CN211569900U - Device for controlling metallurgical crown block band-type brake through double-loop output series connection - Google Patents

Abstract

The utility model discloses a device of metallurgical overhead traveling crane band-type brake stopper of two return circuits output series control, the device include first circuit breaker, second circuit breaker and combination circuit breaker, the inlet wire end of first circuit breaker, second circuit breaker and combination circuit breaker is connected with the live wire respectively, the leading-out terminal and the digital output module of first circuit breaker are connected, digital output module's Q0.0 and Q0.1 terminal are connected with A return circuit output relay and B return circuit output relay respectively, A return circuit output relay and B return circuit output relay are connected with the zero line respectively. The utility model discloses can effectively avoid single PLC output circuit, single electric control circuit and the single contactor main contact control band-type brake contactor that adopts at present, when the fault phenomenon, can lead to the unable outage of metallurgical overhead traveling crane main loop to cause the metallurgical overhead traveling crane to take place to hang the risk that the thing falls, molten steel splashes, the problem that causes serious threat to ground post personnel personal safety and equipment safety.

Description

Device for controlling metallurgical crown block band-type brake through double-loop output series connection

Technical Field

The utility model relates to a band-type brake technical field, in particular to metallurgical overhead traveling crane band-type brake's of two return circuits output series control device.

Background

In recent years, with the continuous development of iron and steel enterprises, the productivity and scale of the enterprises are continuously enlarged, and the safety accidents therewith are also continuously increased. The metallurgical crown block is one of important devices in iron and steel enterprises, belongs to the field of special device management, and is of great importance to enterprise production and safety indexes on how to improve the safety of the metallurgical crown block.

At present, a single PLC output circuit, a single electric control circuit and a single contactor main contact are mostly adopted for the main/auxiliary lifting and the cart traveling of a metallurgical crown block of a steel enterprise to control a band-type brake contactor, when a fault phenomenon occurs, the main circuit of the metallurgical crown block cannot be powered off, so that the metallurgical crown block has the risks of hanging object falling and molten steel splashing, the personal safety of ground post personnel and equipment safety are seriously threatened, and once the fault occurs, huge losses are brought to the safety and economy of the enterprise.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a metallurgical overhead traveling crane band-type brake stopper of two return circuits output series control's device can avoid the single PLC output circuit, single pneumatic control circuit and the single contactor main contact control band-type brake contactor that adopt at present, when the fault phenomenon, can lead to the unable outage of metallurgical overhead traveling crane main loop to cause the metallurgical overhead traveling crane to take place to hang the thing and fall, the risk that the molten steel splashes, the problem that causes serious threat to ground post personnel personal safety and equipment safety.

In order to achieve the above object, the technical solution of the present invention is specifically as follows:

a device of a metallurgical crown block band-type brake with double-loop output series control comprises a first circuit breaker, a second circuit breaker and a combined circuit breaker, wherein the inlet ends of the first circuit breaker, the second circuit breaker and the combined circuit breaker are respectively connected with a live wire, the outlet end of the first circuit breaker is connected with a digital output module, the Q0.0 and Q0.1 terminals of the digital output module are respectively connected with an A loop output relay and a B loop output relay, the A loop output relay and the B loop output relay are respectively connected with a zero line, the outlet end of the second circuit breaker is respectively connected with a normally open contact of the A loop output relay and a normally open contact of the B loop output relay, the normally open contact of the A loop output relay is connected with the zero line through the A loop output contactor, the normally open contact of the B loop output relay is connected with the zero line through the B loop output contactor, the leading-out terminal and the A return circuit output contactor normally open contact of combination circuit breaker are connected, A return circuit output contactor normally open contact is connected with B return circuit output contactor normally open contact, B return circuit output contactor normally open contact is connected with first band-type brake motor and second band-type brake motor respectively.

The circuit A is connected with a first resistor in parallel on the circuit A output relay, the first resistor is connected with a zero line after being connected with a first capacitor in series, the circuit B is connected with a second resistor in parallel on the circuit B output relay, and the second resistor is connected with the zero line after being connected with a second capacitor in series.

The circuit A output contactor is connected with a circuit A output indicator lamp in parallel, and the circuit B output contactor is connected with a circuit B output indicator lamp in parallel.

The utility model has the advantages that: the utility model relates to a double PLC output circuit and double electrical control circuit, which overcomes the risk that the metallurgical overhead traveling crane will fall and the molten steel will splash due to the failure of the main circuit caused by the failure of the main contact control of the single PLC output circuit, the single electrical control circuit and the single contactor, namely the digital output module is respectively connected with the A circuit output relay and the B circuit output relay, the second circuit breaker is respectively connected with the A circuit output contactor and the B circuit output contactor, the mode of the double PLC output channel, the double intermediate relay and the double contactor double circuit output series connection is realized to control the band-type brake, the main circuit can be cut off by only one point in the double circuit, the metallurgical safe and reliable band-type brake is realized, wherein, in order to protect the circuit stability and the power utilization safety of the A circuit output relay and the B circuit output relay, through being parallelly connected with A return circuit output relay after establishing ties first resistor and first condenser to and parallelly connected with B return circuit output relay after establishing ties second resistor and second condenser, in order to can be for the audio-visual demonstration second circuit breaker of operation, whether A return circuit output relay normally open contact and B return circuit output relay normally open contact communicate to get electric, parallelly connected A return circuit output pilot lamp on the A return circuit output contactor, parallelly connected B return circuit output pilot lamp on the B return circuit output contactor.

Drawings

Fig. 1 is a schematic circuit diagram of the present invention.

Detailed Description

As shown in figure 1, the device for controlling the metallurgical crown block band-type brake by double-loop output series comprises a first circuit breaker 1, a second circuit breaker 9 and a combined circuit breaker 14, wherein the inlet ends of the first circuit breaker 1, the second circuit breaker 9 and the combined circuit breaker 14 are respectively connected with a live wire, the outlet end of the first circuit breaker 1 is connected with a digital output module 2, the Q0.0 and Q0.1 terminals of the digital output module are respectively connected with an A loop output relay 3 and a B loop output relay 6, the A loop output relay 3 and the B loop output relay 6 are respectively connected with a zero line, the outlet end of the second circuit breaker 9 is respectively connected with an A loop output relay normally open contact 17 and a B loop output relay normally open contact 18, the A loop output relay normally open contact 17 is connected with the zero line through an A loop output contactor 10, the B loop output relay normally open contact 18 is connected with the zero line through a B loop output contactor 12, the leading-out terminal of combination circuit breaker 14 is connected with A return circuit output contactor normally open contact 19, A return circuit output contactor normally open contact 19 is connected with B return circuit output contactor normally open contact 20, B return circuit output contactor normally open contact 20 is connected with first band-type brake motor 15 and second band-type brake motor 16 respectively, parallelly connected first resistor 4 on A return circuit output relay 3, first resistor 4 is connected with the zero line after establishing ties with first condenser 5, parallelly connected second resistor 7 on B return circuit output relay 6, second resistor 7 is connected with the zero line after establishing ties with second condenser 8, parallelly connected A return circuit output pilot lamp 11 on A return circuit output contactor 10, parallelly connected B return circuit output pilot lamp 13 on B return circuit output contactor 12.

When the utility model is used, the first breaker 1 is closed, the PLC double-channel output loop is electrified for working, the second breaker 9 is closed, the electric control loop is electrified for working, the combined breaker 14 is closed, the electric main loop is electrified for working, when the metallurgical crown block needs to open the band-type brake, the PLC program controls the digital output module 2 to output Q0.0 and Q0.1, Q0.0 controls the output of the A loop, Q0.1 controls the output of the B loop, the A loop output relay 3 and the coil of the B loop output relay 6 are electrified for attracting, the normally open contact 17 of the A loop output relay and the normally open contact 18 of the B loop output relay are closed, so that the coil of the A loop output contactor 10 and the coil of the B loop output contactor 12 are electrified for attracting, the normally open contact 19 of the A loop output contactor and the normally open contact 20 of the B loop output contactor are closed, the first band-type brake motor 15 and the second band-type brake motor 16 work, the opening of the band-type brake is completed, meanwhile, the first resistor 4 and the first capacitor 5 work, the second resistor 7 and the second capacitor 8 work, the loop A output indicator lamp 11 is turned on, the loop B output indicator lamp 13 is turned on, and the opening of the band-type brake of the metallurgical crown block is controlled by double-loop output series connection. On the contrary, when the metallurgical overhead traveling crane needs to close the band-type brake, 2 binary channels of PLC program control digital output module output Q0.0Q 0.1 cancel, loop A output relay 3 loses the electricity with loop B output relay 6 coil, loop A output relay normally open contact 17 and loop B output relay normally open contact 18 disconnection, loop A output contactor 10 loses the electricity with loop B output contactor 12 coil, loop A output contactor normally open contact 19 and loop B output contactor normally open contact 20 disconnection, first band-type brake motor 15 and second band-type brake motor 16 stop working, the real metallurgical overhead traveling crane band-type brake stopper is closed.

Claims (3)

1. The utility model provides a device of metallurgical overhead traveling crane band-type brake stopper of two return circuits output series control which characterized in that: including first circuit breaker (1), second circuit breaker (9) and combination circuit breaker (14), the inlet wire end of first circuit breaker (1), second circuit breaker (9) and combination circuit breaker (14) is connected with the live wire respectively, the leading-out terminal and the digital output module (2) of first circuit breaker (1) are connected, the Q0.0 and Q0.1 terminal of digital output module are connected with A return circuit output relay (3) and B return circuit output relay (6) respectively, A return circuit output relay (3) and B return circuit output relay (6) are connected with the zero line respectively, the leading-out terminal of second circuit breaker (9) is connected with A return circuit output relay normally open contact (17) and B return circuit output relay normally open contact (18) respectively, A return circuit output relay normally open contact (17) is connected with the zero line through A return circuit output contactor (10), b return circuit output relay normally open contact (18) are connected with the zero line through B return circuit output contactor (12), the leading-out terminal and A return circuit output contactor normally open contact (19) of combination circuit breaker (14) are connected, A return circuit output contactor normally open contact (19) are connected with B return circuit output contactor normally open contact (20), B return circuit output contactor normally open contact (20) are connected with first band-type brake motor (15) and second band-type brake motor (16) respectively.

2. The device for controlling the brake of the metallurgical crown block in series by the double-loop output according to claim 1, is characterized in that: a loop output relay (3) is connected with a first resistor (4) in parallel, the first resistor (4) is connected with a zero line after being connected with a first capacitor (5) in series, a loop output relay (6) is connected with a second resistor (7) in parallel, and the second resistor (7) is connected with the zero line after being connected with a second capacitor (8) in series.

3. The device for controlling the brake of the metallurgical crown block in series by the double-loop output according to the claim 1 or 2, is characterized in that: a loop output indicator lamp (11) is connected to the loop output contactor (10) in parallel, and a loop output indicator lamp (13) is connected to the loop output contactor (12) in parallel.

Images