US3776367A - Mobile aerial platform - Google Patents

Mobile aerial platform Download PDF

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Publication number
US3776367A
US3776367A US00261775A US3776367DA US3776367A US 3776367 A US3776367 A US 3776367A US 00261775 A US00261775 A US 00261775A US 3776367D A US3776367D A US 3776367DA US 3776367 A US3776367 A US 3776367A
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US
United States
Prior art keywords
boom
section
platform
arm
hoses
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
US00261775A
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English (en)
Inventor
J Grove
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.)
Fulton Industries Inc
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Fulton Industries Inc
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 Fulton Industries Inc filed Critical Fulton Industries Inc
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Publication of US3776367A publication Critical patent/US3776367A/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
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
    • 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

  • the hydraulic and electrical controls for the entire machine must be located on the operator or worker platform remote from the wheeled base of the machine, and hydraulic hoses and electrical cables of considerable length must be provided external to the boom and these flexible elements must extend from the platform to the top of the boom base section. Without some guidance or restraining means, the flexible hoses and cables tend to sag and flop around in a haphazard way during movements of the boom, and in addition to being unsightly, this can cause damage to a hose or cable due to entanglement or frictional contact with a moving section of the boom.
  • the object of the present invention to cope with this problem through the provision of an economical and practical guidance and restraining means for the necessary hoses and cables which lie outside of the boom structure.
  • the particular means employed is in the form of a flexible track element which protects both hoses and electrical cables from damage due to scuff or abrasion, twisting or stretching, while at the same time guiding these flexible elements during all movements of the telescopic boom in a non-sagging loop along the top of the boom whose length may vary as the telescopic boom is extended and retracted.
  • the flexible guidance track element being expensive and costing approximately dollars per foot, is employed in the invention in conjunction with a rigid unitary arm which is attached to the nose of the boom fly section and extends rearwardly therefrom exteriorly of the fly section along its upper side and in parallel relation thereto.
  • the arm extends for substantially the entire length of the fly section and is capable of externally overlapping the boom base section in closely spaced relation when the boom is fully retracted.
  • One end of the flexible track element is attached to the rear extremity of the rigid arm and its opposite end is attached to the boom base section near the upper end of the latter.
  • the arrangement is highly compact and efficient and reduces by about one-half the length of the expensive flexible track element required for the proper guidance and protection of flexible cables and hoses.
  • the rigid arm serves the additional purposes of providing a pivotal mounting point for the worker platform and a support for the hydraulic cylinder which maintains the platform level at all times.
  • FIG. 1 is a side elevation of a mobile aerial platform embodying the invention.
  • FIG. 2 is another side elevation of the machine with the telescopic boom retracted and lowered to a level position close to the base of the machine.
  • FIG. 3 is an enlarged side elevation, partly in section, showing the cable and hose guidance and protecting means in relation to the fully retracted multi-section boom.
  • FIG. 4 is a fragmentary plan view of the elements shown in FIG. 3, with parts in section and parts broken away.
  • FIG. 5 is a transverse vertical section taken on line 5-5 of FIG. 3.
  • the mobile aerial platfonn shown in its entirety in FIGS. 1 and 2 comprises a conventional steerable wheeled base 10 having a turntable means 11 centrally thereon for the support of a counterweighted body portion 12 which contains the engine, pumps and other conventional power components which need not be described in detail for a proper understanding of the present invention.
  • a counterweighted body portion 12 which contains the engine, pumps and other conventional power components which need not be described in detail for a proper understanding of the present invention.
  • the machine is selfpropelled, steerable and the body portion 12 is revolvable for a full 360 in either direction on the turntable 11. All controls for the machine are located remote from the wheeled base on a worker or operators platform at the top of the boom structure, yet to be described.
  • the body portion 12 carries sturdy upstanding bracket extensions 13 rigid therewith upon which the rear end of a boom base section 14 is pivotally mounted for vertical swinging movement as indicated by the numeral 15.
  • a conventional lift cylinder 16 for the telescopic boom is provided between the top of the body portion 12 and the boom base section 14, as shown.
  • a multisection boom is provided including, in addition to the base section 14, a mid section l7 and an outer or fly section 18. The boom is extensible and retractable between the extreme positions shown in FIGS. 1 and 2 by conventional hydraulic means, not shown in detail, and being unnecessary to describe for a full understanding of the invention.
  • a worker platform 19 is provided at the distal end of the boom and this platform carries all'of the necessary hydraulic and electrical controls for the machine including the controls for propelling and steering the wheeled base 10, for turning the body portion 12 on the turntable and for raising and lowering and extending or retracting the telescopic boom.
  • These controls per se are conventional and well-known and need not be shown or described in detail.
  • the improvement to which this application is directed resides in a guidance, supporting and protecting means for these flexible cables and hoses so as to prevent the same from sagging in a haphazard manner and possibly becoming damaged by tangling, stretching or abrasion as where they are left unsupported.
