FR2519620A1 - ASSEMBLY GROUP FOR METAL STRUCTURE ELEMENTS, ESPECIALLY CRANES - Google Patents
ASSEMBLY GROUP FOR METAL STRUCTURE ELEMENTS, ESPECIALLY CRANES Download PDFInfo
- Publication number
- FR2519620A1 FR2519620A1 FR8300314A FR8300314A FR2519620A1 FR 2519620 A1 FR2519620 A1 FR 2519620A1 FR 8300314 A FR8300314 A FR 8300314A FR 8300314 A FR8300314 A FR 8300314A FR 2519620 A1 FR2519620 A1 FR 2519620A1
- Authority
- FR
- France
- Prior art keywords
- uprights
- holes
- assembly group
- plates
- pins
- 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
Links
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
Abstract
Description
Groupe d'assemblage pour éléments de structures métalliques, en particulier de grues.Assembly group for elements of metal structures, in particular cranes.
La présente invention concerne un groupe d'assemblage entre éléments de structures métalliques, particulièrement capable de joindre rigidement entre eux les éléments de colonne des grues à tour. The present invention relates to an assembly group between elements of metal structures, particularly capable of rigidly joining together the column elements of tower cranes.
On utilise actuellement différents procédés pour unir entre eux les montants des éléments des colonnes composant les grues à tour. Various methods are currently used to join together the uprights of the elements of the columns making up the tower cranes.
On a pensé, par exemple, à réaliser la jonction des montants par emboitement, en conférant à leurs extrémités des profils complémentaires pour permettre leur emboîtement réciproque. Les montants sont ensuite bloqués l'un-dans l'autre au moyen de goujons qui les traversent dans la zone d'emboîte- ment et qui y sont fixés par des goupilles. It has been thought, for example, to achieve the junction of the uprights by interlocking, by conferring on their ends complementary profiles to allow their mutual interlocking. The uprights are then locked one inside the other by means of studs which pass through them in the nesting zone and which are fixed to them by pins.
Cette solution présente principalement le grave défaut d'être très peu fiable. En effet les efforts de torsion résultant des mouvements de rotation de la grue peuvent au bout de quelque temps provoquer la rupture des goupilles et la sortie des goujons hors des trous correspondants des montants, avec les conséquences qu'on peut imaginer. This solution mainly presents the serious defect of being very unreliable. Indeed the torsional forces resulting from the rotational movements of the crane can after some time cause the pins to break and the pins to come out of the corresponding holes in the uprights, with the consequences that one can imagine.
Un autre procédé, assurément plus fiable que le précédent, consiste à superposer les montants correspondants des différents éléments de colonne en les reliant et en les bloquant l'un l'autre au moyen de plaques fixées à leurs parois à l'aide des boulons. Another method, certainly more reliable than the previous one, consists of superimposing the corresponding amounts of the different column elements by connecting them and blocking them one by means of plates fixed to their walls using bolts.
Mais de nombreux boulons sont nécessaires pour chaque plaque si l'on veut atteindre un haut degré de sécurité. Cela conduit à perdre beaucoup de temps, au cours de la phase de montage, pour serrer les boulons et au cours de la phase de démontage, pour les ôter.But many bolts are required for each plate if you want to achieve a high degree of security. This leads to wasting a lot of time, during the assembly phase, for tightening the bolts and during the disassembly phase, for removing them.
Pour éviter cet inconvénient, on a pensé également à souder chaque plaque à l'un des deux montants correspondants à relier, et de fixer ensuite l'autre montant à cette plaque, une fois ce montant superposé au précédent au moyen de goujons et de goupilles correspondantes. Mais la soudure de toutes les plaques nécessaires augmente, d'une manière non négligeable, les coûts de production. To avoid this drawback, it has also been thought to weld each plate to one of the two corresponding uprights to be connected, and then to fix the other amount to this plate, once this amount is superimposed on the previous one by means of studs and pins. corresponding. But the welding of all the necessary plates increases, in a non negligible way, the production costs.
