Sichuan Construction ( Group ) Company P125 topless tower crane and tower crane involved in Guizhou Renhe C5513 red high-speed construction .

Jen Chi -speed segment is Renhuai to Chishui Chishui to Wangmo , Guizhou Province Expressway , length 163.476 km , which is about 7 km extension study of water , Zunyi City , Guizhou Province is located in the northern part of the territory of Xishui County , Sichuan Construction ( Group ) Company the P125 topless tower cranes , C5513 tower crane were involved in bridge construction Walled off the twelfth five iron tenders to build two companies , the eighth in the cross bridge tenders Southern Company built Tsz River Bridge .

Walled off the bridge , length 998.08 m , maximum height 102 m pier . P125 involved in the construction of the bridge tower crane attached to a fixed formula , lifting height of 120m, the maximum lifting weight 10t, ends hoists 1.5t, maximum working range of 60m, 2m section using standard section , Sichuan Construction Machinery ( Group ) corporation designed and developed a new flat-head tower crane , machine uses frequency LVF hoisting mechanism , X series inverter luffing mechanism , RCV slewing luffing speed control mechanism configured institutions are developed by the company over the years of painstaking technical performance with the international advanced level , stable , easy to operate , simple structure , low failure rate , easy maintenance , safe and reliable.

Tongzi River Bridge , length 1131.6 meters , 222.6 meters high the bridge , 172 meters maximum height of piers . Involved in the construction of the bridge tower crane C5513 Sichuan Construction Machinery ( Group ) Co., Ltd. R & D to design horizontal arm tower cranes, and 6t 8t into two models , with a walking track , fixed attachment style , the climbing used in three types . The C5513 tower crane used in the construction of fixed attachment style 6t models , lifting height of 130m, the maximum lifting weight 6t, ends hoists 1.3t, 1.6m section using standard section .

With the rapid development of China's highway, railway passenger line construction across rivers, valleys and the Strait of increasing scale bridge engineering , technical requirements are high, more and more short construction period , construction tower crane for its rich Sichuan the use of form and good performance, are widely applied to the national key projects of roads, bridges , water conservancy, electric power construction.