ZZHZ wants to see the big world!
ZZHZ is one of China leading manufacturers and exporters of launching gantry. Founded in 1992, ZZHZ has been dedicated in this field for more than 20 years. With increased experience, wider vision and intense domestic market competition, ZZHZ gradually moves its eyes on the global market.
How to construct curved bridge and skew bridge?
As constructing curved bridge, adjust intersection angle between front support leg and middle support leg according to actual condition of curve radius, and adjust the position of front and middle support legs at both sides along main girder to meet the construction of curved bridge.
Main features of honeycomb girder launching gantry
Honeycomb girder launching gantry made by ZZHZ is widely used for highway bridge construction at home and broad.
What is after-sale service of ZZHZ?
ZZHZ does not only sell the products, but also provide high quality after-sales service which help customers solve many problems and release them from worries behind.
Inspection items of cranes
Inspection plays a main role in ensuring the safety operation of cranes. Below are some necessary checking points in and after the production process.
How to construct the upslope and downslope bridge?
(1) Construct the UpslopeBridge
Adjust the height of middle support leg and rear bracket to suit the bridge slope after assembling the launching girder. Before the launching girder moves longitudinally, lower the rear support leg and rise the rear bracket to ensure the slope of main girder <0.5%, and hang winch at front part of launching girder to protect it from sliding down as moving. After the front leg moves to its position, adjust the height of front support leg according to that of middle support leg, level the launching girder, then begin installing girders.
How to install the first span and the last span of bridge?
（1）Install the first span
As the launching girder installs the first span, the middle support leg usually stands on the abutment, so at the time foundation base for its lateral sliding rail must be solid and firm to avoid an accident caused by launching girder going down in the process of installing girders; before the front support leg moves longitudinally, adjust its height to the proper position; before the launching girder moves longitudinally, make a comprehensive check.
What are packing and transportation issues for launching gantry?
Launching gantry is of large and super-large construction equipment with large volume, so its packing and transportation become one of main issues for customers. Proper and reliable packing and transportation can help them save cost and time.
Two new bridge construction methods suit for less girders and long working period
Below two bridge construction methods suit for highway and high speed railway bridge with less concrete girders and long working period.
