Classification and selection skills of mechanical protective shoes
Mechanical protective shoes are protective shoes worn by practitioners in the production and work to protect the feet against mechanical hazards.
classification
At present, a wide range of mechanical protective shoes are mainly divided into three categories: protective toe safety shoes, rubber-faced anti-smashing safety boots and anti-piercing shoes.
The protective toe safety shoes are equipped with a metal or non-metal inner toe cap on the toe cap, which has the function of preventing the foreign object from squeezing the toe.
The rubber-faced anti-smashing safety boots are used in environments with water or ground moisture. They are also equipped with metal or non-metal inner toe caps on the toe caps, which have the function of preventing foreign objects from crushing the toes.
The anti-piercing shoe has a puncture-proof pad between the insole and the outsole, which has the function of preventing the sharp object from stabbing the bottom of the foot.
select
In the selection, it can be divided into three steps: selecting the appropriate type and grade, selecting qualified products, and viewing the appearance quality.
Choose the right type and rating
First, protect the toe safety shoes
The protective toe safety shoes are divided into five grades according to the protective performance: An1, An2, An3, An4, An5, etc.; according to the production process, they are mainly divided into five types: adhesive, injection molding, molding, seam and seam.
The current effective standard for protecting toe safety shoes is LD50-1994 "Protection toe safety shoes (boots)". In the standard, the main technical performance of the toe safety shoes is the pressure resistance of the front end of the shoe, the impact resistance of the front end of the shoe, the folding resistance of the outsole, the wear resistance of the outsole and the peeling strength of the shoe. The pressure resistance of the front end of the shoe and the impact resistance of the front end of the shoe are safety protection performance, and the outsole folding performance, the outsole abrasion resistance and the peeling strength of the shoe are the wearing properties. Protective toe safety shoes must meet these technical performance requirements as specified in the standard.
Protective toe safety shoes can be selected from the following two aspects as needed:
1. Protection performance:
The protection level of the toe safety shoes is the highest in the An1 level and the An5 level. The high-level protective toe safety shoes have high pressure and shock resistance at the front end, and the toe protection is good, so the more the toes are easily bruised or crushed, the more serious the injury is. Use high-grade protective toe safety shoes, and for some toes that may be bruised or crushed, and less severely injured, you can choose a low-level protective toe safety shoe. It should be selected according to the characteristics of the operation.
2. Production process:
The manufacturing process of protective toe safety shoes is now mostly glued and injection-molded. The seams are generally used for the bottom of the tires and the anti-fur shoes. The molded shoes are rare. The seam-shoes are relatively new, similar to the shape of sports shoes. . Injection molding, viscous leather shoes are new and light, and the outer sole is made of wear-resistant polyurethane material, which is more expensive; the traditional crafts of adhesive leather shoes, according to the style, materials, etc., the price is different; the price of the sewn tires is relatively cheap. However, depending on the style, materials, etc., the level is different. In addition, the injection molding and adhesive shoes are less breathable, the seam shoes are more breathable, the clothes are more comfortable, and the good quality seam shoes are also very comfortable. The production process mainly involves price, style, materials and comfort. It does not involve safety protection and can be selected as needed.
Second, rubber face anti-mite safety boots
The rubber-faced anti-smashing safety boots are divided into two types according to their protective performance: ordinary type and light type.
The standard for rubber-faced anti-mite safety boots is HG3081-1999 "Glue-faced anti-mite safety boots". The main technical performance of the rubber smash-proof safety boots is the pressure resistance and impact resistance of the boot head, the physical and mechanical properties of the boot and the outsole, and the non-leakage of water immersion. The pressure resistance and impact resistance of the boot are Safety protection performance, physical and mechanical properties of the boot and outsole, and non-leakage of water immersion are wearability. Rubber-faced safety boots must meet these technical performance requirements as specified in the standard.
The choice of rubberized smash-proof safety boots is similar to the choice of protection level for protection of toe safety shoes. The normal type is high and the light level is low. If the toes are easily bruised or crushed, and the injury is serious, the normal type should be used. If the toes are less likely to be bruised or crushed, and the injury is not serious, the light type can be selected.
