EP0087816B1 - Dispositif de levage hydraulique - Google Patents

Dispositif de levage hydraulique Download PDF

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Publication number
EP0087816B1
EP0087816B1 EP83102029A EP83102029A EP0087816B1 EP 0087816 B1 EP0087816 B1 EP 0087816B1 EP 83102029 A EP83102029 A EP 83102029A EP 83102029 A EP83102029 A EP 83102029A EP 0087816 B1 EP0087816 B1 EP 0087816B1
Authority
EP
European Patent Office
Prior art keywords
chamber
geared pump
lifting device
pressure chamber
electric motor
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
Application number
EP83102029A
Other languages
German (de)
English (en)
Other versions
EP0087816A1 (fr
Inventor
Jesus Iciz Arbeloa
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.)
Individual
Original Assignee
Individual
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
Priority claimed from ES1982263602U external-priority patent/ES263602Y/es
Priority claimed from ES1983270376U external-priority patent/ES270376Y/es
Application filed by Individual filed Critical Individual
Priority to AT83102029T priority Critical patent/ATE24875T1/de
Publication of EP0087816A1 publication Critical patent/EP0087816A1/fr
Application granted granted Critical
Publication of EP0087816B1 publication Critical patent/EP0087816B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/44—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with self-contained electric driving motors

Definitions

  • the invention relates to a hydraulic lifting device according to the preamble of claim 1.
  • a hydraulic lifting device is known from US-A-1 690 181.
  • the electric motor and the gear pump are arranged in the axial extension of the lifting cylinder.
  • the invention has for its object to design a hydraulic lifting device according to the preamble of claim 1 so that there is a particularly compact design.
  • the hydraulic lifting device shown in the drawing contains, in a housing body 1, an electric motor 2, a gear pump 3 consisting of two meshing pinions and a lifting cylinder 10 'with a piston 11' slidably disposed therein.
  • the housing body 1 contains a chamber 27 for receiving the electric motor 2 and the gear pump 3 and two secondary chambers 30, 31 (cf. FIG. 2).
  • the lifting cylinder 10 ', the chamber 27 and the secondary chambers 30, 31 are arranged axially parallel (see. Fig. 2 and 3).
  • the electric motor 2 and the gear pump 3 are separated from one another by a transverse wall 28, the lower part of the chamber 27 receiving the gear pump 3 being connected to the two secondary chambers 30, 31 via openings 34, 37 and together with these two secondary chambers 30, 31 Storage space for the hydraulic fluid forms.
  • the upper region of the pressure chamber 12 'or of the lifting cylinder 10' is connected via an opening 36 to the secondary chamber 30, the lower region of which is connected via the above-mentioned opening 37 to the chamber 27 receiving the gear pump 3.
  • the electric motor 2 is a DC motor with an operating voltage of 12 V, so that a vehicle battery can be used as an energy source for the hydraulic lifting device.
  • the shaft 5 of the electric motor 2 is connected to the shaft 6 of the gear pump 3 via a coupling.
  • An annular seal 29 is provided on the circumference of the transverse wall 28.
  • a seal 24 is also located on the circumference of the piston 11 ', the piston rod 13' of which is guided through the cover 32 of the housing body 1 and carries a support head 19 for the object to be lifted.
  • a one-way valve is arranged in a collector 35 between the gear pump 3 and the pressure chamber 12 ', from which on the one hand a connecting line 23' leads to the pressure chamber 12 'and from which on the other hand a return line 39 leads to the chamber 27 receiving the gear pump 3.
  • a manually operated return valve 38 is arranged in this return line 39.
  • the line leading from the gear pump 3 to the collector 35 is labeled 40.
  • the return valve 38 is operated by hand. This creates a connection between the collector 35 and the return line 39, so that oil from the pressure chamber 12 'can flow back into the chamber 27 via the connecting line 23'. As a result, the piston 11 'drops.

Claims (2)

1. Dispositif hydraulique de levage comprenant:
a) un cylindre de levage (10') dans lequel coulisse un piston (11'),
b) un volume (27, 30, 31) de réserve de liquide sous pression,
c) une pompe à engrenages (3) se composant de deux pignons engrenant l'un avec l'autre et destinée à refouler le liquide sous pression se trouvant dans le volume de réserve (27, 30, 31) vers la chambre de compression (12') du cylindre de levage (10') qui est délimitée par le piston (11') .
d) un moteur électrique (2) de commande de la pompe à engrenages (3) qui est couplée directement à ce moteur,

caractérisé par les particularités suivantes:
e) la chambre de compression (12') du cylindre de levage (10') est réalisée dans un corps de carter (1) dans lequel sont disposées par ailleurs d'une part une chambre (27) destinée à loger le moteur électrique (2) et la pompe à engrenages (3) et d'autre part deux chambres auxiliaires (30, 31) dont les axes sont parallèles à celui de ladite chambre (27);
f) une cloison transversale (28) sépare le moteur 1 électrique (2) et la pompe à engrenage (3), la partie inférieure de la chambre (27) qui loge la pompe (3) communiquant par des trous (34, 37) avec les deux chambres auxiliaires (30, 31) avec lesquelles elle forme le volume de reserve du liquide sous pression;
g) la partie supérieure de la chambre de compression (12') communique par un trou (36) avec l'une des chambres auxiliaires (30) dont la partie inférieure est raccordée à la chambre (27) qui loge la pompe (3).
2. Dispositif hydraulique de levage selon la revendication 1, caractérisé en ce qu'un clapet unidirectionnel est disposé, entre la pompe à engrenages (3) et la chambre de compression (12'), à l'intérieur d'un collecteur (35) duquel une canalisation de reflux (39) mène à la chambre (27) qui loge la pompe (3), une soupape de retour (38) manoeuvrable à la main étant disposée dans cette canalisation de reflux (39).
EP83102029A 1982-03-02 1983-03-02 Dispositif de levage hydraulique Expired EP0087816B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83102029T ATE24875T1 (de) 1982-03-02 1983-03-02 Hydraulische hubvorrichtung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ES263602U 1982-03-02
ES1982263602U ES263602Y (es) 1982-03-02 1982-03-02 Gato electrohidraulico.
ES270376U 1983-02-16
ES1983270376U ES270376Y (es) 1983-02-16 1983-02-16 Nuevo gato electrohidraulico.

Publications (2)

Publication Number Publication Date
EP0087816A1 EP0087816A1 (fr) 1983-09-07
EP0087816B1 true EP0087816B1 (fr) 1987-01-14

Family

ID=26155503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102029A Expired EP0087816B1 (fr) 1982-03-02 1983-03-02 Dispositif de levage hydraulique

Country Status (6)

Country Link
US (1) US4667932A (fr)
EP (1) EP0087816B1 (fr)
BR (1) BR8300997A (fr)
CA (1) CA1202614A (fr)
DE (1) DE3369109D1 (fr)
MX (1) MX152865A (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2743047B1 (fr) * 1995-12-27 1998-02-20 Renault Vehicules Ind Dispositif de basculement d'une cabine supportee par un chassis
DE10106714A1 (de) * 2001-02-14 2002-08-22 Bosch Gmbh Robert Hubzylindereinheit
US6719099B2 (en) 2002-05-13 2004-04-13 Inventio Ag Integral elevator hydraulic power unit
ITRM20030007A1 (it) * 2003-01-10 2004-07-11 Otis Elevator Co Dispositivo di sollevamento a pistone, in particolare
DE202005005598U1 (de) * 2005-04-08 2005-06-09 Atrium Enterprises Gmbh Hubeinheit
US20090045380A1 (en) * 2007-08-13 2009-02-19 Mark Aiken Lift stand
US9073516B2 (en) * 2009-01-22 2015-07-07 Lippert Components Manufacturing Inc. Leveling jack for vehicle
EP2343223B1 (fr) * 2010-01-06 2016-05-04 Lippert Components Manufacturing, Inc. Système de mise à niveau pour véhicule
US8991890B2 (en) 2011-10-26 2015-03-31 Lippert Components Manufacturing, Inc. Slide-out room system having wall-mounted drive mechanisms
US8840164B2 (en) 2011-10-26 2014-09-23 Lippert Components Manufacturing, Inc. Slide-out room system having wall-mounted drive mechanisms
CN103072920A (zh) * 2013-01-05 2013-05-01 常熟通润汽车零部件股份有限公司 承载及运送车辆部件的油压升降设备
US10336584B2 (en) 2015-02-24 2019-07-02 Larry R. DeBattiste Lifting and transporting system
CN109437040A (zh) * 2018-12-27 2019-03-08 宁波市奉化区南方机械制造有限公司 一种齿轮式液压千斤顶
CN109775603A (zh) * 2019-03-25 2019-05-21 南通科技职业学院 便携式汽车液压千斤顶
CN113148892A (zh) * 2021-05-13 2021-07-23 上海航空机械有限公司 电动液压千斤顶及同步升降控制系统

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1353244A (en) * 1917-06-18 1920-09-21 Cora A Joerns Hydraulic hoist
US1546997A (en) * 1924-04-26 1925-07-21 William A Reschke Motor-driven portable oil-transfer pump
US1690181A (en) * 1924-05-12 1928-11-06 American Hoist & Derrick Co Hydraulic hoist
GB322588A (en) * 1928-10-15 1929-12-12 Tangyes Ltd Improvements in telescopic lifting-jacks
US1858117A (en) * 1930-06-16 1932-05-10 Siepp Fred Piston operated snap switch
US1969408A (en) * 1932-02-01 1934-08-07 Beece Corp Inc Car lifting device
US2034605A (en) * 1935-05-13 1936-03-17 Carman Clifford Hydraulic jack
US2293071A (en) * 1940-08-03 1942-08-18 Jr Otto Morgensen Multiple ram hydraulic jack
US2333530A (en) * 1942-04-25 1943-11-02 Hydraulic Dev Corp Inc Hydraulic system
US2364741A (en) * 1942-11-26 1944-12-12 St Paul Hydraulic Hoist Compan Telescopic jack structure
FR920424A (fr) * 1945-10-01 1947-04-08 Vérin hydro-électrique
DE932157C (de) * 1946-04-18 1955-08-25 Jean Louis Gratzmuller Hydraulische Hebevorrichtung
US2485240A (en) * 1946-06-10 1949-10-18 Carlton L Jackson Reversible variable-speed rotary pump and motor hydraulic transmission
FR1134942A (fr) * 1955-10-25 1957-04-19 Cie Gen Equip Aeronautique Transformateur de mouvement
US3022901A (en) * 1958-09-29 1962-02-27 James L Fisher Hoist for microphone dolly and the like

Also Published As

Publication number Publication date
DE3369109D1 (en) 1987-02-19
MX152865A (es) 1986-06-23
CA1202614A (fr) 1986-04-01
EP0087816A1 (fr) 1983-09-07
US4667932A (en) 1987-05-26
BR8300997A (pt) 1983-11-16

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