JPS6348417Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a main clutch lever locking device for connecting and disconnecting power transmission to a traveling device, a planting device, etc. in a riding rice transplanter or the like.

Generally, when planting seedlings using a riding rice transplanter, if there are no seedlings on the seedling stand,
Seedlings must be replenished onto the seedling stand from an auxiliary seedling stand. When replenishing the seedlings mentioned above,
Since the operation must be carried out after the riding rice transplanter has stopped running, the rider must depress the pedal of the main clutch lever to cut off power transmission by the belt transmission device, and then operate the main gear shift lever to the neutral position. It was necessary to cut the planting clutch lever. Then, when replenishing the seedlings is completed, depress the pedal of the main clutch lever again, operate the main gear shift lever to the drive position, connect the planting clutch lever, and then lever the main clutch lever. The operator released the pedal and resumed planting the seedlings while the riding rice transplanter started running. As described above, in the past, when replenishing seedlings, operations such as stopping the travel were complicated, and due to this, when starting the travel after replenishing the seedlings, it was easy to forget to operate the planting clutch lever and plant the seedlings. However, the rice transplanter has disadvantages such as the fact that the rice transplanter has to be operated without using the rice transplanter.

Therefore, in the present invention, an auto-stop lever is disposed adjacent to the main clutch lever that operates the main clutch, and when the pedal part of the main clutch lever is depressed, the main clutch lever is activated. A toggle spring is provided for selectively positioning the locking position and the non-locking position, and a flat pedal part is provided at the tip of the auto-stop lever, and the pedal part is a flat surface that can be depressed together with the pedal part of the main clutch lever. and when the auto-stop lever is in a position where it can be locked by the toggle spring, the depressed main clutch lever is locked in the depressed state by engaging with the auto-stop lever, and By further depressing the pedal portion of the main clutch lever in the locked state together with the pedal portion of the auto-stop lever, the auto-stop lever is moved back from the main clutch lever and the lock of the main clutch lever is released; The object of the present invention is to provide a locking device for a main clutch lever of a riding rice transplanter, etc., which eliminates the above-mentioned drawbacks by making it possible to maintain power transmission from the engine with a single operation. .

Hereinafter, the present invention will be specifically explained based on an embodiment shown in the drawings.

As shown in FIG. 1, the riding rice transplanter 1 has front wheels 2.
It has a traveling body 5 supported by rear wheels 3, and an engine section 6, an auxiliary seedling stand 7, and a driver's seat 9 are arranged in the traveling body 5. Also, driver's seat 9
is provided with a seat 10 and a handle 11, a planted clutch lever 12 is installed at the lower side of the seat 10, and a main gear shift lever 13 and a main clutch lever 15 are installed at the lower front of the seat 10, respectively. There is. Further, behind the traveling body 5, there is a planting device 19 consisting of a seedling stand 16, a planting section 17, etc.
is swingably supported via a link 20.

As shown in FIGS. 2 to 4, the main clutch lever 15 passes through a step 21 provided on the traveling body 5 and projects upward.
Its base end is fixed to a rotating member 25 which is rotatably attached to the shaft 22 and biased by a spring 23 in the direction in which the main clutch lever 15 protrudes, and a pedal portion 15a is fixedly attached to its tip. ing. Further, the rotating member 25 includes a rod member 26.
One end of the rod member 26 is fixed, and the other end of the rod member 26 is fixed to an intermediate portion of a tension arm 27.
The tension arm 27 is rotatably connected to a shaft 29, and a tension pulley 30 constituting a main clutch is provided at one end of the tension arm 27, and a tension pulley 30 constituting a main clutch is provided at the other end of the tension arm 27. Tension spring 32 in contact with
is installed. The belt member 31 is connected to an engine pulley 3 which is rotationally driven by an engine 33.
5 and the main shaft pulley 36,
The engine 3 is activated by pressing and releasing the tension pulley 30 based on the depressing and releasing operations of the pedal portion 15a of the main clutch lever 15.
3 is connected to and disconnected from the main shaft pulley 36. Furthermore, power is transmitted from the main shaft pulley 36 to the wheels 3 (and 2) that constitute the traveling device and the planting device 19.

