a.Insufficient braking torque:
- Brake belt or brake wheel worn seriously or partially damaged;
- There is oil stain or loose main spring between brake belt and brake wheel;
- Some parts are stuck, worn, loose and so on, such as movable hinge clamping, locking nut loose, resulting in adjustment lever loose;
- The drive system of the slack brake is inflexible.
b.The brakes suddenly failed:
- Severe wear or damage of brake belt;
- The long stroke electromagnet is stuck or the rod is dropped between the armature and the horizontal lever.
- Brake main parts damaged or main spring failure;
- Hydraulic push rod or hydraulic electromagnetic push rod do not move;
- Electrical failure and so on.
