JPS635116Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an alarm device for an agricultural machine such as a combine harvester.

Conventionally, agricultural machinery such as combines and tractors, especially agricultural machinery operated by a person on board, have been checked for lubricating oil pressure in the engine and malfunctions in the machinery, such as the height of the reaping section. Inspections of the position, rotation of the threshing machine barrel, etc. were carried out by lighting up an alarm indicator lamp installed on the operation panel in the driver's seat to indicate any abnormalities.

However, if the indicator lamp in such a warning device is burnt out, it will not be possible to indicate any abnormality in the area to be inspected. Therefore, each time the agricultural machine starts operating, for example, when starting the engine, the check switch must be pressed to check all It is necessary to check whether the indicator lamp can be lit normally.

In the present invention, each time the engine starting device of an agricultural machine is operated in the starting direction, the circuits to the indicator lamps of each alarm device are simultaneously energized for a certain period of time from the start of the operation, so that the engine starting device can be easily operated at the same time as the engine starting operation. This allows each lamp to be inspected for abnormalities in advance.

Next, an embodiment of the present invention will be described. In the figure, 1 is a battery, 2 is an engine key switch part,
B is a contact point with the positive electrode of battery 1, IG is a contact point to the engine ignition system, and ST is a contact point to the cell starter.

A1, A2, and A3 are alarm switches for various operating parts that are directly connected in parallel to the positive electrode side of the battery 1 without going through the switch part 2, and each switch A
1, A2, A3 to the corresponding display lamp L
1, L2, and a diode D in the forward direction toward L3.
Connect D and D respectively, and connect each lamp L1, L2,
One end of L3 is grounded to the battery negative electrode side.

T is a timer (delay element), and TS is a timer contact (b contact) that interrupts the circuit when the timer T is activated and a certain period of time has elapsed. Further, R is an electromagnetic coil of the relay, and RS is a relay contact (a contact) that turns on the circuit by excitation of the electromagnetic coil R.

Then, connect the cell starter contact ST of the engine key switch section 2 to the ground, the timer contact TS, and then the relay coil section R in series, and connect the battery positive electrode contact B to the ground through the relay contact RS.
Then, the timer T is connected in series, and each of the indicator lamps L1,
Connect the circuit 3 connected in parallel to L2 and L3 to the + side of the timer contact TS, and connect the parallel circuit 3 to the + side of the timer contact TS.
diodes D', D', D' are connected in the forward direction toward each of the indicator lamps L1, L2, L3.

With this configuration, when the engine key (not shown) is inserted into the engine key switch part 2 and turned clockwise in the figure, the battery contact B is connected to the ignition system contact IG and the cell starter contact ST. The engine is then started by rotating a starter motor (not shown). At the same time, the electromagnetic coil R of the relay is excited from the contact ST connected to this cell starter contact ST, and the relay contact RS is activated.
ON, and from this time timer T starts operating.

After starting the engine, connect the key to the ignition system contact IG.
Automatically or manually return to cell starter contact ST
However, since the relay contact RS is ON, the display lamps L1, L2, L3 are connected from battery 1 through circuit 3 and through each diode D'.
can be energized all at once. Therefore, regardless of whether the corresponding alarm switches A1, A2, and A3 are ON or OFF, it is possible to check whether the indicator lamp is out at the same time as the engine is started.

Furthermore, if the contact TS in the timer is turned OFF after a certain period of time, the relay electromagnetic coil R will no longer be energized, the contact RS will be turned OFF, power to the circuit 3 will be cut off, and each indicator lamp L1, L will be turned off.
2, L3 will disappear all at once. At this time, each alarm switch is connected to battery 1 regardless of timer T, so if the alarm switch is turned on at an abnormal location, only the indicator lamp at that location will continue to light even if the other indicator lamps go out. Become.

In summary, according to the present invention, the engine starting device and the indicator lamps in various alarm devices can
The display is connected via a timer, and the timer is activated for a certain period of time at the same time as the starting operation of the starting device, and the indicator lamps are energized all at once for only that certain period of time, so that the display is linked to the operation of the starting device. The lamp itself can be inspected, eliminating the need for a separate check operation. Furthermore, since the inspection can be performed by lighting the indicator lamps all at once for a certain period of time, the confirmation can be carried out very easily in a short period of time.

Inspection becomes even easier if a plurality of indicator lamps are arranged in one place.

Furthermore, alarm switches A1 and A are activated from battery 1.
2. The circuit 4 to A3 may be routed through the ignition system contact IG so that the abnormality alarm switch is activated only when the engine is running.

In addition, as shown in Fig. 2, indicator lamps L1', L2', L are connected to the parallel alarm switches A1', A2', A3' through forward diodes _D1 , respectively.
3' and relays R ₁ , R ₂ , R ₃ are connected, and the contacts RS ₁ , RS 2 , RS 3 of each of the relays are connected from the negative pole side of each switch A1', A2 _' , _A3' (all are connected to the a contact). ), timer contact TS' (b contact) and relay R ₄ are connected toward the ground side, while relay contact RS ₄ and timer T' which close (a contact) when relay R ₄ is operated. is provided in parallel with the alarm switch, and from the negative terminal side of this relay contact RS ₄ to the positive terminal side of each indicator lamp L1', L2', L3',
The forward direction diodes D ₂ , D ₂ ,
_D2 , all indicator lamps L1', L2', L3' are connected in response to activation of any one of alarm switches A1', A2', A3'.
lights up all at once for a certain period of time set by timer T′,
After that, only the indicator lamp corresponding to the activated alarm switch may continue to be lit.
In this way, the alarm display section becomes brighter to draw attention, and the area to which the alarm should be issued can then be displayed.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a wiring diagram of an alarm device linked to an engine starting device, and FIG. 2 is a wiring diagram of another embodiment. 1...Battery, 2...Engine key switch section, R...Relay, RS...Relay contact, T...
Timer, TS...Timer contact, A1, A2,
A3... Alarm switch, L1, L2, L3... Display lamp.

Claims (1)

[Scope of utility model registration request] The plurality of indicator lamps in the alarm device of the agricultural working machine are configured such that each lamp is illuminated in response to the activation of the corresponding alarm switch, while the starting device of the engine of the agricultural working machine and each of the indicator lamps are configured to An alarm device for an agricultural working machine, which is connected via a timer, and configured to operate the timer for a certain period of time simultaneously with the starting operation of the starter device, and to energize all the indicator lamps at once for a certain period of time.