EP1873113A1 - Zerlegbare Vorrichtung zur Montage von Mastelementen eines Turmdrehkrans - Google Patents

Zerlegbare Vorrichtung zur Montage von Mastelementen eines Turmdrehkrans Download PDF

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Publication number
EP1873113A1
EP1873113A1 EP07356043A EP07356043A EP1873113A1 EP 1873113 A1 EP1873113 A1 EP 1873113A1 EP 07356043 A EP07356043 A EP 07356043A EP 07356043 A EP07356043 A EP 07356043A EP 1873113 A1 EP1873113 A1 EP 1873113A1
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EP
European Patent Office
Prior art keywords
screw
assembly device
removable assembly
mast
end portions
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.)
Granted
Application number
EP07356043A
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English (en)
French (fr)
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EP1873113B1 (de
Inventor
Jean-Paul Verchere
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.)
Manitowoc Crane Group France SAS
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Manitowoc Crane Group France SAS
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Publication of EP1873113A1 publication Critical patent/EP1873113A1/de
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Publication of EP1873113B1 publication Critical patent/EP1873113B1/de
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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
    • 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

Definitions

  • the present invention relates generally to the field of tower cranes having a lattice metal frame. More particularly, this invention relates to a removable assembly device for joining the mast elements of such a tower crane.
  • the mast of a tower crane may consist of stackable mast elements, intended to be assembled together, or separated from each other, depending on whether it is desired to raise or raise the crane, or on the contrary to disassemble it.
  • the mast elements usually of square horizontal section, each consist of four vertical corner members, joined in pairs on the four lateral faces of the mast element by a triangulation composed of horizontal crosspieces and oblique bars also called diagonals.
  • the mast members When the crane is mounted, the mast members are vertically arranged one above the other, and they are rigidly connected to each other by the close ends of their corner members.
  • the so-called "end-to-end" connections between the corner members must ensure the continuity of the mast uprights, as well as the transmission of the longitudinal and transverse forces resulting from the various stresses to which the crane is subjected.
  • all these devices comprise an end portion of a frame of a mast element, and a complementary end portion of an angle member of another mast element, as well as connecting means. between the two end parts.
  • a first category of splinting devices uses, for the connection of the ends of the frames of two consecutive mast elements, shear axes that is to say connecting axes perpendicular to the longitudinal direction of the frames, ie in the position of use) horizontal axes, which pass through end portions of the kind "tenon" provided at the ends of the frames.
  • shear axes are in particular provided in two orthogonal directions.
  • Such assembly devices include patents European EP 0530114 and EP 0974546 , the patent application German DE 3936257 and the patent US 3511388 (The latter document, however, aimed at a crane boom).
  • a second category of splints employs pull bolts, which connect the ends of the frames of two consecutive mast members extending in an orientation parallel to the longitudinal direction of the frames, ie (in the use position) in a vertical direction.
  • two traction bolts are respectively disposed near two diametrically opposite angles of the ends of the frames to be connected.
  • the traction members must necessarily be arranged symmetrically with respect to the ribs.
  • the present invention aims to remedy all the previously mentioned disadvantages, and is therefore intended to provide a removable assembly device for the mast elements of a tower crane, which on the one hand removes all external asperities in order to allow a relative sliding of mast elements separated by a minimum clearance, and on the other hand minimizes the number of connecting members to allow a faster assembly and disassembly, the design of this assembly device being particularly suitable the specificity of the efforts to be transmitted between the mast elements of a tower crane
  • the screw clamping means comprise, on the one hand, a connecting screw with an axis parallel to the longitudinal axis of said end portions, provided with a head with operating part housed in the recess of one of the end parts, and secondly, a nut secured to the other end part, the two end portions having bores of axis parallel to their longitudinal axis for the passage of the rod of the screw towards the nut.
  • the axis of the connecting screw passes substantially through the center of the section of the end portions of the corner members.
  • the removable assembly device uses in practice a single connecting screw which is arranged vertically inside the horizontal section of the frames and in particular their end portions, particularly in the center of the section. chords, the head of this screw is nevertheless made accessible for its maneuver using a suitable key, which eliminates any lateral asperity that would prevent the free sliding of one mast element relative to another.
  • a single connecting bolt per chord allows rapid assembly and disassembly of the mast of the crane concerned.
  • the bearing surfaces, one male and the other female, of the two half-splices transmit the shear forces and the torsion torques due to the wind and to the crane rotation forces, that of an element from one mast to the other, while facilitating the alignment of the corner members of these mast members, with catching of any misalignment of the members.
  • the head of the connecting screw comprises diametrical bores intended to receive an immobilization pin of the screw in the tight position.
  • a pin can here ensure immobilization in translation of the pin inserted into a diametrical bore of the head of the connecting screw. Thus, after complete tightening of the screw, it is effectively prevented from loosening.
