EP3184481A1 - Tower crane with automatic folding and unfolding, and comprising a mast and a boom offset relative to the mast - Google Patents
Tower crane with automatic folding and unfolding, and comprising a mast and a boom offset relative to the mast Download PDFInfo
- Publication number
- EP3184481A1 EP3184481A1 EP16201221.5A EP16201221A EP3184481A1 EP 3184481 A1 EP3184481 A1 EP 3184481A1 EP 16201221 A EP16201221 A EP 16201221A EP 3184481 A1 EP3184481 A1 EP 3184481A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mast
- boom
- tower crane
- section
- arrow
- 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.)
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- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
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
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/68—Jibs foldable or otherwise adjustable in configuration
-
- 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
- B66C23/60—Derricks
-
- 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
- B66C23/06—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 with jibs mounted for jibbing or luffing movements
-
- 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
-
- 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
- B66C23/344—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes adapted for transport purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- 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
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/702—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic with a jib extension boom
-
- 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
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
Definitions
- the present invention relates to an automatic folding and folding tower crane.
- the present invention is applicable to the field of tower cranes having a mast and an arrow, for example dispensing boom cranes or luffing boom cranes.
- EP0855361A1 discloses an automatic folding and unfolding tower crane comprising a mast and boom movable between a working configuration (vertical mast and horizontal boom) and a transport configuration (mast and boom folded).
- the mast has several mast sections and a second mast section and the boom has several boom sections.
- a first mast section is connected to the first boom section in rotation about an axis of articulation orthogonal to the direction of the mast and the direction of the arrow when the tower crane is in working configuration.
- the present invention is intended in particular to solve, in whole or in part, the problems mentioned above.
- the hinge axis extends in an upper region of the first boom section.
- the tower crane can be stored in a standardized cargo container (40 feet long, approximately 12.20 m), while offering a height in working configuration superior to a self-supporting tower crane of equivalent capacity.
- the height gain of a tower crane according to the invention in working configuration can be 5 m, ie about + 20%.
- the offset (or offset) of the boom relative to the mast and the high position of the hinge pin allow the tower crane to have optimal dimensions in transport configuration, without changing the maximum width of the convoy determined by the width of the axle of the vehicle. Indeed, this shift allows to superimpose two rows of folded boom sections.
- the direction of arrow is offset from the mast direction parallel to the hinge axis, the direction of arrow and the direction of mast are disjoint, so non-secant.
- a lateral portion of the first boom section extends along a lateral portion of the first mast section.
- the mast direction can form an angle between 0 degrees and 3 degrees with a vertical direction.
- the boom direction can form an angle between 0 degrees and 45 degrees with a horizontal direction.
- the boom direction is orthogonal to the mast direction when the tower crane is in the working configuration, and the boom direction is substantially parallel to the mast direction when the tower crane is in the transport configuration.
- the first mast section has a cross section of polygonal shape to at least eight sides
- the second mast section has a cross section of polygonal shape to at least eight sides.
- the first mast section has a generally prismatic shape composed of flat sheets
- the second mast section has a generally prismatic shape composed of flat sheets.
- the first boom section comprises at least: i) an upper chord defining the upper limit and ii) a lower chord defining the lower limit.
- the first boom section comprises two upper chords and two lower chords arranged so that the first boom section has a generally trapezoidal cross section transversely to the direction of arrow.
- the boom foot has four chords.
- the jib foot has a very high resistance to lateral forces, while reducing the space required for the tubes forming the upper chords.
- the first boom section comprises, over most of its length, a single upper chord and two lower chords arranged so that the first boom section has generally the shape of a triangle in cross section to the direction of arrow, with nevertheless a zone with trapezoidal section to house the bearings of articulation between boom and mast.
- the first boom section has a box structure and / or the second boom section has a box structure.
- the tower crane further comprises a hinge device configured to bind the first mast section to the first boom section at least in rotation about the hinge axis.
- the hinge device may comprise rotary bearings.
- the hinge device is dimensioned, in particular in stiffness, to mechanically resist the moments generated on the mast by the position of the boom in work.
- the first boom section comprises a boom articulation portion
- the first mast section comprises a mast articulation portion
- the boom articulation portion and the mast articulation portion being connected by the articulation device.
- the mast hinge portion is located near the upper limit of the mast when the tower crane is in working configuration. According to one variant, the distance between the mast articulation portion and the upper limit of the mast is less than 5% of the height of the first mast section, measured parallel to the mast direction when the tower crane is in the configuration of the mast. job.
- the boom articulation portion is located near the rear end of the boom when the tower crane is in working configuration. According to one variant, the distance between the boom articulation portion (hinge pin) and the rear end of the boom (end of the punch) is less than 20% of the length of the first boom section, measured parallel to arrow direction when the tower crane is in working configuration.
- the direction of the arrow is offset with respect to the mast direction so that an offset distance between i) a lateral portion of the arrow facing the mast and ii) a lateral portion of the mast facing towards the mast.
- the arrow measured parallel to the axis of articulation, is greater than 200 mm, preferably greater than 250 mm.
- the width of the boom does not depend on the width of the mast, unlike tower cranes of the state of the art.
- the boom may have a first enlarged boom section, which increases its mechanical resistance to the forces that the boom transmits to the mast.
- an offset distance between the direction of arrow and the mast direction, measured parallel to the axis of articulation is between 900 mm and 1100 mm.
- the first mast section and the second mast section are configured so that the first mast section can slide in the second mast section.
- the mast comprises at least one telescopic part.
- the first mast section extends substantially above the second mast section; in configuration transport, the first mast section extends substantially in the second mast section.
- such a telescopic mast not only allows to have a very compact tower crane in transport configuration and a very high working height, but also to raise the boom at the same time as the telescoping of the mast.
- said height of the first boom section is greater than the width of the first boom section, measured parallel to the hinge axis.
- the cross section of the arrow is rectangular or trapezoidal.
- the long side of this cross section is vertical.
- the height of the first boom section is greater than 800 mm, for example approximately equal to 1000 mm.
- such a height allows the first boom section to mechanically resist the efforts that the arrow transmits to the mast.
- the height of the first boom section is greater than the height of the second boom section.
- the boom is devoid of vertical punch to support the first boom section, which simplifies the mounting of the tower crane.
- the first boom section is "topless” because the tower crane has no punch located above the mast. Thanks to its trapezoidal shape, the structure the first boom section is sufficient to mechanically withstand the forces generated by the dead weight and the load suspended from the boom.
- the retaining tie is composed of bars articulated together.
- the lifting angle of the boom is managed before unfolding by an operator manually positioning a lock acting as a stop between a male tie rod and a female tie rod that perform the retaining function.
- the retaining tie may comprise a portion of cable.
- the retaining cylinder replaces a portion of the retaining tie.
- the holding cylinder can be hydraulic.
- such a holding cylinder allows the construction of economical tower cranes, because the holding cylinder takes the moment forward, which allows to have a telescoping mechanism of low capacity, which is dimensioned only for telescope dead weight (mast and empty boom) but not to raise the boom.
- the boom is mechanically connected to the base exclusively by the telescopic mast, the width of the cross section of the telescopic mast being less than 70% of the length of the cross section of the telescopic mast.
- the tower crane comprises a winch and a hanger arranged to transmit a lifting effort to the boom.
- This winch and haft then replace part of the retaining tie.
- the tower crane further comprises an intermediate punch arranged above the junction between the first and second boom sections.
- an intermediate punch reduces the dead weight of the second boom section, which reduces the moments induced on the mast by the offset position of the boom.
- the punch comprises a guiding element which is configured to guide the retaining tie, the element of guide being located opposite the direction of arrow with respect to the mast direction.
- the guide element and the direction of arrow are located on both sides of the mast direction.
- the punch extends in a direction oblique to the direction of arrow, which allows the punch to effectively transmit the vertical forces of the boom to the mast.
- a distance between the punch guide element and the mast direction, measured parallel to the axis of articulation, is between 75 mm and 150 mm.
- such a distance allows the retaining tie to effectively transmit the forces of the boom to the mast without having a significant angle between the direction of the retaining tie rod and the mast direction for each angle of work, which avoids generating efforts horizontal parasites.
- the retaining tie extends substantially from the opposite side to the direction of arrow relative to the direction of mast
- the tower crane further comprising an unfolding ram configured to unfold the mast, to place the mast and the boom in working configuration, the unfolding ram being arranged on the same side of the mast direction as the first section of the mast. arrow.
- the retaining tie and the unfolding ram extend on both sides of the mast direction, since the retaining tie extends on one side of the direction of arrow and the actuator unfolding extends on the other side of the arrow direction.
- the retaining tie restricts the lateral overhang effect of the boom on the mast, because the retaining tie is shifted to the side opposite to the direction of arrow.
- the unfolding cylinder is located on the side of the boom, the unfolding cylinder is close to the overall center of gravity of the masses to be raised. Since the tie rod and the unfolding ram are located on opposite sides, the tower crane is particularly compact in transport configuration.
- the punch and a lower portion of the first boom section are rotatably connected about an axis of rotation which is parallel to the hinge axis, the tower crane further comprising connecting rods and a Cardan-type joint arranged to connect the punch to an upper portion of the first boom section, the rods being hinged together by pivoting connections and the Cardan-type joint.
- the punch on which the retaining tie rod is attached, can be folded into a storage position, in which the punch extends both opposite the first boom section and opposite the first mast section, which is particularly compact.
- the Cardan type joint and the axis of rotation allow to fold the punch according to disjoint pivot axes.
- the tower crane further comprises a lifting cable and a plurality of pulleys configured to guide the lifting cable between the first mast section and the first boom section, the pulley shafts being non-parallel, the pulleys being arranged so that two consecutive pulleys along the lifting cable have two collinear tangential directions.
- the paths of two consecutive pulleys are aligned.
- the hoisting rope will have a high resistance to wear and fatigue, because the pulley paths are aligned in pairs, eliminating any angle of deflection of the hoisting rope between two consecutive pulleys.
- the pulleys transmit the movement of the hoisting rope extending from a hoist winch mounted on the frame or to the foot of the mast to a carriage mounted on the boom.
- the first and second boom sections are superimposed and arranged next to the mast.
- the tower crane comprises a third boom section which is mechanically connected to the second boom section and which is superimposed on the first and second boom sections when the tower crane is in the transport configuration.
- the mast direction Z2 can form an angle between 0 degrees and 3 degrees with a vertical direction.
- the direction of arrow X4 can form an angle between 0 degrees and 45 degrees with a horizontal direction.
- the mast 2 has a first mast section 2.1 and a second mast section 2.2.
- the first mast section 2.1 and the second mast section 2.2 extend substantially in the mast direction Z2 when the tower crane 1 is in working configuration.
- the first mast section 2.1 has a cross section of polygonal shape with eight sides.
- the second mast section 2.2 has a polygonal cross section with eight sides.
- the first mast section 2.1 has a generally prismatic shape composed of flat sheets.
- the second mast section 2.2 has a generally prismatic shape composed of flat sheets.
- the first mast section 2.1 and the second mast section 2.2 are configured so that the first mast section 2.1 can slide in the second mast section 2.2, during telescoping phases to unfold and fold the tower crane 1.
- the mast 2 thus comprises here a telescopic part, composed of the first 2.1 and second 2.2 mast sections.
- the first mast section 2.1 extends above the second mast section 2.2.
- transport configuration figure 3
- the tower crane 1 is stored in a container 50
- the first mast section 2.1 extends in the second mast section 2.2.
- the arrow 4 has a first boom section 4.1, a second boom section 4.2 and a third boom section 4.3.
- the first boom section 4.1, the second boom section 4.2 and the third boom section 4.3 extend substantially in the direction of arrow X4 when the tower crane 1 is in working configuration.
- the first mast section 2.1 is connected to the first boom section 4.1 in rotation about a hinge axis Y24.
- the hinge axis Y24 extends orthogonally to the mast direction Z2 and to the arrow direction X4 when the tower crane 1 is in the working configuration and when the tower crane 1 is in the transport configuration.
- the first boom section 4.1 has an upper limit 4.11 and a lower limit 4.12.
- the upper limit 4.11 and the lower limit 4.12 define a height H4.1 of the first section 4.1.
- the height H4.1 is measured orthogonal to the direction of arrow X4 when the tower crane 1 is in working configuration.
- the height H4.1 of the first boom section 4.1 is greater than the width W4.1 of the first boom section 4.1, measured parallel to the hinge axis Y24.
- the cross section of the arrow 4 is here trapezoidal.
- the height H4.1 of the first boom section 4.1 is here approximately equal to 1000 mm.
- the height H4.1 of the first boom section 4.1 is greater than the height of the second boom section 4.2 and the height of the third boom section 4.3.
- the first boom section 4.1 comprises i) two upper chords defining the upper limit 4.11 and ii) two lower chords defining the lower limit 4.12.
- Each upper chord and each lower chord generally has a prismatic shape.
- the two upper chords and the two lower chords of the first boom section 4.1 are arranged so that the first boom section 4.1 has a trapezoidal cross section transverse to the direction of arrow X4.
- the tower crane 1 further comprises a hinge device 3 which is configured to connect in rotation the first mast section 2.1 and the first boom section 4.1.
- the hinge device 3 comprises rotary bearings.
- the hinge device 3 is dimensioned, in stresses and deformations, to mechanically resist the moments generated on the mast 2 by the position of the arrow 4 in work.
- the first boom section 4.1 comprises a boom articulation portion 4.5.
- the first mast section 2.1 comprises a mast articulation portion 2.5.
- the articulation device 3 mechanically connects the boom articulation portion 4.5 and the mast articulation portion 2.5.
- the mast hinge portion 2.5 is located near the upper limit 2.11 of the mast 2 when the tower crane 1 is in the working configuration ( Figures 1 and 2 ).
- the distance between the mast articulation portion 2.5 and the upper limit of the mast 2.11 is here less than 5% of the height H2.1 of the first mast section 2.1, measured parallel to the mast direction Z2 when the tower crane 1 is in working configuration.
- the boom articulation portion 4.5 is located near the rear end of the boom 4 when the tower crane 1 is in working configuration.
- the distance between the boom articulation portion 4.5 and the rear end of the boom 4 is less than 20% of the length of the first boom section 4.1, measured parallel to the boom direction X4 when the tower crane 1 is in working configuration.
- the direction of arrow X4 is offset from the mast direction Z2 parallel to the hinge axis Y24.
- the direction of arrow X4 and the direction of mast Z2 are disjoint, thus non-secant.
- a lateral portion 4.10 of the first boom section 4.1 extends along a lateral portion 2.10 of the first mast section 2.1.
- an offset distance D24.1 between i) the lateral portion 4.10 turned towards the mast 2 and ii) the lateral portion 2.10 turned towards the arrow 4, measured parallel to the hinge axis Y24, is approximately equal to 250 mm.
- An offset distance D24.2 between the direction of arrow X4 and the mast direction Z2, measured parallel to the hinge axis Y24, is here about 900 mm.
- a distance D4.24 between the hinge axis Y24 and the lower limit 4.12, measured parallel to the mast direction Z2 as shown in FIG. figure 6 is here about equal to 90% of said height H4.1 of the first boom section 4.1.
- the hinge axis Y24 extends in an upper region 4.16 of the first boom section 4.1.
- the tower crane 1 further comprises a hoisting rope 22 and a plurality of pulleys 24 configured to guide the hoisting rope 22 between the first mast section 2.1 and the first boom section 4.1.
- the axes of the pulleys 24 are not parallel.
- the pulleys 24 are arranged so that two consecutive pulleys 24 along the lifting cable 22 have two tangential directions which are collinear. Thus the paths of two consecutive pulleys are aligned, which gives the lifting cable 22 a high resistance to wear and fatigue, because the pulley paths are two by two aligned.
- the tower crane 1 further comprises a frame 8, a retaining tie 12 and a force transmission member which is arranged to transmit forces from the boom 4 to the holding tie 12 and which is formed here by a punch 14.
- the frame 8 is configured to support the mast 2 and the arrow 4 when the tower crane 1 is in working configuration.
- the chassis 8 receives a counterweight 10 when the tower crane 1 is in working configuration.
- the chassis 8 is here composed of a rotating part 8.1, a fixed part 8.2 and an orientation ring 8.3 which articulates the rotating part 8.1 with respect to the fixed part 8.2.
- the retaining tie 12 connects the rear end of the arrow 4 to the rear end of the rotating part 8.1.
- the holding tie 12 extends substantially parallel to the mast 2 when the tower crane 1 is in position. work configuration.
- the retaining tie 12 is here composed of several articulated bars some of which are telescopic.
- the force transmission member consists only of the punch 14. As shown by the Figures 7 and 8 the punch 14 extends obliquely with respect to the direction of arrow X4.
- the punch 14 comprises a guiding element 14.1 configured to guide the holding tie 12 at the rear end of the arrow 4.
- the arrow 4 is devoid of a vertical punch above the arrow 4 to support the first section of the arrow 4.1, which simplifies the assembly of the tower crane.
- the guide member 14.1 is located on the opposite side to the arrow direction X4 with respect to the mast direction Z2.
- the guide member 14.1 and the direction of arrow X4 are located on both sides of the mast direction Z2.
- a distance D2.14 between the guide element 14.1 of the punch 14 and the mast direction Z2 is here approximately equal to 120 mm, measured parallel to the hinge axis Y24.
- the tower crane 1 comprises an intermediate punch 17, which is partially visible on the Figures 5 and 6 .
- the intermediate punch 17 is arranged above the junction between the first 2.1 and second 2.2 boom sections.
- the tower crane 1 further comprises an unfolding ram 16 configured to unfold the mast 2, in order to place the mast 2 in working configuration.
- the arrow 4 is set to working configuration by telescoping the mast 4.
