US3796018A - Structural elements for the erection of masts, such as hoist and crane masts, antenna masts etc. - Google Patents

Structural elements for the erection of masts, such as hoist and crane masts, antenna masts etc. Download PDF

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Publication number
US3796018A
US3796018A US00198390A US3796018DA US3796018A US 3796018 A US3796018 A US 3796018A US 00198390 A US00198390 A US 00198390A US 3796018D A US3796018D A US 3796018DA US 3796018 A US3796018 A US 3796018A
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US
United States
Prior art keywords
longitudinal member
locking means
cantilever
masts
locking
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
US00198390A
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English (en)
Inventor
N Holmstrom
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.)
AMACO MASKIN AB
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AMACO MASKIN AB
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 AMACO MASKIN AB filed Critical AMACO MASKIN AB
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Publication of US3796018A publication Critical patent/US3796018A/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
    • 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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/26—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • B66C23/28—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels
    • B66C23/283—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of assembled elements
    • B66C23/286—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of assembled elements with locking devices
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials of metal
    • E04H12/10—Truss-like structures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7005—Lugged member, rotary engagement
    • Y10T403/7007—Bayonet joint

Definitions

  • a hoist mast composed of planar structural elements each consisting of tube means and cantilever means extending therefrom.
  • the tube means has a male member at one end, a female member at the opposite end, which members together form a bayonet catch, a fastening portion and locking means.
  • This invention relates to a structural element for constructing and erecting masts which are subjected to bending stresses, such as hoist and crane masts, antenna masts and the like, including tube means which at one end has a pin and at the opposite end a conforming hole and intermediate its ends at least one cantilever means.
  • Planar elements are available for the erection of scaffoldings of different kinds, cf. for instance Swedish Patent 201,412, but these elements are not useful for the assembly of hoist masts primarily because they are only intended to support load in one direction, more particularly the longitudinal direction of the scaffolding and therefore have insignificant stability in the transverse direction, whereby they cannot withstand bending stresses.
  • structural elements for hoist masts must permit being assembled in a simple manner also by unskilled labour.
  • the present invention therefore has for its object to provide an element by which the above requirements are satisfied.
  • the pin and the conforming hole of the tube means are adapted each to form one part of a bayonet catch for interlocking tube means in end-to-end relationship, and the tube means has a fastening portion with which that end of the cantilever means of another corresponding element which faces away from the tube means, is connectible for interlocking purposes by the swinging movement performed upon interconnection of two tube means with the aid of the bayonet catch.
  • the hoist mast illustrated in the drawing comprises elements A-D which are connected four by four so as to form one section of the hoist mast. This section is connected at the top and bottom to corresponding sections etc.
  • Each element includes a vertically oriented tube means which is of square cross section and on one side and close to its upper end has a cantilever means 1 l which makes a right angle with the longitudinal direction of the tube means 10.
  • the cantilever means 11 is connected short of its free end 16 to a brace 12 which extends to a point near the opposite end of the tube means 10.
  • Strengthening means 13 are provided between the brace 12 and the tube means 10.
  • the tube means 10 has end plates 14.
  • a pin generally designated 15 to be described more in detail in the following is arranged on the upper end plate 14, while a hole (not shown) to be described more in detail in the following, is formed in the opposite end plate 14 of the tube means 10.
  • the end 16 of the cantilever means 11 which faces away from the tube means 10 is formed with a through bore 17 which is parallel with the axis of the tube means 10.
  • a fastening having two fork arms 18 is provided on one side of the means 10 which side makes a right angle with that side from which the cantilever means 11 projects.
  • the fork arms 18 are disposed above one another as viewed in the longitudinal direction of the means 10 and have a through bore 19.
  • the end 16 of the cantilever means is insertable between the fork arms and can be fixed in position between them with the aid of a headed bolt 20.
  • the tube means 10 has a stud 21 on the same side as and, as viewed in the longitudinal direction of the means 10, opposite to the fork arms 18.
  • Both the cantilever means 11 and the fork arms 18 as well as the stud 21 are of a smaller width than the corresponding side of the tube means 11), whereby all sides of each tube means 10 will be wholly or partly accessible to permit the wheels or rollers of a hoist cage or like device to roll on said sides.
