Hydraulic pump caused the main reason for the boom can not raise the load 1. pump heavy wear. At low speed pump leak serious; high-speed operation, the pump pressure is slightly increased, but due to wear and internal leakage of the pump, volumetric efficiency decreased significantly, crawler drilling rig manufacturer, it is difficult to reach the rated pressure. Long working hours and increased pump wear, Crawler Drilling Rig Which is good, temperature rise, the resulting wear of hydraulic components and seals of aging, damage, loss of sealing ability, hydraulic oil deterioration, leading to failure. 2. The selection of hydraulic components unreasonable. The boom cylinder specifications for the 70/40 non-standard series, seals also non-standard parts, high manufacturing cost and inconvenience of replacing the seal. Boom cylinder bore small, is bound to make the system set pressure is high. 3. The hydraulic pump system design is unreasonable. Figure 1 shows, control valves and hydraulic steering gear as a single pump series, the safety valve set pressure points 16MPa, while the rated working pressure of the hydraulic pump is 16MPa. Pumps often work at full load or overload conditions for a long time, and the system has a hydraulic impact, long-term oil changes, hydraulic oil contamination, increased pump wear and tear, so that the pump casing burst. Rig should always check the item 1, the end of the steel cord to conduct inspections of consolidation; the contents of the wire rope inspection are: wire rope safety defect inspection lap, crawler drilling rig, rope selection, installation, lubrication, wire rope, wire rope as diameter and wear, broken wire number; 2, ready to rig a pulley system checks, Crawler Drilling Rig offer, mainly the project: a pulley body condition, transition pulley anti-skipping devices; 3, walk at any time of the rig system checks, the main test items are: pile driver walking tubes, pallets and hook pipe system status, laying sleepers Crawler Drilling Rig | Long industry machinery | crawler drilling rig model provided by the Shandong Machinery Co., Ltd. Dragon. Crawler Drilling Rig | Long industry machinery | crawler drilling rig model is Machinery Co., Ltd. Shandong Long (www.longyejixie.com) this year introduced a new upgrade, the above picture is for reference only, please call the contact or pictures on this page phone, for the latest information, contact: Guo Lei.