JPS62205A - Marker apparatus in rice field working vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a marker device in a rice paddy working vehicle, particularly a riding rice transplanter, and more particularly to the structure and arrangement of a switching control section thereof.

(b) Conventional technology In general, riding rice transplanters maintain appropriate spacing between planting rows of seedlings,
In addition, in order to improve the straightness of the aircraft, during planting work,
It is equipped with a marker to draw a line on the rice field that will serve as the machine running reference line for the next process.

Conventionally, the marker device has been used, for example, in U.S. Pat.
As shown in Publication No. 3706, the marker is moved from the working position where it is lowered and extended to the side of the aircraft to the non-working position where it is raised and stored, in conjunction with the raising and lowering movement of the planting section, and when moving the marker from the left or right side. The locking member that holds one of the markers in the non-working position can be switched between left and right using the switching member that is switched as the planting section moves up and down, and the planting section can be raised and lowered when turning the machine at the edge of the field. The left and right markers are automatically switched to the working position.

(c) Problems to be Solved by the Invention By the way, the above-mentioned conventional marker device switching control section has left and right operating bodies that move in the front and rear directions in conjunction with the elevation of the planting section and are connected to the left and right markers, respectively. and a switching member that is switched between the left and right actuating bodies and switches the biasing direction of the locking member. Consists of a switchable structure.

For this reason, when the planting section is raised, the switching member and the actuating body have no equal relationship, and even when the planting section is lowered, the rotation of the switching member in the vertical direction, that is, the falling direction, is not equally regulated, and depending on the use, the switching member and the operating body are not equally regulated. If the switching member tilts due to looseness, the switching member may receive force in the tilting direction and easily lock, or the actuating body may enter the upper or lower surface of the switching member and cause the switching member to become locked. There is a risk that it will happen.

(d) Means for Solving the Problem The present invention aims to solve the above-mentioned problems. For example, as shown in FIGS. 1 to 3, the switching control section 27 of the marker device , left and right actuating bodies 31L and 31R that are linked to the lifting and lowering of the working part ([what part 16) and connected to the left and right markers (22L and 27R), respectively, a switching member 3゛2 that is switched by the movement of these actuating bodies, and It consists of a locking member 40 whose biasing direction is switched by switching the switching member 32 and which restricts movement of either one of the left and right actuating bodies, and the locking member 40 moves the left or right marker from the working position as the working part moves up and down. It is configured to alternately switch to a working position. Furthermore, the switching member 32 is swingably supported on a horizontal plane and has protrusions 321V and 32r that protrude in the left-right direction, and a left-right operating body 31L.
, 31R are slidably supported in the front-rear direction and have a notch 31c in which the rear part of either the upper or lower surface is lowered. Left or right projecting pieces 321 and 32r of the switching member are arranged so as to always intersect with each other on the lower surface 31d.

(el action) Based on the above-mentioned configuration, when the working part is raised when turning the machine at the edge of the field, one of the working parts, for example, the left working part 31L, moves forward, and at the same time, the marker in 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 notch 31c abuts one (left) protrusion 321 of the switching member 32 due to the backward movement of the actuating body 31L in the previous stroke, and the switching member 32 The locking member 4 whose biasing direction has been changed based on the fact that the
0 protrudes to restrict backward movement of the actuating body 31L. Then, when the link mechanism is rotated downward to lower the working part again, the one (left) actuating body 31L moves to the locking member 4.
0, one marker is held in the non-working position, and the other (right) actuating body 31R moves backward,
Only the other marker is lowered to the working position, and the notch 31c of the operating body 31R abuts the other (right) protrusion 32r of the switching member 32, thereby switching the switching member 32.

In addition, in both the raised and lowered positions of the working part,
Left or right protruding piece 32I of switching member 32.

32r is the notch 31 of the left or right operating body 31L, 31R
The projecting pieces 321 and 31c intersect with each other on the lower surface 31d of
32r abuts on the lower surface 31d of the notch 31c, movement in the falling direction is prevented, and either the left or right projecting piece reliably abuts the notch 31c.

