EP1483193B1 - Access platform - Google Patents

Access platform Download PDF

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Publication number
EP1483193B1
EP1483193B1 EP03708326A EP03708326A EP1483193B1 EP 1483193 B1 EP1483193 B1 EP 1483193B1 EP 03708326 A EP03708326 A EP 03708326A EP 03708326 A EP03708326 A EP 03708326A EP 1483193 B1 EP1483193 B1 EP 1483193B1
Authority
EP
European Patent Office
Prior art keywords
access platform
platform
telescopic ram
digger
excavator
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.)
Expired - Lifetime
Application number
EP03708326A
Other languages
German (de)
French (fr)
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EP1483193A1 (en
Inventor
Ian Maciver
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1483193A1 publication Critical patent/EP1483193A1/en
Application granted granted Critical
Publication of EP1483193B1 publication Critical patent/EP1483193B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements

Definitions

  • the present invention relates to an access platform and in particular to an access platform that is suitable for use with a standard digger or excavator.
  • Access platforms are employed when there is a requirement to provide an adaptable, portable and secure means for providing access for a user to carry out work at a specific height above ground level. Such platforms are often employed for access purposes within building sites or to aid in the instalment and repair of telephone and power lines.
  • a further disadvantage of such access platform designs is the fact that they tend to suffer problems of poor stability, particularly when used in times of bad weather.
  • US Patent No. 3,374,901 does however describe apparatus that attempts to overcome some of the above highlighted problems.
  • a vehicle that comprises a live boom is described wherein the live boom is employed as a support for a hoist track that uses a winch to control the position of a platform.
  • a further object of the present invention is to provide an access platform, suitable for use with a standard excavator or digger, that is capable of being manoeuvred in the vertical plane without any significant associated movement in the horizontal plane.
  • an access platform suitable for use with a hydraulic arm of a standard excavator or digger, the access platform comprising a platform and a connector configured to allow mechanical connection of the access platform to the hydraulic arm of a standard excavator or digger characterised in that the access platform further comprises a telescopic ram, having an axis of expansion that is orientated in a substantially vertical manner when the access platform is connected to the hydraulic arm of the standard excavator or digger, the platform being attached to the telescopic ram such that operation of the telescopic ram acts to translate the platform along the axis of expansion.
  • the access platform further comprising a base plate connected to an end of the telescopic ram wherein the base plate provides an anchor for the access platform.
  • the connector is configured to allow mechanical connection to a standard attachment system associated with the hydraulic arm of an excavator or digger.
  • the standard attachment system comprises a quick hitch attachment means.
  • the telescopic ram comprises one or more connectors suitable for attachment to one or more hydraulic fluid supply pipes associated with the excavator or digger.
  • the telescopic ram moves between a contracted position and an extended position under the control of a hydraulic pressure provided by the hydraulic fluid supply pipes.
  • the end of the telescopic ram is connected to the base plate via a pivot means and a hydraulic arm such that the operation of the hydraulic arm allows the axis of expansion of the telescopic ram to be rotated relative to the base plate.
  • the platform comprises a slewing basket such that the slewing basket pivots relative to the axis of expansion of the telescopic ram so as to maintain a base of the slewing basket in a substantially horizontal orientation.
  • Figure 1 presents an access platform 1, in accordance with an aspect of the present invention, in situ with the hydraulic arm 2 of an excavator.
  • the access platform 1 can be seen to comprise a base plate 3, a connection means 4, a telescopic ram 5 and a platform basket 6 that is attached to one end of the telescopic ram 5.
  • connection means 4 is attached to the hydraulic arm 2 via a standard quick hitch attachment 7.
  • the quick hitch attachment 7 also acts to secure the base plate 3 in position on the ground.
  • pipes 8 normally employed to provide hydraulic fluid to a hammer attachment are fixed to the telescopic ram 5 via connectors (not shown). These pipes 8 provide a hydraulic fluid supply to the telescopic ram 5 so enabling it to contract and extend as appropriate. The contraction and extension of the telescopic ram 5 allows the platform basket 6 to be manoeuvred in the vertical plane, as required.
  • the telescopic ram 5 may be attached to the base plate 3 by a pivot means.
  • the platform basket 6 would be replaced by a slewing basket.
  • An additional hydraulic arm could then be employed to rotate the telescopic ram about the horizontal plane so as to provide a degree of controllable movement of the access platform in the horizontal plane.
  • the employment of the slewing basket would provide the user with a horizontal platform from which to work even when the telescopic ram is tilted.
  • the access platform 1 is capable of extending to greater heights that those systems presently described in the Prior Art. It is envisaged that the vertical range offered by the telescopic ram 5 would be preselected, as appropriate, for a particular user.
  • Attaching the access platform 1 to the excavator can be achieved in a matter of minutes. Therefore, it can be quickly connected when required and thereafter removed when the user requires alternative attachments for the excavator.
  • the access platform 1 is a separate unit capable of employment with a standard excavator or digger it provides is far more cost effective access means than the cherry picker designs taught in the Prior Art.
  • the access platform 1 can be transported at the speed of the excavator or digger themselves which tend to have significantly higher speeds than the standard cherry picker vehicles.
  • the access platform 1 via the excavator or digger, exhibits further advantages in that these vehicles are far more suited for use on building site terrain where the grounds can be very soft. Therefore, the access platform can be deployed on terrain that is effectively inaccessible to the cherry picker vehicles.
  • the access platform 1 of the present invention also exhibits major advantages over the Prior Art designs that teach of platforms whose position is directly controlled by the position of the end of the hydraulic arm 2 associated with the excavator or digger. Once deployed the present invention allows the platform 1 to be moved to different heights without any significant movement in the horizontal plane. The absence of such horizontal movement removes any requirement on a user to reposition the associated excavator or digger so as to allow access at the new vertical level. In an alternative embodiment a controllable horizontal adjustment may be achieved through the tilting of the telescopic ram about a pivot means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)
  • Liquid Crystal Substances (AREA)
  • Telescopes (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Operation Control Of Excavators (AREA)
  • Foundations (AREA)

Abstract

An access platform that is suitable for use with a hydraulic arm of a standard digger or excavator is described. The access platform comprises a connection means, a telescopic ram and a platform, all of which are mounted on a base plate suitable for anchoring the platform on the ground. The design of the apparatus permits the platform to be moved in a vertical plane without any corresponding movement in a horizontal plane. Therefore, the access platform takes advantage of the manoeuvrability of standard diggers or excavators while allowing for accurate positioning of the platform.

Description

  • The present invention relates to an access platform and in particular to an access platform that is suitable for use with a standard digger or excavator.
  • Access platforms are employed when there is a requirement to provide an adaptable, portable and secure means for providing access for a user to carry out work at a specific height above ground level. Such platforms are often employed for access purposes within building sites or to aid in the instalment and repair of telephone and power lines.
  • The Prior Art teaches of separate mobile units designed for such purposes, referred to as "cherry pickers". These units incorporate hydraulic arms so as to move the access platform into the required position. However, such units are expensive and exhibit inherently slow transport speeds. In addition, they are often rendered redundant on building sites as they quickly become bogged down on soft ground.
  • Alternative access platform units described in the Prior Art are designed so as to enable incorporation with standard excavators or digger units, see for example US Patent No. 3,374,901, corresponding to the preamble of claim 1. Such units normally employ quick hitch coupling attachments and therefore allow for the associated buckets to be quickly interchanged with other attachments, for example a hammer attachment.
  • The employment of these designs of access platforms results in the position of the access platform being controlled directly by the position of the end of the hydraulic arm of the excavators or digger units. Thus a major drawback of this design is that it is not possible for a user to manoeuvre the access platform directly in the vertical plane without significant related movement occurring in the horizontal plane. Therefore, to manoeuvre the access platform for user access at different heights requires the entire associated excavator or digger unit to be repositioned.
  • A further disadvantage of such access platform designs is the fact that they tend to suffer problems of poor stability, particularly when used in times of bad weather.
  • US Patent No. 3,374,901 does however describe apparatus that attempts to overcome some of the above highlighted problems. In particular, a vehicle that comprises a live boom is described wherein the live boom is employed as a support for a hoist track that uses a winch to control the position of a platform.
  • It is an object of the present invention to provide an access platform, suitable for use with a standard excavator or digger, wherein the vertical position of access platform is not directly dependent upon the position of a hydraulic arm associated with the excavator or digger.
  • A further object of the present invention is to provide an access platform, suitable for use with a standard excavator or digger, that is capable of being manoeuvred in the vertical plane without any significant associated movement in the horizontal plane.
  • According to the present invention there is provided an access platform, suitable for use with a hydraulic arm of a standard excavator or digger, the access platform comprising a platform and a connector configured to allow mechanical connection of the access platform to the hydraulic arm of a standard excavator or digger characterised in that the access platform further comprises a telescopic ram, having an axis of expansion that is orientated in a substantially vertical manner when the access platform is connected to the hydraulic arm of the standard excavator or digger, the platform being attached to the telescopic ram such that operation of the telescopic ram acts to translate the platform along the axis of expansion.
  • Most preferably the access platform further comprising a base plate connected to an end of the telescopic ram wherein the base plate provides an anchor for the access platform.
  • Preferably the connector is configured to allow mechanical connection to a standard attachment system associated with the hydraulic arm of an excavator or digger.
  • Preferably the standard attachment system comprises a quick hitch attachment means.
  • Preferably the telescopic ram comprises one or more connectors suitable for attachment to one or more hydraulic fluid supply pipes associated with the excavator or digger.
  • Most preferably the telescopic ram moves between a contracted position and an extended position under the control of a hydraulic pressure provided by the hydraulic fluid supply pipes.
