JPH0242081Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a marker device in a rice transplanter, particularly a riding rice transplanter.

In general, riding rice transplanters are designed to maintain appropriate spacing between seedling planting rows and to improve the straightness of the machine.
It is equipped with a marker that allows you to draw a line on the rice field that will serve as a reference line for the next stage of machine travel during planting work. However, in the past, manual operation was required to switch the marker between the working position where it protruded to the side of the machine and the non-working position where it was stored inside the machine, so when the rice transplanter turned to the headland, the marker was moved to the non-working position. If you forget to store the marker in the holder and turn around in the working position, the marker may knock down the seedlings that have already been planted, or the marker itself may come into contact with a ridge or the like and be damaged.

Therefore, the present invention connects a marker lifting device that moves the marker between the working position and the non-working position to the lifting device of the aircraft body through a mechanical interlocking means that integrally interlocks only with the movement of the lifting device in the upward direction. A stop member is provided that interlocks and holds the left and right markers in a non-working position, and furthermore, the marker lifting device is operated by a single marker posture operating tool placed in the driver's seat of the rice transplanter, so that the left and right markers can be moved. It is an object of the present invention to provide a marker device which is configured to be able to change its posture to a working posture by selectively lowering either one of them, thereby eliminating the above-mentioned drawbacks.

Hereinafter, the present invention will be specifically explained based on an embodiment 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 the rear wheels 3, and the traveling body 5 is provided with an engine section 6 at the front, an auxiliary seedling stand 7 at the rear, and a driving section near the center of the body. Seats 9 are arranged. Further, the driver's seat 9 is provided with a seat 10 and a handle 11, and a marker operating lever 12 constituting one marker posture operating tool is installed on the lower side of the handle 11. On the other hand, link 1 is located behind the traveling aircraft 5.
A planting device 15 is swingably supported via the container 3, and the planting device 15 has a body 16 made of a transmission case or the like. Furthermore, two sickle-shaped markers 17, 17' are attached to both rear ends of the machine body 16 so as to be switchable between a working position in which they protrude to the side of the machine body and a non-working position in which they are stored in the body side. Also, on the traveling body 5 is a lifting device 1 that lifts and lowers the planting device 15.
8 and a marker lifting device 19 that operates to lift and lower the marker.

As shown in FIGS. 2 and 3, the lifting device 18 of the planting device has a hydraulic cylinder 21 fixed to the traveling body 5 via a bracket 20, and the cylinder 21 is located at the front of the body. It has a ram 22 that can protrude towards. Further, a spring holder 25 is fixed to the ram 22 by a bolt 23, and a pin 26 is attached to the tip of the ram 22.
The balancer 27 is supported rotatably in the horizontal direction. And balancer 27 ram 2
Spring support rods 29, 29' are fixed at symmetrical positions spaced apart from the support rod 2 by a predetermined distance.
Springs 30 and 30' are compressed between the spring holder 25 and the balancer 27 so as to surround the springs 9 and 29'. Further, lift rods 31 and 31' are connected to both ends of the balancer 27 so as to be able to freely rotate in the vertical direction, and the rear ends of the lift rods 31 and 31' are connected to one end arm 32a of the lower link 32 that constitutes the link 13. is connected to.

On the other hand, the marker lifting device 19 is connected to pipes 33, 3 provided near both ends of the spring holder 25.
3', and stoppers 36, 36' are fixed to the tips of the rods 35, 35'. Plates 37, 37' are fixed to the rear ends of the rods 35, 35' with nuts 39, 39, and the plates 37, 37' are attached along bars 40, 40' fixed to the bracket 20. plate 37,3
It is configured to be slidable by being guided by guide grooves 37a, 37a' formed in 7'. Furthermore, a wire 4 is attached to the rear end of the plates 37, 37'.
1, 41' are connected, and the wires 41, 4
1' intersect as shown in FIG.
As shown in the figure, the arms 4 are provided near the rotation support portions 17a of the markers 17 on the opposite sides.
It is connected to 2. Therefore, the spring holder 25, the pipes 33, 33', the rods 35, 3
5', stopper 36, 36', plate 37, 3
7', nuts 39, 39' and wires 41, 4
1' constitutes a mechanical interlocking means that integrally interlocks only the upward movement of the lifting device 18 of the planting device with the markers 17, 17'. In addition, Rod 35,3
As shown in FIG. 6, the length of the planting device 15 is determined even when the planting device 15 is raised and lowered to correspond to variations in the depth of the tiller (for example, 0 to 400 mm). Even if the spring holder 25 moves by a predetermined length L based on the extension of the ram 22 of the hydraulic cylinder 21 in the attached state, the holder 25 does not close to the rod stopper 3.
It is set so that it does not come into contact with 6, 36',
Therefore, the rod length L constitutes a play mechanism that prevents the markers 17, 17' in the working position from being moved to the non-working position when the planting device 15 moves within a predetermined range in the planting state. .

