GB1199847A - Improvements in or relating to Actuators for Gear Boxes - Google Patents

Improvements in or relating to Actuators for Gear Boxes

Info

Publication number
GB1199847A
GB1199847A GB3177868A GB3177868A GB1199847A GB 1199847 A GB1199847 A GB 1199847A GB 3177868 A GB3177868 A GB 3177868A GB 3177868 A GB3177868 A GB 3177868A GB 1199847 A GB1199847 A GB 1199847A
Authority
GB
United Kingdom
Prior art keywords
port
piston
gear
cylinder
pressure
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
GB3177868A
Inventor
Wilbur Mills Page
Ralph Coupland
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 Automotive UK Ltd
Original Assignee
Clayton Dewandre Co Ltd
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 Clayton Dewandre Co Ltd filed Critical Clayton Dewandre Co Ltd
Priority to GB3177868A priority Critical patent/GB1199847A/en
Publication of GB1199847A publication Critical patent/GB1199847A/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
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
    • 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
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/121—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions
    • F15B11/123—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions by means of actuators with fluid-operated stops
    • 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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
    • 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
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
    • F16H2061/307—Actuators with three or more defined positions, e.g. three position servos

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

1,199,847. Change-speed control. CLAYTON DEWANDRE CO. Ltd. 3 July, 1969 [3 July, 1968], No. 31778/68. Heading F2D. A four-position compound piston-and-cylinder type pneumatic servomotor for use in the gear shift mechanism of Specification 1,199,846 comprises an outer cylinder 4 having three ports 1, 2, 3 and in which an inner cylinder 5, closed at one end, is reciprocably mounted, the inner cylinder 5 in turn containing a reciprocably mounted piston 8 the piston-rod 10 of which is attached at 17 to a gear selector in an associated gear-box (not shown). In operation, the third port 3 is constantly supplied with fluid pressure such that for selection of 1st gear the ports 1 and 2 are cut off from the fluid pressure supply whereby the piston 8 is initially moved, by pressure at port 2 passing through slots 18 of the inner cylinder 5, against a stop 19 on the inner cylinder 5, after which the piston 8 and cylinder 5 are jointly moved by the port 3 pressure against the end 20 of the outer cylinder 4 at which position 1st gear is selected. Selection of 2nd is effected by connecting port 2 to the fluid pressure supply whereby pressure enters a groove 6, formed in the exterior or interior of the inner or outer cylinders 5, 4, respectively, and passes through a port 24 into a chamber 25 to move piston 8 against a circlip 26 in the inner cylinder 5. Selection of 3rd is effected by additionally connecting port 1 to pressure, whereby the cylinder 5 and piston 8 are jointly moved against the opposite end of the outer cylinder 4 as illustrated in the drawing, the fluid from the second port 2 maintaining the piston 8 against the circlip 26. Selection of 4th is effected by cutting off the fluid supply from port 2 whilst maintaining the supply to port 1 whereby the fluid supply from port 3 moves the piston 8 against the stop 19 in the inner cylinders 5. In use with the six forward speeds and reverse of the shift mechanism of Specification 1,199,846, one such servomotor as above is arranged to position the gear selector in any one of four positions, i.e. between 1st and 2nd, 3rd and 4th, 5th and 6th or opposite the reverse gear, and a second servomotor is arranged to move the gear selector to engage any one of each pair of gears on the single reverse gear.
GB3177868A 1968-07-03 1968-07-03 Improvements in or relating to Actuators for Gear Boxes Expired GB1199847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3177868A GB1199847A (en) 1968-07-03 1968-07-03 Improvements in or relating to Actuators for Gear Boxes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3177868A GB1199847A (en) 1968-07-03 1968-07-03 Improvements in or relating to Actuators for Gear Boxes

Publications (1)

Publication Number Publication Date
GB1199847A true GB1199847A (en) 1970-07-22

Family

ID=10328272

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3177868A Expired GB1199847A (en) 1968-07-03 1968-07-03 Improvements in or relating to Actuators for Gear Boxes

Country Status (1)

