JPS6245531Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a steering device for a rice transplanter that is equipped with streak markers on the left and right sides of the machine to form the next planting travel trajectory on the non-planted side during planting travel.

Conventionally, as shown in Japanese Utility Model Publication No. 53-46175, there has been a technique in which the left and right markers are lowered using a single operating lever.

However, in the prior art, since the arms connected to the left and right markers are guided in movement by the left and right guide grooves, the amount of left and right movement of the operating lever for lowering the markers is large, and it is difficult to form the guide grooves. This requires a guide plate with a large area, making it difficult to downsize the operating lever support structure and reduce manufacturing costs.

However, the present invention provides an apparatus that is provided with a single operating lever for lowering the left and right markers, and is provided with a guide groove for guiding the movement of the operating lever.
A left and right long groove is provided with an arm that is interlocked with the left and right markers, and a lowering regulating member that engages the arm to support the marker upwardly, and that moves the operating lever to release the engagement operation between the arm and the lowering regulating member. is formed on one end side of the guide groove.

Therefore, the amount of movement of the operating lever can be reduced compared to the conventional one, the guide groove and the long groove can be formed more compactly than the conventional one, and the operating lever support structure can be made smaller and the manufacturing cost can be lowered compared to the conventional one. It is possible to easily perform the above operations, and also to easily improve the switching operability and function of the marker.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings. Fig. 1 is a side view showing a riding multi-row rice transplanter equipped with a steering device according to the present invention, and Fig. 2 is a plan view thereof. In the figure, reference numeral 1 denotes a traveling vehicle body, and this traveling vehicle body 1 is of a bent-body type consisting of a front vehicle body 2 and a rear vehicle body 3.

4 and 5 are frames that connect the front and rear vehicle bodies 2 and 3 so that they can bend only in the horizontal direction via a center pin 6 that serves as a rotational fulcrum, and 7 is attached to the left and right sides of the front vehicle body 2 via swing cases 8. Front wheel for paddy fields, 9
11 is a gate-shaped safety frame to which the base end of the front vehicle body 2 is fixed, and 12 is a spare seedling mount attached to this safety frame 11. 13 are steps provided on both sides of the front vehicle body 2; 14 are front wheels 7;
15 is a driver's seat attached to the upper part of the rear part of the front vehicle body 2 via the safety frame 11;
Reference numeral 6 denotes a steering wheel mounted above the front part of the front body 2, and 17 denotes an engine mounted on the rear body 3, which bends both the front and rear body parts 2 and 3 appropriately around the center pin 6. It is configured to correct the running direction.

In addition, in the figure, 18 is a planting section provided in the front part of the front vehicle body 2 via a three-point link mechanism 19 so that it can be raised and lowered freely, 20 is a seedling stand with a low front and rear height that can be reciprocated from side to side, and 21 is a A planting claw that takes out one seedling from this seedling platform 20 and plants it; 22 is a transmission case to which the seedling platform 20 and planting claw 21 are attached; 23 is a float that supports this case 22; 24 is the aforementioned With the front bumper attached to the transmission case 22, the seedling stand 20
The seedlings are continuously planted by driving the planting claws 21 as appropriate.

By the way, the three-point link mechanism 19 includes a top link 25 and a lower link 26, and a lift arm 27, which is swing-operated by a hydraulic device, is connected to the lower link 26 via a lift rod 28. Each link 2 with oscillation
5 and 26 are vertically swung to move the entire planting section 18 up and down.

In addition, the bumper 24 is provided with left and right striped markers 29 and 30 that can be raised and lowered freely, and a center marker 31 is provided in the center of the bumper 24, and side markers 32 and 33 are provided on both left and right sides of the bumper 24, which can be folded back and forth and horizontally. It is possible.

As shown in FIG.
5 is fixedly installed, and the left and right markers 29, 30 are
The marker arms 36 and 37 supporting the substrate 34,
It is rotatably attached to support shafts 38 and 39 of 35, and is configured so that the streak markers 29 and 30 are appropriately projected on both left and right sides of the planting section 18.

On the other hand, the arms 36 and 37 of the streak markers 29 and 30 are attached to the planting part 18 inside the right fender 14.
A single operating lever 40 for raising and lowering is provided to the side or above.

The base end of the lever 40 is rotatably supported on a support shaft 40b, and the intermediate portion of the lever 40 is guided and supported in a guide groove 43 of a guide plate 42 via a frame plate 41.

As shown in FIGS. 4 and 5, hook arm guides 44, 44 are provided in the frame plate 41, and guide holes 4 formed in the guides 44, 44 are provided.
Left and right hook arms 46 and 47 are inserted through the arms 5 and 45, and the arms 46 and 47 are slidably supported by guides 44 and 44, respectively.

