EP1386878B1 - Grappin hydraulique de briques avec des moyens pour des fonctions additionnelles - Google Patents

Grappin hydraulique de briques avec des moyens pour des fonctions additionnelles Download PDF

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Publication number
EP1386878B1
EP1386878B1 EP03077162A EP03077162A EP1386878B1 EP 1386878 B1 EP1386878 B1 EP 1386878B1 EP 03077162 A EP03077162 A EP 03077162A EP 03077162 A EP03077162 A EP 03077162A EP 1386878 B1 EP1386878 B1 EP 1386878B1
Authority
EP
European Patent Office
Prior art keywords
grab
hydraulic
slidable part
stone grab
clamp
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 - Lifetime
Application number
EP03077162A
Other languages
German (de)
English (en)
Other versions
EP1386878A1 (fr
Inventor
Joseph Jacobus Kennis
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 EP1386878A1 publication Critical patent/EP1386878A1/fr
Application granted granted Critical
Publication of EP1386878B1 publication Critical patent/EP1386878B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
    • B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
    • B66C1/445—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces motor actuated
    • B66C1/447—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces motor actuated by hydraulic or pneumatic motors

Definitions

  • the invention concerns a stone grab of the type where with a hydraulic cylinder a packet stones or such is clamped to be transported.
  • This type is especially used with hydraulic cranes.
  • the stone grab is adjustable.
  • a part is expandable where the adjustment is fixed with lock pins.
  • the invention contains a solution where with auxiliary cylinders the lock pins are operated where no extra hydraulic components have to be added to the crane or suspension.
  • An often used type grab has in the hydraulic rotator a connection for the supply and discharge conduit for the clamping cylinder. To operate the stone grab according to the invention the existing connections and operation valves can be used.
  • auxiliary cylinders To operate the auxiliary cylinders there is a slidable mechanism installed where conduits of the clamping cylinder are switched to one of the lock pins and after that served from the operator seat.
  • the width of the grab is set with the help of the clamping cylinder and after that the lock pin is reset after switching over.
  • the switching over is accomplished by placing the stone grab on the ground and lower the crane some centimetres after that.
  • the rotator will be disconnected and can rotate free by which the rotator operates the slidable part with a cam the switching valves.
  • By turning the rotator into the lifting position and lift the stone grab the clamping cylinder will be activated for clamping the packet stones and the stone grab is rotating fixed to the rotator.
  • Fig. 1 is with (1) the stone grab indicated.
  • Stone grab (1) is connected to the crane with swing (2) on rotator (3).
  • Stone grab (1) has near the suspension switching mechanism (4) in which are located the hydraulic valves (5) and (6).
  • the adjustment mechanism (7) is suspended by rods (8).
  • Clamping cylinder (9) is connected with clamping arms (10) which pivot around pivots (11).
  • In adjustment mechanism (7) are two lock pin cylinders (12) which are double acting and each is foreseen with two lock pins (13).
  • the adjustment mechanism consists of two hollow profiles (14) having inside draw bars (15) with borings (16). By adjusting the draw bars (15) the length can be adjusted.
  • the switching mechanism (4) is connected to slidable part (17) with suspension eye (18).
  • Slidable part (17) is foreseen with coupling plate (19).
  • Coupling plate (19) is oblong and is locked in the lifting position by plates (20) which have fitting notches.
  • Between suspension eye (18) and coupling plate (19) is a cylindric part (21) which permits axial movement and rotating in switching mechanism (4).
  • Cam (22) is connected to coupling plate (19) which can operate valves (5) and (6) on rotating slidable part (17).
  • Cam member (22) has such a position that in lifting position valves (5) and (6) are in point of departure.
  • Fig. 6 the hydraulic diagram is given.
  • Conduit (23) to press out cylinder (9) goes via valve (5) and valve (6) where in point of departure the connection is open.
  • the return conduit (24) is connected with the return conduits of lock pin cylinders (12).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Earth Drilling (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Claims (4)

  1. Grappin hydraulique de briques contenant une élément de rotation quelle fait possible de connecter le grappin vers une grue, le grappin contenant un mécanisme de changer à une mode de opération vers une autre mode de opération, les deux modes de opération fait l'usage d'une circuit hydraulique caractérisé par ce que le mécanisme de changer contenant une pièce glissante (17) contenant à son côté inférieur un élément de came (22), sudit pièce glissante étant glisser en relation d'un bôite du mécanisme de changement (4), et quant la pièce glissante est dans la position retiré, position dans laquelle est placé dans le carter le came active une ou plus de soupapes (5, 6) pour changer d'une mode pricipal vers une mode d'operation additional par pivoter de la pièce glissante (17).
  2. Grappin hydraulique de briques selon revendication 1 caractérisé en ce que la pièce glissante (17) est prévu avec un trou de suspension (18) et un tôle oblong (19) quelle dans la position retiré est relaché des cames dans tôle (20) dans lequel par pivoter la pièce glissante (17) l'element de came (22) active les uns ou plus soupapes (5, 6).
  3. Grappin hydraulique de briques selon revendication 1, ou 2 caractérisé en ce que le grappin de briques (1) est prévu avec un mécanisme ajustable de tirants (15) dans profiles creux (14) qui sont verrouillé avec des broches (13) quelle sont activé par cylindres (12).
  4. Grappin hydraulique de briques selon revendication 1, 2 ou 3 caractérisé en ce que en utiliseé la pièce glissante (17) est placé dans la position retiré par positioner le grappin de briques (1) sur le terrain et descendre la grue.
EP03077162A 2002-07-31 2003-07-10 Grappin hydraulique de briques avec des moyens pour des fonctions additionnelles Expired - Lifetime EP1386878B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1021187 2002-07-31
NL1021187A NL1021187C2 (nl) 2002-07-31 2002-07-31 Hydraulische steenklem met inschakelbare nevenfuncties.

Publications (2)

Publication Number Publication Date
EP1386878A1 EP1386878A1 (fr) 2004-02-04
EP1386878B1 true EP1386878B1 (fr) 2004-11-03

Family

ID=27607218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03077162A Expired - Lifetime EP1386878B1 (fr) 2002-07-31 2003-07-10 Grappin hydraulique de briques avec des moyens pour des fonctions additionnelles

Country Status (4)

Country Link
EP (1) EP1386878B1 (fr)
AT (1) ATE281399T1 (fr)
DE (1) DE60300132D1 (fr)
NL (1) NL1021187C2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101979307B (zh) * 2010-10-14 2012-08-08 三一汽车起重机械有限公司 伸缩臂式起重机用单缸插拔销机构
CN102718128A (zh) * 2012-06-19 2012-10-10 田利新 重型机械手用同步机构
CN102815551A (zh) * 2012-08-03 2012-12-12 安徽省池州市盛大专用车装备制造有限公司 用于装卸砖堆的抓夹具
CN103626028B (zh) * 2013-11-05 2016-06-08 江苏多元机械有限公司 一种无动力夹具
CN105366537A (zh) * 2015-11-17 2016-03-02 盐城苏工高科机械有限公司 一种重型吊具的液压夹爪
CN105398952B (zh) * 2015-11-30 2017-09-26 江苏多元机械有限公司 一种成品砌砖夹具
CN106946151B (zh) * 2017-03-16 2018-05-25 昆明理工大学 一种液压夹紧装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2370528A (en) * 1942-07-15 1945-02-27 Robert A Fontaine Material handling device
US2564357A (en) * 1947-03-15 1951-08-14 Albert R Falkner Moving means for building blocks
FR2159342A1 (fr) * 1972-11-06 1973-06-22 Brun Paul Le
GB1556369A (en) * 1976-12-14 1979-11-21 Hy Mac Ltd Grabs
DE29717320U1 (de) * 1997-09-27 1998-01-08 Hermann Steinweg KG Baumaschinenfabrik, 59368 Werne Vorrichtung zum Greifen und Anheben von Stapeln, insbesondere von Steinstapeln

Also Published As

Publication number Publication date
DE60300132D1 (de) 2004-12-09
EP1386878A1 (fr) 2004-02-04
ATE281399T1 (de) 2004-11-15
NL1021187C2 (nl) 2003-06-06

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