(f) Examples Examples according to the present invention will be described below with reference to the drawings.

As shown in FIG. 8, the riding rice transplanter 1 has a traveling body 5 supported by front wheels 2 and rear wheels 3, and the traveling body 5 connects a front transmission case 6 and a rear axle 7. A driver's seat 1) consisting of a seat 10 and a steering handle 8 located approximately above the center of gravity of the rice transplanter is arranged above the frame 9, and an engine 13 is mounted on a front chassis 12 protruding forward of the driver's seat 1). has been done. Further, upper links 15a are provided on the left and right seat frames 9a that are erected on the frame 9 and also serve as seat support legs.
A parallel link mechanism 15 consisting of a lower link 15b and a lower link 15b are connected, and the planting section 16 is supported by the link mechanism 15 so as to be able to rise and fall freely. The planting part 16 is a drive case 17,
A float 18, a planter case 19, and a long seedling stand 21 supported by the planting frame 20 so as to be movable in the left-right direction via an attachment stay 20a and capable of vertically placing two and a half mat seedlings, and each planter. It has a planter 19a arranged in a case 19.

Further, markers 22 are rotatably supported on the left and right stays 20a for supporting the seedling stand 21, respectively, and the left and right markers 22L and 22R are attached to the back side of the seedling stand 21, as shown in detail in FIG. The markers 22L and 22R are switched to the non-working position ak (solid line), which is housed in the planting part 16, and the working position B (dashed line), where the bent tip a of the planting part 16 extends laterally and contacts the field surface. is biased to the working position B by a return spring 23 stretched between it and the planting frame 20. In addition, the front transmission case 6 and the upper link 1 are located at the center of the traveling body 5 in the width direction.
A hydraulic cylinder device 26 is interposed between the plant and the bracket 25 fixed to the plant 5a, and the planting portion 16 is controlled to move up and down by expanding and contracting the cylinder device 26. And see)
A switching control section 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 at the rear of the vehicle 10, that is, in an upper portion of the traveling body 5.

As shown in FIGS. 1 to 3, the switching control section 27 is fixed with bolts across a notch 29a of a seat cover 29 fixed to the upper ends of the left and right frames 9a, 9a. It has a base plate 30, and the base plate 30 further includes left and right plates (left and right plates) 30L, 30R extending in the vertical direction.
are integrally formed. Furthermore, these plates 30L
, 30R are each formed with a long hole 30a, into which the left and right actuating bodies 31L, 3-IR are slid in the longitudinal direction via two pins 31m, 31a fixed thereto. The actuating body 31 is movably guided.
・・There are notches 3 on the top surface so that the rear part is lower.
1c and 31c are formed. Furthermore, the base plate 3°0
A pin 30C is fixedly provided in the center of the switch 30C facing downward, and the switching plate 32 is swingably supported on the pin 30C by a boss 32b. The switching plate 32
has protruding pieces 321, 32r that protrude in the left and right direction and a protruding piece 32a that protrudes forward.
r are placed on or close to the lower surface 31d of the rear surface of the notch 31c and 31c of the actuating body 31, respectively, and are arranged so as to always intersect, and a long pin 33 is fixed to the front protrusion 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 is attached to the two plates 1.35a, 3.
5b and long pins 36 fixed to the tips of these plates. Furthermore, switching springs 37 and 37 are stretched between the pin 36 and the pin 33 at their upper and lower ends, respectively.
By the horizontal movement of the pin 33 based on the switching plate 32, the switching arm 35 passes the pin 36 beyond the point.
to the left/right switching position. Further, 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 supported so as to be slidable laterally through holes formed in these brackets. ,
The lock bin 40 engages the left and right operating body 31L in the protruding position.
, 31R. Furthermore, the lock bin 4
0 has plates 41a and 41b fixed to its upper and lower surfaces, and the plates 41... are fixed to the pin 36, and the pin 36 passes through a long hole in the base plate 30 and extends upward. It stands out. Further, a pin 30D is fixed to the rear portion of the base plate 30 so as to protrude upward, and a switching round lock lever 42 is supported on the pin 30D so as to be swingable and slidable through an elongated hole 42a formed in the pin 30D. has been done. The switching lock lever 42 has a bent operating portion 42b at its rear end, and the pin 33 is connected to the tip via an elongated hole 42e, and the rear end has a tip that engages with the pin 36. A guide portion 44a that is flared at the end and can be fitted
A guide plate 44 is fixed thereto. Further, 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 the plate 42d
An engagement member 43 made of a plate spring is fixed to the plate 42, and as the lever 42 moves in the direction of the seat 10, the plate 42 engages with the notch groove 30e formed in the base plate 30, and A member 43 may engage pin 30D.

On the other hand, a shaft 45 is bridged across the left and right frames 9a, and the upper link 1 of the link mechanism 15 is connected to the shaft 45.
5a is pivotally supported. Further, in the vicinity of the shaft 45, the left and right frames 9a, 9a each have a bracket!・46
are fixedly installed, and a shaft 47 is bridged across the tips of both brackets 46. Then, the bosses 49a, 49a are inserted into the shaft 47, and the operation 7-A49L is performed.
49R is rotatably supported, and the arm 49...
consists of arms 49b and 49c extending up and down, and a connecting piece 50 is pivotally supported at the tip of the lower arm 49c, and the connecting piece 50 is screwed into a male threaded portion so as to be freely adjustable in the axial direction. A rod 52 is slidably guided and prevented from coming out by a nut 51, and the other end of the rod 52 is pivoted and connected to a plate 55 fixed to the base end of the upper link 15a. . On the other hand, the left and right operating body 31L,
3) A notch groove 31e that opens downward is formed in the front lower surface of R, and an inner wire connecting pin 56 installed at the tip of the upper plate 49b of the actuating arms 49L and 49R is inserted into the notch groove 31e. 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 adjustably attached to a bracket 59 fixed to the seat frame 9a with a screw. and the other end is connected to the stay 20a near the marker pivot focus.
Fixed.

Since this embodiment has a top-side configuration, the riding rice transplanter 1 is configured such that the blank 19a supports the seedlings on the seedling stand 21 while the planting section 16 is lowered, that is, the float 18 slides on the rice field surface. Rake it and plant it on the rice field. At this time, a marker on the non-planted side, for example, the right marker 22R, is dropped at the work position B, a line is drawn on the rice field, and the operator operates the rice transplanter along the line in the next planting process.

When the rice transplanter 1 reaches the edge of the field after completing one stroke of planting work, the hydraulic cylinder device 2 is used to turn the rice transplanter 1.
6 and raise the planting part 16. Then, planting part 1
6, the right operating arm 49R is rotated via the plate 55, rod 52, Nara l-51, and connecting piece 50, and further via the wire 57a. The marker 22R in the working position B is stored in the non-working position A. Furthermore, based on the rotation of the actuating arm 49R, the right actuating body 31R slides in the forward direction of the fuselage (rightward in FIGS. 1 and 3) via the connecting pin 56 and the notch groove 31e. In this state, the lock pin 40 is biased rightward by the spring 37, as will be described in detail later, and the rear end of the right actuating body 31R is pressed against the lock pin 4.
0, the lock pin 40 protrudes (see FIG. 3) and prevents the right actuating body 31R from sliding toward the rear of the fuselage. At this time, the left operating body 31L is attached to the lock pin 4.
0 is prevented from sliding backward by the lock pin 40 until the elbow of the right actuating body 31R is released and protrudes to the right, and therefore the left marker 22L is held in the non-operating position. At the same time, the left operating arm 49L is also held in the raised position, and the movement of the upper link 15a is controlled by the rod 52 connected to the connecting piece 5.
It is absorbed by sliding through the holes of 0.

Then, the rotation of the rice transplanter 1 is completed, and the planting section 16 is lowered to restart the planting work. Then, upper link 15
With the descent of a, the left and right operating arms 49 also rotate counterclockwise in FIG. 1 via the plate 55 and rod 52.
When the right actuating body 31R moves slightly backward, its movement is blocked by the lock pin 40, the right actuating 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 actuating body 31L moves toward the rear of the aircraft based on the rotation of the left actuating arm 49L, the notch 31c of the left protruding piece 32I of the switching plate 32!
The plate 32 is rotated counterclockwise in FIG. 3 about the pin 30C (see FIG. 4). Then, the pin 33 provided on the front protruding piece 32a of the switching plate 32 moves significantly to the left, and the tension spring 37 stretched between the pin 36 and the pin 36 moves beyond the pivot pin 30G, that is, the point of consideration is moved. and urges the switching arm 35 clockwise around the pin 30G. As a result, the lock pin 40 is also biased to the left via the pin 36 and the plays 1-41a, 4]b, but in this state, the rear end portion of the left operating body 31L has already passed through the pin 40 portion. Therefore, the pin 4
The tip of 0 comes into contact with the side surface of the left operating body 31L and moves in the left direction ζ
This protrusion is prevented, and the right actuating body 31R remains locked to the lock pin 40. Then, as the planting part descends, the left operating body 31L moves rearward,
Therefore, the left marker 22L is also connected to the planting area 1 via the wire 57a.
It is set at working position B, which extends to the side of 6.

When the rice transplanter 1 is turned around again, when the planting part 16 is raised, the left actuating piece 31L is moved to the front of the machine body via the left actuating arm 49L, and when the actuating piece 31L exceeds the lock bin 40 position, The lock pin 40 is then protruded by the biasing force of the spring 37 to prevent the left actuating body 31L from returning, and is switched to release the right actuating body 31R (see FIG. 5). Then, as the planting part 16 descends, the left actuating body 31L moves to the lock pin 4 in the same manner as described above.
0, the marker 22L is held at the non-working position A, and the right actuating body 31R moves and the right marker 22R is set at the working position B. At this time, the switching lock lever 42 rotates around the pin 30D due to the left and right movement of the pin 33 based on the swinging of the switching plate 32, but which marker is activated next when the planting section 16 is raised? In order to instruct whether to
is on the working body side, that is, working position B, which moves as the planting part descends.
It is located on the marker side (see Figure 3).

When the rice transplanter 1 reaches the final stage of the planting work and becomes unable to lower the marker due to obstructions such as ridges, the rice transplanter 1
6 in the raised state, the driver rotates to face the rear while sitting on the rotating seat 10, moves the switching lock lever 42 to the center position by holding the operating part 42b, and further pushes it toward the front of the aircraft (6th (see figure). Then, plate 42
d engages with the notched groove 30e to prevent the lever 42 from moving laterally, and the bracket engaging member 43 engages with the pin 30D to be positioned at the pushed-in position. In this state, the pin 33 is located at the center, so the switching plate 32 is in the neutral position, and the left and right projecting pieces 321 and 32r are connected to the left and right reactuating body 3.
The pin 36 is located at a position where it engages with the notch portions 31c of the guide plates 1L and 31R, and the pin 36 is further restricted to the central position by the guide portion of the guide plate 44. Therefore, the lock pin 40 is also located in the neutral position together with the pin 36, and in the neutral position, the lock pin 40 prevents the left and right reactivating bodies 31L and 31R from moving backward. Thereby, even if the planting section 16 is lowered, the reactivating bodies 31L and 31R are engaged with the lock pin 40 and are prevented from moving, and the left and right markers 22L and 22R are held at the non-working position A.

Also, prior to planting work, mark 22L on the left and right.

To select which of the 22Rs to activate first,
With the planting part 16 raised, switch lock lever 42
After pulling it out rearward and disengaging the notch groove 30e of the plate 42d, the operating portion 42b of the lever 42 is swung toward the side where the marker is activated first, for example, to the left as shown in FIG. Then, the switching plate 32 is rotated clockwise by the pin 33, the spring 37 is pulled to the right, the switching arm 35 is rotated counterclockwise, and the lock pin 4 is rotated clockwise.
Move 0 to the right. In this state, the right operating body 31R
The rearward movement is restricted by the lock pin 40, and the left operating body 31L is in a free state, and only the left marker 22L becomes the working position B as the planting section 16 descends.

Next, a partially modified embodiment will be described with reference to FIGS. Since the parts are the same as those in the previous embodiment, only the interlocking parts will be explained, and the other parts will be given the same reference numerals and the explanation will be omitted.

The marker operating arms 49L and 49R have a boss portion 49 in the center.
It has a bell crank shape with a boss portion 49.
a is a left and right operating arm 49L rotatable about the pivot shaft 45 of the upper link 15a;

49R are arranged on the left and right sides of the upper link 15a so as to sandwich the upper link 15a. Further, the ends of one arm 49b of the left and right operating arms 49L and 49R are respectively connected to left and right operating bodies 31L,
Connecting pin 56 of wire 57a is inserted into notch groove 31e of 31R.
The tip of the other arm 49c is bent, and bolts 60 are fixed with lock nuts 61, 61 so that their protruding length can be freely adjusted. can come into contact with.

Therefore, when the upper link 15a rotates upward, the bolt 60 comes into contact with the upper surface of the upper link and directly operates the arm 4.
9L or 49R is rotated to move the actuating body 31L or 31R. As a result, the upper link 15a and the operating body 3
The interlocking structure of 1L and 31R is simplified, and the actuating arms 49L and 49R do not require special mounting members or shafts.
The number of parts can be significantly reduced.

Next, another embodiment will be described with reference to FIG. 1) and FIG. 12. In this embodiment as well, the same parts as in the previous embodiment are designated by the same reference numerals, and the explanation thereof will be omitted.

The switching control section 27 of this embodiment is installed below the seat 10, the switching lock lever 42 protrudes forward, and the operating section 42b is located in front of the seat 10. In addition, the left and right operating bodies 31L and 31R have a lower rear surface 31d on the upper surface.
A cutout portion 31C is formed on the lower surface thereof, and a cutout portion 3 whose front and rear ends are high portions 31f and 31g.
1h is formed, and furthermore, an inner wire 57a for marker connection is connected to the rear high portion 31g.

Further, a plate 65 is fixed to the base end of the upper link 15a so as to protrude upward, and pins 66 are installed at the upper end of the plate 65 so as to protrude both to the left and right. It can be located in the lower surface notch portion 31h of 31L and 31R and abut on the front high portion 31f. In addition, 29a in Fig. 12 is the front sea!・It is a cover.

Therefore, when the upper link 15a rotates upward, the plate 65 rotates counterclockwise in FIG.
The pin 66 comes into contact with the front high side surface of the notch 31h of the actuating body 31L or 31R, and moves the actuating body directly forward. Furthermore, when the upper link 15a rotates downward, one of the actuating bodies 31L or 31R moves rearward with the rotation of the plate 65 to bring down the marker to the working position B, and the other actuating body 31R or 31L moves backward as the plate 65 rotates. The plate 65 is regulated by the lock pin 40 and held at the front position, and at this time, the plate 65 rotates without being interfered with by the pin 66 passing through the notch 31h. Further, while sitting on the seat 10, the operator operates the switching lock lever 4 extending toward the front of the lower part of the seat.
By operating the second operating section 42b, the left and right markers are switched and locked.

This allows the rotation of the upper link 15a to be directly controlled by the actuating body 3.
Since 1L and 31R are interlocked by moving back and forth, the interlocking configuration becomes simple and the interlocking can be performed reliably. Further, since the switching control section 27 can be arranged in the space below the seat, the entire fuselage can be constructed compactly, and the longitudinal center of gravity can be maintained well. Furthermore, switching lock lever 4
2 extends toward the front of the seat, the operator can easily switch between the left and right markers while sitting on the seat and facing forward.

