Henan Mine Crane · Complete Industrial Lifting Systems
Overhead Crane Systems
Engineered bridge-crane systems integrating the crane structure, hoist or trolley, runway interface, electrification, controls, safety functions, installation planning and acceptance documentation.
Henan Mine Crane configures single-girder, double-girder, top-running, underhung and process overhead crane systems for manufacturing, assembly, warehousing, maintenance, steel production, bulk handling and hazardous industrial environments. Capacity, span, lift, duty, building geometry and material flow are evaluated as one project basis.
SYSTEM TYPES
Top Running & Underhung
CONFIGURATION
Single or Double Girder
CONTROL OPTIONS
Pendant, Radio, Cabin & PLC
PROJECT BOUNDARY
Equipment to Commissioning
What Is an Overhead Crane System?
An overhead crane system is a coordinated material-handling installation that moves a suspended load vertically, laterally across a bridge and longitudinally along a runway. The term covers more than the visible bridge crane. It includes the hoist or trolley, bridge girders, end carriages, travel drives, runway interface, power supply, control equipment, protective devices and technical documents required for safe operation.
System performance is determined by the interaction of these elements. A correctly selected hoist cannot compensate for an undersized runway, insufficient hook height, unsuitable working class or poorly defined power arrangement. Equally, a strong bridge does not establish production capability unless travel speeds, attachment, controls and operating coverage match the material flow.
A complete project specification therefore begins with the maximum gross suspended load, load dimensions, handling route, lifts per hour, operating shifts, span, lifting height, headroom, building structure, environment and acceptance requirements. Rated capacity is only one input. Two cranes with the same tonnage can require different structures, mechanisms and project scopes when duty and operating conditions differ.
Standard workshop systems normally use an electric wire-rope hoist on a single girder. Higher capacities, wider spans, demanding service, improved hook height or process attachments can require a double-girder bridge with an engineered trolley. Underhung and freestanding systems solve building or floor-layout constraints, while metallurgical, grab, magnetic, explosion-proof and automated cranes address process-specific risks.
Complete Overhead Crane System Components
Every component belongs to a continuous load and control path. Procurement documents should identify the responsible party for each item instead of assuming that a quoted bridge crane automatically includes the runway, building steel, incoming power, installation or load test.
The bridge and hoist determine basic lifting motion, but runway geometry governs travel quality and wheel loading. Electrification powers the moving equipment. Controls coordinate motion, protection and operating modes. The below-hook device connects the crane to the actual load. Inspection and handover records establish the approved configuration for commissioning and future maintenance.
01 · Bridge Structure
One or two girders, end connections, end carriages, wheels, buffers and required platforms form the travelling bridge. Span, deflection, fatigue duty and wheel reactions control the structural design.
02 · Hoist or Trolley
Chain hoists support lighter localized handling; wire-rope hoists serve common industrial cranes; engineered winch trolleys support heavy, high-duty or process applications.
03 · Runway Interface
Rails, runway beams, brackets, columns, end stops and foundations transfer vertical and horizontal crane forces into the building or independent support structure.
04 · Power and Electrification
Incoming isolation, conductor bars, festoon cables, cable reels, trolley power and grounding are selected from travel length, speed, environment and maintenance access.
05 · Controls and Safety
Pendant, radio, cabin or PLC control works with brakes, limits, overload protection, emergency stop, alarms, anti-collision and application-specific interlocks.
06 · Load-Handling Device
Hooks, lifting beams, C-hooks, magnets, grabs, clamps and vacuum devices change suspended weight, geometry, electrical demand, control logic and operating risk.
Overhead Crane System Configurations
Single-Girder Top-Running System
An electric hoist travels below one bridge girder while end carriages run on rails above the runway. This is a cost-controlled starting point for general manufacturing, assembly, warehouse and maintenance service.
Double-Girder Top-Running System
A hoist trolley runs on or between two girders. The arrangement supports higher capacity, longer span, improved hook height, greater bridge stiffness, service platforms and demanding duty.
Single-Girder Underhung System
The bridge runs beneath suspended runway beams. It preserves floor space and can improve end approach where the roof or supporting structure is verified for crane reactions.
Multi-Support Underhung System
Several suspended runway lines support a long bridge across wide facilities. Henan Mine Crane product families include multi-support solutions for large industrial and aircraft-related buildings.
