Mh Type Single Beam Gantry Crane

What is an MH Type Single Beam Gantry Crane?

An MH Type Single Beam Gantry Crane is a specific classification of a single-girder gantry crane designed for moderate to heavy-duty service. The "MH" designation (following standards like Chinese JB/T) typically stands for a duty class that is more robust than light-duty (MZ) cranes but not as intensive as the most severe-duty (MG) double girder cranes.

It is a versatile, cost-effective gantry crane that provides a balance of strength, capacity, and affordability for a wide range of industrial applications.

 

Advantages of MH Type Single Beam Gantry Cranes

Cost-Effectiveness: The single girder design requires less material and a simpler hoist system, making it significantly more affordable than a double girder crane of similar span.

Excellent Value for Duty Cycle: It offers the best balance of price and performance for applications that are too demanding for a light-duty crane but do not justify the expense of a double girder.

Easy Installation & Relocation: Simpler to assemble and can often be moved to a different location if facility needs change.

Low Headroom: The compact under-hung design maximizes the available lifting height under the beam, which is crucial in facilities with low ceilings.

Versatility: Suitable for both indoor and outdoor applications across many industries.

 

Comparison: MH Type Single vs. Double Girder

Feature	MH Type Single Girder	MH Type Double Girder
Girder Design	Single	Double
Duty Cycle	Moderate/Heavy (M4/M5)	Heavy/Severe (M5/M6)
Typical Capacity	1 - 20 Tons	5 - 50+ Tons
Hook Height	Lower (Under-Running)	Higher (Top-Running)
Cost	Economical	High
Ideal For	Frequent, medium-duty lifting	Intensive, high-capacity lifting

Conclusion: The MH Type Single Beam Gantry Crane is a highly practical and cost-justified solution for a vast range of material handling tasks. It fills the critical gap between light-duty occasional use and continuous severe-duty operation, offering durability and performance where it is needed most without unnecessary over-engineering. It is the smart choice for businesses looking to enhance productivity with a reliable and efficient lifting solution.

 

Place of Origin:Henan, China

Warranty:2 years

Weight (KG):60000 kg

Video outgoing-inspection:Provided

Machinery Test Report:Provided

Application:warehouses,factory and other place

Crane type:box type gantry crane

Travelling speed:20m/min

Lifting mechanism:Electric Hoist

Control method:Ground Control+ Remote Control (customized)

Working duty:A5

Working Temperature:-20~+40℃

Industrial voltage:380V50HZ3Phanse or other

Color:Customised

Customization:Accepted

 

Here is a detailed breakdown of the components of an MH Type Single Beam Gantry Crane.

1. Primary Structural System (The Framework)

Single Main Girder: The primary horizontal load-bearing beam.

I-Beam: A standard rolled steel section, cost-effective for lighter loads and shorter spans.

Welded Box Girder: Fabricated from steel plate for superior strength and rigidity. Used for higher capacities (closer to the 20-ton MH limit) and longer spans to minimize deflection.

Legs (End Trucks): The vertical supports.

Rigid Legs: Fixed-height legs made from I-beams or box sections.

Adjustable Legs: Feature telescopic sections or pin settings to adapt the crane's height to different applications.

Runway System:

For Rail-Mounted Cranes: Steel rails mounted on a solid foundation.

For Rubber-Tired Cranes: A smooth, hard surface is sufficient.

Bracing: Diagonal steel members between the legs and the girder. These are critical for providing lateral stability and preventing the crane from racking or swaying.

2. Lifting & Travel System (The Workhorse)

Electric Hoist Unit: The component that performs the lifting. For an MH class crane, this is a robust, industrial-grade hoist.

Hoist Motor: Electric motor designed for frequent starts and stops.

Gearbox: Reduces motor speed to increase lifting torque.

Drum or Sprocket: For winding wire rope or lifting chain.

Brake: Automatically engages to hold the load when the hoist is not powered.

Trolley Assembly: The unit that carries the hoist along the girder.

Trolley Frame: Supports the hoist.

