EP0957062A2 - Plate-forme de levage pour véhicules avec une tringlerie pour réduire l' effort de levage au début du déploiement - Google Patents

Plate-forme de levage pour véhicules avec une tringlerie pour réduire l' effort de levage au début du déploiement Download PDF

Info

Publication number
EP0957062A2
EP0957062A2 EP99109616A EP99109616A EP0957062A2 EP 0957062 A2 EP0957062 A2 EP 0957062A2 EP 99109616 A EP99109616 A EP 99109616A EP 99109616 A EP99109616 A EP 99109616A EP 0957062 A2 EP0957062 A2 EP 0957062A2
Authority
EP
European Patent Office
Prior art keywords
linkage
lever
ramps
linkage element
carriage
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
EP99109616A
Other languages
German (de)
English (en)
Other versions
EP0957062A3 (fr
EP0957062B1 (fr
Inventor
Giuliano Vignoli
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.)
Giuliano Srl
Original Assignee
Giuliano Srl
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 Giuliano Srl filed Critical Giuliano Srl
Publication of EP0957062A2 publication Critical patent/EP0957062A2/fr
Publication of EP0957062A3 publication Critical patent/EP0957062A3/fr
Application granted granted Critical
Publication of EP0957062B1 publication Critical patent/EP0957062B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • B66F7/0666—Multiple scissor linkages vertically arranged
    • 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
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated

Definitions

  • the present invention relates to a linkage with reduced starting load for moving the ramps of compact auto lifts for motor vehicles.
  • Said auto lifts can, according to requirements, be installed either so as to fully retract into adapted pits provided in the floor surface or so as to lay flat directly thereon.
  • said cylinders are in fact arranged so that when the ramps are fully lowered the cylinders lie practically horizontally.
  • prior art includes several provisions which allow, by using the small clearance between the floor surface and the floor pan of the vehicle, to make one end of the cylinders travel for a first extent, equal to the clearance, by rotating on a vertical plane which substantially coincides with the axis of said cylinders, so that they are substantially not loaded along said extent and so that at the same time the rotation of one end causes the eccentricity that is necessary to provide a lever arm which then allows to generate a lifting moment sufficient to overcome the total load.
  • crank systems which, being variously articulated to each other, dynamically move the fulcrum points at the beginning of the expansion stroke of the cylinders that move the ramps.
  • crank systems are complicated to provide in practice, since they are composed of a considerable number of levers and joints, all of which must accordingly be sized adequately to overcome the loads and, most of all, must be able to be accommodated, folded and retracted, when the ramps are lowered completely.
  • the aim of the present invention is to solve the above problem of the prior art by providing a linkage with reduced starting load for moving the ramps of compact auto lifts which is simple to provide, safe in operation, and substantially compact with respect to conventional ones.
  • a linkage with reduced starting load for moving the ramps of compact auto lifts characterized in that it comprises a base carriage which can slide at floor level on a corresponding footing and has a preset horizontal stroke, an end of a fluid-actuated actuator and a contiguous end of a linkage element being respectively coarticulated to said carriage, the length of said actuator being axially variable, said linkage element having eccentric means for the partial rotation of said linkage element on a vertical plane, the opposite end of said linkage element being in turn slidingly articulated in a hinge-like manner, by way of corresponding articulation means, to the body of a lever for lifting the corresponding ramp by contact, the opposite end of said actuator being articulated to a rod-like member which composes a pantograph structure for lifting said ramps.
  • the reference numeral 1 schematically designates one of the ramps of an auto lift.
  • a corresponding linkage 3 for moving the ramps 1 with a reduced starting load is mounted in parallel to each lattice.
  • the linkage 3 essentially comprises a base carriage 4 which can slide at floor level on a footing 5 which usually coincides with the footing of the corresponding lattice frame and has a preset horizontal stroke.
  • a fluid-actuated actuator with axially variable length constituted by a cylinder 6 in the specific case, and a contiguous end of a linkage element 7 provided with eccentric means adapted to produce a partial rotation thereof in a vertical plane, are respectively coarticulated to the carriage 4.
  • the opposite end of the linkage element 7 is in turn slidingly articulated by means of a hinge 7a, with corresponding articulation means 9, to the body of a lever 10 for lifting the corresponding ramp 1 by contact.
  • the opposite end of the cylinder 6 is articulated in 6a to one of the rod-like members 2 that composes, as mentioned, the usual pantograph-like structure.
  • the eccentric means 8 are constituted by a concave portion 8a with a circular arc-like profile which blends with a straight portion formed in the lower median portion of the linkage 7; the concave portion 8a is adapted to slide and mate, by resting, with a corresponding wing 11 that protrudes upward from the footing 5 and has, in an upward region, a adapted convex profile 11a which is complementary to the concave portion 8a; the base of the lever 10 is also articulated to the wing.
  • the articulation means 9 are constituted by the hinge 7a, which is slidingly guided in a corresponding slot 12 having a preset length and provided in the lever 10.
  • the slot 12 is arranged diagonally with respect to the longitudinal axis of the lever 10 in which it is formed, and its end that lies distally with respect to the base of said lever 10 is directed upward.
  • the cylinders 6 When movement begins, the cylinders 6 begin their extension step and gradually move the carriages 4 in the guides 4a that control their overall stroke.
  • the levers are in contact, through their upper ends, with the lower faces of the ramps 1 and transmit thereto the gradual lifting induced by the linkage elements 7.
  • the carriages 4 reach the maximum extent of their stroke and the articulation points of the upper ends of the cylinders 6 gradually rise, generating the necessary lever arms, designated by B in Figure 4, which allow, thanks to a subsequent further extension of the cylinders 6, to applying the lifting moment that is required to easily move upward the ramps 1 loaded with a motor vehicle.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
  • Linear Motors (AREA)
EP99109616A 1998-05-14 1999-05-14 Plate-forme de levage pour véhicules avec une tringlerie pour réduire l' effort de levage au début du déploiement Expired - Lifetime EP0957062B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998MO000104 IT1304631B1 (it) 1998-05-14 1998-05-14 Biellismo di movimentazione a spunto agevolato delle corsie di pontisollevatori a basso ingombro per autoveicoli
ITMO980104 1998-05-14

