US3837502A - Light weight boom construction - Google Patents

Light weight boom construction Download PDF

Info

Publication number
US3837502A
US3837502A US00340018A US34001873A US3837502A US 3837502 A US3837502 A US 3837502A US 00340018 A US00340018 A US 00340018A US 34001873 A US34001873 A US 34001873A US 3837502 A US3837502 A US 3837502A
Authority
US
United States
Prior art keywords
boom
boom section
extension cylinder
cylinder
section
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
US00340018A
Other languages
English (en)
Inventor
J Hornagold
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.)
NORTHWEST ENGINEERING Co A CORP OF
Original Assignee
Bucyrus Erie Co
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 Bucyrus Erie Co filed Critical Bucyrus Erie Co
Priority to US00340018A priority Critical patent/US3837502A/en
Priority to GB445174A priority patent/GB1417688A/en
Priority to AU65455/74A priority patent/AU473817B2/en
Priority to JP2322674A priority patent/JPS5537478B2/ja
Application granted granted Critical
Publication of US3837502A publication Critical patent/US3837502A/en
Assigned to NORTHWEST ENGINEERING COMPANY A CORP OF DE reassignment NORTHWEST ENGINEERING COMPANY A CORP OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BUCYRUS-ERIE COMPANY
Anticipated expiration legal-status Critical
Assigned to IBJ SCHRODER BANK & TRUST COMPANY reassignment IBJ SCHRODER BANK & TRUST COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TEREX CORPORATION
Assigned to TEREX CORPORATION reassignment TEREX CORPORATION RELEASE OF SECURITY INTEREST AND REASSIGNMENT Assignors: IBJ SCHRODER BANK & TRUST COMPANY, AS AGENT
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/707—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic guiding devices for telescopic jibs

Definitions

  • Support members in the form of rollers are positioned withinthe boom immediately above the lower extension cylinder to not only prevent the extension cylinder from buckling under full load conditions, but to support the outer boom section when it is retracted inward. The result is a reduction in the, size and weight of the extension cylinders and a consequent reduction in boom weight.
  • the field of the invention is telescopic booms for truck mounted cranes, and particularly boom constructions which have minimum cross section, size and weight for a given length and load capacity.
  • Hydraulic extension cylinders are commonly used to control boom reach and they contribute significantly to the weight of the boom. To reduce the overall boom weight, therefore, it is desired to minimize the size of the extension cylinders.
  • the cylinder end of such an extension cylinder is pinned to the lower end of an inner boom section and its rod end is pinned to the outer end of a telescopically mounted outer boom section.
  • the extension cylinder bends, or bows significantly.
  • lateral support must be provided by the walls of the boom sections in which it lies.
  • step type telescopic booms it has been the practice to provide such lateral support for the extension cylinder by locating a divider plate within the outer boom section immediately above the cylinder.
  • divider plates prevent the extension cylinder from buckling, they add appreciable weight to the boom.
  • the diameter of the extension cylinder must be increased substantially to prevent buckling.
  • a divider plate is typically provided not only to support the extension cylinder as described above, but also to support the outer boom section when it is retracted, or telescoped inward, into the mid boom section.
  • the divider plate prevents the outer boom section from tipping downward and damaging the extension cylinder which lies beneath.
  • pads or rollers are positioned at appropriate load bearing points on each boom section.
  • the pads are typically formed from a synthetic material such as nylon and they are either fastened directly to the boom section or are loosely retained within a shallow recess formed on the boom section. Due to the high shearing forces developed during telescopic motion of the boom sections, pads fastened with bolts tend to loosen rapidly as the holes in the pads become elongated under stress. On the other hand, when the pads are loosely confined in a shallow recess, they occasionally lift out and fall free of the boom.
  • the present invention relates to a means of reducing the overall weight of a telescopic boom by eliminating divider plates within the boom and providing spaced support means in place of the divider plate which not only engage and support another boom section, but also provide lateral support for an extension cylinder located beneath.
  • the invention includes a series of support means which connect to the walls of the boom section and which are positioned along its length. Each support means is positioned immediately above the extension cylinder contained within the boom section and directly below a retracted outer boom section.
  • the support means thus serves a dual purpose of providing lateral support for the extension cylinder which prevents it from buckling under high axial loads, and provides support for the outer boom section when it is retracted.
  • a general object of the invention is to eliminate the need for a heavy divider wall within a boom section.
  • the support means includes a pair of rollers which connect to the sidewalls of the boom section and are positioned to allow the outer boom section to ride over them when retracted. The outer boom section is thus prevented from tipping downward against the extension cylinder.
  • the rollers also serve to minimize frictional forces which impede telescopic motion and they therefore contribute to a reduction in the size of the extension cylinder.
  • Another general object of the invention is to provide lateral support for the extension cylinder contained within the boom section.
  • the rollers By positioning the rollers between the extension cylinder and the retracted outer boom section, the rollers limit the lateral movement of the extension cylinder when it bends and thus prevents the cylinder from buckling under maximum load conditions.
  • This lateral support allows a substantial reduction in the size of the extension cylinder.
  • a more specific object of the invention is to provide support rollers which serve to carry a retracted outer boom section and which provide lateral support for an extension cylinder located beneath.
  • the rod on the extension cylinder bows upward and bears against the bottom side of the rollers. A contact point is thus made and when a load is applied to the boom rapidly, the cylinder rod impacts with the rollers.
  • the rollers are rotatably connected to and suspended between the sidewalls of the boom section and each includes a sleeve made of a relatively soft material which will not damage the cylinder rod during impact.
  • Still another specific object of the invention is to provide an improved means of slidably mounting an outer boom section to an inner boom section.
  • a lower pad assembly is mounted on the outer end of the inner boom section and slidably bears against the bottom surface of the outer boom section.
  • An upper pad assembly is formed on the lower end of the outer boom section and slidably bears against the inner surface of the top wall of the inner boom section.
  • a set of rollers are contained within the inner boom section and are positioned to bear against the bottom surface of the outer boom section as it is retracted inward to thus further reduce frictional forces generated during retraction and extension.
  • a more specific object of the invention is to provide an improved means of attaching and retaining the pads to the boom section.
  • Each pad assembly includes a base to which a metal frame member is fastened.
  • the frame member is spaced slightly above the surface of the base and it contains an opening into which a pad is placed.
