JPS6287007A - Line drawing marker operation structure of paddy field work equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a delineation marker operation structure for a paddy field working machine that automatically moves left and right delineation markers in and out alternately by vertical movement of a working device connected to a traveling machine body.

[Conventional technology]

According to the drawing marker operation structure with the above configuration, it is more convenient than the one in which the marker is moved in and out manually. According to , one of the markers was lowered when the work equipment was lowered, so when the aircraft was turning at the edge of a ridge, the seedling planting device was lowered and the mud surface at the edge of the ridge was leveled with a float. The marker hits the ridge during a sliding turn, that is, when a headland is planted after a round-trip assessment, the marker hits the ridge during a sliding turn, which is performed in advance to level the headland when the aircraft turns. It's inconvenient.

Therefore, as a means to overcome the drawbacks of the automatic marker, there is a technique disclosed in Japanese Patent Laid-Open No. 88703/1983.

With this structure, when the marker is not needed, such as when planting along the ridge, the main switch of the electric locking device that locks the left and right markers alternately can be turned off and either the left or right marker can be lowered. It is completely structured.

[Problem that the invention seeks to solve]

However, with a structure like this that makes it impossible to enter or exit either the left or right marker using a separate operating device,
During the reciprocating planting process, when starting planting work after turning the aircraft at the edge of a ridge, in addition to operating the handle and engaging the planting clutch, lowering the marker is required, making the turning operation cumbersome and causing the aircraft to Since turning is done frequently, there was room for improvement in terms of operation.

The present invention aims to improve the operability by devising the operation structure of the marker.

[Means for solving problems]

The characteristic structure of the present invention for achieving the above object is that the marker selection switching device is linked to the vertical movement of the working device, and
The final "out" of the marker is linked to the engagement operation of the planting clutch.

[For production]

When the seedling planting device is raised when the aircraft turns at the edge of a ridge, the markers in the lowered state are switched to the raised and retracted position, and as the seedling planting device is raised, the marker selection switching device is switched. Then, during a sliding turn in which the seedling planting device is lowered midway through the turn and the headland is leveled with the float while turning, the marker on the side switched by the marker selection switching device will descend as the seedling planting device descends. However, since the final "out" of the marker is linked to the engagement of the planting clutch, during a sliding turn, both the left and right markers remain in the raised and retracted attitude, and the aircraft's When the planting clutch is engaged and operated to start seedling planting work after turning, the marker on the side switched by the marker selection switching device lowers.

〔Effect of the invention〕

Therefore, when performing a sliding turn at the edge of a ridge, there is no need to stop or stop the operation of the marker selection switching device, or to lower the marker when starting planting work after the aircraft has turned. Improves operability.

〔Example〕

As shown in FIG. 11, a boarding and driving section (2) is formed in the center of the traveling body (1), and at the rear end of the body (1),
A link mechanism (
4) is connected to a seedling planting device (5) as an example of a working device to constitute a riding rice transplanter.

In each float (6) of the seedling planting device (5),
As shown in Fig. 1, a spring (7) elastically biases one float (6A) located in the center of the aircraft downward.
is provided to act on the bending/extension link (8), so that one float (6A) is configured to double as a ground sensor for lifting/lowering control, and a control valve (9) for the hydraulic cylinder (3) is provided.
) The control valve operating arm (10), which swings forward and backward in accordance with the forward and reverse sliding of the spool (9A) in the spring (11
) is biased toward the rising body. and,
A wire (12) connects the bending/extending link (8) to the float (6A) biased downward and the operating arm (10).
to automatically control the seedling planting device (5) in order to maintain the swinging position of the float (6A) relative to the seedling planting device, that is, the seedling planting depth within a set range. It consists of a lifting control mechanism for lifting and lowering operations.

A cylindrical body (14) in which an operating piece (13) for locking the spool (9A) only in the raised state side is fitted onto the supporting shaft (IOA) of the control valve operating arm (10) so as to be relatively rotatable.
), as well as a back-and-forth swing type lift operation lever (1
5) is pivoted to a lever support frame (154) connected from the cylindrical body (14) so as to be able to swing only laterally, thereby moving the lifting operation lever (15) to the raised position (U) and stopping the lifting. position(
N) and by switching to the lowered position (D),
The seedling planting device (5) is configured so that it can be manually raised and lowered, and the raising and lowering operation lever (15) is set to the automatic control position (A).
When the control valve (9) is operated as described above, the float (
6A) is configured to bring about a state in which the switching operation is automatically performed. Further, a spring ball (16) for locking and holding the lifting operation lever (15) at the lifting stop position Z (N) is provided so as to act on the locking operation piece (13).