Publications (3)

Publication Number Publication Date
EP0957062A2 true EP0957062A2 (fr) 1999-11-17
EP0957062A3 EP0957062A3 (fr) 2001-03-21
EP0957062B1 EP0957062B1 (fr) 2004-07-28

Family

ID=11386644

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99109616A Expired - Lifetime EP0957062B1 (fr) 1998-05-14 1999-05-14 Plate-forme de levage pour véhicules avec une tringlerie pour réduire l' effort de levage au début du déploiement

Country Status (3)

Country Link
EP (1) EP0957062B1 (fr)
DE (1) DE69918896T2 (fr)
IT (1) IT1304631B1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533980A (en) * 1946-01-04 1950-12-12 Weaver Engineering Co Lifting and lowering appliance
US2937852A (en) * 1956-10-29 1960-05-24 Jesse E Clarke Lift device
EP0286615A1 (fr) * 1987-04-10 1988-10-12 Toivo Mäkelä Cric articulé
EP0372246A1 (fr) * 1988-12-06 1990-06-13 Jlg Industries, Inc. Appareil de levage d'une plate-forme

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533980A (en) * 1946-01-04 1950-12-12 Weaver Engineering Co Lifting and lowering appliance
US2937852A (en) * 1956-10-29 1960-05-24 Jesse E Clarke Lift device
EP0286615A1 (fr) * 1987-04-10 1988-10-12 Toivo Mäkelä Cric articulé
EP0372246A1 (fr) * 1988-12-06 1990-06-13 Jlg Industries, Inc. Appareil de levage d'une plate-forme

Also Published As

Publication number Publication date
ITMO980104A1 (it) 1999-11-14
DE69918896T2 (de) 2004-12-16
EP0957062A3 (fr) 2001-03-21
DE69918896D1 (de) 2004-09-02
EP0957062B1 (fr) 2004-07-28
IT1304631B1 (it) 2001-03-28

Similar Documents

Publication Publication Date Title
US5676515A (en) Low floor vehicle ramp
US4180366A (en) Lift assembly for transit vehicles
US4899987A (en) Vehicle scissor lift
US8162093B2 (en) Body for a motor vehicle
US8234737B2 (en) Latch for a fold out ramp
US4022337A (en) Hoist mechanism for use in a vehicle such as a bus
US4114854A (en) Scissors lift work platform
US20030090081A1 (en) Passenger ingress and egress system for transit vehicle
US8250693B1 (en) Fold out ramp
US8375496B1 (en) Fold out ramp
US6981572B2 (en) Foldable access device
US8438683B1 (en) Sliding fold out ramp
US8635729B1 (en) Ramp assembly with tilt sensor
CA2077065A1 (fr) Rampe escamotabled pour porte laterale de fourgonnette
US7225898B2 (en) Lift
US5118246A (en) Elevating tailgate for vehicle and process of handling it
CN101332779A (zh) 尤其用于双门车辆的、能够向前移动的机动车辆座椅
JP4434540B2 (ja) 低レベルジャッキ
US4381899A (en) Wheelchair lift device
EP0957062B1 (fr) Plate-forme de levage pour véhicules avec une tringlerie pour réduire l' effort de levage au début du déploiement
US5613575A (en) Flat-structure lifting platform
US4299528A (en) Combination wheelchair lift and steps for vehicle doorways
CN104563709B (zh) 用于前盖的调整装置和相关的机动车
JPH07108925A (ja) プラットホーム用ステップ装置
JP5523845B2 (ja) 床下格納式昇降装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010809

AKX Designation fees paid

Free format text: DE FR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR

REF Corresponds to:

Ref document number: 69918896

Country of ref document: DE

Date of ref document: 20040902

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

ET Fr: translation filed
26N No opposition filed

Effective date: 20050429

REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1025554

Country of ref document: HK

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080723

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080529

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090602

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091201