  • the pins 15 at the upper ends of the tube means 10 each include a stem 23 and projections 22 extending at right angles from the upper end of the stem.
  • said projections 22 extend at right angles each to one side of the tube means 10.
  • the hole in the end plate 14 at the opposite end of the tube means 10 is formed in a corresponding manner with a central aperture and recesses extending from the periphery thereof and conforming to the projections 22.
  • the dimensions of the aperture and the projections are such that the pin means 15 is easily insertable therein.
  • the recesses of the aperture do not, however, extend like the projections 22 do at right angles to the side surfaces of the means 10 but are oriented at an angle of 45 in relation thereto, that is they extend towards the corners of the means 10.
  • the distance between respectively the underside of the projections 22 and the side thereof facing the adjacent end surface of the means 10 and said end surface corresponds to the distance between the opposite end surface of the means 10 and the underside of the end plate 14. If a tube means 10 is disposed on top of another tube means and is swung an angle of 45 in the horizontal plane relative to the latter.
  • the pin means 15 can be inserted in a corresponding aperture and then locked in said aperture by rotation of one tube means 10 relative to the other tube means 10 through an angle of 45.
  • the pin means 15 and the corresponding aperture thus constitute a bayonet catch.
  • the projections 22 may be so bevelled at the underside, or specific ramp portions may be provided on the inner side of the end plate 14 having the hole, that upon rotation the tube means 10 are tightened in relation to one another.
  • a hoist mast is erected in the following manner with the aid of the structural elements according to the present invention. It is assumed that a number of elements A-D have already been interconnected; the lowermost elements of the hoist mast are placed on a specific base provided for that purpose. A first element A is then placed on top of another element but swung an angle of 45 in relation to said other element in the end plane of the elements. The pin means of the subjacent element can then be inserted in the conforming hole in the lower end plate 14 of the element A. The two elements are interlocked by rotation through an angle of 45 to make the side surfaces of the element A coincide with those of the subjacent element.
  • the cantilever means 11 need not project at right angles from the tube means 10 but can make another angle with the longitudinal direction of said means 10.
  • the cantilever means 11 need not either be strengthened in the manner illustrated.
  • the fastening need not necessarily have two arms 18 as one arm may be sufficient in certain cases.
  • the position of the stud 21 forming the locking means naturally is dependent upon the orientation and position of the cantilever means 11 and can therefore have various configurations and be provided on both the tube means 10 and some strengthening means of the element.
  • the invention should not be considered limited to the embodiment described above and illustrated in the drawing as it can be modified within the scope of the appended claims.
  • a structural mast having at least three sides and composed of a plurality of identical interengagable structural elements, each element comprising a longitudinal member provided with a male bayonet means at one end and a female bayonet means at the other end, the male bayonet means of a first longitudinal member being securely engaged to the femal bayonet means of a second longitudinal member by relative axial rotation to be coaligned therewith, each longitudinal member being provided with a cantilever means including an upper cantilever arm extending outwardly substantially normal to said longitudinal member a brace means extending upwardly from said longitudinal member to the outer end of said cantilever arm, a first locking means disposed at the outer end of said cantilever arm, a second locking means disposed at one end of said longitudinal member adjacent the inner end of said cantilever arm, and a third locking means disposed at the end of said longitudinal member opposed from said second locking means and in the same vertical plane as said second locking means, the first locking means at the end of the
  • said male bayonet means comprises a pin extending in the longitudinal direction of the longitudinal member and having adjacent its free end projections extending transversely of the longitudinal member
  • said female bayonet member comprising an end plate fastened at the opposed end of the longitudinal member and provided with a hole therein and having recesses extending outwardly from the periphery of the hole through which said projections may be passed, said recesses being oriented at least 30 offset in their end plane in relation to the projections so that two of said longitudinal members are interlocked by engagement of said projections with the underside of said end plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Transportation (AREA)
  • Civil Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Jib Cranes (AREA)
US00198390A 1970-11-13 1971-11-12 Structural elements for the erection of masts, such as hoist and crane masts, antenna masts etc. Expired - Lifetime US3796018A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE15330/70A SE348445B (de) 1970-11-13 1970-11-13

Publications (1)

Publication Number Publication Date
US3796018A true US3796018A (en) 1974-03-12

Family

ID=20300499

Family Applications (1)

Application Number Title Priority Date Filing Date
US00198390A Expired - Lifetime US3796018A (en) 1970-11-13 1971-11-12 Structural elements for the erection of masts, such as hoist and crane masts, antenna masts etc.

Country Status (7)

Country Link
US (1) US3796018A (de)
JP (1) JPS5216328B1 (de)
DE (1) DE2156392A1 (de)
FR (1) FR2113922B1 (de)
GB (1) GB1333460A (de)
IT (1) IT940580B (de)
SE (1) SE348445B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951817A (en) * 1974-06-26 1976-04-20 Jet Aeration Company Sewage treatment tank and tube settler
US5406767A (en) * 1992-11-23 1995-04-18 The Manitowoc Company, Inc. Longitudinally divisible crane boom segment
US5487479A (en) * 1992-11-23 1996-01-30 The Manitowoc Company, Inc. Method for nesting longitudinally divisible crane boom segments
GB2332469A (en) * 1997-12-19 1999-06-23 Simon Andrew Fearn Tower scaffold
EP1061203A3 (de) * 1999-06-15 2001-03-14 Thysen Hünnebeck GmbH Mastelement für ein Gerüst
US6296419B1 (en) * 1998-12-21 2001-10-02 Potain (Societe Anonyme) Device providing a connection between a pivot and a mast structure for tower cranes
WO2013149457A1 (zh) * 2012-04-05 2013-10-10 中联重科股份有限公司 塔机爬升架及包含该爬升架的塔式起重机
US20180283032A1 (en) * 2017-03-31 2018-10-04 Adaptive Communications LLC Systems and methods for self-standing, self-supporting, rapid-deployment, movable communications towers
CN114263665A (zh) * 2021-12-27 2022-04-01 安徽京深智能科技有限公司 一种防侧翻升降机标准节连接结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5465831U (de) * 1977-10-18 1979-05-10

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1800998A (en) * 1930-07-12 1931-04-14 Ingersoll Rand Co Drill-steel coupling
US2842408A (en) * 1956-03-08 1958-07-08 Symons Clamp & Mfg Co Scaffold
FR1373497A (fr) * 1963-10-31 1964-09-25 échafaudage
US3650078A (en) * 1970-09-15 1972-03-21 Economy Forms Corp Shore tower assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1800998A (en) * 1930-07-12 1931-04-14 Ingersoll Rand Co Drill-steel coupling
US2842408A (en) * 1956-03-08 1958-07-08 Symons Clamp & Mfg Co Scaffold
FR1373497A (fr) * 1963-10-31 1964-09-25 échafaudage
US3650078A (en) * 1970-09-15 1972-03-21 Economy Forms Corp Shore tower assembly

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951817A (en) * 1974-06-26 1976-04-20 Jet Aeration Company Sewage treatment tank and tube settler
US5406767A (en) * 1992-11-23 1995-04-18 The Manitowoc Company, Inc. Longitudinally divisible crane boom segment
US5487479A (en) * 1992-11-23 1996-01-30 The Manitowoc Company, Inc. Method for nesting longitudinally divisible crane boom segments
GB2332469A (en) * 1997-12-19 1999-06-23 Simon Andrew Fearn Tower scaffold
GB2332469B (en) * 1997-12-19 2001-11-28 Simon Andrew Fearn Tower scaffold
US6296419B1 (en) * 1998-12-21 2001-10-02 Potain (Societe Anonyme) Device providing a connection between a pivot and a mast structure for tower cranes
EP1061203A3 (de) * 1999-06-15 2001-03-14 Thysen Hünnebeck GmbH Mastelement für ein Gerüst
WO2013149457A1 (zh) * 2012-04-05 2013-10-10 中联重科股份有限公司 塔机爬升架及包含该爬升架的塔式起重机
US20180283032A1 (en) * 2017-03-31 2018-10-04 Adaptive Communications LLC Systems and methods for self-standing, self-supporting, rapid-deployment, movable communications towers
US10107003B1 (en) * 2017-03-31 2018-10-23 Adaptive Communications LLC Systems and methods for self-standing, self-supporting, rapid-deployment, movable communications towers
CN114263665A (zh) * 2021-12-27 2022-04-01 安徽京深智能科技有限公司 一种防侧翻升降机标准节连接结构
CN114263665B (zh) * 2021-12-27 2023-11-24 安徽京深智能科技有限公司 一种防侧翻升降机标准节连接结构

Also Published As

Publication number Publication date
FR2113922B1 (de) 1976-04-30
JPS5216328B1 (de) 1977-05-09
GB1333460A (en) 1973-10-10
FR2113922A1 (de) 1972-06-30
IT940580B (it) 1973-02-20
DE2156392A1 (de) 1972-05-18
SE348445B (de) 1972-09-04

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