Opposed to the main clutch lever 15, an auto-stop lever 3 is provided at the step 21.
7 is provided to be swingable around a shaft 39,
A pedal portion 37a is provided at one end, and a toggle spring 4 is provided between the other end and the step 21.
0 is tensioned and the auto stop lever 37
can selectively assume two predetermined positions with the axis 39 as a boundary. A notch 37b is formed in the middle of the auto-stop lever 37 on the side of the main clutch lever 15.
The notch portion 37b is arranged so as to be able to engage with a pin member 15c provided so as to protrude outward from the side of the pedal portion 15a of the main clutch lever 15.

Note that the reference numeral 41 in FIGS. 2 and 4 is a cover member, and the reference numeral 41 in FIGS.
In the drawing, reference numeral 15b indicates a raised projection provided on the outside of the pedal portion 15a of the main clutch lever 15 for regulating the position of the operating foot.

Since this embodiment has the above configuration,
When the riding rice transplanter 1 is driven on the road, the auto-stop lever 37 is held in a forwardly retracted position, as shown by solid lines in FIGS. 2 to 4. In this state, even if the main clutch lever 15 is depressed, the auto-stop lever 37 has no effect.
The main clutch lever 15 is never locked. When the riding rice transplanter 1 performs planting work, the auto-stop lever 37 is tilted backward and held in a position where it is biased backward by the toggle spring 40. Furthermore, during the planting work, the main clutch lever 15 is in a raised state,
In this state, the belt member 36 is under tension due to the pressing operation of the tension pulley 30, and the driving force of the engine 33 is transmitted from the pulley 35 to the main shaft pulley 36. In such a situation, if there are no seedlings left on the seedling stand 16 and it becomes necessary to transfer the seedlings placed as spares on the auxiliary seedling stand 7 to the seedling stand 16, the pedal part of the main clutch lever 15 When the rider depresses the pedal part 15a by the required amount, the pin member 15c is engaged with the notch part 37b of the auto-stop lever 37, and the main clutch lever 15 is held in the locked state even if the rider takes his or her foot off the pedal part 15a. At the same time, tension pulley 30
is moved to the side that loosens the belt member 31, so the power from the engine 33 is not transmitted to the main shaft pulley 36, and the rice transplanter 1 stops running with the main speed change lever 13 and the planting clutch lever 12 in the operated state. At the same time, the operation of the planting section 17 is also stopped. In addition, in the above operation, when the rider depresses the pedal portion 15a of the main clutch lever 15, the main clutch lever 15 is automatically switched if the operating foot does not extend beyond the rising portion 15b of the pedal portion 15a. This prevents the auto-stop lever 37 from being unexpectedly switched to a position where it cannot lock the main clutch lever 15 due to the foot touching the pedal part 37a of the auto-stop lever 37 before it is locked by the top lever 37. In this way, when the rice transplanter 1 is stopped and the transfer of the seedlings onto the seedling table 16 is completed, as shown in FIG. When the pedal portion 37a of the auto-stop lever 37 is depressed together with the pedal portion 15a, which protrudes slightly outward, the auto-stop lever 37 retreats forward against the spring 40, and the locked state of the main clutch lever 15 is released. . In this state, the main clutch lever 15 is still in the fully depressed position, so the power from the engine 33 is not transmitted to the main shaft pulley 36. Therefore, from this state, the pedal portion 15a is gradually depressed. As the power is released, the main shift lever 13 and the planting clutch lever 12 are in the operating position as described above, so
The rice transplanter 1 gradually starts running without suddenly starting, and at the same time, planting of seedlings is restarted.

