Not every lifting operation can be completed safely or efficiently using conventional lifting equipment. Sometimes, the solution requires a purpose-designed lifting arrangement engineered specifically for the task.
Across mining, manufacturing, construction and heavy industry, lifting and handling large, heavy or irregularly shaped equipment can present significant engineering challenges.
While standard lifting beams, spreader bars and commercially available lifting attachments are suitable for many applications, specialised equipment often requires a more tailored approach.
At Trang Imagineering, we provide mechanical and structural engineering services for the design and assessment of lifting jigs, lifting beams, frames and specialised lifting equipment.
Our focus extends beyond simply verifying lifting capacity. We aim to develop practical, fit-for-purpose solutions that consider the equipment being lifted, the available lifting machinery, operational constraints and the requirements of the lifting process.
What Is a Lifting Jig?
A lifting jig is a purpose-designed device or arrangement used to lift, support, position or manipulate equipment during handling, installation, maintenance or transportation.
Lifting jigs can range from relatively simple fabricated steel assemblies through to complex mechanical systems developed for a specific industrial application.
Common examples include:
Spreader Beams: Designed to maintain separation between lifting points and control the geometry of lifting slings.
Lifting Beams: Structural members that distribute loads between lifting points and a crane or hoist.
Lifting Frames: Fabricated structures designed to support and lift equipment at multiple locations.
Custom Lifting Attachments: Purpose-designed brackets, lugs, clamps and fixtures for specialised components.
Equipment Handling Jigs: Devices used to lift, rotate, position or support machinery during maintenance or assembly.
Installation and Maintenance Jigs: Specialised arrangements developed to overcome access, clearance or handling constraints.
Modular Lifting Systems: Reconfigurable lifting arrangements designed to accommodate different equipment configurations.
The appropriate solution depends on the load, lifting geometry, operating environment and intended use.
When Standard Lifting Equipment Isn't Enough
Many industrial components are not designed with convenient or adequately rated lifting points.
Large machinery may have an uneven centre of gravity, irregular geometry or delicate components that cannot tolerate conventional lifting arrangements.
In other situations, the lifting challenge may be created by the surrounding environment.
For example, equipment may need to be removed from a processing plant where overhead clearance is restricted, access is limited or existing structures obstruct conventional rigging arrangements.
These situations may require specialised engineering solutions.
A purpose-designed lifting jig can provide controlled load distribution, improved access, appropriate lifting geometry and more efficient handling.
The objective is to develop an arrangement that satisfies the engineering requirements while remaining practical for the personnel undertaking the lift.
Spreader Beams and Lifting Frames
Spreader beams and lifting frames are among the most common forms of engineered lifting equipment.
Although their arrangements may appear relatively straightforward, their design requires consideration of several important factors.
These include the load weight, lifting point locations, sling angles, load distribution, structural capacity and the forces transferred into the equipment being lifted.
A lifting arrangement must also consider the behaviour of the complete system, including the lifting device, rigging connections and the load itself.
For specialised applications, standard lifting beam configurations may not provide suitable geometry or load distribution.
Custom lifting frames and multi-point arrangements can offer greater flexibility, particularly for large fabricated structures, mechanical assemblies and equipment with irregular lifting locations.
Custom Lifting Jigs for Complex Applications
Some lifting challenges require considerably more than a conventional beam or frame.
Mining and industrial maintenance operations frequently involve the removal, installation or repositioning of heavy components within confined or difficult-to-access locations.
These applications may require custom-designed equipment that interfaces directly with the machinery being handled.
Examples can include:
Specialised jigs for removing and installing mechanical components.
Lifting attachments designed around irregular equipment geometry.
Fixtures that support equipment during rotation or repositioning.
Multi-point lifting arrangements for large machinery assemblies.
Handling equipment designed for restricted access environments.
Purpose-designed lifting systems for repetitive maintenance activities.
In these situations, the engineering challenge extends beyond lifting capacity.
The design may also need to consider equipment stability, access, operational clearances, component protection and the practical sequence of the lifting operation.
A well-designed lifting jig can simplify a difficult maintenance task and improve the repeatability of future operations.
Engineering Analysis and Structural Verification
Lifting equipment must be designed with appropriate consideration of the forces and operating conditions it may experience.
