JPH0440412Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a marker device for a paddy field working machine in which a working device such as a rice transplanter or a seeding machine is attached to a traveling machine body.

In general, a riding rice transplanter shown as an example of a paddy field working machine is designed to properly maintain the spacing between planting rows of seedlings and to improve the straightness of the traveling machine during planting work.
It is equipped with a marker that draws a line on the rice field that will serve as a reference line for the traveling aircraft on the next trip. The markers are provided on both the left and right sides of the planting device of the rice transplanter, and only one of the required markers protrudes to a working position on the side of the machine, and unnecessary markers are stored in a non-working position on the machine side, When the rice transplanter is turned, the working states of the left and right markers are automatically switched in conjunction with, for example, the raising and lowering operations of the planting device of the rice transplanter. Conventionally, there are automatic markers of this type on the market that use an electric circuit and the expansion of a solenoid, but this type is expensive and requires a battery, so it is difficult to use a recoil starter. The problem was that it could not be installed on rice transplanters using this method. In addition, the marker is raised in conjunction with the extension of the ram of the hydraulic cylinder that moves the planting device of the rice transplanter up and down, and the lock plate is switched by operating the planting lever or hydraulic lever to alternately lock or lock the marker operating member. A device for releasing the lock has been devised (see Japanese Patent Laid-Open No. 56-68307), but in this device, the lock plate is switched at the beginning of the rise of the planting device, so the marker actuating member is locked during its movement. As a result, the marker operating member and lock plate are pressed from the lateral direction by the plate, which may cause premature wear, prevent smooth operation of the operating member, and hinder the raising and lowering of the marker. Since the lock is released when the planting device starts to rise by operating a lever, etc., the marker held in the non-operating position will temporarily lower, and the seedlings planted by the lowered marker will be mowed down during turning. I was afraid.

Therefore, in the present invention, a working device is attached to a traveling machine body so that it can be raised and lowered, and furthermore, on both sides of the machine body of the working device,
In a paddy field working machine in which left and right markers are movably attached in a working position protruding to the side of the machine body and a non-working position in which they are housed on the machine body side, a pair of markers are mounted on the traveling machine body and move back and forth in response to the lifting and lowering movements of the working machine. A marker operating member is provided, and these marker operating members are connected to the left and right markers via wires, respectively, so that both the left and right markers are forcibly moved to a non-working position in conjunction with the lifting of the working device. Configure it like this,
Further, when the marker operating member is in a position where the marker is placed in a non-operating position, a pair of locking devices are provided to prevent each marker operating member from moving to the operating position side, and the locking devices are secured by a spring beyond the fulcrum. The swing arm is connected to both ends of a swinging arm that is biased by and operated to change the left and right tilting posture, and the swinging arm is further linked to an operating lever that is operated when the rice paddy work machine is turned. The movement of the marker operating member based on the movement of the working device to the raised position causes the swinging arm to be in a swingable state, and the tilted posture of the swinging arm is alternately switched each time the operating lever is operated. It is therefore an object of the present invention to provide a marker device for a paddy field working machine which eliminates the above-mentioned drawbacks by configuring the marker operating member to be alternately locked or unlocked by a locking tool at the raised position of the working device. That is.

Hereinafter, the present invention will be specifically explained based on an embodiment of a riding rice transplanter shown in the drawings.

As shown in FIG. 1, the riding rice transplanter 1 has front wheels 2.
It has a traveling body 5 supported by rear wheels 3, and the traveling body 5 has an engine section 6 at the front, and an auxiliary seedling stand 7 and a driver's seat 9 at the rear. Further, the driver's seat 9 is provided with a seat 10 and a handle 11, and a hydraulic lever 12 is provided on the side of the seat 10.
is installed. On the other hand, a planting device 15 is supported behind the traveling body 5 via a link 13 so as to be able to swing up and down, and the planting device 15 has a body 16 made of a transmission case or the like. Furthermore, the aircraft 16
Two markers 17 and 17' are mounted on both sides of the machine so as to be movable between a working position that protrudes to the side of the machine and a non-working position that is stored on the machine side. A lifting device 19 for lifting and lowering the device 15 and a marker lifting device 20 for lifting and lowering the markers 17 and 17' are installed.

As shown in FIGS. 2 and 3, the lifting device 19 of the planting device 15 has a hydraulic cylinder 22 that is fixed to the traveling body 5 via a bracket 21. It has a ram 23 that can protrude toward the rear of the fuselage. Further, a spring receiving plate 25 is integrally fixed to the ram 23, and the tip of the ram 23 is attached to a bracket 26a of an upper link 26 that constitutes the link 13.
is connected via a spring.

