JPS6219008A - 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 water self-working vehicle, particularly a riding rice transplanter, and more particularly to the structure and arrangement of a marker device switching control section.

(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 that draws a line that will serve as the aircraft travel reference line for the next leg.

Conventionally, the switching control section of the marker device has been disclosed in, for example, Japanese Utility Model Application No. 57-203706 and Japanese Utility Model Application No. 58-912.
As shown in Publication No. 07, left and right actuating bodies interlocked with the left and right markers, receivers that restrict the movement of these left and right actuators, and brackets that are switched by the movement of the actuators and are stretched between the receivers. 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 section to raise and store the force, and also in conjunction with the descent of the planting section. move one of the left and right actuating bodies through the hole formed in the receiving bracket, tilt one marker to the working position, restrict the movement of the other operating body with the receiving bracket, and set the other working body to the non-operating position. Hold in working position. At this time, as one of the actuating bodies moves, the switching piece is rotated to switch the spring and bias the bracket in the opposite direction. When the fitting is not moved and the planting part rises again and the operating body is removed from the hole of the receiving fitting, the receiving fitting is switched in the opposite direction based on the spring biasing force.
In the next stroke, the other working body moves and the other marker becomes the working position.

←→ Problems to be Solved by the Invention By the way, in the above-mentioned marker switching control section, since the receiving bracket is disposed in front of the switching piece in the direction of movement of the actuating body as the planting part descends, it is difficult to move the left and right actuating bodies. It needs to be moved through the bracket. Because of this, it is necessary to form the bracket into a U-shaped cross section and drill a hole through which the actuator can pass or restrict it, resulting in a complicated shape, and the left and right actuators also pass through the hole in the bracket. Furthermore, since the wire that connects the marker extends through the receiving bracket and the switching piece, it is necessary to prevent these receiving fittings and switching piece from interfering with the wire. Must be configured.

Therefore, the present invention has a simple configuration by arranging the lock pin on the rear side of the switching plate in the direction of movement of the actuating body as the planting part descends, so that the actuating body passes outside the lock pin. The object of the present invention is to provide a highly reliable marker device.

(C) Means for Solving the Problem 3 - The present invention has been made in view of the above-mentioned circumstances. For example, as shown in FIG.
Left and right actuating bodies 31L, 31 that can move in the longitudinal direction of the aircraft in conjunction with the raising and lowering of the planting section) and are respectively linked to the left and right markers.
R, a switching plate 32 that is switched by the movement of these actuating bodies, and a spring 37 between it and the plate 32.
The lock pin 40 is tensioned, and its urging direction is switched by switching the switching plate, and the lock pin 40 restricts the movement of either the left or right actuating body.
is arranged on the rear side with respect to the switching plate 32 in the direction in which the operating body moves as the working section moves downward.

For example, as shown in FIG. 4, the switching plate 3
2, when the biasing direction of the lock pin 40 is switched, the one operating punch 31L passes through the position regulated by the lock pin 40, and the lock pin 40 touches the side surface 31s of the one operating body 31L. The other actuating body 3 comes into contact with the
It is characterized in that it is configured to be held in a position where it comes into contact with the rear end 31X of the other actuating body 31R and restricts the movement of the other actuating body 31R.

(e) Effect Based on the above-described configuration, the left and right actuating bodies 31L are interlocked with the working part when the working part is in the raised position.

31R are both in the forward position as shown in FIG. 1, and therefore the left and right markers connected to these left and right operating bodies are in the non-working position. When the working part is lowered from this state, one working part 31L moves rearward as the working part descends, but the other working part 31R has its rear end 31 connected to the Q-tuck pin 40.
x makes contact and restricts movement, so only one marker falls to the working position. Then, in the middle of the movement of one actuating body 31L, as shown in FIG. Switch.

