JPH0212808Y2 - - 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. Furthermore, a device has been proposed in which the marker is linked to a link that supports the planting device, and the marker is raised as the planting device rises. Because the left and right links are swingably supported by the machine body so that they can freely roll and pitch together, the left and right links do not always rise to a fixed position when the planting device is raised. It was not possible to accurately raise the left and right markers at a constant height position. Furthermore, when planting at the edge of a ridge, the marker moves to a working position in conjunction with the lowering of the planting device, and there is a risk of damaging the marker.

Therefore, in the present invention, a pair of actuating members are arranged so as to be able to slide approximately parallel to each other in the expansion and contraction direction of the ram of the hydraulic cylinder for raising and lowering the planting device, and these actuating members are linked to the ram of the hydraulic cylinder. and are connected to the left and right markers via wires, respectively, so that the markers are moved to a non-working position in conjunction with the raising of the planting device based on the extension of the ram, and the marker is placed in a position where the marker is placed in a non-working position. When each actuating member is present, a locking member that engages with the locking portion of each actuating member is provided to lock both actuating members regardless of the expansion and contraction movement of the ram, and furthermore, the locking member is provided with a locking member that engages with the locking portion of each actuating member. It is an object of the present invention to provide a marker device for a rice transplanter, in which the above-mentioned drawbacks are solved by connecting and configuring operating tools that can be disengaged.

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 operation lever 12 is installed on the lower side of the handle 11. On the other hand, a planting device 15 is swingably supported behind the traveling body 5 via a link 13, and the planting device 15 has a body 16 made of a transmission case or the like. Furthermore, the aircraft 16
There are two sickle-shaped markers 17, 1 on both rear ends.
7' is attached so that it can be moved freely between a working position where it protrudes to the side of the aircraft and a non-working position where it is stored on the side of the aircraft.
Moreover, a lifting device 18 for lifting and lowering the planting device 15 and a marker lifting device 19 for lifting and lowering the marker are installed on the traveling body 5.

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'. That is, the rods 35, 35' and the plates 37, 3
7' are fixed together to constitute a pair of actuating members, and these actuating members of the marker are slidably disposed substantially parallel to the direction of expansion and contraction of the ram 22 of the hydraulic cylinder 21. The actuating member is not limited to a plate shape, but may be a rod shape, as long as the marker can be pulled up and locked by the locking member when the marker is held in a non-working position. 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. In addition, rod 35, 35'
As shown in FIG. Even if the spring holding fitting 25 moves a predetermined length L based on the extension of the ram 22 of the hydraulic cylinder 21, the holding fitting 25 moves to the rod stopper 36,
36', and therefore the rod length L is set so as not to contact the planting device 1 in the planting state.
5, the markers 17, 17' in the working position constitute a play mechanism in which the markers 17, 17' are not moved toward the non-working position.

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 pins 45, 45' are connected to the plates 37, 3
7' is operated so that the markers 17, 17' protrude outward when they are suitable for the non-working position, forming a locking member that engages with locking portions 37b, 37b' formed from the end faces of the plate. Also, stop pins 45, 4
5' is the slide plate 49 inside the bracket 20.
It is slidably fitted in and is prevented from coming off by pins 50, 50'. Further, 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 a marker operating lever 12 constituting an operating tool is fixed to the tip of the arm rod 51. has been done.

Since this embodiment has the above-described configuration, when carrying out rice 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 machine body 16 side. In the state of the working posture protruding toward the direction, the traveling body 5 is moved forward along the line drawn by the marker 17 in the previous step.
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 that comes into contact and constitutes the actuating member 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 its most extended position by the ram 22, and the rod 3, which is interlocked with the ram 22,
5 also reaches the frontmost position and the marker 17' rises to the non-working position H, as shown by the chain line in FIG.
A stop pin 45 is projected outward by a spring 47 and engages with a locking portion 37b of the plate 37 to lock the plate. Note that the other marker 1
Since the plate 37' remains locked by the stop pin 45', the planter 7 is stored in the non-working position regardless of the raising and lowering operation of the planting device 15. As a result, both markers 17, 1
7' is a non-working position H stored above the fuselage 16.
At the same time, the raising operation of the planting device 15 is also completed, and therefore, the rice transplanter 1 turns around in this state.
Note that when the planting device 15 is lifted and supported by the lifting device 18, the balancer 27 is rotatable by the pin 26 and is supported by the springs 29, 2.
Since the planting device 15 is biased and supported by the seedling support 9', the seedling stand 60 of the planting device 15 is rarely in the center position, and the center of gravity is often offset. Although the attachment device 15 is rarely hung and held horizontally, the marker 17,
17' is pulled up by a spring holder 25 that is kept in a predetermined posture perpendicular to the traveling body 5, so that it always stands in a predetermined position with respect to the traveling body 5, regardless of the inclination of the planting device 15. held at an angle.

