EP0855361B1 - Teleskopmast für einen Turmkran - Google Patents
Teleskopmast für einen Turmkran Download PDFInfo
- Publication number
- EP0855361B1 EP0855361B1 EP19970420237 EP97420237A EP0855361B1 EP 0855361 B1 EP0855361 B1 EP 0855361B1 EP 19970420237 EP19970420237 EP 19970420237 EP 97420237 A EP97420237 A EP 97420237A EP 0855361 B1 EP0855361 B1 EP 0855361B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mast
- faces
- elements
- crane
- lateral
- 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
Links
Images
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
- B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
- B66C23/346—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes with locking devices
-
- 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
- the present invention relates to cranes with tower, and more particularly to a mast structure telescopic type for tower crane.
- the invention relates to mast cranes telescopic, whose mast consists of two or three mast elements, or even more numerous elements, mounted sliding inside each other so that form a telescopic, extendable structure or retractable vertically.
- the elements of a telescopic crane mast turn must ensure the transmission of forces during of the crane work, as well as the continuity of the transmission of forces during telescoping; these latest efforts include normal efforts, shear forces, bending moments and moments of torsion. Guidance and centering of the mast elements with respect to the others, as well as the locking of the mast elements with each other in the working position.
- the mast elements of cranes in turn are made of wire mesh.
- Telescopic masts also appeared, the elements have a tubular or box configuration, with solid side faces.
- telescopic masts whose elements consist of horizontal section boxes square or rectangular, so with four side faces, the mast elements being guided relative to the others by means of skates or rollers.
- French patent application N ° 2404754 concerns a tool holder or some kind of antenna telescopic, with only two parts telescoping. Such a structure can be compared to a beam embedded at its base and subjected to stresses significant bending, due to wind, and to low compression, since it is not intended for lifting of loads. This document can therefore be compared to previous, so it doesn't solve the problems specific to the present invention.
- the telescopic structure of French document N ° 2404754 has tubular elements of horizontal section circular, with no relative blocking in rotation, and is therefore not suitable for taking up significant torsional forces applied to the masts of tower cranes.
- the particular technical solution of the the aforementioned French document is obviously not applicable to a mast comprising more than two elements telescoping.
- the present invention aims to improve the telescopic masts for a tower crane composed of mast elements in box, by providing a mast whose elements have an optimized section, so as to improve it mechanical resistance, in particular by reducing the setting in the wind, while ensuring good guidance of the elements of mast relative to each other, and especially by being capable of resisting torsional forces and compression to which such a structure is subjected, what whatever the number of its elements.
- the invention has for object a telescopic mast for crane, composed of several mast elements slidably mounted one at a time the interior of the others and each having a structure in a box, this mast being characterized in that the box mast elements each have a section polygonal in shape with more than four sides, determined by lateral faces parallel and / or perpendicular to the front-rear direction of the crane, and side faces intermediate, oblique to this direction front-rear, said mast comprising means for guiding the mast elements relative to each other others, located on oblique lateral faces of these mast elements, and automatic locking means said mast elements with each other, in predetermined relative positions, which are arranged on lateral faces parallel and / or perpendicular to the front-rear direction of the crane.
- the elements of box mast each has a shaped section dodecagonal, determined by two opposite side faces parallel to the front-rear direction of the crane, a front side face and rear side face perpendicular to the front-rear direction of the crane, and eight oblique faces, divided into four pairs of adjacent oblique faces connecting, two by two, the faces previous side.
- the dodecagonal section is close to the section of optimal resistance which is that of a section tube round, and a mast which has such a section dodecagonal has, with identical resistance, a reduced size and weight compared to a mast square or rectangular section. Resistance to face warping is also improved, which removes the need for stiffeners.
- the mast structure object of the invention also has the advantage of easier manufacturing and more economical, either by cold bending a sheet, or by assembling sheets corresponding to the various faces.
- the sufficiently numerous side faces of the elements mast of polygonal section allow to dissociate well the guide means and the locking means.
- the location of the guide means on the oblique faces provides self-centered guidance in the plane vertical center of the crane, with clearances, in preventing any rotation of an interior mast element by relative to an external mast element, while the mast interior is subjected to sharp forces.
- all of these guide shoes are constituted by a sliding plate covering substantially the entire width of the oblique face corresponding, to reduce the contact pressure to a minimum value, the plate being covered with a synthetic coating reducing the coefficient of friction, and also removing the need for a lubrication.
- the side games are canceled by the contact of the skates on the corresponding oblique faces, and the front clearances and rear are caught by "wedge phenomenon", which allows self-centered guidance.
- the particular means of guidance and locking allow to dissociate the functions of embedding and guidance which are subjected to efforts of a nature different, and thereby optimize the achievement of each of these functions, while allowing the transition from one to the other.
- the structure of these means makes visible, from the ground, the maneuvers of locking and unlocking.
- the crane still has a boom dispenser 10, foldable, which is linked to the top of the mast 6 along a hinge axis 11, and which is held in a horizontal position by a device retainer 12, connected to the rear part of the chassis turning 2.
- the present invention is more concerned particularly to the structure of the telescopic mast 6, the elements of which are shown in more detail in Figures 2 and following.
- an interior mast element and an external mast element which in the example illustrated are respectively the second mast element 8 and the first mast element 7 (but which could be also the third and second elements).
- first four guide shoes 26, 27, 28 and 29 are provided at the base of the inner mast element 8. These guide shoes 26, 27, 28 and 29 are fixed, respectively, on the four oblique faces 18, 19, 20 and 21 of the inner mast element 8, outside of this item 8.
- Each of the guide pads 26 to 33 has, as shown in Figures 3 and 4, a width substantially equal to that of the oblique face 18, 19, 20 or 21 next to which it is located, and with which he is called to cooperate.
- Figure 2 also illustrates, at A and B, the support zones between the pads of an element of mast and the corresponding faces of the other element of mast.
- the inner mast element 8 can be telescoped, until reaching with respect to the external mast element 7 a predetermined vertical position, in which it is automatically locked with this external element 7.
- locking means are provided, shown mainly in Figures 5, 6 and 7.
- These means include a blocking assembly upper, composed of two mounting pads 34 and 35 and two recessed housings 36 and 37. Both mounting pads 34 and 35 are arranged outside of the two lateral faces, respectively straight 16 and left 17, of the inner mast element 8; these skates 34 and 35 are equipped with engagement and clearance ramps 38 and 39.
- the two mounting housings 36 and 37 are arranged inside the side faces, respectively right 16 and left 17, of the outer mast element 7, at the top of this element 7.
- the locking means also include a lower locking assembly, consisting of two others mounting pads 40 and 41 and two other housings 42 and 43.
- the two 40 mounting pads and 41 are arranged towards the base of the mast element inside 8, outside the two lateral faces, respectively right 16 and left 17, of this element 8. These pads 40 and 41 are also provided with ramps of engagement and clearance 44 and 45.
- the two housings 42 and 43 are arranged inside the corresponding faces 16 and 17 of the mast element exterior 7.
- the upper blocking assembly is completed by two symmetrical locks 46 and 47, pivotally mounted at top of the outer mast element 7, around an axis of horizontal pivot 48 perpendicular to the median plane 13 and close to the upper edge of the rear face 15 of this item 7.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Claims (5)
- Teleskopmast (6) für einen Turmdrehkran, zusammengesetzt aus mehreren Mastelementen (7, 8, 9), die ineinandergleitend montiert sind und von denen jedes eine Kastenstruktur aufweist, dadurch gekennzeichnet, dass jedes der kastenförmigen Mastelemente (7, 8, 9) einen Querschnitt in polygonaler Form mit mehr als vier Seiten besitzt, der durch die Seitenflächen (14 bis 17) gebildet ist, die parallel und/oder senkrecht zur Vorwärts-Rückwärts-Richtung (13) des Krans verlaufen, und dazwischen liegende Seitenflächen (18 bis 25), die bezüglich dieser Vorwärts-Rückwärts-Richtung (13) schräg verlaufen, wobei dieser Teleskopmast (6) Führungsmittel (26 bis 33) für die Mastelemente (7, 8, 9) untereinander umfasst, die sich an den schrägen Seitenflächen (18 bis 21) dieser Mastelemente (7, 8, 9) befinden, und Mittel (34 bis 38) zur automatischen Verriegelung dieser Mastelemente (7, 8, 9) miteinander in vorherbestimmten, aufeinander bezogenen Positionen umfasst, Mittel, welche an den Seitenflächen (16, 17) angeordnet sind, die parallel und/oder senkrecht zur Vorwärts-Rückwärts-Richtung (13) des Krans liegen.
- Teleskopmast für einen Turmdrehkran nach Anspruch 1, dadurch gekennzeichnet, dass jedes der kastenförmigen Mastelemente (7, 8, 9) einen zwölfeckigen Querschnitt besitzt, der von zwei einander gegenüberliegenden Seitenflächen (16, 17) gebildet ist, die zur Vorwärts-Rückwärts-Richtung (13) des Krans parallel liegen, von einer vorderen (14) und einer hinteren (15) Seitenfläche, welche zur Vorwärts-Rückwärts-Richtung (13) des Krans senkrecht stehen, und von acht Schräg-flächen (18 bis 25), die zu vier Paaren nebeneinander liegender Schrägflächen aufgeteilt sind, die, jeweils zwei und zwei, die vorhergehenden Seitenflächen (14 bis 17) verbinden.
- Teleskopmast für einen Turmdrehkran nach Anspruch 2, dadurch gekennzeichnet, dass die Führungsmittel für ein inneres Mastelement und ein äußeres Mast-element, die einander zugeordnet sind, in Kombination umfassen:vier Führungskufen (26 bis 29), die sich an der Basis der inneren Mastelements befinden und außen an den Schrägflächen (18 bis 21) dieses Elements befestigt sind, die den vorderen (14) und hinteren (15) Flächen benachbart sind, undvier andere Führungskufen (30 bis 33), die sich an der Spitze des äußeren Mastelements befinden und innen an den Schrägflächen (18 bis 21) dieses Elements befestigt sind, die den vorderen (14) und hinteren (15) Flächen benachbart sind.
- Teleskopmast für einen Turmdrehkran nach Anspruch 3, dadurch gekennzeichnet, dass die Führungskufen (26 bis 33) gebildet sind durch eine Gleitplatine, die im wesentlichen die gesamte Breite der entsprechenden Schrägfläche (18 bis 21) bedeckt, wobei die Platine mit einem Belag aus Kunststoff überzogen ist, der den Reibungskoeffizienten mindert.
- Teleskopmast für einen Turmdrehkran nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Mittel, die die Mastelemente (7, 8, 9) automatisch miteinander verriegeln, für ein inneres Mastelement und ein äußeres Mastelement, die einander zugeordnet sind, in Kombination umfassen:eine Teilegruppe für die obere Verriegelung, die besteht aus zwei seitlichen Aufnahme-Gleitkufen (34, 35), die außen an den Seitenflächen (16, 17) des inneren Mastelements, die parallel zur Vorwärts-Rückwärts-Richtung (13) des Krans liegen, angeordnet sind, und aus zwei Aufnahme-Gehäusen (36, 37), die innen an den entsprechenden Flächen (16, 17) des äußeren Mastelements an der Spitze des letzteren angeordnet sind,eine Teilegruppe für die untere Verriegelung, die besteht aus zwei anderen seitlichen Aufnahme-Gleitkufen (40, 41), die außen an den Seitenflächen (16, 17) des inneren Mastelements, die parallel zur Vorwärts-Rückwärts-Richtung (13) des Krans liegen, an der Basis dieses Elements angeordnet sind, und aus zwei Aufnahme-Gehäusen (42, 43), die innen an den entsprechenden Flächen (16, 17) des äußeren Elements angeordnet sind,und aus zwei symmetrischen klappbaren Riegeln (46, 47), die (bei 48) an der Spitze des äußeren Mastelements angelenkt sind und automatisch beim Ausfahren der Mastelemente (46, 47) betätigt werden, wobei die Riegel (46, 47) mit den Aufnahme-Gleitkufen (34, 35) und den Aufnahme-Gehäusen (36, 37) der Teilegruppe zur oberen Verriegelung zusammenarbeiten, indem sie, wenn sie einmal geklappt sind, jeweils zwischen die zwei entsprechenden Gleitkufen (34, 35) und die Gehäuse (36, 37) eingreifen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9616159 | 1996-12-23 | ||
