EP1249376A2 - Stabilisierungstütze für ein Lastentransportfahrzeug - Google Patents

Stabilisierungstütze für ein Lastentransportfahrzeug Download PDF

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Publication number
EP1249376A2
EP1249376A2 EP02007464A EP02007464A EP1249376A2 EP 1249376 A2 EP1249376 A2 EP 1249376A2 EP 02007464 A EP02007464 A EP 02007464A EP 02007464 A EP02007464 A EP 02007464A EP 1249376 A2 EP1249376 A2 EP 1249376A2
Authority
EP
European Patent Office
Prior art keywords
linking
jack
pivot
rotor
upturning
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Withdrawn
Application number
EP02007464A
Other languages
English (en)
French (fr)
Other versions
EP1249376A3 (de
Inventor
Giuseppe Noris
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.)
FASSI GRU IDRAULICHE SpA
Original Assignee
FASSI GRU IDRAULICHE SpA
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
Application filed by FASSI GRU IDRAULICHE SpA filed Critical FASSI GRU IDRAULICHE SpA
Publication of EP1249376A2 publication Critical patent/EP1249376A2/de
Publication of EP1249376A3 publication Critical patent/EP1249376A3/de
Withdrawn legal-status Critical Current

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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
    • B66C23/72—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

Definitions

  • a preliminary step of stabilization of the lorry is required, which consists in lifting all or part of the wheels of the lorry by means of telescopic jack arms. These are usually carried at the ends of a couple of supporting crossbeams which are rigidly connected to the frame of the lorry.
  • the crossbeams can also be telescopically extended, in order to widen the rectangle at whose corners said jack arms are arranged.
  • the rotating torque of the jack arms is obtained by means of ropes or chains, which are engaged by pulleys or toothed sprocket wheels and are subjected to the pull of a hydraulic jack which can be the jack arm itself or a distinct, dedicated jack.
  • a main object of the present invention is to overcome said drawbacks of the known upturning devices and, more particularly, it ss an important object of the invention to provide a device having a small size and at the same time being capable of generating a strong operating torque, adequate to easily effect rotation and upturning of the respective jack arm.
  • Another object of the invention is to provide a jack arm upturning device as specified, which has a size not substantially exceeding the maximum size of the jack arm itself during both the operative and the rest conditions.
  • said torque generator is hydraulic and consists of a semi-rotary alternative actuator (or lifter) contained in the cavity of the linking pivot.
  • the actuator comprises a cylindrical jacket -with a separating partition defining opposed hydraulic chambers- which is fastened to the linking head of the jack and acts as an angular driving rotor for said head, and further comprises a stationary bladed shaft that is sealingly arranged in the jacket.
  • the stationary bladed shaft acting as a reaction stator for generating the torque, is provided with a prismatic end projecting from the actuator jacket and lockingly engaging a housing and locking seat that is provided in said linking plate.
  • a jack arm 1 is rotationally connected, through the intermediary of a linking plate 2 provided with an upturning device 3, to one end of a supporting crossbeam 4 with respect to which jack 1 can take both an operative position (drawn in solid lines in Fig. 1) and a rest position, e. g. a sub-vertical position drawn in dashed lines in Fig. 1, which is shifted of about 180° from the operative position.
  • operative position drawn in solid lines in Fig. 1
  • a rest position e. g. a sub-vertical position drawn in dashed lines in Fig. 1, which is shifted of about 180° from the operative position.
  • stops A1-A2 of plate 2 are defined by stops A1-A2 of plate 2.
  • Jack 1 comprises a cylindrical housing 5 provided with a telescopic rod 6 connected to a double-action piston, not shown in the drawing, which is sealingly movable within housing 5 and is subjected to the action of a pressurized hydraulic fluid which is fed into and discharged from housing 5, through ducts not shown.
  • Rod 6 of jack 1 carries a bearing foot 7 at its lower end and jack housing 5 carries an integral linking head 8 at its upper end.
  • Linking head 8 consists of a cylindrical stub having its axis at right angles to the axis of housing 5 and rigidly connected to housing 5 or integral with it.
  • Linking head 8 is rotationally mounted, with the intermediary of rolling balls 9 for axial restraint, on a cylindrical hollow pivot 10 carried by plate 2, and preferably integral with it.
  • a torque generator 11 is arranged in the cavity of pivot 10, which torque generator, when energized, is capable of giving rise to angular displacements of housing 5 of jack 1 with respect to linking plate 2 in any of both directions, so that the jack is brought from its rest position to its operative position and vice versa.
  • torque generator 11 has a rotor that is integral with linking head 8 of jack housing 5, and a stator that is coaxial and internal to the rotor and is torsionally connected to linking plate 2.
  • torque generator 11 is a hydraulic arrangement consisting of a semi-rotary alternative actuator (so called lifter) having a cylindrical jacket 12, which acts as a rotor and is provided with a bottom 12' and a separating partition 13 defining opposed hydraulic chambers 14-14' which are capable of receiving pressurized hydraulic fluid.
  • Hydraulic chambers 14-14' extend on opposite sides of partition 13 and are defined between the partition and a blade 15 of a stationary bladed shaft 16 acting as a stator.
  • the hydraulic fluid is supplied to chamber 14 or alternatively to chamber 14', depending on the direction of rotation selected for jacket 12, through respective ducts 17-17' selectively acting for supply and discharge.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Jib Cranes (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
EP02007464A 2001-04-10 2002-03-30 Stabilisierungstütze für ein Lastentransportfahrzeug Withdrawn EP1249376A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO010339 2001-04-10
IT2001TO000339A ITTO20010339A1 (it) 2001-04-10 2001-04-10 Dispositivo di ribaltamento dei martinetti stabilizzatori per la riduzione in sagoma degli autocarri dotati di gru di sollevamento.

