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US3800912A - Access equipment - Google Patents

Access equipment Download PDF

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Publication number
US3800912A
US3800912A US00274247A US3800912DA US3800912A US 3800912 A US3800912 A US 3800912A US 00274247 A US00274247 A US 00274247A US 3800912D A US3800912D A US 3800912DA US 3800912 A US3800912 A US 3800912A
Authority
US
United States
Prior art keywords
boom
booms
landing
access equipment
ladders
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
US00274247A
Other languages
English (en)
Inventor
D 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 US3800912A publication Critical patent/US3800912A/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
    • B66F11/044—Working platforms suspended from booms

Definitions

  • ABSTRACT Access equipment having an articulated boom structure comprising two or more booms pivoted end to end, the lowermost boom being pivotally mounted on a supporting structure such as a vehicle, the boom structure being movable between a stowed position wherein said boom are located adjacent the supporting structure and a working position wherein the free end of the boom structure is raised to an elevated position above the supporting structure, characterised by the provision of a ladder extending alongside each of a pair of adjacent booms, said ladders being arranged on opposite sides respectively of said pair of booms and there being a landing at the knuckle joint between said booms and extending between the two ladders so as to provide easily negotiable means for a person to pass from one ladder to the other.
  • This invention concerns access equipment of the kind (hereinafter termed of the kind referred to) having an articulated boom structure comprising two or more booms pivoted'end to end, the lowermost boom being pivotally mounted on a supporting structure such as a vehicle, the boom structure being movable between a stowed position wherein said booms are located adjacent the supporting structure and a working position wherein the free end of the boom structure is raised to an elevated position above the supporting structure.
  • Access equipment of the kind referred to is frequently provided with a working platform or cage on the free end of the boom structure which can be manned by an operator or alternatively is provided with equipment on the free end of the boom structure which may require an operator's attendance from time to time.
  • Access equipment of the kind referred to is known wherein a ladder extends alongside each boom to serve as a continuous access or escape facility whereby personnel can climb up or down the boom structure between the free end thereof and the ground or other safe landing area, and whereby an operator can escape from the freeend of the boom structure in the event of failure of the system 'used to lower same.
  • the ladders are disposed on the same or opposite sides of adjacent booms.
  • a problem with such a ladder arrangement lies in the difficulty which is encountered in crossing over from one ladder to the next at the knuckle joint between adjacent booms. This is particularly prevalent with unskilled personnel and makes the ladder arrangement unsuitable for rescuing persons from a burning building for example. Such persons can, of course, be rescued by loading them into a cage at the free end of the boom structure and lowering the structure, but in many instances it is desirable to have a continuous escape facility as is provided by a conventional fire fighting ladder.
  • access equipment of the kind referred to is characterised by the provision of a ladder extending alongside each of a pair of adjacent booms, said ladders being arranged on opposite sides respectively of said pair of booms and there being a landing at the knuckle joint between said booms and extending between the two ladders so as to provide easily negotiable means for a person to pass from one ladder to the other.
  • said landing forms part of or is connected with a parallelogram-type linkage whereby the landing is maintained level for any angular separation of the adjacent booms.
  • FIG. 1 is a side elevation of the equipment
  • FIG. 2 is a perspective view of part of the equipment of FIG. 1; I
  • FIG. 3 is a cross section through the equipment on the line IIIIII of FIG. 2 and showing the ladder means in an operative position;
  • FIG. 4 is a view similar to FIG. 2 but with the ladder means in a stowed position.
  • the equipment comprises a vehicle 10 having a turntable structure 11 mounted thereon which provides a supporting structure for a first boom 12 pivoted to the turntable structure 11 at 13.
  • a second boom 14 is pivoted at 15 to the upper end of the first boom 12, and the free end of the boom 14 carries a working platform or cage 16 pivotally connected thereto.
  • Hydraulically operable cylinders 17 and 18 enable the first boom 12 to be pivoted with respect to the turntable 1 1 and the second boom 14 to be pivoted with respect to the first boom 12 respectively, whereby the cage 16 can be raised and lowered between an elevated working position and a stowed position adjacent the vehicle 10 when the booms 12 and 14 are disposed in parallel horizontal relationship overlying the vehicle 10.
  • Ladders 19 and 20 are provided and extend alongside the booms l2 and 14 respectively, each on the opposite side of the pair of booms from the other.
  • Each ladder is hingedly connected along its length with its associated boomandprovided with handrail means 21.
  • each ladder can be folded between a working'position (as shown in FIGS. 2 and 3) and a stowed position (as shown in FIG. 4) wherein the ladder and handrail means lie in juxtaposed relationship respectively with two sides of its associated boom.
  • a landing 22 providing easily negotiable means whereby a person may pass from one ladder to the other is connected with the boom structure at the knuckle joint between the booms l2 and 14.
  • the landing 22 is pivotally connected with the boom 12 at 15.
  • a rod 23 extends between the landing 22 and turntable structure 11 and is pivotally connected therewith at 24 and 25 respectively.
  • the turntable structure 11, boom 12, rod 23 and landing 22 form a parallelogram-linkage (the points 15, 24, 13 and .25 being located at the corners of a parallelogram) whereby the landing 22 is maintained horizontally disposed throughout angular movement of the boom 12 relative to the turntable structure 11.
  • a further parallelogram-linkage comprised by the boom 14, cage 16, landing 22 and connecting rod 26 serves to maintain the cage 16 level for any positions of the booms l2 and 14.
  • the equipment provides readily negotiable means for personnel to climb between the cage and the vehicle when the cage is in an elevated position and more particularly provides a continuous escape facility for rescuing persons from elevated positions which can be used by all but infants, the aged, or the infirm.
  • the boom structure may comprise more than two booms, a ladder being provided for each boom and a landing being provided at the junction between each pair of ladders.
  • the vehicle should be provided with extendable and retractable ground engaging jacks to give the necessary stability to the vehicle to support the boom structure in all of its elevated working positions.
  • Access equipment comprising a boom assembly wherein upper and lower booms are transversely pivotally interconnected at a knuckle joint, said booms being relatively movable about the pivot at said joint between a folded position and an extended position wherein said upper boom extends upwardly from an end of the lower boom, ladders mounted on and extending substantially the length of each boom, said ladders being disposed on opposite sides of the respective booms and having adjacent ends at said knuckle joint spaced apart transversely of the boom assembly, and means providing a landing mounted on said boom assembly at said knuckle joint extending transversely of the boom assembly substantially between the adjacent ladder ends whereby to provide easily negotiable access between said ladders in the extended position of said booms.
  • Access equipment as defined in claim 1 wherein said landing is pivotally mounted on said lower boomv 3.
  • Access equipment as defined in claim 2, comprising a vehicle turntable on which the lower boom as pivoted at the end opposite said knuckle joint, and a rod pivotally connected at opposite ends between said turntable and said landing to form a parallelogram linkage system whereby said landing is maintained substantially level during relative angular movements of said booms.
  • Access equipment as defined in claim 1, wherein a working platform is pivotally mounted upon the free end of said upper boom adjacent the end of the ladder mounted on that boom.
  • Access equipment as defined in claim 4, comprising a parallelogram linkage system that includes said landing and is connected to said working platform whereby both said landing and said working platform are maintained substantially level for any relative angular positions of said booms.
  • each of said ladders is provided with a handrail.
  • each of said ladders is hingedly connected with its associated boom along its length whereby it can be folded between an operative position and a stowed position wherein the ladder and the handrail are juxtaposed with two sides of its associated boom respectively.
  • Access equipment as defined in claim 1, comprising a parallelogram linkage system that includes said landing as an element thereof whereby said landing is maintained substantially level for any relative angular positions of said booms.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
US00274247A 1971-08-13 1972-07-24 Access equipment Expired - Lifetime US3800912A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3818171 1971-08-13

