manufacturing quality is difficult to guarantee: high-frequency impact of hydraulic rock drill is achieved through the internal oil distribution valve to change into the oil before and after the impact of the water well truck piston chamber, found from the boring machine on-site commissioning and maintenance, oil distribution valve spool and rear cylinder between the mating surface of the seal is critical to ensure the realization of this action directly affects the performance of the drilling machine. Now with the mating surface between the valve spool and rear cylinder sealing gap seals, sealing effect depends entirely on the accuracy of processing, the length of this mating surface is relatively short, due to the sealing effect is not ideal, and with could easily lead to frequent reciprocating motion of the valve spool This with the wear on the surface and reduce the sealing effect, thus affecting the performance of normal play rock drill. 2) boring machine assembly and maintenance difficulties: rock drill machine connection rely on three long screw, the structure can compact structure, but due to the tightening torque required for each long screw to the assembly and maintenance cause big inconvenience, assembly is difficult to ensure that the front cylinder, rear cylinder coaxial with the oil cylinder, could easily lead to shock piston dead. The basis of the use and maintenance, the rock drill assembly is good or bad (three screw tightening torque size is appropriate) directly affect the normal work of the drilling machine, which is the lower the reliability of one of the important factors of rock drill.Zhengzhou Dayu Machinery Co., Ltd. is a leading mining machinery supplier in China, Business scope:All Pneumatic Mining Crawler Drilling Rigs,Hydraulic Mining Crawler Mining Drilling Rigs,Integrated Mining Crawler Drilling Rigs,Down Hole Mining Drilling Machine, Crawler Water Well Drilling Rigs,Truck Mounted Water Well Drilling Rigs so on. Click Here to Read More: http://www.dydrillingrig.com/products.html;http://www.dydrillingrig.com/products/hydraulic-drilling-rigs/kg940a-mining-crawler-drilling-rig-improved-by-dy140.html;http://www.dydrillingrig.comlTechnical Parameters of Hydraulic Drilling Rigs ( KG Series ) ModelKG910BKG920AKG920BKG930AKG940ARock hardnessF=6-20Diameter of holeΦ80-105 mmΦ80-115 mmΦ80-115 mmΦ80-125 mmΦ105-152 mmOptimum drilling depth25 mWorking pressure0.7-1.0 MPa1.0-1.7 MPa1.0-1.7 MPa1.0-2.4 MPa1.0-2.4 MPaAir consumption9-13 m3/min9-16 m3/min9-16 m3/min9-18 m3/min12-24 m3/minRotary speed120 r/min107 r/min107 r/min120 r/min100 r/minRotary torque980 N.m1400 N.m1400 N.m2000 N.m2800 N.mLift power15000 N15000 N15000 N17000 N22000 NClimb ability30°Main WinchL.36.5°; R.11.5°L.100°; R.45°L.100°; R.45°L.100°; R.45°L.95°; R.50°Effective Height of Mast900 mm900 mm900 mm1200 mm1200 mmDrill rodΦ60Φ60Φ60Φ76Φ76/Φ89Weight3300 kg4000 kg4200 kg6000 kg6500 kgDimension (mm)4100*2030*20204400*2200*20504400*2200*20505355*2215*23655355*2330*2365
manufacturing quality is difficult to guarantee: high-frequency impact of hydraulic rock drill is achieved through the internal oil distribution valve to change into the oil before and after the
The by underground industrial test, Reference YYG50 hydraulic rock drill design is reasonable, compared with the existingdomestic boring machine, its small size, moderate weight and other characterist
The lightweight hydraulic drilling rigs rock drill, rock drill rig machines are widely used construction machinery for mining, construction, engineering, construction and other fields. Although the
In fact, not only is required for different rock drill three screw tightening torque, even if it is the same rock drill three long screw tightening torque required will also vary with the time ch
the sealing effect with the size of the gap, pressure difference between the mating surfaces of the length, diameter, size and boring machine processing quality factors, in order to achieve the d
the sealing effect with the size of the gap, pressure difference between the mating surfaces of the length, diameter, size and boring machine processing quality factors, in order to achieve the d
crawler drilling rig Good reliability, easy operation, easy maintenance. Skills. 1, pneumatic rock drill use require drilling machine inlet of dry compressed air, drilling rig clean water softener is
push the crawler drilling rig plunger up the second stage: the plunger during ascent, the valve sleeve push up until the fixed position, so the high-pressure oil through the drilling rig supplier valv
drill rig for sale suitable in medium hard or hard rock wet drilling down and tilt perforated. The drilling rigs head diameter of 34-42 mm effective drilling depth of up to 5 meters. Short air leg wit
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