Vibratory Excavator Attachments
Aldridge Piling, offer the Dawson EMV70 and EMV300 range of excavator mounted vibrator. These are purpose built piling vibrators, designed to be excavator mounted. Unlike vibratory compactors, these have two sets of eccentric weights, producing a purely vertical force.
Overview
- These are the most common form of piling equipment used in the UK.
- All units operate at high frequency, the frequency decreasing with vibrator size.
- High centrifugal forces, up to 40 tonnes, with high amplitudes up to 14.4mm.
- High power to weight ratio, much higher than vibratory compactors.
- Ideal for loose granular soils, although less effective in dense cohesive soils.
- Same unit can drive and extract.
- Can be mounted onto excavators as small as 5 tonnes.
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Advantages
- Much quieter than air hammers
- No compressor required
- Same unit can drive and extract sheets – no modifications required.
- Slender design can drive between sheets.
- Fits common excavator sizes.
- Extremely fast at installing sheets in granular and sandy soils.
- Low weight, productivity increased through excavator down crowd.
- Competitive rates, no powerpack duplication.
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Disadvantages
- Single pin linkage – not a rigid connection.
- Requires a bi-directional supply for clamp – grab circuit.
- Not always compatible for use with Quick Hitches.
- Moderate levels of ground vibration – settlement problems can occur.
- Poor at installing piles into dense or cohesive soils.
- Limited length of pile that can be driven, due to excavator height restrictions.
- Sheet damage can occur, if excavator push not controlled.
- Not typically a fast attachment to fit and therefore can tie-up an excavator, so not suited to work where it needs to be repeatedly disconnected.
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Environmental
- Substantially lower noise than air hammers typically around 94 dBA eq at 10 metres (Arcelor Publication).
- High efficiency with high forces, yet small equipment.
- Disturbance through sympathetic vibration of soil and buildings. Resonance can still occur during start up and shut down.
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The table below is a rough guide to vibrator selection in terms of pile type, for other pile types please call APE.
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Main range |
Alternate products available |
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EMV70 |
EMV300 |
ICE 230B/m |
ICE 328B/m |
MS3 |
MS4 |
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Trench Sheeting |
Light & Medium Duty |
Medium & Heavy Duty |
Medium and Heavy Duty |
Medium and Heavy Duty |
Medium and Heavy Duty |
Heavy Duty only |
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Steel Piles |
No |
Yes |
Yes |
Yes |
Yes |
Yes |
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Plastic Piling |
Yes, direct, or with caps, sleeves |
Only with Mandrels |
Only with full mandrel |
Only with full mandrel |
Only with full mandrel |
Only with full mandrel |
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Timber Posts |
With cap up to 200 mm |
With Cap up to
250 mm |
With Cap up to
250 mm |
With Cap up to
250 mm |
With Cap up to
250 mm |
With Cap up to
300 mm |
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Armco Sections |
Yes
With or without cap |
Yes
With or without cap |
Yes, with Cap |
Yes with Cap |
Yes with Cap |
No |
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Tubes and H Sections |
Yes
With or without cap |
Yes
With or without cap |
Yes with or without cap |
Yes with or without cap |
Yes with or without cap |
Yes with or without cap |
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Relevant Publications
Full information Brochure
Operating Instructions
Hirers responsibilities when using non-operated plant
Health & Safety
Modeling of Vibrator Pile Driving
Vibrators and Ground Settlement
Ground Vibration general information
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