EP0388586A1 - Pressure-fluid actuator - Google Patents
Pressure-fluid actuator Download PDFInfo
- Publication number
- EP0388586A1 EP0388586A1 EP90101128A EP90101128A EP0388586A1 EP 0388586 A1 EP0388586 A1 EP 0388586A1 EP 90101128 A EP90101128 A EP 90101128A EP 90101128 A EP90101128 A EP 90101128A EP 0388586 A1 EP0388586 A1 EP 0388586A1
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- EP
- European Patent Office
- Prior art keywords
- carrier
- housing
- pressure
- spring
- 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
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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
- F15B15/084—Characterised by the construction of the motor unit the motor being of the rodless piston type, e.g. with cable, belt or chain
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18992—Reciprocating to reciprocating
Definitions
- the invention relates to a pressure-actuated working cylinder with a driver driven by a piston via a flexible tension element according to the preamble of claim 1.
- Such a cylinder is known from DE-OS 28 30 058.
- This known working cylinder has guide plates attached to the cylinder housing, each for a deflection device having a deflection element for the tension element.
- the deflecting elements are designed as deflecting rollers, the deflecting rollers being arranged in the region of the ends of the cylinder housing.
- Each deflection roller is arranged on an axis that runs transversely to the longitudinal axis of the cylinder housing and serves as a support for the deflection roller, which is slidably mounted in a slot-shaped recess of this guide plate that runs parallel to the longitudinal axis of the guide plate in the longitudinal direction of the slot-shaped recess.
- Spring-loaded means are provided, which are supported on the guide plate and load the axis in the direction away from the cylinder, so that the tension element is always kept under tension.
- the invention has for its object to provide a pressure-actuated working cylinder of the type mentioned, which is compact in its construction and in which a safe guidance of the deflection device and thus the tension element is guaranteed.
- the invention offers in particular the advantage of being able to form the working cylinder in a space-saving manner by the arrangement of supports for the deflecting elements which are slidably guided in a further housing bore additionally provided in the cylinder housing.
- each carrier is at least partially designed as a tubular body, into which a spring that acts on the carrier from the cylinder housing extends. This measure considerably reduces the space required for a spring with a large axial extension.
- an anti-rotation device for the carrier and thus also for the deflection roller is achieved without an additional anti-rotation device having to be provided for this purpose.
- This anti-rotation device ensures that the tension element is guided securely by means of the deflection element.
- an anti-rotation device can be achieved by providing a groove running in the longitudinal direction of the housing bore in the wall defining the housing bore, into which a projection provided on the carrier engages.
- a common housing bore can be provided for both supports, which is divided into two coaxial housing bore parts by an insert.
- a pressure-actuated working cylinder is shown with a driver driven by a piston via a bendable tension element.
- the working cylinder has a profile tube serving as a cylinder housing (1), with a tube in the longitudinal direction axis of the cylinder housing (1) extending first housing bore (34).
- the first housing bore (34) can have a circular cross section, but also a cross section that deviates from the circular shape, for example an oval cross section.
- a piston (31) is arranged so as to be displaceable and sealed by means of sealing rings (30) and (32).
- the cross-sectional shape of the piston (31) naturally corresponds to the cross-sectional shape of the first housing bore (34).
- the first housing bore (34) is closed at both ends by a first cover (2) and a second cover (27).
- the piston (31) divides the cylinder space into a first working chamber (33) and a second working chamber (29).
- the first working chamber (33) is connected via a pressure medium connection (35) and the second working chamber (29) is connected via a second pressure medium connection (28) to a valve device, not shown, via which the two working chambers (33) and (29) optionally with one Pressure medium source or with the atmosphere or with a return line.
- first cover (2) there is a passage with a sealing element (3) and in the second cover (27) there is another passage with a sealing element (26) through which a pulling element (25) connected to the piston (31) seals the front of the cylinder is led out.
- a first guide (12) is provided in or on the cylinder housing (1) for a driver (14) guided in the longitudinal direction of the cylinder housing (1).
- the cylinder housing (1) has a further guide, which is formed in each case by a further housing bore (13) or (16) of the cylinder housing (1), which runs in the direction of the longitudinal axis of the cylinder housing (1).
- the two other housing bores (13, 16) have a rectangular cross section.
- the two further housing bores (13) and (16) are formed by a bore penetrating the cylinder housing (1) in the longitudinal direction, which is divided into the two housing bores (13) and (16) by an insert (15) arranged in this bore is.
- One housing bore (13) is referred to below as the first bore section (13) and the other housing bore (16) is referred to below as the second bore section (16).
- the further guide is arranged in the area between the first housing bore (34) and the first guide (12) provided in or on the cylinder housing (1) for the driver (14), which is also connected to the tension element (25).
- the longitudinal axis of the first housing bore (34), the longitudinal axis of the further guide (13, 16) and the longitudinal axis of the first guide (12) for the driver (14) run parallel to one another and parallel to the longitudinal axis of the cylinder housing (1).
- a first support (11, 7) for a first roller (8) serving as a deflecting element for the tension element (25) is arranged in the first bore section (13) of the further guide so as to be displaceable in the direction of the longitudinal axis of the second housing bore (13, 16).
- a second support (17, 21) for a Deflection element for the tension element (25) serving second roller (22) slidably arranged in the direction of the longitudinal axis of the second housing bore (13, 16).
- the first carrier (11, 7) and the second carrier (17, 21) also have a rectangular cross section.
- Each support (11, 7) or (17, 21) with associated deflection element (roller 8 and roller 22) forms a deflection device (11, 7, 8) or (17, 21, 22).
- the two supports (11, 7) and (17, 21) are designed as tubular bodies (11) and (17) and each have a fork-shaped part on their end region protruding from the associated bore section (13) or (16) (7) or (21).
- the fork-shaped part (7) of the first carrier (11, 7) has an axis (9) running transversely to the longitudinal axis of the first carrier (11, 7), on which the first roller (8) is rotatably mounted.
- the fork-shaped part (21) of the second carrier (17, 21) also has an axis (23) which runs transversely to the longitudinal axis of the second carrier (17, 21) and on which the second roller (22) is rotatably mounted.
- a first spring (4) is arranged in the tubular body (11) of the first carrier (11, 7), the axial extent of which is greater than the axial extent of the tubular body (11) of the first carrier (11, 7).
