DE740810C - Mountain pressure indicator for Vorpfaender - Google Patents

Mountain pressure indicator for Vorpfaender

Info

Publication number
DE740810C
DE740810C DEH169164D DEH0169164D DE740810C DE 740810 C DE740810 C DE 740810C DE H169164 D DEH169164 D DE H169164D DE H0169164 D DEH0169164 D DE H0169164D DE 740810 C DE740810 C DE 740810C
Authority
DE
Germany
Prior art keywords
vorpfaender
pressure indicator
mountain pressure
pressure
pledge
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
Application number
DEH169164D
Other languages
German (de)
Inventor
Dr-Ing Hans Joachim Von Hippel
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.)
HANS JOACHIM VON HIPPEL DR ING
Original Assignee
HANS JOACHIM VON HIPPEL DR ING
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 HANS JOACHIM VON HIPPEL DR ING filed Critical HANS JOACHIM VON HIPPEL DR ING
Priority to DEH169164D priority Critical patent/DE740810C/en
Application granted granted Critical
Publication of DE740810C publication Critical patent/DE740810C/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/18—Special adaptations of signalling or alarm devices
    • E21F17/185—Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Description

Gebirgsdruckanzeiger für Vorpfänder Mit der Einführung der Abbaumaschinen ist eine sichere Vorpfändung immer dringlicher geworden und, da derartige Maschinen hinter sich in der Regel eine größere Hangendfläche unverbaut lassen. ist eine Beobachtung des Hangenddruckes notwendig. Man kennt bereits Möglichkeiten, den Druck, unter dem der eigentliche Stempel steht, erkennbar zu machen. Hier aber handelt es sich darum, den auf dem Vorpfänder ruhenden Druck im Auge zu behalten. Soweit der Vorpfänder nicht im Stoß Auflage findet, kann er als zweiarmiger Hebel betrachtet werden, der im mittleren Teil unterstützt ist durch den eigentlichen Stempel, während das rückwärtige Ende sich am Hangende abstützt. Ein solcher Vorpfänder wird sich bei verstärktem Druck an den Enden durchbiegen.Mountain pressure indicator for pre-pledges With the introduction of mining machines a secure pre-attachment has become more and more urgent and, since such machines As a rule, leave behind a larger hanging area unobstructed. is an observation of the hanging pressure necessary. One already knows the possibilities, the pressure, under on which the actual stamp stands, to make recognizable. But here it is about keeping an eye on the pressure on the pledge. So much for the pledge does not find support in the joint, it can be regarded as a two-armed lever that in the middle part is supported by the actual punch, while the rear End is supported on the hanging wall. Such a pre-pledge will be increased in the case of increased Bend pressure at the ends.

Erfindungsgemäß wird diese Durchbiegung dadurch sichtbar gemacht, daß an den Enden des Vorpfänders ein Band beispielsweise befestigt wird, dessen scheinbare Längung die Durchbiegung anzeigt.According to the invention, this deflection is made visible by that at the ends of the Vorpfänders a tape is attached, for example, whose apparent elongation indicates deflection.

Im Gegensatz zu bekannten Ausführungen, bei denen der Gebirgsdruck in der Stempellängsrichtung wirkt, wirkt er hier in der Querrichtung zum Konstruktionselement. Die Zeichnung zeigt ein Ausführungsbeispiel. An den Enden des Vorpfändbalkens a ist ein Stahlband b befestigt. Bei einer Durchbiegung des Balkens tt verändert sich der Abstand zwischen diesem und dem Band b, was an der Marke c sichtbar gemacht werden kann.In contrast to known designs, where the rock pressure acts in the longitudinal direction of the punch, it acts here in the transverse direction to the construction element. The drawing shows an embodiment. At the ends of the pre-pledging beam a a steel band b is attached. If the beam bends tt changes the distance between this and the band b, which is made visible at the mark c can be.

Für die Betriebssicherheit ist es wesentlich, daß das Auftreten eines gefährlichen Gebirgsdruckes sichtbar wird, noch bevor die Verformung des den Druck aufnehmenden Teils die Elastizitätsgrenze überschreitet. Erst dadurch wird es möglich, rechtzeitig den Ausbau zu verstärken.For operational safety it is essential that the occurrence of a dangerous rock pressure becomes visible even before the deformation of the pressure receiving part exceeds the elastic limit. Only then is it possible to strengthen the expansion in good time.

Claims (1)

PATENTANSPRUCH: Gebirgsdruckanzeiger für Vorpfänder, die an oder nahe ihrer Mitte aufgehängt bzw. unterstützt sind, gekennzeichnet durch ein än der Unterseite des Vorpfänders an oder nahe dessen Enden befestigtes Band o. dgl. Mittel, dessen scheinbare Verlängerung die elastische Durchbiegung des Vorpfänders anzeigt. Zur Abgrenzung des Anmeldungsgegenstandes vom Stand der Technik sind im Erteilungsverfahren keine Veröffentlichungen in Betracht gezogen worden.PATENT CLAIM: Mountain pressure gauges for pre-pledges that are at or near are suspended or supported in their middle, indicated by a än on the underside of the pledge at or near its ends attached tape o. The like. Means, its apparent elongation indicates the elastic deflection of the pre-pawn. To the The subject of the application is differentiated from the state of the art in the granting procedure no publications have been considered.
DEH169164D 1941-01-17 1941-01-17 Mountain pressure indicator for Vorpfaender Expired DE740810C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH169164D DE740810C (en) 1941-01-17 1941-01-17 Mountain pressure indicator for Vorpfaender

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH169164D DE740810C (en) 1941-01-17 1941-01-17 Mountain pressure indicator for Vorpfaender

Publications (1)

Publication Number Publication Date
DE740810C true DE740810C (en) 1943-10-28

Family

ID=7184329

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH169164D Expired DE740810C (en) 1941-01-17 1941-01-17 Mountain pressure indicator for Vorpfaender

Country Status (1)

Country Link
DE (1) DE740810C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE916641C (en) * 1948-10-02 1954-08-16 Gerhard Werner Extension element, especially for mechanized longwall mining
DE958642C (en) * 1947-09-05 1957-02-21 Wilhelm Reppel Device for improving the punch attack on shell irons and caps, in particular joint cap links, primarily in mining
DE971164C (en) * 1944-02-04 1958-12-18 F W Moll Soehne Maschinenfabri Pit punch head
DE974547C (en) * 1944-07-08 1961-02-02 Alexander Dr-Ing Schmidt Steel longwall mining
DE1267641B (en) * 1966-03-05 1968-05-09 Hansjoachim Von Hippel Dr Ing Stamp extension that can be moved under load

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971164C (en) * 1944-02-04 1958-12-18 F W Moll Soehne Maschinenfabri Pit punch head
DE974547C (en) * 1944-07-08 1961-02-02 Alexander Dr-Ing Schmidt Steel longwall mining
DE958642C (en) * 1947-09-05 1957-02-21 Wilhelm Reppel Device for improving the punch attack on shell irons and caps, in particular joint cap links, primarily in mining
DE916641C (en) * 1948-10-02 1954-08-16 Gerhard Werner Extension element, especially for mechanized longwall mining
DE1267641B (en) * 1966-03-05 1968-05-09 Hansjoachim Von Hippel Dr Ing Stamp extension that can be moved under load

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