EP2910513A1 - Hebevorrichtung mit einer Regulierung der Höhenlage - Google Patents

Hebevorrichtung mit einer Regulierung der Höhenlage Download PDF

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Publication number
EP2910513A1
EP2910513A1 EP15155725.3A EP15155725A EP2910513A1 EP 2910513 A1 EP2910513 A1 EP 2910513A1 EP 15155725 A EP15155725 A EP 15155725A EP 2910513 A1 EP2910513 A1 EP 2910513A1
Authority
EP
European Patent Office
Prior art keywords
frame
lifting
gear
lifting apparatus
relative
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.)
Withdrawn
Application number
EP15155725.3A
Other languages
English (en)
French (fr)
Inventor
Nicolas Guy André Jupille
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mobilev Cranes
Original Assignee
Mobilev Cranes
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mobilev Cranes filed Critical Mobilev Cranes
Publication of EP2910513A1 publication Critical patent/EP2910513A1/de
Withdrawn legal-status Critical Current

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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
    • B66C23/36—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 mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/48—Manually-movable jib cranes for use in workshops

Definitions

  • the present invention relates to a hoist, including a mini-crane.
  • the mini-crane type lifting apparatus comprises a frame, a boom mounted on the chassis for lifting a load, a front axle and a rear axle supporting the chassis, the rear axle being pivotally mounted relative to the chassis around the axle. a substantially vertical axis to allow an operator to maneuver the hoist.
  • the chassis is relatively low compared to the rear axle. This can be a problem when moving mini-cranes, especially when the surface on which the mini-crane is moved is irregular or when the mini-crane has to go through a vertical ramp connecting two surfaces at different altitudes, as the Bottom of the chassis may rub or stumble against a step or slight obstacle.
  • mini-crane type lifting gear is conventionally designed for use in places with high spatial constraints, such as factories or construction sites. It is therefore important to have compact and manoeuvrable hoisting equipment.
  • mini-cranes can have a mass of several tons.
  • the mini-cranes must therefore offer the most possible guarantees in terms of stability to prevent accidental tipping that can lead to injury or damage to property.
  • the present invention aims to overcome all or part of these disadvantages by providing a compact lifting device, manageable, stable, can be moved without difficulty on an uneven surface.
  • the subject of the present invention is a lifting machine comprising an arrow intended to lift a load, a chassis to which the boom is connected, and a rear axle for partially supporting the chassis, characterized in that the machine lifting comprises connecting means connecting the rear axle and the chassis, the connecting means being configured to allow a substantially vertical movement of the rear axle relative to the chassis between a first position in which the rear axle is positioned relative to the chassis so that the ground clearance of the hoist is minimal and a second position in which the rear axle is positioned relative to the chassis so that the ground clearance of the hoist is maximum, and in that the lifting gear includes means designed to move the rear axle between the first position and the second position.
  • the ground clearance of the hoist according to the invention is adjustable. This allows the handling of the hoist on uneven surfaces, for example presenting an obstacle such as a step.
  • the drive means comprise a hydraulic cylinder and a pressure sensor configured to detect a predetermined threshold pressure value in a cylinder chamber.
  • An advantage of these features is to avoid a tilting of the hoist when the hoist moves a load.
  • control means can automatically stop the movement of the arrow.
  • the control means may further control a movement of the arrow which is the opposite of that which caused the variation of pressure in the inner chamber of the cylinder, so that the arrow returns to a more stable position.
  • the connecting means comprise two connecting rods, each rod comprising a first end pivotally mounted relative to the chassis and a second end connected to the rear axle by a pivot connection, the two rods being arranged relative to each other. to the other in deformable parallelogram.
  • the hydraulic cylinder comprises an end connected to the rear axle by a pivot connection, and an end pivotally mounted relative to the chassis.
  • An advantage of this feature is to add an additional connection between the rear axle and the chassis, in addition to those made by the connecting rods, to limit any angular movement possible between the rear axle and the connecting rods. This prevents pitching movement of the rear axle relative to the chassis. The life of the rear axle is significantly improved.
  • the connecting means comprise two pairs of rods substantially symmetrical with respect to a median longitudinal plane of the hoist, each pair of rods forming a deformable parallelogram connecting the rear axle to the chassis.
  • An advantage of these features is better resistance to a relative longitudinal axis torque between the rear axle and the chassis, especially when a load is raised laterally. This improves the service life of the link between the rear axle and the chassis.
