construction machinery 6T toplesstower crane with CE ISO certificate

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Descriptions of our tower crane:

Our Tower Crane is characterized by horizontal jib frame, trolley travel, slewing self-climbing, novel structure and reliable running. All accessories are adopted from home famous brands and electrical components from international famous brands. “Quality First” is not just a slogan, which has already deeply rooted in our soul, besides we will also make all your purchases in unlimited satisfaction with our star-rated after-sales service.

Advantage of our tower crane:

1, boom relief Angle is big, greatly widened the equipment capacity and scope of work.

2, suitable for the group of tower cross homework.

3, boom stability is good, combination amplitude range.

4, suitable for height have special requirements occasions construction.

5, lifting capacity big, effectively solve the high steel structure construction team crane big lifting capacity requirements.

Specification of our tower crane:


construction machinery 6T toplesstower crane with CE ISO certificate

construction machinery 6T toplesstower crane with CE ISO certificate

construction machinery 6T toplesstower crane with CE ISO certificate

construction machinery 6T toplesstower crane with CE ISO certificate


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Q:Breifly explain the brake system in the lifting devices ex. Over head crane?
Cranes work using hydraulics and cables. The cables are wrapped around pulleys and the pulley is turned using hydraulic power. The brake system is simply stopping the pulley from turning by reducing power. The hydraulic system typically will turn a series of gears which in turn spins the pulley that the cable is wrapped around. It's different than a brake system say on a car where when you hit the brakes, pads squeeze on the interior of the wheel rim slowing it down. Cranes you just reduce power and stop the pulley from turning. They also have emergency stops. Older cranes have wedges that would be released onto the cable and then the wedges would grab the cable and slip into a ring. The narrow end of the wedges would slip into the ring first and then as the wedges increased in diameter the grip on the cable would get tighter and then stop the cable from moving. They also have systems on the pulleys to stop the pulley from spinning. They essentially work the same way as a car break. When the emergency brake is triggered, pads will squeeze on the rim of the pulley to stop it. These mechanisms work by friction. They could also have holes around the pulley and a steel pin would be pushed into one of the holes to stop it from spinning. Of course if the force of the weight exceeded the strength of the pin, it would shear.
Q:how does the power electronic drives employed in cranes?
The primary function of an electronic drive is to provide for operation at various speeds. Slow speed operation is used when moving a load into position. Faster speeds are used for moving loads over longer distances. When the operating speed is steplessly adjustable, ramped acceleration and deceleration control is easily provided as well. Controlled acceleration provides smoother operation because acceleration at a constant rate means accelerating with a constant force or torque. Electronic drives control torque and current during starting. They perform a function similar to a reduced voltage motor starter, but they do it steplessly, more efficiently, with more complete control of applied torque. They provide more torque per ampere of current than any other starting method. This is very beneficial for the frequent starting and stopping often required for cranes. Electromechanical motor controls for cranes require additional contactors, relays and other components to perform functions such as reversing, motor overload protection and braking. These functions are incorporated into the electronic controls with electronic drives. Electronic braking can return energy to the power supply and bring the load to nearly a complete stop before a friction brake is applied. For holding the load in position, an electromechanical brake is still required. Electronic drives can be used on bridge, trolley and hoist applications.
Q:Any good books on Fujian white crane kung fu? In particular their view on qi, jing, power and punching?
There is only one book written on Yong Chun White Crane and it is out of print. I have word that the author is planning on revising and re-releasing it. There is no set date but when I learn more, I will give any details. @gangsta - what are these books you are referring to? Do tell!
Q:What prior education and skills are needed to become a Crane operator ?
A basic education is required, no need for major courses. Skills however is developed through training. One is communication skills using a radio. Because crane operators have a partner called rigger, who overlooks the movement of crane below while telling instruction to the crane operator. Another skill is synchronization. Crane operators should possessed good movement synchronization and operation of levers and buttons inside his cabin. Another is good eyesight. Lastly, safety skill. Operators should know the capacity or the equipment he is operating and the calibration of the machine he is using.
Q:Do you think that crane fly is still alive?!?
Crane flies are totally harmless. Don't worry about it.
Q:Does tower crane belong to special equipment?
Tower crane is a high-altitude operation, the type of work belongs to special types of work, equipment belongs to special equipment.
Q:I'm a 15 year old guy... and afraid of Crane flies and Spiders..?
Pshh I don't blame you!! Crane flies are ******* hugeee dude!! The fact that there legs are so long and they just come flying at you, omg you just want to diee. But I'm not scared of spiders, unless they are huge like tarantulass!
Q:why are siberian cranes endangered?
Wetland loss means Siberian Crane loses ground Siberian Crane Grus leucogeranus is now listed as Critically Endangered, having previously been listed as Endangered in 1994. Its population is estimated to be 2,500-3,000 and comprises three separate populations. The western population breeds in western Siberia and winters in Iran, and the central population breeds in western Siberia and winters in India. Both the western and central populations are on the verge of extinction as a result of habitat loss and hunting. The much larger eastern population breeds in eastern Siberia and winters in the lower Yangtze basin in south-east China. The main threats to this population are wetland destruction and degradation at staging areas and wintering sites caused by agricultural development and the development of oil fields. The main wintering site in China, Poyang Lake in Jiangxi Province, holds 95% of the global population but is potentially threatened by future hydrological changes resulting from the construction of the Three Gorges Dam and other dams. If the operation of these dams prevents the development of suitable winter feeding conditions for waterbirds at Poyang Lake and other wetlands, Siberian Crane and other threatened species could undergo extremely rapid population declines in the near future.
Q:I am a fellon, I made a mistake and I need help getting my crane certifacation. so I can work.?
lol, yeah, how about just flip my burgers.
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