EP0402518B1 - Dispositif de surveillance d'un câble suspendu - Google Patents

Dispositif de surveillance d'un câble suspendu Download PDF

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Publication number
EP0402518B1
EP0402518B1 EP19890111017 EP89111017A EP0402518B1 EP 0402518 B1 EP0402518 B1 EP 0402518B1 EP 19890111017 EP19890111017 EP 19890111017 EP 89111017 A EP89111017 A EP 89111017A EP 0402518 B1 EP0402518 B1 EP 0402518B1
Authority
EP
European Patent Office
Prior art keywords
monitoring device
current
cable monitoring
comparator
limit
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
EP19890111017
Other languages
German (de)
English (en)
Other versions
EP0402518A1 (fr
Inventor
Bernd Dipl.-Ing. Diewald
Gustav-Adolf Quednau
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to ES89111017T priority Critical patent/ES2043962T3/es
Priority to DE89111017T priority patent/DE58905703D1/de
Priority to EP19890111017 priority patent/EP0402518B1/fr
Publication of EP0402518A1 publication Critical patent/EP0402518A1/fr
Application granted granted Critical
Publication of EP0402518B1 publication Critical patent/EP0402518B1/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
    • 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
    • B66B5/12—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack
    • B66B5/125—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack electrical

Definitions

  • the invention relates to a hanging cable monitoring device for drum and bobbin conveyors in mining which have an electric drive motor, with means for detecting a load-dependent variable, a limit indicator and a comparator for comparing the load-dependent variable with the limit value.
  • a hanging rope monitoring device of the type specified at the outset in which by means of converters which convert a mechanical load into a corresponding electrical signal, a quantity corresponding to the load on the rope is determined and, after low-pass filtering, falls below a predetermined limit value is monitored.
  • the specified limit value or the electrical signal can be changed depending on the current conveying speed or conveying direction.
  • the object is achieved in that the torque-generating current component of the drive motor is detected as a load-dependent variable in the suspension cable monitoring device of the type mentioned at the outset, that the limit value transmitter is a limit current transmitter and that the comparator is a current-limit current comparator.
  • the monitoring of the rope condition is relocated to the carrier. This enables a special, fail-safe monitoring with good adaptation to the respective funding conditions.
  • An advantageous reduction in the response time can also be achieved.
  • the invention the advantageous monitoring of the torque-forming current component, relocates the monitoring of the cable condition to where the cable is moving.
  • a timing element in the current-limit current comparator compensates for fluctuations in cable force, the response time of which can advantageously be set. In this way, the respective operating conditions of the funding and the existing mass inertia can be taken into account.
  • Fig. 1 the force-displacement diagrams of a single drum machine in the acceleration and driving phase are separated from each other by the dotted line parallel to the force axis.
  • the dash-dotted line 3 in FIG. 1 denotes the force-displacement diagram for a conveyance with a maximum payload. The force resulting from the payload is of considerable negative magnitude.
  • the continuous line 2 shows the operation without a payload.
  • the basket and rope weight result in a negative magnitude of the force.
  • the broken line 1 shows the value of the force which occurs when a suspension rope condition occurs with a distance s traveled. The force curve then remains constant. The force is usually positive in the acceleration phase, while it becomes negative in the drive phase because the weight of the rope acts here.
  • the current-limit current comparator is designated 5. Its function is symbolically indicated, as is the function of the timing element 6. A signal 7 is emitted from the current-limit current comparator 5, which triggers a fault message and acts on a safety circuit that influences the carrier.
  • the signal 8 of the limit current transmitter 4 acts on the current-limit current comparator 5, as does the signal 9 for the adapted current, which is formed from the measured current 10 and a simulation signal 11 and 12.
  • the cable force signal 13, the torque-proportional signal 14 and the shaft depth signal 15 act on the limit current transmitter 4, which are formed from the directly measured variables 18, 19 with the aid of test and simulation variables 16 and 17 in FIGS. 20 and 21 for the torque size and the shaft depth will.

Landscapes

  • Control And Safety Of Cranes (AREA)
  • Control Of Electric Motors In General (AREA)

Claims (5)

