How to wear a safety helmet correctly?
The lower jaw must be secured and will not fall off when the body falls or strikes two times. Since the helmet is worn on the head, it acts as a protective effect on the head.
Note the use of helmets: (1) to have a chin strap and cap hoop and tied firmly to prevent slipping and knocked off the hat; (2) thermoplastic safety cap can be washed with water, not hot water soaking, not baked in the radiator, the stove, to prevent the cap body deformation; (3) the use of helmets exceeds the specified limit, or a serious impact, although invisible crack, it should be replaced. General plastic safety helmet use for a period of three years; (3) wear a safety helmet before, should check the parts are damaged, the assembly is firm, whether the locking cap lining adjustment part, whether the rope fastened, sure all parts intact before use.
Before the helmet is worn, the size of the elastic should be adjusted so that the cap can not move freely in the head.
Safety helmet consists of a helmet lining, the shell is composed of two parts, a cap lining must be well connected with the shell, and a cap lining and the hat shell can not close, should have a certain gap, the gap is generally 2-4cm (as the material), when there are objects falling into the safety helmet shell, a cap lining can play a buffer role, not to hurt the cervical vertebra.
