Overhead Crane With Winch

Types of Overhead Cranes with Winches:

Single Girder Crane – Lighter-duty, cost-effective, suitable for lower capacities (up to ~20 tons).

Double Girder Crane – Heavy-duty, higher lifting heights, and greater capacity (up to several hundred tons).

Gantry Crane – Similar to an overhead crane but supported by legs (used where runway beams are not feasible).

Jib Crane – Smaller, rotating crane with a winch, ideal for localized lifting.

 

Winch Options:

Electric Wire Rope Winch – Common for heavy-duty lifting.

Chain Hoist – Manual or electric, used for lighter loads.

Pneumatic or Hydraulic Winch – Used in hazardous environments (explosive or corrosive areas).

 

Benefits:

Efficient Material Handling – Reduces manual labor and speeds up operations.

Precision Control – Allows accurate load positioning.

Safety – Minimizes risks associated with heavy lifting.

Customizable – Can be tailored to specific load capacities and workspace dimensions.

 

An overhead crane with a winch consists of several key components that work together to lift, move, and position heavy loads safely and efficiently. Below is a detailed breakdown of the main components:

 

1. Bridge (Main Girder)

The primary horizontal beam that spans the work area.

Single girder: One beam (lighter loads, cost-effective).

Double girder: Two beams (higher capacity, greater stability).

Moves along the runway rails via end trucks.

 

2. Runway (Runway Beams & Rails)

Supports the crane and allows the bridge to travel.

Top-running: Rails mounted on elevated beams (higher load capacity).

Under-running (underhung): Rails suspended from ceiling structures (space-saving).

3. End Trucks (End Carriages)

Located at each end of the bridge, housing the wheels for movement.

Includes wheels, motors, and brakes for smooth travel along the runway.

4. Hoist/Winch (Lifting Mechanism)

The core lifting component, which can be:

Electric wire rope winch (common for heavy loads).

Chain hoist (manual or electric, for lighter loads).

Pneumatic or hydraulic winch (for hazardous environments).

Includes:

Motor (powers the lifting operation).

Drum or sheave (holds the wire rope/chain).

Brake (prevents load slippage).

Hook block (attaches to the load).

5. Trolley

The assembly that moves the hoist along the bridge girder.

Can be motorized (for powered movement) or manual push-type.

6. Controls

Pendant control (hanging wired remote).

Radio remote control (wireless operation).

Cabin control (operator sits in a cab for large cranes).

7. Wire Rope / Chain

Lifting medium that connects the winch to the load hook.

Wire rope (higher strength, durable for heavy loads).

Chain (used in chain hoists, suitable for moderate loads).

8. Hook Block & Load Hook

The attachment point for securing loads.

May include a safety latch to prevent slipping.

9. Braking System

Mechanical brakes (hold the load when stopped).

Regenerative braking (in electric hoists for smooth stops).

10. Limit Switches & Safety Devices

Upper/Lower limit switches (prevent over-hoisting or over-lowering).

Overload protection (prevents lifting beyond capacity).

Emergency stop (E-stop) button.

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11. Festoon System / Cable Reel

Manages power and control cables for the crane's movement.

Festoon tracks (for cable organization).

Cable reels (for long-travel cranes).

12. Bumpers / End Stops

Absorb impact at the ends of the runway to prevent damage.

 

Additional Optional Components

Load cell / Weighing system (measures load weight).

Anti-sway system (reduces load swing).

Variable frequency drive (VFD) (for smoother acceleration/deceleration).

Cabin with ergonomic controls (for operator comfort).

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SKETCH

Main technical

 

1. High Load Capacity & Efficiency

Can handle loads ranging from 1 ton to over 500 tons, depending on design.

Faster lifting and moving compared to forklifts or manual labor.

Ideal for repetitive lifting tasks in manufacturing and assembly lines.

2. Precise Load Positioning

Smooth winch operation allows accurate vertical and horizontal movement.

Trolley and bridge movement enable precise placement of loads.

Useful in tight spaces where forklifts cannot operate.

3. Space Optimization

Installed overhead, freeing up floor space for other operations.

Underhung cranes can be mounted on existing structures (no need for additional support).

4. Improved Safety

Reduces manual lifting risks (worker injuries, load drops).

Equipped with safety features (limit switches, overload protection, emergency stop).

Stable lifting minimizes load swinging compared to mobile cranes.

5. Durability & Low Maintenance

Built with heavy-duty steel for long-term use.

Fewer moving parts than mobile cranes, reducing wear and tear.

Electric winches require less maintenance than hydraulic systems.

6. Versatility & Customization

Can be fitted with different winch types (electric, manual, pneumatic).

Adaptable for harsh environments (explosion-proof, corrosion-resistant).

Configurable with automation and remote control.

7. Cost-Effective Over Time

Reduces labor costs by minimizing manual handling.

Increases productivity with faster load transfers.

Long service life with proper maintenance.

 

These cranes are widely used across industries due to their strength, precision, and efficiency. Common applications include:

1. Manufacturing & Assembly Plants

Moving raw materials, machinery, and finished products.

Positioning heavy dies, molds, and presses in automotive and metalworking industries.

2. Warehousing & Logistics

Loading/unloading heavy pallets, containers, and equipment.

Stacking and retrieving goods in high-bay warehouses.

3. Construction & Infrastructure

Lifting steel beams, concrete panels, and prefab structures.

Assisting in bridge and high-rise building construction.