I1 convient d'ajouter que tous les procédés susvisés, et aussi d'autres procédés, ont en commun la caractéristique que le monteur doit en pratique enfiler des tiges dans une série de trous pratiqués dans différentes pièces qui ne sont unies qu'au moment du montage de la grue (dans le procédé à emboSte- ment, par exemple, le monteur doit enfiler des gou jons dans des trous appropriés, creusés dans les extrémités des montants pour réaliser l'union de ces derniers). Si les trous traversés par le goujon correspondant ne sont pas parfaitement alignés, cette opération d'enfilage est évidemment laborieuse et fatigante, la tige devant être forcée dans les trous. It should be added that all the aforementioned processes, and also other processes, have in common the characteristic that the fitter must in practice thread rods in a series of holes made in different parts which are not united until the mounting the crane (in the push-on process, for example, the fitter must thread studs into suitable holes, dug in the ends of the uprights to join them together). If the holes through which the corresponding stud passes are not perfectly aligned, this threading operation is obviously laborious and tiring, the rod having to be forced into the holes.
Le forçage de la tige pourrait donc déformer les trous jusqu'à les élargir ce qui diminuerait, en conséquence, la bonne tenue des joints sous l'effort subi.The forcing of the rod could therefore deform the holes until they widen, which would consequently reduce the good resistance of the joints under the force undergone.
Le but de la présente invention est de proposer un groupe d'assemblage mécanique qui remédie aux inconvénients constatés dans la technique connue. The object of the present invention is to provide a mechanical assembly group which overcomes the drawbacks observed in the known technique.
L'invention a ainsi pour objet un groupe pour l'assemblage d'un premier et d'un second montants superposés et appartenant respectivement à un premier et à un second éléments d'une structure métallique, ce groupe étant caractérisé par le fait qu'il comprend au moins une première et une seconde chevilles amovibles passant à travers deux logements correspondants et situés respectivement dans ces premier et second logements. Les chevilles ont une section transversale réduite à leurs extrémités sortant desdits montants. The subject of the invention is therefore a group for assembling a first and a second superimposed upright and belonging respectively to a first and to a second element of a metallic structure, this group being characterized in that it comprises at least first and second removable pegs passing through two corresponding housings and located respectively in these first and second housings. The pins have a reduced cross section at their ends exiting from said uprights.
Sur ces extrémités sont fixées, sur des faces opposées des montants et à travers des trous correspondants, deux plaques maintenues réciproquement par des moyens de jonction dévissables.On these ends are fixed, on opposite faces of the uprights and through corresponding holes, two plates held reciprocally by unscrewable joining means.
L'invention sera mieux comprise à la lecture de la description détaillée qui va suivre et à l'exa- men des dessins annexés qni représentent, à titre d'exemple non limitatif, un mode de réalisation de l'invention. The invention will be better understood on reading the detailed description which follows and on examining the appended drawings which, by way of non-limiting example, represent an embodiment of the invention.
La figure 1 montre, en perspective éclatée un groupe d'assemblage suivant la présente invention
la figure 2 montre en perspective plusieurs groupes d'assemblages, identiques à celui de la figure 1, appliqués à une grue à tour
la figure 3 est un détail agrandi en coupe selon la ligne III-III de la figure 2.Figure 1 shows, in exploded perspective an assembly group according to the present invention
Figure 2 shows in perspective several groups of assemblies, identical to that of Figure 1, applied to a tower crane
FIG. 3 is an enlarged detail in section along the line III-III in FIG. 2.
Le groupe d'assemblage représenté sur la figure 1 se compose d'un couple de chevilles égales 10, d'un couple de plaques 11, elles aussi égales, et d'un élément de jonction constitué par une vis 12 avec boulon 13 et deux rondelles 14. Chaque cheville 10 présente des portées terminales 15 de section transversale réduite par rapport à sa portion centrale 16. The assembly group shown in Figure 1 consists of a pair of equal pins 10, a couple of plates 11, also equal, and a connecting element consisting of a screw 12 with bolt 13 and two washers 14. Each dowel 10 has end bearing surfaces 15 of reduced cross section relative to its central portion 16.
Chaque plaque 11 est percée de deux trous 17 à ses extrémités, chacun de ces trous pouvant rece voir une portée 15 d'une'cheville 10, et est en outre percée d'un trou central 18 qui peut être traversé par la vis 12. Each plate 11 is pierced with two holes 17 at its ends, each of these holes being able to receive a bearing 15 of a pin 10, and is moreover pierced with a central hole 18 which can be crossed by the screw 12.
Le groupe d'assemblage décrit peut être avantageusement utilisé pour unir rigidement des éléments de colonne d'une grue à tour, comme le montre la figure 2. The assembly group described can advantageously be used to rigidly join column elements of a tower crane, as shown in FIG. 2.
