FR2303978A1 - Hydraulically operated ram - with passages in piston rod for fluid to downstream receiver - Google Patents

Hydraulically operated ram - with passages in piston rod for fluid to downstream receiver

Info

Publication number
FR2303978A1
FR2303978A1 FR7606600A FR7606600A FR2303978A1 FR 2303978 A1 FR2303978 A1 FR 2303978A1 FR 7606600 A FR7606600 A FR 7606600A FR 7606600 A FR7606600 A FR 7606600A FR 2303978 A1 FR2303978 A1 FR 2303978A1
Authority
FR
France
Prior art keywords
piston
rod
fluid
return
passages
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.)
Granted
Application number
FR7606600A
Other languages
French (fr)
Other versions
FR2303978B3 (en
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
Application filed by Individual filed Critical Individual
Publication of FR2303978A1 publication Critical patent/FR2303978A1/en
Application granted granted Critical
Publication of FR2303978B3 publication Critical patent/FR2303978B3/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1457—Piston rods

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The ram comprises a cylinder and a piston/rod assembly (9, 10). In this assembly there are ports and chambers (C, 16), through which the hydraulic fluid can flow from inside the ram to a receiver downstream. The cylinder and piston rod can form a return chamber where the fluid circulates for the piston return stroke, and with a port to which a return pipe is connected. The assembly of piston and rod has an internal tube forming one return passage between rod and tube, and a chamber inside for the fluid flow from the variable-volume chamber between piston head and cylinder end to the receiver via the piston crown. Ports are provided in the rod to connect the return passage to return chamber and receiver.
FR7606600A 1975-03-11 1976-03-02 Hydraulically operated ram - with passages in piston rod for fluid to downstream receiver Granted FR2303978A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2110775A IT1034148B (en) 1975-03-11 1975-03-11 HYDRAULIC CYLINDER WITH FLUID TRANSMISSION TO A USER

Publications (2)

Publication Number Publication Date
FR2303978A1 true FR2303978A1 (en) 1976-10-08
FR2303978B3 FR2303978B3 (en) 1978-12-15

Family

ID=11176836

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7606600A Granted FR2303978A1 (en) 1975-03-11 1976-03-02 Hydraulically operated ram - with passages in piston rod for fluid to downstream receiver

Country Status (7)

Country Link
BE (1) BE839132A (en)
DE (1) DE2606631A1 (en)
DK (1) DK105276A (en)
FR (1) FR2303978A1 (en)
IT (1) IT1034148B (en)
LU (1) LU74365A1 (en)
NL (1) NL7601838A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3002998A1 (en) * 1980-01-29 1981-07-30 Maschinenfabrik Glückauf Beukenberg GmbH & Co, 4650 Gelsenkirchen Hydraulic positioner for mining machinery - has auxiliary hydraulic connections in parts with relative motion to eliminate flexible hoses
DE3744628A1 (en) * 1987-12-31 1989-07-13 Fraunhofer Ges Forschung Piston/cylinder unit having a piston fixed against rotation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024069388A1 (en) * 2022-09-27 2024-04-04 Mdb Srl Radio-controlled vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3002998A1 (en) * 1980-01-29 1981-07-30 Maschinenfabrik Glückauf Beukenberg GmbH & Co, 4650 Gelsenkirchen Hydraulic positioner for mining machinery - has auxiliary hydraulic connections in parts with relative motion to eliminate flexible hoses
DE3744628A1 (en) * 1987-12-31 1989-07-13 Fraunhofer Ges Forschung Piston/cylinder unit having a piston fixed against rotation

Also Published As

Publication number Publication date
LU74365A1 (en) 1976-08-13
FR2303978B3 (en) 1978-12-15
DK105276A (en) 1976-09-12
NL7601838A (en) 1976-09-14
IT1034148B (en) 1979-09-10
DE2606631A1 (en) 1976-09-23
BE839132A (en) 1976-07-01

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