  • a housing may be hollowed on the underside of the recess of the first end portion, this housing receiving the head of the connecting screw or a part of this screw head, in the loosened position of the screw.
  • the rod of the connecting screw may have towards its end at least one diametrical bore adapted to receive, in the loosened position of the screw, a securing pin of the screw with the corresponding end portion.
  • the nut which cooperates with the connecting screw, it is advantageously mounted interchangeably in a corresponding recess of the other end portion, the holding in position of the nut being preferably provided by a pin.
  • the removability of the nut allows its replacement in case of damage, the corresponding end portion remaining in place at the end of the corner frame.
  • FIG. 1 shows, partially, two consecutive mast elements, superimposed, which belong to the vertical mast of a tower crane.
  • Each mast element 1 has a horizontal section of square shape, and it comprises four corner members 2 (only one being here visible), arranged vertically in the use position and connected in pairs, on the four lateral faces of the frame.
  • mast element 1 by a triangulation composed of horizontal crosspieces 3 and oblique bars 4, also referred to as "diagonals".
  • Each member 2 is in the form of a tubular profile of substantially square horizontal section, the orientation of which is similar to that of the square section of the mast member 1 to which it belongs.
  • a removable assembly device which provides the "end-to-end” connection between the corresponding corner members 2 of these mast elements 1.
  • the device of FIG. the dismountable assembly shown as a whole in FIG. 1, comprises a first end piece or half-splice piece 5 placed at the top of each corner frame 2 of the lower mast member 1, and a second end piece or half piece splint 6, complementary to the first, placed at the base of the corresponding corner frame 2 of the upper mast element 1.
  • This dismountable assembly device also comprises a single connecting screw 7 and a nut 8.
  • the first half-splice 5, clearly visible in Figures 2 and 3, has a horizontal section of generally square shape and, in particular, its lower portion 9 has a reduced square section which is engaged and fixed, by welding, in the upper end of the corner frame 2 of the lower mast element 1.
  • the upper part of the first half-splice 5 has, along the vertical axis 10 of this half-splice 5, a conical female bearing surface 11.
  • the first half-splice 5 has a large recess 12, which opens out on two adjacent lateral faces 13 of this half-splice 5.
  • a cylindrical housing 14 is hollow, along the axis 10, on the lower face of the recess 12 in the lower part 9 of the half-splice 5.
  • the second half-splice 6, shown alone (in the inverted position) in FIG. 4, has a horizontal section of generally square shape and, in particular, its upper portion 17 has a reduced square section which is engaged and fixed, by welding, in the lower end of the corner frame 2 of the upper mast element 1, as also shown in Figure 1.
  • the lower part of the second half-splice 6 has, along the vertical axis 18 of this half-splice 6, a conical male bearing surface 19, complementary to the conical female bearing surface 11 of the first half-splice 5.
  • the second half-splice 6 has a recess 20, which opens out on a lateral face 21 of this half-splice 6.
  • a bore 22, centered on the axis 18 of the half-splice 6, passes through the recess 20 and opens at the lower end of this half-splice 6, in other words at the tip of the conical surface 19.
  • the connecting screw 7 has a cylindrical head 23, and a rod 24 with an external thread.
  • the screw head 23 has several diametrical holes 25, as shown in particular in Figure 6.
  • This screw head 23 is also provided with an actuating portion 26, for example with a hollow recess of square section.
  • Another diametrical bore 27 is formed at the end of the rod 24 of the screw 7.
  • This screw 7 is introduced laterally into the recess 12 of the first half-splice 5, so as to be positioned along the vertical axis 10 of this half-splice 5, the head 23 of the screw 7 is located at the bottom and its rod 24 being directed upwards.
  • the nut 8 whose internal thread is complementary to the external thread of the rod 24 of the screw 7, is introduced into the recess 20 of the second half-splice 6.
  • This nut 8, interchangeable, is held in position on the half-splice 6 by means of a pin 28, as shown in Figure 1.
  • the screw 7 is then tightened, using a suitable key 29 such as a ratchet inserted laterally into the recess 12 of the first half-splice 5, so that the rod 24 of this screw 7 is screwed into the nut 8 secured to the second half-splice 6.
  • a suitable key 29 such as a ratchet inserted laterally into the recess 12 of the first half-splice 5, so that the rod 24 of this screw 7 is screwed into the nut 8 secured to the second half-splice 6.
  • the screw 7 is immobilized in rotation, thus prevented from loosening, by the introduction of a pin 30 in one of the diametrical holes 25 of its head 23.
  • the pin 30 is engaged through the lateral opening 16 of the first half-splice 5, and this peg 30 is itself immobilized in translation by a pin 31 (see Figure 6).
  • the screw 7 is loosened after removal of the pin 31 and the pin 30, which allows the lifting of the angle member 2 of the upper mast member 1, so the separation of the two half-splices 5 and 6.
  • the screw 7 In the loose position, as shown in Figure 5, the screw 7 remains housed in the recess 12 of the first half-splice 5. More particularly, the operating portion 26 of the screw head 23 takes place in the housing 14 dug on the lower face of the recess 12. A pin 32 introduced into the bore 27 located at the end of the rod 24 of the screw 7 ensures in this position a fastening of the screw 7 with the half-splice 5.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP20070356043 2006-06-28 2007-04-05 Zerlegbare Vorrichtung zur Montage von Mastelementen eines Turmdrehkrans Active EP1873113B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0605815A FR2903094B1 (fr) 2006-06-28 2006-06-28 Dispositif d'assemblage demontable pour elements de mat d'une grue a tour

