JPH0640766B2 - 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 and an arrangement of a marker device switching control section.

(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 that serves as a reference line for traveling the aircraft.

Conventionally, the switching control unit of the marker device is disclosed in, for example, Japanese Utility Model Laid-Open No. 57-203706 and Japanese Utility Model Laid-Open No. 58-912.
As disclosed in Japanese Patent Publication No. 07-2007, the left and right actuating bodies interlocking with the left and right markers, the metal fittings for restricting the moving bodies of these left and right actuating bodies, and the moving bodies are switched and stretched between the metal fittings. It has a switching piece that switches the biasing direction of the spring, and moves the left and right actuating bodies in conjunction with the rise of the planting part to raise and store the marker, and in conjunction with the lowering of the planting part, the left and right Move one of the actuating bodies through the hole formed in the receiving metal fitting to bring one marker down to the working position, and the movement of the other operating body is restricted by the receiving metal fitting, while the other operating body is in the non-working position. Hold on. At this time, the switching piece is rotated with the movement of one of the actuating members to switch the spring to urge the receiving metal member in the opposite direction. If the metal fittings are not moved and the planting part rises again and the actuating body comes out of the holes of the receiving metal fittings,
The receiving bracket is switched in the opposite direction based on the spring biasing force, and in the next stroke, the other actuating body moves and the other marker becomes the working position.

(C) Problems to be solved by the invention By the way, in the above marker switching control unit, since the receiving metal fitting is arranged on the front side in the moving direction of the operating body as the planting section descends with respect to the switching piece, the left and right operating bodies are arranged. Need to be moved through the bracket. For this reason, it is necessary to form the receiving bracket in a U-shaped cross-section and to make a hole for passing or restricting the actuating member, which has a complicated shape, and the left and right actuating members also pass through the hole of the receiving member. And the wire has a complicated shape that can be regulated and the wire connecting with the marker extends through the receiving metal fitting and the switching piece, so that the receiving metal fitting and the switching piece do not interfere with the wire. Need to be configured.

Therefore, in the present invention, the lock pin is arranged on the rear side of the switching plate in the moving direction of the actuating member as the planting portion descends, so that the actuating member passes through the outside of the lock pin. It is an object of the present invention to provide a highly reliable marker device.

(D) Means for Solving the Problem The present invention has been made in view of the above circumstances, and as shown in FIG. 1, for example, the switching control unit 27 raises and lowers the working unit (planting unit). Left and right actuating bodies 31L, 3 that can move in the front-rear direction of the body in conjunction with each other and interlock with the left and right markers respectively
1R, a switching plate 32 that is switched by the movement of these actuating bodies, and a spring 3 between the switching plate 32 and the plate 32.
7 comprises a lock pin 40 which is stretched and whose urging direction is switched by switching the switching plate and which restricts the movement of one of the left and right actuating bodies.
0 is arranged on the rear side of the switching plate 32 in the movement direction of the operating body as the working unit descends. Then, for example, as shown in FIG.
When the urging direction of 0 is switched, one of the actuating members 31
L passes through the position regulated by the lock pin 40,
The lock pin 40 is the side surface 31s of the one actuating body 31L.
And the rear end 31x of the other actuating body 31R to be held at a position for restricting the movement of the other actuating body 31R.

(E) Operation Based on the above configuration, when the working unit is in the raised position, the left and right actuating units 31L and 31R that are interlocked with the working unit are both in the forward position as shown in FIG. The left and right markers connected to is in the non-working position. When the working part is lowered from this state, one actuating body 31L moves rearward as the working part descends, but the other actuating body 31R is restricted in movement by the rear end 31x of which comes into contact with the lock pin 40, Therefore, only one of the markers falls to the working position. Then, during the movement of the one actuating body 31L,
As shown in FIG. 4, the notch 31c of the actuating body 31L.
The switching plate 32 comes into contact with and rotates to rotate the spring 3
The urging direction of 7 is switched. As a result, the lock pin 40
Tries to move in the urging direction, but at this point, one actuating body 31L has passed the regulation position by the lock pin 40, and one end of the lock pin 40 abuts the side surface 31s of the actuating body 31L. Is prevented from moving, and the other actuator 3
1R is held at the front position by abutting the rear end 31x thereof on the lock pin 40. Further, when the working part moves up and one actuating body 31L exceeds the position of the lock pin 40, the lock pin 40 projects due to the urging force of the spring 37, and restricts the movement of the other actuating body 31R in the next stroke.

