Steel arch support bracket has the advantages of high initial support force, large supporting strength, easy installation and no deformation. Therefore, it is often used to manufacture roadway shrinkable metal brackets, as secondary support for mine roadways, mine roadways, and support branches for tunnels. Protection and other purposes.
The use of steel arch support brackets effectively reduces the occurrence of accidents such as roofing and sheeting, is safe and reliable, and improves the stability of the mine ventilation system. The U-shaped steel shrinkable bracket is used to solve the problem of tunneling support.
steel arch support bracket structure
1. Top beam.
The top beam is arc-shaped, and its number is divided into one section and multiple sections depending on the section size of the roadway, the force of the bracket, and the transportation conditions.
2. Column legs.
There are three types of legs: one is a circular arc at the top and the straight segment at the lower part; the second is all curved and has only one radius of curvature; the third is all curved, but has two curvatures. radius. A base is welded under the column leg, and the size of the base depends on the hardness of the bottom plate;
3. Connector.
The connecting piece is a clamping device between the bracket section and the inter-section, which can be used for the connection between the joints, and can also press the two sections of the connected steel joints to provide a pre-tightening force, so that the U-shaped steel has frictional force, thereby ensuring The arched bracket has a certain working resistance and a certain amount of shrinkage.
4. Racks between shelves.
The role of the inter-rack tie rod is to enhance the overall relative stability of the bracket, and the brackets are coupled from the longitudinal direction to form a whole.
5. Backing material.
The backing material is a filling material between the U-shaped steel bracket and the surrounding rock, and the purpose is to make the U-shaped steel bracket close to the surrounding rock, improve the stress state of the bracket, improve its bearing capacity and maintain the stability of the surrounding rock.
U-shaped steel bracket product features
1. The steel arch support bracket is subjected to large pressure and long support time, and has the characteristics of easy installation and deformation.
2. The steel arch support bracket has shrinkage, stable and reliable bearing capacity compared with other rigid supports, and adapts to the load and deformation of the soft surrounding rock.
3. The steel arch support bracket has high cross-section utilization, convenient support for the support, and small maintenance.
4. The U3 steel bracket has high recycling and recycling rate, reducing the use of pit wood, and the environmental protection benefits are very obvious.
