JPH0455458Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a locking device for a sensing float in a rice paddy working machine such as a walk-behind rice transplanter, fertilizer, seeding machine, etc.

[Problems to be solved by the prior art and the invention] In general, in this type of paddy field work machine, the left and right rocking (rolling) of the machine body is controlled by sensing floats (sub-floats) arranged on both the left and right sides of the main float. It is designed to be detected by vibration.
By the way, when such a paddy field work machine rotates, for example, the operating handle is raised and the front of the main float is in contact with the rice field surface. In some cases, the sensing float may activate and cause the aircraft to tilt unexpectedly, resulting in an unstable operational situation, and in some cases, the sensing float may sink into the rice field. As a result, the sensing float and the parts connected to it may be damaged, and furthermore, the sensing float may droop and hit the loading platform during loading/unloading or transporting the aircraft, causing damage. There is.

[Means for solving the problem] In view of the above-mentioned circumstances, the present invention has been devised for the purpose of providing a locking device for a sensing float in a paddy field working machine that can eliminate these drawbacks. , a paddy field work machine configured to detect the left and right rolling of the machine body by means of sensing floats arranged on the left and right sides of a main float, comprising means for connecting the sensing floats to a planting clutch operating means for switching the planting clutch on and off. When the planting clutch operation means is disconnected, the sensing float is displaced to a retracted position higher than the bottom surface of the main float and is held locked there.

With this configuration, the present invention locks the sensing float in a retracted position higher than the bottom of the main float when the planting clutch is disengaged or lowered, such as when the aircraft is rotating. This is what I did.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawing, reference numeral 1 denotes a traveling body of a walking rice transplanter, and the traveling body 1 has an engine 2 at the front.
It is equipped with a seedling stand 3, a driving handle 4,
The arrangement of the planted nails 5 and the like are all the same as before.

Reference numeral 6 denotes a main float (center float), and the rear part of the main float 6 is pivotally supported to the fuselage by a support shaft 6a, and the front part is attached to a link mechanism (not shown) so as to be able to swing vertically. but,
Sensing floats 7 are disposed on both left and right sides of the front portion of the main float 6. This sensing float 7
In this case, the mounting seat 7b integrally provided in the front part is attached to the support shaft 7.
The lower end of the sensing rod 9 is attached to the rear end of an arm 7b extending rearward from the front end of the arm 7b. connected.
The upper end of this sensing rod 9 is interlocked and connected to an operating arm 10a of a rolling control valve 10.
When the aircraft is tilted to the left or right and both sensing floats 7 swing contrary to each other, the operating arm 10a operates to switch the left and right horizontal control valves 10 and send pressure oil to the left and right horizontal control cylinders 11. By operating the balance mechanism and thereby controlling the vertical movement of the traveling wheels 12, the aircraft attitude is maintained in a substantially horizontal attitude state.

A bracket 13 is protruded from the frame member 8, and the operating wire 1 is connected to the bracket 13.
No. 4 outer receivers 14a are fixed. A locking pin 14b formed at the tip of the actuation wire 14 passing through the outer receiver 14a is loosely engaged and connected to a long hole 16a formed in the actuation plate 16 provided on the mounting seat 7b. Further, the proximal end of the actuating wire 14 is operatively connected to a planting clutch lever 15 (corresponding to the planting clutch operating means of the present invention) provided on the operating handle 4. When the planting clutch lever 15 is in the engaged position, the actuating wire 14 is loosened and the locking pin 14b is located at the middle position of the elongated hole 16a, allowing the sensing float 7 to swing up and down. However, when the planting clutch lever 15 is operated to the cut position (in the embodiment, the operating positions of the planting clutch lever 15 are "on", "off", and "fixed").
There is a ``manual lift'' position, and in the ``on'' and ``off'' positions, the planting clutch is switched on and off, but the rolling control is in the valve automatic switching state and remains in the automatic control state, but this clutch disengagement This is the case when the plant is further operated to the "fixed" and "manual raised" positions, which correspond to the cutting position of the planting clutch of the present invention. ), the actuation wire 14 is pulled, thereby causing the locking pin 1
4b abuts and locks the upper end of the elongated hole 16a, push up the mounting seat 7b upwards, and remove the sensing float 7.
is raised to an avoidance position located above the lower surface position of the main float 6 when it is in its highest position, and is locked and held in this position.

Further, a simple riding section 17 is provided at the rear of the traveling body 1 shown in the embodiment. In other words, this riding section 17 is constructed using a float-like riding board 18 that slides on the rice field, and the front end of the riding board 18 has a support rod 1 extending from the fuselage side.
9 is pivotally supported via a support shaft 19a to the rear end of a support rod 20, which is provided at the rear end of the drive handle 4 so as to be movable back and forth. . Moreover, a bullet 21 is interposed between the support rod 20 and the operating handle 4.
Due to the urging force of this ammunition 21, the riding board 18 assumes a non-riding position in which it moves upward about the support shaft 19a,
When the rider climbs onto the board 18 to carry out the planting work, the board 18 moves downward against the bomb 21 and assumes a riding position in which it slides on the rice field. Furthermore, the upper ends of the left and right support rods 21 are connected by a connecting rod 22, and this connecting rod 22 is provided with a locking arm 23 that can be freely engaged with and detached from the planting clutch lever 15. With this locking arm 23 locked to the planting clutch lever 15, when the operator gets off the riding board 18 from the riding position to the non-riding position, the locking arm 23 is swung and displaced. The planting clutch lever 15 can be automatically displaced to the cutting side.

In the embodiment of the present invention constructed as described above, the planting operation is carried out with the planting clutch lever 15 set in the engaged position, but in this state the sensing float 7 is in an unlocked and free state. Therefore, when the machine body swings from side to side due to unevenness of the tiller, the left and right sensing floats 7 perform contradictory up and down sensing movements, which causes the horizontal control valve 10 to switch and control the running wheels. 12 is reversely swung up and down so that the sunken side of the aircraft moves downward, and rolling control is performed so that the aircraft assumes a substantially horizontal attitude.

As described above, in the present invention, rolling control is performed based on the sensing by the sensing float 7, and the left and right attitude of the aircraft can be maintained in a substantially horizontal attitude. , the planting clutch lever 15 is operated to the cut position to disengage the planting clutch, but at this time the sensing float 7 is held locked in the retracted position. In other words, when the planting clutch lever 15 is set to the cutting position, the actuating wire 14 is pulled and the sensing float 7 is forcibly moved upward, so that it is positioned above the lower surface of the main float 6 and locked in this position. It turns out. As a result, even when the main float 6 is in the raised state with the main float 6 touching the ground, for example, when the main float 6 is rotating, the main float 6
This prevents the sensing float 7 from touching down on the rice field ahead of the main float 6, which prevents the aircraft from inadvertently tilting left and right and becoming unstable. In addition to effectively preventing the aircraft from tilting due to the effect of the sensor float 7 on the sensing float 7, it is also possible to effectively avoid the problem of the sensing float 7 sinking into the mud. System protection can be effectively measured. Furthermore, during transportation, the sensing float 7 is prevented from hanging down and hitting the loading platform and being damaged.

It should be noted that the present invention is of course not limited to the above-mentioned embodiment. For example, the left and right sensing floats may be integrally connected by a connecting rod, and either the left or right sensing float may be planted on the side of the clutch operating means. By linking the two sensing floats and locking one of the sensing floats in the retracted position, the sensing float on the other side may also be locked in the retracted position. In this case, the connection between the planting clutch operating means and the sensing float does not necessarily need to be performed at the sensing float attachment part as in the previous embodiment, but a connecting rod that connects the sensing floats to each other may be connected to the planting clutch operating means, It may be configured so that it can be locked by this.

[Operation and Effect] In summary, the present invention is constructed as described above, so that when the operating means is set to the cutting position to cut the planting clutch, the sensing float is linked to this and locked in the retracted position. It will be held at a position above the bottom of the main float. As a result, for example, when the aircraft is circling and the main float is in contact with the rice field, the sensing float will detect and swing ahead of the main float due to the aircraft's inclination, which will cause the aircraft to become unstable. This not only ensures that the float is not tilted to the ground, but also allows for excellent maneuverability. This will definitely prevent you from putting it away.

[Brief explanation of the drawing]

The drawings show an embodiment of the locking device for the sensing float in the rice paddy working machine according to the present invention, in which Fig. 1 is a side view of the walking rice transplanter, and Fig. 2 is a longitudinal cross-section of the main part of the float control section. 3 is a side view showing the changing state of the sensing float, FIG. 4 is a lever guide diagram of the planting clutch lever, and FIG.
The figure is a perspective view of the main parts of the simplified passenger section. In the figure, 1 is the traveling aircraft, 6 is the main float, and 7
14 is a sensing float, 14 is an actuation wire, and 15 is a planted clutch lever.

Claims (1)

[Scope of utility model registration request] In a paddy field work machine configured to detect the left and right rolling of the machine body by means of sensing floats arranged on the left and right sides of a main float, the sensing floats are connected to a planting clutch operating means for switching on and off the planting clutch through a linking means. A sensing float for a paddy field work machine, characterized in that the sensing float is connected to the planting clutch, and when the planting clutch operation means is turned off, the sensing float is displaced to a retracted position higher than the bottom of the main float and held there. locking device.