EP4053062B1 - Dispositif de parachute pour dispositifs d'élévation, dispositifs d'élévation et procédé d'activation d'un tel dispositif - Google Patents

Dispositif de parachute pour dispositifs d'élévation, dispositifs d'élévation et procédé d'activation d'un tel dispositif Download PDF

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Publication number
EP4053062B1
EP4053062B1 EP22382039.0A EP22382039A EP4053062B1 EP 4053062 B1 EP4053062 B1 EP 4053062B1 EP 22382039 A EP22382039 A EP 22382039A EP 4053062 B1 EP4053062 B1 EP 4053062B1
Authority
EP
European Patent Office
Prior art keywords
guide
rolling element
rolling
braking
friction
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.)
Active
Application number
EP22382039.0A
Other languages
German (de)
English (en)
Other versions
EP4053062A1 (fr
Inventor
Raúl ALONSO RÁMILA
Oier García Zalacain
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.)
Orona S Coop
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Orona S Coop
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Publication of EP4053062A1 publication Critical patent/EP4053062A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • B66B5/20—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of rotatable eccentrically-mounted members

Definitions

  • a first aspect of the present invention refers to a parachute device for elevating devices, which is applied in the elevating device industry, and more specifically in the field of safety devices that act in emergency situations, allowing achieving a device involving low energy consumption, high reliability and very compact dimensions.
  • An embodiment of the invention refers to an elevating device comprising said device, a second aspect of the invention refers to a method for activating said device and a third aspect of the invention refers to a method for unwedging said device.
  • elevating devices include emergency braking devices that are used to reduce the speed until the car of the elevating device is immobilized in emergency situations in which said car reaches speeds above predetermined values during its normal operation.
  • the emergency braking devices are those known as parachutes that prevent the free fall or uncontrolled movement of the car by immobilizing it on the guides through which it moves.
  • the parachute also commonly referred to in the sector as wedge, causes the car to stop by means of a friction force exerted by it when acting on the car guides, stopping it and keeping it immobilized on the guides.
  • parachute devices comprising a wheel that is linked to a movable block of a wedge in such a way that the movement of the wheel drags the movable block of the wedge to reach a braking position.
  • the movement of the wheel is achieved by electronic activation means, which when deactivated brings the wheel in contact with the car guide of an elevator and a friction surface of an activator causing it to begin to roll between the car guide of the elevator and the friction surface itself, which ultimately causes that the movable block translates into a wedging position.
  • a first aspect of the present invention refers to a parachute device for elevating devices, as defined in claim 1, which makes it possible to achieve a more compact device than those currently available, which is simpler as it requires fewer moving parts and elements, and whose energy consumption is reduced.
  • Specific embodiments of the first aspect are defined in claims 2 to 5.
  • a mobile inclined element is used, which is the one that brings the wheel into contact with the friction surface, wherein the necessary force is achieved to cause the wedging roller to drag.
  • the actuating means is first caused to move the friction element so that it does not contact the rolling element. Afterwards, the rolling element is free from its contact with the friction element and its descent occurs along the longitudinal guide under the effect of gravity.
  • the friction element being pivotally mounted, at a pivot point, on the support plate is contemplated, thereby reducing movements and ensuring contact at the same point.
  • the friction element can be constituted as a friction plate that is hinged to the top of the support plate at the pivot point.
  • the activation means comprise an electromagnet and elastic compression means, also referred to as an activator spring.
  • the electromagnet in the rest position the electromagnet is kept powered, in turn, the friction element is actuated at all times by the elastic compression means, whose effect is counteracted by the activation means, so that when the activation means are deactivated the elastic compression means push the friction element against the rolling element.
  • a third aspect of the present invention refers to a method for unwedging a parachute device as described above, as defined in claim 8, comprising:
  • the parachute device that the invention proposes comprises a wedging block (1) that is fixed to the car, not shown, of the elevating device.
  • the wedging block (1) in turn comprises a catch element (2) located on a first side of a guide (A) of the elevating device, and a braking element (3) located on a second side, opposite to the first side, of the guide (A).
  • the guide (A) In a resting position of the device, the guide (A) is not in contact with the braking (3) and catch (2) elements, while in a wedging position the braking element (3) exerts a force on the guide (A) that keeps it in contact with the catch element (2).
  • the parachute device comprises a rolling element (4) housed in a longitudinal guide (6) located, oriented parallel to the guide (A), on a support plate (7) that is actuated by elastic pushing means (8), which in the embodiment shown are pushing springs, which keep the rolling element (4) in contact, with the possibility of rolling, with the guide (A).
  • the rolling element (4) is linked to the braking element (3) so that any linear relative movement between the rolling (4) and braking (3) elements is prevented.
  • the pushing springs (8) are arranged in fixed bushings (8'), superiorly and inferiorly, and act permanently against the support plate (7), making the rolling element (4) be at all times in contact with the guide (A), since said rolling element (4) is housed in the longitudinal guide (6).
  • the device comprises a friction element (5) that can contact the rolling element (4), so that the transition from the rest position to the wedging position occurs when the friction element (5) contacts the rolling element (4) and there is relative movement between the support plate (7) and the guide (A), forcing the movement of the rolling element (4) along the longitudinal guide (6) of the support plate (7) while the rolling element (4) rolls on the friction surface (5) and the guide (A) itself.
  • the device comprises activation means (9) that actuate on the friction element (5). In this way, the passage between the rest position and the wedging position is carried out by means of the activation means.
  • the device is activated by means of the activation means which, in the embodiment shown, comprise an electromagnet and elastic compression means (11), for which the electrical supply is interrupted.
  • the activation means comprise an electromagnet and elastic compression means (11), for which the electrical supply is interrupted.
  • elastic compression means (11) acting on the friction element (5) is no longer counteracted, which makes the friction element contact the rolling element.
  • the wedge can be reset in the absence of movement by the car, so that by powering the electromagnet again, it returns to the rest position.
  • the electromagnet is arranged in proximity to the friction element so that the consumption of the electromagnet, and therefore the energy required for resetting, are very low.
  • the friction element (5) is pivotally mounted, at a pivot point (10), on the support plate (7).
  • the rolling element (4) is linked to the braking element (3) by means of a connecting plate (12).
  • the wedging block (1) comprises an inclined surface (13) with which it can contact the braking element (3) from rest position to the wedging position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Claims (8)