Further, as shown in FIG. 2, wing parts 20a and 20a' are provided on both sides of the bracket 20, and stop pins 45 and 45' are slidably fitted into the wing parts 20a and the bracket 20, and a pin 46 ,46
The stop pin is urged outward from the bracket 20 by the springs 47, 47. That is, the stop pin 45 moves the plate 37 and projects outward when the marker 17 reaches the uppermost position.
It is set to lock the plate 37.
Also, the stop pins 45, 45' are attached to the bracket 2.
0, and is slidably fitted onto the slide plate 79, and is prevented from coming off by pins 50, 50'. Furthermore,
A crank-shaped arm rod 51 is pivotally attached to the center of the slide plate 49, and the arm rod 51 penetrates into the driver's seat 9, and the marker operating lever 12 is attached to the tip of the arm rod 51.
is fixed.

Since this embodiment has the above-described configuration, when performing planting work using the riding rice transplanter 1, the planting device 15 is driven in a lowered state, and the marker 17' on the non-planted side is placed on the rice transplanter 16. The traveling machine 5 is moved forward along the line drawn by the marker 17 in the previous step while in a working posture protruding laterally.
After completing one stroke of planting work, in order to turn the rice transplanter 1 on the headland, the ram 22 is first projected forward by the hydraulic cylinder 21, and the , the lower link 32 of the link 13 is rotated upward to raise the planting device 15. At this time, as the ram 22 moves forward, the spring holder 25 also moves forward as shown in FIG. The rod 35 is moved forward. Further, as the rod 35 moves forward, the plate 37 moves along the guide groove 37a and pulls the wire 41 forward, and as shown in FIG. Rotate in direction A. Then, the planting device 15 reaches the most extended position by the ram 22, and the rod 35 linked to the ram 22 also reaches the forward position, as shown by the chain line in FIG. When raised to position H, the stop pin 45 is pushed outward by the spring 47 and locks the plate 37. Note that the other marker 17 is housed in the non-working position regardless of the raising and lowering operation of the planting device 15 because the plate 37' remains locked by the stop pin 45'.
As a result, both markers 17 and 17' are held in the non-working position H stored above the machine body 16, and the raising operation of the planting device 15 is also completed, so that the rice transplanter 1 is rotated in this state. do. In addition, when the planting device 15 is lifted and supported by the lifting device 18, the balancer 27 is rotatably supported by the pin 26 and biased by the springs 29, 29'. 15, the seedling stand 60 is rarely in the center position, and therefore its center of gravity is often off-centered.As a result, the planting device 15 is rarely hung and held horizontally. , the markers 17, 17' are pulled up by a spring holder 25 that is kept in a predetermined posture perpendicular to the traveling body 5, so that they are always aligned with the traveling body 5 regardless of the inclination of the planting device 15.
It is held at a predetermined standing angle with respect to.

