19
December
The gantry crane Lifts rated load(increasing the load to rated load), and travels a round trip along the gantry, checks the function, ...
18
December
in order to reduce the labor intensity and keep the safety for lifting girder of gantry crane, we usually lift girder by hydraulic system automatically. The steps are following ...
17
December
The brake plays a very important role at overhead crane, if the overhead crane don’t have brake, just like the car doesn’t have brake. So we should check the brake regularly . ...
13
December
1. Accurate and stable up-warp value after main girder correction, and it can be adjusted anytime in accordance with different purpose; ...
12
December
Principle for using pre-stressing force method to correct main girder down-warp: use pre-stressing force to stretch-draw many steel bars or steel wire ropes at two ends of main girder bottom cover plate by fixed support, ...
08
December
4,the lifting winch’s speed isn’t stable, and jump highly
Possible reason: lifting motor coder coupling loose or break
...
07
December
There are the common faults of bridge girder launcher are following:
1,there are cracks of lower lateral combination under No. 1 pillar
Possible reason: the speed of left and right telescopic hydro-cylinder isn’t same.
...
03
December
2.1 The Beijing-Shanghai high speed railway design provisional regulations railway construction letters [2003]13 ...
01
December
Under some conditions, ZZHZ cuts main girder upper cover plate by use of the influence that main girder self-weight has on the camber, thus reduce bending modulus of main girder section at cutting position, weaken bending resistance of main girder, generate a mechanical deformation caused by main girder self-weight, then reduce upper camber value at ...
30
November
1. Good correction result, especially on harder crook;
2. Simple construction technology
...
29
November
The bridge girder laucnher, gantry crane and transporter belong to the large-scale duty machinery, they must be
installed according to the erecting priciple. ...
28
November
Sometimes ZZHZ will use flame straightening method to correct crane main girder deformation. Flame straightening method refers to that local heating on the metal structure produces plastic compression on some places and remained local shrinkage stress can correct the bend after cooling. ...
27
November
1,suspending or paste the safety warning brand to prohibit the unrelated person to come in.
2,checking the wheelbase centerline and testing in order to fit for the design, and then crane erects the traveling mechanism on the rails .
...
26
November
1, the user must know the function of slings , application notice and out-of-service standards.
2,the slings must be fit for the lifted parts .
...
24
November
Principle for repeated welding method: weld repeatedly with heavy current main girder weld joint, correct original deformation by welding deformation generated by repeated welding. ...
17
November
Under some conditions, ZZHZ cuts main girder upper cover plate by use of the influence that main girder self-weight has on the camber, thus reduce bending modulus of main girder section at cutting position, weaken bending resistance of main girder, ...
16
November
All of crane must have nameplate before it leaves factory. So the nameplate of gantry crane includes the following content: ...
15
November
Overhead crane often adopt cab operation, cab operation has open and close style. Overhead crane is often used in mechanical treatment, ...
13
November
Lubrication plays a very important role in maintenance of bridge girder launcher, the quality of lubrication can decide its life and work efficiency. As a large-scale bridge building machine , its friction is bigger because its parts need to run. ...
10
November
9. People and goods are prohibited to lift together.
10. The goods shouldn’t be allowed to stop in the air for a long time. The driver and director should stay when the gantry crane lift goods.
...
Products Categories
- Gantry Crane
- Bridge Girder Launcher
- Movable Support System
- Overhead Crane
- Shotcreting Machine
- Cinder Scraper
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