FR9616159A FR2757497B1 (fr) | 1996-12-23 | 1996-12-23 | Mature telescopique pour grue a tour |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0855361A1 EP0855361A1 (de) | 1998-07-29 |
EP0855361B1 true EP0855361B1 (de) | 2002-08-14 |
Family
ID=9499256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970420237 Expired - Lifetime EP0855361B1 (de) | 1996-12-23 | 1997-12-19 | Teleskopmast für einen Turmkran |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0855361B1 (de) |
JP (1) | JPH10218562A (de) |
BR (1) | BR9706416A (de) |
DE (1) | DE69714696T2 (de) |
ES (1) | ES2180910T3 (de) |
FR (1) | FR2757497B1 (de) |
RU (1) | RU2189935C2 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2792627B1 (fr) * | 1999-04-23 | 2001-06-01 | Potain Sa | Grue avec fleche a fonctions multiples |
DE102004014689B4 (de) * | 2004-03-25 | 2012-05-16 | Blowup Media Gmbh | Trägergerüst für eine Informations- und/oder Werbefläche |
DE202013000277U1 (de) * | 2013-01-11 | 2014-04-14 | Liebherr-Werk Biberach Gmbh | Turmdrehkran |
CN103241663A (zh) * | 2013-05-07 | 2013-08-14 | 三一帕尔菲格特种车辆装备有限公司 | 一种起重机、起重机的伸缩臂及起重机的节臂 |
ES2606786B1 (es) | 2015-09-23 | 2018-01-31 | Esteyco S.A.P. | Dispositivo de guiado para montaje de torres eólicas |
FR3046150B1 (fr) * | 2015-12-23 | 2017-12-29 | Manitowoc Crane Group France | Grue a tour comprenant un mat telescopique |
FR3046151B1 (fr) | 2015-12-23 | 2018-01-05 | Manitowoc Crane Group France | Mat telescopique et grue a tour a depliage et repliage automatiques comprenant un tel mat telescopique |
FR3046149B1 (fr) | 2015-12-23 | 2017-12-29 | Manitowoc Crane Group France | Grue a tour a depliage et repliage automatiques et comprenant un mat et une fleche decalee par rapport au mat |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4038794A (en) * | 1975-10-28 | 1977-08-02 | The Warner & Swasey Company | Boom assembly |
DE2744293C2 (de) * | 1977-10-01 | 1982-05-19 | Vereinigte Flugtechnische Werke Gmbh, 2800 Bremen | Höhenverstellbarer Geräteträger |
US4459786A (en) * | 1981-10-27 | 1984-07-17 | Ro Corporation | Longitudinally bowed transversely polygonal boom for cranes and the like |
DE3528996C1 (de) * | 1985-08-13 | 1986-12-18 | Mannesmann AG, 4000 Düsseldorf | Teleskopsaeule |
DE3628782A1 (de) * | 1986-08-25 | 1988-03-03 | Hans H Heller | Kamerakranwagen fuer film- oder fernsehaufnahmen |
CH675762A5 (de) * | 1988-10-03 | 1990-10-31 | Peter Huerlimann |
-
1996
- 1996-12-23 FR FR9616159A patent/FR2757497B1/fr not_active Expired - Lifetime
-
1997
- 1997-12-19 DE DE1997614696 patent/DE69714696T2/de not_active Expired - Lifetime
- 1997-12-19 EP EP19970420237 patent/EP0855361B1/de not_active Expired - Lifetime
- 1997-12-19 BR BR9706416A patent/BR9706416A/pt not_active Application Discontinuation
- 1997-12-19 ES ES97420237T patent/ES2180910T3/es not_active Expired - Lifetime
- 1997-12-22 RU RU97122166A patent/RU2189935C2/ru not_active IP Right Cessation
- 1997-12-24 JP JP37013197A patent/JPH10218562A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE69714696D1 (de) | 2002-09-19 |
ES2180910T3 (es) | 2003-02-16 |
EP0855361A1 (de) | 1998-07-29 |
FR2757497A1 (fr) | 1998-06-26 |
FR2757497B1 (fr) | 1999-02-12 |
BR9706416A (pt) | 1999-06-29 |
DE69714696T2 (de) | 2003-05-08 |
RU2189935C2 (ru) | 2002-09-27 |
JPH10218562A (ja) | 1998-08-18 |
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