DE1022855B - A band brake that can be released by a pressure medium against the brake closing force, especially for lifts to deep drilling rigs - Google Patents

A band brake that can be released by a pressure medium against the brake closing force, especially for lifts to deep drilling rigs

Info

Publication number
DE1022855B
DE1022855B DEE13107A DEE0013107A DE1022855B DE 1022855 B DE1022855 B DE 1022855B DE E13107 A DEE13107 A DE E13107A DE E0013107 A DEE0013107 A DE E0013107A DE 1022855 B DE1022855 B DE 1022855B
Authority
DE
Germany
Prior art keywords
brake
pressure medium
released
drilling rigs
closing force
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.)
Pending
Application number
DEE13107A
Other languages
German (de)
Inventor
Hans Mueller
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEE13107A priority Critical patent/DE1022855B/en
Publication of DE1022855B publication Critical patent/DE1022855B/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/08—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360 degrees
    • F16D49/12—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360 degrees fluid actuated

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Description

Durch ein Druckmittel entgegen der Bremsschließkraft lösbare Bandbremse, insbesondere für Hebewerke zu Tiefbohranlagen Es sind insbesondere an Hebewerken für Tiefbohranlagen angeordnete Bandbremsen gebräuchlich, die mit einem die Bremse normalerweise geschlossen haltenden Kraftspeicher, z. B. einer Schraubenfeder od. dgl., versehen sind. Auf diesen Kraftspeicher kann ein in einem Zylinder gleitender, von einem Druckmittel beaufschlagbarer Kolben derart arbeiten, daß sich die Bremse bei auf den Kolben einwirkendem Druckmittel entgegen der Kraft der Feder löst.A band brake that can be released by a pressure medium against the brake closing force, especially for hoists to deep drilling rigs There are especially to hoists Band brakes arranged for deep drilling rigs are common, with one the brake normally closed holding energy storage, z. B. a coil spring od. Like., Are provided. A cylinder sliding in a cylinder can be applied to this energy storage device. piston pressurized by a pressure medium work in such a way that the brake releases when pressure medium acts on the piston against the force of the spring.

Zwecks Erzielung einer feinfühligen Regelbarkeit der Bremskraft wurde bei solchen Bremsen schon vorgeschlagen, als Steuerorgan zur Regelung des dem Brernslüftzylinder zugeführten Druckmittels ein sogenanntes »Feinregelventil« zu verwenden. Es hat sich jedoch, nicht zuletzt infolge der zwischen Kolben und Bremslüftzylinder vorhandenen Reibung, erwiesen, daß auch eine mit einem Feinregelventil ausgestattete Bremse- der vorstehend genannten Art noch zu hart arbeitet, da das Druckmittel nach Überwindung der erwähnten Reibung plötzlich und schlagartig auf den Kraftspeicher wirkt.In order to achieve a sensitive controllability of the braking force was already proposed for such brakes as a control element to regulate the brake release cylinder supplied pressure medium to use a so-called »fine control valve«. It has however, not least because of the existing between the piston and the brake release cylinder Friction, it has been proven that a brake valve equipped with a precision control valve of the type mentioned above is still working too hard, since the pressure medium after overcoming the aforementioned friction acts suddenly and abruptly on the energy storage device.

Die Erfindung bezweckt die Beseitigung dieses Mangels. Sie will eine Bremse schaffen, die sowohl durch erhebliche Verringerung der im Breinslüftzylinder vorhandenen Reibung als auch durch die Möglichkeit eines stufenweise erfolgenden Druckmittelaufbaues mit Sicherheit eine feinfühlige Regelbarkeit gewährleistet. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß im Druckmittelzylinder mindestens zwei nacheinander über ein jeweils zugeordnetes Feinregelventil mit Druckmittel beaufschlagbare und ebenfalls nacheinander auf den die Bremse schließenden Kraftspeicher einwirkende Membranen vorgesehen sind.The invention aims to remedy this deficiency. She wants one Create brake, both by significantly reducing the air release cylinder existing friction as well as the possibility of a gradual process Pressure medium build-up with security a sensitive controllability guaranteed. According to the invention, this object is achieved in that at least two in succession via a fine control valve assigned to each with pressure medium can be acted upon and also successively on the energy storage device that closes the brake acting membranes are provided.

Die Zeichnung stellt in schematischer Weise ein Ausführungsbeispiel der Erfindung dar.The drawing shows an exemplary embodiment in a schematic manner of the invention.

Die Bandbremse 1 ist normalerweise durch einen Kraftspeicher, z. B. die Schraubenfeder 2, geschlossen und wird durch ein Druckmittel gelüftet. Zu diesem Zweck ist ein Druckmittelzylinder 3 vorgesehen, in dem erfindungsgemäß mindestens zwei Membranen 4 bzw. 4' angeordnet sind. Jeder dieser Membranen 4 und 4' ist ein Feinregelventil 5 bzw. 5' zugeordnet. Durch Betätigung des Hebels 6 wird zunächst die Membran 4 über das Feinregelventil 5 und sodann die Membran 4' über das Ventil 5' mit Druckmittel beaufschlagt, so daß beide Membranen nacheinander auf den Kraftspeicher 2 einwirken.The band brake 1 is normally through an energy storage device, e.g. B. the coil spring 2 is closed and is released by a pressure medium. To this Purpose is a pressure medium cylinder 3 is provided in which according to the invention at least two membranes 4 and 4 'are arranged. Each of these membranes 4 and 4 'is a Fine control valve 5 or 5 'assigned. By operating the lever 6 is first the membrane 4 via the fine control valve 5 and then the membrane 4 'via the valve 5 'acted upon with pressure medium, so that both membranes successively on the energy storage device 2 act.

Claims (1)

PATENTANSPRUCH: Durch ein Druckmittel entgegen der Bremsschließkraft lösbare Bandbremse, insbesondere für Hebewerke zu Tiefbohranlagen, dadurch gekennzeichnet, daß im Druckmittelzylinder (3 mindestens zwei nacheinander über ein jeweils zugeordnetes Feinregelventil (5 bzw. 5') mit Druckmittel beaufschlagbare und ebenfalls nacheinander auf den die Bremse (1) schließenden Kraftspeicher (2) einwirkende Membranen (4 hzw. 4`) vorgesehen sind.PATENT CLAIM: By means of a pressure medium against the brake closing force releasable band brake, in particular for lifting works for deep drilling rigs, characterized in that that in the pressure cylinder (3 at least two consecutively via a respectively associated Fine control valve (5 or 5 ') pressurized with pressure medium and also one after the other on the brake (1) closing energy storage device (2) acting membranes (4 hzw. 4`) are provided.
DEE13107A 1956-10-19 1956-10-19 A band brake that can be released by a pressure medium against the brake closing force, especially for lifts to deep drilling rigs Pending DE1022855B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE13107A DE1022855B (en) 1956-10-19 1956-10-19 A band brake that can be released by a pressure medium against the brake closing force, especially for lifts to deep drilling rigs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE13107A DE1022855B (en) 1956-10-19 1956-10-19 A band brake that can be released by a pressure medium against the brake closing force, especially for lifts to deep drilling rigs

Publications (1)

Publication Number Publication Date
DE1022855B true DE1022855B (en) 1958-01-16

Family

ID=7068491

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE13107A Pending DE1022855B (en) 1956-10-19 1956-10-19 A band brake that can be released by a pressure medium against the brake closing force, especially for lifts to deep drilling rigs

Country Status (1)

Country Link
DE (1) DE1022855B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3205785A (en) * 1963-01-24 1965-09-14 Arnold H Hoffer Safety brake actuating device
EP0136971A2 (en) * 1983-10-06 1985-04-10 GebràœDer Sulzer Aktiengesellschaft Braking device for a loom

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3205785A (en) * 1963-01-24 1965-09-14 Arnold H Hoffer Safety brake actuating device
EP0136971A2 (en) * 1983-10-06 1985-04-10 GebràœDer Sulzer Aktiengesellschaft Braking device for a loom
EP0136971A3 (en) * 1983-10-06 1986-04-16 Gebruder Sulzer Aktiengesellschaft Braking device for a loom

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