EP1992586A2 - Mécanisme pour régler la distance entre le premier et le deuxième élément de support - Google Patents

Mécanisme pour régler la distance entre le premier et le deuxième élément de support Download PDF

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Publication number
EP1992586A2
EP1992586A2 EP07101730A EP07101730A EP1992586A2 EP 1992586 A2 EP1992586 A2 EP 1992586A2 EP 07101730 A EP07101730 A EP 07101730A EP 07101730 A EP07101730 A EP 07101730A EP 1992586 A2 EP1992586 A2 EP 1992586A2
Authority
EP
European Patent Office
Prior art keywords
spindle
mechanism according
arm
upper arm
lower arm
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Withdrawn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
EP07101730A
Other languages
German (de)
English (en)
Other versions
EP1992586A3 (fr
Inventor
Søren Kaastrup
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.)
KAASTRUP Soren
Original Assignee
KAASTRUP Soren
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 KAASTRUP Soren filed Critical KAASTRUP Soren
Publication of EP1992586A2 publication Critical patent/EP1992586A2/fr
Publication of EP1992586A3 publication Critical patent/EP1992586A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/0633—Mechanical arrangements not covered by the following subgroups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/0608—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement driven by screw or spindle

Definitions

  • the present invention concerns a mechanism for adjusting distance between a first and a second support member, preferably an elevating mechanism for an elevating table, and of the type two-part legs in pairs, each including a first upper arm and a first lower arm that each are connected with a support part at one end and which are mutually connected by a first articulated joint at their second ends, and where the two legs are mutually connected with a spindle connected by threaded bushings associated with each of the first articulated joints, producing a reduction of the angle between the first upper arm and the first lower arm by rotation of the spindle in one direction and increase of the angle by rotation of the spindle in the other direction, in order thereby to reduce or to increase, respectively, the distance between the support members.
  • the support members may be a support upon a floor and against a working plate or frame for a working platform which is to be raised and lowered relative to the floor.
  • upper and lower as used in the present application, reference is made to an application with the legs largely vertically oriented.
  • the mechanism may also be used with other orientations. It may, for example, be used for providing distance between two supporting plates for application with vertical orientation, e.g. for supporting shuttering in excavations.
  • the mechanism is unfavourable as the legs are folded outwards, and are thus required to locate at a position some distance within under a tabletop. This also produces instability, causing that the tabletop cannot be loaded at the corners as a risk of tilting of the table is present.
  • a leg with second upper and lower arms enables establishing stable legs and disposition of the spindle between the two legs engaging both first and second sets of arms provides a very stable support.
  • the legs including two sets of arms it becomes possible to dispose the legs right at the ends of a working plate or similar which is disposed upon the support members, and to let one set of arms pivot in against the second leg by maintaining the position of the spindle in the bearing. This may e.g. be effected by letting a locking ring interact with a ring-shaped cutout so that the spindle is retained against displacing relative to the bearing.
  • support may be maintained approximately at the extreme ends of the working plate.
  • the mechanism is furthermore a production- and mounting-friendly design.
  • the mechanism according to the invention is peculiar in that the two legs are interconnected by a crossbar connected with the articulated joints.
  • the crossbar will preferably be secured to the articulated joints, which include the bearings and will be displaceably connected to the articulated joints that include the threaded bushings.
  • the crossbar may hereby function as a guide for the displacement of the threaded bushing during the mutual pivoting of the arms, while the bearings remain in a securely retained position.
  • each arm includes two parallel arm elements.
  • the arm elements may be disposed with mutual spacing, which is desired so that arm elements can be provided approximately under the corners of a working plate or similar placed on the support members of the mechanism.
  • the mechanism according to the invention is peculiar in that the crossbar includes two parallel crossbar elements. This provides better rigidity and at the same time the articulated joints can be fastened between the two crossbar elements, thereby kept fixed in a particularly secure way without any risk of twisting, even under heavy load on a working plate placed on the mechanism.
  • the mechanism according to the invention is peculiar in that one end of the spindle includes a left-handed thread for interacting with the threaded bushing in one leg, and that the other end of the spindle includes a right-handed thread for interacting with the threaded bushing in the other leg.
  • the mechanism according to the invention is peculiar in that the support members include a support for disposition on a floor and an support for carrying a working platform, working plate or similar. This is particularly advantageous when the mechanism is used as support structure in an elevating table or as a support structure in an elevating platform, e.g. for use in a scaffold.
  • the mechanism according to the invention is peculiar in that the second upper arm and the second lower arm are connected at about the centre of the first upper and lower arms.
  • the second upper arm and the second lower arm are connected at about the centre of the first upper and lower arms.
  • each of the first arms has a length of 560 mm and each of the second arms has a length of 280 mm.
  • the connection between the first and second arms will be provided at the centre between the ends of the first arms.
  • the mechanism according to the invention is peculiar in that the bearing at the second articulated joint is adapted for securing at the outer ends of the spindle so that the second articulated joint and the support members in a leg are situated largely in the same plane during the changing of the distance between the support members.
