Application scenario and principle of limit switch

Limit switch is widely used in construction, port, mining and other industries of lifting, transportation machinery space three-dimensional control and restriction, limit switch of a large proportion of high precision limit switch gear reducer and its output shaft synchronous control mechanism, sensor, mechanical memory because of WTAU series limit switch, high precision, small size limit can be adjusted, The characteristics of strong versatility and easy maintenance installation and use are widely used in construction machinery.

Limit switches, which are meant to protect built-in microswitches from external forces, such as water, oil, gas and dust damage, and switches assembled in the shell, are especially suitable for mechanical strength and to adapt to special environmental requirements.

The shapes are roughly divided into horizontal, vertical and compound. The following is a typical vertical limit switch construction type. Limit switches are usually made up of five components.

Limit switches, also known as travel switches, can be mounted on relatively static objects (such as fixed frames, door frames, or still life), or on moving objects (such as cars, doors, or animals). In animal still life, the connecting rod near the switch drives the switch contact, causing the closed contact to break or the broken contact to close. Switch on and off contact state changes of the control circuit and machine.