- the unfolding ram 16 is arranged on the same side of the mast direction Z2 as the first boom section 4.1.
- the holding tie 12 extends substantially on the opposite side to the direction of arrow X4 with respect to the mast direction Z2.
- the retaining tie 12 and the unfolding ram 16 extend on both sides of the mast direction Z2.
- the retaining tie 12 can limit the lateral overhang effect of the arrow 4 on the mast 2 in working configuration and the unfolding ram 16 is located on the side of the arrow 4, so near the center overall gravity of the masses to be raised.
- the punch 14 and a lower portion 4.15 of the first boom portion 4.1 are rotatably connected about an axis of rotation Y4.15.
- the axis of rotation Y4.15 is here parallel to the hinge axis Y24.
- the tower crane 1 further comprises connecting rods 18 and a Cardan type joint 20 which is arranged to connect the punch 14 to an upper portion 4.16 of the first boom section 4.1.
- the connecting rods 18 are hinged together by pivoting connections and by the Cardan-type joint 20.
- the connecting rods 18 and the cardan-type joint 20 make it possible to unfold or fold the punch 14 from or to a storage position.
- the punch 14 In the storage position, the punch 14 extends both opposite the first boom section 4.1 and facing the first mast section 2.1.
- the cardan type joint 20 and the rotation axis Y4.15 make it possible to fold the punch 14 when the mast 2 and the boom 4 are folded in the transport configuration.
- the Cardan type joint 20 comprises several disjoint pivot axes, including two orthogonal pivot axes X21 and Z22, visible to the figure 5 .
- the mast 2 has a third mast section 2.3 arranged to mechanically connect the second mast section 2.2 to the chassis 8.
- the third mast section 2.3 here has an octagonal cross section which has a generally prismatic shape and which is composed of flat sheets .
- the first 4.1, the second 4.2 and the third 4.3 boom sections are superimposed and arranged next to the mast 2, which makes the transport configuration particularly compact.
- the second 4.2 and third 4.3 boom sections are nested and then superimposed on the first boom section 4.1.
- the first 4.1, the second 4.2 and the third 4.3 boom sections can be superimposed, in particular because the arrow 4 is offset or offset laterally with respect to the mast 2 and since the hinge axis Y24 is placed at the top of the first section of arrow 4.1.
- the first mast section 2.1 is inserted in the second mast section 2.2, and the first 2.1 and second 2.2 mast sections are superimposed on the third mast section 2.3.
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- Mechanical Engineering (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Jib Cranes (AREA)
Abstract
Cette grue à tour comprend un mât et une flèche mobiles entre une configuration de travail et une configuration de transport. Le mât a un premier (2.1) et un deuxième tronçon de mât. La flèche a un premier (4.1) et un deuxième tronçon de flèche. Le premier tronçon de flèche (4.1) a une limite supérieure (4.11) et une limite inférieure (4.12) définissant une hauteur (H4.1) du premier tronçon de flèche (4.1). Le premier tronçon de mât (2.1) est relié au premier tronçon de flèche (4.1) en rotation autour d'un axe d'articulation (Y24). La direction de flèche (X4) est décalée par rapport à la direction de mât (Z2) parallèlement à l'axe d'articulation (Y24). Une distance entre l'axe d'articulation (Y24) et la limite inférieure (4.12) est supérieure à 75% de la hauteur (H4.1) du premier tronçon de flèche (4.1).The tower crane includes a boom and boom movable between a work configuration and a transport configuration. The mast has a first (2.1) and a second mast section. The boom has a first (4.1) and a second boom section. The first boom section (4.1) has an upper limit (4.11) and a lower limit (4.12) defining a height (H4.1) of the first boom section (4.1). The first mast section (2.1) is connected to the first boom section (4.1) in rotation about an articulation axis (Y24). The direction of arrow (X4) is offset with respect to the mast direction (Z2) parallel to the hinge axis (Y24). A distance between the hinge axis (Y24) and the lower limit (4.12) is greater than 75% of the height (H4.1) of the first boom section (4.1).
Description
La présente invention concerne une grue à tour à dépliage et repliage automatiques. La présente invention s'applique au domaine des grues à tour ayant un mât et une flèche, par exemple des grues à flèches distributrices ou des grues à flèches relevables.The present invention relates to an automatic folding and folding tower crane. The present invention is applicable to the field of tower cranes having a mast and an arrow, for example dispensing boom cranes or luffing boom cranes.
Cependant, une telle grue à tour est relativement encombrante en configuration de transport, en particulier en hauteur, car cette grue à tour impose de superposer les tronçons de flèche.However, such a tower crane is relatively bulky in transport configuration, especially in height, because this tower crane requires to superimpose the boom sections.
La présente invention a notamment pour but de résoudre, en tout ou partie, les problèmes mentionnés ci-avant.The present invention is intended in particular to solve, in whole or in part, the problems mentioned above.
Dans ce but, la présente invention a pour objet une grue à tour, à dépliage et repliage automatiques, comprenant un mât et une flèche configurés pour être placés au moins :
- dans une configuration de travail, dans laquelle le mât s'étend selon une direction de mât qui est sensiblement verticale, et la flèche s'étend selon une direction de flèche qui est sensiblement horizontale, et
- dans une configuration de transport dans laquelle le mât et la flèche sont repliés,
la flèche ayant au moins : un premier tronçon de flèche et un deuxième tronçon de flèche qui s'étendent sensiblement selon la direction de flèche lorsque la grue à tour est en configuration de travail, le premier tronçon de flèche ayant, au niveau du mât, une limite supérieure et une limite inférieure, la limite supérieure et la limite inférieure définissant une hauteur du premier tronçon de flèche,
le premier tronçon de mât étant relié au premier tronçon de flèche au moins en rotation autour d'un axe d'articulation, l'axe d'articulation s'étendant orthogonalement à la direction de mât et à la direction de flèche lorsque la grue à tour est en configuration de travail,
la grue à tour étant caractérisée :
- en ce que la direction de flèche est décalée par rapport à la direction de mât parallèlement à l'axe d'articulation,
- en ce qu'une distance entre l'axe d'articulation et la limite inférieure, mesurée parallèlement à la direction de mât, est supérieure à 75%, de préférence supérieure à 90%, de ladite hauteur du premier tronçon de flèche.
- in a working configuration, in which the mast extends in a mast direction which is substantially vertical, and the boom extends in a direction of arrow which is substantially horizontal, and
- in a transport configuration in which the mast and the boom are folded,
the boom having at least: a first boom section and a second boom section which extend substantially in the direction of the boom when the tower crane is in working configuration, the first boom section having, at the mast, an upper limit and a lower limit, the upper limit and the lower limit defining a height of the first boom section,
the first mast section being connected to the first boom section at least in rotation about a hinge axis, the hinge axis extending orthogonally to the mast direction and the boom direction when the crane turn is in working configuration,
the tower crane being characterized:
- in that the direction of arrow is offset with respect to the mast direction parallel to the hinge axis,
- in that a distance between the axis of articulation and the lower limit, measured parallel to the mast direction, is greater than 75%, preferably greater than 90%, of said height of the first boom section.
En d'autres termes, l'axe d'articulation s'étend dans une région supérieure du premier tronçon de flèche.In other words, the hinge axis extends in an upper region of the first boom section.
Ainsi, la grue à tour peut être rangée dans un container normalisé pour le fret (40 pieds de long, environ 12,20 m), tout en offrant une hauteur en configuration de travail supérieure à une grue à tour automontable de capacité équivalente. Typiquement, le gain en hauteur d'une grue à tour conforme à l'invention en configuration de travail peut être de 5 m, soit environ +20%.Thus, the tower crane can be stored in a standardized cargo container (40 feet long, approximately 12.20 m), while offering a height in working configuration superior to a self-supporting tower crane of equivalent capacity. Typically, the height gain of a tower crane according to the invention in working configuration can be 5 m, ie about + 20%.
Le décalage (ou déport) de la flèche par rapport au mât et l'emplacement haut de l'axe d'articulation permettent à la grue à tour d'avoir des dimensions optimales en configuration de transport, sans changer la largeur maximale du convoi déterminée par la largeur de l'essieu du véhicule. En effet, ce décalage permet de superposer deux rangées de tronçons de flèche repliés.The offset (or offset) of the boom relative to the mast and the high position of the hinge pin allow the tower crane to have optimal dimensions in transport configuration, without changing the maximum width of the convoy determined by the width of the axle of the vehicle. Indeed, this shift allows to superimpose two rows of folded boom sections.
Comme la direction de flèche est décalée par rapport à la direction de mât parallèlement à l'axe d'articulation, la direction de flèche et la direction de mât sont disjointes, donc non sécantes. De plus, lorsque la grue à tour est en configuration de travail, une portion latérale du premier tronçon de flèche s'étend le long d'une partie latérale du premier tronçon de mât.As the direction of arrow is offset from the mast direction parallel to the hinge axis, the direction of arrow and the direction of mast are disjoint, so non-secant. In addition, when the tower crane is in working configuration, a lateral portion of the first boom section extends along a lateral portion of the first mast section.
