US3863773A - Rotary tower crane suitable for highway transportation - Google Patents

Rotary tower crane suitable for highway transportation Download PDF

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Publication number
US3863773A
US3863773A US377757A US37775773A US3863773A US 3863773 A US3863773 A US 3863773A US 377757 A US377757 A US 377757A US 37775773 A US37775773 A US 37775773A US 3863773 A US3863773 A US 3863773A
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United States
Prior art keywords
boom
tower
guide
crane
movement
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Expired - Lifetime
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US377757A
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English (en)
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Elmar Reich
Alfons Kohle
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    • 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
    • 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
    • B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
    • B66C23/342—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes with telescopic elements

Definitions

  • ABSTRACT A rotary tower crane which can be converted from an [30] Foreign Application Priority Data operating mode in which the crane boom extends transversely beyond the vertical axis of the crane July 10,1972 Germany 2233828 tower to a mode suitable for transportation of the crane, in which mode the boom is at least partially 212/46 housed within the tower of the crane.
  • the boom and [58] Fie'ld B 64 33 upper portion of the tower include apparatus which 5 enables the boom to move to a position substantially coaxial with the axis of the tower, from which position [56] References Cited at least a portion of the boom is telescoped into the UNITED STATES PATENTS tower of the 3,189,189 6/1965 Waetun et al 212/46 B 7 Clalms, 2 Drawmg Flglres PATENTEDFEB 4mm 3.863.773
  • Rotary tower cranes have become increasingly popular in the construction field and they have been developed in several different embodiments for many varied uses. These cranes consist, essentially, of a vertical tower and a boom, pivoted to the tower. Some of the booms, often referred to as needle-type booms, can be adjusted with respect to the horizontal inclination of the boom, while other booms, often referred to as crabtype booms, tend to have a fixed horizontal attitude with a crab moving along the length of the boom.
  • the tower of the crane and/or the boom is often composed of several detachable sections, which can be added or taken away in order to adjust the length of either the tower or the boom.
  • the boom is composed of two or more sections
  • the separate sections of the boom are hinged so that they can be folded to be placed in a more compact arrangement.
  • both the tower and the boom have hinged sections and both the tower and the boom are folded upon each other and then laid parallel to each other alongside or in vertical relationship.
  • the tower crane when placed in the compact or transportation mode, still has a substantially larger cross-sectional and/or length dimensions than does the crane when assembled in the operating mode.
  • the present invention provides a rotary tower crane which can be converted from an operating mode in which the boom extends transversely boyond the vertical axis of the crane tower to a transportation mode in which the boom of the crane is at least partially housed within the crane tower.
  • the boom and the upper portion of the crane tower include apparatus which enables the boom to move to a position substantially coaxial with the axis of the tower and then telescope at least partially into the tower.
  • Another object of the present inventions is to provide a rotary tower crane, which can be quickly and easily converted from an operating mode to a transportation mode.
  • Still another object of the present invention is to provide a rotary tower crane in which the hoisting apparatus employed in the operating mode of the crane is used in effecting the conversion of the crane between the operating mode and the transportation mode.
  • An additional object of the present invention is to provide a rotary tower crane which does not require extensive specialized equipment for converting between the operating mode and the transportation mode of the apparatus.
  • a further object of the present invention is to provide a rotary tower crane which allows the crane boom to be telescoped into the crane tower withoutdisassembly of the boom from the tower during conversion from one mode of operation to the other.
  • Yet another object of the present invention is to provide a rotary tower crane which can be converted between the operating mode and the transportation mode with a minimum of operating personnel.
  • Another object of the present invention is to provide a rotary tower crane which can be converted between operating and transportation modes and provides a minimum corss-sectional area when arranged in the transportation mode.
  • Still another object of the present invention is to provide a rotary tower crane, convertible between an operating mode and a transportation mode, which is relatively rugged and durable, and relatively inexpensive to fabricate.
  • Another object of the present invention is to provide a rotary tower crane convertible between an operating mode and a transportation mode, which includes apparatus for moving an operating cab within the tower of the crane to guide in telescoping the boom of the crane into the tower during conversion from the operating mode of the crane to the transportation mode of the crane.
  • FIG. 1 depicts a portion of a rotary tower crane built in accordance with the teachings of the present invention, showing the top portion of the crane tower and the adjacent portion of the boom, with the boom positioned in the operating mode of the crane.
  • FIG. 2 shows a similar portion of another embodiment of a rotary tower crane built in accordance with the teachings of the present invention, in which the boom is moved to the vertical position prior to being telescoped into the tower of the crane to convert the crane to the transportation mode.
  • a rotary tower crane having a boom, generally indicated at l, substantially horizontally mounted on top of a vertical tower, generally indicated at 2.
  • a crab, generally indicated at 4 including a hoist block 4', is drawn by means of a tackle line 5 along a set of rails 3 mounted on the bottom portion of the horizontal boom.
  • the boom 1 is braced by means of a line 6 connected at one end to an anchoring point 6 (see FIG. 2) on the boom and connected at its other end to an upper corner of a triangular trestle member or boom articulating means 7.