  • a retainer plate which is larger than the opening is bonded to the bottom surface of the pad to prevent the pad from lifting out of the opening during operation.
  • FIG. 1 is an elevation view of a truck crane which includes the present invention
  • FIG. 2 is a schematic representation of a fully loaded extensible boom which includes the present invention
  • FIG. 3 is a cross section of part of the boom shown in FIG. 2 when not fully loaded
  • FIG. 4 is a cross section of another part of the boom shown in FIG. 2 when not fully loaded
  • V FIG. 5 is a view in crosssection of the boom of FIG. 4 taken on the plane 5-5.
  • FIG. 6 is an exploded perspective view of a pad assembly which forms part of the boom in FIGS. 2 and 3.
  • boom 1 supports a tip assembly 7 which is attached to the outer end of the outer boom section 4.
  • the length, or reach, of the boom 1 is determined by a pair of extension cylinders 10 and 11.
  • the cylinder end 12 of the first extension cylinder 10 is pinned to the lower end of the base section 2 and its rod end 13 is pinned to the outer end of the mid section 3.
  • the base section 2 has a generally rectangular cross sectional shape formed by a pair of side walls, a top wall and a bottom wall.
  • the mid section 3 has a similar shape smaller in size and it telescopes within the base section 2 when the first hydraulic extension cylinder 10 is retracted.
  • the outer boom section 4 is similarly slidably mounted for telescopic motion within the mid boom section 3.
  • the cylinder end 14 of the second extension cylinder 11 is pinned at the lower end of the mid boom section 3 and its rod end 15 is pinned at the outer end of the outer boom section Frictional forces between the telescoping boom sections 2, 3 and 4 are reduced by a set of pad assemblies and rollers. Sliding engagement of the base boom section 2 and the mid boom section 3 is secured by a lower pad assembly 16 attached at the outer end of the base boom section 2 on its bottom wall, and an upper pad assembly 17 attached at the inner end of the mid boom section 3 on its top wall.
  • the three-part boom illustrated in FIG. 2 is shown fully extended and loaded.
  • the mid and outer boom sections 3 and 4 are noticeably bowed from the downward load force applied to the tip assembly 7.
  • This bowing, or bending results from the lateral component of the load force, whereas the axial component of the load force acts along the length of the boom.
  • This axial component of the load force is applied to each of the extension cylinders 10 and 11, and as a result, they also bow, or bend upward.
  • support means are provided within each of the boom sections 3 and 4.
  • a pair of rollers 23 and 20 are connected to span between the sidewalls of the mid boom section 3 and are positioned immediately above the rod of the first hydraulic extension cylinder 10.
  • the first roller 23 is located approximately one half the length of the rod from its pinned end 13
  • the second roller 20 is positioned immediately below the inner end of the outer boom section when it is fully extended.
  • a pad 21 is attached to the lower end of the mid boom section 3 and is positioned immediately above the first extension cylinder 10 to provide support at the outer end of its cylinder portion.
  • a roller 22 is connected to span between the sidewalls of the outer boom section 4 and is positioned immediately above the rod of the second extension cylinder 11.
  • the roller 22 is positioned approximately one half the length of the rod from its pinned end 15.
  • a pad 24 connects to the lower end of the outer boom section 4 and is positioned directly above the cylinder portion of the second extension cylinder 11 to provide further lateral support.
  • rollers 23 and 20 provide lateral support for the rod of the first extension cylinder 10 and thus prevent it from bending excessively under axial loading, these rollers serve a second purpose when the load is removed from the boom and the outer boom section 4 is retracted inward.
  • the outer boom section 4 telescopes within the mid boom section 3 and reaches a point at which its center of gravity passes over the lower pad assembly 18.
  • the lower end of the outer boom section 4 tips downward.
  • the rollers 23 and 20 are positioned to catch and support the outer boom section 4 when this occurs, and to thus prevent it from striking the rod of the first hydraulic cylinder 10.
  • the rollers 23 and 20 thus provide both lateral support for the extension cylinder and support for the outer boom section 4 when it is retracted inward.
  • the rollers 20, 22 and 23 are identical in construction and each includes a circular cylindrical steel body portion 25 which is constricted over the central portion of its length to form a spindle 26.
  • a nylon sleeve 27 is formed around the spindle 26 to provide a relatively soft surface against which the rod of the cylinder 10 may impact without damage.
  • Trunions 28 and 29 are formed on the ends of each roller and each is rotatably connected to one of the boom section side walls by respective sleeve bearings '30 and 31.
  • the sleeve bearings 30 and 31 are fastened to respective annular shaped retainer plates 32 and 33 which in turn are welded to the boom section side walls.
  • the roller shown in FIG. 5 engages and supports the outer boom section 4 which is positioned above it.
  • the extension cylinder rod 10 passes beneath the roller, and when the boom 1 is heavily loaded, the cylinder 10 bows upward and its rod bears against the sleeve 27.
  • each pad assembly includes a base portion which is formed by a rectangular base plate 33 fastened to a set of three lateral support members 34, 35 and 36.
  • the support members 34-36 extend across the width of the boom section to which they are attached and are welded to the underside of the base plate 33 to form a rigid base which will withstand the large forces exerted downward on the pad assembly.
  • Three threaded openings 37 are formed in the lateral support member 34 and a frame member 38 is fastened thereto by a set of three bolts 39.
  • the frame member 38 is rectangular in shape and roughly the size of the base plate 33.
  • the frame member 38 has a pair of large rectangular shaped openings 41 and 42 formed completely through it, and when fastened to the base, these openings form a pair of side-by-side recesses.
  • the frame member 38 is spaced slightly above the base plate 33 and a pair of pads 45 and 46 of substantially rectangular shape are disposed in the recesses formed by the openings 41 and 42.
  • the pads 45 and 46 are formed of a bearing material such as nylon and they fit loosely within the respective openings 41 and 42.
  • the pads 45 and 46 are substantially thicker than the frame member 38 and, therefore, they extend above its surface. The forward and rearward edges of the pads 45 and 46 are beveled and the top surface of each is greased.
  • a pair of relatively thin retainer plates 47 and 48 are bonded to their bottom surfaces with an epoxy cement.
  • the retainer plates 47 and 48 are disposed between the bottom surface of the frame member 38 and the top surface of the base plate 33 and each is slightly larger than its associated opening 41 and 42.
  • the pads 45 and 46 are thus loosely held in place within the recesses and the forces generated by the sliding engagement of the pads 45 and 46 are taken by the frame member 38. Forces tending to lift the pads 45 and 46 out of their respective recess are relatively small, and therefore, the retainer plates 47 and 48 are sufficient to prevent the pads from being lifted out of the recesses.
  • a single retainer plate may be used for both of the pads 45 and 46, or a single pad may be used.
  • other fastening means such as screws can be used, or the retainer plate can be formed as an integral part of the pad.
  • the invented boom is shown, somewhat schematically, in FIG. 2 in a fully loaded position in which the lower extension cylinder 10 is bowed upward against the pad 21 and the rollers 23 and 20, and the upper extension cylinder 11 is bowed upward against the pad 24 and the roller 22.
  • FIGS. 3 and 4 when the load is reduced the boom 1 straightens and the axial loading on the extension cylinders 10 and 11 is reduced. As a result, the cylinders 10 and 11 straighten and disengage from the pads 21 and 24 and the rollers 20, 22 and 23.
  • a pad 49 is attached to the underside of the cylinder 10 at the outer end of its cylinder portion, and a pad 50 is attached to the underside of the extension cylinder 11 at the outer end of its cylinder portion.
  • the pads 49 and 50 rest against the bottom walls of the respective boom sections 3 and 4. Additionally, however, the pads 49 and 50 prevent the respective cylinders 10 and 11 from buckling under maximum loading.
  • the pad 50 includes a steel plate 55 which is welded to the underside of the cylinder 11 and is braced by a pair of angle irons 56 and 57 welded to either side.
  • a block 58 of nylon bearing material is fastened to the bottom surface of the plate 55 by a pair of screws 59.
  • the width of the plate 55 is only slightly smaller than the inside dimension of the outer boom section 4, and therefore, when the cylinder 11 bows in the sideways direction under heavy axial load ing, the plate 55 contacts the sidewalls of the outer boom section 4 and inhibits further bowing.
  • the outer boom section 4 When the boom is fully loaded as shown in FIG. 2, the outer boom section 4 does not engage the roller 20 mounted to the mid boom section 3, but instead, bears heavily against the upper pad assembly 19 and the lower pad assembly 18. However, when the load is removed and the outer boom section 4 is retracted as shown in FIG. 4, the outer boom section 4 tips downward into engagement with the roller 20.
  • the rollers offer a number of advantages. However, other forms of spaced support members will also suffice. For example, pads may be substituted for one or more of the rollers and particularly for example, the roller 22 in the outer boom section 4 which serves only to provide lateral support for the rod of the extension cylinder 11.
  • a telescopic boom having an inner boom section containing an extension cylinder which is connected thereto and lies along a substantial part of its length, and having an outer boom section slidably connected to the inner boom section to telescope therewithin between a retracted and extended position, the improvement comprising:
  • each support spaced along the length of the inner boom section and positioned between the extension cylinder contained therein and the outer boom section when in its retracted position, each support extending completely across the interior of said inner boom section to connect with opposing side walls thereof,
  • each support not only engages and carries said retracted outer boom section, but also engages and provides lateral support for said extension cylinder when it bends under heavy loads.
  • each roller includes a sleeve made of a relatively soft material which will not damage said extension cylinder when it engages the roller.
  • a plate is fastened to the extension cylinder at a point intermediate its ends and said plate extends sideways in both directions from said cylinder to provide sideways support for said cylinder by engaging one of the sidewalls of said inner boom section when said cylinder bows in sideways direction under axial loading.
  • each pad assembly includes:
  • a base having a top surface, said base being connected to one of said boom sections;
  • a frame member connected to said base and extending over said top surface, said frame member having an opening therethrough which forms a recess;
  • a retainer plate disposed between the base and frame member and connected to said pad, said retainer plate having outer dimensions larger than the opening in said frame member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
US00340018A 1973-03-12 1973-03-12 Light weight boom construction Expired - Lifetime US3837502A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US00340018A US3837502A (en) 1973-03-12 1973-03-12 Light weight boom construction
GB445174A GB1417688A (en) 1973-03-12 1974-01-31 Light weight boom construction
AU65455/74A AU473817B2 (en) 1973-03-12 1974-02-11 Telescopic boom
JP2322674A JPS5537478B2 (enrdf_load_stackoverflow) 1973-03-12 1974-02-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00340018A US3837502A (en) 1973-03-12 1973-03-12 Light weight boom construction

Publications (1)

Publication Number Publication Date
US3837502A true US3837502A (en) 1974-09-24

Family

ID=23331531

Family Applications (1)

Application Number Title Priority Date Filing Date
US00340018A Expired - Lifetime US3837502A (en) 1973-03-12 1973-03-12 Light weight boom construction

Country Status (4)

Country Link
US (1) US3837502A (enrdf_load_stackoverflow)
JP (1) JPS5537478B2 (enrdf_load_stackoverflow)
AU (1) AU473817B2 (enrdf_load_stackoverflow)
GB (1) GB1417688A (enrdf_load_stackoverflow)

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004695A (en) * 1975-04-16 1977-01-25 Fulton Industries, Inc. Channel and plate telescopic crane boom
US4045936A (en) * 1976-04-26 1977-09-06 Bucyrus-Erie Company Telescopic boom with sections of beam and truss construction
US4132040A (en) * 1977-05-12 1979-01-02 Jlg Industries, Inc. Multi-section lifting boom
US4257201A (en) * 1979-04-19 1981-03-24 American Hoist & Derrick Company Self-centering telescoping beams
US4459786A (en) * 1981-10-27 1984-07-17 Ro Corporation Longitudinally bowed transversely polygonal boom for cranes and the like
US4699562A (en) * 1983-10-19 1987-10-13 Crook James D Extendable dipperstick for excavators and backhoes
GB2192174A (en) * 1986-07-03 1988-01-06 Jungheinrich Kg Lifting frame for lifting trucks
US4832210A (en) * 1988-02-16 1989-05-23 Wood Ii Donald M Boat lift
US4927315A (en) * 1989-03-06 1990-05-22 Chevron, Inc. Vehicle lifting and towing apparatus
EP0371813A3 (en) * 1988-11-30 1990-08-22 Babcock Energy Limited Handling devices
US5465854A (en) * 1993-07-30 1995-11-14 Par Systems, Inc. Telescoping tube assembly
US5584645A (en) * 1993-12-08 1996-12-17 Ec Engineering & Consulting Spezialmachinen Gmbh Telescopic boom with a multistage, lockable hydraulic cylinder protected against buckling
US5762467A (en) * 1996-04-26 1998-06-09 Par Systems, Inc. Underground storage tank manipulator
US5772360A (en) * 1997-05-19 1998-06-30 Wood, Ii; Donald M. Topless watercraft lifting apparatus with a differential gearing system
US5813552A (en) * 1993-12-08 1998-09-29 Ec Engineering + Consulting Spezialmaschinen Gmbh Telescopic boom with multistage hydraulic cylinder
US20020045172A1 (en) * 2000-06-30 2002-04-18 Sturm Albert J. Segmented support structure and method and fixture for making the same
AT409485B (de) * 1999-05-18 2002-08-26 Winter Udo Ing Mag Teleskopausleger für ein fahrzeug oder ein hebezeug
US6561368B1 (en) 2000-05-01 2003-05-13 Par Systems, Inc. Telescoping tube assembly with a cabling system
US20050232741A1 (en) * 2004-04-16 2005-10-20 Walter Laenge Telescopic loader, in particular a reach stacker
US7624967B1 (en) 2006-04-19 2009-12-01 Par Systems, Inc. Opposed-rope hoist driven telescoping mast
EP2202193A2 (en) 2008-12-26 2010-06-30 Kobelco Cranes Co., Ltd. Sliding support member for boom, boom for construction machinery comprising the same, and method for assembling boom for construction machine
WO2010135620A3 (en) * 2009-05-22 2011-01-13 Rapiscan Security Products, Inc. Compact mobile cargo scanning system
US20120251284A1 (en) * 2011-03-30 2012-10-04 Genie Industries, Inc. Wearpad arrangement
AT12942U1 (de) * 2011-11-08 2013-02-15 Palfinger Ag Kran, insbesondere ladekran für ein fahrzeug
EP2464591A4 (en) * 2009-11-30 2013-08-07 Cargotec Patenter Ab Sliding element and telescopic device comprising such a sliding element
US8668386B2 (en) 2002-07-23 2014-03-11 Rapiscan Systems, Inc. Compact mobile cargo scanning system
US8687765B2 (en) 2002-07-23 2014-04-01 Rapiscan Systems, Inc. Cargo scanning system with boom structure
US8827559B2 (en) * 2012-08-23 2014-09-09 The Heil Co. Telescopic arm for a refuse vehicle
US8837670B2 (en) 2006-05-05 2014-09-16 Rapiscan Systems, Inc. Cargo inspection system
US20140346132A1 (en) * 2013-05-24 2014-11-27 Tadano Ltd. Telescopic boom
US9218933B2 (en) 2011-06-09 2015-12-22 Rapidscan Systems, Inc. Low-dose radiographic imaging system
US9223050B2 (en) 2005-04-15 2015-12-29 Rapiscan Systems, Inc. X-ray imaging system having improved mobility
US9285498B2 (en) 2003-06-20 2016-03-15 Rapiscan Systems, Inc. Relocatable X-ray imaging system and method for inspecting commercial vehicles and cargo containers
US9332624B2 (en) 2008-05-20 2016-05-03 Rapiscan Systems, Inc. Gantry scanner systems
US9632206B2 (en) 2011-09-07 2017-04-25 Rapiscan Systems, Inc. X-ray inspection system that integrates manifest data with imaging/detection processing
US9791590B2 (en) 2013-01-31 2017-10-17 Rapiscan Systems, Inc. Portable security inspection system
US9880314B2 (en) 2013-07-23 2018-01-30 Rapiscan Systems, Inc. Methods for improving processing speed for object inspection
US10144584B2 (en) 2013-10-01 2018-12-04 The Curotto-Can, Llc Intermediate container for a front loading refuse container
US10228487B2 (en) 2014-06-30 2019-03-12 American Science And Engineering, Inc. Rapidly relocatable modular cargo container scanner
US10302807B2 (en) 2016-02-22 2019-05-28 Rapiscan Systems, Inc. Systems and methods for detecting threats and contraband in cargo
US10345479B2 (en) 2015-09-16 2019-07-09 Rapiscan Systems, Inc. Portable X-ray scanner
US10600609B2 (en) 2017-01-31 2020-03-24 Rapiscan Systems, Inc. High-power X-ray sources and methods of operation
US11193898B1 (en) 2020-06-01 2021-12-07 American Science And Engineering, Inc. Systems and methods for controlling image contrast in an X-ray system
US11212902B2 (en) 2020-02-25 2021-12-28 Rapiscan Systems, Inc. Multiplexed drive systems and methods for a multi-emitter X-ray source
US11796489B2 (en) 2021-02-23 2023-10-24 Rapiscan Systems, Inc. Systems and methods for eliminating cross-talk signals in one or more scanning systems having multiple X-ray sources
US12387900B2 (en) 2022-02-03 2025-08-12 Rapiscan Holdings, Inc. Systems and methods for real-time energy and dose monitoring of an X-ray linear accelerator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006347722A (ja) * 2005-06-17 2006-12-28 Tadano Ltd 移動式クレーンの伸縮ブーム
RU2340719C2 (ru) * 2007-01-09 2008-12-10 Георгий Леонидович Сафонов Путеукладчик
JP7200778B2 (ja) * 2019-03-19 2023-01-10 株式会社タダノ スライド部材の位置決め構造

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212604A (en) * 1962-04-09 1965-10-19 Eaton Metal Products Company Extensible derrick
US3690742A (en) * 1971-11-19 1972-09-12 Grove Mfg Co Crane boom
US3715039A (en) * 1969-12-16 1973-02-06 Orenstein & Koppel Ag Telescopic boom
US3719403A (en) * 1970-11-17 1973-03-06 Kidde & Co Walter Crane boom having wear pads
US3719404A (en) * 1970-11-17 1973-03-06 Kidde & Co Walter Crane boom having universally swiveled wear pads
US3722154A (en) * 1970-01-31 1973-03-27 T Sakamoto Extensible boom with buckling-prevention

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4517012Y1 (enrdf_load_stackoverflow) * 1967-03-22 1970-07-13

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212604A (en) * 1962-04-09 1965-10-19 Eaton Metal Products Company Extensible derrick
US3715039A (en) * 1969-12-16 1973-02-06 Orenstein & Koppel Ag Telescopic boom
US3722154A (en) * 1970-01-31 1973-03-27 T Sakamoto Extensible boom with buckling-prevention
US3719403A (en) * 1970-11-17 1973-03-06 Kidde & Co Walter Crane boom having wear pads
US3719404A (en) * 1970-11-17 1973-03-06 Kidde & Co Walter Crane boom having universally swiveled wear pads
US3690742A (en) * 1971-11-19 1972-09-12 Grove Mfg Co Crane boom

Cited By (74)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004695A (en) * 1975-04-16 1977-01-25 Fulton Industries, Inc. Channel and plate telescopic crane boom
US4045936A (en) * 1976-04-26 1977-09-06 Bucyrus-Erie Company Telescopic boom with sections of beam and truss construction
US4132040A (en) * 1977-05-12 1979-01-02 Jlg Industries, Inc. Multi-section lifting boom
US4257201A (en) * 1979-04-19 1981-03-24 American Hoist & Derrick Company Self-centering telescoping beams
US4459786A (en) * 1981-10-27 1984-07-17 Ro Corporation Longitudinally bowed transversely polygonal boom for cranes and the like
US4699562A (en) * 1983-10-19 1987-10-13 Crook James D Extendable dipperstick for excavators and backhoes
GB2192174A (en) * 1986-07-03 1988-01-06 Jungheinrich Kg Lifting frame for lifting trucks
GB2192174B (en) * 1986-07-03 1990-01-17 Jungheinrich Kg Lifting frame for lifting trucks
US4832210A (en) * 1988-02-16 1989-05-23 Wood Ii Donald M Boat lift
EP0371813A3 (en) * 1988-11-30 1990-08-22 Babcock Energy Limited Handling devices
US4927315A (en) * 1989-03-06 1990-05-22 Chevron, Inc. Vehicle lifting and towing apparatus
US5465854A (en) * 1993-07-30 1995-11-14 Par Systems, Inc. Telescoping tube assembly
US5584645A (en) * 1993-12-08 1996-12-17 Ec Engineering & Consulting Spezialmachinen Gmbh Telescopic boom with a multistage, lockable hydraulic cylinder protected against buckling
US5813552A (en) * 1993-12-08 1998-09-29 Ec Engineering + Consulting Spezialmaschinen Gmbh Telescopic boom with multistage hydraulic cylinder
US5762467A (en) * 1996-04-26 1998-06-09 Par Systems, Inc. Underground storage tank manipulator
US5772360A (en) * 1997-05-19 1998-06-30 Wood, Ii; Donald M. Topless watercraft lifting apparatus with a differential gearing system
AT409485B (de) * 1999-05-18 2002-08-26 Winter Udo Ing Mag Teleskopausleger für ein fahrzeug oder ein hebezeug
US6881021B1 (en) 1999-05-18 2005-04-19 Udo Winter Telescopic jib for a motor vehicle or a crane
US6561368B1 (en) 2000-05-01 2003-05-13 Par Systems, Inc. Telescoping tube assembly with a cabling system
US20020045172A1 (en) * 2000-06-30 2002-04-18 Sturm Albert J. Segmented support structure and method and fixture for making the same
US8668386B2 (en) 2002-07-23 2014-03-11 Rapiscan Systems, Inc. Compact mobile cargo scanning system
US9052403B2 (en) 2002-07-23 2015-06-09 Rapiscan Systems, Inc. Compact mobile cargo scanning system
US9223049B2 (en) 2002-07-23 2015-12-29 Rapiscan Systems, Inc. Cargo scanning system with boom structure
US10007019B2 (en) 2002-07-23 2018-06-26 Rapiscan Systems, Inc. Compact mobile cargo scanning system
US8687765B2 (en) 2002-07-23 2014-04-01 Rapiscan Systems, Inc. Cargo scanning system with boom structure
US10670769B2 (en) 2002-07-23 2020-06-02 Rapiscan Systems, Inc. Compact mobile cargo scanning system
US9285498B2 (en) 2003-06-20 2016-03-15 Rapiscan Systems, Inc. Relocatable X-ray imaging system and method for inspecting commercial vehicles and cargo containers
US20050232741A1 (en) * 2004-04-16 2005-10-20 Walter Laenge Telescopic loader, in particular a reach stacker
US9223050B2 (en) 2005-04-15 2015-12-29 Rapiscan Systems, Inc. X-ray imaging system having improved mobility
US7624967B1 (en) 2006-04-19 2009-12-01 Par Systems, Inc. Opposed-rope hoist driven telescoping mast
US8837670B2 (en) 2006-05-05 2014-09-16 Rapiscan Systems, Inc. Cargo inspection system
US9279901B2 (en) 2006-05-05 2016-03-08 Rapiscan Systems, Inc. Cargo inspection system
US10098214B2 (en) 2008-05-20 2018-10-09 Rapiscan Systems, Inc. Detector support structures for gantry scanner systems
US9332624B2 (en) 2008-05-20 2016-05-03 Rapiscan Systems, Inc. Gantry scanner systems
EP2202193A3 (en) * 2008-12-26 2011-10-05 Kobelco Cranes Co., Ltd. Sliding support member for boom, boom for construction machinery comprising the same, and method for assembling boom for construction machine
EP2202193A2 (en) 2008-12-26 2010-06-30 Kobelco Cranes Co., Ltd. Sliding support member for boom, boom for construction machinery comprising the same, and method for assembling boom for construction machine
WO2010135620A3 (en) * 2009-05-22 2011-01-13 Rapiscan Security Products, Inc. Compact mobile cargo scanning system
GB2482451B (en) * 2009-05-22 2013-10-16 Rapiscan Systems Inc Compact mobile cargo scanning system
GB2482451A (en) * 2009-05-22 2012-02-01 Rapiscan Systems Inc Compact mobile cargo scanning system
EP2464591A4 (en) * 2009-11-30 2013-08-07 Cargotec Patenter Ab Sliding element and telescopic device comprising such a sliding element
US8801354B2 (en) * 2011-03-30 2014-08-12 Terex South Dakota, Inc. Wearpad arrangement
US20120251284A1 (en) * 2011-03-30 2012-10-04 Genie Industries, Inc. Wearpad arrangement
US9218933B2 (en) 2011-06-09 2015-12-22 Rapidscan Systems, Inc. Low-dose radiographic imaging system
US11099294B2 (en) 2011-09-07 2021-08-24 Rapiscan Systems, Inc. Distributed analysis x-ray inspection methods and systems
US10422919B2 (en) 2011-09-07 2019-09-24 Rapiscan Systems, Inc. X-ray inspection system that integrates manifest data with imaging/detection processing
US9632206B2 (en) 2011-09-07 2017-04-25 Rapiscan Systems, Inc. X-ray inspection system that integrates manifest data with imaging/detection processing
US12174334B2 (en) 2011-09-07 2024-12-24 Rapiscan Systems, Inc. Distributed analysis X-ray inspection methods and systems
US10830920B2 (en) 2011-09-07 2020-11-10 Rapiscan Systems, Inc. Distributed analysis X-ray inspection methods and systems
US10509142B2 (en) 2011-09-07 2019-12-17 Rapiscan Systems, Inc. Distributed analysis x-ray inspection methods and systems
US9701521B2 (en) 2011-11-08 2017-07-11 Palfinger Ag Crane, in particular loading crane for a vehicle
AT12942U1 (de) * 2011-11-08 2013-02-15 Palfinger Ag Kran, insbesondere ladekran für ein fahrzeug
US8827559B2 (en) * 2012-08-23 2014-09-09 The Heil Co. Telescopic arm for a refuse vehicle
US10274006B2 (en) 2012-08-23 2019-04-30 The Heil Company Telescopic arm for a refuse vehicle
US11280368B2 (en) 2012-08-23 2022-03-22 The Heil Company Telescopic arm for a refuse vehicle
US11933352B2 (en) 2012-08-23 2024-03-19 The Heil Company Telescopic arm for a refuse vehicle
US9556898B2 (en) 2012-08-23 2017-01-31 The Heil Co. Telescopic arm for a refuse vehicle
US10865827B2 (en) 2012-08-23 2020-12-15 The Heil Co. Telescopic arm for a refuse vehicle
US11550077B2 (en) 2013-01-31 2023-01-10 Rapiscan Systems, Inc. Portable vehicle inspection portal with accompanying workstation
US10317566B2 (en) 2013-01-31 2019-06-11 Rapiscan Systems, Inc. Portable security inspection system
US9791590B2 (en) 2013-01-31 2017-10-17 Rapiscan Systems, Inc. Portable security inspection system
US9327948B2 (en) * 2013-05-24 2016-05-03 Tadano Ltd. Telescopic boom
US20140346132A1 (en) * 2013-05-24 2014-11-27 Tadano Ltd. Telescopic boom
US9880314B2 (en) 2013-07-23 2018-01-30 Rapiscan Systems, Inc. Methods for improving processing speed for object inspection
US10144584B2 (en) 2013-10-01 2018-12-04 The Curotto-Can, Llc Intermediate container for a front loading refuse container
US10228487B2 (en) 2014-06-30 2019-03-12 American Science And Engineering, Inc. Rapidly relocatable modular cargo container scanner
US10345479B2 (en) 2015-09-16 2019-07-09 Rapiscan Systems, Inc. Portable X-ray scanner
US10768338B2 (en) 2016-02-22 2020-09-08 Rapiscan Systems, Inc. Systems and methods for detecting threats and contraband in cargo
US10302807B2 (en) 2016-02-22 2019-05-28 Rapiscan Systems, Inc. Systems and methods for detecting threats and contraband in cargo
US11287391B2 (en) 2016-02-22 2022-03-29 Rapiscan Systems, Inc. Systems and methods for detecting threats and contraband in cargo
US10600609B2 (en) 2017-01-31 2020-03-24 Rapiscan Systems, Inc. High-power X-ray sources and methods of operation
US11212902B2 (en) 2020-02-25 2021-12-28 Rapiscan Systems, Inc. Multiplexed drive systems and methods for a multi-emitter X-ray source
US11193898B1 (en) 2020-06-01 2021-12-07 American Science And Engineering, Inc. Systems and methods for controlling image contrast in an X-ray system
US11796489B2 (en) 2021-02-23 2023-10-24 Rapiscan Systems, Inc. Systems and methods for eliminating cross-talk signals in one or more scanning systems having multiple X-ray sources
US12387900B2 (en) 2022-02-03 2025-08-12 Rapiscan Holdings, Inc. Systems and methods for real-time energy and dose monitoring of an X-ray linear accelerator

