Custom Designed Winching Systems

Isuzu Dmax

Rotec have been working with the Utility market for the last 20 years – designing and manufacturing winch systems for overhead line teams throughout the UK. Traditional vehicles such as landrovers were deemed the work horse and industry standard. Working with a number of organisation the challenge to replace the landrover centred on certain replacement vehicles – such as the Isuzu DMAX.

The bespoke system includes the following:

  • Electro-hydraulic PTO (Power Take Off) for the pump
  • Custom designed hydraulic manifold assembly, which uses an electronic proportional directional control valve
  • Dual pressure control which allows for pressure selection
  • Custom made hydraulic reservoir
  • Custom electronic control system, including a remote pendant with joystick control as well as a 2nd joystick located in the cab
  • Integrated electronic hand throttle for the engine
  • Quality winch and Parker hydraulic hose supplied with pressure test certification which can be traced throughout the Parker network using PTS system

The system operates in two work modes:

  • Lifting mode: capable of lifting up to 1550 Kg (SWL)
  • Self – recovery: capable of pulling 3600 Kg

The bespoke system is designed and manufactured completely in-house, fully – tested prior to despatch.

Grain ship-loader replacement electro-hydraulic control system

Thanks to the working relationship spanning many years, Rotec were invited to quote for the replacement of the hydraulic power unit and controls of the grain/feed products ship loader travelling gantry system. The client was faced with reliability and obsolescence issues with the original equipment dating back to the 1980s. It is the only plant capable of this function at the port and is in use constantly.

The ship loader hydraulic functions consist of a dual pumping system and associated hydraulic equipment built into an up-cycled twenty-foot shipping container. The container sits on the machine approximately 20 metres above dock level, which presented some unique access issues.

 Based on the original system design, Rotec designed and manufactured a complete self-contained hydraulic system and associated dedicated electrical control panels which control vertical and horizontal movements of the grain conveyors and loading chute to align over the vessel’s holds as required.

The container was specially modified to accept and fit the hydraulic system. This included full sound and fireproofing, internal full bunding and bespoke flooring and ventilation integration. The hydraulic system consists of a primary pump system driven by a 100KW 3300VAC electric motor and proportionally controlled variable displacement pump with a completely redundant secondary backup system in case of partial or total power loss. This 400VAC backup system is supplied from an external generator and is used to recover the chute off a vessel during a power loss when necessary. The main pump systems are supported by cooling and filtration systems and associated electrical control and monitoring equipment which in turn all interface and interlock to the main ship loader external control system.

21The project initially began in 2017, but project was temporarily halted by Brexit and later on, the outbreak of COVID-19. However, following a major fire one evening whilst in use on a vessel which completely destroyed the old containerised system, surrounding cabling and pipework, the project objectives and target completion date was rapidly brought forward to minimize the client’s downtime.

Due to our very flexible approach and ability to respond to an everchanging priorities list, Rotec was able to pick up and resume the build process quickly and managed to complete and factory test the unit ready for site delivery and install by the end of May. Our on-site engineers in the meantime stripped out and replaced large quantities of fire damaged external fixed stainless and special alloy tubing and replaced all external flexible hoses on the machine. The container unit and system were craned into place, pipework connections completed then flushed thoroughly. The system has now finished its commissioning and setting to work process, on time and on budget, and is ready to serve the port for this vital service for at least another 30 years minimum. The client is completely satisfied with the product and service received by him by our team of design, manufacturing, and field service personnel.

 

Portable Flushing Units

The Rotec Portable Flushing Unit performs a function that’s important for any hydraulic system: It flushes out and filters build-up of contaminants, leaving the system ready for use in minutes. It is crucial for maintenance, extends system lifetime, helps avoid repair costs and downtime. The unit can also be adjusted for fuel filtration and can be used for filling the system (filtering all the while).

This versatile unit is built into a trolley frame which makes it easily manoeuvrable and can often be found on keysides, decks or factory floors. The flushing unit is suitable for use in a variety of applications, including but not limited to: marine, industrial & off-shore.

The system is bespoke and can be tailored to your needs for use with a range of water-based control fluids or hydraulic mineral oils.

Technical Information of the system pictured:

  • Use: localised flushing on marine applications
  • Filtration: 10Q micron
  • Motor: 1.5Kw, 110v
  • Flow: 20 l/min
  • Pressure: up to 28 bar
  • Supplied with 5 metre suction and delivery hoses

Bespoke Winching System for Polaris 1000 HD ATV

Ever considered how Over Head Line maintenance teams get their tools ‘up’ on to pylons to enable them to carry out their work?  One answer is with Rotec Hydraulics’ help.

