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EP2318301A1 - Plate-forme de levage - Google Patents

Plate-forme de levage

Info

Publication number
EP2318301A1
EP2318301A1 EP09807943A EP09807943A EP2318301A1 EP 2318301 A1 EP2318301 A1 EP 2318301A1 EP 09807943 A EP09807943 A EP 09807943A EP 09807943 A EP09807943 A EP 09807943A EP 2318301 A1 EP2318301 A1 EP 2318301A1
Authority
EP
European Patent Office
Prior art keywords
scissor
scissors
elements
platform
rotation
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
EP09807943A
Other languages
German (de)
English (en)
Other versions
EP2318301B1 (fr
Inventor
Raymond Smith
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.)
MavelTech AG
Original Assignee
MavelTech AG
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 MavelTech AG filed Critical MavelTech AG
Priority to EP09807943A priority Critical patent/EP2318301B1/fr
Publication of EP2318301A1 publication Critical patent/EP2318301A1/fr
Application granted granted Critical
Publication of EP2318301B1 publication Critical patent/EP2318301B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/042—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations actuated by lazy-tongs mechanisms or articulated levers
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/22—Scaffolds having a platform on an extensible substructure, e.g. of telescopic type or with lazy-tongs mechanism

Definitions

  • the invention relates to a lifting platform according to the preamble of claim 1.
  • the object of the invention is to propose a more advantageous lift. This object is achieved with a lift having the features of claim 1.
  • the dependent claims 2 to 14 relate to further advantageous embodiments.
  • the object is achieved in particular a scissors lift mechanism comprising scissor elements which are mutually rotatably mounted both on common axes of rotation and are mounted at attachment points with respect to a subframe, a platform or a base such as a floor, wherein the scissor elements are designed as telescopic elements and respectively a first and a second scissor element part, which are telescopically mutually displaceable, wherein all scissors elements are designed as telescopic elements, wherein the scissors lift mechanism has at least four scissor elements, and wherein two scissor elements at a crossing point have a common axis of rotation, each scissor element mounted on the second scissor element part at an attachment point is, and wherein each two first scissor element parts are rotatably connected to each other via a common
  • Scissor lift mechanism comprises scissor elements which are mutually rotatably mounted both on common axes of rotation and are rotatably mounted on axes of rotation with respect to the subframe or the platform, wherein the scissor elements are designed as telescopic elements and each having a first and a second scissor element part, which are telescopically mutually displaceable.
  • the inventive scissors lift mechanism and the lift according to the invention have the advantage that it is relatively small and lightweight and yet has a relatively large lifting height, at least one lifting height as this is mainly used in practical use.
  • a small model of the lifting platform according to the invention could for example have a total weight of 500 kg. However, depending on the size of the lift, it may also have a total weight of 1000 kg or more.
  • the small, lightweight and therefore easy to transport embodiment is of particular importance, since the previously known scissor lift mechanisms and lifts are usually made relatively large and heavy, which is why high transport costs. For example, a large number of lifting platforms are used at large construction sites at the same time.
  • the lifts are often only for a relatively short time in use, which is why the simple and inexpensive transportability of the inventive lift is of crucial economic importance.
  • the lift can also easily by hand moved and transported at least over short distances.
  • the scissors lift mechanism has only a few scissor elements, which is why the platform is relatively stable even at maximum lift height. Since the scissor elements are at least partially designed as telescopic elements, the lift according to the invention has the property that, despite a small number of scissor elements, it can achieve a relatively high maximum lifting height, at least one lifting height, which is sufficient in most applications.
  • the lifting platform according to the invention therefore has a combination of extremely advantageous properties, namely a relatively high lifting height, compact design, light weight and high platform stability.
  • the relatively small dimension and the relatively light weight also makes it possible to transport a plurality of the lifting platforms according to the invention at the same time, for example on a lorry.
