The travel switch ( English as travel switch ) also known as the limit switch, as the name implies, is a by changing the position of the switch control circuit. The most classic of travel switch is on top of the refrigerator is used, when you open the refrigerator, finding some lights, rear lights are shut out. In fact, this is precisely through the travel switch to achieve. Small things also have large application, and so clever. In addition to the refrigerator on the application of external, in other appliances, such as washing machine, video recorders can find travel switch. Washing machine dehydration process speed is very high, if someone inadvertently open washing machine door or cover, and then extend the hand, very easy to cause injury, in order to avoid this kind of accident, in the washing machine door or cover is provided with electrical contacts, once open washing machine a door or lid, will automatically put electrical power, even by mechanical method to linkage, to ensure safety. The realization of this function is the application of a travel switch interlock protection.
In addition to the electrical products in a wide range of applications, its main use is industrial and other equipment in common use, composed of various automation equipment. General purpose stroke switches: such as JW2, JW2A, LX19, LX31, LXW5, 3SE3 series. Mainly used for machine tools and other production machinery, automatic production line spacing and program control. The actual production work, prior to the stroke switch according to the technical requirement of installation in a certain position, component in the operation of the travel switch, hit the contact action and Realization of circuit switching, to control the moving parts of the purpose of travel position. While similar to LX22, LX33 series switch. Mainly used to restrict lifting equipment and a variety of metallurgical auxiliary mechanical limit switch.
The 1 travel switch, dry point is not closed or the bad contact
This kind of failure to contact surface cleaning, have drawn fouling caused by. Therefore, deal with the travel switch regular inspection, remove grease, dust, clean up the contacts, and regularly check whether any action is reliable, troubleshooting, lest cause accidents in production and the personal safety accident. Maintenance should pay attention to the travel switch transmission mechanism is loosening or displacement transmission mechanism, timely adjust stroke overtravel, kept in a predetermined limit value of 50%
- 70% view range.
2 stroke switch action
Switch action to end pressure switch, switch fixed screw loosening, loosening or displacement of the transmission mechanism, the switch was damaged, mechanism of failure, impurities into the switch, so that mechanical Phi stuck rod causes.
3 stroke switch reset
Switch reset for the moving parts or block overtravel too much, mechanical failure, switch school block, impurities into the switch, so that the mechanical part is stuck, switch reset spring failure, elastic enough to make contacts cannot be reset and closed causes.
The above information by the country electric switch factory for you, www.jiandq.com