Line hanging approach common problems, you know how much? Line hanging is now important machinery construction companies, industrial development, can not avoid the individual parts are subject to wear deformation, etc., it is important to find out why the goal line hanging, in order to take timely remedial measures in the course! Mainly due to normal wear line hanging valves in the following areas: 1, wear: sports secondary hydraulic spool valve and other mechanical parts between, in the use of the continuous generation of friction, so that part size, shape and surface quality occur change and failure. 2. Fatigue: Hydraulic valve springs and related balance valve, valve seat, in the long-term high variable loads work, will produce fatigue and crack, causing the spring to shorten the length of the entire break, and peel off the valve seat sealing surface damage failure. 3, deformation: the hydraulic valve parts in the process of residual stress and residual use and Foreign load stress exceeds the yield strength of the component materials, parts deformation, and failure can not complete the required function. 4, corrosion: hydraulic oil mixed with water or acids is too high, the use of a longer time, will corrode the hydraulic valve in the related parts to fail and lose their accuracy. In addition, when the hydraulic valve manufacturing or repair, not paying attention to achieve technical requirements, such as dimensional accuracy, surface roughness, heat treatment specifications, there is no guarantee the required tolerances during assembly, the position deviation excessive and improper care part occurrence rust, dirt, etc. mix of people, causing the hydraulic valve failure are an important factor in job required heavy lifting row spreader and installation 1, shackle: Shackle, also known as Resurrection or rings by the loops and cross pin composed of two parts. Curved straight annular and horseshoe ring two kinds; cross pin are threaded and pin hole and the like. Carrying capacity nose buckle is generally 10-15kN, even thousands of Newton. When using the shackle, rope or rings connected should be set in a curved line hanging ring BU test, a set of cross pin in BU, were not allowed to cover the shackles of two straight segments BU, make shackle by transverse force. 2, hooks and rings hook with a single hook and double hook line hanging two kinds of drums, hook material 20 high-quality carbon structural steel or 16Mn steel, small hook from the weight of forging made general line hanging, big play the weight of the hook by steel riveting. Rings generally motors, gear and other devices used in the installation or maintenance of a lifting spreader with fixed. 3, balance beam: balance beam, also known as cross hanging beams or iron pole, its many forms, and can be divided into the support pole type and style categories. General sling horizontal angle to 45 ° -60 ° is appropriate. Sling short pole type balance beam, and it does not produce the horizontal component, the main load transfer from the beam bending moments, used for hanging large trusses, roof trusses and the like. 4, lug: lug points welding lug and clamp-type lug. Solder lug points and Tubeaxial lifting lug lug. Line hanging test _ _ Zhoukou line hanging heavy generous generous by heavy machinery Co., Ltd., Henan Province. Heavy Machinery Co., Ltd., Henan Province, generous (www.hnqizhongshebei.com) (www.hnqizhongshebei.com) strong, credible, in Zhengzhou, Henan engineering, construction crane industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving generous innovative ideas will lead into the brilliant heavy and you work for a better future!