Further, the hook arms 46 and 47 are provided with hook portions 46a and 47a on one end side, and the hook portions 46 and
The lever arm portion 40a of the operating lever 40 is selectively engaged with the lever arms 40a and 47a.

Further, wire fastening parts 46b, 47b are formed on the other end sides of the hook arms 46, 47, and the fastening parts 46b, 47b are connected to the links 48, 49 integrally formed at the proximal ends of the marker arms 36, 37 via wires 50, 51. The hook arm 4 is connected to the parts 46b and 47b.
By the swinging motion of 6 and 47, the muscle pulling marker 2
9 and 30 are configured to be raised and lowered.

Furthermore, locking pieces 5 are provided near the hook portions 46a and 47a of the hook arms 46 and 47, respectively.
2, 53 are provided protrudingly, and the locking pieces 52, 5
The latches 54, 5 are lowering regulating members for latching 3.
5 is provided on the inner wall of the frame plate 41, and when the hook arms 46, 47 are moved to the right sliding end position in FIG. 54,55
The hook arms 46, 47 are held in that position.

Further, as shown in FIG. 5, a return spring 56 for rotating the lever 40 in a clockwise direction is stretched over the operating lever 40, so that the markers 29, 30 are in the raised state, that is, the hook arm 46,
47 is at the right sliding end position in the figure, the lever 40 can selectively engage with either the left or right hook portions 46a, 47a under the guidance of the left and right long grooves 43a of the guide groove 43 in this position. The configuration is such that the left or right selection of the markers 29, 30 to be lowered can be made arbitrarily.

The present invention is constructed as described above,
During normal road driving, the locking pieces 52, 53 are engaged with the latches 54, 55, and the hook arms 46, 47 are held at the right sliding end position in FIG. , 30. At this time, the operating lever 40 is moved to the marker 2 by the action of the return spring 56.
It is always located on the raised side of 9,30.

Therefore, if the right side creasing marker 30 is to be lowered to perform creasing with a travel trajectory on the unplanted side, the operating lever 40 is moved along the long groove 43a of the guide groove 43, and the hook portion of the right hook arm 47 is moved. 47a, and after this engagement, the operating lever 40 is further tilted slightly toward the raised side of the marker 30, and the hook arm 47 is pulled to release the locking piece 53.
is removed from the latch 55, and then the operating lever 40 is tilted toward the marker lowering side as shown in FIGS. 3 and 4. As a result, the wire 51 that holds the right tension marker 30 in the raised position is loosened, and the marker 30 is lowered by its own weight. In addition, when using the left muscle pulling marker 29, with the right muscle pulling marker 30 held in the raised position, the operation lever 40 is engaged with the hook portion 46a of the left hook arm 46, and Similarly to the muscle marking marker 30, this left muscle marking marker 29 is lowered.

As is clear from the above embodiments, the present invention is an apparatus that is provided with a single operating lever 40 for lowering the left and right markers 29, 30, and is provided with a guide groove 43 for guiding the movement of the operating lever 40.
an arm 46 linked to the left and right markers 29, 30;
47, and a descending regulating member 5 that engages the arms 46, 47 and supports the markers 29, 30 upwardly.
4, 55, and a left and right long groove 43a for moving the operating lever 40 to release the engagement operation between the arms 46, 47 and the lowering regulating members 54, 55 is formed at one end side of the guide groove 43. , the amount of movement of the operating lever 40 can be reduced compared to the conventional one, the guide groove 43 and the long groove 43a can be formed more compactly than the conventional one, and the supporting structure of the operating lever 40 can be made smaller and the manufacturing cost can be reduced compared to the conventional one. This has practical effects such as being able to easily reduce the amount of noise, and also easily improving the switching operability and functionality of the markers 29 and 30.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of the riding rice transplanter according to the present invention, Fig. 2 is a plan view of the same, Fig. 3 is an explanatory diagram of the operation of the striation marker, Fig. 4 is a plan explanatory diagram of the main parts, and Fig. 5 is an explanatory view of the same side. 29, 30... Line drawing marker, 40... Operation lever, 43... Guide groove, 43a... Long groove, 46,
47... Arm, 54, 55... Latch (downward regulating member).

Claims (1)

[Scope of utility model registration request] A single operating lever 40 is provided for lowering the left and right markers 29, 30, and the operating lever 4
In the device provided with the guide groove 43 for guiding the movement of the left and right markers 29, 30, the arms 46, 47 are linked to the left and right markers 29, 30, and the lowering regulating member engages the arms 46, 47 to support the markers 29, 30 upwardly. 54, 55, and left and right long grooves 43a for moving the operating lever 40 to release the engagement operation between the arms 46, 47 and the lowering regulating members 54, 55.
A steering device for a rice transplanter, characterized in that: is formed on one end side of the guide groove 43.