DE3500336A1 - Play compensation in the joints of a connecting rod - Google Patents

Play compensation in the joints of a connecting rod

Info

Publication number
DE3500336A1
DE3500336A1 DE19853500336 DE3500336A DE3500336A1 DE 3500336 A1 DE3500336 A1 DE 3500336A1 DE 19853500336 DE19853500336 DE 19853500336 DE 3500336 A DE3500336 A DE 3500336A DE 3500336 A1 DE3500336 A1 DE 3500336A1
Authority
DE
Germany
Prior art keywords
coupling rod
joints
spring
force
play
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Withdrawn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
DE19853500336
Other languages
German (de)
Inventor
Dieter Dipl.-Ing. 5060 Bergisch Gladbach Hünten
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz 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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to DE19853500336 priority Critical patent/DE3500336A1/en
Publication of DE3500336A1 publication Critical patent/DE3500336A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
    • F02M59/26—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders
    • F02M59/28—Mechanisms therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
    • F02D1/10—Transmission of control impulse to pump control, e.g. with power drive or power assistance mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

To avoid play in joints (16, 17) for accurately guided but exposed connecting rods (9), the joints (16, 17) have hitherto frequently been lined with bushes. This had the disadvantage of complicated manufacture, maintenance of tolerances for the bearing bush and the requirement for lubrication and sealing. In addition, there was no guarantee that play would not arise. The play compensation now provided is achieved by means of a compression spring (10, 11) which presses against the outside of the joint bearing (7, 8) and thus presses the articulated lever (5, 6) with non-positive engagement against the joint pin (14, 15). Even high wear in the joint (7, 8) is thus compensated with an almost unchanged position of the articulated levers (5, 6) relative to one another. <IMAGE>

Description

Spielausgleich in den Gelenken Backlash compensation in the joints

einer Koppelstange Die Erfindung betrifft eine Koppelstange zwischen mindestens zwei Anlenkhebeln, insbesondere als Verbindung der Stellhebel zweier Einspritzpumpen, wobei die Anlenkhebel mit der Koppelstange über Gelenke verbunden sind. a coupling rod The invention relates to a coupling rod between at least two pivot levers, in particular as a connection between the two adjusting levers Injection pumps, the linkage lever being connected to the coupling rod via joints are.

Die Koppelstange bestimmt die Lage der Anlenkhebel. Auftretender Verschleiß in den Gelenken verändert die Lage der Anlenkhebel sowie der Regelstangen und damit den Füllungsgrad der Einspritzpumpe.The coupling rod determines the position of the link lever. Occurring wear in the joints changed the position of the linkage lever and the control rods and thus the filling level of the injection pump.

Heute verwendete Verbindungsgestänge, die offenliegen und exakt geführt werden müssen, haben vielfach ausgebuchste Gelenke. Diese Gelenkgestaltung erfordert eine genaue Fertigung und Einhaltung der Toleranzen für die Lagerbuchsen.Connecting rods used today that are exposed and precisely guided often have bulging joints. This joint design requires accurate manufacture and compliance with the tolerances for the bearing bushes.

Diese Gelenke müssen zur Vermeidung von Verschleiß abgedichtet und geschmiert werden.These joints must be sealed and sealed to prevent wear be lubricated.

Der Erfindung liegt die Aufgabe zugrunde, die über eine Koppelstange bestimmte Lage von Anlenkhebeln zueinander auch bei Verschleiß in den Anlenkpunkten der Koppelstange durch einfache Maßnahmen weitgehend unverändert aufrechtzuerhalten.The invention is based on the object of a coupling rod certain position of the linkage levers to each other even with wear in the linkage points to maintain the coupling rod largely unchanged by simple measures.

Diese Aufgabe wird mit dem im Kennzeichen des Anspruchs 1 genannten Merkmal gelöst. Auftretender Verschleiß wird stets in eine Richtung hin verlagert. Diese Anordnung ermöglicht bei offenliegenden, wartungsfreien Koppelstangen für genaue Steuerbewegungen auch bei Verschleiß in den Gelenken nahezu gleiche Lagen der Anlenkhebel zueinander.This task is cited in the characterizing part of claim 1 Feature solved. Any wear that occurs is always shifted in one direction. This arrangement allows for exposed, maintenance-free coupling rods for exact control movements even with wear in the joints almost identical positions the linkage lever to each other.

