The underground mining electric locomotive established distance does not meet the required requirements: it is mainly caused by poor braking devices or traction overload.
① The electric locomotive wear of the screw, nut, pin and 孑 L of the braking system is exceeded;
② The crane and connecting rod are skewed, and the brake shoes are in poor contact at work;
③ The electric locomotive load is not pulled according to the regulations, and the overload is serious;
④ The electric locomotive brake shoe wear limit has not been replaced in time. When the brake is released, the gap between the brake shoe and the wheel tread is greater than 5 mm.
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