  • the means in question comprises a section 20 of self-supporting carrier track of the type manufactured and sold by Gleason Reel Division of Maysteel Products Corp. of Mayvillc, Wisconsin. A disclosure of this track structure is contained at column 4, lines 60 through 65 of US. Pat. No.
  • the carrier track 20 consists of a multiplicity of pivotally interconnected links 21 which resist flexing or sagging in one direction due to the coaction of abutting shoulders 22 on the links.
  • the track is freely flexible in another direction so as to form a controlled self-supporting variable length loop for hoses and electrical cables or other flexible elements contained therein.
  • the necessary flexible hydraulic hoses 23 and electrical cables 24 making up an electrical harness extend through the length of the carrier track 20, between the side links 21 thereof, FIG. 4.
  • the hoses 23 and cables 24 are supported by transverse carrier plates 26, such plates having openings which receive the hoses and cables and support them, without interfering with their ability to flex.
  • the carrier track forms itself into a non-sagging straight section 27, FIG. 1, when the telescopic boom is extended. When the boom is retracted, FIGS. 2 and 3, the carrier track is laid down upon the upper side of the boom base section 14. Additionally, the flexible carrier track 20 is stable in the lateral direction and prevents the hoses and cables from moving transversely of the boom.
  • the track maintains the hoses and cables in a neat variable length loop at the top side of the boom regardless of its angle and degree of extension.
  • the carrier track also substantially encloses the hoses and cables and protects them against scuff or abrasion and also against twisting, stretching or entangling.
  • One end of the carrier track 20 has a mounting link 28 which is fixedly secured at 29 to the top side of boom base section 14 near the outer end of this section.
  • the remote end of the track has another mounting link 30 which is similarly fixed at 31 to the lower end of an elongated rigid box-like arm 32 which parallels the boom fly section 18 in spaced relation to the top thereof.
  • the interior of the rigid arm 32 receives the hoses 23 and cables 24 as they emerge from the carrier track 20.
  • the rigid arm is formed by a pair of spaced plates 33 having short rear extensions 34 which are welded to opposite sides of the box section 32 so as to render the plates 33 rigid and integral with the box section of the arm.
  • the plates 33 At their forward ends, the plates 33 have depending transverse extensions 35 integral therewith which straddle the opposite sides of boom fly section 18 and are rigidly attached thereto by welding or the like.
  • a sturdy pivot element 36 pivotally connects the platform 19 to the rigid arm composed of the elements 32, 33 and 35.
  • the arm plates 33 receive between them a cylinder unit 37 whose function is to automatically maintain the platform 19 in a level attitude regardless of the angular position of the boom between the extreme positions shown in FIGS. 1 and 2.
  • the rear end of the cylinder is pivoted at 38 to the plates 33 of the rigid arm while the rod 39 of the cylinder unit is pivotally attached at 40 to a pair of mounting plates 41 projecting from the rear side of the platform 19.
  • the operation of the cylinder 37 in automatically leveling the platform 19 is conventional but the mounting of the cylinder 37 on the rigid arm adjacent the top of the boom fly section is novel.
  • a cover member 42 may be provided on the rigid arm to substantially enclose the cylinder 37, as shown, and this cover member may be constructed so as to be easily removable, if desired.
  • a rigid arm external to the boom fly section 18 composed of the elements 32, 33 and 35 is generally L-shaped with the transverse portion 35 thereof attached to the nose of the fly section and carrying the worker platform 19.
  • the elongated body portion of the arm composed of the elements 32 and 33 is spaced from the top of the fly section and is substantially coextensive lengthwise therewith.
  • the length of track section required is reduced by about fifty per cent from what would be needed without the use of the arm. Since the carrier track is priced at approximately 20 dollars linear foot, a considerable economy is achieved by the use of the combination structure, and with no loss of function as regards the purpose of the carrier track in guiding, supporting and protecting the hoses and cables. Additionally, the rigid arm is enabled to perform several other useful purposes as described in supporting the cylinder 37 and the worker platform.
  • the carrier track 20 will automatically adjust itself without sagging or swaying laterally and will continue to guide, support and protect the hoses and cables extending through it. It is believed that the advantages of the invention will now be apparent to those skilled in the art without the necessity for further description herein.
  • a machine having an extensible and retractable telescopic boom with hydraulic and electrical controls at the distal end of the boom and flexible hydraulic hoses and electrical cables external to the boom extending from the distal end toward the base of the boom, the improvement comprising a rigid arm secured to the distal end of the boom and extending reversely from the distal end for a substantial distance near one side of the boom, and a flexible non-sagging carrier track for the hoses and cables and receiving the hoses and cables therethrough in supported relation, the carrier track having opposite ends secured to the rigid arm and to the base portion of the boom.
  • said rigid arm comprising a generally L-shaped arm having a short transverse portion adjacent the distal end of the boom and fixedly secured to said distal end, a worker platform pivotally supported on said transverse portion of the arm, and a leveling cylinder unit for the worker platform having a pivotal support point on said arm.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Jib Cranes (AREA)
US00261775A 1972-06-12 1972-06-12 Mobile aerial platform Expired - Lifetime US3776367A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26177572A 1972-06-12 1972-06-12