  • the second upper end of the triangular trestle member 7 is an anchoring point for a line 8, which exerts a counterclockwise motion on the trestle to balance the pull from line 6.
  • the third corner of the trestle is connected to the triangular bracing 2' at the head of the tower so that the entire trestle 7 and, additionally, the entire boom 1 can revolve about an axis 9 which is perpendicular to the ve t ca axisgflhetowerl-
  • a guide truck 10 is connected to the head of vertical tower 2 by means of a swing arm 12 which pivots with respect to the tower at pivot connection 13, the axis of which connection is parallel to the pivoting axis 9 of the connection between the triangular trestle, 7 boom 1 and the tower support brace 2.
  • a plurality of wheels or rollers 11 are mounted in the guide truck 10 to contact the track 3, to guide movement of the boom with relation to the vertical tower to be described below.
  • the guide truck 10 or the swing arm 12 is locked.
  • the connection at the axis of rotation 9 between the boom and the triangular bracing 2 at the head of the tower is loosened, the boom being supported by line 5, as described below.
  • many cranes have an operators cab 15 mounted within the tower which can be moved in the tower to compensate for changes of height in the tower.
  • the cab 15 is detachably connected by means of supporting structure 16 to the tower support brace assembly 2 to maintain the tower cab in a position underneath the boom during operation.
  • the entire cab can be moved down into the tower during the telescoping operation of the boom by merely detaching the supporting structure 16 from the tower supporting brace structure 2 and connecting it instead to the structure of the boom 1 as, for example, at points 17 where the supporting structure 15 passes the rear framework of the boom 1.
  • the supporting structure 16 can be detachably connected to the tower support brace assembly 2' as well as to the framework of the boom at points 17 by any convenient meams well known in the state of the fastening art.
  • the cab will then ride down into the tower with the boom.
  • guide apparatus for raising and lowering the cab is provided for the cab either inside the tower or on the cab (not shown), it is possible to use the guide apparatus for the cab as a guide in telescoping the boom into the tower. This is accomplished by merely connecting the cab to the boomand then using the cab as a lead for the boom into the tower.
  • This guide function for the cab could be in addition to or could replace the guide function of the'guide truck coacting with boom rails Erecting the rotary tower crane from the transportation mode to the operating mode occurs in the reverse sequence described for the conversion from the operating mode into the transportation mode.
  • FIG. 1 While the drawings do not show the apparatus for ro tating the boom about the longitudinal axis of the tower, several different apparatuses for accomplishing this purpose could be compatibly used with the apparatus shown for pivoting the boom from the horizontal position to the vertical position for telescoping into the tower.
  • an axially rotatable section for the tower could be provided, which would work either in conjunction with or allow axial rotation independently of the base section of the tower used for pivoting the entire tower from the vertical to the horizontal position.
  • the head of the tower or any other intermediate section of the tower could include a section capable of providing the axial rotation of the tower necessary for rotating the boom about the tower in the operating mode.
  • both the tower and the boom can be formed from several sections, which sections can either be detachable or telescopable. lf detachable, then intermediate sections of the boom and/or tower can be removed for purposes of shipping or changing the size of the crane in the operating mode. If these sections are telescopable, then either the boom and/or the tower can be telescoped separately prior to transportation and then, in turn, the telescoped boom and/or tower can be placed in the telescope relationship with each other to provide for a minimum of space when arranged in the transportation mode. For a completely telescoped assembly, the largest boom section would have to be smaller than the smallest telescoping tower section so that the entire boom could lie within the telescoped sections of the tower when the entire assembly is in the fully telescoped position.
  • the tower could be composed of a lower section of substantially greater cross section and a second upper portion having sections of substantially smaller cross sections including a rotary head for the tower, all of which sections could then be telescoped within the larger sections and then the boom telescoped down with the telescoped tower.
  • a tower crane comprising:
  • a tower having a lengthwise axis adapted to stand vertically during hoisting operations of said crane;
  • a boom for hoisting having a lengthwise axis adapted to extend transversely from the lengthwise axis of said tower during hoisting operations of said crane;
  • boom actuating means extending transverse from the lengthwise axis of said boom
  • said tower guide means and said boom guide means relatively disposed to allow said boom to move into and out of said tower upon lengthening and shortening of said line means;
  • guide truck means adapted to coact with said boom to guide movement of said boom
  • an operator cab means disposed within said tower and movable along the lengthwise axis of said tower;
  • guide truck means adapted to coact with said boom to guide movement of said boom
  • a crab means movable along the length of said boom
  • said line means is included in the tackle for said crab means.
  • said means to guide said movement of said boom into and out of said tower comprise:
  • guide truck means adapted to coact with said boom to guide movement of said boom; means pivotally connecting said guide truck means to said tower to position said guide truck means to guide said boom in telescopic movement with relation to said tower; and further comprising:
  • an operator cab means disposed within said tower and movable along the lengthwise axis of said tower; and 7 means rigidly-connecting said operator cab means to said boom means to enable said cab means to act as a guide for movement of said boom in telescoping relationship with said tower.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Jib Cranes (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
US377757A 1972-07-10 1973-07-09 Rotary tower crane suitable for highway transportation Expired - Lifetime US3863773A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2233828A DE2233828C3 (de) 1972-07-10 1972-07-10 Straßenverfahrbarer Turmdrehkran

