Here is a list of 62 Safety Devices categories. It encompasses a wide range including resettable fuses, safety equipment & supplies, varistors, fuses, etc. You can search for an overview, principle, and usage of each category, as well as find manufacturers and distributors.
Safety devices are devices installed in equipment and vehicles to prevent equipment damage, accidents, and disasters caused by malfunctions and overloads. Safety devices are also used to prevent equipment damage or emergency stop to prevent accidents or disasters from occurring even if the person using or operating the equipment makes a mistake.
Safety devices are broadly classified into two categories based on differences in design concepts.
Fail-safe is a safety device designed to prevent accidents or disasters from developing into accidents or disasters in the event of equipment failure or natural disasters such as earthquakes.
For example, the circuit breakers at railroad crossings are designed to come down when the power goes out. When the breaker is down, no matter when a train arrives, cars cannot pass through the crossing, thus preventing train accidents.
In addition, oil stoves are designed to detect shaking when an earthquake occurs and automatically shut off so that fires will not occur even if the stove is knocked over by the earthquake. Other safety devices prevent damage to equipment by releasing pressure to the atmosphere when pressure rises beyond what is necessary in equipment that uses high-pressure air.
Foolproof is a safety device designed to prevent accidents or disasters from occurring even if human error occurs in the person operating the machine.
For example, a washing machine is designed to lock the lid so that it will not open while the washing tank is spinning, even if the stop button is pressed, to prevent hands from getting caught in the tank while it is spinning.
In manufacturing plants, for example, sensors react when a part of the body enters the equipment during operation to immediately trigger an emergency stop in order to prevent accidents involving entrapment or pinching.
There are various uses for safety devices, depending on the site and machine where they are installed.
Breakers are installed in a wide range of applications, from households to businesses, to prevent fires caused by short circuits or overheating by shutting off the electrical circuit when a current over a certain level flows through the equipment.
A moment limiter prevents serious accidents from occurring by controlling the movement of cranes in unstable directions when they are overloaded beyond the specified load limit.
Safety valves are installed on hydraulic cranes and other machines operated by hydraulic equipment to reduce excessive pressure on the hydraulic system and prevent damage to the system by bypassing the pressure above a certain level.
Presses used for metal processing are subject to extremely high pressures, so it is essential to have safety devices to prevent any part of the human body from entering the press, and to stop the machine in an emergency if such a situation should occur.
If something gets caught in or touches the door of an elevator or lift that automatically closes, the door will automatically open to prevent an accident.
Jack interlock devices are installed on jacks used for lifting heavy loads, etc. These devices include jack interlock devices that prevent forgetting to set the jack at the start of work and boom interlock devices that prevent accidental operation during work.
The following are typical examples of the types of safety devices, divided into fail-safe and foolproof.
*This ranking is solely among the companies registered with Metoree, sorted by the number of employees. Please use this as a rough guide to understand their scale.