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 contracting 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. Therefore,
In the planting work at the edge of the ridge where it is necessary to perform the planting work with both markers 17, 17' stored, the planting work is performed in this state. In addition, when lowering the marker 17 located on the opposite side to the previous step, that is, on the unplanted side, to the field, move the marker operating lever 12 provided on the driver's seat 9 in the direction D shown in FIG. knock down. Then, the arm rod 57 rotates in the direction of the arrow E as shown in FIG. The lock of the plate 37' 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 arrow G, and at the same time, the wire 41' is loosened and the marker 17 moves in the direction of arrow B. It rotates, protrudes to the side of the machine body 16, and assumes a working posture in which it lands on the rice field.

As explained above, according to the present invention, the pair of actuating members 35, 35', 37, 3 are slidably arranged substantially parallel to the direction of expansion and contraction of the ram 22 of the hydraulic cylinder 21.
7', and these actuating members are linked to the ram of the hydraulic cylinder and connected to the markers 17, 17' via wires 41, 41', respectively.
Since the marker is moved to a non-working position in conjunction with the raising of the planting device 15 based on the extension of the ram, the planting device 1 can be moved when turning or traveling on the road.
The markers 17, 17' are not in the working position when the robot 5 is raised, which prevents the markers from mowing down seedlings or damaging the markers themselves.The markers are operated by the ram of a hydraulic cylinder. Since the marker is raised by being actuated directly through the member, the raising timing of the marker can always be kept constant, and the actuating member can be locked by the locking members 45, 4.
In addition to being locked in the non-working position by 5', the non-working position of the marker is completely unaffected by the swinging of the planting device, and can be raised and held at the same position on the left and right sides. This makes it easier to manage the dimensions of the markers, and since the wires 41, 41' are unidirectional, the wire resistance can be reduced. In addition, lock members 45 and 45' are provided that engage with the locking portions 37b and 37b' of each actuating member when each actuating member is in a position where the marker is placed in a non-working position, thereby allowing the ram to extend and retract. Since both actuating members are locked regardless of the situation, and the operating tool 12 that can release the engagement with the actuating member is connected to the locking member, it is possible to do so at the edge of a ridge where it is necessary to carry out planting work with the marker stored. It is convenient for planting work, etc., and the operation of the operating tool 12 is simple, as it is sufficient to release the lock member 45.

[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... Operating tool, 15... Planting device, 16... Machine body, 17,1
7'...Marker, 21...Hydraulic cylinder, 22...
...Ram, 35, 35', 37, 37'... Operating member, 37b, 37b'... Locking part, 41, 41'...
...Wire, 45, 45'...Lock member.

Claims (1)

[Scope of utility model registration request] A planting device is attached to the traveling machine so that it can be raised and lowered by expanding and contracting the ram of a hydraulic cylinder, and the planting device has two positions on both sides of the machine: a working position in which markers are protruded to the sides of the machine, and a non-working position in which markers are stored on the machine body. In a rice transplanter movably attached to a rice transplanter, a pair of actuating members are disposed to be slidable approximately parallel to the expansion and contraction direction of the ram of the hydraulic cylinder, and these actuating members are linked to the ram of the hydraulic cylinder. and a position where the marker is connected to the marker via a wire, and is configured to move the marker to a non-working position in conjunction with the raising of the planting device based on the extension of the ram, and a position where the marker is placed in the non-working position. when each of the operating members is located at the ram, a locking member that engages with a locking portion of each operating member is provided to lock both operating members regardless of the expansion and contraction movement of the ram, and the locking member further includes: A marker device in a rice transplanter configured by connecting an operating tool that can be disengaged from the operating member.