Lorsque la grue à tour est en configuration de travail sur un sol horizontal, la direction de mât peut former un angle compris entre 0 degré et 3 degrés avec une direction verticale. Lorsque la grue à tour est en configuration de travail, la direction de flèche peut former un angle compris entre 0 degrés et 45 degrés avec une direction horizontale.When the tower crane is in a working configuration on a horizontal ground, the mast direction can form an angle between 0 degrees and 3 degrees with a vertical direction. When the tower crane is in the working configuration, the boom direction can form an angle between 0 degrees and 45 degrees with a horizontal direction.
Selon une variante, la direction de flèche est orthogonale à la direction de mât lorsque la grue à tour est en configuration de travail, et la direction de flèche est sensiblement parallèle à la direction de mât lorsque la grue à tour est en configuration de transport.Alternatively, the boom direction is orthogonal to the mast direction when the tower crane is in the working configuration, and the boom direction is substantially parallel to the mast direction when the tower crane is in the transport configuration.
Selon une variante, le premier tronçon de mât a une section transversale de forme polygonale à au moins huit côtés, et le deuxième tronçon de mât a une section transversale de forme polygonale à au moins huit côtés.Alternatively, the first mast section has a cross section of polygonal shape to at least eight sides, and the second mast section has a cross section of polygonal shape to at least eight sides.
Selon une variante, le premier tronçon de mât a une forme globalement prismatique composée de tôles plates, et le deuxième tronçon de mât a une forme globalement prismatique composée de tôles plates.Alternatively, the first mast section has a generally prismatic shape composed of flat sheets, and the second mast section has a generally prismatic shape composed of flat sheets.
Selon un mode de réalisation, le premier tronçon de flèche comprend au moins : i) une membrure supérieure définissant la limite supérieure et ii) une membrure inférieure définissant la limite inférieure.According to one embodiment, the first boom section comprises at least: i) an upper chord defining the upper limit and ii) a lower chord defining the lower limit.
Selon une variante, le premier tronçon de flèche comprend deux membrures supérieures et deux membrures inférieures agencées de sorte que le premier tronçon de flèche a globalement une section trapézoidale transversalement à la direction de flèche. En d'autres termes, le pied de flèche comprend quatre membrures. Ainsi, le pied de flèche a une résistance très élevée aux efforts latéraux, tout en réduisant l'encombrement nécessaire aux tubes formant les membrures supérieures.According to a variant, the first boom section comprises two upper chords and two lower chords arranged so that the first boom section has a generally trapezoidal cross section transversely to the direction of arrow. In other words, the boom foot has four chords. Thus, the jib foot has a very high resistance to lateral forces, while reducing the space required for the tubes forming the upper chords.
Alternativement à cette variante, le premier tronçon de flèche comprend, sur la majorité de sa longueur, une seule membrure supérieure et deux membrures inférieures agencées de sorte que le premier tronçon de flèche a globalement la forme d'un triangle en section transversale à la direction de flèche, avec néanmoins une zone à section trapézoidale pour loger les paliers d'articulation entre flèche et mât.Alternatively to this variant, the first boom section comprises, over most of its length, a single upper chord and two lower chords arranged so that the first boom section has generally the shape of a triangle in cross section to the direction of arrow, with nevertheless a zone with trapezoidal section to house the bearings of articulation between boom and mast.
Alternativement encore, le premier tronçon de flèche a une structure de caisson et/ou le deuxième tronçon de flèche a une structure de caisson.Alternatively again, the first boom section has a box structure and / or the second boom section has a box structure.
Selon une variante, la grue à tour comprend en outre un dispositif d'articulation configuré pour lier le premier tronçon de mât au premier tronçon de flèche au moins en rotation autour de l'axe d'articulation. Le dispositif d'articulation peut comprendre des paliers rotatifs. Le dispositif d'articulation est dimensionné, en particulier en raideur, pour résister mécaniquement aux moments générés sur le mât par la position de la flèche en travail.Alternatively, the tower crane further comprises a hinge device configured to bind the first mast section to the first boom section at least in rotation about the hinge axis. The hinge device may comprise rotary bearings. The hinge device is dimensioned, in particular in stiffness, to mechanically resist the moments generated on the mast by the position of the boom in work.
Selon une variante, le premier tronçon de flèche comprend une portion d'articulation de flèche, le premier tronçon de mât comprend une portion d'articulation de mât, la portion d'articulation de flèche et la portion d'articulation de mât étant reliées par le dispositif d'articulation.According to a variant, the first boom section comprises a boom articulation portion, the first mast section comprises a mast articulation portion, the boom articulation portion and the mast articulation portion being connected by the articulation device.
La portion d'articulation de mât est située près de la limite supérieure du mât lorsque la grue à tour est en configuration de travail. Selon une variante, la distance entre la portion d'articulation de mât et la limite supérieure du mât est inférieure à 5% de la hauteur du premier tronçon de mât, mesurée parallèlement à la direction de mât lorsque la grue à tour est en configuration de travail.The mast hinge portion is located near the upper limit of the mast when the tower crane is in working configuration. According to one variant, the distance between the mast articulation portion and the upper limit of the mast is less than 5% of the height of the first mast section, measured parallel to the mast direction when the tower crane is in the configuration of the mast. job.
La portion d'articulation de flèche est située près de l'extrémité arrière de la flèche lorsque la grue à tour est en configuration de travail. Selon une variante, la distance entre la portion d'articulation de flèche (axe d'articulation) et l'extrémité arrière de la flèche (extrémité du poinçon) est inférieure à 20% de la longueur du premier tronçon de flèche, mesurée parallèlement à la direction de flèche lorsque la grue à tour est en configuration de travail.The boom articulation portion is located near the rear end of the boom when the tower crane is in working configuration. According to one variant, the distance between the boom articulation portion (hinge pin) and the rear end of the boom (end of the punch) is less than 20% of the length of the first boom section, measured parallel to arrow direction when the tower crane is in working configuration.
Selon un mode de réalisation, la direction de flèche est décalée par rapport à la direction de mât de sorte qu'une distance de décalage entre i) une portion latérale de la flèche tournée vers le mât et ii) une partie latérale du mât tournée vers la flèche, mesurée parallèlement à l'axe d'articulation, est supérieure à 200 mm, de préférence supérieure à 250 mm.According to one embodiment, the direction of the arrow is offset with respect to the mast direction so that an offset distance between i) a lateral portion of the arrow facing the mast and ii) a lateral portion of the mast facing towards the mast. the arrow, measured parallel to the axis of articulation, is greater than 200 mm, preferably greater than 250 mm.
Ainsi, la largeur de la flèche ne dépend pas de la largeur du mât, contrairement aux grues à tour de l'état de la technique. Donc la flèche peut avoir un premier tronçon de flèche élargi, ce qui augmente sa résistance mécanique aux efforts que la flèche transmet au mât.Thus, the width of the boom does not depend on the width of the mast, unlike tower cranes of the state of the art. Thus, the boom may have a first enlarged boom section, which increases its mechanical resistance to the forces that the boom transmits to the mast.
Selon une variante, une distance de décalage entre la direction de flèche et la direction de mât, mesurée parallèlement à l'axe d'articulation, est comprise entre 900 mm et 1100 mm.According to a variant, an offset distance between the direction of arrow and the mast direction, measured parallel to the axis of articulation, is between 900 mm and 1100 mm.
Selon un mode de réalisation, le premier tronçon de mât et le deuxième tronçon de mât sont configurés de sorte que le premier tronçon de mât peut coulisser dans le deuxième tronçon de mât.According to one embodiment, the first mast section and the second mast section are configured so that the first mast section can slide in the second mast section.
En d'autres termes, le mât comprend au moins une partie télescopique. En configuration de travail, le premier tronçon de mât s'étend substantiellement au-dessus du deuxième tronçon de mât ; en configuration de transport, le premier tronçon de mât s'étend substantiellement dans le deuxième tronçon de mât.In other words, the mast comprises at least one telescopic part. In working configuration, the first mast section extends substantially above the second mast section; in configuration transport, the first mast section extends substantially in the second mast section.
Ainsi, un tel mât télescopique permet non seulement d'avoir une grue à tour très compacte en configuration de transport et une hauteur de travail très élevée, mais aussi de relever la flèche en même temps que le télescopage du mât.Thus, such a telescopic mast not only allows to have a very compact tower crane in transport configuration and a very high working height, but also to raise the boom at the same time as the telescoping of the mast.
Selon un mode de réalisation, ladite hauteur du premier tronçon de flèche est supérieure à la largeur du premier tronçon de flèche, mesurée parallèlement à l'axe d'articulation.According to one embodiment, said height of the first boom section is greater than the width of the first boom section, measured parallel to the hinge axis.
En d'autres termes, la section transversale de la flèche est rectangulaire ou trapézoidale. Lorsque la grue à tour est en configuration de travail, le côté long de cette section transversale est vertical.In other words, the cross section of the arrow is rectangular or trapezoidal. When the tower crane is in working configuration, the long side of this cross section is vertical.
