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FR2309459A1 - Excavation grab with hydraulic actuation - has rope actuated pump supplying hydraulic liquid to jaw actuating cylinders - Google Patents

Excavation grab with hydraulic actuation - has rope actuated pump supplying hydraulic liquid to jaw actuating cylinders

Info

Publication number
FR2309459A1
FR2309459A1 FR7517685A FR7517685A FR2309459A1 FR 2309459 A1 FR2309459 A1 FR 2309459A1 FR 7517685 A FR7517685 A FR 7517685A FR 7517685 A FR7517685 A FR 7517685A FR 2309459 A1 FR2309459 A1 FR 2309459A1
Authority
FR
France
Prior art keywords
grab
actuating cylinders
actuated pump
hydraulic
pump supplying
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
FR7517685A
Other languages
French (fr)
Other versions
FR2309459B1 (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.)
Bilfinger SE
Original Assignee
Bilfinger und Berger Bau AG
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 Bilfinger und Berger Bau AG filed Critical Bilfinger und Berger Bau AG
Publication of FR2309459A1 publication Critical patent/FR2309459A1/en
Application granted granted Critical
Publication of FR2309459B1 publication Critical patent/FR2309459B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/14—Grabs opened or closed by driving motors thereon
    • B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/47—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor with grab buckets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

The hydraulically actuated grab is suspended on ropes and it is used for excavation purposes. The hydraulic actuator of the grab is held in the grab housing for grab opening and closing. The rope system with two ropes is used for actuating the hydraulic pump. The grab housing has a drive wheel which is connected to the hydraulic pump. The drive wheel forms a pulley for the chain. The ends of this chain are connected to the ends of two lifting ropes so that when they are actuated the drive pulley is rotated for driving of the hydraulic pump. The grab can be held at the end of a telescopic vertical support.
FR7517685A 1975-04-29 1975-06-06 Excavation grab with hydraulic actuation - has rope actuated pump supplying hydraulic liquid to jaw actuating cylinders Granted FR2309459A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752518997 DE2518997B1 (en) 1975-04-29 1975-04-29 HYDRAULICALLY OPERATED GRIPPER HANGED ON A CABLE

Publications (2)

Publication Number Publication Date
FR2309459A1 true FR2309459A1 (en) 1976-11-26
FR2309459B1 FR2309459B1 (en) 1978-02-03

Family

ID=5945285

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7517685A Granted FR2309459A1 (en) 1975-04-29 1975-06-06 Excavation grab with hydraulic actuation - has rope actuated pump supplying hydraulic liquid to jaw actuating cylinders

Country Status (2)

Country Link
DE (1) DE2518997B1 (en)
FR (1) FR2309459A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113845015A (en) * 2021-09-05 2021-12-28 中建三局第一建设工程有限责任公司 Earthwork hoisting system and method for foundation pit bottom manual hole digging pile

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091978A1 (en) * 1982-04-20 1983-10-26 Peiner Maschinen- und Schraubenwerke AG A two shells one cable underwater grab
FR2649966B1 (en) * 1989-07-18 1991-09-27 Potain Sa MOTORIZED LOAD ROTATING DEVICE, SELF-POWERED, FOR CABLE LIFTING APPARATUS
WO2006120581A2 (en) * 2005-04-29 2006-11-16 Nelson Alvarez Arzayus Digger for piles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113845015A (en) * 2021-09-05 2021-12-28 中建三局第一建设工程有限责任公司 Earthwork hoisting system and method for foundation pit bottom manual hole digging pile

Also Published As

Publication number Publication date
FR2309459B1 (en) 1978-02-03
DE2518997B1 (en) 1976-04-29

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse