JPS6237922B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a marker device for a rice transplanter, and more particularly to a marker device that operates a marker in conjunction with a lift mechanism that raises and lowers a rice transplanter. be.

[Prior Art] In a conventional rice transplanter in which a rice transplanter is attached to a traveling vehicle body so that it can be raised and lowered via a lift mechanism operated by a hydraulic cylinder device, the distance between planting rows of seedlings is maintained appropriately, and In order to improve the straightness of the machine, it is equipped with a marker to draw a reference line for the next process on the rice field during planting work. This marker is
Normally, it is pivotably attached to the machine body so that it can be rotated between a used state where it extends out to the side of the machine and draws a running reference line on the rice field as the machine moves, and a non-use state where it is stored within the width of the rice transplanter. When the rice transplanter performs planting work, it is in the active state, and when the rice transplanter is running on the road or turning around the headland in the field, it is in the inactive state.

[Problems to be solved by the invention] However, for example, when turning a headland in a field,
If you forget to put the marker out of use and turn the rice transplanter while it is still in use, the marker may knock down already planted seedlings, come into contact with the ridge, and be damaged, or even worse. There was also the operational hassle of switching the marker between a used state and a non-used state.

[Means for Solving the Problems] Therefore, the present invention makes sure that the marker is stored in an unused state when the rice transplanting machine is being lifted up, and when the rice transplanting machine turns around the headland, the marker is stored in a state where the rice has already been planted. We have developed a marker device for a rice transplanter that prevents the marker from mowing down the seedlings or damage due to the marker coming into contact with the ridge, and also allows for smooth marker switching with a simple configuration. This is what we are trying to provide.

In order to achieve this object, the present invention provides a marker on the rice transplanting machine side so that it can be switched between a used state and a non-used state, and the lift mechanism and marker are connected to each other.
The marker is interlocked so that it can be switched to a non-use state when the rice transplanting machine is lifted to a non-work state, and is movable along the direction of expansion and contraction of the piston between the main body of the hydraulic cylinder device and the piston. A restriction mechanism that includes a shaft, interlockingly connects the shaft and a wire that operates the marker, and locks the movement of the shaft when the marker is in a non-use state to prevent the marker from switching to a use state;
An operator who is provided on the side of the hydraulic cylinder device to which the wire is connected when the marker is activated, and who can switch the marker from a non-use state to a use state when releasing the lock of the restriction mechanism when the rice transplanting machine is in a lowered state. It is characterized by being provided near the driver's seat.

[Example] Hereinafter, an example of the present invention will be specifically described with reference to the drawings.

In Fig. 1, reference numeral 1 denotes a four-wheeled riding vehicle, and a rice transplanting machine 3 is attached to the rear of the vehicle so as to be able to move up and down via a lift mechanism 2 consisting of parallel links. It consists of

The rice transplanting machine 3, like the conventionally known one, has a frame 4 that also serves as a transmission case as a base, a float 5 disposed below the frame 4, and a float 5 that is tilted toward the traveling vehicle body 1 and moves back and forth in the left and right direction. It has a seedling tank 6 supported in such a manner that the seedling tank 6 is supported, and a planting body 7 that is provided so as to move up and down in opposition to the inclined lower end of the seedling tank 6. The pine-shaped seedlings placed on the rice field are taken out one by one from the seedling outlet and planted on the rice field.

As shown in FIG. 2, markers 8 are attached to the lower sides of both sides of the seedling tank 6 on support arms 4a that project from the frame 4 toward the sides of the machine body. This marker 8 is attached to a mounting seat 8a fixed to the support arm 4a.
, an arm part 8c pivotally supported on the mounting seat 8a via a pin 8b, a wire part 8d fitted into the tip of the arm part 8c so that its length can be adjusted, and the wire part 8.
d is bent at an almost right angle, and a rod-shaped synthetic resin body is fitted to the tip of the drawn part 8e.By rotating around the pin 8b, the tip of the drawn part 8e extends to the side of the fuselage. It can be moved between a used state in which the seedlings are plunged into the rice field to a predetermined depth and a non-used state in which they are stored under the seedling tank 6. In addition, a tension spring 11 is suspended between a tension member 9 attached to the mounting seat 8a and a locking part 10 provided on the arm part 8c, so that the marker 8 is always in a used state. It is energizing. Furthermore, the tip of a wire 13 that pulls the marker 8 toward the non-use state is attached to the locking portion 12 provided on the arm portion 8c on the opposite side to the locking portion 10, and this wire 13 is attached to the side of the traveling vehicle body 1. It is extending.

