DE770185T1 - Universelles hydraulisches ventil - Google Patents

Universelles hydraulisches ventil

Info

Publication number
DE770185T1
DE770185T1 DE0770185T DE95917065T DE770185T1 DE 770185 T1 DE770185 T1 DE 770185T1 DE 0770185 T DE0770185 T DE 0770185T DE 95917065 T DE95917065 T DE 95917065T DE 770185 T1 DE770185 T1 DE 770185T1
Authority
DE
Germany
Prior art keywords
needle
seal
hydraulic valve
valve according
hydraulic
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
DE0770185T
Other languages
English (en)
Inventor
Leonard T. North Hollywood Ca 91605 Chapman
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.)
Leonard Studio Equipment Inc
Original Assignee
Leonard Studio Equipment Inc
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 Leonard Studio Equipment Inc filed Critical Leonard Studio Equipment Inc
Publication of DE770185T1 publication Critical patent/DE770185T1/de
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/048—Mobile camera platform
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F16M11/38—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by folding, e.g. pivoting or scissors tong mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
    • 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
    • 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
    • F15B2211/41527—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member 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
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/625—Accumulators
    • 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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7052—Single-acting 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/755—Control of acceleration or deceleration of the output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/04—Balancing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Lift Valve (AREA)
  • Braking Systems And Boosters (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Valve Device For Special Equipments (AREA)
  • Check Valves (AREA)

Claims (13)

DE/FPO 77n 1 Ansprüche
1. Hydroventil mit einem Gehäuse (12) und einer Nadel (3 0) im wesentlichen in einer Nadelbohrung (72) in dem Gehäuse, dadurch gekennzeichnet, daß
die Nadel (3 0) eine erste Dichtung (60) und eine zweite Dichtung (60) aufweist;
ein erster Sitz (52) der ersten Dichtung (60) zugewandt ist und ein zweiter Sitz (54) der zweiten Dichtung (60) zugewandt ist;
Einstellvorrichtungen (28) zum Einstellen des Abstands zwischen dem ersten Sitz (52) und der ersten Dichtung (60) vorgesehen sind;
eine Zuführöffnung (76) und eine Rückführöffnung (78) in dem Gehäuse mit der Nadelbohrung (72) verbunden sind; und ein Rückschlagventil (20, 22) den Rückfluß durch die Nadelbohrung (72) verhindert.
2. Hydroventil nach Anspruch 1, welches ferner eine zweite
0 Einstellvorrichtung (26) zum Einstellen des Abstands zwischen dem zweiten Sitz (54) und der zweiten Dichtung (60) aufweist.
3. Hydroventil nach Anspruch 1, welches ferner eine Lenkerverbindung (136) aufweist, welche an der Nadel (30) und an einem hydraulisch betätigten Element (140) angebracht ist.
4. Hydroventil nach Anspruch 1 oder 2, wobei die Einstellvorrichtung einen Knauf (28) aufweist, welcher in das Gehäuse (12) geschraubt und an dem ersten Sitz (52) befestigt ist.
5. Hydroventil nach Anspruch 1, wobei die Nadel (3 0) einen Mittelabschnitt (42) aufweist, und die erste und die zweite Dichtung (60) an einander entgegengesetzten Enden des 5 Mittelabschnitts (42) angeordnet sind.
6. Hydroventil nach Anspruch 1, wobei das Rückschlagventil {20, 22) zwischen der Zuführöffnung (76) und der
Rückführöffnung (78) angeordnet ist.
7. Hydroventil nach Anspruch 3, welches ferner eine Feder (56) zum Vorspannen der Nadel (3 0) und der Lenkerverbindung (13 6) aufweist.
8. Hydroventil nach Anspruch 1 oder 2, wobei die erste Dichtung (60) angepaßt ist, um durch den ersten Sitz (52) zu passen.
9. Hydroventil nach Anspruch 1 oder 2, wobei die Einstellvorrichtung einen ersten und einen zweiten Steuerknauf (26, 28) aufweist, welche in das Gehäuse (12) geschraubt sind.
10. Hydroventil nach Anspruch 1 oder 2, welches ferner auf der Nadel (30), benachbart zu der ersten Dichtung (60) einen ersten konischen Ring (64) aufweist, wobei der konische Ring eine Oberfläche aufweist, die einen Winkel von etwa 5-15° zu der Längsachse der Nadel bildet.
11. Hydroventil nach Anspruch 1 oder 2, wobei die erste Dichtung eine Weichstoffdichtung ist und einen Durchmesser hat, der geringfügig größer als der Bohrungsdurchmesser in dem ersten Sitz ist.
12. Hydroventil nach Anspruch 4, welches ferner an dem Knauf Farbringe (38) aufweist.
13. Hydroventil nach Anspruch 1 oder 2, wobei das Ventil an einem Kamerawagen (100) verwendet wird, welcher einen Wagenrahmen (104), einen schwenkbar an dem Rahmen (104) befestigten Wagenarm (154), ein mit dem Arm verbundenes hydraulisches Betätigungselement (140) und ein Hydrauliksystem (172, 148, 17 0, 150) zum Antreiben des hydraulischen Betätigungselements (14 0) aufweist, wobei das Ventil mit dem hydraulischen Betätigungselement (140) hydraulisch und mit dem Arm (154) mechanisch verbunden ist.
DE0770185T 1994-05-03 1995-04-26 Universelles hydraulisches ventil Pending DE770185T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/237,447 US5437216A (en) 1994-05-03 1994-05-03 Universal hydraulic valve
PCT/US1995/004822 WO1995030096A1 (en) 1994-05-03 1995-04-26 Universal hydraulic valve

