Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
  • B65G7/00—Devices for assisting manual moving or tilting heavy loads
  • B65G7/02—Devices adapted to be interposed between loads and the ground or floor, e.g. crowbars with means for assisting conveyance of loads
  • B65G7/04—Rollers
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
  • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
  • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
  • E01F9/70—Storing, transporting, placing or retrieving portable devices
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
  • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
  • F16M11/02—Heads
  • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
  • F16M11/041—Allowing quick release of the apparatus
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
  • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
  • F16M11/02—Heads
  • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
  • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
  • F16M11/20—Undercarriages with or without wheels
  • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
  • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
  • F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
  • F16M2200/00—Details of stands or supports
  • F16M2200/06—Arms
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
  • F16M2200/00—Details of stands or supports
  • F16M2200/08—Foot or support base

Definitions

• the present invention relates to a method and mobile device for lifting and moving a load placed on a surface.
• the technical sector of the invention is the field of the manufacture and use of mobile lifting devices for moving heavy loads.
• the main application of the invention is to lift and move a plinth of steel or concrete sole type placed on the ground and from which a mast itself supporting at its other end any type of object is thus held vertically On the ground ; it may for example be the feet of umbrellas, but also the feet of sign posts, etc.
• said bases or plates must be heavy enough on the one hand, with in addition dimensions in the ground plane which can be quite large, offer good stability, on the other hand ensure rigidity and significant resistance to bending, and finally for any application avoid that any person can move them too easily; moreover in certain uses where one wishes to avoid that this constitutes an obstacle to movement on the ground, whether on foot or with wheels, the thickness of these bases is fairly low and does not include any possibility of lateral grip. . It is therefore very difficult, due to the weight, dimensions and size of such loads, to move them to bring them from a storage point to their place of use or simply to move them away from a place of use. to another.
• Such a device is in fact integrated inside the base of the parasol to be moved and comprises a mobile system provided with wheels retracted in the rest position and coming to bear on the ground when the mobile system is maneuvered in order to move said base, thanks to a pivot axis secured to the frame thereof;
• this mobile system comprises at least two wheels, each of which is in free rotation about another axis, a lifting element located at one end of this mobile part and blocked in its upward movement by a retaining element or point of support of the base frame, and finally a lever integral with said system at a point located at an intermediate position between the pivot axis and the end of the lifting element: thus, a force exerted downwards on the lever makes it possible to lift, by pressing under said retaining element, the base and the total load relative to said wheels resting on the ground, to secure and move the assembly to another location by rolling the wheels on the ground .
• Such a device is thus fairly well suited to thick bases, such as concrete, of parasols, although the arrangement of the support and rotation points require an initial effort which can be quite significant, and immobilize the load as soon as it tips over. , which is blocked both by pressing directly under its retaining element and by the pivoting axis of the mobile device, this may explain this.
• This is however very simple because it does not include complex and articulated mechanical systems unlike other patents meeting the same objective such as that No. CH 682 975 which includes a rack and pinion type mechanism, difficult to steer and quite bulky.
• Various other devices are known which make it possible to also lift and move bulky or heavy loads thanks to chassis having tilting arms and support arms on which the load is generally placed, such as for example that described on request.
• the problem is to be able to lift and move with a single device a load placed on the ground, which can be of any thickness even small, quite bulky and heavy, without handling means or complex mechanical parts, with a minimum of efforts and a tilting ensuring a progressive assumption of responsibility allowing the operator a better dosage of his effort, while controlling its lifting and said tilting, and making it possible to ensure the stability of the whole once completely raised from the ground.
• the device which is the subject of patent application No. WO 95/27169 previously filed by Mr. ANDREY, does not allow this problem to be entirely resolved since, on the one hand, it is supported under part of the base to lift it (this is therefore not not applicable for a steel plate for example, placed on the ground, even in the case of an application to a parasol base) and on the other hand, as indicated previously, it immobilizes the base directly in rotation relative to the device mobile, thus increasing in particular the tilting forces.
• a solution to the problem posed is a method for lifting and moving a load, the lower part of which is placed on a surface, using at least one mobile device, comprising at least one support means which can move on said surface.
• the support means or means of the device are positioned so that they are in contact with the surface when the device maneuvered by the lever is presented so that its lifting element cooperates with the lifting point
• this lever is then lowered, which rotates the device about its axis, to lift at least part of the load relative to said surface, by its lifting point driven by the lifting element,
• said load comprises a foot constituted by a support plate on said surface
• a cut is made in this plate according to dimensions at least equal to those of the projection, on this surface, of the outer casing of the lower part of the device, comprising at least the support means or means, the support arm (s), the lower part of the chassis and the end of the lever secured to it, and at least the following are available lifting point at the edge of this cut; the device is placed in this cutout and the load is raised, the foot of which then surrounds the lower part of the device.
• a mobile device when it is not possible to cut said foot from the load, comprising at least two support points arranged in a plane passing through the tilting axis, supported by lateral arms spaced apart by a distance at least equal to one of the dimensions of the load in the plane of the surface and the assembly of the other elements of which is situated at a height relative to this surface, at least greater than that of the lower part of the load above which the device is positioned to lift it.
• the device making it possible to carry out the lifting process described above may or may not be removable with respect to the load to be lifted, but in any case is articulated above the lower part of the latter when it is 'acts of a support foot of an aerial structure or completely above the load itself when it is a question of plates alone.
• the load to be lifted is a plate or other flat object having a weight of the order of 150 to 240 kilos and / or an area too large to be lifted by a single mobile device
• at least two lifting points can be placed on said load distributed around the periphery thereof and at least two devices according to the invention are presented, each at one of said lifting points and the load is raised by tilting the two devices by their respective leverage.
• the result is new methods and devices for lifting and moving a load placed on a surface using a mobile device responding to the problem posed and without having the drawbacks of the devices known to date.
• the lifting method according to the invention is very simple since it uses the known multiplier effect of the lever arms, thanks to a lifting arm shorter than that of tilting on which the operator will press to lift the load. , even heavier than it, according to a principle therefore perfectly known and a process requiring no complex device.
• the stability of the load which, in the main applications of the invention, is quite bulky and heavy, first one side is lifted by tilting it by pressing its other side held against the ground, then all of its heaviest lower part; it is then kept suspended in a pendulum fairly close to the ground, immobilizing it by means of a stop of the device if necessary; in particular, this stop is all the more necessary when using a single device and depending on the offset of the lifting point relative to the center of gravity of the load, which of course causes said tilting of the whole of this below, but which is therefore checked as indicated above and explained below.
• Figure 1 is a side view of an example of a removable device according to the invention ready to be used for lifting a load whose foot placed on a surface has been cut for this.
• Figure 2 is a top view of the assembly of Figure 1 which shows a sectional view along I / I 'of the load.
• Figure 3 is a top view of the same embodiment of the device in place on the load to be lifted.
• FIG. 4 is a sectional view along IV / IV of FIG. 3.
• FIG. 5 is a top view of another device according to the invention in the same position as that of FIG. 3.
• FIG. 6 is a sectional view along VI / V of FIG. 5.
• Figure 7 is a top view of another device according to the invention, placed on a load foot having no cutout.
• FIG. 8 is a partial view of the rear along the axis of the device in FIG. 7.
• Figure 9 is a sectional view of the assembly of the device and the load of Figure 7 along IX / IX '.
• Figures 10, 1 1 and 12 are views respectively in side section and in perspective of another example of a device according to the invention incorporated in a thick base of parasol type like those described in patent application FR 2718217 by the same inventor and to which we can refer.
• FR 2718217 a thick base of parasol type like those described in patent application FR 2718217 by the same inventor and to which we can refer.
• the mobile device 3 for lifting and moving a load 15 placed on a surface 11, comprises at least one support means 4, which is here represented by two wheels but only one could suffice re or in the form of a roll, on said surface 1 1 and each carried by a support arm
• the mobile device 3 further comprises at least one lifting element 7 located on the suppo rt arm 6 such that at one of its ends, as shown in the appended figures, which lifting element is a means for suspending said load 15, hanging from the latter by its lifting point 12 situated above its lower part 1; especially according to the preferred embodiment according to the invention, when said lifting element 7 having to cooperate with this lifting point 12 of the load 15 is not vertical to the center of gravity C thereof but offset from to it, and that only one device according to the invention is used for the same load, the device comprises at least one stop 8 situated behind said lifting element 7 on the same side with respect to it as the pivot axis 9 of the device.
• a load 15 consisting essentially of a support leg 1 consisting of a thick sheet but which could be any frame or frame, placed on a floor 1 1 horizontal and on which is fixed vertically a tube 2 which can be a mast support such as for a parasol, but also for traffic signs for example.
• the center of gravity C of the entire load with its parasol for example can be located above above the lifting element 12 but in all cases, during the lifting and displacement operation, the entire load will be suspended and lifted in pendulum by its lifting point 12.
• said support foot 1 to be lifted comprises a cutout 10 in which the lifting device is brought up by lifting it because it can be quite light as in Figure 1 or by rolling from the ground surface 1 1 on said support leg whose thickness is relatively small, until the support means 4 such as the wheels are again in contact, through the cutout 10, with the surface 11.