  • the legs may hereby be disposed at a position adjacent to the ends of a tabletop so that the tabletop may be loaded at the extreme ends without any risk of tilting.
  • the mechanism according to the invention is peculiar in that at least one end of the threaded rod is provided with means for engaging drive means in the form of drive motor, crank handle, ratchet wrench or similar. If a fastened nut or Allen screw is used, then a standard drilling machine with suitable key insert can be used for lifting and lowering a tabletop on a support structure.
  • the mechanism according to the invention is peculiar in that a pair of first upper arm elements are disposed in the same plane as a pair of second lower arm elements, and that a pair of second upper arm elements are disposed in the same plane as a pair of first lower arm elements.
  • the mechanism is provided with a support at one end of the mechanism.
  • a support By elevation from fully lowered position, usually a large moment is required because of the folded state of the legs.
  • the support which has greater height than the height of the legs in the fully collapsed condition, ensures that the mechanism is not to carry the weight of the entire construction at the initial elevating. A substantially smaller moment may thus be applied for the initial elevation.
  • FIGs. 1 - 4 A mechanism according to the invention is shown in Figs. 1 - 4 in the form of a support structure I for an elevating table 2 which is shown in Fig. 7 .
  • the support structure 1 includes two legs 3 for disposition at each end of a tabletop 4 and fastened thereto by means of not shown fastening means.
  • Each leg 3 is two-part and includes a first upper arm 5 and a first lower arm 6.
  • the first upper arm 5 is formed by two parallel arm elements 5a and 5b and the first lower arm 6 is formed by two parallel arm elements 6a and 6b.
  • Each of the arms 5 is connected to a transverse support rod 7 which is fastened to both arm elements 5a and 5b and intended for supporting the tabletop 4.
  • Each of the arms 6 is connected to a transverse support rod 8 which is fastened to both arm elements 6a and 6b and intended for being supported by a floor.
  • the support rod 8 may optionally be provided with contact blocks 9 as shown in Fig. 7 .
  • Each of the first upper arms 5 and the first lower arms 6 are connected with a first articulated joint 10 enabling mutual pivoting of the upper arm 5 and the lower arm 6.
  • each leg 3 there is provided a threaded bushing 11 engaging a threaded spindle 12.
  • the threaded bushings 11 are connected with the spindle 12 which has a first half 12a with left-handed thread and a second half 12b with right-handed thread, which are connected by threaded bushings associated with each of the first articulated joints 10, producing a reduction of the angle between the first upper arm 5 and the first lower arm 6 by rotating the spindle 12 in one direction and increase of the angle by rotating the spindle 12 in the other direction, in order thereby to reduce or to increase the distance between the support members 7 and 8.
  • each leg 3 there are provided a second upper arm 13 and a second lower arm 14, the second arms being connected at their first ends 15 and 16, respectively, with the first upper arm 5 via an articulated joint 19 and the first lower arm 6 via an articulated joint 20, respectively, at a position between the outer ends of the first upper arm 5 and the first lower arm 6, respectively.
  • the second upper arm 13 and the second lower arm 14 are interconnected at the other ends 17 and 18, respectively, by a second articulated joint 21, and provided farther from each other than the first articulated joints 10.
  • the second upper arm 13 is formed by two parallel arm elements 13a and 13b
  • the second lower arm 14 is formed by two parallel arm elements 14a and 14b.
  • a bearing 22 for the spindle 12 is provided.
  • the bearing 22 is provided in rotational connection with the spindle 12 at each end, and is designed so that the spindle 12 may rotate freely but may not be displaced in relation to the bearing 22.
  • a crossbar 23 is provided between the legs 3, connected with the articulated joints 10 and 21 and including two parallel crossbar elements 23a and 23b which are disposed in parallel with the spindle 12 and at positions above and below the spindle 12.
  • the first pair of upper arm elements 5a, 5b are disposed in the same plane as the second pair of lower arm elements 14a, 14b, and the second pair of upper arm elements 13a, 13b are disposed in the same plane as the first pair of lower arm elements 6a, 6b.
  • the spindle 12 is provided at the end with a hexagonal profile 28 that constitutes means for engaging drive means in the form of drive motor, crank handle, ratchet wrench or similar.
  • Figs. 5 and 6 The embodiment shown in Figs. 5 and 6 is primarily distinguished by not having a crossbar disposed in parallel with the spindle 12. At each leg 3', separate arms 5' and 6' are provided at each corner. These are interconnected by crossbars 24 and 25, respectively, which at their centre support further arms 13' and 14'.
  • the support members are here provided by an upper frame 26 for supporting a working platform, tabletop or similar, and a lower frame 27 for disposition on a floor. The function would be analogous to the above described embodiment.
  • Figs. 8 and 9 differs from the above described by being provided with a support 29 at one end of the mechanism.
  • a support 29 at one end of the mechanism.
  • the height of the support 29 is greater than the height of the collapsed legs. Therefore, initial raising is obtained when there is no load on the legs 3 at the left side, from the situation shown in Fig. 8 to the situation shown in Fig. 9 where the left leg 3 touches the base.
  • the support may be formed by two legs at each side, or may be a throughgoing plate extending across the width of the mechanism.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Manipulator (AREA)
  • Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
EP07101730A 2006-02-04 2007-02-05 Mécanisme pour régler la distance entre le premier et le deuxième élément de support Withdrawn EP1992586A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK200600154A DK200600154A (da) 2006-02-04 2006-02-04 Justeringsmekanisme

