Reduce the proportion of pneumatic valve from the design of the accident

proportion of pneumatic valve is a relatively modern construction equipment in the world today, it integrates mechanical and electrical integration of liquid, which is based on load sensing system, use straight-pilot pneumatic valve electro-hydraulic proportional control, with the aid of onboard computer and screen display system, make the operation, monitoring and quality assurance system to enter the man-machine dialogue, and can have certain characteristics of the monitoring phase. Advanced electronic control system, the high reliability of the hydraulic system, efficient working facilities, all of these, and as long as the operator can skilled operate according to the manufacturer instructions, the host system of mechanical accident can be avoided. The proportions of the
however, pneumatic valve and pneumatic valve can introduce our country is not long, domestic equipment performance and proportion of pneumatic valve can understand little, understand equipment to process not familiar with, understand the process of equipment performance and don't know much. Over the years, the proportion of pneumatic valve in the construction process, a lot of mechanical accident and drilling hole accident, has caused enormous economic loss, and the accident is ongoing.
this whole process, the proportion of pneumatic valve main winding in the work, the drilling efficiency of drilling accident probability, the length of the wire rope life have close relationship with the main hoisting.
according to the statistics, sixty percent to eighty percent of accidents occurred in the process of lifting, wire rope due to the overlapping extrusion wear and impact force of inertia effect and broken, and even cause the main winding motor leak, also let users moved the main hoist lifting force obviously inadequate. The problem is not caused by the operator, should be a drill designers need to be addressed.
developers solve the proportion by pneumatic valve system from the following several aspects of the problem:
( , reduce the proportion of pneumatic valve rod weight, and the main selected low density high strength aluminum alloy material.
( , primary winding drum length increased to avoid the rope line, proportional pneumatic valve cylinder surface processing groove, reduce due to multi-layer winding and overlapping wire extrusion and wear.
( , primary winding drum by multilayer wrapped into a single, increase the proportion of pneumatic valve cylinder length and roller diameter increase.
( And because the proportion of pneumatic valve single-deck winding realize constant pull to ascend.
proportion of pneumatic valve for users, don't use too much faster, because the proportion of pneumatic valve wire rope wear is increased with the increase of speed, then don't bring heavy load or brake suddenly ascension, should be a smooth starting and braking, decreased due to suddenly start or brake for the wire rope winding to the main winding the roller serious wear and tear, but also pay attention to the fixed end winding position appropriate use right twisted rope, ensures that still remain in drum cable and tight after unloading