QB type explosion-proof electric hoist double-girder crane
Our explosion-proof double-girder crane is a series of explosion-proof crane products developed using the New Chinese style trolley-type explosion-proof electric hoist as the hoisting mechanism. It features superior performance, safety and reliability, energy efficiency, environmental friendliness, and low-noise operation. It is suitable for lifting and handling objects in locations with explosive gas atmospheres, such as workshops, warehouses, and power stations.
The QB explosion-proof overhead crane is a type of lifting equipment specifically designed for environments with flammable explosive gases or dust. Its main components adopt explosion-proof structures and materials, complying with strict national and industry requirements for explosion-proof levels.
The explosion-proof performance of all motors and electrical components of the QB type explosion-proof hook bridge crane complies with GB3836.2-2000 “Electrical apparatus for explosive gas atmospheres – Part 2: Flameproof enclosure “d”,” and the overall performance complies with the provisions of JB/T5897-2006 “Explosion-proof overhead cranes”. It has been inspected and approved by the national designated explosion-proof product inspection unit and has obtained the “Explosion-proof Certificate”. The explosion-proof markings are ExdⅡBT4 and ExdⅡCT4 respectively.
Components
Main Girder and End Carriage: Double-girder structure, welded with high-quality steel, optional anti-corrosion coating treatment;
Explosion-proof Electric Hoist or Hoisting Mechanism: Core components comply with explosion-proof specifications, lifting capacity from 5 to over 100 tons;
Travel Mechanism: Includes explosion-proof drive motor, explosion-proof brake, reducer;
Electrical Control System: Explosion-proof electrical control box, cables, explosion-proof switches, explosion-proof lighting system;
Safety System: Explosion-proof limiter, anti-collision device, load limiter, etc. Selection of Explosion-proof Electric Hoist Type
Weihua can recommend the most suitable type of explosion-proof electric hoist based on the customer’s actual application environment, helping your enterprise improve operational efficiency and maintenance convenience.
Selection of Explosion-proof Electric Hoist Type
Weihua can recommend a suitable type of explosion-proof electric hoist based on the customer’s actual application environment, helping your enterprise improve operational efficiency and maintenance convenience.
Explosion-proof Wire Rope Electric HoistLow Headroom Explosion-proof Electric HoistNew Chinese Style Electric Hoist
Explosion-proof Wire Rope Electric Hoist: Uses high-strength steel wire rope, good stability, durable, with two-speed switching function. During lifting, fast and slow modes can be switched as needed, suitable for precise positioning and flexible lifting in application scenarios with high requirements, such as precision equipment installation and handling of easily swaying materials.
Low Headroom Explosion-proof Electric Hoist: Specifically designed for workshops with limited lifting space or work areas with restricted structural height. Compact structure effectively reduces the overall height of the machine and improves lifting height utilization. Suitable for special environments such as cleanrooms, laboratories, and underground pipeline corridors.
New Chinese Style Explosion-proof Electric Hoist: Adopts modular design, featuring intelligent monitoring, variable frequency drive, and automatic fault diagnosis. This hoist has the advantages of high protection level, low noise, and long service life, widely used in heavy-duty, high-frequency operations or smart factory scenarios.
Features & Advantages
Explosion-proof Design
Including motors, electrical control systems, such as brakes, couplings, and operating devices, all adopt explosion-proof treatment, complying with ExdIBT4 grade standards and above.
Dust and Gas Protection
Dust explosion-proof products are suitable for various combustible dusts and T4 requirement areas, effectively preventing dust and harmful gases from entering the crane interior and affecting normal equipment operation.
Safe and Reliable
Equipped with explosion-proof limit switches, explosion-proof cables, explosion-proof lights, and explosion-proof operating button boxes, ensuring absolute safety in the operating environment.
High Stability
The double main girder structure improves load capacity and structural strength, meeting the needs of medium to heavy lifting conditions.
Multiple Control Options
Can be equipped with cabin control, pendant control, or explosion-proof wireless remote control, adapting to different operating scenarios.
Smooth Operation
Adopts low-noise travel mechanism, with smooth start and braking, reducing the risk of explosion.
Applications
The QB explosion-proof overhead crane has excellent explosion-proof performance and reliability, making it an ideal solution for material handling in hazardous areas. It is widely used in various industrial environments requiring high safety levels. Below are its typical application industries and scenarios:
Oil Refineries: Used for lifting crude oil storage tanks and refining equipment.
Chemical Production Workshops: Handling containers and equipment with flammable gases and chemicals.
Natural Gas Stations and Filling Stations: Pressure vessel or pipeline installation operations.
Pharmaceutical Industry: Used in cleanrooms where dust or organic solvents are present.
Military and Ammunition Warehouses: High-risk material handling environments requiring strict explosion-proof requirements.
A leading enterprise in China's crane industry, with an annual production capacity exceeding 100,000 sets of lifting equipment. Its smart factory ranks among the industry's top in scale and production capacity. In 2023, order volume surpassed 4 billion yuan, with its market coverage and delivery capabilities widely recognized.
Rich experience
With over six decades of deep expertise in the lifting equipment sector, our service network spans more than 170 countries worldwide. Having completed over 500,000 projects across diverse complex industrial scenarios, we have accumulated extensive application experience and solutions.
Qualifications and Honors
The company operates a National-level Enterprise Technology Center and holds over 1,800 authorized patents. It has received 135 provincial-level and higher science and technology awards, led or participated in the formulation of multiple international/national standards, and earned certifications including the National Manufacturing Single Champion title.
Quality Assurance
Strictly implementing the ISO international quality system, with automation rates exceeding 95% in critical processes. Pioneering the “New Chinese-style” structural optimization technology, significantly reducing equipment weight and energy consumption. Rigorous quality control throughout the entire production process ensures safety and reliability.
Technological Innovation
Annual R&D investment accounts for 4%-6% of revenue, with an academician-led technical team of over 1,200 members. Breakthroughs in key bottlenecks such as millimeter-level anti-sway technology (≤2mm) continuously drive the iteration of intelligent, lightweight, and low-carbon technologies.
After-sales Service
With over 300 service centers worldwide, we guarantee 24-hour rapid response. Equipped with the “Crane Butler” intelligent operation and maintenance system, we provide remote diagnostics and preventive maintenance, ensuring full lifecycle service support for your operations.
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