EP3269511B1 - Vorrichtung zum greifen von dieselmotorinjektoren - Google Patents

Vorrichtung zum greifen von dieselmotorinjektoren Download PDF

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Publication number
EP3269511B1
EP3269511B1 EP17180316.6A EP17180316A EP3269511B1 EP 3269511 B1 EP3269511 B1 EP 3269511B1 EP 17180316 A EP17180316 A EP 17180316A EP 3269511 B1 EP3269511 B1 EP 3269511B1
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EP
European Patent Office
Prior art keywords
injector
block
main body
extraction
seat
Prior art date
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Active
Application number
EP17180316.6A
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English (en)
French (fr)
Other versions
EP3269511A1 (de
Inventor
Davide Verrillo
Antonio Verrillo
Marco Mitrati
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.)
Govoni SRL
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Govoni SRL
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Publication date
Application filed by Govoni SRL filed Critical Govoni SRL
Publication of EP3269511A1 publication Critical patent/EP3269511A1/de
Application granted granted Critical
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0035—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for motor-vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors

Definitions

  • the present invention relates to a device for gripping diesel engine injectors.
  • injectors are known which are accommodated in adapted seats provided in the heads of diesel engines to introduce atomized fuel in the combustion chamber.
  • injectors are known which are provided, proximate to the threaded end designed to remain protruding outside the corresponding seat, with a plastic connection body below which a grip ring is provided.
  • a grip device which comprises a substantially C-shaped main body and is constituted by a disk provided with a seat for coupling with a threaded extraction bar and by a fork provided with a pair of prongs which are adapted to surround laterally the injector at the corresponding ring and are connected by a vertical connecting wall.
  • the prongs of the fork may open or the main body itself may be deformed, rendering the operation difficult if not ineffective.
  • a version of a grip device in which there is a grip half-ring which couples to the fork of the main body to form a retention seat for the grip ring of the injector by means of transverse screws for temporary connection.
  • these grip devices require having a certain space in an axial direction in the region for coupling between the main body and the half-ring in order to be able to insert the connecting screws.
  • injector grip devices of the known type are not free from drawbacks, which include the fact that they cannot be used for types of injectors and engines that have small maneuvering spaces in an axial direction.
  • DE 20 2010 010090 discloses a device for gripping diesel engine injectors as defined in the preamble of claim 1.
  • DE 20 2004 010202 discloses a puller jig for removing joints from press fit mountings wherein one screw is inserted through one through hole formed in a anchoring portion and engaged in a corresponding threaded hole formed in the block of the device main body.
  • the aim of the present invention is to eliminate the drawbacks noted above of the background art, by providing a device for gripping diesel engine injectors that allows to apply an adequate grip in order to extract intact injectors even in situations in which the geometry of the engine and/or of the injector on which one must intervene have small maneuvering spaces.
  • an object of the present invention is to be able to keep the injector intact without requiring the removal of the plastic connecting body in order to allow reuse where possible, reducing intervention costs.
  • a further object of the present invention is to be effective and reliable, allowing the transmission of an adequate traction force in the extraction direction to the injector without the risk of undergoing deformations and failures.
  • Another object of the present invention is to have a structure that is simple, relatively easy to provide in practice, safe in use, effective in operation, and relatively modest in cost.
  • the present device for gripping diesel engine injectors, of the type comprising a threaded end which is adapted to remain exposed from the corresponding seat on the engine head and is associated with a connecting body and with a grip ring, comprising a substantially C-shaped main body, provided with a block which is associated with a coupling seat that can be associated with an extraction bar and with a fork that can be associated with said injector at the corresponding grip ring, which are mutually associated by means of at least one connecting wall, a clamping element associated with the fork of said main body so as to form between them a retention seat in the extraction direction of the grip ring of said injector, means for the temporary connection of said main body and of said clamping element and a contrast plate which supports said clamping element and is provided with a portion for anchoring to said block, the connecting means being interposed between the anchoring portion of the contrast plate and the block of the main body, characterized in that said coupling
  • the reference numeral 1 generally designates a device for gripping diesel engine injectors.
  • the device 1 is adapted to be used to extract a conventional injector I from the corresponding seat on the head T of a diesel engine.
