EP0016747A1 - Ventilanordnung für die Steuerung des Hubes eines teleskopisch ausfahrbaren Stempels - Google Patents

Ventilanordnung für die Steuerung des Hubes eines teleskopisch ausfahrbaren Stempels Download PDF

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Publication number
EP0016747A1
EP0016747A1 EP80890013A EP80890013A EP0016747A1 EP 0016747 A1 EP0016747 A1 EP 0016747A1 EP 80890013 A EP80890013 A EP 80890013A EP 80890013 A EP80890013 A EP 80890013A EP 0016747 A1 EP0016747 A1 EP 0016747A1
Authority
EP
European Patent Office
Prior art keywords
valve
pressure
line
punch
controlled
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.)
Withdrawn
Application number
EP80890013A
Other languages
German (de)
English (en)
French (fr)
Inventor
Reinhard Dipl.-Ing. Neuper
Gottfried Siebenhofer
Heinrich Süssenbeck
Alfred Zitz
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.)
Voestalpine AG
Original Assignee
Voestalpine 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
Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0016747A1 publication Critical patent/EP0016747A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type

Definitions

  • the invention relates to a valve arrangement for controlling the stroke of a telescopically extendable stamp which has a fixed lower stamp, a central stamp guided therein and at least one upper stamp guided in the central stamp, at least one valve being controlled as a function of the displacement path of the central stamp.
  • telescopically extendable stamps are used, for example, in mine construction.
  • the setting of such stamps is usually carried out in such a way that first the stamp with the larger diameter and then the stamp with the smaller diameter is extended.
  • the invention now aims to control a multi-telescopically extendable stamp by a stamp switching valve so that the setting over the stamp with the larger diameter, that is, the larger cross-sectional area, takes place so that the tension or setting load despite constant pressure due to correspondingly larger effective cross-sectional area reaches a higher proportion of the nominal load.
  • the valve arrangement according to the invention is characterized in that this is a function of Displacement of the center punch controlled valve switched on in a line to a working space of the center punch limits the setting stroke of the center punch before reaching its greatest setting stroke and releases the setting stroke of an upper punch and that at least one pressure medium controlled valve is provided in a line from a predatory area of an upper punch, which closes when a predetermined pressure in the setting space of this upper punch closes, the pressure medium-controlled valve assigned to the last upper punch opens the valve controlled by the displacement path of the central punch and the application of pressure to the central punch with a pressure exceeding the predetermined pressure of the pressure-controlled valve (s) as the setting pressure enables.
  • Such a valve arrangement can easily achieve a setting load of up to 80% of the nominal load.
  • the valve which is controlled as a function of the displacement path of the center punch, that is the punch with the larger diameter, interrupts the pressure medium supply when setting before reaching the greatest setting stroke of this center stamp, this valve blocking the pressure medium supply when switched on in the line to the setting chamber and when switching on in the line outgoing from the predatory room prevents further flow of pressure medium from the predatory room.
  • the setting stroke of an upper punch is released, for which purpose either a valve switched on in the line to the setting room of the upper punch or a valve switched on in the line to the predatory room of the upper punch opens.
  • the setting stroke of the upper punch Due to the pressure-medium-controlled valve switched on in a line to a working space of an upper punch, the setting stroke of the upper punch / as soon as hanging contact has occurred and thus the pressure in the pump line increases, the setting stroke of the upper punch can be ended and the middle punch, that is the punch with the larger diameter and thus the larger cross-sectional area can be used for the final bracing or setting.
  • this is controlled by the displacement of the central stamp Valve opened, whereby if this valve is switched on in the setting line of the center punch, this line is now released or if this valve is switched on in the robbery line of the center punch, displacement of pressure medium from the predatory area becomes possible and thus the setting of the punch over the Middle stamp is made.
  • the design is such that the work space of the central punch, which is connected to the valve controlled as a function of the displacement path, is the same as the predatory space.
  • the valve releasing the setting stroke of the upper punch is preferably switched on for the same reasons in the line to the predatory chamber of the upper punch and the robbery line and is preferably formed directly by the pressure-controlled valve, which is acted upon by the pressure in the setting line to control it.
  • the configuration is preferably such that the pressure-medium-controlled valve is designed as a spring-loaded check valve, which opens to the predatory space of the upper stamp, can be opened by the path-dependent valve assigned to the central stamp, and can be closed under the effect of the pressure of the pressure medium.
  • the pressure-medium-controlled valve is designed as a spring-loaded check valve, which opens to the predatory space of the upper stamp, can be opened by the path-dependent valve assigned to the central stamp, and can be closed under the effect of the pressure of the pressure medium.
