EP0918162A2 - Dispositif rotatif à entraínement hydromécanique - Google Patents

Dispositif rotatif à entraínement hydromécanique Download PDF

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Publication number
EP0918162A2
EP0918162A2 EP98117594A EP98117594A EP0918162A2 EP 0918162 A2 EP0918162 A2 EP 0918162A2 EP 98117594 A EP98117594 A EP 98117594A EP 98117594 A EP98117594 A EP 98117594A EP 0918162 A2 EP0918162 A2 EP 0918162A2
Authority
EP
European Patent Office
Prior art keywords
unit according
piston
cylinder
pinion
bell
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.)
Withdrawn
Application number
EP98117594A
Other languages
German (de)
English (en)
Other versions
EP0918162A3 (fr
Inventor
Ivan Borghi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0918162A2 publication Critical patent/EP0918162A2/fr
Publication of EP0918162A3 publication Critical patent/EP0918162A3/fr
Withdrawn legal-status Critical Current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
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/065—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the rack-and-pinion type

Definitions

  • the present invention relates to a hydromechanically actuated rotating unit.
  • steering units generally of the mechanical type are used in many applications, from zootechny to the food industry to mechanics, when a high rotation force is required to move large parts.
  • These steering units of the mechanical type use chains or the like, which act directly on the steering axle of heavy machines, such as for example rotors and valves for silos, hydraulic power steering systems for fork-lift trucks, mechanical conveyors and others.
  • the aim of the present invention is to eliminate the above described drawbacks of conventional units by providing a hydromechanically actuated rotating unit which allows to achieve true labor savings, reduce production costs and ensure a rotary action of high quality which is reliable, powerful and resistant.
  • an object of the present invention is to provide a hydromechanically actuated rotating unit having a structure which is simple, relatively easy to provide in practice, safe in use, effective in operation and relatively low in cost.
  • the present hydromechanically actuated rotating unit characterized in that it comprises: a fixed bell-shaped element; a first cylinder and a second cylinder, which are mutually aligned along an axis which intersects said bell-shaped element and in which respectively a first piston and a second piston are fitted so that they can move, with sealing elements interposed; a rotating shaft, which is mounted so that it can rotate axially in said bell-shaped element; a pinion, which is rigidly coupled to said shaft; a rack which meshes with said pinion, said first and second pistons being rigidly coupled to the ends of said rack; and elements for distributing pressurized fluid, which are connected to said first and second cylinders.
  • the reference numeral 1 generally designates a hydromechanically actuated rotating unit according to the invention.
  • the rotating assembly 1 comprises a fixed bell-shaped element 2 to which a first cylinder 3 and a second cylinder 4 are rigidly and hermetically coupled; said cylinders are mutually aligned along an axis 5 which intersects the bell-shaped element 2.
  • a first piston 6 and a second piston 7 are mounted in the two cylinders 3 and 4, respectively, so that they can move with sealing elements 8 interposed.
  • a rotating shaft 9 is fitted in the bell-shaped element 2 so that it can rotate axially, and a pinion 10 is keyed thereon; a rack 11 meshes with said pinion, and the first and second pistons 6 and 7 are rigidly coupled to the ends of said rack.
  • the pinion 10 is monolithic with a rotating shaft 9 since it is formed by cutting teeth therein.
  • Elements meant to distribute pressurized fluid are connected to the first cylinder 3 and to the second cylinder 4 and are conveniently provided with valves for the access of said fluid.
  • the rack 11 is constituted by an elongated cylindrical body 12 affected by a longitudinal milling at which the teeth 13 are formed; said teeth are adapted to mesh with the teeth 14 of the pinion 10.
  • the first piston 6 and the second piston 7 are constituted by seats 15 and 16 which are formed perimetrically at the ends 17 and 18 of the cylindrical body 12 in order to accommodate sealing elements 8.
  • the sealing elements 8 are constituted by gaskets 19 made of a material such as rubber and of the lip and/or toroidal type.
  • the first cylinder 3 and the second cylinder 4 comprise, proximate to their ends, a respective intake port and/or discharge port 20 and 21 for connection to the elements for distributing pressurized fluid.
  • the end 22 of the shaft 9 is coupled to the bell-shaped element 2 by means of a first locking ring 23 and a second safety ring 24 which is adapted to prevent the spontaneous unscrewing of said shaft.
  • a plurality of conventional-type bearings 25 is interposed between the bell-shaped element 2 and the shaft 9.
  • the shaft 9 has, at its free end, a seat 26 for the insertion of a hub supporting pivot 27.
  • pressurized fluid is fed, through one of the two ports 20 and 21, into one of the two cylinders 3 and 4, consequently producing the axial movement of one of the two pistons 6 and 7 and therefore of the rack 11 rigidly coupled thereto.
  • the rack 11 transmits a rotation to the pinion 10 and therefore to the shaft 9, which in turn causes the rotation of the hub supporting pivot 27, which is rigidly coupled thereto, through an angle which varies as a function of the axial movement of the rack 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Transmission Devices (AREA)
  • Hydraulic Motors (AREA)
EP98117594A 1997-11-20 1998-09-16 Dispositif rotatif à entraínement hydromécanique Withdrawn EP0918162A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO970213 1997-11-20
IT97MO000213A IT1297317B1 (it) 1997-11-20 1997-11-20 Gruppo rotante ad azionamento idromeccanico.