  • Optionally the end of the telescopic ram is connected to the base plate via a pivot means and a hydraulic arm such that the operation of the hydraulic arm allows the axis of expansion of the telescopic ram to be rotated relative to the base plate.
  • Optionally the platform comprises a slewing basket such that the slewing basket pivots relative to the axis of expansion of the telescopic ram so as to maintain a base of the slewing basket in a substantially horizontal orientation.
  • Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying Figures, in which:
    • Figure 1
    presents a side view of an access platform in situ with the hydraulic arm of an excavator or digger, in accordance with an aspect of the present invention;
    Figure 2
    presents a top view of the access platform of Figure 1; and
    Figure 3
    presents a side view of the access platform of Figure 1 manoeuvred to a position above ground level.
  • Figure 1 presents an access platform 1, in accordance with an aspect of the present invention, in situ with the hydraulic arm 2 of an excavator. The access platform 1 can be seen to comprise a base plate 3, a connection means 4, a telescopic ram 5 and a platform basket 6 that is attached to one end of the telescopic ram 5.
  • In order to deploy the access platform 1 the connection means 4 is attached to the hydraulic arm 2 via a standard quick hitch attachment 7. As well as providing a mechanical connection, the quick hitch attachment 7 also acts to secure the base plate 3 in position on the ground. Thereafter, pipes 8 normally employed to provide hydraulic fluid to a hammer attachment, as known to those skilled in the art, are fixed to the telescopic ram 5 via connectors (not shown). These pipes 8 provide a hydraulic fluid supply to the telescopic ram 5 so enabling it to contract and extend as appropriate. The contraction and extension of the telescopic ram 5 allows the platform basket 6 to be manoeuvred in the vertical plane, as required.
  • In an alternative embodiment (not shown) the telescopic ram 5 may be attached to the base plate 3 by a pivot means. In such an embodiment the platform basket 6 would be replaced by a slewing basket. An additional hydraulic arm could then be employed to rotate the telescopic ram about the horizontal plane so as to provide a degree of controllable movement of the access platform in the horizontal plane. The employment of the slewing basket would provide the user with a horizontal platform from which to work even when the telescopic ram is tilted.
  • By employing the telescopic ram 5 of the present invention the access platform 1 is capable of extending to greater heights that those systems presently described in the Prior Art. It is envisaged that the vertical range offered by the telescopic ram 5 would be preselected, as appropriate, for a particular user.
  • Attaching the access platform 1 to the excavator can be achieved in a matter of minutes. Therefore, it can be quickly connected when required and thereafter removed when the user requires alternative attachments for the excavator.
  • As the access platform 1 is a separate unit capable of employment with a standard excavator or digger it provides is far more cost effective access means than the cherry picker designs taught in the Prior Art. In addition the access platform 1 can be transported at the speed of the excavator or digger themselves which tend to have significantly higher speeds than the standard cherry picker vehicles.
  • Transportation of the access platform 1, via the excavator or digger, exhibits further advantages in that these vehicles are far more suited for use on building site terrain where the grounds can be very soft. Therefore, the access platform can be deployed on terrain that is effectively inaccessible to the cherry picker vehicles.
  • Furthermore, the access platform 1 of the present invention also exhibits major advantages over the Prior Art designs that teach of platforms whose position is directly controlled by the position of the end of the hydraulic arm 2 associated with the excavator or digger. Once deployed the present invention allows the platform 1 to be moved to different heights without any significant movement in the horizontal plane. The absence of such horizontal movement removes any requirement on a user to reposition the associated excavator or digger so as to allow access at the new vertical level. In an alternative embodiment a controllable horizontal adjustment may be achieved through the tilting of the telescopic ram about a pivot means.
  • Employing the quick release attachment 7 to secure the position of the base plate 3 provides the present invention with a further advantage over the Prior Art. Such a design significantly improves the overall stability of the access platform 1 relative to those platforms taught of in the Prior Art.
  • Although an exemplary embodiments of the present invention have been shown and described, it will be apparent to those having ordinary skill in the art that a number of changes, modifications or alterations to the invention described herein may be made, none of which depart from the invention as defined in the appended claims.

