PL132332B1 - Method of and apparatus for protecting a crane against overloads - Google Patents
Method of and apparatus for protecting a crane against overloads Download PDFInfo
- Publication number
- PL132332B1 PL132332B1 PL22458980A PL22458980A PL132332B1 PL 132332 B1 PL132332 B1 PL 132332B1 PL 22458980 A PL22458980 A PL 22458980A PL 22458980 A PL22458980 A PL 22458980A PL 132332 B1 PL132332 B1 PL 132332B1
- Authority
- PL
- Poland
- Prior art keywords
- comparator
- output
- value
- derivative
- input
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 21
- 230000001960 triggered effect Effects 0.000 claims description 13
- 230000004224 protection Effects 0.000 description 34
- 238000010586 diagram Methods 0.000 description 17
- 239000003990 capacitor Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 230000005669 field effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- B66C23/905—Devices for indicating or limiting lifting moment electrical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Emergency Protection Circuit Devices (AREA)
- Manipulator (AREA)
- Measurement Of Force In General (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUAA000929 HU177529B (en) | 1979-05-29 | 1979-05-29 | Method for preventing over load of lifting machines and arrangement for implementing this |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL224589A1 PL224589A1 (cs) | 1981-02-27 |
| PL132332B1 true PL132332B1 (en) | 1985-02-28 |
Family
ID=10993064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL22458980A PL132332B1 (en) | 1979-05-29 | 1980-05-29 | Method of and apparatus for protecting a crane against overloads |
Country Status (7)
| Country | Link |
|---|---|
| CS (1) | CS230570B2 (cs) |
| DD (1) | DD151142A5 (cs) |
| DE (1) | DE3020480A1 (cs) |
| HU (1) | HU177529B (cs) |
| PL (1) | PL132332B1 (cs) |
| RO (1) | RO78207A (cs) |
| SU (1) | SU952098A3 (cs) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2677629B1 (fr) * | 1991-06-17 | 1998-02-20 | Senergy Sarl | Procede de controle de la charge pour un engin de levage et dispositif pour sa mise en óoeuvre. |
| DE19628364C1 (de) * | 1996-07-13 | 1998-03-05 | Matthias Mueller | Grenzwertschalter |
| DE19645811C2 (de) * | 1996-11-07 | 1998-10-01 | Stahl R Foerdertech Gmbh | Steuerungsanordnung zur Notabschaltung |
| DE19645812C1 (de) * | 1996-11-07 | 1998-02-26 | Stahl R Foerdertech Gmbh | Steuerungsanordnung mit Erkennung des Gewichts der Last |
| DE102012010760A1 (de) | 2012-05-31 | 2013-12-05 | Wolffkran Holding Ag | Elektrohydraulische Vorrichtung mit Drehstromasynchronmotor zur Verstellung eines Ausleger |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1225832B (de) * | 1964-04-14 | 1966-09-29 | Siemens Ag | Elektrische Schutzeinrichtung gegen mechanische UEberlastung von Hebezeugen |
| US3993166A (en) * | 1975-04-29 | 1976-11-23 | Bofors America, Inc. | Overload signalling system for fork lift trucks and the like |
| DE2704992A1 (de) * | 1976-04-28 | 1977-11-17 | Munck Continental Sa | Ueberlastsicherung |
-
1979
- 1979-05-29 HU HUAA000929 patent/HU177529B/hu not_active IP Right Cessation
-
1980
- 1980-05-21 CS CS354880A patent/CS230570B2/cs unknown
- 1980-05-27 RO RO80101230A patent/RO78207A/ro unknown
- 1980-05-27 DD DD22139980A patent/DD151142A5/de unknown
- 1980-05-29 PL PL22458980A patent/PL132332B1/pl unknown
- 1980-05-29 SU SU802929301A patent/SU952098A3/ru active
- 1980-05-29 DE DE19803020480 patent/DE3020480A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DD151142A5 (de) | 1981-10-08 |
| SU952098A3 (ru) | 1982-08-15 |
| CS230570B2 (en) | 1984-08-13 |
| HU177529B (en) | 1981-11-28 |
| RO78207A (ro) | 1982-04-12 |
| DE3020480A1 (de) | 1980-12-11 |
| PL224589A1 (cs) | 1981-02-27 |
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