On the other hand, the marker lifting device 20 has rod-shaped marker operating members 27, 27' that are slidably fitted into holes provided near both upper ends of the spring receiving plate 25. A stopper 28 is fixed to the rear end of '. Locking portions 27a, 27'a are formed at the tips of the marker actuating members 27, 27', respectively, and are bent outward at right angles. Brackets 29, 29', 30, 30' integrally fixed on the upper part are guided along elongated holes 29a, so that these marker actuating members 27, 27' are connected to the ram 23 of the hydraulic cylinder 22.
It is adapted to be slidably actuated approximately parallel to the direction of expansion and contraction. Further, marker actuating members 27,2
7' has an outer receiver 3 integrally located near its tip.
The outer wires 32a, 32'a of the marker actuation wires 32, 32' are locked to them, and one ends of the inner wires 32b, 32'b are locked to the locking wires 32b, 32'b provided at the top of the hydraulic cylinder 22. Stop part 3
3, and the other end is fixed to spring 35, 3, respectively.
Marker 1 is biased towards the working position by 5'
7, 17' is fixed on the side that can be raised to the non-working position.

Also, the brackets 29, 3 of the hydraulic cylinder 22
0, when the marker actuating members 27, 27' are in the position where the markers 17, 17' are in the non-working position, the locking portion 27 of each marker actuating member 27, 27'
A pair of lock plates 36, 36' are pivotally connected at one end by a pin 34, respectively, so as to engage with the locking portions 27a, 27'a. , 27'a, that is, toward the hydraulic cylinder 22 side. The lock plates 36, 36' are arranged as shown in FIG. 2b.
Locking recesses 36b and 36'b having locking protrusions 36a and 36'a at their lower portions are formed into deep curves, and connecting rods 37 and 36'b are formed at the ends opposite to the pivoting ends, respectively. 37', a long hole 39a fixed thereto,
Through connecting members 39, 39' provided with 39'a,
It is slidably connected to both sides of the swing arm 40. The swinging arm 40 is swingably attached to a shaft 42 fixed to a cover plate 41 or the like at the bottom of the seat 10, and has a chevron-shaped projection 40a at the center of its upper part. A fulcrum cross-over spring 43 stretched between a pin provided on the top of the cover plate 40a and a pin provided on the cover plate 41 bistablely holds the device in its left and right tilted positions. An operating member 45 for operating the swing arm 40 to the left and right tilting positions is suspended from the cover plate 41 via a tension spring 46.
The lower end of 5 is connected via a wire 47 and a stock spring 49 to a hydraulic lever 12 for operating a switching valve (not shown).

Since this embodiment has the above configuration,
When carrying out rice planting work using the riding rice transplanter 1, the traveling machine 5 is driven while the planting device 15 is being driven in a lowered state, and in a working posture with the marker 17' on the non-planted side protruding to the side of the machine 16. This is done by moving forward along the line drawn by the marker 17 in the previous step. After completing one stroke of the planting work, in order to turn the rice transplanter 1 on the headland, first move the hydraulic lever 12 from the lowering position shown by the dotted line to the lower position shown by the solid line, as shown in Figure 3a. When operated to the raising operation position, a switching valve (not shown) is switched and the ram 23 of the hydraulic cylinder 22 is first extended, thereby rotating the upper link 26 of the link 13 upward and raising the planting device 15. let At this time, ram 2
3 moves rearward, the spring receiving plate 25 also moves rearward, as shown by the dashed line in FIG. ' is brought into contact with the stopper 28, and the marker actuating member 27' is moved rearward.
The outer wire 32'a of the actuating wire 32' moves backward and the inner wire 32'b becomes shorter on the marker 17' side, so that the marker 17', which is in the working position against the spring 35', becomes non-working. It is stored on the fuselage 16 side so that it is in the attitude. The locking portion 27'a of the actuating member 27' is connected to the lock plate 36'.
reaches a position where it can be locked in the locking recess 36'b. At this time, the marker actuating member 27 that was locked in the locking recess 36b of the lock plate 36 is also moved to the lock plate 36 due to the movement of the spring receiving plate 25.
Since the locking recess 36b of the marker actuating member 27 is moved further rearward beyond the locking protrusion 36a at the bottom, the locking portion 27a of the marker actuating member 27 that has been locked can be pulled out from the locking recess 36b of the lock plate 36. state. Then, by rotating the hydraulic lever 12 to the upward operating position, the feed spring 4 is released.
9, the operating piece 45 contacts the right inclined portion of the chevron-shaped protrusion 40a of the swinging member 40 via the wire 47, and the swinging member 40 moves beyond the fulcrum against the elasticity of the spring 43. Since the lock plate 3 is tilted clockwise from the position shown in Fig. 3b to the position shown in Fig. 3a, the lock plate 3
6' becomes capable of locking the locking portion 27'a of the marker operating member 27', and the locking between the locking portion 27a of the marker operating member 27 and the lock plate 36 is released.

In this state, the rotation of the rice transplanter 1 is completed,
When the hydraulic lever 12 is returned to the lowering operation position to lower the planting device 15, the ram 23 of the hydraulic cylinder 22 is contracted, the planting device 15 is lowered, and the spring receiving plate 25 is moved forward accordingly. The marker actuating members 27, 27' are the springs 35,
It also tries to move forward due to the biasing force of the marker actuating member 27', but as mentioned above, the locking portion 27'a of the marker actuating member 27' engages with the locking recess 3 of the lock plate 36'.
6'b, and only the other marker actuating member 27 moves, so that only the marker 17 is protruded to the side of the machine body 16 so as to be in the working position. and,
At this time, the feed spring 49 is loosened, so that the actuating member 45 is returned by the return spring 46 to a neutral position immediately above the shaft 42 and away from the swinging member 40 as shown in FIGS. 3a and 3b. In this way, each time the hydraulic lever 12 is raised or lowered, the marker operating members 27, 27' of the left and right markers 17, 17' are unlocked alternately.
7' are alternately projected on the left and right into the working posture.

