FR2450965A1 - Braking system for piston in double acting jack - comprises throttle valve to retard evacuation piston chamber and has two magnetic field switches to sense travel direction - Google Patents

Braking system for piston in double acting jack - comprises throttle valve to retard evacuation piston chamber and has two magnetic field switches to sense travel direction

Info

Publication number
FR2450965A1
FR2450965A1 FR8004925A FR8004925A FR2450965A1 FR 2450965 A1 FR2450965 A1 FR 2450965A1 FR 8004925 A FR8004925 A FR 8004925A FR 8004925 A FR8004925 A FR 8004925A FR 2450965 A1 FR2450965 A1 FR 2450965A1
Authority
FR
France
Prior art keywords
piston
braking system
magnetic field
throttle valve
double acting
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.)
Pending
Application number
FR8004925A
Other languages
French (fr)
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.)
Wabco Fahrzeugbremsen GmbH
Original Assignee
Wabco Fahrzeugbremsen GmbH
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 Wabco Fahrzeugbremsen GmbH filed Critical Wabco Fahrzeugbremsen GmbH
Publication of FR2450965A1 publication Critical patent/FR2450965A1/en
Pending 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/046—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed depending on the position of the working member
    • F15B11/048—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed depending on the position of the working member with deceleration control
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3052—Shuttle valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/3057—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having two valves, one for each port of a double-acting output member
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3138—Directional control characterised by the positions of the valve element the positions being discrete
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/31552—Directional control characterised by the connections of the valve or valves in the circuit being connected to an output member and a return line
    • F15B2211/31558—Directional control characterised by the connections of the valve or valves in the circuit being connected to an output member and a return line having a single output member
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31588—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and multiple output members
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41509—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a directional control valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41554—Flow control characterised by the connections of the flow control means in the circuit being connected to a return line and a directional control valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/421—Flow control characterised by the type of actuation mechanically
    • F15B2211/424—Flow control characterised by the type of actuation mechanically actuated by an output member of the circuit
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/426—Flow control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/755—Control of acceleration or deceleration of the output member

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Braking Arrangements (AREA)

Abstract

A braking system is used for the end of travel of a piston in a double acting jack. The jack systemis used to open or close automatic gates and the braking system slows down the operation at the end of travel to stop the gates slowly. A double actingjack (1) has a piston (2) coupled to a shaft (3). The two chambers (A, B) are connected by pipes (4, 5) and via electrovalves (6, 7) to a fluid under pressure (P). These valves are switched to supply fluid to the respective chamber and their outlets are connected by pipes (9, 10) containing fluid under pressure to an electrovalve (12) operated by two magnetic field switches (15, 16) which sense the direction of travel of the piston. A throttle valve (13) acts to slow down time taken for fluid to evacuates a chamber.
FR8004925A 1979-03-05 1980-03-05 Braking system for piston in double acting jack - comprises throttle valve to retard evacuation piston chamber and has two magnetic field switches to sense travel direction Pending FR2450965A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792908583 DE2908583A1 (en) 1979-03-05 1979-03-05 DEVICE FOR STOPPING THE WORKING PISTON OF A DOUBLE-ACTING WORK CYLINDER

Publications (1)

Publication Number Publication Date
FR2450965A1 true FR2450965A1 (en) 1980-10-03

Family

ID=6064566

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8004925A Pending FR2450965A1 (en) 1979-03-05 1980-03-05 Braking system for piston in double acting jack - comprises throttle valve to retard evacuation piston chamber and has two magnetic field switches to sense travel direction

Country Status (5)

Country Link
BE (1) BE882065A (en)
DE (1) DE2908583A1 (en)
FR (1) FR2450965A1 (en)
IT (1) IT1129208B (en)
NL (1) NL8001273A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578001A1 (en) * 1985-02-22 1986-08-29 Festo Kg CYLINDER-PISTON DEVICE
FR2641829A1 (en) * 1989-01-19 1990-07-20 Danfoss As SERVOMECHANISM CONTROLLED BY A FLUID
EP0675291A1 (en) * 1994-03-21 1995-10-04 MANNESMANN Aktiengesellschaft Fluidic or electric actuator with a control

