US2858945A - Pivoting and hoisting arrangement for the distributing assembly of a tower crane - Google Patents

Pivoting and hoisting arrangement for the distributing assembly of a tower crane Download PDF

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US2858945A
US2858945A US457756A US45775654A US2858945A US 2858945 A US2858945 A US 2858945A US 457756 A US457756 A US 457756A US 45775654 A US45775654 A US 45775654A US 2858945 A US2858945 A US 2858945A
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Prior art keywords
boom
assembly
tower crane
mast
tower
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Expired - Lifetime
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US457756A
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Pingon Pierre Joseph
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M TICHAUER Sarl SOC
M TICHAUER Sarl Ste
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M TICHAUER Sarl SOC
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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
    • 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
    • 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

Definitions

  • the advantages are known which are presented, on building sites, by the use of lifting apparatus of the nature of tower cranes, which are constituted essentially by a rotating distributing assembly mounted on a vertical tower or mast bearing upon a frame, preferably movable upon rails, for example.
  • the distributing assembly composed of a boom and a counter-balancing counter-boom, can rotate alone about the mast, or with a part thereof or even with the said mast, and the support for this rotational movement is most often constituted by a conical pivot, mounted at the head on a thrust-bearing and at its base upon rollers which roll upon an appropriate circular path.
  • this fixed tower facilitates working at great heights, by eliminating the play which causes oscillation, and due to the possibility of support upon the actual edifice being constructed, and this fixed tower is preferably constituted by a framework of square section.
  • the present invention has for its object to efiect, in a simple maner, the pivoting of the rotating assembly, and its movement along the tower of a lifting assembly, obviating the pivot which is a unique and expensive element, and assuring, under the best conditions, the transmission of the coupling of the hoisting engine to the tower itself.
  • Figure 1 is a diagrammatic view, in elevation, of a tower crane provided with the device according to the invention
  • Figure 2 is a diagrammatic plan view of a roller supporting frame
  • Fig. 3 shows at an enlarged scale the uppermost element of the mast with the lifting and turning device for the boom and counter-boom;
  • Fig. 4 is a fragmentary section along the lines 44 of Fig. 3;
  • Fig. 5 is an elevation at enlarged scale of a joint of two elements of the mast.
  • a tower crane equipped with the device comprises a fixed mast of constant square section, constituted by a plurality of standard elements of a height H.
  • Each of these elements comprises, at any desired level, for example at their end, a braced frame C, provided at each angle with two pierced stay-plates or any other arrangement permitting of fixing a roller or a swing arm P carrying two rollers.
  • An arm B mounted at its middle on a pivot B, supported by a thrust-bearing 13 against the upper face of the ultimate element, and of suitable length, slightly greater than the diameter of the collars, supports a pulley at each of its two ends.
  • the hoisting cable commencing from the main hoisting winch T mounted on the base of the boom F, passes over a pulley p at the end of the latter, then into the trolley l and at the base of the boom successively into a removable cable-clamp S and a return pulley p, then rising to the top of the mast in order to pass over the pulleys of the arm B and to be secured to the counterboom at r.
  • the hook u is brought against the trolley l, the removable cable clamp S being released.
  • the winch T raises the distributor assembly; by unwinding, as for lowering, it causes. it to descend again along the mast.
  • the assembly being brought to the position where the two collars are in line with the rollers of two frames provided with swing arms P which carry the rollers, the cable-clamp S is locked, so that a fixed end of the cable part may be used for manipulating the load.
  • a tower crane comprising a mast, a pivot member mounted on top of said mast, an arm, carrying a first pulley at each. end,. rotatably mounted on said pivot member, an assembly comprising an upper and a lower co1lar,.each of said collarshaving. an inner cylindrical face and means for spacing apart said collars ata predetermined distance, said assembly being movable vertically along said mast, aboom. and. a counter-boom disposed opposite said boom. and rigidly secured to said assembly,,said boom and counter-boom moving vertically together with said assembly, a second pulley.
  • braced frames mounted at the inner end of said boom. and a third pulley mounted on the outer end of said boom, a plurality of horizontally disposed braced frames carrying. rollers at their periphery for engagement with said inner face of said collars, each pair of adjacent. braced frames being.
  • the tower crane as set forth in claim 1, which includes a clamping member mounted on said boom and receiving said cable between said second pulley and said carriage for releasably securing said cable and-for rendering inoperative the part of said cable extending between said clamping'member and the upper of said collars.
  • braced frames are of a cross section equal with that of said mast ancl said braced frames include stay plates adapted to receive said rollers.
  • the tower crane as set forth in claim 1, which includes four horizontally. disposed swing bars, each carrying two of said rollers secured to said braced frames, in order to engage said, collars.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Description

