Roadway retractable guard support price roadway retractable protective bracket shelf roadway retractable guard support customized retractable protective bracket roadway roadway parameters retractable protective bracket introduces roadway retractable protective frame composition roadway retractable protective bracket Features a roadway retractable protective bracket Products roadway retractable protective bracket has a high initial support force, a large supporting strength, easy to install, easy to deformation, etc., so commonly used in the manufacture of the roadway retractable metal stents, as mine tunnel mine tunnel secondary support, and tunnel through a mountain of Brace and other purposes. Use U-shaped roadway retractable roof fall protection stent effectively reduce the incidence, spalling and other accidents, safety and reliability, improve mine ventilation system stability. Selection of U-shaped steel retractable stand, a better solution to the problem of tunneling support. Second, the roadway retractable protective stent composed 1. top beam. Arc arched roof beams, the number depending on the size of the roadway, stand by force, different transport conditions and has a multi-section of the points. 2. column legs. There are three kinds of column legs forms, one is an upper arc-shaped, the lower part of straight line segments; second is all curved, and only one radius of curvature; third is all curved, but there are two of curvature radius. Column welded leg below the floor depending on the size of hard and soft base, the base may be; 3. connections. Connector is a clamping device between the bracket Festival and the Festival can play a role in connecting section between two sections can also be connected to the joint portion pressed steel, providing preload, having friction between the U-shaped steel, thus ensuring arch support with a certain amount of work and a certain resistance to shrinkage. The frame between lever. The role of inter-frame drawbar is to enhance the overall relative stability of the stent, the stent from the longitudinal join together to form a whole. 5. backing material. Backing material is filled with material roadway retractable protective bracket and wall rock between the aim is to make the roadway retractable stand guard in close contact with the surrounding rock, to improve the situation by force stand to improve its carrying capacity and maintain the surrounding rock stability. Third, the roadway retractable guard support Features 1, roadway retractable guard support to withstand pressure, supporting a long time, are easy to install easy deformation characteristics. 2, roadway retractable protective bracket with a scalable and reliable carrying capacity than other rigid support  adapt soft rock loads and deformation. 3, roadway cross-section retractable protective bracket scaffold branches back to high utilization   small amount of maintenance convenience. 4, roadway retractable guard support recycling reuse rate, reduce prop use, environmental benefits are significant because our guard support production batches, depending on the model. For inquiries, you can contact me, I will give you detailed answers! Shandong Coal Mine Group Address: No. 69, Zone Torch Road, Jining City, Shandong Province