In the above embodiment, the actuating member 45 is operated by the hydraulic lever 12, but the actuating member is not limited to the hydraulic lever, but can be operated by a lever such as a planting lever that is operated when the rice transplanter 1 is rotated. 45 may be used, and furthermore, the marker operating member 2
7, 27' may be moved by raising and lowering the link 13 that supports the planting device 15 in a vertically swingable manner without linking the rearward movement of the planting device 15 with the ram 23 of the hydraulic cylinder 22.

As explained above, according to the present invention, a pair of marker actuating members are connected to the left and right markers via wires, and both the left and right markers are moved to the non-working position in conjunction with the lifting of the working device. Since the marker is configured to be forcibly moved, the marker will not be in the operating position when the paddy field work equipment is turned around or raised while driving on the road, and the marker will not damage the rice field surface or damage the marker itself. and a pair of locking devices that prevent each marker operating member from moving to the operating position when the marker operating member is in a position where the marker is placed in the non-operating position. The locking device is connected to both ends of a swinging arm that is actuated to change the tilting posture from side to side by being biased by a spring beyond the fulcrum. In conjunction with the operating lever that is operated when the operating device is turned, the swinging arm is made swingable by moving the marker actuating member based on the movement of the working device to the raised position, and the operating lever is operated. By alternately switching the tilting position of the swing arm each time, the marker actuating member is alternately locked or unlocked by the locking tool at the raised position of the working device.
Each time the operating lever is operated during rotation, the tilting position of the swing arm can be switched reliably and in a timely manner, and the marker operating member can be mechanically locked or unlocked smoothly in conjunction with this position switching operation. Therefore, the marker can be reliably switched to the working position or the non-working position, and the marker held in the non-working position can be prevented from descending during turning and damaging the rice field. . Furthermore, the left and right tilting postures of the swing arm can be switched by operating the operating lever, so when using the marker on the same side twice in a row, for example when starting planting from the center of a large field, it is possible to change the tilting position of the swing arm with the work equipment raised. Quickly operate the control lever from down to up,
If you switch markers or notice that a marker on a different side is starting to descend while the work equipment is being lowered, immediately operate the control lever to raise the work equipment without lowering it to the working position. You can perform fine-grained operations such as switching markers by pressing the button. In addition, since the swing arm and the locking device are switched at the raised position of the work device, there is no part that comes into sliding contact with the marker work member as the work device goes up and down, improving the durability and reliability of the marker device. can.

[Brief explanation of the drawing]

Figure 1 is a side view showing a riding rice transplanter to which the present invention is applied, Figure 2a is a side view showing the main parts of the planting device and marker lifting device according to the present invention, and Figure 2b is its side view. Enlarged view of partial lock plate, 3rd
FIG. 3A is a front sectional view showing the essential parts of the lifting device, and FIG. 3B is a front view showing another operating state of the swing arm. 1... Rice transplanter, 5... Traveling machine body, 12... (hydraulic) lever, 15... Planting device, 16... Machine body,
17, 17'... Marker, 22... Hydraulic cylinder,
23... Ram, 27, 27'... Marker operating member,
27a, 27'a...Locking part, 32, 32'...Wire, 36, 36'...Lock plate, 40
... Swinging arm, 43... Spring beyond the fulcrum.

Claims (1)

[Scope of Utility Model Registration Claim] A working device is attached to a traveling machine so that it can be raised and lowered freely, and left and right markers are placed on both sides of the working device in a working posture that projects to the side of the machine and a non-working posture that is stored on the side of the machine. In a paddy field work machine that is mounted so as to be movable in both postures, a pair of marker actuation members that move back and forth in response to the lifting and lowering operations of the work device are disposed on the traveling body, and these marker actuation members are connected to each other via wires. The marker actuating member is connected to the left and right markers so that both the left and right markers are forcibly moved to a non-working position in conjunction with the lifting of the working device, and the marker actuating member is located at a position where the marker is placed in a non-working position. At a certain time, a pair of locking tools are provided to prevent each marker actuating member from moving toward the operating position, and the locking tools are
It is connected to both ends of a swinging arm that is biased by a spring beyond the fulcrum and operates to change the left and right tilting posture, and the swinging arm is further linked to an operating lever that is operated when the rice paddy work machine turns. Then, by moving the marker actuating member based on the movement of the working device to the raised position, the swinging arm is made swingable, and the tilted posture of the swinging arm is alternately changed each time the operating lever is operated. A marker device for a paddy field working machine, wherein the marker operating member is alternately locked or unlocked by a locking tool at a raised position of the working device.