What are the two main points of wearing a hard hat correctly

Check the hard hat

Before wearing, check whether the accessories of the helmet are damaged, whether the assembly is firm, whether the adjustment part of the cap lining is tightened, whether the socket is firm, whether the rope strap is tight, etc., if the distance between the hat lining and the cap shell is not between 25-50mm, the top rope should be adjusted to the specified range. Make sure that all parts are in good condition before use.

2. Adjust the hat band

According to the size of the user's head, adjust the length of the hat hoop to a suitable position (moderate tightness), and the safety helmet worn by high-altitude workers should have a chin strap and a back neck band and should be fastened to prevent the hat from slipping off and taking off.

Helmet expiration date and shelf:

After the helmet is subjected to a large impact during use, regardless of whether the shell is found to have obvious fracture marks or deformation, it should be stopped and the damaged helmet should be replaced. Generally, the service life of the helmet is not more than 3 years.

The helmet should not be stored in a place with acid and alkali, high temperature (above 50), sunlight, humidity, etc., to avoid being squeezed by heavy objects or punctured by sharp objects.

The shell and lining can be washed with cold or lukewarm water (less than 50 °C) and should not be placed on the radiator.

Bake on top to prevent the shell from deforming.

Protection mechanism

1. Cushioning and shock absorption: there is a gap of 25 50mm between the cap shell and the cap lining, and when the object hits the helmet, the cap shell will not directly affect the top of the head due to force deformation.

2. Dispersion of stress: the cap shell is oval or hemispherical, the surface is smooth, when the object falls on the cap, the object can not stay and slide off immediately; Furthermore, the force to bear at the point where the cap shell received a blow transmits to the circumference. The force reduced by the cushioning of the cap lining can reach more than 2 3, so that the point of force becomes the force surface, so that the impact force is avoided.

At a certain point on the shell, the stress is concentrated.

The force per unit area is reduced.

3. Biomechanics: The standard stipulates that the helmet must be able to absorb 4900N, because of the biological test, the maximum limit of the human cervical spine when stressed, and the cervical spine will be injured if it exceeds this limit, causing paralysis in the light case and endangering life in the heavy case.

1. First of all, you should choose a safety helmet that is suitable for your head shape, before wearing a safety helmet, you should carefully check the certificate, instructions for use, and use period, and adjust the size of the hat lining, and the space between the top and the inner top of the cap shell must be kept 20-50 mm. With this space, an energy absorption system can be formed, so that the impact force suffered is distributed over the entire area of the skull, mitigating the damage to the head.

2Secondly, the helmet cannot be disassembled or added with accessories at will, so as not to affect its original protective performance. Wear it squarely, firmly and firmly, not shake, and adjust the back hoop to prevent the helmet from falling off.

1. There should be a certain gap between the helmet lining and the shell.

2. The chin strap must be fastened.

2. Pay attention to the following 5 points when wearing a safety helmet:

1. Wear a safety helmet correctly. Don't wear your helmet crookedly or with the brim behind your head.

2. Check before use. The helmet will gradually deteriorate during use, so it should be checked regularly, and if any abnormal phenomena are found, they should be replaced immediately, and they should not be used continuously. Any hard hat that has been hit hard and cracked should be scrapped.

3. It is strictly forbidden to use a safety helmet with only the chin strap connected to the shell, and it is strictly forbidden to use the helmet without a buffer layer in the cap.

4. "People are in the hat" at the construction site. During on-site operations, construction personnel shall not take off the safety helmet, put it aside, or use it as a cushion. When working indoors with electricity, it is necessary to wear a safety helmet carefully.

5. Pay attention to daily maintenance. Most of the helmets are made of high-density and low-pressure polyethylene plastic, which has the properties of hardening and decaying, and should not be exposed to the sun for a long time.

Precautions for the use of hard hats:

1. There should be a lower forehead strap and a back hat hoop, and tie it firmly to prevent the helmet from slipping or touching off.

2. The thermoplastic helmet can be rinsed with clean water, not soaked in hot water, and cannot be baked on the heating or stove to prevent the helmet from deforming.

3. Before wearing the safety helmet, check whether the accessories are damaged, whether the assembly is firm, whether the adjusting part of the hat lining is tightened, whether the rope strap is tightened, etc., and confirm that the parts are in good condition before use.

4. When the safety helmet is used beyond the specified limit, or has been subjected to heavy impact, it should be replaced in time.

1. The tightness of the helmet should be adjusted before wearing, so that the hat cannot move freely on the head and does not feel uncomfortable.

2. The helmet must be well connected with the shell by the cap lining, and there should be a certain gap, which is generally 2 4cm.

3. The chin strap must be fastened, so that it will not fall off when the human body falls or is hit twice. Since the helmet is worn on the head, it can play a protective role on the head.

4. The hat strap should be worn tightly, and the size of the hat band should be adjusted according to the wearer's head shape; Girls wearing hard hats should wear their hair into the hat lining.

Precautions for buying a hard hat

Each type of helmet has certain technical performance indicators and scope of application, so when purchasing, you must first understand the risk factor indicators of the environment you are using.

Generally, light or eye-catching colors are appropriate, such as white, light yellow, etc., and there are also some enterprises or industries that default to a standard of requirements, such as leaders wearing burgundy helmets, on-site technicians wearing red helmets, safety supervisors wearing white helmets, and so on.

A helmet is a kind of safety equipment to protect the head, and its function is to protect the head from external forces. The correct way to wear a helmet is as follows:

First of all, choose the right size hard hat. It is very important that the helmet size fits the size of the head, because if the helmet is too small or too large, it will not be able to protect the head effectively. Therefore, when buying a hard hat, you should choose the right size and try on different models and brands of hard hats as much as possible in order to determine the most comfortable and effective hard hat.

Second, wear the helmet in the correct position. The helmet should be worn on the front of the head, with the depth of the posture level with the eyebrows, in order to effectively protect the top and sides of the head. If the helmet is worn too low, it will block the vision and affect the vision; If you wear it too high, it will lose its effect on protecting your head.

Third, adjust the helmet to a compact and suitable state. The helmet should fit snugly against the head and not be too loose or too tight so as not to affect the flexibility and comfort of the head. In addition, the placket and chin strap of the helmet should be adjusted according to the actual situation to ensure that the helmet is stable and secure.

Fourth, hard hats should be checked and replaced frequently. During the use of the helmet old bridge, it may be impacted, damaged or aged, in these cases, it is not possible to effectively protect the head, which will pose a threat to the safety of the user. Therefore, the helmet should be regularly inspected for damage or age, and replaced.

In conclusion, wearing a helmet correctly is a very important safety measure that protects the worker's head from external injuries. Wearing a helmet correctly requires choosing the right size, wearing it in the right place, adjusting it to the right condition, and checking and changing it regularly. Only by wearing a safety helmet correctly can the safety of workers be effectively protected.