GB1529881A - Hydraulic rams - Google Patents

Hydraulic rams

Info

Publication number
GB1529881A
GB1529881A GB7235/75A GB723575A GB1529881A GB 1529881 A GB1529881 A GB 1529881A GB 7235/75 A GB7235/75 A GB 7235/75A GB 723575 A GB723575 A GB 723575A GB 1529881 A GB1529881 A GB 1529881A
Authority
GB
United Kingdom
Prior art keywords
ram
tubes
hydraulic
tube
trunnions
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
GB7235/75A
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.)
Edbro Ltd
Original Assignee
Edbro 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 Edbro Ltd filed Critical Edbro Ltd
Priority to GB7235/75A priority Critical patent/GB1529881A/en
Priority to JP51005494A priority patent/JPS5196982A/ja
Priority to ZA760637A priority patent/ZA76637B/en
Priority to AU10853/76A priority patent/AU504892B2/en
Priority to CA245,299A priority patent/CA1034841A/en
Priority to IT48024/76A priority patent/IT1053965B/en
Priority to FR7604409A priority patent/FR2301714A1/en
Priority to NL7601705A priority patent/NL7601705A/en
Priority to DE19762606787 priority patent/DE2606787A1/en
Priority to BE164531A priority patent/BE838813A/en
Publication of GB1529881A publication Critical patent/GB1529881A/en
Expired 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
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/26—Adaptations or arrangements of pistons
    • B66F3/28—Adaptations or arrangements of pistons telescopic
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Actuator (AREA)

Abstract

1529881 Hydraulic ram EDBRO Ltd 19 Feb 1976 [20 Feb 1975] 7235/75 Heading F1D An hydraulic ram assembly comprises a plurality of co-axial telescopic ram tubes 10, 11, 12, 13, 14 and 15, Fig. 1, and restraining devices 20 associated with respective ram tubes, each restraining device comprising a groove 22, Fig. 2, in which the leading end of the associated ram tube is located. Each restraining device further comprises a screw threaded portion 21 provided with a buttress thread for engaging a corresponding screw thread formed adjacent the leading end of the associated ram tube. Seals 29 and 30 are provided and the smallest diameter ram tube 15 is connected to a casing 18 by means of a mounting head (17) Fig. 3 (not shown), and end-wall 19. The trailing ends of the ram tubes are provided with spring steel base rings (31), Fig. 4 (not shown), mounted in recesses formed in the inner surfaces of the tubes, for sliding engagement with adjacent annular abutments (32) mounted on the outer surfaces of the tubes. Hydraulic fluid may be introduced through an inlet 35 or alternatively the trailing ends of the ram tubes may extend into a hydraulic fluid reservoir when in the collapsed disposition, Fig. 5 (not shown) having a breather assembly. The ram may be mounted on a vehicle chassis by means of trunnions 37 and connected to a pivotally mounted body by trunnions 36 so that extension of the ram causes the body to pivot about an axis on the chassis.
GB7235/75A 1975-02-20 1975-02-20 Hydraulic rams Expired GB1529881A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
GB7235/75A GB1529881A (en) 1975-02-20 1975-02-20 Hydraulic rams
JP51005494A JPS5196982A (en) 1975-02-20 1976-01-22
ZA760637A ZA76637B (en) 1975-02-20 1976-02-04 Improvements relating to hydraulic ram assemblies
AU10853/76A AU504892B2 (en) 1975-02-20 1976-02-05 Telescopic ram
CA245,299A CA1034841A (en) 1975-02-20 1976-02-09 Hydraulic ram assemblies
IT48024/76A IT1053965B (en) 1975-02-20 1976-02-10 IMPROVEMENT IN HYDRAULIC JACKS
FR7604409A FR2301714A1 (en) 1975-02-20 1976-02-18 PERFECTED HYDRAULIC CYLINDER
NL7601705A NL7601705A (en) 1975-02-20 1976-02-19 HYDRAULIC WORK CYLINDER.
DE19762606787 DE2606787A1 (en) 1975-02-20 1976-02-19 HYDRAULIC LIFTING CYLINDER DEVICE
BE164531A BE838813A (en) 1975-02-20 1976-02-20 HYDRAULIC CYLINDER IMPROVEMENTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7235/75A GB1529881A (en) 1975-02-20 1975-02-20 Hydraulic rams

Publications (1)

Publication Number Publication Date
GB1529881A true GB1529881A (en) 1978-10-25

Family

ID=9829242

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7235/75A Expired GB1529881A (en) 1975-02-20 1975-02-20 Hydraulic rams

Country Status (10)

Country Link
JP (1) JPS5196982A (en)
AU (1) AU504892B2 (en)
BE (1) BE838813A (en)
CA (1) CA1034841A (en)
DE (1) DE2606787A1 (en)
FR (1) FR2301714A1 (en)
GB (1) GB1529881A (en)
IT (1) IT1053965B (en)
NL (1) NL7601705A (en)
ZA (1) ZA76637B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115899146A (en) * 2022-12-14 2023-04-04 华能莱芜发电有限公司 Detachable hydraulic damper dust keeper

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4339989A (en) * 1978-12-18 1982-07-20 Webster Raymond G Hydraulic rams
IT1126990B (en) * 1980-03-20 1986-05-21 Romanazzi Spa IMPROVEMENT IN TELESCOPIC JACKS WITH MULTIPLE DISPLACEMENTS, PARTICULARLY FOR TIPPING VEHICLE BOXES
CA2981849C (en) * 2015-04-10 2023-09-26 The Will-Burt Company Pneumatic non-locking low-profile telescoping masts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136221A (en) * 1961-10-27 1964-06-09 Phil Wood Ind Reciprocatory telescoping-piston hydraulic motor
US3417670A (en) * 1966-04-18 1968-12-24 Parker Hannifin Corp Hydraulic ram
FR2259296A1 (en) * 1974-01-29 1975-08-22 Protomatic Telescopic hydraulic jack made from standard tubes - has cold worked varying thickness tubes and standard sealing rings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115899146A (en) * 2022-12-14 2023-04-04 华能莱芜发电有限公司 Detachable hydraulic damper dust keeper

Also Published As

Publication number Publication date
JPS5196982A (en) 1976-08-25
DE2606787A1 (en) 1976-08-26
FR2301714A1 (en) 1976-09-17
AU1085376A (en) 1977-08-11
ZA76637B (en) 1977-02-23
CA1034841A (en) 1978-07-18
AU504892B2 (en) 1979-11-01
NL7601705A (en) 1976-08-24
IT1053965B (en) 1981-10-10
BE838813A (en) 1976-06-16
FR2301714B1 (en) 1981-02-13

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Legal Events

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