EP1531274A2 - Cylindre d'actionnement , de préférence pour systèmes pneumatiques de freinage - Google Patents

Cylindre d'actionnement , de préférence pour systèmes pneumatiques de freinage Download PDF

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Publication number
EP1531274A2
EP1531274A2 EP04026129A EP04026129A EP1531274A2 EP 1531274 A2 EP1531274 A2 EP 1531274A2 EP 04026129 A EP04026129 A EP 04026129A EP 04026129 A EP04026129 A EP 04026129A EP 1531274 A2 EP1531274 A2 EP 1531274A2
Authority
EP
European Patent Office
Prior art keywords
actuating cylinder
pressure chamber
screw
pressure
cylinder according
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.)
Granted
Application number
EP04026129A
Other languages
German (de)
English (en)
Other versions
EP1531274A3 (fr
EP1531274B1 (fr
Inventor
Ulrich Köchl
Ahmet Akin
Serkan Bilsen
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.)
BPW Bergische Achsen KG
Original Assignee
BPW Bergische Achsen KG
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 BPW Bergische Achsen KG filed Critical BPW Bergische Achsen KG
Publication of EP1531274A2 publication Critical patent/EP1531274A2/fr
Publication of EP1531274A3 publication Critical patent/EP1531274A3/fr
Application granted granted Critical
Publication of EP1531274B1 publication Critical patent/EP1531274B1/fr
Anticipated expiration legal-status Critical
Active 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
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type

Definitions

  • Such actuating cylinders are often for the operation of compressed air brakes used, they are therefore often referred to as a brake cylinder.
  • Be used usually diaphragm or piston cylinder.
  • the Actuating cylinder especially if this for brake systems of trailer vehicles be used in case of greater pressure loss of the compressed air supply in the Go to operating or braking state.
  • the Actuating cylinder is located in one Subspace of the actuating cylinder a strong spring, which in case too low Compressed air supply extends the actuating rod and thus actuates the vehicle brake, so that the vehicle can not be moved.
  • the invention has for its object to provide an actuating cylinder, which is characterized by improved spatial installation conditions and with respect to the spatial conditions easier assembly and disassembly of the elements of the release device.
  • the associated with the placement of the elements of the release device additional costs in the production of the cylinder should be low.
  • the connecting section of the screw element is provided with a radial extension over only part of its circumference, and that the edge of the opening of the end wall of the screw element is at least over a subsector of its entire circumference close to the threaded portion zoom, and on the inside of the sub-sector, a support surface is formed at the radial extension of the screw when not in use can support.
  • the connecting portion of the Screw element is provided with two radial extensions, with respect to the Longitudinal axis of the screw opposite each other by 180 °.
  • this case extend at the edge of the opening a total of two subsectors to close to the Thread section zoom, wherein the sub-sectors face each other by 180 °, and between the subsectors one each over the edge of the subsectors recessed recess is the size and radial extent of the passage allows the radial extensions of the screw.
  • the screw optionally also completely from the Remove cylinder housing, if this z. B. should be replaced.
  • the inside of the sub-sector on both sides of the support surface with projecting to the movable wall surveys is provided. These surveys cause a certain positive connection of his Radial extensions of the inside of the support surface adjacent screw. In its storage position, this can not turn independently and thus from the Actuator fall out.
  • the surveys are preferably deformations produced by stamping in the material of the end wall.
  • a further embodiment of the invention is characterized by a on the Threaded portion of the screw patch and on the outside of the threaded nut supporting protective sleeve, preferably made of plastic.
  • Another embodiment is characterized by a near the end of the Threaded portion arranged transverse bore for receiving a hin tellsteckbaren Sich ceremoniesssplintes, wherein the one end against the outside of the threaded nut Protective sleeve extends with its other end to near the transverse bore. In this way secures the protective sleeve, the nut against loosening, causing the Dissolving device not z. B. as a result of shock associated with a loosening of Threaded nut can be lost.
  • the Fign. 1, 2 and 3 show one and the same actuating cylinder, but in different Operating or assembly orders.
  • the actuating cylinder is used as a brake cylinder for actuating a Air brake, be it a disc brake or a drum brake.
  • the power to Actuation of the brake is transmitted via the actuating rod 1 to the brake.
  • to Symbolizing the relevant pressure force is provided with the arrow 2.
  • the actuating rod 1 is what the Fig. 2 best seen, centered with her Pressure plate 4 to a flexible, pressure-tight membrane 3 at.
  • the outer edge of the membrane 3 is at 5 in the rotationally symmetrical shaped cylinder housing 6 of Clamped actuating cylinder.
  • This cylinder housing 6 is described in the Embodiment composed of a total of three housing parts, which on the Drawing with A, B and C are designated.
  • the clamping 5 of the membrane 3 takes place accordingly pressure-resistant between the housing parts B and C of the cylinder housing.
  • FIG. 1 shows the Diaphragm 3 including the pressure plate 4 in the lowest position
  • FIG. 2 shows the same parts in the uppermost position in which the Operating rod 1 is extended with maximum travel.
  • the first pressure chamber 8 is connected via a connection with a respect to their strength adjustable compressed air source 8a in conjunction, Fig. 2.
  • the common partition 7 is a second Pressure chamber 9, which is connected to a second compressed air source 9 a, wherein the Compressed air source 9a maintains a constant pressure in the second pressure chamber 9.
  • the second pressure chamber 9 is again on the one hand by an axial housing direction movable diaphragm 12, and on the other hand limited by the rigid partition 7.
  • the Membrane 12 is clamped fixed to the housing along its edge, between the Housing parts A and B.
  • the membrane 12 has a rigid pressure plate 13, which rests in the middle region of the membrane 12 at this.
  • a spring 14 with strong Spring force is supported on the one hand with respect to the rigid end wall 15 of the outer Housing part A from, and is supported with its other, free end against the pressure plate thirteenth and thus also against the membrane 12.
  • the spring 14 exerts a considerable Compressive force from which endeavors, the membrane 12 in Fig. 1 upwards and thus in the sense a reduction of the second pressure chamber 9 to move.
  • the actuating cylinder has two more, but very much much smaller dimensioned springs 16, 17 on.
  • the spring 16 is supported on the one hand on the other end wall 18 of the cylinder housing, and on the other hand against the pressure plate 4th the membrane 3 from.
  • the spring 17 is supported on the two pressure chambers 8, 9 airtight separating partition 7 and on the other hand from below against the plate 22 of a Pressure transfer ram 23 from.
  • the pressure transfer ram 23 is sealed by the Passed central partition 7, and also ends at its other end in one Plate 24. With the plate 24, the pressure transfer ram 23 on the diaphragm 3 of the first pressure chamber 8 abut. Accordingly, the pressure transfer ram 23 extends with its two plates 22, 24 partly in the first pressure chamber 8, and partly in the second pressure chamber 9.
  • the first pressure chamber 8 there is the adjustable operating pressure. If this is low, take the membrane 3 their shown in Fig. 1 position, the first pressure chamber 8 has accordingly its smallest volume. If, on the other hand, the control pressure at the compressed air source 8a is increased, the membrane 3 increasingly moves upwards in the direction of the end wall 18.
  • the pressure plate 13, on which the compression spring 14 is supported with its free end, is in her Central area provided with a kind of pin 47.
  • This is a first chamber 27, to the outside of a second, with respect to the first chamber rotated by 90 ° designed chamber 28 connects.
  • a release device is a screw 30, which has at its inwardly directed end a connecting portion 31 to which a short cylindrical section 32 connects, to which in turn a long Threaded portion 33 connects.
  • Screw 30 further includes a threaded nut 35, which is preferably under Interposed layer of a washer 36, supported from the outside against the end wall 15. The threaded nut 35 is guided on the out of the cylinder housing 6 Threaded portion 33 of the screw 30 can be screwed.
  • the connecting portion 31 has the shape of a hammer. Beyond the diameter of the threaded portion 33 protruding is the Connecting portion 31 therefore a hammer head with a first radial extension 31 a and a second radial extension 31b.
  • the two radial extensions 31a, 31b lie with respect to the longitudinal axis 21 of the screw 30 opposite by 180 °, so that the connecting portion 31, viewed from the front side, approximately in the shape of an elongated Oval or even an elongated rectangle has.
  • the two radial extensions 31a, 31b can also z. B. only a single or three such extensions available be.
  • the provided with the molded pin 47 pressure plate 13 has due to the twisted Inner contour in the transition from the chamber 27 to the chamber 28 a trough 29, in which, as Fig. 3 shows well, the radial extensions 31a, 31b axially can support.
  • the screw 30 an axially after externally directed tensile force on the pressure plate 13 exert what tensile force at unpressurized Pressure chamber 9 at the same time leads to a compression of the compression spring 14, and further the radial Extensions 31a, 31b in the wells 29 axially and rotationally secure secures.
  • This is applied Pulling force by turning the preferably provided with a hexagon nut 35, whereby the screw 30 increasingly emerges from the cylinder housing 6.
  • Fig. 3 shows the locking position of the screw 30 in the chamber 27 of the Pressure plate 13. Is opposite this locking position, at full pressure in Pressure chamber 9, the screw 30 is pressed slightly upwards and about 90 ° to his Rotated central axis 21, the two radial extensions 31a, 31b detach from the Troughs 29.
  • the screw 30 can now be designed including its hammer-like radial expansions through the opposite to the chamber 27 twisted arranged chamber 28 are pulled out through from the pressure plate 13. This is shown in FIG. 2, but here in unpressurized state of the pressure chamber 9.
  • With its connecting section 31 now supports the screw 30 from the inside to the end wall 15 of the Cylinder housing 6 from.
  • the threaded nut 35 with the underlying Washer 36 tightened. This is the storage position for the screw
  • its threaded portion 33 protrudes far out of the cylinder housing 6, however This does not disturb in practice, since at this point usually enough space is available.
  • Fig. 2 shows that the edge of the passage of the screw 30th through the end wall 15 serving opening 38 at least over a subsector of theylon Strukturs this opening to close to the threaded portion 33 and the cylindrical section 32 extends.
  • the support surface for the hammerhead-like Connecting portion 31 is accordingly located on the inside of this sub-sector.
  • FIG. 5 The centrally disposed in the end wall 15 Opening 38 is then not round in the embodiment, but consists of a round central region and two outgoing recesses 39a, 39b together. Finally, the recesses 39a, 39b provide radial, keyhole-like extensions the central opening 38.
  • the recesses 39a, 39b are located in Viewed circumferentially, between the two subsectors 37a, 37b. Since the Recesses 39a, 39b opposed by 180 °, the same applies to the two Subsectors 37a, 37b.
  • the size of the recesses 39 a, 39 b is sized so that the Radial extensions 31a, 31b formed in the screw element 30 pass freely can.
  • Fig. 5 also shows that the inner sides of the subsectors 37a, 37b on both sides of the Support surfaces 40a, 40b is provided for the parked screw with projections 41, which project toward the interior of the cylinder housing.
  • the radial extensions 31a, 31b of the screw support the protruding projections 41 prevent by their shape design Twisting the screw, as long as the threaded nut 35 is sufficiently tightened.
  • the elevations 41 by additional embossing of the rest by Deep drawing manufactured cylinder housing produced.
  • the screw 30 in its parking or Storage position can be on the threaded portion 33, a protective sleeve 42 made Put plastic on.
  • the protective sleeve 42 is shown in dashed lines in Fig. 2. She serves in First and foremost to protect the thread from mechanical injury. Furthermore the protective sleeve 42 is a securing device for the threaded nut 35. Because the Protective sleeve 42 prevents accidental loosening of the threaded nut 35, z. B. as a result the vibrations of the vehicle while driving.
  • the protective sleeve 42 a on such length that they with their one end to the outside of the threaded nut 35, and with its other end extends to the Sich ceremoniesssplint 43, which in the transverse bore 34th is inserted into it. At least the threaded nut 35 may not solve so far that whose distance from the end wall 15 is greater than the height of the elevations 41st War then a rotation of the screw 30 and thus its loss would be possible.
  • Fig. 2 shows that the strong-sized spring 14 with its fixed End not directly on the end wall 15 of the cylinder housing 6 is supported, but only indirectly on an approximately pot-shaped insert 44.
  • the insert 44 is replaced by a Counters depression 45 of the end wall 15 which surrounds the central opening 38.
  • At at its inner end of the insert 44 forms an opening 46.
  • In this opening 46 of the Chambers 27, 28 surrounding central pin 47 of the pressure plate 13 centered enter until Support surfaces 48 which surround the pin 47, on the end face 49 of the insert 44th issue. In this way it is prevented that in the normal operation of the Actuating cylinder of the pin 47 of the pressure plate 13 against the connecting portion 31st of the parked screw member 30 abuts.
  • the distance of the pin 47 to Connecting portion 31 is less in the position of FIG. 1, than the height of the Surveys 41. Therefore, should the threaded nut 35 unintentionally loosen, the radial extensions 31a, 31b do not turn away below the elevations 41. A losing the screw is excluded in pressurized pressure chamber 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Braking Arrangements (AREA)
  • Braking Systems And Boosters (AREA)
EP04026129A 2003-11-14 2004-11-04 Cylindre d'actionnement , de préférence pour systèmes pneumatiques de freinage Active EP1531274B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10353362 2003-11-14
DE10353362A DE10353362A1 (de) 2003-11-14 2003-11-14 Betätigungszylinder, vorzugsweise für druckluftbetriebene Bremsanlagen

