DE866332C - cap - Google Patents

cap

Info

Publication number
DE866332C
DE866332C DER6276A DER0006276A DE866332C DE 866332 C DE866332 C DE 866332C DE R6276 A DER6276 A DE R6276A DE R0006276 A DER0006276 A DE R0006276A DE 866332 C DE866332 C DE 866332C
Authority
DE
Germany
Prior art keywords
section
diagonals
cross
cap
hollow cross
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
DER6276A
Other languages
German (de)
Inventor
Ernst Kreissig
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.)
Ringfeder GmbH
Original Assignee
Ringfeder GmbH
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 Ringfeder GmbH filed Critical Ringfeder GmbH
Priority to DER6276A priority Critical patent/DE866332C/en
Application granted granted Critical
Publication of DE866332C publication Critical patent/DE866332C/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/01—Caps for supporting mine roofs characterised by the shape of the cap, e.g. of specified cross-section

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)
  • Body Structure For Vehicles (AREA)

Description

Die Erfindung bezieht sich auf eine Kappe in Leichtmetall, die sich durch Biege- und Torsionsfastigkeit bzw. hohe Knickfestigkeit auszeichnet. Ihre Herstellung erfolgt wirtschaftlich durch Strangpressen.The invention relates to a cap in light metal that characterized by flexural and torsional fastness and high buckling strength. Her Production takes place economically by extrusion.

Es sind bereits Kappen bekannt, die aus einem Hohlprofil bestehen, dreieckigen Querschnitt besitzen und gegebenenfalls durch ein Füllstück in Gestalt eines aufrecht stehenden Flacheisens oder eines durchgehenden Steges armiert sind. Bei diesen bekannten Konstruktionen besteht die Gefahr, daß sich bei hohen Drücken die Seitenwände verformen oder der Querschnitt durch Torsion verzerrt wird.There are already known caps that consist of a hollow profile, have a triangular cross-section and optionally by a filler in shape an upright flat iron or a continuous bar are reinforced. In these known constructions there is a risk that at high pressures deform the side walls or the cross-section is distorted by torsion.

Die Erfindung verbessert die bekannten Konstruktionen, der Kappen mit Hohlquerschnitt dadurch, daß in diesem Hohlquerschnitt Diagonalen angeordnet sind und die freie Länge dieser Diagonalen durch unterschiedliche Dickenbemessung gleichmäßig knickfest gestaltet isst. In der Zeichnung ist der Gegenstand der Erfindung in einer Abbildung im Querschnitt dargestellt.The invention improves the known constructions, the caps with a hollow cross-section in that diagonals are arranged in this hollow cross-section and the free length of these diagonals due to different thickness measurements eats evenly kink-proof. In the drawing is the subject of the invention shown in a figure in cross section.

Die in bekannter Weise mit trapezförmigem Querschnitt ausgebildete Kappe besitzt die Diagonalen a, b, c und d, wobei die Diagonalen a und b entsprechend ihrer größeren Länge einen stärkeren Querschnitt erhalten als die Diagonalen c und d, um auf diese Weise gleiche Knick- und Beulfestigkeiten für sämtliche Diagonalen zu erreichen.The cap, which is designed in a known manner with a trapezoidal cross-section, has the diagonals a, b, c and d, the diagonals a and b being given a thicker cross-section than the diagonals c and d in accordance with their greater length, in order to ensure the same buckling and buckling strengths reachable for all diagonals.

Claims (1)

PATENTANSPRUCH: Kappe aus Leichtmetall mit einem Hohlquerschnitt, dadurch gekennzeichnet, daß in dem Hohlquerschnitt Diagonalen angeordnet sind, deren freie Länge dadurch gleichmäßig knickfest gestaltet wird,. daß die Wandstärken den freien Längen entsprechend unterschiedlich bemessen sind.PATENT CLAIM: Cap made of light metal with a hollow cross-section, characterized in that diagonals are arranged in the hollow cross-section, the free length is designed to be evenly kink-resistant. that the wall thicknesses the free lengths are dimensioned differently accordingly.
DER6276A 1951-07-06 1951-07-06 cap Expired DE866332C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER6276A DE866332C (en) 1951-07-06 1951-07-06 cap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER6276A DE866332C (en) 1951-07-06 1951-07-06 cap

Publications (1)

Publication Number Publication Date
DE866332C true DE866332C (en) 1953-02-09

Family

ID=7397286

Family Applications (1)

Application Number Title Priority Date Filing Date
DER6276A Expired DE866332C (en) 1951-07-06 1951-07-06 cap

Country Status (1)

Country Link
DE (1) DE866332C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032706B (en) * 1955-06-25 1958-06-26 Gutehoffnungshuette Sterkrade Pit removal cap
DE1111582B (en) * 1956-11-26 1961-07-27 Karl Gerlach Cap for the pit made of steel or light metal with a box profile
EP0117893A2 (en) * 1983-03-02 1984-09-12 Martha-Catharina Heiliger Hinged cap for an underground support

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032706B (en) * 1955-06-25 1958-06-26 Gutehoffnungshuette Sterkrade Pit removal cap
DE1111582B (en) * 1956-11-26 1961-07-27 Karl Gerlach Cap for the pit made of steel or light metal with a box profile
EP0117893A2 (en) * 1983-03-02 1984-09-12 Martha-Catharina Heiliger Hinged cap for an underground support
EP0117893A3 (en) * 1983-03-02 1986-10-08 Martha-Catharina Heiliger Hinged cap for an underground support

Similar Documents

Publication Publication Date Title
DE866332C (en) cap
DE2260681A1 (en) LIGHT ALLOY BOARD FOR PLATFORM VEHICLES
DE7907810U1 (en) SECURITY RUNG
CH649741A5 (en) ANTI-SLIP CHAIN FOR VEHICLE TIRES.
DE1578710B2 (en) Metal skis
DE898998C (en) Car body framework, especially for large vehicles
DE1704267U (en) PROFILE.
DE584982C (en) Waveguide, consisting of a tube made seamlessly or with only one seam
DE728557C (en) bearings
DE561942C (en) Wall dowel sleeve
DE694540C (en) Iron mine support
DE649480C (en) Reinforcement arranged loosely or detachably at the ends of the pit lining parts
DE2310660C2 (en) Frame-shaped expansion for routes of underground operations, tunnels or the like
DE956805C (en) Precast concrete stairs
DE865650C (en) Knot connection for pipe trusses and method for producing a suitable pipe end
DE635328C (en) Extendable fire brigade ladder made of metal with spars designed as trusses
AT123272B (en) Network staff.
DE672691C (en) Reinforced concrete skeleton for buildings of all kinds made of hollow reinforced concrete bodies ready for installation
DE480318C (en) Suspensions on scales with an easily replaceable safety device
DE563322C (en) Trusses, especially for aircraft
DE857268C (en) Steel reinforcement for concrete
DE347063C (en) Method of making grate grids
DE702912C (en) Rolling grilles made of tubular or double tubular cross bars, which are connected by intermediate links
DE675646C (en) Extendable fire ladder
DE1260218B (en) Zipper