Publications (1)

Publication Number Publication Date
US3800912A true US3800912A (en) 1974-04-02

Family

ID=10401772

Family Applications (1)

Application Number Title Priority Date Filing Date
US00274247A Expired - Lifetime US3800912A (en) 1971-08-13 1972-07-24 Access equipment

Country Status (7)

Country Link
US (1) US3800912A (de)
JP (1) JPS5542040B2 (de)
AT (1) AT328661B (de)
CA (1) CA955214A (de)
DE (1) DE2239868C2 (de)
FI (1) FI52211C (de)
GB (1) GB1337154A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882963A (en) * 1973-06-27 1975-05-13 Simon Eng Dudley Ltd Access equipment
US3910264A (en) * 1973-04-10 1975-10-07 Mecaniques Du Douaisis Sa Atel Passenger loading ramp
US4157742A (en) * 1977-07-18 1979-06-12 Marine Aluminum Aanensen & Co. A/S Accommodation ladder arrangements
US4911263A (en) * 1989-08-01 1990-03-27 Aryeh Kuperman Ambulatory ladder
US20080236065A1 (en) * 2007-03-26 2008-10-02 Conservano Guy A Modular concrete stair truss system
US20100140016A1 (en) * 2007-07-24 2010-06-10 Esko Raappana Vehicle and a lifting arm assembly
US20100276227A1 (en) * 2007-03-19 2010-11-04 Patriot3, Inc. Tactical vehicle with line deployment tower
US20130047352A1 (en) * 2010-03-16 2013-02-28 Graham Corfield Access unit
CN103950874A (zh) * 2014-05-20 2014-07-30 毕和军 折叠式高空消防救援装置
CN106075777A (zh) * 2016-07-29 2016-11-09 张帅 无人驾驶救援车
US10625853B2 (en) 2016-07-01 2020-04-21 Textron Innovations Inc. Automated configuration of mission specific aircraft
US10633087B2 (en) 2016-07-01 2020-04-28 Textron Innovations Inc. Aircraft having hover stability in inclined flight attitudes
US11267403B2 (en) 2015-02-24 2022-03-08 Bnj Leasing Inc Mobile refueling vessel
US20240294368A1 (en) * 2022-10-04 2024-09-05 Altec Industries, Inc. Electrical insulation liner for aerial lift platform door