Publications (2)

Publication Number Publication Date
EP1873113A1 true EP1873113A1 (de) 2008-01-02
EP1873113B1 EP1873113B1 (de) 2009-05-06

Family

ID=37667212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070356043 Active EP1873113B1 (de) 2006-06-28 2007-04-05 Zerlegbare Vorrichtung zur Montage von Mastelementen eines Turmdrehkrans

Country Status (5)

Country Link
EP (1) EP1873113B1 (de)
DE (1) DE602007001052D1 (de)
ES (1) ES2326562T3 (de)
FR (1) FR2903094B1 (de)
RU (1) RU2425792C2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20159180A1 (it) * 2015-12-22 2017-06-22 Gp Autolift S R L Elemento modulare a traliccio a montaggio semplificato per torri di gru a torre e torre comprendente tale elemento modulare.
CN116143005A (zh) * 2023-04-20 2023-05-23 四川宏升重工机械有限公司 一种锁固式塔吊架及其使用方法
FR3132041A1 (fr) 2022-01-26 2023-07-28 Manitowoc Crane Group France Outil de vissage/dévissage adapté pour une vis ou un boulon difficile d’accès, en particulier sur un mât ou une flèche de grue

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110723663A (zh) * 2019-10-21 2020-01-24 徐州瑞益晟机械有限公司 一种塔机标准节螺栓紧固装置
CN113339203B (zh) * 2021-04-16 2023-01-10 大唐新疆清洁能源有限公司 一种风力机塔架螺栓松动的报警系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063523A (en) * 1959-08-31 1962-11-13 A D Goodwin & Son Inc Boom
US3511388A (en) * 1967-09-18 1970-05-12 Manitowoc Co Pin connection for elongate load supporting boom structure
FR2184418A1 (de) * 1972-05-16 1973-12-28 Richier Sa
DE3936257A1 (de) * 1989-10-31 1991-05-02 Man Ghh Krantechnik Bolzenverbindung fuer eckstiele eines kranturms
EP0530114A1 (de) * 1991-08-30 1993-03-03 Potain Lösbare Verbindungsvorrichtung für metallische Gerüstelemente
EP0974546A1 (de) * 1998-07-24 2000-01-26 Potain Verbindungsvorrichtung für metalische Gitterelementen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063523A (en) * 1959-08-31 1962-11-13 A D Goodwin & Son Inc Boom
US3511388A (en) * 1967-09-18 1970-05-12 Manitowoc Co Pin connection for elongate load supporting boom structure
FR2184418A1 (de) * 1972-05-16 1973-12-28 Richier Sa
DE3936257A1 (de) * 1989-10-31 1991-05-02 Man Ghh Krantechnik Bolzenverbindung fuer eckstiele eines kranturms
EP0530114A1 (de) * 1991-08-30 1993-03-03 Potain Lösbare Verbindungsvorrichtung für metallische Gerüstelemente
EP0974546A1 (de) * 1998-07-24 2000-01-26 Potain Verbindungsvorrichtung für metalische Gitterelementen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20159180A1 (it) * 2015-12-22 2017-06-22 Gp Autolift S R L Elemento modulare a traliccio a montaggio semplificato per torri di gru a torre e torre comprendente tale elemento modulare.
EP3184479A1 (de) * 2015-12-22 2017-06-28 GP Autolift S.r.l. Gittermodulelement mit vereinfachter montage für türme durch turmkräne und turm mit einem solchen modulelement
FR3132041A1 (fr) 2022-01-26 2023-07-28 Manitowoc Crane Group France Outil de vissage/dévissage adapté pour une vis ou un boulon difficile d’accès, en particulier sur un mât ou une flèche de grue
EP4219077A1 (de) 2022-01-26 2023-08-02 Manitowoc Crane Group France Schraub-/schraubwerkzeug für eine schraube oder einen schwer zugänglichen bolzen
CN116143005A (zh) * 2023-04-20 2023-05-23 四川宏升重工机械有限公司 一种锁固式塔吊架及其使用方法
CN116143005B (zh) * 2023-04-20 2023-06-27 四川宏升重工机械有限公司 一种锁固式塔吊架及其使用方法

Also Published As

Publication number Publication date
RU2007124278A (ru) 2009-01-10
DE602007001052D1 (de) 2009-06-18
FR2903094B1 (fr) 2009-02-27
EP1873113B1 (de) 2009-05-06
RU2425792C2 (ru) 2011-08-10
FR2903094A1 (fr) 2008-01-04
ES2326562T3 (es) 2009-10-14

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