In Ausgestaltung der Erfindung ist vorgesehen, daß die Kraft größer oder gleich der Stellkraft ist. Dadurch wird sichergestellt, daß die Stellkraft kein Spiel in den Gelenken verursachen kann.In an embodiment of the invention it is provided that the force is greater or is equal to the actuating force. This ensures that the actuating force cannot cause any play in the joints.

Die Kraftbeaufschlagung erfolgt vorteilhaft durch eine Schraubenfeder, die wartungsfrei, kostengünstig, leicht austauschbar sowie bei entsprechender Führung der Feder auch auslenkbar ist, z. B. durch die Ansenkung in der Auflage und dem Anlenkhebel.The application of force is advantageously carried out by a helical spring, The maintenance-free, inexpensive, easily exchangeable and with appropriate guidance the spring is also deflectable, e.g. B. by the countersink in the edition and the Linkage lever.

Weitere Merkmale der Erfindung ergeben sich aus den weiteren Ansprüchen, der Beschreibung und der Zeichnung, in der ein Ausführungsbeispiel vereinfacht dargestellt ist, das im folgenden näher beschrieben wird. Es zeigt: Fig. 1 eine Seitenansicht auf zwei über eine Koppelstange verbundene Stellhebel von Einspritzpumpen; Fig. 2 eine Draufsicht auf die Koppelstange in Fig. 1 mit teilgeschnittenen Gelenken.Further features of the invention emerge from the further claims, the description and the drawing, in which an exemplary embodiment is shown in simplified form which is described in more detail below. It shows: FIG. 1 a side view on two control levers of injection pumps connected by a coupling rod; Fig. 2 shows a plan view of the coupling rod in FIG. 1 with partially sectioned joints.

Das in Fig. 1 dargestellte verbindungsgestänge einer Drehzahlverstellung für einen Dieselmotor besteht unter anderem aus den Anlenkhebel 5, 6, die an einem Ende an der Einspritzpumpe 1, 2 drehbar befestigt sind. An jedem Anlenkhebel 5, 6 ist auf ca. der halben Hebellänge die Regelstange 3, 4 der Einspritzpumpe 1, 2 angelenkt. Am anderen, freien Ende der Anlenkhebel 5, 6, das von der Einspritzpumpe 1, 2 entfernt liegt, ist der Hebel mit einem Ansatz versehen, der als Gelenklager 7, 8 dient. Das Gelenklager 7, 8 ist mit einer Bohrung versehen für den eingreifenden Gelenkbolzen 14, 15, der in der Koppelstange 9 befestigt, z. B. eingeschrumpft ist. Der Spielausgleich im Gelenk erfolgt durch je eine Schraubenfeder 10, 11, die parallel zur Koppelstange 9 angebracht ist. Beide Schraubenfedern 10, 11 liegen auf der gleichen Seite der Anlenkhebel 5, 6, derart, daß ihre Druckkräfte in die gleiche Richtung weisen und die Gelenke 16, 17 kraftbeaufschlagen.The linkage shown in Fig. 1 of a speed adjustment for a diesel engine consists, among other things, of the articulation lever 5, 6, which is attached to a End at the Injection pump 1, 2 are rotatably mounted. On everyone The articulation lever 5, 6 is the control rod 3, 4 of the injection pump at about half the lever length 1, 2 hinged. At the other, free end of the articulation lever 5, 6, that of the injection pump 1, 2 is removed, the lever is provided with an approach that acts as a pivot bearing 7, 8 is used. The pivot bearing 7, 8 is provided with a bore for the engaging Hinge pin 14, 15, which is fastened in the coupling rod 9, for. B. is shrunk. The play compensation in the joint is done by a helical spring 10, 11, which are parallel to the coupling rod 9 is attached. Both coil springs 10, 11 are on the same Side of the pivot lever 5, 6, such that their compressive forces in the same direction point and apply force to the joints 16, 17.

Es kann auch vorteilhaft sein, auf der anderen Seite der Anlenkhebel gleichartig wirkende Zugfedern anzuordnen.It can also be advantageous to have the link lever on the other side similarly acting tension springs to be arranged.

Ebenso kann es zweckmäßig sein, anstatt von Federn andere kräfteausübende Vorrichtungen anzuordnen, so z. B. Kolben/Zylindereinheiten.It can also be useful to use other forces instead of springs To arrange devices, such. B. Piston / cylinder units.

An jedem Anlenkhebel 5, 6 ist in seiner Längsseite im Bereich des Gelenklagers 7, 8 eine Ansenkung vorgesehen, deren Mittelachse sich um 90 ° versetzt zur Achse der Lagerbohrung befindet. Beide Ansenkungen weisen in dieselbe Richtung. In diesen Ansekungen sind die Enden der Schraubenfedern 10, 11 geführt. Eine Ansenkung gleicher Größe ist in die Auflage 12, 13 eingebracht, die als Federabstützung dient und auf der Koppelstange 9 angeschweißt ist. Die Verbindung der Koppelstange 9 mit dem Anlenkhebel 5, 6 erfolgt im Gelenklager 7, 8 durch den Gelenkbolzen 14, 15.On each articulation lever 5, 6 is in its longitudinal side in the area of Joint bearing 7, 8 provided a countersink, the central axis of which is offset by 90 ° to the axis of the bearing bore. Both countersinks point in the same direction. The ends of the coil springs 10, 11 are guided in these countersinks. A countersink the same size is introduced into the support 12, 13, which serves as a spring support and is welded to the coupling rod 9. The connection of the coupling rod 9 with the articulation lever 5, 6 takes place in the pivot bearing 7, 8 through the pivot pin 14, 15.

Fig. 2 zeigt die Draufsicht auf des Verbindungsgestänge.Fig. 2 shows the top view of the connecting rod.

Das übertrieben dargestellte Gelenkspiel 18, 19 wird durch die Federkraft der Schraubenfeder 10, 11, ausgeglichen.The joint play 18, 19, shown exaggerated, is caused by the spring force the coil spring 10, 11, balanced.

Die Schraubenfedern stellen eine spielfreie, kraftschlüssige Anlage des Anlenkhebels 5, 6 an den Gelenkbolzen 14, 15 sicher. Die Federkraft muß so ausgelegt werden, daß bei normalen Regelvorgängen kein Anlagewechsel stattfindet, d. h. die Federkraft wird gleich oder größer als die Stellkraft ausgelegt. Das Einsetzen einer zu starken Feder sollte dagegen vermieden werden, da dies einen unnötig hohen Gelenkverschleiß zur Folge hätte. Vorteilhaft sind gleich große Federkräfte, die auf die Gelenke einwirken, so daß ein zwangsweise vorliegender Verschleiß in beiden Gelenken etwa gleich ist. So wird gewährleistet, daß die Stellung der Anlenkhebel zueinander durch den Spielausgleich unverändert bleibt. Im gezeiyten Ausführungsbeispiel haben die Schraubenfedern zweckmäßig gleiche Federkonstanten; die Schraubenfedern können vorteilhaft auch gleich ausgebildet sein.The coil springs provide a backlash-free, force-fit system of the linkage lever 5, 6 on the hinge pin 14, 15 securely. The spring force must be designed in this way that no change of system takes place during normal control processes, d. H. the The spring force is designed to be equal to or greater than the actuating force. The insertion of a On the other hand, too strong a spring should be avoided, as this causes unnecessarily high joint wear would result. Equally large spring forces acting on the joints are advantageous act so that an inevitable wear in both joints about is equal to. This ensures that the position of the linkage levers to one another the backlash compensation remains unchanged. In the illustrated embodiment, the Helical springs expediently have the same spring constants; the coil springs can be beneficial also be designed the same.

Claims (7)

