JPX30 Launching Gantry

JPX30 Launching Gantry

Segmental Launching Gantry is generally used in the erection of the Highway Bridge and Subway Bridge, using the precast segmental pre-stress concrete box beam (PC beam) assembly. The main feature is the high efficiency of construction and self-travelling. Generally it is composed of the main beam, leg and winch trolley, the main girder is used for bearing, the leg is to execute machine transverse moving, longitudinal moving, leveling, support, cross span, cross scale and other functions, and the winch trolley used for lifting the precast girder.




(1) Reasonable structure
(2) Favorable performance
(3) Smooth starting and stopping
(4) Safe and reliable traveling
(5) Low noise, commodious cabin and wide view
(6) Convenient maintenance, exchangeable parts
(7) Saves electricity

Safety feature:
(1) Weight overload protection device
(2) Lifting height limit device
(3) Low Voltage protection function
(4) Phase sequence protection function
(5) Emergency stop function

Control method:
(1) Pendent line control
(2) Remote control
(3) Cabin control
(4) Choose any two together

Item Technical parameters and Performance requirements Remarks
Type Lower support type, box beam + truss guide beam Lower support type
Span and maximum load 30m/700t
Main girder structure Box beam + truss guide beam, High strength bolt connection + Pin connection Use the universal design
Suitable longitudinal slope 2%
Suitable transverse slope 2%
Minimum working curve radius 2500m
Lifting machine quantity and rated lifting weight 1 set of 80t rated lifting weight Not include rotating spreader mechanism
Maximum segment size suitable for lifting 16.25mx3.0mx2.0m Length, width, height
Operation and control type Manual electronic control, remote control No driver room
Maximum lifting height of master (slave) hoisting crane 20m (under rotating spreader)
Lifting speed of master (slave) hoisting crane 0-2m/min, Frequency conversion speed regulation (rated load)
Longitudinal movement speed of main hoisting crane 0-10m/min, Frequency conversion speed regulation (rated load)
Auxiliary hook quantity/lifting weight 1/5t-24m Electric hoist
Cantilever length of auxiliary hook 3.5m
Independently rotating angle of rotating spreader 360º
Longitudinal moving speed of the whole machine 0-0.9m/min Hydraulic cylinder push at interval
Transverse moving speed of the whole machine 0-0.5m/min Hydraulic cylinder push at interval
Maximum distance of horizontal adjustment of the whole machine ±300mm
Total maximum suspension weight and segment number 700t/10 pieces 30m span
Beam feeding type With tail and front
Maximum appearance size of the whole machine About 71.5mx20.5mx22m Total length, total height (not include the height of support column), total width
Maximum single piece size ≤15mx3.3mx1.4m Length, height, width
Weight of the whole machine About 511t+170t
Total power of bridge erecting machine About 100kw Power of the whole machine
Maximum pressure of hydraulic system 25Mpa, 32MPa
Applicable environment temperature -15℃-+50℃

Project name: Wuhu Yangtze River HighwayNo.2 bridge segment girder prefabrication and installation engineering C-2
Project overview: Wuhu Yangtze River Highway No.2 Bridge has length of about 55.508 km, cross river main bridge and Approach Bridge is 13.982 kilometers long, and it is divided into 4 sections. C-2section is 6,026m long, and the precast segmental beam has 4,186 pieces.

JPX30 JPX30_1 JPX30-2