  • each connecting rod extends obliquely relative to a transverse plane of the hoist, so that the substantially symmetrical connecting rods of each pair form a V.
  • An advantage of this feature is an improved recovery of transverse forces experienced by the rear axle.
  • This feature is particularly advantageous when the rear axle comprises a directional wheel rotatably mounted relative to the rear axle about a substantially vertical axis. Thus, the longevity of the connection between the rear axle and the chassis is improved.
  • the hydraulic cylinder extends between the two pairs of rods.
  • An advantage of these features is a reduction in the transverse bulk of the hoist.
  • the rear axle comprises an offset arm extending towards the chassis, and the hydraulic cylinder is connected to one end of the offset arm.
  • This characteristic offers the advantage, with identical cylinder stroke, of increasing the range of adjustment of the ground clearance.
  • the lifting apparatus comprises two stabilizing lateral feet movable relative to the frame between an extended position in which a distal end of the lateral stabilizing feet is intended to bear against the ground and a folded position in which this distal end is intended to be arranged at a distance from the ground
  • the lifting gear comprises a fixing interface fixed to the frame, the connecting means and the lateral stabilizing feet being connected to the frame via the interface of fixation.
  • An advantage of these features is to improve the longevity of the connection between the rear axle and the chassis while improving the stability of the lifting gear in operation.
  • the attachment interface transmits to the stabilizing lateral feet the transverse forces experienced by the connecting means.
  • the connecting means have improved longevity.
  • the lateral stabilizing feet comprise a proximal end connected to the attachment interface by a pivot connection and a lumen formed between the proximal end and the distal end, and the lifting device comprising two jacks. each having a proximal end connected to the fixation interface by a pivot connection and a distal end slidably mounted in the lumen of one of the stabilizing lateral feet.
  • the figure 1 shows a lifting gear 1 according to one embodiment of the invention.
  • the lifting gear 1 can be a mini-crane, as illustrated on the figure 1 .
  • the lifting gear 1 can be self-propelled.
  • the lifting apparatus 1 comprises an arrow 2 intended to lift a load, for example a load whose mass is less than or equal to about 2.5 tons, a chassis 4 on which the boom 2 can be mounted to rotate around a vertical axis, a front train 6 comprising in particular two front wheels 8 which can be connected to the chassis 4 by two beams 10, these two beams 10 being connectable to the chassis 4 by a slide connection of axis substantially parallel to a longitudinal axis X of the lifting gear 1, so that these beams 10 are telescopic, and a rear gear 12 partially supporting the frame 4.
  • a load for example a load whose mass is less than or equal to about 2.5 tons
  • a front train 6 comprising in particular two front wheels 8 which can be connected to the chassis 4 by two beams 10, these two beams 10 being connectable to the chassis 4 by a slide connection of axis substantially parallel to a longitudinal axis X of the lifting gear 1, so that these
  • the rear train 12 may comprise a frame 14, a wheel 16, and a flange 18 on which the wheel 16 is rotatably mounted about a substantially horizontal axis.
  • the rear train 12 may comprise a single wheel 16, as shown on the Figures 1 to 5 .
  • the wheel 16 may be directional, the flange 18 being rotatably mounted relative to the frame 14 about a substantially vertical axis. This increases the handling of the lifting gear 1.
  • the rear gear 12 may comprise a motor 20 for driving the wheel 16 in rotation relative to the flange 18.
  • the rear train 12 includes a handling lever 22 allowing an operator to maneuver the rear train 12 and therefore the machine 1 lifting.
  • the lifting gear 1 comprises connecting means connecting the rear gear 12 to the frame 4.
  • the connecting means are configured to allow a substantially vertical movement of the rear gear 12 relative to the frame 4, between a first position, visible on the figure 4 and on the figure 5 (in solid lines), in which the rear gear 12 is positioned relative to the chassis 4 so that the ground clearance of the lifting gear 1 is minimal, and a second position, visible on the figure 5 (in dashed lines), wherein the rear gear 12 is positioned relative to the frame 4 so that the ground clearance of the lifting gear 4 is maximum.
  • the plane formed by the bearing surfaces of the wheels 8, 16 on the ground may be substantially perpendicular to the axis of rotation of the boom 2 relative to the frame 4, and in the second position this axis of rotation of the boom 2 relative to the chassis 4 is inclined relative to the plane formed by the bearing surfaces of the wheels 8, 16 on the ground.
  • the axis of rotation of the wheel 16 may be located above a plane containing the axes along which extend longitudinally the two beams 10 when the rear train 12 is in the first position, and be located below of this plane when the rear train 12 is in second position.
