QDY Type 74 Ton Metallurgy Double Girder Bridge Crane Working Class A7

QDY Type 74 Ton Metallurgy Double Girder Bridge Crane Working Class A7 is composed of box bridge, hook, crane traveling mechanism and electrical system. The main hook uses a load tool as a lifting device to lift the ladle, and the auxiliary hook cooperates with the main hook to complete auxiliary lifting such as the pouring of molten steel and steel slag. Various speed control systems with 1:10 speed ratio are used for main mechanisms such as lifting, trolley traveling and crane traveling. The appropriate speed can also be selected according to customer requirements.

Main Features of QDY Type 74 Ton Metallurgy Double Girder Bridge Crane Working Class A7:

Working condition:
1．The power of crane is three—phase AC；rated frequency is 50HZ；rated voltage is 380V；
2．The temperature of working environment is-10~+60℃；
3．The relative humidity is no more than 50％ when the temperature is+40℃；
4．If the requirements are more than above-mentioned,it shall carry out the requirements in the purchase contract as the user asks．

Safety feature:
A. Overload protection, in the case of overload, the lifting device is closed and only descending movement can be carried out restrict long-distance and lateral travel through preliminary and final limit switches or wireless anti-collision devices
B. Three-in-one motor fall protection for trolley crane to prevent accidental fall
C. All movements can be closed by the emergency shutdown switch of the control station activated by the main contact
D. High-quality long load-bearing polyurethane material buffer is fixed at the end of the trolley and crane to prevent overtravel
E. The safety hook latch is used to prevent the material being lifted from falling off the hook
F. Sound and light alarm device to notify people near the vehicle
G. Rainproof cover for outdoor crane lifting mechanism, electric cabinet and driving mechanism
H The protective grounding conductor is installed as standard
I. Voltage drop protection system
J. Current overload protection system

Design standards
1.Overhead crane and gantry crane manufacturing and tolerances of rail installation GB/T10183-2005
2.Crane test specification and procedures GB/T5905-1986
3.Crane electric control equipment JB/T4315-1997
4.Important application wire rope GB8918-2006
5.Carbon structure steel GB/T700-2006
6.Low alloy high strength structure steel GB/T1591-2008
7.Welding joint radiographic inspection standard JB928-1994
8.Steel welding joint manual ultrasonic flaw detection way GB11345-1989

Product Structure



Product Details

Hi, firstly let us introduce our company as follows:

We, Henan Mine Crane Group, have 4,500 employees, include one experienced and professional team for oversea market. We cover an area of 1,620,000 square meters, hold capital of CNY1.18 Billion, have 430 branches around the world and serving over 6,000 Mid-high end customers.

We have more than 200 intermediate and senior engineers who focus on design and manufacture of our cranes, we could supply you all kinds of cranes, more than 110 types. In order to manufacture the best quality crane with high efficiency production, we have invested large number of high technique equipments(include more than 500sets of robots) which can independently accomplish all the processes, such as milling, digging, grinding, pulling, boring, rolling, drilling, punching, cutting, bending, welding, testing and heat treatment. Meanwhile, our factory have passed CE, EAC, SGS, and OHSAS & ISO9001:2000, ISO14001:1996 and ISO9001:2001, have the perfect quality-control system.

In 2020, we have sold 100,000 sets of crane and hoist, sales turnover valued CNY5.675 billion. We haave scored No. 1 on crane sale quantity for continuous 16 years in China local market. We have achieved the remarkable achievements in over 50 key industries such as aerospace, automobile and shipping, steel smelting, petrochemical, electronic information, electric power, water conservancy, railway and military industry. The developed intelligent storage crane, precise positioning crane, automatic container gantry crane, nuclear grade special crane, clean explosion-proof automatic crane, multi fulcrum flexible crane, simulated maritime rescue crane and other high-end products serve Baosteel, China Railway, MCC, CNNC(China National Nuclear Corporation), CASC(China Aerospace Science and Technology Corporation), and other large enterprises; also include oversea project such as Vietnam Yishan Iron and Steel Group, Pakistan Abass Steel Group, Kenya Railway gantry crane projects(Mombasa to Nairobi), Pakistan subway construction bridge cranes project etc, more than 120 countries.

Our Gov have arranged our Group organized and hold many times of International Exhibition Of Crane in China because of our high good influence, meanwhile, our crane have been used on satellite launching because our high technique, and newspaper, local TV, CCTV interviewed and report us many times too.

Quality Forges the Brand, Integrity Waves a bright future. We are trying to win the world with integrity and high quality, We sincerely hope to cooperate with all friends from the world and create brilliance together.

Company Position: The company is the largest industrial crane manufacturer in China, with the highest sales volume and market share in China market.