GB1377881A - Leak-proofing systems for hydraulic lifting devices - Google Patents

Leak-proofing systems for hydraulic lifting devices

Info

Publication number
GB1377881A
GB1377881A GB928373A GB928373A GB1377881A GB 1377881 A GB1377881 A GB 1377881A GB 928373 A GB928373 A GB 928373A GB 928373 A GB928373 A GB 928373A GB 1377881 A GB1377881 A GB 1377881A
Authority
GB
United Kingdom
Prior art keywords
lines
leak
hydraulic lifting
lifting devices
balls
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
GB928373A
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.)
Gebr Hofmann GmbH and Co KG Maschinenfabrik
Original Assignee
Gebr Hofmann GmbH and Co KG Maschinenfabrik
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 Gebr Hofmann GmbH and Co KG Maschinenfabrik filed Critical Gebr Hofmann GmbH and Co KG Maschinenfabrik
Publication of GB1377881A publication Critical patent/GB1377881A/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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/16—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks
    • B66F7/20—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks by several jacks with means for maintaining the platforms horizontal during movement
    • 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
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22—Synchronisation of the movement of two or more servomotors

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)
  • Fluid-Pressure Circuits (AREA)

Abstract

1377881 Preventing leaks in hydraulic circuits HOFMANN GmbH Gebr [trading as HOFMANN KG MASCHINENFABRIK Gebr] 26 Feb 1973 [9 March 1972] 9283/73 Heading F1P In a circuit in which a pair of lifting rams 1, 1', Fig. 1, are connected in series for synchronous movement by a pair of lines 8, 8', the latter are connected to the rams by junction pieces 9, Fig. 2, each of which includes a valve comprising a free ball 16. If a leak occurs in one of the lines 8, 8' a drop in pressure results in the leaking line and this causes the balls to move to seal one of the end-faces 13, 14 of the lines. The balls are preferably resilient e.g. of plastics material.
GB928373A 1972-03-09 1973-02-26 Leak-proofing systems for hydraulic lifting devices Expired GB1377881A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2211447 1972-03-09

Publications (1)

Publication Number Publication Date
GB1377881A true GB1377881A (en) 1974-12-18

Family

ID=5838436

Family Applications (1)

Application Number Title Priority Date Filing Date
GB928373A Expired GB1377881A (en) 1972-03-09 1973-02-26 Leak-proofing systems for hydraulic lifting devices

Country Status (3)

Country Link
JP (1) JPS5237553B2 (en)
FR (1) FR2175058B3 (en)
GB (1) GB1377881A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113295333A (en) * 2021-05-12 2021-08-24 张伟峰 New energy automobile honeycomb chassis detects strutting arrangement and detecting system thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54172294U (en) * 1978-05-26 1979-12-05
JPS56158832U (en) * 1980-04-24 1981-11-26
JPS6172240U (en) * 1984-10-15 1986-05-16
GB2165815B (en) * 1984-10-19 1987-10-14 Didsbury Engineering Co Ltd Load-handling apparatus
JPH0725993B2 (en) * 1988-10-03 1995-03-22 日立化成工業株式会社 Epoxy resin composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113295333A (en) * 2021-05-12 2021-08-24 张伟峰 New energy automobile honeycomb chassis detects strutting arrangement and detecting system thereof
CN113295333B (en) * 2021-05-12 2024-01-30 广东宇豪新材料科技有限公司 New energy automobile honeycomb chassis detects strutting arrangement and detecting system thereof

Also Published As

Publication number Publication date
FR2175058B3 (en) 1976-03-05
JPS5237553B2 (en) 1977-09-22
FR2175058A1 (en) 1973-10-19
JPS496380A (en) 1974-01-21

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Legal Events

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