INSTALLING HYDRAULIC POWER UNITS
CLIENT
Aggregate Industries
PROJECT
Hydraulic Power Units
LOCATION
Somerset, UK
THE BRIEF:
Commissioned by Aggregate Industries to install three 160kW hydraulic power units for the largest stone crusher in the UK.
the challenge
Derek Lane & Co were initially contacted by Aggregate Industries to investigate a hydraulic fault on a hydraulic power pack for a stone crusher at Torr Works Quarry in Somerset.
Our senior engineer attended the site, at short notice during a weekend, to investigate this issue. Within a few hours, it became clear that there was a problem with one of the three main hydraulic pumps being driven from three 160kW electric motors.
The pump performance was very low and not switching to the correct position. This was causing the crusher to unevenly lift its three feet, creating greater issues as the crusher is over six stories high.
The stone crusher is on track this year to have crushed six million tons of rock, and is mainly transported from site by 70 railway trains per week and taken to London for big construction projects in the capital.
the solution
After the initial fault-finding enquiry, our engineers were asked to attend a meeting at site to discuss their options. We were asked to investigate their system drawings and quote to install three new hydraulic power packs as our customer did not have a team in place to carry out a project of this scale.
We then had a window of two weeks, where the crusher could be shut down, to fit an auxiliary power pack and cap the main service lines to the hydraulic cylinders so that they could pressurise the lift cylinders with 70 bar pressure to give the crusher stability while crushing. This happened over an afternoon and they were back crushing later that day.
the outcome
The pump room was completely stripped and new flooring fitted to allow the three new power packs to be lifted into position and new pipework fitted. We had a one-day window to shut down the whole system and connect in the new auxiliary power packs to operate the leg stabilising pressure and the auxiliary conveyor controls.
What our client said
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