Selon une variante, la hauteur du premier tronçon de flèche est supérieure à 800 mm, par exemple environ égale à 1000 mm. Ainsi, une telle hauteur permet au premier tronçon de flèche de résister mécaniquement aux efforts que la flèche transmet au mât.According to one variant, the height of the first boom section is greater than 800 mm, for example approximately equal to 1000 mm. Thus, such a height allows the first boom section to mechanically resist the efforts that the arrow transmits to the mast.
Selon une variante, la hauteur du premier tronçon de flèche est plus grande que la hauteur du deuxième tronçon de flèche.According to a variant, the height of the first boom section is greater than the height of the second boom section.
Selon un mode de réalisation, la grue à tour comprend en outre :
- un châssis configuré pour supporter le mât et la flèche lorsque la grue à tour est en configuration de travail, le châssis étant destiné à recevoir un contrepoids,
- un tirant de retenue agencé pour relier l'extrémité arrière de la flèche au contrepoids, le tirant de retenue étant configuré pour s'étendre sensiblement parallèlement au mât lorsque la grue à tour est en configuration de travail, et
- un organe de transmission d'efforts agencé pour transmettre des efforts de la flèche au tirant de retenue, l'organe de transmission étant constitué d'un poinçon s'étendant obliquement par rapport à la direction de flèche.
- a frame configured to support the mast and the boom when the tower crane is in working configuration, the chassis being intended to receive a counterweight,
- a retaining tie arranged to connect the rear end of the boom to the counterweight, the retaining tie being configured to extend substantially parallel to the mast when the tower crane is in working configuration, and
- a force transmission member arranged to transmit forces of the boom to the retaining tie rod, the transmission member being constituted by a punch extending obliquely relative to the direction of arrow.
Ainsi, un tel tirant de retenue permet de compenser les effets de porte-à-faux induits par la flèche sur le mât.Thus, such a retaining tie compensates the effects of cantilever induced by the arrow on the mast.
Comme la grue à tour comprend un poinçon horizontal, la flèche est dépourvue de poinçon vertical pour supporter le premier tronçon de flèche, ce qui simplifie le montage de la grue à tour. En d'autres termes, le premier tronçon de flèche est « topless », car la grue à tour n'a pas de poinçon situé au-dessus du mât. Grâce à sa forme trapézoidale, la structure du premier tronçon de flèche est suffisante pour résister mécaniquement aux efforts générés par les poids morts et par la charge suspendue à la flèche.As the tower crane includes a horizontal punch, the boom is devoid of vertical punch to support the first boom section, which simplifies the mounting of the tower crane. In other words, the first boom section is "topless" because the tower crane has no punch located above the mast. Thanks to its trapezoidal shape, the structure the first boom section is sufficient to mechanically withstand the forces generated by the dead weight and the load suspended from the boom.
Selon une variante, le tirant de retenue est composé de barres articulées entre elles. L'angle de relevage de la flèche est géré avant le dépliage par un opérateur positionnant manuellement un verrou servant de butée entre un tirant mâle et un tirant femelle qui remplissent la fonction de retenue. Alternativement à cette variante, le tirant de retenue peut comprendre une portion de câble.According to one variant, the retaining tie is composed of bars articulated together. The lifting angle of the boom is managed before unfolding by an operator manually positioning a lock acting as a stop between a male tie rod and a female tie rod that perform the retaining function. Alternatively to this variant, the retaining tie may comprise a portion of cable.
Alternativement au mode de réalisation précédent, la grue à tour peut comprendre :
- un châssis configuré pour supporter le mât et la flèche lorsque la grue à tour est en configuration de travail, le châssis étant destiné à recevoir un contrepoids, et
- un vérin de retenue hydraulique agencé pour entraîner la flèche en rotation autour de l'axe d'articulation.
- a chassis configured to support the mast and the boom when the tower crane is in the working configuration, the chassis being intended to receive a counterweight, and
- a hydraulic holding cylinder arranged to drive the boom in rotation about the hinge axis.
Dans cette alternative, le vérin de retenue remplace une partie du tirant de retenue. Le vérin de retenue peut être hydraulique. Ainsi, un tel vérin de retenue permet la construction de grues à tour économiques, car le vérin de retenue reprend le moment vers l'avant, ce qui permet d'avoir un mécanisme de télescopage de faible capacité, qui est dimensionné uniquement pour télescoper des poids morts (mât et flèche à vide) mais pas pour relever la flèche.In this alternative, the retaining cylinder replaces a portion of the retaining tie. The holding cylinder can be hydraulic. Thus, such a holding cylinder allows the construction of economical tower cranes, because the holding cylinder takes the moment forward, which allows to have a telescoping mechanism of low capacity, which is dimensioned only for telescope dead weight (mast and empty boom) but not to raise the boom.
Selon une autre alternative à cette variante, la flèche est reliée mécaniquement à l'embase exclusivement par le mât télescopique, la largeur de la section transversale du mât télescopique étant inférieure à 70% de la longueur de la section transversale du mât télescopique.According to another alternative to this variant, the boom is mechanically connected to the base exclusively by the telescopic mast, the width of the cross section of the telescopic mast being less than 70% of the length of the cross section of the telescopic mast.
Selon une variante, la grue à tour comprend un treuil et un mouflage agencés pour transmettre un effort de relevage à la flèche. Ce treuil et ce mouflage remplacent alors une partie du tirant de retenue.Alternatively, the tower crane comprises a winch and a hanger arranged to transmit a lifting effort to the boom. This winch and haft then replace part of the retaining tie.
Selon une variante, la grue à tour comprend en outre un poinçon intermédiaire agencé au dessus de la jonction entre les premier et deuxième tronçons de flèche. Ainsi, un tel poinçon intermédiaire permet de réduire le poids mort du deuxième tronçon de flèche, ce qui réduit les moments induits sur le mât par la position décalée de la flèche.According to a variant, the tower crane further comprises an intermediate punch arranged above the junction between the first and second boom sections. Thus, such an intermediate punch reduces the dead weight of the second boom section, which reduces the moments induced on the mast by the offset position of the boom.
Selon un mode de réalisation, le poinçon comprend un élément de guidage qui est configuré pour guider le tirant de retenue, l'élément de guidage étant situé du côté opposé à la direction de flèche par rapport à la direction de mât.According to one embodiment, the punch comprises a guiding element which is configured to guide the retaining tie, the element of guide being located opposite the direction of arrow with respect to the mast direction.
En d'autres termes, l'élément de guidage et la direction de flèche sont situées de part et d'autre de la direction de mât. Ainsi, le poinçon s'étend selon une direction oblique par rapport à la direction de flèche, ce qui permet au poinçon de transmettre efficacement les efforts verticaux de la flèche au mât.In other words, the guide element and the direction of arrow are located on both sides of the mast direction. Thus, the punch extends in a direction oblique to the direction of arrow, which allows the punch to effectively transmit the vertical forces of the boom to the mast.
Selon un mode de réalisation, une distance entre l'élément de guidage du poinçon et la direction de mât, mesurée parallèlement à l'axe d'articulation, est comprise entre 75 mm et 150 mm.According to one embodiment, a distance between the punch guide element and the mast direction, measured parallel to the axis of articulation, is between 75 mm and 150 mm.
Ainsi, une telle distance permet au tirant de retenue de transmettre efficacement les efforts de la flèche au mât sans avoir un angle significatif entre la direction du tirant de retenue et la direction de mât pour chaque angle de travail, ce qui évite de générer des efforts horizontaux parasites.Thus, such a distance allows the retaining tie to effectively transmit the forces of the boom to the mast without having a significant angle between the direction of the retaining tie rod and the mast direction for each angle of work, which avoids generating efforts horizontal parasites.
Selon un mode de réalisation, le tirant de retenue s'étend sensiblement du côté opposé à la direction de flèche par rapport à la direction de mât,According to one embodiment, the retaining tie extends substantially from the opposite side to the direction of arrow relative to the direction of mast,
la grue à tour comprenant en outre un vérin de dépliage configuré pour déplier le mât, afin de placer le mât et la flèche en configuration de travail, le vérin de dépliage étant agencé sur le même côté de la direction de mât que le premier tronçon de flèche.the tower crane further comprising an unfolding ram configured to unfold the mast, to place the mast and the boom in working configuration, the unfolding ram being arranged on the same side of the mast direction as the first section of the mast. arrow.
En d'autres termes, le tirant de retenue et le vérin de dépliage s'étendent de part et d'autre de la direction de mât, car le tirant de retenue s'étend d'un côté de la direction de flèche et le vérin de dépliage s'étend de l'autre côté de la direction de flèche.In other words, the retaining tie and the unfolding ram extend on both sides of the mast direction, since the retaining tie extends on one side of the direction of arrow and the actuator unfolding extends on the other side of the arrow direction.
