JPS609077Y2 - Emergency stop device for mobile agricultural machinery - Google Patents

Description

[Detailed description of the invention] Conventionally, mobile agricultural machinery that uses an operation wire to connect and disconnect the main clutch has to repeatedly connect and disconnect the main clutch.
The operating wire may become fatigued and break.

This situation occurs when you pull the operating wire to disengage the main clutch while driving on a steep slope or when loading or unloading onto a truck, or when you leave the main clutch disengaged (with the engine running on the road). If this occurs, it is extremely dangerous.

The present invention aims to provide an emergency stop device for a mobile agricultural machine, which has an extremely simple structure, but is capable of reliably stopping the engine and stopping the machine when the operating wire of the main clutch is cut. Main clutch lever 10
and the main clutch operating lever 12 and the main clutch wire 1.
In a mobile agricultural machine, the main clutch is connected to the main clutch wire 11 and the main clutch is connected to the main clutch by operating the main clutch operating lever 12, and an engine stop circuit or a fuel cock is connected to the engine. The inner wire of the clutch wire 18 is loosely stretched from the main clutch operation lever 12 to the vicinity of the engine emergency stop switch 13 inserted into the engine stop circuit or the engine emergency stop member such as the fuel cock, and the sub-clutch wire 18 main clutch levers - 10
between the main clutch lever 10 and the engine emergency stop member.
The base of the outer wire 18a is attached to the main clutch lever 10, and the tip of the outer wire 18a is bent to such an extent that it does not interfere with the operation of the clutch lever 10, and the tip of the outer wire 18a faces the engine emergency stop member so as to be able to approach and separate from it.

The embodiment shown in the drawings will be described below. Reference numeral 1 denotes an engine mounted on a frame 3 protruding forward from a mission case 2.
A rotary tiller 4 and a handle 5 are protruded from the rear of the machine, and a belt 8 is stretched between an input pulley 6 provided at the top of the transmission case 2 and an output leaf of the engine 1.

A main clutch consisting of a multi-disc clutch is built into the input pulley 6, and a main clutch lever 10 of a cam 9 that connects and disconnects the main clutch is connected to a main clutch wire 11.
It is connected to a main clutch operating lever 12 provided on the handle 5 through a.

Reference numeral 13 denotes an engine emergency stop switch which is fixed to the frame 3 and constitutes an engine emergency stop member, and one electric wire 14a is connected to an engine stop circuit between the engine stop switch 15 provided on the handle 5 and the engine. The other electric wire 14b is grounded, and its contact piece 13a faces into a long hole 16a formed in a guide pipe 16 attached to the frame 3.

A fixing plate 1 provided at the front part of the guide pipe 16
7 and the operating lever 12, a sub-clutch wire 18 is provided so as to be parallel to the main clutch wire 11, and the base of the outer wire 18a of this sub-clutch wire 18 is fixed to the main clutch lever 10. However, the distal end faces the rear end of the guide pipe 16 while being loosely fitted into the hole of the support plate 19.

Furthermore, when the main clutch is engaged, the main clutch operating lever 12 of the sub-clutch wire 18 is approximately equal in length to the main clutch wire 11 or slightly longer than the main clutch lever 10. 10
As shown in FIG. 3a, the more forward portion is made long and flexible to the extent that it does not interfere with the operation of the main clutch lever 10.

In the drawings, 20 is a bullet that biases the main clutch lever 10 toward the entry side, and 21 is a wheel.

In the above-mentioned device, when the main clutch operating lever 12 is tilted forward to the engaged position B, the main clutch wire 1
1 is loosened, the main clutch lever 10 is rotated forward, the main clutch is engaged, and at the same time, the sub-clutch wire 18 is also loosened.

Since the inner and outer parts of the sub-clutch wire 18 do not move relative to each other, the main clutch lever 1 is moved as shown in Fig. 3a.
The front end of the outer wire 18a only bends greatly in front of the outer wire 18a, and the front end of the outer wire 18a hardly moves back and forth.

