[go: up one dir, main page]

WO2003004329A1 - Dispositif de levage - Google Patents

Dispositif de levage Download PDF

Info

Publication number
WO2003004329A1
WO2003004329A1 PCT/ZA2002/000109 ZA0200109W WO03004329A1 WO 2003004329 A1 WO2003004329 A1 WO 2003004329A1 ZA 0200109 W ZA0200109 W ZA 0200109W WO 03004329 A1 WO03004329 A1 WO 03004329A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft engagement
engagement formation
abutment surface
formation
axle
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.)
Ceased
Application number
PCT/ZA2002/000109
Other languages
English (en)
Inventor
Mark Charles Louw
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
Publication of WO2003004329A1 publication Critical patent/WO2003004329A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/005—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with rocking arm or sector
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
    • B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting

Definitions

  • This invention relates to a lifting device and more specifically to a jack used for the lifting of a vehicle axle in order to allow the removal and replacement of a wheel attached to the axle.
  • vehicle is used herein with reference to wheeled means of transport including drawn vehicles such as for example trailers, caravans and mobile homes, as well as motorised vehicles such as for example motor cars and quads.
  • Curved lifting devices which engage with an axle of a vehicle and which, when the vehicle is moved, partially rotate and lift the axle of the vehicle in order for a wheel attached to the axle to be lifted clear from the ground, are known.
  • a further problem associated with a device of this kind is that it often happens that when the vehicle is moved, the device does not rotate to lift the axle and merely scrapes along the surface upon which the wheel is running.
  • Another problem is that as the axles and wheels of various vehicles have different shapes and sizes the same lifting device cannot always be used with a range of different vehicles.
  • the invention provides a lifting device which includes a body, a shaft engagement formation on the body with which an axle of a vehicle is engageable, a curved abutment surface on the body which has a leading end, and a runner which is engaged with the leading end and which is movable relatively to the body.
  • the body may be of any appropriate material and is preferably made of metal or a hardened plastics material.
  • the body may be cam-shaped and may include a toe formation at the leading end to which the runner is attached.
  • the shaft engagement formation may be slotted and may include a load bearing member.
  • the load bearing member may be in the form of a half-section of a sleeve.
  • the shaft engagement formation is U-shaped.
  • the shaft engagement formation may be integral with the body but preferably the shaft engagement formation is movable relatively to the body.
  • the shaft engagement formation may be slidingly engageable with the body and may include fastening means to secure the shaft engagement formation to the body.
  • the abutment surface may extend between a first end and a second end of the body, which second end is spaced further away from the shaft engagement formation than the first end.
  • the abutment surface includes a plurality of gripping formations which may be in the form of teeth.
  • the runner includes at least one rotatable wheel and preferably the runner is spaced further away from the shaft engagement formation than the distance by which the abutment surface is spaced from the shaft engagement formation.
  • the lifting device may include a load spreading member extending from the body.
  • the load spreading member may be curved and may run parallel to the abutment surface.
  • the invention also extends to a lifting device which includes a body, a shaft engagement formation on the body which is engageable with an axle of a vehicle, a curved abutment surface on the body which has a first end and a second end which is spaced a greater distance away from the shaft engagement formation than the distance by which the first end is spaced away from the shaft engagement formation and a runner which is engaged with the second end and which is movable relatively to the body.
