JPH0220885Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a marker device for a walking rice transplanter that draws a mark line in a rice field for guiding the machine next time.

``Prior art'' Conventionally, as shown in Japanese Utility Model Application Publication No. 52-52517, there is a technology in which marker arms are provided on both sides of the rice transplanting machine body, and the marker arms are raised and lowered to a non-working position or a working position in conjunction with a planting clutch lever, etc. It was hot.

"Problems to be Solved by the Invention" The prior art uses an electromagnetic solenoid to move the marker arm to a non-working position, and then uses the marker arm's own weight to move it to an active position, so it is difficult to install the solenoid and electric circuit. This makes it difficult to reduce manufacturing costs, and there are problems such as the trouble of waterproofing the solenoid and poor durability.Also, turning off the power to the solenoid due to the cancellation of rice planting, etc., causes the marker arm to be damaged. Since the marker arm is maintained in the working position, there are structural and functional problems such as the possibility that the marker arm collides with the ridge and is damaged when moving over the ridge.

Furthermore, as shown in Japanese Utility Model Publication No. 53-34256, there is a technique in which marker arms are provided on both sides of a walking rice transplanter, and the marker arms are moved to a non-working position in conjunction with the cutting operation of the planting clutch lever. ,
Since the marker arm was moved to the working position in conjunction with the engagement of the planting clutch lever, the left and right marker arms moved to the working position at the same time. The marker arm also has a problem in shifting to the working position, and the marker arm on the planted side tends to tilt the planted seedlings, and the marker arm on the planted side tends to disturb the field surface, and the marker arm does not move the lines into the planted seedlings. By forming it on the side of the rice field, there were functional problems such as fertilizer accumulating in these lines, making the fertilization effect uneven. Therefore, by changing the direction of the rice transplanter, the left and right marker arms were alternately shifted to the working position.
Although there is a technology that has a mechanism for separately using the left and right markers to hold the marker arm on the implanted side in a non-working position, the structure for switching the marker arm is complicated, making it easier to simplify the marker arm support structure and reduce manufacturing costs. There were unforeseen problems.

``Means for Solving the Problems'' However, in the present invention, a seedling platform that is wide in the left and right direction and has a low front and rear height is provided at the rear of the rice transplanting machine, and a steering handle is provided at the rear of the seedling platform. In a walk-behind rice transplanter, in which an operating member such as a planting clutch lever is arranged near the handle on the back side of the seedling table, and marker arms with muscle-pulling marker parts are provided on both sides of the rice transplanter body, the bottom side of the back side of the seedling table is provided. A frame portion 30 extending in the lateral direction of the fuselage body is disposed at a position slightly inward from the left and right outer ends of the frame member 30, and a marker arm 48 is disengaged by a biasing means 54 so as to be rotatable in the left and right direction. The marker operating lever 31, which is biased to the working position and pivoted while being rotatable in the left-right direction, is attached to the frame member 30 on the back side of the seedling stand 9.
The seedling support bracket 50 located higher up is pivotally supported to be operable from the aircraft control position, and the marker arm and the marker operation lever are interlocked and connected via a rod, and the marker arm is not activated. The rotation prevention member is interlocked and connected to the lever in order to release the rotation prevention by cutting the planting clutch of the planting clutch lever. The present invention is characterized in that the rotation preventing member is configured to act near the pivot portion.

``Function'' Therefore, since the marker arm and the marker operating lever are rotatably provided between the back of the seedling platform and the operator's operating position, interference with the horizontally moving seedling platform is prevented, and the marker arm and Since the marker operation lever can be arranged compactly and the marker arm is supported in the non-working position by the biasing means, the marker arm can be maintained in the non-working position except when necessary and work can be carried out safely. Since the operator at the aircraft control position moves the marker arm to the working position by operating the marker operating lever, there is no need for a switching mechanism that requires the conventional technology to alternately use the left and right marker arms by changing the direction of the aircraft. It is possible to easily move only the marker arm on the non-implanted side to the working position, and the simple structure improves the switching function of the marker arm and simplifies handling operations, and it is also easier to move the marker arm on the non-implanted side to the working position. The rotation prevention member is released by the planting clutch disengagement operation of the planting clutch lever, and the biasing means moves the marker arm to the non-operating position. It can be easily obtained, eliminates the need for electrical equipment, stabilizes the operation, and reduces manufacturing costs.Furthermore, it eliminates the need for a structure in which the left and right marker arms can be used separately, which is the conventional technology, making it easier for operators at the control position. Only the marker arm on the non-implanted side can be moved to the working position by a simple operation, and the marker arm switching function can be easily improved with a simpler marker arm support structure compared to conventional ones.Furthermore,
Since the marker arm is pivoted at a point slightly inward from the left and right outer ends of the frame member located on the lower side of the back of the seedling table, it is possible to prevent the marker pivot from interfering with the ridges and damaging it. Moreover, since the marker operation lever is pivotally supported on the seedling platform support bracket located above the frame member, the seedling platform support bracket can of course also be used as a support member for the marker operation lever.
The length of the marker operation lever itself can be shortened,
In addition, since the rotation prevention member acts near the pivot portion of the marker arm, compared to a structure in which rotation is prevented by acting on the marker operation lever, the pushing-up force that tends to act on the marker arm during line drawing is reduced to the marker arm. Since the marker operating lever and rod are securely supported near the pivot point, the above-mentioned acting force is hardly applied to the marker operating lever and rod.Therefore, there is no need to extremely increase the strength of the marker operating lever and rod. Both members can be constructed simply.

"Embodiment" Hereinafter, an embodiment of the present invention will be described in detail based on the drawings.

Fig. 1 is a schematic side view of a four-row rice transplanter, and Fig. 2 is a plan view of the same. The main transmission case 4 is fixed to the main transmission case 3 through the transmission case 5, and the planting transmission case 6 is a main planting case fixed to the main transmission case 3 via the transmission case 5. A planting chain case, which is a sub-planting case that supports through
8 is a steering handle whose base end is connected and supported by the cases 4 and 6; 9 is a guide rail 10 and a sliding rail 1;
1 is a seedling stand installed along the upper surface of the handle 8 and reciprocated from side to side, with a front and rear height, and 12 is a planting melon for taking out one seedling from the seedling stand 9 and planting it; 13; 14 is a center marker; 15 is a paddy field wheel supported on the side of the main transmission case 3 via a swing case 16 and an axle 17; 18 and 19 are buffers. Center and side floats supported by the machine body via members 20, 21 and planting depth adjustment lever 22, 23 is a spare seedling stand, 24 is a recoil start handle, 25 is a side clutch lever, 26 is a swing lever, 2
7 is a planting clutch lever, 28 is a main clutch lever 29, a tension marker whose base end is rotatably attached to the left and right outer end sides of the guard frame 30, 31 is a marker operation lever, 32 is a wheel entry/exit lever,
The seedlings loaded on the seedling stand 9 are taken out by a planting melon 12, and each seedling is successively planted in the rice field.

As shown in FIGS. 3 and 4, an input transmission shaft 34 for transmitting the output from the planting transmission case 4 via a rotating shaft 33 is mounted on the planting chain case 6. The rotational force is transmitted via the sprocket 35, chain 36, and sprocket 37 to the planted melon drive transmission shaft 38 provided on the lower end side of the case 6, and the planted melons 12 disposed on the outermost left and right sides thereof.
It is configured to drive.

Each of the transmission shafts 34 and 38 has bearing metals 41a and 41 attached to each bearing portion 39 and 40 of the chain case 6, respectively.
b, 42a, 42b, respectively, to reduce the total weight of the chain case 6 and to balance the front-rear balance of the fuselage.
By increasing the rotational resistance by 2b, the shock caused by the non-uniform motion of the planted melons 12 is alleviated, and the torque fluctuation accompanying this is reduced, thereby improving the top stopping performance of the planted melons 12. ing.

As shown in FIGS. 5 and 6, a plurality of reinforcing plates 46 are provided between the centers of a plurality of spokes 45 provided between the rim 43 and the boss 44 of the wheel 15, and are adjacent to the box 44. spoke 45
The end faces of each reinforcing plate 46 are brought into contact and fixed at approximately the center of the spoke width T, so that the reinforcing plate 46 is housed within the width T without protruding beyond the spoke width T, and the difference in formation between them is also reduced. It consists of

As shown in FIGS. 7 to 9, the striped marker 29 is located at a position slightly inward from the left and right outer ends of a guard frame 30 that extends in the lateral direction of the machine at a lower position on the back side of the seedling stand 9. A seedling support bracket 50 of the seedling support frame 49 rotatably supports the base end of the marker arm 48 via a shaft 47 and is located above the guard frame 30 on the back side of the seedling support 9.
A rod 52 connects the intermediate arm 48 to the lever 31 whose base end is rotatably supported via a shaft 51.
They are interlocked and connected via the lever 31, so that when the lever 31 is operated, the muscle marking marker 29 is appropriately brought down and protruded to the outside of the machine body. Further, the muscle marker 29 is always erected between the base end of the arm 48 and the guard frame 30, and the operating lever 31 is attached to the stopper 53 of the bracket 50.
A spring 54, which is a biasing means that has a biasing force to keep the two in contact with each other, is interposed.