  • a person is sufficient to load and unload these lifts, or to operate the lift in use.
  • Fig. 1 is a side view of a lift in the retracted state
  • Fig. 2 is a side view of the lower part of an extended lift
  • Fig. 3 is a side view of the upper part of an extended lift
  • Fig. 4 is a side view of the lift shown in Figure 1 during transport;
  • FIG. 5 shows a side view of a further embodiment of a lifting platform in the retracted state
  • FIG. 6 shows a side view of the lower part of the embodiment according to FIG. 5 with the lifting platform extended;
  • FIG. 7 shows a side view of a further embodiment of a lifting platform in the retracted state
  • Fig. 8 is a side view of another embodiment of a scissors lift mechanism
  • FIG. 9 is an end view of another embodiment of a lift
  • FIG. 10 is a side view of that shown in FIG.
  • Ways to carry out the invention 1 shows a first exemplary embodiment of a lifting platform 1 in the retracted state, the lifting platform 1 comprising a subframe 3, a platform 2 and a scissor lift mechanism 4 arranged therebetween.
  • the subframe 3 comprises two spaced apart in the illustrated embodiment
  • Attachment points 3a which form a rotation axis for scissors elements 5.6.
  • the subframe 3 also includes a left wheel 3b and right foot 3i, both of which rest on a flat surface.
  • the subframe 3 also comprises aperssshai sion 3c with a mounting point 3d, designed as a rotation axis, on which a weight 9 is rotatably supported.
  • the subframe 3 comprises on the right side an attachment point designed as a rotation axis 3f, on which a handle 3e is rotatably mounted.
  • the platform 2 comprises two attachment points 2a, which are shown only schematically, but which are firmly connected to the platform 2, and which form an axis of rotation for scissor elements 7,8.
  • the scissors lift mechanism 4 comprises a total of four scissor elements 5, 6, 7, 8 which are mutually rotatably mounted both on common axes of rotation 56, 57, 68, and, and which are also rotatably mounted about the axis of rotation 2a, 3a with respect to the sub-frame 3 or the platform 2.
  • This embodiment has the advantage that the scissors lift mechanism 4 in the contracted state has a very small height, so that on the one hand can easily be ascended to the platform 2, and so on the other hand, the lift 1 during transport has a low overall height.
  • the scissors elements 5, 6, 7, 8 are designed as telescopic elements, which means that the scissor elements 5, 6, 7, 8 are each a first and a second scissor element part 5a, 5b; 6a, 6b; 7a, 7b; 8a, 8b, which are telescopically displaced in the direction of displacement A mutually.
  • the scissors lift mechanism 4 is configured in a particularly advantageous embodiment with respect to a plane passing through the attachment points 57 and 68 symmetrical plane, so that the upper scissor elements 7 and 8 are designed as telescopic elements, with a first and a second scissor element part 7a, 7b; 8a, 8b, which are telescopically displaced in the direction of displacement A mutually.
  • the pivot points 57, 68 and 78 it would be also possible only to provide the scissor elements 5 and 6 or the scissor elements 7 and 8 with a telescopic element.
  • the telescopic element has the advantage that the subframe 3 or the platform 2 can be made relatively short and still a large maximum lifting height is possible, especially if, as shown in Figures 2 and 3, a total of only 4 scissor elements fifth , 6, 7, 8 are used.
  • the use of a total of only 4 scissors elements 5, 6, 7, 8 has the advantage that the platform 2 is held particularly stable with respect to the subframe 3.
  • the lifting platform 1 could also include a plurality of such, successively arranged scissor lift mechanisms 4, in particular three, four or five, in order to achieve a particularly large lifting height with the platform 2.
  • the scissor elements 5, 6, 7, 8 preferably have a stop 5c, 6c, 7c, 8c to limit the displacement of the first scissor element part 5a, 6a, 7a, 8a to the hinge part 5f, 6f, 7f, 8f.
  • FIG. 2 shows a lifting platform 1 whose two scissor elements 5, 6 have a common axis of rotation 56, wherein each scissor element 5, 6 can be rotated on a common subframe 3 at mutually spaced rotary axes 3 a is mounted, and wherein the mutually telescopically displaceable portion of the first and second scissors element part 5a, 5b; 6a, 6b are arranged between the common axis of rotation 56 and the axes of rotation 3a, wherein the second scissor element part 5b, 6b is connected to the axis of rotation 3a.
  • a connecting means 5g, 6g attached to the subframe 3, which is connected to the first scissor element part 5a, 6a, and which limits in particular the maximum possible stroke of the telescopic element.
  • the connecting means 5g, 6g may for example be designed as a rod which is rotatably mounted at an attachment point 5h, 6h, and which, for example, in the region of the axis of rotation 3a, rotatably and optionally also slidably mounted.
