where muddy water is likely to fall, muddy water is likely to be applied to the switching control unit and malfunction may occur,
There is a risk that it will become unusable relatively early, and when the seedling stand is configured to be long so that many mat seedlings can be placed,
The switching control unit becomes out of reach, making manual switching work and adjustment / inspection difficult.

(D) Means for Solving the Problem The present invention is intended to solve the above-mentioned problems. For example, as shown in FIG. 1 to FIG. , The left and right actuating members 31L, 31R which are interlocked with the raising and lowering of the working unit (planting unit 16) and are respectively connected to the left and right markers (22L, 27R), the switching member 32 which is switched by the movement of these actuating members, and the switching By the switching of the member 32, the biasing direction is switched, and the lock member 40 for restricting the movement of the left and right actuating bodies or one of the left and right actuating bodies,
Further, the lock member is made of a rod-shaped member, and is biased toward one of the left and right actuating bodies so that its tip comes into contact with the side surface of the actuating body. The operation body is restricted from moving in the reverse direction, and the left or right marker is alternately switched between the working position and the non-working position as the working unit moves up and down.

Further, the switching control section 27 is installed below the seat 10 of the driver's seat 11 and in the vicinity of the traveling body side pivotal support section of the upper link 15a of the link mechanism that supports the working section so as to be able to move up and down. The actuating bodies 31L and 31R are interlocked with the upper link 15a via left and right actuating arms 49L and 49R, respectively.

(E) Operation Based on the above-described configuration, when the working unit is lifted when turning the machine body at the landing end, one of the left operating bodies 31L moves forward through the upper link 15a and the one of the left operating arms 49L, for example. At the same time, the marker at the working position also rises to the non-working position. At this time, based on the switching member 32 being switched by the publication movement of the operating body 31L in the previous stroke, the tip end of the rod-shaped lock member 40 whose urging direction is changed contacts the side surface of the operating body 31L, When the actuation body moves forward to a predetermined position, the contact is released, and the lock member 40 of the actuation body projects so as to restrict the backward movement of the actuation body 31L. When the link mechanism is rotated downward to lower the working unit again, one (left) actuating body 31L is regulated by the lock member 40, one marker is held in the non-working position, and the other (right). ) Actuator 31R is upper link 1
In conjunction with the downward rotation of 5a, it moves rearward via the operating arm 49R, and only the other marker descends to the working position. The marker switching operation is performed below the seat of the traveling machine body.

(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 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 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, a marker 22 is rotatably supported on each of the left and right stays 20a for supporting the seedling placing table 21.
As shown in detail in FIG. 7, L and 22R are the non-working position A (solid line) housed on the back surface of the seedling stand 21 and the protruding tip a that extends to the side of the planting part 16 and the bent tip a is in the field. It is switched to the work position B (chain line) that comes into contact with the surface, and these markers 22L, 22
R is a return spring 2 stretched between the planting frame 20 and
It is biased to work position B by 3.

In addition, the front transmission case 6 and the bracket 2 fixed to the upper link 15a in the central portion of the traveling body 5 in the width direction.
A hydraulic cylinder device 26 is interposed between the plant 5 and the plant 5, and the expansion and contraction of the cylinder device 26 controls the planting part 16 to move up and down. A switching control unit 27 of 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 switching control unit 27 is arranged below the driver's seat 11 as shown in FIGS. 1 to 3. The switching control unit
27 has a base plate 30 fixed by bolts over a notch 29a of a seat cover 29 fixed to the upper ends of the left and right frames 9a, 9a. Left and right plates 30L and 30R extending in the direction are integrally formed.

Further, long holes 30a are formed in these plates 30L, 30R, and left and right actuating members 31L, 3L are formed in the long holes 30a, respectively.
1R is guided slidably in the vertical direction via pins 31a, 31a fixed to them, and notches 31c, whose rear parts are lower, are formed on the upper surfaces of the actuating bodies 31 ,. 31c is 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 includes a protrusion 32l protruding in the left-right direction,
It has 32r and a protruding piece 32a protruding forward, and a left and right protruding piece.
32l and 32r are placed on or close to the rear surfaces of the notches 31c and 31c of the actuating body 31, and the long pin 33 is fixed to the front projecting piece 32a.

Further, 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 and 35b and a long plate fixed to the tips of these plates. It has a pin 36.
Further, switching springs 37, 37 are stretched between the pin 36 and the pin 33 at the upper end portion and the lower end portion thereof, respectively, and the spring 37 extends in the left-right direction of the pin 33 based on the switching plate 32. The movement causes the switching arm 35 to switch to the left / right switching position over the pin 36.

