EP0968737A2 - Poulie avec frein de secours automatique - Google Patents

Poulie avec frein de secours automatique Download PDF

Info

Publication number
EP0968737A2
EP0968737A2 EP99112036A EP99112036A EP0968737A2 EP 0968737 A2 EP0968737 A2 EP 0968737A2 EP 99112036 A EP99112036 A EP 99112036A EP 99112036 A EP99112036 A EP 99112036A EP 0968737 A2 EP0968737 A2 EP 0968737A2
Authority
EP
European Patent Office
Prior art keywords
rope
pulley
pull
leg
load
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.)
Granted
Application number
EP99112036A
Other languages
German (de)
English (en)
Other versions
EP0968737B1 (fr
EP0968737A3 (fr
Inventor
Giovanni Ravaglia
Angelo Olani
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.)
Tornomeccanica Srl
Original Assignee
Tornomeccanica Srl
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
Priority claimed from IT98GE000022 external-priority patent/IT245196Y1/it
Priority claimed from IT1999GE000057A external-priority patent/IT1309146B1/it
Application filed by Tornomeccanica Srl filed Critical Tornomeccanica Srl
Publication of EP0968737A2 publication Critical patent/EP0968737A2/fr
Publication of EP0968737A3 publication Critical patent/EP0968737A3/fr
Application granted granted Critical
Publication of EP0968737B1 publication Critical patent/EP0968737B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/16—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes for action on ropes or cables
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices

Definitions

  • Pulleys to facilitate hoisting and lowering of loads and general products are well known. These pulleys are especially used in the building and construction sectors and are normally handled by two persons, one of them being placed at the top where the pulley is fastened and the other at floor level.
  • This pulley consists of a disk with a supporting groove or race guiding the rope, idling around its shaft supported by a yoke equipped with a fastening device.
  • pulleys have no protective device to prevent the load from falling down when the pull leg of the rope is released by the operator at floor level.
  • Some pulleys have been provided with a safety ratchet gear blocking the load and consisting of a gear wheel keyed onto the disk shaft and a ratchet but this safety system has serveral drawbacks, the most important of which is the fact that this ratchet gear has to be released for each operation and this is extremely dangerous.
  • This invention has the aim to eliminate this drawback and to provide the pulley with an automatic safety brake.
  • This braking system consists of a double walled rocker arm having the shape of a right-angled triangle, its hypotenuse being slantwise located at the top, its smaller acute angle ( ⁇ ) located at the bottom towards the load leg of the rope, whereas the greater acute angle ( ⁇ ) is located at the upper end of the manual pull leg of the rope.
  • This rocker arm is secured to the outside of the pulley yoke by means of transverse axed pivot pins, slightly offset with respect to the shaft axis of the pulley sheave in direction of the manual pull rope.
  • a snatch block is fastened at right-angle ( ⁇ ) level of the rocker arm at the bottom towards the pull rope, whereas an adjustable counterweight is mounted at the level of the smaller acute angle ( ⁇ ).
  • ⁇ right-angle
  • ⁇ right-angle
  • ⁇ right-angle
  • ⁇ right-angle
  • the pulley consists of a disk 1, with a peripheral groove 2 supporting and guiding the rope 3; this disk is rotating on its shaft 4 transverse mounted on the pulley yoke 5.
  • This yoke 5 features at its upper end a device 6 of any kind by which the pulley may be fastened to a supporting structure such as for instance the pipe of a scaffolding.
  • the pulley features a double walled rocker arm 9 shaped like a right angled triangle, its hypotenuse being slantwise located at the top, its smaller acute angle ⁇ being located at the bottom towards the load leg 8 of the hoisting rope, whereas the greater acute angle ⁇ is located at the manual pull leg 7 of the rope.
  • this rocker arm 9 The external walls of this rocker arm 9 are fastened onto the pulley yoke 5 by means of transverse pivot pins 10 slightly off-centred with respect to the shaft axis 4 of the pulley disk 1 in the direction of the manual pull leg 7 of the rope.
  • a snatch block 11 with transverse revolving axle is fixed to the rocker arm on which the pulling leg 7 of the rope is sliding, whereas an adjustable counterweight 12 is mounted at the level of the smaller acute angle ⁇ .
  • a transverse axed pin 13 bearing a grip wedge 14 with rifled or toothed lower surface which may be inserted between the rope 3 resting on the race 2 of the pulley disk 1 and a bushing 15 mounted on the transverse pin 16 fastened to the yoke 5, thus compressing and blocking the rope inside the pulley race 2.
  • transverse catch 17' located at right angle level ⁇ with the aim to prevent undesirable shifting of the rope while another transverse catch 17, located at the level of the smaller acute angle ⁇ , will act as a releasing and lowering device for the load rope 8 when without load (cf. Fig. 9).
  • the counterweight 12 is adjustable in various positions 18 so as to adjust the lever arm to the pivot pin 10 of the rocker arm 9 depending from the pulley height and the resulting length and weight of te pull rope.
  • the above invention may be used with any sheave or pulley, with different lifting power and applications, if necessary by replacing some components by others having the same objective.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Lowering Means (AREA)
  • Pulleys (AREA)
  • Braking Arrangements (AREA)
EP99112036A 1998-07-02 1999-06-22 Poulie avec frein de secours automatique Expired - Lifetime EP0968737B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITGE980022U 1998-07-02
IT98GE000022 IT245196Y1 (it) 1998-07-02 1998-07-02 Carrucola per edilizia con freno automatico di sicurezza.
ITGE990057 1999-05-28
IT1999GE000057A IT1309146B1 (it) 1999-05-28 1999-05-28 Carrucola con freno automatico di sicurezza

Publications (3)

