EP0442429B1 - Parachute de sûreté pour chariot guidé sur une balustrade - Google Patents

Parachute de sûreté pour chariot guidé sur une balustrade Download PDF

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Publication number
EP0442429B1
EP0442429B1 EP91101901A EP91101901A EP0442429B1 EP 0442429 B1 EP0442429 B1 EP 0442429B1 EP 91101901 A EP91101901 A EP 91101901A EP 91101901 A EP91101901 A EP 91101901A EP 0442429 B1 EP0442429 B1 EP 0442429B1
Authority
EP
European Patent Office
Prior art keywords
catch lever
catch
lever arm
rungs
valley
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.)
Expired - Lifetime
Application number
EP91101901A
Other languages
German (de)
English (en)
Other versions
EP0442429A3 (en
EP0442429A2 (fr
Inventor
Gerd Grass
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.)
Thyssen Treppenlifte GmbH
Original Assignee
Grass GmbH Deutschland
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 Grass GmbH Deutschland filed Critical Grass GmbH Deutschland
Publication of EP0442429A2 publication Critical patent/EP0442429A2/fr
Publication of EP0442429A3 publication Critical patent/EP0442429A3/de
Application granted granted Critical
Publication of EP0442429B1 publication Critical patent/EP0442429B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66B9/06—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces
    • B66B9/08—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces associated with stairways, e.g. for transporting disabled persons
    • B66B9/0807—Driving mechanisms
    • B66B9/0815—Rack and pinion, friction rollers

Definitions

  • the invention relates to a safety device for a guided on a railing carriage, on which a two-armed, pivotally mounted catch lever is provided, which stops the carriage by swiveling against bars arranged transversely to the direction of travel on the railing at impermissibly high speed.
  • a safety device for an elevator in which rotatable pendulums are attached to the side of the elevator floor, which are pivoted out when the elevator moves up or down by hitting curved elevations on the guide rails. If a predetermined maximum speed is reached during the downward movement of the elevator, the pendulums cannot return to their normal position quickly enough and then hit protrusions on the guide rail by which the elevator is stopped.
  • This known device is complex and costly due to the high number of curved elevations and the additional projections required and cannot be set to different response speeds.
  • the invention has for its object to show a simpler solution for a safety device for a slide guided on a railing, which also allows an advantageous setting to different response speeds.
  • the object is achieved by the features specified in the characterizing part of patent claim 1. Further features are listed in the subclaims. An embodiment of the invention will now be explained on a stair lift with a load-carrying device designed as a platform or seat with reference to the drawings.
  • the railing for guiding the load-bearing device - hereinafter referred to briefly as a carriage - essentially consists of a stable guide tube 1 (FIG. 1), a toothed rack 5 guided close above the floor 2 or the steps 3 and arranged between the guide tube 1 and the toothed rack 5 Rungs 7, which have the same distances in their upper area.
  • a guide cage 10 is mounted on a pivot axis 12 on the base plate 9 of the sled, which carries a person seat or a platform for a disabled lift (not shown).
  • Four guide rollers 14, which are adapted to the diameter of the guide tube 1, are rotatably mounted in the guide cage 10 and allow safe and smooth guidance of the slide on the guide railing.
  • the carriage is supported in its lower section in the region of the rack 5 (FIG. 2) and driven at the same time.
  • the rack 5 is covered over its entire length on its side facing the steps by a screen 16 (not shown in FIG. 1).
  • a screen 16 (not shown in FIG. 1).
  • An electric motor 22 drives a gear wheel 24 which engages in the toothed rack via a gear 23 and which has a lateral guide on the screen 16.
  • the carriage is supported by an upper support roller 26 on the outside of the screen 16.
  • the massive catch lever 28 (FIGS. 2 and 3) is pivotably mounted on two bearing plates 30, which are fixedly connected to the base plate 9, and has a length which corresponds approximately to the mean distance between two rungs 7.
  • the two-armed catch lever 28 is held in the position shown in solid lines in FIG. 3 by a tension spring 34, which is fastened on the one hand to a holding pin 35 of the one bearing plate 30 and on the other hand is suspended in one of the holes in the row of holes 36.
  • an acute-angled recess 40 is incorporated, which guarantees that the catch lever arm 39 securely engages on the rung 7a.
  • an extension 43 is provided which, when the catch lever 28 is pivoted into the latching position, serves a switch 44 for switching off the power supply to the electric motor 22 (FIG. 1) and possibly for triggering an alarm signal.
  • the mountain-side catch lever arm 41 has on its side facing the rungs 7 a cam-like projection 45 which pivots the catch lever 28 when the slide descends on each rung 7 in such a way that the valley-side catch lever arm 39 enters the space between the next rung 7.
  • the maximum angle of the pivoting-in process is determined by the maximum increase in the projection 45 when sliding along the long side 46 of the rung 7. As soon as the apex of the projection 45 leaves the longitudinal side 46 of the rung 7 during the downward movement in the direction of arrow 32, the return movement of the catch lever 28 will start under the action of the tension spring 34. Because of the inertia of the relatively massive catch lever 28, a certain time is required for the pivoting back of the catch lever, since this movement begins after the release of the projection on the rung 7 at zero and increases with the acceleration determined by the force of the tension spring 34. However, if the speed of the downward movement is greater than the defined normal speed, the catch lever 28 will not have left the area between the rungs 7 and 7a (FIG. 3) and will apply it to the rung 7a and assume the position shown in broken lines in FIG.
  • the main advantage of the safety device according to the invention is the particularly cost-effective and reliable design solution, which does not require any additional monitoring device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)

