FR2259778A1 - Lifting or handling machine safety system - uses pressure in out rigger jack chambers to indicate approaching instability - Google Patents

Lifting or handling machine safety system - uses pressure in out rigger jack chambers to indicate approaching instability

Info

Publication number
FR2259778A1
FR2259778A1 FR7404022A FR7404022A FR2259778A1 FR 2259778 A1 FR2259778 A1 FR 2259778A1 FR 7404022 A FR7404022 A FR 7404022A FR 7404022 A FR7404022 A FR 7404022A FR 2259778 A1 FR2259778 A1 FR 2259778A1
Authority
FR
France
Prior art keywords
lifting
safety system
handling machine
machine safety
uses 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.)
Withdrawn
Application number
FR7404022A
Other languages
French (fr)
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.)
UGON PIERRE FR
Original Assignee
UGON PIERRE FR
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 UGON PIERRE FR filed Critical UGON PIERRE FR
Priority to FR7404022A priority Critical patent/FR2259778A1/en
Publication of FR2259778A1 publication Critical patent/FR2259778A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/78—Supports, e.g. outriggers, for mobile cranes
    • B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

The system is for machines equipped with outrigger jacks and incorporates gauges on each of the jack chambers indicating either the actual pressure or variations in it. Thus any likelihood of instability, and any fault in the fluid supply, is revealed to receiver units at a central point. An immediate alarm is then given, and/or any dangerous movement stopped. A permanent indication of the state of equilibrium of the machine is also provided. The pressure can be derived directly from the jack chamber, or from one of the slide-valve chambers.
FR7404022A 1974-02-06 1974-02-06 Lifting or handling machine safety system - uses pressure in out rigger jack chambers to indicate approaching instability Withdrawn FR2259778A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7404022A FR2259778A1 (en) 1974-02-06 1974-02-06 Lifting or handling machine safety system - uses pressure in out rigger jack chambers to indicate approaching instability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7404022A FR2259778A1 (en) 1974-02-06 1974-02-06 Lifting or handling machine safety system - uses pressure in out rigger jack chambers to indicate approaching instability

Publications (1)

Publication Number Publication Date
FR2259778A1 true FR2259778A1 (en) 1975-08-29

Family

ID=9134577

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7404022A Withdrawn FR2259778A1 (en) 1974-02-06 1974-02-06 Lifting or handling machine safety system - uses pressure in out rigger jack chambers to indicate approaching instability

Country Status (1)

Country Link
FR (1) FR2259778A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482298A1 (en) * 1990-10-24 1992-04-29 Hydac Technology Gmbh Procedure and device for the execution of a levelling operation for a body, in particular a vehicle element
WO1998028219A1 (en) * 1996-12-24 1998-07-02 Schwing Gmbh Device with extension arm and extension arm support and safety device against tipping

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482298A1 (en) * 1990-10-24 1992-04-29 Hydac Technology Gmbh Procedure and device for the execution of a levelling operation for a body, in particular a vehicle element
WO1998028219A1 (en) * 1996-12-24 1998-07-02 Schwing Gmbh Device with extension arm and extension arm support and safety device against tipping

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Legal Events

Date Code Title Description
ST Notification of lapse