EP1947049A1 - Construction d'une machine de traction sans boîte de vitesse de profondeur - Google Patents

Construction d'une machine de traction sans boîte de vitesse de profondeur Download PDF

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Publication number
EP1947049A1
EP1947049A1 EP07250236A EP07250236A EP1947049A1 EP 1947049 A1 EP1947049 A1 EP 1947049A1 EP 07250236 A EP07250236 A EP 07250236A EP 07250236 A EP07250236 A EP 07250236A EP 1947049 A1 EP1947049 A1 EP 1947049A1
Authority
EP
European Patent Office
Prior art keywords
frame member
connecting rods
holes
shoulder
elevator
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.)
Withdrawn
Application number
EP07250236A
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German (de)
English (en)
Inventor
Jean-Marie Rennetaud
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.)
Magil Corp
Original Assignee
Magil Corp
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 Magil Corp filed Critical Magil Corp
Priority to EP07250236A priority Critical patent/EP1947049A1/fr
Publication of EP1947049A1 publication Critical patent/EP1947049A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
    • B66B11/0438—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with a gearless driving, e.g. integrated sheave, drum or winch in the stator or rotor of the cage motor

Definitions

  • This invention relates to elevator drives, and in particular to a universal machine frame construction.
  • Gearless traction machines are generally driving a wide range of electric traction elevators.
  • Fig. 1 and Fig. 2 show a typical gearless traction machine construction existing in the art.
  • a traction sheave 10 is driving a plurality of ropes 12 having one end connected to an elevator car and the other end connected to a counterweight.
  • the sheave 10 is rigidly mounted on a shaft 14 which rotates on bearings 16, 18 mounted in pedestals 20, 22.
  • An electric motor 24 is generally attached to one of the pedestals 22 and drives the shaft 14 and the sheave 10.
  • the pedestals 18, 20 are generally mounted on a massive steel structure 26 called a bedplate.
  • Such prior art construction is displayed in Japanese patent JP2003201082 , among others.
  • the problem inherent to this design is that the ropes 12 often interfere with the bedplate 26 when the diameter of the sheave 10 changes. This interference is shown in Fig. 2 as X when the sheave diameter is increased to the value D.
  • the sheave diameter can vary because ropes can be of different diameters and the sheave diameter is generally a multiple of the rope diameter (approximately 40 times). Therefore, the construction described above is not flexible because certain sheave diameters are prohibited or require a specific steel structure in order to be implemented.
  • the bedplate steel structure 26 is generally a massive welded steel assembly, making this change expensive and undesirable.
  • Another problem is that the dimensioning of the lower steel structure also needs to be changed to accommodate sheaves of various widths.
  • the width of the sheave can vary, depending on the number of ropes 12, which can number between 2 and 10 or more, based upon the total elevator load being moved.
  • the motor has a so-called “external rotor” ( EP1411620A1 , JP2002274770 , DE4233759A1 ) but the pedestals supporting the machine are also mounted on a heavy steel structure that eventually interferes with the ropes.
  • a major disadvantage of such external rotor construction is that the sheave diameter is dependent of the motor diameter, thus reducing the flexibility of the machine.
  • the present invention is an improved and versatile elevator machine construction allowing maximum flexibility for sheave diameters and sheave width while reducing the overall cost of the machine.
  • the elevator machine mount construction comprises a first frame member having a first bearing mounting aperture therein and a first plurality of holes and a second frame member having a second bearing mounting aperture therein and a second plurality of holes.
  • the first plurality of holes and the second plurality of holes are oriented such that the holes in the first frame member and the holes in the second frame member are substantially aligned in pairs.
  • a plurality of connecting rods is provided, each having a first end passing through one of the plurality of holes in the first frame member, and a second end passing through the substantially aligned hole in the second frame member.
  • Fasteners are located on the first end and the second end of each of the plurality of connecting rods.
  • Each of the plurality of connecting rods preferably has a first shoulder and a second shoulder positioned adjacent to the first and second frame members respectively, to separate the first and second frame members.
  • the elevator machine mount preferably comprises a spacer bushing positioned about each of said plurality of connecting rods between said first frame member and said second frame member.
  • the first and second ends of said connecting rods are preferably threaded and the fasteners comprise nuts engaged on said ends.
  • the elevator machine mount desirably includes a spacer about each of said plurality of connecting rods adjacent to said second frame member.
  • a first preferred embodiment is an elevator machine mount comprising a first frame member having a first bearing mounting aperture therein, a first plurality of holes, a first inside face, and a first outside face; a second frame member having a second bearing mounting aperture therein, a second plurality of holes, second inside face, and a second outside face; said first plurality of holes and said second plurality of holes being oriented such that the holes in said first frame member and in said second frame member are substantially aligned in pairs; a plurality of connecting rods, each connecting rod having a first threaded end, a second threaded end, each of said plurality of connecting rods having a first end passing through one of said plurality of holes in said first frame member, and a second end passing through the substantially aligned hole in said second frame member, and a nut threadedly engaged on said first threaded end and said second threaded end of each of said plurality of connecting rods; a plurality of frame spacers located between said first frame member and said second frame member; and
  • said frame spacers are comprised of a first shoulder on each of said plurality of connecting rods; a second shoulder on each of said plurality of connecting rods; wherein said first shoulder is adjacent to said first inside face and said second shoulder is adjacent to said second inside face.
  • the frame spacers may be comprised of a spacer bushing positioned about each of said plurality of connecting rods between said first frame member and said second frame member.
