How to adjust the limit switch of rolling shutter door

1. Turn the nut clip on the limiter to an appropriate angle to loosen the limiter nut or loosen the locking screw on the limiter.

2. After opening the door to a proper position, turn the limit nut on the limiter and press the roller on the door opening limit switch. After hearing the "click" sound, clamp the nut into the corresponding groove of the limit nut or tighten the screw.

3. If the opening and closing position is inappropriate, it can be adjusted again to achieve the best position.

Extended data

Limit switches, also known as travel switches, can be installed on relatively static objects (such as fixed frames and doorframes). Still life) or moving objects (such as cars, doors, etc.). , referred to as animals). When an animal approaches a still life, the connecting rod of the switch drives the contact of the switch, so that the closed contact is opened or the opened contact is closed. The circuit and motor are controlled by the change of the open and close state of the switch contact.

Use:

1, daily life:

Limit switches have many applications, which are found in many electrical appliances. So what can such a simple switch do? Mainly plays the role of chain protection. The most common example is its application in washing machines and tape recorders (VCRs).

During the dehydration (spin-drying) of the washing machine, the rotation speed is very high. If someone opens the door or lid of the washing machine and then puts his hand in, it is easy to hurt people. In order to avoid this kind of accident, an electric contact is installed on the door or cover of the washing machine.

Once someone opens the door or cover of the washing machine, the motor will automatically turn off, even through mechanical linkage, so as long as the door or cover is opened, it will immediately "brake" and force the rotating parts to stop, so as not to hurt people.

In tape recorders and video recorders, we often use fast forward or rewind, and the tape rotates rapidly, but it will stop automatically at the end of the tape. Here, the travel switch works again, but this time it is not caused by a collision, but by a sudden increase in tape tension.

2. Industry:

The limit switch is mainly used to convert mechanical displacement into electrical signal, thus changing the running state of the motor, thus controlling mechanical action or being used as program control.

The real use of limit switch is in industry, which cooperates with other equipment to form more complex automation equipment.

There are many such limit switches on the machine tool, which are used to control the movement of the workpiece or the stroke of automatic feed to avoid collision accidents. Sometimes the limit switch is used to make the controlled object automatically change direction between two designated positions, so as to get continuous reciprocating motion. For example, when the automatic delivery vehicle reaches the end point and touches the limit switch, when the rollover mechanism is turned on, the materials in the vehicle are overturned and return to the starting point.

After reaching the starting point, touch the travel switch of the starting point, connect the circuit of the charging mechanism, and start automatic loading. If this continues, it will become an automated production line, with no one in charge and working day and night, saving people's physical labor.

Baidu encyclopedia: limit switch