Publications (2)

Publication Number Publication Date
EP1992586A2 true EP1992586A2 (fr) 2008-11-19
EP1992586A3 EP1992586A3 (fr) 2009-02-25

Family

ID=38430388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07101730A Withdrawn EP1992586A3 (fr) 2006-02-04 2007-02-05 Mécanisme pour régler la distance entre le premier et le deuxième élément de support

Country Status (2)

Country Link
EP (1) EP1992586A3 (fr)
DK (1) DK200600154A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013207505A1 (de) * 2013-04-25 2014-10-30 Weber Maschinenbau Gmbh Breidenbach Handhabungsvorrichtung
JP2016056000A (ja) * 2014-09-10 2016-04-21 トヨタ車体株式会社 ワーク昇降装置
CN115123979A (zh) * 2022-06-14 2022-09-30 广西大学 升降平台和高空救援车

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU92774B1 (en) 2015-07-13 2017-01-31 Oget Innovations Gmbh Plant conditioning composition, method of preparation and uses thereof
CN106696917B (zh) * 2016-11-28 2023-06-09 零八一电子集团四川红轮机械有限公司 一种蛙腿机构及一种装备车

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US740398A (en) * 1902-11-14 1903-10-06 Merrell Autry Cheves Scaffold.
US2471901A (en) * 1945-04-25 1949-05-31 Weaver Mfg Co Load-lifting appliance
US2696970A (en) * 1951-03-01 1954-12-14 John V Hill Elevator table
DE2933171A1 (de) * 1979-08-16 1981-02-26 Elias Dietel Mobile hebebuehne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013207505A1 (de) * 2013-04-25 2014-10-30 Weber Maschinenbau Gmbh Breidenbach Handhabungsvorrichtung
JP2016056000A (ja) * 2014-09-10 2016-04-21 トヨタ車体株式会社 ワーク昇降装置
CN115123979A (zh) * 2022-06-14 2022-09-30 广西大学 升降平台和高空救援车
CN115123979B (zh) * 2022-06-14 2024-06-04 广西大学 升降平台和高空救援车

Also Published As

Publication number Publication date
EP1992586A3 (fr) 2009-02-25
DK200600154A (da) 2007-08-05

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