CE certified Segment Lifter for Inductry Usgae
It is a kind of bridge construction equipment.
NANTE has developed several types of Bridge deck erection system
tailored for the various erection requirements of precast segmental
viaduct. The technology has been used successfully to complete
several large balanced cantilever bridges worldwide. The crane is
fitted with electric winches and is launched forward by hydraulic
system. The crane can also be equipped with steel wheel/rails or
rubber tyre mounted for increased mobility.
Our range launching girder is an important machinery for building
high rise constructions, bridges etc. These launching girders can
handle cat-in place concrete, as well as prefabricated elements,
hence they are highly adaptable for varied spans and types of
superstructure. with sophisticated design & fabrication, these
launching girders are itself a steel structure, which moves forward
on the high rise constructions or the bridge piers span by span.
with varied launching capacities and heights, our range of
launching girders are made using quality material, ensuring durable
and reliable performance.
Launching cranes are widely used in the following applications:
1. Bridge construction
2. Highway construction
3. Railway construction
4. Road construction.
Design features include:
1. Reliable performance
A) Apply the latest separate pinned structure of triangular space
truss to main girder, so as to improve the stiffness and strength
of whole crane.
B) Main girder is made of Q345 high strength steel, and melt into
the latest design to ensure the main girder can work under high
strength mode safely.
C) ZHONGJIAN brand launching crane is pioneering in continuous one
time operation during bridge launching progress in China. It is of
the most complete function launching crane for single machine
domestically.
D) Compared with similar products from other supplier, ZHONGJIAN
brand launching crane have its unique design concept to the most
difficult hole-span during bridge erection, in the way of laying
side beam. So, it is safer to operate under high difficult and risk
condition.
E) Powerful front, middle beam and three transom crane connect
together to ensure transverse stability during bridge erection
fully.
F) There is separate stroke switch control to each traveling
mechanism, so as to decrease mutual collision between each
traveling mechanism.
G) Overload resistance system: There is high performance weight
limiter on two sets of trolleys, so if the lifting girder is
overloading, the weight limiter will stop it at once.
H) There are normally three legs from other supplier. But we have
four legs, including one front leg, one middle leg, one rear leg
and one temporary leg.
I) Apply inner shrink leg to one time erect side beam in position
and have more safety.
2. More powerful corrosion resistance
A) Strictly execute standard painting process to ensure blasting
and painting quality.
B) Apply H steel enclosed section for main girder chord. Web chord
is made by customized square tube to realize enclosed welding,
which can avoid inner rust.
3. Higher working efficiency
A) There is traveling rail together with main girder, trolley and
longitudinal crane. So, it is no need to lay traveling rail more.
In this way, a lot of auxiliary materials are saved and production
time is also saved.
B) ZHONGJIAN launching crane has higher working efficiency, with
6~8 pieces girder erection every day, based on enough concrete
plate supplying, skilled operator and good condition at site.
4. More flexibility
A) It is symmetrically designed. Two way girder erection can be
realized without split and slewing at original place.
B) Use one meter of hydraulic jack for front leg and rear leg. This
design improves working efficiency, safety and flexibility largely.
C) Erect skew bridge by inclined way. Apply rotary face flange to
connect each mechanism and structure, to erect 0~45° Skew bridge.
Side beam can be positioned one time for over 320m curve radius
bridge.
5. Easier assembly and disassembly
A) Each structure is connected by pins and bolts to facilitate
assembly.
B) Normally one set of launching crane can be assembled within
7days.
Technical particulars of JQG walking type launching crane |
Model & type | JQG100T/30m | JQG140T/40m | JQG160T/45m | JQG180T/50m | JQG250T/55m |
Rated capacity(t) | 100 | 140 | 160 | 180 | 250 |
Suitable span(m) | 30 | 40 | 45 | 50 | 55 |
Suitable beam shape | T-beam, I-beam, box-beam |
Suitable longitudinal slope for erecting beams (%) | ≤ 30% |
Crossing angle for erecting inclined overpass | 45º |
Traversing speed of crane trolley (m/min) | 1.8m/min~2.5m/min |
Longitudinal speed of trolley bogie(m/min) | 4m/min | 3.7m/min | 3.2m/min | 3m/min | 3m/min |
Lifting speed of hanger girder (m/min) | 0.9~1m/min | 0.9~1m/min | 0.8~0.9m/min | 0.8~0.9m/min | 0.8~0.9m/min |
Traversing speed of whole crane (m/min) | 2.5m/min | 2.5m/min | 2m/min | 2m/min | 1.8m/min |
Longitudinal speed of main girder (m/min) | 3 | 2.8 | 2.5 | 2 | 2 |
Minimum radius of erecting curves (m) | 280 | 300 | 300 | 500 | 500 |
Dynamic lifting capacity under test load(t) | 125 | 175 | 200 | 225 | 312.5 |
Static lifting capacity under test load (t) | 110 | 154 | 176 | 198 | 275 |
Through-hole mode | walking type |
Beam feeding mode | Rear car feeding |
Total power(kW) | 81.2 | 115.2 | 127.6 | 139.8 | 151.2 |
Weight(t) | ≈ 108 | ≈ 152 | ≈ 176 | ≈ 200 | ≈ 298 |