Freestanding Bridge Crane System
Independent columns and runway beams carry crane forces without relying on the existing building frame. Foundations, aisle layout, vehicle movement and future expansion control the layout.
Process and Automated System
Metallurgical, grab, magnetic, hazardous-area or PLC-controlled cranes integrate dedicated attachments, redundancy, sensing, interlocks, positioning and plant communication.
Henan Mine Crane single-girder product families cover capacities from 3.2 to 80 t and spans from 4 to 31.5 m in published configurations. The intelligent electric-hoist family covers 1–32 t, 7.5–31.5 m spans, 6–30 m lifting heights and A5–A6 working classes. Multi-support underhung models extend to published spans of 10–80 m. These values describe different product families rather than one universal specification; final parameters follow approved project data.
Selection Considerations
System selection should follow the production task and building constraints. The following inputs determine the bridge arrangement, hoist or trolley, travel mechanisms, runway reactions, control functions and commercial boundary.
01 · Load Definition
Record maximum payload, normal payload, center of gravity, dimensions, lifting points, rigging and every below-hook component included in gross suspended load.
02 · Coverage and Geometry
Define rail-center span, runway length, pickup and placement positions, end approach, side approach, hook path and restricted zones.
03 · Lift and Headroom
State lowest pickup, highest placement, rail elevation, roof obstructions, load height, rigging depth and required maintenance clearance.
04 · Duty and Production Cycle
Provide lifts per hour, load spectrum, full-load frequency, travel distances, operating shifts, annual hours and consequence of downtime.
05 · Runway and Building
Identify existing or new runway steel, support spacing, rail data, building reactions, floor or foundation condition and structural responsibility.
06 · Motion and Positioning
Specify hoist, trolley and bridge speeds, low-speed range, acceleration, VFD requirements, anti-sway, positioning accuracy and synchronized operation.
07 · Environment and Hazard
Declare temperature, dust, humidity, corrosion, heat, washdown, cleanroom level, gas or dust classification and other abnormal exposure.
08 · Delivery and Acceptance
Define destination, voltage, governing requirements, documentation language, inspection stages, installation scope, test weights and acceptance authority.
Overhead Crane Systems Compared
| System Configuration | Lifting Arrangement | Typical Application | Primary Advantage | Selection Condition |
|---|---|---|---|---|
| Single-girder top running | Electric wire-rope hoist below one girder | General workshop and warehouse handling | Lower self-weight, simpler structure and controlled acquisition cost | Moderate capacity, span and duty with suitable hook approach |
| Double-girder top running | Hoist trolley on or between two girders | Heavy loads, wider spans and demanding production | Higher stiffness, better hook height and service access | Additional structure and wheel loads are justified by operating duty |
| Single-girder underhung | Hoist below a bridge suspended from runway beams | Facilities requiring clear floor space and close end approach | No floor columns when the building can carry the runway | Roof and runway support are structurally verified |
| Freestanding bridge system | Top-running or underhung bridge on independent steelwork | Existing buildings without suitable crane support | Defined load path independent of the main building frame | Columns and foundations fit production aisles and site conditions |
| Workstation enclosed-track system | Light bridge and trolley on low-resistance enclosed track | Repetitive light-load assembly and ergonomic handling | Easy movement and localized process coverage | Capacity, span and duty remain within workstation-system limits |
| Process or automated system | Engineered trolley or hoist with specialized attachment and controls | Steel, foundry, bulk, waste, hazardous or automated production | Purpose-built productivity, safety and plant integration | Process data, risk controls and recovery modes are fully defined |
Configuration principle: the lowest-cost structure should only be selected after capacity, span, headroom, duty, building reactions and process risk have been satisfied. System suitability takes priority over nominal tonnage.
