U36 clamp as a a reliable connection fasteners for the U-channel steel support, U steel lap length is generally not more than 200mm, the manufacturing process is simple, easy installation. To connect U-channel steel support safe and reliable, can improve the roadway life, reduce roadway maintenance rate, reduce security incidents, to ensure safety in coal mines.
1) clamp each part must have good interchangeability, bolts should be installed directly on the card cable board.
2) clamp surface should no cracks, burrs and other defects.
3) clamp surface need to be quenching, the material is not less than the U-shaped bracket Q345 steel mechanical properties of low carbon steel;
4) after forming clamp thickness tolerance of ± 0.5mm, the width tolerance of ± 0.2mm. Bolt hole spacing tolerance of ± 1mm.
5) clamp bolts should be used with the U-shaped steel material corresponding bar production.
6) Bolt specifications for the M24, length 35mm, thread size should be consistent GB/T96 basic requirements, tolerances shall comply with the provisions of GB/T197 accuracy of 8g.
7) clamp bore specifications for the M24 screw hole through holes, screw threads - Basic dimensions shall comply with the provisions of GB/T96, tolerances shall comply with the provisions of GB/T197 accuracy of 8g.
8) 25U steel retractable bracket card cable resistance is not lower than the average working 100kN, 29U steel retractable bracket card cable resistance is not lower than the average working 140kN, 36U steel retractable bracket card cable resistance is not lower average working at 190kN.
9) the maximum and minimum working resistance shall not exceed the difference between the working resistance 25kN.
10) clamp match with U-channel support strength to match.