US3882963A - Access equipment - Google Patents

Access equipment Download PDF

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Publication number
US3882963A
US3882963A US480249A US48024974A US3882963A US 3882963 A US3882963 A US 3882963A US 480249 A US480249 A US 480249A US 48024974 A US48024974 A US 48024974A US 3882963 A US3882963 A US 3882963A
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US
United States
Prior art keywords
boom
access equipment
equipment according
ladder
booms
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
US480249A
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English (en)
Inventor
Denis Henry Ashworth
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.)
Simon Engineering Dudley Ltd
Original Assignee
Simon Engineering Dudley 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 Simon Engineering Dudley Ltd filed Critical Simon Engineering Dudley Ltd
Application granted granted Critical
Publication of US3882963A publication Critical patent/US3882963A/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
    • E06C5/02—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
    • E06C5/04—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic
    • 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
    • B66F11/044—Working platforms suspended from booms
    • B66F11/046—Working platforms suspended from booms of the telescoping type

Definitions

  • ABSTRACT Access equipment for fire fighting purposes including an articulated boom structure having two booms, the structure being mounted on a turntable attached to a vehicle, each boom having ladder means extending along its length, a further ladder being telescopically extendible from either end selectively of the outermost boom of the boom structure to extend the reach of the equipment for any operative position of the booms.
  • SHEET 2 U? 2 ACCESS EQUEPMENT This invention concerns access equipment of the kind including an articulated boom structure mounted on a supporting structure such as a vehicle chassis and comprising a plurality of booms pivotally interconnected end to end, the outermost end of said boom structure being movable to an elevated position to provide access thereto.
  • the boom structure comprises two booms pivotally interconnected end to end and adapted to be stowed substantially horizontally in superimposed relationship when not in use, there being a cage or working platform mounted at the outermost end of the boom structure with a leveling device adapted to maintain the cage or platform in a level attitude for all positions of the booms.
  • This kind of equipment is particularly useful for fire fighting and rescue purposes where access to elevated positions is required. In many instances it is of considerably importance to provide an escape facility whereby access to or escape from an elevated position is possible irrespective of the ability of raise and lower the boom structure.
  • access equipment including an articulated boom structure pivotally mounted at one end on a supporting structure for manipulation relative thereto, and comprising a plurality of articulated booms each of which is equipped with ladder means extending along its length, there being further ladder means telescopically extendible from either end of the outermost boom of the boom structure.
  • FIG. 1 is a schematic side elevation of one form of access equipment made in accordance with the invention
  • FIG. 2 is an enlarged section taken on line Illl of FIG. 1;
  • FIG. 3 is a schematic end elevation of the equipment illustrating the boom structure in two operational positions.
  • the equipment generally comprises a vehicle 16) upon which is mounted a boom structure 11 having a first or lower boom 12 pivotally mounted at one end on an upward extension 13 of a turntable 14.
  • a second or upper boom 15 is pivotally connected at one end to the free end of the boom 12 and thus forms the outermost boom carrying at its own free end a cage or working platform 16 for personnel.
  • the articulated boom structure so formed is capable of being manipulated from a stowed position with the two booms substantially horizontal and superimposed as indicated in FIG. 1, the second boom being stowed beneath the first, thus to raise the cage 16 to an elevated position.
  • Hydraulic rams 22 are provided for causing pivotal movement of the boom relative to each other and relative to the extension 13 of the turntable 14. The rarns are actuated by suitable control valves positioned on the cage and on the vehicle.
  • a movable ladder 19 is mounted within the second boom 15 and is telescopically extendible linearly from each end thereof and supported thereby. Movement of the ladder 19 can be effected by an electric motor, for example. Ladder rungs 20 are fixed in spaced relationship along the booms 12 and 15.
