EP0519185B2 - Vérin commandé par un fluide sous pression - Google Patents

Vérin commandé par un fluide sous pression Download PDF

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Publication number
EP0519185B2
EP0519185B2 EP92107083A EP92107083A EP0519185B2 EP 0519185 B2 EP0519185 B2 EP 0519185B2 EP 92107083 A EP92107083 A EP 92107083A EP 92107083 A EP92107083 A EP 92107083A EP 0519185 B2 EP0519185 B2 EP 0519185B2
Authority
EP
European Patent Office
Prior art keywords
longitudinal
cylinder
flange plate
working cylinder
cylinder liner
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
EP92107083A
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German (de)
English (en)
Other versions
EP0519185B1 (fr
EP0519185A1 (fr
Inventor
Philippe Ducrettet
Christian . Tour
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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
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Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0519185A1 publication Critical patent/EP0519185A1/fr
Publication of EP0519185B1 publication Critical patent/EP0519185B1/fr
Application granted granted Critical
Publication of EP0519185B2 publication Critical patent/EP0519185B2/fr
Anticipated expiration legal-status Critical
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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
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1428—Cylinders

Definitions

  • the invention is based on a pressure medium actuable Working cylinder according to the in the upper of claim 1 specified genus.
  • the working cylinder therefore requires a relatively large number of components and also results in a large number of sealing points, in particular the transition points from the tie rods loaded with high forces into the Cylinder covers are critical.
  • the working cylinder builds therefore relatively expensive, with the risk of leakage is relatively large.
  • a pressure fluid operated Working cylinder known in which the cylinder tube installed between two cylinder covers designed as a profile tube with external channels is that with the help of additional components for different functions, such as pressure medium Circulation channels or fastening channels can be used are.
  • a disadvantage of this cylinder is that the outer channels run across their entire Length must have a longitudinal slot, so that profiled components depending on the corresponding Function can be installed. This leads to one high construction costs and a risk of Leakage. It is also unfavorable that when using a outer channel as a pressure medium channel Sealing or pressure medium connection via the front cylinder cover must be made which also means the number of fluid-carrying Components is increased. Otherwise, there will be none Notes on installing a flange plate with directional valve given.
  • Cylinder sleeve has a transition opening from the channel into the Pressure chamber of the cylinder.
  • flange plate for mounting a Valve is not taught here.
  • the fluid pressure actuatable according to the invention has the advantage that he arranged a compact unit with integrated Pressure medium channels allowed, the danger leak pressure medium is particularly reduced.
  • the working cylinder comes with fewer components off, especially those with pressurization.
  • the working cylinder is easy to handle and versatile. It can be space-saving and thus produce inexpensively.
  • FIG. 1 An embodiment of the invention is in the Drawing shown and in the description below 1 shows a Perspective view of the pressure medium actuated Working cylinder in a simplified way
  • Figure 2 is a front view of the cylinder Figure 1 partially in longitudinal section
  • Figure 3 is a plan view of the working cylinder of Figure 2
  • Figure 4 a Side view according to A in Figure 2.
  • FIG. 1 shows a perspective, schematic Representation of a pressure-actuated working cylinder 10, for its explanation also on the Figures 2 to 4 is referred to.
  • the working cylinder 10 has a housing in the essentially tubular cylinder liner 11, on the outside of which a flange plate 12 is attached, which in turn is a flanged directional valve 13 wears.
  • the cylinder liner 11 has one through guide bore 14 in which a piston 15 is guided axially longitudinally.
  • a piston 15 is guided axially longitudinally.
  • the piston rod 16 is attached to a piston rod 16, which in a first, front cylinder cover 17 tight and is slidably guided and through the latter protrudes outside.
  • the first cylinder cover 17 is on the piston rod side in the guide bore 14 of the cylinder liner 11 used and axially fastened there and together with the piston 15 delimits a first front pressure chamber 18.
  • Cylinder cover 19 firmly and tightly installed and limited with the piston 15 a second pressure chamber 21.
  • the tubular cylinder liner particularly clearly 11 on its outer surface parallel to Four longitudinal struts 22 to 25 running along the longitudinal axis on, of which the two longitudinal struts 22, 23 as Guide elements for the flange plate 12 used will.
  • the longitudinal struts 22 to 25 are on the Outer circumference of the cylinder liner 11 evenly distributed so that they are in cross section the cylinder liner 11 seen on the corners of a Squares.
