Steel arch support has the advantages of high initial support, high support strength, easy installation, and non-deformation. Therefore, it is often used to manufacture roadway shrinkable metal supports for mine roadways, secondary support for mine roadways, and support for mountain tunnels. Protection and other purposes.
Although the steel arch support is an important support for the mine, the structure of the steel arch support is very simple. The composition of the steel arch support includes: 1. Top beam. The top beam is a circular arch, and its number is divided into 1 section and multiple sections depending on the size of the roadway section, the support force, and the transportation conditions. 2. Column legs. There are 3 types of column legs, one is the upper part is a circular arc, the lower part is a straight section; the second is all curved, and there is only one radius of curvature; the third is all curved, but there are two curvatures radius. There is a base welded under the column legs, and the size of the base depends on the hardness of the base plate; 3. Connecting parts. The connecting piece is a clamping device between the bracket section and the section, which can play the role of connecting between the sections. It can also partially compress the two section steel joints connected to provide pre-tightening force, so that there is friction between the U-shaped steel, thereby ensuring The arched support has a certain working resistance and a certain amount of shrinkage. 4. Pull rod between racks. The function of the tie rod between the racks is to enhance the relative stability of the whole bracket, and to connect the brackets longitudinally to form a whole. 5. Backing material. The backing material is the filling material between the U-shaped steel bracket and the surrounding rock. The purpose is to make the U-shaped steel bracket come into close contact with the surrounding rock, improve the stress condition of the bracket, and increase its bearing capacity for a long time. It is easy to install and not easy to deform.
The use of steel arch support effectively reduces the occurrence of roof fall, slabs and other accidents, is safe and reliable, and improves the stability of the mine ventilation system. The selection of steel arch brackets better solves the problem of tunneling and support. The steel arch support produced by China Coal Group pursues quality first, and always puts the safety of miners first. Welcome new and old customers to come and buy.