Patentansprüche 1. Koppelstange zwischen mindestens zwei Anlenkhebeln (5, 6), insbesondere als Verbindung der Stellhebel (3, 4) zweier Einspritzpulapen (1, 2), wobei die Anlenkhebel (5, 6) mit der Koppelstange (9) über Gelenke (7, 8) verbunden sind, dadurch gekennzeichnet, daß die Gelenke (7, 8) in eine Kraftrichtung der Koppelstange einseitig kraftbeaufschlagt sind. Claims 1. Coupling rod between at least two link levers (5, 6), in particular as a connection between the adjusting levers (3, 4) of two injection pulps (1, 2), whereby the articulation lever (5, 6) with the coupling rod (9) via joints (7, 8) are connected, characterized in that the joints (7, 8) in one direction of force the coupling rod are subjected to force on one side. 2. Koppelstange nach Anspruch 1, dadurch gekennzeichnet, daß die Kraftbeaufschlagung größer oder gleich der Stellkraft ist.2. Coupling rod according to claim 1, characterized in that the application of force is greater than or equal to the actuating force. 3. Koppelstange nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Kraftbeaufschlagung durch je eine Feder, vrrzugsweise Schraubenfeder (10, 11) erfolgt.3. Coupling rod according to claim 1 or 2, characterized in that the application of force by a spring each, preferably a helical spring (10, 11) he follows. 4. Koppelstange nach Anspruch 3, dadurch gekennzeichnet, daß die Federn (10, 11) gleiche Federkonstanten haben.4. Coupling rod according to claim 3, characterized in that the springs (10, 11) have the same spring constants. 5. Koppelstange nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die Feder (10, 11) etwa parallel zur Koppelstange (9) liegt und sich mit einem Ende am Anlenkhebel (5, 6) und mit dem anderen Ende an der Koppelstange (9) an einer Auflage (12, 13) abstützt.5. Coupling rod according to claim 3 or 4, characterized in that the spring (10, 11) is approximately parallel to the coupling rod (9) and has one end on the pivot lever (5, 6) and with the other end on the coupling rod (9) on one Support (12, 13) is supported. 6. Koppelstange nach Anspruch 5, dadurch gekennzeichnet, daß die Feder (10, 11) seitlich neben der Koppelstange (9) liegt und an einer an der Koppelstange (9) befestigten Auflage (12, 13) anliegt.6. Coupling rod according to claim 5, characterized in that the spring (10, 11) is laterally next to the coupling rod (9) and on one of the coupling rod (9) attached support (12, 13) is applied. 7. Koppelstange nach Anspruch 5 oder 6, da durch gekennzeichnet, daß die Enden der Feder (10, 11) in Ansenkungen der Anlenkhebel (5, 6) und der Auflagen (12, 13) gehalten sind.7. coupling rod according to claim 5 or 6, characterized in that the ends of the spring (10, 11) in countersinks of the pivot lever (5, 6) and the supports (12, 13) are held.
DE19853500336 1985-01-08 1985-01-08 Play compensation in the joints of a connecting rod Withdrawn DE3500336A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853500336 DE3500336A1 (en) 1985-01-08 1985-01-08 Play compensation in the joints of a connecting rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853500336 DE3500336A1 (en) 1985-01-08 1985-01-08 Play compensation in the joints of a connecting rod

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DE3500336A1 true DE3500336A1 (en) 1986-07-10

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DE19853500336 Withdrawn DE3500336A1 (en) 1985-01-08 1985-01-08 Play compensation in the joints of a connecting rod

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5143470A (en) * 1990-11-29 1992-09-01 Mefina S.A. Device for pivotable linkage between two levers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH179543A (en) * 1934-09-11 1935-09-15 Sulzer Ag Fuel pump for injection internal combustion engines, in which the reciprocating delivery piston is rotated to regulate the delivery rate.
DE679589C (en) * 1936-09-11 1939-08-09 Messerschmitt Boelkow Blohm Multi-piston pumps, especially fuel pumps for internal combustion engines
FR970438A (en) * 1947-08-23 1951-01-04 Liquid pump usable in particular for injecting fuel into internal combustion engines
DE1525006A1 (en) * 1964-02-06 1969-06-19 Autmative Products Company Ltd Ball joint connection
AT287403B (en) * 1967-09-26 1971-01-25 Friedmann & Maier Ag Device for coupling the control rod of a fuel injection pump with the connecting rod

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH179543A (en) * 1934-09-11 1935-09-15 Sulzer Ag Fuel pump for injection internal combustion engines, in which the reciprocating delivery piston is rotated to regulate the delivery rate.
DE679589C (en) * 1936-09-11 1939-08-09 Messerschmitt Boelkow Blohm Multi-piston pumps, especially fuel pumps for internal combustion engines
FR970438A (en) * 1947-08-23 1951-01-04 Liquid pump usable in particular for injecting fuel into internal combustion engines
DE1525006A1 (en) * 1964-02-06 1969-06-19 Autmative Products Company Ltd Ball joint connection
AT287403B (en) * 1967-09-26 1971-01-25 Friedmann & Maier Ag Device for coupling the control rod of a fuel injection pump with the connecting rod

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5143470A (en) * 1990-11-29 1992-09-01 Mefina S.A. Device for pivotable linkage between two levers

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