What is honeycomb type main girder of ZZHZ launching gantry?
ZZHZ Launching gantry uses new and unique honeycomb type main girder which features high stiffness and low deflection and will bring large benefit to our customers. Please take below introductions as a reference:
ZZHZ launching gantry
How to install the electric hoist?
How to conduct test run of HZQ900T bridge girder launcher?
1.Test run of hydraulic systems of HZQ900t bridge girder launcher should follow the procedures below:
HZQ900T bridge girder launcher
What are price factors for launching gantry?
The launching gantry is the equipment which installs the pre-cast concrete girder on the prefabricated piers. This invention has made a great contribution to the Chinese bridge construction field.
launching gantry
What is main feature of HZY900t girder carrier?
HZY900t girder carrier is used to carry 900t precast girder to the rear part of HZQ900T bridge girder launcher.
HZY900t girder carrier
Hydraulic system and electrical system of HZQ900 launching girder
launching girder
Hydraulic system
Hydraulic system is set up in the from of distribution, includes rear leg 1 set, front leg 1 set, auxiliary leg 1 set, auxiliary overhead crane 1 set, lifting trolley 2 sets and so on, made up of hydraulic pump station, control elements, executive components-hydraulic oil cylinder and other parts; two control mode: centralized control and remote control
Electrical system
3-phase 4-wire power supply, voltage grade 380V/220V. motor driving devices of the bridge girder launcher mainly includes lifting motors 4 sets, moving motors of lifting trolley 4 sets, moving motors of rear leg 4 sets, moving motors of auxiliary leg 2 sets, hanging driving motors of auxiliary leg 4 sets, hanging driving motors of front leg 4 sets, driving motors of auxiliary overhead crane 2 sets, hydraulic pump station motors 6 sets and winch hydraulic caliper disc brake pump station 1 set
What is brief introduction on front leg of HZQ900T bridge construction crane?
HZQ900T bridge construction crane is specially designed for highspeed railway, featuring many kinds of concrete girders installation, large lifting capacity, high accuracy for installation, applicable for span-shift bridge and curved bridge and others.
900t bridge construction crane
Brief introduction on rear leg of HZQ900 launching gantry
HZQ900 type launching gantry is mainly made up of main girder and front, rear cross girder; front lifting trolley, rear lifting trolley, rear part winch system; front leg; rear leg and rear leg bogie; auxiliary leg and bogie; guide beam; cantilever beam and auxiliary trolley; control cabin and electrical control system; hydraulic system and power system, safety protection device and other parts. Below is brief introduction on rear leg：
HZQ900 launching gantry
Rear leg is o-type closed structure, upper part (the third section) and main girder is connected with M30 high tension bolt. Max section (the first section) bottom part is connected with moving bogie, one pair of moving driving wheel is set up respectively at the right and left, middle hinge seat cushion block at the bottom part of the gearbox provides support; set up hydraulic oil cylinder, realize change between load-carrying device (hinge seat cushion block support) and moving wheel.
Left and right moving gearbox moves on the special rail, rail distance 5900mm, rail type Q120
One hydraulic pump station is installed at the bottom part of the support leg, pump station 7.5kw.
What is brief introductions of auxiliary support leg of bridge girder launcher?
Auxiliary support leg is main load-bearing and driving parts as HZQ900t bridge girder launcher crosses piers, as auxiliary lifting point as moving guide beam longitudinally
HZQ900t bridge girder launcher
What are steps for launching gantry to cross piers?
Walking type launching gantry is a special bridge construction equipment for highway construction. With step by step, it crosses piers to prepare for gider installation. Below steps for crossing piers for your reference:
launching gantry
