Dynamic Engineering Consultants - Perth, Western Australia

Modular Mine Site Washbay Vehicle Ramp

dynamic — Mon, 22 Jan 2018 06:51:57 +0000

Dynamic Engineering Recently designed a 5T wash bay ramp. The requirements were:

1) Constructed it large welded assemblies that can be transported easily and that would minimise construction time on site – modular.

2) Galvanised surface treatment.

3) Open sections to make it easy to monitor corrosion and damage.

4) Capable of handling certain site vehicles.

5) Fully compliant with the relevant Australian Standards.

6) 5T capacity.

3D model of the ramp is given below

3D model 5T capacity vehicle ramp

Photos of the ramp during construction and testing

Actual ramp during construction

Actual ramp during testing

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Dump truck ramp

dynamic — Fri, 13 Oct 2017 04:04:41 +0000

Dump trucks are large and heavy vehicles and thus require very sturdy maintenance ramps. In addition, our client needs to be able to move the ramps easily. Dynamic Engineering designed the ramps, which fulfil both requirements. The ramp was designed in accordance with the Australian Standards and was made strong enough to withstand the load of the truck. The ramp can simply be moved with a forklift. It includes sleeves to prevent the forklift guides from damaging the ramp structure.

Dump truck ramp

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Container Monorail

dynamic — Fri, 13 Oct 2017 03:57:43 +0000

When a shipping container is used to transport heavy items, it might be advantageous to install a monorail which can extend outside the container to lift and move items from inside of the container. Dynamic Engineering was asked to design such a retractable container monorail according to the relevant Australian Standards (AS1418). In addition, the support beams, which connected to the container needed to be strong enough and were included in the design. DEC took the client’s initial concept and turned it into a working model with fabrication drawings. The following picture show the final design.

Final monorail design

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Hopper

dynamic — Fri, 13 Oct 2017 03:51:05 +0000

A hopper collects ore, which typically falls from an overhead conveyer or is dumped by a belt feeder into the bin. This causes dynamic loads and stresses, which need to be taken into account when designing the hopper. Dynamic Engineering analysed our client’s proposed design and found that it would require strengthening in order to reliably withstand the imposed forces. With relatively cheap modifications, a more robust design was implemented – saving our client on future repair and maintenance costs.

Final hopper design

FEA analysis of hopper

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Sliding plate drill rod fall protection system

dynamic — Fri, 13 Oct 2017 03:44:58 +0000

During up-hole drilling, a centraliser, using hydraulic force, holds the rod while the next drill rod is being inserted. It is very important that the rod doesn’t slip as it can cause serious damage to the drilling equipment or injury to the operator. To protect the equipment and operator, a sliding plate drill rod fall protection system could be installed as a fail-safe. The sliding plate assembly has to withstand the weight of the rod string including a safety factor. One such sliding plate was designed by Dynamic Engineering in conjunction with the client. The analysis was done to check that it complies with the Australian standard and is strong enough for the weight of the rod string.

Sliding plate assembly

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Crane Attachment

dynamic — Fri, 13 Oct 2017 03:38:21 +0000

Cranes are great to move heavy items into position, however need lots of space, but what to do when there are limited roof clearances? Recently DEC designed a specialized crane attachment that addressed the end client’s need for restricted height and specific access angles. The attachment was designed taking into consideration safety requirements and was analysed with Finite Element Analysis to ensure adherence to the Australian Standards AS1418. Afterwards it was manufactured, load tested and is now in use by the client.

Design of crane attachment, shown connected to the boom

Fabricated crane attachment fitted onto boom

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Vehicle Lifter

dynamic — Mon, 02 Oct 2017 23:55:49 +0000

Occasionally, a prototype needs to be checked against the relevant standards/specifications before more money is committed to the development of the final product. One such prototype was a vehicle lifter. The lifter is attached to the rear of the vehicle and could be used to change a tyre. Initial analysis found that the stresses were too high and modifications were suggested, which were incorporated into the final design.

Prototype

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Drill Mast Stand

dynamic — Mon, 02 Oct 2017 23:47:54 +0000

Many of our clients are happy to fabricate their own equipment, but need help converting their concept ideas into a design that complies with the Australian Standards. Dynamic Engineering works with the client, fine tuning the design until complies, and can then assist with generating accurate fabrication drawings.

In one such an example, our client wanted to analyse a drill mast stand with a WLL = 25T. Below is the concept along with the final design.

Client’s concept

Final Design

The concept had to undergo several modifications to comply with the stress, deflection, stability, buckling requirements. In addition the pins were checked to see if they were strong enough and finally the stand was checked while being lifted with the forklift.

Finite Element Analysis

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Radiation Source Cradle Design and Supply

dynamic — Mon, 28 Aug 2017 01:01:30 +0000

A radiation source cradle was designed to assist plant metallurgists to easily and safely move radiation sources around inside a process plant.

Due to the weight of the source the cradle was designed to that it can be carried by two people. The cradle weight was kept low by using aluminium for its construction and was fitted with spacers that made it multi functional. It was also furnished with a stainless steel nameplate that contained information regarding the load rating and use.

Radiation Source Cradle

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Design Certification Service

dynamic — Tue, 18 Apr 2017 00:27:58 +0000

Computer assisted stress analysis streamlines the certification of equipment. A 3d-computer model takes the guesswork out of new designs. Changes can be made quickly and inexpensively and the result can be checked straightaway. With Finite Element Analysis (FEA) different loads can be applied, including gravity, remote force and torque. The resultant stresses and deflection can be checked against design specifications. The first step in computer modelling is drawing the equipment or tool in three dimensions. The CAD software then meshes the model by subdividing it into smaller elements. The loads and constraints are added and the resultant stresses and deflections are calculated for each of these numerous elements. Lastly stress/deflection equations are solved for each of these elements and the results are combined to find the overall solution. Below are some stress analysis examples showing the resultant stresses.

Engine Stand:

3D model of an engine stand

Track Guide Lifter:

3D model of track guide lifter

Jacking Tool:

3D model of jacking tool

Belt Reel Frame:

3D model of reel drum frame

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