EP0592755B1 - Hydraulikeinheit - Google Patents

Hydraulikeinheit Download PDF

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Publication number
EP0592755B1
EP0592755B1 EP92890220A EP92890220A EP0592755B1 EP 0592755 B1 EP0592755 B1 EP 0592755B1 EP 92890220 A EP92890220 A EP 92890220A EP 92890220 A EP92890220 A EP 92890220A EP 0592755 B1 EP0592755 B1 EP 0592755B1
Authority
EP
European Patent Office
Prior art keywords
piston rod
piston
lines
tube
hydraulic unit
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
EP92890220A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0592755A1 (de
Inventor
Manfred Baumruck
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.)
Alcatel Lucent Austria AG
Original Assignee
Alcatel Austria 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
Priority to AT0008891A priority Critical patent/AT397790B/de
Priority to SK92-92A priority patent/SK278766B6/sk
Priority to CS9292A priority patent/CZ279880B6/cs
Priority to PL92293175A priority patent/PL166317B1/pl
Priority to HU9200124A priority patent/HU210589B/hu
Application filed by Alcatel Austria AG filed Critical Alcatel Austria AG
Priority to ES92890220T priority patent/ES2078724T3/es
Priority to DE59203049T priority patent/DE59203049D1/de
Priority to EP92890220A priority patent/EP0592755B1/de
Publication of EP0592755A1 publication Critical patent/EP0592755A1/de
Application granted granted Critical
Publication of EP0592755B1 publication Critical patent/EP0592755B1/de
Priority to GR950402122T priority patent/GR3017003T3/el
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/04—Fluid-pressure devices for operating points or scotch-blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L7/00—Remote control of local operating means for points, signals, or track-mounted scotch-blocks
    • B61L7/06—Remote control of local operating means for points, signals, or track-mounted scotch-blocks using electrical transmission
    • B61L7/066—Remote control of local operating means for points, signals, or track-mounted scotch-blocks using electrical transmission using electrically controlled fluid-pressure operated driving means

Definitions

  • the invention relates to a hydraulic unit for switch actuation, with an axially displaceably arranged cylinder sealed on a piston rod, bilateral piston rod, which has tapping elements for actuating adjusting elements, and with pressure medium lines arranged in the piston rod, which have working spaces in the cylinder on both sides of the piston - Connect the discharge line for the hydraulic medium.
  • Hydraulic cylinder-piston units or generally pressure-medium-actuated (ie also pneumatic) units of this type have long been known in various designs for a number of very different purposes and advantageously enable large forces with a simple structure and compact dimensions.
  • the cylinders including lines and control elements, are arranged in a fixed manner and the piston acts on any actuating or adjusting elements via a piston rod projecting out of the cylinder on one or both sides
  • arrangements have also become known in which the piston rod protruding from the cylinder on both sides is fixedly mounted and the cylinder is displaced in accordance with the pressure medium applied to actuate adjusting elements or the like.
  • a hydraulic unit of the type mentioned at the outset has become known, which serves as a point machine and is provided with a piston rod drilled on both sides up to the area of the piston in order to avoid exposed or freely laid pressure medium lines, over which the working spaces with those arranged on the bearing plates for the piston rod or the push rod Supply and discharge lines for the pressure medium are connected.
  • a particular disadvantage here is the fact that relatively long pressure medium lines result, a part of which in turn must be laid away freely from a pump and control unit.
  • the object of the present invention is to improve a hydraulic unit of the type mentioned at the outset in such a way that the disadvantages mentioned are avoided and in particular that a more compact design with fewer oil paths is possible while avoiding the need to lay exposed lines.
  • the piston rod side which has the pressure medium lines, has, in a bore extending axially into the piston region, a tube inserted to form an annular gap sealed at both ends, the interior of which as one of the pressure medium lines in the piston region via at least one connecting line is connected to the working space assigned to the other piston rod side, the Annular gap in the piston area than the other pressure medium line is connected via at least one further connecting line to the working space assigned to the pierced piston rod side.
  • This configuration enables the hydraulic unit to be manufactured in a very simple manner, with relatively large cross sections for the pressure medium lines which can further contribute to a reduction in the flow resistances in the path of the pressure medium.
  • a largely symmetrical design of the pressure medium lines for the two usually also symmetrically designed working spaces is possible, which creates the same conditions for the two possible directions of movement.
  • the tube used can end before the piston-side end of the bore, the annular gap being sealed in this area by means of an annular seal. This measure simplifies the manufacture of the hydraulic unit and nevertheless ensures the required seal between the interior of the tube used and the annular gap.
  • connection part which has connecting bores from the inlet and outlet connections to the interior of the tube or to the gap.
  • the supply and discharge of the pressure medium thus take place at this connection part, which can also be arranged directly on a pump or control unit, for example, and again symmetrical conditions can be created very easily via the design of the connecting bores.
  • the hydraulic unit shown has an axially displaceable cylinder 3 arranged on a piston rod 2 which is fixed on both sides and which is sealed and which, for example, is molded in the die-cast tapping elements 4, which are designed here as holes 6 provided with tabs 6, for actuating adjusting elements (not shown) wearing.
  • These adjustment members can include, for example, one or more push rods for switching a rail switch or the like.
  • the piston rod side 14 which has the pressure medium lines 10, 11, has in a bore 17 running axially into the region of the piston 1 a tube 21 inserted to form an annular gap 20 sealed at both ends 18, 19.
  • the interior 22 of this tube 21 is connected as the one pressure medium line 11 in the area of the piston 1 via connecting lines 23 to the working space 8 assigned to the other piston rod side 15.
  • the annular gap 20 serves as another pressure medium line 10 and is in turn in the area of the piston 1 via others Connecting lines 24 are connected to the working space 9 assigned to the pierced piston rod side 14.
  • the tube 21 used ends here before the piston-side end of the bore 17, the annular gap 20 being sealed in the region of its end 18 on this side by means of an annular seal 25.
  • the cylinder 3 moves according to the respective pressure medium supply and discharge via the supply and discharge connections 12 and 13 along the Double arrow 29 and takes over the tapping elements 4, the adjusting elements, not shown, or the like. Also not shown here are the necessary pump or control units which supply or discharge pressure medium via the supply and discharge connections 12, 13 accordingly for the desired implementation of this movement.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
EP92890220A 1991-01-16 1992-10-14 Hydraulikeinheit Expired - Lifetime EP0592755B1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
AT0008891A AT397790B (de) 1991-01-16 1991-01-16 Hydraulikeinheit
CS9292A CZ279880B6 (cs) 1991-01-16 1992-01-13 Hydraulická jednotka, určená zejména pro přestavování železničních výhybek
SK92-92A SK278766B6 (sk) 1991-01-16 1992-01-13 Hydraulická jednotka, určená najmä na prestavovani
PL92293175A PL166317B1 (pl) 1991-01-16 1992-01-14 Jednostka hydrauliczna PL PL PL PL PL
HU9200124A HU210589B (en) 1991-01-16 1992-01-15 Hydraulic unit
ES92890220T ES2078724T3 (es) 1991-01-16 1992-10-14 Unidad hidraulica.
DE59203049T DE59203049D1 (de) 1991-01-16 1992-10-14 Hydraulikeinheit.
EP92890220A EP0592755B1 (de) 1991-01-16 1992-10-14 Hydraulikeinheit
GR950402122T GR3017003T3 (en) 1991-01-16 1995-08-02 Hydraulic unit.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0008891A AT397790B (de) 1991-01-16 1991-01-16 Hydraulikeinheit
EP92890220A EP0592755B1 (de) 1991-01-16 1992-10-14 Hydraulikeinheit