Then, when the rotation of the rice transplanter 1 is completed and the planting device 15 is to be lowered again, it is done in exactly the same way by retracting the ram 22 of the hydraulic cylinder 21 in the opposite manner to the above, but the planting device 15 is lowered, the plates 37, 37' are securely locked by the action of the stop pins 45, 45', and cannot be moved backwards, so the marker is inserted through the wires 41, 41'. 17, 17' remain locked in the non-working position. Next, when lowering the marker 17 located on the opposite side to the previous step, that is, the unplanted side, to the field, the driver's seat 9
2. Tilt the marker operation lever 12 provided in the direction D shown in FIG. Then, the arm rod 57 rotates in the direction of the arrow E as shown in FIG.
7 in the direction of arrow F, plate 37'
The lock is released, and the plate 37' becomes movable. As a result, since the load of the marker 17 is constantly acting on the plate 37' via the wire 41', the plate 37' immediately moves in the direction of the arrow G.
At the same time, the wire 41' is loosened, and the marker 17 rotates in the direction of arrow B, protruding to the side of the machine body 16, and assumes a working position in which it lands on the rice field.

As explained above, according to the present invention, the marker lifting device 19 for moving the markers 17, 17' between the working position and the non-working position is arranged in conjunction with the lifting device 18 of the planting device 15. Marker 1 when the planting device 15 is raised when turning or traveling on the road.
7 and 17' are not in the working position, it is possible to prevent the markers from mowing down seedlings or damaging the markers themselves, and to ensure that the timing of raising the markers is always constant. In addition, the wires 41, 41' are unidirectional, so the wire resistance is low, and the markers 17, 1
The lifting and lowering operation of 7' becomes smoother. Furthermore, the marker lifting device 19 can be operated by one marker posture operating tool 12 disposed on the driver's seat 9 of the rice transplanter 1 to selectively lower one of the markers to change the posture to the working posture. As a result, the operator can easily locate both markers 1 in the driver's seat 9.
7, 17' without making any erroneous operations such as descending.
The marker can be reliably operated in a working position.

Furthermore, since the marker is forcibly moved to the non-working position in conjunction with the raising operation of the planting device 15 via the mechanical interlocking means, there is no need for a special drive device such as a solenoid for raising and lowering the marker. can be constructed easily and inexpensively, and when the planting device 15 is in the raised state, the markers 17, 17' can be reliably placed in the non-operating position. In addition, since the left and right markers 17, 17' are held in the non-working position by the stop members 45, 45', there is no need for any special holding operation such as continuing to supply current to maintain the markers in the non-working position. The marker can be reliably held in a non-working position during use. In addition, the marker posture operating tool 12 is operated by the stop members 45 and 4 only when switching the non-working posture of the marker.
Since it is sufficient to release the holding action of 5', there is no need to continuously maintain the operating state such as keeping the contact in the connected state. This ensures that markers 17 and 17' do not fall into their working positions due to malfunctions due to electrical system failures, making it impossible to plant, mowing down seedlings, or even damaging the markers themselves. This can improve the reliability of the marker device.

[Brief explanation of drawings]

Fig. 1 is a side view showing a riding rice transplanter to which the present invention is applied, Fig. 2 is a plan view showing the main parts of the planting device and marker lifting device according to the present invention, and Fig. 3 is the same as Fig. 2. 4 is a side view showing the rotating part of the marker, FIG. 5 is a plan view showing the operation of the marker lifting device, and FIG. 6 is a plan view showing the relationship between the spring holder and the rod. It is. 1... Rice transplanter, 5... Traveling machine body, 12... Marker posture operating tool, 15... Planting device, 16... Body, 17, 17'... Marker, 18... Lifting device,
19... Marker lifting device, 25, 33, 33',
35, 35, 37, 37', 41, 41'... Mechanical interlocking means, 37, 37'... Connection member (plate), 45, 45'... Stop member (pin).

Claims (1)

[Scope of Claim for Utility Model Registration] A working posture in which a planting device is supported in a traveling machine body having a driver's seat so that it can be raised and lowered by an elevating device, and markers are protruded laterally on both sides of the planting device, and the device side In the rice transplanter, the rice transplanter is installed so as to be switchable between a non-working position and a non-working position, wherein the marker is integrally linked to a lifting device of the planting device only when the lifting device moves in an upward direction,
a mechanical interlocking means for forcibly moving the marker from the working position to the non-working position; a stop member that abuts a connecting member connected to the left and right markers to hold the markers in the non-working position; and the driver's seat. a marker posture operating tool disposed at the left and right stop members for selectively lowering one of the left and right markers to change the posture to a working posture by releasing the holding action of the left and right stop members; A marker device in a rice transplanter characterized by: