Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
  • B66B9/04—Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically

Definitions

• the present invention relates to a drive device for an elevator or other similar installation.
• the invention relates to means which make it possible to control the upward and downward movement of the elevator or the like in the elevator shaft in which it is installed.
• elevator or the like is meant not only elevators in the proper sense of the term but also freight elevators or devices for the disabled.
• An object of the present invention is therefore to provide a motor-type elevator device for the hydraulic type which makes it possible to develop a large lift stroke while having a simplified structure compared with known hydraulic displacement control modes.
• the stroke of the jack is simply intended to cause the spacing between the bracket itself and the horizontal cross member which is free to move vertically relative to the bracket.
• the two sets of pulleys mounted respectively on the stirrup and on the cross member constitute a block.
• the lift is caused to rise by an amount which is equal to the displacement of the rod of the jack multiplied by the number of strands of the cable passing over the pulleys, the two sets of pulleys constituting the block. For example, if each set of pulleys has four pulleys, the effective stroke of the lift is eight times the effective stroke of the jack.
• the horizontal cross member is arranged below the stirrup. It is understood that this arrangement is very advantageous since there is necessarily space below the elevator shaft when the elevator car is in its lowest position.
• FIG. 2 is a more detailed view of the motor device mounted on the elevator in side view.
• the elevator shaft 10 on the walls of which are mounted two vertical guide bars 12 and 14. Also shown in this figure are lower 16 and upper 18 beams forming part of the stirrup of the elevator secured to the car, the car not being shown in this figure.
• the crosspieces 16 and 18 cooperate with the vertical guide bars 12 and 14 and are integral with each other and integral with the cabin.
• the drive device also includes an additional cross member 20 whose ends 20a and 20b cooperate with the guide bars 12 and 14, but the cross member 20 is free relative to the stirrup 16, 18.
• the cross member 20 is arranged in below the caliper.
• the motor device further comprises a hydraulic cylinder 22 whose body 24 is preferably secured to the crosspieces 1 and 18 of the stirrup and whose end 26a of the rod 26 is secured to the independent crosspiece 20.
• the jack 22 is mounted vertically and its rod also moves well in a vertical direction. It is therefore understood that by controlling the jack 22, one can cause the extension of the rod 26 of the jack and therefore cause a relative spacing L between the stirrup and, more precisely its lower cross member 16 and the independent cross member 20 of a length corresponding to the stroke of the cylinder rod.
• the drive device also comprises a muffle system 30 constituted by a first set of pulleys with horizontal axis 32 and a second set of pulleys with horizontal axis 34.
• the axis 33 of the pulleys 32 is integral with the upper cross member 18 of the stirrup of the elevator while the axis 35 of the pulleys 34 is integral with the independent cross member 20.
• the pulleys are free to rotate on their axes.
• a cable 36 of the type commonly used in elevators passes over the pulleys 32 and 34 to form a block.
• the first end 38 of the cable is preferably secured to the independent cross member 20 while the second end 40 of this cable is fixed relative to the shaft of the elevator, the fixing point 42 being disposed above the upper level which must reach the elevator.
• FIG. 2 there will be described in more detail a preferred embodiment of the motor device for an elevator, the principle of which has already been explained in relation to FIG. 1.
• the cabin 50 is shown. of the elevator which is integral with the stirrup. This consists of crosspieces 16 and 18 and by upper 52 and lower 54 mechanical structures which are of course also integral with the cabin 50.
• the body 24 of the jack is fixed to its upper part 24a on the mechanical structure 52 and at its lower part 24b on the mechanical structure 54, the cylinder body being of course vertical.
• On the upper structure 52 is also fixed a horizontal axis 56 on which the upper pulleys 32 are freely mounted. In the particular example considered, there are four.
• a mechanical structure 58 is mounted on which the end 26a of the rod 26 of the jack is fixed.
• the connection between the end of the cylinder rod and the structure 58 is articulated.
• On the part 58 is also mounted a horizontal axis 60 disposed opposite the upper axis 56.
• On this axis 60 the pulleys 34 of the lower set of pulleys are mounted free.
• FIG 2 there is also shown schematically, fixed for example on the body 24 of the jack, the hydraulic motor 62 which is used to control the movements of the rod 26 of the jack relative to the body 24.
• An additional advantage of the present invention is that the amount of working fluid is reduced due to the reduced stroke of the cylinder rod.

Landscapes

• Engineering & Computer Science (AREA)
• Automation & Control Theory (AREA)
• Structural Engineering (AREA)
• Types And Forms Of Lifts (AREA)
• Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
• Elevator Control (AREA)
• Actuator (AREA)
• Vehicle Body Suspensions (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9493620

Family Applications (1)

Country Status (8)

Families Citing this family (5)

Family Cites Families (10)

• 1996
  • 1996-07-02 FR FR9608206A patent/FR2750687B1/fr not_active Expired - Fee Related
• 1997
  • 1997-07-01 AT AT97931841T patent/ATE241561T1/de not_active IP Right Cessation
  • 1997-07-01 WO PCT/FR1997/001172 patent/WO1998000358A1/fr not_active Ceased
  • 1997-07-01 US US09/214,283 patent/US6148961A/en not_active Expired - Fee Related
  • 1997-07-01 DE DE69722405T patent/DE69722405D1/de not_active Expired - Lifetime
  • 1997-07-01 EP EP97931841A patent/EP0909256B1/de not_active Expired - Lifetime
  • 1997-07-01 JP JP10503892A patent/JP2000513316A/ja active Pending
  • 1997-07-01 CA CA002258233A patent/CA2258233A1/en not_active Abandoned

Non-Patent Citations (1)

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