  • the longitudinal struts 22 to 25 are each in one piece in the manner of profile rails on the Molded outer surface of the cylinder liner 11, so that the cylinder liner 11 easily from a profile tube can be produced.
  • the outer surface of the cylinder liner 11 is essentially seen in cross section formed as an octagon, in which the vertical and horizontally lying four longitudinal surfaces 26 continuously and just go through while at the four sloping longitudinal surfaces 27 each in the middle the longitudinal struts 22 to 25 are integrally formed. Any of these Longitudinal struts 22 to 25 form an outward approximately semicircular guide surface 28, each over two roughly parallel to each other Guide surfaces 29, 31 in the oblique longitudinal surface 27 passes.
  • the two have axial end regions of each longitudinal bore 32 introduced into the face in the axial direction running blind holes 33, 34 on.
  • Longitudinal struts 22, 23 are in the threaded holes 33 and 34 respectively from the relevant end faces forth sealing plug 35 screwed in, so that the longitudinal bore 32 a first in the first longitudinal strut 22 Pressure medium channel 36 forms.
  • This first pressure medium channel 36 stands over an arranged in the cylinder liner 11 first oblique bore 37 with the second Pressure chamber 21 in connection.
  • the flange plate 12 on its underside two mounting grooves 41, 42 open on one side, the Shape of the outer contour of the longitudinal struts 21, 22 is precisely adjusted so that the flange plate 12 is flawless and axially displaceable on the longitudinal struts 21, 22 is guided.
  • the flange plate 12 will from one end of the cylinder liner 11 to the Longitudinal struts 22, 23 pushed on and in a predetermined Position with locking screws 43 locked.
  • the flange plate has in the locked position 12 such a position that the first pressure medium channel 36 in the longitudinal strut 22 via a first transition opening 44 (FIG. 2) and in the flange plate 12 extending transverse channels 45 with a first motor connection 46 in a flange 47 connection Has.
  • One in the flange surface 47 between the two Motor connections 46, 48 lying pump pressure connection 52 is connected to an inlet connection 53, which in a rear end face 54 the flange plate 12 is formed.
  • the two transfer openings 44, 51 between the flange plate 12 and the two Longitudinal struts 22, 23 are on the cylinder liner 11 sealed by suitable seals, so that on Transition of the pressure medium channels from the flange plate 12 in the cylinder liner 11 no pressure medium can lick outside.
  • FIG. 1 is in a simplified form with arrows the course of the pressure medium flow is given as he with a correspondingly switched directional valve 13 and 16 when the piston rod extends.
  • a serving to actuate the working cylinder 10 pressurized fluid is at the inlet connection 53 inserted into the flange plate 12 where it reaches the inlet connection 52 in the flange surface 47.
  • the pressure medium now flows in the directional control valve 13 itself from the pump pressure port 52 to the first Motor connection 46 in the flange surface 47, whereupon it through the flange plate 12 through the transverse channels 45 and the first transition opening 44 in the first Pressure medium channel 36 in the first longitudinal strut 22 flows.
  • the 5/2-way valve 13 switches.
  • the directional control valve 13 controls Pressure medium from the pump pressure connection 52 to second motor connection 48 and thus in the first, front pressure chamber 18, followed by that on the front pressure-loaded piston 15, the piston rod 16 drives in.
  • pressure medium becomes the second Pressure chamber 21 via the first motor connection 46 again controlled to the return port 56 and can escape through the exhaust caps 59.
  • the flange plate 12 is in perfect and captive manner guided on the cylinder liner 11 and can in their axial position adapted to the respective circumstances only by the two transfer openings 44 and 51 on the two longitudinal struts 22 or 23 are drilled accordingly.
  • the cylinder liner 11 can be done in a simple and inexpensive manner Manufacture way from a profile tube, the two Pressure medium channels 36 and 38 in any way in two adjacent longitudinal struts 22 up to 25 can be installed.
  • the oblique bores 37 and 39 can be manufactured in the profile tube easy to manufacture.
  • the flange plate 12 with directional valve 13 can be dismantled without the cylinder cover 17, 19 removed from the cylinder liner 11 Need to become.
  • the working cylinder 10 is therefore versatile and can be manufactured inexpensively.
  • the longitudinal struts 22 to 25 as integrated Components of the cylinder liner 11 take over Variety of functions; they are not just for guidance and mounting the flange plate 12, but also form pressure medium-carrying channels Control of the working cylinder 10. Furthermore, let them if necessary also for the function of tie rods Use if parts of the cylinder covers shown other types of covers can be used. Of course, are shown on the embodiment Changes possible without thinking to deviate from the invention.
  • the working cylinder is not for use as a pneumatic cylinder limited, but can also with hydraulic Pressure medium are operated.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Claims (11)