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5341948Y2 (de) * 1974-01-19 1978-10-09
JPS5420239Y2 (de) * 1974-11-12 1979-07-23
JPS608625B2 (ja) * 1975-09-26 1985-03-04 日本電気株式会社 半導体装置の特性試験装置
EP0012602A1 (de) * 1978-12-12 1980-06-25 John Laing Services Limited Hebebühne mit mehreren Auslegern
JPS59139640A (ja) * 1983-01-31 1984-08-10 Ando Electric Co Ltd 集積回路測定装置
DE3437625A1 (de) * 1984-10-13 1986-04-24 Georg 6200 Wiesbaden Füreder Variable geraeteanlage selbstaendig oder/und zur unterstuetzung und versorgung elevierbarer systeme verwendbar

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3252542A (en) * 1963-12-13 1966-05-24 Walter E Thornton-Trump Articulated boom
US3262517A (en) * 1964-11-18 1966-07-26 Jerry P Malec Bridge crane
US3584703A (en) * 1968-06-07 1971-06-15 Simon Eng Dudley Ltd Hydraulic platforms

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB974654A (en) * 1960-01-22 1964-11-11 Mercury Airfield Equipment Ltd Improvements in or relating to adjustable staging for workmen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3252542A (en) * 1963-12-13 1966-05-24 Walter E Thornton-Trump Articulated boom
US3262517A (en) * 1964-11-18 1966-07-26 Jerry P Malec Bridge crane
US3584703A (en) * 1968-06-07 1971-06-15 Simon Eng Dudley Ltd Hydraulic platforms

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910264A (en) * 1973-04-10 1975-10-07 Mecaniques Du Douaisis Sa Atel Passenger loading ramp
US3882963A (en) * 1973-06-27 1975-05-13 Simon Eng Dudley Ltd Access equipment
US4157742A (en) * 1977-07-18 1979-06-12 Marine Aluminum Aanensen & Co. A/S Accommodation ladder arrangements
US4911263A (en) * 1989-08-01 1990-03-27 Aryeh Kuperman Ambulatory ladder
US8813911B2 (en) * 2007-03-19 2014-08-26 Patriot3, Inc. Tactical vehicle with line deployment tower
US20100276227A1 (en) * 2007-03-19 2010-11-04 Patriot3, Inc. Tactical vehicle with line deployment tower
US20080236065A1 (en) * 2007-03-26 2008-10-02 Conservano Guy A Modular concrete stair truss system
US7976746B2 (en) 2007-03-26 2011-07-12 Conservano Guy A Method installing a modular concrete stair system
US20100140016A1 (en) * 2007-07-24 2010-06-10 Esko Raappana Vehicle and a lifting arm assembly
US20130047352A1 (en) * 2010-03-16 2013-02-28 Graham Corfield Access unit
US8839475B2 (en) * 2010-03-16 2014-09-23 Graham Corfield Access unit
CN103950874A (zh) * 2014-05-20 2014-07-30 毕和军 折叠式高空消防救援装置
US11267403B2 (en) 2015-02-24 2022-03-08 Bnj Leasing Inc Mobile refueling vessel
US10625853B2 (en) 2016-07-01 2020-04-21 Textron Innovations Inc. Automated configuration of mission specific aircraft
US10633087B2 (en) 2016-07-01 2020-04-28 Textron Innovations Inc. Aircraft having hover stability in inclined flight attitudes
CN106075777A (zh) * 2016-07-29 2016-11-09 张帅 无人驾驶救援车
US20240294368A1 (en) * 2022-10-04 2024-09-05 Altec Industries, Inc. Electrical insulation liner for aerial lift platform door

Also Published As

Publication number Publication date
FI52211C (fi) 1977-07-11
JPS5542040B2 (de) 1980-10-28
CA955214A (en) 1974-09-24
DE2239868A1 (de) 1973-02-22
ATA679672A (de) 1975-06-15
JPS4827501A (de) 1973-04-11
AT328661B (de) 1976-04-12
FI52211B (de) 1977-03-31
GB1337154A (en) 1973-11-14
DE2239868C2 (de) 1985-02-07

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