Also Published As

Publication number Publication date
JPS49135354A (enrdf_load_stackoverflow) 1974-12-26
GB1417688A (en) 1975-12-17
AU473817B2 (en) 1976-07-01
JPS5537478B2 (enrdf_load_stackoverflow) 1980-09-27
AU6545574A (en) 1975-08-14

Similar Documents

Publication Publication Date Title
US3837502A (en) Light weight boom construction
US4112649A (en) Boom section for telescopic crane boom
US3620579A (en) Extensible boom assembly
US4045936A (en) Telescopic boom with sections of beam and truss construction
US3462023A (en) Reinforcement member for telescoping boom assembly
US4257201A (en) Self-centering telescoping beams
US3243052A (en) Telescopic crane boom with longitudinally extending cylinder connector
US3719404A (en) Crane boom having universally swiveled wear pads
US4478014A (en) Telescopic boom with angled corner construction
CN107531465B (zh) 履带起重机的车身配重支撑装置
US3736710A (en) Four-section fully hydraulically operated crane boom having three individually supported single piston rams contained within fly section
KR900007655A (ko) 가동균형추를 가진 인양능력향상비임 부착장치와 이를 가진 크레인
US3502364A (en) Hoist sling with tubular frame
US3090494A (en) Lift truck attachments
US4424985A (en) Outrigger support arrangement
US3445004A (en) Telescopic cantilevered boom
US3478894A (en) Extensible and retractable boom construction for cranes
US3664516A (en) Folding crane boom
US3315821A (en) Four-section fully hydraulically operated boom
US3070244A (en) Loader
US3851732A (en) Mast and carriage for a lift truck
US3198345A (en) Crane
US3506092A (en) Lift truck
RU198986U1 (ru) Универсальная автономная грузоподъемная поворотная гидравлическая стрела
GB1094732A (en) Load handling mechanism

Legal Events

Date Code Title Description
AS Assignment

Owner name: NORTHWEST ENGINEERING COMPANY 201 WEST WALNUT STRE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BUCYRUS-ERIE COMPANY;REEL/FRAME:004433/0395

Effective date: 19850314

AS Assignment

Owner name: IBJ SCHRODER BANK & TRUST COMPANY, NEW YORK

Free format text: SECURITY INTEREST;ASSIGNOR:TEREX CORPORATION;REEL/FRAME:006080/0201

Effective date: 19920327

AS Assignment

Owner name: TEREX CORPORATION, CONNECTICUT

Free format text: RELEASE OF SECURITY INTEREST AND REASSIGNMENT;ASSIGNOR:IBJ SCHRODER BANK & TRUST COMPANY, AS AGENT;REEL/FRAME:007312/0374

Effective date: 19920731