  1. Vérin (10) commandé par un fluide sous pression, dans lequel :
    a) un cylindre (11), contenant un piston (15) coulissant axialement, est fermé à ses deux extrémités par des couvercles (17, 19), dont l'un au moins est traversé par la tige (16) du piston,
    b) plusieurs éléments de guidage (22) à (25) sont répartis régulièrement à sa périphérie, le long du cylindre, à l'extérieur et parallèlement à son axe longitudinal, deux d'entre eux (22, 23) voisins, servant de support à un plateau de bridage (12) pouvant coulisser en direction longitudinale et recevoir un distributeur servant à commander le vérin,
    c) les deux éléments de guidage supportant le plateau de bridage sont creux et percés d'ouverture de passage (37, 39, 44, 51) au niveau du plateau de bridage et des couvercles du vérin, de sorte que le fluide sous pression peut être envoyé, par la soupape de commande dans l'une ou l'autre des deux chambres de pression (18, 21), de part et d'autre du piston,
    caractérisé en ce que
    d) les éléments de guidage s'étendant le long du cylindre (11), parallèlement à l'axe longitudinal, font partie du cylindre et sont constitués par des nervures longitudinales (22) à (25),
    e) parmi les nervures longitudinales (22-25), faisant corps avec la douille (11), les deux nervures longitudinales (22, 23), adjacentes, présentant des surfaces externes de guidage (28, 29, 31) maintenant de manière imperdable le plateau de bridage glissé dessus,
    f) les ouvertures de passage (39, 37) reliant les deux nervures (22, 23) aux deux chambre de pression (18, 21) se situant dans le cylindre (11) du vérin.
  2. Vérin selon la revendication 1,
    caractérisé en ce que
    le cylindre (11) est une pièce extrudée en forme de tube profilé qui porte à l'extérieur quatre nervures longitudinales (22, 23, 24, 25) qui vues en coupe transversale, sont situées aux coins d'un rectangle, de préférence aux coins d'un carré, et présentent chacune un alésage longitudinal interne continu (32).
  3. Vérin selon la revendication 2,
    caractérisé en ce que
    les alésages (32) situés à l'intérieur des nervures (22 à 25) présentent à partir des faces frontales du cylindre (11), des extrémités munies d'alésages filetés (33, 34).
  4. Vérin selon une des revendications 1 à 3,
    caractérisé en ce que
    les rainures de maintien (41, 42) associées aux nervures (22, 23) sont ouvertes sur un côté du plateau de bridage (12) et sont conçues pour que le plateau (12) est maintenu, radialement imperdable sur le cylindre (11).
  5. Vérin selon une des revendications 1 à 4,
    caractérisé en ce que
    les raccords d'amenée (53) et de retour (58) du fluide sous pression sont prévus sur le plateau de bridage (12).
  6. Vérin selon une des revendications 2 à 5,
    caractérisé en ce que
    le cylindre de vérin (11) a une forme extérieure qui dessine, en coupe transversale, un octogone sensiblement régulier, les nervures longitudinales (22 à 25) se plaçant chacune au milieu de quatre faces longitudinales (27) opposées deux par deux.
  7. Vérin selon une ou plusieurs des revendications précédentes,
    caractérisé en ce qu'
    un dispositif de sécurité (43) empêchant le coulissement axial le long des nervures (22, 23) est monté sur le plateau de bridage (12).
  8. Vérin selon une des revendications 1 à 7,
    caractérisé en ce que
    le couvercle de vérin (17, 19) est bloqué axialement dans le cylindre de vérin (11).
  9. Vérin selon une des revendications 1 à 8,
    caractérisé en ce que
    la nervure longitudinale (22 à 25) du profilé tubulaire présente une surface de guidage (28), sensiblement semi-circulaire en coupe transversale, prolongée par deux surfaces de guidage sensiblement parallèles (29, 31), aboutissant à une face longitudinale (27) du cylindre de vérin (11).
  10. Vérin selon la revendication 8,
    caractérisé en ce que
    les deux couvercles de vérin (17, 19) sont montés dans un alésage (14) de guidage contenant le piston (15).
  11. Vérin selon la revendication 8 ou 10,
    caractérisé en ce que
    le diamètre extérieur maximal du couvercle (17, 19) correspond au diamètre de l'alésage de guidage (14).
EP92107083A 1991-06-19 1992-04-25 Vérin commandé par un fluide sous pression Expired - Lifetime EP0519185B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4120170A DE4120170A1 (de) 1991-06-19 1991-06-19 Druckmittelbetaetigbarer arbeitszylinder
DE4120170 1991-06-19