Ainsi, le tirant de retenue limite l'effet de porte-à-faux latéral de la flèche sur le mât, car le tirant de retenue est décalé sur le côté opposé à la direction de flèche. Comme le vérin de dépliage est situé du coté de la flèche, le vérin de dépliage est proche du centre de gravité global des masses à relever. Comme le tirant de retenue et le vérin de dépliage sont situés sur des côtés opposés, la grue à tour est particulièrement compacte en configuration de transport.Thus, the retaining tie restricts the lateral overhang effect of the boom on the mast, because the retaining tie is shifted to the side opposite to the direction of arrow. As the unfolding cylinder is located on the side of the boom, the unfolding cylinder is close to the overall center of gravity of the masses to be raised. Since the tie rod and the unfolding ram are located on opposite sides, the tower crane is particularly compact in transport configuration.
Selon un mode de réalisation, le poinçon et une portion inférieure du premier tronçon de flèche sont liés en rotation autour d'un axe de rotation qui est parallèle à l'axe d'articulation, la grue à tour comprenant en outre des bielles et un joint de type Cardan agencés pour relier le poinçon à une portion supérieure du premier tronçon de flèche, les bielles étant articulées entre elles par des liaisons pivotantes et par le joint de type Cardan.According to one embodiment, the punch and a lower portion of the first boom section are rotatably connected about an axis of rotation which is parallel to the hinge axis, the tower crane further comprising connecting rods and a Cardan-type joint arranged to connect the punch to an upper portion of the first boom section, the rods being hinged together by pivoting connections and the Cardan-type joint.
Ainsi, le poinçon, sur lequel est lié le tirant de retenue, peut se replier dans une position de rangement, dans laquelle le poinçon s'étend à la fois en regard du premier tronçon de flèche et en regard du premier tronçon de mât, ce qui est particulièrement compact. En effet, le joint de type Cardan et l'axe de rotation permettent de replier le poinçon selon des axes de pivotement disjoints.Thus, the punch, on which the retaining tie rod is attached, can be folded into a storage position, in which the punch extends both opposite the first boom section and opposite the first mast section, which is particularly compact. Indeed, the Cardan type joint and the axis of rotation allow to fold the punch according to disjoint pivot axes.
Selon un mode de réalisation, la grue à tour comprend en outre un câble de levage et plusieurs poulies configurées pour guider le câble de levage entre le premier tronçon de mât et le premier tronçon de flèche, les axes des poulies étant non parallèles, les poulies étant agencées de sorte que deux poulies consécutives le long du câble de levage ont deux directions tangentielles colinéaires.According to one embodiment, the tower crane further comprises a lifting cable and a plurality of pulleys configured to guide the lifting cable between the first mast section and the first boom section, the pulley shafts being non-parallel, the pulleys being arranged so that two consecutive pulleys along the lifting cable have two collinear tangential directions.
En d'autres termes, les chemins de deux poulies consécutives sont alignés. Ainsi, le câble de levage aura une grande résistance à l'usure et à la fatigue, car les chemins de poulies sont deux à deux alignés, ce qui élimine tout angle de déflexion du câble de levage entre deux poulies consécutives. Les poulies permettent de transmettre le mouvement du câble de levage s'étendant depuis un treuil de levage monté sur le châssis ou vers le pied du mât jusqu'à un chariot monté sur la flèche.In other words, the paths of two consecutive pulleys are aligned. Thus, the hoisting rope will have a high resistance to wear and fatigue, because the pulley paths are aligned in pairs, eliminating any angle of deflection of the hoisting rope between two consecutive pulleys. The pulleys transmit the movement of the hoisting rope extending from a hoist winch mounted on the frame or to the foot of the mast to a carriage mounted on the boom.
Selon un mode de réalisation, lorsque la grue à tour est en configuration de transport, le premier et le deuxième tronçons de flèche sont superposés et disposés à côté du mât.According to one embodiment, when the tower crane is in transport configuration, the first and second boom sections are superimposed and arranged next to the mast.
Selon une variante, la grue à tour comprend un troisième tronçon de flèche qui est relié mécaniquement au deuxième tronçon de flèche et qui est superposé aux premier et deuxième tronçons de flèche lorsque lorsque la grue à tour est en configuration de transport.According to one variant, the tower crane comprises a third boom section which is mechanically connected to the second boom section and which is superimposed on the first and second boom sections when the tower crane is in the transport configuration.
Les modes de réalisation et les variantes mentionnés ci-avant peuvent être pris isolément ou selon toute combinaison techniquement possible.The embodiments and variants mentioned above may be taken individually or in any combination technically possible.
La présente invention sera bien comprise et ses avantages ressortiront aussi à la lumière de la description qui va suivre, donnée uniquement à titre d'exemple non limitatif et faite en référence aux figures annexées, dans lesquelles des signes de références identiques correspondent à des éléments structurellement et/ou fonctionnellement identiques ou similaires. Dans les figures annexées :
- la
figure 1 est une vue de côté d'une grue à tour conforme à l'invention et comprenant un mât et une flèche, en configuration de travail ; - la
figure 2 est une vue de côté de la grue à tour de lafigure 1 en configuration de travail, dans une position relevée ; - la
figure 3 est une vue de côté de la grue à tour de lafigure 1 en configuration de transport dans un container ; - la
figure 4 est une vue de face, suivant la flèche IV, à lafigure 3 ; - la
figure 5 est une vue en perspective d'une partie arrière de la grue à tour de lafigure 1 ; - la
figure 6 est une vue de côté selon la flèche VI à lafigure 5 ; - la
figure 7 est une vue du dessus d'une partie arrière de la grue à tour de lafigure 1 ; - la
figure 8 est une vue du dessus d'une partie arrière de la flèche de lafigure 1 ; - la
figure 9 est une vue de côté d'une partie arrière, avec un poinçon déplié, de la flèche de lafigure 1 ; - la
figure 10 est une vue en perspective de la partie arrière de lafigure 9 ; - la
figure 11 est une vue de côté de la partie arrière de lafigure 9 , avec le poinçon en cours de repliage ; - la
figure 12 est une vue en perspective de la partie arrière de lafigure 11 ; - la
figure 13 est une vue de côté de la partie arrière de lafigure 9 , avec le poinçon replié ; - la
figure 14 est une vue en perspective de la partie arrière de lafigure 13 ; - la
figure 15 est une vue de dessus de la partie arrière de lafigure 13 ; - la
figure 16 est une vue en perspective de la grue à tour de lafigure 1 , en cours de dépliage ; - la
figure 17 est une vue de face de la grue à tour de lafigure 1 en configuration de travail ; - la
figure 18 est une vue à plus grande échelle du détail XVIII à lafigure 17 .
- the
figure 1 is a side view of a tower crane according to the invention and comprising a mast and an arrow, in working configuration; - the
figure 2 is a side view of the tower crane of thefigure 1 in working configuration, in a raised position; - the
figure 3 is a side view of the tower crane of thefigure 1 in transport configuration in a container; - the
figure 4 is a front view, following the arrow IV, at thefigure 3 ; - the
figure 5 is a perspective view of a rear part of the tower crane of thefigure 1 ; - the
figure 6 is a side view according to arrow VI at thefigure 5 ; - the
figure 7 is a top view of a rear part of the tower crane of thefigure 1 ; - the
figure 8 is a top view of a back part of the arrow of thefigure 1 ; - the
figure 9 is a side view of a rear part, with an unfolded punch, of the arrow of thefigure 1 ; - the
figure 10 is a perspective view of the back part of thefigure 9 ; - the
figure 11 is a side view of the back part of thefigure 9 , with the punch being folded; - the
figure 12 is a perspective view of the back part of thefigure 11 ; - the
figure 13 is a side view of the back part of thefigure 9 , with the folded punch; - the
figure 14 is a perspective view of the back part of thefigure 13 ; - the
figure 15 is a top view of the back part of thefigure 13 ; - the
figure 16 is a perspective view of the tower crane from thefigure 1 , being unfolded; - the
figure 17 is a front view of the tower crane of thefigure 1 in work configuration; - the
figure 18 is a larger-scale view of detail XVIII to thefigure 17 .
Les
- dans une configuration de travail, dans laquelle le mât 2 s'étend selon une direction de mât Z2 qui est sensiblement verticale, et la flèche 4 s'étend selon une direction de flèche X4 qui est sensiblement horizontale, et
- dans une configuration de transport, dans laquelle le mât 2 et la flèche 4 sont repliés, et dans laquelle la direction de flèche X4 est parallèle à la direction de mât Z2.
- in a working configuration, in which the
mast 2 extends in a mast direction Z2 which is substantially vertical, and thearrow 4 extends in a direction of arrow X4 which is substantially horizontal, and - in a transport configuration, in which the
mast 2 and theboom 4 are folded, and in which the direction of arrow X4 is parallel to the mast direction Z2.
Lorsque la grue à tour 1 est en configuration de travail (
Comme le montre la
Le premier tronçon de mât 2.1 a une section transversale de forme polygonale à huit côtés. Le deuxième tronçon de mât 2.2 a une section transversale de forme polygonale à huit côtés. Le premier tronçon de mât 2.1 a une forme globalement prismatique composée de tôles plates. Le deuxième tronçon de mât 2.2 a une forme globalement prismatique composée de tôles plates.The first mast section 2.1 has a cross section of polygonal shape with eight sides. The second mast section 2.2 has a polygonal cross section with eight sides. The first mast section 2.1 has a generally prismatic shape composed of flat sheets. The second mast section 2.2 has a generally prismatic shape composed of flat sheets.
Le premier tronçon de mât 2.1 et le deuxième tronçon de mât 2.2 sont configurés de sorte que le premier tronçon de mât 2.1 peut coulisser dans le deuxième tronçon de mât 2.2, pendant des phases de télescopage afin de déplier et replier la grue à tour 1.The first mast section 2.1 and the second mast section 2.2 are configured so that the first mast section 2.1 can slide in the second mast section 2.2, during telescoping phases to unfold and fold the tower crane 1.
Le mât 2 comprend donc ici une partie télescopique, composée des premier 2.1 et deuxième 2.2 tronçons de mât. En configuration de travail (
La flèche 4 a un premier tronçon de flèche 4.1, un deuxième tronçon de flèche 4.2 et un troisième tronçon de flèche 4.3. Le premier tronçon de flèche 4.1, le deuxième tronçon de flèche 4.2 et le troisième tronçon de flèche 4.3 s'étendent sensiblement selon la direction de flèche X4 lorsque la grue à tour 1 est en configuration de travail.The
Le premier tronçon de mât 2.1 est relié au premier tronçon de flèche 4.1 en rotation autour d'un axe d'articulation Y24. L'axe d'articulation Y24 s'étend orthogonalement à la direction de mât Z2 et à la direction de flèche X4 lorsque la grue à tour 1 est en configuration de travail et lorsque la grue à tour 1 est en configuration de transport.The first mast section 2.1 is connected to the first boom section 4.1 in rotation about a hinge axis Y24. The hinge axis Y24 extends orthogonally to the mast direction Z2 and to the arrow direction X4 when the tower crane 1 is in the working configuration and when the tower crane 1 is in the transport configuration.
Comme le montrent les
La hauteur H4.1 est mesurée orthogonalement à la direction de flèche X4 lorsque la grue à tour 1 est en configuration de travail. La hauteur H4.1 du premier tronçon de flèche 4.1 est supérieure à la largeur W4.1 du premier tronçon de flèche 4.1, mesurée parallèlement à l'axe d'articulation Y24. La section transversale de la flèche 4 est ici trapézoidale.The height H4.1 is measured orthogonal to the direction of arrow X4 when the tower crane 1 is in working configuration. The height H4.1 of the first boom section 4.1 is greater than the width W4.1 of the first boom section 4.1, measured parallel to the hinge axis Y24. The cross section of the
La hauteur H4.1 du premier tronçon de flèche 4.1 est ici environ égale à 1000 mm. La hauteur H4.1 du premier tronçon de flèche 4.1 est plus grande que la hauteur du deuxième tronçon de flèche 4.2 et que la hauteur du troisième tronçon de flèche 4.3.The height H4.1 of the first boom section 4.1 is here approximately equal to 1000 mm. The height H4.1 of the first boom section 4.1 is greater than the height of the second boom section 4.2 and the height of the third boom section 4.3.
Dans l'exemple des
La grue à tour 1 comprend en outre un dispositif d'articulation 3 qui est configuré pour relier en rotation le premier tronçon de mât 2.1 et le premier tronçon de flèche 4.1. Le dispositif d'articulation 3 comprend des paliers rotatifs. Le dispositif d'articulation 3 est dimensionné, en contraintes et en déformations, pour résister mécaniquement aux moments générés sur le mât 2 par la position de la flèche 4 en travail.The tower crane 1 further comprises a
Le premier tronçon de flèche 4.1 comprend une portion d'articulation de flèche 4.5. Le premier tronçon de mât 2.1 comprend une portion d'articulation de mât 2.5. Le dispositif d'articulation 3 relie mécaniquement la portion d'articulation de flèche 4.5 et la portion d'articulation de mât 2.5.The first boom section 4.1 comprises a boom articulation portion 4.5. The first mast section 2.1 comprises a mast articulation portion 2.5. The
La portion d'articulation de mât 2.5 est située près de la limite supérieure 2.11 du mât 2 lorsque la grue à tour 1 est en configuration de travail (
La portion d'articulation de flèche 4.5 est située près de l'extrémité arrière de la flèche 4 lorsque la grue à tour 1 est en configuration de travail. La distance entre la portion d'articulation de flèche 4.5 et l'extrémité arrière de la flèche 4 est inférieure à 20% de la longueur du premier tronçon de flèche 4.1, mesurée parallèlement à la direction de flèche X4 lorsque la grue à tour 1 est en configuration de travail.The boom articulation portion 4.5 is located near the rear end of the
Comme le montrent les
En l'occurrence, la direction de flèche X4 est décalée par rapport à la direction de mât Z2 de sorte qu'une distance de décalage D24.1 entre i) la portion latérale 4.10 tournée vers le mât 2 et ii) la partie latérale 2.10 tournée vers la flèche 4, mesurée parallèlement à l'axe d'articulation Y24, est environ égale à 250 mm. Une distance de décalage D24.2 entre la direction de flèche X4 et la direction de mât Z2, mesurée parallèlement à l'axe d'articulation Y24, est ici environ égale à 900 mm.In this case, the direction of arrow X4 is shifted with respect to the mast direction Z2 so that an offset distance D24.1 between i) the lateral portion 4.10 turned towards the
Par ailleurs, une distance D4.24 entre l'axe d'articulation Y24 et la limite inférieure 4.12, mesurée parallèlement à la direction de mât Z2 comme le montre la
Comme le montre la
Les axes des poulies 24 ne sont pas parallèles. Les poulies 24 sont agencées de sorte que deux poulies 24 consécutives le long du câble de levage 22 ont deux directions tangentielles qui sont colinéaires. Donc les chemins de deux poulies consécutives sont alignés, ce qui donne au câble de levage 22 une grande résistance à l'usure et à la fatigue, car les chemins de poulies sont deux à deux alignés.The axes of the
Par ailleurs, la grue à tour 1 comprend en outre un châssis 8, un tirant de retenue 12 et un organe de transmission d'efforts qui est agencé pour transmettre des efforts de la flèche 4 au tirant de retenue 12 et qui est formé ici par un poinçon 14.Furthermore, the tower crane 1 further comprises a
Le châssis 8 est configuré pour supporter le mât 2 et la flèche 4 lorsque la grue à tour 1 est en configuration de travail. Le châssis 8 reçoit un contrepoids 10 lorsque la grue à tour 1 est en configuration de travail. Le châssis 8 est ici composé d'une partie tournante 8.1, d'une partie fixe 8.2 et d'une couronne d'orientation 8.3 qui articule la partie tournante 8.1 par rapport à la partie fixe 8.2.The
Le tirant de retenue 12 relie l'extrémité arrière de la flèche 4 à l'extrémité arrière de la partie tournante 8.1. Le tirant de retenue 12 s'étend sensiblement parallèlement au mât 2 lorsque la grue à tour 1 est en configuration de travail. Le tirant de retenue 12 est ici composé de plusieurs barres articulées dont certaines sont télescopiques.The retaining
L'organe de transmission d'efforts est constitué seulement du poinçon 14. Comme le montrent les
L'élément de guidage 14.1 est situé du côté opposé à la direction de flèche X4 par rapport à la direction de mât Z2. Donc l'élément de guidage 14.1 et la direction de flèche X4 sont situées de part et d'autre de la direction de mât Z2. Une distance D2.14 entre l'élément de guidage 14.1 du poinçon 14 et la direction de mât Z2 est ici environ égale à 120 mm, mesurée parallèlement à l'axe d'articulation Y24.The guide member 14.1 is located on the opposite side to the arrow direction X4 with respect to the mast direction Z2. Thus the guide member 14.1 and the direction of arrow X4 are located on both sides of the mast direction Z2. A distance D2.14 between the guide element 14.1 of the
De plus, la grue à tour 1 comprend un poinçon intermédiaire 17, qui est partiellement visible sur les
La grue à tour 1 comprend en outre un vérin de dépliage 16 configuré pour déplier le mât 2, afin de placer le mât 2 en configuration de travail. La flèche 4 est mise en configuration de travail par le télescopage du mât 4. Le vérin de dépliage 16 est agencé sur le même côté de la direction de mât Z2 que le premier tronçon de flèche 4.1.The tower crane 1 further comprises an unfolding
Comme le montrent les
Comme le montrent notamment les
La grue à tour 1 comprend en outre des bielles 18 et un joint de type Cardan 20 qui est agencé pour relier le poinçon 14 à une portion supérieure 4.16 du premier tronçon de flèche 4.1. les bielles 18 sont articulées entre elles par des liaisons pivotantes et par le joint de type Cardan 20. Lorsque la grue à tour 1 est en phase de dépliage ou de repliage, les bielles 18 et le joint de type Cardan 20 permettent de déplier ou replier le poinçon 14 depuis ou vers une position de rangement.The tower crane 1 further comprises connecting
En position de rangement, le poinçon 14 s'étend à la fois en regard du premier tronçon de flèche 4.1 et en regard du premier tronçon de mât 2.1. Le joint de type Cardan 20 et l'axe de rotation Y4.15 permettent de replier le poinçon 14 lorsque le mât 2 et la flèche 4 sont repliés en configuration de transport.In the storage position, the
Comme le montrent les
Comme le montrent les
Comme le montre la
Le premier 4.1, le deuxième 4.2 et le troisième 4.3 tronçons de flèche peuvent être superposés, notamment car la flèche 4 est décalée ou déportée latéralement par rapport au mât 2 et car l'axe d'articulation Y24 est placé en haut du premier tronçon de flèche 4.1.The first 4.1, the second 4.2 and the third 4.3 boom sections can be superimposed, in particular because the
Comme le montre la
Bien entendu, la présente invention n'est pas limitée aux modes de réalisation particuliers décrits dans la présente demande de brevet, ni à des modes de réalisation à la portée de l'homme du métier. D'autres modes de réalisation peuvent être envisagés sans sortir du cadre de l'invention, à partir de tout élément équivalent à un élément indiqué dans la présente demande de brevet.Of course, the present invention is not limited to the particular embodiments described in this patent application, nor to the embodiments within the reach of those skilled in the art. Other embodiments may be envisaged without departing from the scope of the invention, from any element equivalent to an element indicated in the present patent application.
Claims (12)
la flèche (4) ayant au moins : un premier tronçon de flèche (4.1) et un deuxième tronçon de flèche (4.2) qui s'étendent sensiblement selon la direction de flèche (X4) lorsque la grue à tour (1) est en configuration de travail, le premier tronçon de flèche (4.1) ayant, au niveau du mât (2), une limite supérieure (4.11) et une limite inférieure (4.12), la limite supérieure (4.11) et la limite inférieure (4.12) définissant une hauteur (H4.1) du premier tronçon de flèche (4.1),
le premier tronçon de mât (2.1) étant relié au premier tronçon de flèche (4.1) au moins en rotation autour d'un axe d'articulation (Y24), l'axe d'articulation (Y24) s'étendant orthogonalement à la direction de mât (Z2) et à la direction de flèche (X4) lorsque la grue à tour (1) est en configuration de travail,
la grue à tour (1) étant caractérisée :
the boom (4) having at least: a first boom section (4.1) and a second boom section (4.2) which extend substantially in the direction of arrow (X4) when the tower crane (1) is in configuration the first boom section (4.1) having, at the mast (2), an upper limit (4.11) and a lower limit (4.12), the upper limit (4.11) and the lower limit (4.12) defining a height (H4.1) of the first boom section (4.1),
the first mast section (2.1) being connected to the first boom section (4.1) at least in rotation about an articulation axis (Y24), the articulation axis (Y24) extending orthogonally to the direction of the mast (Z2) and the direction of arrow (X4) when the tower crane (1) is in working configuration,
the tower crane (1) being characterized:
la grue à tour (1) comprenant en outre un vérin de dépliage (16) configuré pour déplier le mât (2), afin de placer le mât (2) et la flèche (4) en configuration de travail, le vérin de dépliage (16) étant agencé sur le même côté de la direction de mât (Z2) que le premier tronçon de flèche (4.1).A tower crane (1) according to any one of claims 6 to 8, wherein the retaining tie (12) extends substantially opposite to the direction of arrow (X4) with respect to the mast direction (Z2 )
the tower crane (1) further comprising an unfolding ram (16) configured to unfold the mast (2), in order to place the mast (2) and the boom (4) in working configuration, the unfolding cylinder ( 16) being arranged on the same side of the mast direction (Z2) as the first boom section (4.1).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1563220A FR3046149B1 (en) | 2015-12-23 | 2015-12-23 | AUTOMATICALLY FOLDING AND FOLDING CRANE COMPRISING A MAT AND ARROW DECALED FROM MATERIAL |
Publications (2)
Publication Number | Publication Date |
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EP3184481A1 true EP3184481A1 (en) | 2017-06-28 |
EP3184481B1 EP3184481B1 (en) | 2019-01-23 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP16201221.5A Active EP3184481B1 (en) | 2015-12-23 | 2016-11-29 | Tower crane with automatic folding and unfolding, and comprising a mast and a boom offset relative to the mast |
Country Status (5)
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US (1) | US10577228B2 (en) |
EP (1) | EP3184481B1 (en) |
CN (1) | CN106904541B (en) |
ES (1) | ES2721303T3 (en) |
FR (1) | FR3046149B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3816091A1 (en) | 2019-10-31 | 2021-05-05 | Manitowoc Crane Group France | Hammerhead tower crane with automatic folding and unfolding |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015003982A1 (en) * | 2015-03-26 | 2016-09-29 | Liebherr-Werk Biberach Gmbh | crane tower |
FR3046152B1 (en) * | 2015-12-23 | 2017-12-29 | Manitowoc Crane Group France | LIFTING UNIT, RECEIVABLE CRANE CRANE COMPRISING SUCH A LIFTING UNIT AND METHOD FOR ASSEMBLING SUCH CRANE |
DE102016015385A1 (en) * | 2016-12-22 | 2018-06-28 | Liebherr-Werk Biberach Gmbh | Crane with folding jib |
JP7187856B2 (en) | 2018-07-12 | 2022-12-13 | コベルコ建機株式会社 | Link mechanism |
ES2910102A1 (en) | 2020-11-09 | 2022-05-11 | Saez Machinery S L | Automated folding and deployed tower crane (Machine-translation by Google Translate, not legally binding) |
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US5140929A (en) * | 1990-05-03 | 1992-08-25 | Ppm Zone Industrielle De La Saule | Handling boom comprising a main boom and an additional boom |
EP0855361A1 (en) | 1996-12-23 | 1998-07-29 | Potain | Telescopic mast for a tower crane |
US20140131300A1 (en) * | 2012-11-09 | 2014-05-15 | Gru Comedil S.R.L. | Jib for a crane |
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ES2352807T3 (en) * | 2004-12-03 | 2011-02-23 | Manitowoc Crane Group Germany Gmbh | AUTOMOTIVE CRANE. |
AT505729B1 (en) * | 2007-09-11 | 2010-10-15 | Ehrenleitner Franz | COLLAPSE BOOM |
CN201598120U (en) * | 2009-12-30 | 2010-10-06 | 安徽柳工起重机有限公司 | Crawler crane jib support structure |
CN103145054B (en) * | 2013-03-20 | 2015-10-07 | 中联重科股份有限公司 | Auxiliary jib tail frame, auxiliary jib comprising same and hoisting equipment |
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-
2015
- 2015-12-23 FR FR1563220A patent/FR3046149B1/en not_active Expired - Fee Related
-
2016
- 2016-11-29 EP EP16201221.5A patent/EP3184481B1/en active Active
- 2016-11-29 ES ES16201221T patent/ES2721303T3/en active Active
- 2016-12-21 CN CN201611193558.1A patent/CN106904541B/en active Active
- 2016-12-23 US US15/389,933 patent/US10577228B2/en active Active
Patent Citations (5)
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FR2104681A1 (en) * | 1970-07-06 | 1972-04-21 | Serieye Daniel | |
US5140929A (en) * | 1990-05-03 | 1992-08-25 | Ppm Zone Industrielle De La Saule | Handling boom comprising a main boom and an additional boom |
EP0473518A1 (en) * | 1990-07-31 | 1992-03-04 | Potain | Self-erecting crane with laterally foldable jib |
EP0855361A1 (en) | 1996-12-23 | 1998-07-29 | Potain | Telescopic mast for a tower crane |
US20140131300A1 (en) * | 2012-11-09 | 2014-05-15 | Gru Comedil S.R.L. | Jib for a crane |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3816091A1 (en) | 2019-10-31 | 2021-05-05 | Manitowoc Crane Group France | Hammerhead tower crane with automatic folding and unfolding |
FR3102763A1 (en) | 2019-10-31 | 2021-05-07 | Manitowoc Crane Group France | Tower crane with automatic folding and unfolding punch |
US11420851B2 (en) | 2019-10-31 | 2022-08-23 | Manitowoc Crane Group France | Tower crane with automatic folding and unfolding stanchion |
Also Published As
Publication number | Publication date |
---|---|
CN106904541A (en) | 2017-06-30 |
US10577228B2 (en) | 2020-03-03 |
ES2721303T3 (en) | 2019-07-30 |
FR3046149A1 (en) | 2017-06-30 |
US20170183203A1 (en) | 2017-06-29 |
EP3184481B1 (en) | 2019-01-23 |
CN106904541B (en) | 2020-03-03 |
FR3046149B1 (en) | 2017-12-29 |
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