Country Link
GB (1) GB1199847A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2124071A1 (en) * 1971-02-03 1972-09-22 Applic Mach Motrices
DE3213758A1 (en) * 1981-04-16 1983-01-27 Autóipari Kutató Intézet, Budapest Pneumatic three-position shift drive, especially for shifting the stages of gearboxes
DE3118583A1 (en) * 1981-05-11 1983-02-10 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover THREE-POSITION GEAR CYLINDER
WO1985005154A1 (en) * 1984-05-04 1985-11-21 Peter Herrmann Multiple travel jack
DE3837777A1 (en) * 1988-11-08 1990-05-10 Kloeckner Humboldt Deutz Ag HYDRAULIC GEARBOX
EP0740090A2 (en) * 1995-04-26 1996-10-30 Scania Cv Aktiebolag Arrangement for gear change operation
WO2011157462A1 (en) * 2010-06-14 2011-12-22 Sms Siemag Ag Piston-cylinder unit in the form of a switchable stepped cylinder
WO2018027194A3 (en) * 2016-08-05 2018-06-07 Kamran Eftekhari Shahroudi Multi-chamber rotary piston actuator
US10563677B2 (en) 2016-12-21 2020-02-18 Woodward, Inc. Butterfly rotary piston type actuator
US10954973B2 (en) 2017-07-14 2021-03-23 Woodward, Inc. Unsupported piston with moving seal carrier
CN113700853A (en) * 2021-09-07 2021-11-26 潍柴雷沃重工股份有限公司 Tractor synchronizer gear shifting oil cylinder, gear shifting method and tractor

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2124071A1 (en) * 1971-02-03 1972-09-22 Applic Mach Motrices
DE3213758A1 (en) * 1981-04-16 1983-01-27 Autóipari Kutató Intézet, Budapest Pneumatic three-position shift drive, especially for shifting the stages of gearboxes
DE3118583A1 (en) * 1981-05-11 1983-02-10 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover THREE-POSITION GEAR CYLINDER
WO1985005154A1 (en) * 1984-05-04 1985-11-21 Peter Herrmann Multiple travel jack
DE3837777A1 (en) * 1988-11-08 1990-05-10 Kloeckner Humboldt Deutz Ag HYDRAULIC GEARBOX
EP0740090A3 (en) * 1995-04-26 1997-12-29 Scania Cv Aktiebolag Arrangement for gear change operation
EP0740090A2 (en) * 1995-04-26 1996-10-30 Scania Cv Aktiebolag Arrangement for gear change operation
WO2011157462A1 (en) * 2010-06-14 2011-12-22 Sms Siemag Ag Piston-cylinder unit in the form of a switchable stepped cylinder
US11280356B2 (en) 2016-08-05 2022-03-22 Woodward, Inc. Multi-axis rotary piston actuator
WO2018027194A3 (en) * 2016-08-05 2018-06-07 Kamran Eftekhari Shahroudi Multi-chamber rotary piston actuator
US10273661B2 (en) 2016-08-05 2019-04-30 Woodward, Inc. Multi-chamber rotary piston actuator
US10655303B2 (en) 2016-08-05 2020-05-19 Woodward, Inc. Multi-axis rotary piston actuator
US10883522B2 (en) 2016-08-05 2021-01-05 Woodward. Inc. Multi-chamber rotary piston actuator
US11391305B2 (en) 2016-08-05 2022-07-19 Woodward, Inc. Multi-chamber rotary piston actuator
US10563677B2 (en) 2016-12-21 2020-02-18 Woodward, Inc. Butterfly rotary piston type actuator
US10935054B2 (en) 2016-12-21 2021-03-02 Woodward, Inc. Butterfly rotary piston type actuator
US10954973B2 (en) 2017-07-14 2021-03-23 Woodward, Inc. Unsupported piston with moving seal carrier
US11512719B2 (en) 2017-07-14 2022-11-29 Woodward, Inc. Unsupported piston with moving seal carrier
CN113700853A (en) * 2021-09-07 2021-11-26 潍柴雷沃重工股份有限公司 Tractor synchronizer gear shifting oil cylinder, gear shifting method and tractor
CN113700853B (en) * 2021-09-07 2023-02-17 潍柴雷沃智慧农业科技股份有限公司 Tractor synchronizer gear shifting oil cylinder, gear shifting method and tractor

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees