The limit device of high pole lamp is used to limit the rising height of lamp plate, will not lead to lamp plate because of rising too high and hit the pulley platform of the top end, limit in a certain space to make lamp plate hook off hanging freely.

Although the small limit device on the high light is very important, but it is often ignored by the high light manufacturers, the reason is often ignored is that many construction teams do not understand the working principle of the limit switch, the location of the installation of the switch should be just right, think of these complex problems, simply do not need.

Travel switch plays a pivotal role in the high light, but without it can also make the lamp plate as usual free rise and fall, it is precisely because of this special factor, making many high light manufacturers have many reasons for not limiting travel switch. One of the most powerful is this reason: when the use of high pole lamp installation, due to the aging of the line for a long time, travel switch failure how to do? Using this reason as an excuse not to install the travel switch can completely convince customers, because once the travel switch problems will largely lead to the lamp disc can not drop, and finally can only use the crane for debugging and maintenance. But surely the probability of a trip switch failing is too low. Low enough to be negligible.

Although the height lamp can be raised and lowered normally without a limit switch, this is only possible during the day, and for high height lamps, such as those over 27 meters, accurate hooking is required even during the day with the aid of a telescope. High pole lamps with no limit can be difficult and dangerous to hook accurately if installed at night. Want to eliminate these risk factors, the best way is to install two limit switches, so both convenient and safe. Although the connection debugging is tedious but can be once and for all.

The lamp disc limit of the high pole lamp