阅读说明：本技术 一种砂轮机安全操作监控防护系统 (Safe operation monitoring and protecting system of grinding machine ) 是由 梁映红 吴巨洪 王晓晨 杨均宇 陆江 吴明君 于 2019-10-31 设计创作，主要内容包括：本发明提供了一种砂轮机安全操作监控防护系统；包括PLC控制器、光电传感器、断路器、继电器、报警器,所述光电传感器与PLC控制器的输入端连接,所述断路器、继电器、报警器与PLC控制器的输出端连接,所述光电传感器、报警器在每台砂轮机上分别配制若干个。本发明通过光电传感器的监测,及时纠正砂轮机在操作过程中的习惯性不安全操作行为和采取必要的断电停机手段对操作者进行安全保护。(The invention provides a grinding machine safe operation monitoring and protecting system; the automatic grinding machine comprises a PLC (programmable logic controller), a photoelectric sensor, a circuit breaker, a relay and an alarm, wherein the photoelectric sensor is connected with the input end of the PLC, the circuit breaker, the relay and the alarm are connected with the output end of the PLC, and the photoelectric sensor and the alarm are respectively provided with a plurality of grinding machines. The invention can correct the habitual unsafe operation behavior of the grinder in the operation process in time and carry out safety protection on an operator by adopting a necessary power-off shutdown means through the monitoring of the photoelectric sensor.)

1. The utility model provides a grinder safe operation control protection system which characterized in that: the automatic grinding machine comprises a PLC (programmable logic controller), a photoelectric sensor, a circuit breaker, a relay and an alarm, wherein the photoelectric sensor is connected with the input end of the PLC, the circuit breaker, the relay and the alarm are connected with the output end of the PLC, and the photoelectric sensor and the alarm are respectively provided with a plurality of grinding machines.

2. The grinder safe operation monitoring and protection system of claim 1, wherein: the quantity of the photoelectric sensors and the quantity of the alarm prepared on each grinding machine are respectively 4 and 2, wherein two photoelectric sensors are respectively arranged right above two grinding wheels of the grinding machine, one alarm is respectively arranged above the two photoelectric sensors, and the other two photoelectric sensors are arranged right in front of the center of the grinding machine in the middle detection direction of the grinding machine.

3. The grinder safe operation monitoring and protection system of claim 1, wherein: every 7 input terminals of PLC controller are a set of, and every group input terminal all is connected with 3 switches and 4 photoelectric sensor, and the one end of 4 sensors is connected alone with PLC's terminal respectively, and the other end is connected with the power end of PLC controller, and 3 switches are 1 rotary switch and 2 button switch respectively and one end is connected alone with PLC's terminal respectively, and the other end is through being connected with PLC's COM end.

4. The grinder safe operation monitoring and protection system of claim 1, wherein: a public end and 3 signal ends of the output end of the PLC are in a group, the public end is connected with a fuse and then connected with a power supply live wire pole of the grinding machine, the signal ends are respectively connected with two alarms and a relay, the other ends of the two alarms and the relay are connected with a zero wire pole of the grinding machine, and the PLC and the grinding machine use the same power supply.

5. The grinder safe operation monitoring and protection system of claim 4, wherein: the contacts of the relay are installed in branch power lines of each grinder.

6. The grinder safe operation monitoring and protection system of claim 1, wherein: the alarm is an audible and visual alarm.

7. The grinder safe operation monitoring and protection system of claim 1, wherein: the circuit breaker is installed on the grinder power bus.

Technical Field

The invention relates to a safe operation monitoring and protecting system of a grinding machine.

Background

The safety operating rules of the grinder are specified as follows: an operator should stand on the side surface of the grinder, and the operator is strictly prohibited to stand on the front side; it is strictly forbidden for two people to use one grinder at the same time. Many operators are prone to habitually unsafe operation behaviors of standing on the front side of the grinder or using one grinder by two persons at the same time in the actual operation process of the grinder. At present, firstly, there is no suitable mature equipment on the market for safety protection against this habitual unsafe behaviour that is easy for the grinder operator to produce. Secondly, in order to correct the habitual unsafe operation behavior of an operator in the operation process of the grinding machine, a part of safety standardized standard-reaching enterprises which highly pay attention to safe production adopt that a stepping type protective isolation cover is additionally arranged on the grinding machine body, and adopt that the mechanical movement of the isolation cover is controlled in a stepping mode through an electronic control technology so as to achieve the purpose of isolating the grinding wheel from a grinding part. The mode has the advantages that the single grinding machine is high in modification cost and long in period, and is not suitable for popularization, if a plurality of grinding machines are modified simultaneously, the modification cost is further improved, and meanwhile, certain potential safety hazards still exist in the modification; secondly, because the working environment of the grinder is relatively severe, the reliability of the electronic product cannot absolutely meet the requirement for safety protection.