Claims (8)

  1. An access platform (1), suitable for use with a hydraulic arm (2) of a standard excavator or digger, the access platform (1) comprising a platform (6) and a connector (4) configured to allow mechanical connection of the access platform (1) to the hydraulic arm (2) of a standard excavator or digger
    characterised in that
    the access platform (1) further comprises a telescopic ram (5), having an axis of expansion that is orientated in a substantially vertical manner when the access platform (1) is connected to the hydraulic arm (2) of the standard excavator or digger; the platform (6) being attached to the telescopic ram (5) such that operation of the telescopic ram (5) acts to translate the platform (6) along the axis of expansion.
  2. An access platform (1) as claimed in Claim 1 wherein the connector (4) further comprising a base plate (3) connected to an end of the telescopic ram (5) wherein the base plate provides an anchor for the access platform (1).
  3. An access platform (1) as claimed in Claim 1 or Claim 2 wherein the connector (4) is configured to allow mechanical connection to a standard attachment system associated with the hydraulic arm (2) of an excavator or digger.
  4. An access platform (1) as claimed in Claim 3 wherein the standard attachment system comprises a quick hitch attachment (7).
  5. An access platform (1) as claimed in any of the preceding claims wherein the telescopic ram (5) comprises one or more connectors suitable for attachment to one or more hydraulic fluid supply pipes (8) associated with the excavator or digger.
  6. An access platform (1) as claimed in any of the preceding claims wherein the telescopic ram (5) moves between a contracted position and an extended position under the control of a hydraulic pressure provided by the hydraulic fluid supply pipes (8).
  7. An access platform (1) as claimed in any of Claims 2 to 6 wherein the end of the telescopic ram (5) is connected to the base plate (3) via a pivot means and a hydraulic arm such that the operation of the hydraulic arm allows the axis of expansion of the telescopic ram (5) to be rotated relative to the base plate (3).
  8. An access platform (1) as claimed in Claim 7 wherein the platform (6) comprises a slewing basket such that the slewing basket pivots relative to the axis of expansion of the telescopic ram (5) so as to maintain a base of the slewing basket in a substantially horizontal orientation.
EP03708326A 2002-03-01 2003-02-28 Access platform Expired - Lifetime EP1483193B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB0204861.9A GB0204861D0 (en) 2002-03-01 2002-03-01 Access platform
GB0204861 2002-03-01
PCT/GB2003/000849 WO2003074414A1 (en) 2002-03-01 2003-02-28 Access platform