  • substantially vertical displacement is meant a displacement of a first position at a second position with a non-zero vertical component, that is to say between two positions which are offset along a vertical axis Z of the machine 1 lifting.
  • This displacement therefore includes a displacement in circular translation as described below.
  • the connecting means advantageously comprise two rods 24 arranged relative to each other in deformable parallelogram.
  • the movement of the rear gear 12 relative to the frame 4 is here a circular translational movement.
  • Each connecting rod 24 here comprises a first end 240 pivotally mounted relative to the frame 4 about an axis substantially parallel to a transverse axis Y of the lifting gear 1, and a second end 242 connected to the rear gear 12, in particular to the frame 14, by a pivot link P1, P2 with a transverse axis Y.
  • the lifting gear 1 further comprises drive means designed to move the rear gear 12 between the first and second positions.
  • the drive means and the connecting means may be adapted to move the rear train 12 from the first position to the second position so as to compensate a slope ⁇ which is for example of the order of 6 °.
  • the drive means may advantageously comprise a hydraulic cylinder 26 and a pressure sensor 28 configured to detect a predetermined threshold pressure value in a chamber of the cylinder 26.
  • the hoist 1 may further comprise control means, such as a booster, designed to control the automatic stop of a displacement of the boom 2 when the pressure sensor 28 detects the predetermined threshold pressure value.
  • control means can also be designed to control a movement of the boom 2 which is the opposite of that which caused the pressure variation in the inner chamber of the cylinder 26, so that the arrow 2 returns to a more stable position.
  • the jack 26 can be arranged so that in the first position, its rod 30 is deployed, and that in the second position, its rod 30 is retracted.
  • the drive means comprise a single jack 26.
  • the costs are thus reduced compared to a solution in which two jacks would be used.
  • the connecting means may comprise, in addition to the pair of connecting rods 24, a second pair of rods 32.
  • These two pairs of rods 24, 32 are substantially symmetrical with respect to a median longitudinal plane of the lifting gear 1, that is to say a plane substantially perpendicular to a transverse direction Y of the hoist and separating the hoist 1 in two substantially similar parts.
  • each pair of connecting rods 24, 32 forms a deformable parallelogram connecting the rear gear 12 to the chassis 4.
  • each connecting rod 24, 32 may extend obliquely with respect to a transverse plane YZ of the hoist, so that the substantially symmetrical connecting rods of each pair form a V.
  • the hydraulic jack 26 may comprise an end 260 connected to the rear gear 12, in particular to the frame 14, by a pivot link P3 having a transverse axis Y, and an end 262 mounted to rotate with respect to the frame 4 about a transverse axis. .
  • the hydraulic cylinder 26 preferably extends between the two pairs of rods 24, 32.
  • the rear gear 12, in particular the frame 14 may comprise an offset arm 34 extending towards the chassis 4, preferably in a direction substantially parallel to the longitudinal direction X of the lifting gear 1, and the jack 26 is connected by the pivot connection P3 to a distal end 340 of the offset arm 34, that is to say the end of the offset arm 34 which is closest to the frame 4.
  • the lifting gear 1 may also comprise two stabilizing lateral feet 36, movable relative to the chassis 4 between an extended position, visible on the Figures 1 to 4 , in which a distal end 360 of the stabilizing lateral feet 36 is intended to bear against the ground and a folded position, visible on the figure 5 , in which this distal end 360 is intended to be arranged at a distance from the ground.
  • the lifting gear 1 also comprises an attachment interface 38 fixed to the frame 4.
  • the connecting means and the stabilizing lateral feet 36 are connected to the frame 4 via the interface 38 for fixing.
  • connecting rods 24, 32 are connected to the attachment interface 38 by pivot links P4, P5 having a transverse axis Y.
  • the hydraulic cylinder 26 can be connected to the chassis 4 via the interface 38 for fixing; the jack 26 is for example connected to the interface 38 for fixing by a pivot connection P6 transverse axis Y.
  • the stabilizing lateral feet 36 may comprise a proximal end 362 connected to the attachment interface 38 by a pivot connection P7, P8 with a longitudinal axis X and a slot 40 formed between the proximal end 362 and the distal end 360.
  • the lifting gear 1 further comprises two jacks 42 each having a proximal end 420 connected to the interface 38 for fixing by a pivot connection P9, P10 of longitudinal axis X and a distal end 422 slidably mounted in the slot 40 of the corresponding lateral foot 36.
  • the lumen 40 may be arranged closer to the proximal end 362 than the distal end 360 of the corresponding stabilizing lateral foot 36.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
EP15155725.3A 2014-02-21 2015-02-19 Hebevorrichtung mit einer Regulierung der Höhenlage Withdrawn EP2910513A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1451408A FR3017862B1 (fr) 2014-02-21 2014-02-21 Engin de levage avec reglage de garde au sol

