MH Model Electric Hoist Single Girder Gantry Crane

The MH Model Electric Hoist Single Girder Gantry Crane is a light to medium-duty material handling crane equipped with an electric wire rope hoist. It is designed for indoor and outdoor use, especially in places where overhead runway beams are not available.

This crane is widely used in factories, warehouses, workshops, storage yards, and construction sites due to its simple structure, reliable performance, and cost-effective design.

 

Main Features

1. Single Girder Box Structure

Welded box-type or I-beam girder

Lightweight design with sufficient rigidity

Reduced wheel pressure on ground rails

2. Electric Wire Rope Hoist

CD / MD type electric hoist

Installed under the main girder

Stable lifting and precise positioning

Easy maintenance and replacement

3. Simple & Reliable Traveling Mechanism

Independent driving system on one side

Smooth crane traveling on ground rails

Easy installation and adjustment

4. Flexible Installation

Suitable for indoor and outdoor operation

Can be used with or without a workshop building

Optional cantilever design for extended coverage

5. Multiple Control Options

Pendant push-button control

Wireless remote control (optional)

 

Lifting Capacity 320 tons
Span (Width) 3 - 12 meters (adjustable)
Lifting Height 3 - 10 meters
Working Class A3-A5 (light to medium duty)
Hoisting Speed 0.5 - 8 m/min (variable)
Main Beam Type Single/double girder (box-type)
Power Supply 220V/380V 3-phase or manual
Control Mode Pendant control/wireless remote
Hoist Type Electric chain hoist/wire rope hoist
Travel Drive Manual push or motorized
Corrosion Protection Hot-dip galvanized or marine-grade paint
Wind Resistance Up to Beaufort scale 6 (for outdoor use)
Operating Temp -20°C to +50°C

The MH Model Electric Hoist Single Girder Gantry Crane is a light to medium-duty gantry crane equipped with an electric wire rope hoist, designed for efficient material handling in workshops, warehouses, and outdoor yards.

1. Main Girder

Single welded box girder or I-beam structure

High-strength steel with proper camber

Supports the electric hoist and load

Lightweight design for reduced wheel pressure

2. Electric Wire Rope Hoist

CD or MD type electric hoist

Includes:

Hoisting motor

Gear reducer

Wire rope drum

Steel wire rope

Hook block with safety latch

Installed under the main girder

3. Gantry Legs (Supporting Structure)

Steel leg frames supporting the main girder

Typically one rigid leg and one flexible leg

Transmit load to ground rails

Optional ladders and maintenance platforms

4. End Carriages / Ground Traveling Mechanism

End beams installed at the bottom of gantry legs

Equipped with:

Crane wheels

Bearings

Shafts

One side driven, one side driven or passive depending on design

 

5. Crane Traveling Drive System

Travel motor

Gear reducer

Brake system

Couplings and transmission shafts

 

 

6. Electrical Control System

Electrical control box or cabinet

Contactors, relays, overload protection

Wiring for hoist and travel mechanisms

Optional frequency inverter (VFD)

7. Control Devices

Pendant push-button control

Wireless remote control (optional)

8. Power Supply System

Cable festoon system

Trailing cable system

Main power isolator

 

 

9. Safety Protection Devices

Overload limiter

Upper and lower lifting limit switches

Crane travel limit switches

Emergency stop button

Buffers and rail sweepers

Anti-derailment devices

10. Auxiliary & Optional Components

Cantilever extension

Wind alarm and rail clamp (for outdoor cranes)

Lighting system

Rain cover for motors and hoist

SKETCH

 

Main technical

 

Advantages of MH Model Electric Hoist Single Girder Gantry Crane

1. Cost-Effective Design

Single girder structure reduces steel consumption

Lower manufacturing and installation costs compared to double-girder gantry cranes

Ideal for projects with limited budgets

2. Lightweight & Low Wheel Pressure

Compact structure minimizes load on ground rails

Suitable for workshops with limited foundation strength

3. Simple Structure & Easy Maintenance

Fewer components, easy installation

Electric hoist is easy to replace and service

Lower maintenance and operating costs

4. Flexible Installation

Suitable for indoor and outdoor applications

Does not require building runway beams

Optional cantilever design expands working range

5. Stable & Reliable Operation

Electric wire rope hoist ensures smooth lifting

Suitable for light and medium-duty working classes (A3–A5)

6. Multiple Control Options

Pendant push-button control

Wireless remote control (optional)

Easy operation with minimal training

7. Good Adaptability

Can be customized for different spans, lifting heights, and speeds

Optional weatherproof design for outdoor use

Applications of MH Model Electric Hoist Single Girder Gantry Crane

The MH gantry crane is widely used in light to medium material handling scenarios.