In addition, the left and right brackets 39L and 39R are provided on the rear part of the base plate 30.
, And a long rod-shaped 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, 41b are fixed to the upper and lower surfaces of the lock pin 40, the plates 41 ... Are connected to the pin 36, and the pin 36 is a long hole of the base plate 30. And penetrates through and protrudes upward.

Also, at the rear portion of the base plate 30, the pin 30D
Is fixed, and the switching lock lever 4 is attached to the pin 30D.
2 is swingably and freely supported by a long hole 42a formed therein. The switching lock lever 42 has a bent operation portion 42b at the rear end thereof, the pin 33 is connected to the tip end thereof through an elongated hole 42e, and the rear end portion is further engaged with the pin 36 at the tip end. 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 toward the seat 10, the engaging member 43 can engage with the pin 30D while engaging with the notch groove 30e formed in the base plate 30.

On the other hand, a 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. The shaft 47 has bosses 49a, 49a fitted therein to rotatably support operation arms 49L, 49R. The arms 49 ... consist of vertically extending arms 49b, 49c. A connecting piece 50 is pivotally supported at the tip of 49c, and a rod 51 is slidably attached to the connecting piece 50 with a nut 51 that is screwed into a male screw part and is adjustable in the axial direction. The rod 52 is freely guided, and the other end of the rod 52 is pivotally 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 lower front surface of the left and right actuating bodies 31L, 31R, and the cutout groove 31d is installed at the tip of the upper plate 49b of the operation arms 49L, 49R. The inner wire connecting pin 56 is engaged. The other end of the inner wire 57a is connected to the left and right markers 22L and 22R, respectively, as shown in FIG. 7, and one end of the outer wire 57b is adjustably attached to a bracket 59 fixed to the seat frame 9a by a screw. 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 riding rice transplanter 1 scratches the seedlings on the seedling stand 21 with the planter 19a in a state where the planting portion 16 is lowered, that is, the float 18 slides on the rice field. Take and plant on the rice field. At this time, the marker on the non-planted side, for example, the right marker 22R, is dropped to the work position B, a line is drawn on the rice field, and in the next planting step, the contributor operates the rice transplanter along the line.

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 right operation arm 49R is rotated through the plate 55, the rod 52, the nut 51, and the connecting piece 50, and the wire 57a is further moved. The marker 22R in the working position B is stored in the non-working position A via.

Further, based on the rotation of the actuating arm 49R, the right actuating body 31R moves toward the front of the machine body (first portion) via the connecting pin 56 and the cutout groove 31d.
In this state, the lock pin 40 is biased in the right direction by the spring 37, as will be described later, and the rear end portion of the right actuating body 31R moves. When the lock pin 40 is crossed, the lock pin 40 projects (see FIG. 3) to prevent the right actuation body 31R from sliding rearward of the machine body.

At this time, the lock pin 40 of the left operating body 31L is the right operating body 31R.
The lock pin 40 prevents the sliding in the rearward direction until the elbow is released and protrudes to the right. Therefore, the left marker 22L is held in the non-working position and the left operating arm 49L is also in the raised position. The movement of the upper link 15a 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 right operating body 31
When R moves slightly backward, its movement is blocked by the lock pin 40, the right operating arm 49R remains in that position, and the right marker 22R is held in the non-working position A.

On the other hand, when the left operation body 31L moves rearward of the machine body based on the rotation of the left operation arm 49L, the notch 31c abuts the left protrusion 32l of the switching plate 32, and the plate 32 is centered around the pin 30C. Fig. 3 Rotate counterclockwise (see Fig. 4). 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 biased 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, 41b, but in this state, the rear end portion of the left actuating body 31L has already penetrated the pin 40 portion, The tip of the pin 40 abuts the side surface of the left operating body 31L and is prevented from protruding leftward, and the right operating body 31R still retains the state locked by the lock pin 40. Then, the left operating body 31L moves rearward as the planting section descends,
Therefore, the left marker 22L is also set to the work position B overhanging to the side of the planting portion 16 via the wire 57a.

Then, when turning the rice transplanter 1 again, when the planting part 16 is raised, the left operating piece 31L is moved to the front of the machine body via the left operating arm 49L, and the operating piece 31L exceeds the lock pin 40 position. At this time, the lock pin 40 is switched by the urging force of the spring 37 to prevent the left operating body 31L from returning and release the holding of the right operating body 31R (see FIG. 5).

