EP1977116B1 - Druckluft- und hydraulikzylinder mit kolbenstangenverriegelung - Google Patents

Druckluft- und hydraulikzylinder mit kolbenstangenverriegelung Download PDF

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Publication number
EP1977116B1
EP1977116B1 EP06769514A EP06769514A EP1977116B1 EP 1977116 B1 EP1977116 B1 EP 1977116B1 EP 06769514 A EP06769514 A EP 06769514A EP 06769514 A EP06769514 A EP 06769514A EP 1977116 B1 EP1977116 B1 EP 1977116B1
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EP
European Patent Office
Prior art keywords
piston rod
pneumatic
hydraulic cylinder
locking
sleeve
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Application number
EP06769514A
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English (en)
French (fr)
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EP1977116A1 (de
Inventor
Zbigniew Czarnota
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Rewa Spolka Z Oo
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Rewa Spolka Z Oo
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Application filed by Rewa Spolka Z Oo filed Critical Rewa Spolka Z Oo
Publication of EP1977116A1 publication Critical patent/EP1977116A1/de
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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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/26—Locking mechanisms
    • F15B15/261—Locking mechanisms using positive interengagement, e.g. balls and grooves, for locking in the end positions

Definitions

  • the subject of this invention is the pneumatic-and-hydraulic cylinder with interlock of its piston rod, for application in control systems for opening and closing industrial fixtures, such as fume-extraction flap valves.
  • a hydraulic cylinder known from Polish patent application, P-317708 has two cylinder end caps, one provided with a hole for piston rod connected with piston that is reciprocal between said two cylinder end caps.
  • the cylinder end caps are joined on their one side with the cylinder through a screw joint, whereas their other sides are provided with channels for hydraulic medium inlet and outlet to and from respective chambers created between the piston and the cylinder end caps, whereas each of the end caps contains an external member and insert, and the hydraulic medium channels are shaped through the external member and that insert.
  • the hydraulic cylinder known from Polish application for utility pattern, W-104190 has a bottom with catch eye means fixed to it and a piston inside the cylinder with the piston rod ending with front eye means, as well as an in-built hydraulic system with a double, crosswise through hole controlled by a check valve that consists of forwardcheck valve and retreat check valve.
  • the cylinder bottom is provided with two flat cutouts at both outlets of the crosswise through hole, and the retreat check valve is provided with an internal channel that is connected with external output head, with and external pipe connected to it.
  • Hydraulic-and-pneumatic cylinder known from Polish patent specification, P-334324 , has front and rear cylinder covers that are connected witch sleeve coupler through hollow angle connectors, and the end of its piston rod is provided with eye bolt and locking piston fixed to it, with the top seal of the latter adhering to cylindrical surface of the front cover, whereas an annular chamber is created between the front cover face and the face of the locking piston.
  • Said chamber contains steel balls resting on piston rod surface, whereas the end of cylindrical surface of the front cover is separably connected with the bottom which adheres to locking piston surface, and a helical spring is installed in the circumferential gap created between the bottom and the locking piston.
  • the front cover has a small channel which joins the angular connector seat with annular chamber with cylinder chamber, whereas the side surface of the rear cover has also two stub pipes for cylinder working medium screwed in coaxially to each other, and the stub pipes and angular connector are connected with channels, as well as the channel provided in main axis of the real cover.
  • Pneumatic-and-hydraulic cylinder known from German patent specification, DE 881288241 , with interlock of piston rod consisting of cylinder with two end covers, internal piston rod provided with piston moving between said covers as well as with eye bolt and locking piston resting on steel balls backed by the face of the front cover, provided with the channels connecting the inter-piston chamber with the seat of angular connector and with the chamber under locking piston, both said covers being interconnected with pipe connector through angular connectors, wherein one end of the cylindrical sleeve is provided with tight-mounted front cover with locking unit and at the other end said sleeve is provided with tight-mounted rear cover with locking unit.
  • the invention aims to develop a new design of pneumatic-and-hydraulic cylinder with an interlock in order to ensure its safe cooperation with opening and closing mechanisms of fume extraction flap valves.
  • the essence of the pneumatic-and-hydraulic cylinder with interlock of its piston rod of this invention is that the locking unit of the front cover of the cylinder consists of a piston in tight mounting on piston rod and in the sleeve body seat, with steel balls located in-between and adhering to piston rod surface, said piston rod being pressed from above with helical springs that are based in the lid covering the upper end of the sleeve body, as well as the unlocking ring mounted rotatably on its external surface, said unlocking ring being connected with said body through springing means so that its turning angle is limited.
  • the locking unit at the rear cover of the cylinder consists of a plunger with axial seat accommodating other plunger with locking steel balls on its upper surface, whereas the lower surface of the external plunger is pressed by helical springs based in the lid that covers the lower end of sleeve body, whereas the unlocking ring is rotatable on the external surface of the body and is connected to it through springing means limiting its turning angle.
  • Both locking units have profile slot cutouts provided side surface of the unlooking ring, situated opposite each other, and functioning as cams, containing the head of bolt mounted in the sleeve body, whereas the spring means with the unlocking ring are shielded with cover separably connected with that ring.
  • said springing means are in the form of helical tensioning springs with their one end hitched to pins located in unlocking ring and their other ends hitched to pins located on sleeve body.
  • fig.1 and 2 present the pneumatic-and-hydraulic cylinder with interlock in form of two axial sections perpendicular to each other along the lines A-A and B-13 showing its piston rod in the extreme front position in blocked condition and in the extreme rear position in blocked condition
  • fig.3 is the front view of the front cover with feeding and locking of the same cylinder
  • fig. 4 is the axial section of the same cover with locking ring in blocked and unblocked positions, sectioned along the line C-C in fig.3 , fig.
  • fig. 5 is the axial section of the same cover with locking ring in blocked and unblocked positions, sectioned along the line D-D in fig.4
  • fig.6 is the cross section of the same cover sectioned along the line E-E
  • fig.7 is the cross section of the same cover sectioned along the line F-F
  • fig.8 is the vertical section of the same cover sectioned along the line G-G in fig.7
  • fig.9 is the cross section of the same cover sectioned along the line H-H in fig.7
  • fig.10 is the axial section of the rear cover with cylinder interlock with locking ring
  • fig.11 is the axial section of the same cover sectioned along the line K-K in fig.10
  • fig.12 is the cross section of the same cover sectioned along the line L-L in fig.10
  • fig.13 is the cross section of the same cover sectioned along the line N-N
  • fig.14 is the cross
  • Pneumatic-hydraulic with the interlock of its piston rod consists of cylindrical sleeve 1 containing shiftable piston 2 , on piston rod 3 located in the axis of the sleeve 1 , one end of said sleeve being provided with tight-mounted front cover 4 provided with feeding connectors 5 and the locking unit 6 , and the other end being provided with tight-mounted rear cover 7 with locking unit 8 and feeding connectors 9 connected, through sleeve connectors 10 , with feeding connectors 5 of the front cover 4 .
  • the front cover 4 consists of sleeve body 11 with a three-stage outer diameter and a two-stage inner diameter with circumferential flange 12 , which bears the locking unit constituting a rotatable unlocking ring 13 having on its side surface two opposite profiled slot ports 14 with its curvilinear lower edges 15 functioning as cams containing the heads of bolts 16 screwed in the upper end of the body, whereas the upper surface 17 of its flange 12 and the side surface of the unlocking ring 13 are provided with two pins 18 , located opposite each other, with two hitched tensioning springs 19 enabling the unlocking of that ring, whereas the sleeve body 11 is mounted inside one end of the cylindrical sleeve 1 .
  • Both tensioning springs 19 with the unlocking ring 13 are shielded with the cover 20 connected with that ring with crews 21 .
  • the inner upper face 22 of the sleeve body 11 bears the front locking plunger 23 provided with external seal 24 adhering to the surface of sleeve body 11 and with internal seal 25 adhering to the piston rod 3
  • the lower end of the plunger has a chamfer 26 contacting circumferentially arranged locking balls 27 , which rest also on the upper face 22 of the sleeve body 11 , and are contained in the circumferential channel 28 of the piston rod 3 .
  • the upper face of the sleeve body 1 bears the lid 29 of the front cover 4 connected with that body with mounting ring 30 , whereas the lover end of the body is provided with slide sleeve 31 , and the lid 29 is provided with slide sleeve 32 and the scraping ring 33 , whereas the lower face of the lid 29 has two cylindrical seats 34 , containing helical tensioning springs 35 with their lower ends resting on the face 22 of the sleeve body 11 .
  • the rear cover 7 is of similar design as the front cover 4 and it also comprises the sleeve body 36 three-stage outer diameter and two-stage inner diameter with circum-ferential flange 37 .
  • the flange 37 bears the rotatable locking unit 8 constituting an unlocking ring 13 , also having on its side surface two opposite profiled slot ports 14 functioning as cams containing the heads of bolts 16 screwed in the upper end of that body and functioning as guides, whereas the upper surface 38 of its flange 37 and the side surface of the unlocking ring 13 and the side surface of the unlocking ring 18 , located opposite each other, with two hitched tensioning springs 19 enabling the unlocking of that ring. Both tensioning springs 19 and the unlocking ring 13 are shielded with the cover 20 connected with that ring with crews 21 .
  • the inner upper face 38 of the sleeve body 36 bears the rear lock plunger 40 with the seal 41 , and containing the plunger 42 of locking balls 43 arranged between face 39 and the rear lock plunger 40.
  • the upper face of the sleeve body 36 bears the lid 45 that closes the rear cover 7 connected with that body with mounting ring 30 , whereas the lover face of the lid 45 has two cylindrical seats 44 , containing helical compression springs 46, with their lower ends resting on the face of the plunger 40 of the real lock.
  • the cylinder of the invention is supplied with pneumatic on oil working medium enabling its operation in the manner that is commonly known and applied.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Servomotors (AREA)

