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
  • B66F3/02—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with racks actuated by pinions
  • B66F3/04—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with racks actuated by pinions with several racks
• • 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
  • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
  • B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks

Definitions

• the subject of the present invention is a means and an installation for moving a load at a height which can be used in particular for the construction of buildings for agricultural use of the greenhouse type and others.
• Greenhouse-type buildings include a self-supporting framework covered with a plastic cover transparent to solar radiation.
• the framework of certain greenhouses is made up of spacer poles and plugged at the ends into the ground or into elements installed in the ground.
• Other greenhouses of larger dimensions include a framework constituted by a series of vertical uprights materializing the walls and by a series of small farms, generally in the form arches, constituting the framework of the roof. If the installation of the uprights does not pose any particular problem, it is not the same for the assembly of the framework of the roof. The latter is mounted small by small farm on the corresponding amounts. Due to the height of these uprights, appropriate lifting means are used such as cranes or other machines for the installation of small farms on said uprights. The farms during their lifting are guided in their upward movement by two or more people installed above the ground, on appropriate platforms.
• the object of the present invention is to minimize the importance and the duration of work at height by proposing a means and an installation for moving a load at height thanks to the use of which it becomes possible to move towards the upper end of the amounts of the greenhouse, the roof structure of the latter once it is built on the ground, at the feet of the amounts of the greenhouse.
• the means according to the invention, for moving a load in height along a vertical axis is essentially characterized in that it comprises:
• An engine assembly for moving the frame along the upright comprising a fixed part relative to the upright and a movable part relative to the latter, said movable part being integral with the guide mount.
• the load supported by the frame is perfectly guided in its movement of movement in height which contributes to secure the lifting operation.
• the movable part of the engine assembly is carried by the guide mount.
• the fixed part of the engine assembly is constituted by a vertical rack integral with the upright or formed in the latter
• the movable part of the engine assembly is constituted by
• a reduction gear integral with the guide frame comprising a rotary input shaft coupled to a motor member and a rotary output shaft on which a toothed pinion is fixed,
• each link on one of its external sides carries at least one tooth intended to cooperate in form fitting with one of the teeth of the rack,
• a chain guide in the form of a blade of constant thickness comprising a chain guide path on which the rollers of the chain roll, the chain guide path being formed on the edge of the blade, and the sides of the links the chain coming from either side of the path and the blade, and the guide mount comprises at least one guide roller bearing against the upright on the face of the latter opposite to the rack, said roller being mounted in rotation on a horizontal shaft, supported by the guide mount
• the guide mount forms a cage, the reduction gear being fixed in the cage
• the guide path of the chain guide substantially forms a U and comprises two opposite rectilinear portions joined to one another by a semicircular portion
• the chain guide is slidably mounted on at least one support element fixed to the frame and is fixed in position on this support element by locking screws engaged in threads of the support element
• the locking screws are engaged through through oblong through holes formed in the chain guide, these lights being oriented in the direction of the median longitudinal axis of the chain guide
• means are provided for adjusting the chain tension by moving the chain guide.
• the means for adjusting the chain tension consists of a screw engaged in the thread passing through a tab fixed to the chain guide and protruding under the latter, said screw coming in support against one of the lateral faces of the support element.
• the reduction gear is slidably mounted, along the chain tension axis, in the cage formed by the mount and is fixed in position to said mount by locking bolts.
• a means is provided for tensioning the chain by moving the reduction gear.
• the tensioning means consists of an eccentric.
• the guide mount is provided with two guide rollers spaced from each other.
• This guide mount comprises two parallel vertical wings held in position relative to one another by a connecting means.
• the shaft of each guide roller is integral with a support structure of the frame.
• the shaft of each roller is articulated by its distal end to the support structure along a geometric axis perpendicular to its longitudinal geometric axis and parallel to the face of the upright against which the roller comes to bear. and said shaft in the vicinity of the roller cooperates with a member for adjusting the pressure of the roller against the corresponding face of the upright.
• the member for adjusting the pressure of the roller is a screw engaged in a thread passing through the support structure, this screw being intended to act in thrust in a radial manner on the shaft.
• the shaft of each roller is carried by an eccentric extending between the two vertical wings of the frame, said eccentric being mounted in rotation in bearings made in the wings of said frame, said eccentric constituting member for adjusting the pressure of the roller against the corresponding face of the upright.
• the guide mount comprises a load support element, this support element being removably fixed on the one hand to the load and on the other hand to at least one of the two vertical wings of the frame.
• the action of the support element on the frame generates a moment of tilting of the frame towards the upright and consequently of the link chain towards the rack, the point of connection of the support element to the frame being located at a level below the chain.
• the rotary input shaft of the reducer passes right through the casing of said reducer, protrudes on at least one of the sides of the latter, comprises on the projecting part a square end piece, said input shaft further comprising along its longitudinal axis a through cylindrical bore, in which is engaged in free rotation a cylindrical shaft, which by each of its ends is coupled to a straight section coupling shaft square, that of the two said coupling shafts disposed opposite the square end piece slidably receiving a coupling sleeve, which coupling sleeve is permanently in coupling relation with said coupling shaft and by displacement axial on said shaft is also brought into coupling relationship with the corresponding square end piece of the input shaft to ensure transmission of torque and movement between e said coupling shaft and the input shaft, said coupling shafts being intended to be coupled to a transmission shaft.
• the present invention also relates to an installation for moving a load in height, comprising at least one means for moving a load.
• the installation comprises at least two means for moving the load in height, the input shafts of these two means being axially aligned and being joined to one another by a shaft of transmission, the input shaft of one of these two means for moving a load in height receiving a second transmission shaft also coupled to a drive motor mechanism.
• each upright or else one in two uprights, for example can be fitted with means for moving the load in height and the different displacement means for each of the rows of uprights will be aligned by their input shafts and coupled to one another. through their input shafts via the transmission shafts.
• FIG. 1 is a front view of a means for moving the load according to a first embodiment of the invention
• FIG. 2 is a top view of a load displacement means according to the first embodiment of the invention
• FIG. 3 is a front view of a load moving means according to a second embodiment of the invention
• - Figure 4 is a top view of the load moving means according to the second embodiment of the invention
• the means 1 for moving a load 2 vertically along a vertical upright 3 comprises a guide mount 4 engaged around the upright 3 and supporting the load 2 to be moved and a motor assembly 5 for moving the mount 4 along the upright 3, this motor assembly 5 comprising a fixed part relative to the upright 3 and a movable part relative to the latter, said movable part being secured to the guide mount 4.
• the upright 3 has a cross section of polygonal shape, for example rectangular so as to prohibit the rotation of the mount 4 relative to the upright.
• the fixed part of the motor assembly 5 is constituted by a vertical rack 6, integral with one of the large faces of the upright or formed in the latter by stamping or perforation.
• the movable part of the motor assembly is carried by the guide mount and is constituted by a reduction gear 7 integral with the guide mount 4, comprising a rotary input shaft 8 coupled to a motor member and a rotary output shaft 9 on which is wedged a toothed pinion 10 with which meshes a chain 11 with articulated links and rollers, each link on one of its outer sides carries a tooth 12 provided to cooperate in form fitting with one teeth of the rack 6.
• the chain is engaged on a chain guide path on which the chain rollers roll, this path being formed on a chain guide 13 in the form of a blade of constant thickness, the guide path of chain being formed on the edge of the blade.
• the sides of the chain links are positioned on either side of the guide path and the blade to avoid any derailment.
• the guide mount is equipped with at least one guide roller 14 bearing against the vertical upright 3 and more precisely against the large face of the latter opposite the rack 6, said guide roller 14 being mounted in rotation on a horizontal shaft 15 supported by the guide mount.
• the guide mount 4 is provided with two guide rollers 14 spaced from one another.
• the frame 4 forms a cage, the reduction gear 7 being removably fixed in the cage.
• this cage is offset laterally with respect to the rollers 14, comprises two vertical, parallel wings held in position one by relative to the other by a connecting means and has two vertical lateral openings parallel to the axis of each roller 14
• the connecting means is constituted by a third vertical wing rooted in the first two wings, while according to a second embodiment, the connecting means is constituted by a set of spacers
• Each roller 14, of the grooved type is provided with two sides by which it is disposed on either side of the upright 3 which ensures the maintenance of the lifting means in engagement with the upright
• Each grooved roller 14, coming from in pressure against the upright 3 also ensures the engagement of the teeth 12 of the chain 11 with the teeth of the rack 6
• the reducer 7 has a particularly high reduction ratio which gives it qualities of irreversibility This avoids that the load due to an excessive weight does not become driving
• the reduction ratio will be equal to 1/30
• each guide roller 14 is integral with a support structure 16 of the frame 14
• each roller 14 is articulated by its distal end to the support structure 16 along a geometric axis perpendicular to the longitudinal geometric axis of said shaft and parallel to the face of the upright against which the roller and said shaft bear. 15 in the vicinity of the roller 14 cooperates with a member 19 for adjusting the pressure of the roller against the corresponding face of the upright 3 and consequently of adjusting the pressure of the chain 11 against the rack 6.
• the member 19 for adjusting the pressure of the roller is advantageously constituted by a screw engaged in a thread passing through the support structure 16. This screw is intended to come to act in thrust in a radial manner on the shaft 15. To separate the means load displacement of the upright, just loosen the adjusting screw and move the shaft of the upright roller apart to release the roller from the latter. The displacement means 1 can then be withdrawn from the corresponding amount. The establishment of the means on the amount 3 is done in reverse.
• a safety element 20 is provided, detachably mounted in the support structure 16 and coming to form a stop at the angular movement of the shaft in the direction corresponding to the distance of the roller from the upright 3.
• this safety element 20 is constituted by a pin transverse to the shaft of the roller.
• the support structure 16 is constituted by a tube of quadrangular cross section. This tube is rigidly fixed to the frame 4 and more precisely to the third vertical wing of the latter.
• each roller 14 is carried by an eccentric 28 extending between the two vertical wings of the frame, said eccentric 28 being mounted in rotation in bearings made in the wings of said frame .
• This eccentric 28 constitutes a member for adjusting the pressure of the roller 14 against the corresponding face of the upright.
• the eccentric is constituted by a cylindrical shaft comprising an external cylindrical bearing by which it is engaged in the guide bearings.
• This eccentric forms a cylindrical end piece on the shaft 15 of the corresponding roller, this cylindrical end piece being laterally offset relative to said shaft 15.
• the shaft 15 is fixed to the support frame by means of the eccentric.
• the end piece constituting the eccentric is equipped at the end with a blind tapping intended to receive a locking screw taking support in locking position against the corresponding wing of the frame.
• the shoulder formed at the junction of the shaft 15 / eccentric is supported in the clamping position against the opposite wing.
• angular location of the angular position of the eccentric Preferably, means are provided for angular location of the angular position of the eccentric.
• This angular location means may be constituted by a disc angularly secured to the eccentric and movable in front of a mark made in the corresponding wing of the frame.
• the two lateral openings which the guide mount comprises are arranged parallel to the two large faces of the upright and offset laterally relative to the latter.
• the chain guide 13 it is arranged in a vertical plane perpendicular to the large face of the upright fitted with the rack 6 and is located opposite said large face in a laterally offset manner relative to said rack 6.
• this chain guide 13 extends upwards.
• the guide path of this chain guide 13 forms a U and has two opposite rectilinear portions joined to each other by a semicircular portion.
• the two rectilinear portions of the guide path are parallel to the large face of the upright equipped with the rack 6.
• the semicircular portion of the guide path is located opposite the pinion 10, the output shaft 9 carrying this pinion being parallel to said large face.
• the face of the frame facing the upright is fitted with a through hole in which the output shaft 9 is engaged, the latter receiving the pinion 10 outside the cage formed by the frame 4.
• the chain guide 13 is slidably mounted on at least one support element 17 rigidly fixed to the frame 4 and is fixed in position on this support element 17 by locking screws engaged in threads of the support element.
• the support element 17 is provided with a flat face on which the chain guide 13 comes to bear, the latter being able to slide on the latter after loosening the screws and being able to be firmly immobilized on the latter by the screws of blocking.
• These locking screws are engaged through through oblong through holes formed in the chain guide 13, these lights being oriented in the direction of the median longitudinal axis of said chain guide.
• This adjusting means may consist of a screw engaged in the thread passing through a lug fixed to the chain guide and forming a projection under it. last, said screw bearing against one of the side faces of the support element.
• the reduction gear 7 is slidably mounted, along the chain tension axis, in the cage formed by the mount 4 and is fixed in position to said mount by locking bolts.
• a means of tensioning the chain is provided by displacement of the reduction gear 7, this means preferably being constituted by an eccentric 30.
• This eccentric will be constituted by a cylindrical shaft comprising at the end of the blind threads laterally offset by their axes relative to the 'axis of said tree.
• the eccentric 30 is mounted between the two wings of the mount 4, in contact with the gearbox 7 and comes opposite, through its blind end threads, through orifices made in said wings.
• the eccentric 30 also receives locking screws. By their rods these screws are engaged in blocking in the threads and by their heads come to bear against the wings of the frame.
• the guide mount 4 receives a rigid load support element 25, this support element being removably attached on the one hand to the load and on the other hand to one of the two vertical wings of the mount.
• This rigid element provides the connection between the frame and the load and prevents the load from moving away from the frame.
• the rigid load-bearing element 25 supports all or only part of the pushing or retaining forces.
• This load support element 25 is of elongate shape and comprises a bracket for fixing to the load, fixing produced for example by bolting and a finger for fixing to the corresponding wing of the frame.
• this finger engages in a removable manner in a sheath 26 rigidly fixed to the mount 4.
• the finger engages in articulation in the sheath 26.
• the finger engages in articulation in an appropriate orifice of the frame.
• the support element is positioned along the geometric plane along which the teeth 12 of the chain 11 evolve. Furthermore, it should be noted that the action of the support element 25 on the frame 4 generates a moment of tilting of the frame 4 towards the upright 3 and consequently of the link chain 1 towards the rack 6, the point of connection of the support element to the frame preferably being situated at a level below chain.
• the rotary input shaft 8 of the reducer 7 passes right through the casing of said reducer, protrudes on at least one of the sides of the latter, and comprises on the projecting part, a square end piece 24. This shaft inlet extends perpendicular to the direction of the outlet shaft 9 and this between the two lateral openings of the frame 4.
• the inlet shaft 8 further comprises, along its longitudinal axis, a through cylindrical bore, in which is engaged in free rotation a cylindrical shaft 22, which, by each of its ends, is coupled to a coupling shaft 21 of square cross section, that of the two said coupling shafts 21 disposed opposite the square tip slidably receiving a coupling sleeve 23, which coupling sleeve 23 is permanently in coupling relation with said coupling shaft 21 and by axial displacement on said shaft 21 is also brought in relation to coupling with the square end piece 24 of the input shaft 8 to ensure transmission of torque and movement between said shaft and the input shaft 8.
• only one of the two shafts d The coupling is fitted with a coupling sleeve.
• the invention also relates to an installation for moving a load in height constituted by at least one means 1 for moving the load as described above.
• the load 2 to be moved is a roof structure, this roof structure possibly being that of a greenhouse.
• the greenhouse roof structure will consist of parallel trusses joined by purlins. Each farmhouse in its central area will have a clearance of sufficient height to allow passage to personnel assigned to mounting the greenhouse.
• the installation comprises at least two means for moving the load in height, and the input shafts 8 of these two means are axially aligned and coupled to one another by a tubular transmission shaft 27 and of square cross section .
• the input shaft 8 of one of these two means for moving a load at height receives a second transmission shaft 27 also coupled to a drive motor mechanism.
• the installation will be equipped with several means of displacement 1 for load in height associated with the different uprights 3 or with one upright in two, arranged in parallel rows and the different means 1 of displacement displacement for each of the formed rows will be aligned by their input shafts 8 and coupled to each other by their input shafts 8 via the transmission shafts 27.
• the transmission lines formed in the manner described above will be coupled to each other by conical couples of reason equal to the unit or other constant velocity transmission so that the different transmission lines are perfectly synchronized and the load, in this case the roof structure, raised uniformly at each of these points.
• a drive member for example an electric motor, will be coupled to one of the transmission shafts in order to transmit to the set of shafts a torque for rotation. With such an installation, the roof structure can be moved in successive steps or else continuously.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Geology (AREA)
• Mechanical Engineering (AREA)
• Structural Engineering (AREA)
• Transmission Devices (AREA)
• Spinning Or Twisting Of Yarns (AREA)
• Vibration Prevention Devices (AREA)

Applications Claiming Priority (1)

Publications (2)

Family

ID=32104288

Family Applications (1)

Country Status (6)

Families Citing this family (2)

Family Cites Families (3)

• 2002
  • 2002-10-14 EP EP02795310A patent/EP1554214B1/de not_active Expired - Lifetime
  • 2002-10-14 AU AU2002360116A patent/AU2002360116A1/en not_active Abandoned
  • 2002-10-14 WO PCT/FR2002/003495 patent/WO2004035457A1/fr not_active Ceased
  • 2002-10-14 AT AT02795310T patent/ATE360596T1/de not_active IP Right Cessation
  • 2002-10-14 ES ES02795310T patent/ES2286323T3/es not_active Expired - Lifetime
  • 2002-10-14 DE DE60219832T patent/DE60219832D1/de not_active Expired - Lifetime

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events