5 Ton to 32 Ton Double Girder Semi Goliath Crane with Box Girder

The double girder design of these cranes provides superior stability and rigidity during operation. By minimizing deflection and sway, Double Girder Semi Goliath Cranes ensure precise positioning and controlled movements, essential for lifting operations that demand accuracy and safety. This structural robustness also contributes to prolonged crane longevity and reduced maintenance requirements, enhancing overall operational efficiency.

Double Girder Semi Goliath Cranes are well-suited for outdoor environments characterized by uneven or rugged terrain. Unlike fully gantry-supported cranes, which require a level surface for both rails, semi goliath cranes feature one end supported on the ground and the other on a runway beam or rail structure. This design flexibility allows them to operate effectively in yards, construction sites, or open-air facilities where ground conditions may vary, providing versatile lifting solutions without compromising on performance or safety.

These advantages make Double Girder Semi Goliath Cranes indispensable in industries where heavy lifting, stability, and adaptability to outdoor environments are critical considerations.

• Customized design, Compact crane structure, Durable gantry girder design, Great rigidity.
• Good crane performance,Smooth crane starting and stopping,Stable and reliable traveling, Strong ability of lateral load proof.
• Crane installation and operation with high flexibility, Excellent exchange ability for parts and components,.Convenient maintenance,
• Low noise, No pollution,Electricity saves,Less investment

• Dual speed electric hoist with CD,MD motor, travelling on rail of semi goliath crane.
• Three-in-one motor used on the semi goliath crane to save more working space.
• Best light crane equipped with hard tooth face reducer & three-in-one motor for outdoor or workshop use.
• Lowest space between the top of trolley crab and the trolley rail, 20-30 % less than the traditional type.
• Electric panel with more than 2 million times service life, are used on the semi goliath crane.
• Various protection devices and alarming devices are used to .ensure the security and stability of double girder semi-goliath crane.

These cranes typically consist of two main girders running parallel to each other across the span of the crane. The double girder design enhances structural integrity and load-bearing capacity, making them suitable for handling heavier loads compared to single girder alternatives. The semi goliath structure involves one girder end supported by wheels or rails on a ground-level track, while the other end travels on a higher runway beam or rail structure.

Key components include:

• Girders: Two parallel beams that support the hoist and trolley system.
• Hoist and Trolley System: Mechanism responsible for lifting and moving loads horizontally along the girders.
• End Carriages: Support structures at each end of the crane girders, housing wheels or other means of movement.
• Runway Beam or Rails: Provides support and guidance for the crane's movement, ensuring stability and smooth operation.
• Electrical System: Controls for operation, including power supply, control panels, and safety features.

Double Girder Semi Goliath Cranes are designed to optimize lifting capabilities while maintaining flexibility and adaptability in various industrial environments, from manufacturing and logistics to construction and heavy assembly operations.

• Electric Hoist Trolley or Open Winch Trolley :Dual speed CD1,MD1 wire rope electric hoist, with single girder design & double girder design, can be mounted on single beam & double beam bridge crane, goliath crane and arm cranes.
• Main Beam :Main girder beam is de-rustd by sandblast and painted with zinc rich epoxy primer, and cut by plasma numerical control cutting machine with high precision. The ultrasonic or x-ray flaw detection is used to ensure the quality of the butt welding of tension flange.
• Outrigger :The rigid outrigger design and flexible outrigger,are all connected by high -tension bolt. When the length of span is beyond 30m, a flexible leg is need to reduce the lateral thrust of the loaded trolley to the rail.
• Ground End Beam :End beam is de-rustd by sandblast and painted with zinc rich epoxy primer, equipped with wheels which is produced in special vacuum casting workshop with more elastic and durable hard-wearing outer surface.

In terms of gantry girder designs, the semi goliath cranes can be grouped into single girder double girder semi-goliath craneand double girder double girder semi-goliath cranes. With single gantry girder design, the capacity of single girder double girder semi-goliath craneis range from 1 ton to 16 ton, and with double gantry girder design, the capacity of the double girder double girder semi-goliath craneis from 3 ton up 32 ton. The main parameters of the single girder & double girder double girder semi-goliath cranes are shown as following：

Double Girder Configuration

Double Girder Semi Goliath Cranes are characterized by their robust double girder configuration, which significantly enhances their load-bearing capacity and structural stability. The use of two parallel girders provides greater rigidity compared to single girder cranes, allowing for the efficient handling of heavier loads over longer spans. This configuration also accommodates larger lifting heights and ensures minimal deflection, crucial for precision lifting operations in industrial settings.

Materials Used in Construction

The construction of Double Girder Semi Goliath Cranes involves the use of high-quality materials selected for their durability, strength, and resistance to environmental factors. Common materials include:

• Girder Beams: Typically made from structural steel or alloy steel to withstand heavy loads and minimize structural deformation.
• End Carriages: Constructed from robust steel components to support the girders and ensure stable movement along the runway.
• Rails or Runway Beams: Made from steel or other suitable alloys to provide a secure track for the crane's travel and support.

Additional components such as fasteners, bearings, and electrical wiring are chosen for their reliability and performance under operational conditions. The selection of materials is crucial to ensuring the longevity and operational efficiency of the crane, particularly in demanding industrial environments where reliability and safety are important.

• Commonly used in heavy industries such as steel mills, power plants, and large manufacturing facilities.
• Ideal for applications requiring the lifting and movement of large, heavy loads over long distances.

• Suitable for construction sites, warehouses, and maintenance facilities where weight savings are important.
• Effective for lifting and transporting moderate loads, often used in applications where crane weight is a concern.

• Capable of supporting higher load capacities due to its solid, enclosed structure.
• Often used in scenarios where maximum lifting capacity and minimal deflection are critical.

• Supports moderate load capacities, with a focus on reducing overall crane weight.
• Suitable for applications where load capacities are lower, but efficient material use is essential.

• Heavier due to the solid, enclosed construction, which contributes to its high load capacity.
• The increased weight requires more substantial support structures and foundations.

• Lighter, as the open framework reduces material usage while maintaining strength.
• The reduced weight makes it easier to install and relocate, with less strain on support structures.

• Highly durable and resistant to wear and tear, suitable for continuous heavy-duty operations.
• The closed design protects internal components from environmental factors.

• Durable but with a focus on efficient material use, suitable for regular industrial applications.
• The open design may expose internal components to environmental factors, requiring more maintenance.

• Offers high customization in terms of span, height, and load capacity to meet specific industrial needs.
• Can be tailored to various operational requirements, including specialized lifting tasks.

• Also customizable, with flexibility in designing for specific load capacities and spatial constraints.
• Suitable for applications where weight and material efficiency are prioritized.

• Provides superior stability and strength, minimizing deflection under heavy loads.
• Ideal for applications where maintaining structural integrity under high stress is essential.

• Offers good stability with a focus on distributing loads efficiently through the truss structure.
• Effective in applications where reducing material stress and maintaining lightweight construction are important.

• Generally higher cost due to the increased material use and construction complexity.
• The investment reflects the enhanced strength and load capacity.

• Potentially lower cost due to the reduced material usage and simpler construction.
• The cost-effectiveness reflects the balance between strength and lightweight design.

All in all, the semi gantry cranes with box girder and truss girder designs are different in the following terms

Box Girder Design:

• Pros: High torsional rigidity, suitable for heavy loads, highly durable, customizable, superior stability.
• Cons: Heavier weight, higher cost, requires substantial support structures.

Truss Girder Design:

• Pros: Lightweight, cost-effective, good load distribution, customizable, easier installation.
• Cons: Moderate load capacity, potentially more maintenance, less suitable for very heavy-duty applications.

Both designs offer unique advantages, with the Box Girder design excelling in heavy-duty applications requiring maximum strength and stability, while the Truss Girder design provides a lightweight, cost-effective solution for moderate load handling with efficient material use.

Double Girder Semi Goliath Cranes tailored for outdoor use are engineered to withstand challenging environmental conditions while providing robust lifting capabilities. With one end supported on the ground and the other on a runway beam or rail structure, these cranes offer flexibility in deployment across construction sites, ports, and outdoor storage yards. They excel in lifting and transporting bulky materials, containers, and structural components, facilitating efficient logistics and construction operations. Weather-resistant materials and corrosion protection measures ensure longevity and reliability in outdoor settings, making them essential for applications requiring durability and adaptability to varying weather conditions.

Double Girder Semi Goliath Cranes designed for hazardous environments are equipped to operate safely in environments where explosive atmospheres or chemical hazards may be present. These cranes adhere to stringent safety standards and regulatory requirements, incorporating specialized features such as explosion-proof components, spark-resistant materials, and enhanced ventilation systems. They are commonly utilized in industries such as oil refineries, chemical plants, and mining operations where the presence of flammable substances necessitates careful consideration of equipment design and operational protocols. These cranes ensure reliable and secure lifting operations while mitigating risks associated with hazardous materials, prioritizing both personnel safety and operational efficiency.

• Heavy-duty Manufacturing and Assembly:In heavy-duty manufacturing facilities, Double Girder Semi Goliath Cranes are essential for lifting and maneuvering large components, machinery, and materials. They excel in industries such as automotive manufacturing, steel production, and aerospace, where precision handling of heavy loads is crucial for assembly processes. These cranes facilitate efficient material flow and streamline production operations, enhancing productivity and minimizing downtime.
• Warehousing and Logistics:Within warehousing and logistics environments, Double Girder Semi Goliath Cranes play a pivotal role in managing inventory, handling oversized goods, and optimizing storage space. Their ability to lift heavy loads across wide spans ensures efficient movement of pallets, containers, and bulk materials within distribution centers and storage facilities. They are also used in automated storage and retrieval systems (AS/RS) to enhance operational efficiency and inventory management.
• Construction Sites and Shipyards: Double Girder Semi Goliath Cranes are indispensable in construction sites and shipyards where they facilitate the lifting and positioning of building materials, prefabricated components, and maritime equipment. Their mobility and adaptability to uneven ground make them ideal for outdoor construction projects, such as bridge construction, building erection, and infrastructure development. In shipyards, these cranes are used for launching vessels, handling ship components, and supporting marine maintenance operations, ensuring safe and efficient maritime logistics.

These applications underscore the versatility and utility of Double Girder Semi Goliath Cranes across diverse industrial sectors, where their robust performance and lifting capabilities contribute to operational efficiency and project success.

Double Girder Semi Goliath Cranes offer a range of customization options to meet specific operational requirements and enhance functionality:

• Span Length and Lifting Height:Customizable span lengths and lifting heights allow Double Girder Semi Goliath Cranes to adapt to varying facility layouts and operational needs. Manufacturers offer configurations tailored to specific project requirements, ensuring optimal coverage and reach within the workspace. This customization capability is crucial in environments where different lifting heights or spans are necessary to accommodate varying load sizes or operational constraints.Hoisting Mechanisms and Speed
• Control:The choice of hoisting mechanisms, such as wire rope hoists or chain hoists, enables customization based on load capacities and operational preferences. Advanced speed control systems, including variable frequency drives (VFDs), provide precise control over lifting and lowering speeds, optimizing productivity and enhancing safety during crane operations. Customizable speed settings accommodate different load conditions and operational environments, ensuring efficient material handling and reduced cycle times.
• Safety Features and Automation:Integration of safety features and automation technologies enhances the operational safety and efficiency of Double Girder Semi Goliath Cranes. Customizable safety features may include overload protection systems, anti-collision devices, emergency stop buttons, and perimeter safety fencing to prevent unauthorized access. Automation options, such as remote control systems, automated load positioning, and diagnostics monitoring, streamline crane operations and minimize manual intervention, improving overall productivity and reducing downtime.

These customization options empower businesses to tailor Double Girder Semi Goliath Cranes to specific operational environments, ensuring optimal performance, safety, and efficiency across diverse industrial applications.