- the first spring (4) is supported at one end on the insert (15) in the further housing bore (13, 16) and acts on the other end against a wall (6) delimiting the tubular body, to which the fork-shaped part ( 7) of the first carrier (11, 7).
- a second spring (18) is arranged in the tubular body (17) of the second carrier (17, 21), the axial extension of which is greater than the axial extension of the tubular body (17) of the second carrier (17, 21).
- the second spring (18) is supported with one end on the insert (15) in the further housing bore (13, 16) and acts with its other end on a wall (20) delimiting the tubular body, to which the fork-shaped part ( 21) of the second carrier (17, 21).
- the force of the first spring (4) loads the first carrier (11, 7) carrying the first roller (8) in the direction of the longitudinal axis of the cylinder housing (1) in the direction away from the cylinder housing (1).
- the force of the second spring (18) loads the second carrier (17, 21) carrying the second roller (22) in the direction of the longitudinal axis of the cylinder housing (1) in the direction away from the cylinder housing (1).
- the first carrier (11, 7) has a stop (5) on its outer lateral surface, which stops when the first carrier (11, 7) moves in the direction of the cylinder housing (1) can be brought into abutment on the associated end face of the cylinder housing (1), thus limiting the stroke of the first carrier (11, 7) in the direction of the cylinder housing (1).
- the second carrier has a stop (19) on its outer lateral surface outside the further housing bore (13, 16), which stops when the second carrier (17, 21) moves in the direction of the cylinder housing (1) on the associated end face of the cylinder housing (1) can be brought into contact and thus limits the stroke of the second carrier (17, 21) in the direction of the cylinder housing (1).
- a first cap-like cover (10) and a second cap-like cover (24) are attached, which enclose the supports provided with the rollers (8) and (22) together with the cylinder housing (1) and so protect these components from contamination.
- the traction element (25) partially wrapping around the rollers (8) or (22) and the stops (5) or (19) on the supports (11, 7) and (17, 21) limit the stroke of the rollers (8 ) or (22) supporting beams (11, 7) or (17, 21) in the direction away from the cylinder housing (1) or in the direction of the cylinder housing (1).
- FIG. 2 shows the cylinder housing (1) with the first housing bore (34) with piston (31), the first bore section (13) with the tubular body (11) of the first carrier (11, 7) and the driver (14) shown in section along the line AA according to Fig.1. From this figure it can be clearly seen that the first housing bore (34), the further housing bores (13, 16) serving as a further guide and the driver (14) are arranged one above the other on a common vertical axis.
- the further housing bores (13, 16) can be designed as a single through-bore which has an insert (15) serving as a support for both springs (4) and (18) or also two inserts, each insert then having a spring (4th ) or (18) is assigned. It is of course also conceivable to omit the insert (15) so that the two further housing bores (13) and (16) together form a housing bore and thus only a single spring is to be provided, which is arranged such that its ends face away from each other the mutually facing sides of the two carriers (11, 7) and (17, 21) from the end faces of the cylinder housing (1) away.
- two individual bores designed in the manner of a blind bore can also be provided for the supports.
- an insert can be dispensed with, since the bottom of each blind bore would serve as spring support for the associated spring (4) or (18).
- the bore or the bores can have a circular cross section, but also any cross section deviating from the circular shape. If a cross section is chosen that deviates from the circular shape, an additional anti-rotation lock for the supports (11, 7) and (17, 21) is unnecessary.
- the further housing bore (13, 16) or the Further housing bores for the supports (11, 7) and (17, 21) can also be arranged in the cylinder housing (1) in a slightly oblique manner with respect to the longitudinal axis of the cylinder housing (1).
- each carrier that carries the roller can be configured cranked.
- Each support carrying a role can at least partially consist of a tubular body which can serve to receive the associated tension spring for supports with a role.
- the carrier can also consist of solid material, so that the spring acts on the end face of the carrier facing the further housing bore.
- each carrier is designed so that it is securely guided in the associated further housing bore.
- the carrier is designed such that it is adapted to the cross-sectional shape of the further housing bore.
- Additional stops (5) and (19) to be arranged on the carriers (11, 7) and (17, 21) can be dispensed with if the length of the carriers (11, 7) or (17, 21) is dimensioned in this way that the supports (11, 7) or (17, 21) come into contact with their end faces in the further housing bores (13, 16) on the insert (15) or on the inserts or on the bottom of the blind bores, if the carrier or carriers (11, 7) or (17, 21) have a predeterminable stroke in the direction of the cylinder housing (1).
- Each spring (4) or (18) itself can also serve as a stop if it is in a fully compressed state (turn to turn) or if the spring is designed to be very strong.
- the force acting on the tension element (25) pushes the first carrier (11, 7) into the further housing bore (13, 16) against the force of the spring (4), namely until the stop (5) of the first carrier (11, 7) comes to rest on the associated end face of the cylinder housing (1).
- the force of the second spring (18) acting on the second carrier (17, 21) displaces the second carrier (17, 21) away from the associated end face of the cylinder housing (1), the stop (19) moving away from this end face of the cylinder housing (1) triggers.
- the tension element (25) is held tensioned in the area between the driver (14), the second roller (22) and the piston (31) via the second roller (22) connected to the second carrier (17, 21).
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Description
Die Erfindung betrifft einen druckmittelbetätigbaren Arbeitszylinder mit einem von einem Kolben über ein biegbares Zugelement angetriebenen Mitnehmer gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a pressure-actuated working cylinder with a driver driven by a piston via a flexible tension element according to the preamble of
Ein derartiger Arbeitszylinder ist aus der DE-OS 28 30 058 bekannt.
Dieser bekannte Arbeitszylinder weist am Zylindergehäuse befestigte Führungsbleche für je eine ein als Umlenkelement für das Zugelement aufweisende Umlenkeinrichtung auf. Die Umlenkelemente sind als Umlenkrollen ausgebildet, wobei die Umlenkrollen im Bereich der Enden des Zylindergehäuses angeordnet sind. Jede Umlenkrolle ist auf einer quer zur Längsachse des Zylindergehäuses verlaufend gelagerten und als Träger für die Umlenkrolle dienenden Achse angeordnet, die in einer parallel zur Längsachse des Führungsbleches verlaufenden schlitzförmigen Ausnehmung dieses Führungsbleches in Längsrichtung der schlitzförmigen Ausnehmung verschiebbar gelagert ist.
Es sind federbelastete Mittel vorgesehen, die sich am Führungsblech abstützen und die Achse in Richtung vom Zylinder weg belasten, so daß das Zugelement stets gespannt gehalten wird.Such a cylinder is known from DE-OS 28 30 058.
This known working cylinder has guide plates attached to the cylinder housing, each for a deflection device having a deflection element for the tension element. The deflecting elements are designed as deflecting rollers, the deflecting rollers being arranged in the region of the ends of the cylinder housing. Each deflection roller is arranged on an axis that runs transversely to the longitudinal axis of the cylinder housing and serves as a support for the deflection roller, which is slidably mounted in a slot-shaped recess of this guide plate that runs parallel to the longitudinal axis of the guide plate in the longitudinal direction of the slot-shaped recess.
Spring-loaded means are provided, which are supported on the guide plate and load the axis in the direction away from the cylinder, so that the tension element is always kept under tension.
Von Nachteil ist bei diesem Arbeitszylinder, daß bedingt durch die besondere Anordnung der Umlenkrollen am Arbeitszylinder dieser sehr sperrig in seinem Aufbau ist und für den Einbau eines solchen Arbeitszylinders relativ viel Raum benötigt wird.The disadvantage of this working cylinder is that due to the special arrangement of the deflection rollers on the working cylinder, this is very bulky in its construction and a relatively large amount of space is required for the installation of such a working cylinder.
Der Erfindung liegt die Aufgabe zugrunde, einen druckmittelbetätigbaren Arbeitszylinder der eingangs erwähnten Art zu schaffen, der kompakt in seinem Aufbau ist und bei welchem eine sichere Führung der Umlenkeinrichtung und damit des Zugelementes gewährleistet ist.The invention has for its object to provide a pressure-actuated working cylinder of the type mentioned, which is compact in its construction and in which a safe guidance of the deflection device and thus the tension element is guaranteed.
Diese Aufgabe wird mit der im Patentanspruch 1 angegebenen Erfindung gelöst. Weiterbildungen und vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved with the invention specified in
Die Erfindung bietet insbesondere den Vorteil, durch die Anordnung von verschiebbar in einer zusätzlich im Zylindergehäuse vorgesehenen weiteren Gehäusebohrung geführten Trägern für die Umlenkelemente den Arbeitszylinder raumsparend ausbilden zu können.The invention offers in particular the advantage of being able to form the working cylinder in a space-saving manner by the arrangement of supports for the deflecting elements which are slidably guided in a further housing bore additionally provided in the cylinder housing.
Gemäß einer vorteilhaften Weiterbildung des Erfindungsgegenstandes ist jeder Träger wenigstens teilweise als ein rohrförmiger Körper ausgebildet, in welchen sich eine den Träger vom Zylindergehäuse weg beaufschlagende Feder hineinerstreckt. Durch diese Maßnahme wird der Platzbedarf für eine in ihrer axialen Erstreckung große Feder erheblich verringert.According to an advantageous development of the subject matter of the invention, each carrier is at least partially designed as a tubular body, into which a spring that acts on the carrier from the cylinder housing extends. This measure considerably reduces the space required for a spring with a large axial extension.
Weisen die weitere Gehäusebohrung und der Träger einen von der Kreisform abweichenden Querschnitt, z.B. einen rechteckigen Querschnitt, auf, so wird eine Verdrehsicherung für den Träger und somit auch für die Umlenkrolle erreicht, ohne daß zu diesem Zweck eine zusätzliche Verdrehsicherung vorgesehen werden muß. Es wird durch diese Verdrehsicherung eine sichere Führung des Zugelementes mittels des Umlenkelementes gewährleistet.If the further housing bore and the carrier have a cross-section deviating from the circular shape, for example a rectangular cross-section, an anti-rotation device for the carrier and thus also for the deflection roller is achieved without an additional anti-rotation device having to be provided for this purpose. This anti-rotation device ensures that the tension element is guided securely by means of the deflection element.
Weisen die zusätzliche Gehäusebohrung und die Träger für die Umlenkrollen einen kreisförmigen Querschnitt auf, so kann eine Verdrehsicherung dadurch erreicht werden, daß in der die Gehäusebohrung begrenzenden Wand eine in Längsrichtung der Gehäusebohrung verlaufende Nut vorgesehen wird, in die ein am Träger vorgesehener Vorsprung eingreift.If the additional housing bore and the carrier for the deflecting rollers have a circular cross-section, an anti-rotation device can be achieved by providing a groove running in the longitudinal direction of the housing bore in the wall defining the housing bore, into which a projection provided on the carrier engages.
Es kann für beide Träger eine gemeinsame Gehäusebohrung vorgesehen werden, die durch einen Einsatz in zwei gleichachsige Gehäusebohrungsteile unterteilt ist.A common housing bore can be provided for both supports, which is divided into two coaxial housing bore parts by an insert.
Anhand der Zeichnung wird nachfolgend ein Ausführungsbeispiel der Erfindung näher erläutert.An exemplary embodiment of the invention is explained in more detail below with the aid of the drawing.
Es zeigen:
- Fig.1 einen druckmittelbetätigbaren Arbeitszylinder mit zwei in einer Gehäusebohrung des Arbeitszylinders verschiebbar angeordneten, federbelasteten Trägern für die Umlenkrollen eines Zugelementes, mittels welchem ein Kolben mit einem Mitnehmer verbunden ist und
- Fig.2 einen Schnitt durch den Arbeitszylinder gemäß Fig.1 nach der Linie A-A.
- 1 shows a pressure-actuated working cylinder with two spring-loaded supports for the deflecting rollers of a tension element, which are displaceably arranged in a housing bore of the working cylinder, by means of which a piston is connected to a driver and
- 2 shows a section through the working cylinder according to Figure 1 along the line AA.
In Fig.1 ist ein druckmittelbetätigbarer Arbeitszylinder mit einem von einem Kolben über ein biegbares Zugelement angetriebenen Mitnehmer dargestellt.In Figure 1, a pressure-actuated working cylinder is shown with a driver driven by a piston via a bendable tension element.
