GB2289490A - Vibratory compaction apparatus - Google Patents

Vibratory compaction apparatus Download PDF

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Publication number
GB2289490A
GB2289490A GB9410124A GB9410124A GB2289490A GB 2289490 A GB2289490 A GB 2289490A GB 9410124 A GB9410124 A GB 9410124A GB 9410124 A GB9410124 A GB 9410124A GB 2289490 A GB2289490 A GB 2289490A
Authority
GB
United Kingdom
Prior art keywords
chassis
base plate
drive motor
generating unit
vibration generating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9410124A
Other versions
GB9410124D0 (en
Inventor
Ian M Wright
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mawsley Machinery Ltd
Original Assignee
Mawsley Machinery Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mawsley Machinery Ltd filed Critical Mawsley Machinery Ltd
Priority to GB9410124A priority Critical patent/GB2289490A/en
Publication of GB9410124D0 publication Critical patent/GB9410124D0/en
Publication of GB2289490A publication Critical patent/GB2289490A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02Improving by compacting
    • E02D3/046Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/30Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
    • E01C19/34Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
    • E01C19/38Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight with means specifically for generating vibrations, e.g. vibrating plate compactors, immersion vibrators

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Architecture (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

A vibratory compaction apparatus, particularly suitable for use in mines comprises a base plate (4) on which rests a chassis (2) by way of anti-vibration mountings (9). A drive motor (3) is mounted on the chassis (2) and is connected to a vibration generating unit (8) by a suitable drive connection. The base plate, vibration generating unit, chassis and drive motor are electrically interconnected to prevent the build-up of static electric charge during operation of the apparatus. Neither the chassis, the base plate or the vibration generating unit contain aluminium components, and the drive motor is of a type acceptable for use in coal mines, e.g. a hydraulic or air powered motor. <IMAGE>

Description

VIBRATORY COMPACTION APPARATUS This invention relates to vibratory compaction apparatus, that is to say compaction apparatus in which vibrations are generated and applied to the material to be compacted. Such apparatus is commonly used for compacting foundation materials for roads and paths.
Whilst the use of vibratory compaction apparatus, and in particular plate vibrators, is well known within the civil engineering industry, such apparatus has not, heretofore, been suitable for use in confined or hazardous environments, in particular in underground mining operations. Particularly, known plate vibrators have made use of internal combustion engines which render them unsuitable for underground use. However, even if the internal combustion engine is replaced by a motor approved for underground operation known devices are still not suitable for underground use because of incorporation of aluminium components in known apparatus and the danger that known apparatus may give rise to the accumulation of static electricity with the resultant danger of static electric discharge underground.
In accordance with one aspect of the present invention a vibratory compaction apparatus comprises a chassis on which is mounted a drive motor suitable for use in a coal mine, a base plate on which the chassis rests by way of anti-vibration mountings; and a vibration generating unit mounted on the base plate to be driven by the drive motor; the base plate, vibration generating unit, chassis and drive motor being electrically interconnected to prevent the build-up of static electric charge during operation of the apparatus.
Preferably, in order to meet approval standards laid down by coal-mining authorities neither the chassis, the drive motor, the base plate, the vibration generating unit or other components, e.g. horses, filters and ancillary items incorporate aluminium components.
The drive motor may, conveniently, be an air motor, a hydraulic motor, or an electric motor of a type suitable for underground use.
The invention will be better understood from the following description of the preferred embodiment thereof, given by way of example only, reference being had to the accompanying drawing which illustrates schematically a preferred embodiment of the invention.
Referring to the drawing, the illustrated vibratory compaction apparatus 1 comprises a chassis 2 on which is mounted a drive motor 3 of a type suitable for underground use. Conveniently, the drive motor 3 may be a hydraulic motor or an air motor. In the preferred embodiment of the invention the motor is an air vane motor having an output of 4kW at a rotational speed of 3000 rpm.
In contrast to plate vibrators commonly used in civil engineering, the chassis 2 of the apparatus 1 is fabricated without the use of aluminium and, in particular, is preferably fabricated from steel and may conveniently be based on a subframe of heavy gauge mild steel plate of approximately 1Omm thick.
The chassis 2 is mounted on a base plate 4 which, again, is preferably fabricated without the use of aluminium components. As is conventional, the base plate includes a flat central region 5 and sloping end regions 6, 7 to facilitate both forward and rearward movement of the apparatus over a surface to be compacted.
A vibration generating unit 8 is mounted on the base plate 5 and is driven from the motor 3 by way of a suitable drive connection, for example a V-belt drive. The vibration generating unit 8, when operating, induces vibrations in the base plate 5 to produce both compaction of the material under the base plate 5 and horizontal movement of the apparatus. Preferably, the direction of rotation of the vibration generating unit is reversible so that both forward and rearward movement of the apparatus is readily possible.
The chassis 2 is mounted on the base plate 5 by means of anti-vibration mountings 9.
A handle 10 is secured to the chassis and carries an on/off control 11 and a forward/reverse control 12. The on/off control is preferably spring loaded to the "off" position.
In addition to being fabricated substantially without the use of aluminium components care is taken in production of the apparatus to avoid the build up of static electricity which could give rise to static electric discharge resulting in the production of a spark. To this end, the anti-vibration mountings 9 are preferably electrically conductive and/or a separate electrical connection is provided between the base plate 5 and the chassis 2. Similarly, all the remaining metal components of the apparatus between which relative movement may occur are electrically interconnected to prevent the build-up of static electricity.