  • the lifting device includes a plurality of gripping formations between the first and the second ends.
  • the runner may include a rotatable wheel.
  • the shaft engagement formation may be movable relatively to the body.
  • the invention further extends to a lifting device which includes a body, a shaft engagement formation on the body which is engageable with an axle of a vehicle, a curved abutment surface on the body which has a plurality of gripping formations, a toe formation extending from the body and at least one rotatable wheel attached to the toe formation.
  • the shaft engagement formation may be movable relatively to the body.
  • Figure 1 is a perspective view of a lifting device or jack according to the invention
  • Figure 2, 3 and 4 are side views of the jack of Figure 1 in use;
  • Figure 5 is a sectioned side view of an alternative shaft engagement formation for use with the jack of Figure 1 ;
  • Figure 6 is a sectional side view of another alternative shaft engagement formation
  • Figure 7 is an exploded view of the shaft engagement formation of Figure 6; and Figure 8 is a sectioned side view of an alternative construction of an abutment surface of the jack of Figure 1.
  • Figure 1 illustrates a jack or lifting device 10 which has a body 12 which is generally cam- shaped with a shaft engagement formation 14 formed in the body 12 and a curved abutment surface 16 on an opposite side of the body 12.
  • the shaft engagement formation 14 is in the form of a U-shaped slot 18 in the body 12.
  • the slot 18 ends in a load-bearing member 20.
  • the load-bearing member 20 is in the form of a half-section of a sleeve which extends a short distance on either side of the body 12.
  • the shaft engagement formation 14 is dimensioned to receive an axle 21 of a vehicle 22. (See Figures 2, 3 and 4.)
  • the abutment surface 16 extends between a first end 24 and a second end 26 of the body 12.
  • the first end 24 is spaced a distance d from the shaft engagement formation 14 and the second end 26 is spaced a distance D from the shaft engagement formation 14.
  • the distance D is greater than the distance d.
  • a plurality of gripping formations 28 in the form of teeth are formed on the abutment surface 16.
  • a toe 30 extends from the body 12 at the second end 26 of the abutment surface 16.
  • a set of wheels 32A, 32B are attached to the toe 30 by a shaft 34.
  • the wheels 32 are rotatable on the shaft 34 and are thus movable relatively to the body 12.
  • the wheels 32 are spaced a distance X from the shaft engagement formation 14. The distance X is greater than the distance D and therefore the wheels 32 are spaced further away from the shaft engagement formation 14 than the abutment surface 16.
  • the body 12 is made from an appropriate metal material or is injection molded from a hardened plastics material.
  • the wheels 32 and axle 34 are of known construction and are also made from an appropriate metal or hardened plastics material.
  • Figures 2, 3 and 4 show how the jack 10 is used to lift the axle 21 of the vehicle 22 from a ground or floor 36 in order for a user (not shown) to remove a wheel 38 from the axle 21.
  • axle 21 is received within the shaft engagement formation 14 and the abutment surface 16 is placed on the floor 36.
  • Figure 3 shows the vehicle 22 being moved in the direction 40. This movement of the vehicle 22 causes the gripping formations 28 on the abutment surface 16 to grip on the floor 36. As the vehicle 22 is moved further in the direction 40 the jack 10 rotates about the axle 21 and the axle 21 and the wheel 38 are lifted in the direction 42 as a result of the cam-action of the body 12.
  • Figure 4 shows the jack 10 in a jacked position where the shaft 21 and wheel 38 are elevated a maximum distance from the floor 36. If the vehicle 22 is moved further in the direction 40, the wheels 32 run along the floor 36 and prevent the abutment surface 16 from remaining anchored to the floor 36 and thus prevent the jack 10 from being moved over-centre which would result in the axle 21 and wheel 38 falling from the jack 10.
  • the vehicle 22 is secured from further movement by any appropriate means and the wheel 38 can then be removed and replaced in the normal way.
  • Figure 5 shows an insert 49 with a shaft engagement formation 50 according to a different form of the invention.
  • Reference numerals similar to those employed in connection with Figures 1 to 4, are used to indicate similar components and only the differences between the shaft engagement formation 14 and the insert 49 are described.
  • the body 12 has a substantially square slot 52.
  • the insert 49 has a groove formation 54 and the slot 52 and the groove formation 54 are complementary so that the insert 49 can be slidingly engaged with the body 12.
  • Grub screws 56A, 56B on the insert 49 are used to secure the insert 49 to the body 12.
  • the shaft engagement formation 50 is similar to the shaft engagement formation 14.
  • the shaft engagement formation 50 can be varied on different inserts 49. In order to use the jack 10 together with different axles only the insert 49 thus needs to be replaced.
  • insert 49 can also be used to compensate for variable distances between the axles of vehicles and the floor and to accommodate axles of various cross-sectional shapes.
  • Figure 6 and 7 show an alternative construction of inserts 70 which are slidingly fitted into a slot 71 which is similar to the slot 18 of the shaft engagement formation 14.
  • the inserts 70 comprise a first insert 70A which is slidingly fitted to the slot 71 and a second insert 70B which is slidingly engaged with the first insert 70A.
  • a spacer 72 is trapped in the slot 71 between the first insert 70A and the body 12.
  • the first insert 70A has two flanges, 74, 76 which overlap onto the body 12. These flanges 74, 76 retain the first insert 70A in the slot 71 but allow rotational movement of the first insert 70A relatively to the body 12 and also for the sliding removal of the first insert 70A from the slot 71.
  • the flanges 74, 76 further trap the spacer 72 between the first insert 70A and the body 12.
  • the first insert 70A has a semi-circular external profile or abutment surface 78 and the spacer 72 has a complementary saddle 80 on which the abutment surface 78 rides. This allows rotational movement of the first insert 70A on the spacer 72 relatively to the body 12.
  • the second insert 70B has a square-shaped external profile or abutment surface 82 and flanges 84, 86 similar to the flanges 74, 76.
  • the second insert 70B slidingly engages with the first insert 70A and is held captive on the first insert 70A as a result of the square-shaped external profile 72 and the flanges 84, 86.
  • a square-shaped shaft engagement formation 88 is defined by the second insert 70B.
  • the jack 10 can be used with vehicles of various shapes and sizes of axles.
  • the first insert 70A will rotate relatively to the body 12 as the axle is lifted by the jack 10 in the manner described.
  • Figure 8 shows a curved load spreading member 60 attached to the body 12 which runs parallel with the abutment surface 16. Although only one side of the body 12 is shown it should be understood that the load spreading member 60 extends on both sides of the body 12.
  • the load spreading member 60 extends from the body in the form of a flange.
  • the load spreading member 60 spreads the load on the abutment surface 16 if the jack 10 is used on a soft surface floor 36. Thus, if the abutment surface 16 is forced into the soft floor 36 the load spreading member 60 will come into contact with the floor 36 and will increase the contact area between the floor 36 and the jack 10.
  • the width W of the gripping formations 28 shown in Figure 1 can be increased to spread the load on the jack 10 and to provide a broader base on which the jack 10 can stand.
  • the jack 10 can, depending on its application, be made in various sizes and from various materials and that the thickness of the body 12 may vary depending on requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

