EP1325882A1 - Dispositif de levage pour lever des charges - Google Patents

Dispositif de levage pour lever des charges Download PDF

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Publication number
EP1325882A1
EP1325882A1 EP02027474A EP02027474A EP1325882A1 EP 1325882 A1 EP1325882 A1 EP 1325882A1 EP 02027474 A EP02027474 A EP 02027474A EP 02027474 A EP02027474 A EP 02027474A EP 1325882 A1 EP1325882 A1 EP 1325882A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
lifting
lifting device
piston
bridge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02027474A
Other languages
German (de)
English (en)
Other versions
EP1325882B1 (fr
Inventor
Karl-Heinz Jung
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE20220613U priority Critical patent/DE20220613U1/de
Publication of EP1325882A1 publication Critical patent/EP1325882A1/fr
Application granted granted Critical
Publication of EP1325882B1 publication Critical patent/EP1325882B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25Constructional features
    • B66F3/36Load-engaging elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated

Definitions

  • the present invention relates to a hydraulic lifting device, especially a small lifting device for lifting of loads.
  • Lifting devices of this type are used, comparatively heavy loads such as Machines and tracked vehicles, to raise. For example, with such Lifting device Loads raised from 10 t to 50 t become.
  • DE 93 12 940 U1 is a hydraulic small lifting device. known that a hydraulic arranged parallel to the stroke direction Has piston-cylinder unit. In a cylinder this piston-cylinder unit has a piston with stroke adjustment stored, which is attached to a piston rod is. The piston rod is on a side facing away from the piston Side out of the cylinder and on a base plate supported, which has two support feet. On the cylinder a lifting tab is welded to one end facing the base plate.
  • the present invention addresses the problem for a lifting device of the type mentioned specify improved embodiment, in particular at a relatively simple structure for lifting relatively heavy loads is suitable.
  • the invention is based on the general idea, two in parallel to provide hydraulic piston-cylinder units, whose cylinders are connected by a bridge, the lift tab attached to this bridge or attachable is.
  • the lifting device be used to lift heavy loads using the lifting device at the same time has a compact structure.
  • the bridge between arranged in the cylinders and facing each other Sides of the cylinders. Due to this design positioning the lift tab closer to the cylinders.
  • the lifting tab can be positioned between the cylinders be positioned on the bridge. This is it possible to move the lifting device closer to the load to be lifted to position, which reduces the resulting moments and the performance of the lifting device is increased. It is of particular importance that this Measure the friction between the cylinders and the piston rods can be reduced, making the performance of such Lifts can increase. Increased at the same time the stability of the lifting device.
  • At least the piston rod in one of the piston-cylinder units with the support foot and with the piston rotatably connected be, the piston rotatable about the cylinder longitudinal axis is stored in the associated cylinder and with the support foot is designed so that it is relative to the cylinder around the cylinder's longitudinal axis is rotatably arranged. Because of this design is the rotatability of the piston to realize a Swivel adjustment of the support foot used. Additional measures, bearings or the like, in particular, are not required, so that the lifting device according to the invention particularly compact and inexpensive. Swiveling support feet are particularly advantageous if the one to be lifted No space for the load across the piston rod protruding support feet is provided. By swinging away the support feet can thus be closer to the lifting device be brought up to the load to be lifted.
  • lift tab is separate Component is formed and has a hook, with which the lifting strap can be hooked onto the bridge.
  • this Construction can in particular different, to different Custom lift tabs provided for use cases and hooked onto the bridge as required.
  • the lifting device particularly versatile. Furthermore, the lifting strap is particularly subject to high wear exposed. By training as a separate component can particularly easily counter a damaged lifting tab a new one will be exchanged.
  • the cylinder 4 has on its support leg 7 facing End of a guide sleeve 8 on the piston rod 6th is guided axially. Between the guide sleeve 8 and the piston rod 6 the smallest possible radial play is to be observed, to tilt the guide sleeve 8 relative to the piston rod 6 to avoid. Between this guide sleeve 8 and a cylinder end 9 facing away from the support foot 7 the cylinder 4 a radial play against the piston rod 6, i.e. outside the guide sleeve 8 is between the Cylinder 4 and the piston rod 6 formed a radial gap 10. In this way there is a wall contact between Avoided piston rod 6 and cylinder 4.
  • the piston 5 is expediently with a radial play in relation to the cylinder 4 equipped, so that tilting with increased Wear between piston 5 and cylinder 4 can be avoided can. These measures result in the cylinder 4 the stroke adjustment between cylinder 4 and piston rod 6 is guided exclusively by the guide sleeve 8.
  • 3 to 5 is between the two cylinders 4 of the two piston-cylinder units 2 a bridge 14 arranged which is transverse to the longitudinal central axes designated 13 or cylinder longitudinal axes 13 of the cylinder 4 extends.
  • This bridge 14 is on both cylinders 4 and the guide sleeves 8 attached, in particular by means of appropriate Welds 15. At this bridge 14 is one Lift tab 16 attached. It is also possible to use the guide sleeves 8 together with the bridge 14 as an integral casting train.
  • the lift tab 16 is L-shaped Angle formed of a back part 17 which is parallel to the Stroke direction 3 extends, and has a loading part 18, the protrudes transversely from the back part 17. On one facing away from the charging part 18 At the end, a hook 19 is formed on the back part 17, with which the lifting strap 16 on one of the support feet 7 facing away from the upper edge 20 of the bridge 14 is hooked.
  • the bridge upper edge 20 has a step 21 for this purpose on.
  • the lifting tab 16 is in the embodiment shown here designed as a separate component, depending on requirements can be hooked onto or detached from the bridge 14. On A particular advantage of this design is seen in the fact that a worn lifting tab 16 easily against one new ones can be exchanged.
  • lifting tabs 16 are provided, depending on the respective application can come. It is also possible to bridge 14 To design so that the lifting tab 16 on different Stroke positions on the bridge 14 can be determined. In particular can bridge 14 for this purpose up to about the top Extend ends of the cylinders 4.
  • the lifting strap 16 attached to the bridge 14 is supported with their back part 17 on the bridge 14.
  • the bridge 14 between the cylinders 4 is arranged so that they on the cylinders 4 or on their guide sleeves 8 is attached to mutually facing sides.
  • the back part 17 of the attached lifting tab 16 only slightly in the direction of the charging part 18 via the cylinder 4 or their Guide sleeves 8 protrudes.
  • the positioning of the bridge 14 is also chosen so that the back part 17 does not have the cylinders 4 or whose guide sleeves 8 protrudes towards the charging part 18.
  • This special arrangement of the bridge 14 has the consequence that the lifting device 1 with its piston-cylinder units 2 be brought particularly close to a load to be lifted can. This allows great leverage and therefore great moments be avoided when lifting the load.
  • the piston 5 is rotatably supported in the cylinder 4. Furthermore are the support feet 7 shaped so that even when lowered Bridge 14 pivotable about the longitudinal axis 13 of the cylinder are. A corresponding swivel adjustability is shown in Fig. 3 symbolized by double arrows 22. Since each support leg 7 is rotatably connected to the associated piston rod 6 and this in turn rotatably with the respective piston 5 is coupled, each support leg 7 together with the piston rod 6 and the piston 5 relative to the cylinder 4 around the Pivot axis 13 can be pivoted. This construction method has Consequence that no additional bearings or the like. be provided must be such a pivotability of the support feet 7 to ensure.
  • This pivotability of the support feet 7 is particularly advantageous because it enables the Lifting tab 16 also in a tab receptacle on the to be lifted Introduce load if none for the support feet 7 appropriate or suitable receptacle or recess on the Load is provided.
  • a cylinder head plate 9 facing away from the support feet 7 23 attached, in particular welded the additionally or alternatively to the lifting strap 16 for lifting one Load is usable.
  • This head plate 23 can also be removed or be designed to be pluggable.
  • a lifting device Form adapted to loads e.g. Prism to train.
  • As well can provide an assortment of different head plates 23 depending on the respective application can be used.
  • the lifting tab 16 With piston 5 fully retracted into cylinder 4 the lifting tab 16 is lowered to the maximum, i.e. the lifting tab 16 lies with its loading part 18 according to FIG. 1 like the support feet 7 on a floor or surface not specified here on. In this position, the lifting device 1 can be placed on a load to be lifted that the charging unit 18 of the lifting strap 16 engages under the load to be lifted. If necessary, the support feet 7 must be removed from the lifting strap 16 can be pivoted outwards or backwards.
  • the piston rods are supported 6 carried load relatively directly and parallel to Stroke direction 3 on the support feet 7, where that bending loads or moments within the lifting device 1 largely avoided become.
  • the lifting device 1 is relative stable, which ensures safety when lifting heavy loads is increased.
  • Another special feature of the lifting device according to the invention 1 results when a lifting device 1 is used Load is lifted on one side in such a way that the load is increased by one pivots pivot axis distant from the lifting device 1, the lifting device 1 laterally engages the load, i.e. the loading part 18 of the lifting tab 16 extends parallel to the swivel axis.
  • a conventional lifting device moves the lifting strap when lifting or swiveling the Load parallel to the floor so that the through the Swing load inclined relative to the ground only on the the swivel axis facing end edge of the loading part of the Lift tab rests. This creates the risk that the Load slips off the lifting tab.
  • the two piston rods 6 different when lifting or swiveling the load Perform strokes because the two piston-cylinder units 2 are hydraulically connected in parallel. This leads to to the fact that the lifting tab 16 with its loading part 18 also then lies flat against the load if there is a Swing the inclination of the loading part 18 or the lifting tab 16 changed from the ground. That further from the swivel axis removed piston-cylinder unit 2 then continues off, with the result that the lifting device 1 is opposite a vertical tends.
  • the support feet tilt 7 with the floor and ensure a secure stand Lifting device 1. The risk that the load from the lifting strap 16 slips, is reduced.
  • the lifting device 1 according to the invention is relatively compact and can therefore be comparatively light and in particular be trained to be portable. At the same time, the invention Lifting device 1 lifting relatively heavier Loads, for example from 10 t to 50 t.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Load-Engaging Elements For Cranes (AREA)
EP02027474A 2002-01-03 2002-12-10 Dispositif de levage pour lever des charges Expired - Lifetime EP1325882B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20220613U DE20220613U1 (de) 2002-01-03 2002-12-10 Hebevorrichtung zum Anheben von Lasten

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10200094A DE10200094C1 (de) 2002-01-03 2002-01-03 Hebevorrichtung zum Anheben von Lasten
DE10200094 2002-01-03

Publications (2)

Publication Number Publication Date
EP1325882A1 true EP1325882A1 (fr) 2003-07-09
EP1325882B1 EP1325882B1 (fr) 2006-04-26

Family

ID=7711483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02027474A Expired - Lifetime EP1325882B1 (fr) 2002-01-03 2002-12-10 Dispositif de levage pour lever des charges

Country Status (4)

Country Link
EP (1) EP1325882B1 (fr)
AT (1) ATE324346T1 (fr)
DE (2) DE10200094C1 (fr)
ES (1) ES2261585T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108675193A (zh) * 2018-07-04 2018-10-19 天津景天威力达液压千斤顶有限公司 一种防倾斜的液压千斤顶

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10349389B3 (de) * 2003-10-21 2005-04-28 Karl-Heinz Jung Hydraulische Hebeeinrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2163959A (en) * 1937-03-18 1939-06-27 John A Edeby Lifting jack
US2508240A (en) * 1947-07-24 1950-05-16 Edward H Fenn Hydraulic jack
US2550674A (en) * 1944-04-21 1951-05-01 Joy Mfg Co Supporting column
US3047269A (en) * 1960-08-30 1962-07-31 Modern Hydraulics Inc Hydraulic jack
DE9312940U1 (de) 1993-08-28 1994-01-13 Jung Karl Heinz Hydraulisches Kleinhebegerät
EP0720964A1 (fr) * 1995-01-04 1996-07-10 Jin Soo Park Dispositif auxiliaire d'un cric hydraulique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6928444U (de) * 1969-07-17 1969-12-04 Georg Markus Kramp Hydraulisches hebegeraet

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2163959A (en) * 1937-03-18 1939-06-27 John A Edeby Lifting jack
US2550674A (en) * 1944-04-21 1951-05-01 Joy Mfg Co Supporting column
US2508240A (en) * 1947-07-24 1950-05-16 Edward H Fenn Hydraulic jack
US3047269A (en) * 1960-08-30 1962-07-31 Modern Hydraulics Inc Hydraulic jack
DE9312940U1 (de) 1993-08-28 1994-01-13 Jung Karl Heinz Hydraulisches Kleinhebegerät
EP0720964A1 (fr) * 1995-01-04 1996-07-10 Jin Soo Park Dispositif auxiliaire d'un cric hydraulique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108675193A (zh) * 2018-07-04 2018-10-19 天津景天威力达液压千斤顶有限公司 一种防倾斜的液压千斤顶
CN108675193B (zh) * 2018-07-04 2023-09-22 天津景天威力达液压千斤顶有限公司 一种防倾斜的液压千斤顶

Also Published As

Publication number Publication date
DE10200094C1 (de) 2003-07-31
ES2261585T3 (es) 2006-11-16
DE50206553D1 (de) 2006-06-01
ATE324346T1 (de) 2006-05-15
EP1325882B1 (fr) 2006-04-26

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