Claims (4)

1. A vibratory compaction apparatus comprising a chassis on which is mounted a drive motor suitable for use in a coal mine, a base plate on which the chassis rests by way of anti-vibration mountings; and a vibration generating unit mounted on the base plate to be driven by the drive motor; the base plate, vibration generating unit, chassis and drive motor being electrically interconnected to prevent the build-up of static electric charge during operation of the apparatus.
2. A vibratory compaction apparatus according to claim 1 wherein neither the chassis, the drive motor, the base plate, or the vibration generating unit are of aluminium nor incorporate aluminium components.
3. A vibratory compaction apparatus according to claim 1 or claim 2 wherein the drive motor is an air motor or a hydraulic motor.
4. A vibratory compaction apparatus substantially as hereinbefore described with reference to the accompanying drawings.
GB9410124A 1994-05-20 1994-05-20 Vibratory compaction apparatus Withdrawn GB2289490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9410124A GB2289490A (en) 1994-05-20 1994-05-20 Vibratory compaction apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9410124A GB2289490A (en) 1994-05-20 1994-05-20 Vibratory compaction apparatus

Publications (2)

Publication Number Publication Date
GB9410124D0 GB9410124D0 (en) 1994-07-06
GB2289490A true GB2289490A (en) 1995-11-22

Family

ID=10755454

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9410124A Withdrawn GB2289490A (en) 1994-05-20 1994-05-20 Vibratory compaction apparatus

Country Status (1)

Country Link
GB (1) GB2289490A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0855470A2 (en) * 1997-01-28 1998-07-29 Wacker Corporation Vibratory plate machine
EP1267001A1 (en) * 2001-06-14 2002-12-18 Swepac International AB Compactor with vibrating bottom plate
CN105332333A (en) * 2015-11-26 2016-02-17 宁波市鄞州飞虎机械有限公司 Flat-plate rammer
US9988770B1 (en) 2016-12-02 2018-06-05 Caterpillar Inc. Impact wear plates for vibratory plate compactor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242809A1 (en) * 1986-04-23 1987-10-28 Dynapac Light Equipment AB Device for self-propelled hand-operated vibrating plate and process for using said device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242809A1 (en) * 1986-04-23 1987-10-28 Dynapac Light Equipment AB Device for self-propelled hand-operated vibrating plate and process for using said device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0855470A2 (en) * 1997-01-28 1998-07-29 Wacker Corporation Vibratory plate machine
EP0855470A3 (en) * 1997-01-28 1998-09-23 Wacker Corporation Vibratory plate machine
EP1267001A1 (en) * 2001-06-14 2002-12-18 Swepac International AB Compactor with vibrating bottom plate
CN105332333A (en) * 2015-11-26 2016-02-17 宁波市鄞州飞虎机械有限公司 Flat-plate rammer
US9988770B1 (en) 2016-12-02 2018-06-05 Caterpillar Inc. Impact wear plates for vibratory plate compactor

Also Published As

Publication number Publication date
GB9410124D0 (en) 1994-07-06

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)