Crusher gets hydraulics uplift
A
Hy-Pro product story
Edited by the Engineeringtalk editorial team
Dec 22, 2005
Red Rhino further develops the hydraulics of its mobile compact crusher with help from Hy-Pro in Devon.
Red Rhino has further developed the hydraulics of its mobile compact crusher with help from Hy-Pro in Devon.
The mini crusher is used by contractors in building and construction, groundworks, site clearance and demolition for recycling waste building materials, kerbstones and other by-products to produce hardcore on site.
Hydraulics are central to the machines' design, powering all the main functions - crusher operation, crusher adjustment, main drive and materials flow.
The firm asked experts from Hy-Pro to review the design and suggest improvements.
"We developed the mini crusher because there was nothing like it on the market," Ben Latham, a Red Rhino founder, recalled.
"Our biggest problem has been building them fast enough".
There are five separate circuits in the Red Rhino hydraulic system.
These were controlled via a relatively large valve block, in which all the valves were manually controlled.
Field experience had shown that operatives could be confused by the number of valves.
"We asked Hy-Pro to look at simplifying the system and they came back to us with several alternatives to consider".
"The one we went for reduced the valve block to just two valves".
The crawler tracks are proprietary units based around a conventional hydraulic motor.
The crusher is configured as a single toggle jaw, in which one plate is held stationary while the other is rotated on an eccentric cam by a directly powered drum (or inside out) hydraulic motor.
Adjustment of this, to vary the size of the hardcore, is via a hydraulic ram positioning the bottom edges of the two jaw plates closer together or further apart.
Hy-Pro also redesigned the circuit layouts so that in effect the left and right hand sides of the machine were independent of each other and could work autonomously if necessary.
This means that if something serious goes wrong it will probably only affect one side, meaning the crusher can continue to operate until a repair can be arranged.
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