As a result, the four-pin pin 40 tries to move in the biasing direction, but at this point, one of the actuating bodies 31L has passed through the regulated position by the lock pin 40, and the lock pin 40
One end of the actuator 31L abuts against the side surface 31g of the actuator 31L and is prevented from moving, while the other actuator 31R has its rear end 31x abut against the lock pin 40 and is held at the forward position. Furthermore,
The working part is raised and one of the working parts 31L is attached to the four pins 40.
When the lock pin 40 exceeds this position, the lock pin 40 protrudes based on the biasing force of the spring 37 and restricts the movement of the other actuating body 31R in the next stroke.

(F) Embodiments Hereinafter, embodiments of the present invention will be described 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 11 consisting of a seat 10 and a steering handle 8 located approximately above the center of gravity of the rice transplanter is disposed above the frame 9, and a driver's seat 11 that protrudes in front of the seat 11 is located above the frame 9. An engine 13 is mounted by 12. Further, upper links 15a and 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 support legs.
A parallel link mechanism 15 consisting of b is connected, and the planting part 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 a drive case 17, a float 18, a planter case 19, and a planting frame 20 via an attachment stay 20a so as to be movable in the left and right direction, and has a length that allows two and a half mat seedlings to be placed vertically. The planter 19 arranged in the shaku seedling stand 21 and each planter case 19
It has a. 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. Non-working position A stored in
(solid line) and the working position B (dashed line) where the bent tip a of the planting part 16 that extends to the side comes into contact with the field surface, and these markers 22L and 22R are connected to the planting frame 20. It is biased to the working position B by a return spring 23 stretched therebetween. In addition, a hydraulic cylinder device 26 is interposed between the front Missilon case 6 and the bracket 25 fixed to the upper link 15a at the widthwise center portion of the traveling body 5, and the cylinder device 26 expands and contracts. The planting section 16 is controlled to move up and down.

A switching control section 27 of the marker device according to the present invention is installed in a portion behind the seat 10 between the upper ends of the left and right seat frames 9a, 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 30L, 30R extending in the vertical direction.
are integrally formed. In addition, these plays) 30L
, 30R are each formed with a long hole 30a, into which left and right operating bodies 31L and 31R are slidably guided in the vertical direction via pins 31a and 31a fixed thereto, respectively. Moreover, the upper surface of the actuating body 31... has a notch 31c whose rear part is lower.
, 31c are formed. (Furthermore, a pin 30C is fixedly installed downward in the center of the base plate 30,
A switching plate 32 is swingably supported on the pin 30G by a boss 32b. The switching plate 32 has protrusions 32J and 32r that protrude in the left-right direction and a protrusion 32a that protrudes forward.
are placed on or close to the rear surface of the notches 31e and 31e of the actuating body 31, and a long pin 3 is provided on the front protrusion 32a.
3 is fixed. Further, a switching arm 35 is swingably supported on the pin 30C so as to sandwich a switching plate boss 32b, and the switching arm 35 consists of two plates 35a and 35b and a long long plate fixed to the tips of these plates. It has a pin 36. Furthermore, the pin 3
Switching springs 37 and 37 are stretched between the upper and lower ends of the pin 33 and the switching plate 32. 36, the switching arm 35 is switched to the left/right switching position. Further, left and right brackets 39L, 3 are provided at the rear of the pace plate 30.
9R is fixed thereto, and furthermore, a long lock pin 40 is supported so as to be slidable in the lateral direction passing through holes formed in these brackets, and the lock pin 40 is attached to the left and right actuating body 31L at the protruding position. , 31R. Furthermore, the lock pin 40 has plates 41a on its upper and lower surfaces.
41b is fixed, and the plates 41... are fixed to the pins 36, and the pins 36 pass through long holes in the base plate 30 and project upward. In addition,
Two plates 35a and 3 forming the switching arm 35
5b is attached to sandwich the fulcrum boss 32b of the switching plate 32 and the lock pin plays) 41a, 41b, and the lock pin 40 is attached to these plays) 35a, 35b,
41a, 41b to allow smooth movement in the lateral direction, and these plates
L and 39R to limit the amount of lateral movement of the lock pin 40. That is, the plates 35a, 35b, .

Further, a pin 3 is provided at the rear portion of the base plate 30 and protrudes upward.
A switching lever 42 is swingably and slidably supported on the pin 30D through an elongated hole 42a formed therein.