Also, pull the main clutch operating lever 12 rearward to
As shown in the figure, when the clutch wire 11 and the sub clutch wire 18 are locked in the engaged position, the main clutch wire 11 and the sub clutch wire 18 are simultaneously pulled rearward, but the base of the outer wire 18a is pulled together with the main clutch lever 10 by the same amount as when the inner wire is pulled. Since the outer wire 18a is moved under tension, the flexible portion of the sub-clutch wire 18 simply extends by that amount, and the tip end of the outer wire 18a does not substantially move.

When the main clutch operating lever 12 is locked at the A position or tilted to the engaged position, if the main clutch wire 11 breaks, for example at the M position, as shown in Figure 3, the inner wire of the sub clutch wire 18 While the outer wire 18a is under tension, the base of the outer wire 18a is pushed forward by the main clutch lever 10, so its front end moves forward and enters the guide pipe 16, pushing up the contact piece 13a. , emergency stop switch 13 is O
N, and even if the engine stop switch 15 is in the OFF state, it is grounded, the engine 1 stops immediately, and the aircraft also stops.

In addition, when the engine is a diesel engine, the fuel cock is also used as an engine emergency stop member, and the tip of the outer wire 18a of the sub-clutch wire 18 in the above example is made to face the fuel valve, so that the tip of the outer wire 18a is directed forward. The fuel valve is configured to close when the vehicle is moved to.

Since the present invention is constructed as described above, the strength of the sub-clutch wire 18 does not decrease even if the main clutch operating lever is repeatedly operated.

Therefore, even if the main clutch wire 11 breaks with the main clutch operating lever 12 in the engaged position, the sub-clutch wire 18 will not break, and if the main clutch wire 11 breaks, the outer wire 18a of the sub-clutch wire 18 will be pushed out. The engine emergency stop switch 13 can be activated immediately to stop the engine 1, and the aircraft can be stopped instantly. It is safe because there is no need to pull both handbrake levers at the same time or press the engine stop button separately, which is difficult to do suddenly even if the clutch wire breaks.

Also, stop the aircraft with engine 1 running,
Even if the main clutch wire 11 breaks if left as is, the engine 1 can be stopped almost at the same time as the main clutch is engaged.

In addition, if the engine emergency stop switch 13 is configured to be notified by a lamp, buzzer, etc. that the engine emergency stop switch 13 has been activated,
It is possible to easily know that the cause of the engine 1 stopping is due to a breakage of the main clutch wire, and erroneous operation after the engine is stopped can be prevented.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the tiller, Fig. 2a is a side view showing only the main clutch operating section, b is a plan view of the same, and Fig. 3a is a side view of the tiller. is a side view of the main part,
Fig. 4b is a side view showing a state in which the main clutch wire is broken, Figs. 4a and 4b are partial sectional views of the main parts, and Fig. 4c is a perspective view of the same. 1...Engine, 10...Main clutch lever-111...Main clutch wire, 12...
...Main clutch operation lever, 13...Emergency stop switch, 18...Sub clutch wire, 18a...Outer wire.

Claims (1)

[Scope of utility model registration request] The main clutch lever 10 and the main clutch operating lever 12 are connected to the main clutch wire 11, and the main clutch is connected to the main clutch by operating the main clutch operating lever 12, and an engine stop circuit or fuel cock is connected to the engine. In the mobile agricultural machine, the inner wire of the sub-clutch wire 18 installed in parallel with the main clutch wire 11 is connected to the engine emergency stop switch 1 inserted from the main clutch operation lever 12 into the engine stop circuit.
3 or loosely stretched over the vicinity of the engine emergency stop member such as the fuel cock, and the sub-clutch wire 18 is stretched between the main clutch lever 10 and the engine emergency stop member to an extent that does not interfere with the operation of the main clutch lever 10. This emergency stop device for a mobile agricultural machine is characterized in that the outer wire 18a is bent, and the base part of the outer wire 18a is attached to the main clutch lever 10, and the tip part faces an engine emergency stop member so as to be able to come into contact with and separate from the engine emergency stop member.