SU830457A1

SU830457A1 - Acoustic warning device

Info

Publication number: SU830457A1
Application number: SU792795943A
Authority: SU
Inventors: Богдан Михайлович Стефанюк; Григорий Егорович Кашицын; Леонид Петрович Попков; Федор Филимонович Аксентьев
Original assignee: Восточный Научно-Исследователь-Ский Институт По Безопасностиработ B Горной Промышленности
Priority date: 1979-07-13
Filing date: 1979-07-13
Publication date: 1981-05-15

Description

Изобретение относится к устройствам предупредительной сигнализации и может быть применено, в частности, в горной промышленности.The invention relates to warning devices and can be applied, in particular, in the mining industry.

Известны устройства для звуковой предупредительной сигнализации, которые содержат сирену, генератор, подключенный к цепи управления через выпрямительный мост, управляющий тиристор, включенный в одну диагональ выпрямительного моста, другая диагональ которого подключена к сети постоянного тока через обмотку сирены, а выходная обмотка подключена одним концом через, резистор и диод к управляющему электроду тиристора, а другим непосредственно к катоду тиристора [1].Known devices for audible warning, which contain a siren, a generator connected to the control circuit through the rectifier bridge, a control thyristor included in one diagonal of the rectifier bridge, the other diagonal of which is connected to the DC network through the siren winding, and the output winding is connected at one end through , a resistor and a diode to the thyristor control electrode, and others directly to the thyristor cathode [1].

К недостаткам данных устройств для звуковой сигнализации относится их боль- ι шое потребление энергии, так как не регламентируется время звучания сирены.The disadvantages of these devices for audible alarms include their high energy consumption, since the siren's sound time is not regulated.

Наиболее близким по техническому решению к предлагаемому является устройство для звуковой предупредительной сигнализации для горных комбайнов, которое со- ²держит кнопку и сирену, соединенные последовательно, два пневмоэлектрических реле времени и источник питания переменного .2 тока, и промежуточное реле, контакты которого включены в цепи управления контролируемых механизмов [2].The closest technical solution to the proposed one is a device for audible warning for mountain combines, which ² contains a button and a siren connected in series, two pneumo-electric time relays and an AC .2 power supply, and an intermediate relay, the contacts of which are connected in the circuit control of controlled mechanisms [2].

Недостатком устройства является отсутствие автоматического контроля целостности цепи сирены и низкая надежность рабо5 ты устройства.The disadvantage of this device is the lack of automatic control of the integrity of the siren circuit and the low reliability of the device.

Цель изобретения — обеспечение автоматического контроля целостности цепи сирены и повышение надежности работы устройства.The purpose of the invention is the provision of automatic control of the integrity of the siren circuit and improving the reliability of the device.

Q Поставленная цель достигается тем, что в устройство введены блокирующее, переключающее и включающее реле, выпрямительный мост, резисторы и времязадающий конденсатор, один вывод одной диагонали выпрямительного моста соединен через пер5 вый резистор с кнопкой и через один замыкающий контакт блокирующего реле — с одним выводом источника питания, к другому выводу которого подключен другой вывод одной диагонали выпрямительного моста, к другой диагонали выпрямительного мос, та подключены последовательно соединенные второй резистор, времязадающий конденсатор, включающее и переключающее реле, зашунтированные третьим и четвертым резисторами, блокирующее и промежуточное реле соединены соответственно через замыкающий и размыкающий контакты переключающего реле и замыкающий контакт включающего реле с другим выводом одной диагонали выпрямительного моста, а другой вывод источника питания через другой замыкающий контакт блокирующего реле соединен с точкой соединения кнопки и сирены.Q The goal is achieved by the fact that a blocking, switching and switching relay, a rectifier bridge, resistors and a timing capacitor are introduced into the device, one output of one diagonal of the rectifier bridge is connected through the first resistor to the button and through one make contact of the blocking relay with one output of the source power supply, to the other terminal of which the other terminal of one diagonal of the rectifier bridge is connected, to the other diagonal of the rectifier mos, the second resistor is connected in series, time a master capacitor, including a switching relay, shunted by the third and fourth resistors, a blocking and an intermediate relay, respectively connected through the make and break contacts of the switching relay and the make contact of the make relay to the other output of one diagonal of the rectifier bridge, and the other output of the power source through another make contact of the blocking the relay is connected to the connection point of the button and the siren.

На чертеже представлена принципиальная схема устройства.The drawing shows a schematic diagram of a device.

