Introduce the safety requirements of control mechanism, protective device and inspection and maintenance of machining equipment

In the last article, we talked about the general requirements for the safety requirements of mechanical processing equipment. I believe readers should understand this. We will continue to in-depth knowledge about this area and introduce the following content: requirements for control mechanisms, requirements for protective devices, and The requirements for inspection and maintenance will be elaborated on these three parts in detail below. 1. Requirements for the control mechanism (1) For machining equipment, protection devices must be installed to prevent accidental start and cause danger. This is also to protect the safety of the operator. (2) The control circuit must not be dangerous after the circuit is damaged. (3) If the control system is automatic or semi-automatic, it is functionally required to eliminate the hazards caused by accidents or to install protective devices. (4) If the power supply of the equipment is accidentally cut off during the working process, the two actions of braking and clamping cannot be interrupted at this time; when the power supply is reconnected, the equipment cannot start automatically. (5) If the equipment is dangerous, it should also be equipped with monitoring devices. 2. Requirements for protective devices Protective devices include two types, one is a safety protection device, and the other is an emergency stop switch. (1) Safety protection device a. Structural requirements: simple structure, reasonable layout, and not sharp edges and flanges. b. Performance requirements: within the specified life, there is sufficient reliability, rigidity and strength, good stability, and corrosion resistance. c. The safety protection device should be interlocked with the operation of the equipment, and it is required that the equipment cannot start operation before the safety protection device does not work. d. The photoelectric, induction and other safety protection devices should also be equipped with alarm devices, which can warn when the device itself fails. (2) Emergency stop switch a. The shape and color of the emergency stop switch should be distinguished from the general control switch. Generally, the color of the emergency stop switch is red. b. The arrangement position of the emergency stop switch should be convenient for the operator to operate, and will not cause danger. c. When the emergency stop switch is pressed, all movements of the equipment should be terminated instantaneously. If the equipment has inertia, it should also be interlocked with the brake or clutch to quickly terminate the operation. 3. Requirements for inspection and maintenance (1) It is generally required that mechanical processing equipment must comply with regulations during transportation, handling, installation, use, disassembly, and maintenance, and must not violate regulations. (2) Daily maintenance During the refueling or daily inspection of mechanical processing equipment, workers should not enter the dangerous area. (3) Inspection and repair in the hazardous area If the equipment is inspected and repaired in the hazardous area, corresponding protective measures must be taken to prevent danger. Unless otherwise specified, the article is original by Tiecheng Machinery Processing Factory, welcome to reprint! Please indicate the address of this article for reprinting, thank you. Article source: http://www.wxdtc.com/