Der Arbeitszylinder weist ein als Zylindergehäuse (1) dienendes Profilrohr mit einer in Richtung der Längs achse des Zylindergehäuses (1) verlaufenden ersten Gehäusebohrung (34) auf. Die erste Gehäusebohrung (34) kann einen kreisrunden Querschnitt, aber auch einen von der Kreisform abweichenden, z.B. einen ovalen Querschnitt haben. In der ersten Gehäusebohrung (34) ist ein Kolben (31) mittels Dichtringen (30) und (32) abgedichtet verschiebbar angeordnet. Die Querschnittsform des Kolbens (31) entspricht selbstverständlich der Querschnittsform der ersten Gehäusebohrung (34). Die erste Gehäusebohrung (34) ist an ihren beiden Enden von einem ersten Deckel (2) und einem zweiten Deckel (27) verschlossen.The working cylinder has a profile tube serving as a cylinder housing (1), with a tube in the longitudinal direction axis of the cylinder housing (1) extending first housing bore (34). The first housing bore (34) can have a circular cross section, but also a cross section that deviates from the circular shape, for example an oval cross section. In the first housing bore (34), a piston (31) is arranged so as to be displaceable and sealed by means of sealing rings (30) and (32). The cross-sectional shape of the piston (31) naturally corresponds to the cross-sectional shape of the first housing bore (34). The first housing bore (34) is closed at both ends by a first cover (2) and a second cover (27).
Der Kolben (31) unterteilt den Zylinderraum in eine erste Arbeitskammer (33) und in eine zweite Arbeitskammer (29). Die erste Arbeitskammer (33) ist über einen Druckmittelanschluß (35) und die zweite Arbeitskammer (29) ist über einen zweiten Druckmittelanschluß (28) mit einer nicht dargestellten Ventileinrichtung verbunden, über welche die beiden Arbeitskammern (33) und (29) wahlweise mit einer Druckmittelquelle oder mit der Atmosphäre bzw. mit einem Rücklauf verbindbar sind.The piston (31) divides the cylinder space into a first working chamber (33) and a second working chamber (29). The first working chamber (33) is connected via a pressure medium connection (35) and the second working chamber (29) is connected via a second pressure medium connection (28) to a valve device, not shown, via which the two working chambers (33) and (29) optionally with one Pressure medium source or with the atmosphere or with a return line.
Im ersten Deckel (2) ist ein ein Dichtelement (3) aufweisender Durchlaß und im zweiten Deckel (27) ist ein weiterer ein Dichtelement (26) aufweisender Durchlaß vorgesehen, durch welche ein mit dem Kolben (31) verbundenes Zugelement (25) abgedichtet aus den Stirnseiten des Zylinders herausgeführt ist.In the first cover (2) there is a passage with a sealing element (3) and in the second cover (27) there is another passage with a sealing element (26) through which a pulling element (25) connected to the piston (31) seals the front of the cylinder is led out.
Im bzw. am Zylindergehäuse (1) ist eine erste Führung (12) für einen in Längsrichtung des Zylindergehäuses (1) geführten Mitnehmer (14) vorgesehen.A first guide (12) is provided in or on the cylinder housing (1) for a driver (14) guided in the longitudinal direction of the cylinder housing (1).
Das Zylindergehäuse (1) weist eine weitere Führung auf, die jeweils von einer weiteren Gehäusebohrung (13) bzw. (16) des Zylindergehäuses (1) gebildet wird, die in Richtung der Längsachse des Zylindergehäuses (1) verläuft. Die beiden weiteren Gehäusebohrungen (13, 16) weisen einen rechteckigen Querschnitt auf. Die beiden weiteren Gehäusebohrungen (13) bzw. (16) werden von einer das Zylindergehäuse (1) in Längsrichtung durchdringenden Bohrung gebildet, die durch einen in dieser Bohrung angeordneten Einsatz (15) in die zwei Gehäusebohrungen (13) bzw. (16) unterteilt ist. Die eine Gehäusebohrung (13) wird nachfolgend als erster Bohrungsabschnitt (13) und die andere Gehäusebohrung (16) wird nachfolgend als zweiter Bohrungsabschnitt (16) bezeichnet.
Die weitere Führung ist im Bereich zwischen der ersten Gehäusebohrung (34) und der im bzw. am Zylindergehäuse (1) vorgesehenen ersten Führung (12) für den Mitnehmer (14) angeordnet, der ebenfalls mit dem Zugelement (25) verbunden ist.The cylinder housing (1) has a further guide, which is formed in each case by a further housing bore (13) or (16) of the cylinder housing (1), which runs in the direction of the longitudinal axis of the cylinder housing (1). The two other housing bores (13, 16) have a rectangular cross section. The two further housing bores (13) and (16) are formed by a bore penetrating the cylinder housing (1) in the longitudinal direction, which is divided into the two housing bores (13) and (16) by an insert (15) arranged in this bore is. One housing bore (13) is referred to below as the first bore section (13) and the other housing bore (16) is referred to below as the second bore section (16).
The further guide is arranged in the area between the first housing bore (34) and the first guide (12) provided in or on the cylinder housing (1) for the driver (14), which is also connected to the tension element (25).
Die Längsachse der ersten Gehäusebohrung (34), die Längsachse der weiteren Führung (13, 16) und die Längsachse der ersten Führung (12) für den Mitnehmer (14) verlaufen parallel zueinander und parallel zur Längsachse des Zylindergehäuses (1).The longitudinal axis of the first housing bore (34), the longitudinal axis of the further guide (13, 16) and the longitudinal axis of the first guide (12) for the driver (14) run parallel to one another and parallel to the longitudinal axis of the cylinder housing (1).
Im ersten Bohrungsabschnitt (13) der weiteren Führung ist ein erster Träger (11, 7) für eine als Umlenkelement für das Zugelement (25) dienende erste Rolle (8) in Richtung der Längsachse der zweiten Gehäusebohrung (13, 16) verschiebbar angeordnet. In gleicher Weise ist im zweiten Bohrungsabschnitt (16) der weiteren Führung ein zweiter Träger (17, 21) für eine als Umlenkelement für das Zugelement (25) dienende zweite Rolle (22) in Richtung der Längsachse der zweiten Gehäusebohrung (13, 16) verschiebbar angeordnet. Der erste Träger (11, 7) und der zweite Träger (17, 21) weisen ebenfalls einen rechteckigen Querschnitt auf. Jeder Träger (11, 7) bzw. (17, 21) mit zugehörigem Umlenkelement (Rolle 8 und Rolle 22) bildet je eine Umlenkeinrichtung (11, 7, 8) bzw. (17, 21, 22).A first support (11, 7) for a first roller (8) serving as a deflecting element for the tension element (25) is arranged in the first bore section (13) of the further guide so as to be displaceable in the direction of the longitudinal axis of the second housing bore (13, 16). In the same way, in the second bore section (16) of the further guide there is a second support (17, 21) for a Deflection element for the tension element (25) serving second roller (22) slidably arranged in the direction of the longitudinal axis of the second housing bore (13, 16). The first carrier (11, 7) and the second carrier (17, 21) also have a rectangular cross section. Each support (11, 7) or (17, 21) with associated deflection element (
Die beiden Träger (11, 7) und (17, 21) sind als rohrförmige Körper (11) bzw. (17) ausgebildet und weisen an ihrem aus dem zugehörigen Bohrungsabschnitt (13) bzw. (16) herausragenden Endbereich je einen gabelförmig ausgebildeten Teil (7) bzw. (21) auf.The two supports (11, 7) and (17, 21) are designed as tubular bodies (11) and (17) and each have a fork-shaped part on their end region protruding from the associated bore section (13) or (16) (7) or (21).
Der gabelförmige Teil (7) des ersten Trägers (11, 7) besitzt eine quer zur Längsachse des ersten Trägers (11, 7) verlaufende Achse (9), auf welcher die erste Rolle (8) drehbar gelagert ist. Der gabelförmige Teil (21) des zweiten Trägers (17, 21) besitzt ebenfalls eine quer zur Längsachse des zweiten Trägers (17, 21) verlaufende Achse (23), auf der die zweite Rolle (22) drehbar gelagert ist.The fork-shaped part (7) of the first carrier (11, 7) has an axis (9) running transversely to the longitudinal axis of the first carrier (11, 7), on which the first roller (8) is rotatably mounted. The fork-shaped part (21) of the second carrier (17, 21) also has an axis (23) which runs transversely to the longitudinal axis of the second carrier (17, 21) and on which the second roller (22) is rotatably mounted.
Im rohrförmigen Körper (11) des ersten Trägers (11, 7) ist eine erste Feder (4) angeordnet, deren axiale Erstreckung größer ist als die axiale Erstreckung des rohrförmigen Körpers (11) des ersten Trägers (11, 7). Die erste Feder (4) stützt sich mit ihrem einen Ende an dem Einsatz (15) in der weiteren Gehäusebohrung (13, 16) ab und beaufschlagt mit ihrem anderen Ende eine den rohrförmigen Körper begrenzende Wand (6), an die das gabelförmige Teil (7) des ersten Trägers (11, 7) anschließt.A first spring (4) is arranged in the tubular body (11) of the first carrier (11, 7), the axial extent of which is greater than the axial extent of the tubular body (11) of the first carrier (11, 7). The first spring (4) is supported at one end on the insert (15) in the further housing bore (13, 16) and acts on the other end against a wall (6) delimiting the tubular body, to which the fork-shaped part ( 7) of the first carrier (11, 7).
Im rohrförmigen Körper (17) des zweiten Trägers (17, 21) ist eine zweite Feder (18) angeordnet, deren axiale Erstreckung größer ist als die axiale Erstreckung des rohrförmigen Körpers (17) des zweiten Trägers (17, 21).
Die zweite Feder (18) stützt sich mit ihrem einen Ende an dem Einsatz (15) in der weiteren Gehäusebohrung (13, 16) ab und beaufschlagt mit ihrem anderen Ende eine den rohrförmigen Körper begrenzende Wand (20), an die das gabelförmige Teil (21) des zweiten Trägers (17, 21) anschließt.A second spring (18) is arranged in the tubular body (17) of the second carrier (17, 21), the axial extension of which is greater than the axial extension of the tubular body (17) of the second carrier (17, 21).
The second spring (18) is supported with one end on the insert (15) in the further housing bore (13, 16) and acts with its other end on a wall (20) delimiting the tubular body, to which the fork-shaped part ( 21) of the second carrier (17, 21).
Mittels der Kraft der ersten Feder (4) wird der die erste Rolle (8) tragende erste Träger (11, 7) in Richtung der Längsachse des Zylindergehäuses (1) in Richtung vom Zylindergehäuse (1) weg belastet. Mittels der Kraft der zweiten Feder (18) wird der die zweite Rolle (22) tragende zweite Träger (17, 21) in Richtung der Längsachse des Zylindergehäuses (1) in Richtung vom Zylindergehäuse (1) weg belastet.The force of the first spring (4) loads the first carrier (11, 7) carrying the first roller (8) in the direction of the longitudinal axis of the cylinder housing (1) in the direction away from the cylinder housing (1). The force of the second spring (18) loads the second carrier (17, 21) carrying the second roller (22) in the direction of the longitudinal axis of the cylinder housing (1) in the direction away from the cylinder housing (1).
Durch die Beaufschlagung der beiden Umlenkeinrichtungen (11, 7, 8) und (17, 21, 22) mit den Federkräften wird das den Kolben (31) mit dem Mitnehmer (14) verbindende und über die beiden Rollen (8) und (22) geführte Zugelement (25) ständig gespannt gehalten.By acting on the two deflection devices (11, 7, 8) and (17, 21, 22) with the spring forces, the piston (31) with the driver (14) is connected and via the two rollers (8) and (22) guided tension element (25) kept constantly under tension.
Der erste Träger (11, 7) weist außerhalb der weiteren Gehäusebohrung (13, 16) auf seiner äußeren Mantelfläche einen Anschlag (5) auf, der bei einer Bewegung des ersten Trägers (11, 7) in Richtung auf das Zylindergehäuse (1) zu an der zugeordneten Stirnseite des Zylindergehäuses (1) zur Anlage bringbar ist und so den Hub des ersten Trägers (11, 7) in Richtung auf das Zylindergehäuse (1) zu begrenzt.Outside of the further housing bore (13, 16), the first carrier (11, 7) has a stop (5) on its outer lateral surface, which stops when the first carrier (11, 7) moves in the direction of the cylinder housing (1) can be brought into abutment on the associated end face of the cylinder housing (1), thus limiting the stroke of the first carrier (11, 7) in the direction of the cylinder housing (1).
Ebenso weist der zweite Träger außerhalb der weiteren Gehäusebohrung (13, 16) auf seiner äußeren Mantelfläche einen Anschlag (19) auf, der bei einer Bewegung des zweiten Trägers (17, 21) in Richtung auf das Zylindergehäuse (1) zu an der zugeordneten Stirnseite des Zylindergehäuses (1) zur Anlage bringbar ist und so den Hub des zweiten Trägers (17, 21) in Richtung auf das Zylindergehäuse (1) zu begrenzt.Likewise, the second carrier has a stop (19) on its outer lateral surface outside the further housing bore (13, 16), which stops when the second carrier (17, 21) moves in the direction of the cylinder housing (1) on the associated end face of the cylinder housing (1) can be brought into contact and thus limits the stroke of the second carrier (17, 21) in the direction of the cylinder housing (1).