  • the injector I is of the type provided with a threaded end F which is adapted to remain exposed from the corresponding seat on the head T of the engine and is associated with a connecting body C made of plastic and with a grip ring G.
  • the device 1 can be incorporated in a conventional tool 100 for extracting injectors I, of the type that comprises a bridge 101 for supporting a threaded extraction bar 102 adapted to be arranged on the head T of the engine in order to perform the intervention for removal of the injector I from its seat.
  • the device 1 In any case, during use the device 1 must be associated with an extraction bar 102.
  • the device 1 can be inserted in a kit which comprises various tools for the complete extraction of injectors I and parts of injectors from the corresponding seat on the head T of diesel engines.
  • the device 1 comprises a substantially C-shaped main body 2 provided with a block 3, associated with a seat 4 for coupling to the extraction bar 102, and with a fork 5 that is adapted to be arranged with the corresponding prongs on opposite sides of the injector I at the corresponding ring G, which are mutually connected by means of a connecting wall 7.
  • the device 1 comprises a clamping element 8 which is adapted to be associated with the fork 5 so as to form between said elements a seat 9 for retention in the extraction direction (indicated by the arrow E in the figures) of the injector I and means 10 for temporary connection of the main body 2 and of the clamping element 8.
  • the device 1 comprises a contrast plate 11 which supports at one end the clamping element 8 and at the opposite end a portion 12 for anchoring to the block 3 of the main body 2.
  • the temporary connection means 10 are interposed between the block 3 and the anchoring portion 12, so as to contain the axial space occupation of the device 1 at the fork 5.
  • the contrast plate 11 and the clamping element 8 are formed integrally and monolithically.
  • the clamping element 8 keeps the prongs 6 of the fork 5 gripped on the ring G of the injector I during the intervention and the contrast plate 11 stiffens the main body 2, avoiding its deformation under stress.
  • the device 1 comprises a pair of connecting pins 13 which are inserted in corresponding hollows 14 and 15 formed respectively at the ends of the prongs 6 and in the clamping element 8.
  • the anchoring portion 12 is provided with a slot 16 for the accommodation of one side of the block 3, so as to constrain in the extraction direction E the main body 2 and the contrast plate 11.
  • the temporary connection means 10 have at least one and more preferably two screws 17 inserted through respective through holes 18 formed in the anchoring portion 12 and engaged in corresponding threaded holes 19 formed in the block 3.
  • the through holes 18 are formed at the slot 16 and the corresponding threaded holes 19 laterally to the coupling seat 4.
  • the anchoring plate 12 is provided with at least one slot 20 for the exit of the connecting body C of the injector I during use.
  • the shape, dimension and position of the slot 20 can vary as a function of the type of injector I on which one must intervene.
  • the coupling seat 4 passes through the block 3 in the extraction direction E and the device 1 also comprises guiding means 21 for the insertion of the extraction bar 102, which are adapted to be accommodated in the inside curve of the main body 2, between the block 3 and the threaded end F of the injector I.
  • the guiding means 21 comprise a sleeve 22 which is threaded internally and is adapted to be coupled at one side to the threaded end F of the injector I and at the opposite side to the threaded bar 102.
  • the sleeve 22 is of the type of a conventional long nut in order to facilitate its coupling with the threaded end F of the injector I by using a key-like tool of the known type.
  • the guiding means 21 comprise a bush 23, inside which the extraction bar 102 that connects the sleeve 22 to the block 3 is inserted so as to pass through.
  • the bush 23 occupies, in the extraction direction E, the free space in the inside curve of the main body 2 between the block 3 and the sleeve 22, further stiffening the device 1.
  • the sleeve 22 is screwed onto the corresponding threaded end F.
  • the main body 2 is arranged with the corresponding fork 5 at the ring G of the injector I and the contrast plate 11 is arranged adjacently, locking it with the screws 17 and the pins 13.
  • the bush 23 is arranged between the block 3 and the upper end of the sleeve 22 and the extraction bar 102 is inserted by screwing it into the coupling seat 4 until it passes through said bush in order to screw partially into the sleeve 22.
  • the injector I is extracted according to conventional methods, optionally with the aid of a supporting bridge 101, by acting on the extraction bar 102 manually, with an impact mass or with an actuation piston.
  • the described invention achieves the intended aim and objects, and in particular the fact is stressed that the grip device according to the invention has a reduced axial space occupation in the clamping region around the injector grip ring, so that it can be used even in situations with small maneuvering spaces, allowing to transfer to the injector an adequate extraction action without the need to remove the connecting body.
  • the grip device according to the invention is effective and reliable, since it allows to optimize the transfer to the injector of the traction action in the extraction direction, without the occurrence of deformations of said device or accidental releases of the injector being processed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (11)

  1. Eine Vorrichtung (1) zum Greifen von Dieselmotorinjektoren (I) von der Art, die ein Gewindeende (F) umfasst, das ausgebildet ist, um vom dazugehörigen Sitz im Motorkopf (T) frei zu bleiben, und mit einem Verbindungskörper (C) und mit einem Greifring (G) verbunden ist, einen im Wesentlichen C-förmigen Hauptkörper (2) umfassend, ausgestattet mit einem Block (3), der mit einem Kopplungssitz (4) verbunden ist, welcher ein durchgehender Sitz ist und mit einer Extraktionsstange (102) und mit einer Gabel (5) verbunden ist, die mit dem Injektor (I) am entsprechenden Greifring (G) verbunden werden kann, welche miteinander durch mindestens eine Verbindungswand (7) verbunden sind;
    ein Klemmelement (8), das mit der Gabel (5) des Hauptkörpers (2) verbunden ist, um zwischen ihnen einen Haltesitz (9) in die Extraktionsrichtung des Greifrings (G) des Injektors (I) zu bilden,
    Mittel (10) zur vorübergehenden Verbindung des Hauptkörpers (2) und des Klemmelements (8) und
    eine Kontrastplatte (11), die das Klemmelement trägt und mit einem Abschnitt (12) zur Verankerung an dem Block (3) ausgestattet ist, wobei die Mittel (10) zur vorübergehenden Verbindung zwischen dem Verankerungsabschnitt (12) der Kontrastplatte (11) und dem Block (3) des Hauptkörpers (2) angeordnet sind;
    dadurch gekennzeichnet, dass es Führungsmittel (21) zum Einsetzen der Extraktionsstange (102) gibt, die in der inneren Krümmung des Hauptkörpers (2) zwischen dem Block (3) und dem Gewindeende (F) des Injektors (I) untergebracht sind.
  2. Die Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass sie ein Paar von Verbindungsstiften (13) umfasst, welche in entsprechende Öffnungen (14, 15) eingeführt sind, die an den Enden der Zinken (6) der Gabel (5) und in dem Klemmelement (8) geformt sind.
  3. Die Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass der Verankerungsabschnitt (12) einen Schlitz (16) zur Aufnahme einer Seite des Blocks (3) umfasst.
  4. Die Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die Mittel (10) zur vorübergehenden Verbindung mindestens eine Schraube (17) umfassen, die durch mindestens eine Durchgangsbohrung (18) eingeführt wird, welche in dem Verankerungsabschnitt (12) geformt ist, und in ein entsprechendes in dem Block (3) geformtes Gewindeloch (19) eingreift.
  5. Die Vorrichtung (1) gemäß den Ansprüchen 3 und 4, dadurch gekennzeichnet, dass die mindestens eine Durchgangsbohrung (18) an dem Schlitz (12) geformt ist, und dadurch, dass das entsprechende Gewindeloch (19) seitlich vom Kopplungssitz (4) geformt ist.
  6. Die Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die Kontrastplatte (11) mindestens einen Schlitz (20) für den Austritt des Verbindungskörpers (C) des Injektors (I) umfasst.
  7. Die Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die Führungsmittel (21) eine Hülse (22) mit Innengewinde umfassen, die ausgebildet ist, um an einem Ende mit dem Gewindeende (F) des Injektors (I) und am anderen Ende mit der Extraktionsstange (102) gekoppelt zu werden.
  8. Die Vorrichtung (1) gemäß Anspruch 7, dadurch gekennzeichnet, dass die Führungsmittel (21) eine Buchse (23) umfassen, in welche die Extraktionsstange (102), die ausgebildet ist, um den Block (3) und die Hülse (22) zu verbinden, durchgängig eingeführt ist.
  9. Die Vorrichtung (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die Kontrastplatte (11) und das Klemmelement (8) integral und monolithisch geformt sind.
  10. Ein Werkzeug (100) zur Extraktion von Injektoren (I), dadurch gekennzeichnet, dass es eine Tragbrücke (101) für eine Extraktionsstange (102) umfasst, die mit einer Greifvorrichtung (1) gemäß einem oder mehreren der obigen Ansprüche verbunden ist.
  11. Ein Kit zur vollständigen Extraktion von Injektoren und Injektorteilen aus dem entsprechenden Sitz im Kopf von Dieselmotoren, dadurch gekennzeichnet, dass es eine Vorrichtung (1) gemäß einem oder mehreren der Ansprüche 1-9 umfasst.
EP17180316.6A 2016-07-14 2017-07-07 Vorrichtung zum greifen von dieselmotorinjektoren Active EP3269511B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202016103790.5U DE202016103790U1 (de) 2016-07-14 2016-07-14 Abziehvorrichtung für Einspritzdüsen von Dieselmotoren