1. Factories & Manufacturing Plants

Handling machine parts and equipment

Assembly and maintenance operations

2. Warehouses & Logistics Centers

Loading and unloading goods

Handling pallets, containers, and heavy packages

3. Construction & Material Yards

Lifting steel structures and construction materials

Handling precast concrete components

4. Equipment Maintenance Workshops

Repair and installation of machinery

Maintenance of vehicles and industrial equipment

5. Outdoor Storage Yards

Material handling in open yards

Suitable for steel yards and storage areas

The MH Model Electric Hoist Single Girder Gantry Crane is manufactured under standardized quality control to ensure reliable performance, structural safety, and long service life. The production process follows GB/T, FEM, ISO, and CE standards.

1. Engineering Design & Planning

Confirm lifting capacity, span, lifting height, and working duty (A3–A5)

Structural design and load calculations

Selection of electric hoist (CD / MD type)

Electrical system and safety device configuration

2. Raw Material Selection & Inspection

Structural steel (Q235B / Q345B) selected

Verification of material certificates

Ultrasonic testing for internal defects

Shot blasting or surface cleaning before fabrication

3. CNC Cutting & Component Preparation

CNC plasma or flame cutting of:

Main girder plates

Gantry leg plates

End beam components

Stiffeners and brackets

Edge beveling for welding

Dimensional inspection and part marking

4. Main Girder Fabrication

4.1 Girder Assembly

Assembly of box-type girder or I-beam structure

Use of fixtures to ensure correct camber and alignment

4.2 Welding

CO₂ gas-shielded welding or submerged arc welding

Uniform weld seams with high strength

4.3 Straightening & Stress Relief

Mechanical straightening to control deformation

Optional vibration stress relief

4.4 Weld Inspection

Visual inspection

Magnetic particle testing (MT) for key welds

5. Gantry Leg & End Beam Manufacturing

Welding of gantry legs (rigid leg + flexible leg)

Fabrication of end beams

CNC machining of wheel mounting surfaces

Installation of crane wheels and bearings

6. Crane Traveling Mechanism Assembly

Installation of:

Travel motors

Gear reducers

Braking devices

Alignment and smooth-travel testing

7. Electric Hoist Installation

Installation of electric wire rope hoist under main girder

Wire rope threading and hook block installation

Adjustment of hoist brakes and limit switches

8. Electrical System Assembly

Assembly of electrical control box

Wiring of hoist and traveling mechanisms

Installation of:

Overload limiter

Lifting height limit switches

Emergency stop system

Optional VFD installation

9. Surface Treatment & Painting

9.1 Shot Blasting

Steel structures blasted to Sa2.5 standard

9.2 Painting System

Epoxy zinc-rich primer

Epoxy intermediate coating

Polyurethane topcoat

Color customized as per customer requirement

10. Crane Assembly & Factory Testing

Assembly of main girder, gantry legs, and end beams

Installation of electrical wiring and power supply system

No-load operation test

Static load test (125% rated load)

Dynamic load test (110% rated load)

Safety device functional testing

11. Packing & Transportation

Electrical components packed in wooden crates

Hoist and motors protected with moisture-proof covers

Steel structures wrapped for transportation safety

12. On-Site Installation & Commissioning

Installation of ground rails and crane structure

Electrical connection and grounding

On-site load testing and commissioning

Operator training and safety instruction

13. Final Inspection & Acceptance

Performance inspection and acceptance

Delivery of quality certificates, manuals, and test reports

Warranty and after-sales service support

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%.