Publications (2)

Publication Number Publication Date
EP0592755A1 EP0592755A1 (de) 1994-04-20
EP0592755B1 true EP0592755B1 (de) 1995-07-26

Family

ID=25591405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92890220A Expired - Lifetime EP0592755B1 (de) 1991-01-16 1992-10-14 Hydraulikeinheit

Country Status (9)

Country Link
EP (1) EP0592755B1 (pl)
AT (1) AT397790B (pl)
CZ (1) CZ279880B6 (pl)
DE (1) DE59203049D1 (pl)
ES (1) ES2078724T3 (pl)
GR (1) GR3017003T3 (pl)
HU (1) HU210589B (pl)
PL (1) PL166317B1 (pl)
SK (1) SK278766B6 (pl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19631174A1 (de) * 1996-08-05 1998-02-12 Butzbacher Weichenbau Gmbh Stelleinrichtung
ATE335642T1 (de) 2001-01-11 2006-09-15 Vae Gmbh Einrichtung zum verstellen und verriegeln von beweglichen weichenteilen
CN106439007B (zh) * 2016-06-30 2018-11-02 德阳万达重型机械设备制造有限公司 一种高强度等静压机工作缸及其制备工艺

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT15472B (pl) * 1900-03-07 1904-03-10 Murray Corrington
DE878214C (de) * 1951-12-22 1953-06-01 Gustav Strunk G M B H Maschf Weichenstellvorrichtung, vornehmlich fuer den Untertagebetrieb
GB948463A (en) * 1959-06-26 1964-02-05 Westinghouse Air Brake Co Improvements relating to railway traffic controlling apparatus
DE1155159B (de) * 1960-02-16 1963-10-03 Krug & Co Heinrich Hydraulische Weichenstellvorrichtung
DE1168948B (de) * 1960-08-16 1964-04-30 Krug & Co Heinrich Weichenstellvorrichtung
DE2557574C3 (de) * 1975-12-20 1987-01-22 Fabeg Gmbh, 7518 Bretten Hydraulischer Weichenantrieb
US4428552A (en) * 1981-05-04 1984-01-31 Abex Corporation Railroad switch machine

Also Published As

Publication number Publication date
EP0592755A1 (de) 1994-04-20
HU210589B (en) 1995-05-29
AT397790B (de) 1994-06-27
SK278766B6 (sk) 1998-02-04
DE59203049D1 (de) 1995-08-31
ES2078724T3 (es) 1995-12-16
CS9292A3 (en) 1992-08-12
GR3017003T3 (en) 1995-11-30
PL166317B1 (pl) 1995-05-31
HUT63231A (en) 1993-07-28
CZ279880B6 (cs) 1995-08-16
ATA8891A (de) 1993-11-15
HU9200124D0 (en) 1992-04-28
PL293175A1 (en) 1992-09-21

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