Description
Double Hoist Overhead Crane is a kind of overhead crane equipped with two sets of independent hoisting mechanisms (i.e, double hoist). It consists of main girder, an end girder, two sets of electric hoists (or winch systems), a large trolley operating mechanism, a small trolley operating mechanism, and a control system. The two sets of electric hoists can be installed on the same main girder (parallel or staggered layout) or separately arranged in the double main girder structure to realize cooperative or independent operation.
Types of Double Hoist Overhead Crane
Double Hoist Overhead Crane can be divided into two main types, Single Girder and Double Girder, according to the main girder structure. They are significantly different in terms of structural design, load carrying capacity, application scenarios, and so on.
Single Girder Double Hoist Overhead Crane
Single girder double hoist overhead crane adopts one box girder or I-beam as the main load carrying structure, and two sets of electric hoists (usually wire rope or chain hoists) are mounted on the same main girder. The load carrying capacity is usually 5~20 tons (single hoist) or 10~32 tons (double hoist joint lifting) of load, and the span range is 5~22 meters.
Double Girder Double Hoist Crane
The Double Girder Double Hoist Crane utilizes two box girders or truss girders to provide greater rigidity and load carrying capacity. It is suitable for heavy loads from 20~500 tons or even higher (e.g., metallurgy, shipbuilding industry). The span range is 10~35 meters, suitable for large plants. Common types are LH double girder overhead crane and the NLH European double girder overhead crane.
Specifications
| Capacity(ton) | 5 | 10 | 16/3 | 20/5 | 32/5 |
| Span(m) | 10.5-31.5 | ||||
| Lifting Height(m) | 6/9/12/18/Other height | ||||
| Trolley Traveling Speed(m/min) | 20 | ||||
| Model of Electric Hoist | CD1(MD1) | ||||
| Cabin Traveling Speed(m/min) | 20 | ||||
| Crane Traveling Speed-Ground Control(m/min) | 20 | ||||
| Working Class(FEM/ISO) | A3/A4 | ||||
| Power Source | 3 Phase A.C.50HZ 380V | ||||
Double Girder Double Hoist overhead crane Specificationsns
| Lifting Capacity | T | 5 | 10 | 16/3.2 | 20/5 | 32/5 | 50/10 | ||
| Span | m | 10.5-31.5 | |||||||
| Speed | Main Hook Lifting | A5 | m/min | 11.3 | 8.5 | 7.9 | 7.2 | 7.5 | 5.9 |
| A6 | 15.6 | 13.3 | 13 | 12.3 | 9.5 | 7.8 | |||
| Aux. Hook Lifting | 16.7 | 19.5 | 19.5 | 10.4 | |||||
| Traveling with Crab | 37.2 | 43.8 | 44.6 | 44.6 | 42.4 | 38.5 | |||
| Cabin, remote control; ground handle | A5 | 89.8/91.8 | 90.7/91.9 | 84.7/87.6 | 84.7/87.6 | 87/74.2 | 74.6 | ||
| /84.7 | |||||||||
| A6 | 92.7/93.7 | 115.6/116 | 112.5/101.4 | 112.5/101.4 | 101.4/101.8 | 75/76.6 | |||
| /112.5 | |||||||||
| Operational Model | Cabin, remote control, ground handle | ||||||||
| Working Duty | A5,A6 | ||||||||
| Power Supply | Three-phase A.C. 380V, 50Hz or customized | ||||||||
Advantages
When purchasing a marine travel lift for sale, it is recommended to conduct a professional evaluation in the following four areas:
Dual- load cooperative operation
Simultaneous lifting of two heavy loads for scenarios requiring balanced or synchronized handling , such as long, large workpieces.
Independent control
Two hoists can be operated independently of each other for greater operational flexibility, e.g. for transferring materials between different work stations.
Load distribution
Sharing the weight of oversized or asymmetrical loads through joint lifting, avoiding single-point overload.
High-precision positioning
Some models support synchronized fine-tuning to meet the needs of precision assembly, e.g. wind turbine blade installation.
Cases