Claims (5)

  1. Pneumatischer und hydraulischer Zylinder mit einer Verriegelung seiner Kolbenstange, zusammengesetzt aus einem Zylinder mit zwei Enddeckeln, einer inneren Kolbenstange ausgestattet mit einem Kolben, der sich zwischen den genannten Deckeln bewegt, und auch mit einer Augenschraube und einem Verriegelungskolben, der auf den durch die Oberfläche des Vorderdeckels unterstützten Stahlkugeln ruht, ausgestattet mit Kanälen, die die Inter-Kolben -Kammer mit dem Sitz eines Winkelverbindungsstückes und mit der unter dem Verriegelungskolben befindlichen Kammer verbinden, wobei beide besagte Deckel mit einem Rohrverbindungsstück durch die Winkelverbindungsstücke miteinander verbunden sind, darüber hinaus ist ein Ende der zylindrischen Buchse mit einem eng montierten Vorderdeckel mit Sperrvorrichtung ausgestattet und am anderen Ende ist die besagte Buchse mit einem eng montierten Hinterdeckel mit Sperrvorrichtung ausgestattet gekennzeichnet dadurch, dass die besagte Sperrvorrichtung (6) des besagten Vorderdeckels (4) aus einem an der Kolbenstange (3) und im Sitz des Buchsenkörpers (11) eng montierten Tauchkolben (23) zusammengesetzt ist, wobei die Stahlkugeln (27) zwischen und angrenzend an der Oberfläche der Kolbenstange (3) angeordnet sind, welche Kolbenstange von oben mittels von schraubenförmigen Federn (35) gedrückt wird, welche Federn im das obere Ende des Buchsenkörpers (1) und auch den Entriegelungsring (13) deckenden Deckel basiert sind, wobei der Entriegelungsring an seiner Außenoberfläche drehbar montiert ist, wobei der besagte Entriegelungsring (13) mit dem besagten Körper durch federnde Mittel (19) verbunden ist so dass sein Drehwinkel beschränkt ist.
  2. Pneumatischer und hydraulischer Zylinder laut Anspruch 1 bei welchem die Sperrvorrichtung (8) des Hinterdeckels (7) aus einem Tauchkolben (40) mit Axialsitz zum Empfangen des Tauchkolbens (42) mit an seiner oberen Oberfläche befindlichen Sperrstahlkugeln (43) besteht, wobei die untere Oberfläche des Tauchkolbens (40 ) durch die im das untere End des Buchenkörpers (36) deckenden Deckel (45) basierten schraubenförmigen Federn (46) gedrückt wird, wobei der Entriegelungsring (13) drehbar an der Außenoberfläche des besagten Körpers montiert und mit ihm mittels eines seinen Drehwinkel beschränkenden Feder-Mittels verbunden ist.
  3. Pneumatischer und hydraulischer Zylinder laut Anspruch 1 oder 2 bei welchem der Entriegelungsring (13) Profilschlitzports (14) aufweist, welche Profilschlitzports an dessen Seitenoberfläche gegenüber einander angeordnet liegen und als Nocken, welche den im Buchsenkörper (11) und (36) basierten Schraubenkopf (26) enthalten, funktionieren.
  4. Pneumatischer und hydraulischer Zylinder laut Anspruch 1 oder 2 bei welchem die federnden Elemente (19) in Gestalt von schraubenförmigen Spannfedern, deren Enden die im Entriegelungsring basierten Stifte (18) und deren andere Enden die im Buchsenkörper (11) und (36) basierten Stifte (18) einrasten.
  5. Pneumatischer und hydraulischer Zylinder laut Anspruch 1 oder 2 oder 4 bei welchem die federnden Mittel (19) zusammen mit dem Entriegelungsring (13) mittels des mit dem besagten Ring getrennt verbundenen Deckels (29) abgeschirmt sind.
EP06769514A 2006-01-23 2006-07-21 Druckluft- und hydraulikzylinder mit kolbenstangenverriegelung Active EP1977116B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL378794A PL210645B1 (pl) 2006-01-23 2006-01-23 Siłownik pneumatyczno-hydrauliczny z blokadą jego tłoczyska
PCT/PL2006/000051 WO2007084018A1 (en) 2006-01-23 2006-07-21 Pneumatic-and-hydraulic cylinder with piston rod interlock

Publications (2)

Publication Number Publication Date
EP1977116A1 EP1977116A1 (de) 2008-10-08
EP1977116B1 true EP1977116B1 (de) 2011-03-09

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ID=37312015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06769514A Active EP1977116B1 (de) 2006-01-23 2006-07-21 Druckluft- und hydraulikzylinder mit kolbenstangenverriegelung

Country Status (5)

Country Link
EP (1) EP1977116B1 (de)
AT (1) ATE501362T1 (de)
DE (1) DE602006020628D1 (de)
PL (1) PL210645B1 (de)
WO (1) WO2007084018A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101943289B (zh) * 2010-08-19 2012-12-05 江阴市普泰隆阀业有限公司 还原炉进料气动一体式控制阀
US9481453B2 (en) * 2014-03-31 2016-11-01 Goodrich Corporation Shrinking system for landing gear
CN105986729B (zh) * 2015-02-13 2017-11-17 宁波欧适节能科技有限公司 一种具有自动锁扣功能的空压执行装置
CN111059094B (zh) * 2020-01-09 2021-09-14 长春工业大学 一种限位螺杆旋转解耦型机械式无杆锁紧气缸
CN111734713A (zh) * 2020-07-13 2020-10-02 方盛车桥（柳州）有限公司 转向锁止气缸
CN112049829B (zh) * 2020-08-18 2022-04-15 温州大学 一种双向变量机构及双向变量泵
CN114030596B (zh) * 2021-12-17 2023-08-11 江西洪都航空工业集团有限责任公司 一种带卡环内锁的套筒式撑杆

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3397620A (en) * 1966-10-06 1968-08-20 Milwaukee Cylinder Corp Fluid actuator with annular piston locking means
DE3018920C2 (de) * 1980-05-17 1986-01-09 Rolf 4515 Bad Essen Andexser Verriegelung für Kolben von Druckmittelzylindern
DE8812882U1 (de) * 1988-10-13 1989-02-16 Fa. Otto Grasl, 3452 Heiligeneich Druckluftzylinder mit Endlageverriegelung, insbesondere zur Betätigung von Rauchabzugsklappen
SE509901C2 (sv) * 1994-06-15 1999-03-22 Multidoc Hydraulic Ab Hydraulisk kolvcylinder
FR2775030B1 (fr) * 1997-09-18 2000-06-02 Contat Freres Ets Verin a verrouillage et de deverrouillage

Also Published As

Publication number Publication date
WO2007084018A1 (en) 2007-07-26
DE602006020628D1 (de) 2011-04-21
PL378794A1 (pl) 2007-08-06
ATE501362T1 (de) 2011-03-15
EP1977116A1 (de) 2008-10-08
PL210645B1 (pl) 2012-02-29

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