  • the connecting means 5g, 6g can be configured and arranged in a variety of ways, for example, as shown by dashed lines at 6g, as a flexible band which limits the maximum stroke of the telescopic element.
  • the connecting means 5g, 6g, 7g, 8g is particularly designed as a push rod to transmit a thrust force between the attachment points 2a, 2c, 3a, 3g, 3h and the locations 5h, 6h, 7h, 8h.
  • the telescopic element could also be arranged between the axis of rotation 56 and the axes of rotation 57 and 68.
  • Figure 4 shows the illustrated in Figure 1, the first embodiment of a lift 1 in the retracted state in a transport position.
  • the lift 1 is raised and held by a person on the handle 3e, wherein a counterweight 9 reduces the maximum required on the handle 3e lifting force, so that the lift 1 is very comfortable and with relatively low forces can be moved.
  • This easy movement is of particular importance when the lift 1 is operated by only one person.
  • the lift 1 can be relatively easily and especially quickly brought to a new location, parked, and the platform are extended again.
  • the inventive lift 1 is particularly well suited for use with frequently changing site.
  • Figure 5 shows a side view of a second embodiment of a lift 1 in the retracted state.
  • the platform 2, the scissors lift mechanism 4 and the mutual connection thereof are configured identically as shown in Figure 1.
  • the scissor elements 6 and 8 are shown in detail in FIG.
  • the scissor elements 5 and 7 are in the illustrated view behind the scissor elements 6 and 8 and are therefore not visible.
  • the course of the scissor elements 5,6,7,8 is parallel to the platform 2 or parallel to the plane on which the lift 1 is in the illustrated embodiment.
  • the subframe 3 consists of two separate parts 3k, each part comprising 3k wheels 3b.
  • FIG. 6 shows the scissors lift mechanism 4 in the extended state.
  • FIG. 7 shows a side view of a further embodiment of a lifting platform 1.
  • the embodiment according to FIG. 7 has a simple subframe 3 extending only in one plane.
  • the scissors lift mechanism 4, the platform 2 and also the pivot points 3a on the lower frame 3 are configured identically as shown in FIG.
  • the lift shown in Figure 7 is particularly suitable for example to be fixedly mounted to a place, or to be mounted, for example, on a vehicle such as a truck.
  • the telescopic element is pneumatically or hydraulically operated, and has in an advantageous embodiment, a pneumatic or hydraulic piston with cylinder to effect the change in length of the scissor element 5,6,7,8.
  • a pneumatic or hydraulic piston with cylinder to effect the change in length of the scissor element 5,6,7,8.
  • it is a variety of drives suitable to extend the lift and possibly drive together.
  • a pneumatic or hydraulic, in particular oil-hydraulic, device could be used to drive the telescopic element and an electrical device.
  • each telescopic element can be provided with an electric motor and a spiral rod driven by the electric motor, so that each telescopic element can be individually extended and retracted.
  • Telescope elements with electric motor controlled synchronously, so that synchronously extend or shorten.
  • FIG. 8 shows a further exemplary embodiment of a motor
  • Scissor lift mechanism 3 which is designed substantially similar to the scissor lift mechanism 4 shown in Figures 2 and 3, for which reason in particular the differences in the scissors lift mechanism according to Figures 2 and 3 will be described below. Identical objects are provided with the same reference numerals.
  • the mechanism according to FIG. 8 has a fastening point 3 a fixedly connected to the ground, which forms the base for the swivel joint 6 f.
  • the mechanism according to Figure 8 comprises a sliding bearing 3k, which is displaceable in the direction C in respect of the ground, wherein the sliding bearing 3k forms the basis for the swivel joint 5f.
  • the mechanism according to FIG. 8 has an attachment point 2a, which is fixedly connected to a platform 2 shown only symbolically, the attachment point 2a forming the base for the swivel joint 8f.
  • the mechanism according to FIG. 8 has an attachment point 2d which forms the basis for the swivel joint 7f.
  • the platform 2 comprises a sliding bearing 2e in which the attachment point 2d engages, so that the attachment point 2d with respect to the sliding bearing 2e or with respect to the platform 2 is slidably mounted in the direction of movement D.
  • a platform 2 another arrangement to be lifted could also be arranged, for example a lifting platform for a motor vehicle.
  • FIG. 8 could also be arranged on another base, for example on a vehicle, in that the base U forms, for example, part of a vehicle frame.