Disclosure of Invention

In order to solve the technical problem, the invention provides a grinding machine safe operation monitoring and protecting system.

The invention is realized by the following technical scheme.

The invention provides a grinding machine safe operation monitoring and protecting system; the automatic grinding machine comprises a PLC (programmable logic controller), a photoelectric sensor, a circuit breaker, a relay and an alarm, wherein the photoelectric sensor is connected with the input end of the PLC, the circuit breaker, the relay and the alarm are connected with the output end of the PLC, and the photoelectric sensor and the alarm are respectively provided with a plurality of grinding machines.

The quantity of the photoelectric sensors and the quantity of the alarm prepared on each grinding machine are respectively 4 and 2, wherein two photoelectric sensors are respectively arranged right above two grinding wheels of the grinding machine, one alarm is respectively arranged above the two photoelectric sensors, and the other two photoelectric sensors are arranged right in front of the center of the grinding machine in the middle detection direction of the grinding machine.

Every 7 input terminals of PLC controller are a set of, and every group input terminal all is connected with 3 switches and 4 photoelectric sensor, and the one end of 4 sensors is connected alone with PLC's terminal respectively, and the other end is connected with the power end of PLC controller, and 3 switches are 1 rotary switch and 2 button switch respectively and one end is connected alone with PLC's terminal respectively, and the other end is through being connected with PLC's COM end.

A public end and 3 signal ends of the output end of the PLC are in a group, the public end is connected with a fuse and then connected with a power supply live wire pole of the grinding machine, the signal ends are respectively connected with two alarms and a relay, the other ends of the two alarms and the relay are connected with a zero wire pole of the grinding machine, and the PLC and the grinding machine use the same power supply.

The contacts of the relay are installed in branch power lines of each grinder.

The alarm is an audible and visual alarm.

The circuit breaker is installed on the grinder power bus.

The invention has the beneficial effects that: through the monitoring of the photoelectric sensor, habitual unsafe operation behaviors of the grinder in the operation process are corrected in time, and necessary power-off shutdown measures are adopted to carry out safety protection on operators.

Drawings

FIG. 1 is a schematic wiring diagram of a PLC of the present invention;

FIG. 2 is a schematic diagram of the grinder power supply circuit of the present invention;

FIGS. 3 to 6 are control program diagrams according to the present invention.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

A grinding machine safe operation monitoring and protecting system; the automatic grinding machine comprises a PLC (programmable logic controller), a photoelectric sensor, a circuit breaker, a relay and an alarm, wherein the photoelectric sensor is connected with the input end of the PLC, the circuit breaker, the relay and the alarm are connected with the output end of the PLC, and the photoelectric sensor and the alarm are respectively provided with a plurality of grinding machines.

The quantity of the photoelectric sensors and the quantity of the alarm prepared on each grinding machine are respectively 4 and 2, wherein two photoelectric sensors are respectively arranged right above two grinding wheels of the grinding machine, one alarm is respectively arranged above the two photoelectric sensors, and the other two photoelectric sensors are arranged right in front of the center of the grinding machine in the middle detection direction of the grinding machine.

Every 7 input terminals of PLC controller are a set of, and every group input terminal all is connected with 3 switches and 4 photoelectric sensor, and the one end of 4 sensors is connected alone with PLC's terminal respectively, and the other end is connected with the power end of PLC controller, and 3 switches are 1 rotary switch and 2 button switch respectively and one end is connected alone with PLC's terminal respectively, and the other end is through being connected with PLC's COM end.

A public end and 3 signal ends of the output end of the PLC are in a group, the public end is connected with a fuse and then connected with a power supply live wire pole of the grinding machine, the signal ends are respectively connected with two alarms and a relay, the other ends of the two alarms and the relay are connected with a zero wire pole of the grinding machine, and the PLC and the grinding machine use the same power supply.

The contacts of the relay are installed in branch power lines of each grinder.

The alarm is an audible and visual alarm.

The circuit breaker is installed on the grinder power bus.