  1. Dispositif de surveillance d'un câble suspendu pour des machines d'extraction à tambour et bobines dans l'industrie minière, qui possèdent un moteur d'entraînement électrique, comportant des moyens pour détecter une grandeur qui dépend de la charge, un générateur de valeur limite (4) et un comparateur (5) pour comparer la grandeur qui dépend de la charge, à la valeur limite, caractérisé par le fait que la composante de courant, qui établit le couple, du moteur d'entraînement est détectée en tant que grandeur dépendant de la charge, que le générateur de valeur limite est un générateur de courant limite (4) et que le comparateur est un comparateur courant-courant limite (5).
  2. Dispositif de surveillance d'un câble suspendu suivant la revendication 1, caractérisé par le fait que le comparateur courant - courant limite (5) comporte un circuit de temporisation (6).
  3. Dispositif de surveillance d'un câble suspendu suivant la revendication 1 ou 2, caractérisé par le fait que le comparateur courant - courant limite (5) possède une sortie de signaux (7) raccordée à un circuit de sécurité.
  4. Dispositif de surveillance d'un câble suspendu suivant la revendication 1, 2 ou 3, caractérisé par le fait que des signaux (13,18,19) relatifs à la force appliquée au câble, à l'accélération et au parcours du câble sont envoyés au générateur de courant limite (4).
  5. Dispositif de surveillance d'un câble suspendu suivant la revendication 4, caractérisé par le fait que les signaux de simulation (11,16,17) pour réaliser une adaptation aux conditions concernant le puits et la machine d'abattage, sont ajoutés aux signaux (10,18,19).
EP19890111017 1989-06-16 1989-06-16 Dispositif de surveillance d'un câble suspendu Expired - Lifetime EP0402518B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES89111017T ES2043962T3 (es) 1989-06-16 1989-06-16 Instalacion de supervision de cables de suspension.
DE89111017T DE58905703D1 (de) 1989-06-16 1989-06-16 Hängseil-Überwachungseinrichtung.
EP19890111017 EP0402518B1 (fr) 1989-06-16 1989-06-16 Dispositif de surveillance d'un câble suspendu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19890111017 EP0402518B1 (fr) 1989-06-16 1989-06-16 Dispositif de surveillance d'un câble suspendu

Publications (2)

Publication Number Publication Date
EP0402518A1 EP0402518A1 (fr) 1990-12-19
EP0402518B1 true EP0402518B1 (fr) 1993-09-22

Family

ID=8201513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890111017 Expired - Lifetime EP0402518B1 (fr) 1989-06-16 1989-06-16 Dispositif de surveillance d'un câble suspendu

Country Status (3)

Country Link
EP (1) EP0402518B1 (fr)
DE (1) DE58905703D1 (fr)
ES (1) ES2043962T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8768579B2 (en) 2011-04-14 2014-07-01 Harnischfeger Technologies, Inc. Swing automation for rope shovel
US9206587B2 (en) 2012-03-16 2015-12-08 Harnischfeger Technologies, Inc. Automated control of dipper swing for a shovel
US12018463B2 (en) 2021-06-08 2024-06-25 Joy Global Surface Mining Inc Swing automation for rope shovel

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA918868B (en) * 1991-11-08 1992-07-29 Siemens Ag Control monitoring system for a rope winding installation
US5992574A (en) * 1996-12-20 1999-11-30 Otis Elevator Company Method and apparatus to inspect hoisting ropes
FI20060596L (fi) * 2006-06-16 2007-12-17 Kone Corp Järjestely hissin köysihöltymän toteamiseksi

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930439A1 (de) * 1979-07-26 1981-02-05 Isetron Ind Sicherheits Elektr Ueberlastsicherung fuer ein hebezeug
AU548742B2 (en) * 1981-06-15 1986-01-02 Anglo American Corporation Of South Africa Limited Slack rope detecting apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8768579B2 (en) 2011-04-14 2014-07-01 Harnischfeger Technologies, Inc. Swing automation for rope shovel
US9315967B2 (en) 2011-04-14 2016-04-19 Harnischfeger Technologies, Inc. Swing automation for rope shovel
US9567725B2 (en) 2011-04-14 2017-02-14 Harnischfeger Technologies, Inc. Swing automation for rope shovel
US10227754B2 (en) 2011-04-14 2019-03-12 Joy Global Surface Mining Inc Swing automation for rope shovel
US11028560B2 (en) 2011-04-14 2021-06-08 Joy Global Surface Mining Inc Swing automation for rope shovel
US9206587B2 (en) 2012-03-16 2015-12-08 Harnischfeger Technologies, Inc. Automated control of dipper swing for a shovel
US9745721B2 (en) 2012-03-16 2017-08-29 Harnischfeger Technologies, Inc. Automated control of dipper swing for a shovel
US10655301B2 (en) 2012-03-16 2020-05-19 Joy Global Surface Mining Inc Automated control of dipper swing for a shovel
US12018463B2 (en) 2021-06-08 2024-06-25 Joy Global Surface Mining Inc Swing automation for rope shovel

Also Published As

Publication number Publication date
EP0402518A1 (fr) 1990-12-19
DE58905703D1 (de) 1993-10-28
ES2043962T3 (es) 1994-01-01

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