SSr cette figure, sont partiellement représentés deux éléments de colonne superposés 19 et 20 d'une grue à tour de type connu. Chaque élément de colonne comprend quatre montants en forme de "L" ; les montants de l'élément de colonne inférieure 19 sont désignés par 21 et ceux de l'élément supérieur 20 par 22. In this figure, two superimposed column elements 19 and 20 of a known type tower crane are partially represented. Each column element includes four "L" shaped uprights; the amounts of the lower column element 19 are designated by 21 and those of the upper column 20 by 22.
Chaque couple de montants 21 et 22 superposés est tmi par deux groupes d'assemblage comme celui qui a été décrit, disposés sur les parois des montants. Each pair of superimposed uprights 21 and 22 is terminated by two assembly groups such as that which has been described, arranged on the walls of the uprights.
A cet effet un trou 23 est creusé dans la paroi du montant inférieur 21, à son extrémité supérieure, et dans la paroi correspondante du montant supérieur 22 sont percés, à son extrémité inférieure, deux trous 24 et 25. Les trois trous 23, 24 et 25 sont disposés de manière à être, lorsque les montants sont superposés, alignés verticalement et avec les mêmes distances interaxiales que les trois trous 17 et 18 des plaques 11. Les trous 23 et 25 sont destinés à recevoir les chevilles 10 dans leur portion centrale 16 et le trou 24 est destiné à être traversé par la vis 12. Parallèlement, sur l'autre paroi du montant 21 sont percés, à son extrémité supérieure, deux trous 26 et 27 et sur la paroi correspondante du montant 22 est percé, a son extrémité inférieure, un seul trou 28.De toute façon, les montants étant superposés, les trois trous 26, 27 et 28 s'alignent verticalement dans une disposition et dans un but identi ques à ceux qui sont indiqués pour les trous 23, 24 et 25. For this purpose a hole 23 is dug in the wall of the lower upright 21, at its upper end, and in the corresponding wall of the upper upright 22 are drilled, at its lower end, two holes 24 and 25. The three holes 23, 24 and 25 are arranged so as to be, when the uprights are superimposed, aligned vertically and with the same interaxial distances as the three holes 17 and 18 of the plates 11. The holes 23 and 25 are intended to receive the pins 10 in their central portion 16 and the hole 24 is intended to be crossed by the screw 12. In parallel, on the other wall of the upright 21 are drilled, at its upper end, two holes 26 and 27 and on the corresponding wall of the upright 22 is drilled, a its lower end, a single hole 28. Anyway, the uprights being superimposed, the three holes 26, 27 and 28 are aligned vertically in a layout and for a purpose identical to those indicated for the holes 23, 24 and 25.
Pour le montage de chaque groupe d'assemblage on procède comme il est indiqué ci-après par référence aux parois superposées, percées des trous 23, 24 et 25 (figure 1). For the assembly of each assembly group, the procedure is as indicated below with reference to the superimposed walls, pierced with holes 23, 24 and 25 (FIG. 1).
On introduit d'abord les chevilles 10 dans les deux trous 23 t 25 de façon que la portion centrale 16 soit complètement logée dans ces trous et que les deux portées 15 ressortent des parois. Sur les chevilles 15 sont ensuite montées sur des faces opposées deux plaques 11 en les enfilant par les trous 17. The pins 10 are first introduced into the two holes 23 t 25 so that the central portion 16 is completely housed in these holes and the two bearing surfaces 15 protrude from the walls. On the pins 15 are then mounted on opposite faces two plates 11 by threading them through the holes 17.
Les plaques 11 sont enfin unies réciproquement en insérant par une face, avec interposition d'une rondelle 14, la vis 12 dans les trous alignés 18 et 24 et en la serrant par la face opposée, avec interposition de l'autre rondelle 14, l'écrou 13.The plates 11 are finally reciprocally joined by inserting on one side, with the interposition of a washer 14, the screw 12 in the aligned holes 18 and 24 and tightening it by the opposite side, with the interposition of the other washer 14, l 'nut 13.