PINGON 2,858,945
. P. J. PIVOTING AND HOISTING ARRANGEMENT FOR THE DISTRIBUTING ASSEMBLY OF A TOWER CRANE Filed Sept. 22, 1954 2 Sheets-Sheet 1 Nov. 4, 1958 Fl'g. I
P. J. PINGON Nov. 4, 1958 2,858,945 ING ARRANGEMENT FOR THE 4 SEMBLY OF A TOWER CRANE PIVOTING AND HOIST Filed Sept '22 DISTRIBUTING AS 1954 2 Sheets-Sheet 2 n l I u I u w United States Patent PKVOTING AND HOISTING ARRANGEMENT FOR THE DISTRIBUTING ASSEMBLY OF A TOWER CRANE Pierre Joseph Pingon, Annecy, France, assignor to Societe M. Tichauer, S. a. r. 1., Lyon, France Application September 22, 1954, Serial No. 457,756 Claims priority, application France September 22, 1953 5 Claims. (Cl. 212-64) The present invention relates to pivoting and hoisting arrangements for the distributing assembly of a tower crane. l
The advantages are known which are presented, on building sites, by the use of lifting apparatus of the nature of tower cranes, which are constituted essentially by a rotating distributing assembly mounted on a vertical tower or mast bearing upon a frame, preferably movable upon rails, for example. The distributing assembly, composed of a boom and a counter-balancing counter-boom, can rotate alone about the mast, or with a part thereof or even with the said mast, and the support for this rotational movement is most often constituted by a conical pivot, mounted at the head on a thrust-bearing and at its base upon rollers which roll upon an appropriate circular path.
Numerous improvements have already been made both in the manner of realization of the tower itself, for example by means of standard elements assembled by superposition, and in that of the boom and counter-boom assembly, which may preferably comprise the operating cabin, and more especially in the realization of the members ensuring the vertical movement of this assembly along the tower, permitting of raising it, after mounting on the ground, to the optimum working position, which varies in the course of the construction.
Now the use of a fixed tower facilitates working at great heights, by eliminating the play which causes oscillation, and due to the possibility of support upon the actual edifice being constructed, and this fixed tower is preferably constituted by a framework of square section.
The present invention has for its object to efiect, in a simple maner, the pivoting of the rotating assembly, and its movement along the tower of a lifting assembly, obviating the pivot which is a unique and expensive element, and assuring, under the best conditions, the transmission of the coupling of the hoisting engine to the tower itself.
It is another object of the present invention to provide a pivoting and hoisting arrangement for the distributing assembly of a tower crane, in which the boom and counter-boom, which are made fast with one another by two common uprights, assembled at top and bottom with tie-rods of the latter, made fast with two coaxial circular members spaced by an appropriate distance, constitute an assembly movable along the tower, by means of the actual hoisting cable, one end of which is fixed to the upper circular member, which cable passes over two pulleys mounted at the ends of a rotating arm, provided in the center with a pivot mounted on a thrustbearing, placed against the upper face of the ultimate element of the tower, and the other end of which is wound or unwound on the main hoisting winch, preferably mounted on the boom, this same assembly being capable of rotating about the tower by support of the two circular elements upon rollers which are to be mounted, preferably in removable fashion, upon a plurality of frames disposed along the tower, at intervals 2,858,945 Patented Nov. 4, 1958 corresponding to the spacing of the two circular elements.
It is still another object of the present invention to provide a clamping element disposed on the boom which ensures the fixing of the cable, in releasable fashion, which cable then effects the raising or lowering of the load by its movement between this fixed point thus constituted and the winch.
With these and other objects in view, which will become apparent in the following detailed description, the present invention will be clearly understood in connection with the accompanying drawings, in which:
Figure 1 is a diagrammatic view, in elevation, of a tower crane provided with the device according to the invention;
Figure 2 is a diagrammatic plan view of a roller supporting frame;
Fig. 3 shows at an enlarged scale the uppermost element of the mast with the lifting and turning device for the boom and counter-boom;
Fig. 4 is a fragmentary section along the lines 44 of Fig. 3; and
Fig. 5 is an elevation at enlarged scale of a joint of two elements of the mast.
In accordance with one embodiment of the present invention, given by way of example, a tower crane equipped with the device, comprises a fixed mast of constant square section, constituted by a plurality of standard elements of a height H. Each of these elements comprises, at any desired level, for example at their end, a braced frame C, provided at each angle with two pierced stay-plates or any other arrangement permitting of fixing a roller or a swing arm P carrying two rollers.
Upon the mast there are mounted in sliding fashion two collars V of internal diameter greater than the circle enclosing the square section a of the mast, so that they may serve as surfaces for rolling upon the rollers carried by the frames. These two collars are placed at a distance from one another corresponding to the constant spacing H of the frames. They are joined by two uprights M at the ends of which there are attached the base and end of tie-rods of the boom and counter-boom.
