DE69411843T2 - Linear pneumatic actuator with a reorientable locking device - Google Patents

Linear pneumatic actuator with a reorientable locking device

Info

Publication number
DE69411843T2
DE69411843T2 DE69411843T DE69411843T DE69411843T2 DE 69411843 T2 DE69411843 T2 DE 69411843T2 DE 69411843 T DE69411843 T DE 69411843T DE 69411843 T DE69411843 T DE 69411843T DE 69411843 T2 DE69411843 T2 DE 69411843T2
Authority
DE
Germany
Prior art keywords
locking device
piston
actuator
pneumatic actuator
reorientable
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.)
Expired - Fee Related
Application number
DE69411843T
Other languages
German (de)
Other versions
DE69411843D1 (en
Inventor
Luciano Migliori
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.)
Univer SpA
Original Assignee
Univer SpA
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 Univer SpA filed Critical Univer SpA
Application granted granted Critical
Publication of DE69411843D1 publication Critical patent/DE69411843D1/en
Publication of DE69411843T2 publication Critical patent/DE69411843T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • F15B15/262—Locking mechanisms using friction, e.g. brake pads
    • F15B15/264—Screw mechanisms attached to the piston
    • 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
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B2015/1495—Characterised by the construction of the motor unit of the straight-cylinder type with screw mechanism attached to the piston

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Braking Arrangements (AREA)
  • Lock And Its Accessories (AREA)

Abstract

A linear pneumatic actuator with a reversible-action locking device for presetting of the actuator with an active or passive brake. The actuator comprises a piston (13) which may reciprocate inside a cylinder (10); the linear movement of the piston (13) causes rotation of a threaded shaft (20) connected to a signal generator (25) which continually supplies the relative position of the piston (13). A locking device comprises two interconnected piston members (34, 36) which can be pneumatically actuated in opposite directions and ducts (46, 47) supplying pressurised air which can be selected during assembly so as to activate the locking device as an active brake or passive brake, respectively, in order to block the actuator piston (13). <IMAGE>
DE69411843T 1993-10-06 1994-10-04 Linear pneumatic actuator with a reorientable locking device Expired - Fee Related DE69411843T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI932123A IT1271509B (en) 1993-10-06 1993-10-06 LINEAR PNEUMATIC ACTUATOR WITH REVERSIBLE ACTION BRAKE

Publications (2)

Publication Number Publication Date
DE69411843D1 DE69411843D1 (en) 1998-08-27
DE69411843T2 true DE69411843T2 (en) 1998-12-10

Family

ID=11366988

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69411843T Expired - Fee Related DE69411843T2 (en) 1993-10-06 1994-10-04 Linear pneumatic actuator with a reorientable locking device

Country Status (5)

Country Link
EP (1) EP0648942B1 (en)
AT (1) ATE168744T1 (en)
DE (1) DE69411843T2 (en)
ES (1) ES2119039T3 (en)
IT (1) IT1271509B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20011789U1 (en) * 2000-07-06 2000-12-21 Buemach Engineering Int Bv Pressurized cylinder with mechanical travel lock in the depressurized state
ITMI20051983A1 (en) * 2005-10-19 2007-04-20 Univer Spa SELF-LOCKING BRAKING DEVICE FOR ROTATING SHAFTS AND RELATED APPLICATIONS
DE102012202761A1 (en) * 2012-02-23 2013-08-29 Siemens Aktiengesellschaft Brake arrangement of a vehicle
GB201508394D0 (en) * 2015-05-15 2015-07-01 Vivid Laminating Technologies Ltd Pneumatic positioning of laminator rollers
GB2544805A (en) * 2015-11-30 2017-05-31 Vivid Laminating Tech Ltd Pneumatic positioning of laminator rollers
CN108533563A (en) * 2018-05-10 2018-09-14 四川大学 A kind of external friction mechanical self-locking hydraulic cylinder based on ball-screw

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH627695A5 (en) * 1977-11-28 1982-01-29 Schweizerische Lokomotiv HYDRAULIC ACTUATING DEVICE FOR A BRAKE, ESPECIALLY FOR THE HAND BRAKE OF A RAIL VEHICLE.
GB2154282A (en) * 1984-02-14 1985-09-04 H C H Manufacturing Ltd Fluid pressure actuators
EP0322503A3 (en) * 1987-12-29 1991-09-25 Daihatsu Diesel Mfg. Co., Ltd. Fluid apparatus
IT1243464B (en) * 1990-07-30 1994-06-15 Univer Spa LINEAR ACTUATOR, PROGRAMMABLE, FLUID OPERATED.

Also Published As

Publication number Publication date
ES2119039T3 (en) 1998-10-01
ITMI932123A0 (en) 1993-10-06
EP0648942B1 (en) 1998-07-22
ATE168744T1 (en) 1998-08-15
IT1271509B (en) 1997-05-30
ITMI932123A1 (en) 1995-04-06
DE69411843D1 (en) 1998-08-27
EP0648942A1 (en) 1995-04-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee