Hot Sale China Supplier Tower Crane Parts Jib China Supplier
50m arm assembly sequence: 1+2+3+4+5+6+7+8+9
44M arm assembly sequence: 1+2+3+4+5+6+7+9
38M arm assembly sequence: 1+2+3+4+5+6+9
1. Topkit tower crane : Jib lenght (30-80M); Max under hook hight(141-280M); Max load (6-64T)
2. Topless tower crane: Jib lenght(30-80M);Max under hook hight(141-280M); Max load (6-20T)
3. luffing jib tower crane:Jib lenght(30-50M);Max under hook hight(103.5-128.34) Max load(8-16T)
One is the balance of the cross arm, it and the connecting shaft of the tower as the pivot lever, one side is hanging, hanging heavy objects, on the other side has a heavy weight, each side at the top of a wire rope connected to the top of the tower.When the object is moving on the lifting arm, the tension on both sides of the wire will change to keep the lever constant.
The other crane as a whole is a lever with its centre of gravity (probably not on the crane) as a fulcrum.The base of the crane is larger and has heavy weights.At the other end there is a supporting weight, so long as it is attached to the object of the boom and the gravity of the crane itself, within the base range, the crane will not tip over.When the object moves on the lifting arm, its center of gravity is moving, the power arm and the resistance arm are all changed, but the lever of its composition is always balanced.
What are the structural features of the lifting arm?Tower lifting heavy arm can be divided into the lifting arm (movable arm) and the trolley (flat arm) tower crane.Pitch luffing jib tower cranes relies on hoist boom lift unrealized amplitude, its advantage is: can give full play to the effective height of hoist boom of, simple structure, is limited in its biggest disadvantage is the minimum amplitude by about 30%, can't completely close to the tower, when amplitude load with crane boom lift, can't load range.Car luffing jib of tower crane is to rely on horizontal jib track installed on the car walks the realization of amplitude, its advantage is: wide range, load the car drove up to the tower, can load amplitude, the disadvantage is that: the lift arm force is complex, the structure of the demand is high, and the boom and the car must be in the upper buildings, towers installation height is 15-20 meters higher than building roof.
SYM HOIST & TOWER CRANE QUIPMENT CO.,LTD located in Shenyang China is one of the biggest supplier and export of tower crane, luffing crane , topless crane , passenger hoist along with the spare parts for them. With 20 years' experience on tower crane rent , installation , repair and reconstruction, the company has more than 50 experienced mechanical and electrical engineer responsible for the installation guide, failure diagnosis, maintainance and reconstruction for the tower craneattheconstructionsite.
Having a long-term and good cooperative relationship with China's most famous manufacturer of tower crane and passenger hoist like YONGMAO, SANYO, Sichuan SCM, Zoomlion, GJJ, BAODA,etc. The company can offer you the best quality original tower crane and passenger hoist with most competitive price.
Also, we can provide customers with the best professional services, help customers make the right judgment, also the prompt shipment because of the largest number and most complete tower crane and passenger hoist spare parts inventory.
Our trading partners go all over the world, mainly in South-East Asia (Singapore, Hong Kong, Malaysia, Indonesia, the Philippines, Thailand, South Korea, Vietnam ), Middle East (The United Arab Emirates, Saudi Arabia, Qatar, Bahrain, Kuwait, Iran ), India, Russia, Ukraine, Brazil, etc.