DE1005801B - Stroke adjustment on crank drives - Google Patents

Stroke adjustment on crank drives

Info

Publication number
DE1005801B
DE1005801B DEH14393A DEH0014393A DE1005801B DE 1005801 B DE1005801 B DE 1005801B DE H14393 A DEH14393 A DE H14393A DE H0014393 A DEH0014393 A DE H0014393A DE 1005801 B DE1005801 B DE 1005801B
Authority
DE
Germany
Prior art keywords
connecting rod
stroke
adjusting element
crankshaft
adjustment
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.)
Pending
Application number
DEH14393A
Other languages
German (de)
Inventor
Walter Baensch
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.)
Andreas Hofer Hochdruck Apparatebau GmbH
Original Assignee
Andreas Hofer Hochdruck Apparatebau 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
Application filed by Andreas Hofer Hochdruck Apparatebau GmbH filed Critical Andreas Hofer Hochdruck Apparatebau GmbH
Priority to DEH14393A priority Critical patent/DE1005801B/en
Publication of DE1005801B publication Critical patent/DE1005801B/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/46—Gearings comprising primarily only links or levers, with or without slides with movements in three dimensions
    • F16H21/50—Gearings comprising primarily only links or levers, with or without slides with movements in three dimensions for interconverting rotary motion and reciprocating motion

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Description

Hubverstellung an Kurbeltriebwerken Es sind ältere Antriebe bekannt, bei denen eine Hubverstellung durch Verschieben eines schiefen Zylinders auf einer geraden Welle oder durch Verschieben der teilweise als schiefes Prisma ausgebildeten Welle in einem Exzenter erzielt wird. Die dabei auftretenden Axialkräfte müssen daher durch zusätzliche Gegenlager aufgenommen werden.Stroke adjustment on crank drives Older drives are known where a stroke adjustment by moving an oblique cylinder on a straight shaft or by moving the partially designed as an oblique prism Wave is achieved in an eccentric. The resulting axial forces must therefore be taken up by additional counter bearings.

Die vorliegende Erfindung löst die Aufgabe dadurch, daß ein einerseits im Pleuelstangenkopf kugelförmig und pendelartig angelenktes oder ein pendelartig angelenktes Verstellorgan, andererseits von einem Kurbelzapfen einer einseitig fest gelagerten Kurbelwelle betätigt wird, wobei die stufenlose Verstellung durch Schwenken der Pleuelstange mit dem im Pleuelstangenkopf angelenkten Verstellorgan in Achsrichtung de ,r Kurbelwelle oder durch Schwenken des Verstellorgans um die Achse der Kurbelwelle erfolgt.The present invention solves the problem in that a on the one hand in the connecting rod head spherically and pendulum-like articulated or a pendulum-like articulated adjusting member, on the other hand from a crank pin on one side fixed bearing crankshaft is actuated, the stepless adjustment by pivoting of the connecting rod with the adjusting member articulated in the connecting rod head in the axial direction de, r crankshaft or by pivoting the adjusting member around the axis of the crankshaft he follows.

Die Durchführung und Arbeitsweise einer solchen Hubverstellung wird durch zwei Ausführungsformen an Hand der schematischen Abb. 1 bis 7 nachstehend beschrieben. In einem Kurbelgehäuse 1 ist eine Kurbelwelle 2 einseitig gelagert. Eine Pleuelstange 3 betätigt einen Kreuzkopf 4, mit dem eine Kolbenstange 5 verbunden ist.The implementation and operation of such a stroke adjustment is by two embodiments with reference to the schematic Fig. 1 to 7 below described. A crankshaft 2 is mounted on one side in a crankcase 1. A connecting rod 3 actuates a cross head 4 to which a piston rod 5 is connected is.