The switching lock lever 42 has a bent operating portion 42b at its rear end, and the pin 33 is inserted into the elongated hole 4 at its tip.
2e, and the pin 36 is connected at the tip.
A guide plate 44 having a guide portion 44m which is flared toward the end and can be engaged with the guide plate 44 is fixed thereto. In addition, the switching lock lever
A plate 42d extending in the vertical direction is fixed to the lower surface of the rear end of the lever 42, and an engaging member 43 made of a leaf spring is fixed to the plate 42d. With the movement of the base plate 3
The engaging member 43 can engage with the notch groove 30e formed in the 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. Furthermore, brackets 46 are fixed to the left and right frames 9a, 9a, respectively, in the vicinity of the shaft 45, and a shaft 47 is bridged over the tips of both brackets 46. Then, the bosses 49a, 49a are inserted into the shaft 47, and the operating members 49L, 4
9R is rotatably supported, and the arm 49...
A connecting piece 50 is pivotally supported at the tip of the lower plate 49c, and a rod 52 is slidably secured to the connecting piece 50 by a nut 51. guided and said rod 5
The other end of the upper link 15a is pivotally supported and connected to a plate 55 fixed to the base end of the upper link 15a. On the other hand, a notch groove 31d that opens downward is formed in the front lower surface of the left and right actuating bodies 31L, 31R, and the notch groove 31d is provided with an inner wire connection installed at the tip of the upper plate 49b of the actuating arm. Pin 56 is engaged. The other end of the inner wire 57a is connected to the left and right markers 22 as shown in FIG.
12 wires are connected to each of L and 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 focus.

Since the present embodiment has the above-described configuration, the riding rice transplanter 1 allows the planter 19a to scrape the seedlings on the seedling stand 21 while the planting part 16 is lowered, that is, the float 18 is sliding on the rice field surface. Pick it up 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 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 finishes one stroke of planting work and reaches the edge of the field, a 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 plate 55, rod 52, nut 51, connecting piece 5
The right operating arm 49R is rotated via the wire 57a, and the marker 22R located at the working position B is stored in the non-working position A via the wire 57a. Furthermore, based on the simultaneous movement 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 31d. In this state, the lock pin 40 is biased rightward by the spring 37 as will be described in detail later, and when the rear end 31x of the right operating body 31R passes over the lock pin 40, the lock pin 40 protrudes ( (see FIG. 1), the right operating body 31R is prevented from sliding toward the rear of the fuselage. At this time, the left actuating body 31L is prevented from sliding backward by the lock pin 40 until the lock pin 40 is released from the elbow of the right actuating body 31R and protrudes to the right. 22L is held in the non-working position, and 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 through the hole in the connecting piece 50.

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. 2 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 operating body 31 moves to the rear of the aircraft based on the rotation of the left operating arm 49L, its notch 31c comes into contact with the left protruding piece 321 of the switching plate 32, and the plate 32 is rotated around the pin 30C. Figure 1 Rotates counterclockwise (see Figure 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 tensioned between the pin 36 and the pin 36 moves beyond the pivot pin 30C, that is, the point of consideration is moved. and urges the switching arm 35 clockwise around the pin 30C. This results in pin 36 and play)
The lock pin 40 is also urged leftward via 41a and 41b, but in this state, the rear end portion 3 of the left actuating body 31L
1x has already passed through the pin 40 part, so the pin 4
The tip end of the left actuator 31L is prevented from protruding leftward by contacting the side surface 31s of the left actuator 31L, and the right actuator 31R still remains locked to the lock pin 40. As the planting section descends, the left actuating body 31L moves rearward, and the left marker 22L is also set at the working position B extending to the side of the planting section 16 via the wire 57a.

Then, when turning the rice transplanter 1 again, when the planting part 16 is raised, the left actuating piece 31L is moved forward through the left actuating arm 49L, and the actuating piece 31L exceeds the lock pin 40 position. At this point, the lock pin 40 is protruded by the biasing force of the spring 37 to prevent the left actuating body 31L from returning and is also switched to release the right actuating body 31L (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 1).

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 is raised, the driver faces rearward while sitting on the seat 10, moves the switching lock lever 42 to the center position by holding the operating portion 42b, and further pushes it toward the front of the machine (see FIG. 6).

Then, the plate 42d engages with the notched groove 30e to prevent the lever 42 from moving laterally, and the barb engaging member 43 engages with the pin 30D to be positioned at the pushed-in position. In this state, the pin 33 is located in the center, so the switching plate 32 is in the neutral position, and the guide plate 42C is in the neutral position.
The pin 36 is regulated to the center position by the guide portion. 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 is connected to both the left and right moving objects 3.
Prevents backward movement of 1L and 31R. As a result, even if the planting section 16 is lowered, both moving objects 31L.

31R is engaged with the lock pin 40 and is prevented from moving, and the left and right markers 22L and 22R are held at the non-working position A.

In addition, although the above-mentioned example described a riding rice transplanter,
Of course, the present marker device may also be used in other paddy field 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.

(g) As described in detail, according to the present invention, the lock pin 40 is disposed on the rear side of the switching plate 32 in the moving direction of the actuating bodies 3IL, 31R, and the actuating bodies 31L, 31R are connected to the lock pin 40. Since the lock pin 40 is constructed so as to pass through the outside of the lock pin 40, an extremely simple rod-shaped structure is sufficient, and the left and right actuating bodies 31L.

31R also has a very simple configuration consisting of a plate, and furthermore, left and right markers 22L, 22R and left and right actuating bodies 31L, 31.
The wires 57 and 57 interlocking with R do not interfere with the lock pin 40, the switching plate 32, etc., and together, the configuration of the marker switching control section 27 can be greatly simplified. Furthermore, at the point in time when the biasing direction of the four-pin 40 is switched by the switching plate 32, one of the actuating bodies (for example, 31L) passes through the position regulated by the lock pin 40, and the lock pin 40 3
Since the timing is set such that the lock pin 40 is held in a position where it comes into contact with the side surface 31s of the actuator 1L and is prevented from moving and restricts the movement of the other actuating body 31R, the lock pin 40 is moved when the working part 16 rises to the vicinity of the highest position. It is possible to prevent malfunctions such as switching the lock pin due to lifting and lowering of the working part due to unevenness of the tiller.
Since the movement of the actuating body is restricted by coming into contact with the rear end 31x of 1L and 31R, the movement of the actuating body is ensured, and the movement of both moving bodies is ensured to ensure the regulation and release of the restriction. Even when regulating both 31L and 31R, this can be done extremely easily using the lock pin 40.

[Brief explanation 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. 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. 1... Paddy work vehicle (riding rice transplanter), 5... 451 running bodies, 9... Frame, 9a... Seat frame, 10... Seat, 11...
Driver's seat, 15...Link mechanism, 15a...Upper link, 16...Working part (planting part), 22
L, 22R... Marker, 27... Switching control section, 31L, 31R... Left and right actuating body, 31S...
・Side side, 31x...rear end, 32...switching plate, 33...bin, 35...switching arm, 36...pin, 37...spring,
40...Lock pin, 42...Switching lock lever, 49L, 49R...Right and left operating arms, 5
7...Wire.

Claims (1)

[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 that can move in the longitudinal direction of the aircraft and is connected to the left and right markers, a switching plate that is switched by the movement of these actuating bodies, and a spring tensioned between the plate and the switching plate. It consists of a lock pin whose biasing direction is changed by switching and which restricts the movement of either one of the left and right actuating bodies, and furthermore, the lock pin is located on the rear side of the switching plate in the direction of movement of the actuating body as the work equipment descends. When the biasing direction of the lock pin is switched by the switching plate, one of the actuating bodies passes the position where the movement is restricted by the lock pin, and the lock pin A marker device for a paddy field working vehicle configured to be held in a position that abuts a side surface and abuts against the rear end of another operating body to restrict movement of the other operating body.