Moving and supporting the weight of the human body are two important functions of the foot. However, the foot is a part that is more vulnerable to injury and is often overlooked by people. With the increase of people’s awareness of labor protection and self-protection, the protection of feet has gradually been recognized by people.
According to reports, slips and falls are the main cause of work-related accidents. Approximately 17% of disability is caused by this. The total number of accidents is as high as 180,000 per year. At the same time, they are also the second cause of death in the workplace. Accounted for 13%, the total number of accidents reached 1,037 per year. Therefore, sufficient attention should be paid.
Labor insurance shoe manufacturers
Classification of foot injuries
In work, foot injuries can be classified into the following types: Impact, impact-a heavy or sharp object falling on the foot may cause foot injury or puncture. When colliding with a stiff object, the foot Fractures may also occur. Slipping-walking on the floor with oil, water or chemicals may cause imbalance in the human body
The importance of safety shoes
Generally speaking, workers in the following environments are required to wear safety footwear:
In the environment, falling and rolling objects may pierce the sole of the foot, or be exposed to electromagnetism;
To carry some heavy objects that may fall (such as luggage, heavy tools, etc.), safety footwear with impact or impact protection must be worn;
Some sharp objects may be encountered during work, such as nails, screws, sharp metal rings for scraping cymbals, etc.;
There are often heavy objects that are easy to roll on the ground in the work environment (may roll over the feet), and it is required to wear anti-compression shoes;
For the special occupation of electric power workers, special types of conductive or insulating footwear must be used.
main performance of safety shoes
(1) Toe cap impact resistance
Use the steel impact hammer of the specified weight to carry out the impact test. When the toe cap is impacted, the gap height under the toe cap should be less than the specified value, and there should be no penetrating cracks in the toe cap in the direction of the test axis. It is worth noting that the requirements of the weight, specifications, impact height and the structure of the testing machine in the national standards are different, and they should be distinguished during the actual test. (Labor protection shoe manufacturer)
(2) Puncture resistance
The test machine is equipped with a pressure plate, and the pressure plate is equipped with test nails. The test nail is a head with a truncated tip. The hardness of the nail head should be greater than 60HRC. Place the shoe sole sample on the chassis of the testing machine so that the test nail can pierce through the outsole. The test nail pierces the sole at a speed of 10 mm/min ± 3 mm/min until it penetrates. Record the required The greater force. Choose 4 points on each sole for testing (at least one point is on the heel), the distance between each point is not less than 30mm, and the distance from the edge of the insole is greater than 10 mm. The bottom with non-slip blocks should be pierced between the blocks. Two of the four points should be tested within a distance of 10-15 mm from the edge line where the bottom corrugated plant is located. If humidity will affect the results, the shoe sole should be immersed in deionized water at 20℃±2℃ for 16±1h before testing.
(3) Electrical performance of conductive shoes and anti-static shoes
After the shoe sample is adjusted in the dry and wet atmosphere, fill the clean steel ball into the human shoe and place it on the metal probe device. Use the specified resistance test instrument to measure the first two probes and the third probe. Between the resistance. In general, conductive shoes require resistance not greater than 100K ohms; anti-static shoes require resistance between 100K ohms and 100M ohms.