An die beiden Enden des Zylindergehäuses (1) sind ein erster kappenartiger Deckel (10) und ein zweiter kappenartiger Deckel (24) angesetzt, die die mit den Rollen (8) und (22) versehenen Träger zusammen mit dem Zylindergehäuse (1) einschließen und so diese Bauteile vor Verschmutzung schützen.At the two ends of the cylinder housing (1), a first cap-like cover (10) and a second cap-like cover (24) are attached, which enclose the supports provided with the rollers (8) and (22) together with the cylinder housing (1) and so protect these components from contamination.
Das die Rollen (8) bzw. (22) teilweise umschlingende Zugelement (25) und die Anschläge (5) bzw. (19) an den Trägern (11, 7) und (17, 21) begrenzen den Hub der die Rollen (8) bzw. (22) tragenden Träger (11, 7) bzw. (17, 21) in Richtung vom Zylindergehäuse (1) weg bzw. in Richtung auf das Zylindergehäuse (1) zu.The traction element (25) partially wrapping around the rollers (8) or (22) and the stops (5) or (19) on the supports (11, 7) and (17, 21) limit the stroke of the rollers (8 ) or (22) supporting beams (11, 7) or (17, 21) in the direction away from the cylinder housing (1) or in the direction of the cylinder housing (1).
In Fig.2 sind das Zylindergehäuse (1) mit der ersten Gehäusebohrung (34) mit Kolben (31), dem ersten Bohrungsabschnitt (13) mit dem rohrförmigen Körper (11) des ersten Trägers (11, 7) und der Mitnehmer (14) im Schnitt nach der Linie A-A gemäß Fig.1 dargestellt. Aus dieser Figur ist deutlich zu erkennen, daß die erste Gehäusebohrung (34), die als weitere Führung dienenden weiteren Gehäusebohrungen (13, 16) und der Mitnehmer (14) übereinander auf einer gemeinsamen Hochachse liegend angeordnet sind.2 shows the cylinder housing (1) with the first housing bore (34) with piston (31), the first bore section (13) with the tubular body (11) of the first carrier (11, 7) and the driver (14) shown in section along the line AA according to Fig.1. From this figure it can be clearly seen that the first housing bore (34), the further housing bores (13, 16) serving as a further guide and the driver (14) are arranged one above the other on a common vertical axis.
Die weiteren Gehäusebohrungen (13, 16) können als eine einzige Durchgangsbohrung ausgebildet sein, die einen als Abstützung für beide Federn (4) und (18) dienenden Einsatz (15) oder auch zwei Einsätze aufweist, wobei dann jeder Einsatz je einer Feder (4) bzw. (18) zugeordnet ist.
Denkbar ist es natürlich auch, den Einsatz (15) wegzulassen so daß die beiden weiteren Gehäusebohrungen (13) und (16) gemeinsam eine Gehäusebohrung bilden und somit lediglich eine einzige Feder vorzusehen ist, die so angeordnet ist, daß sie mit ihren einander abgewandten Enden die einander zugewandten Seiten der beiden Träger (11, 7) und (17, 21) von den Stirnseiten des Zylindergehäuses (1) weg beaufschlagt.The further housing bores (13, 16) can be designed as a single through-bore which has an insert (15) serving as a support for both springs (4) and (18) or also two inserts, each insert then having a spring (4th ) or (18) is assigned.
It is of course also conceivable to omit the insert (15) so that the two further housing bores (13) and (16) together form a housing bore and thus only a single spring is to be provided, which is arranged such that its ends face away from each other the mutually facing sides of the two carriers (11, 7) and (17, 21) from the end faces of the cylinder housing (1) away.
Es können anstelle einer Durchgangsbohrung auch zwei einzelne, nach Art einer Sackbohrung ausgebildete Bohrungen für die Träger vorgesehen werden. In einem solchen Fall kann auf einen Einsatz verzichtet werden, da der Boden einer jeden Sackbohrung als Federabstützung für die zugeordnete Feder (4) bzw. (18) dienen würde.Instead of a through bore, two individual bores designed in the manner of a blind bore can also be provided for the supports. In such a case, an insert can be dispensed with, since the bottom of each blind bore would serve as spring support for the associated spring (4) or (18).
Die Bohrung bzw. die Bohrungen können einen Kreisquerschnitt, aber auch jeden beliebigen von der Kreisform abweichenden Querschnitt aufweisen.
Wird ein Querschnitt gewählt, der von der Kreisform abweicht, so erübrigt sich eine zusätzliche Verdrehsicherung für die Träger (11, 7) und (17, 21).The bore or the bores can have a circular cross section, but also any cross section deviating from the circular shape.
If a cross section is chosen that deviates from the circular shape, an additional anti-rotation lock for the supports (11, 7) and (17, 21) is unnecessary.
Denkbar ist es auch, mehrere weitere Bohrungen zur Halterung und Führung von mehreren Trägern für Umlenkelemente im Zylindergehäuse vorzusehen.
Die weitere Gehäusebohrung (13, 16) oder auch die weiteren Gehäusebohrungen für die Träger (11, 7) und (17, 21) können auch leicht schräg in Bezug auf die Längsachse des Zylindergehäuses (1) im Zylindergehäuse (1) angeordnet sein.It is also conceivable to provide several further bores for holding and guiding several carriers for deflecting elements in the cylinder housing.
The further housing bore (13, 16) or the Further housing bores for the supports (11, 7) and (17, 21) can also be arranged in the cylinder housing (1) in a slightly oblique manner with respect to the longitudinal axis of the cylinder housing (1).
Der die Rolle tragende Endbereich eines jeden Trägers kann gekröpft ausgebildet sein.The end region of each carrier that carries the roller can be configured cranked.
Jeder eine Rolle tragende Träger kann wenigstens teilweise aus einem rohrförmigen Körper bestehen, welcher zur Aufnahme der zugehörigen Spannfeder für Träger mit Rolle dienen kann. Der Träger kann jedoch auch aus Vollmaterial bestehen, so daß die Feder die der weiteren Gehäusebohrung zugewandte Stirnfläche des Trägers beaufschlagt.Each support carrying a role can at least partially consist of a tubular body which can serve to receive the associated tension spring for supports with a role. However, the carrier can also consist of solid material, so that the spring acts on the end face of the carrier facing the further housing bore.
Selbstverständlich ist jeder Träger so ausgebildet, daß er in der zugehörigen weiteren Gehäusebohrung sicher geführt wird.Of course, each carrier is designed so that it is securely guided in the associated further housing bore.
Soll auf besondere Führungsmittel verzichtet werden, so wird der Träger so ausgebildet, daß er der Querschnittsform der weiteren Gehäusebohrung angepaßt ist.If special guide means are to be dispensed with, the carrier is designed such that it is adapted to the cross-sectional shape of the further housing bore.
Auf zusätzliche, an den Trägern (11, 7) und (17, 21) anzuordnende Anschläge (5) und (19) kann verzichtet werden, wenn die Länge der Träger (11, 7) bzw. (17, 21) so bemessen wird, daß die Träger (11, 7) bzw. (17, 21) mit ihren in den weiteren Gehäusebohrungen (13, 16) gelegenen Stirnflächen an dem Einsatz (15) bzw. an den Einsätzen oder an dem Boden der Sackbohrungen zur Anlage kommen, wenn der oder die Träger (11, 7) bzw. (17, 21) einen vorbestimmbaren Hub in Richtung auf das Zylindergehäuse (1) zu ausgeführt haben.Additional stops (5) and (19) to be arranged on the carriers (11, 7) and (17, 21) can be dispensed with if the length of the carriers (11, 7) or (17, 21) is dimensioned in this way that the supports (11, 7) or (17, 21) come into contact with their end faces in the further housing bores (13, 16) on the insert (15) or on the inserts or on the bottom of the blind bores, if the carrier or carriers (11, 7) or (17, 21) have a predeterminable stroke in the direction of the cylinder housing (1).
Als Anschlag kann auch jede Feder (4) bzw. (18) selbst dienen, wenn sie sich in vollständig zusammengedrücktem Zustand (Windung an Windung) befindet oder wenn die Feder sehr stark ausgelegt ist.Each spring (4) or (18) itself can also serve as a stop if it is in a fully compressed state (turn to turn) or if the spring is designed to be very strong.
Die Funktion des vorstehend beschriebenen Arbeitszylinders wird nachfolgend näher erläutert.The function of the working cylinder described above is explained in more detail below.
Sind die beiden Arbeitskammern (33) und (29) drucklos oder weisen gleich hohe Drücke auf, so werden die Träger (11, 7) und (17, 21) mit den Rollen (8) (22) mittels des Zugelementes (25) gegen die Kraft der Federn (4) bzw. (18) so in der weiteren Führung (Gehäusebohrungen (13, 16)) gehalten, daß sie mit ihren Anschlägen (5) bzw. (19) an den zugeordneten Stirnseiten des Zylindergehäuses (1) anliegen.If the two working chambers (33) and (29) are depressurized or have the same high pressures, the supports (11, 7) and (17, 21) with the rollers (8) (22) are counteracted by means of the tension element (25) the force of the springs (4) or (18) is held in the further guide (housing bores (13, 16)) in such a way that their stops (5) or (19) rest against the associated end faces of the cylinder housing (1) .
Wird beispielsweise die zweite Arbeitskammer (29) mit Druckmittel beaufschlagt und der Druck in der ersten Arbeitskammer (33 ) abgebaut, so wird der Kolben (31) in Richtung auf die erste Arbeitskammer (33) zu verschoben (Pfeil X).
Das Zugelement (25) wird auf seiner die zweite Rolle (22) teilweise umschlingenden Seite mit Zug belastet, da über das Zugelement (25) der Mitnehmer (14) vom Kolben (31) nach rechts, in Richtung auf den zweiten Deckel (24) zu bewegt wird (gezogen wird).If, for example, pressure medium is applied to the second working chamber (29) and the pressure in the first working chamber (33) is reduced, the piston (31) is displaced in the direction of the first working chamber (33) (arrow X).
The tension element (25) is loaded with tension on its side which partially wraps around the second roller (22), because the tension element (25) moves the driver (14) from the piston (31) to the right, towards the second cover (24). is moved to (being pulled).
Der die erste Rolle (8) teilweise umschlingende Teil des Zugelementes (25) (Teil zwischen Mitnehmer (14), erster Rolle (8) und Kolben (31)) wird bei diesem Vorgang entlastet, wobei ein geringes Spiel zwischen der ersten Rolle (8) und dem Zugelement (25) entstehen würde.The part of the tension element (25) which partially wraps around the first roller (8) (part between driver (14), first roller (8) and piston (31)) is relieved in this process, with a slight play between the first roller (8 ) and the tension element (25) would arise.
Da jedoch der die erste Rolle (8) tragende Träger (11, 7) durch die Kraft der Feder (4) nach links, von der zugehörigen Stirnseite des Zylindergehäuses (1) weg, verschoben wird, wobei sich der Anschlag (5) des ersten Trägers (11, 7) von dieser Stirnseite des Zylindergehäuses (1) löst (wie in Fig.1 dargestellt) wird das Zugelement (25) weiter gespannt gehalten.However, since the carrier (11, 7) carrying the first roller (8) is displaced to the left by the force of the spring (4), away from the associated end face of the cylinder housing (1), the stop (5) of the first Carrier (11, 7) from this end face of the cylinder housing (1) releases (as shown in Fig.1), the tension element (25) is kept tensioned.
In gleicher Weise wird bei einer Bewegung des Kolbens (31) in Richtung auf die zweite Arbeitskammer (29) zu und bei einer daraus resultierenden Bewegung des Mitnehmers (14) nach links, in Richtung auf den ersten Deckel (10) zu, der die erste Rolle (8) teilweise umschlingende Bereich des Zugelementes (25) (Bereich zwischen Mitnehmer (14), erster Rolle (8) und Kolben (31) mit Zug belastet.
Der die zweite Rolle (22) teilweise umschlingende Bereich des Zugelementes (25) (Bereich zwischen Mitnehmer (14), zweiter Rolle (22) und Kolben (31)) wird entlastet.In the same way, with a movement of the piston (31) towards the second working chamber (29) and with a resulting movement of the driver (14) to the left, towards the first cover (10), which is the first Roll (8) partially wrapping area of the tension element (25) (area between driver (14), first roll (8) and piston (31) loaded with tension.
The area of the tension element (25) that partially wraps around the second roller (22) (area between driver (14), second roller (22) and piston (31)) is relieved.
Durch die am Zugelement (25) auftretende Kraft wird der erste Träger (11, 7) gegen die Kraft der Feder (4) in die weitere Gehäusebohrung (13, 16) eingeschoben, und zwar soweit, bis der Anschlag (5) des ersten Trägers (11, 7) an der zugehörigen Stirnseite des Zylindergehäuses (1) zur Anlage kommt.
Die auf dem zweiten Träger (17, 21) einwirkende Kraft der zweiten Feder (18) verschiebt den zweiten Träger (17, 21) von der zugehörigen Stirnseite des Zylindergehäuses (1) weg, wobei sich der Anschlag (19) von dieser Stirnseite des Zylindergehäuses (1) löst. Über die mit dem zweiten Träger (17, 21) verbundene zweite Rolle (22) wird das Zugelement (25) im Bereich zwischen dem Mitnehmer (14), der zweiten Rolle (22) und dem Kolben (31) gespannt gehalten.The force acting on the tension element (25) pushes the first carrier (11, 7) into the further housing bore (13, 16) against the force of the spring (4), namely until the stop (5) of the first carrier (11, 7) comes to rest on the associated end face of the cylinder housing (1).
The force of the second spring (18) acting on the second carrier (17, 21) displaces the second carrier (17, 21) away from the associated end face of the cylinder housing (1), the stop (19) moving away from this end face of the cylinder housing (1) triggers. The tension element (25) is held tensioned in the area between the driver (14), the second roller (22) and the piston (31) via the second roller (22) connected to the second carrier (17, 21).
Claims (13)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE3909344 | 1989-03-22 | ||
DE3909344A DE3909344A1 (en) | 1989-03-22 | 1989-03-22 | PRESSURE-OPERABLE WORKING CYLINDER |
Publications (3)
Publication Number | Publication Date |
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EP0388586A1 true EP0388586A1 (en) | 1990-09-26 |
EP0388586B1 EP0388586B1 (en) | 1992-04-01 |
EP0388586B2 EP0388586B2 (en) | 1996-10-09 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP90101128A Expired - Lifetime EP0388586B2 (en) | 1989-03-22 | 1990-01-20 | Pressure-fluid actuator |
Country Status (4)
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US (1) | US5022311A (en) |
EP (1) | EP0388586B2 (en) |
JP (1) | JPH02275102A (en) |
DE (2) | DE3909344A1 (en) |
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DE2830058A1 (en) * | 1978-02-07 | 1979-09-20 | Otto Dipl Ing Dr Te Gersdorfer | HYDRAULIC OR PNEUMATIC DRIVE UNIT FOR ROTATING STRAIGHT LINE MOVEMENT, ESPECIALLY FOR SLIDING DOORS |
YU143979A (en) * | 1979-06-19 | 1983-01-21 | Miln Dobljekar | Cylinder with a chain |
DE2938332A1 (en) * | 1979-09-21 | 1981-03-26 | Robert Bosch Gmbh, 70469 Stuttgart | Mechanical transmission for fluid actuator piston - has metal tape passed around pulleys with geometry optimised relative to endurance stress limits |
DE2939153C2 (en) * | 1979-09-27 | 1983-12-22 | Dürkoppwerke GmbH, 4800 Bielefeld | Fluid-operated linear drive for an output member that moves in a straight line with a large stroke |
US4289177A (en) * | 1980-01-17 | 1981-09-15 | Eaton Corporation | Tree processing apparatus |
DE3016696C2 (en) * | 1980-04-30 | 1986-09-04 | Robert Bosch Gmbh, 7000 Stuttgart | Belt cylinder with a piston driven by a fluid |
DE3317113A1 (en) * | 1983-05-10 | 1984-11-15 | Knorr-Bremse GmbH, 8000 München | POSITIONING DEVICE FOR PISTONLESS CYLINDERS |
DE3436977A1 (en) * | 1984-10-09 | 1986-04-10 | Antriebs Steuerungstech Ges | LINEAR ACTUATOR |
DE3505167A1 (en) * | 1985-02-15 | 1986-08-28 | GAS Gesellschaft für Antriebs- und Steuerungstechnik mbH & Co KG, 7742 St Georgen | Linear drive |
GB8621466D0 (en) * | 1986-09-05 | 1986-10-15 | Clarke D C | Fluid operable devices |
US4803804A (en) * | 1987-09-14 | 1989-02-14 | Bryant Charles B | Telescopic belt tightener |
-
1989
- 1989-03-22 DE DE3909344A patent/DE3909344A1/en not_active Withdrawn
-
1990
- 1990-01-20 DE DE9090101128T patent/DE59000074D1/en not_active Expired - Fee Related
- 1990-01-20 EP EP90101128A patent/EP0388586B2/en not_active Expired - Lifetime
- 1990-03-09 JP JP2056809A patent/JPH02275102A/en active Pending
- 1990-03-20 US US07/496,252 patent/US5022311A/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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GB1192249A (en) * | 1967-10-13 | 1970-05-20 | Hydraulic Drilling Equipment L | Force Applying Device for Moving a Load. |
DE2359013A1 (en) * | 1973-11-27 | 1975-05-28 | Witte & Sohn C | Piston/cylinder assembly - has carrier block attached to either end of piston by wire running over pulleys |
Non-Patent Citations (1)
Title |
---|
ENERGIE FLUIDE, Band 14, Nr. 81, September 1975; "Vérins à câble" * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0828083A2 (en) * | 1996-09-06 | 1998-03-11 | Deutsche Star GmbH | A linear guiding unit |
EP0828083A3 (en) * | 1996-09-06 | 1998-05-06 | Deutsche Star GmbH | A linear guiding unit |
US5868499A (en) * | 1996-09-06 | 1999-02-09 | Deutsche Star Gmbh | Linear guiding unit |
Also Published As
Publication number | Publication date |
---|---|
US5022311A (en) | 1991-06-11 |
JPH02275102A (en) | 1990-11-09 |
EP0388586B2 (en) | 1996-10-09 |
EP0388586B1 (en) | 1992-04-01 |
DE3909344A1 (en) | 1990-09-27 |
DE59000074D1 (en) | 1992-05-07 |
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