  • the above-mentioned check valve can now be closed again and is kept securely closed by the pressure occurring in the pirate line of the upper stamp when the center punch is set, since this check valve opens to the predatory chamber of the upper punch.
  • the valve bodies of the pressure-medium-controlled valve and the path-dependent valve are connected to one another in a force-fitting manner, the closing of one of the two valves opening the respective other valve. This simple construction ensures fully automatic control of the application of the set pressure in the desired manner.
  • a non-return valve opening to the same is opened in the pressure medium line leading to the setting chamber of the upper stamp, the opening of which is additionally controllable by the pressure in the line leading to the predatory space of the upper stamp.
  • this check valve By means of this check valve, the pressure introduced into the setting chamber of the upper punch is held securely, whereby this check valve for robbing the punch can be controlled by the pressure in the line leading to the predatory area of the upper punch, in order to allow the pressure medium to flow out of the setting chamber of the upper punch when robbing.
  • the robbery line is pressurized and a spring-loaded check valve is preferably connected to the robbery chamber of the central plunger and arranged parallel to the path-dependent controlled valve and opening to this robbery chamber.
  • This check valve thus only opens when the robber line is subjected to a pressure exceeding the pressure in the set line and / or the set line has been depressurized.
  • the robbery line ver with the predatory of the upper stamp more tied.
  • pressure-controlled valve and with the path-dependent valve opening to the predatory chamber of the center punch is connected via a check valve opening to the predatory line. In this way, the sinking movement of the stamps during the robbery can be controlled in a suitable manner.
  • the design is such that the valve body of the travel-dependent valve is connected to a spring-loaded tappet, in particular roller tappet, which interacts with stops within the displacement path of the center punch.
  • the stops can be formed by a sleeve fixed on the outer circumference of the central stamp, the length of which is dimensioned such that a corresponding travel reserve is still available for the final setting with the central stamp.
  • overpressure valves which open to the robbery line, are connected to the lines from the predatory rooms of the upper and middle ram to the path-dependent or pressure-dependent valve. These valves are then in the bypass to the remaining valves of the valve arrangement, so that destruction of these valves in the event of a malfunction is avoided with certainty.
  • These overpressure valves can be followed by the check valve that opens to the robbery line and that opens with certainty if the spring breaks.
  • FIG. 1 to 5 show a valve arrangement according to the invention in various operating states, with FIG. 1 the beginning of the setting and the extension of the central stamp, FIG. 2 the extension of the upper stamp, FIG. 3 the setting of the central stamp with great force, 4 the beginning of the robbery and FIG. 5 the further course of the robbery explained.
  • a telescopically extendable punch 1 is illustrated, wherein 2 is the fixed lower punch, 3 the sem into diesel I stationary lower punch out center punch 4 and a guided in the central mandrel 3 punch.
  • Both the central stamp 3 and the upper stamp 4 have two working spaces, the setting space of the central stamp 3 being designated 5 and the predatory space 6 thereof.
  • the setting space of the upper punch 4 is designated by 7 and the predatory area of the same by 8.
  • the setting line 9 is connected to the setting space of the center punch. This set line is connected to the set space 7 of the upper punch 4 via a branch line 10.
  • the robbery chamber 6 of the central stamp is connected to a robbery line 11.
  • the predatory space 8 of the upper punch 4 is connected to a predatory line 12.
  • These two robbery lines 11 and 12 open into the common robbery pipe 14 with the interposition of the valve arrangement 13.
  • the valve arrangement 13 contains a path-dependent controlled valve 15 which is switched into the robbery pipe 11 and opens to the robbery chamber 6 of the central stamp 3.
  • the valve body 16 of this valve is connected to a roller tappet 18 with the interposition of a spring 17.
  • the roller 19 of this roller plunger interacts with the outer surface of the central stamp. 1, the valve body 16 is held in the open position by a spring 20. If pressure is now applied to the setting chamber 5 via the setting line 9, the central punch 3 extends in the direction of the arrow 21 and the pressure medium from the predatory space 6 flows via the predatory line 11 to the path-dependent g e-controlled valve 15 via the opened valve body 16 a line 22 to a check valve 23 opening to the robbery line 14, the pressure medium displaced from the robbery chamber 6 overpressing the spring 24 of the check valve 23. In the bypass to the path-dependent valve 15 there is also a pressure relief valve 25 connected to the robbery line 11, which remains closed during normal operation.
  • valve 27 is designed as a check valve which is acted upon by a spring 28 and opens towards the predatory space 8 of the upper punch and is therefore kept closed by the pressure in the predatory line 12.
  • a pressure relief valve 29 which remains closed in the normal operating state.
  • the pressure medium can in turn flow out of the robbery line 12 via the lines 26, 22 and the check valve 23 into the robbery line 14.
  • the setting stroke of the center punch 3 in the direction of arrow 21 now takes place until the roller 19 of the roller tappet 18 collides with the sleeve 30 and this is shown in FIG. 2.