Claims (5)

  1. Parachute de sureté pour chariot guidé sur une balustrade auquel est prévu une clenche à deux bras pivotant transversalement au sens de marche, qui, en cas de vitesse inadmissiblement augmentée, arrêtera le chariot en pivotant contre des éparts disposés à la balustrade transversalement au sens de marche, caractérisé par ce que
    a) un ressort de traction (34) agit sur la clenche (28) excentriquement à son axe de pivotement de telle façon que la partie face (38) du bras de clenche (39), côté vallée, puisse pivoter dans la zone des éparts (7), soit contre l'action du ressort de traction (34),
    b) le bras de clenche (41), côté montagne, présente, au côté vis-à-vis des éparts (7), une saillie (43) similaire à une came qui, en cas de descente, fait pivoter la clenche (28) à chaque épart (7) de telle façon que le bras de clenche (39), côté vallée, entre dans l'espace devant le prochain épart (7), et
    c) le ressort de traction (34) a été dimensionné de telle façon que le pivotement en retour de la clenche (28), effectué par le ressort de traction, est tellement retardé par son inertie de masse que lors du dépassement de la vitesse normale, le bras de clenche (39), côté vallée, atteindra encore le prochain épart.
  2. Parachute de sureté selon revendication 1, caractérisé par ce que la partie face (38) du bras de clenche (39), côté vallée, présente un évidement acutangulé (40).
  3. Parachute de sureté selon les revendications 1 et 2, caractérisé par ce qu'en la zone centrale de la clenche (28), excentrique par rapport au pivot (31), plusieurs alésages ont été disposés en file, alésages faisant partie d'une rangée de trous (36) et prévus pour la fixation du ressort.
  4. Parachute de sureté selon les revendications 1 à 3, caractérisé par ce que la partie face (42) du bras de clenche (41), côté montagne, présente un prolongement (43) actionnant un interrupteur (44) en position d'arrêt de la clenche.
  5. Parachute de sureté selon les revendications 1 à 4, caractérisé par ce que la longueur de la clenche (28) correspond à la distance moyenne des éparts (7).
EP91101901A 1990-02-12 1991-02-11 Parachute de sûreté pour chariot guidé sur une balustrade Expired - Lifetime EP0442429B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4004190 1990-02-12
DE4004190 1990-02-12

Publications (3)

Publication Number Publication Date
EP0442429A2 EP0442429A2 (fr) 1991-08-21
EP0442429A3 EP0442429A3 (en) 1992-02-19
EP0442429B1 true EP0442429B1 (fr) 1994-11-30

Family

ID=6399927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101901A Expired - Lifetime EP0442429B1 (fr) 1990-02-12 1991-02-11 Parachute de sûreté pour chariot guidé sur une balustrade

Country Status (2)

Country Link
EP (1) EP0442429B1 (fr)
DE (1) DE59103604D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102936959A (zh) * 2012-11-28 2013-02-20 无锡威华电焊机制造有限公司 钢筋桁架节间距调整装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6659230B1 (en) * 2000-01-17 2003-12-09 Stannah Stairlifts Limited Safety brake for stairlifts

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046226A (en) * 1976-07-08 1977-09-06 Flinchbaugh-Murray Corporation Elevator system for transporting wheelchair patients
DE2719120C2 (de) * 1977-04-29 1987-08-20 Kleindienst GmbH, 8900 Augsburg Lift
EP0137577A1 (fr) * 1983-10-10 1985-04-17 Antony Stopher Ascenseur d'escalier
GB8531094D0 (en) * 1985-12-18 1986-01-29 Ease Ltd Stairlift

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102936959A (zh) * 2012-11-28 2013-02-20 无锡威华电焊机制造有限公司 钢筋桁架节间距调整装置

Also Published As

Publication number Publication date
EP0442429A3 (en) 1992-02-19
EP0442429A2 (fr) 1991-08-21
DE59103604D1 (de) 1995-01-12

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