  • the mechanism according to FIG. 8 could, for example, also be arranged on the chassis 3 shown in FIG. 2, the mechanism then being fixedly connected to the chassis 3 via the fastening point 3 a, and the sliding bearing 3 k being displaceably mounted in the movement direction C with respect to the chassis 3.
  • the scissors lift mechanism 4 comprises scissor elements 5, 6, 7, 8 which are mutually rotatably mounted both on common axes of rotation 56, 57, 68, and at fastening points 2 a, 2 d, 3 a, 3 k, including axes of rotation 5 f, 6 f, 7 f , 8f are rotatably mounted with respect to a subframe 3, a platform 2 or a base such as a bottom U, wherein the scissor elements 5,6,7,8 as
  • Telescope elements are configured and in each case a first and a second scissors element part 5a, 5b; 6a, 6b; 7a, 7b; 8a, 8b, which are telescopically mutually displaceable, wherein all scissors elements 5,6,7,8 are designed as telescopic elements, wherein the scissors lift mechanism 4 has at least four scissors elements 5,6,7,8, wherein each two scissor elements 5,6; 7.8 at a crossing point a common axis of rotation 56; 78, each scissor element 5, 6, 7, 8 over the second scissor element part 5b, 6b, 7b, 8b at an attachment point 2a, 2d, 3a, 3k comprising a rotation axis 5f, 6f, 7f, 8f is rotatably mounted, wherein each two first scissors element parts 5a, 6a, 7a, 8a via a common axis of rotation 57; are rotatably connected to each other, and wherein the mutually telescopically displaceable portion of the
  • Attachment points 2a, 2d, 3a, 3k a connecting means 5g, 6g, 7g, 8g is arranged, which with the first scissor element part
  • the drive device comprises three linear drives 10b, Ib, 12b, which each drive a rod 10a, I Ia, 12a.
  • the two linear drives I Ib, 12b are fixedly connected to the plate 13, wherein the plate 13 with the
  • Rotary shaft 56 is connected and is rotatably supported with respect to the scissor elements 5 and 6.
  • the rods 12a and 11a and the linear actuator 10b are connected to a plate 14.
  • the rod 10a is rotatably connected at one end to the attachment point 3a and slidably mounted at the other end in the linear drive 10b.
  • the drive device shown is configured such that in the retracted state, the axis of rotation 56 comes to lie approximately in the position designated by 56 ', so that the scissor element. 5 is completely retracted, as shown schematically for example in Figure 7.
  • the drive device shown in Figure 8 is to be considered only as an exemplary embodiment.
  • the drive device can be configured in a multiplicity of different embodiments and could be designed, for example, as a hydraulic, pneumatic or electric drive.
  • FIG. 10 shows a side view of a further exemplary embodiment of a lifting platform 1
  • FIG. 9 shows an end view of the lifting platform 1 shown in FIG. 10 from the viewing direction B.
  • Embodiment was taken to ensure that the platform 2 is very easily accessible in the lower position by the platform bottom 2g comes to lie very deep.
  • This arrangement of the platform 2 is achieved in that, as shown in Figure 9, two scissor lift mechanisms 4 are arranged laterally of the platform 2, so that the platform 2 is located between the two scissors lift mechanisms 4.
  • the position of the axis of rotation 3a thus determines how deep the platform 2 can be lowered relative to the ground U.
  • the diameter of the wheels 3b correspondingly small, it is for example possible that the distance between the bottom U and the platform bottom 2g, for example in the range between 5 cm and 30 cm, preferably between 10 cm and 20 cm.
  • This arrangement of the platform floor 2g with respect to the underground U allows a very comfortable climbing the
  • Movement direction D slidably connected to the platform 2.
  • the scissor lift mechanism 4 shown in Figure 8 would be connected in the illustrated in Figure 10 lift 1 such that the axis of rotation 3a of the left wheel arranged 3b serves as an attachment point for the joint 6f and the scissor element 6, and that the axis of rotation 3a of the right wheel arranged 3b serves as an attachment point for the joint 5f and the scissor element 5.
  • the arrangement of the scissor elements 5, 6, 7 and 8 can be seen schematically, with the scissor elements 5 and 7 being arranged directly on the side of the platform 2, and the attachment 2 d designed as a short rod, which is connected to the scissor element 7 is slidably mounted in the side wall of the platform 2.
  • the two further scissors elements 6 and 8 are arranged, which are connected to the wheels 3b and the platform 2 as described above.
  • the scissor lift mechanism 4 arranged on the left in FIG. 9 is shown from the viewing direction indicated by A in FIG. 8, wherein the scissors lift mechanism 4 in FIG. 9, unlike FIG. 8, is completely folded up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Handcart (AREA)