  • the valve body 16 of the travel-dependent controlled valve 15 is closed and pressure medium can thus no longer escape from the predatory space 6 'of the central plunger 3.
  • the pressure relief valve 25 could only be overpressed in the event of a malfunction, but this will not occur in normal operation.
  • the check valve 31, which is switched on to the robbery line 11 and still in the bypass to this path-dependent valve 15 and opens to the robbery chamber 6, is in any case determined by the pressure in the robbery line 11 kept closed, so that a further extension of the central punch 3 in the direction of arrow 21 is prevented.
  • the valve body 32 of the valve 27 is lifted from its seat, since the valve bodies 16 and 32 are non-positively connected to one another.
  • the robbery line 12 of the upper ram 4 is now opened and the pressure medium which is pressed into the setting chamber 7 of the upper ram 4 via the setting pipe 10 and the check valve 33 opening to the seating chamber 7 of the upper ram 4 now displaces the pressure medium from the robbery chamber 8 of the upper plunger, this pressure medium entering the robbery line 14 via the robbery line 12, the valve 27, the line 22 and the check valve 23 opening to the robbery line 14.
  • a pressure relief valve 34 is also provided to protect the upper punch.
  • a piston 35 is now displaceably guided in valve 27, one surface of which is acted upon by the pressure in a pressure medium line 3 E.
  • the pressure medium line 36 can be connected in a simple manner, for example via a slide, not shown, to the set line 9 or 10.
  • the corresponding connection is indicated schematically at 37.
  • a pressure that overcompensates for the weight of the upper punch which is generally around 20 to 30 bar, is required.
  • the pressure of the set line 10 and thus in the set line 9 can rise to the pump pressure, which is generally between 200 and 330 bar.
  • the pressure in the line 36 will also increase and the piston 35 in the valve 27 will be moved to the left while overcoming the force of the spring 28 and will strike the valve body 32.
  • the corresponding cooperative. Attacks are designated 38 and 39.
  • valve body 32 of the valve 27 is again pressed into the closed position, the valve body 16 again coming from the valve body 32 into the open position while overcoming the force of the spring 17, as is shown in FIG. 3.
  • the pump pressure which has meanwhile risen significantly, is now fed via the setting line 9 to the setting chamber 5 of the central stamp 3, pressure medium escaping from the predatory space 6 of the central stamp 3 via the predatory line 11 of the central stamp and the now open valve 15 via the line 22 and the valve 23 in the common robbery line 14 can escape.
  • the setting is thus carried out under high pressure over the larger cross-sectional area of the central punch 3 having the larger diameter, so that the pump pressure can be better used without exceeding the permissible nominal load of the punch.
  • FIGS. 4 and 5 The stealing of the stamp using the valve arrangement 13 is now shown in FIGS. 4 and 5.
  • the pressure is reduced in the setting lines 9 and 10 and 14 pressure medium is pressed in via the robbery line.
  • This pressure medium now holds the check valve 23 opening towards the robbery line 14 closed, but can open the check valve 31 opening towards the robbery chamber 6 of the central stamp 3, so that the pressure medium is connected via a line 40 to the robbery line 11 of the central stamp, whereby the central stamp 3 in the direction of arrow 41 sinks.
  • valve 27 is opened by the force of spring 17 of travel-dependent valve 15, which in turn is closed, and closed valve body 16 presses valve body 32 of the pressure-dependent valve 27 in the open position.
  • the upper stamp 4 drops in this first phase of Do not rob, since the setting space 7 of this upper punch is kept closed by the check valve 33, which opens to this setting space 7.
  • the robbery line 12 to the robbery chamber 8 of the upper ram is largely depressurized in this phase and is connected via the open valve 27 and the line 22 to the valve 23 which is kept closed by the pressure in the robbery line 14.
  • the valve body 16 of the travel-dependent valve 15 lifts off its seat and the pressure medium of the robbery line 14 is now not only available via the robbery line 11 with the robbery chamber 6 of the central stamp 3 in connection, but can enter the robbery line 12 of the upper punch via the check valve 27 opening to the robbery chamber 8 of the upper punch, the valve body 32 of which lifts off from the valve body 16 of the travel-dependent valve 15. This is shown in FIG. 5.
  • Sinking in of the upper plunger 4 is now made possible in that the pressure in the robbery line 12 lifts the valve body 43 of the check valve 33 switched into the set line 10 via a device 42. Pressure medium can now be supplied to the predatory space 8 of the upper punch 4 via the robbery line 12, wherein pressure medium can flow out of the setting space 7 of this upper punch via the check valve 33 kept open into the setting line 10. It also retracts the upper stamp, the upper stamp retracting faster than the central stamp 3 due to the smaller volume to be displaced.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Catching Or Destruction (AREA)
  • Fluid-Pressure Circuits (AREA)
EP80890013A 1979-03-14 1980-02-04 Ventilanordnung für die Steuerung des Hubes eines teleskopisch ausfahrbaren Stempels Withdrawn EP0016747A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT191979A AT360466B (de) 1979-03-14 1979-03-14 Ventilanordnung fuer die steuerung des hubes eines teleskopisch ausfahrbaren stempels
AT1919/79 1979-03-14

