US3861498A - Counterbalancing chassis for aerial platform apparatus - Google Patents

Counterbalancing chassis for aerial platform apparatus Download PDF

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Publication number
US3861498A
US3861498A US379151A US37915173A US3861498A US 3861498 A US3861498 A US 3861498A US 379151 A US379151 A US 379151A US 37915173 A US37915173 A US 37915173A US 3861498 A US3861498 A US 3861498A
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US
United States
Prior art keywords
chassis
members
longitudinally extending
boom
aerial platform
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
US379151A
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English (en)
Inventor
John L 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
Original Assignee
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
Priority to US379151A priority Critical patent/US3861498A/en
Priority to GB2596474A priority patent/GB1462126A/en
Priority to CA202,632A priority patent/CA1005002A/en
Priority to AU70256/74A priority patent/AU484163B2/en
Priority to DE2430359A priority patent/DE2430359A1/de
Priority to BE146055A priority patent/BE817057A/xx
Priority to FR7424210A priority patent/FR2236778B1/fr
Priority to JP8069474A priority patent/JPS5314841B2/ja
Application granted granted Critical
Publication of US3861498A publication Critical patent/US3861498A/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
    • B66F11/046—Working platforms suspended from booms of the telescoping type

Definitions

  • An aerial platform apparatus includes a chassis supported by wheels, the chassis carrying centrally thereof a boom support revolvable on a vertical axis.
  • a boom carried by the boom support carries a load at its outer end.
  • the chassis is rectangular in plan form, having a pair of transversely spaced, longitudinally extending chassis members which are each unitary, rectangular in vertical cross section and of a thickness greater than required to resist strains to thereby provide an integral counterweight and chassis member.
  • the present invention relates to a construction of the chassis of an apparatus having a boom, such as an aerial platform apparatus, or a crane.
  • Cranes have long been used to lift a load at one location, to move it and then deposit it at another location, these cranes including a boom having a load supporting cable depending from the outer end thereof.
  • the cranes having conventionally been constructed so that the boom could be raised and lowered, as well as rotated about a vertical axis. It is also known to provide such cranes on a mobile chassis, so that they may be moved from place to place.
  • aerial platform apparatus which were to some extent similar to cranes, in that they included a mobile chassis, typically mounted on three or four supporting wheels, a boom pivoted on a horizontally extending pivot so that it could be raised and lowered, the boom carrying at its outer end a platform or basket in which a workman was positioned.
  • aerial platforms permit turning movement of the boom about a vertical axis, and the boom itself is extensible. Consequently, the workmans platform could be placed at many different positions, due to the rotation of the boom about a vertical axis, its rotation about a horizontal axis and its extensibility along its length.
  • the chassis had been made of rolled steel sections, such as I-beams, C-channels and T-bars.
  • counterweights were added to the chassis, such as by being bolted to longitudinally extending chassis members made of I-beams.
  • An aerial platform apparatus including a chassis supported by ground engaging wheels, the chasbers, and front and rear transverse members, there being four wheels supported by the transverse members.
  • a ring element is supported with its center at the center line of the chassis, equally distant between the two longitudinally extending members, and on this ring there is journalled a boom support structure which may be rotated through at least on the vertical axis extending through the ring.
  • the boom support structure includes a horizontal pivot which carries the boom, and the boom is preferably extensible, carrying at its outer end a workmans platform or basket.
  • the chassis is characterized by a pair of laterally spaced and longitudinally extending integral chassis members and counterweights.
  • Each of these chassis members is formed of a slab of metal which is of rectangular cross section in the vertical plane, with the long side of the rectangle extending vertically.
  • These longitudinally extending integral chassis members and counterweights may have other chassis members secured to them, as by welding, and may have discontinuities, such as openings. However, they are characterized by being of substantially greater dimensions than would be required for normal stress considerations.
  • an aerial platform apparatus including a chassis which is counterweighted to counteract sidewise tipping.
  • Another object of the present invention is to provide an aerial platform apparatus having an integral chassisstrut which is more economical to manufacture than previously manufactured chassis.
  • Still another object of the present invention is to provide a chassis for an aerial platform apparatus having integral chassis members and counterweights.
  • FIG. 1 is an elevational view of an aerial platform apparatus in accordance with the present invention.
  • FIG. 2 is a plan view of the chassis of the apparatus of FIG. 1, generally taken on the line 2-2 of FIG. 1.
  • FIG. 3 is a side elevation of the chassis shown in FIG. 2.
  • FIG. 4 is a cross sectional view taken on the line 4-4 of FIG. 2.
  • FIG. 1 an aerial platform apparatus generally designated 10, including a pair of front wheels 12 and 12', carried by a chassis 14.
  • Chassis 14 carries a boom support structure 16, which is rotatable thereon about vertically extending axis A.
  • Boom support structure 16 includes a horizontal pivot 18, which pivotally supports a boom 20.
  • boom 20 is an extensible boom including a base section 20a, a midsection 20b and a fly sectison 20c, each being shown broken away.
  • a hydraulic lift cylinder 22 is provided for raising and lowering the boom 20, by moving it about the pivot 18.
  • boom 20 carries a workman's platform 24, and it will be understood that all movements may be controlled from workmans platform 24, including specifically the raising and lowering of boom 20, the rotation of boom and boom support 16 about the axis A and the extension and retraction of boom 20. 5
  • Chassis 14 comprises a front chassis member 32 which extends transversely, chassis member 32 being shown in FIG. 3 to be an I-beam. At the rear, there is a rear transversely extending chassis member 34, which has the cross sectional shape of a channel. Forwardly of the rear chassis member 34 are a pair of rear auxiliary chassis members 36 and 38, also having a channel shaped cross section A pair of transversely spaced longitudinally extending integral chassis members and counterweights 40 and 42 may be seen in FIG. 2, extending between the front chassis member 32 and the rear chassis member 34.
  • the auxiliary chassis members 36 and 38 may be seen extending from and connected to the longitudinally extending chassis members 40 and 42, respectively, being welded thereto. Extending at an angle between the front chassis member 32 and the longitudinal chassis members 40 and 42 are a pair of diagonal braces 44 and 46, and a similar pair of rear diagonal braces 48 and 52 extend between the longitudinal chassis members 40 and 42 and the auxiliary chassis members 36 and 38.
  • a front intermediate transverse member 54 and a rear intermediate transverse member 56 are provided, extending between and joined to the longitudinal chassis members 40 and 42, as by welding.
  • the parallel members 54 and 56 are spaced apart approximately the same distance as the members 40 and 42, and each lies the same distance from the front-to-rear center of the chassis 14.
  • the diameter of cylinder 58 is substantially the same as the distance between members and 42, and members 54 and 56.
  • the cylinder 58 and plates 60 serve to support a horizontal ring 62 having its axis and that of the cylinder 58 coextensive, and designated A.
  • the ring 62 may support a hearing, or the like, so that the boom support structure 16 may rotate thereon, about the axis A. Due to the positioning of the members 54 and 56, the axis A is at the front-to-rear center of chassis 14.
  • FIG. 4 a cross sectional view of the longitudinally extending chassis member 40.
  • This is a vertical cross section, and as may be seen therefrom, the chassis member 40 is rectangular in vertical cross section, having the long side thereof extending in the vertical direction.
  • the members 40 and 42 are metal slabs approximately two and one half inches in width and approximately fourteen inches in depth.
  • these longitudinal chassis members 40 are of far greater strength than is required for normal stress considerations of the apparatus 10.
  • due to the great weight of the members 40 and 42 they also serve as counterweights, to counteract tipping moments, such as those occurring when the boom 20 lies in a plane which extends generally perpendicularly to the longitudinal axis of the chassis 14.
  • the longitudinally extending members 40 and 42 are preferably of uniform size and cross sectional shape throughout their lengths, although as will be understood, the other members may be joined or connected to them, as illustrated in the drawing, and in addition there may be a requirement that there be an occasional discontinuity in one or both of these members, such as the hole 64 in the member 40.
  • chassis members 40 and 42 By making the chassis members 40 and 42 of metal slabs, greater economy is achieved than where rolled steel sections are utilized, and counterweights are bolted or otherwise secured to them.
  • longitudinally extending chassis members function as both stress transmitting members and counterweights, transferring stresses from the boom and boom suppport structure to the ground engaging wheels, through other chassis members.
  • the longitudinally extending chassis members are of substantially greater size than is normally required for conventional stress considerations, the extra size being provided in order to provide an integral counterweight and chassis member.
  • Aerial platform apparatus comprising:
  • said chassis comprising:
  • chassis members i. a pair of longitudinally extending chassis members, each being a unitary, integral slab of metal having a vertical rectangular cross section;
  • cylindrical support means extending upwardly from and supported on both said longitudinally extending members and both said intermediate transverse members, said cylindrical support means having a diameter substantially the same as said distance between said members, d. rotatable boom support means on said cylindrical support means, arid e. a boom carried by said boom support means and having a platform on the outer end thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Movable Scaffolding (AREA)
  • Jib Cranes (AREA)
US379151A 1973-07-13 1973-07-13 Counterbalancing chassis for aerial platform apparatus Expired - Lifetime US3861498A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US379151A US3861498A (en) 1973-07-13 1973-07-13 Counterbalancing chassis for aerial platform apparatus
GB2596474A GB1462126A (en) 1973-07-13 1974-06-12 Mobile boom-mounting apparatus
CA202,632A CA1005002A (en) 1973-07-13 1974-06-17 Counterbalancing chassis for aerial platform apparatus
AU70256/74A AU484163B2 (en) 1973-07-13 1974-06-19 Counterbalancing chassis for aerial platform apparatus
DE2430359A DE2430359A1 (de) 1973-07-13 1974-06-25 Fahrgestellrahmen fuer eine hebebuehne
BE146055A BE817057A (fr) 1973-07-13 1974-06-28 Chassis d'equilibrage pour appareil a plate-forme aerienne
FR7424210A FR2236778B1 (enrdf_load_stackoverflow) 1973-07-13 1974-07-11
JP8069474A JPS5314841B2 (enrdf_load_stackoverflow) 1973-07-13 1974-07-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US379151A US3861498A (en) 1973-07-13 1973-07-13 Counterbalancing chassis for aerial platform apparatus

Publications (1)

Publication Number Publication Date
US3861498A true US3861498A (en) 1975-01-21

Family

ID=23496026

Family Applications (1)

Application Number Title Priority Date Filing Date
US379151A Expired - Lifetime US3861498A (en) 1973-07-13 1973-07-13 Counterbalancing chassis for aerial platform apparatus

Country Status (7)

Country Link
US (1) US3861498A (enrdf_load_stackoverflow)
JP (1) JPS5314841B2 (enrdf_load_stackoverflow)
BE (1) BE817057A (enrdf_load_stackoverflow)
CA (1) CA1005002A (enrdf_load_stackoverflow)
DE (1) DE2430359A1 (enrdf_load_stackoverflow)
FR (1) FR2236778B1 (enrdf_load_stackoverflow)
GB (1) GB1462126A (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4226300A (en) * 1979-02-21 1980-10-07 Mark Industries Self propelled and extensible boom lift
USD261127S (en) 1980-01-31 1981-10-06 Mark Industries Mobile self-powered hydraulic lift
USD262279S (en) 1980-01-31 1981-12-15 Mark Industries Mobile self-powered hydraulic lift
US4397481A (en) * 1980-08-07 1983-08-09 Poclain Supporting chassis for working machine, with central frame and side-members
USRE31400E (en) * 1979-02-21 1983-10-04 Mark Industries Self propelled and extensible boom
US4757875A (en) * 1987-09-25 1988-07-19 Kidde, Inc. Vehicular low profile self propelled aerial work platform
US6098823A (en) * 1998-02-27 2000-08-08 Jlg Industries, Inc. Stabilizing arrangements in and for load-bearing apparatus
US6719075B2 (en) * 2000-08-15 2004-04-13 Komatsu Ltd. Frame structure of crawler-type construction machine vehicle
US20100244422A1 (en) * 2006-09-28 2010-09-30 Kubota Corporation Track Frame for Work Machine
USD1060923S1 (en) * 2022-02-08 2025-02-04 Manitou Italia S.R.L. Platform for telescopic lifter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52108713U (enrdf_load_stackoverflow) * 1976-02-14 1977-08-18
GB2082984B (en) * 1980-09-03 1984-02-08 Coles Cranes Ltd Chassis for platform vehicles
WO1993012951A1 (en) * 1988-04-18 1993-07-08 Kiyoshige Maezawa Seat reversing and supporting structure for vehicles
RU2139805C1 (ru) * 1997-11-13 1999-10-20 Крестниковский Валерий Александрович Ходовая рама самоходного грузоподъемного крана

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1676342A (en) * 1926-02-08 1928-07-10 Mackenzie Donald Gordon Vehicle frame
US2144760A (en) * 1937-01-11 1939-01-24 Harnischfeger Corp Excavator base and frame
US2804984A (en) * 1954-04-06 1957-09-03 Yale & Towne Mfg Co Frame construction for industrial truck
US2842378A (en) * 1953-05-29 1958-07-08 Glenn W Way Sectional crane body
US3191716A (en) * 1962-12-10 1965-06-29 Telsta Corp Mobile lifting equipment
US3622178A (en) * 1969-07-09 1971-11-23 Fruehauf Corp Longitudinally movable landing gear for trailers and the like

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1676342A (en) * 1926-02-08 1928-07-10 Mackenzie Donald Gordon Vehicle frame
US2144760A (en) * 1937-01-11 1939-01-24 Harnischfeger Corp Excavator base and frame
US2842378A (en) * 1953-05-29 1958-07-08 Glenn W Way Sectional crane body
US2804984A (en) * 1954-04-06 1957-09-03 Yale & Towne Mfg Co Frame construction for industrial truck
US3191716A (en) * 1962-12-10 1965-06-29 Telsta Corp Mobile lifting equipment
US3622178A (en) * 1969-07-09 1971-11-23 Fruehauf Corp Longitudinally movable landing gear for trailers and the like

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4226300A (en) * 1979-02-21 1980-10-07 Mark Industries Self propelled and extensible boom lift
USRE31400E (en) * 1979-02-21 1983-10-04 Mark Industries Self propelled and extensible boom
USD261127S (en) 1980-01-31 1981-10-06 Mark Industries Mobile self-powered hydraulic lift
USD262279S (en) 1980-01-31 1981-12-15 Mark Industries Mobile self-powered hydraulic lift
US4397481A (en) * 1980-08-07 1983-08-09 Poclain Supporting chassis for working machine, with central frame and side-members
US4757875A (en) * 1987-09-25 1988-07-19 Kidde, Inc. Vehicular low profile self propelled aerial work platform
US6098823A (en) * 1998-02-27 2000-08-08 Jlg Industries, Inc. Stabilizing arrangements in and for load-bearing apparatus
US6719075B2 (en) * 2000-08-15 2004-04-13 Komatsu Ltd. Frame structure of crawler-type construction machine vehicle
US20100244422A1 (en) * 2006-09-28 2010-09-30 Kubota Corporation Track Frame for Work Machine
US7997619B2 (en) * 2006-09-28 2011-08-16 Kubota Corporation Track frame for work machine
USD1060923S1 (en) * 2022-02-08 2025-02-04 Manitou Italia S.R.L. Platform for telescopic lifter

Also Published As

Publication number Publication date
CA1005002A (en) 1977-02-08
BE817057A (fr) 1974-10-16
JPS5314841B2 (enrdf_load_stackoverflow) 1978-05-20
DE2430359A1 (de) 1975-01-30
JPS5038902A (enrdf_load_stackoverflow) 1975-04-10
FR2236778B1 (enrdf_load_stackoverflow) 1977-10-07
GB1462126A (en) 1977-01-19
FR2236778A1 (enrdf_load_stackoverflow) 1975-02-07
AU7025674A (en) 1976-01-08

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