The snail speaker is 12V, one of them is 30-50W.
When 12V current passes through the horn switch pressed, the coils at 86 and 85 are drawn together, and at the same time, the 87 at 30 and 87 are turned on (87 and 87a are equivalent to another switch), causing the processing. Current is supplied to the snail horn through this switch to achieve and realize the protection function of the horn switch.
Benefits of snail horn: It is mainly used to warn quickly approaching drivers. Its warning signal allows other drivers to estimate the distance and direction of the vehicle emitting the warning sound. The production and materials are of high quality, so they are resistant to weather, salt and the impact of gravel and stone fragments, making them suitable for all weather conditions.
Detailed information:
Snail horn principle:
Signal The mode of appearance is pulsed air pressure . The sound transmission is a more harmonious fan-shaped diffuse transmission. The sound waves of the snail horn are broadcast from the horn outlet to both sides. Therefore, the sound emitted by the snail horn is transmitted in a fan shape. the sound is harmonious.
(When the driver presses the button switch, the current passes through the coil through the contact, and the coil generates a magnetic force to attract the armature and force the steel sheet of the diaphragm to move. The armature moves to disconnect the contact. When the current is interrupted, the magnetic force disappears and the steel part of the diaphragm returns to its original position with the armature under the action. of its own elasticity and the spring part The contact is.closed and the circuit is turned. alight. Current flows through the contact through the coil to generate a magnetic force, and the above action is repeated
The diaphragm vibrates repeatedly to produce sound. The rigid connection between the soundboard and the diaphragm steel plate. can make the vibration soft and produce a more pleasant sound.)
In this case, failure to tighten the speaker mouth is considered a failure.
If the horn mouthpiece is missing bolts, it is an explosion failure; if the incoming wire is not tight, it is an explosion failure if there is no electrified mining equipment, if; the mouthpiece of the horn is not tight and the hand may shake, this is a failure of explosion; if the nut-type insertion device is not tight enough and the compression nut can be screwed more than half a turn in the tightening direction with one hand; , it is considered a failure.
If the electrical equipment does not explode, the flames from the explosion inside the equipment will spread outside the hull and come into direct contact with the gas mixture underground fuels and explosives, which will cause mine fires and gas or coal dust explosions, leading to serious consequences.