(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 seat 10 and a steering handle 8 located substantially above the center of gravity of the rice transplanter is arranged above the frame 9, and the front chassis projects forward. An engine 13 is mounted by 12. Further, the upper and lower links 15a and the lower links 15 are provided on the left and right seat frames 9a which are erected on the frame 9 and also serve as seat supporting legs.
The parallel link mechanism 15 composed of b is connected, and the planting portion 16 is supported by the link mechanism 15 so as to be able to move up and down.
The planting section 16 is supported by the drive case 17, the float 18, the planter case 19, and the planting frame 20 via the mounting stay 20a so as to be movable in the left-right direction, and is capable of placing two and a half mat seedlings vertically. A planter 19 arranged on each of the planter cases 19 and the seedling stand 21 of the shaku
a. 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 tip a that is bulged to the side of the planting part 16 and bent is switched to the work position B (chain line) where it contacts 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 them. A hydraulic cylinder device 26 is interposed between the front mission case 6 and the bracket 25 fixed to the upper link 15a at the center of the traveling machine body 5 in the width direction. The attachment part 16 is controlled 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.

As shown in FIGS. 1 to 3, the switching control portion 27 is fixed by a bolt across a cutout portion 29a of a seat cover 29 fixed to the upper ends of the left and right frames 9a, 9a. The base plate 30 is provided with the left and right plates 30L and 30R extending in the vertical direction.
Are integrally formed. Furthermore, these plates 30
Long holes 30a are formed in L and 30R, respectively.
Left and right actuating members 31L and 31R are guided in the elongated holes 30a slidably in the vertical direction via pins 31a and 31a fixedly mounted on the left and right actuating members 31L and 31R, respectively. Notches 31c, 3 with lower rear part
1c is formed. Further, a pin 30C is fixed downward at the center of the base plate 30.
A switching plate 32 is swingably supported on C by a boss 32b. The switching plate 32 includes protruding pieces 32l and 32r protruding in the left-right direction and a protruding piece 3 protruding in the front direction.
2a, the left and right projecting pieces 32l, 32r are placed or close to the rear surfaces of the cutouts 31c, 31c of the actuating body 31, and the long pin 33 is fixed to the front projecting piece 32a. A switching arm 35 is swingably supported by the pin 30C so as to sandwich the switching plate boss 32b, and the switching arm 35 includes two plates 3a and 3b.
5a, 35b and long pins 36 fixed to the tips of these plates. Further, switching springs 37, 37 are stretched between the pin 36 and the pin 33 at the upper end and the lower end thereof, respectively, and the spring 37 is provided on the switching plate 32 in the left-right direction of the pin 33. By the movement, the pin 36 is passed over the point of consideration and the switching arm 35 is switched to the left / right switching position. Left and right brackets 39L and 39R are fixed to the rear portion of the base plate 30, and a long lock pin 40 is laterally slidably supported by penetrating through the holes formed in these brackets. The lock pin 40 can abut the rear ends of the left and right actuating members 31L and 31R at the protruding position. Further, plates 41a and 41b are fixed to the upper and lower surfaces of the lock pin 40, the plates 41 ... Are fixed to the pin 36, and the pin 36 penetrates a long hole of the base plate 30. And then project upwards. The switching arm 3
The two plates 35a and 35b forming the reference numeral 5 are the fulcrum boss 32b of the switching plate 32 and the lock pin plate 4.
1a and 41b are mounted so as to sandwich the lock pin 40 between the plates 35a, 35b, 41a and 41b.
The guide plate guides the plate to smoothly move in the lateral direction, and these plates abut the left and right brackets 39L and 39R to limit the lateral movement amount of the lock pin 40. That is, the plate 35 forming the switching arm 35
a, 35b ... Also serve as a lateral movement guide plate and a stopper for the lock pin 40. Also, the base plate 3
A pin 30D is fixed to the rear portion of 0 in such a manner 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. 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 tip end thereof has a flared shape capable of engaging with the pin 36. A guide plate 44 having a guide portion 44a 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, the shaft 45 is bridged across the left and right frames 9a, 9a, and the upper link 1 of the link mechanism 15 is connected to the shaft 45.
5a is pivotally supported. Further, brackets 46 are fixedly mounted on the left and right frames 9a, 9a in the vicinity of the shaft 45, and a shaft 47 is bridged over the tip portions of the brackets 46. The bosses 49a, 49a are inserted into the shaft 47 so that the operating arms 49L, 4A
9R is rotatably supported, the arms 49 are composed of vertically extending plates 49b and 49c, and a connecting piece 50 is pivotally supported at the tip of the lower plate 49c.
A rod 52 is slidably guided to the connecting piece 50 by a nut 51 so that the rod 52 is slidably guided, and the other end of the rod 52 is pivotally supported by a plate 55 fixed to the base end of the upper link 15a. It is connected. On the other hand, the left and right actuating bodies 3
Notch groove 3 opening downward on the front lower surface of 1L, 31R
1d is formed, and the inner wire connecting pin 56 installed at the tip of the upper plate 49d of the operating arm is engaged with the cutout groove 31d. The inner wire 5
As shown in FIG. 7, the other end of 7a has left and right markers 22L,
22R, and one end of the outer wire 57b is fixed to the seat frame 9a, and 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 by 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, a marker on the unplanted side, for example, the right marker 22R is dropped to the work position B, a line is drawn on the rice field, and the driver operates the rice transplanter along the line in the next planting step.

When the rice transplanter 1 completes the one-step planting work and reaches the end of the field, the hydraulic cylinder device 2 is turned to rotate the rice transplanter 1.
6 is extended and the planting part 16 is raised. Then, planting section 1
6, the plate 55, the rod 52, the nut 51, and the connecting piece 5 are interlocked with the upward rotation of the upper link 15a accompanying the ascent of 6.
The right operation arm 49R is rotated via 0, and the marker 22R at the working position B is stored in the non-working position A via the wire 57a. Further, based on the rotation of the operating arm 49R, the right operating body 31R 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 the state, as will be described later in detail, the lock pin 40 is biased to the right by the spring 37, and when the rear end portion 31x of the right actuation body 31R crosses the lock pin 40, the lock pin 40 projects ( (See FIG. 1), the right actuation body 31R is prevented from sliding rearward of the machine body. At this time, the left operating body 31L is prevented from sliding rearward by the lock pin 40 until the lock pin 40 protrudes rightward after the right elbow of the right operating body 31R is released, and therefore the left marker 22L. Is held in the non-working position, the left operating arm 49L is also held in the raised position, and 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, the upper link 15
The left and right operation arms 49 also rotate counterclockwise in FIG. 2 via the plate 55 and the rod 52 as a is lowered.
When the right operating body 31R moves slightly rearward, 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 operating body 31 moves rearward of the machine body based on the rotation of the left operating arm 49L, the cutout portion 31c abuts on the left projecting piece 32l of the switching plate 32, and the plate 32 is centered around the pin 30C. Fig. 1 Rotates 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, the thought point. After that, 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, the rear end portion 3 of the left operating body 31L is
Since 1x has already passed through the pin 40 portion, the pin 4
The front end portion of 0 contacts the side surface 31s 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, so that the left marker 22L is also set to the work position B overhanging to the side of the planting section 16 via the wire 57a.

Then, when turning the rice transplanter 1 again, when the planting portion 16 is raised, the left operating piece 31L is moved forward through the left operating arm 49L, and the operating piece 31L exceeds the lock pin 40 position. At this point, 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 31L (see FIG. 5). Then, as the planting portion 16 descends, similarly to the above, the left actuation body 31L is blocked by the lock pin 40, the marker 22L is held at the non-working position A, and the right actuation body 31R is changed. After moving, the right marker 22R is set at the work position B. At this time,
The switching lock lever 12 rotates about the pin 30D by the lateral movement of the pin 33 based on the swing of the switching plate 32, but indicates which marker will be operated next when the planting portion 16 is raised. In order to do so, the operation unit 42
b is located on the side of the actuator that moves as the planting part descends, that is, on the side of the marker that is the working position B (see FIG. 1).

