Mining chain tensioner winches have very good performance and are widely used in the market. Many users choose winches for mining floors when they buy rollers, but they are prone to malfunction when they are used according to the requirements. Especially the protection system of the winch is prone to problems, but usually due to the door, such problems occur, as long as it can be replaced immediately. Problems in the mining heavy-duty tensioner winch are looking for the protection system. For example, if the safety circuit is damaged, if the safety circuit is gone, and other situations as well, if there are any electrical components and hydraulic workstation components of the mine car, there may be any errors. Not a major error. You must understand the system before you can make repairs. The deceleration point is on the depth indicator, change the travel switch of the upper and lower deceleration point to the adjustment position, to decelerate to where, where to put it? Inverter car inverter failure, that is, line failure, the control program is generally no problem, and you do not change, the protection is also no problem.