Publications (1)

Publication Number Publication Date
US3776367A true US3776367A (en) 1973-12-04

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US00261775A Expired - Lifetime US3776367A (en) 1972-06-12 1972-06-12 Mobile aerial platform

Country Status (10)

Country Link
US (1) US3776367A (ja)
JP (1) JPS5544040B2 (ja)
BE (1) BE800722A (ja)
CA (1) CA983867A (ja)
DE (1) DE2321503C3 (ja)
FR (1) FR2187673B3 (ja)
GB (1) GB1420677A (ja)
IT (1) IT985668B (ja)
NL (1) NL7308073A (ja)
SE (1) SE390528B (ja)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD262279S (en) 1980-01-31 1981-12-15 Mark Industries Mobile self-powered hydraulic lift
FR2486054A1 (fr) * 1980-07-02 1982-01-08 Jlg Ind Inc Appareil a plate-forme de levage muni de supports de conduits souples de commande
WO1983001436A1 (en) * 1981-10-19 1983-04-28 SÖDER, Sven-Harry Device for supporting workpieces in different positions
US4476955A (en) * 1981-06-22 1984-10-16 Carter Jerry A Articulated powered lift machines
EP0201195A2 (en) * 1985-04-03 1986-11-12 Kabushiki Kaisha Hikoma Seisakusho Lifting apparatus
EP0239302A2 (en) * 1986-03-27 1987-09-30 Kidde Industries Inc. Carrier track system for extensible and retractable boom machines
US4775029A (en) * 1987-10-08 1988-10-04 Jlg Industries, Inc. Collapsible tower boom lift
EP0704406A1 (en) * 1994-09-27 1996-04-03 Kidde Industries Inc. Carrier track system for independent and/or synchronized operation of a multi-section telescopic boom structure
NL1023747C2 (nl) * 2003-06-25 2005-01-03 Berg Produkt De Lier B V Werkwagen geschikt voor gebruik in warenhuizen.
US20140175353A1 (en) * 2012-12-21 2014-06-26 Donald Aloysius Hoffend, Jr. Compact Hoist System
US20140251726A1 (en) * 2013-03-07 2014-09-11 Oshkosh Corporation Internally supported power track
CN104743456A (zh) * 2015-03-05 2015-07-01 长治清华机械厂 随车起重机
USD773146S1 (en) * 2014-02-28 2016-11-29 Haulotte Group Boom lift
US9962621B2 (en) 2012-12-21 2018-05-08 Electronic Theatre Controls, Inc. Compact hoist system
US10091922B2 (en) 2016-09-07 2018-10-09 Cnh Industrial America Llc Agricultural implement sliding hitch
US10799809B2 (en) 2007-11-08 2020-10-13 Electronic Theatre Controls, Inc. Lift assembly systems and methods

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE402753B (sv) * 1977-03-21 1978-07-17 Jonsereds Fabrikers Ab Anordning av slangforing och hydroulkoppling vid hydrauliskt manovrerad kran
US4118907A (en) * 1977-10-27 1978-10-10 General Cable Corporation Lifting equipment having telescopic boom with automatic extension limiting
JPS586856Y2 (ja) * 1978-09-22 1983-02-05 石川島播磨重工業株式会社 伸縮ブ−ム内の配管支持装置
AU8247382A (en) * 1981-04-14 1983-04-21 Coles Cranes Ltd. Telescopic booms for cranes
FR2514338A1 (fr) * 1981-10-12 1983-04-15 Egie Engin elevateur de personnel du type telescopique
JPS5943932A (ja) * 1982-09-02 1984-03-12 Mitsubishi Electric Corp 機関の燃料圧力調整装置
FR2553396B1 (fr) * 1983-10-17 1986-02-07 Haulotte Sa Ateliers Const A Fleche telescopique pour grue, nacelle ou plate-forme
US4955350A (en) * 1989-06-21 1990-09-11 General Motors Corporation Fuel injection
DE4141812A1 (de) * 1991-12-18 1993-06-24 Spezialfahrzeugaufbau Und Kabe Teleskopierbare turmwagenarbeitsbuehne
SE541217C2 (en) 2017-09-08 2019-05-07 Epiroc Rock Drills Ab Mining or construction vehicle
SE542480C2 (en) 2017-09-08 2020-05-19 Epiroc Rock Drills Ab Mining or construction vehicle enclosing a conduit arrangement
CN113120821B (zh) * 2021-03-04 2022-09-13 山东厚德建筑安装工程有限公司 一种电力工程用施工综合设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2682432A (en) * 1950-05-31 1954-06-29 American Steel Dredge Company Variable length boom and selfleveling platform therefor
US3212604A (en) * 1962-04-09 1965-10-19 Eaton Metal Products Company Extensible derrick
US3480109A (en) * 1968-01-15 1969-11-25 Telsta Corp Lifting equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2682432A (en) * 1950-05-31 1954-06-29 American Steel Dredge Company Variable length boom and selfleveling platform therefor
US3212604A (en) * 1962-04-09 1965-10-19 Eaton Metal Products Company Extensible derrick
US3480109A (en) * 1968-01-15 1969-11-25 Telsta Corp Lifting equipment

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD262279S (en) 1980-01-31 1981-12-15 Mark Industries Mobile self-powered hydraulic lift
FR2486054A1 (fr) * 1980-07-02 1982-01-08 Jlg Ind Inc Appareil a plate-forme de levage muni de supports de conduits souples de commande
US4360077A (en) * 1980-07-02 1982-11-23 Jlg Industries Aerial lift platform apparatus with control conduit support system
US4476955A (en) * 1981-06-22 1984-10-16 Carter Jerry A Articulated powered lift machines
WO1983001436A1 (en) * 1981-10-19 1983-04-28 SÖDER, Sven-Harry Device for supporting workpieces in different positions
US4694930A (en) * 1985-04-03 1987-09-22 Kabushiki Kaisha Hikoma Seisakusho Lifting apparatus
EP0201195A2 (en) * 1985-04-03 1986-11-12 Kabushiki Kaisha Hikoma Seisakusho Lifting apparatus
EP0201195A3 (en) * 1985-04-03 1988-01-07 Kabushiki Kaisha Hikoma Seisakusho Lifting apparatus
EP0239302A2 (en) * 1986-03-27 1987-09-30 Kidde Industries Inc. Carrier track system for extensible and retractable boom machines
US4789120A (en) * 1986-03-27 1988-12-06 Kidde, Inc. Carrier track system for extensible and retractable boom machines
EP0239302A3 (en) * 1986-03-27 1989-10-18 Kidde, Inc. Carrier track system for extensible and retractable boom machines
US4775029A (en) * 1987-10-08 1988-10-04 Jlg Industries, Inc. Collapsible tower boom lift
EP0704406A1 (en) * 1994-09-27 1996-04-03 Kidde Industries Inc. Carrier track system for independent and/or synchronized operation of a multi-section telescopic boom structure
US5718345A (en) * 1994-09-27 1998-02-17 Kidde Industries, Inc. Carrier track system for independent and/or synchronized operation of a multi-section telescopic boom structure
NL1023747C2 (nl) * 2003-06-25 2005-01-03 Berg Produkt De Lier B V Werkwagen geschikt voor gebruik in warenhuizen.
US10799809B2 (en) 2007-11-08 2020-10-13 Electronic Theatre Controls, Inc. Lift assembly systems and methods
US11319198B2 (en) 2012-12-21 2022-05-03 Electronic Theatre Controls, Inc. Compact hoist accessories and combination systems
US20140175353A1 (en) * 2012-12-21 2014-06-26 Donald Aloysius Hoffend, Jr. Compact Hoist System
US9962621B2 (en) 2012-12-21 2018-05-08 Electronic Theatre Controls, Inc. Compact hoist system
US11111117B2 (en) 2012-12-21 2021-09-07 Electronic Theatre Controls, Inc. Compact hoist system
US10183850B2 (en) * 2012-12-21 2019-01-22 Electronic Theatre Controls, Inc. Compact hoist system
US10989332B2 (en) * 2013-03-07 2021-04-27 Oshkosh Corporation Internally supported power track
US20140251726A1 (en) * 2013-03-07 2014-09-11 Oshkosh Corporation Internally supported power track
US9791071B2 (en) * 2013-03-07 2017-10-17 Oshkosh Corporation Internally supported power track
US10174868B2 (en) * 2013-03-07 2019-01-08 Oshkosh Corporation Internally supported power track
USD773146S1 (en) * 2014-02-28 2016-11-29 Haulotte Group Boom lift
CN104743456A (zh) * 2015-03-05 2015-07-01 长治清华机械厂 随车起重机
US10091922B2 (en) 2016-09-07 2018-10-09 Cnh Industrial America Llc Agricultural implement sliding hitch

Also Published As

Publication number Publication date
FR2187673B3 (ja) 1976-05-28
JPS4949352A (ja) 1974-05-13
DE2321503B2 (de) 1980-01-24
AU5495673A (en) 1974-10-31
DE2321503A1 (de) 1974-01-10
BE800722A (fr) 1973-10-01
JPS5544040B2 (ja) 1980-11-10
IT985668B (it) 1974-12-10
SE390528B (sv) 1976-12-27
DE2321503C3 (de) 1980-09-18
NL7308073A (ja) 1973-12-14
SE7308065L (ja) 1973-12-13
FR2187673A1 (ja) 1974-01-18
CA983867A (en) 1976-02-17
GB1420677A (en) 1976-01-07

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