In tunnel construction，The inverted arch is a reverse arch structure at the bottom of the tunnel to improve the stress condition of the upper supporting structure.，It is the main component of the tunnel structure.。Because the inverted arch is located at the bottom of the tunnel，Temporary road disruption will occur during construction，Affect the traffic of construction vehicles and personnel on the tunnel face，Thereby affecting the construction progress of the entire tunnel.。For this reason，Trestle must be used，To ensure that the tunnel construction road can be constructed under normal traffic conditions.。

Developed by Xizhu CompanyYGSeries hydraulic inverted arch trestle not only absorbs the advantages of traditional trestle，On this basis, high strength steel is used as the main beam.，And that bear capacity is improved；Properly designed support structure and connection method，Increase the stability and service life of the trestle；New running design is adopted.，Improve the stability of trestle。Design two operating systems that are simple and easy to use，Reduce the difficulty and cost of use。YGThe walking action of the series trestle is driven by hydraulic motor、Solid tire running mode。Adjustable front outrigger height，At the same time, it relies on the hydraulic cylinder to control the left and right lateral movement.，O as to realize the turning、Straight attitude conversion；The approach bridge is connected with the bridge body in a hinged manner.，Through the telescopic action of the cylinder，Realize the lowering and lifting actions of the approach bridge。The main trestle is driven by hydraulic motor with solid tires.，The operation is simple、Be flexible，The front end of the trestle is supported on the initial support surface of the inverted arch，The rear end is supported on the poured filling surface.，The lower suspended space can ensure that the inverted arch and filling construction can be carried out without disconnection.。The trestle can be moved conveniently.、Climb、Walk，Can meet complex working condition。At the same time, this product can be equipped with side wall formwork and central ditch formwork.，The action is simple、Convenient、Easy to control。Successful Development of Hydraulic Inverted Arch Trestle，It not only fills in the blank of China Communications Group in the field of mountain tunnel equipment.，It also marks a new breakthrough in the field of tunnel installation by Xizhu Company.。