visionaid safety protection products, German visionaid models, visionaid prices

visionaid safety protection products: A safety helmet is a hat that protects the human head from injuries caused by falling objects and other specific factors. The safety helmet consists of a shell, liner, chin strap, and accessories. Cushioning and shock absorption: There is a gap of 25~50mm between the shell and the liner. When an object strikes the safety helmet, the shell does not deform under force to directly affect the top of the head. Stress dispersion: The shell is oval or hemispherical with a smooth surface. When an object falls onto the shell, it cannot stay and slides off immediately; moreover, the force borne by the impact point on the shell is transmitted to the surroundings. The force reduced by the liner cushioning can reach more than 2/23, thus turning the point of force into a surface of force, thereby avoiding stress concentration at a certain point on the shell and reducing the force per unit area. It is mainly used in metallurgy, construction, forestry, electric power, mining, above-ground operations, industry, transportation, and other work types.

visionaid safety protection product structure

The safety helmet consists of three parts: the shell, the liner, and the chin strap. Shell: This is the main component of the safety helmet, generally adopting an oval or hemispherical thin-shell structure. Due to the rigid performance of the material absorbing and dispersing force, combined with a smooth surface and circular curves that easily cause impacting objects to slide away, the impact time is reduced. According to needs and to strengthen the strength of the safety helmet shell, the outer shell can be made in various forms such as smooth top, ribbed top, with brim, and without brim. Liner: The liner is the general term for components inside the shell that directly contact the wearer's head. It consists of a headband ring, top strap, protective strap, support strap, sweat-absorbing band, padding, and retaining cords. The liner material can be made of cotton webbing, synthetic fiber webbing, and plastic webbing. The headband is a ring-shaped strap that closely encircles the human head when worn. The forehead part of the strap is lined with sweat-absorbing material, providing a certain sweat-absorbing effect. Chin strap: A strap fastened under the chin to secure the safety helmet. The chin strap consists of the strap and a locking buckle.

visionaid safety protection product selection

Regarding the color of safety helmets, principles of safety psychology should be followed. Internationally common yellow with black stripes is a warning sign; red indicates restriction or prohibition; blue serves as a display sign, etc. Therefore, for safety helmets used by general workers, white, light yellow, and light green are recommended. For mining safety helmets, bright colors should be used to facilitate detection and alertness, as visual ambiguity can easily lead to safety accidents. In addition to black, miner's helmets come in other colors, and reflective or luminous materials are attached to the safety helmets to attract attention in dim lighting. Some departments use different colored safety helmets to distinguish job roles, such as white helmets with a green cross mark for safety management personnel, and orange-red helmets for maintenance personnel. In forest logging operation sites, red or orange-red safety helmets are conspicuous and easy to spot.

visionaid safety protection product usage standards

The following principles should be observed when using safety helmets: Before wearing, check whether any accessories of the safety helmet are damaged, whether the assembly is secure, whether the liner adjustment part is tight, whether the socket is reliable, and whether the straps are fastened. If the distance between the liner and the shell is not within 25～70mm, adjust the top cord to the specified range. Ensure all components are intact before use. Adjust the length of the headband to a suitable position (moderately tight) according to the user's head size. Safety helmets worn by high-altitude workers must have chin straps and rear neck bands securely fastened to prevent the helmet from slipping off or falling off. After a safety helmet is subjected to a significant impact during use, it should be stopped from use and replaced with a new one, regardless of whether obvious cracks or deformation are found on the shell. Safety helmets should not be stored in places with acids, alkalis, high temperatures, sunlight, or humidity, and should be avoided from being squeezed by heavy objects or punctured by sharp objects. The shell and liner can be washed with cold or warm water, but must not be baked on radiators to prevent shell deformation.

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