Henan Mine Crane · Workshop and Industrial Lifting
Overhead Bridge Crane
An overhead bridge crane moves a suspended load vertically and across a working bay. A hoist or trolley travels along the bridge, while the bridge runs on elevated runways to serve production stations, storage areas and loading positions.
Henan Mine Crane manufactures single-girder, double-girder and underhung overhead bridge cranes for industrial material handling. Configure the crane around the load, required hook coverage, building structure and operating duty, with the equipment and installation interfaces defined in your quotation.
BRIDGE DESIGN
Single or Double Girder
RUNWAY ARRANGEMENT
Top Running or Underhung
LIFTING EQUIPMENT
Hoist or Trolley to Suit the Task
PROJECT INTERFACES
Load, Coverage, Structure and Power
Overhead Bridge Cranes for Workshops and Warehouses
Overhead crane and bridge crane are common names for this arrangement. Electrically powered travelling models are also called EOT cranes. The practical selection starts with the material flow and the space the hook must reach.
Connect Production Stations
Transfer components between fabrication, machining and assembly positions within one crane bay. Include the load orientation and lifting attachment required at each station.
Serve Storage and Loading Areas
Reach designated storage lanes and loading positions from above. Check obstructions, vehicle access and the available hook approach at the ends of the runway.
Handle Maintenance Lifts
Lift equipment clear of its mounting and move it to a service area. Allow enough hook height for the lifting gear and enough horizontal clearance for the complete component.
The load path remains within the crane’s defined coverage. Supporting columns, runway steelwork, overhead services and maintenance access still need to be accommodated in the facility layout.
Overhead Bridge Crane Technical Specifications
The references below correspond to the linked Henan Mine Crane product tables. They help shortlist an arrangement; the final project specification also defines duty, speed, hook approaches and structural reactions.
| Product Reference | Rated Capacity | Span | Lifting Height |
|---|---|---|---|
| Single-Girder Bridge Crane: Selected Examples | 5 t and 10 t | 7.5–28.5 m, listed spans | 6, 9, 12, 18, 24 or 30 m |
| LH Double-Girder Electric-Hoist Bridge Crane | 3–32 t | 7.5–31.5 m | 6–30 m |
| Single-Girder Suspended Bridge Crane | 1–10 t | 7.5–28.5 m | 6–20 m |
All t values here are metric tonnes. If your project uses US short tons, identify that unit in the enquiry. Confirm the complete load, span and lifting-height combination for the selected model; maximum catalogue values are not automatically available together.
Additional Technical Inputs
- Maximum and typical cargo weights, load dimensions, centre of gravity and lifting gear.
- Runway length and elevation, highest and lowest required hook positions, and coverage at each workstation.
- Lifts per hour, load distribution, operating shifts, travel distances and positioning needs.
- Supply voltage, frequency and phases; control method; environment and required design standard.
- Wheel loads, wheel spacing, runway interfaces, access platforms and agreed installation scope.
Selection Considerations
01 / LOAD
Start with the Lifted Load
Describe the cargo and the slings, lifting beams, grabs or other attachments. Their weights and geometry affect the required rating, hook height and usable payload.
02 / COVERAGE
Map the Working Area
Mark every pickup and placement point on the building plan. Include machine enclosures, doors, stored goods and services that could restrict the load or hook path.
03 / OPERATION
Match the Production Duty
Separate occasional maintenance lifting from repetitive production handling. Load spectrum, operating time and travel distances help determine the crane and mechanism duties.
04 / INSTALLED SCOPE
Review the Complete Installation
Compare the crane with its runway, supporting structure, power supply and service access. A lower equipment price can come with a different building or installation requirement.
Overhead Bridge Crane Compared with Other Industrial Crane Configurations
Girder count and runway arrangement are separate choices. A single-girder crane can have a top-running bridge with an under-running hoist; the position of that hoist does not classify the bridge as underhung.
| Configuration | Structural Arrangement | Selection Trade-Off |
|---|---|---|
| Single-Girder Overhead Bridge Crane | One main girder, commonly with a travelling hoist below the beam. | A compact arrangement for general handling. Compare hook height, side approaches, duty and total installed cost. |
| Double-Girder Overhead Bridge Crane | Two main girders carrying the selected trolley and lifting mechanism. | Allows different trolley and hook arrangements. Review crane height, runway loading and maintenance access for the proposed layout. |
| Underhung Overhead Bridge Crane | The bridge travels on the lower flanges of suitable elevated runway beams. | Useful where the building supports a suspended runway layout. Flange loading, connections and supporting steelwork require assessment. |
| Multi-Support Underhung Bridge Crane | A suspended bridge uses multiple runway supports across the working area. | Consider for an engineered multi-rail facility. Coordinate support locations, alignment and the distribution of loads. |
| Gantry Crane | Legs carry the bridge above ground-level runways or a specified travel system. | An alternative where elevated runways are unsuitable. Account for leg clearance, travel lanes, ground conditions and foundations. |
For a top-running overhead bridge crane, the end carriages run on rails above the runway beams. Those runways may be carried by building columns or by an independent engineered support structure.
Hook Coverage, Headroom and Load Clearance
Span Is Not Hook Coverage
Span is based on the runway centreline spacing. Side and end approaches, together with any engineered overhang, determine where the hook can travel. Check the resulting working area against the layout.
Lifting Height Is Not Building Height
Determine the required highest hook position from the load, lifting gear and obstacle clearance. Then check the complete crane envelope against roof members, lighting, ductwork and maintenance space.
The Load Needs Clearance Too
A reachable hook position does not guarantee that a long beam or bulky machine can pass through the same area. Check the suspended load’s dimensions and intended orientation along the full route.
For restricted headroom, compare a low-headroom hoist and alternative bridge layouts on the same building cross-section. The useful result is the achievable hook level with the required clearances and access.
