Limit switches are widely used, so what is the function of limit switches? Limit switch refers to the switch assembled in the electrical enclosure to protect the microswitch from external force, oil, water, gas and dust, which is especially suitable for places with special requirements on mechanical strength and environmental adaptability. The shapes of limit switches can be roughly divided into vertical, horizontal and composite types. The limit switch is suitable for the control and limit of lifting and transportation machinery and three-dimensional coordinates in ports, buildings, mines and other industries. The limit switch consists of a high-precision reducer with large transmission ratio, a mechanical memory control mechanism and a sensor synchronized with the output shaft.
I believe most people don't know much about this problem. Before understanding the function of the limit switch, let's first understand the working principle of the limit switch. Limit switch refers to the electrical switch that limits the movement limit position of mechanical equipment. According to different usage methods, limit switches can be divided into contact type and non-contact type. Contact type is to install a travel switch on the moving parts of mechanical equipment, and install a limit stop at the fixed point of relative movement, and vice versa. When the mechanical contact of the travel switch touches the stop, the control circuit can be effectively cut off or changed, and the machine stops running or changes running.
The most important function of limit switch must be its protection. Limit switch, also known as travel limit switch, is mainly used to control the travel of mechanical equipment and carry out limit protection. In practical application, the travel limit switch is installed in the pre-arranged position. When the module installed in the moving parts of the production machinery impacts the travel, the contact of the travel limit switch moves and switches between circuits effectively. Limit switch refers to an electrical appliance that switches the circuit correctly according to the travel position of the moving parts, and its action principle is similar to that of a button. Widely used in various machine tools, lifting machinery, etc. To control their travel and perform terminal limit protection.
In fact, many people in life don't know what the limit switch is, because we usually use it less. In construction, mining and other industries, limit switches have played a very good role. For example, when the machine stops, the limit switch can effectively change the control circuit, which can stop the machine and greatly improve the safety.