As explained above, according to the present invention, the main clutch lever 15 can be selectively positioned between a lockable position and a non-lockable position when the pedal portion 15a of the main clutch lever 15 is depressed. An auto-stop lever 37 is disposed opposite to the auto-stop lever 37, and when the auto-stop lever 37 is in the lockable position, the depressed main clutch lever 15 engages with the auto-stop lever 37, so that the main clutch lever 15 is depressed. By further depressing the pedal portion 15a of the main clutch lever 15 which is in the locked state, the auto-stop lever 37 retreats from the main clutch lever 15 in response to the depressing operation, and the main clutch lever 15 Since the lock is released, the main clutch lever 15 can be locked only when necessary with a simple mechanism, and the riding rice transplanter 1 can be locked simply by locking the main clutch lever 15.
It is easy to stop the running of the plant and stop the operation of the planting part 17. Furthermore, since the locking action of the auto-stop lever 37 is released when the main clutch lever 15 is depressed, the main clutch lever 15 can be gradually stopped from that state. By releasing the pedal force applied to the pedal portion 15a, the riding rice transplanter 1 can be smoothly restarted by only operating the main clutch lever 15, and at the same time, the operation of the planting portion 17 can also be restarted. Therefore, the temporary stop operation during planting work, such as replenishing seedlings, is greatly simplified, the operation becomes easier, and it is possible to eliminate the occurrence of missing plants due to erroneous operations.

Furthermore, since the auto-stop lever 37 can be switched between the lock position and the unlock position by the toggle spring 40, when the lock is not required, such as when driving on the road, the auto-stop lever 37 can be positioned at the unlock position and the lever 37 can be moved to the unlock position. The main clutch lever 15 can be operated without being interfered with by
It can reliably prevent erroneous operation that would prevent the clutch from returning, and the automatic stop lever 3 can be used when necessary.
7 to the lock position, the main clutch lever 15 can be reliably locked. Also,
Since a flat pedal part 37a is formed at the tip of the auto-stop lever 37, which can be operated simultaneously with the pedal part 15a of the main clutch lever 15, the pedal part 37a of the auto-stop lever can be depressed together with the pedal part 15a of the clutch lever 15. The lock can be released by simply depressing the pedal, and the toggle spring 40 does not go beyond the fulcrum in this state, and the main clutch lever 15 returns to the auto-stop state. The lever 37 also returns to the locked position, and in the working state, it can be locked every time the pedal part 15a of the main clutch lever 15 is depressed, and when locking is not required, the pedal part 15a can be locked. The main clutch 30 can be connected by depressing the pedal portion 37a of the auto-stop lever 37 together with the pedal portion 15a.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a riding rice transplanter to which the present invention is applied, Fig. 2 is a side view showing the main clutch lever locking device of the present invention together with the belt transmission device of the rice transplanter, and Fig. 3 is its main components. FIG. 4 is a side view of FIG. 3, and FIG. 5 is an explanatory diagram of the operating state. 1... Riding rice transplanter, 3... Traveling device (rear wheel),
15... Main clutch lever, 15a... Pedal part, 15c... Pin member, 19... Planting device,
30...Main clutch, 33...Engine, 3
7... Auto stop lever, 37a... Pedal section, 37b... Notch section, 40... Toggle spring.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a riding rice transplanter etc. that transmits power from an engine to a traveling device, a planting device, etc. via a main clutch, an auto-stop mechanism is provided adjacent to a main clutch lever that operates the main clutch. A lever is provided, and when the pedal part of the main clutch lever is depressed on the auto stop lever,
A toggle spring is provided to selectively position the main clutch lever between a lockable position and a non-lockable position, and the autostop lever has a flat surface at its tip that can be depressed and operated together with the pedal portion of the main clutch lever. a pedal portion is formed, and when the autostop lever is in a position where it can be locked by the toggle spring, the depressed main clutch lever is locked in the depressed state by engaging with the autostop lever. and further depressing the pedal portion of the main clutch lever in the locked state together with the pedal portion of the auto-stop lever, the auto-stop lever is moved back from the main clutch lever and the lock of the main clutch lever is released. Main clutch lever locking device for riding rice transplanters, etc. (2) A claim for utility model registration in which the surface clutch lever is locked by engagement of a pin member 15c provided in the pedal portion of the main clutch lever with a notch provided in the auto-stop lever. A locking device for a main clutch lever in a riding rice transplanter, etc. as described in Scope 1.