  1. Dispositif de parachute pour dispositifs d'élévation comprenant un bloc de calage (1) qui, quant à lui, comprend un élément de prise (2), situé sur un premier côté d'un guide (A) du dispositif d'élévation, et un élément de freinage (3), situé sur un second côté, opposé au premier côté, du guide (A), de telle sorte que dans une position de repos le guide (A) n'est pas en contact avec les éléments de freinage (3) et de prise (2), tandis que dans une position de calage l'élément de freinage (3) exerce une force sur le guide (A) qui le maintient en contact avec l'élément de prise (2),
    dans lequel le dispositif de parachute comprend un élément de roulement (4) logé dans un guide longitudinal (6) situé, orienté parallèlement au guide (A), sur une plaque de support (7) qui, quant à elle, est actionnée par un moyen de poussée élastique (8),
    dans lequel ledit élément de roulement (4) est lié à l'élément de freinage (3) de telle sorte que tous les déplacements relatifs linéaires entre les éléments de roulement (4) et de freinage (3) sont évités, dans lequel le dispositif comprend un élément de frottement (5) qui peut entrer en contact avec l'élément de roulement (4), de telle sorte que le passage de la position de repos à la position de calage se produit lorsque l'élément de frottement (5) est en contact avec l'élément de roulement (4) et il y a un déplacement relatif entre la plaque de support (7) et le guide (A), forçant le déplacement de l'élément de roulement (4) le long du guide longitudinal (6) de la plaque de support (7) tandis que l'élément de roulement (4) roule sur la surface de frottement (5) et le guide (A) lui-même, caractérisé en ce que le moyens de poussée élastique (8) maintient l'élément de roulement (4) en contact, avec la possibilité de rouler, avec le guide (A).
  2. Dispositif selon la revendication 1, comprenant un moyen d'activation (9) qui agit sur l'élément de frottement (5).
  3. Dispositif selon l'une quelconque des revendications précédentes, dans lequel l'élément de frottement (5) est monté de manière pivotante sur la plaque de support (7).
  4. Dispositif selon l'une quelconque des revendications 2 et 3, dans lequel le moyen d'activation (9) comprend un moyen de compression élastique et électromagnétique (11).
  5. Dispositif selon l'une quelconque des revendications précédentes, dans lequel l'élément de roulement (4) est lié à l'élément de freinage (3) à l'aide d'une plaque de liaison (12).
  6. Dispositif d'élévation comprenant un dispositif de parachute selon l'une quelconque des revendications précédentes.
  7. Procédé d'activation d'un dispositif de parachute selon l'une quelconque des revendications 1 à 5, comprenant :
    - en partant de la position de repos,
    - l'actionnement de l'élément de frottement (5) jusqu'à ce qu'il entre en contact avec l'élément de roulement (4),
    - le maintien du contact entre l'élément de frottement (5) et l'élément de roulement (4) tandis que ledit élément de roulement (4) se déplace le long du guide longitudinal (6) jusqu'à,
    - l'atteinte d'une position de calage dans laquelle l'élément de freinage (3) est dans la position de calage.
  8. Procédé de dégagement d'un dispositif de parachute selon l'une quelconque des revendications 1 à 5, comprenant :
    - en partant de la position de calage,
    - la libération de l'élément de freinage (3) du bloc de calage (1) par rapport à l'élément de prise (2),
    - l'actionnement de l'élément de frottement (5) de telle sorte qu'il arrête d'être en contact avec l'élément de roulement (4), de telle sorte qu'en raison de la force gravitationnelle ledit élément de roulement (4) descend le long du guide longitudinal (6) jusqu'à,
    - l'atteinte d'une position de repos.
EP22382039.0A 2021-02-25 2022-01-21 Dispositif de parachute pour dispositifs d'élévation, dispositifs d'élévation et procédé d'activation d'un tel dispositif Active EP4053062B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES202130157A ES2922124B2 (es) 2021-02-25 2021-02-25 Dispositivo paracaídas para aparatos elevadores, aparato elevador y procedimiento para activar dicho dispositivo