• said support foot 1 does not include a cutout and the mobile device 3 then necessarily has two support points 4 arranged in a plane passing through the tilting axis 9 supported by arms side 16 and separated by a distance at least equal to one of the dimensions of the load 15, preferably the smallest, such as in the width direction for a rectangle, as shown in Figure 7, in the plane of the surface 1 1; all of the other elements of the mobile device are situated at a height relative to this surface at least greater than that of the lower part 1 of said load 15 above which the device 3 is positioned to lift it.
• the stop 8 is located and connected to the other end of the support arm or arms 6, relative to the lifting element 7, which are also those 16 of the means of support 4, so that said pivot axis 9 is located at an intermediate position between the projection planes of the lifting element 7 of the stop 8 at the angle ⁇ formed by said support arms 6, 16 with said tilting lever 5, on an axis whose direction is that of said support arms 6, 16.
• said stopper 8 can be carried directly by the tilting lever 5.
• the chassis 13, 16 of the device is constituted in all the examples attached by:
• the arms 16 supporting the wheels 4, which, even if only one may suffice for relatively light loads, are preferably two free mounted along an axis of rotation XX 'at least parallel if not confused with the axis 9 of device tilting,
• lifting arms lifting 6 can be the same arms as the wheel supports 16.
• said device may include two lifting elements 7 spaced from one another and situated along the same axis YY 'parallel to the pivot axis 9, as shown in FIGS. 1 to 4.
• the device comprises two stops 8 spaced from one another or only one but of fairly wide range and located along the same axis ZZ 'parallel to the pivot axis 9 as shown in Figures 5 to 6; in this case, said stops 8 d, 8 2 are carried by supports 14 placed at the other end of the wheel support arms 16, opposite the end supporting the cross member 13 carrying itself in its middle of lifting element 7.
• the wheel support arms 16 being located laterally of course relative to the plate to be lifted 1, are independent of the lifting arm 6 which can be unique and then preferably located in the axis of the device, can therefore be in the extension of the tilting handle 5; it is then the assembly of the cross member 13 and of said lifting arm 6 which act directly as a stop for the support leg 1 to be lifted situated below.
• the lifting element 7 of the device according to the invention and the lifting point 12 secured to the load 15 to be lifted must of course cooperate with each other to ensure good attachment, such as respectively a ring or an axis for one and a bracket or a hook for the other, as shown in Figures 1 to 4, then requiring to tilt the device to slide the lifting element from below said lifting point 12 and engaging it; in the representation of FIGS. 7 to 9 where the relative tilting movement between the device 3 and the plate 1 is very limited, they can cooperate by engagement of the lifting element 7 which is slid horizontally for example in a constituent ring the lifting point 12; other combinations of lifting means can of course be used.
• the two support means 4 are wheels mounted free in rotation about said pivot axis XX '9
• other support means 4 can be used such as skates.
• FIGS. 10 to 12 another example of a device according to the invention is shown diagrammatically in the rest position in FIG. 10, and in the displacement position in FIG. 11.
• the load 15 to be moved here is a fairly thick base such as that of a parasol mast 2 and which can be made either of concrete or of rigid plastic then filled with sand or water, its lower surface 1 or sole resting on the ground 1 1.
• the mobile device 3 can then be incorporated into the thickness of said base 15: it retracts into a housing 17 provided for this in it, and is articulated around an axis 7, 12 which makes it integral with said base 15 and which constitutes both the element 7 and the lifting point 12 according to the invention. All the other elements of the device as shown in perspective in FIG. 12 have the same characteristics and functions as those described previously in the previous figures, to which we will therefore not return.
• the new feature of this embodiment is the relative arrangement of these various elements, in fact: the tilting lever 5 is located towards one end of the support arm 6, the pivot axis 9 which is also that of the wheel support 4 is located towards the other end of the support arm 6, and the lifting element 7, which is at the same time the hinge pin making the device integral with the base 15, is positioned between the two; the tilting lever 5, part 5 t of which forms an angle ⁇ with the support arm 6 and another part 5 2 forms the handle, comprises in its part penetrating into the base 15 the stop 8: after reciprocal tilting of said lever 5 towards bottom, and from base 15 upwards, by rotation around edge 1 ] on its downstream side and simultaneously by detaching from the opposite edge 1 2 on its upstream side (as in the previous embodiments, due to the compulsory offset in the embodiment of its figures 10 to 12 from the center of gravity of the base 15 relative to the lifting axis 7), said stop 8 thus comes to bear against the surface 10 j on one side, of a shape adapted to receive said stop 8, of the orific

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Handcart (AREA)

Applications Claiming Priority (3)

Publications (1)

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ID=9495901

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Family Cites Families (4)

• 1996
  • 1996-09-13 FR FR9611453A patent/FR2753440B1/fr not_active Expired - Fee Related
• 1997
  • 1997-09-05 WO PCT/FR1997/001571 patent/WO1998011006A1/fr not_active Ceased
  • 1997-09-05 AU AU42115/97A patent/AU4211597A/en not_active Abandoned
  • 1997-09-05 EP EP97940187A patent/EP0929480A1/de not_active Withdrawn

Non-Patent Citations (1)

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