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 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 accidents. About 17% of disability is caused by the total number of accidents, which is as high as 180,000 cases per year. At the same time, it is the second factor causing death at the workplace. 13%, the total number of accidents reached 1,037 cases per year. Therefore, it should be given enough attention.
Classification of foot injuries
At work, the damage of the foot can be summarized into the following types: Impact, impact - a heavy or sharp object falling on the foot may cause injury or puncture of the foot, when colliding with a stiff object, the foot A fracture may also occur. Slip - may cause 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:
The environment may be stuck in the sole of the foot due to falling and rolling objects, or in electromagnetic exposure;
Handling some heavy objects that may fall (such as luggage, heavy tools, etc.) must be worn with safety footwear with impact or impact protection;
Some sharp objects such as nails, screws, metal sharp rings for scraping, etc. may be encountered during work;
On the ground in the work environment, there are often some heavy objects that are easy to roll (may roll over the foot), and it is required to wear anti-compression shoes;
For the special profession of electricians, special types of conductive or insulated footwear must be used.
Safety shoes main performance
(1) 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 impacted, 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. (Labor shoes manufacturer)
(2) 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 cut-off 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. Great 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.
(3) 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.