Ironworker is a class of machines that can shear, notch, and punch holes in steel plate.Ironworkers are built with safety in mind, but they still present hazards that must be addressed and thoroughly thought out before they are purchased. Most of them have at least 4 stations that require boundaries around them to safely produce parts. They can shear flat plate, angle iron, round and square bar stock as well as punch plates, angles, I-beam and channel iron. Some have a station for notching and forming of different materials. The area around each station should be at least 20 feet since that is the common stock length of most materials used on ironworkers. Hydraulic Ironworker,Hydraulic Ironworker Machine,Punching And Shearing Machine,Punch And Shear For Sale Jiangsu Hoston Machine Tools Co., Ltd. , https://www.haostonmachinetools.com
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