The development process of modern safety helmets (sharing safety helmet knowledge)
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The history of hard hats is long, from natural materials such as coconut shells and armadillo shells in ancient times, to the emergence of metal helmets, and then to metal helmets with bulletproof plates during World War I, all of which are the predecessors of modern hard hats. In the early 20th century, with the development of industrialization, in order to protect the safety of workers, people began to study and design effective head protection products, and hard hats came into being. The inventor of the world's first civilian hard hat was Kafka, who designed a hard hat based on helmets used in ancient wars in 1908 to protect workers from falling objects from high altitudes . The design of modern hard hats is inspired by biological structures in nature, such as the physiological structure of woodpeckers. Scientists have upgraded the design of hard hats based on these natural models, leaving a gap between the top of the hat and the top of the head, and filling it with lightweight elastic materials to increase protection for the head.
In the early days, hard hats were mainly made of metal materials. Although they had certain protective properties, they were heavy and uncomfortable to wear. In the mid-term, plastic hard hats gradually replaced metal hard hats. They have the advantages of light weight and comfortable wearing, and their protective properties have also been significantly improved. The main materials of modern hard hats include fiberglass, high-density polyethylene (HDPE), ABS plastic, and polycarbonate plastic . In terms of performance considerations, hard hats of different materials are usually selected according to different working environments to ensure that their protective capabilities can adapt to specific working conditions.
Modern hard hats have been significantly improved in design and function. They not only pay more attention to the comfort and practicality of users, but also have made breakthroughs in intelligence, such as integrated sensors and communication modules, making hard hats not only protective tools, but also a kind of intelligent equipment. As a new type of personal protective equipment, smart hard hats integrate high-tech elements and provide more protection functions and data services than traditional hard hats. By introducing smart hard hats, the vital signs, location information and safety conditions of the surrounding environment of the workers can be effectively monitored, so as to achieve real-time early warning of potential risks and rapid response in emergency situations. With the continuous advancement of technology, smart hard hats continue to realize more advanced functions, such as data analysis and health monitoring, to provide more comprehensive protection for workers' safety and smart and efficient on-site management. Zhuowei Video Smart Hard Hat's 5G/4G audio and video transmission function, combined with the smart management platform, can realize real-time voice intercom, remotely watch the wearer's current scene, issue instructions in real time, understand the front-line situation anytime and anywhere, and further strengthen supervision. The hard hat has its own storage function, which can export local videos, discuss doubtful and difficult issues, and can also be used for investigation and evidence collection. Functions such as GPS positioning and collision alarm can instantly know the specific location of front-line personnel, provide convenience for subsequent rescue, ensure on-site safety and minimize casualties.
In today's global information interconnected world, real-time and efficient communications enable us to respond quickly to various emergencies. Zhuowei Video has been deeply engaged in the field of smart helmets, and has been diligently exploring real-time data transmission, precise positioning, AI intelligent development, etc., to help the transformation and development of safe smart cities and the data-based refinement and intelligence of various industries.
The correct way to wear a helmet
(1) Before wearing a helmet, you should adjust the tightness so that the helmet cannot move freely on the head but does not cause discomfort.
(2) The helmet consists of two parts: a lining and a shell. The lining must be well connected to the shell. At the same time, the lining and the shell cannot be too close. There should be a certain gap, which is generally 2-4 cm. When an object falls onto the shell of the helmet, the lining can act as a buffer to prevent the cervical spine from being injured.
(3) The chin strap must be fastened tightly to prevent it from falling off when the body falls or is hit a second time.
(4) The hat should be worn straight and the chin strap should be fastened tightly. The size of the hat band should be adjusted according to the wearer's head shape;
(5) Girls should put their hair into the lining of the helmet when wearing it.
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