Trolley Wheels: Run along the bottom flange of the main girder.

Trolley Drive: Motor and gears that propel the trolley. Can be electric or manual.

Lifting Hook: Forged steel hook with a safety latch to prevent slings from disengaging.

Travel Drives (Long Travel): The system that moves the entire crane.

Drive Motors: Mounted on the end trucks.

Wheels: Flanged for rails or solid rubber for floor use.

3. Power & Control System (The Nerves)

Power Supply:

Cable Reel: A spring-or motor-driven reel that manages the main power cable.

Festoon System: A trolley and track system that carries and manages the power and control cables.

Control Interface:

Pendant Station: A hanging push-button control box allowing the operator to control all crane functions.

Radio Remote Control: Allows wireless operation from a safe and optimal location.

Control Panel: Houses electrical components like contactors, overload relays, and sometimes a Variable Frequency Drive (VFD) for smooth control.

4. Safety Systems (The Lifeline)

Load Limiter / Load Moment Indicator (LMI): Prevents the hoist from lifting a load beyond its rated capacity. An LMI is more advanced and provides a readout.

Limit Switches:

Hoist Upper/Lower Limit Switches: Automatically cut power at the extremes of hook travel.

Travel Limit Switches: Stop the crane or trolley at the end of the runway or girder.

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Braking Systems:

Hoist Brake: Holds the load.

Travel Brakes: On the drive motors for controlled stopping.

Bumpers & End Stops: Rubber or polymer buffers to absorb impact energy at the end of travel.

Warning Device: A horn or buzzer to alert personnel when the crane is moving.

Summary: Key Features of an MH Type

Component	MH Type Single Girder Characteristic
Girder	Robust I-Beam or Welded Box Girder (heavier than light-duty MZ types)
Hoist	Industrial Electric Hoist rated for M4/M5 duty cycle
Legs	Reinforced with bracing for stability under load
Control	Reliable Pendant or Radio Remote
Safety	Includes Load Limiter and Limit Switches as standard

Conclusion: Every component of an MH Type Single Beam Gantry Crane is selected and built to handle regular, moderate to heavy-duty service. Its design prioritizes a balance of strength, reliability, and cost-effectiveness, making it a durable and practical lifting solution for countless industrial applications.

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Main technical

 

Advantages of MH Type Single Beam Gantry Crane

This crane is engineered to deliver optimal performance for moderate to heavy-duty tasks, offering a compelling set of benefits.

 

1. Superior Cost-Effectiveness

Lower Initial Investment: The single girder design requires less material and a simpler hoist system than a double girder crane, resulting in a significantly lower purchase price.

Reduced Operating Costs: It offers the perfect balance of price and performance for applications that are too demanding for a light-duty crane but do not justify the high expense of a double girder model.

2. Excellent Versatility and Adaptability

Wide Application Range: Suitable for a vast array of tasks, from moving machinery to loading trucks.

Indoor and Outdoor Use: Can be installed in factories, warehouses, and outdoor yards.

Adjustable Features: Many models offer adjustable span and height, allowing them to be configured for different spaces and tasks.

3. Space Efficiency

Low Headroom Design: The under-running hoist maximizes the available lifting height under the beam, which is crucial in facilities with low ceilings.

Clear Floor Space: Like all gantry cranes, it operates overhead, keeping the floor space free for other equipment, storage, and traffic.

4. Ease of Installation and Use

Simple Assembly: The structure is less complex than a double girder crane, making it quicker and easier to install.

Portability: Rubber-tired models can be easily moved to different locations within a facility as needed.

User-Friendly Operation: Simple controls via pendant or radio remote require minimal operator training.

5. Reliable Durability for its Class

Built for Frequent Use: With an M4 (Moderate Duty) or M5 (Heavy Duty) classification, it is constructed from robust components designed to withstand regular, frequent use.

Long Service Life: Properly maintained, an MH type crane provides years of reliable service with minimal downtime.