4. Shipbuilding & Ports

Handling ship components, engines, and cargo.

Used in dry docks and shipyards for assembly and repairs.

5. Mining & Heavy Industry

Transporting ore, minerals, and heavy machinery.

Maintenance of crushers, kilns, and large industrial equipment.

6. Power Plants & Energy Sector

Installing and servicing turbines, generators, and transformers.

Handling nuclear or wind energy components.

7. Automotive & Aerospace

Moving vehicle chassis, aircraft parts, and engines.

Used in assembly lines for precision placement.

8. Scrap Handling & Recycling

Lifting and transporting scrap metal, waste, and bulky recyclables.

 

 

1.Design and Engineering
Requirements Gathering:

Load capacity (e.g., 10T, 50T, 100T, etc.), span, lifting height, and operational environment are defined.

Customization needs are assessed, such as control modes (pendant, wireless, cabin) and special features (e.g., anti-collision, overload protection).

Preliminary Design:

Structural engineers and crane designers create the crane's initial design, including the main beam, end carriage, lifting system, trolley system, travel mechanism, and other components.

Calculation and Simulation:

Load calculations are performed to ensure the crane can handle the specified capacity.

Finite element analysis (FEA) may be used to simulate stresses and deflections in the structure to ensure safety and stability.

Detailed Design:

After approval, detailed drawings for each part are made, including the main girder, end carriage, hoist system, motors, control systems, and safety features.

2. Material Procurement
Raw Material Selection:

High-quality materials like steel, alloyed steel, forged steel, and electrical components are sourced according to specifications.

Materials are inspected for quality certification and compliance with industry standards (e.g., ISO, CE).

Component Sourcing:

Standard components such as motors, hoists, control panels, limit switches, and safety devices are sourced from reliable suppliers.

3. Fabrication of Components
Main Girder:

Cutting and welding of steel plates to form the bridge girder.

The girder is assembled by welding or bolting sections, ensuring it meets the required strength and precision.

End Carriage Assembly:

The end carriage is fabricated and assembled to hold the crane on the runway rails.

Wheel assemblies are installed to ensure smooth travel along the rails.

Hoist and Trolley System:

The hoist unit (electric or manual) is assembled, including the drum, wire rope, hook, and motor.

The trolley system is built to transport the hoist across the bridge, including trolley wheels and drive mechanisms.

Crane Traveling Mechanism:

The crane wheels are mounted on the end carriages, ensuring smooth horizontal movement.

The drive system is installed to control travel speed.

4. Assembly of Crane
Main Beam Installation:

The assembled main girder is lifted and positioned onto the end carriages.

The girder is aligned to ensure structural integrity.

Trolley and Hoist Installation:

The trolley system is mounted onto the main girder, and the hoist is mounted to the trolley.

The load chain or wire rope is installed and tested for smooth operation.

Travel Mechanism Setup:

The crane wheels are fitted, and the drive mechanism is connected to the control system for horizontal movement.

5. Electrical and Control System Installation
Wiring and Control Panel:

The control panel is installed and wired to manage all crane movements (hoisting, trolley, crane travel).

Limit switches, emergency stop buttons, and safety alarms are integrated into the control system.

Motor and Gear Installation:

Motors for hoisting, traveling, and the trolley are installed and connected to their respective gear systems.

Testing of Control Systems:

Control systems are checked to ensure proper integration of pendant control, wireless remote, or cabin control options.

6. Testing and Quality Control
Load Testing:

The crane undergoes static load testing (to check stability) and dynamic load testing (to check operational performance under actual working conditions).

Overload protection and limit switches are tested to ensure they function correctly.

Safety System Testing:

The sound and light alarms, limit switches, emergency stop buttons, and safety devices are all tested for functionality.

Movement Testing:

All movements-hoisting, trolley movement, bridge travel, and sway control-are tested for smooth operation and precision.

Electrical Testing:

All electrical components are tested for proper wiring, grounding, and communication between systems.

Documentation and Certification:

The crane is inspected according to international safety standards and undergoes certification by relevant authorities (e.g., CE, ISO).

Test certificates for motors, cranes, and load testing are prepared.

7. Final Inspection and Painting
Visual Inspection:

A thorough inspection is carried out to ensure that the crane meets design specifications and safety requirements.

Painting:

The crane is painted with high-quality anti-corrosion coatings to protect it from environmental conditions.

Marking and Labeling:

Safety labels, warnings, and capacity markings are applied to the crane for proper identification.

8. Delivery and Installation
Shipping:

The crane is carefully disassembled into transportable parts (if needed) and shipped to the customer's location.

Installation:

The crane is installed on-site, and all connections (power, mechanical, control) are made.

Final Commissioning:

The crane is commissioned by running it through a series of operational tests to ensure it works properly.

Operator training is conducted, if necessary, for safe and efficient use.

9. Post-Installation Support
Customer Training:

Operator training on how to use the crane safely and effectively.

Maintenance Schedule:

Providing a maintenance plan for the crane's continued operation, including regular inspections, lubrication, and testing.

After-Sales Support:

Offering spare parts, troubleshooting, and repair services.

Workshop view:

The company has installed an intelligent equipment management platform, and has installed 310 sets (sets) of handling and welding robots. After the completion of the plan, there will be more than 500 sets (sets), and the equipment networking rate will reach 95%. 32 welding lines have been put into use, 50 are planned to be installed, and the automation rate of the entire product line has reached 85%.