On the other hand, a holder 55 is fixed to the guard frame 30 to stop the base end of the arm 48 from moving downward at the lowest position when the muscle marker 29 is laid down, and a holder 55 to prevent the arm 48 from moving upward. The movement blocking member 56 is configured to be rotatably attached via a pin 57. An upper movement preventing stepped surface 56a of the arm 48 is formed at one end of the rotation preventing member 56, and a spring 58 and a wire 5 are formed at the other end.
9. Interlockingly connect to the fixed arm 61 at the base end of the planting clutch lever 27 via the wire 60, and rotate the rotation prevention member 56 at the same time as the clutch lever 27 is disconnected, so that the prevention step surface 56a is separated from the arm 48, the marker 29 is erected by the force of the spring 54, and is housed inside the body. The clutch lever 27 has its base end pivotally supported on a lever shaft 62, and is connected to the planting clutch via a clutch link 63 and a clutch wire 64 to connect and disconnect the planting clutch.

The present embodiment is constructed as described above, and when the muscle pulling marker 29 on either the left or right side is projected to the outside of the machine body prior to the current work and is to be held in the operating state, the lever 31 is moved as shown in FIG. When the arm 48 is tilted sideways to the imaginary line state position, the arm 48 rotates the shaft 47 against the fulcrum spring 54 via the rod 52, and the marker 29 is brought into a horizontal state.
protrudes to the outside of the fuselage and moves to the working position.
When the clutch lever 27 is turned on in this state, the wire 59 is loosened and at the same time the spring 58 acts to rotate the blocking member 56 from the imaginary line state in FIG. 9 to the solid line state, and the blocking step surface 56a Therefore, the upper side of the arm 48 is closed to prevent its upward movement. As a result, regardless of the lever 31, as long as the planting clutch remains in the engaged state, the streak marker 29 is fixed at its downward movement position, and while the vehicle is running, marking lines are sequentially applied to the non-planted side. .

During the planting operation in which one seedling is taken out from the seedling stand 9 using the planting melon 12 and planted one by one, the seedling taking-out operation by the non-uniform movement of the planting melon 12 is performed using the transmission shaft. 34,38 metal 41
The a, 41b, 42a, 42b bearing structure effectively alleviates shocks, vibrations, etc. during interlocking, allowing smooth operation and good operation without malfunction.

Furthermore, while the paddy field wheels 15 are running, the reinforcing plate 46 structure eliminates the mud lifting phenomenon that occurs in the past, and furthermore, the metal wheels 15
Together with the bearing structures b, 42a, and 42b, the weight of the machine can be reduced, and its running performance and operability are improved.

On the other hand, when the streaking marker 29 is not used, such as when the machine is rotated, when the planting work is finished, or when driving on the road, the planting clutch lever 27 is turned off to prevent the blocking member 56 from The upward motion prevention of the arm 48 is released, and the tension marker 29 is automatically retracted inside the body by the return action force of the spring 54, and transferred to a non-working position.