Then, when the rice transplanter 1 reaches the final stage of the planting work and is in a state in which the marker cannot be lowered due to obstacles such as ridges, the planting unit 1
In the state in which 6 is raised, the driver turns to the rear while sitting on the seat 10, moves the switching lock lever 42 to the center position by holding the operation portion 42b, and further pushes it forward (see FIG. 6). Then, the plate 42d engages with the notch groove 31e 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 located at the center and therefore the switching plate 32 is at the neutral position,
Further, the pin 36 is restricted to the center position by the guide portion of the guide plate 42C. Therefore, the lock pin 40 is also positioned in the neutral position integrally with the pin 36, and the lock pin 4 is in the neutral position.
0 prevents the left and right actuating members 31L and 31R from moving backward. As a result, even if the planting part 16 is lowered, both actuation bodies 3
1L and 31R are engaged with the lock pin 40 to prevent movement, and the left and right markers 22L and 22R are held at the non-working position A.

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, the lock pin 40
Is arranged on the rear side in the moving direction of the actuating members 31L and 31R with respect to the switching plate 32 so that the actuating members 31L and 31R pass through the outside of the lock pin 40. The left and right actuating members 31L and 31R have a very simple structure made of plates, and the wires 57 and 57 for interlocking the left and right markers 22L and 22R and the left and right actuating members 31L and 31R are the lock pin 40 and the switching. The plate 32 and the like do not interfere with each other, and together, the structure of the marker switching control unit 27 can be greatly simplified. Further, at the time when the biasing direction of the lock pin 40 is switched by the switching plate 32, one actuating body (for example, 31 L) is locked by the lock pin 4
When the lock pin 40 passes through the position regulated by 0, comes into contact with the side surface 31s of the one actuating body 31L and is prevented from moving, and is held at the position that regulates the movement of the other actuating body 31R. Therefore, the lock pin 40 can be switched only when the working unit 16 is raised to the vicinity of the highest position, and the lock pin can be prevented from being erroneously operated due to ascent and descent of the working unit due to unevenness of the tiller. Since 40 abuts on the rear ends 31x of the actuating bodies 31L and 31R and regulates the movement of the actuating bodies, the regulation and deregulation operations are reliable, and both markers 22L and 22R are both held in the non-working position A. Even if both the actuating members 31L and 31R are restricted, the lock pin 40 can be used very easily.

[Brief description of drawings]

FIG. 1 is a plan view showing a switching control section of a marker device according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a rear 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 …… Seat, 15 …… Link mechanism, 15a ……
Upper link, 16 ... Working section (planting section), 22L, 2
2R ... Marker, 27 ... Switching control section, 31L, 31
R: left and right actuating body, 31s: side surface, 31x: rear end,
32 ... switching plate, 33 ... pin, 35 ... switching arm, 36 ... pin, 37 ... spring, 40 ...
... Lock pin, 42 ... Switching lock lever, 49L,
49R: left and right operating arms, 57: wire.

Claims (1)

[Claims] 1. A working unit is supported on a traveling machine body via a link mechanism so that the working unit can be moved up and down, and the working unit is driven up and down by a hydraulic cylinder device. In a paddy field vehicle equipped with a switching control unit that alternately switches between a working position in which it is extended downward to the side of the machine body and a non-working position in which it is raised and stored as the unit moves up and down, the switching control unit raises and lowers the working unit. Left and right actuating bodies that can move in the front-rear direction of the machine body and are linked to the left and right markers, a switching plate that is switched by the movement of these actuating bodies, and a spring that is stretched between the plates to perform the switching. The switching direction of the plate is switched by switching the plate, and the plate comprises a lock pin for restricting the movement of one of the left and right actuating bodies. On the other hand, when the working plate is arranged on the rear side in the moving direction of the working machine according to the descent of the working machine and the biasing direction of the lock pin is switched by the switching plate, one of the working bodies is restricted from moving by the lock pin. And the lock pin is brought into contact with the side surface of the one actuating body and the rear end of the other actuating body to be held at a position for restricting the movement of the other actuating body. Marker device for paddy field vehicle.