Product Description
Tower crane Mast Section
Mast section is composed of standard joints which are formed by group welded of angle steels with the structure of long square space trusses.
Every two standard joints of tower body are connected firmly by Level 10.9 M27 high-strength bolts and screws. Inside each standard joint there is a ladder with the same length so as to facilitate manipulation and maintenance personnel getting on and off tower crane.
There is one rest platform every three joints. All standard joints have interchangeability. By changing the number of tower body standard joints installed, the crane will reach different lifting heights.
Two groovy footsteps are welded respectively on two main chords on the same side of standard joints. This position of main chords has been strengthened.
While doing jack-up work, with the expansion of jack-up cylinder, shaft heads at two ends of jack-up beams and climbing claws of jack-up set frame fall into the footstep groove successively according to the procedure, so as to make jack-up set frame elevate vertically along with tower body.
When two cycles of motion are completed, the jack-up set frame will elevate one standard joint height. Accordingly, at this time, one standard joint could be added.
Repeat motion like this to make tower body achieve required height. When disassembling the tower crane, the reversed procedure is adopted to lower the height of tower body step by step
Dimension ofmastsection:
1.5m*1.5m*2.2m for QTZ50 4808/4810/5008
1.606*1.606*2.5 for QTZ63 TC5012
1615m*1.615m*2.5m for QTZ60 TC5010/QTZ63 TC5010
1.68m*1.68m*2.5m for QTZ63 TC5013
1.8m*1.8m*2.8m for QTZ63 TC5610/QTZ80 TC6010
1.835m*1.835m*2.5m for QTZ80 TC5513/QTZ100
TC6010/QTZ125 TC6515
2.0m*2.0m*3m for QTZ315 TC7040 tower crane
Also we can supply stand section, example L46A3 or L46A1, if you need any information, pls kindly contact with us:)
Automatic impeller blasting and spraying assembly line
The company adopts the world first-class automatic spraying assembly line.
The large structure parts are dealt with impeller blasting before spraying.
That effectively removes steel surface oxides and welding spatters, eliminates the internal
stress in welding process, increases the parts' anti-fatigue strength
and steel surface hardness, and increases painting adhesion,
so that it prolongs the service life of the product, maximizes efficiency, and saves energy.
Our services
1.Customized service.
We can do all special design according to yourrequirement
2.Welcome visit our factory, learn about our factory and products.
3.24 hours on line or phone , technical support
After sale service:
1.The seller will send one of her professional technicians to the site of buyer toguide the erecting work.
2.12(twelve)months (except for wire rope and AC contactor) after the equipment be well erected and we will offer spare parts whole year long.
3.Life long time freely provide technical support.
Q1:Whether you can provide customized products?
A1:Yes.We are hi-tech enterprise affiliated to China Academy of Building Research.We have a group of engineers, who have title of professor , senior engineer and engineer.We can give you special design as per the drawings of your building, helping you solve different problems faced in your projects.
Q2:Whether customized products takes a very long time to design and manufacture?
A2:Not exactly.Normally for us, some amendment in design to adapt your requirement will take one week.So even for your special project, it will be about 30-40 days delivery time.
Q3:What is the brand of your key components?
A3:Motor:Sanshang from Shangai, Gearbox:Xingxiang from Nantong, Inverter:Zhengxuan from Shenzhen and ABB or Schneider can also be choosed.
Other electrical components:Schneider or Simens
Automatic laning system:Weikong of Jinan for construction hoist
Q4:What kind of services you can provide?
A4:We are dealing with construction machinery for about 15 year.High quality is our advantage, and high technology is our core competency.We ensure that all the machine have been completely tested in our factory before delivery.We will give you one year warranty for complete machine.For problems caused by our production defect, we will provide you free services by sending skilled engineer there.
Shandong Minglong Construction Machinery Co., Ltd, an incorporated company restructured based on former Shandong Zhangqiu Crane Factory, is a professional tower crane manufacturer recognized by the Ministry of Construction. It was one of the first enterprises that achieved Production License issued by the Ministry of Construction in 1988 and one of the enterprises that achieved Special Industry Tower Crane Manufacture License issued by State Bureau of Technical Supervision in 2003. In April 2005 it achieved Special Equipment Manufacturing License of People's Republic of China and has been certificated ISO 9001: 2000 standard. In 2010, Minglong set up a new trading company-Jinan Sanyisan International Trading Co., Ltd,dealing with kinds of construction machineries and building materials. For more than two decades, we have developed the advanced level QTZ40, QTZ50, QTZ63, QTZ80, QTZ100 QTZ125 and QTZ 160 self-telescoping, top slewing and trolleying on horizontal jib tower cranes with Changsha Institute of Construction Machinery of the Ministry of Construction.
Besides tower cranes, we also developed WL160 hoisting machine, SCD200/200 construction elevator, JS350, JS500 and JS750 compulsory twin shaft mixer and associated concrete and stabilized soil mixing station. Meanwhile, we also offer monitoring systems and devices of tower cranes and building hoists: anti-collision system, safety protection monitoring system, wind-speed transmitter, overload limiters, load moment limiter, height, radius and slewing limiters, GPRS remote controlling system, space limit monitoring system, anti-overturning monitor controller, wireless floor call system of building hoist, sensors of tower cranes and automatic leveling device system of building hoist.
In the past 30 years, we always adhere to "Science and technology are the primary productivie forces", established "Crane Research Institute", developed education and training of staff, and introduced a group of talents from colleges and universities, gradually optimizing, updating and upgrading products, and leading the industry. Adhering to corporate spirit of "credit by quality, development by innovation, profit by scale, serve customers whole-heartedly", we try our best to meet customers' demands. We have set up many marketing offices and agents at home and abroad!
For more information about our products, please contact us at any time. Minglong welcome customers from all over the world.
