Mechanical protective shoes are protective shoes worn by employees in production and work to prevent foot injury caused by mechanical hazards
classification
at present, the widely used mechanical protective shoes are mainly divided into three categories: toe protection safety shoes, rubber surface anti smashing safety shoes and stab resistant shoes
toe protection safety shoes are equipped with metal or non-metal inner wrap on the toe cap, which has the function of defending against crushing injury caused by external objects
the rubber surface anti smashing safety boots are used in the environment with water or wet ground, and the metal or non-metal inner wrap is also installed on the toe cap, which has the function of defending against the impact and crush injury of foreign objects on the toes
stab resistant shoes are equipped with an anti puncture pad between the inner sole and the outer sole, which has the function of preventing sharp objects from stabbing the sole
selection
the selection can be divided into three steps: selecting the appropriate type and grade, selecting qualified products and checking the appearance quality
select the appropriate type and grade
1. Toe protection safety shoes
according to the protection performance, toe protection safety shoes can be divided into an1, an2, An3, an4 and an5; According to the production process is mainly divided into adhesive, injection molding, molding, sewing and adhesive seam 5
the current effective standard for toe safety shoes is LD 50-1994 “toe safety shoes (boots)”. 1n the standard, the main technical performances of toe safety shoes include the pressure resistance of the front end of the finished shoes, the impact resistance of the front end of the finished shoes, the folding resistance of the outsoles, the wear resistance of the outsoles and the peeling strength of the finished shoes. The pressure resistance and impact resistance of the front end of the finished shoe belong to the safety protection performance, while the folding resistance, wear resistance and peeling strength of the insole belong to the wearing performance. Toe safety shoes must meet these technical performance requirements specified in the standard
toe safety shoes can be selected from the following two aspects according to needs:
1. Protection performance:
among the five protection performance levels of toe safety shoes, an1 level is the highest and an5 level is the lowest. High level toe protection safety shoes have high pressure resistance and impact resistance technical indicators at the front end, which is good for toe protection. Therefore, the more easily the toe is injured or crushed, and the more serious the injury is, the higher level toe protection safety shoes should be selected. For some operations, the toe may be injured or crushed, and the injury degree is not too serious, You can choose low-level toe safety shoes. 1t should be selected according to the characteristics of the operation. Generally, the operation applicable to each level is shown in Table 1
Table 12. Manufacturing process:
the manufacturing process of toe safety shoes now generally adopts adhesive and injection molding, seam is generally used for tire sole and reverse leather shoes, while molded leather shoes are rare, and seam glued leather shoes are relatively new, similar to the shape of sports shoes, and are gradually increasing. 1njection molding and gluing sewing shoes are new and light, and the outer sole is made of wear-resistant polyurethane material, so the price is relatively expensive; Adhesive leather shoes are traditional in technology. According to their styles and materials, the prices vary; The price of stitched tread shoes is relatively cheap, but it also varies according to the style and materials. 1n addition, injection and adhesive leather shoes have poor air permeability, seam leather shoes have better air permeability and are more comfortable to wear, and seam leather shoes with good quality are also very comfortable. The manufacturing process mainly involves the price, style, material and comfort, and does not involve the safety protection performance. 1t can be selected according to the needs< According to their protective performance, they can be divided into two levels: ordinary type and light type
the standard applicable to rubber faced anti smashing safety shoes is Hg 3081-1999 “rubber faced anti smashing safety shoes”. According to the standard, the main technical performances of the rubber faced anti smashing safety boots include the pressure resistance and impact resistance of the boot, the physical and mechanical properties of the boot and the insole, and the water leakage resistance. The pressure resistance and impact resistance of the boot belong to the safety protection performance, and the physical and mechanical properties and the water leakage resistance of the boot and the insole belong to the wearing performance. The rubber faced anti smashing safety boots must meet these technical performance requirements specified in the standard
the choice of rubber surface anti smashing safety shoes is similar to the choice of protection performance grade of toe protection safety shoes. The ordinary type is of high grade, while the light type is of low grade. The common type should be used for the operation where the toe is easy to be crushed or crushed and the degree of injury is serious, while the light type can be used for the operation where the toe is less likely to be crushed or crushed and the degree of injury is not serious. 1n general, the operations applicable to each level are shown in Table 2< Anti stab shoes are mainly divided into two types: leather shoes and rubber boots, and they are also divided into three grades according to their protection performance: super grade, grade 1 and grade 11
the standards applicable to stab resistant shoes are GB 12017-1989 “technical conditions and test methods for stab resistant shoes”, LD 50-1994 “safety shoes (boots) for toe protection” and Hg 3081-1999 “rubber faced anti smashing safety shoes”. GB 12017-1989 specifies the safety protection properties of stab resistant shoes, such as stab resistance strength, while the relevant provisions of LD 50-1994 and Hg 3081-1999 are applied to the performance of leather shoes and the physical and mechanical properties of rubber boots respectively. Stab resistant shoes must meet the relevant technical performance requirements specified in these standards
stab resistant shoes can be selected from the following two aspects according to the needs:
1. Type
leather shoes are used in places where there is no water on the ground; Rubber boots are used in places with water on the ground. The choice of leather shoes in the production process can refer to toe safety shoes