Publications (3)

Publication Number Publication Date
EP0519185A1 EP0519185A1 (fr) 1992-12-23
EP0519185B1 EP0519185B1 (fr) 1994-10-19
EP0519185B2 true EP0519185B2 (fr) 1999-08-11

Family

ID=6434253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92107083A Expired - Lifetime EP0519185B2 (fr) 1991-06-19 1992-04-25 Vérin commandé par un fluide sous pression

Country Status (2)

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EP (1) EP0519185B2 (fr)
DE (2) DE4120170A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2710372B1 (fr) * 1993-09-22 1995-11-17 Alain Bourgeois Dispositif de commande hydraulique d'un vérin à double effet.
JP3131570B2 (ja) 1996-10-14 2001-02-05 エスエムシー株式会社 ロータリーアクチュエータ
DE10043647B4 (de) * 2000-09-05 2004-02-05 Robert Bosch Gmbh Druckmittelbetätigbare Stelleinheit
DE10112637A1 (de) * 2001-03-14 2002-09-19 Continental Teves Ag & Co Ohg Aus einem Strang abgeschnittenes Rohteil f. einen Hauptzylinder sowie hieraus gefertigter Hauptzylinder
US11009048B1 (en) 2020-09-09 2021-05-18 Robert Bosch Gmbh Boom lift system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060901A (en) * 1960-05-31 1962-10-30 Ling Temco Vought Inc Hydraulic actuator with integrally housed valve
US3571883A (en) * 1968-04-19 1971-03-23 Westinghouse Air Brake Co Method of making a fluid operated cylinder device
DE3246970A1 (de) * 1982-12-18 1984-06-20 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen Druckmittelbetaetigbarer arbeitszylinder
DE8315785U1 (de) * 1983-05-28 1986-06-26 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen Druckmittelbetätigte Kolben-Zylinder-Einheit mit Magnetschuh als Verdrehsicherung
DE3436946C2 (de) * 1984-10-09 1994-06-09 Mannesmann Ag Linearantrieb
FR2573490B1 (fr) * 1984-11-19 1988-08-26 Telemecanique Electrique Verin ayant un canal de transfert integre dans le cylindre
AT386656B (de) * 1986-04-01 1988-09-26 Hoerbiger Pneumatic Gmbh Druckmittelbetaetigbarer arbeitszylinder
ATE96513T1 (de) * 1989-03-03 1993-11-15 Festo Kg Zylinder fuer ein kolben-zylinder-aggregat.

Also Published As

Publication number Publication date
EP0519185B1 (fr) 1994-10-19
EP0519185A1 (fr) 1992-12-23
DE4120170A1 (de) 1992-12-24
DE59200647D1 (de) 1994-11-24

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