Double Girder Semi Goliath Cranes require careful consideration of various operational factors to ensure reliable performance and longevity:

• Maintenance Requirements:Effective maintenance practices are essential to maximize the operational lifespan and reliability of Double Girder Semi Goliath Cranes. Regular inspections, lubrication of moving parts, and timely replacement of wear components such as ropes and brakes are crucial maintenance tasks. Scheduled maintenance programs, including preventive maintenance and routine inspections by qualified technicians, help identify potential issues early and minimize unplanned downtime. Manufacturers often provide maintenance guidelines and service schedules tailored to specific crane models to optimize performance and ensure compliance with safety standards.Power Supply
• Specifications (Voltage, Frequency):Double Girder Semi Goliath Cranes operate on electrical power, requiring specific voltage and frequency specifications to function effectively. Power supply requirements typically include considerations for voltage levels (e.g., 380V, 440V, 480V) and frequency (e.g., 50Hz or 60Hz), depending on regional standards and application needs. Ensuring compatibility with the facility's electrical infrastructure and providing stable power distribution are critical to prevent operational disruptions and equipment damage. Voltage regulation devices and surge protection systems may be employed to safeguard crane electronics and ensure consistent performance under varying power conditions.
• Environmental Factors (Weather Resistance, Corrosion Protection)Environmental conditions, such as exposure to weather elements and corrosive atmospheres, can impact the performance and longevity of Double Girder Semi Goliath Cranes. Manufacturers incorporate weather-resistant materials and corrosion protection measures, such as galvanized coatings, epoxy paints, and stainless steel components, to mitigate the effects of moisture, UV radiation, and chemical exposure. Crane installations in outdoor or maritime environments may require additional protective measures, including climate-controlled cabins, sealing against dust ingress, and periodic surface treatments to maintain structural integrity and prevent premature deterioration.

Addressing these operational considerations ensures that Double Girder Semi Goliath Cranes operate efficiently, sustainably, and safely throughout their service life, supporting uninterrupted industrial operations and minimizing maintenance costs.

Compliance with international crane standards and local safety regulations is crucial for ensuring the safe operation and regulatory adherence of Double Girder Semi Goliath Cranes:

ISO Standards: Double Girder Semi Goliath Cranes should comply with relevant ISO standards that define requirements for design, manufacturing, testing, and safety of cranes. Key standards include:

• ISO 4301-1: Cranes - Classification - Part 1: General
• ISO 4306-1: Cranes - Vocabulary - Part 1: General
• ISO 12480-1: Cranes - Design principles for loads and load combinations - Part 1: General principles
• ISO 16881-1: Cranes - Design principles for loads and load combinations - Part 1: General principles
• ISO 16881-2: Cranes - Design principles for loads and load combinations - Part 2: Bridge and gantry cranes

• Safety Regulations: Double Girder Semi Goliath Cranes must adhere to local safety regulations and codes specific to the region where they are installed and operated. These regulations often include requirements for crane design, operation, maintenance, and personnel training to ensure workplace safety and prevent accidents.
• Inspections: Regular inspections by qualified personnel are mandatory to verify crane compliance with safety standards and operational integrity. Inspections typically cover structural components, mechanical systems, electrical components, safety devices, and overall operational performance. Inspectors may conduct visual inspections, non-destructive testing (NDT), load testing, and functional tests to assess crane condition and identify potential safety hazards.
• Certification and Documentation: Cranes may require certification from regulatory authorities or third-party inspection agencies to demonstrate compliance with applicable standards and regulations. Documentation such as load charts, operation manuals, maintenance records, and inspection reports must be maintained and readily available for audit purposes.

Adherence to international standards and local regulations ensures that Double Girder Semi Goliath Cranes operate safely, reliably, and legally within industrial environments, promoting worker safety and operational efficiency.

• Heavy-Duty Manufacturing: In a large-scale automotive manufacturing facility, Double Girder Semi Goliath Cranes are used for handling heavy components such as engine blocks and chassis assemblies. Their dual girder configuration and high load capacity ensure efficient material flow and support seamless production operations. The cranes facilitate precise positioning and lifting in confined spaces, contributing to increased productivity and operational efficiency.
• Construction and Infrastructure Projects: On a major bridge construction site, Double Girder Semi Goliath Cranes play a crucial role in lifting precast concrete segments and structural elements. Their mobility and adaptability to uneven terrain allow them to maneuver around construction obstacles while maintaining safety and precision during lifting operations. The cranes support timely project completion by enabling rapid assembly and installation of bridge components, minimizing construction delays.
• Shipbuilding and Maritime Industries: In shipyards, Double Girder Semi Goliath Cranes are employed for launching and outfitting vessels. Their robust design and lifting capabilities facilitate the handling of large ship sections and maritime equipment. The cranes ensure efficient workflow and logistics management, supporting shipbuilding projects from keel laying to final outfitting stages. They enhance operational throughput and enable shipyards to meet strict project timelines and delivery schedules.