Abstract

Une plate-forme de levage (1) donnée à titre d’exemple comprend un cadre inférieur (3), une plate-forme (2) et un mécanisme élévateur à ciseaux (4) intercalé, le mécanisme élévateur à ciseaux (4) comprenant des éléments de type ciseaux (5,6,7,8), qui sont logés sur des axes de rotation (56,57,68,78) communs de façon à pouvoir tourner réciproquement et qui sont également logés sur un axe de rotation (2a,3a) de façon à pouvoir tourner par rapport au cadre inférieur (3) ou à la plate-forme (2), les éléments de type ciseaux (5,6,7,8) étant conçus comme des éléments télescopiques et présentant respectivement une première et une seconde partie d’éléments à ciseaux (5a,5b; 6a,6b; 7a,7b; 8a,8b), qui peuvent coulisser de façon télescopique les unes par rapport aux autres.
EP09807943A 2008-08-20 2009-08-20 Plate-forme de levage Not-in-force EP2318301B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09807943A EP2318301B1 (fr) 2008-08-20 2009-08-20 Plate-forme de levage

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08162712A EP2157042A1 (fr) 2008-08-20 2008-08-20 Elévateur
EP09807943A EP2318301B1 (fr) 2008-08-20 2009-08-20 Plate-forme de levage
PCT/EP2009/060761 WO2010020670A1 (fr) 2008-08-20 2009-08-20 Plate-forme de levage

Publications (2)

Publication Number Publication Date
EP2318301A1 true EP2318301A1 (fr) 2011-05-11
EP2318301B1 EP2318301B1 (fr) 2012-07-25

Family

ID=40278911

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08162712A Withdrawn EP2157042A1 (fr) 2008-08-20 2008-08-20 Elévateur
EP09807943A Not-in-force EP2318301B1 (fr) 2008-08-20 2009-08-20 Plate-forme de levage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP08162712A Withdrawn EP2157042A1 (fr) 2008-08-20 2008-08-20 Elévateur

Country Status (3)

Country Link
EP (2) EP2157042A1 (fr)
DK (1) DK2318301T3 (fr)
WO (1) WO2010020670A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105544957B (zh) * 2016-01-28 2017-12-22 安徽马钢工程技术集团有限公司 一种用于水平架空管道施工的活动脚手架及其施工方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2084543B (en) * 1980-10-02 1985-06-26 Kishi Mitsuhiro Elevating platforms
JPS60118599A (ja) * 1983-11-29 1985-06-26 株式会社彦間製作所 高所昇降装置
NL9001309A (nl) * 1990-06-08 1992-01-02 Jean Marie Leonardus Willems Schaarinrichting alsmede van dergelijke schaarinrichtingen voorziene hefinrichting.
JPH0825717B2 (ja) * 1991-08-30 1996-03-13 株式会社ジャパニック 昇降装置の同期機構
US5390760A (en) 1994-04-12 1995-02-21 Upright, Inc. Safety guard for scissor lift
DE29622687U1 (de) * 1996-10-18 1997-06-19 Haar, Joachim de, 73342 Bad Ditzenbach Scherenhubwagen
DE202004007438U1 (de) * 2004-05-04 2005-09-15 Kd Gmbh Sondermaschb Scherenhubtisch
KR100674217B1 (ko) * 2005-09-08 2007-01-24 하태홍 변속장치가 구비된 유체 펌핑용 실린더 장치
US20070187184A1 (en) 2006-02-10 2007-08-16 Nasuti Michelle L Scissors lift utility tray assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010020670A1 *

Also Published As

Publication number Publication date
WO2010020670A1 (fr) 2010-02-25
EP2157042A1 (fr) 2010-02-24
EP2318301B1 (fr) 2012-07-25
DK2318301T3 (da) 2012-10-29

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