Depending on the application, engineering assessments may involve structural calculations, connection design, assessment of load distribution and consideration of relevant Australian Standards.
Finite Element Analysis (FEA) can also provide valuable insight into the behaviour of complex lifting assemblies, particularly where unusual geometry or load paths make conventional assessment more challenging.
However, the engineering assessment must consider the complete lifting arrangement rather than focusing solely on the fabricated jig.
The interaction between the lifting equipment, rigging components, attachment points and the equipment being lifted is an important part of developing a suitable design.
Where applicable, the design and verification process may reference standards such as AS 4991 for lifting devices and other relevant Australian Standards and regulatory requirements.
Designing for Practical Operation
A lifting jig may satisfy the required structural calculations but still be difficult or inefficient to use.
Practical engineering design must consider how the equipment will be installed, connected, operated, inspected and stored.
Important considerations may include:
Ease of attaching and removing the lifting jig.
Accessibility of lifting and connection points.
Safe positioning of personnel during lifting operations.
Available crane capacity and lifting height.
Compatibility with existing rigging equipment.
Equipment stability throughout the lifting process.
Transport, storage and handling of the jig itself.
Repeated use during planned maintenance activities.
For industrial maintenance operations, these practical considerations can significantly influence the success of the final design.
An effective lifting solution should be straightforward for the intended operators to use within an appropriately planned and controlled lifting operation.
From Concept Through to Fabrication Drawings
One of the advantages of engaging a multidisciplinary engineering consultancy is the ability to develop a lifting solution from the initial concept through to detailed design.
At Trang Imagineering, our mechanical and structural engineering capabilities allow us to assist with:
Reviewing the lifting application and identifying operational constraints.
Developing practical lifting concepts and equipment arrangements.
Designing lifting beams, frames, jigs and specialised attachments.
Undertaking engineering calculations and structural analysis.
Preparing detailed fabrication and assembly drawings.
Developing appropriate design documentation and engineering verification.
Supporting design modifications and improvements where required.
This integrated approach helps ensure the lifting equipment can be manufactured and used in accordance with its intended design.
Lifting Equipment for Mining and Heavy Industry
Mining and industrial facilities often require specialised lifting equipment for maintenance, shutdowns, equipment replacement and plant upgrades.
Typical applications may involve:
Crushers, screens and processing equipment.
Conveyor drives, pulleys and mechanical assemblies.
Pumps, gearboxes and rotating machinery.
Heavy fabricated structures and equipment modules.
Industrial tanks and mechanical components.
Large replacement parts and maintenance assemblies.
Specialised machinery and manufacturing equipment.
In many cases, these components are not routinely lifted during normal operation but must be handled safely during maintenance or replacement.
Developing a dedicated lifting arrangement can reduce the complexity of future handling operations and provide a consistent solution for repeated maintenance tasks.
More Than Lifting Equipment Certification
Engineering verification and certification are important elements of lifting equipment design.
However, for complex applications, the real challenge is often determining how the lifting task can be achieved in the first place.
An existing lifting arrangement may be unsuitable due to geometry, available crane capacity, access restrictions or inadequate attachment points.
Simply identifying these limitations does not resolve the problem.
At Trang Imagineering, our mechanical and structural engineering capabilities allow us to assist with developing the lifting arrangement itself, rather than limiting our involvement to assessing an existing design.
Our focus is on providing practical engineering solutions that address the lifting challenge while satisfying the applicable design and safety requirements.
Custom Lifting Equipment by Trang Imagineering
Whether the requirement involves a relatively straightforward spreader beam or a complex, purpose-designed lifting jig, Trang Imagineering can provide engineering support tailored to the application.
By combining mechanical design, structural engineering, analysis and detailed drafting, we help clients develop lifting equipment suited to their specific operational requirements.
The objective is not simply to design something strong enough to lift the load. It is to develop a lifting solution that works safely, efficiently and reliably in the environment where it will be used.
Need a Custom Lifting Solution?
If you have a difficult lifting or handling requirement, Trang Imagineering can assist with the development and engineering assessment of purpose-designed lifting equipment.
From spreader beams and lifting frames through to complex maintenance and installation jigs, our team can help turn a challenging lifting problem into a practical engineered solution.
Contact Trang Imagineering to discuss your lifting equipment design requirements.