Crane means within a certain range vertical lifting and carrying heavy loads of horizontal multi-action lifting machinery. Also known as cable car. It belongs to material handling machinery. Relevant agencies working characteristics of the crane is doing intermittent exercise lifting equipment, namely a working cycle Reclaimer, transport, unloading and other movements are working alternately lifting equipment, cranes development and use in the market increasingly The more widely. Crane safety devices: safety devices luffing jib. When the mishap occurred large lifting equipment, boom luffing cylinder loop burst high-pressure hose or tubing or cut off, the hydraulic circuit balancing valves to work, locked from the fuel tank under the working oil chamber, so boom It will not fall, so as to ensure the safety of operations. Lifting equipment manufacturers | Yongchang Machinery (certified) | lifting equipment provided by the Henan Yongchang Engineering Machinery Co., Henan Yongchang Engineering Machinery Co., Ltd. (www.tadanocrane.net) is Anyang, other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Yongchang machinery leadership with the staff warmly welcome all inquiries negotiations to create a better future Yongchang machinery.