Anti-smash labor protection shoes are used to protect workers’ feet during work to reduce or avoid the risk of foot injuries from heavy objects. The head of such labor protection shoes must contain a steel toe. In order to prevent the steel toe from causing foot wear, the steel toe sheath will be isolated.
Anti-smash labor protection shoes are generally used in heavy industries such as mining, mechanical construction, metallurgy, steel, and port lifting.
So what requirements should qualified anti-smash labor protection shoes meet? The editor summarizes the following points.
General technical requirements for anti-smash labor protection shoes:
1. Appearance and structural standards:
Complete anti-smash safety shoes consist of steel inner toe cap, toe insole, leather upper, eyelets, shoelaces, shoe ears, shoe waist, heel protector, moon-shaped heel bag, shoe waist, shoe back pad, It consists of insole, insole, core filling, forefoot sole, etc.
2. Appearance quality standards:
There are no obvious defects such as surface damage, color difference, double seams, jumpers, broken threads, uneven stitching, glue opening, lack of sulfur, sulfur spray, skewed inner packaging head, etc.
3. Outsole thickness standard:
The thickness of the direct injection, vulcanized, glued outsole (excluding tooth thickness) is not less than 4mm; the full layer thickness of shoes made of all rubber and full polymer materials is not less than 6mm, the tooth thickness (pattern) is not less than 3mm, and the tooth thickness of other materials The height is not less than 2.5mm, and the thickness of any part of the outsole without patterns (patterns) is not less than 6mm.
Safety requirements for anti-smash labor protection shoes:
1. Anti-smash labor protection shoes pressure resistance:
Cut off the toe 30mm from the inner toe cap and the upper sole. Place it on the platform of the pressure testing machine with an indication error of 1%. Place a plasticine tube with a height of (20±2) mm (less than 250 shoes) and a diameter of (25±2) mm (above 250 shoes) into the toe cap. Then apply the required force at a speed of (5±2) mm/min. After removing the force, take out the compressed plastic soil and measure the height with a dial indicator. The measured value at the low position is the measured value. Its value should comply with regulations.
2. Impact resistance of anti-smash labor protection shoes:
Place the toe and the cylindrical plastic mud with inner packaging under the impact machine, fix the inspected toe, lift the impact hammer (20kg) to the required height, and then impact the toe freely. Take out the plasticine and measure it with a dial indicator. The value should comply with the regulations.
3. Pressure resistance and impact resistance requirements of the inner head:
The test method is the same as the toe test method. After the test, the deformation spacing of the inner head should meet the corresponding requirements.
4. Corrosion resistance requirements of the inner head:
Sweat and moisture on the feet will corrode the inside of the toe cap and affect the quality of the shoes. Therefore, the inner head should be corrosion-resistant. It is required to use two pieces of white filter paper (100m wide and 150mm long), with one end immersed in 1% NaCl solution and the other end placed above and below the inner head. After 48 hours, remove the filter paper, check the corrosion marks on the header caused by the NaCl solution, and measure the area of each point. It is required that the corrosion points should not exceed 5 points, and each point should not be larger than 2.5mm.