Publications (2)

Publication Number Publication Date
EP1483193A1 EP1483193A1 (en) 2004-12-08
EP1483193B1 true EP1483193B1 (en) 2006-12-06

Family

ID=9932094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03708326A Expired - Lifetime EP1483193B1 (en) 2002-03-01 2003-02-28 Access platform

Country Status (8)

Country Link
US (1) US20050210715A1 (en)
EP (1) EP1483193B1 (en)
CN (1) CN1639053A (en)
AT (1) ATE347534T1 (en)
AU (1) AU2003212507A1 (en)
DE (1) DE60310207T2 (en)
GB (1) GB0204861D0 (en)
WO (1) WO2003074414A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103101860A (en) * 2012-11-15 2013-05-15 昆山市大金机械设备厂 Lifting type work platform
CN105197837B (en) * 2015-10-15 2017-10-31 湖州佳宁印刷有限公司 A kind of printed matter transports lowering or hoisting gear
CN105197847B (en) * 2015-10-15 2018-08-03 湖州佳宁印刷有限公司 A kind of hydraulic lifting system of printed matter
CN108716230B (en) * 2018-07-26 2023-10-03 江苏徐工工程机械研究院有限公司 engineering vehicle

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374901A (en) * 1965-05-06 1968-03-26 Ferwerda Ray Live boom supporting live boom or hoist track
US3817007A (en) * 1971-10-04 1974-06-18 Altec Mfg Co Inc Aerial lift mechanism
AU556891B2 (en) * 1982-12-21 1986-11-20 Thomas Stephan Wilman Mechanical grab
US4537281A (en) * 1984-10-09 1985-08-27 Fmc Corporation Two person aerial platform
US5116189A (en) * 1990-11-05 1992-05-26 Mohammad Shammout Loader bucket with power lift apparatus
US5732488A (en) * 1993-10-29 1998-03-31 Ephemere Pty. Ltd. Quick hitch assembly
DK172403B1 (en) * 1996-03-15 1998-05-18 Ole Flemming Broechmann Hydraulic actuator circuit for a lift-lowering system for a work table, reclining furniture or other heavy object
US5727645A (en) * 1996-05-03 1998-03-17 Glazer Enterprises, Inc. Aerial lift including a detachable end-hung basket
US6371314B1 (en) * 1998-06-15 2002-04-16 Patrick Boisvert Hoisting device for all terrain vehicle
US6145619A (en) * 1999-05-06 2000-11-14 Aerial Innovations Incorporated Foldable personnel basket for mobile equipment
US6244450B1 (en) * 1999-10-13 2001-06-12 Elliott Equipment Company Method and apparatus for telescoping boom with hydraulic extension actuators
US6471004B2 (en) * 2001-01-31 2002-10-29 Bil-Jax, Inc. Self locking basket assembly

Also Published As

Publication number Publication date
EP1483193A1 (en) 2004-12-08
AU2003212507A1 (en) 2003-09-16
DE60310207D1 (en) 2007-01-18
US20050210715A1 (en) 2005-09-29
ATE347534T1 (en) 2006-12-15
DE60310207T2 (en) 2007-11-22
WO2003074414A1 (en) 2003-09-12
GB0204861D0 (en) 2002-04-17
CN1639053A (en) 2005-07-13

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