At Rotec Hydraulics the Team, work on many different projects.  Much of the work undertaken requires the integration of knowledge and skills from across the Rotec team, to deliver all of the elements that make up a client brief.

One such brief was to enable these incredibly gutsy all-terrain Polaris 1000 HD Rangers to help Over Head Line maintenance teams access their tools, whilst working off the beaten track and when needed at height. 

 For one utility company the skilled Rotec team designed, built and installed bespoke hydraulic and electric Capstan Winching Systems to a fleet of all-terrain vehicles, to enable utility staff to ‘winch up’ the items they need, when working at height.

The all-terrain Polaris 1000 HD Rangers are used daily to support overhead line operations in the utilities sector.  The low ground compact build of the Polaris is perfect to access difficult to reach areas when repairing or undertaking planned activity in the utility sector.  Their confined flatbed behind the cab, is ideal to hold and secure Rotec’s bespoke Hydraulic Power Pack, powering the Capstan Winch.  Electricity pylons are by the nature of their role, often positioned off the beaten track and are accessed across all sorts of terrain.

The whole winching system was designed, tested, built and attached to multiple vehicles by Rotec Hydraulics in their large workshop space at the Taunton branch using the skills of the specialist hydraulic Design, Build and Installation team.

The hydraulic and electric winching system ensures when these mighty little vehicles and crew reach challenging locations, they have everything needed to hoist tools up on to a pylon, to carry out overhead cable maintenance and repair work.

When in the middle of nowhere there are times when the utility company over headline maintenance staff will not be beside the winch system to physically push buttons, to engage the winding mechanism.  Therefore, when designing the power sources to operate the Capstan Winch, Rotec ensured the Hydraulic Power Packs could be petrol driven, alongside a battery to enable electric start and a remote electric start option for when personnel are perhaps in position up a pylon. 

An integrated cooling system and roll cage over the whole Capstan winching system unit adds overall protection to the investment as it is transported to site and used.  The complete winching system unit can be fully removed from the vehicle if and when required.

 As a further safety measure, Rotec engineers designed and manufactured a specially designed manually lowered ground anchor, to limit the ability of the vehicle to slide when the winch is engaged in more extreme winching situations.  The power Capstan winching system is designed to pull up to 350kg.

As part of the design and testing process Rotec also undertook the Finite Element Analysis (FEA) in support of the Lifting Operations & Lifting Equipment Regulations (LOLER).  Rotec ensures we provide the additional evidence within our design to ensure the vehicle conversion is strong, reliable and suited to the challenging environments in which it is designed to operate. 

The Rotec team is thrilled they enable others to reliably undertake time critical repairs and planned activity, all year round, in any conditions, at any height, to keep key utility services across the country operating. 

Are you looking for an alternative option to get something from A to B in a controlled way?  Rotec Hydraulics experienced team of Hydraulic, Pneumatic, Mechanical and Electrical engineers can help.  Please contact any of our locations across the south west for more information or assistance.

 

Date: 24/02/2020  Revised   Author: Carly Warren 

 

Defence Hose Assemblies

Hose Assemblies forJackal HMT

The Jackal HMT series is a supremely versatile platform with unparalleled cross‑country performance.

 Already well-proven in the harsh terrain of the Afghanistan battlefield, the 400 has a unique air suspension system that allows the selection of a variable ride height to match the terrain and also, enable internal loading within CH-47 Chinook.

 Rotec supported Babcock (DML) in 2009 with production of hose assemblies for the Jackal.

Rotec’s technical expertise, infrastructure and ability to utilise Parker technologies enabled the supply of the specialist hose kits suitable for hydraulic and auxiliary services. Kits were supplied fully assembled and tested.

Propeller Press

A customer who we have a longstanding relationship with requested a propeller press    re-fit for us ein the marine industry.

The customer supplied the framework, into which we incorporated a new valve block, fabricated a weld on bracket for gauge and a pressure relief valve and fit custom made hydraulic hoses as per technical drawings supplied by Rotec.

This bespoke piece of kit is going to Indonesia for use with straightening propeller shafts, to check propeller shafts are true.

Contact us today to see if we can assist you with your fluid power project: sales@rotec.net or 01823 348 900

Date: 8/10/19

Author: Sarka Humpolcova