An arm B, mounted at its middle on a pivot B, supported by a thrust-bearing 13 against the upper face of the ultimate element, and of suitable length, slightly greater than the diameter of the collars, supports a pulley at each of its two ends.
The hoisting cable, commencing from the main hoisting winch T mounted on the base of the boom F, passes over a pulley p at the end of the latter, then into the trolley l and at the base of the boom successively into a removable cable-clamp S and a return pulley p, then rising to the top of the mast in order to pass over the pulleys of the arm B and to be secured to the counterboom at r.
In order to bring the assembly of the boom F and of the counter-boom CF, disposed at the bottom of the mast, to the optimum working height, the hook u is brought against the trolley l, the removable cable clamp S being released. By winding up, the winch T raises the distributor assembly; by unwinding, as for lowering, it causes. it to descend again along the mast.
At the desired Working height, the assembly being brought to the position where the two collars are in line with the rollers of two frames provided with swing arms P which carry the rollers, the cable-clamp S is locked, so that a fixed end of the cable part may be used for manipulating the load.
It will be understood that the force exerted by the hoistingengine is thus taken up by the two collars rotating on the rollers of the swing-arms P, which transmit the forces to the crane through the intermediary of the frames C.
The vertical forces, the actual weight of the rotating assembly in addition to the load, are transmitted to the top structure upon which the arm B rotates.
Modifications of detail can be. made in the forms, dimensions. and. arrangements of the form. of embodiment described and represented, without departing from the scope of the invention.
While I- have disclosed, one embodimentof the present invention, it is. to be understood that. this embodiment is given by example only and not in a limiting sense, the scope of the present invention being determined by the objects and the claims.
I claim:
1. A tower crane comprising a mast, a pivot member mounted on top of said mast, an arm, carrying a first pulley at each. end,. rotatably mounted on said pivot member, an assembly comprising an upper and a lower co1lar,.each of said collarshaving. an inner cylindrical face and means for spacing apart said collars ata predetermined distance, said assembly being movable vertically along said mast, aboom. and. a counter-boom disposed opposite said boom. and rigidly secured to said assembly,,said boom and counter-boom moving vertically together with said assembly, a second pulley.
' mounted at the inner end of said boom. anda third pulley mounted on the outer end of said boom, a plurality of horizontally disposed braced frames carrying. rollers at their periphery for engagement with said inner face of said collars, each pair of adjacent. braced frames being.
spaced apart a distance equal with the distance of said collars, a carriage traversable. long; said boom and carryinga hook, and a main hoisting winch mounted on said boom, said main hoisting winch carrying. a cable, the free end of said cable being securedto the upper of said collars and passing from the latter over the said first pulleys of said arm, over said second pulley, said carriage and said third pulley, to said winch, so that upon rotating said winch in one direction said assembly together with said boom and counter-boom will be lifted along said mast and upon rotating said'winch in the other direction will be lowered. along said mast.
2. The tower crane, as set forth in claim 1, which includes a clamping member mounted on said boom and receiving said cable between said second pulley and said carriage for releasably securing said cable and-for rendering inoperative the part of said cable extending between said clamping'member and the upper of said collars.
3. The tower crane, as set forth in claim 1, in which said braced frames are of a cross section equal with that of said mast ancl said braced frames include stay plates adapted to receive said rollers.
4. The tower crane, as set forth in claim 1, in which said assembly includes two substantially; vertically disposed uprights and said boom and counter-boom are secured to said two uprights.
5. The tower crane, as set forth in claim 1, which includes four horizontally. disposed swing bars, each carrying two of said rollers secured to said braced frames, in order to engage said, collars.
References Cited in the file of this patent UNITED STATES PATENTS 870,922 Allen Nov. 12, 1907 921,198 Busing May 11, 1909 1,011,739 Campistrou Dec. 12, 19.11 1,352,575 Bingaman Sept. 14, 1920 2,413,701 Faure et al. Jan. 7, 1947
US457756A 1953-09-22 1954-09-22 Pivoting and hoisting arrangement for the distributing assembly of a tower crane Expired - Lifetime US2858945A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3193109A (en) * 1962-07-31 1965-07-06 Stothert & Pitt Ltd Slewing and erecting motor for tower cranes
US3258130A (en) * 1963-04-11 1966-06-28 Internaz N Baumaschinen Arrangement controlling the pivoting arm of a crane and cranes incorporating said arrangement
US20030121875A1 (en) * 2001-03-21 2003-07-03 Larry Davis Tower crane device
US9062824B2 (en) 2013-03-12 2015-06-23 Konecranes Plc Head assembly for jacking tower