Technical Specification Framework
A comparable quotation requires one controlled data sheet. Each proposal should state the design basis, assumptions and exclusions so that differences in structure, duty, controls and project scope remain visible.
| Specification Item | Required Project Data | Engineering Basis | Procurement Control |
|---|---|---|---|
| Rated capacity | Maximum gross suspended load at the hook or attachment | Payload, rigging and below-hook device included | Capacity basis approved before design release |
| Crane configuration | Single or double girder; top running, underhung or freestanding | Selected from load, span, headroom, duty and support structure | General arrangement identifies the full load path |
| Span and travel | Rail-center span and total runway length | Pickup zones, placement zones and approaches defined | Building width is not substituted for crane span |
| Lifting height | Hook travel from lowest pickup to highest operating point | Load height and rigging depth included | Highest hook and lowest hook shown on drawing |
| Working class | Crane and mechanism classifications stated separately | Established from load spectrum and operating frequency | Capacity alone does not determine duty |
| Speeds | Hoist, trolley and bridge speeds with low-speed ranges | Acceleration and deceleration match load stability | Production cycle and positioning requirement verified |
| Control method | Pendant, radio, cabin, PLC or combined operating modes | Operating station, travel directions and fallback mode defined | Interface and responsibility matrix included |
| Power supply | Project voltage, frequency, phases and control voltage | Incoming point, conductor system and grounding identified | Site and crane electrical boundaries separated |
| Environment | Temperature, dust, humidity, corrosion, heat and hazard data | Enclosures, materials, coating and special protection selected | Generic indoor or outdoor labels are not sufficient |
| Documentation | Drawings, calculations, manuals, inspection and test records | Language, approval stages and handover format stated | Final configuration remains traceable after commissioning |
Runway, Building and Headroom Integration
The runway and supporting structure are part of the crane load path even when they are supplied by another contractor. Crane wheel loads, lateral forces, longitudinal forces, buffers, rail joints and conductor supports act on runway beams, brackets, columns and foundations. Approved reactions must reach the responsible structural engineer before building or runway fabrication is finalized.
Top-running cranes place wheels on rails above the runway beams. Underhung cranes suspend end carriages from compatible beam flanges. Freestanding systems transfer forces through independent columns into foundations or a verified floor structure. Each arrangement creates different alignment tolerances, support loads, erection sequences and maintenance access requirements.
Headroom must be checked on a dimensioned vertical section. Rail elevation, bridge depth, trolley or hoist geometry, highest hook position, load height, lifting attachment, roof bracing, services and maintenance-removal routes should appear together. A compact low-headroom hoist can recover usable lift, but the benefit should be measured against duty, accessibility and component standardization.
Existing runways require more than a visual confirmation. Rail gauge, straightness, elevation, joints, clips, end stops, beam condition, support connections and historical loading should be reviewed. A heavier replacement crane or a higher duty cycle can increase wheel reactions even when rated capacity remains unchanged.
Electrification, Controls and Safety Functions
Runway Power Supply
Insulated conductor bars suit long travel and regular operation; festoon systems suit defined cable-management layouts; cable reels solve selected travel and environmental conditions.
Motion Control
Contactors, soft starters or variable-frequency drives establish starting torque, acceleration, braking, low-speed positioning and mechanical stress on the crane and building.
Operating Stations
Pendant control provides direct local operation, radio control improves mobility and visibility, cabins serve selected process cranes, and PLC interfaces support automatic sequences.
Hoisting Protection
Overload limiting, upper and lower limits, service and holding brakes, rope guidance, hook safeguards and emergency stop are matched to the mechanism and risk assessment.
Travel Protection
End limits, buffers, rail sweeps, alarms and anti-collision functions reflect runway length, multiple-crane operation, restricted zones and plant traffic.
Automation and Recovery
Position feedback, anti-sway, load sensing, obstacle detection and plant communication require a defined safe state, manual recovery method and fault-diagnostic strategy.
Safety functions and compliance documents should follow the destination, application and contracted technical basis. Molten metal, magnets, grabs, hazardous areas and unattended operation require dedicated risk controls beyond those used on a conventional general-service hook crane.
Industrial Applications for Overhead Crane Systems
Manufacturing and Assembly
Moves raw material, machine components, fixtures and finished assemblies between machining, welding, inspection and dispatch stations. Positioning speed and hook approach often control productivity.
Warehouse and Logistics
Handles coils, plates, machinery and unit loads across storage bays. Attachment type, storage geometry, inventory logic and collision zones determine the system configuration.
Steel Mill and Foundry
Transfers ladles, billets, slabs, coils and hot material under high duty and elevated risk. Redundancy, heat protection, braking and process interlocks become central requirements.
