JPH0466009A - Riding-type transplantation machine - Google Patents

Abstract

PURPOSE:To enable the change of moving direction independent of time by improving a structure to keep the released state of a lock of a streaking marker. CONSTITUTION:The riding-type transplantation machine is provided with a changeover mechanism B to switch streaking markers 5, 5 from a state forced to a lodging posture to an erection posture when a transplantation apparatus 6 connected to a mobile machine body in a freely liftable state is lifted from a lowered transplantation position by more than a prescribed level; locking mechanisms C, C automatically engaging with the streaking markers 5, 5 switched to the erected housing postures and keeping the markers to the housing state; and lock-releasing mechanisms D, D (e.g. knuckle arm 15) to release the locked state of the locking mechanisms C, C positioned opposite to the turning direction interlocked with the turning motion of a steering wheel. The above machine is further provided with the following parts. A lock-release keeping mechanism E (e.g. rod holder 16) to keep the lock-releasing mechanism D in released state independent of the steering operation; and a keep-releasing mechanism F (e.g. ring 18) to release the lock-release keeping mechanism E according to the lowering of the transplantation apparatus 6.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is characterized in that, for the next planting, a pair of left and right line marking markers for marking travel index lines on the mud surface can be freely switched between a lodging posture and an upright storage posture. In addition, the planting device, which is installed in a state where it is biased in a lodging action posture and is connected to the traveling body so as to be able to move up and down by driving, moves the line marking marker in conjunction with the rising above a certain level from the lowered position. A switching mechanism is provided for switching to the upright and retracted position against the bias, and a locking mechanism is provided that automatically engages the line marker that has been switched to the upright and retracted position to maintain the line marker in the upright and retracted position. , Furthermore, the locking mechanism is linked to the turning movement of the steering wheel,
The present invention relates to a riding rice transplanter that is provided with a lock release mechanism that unlocks the lock mechanism located on the opposite side of the rotation direction among the lock mechanisms.

[Conventional technology]

In the above-mentioned riding rice transplanter, the locking mechanism that maintains the marker in the retracted state is released in conjunction with the turning operation of the steering handle. When performing a reverse operation, there is the inconvenience of having to drag the marker in the lodging position to change direction.

Therefore, conventionally, as shown in Japanese Utility Model Application Publication No. 58-68812, a means has been proposed to provide a mechanism that holds the locking state for a certain period of time after the locking mechanism is released in conjunction with a single movement of the steering wheel. Ta.

[Problem to be solved by the invention]

According to the conventional structure, the direction change must be completed by turning the handle back within a certain period of time, and if the direction change is delayed, the marker will switch to the lodging posture. On the other hand, if the change of direction is performed smoothly, there is the inconvenience of having to wait until the marker is switched to the lodging posture.

An object of the present invention is to make it possible to change direction without being influenced by time by devising a structure that maintains the unlocked state.

[Means to solve the problem]

The characteristic configuration of the present invention for achieving the above object is to provide an unlocking maintenance mechanism that maintains an unlocking mechanism that unlocks the locking mechanism in an unlocked state in conjunction with the turning operation of the steering handle, and further, The present invention is provided with a maintenance/release mechanism that releases the lock/release/maintenance mechanism as the planting device descends, and its functions and effects are as follows.

[For production]

The operation will be explained using FIGS. 1 and 6 as examples.

When the planting device is raised when changing direction at the edge of a ridge, the relative displacement between the pulley (8) at the rear end of the top link (4a) and the pulley (7a) of the vertical link (7) causes the marker (5) to The wire (9) is pulled to switch the marker to the retracted position. Then, as shown in Figure 2, the wire (9
) The locking pin (13) of the locking mechanism (C) engages with the annular groove (11) formed in the intermediate rod (9A) to maintain the marker in the stored state. And, as shown in Figure 3,
When the steering wheel is turned beyond a certain level to turn the aircraft, the lock pin (C) of the locking mechanism (C) on the opposite side of the turning direction
13) is unlocked via a linking wire (14) to a knuckle arm (15) as a lock release mechanism (D).

In such a case, the storage case (IS
B) engages with the stopper (17) of the rod holder (16) as a lock release/maintaining mechanism by receiving a component force in a direction perpendicular to the pulling direction of the wire (14),
``The unlocked state will be maintained.

In such a case, if the planting device (6) is lowered,
The unlocked marker (5) switches to the lodging posture, but if the planting device (6) is kept raised and the handle is turned back to align the rows, the unlocked marker (5) switches to the lodging posture. It never switches.

Even if the handle is turned back to align the rows, as shown in Figure 4, when the planting device (6) is lowered, the rod (9A) is pulled as the marker falls down.
The lock pin storage case (13B) is slid by the ring (18) as a maintenance release mechanism attached to A), and the lock pin storage case (13B) is released from the rod holder (16), and the lock mechanism (C) is reset. .

〔Effect of the invention〕

As a result of the above configuration, the direction can be changed without being affected by time, and if the direction can be changed smoothly, the marker can be quickly switched to the lodging posture by lowering the planting device. , the planting work can be done quickly.

[Example 5] Embodiments of the present invention will be described below with reference to the drawings.

As shown in Fig. 6, a steering wheel (1), a driver's seat (2), and a link mechanism (4) that can be raised and lowered by a hydraulic cylinder (3) are installed at the rear of the passenger vehicle (A). Planting is done using a planting device (6) equipped with a pair of left and right line markers (5) that mark travel indicator lines on the mud surface.
) are connected in a rolling manner.

