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 instabilityInfo
- 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- Withdrawn
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.
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)
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 |
-
1974
- 1974-02-06 FR FR7404022A patent/FR2259778A1/en not_active Withdrawn
Cited By (2)
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 |