During the working process of the belt conveyor, when the speed of the drive drum is not synchronized with the speed of the conveyor belt for some reason, there will be relative sliding between the two, resulting in slippage. There are two types of skidding: low-speed skidding and high-speed skidding. The reason for low-speed slippage is that the frictional traction of the roller is reduced, the conveyor belt is stuck or the tension force is insufficient, etc. This situation is common; high-speed slippage generally occurs when the lower belt conveyor motor is generating power, and the belt conveyor is running at high speed. , which is rare.
The working principle of the slip protection system is to compare and analyze the speed of the conveyor belt by detecting the speed change of the conveyor belt and the speed of the drive drum. There is no difference between the two during normal operation. If slip occurs, there will be a difference between the two. When the belt speed exceeds its normal value When the value is 10% or lower than 25%-30% of its normal value, a slip alarm signal will be issued, and the user can stop the control network at this time, which can prevent production accidents caused by conveyor belt slippage, and avoid Unnecessarily frequent braking.