Publications (2)

Publication Number Publication Date
EP0918162A2 true EP0918162A2 (fr) 1999-05-26
EP0918162A3 EP0918162A3 (fr) 2000-03-22

Family

ID=11386466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98117594A Withdrawn EP0918162A3 (fr) 1997-11-20 1998-09-16 Dispositif rotatif à entraínement hydromécanique

Country Status (2)

Country Link
EP (1) EP0918162A3 (fr)
IT (1) IT1297317B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536956A (zh) * 2012-02-16 2012-07-04 长治清华机械厂 随车起重机回转油缸
CN106321547A (zh) * 2016-08-19 2017-01-11 桂林福冈新材料有限公司 一种稳定式的摆动气缸及方法
CN106351911A (zh) * 2016-08-19 2017-01-25 桂林福冈新材料有限公司 一种活塞式摆动气缸及方法
CN108128350A (zh) * 2017-12-20 2018-06-08 徐州重型机械有限公司 一种转向悬架油缸及其悬架转向系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB826460A (en) * 1958-07-14 1960-01-06 Steiner Carl Fluid pressure motor
US3494205A (en) * 1968-04-29 1970-02-10 Hydra Power Inc Rotary cylinder
US4487111A (en) * 1980-09-04 1984-12-11 Worcester Controls Corporation Apparatus for generating reciprocatory motion
DE9014487U1 (de) * 1990-10-19 1991-05-02 Alfa Laval Flow GmbH, 40549 Düsseldorf Im Gehäuse eines Druckraumes drehbar gelagerte Welle
WO1994008836A1 (fr) * 1992-10-15 1994-04-28 Bendix Espana S.A. Direction assistee a haute performance
US5323690A (en) * 1993-03-05 1994-06-28 Sims James O Fluid actuator assembly for imparting rotational movement to a boom

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536956A (zh) * 2012-02-16 2012-07-04 长治清华机械厂 随车起重机回转油缸
CN106321547A (zh) * 2016-08-19 2017-01-11 桂林福冈新材料有限公司 一种稳定式的摆动气缸及方法
CN106351911A (zh) * 2016-08-19 2017-01-25 桂林福冈新材料有限公司 一种活塞式摆动气缸及方法
CN108128350A (zh) * 2017-12-20 2018-06-08 徐州重型机械有限公司 一种转向悬架油缸及其悬架转向系统

Also Published As

Publication number Publication date
ITMO970213A1 (it) 1999-05-20
EP0918162A3 (fr) 2000-03-22
IT1297317B1 (it) 1999-09-01
ITMO970213A0 (it) 1997-11-20

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