Устройство содержит кнопку 1 с замыкающим контактом для включения сирены 2, первый резистор 3, выпрямительный мост 4, одна диагональ которого через замыкающий контакт блокирующего реле 5 подсоединена к источнику питания 6, в другую диагональ включены последовательно соединенные переключающее реле 7, включающее реле 8, времязадающий конденсатор 9 и резисторы 10, 11 и 12, промежуточное реле 13, контакты которого включены в выходную цепь.The device contains a button 1 with a make contact for turning on the siren 2, a first resistor 3, a rectifier bridge 4, one diagonal of which is connected to a power supply 6 through the make contact of the blocking relay 5, and a switching relay 7, including a relay 8, is connected to the other diagonal a capacitor 9 and resistors 10, 11 and 12, an intermediate relay 13, the contacts of which are included in the output circuit.

Устройство работает следующим образом.The device operates as follows.

В исходном состоянии схема обесточена. При замыкании кнопки 1 ток обтекает сирену 2, первый резистор 3, выпрямительный мост 4 и далее подключенные в другую диагональ моста резисторы 10—12, переключающее реле 7 и включающее реле 8 и времязадающий конденсатор 9. Однако из-за недостатка тока, сирена 2 не звучит.. Включаются переключающее реле 7 и включающее 8 и своими контактами включают блокирующее реле 5. После срабатывания блокирующего реле 5, его контакты подключают непосредственно к источнику питания 6 сирену 2 и выпрямительный мост 4. Сирена 2 звучит. При этом первый резистор 3 исключает возможность короткого замыкания (при нажатой кнопке 1) и является разделительным.In the initial state, the circuit is de-energized. When button 1 is closed, current flows around siren 2, first resistor 3, rectifier bridge 4 and then resistors 10-12 connected to another diagonal of the bridge, switching relay 7 and turning on relay 8 and timing capacitor 9. However, due to lack of current, siren 2 does not sounds .. Switching relay 7 is turned on and turning on 8, and with its contacts turn on blocking relay 5. After operation of blocking relay 5, its contacts connect directly to power supply 6 siren 2 and rectifier bridge 4. Siren 2 sounds. In this case, the first resistor 3 eliminates the possibility of a short circuit (when the button 1 is pressed) and is a dividing one.

После начала звучания сирены 2 кнопку 1 можно отпустить. Звучание сирены 2 продолжается до тех пор, пока ток заряда времязадающего конденсатора 9 не станет меньшим тока отпускания включающего реле 8 (переключающее реле 7 удерживается через резистор 12). С разрывом цепи блокирующего реле 5 его контакты размыкаются. Это приводит к обесточиванию выпрямительного моста 4 и отпусканию переключающего реле 7. Но с этого момента начинает разряжаться времязадающий конденсатор 9, через резистор 12 и включающее реле 8, что приводит к вторичному срабатыванию включающего реле 8 и включению промежуточного реле 13, которое находится во включенном состоянии пока ток разрядки не станет меньшим тока отпускания включающего реле 8. Таким образом, времязадающий конденсатор 9 совместно с резисторами 10—12 определяет время звучания сирены 2 и время, разрешающее включение контролируемых механизмов.After the sound of siren 2 starts, button 1 can be released. The sound of the siren 2 continues until the charge current of the timing capacitor 9 becomes less than the release current of the switching relay 8 (the switching relay 7 is held through the resistor 12). With a break in the circuit of the blocking relay 5, its contacts open. This leads to a de-energization of the rectifier bridge 4 and the release of the switching relay 7. But from this moment, the time-setting capacitor 9 starts to discharge, through the resistor 12 and the relay 8, which leads to the secondary operation of the relay 8 and the inclusion of the intermediate relay 13, which is in the on state until the discharge current becomes lower than the release current of the switching relay 8. Thus, the timing capacitor 9 together with the resistors 10-12 determines the sounding time of siren 2 and the time allowing the inclusion of oliruemyh mechanisms.

Резисторы 11 и 12 обеспечивают деление напряжения, что дает возможность применения конденсатора более низкого напряжения, т. е. более надежного. При отсутствии целостности цепи сирены, схема в работу- не включается.Resistors 11 and 12 provide voltage division, which makes it possible to use a lower voltage capacitor, that is, a more reliable one. In the absence of integrity of the siren circuit, the circuit does not turn on.

Устройство осуществляет автоматически контроль целостности цепи сирены, а единый времязадающий . элемент обеспечивает надежное функционирование времязадающей цепи. Устройство может быть применен но на многоприводных горных комбайнах и обеспечивает безопасность работ обслуживающего персонала.The device automatically controls the integrity of the siren circuit, and a single timing. The element provides reliable operation of the timing chain. The device can be used but on multi-drive mining combines and ensures the safety of staff.

Claims

The invention relates to warning signal devices and can be applied, in particular, in the mining industry. The devices for audible warning signal are known, which contain a siren, a generator connected to the control circuit via a rectifying bridge, a control thyristor connected to one diagonal rectifier bridge, the other diagonal of which is connected to a direct current network through the siren winding, and the output winding connected at one end through a resistor and a diode to the control electrode of the thyristor, and the other directly to the cathode of the thyristor 1. The disadvantages of these devices for sound signaling are their Low power consumption, since the siren time is not regulated. The closest technical solution to the present invention is a device for acoustic warning signaling for mining combines, which contains a button and a siren connected in series, two pneumoelectric time relays and an AC power source, and an intermediate relay whose contacts are included in the control circuits of controlled mechanisms 2 The disadvantage of the device is the lack of automatic control of the integrity of the siren circuit and the low reliability of the device. The purpose of the invention is to provide automatic control of the integrity of the siren circuit and increase the reliability of the device. The goal is achieved by blocking, switching and switching on a relay, a rectifying bridge, resistors and a time specifying a capacitor, one output of one diagonal of the rectifying bridge is connected through the first resistor to the button and through one closing contact of the blocking relay to one output power supply, to another output of which another output of one diagonal of the rectifying bridge is connected, to the other diagonal of the rectifying bridge. This is connected in series with the second resistor, the time setting capacitor, switching and switching relays, shunted by the third and fourth resistors, blocking and intermediate relays are connected respectively via the closing and closing contacts of the switching relay and the closing contact of the switching relay with another output of one diagonal of the rectifying bridge, and The other end of the power supply is connected via a different closing contact of the blocking relay to the connection point of the button and siren. The drawing shows a schematic diagram of the device. The device contains a button 1 with a closing contact for turning on the siren 2, the first resistor 3, a rectifying bridge 4, one diagonal of which is connected to the power source 6 through the closing contact of the blocking relay 5, the series-connected switching relay 7, including the relay 8, is connected to the other diagonal time specifies the capacitor 9 and resistors 10, 11 and 12, intermediate relay 13, the contacts of which are included in the output circuit. The device works as follows. In the initial state, the circuit is de-energized. When the button 1 is closed, the current flows around the siren 2, the first resistor 3, the rectifying bridge 4 and then the resistors 10-12 connected to another bridge diagonal, switching the relay 7 and turning on the relay 8 and the time setting capacitor 9. However, due to the lack of current, the siren 2 does not sound. Switching relay 7 and switching on 8 are turned on and using their contacts turn on blocking relay 5. After blocking relay 5 has been activated, its contacts are connected directly to power supply 6, siren 2 and rectifying bridge 4. Siren 2 sounds. In this case, the first resistor 3 eliminates the possibility of a short circuit (while the button 1 is pressed) and is separating. After the start of siren 2, button 1 can be released. The sound of the siren 2 continues until the charging current time of the master capacitor 9 becomes less than the release current of the on relay 8 (the switching relay 7 is held through the resistor 12). With the breaking of the blocking relay 5 circuit, its contacts open. This leads to de-energizing the rectifying bridge 4 and releasing the switching relay 7. But from this moment the time setting capacitor 9 starts to discharge, through the resistor 12 and the turning on relay 8, which leads to the secondary activation of the turning on relay 8 and turning on the intermediate relay 13, which is in the on state until the discharge current is less than the release current of the turn-on relay 8. Thus, the time specifying the capacitor 9 together with the resistors 10-12 determines the time of the siren 2 and the time allowing the switching on control mechanisms. Resistors 11 and 12 provide voltage sharing, which makes it possible to use a lower voltage capacitor, i.e., more reliable. In the absence of siren circuit integrity, the circuit is not included in the operation. The device automatically monitors the integrity of the siren circuit, and a single time setting. element ensures reliable operation of the timing circuit. The device can be used but on multi-drive mining combines and ensures the safety of the staff. Apparatus of the Invention A device for audible warning signaling comprising a series-connected siren and a button, source. The power nickname and intermediate relay, whose contacts are included in the output circuit, is characterized in that, in order to increase reliability, a blocking, switching and switching relay, rectifier bridge, resistors and time setting capacitor are entered into it, one output of one rectifier diagonal the bridge is connected through the first resistor to the button and through one closing contact of the blocking relay to one output of the power supply, to the other output of which another output of one diagonal of the rectifying bridge is connected, to another The rectifier bridge is connected in series with a second resistor, the time setting capacitor, the switching and switching relay, shunted by the third and fourth resistors, the blocking switch, and the intermediate relay are connected respectively by the closing and closing contacts of the switching relay and the closing contact of the switching relay to another output of one rectifying diagonal the bridge and the other output of the power source through another make contact of the blocking relay is connected to the junction point of the button and the sire us. Sources of information taken into account in the examination 1. USSR author's certificate number 382119, cl. G 08 B 3/10 1971.

2. Bazer I. And, Roadheaders. “Nedra, 1974, p. 252 (prototype).