Sheep shearing safety helmet cotton safety helmet price=warm safety helmet manufacturer

Sheep shearing safety helmet cotton safety helmet price=warm safety helmet manufacturer

Sheep shearing safety helmet cotton safety helmet price=warm safety helmet manufacturer

Sheep shearing safety helmet cotton safety helmet price=warm safety helmet manufacturer

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1 Cold proof safety helmet
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Cold proof safety helmet is also called cotton safety helmet and dual purpose safety helmet. Cold proof safety helmet is a protective device to prevent head injury caused by impact objects. It is composed of leather or leather cap surface, inner shell, insulation layer and lining. There is a certain space between the cap shell and the cap lining to cushion and disperse the instantaneous impact force, so as to avoid or reduce the direct injury to the head. Impact absorption performance, puncture resistance, lateral rigidity, electrical insulation and flame retardancy are the basic technical performance requirements for cold hardhats. It can be worn during construction in a colder environment, which can prevent wind from freezing, keep warm, resist corrosion and aging, and has good shock resistance and penetration resistance. Cold proof safety helmet: suitable for field and open-air operators in winter in cold regions of China, such as mine mining, geological drilling, forestry logging, building construction and port handling.
2 Introduction to cold hardhat:
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Cold proof safety helmet is also called cotton safety helmet and dual purpose safety helmet. Cold proof safety helmet is a protective device to prevent head injury caused by impact objects. It is composed of leather or leather cap surface, inner shell, insulation layer and lining. There is a certain space between the cap shell and the cap lining to cushion and disperse the instantaneous impact force, so as to avoid or reduce the direct injury to the head. Impact absorption performance, puncture resistance, lateral rigidity, electrical insulation and flame retardancy are the basic technical performance requirements for cold hardhats. It can be worn during construction in a colder environment, which can prevent wind from freezing, keep warm, resist corrosion and aging, and has good shock resistance and penetration resistance. Cold proof safety helmet: suitable for field and open-air operators in winter in cold regions of China, such as mine mining, geological drilling, forestry logging, building construction and port handling.
Classification and characteristics of cold hardhats:
Structural classification of cold hardhat:
(1) , External Glass Steel ABS Cold proof safety helmet: it is composed of leather cap surface, inner shell, insulation layer and lining. The shell is made of glass fiber reinforced plastic material, and the outer layer is composed of leather or leather cap surface, red wool or sheep shearing wool.
(2) . Built in FRP, ABS cold proof safety helmet: it is composed of leather or leather cap surface, inner shell, insulation layer and lining. The inner shell is made of glass fiber reinforced plastic, and there are six equidistant holes at the bottom of the inner shell rivet It passes through the hole on the inner shell and is fixed with the insulation layer and lining as a whole.
Material classification of cold hardhat: (1) red velvet cold hardhat (2) sheep shearing cold hardhat
The cold hardhat can withstand pressure mainly based on three principles:
1. Cushioning and shock absorption: there is a gap of 25~50mm between the cap shell and the cap lining. When an object strikes the cold proof helmet, the cap shell will not directly affect the head due to force deformation. 　
2. Dispersion of stress: the cap shell is elliptical or hemispherical, and the surface is smooth. When an object falls on the cap shell, the object cannot stay and fall immediately; In addition, the force borne by the hit point of the cap shell is transmitted to the surrounding area. The force reduced through the cap lining buffer can reach more than 2/3, and the rest of the force is transmitted to the human skull through the entire area of the cap lining, thus turning the force point into the force surface, thus avoiding the stress concentration of the impact force at a point on the cap shell, and reducing the force on the unit area. 　
3. Biomechanics: According to the national standard, the cold proof helmet must be able to absorb 4900N. This is because in the biological test, the human cervical vertebra is subject to a large limit value when it is stressed. If the limit value is exceeded, the cervical vertebra will be injured, causing paralysis in the light and endangering life in the heavy.
Precautions during use
1. Before use, check whether there are cracks, bruises, unevenness and wear on the appearance of the cold helmet, whether the hat lining is complete, and whether the structure of the hat lining is in normal condition. If there are obvious defects on the cold helmet that affect its performance, scrap it in time to avoid affecting the protective effect. 　
2. The user shall not remove or add accessories to the cold helmet at will, so as not to affect its original protective performance.
3. The user cannot adjust the size of the cap liner at will, which will directly affect the protective performance of the cold helmet. Once the impact of falling objects occurs, the cold helmet will come off because it is not securely worn or directly hurt the wearer because it touches the top after the impact. 　
4. When using, the wearer must wear the cold helmet correctly and firmly without shaking, fasten the chin strap, and adjust the back hoop to prevent the cold helmet from falling off. 　
5. Do not punch holes in the cold helmet without permission, do not collide the cold helmet at will, and do not use the cold helmet as a bench to avoid affecting its strength. 　
6. The cold proof safety helmet that has undergone one impact or test shall be invalid and cannot be used again. 　
7. The cold proof safety helmet shall not be stored in the environment polluted by acid, alkali or chemical reagent, and shall not be placed in high temperature, sunshine or damp places to avoid aging and deterioration. 　
8. Attention should be paid to the use of cold proof helmets within the validity period. The validity period of cold proof helmets woven from plant branches is 2 years, the validity period of plastic cold proof helmets is 2 and a half years, and the validity period of glass fiber reinforced plastics (including vinylon steel) and plastic cold proof helmets is 3 and a half years. The cold proof helmets beyond the validity period should be scrapped.
Safety helmet is very important for head protection. Why not despise it? 　
Safety helmets can protect human heads from external force injuries, but there are still some workers and even managers who ignore the protective function and correct use of safety helmets. For example, some contractors, in order to make more profits, purchase fake and inferior safety helmets for workers without conscience. Those fake and inferior safety helmets are often vulnerable to the impact of falling from high places and hitting objects. Some construction workers lack training in the correct use of safety helmets, especially in the maintenance and regular replacement of safety helmets. For example, some workers mess on safety helmets for ventilation drill hole , we do not know the serious consequences of reducing the impact strength of the helmet. Some workers wear old helmets that have not been replaced for many years. As we all know, outdoor operation on construction sites has a great impact on plastic helmets because of strong light and hot and humid temperature. Those very old plastic safety helmets that have a service life of more than two and a half years greatly reduce the strength of impact resistance, and are often vulnerable to the impact of falling from high places and object strikes