Pour unir les deux autres parois superposées des montants 21 et 22 avec l'autre groupe d'assemblage on procède d'une manière analogue. Ce dernier groupe d'assemblage est clairement montré assemblé, en coupe, à la figure 3. I1 apparaît dissymétrique par rapport à l'autre étant donné la disposition réciproque correspondante des trois trous 26, 27, 28 par rapport aux trois trous 23, 24, 25. Cette disposition dissymétrique réciproque des deux groupes de trois trous provient de motifs de compensation mécanique rendus obligatoires par le choix de plaques 11 avec trous 17 et 18 équidistants. I1 n'est pas possible en effet de creuser le trou central de chacun des groupes de trois trous exactement sur la ligne de jonction des deux montants superposés et l'on est donc contraint de rendre dissymétriques ces deux groupes. To join the two other superimposed walls of the uprights 21 and 22 with the other assembly group, the procedure is analogous. This last assembly group is clearly shown assembled, in section, in FIG. 3. It appears asymmetrical with respect to the other given the corresponding reciprocal arrangement of the three holes 26, 27, 28 with respect to the three holes 23, 24 , 25. This reciprocal asymmetrical arrangement of the two groups of three holes comes from mechanical compensation reasons made compulsory by the choice of plates 11 with holes 17 and 18 equidistant. It is not indeed possible to dig the central hole of each of the groups of three holes exactly on the junction line of the two superimposed uprights and one is therefore forced to make these two groups asymmetrical.
Les trous 23, 24, 25, 26, 27, 28 sont rendus plus profonds par des renforts 29 soudés aux montants, pour des raisons de résistance structurelle. The holes 23, 24, 25, 26, 27, 28 are made deeper by reinforcements 29 welded to the uprights, for reasons of structural strength.
Le groupe d'assemblage qui vient d'être décrit se signale surtout par deux caractéristiques qui coexistent difficilement dans les groupes d'assemblage connus jusqu'ici : il permet un assemblage facile et rapide et il relie d'une manière solide et sure les deux montants superposés et correspondants malgré les sollicitations statiques et dynamiques auxquelles ils sont soumis. The assembly group which has just been described is distinguished above all by two characteristics which hardly coexist in the assembly groups known up to now: it allows an easy and fast assembly and it connects in a solid and sure way the two overlapping and corresponding amounts despite the static and dynamic stresses to which they are subjected.
I1 est clair que le présent exemple de réalisation de l'invention n'impose aucune limite à d'éventuelles variantes et/ou adjonctions. It is clear that the present exemplary embodiment of the invention does not impose any limit on possible variants and / or additions.
En particulier le groupe d'assemblage qui vient.d'être décrit peut être appliqué à n'importe quel type de montant à profil ouvert ou fermé, à n'importe quelle structure métallique, à l'aide de modifications appropriées de forme et de dimensions, apportées aux pièces qui composent le groupe lui-même. In particular, the assembly group which has just been described can be applied to any type of upright with open or closed profile, to any metallic structure, by means of appropriate modifications of shape and dimensions, brought to the parts that make up the group itself.
Dans le cas, par exemple, de montants à profil fermé les chevilles doivent avoir une longueur telle qu'elles traversent tout le montant transversalement.In the case, for example, of uprights with closed profile, the dowels must have a length such that they cross the entire upright transversely.
En outre, si des raisons techniques l'imposent, il est possible de prévoir un groupe d'assemblage plus complexe, comprenant plus de deux chevilles et plus d'un boulon d'accouplement, avec des plaques trouées en correspondance. Ce groupe peut être assemblé d'une façon tout à fait analogue à ce qui a été dit plus haut. In addition, if technical reasons so require, it is possible to provide a more complex assembly group, comprising more than two dowels and more than one coupling bolt, with plates perforated in correspondence. This group can be assembled in a manner quite analogous to what has been said above.
Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2044282U IT8220442V0 (en) | 1982-01-12 | 1982-01-12 | JUNCTION GROUP BETWEEN ELEMENTS OF METALLIC STRUCTURES, OF CRANES IN PARTICULAR. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2519620A1 true FR2519620A1 (en) | 1983-07-18 |
| FR2519620B1 FR2519620B1 (en) | 1987-02-27 |
Family
ID=11167011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8300314A Expired FR2519620B1 (en) | 1982-01-12 | 1983-01-11 | ASSEMBLY GROUP FOR METAL STRUCTURE ELEMENTS, ESPECIALLY CRANES |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE3300252A1 (en) |
| ES (1) | ES278776Y (en) |
| FR (1) | FR2519620B1 (en) |
| IT (1) | IT8220442V0 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2787431A1 (en) * | 1998-12-21 | 2000-06-23 | Potain Sa | CONNECTION DEVICE BETWEEN PIVOT AND MATURE FOR TOWER CRANES |
| EP2767499A1 (en) | 2013-02-14 | 2014-08-20 | Manitowoc Crane Group France | Splinting device for connecting two strut members and assembly comprising two strut members and such splinting devices |
| EP2818443A1 (en) * | 2007-11-29 | 2014-12-31 | Manitowoc Crane Companies, LLC | Connection system for crane boom segments |
| US9051159B2 (en) | 2012-12-20 | 2015-06-09 | Manitowoc Crane Companies, Llc | Column connector system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3936257C2 (en) * | 1989-10-31 | 1999-04-08 | Man Ghh Logistics | Bolt connection for corner posts of a crane tower |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1703369A (en) * | 1927-08-10 | 1929-02-26 | Walter F Speakman | Sectional-derrick-leg clamp |
| US1955074A (en) * | 1930-05-31 | 1934-04-17 | Jacob C Knupp | Connecting sleeve |
| FR1046808A (en) * | 1950-08-23 | 1953-12-09 | British Hoist And Crane Compan | Transportable crane |
| FR1263311A (en) * | 1960-04-27 | 1961-06-09 | Portenseigne Ets Marcel | Improvements to tube assembly systems |
| CH449204A (en) * | 1965-11-15 | 1967-12-31 | Richier Societe Anonyme | Metal frame that can be dismantled into several elements, in particular for tower cranes |
| GB1098232A (en) * | 1964-07-03 | 1968-01-10 | British Hoist And Crane Compan | Improvements in or relating to hoists |
| FR2044346A5 (en) * | 1969-05-27 | 1971-02-19 | Ventre Lucien | |
| FR2185217A5 (en) * | 1972-05-18 | 1973-12-28 | Potain Sa | |
| FR2247417A1 (en) * | 1973-10-11 | 1975-05-09 | Liebherr Hans | Tower crane section joint - has split spring sleeve with taper bore enclosing mating bolt core |
| FR2352202A1 (en) * | 1976-05-21 | 1977-12-16 | Richier Sa | Metal tower crane mast components connecting system - comprises combined pieces forming inclined surface recess for block wedge insertion |
-
1982
- 1982-01-12 IT IT2044282U patent/IT8220442V0/en unknown
-
1983
- 1983-01-03 DE DE19833300252 patent/DE3300252A1/en active Granted
- 1983-01-11 FR FR8300314A patent/FR2519620B1/en not_active Expired
- 1983-01-11 ES ES1983278776U patent/ES278776Y/en not_active Expired
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1703369A (en) * | 1927-08-10 | 1929-02-26 | Walter F Speakman | Sectional-derrick-leg clamp |
| US1955074A (en) * | 1930-05-31 | 1934-04-17 | Jacob C Knupp | Connecting sleeve |
| FR1046808A (en) * | 1950-08-23 | 1953-12-09 | British Hoist And Crane Compan | Transportable crane |
| FR1263311A (en) * | 1960-04-27 | 1961-06-09 | Portenseigne Ets Marcel | Improvements to tube assembly systems |
| GB1098232A (en) * | 1964-07-03 | 1968-01-10 | British Hoist And Crane Compan | Improvements in or relating to hoists |
| CH449204A (en) * | 1965-11-15 | 1967-12-31 | Richier Societe Anonyme | Metal frame that can be dismantled into several elements, in particular for tower cranes |
| FR2044346A5 (en) * | 1969-05-27 | 1971-02-19 | Ventre Lucien | |
| FR2185217A5 (en) * | 1972-05-18 | 1973-12-28 | Potain Sa | |
| FR2247417A1 (en) * | 1973-10-11 | 1975-05-09 | Liebherr Hans | Tower crane section joint - has split spring sleeve with taper bore enclosing mating bolt core |
| FR2352202A1 (en) * | 1976-05-21 | 1977-12-16 | Richier Sa | Metal tower crane mast components connecting system - comprises combined pieces forming inclined surface recess for block wedge insertion |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2787431A1 (en) * | 1998-12-21 | 2000-06-23 | Potain Sa | CONNECTION DEVICE BETWEEN PIVOT AND MATURE FOR TOWER CRANES |
| EP1013601A1 (en) * | 1998-12-21 | 2000-06-28 | Potain | Connecting device between pivot and tower for a tower crane |
| 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 |
| EP2818443A1 (en) * | 2007-11-29 | 2014-12-31 | Manitowoc Crane Companies, LLC | Connection system for crane boom segments |
| US9187296B2 (en) | 2007-11-29 | 2015-11-17 | Manitowoc Crane Companies, Llc | Connection system for crane column segments |
| EP3028982A1 (en) * | 2007-11-29 | 2016-06-08 | Manitowoc Crane Companies, LLC | Connection system for crane boom segments |
| US9051159B2 (en) | 2012-12-20 | 2015-06-09 | Manitowoc Crane Companies, Llc | Column connector system |
| EP2767499A1 (en) | 2013-02-14 | 2014-08-20 | Manitowoc Crane Group France | Splinting device for connecting two strut members and assembly comprising two strut members and such splinting devices |
Also Published As
| Publication number | Publication date |
|---|---|
| ES278776U (en) | 1984-10-16 |
| DE3300252A1 (en) | 1983-11-17 |
| DE3300252C2 (en) | 1992-04-30 |
| ES278776Y (en) | 1985-04-16 |
| IT8220442V0 (en) | 1982-01-12 |
| FR2519620B1 (en) | 1987-02-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0229579B1 (en) | Tube assembly system and application of this system to a bicycle frame | |
| FR2692010A1 (en) | Connecting block and assembly for profiled bars and bar assembly by applying. | |
| FR2965199A1 (en) | WORKING FLANGE ASSEMBLY FOR TUBES COMPRISING SEVERAL PARTS. | |
| CH624728A5 (en) | ||
| FR2602203A3 (en) | IMPROVED CONNECTION FOR BICYCLE FRAME | |
| FR2680813A1 (en) | DISMANTLING ASSEMBLY DEVICE FOR METAL FRAME ELEMENTS. | |
| FR2519620A1 (en) | ASSEMBLY GROUP FOR METAL STRUCTURE ELEMENTS, ESPECIALLY CRANES | |
| EP0562949B1 (en) | Method for assembling the extremities of two elements placed in front of each other and dismountable chain link produced with such method | |
| FR2914117A1 (en) | Vertical column for metallic framing housing of e.g. IP30 modular cabinet, has reinforcement system welded on branches over length of system to locally close column, where length of system is lesser than one third of length of column | |
| EP0280621A1 (en) | Supporting and hanging system for wide span beams | |
| EP2767499A1 (en) | Splinting device for connecting two strut members and assembly comprising two strut members and such splinting devices | |
| FR2662218A1 (en) | Double stud for joining any elements whatsoever together so that they touch | |
| FR2780017A1 (en) | Tubular vehicle chassis with optimum strength and weight distribution, particularly applicable to motorcycles | |
| FR2640007A1 (en) | SYSTEM FOR QUICK ASSEMBLY OF TWO ELEMENTS BETWEEN THEM AND METHOD FOR THE PRODUCTION THEREOF | |
| EP0084008A2 (en) | Elongate concrete elements, joinable end-to-end | |
| EP0165859A1 (en) | Cross-bracing device for the legs of a truss-type mast, and mast including such a device | |
| FR2858040A1 (en) | Connection assembly for manufacturing corners of tubular structure, has screw acting on thermoplastic coating of end parts of tubular unit by transversal tightening to maintain tubular unit on connection part | |
| FR2529931A1 (en) | Prefabricated scaffolding construction element with automatic clearance compensation | |
| FR2761453A1 (en) | PART INTENDED IN PARTICULAR FOR THE FIXATION OF TWO HEATING BODIES OF A HEATING RADIATOR | |
| FR2745831A1 (en) | Assembly device for wooden frames in constructions | |
| FR2773568A1 (en) | Assembly bracket for frame members | |
| CA2033160A1 (en) | Light portable bridge for crossing gaps | |
| FR2576222A1 (en) | CONICAL MILLING TOOL OF SOLDERED CONSTRUCTION | |
| FR2558864A1 (en) | MOLDED STEEL ASSEMBLY PART FOR THE FORMATION OF STRUCTURAL BUILDING NODES | |
| BE876465A (en) | ASSEMBLY KNOT FOR THE CONSTRUCTION OF TUBULAR FRAMES |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |