GB1318830A - Two-speed drive - Google Patents

Two-speed drive

Info

Publication number
GB1318830A
GB1318830A GB1318830DA GB1318830A GB 1318830 A GB1318830 A GB 1318830A GB 1318830D A GB1318830D A GB 1318830DA GB 1318830 A GB1318830 A GB 1318830A
Authority
GB
United Kingdom
Prior art keywords
worm
motor
drives
contacts
drive
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
Application number
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 GB1318830A publication Critical patent/GB1318830A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • 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
    • F16H—GEARING
    • F16H2718/00—Mechanisms for speed-change of planetary gearing, the speed change control being dependent on function parameters of the gearing
    • F16H2718/18—Control dependent on torque
    • F16H2718/20—Control dependent on torque only the toothed wheels remain engaged
    • F16H2718/26—Control dependent on torque only the toothed wheels remain engaged the control being electric

Abstract

1318830 Two speed drive; valves G N KLOTSVOG 19 Aug 1971 38882/71 Headings F2D and F2V A two speed drive for a valve closure comprises an electric motor drive through a worm and worm wheel to provide a high speed at low torque and a drive through an epicyclic train, which may be by a separate electric motor, to provide a high torque slow speed drive to complete closure of the valve. A motor 2 drives a shaft 4, Fig. 2, on which a worm 6 is splined and resiliently held by a spring 7. A worm wheel 9 through a planetary union 10, Fig. 1, and gear-wheel 11 drives an output shaft 13 without an epicyclic gear effect. A second motor 3, Fig. 1, drives an eccentric shaft 15 on which is freely mounted the planet 10 to provide a drive 15, 10a, 9a, 10b, 11a to the gear 11, when the worm-wheel 9 is held. In use the motor 2 drives the output shaft 13 at high speed through the worm 6 and Worm wheel 9 until the torque rises sufficiently to overcome the spring 7 allowing the worm 6 to move towards a washer 8 closing contacts 16 which switch off the motor 2 and switch on the motor 3 which then drives the output shaft 13 with high torque to complete closure of the valve at which time the torque is sufficient to move the worm 6 further to release contacts 16 and close contacts 17 stopping the motor 3 and restarting the motor 2 to return the worm 6 to its starting position. A reverse procedure applies for opening the valve using contacts 18 and 19. A known manual stand-by regulator using contacts 22 is provided.
GB1318830D 1971-08-19 1971-08-19 Two-speed drive Expired GB1318830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3888271 1971-08-19

Publications (1)

Publication Number Publication Date
GB1318830A true GB1318830A (en) 1973-05-31

Family

ID=10406249

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1318830D Expired GB1318830A (en) 1971-08-19 1971-08-19 Two-speed drive

Country Status (1)

Country Link
GB (1) GB1318830A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2280003A (en) * 1993-07-13 1995-01-18 Fmc Corp Quick shift two speed torque reducer for a gate valve
GB2484810A (en) * 2010-10-21 2012-04-25 Vetco Gray Controls Inc Selective torque operator for a valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2280003A (en) * 1993-07-13 1995-01-18 Fmc Corp Quick shift two speed torque reducer for a gate valve
GB2484810A (en) * 2010-10-21 2012-04-25 Vetco Gray Controls Inc Selective torque operator for a valve
US8807528B2 (en) 2010-10-21 2014-08-19 Vetco Gray Inc. Selective torque operator for a valve
GB2484810B (en) * 2010-10-21 2016-01-06 Vetco Gray Controls Inc Selective torque operator for a valve

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee