NO861761L - HYDRAULIC TURNING CRANE. - Google Patents
HYDRAULIC TURNING CRANE.Info
- Publication number
- NO861761L NO861761L NO861761A NO861761A NO861761L NO 861761 L NO861761 L NO 861761L NO 861761 A NO861761 A NO 861761A NO 861761 A NO861761 A NO 861761A NO 861761 L NO861761 L NO 861761L
- Authority
- NO
- Norway
- Prior art keywords
- crane
- valve
- aperture
- wind
- hydraulic
- Prior art date
Links
- 230000000694 effects Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000006378 damage 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
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
- B66C23/86—Slewing gear hydraulically actuated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Hydraulisk dreiesystem for svingkran, som i det vesentlige er bygget opp med hydraulisk motor (A), blende. (B), to-veis ventil (C) og styreventil (). Blenden (B) slipper gjennom olje når kretstilførselen på kranen brytes og tillater derved automatisk at kra-nens bom plasserer seg selv i retning av vinden. Ved normal drift kan shuntvirkningen til blenden (B) hvis ønsket bli opphevet ved hjelp av ventilen (C), som styres fra manøvrerings-organet i tilfelle en stillstandsbrem-sing er ønsket ved stopp eller kraftig start av dreiebevegelsen.Hydraulic swivel system for swing crane, which is essentially built with hydraulic motor (A), diaphragm. (B), two-way valve (C) and control valve (). The aperture (B) lets oil through when the circuit supply to the crane is interrupted, thereby automatically allowing the crane boom to position itself in the direction of the wind. During normal operation, the shunt action of the aperture (B) can, if desired, be canceled by means of the valve (C), which is controlled from the actuator in case a standstill braking is desired when stopping or vigorously starting the rotational movement.
Description
Oppfinnelsen vedrører et hydraulisk dreiesystem, i hvil-ket en shunt er lagt over tilførselsventilen til den hydrauliske motoren. The invention relates to a hydraulic turning system, in which a shunt is placed over the supply valve to the hydraulic motor.
Vanligvis er svingkraner utstyrt med en utligger, med hvilken det frembringes en stor rotasjons- treghetsfaktor og et eksentrisk vindangrepsområde. Ved svingkraner for bygg-industrien skal kranen, når den skal bli forlatt, være i stand til å svinge fritt i vinden. Da det ved disse typer kraner foreligger et krav om det såkalte prinsipp for "død mann", hvor alle bevegelser skal stoppes, når aktiveringssignaler eller elektrisk strømtilførsel ikke finner sted, er det for fri stilling krevet en manuell operasjon med dreiesystemet, noe som i mange tilfeller glemmes, med ødeleggelser som et resultat. Generally, jib cranes are equipped with a jib, with which a large rotational inertia factor and an eccentric wind attack area are produced. In the case of jib cranes for the construction industry, the crane, when it is to be abandoned, must be able to swing freely in the wind. Since with these types of cranes there is a requirement for the so-called "dead man principle", where all movements must be stopped, when activation signals or electrical power supply do not take place, a manual operation with the turning system is required for free position, which in many cases are forgotten, with destruction as a result.
Ved den foreliggende konstruksjonen, ifølge oppfinnelsen, er det tatt hensyn til at kranen ved svikt for kretsen kan dreie bort fra vinden selv om med kontrollert hastighet. In the present construction, according to the invention, account has been taken of the fact that the crane can turn away from the wind if the circuit fails, even if at a controlled speed.
På grunn av dens egenskap, som består i økende evneBecause of its characteristic, which consists in increasing ability
til oppbremsing ved øket hastighet forhindrer systemet ifølge oppfinnelsen situasjoner hvor kranen starter å dreie seg ukon-trollert, når sirka halvdelen av arbeidsområdet for kranen ligger under virkning fra vinden. for braking at increased speed, the system according to the invention prevents situations where the crane starts to turn uncontrolled, when approximately half of the crane's working area is under the influence of the wind.
Ved normal drift av kranen er det ved hjelp av manøv-rer ingsorganet mulig å oppheve shuntvirkningen, enten hvis det er ønsket større kraft på maskineriet eller det er ønsket å la motoren virke som en bremse for å stå stille. During normal operation of the crane, it is possible to cancel the shunt effect by means of the operating device, either if greater power is desired on the machinery or it is desired to let the motor act as a brake to stand still.