 

Applications of MH Type Single Beam Gantry Crane

The MH Single Beam Gantry Crane is a versatile workhorse found in numerous industries where reliable and efficient lifting is required.

 

1. Manufacturing and Assembly Plants

Moving Raw Materials: Transporting steel, aluminum, and other materials to production lines.

Handling Components: Lifting machine parts, weldments, and sub-assemblies between workstations.

Loading Finished Goods: Placing completed products onto trucks for shipment.

2. Warehousing and Logistics Centers

Loading/Unloading Trucks: Efficiently moving heavy palletized goods that exceed forklift capacity.

Stacking and Storage: Rearranging heavy items in a warehouse or storage yard.

3. Construction Sites and Outdoor Yards

Handling Building Materials: Lifting steel rebar, pipes, concrete forms, and scaffolding.

Yard Management: Moving and organizing materials like lumber, steel profiles, and machinery in outdoor storage areas.

4. Shipping Docks and Loading Bays

General Cargo Handling: Loading and unloading non-containerized cargo from trucks and railcars.

Feeding Production Lines: Moving materials from receiving docks to the start of a manufacturing process.

5. Maintenance and Repair Shops

Equipment Servicing: Lifting engines, transmissions, and heavy components out of vehicles and machinery for overhaul.

Factory Maintenance: Replacing heavy machine tools, molds, and press tools.

 

The production procedure for a single beam traveling gantry crane involves several key stages, from design and material procurement to assembly, testing, and final delivery. Below is a step-by-step outline of the typical manufacturing process:

1. Design & Engineering
Customer Requirements Analysis: Determine lifting capacity, span, lifting height, duty cycle, and operating environment.

Structural Design:

Design the main girder (single box or I-beam structure).

Design end carriages (legs/wheels) and runway beams.

Select hoist/trolley type (electric or manual).

Load & Stress Calculations: Ensure compliance with standards (ISO, FEM, DIN, or ASME).

Electrical & Control System Design: Choose motors, brakes, limit switches, and control panels.

2. Material Procurement
Steel Plates & Profiles: High-quality Q235B/Q345B steel for main girders and supports.

Mechanical Components: Wheels, axles, bearings, gears, and couplings.

Electrical Components: Motors, cables, control panels, and safety devices.

3. Fabrication of Main Components
A. Main Girder Fabrication
Cutting: CNC plasma/oxy-fuel cutting for precision.

Welding: Automated submerged arc welding (SAW) for strong seams.

Straightening & Inspection: Ensure proper camber (pre-bend) and check for defects (UT/RT testing).

B. End Carriages & Legs
Frame Assembly: Welded steel construction with reinforced bracing.

Wheel & Bearing Installation: Machined wheels for smooth travel.

C. Hoist & Trolley
Pre-assembled Hoist: Electric chain hoist or wire rope hoist.

Trolley Frame: Fabricated to accommodate hoist movement.

4. Surface Treatment & Painting
Shot Blasting: Removes rust and improves paint adhesion.

Primer & Paint: Anti-corrosion coatings (epoxy + polyurethane).

5. Assembly
Girder & End Carriage Joining: Bolt or weld the main beam to legs.

Hoist/Trolley Installation: Mounted on the girder.

Electrical Wiring: Connect motors, controls, and safety devices.

6. Testing & Quality Control
Dimensional Inspection: Verify span, height, and alignment.

Load Testing:

Static Load Test: 125% of SWL (Safe Working Load).

Dynamic Load Test: 110% of SWL with operational checks.

Functional Tests: Travel, lifting, braking, and limit switch verification.

7. Disassembly & Packaging
For Shipment: Crane may be disassembled into modules (girder, legs, hoist).

Protective Packaging: Waterproof wrapping for sea transport.

8. Installation & Commissioning (On-Site)
Runway Preparation: Ensure level rails or ground support.

Reassembly: Bolt components together.

Final Testing: Operational checks under load.

9. Documentation & Delivery
Manual & Certificates: Include load test reports, CE/ISO certifications.

Training: Operator and maintenance guidance.

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%.