Publications (1)

Publication Number Publication Date
DE770185T1 true DE770185T1 (de) 1997-09-11

Family

ID=22893757

Family Applications (2)

Application Number Title Priority Date Filing Date
DE0770185T Pending DE770185T1 (de) 1994-05-03 1995-04-26 Universelles hydraulisches ventil
DE69503049T Expired - Fee Related DE69503049T2 (de) 1994-05-03 1995-04-26 Universelles hydraulisches ventil

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69503049T Expired - Fee Related DE69503049T2 (de) 1994-05-03 1995-04-26 Universelles hydraulisches ventil

Country Status (8)

Country Link
US (2) US5437216A (de)
EP (1) EP0770185B1 (de)
AT (1) ATE167554T1 (de)
AU (1) AU678111B2 (de)
CA (1) CA2188801C (de)
DE (2) DE770185T1 (de)
MX (1) MX9605387A (de)
WO (1) WO1995030096A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5437216A (en) * 1994-05-03 1995-08-01 Leonard Studio Equipment, Inc. Universal hydraulic valve
DE4447543C2 (de) * 1994-06-28 1997-04-17 Daimler Benz Ag Servoventilanordnung
US5944285A (en) * 1997-06-19 1999-08-31 The Boeing Company Vent valve with pressure relief
US6493569B2 (en) * 2000-12-30 2002-12-10 Ge Medical Systems Global Technology Company, Llc Method and apparatus using post contrast-enhanced steady-state free precession in MR imaging
US6581509B1 (en) 2001-05-25 2003-06-24 Stephens Dynamics, Inc. Rotary cylinder assembly for a machine tool
US8579525B2 (en) 2009-08-06 2013-11-12 Chapman/Leonard Studio Equipment, Inc. Hydraulic stop valve for a camera crane
US8727318B2 (en) 2012-07-19 2014-05-20 Chapman/Leonard Studio Equipment, Inc. Hydraulic float down valve for a camera dolly or camera crane

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB693504A (en) * 1949-07-25 1953-07-01 Boulton Aircraft Ltd Improvements in and relating to servo systems
FR1153774A (fr) * 1955-06-10 1958-03-21 Servo-moteur à piston différentiel, notamment pour mécanismes de direction de véhicules automobiles
US2996047A (en) * 1959-01-09 1961-08-15 North American Aviation Inc Actuating means
US3398646A (en) * 1966-04-08 1968-08-27 Bell Aerospace Corp Lead signal generation apparatus for use in control systems
US3974742A (en) * 1974-10-31 1976-08-17 Caterpillar Tractor Co. Lock valve assembly
FR2321417A1 (fr) * 1975-08-21 1977-03-18 Dba Dispositif hydraulique d'assistance de direction de vehicule automobile
SE430183B (sv) * 1980-02-22 1983-10-24 Asea Ab Servocylinder med genomgaende kolvstang
US4325402A (en) * 1980-04-01 1982-04-20 Baker Cac, Inc. Bimodal, non-venting pneumatic relay
US4360187A (en) * 1981-06-19 1982-11-23 Chapman Leonard T Compact hoisting device
JPS5947573A (ja) * 1982-09-13 1984-03-17 Fuji Eng Kk 方向切換弁
US4738279A (en) * 1985-12-17 1988-04-19 Linde Aktiengesellschaft Multiway valves with load feedback
US4899097A (en) * 1986-10-02 1990-02-06 Chapman Leonard T Motorized tang drive system
US4716933A (en) * 1986-10-16 1988-01-05 J. I. Case Company Valve unit
JP2683244B2 (ja) * 1988-04-14 1997-11-26 株式会社ゼクセル 制御弁
US4854222A (en) * 1988-08-22 1989-08-08 Allied-Signal Inc. Load compensated servo system to control flow rate as a function of command
JP3141951B2 (ja) * 1991-02-15 2001-03-07 帝人製機株式会社 アクチュエータの中立位置復帰機構
US5437216A (en) * 1994-05-03 1995-08-01 Leonard Studio Equipment, Inc. Universal hydraulic valve

Also Published As

Publication number Publication date
AU678111B2 (en) 1997-05-15
DE69503049D1 (de) 1998-07-23
MX9605387A (es) 1997-12-31
CA2188801A1 (en) 1995-11-09
AU2389795A (en) 1995-11-29
EP0770185A4 (de) 1997-02-12
DE69503049T2 (de) 1998-12-03
US5437216A (en) 1995-08-01
WO1995030096A1 (en) 1995-11-09
EP0770185B1 (de) 1998-06-17
US5819634A (en) 1998-10-13
ATE167554T1 (de) 1998-07-15
CA2188801C (en) 2005-01-11
EP0770185A1 (de) 1997-05-02

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