National Hotline
0373-8887266
EN

Double hoist double hook overhead crane

A double-hoist bridge crane is a type of overhead crane equipped with two independent hoisting mechanisms (i.e., two hoists). It consists of a main girder, end carriages, two electric hoists (or winch systems), a crane travel mechanism, a trolley travel mechanism, and a control system. The two electric hoists can be installed on the same main girder (arranged in parallel or staggered) or separately on a twin-girder structure, enabling either coordinated or independent operation.
Specifications
  • Product type: LH / NLH models
  • Lifting capacity: 5-500t
  • Span range: 10.5 ~ 31.5m
双吊桥式起重机
Introduction

The double-hoist double-girder overhead crane is an overhead crane equipped with two independent hoisting mechanisms (i.e., double hoists). It consists of a main girder, end carriages, two electric hoists (or winch systems), a cross-travel mechanism for the trolley, a long-travel mechanism for the crane, a small trolley travel mechanism, and a control system. The two electric hoists can be installed on the same main girder (arranged in parallel or staggered) or separately within a double-girder structure, enabling coordinated or independent operation.

Advantages & Features

Dual-Load Collaborative Operation
Lifts two heavy objects simultaneously, suitable for situations requiring balanced or synchronized handling, such as long and large workpieces.
Independent Control
The two hoists can operate independently of each other for greater operational flexibility, such as transferring materials between different workstations.
Load Distribution
Shares the weight of超大 or asymmetrical loads through combined lifting, avoiding single-point overload.
High-Precision Positioning
Some models support synchronized fine-tuning to meet precision assembly needs, such as wind turbine blade installation.

Product Types

The double-hoist overhead crane can be divided into two main types based on the main girder structure: single-girder and double-girder. They have significant differences in structural design, load capacity, and application scenarios.

1. Single-Girder Double-Hoist Overhead Crane

The single-girder double-hoist overhead crane uses one box girder or I-beam as the main load-bearing structure, with two electric hoists (usually wire rope or chain hoists) installed on the same main girder. The load capacity is typically 5~20 tons (single hoist) or 10~32 tons (dual-hoist combined lifting), with a span range of 5~22 meters.

Advantages & Features

  • Lower Cost: Simple structure, lower manufacturing and maintenance costs compared to double-girder structures.
  • Light Deadweight: Suitable for situations with limited plant height or weak load-bearing capacity.
  • Easy Installation: Suitable for small to medium-sized workshops or light material handling.
  • High Flexibility: The two hoists can work independently or collaboratively to adapt to different working conditions.

Applications

  • Light Manufacturing Industry: Such as auto parts, metal processing, small machinery assembly.
  • Warehousing and Logistics: Handling packaging boxes, pallets, and light steel structural parts.
  • Maintenance Workshops: Situations requiring dual lifting points, such as equipment maintenance, mold changing.

2. Double-Girder Double-Hoist Crane

The double-girder double-hoist crane utilizes two box girders or truss girders to provide greater rigidity and load capacity. It is suitable for heavy loads ranging from 20 to 500 tons or even higher (e.g., in metallurgy, shipbuilding industries). The span range is 10~35 meters, suitable for large plants. Common types include the LH double-girder overhead crane and the NLH European-type double-girder overhead crane.

ModelLH TypeNLH Type (European-style)
Applicable ScenariosLight frequent handling (machining, assembly lines, small warehouses)Medium and heavy precision operations (steel processing, heavy installation, logistics warehousing)
Lifting Capacity1-20t5-32t
Hoisting MechanismCD1/MD wire rope electric hoistNew Chinese style electric hoist (dual-speed/frequency conversion)
Control ModeConventional controlFrequency conversion / Remote control / Automation control
Operational PrecisionGeneralHigh (anti-sway, precise positioning)
Structural FeaturesLow headroom, low costHigh-strength design, long service life
CostEconomical and practicalUltra-high cost performance

Advantages & Features

  • Higher Stability: Double-girder structure, better torsional resistance, suitable for precision lifting (e.g., wind turbine blade installation).
  • Stronger Expandability: Magnetic spreaders, grabs, C-hooks, and other specialized spreaders can be integrated.

Applications

  • Heavy Industry: Steel plants (ladle handling), shipbuilding (section lifting), mines (large equipment installation).
  • Energy Industry: Wind turbines, hydraulic turbines, nuclear power pressure vessel lifting.
  • Large-Scale Logistics: Port containers, heavy machinery transport.

Brand Advantages
Strong capabilities
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.
Related Products
QC type electromagnetic overhead crane

        The electromagnetic overhead crane is a double-girder bridge crane equipped with a detachable electromagnetic lifting magnet, using electromagnetic forc…

View More
QD double-girder overhead crane with hook

The QD double-girder overhead crane with hook is a heavy-duty industrial overhead crane featuring a double main girder structure and equipped with a hook as the lifting attachment,…

View More
Online Message
Please describe your requirements in the following areas:
  • What type of crane product do you need?
  • What is the maximum lifting capacity (tons) required for your project?
  • Can you specify the required lifting height (in meters)?
  • Can you provide detailed information about the work environment, such as ground conditions, space constraints, and any obstacles?
  • What is the expected frequency of use and project duration?
Contact Form

Get Online Support

Contact Support Online
Top