On the other hand, the lift mechanism 2 has its upper link 2
The rear ends of the links a and the lower links 2b are respectively pivotally connected to the rice transplanting machine 3, and the tips are pivoted to the upper position of the front link 14 whose lower part is fixed to the rear of the traveling vehicle body 1, as shown in FIG. I support you. Further, at the pivot position of the upper link 2a to the front link 14, an operating arm 15 is provided coaxially with the upper link 2a, one end of which is supported, and the other end of the operating arm 15 is fixed to the upper link 2a. , is attached via a spring case 16 to the tip of a piston 17a of a hydraulic cylinder 17 whose base end is attached to the vehicle body 1. Then, by the expansion and contraction of the piston 17a, the upper link 2a is rotated about the pivot point with the front link 14 via the operating arm 15, and moved up and down.
The rice transplanting work machine 3 is raised and lowered.

A marker pulling plate 18 is attached to the tip of the piston 17a, and this marker pulling plate 1
8, the tip of the marker pulling shaft 19 is inserted so as to be movable back and forth (in the direction of telescopic movement of the piston 17a), and a stopper 20 is fixed to the tip at a predetermined distance C. The marker pulling shaft 19 has its base end connected to the hydraulic cylinder 17.
The wire 13 is fixed to one end of a lock shaft 22 that is inserted into an insertion hole 21a that is made in the front-rear direction in a support member 21 attached to the support member 21 so as to be movable back and forth. The ends are connected. Further, an insertion hole 21b is formed in the support member 21 in the vertical direction so as to communicate with the insertion hole 21a. , which is fitted into a fitting groove 22a provided in the lock shaft 22 to form a restriction mechanism that locks the movement of the marker pulling shaft 19. One end of a wire 25 is connected to the base end of the knock pin 23,
The other end is connected to an operating lever 26 as an operating tool provided near the driver's seat 1a of the traveling vehicle body 1.

In the rice transplanter having such a configuration, when performing rice transplanting work, the rice transplanter 3 is connected via the lift mechanism 2.
is lowered to ground the float 5 on the rice field surface, and at the same time as the traveling vehicle body 1 travels, the rice transplanting machine 3 is driven to perform the planting work.

At this time, the rice transplanter needs to draw a running reference line on the rice field for the next trip in order to maintain an appropriate distance between planting rows and to improve the straightness of the machine. By pulling the operating lever 26 while the rice transplanting machine 3 is lowered, the knock pin 23 is pulled upward through the wire 25 against the elastic force of the spring 24, and the fitting groove 22 between the knock pin 23 and the lock shaft 22 is pulled upward. In other words, the restriction mechanism is released, and the marker 8 is pulled by the tension spring 11 and falls to the side of the machine as shown by the imaginary line in FIG. , at the same time, the wire 13 is pulled to the lockshaft 22 and the marker pull shaft 19.
is moved to the left in FIG. 3, and the stopper 20 is brought into contact with the marker pulling plate 18 with a narrowed interval C. and,
As the rice transplanter moves, a line of a constant depth can be drawn by the line drawing section 8e, which becomes a running reference line for the next process of the rice transplanter.

When the rice transplanter 3 is not working, such as when turning on a headland in the field or running on the road, the rice transplanter 3 is lifted up by the lift mechanism 2. This lifting operation is carried out by the hydraulic cylinder in Fig. 3. This is done by moving the piston 17a of No. 17 in the extending direction, that is, moving to the right, and rotating the upper link 2a and the lower link 2b upward about the pivot point with the front link 14. When the piston 17a moves to the right, the stopper 20 and the marker pulling shaft 19 are pulled by the marker pulling plate 8, and the lock shaft 22 and the wire 13 are also pulled together, and the marker 8 is pulled.
is raised as shown in the solid line position in FIG. 2 and the imaginary line position in FIG. 1 by pulling the tension spring 11, and is stored under the seedling tank 6 and becomes unused.