Publications (3)

Publication Number Publication Date
EP1531274A2 true EP1531274A2 (fr) 2005-05-18
EP1531274A3 EP1531274A3 (fr) 2005-10-19
EP1531274B1 EP1531274B1 (fr) 2006-10-25

Family

ID=34428745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04026129A Active EP1531274B1 (fr) 2003-11-14 2004-11-04 Cylindre d'actionnement , de préférence pour systèmes pneumatiques de freinage

Country Status (4)

Country Link
EP (1) EP1531274B1 (fr)
AT (1) ATE343728T1 (fr)
DE (2) DE10353362A1 (fr)
ES (1) ES2275165T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009059817A1 (de) 2009-12-21 2011-06-22 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH, 80809 Scheibenbremse

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3331291A (en) * 1965-07-15 1967-07-18 Royal Industries Emergency brake actuator
EP0315463A2 (fr) * 1987-11-06 1989-05-10 Indian Head Industries, Inc. Dispositif d'actionnement de frein résistant aux dégradations
US5655431A (en) * 1994-04-01 1997-08-12 Nai Anchorlok, Inc. Spring brake actuator, caging bolt assembly therefor, and method of assembly thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3913536A1 (de) * 1989-04-25 1990-10-31 Teves Gmbh Alfred Bremskraftverstaerker, insbesondere fuer kraftfahrzeuge
JP4465878B2 (ja) * 2000-12-28 2010-05-26 アイシン精機株式会社 ２段作動アクチュエータ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3331291A (en) * 1965-07-15 1967-07-18 Royal Industries Emergency brake actuator
EP0315463A2 (fr) * 1987-11-06 1989-05-10 Indian Head Industries, Inc. Dispositif d'actionnement de frein résistant aux dégradations
US5655431A (en) * 1994-04-01 1997-08-12 Nai Anchorlok, Inc. Spring brake actuator, caging bolt assembly therefor, and method of assembly thereof

Also Published As

Publication number Publication date
EP1531274A3 (fr) 2005-10-19
DE502004001844D1 (de) 2006-12-07
ES2275165T3 (es) 2007-06-01
EP1531274B1 (fr) 2006-10-25
DE10353362A1 (de) 2005-06-16
ATE343728T1 (de) 2006-11-15

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