In the above-mentioned embodiment, the notch 31c intersecting with the switching plate 32 is formed on the upper surface of the operating bodies 31L, 31R, but it goes without saying that it may be formed on the lower surface.

In addition, although the above embodiment described a riding rice transplanter, 1
It goes without saying that the present marker device may be used in other rice paddy work vehicles such as a seeder in the soil of a flooded paddy field.

Moreover, although the description has been made regarding the line marker, it can be similarly used as a trace marker that instructs the seedling to be followed along the previously planted seedling.

(gl As described in detail, according to the present invention, in both the raised and lowered positions of the working part 16, the left or right protruding pieces 321, 32r of the switching member 32 are connected to the left or right actuating bodies 31L, 31
Since they intersect with the lower surfaces 31d of the R notches 31c, even if a force in the direction of falling is applied to the switching member 32,
The protrusions 321° 32r contact the lower surface 31d to prevent movement in the falling direction, and even if the pivot portion has play due to use, the switching member 32 will receive a force in the falling direction and lock. Further, it is possible to reliably prevent the actuator from coming into contact with the notch portion of the actuating body, and reliable operation can be maintained for a long period of time.

In addition, the left and right actuating bodies 31L, 31R are connected to the two front and rear pins 31a, 31a fixed to the fixing members 30L, 31R.
If it is guided and slidably supported in the elongated hole 30a formed in OR, the actuating body is prevented from falling over and smooth operation can be maintained for a long period of time.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a switching control section of a Mar-6 device according to the present invention, FIG. 2 is a rear view thereof, and FIG. 3 is a plan view thereof. Moreover, FIGS. 4 to 6 are plan views showing different states thereof. FIG. 7 is a front view showing left and right markers, and FIG. 8 is a side view showing a riding rice transplanter equipped with this marker device. 9 and 10 show a partially modified embodiment, and FIG. 9 is a side view of the switching control section and a plan view showing its operating arm. Furthermore, FIG. 1) and FIG. 12 show other embodiments, where FIG. 1) is a plan view of the switching section, and FIG. 12 is a side view thereof. 1...Paddy work vehicle (riding rice transplanter), 5...8 traveling bodies, l=frame, 15...link mechanism, 15a...upper link, 16...
Working part (with WI, 22L, 22R...marker, 27...switching control part, 30...fixing member (base plate), 30L, 30R...fixing member (
play)), 30a-long hole, 31L,
31R...Left and right operating body, 31c...Notch part
, 31d...lower surface, 32... switching member (plate), 321, 32r-left and right projecting pieces, 33...
...Pin, 35...Switching arm, 36...
Pin, 37... Spring, 40... Lock member (pin), 42... Switching lock lever, 49L, 49R... Left and right operating arm, 57
...Wire. Figure 2, Figure 3, No. 9a, Figure 4, Figure 5, Figure 6

Claims (2)

[Claims] (1) A working part is supported on the traveling machine body via a link mechanism so that it can be raised and lowered, and the working part is driven up and down by a hydraulic cylinder device. A paddy field working vehicle is equipped with a switching control section that alternately switches between a working position in which the machine body is lowered and extended to the side and a non-working position in which it is raised and retracted. a left and right actuating body which is movable and connected to the left and right markers, a switching member which is switched by the movement of these actuating bodies, and a biasing direction of which is switched by switching the switching member and which of the left and right actuating bodies. The switching member is swingably supported on a horizontal plane and has a protrusion protruding in the left-right direction, and the left-right operating body is slidable in the front-back direction. It is movably supported and has a notch portion whose rear part is lowered on either the upper or lower surface thereof, and the left or right projecting piece of the switching member is always located on the lower surface of the notch portion of the left or right actuating body. A marker device for a paddy field work vehicle, characterized in that the markers are arranged so as to cross each other. (2) Paddy field work according to claim 1, wherein the operating body is slidably supported by guiding pins fixed to the operating body at two locations, front and back, into long holes formed in the fixing member. Marker device in car.