EP0177036A1 - Verriegelungsvorrichtung für eine verschiebbare Stange in einem Gehäuse - Google Patents

Verriegelungsvorrichtung für eine verschiebbare Stange in einem Gehäuse Download PDF

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Publication number
EP0177036A1
EP0177036A1 EP85112502A EP85112502A EP0177036A1 EP 0177036 A1 EP0177036 A1 EP 0177036A1 EP 85112502 A EP85112502 A EP 85112502A EP 85112502 A EP85112502 A EP 85112502A EP 0177036 A1 EP0177036 A1 EP 0177036A1
Authority
EP
European Patent Office
Prior art keywords
rod
piston
sleeve
spring
blocking
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
Application number
EP85112502A
Other languages
English (en)
French (fr)
Other versions
EP0177036B1 (de
Inventor
Alain Holvoet
Christian Tour
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.)
Compagnie Parisienne dOutillage a Air Comprime SA
Original Assignee
Compagnie Parisienne dOutillage a Air Comprime SA
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 Compagnie Parisienne dOutillage a Air Comprime SA filed Critical Compagnie Parisienne dOutillage a Air Comprime SA
Priority to AT85112502T priority Critical patent/ATE31785T1/de
Publication of EP0177036A1 publication Critical patent/EP0177036A1/de
Application granted granted Critical
Publication of EP0177036B1 publication Critical patent/EP0177036B1/de
Expired legal-status Critical Current

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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
    • F15B15/262—Locking mechanisms using friction, e.g. brake pads

Definitions

  • the present invention relates to a device for blocking a rod movable in translation in a body comprising inside the body a piston surrounding the rod separated from a position by a spring and pushed back towards this position by injection of fluid into a chamber located on the side of the piston opposite to the spring, a bushing whose internal surface is a cylinder surrounding the rod and whose external surface has a frustoconical shape, said bushing being split parallel to the axis of the rod and fixed relative to the body and blocking means which for one direction of movement of the piston come to apply the sleeve against the rod causing the blocking of the rod in the body and for the other direction of movement of the piston release the sleeve and cause the unlocking of the rod .
  • the blocking means consist of a ball race applied to the conical sleeve by a complementary conical surface formed in the piston.
  • This device is bulky because the raceway must include at least two groups of spaced apart balls and moreover the transmission of forces is not very good so that a large spring is required to block the rod and therefore a high energy for push it back with the piston.
  • the device according to the invention making it possible to avoid these drawbacks is characterized in that said blocking means comprise several rollers which roll on the bushing and whose axes are integral with the piston and are located in a plane perpendicular to the axis of the rod.
  • the transmission of forces between the piston and the split bushing is done very well by the rollers so that the spring can be less important and therefore the energy applied to the piston to push the spring also less important.
  • the device according to the invention is therefore very well suited to pneumatic control. In addition, the size of this device is reduced.
  • the locking device ( Figures 1 to 3) comprises a movable rod 1 in a body 2 comprising a casing 17 with a cylindrical cavity closed at its lower part by a base 3 surrounding the rod 1.
  • the base 3 is provided in its central part a split socket 4.
  • the internal surface of the sleeve 4 is cylindrical and surrounds the rod 1, the external surface is frustoconical, flaring away from the base 3.
  • the socket 4 has four longitudinal slots 5.
  • the piston 6 sliding around the rod 1.
  • the piston 6 has a lower part in the form of a skirt 7 which is provided with four rollers 8 rotating around axes 9 arranged in a plane perpendicular to the axis of the rod 1 along the sides of a square, said rollers 8 rolling on the external surface of the sleeve 4.
  • the body 2 also comprises a cover 11 surrounding the rod which is arranged above the piston 6 and closes the envelope 17.
  • an orifice 12 for supplying pressurized air.
  • Seals 14, 15, 16 are arranged between the cover 11 and the rod 1 and between the lateral surfaces of the piston 6 and the rod 1 and the casing 17 surrounding the piston 6.
  • rollers 8 apply the sleeve 4 to the rod 1 which is then blocked ( Figure 3).
EP85112502A 1984-10-05 1985-10-03 Verriegelungsvorrichtung für eine verschiebbare Stange in einem Gehäuse Expired EP0177036B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85112502T ATE31785T1 (de) 1984-10-05 1985-10-03 Verriegelungsvorrichtung fuer eine verschiebbare stange in einem gehaeuse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8415306 1984-10-05
FR8415306A FR2571451B1 (fr) 1984-10-05 1984-10-05 Dispositif de blocage d'une tige mobile dans un corps

Publications (2)

Publication Number Publication Date
EP0177036A1 true EP0177036A1 (de) 1986-04-09
EP0177036B1 EP0177036B1 (de) 1988-01-07

Family

ID=9308372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112502A Expired EP0177036B1 (de) 1984-10-05 1985-10-03 Verriegelungsvorrichtung für eine verschiebbare Stange in einem Gehäuse

Country Status (4)

Country Link
EP (1) EP0177036B1 (de)
AT (1) ATE31785T1 (de)
DE (1) DE3561349D1 (de)
FR (1) FR2571451B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005016723A1 (de) * 2005-04-11 2006-10-12 Zimmer, Günther Brems- und/oder Klemmvorrichtung mit wälzgelagertem Keilgetriebe
CN102011764A (zh) * 2010-06-05 2011-04-13 常州液压成套设备厂有限公司 液压油缸锁定装置
CN103206428A (zh) * 2013-04-03 2013-07-17 同济大学 双向楔形液压锁紧装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE630017A (de) *
US2811951A (en) * 1954-08-31 1957-11-05 Gen Motors Corp Actuator and locking means therefor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1804857B2 (de) * 1968-10-24 1971-11-25 Hänchen, Siegfried, 7304 Ruit Vorrichtung zur klemmung einer axial verschiebbaren kolben stange
US3918346A (en) * 1974-07-11 1975-11-11 Us Army Frictional lock for retaining a rotatable piston against axial displacement
DE2655284A1 (de) * 1976-12-07 1978-06-08 Festo Maschf Stoll G Pneumatisch oder hydraulisch und einseitig oder doppelt beaufschlagbare kolben-zylinder-vorrichtung
CA1109366A (en) * 1977-10-21 1981-09-22 Andrew Stratienko Locking device for hydraulic actuator
DE2755456A1 (de) * 1977-12-13 1979-06-28 Bosch Gmbh Robert Arbeitszylinder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE630017A (de) *
US2811951A (en) * 1954-08-31 1957-11-05 Gen Motors Corp Actuator and locking means therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005016723A1 (de) * 2005-04-11 2006-10-12 Zimmer, Günther Brems- und/oder Klemmvorrichtung mit wälzgelagertem Keilgetriebe
CN102011764A (zh) * 2010-06-05 2011-04-13 常州液压成套设备厂有限公司 液压油缸锁定装置
CN103206428A (zh) * 2013-04-03 2013-07-17 同济大学 双向楔形液压锁紧装置

Also Published As

Publication number Publication date
EP0177036B1 (de) 1988-01-07
FR2571451A1 (fr) 1986-04-11
ATE31785T1 (de) 1988-01-15
FR2571451B1 (fr) 1987-09-04
DE3561349D1 (en) 1988-02-11

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