Bulk and Waste Handling
Uses grab buckets for ore, coal, biomass, slag, aggregate or waste. Bulk density, grab volume, fill factor, cycle time and hopper geometry establish productive capacity.
Power and Maintenance
Supports turbine, generator, pump and transformer installation or overhaul. Infrequent operation can still require high reliability, precise slow speed and long-term maintainability.
Hazardous and Controlled Areas
Explosion-proof, cleanroom, insulated or corrosion-resistant systems use project-defined equipment protection, materials, enclosures and documentation for the declared environment.
Project Case: Multi-Model Overhead Crane System for Special Steel Production
A 3.2-million-ton premium special steel production base required an integrated crane fleet across steelmaking, refining, rolling and auxiliary operations. Henan Mine Crane delivered more than 30 core equipment units in one coordinated project package.
The reported equipment included 200 t foundry cranes, 200/50 t four-girder foundry cranes, 160/63 t cranes, 40+40 t cranes and overhead rotating electromagnetic-beam cranes. Foundry cranes served molten-metal operations, rotating magnetic systems handled directional steel transfer, and smaller cranes supported auxiliary production and maintenance.
The project demonstrates why an overhead crane system should be matched to process stages rather than standardized around one bridge design. Capacity, girder arrangement, trolley, attachment, working class, control method and safety functions changed with the handled material and production risk, while project engineering and delivery remained coordinated.
Engineering, Supply, Installation and Acceptance
A complete system purchase connects approved operating data to design, fabrication, inspection, packing, site execution and final handover. Drawings and reaction data should be approved before bridge or runway interfaces are released.
Manufacturing records can include material identification, welding documentation, dimensional checks, mechanism data, electrical diagrams, coating records and factory test results. Site records can include rail alignment, torque checks, control settings, functional tests, load-test results and commissioning sign-off.
| Scope Package | Typical Content | Required Definition | Commercial Control |
|---|---|---|---|
| Crane equipment | Bridge girders, end carriages, wheels, hoist or trolley, travel drives, buffers and required access items | Approved capacity, span, lift, duty and arrangement | Structural fasteners and assembly items listed |
| Electrical and controls | Panels, pendant or radio, VFDs, limits, alarms, crane wiring and moving electrification | Voltage, frequency, control method and enclosure rating | Incoming supply and runway feed assigned |
| Runway and supports | Rails, clips, beams, brackets, columns, stops and foundations where contracted | Travel length, rail section, support spacing and reactions | Building and civil responsibility stated |
| Documentation and tests | Drawings, manuals, certificates, inspection records, electrical diagrams and packing documents | Language, approval stages and witness points | Factory and site acceptance criteria agreed |
| Logistics and site work | Export packing, freight, unloading, erection, wiring, alignment and commissioning as contracted | Incoterm, access, assembly area, labor and equipment | Taxes, permits and local resources allocated |
| Final acceptance | Functional checks, protective-device settings, rated-load test and operator familiarization | Test procedure, test weights and acceptance authority | Handover package and open items recorded |
Overhead Crane System Price and Total Project Cost
System pricing changes with capacity, span, lift, duty, bridge arrangement, hoist or trolley, runway length, electrification, controls, building work, logistics and site service. Public international market positions support preliminary budgeting, but a binding proposal requires approved technical data and a defined delivery boundary.
| System Budget Position | Indicative Market Range | Typical Basis | Items Requiring Confirmation |
|---|---|---|---|
| Light workstation crane system | Approximately US$13,000–20,000 | Short-span enclosed-track or ergonomic handling system in published retail configurations | Capacity, bridge count, runway length, support steel, hoist, freight and installation |
| 5 ton single-girder bridge equipment | Approximately US$40,000 for a base system up to about 40 ft span in a published North American benchmark | Bridge, trolley or hoist and standard equipment package | Runway, building steel, electrical feed, freight, erection and load testing |
| 5 ton packaged crane with hoist | Approximately US$52,000–55,500 in current public retail configurations | Specified single-girder bridge and electric hoist package | Exact span, runway, shipping, installation and site electrical work |
| 5 ton installed single-girder project | Approximately US$65,000 in a representative North American installation position | Base crane plus normal installation work | Runway condition, access, local labor, permits, structural work and commissioning |
| Double-girder bridge crane equipment | Approximately US$65,000–100,000 for common published configurations | Higher-duty bridge and trolley package | Capacity, span, platforms, runway reactions, installation and special controls |
| Heavy, automated or process crane system | Project quotation; frequently above US$100,000 | Custom structure, attachment, redundancy, automation or severe-duty protection | Process cycle, hazard controls, plant integration, documentation and site acceptance |
Commercial comparison: capacity, span, lift, working class, speeds, controls, runway scope, electrification, documentation, freight, installation and testing must be normalized before prices are compared. An equipment-only figure should not be compared with an installed-system quotation.
Indicative ranges are capital-planning positions rather than fixed Henan Mine Crane quotations. Currency, destination, material cost and local site conditions can materially change the final contract value.
Quote Information and Frequently Asked Questions
A complete request for quotation should contain enough information to select the system and divide project responsibility. The minimum data set includes maximum gross suspended load, normal load spectrum, load dimensions, attachment, span, runway length, lifting height, rail elevation, duty cycle, speeds, controls, environment, power supply, building information, destination, installation boundary and acceptance requirements.
Load and Process Data
Maximum and normal loads, dimensions, center of gravity, lifting points, attachment, lifts per hour, travel route and production consequence.
Building and Coverage Data
Span, runway length, rail elevation, headroom, columns, roof obstructions, existing runway information and required hook approaches.
Operating and Control Data
Working shifts, load spectrum, speeds, low-speed positioning, pendant, radio, cabin, automation, anti-sway and plant interfaces.
Commercial and Site Data
Destination, Incoterm, voltage, local requirements, inspection authority, installation resources, test weights and required commissioning scope.
What is included in a complete overhead crane system?
A complete contracted system can include bridge structure, hoist or trolley, end carriages, travel drives, runway electrification, controls, protective devices, rails or runway steel, documentation, installation and testing. The exact boundary must be listed in the quotation.
Does an overhead crane price include the runway?
Runway beams, rails, columns, brackets and foundations are separate unless expressly included. Existing runway suitability also requires structural and alignment verification.
When is a double-girder system required?
Double-girder construction becomes relevant when capacity, span, duty, hook height, bridge stiffness, trolley arrangement, maintenance access or process equipment exceeds a suitable single-girder basis.
Can an overhead crane be installed in an existing building?
Installation is possible when the building and runway can safely accept crane reactions and required clearances. Otherwise, reinforcement or an independent freestanding runway may be required.
How is the required working class selected?
Working class follows load spectrum, operating frequency, travel distances, shifts, annual hours and process consequence. Rated capacity alone does not establish mechanism or structural duty.
What controls are available?
Common options include pendant, radio remote and cabin control. Variable-frequency drives, PLC automation, anti-sway, positioning and plant communication are available when justified by the operating process.
How long does installation take?
Duration depends on bridge size, runway readiness, building access, assembly method, electrical scope, local labor, permits and testing. A site-readiness review is required before a dependable schedule is issued.
Which documents support final acceptance?
The handover package can include approved drawings, reaction data, electrical diagrams, manuals, inspection records, component data, test results, commissioning settings and recommended spare-parts schedules.
Related Overhead Crane Products
Product selection follows the approved load, duty, building and process requirements. Each crane is configured within one complete system boundary.
Single-Girder Overhead Crane
Cost-controlled electric-hoist bridge for general manufacturing, assembly, warehouse and maintenance service.
Double-Girder Overhead Crane
Two-girder platform for higher capacity, longer span, demanding duty and process equipment.
Underhung Overhead Crane
Suspended bridge arrangement for compatible runway beams and verified building support.
Explosion-Proof Overhead Crane
Dedicated lifting system configured for a formally defined hazardous gas or dust area.
Metallurgical Overhead Crane
Heavy-duty process crane developed for hot-metal and severe metallurgical service.
Intelligent Grab Overhead Crane
Grab-bucket and intelligent-control configuration for repetitive bulk-material handling.
Request an Overhead Crane System Quote
Submit the maximum gross load, span, lifting height, runway length, duty cycle, building information, control requirements, power supply, operating environment, destination and required project boundary. Henan Mine Crane will prepare a configuration-based technical and commercial proposal.