Publications (1)

Publication Number Publication Date
EP0016747A1 true EP0016747A1 (de) 1980-10-01

Family

ID=3523857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80890013A Withdrawn EP0016747A1 (de) 1979-03-14 1980-02-04 Ventilanordnung für die Steuerung des Hubes eines teleskopisch ausfahrbaren Stempels

Country Status (8)

Country Link
US (1) US4344354A (xx)
EP (1) EP0016747A1 (xx)
JP (1) JPS55126696A (xx)
AT (1) AT360466B (xx)
AU (1) AU5527280A (xx)
PL (1) PL222021A1 (xx)
YU (1) YU68580A (xx)
ZA (1) ZA801208B (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0967399A3 (de) * 1998-06-25 2000-04-26 Bison stematec, Maschinenbau- und Hubarbeitsbühnen Produktionsgesellschaft mbH Mehrstufiger, doppelt wirkender Hydraulikzylinder mit Hydraulikanordnung insbesondere für Hubarbeitssysteme

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4748893A (en) * 1986-09-08 1988-06-07 Foster Raymond K Drive/frame assembly for a reciprocating floor
US4748894A (en) * 1986-09-08 1988-06-07 Foster Raymond K Drive/frame assembly for a reciprocating floor
US5878994A (en) * 1995-12-01 1999-03-09 Phillips Petroleum Company Gate valve
US6368046B1 (en) * 1999-03-19 2002-04-09 Caterpillar Inc. Modulation of ejector pumps to provide uniform and controllable ejector speed during ejector stroke for articulated trucks and the like having ejector type dump mechanism
US20130101703A9 (en) * 2005-03-03 2013-04-25 Green Rabbit, Llc Non-dairy, non-soy whippable food product and method of making
CN101205809B (zh) * 2007-12-13 2010-06-23 中煤北京煤矿机械有限责任公司 双伸缩立柱全能升柱系统及矿用液压支架
US10214071B1 (en) * 2016-05-28 2019-02-26 PAL Suspension LLC Vehicle suspension system with multi-stage hydraulic cylinder assemblies and external spring packs
CN109944616B (zh) * 2019-04-29 2020-07-24 柳州市锐科机械有限公司 一种具有阀嘴防尘功能的支撑效果好的单体液压支柱
US10737545B1 (en) 2019-12-19 2020-08-11 PAL Suspension LLC Vehicle suspension system with multi-stage hydraulic cylinder assemblies and external spring packs

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE632029A (xx) * 1962-05-12
BE560406A (fr) * 1956-08-31 1960-04-22 Becorit Grubenausbau Gmbh Perfectionnements apportes aux etancons hydrauliques de mines.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1963286A (en) * 1927-11-01 1934-06-19 Ballert Otto Hydraulic tilting device, especially for tilting the bodies of motor vehicles
US2716965A (en) * 1951-12-03 1955-09-06 Mechanical Handling Sys Inc Fluid pressure actuated device having a number of predetermined positions
US3188917A (en) * 1962-08-10 1965-06-15 Yale & Towne Inc Telescoping lift ram
US3832937A (en) * 1972-12-29 1974-09-03 Up Right Inc Pneumatic telescopic hoist having three or more steps of extension
US4191092A (en) * 1977-11-16 1980-03-04 Cascade Corporation Telescopic ram

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE560406A (fr) * 1956-08-31 1960-04-22 Becorit Grubenausbau Gmbh Perfectionnements apportes aux etancons hydrauliques de mines.
BE632029A (xx) * 1962-05-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0967399A3 (de) * 1998-06-25 2000-04-26 Bison stematec, Maschinenbau- und Hubarbeitsbühnen Produktionsgesellschaft mbH Mehrstufiger, doppelt wirkender Hydraulikzylinder mit Hydraulikanordnung insbesondere für Hubarbeitssysteme

Also Published As

Publication number Publication date
AU5527280A (en) 1980-09-18
ATA191979A (de) 1980-06-15
JPS55126696A (en) 1980-09-30
ZA801208B (en) 1981-03-25
YU68580A (en) 1983-06-30
AT360466B (de) 1981-01-12
US4344354A (en) 1982-08-17
PL222021A1 (xx) 1980-11-03

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19801025

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Effective date: 19820309

RIN1 Information on inventor provided before grant (corrected)

Inventor name: NEUPER, REINHARD, DIPL.-ING.

Inventor name: SIEBENHOFER, GOTTFRIED

Inventor name: SUESSENBECK, HEINRICH

Inventor name: ZITZ, ALFRED