ES457838A1 - Perfeccionamientos introducidos en una grua. - Google Patents
Perfeccionamientos introducidos en una grua.Info
- Publication number
- ES457838A1 ES457838A1 ES457838A ES457838A ES457838A1 ES 457838 A1 ES457838 A1 ES 457838A1 ES 457838 A ES457838 A ES 457838A ES 457838 A ES457838 A ES 457838A ES 457838 A1 ES457838 A1 ES 457838A1
- Authority
- ES
- Spain
- Prior art keywords
- float valve
- float
- valve
- boom
- crane
- 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
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
- B66C23/18—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 specially adapted for use in particular purposes
- B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/42—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with jibs of adjustable configuration, e.g. foldable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Fluid-Pressure Circuits (AREA)
- Jib Cranes (AREA)
Abstract
Perfeccionamientos introducidos en una grúa que tiene medios portadores, medios de aguilón, medios de cilindro hidráulico para controlar la elevación de los medios de aguilón y medios de válvula de retención de carga para los medios de cilindro hidráulico con el fin de evitar la pérdida accidental de presión de accionamiento, medios para permitir que los medios de aguilón floten durante el transporte de la grúa entre lugares de trabajo, comprendiendo estos medios citados en último lugar.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/694,832 US4039085A (en) | 1976-06-10 | 1976-06-10 | Crane with a pivoted boom and a float valve therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
ES457838A1 true ES457838A1 (es) | 1978-07-16 |
Family
ID=24790442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES457838A Expired ES457838A1 (es) | 1976-06-10 | 1977-04-15 | Perfeccionamientos introducidos en una grua. |
Country Status (2)
Country | Link |
---|---|
US (1) | US4039085A (es) |
ES (1) | ES457838A1 (es) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI53282C (fi) * | 1976-04-23 | 1978-04-10 | Rauma Repola Oy | Anordning foer aendring av axelvikter vid lyftkrankombinationfordon |
US4170246A (en) * | 1977-05-23 | 1979-10-09 | Sta-Rite Industries, Inc. | Pilot operator valve |
FR2409225A1 (fr) * | 1977-11-21 | 1979-06-15 | Creusot Loire | Perfectionnement aux grues telescopiques |
US4367673A (en) * | 1981-01-09 | 1983-01-11 | Dresser Industries, Inc. | System and method for controlling the elevation of a boom hoist device |
CA1213300A (en) * | 1983-03-17 | 1986-10-28 | Larry J. Oliphant | Means to reduce oscillatory deflection of vehicle |
JPH0662269B2 (ja) * | 1989-04-21 | 1994-08-17 | 株式会社神戸製鋼所 | 移動式クレーンの変位抑制装置 |
JPH0639317B2 (ja) * | 1989-09-09 | 1994-05-25 | 株式会社神戸製鋼所 | 移動式クレーンの変位抑制機構 |
JPH0815998B2 (ja) * | 1989-10-14 | 1996-02-21 | 株式会社神戸製鋼所 | ホイール式クレーンの振動抑制装置 |
US5391041A (en) * | 1993-01-06 | 1995-02-21 | New Flyer Industries Limited | Hydraulically operated bus ramp mechanism |
US6481202B1 (en) * | 1997-04-16 | 2002-11-19 | Manitowoc Crane Companies, Inc. | Hydraulic system for boom hoist cylinder crane |
US9889895B1 (en) * | 2015-01-28 | 2018-02-13 | Hammer Haag Trailers, Llc | Movable crane dolly |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1214066A (fr) * | 1959-01-21 | 1960-04-06 | Hebezeugwerk Sebnitz Veb | Dispositif hydraulique pour le relevage du mât et l'inclinaison de la flèche des grues pivotantes à tour |
US3083837A (en) * | 1961-01-31 | 1963-04-02 | Thew Shovel Co | Crane |
US3426916A (en) * | 1967-06-29 | 1969-02-11 | Bucyrus Erie Co | Boom retracting machinery |
US3613508A (en) * | 1970-07-27 | 1971-10-19 | Cessna Aircraft Co | Hydraulic valve |
US3908515A (en) * | 1973-09-10 | 1975-09-30 | Caterpillar Tractor Co | Hydraulic circuit with selectively actuatable float control |
US3924656A (en) * | 1974-04-26 | 1975-12-09 | Deere & Co | Direction control valve having float mode |
-
1976
- 1976-06-10 US US05/694,832 patent/US4039085A/en not_active Expired - Lifetime
-
1977
- 1977-04-15 ES ES457838A patent/ES457838A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US4039085A (en) | 1977-08-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19981103 |