Third, anti-piercing shoes
Anti-piercing shoes are mainly divided into two types: leather shoes and rubber boots. According to their protective performance, they are divided into three grades: special grade, grade I and grade II.
The standard for anti-piercing shoes is GB12017-1989 "Anti-piercing technical conditions and test methods for anti-piercing shoes", LD50-1994 "Protection toe safety shoes (boots)" and HG3081-1999 "Glue surface anti-mite Safety boots. GB12017-1989 specifies the safety protection performance of puncture-proof shoes, and the performance of the shoes and the physical and mechanical properties of the materials suitable for rubber boots are applied in LD50-1994 and HG3081-1999 respectively. The relevant provisions. Anti-piercing shoes must meet the relevant technical performance requirements specified in these standards.
Anti-piercing shoes can be selected from the following two aspects as needed:
1. Types of
Leather shoes are used in places where there is no water on the ground; rubber boots are used in places where there is water on the ground. The choice of leather shoes in the production process can be referred to the protection of toe safety shoes.
2. Protection performance level
The puncture-proof shoes are the highest in class and the lowest in class II. The choice of anti-piercing footwear protection performance level can be referred to the choice of protecting the toe safety shoes.
Choose a qualified product
Protective toe safety shoes, rubber-faced anti-smash safety boots and anti-piercing shoes are special labor protection articles. The State implements a safety mark management and production license system for special labor protection articles. Therefore, when selecting, first confirm whether the manufacturer of the product has a nationally issued safety mark certificate and production license. On this basis, check whether the product has the manufacturer's name and address, safety mark, production license number, production date, standard number executed by the product, whether it is accompanied by the product certificate and instruction manual, and pay special attention to the shoes. Is there a product name or "protective toe", "anti-mite" or "anti-piercing" words, shoe size and protective performance level, such as "An2", "ordinary" and "special". In addition, when purchasing, the dealer should also be required to present the test report of the batch of products, as well as the safety mark certificate and production license of the manufacturer of the product (the original is provided when the product is sold), and check the expiration date, and at the same time request the distribution. The supplier provides a copy of the three materials.
View appearance quality
Appearance quality is also an aspect of judging the quality of mechanical protective shoes. Generally, you can check whether there is disability in the upper surface, whether the color is uniform, whether there are heavy needles, jump stitches, broken wires, and whether the stitch code is uniform; whether the bottom is open or off; whether the sole and the rubber surface are too sulfury. , sulphur, sulfur spray; whether the inner head is skewed; and so on.
use
1. Protective toe safety shoes should prevent water from drenching the surface to prevent mildew and affect the protective function.
2. Protective toe safety shoes should be worn to avoid contact with acid and alkali corrosive substances. Rubber surface anti-smash safety boots should be worn to avoid contact with sharps, high temperature and oil, acid, alkali or other corrosive substances, anti-piercing shoes. Avoid contact with oil, acid, alkali or other corrosive substances to prevent damage to the shoes (boots) and affect the protective performance.
3. Mechanical protective shoes should be placed in a dry and ventilated warehouse when stored, stacked 20cm above the ground and walls, away from all heating elements 1m, avoid direct sunlight, rain and moisture, and oil, acid or alkali or other corrosion The impact of sexual substances.
4. The storage period of the protective toe safety shoes shall be more than 2 years (calculated from the date of production), and shall be inspected according to the standard.
5. The service life of mechanical protective shoes depends on working conditions, working environment and different types of work. Generally, in the labor protection product allocation standards of various places, the service life of the relevant types of mechanical protective shoes is specified, that is, the issuance period cannot exceed the prescribed period. For any types of work that are not included in the local labor protection product allocation standards, or where there is no local labor protection product allocation standard, the production and business operation unit may follow the national standard GB11651-1989 "Labor Protection Products Selection Rules" and refer to the labor protection equipment standard in other places. The requirements for the development of the unit's standards. Of course, whether mechanical protective shoes can continue to be used depends on whether the degree of damage has affected the protective performance and the most basic wearing performance.