L'invention porte sur un dispositif de levage pour véhicule, ce dispositif comprenant un corps, un d'arbre mobile ménagé sur le corps et venant en contact avec un essieu du véhicule, une surface d'aboutement courbe du corps comportant une pluralité d'éléments de préhension, une patte s'étendant à partir du corps et au moins une roue rotative reliée à la patte.
PCT/ZA2002/000109 2001-07-04 2002-07-03 Dispositif de levage Ceased WO2003004329A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2001/5508 2001-07-04
ZA200105508 2001-07-04

Publications (1)

Publication Number Publication Date
WO2003004329A1 true WO2003004329A1 (fr) 2003-01-16

Family

ID=25589226

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2002/000109 Ceased WO2003004329A1 (fr) 2001-07-04 2002-07-03 Dispositif de levage

Country Status (1)

Country Link
WO (1) WO2003004329A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015181392A1 (fr) * 2014-05-30 2015-12-03 Aldebaran Robotics Outillage destiné à soulever un véhicule
WO2018138660A3 (fr) * 2017-01-25 2018-09-27 BEZUIDENHOUT, Stephan Dispositif de levage d'essieu

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1399691A (en) * 1920-09-07 1921-12-06 Frederick P Connors Vehicle-jack
GB244544A (en) * 1924-10-03 1925-12-24 James Walster Improvements in and relating to lifting jacks
FR747820A (fr) * 1932-12-09 1933-06-24 Appareil de levage automatique pour véhicule automobile
FR755854A (fr) * 1932-05-24 1933-12-01 Dispositif de soulèvement pour véhicule
FR758568A (fr) * 1933-07-18 1934-01-19 Appareil pour soulever les véhicules
FR759428A (fr) * 1934-02-01
GB430181A (en) * 1934-01-10 1935-06-14 James Allen Improvements in or relating to means for lifting wheels of motor vehicles
US2201373A (en) * 1938-09-28 1940-05-21 Miniconi Henri Jules Automatic jack device for automobiles
FR926245A (fr) * 1946-05-03 1947-09-25 Crics pour tous véhicules automobiles
FR928194A (fr) * 1946-05-15 1947-11-20 Dispositif de levage pour véhicule

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR759428A (fr) * 1934-02-01
US1399691A (en) * 1920-09-07 1921-12-06 Frederick P Connors Vehicle-jack
GB244544A (en) * 1924-10-03 1925-12-24 James Walster Improvements in and relating to lifting jacks
FR755854A (fr) * 1932-05-24 1933-12-01 Dispositif de soulèvement pour véhicule
FR747820A (fr) * 1932-12-09 1933-06-24 Appareil de levage automatique pour véhicule automobile
FR758568A (fr) * 1933-07-18 1934-01-19 Appareil pour soulever les véhicules
GB430181A (en) * 1934-01-10 1935-06-14 James Allen Improvements in or relating to means for lifting wheels of motor vehicles
US2201373A (en) * 1938-09-28 1940-05-21 Miniconi Henri Jules Automatic jack device for automobiles
FR926245A (fr) * 1946-05-03 1947-09-25 Crics pour tous véhicules automobiles
FR928194A (fr) * 1946-05-15 1947-11-20 Dispositif de levage pour véhicule

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015181392A1 (fr) * 2014-05-30 2015-12-03 Aldebaran Robotics Outillage destiné à soulever un véhicule
FR3021643A1 (fr) * 2014-05-30 2015-12-04 Aldebaran Robotics Outillage destine a soulever un vehicule
WO2018138660A3 (fr) * 2017-01-25 2018-09-27 BEZUIDENHOUT, Stephan Dispositif de levage d'essieu

Similar Documents

Publication Publication Date Title
EP0391870B1 (fr) Rampe de chargement
CA2307801C (fr) Mecanisme de transport
US4368553A (en) Portable ramp
US11618418B2 (en) Lightweight wheel chock
AU744556B2 (en) Supporting device for fixing
US7249738B2 (en) Rolling bracket assembly
US20060016645A1 (en) Combination tandem axle wheel chock and trailer tongue stand
US5899650A (en) Slab cart
US7544035B1 (en) Manhole cover lift
US7093840B2 (en) Multi-purpose combined ladder/cart assembly
WO2003004329A1 (fr) Dispositif de levage
EP0553086A1 (fr) Chariot a fourche auto-elevateur
US5781954A (en) Extension ramp for use in combination with a car ramp
US4290618A (en) Hand truck stair tread engaging device
US7134676B2 (en) Self-leveling wheelbarrow
US5253881A (en) Hand truck stair crawler assembly
US6098761A (en) Locking assembly for wheeled cargo transportation cart
US9855878B1 (en) Load-supporting drive over wheel chock for a trailer bed
US5248540A (en) Ramp pad
JP2005313873A (ja) ハンドカート
US20040226780A1 (en) Wheel chock
US20010038185A1 (en) Wheeled system for transport of heavy loads
US9382104B2 (en) Trailer lift and storage apparatus
KR200411721Y1 (ko) 리프팅 기능을 갖는 화물 운반용 손수레
AU740159B2 (en) Vehicle jack

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PH PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT RULE 69(1) EPC (FORM 1205A OF 15-06-2004)

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP