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| The W strip through new die suppress corrective deformation |
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UpdateTime：[2012/9/1 10:40:27] Hits：[2584] From：TONRY MINING SAFETY SUPPORT TECHNOLOGY CO.,LTD
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w steel strip is a new mine and tunnel overhead guard, nurses help materials. Ground pressure, prone to deformation, W - beam before underground recycling manual hammering on well tissue repair, both time-consuming and laborious. To reduce repair costs Shandong TongRui, mining technology decision recycled steel strip directly track repair station in the underground -350 repairs.
The company has developed a new set of presses special mold in order to guarantee the quality of the W strip repair, deformable w strip mold pressing on the press by correcting distortion, so as to achieve the re-use requirements. w steel strip repair mold the structure of the upper and lower mold and raised corresponding groove at the bottom of the 50-mm thick steel plate welded I-beam, in order to ensure the mold strength, dig two W steel strip fixed in the press table mold lower die and upper die by a 20 mm steel plate welded I-beam reinforcement through with overcast wire splint presses telescopic rod fixed on the I-beam. Special mold composed of the upper and lower bodies. Ex dehumidifier is extremely effective in saving tooling costs.
W steel strip reinforced pipe has excellent insulation properties, the thermal conductivity of steel pipe 46.06W / m K, and for the substrate of high-density polyethylene thermal conductivity of 0.48W / m 2 K, only 1% of the steel pipe coefficient, significant savings in construction costs. Anchor dedicated rebar manufacturing, through a special process, take full advantage of the the anchor rod mechanical properties, strength and lever body and tail of the rod thread strength, fast installation torque nut and spherical tray equipped with high-intensity, there is no mechanical weak surface W - beam with high bearing strength anchoring reliable, good elongation for quick installation and construction is a new type of mine support and tunnel support material, the product can be used with a variety of bolt organizations combinations anchor bracket, it can root anchor scattered join together to form a whole load-bearing structures, significantly improve the overall effect of the bolt, the incomplete roof strata, to deal with unstable surrounding rock is best.
W steel strip is strictly prohibited stirring after the first propulsion; must meet the anchoring agent "waiting time" before tightening the nut, the preload should meet the design requirements; quick installation, the the damping device affect on the top of the bolt installation sleeve tighten the nut, it should be promptly cleaned up; anchor not straightness should be checked before installation, not a straight line through the large will cause the bolt installation difficult or even not installed on; the anchoring section shall not be stained with oil and rust, otherwise it will cause the bolt anchoring force decline or failure of left-handed and right-handed bolt contemporary coal mine roadway support the most basic part of which, he bound the roadway surrounding rock surrounding rock itself supporting itself. |
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