Moving and supporting the weight of the human body are two important functions of the foot. However, the foot is the part that is most vulnerable and often overlooked. As people's awareness of labor protection and self-protection has increased, the protection of their feet has gradually become recognized.
Slips and falls are reported to be the main cause of work-related injuries in the UK, with approximately 17% of disability being caused by the total number of accidents, up to 180,000 cases per year, and the second factor contributing to death at the workplace. 13%, therefore, should be given enough attention
At work, the damage of the foot can be summarized into the following types:
Impact, impact - A heavy or sharp object falling on your foot can cause injury or puncture of the foot. When colliding with a stiff object, the foot may also fracture.
Slip - may cause an imbalance in the body when walking on the floor with oil, water or chemicals.
The importance of safety shoes
In general, workers in the following environments are required to wear safety footwear:
1. The environment may be stuck in the bottom of the foot due to falling and rolling objects, or in electromagnetic exposure;
2, carrying some heavy objects that may fall (such as luggage, heavy tools, etc.) must wear safety shoes with impact or impact protection;
3, may encounter some sharp objects in the work, such as nails, screws, metal sharp rings for scraping, etc.;
4, the work environment in the ground often has some easy to roll heavy objects (may roll over the foot), it is required to wear anti-compression shoes;
5. For the special profession of electric workers, special types of conductive or insulated shoes must be used.
Safety shoes main performance
Baotou impact resistance
The impact test shall be carried out with a steel impact hammer of a specified weight. The height of the gap under the toe cap shall be less than the specified value when the toe cap is subjected to impact, and the piercing shall not show any penetrating cracks in the direction of the test axis. It is worth noting that the national standards have different regulations on the weight, specifications, impact height and construction of the test machine. The actual test should be distinguished.
Puncture resistance
The test machine is equipped with a pressure plate on which the test nail is mounted. The test nail is a tip with a pointed tip, and the hardness of the nail head should be greater than 60HRC. The sole sample is placed on the chassis of the testing machine in such a position that the test nail can be pierced through the outsole, and the test nail pierces the sole at a speed of 10 mm/min ± 3 mm/min until the penetration is completed, and the maximum required for recording is recorded. force. Four points are selected on each sole for testing (at least one of which is at the heel), each point is not less than 30 mm apart, and the distance from the inner bottom edge is greater than 10 mm. The bottom of the anti-slip block should be pierced between the blocks. Two of the four points should be tested within 10-15 mm of the edge line of the bottom of the plant. If humidity affects the results, the sole should be immersed in deionized water at 20 °C ± 2 °C for 16 ± 1 h before testing.
Electrical properties of conductive shoes and anti-static shoes
After the shoe sample is adjusted in a dry and wet atmosphere, the clean steel ball is filled into the human shoe and placed on the metal probe device, and the first two probes and the third probe are measured using a prescribed resistance tester. Resistance between. Under normal circumstances, conductive shoes require resistance should not be greater than l00K ohms; anti-static shoes require resistance should be between 100K ohms and 100M ohms.
Labor insurance shoes use specification
Oil-repellent protective shoes are used in places where oil or oil splashes;
Waterproof protective shoes are used in workplaces where water or splashing water is used;
Cold-proof protective shoes are used for foot protection of low-temperature workers to protect against frostbite.
Anti-piercing protective shoes are used for foot protection to prevent stab wounds from various sharp objects.
The main function of the anti-smashing shoes is to prevent the falling objects from hurting the feet. The front head of the labor insurance shoes has impact resistant materials.
The main function of steel-making labor insurance shoes is to prevent burning and puncturing. It should be able to withstand certain static pressure and resist certain temperature and be non-flammable. These types of labor insurance shoes are suitable for smelting, furnace, cast iron and so on.
In addition to the above, there are some special labor insurance shoe covers, such as canvas, asbestos, and aluminum film labor insurance shoe covers.