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US870922A (en) * 1907-07-13 1907-11-12 Jacob S Allen Jr Derrick.
US921198A (en) * 1907-02-02 1909-05-11 Alfred Bode Crane with revolving jib sluing a complete circle.
US1011739A (en) * 1910-11-18 1911-12-12 Maxime Campistrou Crane.
US1352575A (en) * 1919-03-20 1920-09-14 Charles A Bingaman Crane
US2413701A (en) * 1941-09-24 1947-01-07 Faure Andre Crane

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US921198A (en) * 1907-02-02 1909-05-11 Alfred Bode Crane with revolving jib sluing a complete circle.
US870922A (en) * 1907-07-13 1907-11-12 Jacob S Allen Jr Derrick.
US1011739A (en) * 1910-11-18 1911-12-12 Maxime Campistrou Crane.
US1352575A (en) * 1919-03-20 1920-09-14 Charles A Bingaman Crane
US2413701A (en) * 1941-09-24 1947-01-07 Faure Andre Crane

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3193109A (en) * 1962-07-31 1965-07-06 Stothert & Pitt Ltd Slewing and erecting motor for tower cranes
US3258130A (en) * 1963-04-11 1966-06-28 Internaz N Baumaschinen Arrangement controlling the pivoting arm of a crane and cranes incorporating said arrangement
US20030121875A1 (en) * 2001-03-21 2003-07-03 Larry Davis Tower crane device
US7147117B2 (en) 2001-03-21 2006-12-12 Federated Equipment Co. Llc Tower crane device
US7290672B2 (en) 2001-03-21 2007-11-06 Federated Equipment Co. Llc Tower crane device
US9062824B2 (en) 2013-03-12 2015-06-23 Konecranes Plc Head assembly for jacking tower

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