Publications (2)

Publication Number Publication Date
EP3269511A1 EP3269511A1 (de) 2018-01-17
EP3269511B1 true EP3269511B1 (de) 2019-12-11

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DE (1) DE202016103790U1 (de)

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CN106762305B (zh) * 2016-12-27 2022-08-09 中国船舶重工集团公司第七一一研究所 一种避免喷油器定位销拆装断裂的装置及其使用方法
CN107775590B (zh) * 2017-09-30 2019-05-07 安徽江淮汽车集团股份有限公司 一种正时链条润滑喷嘴压装工具
KR102013201B1 (ko) * 2018-06-28 2019-08-22 황도용 인젝터 탈거용 스패너 지그

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DE202004009756U1 (de) * 2004-06-21 2004-09-02 Klann-Spezial-Werkzeugbau-Gmbh Vorrichtung mit Stützgabel zum Ausziehen eines Düsenstockes
DE202004010202U1 (de) * 2004-06-30 2004-09-02 Klann-Spezial-Werkzeugbau-Gmbh Gelenkauszieher für Kraftfahrzeugachsen
DE202007009073U1 (de) * 2007-06-28 2007-08-30 Klann-Spezial-Werkzeugbau-Gmbh Vorrichtung zum Ausziehen einer Einspritzdüse
DE202010010090U1 (de) * 2010-07-10 2010-10-14 Klann-Spezial-Werkzeugbau-Gmbh Vorrichtung zum Ausziehen einer Einspritzdüse
US9751199B2 (en) * 2014-02-10 2017-09-05 Tiger Tool International Incorporated Disk brake wheel stud insertion and removal tool

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Publication number Publication date
EP3269511A1 (de) 2018-01-17
DE202016103790U1 (de) 2016-10-27

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