  • a further movable ladder 21 which serves as a landing ladder is associated with the first boom 12 and is arranged when the boom structure is elevated, to extend downwardly from the lower end of the first boom to the ground as shown in FIG. 3.
  • the ladder 21 may be slidably mounted relative to the boom 12 in a similar manner to the ladder 19 or it can be pivotally mounted at one end on the lower end of the first boom. Furthermore the ladder 21 may be detachable and stored when not in use on the vehicle.
  • a nozzle or monitor 17 for emitting a jet of water or other fluid.
  • Water can be supplied to the nozzle 17, for example, by a conventional flexible hose or be rigid pipes carried by the booms and connected by rotating pipe joints.
  • Means (not shown) are provided for maintaining the cage 16 level for all configurations of the boom structure.
  • FIG. 3 there are four general operational conditions which the boom structure can assume to provide a manual escape facility.
  • the shortest escape facility is provided, with the boom 12 and 1S superimposed, by elevation of the first boom 12 to any required disposition within its permitted vertical and horizontal arc of movement.
  • These arcs can be increased to provide a second condition by extending the movable ladder 19 from the end of the second boom remote from the cage 16, as indicated by the arrow X in FIG. 3..
  • the third condition is effected by retracting the ladder 19 within the boom 15 and by pivotally extending the boom 15 relative to the boom 12.
  • a further increase to provide the fourth condition can then be effected by extending the movable ladder 19 from the end of the boom 15 adjacent the cage 16 as indicated by the arrow Y in FIG. 3.
  • an operator can be positioned in the cage or platform for operating the nozzle 17 to direct a bet of water or other fire fighting medium therefrom.
  • the nozzle 17 can be remotely controlled from the vehicle.
  • any boom structure is determined by the collective weight of the booms together with the weight of the cage and that of any personnel normally to occupy the latter, in relation to the weight and supporting capabilities of the vehicle, and this determination is made for a position of the boom structure creating the maximum potential instability.
  • a two-boom arrangement would be provided on a vehicle capable of carrying such an arrangement and a three-boom arrangement would necessarily require a vehicle having a larger supporting area.
  • the arrangement wherein the second boom is disposed beneath the first boom in the stowed position serves to enable the cage to be moved along a horizontal line from its stowed position to the full horizontal reach of the boom structure. Also with such a boom configuration there will always be, for all positions of the booms, a continuous escape facility without the necessity of providing a landing at the knuckle joint between the booms.
  • Access equipment is mounted on a vehicle chassis.
  • the ladder rungs 20 instead of being fixed to the booms themselves, may form part of separate ladder members disposed within the booms and, if desired, hinged relative thereto thus to stand off from the booms parallel thereto.
  • Access equipment including an articulated boom structure pivotally mounted at one end on a supporting structure for manipulation relative thereto, and comprising a plurality of articulated booms each of which is equipped with ladder means extending along its length, there being further ladder means telescopically extendible from either end of the outermost boom of the boom structure.
  • Access equipment including a monitor mounted in the outermost end region of the outermost boom, there being means for the supply of fluids to said monitor along the length of the boom structure.
  • Access equipment according to claim 8 wherein said monitor isremotely operable.
  • drive means areprovided for said further ladder means.
  • Access equipment according to claim 1 including a landing ladder adapted to extend from the supported 13. Access equipment according to claim 12 wherein Q Usaid landing ladder is telescopically extendible from 3. Access equipment according to claim 2 wherein said boom structure can be manipulated from a stowed position wherein the two booms extend in a substanwithin said innermost boom.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Ladders (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Jib Cranes (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
US480249A 1973-06-27 1974-06-17 Access equipment Expired - Lifetime US3882963A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3069973A GB1440804A (en) 1973-06-27 1973-06-27 Access equipment

Publications (1)

Publication Number Publication Date
US3882963A true US3882963A (en) 1975-05-13

Family

ID=10311746

Family Applications (1)

Application Number Title Priority Date Filing Date
US480249A Expired - Lifetime US3882963A (en) 1973-06-27 1974-06-17 Access equipment

Country Status (13)

