Recently，At the construction site of plateau railway tunnel，The arch frame trolley independently developed by China Railway Construction Heavy Industry Co., Ltd. carries out auxiliary survey and setting out in a professional and orderly manner.、Installation of full-section assembly arch frame、A series of construction operations such as welding of mesh connecting bars，Build for plateau railway tunnel“Steel and iron”。

Arch frame trolley multi-frame arch frame construction site

The construction of arch centering is the key procedure in the primary support of tunnel.，And can effectively control that prop release and deformation of the stress of the surrounding rock.，Increase the safety of the supporting structure。The biggest environmental characteristic of the plateau area is cold and anoxic.，Railway Construction Heavy Industry Tackles Key Problems and Innovates，Developed suitable for plateau arch construction operationsSCD133GArch frame trolley，Auxiliary hair prying can be realized.、Auxiliary measurement、Arch erection、Mesh connecting bar welding and other construction operations，Satisfy 6×6 m to 16×Arch centering construction of various tunnel chambers of 13m，Covering the whole section、Two-step equal construction method。

SCD133GThe arch frame trolley has the following characteristics:：

1.And has strong environmental adaptability

Plateau areas above 4500 meters above sea level，The arch frame trolley can work reliably and stably.。

2.And that construction efficiency is high，And that labor intensity is low

The arch frame shall be prefabricated outside multiple holes.，The installation of three arch frames only needs to weld the connecting bars and meshes of the first arch frame.，Three operators can complete the construction within one hour.。

3.And that construction quality is high

Arm support manipulator with multiple degree of freedom，Combination of coarse and fine adjustment of arch posture，And ensure that accurate alignment of the connecting flange hole of the arch frame.，Ensure that the installation error of the arch is within 5 cm。

  

SCD133GArch frame trolley

Railway Construction Heavy IndustrySCD133GIn the construction of plateau railway tunnel, the arch frame trolley solves the problem of low construction efficiency of single arch frame.、High labor intensity of manual construction and the like.，Fficient assembly of multi-arch frame、The synchronous welding of 3 hanging baskets has been recognized and praised by customers.，It highlights the advantages and strength of railway construction heavy industry tunnel equipment in plateau tunnel construction.。Coming up，Railway Construction Heavy Industry will continue to innovate，Serve customers with better quality products，Contribute to the development of national transportation。