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外文文献 Multi-rope friction hoist rope for new technology Multi-rope friction hoist wire rope replacement, it is usually the use of four fixed steady string of new cars of old rope, process complexity, construction personnel and VI in the well shaft operations, the risk of larger and longer mine production, So how to replace the main wire rope hoist such more security, time-saving, has been the goal of research 1、 Construction of preparation (1) in advance of the wedge-shaped hanging backup detection device on the new wire rope testing, in line with the Coal Mine Safety Regulations section of the relevant provisions of 402, the measurement of size, were cut into four entangled in rope roller 4 on, according to the requirements of twist put on the north side of the derrick, and fixed. (2) North derrick hook in the appropriate location of the fixed beam-oriented round of four in order to smooth movement of wire rope. (3) Automatic adjustment of leveling out the volume of the fuel tank of a lever, the first self-balancing so that the fuel tank of the South Hook extended the amount of leverage in line with the closure of the South Hook Balancing tanks at their respective cut-off valve, run 1 day, then the volume of check the fuel tank between the two hook lever out of the volume, and record, and as the basis for cut-off rope. (4)ready to use long and short board, long board needs three, the need for a short eight boards. (5) ready to adequate and reliable lighting facilities, as well as the signal, wire, wood, and commonly used tools such as I-steel, and check their eligibility. 2、 Construction of steps (1) top-down clean-up platforms, derrick and the shaft, removal of roller shield. VI well above the old string with new string, specific methods are as follows: ① Cans will be parked in the south tank top level VI and the location of wells; ② VI in wells adjacent to the north can take the work platform, the new rope through the window well wall T
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