DE487940C - Resilient iron pit stamp - Google Patents
Resilient iron pit stampInfo
- Publication number
- DE487940C DE487940C DEM88473D DEM0088473D DE487940C DE 487940 C DE487940 C DE 487940C DE M88473 D DEM88473 D DE M88473D DE M0088473 D DEM0088473 D DE M0088473D DE 487940 C DE487940 C DE 487940C
- Authority
- DE
- Germany
- Prior art keywords
- wedge
- pit stamp
- iron pit
- resilient iron
- stamp
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 6
- 229910052742 iron Inorganic materials 0.000 title claims description 3
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Adjustable Resistors (AREA)
Description
Nachgiebiger eiserner Grubenstempel Die bisher verwendeten Abbaustempel setzen die Deformationsarbeit des Hangenden in mechanische Arbeit um, welche teils durch Reibung, teils durch Zusammenquetschen eines Holzkörpers vernichtet wird.Resilient iron pit stamp The mining stamps previously used convert the deformation work of the hanging wall into mechanical work, some of which is destroyed by friction, partly by squeezing a body of wood.
Die reinen Reibungsstempel sind bisher wenig in Anwendung. Sie haben den Nachteil, daß ihr Widerstand nicht gesteigert werden kann, da die Reibungsflächen mit einer konstanten Kraft aufeinandergepreßt werden, und daß ihr EViderstand bei Eintritt der Bewegung geringer wird, da die Reibungszahl der Bewegung kleiner ist als die der Ruhe.The pure friction stamps have so far been little used. They have the disadvantage that their resistance can not be increased because the friction surfaces are pressed together with a constant force, and that their resistance is at Occurrence of the movement is lower because the coefficient of friction of the movement is smaller than that of rest.
Die Erfindung richtet sich darauf, diese -Nachteile zu vermeiden, indem sie Einrichtungen schafft, die den Gebirgsdruck umwandeln in einen Druck von unten nach oben und in dieser Umsetzung durch Reibungsflächen dem wachsenden Stempeldruck wachsenden Widerstand entgegensetzt. Der geringere Widerstand der Bewegungsreibung wird durch einen Zusatzwiderstand ausgeglichen.The invention aims to avoid these disadvantages, by creating facilities that convert the mountain pressure into a pressure of from the bottom to the top and, in this implementation, the growing stamp pressure due to friction surfaces opposes growing resistance. The lower resistance to movement friction is compensated by an additional resistor.
In der Zeichnung ist die Erfindung in einem Ausführungsbeispiel zur Darstellung gebracht, Das Oberteil a schiebt sich durch den Gebirgsdruck in die Säule b ein, hierbei drückt die Schrägfläche c des Oberteils gegen den Verschiebungskörperd und verschiebt ihn horizontal nach links. Der Verschiebungskörper hat auf der dem Oberteil abgewendeten Seite wieder eine Schrägfläche und drückt hiermit einen zweiten Verschiebungskörper. e nach oben. Der Reibungswiderstand anden fünf Reibungsflächen wächst mit Zunahme des Gebirgsdrucks und stellt den Gleichgewichtszustand wieder her. Reicht er im Zustand der Bewegung nicht aus, dann drückt auf den letzten Verschiebungskörper eine Zusatzkraft von oben nach unten gegen den durch die Übersetzung umgekehrten Gebirgsdruck.In the drawing, the invention is in one embodiment for Brought to the representation, the upper part a pushes itself through the mountain pressure into the Column b a, here the inclined surface c of the upper part presses against the displacement body d and moves it horizontally to the left. The displacement body has on the The side facing away from the upper part again has an inclined surface and thus presses a second one Displacement body. e up. The frictional resistance on the five friction surfaces grows as the rock pressure increases and restores the equilibrium here. If it is not sufficient in the state of movement, then press on the last displacement body an additional force from top to bottom against the one reversed by the translation Mountain pressure.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM88473D DE487940C (en) | Resilient iron pit stamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM88473D DE487940C (en) | Resilient iron pit stamp |
Publications (1)
Publication Number | Publication Date |
---|---|
DE487940C true DE487940C (en) | 1929-12-17 |
Family
ID=7321029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM88473D Expired DE487940C (en) | Resilient iron pit stamp |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE487940C (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE746107C (en) * | 1934-10-27 | 1944-06-08 | Friedrich Heckermann | Iron pit stamp |
DE747631C (en) * | 1935-04-04 | 1944-10-06 | Friedrich Heckermann | Iron pit stamp |
DE767659C (en) * | 1935-07-30 | 1953-05-04 | Gerlach Karl | Iron pit stamp, the wedge-shaped inner stamp of which is under the effect of wedges, which lie against the inner stamp with separate surfaces |
DE901763C (en) * | 1936-02-19 | 1954-01-14 | Ferdinand Wigand | Pit stamp |
DE902365C (en) * | 1936-07-30 | 1954-01-21 | Rudolf Spolders | Hiking pillar |
DE926061C (en) * | 1935-01-11 | 1955-04-04 | Christine Wilhelmine Heckerman | Steel pit punch |
DE933502C (en) * | 1935-07-12 | 1955-09-29 | Gutehoffnungshuette Sterkrade | Two-part, iron pit stamp |
US2727767A (en) * | 1952-04-16 | 1955-12-20 | Rowan Lee Co | Locking devices for sliding sections |
DE937221C (en) * | 1936-08-04 | 1955-12-29 | Gerlach Karl | Steel pit stamp |
DE938002C (en) * | 1935-05-21 | 1956-01-26 | Karl Gerlach | Steel pit stamp |
DE971631C (en) * | 1934-11-23 | 1959-03-05 | Gerlach Karl | Iron pit stamp |
-
0
- DE DEM88473D patent/DE487940C/en not_active Expired
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE746107C (en) * | 1934-10-27 | 1944-06-08 | Friedrich Heckermann | Iron pit stamp |
DE971631C (en) * | 1934-11-23 | 1959-03-05 | Gerlach Karl | Iron pit stamp |
DE926061C (en) * | 1935-01-11 | 1955-04-04 | Christine Wilhelmine Heckerman | Steel pit punch |
DE747631C (en) * | 1935-04-04 | 1944-10-06 | Friedrich Heckermann | Iron pit stamp |
DE938002C (en) * | 1935-05-21 | 1956-01-26 | Karl Gerlach | Steel pit stamp |
DE933502C (en) * | 1935-07-12 | 1955-09-29 | Gutehoffnungshuette Sterkrade | Two-part, iron pit stamp |
DE767659C (en) * | 1935-07-30 | 1953-05-04 | Gerlach Karl | Iron pit stamp, the wedge-shaped inner stamp of which is under the effect of wedges, which lie against the inner stamp with separate surfaces |
DE901763C (en) * | 1936-02-19 | 1954-01-14 | Ferdinand Wigand | Pit stamp |
DE902365C (en) * | 1936-07-30 | 1954-01-21 | Rudolf Spolders | Hiking pillar |
DE937221C (en) * | 1936-08-04 | 1955-12-29 | Gerlach Karl | Steel pit stamp |
US2727767A (en) * | 1952-04-16 | 1955-12-20 | Rowan Lee Co | Locking devices for sliding sections |
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