Country Link
US (1) US3882963A (enrdf_load_html_response)
BE (1) BE816890A (enrdf_load_html_response)
CA (1) CA984769A (enrdf_load_html_response)
CH (1) CH587777A5 (enrdf_load_html_response)
DE (1) DE2431286A1 (enrdf_load_html_response)
ES (1) ES427694A1 (enrdf_load_html_response)
FR (1) FR2235261B1 (enrdf_load_html_response)
GB (1) GB1440804A (enrdf_load_html_response)
IT (1) IT1015502B (enrdf_load_html_response)
NL (1) NL7408604A (enrdf_load_html_response)
NO (1) NO136111C (enrdf_load_html_response)
SE (1) SE390162B (enrdf_load_html_response)
ZA (1) ZA743877B (enrdf_load_html_response)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090038885A1 (en) * 2005-06-16 2009-02-12 Nathan John Ellement Vehicle access system
FR2995598A1 (fr) * 2012-09-19 2014-03-21 Ultralu Dispositif pour le travail en elevation comprenant un mecanisme de deploiement simplifie
CN104098053A (zh) * 2013-04-10 2014-10-15 依维柯马基路斯公司 架空系统，特别是转台云梯系统

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012602A1 (en) * 1978-12-12 1980-06-25 John Laing Services Limited Access apparatus having a plurality of booms
CA1267394A (en) * 1989-05-31 1990-04-03 Janis R. Vitols Ladder support
FR2718789B1 (fr) * 1994-04-18 1996-07-05 Patrick Jacobee Dispositif de manÓoeuvre d'échelle à coulisse.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262517A (en) * 1964-11-18 1966-07-26 Jerry P Malec Bridge crane
US3396814A (en) * 1966-06-13 1968-08-13 Edward V. Garnett Power ladder and safety device for workman's basket
US3584703A (en) * 1968-06-07 1971-06-15 Simon Eng Dudley Ltd Hydraulic platforms
US3800912A (en) * 1971-08-13 1974-04-02 Simon Eng Dudley Ltd Access equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262517A (en) * 1964-11-18 1966-07-26 Jerry P Malec Bridge crane
US3396814A (en) * 1966-06-13 1968-08-13 Edward V. Garnett Power ladder and safety device for workman's basket
US3584703A (en) * 1968-06-07 1971-06-15 Simon Eng Dudley Ltd Hydraulic platforms
US3800912A (en) * 1971-08-13 1974-04-02 Simon Eng Dudley Ltd Access equipment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090038885A1 (en) * 2005-06-16 2009-02-12 Nathan John Ellement Vehicle access system
US9238941B2 (en) * 2005-06-16 2016-01-19 Barjoh Pty Ltd Vehicle access system
FR2995598A1 (fr) * 2012-09-19 2014-03-21 Ultralu Dispositif pour le travail en elevation comprenant un mecanisme de deploiement simplifie
CN104098053A (zh) * 2013-04-10 2014-10-15 依维柯马基路斯公司 架空系统，特别是转台云梯系统
US20140305738A1 (en) * 2013-04-10 2014-10-16 Iveco Magirus Ag Aerial system, in particular turntable ladder system
US9523237B2 (en) * 2013-04-10 2016-12-20 Iveco Magirus Ag Aerial system, in particular turntable ladder system

Also Published As

Publication number Publication date
GB1440804A (en) 1976-06-30
BE816890A (fr) 1974-10-16
CA984769A (en) 1976-03-02
ZA743877B (en) 1976-02-25
NO136111C (no) 1977-08-03
NL7408604A (enrdf_load_html_response) 1974-12-31
IT1015502B (it) 1977-05-20
SE390162B (sv) 1976-12-06
FR2235261B1 (enrdf_load_html_response) 1980-03-14
DE2431286A1 (de) 1975-01-16
SE7408364L (enrdf_load_html_response) 1974-12-30
NO136111B (enrdf_load_html_response) 1977-04-12
CH587777A5 (enrdf_load_html_response) 1977-05-13
NO742212L (enrdf_load_html_response) 1975-01-20
ES427694A1 (es) 1976-11-16
FR2235261A1 (enrdf_load_html_response) 1975-01-24

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