GB950060A - Improvements in or relating to ram-type actuating mechanisms - Google Patents

Improvements in or relating to ram-type actuating mechanisms

Info

Publication number
GB950060A
GB950060A GB2163459A GB2163459A GB950060A GB 950060 A GB950060 A GB 950060A GB 2163459 A GB2163459 A GB 2163459A GB 2163459 A GB2163459 A GB 2163459A GB 950060 A GB950060 A GB 950060A
Authority
GB
United Kingdom
Prior art keywords
piston
valve
pressure
fluid
port
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
GB2163459A
Inventor
Alfred William Thomas
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.)
Plessey Co Ltd
Original Assignee
Plessey 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
Priority to DEP25216A priority Critical patent/DE1235145B/en
Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB2163459A priority patent/GB950060A/en
Publication of GB950060A publication Critical patent/GB950060A/en
Expired 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
    • B28C7/08—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors by means of scrapers or skips
    • B28C7/0894—Parts, e.g. winches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/007—Reciprocating-piston liquid engines with single cylinder, double-acting piston
    • F03C1/0073—Reciprocating-piston liquid engines with single cylinder, double-acting piston one side of the double-acting piston being always under the influence of the liquid under pressure
    • F03C1/0076—Reciprocating-piston liquid engines with single cylinder, double-acting piston one side of the double-acting piston being always under the influence of the liquid under pressure the liquid under pressure being continuously delivered to one cylinder chamber through a valve in the piston for actuating the return stroke

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Dispersion Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)
  • Actuator (AREA)

Abstract

950,060. Fluid-pressure apparatus. PLESSEY CO. Ltd. June 10, 1960 [June 24, 1959], No. 21634/59. Heading F1P. A fluid-operated actuator comprises a piston 1 which at the end of a relatively-long stroke is automatically reciprocated over a relativelyshort part of its total available stroke. The piston is, on one side, connected to an exhaust port 8, and, on the other side, connected by an inlet port 5 to a source of fluid pressure. The fluid pressure moves the piston 1 to the left and also acts on the end of a valve 10 which may be carried by the piston or the cylinder and is urged to a position opening a port 12 so that the fluid pressure aids a spring 19 to retain a valve 15 in a position closing a passage 16, 17, 18 leading from one side of the piston to the other. Towards the end of the stroke of the piston to the left, the piston may abut a buffer spring 9 and a rod 20 on the valve 10 engages the end cover 7 of the actuator to move the valve past the port 12 until the latter is open to the left-hand side of the piston. The pressure acting on the left-hand end of the valve 15 drops and the pressure from the source moves the valve 15 to open the passage 16, 17, 18. The resulting drop in pressure on the right-hand side of the piston permits the spring 9 or the load moved by the actuator, which may be the hopper of a cement mixer, to move the piston to the right until the fluid pressure from the source acts to move the valve 10 to its original position thus again reversing the direction of movement of the piston. The speed of the piston is controlled by the pressure of the fluid source or a metering device in the port 5 and the length of the to- and-fro movement at the end of the stroke of the piston determined by the length of the valve 10.
GB2163459A 1959-06-24 1959-06-24 Improvements in or relating to ram-type actuating mechanisms Expired GB950060A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEP25216A DE1235145B (en) 1959-06-24 Actuating device with pressure medium motor, in particular for hydraulic lifting and tilting devices
GB2163459A GB950060A (en) 1959-06-24 1959-06-24 Improvements in or relating to ram-type actuating mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2163459A GB950060A (en) 1959-06-24 1959-06-24 Improvements in or relating to ram-type actuating mechanisms

Publications (1)

Publication Number Publication Date
GB950060A true GB950060A (en) 1964-02-19

Family

ID=10166231

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2163459A Expired GB950060A (en) 1959-06-24 1959-06-24 Improvements in or relating to ram-type actuating mechanisms

Country Status (2)

Country Link
DE (1) DE1235145B (en)
GB (1) GB950060A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104405715A (en) * 2014-10-16 2015-03-11 江苏海力达机电制造有限公司 Two-speed hydraulic cylinder and lifting mechanism applying same
CN104832488A (en) * 2014-12-12 2015-08-12 北汽福田汽车股份有限公司 Air cylinder and pump truck fatigue testing apparatus comprising same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966259C (en) * 1948-10-02 1957-07-18 Kaspar Klaus Truck, in particular load trailer with pneumatically operated tilting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104405715A (en) * 2014-10-16 2015-03-11 江苏海力达机电制造有限公司 Two-speed hydraulic cylinder and lifting mechanism applying same
CN104832488A (en) * 2014-12-12 2015-08-12 北汽福田汽车股份有限公司 Air cylinder and pump truck fatigue testing apparatus comprising same

Also Published As

Publication number Publication date
DE1235145B (en) 1967-02-23

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