Then, with the lowering of the planting section 16, in the same way as described above, the left operating body 31L is prevented from moving by the lock pin 40 in the future,
The marker 22L is held in the non-working position A, and the right operating body 31R
Moves and the right marker 22R is set 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, but which marker is activated next when the planting portion 16 is raised. The operating portion 42b is located on the side of the operating body that moves along with the lowering of the planting portion, that is, on the side of the marker that becomes the working position B, in order to indicate whether or not to do so (see FIG. 3).

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 the state in which the driver has lifted up, the driver rotates while still sitting on the rotating seat 10 and turns to the rear, moves the switching lock lever 42 to the center position by holding the operation portion 42b, and further pushes it in the front of the machine (Fig. 6). reference). Then, the plate 42d engages with the notch groove 30e to prevent the lever 42 from moving laterally, and the engaging member 43 engages with the pin 30D to be positioned at the pushing position. In this state, the pin 33 is located at the center, and therefore the switching plate 32 is in the neutral position, and the left and right protrusions 32 are
l and 32r are located at the positions projecting from the lower surface 31d of the left and right actuating bodies 31L and 31R by substantially the same amount, and the lock pin 40 is located
The biasing position of the spring 37 is switched so as to be in a neutral position where it abuts against both L and 31R, and the pin 36 is restricted to the center position by the guide portion of the guide plate 44.

Therefore, the lock pin 40 is also located at the neutral position integrally with the pin 36, and in the neutral position, the lock pin 40 is located on both the left and right actuating members 31L, 31L.
Prevents rearward movement of 31R. As a result, even when the planting portion 16 is lowered, both actuating members 31L and 31R are engaged with the lock pin 40 and blocked from moving, and the left and right markers 22L and 22R are held at the non-working position A.

In order to select which of the left and right markers 22L and 22R is to be operated first prior to the planting work, with the planting part 16 raised, the switching lock lever 42 is pulled out backward and the plate 42d is cut off. After releasing the engagement of the notch groove 30e,
The replacement section 42b is swung to the left side as shown in FIG. Then the switching plate
The pin 32 is rotated clockwise by the pin 33, pulls the spring 37 to the right, rotates the switching arm 35 counterclockwise, and moves the lock pin 40 to the right.

In this state, the right operating body 31R is restricted from moving rearward by the lock pin 40, the left operating body 51L is in a free state, and only the left marker 22L is in the working position B as the planting portion 16 descends. .

In addition, since the depth of plowing differs depending on the field, the marker 22
When the L and 22R are continuously raised by the rotation of the operating arms 49L and 49R, in a normal field, when the movement starts from the working position B toward the non-working position A, the entire lifting stroke of the planting unit 16 is reached. It is desirable to set it when it rises by at least half or more, and when descending the markers 22L, 22R, start descending at an early stage of descending planting part and do not reach half of the total descending stroke of planting part 16. It is desirable to set the marker so that it is at the work position B.

Therefore, the operator inserts his / her hand from the rear of the traveling machine body 5 while observing the ascending / descending position of the planting portion 16, and rotates the nuts 51 screwed to the left and right rods 52 to connect with the rods 52. 50 pieces
By adjusting the amount of play with the left and right markers 22L, 22R
For each of the above, adjustment is made so that the actuating members 31L, 31R are securely locked by the lock pin 40 when the upper link 15a is at the highest position, and the markers 22L, 22R and the actuating member 31
By adjusting the outer 57b of the wire 57 connecting the L and 31R to the mounting portion of the seat frame 9a, the left and right markers 22
The storage angle of each of the L and 22R in the non-working position B is adjusted so that the storage position is adjusted to the optimum position.

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. Furthermore, the tip of the rod-shaped lock member 40 has a left or right actuation body 31L,
Since the lock member protrudes when the corresponding contact is released and the contact is released, the movement of the actuation body in the return direction is restricted.
It is possible to reliably and accurately lock the left and right actuating bodies by the locking member, and it is possible to reliably prevent the planting-side marker from falling down to the work position and the planting seedlings falling down.

