Some customers of rotary excavators use inappropriate steel wire ropes, which are often scrapped in advance when they are two or three hundred meters or three or five hundred meters. Therefore, the selection of steel wire ropes for rotary excavators is very important. It is not a problem that a high-quality steel wire rope has a cumulative drilling depth of more than 2000 meters, and some are even deeper (depending on a variety of factors of rock and soil). At present, China's rotary drilling rig manufacturers mainly include XCMG, Sany, Zoomlion, Jintai and other units. Many steel wire ropes of rotary drilling rig have chosen domestic independent brands. Because domestic steel wire rope has high cost performance, it has gradually replaced imported steel wire rope as a necessary condition for construction.
The wire rope of rotary drilling rig does not require high tensile strength, but it must have good bending performance, fatigue resistance and wear resistance (this requires a large number of steel wires to be assembled, and the steel wires to be assembled should be thin); at the same time, due to the limitation of working conditions, it often has to bear high temperature (this requires that the wire rope core is metal core, because the steel core rope can withstand high temperature) It can bear the impact and anti rotation performance (this can choose multi strand non rotation wire rope)! Therefore, in order to meet the above conditions, we have been recommending 35W * K7 as the first choice of wire rope for rotary drilling rig a few years ago. The wire rope specifications of 35W * K7 rotary drilling rig are 26mm / 28mm / 30mm / 32mm / 36mm / 42mm, and our company has been supplying them from stock.
It is necessary to remind the construction units and individuals of major rotary drilling rigs that when replacing the wire rope of rotary drilling rigs, the condition of the drum must be checked, because the rope groove at the edge of the drum will form sharp sharp corners due to the long-term wear of the wire rope, which will cut the wire and even the strand of the new rope. When the drum is seriously worn, the drum must be replaced. When the edge of the rope groove is sharp, the sharp angle must be polished. The construction workers must pay close attention to the stress state of the wire rope, and pay enough attention to the fuzz and broken strand of any part.
|