• Environmental Conditions: In an outdoor steel fabrication yard, Double Girder Semi Goliath Cranes faced challenges related to exposure to harsh weather conditions and corrosive environments. To mitigate corrosion and ensure crane longevity, protective measures such as epoxy coatings, stainless steel components, and regular maintenance were implemented. These solutions safeguarded crane performance and minimized downtime due to weather-related damage.
• Operational Efficiency: In a logistics warehouse handling diverse cargo types, Double Girder Semi Goliath Cranes encountered challenges related to operational efficiency and load handling variability. Advanced automation features, including automated load positioning systems and real-time monitoring, were integrated to streamline crane operations. These enhancements optimized workflow efficiency, reduced turnaround times, and enhanced overall warehouse productivity.
• Safety and Compliance: During a refinery expansion project, Double Girder Semi Goliath Cranes were required to adhere to stringent safety regulations and compliance standards. Safety features such as anti-collision devices, overload protection systems, and operator training programs were implemented to ensure safe crane operation and mitigate risks associated with heavy lifting activities. Compliance with local safety regulations and regular inspections contributed to maintaining a safe working environment and preventing potential accidents.

These case studies illustrate the diverse applications and success stories of Double Girder Semi Goliath Cranes across different industries, highlighting their versatility, reliability, and capability to overcome operational challenges through innovative solutions and best practices.

• Maintenance Costs: Ongoing maintenance is critical to preserve crane performance and longevity. Maintenance expenses include routine inspections, lubrication, replacement of wear parts (e.g., ropes, bearings), and corrective maintenance to address operational issues. Preventive maintenance programs help minimize downtime and repair costs over the crane's lifespan.
• Energy Consumption: Double Girder Semi Goliath Cranes consume electrical energy during operation, primarily for hoisting, traversing, and auxiliary functions. Energy-efficient designs, such as variable frequency drives (VFDs) for motor control, can reduce energy consumption and operating costs. Monitoring energy usage and implementing energy-saving practices contribute to overall cost savings.
• Operational Efficiency: Efficient crane operation through optimized workflow planning, load scheduling, and operator training enhances productivity and reduces operational costs. Well-trained personnel ensure safe and effective crane utilization, minimizing the risk of accidents and associated downtime.

Assessing the total cost of ownership (TCO) considers both initial investment and ongoing operating expenses to determine the long-term financial impact of owning Double Girder Semi Goliath Cranes. TCO analysis helps stakeholders make informed decisions by balancing upfront expenditures with lifecycle costs and operational benefits.

By carefully evaluating initial investment and operating costs, businesses can optimize budget allocation, maximize crane performance, and achieve cost-effective material handling operations with Double Girder Semi Goliath Cranes.

Semi goliath cranes, the special form of overhead goliath cranes combine the advantages of overhead travelling bridge cranes and goliath cranes, but with higher flexibility than overhead eot crane and lower cost than the standard regular rail goliath crane. Semi goliath crane is a good choice to save investment and space, especially when you are in the following conditions:

• Your plant needs an efficient solution to coordinate forklifts to handle heavy or very long loads to improve safety, efficiency and save time.
• Your lifting volume is moderate which does not need to install an expensive and permanent overhead travelling crane system.
• Your plant has existing overhead cranes, but need an economical and versatile lifting system to supplement the existing crane system.

Semi goliath crane has a widely application for various industrial applications, Generally, semi goliath cranes can be used in the following two typical applications:

• Indoors - Semi goliath cranes is used to cooperate with the the existing overhead bridge cranes to provide more hooks and to improve the productivity of your factory.
• Outdoors - The single leg goliath crane is used outside but near the building, , taking advantage of the existing runway structure, to improve the cost efficient of your building.

All in all, Semi goliath cranes offers your economical material handling solution with lifting capacity up to 32 ton and crane span up to 32 m, which is an excellent alternative solution to expensive overhead cranes. Single leg semi goliath crane is widely used for material handling in open warehouse,mechanical processing workshop, outdoor places, etc. However, standard semi goliath crane is not allowed to be in hazardous environments, such as, the environment of combustible, explosive, dusty and corrosive, etc.