Runway Loads and Building Support
Runway selection is part of the crane installation. Crane deadweight, trolley position, lifted load and the agreed design load combinations influence the forces transferred to the building or independent supports.
New Building
Coordinate the crane drawing with the structural design before fixing runway elevations and column positions. Include power routes, end clearances and access to the lifting and travel equipment.
Existing Building
Survey the rails, runway beams, connections and supporting structure. Use the proposed wheel loads, wheel spacing and horizontal reactions for the structural review.
Replacement Crane
Compare the actual interfaces of the old and proposed cranes. The same rated capacity can come with different crane weight, wheelbase, loading, hook approaches and electrical demand.
Define who supplies the runway beams, rails, columns, brackets and foundations. The crane quotation and the building design should use the same approved installation data.
Hoists, Trolleys and Operating Duty
Choose the lifting mechanism around the load and work cycle. A double-girder structure does not by itself establish heavy-duty or continuous-service capability; both the crane and its individual mechanisms need suitable classifications.
Hoist or Trolley Arrangement
Compare the selected hoist layout, lifting height, hook block, maintenance access and available speeds. The arrangement also affects the hook approaches and structural loads.
Main, Auxiliary or Dual Hoists
Identify the task for each hook and any permitted combined operation. Ratings, hook separation, shared loads and control coordination must be defined for multi-hook handling.
Operating Cycle
Record the frequency of near-rated lifts, mechanism running time, starts and travel distances. These inputs help distinguish intermittent workshop use from repetitive production service.
For long components, review the double-trolley electric-hoist bridge crane arrangement. For controlled speed and acceleration, compare the frequency-conversion electric-hoist overhead crane. Specify the required performance for each motion.
Controls, Power Supply and Motion Performance
Pendant, Radio or Cabin Control
Select around operator visibility, walking routes and the handling task. Multiple control stations require a defined selection priority and response to a loss of command signal.
Power Feed and Distribution
Confirm site voltage, frequency, phases and the connection point. Distinguish the runway power system from the cable or conductor arrangement supplying the moving hoist or trolley.
Speed and Positioning
Specify hoisting, trolley travel and bridge travel separately. Include acceleration, stopping and placement needs; maximum travel speed alone does not define the handling cycle.
Anti-sway, automatic positioning, load monitoring and production interfaces are functions to specify individually. Agree their operating conditions and acceptance method before they become part of the supply scope.
Attachments, Special Environments and Safety
A general workshop hook crane is only one configuration. The material and environment can change the lifting attachment, mechanical design, controls and protection requirements:
- Grab overhead cranes handle suitable bulk materials. Supply material density, condition, required throughput and discharge height so grab payload and crane duty can be selected together.
- Explosion-proof overhead cranes require the site’s hazardous-area classification and relevant gas or dust information. Equipment protection and documentation must match that application.
- Metallurgical bridge cranes address defined hot-material and production duties. Describe the process, temperature exposure and consequences of a lifting interruption.
- Outdoor or corrosive locations require review of weather exposure, coatings, electrical protection, runway conditions and relevant wind requirements.
Protection and Safety Functions
Define overload protection, hoisting and travel limits, braking, emergency stops and electrical protections for the selected crane. Shared runways need an assessment of crane separation and collision prevention. Additional brakes, monitoring or redundancy arrangements depend on the intended duty and risk assessment.
Manufacturing and Inspection Documentation
Henan Mine Crane manufactures overhead lifting equipment for industrial production and material handling. View the company’s manufacturing workshops for published factory photographs.
The order documentation should connect the selected crane configuration with the equipment supplied. Agree the following requirements before manufacture:
- General arrangement drawing showing rated capacity, span, hook limits, crane dimensions and runway interfaces.
- Hoist, motor, drive and control schedule with electrical diagrams and protection functions.
- Material and fabrication inspection scope, including specified weld examination and dimensional checks.
- Factory and site test requirements, acceptance records, manuals and a parts list.
Define witness points and the records needed at handover. Any required conformity documentation must apply to the ordered equipment and its destination.
Installation, Commissioning and Maintenance
Prepare the Installation
Coordinate delivery with runway readiness, power availability, assembly space and access for lifting equipment. Identify the party responsible for unloading, erection and electrical connections.
Agree Acceptance
Define alignment checks, functional tests, protection checks and the applicable load-test scope. Allocate responsibility for test loads, witnessing, records and operator familiarisation.
Plan Maintenance Access
Provide safe access and isolation arrangements for hoists, ropes, brakes, wheels and electrical equipment. Follow the supplied manuals and actual duty when setting inspection and lubrication intervals.
For a production-critical crane, identify essential spares and the space needed to remove components before operation begins. Maintenance access can affect the building layout as well as the crane arrangement.
Overhead Bridge Crane Price and Supply Scope
An overhead bridge crane price reflects the load, span, lift, duty, hoist arrangement, controls and supply boundaries. Compare quotations for the same working envelope and operating requirement.
- Crane equipment: bridge, end carriages, hoist or trolley, controls and agreed protection functions.
- Runway and power: beams, rails, support steelwork and electrical distribution, as specified.
- Project services: packing, transport, unloading, installation, commissioning and training scope.
- Handover requirements: inspection records, manuals, spares, delivery terms and service arrangements.
When comparing an overhead bridge crane for sale with a hoist or crane kit, check exactly which structures and services are included. Request the selected configuration, exclusions and delivery schedule in the project quotation.
Overhead Bridge Crane FAQ
Request An Overhead Bridge Crane Quote
Send Henan Mine Crane your load requirement, span, lifting height and operating cycle. Add the building layout, site power supply, installation country and required supply scope so the proposal can address the crane, its working area and its installation interfaces.