Oppfinnelsen skal i det følgende bli beskrevet med hen-visning til tegningen, hvor Fig. 1 et skjematisk diagram av oppfinnelsen i uaktivert stilling. Fig. 1 viser et skjematisk diagram ifølge oppfinnelsen, set i uaktivert kretsløs situasjon, hvor den hydrauliske motor A kan sirkulere olje gjennom to-veis ventil C og en blende In the following, the invention will be described with reference to the drawing, where Fig. 1 is a schematic diagram of the invention in an inactive position. Fig. 1 shows a schematic diagram according to the invention, seen in an unactivated circuitless situation, where the hydraulic motor A can circulate oil through two-way valve C and a diaphragm
B, når kranen skal være i stand til å plassere seg selv i retning av vinden. B, when the crane must be able to position itself in the direction of the wind.
Ved drift blir en styreventil D aktivert for å starte dreiebevegelsen, i samsvar med, om all olje er ønsket til motoren A for kraftig start eller for en mere dempet start med trykk- og strømningsreduksjon gjennom blenden B, ventilen C respektivt kan bli aktivert eller stå i den viste stilling. In operation, a control valve D is activated to start the turning movement, according to whether all the oil is desired to the engine A for a strong start or for a more subdued start with pressure and flow reduction through the orifice B, the valve C can respectively be activated or left in the position shown.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK424984A DK151102C (en) | 1984-09-06 | 1984-09-06 | HYDRAULIC CROWD DRIVE |
Publications (1)
Publication Number | Publication Date |
---|---|
NO861761L true NO861761L (en) | 1986-05-02 |
Family
ID=8131737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO861761A NO861761L (en) | 1984-09-06 | 1986-05-02 | HYDRAULIC TURNING CRANE. |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0192750B1 (en) |
JP (1) | JPS62500376A (en) |
AT (1) | ATA902885A (en) |
CH (1) | CH669183A5 (en) |
DE (1) | DE3590423T1 (en) |
DK (1) | DK151102C (en) |
FI (1) | FI861871A0 (en) |
GB (1) | GB2177675B (en) |
NL (1) | NL8520291A (en) |
NO (1) | NO861761L (en) |
SE (1) | SE465266B (en) |
WO (1) | WO1986001494A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE508992C2 (en) * | 1991-05-22 | 1998-11-23 | Einar Karlsson | Device for damping oscillations in a hydraulic load crane |
DE102017117505B4 (en) * | 2017-08-02 | 2020-10-22 | Manitowoc Crane Group France Sas | Closed hydraulic circuit crane |
CN109469666A (en) * | 2018-10-17 | 2019-03-15 | 江苏谷登工程机械装备有限公司 | A kind of horizontal directional drilling machine hydraulic control system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT301802B (en) * | 1970-04-21 | 1972-09-25 | Hans Kuenz Fa | Trolley for crane systems |
US4013174A (en) * | 1974-11-11 | 1977-03-22 | The Manitowoc Company, Inc. | Swing drive with automatic shut-down control |
-
1984
- 1984-09-06 DK DK424984A patent/DK151102C/en not_active IP Right Cessation
-
1985
- 1985-09-06 GB GB08610936A patent/GB2177675B/en not_active Expired
- 1985-09-06 CH CH191486A patent/CH669183A5/en not_active IP Right Cessation
- 1985-09-06 JP JP50415385A patent/JPS62500376A/en active Pending
- 1985-09-06 EP EP19850904609 patent/EP0192750B1/en not_active Expired
- 1985-09-06 AT AT902885A patent/ATA902885A/en not_active Application Discontinuation
- 1985-09-06 WO PCT/DK1985/000086 patent/WO1986001494A1/en active IP Right Grant
- 1985-09-06 DE DE19853590423 patent/DE3590423T1/en not_active Withdrawn
- 1985-09-06 NL NL8520291A patent/NL8520291A/en unknown
-
1986
- 1986-05-02 NO NO861761A patent/NO861761L/en unknown
- 1986-05-05 FI FI861871A patent/FI861871A0/en not_active Application Discontinuation
- 1986-05-05 SE SE8602046A patent/SE465266B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE3590423T1 (en) | 1986-10-09 |
EP0192750B1 (en) | 1992-12-02 |
DK151102B (en) | 1987-11-02 |
GB2177675A (en) | 1987-01-28 |
GB8610936D0 (en) | 1986-06-11 |
JPS62500376A (en) | 1987-02-19 |
ATA902885A (en) | 1993-08-15 |
DK424984D0 (en) | 1984-09-06 |
EP0192750A1 (en) | 1986-09-03 |
SE8602046L (en) | 1986-05-05 |
SE465266B (en) | 1991-08-19 |
SE8602046D0 (en) | 1986-05-05 |
FI861871A (en) | 1986-05-05 |
GB2177675B (en) | 1988-05-18 |
FI861871A0 (en) | 1986-05-05 |
WO1986001494A1 (en) | 1986-03-13 |
DK424984A (en) | 1986-03-07 |
CH669183A5 (en) | 1989-02-28 |
DK151102C (en) | 1988-03-21 |
NL8520291A (en) | 1986-08-01 |
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