Die Hubverstellung nach Abb. 1 bis 3 erfolgt nun dadurch, daß das im Kopf der Pleuelstange 3 auf einer Kugeloberfläche gelagerte Verstellorgan 6 auf dem winklig zur Achse der Kurbelwelle 2 angeordneten Kurbelarm 7 aus der Lage beim größten Hub nach Abb. 2 in die Nullage nach Abb. 3 verschoben wird.The stroke adjustment according to Fig. 1 to 3 now takes place in that the Adjusting member 6 mounted on a spherical surface in the head of the connecting rod 3 the crank arm 7 arranged at an angle to the axis of the crankshaft 2 from the position at largest stroke according to Fig. 2 is shifted to the zero position according to Fig. 3.

Das stufenlose Verstellen und das Festhalten des Verstellorgans 6 in jeder Lage zwischen Null- und Vollhub erfolgt mittels einer Kuppelstange 8, die einerseits am Verstellorgan 6 angelenkt, anderseits mit einem Kugelgelenk in einer Gewindebüchse 9 mit Handrad gelagert ist. Eine Schraube 10 dient zum Festhalten der Gewindebüchse 9 in jeder gewünschten Hublage. Das Verstellorgan 6 wird durch einen in einem Schlitz 11 des Kurbelarms 7 gleitenden Bolzen gezwungen, die Umdrehungen der Kurbelwelle 2 mitzumachen, so als ob es bei jeder Hublage mit der Kurbelwelle zusammen aus einem Stück bestehen würde. Die Kuppelstange 8 beschreibt während des Betriebes einen Kegelmantel und erst, wenn der Hub gleich Null geworden ist, dreht sie sich, gleich der Kurbelwellenachse, um sich selbst. Die Pleuelstange 3 ist im Kreuzkopf 4 ebenfalls auf einer Kugel ober fläche gelagert, um der schwingenden Pleuelbewegung und gleichzeitig der Winkelverstellung der Pleuelstange folgen zu können. An Stelle von kugelförmigen Gleitlagerflächen können erfindungsgemäß Pendelkugellager angeordnet werden. Die Pleuelstange 3₧wird im Kreuzkopf 4 noch durch Zapfen 12, die in entsprechenden Schlitzen des Kreuzkopfes geführt werden, am Drehen um ihre Achse gehindert, was andernfalls infolge der Lagerung auf Kugelflächen bzw. auf Pendelkugellagern eintreten kann.The stepless adjustment and holding of the adjusting element 6 in each position between zero and full stroke takes place by means of a coupling rod 8, the hinged on the one hand to the adjusting member 6, on the other hand with a ball joint in one Threaded bushing 9 is mounted with a handwheel. A screw 10 is used for holding the threaded bushing 9 in any desired stroke position. The adjusting member 6 is through forced a bolt sliding in a slot 11 of the crank arm 7 to rotate of the crankshaft 2, as if it were in every stroke position with the crankshaft would consist of one piece together. The coupling rod 8 describes during the Operation has a cone shell and only turns when the stroke has become zero they themselves, like the crankshaft axis, around themselves. The connecting rod 3 is in Cross head 4 also mounted on a ball upper surface to the vibrating Connecting rod movement and at the same time the angular adjustment of the connecting rod follow can. Instead of spherical plain bearing surfaces, self-aligning ball bearings can be used according to the invention to be ordered. The connecting rod 3 ₧ is still in the cross head 4 by pins 12, which are guided in corresponding slots in the cross head, on turning their axis is hindered, which would otherwise occur due to the bearing on spherical surfaces or can occur on self-aligning ball bearings.