At this time, due to the movement of the lockshaft 22,
When the fitting groove 22a and the dowel pin 23 are in the fitting position, the dowel pin 23 is fitted into the fitting groove 22a by the elastic force of the spring 24, and the restriction mechanism is activated and locked, and the marker pulling shaft 19 Since the marker 8 moves while moving the marker 8, the movement can be performed easily.

That is, in this embodiment, the marker 8 becomes in use when the rice transplanting machine 3 is lowered and the operating lever 26 is pulled, and automatically changes from the used state to the non-use state when the rice transplanter is lifted up. It is stored and locked. Therefore, when traveling around the headland, the marker 8 is always stored in an unused state, and the planted seedlings are not knocked over by the marker 8, and the marker does not collide with the ridge or the aircraft flies on the road. It does not protrude to the side and become an obstacle to driving.

In the above embodiment, one set of the marker 8 and its operation mechanism was provided, but in reality,
Two sets of these are provided, and markers 8 are provided on both sides of the aircraft.
It is used selectively.

[Effects of the Invention] As explained above, according to the rice transplanter marker device according to the present invention, when the rice transplanter is lifted to the non-working state by the lift mechanism, the marker is always in the non-use state. When the rice transplanter is turned and the rice transplanter is lifted up, the marker is automatically retracted.
The rice transplanter can be rotated easily, preventing the marker from mowing down the already planted seedlings when lowering the rice transplanter to get ready for work, and preventing the marker from accidentally colliding with the ridge when planting at the edge of the ridge. There will be no damage.

In addition, since the restriction mechanism is provided on the hydraulic cylinder device side, the restriction mechanism is maintained at a predetermined constant position with respect to the shaft that is linked to the marker, and the oscillation rotation due to the operation of the lift mechanism of the hydraulic cylinder device is prevented. Exercising accurate limiting function without being affected by etc.

Furthermore, in order to put the marker into use, all you have to do is operate the control tool (control lever in the example) from the driver's seat and release the restriction mechanism, so the operation is easy and the marker on the side you need is It can be brought into use in a timely manner and smoothly.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the entire rice transplanter, Fig. 2 is a perspective view of the marker, and Fig. 3 is a side view of the entire rice transplanter.
The figure is a side view of the main parts. DESCRIPTION OF SYMBOLS 1... Traveling vehicle body, 2... Lift mechanism, 3... Rice transplanting machine, 4... Frame, 5... Float, 6... Seedling tank, 7... Planting body, 8... Marker, 9... Tension member, 1
0, 12... Locking part, 11... Tension spring, 13... Wire, 14... Front link, 15... Operating arm, 1
6...Spring case, 17...Hydraulic cylinder, 1
8... Marker pulling board, 19... Marker pulling shaft,
20...Stopper, 21...Support member, 22...Lockshaft, 23...Knock pin, 24...Spring, 25
...Wire, 26...Operation lever.

Claims (1)

[Claims] 1. A rice transplanting machine is attached to a traveling vehicle body via a lift mechanism operated by a hydraulic cylinder device, and a marker is provided on the side of the rice transplanting machine so that it can be switched between a used state and a non-used state. The lift mechanism and the marker are interlocked so that the marker can be switched to a non-use state when the rice transplanting machine is lifted to a non-working state, and a piston is provided between the main body of the hydraulic cylinder device and the piston. A shaft is provided that can move along the expansion and contraction direction of the
This shaft and a wire for activating the marker are interlocked and connected, and a restriction mechanism is provided for locking the movement of the shaft when the marker is in the non-use state to prevent the marker from switching to the use state. An operating tool is provided on the side of the hydraulic cylinder device to which the wires are connected, and when the rice transplanting machine is lowered and the restriction mechanism is unlocked, an operating tool that can switch the marker from the non-use state to the use state is installed near the driver's seat. A rice transplanter marker device installed in