"Effects of the Invention" As is clear from the above embodiments, the present invention has a seedling platform 9 which is wide in the left and right direction and has a low front and rear height at the rear of the rice transplanting machine, and a steering handle 8 behind the seedling platform 9. In addition, operating members such as a planting clutch lever 27 are arranged near the handle 8 and on the back side of the seedling stand 9, and marker arms 48 having a muscle pulling marker 29 are provided on both sides of the rice transplanting machine body. In the machine, a frame member 30 extending laterally of the machine body is disposed at a lower position on the back side of the seedling table 9, and the frame member 30 is rotatable in the left-right direction at a position slightly inward from the left and right outer ends of the frame member 30. While the marker arm 48 is urged to a non-working position by the urging means 54 and pivoted, the marker operating lever 31, which is rotatable in the left and right direction, is moved to the back side of the seedling stand 9 by the frame member 30.
The seedling support bracket 50 located higher up is pivotally supported to be operable from the aircraft control position, and the marker arm 48 and the marker operating lever 31 are interlocked and connected via a rod 52, and the marker arm 48 in the non-operating direction, and the rotation prevention member 5 is attached to the lever 27 in order to release the rotation prevention by cutting the planting clutch of the planting clutch lever 27.
6 are interlocked and connected, and the marker arm 48
The rotation prevention member 56 is configured to act near the pivot portion of the marker arm 48 and the marker operating lever 31 are rotatably provided between the rear surface of the seedling platform 9 and the operating position of the operator. Therefore, the marker arm 48 and the marker operating lever 31 can be arranged compactly by preventing interference with the seedling table 9 that moves laterally, and the marker arm 48 is supported in a non-operating position by the biasing means 54. The marker arm 48 can be maintained in a non-working position except when necessary, allowing work to be carried out safely, and the operator in the aircraft control position can shift the marker arm 48 to the working position by operating the marker operating lever 31. This eliminates the need for a conventional switching mechanism for alternately using the left and right marker arms 48, 48 by changing the direction of the aircraft, and simplifies the operation of shifting only the marker arm 48 on the unplanted side to the working position. With a simple structure, it is possible to improve the switching function of the marker arm 48 and simplify handling operations, etc., more easily than before. Since the movement preventing member 56 is released and the biasing means 54 moves the marker arm 48 to the non-operating position, the linkage structure between the planting clutch lever 27 and the marker arm 48 can be simply obtained with a mechanical structure. , it is possible to easily stabilize the operation and reduce manufacturing costs by making the electrical equipment inconvenient, and it is also inconvenient to use the left and right marker arms 48, 48 separately, which is the conventional technology, making it easier for the operator at the control position. Only the marker arm 48 on the non-implanted side can be moved to the working position by a simple operation, and the marker arm 48 can be provided with a simpler support structure for the marker arm 48 than in the past.
8 switching function can be easily improved, and the frame member 30 at the lower position on the back side of the seedling stand 9 can be easily improved.
Since the marker arm 48 is pivoted at a location slightly inward from the left and right outer ends of the marker arm 48, it is possible to prevent the marker pivot portion from interfering with the ridges and the like and being damaged. By pivoting the seedling stand support bracket 50 located above the frame member 30, it is possible to not only use the seedling stand support bracket 50 as a support member for the marker operation lever 31, but also to reduce the length of the marker operation lever 31 itself. The structure can be shortened, and since the rotation prevention member 56 acts near the pivot portion of the marker arm 48, it acts less on the marker arm 48 during line drawing compared to a structure in which rotation is prevented by acting on the marker operation lever 31. The pushing-up force is reliably supported near the pivot portion of the marker arm 48, so that the above-mentioned force is hardly applied to the marker operating lever 31 and the rod 52, and therefore the marker operating lever 31
It is not necessary to extremely increase the strength of the rod 12, and these two members can be simply constructed.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of a rice transplanter showing an embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is an explanatory view of the planting case, Fig. 4 is an enlarged explanatory view of the same part, and Fig. 4 is an explanatory view of the planting case. Fig. 5 is an enlarged explanatory view of the wheel portion, Fig. 6 is an explanatory cross-sectional view of the same part, Fig. 7 is an explanatory view of the striation marker part, Fig. 8 is a - line view of the previous figure, and Fig. 9 is the same view. FIG. 8... Steering handle, 9... Seedling stand, 27...
Planting clutch lever, 29... muscle pull marker, 3
DESCRIPTION OF SYMBOLS 1... Marker operation lever, 48... Marker arm, 52... Rod, 54... Spring (biasing means), 56... Rotation prevention member.

Claims (1)

[Scope of utility model registration request] A seedling platform 9 is provided at the rear of the rice transplanting machine, which is wide in the left and right direction and has a low front and back height.
In a walk-behind rice transplanter, in which an operating member such as a planting clutch lever 27 is arranged on the back side, and a marker arm 48 having a tension marker 29 is provided on both sides of the rice transplanting machine body, the machine body is located at a lower position on both sides of the seedling platform 9. A frame member 30 extending laterally is provided,
The marker arm 4 is rotatable in the left and right direction at a position slightly inward from the left and right outer ends of the frame member 30.
The marker operating lever 31, which is rotatable in the left-right direction, is pivoted to support the seedlings positioned above the frame member 30 on the rear side of the seedling stand 9. The marker arm 48 and the marker operating lever 31 are interlocked and connected via a rod 52, and the marker arm 48 is moved in the non-operating direction. The rotation prevention member 56 is interlocked and connected to the lever 27 in order to release the rotation prevention by disconnecting the planting clutch of the planting clutch lever 27. A marker device for a walk-behind rice transplanter, characterized in that the rotation preventing member 56 is configured to act near the pivot portion of the arm 48.