Publication Number Publication Date
EP0968737A2 true EP0968737A2 (fr) 2000-01-05
EP0968737A3 EP0968737A3 (fr) 2001-09-19
EP0968737B1 EP0968737B1 (fr) 2008-04-23

Family

ID=26330634

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99112036A Expired - Lifetime EP0968737B1 (fr) 1998-07-02 1999-06-22 Poulie avec frein de secours automatique

Country Status (6)

Country Link
EP (1) EP0968737B1 (fr)
AT (1) ATE392923T1 (fr)
DE (1) DE69938572T2 (fr)
DK (1) DK0968737T3 (fr)
ES (1) ES2306491T3 (fr)
PT (1) PT968737E (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1783091A3 (fr) * 2005-11-02 2008-05-28 Balfour Beatty plc Dispositif exploité sur des ropes pour destiné à descendre des charges

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2528410A1 (de) * 1975-06-25 1977-01-13 Matsumoto Kiko Co Verlangsamende flucht- bzw. rettungseinrichtung
US5348117A (en) * 1992-08-12 1994-09-20 Pickering Gregory R Rescue system
WO1997017107A1 (fr) * 1995-11-06 1997-05-15 Rollgliss Ag Appareil de levage et d'abaissement a elingue

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1783091A3 (fr) * 2005-11-02 2008-05-28 Balfour Beatty plc Dispositif exploité sur des ropes pour destiné à descendre des charges

Also Published As

Publication number Publication date
DE69938572D1 (de) 2008-06-05
ES2306491T3 (es) 2008-11-01
PT968737E (pt) 2008-07-29
DK0968737T3 (da) 2008-09-01
EP0968737B1 (fr) 2008-04-23
EP0968737A3 (fr) 2001-09-19
DE69938572T2 (de) 2009-05-28
ATE392923T1 (de) 2008-05-15

Similar Documents

Publication Publication Date Title
US20190233266A1 (en) Platform hoist with automatic emergency braking system
US12043519B2 (en) Elevator system
US4225012A (en) Safety clamp device and apparatus utilizing same
US5090666A (en) Hoist apparatus
US6267702B1 (en) Pulley with automatic emergency brake
US4128228A (en) Extension ladder hoist
US1921627A (en) Rope brake and lock
EP0968737B1 (fr) Poulie avec frein de secours automatique
EP0983956A2 (fr) Méthode pour libérer le dispositif d'arrêt d'urgence d'un ascenseur
JP4031228B2 (ja) 手動昇降ケージ
EP0363800B1 (fr) Appareil de levage
JP2004099312A (ja) ３６０度回転方式による荷台が転換して台車となる昇降機
EP1373121B1 (fr) Dispositif de blocage automatique d'un mouflage de levage
US2994554A (en) Tongs
JP6610914B2 (ja) エレベータの非常止め装置の検査方法
RU2048843C1 (ru) Устройство для перемещения театральных декораций
JP2557659Y2 (ja) 高所作業車におけるリフター
KR100772203B1 (ko) 타워크레인의 승강장치
US3794298A (en) Hoisting mechanism for ascending and descending a cable
US979691A (en) Hoisting device.
KR960002343B1 (ko) 스크류방식의 입체주차 시스템
US488044A (en) John e
SU1442611A1 (ru) Установка дл вытрамбовывани котлованов
KR200254184Y1 (ko) 섬유질 로프 권상기구
JPS606062Y2 (ja) 移動止め機構の解除装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE LI NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010919

AKX Designation fees paid

Free format text: AT BE CH DE DK ES FI LI

AXX Extension fees paid

Free format text: AL PAYMENT 20010919;LT PAYMENT 20010919;LV PAYMENT 20010919;MK PAYMENT 20010919;RO PAYMENT 20010919;SI PAYMENT 20010919

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE LI NL PT SE

19U Interruption of proceedings before grant

Effective date: 20041029

19W Proceedings resumed before grant after interruption of proceedings

Effective date: 20050216

RIC1 Information provided on ipc code assigned before grant

Ipc: A62B 1/14 20060101AFI20070917BHEP

RIC1 Information provided on ipc code assigned before grant

Ipc: B66D 1/06 20060101ALN20070926BHEP

Ipc: A62B 1/14 20060101AFI20070926BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE LI NL PT SE

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69938572

Country of ref document: DE

Date of ref document: 20080605

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: PA ALDO ROEMPLER

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20080718

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20080401710

Country of ref document: GR

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: ALDO ROEMPLER PATENTANWALT;BRENDENWEG 11 POSTFACH 154;9424 RHEINECK (CH)

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20080423

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080423

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2306491

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20090126

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20090630

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20090616

Year of fee payment: 11

Ref country code: AT

Payment date: 20090623

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20090515

Year of fee payment: 11

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20110101

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100622

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100623

REG Reference to a national code

Ref country code: GR

Ref legal event code: ML

Ref document number: 20080401710

Country of ref document: GR

Effective date: 20110104

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20180605

Year of fee payment: 20

Ref country code: CH

Payment date: 20180608

Year of fee payment: 20

Ref country code: IE

Payment date: 20180605

Year of fee payment: 20

Ref country code: DK

Payment date: 20180606

Year of fee payment: 20

Ref country code: DE

Payment date: 20180606

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20180605

Year of fee payment: 20

Ref country code: BE

Payment date: 20180606

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20180704

Year of fee payment: 20

Ref country code: GB

Payment date: 20180606

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69938572

Country of ref document: DE

REG Reference to a national code

Ref country code: DK

Ref legal event code: EUP

Effective date: 20190622

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MK

Effective date: 20190622

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20190621

REG Reference to a national code

Ref country code: IE

Ref legal event code: MK9A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20190621

Ref country code: PT

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20190702

Ref country code: IE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20190622

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20200723

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20190623