(G) Effect of the Invention As described above, according to the present invention, the switching work part 27 of the marker device is provided with the pivotal support part 45 of the upper link 15a of the traveling machine body 5.
Since it is placed in the vicinity, mud and muddy water are less likely to adhere during work, smooth operation can be maintained and durability can be improved, and the left and right actuating bodies 31L and 31R are respectively actuating arms 49L and 49R. Since it can be interlocked with the upper link 15a via the, the interlocking configuration is extremely simple and a short thing is sufficient, and the configuration is simple, and adjustment and inspection of the left and right markers 22L, 22R can be done by putting hands from the rear of the traveling body etc. It can be done very easily in a comfortable posture.

Further, the left and right actuating members 31L and 31R are respectively attached to the left and right actuating arms 49.
Since the left and right markers 22L and 22R are linked to the upper link 15a via L and 49R, respectively, the left and right markers can be easily stored at the tilt start position and the non-working position A to the working position B separately. The marker can be used in an appropriate state in any field.

In addition, the upper arm 49b of the operating arms 49L and 49R is connected to the operating body 31L,
The lower arm 49a of the operating arm is connected to the 31R
By interlocking with the upper link 15a through the upper link 15a, the operating bodies 31L, 31R and the rod 52 can be arranged in the vertical direction with the upper link 15a sandwiched therebetween, and the movements of these operating bodies and rods can be reversed and the entire switching control unit 27 Can maintain a good balance.

Further, when the marker 57 is connected to the actuating members 31L and 31R by hooking the marker connecting wire 57 and the upper link interlocking actuating arms 49L and 49R together, the force for lifting the marker acts directly on the actuating arm and causes the switching control unit 27 to operate. Since a large force does not act, a lightweight and compact structure with low strength can be obtained.

Further, when applied to the riding rice transplanter 1 equipped with the planting unit 16 having the long seedling placing table 21, if the switching control unit is arranged on the planting unit 16 side, even when the planting unit 16 is raised. Although the switching control unit is out of reach when the driver is seated in the driver's seat, the switching control unit 27 is located near the seat 10, so that the worker remains seated on the seat 10 and the switching control unit 27 42 can be operated.

[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 rear view thereof, and FIG. 3 is a plan 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. 1 ... Paddy field 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 part), 22L, 22R …… Marker, 27
...... Switching control part, 29 ...... Seat cover, 29a ...... Notch part, 30 ...... Base plate, 31L, 31R ...... Left and right actuating body, 32 ...
… Switching plate, 33 …… pin, 35 …… switching arm,
36 …… pin, 37 …… spring, 40 …… lock pin, 42
...... Switch lock lever, 49L, 49R ...... Left and right operation arm, 49a ...... Lower arm, 49b ...... Upper arm, 51 ...... Nut, 52 ...... Rod, 55 ...... Plate, 56 ...... Connecting pin, 57 ... … Wire, 57a… Inner wire, 57b… Outer wire.

Claims (3)

[Claims] 1. A traveling machine body having a driver's seat which supports a working unit so that it can be raised and lowered through a link mechanism, and the working unit is driven up and down by a hydraulic cylinder device. In a paddy field vehicle including a switching control unit that alternately switches the marker to a work position in which the marker is pulled down to the side of the machine body as the work unit moves up and down, and a non-working position in which the marker is raised and stored, the switching control unit is the working unit. The left and right actuating bodies that can move in conjunction with the up and down movement of the actuating body and are respectively connected to the left and right markers, the switching member that is switched by the movement of these actuating bodies, and the urging direction thereof is switched by the switching of the switching member. The lock member is a rod member that restricts the movement of one of the left and right work bodies, and the lock member is a rod-shaped member that is biased toward either the left or right actuating body. The tip contacts the side surface of the operating body, and when the operating body is moved and released from contact, it projects to restrict the movement of the operating body in the opposite direction. A marker device for a paddy work vehicle, which is installed below a seat and near a traveling-body-side pivotal support portion of an upper link of the link mechanism, and further, the left and right actuating bodies are interlocked with the upper link via left and right actuating arms, respectively. 2. The left and right actuating bodies are movably arranged in the front-rear direction of the traveling machine body and above the traveling machine body side pivotal support portion of the upper link, and are further connected to the left and right working bodies with left and right markers, respectively. And the upper arms of the left and right operating arms are connected to each other, and the lower arms of the left and right operating arms are interlocked with the upper link via a rod having an adjusting portion at a position below the pivotal supporting portion. A marker device for a paddy field vehicle according to claim 1. 3. The marker device for a paddy work vehicle according to claim 1, wherein the working unit is a planting unit provided with a long seedling stand on which approximately two and a half mat seedlings can be placed. .