Well drilling rig hydraulic pump failure Check the hydraulic pump is the core structure of the drilling rig, the hydraulic system of the power source, pipe roof drilling rigs, machinery and equipment equivalent to the "heart", of course, be used in a long time or use under inappropriate circumstances, It will result in a failure to produce hydraulic pumps, hydraulic pump failure when we need timely resolution. The reason the first thing is to check the fault generated: 1. Check the boom cylinder leakage situation. The easiest way is to raise the boom to see if there is a significant decline in freedom. If the fuel tank drop significantly the disassembly inspection, such as worn seals should be replaced. 2. Check the control valve. First clean the safety valve, Wuxi pipe roof rigs, check the valve for wear, pipe roof rigs offer, such as wear and tear should be replaced. If after the safety valve remains unchanged, and then check the control valve spool wear, the gap is generally limits the use of 0.06mm, severe wear and tear should be replaced. 3. Measure the pressure of the hydraulic pump. If the pressure is low, then make adjustments, plus the pressure is still not tune up, then pump heavy wear. End surface design in the form of DTH DTH drill bit is an important part submersible drilling rig, the end face of the design in the form of high pressure DTH drill bit used, there are four: the end face of the convex type, planar end face, face concave and the end furrow center type. 1, the end face of the convex type: This drill two forms, single and double boss bosses face, which is mainly used for large diameter DTH Bits. Convex end surface drill DTH drilling in hard and hard to maintain when abrasive rock drilling higher rate, but poor flatness drilling, crawler pipe roof drilling rig, does not apply to blasthole flatness demanding drilling projects. 2, the end face of the flat-type: This form relatively rugged drill for drilling hard and very hard rock, but also for the flatness of drilling blast holes in less demanding hard rock and soft rock. 3, face concave: this shape drill head has a conical end face of the concave portion is formed in the drilling process, the drill slightly to keep the drill bit nucleation of performance, blast hole drilling has a good straight line degree, this drill row powder effect, drilling speed, is currently on the market use more DTH Bits. 4, the end face of the center furrow: This drill shape is evolved from the same type of ball tooth bit to the end face of the central portion of the drill bit has a deep concave central portion. For drilling during nucleation, ensure flatness when drilling deep boreholes, only applies to drilling in soft rock and hard rock. Pipe roof drilling rig manufacturers, dragon industry machinery (certified), pipe roof drilling rig by Dragon Machinery Co., Ltd. Shandong. Machinery Co., Ltd. Shandong Long (www.longyejixie.com) is Tai'an, engineering machinery parts leaders, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Lung industry machinery leadership with the staff warmly welcome all inquiries negotiations to create the dragon industry machinery better future.