  • a second preferred embodiment is an elevator drive machine comprising a first frame member having a first bearing mounting aperture therein and a first plurality of holes; a second frame member having a second bearing mounting aperture therein and a second plurality of holes; said first plurality of holes and said second plurality of holes being oriented such that the holes in said first frame member and the holes in said second frame member are substantially aligned in pairs; a plurality of connecting rods, each connecting rod having a first threaded end, a second threaded end, a first shoulder, a second shoulder, wherein said first shoulder and said second shoulder are positioned on each of said plurality of connecting rods to separate said first frame member and said second frame member, said first shoulder being adjacent to said first inside face, said second shoulder being adjacent to said second inside face, each of said plurality of connecting rods having a first end passing through one of said plurality of holes in said first frame member, and a second end passing through the substantially aligned hole in said second frame member, and a nut threadedly engaged on said first
  • the elevator drive machine preferably has suspension selected from the group consisting of sisal core ropes, synthetic ropes, steel ropes and flat belts.
  • the brake is a disk brake or a drum brake.
  • the motor is of frameless construction.
  • a spacer may be positioned about each of the plurality of the connecting rods adjacent to the outer face of the second frame member and a motor mounted on the connecting rods and separated from the second frame member by the spacer.
  • a shaft having a sheave, passes through bearings mounted in the apertures in the first and second frame members, with the sheave positioned between the frame members.
  • a suspension for an elevator car is mounted on the sheave for raising and lowering the elevator car.
  • the plurality of connecting rods may be repositioned into alternate holes in the first and second frame members to accommodate sheaves of various diameters while preventing interference between the elevator car suspension and the connecting rods. Additionally, the length of the connecting rods may be varied to accommodate sheaves of various widths.
  • frame members 100, 102 are connected by a plurality of connecting rods 104.
  • Frame members 100, 102 are fabricated from metal such as steel plate of such thickness to provide adequate support for the machine, as will be evident to one skilled in the art.
  • a plurality of holes 103 are drilled, or otherwise machined by means well known in the art, in frame members 100, 102 such that the holes in frame member 100 substantially align with the holes in frame member 102.
  • Frame members 100, 102 are then mounted to a plate 142 by means known in the art. In the preferred embodiment, the frame members 100, 102 are mounted to the plate by bolts 146.
  • FIG. 3 and Fig. 4 four metal connecting rods 104 are used.
  • the same connecting rods also support the stator 112 of the motor 110.
  • the motor 110 has a so-called "frameless" construction, meaning that the stator is not mounted in any additional frame or enclosure, as are conventional motors.
  • a sheave 116 is attached to a shaft 118 and rotates within the frame members 100, 102 via standard bearings 120, 121.
  • the motor's rotor 114 is connected to the shaft 118 and transmits the motor torque.
  • a disk brake 122 is mounted on the front end of the machine with a disk brake lining 124.
  • the disk brake lining 124 is a double face lining having a first lining 124a and a second lining 124b. To affect a braking of the machine, the first lining 124a is applied to the inner surface of the disk 122 and the second lining is applied to the outer surface of frame member 100.
  • the spacing between the frame members 100, 102 is realized by two shoulders 126, 128 of the connecting rods 104.
  • the shoulders 126, 128 are machined onto the connecting rods 104 by increasing the diameter of the connecting rods 104 for a length based on the width of the sheave 116.
  • a spacer bushing (not shown) may be placed about each connecting rod between frame members 100 and 102.
  • the spacer bushings are cylinders machined from steel or other suitable material having an inside diameter and an outside diameter.
  • the inside diameter of the spacer bushing is larger than the diameter of the connecting rod 104 such that the connecting rod 104 passes through the inside diameter of the spacer bushing.
  • the spacer bushings would then be sized to a length to accommodate the width of the sheave 116.
  • Spacers 130 mounted on the connecting rods 104 allow the coils 113 of the stator 112 to have sufficient clearance from the innermost face of the rear frame member 102.
  • Spacers 130 are cylinders machined from steel or other suitable material having an inside diameter and an outside diameter. The inside diameter of the spacer is larger than the diameter of the connecting rod 104 such that the connecting rod 104 passes through the inside diameter of the spacer 130.
  • Each end of a connecting rod 104 is threaded at 131 to accommodate nuts 132. Finally, nuts 132 are tightened on each end of the connecting rods 104 in order to form a rigid assembly.
  • the sheave 116 can be designed to drive conventional sisal core ropes, synthetic ropes or flat belts, among other suspension means, to fulfill modern elevator requirements.
  • the sheave diameter can vary from approximately 4 inches to approximately 21 inches and the sheave width from approximately 1 1/2 inches to approximately 14 inches. Accommodation of such wide variation of sheave diameters and widths is easily achieved with the present invention.
  • the connecting rods 104 may be positioned at various locations by placing the connecting rods in appropriate holes in the frame members 100, 102 so that no interference exists between the ropes (or other suspension means) and any part of the machine for any sheave diameter.
  • Fig. 5 through Fig. 8 show a machine built from the teachings of the present invention driving a flat belt 140.
  • Fig. 5 and Fig. 7 show two possible locations for positioning connecting rods 104 in the lower portions of frame members 100, 102.
  • the connecting rods 104 are installed in the lower portions of frame members 100, 102 at a distance from the center line of the shaft 118 such that the ropes, flat belts, or other suspension means pass inside the connecting rods 104.
  • the connecting rods 104 are installed in the lower portions of frame members 100, 102 are installed at a distance from the center line of the shaft 118 such that the ropes, belts, or other connecting means pass outside the connecting rods 104.
  • Fig. 5 and Fig. 6 thus show an embodiment of the present invention where connecting rods 104 mounted in the A position are at a distance from the centerline of shaft 118 which is greater than the radius of the sheave 116 so that the flat belt 140 passes inside the connecting rods 104.
  • the sheave diameter has been increased and the lower connecting rods 104 are mounted in location B to avoid interference with the suspension means which could occur if the lower connecting rods were placed at location A.
  • the connecting rods 104 are at a distance from the centerline of shaft 118 that is less than the radius of the sheave 116 so that the flat belt 140 passes outside the connecting rods 104.
  • the machine of the present invention can accommodate a large spectrum of sheave diameters and sheave widths with minimum and inexpensive changes (position of connecting rods, length of connecting rods, shaft length).

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
EP07250236A 2007-01-20 2007-01-20 Construction d'une machine de traction sans boîte de vitesse de profondeur Withdrawn EP1947049A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07250236A EP1947049A1 (fr) 2007-01-20 2007-01-20 Construction d'une machine de traction sans boîte de vitesse de profondeur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07250236A EP1947049A1 (fr) 2007-01-20 2007-01-20 Construction d'une machine de traction sans boîte de vitesse de profondeur

Publications (1)

Publication Number Publication Date
EP1947049A1 true EP1947049A1 (fr) 2008-07-23

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Family Applications (1)

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EP07250236A Withdrawn EP1947049A1 (fr) 2007-01-20 2007-01-20 Construction d'une machine de traction sans boîte de vitesse de profondeur

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EP (1) EP1947049A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2424807A4 (fr) * 2009-04-28 2015-10-07 Otis Elevator Co Bâti de machine d'ascenseur avec configuration de réduction du bruit
EP3403982A1 (fr) * 2017-05-18 2018-11-21 Otis Elevator Company Cadre de machine flexible

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0631970A2 (fr) * 1993-06-28 1995-01-04 Kone Oy Machinerie d'ascenseur
DE9422290U1 (de) * 1993-06-28 1999-10-28 Kone Corp., Helsinki Treibscheibenaufzug
WO2002103883A1 (fr) * 2001-05-18 2002-12-27 Thyssenkrupp Aufzugswerke Gmbh Machine electrique presentant des pieces porteuses en matiere plastique
EP1642858A2 (fr) * 2004-09-10 2006-04-05 NingBo XinDa Elevator Fittings Factory Entraînement d'ascenseur
WO2006082646A1 (fr) * 2005-02-04 2006-08-10 Mitsubishi Denki Kabushiki Kaisha Treuil d’ascenseur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0631970A2 (fr) * 1993-06-28 1995-01-04 Kone Oy Machinerie d'ascenseur
DE9422290U1 (de) * 1993-06-28 1999-10-28 Kone Corp., Helsinki Treibscheibenaufzug
WO2002103883A1 (fr) * 2001-05-18 2002-12-27 Thyssenkrupp Aufzugswerke Gmbh Machine electrique presentant des pieces porteuses en matiere plastique
EP1642858A2 (fr) * 2004-09-10 2006-04-05 NingBo XinDa Elevator Fittings Factory Entraînement d'ascenseur
WO2006082646A1 (fr) * 2005-02-04 2006-08-10 Mitsubishi Denki Kabushiki Kaisha Treuil d’ascenseur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2424807A4 (fr) * 2009-04-28 2015-10-07 Otis Elevator Co Bâti de machine d'ascenseur avec configuration de réduction du bruit
EP3403982A1 (fr) * 2017-05-18 2018-11-21 Otis Elevator Company Cadre de machine flexible
CN108946382A (zh) * 2017-05-18 2018-12-07 奥的斯电梯公司 柔性机架
US10207899B2 (en) 2017-05-18 2019-02-19 Otis Elevator Company Flexible machine frame

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