The riding rice transplanter is equipped with a planting device (6
) is planted by a switching mechanism (B) that switches the line-drawing marker (5) from the lodging posture to the upright storage posture in conjunction with the rise above a certain level from the lowered position, and the marker (5) switched to the upright storage posture. 5), a locking mechanism (C) that holds the device in an upright and retracted position, a locking mechanism (D) that unlocks the locking mechanism on the side opposite to the turning direction in conjunction with the turning operation of the steering wheel, and the unlocked state thereof. Lock release maintenance mechanism (E) that maintains the lock regardless of steering operation
), and a maintenance release mechanism (F) that releases the lock release maintenance mechanism (E) as the planting device descends.

The switching mechanism (B) for switching the line drawing marker from the lodging action posture to the upright storage posture includes a pulley (8) attached to the rear end of the trub link (4a) of the link mechanism (4), and a marker (5), (5) consists of a wire (9) connecting the two, and as the link mechanism (4) rises, the pulley (8) at the rear end of the top link (4a) and the pulley (7a) of the vertical link (7) move relative to each other. Due to the displacement, the wire (9) connecting the markers is pulled, and the marker (5), which is biased in the lodging posture by the spring (10), is switched to the upright storage posture.

The locking mechanism (C) has an annular groove (as a secured part) formed in the rod (9A) provided in the middle of the wire (9).
11) and a locking pin (13) biased by a spring (12) as a retaining member that protrudes into the annular groove (11). When the marker (5) is switched to the upright and retracted position, the rod ( The lock pin (13) enters into the annular groove (11) formed in 9A), and the marker (5) is held in the upright and retracted position.

a lock release mechanism (D) that releases the lock mechanism (C);
consists of a lock pin (13), a linking wire (14), and a knuckle arm (15) of the steering mechanism,
When the steering handle is rotated beyond a certain level, the knuckle arm (15) pulls a linking wire (14) to release the lock pin (13). (See Figure 3) The lock release maintaining mechanism (E) includes a cylindrical member (13A) as an engaging member integral with the lock pin (13), and an engaged member attached to the rod holder (16). Consists of a stopper (17) as a member,
When the lock pin (13) is pulled by the wire (14), with respect to the pulling direction of the wire (14),
The storage case (13B) of the lock pin (13) is slid by the horizontal component force, and the lock pin (13)
The cylindrical member '(13A)' is the rod holder (16)
The unlocked state is maintained by engaging with the stopper (17).

The maintenance release mechanism (F) that releases the lock release maintenance mechanism (E) is composed of a ring (18) attached to the rod (9A), and when the planting device (6) is lowered, the marker (5)
The rod (9A) is pulled as the rod (9A) falls down, and the rod (9A) is pulled.
Slide the storage case (13B) of the lock pin (13) with the ring (18) attached to the rod holder (16) to release the engagement with the stopper (17) of the rod holder (16) and open the lock mechanism (C). Reset to enable engagement. (See Figure 4) In addition, the rice transplanter has a problem in that when planting seedlings, when the planting device is raised and lowered in the middle of the work, the steering wheel must be operated.
In order to prevent the marker from switching to the lodging position, the lock can be released by operating a manual lever (19).

In the above embodiment, the linkage structure between the knuckle arm and the lock mechanism on one side has been described, but the knuckle arm and the lock mechanism on the other side are also connected in the same way.

[Another example]

To release the lock mechanism (C), use the limit switch (20) with the knuckle arm (15) as shown in Figure 7.
) to lock the lock pin (
The lock may be released by suctioning the cylindrical member (13A) of 13), and the solenoid (21) may be operated manually by a switch that comes into contact with a manual lever.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the riding rice transplanter according to the present invention, in which Fig. 1 is a diagram of the operation linkage of the marker, Figs. 6 is an overall side view showing the riding rice transplanter, and FIG. 7 is a schematic diagram showing another embodiment. (5)・・・・・・Drawing marker, (6)・・・・・・
Planting device, (A)... Traveling machine, (B) Old...
・Switching mechanism, (C)...Lock mechanism, (D)・
...Lock release mechanism, (E) town. Lock release maintenance mechanism, (F)... group maintenance release mechanism.

Claims (1)

[Claims] A pair of left and right line marking markers (5), (5) for marking the next planting run index line on the mud surface can be freely switched between a lodging posture and an upright storage posture, and are biased to the lodging posture. At the same time, when the planting device (6), which is connected to the traveling machine body (A) so as to be able to move up and down by a drive, rises above a certain level from the planting lowered position, the line marking markers (5), (5) are attached. A switching mechanism (B) is provided for switching to the upright and retracted posture against the force, and automatically engages the line markers (5) and (5) that have been switched to the upright and retracted position to switch them to the upright and retracted position. A locking mechanism (C), (C) is provided to maintain the posture, and the locking mechanism (C), (C) is linked to the turning operation of the steering wheel, so that the locking mechanism (C),
Of (C), the lock mechanism (C) located on the opposite side to the turning direction, the lock release mechanism (D) that releases the lock of (C)
), (D) is provided with an unlocking maintenance mechanism (E) that maintains the unlocking mechanism (D) in an unlocked state regardless of steering operation, and further comprising: (E) Planting device (
6) A riding rice transplanter equipped with a maintenance/release mechanism (F) that is released when descending.