Die Hubverstellung nach Abb. 4 bis 7 zeigt, daß ein als Kurbelschwinge ausgebildetes Verstellorgan 13 einerseits mittels Zapfens 14 in der Pleuelstange 3 gelagert ist, anderseits den Kurbelzapfen 15 der Kurbelwelle 2 mit seinem Schlitz 16 umfaßt. Beim Drehen der Kurbelwelle schwingt das Verstellorgan 13 um einen Bolzen 17 und erteilt bei der aus Abb. 4 ersichtlichen Stellung der Pleuelstange 3 den größten Hub. Der Bolzen 17, um den das Verstellorgan 13 schwingt, ist in einem im Kurbelgehäuse 1 drehbar gelagerten Gehäuse 18 fest angebracht, und sobald das Gehäuse 18 mittels einer z. B. an Arm 19 angreifenden Vorrichtung bekannter Art in Pfeilrichtung gedreht wird, verändert sich die Lage des Verstellorgans 13 so, daß der Pleuelstangenhub stufenlos verkleinert wird. Nach Drehung des Armes 19 und damit des Gehäuses 18 um einen Winkel von 90° schwingt das Verstellorgan 13 um die Horizontale, weil der Bolzen 17 ebenfalls in der Längsachse des Kurbeltriebes liegt, wie Abb. 6 zeigt. Der Pleuelstangenhub ist dann, abgesehen von der geringen Bogenhöhe der Schwingung, praktisch nahezu gleich Null.The stroke adjustment according to Fig. 4 to 7 shows that a crank arm trained adjusting member 13 on the one hand by means of pin 14 in the connecting rod 3 is mounted, on the other hand the crank pin 15 of the crankshaft 2 with its slot 16 includes. When the crankshaft rotates, the adjusting member 13 swings about a bolt 17 and issued in the position of the connecting rod 3 shown in Fig. 4 largest hub. The bolt 17 around which the adjusting member 13 swings is in an im Crankcase 1 rotatably mounted housing 18 firmly attached, and once the housing 18 by means of a z. B. on arm 19 attacking device of known type in the direction of the arrow is rotated, the position of the adjusting member 13 changes so that the connecting rod stroke is continuously reduced. After rotating the arm 19 and thus the housing 18 the adjusting member 13 swings about the horizontal at an angle of 90 ° because of the Bolt 17 is also located in the longitudinal axis of the crank mechanism, as Fig. 6 shows. The connecting rod stroke is then, apart from the low arc height of the oscillation, practically almost zero.

Claims (1)

PATENTANSPRÜCHE: 1. Hubverstellung an Kurbeltrieben, dadurch gekennzeichnet, daß die Hubverstellung durch ein einerseits im Pleuelstangenkopf kugelförmig und (oder) pendelartig angelenktes, andererseits von einem Kurbelzapfen (7, 15) einer einseitig fest gelagerten Kurbelwelle (2) betätigtes Verstellorgan (6, 13) erzeugt wird, dessen stufenlose Einstellung vom Maximalhub bis zum Nullhub durch Schwenken der Pleuelstange (3) mit dem im Pleuelstangenkopf angelenkten Verstellorgan (6) in Achsrichtung der Kurbelwelle (2) oder durch Schwenken des Verstellorgans (13) um die Achse der Kurbelwelle (2) erfolgt. 2. Hubverstellung nach Anspruch 1, dadurch gekennzeichnet, daß das Verstellorgan (6) mittels einer kugeligen Lagerfläche oder eines Pendelkugellagers im Pleuelstangenkopf gelagert ist und eine Kugelstange (8) zur Betätigung des Verstellorgans (6) in einer mit Gewinde versehenen Büchse (9) sowie die Pleuelstange (3) im Kreuzkopf (4) ebenfalls kugelige Lagerflächen aufweisen. 3. Hubverstellung nach Anspruch 1, dadurch gekennzeichnet, daß das pendelartige Verstellorgan (13) eine Kurbelschwinge ist, die mit einem Zapfen (14) im Pleuelstangenkopf gelagert wird, während sie mittels eines Schlitzes den Kurbelzapfen (15) umfaßt und wobei sie mit ihrem Drehpunkt (17) in einem Gehäuse (18) festgehalten wird, das, konzentrisch zur Kurbelwelle (2) im Kurbelgehäuse (1) angeordnet, bei einer Winkelverstellung um 90° eine gleichzeitige Lageänderung des Verstellorgans (13) und damit eine stufenlose Verstellung vom Maximalhub bis zum Nullhub hervorruft. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 332 781, 822 741; schweizerische Patentschrift Nr. 233 640; französische Patentschrift Nr. 1003 503; AWF-VDMA Getriebeblätter 633T-633B, Bild 2, 671 T-671 B, Bild 27 a, S. 14.PATENT CLAIMS: 1. Stroke adjustment on crank drives, characterized in that the stroke adjustment is actuated by an adjusting element (6, 13) which is articulated on the one hand in the connecting rod head in a spherical and (or) pendulum-like manner and, on the other hand, by a crank pin (7, 15) of a crankshaft (2) fixedly mounted on one side ), whose stepless adjustment from the maximum stroke to the zero stroke by pivoting the connecting rod (3) with the adjusting element (6) linked in the connecting rod head in the axial direction of the crankshaft (2) or by pivoting the adjusting element (13) around the axis of the crankshaft (2) ) he follows. 2. Stroke adjustment according to claim 1, characterized in that the adjusting element (6) is mounted in the connecting rod head by means of a spherical bearing surface or a self-aligning ball bearing and a ball rod (8) for actuating the adjusting element (6) in a threaded bushing (9) as well the connecting rod (3) in the cross head (4) also have spherical bearing surfaces. 3. Stroke adjustment according to claim 1, characterized in that the pendulum-like adjusting element (13) is a crank arm which is mounted with a pin (14) in the connecting rod head while it comprises the crank pin (15) by means of a slot and with its pivot point (17) is held in a housing (18) which, arranged concentrically to the crankshaft (2) in the crankcase (1), with an angular adjustment of 90 °, a simultaneous change in position of the adjusting element (13) and thus a stepless adjustment from the maximum stroke to the Causes zero stroke. Considered publications: German Patent Nos. 332 781, 822 741; Swiss Patent No. 233 640; French Patent No. 1 003 503; AWF-VDMA transmission sheets 633T-633B, Fig. 2, 671 T-671 B, Fig. 27 a, p. 14.
DEH14393A 1952-11-07 1952-11-07 Stroke adjustment on crank drives Pending DE1005801B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH14393A DE1005801B (en) 1952-11-07 1952-11-07 Stroke adjustment on crank drives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH14393A DE1005801B (en) 1952-11-07 1952-11-07 Stroke adjustment on crank drives

Publications (1)

Publication Number Publication Date
DE1005801B true DE1005801B (en) 1957-04-04

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Application Number Title Priority Date Filing Date
DEH14393A Pending DE1005801B (en) 1952-11-07 1952-11-07 Stroke adjustment on crank drives

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DE (1) DE1005801B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3073178A (en) * 1959-03-13 1963-01-15 Gen Motors Corp Adjustable eccentric drive devices
US3106105A (en) * 1960-07-08 1963-10-08 Wallace & Tiernan Inc Adjustable eccentric
US3188873A (en) * 1961-11-24 1965-06-15 North American Aviation Inc Adjustable oscillating means
DE1216640B (en) * 1959-03-07 1966-05-12 Verdichter Six-link gear with adjustable stroke, especially for metering pumps
DE1239538B (en) * 1960-05-03 1967-04-27 Verdichter Stroke adjustment device for metering pumps to regulate the delivery rate during operation with unchangeable pressure stroke end position
DE2446806A1 (en) * 1974-10-01 1976-04-08 Ott Kg Lewa LIFT-ADJUSTABLE PUMP DRIVE
FR2363697A1 (en) * 1976-09-01 1978-03-31 Kloeckner Humboldt Deutz Ag INTERNAL COMBUSTION ENGINE, ALTERNATIVE PISTON STROKE, MULTI-CYLINDER
DE2904392A1 (en) * 1979-02-06 1980-08-14 Bosch Gmbh Robert Crank drive for IC engine or compressor - has gudgeon pin formed on connecting rod with flat allowing insertion through slot in bearing
EP0510980A2 (en) * 1991-04-25 1992-10-28 E.I. Du Pont De Nemours And Company Automatic variable stroke crank assembly
DE4439325A1 (en) * 1994-11-04 1996-05-09 Gergen Herbert N Sliding, controlled crank for force and torque conversion
EP0795094A1 (en) * 1994-12-09 1997-09-17 Richter Technology Limited Rotary/linear converter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE332781C (en) * 1913-05-20 1921-02-08 Jules Naeder Fluid change gearbox
CH233640A (en) * 1943-04-28 1944-08-15 Strasser Erwin Crank mechanisms, in particular for fuel pumps.
DE822741C (en) * 1949-12-16 1951-11-29 Willy Mueller Internal combustion engine, in particular the design of the engine arranged between the piston and the motor shaft
FR1003503A (en) * 1947-01-14 1952-03-19 Reversible device for transforming rotary movement into reciprocating movements

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE332781C (en) * 1913-05-20 1921-02-08 Jules Naeder Fluid change gearbox
CH233640A (en) * 1943-04-28 1944-08-15 Strasser Erwin Crank mechanisms, in particular for fuel pumps.
FR1003503A (en) * 1947-01-14 1952-03-19 Reversible device for transforming rotary movement into reciprocating movements
DE822741C (en) * 1949-12-16 1951-11-29 Willy Mueller Internal combustion engine, in particular the design of the engine arranged between the piston and the motor shaft

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1216640B (en) * 1959-03-07 1966-05-12 Verdichter Six-link gear with adjustable stroke, especially for metering pumps
US3073178A (en) * 1959-03-13 1963-01-15 Gen Motors Corp Adjustable eccentric drive devices
DE1239538B (en) * 1960-05-03 1967-04-27 Verdichter Stroke adjustment device for metering pumps to regulate the delivery rate during operation with unchangeable pressure stroke end position
US3106105A (en) * 1960-07-08 1963-10-08 Wallace & Tiernan Inc Adjustable eccentric
US3188873A (en) * 1961-11-24 1965-06-15 North American Aviation Inc Adjustable oscillating means
DE2446806A1 (en) * 1974-10-01 1976-04-08 Ott Kg Lewa LIFT-ADJUSTABLE PUMP DRIVE
FR2363697A1 (en) * 1976-09-01 1978-03-31 Kloeckner Humboldt Deutz Ag INTERNAL COMBUSTION ENGINE, ALTERNATIVE PISTON STROKE, MULTI-CYLINDER
DE2904392A1 (en) * 1979-02-06 1980-08-14 Bosch Gmbh Robert Crank drive for IC engine or compressor - has gudgeon pin formed on connecting rod with flat allowing insertion through slot in bearing
EP0510980A2 (en) * 1991-04-25 1992-10-28 E.I. Du Pont De Nemours And Company Automatic variable stroke crank assembly
EP0510980A3 (en) * 1991-04-25 1993-03-31 E.I. Du Pont De Nemours And Company Automatic variable stroke crank assembly
DE4439325A1 (en) * 1994-11-04 1996-05-09 Gergen Herbert N Sliding, controlled crank for force and torque conversion
DE4439325B4 (en) * 1994-11-04 2006-06-29 Gergen, Herbert N. Crankshaft with periodically changing Kröpfungsradius the at least one connecting rod journal
EP0795094A1 (en) * 1994-12-09 1997-09-17 Richter Technology Limited Rotary/linear converter
EP0795094A4 (en) * 1994-12-09 1998-10-14 Richter Technology Ltd Rotary/linear converter
US5924394A (en) * 1994-12-09 1999-07-20 Richter Technology Limited Rotary/linear converter

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