1. Application range of MEL900t Tyred Gantry Crane

MEL900t Tyred Gantry Crane is used in the high-speed railway, passenger dedicated lines and the two-lane single-box single-chamber and dual-chamber of 20m, 24m and 32m of the intercity rail. It can also be used in the operation of lifting, transferring and loading beams for the girder transport in the precast yard.
1.The three kinds of precast concrete box girder of 20m, 24m and 32m are lifted from the production pedestal on the prefabricated template and transported to the beam storage pedestal;
2.The precast concrete box girder is lifted from the beam storage pedestal and placed in the channel of girder transport to be loaded on the girder transport in accordance with the requirements after the girder transport goes longitudinally into the girder crane;
3.It is able to work across the pier (headroom ≥21M). That is, it can lift the bridge building crane assembled and the precast concrete box girders to the bridge deck and load them on the girder transport as required. Also, it can lift the whole girder transport to the girder transport on the bridge deck. The girder crane is designed to be match with the lifting point of the bridge building crane; or the corresponding integral lifting AIDS should be provided. The MEL900t Tyred Gantry Crane has the functions of the tyred gantry crane and the cross line gantry crane.

2. Main features and advantages of MEL900t Tyred Gantry Crane

1.The MEL900t Tyred Gantry Crane employs the door type legs, the width of which meets the requirements of the 7.25-meter-wide girder transport longitudinally driving in and out with the precast box girder of 20m, 24m and 32m.
2.Other methods of loading the box girder is not allowed and the MEL900t Tyred Gantry Crane can lift the bridge building crane and girder transport assembled as well as the precast concrete box girders to the bridge deck of 7-meter-high pier.
3.The space of the longitudinal hanging point meet the needs of lifting and loading box girder of 20m,24m and 32m.
4.The vertical shift amount of fine-tuning of the lifting beam trolley with full load and the function of horizontal shift is about 500mm.
5.It can ensure that the box girder will not fall with the lifting winch equipped with dual braking system and other lifting parts with reliable design.
6.It can achieve the 90-degree turn at full load and the number of the machine of pivot steering assisting the cylinder is 32.
7.The running gear uses the hydraulic suspension system, both to meet the requirements of the three-point support of the whole machine, but also to achieve a uniform distribution of loads.

3. Main technical parameters of MEL900t Tyred Gantry Crane

Product ModelMEL900t
Dynamic load hoisting impact coefficient1.05
Lifting coefficients of static load testing1.1
Move of the whole machine 
Moving tiresBrandTECHKING
Transverse steering small angle with the machine transverse moving at full load±5 degree
±5 degree
Error amount per 100 meters of the moving system0.3m
Maximum moving slope2%
Lifting height and span 
Lifting height21m
Column center distance(span)43.3m
Net width within the span41.6m
Moving speed 
Moving speed(on the level concrete road)Heavy load m/min(changeable)0~17
No load m/min(changeable)0~30
Power of the engine440kW×2
Model of the engineDEUTZ  BF8M1015CP
Size and weight 
Out dimension: length * width * height46420×24400×27000
Self weight690t
Transport size of the maximum part:length * width * height15200×1800×3100
Weight of the maximum part30t
Technical specification of each mechanism and system 
Electrical systemControl methods of girder lifting trolleyManual / automatic / remote control
Control methods of lifting systemManual / automatic / remote control
Requirements of power input50Hz
Main beamStructureBox type
Main beamCenter distance between main beams7m
Maximum deflection with main beam bearing stress53mm
Self wight160t
Weight of the maximum single part30t
Whole size(length * width * height):45000×8300×3100
Maximum size of single part(length * width * height):15200×1800×3100
Main beam materialQ345C
Connecting bolt material35VB and 20MnTiB
35VB and 20MnTiB
Girder lifting trolley 
Number of girder lifting trolley2
Maximum distance with the machine transverse moving at full load
Maximum distance with the machine longitudinal moving at full load
Moving methods of the girder lifting trolleyCylinder pushing to slip
Lifting applianceStructureBox type
Boom material40CrNiMoA

4. type test report of MEL900t Tyred Gantry Crane

MEL900t Tyred Gantry Crane has been tested by China legal quality test department, and it is qualified.