Publications (2)

Publication Number Publication Date
EP1249376A2 true EP1249376A2 (de) 2002-10-16
EP1249376A3 EP1249376A3 (de) 2004-09-15

Family

ID=11458771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02007464A Withdrawn EP1249376A3 (de) 2001-04-10 2002-03-30 Stabilisierungstütze für ein Lastentransportfahrzeug

Country Status (2)

Country Link
EP (1) EP1249376A3 (de)
IT (1) ITTO20010339A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019031568A1 (ja) * 2017-08-09 2019-02-14 株式会社タダノ アウトリガ装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994004399A1 (en) 1992-08-24 1994-03-03 Hiab Ab Arrangement in supporting legs
US5398969A (en) 1991-12-13 1995-03-21 Palfinger Aktiengesellschaft Device for pivoting a truck stabilizer jack upwards
WO1996034782A1 (en) 1995-05-03 1996-11-07 Hiab Forest Ab Support leg

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1613268A (en) * 1925-10-10 1927-01-04 Eisler Henry Gustav Hydraulic jacking system
US2194594A (en) * 1937-03-26 1940-03-26 Halley S Automatic Hydraulic J Folding automatic hydraulic jack
US3125352A (en) * 1961-02-15 1964-03-17 Collapsible strut

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5398969A (en) 1991-12-13 1995-03-21 Palfinger Aktiengesellschaft Device for pivoting a truck stabilizer jack upwards
WO1994004399A1 (en) 1992-08-24 1994-03-03 Hiab Ab Arrangement in supporting legs
WO1996034782A1 (en) 1995-05-03 1996-11-07 Hiab Forest Ab Support leg

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019031568A1 (ja) * 2017-08-09 2019-02-14 株式会社タダノ アウトリガ装置

Also Published As

Publication number Publication date
ITTO20010339A0 (it) 2001-04-10
EP1249376A3 (de) 2004-09-15
ITTO20010339A1 (it) 2002-10-10

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