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3104704C2 (en) * 1981-02-10 1994-07-21 Per Henrik Goesta Nystroem Servo device for regulating the position of a piston of a hydraulic cylinder
DE3110132A1 (en) * 1981-03-16 1982-09-23 Wabco Steuerungstechnik GmbH & Co, 3000 Hannover DEVICE FOR STOPPING THE WORKING PISTON OF A DOUBLE-ACTING WORK CYLINDER
DE3235015A1 (en) * 1982-09-22 1984-03-22 Danfoss A/S, 6430 Nordborg PNEUMATIC ACTUATOR
DE3246537A1 (en) * 1982-12-16 1984-06-20 Wabco Westinghouse Steuerungstechnik GmbH & Co, 3000 Hannover DEVICE FOR DETECTING AND CONTROLLING THE SPEED OF THE PISTON OF A WORK CYLINDER
DE3708989C2 (en) * 1987-03-19 1993-10-14 Festo Kg Control device for a piston displaceable in a double-acting cylinder
JPS63303204A (en) * 1987-05-30 1988-12-09 Smc Corp Speed reducer for air cylinder
IT1217518B (en) * 1988-05-06 1990-03-22 Domini Farrel Spa FEEDING DEVICE AND PROCEDURE, WITH LIFTING ENERGY RECOVERY, FOR PRESSING ACTUATORS
DE4234063C1 (en) * 1992-10-09 1994-03-10 Vickers Systems Gmbh Hydraulic cylinder electronic end-position damping system - senses piston position at ends of stroke using free-field, inductive, capacitive or cavity resonator detection, and varies hydraulic supply with controllable-cross=section choke
JP4186135B2 (en) * 1998-05-15 2008-11-26 Ｓｍｃ株式会社 Cylinder speed controller
US6295917B1 (en) * 1999-03-24 2001-10-02 Curt D. Richardson Lost motion cylinder
US6575186B2 (en) * 2001-01-16 2003-06-10 Chartered Semiconductor Manufacturing Ltd. Multiple speed slit valve controller
ES2203278B1 (en) * 2001-05-03 2005-05-16 Maria Antonia Bilbao Gonzalez PERFECTED INTERLOCK SYSTEM FOR THREE-WAY VALVES.
DE102010018317A1 (en) * 2010-04-27 2011-10-27 Wabco Gmbh valve means
KR102315374B1 (en) 2017-03-17 2021-10-21 두산공작기계 주식회사 Pneumatic control apparatus and pneumatic control method for auto door
US11519429B2 (en) * 2020-04-22 2022-12-06 Deere & Company Hydraulic system for baler implement gate

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437482A1 (en) * 1978-09-26 1980-04-25 Knorr Bremse Gmbh CONTROL DEVICE FOR PNEUMATICALLY OR MANUALLY CONTROLLED DOORS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437482A1 (en) * 1978-09-26 1980-04-25 Knorr Bremse Gmbh CONTROL DEVICE FOR PNEUMATICALLY OR MANUALLY CONTROLLED DOORS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578001A1 (en) * 1985-02-22 1986-08-29 Festo Kg CYLINDER-PISTON DEVICE
FR2641829A1 (en) * 1989-01-19 1990-07-20 Danfoss As SERVOMECHANISM CONTROLLED BY A FLUID
EP0675291A1 (en) * 1994-03-21 1995-10-04 MANNESMANN Aktiengesellschaft Fluidic or electric actuator with a control

Also Published As

Publication number Publication date
IT8067342A0 (en) 1980-03-04
BE882065A (en) 1980-07-01
IT1129208B (en) 1986-06-04
NL8001273A (en) 1980-09-09
DE2908583A1 (en) 1980-09-18

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