An engaging type planting clutch (17) that intermittents power transmission to the seedling planting device (5) is connected to the transmission case (18) on the side of the aircraft.
), the rocking type clutch operation arm (19) is installed in a biased state, and the lifting operation lever (15) is placed between a lowered position (D) and an automatic control position (A) in front of the lowered position (D). When the front side is in the swing range than the midway position (M) between, the switch is switched to the on operation position (ON), and when it is in the rear side range from the midway position (M), the switch operation is switched to the cut operation position (OFF). C-shape the lever (15) so that the
, stroke absorption spring (2OA) and link mechanism (21
).

In the rice transplanting mechanism, line markers (22a) and (22b) are provided on both left and right sides of the seedling planting device (5) so as not to disturb the planting rows of seedlings during seedling planting work.
) is used.

In other words, during seedling planting work, one marker (22
) to form a groove in advance, and when planting the next seedlings, sometimes visually match the center marker (23) provided at the front end of the machine with this groove. By running the machine (1) in parallel with the already planted seedlings, seedlings can be planted with less disturbance.

In addition, in the 8-way rice transplanting mechanism, each time the machine (1) reaches the edge of the field during seedling planting work, the left and right line markers (22a
) and (22b) are configured to swing in and out alternately.

That is, each time the seedling planting device (5) is raised, one of the markers (22) is set to the raised storage position, and the other is set to the lowered usage position.

As shown in FIGS. 1 to 3, the link mechanism (4)
A top link (4a) consisting of two members placed close to each other, and a pair of left and right lower links (4b).

(4b) and a channel-shaped frame (2
4), and a shaft (25) projecting left and right from the bottom of the frame (24).

Also, at the lower end of this frame (24) is a pivot post (24A).
) is attached, and the seedling planting device (5) is attached to this boss (2).
The link mechanism (4A) can be freely rolled around the axis (P) of the
).

The delineated marker operation structure is the left and right markers (22a)
, (22b) are provided at the base of the marker (26a), (26b), left and right markers (2
2a).

A pair of left and right operating cables (27a), (27b) whose ends are connected to the base of the marker so as to raise the cable (22b)
), pulleys (28a) and (28b) that guide the operating cables (27a) and (27b) upward, and operating cables (2
A rod (2
9a), (29b), this rod (29a),
(29b) Locking members (30a) and (30
b) The operating pieces (31a) and (3
1b), compression springs (32a) and (32b) provided between the operating piece (31) and the locking member (30), and a bracket (3) provided on the back surface of the frame (24).
3), a lock fitting (35) supported via a swing shaft (34), and a spring (37) connected at one end to a switching arm (36) extending rearward and upward from the lock fitting (35). ), and the rod (29a), (2
An arm (41) supported on the frame (24) via a pivot shaft (40) so as to vertically swing the horizontal rod (39) inserted through the elongated holes (29h) and (29h) of 9b). ), and the pivot shaft (4
0), so that the top link (
4a) consists of an operating arm (42) provided on the lower surface.

The lock fitting (35) has operated parts (35a) and (35b) formed in the left and right directions from the upper part thereof, and locking parts (35A) in the left and right directions of the center part.
), (35B) are formed. Further, the lock fitting (35) is formed to have a large dimension on the side opposite to the extending direction of the switching arm (36), and has a size such that its back surface lightly slides into contact with the surface of the plastic socket L-(24). By arranging the lock fittings (35) at a distance of , the lock fitting (35) is prevented from being displaced toward the spring side by the spring (37).

Furthermore, at the tip of the switching arm (36) there is a knob for switching operation (
43) is the installation.

As shown in FIG. 4, the upper surface (31s) of the operation piece (31)
), and the lower ends of the operated parts (35a) and (35b) are formed to be inclined in such a direction that they are embedded into each other as the husband and wife get closer, and the lower surface (31t) of the operating piece (31) is When (31) descends, the operating piece (31) is formed to be inclined so that it can pass over the operated parts (35a) and (35b). Moreover, the locking member (30)
The lower surface (30t) and the locking part (358) + (35B
The upper ends of the locking parts (358) and (35B) are inclined in a direction in which they are embedded into each other as they approach each other, and the upper surfaces (35s) of the locking parts (358) and (35B) are formed to be inclined substantially parallel to the above-mentioned slope. .

As shown in FIG. 5, the cross-sectional shape of the rod (29) is formed into a substantially oval shape, and a through hole (31h) set to this cross-sectional shape is bored in the operating piece (31). The operation piece (31) is prevented from swinging around the axis of the rod (29).

When the trouble mechanism (38) raises the seedling planting device (5) in the stable position shown in FIG.
1) is swung from the position shown by (L) in FIG.
The trouble mechanism (38) is also switched by the pulling force (29b).

In other words, while the rods (29a) and (29b) are being pulled up, as shown in FIG.
a) is the upper surface (31s) of the left operated part (35a)
By coming into pressure contact with the lower surface of the operating piece (31a), the operating piece (31a) compresses the spring (32a) at the lower part of the operating piece (31a) to a tight state and stores elastic force while forcibly pushing up the operated part (35a). Become. Then, when the trouble mechanism (38) is operated slightly beyond the dead center (C) shown in Fig. 8 in the switching direction and the reaction force from the operated part (35a) to the operating piece (31a) disappears, As described above, the elastic force stored in the spring (32a) pushes the trouble mechanism (38) further in the switching direction, ensuring that the trouble mechanism (38) is switched, and the ninth
Set to the stable position shown in the figure.

Incidentally, the level of the arm (41) in the stable position shown in FIG. 9 is set to a slightly higher position than the level at the time the toggle mechanism (38) is switched, as described above.
Also, in this state, the left and right markers (22a), (2
2b) is set to the raised and retracted position.

After that, when the seedling planting device (5) is lowered, the left locking member (30a) is received by the locking part (35A) of the lock fitting (35) as the arm (41) is lowered. is,
Further, by lowering the seedling planting device (5), the right operating piece (31b) passes over the upper surface of the operated part (35b), and the arm (41) moves as shown in FIG.
When it descends to the position indicated by L), move the right rod (2
9b) is lowered by the flexible bone of its long hole (29h), the right marker (22b) is set to the lowered position, and at the same time the left marker (22a) is set to the raised and retracted position.

Furthermore, when the seedling planting device (5) is raised, the knob (
By manually operating 43), the marker (22) on the required side can be displayed at will.

Furthermore, the seedling planting mechanism lowers the seedling planting device when the aircraft turns at the edge of a ridge, and lowers the seedling planting device during a sliding turn in which the aircraft turns while leveling the muddy surface of the ridge with a float. A device is also provided to maintain the left and right markers in a retracted state.

As shown in FIG. 1, the U extending from the arm (41)
The hook (45) that engages with the U-shaped metal fitting (44), the release wire (46) that releases the engagement of the hook (45), and the lifting operation lever (15) and the planting clutch. (17) and is connected to the swing link (218) of the link mechanism (21).

The hook (45) is attached to the U-shaped fitting (44) as the link mechanism (4) that raises and lowers the seedling planting device (5) rises.
is automatically engaged when the hook (45) rotates downward, and the upper surface of the hook (45) is connected to the U-shaped fitting (
44) is formed on an inclined surface (455) that guides.

The hook (45) is unlocked by pressing the lever (15).
) to the engaged position (A) of the planting clutch (17), the swinging link (21A) is moved by the swinging of the latch operating arm (19) as the planting clutch (17) is engaged.
is operated to swing, and the inner wire (46B) of the release wire (46) is pulled to release the lock.

[Another example]

In the above embodiment, in order to unlock the hook (45), the lever (15), which also serves as the lever for raising and lowering the seedling planting device (5) and the clutch lever of the seedling planting device (5), is used.
), the lock is released when the planting clutch is engaged, but in applying the present invention, the lever for raising and lowering the seedling planting device and the clutch lever for transmitting the seedling planting device may be separated separately. In the structure provided with the seedling planting W
When the W clutch lever is engaged, the hook (45
) may be configured to release the lock.

[Brief explanation of drawings]

The drawings show an embodiment of the line drawing marker operating structure for a paddy field work machine according to the present invention, FIG. 1 is a schematic diagram showing the interlocking relationship between the hook and the operating lever, FIG. 2 is a rear view of the marker operating structure, and FIG. The figure shows the linkage between the marker operation structure and the marker, Figure 4 is a partially cutaway side view showing the locking piece, operation member, rod, etc., and Figure 5 is a cross-sectional view of Figure 4. FIGS. 6 to 10 are diagrams sequentially showing the operation of the lock fittings and the like when switching markers, and FIG. 11 is an overall side view of the rice transplanter. (1)...... Traveling machine, (5)... Working device, (17)... Planting clutch, (22a)
, (22b)... Line marker, (38
)・Old... Marker selection switching device.

Claims (1)

[Claims] In a line drawing marker operation structure for a paddy field working machine in which left and right line drawing markers (22a), (22b) are automatically moved in and out alternately by vertical movement of a working device (5) connected to a traveling machine (1), a marker selection switching device ( 38) to the working device (
The marker (22) is linked to the vertical movement of the marker (22).
a), the final “out” of (22b) is connected to the planting clutch (17).
) The line marker operation structure of a paddy field work machine is linked to the input operation.