Publications (1)

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US3863773A true US3863773A (en) 1975-02-04

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US377757A Expired - Lifetime US3863773A (en) 1972-07-10 1973-07-09 Rotary tower crane suitable for highway transportation

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US (1) US3863773A (enrdf_load_stackoverflow)
JP (1) JPS5614596B2 (enrdf_load_stackoverflow)
DE (1) DE2233828C3 (enrdf_load_stackoverflow)
FR (1) FR2192058B1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS562519A (en) * 1979-06-21 1981-01-12 Ricoh Co Ltd Display method of mtf measuring instrument

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189189A (en) * 1962-07-03 1965-06-15 Byggeriets Maskinstationer Akt Collapsible crane with interiorly housed jib
US3252585A (en) * 1964-12-21 1966-05-24 Harnischfeger Corp Rigging for mobile tower crane having a topping jib-boom

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS432554Y1 (enrdf_load_stackoverflow) * 1964-12-25 1968-02-01

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189189A (en) * 1962-07-03 1965-06-15 Byggeriets Maskinstationer Akt Collapsible crane with interiorly housed jib
US3252585A (en) * 1964-12-21 1966-05-24 Harnischfeger Corp Rigging for mobile tower crane having a topping jib-boom

Also Published As

Publication number Publication date
JPS5614596B2 (enrdf_load_stackoverflow) 1981-04-04
JPS4943343A (enrdf_load_stackoverflow) 1974-04-24
DE2233828B2 (de) 1975-02-20
DE2233828C3 (de) 1975-09-25
FR2192058B1 (enrdf_load_stackoverflow) 1978-02-10
DE2233828A1 (de) 1974-01-24
FR2192058A1 (enrdf_load_stackoverflow) 1974-02-08

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