Publications (1)

Publication Number Publication Date
EP2910513A1 true EP2910513A1 (de) 2015-08-26

Family

ID=51417329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15155725.3A Withdrawn EP2910513A1 (de) 2014-02-21 2015-02-19 Hebevorrichtung mit einer Regulierung der Höhenlage

Country Status (2)

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EP (1) EP2910513A1 (de)
FR (1) FR3017862B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUA20163367A1 (it) * 2016-05-12 2017-11-12 Jacques Tranchero Gru per il sollevamento ed il trasporto di carichi dotata di un sistema di trazione.
FR3077064A1 (fr) * 2018-01-23 2019-07-26 Mobilev Cranes Engin de levage a fleche articulee

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2849124A (en) * 1956-05-07 1958-08-26 William H Warner Engine auxiliary equipment handling jack assembly
WO1989000928A1 (en) * 1987-07-24 1989-02-09 Karlin, Gunvor (Legal Representative For The Estat Cross-country vehicle
EP0383254A2 (de) * 1989-02-17 1990-08-22 Wagner Fördertechnik GmbH & Co KG Hubwagen mit einer in vertikaler Richtung federbelasteten vorgespannten Antriebseinheit
WO2003013999A2 (en) * 2001-08-03 2003-02-20 The Government Of The United States Of America, As Represented By The Secretary Of The Department Of Health And Human Services, Centers For Disease Control And Prevention Mobile load handling apparatus
WO2005108685A1 (en) * 2004-04-30 2005-11-17 The Board Of Regents For Oklahoma State University Remotely operated self-loading/unloading railroad gondola car-top material handler
US20060049003A1 (en) * 2004-09-03 2006-03-09 Sica Patsy L Material Handling Lift Vehicle And Suspension System For Use Therewith

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2849124A (en) * 1956-05-07 1958-08-26 William H Warner Engine auxiliary equipment handling jack assembly
WO1989000928A1 (en) * 1987-07-24 1989-02-09 Karlin, Gunvor (Legal Representative For The Estat Cross-country vehicle
EP0383254A2 (de) * 1989-02-17 1990-08-22 Wagner Fördertechnik GmbH & Co KG Hubwagen mit einer in vertikaler Richtung federbelasteten vorgespannten Antriebseinheit
WO2003013999A2 (en) * 2001-08-03 2003-02-20 The Government Of The United States Of America, As Represented By The Secretary Of The Department Of Health And Human Services, Centers For Disease Control And Prevention Mobile load handling apparatus
WO2005108685A1 (en) * 2004-04-30 2005-11-17 The Board Of Regents For Oklahoma State University Remotely operated self-loading/unloading railroad gondola car-top material handler
US20060049003A1 (en) * 2004-09-03 2006-03-09 Sica Patsy L Material Handling Lift Vehicle And Suspension System For Use Therewith

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUA20163367A1 (it) * 2016-05-12 2017-11-12 Jacques Tranchero Gru per il sollevamento ed il trasporto di carichi dotata di un sistema di trazione.
WO2017195140A1 (en) * 2016-05-12 2017-11-16 Jacques Tranchero Crane for lifting and transporting loads, equipped with a drive system
US11420852B2 (en) 2016-05-12 2022-08-23 Jacques Tranchero Crane for lifting and transporting loads, equipped with a drive system
FR3077064A1 (fr) * 2018-01-23 2019-07-26 Mobilev Cranes Engin de levage a fleche articulee

Also Published As

Publication number Publication date
FR3017862A1 (fr) 2015-08-28
FR3017862B1 (fr) 2019-03-29

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