• YONGMAO STL720 tower crane System 1
  • YONGMAO STL720 tower crane System 2
  • YONGMAO STL720 tower crane System 3
YONGMAO STL720 tower crane

YONGMAO STL720 tower crane

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Tower Crane Model Type:Luffing

Max. Lifting Capacity:50/32T

Tip load:9.0T

Arm Length:60M

Independent Height:48.4M


Founded in the year of 1996, Yongmao is one of the key suppliers specialized in manufacturing construction machinery and engineering equipment.

We currently offer a variety of tower cranes which are broadly classified under the Topless STT series, the ST series, the Luffing STL series and the Derrick QD series, as well as crawler cranes and modified vehicles.

Yongmao tower cranes have not only been working for various domestic projects like hydroelectric power plants, nuclear power plants, shipyard, wharf, bridge, aerospace etc. but also acting in numerous construction projects all over the world.

Yongmao appreciates the reliance and confidence given by its valuable users all over the world and feels very proud of its ability and capability to contribute value added services to its users both at home and abroad.

Q:Emergency treatment of interrupted electricity during lifting of tower crane
It is very dangerous to stop the electricity during the lifting of tower crane. Because the slewing brake is missing, the tower crane is very dangerous because the wind rotates.
Q:What is the difference between a jack up tower crane and a fixed tower crane?
Tower cranes, because there is no running mechanism, so tower crane can not do any movement. Fixed tower crane can be divided into the tower height invariant and Jack up. That is, the jack up tower crane is a kind of fixed tower crane.
Q:Question says it all. On the Yahoo homepage, there is a breaking story that you can not click on, stating the NY fire department are responding to a building collapse, but when you try searching it, only a story about a crane comes up in Yahoo search engine. Anyone know if it's 2 different stories or the same thing?
there okorder /
Q:They're so big
large cranes are build at the factory and torn down and put together the first time, then after that the can be move in larger sections than when it came from the factory.
Q:any1??
forces for cranes are dynamic , so u'll have repeated cycles of compression tension ( i assume it's a trussed crane). but generaly for a cantilever , the main forces are -ve Bending Moment +ve shear which changes the rft. bars position if dealing with R.Concrete for example
Q:A crane operator was extended his Tadano crane boom(two section of boom out of five) at almost 0 degree boom angle. My question is-Is it safe to lift any load at 0 degree boom angle.
I suppose Tadano is the manufacturer and they make several models most of which are safe at zero degrees with two sections extended. The weight of the extended cable and hook need to be added to the weight being lifted or lowered, so the allowable weight could be zero for a very long cable. Some safety factor is present, so you may choose to push your luck. A cable that breaks suddenly can whip around in a dangerous manner. If you bend the boom replacement will be very costly. If the boom was bent in a previous lift, it is much weaker than an unbent boom and the extending feature may jam. Neil
Q:what can lead tower crane to blank out?
(1) tower crane has crack; (2)Brake block friction lining wear up to 50% ofRaw material thickness ; (3)Brake wheel surface wear reaches 5mm ~ 2mm (4)Spring has plastic deformation; (5)Lever system, air travelis more than about 10% of its rated trip
Q:Calculate how much power the crane has?
the crane ?? The crane is not defined.
Q:I just can't figure this out. They need a crane to assemble tall buildings, but how do they assemble the crane? Especially if the building is over 20 stories high. What crane can build a crane higher than itself?
a mobile crane sets the original lower sections in place, and then the crane is assembled in 6' sections as it climbs itself.
Q:More specifically, do Sandhill Cranes eat squirrels?
No! They eat fish and amphibians. .

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