Publications (2)

Publication Number Publication Date
EP4053062A1 EP4053062A1 (fr) 2022-09-07
EP4053062B1 true EP4053062B1 (fr) 2023-08-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22382039.0A Active EP4053062B1 (fr) 2021-02-25 2022-01-21 Dispositif de parachute pour dispositifs d'élévation, dispositifs d'élévation et procédé d'activation d'un tel dispositif

Country Status (2)

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EP (1) EP4053062B1 (fr)
ES (2) ES2922124B2 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6425462B1 (en) * 2000-11-03 2002-07-30 Su The Tran Gravity-assisted elevator brake/clutch
DE602006021240D1 (de) * 2006-11-08 2011-05-19 Otis Elevator Co Aufzugbremsvorrichtung
EP2837592A1 (fr) * 2013-08-13 2015-02-18 Aplicaciones Electromecanicas Gervall, S.A. Système d'entraînement destiné à un engrenage de sécurité d'ascenseur
DE202019105584U1 (de) * 2019-10-10 2019-10-22 Wittur Holding Gmbh Auslöseeinheit zum Betätigen einer Aufzugbremsvorrichtung

Also Published As

Publication number Publication date
ES2956567T3 (es) 2023-12-22
ES2922124A1 (es) 2022-09-08
ES2922124B2 (es) 2023-04-14
EP4053062A1 (fr) 2022-09-07

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